commit:     74cdafab2e96eedec3dc91926d38b8597bc70893
Author:     Sugar, David <dsugar <AT> tresys <DOT> com>
AuthorDate: Thu Jan 23 12:40:49 2020 +0000
Commit:     Jason Zaman <perfinion <AT> gentoo <DOT> org>
CommitDate: Sat Feb 15 07:32:05 2020 +0000
URL:        
https://gitweb.gentoo.org/proj/hardened-refpolicy.git/commit/?id=74cdafab

Allow systemd to getattr all files

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 <AT> tresys.com>
Signed-off-by: Jason Zaman <perfinion <AT> gentoo.org>

 policy/modules/system/init.te | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te
index 8417a003..1d060385 100644
--- a/policy/modules/system/init.te
+++ b/policy/modules/system/init.te
@@ -335,6 +335,11 @@ ifdef(`init_systemd',`
        domain_subj_id_change_exemption(init_t)
        domain_role_change_exemption(init_t)
 
+       files_getattr_all_dirs(init_t)
+       files_getattr_all_files(init_t)
+       files_getattr_all_pipes(init_t)
+       files_getattr_all_sockets(init_t)
+       files_read_all_symlinks(init_t)
        files_read_all_pids(init_t)
        files_list_usr(init_t)
        files_list_var(init_t)

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