#include <sys/stat.h>
#include <stdlib.h>
#include <pthread.h>
-#include "libc.h"
+#include "lock.h"
+#include "fork_impl.h"
-char *__shm_mapname(const char *, char *);
+#define malloc __libc_malloc
+#define calloc __libc_calloc
+#define realloc undef
+#define free undef
static struct {
ino_t ino;
sem_t *sem;
int refcnt;
} *semtab;
-static int lock[2];
+static volatile int lock[1];
+volatile int *const __sem_open_lockptr = lock;
#define FLAGS (O_RDWR|O_NOFOLLOW|O_CLOEXEC|O_NONBLOCK)
e = link(tmp, name) ? errno : 0;
unlink(tmp);
if (!e) break;
+ munmap(map, sizeof(sem_t));
/* Failure is only fatal when doing an exclusive open;
* otherwise, next iteration will try to open the
* existing file. */
int i;
LOCK(lock);
for (i=0; i<SEM_NSEMS_MAX && semtab[i].sem != sem; i++);
- if (!--semtab[i].refcnt) {
- semtab[i].sem = 0;
- semtab[i].ino = 0;
+ if (--semtab[i].refcnt) {
+ UNLOCK(lock);
+ return 0;
}
+ semtab[i].sem = 0;
+ semtab[i].ino = 0;
UNLOCK(lock);
munmap(sem, sizeof *sem);
return 0;