dwm-meillo
view util.c @ 132:59e997ca04a6
added a note how to achieve status info in the bar
| author | arg@10ksloc.org |
|---|---|
| date | Fri, 21 Jul 2006 09:59:11 +0200 |
| parents | 4bee0aa5b286 |
| children | c1185dc7a36e |
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 fprintf(stderr, "fatal: could not malloc() %d bytes\n",
19 (int) size);
20 exit(EXIT_FAILURE);
21 }
23 /* extern */
25 void *
26 emallocz(unsigned int size)
27 {
28 void *res = calloc(1, size);
30 if(!res)
31 bad_malloc(size);
32 return res;
33 }
35 void
36 eprint(const char *errstr, ...) {
37 va_list ap;
39 va_start(ap, errstr);
40 vfprintf(stderr, errstr, ap);
41 va_end(ap);
42 exit(EXIT_FAILURE);
43 }
45 void
46 spawn(Arg *arg)
47 {
48 char **argv = (char **)arg->argv;
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 }