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zfs send does not handle invalid input gracefully

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Due to some changes introduced in 30af21b 'zfs send' can crash when
provided with invalid inputs: this change attempts to add more checks
to the affected code paths.

Reviewed-by: Attila Fülöp <attila@fueloep.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #9001
This commit is contained in:
loli10K
2019-07-09 00:10:23 +02:00
committed by Brian Behlendorf
parent f664f1ee7f
commit 1d20b763bb
2 changed files with 11 additions and 1 deletions
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cmd/zfs/zfs_main.c
+5 -1
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@@ -4338,7 +4338,11 @@ zfs_do_send(int argc, char **argv)
return (1);
}
cp = strchr(argv[0], '@');
if ((cp = strchr(argv[0], '@')) == NULL) {
(void) fprintf(stderr, gettext("Error: "
"Unsupported flag with filesystem or bookmark.\n"));
return (1);
}
*cp = '\0';
toname = cp + 1;
zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);