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
 7#include <stdarg.h>
 8#include <stdio.h>
 9#include <stdlib.h>
10#include <sys/wait.h>
11#include <unistd.h>
12
13/* static */
14
15static void
16bad_malloc(unsigned int size)
17{
18	fprintf(stderr, "fatal: could not malloc() %d bytes\n",
19			(int) size);
20	exit(EXIT_FAILURE);
21}
22
23/* extern */
24
25void *
26emallocz(unsigned int size)
27{
28	void *res = calloc(1, size);
29	if(!res)
30		bad_malloc(size);
31	return res;
32}
33
34void
35eprint(const char *errstr, ...) {
36	va_list ap;
37	va_start(ap, errstr);
38	vfprintf(stderr, errstr, ap);
39	va_end(ap);
40	exit(EXIT_FAILURE);
41}
42
43void
44spawn(Arg *arg)
45{
46	char **argv = (char **)arg->argv;
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(EXIT_FAILURE);
59	}
60	wait(0);
61}