On Sun, Jul 06, 2014 at 09:15:28PM +0400, Ivan Shapovalov wrote: > On Sunday 06 July 2014 at 13:13:55, Mike Gilbert wrote: > > On Sun, Jul 6, 2014 at 1:08 PM, Ivan Shapovalov <[email protected]> > > wrote: > > > On Sunday 06 July 2014 at 13:01:22, Leonid Isaev wrote: > > >> Hi, > > >> > > >> I have a read-only / filesystem and /etc/mtab points to > > >> /proc/self/mounts as it should. > > >> So, in systemd-215 tmpfile.d fails to create a symbolic link > > >> /etc/mtab > > >> because /usr/lib/tmpfiles.d/etc.conf contains is a line "L+ /etc/mtab - > > >> - - - > > >> ../proc/self/mounts". > > >> Is this intentional? Besides failing on ro /, it is also confusing > > >> because /etc/mtab can be supplied by a package (in archlinux, the > > >> 'filesystem' > > >> package), so why tmpfiles instead of including this symlink with systemd? > > >> The same question applies to the entire etc.conf: why does tmpfiles > > >> touch /etc at all, especially if /etc is already properly set up? > > >> > > >> Thanks, > > >> > > > > > > L+ (as well as any other "+" directives) only force-overwrite files if > > > this is > > > needed, e. g. if a symlink points to the wrong desination. > > > > > > > Right. > > > > I think the path matching is a little naive; Using a simple string > > comparison, "/proc/self/mounts" != "../proc/self/mounts" even though > > both paths refer to the same object. > > No, they aren't referring to the same object. This makes a difference > when you mount a "foreign" system image for maintainance.
Cool :(
So... the solution would be for distro packages to ship mtab as a symlink to
"../proc" instead of "/proc"?
Thanks,
--
Leonid Isaev
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