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Author SHA1 Message Date
Andrew Tridgell
f7ebb57c5a update maintainer address
use rsync.project@gmail.com
2025-01-15 08:20:12 +11:00
297 changed files with 5247 additions and 20961 deletions

7
.gitattributes vendored
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@@ -1,8 +1 @@
* text=auto eol=lf
# The rsync-web/ subdirectory holds the project website source content
# (mirrors what gets pushed to https://rsync.samba.org). Exclude it from
# `git archive` output so the release source tarball produced by
# packaging/release.py step_7_tarball does not bloat with HTML the
# tarball doesn't need.
/rsync-web/ export-ignore

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@@ -1,82 +0,0 @@
name: Test rsync on AlmaLinux 8
# Older-LTS coverage on the Fedora/RHEL family to help with backporting
# security fixes. AlmaLinux 8 is the RHEL 8 rebuild and is the oldest
# active LTS in this family (RHEL 8 full support runs to 2029).
# GitHub Actions has no native runner for this family, so the job runs
# inside an almalinux:8 container hosted on ubuntu-latest.
on:
push:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/almalinux-8-build.yml'
pull_request:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/almalinux-8-build.yml'
schedule:
- cron: '42 8 * * *'
jobs:
test:
runs-on: ubuntu-latest
container:
image: almalinux:8
name: Test rsync on AlmaLinux 8
steps:
- name: install git
# actions/checkout needs git in the container before the checkout step.
run: dnf -y install git
- uses: actions/checkout@v4
with:
fetch-depth: 0
- name: prep
# PowerTools is needed for libzstd-devel etc; xxhash and lz4 dev
# headers live in EPEL on RHEL 8. The default python3 on RHEL 8
# is 3.6, which is too old for runtests.py (uses capture_output=
# / text= introduced in 3.7), so install python39 and point
# /usr/bin/python3 at it.
run: |
dnf -y install epel-release
dnf config-manager --set-enabled powertools
dnf -y install gcc gcc-c++ make autoconf automake m4 \
python39 python39-pip diffutils \
openssl openssl-devel \
attr libattr-devel acl libacl-devel \
zstd libzstd-devel \
lz4 lz4-devel \
xxhash xxhash-devel
alternatives --set python3 /usr/bin/python3.9
pip3 install commonmark
- name: configure
run: ./configure --with-rrsync
- name: make
run: make
- name: info
run: ./rsync --version
- name: check
# In the container we already run as root, so no sudo. The
# crtimes-not-supported skip matches the other Linux jobs;
# daemon-chroot-acl and proxy-response-line-too-long skip because
# the default (secure) transport opens no listening socket.
run: RSYNC_EXPECT_SKIPPED=crtimes,daemon-access-ip,daemon-chroot-acl,proxy-response-line-too-long make check
- name: check (TCP daemon transport)
# Second run exercising the real loopback-TCP daemon path.
run: ./runtests.py --rsync-bin=`pwd`/rsync --use-tcp -j 8
- name: ssl file list
run: ./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
- name: save artifact
uses: actions/upload-artifact@v4
with:
name: almalinux-8-bin
path: |
rsync
rsync-ssl
rsync.1
rsync-ssl.1
rsyncd.conf.5
rrsync.1
rrsync

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@@ -1,120 +0,0 @@
name: Build static rsync for Android
# Cross-compiles statically-linked rsync binaries with the Android NDK,
# suitable for dropping onto a phone (adb push / Termux) with no shared
# libraries. arm64-v8a covers all modern phones; armeabi-v7a covers older
# 32-bit devices. The binaries are uploaded as workflow artifacts.
#
# These are cross-compiled, so the test suite can't run here; we sanity
# check that each binary is the right architecture, is static, and that
# it executes (`--version`) under qemu-user.
on:
push:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/android-static-build.yml'
pull_request:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/android-static-build.yml'
schedule:
- cron: '42 8 * * *'
workflow_dispatch:
env:
# Minimum supported API level. 24 (Android 7.0) runs on every modern
# phone while keeping broad reach; bump if you need newer Bionic APIs.
ANDROID_API: 24
jobs:
build:
runs-on: ubuntu-latest
name: ${{ matrix.abi }}
strategy:
fail-fast: false
matrix:
include:
- abi: arm64-v8a # modern phones
triple: aarch64-linux-android
qemu: qemu-aarch64-static
- abi: armeabi-v7a # older 32-bit phones
triple: armv7a-linux-androideabi
qemu: qemu-arm-static
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Install build prerequisites
run: sudo apt-get update && sudo apt-get install -y autoconf automake gawk qemu-user-static
- name: Configure and build (${{ matrix.abi }})
shell: bash
run: |
set -euo pipefail
NDK="${ANDROID_NDK_LATEST_HOME:-$ANDROID_NDK_ROOT}"
TC="$NDK/toolchains/llvm/prebuilt/linux-x86_64/bin"
export CC="$TC/${{ matrix.triple }}${ANDROID_API}-clang"
export AR="$TC/llvm-ar" RANLIB="$TC/llvm-ranlib" STRIP="$TC/llvm-strip"
export CFLAGS="-O2" LDFLAGS="-static"
# Bionic doesn't declare lchmod()/lutimes() until API 36, but the
# symbols link, so configure mis-detects them -- force them off so
# rsync uses its fallbacks. The other cache vars restore values
# that configure can't probe when cross-compiling (Android runs a
# normal Linux kernel, so these match the native Linux result).
export ac_cv_func_lchmod=no ac_cv_func_lutimes=no \
rsync_cv_HAVE_SOCKETPAIR=yes \
rsync_cv_MKNOD_CREATES_FIFOS=yes \
rsync_cv_MKNOD_CREATES_SOCKETS=yes
# Self-contained build: drop optional external libraries so the
# static binary needs nothing at runtime. rsync keeps md5/md4
# checksums and its bundled zlib.
./configure --host=${{ matrix.triple }} --build=x86_64-pc-linux-gnu \
--enable-ipv6 \
--disable-zstd --disable-lz4 --disable-xxhash --disable-openssl \
--disable-iconv --disable-iconv-open \
--disable-acl-support --disable-xattr-support \
--disable-md2man --disable-roll-simd \
--with-included-popt --with-included-zlib
# Generate the awk-built headers serially first so the parallel
# build can't race on proto.h <- daemon-parm.h.
make proto.h
make -j"$(nproc)" rsync
"$STRIP" rsync
- name: Verify binary
shell: bash
run: |
set -euo pipefail
file rsync
# Gate: must be a statically-linked executable (no interpreter).
file rsync | grep -q "statically linked"
if file rsync | grep -q "dynamically linked"; then
echo "ERROR: binary is not static" >&2; exit 1
fi
# Best-effort: confirm it actually runs under qemu-user.
${{ matrix.qemu }} ./rsync --version | head -3 || \
echo "WARNING: qemu smoke test did not run cleanly (check on a real device)"
- name: Package
shell: bash
run: |
set -euo pipefail
VER=$(sed -n 's/.*RSYNC_VERSION "\([^"]*\)".*/\1/p' version.h)
out="rsync-${VER}-android-${{ matrix.abi }}"
mkdir -p dist
cp rsync "dist/$out"
( cd dist && sha256sum "$out" > "$out.sha256" )
echo "ARTIFACT_NAME=rsync-android-${{ matrix.abi }}" >>"$GITHUB_ENV"
- name: Upload artifact
uses: actions/upload-artifact@v4
with:
name: ${{ env.ARTIFACT_NAME }}
path: dist/

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@@ -1,71 +0,0 @@
name: Coverage (Ubuntu)
on:
push:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/coverage.yml'
pull_request:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/coverage.yml'
schedule:
- cron: '42 9 * * *'
workflow_dispatch:
jobs:
coverage:
runs-on: ubuntu-latest
name: gcov coverage
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
- name: prep
run: |
sudo apt-get update
sudo apt-get install -y acl libacl1-dev attr libattr1-dev liblz4-dev libzstd-dev libxxhash-dev python3-cmarkgfm openssl gcovr
echo "/usr/local/bin" >>$GITHUB_PATH
- name: configure
run: ./configure --enable-coverage --with-rrsync
- name: make
run: make
- name: info
run: rsync --version
# Two coverage runs: the default pipe transport, then a second pass over a
# real loopback rsyncd (--use-tcp) which also exercises the require_tcp-only
# tests. gcovr's --print-summary line/branch/decision totals go to the step
# log (and the job summary below), so the numbers are visible in CI.
# `make coverage` exits with the suite's status, so a regression fails CI.
- name: coverage (pipe transport)
run: |
set -o pipefail
sudo make coverage 2>&1 | tee cov-pipe.log
- name: coverage (TCP transport)
run: |
set -o pipefail
sudo make coverage-tcp 2>&1 | tee cov-tcp.log
- name: coverage summary
if: always()
run: |
{
echo "## gcov coverage"
echo "### Pipe transport (\`make coverage\`)"
echo '```'
grep -E '^(lines|functions|branches|decisions):' cov-pipe.log || echo '(no summary -- see step log)'
echo '```'
echo "### TCP transport (\`make coverage-tcp\`)"
echo '```'
grep -E '^(lines|functions|branches|decisions):' cov-tcp.log || echo '(no summary -- see step log)'
echo '```'
} >> "$GITHUB_STEP_SUMMARY"
- name: upload HTML reports
if: always()
uses: actions/upload-artifact@v4
with:
name: coverage-html
path: |
coverage
coverage-tcp

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@@ -39,16 +39,7 @@ jobs:
- name: info
run: bash -c '/usr/local/bin/rsync --version'
- name: check
# chown-fake / devices-fake / xattrs / xattrs-hlink now RUN on Cygwin
# (rsyncfns.py drives xattrs via getfattr/setfattr from the `attr`
# package installed above), verified on a real Cygwin host. The real
# chown/devices tests still skip (need root/mknod), as do the
# RESOLVE_BENEATH symlink-race tests.
run: bash -c 'RSYNC_EXPECT_SKIPPED=acls-default,acls-depth,acls,bare-do-open-symlink-race,chdir-symlink-race,chown,daemon-access-ip,daemon-chroot-acl,devices,dir-sgid,open-noatime,protected-regular,proxy-response-line-too-long,sender-flist-symlink-leak,simd-checksum,symlink-dirlink-basis make check'
- name: check (TCP daemon transport)
# Second run with daemon tests over a real loopback rsyncd; the default
# 'make check' above uses the secure stdio-pipe transport.
run: bash -c './runtests.py --rsync-bin=`pwd`/rsync.exe --use-tcp -j 8'
run: bash -c 'RSYNC_EXPECT_SKIPPED=acls-default,acls,chown,devices,dir-sgid,protected-regular make check'
- name: ssl file list
run: bash -c 'PATH="/usr/local/bin:$PATH" rsync-ssl --no-motd download.samba.org::rsyncftp/ || true'
- name: save artifact

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@@ -34,8 +34,6 @@ jobs:
./configure --with-rrsync -disable-zstd --disable-md2man --disable-xxhash --disable-lz4
make
./rsync --version
make check
./runtests.py --rsync-bin=`pwd`/rsync --use-tcp -j 8
./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
- name: save artifact
uses: actions/upload-artifact@v4

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@@ -25,15 +25,10 @@ jobs:
- name: prep
run: |
brew install automake openssl xxhash zstd lz4
pip3 install --user --break-system-packages commonmark
echo "$(brew --prefix)/bin" >>$GITHUB_PATH
sudo pip3 install commonmark
echo "/usr/local/bin" >>$GITHUB_PATH
- name: configure
run: |
BREW_PREFIX=$(brew --prefix)
OPENSSL_PREFIX=$(brew --prefix openssl)
CPPFLAGS="-I${BREW_PREFIX}/include -I${OPENSSL_PREFIX}/include" \
LDFLAGS="-L${BREW_PREFIX}/lib -L${OPENSSL_PREFIX}/lib" \
./configure --with-rrsync
run: CPPFLAGS=-I/usr/local/opt/openssl/include/ LDFLAGS=-L/usr/local/opt/openssl/lib/ ./configure --with-rrsync
- name: make
run: make
- name: install
@@ -41,18 +36,11 @@ jobs:
- name: info
run: rsync --version
- name: check
# chown-fake / devices-fake / xattrs / xattrs-hlink now RUN on macOS
# (rsyncfns.py drives xattrs via the `xattr` command), verified on a
# real macOS host, so they're no longer in the skip set.
run: sudo RSYNC_EXPECT_SKIPPED=acls-default,acls-depth,chmod-temp-dir,daemon-access-ip,daemon-chroot-acl,dir-sgid,open-noatime,preallocate,protected-regular,proxy-response-line-too-long,simd-checksum,sparse make check
- name: check (TCP daemon transport)
# Second run with daemon tests over a real loopback rsyncd; the default
# 'make check' above uses the secure stdio-pipe transport.
run: sudo ./runtests.py --rsync-bin=`pwd`/rsync --use-tcp -j 8
run: sudo RSYNC_EXPECT_SKIPPED=acls-default,chmod-temp-dir,chown-fake,devices-fake,dir-sgid,protected-regular,xattrs-hlink,xattrs make check
- name: ssl file list
run: rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
- name: save artifact
uses: actions/upload-artifact@v4
uses: actions/upload-artifact@v3
with:
name: macos-bin
path: |

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@@ -1,52 +0,0 @@
name: Test rsync on NetBSD
on:
push:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/netbsd-build.yml'
pull_request:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/netbsd-build.yml'
schedule:
- cron: '42 8 * * *'
jobs:
test:
runs-on: ubuntu-latest
name: Test rsync on NetBSD
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Test in NetBSD VM
id: test
uses: vmactions/netbsd-vm@v1
with:
usesh: true
prepare: |
PATH=/usr/sbin:$PATH pkg_add autoconf automake python312
ln -sf /usr/pkg/bin/python3.12 /usr/pkg/bin/python3
run: |
uname -a
./configure --with-rrsync --disable-zstd --disable-md2man --disable-xxhash --disable-lz4
make
./rsync --version
make check
./runtests.py --rsync-bin=`pwd`/rsync --use-tcp -j 8
./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
- name: save artifact
uses: actions/upload-artifact@v4
with:
name: netbsd-bin
path: |
rsync
rsync-ssl
rsync.1
rsync-ssl.1
rsyncd.conf.5
rrsync.1
rrsync

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@@ -1,61 +0,0 @@
name: Test rsync on OpenBSD
on:
push:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/openbsd-build.yml'
pull_request:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/openbsd-build.yml'
schedule:
- cron: '42 8 * * *'
jobs:
test:
runs-on: ubuntu-latest
name: Test rsync on OpenBSD
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Test in OpenBSD VM
id: test
uses: vmactions/openbsd-vm@v1
with:
usesh: true
prepare: |
pkg_add -I bash autoconf%2.71 automake%1.16
run: |
uname -a
export AUTOCONF_VERSION=2.71
export AUTOMAKE_VERSION=1.16
./configure --with-rrsync --disable-zstd --disable-md2man --disable-xxhash --disable-lz4
make
./rsync --version
make check
# The --use-tcp daemon tests run at -j2 here (vs -j8 elsewhere): this
# job runs inside a nested VM, and at -j8 the many concurrent loopback
# daemons occasionally lose a connection-handshake timing race under
# that resource pressure, hanging one test to the 300s timeout. It is
# an environment artifact, not an rsync bug (the handshake is
# deadlock-free and unreproducible elsewhere, even pinned to 1 CPU at
# -j8); -j2 keeps the VM from over-subscribing. The pipe `make check`
# above stays at the default parallelism.
./runtests.py --rsync-bin=`pwd`/rsync --use-tcp -j 2
./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
- name: save artifact
uses: actions/upload-artifact@v4
with:
name: openbsd-bin
path: |
rsync
rsync-ssl
rsync.1
rsync-ssl.1
rsyncd.conf.5
rrsync.1
rrsync

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@@ -34,8 +34,6 @@ jobs:
./configure --with-rrsync -disable-zstd --disable-md2man --disable-xxhash --disable-lz4
make
./rsync --version
make check
./runtests.py --rsync-bin=`pwd`/rsync --use-tcp -j 8
./rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
- name: save artifact
uses: actions/upload-artifact@v4

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@@ -1,64 +0,0 @@
name: Test rsync on Ubuntu 22.04
# Older-LTS coverage to help with backporting security fixes. ubuntu-22.04
# is currently the oldest GitHub Actions runner image (20.04 was retired
# in April 2025).
on:
push:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/ubuntu-22.04-build.yml'
pull_request:
branches: [ master ]
paths-ignore:
- '.github/workflows/*.yml'
- '!.github/workflows/ubuntu-22.04-build.yml'
schedule:
- cron: '42 8 * * *'
jobs:
test:
runs-on: ubuntu-22.04
name: Test rsync on Ubuntu 22.04
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
- name: prep
run: |
sudo apt-get install acl libacl1-dev attr libattr1-dev liblz4-dev libzstd-dev libxxhash-dev python3-cmarkgfm openssl
echo "/usr/local/bin" >>$GITHUB_PATH
- name: configure
run: ./configure --with-rrsync
- name: make
run: make
- name: install
run: sudo make install
- name: info
run: rsync --version
- name: check
run: sudo RSYNC_EXPECT_SKIPPED=crtimes,daemon-access-ip,daemon-chroot-acl,proxy-response-line-too-long make check
- name: check30
run: sudo RSYNC_EXPECT_SKIPPED=crtimes,daemon-access-ip,daemon-chroot-acl,proxy-response-line-too-long make check30
- name: check29
run: sudo RSYNC_EXPECT_SKIPPED=crtimes,daemon-access-ip,daemon-chroot-acl,proxy-response-line-too-long make check29
- name: check (TCP daemon transport)
# Second run with daemon tests over a real loopback rsyncd; the default
# 'make check' above uses the secure stdio-pipe transport.
run: sudo ./runtests.py --rsync-bin=`pwd`/rsync --use-tcp -j 8
- name: ssl file list
run: rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
- name: save artifact
uses: actions/upload-artifact@v4
with:
name: ubuntu-22.04-bin
path: |
rsync
rsync-ssl
rsync.1
rsync-ssl.1
rsyncd.conf.5
rrsync.1
rrsync

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@@ -16,7 +16,7 @@ on:
jobs:
test:
runs-on: ubuntu-latest
runs-on: ubuntu-20.04
name: Test rsync on Ubuntu
steps:
- uses: actions/checkout@v4
@@ -35,17 +35,11 @@ jobs:
- name: info
run: rsync --version
- name: check
run: sudo RSYNC_EXPECT_SKIPPED=crtimes,daemon-access-ip,daemon-chroot-acl,proxy-response-line-too-long make check
run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check
- name: check30
run: sudo RSYNC_EXPECT_SKIPPED=crtimes,daemon-access-ip,daemon-chroot-acl,proxy-response-line-too-long make check30
run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check30
- name: check29
run: sudo RSYNC_EXPECT_SKIPPED=crtimes,daemon-access-ip,daemon-chroot-acl,proxy-response-line-too-long make check29
- name: check (TCP daemon transport)
# Second run with daemon tests over a real loopback rsyncd. The default
# 'make check' above uses the secure stdio-pipe transport (no listening
# sockets); this run exercises the real TCP accept/auth path. Skip-set
# is env-dependent here (chroot-acl), so leave RSYNC_EXPECT_SKIPPED unset.
run: sudo ./runtests.py --rsync-bin=`pwd`/rsync --use-tcp -j 8
run: sudo RSYNC_EXPECT_SKIPPED=crtimes make check29
- name: ssl file list
run: rsync-ssl --no-motd download.samba.org::rsyncftp/ || true
- name: save artifact

1
.gitignore vendored
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@@ -58,4 +58,3 @@ aclocal.m4
/auto-build-save
.deps
/*.exe
*.dSYM/

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@@ -7,22 +7,6 @@ option to use if you want to just skip that feature. What follows are various
support libraries that you may want to install to build rsync with the maximum
features (the impatient can skip down to the package summary):
## Ubuntu users: skip the build, use the PPA
If you are on a currently supported Ubuntu series (jammy 22.04 LTS, noble
24.04 LTS, questing 25.10, resolute 26.04 LTS) and just want the latest
upstream rsync, the rsync project maintains a Launchpad PPA that tracks
stable releases:
> sudo add-apt-repository ppa:rsyncproject/rsync
> sudo apt update && sudo apt install rsync
See [the PPA page][ppa] for current build status across architectures.
[ppa]: https://launchpad.net/~rsyncproject/+archive/ubuntu/rsync
The rest of this document covers building from source.
## The basic setup
You need to have a C compiler installed and optionally a C++ compiler in order

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@@ -49,7 +49,7 @@ OBJS2=options.o io.o compat.o hlink.o token.o uidlist.o socket.o hashtable.o \
usage.o fileio.o batch.o clientname.o chmod.o acls.o xattrs.o
OBJS3=progress.o pipe.o @MD5_ASM@ @ROLL_SIMD@ @ROLL_ASM@
DAEMON_OBJ = params.o loadparm.o clientserver.o access.o connection.o authenticate.o
popt_OBJS= popt/popt.o popt/poptconfig.o \
popt_OBJS=popt/findme.o popt/popt.o popt/poptconfig.o \
popt/popthelp.o popt/poptparse.o popt/poptint.o
OBJS=$(OBJS1) $(OBJS2) $(OBJS3) $(DAEMON_OBJ) $(LIBOBJ) @BUILD_ZLIB@ @BUILD_POPT@
@@ -57,14 +57,12 @@ TLS_OBJ = tls.o syscall.o util2.o t_stub.o lib/compat.o lib/snprintf.o lib/perms
# Programs we must have to run the test cases
CHECK_PROGS = rsync$(EXEEXT) tls$(EXEEXT) getgroups$(EXEEXT) getfsdev$(EXEEXT) \
testrun$(EXEEXT) trimslash$(EXEEXT) t_unsafe$(EXEEXT) t_chmod_secure$(EXEEXT) \
t_secure_relpath$(EXEEXT) wildtest$(EXEEXT) simdtest$(EXEEXT)
testrun$(EXEEXT) trimslash$(EXEEXT) t_unsafe$(EXEEXT) wildtest$(EXEEXT)
CHECK_SYMLINKS = testsuite/chown-fake_test.py testsuite/devices-fake_test.py \
testsuite/xattrs-hlink_test.py testsuite/exclude-lsh_test.py
CHECK_SYMLINKS = testsuite/chown-fake.test testsuite/devices-fake.test testsuite/xattrs-hlink.test
# Objects for CHECK_PROGS to clean
CHECK_OBJS=tls.o testrun.o getgroups.o getfsdev.o t_stub.o t_unsafe.o t_chmod_secure.o t_secure_relpath.o trimslash.o wildtest.o
CHECK_OBJS=tls.o testrun.o getgroups.o getfsdev.o t_stub.o t_unsafe.o trimslash.o wildtest.o
# note that the -I. is needed to handle config.h when using VPATH
.c.o:
@@ -180,14 +178,6 @@ T_UNSAFE_OBJ = t_unsafe.o syscall.o util1.o util2.o t_stub.o lib/compat.o lib/sn
t_unsafe$(EXEEXT): $(T_UNSAFE_OBJ)
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(T_UNSAFE_OBJ) $(LIBS)
T_CHMOD_SECURE_OBJ = t_chmod_secure.o syscall.o util1.o util2.o t_stub.o lib/compat.o lib/snprintf.o lib/wildmatch.o lib/permstring.o
t_chmod_secure$(EXEEXT): $(T_CHMOD_SECURE_OBJ)
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(T_CHMOD_SECURE_OBJ) $(LIBS)
T_SECURE_RELPATH_OBJ = t_secure_relpath.o syscall.o util1.o util2.o t_stub.o lib/compat.o lib/snprintf.o lib/wildmatch.o lib/permstring.o
t_secure_relpath$(EXEEXT): $(T_SECURE_RELPATH_OBJ)
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(T_SECURE_RELPATH_OBJ) $(LIBS)
.PHONY: conf
conf: configure.sh config.h.in
@@ -280,8 +270,6 @@ clean: cleantests
rm -f *~ $(OBJS) $(CHECK_PROGS) $(CHECK_OBJS) $(CHECK_SYMLINKS) @MAKE_RRSYNC@ \
git-version.h rounding rounding.h *.old rsync*.1 rsync*.5 @MAKE_RRSYNC_1@ \
*.html daemon-parm.h help-*.h default-*.h proto.h proto.h-tstamp
rm -f *.gcno *.gcda lib/*.gcno lib/*.gcda zlib/*.gcno zlib/*.gcda popt/*.gcno popt/*.gcda
rm -rf coverage coverage-tcp coverage-all coverage-fallback
.PHONY: cleantests
cleantests:
@@ -322,133 +310,30 @@ test: check
# catch Bash-isms earlier even if we're running on GNU. Of course, we
# might lose in the future where POSIX diverges from old sh.
# `make check` runs tests in parallel by default. Override with
# `make check CHECK_J=1` (serial) or any other value.
CHECK_J = 8
# Parallelism for `make coverage`. Defaults to the same as CHECK_J: the
# coverage build sets -fprofile-update=atomic (atomic in-memory counters) and
# gcc's libgcov serializes the per-source .gcda read-modify-write merge with a
# file lock, so concurrent rsync processes (incl. the forked sender/generator/
# receiver) accumulate exactly -- verified by a count-linearity check (a hot
# line accumulates identically at -j1 and -P16). Override with
# `make coverage COVERAGE_J=1` if your libgcov does not lock .gcda merges.
COVERAGE_J = $(CHECK_J)
# Output directory and extra runtests.py flags for `make coverage`. The
# `coverage-tcp` target reuses the coverage recipe with --use-tcp (real
# loopback rsyncd, which exercises the TCP accept/auth path and the
# require_tcp-only tests) and a separate output directory.
COVERAGE_DIR = coverage
COVERAGE_RUNFLAGS =
# Bundled third-party code that rsync ships but does not own; excluded from the
# coverage report so the percentages reflect rsync's own source. zlib/ and popt/
# are wholly vendored; the named lib/ files are PostgreSQL (getaddrinfo) and ISC
# (inet_ntop/inet_pton) / standalone (getpass) imports. The other lib/*.c
# (md5, mdfour, wildmatch, permstring, pool_alloc, snprintf, sysacls, sysxattrs,
# compat) are rsync's own and stay in the report.
COVERAGE_EXCLUDE = -e '(^|/)zlib/' -e '(^|/)popt/' \
-e '(^|/)lib/(getaddrinfo|getpass|inet_ntop|inet_pton)\.'
.PHONY: check
check: all $(CHECK_PROGS) $(CHECK_SYMLINKS)
$(srcdir)/runtests.py --rsync-bin=`pwd`/rsync$(EXEEXT) -j $(CHECK_J)
rsync_bin=`pwd`/rsync$(EXEEXT) $(srcdir)/runtests.sh
.PHONY: check29
check29: all $(CHECK_PROGS) $(CHECK_SYMLINKS)
$(srcdir)/runtests.py --rsync-bin=`pwd`/rsync$(EXEEXT) -j $(CHECK_J) --protocol=29
rsync_bin=`pwd`/rsync$(EXEEXT) $(srcdir)/runtests.sh --protocol=29
.PHONY: check30
check30: all $(CHECK_PROGS) $(CHECK_SYMLINKS)
$(srcdir)/runtests.py --rsync-bin=`pwd`/rsync$(EXEEXT) -j $(CHECK_J) --protocol=30
# Whole-suite gcov coverage report (HTML, with branch + decision coverage).
# Requires a build configured with --enable-coverage and the `gcovr` tool
# (pip install gcovr). Runs the suite in parallel (COVERAGE_J, default CHECK_J):
# this is safe because the coverage build uses -fprofile-update=atomic and
# libgcov locks the per-source .gcda during its merge, so concurrent rsync
# processes accumulate exactly (see COVERAGE_J above). Use COVERAGE_J=1 if your
# toolchain's libgcov does not lock .gcda merges.
.PHONY: coverage
coverage: all $(CHECK_PROGS) $(CHECK_SYMLINKS)
@case '$(CFLAGS)' in *--coverage*) ;; \
*) echo "*** not a coverage build; reconfigure with --enable-coverage"; exit 1 ;; esac
@command -v gcovr >/dev/null 2>&1 || { echo "*** gcovr not found (pip install gcovr)"; exit 1; }
find . -name '*.gcda' -delete
@rc=0; $(srcdir)/runtests.py --rsync-bin=`pwd`/rsync$(EXEEXT) -j $(COVERAGE_J) $(COVERAGE_RUNFLAGS) || rc=$$?; \
rm -rf $(COVERAGE_DIR) && mkdir -p $(COVERAGE_DIR); \
gcovr --root $(srcdir) $(COVERAGE_EXCLUDE) --decisions --print-summary \
--html-details -o $(COVERAGE_DIR)/index.html . || exit $$?; \
echo "Coverage report written to $(COVERAGE_DIR)/index.html"; \
if test $$rc != 0; then \
echo "*** test suite FAILED (status $$rc) -- coverage report still written above"; \
fi; \
exit $$rc
# Same as `make coverage` but with the daemon tests run over a real loopback
# rsyncd (--use-tcp), into a separate report directory.
.PHONY: coverage-tcp
coverage-tcp:
$(MAKE) coverage COVERAGE_RUNFLAGS=--use-tcp COVERAGE_DIR=coverage-tcp
# Comprehensive single report: run the suite under several configurations,
# accumulating into the shared .gcda counters (NOT cleared between runs), then
# emit one merged, rsync-scoped report. Covers the default (pipe) transport, the
# protocol-29/30 compat branches, and the real-TCP daemon path (which also runs
# the require_tcp-only tests). Run under sudo to additionally cover root-only
# paths (devices, chown, use-chroot, protected-regular). Local target -- CI uses
# the plain `coverage`/`coverage-tcp` targets.
.PHONY: coverage-all
coverage-all: all $(CHECK_PROGS) $(CHECK_SYMLINKS)
@case '$(CFLAGS)' in *--coverage*) ;; \
*) echo "*** not a coverage build; reconfigure with --enable-coverage"; exit 1 ;; esac
@command -v gcovr >/dev/null 2>&1 || { echo "*** gcovr not found (pip install gcovr)"; exit 1; }
find . -name '*.gcda' -delete
@rc=0; \
for cfg in '' '--protocol=30' '--protocol=29' '--use-tcp'; do \
echo "===== coverage-all: runtests.py $$cfg ====="; \
$(srcdir)/runtests.py --rsync-bin=`pwd`/rsync$(EXEEXT) -j $(COVERAGE_J) $$cfg || rc=$$?; \
done; \
rm -rf coverage-all && mkdir -p coverage-all; \
gcovr --root $(srcdir) $(COVERAGE_EXCLUDE) --decisions --print-summary \
--html-details -o coverage-all/index.html . || exit $$?; \
echo "Merged coverage report written to coverage-all/index.html"; \
if test $$rc != 0; then \
echo "*** some suite runs FAILED (status $$rc) -- report still written above"; \
fi; \
exit $$rc
# Coverage for the portable (non-openat2) resolver tier. Requires a SEPARATE
# build configured with --enable-coverage --disable-openat2: its .gcno differ
# from the openat2 build, so this report cannot be merged with the others.
.PHONY: coverage-fallback
coverage-fallback:
$(MAKE) coverage COVERAGE_DIR=coverage-fallback
rsync_bin=`pwd`/rsync$(EXEEXT) $(srcdir)/runtests.sh --protocol=30
wildtest.o: wildtest.c t_stub.o lib/wildmatch.c rsync.h config.h
wildtest$(EXEEXT): wildtest.o lib/compat.o lib/snprintf.o @BUILD_POPT@
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ wildtest.o lib/compat.o lib/snprintf.o @BUILD_POPT@ $(LIBS)
simdtest$(EXEEXT): simd-checksum-x86_64.cpp $(HEADERS)
@if test x"@ROLL_SIMD@" != x; then \
$(CXX) -I. $(CXXFLAGS) $(CPPFLAGS) $(LDFLAGS) -DTEST_SIMD_CHECKSUM1 \
-o $@ $(srcdir)/simd-checksum-x86_64.cpp @ROLL_ASM@ $(LIBS); \
else \
touch $@; \
fi
testsuite/chown-fake.test:
ln -s chown.test $(srcdir)/testsuite/chown-fake.test
testsuite/chown-fake_test.py:
ln -s chown_test.py $(srcdir)/testsuite/chown-fake_test.py
testsuite/devices-fake.test:
ln -s devices.test $(srcdir)/testsuite/devices-fake.test
testsuite/devices-fake_test.py:
ln -s devices_test.py $(srcdir)/testsuite/devices-fake_test.py
testsuite/xattrs-hlink_test.py:
ln -s xattrs_test.py $(srcdir)/testsuite/xattrs-hlink_test.py
testsuite/exclude-lsh_test.py:
ln -s exclude_test.py $(srcdir)/testsuite/exclude-lsh_test.py
testsuite/xattrs-hlink.test:
ln -s xattrs.test $(srcdir)/testsuite/xattrs-hlink.test
# This does *not* depend on building or installing: you can use it to
# check a version installed from a binary or some other source tree,
@@ -456,7 +341,7 @@ testsuite/exclude-lsh_test.py:
.PHONY: installcheck
installcheck: $(CHECK_PROGS) $(CHECK_SYMLINKS)
$(srcdir)/runtests.py --rsync-bin="$(bindir)/rsync$(EXEEXT)" --srcdir="$(srcdir)" --tooldir=`pwd` -j $(CHECK_J)
POSIXLY_CORRECT=1 TOOLDIR=`pwd` rsync_bin="$(bindir)/rsync$(EXEEXT)" srcdir="$(srcdir)" $(srcdir)/runtests.sh
# TODO: Add 'dist' target; need to know which files will be included

