Hide Forgot
libreport version: 2.0.8 executable: /usr/bin/python hashmarkername: setroubleshoot kernel: 3.3.0-1.fc17.x86_64 reason: SELinux is preventing /usr/lib/systemd/systemd-multi-seat-x from 'write' accesses on the directory systemd. time: Sun 01 Apr 2012 01:39:27 PM EDT description: :SELinux is preventing /usr/lib/systemd/systemd-multi-seat-x from 'write' accesses on the directory systemd. : :***** Plugin catchall (100. confidence) suggests *************************** : :If you believe that systemd-multi-seat-x should be allowed write access on the systemd directory by default. :Then you should report this as a bug. :You can generate a local policy module to allow this access. :Do :allow this access for now by executing: :# grep systemd-multi-s /var/log/audit/audit.log | audit2allow -M mypol :# semodule -i mypol.pp : :Additional Information: :Source Context system_u:system_r:xdm_t:s0-s0:c0.c1023 :Target Context system_u:object_r:init_var_run_t:s0 :Target Objects systemd [ dir ] :Source systemd-multi-s :Source Path /usr/lib/systemd/systemd-multi-seat-x :Port <Unknown> :Host (removed) :Source RPM Packages systemd-44-1.fc17.x86_64 :Target RPM Packages :Policy RPM selinux-policy-3.10.0-104.fc17.noarch :Selinux Enabled True :Policy Type targeted :Enforcing Mode Enforcing :Host Name (removed) :Platform Linux localhost.localdomain 3.3.0-1.fc17.x86_64 #1 : SMP Mon Mar 19 03:03:39 UTC 2012 x86_64 x86_64 :Alert Count 6 :First Seen Sun 01 Apr 2012 01:29:54 PM EDT :Last Seen Sun 01 Apr 2012 01:29:54 PM EDT :Local ID 2d54cc3a-343a-44b7-95df-bd3417bc48c3 : :Raw Audit Messages :type=AVC msg=audit(1333301394.950:323): avc: denied { write } for pid=1638 comm="systemd-multi-s" name="systemd" dev="tmpfs" ino=7589 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:init_var_run_t:s0 tclass=dir : : :type=SYSCALL msg=audit(1333301394.950:323): arch=x86_64 syscall=mkdir success=no exit=EACCES a0=4034a6 a1=1ed a2=7fab10ea5770 a3=7ffffeca6640 items=0 ppid=1636 pid=1638 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=systemd-multi-s exe=/usr/lib/systemd/systemd-multi-seat-x subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 key=(null) : :Hash: systemd-multi-s,xdm_t,init_var_run_t,dir,write : :audit2allowunable to open /sys/fs/selinux/policy: Permission denied : : :audit2allow -Runable to open /sys/fs/selinux/policy: Permission denied : :
Any idea what directory/file it is trying to write? Is this writing content into /run/systemd
/run/systemd/multi-session-x/ /run/systemd/multi-session-x /run/plymouth/pid Systemd guys what processess have to be able to write here? Read Hear?
Currently we have /var/run/systemd/seats(/.*)? gen_context(system_u:object_r:systemd_logind_var_run_t,s0) /var/run/systemd/sessions(/.*)? gen_context(system_u:object_r:systemd_logind_sessions_t,s0) /var/run/systemd/users(/.*)? gen_context(system_u:object_r:systemd_logind_var_run_t,s0) Should we label multi-session-x the same? Should we treat systemd-multi-seat-x like we treat /lib/systemd/systemd-logind
> Any idea what directory/file it is trying to write? Is this writing content into /run/systemd yes http://cgit.freedesktop.org/systemd/systemd/tree/src/login/multi-seat-x.c#n115
> Should we label multi-session-x the same? Should we treat > systemd-multi-seat-x > like we treat /lib/systemd/systemd-logind multi-seat-x is its own executable, and is an ugly wrapper around X until X gains this functionality natively I dont think it needs access to the rules you listed above. The X server does need read access to the xorg.conf this wrapper writes out
Ok I am going to label this as xdm_var_run_t. /var/run/systemd/multi-session-x(/.*)? gen_context(system_u:object_r:xdm_var_ru And allow xdm_t to create it. Does anything in systemd need to manage this directory?
multi-seat-x writes a throw-away configuration file for X to add graphics multi-seat support to X until X learns this natively.
> And allow xdm_t to create it. Does anything in systemd need to manage this directory? no
Fixed in selinux-policy-3.10.0-114.fc17
selinux-policy-3.10.0-116.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/selinux-policy-3.10.0-116.fc17
selinux-policy-3.10.0-116.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.