2011/5/31 PÃdraig Brady <P@xxxxxxxxxxxxxx>:
> On 31/05/11 01:14, James Youngman wrote:
>> On Tue, Apr 5, 2011 at 1:36 PM, Philipp Thomas <pth@xxxxxxx> wrote:
>>> GNU find will not recognize file systems of type autofs on newer Linux
>>> kernels as autofs entries are only listed in /proc/mounts and mountlist.c
>>> includes glibc mntent.h which takes the _PATH_MOUNTED from paths.h and that
>>> is /etc/mtab.
>>>
>>> After a longer discussion, we (SUSE) chose to patch mountlist.c in findutils
>>> to use proc/mounts instead of /etc/mtab which fixed ou problem.
>>>
>>> Would gnulib accept the attached patch to mountlist.c?
>>
>> I don't know if this patch was accepted, but it shouldn't be. Â The
>> problem is that /proc/mounts has incomplete data for /. Â This will
>> break gnulib's mountlist, at least with the current form of the patch,
>> because mountlist will have an incorrect idea of the type of the root
>> filesystem. Â Here's an example showing the problem:
>>
>> ~$ cat tryit.sh
>> #! /bin/sh
>> f() {
>> Â Â echo "$1"
>> Â Â ( ls -l /etc/mtab; find / -maxdepth 0 -printf '%p %F\n' ) |
>> Â Â sed -e 's_^_ Â Â_'
>> }
>>
>> set -e
>> cd /etc
>> f "regular /etc/mtab"
>>
>> mv mtab mtab.old; ln -s ../proc/mounts mtab
>> f "with /proc/mounts"
>> rm mtab; mv mtab.old mtab
>> ~$ sudo sh tryit.sh
>> regular /etc/mtab
>> Â Â -rw-r--r-- 1 root root 1869 May 30 23:53 /etc/mtab
>> Â Â / ext3
>> with /proc/mounts
>> Â Â lrwxrwxrwx 1 root root 14 May 31 01:12 /etc/mtab -> ../proc/mounts
>> Â Â / rootfs
>
> Well I didn't merge it, but for more generic reasons.
> It seemed like a bit of a layering violation to me,
> and I was unsure that other users of gnulib may need
> access to /etc/mtab specific stuff (on older systems).
>
> Here is related output on my Fedora 15 system
> which does link /etc/mtab -> /proc/mounts
>
> $ df /
> Filesystem      1K-blocks   ÂUsed Available Use% Mounted on
> /dev/sdb2 Â Â Â Â Â Â 13102208 Â 3210896 Â 9758244 Â25% /
> $ df -t rootfs
> Filesystem      1K-blocks   ÂUsed Available Use% Mounted on
> rootfs        Â13102208  3210896  9758244 Â25% /
> $ find / -maxdepth 0 -printf "%p %F\n"
> / rootfs
Thanks for the additional info. I think that would be a bug in
Fedora 15, then.
James.
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