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fix failure behavior of sem_open when sem does not exist

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This commit is contained in:
Rich Felker 2011-03-10 22:05:16 -05:00
commit 682a0f271f
1 changed files with 5 additions and 1 deletions
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6
src/thread/sem_open.c
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@ -100,7 +100,7 @@ sem_t *sem_open(const char *name, int flags, ...)
close(tfd);
unlink(tmp);
}
if (fstat(fd, &st) < 0) {
if (fd >= 0 && fstat(fd, &st) < 0) {
close(fd);
fd = -1;
}
@ -118,6 +118,10 @@ sem_t *sem_open(const char *name, int flags, ...)
break;
}
}
if (!(flags & O_CREAT)) {
pthread_spin_unlock(&lock);
return SEM_FAILED;
}
if (!linkat(AT_FDCWD, tmp, dir, name, 0)) {
fd = tfd;
close(dir);