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From 4eaa766ef11cb053f010bcde5121e76031aae799 Mon Sep 17 00:00:00 2001
From: Yi Zhao <yi.zhao@windriver.com>
Date: Thu, 18 Jun 2020 09:59:58 +0800
Subject: [PATCH] policy/modules/system/systemd: systemd-*: make systemd_*_t
MLS trusted for writing/reading from files up to its clearance
Fixes:
audit: type=1400 audit(1592892455.376:3): avc: denied { write } for
pid=120 comm="systemd-gpt-aut" name="kmsg" dev="devtmpfs" ino=10032
scontext=system_u:system_r:systemd_generator_t:s0-s15:c0.c1023
tcontext=system_u:object_r:kmsg_device_t:s15:c0.c1023 tclass=chr_file
permissive=0
audit: type=1400 audit(1592892455.381:4): avc: denied { write } for
pid=119 comm="systemd-getty-g" name="kmsg" dev="devtmpfs" ino=10032
scontext=system_u:system_r:systemd_generator_t:s0-s15:c0.c1023
tcontext=system_u:object_r:kmsg_device_t:s15:c0.c1023 tclass=chr_file
permissive=0
avc: denied { read } for pid=125 comm="systemd-gpt-aut" name="sdb"
dev="devtmpfs" ino=42
scontext=system_u:system_r:systemd_generator_t:s0-s15:c0.c1023
tcontext=system_u:object_r:fixed_disk_device_t:s15:c0.c1023
tclass=blk_file permissive=0
avc: denied { write } for pid=233 comm="systemd-rfkill" name="kmsg"
dev="devtmpfs" ino=2060
scontext=system_u:system_r:systemd_rfkill_t:s0-s15:c0.c1023
tcontext=system_u:object_r:kmsg_device_t:s15:c0.c1023 tclass=chr_file
permissive=0
avc: denied { write } for pid=354 comm="systemd-backlig" name="kmsg"
dev="devtmpfs" ino=3081
scontext=system_u:system_r:systemd_backlight_t:s0-s15:c0.c1023
tcontext=system_u:object_r:kmsg_device_t:s15:c0.c1023 tclass=chr_file
permissive=0
Upstream-Status: Inappropriate [embedded specific]
Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
---
policy/modules/system/systemd.te | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/policy/modules/system/systemd.te b/policy/modules/system/systemd.te
index e483d8aea..a0e6bb405 100644
--- a/policy/modules/system/systemd.te
+++ b/policy/modules/system/systemd.te
@@ -391,6 +391,9 @@ files_search_var_lib(systemd_backlight_t)
fs_getattr_all_fs(systemd_backlight_t)
fs_search_cgroup_dirs(systemd_backlight_t)
+mls_file_read_to_clearance(systemd_backlight_t)
+mls_file_write_to_clearance(systemd_backlight_t)
+
#######################################
#
# Binfmt local policy
@@ -560,6 +563,9 @@ term_use_unallocated_ttys(systemd_generator_t)
udev_read_runtime_files(systemd_generator_t)
+mls_file_read_to_clearance(systemd_generator_t)
+mls_file_write_to_clearance(systemd_generator_t)
+
ifdef(`distro_gentoo',`
corecmd_shell_entry_type(systemd_generator_t)
')
@@ -1009,6 +1015,9 @@ userdom_setattr_user_ttys(systemd_logind_t)
userdom_use_user_ttys(systemd_logind_t)
domain_read_all_domains_state(systemd_logind_t)
+mls_file_read_all_levels(systemd_logind_t)
+mls_file_write_all_levels(systemd_logind_t)
+
# Needed to work around patch not yet merged into the systemd-logind supported on RHEL 7.x
# The change in systemd by Nicolas Iooss on 02-Feb-2016 with hash 4b51966cf6c06250036e428608da92f8640beb96
# should fix the problem where user directories in /run/user/$UID/ are not getting the proper context
@@ -1591,6 +1600,9 @@ udev_read_runtime_files(systemd_rfkill_t)
systemd_log_parse_environment(systemd_rfkill_t)
+mls_file_read_to_clearance(systemd_rfkill_t)
+mls_file_write_to_clearance(systemd_rfkill_t)
+
#########################################
#
# Resolved local policy
--
2.25.1
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