[PATCH 13/15] tty: audit: Check audit enable first
Audit is unlikely to be enabled; check first to exit asap.
Signed-off-by: Peter Hurley <peter(a)hurleysoftware.com>
---
drivers/tty/tty_audit.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/tty/tty_audit.c b/drivers/tty/tty_audit.c
index 6e33e41..269e41f 100644
--- a/drivers/tty/tty_audit.c
+++ b/drivers/tty/tty_audit.c
@@ -211,6 +211,10 @@ void tty_audit_add_data(struct tty_struct *tty, const void *data,
size_t size)
unsigned int audit_tty;
dev_t dev;
+ audit_tty = READ_ONCE(current->signal->audit_tty);
+ if (~audit_tty & AUDIT_TTY_ENABLE)
+ return;
+
if (unlikely(size == 0))
return;
@@ -218,9 +222,6 @@ void tty_audit_add_data(struct tty_struct *tty, const void *data,
size_t size)
&& tty->driver->subtype == PTY_TYPE_MASTER)
return;
- audit_tty = READ_ONCE(current->signal->audit_tty);
- if (~audit_tty & AUDIT_TTY_ENABLE)
- return;
if ((~audit_tty & AUDIT_TTY_LOG_PASSWD) && icanon && !L_ECHO(tty))
return;
--
2.6.3