commit 7ed20e1ad521b5f5df61bf6559ae60738e393741
author Jesper Juhl <juhl-lkml@dif.dk> Sun May 01 08:59:14 2005 -0700
committer Linus Torvalds <torvalds@ppc970.osdl.org> Sun May 01 08:59:14 2005 -0700
tree 90931724e45eaedb3445314e8b94e78253642395
parent e5bdd883a189243541e7a132385580703b049102

[PATCH] convert that currently tests _NSIG directly to use valid_signal()

Convert most of the current code that uses _NSIG directly to instead use
valid_signal().  This avoids gcc -W warnings and off-by-one errors.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index 93851bc..eb8da36 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -27,6 +27,7 @@
 #include <linux/mempolicy.h>
 #include <linux/cpuset.h>
 #include <linux/syscalls.h>
+#include <linux/signal.h>
 
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
@@ -277,7 +278,7 @@
  */
 int allow_signal(int sig)
 {
-	if (sig < 1 || sig > _NSIG)
+	if (!valid_signal(sig) || sig < 1)
 		return -EINVAL;
 
 	spin_lock_irq(&current->sighand->siglock);
@@ -298,7 +299,7 @@
 
 int disallow_signal(int sig)
 {
-	if (sig < 1 || sig > _NSIG)
+	if (!valid_signal(sig) || sig < 1)
 		return -EINVAL;
 
 	spin_lock_irq(&current->sighand->siglock);