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authorOleg Nesterov <oleg@redhat.com>2013-01-05 19:13:29 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2013-01-05 19:34:54 -0800
commit0c4a842349b27d361f1503f6437df303e1b541c9 (patch)
tree6f52ce9adce2db7cdb03adf60dc0723cd2a5cc44 /kernel
parent5ba53ff648e785445a32ba39112ed07e4cf588d0 (diff)
downloadlinaro-lsk-0c4a842349b27d361f1503f6437df303e1b541c9.tar.gz
signals: set_current_blocked() can use __set_current_blocked()
Cleanup. And I think we need more cleanups, in particular __set_current_blocked() and sigprocmask() should die. Nobody should ever block SIGKILL or SIGSTOP. - Change set_current_blocked() to use __set_current_blocked() - Change sys_sigprocmask() to use set_current_blocked(), this way it should not worry about SIGKILL/SIGSTOP. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/signal.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 9692499c77c..372771e948c 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2528,11 +2528,8 @@ static void __set_task_blocked(struct task_struct *tsk, const sigset_t *newset)
*/
void set_current_blocked(sigset_t *newset)
{
- struct task_struct *tsk = current;
sigdelsetmask(newset, sigmask(SIGKILL) | sigmask(SIGSTOP));
- spin_lock_irq(&tsk->sighand->siglock);
- __set_task_blocked(tsk, newset);
- spin_unlock_irq(&tsk->sighand->siglock);
+ __set_current_blocked(newset);
}
void __set_current_blocked(const sigset_t *newset)
@@ -3204,7 +3201,6 @@ SYSCALL_DEFINE3(sigprocmask, int, how, old_sigset_t __user *, nset,
if (nset) {
if (copy_from_user(&new_set, nset, sizeof(*nset)))
return -EFAULT;
- new_set &= ~(sigmask(SIGKILL) | sigmask(SIGSTOP));
new_blocked = current->blocked;
@@ -3222,7 +3218,7 @@ SYSCALL_DEFINE3(sigprocmask, int, how, old_sigset_t __user *, nset,
return -EINVAL;
}
- __set_current_blocked(&new_blocked);
+ set_current_blocked(&new_blocked);
}
if (oset) {