diff options
| -rw-r--r-- | src/thread/sem_open.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/thread/sem_open.c b/src/thread/sem_open.c index 8a72d4c6..66f12ee4 100644 --- a/src/thread/sem_open.c +++ b/src/thread/sem_open.c @@ -67,15 +67,15 @@ sem_t *sem_open(const char *name, int flags, ...) flags &= (O_CREAT|O_EXCL); + pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs); + /* Early failure check for exclusive open; otherwise the case * where the semaphore already exists is expensive. */ if (flags == (O_CREAT|O_EXCL) && access(name, F_OK) == 0) { errno = EEXIST; - return SEM_FAILED; + goto fail; } - pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs); - for (;;) { /* If exclusive mode is not requested, try opening an * existing file first and fall back to creation. */ @@ -153,6 +153,9 @@ sem_t *sem_open(const char *name, int flags, ...) fail: pthread_setcancelstate(cs, 0); + LOCK(lock); + semtab[slot].sem = 0; + UNLOCK(lock); return SEM_FAILED; } |