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968ff560d219f4faef3ddcff75db7308f2eaa3c2
rsync/flist.c
Wayne Davison 9fdb334e85 Restore the old include behavior where a command-line include could 
override a .cvsignore exclude.
2004-04-22 22:17:15 +00:00

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/*
Copyright (C) Andrew Tridgell 1996
Copyright (C) Paul Mackerras 1996
Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file flist.c
* Generate and receive file lists
*
* @sa http://lists.samba.org/pipermail/rsync/2000-June/002351.html
*
**/
#include "rsync.h"
extern struct stats stats;
extern int verbose;
extern int do_progress;
extern int am_root;
extern int am_server;
extern int am_daemon;
extern int always_checksum;
extern int module_id;
extern int ignore_errors;
extern int numeric_ids;
extern int cvs_exclude;
extern int recurse;
extern char curr_dir[MAXPATHLEN];
extern char *files_from;
extern int filesfrom_fd;
extern int one_file_system;
extern int preserve_links;
extern int preserve_hard_links;
extern int preserve_perms;
extern int preserve_devices;
extern int preserve_uid;
extern int preserve_gid;
extern int preserve_times;
extern int relative_paths;
extern int implied_dirs;
extern int copy_links;
extern int copy_unsafe_links;
extern int protocol_version;
extern int sanitize_paths;
extern int read_batch;
extern int write_batch;
extern struct exclude_list_struct exclude_list;
extern struct exclude_list_struct server_exclude_list;
extern struct exclude_list_struct local_exclude_list;
int io_error;
static char empty_sum[MD4_SUM_LENGTH];
static unsigned int file_struct_len;
static void clean_flist(struct file_list *flist, int strip_root, int no_dups);
static void output_flist(struct file_list *flist);
void init_flist(void)
{
struct file_struct f;
/* Figure out how big the file_struct is without trailing padding */
file_struct_len = offsetof(struct file_struct, flags) + sizeof f.flags;
}
static int show_filelist_p(void)
{
return verbose && (recurse || files_from) && !am_server;
}
static void start_filelist_progress(char *kind)
{
rprintf(FINFO, "%s ... ", kind);
if ((verbose > 1) || do_progress)
rprintf(FINFO, "\n");
rflush(FINFO);
}
static void emit_filelist_progress(const struct file_list *flist)
{
rprintf(FINFO, " %d files...\r", flist->count);
}
static void maybe_emit_filelist_progress(const struct file_list *flist)
{
if (do_progress && show_filelist_p() && ((flist->count % 100) == 0))
emit_filelist_progress(flist);
}
static void finish_filelist_progress(const struct file_list *flist)
{
if (do_progress) {
/* This overwrites the progress line */
rprintf(FINFO, "%d file%sto consider\n",
flist->count, flist->count == 1 ? " " : "s ");
} else
rprintf(FINFO, "done\n");
}
void show_flist_stats(void)
{
/* Nothing yet */
}
static void list_file_entry(struct file_struct *f)
{
char perms[11];
if (!f->basename)
/* this can happen if duplicate names were removed */
return;
permstring(perms, f->mode);
#if SUPPORT_LINKS
if (preserve_links && S_ISLNK(f->mode)) {
rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
perms,
(double) f->length, timestring(f->modtime),
f_name(f), f->u.link);
} else
#endif
rprintf(FINFO, "%s %11.0f %s %s\n",
perms,
(double) f->length, timestring(f->modtime),
f_name(f));
}
/**
* Stat either a symlink or its referent, depending on the settings of
* copy_links, copy_unsafe_links, etc.
*
* @retval -1 on error
*
* @retval 0 for success
*
* @post If @p path is a symlink, then @p linkbuf (of size @c
* MAXPATHLEN) contains the symlink target.
*
* @post @p buffer contains information about the link or the
* referrent as appropriate, if they exist.
**/
int readlink_stat(const char *path, STRUCT_STAT *buffer, char *linkbuf)
{
#if SUPPORT_LINKS
if (copy_links)
return do_stat(path, buffer);
if (do_lstat(path, buffer) == -1)
return -1;
if (S_ISLNK(buffer->st_mode)) {
int l = readlink((char *) path, linkbuf, MAXPATHLEN - 1);
if (l == -1)
return -1;
linkbuf[l] = 0;
if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
if (verbose > 1) {
rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
path, linkbuf);
}
return do_stat(path, buffer);
}
}
return 0;
#else
return do_stat(path, buffer);
#endif
}
int link_stat(const char *path, STRUCT_STAT * buffer)
{
#if SUPPORT_LINKS
if (copy_links)
return do_stat(path, buffer);
return do_lstat(path, buffer);
#else
return do_stat(path, buffer);
#endif
}
/*
* This function is used to check if a file should be included/excluded
* from the list of files based on its name and type etc. The value of
* exclude_level is set to either SERVER_EXCLUDES or ALL_EXCLUDES.
