Re: mount.davfs: program is not setuid root

[Simon Streit <lists@netpanic.org>]

Efraim Flashner <efraim@flashner.co.il> writes:

> On Mon, Apr 19, 2021 at 08:47:08PM -0400, Leo Famulari wrote:
>> On Mon, Apr 19, 2021 at 10:30:13PM +0200, Simon Streit wrote:
>> > I just tried again, and called mount as:
>> > --8<---------------cut here---------------start------------->8---
>> > /run/setuid-programs/mount -t <URL> ~/test/
>> > --8<---------------cut here---------------end--------------->8---
>> > where URL is my remote URL share trying to mount it to local test dir,
>> > where it fails with:
>> > --8<---------------cut here---------------start------------->8---
>> > /run/current-system/profile/sbin/mount.davfs: program is not setuid root
>> > --8<---------------cut here---------------end--------------->8---
>> 
>> So, '/run/setuid-programs/mount' is somehow resolving to
>> '/run/current-system/profile/sbin/mount.davfs'?
>> 
>> The executables in /run/setuid-programs are not supposed to be links.
>> 
>
> From the ./configure script in davfs2:
>
> Some influential environment variables:
>   CC          C compiler command
>   CFLAGS      C compiler flags
>   LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
>               nonstandard directory <lib dir>
>   LIBS        libraries to pass to the linker, e.g. -l<library>
>   CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
>               you have headers in a nonstandard directory <include dir>
>   CPP         C preprocessor
>   dav_user    if invoked by root, mount.davfs runs as this user [davfs2]
>   dav_group   the group, the mount.davfs daemon belongs to [davfs2]
>   ssbindir    where mount will search for mount-helpers [/sbin]
>   dav_localstatedir
>               directory to store pid-files in [/var/run]
>   dav_syscachedir
>               cache directory [/var/cache]
>   LINGUAS     select languages for messages and documentation
>
> I've attached a diff against guix and also a davfs.scm for building just
> the modified davfs2. Can you try building it with `guix build -f
> davfs.scm` and then use the mount.davfs from there to try mounting your
> davfs mountpoint?

Thanks for your reply.  I'll come back to this next week.  Hopefully
I can test it before.  Unfortunately, my time is very limited at the
moment.


Cheers
Simon