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path: root/drivers/char/tty_io.c
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Diffstat (limited to 'drivers/char/tty_io.c')
-rw-r--r--drivers/char/tty_io.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index fde69e589ca7..de37ebc3a4cf 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1503,6 +1503,15 @@ int tty_hung_up_p(struct file * filp)
EXPORT_SYMBOL(tty_hung_up_p);
+/**
+ * is_tty - checker whether file is a TTY
+ */
+int is_tty(struct file *filp)
+{
+ return filp->f_op->read == tty_read
+ || filp->f_op->read == hung_up_tty_read;
+}
+
static void session_clear_tty(struct pid *session)
{
struct task_struct *p;
@@ -2673,6 +2682,7 @@ got_driver:
__proc_set_tty(current, tty);
spin_unlock_irq(&current->sighand->siglock);
mutex_unlock(&tty_mutex);
+ tty_audit_opening();
return 0;
}
@@ -2735,8 +2745,10 @@ static int ptmx_open(struct inode * inode, struct file * filp)
check_tty_count(tty, "tty_open");
retval = ptm_driver->open(tty, filp);
- if (!retval)
+ if (!retval) {
+ tty_audit_opening();
return 0;
+ }
out1:
release_dev(filp);
return retval;