*/
static int check_exclude_file(char *fname, int is_dir, int exclude_level)
{
int rc;
#if 0 /* This currently never happens, so avoid a useless compare. */
if (exclude_level == NO_EXCLUDES)
return 0;
#endif
if (fname) {
/* never exclude '.', even if somebody does --exclude '*' */
if (fname[0] == '.' && !fname[1])
return 0;
/* Handle the -R version of the '.' dir. */
if (fname[0] == '/') {
int len = strlen(fname);
if (fname[len-1] == '.' && fname[len-2] == '/')
return 0;
}
}
if (server_exclude_list.head
&& check_exclude(&server_exclude_list, fname, is_dir) < 0)
return 1;
if (exclude_level != ALL_EXCLUDES)
return 0;
if (exclude_list.head
&& (rc = check_exclude(&exclude_list, fname, is_dir)) != 0)
return rc < 0;
if (local_exclude_list.head
&& check_exclude(&local_exclude_list, fname, is_dir) < 0)
return 1;
return 0;
}
/* used by the one_file_system code */
static dev_t filesystem_dev;
static void set_filesystem(char *fname)
{
STRUCT_STAT st;
if (link_stat(fname, &st) != 0)
return;
filesystem_dev = st.st_dev;
}
static int to_wire_mode(mode_t mode)
{
#if SUPPORT_LINKS
if (S_ISLNK(mode) && (_S_IFLNK != 0120000))
return (mode & ~(_S_IFMT)) | 0120000;
#endif
return (int) mode;
}
static mode_t from_wire_mode(int mode)
{
if ((mode & (_S_IFMT)) == 0120000 && (_S_IFLNK != 0120000))
return (mode & ~(_S_IFMT)) | _S_IFLNK;
return (mode_t) mode;
}
static void send_directory(int f, struct file_list *flist, char *dir);
static char *flist_dir;
static int flist_dir_len;
/**
* Make sure @p flist is big enough to hold at least @p flist->count
* entries.
**/
void flist_expand(struct file_list *flist)
{
void *new_ptr;
if (flist->count < flist->malloced)
return;
if (flist->malloced < FLIST_START)
flist->malloced = FLIST_START;
else if (flist->malloced >= FLIST_LINEAR)
flist->malloced += FLIST_LINEAR;
else
flist->malloced *= 2;
/*
* In case count jumped or we are starting the list
* with a known size just set it.
*/
if (flist->malloced < flist->count)
flist->malloced = flist->count;
if (flist->files) {
new_ptr = realloc_array(flist->files,
struct file_struct *, flist->malloced);
} else {
new_ptr = new_array(struct file_struct *, flist->malloced);
}
if (verbose >= 2) {
rprintf(FINFO, "[%s] expand file_list to %.0f bytes, did%s move\n",
who_am_i(),
(double) sizeof flist->files[0] * flist->malloced,
(new_ptr == flist->files) ? " not" : "");
}
flist->files = (struct file_struct **) new_ptr;
if (!flist->files)
out_of_memory("flist_expand");
}
void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
{
unsigned short flags;
static time_t modtime;
static mode_t mode;
static uint64 dev;
static dev_t rdev;
static uint32 rdev_major;
static uid_t uid;
static gid_t gid;
static char lastname[MAXPATHLEN];
char *fname, fbuf[MAXPATHLEN];
int l1, l2;
if (f == -1)
return;
if (!file) {
write_byte(f, 0);
modtime = 0, mode = 0;
dev = 0, rdev = makedev(0, 0);
rdev_major = 0;
uid = 0, gid = 0;
*lastname = '\0';
return;
}
io_write_phase = "send_file_entry";
fname = f_name_to(file, fbuf);
flags = base_flags;
if (file->mode == mode)
flags |= XMIT_SAME_MODE;
else
mode = file->mode;
if (preserve_devices) {
if (protocol_version < 28) {
if (IS_DEVICE(mode)) {
if (file->u.rdev == rdev)
flags |= XMIT_SAME_RDEV_pre28;
else
rdev = file->u.rdev;
} else
rdev = makedev(0, 0);
} else if (IS_DEVICE(mode)) {
rdev = file->u.rdev;
if ((uint32)major(rdev) == rdev_major)
flags |= XMIT_SAME_RDEV_MAJOR;
else
rdev_major = major(rdev);
if ((uint32)minor(rdev) <= 0xFFu)
flags |= XMIT_RDEV_MINOR_IS_SMALL;
}
}
if (file->uid == uid)
flags |= XMIT_SAME_UID;
else
uid = file->uid;
if (file->gid == gid)
flags |= XMIT_SAME_GID;
else
gid = file->gid;
if (file->modtime == modtime)
flags |= XMIT_SAME_TIME;
else
modtime = file->modtime;
#if SUPPORT_HARD_LINKS
if (file->link_u.idev) {
if (file->F_DEV == dev) {
if (protocol_version >= 28)
flags |= XMIT_SAME_DEV;
} else
dev = file->F_DEV;
flags |= XMIT_HAS_IDEV_DATA;
}
#endif
for (l1 = 0;
lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
l1++) {}
l2 = strlen(fname+l1);
if (l1 > 0)
flags |= XMIT_SAME_NAME;
if (l2 > 255)
flags |= XMIT_LONG_NAME;
/* We must make sure we don't send a zero flag byte or the
* other end will terminate the flist transfer. Note that
* the use of XMIT_TOP_DIR on a non-dir has no meaning, so
* it's harmless way to add a bit to the first flag byte. */
if (protocol_version >= 28) {