358
NEWS.md
View File

@@ -1,355 +1,3 @@
# NEWS for rsync 3.4.3 (20 May 2026)
## Changes in this version:
### SECURITY FIXES:
Six CVEs are fixed in this release. All six are assigned by
VulnCheck as CNA. Affected versions are 3.4.2 and earlier in every
case. Three of the six (CVE-2026-29518, CVE-2026-43617,
CVE-2026-43619) require non-default daemon configuration to reach:
the first and third need `use chroot = no` for a module, the second
needs `daemon chroot = ...` set in rsyncd.conf. Two (CVE-2026-43618,
CVE-2026-43620) are reachable from a normal pull or a normal
authenticated daemon connection. The sixth (CVE-2026-45232) is
reachable only when `RSYNC_PROXY` is set and the proxy (or a MITM)
returns a pathological response. Many thanks to the external
researchers who reported these issues.
- CVE-2026-29518 (CVSS v4.0 7.3, HIGH): TOCTOU symlink race condition
allowing local privilege escalation in daemon mode without chroot.
An rsync daemon configured with "use chroot = no" was exposed to a
time-of-check / time-of-use race on parent path components: a local
attacker with write access to a module could replace a parent
directory component with a symlink between the receiver's check and
its open(), redirecting reads (basis-file disclosure) and writes
(file overwrite) outside the module. Default "use chroot = yes" is
not exposed. `secure_relative_open()` (added in 3.4.0 for
CVE-2024-12086) was previously unused in the daemon-no-chroot
case; the fix enables it there and reroutes the sender's
read-path opens through it. Reported by Nullx3D (Batuhan Sancak),
Damien Neil and Michael Stapelberg.
- CVE-2026-43617 (CVSS v3.1 4.8, MEDIUM): Hostname/ACL bypass on an
rsync daemon configured with `daemon chroot = /X` in rsyncd.conf
when the chroot tree lacks DNS resolution support. The
reverse-DNS lookup of the connecting client was performed *after*
the daemon chroot had been entered; if /X did not contain the
libc resolver fixtures (`/etc/resolv.conf`, `/etc/nsswitch.conf`,
`/etc/hosts`, NSS service modules) the lookup failed and the
connecting hostname was set to "UNKNOWN", causing hostname-based
deny rules to silently fail open. IP-based ACLs are unaffected.
The per-module `use chroot` setting is unrelated to this issue.
The fix performs the lookup before entering the daemon chroot.
Reported by MegaManSec.
- CVE-2026-43618 (CVSS v3.1 8.1, HIGH): Integer overflow in the
compressed-token decoder enabling remote memory disclosure to an
authenticated daemon peer. The receiver accumulated a 32-bit
signed counter without overflow checking; a malicious sender could
trigger an overflow that, with careful manipulation, leaked process
memory contents to the attacker -- environment variables,
passwords, heap and library pointers -- significantly weakening
ASLR. The fix bounds the counter and adds wire-input validation in
several adjacent places (defence-in-depth). Workaround for older
releases: `refuse options = compress` in rsyncd.conf. Reported by
Omar Elsayed.
- CVE-2026-43619 (CVSS v3.1 6.3, MEDIUM): Symlink races on path-based
system calls in "use chroot = no" daemon mode (generalisation of
CVE-2026-29518). Earlier fixes for symlink races on the receiver's
open() call missed the same race class on every other path-based
system call: chmod, lchown, utimes, rename, unlink, mkdir, symlink,
mknod, link, rmdir and lstat. The fix routes each affected
path-based syscall through a parent dirfd opened under
RESOLVE_BENEATH-equivalent kernel-enforced confinement (openat2 on
Linux 5.6+, O_RESOLVE_BENEATH on FreeBSD 13+ and macOS 15+,
per-component O_NOFOLLOW walk elsewhere). Default "use chroot =
yes" is not exposed. Reported by Andrew Tridgell as a follow-on
audit of CVE-2026-29518.
- CVE-2026-43620 (CVSS v3.1 6.5, MEDIUM): Out-of-bounds read in the
receiver's recv_files() enabling remote denial-of-service of any
client pulling from a malicious server (incomplete fix of commit
797e17f). The earlier parent_ndx<0 guard added to send_files() was
not applied to the visually-identical block in recv_files(). A
malicious rsync server can drive any connecting client into a
deterministic SIGSEGV by setting CF_INC_RECURSE in the
compatibility flags and sending a crafted file list and transfer
record. inc_recurse is the protocol-30+ default, so no special
options are required on the victim. Workaround for older
releases: `--no-inc-recursive` on the client. Reported by Pratham
Gupta.
- CVE-2026-45232 (CVSS v3.1 3.1, LOW): Off-by-one out-of-bounds stack
write in the rsync client's HTTP CONNECT proxy handler
(`establish_proxy_connection()` in `socket.c`). After issuing the
CONNECT request, rsync read the proxy's first response line one
byte at a time into a 1024-byte stack buffer with the bound
`cp < &buffer[sizeof buffer - 1]`. If the proxy (or a MITM in
front of it) returned 1023+ bytes on that first line without a
newline terminator, `cp` exited the loop pointing at a buffer slot
the loop never wrote, leaving `*cp` holding stale stack data from
the earlier `snprintf()` of the outgoing CONNECT request. The
post-loop logic then wrote a single `\0` one byte past the end of
the buffer on the stack. Reach is client-side only, and only when
`RSYNC_PROXY` is set so rsync tunnels an `rsync://` connection
through an HTTP CONNECT proxy. The written byte is always `\0`
and the offset is fixed by the buffer size, not attacker-chosen,
so this is not an arbitrary-write primitive: practical impact is
corruption of one adjacent stack byte and possible later
misbehaviour or crash. The fix detects the "buffer filled without
finding `\n`" case explicitly by position and refuses the response
with "proxy response line too long". Reported by Aisle Research
via Michal Ruprich (rsync-3.4.1-2.el10 QE).
In addition to the six CVE fixes, this release adds defence-in-depth
hardening on several adjacent paths: bounded wire-supplied counts and
lengths in flist/io/acls/xattrs, a guard against length underflow in
cumulative `snprintf()` callers, a parent block-index bounds check on
the receiver, a NULL check in `read_delay_line()`, a lower ceiling on
`MAX_WIRE_DEL_STAT` to avoid signed-int overflow in the
`read_del_stats()` accumulator, rejection of hyphen-prefixed
remote-shell hostnames (defence-in-depth against argv-injection in
tooling that forwards untrusted input into the hostspec position;
reported by Aisle Research via Michal Ruprich), and a NULL-check on
`localtime_r()` in `timestring()` to keep a malicious server from
crashing the client by advertising a file with an out-of-range
modtime.
### BUG FIXES:
- Fixed a regression introduced by the 3.4.0 secure_relative_open()
CVE fix where legitimate directory symlinks on the receiver side
(e.g. when using `-K` / `--copy-dirlinks`) caused "failed
verification -- update discarded" errors on delta transfers. The
old code rejected every symlink in the path with a per-component
`O_NOFOLLOW` walk; the receiver now uses kernel-enforced "stay
below dirfd" path resolution where available. Fixes #715.
### PORTABILITY / BUILD:
- secure_relative_open() now uses `openat2(RESOLVE_BENEATH |
RESOLVE_NO_MAGICLINKS)` on Linux 5.6+, and `openat()` with
`O_RESOLVE_BENEATH` on FreeBSD 13+ and macOS 15+ (Sequoia) /
iOS 18+. The kernel rejects ".." escapes, absolute symlinks, and
symlinks whose target lies outside the starting directory, while
still following symlinks that resolve within it -- the same
trade-off that fixes the issue #715 regression without weakening
the original CVE protection. Other platforms (Solaris, OpenBSD,
NetBSD, Cygwin) retain the previous per-component `O_NOFOLLOW`
walk; on those platforms the issue #715 regression remains
visible.
- testsuite/xattrs: ignore `SUNWattr_*` in the Solaris `xls`
helper.
### DEVELOPER RELATED:
- Added testsuite/symlink-dirlink-basis.test (taken from PR #864
by Samuel Henrique) covering the issue #715 regression and
several edge cases (`--backup`, `--inplace`, `--partial-dir`
with protocol < 29, top-level files). The test skips on
platforms without a RESOLVE_BENEATH equivalent.
- Added regression tests for the new security fixes:
`chmod-symlink-race.test`, `chdir-symlink-race.test`,
`bare-do-open-symlink-race.test`, `alt-dest-symlink-race.test`,
`copy-dest-source-symlink.test`, `sender-flist-symlink-leak.test`,
`secure-relpath-validation.test`, `daemon-chroot-acl.test` and
`daemon-refuse-compress.test`. The symlink-race tests skip on
Cygwin, Solaris, OpenBSD and NetBSD (no RESOLVE_BENEATH
equivalent on those platforms).
- runtests.py now errors early with a clear message when any of
the test helper programs (`tls`, `trimslash`, `t_unsafe`,
`t_chmod_secure`, `t_secure_relpath`, `wildtest`, `getgroups`,
`getfsdev`) are missing, instead of letting many tests fail with
confusing "not found" errors.
- Added OpenBSD and NetBSD CI jobs that run `make check` on those
platforms.
- Added Ubuntu 22.04 and AlmaLinux 8 CI workflows so future
backports to the two mainstream LTS families build and test on
the same CI surface as trunk.
- testsuite/protected-regular.test now runs unprivileged via
`unshare` with user-namespace UID mapping, falling back to skip
if `unshare`/`uidmap` is not available; previously it required
real root.
- Added `symlink-dirlink-basis` to the Cygwin CI's expected-skipped
list.
- Removed the old release system (replaced by the new release
script in 3.4.2).
------------------------------------------------------------------------------
# NEWS for rsync 3.4.2 (28 Apr 2026)
## Changes in this version:
### SECURITY RELATED:
Several security-relevant defects were reported and fixed since 3.4.1.
None were assigned a CVE — rsync's fork-per-connection design scopes
the impact of each of these to the attacker's own connection, which is
equivalent to the client closing the socket itself — but they are
fixed here as a matter of hygiene and to reduce the chances of a
future exploitable combination. Many thanks to the external
researchers who reported these issues.
- Fixed a signed integer overflow in the PROXY protocol v2 header
parser: a negative `len` field could bypass the size check and cause
a stack buffer overflow in `read_buf()`. Reported by John Walker of
ZeroPath.
- Fixed an invalid access to the files array. Reported by Calum
Hutton of Rapid7.
- Reject negative token values in the compressed-stream token
decoder; a negative value could cause callers to misinterpret a
missing data pointer as literal data. Reported by Will Sergeant.
- Fixed the element count passed to the xattr `qsort()` (see
https://www.openwall.com/lists/oss-security/2026/04/16/2).
- Fixed a buffer underflow in `clean_fname()`, and added a regression
test.
- Fixed an uninitialized `mul_one` in the AVX2 get_checksum1 path
(undefined behaviour), and added a SIMD-checksum self-test that
cross-checks SSE2, SSSE3 and AVX2 against the C reference on both
aligned and unaligned buffers.
- Fixed an uninitialized `buf1` on the first call to
`get_checksum2()` in the MD4 path (fixes #673).
- Zero all new memory from internal allocations: `my_alloc()` now uses
`calloc`, and `expand_item_list()` zeros the expanded portion after
`realloc`. This gives more predictable behaviour if stale or
uninitialised memory is ever accidentally read.
### BUG FIXES:
- Call `tzset()` before chroot so that log timestamps continue to
reflect the configured local timezone after the daemon chroots
(glibc needs `/etc/localtime`, which is unreachable post-chroot).
- Use the correct time when writing to the log file.
- Do not clear `DISPLAY` unconditionally.
- Fixed a Y2038 bug in `syscall.c` by replacing the `Int32x32To64`
macro (which truncates its arguments to 32 bits) with a plain
64-bit multiplication.
- Fixed ACL ID mapping for non-root users (closes #618).
- Fixed handling of objects with many xattrs on FreeBSD.
- Fixed `--open-noatime` not taking effect when opening regular
files: `O_NOATIME` is now also passed to `do_open_nofollow()`, which
has been used for regular files since the CVE fix "fixed symlink
race condition in sender".
- Ignore "directory has vanished" errors.
- Fixed the removal of multiple leading slashes.
- Added the missing `--dirs` long option.
- Fixed a segfault if `poptGetContext()` returns NULL (e.g. under
OOM) by not passing NULL to `poptReadDefaultConfig()`. Reported by
Ronnie Sahlberg; found with `malloc-fail-tester`.
- Fixed a build error on ia64 NonStop (which treats missing
prototypes as an error, not a warning).
- Fixed a flaky hardlinks test (fixes #735).
### ENHANCEMENTS:
- Added multi-threaded `zstd` compression, gated by a new
`--compress-threads=N` option, with validation and man-page
coverage.
- Documented the `temp dir` parameter in the rsyncd.conf man page
(fixes #820).
- Improved rendering of interior dashes in long-option names in
`md-convert` (perhaps fixes #686).
### PORTABILITY / BUILD:
- Fixed glibc 2.43 const-preserving overloads of `strtok()`,
`strchr()` etc. by declaring the affected locals with the right
constness. Contributed by Holger Hoffstätte.
- Converted the bundled zlib 1.2.8 from K&R-style function
definitions to ANSI prototypes, so it builds with clang 16+.
- Avoid using `bool` as an identifier; it is a keyword in C23.
- `configure.ac`: check for xattr functions in libc first and only
fall back to `-lattr`, avoiding spurious overlinking when `-lattr`
happens to be installed. Contributed by Eli Schwartz.
- Made the build reproducible by honouring `SOURCE_DATE_EPOCH` for
the manpage date.
- Removed obsolete `popt/findme.c` and `popt/findme.h` that upstream
popt 1.14 folded into `popt.c` (fixes #710). Contributed by Alan
Coopersmith.
### INTERNAL:
- Made many module-global variables `const` so they can live in
`.rodata` and enable additional compiler optimization.
### DEVELOPER RELATED:
- Replaced `runtests.sh` with `runtests.py`, a Python test runner
that supports `--valgrind` (with per-process log files so valgrind
output no longer interferes with output comparisons) and
`-j/--parallel` execution for roughly a 7× speed-up on typical
hardware.
- Added a SIMD checksum self-test and a `clean-fname-underflow`
regression test.
- Various CI fixes for macOS and Cygwin (including adding
`simd-checksum` to the expected-skipped lists on platforms without
SIMD), and tests now run on `ubuntu-latest`.
- removed support for the unmaintained rsync-patches archive
------------------------------------------------------------------------------
# NEWS for rsync 3.4.1 (16 Jan 2025)
Release 3.4.1 is a fix for regressions introduced in 3.4.0
## Changes in this version:
### BUG FIXES:
- fixed handling of -H flag with conflict in internal flag values
- fixed a user after free in logging of failed rename
- fixed build on systems without openat()
- removed dependency on alloca() in bundled popt
### DEVELOPER RELATED:
- fix to permissions handling in the developer release script
------------------------------------------------------------------------------
# NEWS for rsync 3.4.0 (15 Jan 2025)
Release 3.4.0 is a security release that fixes a number of important vulnerabilities.
@@ -404,7 +52,6 @@ to develop and test fixes.
- added FreeBSD and Solaris CI builds
------------------------------------------------------------------------------
# NEWS for rsync 3.3.0 (6 Apr 2024)
## Changes in this version:
@@ -5169,10 +4816,7 @@ to develop and test fixes.
| RELEASE DATE | VER. | DATE OF COMMIT\* | PROTOCOL |
|--------------|--------|------------------|-------------|
| 20 May 2026 | 3.4.3 | | 32 |
| 28 Apr 2026 | 3.4.2 | | 32 |
| 16 Jan 2025 | 3.4.1 | | 32 |
| 15 Jan 2025 | 3.4.0 | 15 Jan 2025 | 32 |
| 15 Jan 2025 | 3.4.0 | | 32 |
| 06 Apr 2024 | 3.3.0 | | 31 |
| 20 Oct 2022 | 3.2.7 | | 31 |
| 09 Sep 2022 | 3.2.6 | | 31 |

View File

@@ -93,15 +93,6 @@ details.
[3]: https://rsync.samba.org/lists.html
DISCORD
-------
There is also an rsync [Discord server][d] for real-time chat about rsync
and its development.
[d]: https://discord.gg/Avfvy9zhdp
BUG REPORTS
-----------

View File

@@ -99,7 +99,7 @@ static void make_mask(char *mask, int plen, int addrlen)
return;
}
static int match_address(const char *addr, char *tok)
static int match_address(const char *addr, const char *tok)
{
char *p;
struct addrinfo hints, *resa, *rest;

4
acls.c
View File

@@ -697,7 +697,7 @@ static uint32 recv_acl_access(int f, uchar *name_follows_ptr)
static uchar recv_ida_entries(int f, ida_entries *ent)
{
uchar computed_mask_bits = 0;
int i, count = read_varint_bounded(f, 0, MAX_WIRE_ACL_COUNT, "ACL count");
int i, count = read_varint(f);
ent->idas = count ? new_array(id_access, count) : NULL;
ent->count = count;
@@ -713,7 +713,7 @@ static uchar recv_ida_entries(int f, ida_entries *ent)
else
id = recv_group_name(f, id, NULL);
} else if (access & NAME_IS_USER) {
if (inc_recurse && !numeric_ids)
if (inc_recurse && am_root && !numeric_ids)
id = match_uid(id);
} else {
if (inc_recurse && (!am_root || !numeric_ids))

View File

@@ -39,7 +39,7 @@ static int validate_backup_dir(void)
{
STRUCT_STAT st;
if (do_lstat_at(backup_dir_buf, &st) < 0) {
if (do_lstat(backup_dir_buf, &st) < 0) {
if (errno == ENOENT)
return 0;
rsyserr(FERROR, errno, "backup lstat %s failed", backup_dir_buf);
@@ -98,7 +98,7 @@ static BOOL copy_valid_path(const char *fname)
for ( ; b; name = b + 1, b = strchr(name, '/')) {
*b = '\0';
while (do_mkdir_at(backup_dir_buf, ACCESSPERMS) < 0) {
while (do_mkdir(backup_dir_buf, ACCESSPERMS) < 0) {
if (errno == EEXIST) {
val = validate_backup_dir();
if (val > 0)
@@ -197,7 +197,7 @@ static inline int link_or_rename(const char *from, const char *to,
if (IS_SPECIAL(stp->st_mode) || IS_DEVICE(stp->st_mode))
return 0; /* Use copy code. */
#endif
if (do_link_at(from, to) == 0) {
if (do_link(from, to) == 0) {
if (DEBUG_GTE(BACKUP, 1))
rprintf(FINFO, "make_backup: HLINK %s successful.\n", from);
return 2;
@@ -207,7 +207,7 @@ static inline int link_or_rename(const char *from, const char *to,
return 0;
}
#endif
if (do_rename_at(from, to) == 0) {
if (do_rename(from, to) == 0) {
if (stp->st_nlink > 1 && !S_ISDIR(stp->st_mode)) {
/* If someone has hard-linked the file into the backup
* dir, rename() might return success but do nothing! */
@@ -246,7 +246,7 @@ int make_backup(const char *fname, BOOL prefer_rename)
goto success;
if (errno == EEXIST || errno == EISDIR) {
STRUCT_STAT bakst;
if (do_lstat_at(buf, &bakst) == 0) {
if (do_lstat(buf, &bakst) == 0) {
int flags = get_del_for_flag(bakst.st_mode) | DEL_FOR_BACKUP | DEL_RECURSE;
if (delete_item(buf, bakst.st_mode, flags) != 0)
return 0;
@@ -277,7 +277,7 @@ int make_backup(const char *fname, BOOL prefer_rename)
/* Check to see if this is a device file, or link */
if ((am_root && preserve_devices && IS_DEVICE(file->mode))
|| (preserve_specials && IS_SPECIAL(file->mode))) {
if (do_mknod_at(buf, file->mode, sx.st.st_rdev) < 0)
if (do_mknod(buf, file->mode, sx.st.st_rdev) < 0)
rsyserr(FERROR, errno, "mknod %s failed", full_fname(buf));
else if (DEBUG_GTE(BACKUP, 1))
rprintf(FINFO, "make_backup: DEVICE %s successful.\n", fname);
@@ -294,7 +294,7 @@ int make_backup(const char *fname, BOOL prefer_rename)
}
ret = 2;
} else {
if (do_symlink_at(sl, buf) < 0)
if (do_symlink(sl, buf) < 0)
rsyserr(FERROR, errno, "link %s -> \"%s\"", full_fname(buf), sl);
else if (DEBUG_GTE(BACKUP, 1))
rprintf(FINFO, "make_backup: SYMLINK %s successful.\n", fname);

View File

@@ -75,7 +75,7 @@ static int *flag_ptr[] = {
NULL
};
static const char *const flag_name[] = {
static char *flag_name[] = {
"--recurse (-r)",
"--owner (-o)",
"--group (-g)",

View File

@@ -176,7 +176,7 @@ void parse_checksum_choice(int final_call)
if (valid_checksums.negotiated_nni)
xfer_sum_nni = file_sum_nni = valid_checksums.negotiated_nni;
else {
const char *cp = checksum_choice ? strchr(checksum_choice, ',') : NULL;
char *cp = checksum_choice ? strchr(checksum_choice, ',') : NULL;
if (cp) {
xfer_sum_nni = parse_csum_name(checksum_choice, cp - checksum_choice);
file_sum_nni = parse_csum_name(cp+1, -1);
@@ -366,8 +366,9 @@ void get_checksum2(char *buf, int32 len, char *sum)
mdfour_begin(&m);
if (len > len1 || !buf1) {
free(buf1);
if (len > len1) {
if (buf1)
free(buf1);
buf1 = new_array(char, len+4);
len1 = len;
}

View File

@@ -198,7 +198,7 @@ NORETURN void _exit_cleanup(int code, const char *file, int line)
switch_step++;
if (cleanup_fname)
do_unlink_at(cleanup_fname);
do_unlink(cleanup_fname);
if (exit_code)
kill_all(SIGUSR1);
if (cleanup_pid && cleanup_pid == getpid()) {
@@ -269,16 +269,8 @@ NORETURN void _exit_cleanup(int code, const char *file, int line)
break;
}
if (called_from_signal_handler) {
#ifdef GCOV_COVERAGE
/* _exit() bypasses the gcov atexit flush; rsync's generator (and
* other processes) normally finish via the signal handler, so
* without this they would write no .gcda. Harmless otherwise. */
extern void __gcov_dump(void);
__gcov_dump();
#endif
if (called_from_signal_handler)
_exit(exit_code);
}
exit(exit_code);
}

View File

@@ -167,7 +167,7 @@ int read_proxy_protocol_header(int fd)
char sig[PROXY_V2_SIG_SIZE];
char ver_cmd;
char fam;
unsigned char len[2];
char len[2];
union {
struct {
char src_addr[4];

View File

@@ -30,7 +30,6 @@ extern int list_only;
extern int am_sender;
extern int am_server;
extern int am_daemon;
extern int am_chrooted;
extern int am_root;
extern int msgs2stderr;
extern int rsync_port;
@@ -39,7 +38,6 @@ extern int ignore_errors;
extern int preserve_xattrs;
extern int kluge_around_eof;
extern int munge_symlinks;
extern int use_secure_symlinks;
extern int open_noatime;
extern int sanitize_paths;
extern int numeric_ids;
@@ -978,14 +976,11 @@ static int rsync_module(int f_in, int f_out, int i, const char *addr, const char
}
if (use_chroot) {
/* Cache timezone data before chroot makes /etc/localtime inaccessible */
tzset();
if (chroot(module_chdir)) {
rsyserr(FLOG, errno, "chroot(\"%s\") failed", module_chdir);
io_printf(f_out, "@ERROR: chroot failed\n");
return -1;
}
am_chrooted = 1;
module_chdir = module_dir;
}
@@ -1008,15 +1003,6 @@ static int rsync_module(int f_in, int f_out, int i, const char *addr, const char
}
}
/* Enable secure symlink handling for any non-chrooted daemon module.
* This prevents TOCTOU race attacks where an attacker could switch a
* directory to a symlink between path validation and file open.
* Match the gate used by the do_*_at() wrappers in syscall.c
* (am_daemon && !am_chrooted) -- the protection has nothing to do
* with symlink munging, so a module configured with
* "munge symlinks = false" must still get the secure-open path. */
use_secure_symlinks = am_daemon && !am_chrooted;
if (gid_list.count) {
gid_t *gid_array = gid_list.items;
if (setgid(gid_array[0])) {
@@ -1312,49 +1298,13 @@ int start_daemon(int f_in, int f_out)
if (lp_proxy_protocol() && !read_proxy_protocol_header(f_in))
return -1;
/* Do reverse DNS lookup before chroot/setuid. The result is cached,
* so the later client_name() call will use this cached value. This
* ensures hostname-based ACLs work even when DNS is unavailable
* after chroot.
*
* "reverse lookup" can be set globally OR per-module, so we also
* scan each module: a deployment with "reverse lookup = no" in the
* global section but "reverse lookup = yes" in a specific module
* still triggers a post-chroot lookup at access-check time
* (rsync_module() in this file), which would also fail in the
* chroot and turn hostname-based deny rules into silent bypasses. */
{
int need_reverse = lp_reverse_lookup(-1);
int j, num_modules = lp_num_modules();
for (j = 0; !need_reverse && j < num_modules; j++) {
if (lp_reverse_lookup(j))
need_reverse = 1;
}
if (need_reverse)
(void)client_name(client_addr(f_in));
}
p = lp_daemon_chroot();
if (*p) {
log_init(0); /* Make use we've initialized syslog before chrooting. */
tzset();
if (chroot(p) < 0) {
rsyserr(FLOG, errno, "daemon chroot(\"%s\") failed", p);
return -1;
}
/* Deliberately do NOT set am_chrooted here. am_chrooted
* gates the per-module symlink-race defenses
* (secure_relative_open() and the do_*_at() wrappers in
* syscall.c) and means "the kernel is enforcing path
* confinement at the module boundary". The daemon chroot
* confines path resolution to the daemon-chroot directory,
* not to any individual module path -- modules sharing the
* daemon chroot are still distinguishable filesystem
* subtrees and a sender-controlled symlink in module A
* could redirect a syscall to module B (or to other files
* inside the daemon chroot) without the per-module
* defenses. Leave am_chrooted=0 here so secure_relative_open()
* still fires for "use chroot = no" modules. */
if (chdir("/") < 0) {
rsyserr(FLOG, errno, "daemon chdir(\"/\") failed");
return -1;

View File

@@ -52,7 +52,6 @@ extern int need_messages_from_generator;
extern int delete_mode, delete_before, delete_during, delete_after;
extern int do_compression;
extern int do_compression_level;
extern int do_compression_threads;
extern int saw_stderr_opt;
extern int msgs2stderr;
extern char *shell_cmd;
@@ -132,7 +131,7 @@ static const char *client_info;
* of that protocol for it to be advertised as available. */
static void check_sub_protocol(void)
{
const char *dot;
char *dot;
int their_protocol, their_sub;
int our_sub = get_subprotocol_version();
@@ -415,7 +414,7 @@ static const char *getenv_nstr(int ntype)
env_str = ntype == NSTR_COMPRESS ? "zlib" : protocol_version >= 30 ? "md5" : "md4";
if (am_server && env_str) {
const char *cp = strchr(env_str, '&');
char *cp = strchr(env_str, '&');
if (cp)
env_str = cp + 1;
}

View File

@@ -82,32 +82,6 @@ if test x"$enable_profile" = x"yes"; then
CFLAGS="$CFLAGS -pg"
fi
dnl Coverage build (gcov) for `make coverage`. NOTE: --enable-profile above is
dnl gprof (-pg) and is NOT coverage. -O0 keeps branch coverage meaningful;
dnl -fprofile-update=atomic keeps the shared .gcda counters correct while the
dnl suite runs many rsync processes in parallel.
AC_ARG_ENABLE(coverage,
AS_HELP_STRING([--enable-coverage],[build with gcov instrumentation for `make coverage`]))
if test x"$enable_coverage" = x"yes"; then
CFLAGS="$CFLAGS --coverage -fprofile-update=atomic -O0"
CXXFLAGS="$CXXFLAGS --coverage -fprofile-update=atomic -O0"
LDFLAGS="$LDFLAGS --coverage"
AC_DEFINE([GCOV_COVERAGE], 1,
[Flush gcov counters at exit_cleanup: rsync's children exit via _exit(), which bypasses the gcov atexit handler, so without this no .gcda is written for the receiver/generator/daemon-worker processes.])
fi
dnl openat2(RESOLVE_BENEATH) is used on Linux 5.6+ for the secure resolver.
dnl --disable-openat2 forces the portable per-component O_NOFOLLOW fallback to
dnl run as the primary resolver on ordinary Linux, so that tier is exercised
dnl (and coverage-counted) without needing a pre-5.6 kernel. Behaviour-neutral
dnl by default (the knob only REMOVES a tier when explicitly disabled).
AC_ARG_ENABLE(openat2,
AS_HELP_STRING([--disable-openat2],[do not use Linux openat2(RESOLVE_BENEATH); force the portable resolver (for exercising the fallback tier)]))
if test x"$enable_openat2" != x"no"; then
AC_DEFINE([HAVE_OPENAT2], 1,
[Define to use Linux openat2(RESOLVE_BENEATH) in secure_relative_open where available.])
fi
AC_MSG_CHECKING([if md2man can create manpages])
if test x"$ac_cv_path_PYTHON3" = x; then
AC_MSG_RESULT(no - python3 not found)
@@ -1418,7 +1392,7 @@ else
AC_DEFINE(HAVE_LINUX_XATTRS, 1, [True if you have Linux xattrs (or equivalent)])
AC_DEFINE(SUPPORT_XATTRS, 1)
AC_DEFINE(NO_SYMLINK_USER_XATTRS, 1, [True if symlinks do not support user xattrs])
AC_SEARCH_LIBS(getxattr,attr)
AC_CHECK_LIB(attr,getxattr)
;;
darwin*)
AC_MSG_RESULT(Using OS X xattrs)

View File

@@ -6,7 +6,7 @@
BEGIN {
heading = "/* DO NOT EDIT THIS FILE! It is auto-generated from a list of values in " ARGV[1] "! */\n\n"
sect = psect = defines = accessors = prior_ptype = ""
parms = "\nstatic const struct parm_struct parm_table[] = {"
parms = "\nstatic struct parm_struct parm_table[] = {"
comment_fmt = "\n/********** %s **********/\n"
tdstruct = "typedef struct {"
}

View File

@@ -98,7 +98,7 @@ static enum delret delete_dir_contents(char *fname, uint16 flags)
strlcpy(p, fp->basename, remainder);
if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
do_chmod_at(fname, fp->mode | S_IWUSR);
do_chmod(fname, fp->mode | S_IWUSR);
/* Save stack by recursing to ourself directly. */
if (S_ISDIR(fp->mode)) {
if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
@@ -139,7 +139,7 @@ enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
}
if (flags & DEL_NO_UID_WRITE)
do_chmod_at(fbuf, mode | S_IWUSR);
do_chmod(fbuf, mode | S_IWUSR);
if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
/* This only happens on the first call to delete_item() since
@@ -160,7 +160,7 @@ enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
if (S_ISDIR(mode)) {
what = "rmdir";
ok = do_rmdir_at(fbuf) == 0;
ok = do_rmdir(fbuf) == 0;
} else {
if (make_backups > 0 && !(flags & DEL_FOR_BACKUP) && (backup_dir || !is_backup_file(fbuf))) {
what = "make_backup";

View File

@@ -904,7 +904,7 @@ static int rule_matches(const char *fname, filter_rule *ex, int name_flags)
{
int slash_handling, str_cnt = 0, anchored_match = 0;
int ret_match = ex->rflags & FILTRULE_NEGATE ? 0 : 1;
const char *p, *pattern = ex->pattern;
char *p, *pattern = ex->pattern;
const char *strings[16]; /* more than enough */
const char *name = fname + (*fname == '/');

21
flist.c
View File

@@ -840,9 +840,9 @@ static struct file_struct *recv_file_entry(int f, struct file_list *flist, int x
}
if (xflags & XMIT_MOD_NSEC)
#ifndef CAN_SET_NSEC
(void)read_varint_bounded(f, 0, MAX_WIRE_NSEC, "modtime_nsec");
(void)read_varint(f);
#else
modtime_nsec = read_varint_bounded(f, 0, MAX_WIRE_NSEC, "modtime_nsec");
modtime_nsec = read_varint(f);
else
modtime_nsec = 0;
#endif
@@ -861,19 +861,8 @@ static struct file_struct *recv_file_entry(int f, struct file_list *flist, int x
#endif
}
#endif
if (!(xflags & XMIT_SAME_MODE)) {
if (!(xflags & XMIT_SAME_MODE))
mode = from_wire_mode(read_int(f));
/* Reject modes whose type bits are not one of the standard
* file types; otherwise garbage mode values propagate through
* the file-type checks below unpredictably. */
if (!S_ISREG(mode) && !S_ISDIR(mode) && !S_ISLNK(mode)
&& !S_ISCHR(mode) && !S_ISBLK(mode)
&& !S_ISFIFO(mode) && !S_ISSOCK(mode)) {
rprintf(FERROR, "invalid file mode 0%o for %s [%s]\n",
(unsigned)mode, lastname, who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
}
if (atimes_ndx && !S_ISDIR(mode) && !(xflags & XMIT_SAME_ATIME)) {
atime = read_varlong(f, 4);
#if SIZEOF_TIME_T < SIZEOF_INT64
@@ -3178,8 +3167,8 @@ static void output_flist(struct file_list *flist)
} else
*uidbuf = '\0';
if (gid_ndx) {
static const char parens[] = "(\0)\0\0\0";
const char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
static char parens[] = "(\0)\0\0\0";
char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
pp, F_GROUP(file), pp + 2);
} else

View File

@@ -229,13 +229,11 @@ static int read_delay_line(char *buf, int *flags_p)
*flags_p = 0;
if (sscanf(bp, "%x ", &mode) != 1) {
goto invalid_data;
invalid_data:
rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
return -1;
}
past_space = strchr(bp, ' ');
if (!past_space) {
goto invalid_data;
}
past_space++;
past_space = strchr(bp, ' ') + 1;
len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
read_pos = j + 1;
@@ -249,10 +247,6 @@ static int read_delay_line(char *buf, int *flags_p)
memcpy(buf, past_space, len);
return mode;
invalid_data:
rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
return -1;
}
static void do_delayed_deletions(char *delbuf)
@@ -990,7 +984,7 @@ static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
if (find_exact_for_existing) {
if (alt_dest_type == LINK_DEST && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
return -1;
if (do_unlink_at(fname) < 0 && errno != ENOENT)
if (do_unlink(fname) < 0 && errno != ENOENT)
goto got_nothing_for_ya;
}
#ifdef SUPPORT_HARD_LINKS
@@ -1118,7 +1112,7 @@ static int try_dests_non(struct file_struct *file, char *fname, int ndx,
&& !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
#endif
&& !S_ISDIR(file->mode)) {
if (do_link_at(cmpbuf, fname) < 0) {
if (do_link(cmpbuf, fname) < 0) {
rsyserr(FERROR_XFER, errno,
"failed to hard-link %s with %s",
cmpbuf, fname);
@@ -1321,7 +1315,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
}
}
if (relative_paths && !implied_dirs && file->mode != 0
&& do_stat_at(dn, &sx.st) < 0) {
&& do_stat(dn, &sx.st) < 0) {
if (dry_run)
goto parent_is_dry_missing;
if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
@@ -1433,7 +1427,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
&& (stype == FT_DIR
|| delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
goto cleanup; /* Any errors get reported later. */
if (do_mkdir_at(fname, (file->mode|added_perms) & 0700) == 0)
if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
file->flags |= FLAG_DIR_CREATED;
goto cleanup;
}
@@ -1475,10 +1469,10 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
itemize(fnamecmp, file, ndx, statret, &sx,
statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
}
if (real_ret != 0 && do_mkdir_at(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
if (!relative_paths || errno != ENOENT
|| make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
|| (do_mkdir_at(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
|| (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
rsyserr(FERROR_XFER, errno,
"recv_generator: mkdir %s failed",
full_fname(fname));
@@ -1505,7 +1499,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
#ifdef HAVE_CHMOD
if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
mode_t mode = file->mode | S_IRWXU;
if (do_chmod_at(fname, mode) < 0) {
if (do_chmod(fname, mode) < 0) {
rsyserr(FERROR_XFER, errno,
"failed to modify permissions on %s",
full_fname(fname));
@@ -1814,7 +1808,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
;
else if (quick_check_ok(FT_REG, fnamecmp, file, &sx.st)) {
if (partialptr) {
do_unlink_at(partialptr);
do_unlink(partialptr);
handle_partial_dir(partialptr, PDIR_DELETE);
}
set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT | maybe_ATTRS_ACCURATE_TIME);
@@ -1902,7 +1896,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
back_file = NULL;
goto cleanup;
}
if ((f_copy = do_open_at(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
unmake_file(back_file);
back_file = NULL;
@@ -2022,7 +2016,7 @@ int atomic_create(struct file_struct *file, char *fname, const char *slnk, const
if (slnk) {
#ifdef SUPPORT_LINKS
if (do_symlink_at(slnk, create_name) < 0) {
if (do_symlink(slnk, create_name) < 0) {
rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
full_fname(create_name), slnk);
return 0;
@@ -2038,7 +2032,7 @@ int atomic_create(struct file_struct *file, char *fname, const char *slnk, const
return 0;
#endif
} else {
if (do_mknod_at(create_name, file->mode, rdev) < 0) {
if (do_mknod(create_name, file->mode, rdev) < 0) {
rsyserr(FERROR_XFER, errno, "mknod %s failed",
full_fname(create_name));
return 0;
@@ -2046,14 +2040,10 @@ int atomic_create(struct file_struct *file, char *fname, const char *slnk, const
}
if (!skip_atomic) {
if (do_rename_at(tmpname, fname) < 0) {
char *full_tmpname = strdup(full_fname(tmpname));
if (full_tmpname == NULL)
out_of_memory("atomic_create");
if (do_rename(tmpname, fname) < 0) {
rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
full_tmpname, full_fname(fname));
free(full_tmpname);
do_unlink_at(tmpname);
full_fname(tmpname), full_fname(fname));
do_unlink(tmpname);
return 0;
}
}
@@ -2117,7 +2107,7 @@ static void touch_up_dirs(struct file_list *flist, int ndx)
continue;
fname = f_name(file, NULL);
if (fix_dir_perms)
do_chmod_at(fname, file->mode);
do_chmod(fname, file->mode);
if (need_retouch_dir_times) {
STRUCT_STAT st;
if (link_stat(fname, &st, 0) == 0 && mtime_differs(&st, file)) {
@@ -2152,8 +2142,6 @@ void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
if (send_failed)
ndx = get_hlink_num();
flist = flist_for_ndx(ndx, "check_for_finished_files.1");
if (ndx < flist->ndx_start)
exit_cleanup(RERR_PROTOCOL);
file = flist->files[ndx - flist->ndx_start];
assert(file->flags & FLAG_HLINKED);
if (send_failed)
@@ -2182,8 +2170,6 @@ void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
flist = cur_flist;
cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
if (ndx < cur_flist->ndx_start)
exit_cleanup(RERR_PROTOCOL);
file = cur_flist->files[ndx - cur_flist->ndx_start];
if (solo_file)

View File

@@ -454,7 +454,7 @@ int hard_link_check(struct file_struct *file, int ndx, char *fname,
int hard_link_one(struct file_struct *file, const char *fname,
const char *oldname, int terse)
{
if (do_link_at(oldname, fname) < 0) {
if (do_link(oldname, fname) < 0) {
enum logcode code;
if (terse) {
if (!INFO_GTE(NAME, 1))

63
io.c
View File

@@ -117,7 +117,7 @@ static int active_filecnt = 0;
static OFF_T active_bytecnt = 0;
static int first_message = 1;
static const char int_byte_extra[64] = {
static char int_byte_extra[64] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* (00 - 3F)/4 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* (40 - 7F)/4 */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* (80 - BF)/4 */
@@ -1090,9 +1090,6 @@ static void got_flist_entry_status(enum festatus status, int ndx)
{
struct file_list *flist = flist_for_ndx(ndx, "got_flist_entry_status");
if (ndx < flist->ndx_start)
exit_cleanup(RERR_PROTOCOL);
if (remove_source_files) {
active_filecnt--;
active_bytecnt -= F_LENGTH(flist->files[ndx - flist->ndx_start]);
@@ -1161,8 +1158,8 @@ void set_io_timeout(int secs)
static void check_for_d_option_error(const char *msg)
{
static const char rsync263_opts[] = "BCDHIKLPRSTWabceghlnopqrtuvxz";
const char *colon;
static char rsync263_opts[] = "BCDHIKLPRSTWabceghlnopqrtuvxz";
char *colon;
int saw_d = 0;
if (*msg != 'r'
@@ -1868,45 +1865,6 @@ int64 read_varlong(int f, uchar min_bytes)
return u.x;
}
/* Read an int32 and verify lo <= v <= hi. On out-of-range, abort with a
* protocol error naming "what". The bound is co-located with the read so it
* cannot be forgotten by a downstream user. */
int32 read_int_bounded(int f, int32 lo, int32 hi, const char *what)
{
int32 v = read_int(f);
if (v < lo || v > hi) {
rprintf(FERROR, "wire value %s out of range: %ld not in [%ld,%ld] [%s]\n",
what, (long)v, (long)lo, (long)hi, who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
return v;
}
/* As read_int_bounded but for varint-encoded values. */
int32 read_varint_bounded(int f, int32 lo, int32 hi, const char *what)
{
int32 v = read_varint(f);
if (v < lo || v > hi) {
rprintf(FERROR, "wire value %s out of range: %ld not in [%ld,%ld] [%s]\n",
what, (long)v, (long)lo, (long)hi, who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
return v;
}
/* Read a varint that will be used as a size_t. Rejects negative values
* (which would wrap to ~SIZE_MAX) and values exceeding the supplied max. */
size_t read_varint_size(int f, size_t max, const char *what)
{
int32 v = read_varint(f);
if (v < 0 || (size_t)v > max) {
rprintf(FERROR, "wire size %s out of range: %ld > %lu [%s]\n",
what, (long)v, (unsigned long)max, who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
return (size_t)v;
}
int64 read_longint(int f)
{
#if SIZEOF_INT64 >= 8
@@ -2013,21 +1971,6 @@ void read_sum_head(int f, struct sum_struct *sum)
(long)sum->count, who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
/* Guard against integer overflow in downstream allocations sized by
* count*element_size. my_alloc uses divide-not-multiply so it is
* already wraparound-safe, but checking here gives a clearer error
* and also covers the (size_t)count * xfer_sum_len arithmetic that
* is performed *before* reaching my_alloc. */
if (xfer_sum_len > 0 && (size_t)sum->count > SIZE_MAX / (size_t)xfer_sum_len) {
rprintf(FERROR, "Invalid checksum count %ld (too large) [%s]\n",
(long)sum->count, who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
if ((size_t)sum->count > SIZE_MAX / sizeof(struct sum_buf)) {
rprintf(FERROR, "Invalid checksum count %ld (sum_buf overflow) [%s]\n",
(long)sum->count, who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
sum->blength = read_int(f);
if (sum->blength < 0 || sum->blength > max_blength) {
rprintf(FERROR, "Invalid block length %ld [%s]\n",

View File

@@ -1 +1 @@
#define LATEST_YEAR "2026"
#define LATEST_YEAR "2025"

