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Added the --checksum-seed option.

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This commit is contained in:
Wayne Davison
2004-05-21 09:44:32 +00:00
parent e51094b721
commit c8d895de26
2 changed files with 23 additions and 0 deletions
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8
options.c
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@@ -290,6 +290,7 @@ void usage(enum logcode F)
rprintf(F," --bwlimit=KBPS limit I/O bandwidth, KBytes per second\n");
rprintf(F," --write-batch=PREFIX write batch fileset starting with PREFIX\n");
rprintf(F," --read-batch=PREFIX read batch fileset starting with PREFIX\n");
rprintf(F," --checksum-seed=NUM set block/file checksum seed\n");
#ifdef INET6
rprintf(F," -4 --ipv4 prefer IPv4\n");
rprintf(F," -6 --ipv6 prefer IPv6\n");
@@ -386,6 +387,7 @@ static struct poptOption long_options[] = {
{"from0", '0', POPT_ARG_NONE, &eol_nulls, 0, 0, 0},
{"no-implied-dirs", 0, POPT_ARG_VAL, &implied_dirs, 0, 0, 0 },
{"protocol", 0, POPT_ARG_INT, &protocol_version, 0, 0, 0 },
{"checksum-seed", 0, POPT_ARG_INT, &checksum_seed, 0, 0, 0 },
#ifdef INET6
{"ipv4", '4', POPT_ARG_VAL, &default_af_hint, AF_INET, 0, 0 },
{"ipv6", '6', POPT_ARG_VAL, &default_af_hint, AF_INET6, 0, 0 },
@@ -911,6 +913,12 @@ void server_options(char **args,int *argc)
args[ac++] = arg;
}
if (checksum_seed) {
if (asprintf(&arg, "--checksum_seed=%d", checksum_seed) < 0)
goto oom;
args[ac++] = arg;
}
if (keep_partial)
args[ac++] = "--partial";

15
rsync.yo
View File

@@ -348,6 +348,7 @@ verb(
--bwlimit=KBPS limit I/O bandwidth, KBytes per second
--write-batch=PREFIX write batch fileset starting with PREFIX
--read-batch=PREFIX read batch fileset starting with PREFIX
--checksum-seed=NUM set block/file checksum seed
-4 --ipv4 prefer IPv4
-6 --ipv6 prefer IPv6
-h, --help show this help screen
@@ -908,6 +909,20 @@ versions of Linux to work around an IPv6 bug in the kernel (if you see
an "address already in use" error when nothing else is using the port,
try specifying --ipv6 or --ipv4 when starting the daemon).
dit(bf(--checksum-seed=NUM)) Set the MD4 checksum seed to the integer
NUM. This 4 byte checksum seed is included in each block and file
MD4 checksum calculation. By default the checksum seed is generated
by the server and defaults to the current time(), or 32761 if
bf(--write-batch) or bf(--read-batch) are specified. This option
is used to set a specific checksum seed, which is useful for
applications that want repeatable block and file checksums, or
in the case where the user wants a more random checksum seed.
Note that setting NUM to 0 causes rsync to use the default of time()
for checksum seed. Note also that bf(--write-batch) and bf(--read-batch)
set the checksum seed to 32761, so bf(--checksum-seed=NUM) needs to
follow these options if you want to specify a different checksum
seed in batch mode.
enddit()
manpagesection(EXCLUDE PATTERNS)