#include int main(void) { int retval = 0; sem_t *id; id = sem_open(TEST_PATH, O_CREAT, 0777, 1); if (id == SEM_FAILED) { perror("sem_open(O_CREAT)"); return 1; } sem_close(id); retval = sem_open_should_fail(TEST_PATH, O_CREAT | O_EXCL, 0777, 1, EEXIST); sem_unlink(TEST_PATH); return retval; }