linux-kernel - [RFC PATCH] proc: making "limits" world readable

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Date:	Tue, 21 Sep 2010 11:10:55 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	nhorman@...driver.com, eugene@...hat.com
Cc:	linux-kernel@...r.kernel.org, oleg@...sign.ru
Subject: [RFC PATCH] proc: making "limits" world readable

hi,

I'd like to have the /proc/<pid>/limits file world readable,
but I'm not sure this could cause some security issue.. thoughts?

The "limit" file was as a debug feature by following commit:
- proc: export a processes resource limits via /proc/pid
  commit d85f50d5e1aa99ab082035f94265847521819e58
  Author: Neil Horman <nhorman@...driver.com>


thanks for any ideas,
jirka
---
 fs/proc/base.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/proc/base.c b/fs/proc/base.c
index a1c43e7..8e4adda 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2675,7 +2675,7 @@ static const struct pid_entry tgid_base_stuff[] = {
 	INF("auxv",       S_IRUSR, proc_pid_auxv),
 	ONE("status",     S_IRUGO, proc_pid_status),
 	ONE("personality", S_IRUSR, proc_pid_personality),
-	INF("limits",	  S_IRUSR, proc_pid_limits),
+	INF("limits",	  S_IRUGO, proc_pid_limits),
 #ifdef CONFIG_SCHED_DEBUG
 	REG("sched",      S_IRUGO|S_IWUSR, proc_pid_sched_operations),
 #endif
@@ -3011,7 +3011,7 @@ static const struct pid_entry tid_base_stuff[] = {
 	INF("auxv",      S_IRUSR, proc_pid_auxv),
 	ONE("status",    S_IRUGO, proc_pid_status),
 	ONE("personality", S_IRUSR, proc_pid_personality),
-	INF("limits",	 S_IRUSR, proc_pid_limits),
+	INF("limits",	 S_IRUGO, proc_pid_limits),
 #ifdef CONFIG_SCHED_DEBUG
 	REG("sched",     S_IRUGO|S_IWUSR, proc_pid_sched_operations),
 #endif
-- 
1.7.1

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