commit 1ba6b2f465b0bd71d0c67bf7b0b0a7e7f5989b98
author Rom Lemarchand <romlem@android.com> Sat Mar 07 09:38:05 2015 -0800
committer Rom Lemarchand <romlem@google.com> Mon Mar 09 19:49:58 2015 -0700
tree 11914aa634e8abd67f3bb5c05d2178c532c06ed7
parent 6f9f6c4d9e9f28f4242ea4b2d9509512f01dcd57

proc: make oom adjustment files user read-only

Make oom_adj and oom_score_adj user read-only.

Bug: 19636629
Change-Id: I055bb172d5b4d3d856e25918f3c5de8edf31e4a3
Signed-off-by: Rom Lemarchand <romlem@google.com>

fs/proc/base.c

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 772efa4..9416def 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2550,8 +2550,9 @@
 	ONE("cgroup",  S_IRUGO, proc_cgroup_show),
 #endif
 	ONE("oom_score",  S_IRUGO, proc_oom_score),
-	REG("oom_adj",    S_IRUGO|S_IWUSR, proc_oom_adj_operations),
-	REG("oom_score_adj", S_IRUGO|S_IWUSR, proc_oom_score_adj_operations),
+	INF("oom_score",  S_IRUGO, proc_oom_score),
+	REG("oom_adj",    S_IRUSR, proc_oom_adj_operations),
+	REG("oom_score_adj", S_IRUSR, proc_oom_score_adj_operations),
 #ifdef CONFIG_AUDITSYSCALL
 	REG("loginuid",   S_IWUSR|S_IRUGO, proc_loginuid_operations),
 	REG("sessionid",  S_IRUGO, proc_sessionid_operations),
@@ -2894,8 +2895,8 @@
 	ONE("cgroup",  S_IRUGO, proc_cgroup_show),
 #endif
 	ONE("oom_score", S_IRUGO, proc_oom_score),
-	REG("oom_adj",   S_IRUGO|S_IWUSR, proc_oom_adj_operations),
-	REG("oom_score_adj", S_IRUGO|S_IWUSR, proc_oom_score_adj_operations),
+	REG("oom_adj",   S_IRUSR, proc_oom_adj_operations),
+	REG("oom_score_adj", S_IRUSR, proc_oom_score_adj_operations),
 #ifdef CONFIG_AUDITSYSCALL
 	REG("loginuid",  S_IWUSR|S_IRUGO, proc_loginuid_operations),
 	REG("sessionid",  S_IRUGO, proc_sessionid_operations),