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{
35	va_list ap;
36
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
48	if(!argv || !argv[0])
49		return;
50	if(fork() == 0) {
51		if(fork() == 0) {
52			if(dpy)
53				close(ConnectionNumber(dpy));
54			setsid();
55			execvp(argv[0], argv);
56			fprintf(stderr, "dwm: execvp %s", argv[0]);
57			perror(" failed");
58		}
59		exit(0);
60	}
61	wait(0);
62}