Allow system_server to read/write /proc/uid_cputime/ module

Bug:20182139
Change-Id: I1829a83c7d8e2698715e424a688a2753d65de868

file.te

@@ -13,6 +13,8 @@ type proc_bluetooth_writable, fs_type;
 type proc_cpuinfo, fs_type;
 type proc_net, fs_type;
 type proc_sysrq, fs_type;
+type proc_uid_cputime_showstat, fs_type;
+type proc_uid_cputime_removeuid, fs_type;
 type selinuxfs, fs_type, mlstrustedobject;
 type cgroup, fs_type, mlstrustedobject;
 type sysfs, fs_type, sysfs_type, mlstrustedobject;

genfs_contexts

@@ -20,6 +20,9 @@ genfscon proc /sys/kernel/randomize_va_space u:object_r:proc_security:s0
 genfscon proc /sys/kernel/usermodehelper u:object_r:usermodehelper:s0
 genfscon proc /sys/net u:object_r:proc_net:s0
 genfscon proc /sys/vm/mmap_min_addr u:object_r:proc_security:s0
+genfscon proc /uid_cputime/show_uid_stat u:object_r:proc_uid_cputime_showstat:s0
+genfscon proc /uid_cputime/remove_uid_range u:object_r:proc_uid_cputime_removeuid:s0
+
 # selinuxfs booleans can be individually labeled.
 genfscon selinuxfs / u:object_r:selinuxfs:s0
 genfscon cgroup / u:object_r:cgroup:s0

system_server.te

@@ -89,6 +89,12 @@ r_dir_file(system_server, domain)
 allow system_server qtaguid_proc:file rw_file_perms;
 allow system_server qtaguid_device:chr_file rw_file_perms;
 
+# Read /proc/uid_cputime/show_uid_stat.
+allow system_server proc_uid_cputime_showstat:file r_file_perms;
+
+# Write /proc/uid_cputime/remove_uid_range.
+allow system_server proc_uid_cputime_removeuid:file { w_file_perms getattr };
+
 # Write to /proc/sysrq-trigger.
 allow system_server proc_sysrq:file rw_file_perms;