From: Stephen Smalley <sds@tycho.nsa.gov>
Date: Fri, 25 Jan 2008 18:03:42 +0000 (-0500)
Subject: selinux: fix labeling of /proc/net inodes
X-Git-Tag: v2.6.25-rc1~1229^2
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b1aa5301b9f88a4891061650c591fb8fe1c1d1da;p=linux-2.6

selinux: fix labeling of /proc/net inodes

The proc net rewrite had a side effect on selinux, leading it to mislabel
the /proc/net inodes, thereby leading to incorrect denials.  Fix
security_genfs_sid to ignore extra leading / characters in the path supplied
by selinux_proc_get_sid since we now get "//net/..." rather than "/net/...".

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
---

diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index f83b19daed..4bf715d4cf 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -1744,6 +1744,9 @@ int security_genfs_sid(const char *fstype,
 	struct ocontext *c;
 	int rc = 0, cmp = 0;
 
+	while (path[0] == '/' && path[1] == '/')
+		path++;
+
 	POLICY_RDLOCK;
 
 	for (genfs = policydb.genfs; genfs; genfs = genfs->next) {