On Thu, 21 May 2009, Gabor HALASZ wrote:
> Cristian Ionescu-Idbohrn wrote:
> > On Wed, 20 May 2009, Gabor HALASZ wrote:
> >
> > > I have a little problem with chmod applet. The gnu verion of chmod
> > > command don't care about dead symlinks:
> > >
> > > ga-k8nf-9-1:~# ln -s nowhere /tmp/dead_link
> > > ga-k8nf-9-1:~# chmod +x /tmp/dead_link; echo ${?}
> > > 0
> >
> > Mine does:
> >
> > $ chmod -x dead_link
> > chmod: cannot operate on dangling symlink `dead_link'
> > zsh: exit 1 chmod -x dead_link
>
> Interesting :), but my problem is the return value of busybox's chmod -f
> +x.
Hmm... What would you like it to do?
Coreutils chmod version (5.97) is buggy. Yes, I found a box with that
particular coreutils version). Later coreutils versions seem to handle
the situation as documented:
$ man 1 chmod
chmod never changes the permissions of symbolic links; the chmod system
call cannot change their permissions. This is not a problem since the
permissions of symbolic links are never used. However, for each sym-
bolic link listed on the command line, chmod changes the permissions of
the pointed-to file.
sometime around here:
2007-09-07 Jim Meyering <j...@meyering.net>
chmod: don't ignore a dangling symlink
* NEWS: Mention the bug fix.
* src/chmod.c (process_file): Handle the case of FTS_SLNONE,
i.e., give a diagnostic saying we cannot operate on such a file.
* tests/chmod/thru-dangling: Compare new stderr output with expected.
2007-09-07 Bob Proulx <b...@proulx.com>
Add a test: demonstrate that chmod ignores a dangling symlink
* tests/chmod/thru-dangling: New test. Fails.
* tests/chmod/Makefile.am (TESTS): Add thru-dangling.
and announced in NEWS:
* Noteworthy changes in release 6.9.90 (2007-12-01) [beta]
...
** Bug fixes
chmod no longer ignores a dangling symlink. Now, chmod fails
with a diagnostic saying that it cannot operate on such a file.
[bug introduced in coreutils-5.1.0]
What busybox chmod does is right.
Cheers,
--
Cristian
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