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As a continuation of bug 1024787, I have found more AVCs that prevent the journald openlmi provider working properly. Opening a new bugreport to prevent breakage in the late 7.0 cycle.
selinux-policy-3.12.1-151.el7.noarch
Default context of /usr/libexec/pegasus/cmpiLMI_Journald-cimprovagt is "system_u:object_r:pegasus_openlmi_admin_exec_t:s0". Also tried "pegasus_openlmi_system_t" with no difference.
Getting these AVCs in enforcing mode:
type=AVC msg=audit(1396874196.379:403): avc: denied { read } for pid=2371 comm="cimprovagt" name="journal" dev="tmpfs" ino=8225 scontext=system_u:system_r:pegasus_openlmi_admin_t:s0 tcontext=system_u:object_r:syslogd_var_run_t:s0 tclass=dir
Permissive mode reveals several more:
type=AVC msg=audit(1396874661.620:413): avc: denied { read } for pid=2449 comm="cimprovagt" name="journal" dev="tmpfs" ino=8225 scontext=system_u:system_r:pegasus_openlmi_admin_t:s0 tcontext=system_u:object_r:syslogd_var_run_t:s0 tclass=dir
ype=AVC msg=audit(1396874661.620:414): avc: denied { read } for pid=2449 comm="cimprovagt" name="system.journal" dev="tmpfs" ino=8227 scontext=system_u:system_r:pegasus_openlmi_admin_t:s0 tcontext=system_u:object_r:syslogd_var_run_t:s0 tclass=file
type=AVC msg=audit(1396874661.620:414): avc: denied { open } for pid=2449 comm="cimprovagt" path="/run/log/journal/24dd5c5103df43af9792d34744c14b71/system.journal" dev="tmpfs" ino=8227 scontext=system_u:system_r:pegasus_openlmi_admin_t:s0 tcontext=system_u:object_r:syslogd_var_run_t:s0 tclass=file
type=AVC msg=audit(1396874661.620:415): avc: denied { getattr } for pid=2449 comm="cimprovagt" path="/run/log/journal/24dd5c5103df43af9792d34744c14b71/system.journal" dev="tmpfs" ino=8227 scontext=system_u:system_r:pegasus_openlmi_admin_t:s0 tcontext=system_u:object_r:syslogd_var_run_t:s0 tclass=file
type=AVC msg=audit(1396874661.620:416): avc: denied { getattr } for pid=2449 comm="cimprovagt" name="/" dev="tmpfs" ino=1154 scontext=system_u:system_r:pegasus_openlmi_admin_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=filesystem
This is on recent 7.0 system, where journald is configured to a non-persistent storage I guess, residing in /run/log/journal. In Fedora 20, log files seem to reside in /var/log/journal for persistency. The AVCs are bit different:
type=AVC msg=audit(1396621304.832:1708): avc: denied { read } for pid=17765 comm="cimprovagt" name="journal" dev="dm-1" ino=265576 scontext=system_u:system_r:pegasus_openlmi_admin_t:s0 tcontext=system_u:object_r:var_log_t:s0 tclass=dir
type=AVC msg=audit(1396621868.351:1737): avc: denied { read } for pid=17922 comm="cimprovagt" name="user-1000.journal" dev="dm-1" ino=266988 scontext=system_u:system_r:pegasus_openlmi_admin_t:s0 tcontext=system_u:object_r:var_log_t:s0 tclass=file
type=AVC msg=audit(1396621868.351:1737): avc: denied { open } for pid=17922 comm="cimprovagt" path="/var/log/journal/f171ae8c7b22634415aecd50465d9ef2/user-1000.journal" dev="dm-1" ino=266988 scontext=system_u:system_r:pegasus_openlmi_admin_t:s0 tcontext=system_u:object_r:var_log_t:s0 tclass=file
Would be great to cover both cases for RHEL 7.1 in case somebody turns persistency on.
Steps to repro:
$ lmishell -n
> c = connect("localhost", "root", "password")
> i = c.root.cimv2.LMI_JournalMessageLog.first_instance()
> r = i.PositionToFirstRecord()
> print r
LMIReturnValue(rval=2, rparams=NocaseDict({}), errorstr='')
^^ the rval should be zero and rparams dict should not be empty, switching to Permissive mode returns valid data.
#============= pegasus_openlmi_admin_t ==============
#!!!! This avc is allowed in the current policy
allow pegasus_openlmi_admin_t syslogd_var_run_t:dir read;
#!!!! This avc is allowed in the current policy
allow pegasus_openlmi_admin_t syslogd_var_run_t:file { read getattr open };
#!!!! This avc is allowed in the current policy
allow pegasus_openlmi_admin_t tmpfs_t:filesystem getattr;
#!!!! This avc is allowed in the current policy
allow pegasus_openlmi_admin_t var_log_t:dir read;
#!!!! This avc is allowed in the current policy
allow pegasus_openlmi_admin_t var_log_t:file { read open };
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2015-0458.html