View File

@@ -197,7 +197,7 @@ void md5_update(md_context *ctx, const uchar *input, uint32 length)
memcpy(ctx->buffer + left, input, length);
}
static const uchar md5_padding[CSUM_CHUNK] = { 0x80 };
static uchar md5_padding[CSUM_CHUNK] = { 0x80 };
void md5_result(md_context *ctx, uchar digest[MD5_DIGEST_LEN])
{

View File

@@ -126,18 +126,9 @@ ssize_t sys_llistxattr(const char *path, char *list, size_t size)
unsigned char keylen;
ssize_t off, len = extattr_list_link(path, EXTATTR_NAMESPACE_USER, list, size);
if (len <= 0 || size == 0)
if (len <= 0 || (size_t)len > size)
return len;
if ((size_t)len >= size) {
/* FreeBSD extattr_list_xx() returns 'size' as 'len' in case there are
more data available, truncating the output, we solve this by signalling
ERANGE in case len == size so that the code in xattrs.c will retry with
a bigger buffer */
errno = ERANGE;
return -1;
}
/* FreeBSD puts a single-byte length before each string, with no '\0'
* terminator. We need to change this into a series of null-terminted
* strings. Since the size is the same, we can simply transform the
@@ -145,7 +136,7 @@ ssize_t sys_llistxattr(const char *path, char *list, size_t size)
for (off = 0; off < len; off += keylen + 1) {
keylen = ((unsigned char*)list)[off];
if (off + keylen >= len) {
/* Should be impossible, but bugs happen! */
/* Should be impossible, but kernel bugs happen! */
errno = EINVAL;
return -1;
}

View File

@@ -65,7 +65,7 @@ typedef enum {
struct enum_list {
int value;
const char *name;
char *name;
};
struct parm_struct {
@@ -73,7 +73,7 @@ struct parm_struct {
parm_type type;
parm_class class;
void *ptr;
const struct enum_list *enum_list;
struct enum_list *enum_list;
unsigned flags;
};
@@ -95,7 +95,7 @@ static item_list section_list = EMPTY_ITEM_LIST;
static int iSectionIndex = -1;
static BOOL bInGlobalSection = True;
static const struct enum_list enum_syslog_facility[] = {
static struct enum_list enum_syslog_facility[] = {
#ifdef LOG_AUTH
{ LOG_AUTH, "auth" },
#endif
@@ -178,7 +178,7 @@ static char *expand_vars(const char *str)
for (t = buf, f = str; bufsize && *f; ) {
if (*f == '%' && isUpper(f+1)) {
const char *percent = strchr(f+1, '%');
char *percent = strchr(f+1, '%');
if (percent && percent - f < bufsize) {
char *val;
strlcpy(t, f+1, percent - f);

12
log.c
View File

@@ -456,17 +456,11 @@ void rsyserr(enum logcode code, int errcode, const char *format, ...)
char buf[BIGPATHBUFLEN];
size_t len;
/* snprintf returns the would-have-been length on truncation, so
* each cumulative call must be guarded; if not, sizeof buf - len
* can underflow when promoted to size_t and the next call writes
* past the buffer. */
len = snprintf(buf, sizeof buf, RSYNC_NAME ": [%s] ", who_am_i());
if (len < sizeof buf) {
va_start(ap, format);
len += vsnprintf(buf + len, sizeof buf - len, format, ap);
va_end(ap);
}
va_start(ap, format);
len += vsnprintf(buf + len, sizeof buf - len, format, ap);
va_end(ap);
if (len < sizeof buf) {
len += snprintf(buf + len, sizeof buf - len,

34
main.c
View File

@@ -239,11 +239,11 @@ void write_del_stats(int f)
void read_del_stats(int f)
{
stats.deleted_files = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_files");
stats.deleted_files += stats.deleted_dirs = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_dirs");
stats.deleted_files += stats.deleted_symlinks = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_symlinks");
stats.deleted_files += stats.deleted_devices = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_devices");
stats.deleted_files += stats.deleted_specials = read_varint_bounded(f, 0, MAX_WIRE_DEL_STAT, "deleted_specials");
stats.deleted_files = read_varint(f);
stats.deleted_files += stats.deleted_dirs = read_varint(f);
stats.deleted_files += stats.deleted_symlinks = read_varint(f);
stats.deleted_files += stats.deleted_devices = read_varint(f);
stats.deleted_files += stats.deleted_specials = read_varint(f);
}
static void become_copy_as_user()
@@ -386,7 +386,7 @@ static void handle_stats(int f)
static void output_itemized_counts(const char *prefix, int *counts)
{
static char *const labels[] = { "reg", "dir", "link", "dev", "special" };
static char *labels[] = { "reg", "dir", "link", "dev", "special" };
char buf[1024], *pre = " (";
int j, len = 0;
int total = counts[0];
@@ -394,18 +394,9 @@ static void output_itemized_counts(const char *prefix, int *counts)
counts[0] -= counts[1] + counts[2] + counts[3] + counts[4];
for (j = 0; j < 5; j++) {
if (counts[j]) {
/* snprintf can return more than its size arg
* on truncation; keep len <= sizeof buf - 2 so
* the closing ')' and trailing NUL always
* have room and the next iteration's
* sizeof buf - len - 2 cannot underflow. */
if (len >= (int)sizeof buf - 2)
break;
len += snprintf(buf+len, sizeof buf - len - 2,
"%s%s: %s",
pre, labels[j], comma_num(counts[j]));
if (len > (int)sizeof buf - 2)
len = (int)sizeof buf - 2;
pre = ", ";
}
}
@@ -1568,10 +1559,6 @@ static int start_client(int argc, char *argv[])
shell_user = shell_machine;
shell_machine = p+1;
}
if (*shell_machine == '-') {
rprintf(FERROR, "Invalid remote host: hostnames may not start with '-'.\n");
exit_cleanup(RERR_SYNTAX);
}
}
if (DEBUG_GTE(CMD, 2)) {
@@ -1618,11 +1605,6 @@ static void sigusr2_handler(UNUSED(int val))
if (!am_server)
output_summary();
close_all();
#ifdef GCOV_COVERAGE
/* The receiver child is killed here via SIGUSR2 and exits with _exit(),
* bypassing the gcov atexit flush; without this it writes no .gcda. */
{ extern void __gcov_dump(void); __gcov_dump(); }
#endif
if (got_xfer_error)
_exit(RERR_PARTIAL);
_exit(0);
@@ -1761,9 +1743,7 @@ int main(int argc,char *argv[])
our_gid = MY_GID();
am_root = our_uid == ROOT_UID;
// DISPLAY should not be emptied unconditionally
if (!getenv("SSH_ASKPASS"))
unset_env_var("DISPLAY");
unset_env_var("DISPLAY");
#if defined USE_OPENSSL && defined SET_OPENSSL_CONF
#define TO_STR2(x) #x

View File

@@ -120,7 +120,6 @@ TZ_RE = re.compile(r'^#define\s+MAINTAINER_TZ_OFFSET\s+(-?\d+(\.\d+)?)', re.M)
VAR_REF_RE = re.compile(r'\$\{(\w+)\}')
VERSION_RE = re.compile(r' (\d[.\d]+)[, ]')
BIN_CHARS_RE = re.compile(r'[\1-\7]+')
LONG_OPT_DASH_RE = re.compile(r'(--\w[-\w]+)')
SPACE_DOUBLE_DASH_RE = re.compile(r'\s--(\s)')
NON_SPACE_SINGLE_DASH_RE = re.compile(r'(^|\W)-')
WHITESPACE_RE = re.compile(r'\s')
@@ -248,9 +247,6 @@ def find_man_substitutions():
env_subs['date'] = time.strftime('%d %b %Y', time.gmtime(mtime + tz_offset)).lstrip('0')
if 'SOURCE_DATE_EPOCH' in os.environ:
env_subs['date'] = time.strftime('%d %b %Y', time.gmtime(int(os.environ.get('SOURCE_DATE_EPOCH', time.time()))))
def html_via_commonmark(txt):
return commonmark.HtmlRenderer().render(commonmark.Parser().parse(txt))
@@ -544,7 +540,6 @@ class TransformHtml(HTMLParser):
if st.in_pre:
html = htmlify(txt)
else:
txt = LONG_OPT_DASH_RE.sub(lambda x: x.group(1).replace('-', NBR_DASH[0]), txt)
txt = SPACE_DOUBLE_DASH_RE.sub(NBR_SPACE[0] + r'--\1', txt).replace('--', NBR_DASH[0]*2)
txt = NON_SPACE_SINGLE_DASH_RE.sub(r'\1' + NBR_DASH[0], txt)
html = htmlify(txt)

View File

@@ -86,7 +86,6 @@ int sparse_files = 0;
int preallocate_files = 0;
int do_compression = 0;
int do_compression_level = CLVL_NOT_SPECIFIED;
int do_compression_threads = 0; /*n = 0 use rsync thread, n >= 1 spawn n threads for compression */
int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
int am_server = 0;
int am_sender = 0;
@@ -114,20 +113,11 @@ int mkpath_dest_arg = 0;
int allow_inc_recurse = 1;
int xfer_dirs = -1;
int am_daemon = 0;
/* Set after a successful per-module chroot ("use chroot = yes") in
* clientserver.c. NOT set for the daemon-level "daemon chroot = /X"
* chroot: that confines path resolution to /X, but module paths
* /X/modA, /X/modB, etc. are not chroot boundaries, so the per-module
* symlink-race defenses (secure_relative_open() / do_*_at() in
* syscall.c, gated by `am_daemon && !am_chrooted`) must still fire
* even when the daemon is inside a daemon chroot. */
int am_chrooted = 0;
int connect_timeout = 0;
int keep_partial = 0;
int safe_symlinks = 0;
int copy_unsafe_links = 0;
int munge_symlinks = 0;
int use_secure_symlinks = 0;
int size_only = 0;
int daemon_bwlimit = 0;
int bwlimit = 0;
@@ -235,7 +225,7 @@ char *iconv_opt =
struct chmod_mode_struct *chmod_modes = NULL;
static const char *const debug_verbosity[] = {
static const char *debug_verbosity[] = {
/*0*/ NULL,
/*1*/ NULL,
/*2*/ "BIND,CMD,CONNECT,DEL,DELTASUM,DUP,FILTER,FLIST,ICONV",
@@ -246,7 +236,7 @@ static const char *const debug_verbosity[] = {
#define MAX_VERBOSITY ((int)(sizeof debug_verbosity / sizeof debug_verbosity[0]) - 1)
static const char *const info_verbosity[1+MAX_VERBOSITY] = {
static const char *info_verbosity[1+MAX_VERBOSITY] = {
/*0*/ "NONREG",
/*1*/ "COPY,DEL,FLIST,MISC,NAME,STATS,SYMSAFE",
/*2*/ "BACKUP,MISC2,MOUNT,NAME2,REMOVE,SKIP",
@@ -484,7 +474,7 @@ static void parse_output_words(struct output_struct *words, short *levels, const
static void output_item_help(struct output_struct *words)
{
short *levels = words == info_words ? info_levels : debug_levels;
const char *const*verbosity = words == info_words ? info_verbosity : debug_verbosity;
const char **verbosity = words == info_words ? info_verbosity : debug_verbosity;
char buf[128], *opt, *fmt = "%-10s %s\n";
int j;
@@ -766,8 +756,6 @@ static struct poptOption long_options[] = {
{"skip-compress", 0, POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
{"compress-level", 0, POPT_ARG_INT, &do_compression_level, 0, 0, 0 },
{"zl", 0, POPT_ARG_INT, &do_compression_level, 0, 0, 0 },
{"compress-threads", 0, POPT_ARG_INT, &do_compression_threads, 0, 0, 0 },
{"zt", 0, POPT_ARG_INT, &do_compression_threads, 0, 0, 0 },
{0, 'P', POPT_ARG_NONE, 0, 'P', 0, 0 },
{"progress", 0, POPT_ARG_VAL, &do_progress, 1, 0, 0 },
{"no-progress", 0, POPT_ARG_VAL, &do_progress, 0, 0, 0 },
@@ -856,7 +844,7 @@ static struct poptOption long_options[] = {
{0,0,0,0, 0, 0, 0}
};
static const struct poptOption long_daemon_options[] = {
static struct poptOption long_daemon_options[] = {
/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
{"address", 0, POPT_ARG_STRING, &bind_address, 0, 0, 0 },
{"bwlimit", 0, POPT_ARG_INT, &daemon_bwlimit, 0, 0, 0 },
@@ -1168,7 +1156,7 @@ static time_t parse_time(const char *arg)
{
const char *cp;
time_t val, now = time(NULL);
struct tm t, tmp, *today = localtime_r(&now, &tmp);
struct tm t, *today = localtime(&now);
int in_date, old_mday, n;
memset(&t, 0, sizeof t);
@@ -1381,10 +1369,6 @@ int parse_arguments(int *argc_p, const char ***argv_p)
/* TODO: Call poptReadDefaultConfig; handle errors. */
pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
if (pc == NULL) {
strlcpy(err_buf, "poptGetContext returned NULL\n", sizeof err_buf);
return 0;
}
if (!am_server) {
poptReadDefaultConfig(pc, 0);
popt_unalias(pc, "--daemon");
@@ -2022,8 +2006,6 @@ int parse_arguments(int *argc_p, const char ***argv_p)
create_refuse_error(refused_compress);
goto cleanup;
}
if (do_compression_threads < 0)
do_compression_threads = 0;
}
#ifdef HAVE_SETVBUF

174
packaging/branch-from-patch Executable file
View File

@@ -0,0 +1,174 @@
#!/usr/bin/env -S python3 -B
# This script turns one or more diff files in the patches dir (which is
# expected to be a checkout of the rsync-patches git repo) into a branch
# in the main rsync git checkout. This allows the applied patch to be
# merged with the latest rsync changes and tested. To update the diff
# with the resulting changes, see the patch-update script.
import os, sys, re, argparse, glob
sys.path = ['packaging'] + sys.path
from pkglib import *
def main():
global created, info, local_branch
cur_branch, args.base_branch = check_git_state(args.base_branch, not args.skip_check, args.patches_dir)
local_branch = get_patch_branches(args.base_branch)
if args.delete_local_branches:
for name in sorted(local_branch):
branch = f"patch/{args.base_branch}/{name}"
cmd_chk(['git', 'branch', '-D', branch])
local_branch = set()
if args.add_missing:
for fn in sorted(glob.glob(f"{args.patches_dir}/*.diff")):
name = re.sub(r'\.diff$', '', re.sub(r'.+/', '', fn))
if name not in local_branch and fn not in args.patch_files:
args.patch_files.append(fn)
if not args.patch_files:
return
for fn in args.patch_files:
if not fn.endswith('.diff'):
die(f"Filename is not a .diff file: {fn}")
if not os.path.isfile(fn):
die(f"File not found: {fn}")
scanned = set()
info = { }
patch_list = [ ]
for fn in args.patch_files:
m = re.match(r'^(?P<dir>.*?)(?P<name>[^/]+)\.diff$', fn)
patch = argparse.Namespace(**m.groupdict())
if patch.name in scanned:
continue
patch.fn = fn
lines = [ ]
commit_hash = None
with open(patch.fn, 'r', encoding='utf-8') as fh:
for line in fh:
m = re.match(r'^based-on: (\S+)', line)
if m:
commit_hash = m[1]
break
if (re.match(r'^index .*\.\..* \d', line)
or re.match(r'^diff --git ', line)
or re.match(r'^--- (old|a)/', line)):
break
lines.append(re.sub(r'\s*\Z', "\n", line, 1))
info_txt = ''.join(lines).strip() + "\n"
lines = None
parent = args.base_branch
patches = re.findall(r'patch -p1 <%s/(\S+)\.diff' % args.patches_dir, info_txt)
if patches:
last = patches.pop()
if last != patch.name:
warn(f"No identity patch line in {patch.fn}")
patches.append(last)
if patches:
parent = patches.pop()
if parent not in scanned:
diff_fn = patch.dir + parent + '.diff'
if not os.path.isfile(diff_fn):
die(f"Failed to find parent of {patch.fn}: {parent}")
# Add parent to args.patch_files so that we will look for the
# parent's parent. Any duplicates will be ignored.
args.patch_files.append(diff_fn)
else:
warn(f"No patch lines found in {patch.fn}")
info[patch.name] = [ parent, info_txt, commit_hash ]
patch_list.append(patch)
created = set()
for patch in patch_list:
create_branch(patch)
cmd_chk(['git', 'checkout', args.base_branch])
def create_branch(patch):
if patch.name in created:
return
created.add(patch.name)
parent, info_txt, commit_hash = info[patch.name]
parent = argparse.Namespace(dir=patch.dir, name=parent, fn=patch.dir + parent + '.diff')
if parent.name == args.base_branch:
parent_branch = commit_hash if commit_hash else args.base_branch
else:
create_branch(parent)
parent_branch = '/'.join(['patch', args.base_branch, parent.name])
branch = '/'.join(['patch', args.base_branch, patch.name])
print("\n" + '=' * 64)
print(f"Processing {branch} ({parent_branch})")
if patch.name in local_branch:
cmd_chk(['git', 'branch', '-D', branch])
cmd_chk(['git', 'checkout', '-b', branch, parent_branch])
info_fn = 'PATCH.' + patch.name
with open(info_fn, 'w', encoding='utf-8') as fh:
fh.write(info_txt)
cmd_chk(['git', 'add', info_fn])
with open(patch.fn, 'r', encoding='utf-8') as fh:
patch_txt = fh.read()
cmd_run('patch -p1'.split(), input=patch_txt)
for fn in glob.glob('*.orig') + glob.glob('*/*.orig'):
os.unlink(fn)
pos = 0
new_file_re = re.compile(r'\nnew file mode (?P<mode>\d+)\s+--- /dev/null\s+\+\+\+ b/(?P<fn>.+)')
while True:
m = new_file_re.search(patch_txt, pos)
if not m:
break
os.chmod(m['fn'], int(m['mode'], 8))
cmd_chk(['git', 'add', m['fn']])
pos = m.end()
while True:
cmd_chk('git status'.split())
ans = input('Press Enter to commit, Ctrl-C to abort, or type a wild-name to add a new file: ')
if ans == '':
break
cmd_chk("git add " + ans, shell=True)
while True:
s = cmd_run(['git', 'commit', '-a', '-m', f"Creating branch from {patch.name}.diff."])
if not s.returncode:
break
s = cmd_run([os.environ.get('SHELL', '/bin/sh')])
if s.returncode:
die('Aborting due to shell error code')
if __name__ == '__main__':
parser = argparse.ArgumentParser(description="Create a git patch branch from an rsync patch file.", add_help=False)
parser.add_argument('--branch', '-b', dest='base_branch', metavar='BASE_BRANCH', default='master', help="The branch the patch is based on. Default: master.")
parser.add_argument('--add-missing', '-a', action='store_true', help="Add a branch for every patches/*.diff that doesn't have a branch.")
parser.add_argument('--skip-check', action='store_true', help="Skip the check that ensures starting with a clean branch.")
parser.add_argument('--delete', dest='delete_local_branches', action='store_true', help="Delete all the local patch/BASE/* branches, not just the ones that are being recreated.")
parser.add_argument('--patches-dir', '-p', metavar='DIR', default='patches', help="Override the location of the rsync-patches dir. Default: patches.")
parser.add_argument('patch_files', metavar='patches/DIFF_FILE', nargs='*', help="Specify what patch diff files to process. Default: all of them.")
parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
args = parser.parse_args()
main()
# vim: sw=4 et ft=python

View File

@@ -1,2 +0,0 @@
- /generated-files/
- /binaries/

View File

@@ -1,6 +1,6 @@
Summary: A fast, versatile, remote (and local) file-copying tool
Name: rsync
Version: 3.4.3
Version: 3.4.0
%define fullversion %{version}
Release: 1
%define srcdir src
@@ -79,5 +79,5 @@ rm -rf $RPM_BUILD_ROOT
%dir /etc/rsync-ssl/certs
%changelog
* Wed May 20 2026 Rsync Project <rsync.project@gmail.com>
Released 3.4.3.
* Wed Jan 15 2025 Rsync Project <rsync.project@gmail.com>
Released 3.4.0.

244
packaging/patch-update Executable file
View File

@@ -0,0 +1,244 @@
#!/usr/bin/env -S python3 -B
# This script is used to turn one or more of the "patch/BASE/*" branches
# into one or more diffs in the "patches" directory. Pass the option
# --gen if you want generated files in the diffs. Pass the name of
# one or more diffs if you want to just update a subset of all the
# diffs.
import os, sys, re, argparse, time, shutil
sys.path = ['packaging'] + sys.path
from pkglib import *
MAKE_GEN_CMDS = [
'./prepare-source'.split(),
'cd build && if test -f config.status ; then ./config.status ; else ../configure ; fi',
'make -C build gen'.split(),
]
TMP_DIR = "patches.gen"
os.environ['GIT_MERGE_AUTOEDIT'] = 'no'
def main():
global master_commit, parent_patch, description, completed, last_touch
if not os.path.isdir(args.patches_dir):
die(f'No "{args.patches_dir}" directory was found.')
if not os.path.isdir('.git'):
die('No ".git" directory present in the current dir.')
starting_branch, args.base_branch = check_git_state(args.base_branch, not args.skip_check, args.patches_dir)
master_commit = latest_git_hash(args.base_branch)
if cmd_txt_chk(['packaging/prep-auto-dir']).out == '':
die('You must setup an auto-build-save dir to use this script.')
if args.gen:
if os.path.lexists(TMP_DIR):
die(f'"{TMP_DIR}" must not exist in the current directory.')
gen_files = get_gen_files()
os.mkdir(TMP_DIR, 0o700)
for cmd in MAKE_GEN_CMDS:
cmd_chk(cmd)
cmd_chk(['rsync', '-a', *gen_files, f'{TMP_DIR}/master/'])
last_touch = int(time.time())
# Start by finding all patches so that we can load all possible parents.
patches = sorted(list(get_patch_branches(args.base_branch)))
parent_patch = { }
description = { }
for patch in patches:
branch = f"patch/{args.base_branch}/{patch}"
desc = ''
proc = cmd_pipe(['git', 'diff', '-U1000', f"{args.base_branch}...{branch}", '--', f"PATCH.{patch}"])
in_diff = False
for line in proc.stdout:
if in_diff:
if not re.match(r'^[ +]', line):
continue
line = line[1:]
m = re.search(r'patch -p1 <patches/(\S+)\.diff', line)
if m and m[1] != patch:
parpat = parent_patch[patch] = m[1]
if not parpat in patches:
die(f"Parent of {patch} is not a local branch: {parpat}")
desc += line
elif re.match(r'^@@ ', line):
in_diff = True
description[patch] = desc
proc.communicate()
if args.patch_files: # Limit the list of patches to actually process
valid_patches = patches
patches = [ ]
for fn in args.patch_files:
name = re.sub(r'\.diff$', '', re.sub(r'.+/', '', fn))
if name not in valid_patches:
die(f"Local branch not available for patch: {name}")
patches.append(name)
completed = set()
for patch in patches:
if patch in completed:
continue
if not update_patch(patch):
break
if args.gen:
shutil.rmtree(TMP_DIR)
while last_touch >= int(time.time()):
time.sleep(1)
cmd_chk(['git', 'checkout', starting_branch])
cmd_chk(['packaging/prep-auto-dir'], discard='output')
def update_patch(patch):
global last_touch
completed.add(patch) # Mark it as completed early to short-circuit any (bogus) dependency loops.
parent = parent_patch.get(patch, None)
if parent:
if parent not in completed:
if not update_patch(parent):
return 0
based_on = parent = f"patch/{args.base_branch}/{parent}"
else:
parent = args.base_branch
based_on = master_commit
print(f"======== {patch} ========")
while args.gen and last_touch >= int(time.time()):
time.sleep(1)
branch = f"patch/{args.base_branch}/{patch}"
s = cmd_run(['git', 'checkout', branch])
if s.returncode != 0:
return 0
s = cmd_run(['git', 'merge', based_on])
ok = s.returncode == 0
skip_shell = False
if not ok or args.cmd or args.make or args.shell:
cmd_chk(['packaging/prep-auto-dir'], discard='output')
if not ok:
print(f'"git merge {based_on}" incomplete -- please fix.')
if not run_a_shell(parent, patch):
return 0
if not args.make and not args.cmd:
skip_shell = True
if args.make:
if cmd_run(['packaging/smart-make']).returncode != 0:
if not run_a_shell(parent, patch):
return 0
if not args.cmd:
skip_shell = True
if args.cmd:
if cmd_run(args.cmd).returncode != 0:
if not run_a_shell(parent, patch):
return 0
skip_shell = True
if args.shell and not skip_shell:
if not run_a_shell(parent, patch):
return 0
with open(f"{args.patches_dir}/{patch}.diff", 'w', encoding='utf-8') as fh:
fh.write(description[patch])
fh.write(f"\nbased-on: {based_on}\n")
if args.gen:
gen_files = get_gen_files()
for cmd in MAKE_GEN_CMDS:
cmd_chk(cmd)
cmd_chk(['rsync', '-a', *gen_files, f"{TMP_DIR}/{patch}/"])
else:
gen_files = [ ]
last_touch = int(time.time())
proc = cmd_pipe(['git', 'diff', based_on])
skipping = False
for line in proc.stdout:
if skipping:
if not re.match(r'^diff --git a/', line):
continue
skipping = False
elif re.match(r'^diff --git a/PATCH', line):
skipping = True
continue
if not re.match(r'^index ', line):
fh.write(line)
proc.communicate()
if args.gen:
e_tmp_dir = re.escape(TMP_DIR)
diff_re = re.compile(r'^(diff -Nurp) %s/[^/]+/(.*?) %s/[^/]+/(.*)' % (e_tmp_dir, e_tmp_dir))
minus_re = re.compile(r'^\-\-\- %s/[^/]+/([^\t]+)\t.*' % e_tmp_dir)
plus_re = re.compile(r'^\+\+\+ %s/[^/]+/([^\t]+)\t.*' % e_tmp_dir)
if parent == args.base_branch:
parent_dir = 'master'
else:
m = re.search(r'([^/]+)$', parent)
parent_dir = m[1]
proc = cmd_pipe(['diff', '-Nurp', f"{TMP_DIR}/{parent_dir}", f"{TMP_DIR}/{patch}"])
for line in proc.stdout:
line = diff_re.sub(r'\1 a/\2 b/\3', line)
line = minus_re.sub(r'--- a/\1', line)
line = plus_re.sub(r'+++ b/\1', line)
fh.write(line)
proc.communicate()
return 1
def run_a_shell(parent, patch):
m = re.search(r'([^/]+)$', parent)
parent_dir = m[1]
os.environ['PS1'] = f"[{parent_dir}] {patch}: "
while True:
s = cmd_run([os.environ.get('SHELL', '/bin/sh')])
if s.returncode != 0:
ans = input("Abort? [n/y] ")
if re.match(r'^y', ans, flags=re.I):
return False
continue
cur_branch, is_clean, status_txt = check_git_status(0)
if is_clean:
break
print(status_txt, end='')
cmd_run('rm -f build/*.o build/*/*.o')
return True
if __name__ == '__main__':
parser = argparse.ArgumentParser(description="Turn a git branch back into a diff files in the patches dir.", add_help=False)
parser.add_argument('--branch', '-b', dest='base_branch', metavar='BASE_BRANCH', default='master', help="The branch the patch is based on. Default: master.")
parser.add_argument('--skip-check', action='store_true', help="Skip the check that ensures starting with a clean branch.")
parser.add_argument('--make', '-m', action='store_true', help="Run the smart-make script in every patch branch.")
parser.add_argument('--cmd', '-c', help="Run a command in every patch branch.")
parser.add_argument('--shell', '-s', action='store_true', help="Launch a shell for every patch/BASE/* branch updated, not just when a conflict occurs.")
parser.add_argument('--gen', metavar='DIR', nargs='?', const='', help='Include generated files. Optional DIR value overrides the default of using the "patches" dir.')
parser.add_argument('--patches-dir', '-p', metavar='DIR', default='patches', help="Override the location of the rsync-patches dir. Default: patches.")
parser.add_argument('patch_files', metavar='patches/DIFF_FILE', nargs='*', help="Specify what patch diff files to process. Default: all of them.")
parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
args = parser.parse_args()
if args.gen == '':
args.gen = args.patches_dir
elif args.gen is not None:
args.patches_dir = args.gen
main()
# vim: sw=4 et ft=python

414
packaging/release-rsync Executable file
View File

@@ -0,0 +1,414 @@
#!/usr/bin/env -S python3 -B
# This script expects the directory ~/samba-rsync-ftp to exist and to be a
# copy of the /home/ftp/pub/rsync dir on samba.org. When the script is done,
# the git repository in the current directory will be updated, and the local
# ~/samba-rsync-ftp dir will be ready to be rsynced to samba.org. See the
# script samba-rsync for an easy way to initialize the local ftp copy and to
# thereafter update the remote files from your local copy.
# This script also expects to be able to gpg sign the resulting tar files
# using your default gpg key. Make sure that the html download.html file
# has a link to the relevant keys that are authorized to sign the tar files
# and also make sure that the following commands work as expected:
#
# touch TeMp
# gpg --sign TeMp
# gpg --verify TeMp.gpg
# gpg --sign TeMp
# rm TeMp*
#
# The second time you sign the file it should NOT prompt you for your password
# (unless the timeout period has passed). It will prompt about overriding the
# existing TeMp.gpg file, though.
import os, sys, re, argparse, glob, shutil, signal
from datetime import datetime
from getpass import getpass
sys.path = ['packaging'] + sys.path
from pkglib import *
os.environ['LESS'] = 'mqeiXR'; # Make sure that -F is turned off and -R is turned on.
dest = os.environ['HOME'] + '/samba-rsync-ftp'
ORIGINAL_PATH = os.environ['PATH']
def main():
if not os.path.isfile('packaging/release-rsync'):
die('You must run this script from the top of your rsync checkout.')
now = datetime.now()
cl_today = now.strftime('* %a %b %d %Y')
year = now.strftime('%Y')
ztoday = now.strftime('%d %b %Y')
today = ztoday.lstrip('0')
curdir = os.getcwd()
signal.signal(signal.SIGINT, signal_handler)
if cmd_txt_chk(['packaging/prep-auto-dir']).out == '':
die('You must setup an auto-build-save dir to use this script.');
auto_dir, gen_files = get_gen_files(True)
gen_pathnames = [ os.path.join(auto_dir, fn) for fn in gen_files ]
dash_line = '=' * 74
print(f"""\
{dash_line}
== This will release a new version of rsync onto an unsuspecting world. ==
{dash_line}
""")
with open('build/rsync.1') as fh:
for line in fh:
if line.startswith(r'.\" prefix='):
doc_prefix = line.split('=')[1].strip()
if doc_prefix != '/usr':
warn(f"*** The documentation was built with prefix {doc_prefix} instead of /usr ***")
die("*** Read the md2man script for a way to override this. ***")
break
if line.startswith('.P'):
die("Failed to find the prefix comment at the start of the rsync.1 manpage.")
if not os.path.isdir(dest):
die(dest, "dest does not exist")
if not os.path.isdir('.git'):
die("There is no .git dir in the current directory.")
if os.path.lexists('a'):
die('"a" must not exist in the current directory.')
if os.path.lexists('b'):
die('"b" must not exist in the current directory.')
if os.path.lexists('patches.gen'):
die('"patches.gen" must not exist in the current directory.')
check_git_state(args.master_branch, True, 'patches')
curversion = get_rsync_version()
# All version values are strings!
lastversion, last_protocol_version, pdate = get_NEWS_version_info()
protocol_version, subprotocol_version = get_protocol_versions()
version = curversion
m = re.search(r'pre(\d+)', version)
if m:
version = re.sub(r'pre\d+', 'pre' + str(int(m[1]) + 1), version)
else:
version = version.replace('dev', 'pre1')
ans = input(f"Please enter the version number of this release: [{version}] ")
if ans == '.':
version = re.sub(r'pre\d+', '', version)
elif ans != '':
version = ans
if not re.match(r'^[\d.]+(pre\d+)?$', version):
die(f'Invalid version: "{version}"')
v_ver = 'v' + version
rsync_ver = 'rsync-' + version
if os.path.lexists(rsync_ver):
die(f'"{rsync_ver}" must not exist in the current directory.')
out = cmd_txt_chk(['git', 'tag', '-l', v_ver]).out
if out != '':
print(f"Tag {v_ver} already exists.")
ans = input("\nDelete tag or quit? [Q/del] ")
if not re.match(r'^del', ans, flags=re.I):
die("Aborted")
cmd_chk(['git', 'tag', '-d', v_ver])
if os.path.isdir('patches/.git'):
cmd_chk(f"cd patches && git tag -d '{v_ver}'")
version = re.sub(r'[-.]*pre[-.]*', 'pre', version)
if 'pre' in version and not curversion.endswith('dev'):
lastversion = curversion
ans = input(f"Enter the previous version to produce a patch against: [{lastversion}] ")
if ans != '':
lastversion = ans
lastversion = re.sub(r'[-.]*pre[-.]*', 'pre', lastversion)
rsync_lastver = 'rsync-' + lastversion
if os.path.lexists(rsync_lastver):
die(f'"{rsync_lastver}" must not exist in the current directory.')
m = re.search(r'(pre\d+)', version)
pre = m[1] if m else ''
release = '0.1' if pre else '1'
ans = input(f"Please enter the RPM release number of this release: [{release}] ")
if ans != '':
release = ans
if pre:
release += '.' + pre
finalversion = re.sub(r'pre\d+', '', version)
proto_changed = protocol_version != last_protocol_version
if proto_changed:
if finalversion in pdate:
proto_change_date = pdate[finalversion]
else:
while True:
ans = input("On what date did the protocol change to {protocol_version} get checked in? (dd Mmm yyyy) ")
if re.match(r'^\d\d \w\w\w \d\d\d\d$', ans):
break
proto_change_date = ans
else:
proto_change_date = ' ' * 11
if 'pre' in lastversion:
if not pre:
die("You should not diff a release version against a pre-release version.")
srcdir = srcdiffdir = lastsrcdir = 'src-previews'
skipping = ' ** SKIPPING **'
elif pre:
srcdir = srcdiffdir = 'src-previews'
lastsrcdir = 'src'
skipping = ' ** SKIPPING **'
else:
srcdir = lastsrcdir = 'src'
srcdiffdir = 'src-diffs'
skipping = ''
print(f"""
{dash_line}
version is "{version}"
lastversion is "{lastversion}"
dest is "{dest}"
curdir is "{curdir}"
srcdir is "{srcdir}"
srcdiffdir is "{srcdiffdir}"
lastsrcdir is "{lastsrcdir}"
release is "{release}"
About to:
- tweak SUBPROTOCOL_VERSION in rsync.h, if needed
- tweak the version in version.h and the spec files
- tweak NEWS.md to ensure header values are correct
- generate configure.sh, config.h.in, and proto.h
- page through the differences
""")
ans = input("<Press Enter to continue> ")
specvars = {
'Version:': finalversion,
'Release:': release,
'%define fullversion': f'%{{version}}{pre}',
'Released': version + '.',
'%define srcdir': srcdir,
}
tweak_files = 'version.h rsync.h'.split()
tweak_files += glob.glob('packaging/*.spec')
tweak_files += glob.glob('packaging/*/*.spec')
for fn in tweak_files:
with open(fn, 'r', encoding='utf-8') as fh:
old_txt = txt = fh.read()
if fn == 'version.h':
x_re = re.compile(r'^(#define RSYNC_VERSION).*', re.M)
msg = f"Unable to update RSYNC_VERSION in {fn}"
txt = replace_or_die(x_re, r'\1 "%s"' % version, txt, msg)
elif '.spec' in fn:
for var, val in specvars.items():
x_re = re.compile(r'^%s .*' % re.escape(var), re.M)
txt = replace_or_die(x_re, var + ' ' + val, txt, f"Unable to update {var} in {fn}")
x_re = re.compile(r'^\* \w\w\w \w\w\w \d\d \d\d\d\d (.*)', re.M)
txt = replace_or_die(x_re, r'%s \1' % cl_today, txt, f"Unable to update ChangeLog header in {fn}")
elif fn == 'rsync.h':
x_re = re.compile('(#define\s+SUBPROTOCOL_VERSION)\s+(\d+)')
repl = lambda m: m[1] + ' ' + ('0' if not pre or not proto_changed else '1' if m[2] == '0' else m[2])
txt = replace_or_die(x_re, repl, txt, f"Unable to find SUBPROTOCOL_VERSION define in {fn}")
elif fn == 'NEWS.md':
efv = re.escape(finalversion)
x_re = re.compile(r'^# NEWS for rsync %s \(UNRELEASED\)\s+## Changes in this version:\n' % efv
+ r'(\n### PROTOCOL NUMBER:\s+- The protocol number was changed to \d+\.\n)?')
rel_day = 'UNRELEASED' if pre else today
repl = (f'# NEWS for rsync {finalversion} ({rel_day})\n\n'
+ '## Changes in this version:\n')
if proto_changed:
repl += f'\n### PROTOCOL NUMBER:\n\n - The protocol number was changed to {protocol_version}.\n'
good_top = re.sub(r'\(.*?\)', '(UNRELEASED)', repl, 1)
msg = f"The top lines of {fn} are not in the right format. It should be:\n" + good_top
txt = replace_or_die(x_re, repl, txt, msg)
x_re = re.compile(r'^(\| )(\S{2} \S{3} \d{4})(\s+\|\s+%s\s+\| ).{11}(\s+\| )\S{2}(\s+\|+)$' % efv, re.M)
repl = lambda m: m[1] + (m[2] if pre else ztoday) + m[3] + proto_change_date + m[4] + protocol_version + m[5]
txt = replace_or_die(x_re, repl, txt, f'Unable to find "| ?? ??? {year} | {finalversion} | ... |" line in {fn}')
else:
die(f"Unrecognized file in tweak_files: {fn}")
if txt != old_txt:
print(f"Updating {fn}")
with open(fn, 'w', encoding='utf-8') as fh:
fh.write(txt)
cmd_chk(['packaging/year-tweak'])
print(dash_line)
cmd_run("git diff".split())
srctar_name = f"{rsync_ver}.tar.gz"
pattar_name = f"rsync-patches-{version}.tar.gz"
diff_name = f"{rsync_lastver}-{version}.diffs.gz"
srctar_file = os.path.join(dest, srcdir, srctar_name)
pattar_file = os.path.join(dest, srcdir, pattar_name)
diff_file = os.path.join(dest, srcdiffdir, diff_name)
lasttar_file = os.path.join(dest, lastsrcdir, rsync_lastver + '.tar.gz')
print(f"""\
{dash_line}
About to:
- git commit all changes
- run a full build, ensuring that the manpages & configure.sh are up-to-date
- merge the {args.master_branch} branch into the patch/{args.master_branch}/* branches
- update the files in the "patches" dir and OPTIONALLY (if you type 'y') to
run patch-update with the --make option (which opens a shell on error)
""")
ans = input("<Press Enter OR 'y' to continue> ")
s = cmd_run(['git', 'commit', '-a', '-m', f'Preparing for release of {version} [buildall]'])
if s.returncode:
die('Aborting')
cmd_chk('touch configure.ac && packaging/smart-make && make gen')
print('Creating any missing patch branches.')
s = cmd_run(f'packaging/branch-from-patch --branch={args.master_branch} --add-missing')
if s.returncode:
die('Aborting')
print('Updating files in "patches" dir ...')
s = cmd_run(f'packaging/patch-update --branch={args.master_branch}')
if s.returncode:
die('Aborting')
if re.match(r'^y', ans, re.I):
print(f'\nRunning smart-make on all "patch/{args.master_branch}/*" branches ...')
cmd_run(f"packaging/patch-update --branch={args.master_branch} --skip-check --make")
if os.path.isdir('patches/.git'):
s = cmd_run(f"cd patches && git commit -a -m 'The patches for {version}.'")
if s.returncode:
die('Aborting')
print(f"""\
{dash_line}
About to:
- create signed tag for this release: {v_ver}
- create release diffs, "{diff_name}"
- create release tar, "{srctar_name}"
- generate {rsync_ver}/patches/* files
- create patches tar, "{pattar_name}"
- update top-level README.md, NEWS.md, TODO, and ChangeLog
- update top-level rsync*.html manpages
- gpg-sign the release files
- update hard-linked top-level release files{skipping}
""")
ans = input("<Press Enter to continue> ")
# TODO: is there a better way to ensure that our passphrase is in the agent?
cmd_run("touch TeMp; gpg --sign TeMp; rm TeMp*")
out = cmd_txt(f"git tag -s -m 'Version {version}.' {v_ver}", capture='combined').out
print(out, end='')
if 'bad passphrase' in out or 'failed' in out:
die('Aborting')
if os.path.isdir('patches/.git'):
out = cmd_txt(f"cd patches && git tag -s -m 'Version {version}.' {v_ver}", capture='combined').out
print(out, end='')
if 'bad passphrase' in out or 'failed' in out:
die('Aborting')
os.environ['PATH'] = ORIGINAL_PATH
# Extract the generated files from the old tar.
tweaked_gen_files = [ os.path.join(rsync_lastver, fn) for fn in gen_files ]
cmd_run(['tar', 'xzf', lasttar_file, *tweaked_gen_files])
os.rename(rsync_lastver, 'a')
print(f"Creating {diff_file} ...")
cmd_chk(['rsync', '-a', *gen_pathnames, 'b/'])
sed_script = r's:^((---|\+\+\+) [ab]/[^\t]+)\t.*:\1:' # CAUTION: must not contain any single quotes!
cmd_chk(f"(git diff v{lastversion} {v_ver} -- ':!.github'; diff -upN a b | sed -r '{sed_script}') | gzip -9 >{diff_file}")
shutil.rmtree('a')
os.rename('b', rsync_ver)
print(f"Creating {srctar_file} ...")
cmd_chk(f"git archive --format=tar --prefix={rsync_ver}/ {v_ver} | tar xf -")
cmd_chk(f"support/git-set-file-times --quiet --prefix={rsync_ver}/")
cmd_chk(['fakeroot', 'tar', 'czf', srctar_file, '--exclude=.github', rsync_ver])
shutil.rmtree(rsync_ver)
print(f'Updating files in "{rsync_ver}/patches" dir ...')
os.mkdir(rsync_ver, 0o755)
os.mkdir(f"{rsync_ver}/patches", 0o755)
cmd_chk(f"packaging/patch-update --skip-check --branch={args.master_branch} --gen={rsync_ver}/patches".split())
print(f"Creating {pattar_file} ...")
cmd_chk(['fakeroot', 'tar', 'chzf', pattar_file, rsync_ver + '/patches'])
shutil.rmtree(rsync_ver)
print(f"Updating the other files in {dest} ...")
md_files = 'README.md NEWS.md INSTALL.md'.split()
html_files = [ fn for fn in gen_pathnames if fn.endswith('.html') ]
cmd_chk(['rsync', '-a', *md_files, *html_files, dest])
cmd_chk(["./md-convert", "--dest", dest, *md_files])
cmd_chk(f"git log --name-status | gzip -9 >{dest}/ChangeLog.gz")
for fn in (srctar_file, pattar_file, diff_file):
asc_fn = fn + '.asc'
if os.path.lexists(asc_fn):
os.unlink(asc_fn)
res = cmd_run(['gpg', '--batch', '-ba', fn])
if res.returncode != 0 and res.returncode != 2:
die("gpg signing failed")
if not pre:
for find in f'{dest}/rsync-*.gz {dest}/rsync-*.asc {dest}/src-previews/rsync-*diffs.gz*'.split():
for fn in glob.glob(find):
os.unlink(fn)
top_link = [
srctar_file, f"{srctar_file}.asc",
pattar_file, f"{pattar_file}.asc",
diff_file, f"{diff_file}.asc",
]
for fn in top_link:
os.link(fn, re.sub(r'/src(-\w+)?/', '/', fn))
print(f"""\
{dash_line}
Local changes are done. When you're satisfied, push the git repository
and rsync the release files. Remember to announce the release on *BOTH*
rsync-announce@lists.samba.org and rsync@lists.samba.org (and the web)!
""")
def replace_or_die(regex, repl, txt, die_msg):
m = regex.search(txt)
if not m:
die(die_msg)
return regex.sub(repl, txt, 1)
def signal_handler(sig, frame):
die("\nAborting due to SIGINT.")
if __name__ == '__main__':
parser = argparse.ArgumentParser(description="Prepare a new release of rsync in the git repo & ftp dir.", add_help=False)
parser.add_argument('--branch', '-b', dest='master_branch', default='master', help="The branch to release. Default: master.")
parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
args = parser.parse_args()
main()
# vim: sw=4 et ft=python

