https://bugzilla.samba.org/show_bug.cgi?id=4037
Summary: Rsync should obey --keep-dirlinks when searching basis
dirs
Product: rsync
Version: 2.6.9
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P3
Component: core
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
QAContact: [EMAIL PROTECTED]
Currently, when rsync searches for a basis file in an alternate basis directory
specified with a --*-dest option, it blindly follows the file-list path from
the top of the alternate basis directory. This might be the wrong thing to do
if the basis directory contains symlinks. The script that I will soon attach
demonstrates how rsync's behavior might result in a corrupt backup.
I propose that rsync should obey the --keep-dirlinks setting when searching for
basis files. If --keep-dirlinks is disabled, rsync would have to lstat every
proper prefix of the path under the basis dir to make sure symlinks are not
accidentally being followed. For efficiency, this check should be done only
once per directory. It would fit nicely in the per-directory initialization,
near line 911 of generator.c.
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