diff options
| -rw-r--r-- | kernel/audit.c | 38 |
1 files changed, 13 insertions, 25 deletions
diff --git a/kernel/audit.c b/kernel/audit.c index 58f704b..2a8728f 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -866,41 +866,29 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) break; case AUDIT_TTY_GET: { struct audit_tty_status s; - struct task_struct *tsk; - unsigned long flags; - - rcu_read_lock(); - tsk = find_task_by_vpid(pid); - if (tsk && lock_task_sighand(tsk, &flags)) { - s.enabled = tsk->signal->audit_tty != 0; - unlock_task_sighand(tsk, &flags); - } else - err = -ESRCH; - rcu_read_unlock(); - - if (!err) - audit_send_reply(NETLINK_CB(skb).pid, seq, - AUDIT_TTY_GET, 0, 0, &s, sizeof(s)); + struct task_struct *tsk = current; + + spin_lock_irq(&tsk->sighand->siglock); + s.enabled = tsk->signal->audit_tty != 0; + spin_unlock_irq(&tsk->sighand->siglock); + + audit_send_reply(NETLINK_CB(skb).pid, seq, + AUDIT_TTY_GET, 0, 0, &s, sizeof(s)); break; } case AUDIT_TTY_SET: { struct audit_tty_status *s; - struct task_struct *tsk; - unsigned long flags; + struct task_struct *tsk = current; if (nlh->nlmsg_len < sizeof(struct audit_tty_status)) return -EINVAL; s = data; if (s->enabled != 0 && s->enabled != 1) return -EINVAL; - rcu_read_lock(); - tsk = find_task_by_vpid(pid); - if (tsk && lock_task_sighand(tsk, &flags)) { - tsk->signal->audit_tty = s->enabled != 0; - unlock_task_sighand(tsk, &flags); - } else - err = -ESRCH; - rcu_read_unlock(); + + spin_lock_irq(&tsk->sighand->siglock); + tsk->signal->audit_tty = s->enabled != 0; + spin_unlock_irq(&tsk->sighand->siglock); break; } default: |
