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| author |   David Sugar <dsugar@tresys.com> | 2017-12-08 22:30:58 +0000 |
|---|---|---|
| committer |   Jason Zaman <jason@perfinion.com> | 2017-12-12 15:06:27 +0800 |
| commit | 60d89770b45fce6ae0eefabbbbebd1fbaa717eea (patch) | |
| tree | e0b4af4daa1807b2abed4a5cc6ab45bbb0c63790 /policy/modules/system/init.fc | |
| parent | xserver: Module version bump. (diff) | |
| download | hardened-refpolicy-60d89770b45fce6ae0eefabbbbebd1fbaa717eea.tar.gz hardened-refpolicy-60d89770b45fce6ae0eefabbbbebd1fbaa717eea.tar.bz2 hardened-refpolicy-60d89770b45fce6ae0eefabbbbebd1fbaa717eea.zip | |
label systemd-shutdown so shutdown works
I am seeing (on RHEL 7.4 w/systemd) that halting the system doesn't work. It took me a long time (and a lot of help from Steve L.) to figure out what was going on. It turns out in refpolicy the default label for /usr/lib/systemd/systemd-shutdown is bin_t. But when systemd tried to execve systemd-shutdown it fails because init_t isn't allowed file entrypoint for bin_t. When I labeled systemd-shutdown as init_exec_t shutting down the system works.
I was seeing the following log (from systemd) when I enabled systemd debug logging (which was very useful).
[ 59.745037] systemd[1]: Starting Final Step.
[ 59.746112] systemd[1]: Starting Power-Off...
[ 59.776320] systemd[1]: Shutting down.
[ 59.783559] systemd[1]: Failed to execute shutdown binary, freezing: Operation not permitted
At this point everything locks up instead of actually halting the system.
This is a patch to change the label for systemd-shutdown which solves the problem. I'm happy to go through and make a distinct type of systemd-shutdown if someone doesn't think it is a good idea to share the type with systemd. But based on what is going on, this might be reasonable.
Signed-off-by: Dave Sugar <dsugar@tresys.com>
Diffstat (limited to 'policy/modules/system/init.fc')
| -rw-r--r-- | policy/modules/system/init.fc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/policy/modules/system/init.fc b/policy/modules/system/init.fc index d029ea303..bf0acaf97 100644 --- a/policy/modules/system/init.fc +++ b/policy/modules/system/init.fc @@ -29,6 +29,7 @@ ifdef(`distro_gentoo',` /usr/bin/upstart -- gen_context(system_u:object_r:init_exec_t,s0) /usr/lib/systemd/systemd -- gen_context(system_u:object_r:init_exec_t,s0) +/usr/lib/systemd/systemd-shutdown -- gen_context(system_u:object_r:init_exec_t,s0) /usr/lib/systemd/system-preset(/.*)? gen_context(system_u:object_r:systemd_unit_t,s0) /usr/lib/systemd/user-preset(/.*)? gen_context(system_u:object_r:systemd_unit_t,s0) /usr/lib/systemd/ntp-units\.d -d gen_context(system_u:object_r:systemd_unit_t,s0) |