tty: audit: Combine push functions

tty_audit_push() and tty_audit_push_current() perform identical
tasks; eliminate the tty_audit_push() implementation and the
tty_audit_push_current() name.
Signed-off-by: NPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/tty_audit.c

@@ -172,12 +172,11 @@ void tty_audit_tiocsti(struct tty_struct *tty, char ch)
 }
 
 /**
- * tty_audit_push_current -	Flush current's pending audit data
+ *	tty_audit_push	-	Flush current's pending audit data
  *
- * Try to lock sighand and get a reference to the tty audit buffer if available.
- * Flush the buffer or return an appropriate error code.
+ *	Returns 0 if success, -EPERM if tty audit is disabled
  */
-int tty_audit_push_current(void)
+int tty_audit_push(void)
 {
 	struct tty_audit_buf *buf = ERR_PTR(-EPERM);
 	unsigned long flags;
@@ -309,31 +308,3 @@ void tty_audit_add_data(struct tty_struct *tty, const void *data, size_t size)
 	mutex_unlock(&buf->mutex);
 	tty_audit_buf_put(buf);
 }
-
-/**
- *	tty_audit_push	-	Push buffered data out
- *
- *	Make sure no audit data is pending on the current process.
- */
-void tty_audit_push(void)
-{
-	struct tty_audit_buf *buf;
-	unsigned long flags;
-
-	spin_lock_irqsave(&current->sighand->siglock, flags);
-	if (likely(!current->signal->audit_tty)) {
-		spin_unlock_irqrestore(&current->sighand->siglock, flags);
-		return;
-	}
-	buf = current->signal->tty_audit_buf;
-	if (buf)
-		atomic_inc(&buf->count);
-	spin_unlock_irqrestore(&current->sighand->siglock, flags);
-
-	if (buf) {
-		mutex_lock(&buf->mutex);
-		tty_audit_buf_push(buf);
-		mutex_unlock(&buf->mutex);
-		tty_audit_buf_put(buf);
-	}
-}

include/linux/tty.h

@@ -597,8 +597,7 @@ extern void tty_audit_add_data(struct tty_struct *tty, const void *data,
 extern void tty_audit_exit(void);
 extern void tty_audit_fork(struct signal_struct *sig);
 extern void tty_audit_tiocsti(struct tty_struct *tty, char ch);
-extern void tty_audit_push(void);
-extern int tty_audit_push_current(void);
+extern int tty_audit_push(void);
 #else
 static inline void tty_audit_add_data(struct tty_struct *tty, const void *data,
 				      size_t size)
@@ -613,10 +612,7 @@ static inline void tty_audit_exit(void)
 static inline void tty_audit_fork(struct signal_struct *sig)
 {
 }
-static inline void tty_audit_push(void)
-{
-}
-static inline int tty_audit_push_current(void)
+static inline int tty_audit_push(void)
 {
 	return 0;
 }

kernel/audit.c

@@ -920,7 +920,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		if (err == 1) { /* match or error */
 			err = 0;
 			if (msg_type == AUDIT_USER_TTY) {
-				err = tty_audit_push_current();
+				err = tty_audit_push();
 				if (err)
 					break;
 			}