linux-kernel - [PATCH 31/46] selinux: Move an assignment for the variable "rc" in role

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Date:   Sun, 15 Jan 2017 16:31:10 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-security-module@...r.kernel.org, selinux@...ho.nsa.gov,
        Eric Paris <eparis@...isplace.org>,
        James Morris <james.l.morris@...cle.com>,
        Paul Moore <paul@...l-moore.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        William Roberts <william.c.roberts@...el.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 31/46] selinux: Move an assignment for the variable "rc" in
 role_read()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 14 Jan 2017 22:25:20 +0100

A local variable was set to an error code in one case before a concrete
error situation was detected. Thus move the corresponding assignment into
an if branch to indicate a software failure there.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 security/selinux/ss/policydb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index 34b670227c4d..49fc5d8990e9 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -1439,10 +1439,10 @@ static int role_read(struct policydb *p, struct hashtab *h, void *fp)
 		goto bad;
 
 	if (strcmp(key, OBJECT_R) == 0) {
-		rc = -EINVAL;
 		if (role->value != OBJECT_R_VAL) {
 			printk(KERN_ERR "SELinux: Role %s has wrong value %d\n",
 			       OBJECT_R, role->value);
+			rc = -EINVAL;
 			goto bad;
 		}
 		rc = 0;
-- 
2.11.0