View File

@@ -1,705 +0,0 @@
#!/usr/bin/env python3
# Step-based release script for rsync. Each step is a separate invocation
# selected by a --step-N-XX option, so the maintainer drives the release
# manually one piece at a time.
#
# All persistent state and working files live in ../release/ (a sibling of
# the rsync git checkout):
#
# ../release/rsync-ftp/ mirror of samba.org:/home/ftp/pub/rsync
# ../release/rsync-html/ release-time snapshot of the html site
# ../release/work/ scratch space for tarball / diff staging
# ../release/release-state.json info shared between steps
#
# The rsync-patches archive is no longer maintained and has been dropped.
#
# Run "packaging/release.py --list" to see the step list.
import os, sys, re, argparse, glob, shutil, json, signal, subprocess
from datetime import datetime
sys.path = ['packaging'] + sys.path
from pkglib import (
warn, die, cmd_run, cmd_chk, cmd_txt, cmd_txt_chk, cmd_pipe,
check_git_state, get_rsync_version,
get_NEWS_version_info, get_protocol_versions,
)
# ---------- Paths ----------
RELEASE_DIR = os.path.realpath('../release')
FTP_DIR = os.path.join(RELEASE_DIR, 'rsync-ftp')
HTML_DIR = os.path.join(RELEASE_DIR, 'rsync-html')
WORK_DIR = os.path.join(RELEASE_DIR, 'work')
STATE_FILE = os.path.join(RELEASE_DIR, 'release-state.json')
# The rsync-web/ subdirectory in the rsync source tree is the source-of-truth
# for the git-tracked html content. step-1-fetch snapshots it into HTML_DIR
# for the release flow, where it can be edited or augmented with server-side
# content before step-11-push-html sends it to samba.org.
HTML_SRC = os.path.realpath('rsync-web')
FTP_REMOTE_PATH = '/home/ftp/pub/rsync'
HTML_REMOTE_PATH = '/home/httpd/html/rsync'
# Files that ./configure + make produce and that the release tarball / diff
# need to bundle alongside the git-tracked source. Mirrors the GENFILES
# definition in Makefile.in (with rrsync.1{,.html} since we always configure
# --with-rrsync in --step-4-build).
GEN_FILES = [
'configure.sh',
'aclocal.m4',
'config.h.in',
'rsync.1', 'rsync.1.html',
'rsync-ssl.1', 'rsync-ssl.1.html',
'rsyncd.conf.5', 'rsyncd.conf.5.html',
'rrsync.1', 'rrsync.1.html',
]
# ---------- Step registry ----------
STEPS = [
('step-1-fetch', 'mirror ../release/rsync-ftp from samba.org and snapshot ../release/rsync-html from rsync-web/'),
('step-2-prepare', 'gather release info interactively and write release-state.json'),
('step-3-tweak', 'update version.h, rsync.h, NEWS.md, and packaging/*.spec'),
('step-4-build', 'run smart-make + make gen'),
('step-5-commit', 'git commit -a (commit the prepared release changes)'),
('step-6-tag', 'create the gpg-signed git tag'),
('step-7-tarball', 'build the source tarball and diffs.gz against the previous release'),
('step-8-update-ftp', 'refresh README/NEWS/INSTALL/html in the ftp dir, regen ChangeLog.gz, gpg-sign tarballs'),
('step-9-toplinks', 'hard-link top-level release files (final releases only)'),
('step-10-push-ftp', 'rsync ../release/rsync-ftp/ to samba.org'),
('step-11-push-html', 'rsync ../release/rsync-html/ to samba.org (after any manual edits)'),
('step-12-push-git', 'print the git push commands for you to run'),
]
STEP_FLAGS = [s[0] for s in STEPS]
DASH_LINE = '=' * 74
# ---------- State helpers ----------
def load_state():
if not os.path.isfile(STATE_FILE):
die(f"{STATE_FILE} not found. Run --step-2-prepare first.")
with open(STATE_FILE, 'r', encoding='utf-8') as fh:
return json.load(fh)
def save_state(state):
os.makedirs(RELEASE_DIR, exist_ok=True)
with open(STATE_FILE, 'w', encoding='utf-8') as fh:
json.dump(state, fh, indent=2, sort_keys=True)
fh.write('\n')
def require_samba_host():
host = os.environ.get('RSYNC_SAMBA_HOST', '')
if not host.endswith('.samba.org'):
die("Set RSYNC_SAMBA_HOST in your environment to the samba hostname (e.g. hr3.samba.org).")
return host
def require_top_of_checkout():
if not os.path.isfile('packaging/release.py'):
die("Run this script from the top of your rsync checkout.")
if not os.path.isdir('.git'):
die("There is no .git dir in the current directory.")
def replace_or_die(regex, repl, txt, die_msg):
m = regex.search(txt)
if not m:
die(die_msg)
return regex.sub(repl, txt, 1)
def section(title):
print(f"\n{DASH_LINE}\n== {title}\n{DASH_LINE}")
def confirm(prompt, default_no=True):
suffix = '[n] ' if default_no else '[y] '
ans = input(f"{prompt} {suffix}").strip().lower()
if default_no:
return ans.startswith('y')
return ans == '' or ans.startswith('y')
# ---------- Step 1: fetch ftp + html ----------
def step_1_fetch(args):
host = require_samba_host()
os.makedirs(RELEASE_DIR, exist_ok=True)
os.makedirs(WORK_DIR, exist_ok=True)
section(f"Fetching ftp dir into {FTP_DIR}")
if not os.path.isdir(FTP_DIR):
os.makedirs(FTP_DIR)
# packaging/ftp.filt is the authoritative copy of the .filt filter file
# that controls which subtrees rsync excludes from the FTP mirror.
# Seed FTP_DIR/.filt from it so the bundled version is what step-1's
# rsync uses here, and so step-10-push-ftp propagates it back to the
# server. --exclude=/.filt below stops the server's copy from
# overwriting our bundled one on the way down.
filt = os.path.join(FTP_DIR, '.filt')
bundled_filt = os.path.realpath('packaging/ftp.filt')
if not os.path.isfile(bundled_filt):
die(f"{bundled_filt} not found; cannot seed .filt for the FTP pull.")
shutil.copyfile(bundled_filt, filt)
cmd_chk(['rsync', '-aivOHP', f'-f:_{filt}', '--exclude=/.filt',
f'{host}:{FTP_REMOTE_PATH}/', f'{FTP_DIR}/'])
section(f"Snapshotting html dir from {HTML_SRC} into {HTML_DIR}")
if not os.path.isdir(HTML_SRC):
die(f"{HTML_SRC} not found. This should be the in-tree rsync-web/ "
f"subdirectory; something is wrong with your checkout.")
os.makedirs(HTML_DIR, exist_ok=True)
cmd_chk(['rsync', '-aiv', f'{HTML_SRC}/', f'{HTML_DIR}/'])
# Then mirror non-git html content from the server, skipping files that
# the html git already provides (driven by the 'filt' file in HTML_DIR).
filt = os.path.join(HTML_DIR, 'filt')
if os.path.exists(filt):
tmp_filt = os.path.join(HTML_DIR, 'tmp-filt')
cmd_chk(f"sed -n -e 's/[-P]/H/p' '{filt}' >'{tmp_filt}'")
cmd_chk(['rsync', '-aivOHP', f'-f._{tmp_filt}',
f'{host}:{HTML_REMOTE_PATH}/', f'{HTML_DIR}/'])
os.unlink(tmp_filt)
print(f"\nFetch complete. Local dirs are now in {RELEASE_DIR}.")
# ---------- Step 2: prepare ----------
def step_2_prepare(args):
require_top_of_checkout()
os.makedirs(RELEASE_DIR, exist_ok=True)
if not os.path.isdir(FTP_DIR):
die(f"{FTP_DIR} does not exist. Run --step-1-fetch first.")
now = datetime.now().astimezone()
cl_today = now.strftime('* %a %b %d %Y')
year = now.strftime('%Y')
ztoday = now.strftime('%d %b %Y')
today = ztoday.lstrip('0')
tz_now = now.strftime('%z')
tz_num = tz_now[0:1].replace('+', '') + str(float(tz_now[1:3]) + float(tz_now[3:]) / 60)
curversion = get_rsync_version()
lastversion, last_protocol_version, pdate = get_NEWS_version_info()
protocol_version, subprotocol_version = get_protocol_versions()
# Default next version: bump preN, or move dev -> pre1.
version = curversion
m = re.search(r'pre(\d+)', version)
if m:
version = re.sub(r'pre\d+', 'pre' + str(int(m[1]) + 1), version)
else:
version = version.replace('dev', 'pre1')
print(f"\nCurrent version (version.h): {curversion}")
print(f"Last released version (NEWS.md): {lastversion}")
print(f"Current protocol version: {protocol_version} (last released: {last_protocol_version})")
ans = input(f"\nVersion to release [{version}, '.' to drop the preN suffix]: ").strip()
if ans == '.':
version = re.sub(r'pre\d+', '', version)
elif ans:
version = ans
if not re.match(r'^[\d.]+(pre\d+)?$', version):
die(f'Invalid version: "{version}"')
version = re.sub(r'[-.]*pre[-.]*', 'pre', version)
if 'pre' in version and not curversion.endswith('dev'):
lastversion = curversion
ans = input(f"Previous version to diff against [{lastversion}]: ").strip()
if ans:
lastversion = ans
lastversion = re.sub(r'[-.]*pre[-.]*', 'pre', lastversion)
m = re.search(r'(pre\d+)', version)
pre = m[1] if m else ''
finalversion = re.sub(r'pre\d+', '', version)
release = '0.1' if pre else '1'
ans = input(f"RPM release number [{release}]: ").strip()
if ans:
release = ans
if pre:
release += '.' + pre
proto_changed = protocol_version != last_protocol_version
if proto_changed:
if finalversion in pdate:
proto_change_date = pdate[finalversion]
else:
while True:
ans = input(f"Date the protocol changed to {protocol_version} (dd Mmm yyyy): ").strip()
if re.match(r'^\d\d \w\w\w \d\d\d\d$', ans):
break
proto_change_date = ans
else:
proto_change_date = ' ' * 11
if 'pre' in lastversion:
if not pre:
die("Refusing to diff a release version against a pre-release version.")
srcdir = srcdiffdir = lastsrcdir = 'src-previews'
elif pre:
srcdir = srcdiffdir = 'src-previews'
lastsrcdir = 'src'
else:
srcdir = lastsrcdir = 'src'
srcdiffdir = 'src-diffs'
state = {
'version': version,
'lastversion': lastversion,
'finalversion': finalversion,
'pre': pre,
'release': release,
'protocol_version': protocol_version,
'subprotocol_version': subprotocol_version,
'proto_changed': proto_changed,
'proto_change_date': proto_change_date,
'srcdir': srcdir,
'srcdiffdir': srcdiffdir,
'lastsrcdir': lastsrcdir,
'today': today,
'ztoday': ztoday,
'cl_today': cl_today,
'year': year,
'tz_num': tz_num,
'master_branch': args.master_branch,
}
save_state(state)
section("Release info")
for k in ('version', 'lastversion', 'release', 'srcdir', 'srcdiffdir', 'lastsrcdir',
'protocol_version', 'proto_changed', 'proto_change_date'):
print(f" {k}: {state[k]}")
print(f"\nWrote {STATE_FILE}. Re-run --step-2-prepare to change anything.")
# ---------- Step 3: tweak version files ----------
def step_3_tweak(args):
require_top_of_checkout()
state = load_state()
version = state['version']
finalversion = state['finalversion']
pre = state['pre']
release = state['release']
today = state['today']
ztoday = state['ztoday']
cl_today = state['cl_today']
year = state['year']
tz_num = state['tz_num']
proto_changed = state['proto_changed']
proto_change_date = state['proto_change_date']
protocol_version = state['protocol_version']
srcdir = state['srcdir']
specvars = {
'Version:': finalversion,
'Release:': release,
'%define fullversion': f'%{{version}}{pre}',
'Released': version + '.',
'%define srcdir': srcdir,
}
tweak_files = ['version.h', 'rsync.h', 'NEWS.md']
tweak_files += glob.glob('packaging/*.spec')
tweak_files += glob.glob('packaging/*/*.spec')
for fn in tweak_files:
with open(fn, 'r', encoding='utf-8') as fh:
old_txt = txt = fh.read()
if fn == 'version.h':
x_re = re.compile(r'^(#define RSYNC_VERSION).*', re.M)
txt = replace_or_die(x_re, r'\1 "%s"' % version, txt,
f"Unable to update RSYNC_VERSION in {fn}")
x_re = re.compile(r'^(#define MAINTAINER_TZ_OFFSET).*', re.M)
txt = replace_or_die(x_re, r'\1 ' + tz_num, txt,
f"Unable to update MAINTAINER_TZ_OFFSET in {fn}")
elif fn == 'rsync.h':
x_re = re.compile(r'(#define\s+SUBPROTOCOL_VERSION)\s+(\d+)')
repl = lambda m: m[1] + ' ' + (
'0' if not pre or not proto_changed
else '1' if m[2] == '0'
else m[2])
txt = replace_or_die(x_re, repl, txt,
f"Unable to find SUBPROTOCOL_VERSION in {fn}")
elif fn == 'NEWS.md':
efv = re.escape(finalversion)
x_re = re.compile(
r'^# NEWS for rsync %s \(UNRELEASED\)\s+## Changes in this version:\n' % efv
+ r'(\n### PROTOCOL NUMBER:\s+- The protocol number was changed to \d+\.\n)?')
rel_day = 'UNRELEASED' if pre else today
repl = (f'# NEWS for rsync {finalversion} ({rel_day})\n\n'
+ '## Changes in this version:\n')
if proto_changed:
repl += f'\n### PROTOCOL NUMBER:\n\n - The protocol number was changed to {protocol_version}.\n'
good_top = re.sub(r'\(.*?\)', '(UNRELEASED)', repl, 1)
msg = (f"The top of {fn} is not in the right format. It should be:\n" + good_top)
txt = replace_or_die(x_re, repl, txt, msg)
x_re = re.compile(
r'^(\| )(\S{2} \S{3} \d{4})(\s+\|\s+%s\s+\| ).{11}(\s+\| )\S{2}(\s+\|+)$' % efv,
re.M)
repl = lambda m: (m[1] + (m[2] if pre else ztoday) + m[3]
+ proto_change_date + m[4] + protocol_version + m[5])
txt = replace_or_die(x_re, repl, txt,
f'Unable to find "| ?? ??? {year} | {finalversion} | ... |" line in {fn}')
elif '.spec' in fn:
for var, val in specvars.items():
x_re = re.compile(r'^%s .*' % re.escape(var), re.M)
txt = replace_or_die(x_re, var + ' ' + val, txt,
f"Unable to update {var} in {fn}")
x_re = re.compile(r'^\* \w\w\w \w\w\w \d\d \d\d\d\d (.*)', re.M)
txt = replace_or_die(x_re, r'%s \1' % cl_today, txt,
f"Unable to update ChangeLog header in {fn}")
else:
die(f"Unrecognized file in tweak_files: {fn}")
if txt != old_txt:
print(f"Updating {fn}")
with open(fn, 'w', encoding='utf-8') as fh:
fh.write(txt)
cmd_chk(['packaging/year-tweak'])
section("git diff after tweaks")
cmd_run(['git', '--no-pager', 'diff'])
# ---------- Step 4: build ----------
def step_4_build(args):
require_top_of_checkout()
load_state() # just to ensure we've prepared
section("Running prepare-source + configure --prefix=/usr --with-rrsync + make + make gen")
# Always re-prepare so configure.sh is current; we run configure ourselves
# with the release-required flags rather than relying on the cached
# config.status (which may have been produced with different options).
if os.path.isfile('.fetch'):
cmd_chk(['./prepare-source', 'fetch'])
else:
cmd_chk(['./prepare-source'])
cmd_chk(['./configure', '--prefix=/usr', '--with-rrsync'])
cmd_chk(['make'])
cmd_chk(['make', 'gen'])
# ---------- Step 5: commit ----------
def step_5_commit(args):
require_top_of_checkout()
state = load_state()
version = state['version']
section("git status")
cmd_run(['git', 'status'])
if not confirm("Commit all current changes with the release message?"):
die("Aborted.")
cmd_chk(['git', 'commit', '-a', '-m', f'Preparing for release of {version} [buildall]'])
# ---------- Step 6: tag ----------
def step_6_tag(args):
require_top_of_checkout()
state = load_state()
version = state['version']
v_ver = 'v' + version
out = cmd_txt_chk(['git', 'tag', '-l', v_ver]).out
if out.strip():
if not confirm(f"Tag {v_ver} already exists. Delete and recreate?"):
die("Aborted.")
cmd_chk(['git', 'tag', '-d', v_ver])
# Prime the gpg agent so the actual tag signing won't prompt.
section("Priming gpg agent")
cmd_run("touch TeMp; gpg --sign TeMp; rm -f TeMp TeMp.gpg")
section(f"Creating signed tag {v_ver}")
out = cmd_txt(['git', 'tag', '-s', '-m', f'Version {version}.', v_ver],
capture='combined').out
print(out, end='')
if 'bad passphrase' in out.lower() or 'failed' in out.lower():
die("Tag creation failed.")
# ---------- Step 7: tarball + diff ----------
def step_7_tarball(args):
require_top_of_checkout()
state = load_state()
version = state['version']
lastversion = state['lastversion']
pre = state['pre']
srcdir = state['srcdir']
srcdiffdir = state['srcdiffdir']
lastsrcdir = state['lastsrcdir']
rsync_ver = 'rsync-' + version
rsync_lastver = 'rsync-' + lastversion
v_ver = 'v' + version
srctar_name = f"{rsync_ver}.tar.gz"
diff_name = f"{rsync_lastver}-{version}.diffs.gz"
srctar_file = os.path.join(FTP_DIR, srcdir, srctar_name)
diff_file = os.path.join(FTP_DIR, srcdiffdir, diff_name)
lasttar_file = os.path.join(FTP_DIR, lastsrcdir, rsync_lastver + '.tar.gz')
for d in (os.path.dirname(srctar_file), os.path.dirname(diff_file)):
os.makedirs(d, exist_ok=True)
if not os.path.isfile(lasttar_file):
die(f"Previous tarball not found: {lasttar_file}")
# Stage in ../release/work to keep the source checkout clean.
if os.path.isdir(WORK_DIR):
shutil.rmtree(WORK_DIR)
os.makedirs(WORK_DIR)
a_dir = os.path.join(WORK_DIR, 'a')
b_dir = os.path.join(WORK_DIR, 'b')
# Extract gen files from the previous tarball into work/a/.
tweaked_gen_files = [os.path.join(rsync_lastver, fn) for fn in GEN_FILES]
cmd_chk(['tar', '-C', WORK_DIR, '-xzf', lasttar_file, *tweaked_gen_files])
os.rename(os.path.join(WORK_DIR, rsync_lastver), a_dir)
# Copy current gen files (built in the top-level checkout) into work/b/.
os.makedirs(b_dir)
cmd_chk(['rsync', '-a', *GEN_FILES, b_dir + '/'])
section(f"Creating {diff_file}")
sed_script = r's:^((---|\+\+\+) [ab]/[^\t]+)\t.*:\1:' # no single quotes!
cmd_chk(
f"(git diff v{lastversion} {v_ver} -- ':!.github'; "
f"diff -upN {a_dir} {b_dir} | sed -r '{sed_script}') | gzip -9 >{diff_file}")
section(f"Creating {srctar_file}")
# Reuse work/b/ (which already holds the fresh gen files) as the release
# staging dir, then let "git archive" overlay the git-tracked source files
# on top. That way the tarball ends up with both gen files and source.
rsync_ver_dir = os.path.join(WORK_DIR, rsync_ver)
shutil.rmtree(a_dir)
os.rename(b_dir, rsync_ver_dir)
cmd_chk(f"git archive --format=tar --prefix={rsync_ver}/ {v_ver} | "
f"tar -C {WORK_DIR} -xf -")
cmd_chk(f"support/git-set-file-times --quiet --prefix={rsync_ver_dir}/")
cmd_chk(['fakeroot', 'tar', '-C', WORK_DIR, '-czf', srctar_file,
'--exclude=.github', rsync_ver])
# Leave staging in place; --step-8-update-ftp does its own thing.
print(f"\nCreated:\n {srctar_file}\n {diff_file}")
# ---------- Step 8: update ftp ----------
def step_8_update_ftp(args):
require_top_of_checkout()
state = load_state()
version = state['version']
lastversion = state['lastversion']
srcdir = state['srcdir']
srcdiffdir = state['srcdiffdir']
rsync_ver = 'rsync-' + version
rsync_lastver = 'rsync-' + lastversion
srctar_file = os.path.join(FTP_DIR, srcdir, f"{rsync_ver}.tar.gz")
diff_file = os.path.join(FTP_DIR, srcdiffdir,
f"{rsync_lastver}-{version}.diffs.gz")
section(f"Refreshing top-of-tree files in {FTP_DIR}")
md_files = ['README.md', 'NEWS.md', 'INSTALL.md']
html_files = [fn for fn in GEN_FILES if fn.endswith('.html')]
cmd_chk(['rsync', '-a', *md_files, *html_files, FTP_DIR + '/'])
cmd_chk(['./md-convert', '--dest', FTP_DIR, *md_files])
section(f"Regenerating {FTP_DIR}/ChangeLog.gz")
cmd_chk(f"git log --name-status | gzip -9 >{FTP_DIR}/ChangeLog.gz")
# Prime gpg agent and then sign the tar + diff.
section("Priming gpg agent")
cmd_run("touch TeMp; gpg --sign TeMp; rm -f TeMp TeMp.gpg")
for fn in (srctar_file, diff_file):
if not os.path.isfile(fn):
die(f"Missing file to sign: {fn}. Did --step-7-tarball run successfully?")
asc_fn = fn + '.asc'
if os.path.lexists(asc_fn):
os.unlink(asc_fn)
section(f"GPG-signing {fn}")
res = cmd_run(['gpg', '--batch', '-ba', fn])
if res.returncode not in (0, 2):
die("gpg signing failed.")
# ---------- Step 9: top-level hard links ----------
def step_9_toplinks(args):
require_top_of_checkout()
state = load_state()
pre = state['pre']
if pre:
print("Skipping: pre-releases do not get top-level hard links.")
return
version = state['version']
lastversion = state['lastversion']
srcdir = state['srcdir']
srcdiffdir = state['srcdiffdir']
rsync_ver = 'rsync-' + version
rsync_lastver = 'rsync-' + lastversion
srctar_file = os.path.join(FTP_DIR, srcdir, f"{rsync_ver}.tar.gz")
diff_file = os.path.join(FTP_DIR, srcdiffdir,
f"{rsync_lastver}-{version}.diffs.gz")
section("Removing stale top-level rsync-* files")
for find in [f'{FTP_DIR}/rsync-*.gz',
f'{FTP_DIR}/rsync-*.asc',
f'{FTP_DIR}/src-previews/rsync-*diffs.gz*']:
for fn in glob.glob(find):
os.unlink(fn)
top_link = [
srctar_file, srctar_file + '.asc',
diff_file, diff_file + '.asc',
]
for fn in top_link:
target = re.sub(r'/src(-\w+)?/', '/', fn)
if os.path.lexists(target):
os.unlink(target)
os.link(fn, target)
print(f" linked {target}")
# ---------- Step 10: push ftp ----------
def step_10_push_ftp(args):
host = require_samba_host()
if not os.path.isdir(FTP_DIR):
die(f"{FTP_DIR} does not exist. Run --step-1-fetch first.")
section(f"rsync ftp dir to {host}")
rsync_with_confirm(['-aivOHP', '--chown=:rsync', '--del',
f'-f._{os.path.join(FTP_DIR, ".filt")}',
f'{FTP_DIR}/', f'{host}:{FTP_REMOTE_PATH}/'])
# ---------- Step 11: push html ----------
def step_11_push_html(args):
host = require_samba_host()
if not os.path.isdir(HTML_DIR):
die(f"{HTML_DIR} does not exist. Run --step-1-fetch first.")
section(f"rsync html dir to {host}")
filt = os.path.join(HTML_DIR, 'filt')
rsync_with_confirm(['-aivOHP', '--chown=:rsync', '--del',
f'-f._{filt}',
f'{HTML_DIR}/', f'{host}:{HTML_REMOTE_PATH}/'])
# ---------- Step 12: print push-git instructions ----------
def step_12_push_git(args):
state = load_state()
version = state['version']
master_branch = state['master_branch']
v_ver = 'v' + version
print(f"""\
{DASH_LINE}
Run these from the rsync-git checkout (this script does not push for you):
git push origin {master_branch}
git push origin {v_ver}
If you have a 'samba' remote configured (git.samba.org:/data/git/rsync.git):
git push samba {master_branch}
git push samba {v_ver}
Then upload the tarball + .asc to the GitHub release for {v_ver},
and announce on rsync-announce@, rsync@, and Discord.
""")
# ---------- shared rsync-with-confirm ----------
def rsync_with_confirm(rsync_args):
"""Run an rsync command in dry-run mode, then ask before running for real."""
cmd_run(['rsync', '--dry-run', *rsync_args])
if confirm("Run without --dry-run?"):
cmd_run(['rsync', *rsync_args])
# ---------- dispatch ----------
STEP_FUNCS = {
'step-1-fetch': step_1_fetch,
'step-2-prepare': step_2_prepare,
'step-3-tweak': step_3_tweak,
'step-4-build': step_4_build,
'step-5-commit': step_5_commit,
'step-6-tag': step_6_tag,
'step-7-tarball': step_7_tarball,
'step-8-update-ftp': step_8_update_ftp,
'step-9-toplinks': step_9_toplinks,
'step-10-push-ftp': step_10_push_ftp,
'step-11-push-html': step_11_push_html,
'step-12-push-git': step_12_push_git,
}
def signal_handler(sig, frame):
die("\nAborting due to SIGINT.")
def main():
parser = argparse.ArgumentParser(
description="Step-based release script for rsync.",
formatter_class=argparse.RawDescriptionHelpFormatter,
epilog="Run --list to see the steps. Each invocation runs exactly one --step-* option.")
parser.add_argument('--branch', '-b', dest='master_branch', default='master',
help="The branch to release (default: master).")
parser.add_argument('--list', action='store_true',
help="List all release steps and exit.")
grp = parser.add_mutually_exclusive_group()
for flag, descr in STEPS:
grp.add_argument('--' + flag, dest='step', action='store_const',
const=flag, help=descr)
args = parser.parse_args()
if args.list:
print("Release steps:")
for flag, descr in STEPS:
print(f" --{flag:18s} {descr}")
return
if not args.step:
parser.error("pick one --step-N-XX option (or --list to see them).")
signal.signal(signal.SIGINT, signal_handler)
os.environ['LESS'] = 'mqeiXR'
STEP_FUNCS[args.step](args)
if __name__ == '__main__':
main()
# vim: sw=4 et ft=python

124
packaging/samba-rsync Executable file
View File

@@ -0,0 +1,124 @@
#!/bin/bash
# This script makes it easy to update the ftp & html directories on the samba.org server.
# It expects the 2 *_DEST directories to contain updated files that need to be sent to
# the remote server. If these directories don't exist yet, they will be copied from the
# remote server (while also making the html dir a git checkout).
FTP_SRC="$HOME/samba-rsync-ftp"
HTML_SRC="$HOME/samba-rsync-html"
FTP_DEST="/home/ftp/pub/rsync"
HTML_DEST="/home/httpd/html/rsync"
HTML_GIT='git.samba.org:/data/git/rsync-web.git'
export RSYNC_PARTIAL_DIR=''
case "$RSYNC_SAMBA_HOST" in
*.samba.org) ;;
*)
echo "You must set RSYNC_SAMBA_HOST in your environment to the samba hostname to use." >&2
exit 1
;;
esac
MODE=''
REVERSE=''
while (( $# )); do
case "$1" in
-R|--reverse) REVERSE=yes ;;
f|ftp) MODE=ftp ;;
h|html) MODE=html ;;
-h|--help)
echo "Usage: [-R] [f|ftp|h|html]"
echo "-R --reverse Copy the files from the server to the local host."
echo " The default is to update the remote files."
echo "-h --help Output this help message."
echo " "
echo "The script will prompt if ftp or html is not specified on the command line."
echo "Only one category can be copied at a time. When pulling html files, a git"
echo "checkout will be either created or updated prior to the rsync copy."
exit
;;
*)
echo "Invalid option: $1" >&2
exit 1
;;
esac
shift
done
while [ ! "$MODE" ]; do
if [ "$REVERSE" = yes ]; then
DIRECTION=FROM
else
DIRECTION=TO
fi
echo -n "Copy which files $DIRECTION the server? ftp or html? "
read ans
case "$ans" in
f*) MODE=ftp ;;
h*) MODE=html ;;
'') exit 1 ;;
*) echo "You must answer f or h to copy the ftp or html data." ;;
esac
done
if [ "$MODE" = ftp ]; then
SRC_DIR="$FTP_SRC"
DEST_DIR="$FTP_DEST"
FILT=".filt"
else
SRC_DIR="$HTML_SRC"
DEST_DIR="$HTML_DEST"
FILT="filt"
fi
function do_rsync {
rsync --dry-run "${@}" | grep -v 'is uptodate$'
echo ''
echo -n "Run without --dry-run? [n] "
read ans
case "$ans" in
y*) rsync "${@}" | grep -v 'is uptodate$' ;;
esac
}
if [ -d "$SRC_DIR" ]; then
REVERSE_RSYNC=do_rsync
else
echo "The directory $SRC_DIR does not exist yet."
echo -n "Do you want to create it? [n] "
read ans
case "$ans" in
y*) ;;
*) exit 1 ;;
esac
REVERSE=yes
REVERSE_RSYNC=rsync
fi
if [ "$REVERSE" = yes ]; then
OPTS='-aivOHP'
TMP_FILT="$SRC_DIR/tmp-filt"
echo "Copying files from $RSYNC_SAMBA_HOST to $SRC_DIR ..."
if [ "$MODE" = html ]; then
if [ $REVERSE_RSYNC = rsync ]; then
git clone "$HTML_GIT" "$SRC_DIR" || exit 1
else
cd "$SRC_DIR" || exit 1
git pull || exit 1
fi
sed -n -e 's/[-P]/H/p' "$SRC_DIR/$FILT" >"$TMP_FILT"
OPTS="${OPTS}f._$TMP_FILT"
else
OPTS="${OPTS}f:_$FILT"
fi
$REVERSE_RSYNC "$OPTS" "$RSYNC_SAMBA_HOST:$DEST_DIR/" "$SRC_DIR/"
rm -f "$TMP_FILT"
exit
fi
cd "$SRC_DIR" || exit 1
echo "Copying files from $SRC_DIR to $RSYNC_SAMBA_HOST ..."
do_rsync -aivOHP --del -f._$FILT . "$RSYNC_SAMBA_HOST:$DEST_DIR/"

33
packaging/send-news Executable file
View File

@@ -0,0 +1,33 @@
#!/bin/bash -e
# This script expects the ~/src/rsync directory to contain the rsync
# source that has been updated. It also expects the auto-build-save
# directory to have been created prior to the running of configure so
# that each branch has its own build directory underneath. This supports
# the maintainer workflow for the rsync-patches files maintenace.
FTP_SRC="$HOME/samba-rsync-ftp"
FTP_DEST="/home/ftp/pub/rsync"
MD_FILES="README.md INSTALL.md NEWS.md"
case "$RSYNC_SAMBA_HOST" in
*.samba.org) ;;
*)
echo "You must set RSYNC_SAMBA_HOST in your environment to the samba hostname to use." >&2
exit 1
;;
esac
if [ ! -d "$FTP_SRC" ]; then
packaging/samba-rsync ftp # Ask to initialize the local ftp dir
fi
cd ~/src/rsync
make man
./md-convert --dest="$FTP_SRC" $MD_FILES
rsync -aiic $MD_FILES auto-build-save/master/*.?.html "$FTP_SRC"
cd "$FTP_SRC"
rsync -aiic README.* INSTALL.* NEWS.* *.?.html "$RSYNC_SAMBA_HOST:$FTP_DEST/"