if (!flags && !S_ISDIR(mode))
flags |= XMIT_TOP_DIR;
if ((flags & 0xFF00) || !flags) {
flags |= XMIT_EXTENDED_FLAGS;
write_byte(f, flags);
write_byte(f, flags >> 8);
} else
write_byte(f, flags);
} else {
if (!(flags & 0xFF) && !S_ISDIR(mode))
flags |= XMIT_TOP_DIR;
if (!(flags & 0xFF))
flags |= XMIT_LONG_NAME;
write_byte(f, flags);
}
if (flags & XMIT_SAME_NAME)
write_byte(f, l1);
if (flags & XMIT_LONG_NAME)
write_int(f, l2);
else
write_byte(f, l2);
write_buf(f, fname + l1, l2);
write_longint(f, file->length);
if (!(flags & XMIT_SAME_TIME))
write_int(f, modtime);
if (!(flags & XMIT_SAME_MODE))
write_int(f, to_wire_mode(mode));
if (preserve_uid && !(flags & XMIT_SAME_UID)) {
if (!numeric_ids)
add_uid(uid);
write_int(f, uid);
}
if (preserve_gid && !(flags & XMIT_SAME_GID)) {
if (!numeric_ids)
add_gid(gid);
write_int(f, gid);
}
if (preserve_devices && IS_DEVICE(mode)) {
if (protocol_version < 28) {
if (!(flags & XMIT_SAME_RDEV_pre28))
write_int(f, (int)rdev);
} else {
if (!(flags & XMIT_SAME_RDEV_MAJOR))
write_int(f, major(rdev));
if (flags & XMIT_RDEV_MINOR_IS_SMALL)
write_byte(f, minor(rdev));
else
write_int(f, minor(rdev));
}
}
#if SUPPORT_LINKS
if (preserve_links && S_ISLNK(mode)) {
int len = strlen(file->u.link);
write_int(f, len);
write_buf(f, file->u.link, len);
}
#endif
#if SUPPORT_HARD_LINKS
if (flags & XMIT_HAS_IDEV_DATA) {
if (protocol_version < 26) {
/* 32-bit dev_t and ino_t */
write_int(f, dev);
write_int(f, file->F_INODE);
} else {
/* 64-bit dev_t and ino_t */
if (!(flags & XMIT_SAME_DEV))
write_longint(f, dev);
write_longint(f, file->F_INODE);
}
}
#endif
if (always_checksum) {
char *sum;
if (S_ISREG(mode))
sum = file->u.sum;
else if (protocol_version < 28) {
/* Prior to 28, we sent a useless set of nulls. */
sum = empty_sum;
} else
sum = NULL;
if (sum) {
write_buf(f, sum,
protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
}
}
strlcpy(lastname, fname, MAXPATHLEN);
io_write_phase = "unknown";
}
void receive_file_entry(struct file_struct **fptr, unsigned short flags,
struct file_list *flist, int f)
{
static time_t modtime;
static mode_t mode;
static uint64 dev;
static dev_t rdev;
static uint32 rdev_major;
static uid_t uid;
static gid_t gid;
static char lastname[MAXPATHLEN], *lastdir;
static int lastdir_len = -1;
char thisname[MAXPATHLEN];
unsigned int l1 = 0, l2 = 0;
int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
OFF_T file_length;
char *basename, *dirname, *bp;
struct file_struct *file;
if (!fptr) {
modtime = 0, mode = 0;
dev = 0, rdev = makedev(0, 0);
rdev_major = 0;
uid = 0, gid = 0;
*lastname = '\0';
return;
}
if (flags & XMIT_SAME_NAME)
l1 = read_byte(f);
if (flags & XMIT_LONG_NAME)
l2 = read_int(f);
else
l2 = read_byte(f);
if (l2 >= MAXPATHLEN - l1) {
rprintf(FERROR,
"overflow: flags=0x%x l1=%d l2=%d lastname=%s\n",
flags, l1, l2, lastname);
overflow("receive_file_entry");
}
strlcpy(thisname, lastname, l1 + 1);
read_sbuf(f, &thisname[l1], l2);
thisname[l1 + l2] = 0;
strlcpy(lastname, thisname, MAXPATHLEN);
clean_fname(thisname);
if (sanitize_paths)
sanitize_path(thisname, NULL);
if ((basename = strrchr(thisname, '/')) != NULL) {
dirname_len = ++basename - thisname; /* counts future '\0' */
if (lastdir_len == dirname_len - 1
&& strncmp(thisname, lastdir, lastdir_len) == 0) {
dirname = lastdir;
dirname_len = 0; /* indicates no copy is needed */
} else
dirname = thisname;
} else {
basename = thisname;
dirname = NULL;
dirname_len = 0;
}
basename_len = strlen(basename) + 1; /* count the '\0' */
file_length = read_longint(f);
if (!(flags & XMIT_SAME_TIME))
modtime = (time_t)read_int(f);
if (!(flags & XMIT_SAME_MODE))
mode = from_wire_mode(read_int(f));
if (preserve_uid && !(flags & XMIT_SAME_UID))
uid = (uid_t)read_int(f);
if (preserve_gid && !(flags & XMIT_SAME_GID))
gid = (gid_t)read_int(f);
if (preserve_devices) {
if (protocol_version < 28) {
if (IS_DEVICE(mode)) {
if (!(flags & XMIT_SAME_RDEV_pre28))
rdev = (dev_t)read_int(f);
} else
rdev = makedev(0, 0);
} else if (IS_DEVICE(mode)) {
uint32 rdev_minor;
if (!(flags & XMIT_SAME_RDEV_MAJOR))
rdev_major = read_int(f);
if (flags & XMIT_RDEV_MINOR_IS_SMALL)
rdev_minor = read_byte(f);
else
rdev_minor = read_int(f);
rdev = makedev(rdev_major, rdev_minor);
}
}
#if SUPPORT_LINKS
if (preserve_links && S_ISLNK(mode)) {
linkname_len = read_int(f) + 1; /* count the '\0' */
