e1ccf0ce02
Systemd has ConditionPath.*, ConditionFile.* and ConditionDir* which
are used to check various path/file/directory to control starting a
service. But this requires getattr permissions on the types.
Example denials that fit the problem.
The first example is from lvm where accessing config file.
type=AVC msg=audit(1575427946.229:1624): avc: denied { getattr } for
pid=1 comm="systemd" path="/etc/lvm/lvm.conf" dev="dm-0" ino=51799
scontext=system_u:system_r:init_t:s0
tcontext=system_u:object_r:lvm_etc_t:s0 tclass=file permissive=0
This second example is from chronyd, but it is happening becuase I added
the conditional in a drop-in file.
type=AVC msg=audit(1575427959.882:1901): avc: denied { getattr } for
pid=1 comm="systemd" path="/etc/chrony.conf" dev="dm-0" ino=53824
scontext=system_u:system_r:init_t:s0
tcontext=system_u:object_r:chronyd_conf_t:s0 tclass=file permissive=1
v3 - rework to not use interface and allow getattr for all files
Signed-off-by: Dave Sugar <dsugar@tresys.com>
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