systemd-update-done needs to be able to create /etc/.updated and /var/.updated
Jun 6 13:11:58 localhost systemd-update-done: Failed to create timestamp file /etc/.updated: Permission denied
Jun 6 13:11:58 localhost systemd-update-done: Failed to create timestamp file /var/.updated: Permission denied
Jun 6 13:11:58 localhost systemd: systemd-update-done.service: main process exited, code=exited, status=1/FAILURE
Jun 6 13:11:58 localhost systemd: Failed to start Update is Completed.
Jun 6 13:11:58 localhost systemd: Unit systemd-update-done.service entered failed state.
Jun 6 13:11:58 localhost systemd: systemd-update-done.service failed.
Signed-off-by: Dave Sugar <dsugar@tresys.com>
The cgroup directory under /sys/fs/cgroup contains a number of
pseudo-filesystems for each cgroup as well as two symbolic links for the
cpu and cpuacct groups, which were legacy symbolic links to the
cpu,cpuacct group.
These rules allow systemd to relabel these symbolic links from tmpfs_t
to their proper context, or otherwise denials will be printed for nearly
all systemd operation involving cgroups.
This change only grants systemd the possibility to relabel the
files. The actual relabelling needs to be done by systemd. The
accompanying change (commit 8739f23) will be released with systemd v236.
Policy needed for systemd-networkd to function. This is based on a patch from krzysztof.a.nowicki at gmail.com that was submitted back in May (I talked to him via email a while ago about me picking up the patch). He was too busy to update and I needed to get it working.
I am pretty sure I updated everything mentioned in previous feedback, please comment if something is still off and I will revise.
Signed-off-by: Dave Sugar <dsugar@tresys.com>
I am seeing the following denial (in dmesg) during system startup:
[ 4.623332] type=1400 audit(1507767947.042:3): avc: denied { relabelto } for pid=1 comm="systemd" name="private" dev="tmpfs" ino=5865 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:init_var_run_t:s0 tclass=sock_file
It appears that systemd is attempting to relablel the socket file /run/systemd/private to init_var_run_t but doesn't have permission.
Updated to create new interface for relabeling of sock_files rather than adding to existing interface
Signed-off-by: Dave Sugar <dsugar@tresys.com>
systemd relabels everything in /dev and /run after loading the policy.
In these directories there is a socket file for udev, /run/udev/control,
which is not allowed to be relabelled from tmpfs_t:
avc: denied { relabelfrom } for pid=1 comm="systemd"
name="control" dev="tmpfs" ino=7027
scontext=system_u:system_r:init_t tcontext=system_u:object_r:tmpfs_t
tclass=sock_file permissive=1
avc: denied { relabelto } for pid=1 comm="systemd" name="control"
dev="tmpfs" ino=7027 scontext=system_u:system_r:init_t
tcontext=system_u:object_r:udev_var_run_t tclass=sock_file
permissive=1
/run/tmpfiles.d directory (used by systemd-tmpfiles service) is also
relabelled.
This is currently denied:
avc: denied { create } for pid=1 comm="systemd" name="pts"
scontext=system_u:system_r:init_t
tcontext=system_u:object_r:devpts_t tclass=dir permissive=1
Remove complement (~) and wildcard (*) in allow rules so that there are no
unintentional additions when new permissions are declared.
This patch does not add or remove permissions from any rules.
Setting this service option to 'full' or 'strict' will also remount the
/etc directory. Allow this in the policy.
This fixes the systemd-networkd service, but will also positively affect
any other service using the above hardening option.
Improve the initrc domain within the init module with some permissions
needed for a smoother boot.
Let the iptables init scripts read the iptables configuration.
Signed-off-by: Guido Trentalancia <guido@trentalancia.net>
This patch is slightly more involved than just running sed. It also adds
typealias rules and doesn't change the FC entries.
The /dev/apm_bios device doesn't exist on modern systems. I have left that
policy in for the moment on the principle of making one change per patch. But
I might send another patch to remove that as it won't exist with modern
kernels.
Chris PeBenito
Jason Zaman
Dave Sugar
Christian Göttsche
Krzysztof Nowicki
Nicolas Iooss
Guido Trentalancia