X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=arch%2Fm68knommu%2Fkernel%2Fsignal.c;h=c973230dad828fade729f11bd0027cd23ed88792;hb=710e91e455caf5cfec02892d667b41f312ec166c;hp=5ab6a04af14ed921f7e0a77175d0ecdda5e4b8ae;hpb=d15c22e78674f9a5bc0de0932a43abe1aafae303;p=deliverable%2Flinux.git

diff --git a/arch/m68knommu/kernel/signal.c b/arch/m68knommu/kernel/signal.c
index 5ab6a04af14e..c973230dad82 100644
--- a/arch/m68knommu/kernel/signal.c
+++ b/arch/m68knommu/kernel/signal.c
@@ -53,60 +53,25 @@
 
 void ret_from_user_signal(void);
 void ret_from_user_rt_signal(void);
-asmlinkage int do_signal(sigset_t *oldset, struct pt_regs *regs);
 
 /*
  * Atomically swap in the new signal mask, and wait for a signal.
  */
-asmlinkage int do_sigsuspend(struct pt_regs *regs)
+asmlinkage int
+sys_sigsuspend(int unused0, int unused1, old_sigset_t mask)
 {
-	old_sigset_t mask = regs->d3;
-	sigset_t saveset;
-
 	mask &= _BLOCKABLE;
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	siginitset(&current->blocked, mask);
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs->d0 = -EINTR;
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		if (do_signal(&saveset, regs))
-			return -EINTR;
-	}
-}
-
-asmlinkage int
-do_rt_sigsuspend(struct pt_regs *regs)
-{
-	sigset_t *unewset = (sigset_t *)regs->d1;
-	size_t sigsetsize = (size_t)regs->d2;
-	sigset_t saveset, newset;
-
-	/* XXX: Don't preclude handling different sized sigset_t's.  */
-	if (sigsetsize != sizeof(sigset_t))
-		return -EINVAL;
-
-	if (copy_from_user(&newset, unewset, sizeof(newset)))
-		return -EFAULT;
-	sigdelsetmask(&newset, ~_BLOCKABLE);
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_restore_sigmask();
 
-	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
-	current->blocked = newset;
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	regs->d0 = -EINTR;
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		if (do_signal(&saveset, regs))
-			return -EINTR;
-	}
+	return -ERESTARTNOHAND;
 }
 
 asmlinkage int 
@@ -739,9 +704,6 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
 	else
 		setup_frame(sig, ka, oldset, regs);
 
-	if (ka->sa.sa_flags & SA_ONESHOT)
-		ka->sa.sa_handler = SIG_DFL;
-
 	spin_lock_irq(&current->sighand->siglock);
 	sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
 	if (!(ka->sa.sa_flags & SA_NODEFER))
@@ -755,11 +717,12 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
  * want to handle. Thus you cannot kill init even with a SIGKILL even by
  * mistake.
  */
-asmlinkage int do_signal(sigset_t *oldset, struct pt_regs *regs)
+asmlinkage int do_signal(struct pt_regs *regs)
 {
 	struct k_sigaction ka;
 	siginfo_t info;
 	int signr;
+	sigset_t *oldset;
 
 	/*
 	 * We want the common case to go fast, which
@@ -770,13 +733,16 @@ asmlinkage int do_signal(sigset_t *oldset, struct pt_regs *regs)
 	if (!user_mode(regs))
 		return 1;
 
-	if (!oldset)
+	if (test_thread_flag(TIF_RESTORE_SIGMASK))
+		oldset = &current->saved_sigmask;
+	else
 		oldset = &current->blocked;
 
 	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
 	if (signr > 0) {
 		/* Whee!  Actually deliver the signal.  */
 		handle_signal(signr, &ka, &info, oldset, regs);
+		clear_thread_flag(TIF_RESTORE_SIGMASK);
 		return 1;
 	}
 
@@ -785,5 +751,11 @@ asmlinkage int do_signal(sigset_t *oldset, struct pt_regs *regs)
 		/* Restart the system call - no handlers present */
 		handle_restart(regs, NULL, 0);
 	}
+
+	/* If there's no signal to deliver, we just restore the saved mask.  */
+	if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+		clear_thread_flag(TIF_RESTORE_SIGMASK);
+		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+	}
 	return 0;
 }