Merge branch 'smack-for-3.19' of git://git.gitorious.org/smack-next/k…

…ernel into next
git-mirror · Nov 26, 2014 · ac14ae2 · ac14ae2
2 parents a6aacbd + 5c1b662
commit ac14ae2
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Showing 2 changed files with 18 additions and 12 deletions.
diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c
@@ -142,8 +142,7 @@ int smk_access(struct smack_known *subject, struct smack_known *object,
 	 * Tasks cannot be assigned the internet label.
 	 * An internet subject can access any object.
 	 */
-	if (object == &smack_known_web ||
-	    subject == &smack_known_web)
+	if (object == &smack_known_web || subject == &smack_known_web)
 		goto out_audit;
 	/*
 	 * A star object can be accessed by any subject.
@@ -157,10 +156,11 @@ int smk_access(struct smack_known *subject, struct smack_known *object,
 	if (subject->smk_known == object->smk_known)
 		goto out_audit;
 	/*
-	 * A hat subject can read any object.
-	 * A floor object can be read by any subject.
+	 * A hat subject can read or lock any object.
+	 * A floor object can be read or locked by any subject.
 	 */
-	if ((request & MAY_ANYREAD) == request) {
+	if ((request & MAY_ANYREAD) == request ||
+	    (request & MAY_LOCK) == request) {
 		if (object == &smack_known_floor)
 			goto out_audit;
 		if (subject == &smack_known_hat)
@@ -452,10 +452,9 @@ char *smk_parse_smack(const char *string, int len)
 		return NULL;
 
 	smack = kzalloc(i + 1, GFP_KERNEL);
-	if (smack != NULL) {
-		strncpy(smack, string, i + 1);
-		smack[i] = '\0';
-	}
+	if (smack != NULL)
+		strncpy(smack, string, i);
+
 	return smack;
 }
 

diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
@@ -53,6 +53,7 @@
 #define SMK_SENDING	2
 
 LIST_HEAD(smk_ipv6_port_list);
+static struct kmem_cache *smack_inode_cache;
 
 #ifdef CONFIG_SECURITY_SMACK_BRINGUP
 static void smk_bu_mode(int mode, char *s)
@@ -240,7 +241,7 @@ struct inode_smack *new_inode_smack(struct smack_known *skp)
 {
 	struct inode_smack *isp;
 
-	isp = kzalloc(sizeof(struct inode_smack), GFP_NOFS);
+	isp = kmem_cache_zalloc(smack_inode_cache, GFP_NOFS);
 	if (isp == NULL)
 		return NULL;
 
@@ -767,7 +768,7 @@ static int smack_inode_alloc_security(struct inode *inode)
  */
 static void smack_inode_free_security(struct inode *inode)
 {
-	kfree(inode->i_security);
+	kmem_cache_free(smack_inode_cache, inode->i_security);
 	inode->i_security = NULL;
 }
 
@@ -4265,10 +4266,16 @@ static __init int smack_init(void)
 	if (!security_module_enable(&smack_ops))
 		return 0;
 
+	smack_inode_cache = KMEM_CACHE(inode_smack, 0);
+	if (!smack_inode_cache)
+		return -ENOMEM;
+
 	tsp = new_task_smack(&smack_known_floor, &smack_known_floor,
 				GFP_KERNEL);
-	if (tsp == NULL)
+	if (tsp == NULL) {
+		kmem_cache_destroy(smack_inode_cache);
 		return -ENOMEM;
+	}
 
 	printk(KERN_INFO "Smack:  Initializing.\n");