Merge branch 'smack-for-4.13' of git://github.com/cschaufler/smack-ne…

…xt into next
ambv · Jun 21, 2017 · cdac74d · cdac74d
2 parents e4b0852 + f28e783
commit cdac74d
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Showing 4 changed files with 31 additions and 18 deletions.
diff --git a/security/smack/smack.h b/security/smack/smack.h
@@ -320,7 +320,7 @@ int smk_netlbl_mls(int, char *, struct netlbl_lsm_secattr *, int);
 struct smack_known *smk_import_entry(const char *, int);
 void smk_insert_entry(struct smack_known *skp);
 struct smack_known *smk_find_entry(const char *);
-int smack_privileged(int cap);
+bool smack_privileged(int cap);
 void smk_destroy_label_list(struct list_head *list);
 
 /*

diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c
@@ -627,35 +627,38 @@ DEFINE_MUTEX(smack_onlycap_lock);
  * Is the task privileged and allowed to be privileged
  * by the onlycap rule.
  *
- * Returns 1 if the task is allowed to be privileged, 0 if it's not.
+ * Returns true if the task is allowed to be privileged, false if it's not.
  */
-int smack_privileged(int cap)
+bool smack_privileged(int cap)
 {
 	struct smack_known *skp = smk_of_current();
 	struct smack_known_list_elem *sklep;
+	int rc;
 
 	/*
 	 * All kernel tasks are privileged
 	 */
 	if (unlikely(current->flags & PF_KTHREAD))
-		return 1;
+		return true;
 
-	if (!capable(cap))
-		return 0;
+	rc = cap_capable(current_cred(), &init_user_ns, cap,
+				SECURITY_CAP_AUDIT);
+	if (rc)
+		return false;
 
 	rcu_read_lock();
 	if (list_empty(&smack_onlycap_list)) {
 		rcu_read_unlock();
-		return 1;
+		return true;
 	}
 
 	list_for_each_entry_rcu(sklep, &smack_onlycap_list, list) {
 		if (sklep->smk_label == skp) {
 			rcu_read_unlock();
-			return 1;
+			return true;
 		}
 	}
 	rcu_read_unlock();
 
-	return 0;
+	return false;
 }
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
@@ -1915,7 +1915,7 @@ static int smack_file_receive(struct file *file)
 	smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
 	smk_ad_setfield_u_fs_path(&ad, file->f_path);
 
-	if (S_ISSOCK(inode->i_mode)) {
+	if (inode->i_sb->s_magic == SOCKFS_MAGIC) {
 		sock = SOCKET_I(inode);
 		ssp = sock->sk->sk_security;
 		tsp = current_security();

diff --git a/security/smack/smack_netfilter.c b/security/smack/smack_netfilter.c
@@ -18,6 +18,7 @@
 #include <linux/netfilter_ipv6.h>
 #include <linux/netdevice.h>
 #include <net/inet_sock.h>
+#include <net/net_namespace.h>
 #include "smack.h"
 
 #if IS_ENABLED(CONFIG_IPV6)
@@ -74,20 +75,29 @@ static struct nf_hook_ops smack_nf_ops[] = {
 #endif	/* IPV6 */
 };
 
-static int __init smack_nf_ip_init(void)
+static int __net_init smack_nf_register(struct net *net)
+{
+	return nf_register_net_hooks(net, smack_nf_ops,
+				     ARRAY_SIZE(smack_nf_ops));
+}
+
+static void __net_exit smack_nf_unregister(struct net *net)
 {
-	int err;
+	nf_unregister_net_hooks(net, smack_nf_ops, ARRAY_SIZE(smack_nf_ops));
+}
 
+static struct pernet_operations smack_net_ops = {
+	.init = smack_nf_register,
+	.exit = smack_nf_unregister,
+};
+
+static int __init smack_nf_ip_init(void)
+{
 	if (smack_enabled == 0)
 		return 0;
 
 	printk(KERN_DEBUG "Smack: Registering netfilter hooks\n");
-
-	err = nf_register_hooks(smack_nf_ops, ARRAY_SIZE(smack_nf_ops));
-	if (err)
-		pr_info("Smack: nf_register_hooks: error %d\n", err);
-
-	return 0;
+	return register_pernet_subsys(&smack_net_ops);
 }
 
 __initcall(smack_nf_ip_init);