aewl
view util.c @ 138:c1185dc7a36e
some cleanups/fixes inspired by Jukka Salmi's feedback
| author | arg@10ksloc.org |
|---|---|
| date | Fri, 21 Jul 2006 18:34:10 +0200 |
| parents | 61490330e90a |
| children | 21071ae1fe68 |
line source
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"
7 #include <stdarg.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <sys/wait.h>
11 #include <unistd.h>
13 /* static */
15 static void
16 bad_malloc(unsigned int size)
17 {
18 eprint("fatal: could not malloc() %u bytes\n", size);
19 }
21 /* extern */
23 void *
24 emallocz(unsigned int size)
25 {
26 void *res = calloc(1, size);
28 if(!res)
29 bad_malloc(size);
30 return res;
31 }
33 void
34 eprint(const char *errstr, ...) {
35 va_list ap;
37 va_start(ap, errstr);
38 vfprintf(stderr, errstr, ap);
39 va_end(ap);
40 exit(EXIT_FAILURE);
41 }
43 void
44 spawn(Arg *arg)
45 {
46 char **argv = (char **)arg->argv;
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 }