Commit 7ed20e1a authored by Jesper Juhl's avatar Jesper Juhl Committed by Linus Torvalds

[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: 's avatarJesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: 's avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: 's avatarLinus Torvalds <torvalds@osdl.org>
parent e5bdd883
......@@ -14,6 +14,7 @@
#include <linux/user.h>
#include <linux/slab.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
......@@ -335,7 +336,7 @@ do_sys_ptrace(long request, long pid, long addr, long data,
/* continue and stop at next (return from) syscall */
case PTRACE_CONT: /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -365,7 +366,7 @@ do_sys_ptrace(long request, long pid, long addr, long data,
case PTRACE_SINGLESTEP: /* execute single instruction. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
/* Mark single stepping. */
child->thread_info->bpt_nsaved = -1;
......
......@@ -19,6 +19,7 @@
#include <linux/user.h>
#include <linux/security.h>
#include <linux/init.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
......@@ -693,7 +694,7 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
case PTRACE_SYSCALL:
case PTRACE_CONT:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -728,7 +729,7 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
*/
case PTRACE_SINGLESTEP:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
child->ptrace |= PT_SINGLESTEP;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......
......@@ -18,6 +18,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
......@@ -591,7 +592,7 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
case PTRACE_SYSCALL:
case PTRACE_CONT:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -626,7 +627,7 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
*/
case PTRACE_SINGLESTEP:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
child->ptrace |= PT_SINGLESTEP;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......
......@@ -10,6 +10,7 @@
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -184,7 +185,7 @@ sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_CONT:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
......@@ -219,7 +220,7 @@ sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......
......@@ -20,6 +20,7 @@
#include <linux/user.h>
#include <linux/config.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -239,7 +240,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -267,7 +268,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
ptrace_enable(child);
......
......@@ -24,6 +24,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/config.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -171,7 +172,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data >= _NSIG)
if (!valid_signal(data))
break ;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -202,7 +203,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->exit_code = data;
......
......@@ -16,6 +16,7 @@
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
......@@ -511,7 +512,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -543,7 +544,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_singlestep(child);
......
......@@ -17,6 +17,7 @@
#include <linux/user.h>
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/signal.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
......@@ -1481,7 +1482,7 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data)
case PTRACE_CONT:
/* restart after signal. */
ret = -EIO;
if (data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -1520,7 +1521,7 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data)
/* let child execute for one instruction */
case PTRACE_SINGLEBLOCK:
ret = -EIO;
if (data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......
......@@ -24,6 +24,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/string.h>
#include <linux/signal.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
......@@ -665,7 +666,7 @@ do_ptrace(long request, struct task_struct *child, long addr, long data)
case PTRACE_SYSCALL:
case PTRACE_CONT:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -700,7 +701,7 @@ do_ptrace(long request, struct task_struct *child, long addr, long data)
unsigned long pc, insn;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
if ((child->ptrace & PT_DTRACE) == 0) {
......
......@@ -19,6 +19,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/config.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -251,7 +252,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
long tmp;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
child->thread.work.syscall_trace = ~0;
......@@ -292,7 +293,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
long tmp;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
child->thread.work.syscall_trace = 0;
tmp = get_reg(child, PT_SR) | (TRACE_BITS << 16);
......
......@@ -19,6 +19,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/config.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -240,7 +241,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
long tmp;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -278,7 +279,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
long tmp;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
tmp = get_reg(child, PT_SR) | (TRACE_BITS << 16);
......
......@@ -26,6 +26,7 @@
#include <linux/smp_lock.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/cpu.h>
#include <asm/fpu.h>
......@@ -257,7 +258,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......
......@@ -24,6 +24,7 @@
#include <linux/smp_lock.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/cpu.h>
#include <asm/fpu.h>
......@@ -241,7 +242,7 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned int) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......
......@@ -17,6 +17,7 @@
#include <linux/personality.h>
#include <linux/security.h>
#include <linux/compat.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
......@@ -285,7 +286,7 @@ long sys_ptrace(long request, pid_t pid, long addr, long data)
ret = -EIO;
DBG("sys_ptrace(%s)\n",
request == PTRACE_SYSCALL ? "SYSCALL" : "CONT");
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
child->ptrace &= ~(PT_SINGLESTEP|PT_BLOCKSTEP);
if (request == PTRACE_SYSCALL) {
......@@ -311,7 +312,7 @@ long sys_ptrace(long request, pid_t pid, long addr, long data)
case PTRACE_SINGLEBLOCK:
DBG("sys_ptrace(SINGLEBLOCK)\n");
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->ptrace &= ~PT_SINGLESTEP;
......@@ -328,7 +329,7 @@ long sys_ptrace(long request, pid_t pid, long addr, long data)
case PTRACE_SINGLESTEP:
DBG("sys_ptrace(SINGLESTEP)\n");
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......
