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Merge "Add argument checking to sigemptyset(3) and friends."

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This commit is contained in:
Elliott Hughes
2012-12-03 07:45:45 -08:00
committed by Gerrit Code Review
parent 3acc908c79 da73f655fc
commit 46d64ed2e5
3 changed files with 141 additions and 30 deletions
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73
libc/include/signal.h
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@@ -28,6 +28,7 @@
#ifndef _SIGNAL_H_
#define _SIGNAL_H_
#include <errno.h>
#include <sys/cdefs.h>
#include <limits.h> /* For LONG_BIT */
#include <string.h> /* For memset() */
@@ -53,45 +54,57 @@ typedef int sig_atomic_t;
# define _NSIG 64
#endif
extern const char * const sys_siglist[];
extern const char * const sys_signame[];
extern const char* const sys_siglist[];
extern const char* const sys_signame[];
static __inline__ int sigismember(sigset_t *set, int signum)
{
unsigned long *local_set = (unsigned long *)set;
signum--;
return (int)((local_set[signum/LONG_BIT] >> (signum%LONG_BIT)) & 1);
static __inline__ int sigismember(sigset_t* set, int signum) {
if (set == NULL || signum < 1 || signum >= 8*sizeof(sigset_t)) {
errno = EINVAL;
return -1;
}
unsigned long* local_set = (unsigned long*) set;
signum--;
return (int) ((local_set[signum/LONG_BIT] >> (signum%LONG_BIT)) & 1);
}
static __inline__ int sigaddset(sigset_t *set, int signum)
{
unsigned long *local_set = (unsigned long *)set;
signum--;
local_set[signum/LONG_BIT] |= 1UL << (signum%LONG_BIT);
return 0;
static __inline__ int sigaddset(sigset_t* set, int signum) {
if (set == NULL || signum < 1 || signum >= 8*sizeof(sigset_t)) {
errno = EINVAL;
return -1;
}
unsigned long* local_set = (unsigned long*) set;
signum--;
local_set[signum/LONG_BIT] |= 1UL << (signum%LONG_BIT);
return 0;
}
static __inline__ int sigdelset(sigset_t *set, int signum)
{
unsigned long *local_set = (unsigned long *)set;
signum--;
local_set[signum/LONG_BIT] &= ~(1UL << (signum%LONG_BIT));
return 0;
static __inline__ int sigdelset(sigset_t* set, int signum) {
if (set == NULL || signum < 1 || signum >= 8*sizeof(sigset_t)) {
errno = EINVAL;
return -1;
}
unsigned long* local_set = (unsigned long*) set;
signum--;
local_set[signum/LONG_BIT] &= ~(1UL << (signum%LONG_BIT));
return 0;
}
static __inline__ int sigemptyset(sigset_t *set)
{
memset(set, 0, sizeof *set);
return 0;
static __inline__ int sigemptyset(sigset_t* set) {
if (set == NULL) {
errno = EINVAL;
return -1;
}
memset(set, 0, sizeof *set);
return 0;
}
static __inline__ int sigfillset(sigset_t *set)
{
memset(set, ~0, sizeof *set);
return 0;
static __inline__ int sigfillset(sigset_t* set) {
if (set == NULL) {
errno = EINVAL;
return -1;
}
memset(set, ~0, sizeof *set);
return 0;
}