View File

@@ -7,6 +7,9 @@
import sys, os, re, argparse, subprocess
from datetime import datetime
MAINTAINER_NAME = 'Wayne Davison'
MAINTAINER_SUF = ' ' + MAINTAINER_NAME + "\n"
def main():
latest_year = '2000'
@@ -19,6 +22,10 @@ def main():
m = argparse.Namespace(**m.groupdict())
if m.year > latest_year:
latest_year = m.year
if m.fn.startswith('zlib/') or m.fn.startswith('popt/'):
continue
if re.search(r'\.(c|h|sh|test)$', m.fn):
maybe_edit_copyright_year(m.fn, m.year)
proc.communicate()
fn = 'latest-year.h'
@@ -32,8 +39,55 @@ def main():
fh.write(txt)
def maybe_edit_copyright_year(fn, year):
opening_lines = [ ]
copyright_line = None
with open(fn, 'r', encoding='utf-8') as fh:
for lineno, line in enumerate(fh):
opening_lines.append(line)
if lineno > 3 and not re.search(r'\S', line):
break
m = re.match(r'^(?P<pre>.*Copyright\s+\S+\s+)(?P<year>\d\d\d\d(?:-\d\d\d\d)?(,\s+\d\d\d\d)*)(?P<suf>.+)', line)
if not m:
continue
copyright_line = argparse.Namespace(**m.groupdict())
copyright_line.lineno = len(opening_lines)
copyright_line.is_maintainer_line = MAINTAINER_NAME in copyright_line.suf
copyright_line.txt = line
if copyright_line.is_maintainer_line:
break
if not copyright_line:
return
if copyright_line.is_maintainer_line:
cyears = copyright_line.year.split('-')
if year == cyears[0]:
cyears = [ year ]
else:
cyears = [ cyears[0], year ]
txt = copyright_line.pre + '-'.join(cyears) + MAINTAINER_SUF
if txt == copyright_line.txt:
return
opening_lines[copyright_line.lineno - 1] = txt
else:
if fn.startswith('lib/') or fn.startswith('testsuite/'):
return
txt = copyright_line.pre + year + MAINTAINER_SUF
opening_lines[copyright_line.lineno - 1] += txt
remaining_txt = fh.read()
print(f"Updating {fn} with year {year}")
with open(fn, 'w', encoding='utf-8') as fh:
fh.write(''.join(opening_lines))
fh.write(remaining_txt)
if __name__ == '__main__':
parser = argparse.ArgumentParser(description="Grab the year of the last mod for our c & h files and make sure the LATEST_YEAR value is accurate.")
parser = argparse.ArgumentParser(description="Grab the year of last mod for our c & h files and make sure the Copyright comment is up-to-date.")
args = parser.parse_args()
main()

55
popt/findme.c Normal file
View File

@@ -0,0 +1,55 @@
/** \ingroup popt
* \file popt/findme.c
*/
/* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
file accompanying popt source distributions, available from
ftp://ftp.rpm.org/pub/rpm/dist. */
#include "system.h"
#include "findme.h"
const char * findProgramPath(const char * argv0)
{
char * path = getenv("PATH");
char * pathbuf;
char * start, * chptr;
char * buf;
size_t bufsize;
if (argv0 == NULL) return NULL; /* XXX can't happen */
/* If there is a / in the argv[0], it has to be an absolute path */
if (strchr(argv0, '/'))
return xstrdup(argv0);
if (path == NULL) return NULL;
bufsize = strlen(path) + 1;
start = pathbuf = alloca(bufsize);
if (pathbuf == NULL) return NULL; /* XXX can't happen */
strlcpy(pathbuf, path, bufsize);
bufsize += sizeof "/" - 1 + strlen(argv0);
buf = malloc(bufsize);
if (buf == NULL) return NULL; /* XXX can't happen */
chptr = NULL;
/*@-branchstate@*/
do {
if ((chptr = strchr(start, ':')))
*chptr = '\0';
snprintf(buf, bufsize, "%s/%s", start, argv0);
if (!access(buf, X_OK))
return buf;
if (chptr)
start = chptr + 1;
else
start = NULL;
} while (start && *start);
/*@=branchstate@*/
free(buf);
return NULL;
}

20
popt/findme.h Normal file
View File

@@ -0,0 +1,20 @@
/** \ingroup popt
* \file popt/findme.h
*/
/* (C) 1998-2000 Red Hat, Inc. -- Licensing details are in the COPYING
file accompanying popt source distributions, available from
ftp://ftp.rpm.org/pub/rpm/dist. */
#ifndef H_FINDME
#define H_FINDME
/**
* Return absolute path to executable by searching PATH.
* @param argv0 name of executable
* @return (malloc'd) absolute path to executable (or NULL)
*/
/*@null@*/ const char * findProgramPath(/*@null@*/ const char * argv0)
/*@*/;
#endif

View File

@@ -70,7 +70,6 @@ extern int fuzzy_basis;
extern struct name_num_item *xfer_sum_nni;
extern int xfer_sum_len;
extern int use_secure_symlinks;
static struct bitbag *delayed_bits = NULL;
static int phase = 0, redoing = 0;
@@ -83,44 +82,6 @@ static int updating_basis_or_equiv;
#define MAX_UNIQUE_NUMBER 999999
#define MAX_UNIQUE_LOOP 100
/* Open a basis/output path that may legitimately be an operator-trusted
* ABSOLUTE path -- e.g. an absolute --partial-dir ("a directory reserved for
* partial-dir work") or --backup-dir. secure_relative_open() deliberately
* rejects an absolute relpath, so feeding it the whole absolute partialptr
* (with a NULL basedir) returns EINVAL: the basis fd is then -1, no basis is
* mapped, and receive_data() omits every matched block from the whole-file
* verification checksum -> a spurious "failed verification" that strands the
* (correct) data in the partial-dir forever.
*
* The operator's directory is trusted; only the leaf basename is peer-supplied.
* So when basedir is NULL and relpath is absolute, split it into its directory
* (trusted) and leaf and confine just the leaf -- exactly how secure_relative_
* open already trusts an absolute basedir while O_NOFOLLOW-confining the leaf.
* Anything else is a straight pass-through that preserves the strict contract. */
static int secure_basis_open(const char *basedir, const char *relpath, int flags, mode_t mode)
{
if (!basedir && relpath && *relpath == '/') {
const char *slash = strrchr(relpath, '/');
const char *leaf = slash + 1;
char dirbuf[MAXPATHLEN];
const char *dir;
if (slash == relpath)
dir = "/";
else {
size_t dlen = slash - relpath;
if (dlen >= sizeof dirbuf) {
errno = ENAMETOOLONG;
return -1;
}
memcpy(dirbuf, relpath, dlen);
dirbuf[dlen] = '\0';
dir = dirbuf;
}
return secure_relative_open(dir, leaf, flags, mode);
}
return secure_relative_open(basedir, relpath, flags, mode);
}
/* get_tmpname() - create a tmp filename for a given filename
*
* If a tmpdir is defined, use that as the directory to put it in. Otherwise,
@@ -253,12 +214,7 @@ int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
* access to ensure that there is no race condition. They will be
* correctly updated after the right owner and group info is set.
* (Thanks to snabb@epipe.fi for pointing this out.) */
/* When use_secure_symlinks is on (non-chroot daemon with munge_symlinks),
* use secure_mkstemp to prevent symlink race attacks on parent directories. */
if (use_secure_symlinks)
fd = secure_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
else
fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
#if 0
/* In most cases parent directories will already exist because their
@@ -356,12 +312,7 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
}
}
while (1) {
data = NULL;
i = recv_token(f_in, &data);
if (i == 0)
break;
while ((i = recv_token(f_in, &data)) != 0) {
if (INFO_GTE(PROGRESS, 1))
show_progress(offset, total_size);
@@ -369,10 +320,6 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH | MSK_ACTIVE_RECEIVER);
if (i > 0) {
if (!data) {
rprintf(FERROR, "Invalid literal token with no data [%s]\n", who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
if (DEBUG_GTE(DELTASUM, 3)) {
rprintf(FINFO,"data recv %d at %s\n",
i, big_num(offset));
@@ -390,11 +337,6 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
}
i = -(i+1);
if (i < 0 || i >= sum.count) {
rprintf(FERROR, "Invalid block index %d (count=%ld) [%s]\n",
i, (long)sum.count, who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
offset2 = i * (OFF_T)sum.blength;
len = sum.blength;
if (i == (int)sum.count-1 && sum.remainder != 0)
@@ -402,18 +344,6 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
stats.matched_data += len;
/* A block match can only be honored if we actually mapped the
* basis. If we didn't (basis open failed), the sender should
* never have been told a basis existed -- treat it as a protocol
* inconsistency rather than silently omitting these bytes from
* the verification checksum (which yields a spurious failure) or
* leaving a hole in the output. */
if (!mapbuf) {
rprintf(FERROR, "got a block match with no basis file for %s [%s]\n",
full_fname(fname), who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
if (DEBUG_GTE(DELTASUM, 3)) {
rprintf(FINFO,
"chunk[%d] of size %ld at %s offset=%s%s\n",
@@ -506,7 +436,7 @@ static void handle_delayed_updates(char *local_name)
}
/* We don't use robust_rename() here because the
* partial-dir must be on the same drive. */
if (do_rename_at(partialptr, fname) < 0) {
if (do_rename(partialptr, fname) < 0) {
rsyserr(FERROR_XFER, errno,
"rename failed for %s (from %s)",
full_fname(fname), partialptr);
@@ -522,10 +452,7 @@ static void handle_delayed_updates(char *local_name)
static void no_batched_update(int ndx, BOOL is_redo)
{
struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
struct file_struct *file;
if (ndx < flist->ndx_start)
exit_cleanup(RERR_PROTOCOL);
file = flist->files[ndx - flist->ndx_start];
struct file_struct *file = flist->files[ndx - flist->ndx_start];
rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
is_redo ? " resend of" : "", f_name(file, NULL));
@@ -662,8 +589,6 @@ int recv_files(int f_in, int f_out, char *local_name)
if (ndx - cur_flist->ndx_start >= 0)
file = cur_flist->files[ndx - cur_flist->ndx_start];
else if (cur_flist->parent_ndx < 0)
exit_cleanup(RERR_PROTOCOL);
else
file = dir_flist->files[cur_flist->parent_ndx];
fname = local_name ? local_name : f_name(file, fbuf);
@@ -843,9 +768,8 @@ int recv_files(int f_in, int f_out, char *local_name)
fnamecmp = fname;
}
/* open the file (secure_basis_open tolerates an operator-trusted
* absolute fnamecmp, e.g. an absolute --partial-dir basis) */
fd1 = secure_basis_open(basedir, fnamecmp, O_RDONLY, 0);
/* open the file */
fd1 = secure_relative_open(basedir, fnamecmp, O_RDONLY, 0);
if (fd1 == -1 && protocol_version < 29) {
if (fnamecmp != fname) {
@@ -930,21 +854,11 @@ int recv_files(int f_in, int f_out, char *local_name)
/* We now check to see if we are writing the file "inplace" */
if (inplace || one_inplace) {
fnametmp = one_inplace ? partialptr : fname;
/* When use_secure_symlinks is on (non-chroot daemon),
* use secure open to prevent symlink race attacks where an
* attacker could switch a directory to a symlink between
* path validation and file open. */
if (use_secure_symlinks)
fd2 = secure_basis_open(NULL, fnametmp, O_WRONLY|O_CREAT, 0600);
else
fd2 = do_open(fnametmp, O_WRONLY|O_CREAT, 0600);
fd2 = do_open(fnametmp, O_WRONLY|O_CREAT, 0600);
#ifdef linux
if (fd2 == -1 && errno == EACCES) {
/* Maybe the error was due to protected_regular setting? */
if (use_secure_symlinks)
fd2 = secure_relative_open(NULL, fname, O_WRONLY, 0600);
else
fd2 = do_open(fname, O_WRONLY, 0600);
fd2 = do_open(fname, O_WRONLY, 0600);
}
#endif
if (fd2 == -1) {
@@ -996,7 +910,7 @@ int recv_files(int f_in, int f_out, char *local_name)
recv_ok = -1;
else if (fnamecmp == partialptr) {
if (!one_inplace)
do_unlink_at(partialptr);
do_unlink(partialptr);
handle_partial_dir(partialptr, PDIR_DELETE);
}
} else if (keep_partial && partialptr && (!one_inplace || delay_updates)) {
@@ -1005,7 +919,7 @@ int recv_files(int f_in, int f_out, char *local_name)
"Unable to create partial-dir for %s -- discarding %s.\n",
local_name ? local_name : f_name(file, NULL),
recv_ok ? "completed file" : "partial file");
do_unlink_at(fnametmp);
do_unlink(fnametmp);
recv_ok = -1;
} else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
file, recv_ok, !partial_dir))
@@ -1016,7 +930,7 @@ int recv_files(int f_in, int f_out, char *local_name)
} else
partialptr = NULL;
} else if (!one_inplace)
do_unlink_at(fnametmp);
do_unlink(fnametmp);
cleanup_disable();

11
rsync-web/.gitignore vendored
View File

@@ -1,11 +0,0 @@
/.xvpics
/doxygen/
/tech_report/IMG_PARAMS.dir
/tech_report/IMG_PARAMS.pag
/upload
/netware
/pre-change
/index.html-*
/rsync-and-debian/rsync-and-debian.html
/rsync-and-debian/rsync-and-debian.ps
/badge.svg

View File

@@ -1,674 +0,0 @@
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. &lt;<a href="https://fsf.org/">https://fsf.org/</a>&gt;
Everyone is permitted to copy and distribute verbatim copies
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
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state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
&lt;one line to give the program's name and a brief idea of what it does.&gt;
Copyright (C) &lt;year&gt; &lt;name of author&gt;
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see &lt;<a href="https://www.gnu.org/licenses/">https://www.gnu.org/licenses/</a>&gt;.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
&lt;program&gt; Copyright (C) &lt;year&gt; &lt;name of author&gt;
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
&lt;<a href="https://www.gnu.org/licenses/">https://www.gnu.org/licenses/</a>&gt;.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
&lt;<a href="https://www.gnu.org/philosophy/why-not-lgpl.html">https://www.gnu.org/philosophy/why-not-lgpl.html</a>&gt;.

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@@ -1,340 +0,0 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
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When we speak of free software, we are referring to freedom, not
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To protect your rights, we need to make restrictions that forbid
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We protect your rights with two steps: (1) copyright the software, and
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Finally, any free program is threatened constantly by software
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<hr>
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
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<hr>
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<hr>
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<hr>
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END OF TERMS AND CONDITIONS
<hr>
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
&lt;one line to give the program's name and a brief idea of what it does.&gt;
Copyright (C) &lt;year&gt; &lt;name of author&gt;
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
&lt;signature of Ty Coon&gt;, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync FAQ</TITLE>
</HEAD>
<!--#include virtual="header.html" -->
<H2 align="center">Frequently Asked Questions</H2>
<table><tr valign=top><td><ul>
<li><a href="#1">the transfer fails to finish</a><br>
<li><a href="#2">rsync recopies the same files</a><br>
<li><a href="#3">is your shell clean</a><br>
<li><a href="#4">memory usage</a><br>
<li><a href="#5">out of memory</a><br>
<li><a href="#6">rsync through a firewall</a><br>
<li><a href="#7">rsync and cron</a><br>
</ul></td><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td><ul>
<li><a href="#8">rsync: Command not found</a><br>
<li><a href="#9">spaces in filenames</a><br>
<li><a href="#10">ignore "vanished files" warning</a><br>
<li><a href="#11">read-only file system</a><br>
<li><a href="#12">multiplexing overflow 101:7104843</a><br>
<li><a href="#13">inflate (token) returned -5</a><br>
</ul></td></tr></table>
<hr>
<h3><a name=1>the transfer fails to finish</a></h3>
<p>If you get an error like one of these:
<pre>rsync: error writing 4 unbuffered bytes - exiting: Broken pipe
rsync error: error in rsync protocol data stream (code 12) at io.c(463)
</pre>
<p>or
<pre>rsync: connection unexpectedly closed (24 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(342)
</pre>
<p>please read the <a href="issues.html">issues and debugging page</a>
for details on how you can try to figure out what is going wrong.
<hr>
<h3><a name=2>rsync recopies the same files</a></h3>
<p>Some people occasionally report that rsync copies too many files when
they expect it to copy only a few. In most cases the explanation is
that you forgot to include the --times (-t) option in the original copy,
so rsync is forced to (efficiently) transfer every file that differs in
its modified time to discover what data (if any) has changed.
<p>Another common cause involves sending files to an Microsoft filesystem:
if the file's modified time is an odd value but the receiving filesystem
can only store even values, then rsync will re-transfer too many files.
You can avoid this by specifying the --modify-window=1 option.
<p>Yet another periodic case can happen when daylight-savings time
changes if your OS+filesystem saves file times in local time instead of
UTC. For a full explanation of this and some suggestions on how to
avoid them problem, see <a href="daylight-savings.html">this document</a>.
<p>Something else that can trip up rsync is a filesystem changeing the
filename behind the scenes. This can happen when a filesystem changes
an all-uppercase name into lowercase, or when it decomposes UTF-8 behind
your back.
<blockquote>
<p>An example of the latter can occur with HFS+ on Mac OS X: if you
copy a directory with a file that has a UTF-8 character sequence in it,
say a 2-byte umlaut-u (\0303\0274), the file will get that character
stored by the filesystem using 3 bytes (\0165\0314\0210), and rsync will
not know that these differing filenames are the same file (it will, in
fact, remove a prior copy of the file if --delete is enabled, and then
recreate it).
<p>You can avoid a charset problem by passing an appropriate --iconv
option to rsync that tells it what character-set the source files are,
and what character-set the destination files get stored in. For
instance, the above Mac OS X problem would be dealt with by using
--iconv=UTF-8,UTF8-MAC (UTF8-MAC is a pseudo-charset recognized by Mac
OS X iconv in which all characters are decomposed).
</blockquote>
<p>If you think that rsync is copying too many files, look at the
itemized output (-i) to see why rsync is doing the update (e.g. the 't'
flag indicates that the time differs, or all pluses indicates that rsync
thinks the file doesn't exist). You can also look at the stats produced
with -v and see if rsync is really sending all the data. See also the
--checksum (-c) option for one way to avoid the extra copying of files
that don't have synchronized modified times (but keep in mind that the
-c option eats lots of disk I/O, and can be rather slow).
<hr>
<h3><a name=3>is your shell clean</a></h3>
<p>The "is your shell clean" message and the "protocol mismatch" message
are usually caused by having some sort of program in your .cshrc, .profile,
.bashrc or equivalent file that writes a message every time you connect
using a remote-shell program (such as ssh or rsh). Data written in this
way corrupts the rsync data stream. rsync detects this at startup and
produces those error messages. However, if you are using rsync-daemon
syntax (host::path or rsync://) without using a remote-shell program (no
--rsh or -e option), there is not remote-shell program involved, and the
problem is probably caused by an error on the daemon side (so check the
daemon logs).
<p>A good way to test if your remote-shell connection is clean is to try
something like this (use ssh or rsh, as appropriate):
<blockquote><pre>ssh remotesystem /bin/true &gt; test.dat</pre></blockquote>
<p>That should create a file called test.dat with nothing in it. If
test.dat is not of zero length then your shell is not clean. Look at the
contents of test.dat to see what was sent. Look at all the startup files on
remotesystem to try and find the problem.
<hr>
<h3><a name=4>memory usage</a></h3>
<p>Rsync versions before 3.0.0 always build the entire list of files to be
transferred at the beginning and hold it in memory for the entire run. Rsync
needs about 100 bytes to store all the relevant information for one file,
so (for example) a run with 800,000 files would consume about 80M of
memory. -H and --delete increase the memory usage further.
<p>Version 3.0.0 slightly reduced the memory used per file by not storing fields
not needed for a particular file. It also introduced an incremental recursion
mode that builds the file list in chunks and holds each chunk in memory only as
long as it is needed. This mode dramatically reduces memory usage, but it
only works provided that both sides are 3.0.0 or newer and certain options that
rsync currently can't handle in this mode are not being used.
<hr>
<h3><a name=5>out of memory</a></h3>
<p>The usual reason for "out of memory" when running rsync is that you are
transferring a _very_ large number of files. The size of the files doesn't
matter, only the total number of files. If memory is a problem, first try to
use the incremental recursion mode: upgrade both sides to rsync 3.0.0 or
newer and avoid options that disable incremental recursion (e.g., use
<tt>--delete-delay</tt> instead of <tt>--delete-after</tt>). If this is not
possible, you can break the rsync run into smaller chunks operating on
individual subdirectories using <tt>--relative</tt> and/or exclude rules.
<hr>
<h3><a name=6>rsync through a firewall</a></h3>
<p>If you have a setup where there is no way to directly connect two
systems for an rsync transfer, there are several ways to get a firewall
system to act as an intermediary in the transfer. You'll find full details
on the <a href="firewall.html">firewall methods</a> page.
<hr>
<h3><a name=7>rsync and cron</a></h3>
<p>On some systems (notably SunOS4) cron supplies what looks like a socket
to rsync, so rsync thinks that stdin is a socket. This means that if you
start rsync with the --daemon switch from a cron job you end up rsync
thinking it has been started from inetd. The fix is simple&mdash;just
redirect stdin from /dev/null in your cron job.
<hr>
<h3><a name=8>rsync: Command not found</a></h3>
<p>This error is produced when the remote shell is unable to locate the rsync
binary in your path. There are 3 possible solutions:
<ol>
<li>install rsync in a "standard" location that is in your remote path.
<li>modify your .cshrc, .bashrc etc on the remote system to include the path
that rsync is in
<li>use the --rsync-path option to explicitly specify the path on the
remote system where rsync is installed
</ol>
<p>You may echo find the command:
<blockquote><pre>ssh host 'echo $PATH'</pre></blockquote>
<p>for determining what your remote path is.
<hr>
<h3><a name=9>spaces in filenames</a></h3>
<p>Can rsync copy files with spaces in them?
<p>Short answer: Yes, rsync can handle filenames with spaces.
<p>Long answer:
<p>Rsync handles spaces just like any other unix command line application.
Within the code spaces are treated just like any other character so a
filename with a space is no different from a filename with any other
character in it.
<p>The problem of spaces is in the argv processing done to interpret the
command line. As with any other unix application you have to escape spaces
in some way on the command line or they will be used to separate arguments.
<p>It is slightly trickier in rsync (and other remote-copy programs like
scp) because rsync sends a command line to the remote system to launch the
peer copy of rsync (this assumes that we're not talking about daemon mode,
which is not affected by this problem because no remote shell is involved
in the reception of the filenames). The command line is interpreted by the
remote shell and thus the spaces need to arrive on the remote system
escaped so that the shell doesn't split such filenames into multiple
arguments.
<p>For example:
<blockquote><pre>rsync -av host:'a long filename' /tmp/</pre></blockquote>
<p>This is usually a request for rsync to copy 3 files from the remote
system, "a", "long", and "filename" (the only exception to this is for a
system running a shell that does not word-split arguments in its commands,
and that is exceedingly rare). If you wanted to request a single file with
spaces, you need to get some kind of space-quoting characters to the remote
shell that is running the remote rsync command. The following commands
should all work:
<blockquote><pre>rsync -av host:'"a long filename"' /tmp/
rsync -av host:'a\ long\ filename' /tmp/
rsync -av host:a\\\ long\\\ filename /tmp/</pre></blockquote>
<p>You might also like to use a '?' in place of a space as long as there
are no other matching filenames than the one with spaces (since '?' matches
any character):
<blockquote><pre>rsync -av host:a?long?filename /tmp/</pre></blockquote>
<p>As long as you know that the remote filenames on the command line
are interpreted by the remote shell then it all works fine.
<hr>
<h3><a name=10>ignore "vanished files" warning</a></h3>
<p>Some folks would like to ignore the "vanished files" warning, which
manifests as an exit-code 24. The easiest way to do this is to create
a shell script wrapper. For instance, name this something like
"rsync-no24":
<blockquote><pre>#!/bin/sh
rsync "$@"
e=$?
if test $e = 24; then
exit 0
fi
exit $e</pre></blockquote>
<hr>
<h3><a name=11>read-only file system</a></h3>
<p>If you get "Read-only file system" as an error when sending to a rsync
daemon then you probably forgot to set "read only = no" for that module.
<hr>
<h3><a name=12>multiplexing overflow 101:7104843</a></h3>
<p>This mysterious error, or the similar "invalid message 101:7104843", can
happen if one of the rsync processes is killed for some reason and a message
beginning with the four characters "Kill" gets inserted into the protocol
stream as a result. To solve the problem, you'll need to figure out why rsync
is being killed.
<hr>
<h3><a name=13>inflate (token) returned -5</a></h3>
This error means that rsync failed to handle an expected error from the
compression code for a file that happened to be transferred with a block size
of 32816 bytes. You can avoid this issue for the affected file by transferring
it with a manually-set block size (e.g. --block-size=33000), or by upgrading
the receiving side to rsync 3.0.7.
<hr>
<!--#include virtual="footer.html" -->

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<TITLE>rsync's license</TITLE>
</HEAD>
<!--#include virtual="header.html" -->
Beginning with 3.0.0, rsync is available under the <b>GNU General Public
License version 3</b>. <i>(Older releases were available under the
<a href="GPL2.html">GPL version 2</a>.)</i>
<pre><small>
<!--#include virtual="COPYING.html" -->
</small></pre>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync's license</TITLE>
</HEAD>
<!--#include virtual="header.html" -->
Releases <b>prior</b> to 3.0.0 were released under the
<b>GNU General Public License version 2</b>:
<pre><small>
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</small></pre>
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#!/bin/sh
# This script does personal backups to a rsync backup server. You will end up
# with a 7 day rotating incremental backup. The incrementals will go
# into subdirectories named after the day of the week, and the current
# full backup goes into a directory called "current"
# tridge@linuxcare.com
# directory to backup
BDIR=/home/$USER
# excludes file - this contains a wildcard pattern per line of files to exclude
EXCLUDES=$HOME/cron/excludes
# the name of the backup machine
BSERVER=owl
# your password on the backup server
export RSYNC_PASSWORD=XXXXXX
########################################################################
BACKUPDIR=`date +%A`
OPTS="--force --ignore-errors --delete-excluded --exclude-from=$EXCLUDES
--delete --backup --backup-dir=/$BACKUPDIR -a"
export PATH=$PATH:/bin:/usr/bin:/usr/local/bin
# the following line clears the last weeks incremental directory
[ -d $HOME/emptydir ] || mkdir $HOME/emptydir
rsync --delete -a $HOME/emptydir/ $BSERVER::$USER/$BACKUPDIR/
rmdir $HOME/emptydir
# now the actual transfer
rsync $OPTS $BDIR $BSERVER::$USER/current

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#!/bin/sh
rm -f badge.svg
wget https://github.com/RsyncProject/rsync/workflows/build/badge.svg
rsync -aiic --inplace --remove-source-files badge.svg $SAMBA_HOST:/home/httpd/html/rsync/

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#!/bin/sh
if [ -d rsync-and-debian ]; then
rsync -aviOHFFc --del -f._filt . $SAMBA_HOST:/home/httpd/html/rsync/ "${@}"
else
echo "Run this from the root of the html hierarchy."
exit 1
fi

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync bug-tracking</TITLE>
</HEAD>
<!--#include virtual="header.html" -->
<H2 align="center">rsync bug-tracking</H2>
<p> Please use this checklist combined with the help on the
<a href="issues.html">issues and debugging</a> page before
reporting a bug. Thanks!
<ul>
<li> If you're not using the latest released version, please upgrade before
reporting a bug.
<li> If you're using the latest released version, consult the
<a href="https://github.com/RsyncProject/rsync/blob/master/NEWS.md">NEWS file from the git repository</a> to see if what
you're seeing has already been handled in the version under development.
<li> It is also helpful to search the bug reports at the
<a href="https://github.com/RsyncProject/rsync/issues?q=is%3Aissue">GitHub issues tracker</a>
to see if the problem is already known.
<li> See also the <a href="issues.html">issues and debugging</a> page to
help you figure out if what you're seeing is a known bug and perhaps to
help diagnose what is going wrong.
<li> Discuss the bug on the
<a href="https://lists.samba.org/mailman/listinfo/rsync">rsync mailing list</a>
(which is at <tt>rsync@lists.samba.org</tt>) to help you figure out if what
you're seeing is really a bug or a mistake.
<li>There are several patches for features that are under consideration that
can be found in the <a href="https://github.com/RsyncProject/rsync-patches">rsync-patches repo</a>.
<li> If you haven't already done so, please take a couple of minutes to read Simon Tatham's
<a href="https://www.chiark.greenend.org.uk/~sgtatham/bugs.html">advice on how to report bugs</a>.
</ul>
<p> To report a bug or make suggestions, use one of these methods:
<ul>
<li> The mailing list (mentioned above) is a good resource for discussing
bugs and suggesting new features. It accepts patches (typically as MIME
attachments), but for fixes is often easier to attach a patch to an
appropriate GitHub issue report or use a pull request. Note that there is
no mandate to use pull requests for patches, as that can be a pretty high
bar of git know-how that not everyone needs to be familiar with.
<li> If you'd like to see a bug-report or feature-request get officially noted,
<a href="https://github.com/RsyncProject/rsync/issues">create an issue on GitHub</a>
(this does require that you have created a GitHub account). If you want to
stay abreast of what's going on with the issues, make use of the GitHub
subscriptions to pick and choose what kind of notifications you want to
receive (e.g. just a single issue, all issues, all rsync activity, etc.).
<li>For security issues please send email
to <a href="mailto:rsync.project@gmail.com">rsync.project@gmail.com</a>
with details of the issue
</ul>
<p> Thanks for helping out!
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync bug-tracking</TITLE>
</HEAD>
<meta http-equiv="refresh" content="0;URL='https://rsync.samba.org/bug-tracking.html'" />

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync bug-tracking</TITLE>
</HEAD>
<meta http-equiv="refresh" content="0;URL='https://rsync.samba.org/bug-tracking.html'" />

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#!/usr/bin/perl
use strict;
while (<>) {
s/&/&amp;/g;
s/</&lt;/g;
s/>/&gt;/g;
s/ /<hr>/;
s#(&lt;)(https?:.*?)(&gt;)#$1<a href="$2">$2</a>$3#g;
print $_;
}

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<HTML><HEAD>
<TITLE>DST change and date comparisons</TITLE>
</HEAD><BODY>
<p><small><i>J.W. Schultz wrote the following text in a
<a href="http://www.cygwin.com/ml/cygwin/2003-10/msg00995.html">post</a>
to the cygwin mailing list.&nbsp; It has been slightly edited and beautified
for inclusion here.</i></small>
<h1>How the DST Change can adversely affect FAT filesystems</h1>
<p>
The vernal and autumnal transitions to and from daylight-savings
time have important implications
for those with Microsoft systems and use utilities that
compare file timestamps on different filesystem types or
with filesystems on other operating systems that can lead to
a problem in how the file's date is handled.
This problem lies in the way FAT filesystems stores
timestamps and how Windows converts between local time and
UTC.
<h2>Background</h2>
<p>
In UNIX and UNIX-like systems (such as Linux) file timestamps
are stored in UTC (universal time) and are only converted to
local-time by user-space programs for display purposes.&nbsp; At
the system call level all time values are in UTC and
utilities that compare timestamps do so in UTC.&nbsp; Also, the
standard UTC-&gt;local and local-&gt;UTC conversion functions are
aware of DST and conversions reflect this so that if a
timestamp was recorded during ST it will be converted using
the ST offset even when the current system time is DST.
<p>
In Windows things are not so simple.&nbsp; Windows operates in
local-time.&nbsp; Timestamps in the various FAT derived
filesystems are stored in local-time.&nbsp; Timestamps in NTFS
filesystems are stored in UTC.&nbsp; This inconsistency is
further complicated by the fact that the conversion routines
used are not DST aware.&nbsp; Instead of being DST aware the
system has a fixed offset to convert between local-time and
UTC regardless of the date in the timestamp.&nbsp; This fixed
offset is calculated at boot time and only changed when
systems transition to or from DST.&nbsp; As a result the apparent
modification time of a file on NTFS as reported in a windows
utility will change by one hour when reported in local-time
and FAT based files when reported in UTC.
<p>
The difficulty that this produces is that any utilities that
compare timestamps between FAT and NTFS filesystems or
between Windows and other platforms will view files that
have not changed as having a different modified time.&nbsp; Among other things
this will affect rsync, rdiff, unison, wget, and make.&nbsp; However,
for the purposes of this document, we will only discuss rsync.
<p>
With the reduced cost of hard disks many newer backup
systems are using hard disk based storage and take advantage
of timestamp comparison to detect file changes for the sake
of efficiency.&nbsp; Rsync is probably premier in this role and
is used by a fair number of free and even commercial backup
systems as well as being the basis for many home-brew backup
solutions.
<p>
With rsync and similar systems the effect of this is that
every file will appear to have been changed.&nbsp; The result is
any space savings associated with linking (--link-dest) or
with decremental backup approaches (--compare-dest and
--backup-dir) will be defeated.&nbsp; Perhaps worse, because
every file will appear to have changed the time required to
do a backup or a non-backup rsync will be much longer than
normal.&nbsp; In some cases backups that normally complete in
less than one hour can take several days.
<p>
So what can be done about it? Several things, there are
ways to merely mitigate the problem, to correct it and finally
to prevent the problem entirely.
<h2>Mitigation</h2>
<p>
Rsync has a --modify-window option.&nbsp; Many of you already use
--modify-window=1 to cope with the fact that windows often
stores timestamps with a two second resolution.&nbsp; Using a
--modify-window=3601 will cause rsync to ignore timestamp
differences of up to one hour.
<p>
This if often not particularly dangerous because a file would have to
be changed, synced and changed again without changing size
within a single hour and have no subsequent changes for this copy
to miss a file change.&nbsp; However, for some systems any such risk is
unacceptable, so other solutions are needed.
<h2>Correcting the Timestamps</h2>
<p>
There are two ways to correct.
<p>For the first run after the time change, you can run rsync with the
--checksum option in order to ensure that only files that have a changed
checksum get transferred, and update the modified time on all unchanged
files.&nbsp; This option has the drawback that it increases disk I/O by
a large amount on both the sending and receiving side, slowing down the
copy.
<p>
The other way to correct things is to change the timestamps
on the files on the backup server before doing a copy after a
time change has occurred.
<p>
Included here is an example perl script that will change the
timestamps of files in a list on standard-input.&nbsp; Whether
you use a positive or negative shift will depend on which
end you decide to adjust.
<p>
This is an example of how to use the script:
<blockquote><pre>
touch -d '01:00 13-apr-03' /tmp/cmpfile
find . -type f ! -newer /tmp/cmpfile | shifttime.pl 3600
</pre></blockquote>
<hr>
<pre>
#!/usr/bin/perl
use strict;
my $offset = shift() + 0;
die &quot;Usage: $0 OFFSET_SECONDS\n&quot; unless $offset;
while (&lt;&gt;) {
chomp;
my $mtime = (stat $_)[9];
next unless $mtime;
$mtime += $offset;
utime $mtime, $mtime, $_;
}
</pre>
<hr>
<h2>Prevention</h2>
<p>
To prevent the problem in the first place you need to
prevent changing to DST.&nbsp; This can be done by either running
the windows system in UTC, by disabling DST and changing
the system time manually twice each year, or by avoiding the use
of the FAT filesystem (perhaps by switching to a different OS).
<h2>Notes and References</h2>
<p>
Here are some references that Wayne Piekarski collected
while researching this problem.&nbsp; They contain a lot of
information about the ways that Windows deals with
timestamps on NTFS and FAT filesystems.
<p>
<a href="http://optics.ph.unimelb.edu.au/help/rsync/rsync_pc1.html#gotchas">http://optics.ph.unimelb.edu.au/help/rsync/rsync_pc1.html#gotchas</a></br>
<a href="http://list-archive.xemacs.org/xemacs-nt/199911/msg00130.html">http://list-archive.xemacs.org/xemacs-nt/199911/msg00130.html</a></br>
<a href="http://p2p.wrox.com/archive/c_plus_plus_programming/2001-06/53.asp">http://p2p.wrox.com/archive/c_plus_plus_programming/2001-06/53.asp</a></br>
<a href="http://www.codeproject.com/datetime/dstbugs.asp">http://www.codeproject.com/datetime/dstbugs.asp</a></br>
<a href="http://support.microsoft.com/default.aspx?scid=kb;[LN];158588">http://support.microsoft.com/default.aspx?scid=kb;[LN];158588</a>
<p>
I wish to thank Wayne Piekarski for having copiled the
references and also supplying some additional insights.
<p>
Permission is granted without reservation reprint and
distribute this in whole and in part to any interested
parties.
<p>&mdash;J.W. Schultz

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<!-- This file gets included into the resources and documentation pages -->
<li> A nice tutorial on <a href="https://linuxize.com/post/how-to-setup-passwordless-ssh-login/">setting up ssh to avoid password prompts</a>.
<li> Karsten Thygesen has written a doc on how to setup
<A HREF="http://dslab.lzu.edu.cn:8080/members/wangbj/wangbaojun/howtos/rsync-mirror-HOWTO/">anonymous rsync servers</A>.
<li> Anthony Wesley has written a doc on
<A HREF="/win95.txt">how to build rsync for Windows95</A>.
<li> Mike McHenry has written up some info on how to get <a href="nt.html">rsync working under NT</a>.
<li> Michael Holve has written a very useful <a href="http://everythinglinux.org/rsync/">rsync tutorial</a>.
<li> Daniel Teklu has a detailed HOWTO on <a href="http://www.netbits.us/docs/stunnel_rsync.html">rsync and stunnel</a>.

