netdev - [PATCH 1/3][RFC] SELinux: correctly detect proc filesystems of the form "proc/foo"

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Message-ID: <alpine.LRH.1.10.0812191204390.4137@tundra.namei.org>
Date:	Fri, 19 Dec 2008 12:05:39 +1100 (EST)
From:	James Morris <jmorris@...ei.org>
To:	linux-security-module@...r.kernel.org
cc:	Alexey Dobriyan <adobriyan@...il.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	David Miller <davem@...emloft.net>, auke-jan.h.kok@...el.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	e1000-devel@...ts.sourceforge.net, netdev@...r.kernel.org,
	Eric Paris <eparis@...isplace.org>,
	Stephen Smalley <sds@...ho.nsa.gov>,
	Al Viro <viro@....linux.org.uk>,
	Chris Wright <chrisw@...s-sol.org>
Subject: [PATCH 1/3][RFC] SELinux: correctly detect proc filesystems of the
 form "proc/foo"

From: Stephen Smalley <sds@...ho.nsa.gov>

Map all of these proc/ filesystem types to "proc" for the policy lookup at
filesystem mount time.

Signed-off-by: James Morris <jmorris@...ei.org>
---
 security/selinux/hooks.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index d337748..470763a 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -672,7 +672,7 @@ static int selinux_set_mnt_opts(struct super_block *sb,
 		sbsec->proc = 1;
 
 	/* Determine the labeling behavior to use for this filesystem type. */
-	rc = security_fs_use(sb->s_type->name, &sbsec->behavior, &sbsec->sid);
+	rc = security_fs_use(sbsec->proc ? "proc" : sb->s_type->name, &sbsec->behavior, &sbsec->sid);
 	if (rc) {
 		printk(KERN_WARNING "%s: security_fs_use(%s) returned %d\n",
 		       __func__, sb->s_type->name, rc);
-- 
1.6.0.4

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