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From 1d43a34c536a0fc1887a1e6bef21b25e82e52f09 Mon Sep 17 00:00:00 2001
From: Nicolas Iooss <nicolas.iooss@m4x.org>
Date: Tue, 5 Jan 2016 17:59:04 +0100
Subject: [PATCH] Allow using /sys/fs/cgroup symlinks
On ArchLinux, /sys/fs/cgroup contains 2 symbolic links:
* cpu -> cpu,cpuacct
* cpuacct -> cpu,cpuacct
As programs use these links like normal directory, allow them to follow
them when allowing search access to cgroup_t directories.
---
policy/modules/kernel/filesystem.if | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/policy/modules/kernel/filesystem.if b/policy/modules/kernel/filesystem.if
index 99ad71f926b4..1d1676561b4a 100644
--- a/policy/modules/kernel/filesystem.if
+++ b/policy/modules/kernel/filesystem.if
@@ -724,6 +724,7 @@ interface(`fs_list_cgroup_dirs', `
list_dirs_pattern($1, cgroup_t, cgroup_t)
dev_search_sysfs($1)
+ allow $1 cgroup_t:lnk_file read_lnk_file_perms;
')
########################################
@@ -763,6 +764,7 @@ interface(`fs_manage_cgroup_dirs',`
manage_dirs_pattern($1, cgroup_t, cgroup_t)
dev_search_sysfs($1)
+ allow $1 cgroup_t:lnk_file read_lnk_file_perms;
')
########################################
@@ -802,6 +804,7 @@ interface(`fs_read_cgroup_files',`
read_files_pattern($1, cgroup_t, cgroup_t)
read_lnk_files_pattern($1, cgroup_t, cgroup_t)
dev_search_sysfs($1)
+ allow $1 cgroup_t:lnk_file read_lnk_file_perms;
')
########################################
@@ -821,6 +824,7 @@ interface(`fs_write_cgroup_files', `
write_files_pattern($1, cgroup_t, cgroup_t)
dev_search_sysfs($1)
+ allow $1 cgroup_t:lnk_file read_lnk_file_perms;
')
########################################
@@ -841,6 +845,7 @@ interface(`fs_rw_cgroup_files',`
rw_files_pattern($1, cgroup_t, cgroup_t)
dev_search_sysfs($1)
+ allow $1 cgroup_t:lnk_file read_lnk_file_perms;
')
########################################
@@ -881,6 +886,7 @@ interface(`fs_manage_cgroup_files',`
manage_files_pattern($1, cgroup_t, cgroup_t)
dev_search_sysfs($1)
+ allow $1 cgroup_t:lnk_file manage_lnk_file_perms;
')
########################################
--
2.6.4
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