Coverity is unhappy because we use "line" in the assert that checks
the return value. It doesn't matter much, but let's clean this up.
Also, let's not assume that /proc/cmdline contains anything.
CID #1400219.
When running in Fedora "mock", / is a tmpfs and /home is not mounted. The test
assumes that /home will be a tmpfs only and only if we can unshare. Obviously,
this does not hold in this case, because unsharing is not possible, but /home
is still a tmpfs. Let's just skip the test, since it's fully legitimate to
mount either or both of / and /home as tmpfs.
test_exec_ambientcapabilities: exec-ambientcapabilities-nobody.service: exit status 0, expected 1
Sometimes we get just the last line, for example from the failure summary,
so make it as useful as possible.
This adds some extra paranoia: when we recursively chown a directory for
use with DynamicUser=1 services we'll now drop suid/sgid from all files
we chown().
Of course, such files should not exist in the first place, and noone
should get access to those dirs who isn't root anyway, but let's better
be safe than sorry, and drop everything we come across.
Add even more suid/sgid protection to DynamicUser= envionments: the
state directories we bind mount from the host will now have the nosuid
flag set, to disable the effect of nosuid on them.
The host mounts it like that, nspawn hence should do too.
Moreover, mount the file system after doing CLONEW_NEWIPC so that it
actually reflects the right mqueues. Finally, mount it wthout
considering it fatal, since POSIX mqueue support is little used and it
should be fine not to support it in the kernel.
The function is otherwise generic enough to toggle other bind mount
flags beyond MS_RDONLY (for example: MS_NOSUID or MS_NODEV), hence let's
beef it up slightly to support that too.
Humans are susceptible to making orthographic errors sometimes. A
misspelled "%systemd_post caek.service" would go unnoticed due to all
output from systemctl being discarded if and when %post runs.
To alleviate this, cease hiding outputs. Then, to account for the
potential absence of systemd from the system, add file checks so as
to not generate a "command not found" error.
This adds support for user to set & get reboot parameter for reboot.
As callee would be next issuing Reboot call same policy checks are being used.
If unit file issuing the reboot action defines RebootArgument (or similar) that
setting takes precedence.
Previously both run() and run_container() would free 'fds'. Let's fix
that, and let run() free it but make run_container() already remove all
fds from it, because that's what we actually want to do.
Fixes: #12073
