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authorJesper Juhl <juhl-lkml@dif.dk>2005-05-01 08:59:14 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 08:59:14 -0700
commit7ed20e1ad521b5f5df61bf6559ae60738e393741 (patch)
tree90931724e45eaedb3445314e8b94e78253642395 /kernel/signal.c
parente5bdd883a189243541e7a132385580703b049102 (diff)
downloadlwn-7ed20e1ad521b5f5df61bf6559ae60738e393741.tar.gz
lwn-7ed20e1ad521b5f5df61bf6559ae60738e393741.zip
[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>
Diffstat (limited to 'kernel/signal.c')
-rw-r--r--kernel/signal.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index e6567d7f2b62..8f3debc77c5b 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -23,6 +23,7 @@
#include <linux/syscalls.h>
#include <linux/ptrace.h>
#include <linux/posix-timers.h>
+#include <linux/signal.h>
#include <asm/param.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
@@ -646,7 +647,7 @@ static int check_kill_permission(int sig, struct siginfo *info,
struct task_struct *t)
{
int error = -EINVAL;
- if (sig < 0 || sig > _NSIG)
+ if (!valid_signal(sig))
return error;
error = -EPERM;
if ((!info || ((unsigned long)info != 1 &&
@@ -1245,7 +1246,7 @@ send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
* Make sure legacy kernel users don't send in bad values
* (normal paths check this in check_kill_permission).
*/
- if (sig < 0 || sig > _NSIG)
+ if (!valid_signal(sig))
return -EINVAL;
/*
@@ -1520,7 +1521,7 @@ void do_notify_parent(struct task_struct *tsk, int sig)
if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)
sig = 0;
}
- if (sig > 0 && sig <= _NSIG)
+ if (valid_signal(sig) && sig > 0)
__group_send_sig_info(sig, &info, tsk->parent);
__wake_up_parent(tsk, tsk->parent);
spin_unlock_irqrestore(&psig->siglock, flags);
@@ -2364,7 +2365,7 @@ do_sigaction(int sig, const struct k_sigaction *act, struct k_sigaction *oact)
{
struct k_sigaction *k;
- if (sig < 1 || sig > _NSIG || (act && sig_kernel_only(sig)))
+ if (!valid_signal(sig) || sig < 1 || (act && sig_kernel_only(sig)))
return -EINVAL;
k = &current->sighand->action[sig-1];