if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
rprintf(FERROR, "overflow: linkname_len=%d\n",
linkname_len - 1);
overflow("receive_file_entry");
}
}
else
#endif
linkname_len = 0;
sum_len = always_checksum && S_ISREG(mode) ? MD4_SUM_LENGTH : 0;
alloc_len = file_struct_len + dirname_len + basename_len
+ linkname_len + sum_len;
bp = pool_alloc(flist->file_pool, alloc_len, "receive_file_entry");
file = *fptr = (struct file_struct *)bp;
memset(bp, 0, file_struct_len);
bp += file_struct_len;
file->flags = flags & XMIT_TOP_DIR ? FLAG_TOP_DIR : 0;
file->modtime = modtime;
file->length = file_length;
file->mode = mode;
file->uid = uid;
file->gid = gid;
if (dirname_len) {
file->dirname = lastdir = bp;
lastdir_len = dirname_len - 1;
memcpy(bp, dirname, dirname_len - 1);
bp += dirname_len;
bp[-1] = '\0';
} else if (dirname)
file->dirname = dirname;
file->basename = bp;
memcpy(bp, basename, basename_len);
bp += basename_len;
if (preserve_devices && IS_DEVICE(mode))
file->u.rdev = rdev;
#if SUPPORT_LINKS
if (linkname_len) {
file->u.link = bp;
read_sbuf(f, bp, linkname_len - 1);
if (sanitize_paths)
sanitize_path(bp, lastdir);
bp += linkname_len;
}
#endif
#if SUPPORT_HARD_LINKS
if (preserve_hard_links && protocol_version < 28 && S_ISREG(mode))
flags |= XMIT_HAS_IDEV_DATA;
if (flags & XMIT_HAS_IDEV_DATA) {
uint64 inode;
if (protocol_version < 26) {
dev = read_int(f);
inode = read_int(f);
} else {
if (!(flags & XMIT_SAME_DEV))
dev = read_longint(f);
inode = read_longint(f);
}
if (flist->hlink_pool) {
file->link_u.idev = pool_talloc(flist->hlink_pool,
struct idev, 1, "inode_table");
file->F_INODE = inode;
file->F_DEV = dev;
}
}
#endif
if (always_checksum) {
char *sum;
if (sum_len) {
file->u.sum = sum = bp;
/*bp += sum_len;*/
} else if (protocol_version < 28) {
/* Prior to 28, we get a useless set of nulls. */
sum = empty_sum;
} else
sum = NULL;
if (sum) {
read_buf(f, sum,
protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
}
}
if (!preserve_perms) {
extern int orig_umask;
/* set an appropriate set of permissions based on original
* permissions and umask. This emulates what GNU cp does */
file->mode &= ~orig_umask;
}
}
/**
* Create a file_struct for a named file by reading its stat()
* information and performing extensive checks against global
* options.
*
* @return the new file, or NULL if there was an error or this file
* should be excluded.
*
* @todo There is a small optimization opportunity here to avoid
* stat()ing the file in some circumstances, which has a certain cost.
* We are called immediately after doing readdir(), and so we may
* already know the d_type of the file. We could for example avoid
* statting directories if we're not recursing, but this is not a very
* important case. Some systems may not have d_type.
**/
struct file_struct *make_file(char *fname,
struct file_list *flist, int exclude_level)
{
static char *lastdir;
static int lastdir_len = -1;
struct file_struct *file;
STRUCT_STAT st;
char sum[SUM_LENGTH];
char thisname[MAXPATHLEN];
char linkname[MAXPATHLEN];
int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
char *basename, *dirname, *bp;
unsigned short flags = 0;
if (!flist) /* lastdir isn't valid if flist is NULL */
lastdir_len = -1;
if (strlcpy(thisname, fname, sizeof thisname)
>= sizeof thisname - flist_dir_len) {
rprintf(FINFO, "skipping overly long name: %s\n", fname);
return NULL;
}
clean_fname(thisname);
if (sanitize_paths)
sanitize_path(thisname, NULL);
memset(sum, 0, SUM_LENGTH);
if (readlink_stat(thisname, &st, linkname) != 0) {
int save_errno = errno;
if (errno == ENOENT) {
enum logcode c = am_daemon && protocol_version < 28
? FERROR : FINFO;
/* either symlink pointing nowhere or file that
* was removed during rsync run; see if excluded
* before reporting an error */
if (exclude_level != NO_EXCLUDES
&& check_exclude_file(thisname, 0, exclude_level)) {
/* file is excluded anyway, ignore silently */
return NULL;
}
io_error |= IOERR_VANISHED;
rprintf(c, "file has vanished: %s\n",
full_fname(thisname));
}
else {
io_error |= IOERR_GENERAL;
rprintf(FERROR, "readlink %s failed: %s\n",
full_fname(thisname), strerror(save_errno));
}
return NULL;
}
/* backup.c calls us with exclude_level set to NO_EXCLUDES. */
if (exclude_level == NO_EXCLUDES)
goto skip_excludes;
if (S_ISDIR(st.st_mode) && !recurse && !files_from) {
rprintf(FINFO, "skipping directory %s\n", thisname);