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync documentation</TITLE>
</HEAD>
<!--#include virtual="header.html" -->
<H2 align="center">documentation</H2>
<ul>
<li> An html version of the <a href="https://download.samba.org/pub/rsync/rsync.1"><b>rsync</b>(1) manpage</a>.
<li> An html version of the
<a href="https://download.samba.org/pub/rsync/rsync-ssl.1"><b>rsync-ssl</b>(1) manpage</a>.
<li> An html version of the
<a href="https://download.samba.org/pub/rsync/rsyncd.conf.5"><b>rsyncd.conf</b>(5) manpage</a>.
<li> An html version of the
<a href="https://download.samba.org/pub/rsync/rrsync.1"><b>rrsync</b>(1) manpage</a>
<li> The <a href="FAQ.html">FAQ</a> (frequently asked questions list).
<!--#include virtual="doc-resources.html" -->
<!--
<li>Cross-referenced
<a href="doxygen/head/files.html">rsync source code</a> produced by
<a href="http://doxygen.org/">Doxygen</a>.
-->
<li> A html version of the original
<a href="tech_report/">rsync technical report</a>.
<li> A copy of Andrew Tridgell's
<a href="http://samba.org/~tridge/phd_thesis.pdf">PhD thesis</a>
(which includes three chapters on rsync).
<li> A nice page on <a href="how-rsync-works.html">how rsync works</a>.
<li> A copy of John Langford's thesis on
<a href="http://www-2.cs.cmu.edu/~jcl/research/mrsync/mrsync.ps">Multiround rsync</a>,
which is not used in rsync, but is interesting none-the-less.
<li>A <a href="http://www.devshed.com/c/a/Administration/File-Synchronization-With-Rsync/">DevShed tutorial on rsync</a>.
<li> <a href="rsync-and-debian/">Notes on rsync and Debian mirrors</a>.
</ul>
<p> <i>(Some of the above items are also listed on the <a href="resources.html">rsync resources page</a>.</i>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html>
<head>
<TITLE>rsync download</TITLE>
</head>
<!--#include virtual="header.html" -->
<h2 align="center">rsync download</h2>
<div style="float: right">
<a href="https://github.com/RsyncProject/rsync/actions">
<img src="badge.svg">
</a></div>
<h2>Source-code releases</h2>
<p>You can grab the latest source code and other related files in a variety of ways:
<ul>
<li><p>The latest version is linked on the <a href="https://rsync.samba.org/">main page</a>.
<li><p>A directory listing of these latest files and various historical release and diff files
are available via <a href="https://download.samba.org/pub/rsync/">this web page</a> and
via <i>anonymous SSL rsync</i> using this command:
<p><code><small>rsync-ssl rsync://download.samba.org/rsyncftp/</small></code></p>
<li><p>You can also get .zip and .tar.gz versions of the various git repo's release
tags via the <a href="https://github.com/RsyncProject/rsync/tags">rsync GitHub tags page</a>
and the associated patches via the
<a href="https://github.com/RsyncProject/rsync-patches/tags">rsync-patches GitHub tags page</a>.
Keep in mind that these git-derived files do NOT come with the extra generated files that are included
in the official release tar files.
<li><p>You can browse the very latest source files, clone the source using git, or download a .zip file of the latest
master branch from <a href="https://github.com/RsyncProject/rsync">rsync's GitHub page</a>.
<li><p>The <a href="https://git.samba.org/?p=rsync.git">Samba git repo</a> is also available,
though it might lag behind the GitHub repo every now and then.
</ul>
Once you have the source, read the <a
href="https://download.samba.org/pub/rsync/INSTALL">INSTALL.md</a> file for
details on some development libraries that you will need to build it.
<h2>The GPG Signing Key</h2>
The GPG signing key that is used to sign the release files is available from the public pgp key-server
network. If you have automatic key-fetching enabled, just running a normal
"gpg&nbsp;--verify" will grab my key automatically.
Or, feel free to grab <a href="https://opencoder.net/WayneDavison.key">the gpp
key for Wayne Davison</a> manually.<p>
From 3.4.0 and later releases will be signed by Andrew
Tridgell. Please fetch the key for andrew@tridgell.net from https://keys.openpgp.org/
<h2>Binaries</h2>
<p>Precompiled binaries are available in most modern OS distributions, so
you should first check if you can install an rsync package via your
standard package-install tools for your OS.
<h3>Ubuntu</h3>
<p>The rsync project maintains a Launchpad PPA that tracks upstream stable
releases for the currently supported Ubuntu series (jammy 22.04 LTS,
noble 24.04 LTS, questing 25.10, resolute 26.04 LTS). This is the
fastest way to get the latest upstream rsync on Ubuntu without waiting
for the distro to update its packaged version:
<p><code><small>sudo add-apt-repository ppa:rsyncproject/rsync<br>
sudo apt update &amp;&amp; sudo apt install rsync</small></code>
<p>See the <a href="https://launchpad.net/~rsyncproject/+archive/ubuntu/rsync">PPA page on Launchpad</a>
for build status across architectures.
<p>The <a href="https://github.com/RsyncProject/rsync/actions">GitHub Actions
page</a> has build events that each generate a few binary artifact zip files
(just click through via the build's title to see them). The actions page is
also linked via the various green build-status icons on the web pages here.
These builds use the newest libraries, such as xxhash checksums and zstd
compression, and are dynamically linked, so you may need to install some
official library packages for your distribution. If you're curious how the
build was done, you can look at the build rules in the "Workflow file" tab.
See the <a href="https://download.samba.org/pub/rsync/INSTALL">INSTALL.md</a>
file for some package name hints, though you can use the non-devel versions of
the various lib packages and ignore the gcc/autoconf/awk packages.
<p>There are also packages available from some <b>3rd-parties</b> (note that we
cannot vouch for 3rd parties, so use a source that you trust):
<ul>
<li><p><a href="https://www.cygwin.com/">Cygwin</a> is a Posix runtime for MS
Windows that includes rsync among their many packages.</p></li>
<li><p><a href="https://www.itefix.net/cwrsync">cwRsync</a> is a native
packaging of rsync for MS Windows (they appear to only provide paid releases,
though).</p></li>
</ul>
<h2>Git source vs Release files</h2>
The release tar files come with a few generated files that are not checked in to git.
These mainly include the man pages and the configure related files. To make use of
the git-derived files you will need autoconf, autoheader, and a version of python3
that has the commonmark lib (OR cmarkgfm). If you have trouble with setting up the
those required files, you can try running "./prepare-source fetchgen" to grab the
very latest generated files that were created from the latest commit into the master
branch.
<p> <b>Note:</b> Since the source repository is a work in progress it may, at
times, not compile or fail in various ways, though it is usually pretty good.
<h2>Source repository patches</h2>
<p>There are also various patch files in the "rsync-patches" repository that
represent either some work-in-progress features or features that are considered
to be a little too fringe-interest for the main release. See the github link
above for how to look around at what is available, or snag a release tar file.
The maintainer like to put the rsync-patches dir into his rsync checkout as a
directory named "patches" and has some helper scripts for how to use local git
branches to test and update the diffs.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync examples</TITLE>
</HEAD>
<!--#include virtual="header.html" -->
<H2 align="center">rsync examples</H2>
If you have an interesting example of how you use rsync then please
submit it to the
<A HREF="mailto:rsync-bugs@samba.org">rsync-bugs@samba.org</A>
for inclusion on this page.
<h2>backup to a central backup server with 7 day incremental</h2>
<pre><small>
<!--#include virtual="backup.txt" -->
</small></pre>
<H2>backup to a spare disk</H2>
<pre><small>
<!--#include virtual="horus.txt" -->
</small></pre>
<H2>mirroring vger CVS tree</H2>
<pre><small>
<!--#include virtual="vger.txt" -->
</small></pre>
<H2>automated backup at home</H2>
<pre><small>
<!--#include virtual="susan.txt" -->
</small></pre>
<H2>Fancy footwork with remote file lists</H2>
<pre><small>
One little known feature of rsync is the fact that when run over a
remote shell (such as rsh or ssh) you can give any shell command as
the remote file list. The shell command is expanded by your remote
shell before rsync is called. For example, see if you can work out
what this does:
rsync -avR remote:'`find /home -name "*.[ch]"`' /tmp/
note that that is backquotes enclosed by quotes (some browsers don't
show that correctly).
</small></pre>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync features</TITLE>
</HEAD>
<!--#include virtual="header.html" -->
<H2 align="center">rsync features</H2>
rsync is a file transfer program for Unix systems. rsync uses the
"rsync algorithm" which provides a very fast method for bringing
remote files into sync. It does this by sending just the differences
in the files across the link, without requiring that both sets of
files are present at one of the ends of the link beforehand. <p>
Some features of rsync include
<ul>
<li> can update whole directory trees and filesystems
<li> optionally preserves symbolic links, hard links, file ownership,
permissions, devices and times
<li> requires no special privileges to install
<li> internal pipelining reduces latency for multiple files
<li> can use rsh, ssh or direct sockets as the transport
<li> supports <A HREF="http://dslab.lzu.edu.cn:8080/members/wangbj/wangbaojun/howtos/rsync-mirror-HOWTO/rsync-mirroring02.html">anonymous rsync</A> which is ideal for mirroring
</ul>
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P /badge.svg
H /.git/
H /.gitignore
H /bin/
H /upload/
P /USE_THE_GIT_rsync-web_REPO_NOW
H /filt
H *.swp
- /netware/
- /pre-change
- /rsync-and-debian/
- /index.html-*
- *~

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync search</TITLE>
</HEAD>
<!--#include virtual="header.html" -->
<H2 align="center">Search the rsync web pages</H2>
<p>Searching samba.org will find results in the main web pages and in the
archived mailing-list pages too.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync firewall tunneling</TITLE>
</HEAD>
<!--#include virtual="header.html" -->
<H2 align="center">Using rsync through a firewall</H2>
<p>If you have a setup where there is no way to directly connect two
systems for an rsync transfer, there are several ways to get a firewall
system to act as an intermediary in the transfer.
<p>This first method should work for any remote-shell (e.g. ssh, rsh, etc).
The other methods are all targeted at ssh (which has a lot of flexibility
in making a tunneled connection possible).
<h4>Method 1 -- should work with any remote-shell</h4>
<p>Use your remote shell (e.g. ssh) to access the middle system and have it
use a remote shell to hop over to the actual target system.
<p>To effect this extra hop, you'll need to make sure that the remote-shell
connection from the middle system to the target system does not involve any
tty-based user interaction (such as prompting for a password) because there
is no way for the middle system to access the local user's tty.
<p>One way that should work for all remote-shell programs is to enable host-based
authentication, which would allow all connections from the middle system to
the target system to succeed (when the username remains the same).
However, this may not be a desirable setup.
<p>A better method that works with ssh (and is very safe) is to setup an ssh
key (see the ssh-keygen manpage) and ensure that ssh-agent forwarding is turned
on in your ssh client config (e.g. "ForwardAgent&nbsp;yes"). You would put
the public version of your key onto the middle and target systems (in the
~/.ssh/authorized_keys file), and the private key on your local system (which
I recommend you encrypt). With this setup, a series of ssh connections that
starts from the system where your private key is available will auto-authorize
(after a pass-phrase prompt on the first system if your key is encrypted).
See also ssh-agent for a way to keep a public key unlocked in memory for an
extended time, and the keychain project for a way to manage a system-wide,
per-user ssh-agent.
<p>To test that you have things setup right, first test a series of
remote-shell connections outside of rsync. A command such as the following
should work without issuing multiple prompts (use the appropriate remote-shell
and the substitute the real hostnames for "middle" and "target", of course):
<blockquote><pre>ssh middle ssh target uptime</pre></blockquote>
<p>If you get a password/passphrase prompt to get into the first ("middle")
system that's fine, but the extra hop needs to occur without any extra user
interaction.
<p>Once that's done, you can do an rsync copy like this:
<blockquote><pre>rsync -av -e "ssh middle ssh" target:/src/ /dest/</pre></blockquote>
<h4>Method 2 -- requires ssh and nc (netcat)</h4>
<p>Assuming you're using ssh as your remote shell, you can configure ssh to
use a proxy command to get to the remote host you're interested in reaching.
Doing this will allow the multi-hop connection to work with rsync, even if
both hosts prompt for a password -- this is because both ssh connections
originate from the localhost, and thus both instances of ssh have access to
the local tty to use for an out-of-band password prompt.
<p>Here is an example config for your ~/.ssh/config file (substitute "target",
"target_user", and "middle" as appropriate):
<blockquote><pre>Host target
ProxyCommand nohup ssh middle nc -w1 %h %p
User target_user
</pre></blockquote>
<p>This proxy setup uses "ssh" to login to the firewall system ("middle") and
uses "nc" (netcat) to connect to the target host ("target") using the default
port number. The use of "nohup" silences a warning at the end of the run, and
the "-w1" option tells nc to shut down when the connection closes.
<p>With this done, you can run a normal-looking rsync command to "target" that
will run the proxy command to get through the firewall system:
<blockquote><pre>rsync -av /src/ target:/dest/</pre></blockquote>
<h4>Method 3 -- an alternate ssh method for those without nc (netcat)</h4>
<p>Assuming you're using ssh as your remote shell, you can configure ssh to
forward a local port through your middle system to the ssh port (22) on the
target system. This method does not require the use of nc (it uses only
ssh to effect the extra hop), but otherwise it is similar to, but slightly
less convenient than, method 2.
<p>The first thing we need is an ssh configuration that will allow us to
connect to the forwarded port as if we were connecting to the target
system, and we need ssh to know what we're doing so that it doesn't
complain about the host keys being wrong. We can do this by adding this
section to your ~/.ssh/config file (substitute "target" and "target_user"
as appropriate, but leave "localhost" unchanged):
<blockquote><pre>Host target
HostName localhost
Port 2222
HostKeyAlias target
User target_user
</pre></blockquote>
<p>Next, we need to enable the port forwarding:
<blockquote><pre>ssh -fN -l middle_user -L 2222:target:22 middle</pre></blockquote>
<p>What this does is cause a connection to port 2222 on the local system to
get tunneled to the middle system and then turn into a connection to the
target system's port 22. The -N option tells ssh not to start a shell on
the remote system, which works with modern ssh versions (you can run a
sleep command if -N doesn't work). The -f option tells ssh to put the
command in the background after any password/passphrase prompts.
<p>With this done, you could run a normal-looking rsync command to "target"
that would use a connection to port 2222 on localhost automatically:
<blockquote><pre>rsync -av target:/src/ /dest/</pre></blockquote>
<p><b>Note:</b> starting an ssh tunnel allows anyone on the source system
to connect to the localhost port 2222, not just you, but they'd still need
to be able to login to the target system using their own credentials.
<h4>Method 4 -- for using rsync in daemon-mode (requires nc)</h4>
<p>Install and configure an rsync daemon on the target and use ssh and nc
to send the socket data to the remote host.
<blockquote><pre>RSYNC_CONNECT_PROG='ssh -l middle_user middle nc %H 873' \
rsync daemonuser@target::module/src/ /dest/</pre></blockquote>
<p>(You can also export that variable into your environment if you want to
perform a series of daemon rsync commands through the same middle host.)
<p>This command takes advantage of the RSYNC_CONNECT_PROG environment
variable, which tells rsync to pipe its socket data to an external program
in place of making a direct socket connection. The command specifed above
uses ssh to run the nc (netcat) command on the middle host, which forwards
all socket data to port 873 on the target host (%H). The "%H" will be
substituted with the target host from the rsync command as long as you're
running rsync 3.0.0 or newer (you'll need to replace %H with the actual
target hostname for earlier rsync versions, which makes the hostname
specified in the rsync command superfluous).
<h4>Method 5 -- for using rsync in daemon-mode (for those without nc)</h4>
<p>Install and configure an rsync daemon on the target and use an ssh
tunnel to reach the rsync sever. This is similar to method 3, but it
tunnels the daemon port for those that prefer to use an rsync daemon.
<p>(Note that this method also works to tunnel a socket connection
directly to a destination system if you use "localhost" as the target
hostname and your destination system's name as the middle hostname.)
<p>Installing the rsync daemon is beyond the scope of this document, but
see the rsyncd.conf manpage for more information. Keep in mind that you
don't need to be root to run an rsync daemon as long as you don't use a
protected port.
<p>Once your rsync daemon is up and running, you build an ssh tunnel
through your middle system like this:
<blockquote><pre>ssh -fN -l middle_user -L 8873:target:873 middle</pre></blockquote>
<p>What this does is cause a connection to port 8873 on the local system to
turn into a connection from the middle system to the target system on port
873. (Port 873 is the normal port for an rsync daemon.) The -N option
tells ssh not to start a shell on the remote system, which works with
modern ssh versions (you can run a sleep command if -N doesn't work). The
-f option tells ssh to put the command in the background after any
password/passphrase prompts.
<p>Now when an rsync command is executed with a daemon-mode command-line
syntax to the local system, the conversation is directed to the target
system. For example:
<blockquote><pre>rsync -av --port 8873 localhost::module/src/ dest/
rsync -av rsync://localhost:8873/module/src/ dest/</pre></blockquote>
<p><b>Note:</b> starting an ssh tunnel allows anyone on the source system
to connect to the localhost port 8873, not just you, so you may want to
enable username/password restrictions on your rsync daemon.
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I do local backups on several of my machines using rsync. I have an
extra disk installed that can hold all the contents of the main
disk. I then have a nightly cron job that backs up the main disk to
the backup. This is the script I use on one of those machines.
#!/bin/sh
export PATH=/usr/local/bin:/usr/bin:/bin
LIST="rootfs usr data data2"
for d in $LIST; do
mount /backup/$d
rsync -ax --exclude fstab --delete /$d/ /backup/$d/
umount /backup/$d
done
DAY=`date "+%A"`
rsync -a --delete /usr/local/apache /data2/backups/$DAY
rsync -a --delete /data/solid /data2/backups/$DAY
The first part does the backup on the spare disk. The second part
backs up the critical parts to daily directories. I also backup the
critical parts using a rsync over ssh to a remote machine.

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<html>
<head>
<title>How Rsync Works</title>
</head>
<body>
<h1 align="center">How Rsync Works<br>A Practical Overview</h1>
<h2 align="center">Foreword</h2>
<p>
The original
<a href="http://rsync.samba.org/tech_report/">Rsync technical report</a>
and
Andrew Tridgell's
<a href="http://samba.org/%7Etridge/phd_thesis.pdf">Phd thesis (pdf)</a>
Are both excellent documents for understanding the
theoretical mathematics and some of the mechanics of the rsync algorithm.
Unfortunately they are more about the theory than the
implementation of the rsync utility (hereafter referred to as
Rsync).
<p>
In this document I hope to describe...
<ul>
<li>A non-mathematical overview of the rsync algorithm.
<li>How that algorithm is implemented in the rsync utility.
<li>The protocol, in general terms, used by the rsync utility.
<li>The identifiable roles the rsync processes play.
</ul>
<p>
This document be able to serve as a guide for programmers
needing something of an entr&eacute; into the source code but the
primary purpose is to give the reader a foundation from
which he may understand
<ul>
<li>Why rsync behaves as it does.
<li>The limitations of rsync.
<li>Why a requested feature is unsuited to the code-base.
</ul>
<p>
This document describes in general terms the construction
and behaviour of Rsync. In some cases details and exceptions
that would contribute to specific accuracy have
been sacrificed for the sake meeting the broader goals.
<h2 align="center">Processes and Roles</h2>
<p>
When we talk about Rsync we use specific terms to refer to
various processes and their roles in the task performed by
the utility. For effective communication it is important that we
all be speaking the same language; likewise it is important
that we mean the same things when we use certain terms in a
given context. On the rsync mailing list there is often
some confusion with regards to role and processes. For
these reasons I will define a few terms
used in the role and process contexts that will be used henceforth.
<table cellspacing="20"><tr valign="top">
<td>client
</td><td>role
</td><td>
The client initiates the synchronisation.
</td></tr><tr valign="top">
<td>server
</td><td>role
</td><td>
The remote rsync process or system to which the
client connects either within a local transfer, via
a remote shell or via a network socket.
<p>
This is a general term and should not be confused with the daemon.
</td></tr><tr valign="top">
<td>
</td><td>
</td><td bgcolor="#dddddd">
Once the connection between the client and server is established
the distinction between them is superseded by the
sender and receiver roles.
</td></tr><tr valign="top">
<td>daemon
</td><td>Role and process
</td><td>
An Rsync process that awaits connections from
clients. On a certain platform this would be called a
service.
</td></tr><tr valign="top">
<td>remote&nbsp;shell
</td><td>role and set of processes
</td><td>
One or more processes that provide connectivity
between an Rsync client and an Rsync server on a
remote system.
</td></tr><tr valign="top">
<td>sender
</td><td>role and process
</td><td>
The Rsync process that has access to the source
files being synchronised.
</td></tr><tr valign="top">
<td>receiver
</td><td>role and process
</td><td>
As a role the receiver is the destination system.
As a process the receiver is the process that
receives update data and writes it to disk.
</td></tr><tr valign="top">
<td>generator
</td><td>process
</td><td>
The generator process identifies changed files and
manages the file level logic.
</td></tr></table>
<p>
<h2 align="center">Process Startup</h2>
<p>
When an Rsync client is started it will first establish a
connection with a server process. This connection may be
through pipes or over a network socket.
<p>
When Rsync communicates with a remote non-daemon server via
a remote shell the startup method is to fork the remote
shell which will start an Rsync server on the remote system.
Both the Rsync client and server are communicating via pipes
through the remote shell. As far as the rsync processes are
concerned there is no network.
In this mode the rsync options for the server process are
passed on the command-line that is used to start the remote
shell.
<p>
When Rsync is communicating with a daemon it is
communicating directly with a network socket. This is the
only sort of Rsync communication that could be called
network aware.
In this mode the rsync options must be sent over the socket, as
described below.
<p>
At the very start of the communication between the client
and the server, they each send the maximum protocol version
they support to the other side.
Each side then uses the minimum value as the the protocol
level for the transfer.
If this is a daemon-mode connection, rsync options are sent
from the client to the server. Then, the exclude list is
transmitted. From this point onward the
client-server relationship is relevant only with regards
to error and log message delivery.
<p>
Local Rsync jobs (when the source and destination are both on locally
mounted filesystems) are done exactly like a push. The
client, which becomes the sender, forks a server process to
fulfill the receiver role. The client/sender and
server/receiver communicate with each other over pipes.
<h2 align="center">The File List</h2>
The file list includes not only the pathnames but also
ownership, mode, permissions, size and modtime.
If the --checksum option has been specified it also includes
the file checksums.
<p>
The first thing that happens once the startup has completed
is that the sender will create the file list.
While it is being built, each entry is transmitted to the
receiving side in a network-optimised way.
<p>
When this is done, each side sorts the file list lexicographically by path
relative to the base directory of the transfer.
(The exact sorting algorithm varies depending on what protocol
version is in effect for the transfer.)
Once that has happened all references to files
will be done by their index in the file list.
<p>
If necessary the sender follows the file list with id&rarr;name
tables for users and groups which the receiver will use to
do a id&rarr;name&rarr;id translation for every file in the file
list.
<p>
After the file list has been received by the receiver, it
will fork to become the generator and receiver pair
completing the pipeline.
<h2 align="center">The Pipeline</h2>
Rsync is heavily pipelined. This means that it is a set of
processes that communicate in a (largely) unidirectional
way. Once the file list has been shared the pipeline
behaves like this:
<blockquote>
generator &rarr; sender &rarr; receiver
</blockquote>
<p>
The output of the generator is input for the sender and the
output of the sender is input for the receiver.
Each process runs independently and is delayed only when the
pipelines stall or when waiting for disk I/O or CPU resources.
<h2 align="center">The Generator</h2>
<p>
The generator process compares the file list with its local
directory tree. Prior to beginning its primary function, if
--delete has been specified, it will first identify local
files not on the sender and delete them on the receiver.
<p>
The generator will then start walking the file list. Each
file will be checked to see if it can be skipped. In the
most common mode of operation files are not skipped if the
modification time or size differs. If --checksum was
specified a file-level checksum will be created and
compared. Directories, device nodes and symlinks are not
skipped. Missing directories will be created.
<p>
If a file is not to be skipped, any existing version on the
receiving side becomes the "basis file" for the transfer, and is
used as a data source that will help to eliminate matching data
from having to be sent by the sender. To effect this remote
matching of data, block checksums are created for the basis file
and sent to the sender immediately following the file's index
number.
An empty block checksum set is sent for new files and if
--whole-file was specified.
<p>
The block size and, in later versions, the size of the
block checksum are calculated on a per file basis according
to the size of that file.
<h2 align="center">The Sender</h2>
The sender process reads the file index numbers and associated
block checksum sets one at a time from the generator.
<p>
For each file id the generator sends it will store the
block checksums and build a hash index of them for rapid lookup.
<p>
Then the local file is read and a checksum is
generated for the block beginning with the first byte of the
local file. This block checksum is looked for in the
set that was sent by the generator, and if no match is found,
the non-matching byte will be appended to the non-matching data
and the block starting at the next byte will be compared.
This is what
is referred to as the &ldquo;rolling checksum&rdquo;
<p>
If a block checksum match is found it is considered a
matching block and any accumulated non-matching data will be
sent to the receiver followed by the offset and length in
the receiver's file of the matching block and the block
checksum generator will be advanced to the next byte after
the matching block.
<p>
Matching blocks can be identified in this way even if
the blocks are reordered or at different offsets.
This process is the very heart of the rsync algorithm.
<p>
In this way, the sender will give the receiver instructions for
how to reconstruct the source file into a new destination file.
These instructions detail all the matching data that can be
copied from the basis file (if one exists for the transfe),
and includes any raw data that was not available locally.
At the end of each file's processing a whole-file
checksum is sent and the sender proceeds with the next
file.
<p>
Generating the rolling checksums and searching for matches
in the checksum set sent by the generator require a good
deal of CPU power. Of all the rsync processes it is the
sender that is the most CPU intensive.
<h2 align="center">The Receiver</h2>
<p>
The receiver will read from the sender data for each file
identified by the file index number. It will open the local
file (called the basis) and will create a temporary file.
<p>
The receiver will expect to read non-matched data and/or to match
records all in sequence for the final file contents. When
non-matched data is read it will be written to the
temp-file. When a block match record is received the
receiver will seek to the block offset in the basis file
and copy the block to the temp-file. In this way the
temp-file is built from beginning to end.
<p>
The file's checksum is generated as the temp-file is built.
At the end of the file, this checksum is compared with the
file checksum from the sender. If the file checksums do not
match the temp-file is deleted. If the file fails once it
will be reprocessed in a second phase, and if it fails twice
an error is reported.
<p>
After the temp-file has been completed, its ownership and
permissions and modification time are set. It is then
renamed to replace the basis file.
<p>
Copying data from the basis file to the temp-file make the
receiver the most disk intensive of all the rsync processes.
Small files may still be in disk cache mitigating this but
for large files the cache may thrash as the generator has
moved on to other files and there is further latency caused
by the sender. As
data is read possibly at random from one file and written to
another, if the working set is larger than the disk cache,
then what is called a seek storm can occur, further
hurting performance.
<h2 align="center">The Daemon</h2>
The daemon process, like many daemons, forks for every
connection. On startup, it parses the rsyncd.conf file
to determine what modules exist and to set the global options.
<p>
When a connection is received for a defined module the
daemon forks a new child process to handle the connection.
That child process then reads the rsyncd.conf file to set
the options for the requested module, which may chroot to the
module path and may drop setuid and setgid for the
process. After that it will behave just like any other
rsync server process adopting either a sender or receiver
role.
<h2 align="center">The Rsync Protocol</h2>
<p>
A well-designed communications protocol has a number of
characteristics.
<ul>
<li>Everything is sent in well defined packets with
a header and an optional body or data payload.
<li>In each packet's header a type and or command
specified.
<li>Each packet has a definite length.
</ul>
<p>
In addition to these characteristics, protocols have varying degrees of
statefulness, inter-packet independence, human readability,
and the ability to reestablish a disconnected session.
<p>
Rsync's protocol has none of these good characteristics. The data is
transferred as an unbroken stream of bytes. With the
exception of the unmatched file-data, there are no length
specifiers nor counts. Instead the meaning of each byte is
dependent on its context as defined by the protocol level.
<p>
As an example, when the sender is sending the file list it
simply sends each file list entry and terminates the list
with a null byte. Within the file list entries, a bitfield
indicates which fields of the structure to expect and those
that are variable length strings are simply null terminated.
The generator sending file numbers and block checksum sets
works the same way.
<p>
This method of communication works quite well on reliable
connections and it certainly has less data overhead than the
formal protocols. It unfortunately makes the protocol
extremely difficult to document, debug or extend.
Each version of the protocol will have subtle differences on
the wire that can only be anticipated by knowing the exact
protocol version.
<h2 align="center">notes</h2>
This document is a work in progress. The author expects
that it has some glaring oversights and some portions that may be
more confusing than enlightening for some readers. It is
hoped that this could evolve into a useful reference.
<p>
Specific suggestions for improvement are welcome, as would be a
complete rewrite.
</body>
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<TITLE>rsync</TITLE>
<style>
.security { color: red; }
h3 { margin-bottom: 0px; }
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</style>
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<!--#include virtual="header.html" -->
<H2 align="center">Welcome to the rsync web pages</H2>
rsync is an <A HREF="https://www.opensource.org/">open source</A>
utility that provides fast incremental file transfer. rsync is freely
available under the <A HREF="GPL.html">GNU General Public
License</A> and is currently being maintained by
<a href="email:<tridge@samba.org>">Andrew Tridgell</a>.
<p>A full changelog of all the releases, including upcoming releases, is in the
<a href="https://download.samba.org/pub/rsync/NEWS">NEWS file</a>.
<div style="float: right">
<a href="https://github.com/RsyncProject/rsync/actions">
<img src="badge.svg">
</a></div>
<h3>Rsync version 3.4.3 released</h3>
<i class=date>May 20th, 2026</i>
<p>Rsync version 3.4.3 has been released. This is a major security release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.4.3">3.4.3 NEWS</a> for a detailed changelog.
The latest manpages are also available for:<ul>
<li><a href="https://download.samba.org/pub/rsync/rsync.1"><b>rsync</b>(1)</a>
<li><a href="https://download.samba.org/pub/rsync/rsync-ssl.1"><b>rsync-ssl</b>(1)</a>
<li><a href="https://download.samba.org/pub/rsync/rsyncd.conf.5"><b>rsyncd.conf</b>(5)</a>
<li><a href="https://download.samba.org/pub/rsync/rrsync.1"><b>rrsync</b>(1)</a>
</ul>
<p>The source tar is available here:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-3.4.3.tar.gz">rsync-3.4.3.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-3.4.3.tar.gz.asc">signature</a>)</b>,
and the diffs from version 3.4.2 are available here:
<b><a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.4.2-3.4.3.diffs.gz">rsync-3.4.2-3.4.3.diffs.gz</a>
(<a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.4.2-3.4.3.diffs.gz.asc">signature</a>)</b>.
<h3>Rsync version 3.4.2 released</h3>
<i class=date>April 28th, 2026</i>
<p>Rsync version 3.4.2 has been released.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.4.2">3.4.2 NEWS</a> for a detailed changelog.
The latest manpages are also available for:<ul>
<li><a href="https://download.samba.org/pub/rsync/rsync.1"><b>rsync</b>(1)</a>
<li><a href="https://download.samba.org/pub/rsync/rsync-ssl.1"><b>rsync-ssl</b>(1)</a>
<li><a href="https://download.samba.org/pub/rsync/rsyncd.conf.5"><b>rsyncd.conf</b>(5)</a>
<li><a href="https://download.samba.org/pub/rsync/rrsync.1"><b>rrsync</b>(1)</a>
</ul>
<p>The source tar is available here:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-3.4.2.tar.gz">rsync-3.4.2.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-3.4.2.tar.gz.asc">signature</a>)</b>,
and the diffs from version 3.4.1 are available here:
<b><a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.4.1-3.4.2.diffs.gz">rsync-3.4.1-3.4.2.diffs.gz</a>
(<a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.4.1-3.4.2.diffs.gz.asc">signature</a>)</b>.
<h3>Rsync version 3.4.1 released</h3>
<i class=date>January 15th, 2025</i>
<p>Rsync version 3.4.1 has been released.
This is a fix for some regressions in 3.4.0
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.4.1">3.4.1 NEWS</a> for a detailed changelog.
The latest manpages are also available for:<ul>
<li><a href="https://download.samba.org/pub/rsync/rsync.1"><b>rsync</b>(1)</a>
<li><a href="https://download.samba.org/pub/rsync/rsync-ssl.1"><b>rsync-ssl</b>(1)</a>
<li><a href="https://download.samba.org/pub/rsync/rsyncd.conf.5"><b>rsyncd.conf</b>(5)</a>
<li><a href="https://download.samba.org/pub/rsync/rrsync.1"><b>rrsync</b>(1)</a>
</ul>
<p>The source tar is available here:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-3.4.1.tar.gz">rsync-3.4.1.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-3.4.1.tar.gz.asc">signature</a>)</b>,
with a tar file of the "rsync-patches" repository released in a separate file:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.4.1.tar.gz">rsync-patches-3.4.1.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.4.1.tar.gz.asc">signature</a>)</b>,
and the diffs from version 3.4.0 are available here:
<b><a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.4.0-3.4.1.diffs.gz">rsync-3.4.0-3.4.1.diffs.gz</a>
(<a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.4.0-3.4.1.diffs.gz.asc">signature</a>)</b>.
<h3>Rsync version 3.4.0 released</h3>
<i class=date>January 14th, 2025</i>
<p>Rsync version 3.4.0 has been released.
This is a security release, fixing several important security vulnerabilities.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.4.0">3.4.0 NEWS</a> for a detailed changelog.
<p>The source tar is available here:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-3.4.0.tar.gz">rsync-3.4.0.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-3.4.0.tar.gz.asc">signature</a>)</b>,
with a tar file of the "rsync-patches" repository released in a separate file:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.4.0.tar.gz">rsync-patches-3.4.0.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.4.0.tar.gz.asc">signature</a>)</b>,
and the diffs from version 3.3.0 are available here:
<b><a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.3.0-3.4.0.diffs.gz">rsync-3.3.0-3.4.0.diffs.gz</a>
(<a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.3.0-3.4.0.diffs.gz.asc">signature</a>)</b>.
<h3>Rsync version 3.3.0 released</h3>
<i class=date>April 6th, 2024</i>
<p>Rsync version 3.3.0 has been released.
This is a bug-fix release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.3.0">3.3.0 NEWS</a> for a detailed changelog.
<p>The source tar is available here:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-3.3.0.tar.gz">rsync-3.3.0.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-3.3.0.tar.gz.asc">signature</a>)</b>,
with a tar file of the "rsync-patches" repository released in a separate file:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.3.0.tar.gz">rsync-patches-3.3.0.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.3.0.tar.gz.asc">signature</a>)</b>,
and the diffs from version 3.2.2 are available here:
<b><a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.2.7-3.3.0.diffs.gz">rsync-3.2.7-3.3.0.diffs.gz</a>
(<a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.2.7-3.3.0.diffs.gz.asc">signature</a>)</b>.
<p><hr>
<h3>Rsync version 3.2.7 released</h3>
<i class=date>October 20th, 2022</i>
<p>Rsync version 3.2.7 has been released.
This has some new features &amp; fixes, including various bug fixes for arg validation &amp; filter-rule validation.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.2.7">3.2.7 NEWS</a> for a detailed changelog.
<p>The source tar is available here:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-3.2.7.tar.gz">rsync-3.2.7.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-3.2.7.tar.gz.asc">signature</a>)</b>,
with a tar file of the "rsync-patches" repository released in a separate file:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.2.7.tar.gz">rsync-patches-3.2.7.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.2.7.tar.gz.asc">signature</a>)</b>,
and the diffs from version 3.2.2 are available here:
<b><a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.2.6-3.2.7.diffs.gz">rsync-3.2.6-3.2.7.diffs.gz</a>
(<a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.2.6-3.2.7.diffs.gz.asc">signature</a>)</b>.
<p><hr>
<h3>Rsync version 3.2.6 released</h3>
<i class=date>September 9th, 2022</i>
<p>Rsync version 3.2.6 has been released.
This is a bug-fix release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.2.6">3.2.6 NEWS</a> for a detailed changelog.
<p>The source tar is available here:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-3.2.6.tar.gz">rsync-3.2.6.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-3.2.6.tar.gz.asc">signature</a>)</b>,
with a tar file of the "rsync-patches" repository released in a separate file:
<b><a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.2.6.tar.gz">rsync-patches-3.2.6.tar.gz</a>
(<a href="https://download.samba.org/pub/rsync/src/rsync-patches-3.2.6.tar.gz.asc">signature</a>)</b>,
and the diffs from version 3.2.2 are available here:
<b><a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.2.5-3.2.6.diffs.gz">rsync-3.2.5-3.2.6.diffs.gz</a>
(<a href="https://download.samba.org/pub/rsync/src-diffs/rsync-3.2.5-3.2.6.diffs.gz.asc">signature</a>)</b>.
<p><hr>
<h3>Rsync version 3.2.5 released</h3>
<i class=date>August 14th, 2022</i>
<p>Rsync version 3.2.5 has been released.
This is a bug-fix and <a href="security.html" class=security>security</a> release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.2.5">3.2.5 NEWS</a> for a detailed changelog.
<p><hr>
<h3>Rsync version 3.2.4 released</h3>
<i class=date>April 15th, 2022</i>
<p>Rsync version 3.2.4 has been released.
Another typical release with both bug fixes and some enhancements. It also contains a
<a href="security.html#s3_2_4" class=security>security fix</a>
for the bundled zlib 1.2.8, which may or may not be used in your particular build configuration.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.2.4">3.2.4 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.2.3 released</h3>
<i class=date>August 6th, 2020</i>
<p>Rsync version 3.2.3 has been released.
It contains a smattering of bug fixes and various enhancements.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.2.3">3.2.3 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.2.2 released</h3>
<i class=date>July 4th, 2020</i>
<p>Rsync version 3.2.2 has been released.
This is a few more portability fixes, some improvements to the newest features, and some
other simple changes. Hopefully this will be the last of these recent touch-up releases.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.2.2">3.2.2 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.2.1 released</h3>
<i class=date>June 22th, 2020</i>
<p>Rsync version 3.2.1 has been released.
This is mainly a few fixes for some release issues and portability problems.
There's also a couple new features, just for good measure.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.2.1">3.2.1 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.2.0 released</h3>
<i class=date>June 19th, 2020</i>
<p>Rsync version 3.2.0 has been released.
This release has a good number of a few new features and various bug fixes.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.2.0">3.2.0 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.1.3 released</h3>
<i class=date>January 28th, 2018</i>
<p>Rsync version 3.1.3 has been released.
This release has a
<a href="security.html#s3_1_3" class=security>couple security fixes</a>,
a few new features, and various bug fixes.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.1.3">3.1.3 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.1.2 released</h3>
<i class=date>December 21st, 2015</i>
<p>Rsync version 3.1.2 has been released. This is a bug-fix release.
It includes a <a href="security.html#s3_1_2" class=security>security fix</a>
for a transfer from a sender that you don't fully trust.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.1.2">3.1.2 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.1.1 released</h3>
<i class=date>June 22nd, 2014</i>
<p>Rsync version 3.1.1 has been released. This is a bug-fix release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.1.1">3.1.1 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.1.0 released</h3>
<i class=date>September 28th, 2013</i>
<p>Rsync version 3.1.0 has been released. This is a
feature release that improves performance, provides several new options, and
fixes a few bugs along the way.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.1.0">3.1.0 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.9 released</h3>
<i class=date>September 23th, 2011</i>
<p>Rsync version 3.0.9 has been released. This is a bug-fix release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.9">3.0.9 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.8 released</h3>
<i class=date>March 26th, 2011</i>
<p>Rsync version 3.0.8 has been released. This is a bug-fix release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.8">3.0.8 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.7 released</h3>
<i class=date>December 31th, 2009</i>
<p>Rsync version 3.0.7 has been released. This is a bug-fix release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.7">3.0.7 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.6 released</h3>
<i class=date>May 8th, 2009</i>
<p>Rsync version 3.0.6 has been released. This is a bug-fix release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.6">3.0.6 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.5 released</h3>
<i class=date>December 28th, 2008</i>
<p>Rsync version 3.0.5 has been released. This is another bug-fix release.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.5">3.0.5 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.4 released</h3>
<i class=date>September 6th, 2008</i>
<p>Rsync version 3.0.4 has been released. This is a bug-fix release with the
only enhancement being the adding of a way to interact with an
overly-restrictive server that refuses rsync's behind-the-scenes use of the -e
option.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.4">3.0.4 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.3 released</h3>
<i class=date>June 29th, 2008</i>
<p>Rsync version 3.0.3 has been released. This is a bug-fix release that has
no new features (though it does have one new script in the support directory).
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.3">3.0.3 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.2 released</h3>
<i class=date>April 8th, 2008</i>
<p>Rsync version 3.0.2 has been released. This is a
<a href="security.html#s3_0_2" class=security>security release</a>
that fixes a potential buffer-overflow issue.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.2">3.0.2 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.1 released</h3>
<i class=date>April 3rd, 2008</i>
<p>Rsync version 3.0.1 has been released. This is a bug-fix release, which also
includes fixes/improvements for several issues in the daemon-exclude code.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.1">3.0.1 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 3.0.0 released</h3>
<i class=date>March 1st, 2008</i>
<p>Rsync version 3.0.0 is finally here! This is a feature release that
also includes quite a few bug fixes.
<p>The 3.0.0 version number is such a large bump up from 2.6.9 due to the
addition of an
incremental recursion scan (which helps a lot with large transfers) and the
official arrival of several other new features, including ACL support, extended
attribute support, filename character-set conversion, etc.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#3.0.0">3.0.0 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 2.6.9 released</h3>
<i class=date>November 6th, 2006</i>
<p>Rsync version 2.6.9 has been released. This is primarily a bug-fix
release with a few minor new features.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#2.6.9">2.6.9 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync version 2.6.8 released</h3>
<i class=date>April 22th, 2006</i>
<p>Rsync version 2.6.8 has been released. This is a bug-fix release that
primarily addresses an exclude problem that affected the --relative option,
but also includes a <a href="security.html#s2_6_8" class=security>security fix</a> for
the xattrs.diff patch (which is not an
official part of rsync, but some packagers include it in their release).
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#2.6.8">2.6.8 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync 2.6.7 released</h3>
<i class=date>March 11th, 2006</i>
<p>Rsync version 2.6.7 has been released. This release has both several new
features and the usual accompaniment of bug fixes.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#2.6.7">2.6.7 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync 2.6.6 released</h3>
<i class=date>July 28th, 2005</i>
<p>Rsync version 2.6.6 has been released. This release is a bug-fix release
which contains a <a href="security.html#s2_6_6" class=security>security fix</a>
to handle a null-pointer bug that turned up in rsync's version of zlib
1.1.4 (this is not the recent zlib 1.2.2 security fix, which did not
affect rsync) and to squash a few other minor bugs. To deal with the
zlib issue, rsync has been upgraded to include zlib 1.2.3.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#2.6.6">2.6.6 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync 2.6.5 released</h3>
<i class=date>June 1st, 2005</i>
<p>Rsync version 2.6.5 has been released. This release is primarily a bug-fix
release to squash some annoying problems that made it into the (feature-filled)
release of 2.6.4, plus a few minor enhancements.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#2.6.5">2.6.5 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync 2.6.4 released</h3>
<i class=date>March 30th, 2005</i>
<p>Rsync version 2.6.4 has been released. This release combines quite a
few new features, some improved delete efficiency, and the usual array of
bug fixes.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#2.6.4">2.6.4 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync 2.6.3 released</h3>
<i class=date>September 30th, 2004</i>
<p>Rsync version 2.6.3 has been released. It contains several new features
and quite a few bug fixes, including a <a href="security.html#s2_6_3" class=security>security
fix</a> for a patch-sanitizing bug in the daemon code.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#2.6.3">2.6.3 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync 2.6.2 released</h3>
<i class=date>April 30th, 2004</i>
<p>Rsync version 2.6.2 has been released. It is a bug-fix release that mainly
fixes <b>a bug with the --relative option (-R) in 2.6.1</b>
that could cause files to be transferred incorrectly. This only affected a
source right at the root of the filesystem, such as "/" or "/*" (if you
first "cd /" and then copy from ".", it would not tickle the bug).
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#2.6.2">2.6.2 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>Rsync 2.6.1 released</h3>
<i class=date>April 26th, 2004</i>
<p>Rsync version 2.6.1 has been released. It is primarily a performance
release that requires less memory to run, makes fewer write calls to the socket
(lowering the system CPU time), does less string copying (lowering the user CPU
time), and also reduces the amount of data that is transmitted over the wire.
There have also been quite a few bug fixes, including a
<a href="security.html#s2_6_1" class=security>security fix</a> for a daemon problem when chroot
is not enabled. See the
<a href="https://download.samba.org/pub/rsync/NEWS#2.6.1">2.6.1 NEWS</a>
for a detailed changelog.
<p><hr>
<h3>One Cygwin hang-problem resolved</h3>
<p>The problem with rsync hanging at the end of the transfer on
<a href="https://www.cygwin.com/">Cygwin</a> had been previously traced to a
signal-handling bug in their compatibility DLL. This bug appears to now be
fixed in DLL version 1.5.7-1, and Cygwin users are reporting that upgrading the
DLL removes the hang-at-end-of-transfer problem for their existing rsync executable.
(Note that this doesn't solve a hang that some folks see in the middle of a
transfer -- using daemon mode instead of ssh can work around that one.)
<p><hr>
<h3>Rsync 2.6.0 released</h3>
<i class=date>January 1st, 2004</i>
<P> Two important things to note in the new release:
<ol>
<li>The default remote shell is now "ssh" unless you tell configure you want to
make something else the default.
<li>Some bug fixes in the include/exclude code, while making things work
properly, have resulted in some user-visible changes for certain wildcard
strings. Read the BUG FIXES section in the
<a href="https://download.samba.org/pub/rsync/NEWS#2.6.0">2.6.0 NEWS</a>
to see if any of these changes apply to you.
(Most people should be unaffected.)
</ol>
<p>One other item of note is that the oft-requested option "--files-from" is now
available. This option lets you specify a list of files to transfer, and can
be much more efficient than a recursive descent using include/exclude
statements (if you know in advance what files you want to transfer). The list
of files can come from either side of the connection, so it is possible for a
server to provide the file-list that lets someone grab a server-specified set of
files, for example. See the <a href="https://download.samba.org/pub/rsync/rsync.1">rsync man page</a>
for more details.
<p>See the <a href="https://download.samba.org/pub/rsync/NEWS#2.6.0">2.6.0 NEWS</a>
for a detailed changelog.
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<TITLE>rsync current issues</TITLE>
<style>
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font-weight: bold;
white-space: pre;
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<H2 align="center">current issues and debugging</H2>
<ol>
<li><p><b>Q:</b>
Rsync appears hung -- what should I do?
<p><b>A:</b>
When experiencing a hang or freeze <b>please</b> gather the following
information before killing the rsync process:
<ul>
<li> The state of the send/receive queues shown with netstat on the two ends.
<li> The system call that each of the 3 processes is stuck in (use truss on
solaris, strace on Linux, etc.).
</ul>
<p>Try telling rsync on both sides of the connection to send messages to
stderr, which might make the failure message visible. i.e., use:
<blockquote<pre><code>
--msgs2stderr -M--msgs2stderr
</code></pre></blockquote>
<p>That alone might get rsync to stop hanging. Also, if you're using more than
one <code>--verbose</code> (<code>-v</code>) option then I have 2 simple words
for you: stop it. If you need more info on what rsync is changing, using the
<code>--itemize-changes</code> option (<code>-i</code>) and repeat it if you
need to see unchanged files. This is a much better way to go that doesn't fill
up the communication pipeline with a large quanity of debug messages.
<p>See the "rsync-debug" script below for an example of how to grab strace
information from the remote rsync process(es). If you need help, send email to
the mailing list.
<li><p><b>Q:</b>
Why does my chrooted rsync daemon crash when doing an LDAP lookup for a user or
group?
<p><b>A:</b>
There is a bug in some LDAP libraries (e.g. Fedora Core 3) where it crashes
when someone looks up a name from inside a chrooted process (one that does not
contain copies of the libraries to perform the lookup). This is a bug that the
LDAP libraries will need to fix, and is out of rsync's hands. You can work
around the problem by using the <code>--numeric-ids</code> option, turning
chroot off, or getting rid of LDAP lookups.
<li><p><b>Q:</b>
Why does my transfer die with something like the following error?
<blockquote><pre><code>
rsync: error writing 4 unbuffered bytes - exiting: Broken pipe
rsync error: error in rsync protocol data stream (code 12) at io.c(463)
</code></pre></blockquote>
<p>or
<blockquote><pre><code>
rsync: connection unexpectedly closed (24 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(342)
</code></pre></blockquote>
<p><b>A:</b>
This error tells you that the local rsync was trying to talk to the remote
rsync, but the connection to that rsync is now gone. The thing you must
figure out is <b>why</b>, and that can involve some investigative work.
<p>It is a good idea use the <code>--msgs2stderr</code> options mentioned at
the top of this page to get rsync to output any errors it encounters to stderr
instead of trying to write them down the failing pipeline.
<p>If the connection is via ssh (or other remote-shell command) then you should
run some tests to make sure that you can actually run the remote rsync and that
your shell isn't injecting extraneous output into the rsync stream. For instance,
try running these two commands using whatever HOST (and user) options you need:
<blockquote><pre><code>
echo hi | ssh HOST cat
ssh HOST rsync --version
</code></pre></blockquote>
<p>The first command should output just the string "hi" and nothing else. The
second command should successfully start the remote rsync and report its version.
<p>If the remote rsync is a daemon, your first step should be to look at the
daemon's log file to see if it logged an error explaining why it aborted the
transfer. Also double-check to ensure that the log file is setup right, as a
wrong "log file" setting in your rsyncd.conf file can also cause this problem.
You could also halt the daemon and run it interactively using the
<code>--no-detach</code> and <code>--msgs2stderr</code> options and look for
errors while someone tries the rsync copy in another window.
<p>As for the cause of the remote rsync going away, there are several
common issues that people run into:
<ul>
<li>The destination disk is full (remember that you need at least the
size of the largest file that needs to be updated available in free
disk space for the transfer to succeed).
<li>An idle connection caused a router or remote-shell server to close
the connection.
<li>A network error caused the connection to be dropped.
<li>The remote rsync executable wasn't found.
<li>Your remote-shell setup isn't working right or isn't "clean"
(i.e. it is sending spurious text to rsync).
</ul>
<p>If you think the problem might be an idle connection getting closed, you
might be able to work around the problem by using a <code>--timeout</code>
option (newer rsyncs send keep-alive messages during lulls). You can also
configure ssh to send keep-alive messages when using Protocol 2 (look for
KeepAlive, ServerAliveInterval, ClientAliveInterval, ServerAliveCountMax, and
ClientAliveCountMax). You can also avoid some lulls by switching from
<code>--delete</code> (aka <code>--delete-before</code>) to <code>--del</code>
(aka <code>--delete-during</code>).
<p>If you can't figure out why the failure happened, there are steps
you can take to debug the situation. One way is to create a shell
script on the remote system such as
<a href="rsync-debug">this one named "rsync-debug"</a>.
You would use the script like this:
<blockquote><pre><code>
rsync -av --rsync-path=/some/path/rsync-debug HOST:SOURCE DEST
rsync -av --rsync-path=/some/path/rsync-debug SOURCE HOST:DEST
</code></pre></blockquote>
<p>This script enables core dumps and also logs all the OS system calls
that lead up to the failure to a file in the /tmp dir. You can use the
resulting files to help figure out why the remote rsync failed.
<p>If you are rsyncing directly to an rsync daemon (without using a
remote-shell transport), the above script won't have
any effect. Instead, halt the current daemon and run a debug version
with core-dumps enabled and (if desired) using a
system-call tracing utility such as <i>strace</i>, <i>truss</i>, or
<i>tusc</i>. For strace, you would do it like this (the -f option
tells strace to follow the child processes too):
<blockquote><pre><code>
ulimit -c unlimited
strace -f -t -s 1024 -o /tmp/rsync-$$.out rsync --daemon --no-detach
</code></pre></blockquote>
<p>Then, use a separate window to actually run the failing transfer, after
which you can kill the debug rsync daemon (pressing Ctrl-C should do it).
<p>If you are using rsync under inetd, I'd suggest temporarily disabling
that and using the above daemon approach to debug what is going on.
<li><p><b>Q:</b>
Why does my connection to an rsync daemon (using the "::" syntax)
fail immediately with an error like the following?
<blockquote><pre><code>
rsync: connection unexpectedly closed (24 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(342)
</code></pre></blockquote>
<p><b>A:</b>
Older rsync daemons (before 2.6.3) were unable to return errors that were
generated during the option-parsing phase of the transfer. Look in the
logfile on the server to see if an error was reported, such as a "refused"
option, an option that the server rsync doesn't support (e.g. perhaps
links are not supported by the server), or some other failure (such as
trying to send data to a read-only module). Upgrading the version of rsync
that is running as a daemon to at least 2.6.3 will allow these errors to
get returned to all rsync clients, old or new alike.
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<HTML>
<HEAD>
<TITLE>rsync mailing lists</TITLE>
</HEAD>
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<H2 align="center">rsync mailing lists</H2>
<p>
There are three mailing lists for rsync. All are optionally
available in digest mode and also through web archives.
</p>
<p>
Since these lists can generate a lot of traffic we suggest that
you should not subscribe from a web-mail account such as Yahoo!
or Hotmail, because your mailbox is likely to overflow.
Instead, please read directly from the archives.
</p>
<ul>
<li>
<b>rsync</b> is the main mailing lists for developers and
users. It sees between zero and twenty messages per day.
This is a good place to send questions about rsync, but please
<a
href="https://www.catb.org/~esr/faqs/smart-questions.html">read
this before posting</a>.
[<a href="https://www.mail-archive.com/rsync@lists.samba.org/">archive 1</a>,
<a href="https://lists.samba.org/archive/rsync/">archive 2</a>,
<a href="https://lists.samba.org/mailman/listinfo/rsync">subscriptions</a>]
</li>
<li>
<b>rsync-announce</b> carries only messages from the
maintainer annoucing new releases, which happen at most a few
times per month.
[<a href="https://www.mail-archive.com/rsync-announce@lists.samba.org/">archive 1</a>,
<a href="https://lists.samba.org/archive/rsync-announce/">archive 2</a>,
<a href="https://lists.samba.org/mailman/listinfo/rsync-announce">subscriptions</a>]
</li>
<li>
<b>rsync-cvs</b> carries messages are automatically generated
whenever a developer changes the source code, which can happen
many times per day. If you subscribe, you should probably
choose digest mode.
[<a href="https://www.mail-archive.com/rsync-cvs@lists.samba.org/maillist.html">archive 1</a>,
<a href="https://lists.samba.org/archive/rsync-cvs/">archive 2</a>,
<a href="https://lists.samba.org/mailman/listinfo/rsync-cvs">subscriptions</a>]
</li>
</ul>
<p>
Please report problems with the lists to the <tt>postmaster</tt>
at <tt>samba.org</tt>, but note that you can control your own
subscription using the web interface.
</p>
<H2 align="center">rsync Discord server</H2>
<p>
If you prefer real-time chat, there is also an rsync
<a href="https://discord.gg/Avfvy9zhdp">Discord server</a> for
discussion about rsync and its development.
</p>
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<H2 align="center">rsync on NT</H2>
<pre>
From: "Mike McHenry" <mmchen@minn.net>
Subject: Rsync 2.3.1 WinNT binaries and instructions available
Date: Fri, 15 Oct 1999 02:53:30 +1000
Hello all,
I have created Windows NT binaries for rsync 2.3.1 and have decided to make
them available for others to download. These binaries have been tested on
Windows NT Server 4.0 SP5 and WILL run in daemon mode if you follow my
instructions below. I make no guarantees about these binaries, they have
however been working for me for weeks on several NT machines.
Binaries at ftp://ftp.minn.net/usr/mmchen/
Instructions for running in daemon mode:
1. You will need two files, rsync.exe and cygwin1.dll. Place rsync.exe
anywhere you like (I chose c:\program files\rsync\rsync.exe) and put
cygwin1.dll in c:\winnt\system32
2. You will need a program from the NT Server resource kit called
srvany.exe. This program allows you to run any executable as a service. If
you simply install the entire service pack it will be located in c:\ntreskit
3. Create a service for rsync by typing the following:
instsrv Rsync "C:\ntreskit\srvany.exe"
4. You should now have a new service called Rsync and you can verify by
looking in Start->Control Panel->Services DON'T START IT YET!
5. If you want to run rsync in daemon mode you will need a configuration
file. Here is the one I use, call it rsyncd.conf and place it in the same
directory as rsync (C:\Program files\rsync\rsyncd.conf)
use chroot = false
strict modes = false
hosts allow = *
[backup]
path = /
read only = yes
list = no
This example configuration will make one big anonymous anonymous rsync area
available, I use this to backup my NT machines from a central Unix machine.
This configuration might not be ideal for you, change to suit your tastes.
The first two lines are important for rsync to work on Windows NT however.
6. You are going to need to hack some keys in the registry to make it work.
Don't do this unless you are comfortable with the changes! Run regedit32 and
add the following keys and values (quotation marks ARE IMPORTANT):
HKEY_LOCAL_MACHINE->SYSTEM->CurrentControlSet->Services->Rsync
Edit->Add Key-> Key Name: Paramaters
Edit->Add Value-> Value Name: AppDirectory Value: "C:\programfiles\rsync"
Edit->Add Value-> Value Name: Application Value: "C:\programfiles\rsync\rsync.exe"
Edit->Add Value-> Value Name: AppParamters Value: --config="C:\programfiles\rsync\rsyncd.conf" --daemon
7. That's it, you should be able to start and stop the rsync service at will
using the Services Control Panel. When running with the above configuration
you should be able to test by attempting to telnet to port 873 from a remote
machine.
telnet rsync.server.com 873 (replacing rsync.server.com with your own
server's address)
You should get a connection to the rsync daemon running on your NT box.
8. If you have problems you are on your own, sorry, I have enough to do :) I
would suggest triple-checking your spelling on EVERYTHING (filenames,
configs, reg keys). If you have any comments or suggestions I would be happy
to hear them at mmchen@minn.net.
Mike McHenry
Systems Administrator
MinnNet Communications, Inc.
</pre>
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From: "Mike McHenry" <mmchen@minn.net>
Subject: Rsync 2.3.1 WinNT binaries and instructions available
Date: Fri, 15 Oct 1999 02:53:30 +1000
Hello all,
I have created Windows NT binaries for rsync 2.3.1 and have decided to make
them available for others to download. These binaries have been tested on
Windows NT Server 4.0 SP5 and WILL run in daemon mode if you follow my
instructions below. I make no guarantees about these binaries, they have
however been working for me for weeks on several NT machines.
Binaries at ftp://ftp.minn.net/usr/mmchen/
Instructions for running in daemon mode:
1. You will need two files, rsync.exe and cygwin1.dll. Place rsync.exe
anywhere you like (I chose c:\program files\rsync\rsync.exe) and put
cygwin1.dll in c:\winnt\system32
2. You will need a program from the NT Server resource kit called
srvany.exe. This program allows you to run any executable as a service. If
you simply install the entire service pack it will be located in c:\ntreskit
3. Create a service for rsync by typing the following:
instsrv Rsync "C:\ntreskit\srvany.exe"
4. You should now have a new service called Rsync and you can verify by
looking in Start->Control Panel->Services DON'T START IT YET!
5. If you want to run rsync in daemon mode you will need a configuration
file. Here is the one I use, call it rsyncd.conf and place it in the same
directory as rsync (C:\Program files\rsync\rsyncd.conf)
use chroot = false
strict modes = false
hosts allow = *
[backup]
path = /
read only = yes
list = no
This example configuration will make one big anonymous anonymous rsync area
available, I use this to backup my NT machines from a central Unix machine.
This configuration might not be ideal for you, change to suit your tastes.
The first two lines are important for rsync to work on Windows NT however.
6. You are going to need to hack some keys in the registry to make it work.
Don't do this unless you are comfortable with the changes! Run regedit32 and
add the following keys and values (quotation marks ARE IMPORTANT):
HKEY_LOCAL_MACHINE->SYSTEM->CurrentControlSet->Services->Rsync
Edit->Add Key-> Key Name: Paramaters
Edit->Add Value-> Value Name: AppDirectory Value: "C:\programfiles\rsync"
Edit->Add Value-> Value Name: Application Value: "C:\programfiles\rsync\rsync.exe"
Edit->Add Value-> Value Name: AppParamters Value: --config="C:\programfiles\rsync\rsyncd.conf" --daemon
7. That's it, you should be able to start and stop the rsync service at will
using the Services Control Panel. When running with the above configuration
you should be able to test by attempting to telnet to port 873 from a remote
machine.
telnet rsync.server.com 873 (replacing rsync.server.com with your own
server's address)
You should get a connection to the rsync daemon running on your NT box.
8. If you have problems you are on your own, sorry, I have enough to do :) I
would suggest triple-checking your spelling on EVERYTHING (filenames,
configs, reg keys). If you have any comments or suggestions I would be happy
to hear them at mmchen@minn.net.
Mike McHenry
Systems Administrator
MinnNet Communications, Inc.

