diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2016-01-09 22:55:37 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-01-27 16:41:04 -0800 |
| commit | f17c3662745ea5fd4510c3dff19f9975552e1865 (patch) | |
| tree | 2e8bcb99a77470e9cd2febbad2b75c9cf8f1e321 /drivers/tty/tty_audit.c | |
| parent | fbaa122718a1235f4f83baa3abaad21cfefdbc9d (diff) | |
| download | lwn-f17c3662745ea5fd4510c3dff19f9975552e1865.tar.gz lwn-f17c3662745ea5fd4510c3dff19f9975552e1865.zip | |
tty: audit: Check audit enable first
Audit is unlikely to be enabled; check first to exit asap.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/tty_audit.c')
| -rw-r--r-- | drivers/tty/tty_audit.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/tty/tty_audit.c b/drivers/tty/tty_audit.c index 6e33e41ec74d..269e41f45832 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; |