return NULL;
}
/* We only care about directories because we need to avoid recursing
* into a mount-point directory, not to avoid copying a symlinked
* file if -L (or similar) was specified. */
if (one_file_system && st.st_dev != filesystem_dev
&& S_ISDIR(st.st_mode))
flags |= FLAG_MOUNT_POINT;
if (check_exclude_file(thisname, S_ISDIR(st.st_mode) != 0, exclude_level))
return NULL;
if (lp_ignore_nonreadable(module_id) && access(thisname, R_OK) != 0)
return NULL;
skip_excludes:
if (verbose > 2) {
rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
who_am_i(), thisname, exclude_level);
}
if ((basename = strrchr(thisname, '/')) != NULL) {
dirname_len = ++basename - thisname; /* counts future '\0' */
if (lastdir_len == dirname_len - 1
&& strncmp(thisname, lastdir, lastdir_len) == 0) {
dirname = lastdir;
dirname_len = 0; /* indicates no copy is needed */
} else
dirname = thisname;
} else {
basename = thisname;
dirname = NULL;
dirname_len = 0;
}
basename_len = strlen(basename) + 1; /* count the '\0' */
#if SUPPORT_LINKS
linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
#else
linkname_len = 0;
#endif
sum_len = always_checksum && S_ISREG(st.st_mode) ? MD4_SUM_LENGTH : 0;
alloc_len = file_struct_len + dirname_len + basename_len
+ linkname_len + sum_len;
if (flist) {
bp = pool_alloc(flist->file_pool, alloc_len,
"receive_file_entry");
} else {
if (!(bp = new_array(char, alloc_len)))
out_of_memory("receive_file_entry");
}
file = (struct file_struct *)bp;
memset(bp, 0, file_struct_len);
bp += file_struct_len;
file->flags = flags;
file->modtime = st.st_mtime;
file->length = st.st_size;
file->mode = st.st_mode;
file->uid = st.st_uid;
file->gid = st.st_gid;
#if SUPPORT_HARD_LINKS
if (flist && flist->hlink_pool) {
if (protocol_version < 28) {
if (S_ISREG(st.st_mode))
file->link_u.idev = pool_talloc(
flist->hlink_pool, struct idev, 1,
"inode_table");
} else {
if (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
file->link_u.idev = pool_talloc(
flist->hlink_pool, struct idev, 1,
"inode_table");
}
}
if (file->link_u.idev) {
file->F_DEV = st.st_dev;
file->F_INODE = st.st_ino;
}
#endif
if (dirname_len) {
file->dirname = lastdir = bp;
lastdir_len = dirname_len - 1;
memcpy(bp, dirname, dirname_len - 1);
bp += dirname_len;
bp[-1] = '\0';
} else if (dirname)
file->dirname = dirname;
file->basename = bp;
memcpy(bp, basename, basename_len);
bp += basename_len;
#ifdef HAVE_STRUCT_STAT_ST_RDEV
if (preserve_devices && IS_DEVICE(st.st_mode))
file->u.rdev = st.st_rdev;
#endif
#if SUPPORT_LINKS
if (linkname_len) {
file->u.link = bp;
memcpy(bp, linkname, linkname_len);
bp += linkname_len;
}
#endif
if (sum_len) {
file->u.sum = bp;
file_checksum(thisname, bp, st.st_size);
/*bp += sum_len;*/
}
file->basedir = flist_dir;
if (!S_ISDIR(st.st_mode))
stats.total_size += st.st_size;
return file;
}
void send_file_name(int f, struct file_list *flist, char *fname,
int recursive, unsigned short base_flags)
{
struct file_struct *file;
char fbuf[MAXPATHLEN];
extern int delete_excluded;
/* f is set to -1 when calculating deletion file list */
file = make_file(fname, flist,
f == -1 && delete_excluded? SERVER_EXCLUDES : ALL_EXCLUDES);
if (!file)
return;
maybe_emit_filelist_progress(flist);
flist_expand(flist);
if (write_batch)
file->flags |= FLAG_TOP_DIR;
if (file->basename[0]) {
flist->files[flist->count++] = file;
send_file_entry(file, f, base_flags);
}
if (recursive && S_ISDIR(file->mode)
&& !(file->flags & FLAG_MOUNT_POINT)) {
struct exclude_list_struct last_list = local_exclude_list;
local_exclude_list.head = local_exclude_list.tail = NULL;
send_directory(f, flist, f_name_to(file, fbuf));
free_exclude_list(&local_exclude_list);
local_exclude_list = last_list;
}
}
static void send_directory(int f, struct file_list *flist, char *dir)
{
DIR *d;
struct dirent *di;
char fname[MAXPATHLEN];
unsigned int offset;
char *p;
d = opendir(dir);
if (!d) {
io_error |= IOERR_GENERAL;
rprintf(FERROR, "opendir %s failed: %s\n",
full_fname(dir), strerror(errno));
return;
}
offset = strlcpy(fname, dir, MAXPATHLEN);
p = fname + offset;
if (offset >= MAXPATHLEN || p[-1] != '/') {
if (offset >= MAXPATHLEN - 1) {
io_error |= IOERR_GENERAL;
rprintf(FERROR, "skipping long-named directory: %s\n",
full_fname(fname));
closedir(d);
return;
}
*p++ = '/';
offset++;
}
if (cvs_exclude) {
if (strlcpy(p, ".cvsignore", MAXPATHLEN - offset)
