[NetLabel]: uninline selinux_netlbl_inode_permission()

Uninline the selinux_netlbl_inode_permission() at the request of
Andrew Morton.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 25 insertions, 43 deletions

diff --git a/security/selinux/include/selinux_netlabel.h b/security/selinux/include/selinux_netlabel.h
index d885d880540e..d69ec650cdbe 100644
--- a/security/selinux/include/selinux_netlabel.h
+++ b/security/selinux/include/selinux_netlabel.h
@@ -43,40 +43,7 @@ void selinux_netlbl_sk_security_init(struct sk_security_struct *ssec,
                                      int family);
 void selinux_netlbl_sk_clone_security(struct sk_security_struct *ssec,
                                       struct sk_security_struct *newssec);
-
-int __selinux_netlbl_inode_permission(struct inode *inode, int mask);
-/**
- * selinux_netlbl_inode_permission - Verify the socket is NetLabel labeled
- * @inode: the file descriptor's inode
- * @mask: the permission mask
- *
- * Description:
- * Looks at a file's inode and if it is marked as a socket protected by
- * NetLabel then verify that the socket has been labeled, if not try to label
- * the socket now with the inode's SID.  Returns zero on success, negative
- * values on failure.
- *
- */
-static inline int selinux_netlbl_inode_permission(struct inode *inode,
-                                                  int mask)
-{
-        int rc = 0;
-        struct inode_security_struct *isec;
-        struct sk_security_struct *sksec;
-
-        if (!S_ISSOCK(inode->i_mode))
-                return 0;
-
-        isec = inode->i_security;
-        sksec = SOCKET_I(inode)->sk->sk_security;
-        down(&isec->sem);
-        if (unlikely(sksec->nlbl_state == NLBL_REQUIRE &&
-                     (mask & (MAY_WRITE | MAY_APPEND))))
-                rc = __selinux_netlbl_inode_permission(inode, mask);
-        up(&isec->sem);
-
-        return rc;
-}
+int selinux_netlbl_inode_permission(struct inode *inode, int mask);
 #else
 static inline void selinux_netlbl_cache_invalidate(void)
 {
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index 4f7642c7337e..27ee28ccf266 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -2544,24 +2544,39 @@ u32 selinux_netlbl_inet_conn_request(struct sk_buff *skb, u32 sock_sid)
 }
 
 /**
- * __selinux_netlbl_inode_permission - Label a socket using NetLabel
+ * selinux_netlbl_inode_permission - Verify the socket is NetLabel labeled
  * @inode: the file descriptor's inode
  * @mask: the permission mask
  *
  * Description:
- * Try to label a socket with the inode's SID using NetLabel.  Returns zero on
- * success, negative values on failure.
+ * Looks at a file's inode and if it is marked as a socket protected by
+ * NetLabel then verify that the socket has been labeled, if not try to label
+ * the socket now with the inode's SID.  Returns zero on success, negative
+ * values on failure.
  *
  */
-int __selinux_netlbl_inode_permission(struct inode *inode, int mask)
+int selinux_netlbl_inode_permission(struct inode *inode, int mask)
 {
         int rc;
-        struct socket *sock = SOCKET_I(inode);
-        struct sk_security_struct *sksec = sock->sk->sk_security;
+        struct inode_security_struct *isec;
+        struct sk_security_struct *sksec;
+        struct socket *sock;
 
-        lock_sock(sock->sk);
-        rc = selinux_netlbl_socket_setsid(sock, sksec->sid);
-        release_sock(sock->sk);
+        if (!S_ISSOCK(inode->i_mode))
+                return 0;
+
+        sock = SOCKET_I(inode);
+        isec = inode->i_security;
+        sksec = sock->sk->sk_security;
+        down(&isec->sem);
+        if (unlikely(sksec->nlbl_state == NLBL_REQUIRE &&
+                     (mask & (MAY_WRITE | MAY_APPEND)))) {
+                lock_sock(sock->sk);
+                rc = selinux_netlbl_socket_setsid(sock, sksec->sid);
+                release_sock(sock->sk);
+        } else
+                rc = 0;
+        up(&isec->sem);
 
         return rc;
 }