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
30	if(!res)
31		bad_malloc(size);
32	return res;
33}
34
35void
36eprint(const char *errstr, ...) {
37	va_list ap;
38
39	va_start(ap, errstr);
40	vfprintf(stderr, errstr, ap);
41	va_end(ap);
42	exit(EXIT_FAILURE);
43}
44
45void
46spawn(Arg *arg)
47{
48	char **argv = (char **)arg->argv;
49
50	if(!argv || !argv[0])
51		return;
52	if(fork() == 0) {
53		if(fork() == 0) {
54			if(dpy)
55				close(ConnectionNumber(dpy));
56			setsid();
57			execvp(argv[0], argv);
58			fprintf(stderr, "dwm: execvp %s", argv[0]);
59			perror(" failed");
60		}
61		exit(EXIT_FAILURE);
62	}
63	wait(0);
64}