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audit: move audit_get_tty to reduce scope and kabi changes

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The only users of audit_get_tty and audit_put_tty are internal to
audit, so move it out of include/linux/audit.h to kernel.h and create
a proper function rather than inlining it.  This also reduces kABI
changes.

Suggested-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
[PM: line wrapped description]
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Richard Guy Briggs 2016-06-28 12:07:50 -04:00 • committed by Paul Moore
parent 76a658c20e
commit 3f5be2da85
4 changed files with 21 additions and 25 deletions
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17
kernel/audit.c
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@ -1866,6 +1866,23 @@ out_null:
audit_log_format(ab, " exe=(null)");
}
struct tty_struct *audit_get_tty(struct task_struct *tsk)
{
struct tty_struct *tty = NULL;
unsigned long flags;
spin_lock_irqsave(&tsk->sighand->siglock, flags);
if (tsk->signal)
tty = tty_kref_get(tsk->signal->tty);
spin_unlock_irqrestore(&tsk->sighand->siglock, flags);
return tty;
}
void audit_put_tty(struct tty_struct *tty)
{
tty_kref_put(tty);
}
void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk)
{
const struct cred *cred;