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<HTML>
<HEAD>
<TITLE>rsync resources</TITLE>
</HEAD>
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<H2 align="center">rsync resources</H2>
Please <a href="lists.html">let us know</a> if you have any rsync-related
documents to add to this list:
<ul>
<li>Be sure to search for the latest rsync info to get up-to-the-minute
results. You can use the search box at the top of the page for either
web searching or project searching (they are done via Google).
<li>
2002-05-15: rsync is not official GNU software, but we try to
work more or less in accordance with their <a
href="http://www.gnu.org/prep/maintain_toc.html">Guidelines for
Maintaining GNU Software</a>.
<li> 2002-04-10: A new tutorial on using rsync to create a system of <a
href="http://www.mikerubel.org/computers/rsync_snapshots/">rotating
backups</a>, by Mike Rubel.
<li>If you still don't know what rsync is, then take a look at the
<A HREF="https://download.samba.org/pub/rsync/README">README</A>.
<li>There is now a python script that implements
<a href="https://download.samba.org/pub/unpacked/rsync/support/atomic-rsync">an
atomic update</a> of the received files at the end of the transfer (when pulling).
<li> Brian Elliott Finley has put together a great Linux install system based
on rsync. You you read about it at <a href="http://thefinleys.com/SystemImager/">http://thefinleys.com/SystemImager/</a>
<li><a href="http://www.dirvish.com/">Dirvish</a> is a fast, disk based,
rotating network backup system that was originally written by JW Schultz.
<li><a href="http://backuppc.sourceforge.net/">BackupPC</a>: a backup
system using rsync. Hard-links all identical files (even between multiple
runs and multiple backup sources), compresses the files, provides an easy
interface to find and restore files, etc.
<li><a href="https://github.com/CharlesMAtkinson/bung">Bung</a>: (BackUp Next
Generation) backs up files, MariaDB, OpenLDAP, postgres, etc. via an extensible
templates system with git support. The rsync-based "rolling full" backup is
easy to browse and restore from using everyday tools.
<li><a href="http://hacks.dlux.hu/drsync/">drsync</a>: a wrapper for rsync
that remembers file sets between invocations so that a 2-way synchronization
of two systems is possible.
<li><a href="http://rsyncbackup.erlang.no/">rsyncbackup</a>: a helper
script that uses config files to setup multiple backup scenarios and
invokes rsync (or rsyncX on macOS).
<li>Users who use the new character-set conversion option of rsync (--iconv)
may want to check into the <a href="http://www.j3e.de/linux/convmv/man/">convmv</a>
package that lets you convert the names of already-transferred files into a
new characterset (for when you want to change or normalize the characterset
of a hierarchy of files).
<li>For those wanting to use launchd to run an rsync daemon (e.g. Mac
OS X Tiger users), Glen Scott provides the necessary
<a href="http://www.designsolution.co.uk/resources/rsync/">rsync.plist</a>
file.
<li>For the developer wanting to work on a branched rsync version based on
one of the diffs in the patches dir, you may want to check into Matt's
<a href="http://www.kepreon.com/~matt/myrsync/index.html#patchsync">patchsync</a>
script.
<!--#include virtual="doc-resources.html" -->
<li>There are a few choices for making rsync work with OS X's resource forks.
One is the official apple patch found on their opendarwin site, such as
<a href="http://darwinsource.opendarwin.org/10.4/rsync-20">this one</a>
(I've heard patch inefficiently transfers the entire resource fork information
for every file on every transfer.) Another choice is to use a third-party
adapted rsync, such as
<a href="http://archive.macosxlabs.org/rsyncx/rsyncx.html">rsyncx</a> or a
<a href="http://www.quesera.com/reynhout/misc/rsync+hfsmode">rsync+hfsmode
patch</a> by D Andrew Reynhout. For the future, I would like to see an rsync
that supports ACLs and Posix xattrs adapted to interact with resource forks in
a seamless way (if that's possible).
<li>Piero Orsoni wrote a GTK-based GUI for rsync called
<a href="http://www.opbyte.it/grsync/">grsync</a>.
<li>Those interested in using an rsync daemon over SSL may be interested in
<a href="http://dozzie.jarowit.net/trac/wiki/RsyncSSL">this wiki page</a>
that outlines a way to use a modern, simplified stunnel setup.
<li>Thomas Roessler has written an rsync wrapper for
<a href="ftp://riemann.iam.uni-bonn.de/pub/users/roessler/cvslock/">efficient,
safe CVS mirroring</a>.
<li>Rsync is distributed with the
<a href="https://download.samba.org/pub/unpacked/rsync/support/rrsync">rrsync python script</a>
that lets you restrict the rsync commands that can be run via ssh. (This is
a enhanced and reworked version of Joe Smith's original perl version.)
<li><a href="mailto:LEakin@Nostrum.COM">Lee Eakin</a> has written a <a href="rsync_wrapper.pl">perl wrapper for rsync</a>.
<li>A wire-compatible <a href="http://search.cpan.org/~cbarratt/">rsync implementation in perl</a>.
<li>A <a href="http://www.srehttp.org/apps/rxrsync/">REXX implementation of rsync</a>.
<li>An initial version of a <a href="http://www.kolosy.com/wordpress/?p=8">rewrite of rsync for .Net</a>.
<li>You might want to check out an encryption program that is being developed
to produce more rsync-friendly output:
<a href="http://rsyncrypto.lingnu.com/">rsyncrypto</a>.
<li>If you need a 2-way synchronization because both ends of the transfer may
be changing files, you may want to either look into a tool designed to do this
(e.g. <a href="http://freshmeat.net/projects/unison/">unison</a>), or you may
wish to use an external wrapper for rsync that keeps extra data about what was
in the last transfer so that it can figure out if a file is new or deleted
(e.g. <a href="http://freshmeat.net/projects/drsync/">drsync</a>).
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<!doctype linuxdoc system>
<linuxdoc>
<article>
<titlepag>
<title>About integration of rsync and Debian</title>
<author>
<name>Martin Pool <tt>mbp@samba.org</tt></name>
</author>
<date>$Date: 2002/05/14 03:10:09 $</date>
</titlepag>
<toc>
<sect>
<heading>Introduction</heading>
<p>
It seems like there is an rsync thread on <tt/debian-devel/
every month or two. Rather than going round in circles yet
again, I though I would summarise the issues in one place.
</p>
<p>
By way of background, I have been the maintainer of rsync for
about a year, and I wrote the <tt/librsync/ and <tt/rproxy/
packages. Incidentally, I run Debian on most of the machines
I use, so I do care about the two projects working together
well.
</p>
<p>
I have tried to respond to all the issues raised on the list
recently, but possibly have missed some. After putting many
hours into rsync I suppose I am quite fond of it and may be a
little biased, but I think I also know its strengths and
problems more than most.
<p>
If there are issues ommitted by this document, or if you think
the answers are incomplete, unbalanced, or incorrect, then
please mail <tt/mbp@samba.org/, <tt/rsync@lists.samba.org/
and/or <tt/debian-devel@lists.debian.org/.
</sect>
<sect>
<heading>Background</heading>
<sect1>
<heading>The rsync algorithm</heading>
<p>
rsync is really two independent but related ideas: the
<em/rsync algorithm/ for delta compression, and its
implementation in a mirroring program.
</p>
<p>
The rsync algorithm is described in detail in the ANU
Technical Report included with the distribution and on the
<htmlurl url="http://rsync.samba.org/" name="rsync.samba.org"> web site.
</p>
<p>
Briefly, the rsync algorithm provides an efficient means to
transfer a file <em/A/ from a source machine to a
destination machine, when a similar file <em/A'/ is already
present on the destination. The destination machine sends a
checksum of each consecutive block (of say 1kB) from <em/A'/
to the source machine. The source machine searches through
<em/A/ for matching blocks. Whatever does not match must be
different, and a description of these differences is sent to
the destination.
</p>
<p>
The algorithm could be embodied in other forms and uses than
the rsync program. Indeed, the algorithm has been
reimplemented in programs other than rsync itself: in other
languages (Rexx, CAML, Java), in a C library (<tt/librsync/)
and a derivative in xdelta. xdelta is a specialization of
the algorithm for the case where the two files are local and
can be directly compared to compute a minimal binary delta.
</p>
<p>
rsync deltas are much more efficient than diffs, for several
reasons: most importantly, useful diff formats include
context lines, which are wasted information. rsync gets the
same benefit of making sure that the change is applied to a
compatible version of the file, but in a much more efficient
way. diffs suffer from being human-readable and therefore
verbose, and cannot handle binary files. Both can be
transparently compressed. diffs are an invaluable tool for
software development, but not ideal for distribution of
deltas.
</p>
</sect1>
<sect1>
<heading/The rsync program/
<p>
The rsync mirroring program is similar in functionality to
other tools such as <tt/wget/, <tt/ftpmirror/, <tt/cvsup/
and <tt/rdist/. It has a number of functions that are
useful in association with file mirroring, such as bandwidth
limiting, access control, recursive mirroring, and selection
of files to copy in various ways.
</p>
<p>
In general, rsync is substantially faster than other
tools, because it uses delta compression, and because the
protocol is designed to be efficient both in traffic and
round trips. rsync can use <tt/zlib/ to compress traffic
(and introduce double-<tt/free()/ security holes :-), at the
option of the client. Compression may also be disabled by
the server administrator.
</p>
<p>
rsync has the important property that it is generally
idempotent: repeated runs of rsync, even if interrupted,
make the contents of the destination machine converge
towards those of the source machine.
<p>
Unlike wget and ftpmirror, rsync must be installed on both
the client and the server. It uses its own protocol, rather
than HTTP or FTP. This is probably the biggest practical
drawback at the moment: one cannot use rsync from arbitrary
web sites, but only from systems that have specifically
chosen to support it. On the other hand, many important
sites for free software do now support rsync, and the
developers see them as an important constituency to support.
<p>
rsync can tunnel through a proxy server that supports
<tt/HTTP CONNECT/, a SOCKS server (using <tt/socksify/), an
ssh tunnel, or various other methods.
<p>
rsync can run as a daemon, similar to an <tt/ftpd/, in which
it is controlled by the <tt>/etc/rsyncd.conf</tt> file. The
archetypal use is to offer public, anonymous, read-only
access to a software archive but as with <tt/ftpd/ other
configurations are possible and common.
</p>
<p>
rsync can also run across a tunnel program such as <tt/ssh/,
in which case it is very similar to <tt/scp/. This mode is
commonly used for making network backups, or uploading
information to a web server.
</p>
<p>
rsync may also be used locally, which is a degenerate case
with client and server connected across a unix-domain or
localhost socket.
</>
<p>
rsync runs on many varieties of Unix under both gcc and
native compilers, and also under Cygwin on Microsoft
platforms. There is somebody working on a VMS port.
</p>
</sect1>
<sect1>
<heading/librsync/
<p>
<tt/librsync/ is a library that reimplements the rsync
algorithm in a very flexible way, with the goal of allowing
any reasonable mode of operation, and integration with any
existing program. rsync does not currently link to
librsync, but it might do so in the long term.
<p>
<tt/librsync/ currently uses an encoding
format different to that of rsync 2.5, mostly because I did
not want to be constrained by historical code.
<p>
<tt/librsync/ is at version 0.9.5 and roughly as stable as
the version number suggests: it is used by Intermezzo and
some other projects, but is not yet really mature. The
<tt/librsync/ distribution comes with a tool <tt/rdiff/ that
exposes the functionality as a Unix tool to shell scripts,
etc. <tt/librsync/ is LGPL'd.
<p>
For example, you can imagine the server calculating and
caching the checksums, or the client calculating the delta
once and then sending it over UDP multicast to several
destinations, or uuencoded in email. Neither of these would
be straightforward to implement in the rsync codebase, but
all can be done with rdiff.
</sect1>
<sect1>
<heading/rproxy/
<p>
<tt/librsync/ is used in the <url
url="http://rproxy.samba.org/" name="rproxy"> program, which
is a prototype of transparent integration of delta
compression into HTTP.
</p>
<p>
rproxy implements delta compression of arbitrary HTTP
content, whether dynamic or static. For example, rproxy
gives very good compression on repeated visits to portal
sites such as Slashdot, since it can transmit only the
sections of the page modified since last time it was
viewed. Regular HTTP caches, by contrast, must either hit
on the whole page, or reload the whole page, and therefore
do poorly on template-based dynamic content.
<p>
rproxy adds compatible extensions to HTTP headers, and can
pass through HTTP caches. It requires upstream and
downstream support, which at the moment means two
installations of rproxy, but in the future could conceivably
be integrated into Mozilla, Squid, Apache and similar
programs.
<p>
rproxy is packaged in Debian and is moderately useful for
people with slow links.
<p>
rproxy is not HTML-specific, but HTML is by far the most
common case of dynamic HTTP content that can be
delta-compressed. However, HTML documents tend to be fairly
small, and as connectivity improves they're becoming of
decreasing interest as a compression problem.
<p>
(My personal interest in this project declined significantly
when I went from a 56k6 modem to ADSL at home. I realize
many people in the world still have slow connections.)
<p>
There are some Internet Drafts from Jeffrey Mogul and others
that add similar delta compression based on the server
storing all possible deltas. Last time I looked, there did
not seem much interest in wide adoption of these proposals.
<p>
Documenting a protocol extension to the standard expected by
an RFC can be a lot of work. A beginning on this work has
been made for rproxy, but more experiments with the
implementation are needed before proposal as a standard.
<p>
rproxy is not being actively developed at the moment.
Obviously I cannot answer why every programmer in the world
does not work on this. Personally I think that developing
rsync itself, and then librsync/rdiff, is likely to be more
useful; I suspect other people interested in working in this
area might have similar thoughts.
<p>
I don't think there are any problems in the code or project
that would actively prevent anybody from working on it. I'd
be happy to hand over maintenance to somebody else. Ben
Elliston has expressed interest in looking after it in the
last couple of months, and possibly it will be more active
in the future.
</sect1>
<sect1>
<heading>Introduction to Debian</heading>
<p>
Debian is a free operating system developed by the
cooperation of people all over the world. The most
important relation of rsync to Debian is copying of software
packages from developers to distribution servers to end
users.
</p>
<p>
Many Debian users get their software by internet download
from a public server, rather than pre-installed on a machine
or on CD-ROM.
</p>
<p>
Debian software archives include both software source,
binary packages for various architectures, and index
metadata, primarily the <tt/Packages/ files.
</p>
<p>
Because of Debian's community development process, new
packages are released very often. On a typical day in
Debian's <tt/unstable/ release, there might be fifty new
uploads.
</p>
<p>
Debian is quite different from other software distributions
in shipping so many packages so frequently. The BSDs (as I
understand it) base most of their development out of a CVS
or CVSup tree, which inherently distributes coarse-grained
deltas. Proprietary systems make binary releases, but much
less frequently. Possibly the development branches of other
distributions, such as Redhat "Rawhide" and Mandrake
"Cooker" are similar.
</p>
</sect1>
<sect1>
<heading>apt-proxy</heading>
<p><label id="apt-proxy">
<url url="http://apt-proxy.sourceforge.net/" name="apt-proxy"> is a caching proxy for Debian archives. It appears as an HTTP
server to apt clients, and uses rsync, http, or ftp to connect
to an upstream server.
<p>
Because rsync is less efficient than HTTP for transferring
compressed files, <tt/apt-proxy/ can selectively use rsync for
uncompressed Packages and files and HTTP or FTP for <tt/.deb/
files.
<p>
<tt/apt-proxy/, unlike Squid, has domain knowledge about
Debian archives and can therefore perform functions such as
purging old packages from the cache.
<p>
The original apt-proxy was written by Paul 'Rusty' Russel.
The current maintainer is Chris Halls.
</p>
</sect1>
</sect>
<sect>
<heading>Open Issues</heading>
<sect1>
<heading/Compressed files cannot be differenced/
<p>
<tt/gzip/, like most compression algorithms has the property
that a change in the source file at one point will cause
cascading changes in the output file from that point
onwards, and therefore make delta compression more or less
useless.
</p>
<p>
Although delta compression is not possible, rsync is still a
very useful tool for mirroring compressed files. The
efficient network protocol mean that it will generally be
slightly faster and use less traffic than HTTP or FTP.
<p>
There is a patch called <tt/--rsyncable/ for gzip that fixes
this behaviour: gzip files are basically broken up into
blocks so that changes (including insertion or deletion) in
the input file affect only the corresponding blocks in the
output file. (The blocks are not of fixed size, but rather
delimited by marker patterns at which a checksum hits a
particular value, so they move as data is inserted or
removed.)
<p>
I believe that this will merge into the upstream <tt/zlib/
soon and be on by default, at which point <tt/.deb/ files
will delta-compress well. This patch does seem to be
languishing, though, and it would be good to either get it
into the upstream, or into Debian's own version. Needless
to say it must be extremely thoroughly tested.
<p>
The scheme for containing changes is not specific to rsync,
and might also be useful with <tt/xdelta/, <tt/rdiff/, or
some other binary delta scheme invented in the future. It
also does not require a copy of the old file when
compressing the new one.
<p>
This scheme relies on the output file being determined only
by the input file. As far as I know compression schemes
like gzip, lzw, and bzip2 are deterministic in this way.
(GnuPG, for example, is not, since it uses a random session
key.)
<p>
Incidentally this would allow more efficient deltas between
Debian ISO images.
</p>
<p>
Alternatively, you could distribute an uncompressed package
tree that would rsync efficiently, but since the gzip patch
should merge soon this seems unnecessary.
<p>
There is also the interesting possibility of using
<tt/dpkg-repack/ to generate something similar to the
previous <tt/.deb/ and then use it as the basis of an rsync
download.
<p>
It could be possible to make an equivalent patch to
<tt/bzip2/, but possibly the large block size would cause
trouble.
<p>
A patch to gzip which implements this behaviour is available
from rsync CVS.
</sect1>
<sect1>
<heading/rsync is too hard on servers/
<p>
If it is, then I think we should fix the problems, rather
than invent a new system from scratch. I think the
scalability problems are accidents of the current codebase,
rather than anything inherent in the design.
</p>
</sect1>
<sect1>
<heading/We should throw out the current code and start from
scratch/
<p>
Some projects (Apache 2.0, Mozilla, ...) choose to do this;
some concentrate on piecemeal improvement (Linux).
<p>
As Joel Spolsky recently observed, throwing the code out to
start from scratch always seems like a nice idea, but rarely
works out. Essentially you are opting for the devil you
don't know, but he definitely exists.
<p>
Having dealt with some fairly crufty old code I sometimes
feel like doing this in rsync, but I can also see the
arguments against it. Starting from a new codebase would
bring in plenty of new bugs (including security bugs),
orphan existing users, and halt progress until it caught up
to the same level. It would require carefully documenting
all the existing internal protocols and behaviours, which is
a nice idea but not clearly a good use of the developers'
time.
<p>
If you throw out the code, you have the questions of whether
or not to keep the current network protocol, and whether or
not to keep the current command-line option.
<p>
Not being able to talk to old remote versions would be a
real pain, and would certainly slow adoption. (Think of how
unpopular SSH2 was when it wanted to be incompatible with
SSH1, but use the same TCP port.) On the other hand,
keeping the same network protocol limits your ability to
redesign things.
<p>
There is some cruft in the command line syntax, but throwing
it out would also break everybody's scripts, mental maps,
and documentation.
<p>
Possibly rsync 3.0 will be largely rewritten. <tt/librsync/
is a start in that direction. If you want to do this,
<tt/librsync/ might help you, but please think about it
before you begin hacking.
</sect1>
<sect1>
<heading/rsync development roadmap/
<p>
Debian's goals for rsync have to be balanced against the
requirements of other users (including the mirror sites that
distribute Debian) and the limited development resources.
<p>
As of April 2002, the 2.5.5 release is current and 2.5.6 is
pending. These versions seem to work quite well and we
encourage people to upgrade from stable 2.4.6 and previous
versions. It is very important to the developers to
establish a stable base release before starting out on new
development.
</p>
<p>
A number of enhancements are planned for the 2.6 series.
Some of them are discussed below, and more details can be
found in the <tt/TODO/ file in the rsync distribution.
<p>
If you want rsync to progress faster, the best thing you can
do is find reproducible failure cases and report them well,
or to help us write a regression test suite.
<p>
Nobody is very actively working on rproxy or librsync as far
as I know. Personally at the moment I feel supporting rsync
itself is more useful.
</sect1>
<sect1>
<heading/Goswin Brederlow's proposal to use the reverse rsync
algorithm over HTTP Range requests/
<p>
Goswin Brederlow has a nice proposal that allows rsync
compression using a regular HTTP server. It depends only
upon rsyncable archives, and development of new client and
support programs.
<p>
The idea, as I understand it, is that the checksums for each
package should be pre-calculated and stored on the HTTP
server along with the files they describe. (The checksum
files should be on the order of a thousand times smaller
than the archive file.)
<p>
The client program will download the checksum file over HTTP
if it exists. The client can then search for common blocks
in the local file, and therefore determine what new regions
it must fetch from the server. The client then sends an
HTTP request using the optional <tt/Range/ header for the
relevant sections of the new file, and patches them onto the
old file. The checksum file ought to also include a
whole-file message digest which can be used to ensure that
reassembly was successful.
<p>
This scheme has the great advantage that the server is
entirely passive, and only needs to support standard HTTP.
The checksum files can be generated once for each package
either during upload, or by the administrator of a
particular server.
<p>
(This is not the same as rproxy, which uses a different
encoding and requires upstream support, but can
transparently compress any request without requiring
signature files on the server.)
<p>
This scheme could be fairly easily built on top of rdiff or
librsync.
<p>
I think this sounds like a very promising scheme. I think
rsync might still be better for people who want to copy
large trees, but for users apt-getting single packages this
would be a simple way to get delta-compression in, pending
only --rsyncable files.
<p>
I'm not sure if all HTTP servers currently handle <tt/Range/
commands efficiently. This proposal would probably stress
them more than is common at the moment.
<p>
Because it requires a special client, and special checksum
files stored on the server it has a wider impact than just
using rsync. It ought to be done in a non-Debian-specific
way. Rather than adding knowledge about the deltas into
apt-get itself, we ought to make a separate tool which
downloads a delta over HTTP.
</sect1>
<sect1>
<heading>rsync only compares files with the exact same
name</heading>
<p>
Even for uncompressed files, rsync will not currently try to
use <tt/linux-2.4.17.tar/ to do delta-compression against
<tt/linux-2.4.18.tar/, because it cannot guess from the
names that the two files are related.
<p>
Paul Russell has contributed a patch which adds a heuristic
to detect this. It will probably be merged in 2.6.
</p>
</sect1>
<sect1>
<heading/rsync uses too much memory/
<p>
rsync traverses the entire directory tree before it begins
copying files. On machines with little virtual memory and a
lot of files to copy this can be a problem.
<p>
Some problems in this area have been fixed in the 2.5
series. Other solutions involving internal restructuring of
the <tt/flist/ and <tt/hlink/ code will be attempted in 2.6,
and they should yield a substantial improvement.
<p>
We are not likely to change the general approach of
traversing the tree up-front in the near future, because it
is tightly tied to the network protocol. It might be
attempted in the 3.0 timeframe, but it is not entirely clear
that it is really a problem.
</sect1>
<sect1>
<heading>rsync hangs?</heading>
<p>
There were a number of deadlock bugs in the past. We
believe they are all fixed in 2.5.5, but would welcome good
bug reports to the contrary. Some of them were in fact
Linux and Solaris kernel bugs, but they've been fixed by the
relevant parties quite some time ago.
</p>
</sect1>
<sect1>
<heading>Reduced network usage is not justified by increased CPU
usage
</heading>
<p>
The balance point will vary for each administrator. It is
hard to answer this universally. The balance is very
different in countries other than the US.
</p>
<p>
I suspect CPU cycles are falling in price faster than
network bandwidth, and for many people unused CPU cycles are
wasted but network packets cost money.
</p>
</sect1>
<sect1>
<heading/rsync can't saturate a fast link/
<p>
rsync with <tt>--whole-file</tt> (to turn off the
delta algorithm and be more comparable to ftp) floods a
100Mbps link. If you have something faster than that to
your upstream Debian mirror, you're a lucky person.
</p>
<p>
It is not inherently impossible to make rsync use
<tt>sendfile()</tt> and <tt>mmap()</tt>; it's just that most
people don't need them. (Apache did not use them by default
either last time I looked, but that doesn't mean it's not
fast enough for most people.)
</p>
</sect1>
<sect1>
<heading>rsync is not actively developed</heading>
<p>
This was a pretty fair accusation a year ago, but I don't
think it is true anymore. We have made five releases this
year, and the <tt/diff -u/ since 2.4.6, the last version
from the previous maintainer, is 38305 lines.
<p>
Mail is answered promptly. The web site has been revised
and cleaned. We're working on a regression test suite, code
cleanup and documentation, and other quality issues.
<p>
I'm the most active developer at the moment, but there are a
number of other people with experience in the code who
regularly commit changes or send patches.
<p>
The stability expectations of our users require a somewhat
disciplined approach to accepting patches, but I don't think
that's a bad thing. The goal is to iterate through
<em/freeze/ and <em/flow/ phases similar to the kernel.
<p>
The Debian rsync package maintainer, Phil Hands, has been
somewhat inactive, but apparently he's back now. Colin
Walters has been helping out.
<p>
If you have patches that were dropped, please send them
through again.
</sect1>
<sect1>
<heading>Servers should cache deltas</heading>
<p>
This also smells like premature optimization. It might be
useful, but it certainly seems less important than some
other tasks.
</sect1>
<sect1>
<heading>Possible patent on rsync?</heading>
<p>
It has been suggested that some uses of rsync may conflict
with a US patent. I am not sure of the current situation so
I won't comment. I don't know of any suggestion that the
rsync program as it currently exists infringes any patent.
</p>
<p>
I do know that rsync has been in use for many years by large
and small organization with no complaints of patent
infringement.
</p>
<p>
I would point out that linked lists, mark-and-copy garbage
collection, and the Tab key are all patented too. Somebody
who always carefully checked first for software patents
would never write anything at all.
</p>
</sect1>
<sect1>
<heading>Debian should store more metadata outside of
the package file</heading>
<p>
I can see some reasons why this might be a good idea, but
it doesn't seem particularly relevant to rsync either way.
</p>
</sect1>
<sect1>
<heading>Debian should distribute diffs or xdeltas
between different versions of their packages</heading>
<p>
A problem with this is that Debian releases packages very
often, and so the number of delta files is large. This will
be a problem for mirror sites who cannot carry all of the
delta files for history, although of course the client could
fall back to directly fetching the new package if the
relevant deltas are not present.
</p>
<p>
Fetching a series of deltas which update the same area is
less efficient than calculating the deltas directly.
</p>
<p>
Although this idea does not seem very practical for people
using <em/unstable/, it could work well for <em/stable/
and other situations where there are relatively few
releases, or for people without network access. One could,
for example, distribute a CD-ROM of xdeltas. On the other
hand, since CD-ROMs are relatively large compared to the
distribution it might be simpler to just distribute the new
packages directly as is currently done.
</sect1>
<sect1>
<heading>rsync should be used by <tt/apt-get update/</heading>
<p>
Even if there are few gains from compressing <tt/.deb/s,
rsync might help in providing a more efficient transfer of
the <tt/Packages/ file, which has small but frequent
changes. This approach is used by <tt/apt-proxy/.
</sect1>
</sect>
<appendix>
<sect>
<heading>Revision history</heading>
<p><tscreen><verb>
$Log: rsync-and-debian.sgml,v $
Revision 1.10 2002/05/14 03:10:09 mbp
Add note about just transferring Package files.
Revision 1.9 2002/05/14 02:35:43 mbp
Update notes on apt-proxy based on mail from Chris Halls.
Revision 1.8 2002/04/12 02:04:15 mbp
More information about Goswin's idea, as I understand it.
Revision 1.7 2002/04/12 01:39:52 mbp
Lots more details about rproxy. Thanks to Brian May for prompting me
to do this.
Revision 1.6 2002/04/12 00:43:06 mbp
Fix revision history SGML stuff.
Revision 1.5 2002/04/12 00:24:50 mbp
Fix mailing list name.
Add revision history.
</verb></tscreen></p>
</sect>
</article>
</linuxdoc>

