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-rw-r--r--kernel/exit.c5
-rw-r--r--kernel/futex.c3
-rw-r--r--kernel/ptrace.c3
-rw-r--r--kernel/signal.c9
-rw-r--r--kernel/sys.c3
5 files changed, 14 insertions, 9 deletions
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 @@ void set_special_pids(pid_t session, pid_t pgrp)
*/
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 @@ EXPORT_SYMBOL(allow_signal);
int disallow_signal(int sig)
{
- if (sig < 1 || sig > _NSIG)
+ if (!valid_signal(sig) || sig < 1)
return -EINVAL;
spin_lock_irq(&current->sighand->siglock);
diff --git a/kernel/futex.c b/kernel/futex.c
index 7b54a67..c7130f8 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -39,6 +39,7 @@
#include <linux/mount.h>
#include <linux/pagemap.h>
#include <linux/syscalls.h>
+#include <linux/signal.h>
#define FUTEX_HASHBITS (CONFIG_BASE_SMALL ? 4 : 8)
@@ -654,7 +655,7 @@ static int futex_fd(unsigned long uaddr, int signal)
int ret, err;
ret = -EINVAL;
- if (signal < 0 || signal > _NSIG)
+ if (!valid_signal(signal))
goto out;
ret = get_unused_fd();
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index f5cc1ce..8dcb8f6 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -16,6 +16,7 @@
#include <linux/smp_lock.h>
#include <linux/ptrace.h>
#include <linux/security.h>
+#include <linux/signal.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
@@ -166,7 +167,7 @@ bad:
int ptrace_detach(struct task_struct *child, unsigned int data)
{
- if ((unsigned long) data > _NSIG)
+ if (!valid_signal(data))
return -EIO;
/* Architecture-specific hardware disable .. */
diff --git a/kernel/signal.c b/kernel/signal.c
index e6567d7..8f3debc 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];
diff --git a/kernel/sys.c b/kernel/sys.c
index 7f43d6e..f64e97c 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -25,6 +25,7 @@
#include <linux/dcookies.h>
#include <linux/suspend.h>
#include <linux/tty.h>
+#include <linux/signal.h>
#include <linux/compat.h>
#include <linux/syscalls.h>
@@ -1637,7 +1638,7 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
switch (option) {
case PR_SET_PDEATHSIG:
sig = arg2;
- if (sig < 0 || sig > _NSIG) {
+ if (!valid_signal(sig)) {
error = -EINVAL;
break;
}
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