Bugzilla – Bug 790
getfacl 2.2.47 follows symlinks, even without -L
Last modified: 2014-02-02 20:27:24 CST
The current version of getfacl (2.2.47) seems to ignore the physical option. It
always follow all symbolic links.
sesr10 /# getfacl --skip-base -RP files/home
getfacl: files/home/johana/.wine/dosdevices/z:/usr/lib64/klibc/include/asm: No
such file or directory
getfacl: files/home/johana/.wine/dosdevices/z:/usr/lib/klibc/include/asm: No
such file or directory
getfacl: files/home/johana/.wine/dosdevices/z:/home/joga: Permission denied
z: is a symbolic link to / created by Wine...
It seems that setfacl also ignores this option (or rather, follows symlinks even
when -L is not specified, -P only applies to symlinks specified on the
commandline), which can be rather nasty.
-P does work properly without -R.
This bug has been fixed already in CVS
Any chance of releasing this fix anytime soon? IMHO it's quite a critical bug,
since it can mess up carefully planned permissions easily.
On second thought, the fix is still not complete. The new version now correctly
refrains from touching and traversing the symlink, but it still stats it (not
This results in errors for broken symlinks, which are annoying and confusing.
$ mkdir foo; ln -s /nonexistent foo/bar
$ getfacl -R foo/
getfacl: foo//bar: No such file or directory
$ cd foo;
$ getfacl -P bar
getfacl: bar: No such file or directory
The cause for this is that walk_tree_rec always stats a symlink, then sets the
WALK_TREE_SYMLINK flag, which is then used by both do_set (in setfacl) and
do_print (in getfacl) to ignore the file.
The attached patch fixe this by making do_set and do_print first check for
symlinks that don't need to be followed and making a quick exit, and then print
an error afterwards.
IMHO this patch is still quite hacky, and the stat on the symlink should never
happen, nor should do_print or do_set be called on symlinks that are not
considered. However, this approach is slightly more flexible for future changes,
Created attachment 247 [details]
Prevent errors for dead symlinks that we're not touching anyway
Thanks for the bug report and proposed patch. I've fixed it in a slightly less hackish way in this commit:
Author: Andreas Gruenbacher <firstname.lastname@example.org>
Date: Tue Jun 23 00:29:45 2009 +0200
Make sure that getfacl -R only calls stat(2) on symlinks when it needs to
This fixes http://oss.sgi.com/bugzilla/show_bug.cgi?id=790
"getfacl follows symlinks, even without -L".
(In reply to comment #5)
> Thanks for the bug report and proposed patch. I've fixed it in a slightly less
> hackish way in this commit:
This fix is available in 2.2.49. See the new upstream repo releases at:
*** Bug 260998 has been marked as a duplicate of this bug. ***
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Marked for reference. Resolved as fixed @bugzilla.