< MAXPATHLEN - offset) {
add_exclude_file(&local_exclude_list, fname,
XFLG_WORD_SPLIT | XFLG_NO_PREFIXES);
} else {
io_error |= IOERR_GENERAL;
rprintf(FINFO,
"cannot cvs-exclude in long-named directory %s\n",
full_fname(fname));
}
}
for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
char *dname = d_name(di);
if (dname[0] == '.' && (dname[1] == '\0'
|| (dname[1] == '.' && dname[2] == '\0')))
continue;
if (strlcpy(p, dname, MAXPATHLEN - offset) < MAXPATHLEN - offset)
send_file_name(f, flist, fname, recurse, 0);
else {
io_error |= IOERR_GENERAL;
rprintf(FINFO,
"cannot send long-named file %s\n",
full_fname(fname));
}
}
if (errno) {
io_error |= IOERR_GENERAL;
rprintf(FERROR, "readdir(%s): (%d) %s\n",
dir, errno, strerror(errno));
}
closedir(d);
}
/**
* The delete_files() function in receiver.c sets f to -1 so that we just
* construct the file list in memory without sending it over the wire. It
* also has the side-effect of ignoring user-excludes if delete_excluded
* is set (so that the delete list includes user-excluded files).
**/
struct file_list *send_file_list(int f, int argc, char *argv[])
{
int l;
STRUCT_STAT st;
char *p, *dir, olddir[sizeof curr_dir];
char lastpath[MAXPATHLEN] = "";
struct file_list *flist;
int64 start_write;
int use_ff_fd = 0;
if (show_filelist_p() && f != -1)
start_filelist_progress("building file list");
start_write = stats.total_written;
flist = flist_new(f == -1 ? WITHOUT_HLINK : WITH_HLINK,
"send_file_list");
if (f != -1) {
io_start_buffering_out(f);
if (filesfrom_fd >= 0) {
if (argv[0] && !push_dir(argv[0])) {
rprintf(FERROR, "push_dir %s failed: %s\n",
full_fname(argv[0]), strerror(errno));
exit_cleanup(RERR_FILESELECT);
}
use_ff_fd = 1;
}
}
while (1) {
char fname2[MAXPATHLEN];
char *fname = fname2;
if (use_ff_fd) {
if (read_filesfrom_line(filesfrom_fd, fname) == 0)
break;
sanitize_path(fname, NULL);
} else {
if (argc-- == 0)
break;
strlcpy(fname, *argv++, MAXPATHLEN);
if (sanitize_paths)
sanitize_path(fname, NULL);
}
l = strlen(fname);
if (fname[l - 1] == '/') {
if (l == 2 && fname[0] == '.') {
/* Turn "./" into just "." rather than "./." */
fname[1] = '\0';
} else if (l < MAXPATHLEN) {
fname[l++] = '.';
fname[l] = '\0';
}
}
if (link_stat(fname, &st) != 0) {
if (f != -1) {
io_error |= IOERR_GENERAL;
rprintf(FERROR, "link_stat %s failed: %s\n",
full_fname(fname), strerror(errno));
}
continue;
}
if (S_ISDIR(st.st_mode) && !recurse && !files_from) {
rprintf(FINFO, "skipping directory %s\n", fname);
continue;
}
dir = NULL;
olddir[0] = '\0';
if (!relative_paths) {
p = strrchr(fname, '/');
if (p) {
*p = 0;
if (p == fname)
dir = "/";
else
dir = fname;
fname = p + 1;
}
} else if (f != -1 && implied_dirs && (p=strrchr(fname,'/')) && p != fname) {
/* this ensures we send the intermediate directories,
thus getting their permissions right */
char *lp = lastpath, *fn = fname, *slash = fname;
*p = 0;
/* Skip any initial directories in our path that we
* have in common with lastpath. */
while (*fn && *lp == *fn) {
if (*fn == '/')
slash = fn;
lp++, fn++;
}
*p = '/';
if (fn != p || (*lp && *lp != '/')) {
int copy_links_saved = copy_links;
int recurse_saved = recurse;
copy_links = copy_unsafe_links;
/* set recurse to 1 to prevent make_file
* from ignoring directory, but still
* turn off the recursive parameter to
* send_file_name */
recurse = 1;
while ((slash = strchr(slash+1, '/')) != 0) {
*slash = 0;
send_file_name(f, flist, fname, 0, 0);
*slash = '/';
}
copy_links = copy_links_saved;
recurse = recurse_saved;
*p = 0;
strlcpy(lastpath, fname, sizeof lastpath);
*p = '/';
}
}
if (!*fname)
fname = ".";
if (dir && *dir) {
static char *lastdir;
static int lastdir_len;
strcpy(olddir, curr_dir); /* can't overflow */
if (!push_dir(dir)) {
io_error |= IOERR_GENERAL;
rprintf(FERROR, "push_dir %s failed: %s\n",
full_fname(dir), strerror(errno));
continue;
}
if (lastdir && strcmp(lastdir, dir) == 0) {
flist_dir = lastdir;
flist_dir_len = lastdir_len;
} else {
flist_dir = lastdir = strdup(dir);
flist_dir_len = lastdir_len = strlen(dir);
}
}
if (one_file_system)
set_filesystem(fname);
send_file_name(f, flist, fname, recurse, XMIT_TOP_DIR);
if (olddir[0]) {
flist_dir = NULL;
flist_dir_len = 0;
if (!pop_dir(olddir)) {
rprintf(FERROR, "pop_dir %s failed: %s\n",
full_fname(dir), strerror(errno));
exit_cleanup(RERR_FILESELECT);
}
}
}
if (f != -1) {
