1/*
 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
 3 * See LICENSE file for license details.
 4 */
 5#include "dwm.h"
 6#include <stdarg.h>
 7#include <stdio.h>
 8#include <stdlib.h>
 9#include <sys/wait.h>
10#include <unistd.h>
11
12/* static */
13
14static void
15bad_malloc(unsigned int size)
16{
17	eprint("fatal: could not malloc() %u bytes\n", size);
18}
19
20/* extern */
21
22void *
23emallocz(unsigned int size)
24{
25	void *res = calloc(1, size);
26
27	if(!res)
28		bad_malloc(size);
29	return res;
30}
31
32void
33eprint(const char *errstr, ...) {
34	va_list ap;
35
36	va_start(ap, errstr);
37	vfprintf(stderr, errstr, ap);
38	va_end(ap);
39	exit(EXIT_FAILURE);
40}
41
42void
43spawn(Arg *arg)
44{
45	char **argv = (char **)arg->argv;
46
47	if(!argv || !argv[0])
48		return;
49	if(fork() == 0) {
50		if(fork() == 0) {
51			if(dpy)
52				close(ConnectionNumber(dpy));
53			setsid();
54			execvp(argv[0], argv);
55			fprintf(stderr, "dwm: execvp %s", argv[0]);
56			perror(" failed");
57		}
58		exit(0);
59	}
60	wait(0);
61}