......@@ -26,6 +26,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -356,7 +357,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -389,7 +390,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_single_step(child);
......
......@@ -28,6 +28,7 @@
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -162,7 +163,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -194,7 +195,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_single_step(child);
......
......@@ -26,6 +26,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -293,7 +294,7 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -325,7 +326,7 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_single_step(child);
......
......@@ -32,6 +32,7 @@
#include <linux/user.h>
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/signal.h>
#include <asm/segment.h>
#include <asm/page.h>
......@@ -609,7 +610,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
/* continue and stop at next (return from) syscall */
case PTRACE_CONT:
/* restart after signal. */
if ((unsigned long) data >= _NSIG)
if (!valid_signal(data))
return -EIO;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -637,7 +638,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
case PTRACE_SINGLESTEP:
/* set the trap flag. */
if ((unsigned long) data >= _NSIG)
if (!valid_signal(data))
return -EIO;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->exit_code = data;
......
......@@ -20,6 +20,7 @@
#include <linux/user.h>
#include <linux/slab.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/uaccess.h>
......@@ -197,7 +198,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -228,7 +229,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
struct pt_regs *dummy = NULL;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
if ((child->ptrace & PT_DTRACE) == 0) {
......
......@@ -27,6 +27,7 @@
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/uaccess.h>
......@@ -255,7 +256,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
......@@ -285,7 +286,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
struct pt_regs *regs;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
if ((child->ptrace & PT_DTRACE) == 0) {
......
......@@ -18,6 +18,7 @@
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/pgtable.h>
#include <asm/system.h>
......@@ -526,7 +527,7 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
addr = 1;
case PTRACE_CONT: { /* restart after signal. */
if (data > _NSIG) {
if (!valid_signal(data)) {
pt_error_return(regs, EIO);
goto out_tsk;
}
......
......@@ -19,6 +19,7 @@
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/asi.h>
#include <asm/pgtable.h>
......@@ -559,7 +560,7 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
addr = 1;
case PTRACE_CONT: { /* restart after signal. */
if (data > _NSIG) {
if (!valid_signal(data)) {
pt_error_return(regs, EIO);
goto out_tsk;
}
......
......@@ -143,7 +143,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
child->ptrace &= ~PT_DTRACE;
......@@ -179,7 +179,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->ptrace |= PT_DTRACE;
......
......@@ -23,6 +23,7 @@
#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <linux/ptrace.h>
#include <linux/signal.h>
#include <asm/errno.h>
#include <asm/ptrace.h>
......@@ -208,7 +209,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
/* Execute a single instruction. */
case PTRACE_SINGLESTEP:
rval = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
/* Turn CHILD's single-step flag on or off. */
......
......@@ -18,6 +18,7 @@
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
......@@ -467,7 +468,7 @@ asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, long data
case PTRACE_CONT: /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child,TIF_SYSCALL_TRACE);
......@@ -529,7 +530,7 @@ asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, long data
case PTRACE_SINGLESTEP: /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child,TIF_SYSCALL_TRACE);
set_singlestep(child);
......
......@@ -24,6 +24,7 @@
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/console.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/uaccess.h>
......@@ -641,7 +642,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
extern int spawnpid, spawnsig;
if (!perm || !capable(CAP_KILL))
return -EPERM;
if (arg < 1 || arg > _NSIG || arg == SIGKILL)
if (!valid_signal(arg) || arg < 1 || arg == SIGKILL)
return -EINVAL;
spawnpid = current->pid;
spawnsig = arg;
......
......@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/security.h>
#include <linux/ptrace.h>
#include <linux/signal.h>
#include <asm/poll.h>
#include <asm/siginfo.h>
......@@ -308,7 +309,7 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg,
break;
case F_SETSIG:
/* arg == 0 restores default behaviour. */
if (arg < 0 || arg > _NSIG) {
if (!valid_signal(arg)) {
break;
}
err = 0;
......
......@@ -23,6 +23,7 @@
#include <linux/skbuff.h>
#include <linux/netlink.h>
#include <linux/syscalls.h>
#include <linux/signal.h>
#include <net/sock.h>
#include "util.h"
......@@ -976,8 +977,7 @@ asmlinkage long sys_mq_notify(mqd_t mqdes,
notification.sigev_notify != SIGEV_THREAD))
return -EINVAL;
if (notification.sigev_notify == SIGEV_SIGNAL &&
(notification.sigev_signo < 0 ||
notification.sigev_signo > _NSIG)) {
!valid_signal(notification.sigev_signo)) {
return -EINVAL;
}
if (notification.sigev_notify == SIGEV_THREAD) {
......
......@@ -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);
......
......@@ -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();
......
......@@ -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 @@ int ptrace_attach(struct task_struct *task)
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 .. */
......
......@@ -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)