send_file_entry(NULL, f, 0);
if (show_filelist_p())
finish_filelist_progress(flist);
}
if (flist->hlink_pool) {
pool_destroy(flist->hlink_pool);
flist->hlink_pool = NULL;
}
clean_flist(flist, 0, 0);
if (f != -1) {
/* Now send the uid/gid list. This was introduced in
* protocol version 15 */
send_uid_list(f);
/* send the io_error flag */
write_int(f, lp_ignore_errors(module_id) ? 0 : io_error);
io_end_buffering();
stats.flist_size = stats.total_written - start_write;
stats.num_files = flist->count;
if (write_batch)
write_batch_flist_info(flist->count, flist->files);
}
if (verbose > 3)
output_flist(flist);
if (verbose > 2)
rprintf(FINFO, "send_file_list done\n");
return flist;
}
struct file_list *recv_file_list(int f)
{
struct file_list *flist;
unsigned short flags;
int64 start_read;
extern int list_only;
if (show_filelist_p())
start_filelist_progress("receiving file list");
start_read = stats.total_read;
flist = flist_new(WITH_HLINK, "recv_file_list");
flist->count = 0;
flist->malloced = 1000;
flist->files = new_array(struct file_struct *, flist->malloced);
if (!flist->files)
goto oom;
while ((flags = read_byte(f)) != 0) {
int i = flist->count;
flist_expand(flist);
if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
flags |= read_byte(f) << 8;
receive_file_entry(&flist->files[i], flags, flist, f);
if (S_ISREG(flist->files[i]->mode))
stats.total_size += flist->files[i]->length;
flist->count++;
maybe_emit_filelist_progress(flist);
if (verbose > 2) {
rprintf(FINFO, "recv_file_name(%s)\n",
f_name(flist->files[i]));
}
}
receive_file_entry(NULL, 0, NULL, 0); /* Signal that we're done. */
if (verbose > 2)
rprintf(FINFO, "received %d names\n", flist->count);
if (show_filelist_p())
finish_filelist_progress(flist);
clean_flist(flist, relative_paths, 1);
if (f != -1) {
/* Now send the uid/gid list. This was introduced in
* protocol version 15 */
recv_uid_list(f, flist);
if (!read_batch) {
/* Recv the io_error flag */
if (lp_ignore_errors(module_id) || ignore_errors)
read_int(f);
else
io_error |= read_int(f);
}
}
if (verbose > 3)
output_flist(flist);
if (list_only) {
int i;
for (i = 0; i < flist->count; i++)
list_file_entry(flist->files[i]);
}
if (verbose > 2)
rprintf(FINFO, "recv_file_list done\n");
stats.flist_size = stats.total_read - start_read;
stats.num_files = flist->count;
return flist;
oom:
out_of_memory("recv_file_list");
return NULL; /* not reached */
}
int file_compare(struct file_struct **file1, struct file_struct **file2)
{
struct file_struct *f1 = *file1;
struct file_struct *f2 = *file2;
if (!f1->basename && !f2->basename)
return 0;
if (!f1->basename)
return -1;
if (!f2->basename)
return 1;
if (f1->dirname == f2->dirname)
return u_strcmp(f1->basename, f2->basename);
return f_name_cmp(f1, f2);
}
int flist_find(struct file_list *flist, struct file_struct *f)
{
int low = 0, high = flist->count - 1;
while (high >= 0 && !flist->files[high]->basename) high--;
if (high < 0)
return -1;
while (low != high) {
int mid = (low + high) / 2;
int ret = file_compare(&flist->files[flist_up(flist, mid)],&f);
if (ret == 0)
return flist_up(flist, mid);
if (ret > 0)
high = mid;
else
low = mid + 1;
}
if (file_compare(&flist->files[flist_up(flist, low)], &f) == 0)
return flist_up(flist, low);
return -1;
}
/*
* Free up any resources a file_struct has allocated
* and clear the file.
*/
void clear_file(int i, struct file_list *flist)
{
if (flist->hlink_pool && flist->files[i]->link_u.idev)
pool_free(flist->hlink_pool, 0, flist->files[i]->link_u.idev);
memset(flist->files[i], 0, file_struct_len);
}
/*
* allocate a new file list
*/
struct file_list *flist_new(int with_hlink, char *msg)
{
struct file_list *flist;
flist = new(struct file_list);
if (!flist)
out_of_memory(msg);
memset(flist, 0, sizeof (struct file_list));
if (!(flist->file_pool = pool_create(FILE_EXTENT, 0,
out_of_memory, POOL_INTERN)))
out_of_memory(msg);
#if SUPPORT_HARD_LINKS
if (with_hlink && preserve_hard_links) {
if (!(flist->hlink_pool = pool_create(HLINK_EXTENT,
sizeof (struct idev), out_of_memory, POOL_INTERN)))
out_of_memory(msg);
}
#endif
return flist;
}
/*
* free up all elements in a flist
*/
void flist_free(struct file_list *flist)
{
pool_destroy(flist->file_pool);
pool_destroy(flist->hlink_pool);
free(flist->files);
free(flist);
}
/*
* This routine ensures we don't have any duplicate names in our file list.
