linux-kernel - [PATCH 6/9] syslog_ns: use init syslog

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Date:	Mon, 29 Jul 2013 10:31:17 +0800
From:	Rui Xiang <rui.xiang@...wei.com>
To:	<containers@...ts.linux-foundation.org>,
	<linux-kernel@...r.kernel.org>
CC:	<serge.hallyn@...ntu.com>, <ebiederm@...ssion.com>,
	<akpm@...ux-foundation.org>, <gaofeng@...fujitsu.com>,
	<libo.chen@...wei.com>, Rui Xiang <rui.xiang@...wei.com>
Subject: [PATCH 6/9] syslog_ns: use init syslog_ns for console action

While flags SYSLOG_ACTION_CONSOLE_ON/OFF/LEVEL of
console actin are used in syslog syscall, the related
hanlding should be targeted at host by init_syslog_ns.

Signed-off-by: Rui Xiang <rui.xiang@...wei.com>
---
 kernel/printk.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/kernel/printk.c b/kernel/printk.c
index c5c65a8..fd2d600 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -379,6 +379,11 @@ static int check_syslog_permissions(int type, bool from_file,
 	if (from_file && type != SYSLOG_ACTION_OPEN)
 		return 0;
 
+	if (type == SYSLOG_ACTION_CONSOLE_OFF
+		|| type == SYSLOG_ACTION_CONSOLE_ON
+		|| type == SYSLOG_ACTION_CONSOLE_LEVEL)
+		ns = &init_syslog_ns;
+
 	if (syslog_action_restricted(type, ns)) {
 		if (ns_capable(ns->owner, CAP_SYSLOG))
 			return 0;
-- 
1.8.2.2


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