commit efec8a6

If sem_open() fails, try again with sem_init().

 1@@ -483,6 +483,7 @@ void httpd(void)
 2     int n;
 3     time_t start_time = time(NULL);
 4     char sem_name[24];
 5+    sem_t anon_job_sem;
 6 
 7     address = xs_dict_get(srv_config, "address");
 8     port    = xs_number_get(xs_dict_get(srv_config, "port"));
 9@@ -510,6 +511,18 @@ void httpd(void)
10     pthread_mutex_init(&job_mutex, NULL);
11     sprintf(sem_name, "/job_%d", getpid());
12     job_sem = sem_open(sem_name, O_CREAT, 0644, 0);
13+
14+    if (job_sem == NULL) {
15+        /* error opening a named semaphore; try with an anonymous one */
16+        if (sem_init(&anon_job_sem, 0, 0) != -1)
17+            job_sem = &anon_job_sem;
18+    }
19+
20+    if (job_sem == NULL) {
21+        srv_log(xs_fmt("fatal error: cannot create semaphore -- cannot continue"));
22+        return;
23+    }
24+
25     job_fifo = xs_list_new();
26 
27     /* initialize sleep control */