View File

@@ -1,10 +0,0 @@
#!/bin/sh
ulimit -c unlimited
# Some systems have "truss" or "tusc" instead of "strace".
# The -f option tells strace to follow children too.
# The -t option asks for timestamps.
# The -s 1024 option increases the string decoding limit per function call.
# The -o option tells strace where to send its output.
strace -f -t -s 1024 -o /tmp/rsync-$$.out rsync "${@}"

View File

@@ -1,471 +0,0 @@
# __
# /\ \ From the mind of
# / \ \
# / /\ \ \_____ Lee Eakin <LEakin@Nostrum.COM>
# / \ \ \______\ or <Lee@Eakin.ORG>
# / /\ \ \/____ /
# \ \ \ \____\/ / Wrapper module for the rsync program
# \ \ \/____ / rsync can be found at http://rsync.samba.org/rsync/
# \ \____\/ /
# \/______/
package Rsync;
require 5.004;
use FileHandle;
use IPC::Open3 qw(open3);
use Carp;
use strict;
=head1 NAME
Rsync - perl module interface to B<rsync> http://rsync.samba.org/rsync/
=head1 SYNOPSIS
use Rsync;
$obj = Rsync->new(qw(-az C<-e> /usr/local/bin/ssh
--rsync-path /usr/local/bin/rsync));
$obj->exec(qw(localdir rhost:remdir))
or warn "rsync failed\n";
=head1 DESCRIPTION
Perl Convenience wrapper for B<rsync> program. Written for B<rsync> 2.3.1 but
should perform properly with most versions.
=cut
# options from the rsync man pae
###### Boolean flags ######
# -h, --help show this help screen
# -v, --verbose increase verbosity
# -q, --quiet decrease verbosity
# -c, --checksum always checksum
# -a, --archive archive mode
# -r, --recursive recurse into directories
# -R, --relative use relative path names
# -b, --backup make backups (default ~ suffix)
# -u, --update update only (don't overwrite newer files)
# -l, --links preserve soft links
# -L, --copy-links treat soft links like regular files
# --copy-unsafe-links copy links outside the source tree
# --safe-links ignore links outside the destination tree
# -H, --hard-links preserve hard links
# -p, --perms preserve permissions
# -o, --owner preserve owner (root only)
# -g, --group preserve group
# -D, --devices preserve devices (root only)
# -t, --times preserve times
# -S, --sparse handle sparse files efficiently
# -n, --dry-run show what would have been transferred
# -W, --whole-file copy whole files, no incremental checks
# -x, --one-file-system don't cross filesystem boundaries
# -C, --cvs-exclude auto ignore files in the same way CVS does
# RCS SCCS CVS CVS.adm RCSLOG cvslog.* tags TAGS
# .make.state .nse_depinfo *~ #* .#* ,* *.old *.bak
# *.BAK *.orig *.rej .del-* *.a *.o *.obj *.so *.Z
# *.elc *.ln core
# --delete delete files that don't exist on the sending side
# --delete-excluded also delete excluded files on the receiving side
# --partial keep partially transferred files
# --force force deletion of directories even if not empty
# --numeric-ids don't map uid/gid values by user/group name
# -I, --ignore-times don't exclude files that match length and time
# --size-only only use file size when determining if a file
# should be transferred
# -z, --compress compress file data
# --version print version number
# --daemon run as a rsync daemon
# --stats give some file transfer stats
# --progress show progress during transfer
###### scalar values ######
# --csum-length=LENGTH <=16 bit md4 checksum size
# -B, --block-size=SIZE checksum blocking size (default 700)
# --timeout=TIME set IO timeout in seconds
# --port=PORT specify alternate rsyncd port number
# -e, --rsh=COMMAND specify rsh replacement
# -T, --temp-dir=DIR create temporary files in directory DIR
# --compare-dest=DIR also compare destination files relative to DIR
# --exclude-from=FILE exclude patterns listed in FILE
# --include-from=FILE don't exclude patterns listed in FILE
# --config=FILE specify alternate rsyncd.conf file
# --password-file=FILE get password from FILE
# --log-format=FORMAT log file transfers using specified format
# --suffix=SUFFIX override backup suffix
# --rsync-path=PATH specify path to rsync on the remote machine
###### array values ######
# --exclude=PATTERN exclude files matching PATTERN
# --include=PATTERN don't exclude files matching PATTERN
#
=over 4
=item Rsync::new
$obj = new Rsync;
or
$obj = Rsync->new;
or
$obj = Rsync->new(@options);
=back
Create an Rsync object. Any options passed at creation are stored in
the object as defaults for all future exec call on that object. Options
are the same as those in L<rsync> with the addition of
--path-to-rsync which can be used to override the hardcoded default of
/usr/local/bin/rsync, and --debug which causes the module functions to
print some debugging information to STDERR.
=cut
sub new {
my $class=shift;
# seed the options hash, booleans, scalars, excludes, data,
# status, stderr/stdout storage for last exec
my $self={
# the full path name to the rsync binary
'path-to-rsync' => '/usr/local/bin/rsync',
# these are the boolean flags to rsync, all default off, including them
# in the args list turns them on
'flag' => {qw(
--archive 0 --backup 0 --checksum 0
--compress 0 --copy-links 0 --copy-unsafe-links 0
--cvs-exclude 0 --daemon 0 --delete 0
--delete-excluded 0 --devices 0 --dry-run 0
--force 0 --group 0 --hard-links 0
--help 0 --ignore-times 0 --links 0
--numeric-ids 0 --one-file-system 0 --owner 0
--partial 0 --perms 0 --progress 0
--quiet 0 --recursive 0 --relative 0
--safe-links 0 --size-only 0 --sparse 0
--stats 0 --times 0 --update 0
--verbose 0 --version 0 --whole-file 0
)},
# these have simple scalar args we cannot easily check
'scalar' => {qw(
--block-size 0 --compare-dest 0 --config 0
--csum-length 0 --exclude-from 0 --include-from 0
--log-format 0 --password-file 0 --port 0
--rsh 0 --rsync-path 0 --suffix 0
--temp-dir 0 --timeout 0
)},
# these can be specified multiple times and are additive, the doc also
# specifies that it is an ordered list so we must preserve that order
'exclude' => [],
# source/destination path names and hostnames
'data' => [],
# return status from last exec
'status' => 0,
'realstatus' => 0,
# whether or not to print debug statements
'debug' => 0,
# stderr from last exec in array format (messages from remote rsync proc)
'err' => [],
# stdout from last exec in array format (messages from local rsync proc)
'out' => [],
};
if (@_) {
&defopts($self,@_) or return undef;
}
bless $self, $class;
}
=over 4
=item Rsync::defopts
defopts $obj @options;
or
$obj->defopts(@options);
=back
Set default options for future exec calls for the object. See L<rsync>
for a complete list of valid options. This is really the internal
function that B<new> calls but you can use it too. Presently there is no way
to turn off the boolean options short of creating another object, but if it is
needed and the B<rsync> guys don't use it, I may add hooks to let + and ++ or a
leading no- toggle it back off similar to B<Getopt::Long> (the GNU way).
=cut
sub defopts {
my $self=shift;
my @opts=@_;
# need a conversion table in case someone uses the short options
my %short=(qw(
-B --block-size -C --cvs-exclude -D --devices -H --hard-links
-I --ignore-times -L --copy-links -R --relative -T --temp-dir
-W --whole-file -a --archive -b --backup -c --checksum
-e --rsh -g --group -h --help -l --links
-n --dry-run -o --owner -p --perms -q --quiet
-r --recursive -s --sparse -t --times -u --update
-v --verbose -x --one-file-system -z --compress
));
while (my $opt=shift @opts) {
my $arg;
print(STDERR "setting debug flag\n"),$self->{debug}=1,next
if $opt eq '--debug';
print STDERR "processing option: $opt\n" if $self->{debug};
if ($opt=~/^-/) {
# handle short opts first
if ($opt=~/^-(\w+)$/) {
foreach (split '',$1) {
print STDERR "short option: -$_\n" if $self->{debug};
if (exists $short{'-'.$_}) {
$opt=$short{'-'.$_};
# convert it to the long form
$opt=$short{$opt} if exists $short{$opt};
# handle the 3 short opts that require args
$self->{scalar}{$opt}=shift(@opts),next if (/^[BeT]$/);
# handle the rest
$self->{flag}{$opt}=1,next if exists $self->{flag}{$opt};
}
carp "$opt - unknown option\n";
return undef;
}
}
# handle long opts with = args
if ($opt=~/^(--\w+[\w-]*)=(.*)$/) {
print STDERR "splitting longopt: $opt ($1 $2)\n" if $self->{debug};
($opt,$arg)=($1,$2);
}
# handle boolean flags
$self->{flag}{$opt}=1,next if exists $self->{flag}{$opt};
# handle simple scalars
$self->{scalar}{$opt}=($arg || shift @opts),next
if exists $self->{scalar}{$opt};
# handle excludes
if ($opt eq '--exclude') {
$arg||=shift @opts;
# if they sent a reset, we will too
$self->{exclude}=[],next if $arg eq '!';
# otherwise add it to the list
push @{$self->{exclude}},$arg;
next;
}
# to preserve order we store both includes and excludes in the same
# array. We use the leading '+ ' (plus space) trick from the man
# page to accomplish this.
if ($opt eq '--include') {
$arg||=shift @opts;
# first check to see if this is really an exclude
push(@{$self->{exclude}},$arg),next if $arg=~s/^- //;
# next see if they sent a reset, if they did, we will too
$self->{exclude}=[],next if $arg eq '!';
# if it really is an include, fix it first, since we use exclude
$arg='+ '.$arg unless $arg=~/^\+ /;
push @{$self->{exclude}},$arg;
next;
}
# handle our special case to override hard-coded path to rsync
$self->{'path-to-rsync'}=($arg || shift @opts),next
if $opt eq '--path-to-rsync';
# if we get this far nothing matched so it must be an error
carp "$opt - unknown option\n";
return undef;
} else { # must be data (source/destination info)
print STDERR "adding to data array: $opt\n" if $self->{debug};
push(@{$self->{data}},$opt);
}
}
1;
}
=over 4
=item Rsunc::exec
exec $obj @options or warn "rsync failed\n";
or
$obj->exec(@options) or warn "rsync failed\n";
=back
This is the function that does the real work. Any options passed to this
routine are appended to any pre-set options and are not saved. They effect
the current execution of B<rsync> only. It returns 1 if the return status was
zero (or true), if the B<rsync> return status was non-zero it returns undef and
stores the return status. You can examine the return status from rsync and
any output to stdout and stderr with the functions listed below.
=cut
sub exec {
my $self=shift;
my @cmd=($self->{'path-to-rsync'});
foreach (sort keys %{$self->{flag}}) {
push @cmd,$_ if $self->{flag}{$_};
}
foreach (sort keys %{$self->{scalar}}) {
push @cmd,$_.'='.$self->{scalar}{$_} if $self->{scalar}{$_};
}
foreach (@{$self->{exclude}}) {
push @cmd,'--exclude='.$_;
}
foreach (@{$self->{data}}) {
push @cmd,$_;
}
push @cmd,@_ if @_;
print STDERR "exec: @cmd\n" if $self->{debug};
my $in=FileHandle->new; my $out=FileHandle->new; my $err=FileHandle->new;
my $pid=eval{ open3 $in,$out,$err,@cmd };
if ($@) {
$self->{realstatus}=0;
$self->{status}=255;
$self->{err}=[$@,"Execution of rsync failed.\n"];
return undef;
}
$in->close; # we don't use it and neither should rsync (at least not yet)
$self->{err}=[ $err->getlines ];
$self->{out}=[ $out->getlines ];
$err->close;
$out->close;
waitpid $pid,0;
$self->{realstatus}=$?;
$self->{status}=$?>>8;
return undef if $self->{status};
return 1;
}
=over 4
=item Rsync::status
$rval = status $obj;
or
$rval = $obj->status;
=back
Returns the status from last B<exec> call right shifted 8 bits.
=cut
sub status {
my $self=shift;
return $self->{status};
}
=over 4
=item Rsync::realstatus
$rval = realstatus $obj;
or
$rval = $obj->realstatus;
=back
Returns the real status from last B<exec> call (not right shifted).
=cut
sub realstatus {
my $self=shift;
return $self->{realstatus};
}
=over 4
=item Rsync::err
$aref = err $obj;
or
$aref = $obj->err;
=back
Returns an array or a reference to the array containing all output to stderr
from the last B<exec> call. B<rsync> sends all messages from the remote
B<rsync> process to stderr. This functions purpose is to make it easier for
you to parse that output for appropriate information.
=cut
sub err {
my $self=shift;
return(wantarray ? @{$self->{err}} : $self->{err});
}
=over 4
=item Rsync::out
$aref = out $obj;
or
$aref = $obj->out;
=back
Similar to the B<err> function, this returns an array or a reference to the
array containing all output to stdout from the last B<exec> call. B<rsync>
sends all messages from the local B<rsync> process to stdout.
=cut
sub out {
my $self=shift;
return(wantarray ? @{$self->{out}} : $self->{out});
}
=head1 Author
Lee Eakin E<lt>leakin@nostrum.comE<gt>
=head1 Credits
Gerard Hickey C<PGP::Pipe>
Russ Allbery C<PGP::Sign>
Graham Barr C<Net::*>
Andrew Tridgell and Paul Mackerras C<rsync(1)>
John Steele E<lt>steele@nostrum.comE<gt>
Philip Kizer E<lt>pckizer@nostrum.comE<gt>
Larry Wall C<perl(1)>
I borrowed many clues on wrapping an external program from the PGP modules,
and I would not have had such a useful tool to wrap except for the great work
of the B<rsync> authors. Thanks also to Graham Barr, the author of the libnet
modules and many others, for looking over this code. Of course I must mention
the other half of my brain, John Steele, and his good friend Philip Kizer for
finding B<rsync> and bringing it to my attention. And I would not have been
able to enjoy writing useful tools if not for the creator of the B<perl>
language.
=head1 Copyrights
Copyleft (l) 1999, by Lee Eakin
=cut
1;

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@@ -1,284 +0,0 @@
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>rsync</TITLE>
<style>
.security { color: red; }
h3 { margin-bottom: 0px; }
.date { color: #D25A0B; }
</style>
</HEAD>
<!--#include virtual="header.html" -->
<H2 align="center">Rsync Security Advisories</H2>
<p>You should install a security fix for rsync when the rync you are running is:<ol>
<li>older than 3.2.5 and pulling from an untrusted server
<li>older than 3.2.5 and using the bundled zlib
<li>older than 3.1.3 with --xattrs enabled
<li>older than 3.1.3 with a writable rsync daemon
<li>older than 2.6.6
</ol>
<p><a name="s3_2_5"></a><hr>
<h3>Improved file-list validation in 3.2.5</h3>
<i class=date>August 14th, 2022</i>
<p>If you are running an rsync older than 3.2.5 and pulling files from an
untrusted server, upgrade to 3.2.5 to get some added file-list validation rules
that should prevent the sender from sneaking in extra top-level arguments
and/or including files/dirs that should have been filtered out by the client's
filter rules. Fixes CVE-2022-29154.
<p><a name="s3_2_5-2"></a><hr>
<h3>Zlib memory corruption bug in rsync 2.6.6 - 3.2.4</h3>
<i class=date>August 14th, 2022</i>
<p>If your rsync is configured to use the bundled zlib, you should upgrade to
3.2.5 which contains the official zlib fix for a buffer overrun bug that was
detailed in CVE-2022-37434. While you're at it, be sure to update your system's
zlib.
<p><a name="s3_2_4"></a><hr>
<h3>Zlib memory corruption bug in rsync 2.6.6 - 3.2.3</h3>
<i class=date>April 15th, 2022</i>
<p>If your rsync is configured to use the bundled zlib, you should upgrade to
3.2.4 which contains the official zlib fix for a memory corruption bug that was
detailed in CVE-2018-25032. While you're at it, be sure to update your system's
zlib.
<p><a name="s3_1_3"></a><hr>
<h3>File-list validation in 3.1.3</h3>
<i class=date>January 28st, 2018</i>
<p>If you are using a version of rsync older than 3.1.3 as a client and
receiving xattrs from an rsync server that you might not fully trust, a
malicious (modified) server could send a non-null-terminated xattr name to
overflow the xattr read buffer.
<p>If you are running a writable rsync daemon older than 3.1.3, you should add
a rule "refuse options = protect-args" if you don't fully trust the users who
are sending you files.
<p><a name="s3_1_2"></a><hr>
<h3>File-list validation in 3.1.2</h3>
<i class=date>December 21st, 2015</i>
<p>If you're using a version of rsync older than 3.1.2 as a client and
receiving files from an rsync server that you might not fully trust, this
version adds extra checking to the file list to prevent the sender from
tweaking the paths and/or the transfer requests in a way that could cause
a file to be received outside the transfer destination.
<p><a name="s3_0_2"></a><hr>
<h3>Xattr security fix in 3.0.2</h3>
<i class=date>April 8th, 2008</i>
<p>If you're using a version of rsync from 2.6.9 to 3.0.1 that has extended
attribute (xattr) support enabled, you should upgrade to 3.0.2 to avoid a
potential buffer overflow problem. All 3.x versions have the potential to
support xattrs (depending on OS availability and the configure options used),
but version 2.6.9 had to be patched for this support. You can run the command
"rsync --version" and look for the string "xattrs" (as long as it is not
"no&nbsp;xattrs") to see if your rsync is affected.
<p>For those running affected versions, there is
<a href="https://download.samba.org/pub/rsync/security/rsync-3.0.1-xattr-alloc.diff">a
patch with the fix available</a>.
<p>Those running a writable rsync daemon can opt to refuse the "xattrs" option
as a way to avoid the problem without an upgrade:
<blockquote><pre>refuse options = xattrs</pre></blockquote>
<p>(If you already refuse options, be sure to append "xattrs" to your existing
config parameter rather than adding another refuse directive.)
<p><a name="s3_0_0"></a><hr>
<h3>Daemon security fixes in 3.0.0 (with patches for 2.6.9)</h3>
<i class=date>First published on November 28th, 2007;<br>
Updated on December 16th, 2007;<br>
Item 3 added on February 15th, 2008</i>
<p>Three security advisories affect people who run a <b>writable</b> rsync
daemon: The first affects only those with "use chroot = no" (which is not a
very safe combination in general), the second affects a daemon that has
daemon-excluded files that are being hidden in a module's hierarchy, and
the third affects only those with "use chroot = yes".
Included are simple config-change suggestions that should help you to
avoid the security issues and patches that make things safer.
These advisories affect all rsync versions.
<h4>1. Daemon advisory for "use chroot = no"</h4>
<p>If you are running a writable rsync daemon with "use chroot = no", there
is at least one way for someone to trick rsync into creating a symlink
that points outside of the module's hierarchy.
<p>This means that if you are allowing access from users who you don't
trust, that you should either figure out a way to turn on "use chroot",
or configure the daemon to refuse the "links" option (see "refuse
options" in the rsyncd.conf manpage) which will disable the ability of
the rsync module to receive symlinks. After doing so, you should also
check that any existing symlinks in the daemon hierarchy are safe.
<p>Starting with the 3.0.0-pre6 release, there is a new daemon parameter
available: "munge symlinks". This allows an rsync daemon to accept
symlinks and return them intact (with even a leading slash still there,
which is new for a non-chroot daemon), but will not allow the symlinks
to be used while they are in the daemon's hierarchy.
<p>For those running
2.6.9, there is
<a href="https://download.samba.org/pub/rsync/security/rsync-2.6.9-munge-symlinks.diff">a
patch for 2.6.9 to implement this parameter</a>.
<p>Any admin applying that patch should read the "munge symlinks" section
of the modified rsyncd.conf manpage for more information. You can also
read about this parameter in the
<a href="https://download.samba.org/pub/rsync/rsyncd.conf.html">rsyncd.conf
manpage from a 3.x version</a>.
<h4>2. Daemon advisory for daemon excludes</h4>
<p>If you are running a writable rsync daemon that is using one of the
"exclude", "exclude from", or "filter" parameters in the rsyncd.conf file
to hide data from your users, you should be aware that there are tricks
that a user can play with symlinks and/or certain options that can allow
a user that knows the name of a hidden file to access it or overwrite it
(if file permissions allow that).
<p>You can avoid the symlink problem using the suggestions in the advisory
above.
<p>When a daemon has "use chroot = no" set , there was some buggy
exclude-checking for these options: <code>--compare-dest</code>,
<code>--link-dest</code>, <code>--copy-dest</code>, <code>--partial-dir</code>,
<code>--backup-dir</code>, <code>--temp-dir</code>, and
<code>--files-from</code>. These are fixed in the 3.0.0pre7 release. For
those running 2.6.9, there is <a
href="https://download.samba.org/pub/rsync/security/rsync-2.6.9-daemon-exclude.diff">a patch for
2.6.9</a> to fix these checks.
<p>Some of the above options can still cause problems if an excluded
sub-directory or filename is inside the option's directory hierarchy and the
names of a transferred file clashes with it. The affected options are the
various <code>--*-dest</code> options (of which only <code>--link-dest</code>
is particularly worrisome),
<code>--backup-dir</code>, and <code>--partial-dir</code>.
<p>You can avoid these sub-path problems by putting the following "refuse
options" setting into your rsyncd.conf file:
<blockquote><pre>refuse options = link-dest backup-dir partial-dir</pre></blockquote>
<p>Those who aren't using an rsync with the latest exclude fixes may want to add
some of the other affected options as well.
<h4>3. Daemon advisory for "use chroot = yes"</h4>
<p>If you are running a writable rsync daemon with "use chroot = yes", you
should take care that users cannot upload their own library files and attempt
to load them.
<p>Beginning with rsync 3.0.0pre10, you can specify an inside-chroot path that
makes the top of the transfer a subdirectory inside the chroot area, and that
automatically makes library loading occur outside the transfer area (assuming
you didn't pick an unwise subdirectory name for the transfer area and you
don't have symlinks that point outside the transfer area).
<p>If that solution is not good for you, the easiest way to protect your daemon
is to create some appropriate directories in the top of your module's path
hierarchy, such as "/etc", "/lib", and "/usr" (and any other top-level dirs
that might be in the load path), chown those directories to some other user
than the one that the module runs as (so that rsync will not be able to write
files there, assuming that it is not run as root), and then hide the dirs using
an exclude directive (either add a new one or extend your existing one):
<blockquote><pre>exclude = /etc /lib /usr</pre></blockquote>
<p>Doing all that will assure you that no user will be able to use rsync to
upload a library that can be potentially loaded while rsync is attempting to
perform an action, such as translating a username. You can feel free to put
trusted libraries that you want rsync to access in the protected hierarchies,
as desired.
<p>Also available in rsync 3.0.0pre10 is a new daemon parameter that allows you
to avoid the accessing of user/group-name translation libraries by a chrooted
rsync: the "numeric ids" daemon parameter lets you turn on a forced
numeric-only mode. The default for a chroot module is to enable this
parameter, while the default for a non-chroot module is to disable it.
<p>For those running 2.6.9, there is <a
href="https://download.samba.org/pub/rsync/security/rsync-2.6.9-daemon-ids.diff">a patch for
2.6.9</a> to add the "numeric ids" daemon config parameter. (The patch will
only apply cleanly if you've already applied the munge-symlinks diff mentioned
above.)
<p><a name="s2_6_8"></a><hr>
<h3>Xattr security fix in 2.6.8</h3>
<i class=date>April 22th, 2006</i>
<p>If you're using a version of rsync prior to 2.6.8 that was patched to
include extended attribute (xattr) support, you should upgrade to 2.6.8 or
later to avoid a potential buffer overflow problem.
<p><a name="s2_6_6"></a><hr>
<h3>Zlib security fix in 2.6.6</h3>
<i class=date>July 28th, 2005</i>
<p>If you're using a version of rsync prior to 2.6.6, there is a potential
null-pointer security bug in the zlib code. You can avoid its affect in an
rsync daemon situation by configuring rsync to refuse the "compress" option.
<p><a name="s2_6_3"></a><hr>
<h3>Daemon path-sanitizing fix in 2.6.3</h3>
<i class=date>August 12th, 2004</i>
<p>There is a path-sanitizing bug that affects daemon-mode in
rsync versions prior to 2.6.3, but only if "use chroot" is disabled. It
does <b>not</b> affect the normal send/receive filenames that specify what
files should be transferred (this is because these names happen to get
sanitized twice, and thus the second call removes any lingering leading
slash(es) that the first call left behind). It does affect certain
option paths that cause auxiliary files to be read or written.
<p>One potential fix that doesn't require recompiling rsync is to set
"use chroot = true" for all the modules in the rsyncd.conf file.
<p><a name="s2_6_1"></a><hr>
<h3>Daemon security fix in 2.6.1</h3>
<i class=date>April 26th, 2004</i>
<p>There is a security problem in all versions prior to 2.6.1 that affects only
people running a read/write daemon with "use chroot" disabled. If the user privs
of a module in the daemon config is anything above "nobody", you are at risk
of someone crafting an attack that could write a file outside of the module's
"path" setting (where all its files should be stored). Please either enable
chroot or upgrade to 2.6.1. People not running a daemon, running a read-only
daemon, or running a chrooted daemon are totally unaffected.
<p><a name="s2_5_7"></a><hr>
<h3>Memory overflow fix in 2.5.7</h3>
<i class=date>December 4th, 2003</i>
<p>Rsync versions prior to 2.5.7 contain a heap overflow vulnerability that
could be used to remotely run arbitrary code, but this only affects the use of
rsync as an "rsync daemon" (where rsync handles incoming socket connections,
typically on port 873).
<!--#include virtual="footer.html" -->
<br>&nbsp;
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I use rsync to backup my wifes home directory across a modem link each
night. The cron job looks like this
#!/bin/sh
cd ~susan
{
echo
date
dest=~/backup/`date +%A`
mkdir $dest.new
find . -xdev -type f \( -mtime 0 -or -mtime 1 \) -exec cp -aPv "{}"
$dest.new \;
cnt=`find $dest.new -type f | wc -l`
if [ $cnt -gt 0 ]; then
rm -rf $dest
mv $dest.new $dest
fi
rm -rf $dest.new
rsync -Cavze ssh . samba:backup
} >> ~/backup/backup.log 2>&1
note that most of this script isn't anything to do with rsync, it just
creates a daily backup of Susans work in a ~susan/backup/ directory so
she can retrieve any version from the last week. The last line does
the rsync of her directory across the modem link to the host
samba. Note that I am using the -C option which allows me to add
entries to .cvsignore for stuff that doesn't need to be backed up.

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<!--Converted with LaTeX2HTML 98.1p1 release (March 2nd, 1998)
originally by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds
* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan
* with significant contributions from:
Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
<HTML>
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<TITLE>Footnotes</TITLE>
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<DT><A NAME="foot10">... bytes</A><A NAME="foot10"
HREF="node2.html#tex2html1"><SUP>1</SUP></A>
<DD>We have found that
values of S between 500 and 1000 are quite good for most purposes
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</PRE>
<DT><A NAME="foot24">... size.</A><A NAME="foot24"
HREF="node6.html#tex2html2"><SUP>2</SUP></A>
<DD>All the tests in this section were
carried out using rsync version 0.5
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</PRE>
<DT><A NAME="foot40">... files.</A><A NAME="foot40"
HREF="node6.html#tex2html3"><SUP>3</SUP></A>
<DD>The wall
clock time was approximately 2 minutes per run on a 50 MHz SPARC 10
running SunOS, using rsh over loopback for communication. GNU diff
took about 4 minutes.
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</PRE>
</DL><ADDRESS>
<I>Andrew Tridgell</I>
<BR><I>1998-11-09</I>
</ADDRESS>
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