* duplicate names can cause corruption because of the pipelining
*/
static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
{
int i, prev_i = 0;
if (!flist || flist->count == 0)
return;
qsort(flist->files, flist->count,
sizeof flist->files[0], (int (*)()) file_compare);
for (i = no_dups? 0 : flist->count; i < flist->count; i++) {
if (flist->files[i]->basename) {
prev_i = i;
break;
}
}
while (++i < flist->count) {
if (!flist->files[i]->basename)
continue;
if (f_name_cmp(flist->files[i], flist->files[prev_i]) == 0) {
if (verbose > 1 && !am_server) {
rprintf(FINFO,
"removing duplicate name %s from file list %d\n",
f_name(flist->files[i]), i);
}
/* Make sure that if we unduplicate '.', that we don't
* lose track of a user-specified starting point (or
* else deletions will mysteriously fail with -R). */
if (flist->files[i]->flags & FLAG_TOP_DIR)
flist->files[prev_i]->flags |= FLAG_TOP_DIR;
clear_file(i, flist);
} else
prev_i = i;
}
if (strip_root) {
/* we need to strip off the root directory in the case
of relative paths, but this must be done _after_
the sorting phase */
for (i = 0; i < flist->count; i++) {
if (flist->files[i]->dirname &&
flist->files[i]->dirname[0] == '/') {
memmove(&flist->files[i]->dirname[0],
&flist->files[i]->dirname[1],
strlen(flist->files[i]->dirname));
}
if (flist->files[i]->dirname &&
!flist->files[i]->dirname[0]) {
flist->files[i]->dirname = NULL;
}
}
}
}
static void output_flist(struct file_list *flist)
{
char uidbuf[16], gidbuf[16];
struct file_struct *file;
int i;
for (i = 0; i < flist->count; i++) {
file = flist->files[i];
if (am_root && preserve_uid)
sprintf(uidbuf, " uid=%ld", (long)file->uid);
else
*uidbuf = '\0';
if (preserve_gid && file->gid != GID_NONE)
sprintf(gidbuf, " gid=%ld", (long)file->gid);
else
*gidbuf = '\0';
rprintf(FINFO, "[%s] i=%d %s %s %s mode=0%o len=%.0f%s%s\n",
who_am_i(), i, NS(file->basedir), NS(file->dirname),
NS(file->basename), (int) file->mode,
(double) file->length, uidbuf, gidbuf);
}
}
enum fnc_state { fnc_DIR, fnc_SLASH, fnc_BASE };
/* Compare the names of two file_struct entities, just like strcmp()
* would do if it were operating on the joined strings. We assume
* that there are no 0-length strings.
*/
int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
{
int dif;
const uchar *c1, *c2;
enum fnc_state state1, state2;
if (!f1 || !f1->basename) {
if (!f2 || !f2->basename)
return 0;
return -1;
}
if (!f2 || !f2->basename)
return 1;
if (!(c1 = (uchar*)f1->dirname)) {
state1 = fnc_BASE;
c1 = (uchar*)f1->basename;
} else
state1 = fnc_DIR;
if (!(c2 = (uchar*)f2->dirname)) {
state2 = fnc_BASE;
c2 = (uchar*)f2->basename;
} else
state2 = fnc_DIR;
while (1) {
if ((dif = (int)*c1 - (int)*c2) != 0)
break;
if (!*++c1) {
switch (state1) {
case fnc_DIR:
state1 = fnc_SLASH;
c1 = (uchar*)"/";
break;
case fnc_SLASH:
state1 = fnc_BASE;
c1 = (uchar*)f1->basename;
break;
case fnc_BASE:
break;
}
}
if (!*++c2) {
switch (state2) {
case fnc_DIR:
state2 = fnc_SLASH;
c2 = (uchar*)"/";
break;
case fnc_SLASH:
state2 = fnc_BASE;
c2 = (uchar*)f2->basename;
break;
case fnc_BASE:
if (!*c1)
return 0;
break;
}
}
}
return dif;
}
/* Return a copy of the full filename of a flist entry, using the indicated
* buffer. No size-checking is done because we checked the size when creating
* the file_struct entry.
*/
char *f_name_to(struct file_struct *f, char *fbuf)
{
if (!f || !f->basename)
return NULL;
if (f->dirname) {
int len = strlen(f->dirname);
memcpy(fbuf, f->dirname, len);
fbuf[len] = '/';
strcpy(fbuf + len + 1, f->basename);
} else
strcpy(fbuf, f->basename);
return fbuf;
}
/* Like f_name_to(), but we rotate through 5 static buffers of our own.
*/
char *f_name(struct file_struct *f)
{
static char names[5][MAXPATHLEN];
static unsigned int n;
n = (n + 1) % (sizeof names / sizeof names[0]);
return f_name_to(f, names[n]);
}
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