annotate util.c @ 16:cb5813c117e2
merge heads
| author |
paulo |
| date |
Mon, 09 Apr 2018 20:13:53 -0600 |
| parents |
7024076fa948 |
| children |
|
| rev |
line source |
|
paulo@0
|
1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
|
|
paulo@0
|
2 * See LICENSE file for license details.
|
|
paulo@0
|
3 */
|
|
paulo@0
|
4 #include "dwm.h"
|
|
paulo@0
|
5 #include <stdarg.h>
|
|
paulo@0
|
6 #include <stdio.h>
|
|
paulo@0
|
7 #include <stdlib.h>
|
|
paulo@0
|
8 #include <sys/wait.h>
|
|
paulo@0
|
9 #include <unistd.h>
|
|
paulo@0
|
10
|
|
paulo@0
|
11 /* extern */
|
|
paulo@0
|
12
|
|
paulo@0
|
13 void *
|
|
paulo@0
|
14 emallocz(unsigned int size) {
|
|
paulo@0
|
15 void *res = calloc(1, size);
|
|
paulo@0
|
16
|
|
paulo@0
|
17 if(!res)
|
|
paulo@0
|
18 eprint("fatal: could not malloc() %u bytes\n", size);
|
|
paulo@0
|
19 return res;
|
|
paulo@0
|
20 }
|
|
paulo@0
|
21
|
|
paulo@0
|
22 void
|
|
paulo@0
|
23 eprint(const char *errstr, ...) {
|
|
paulo@0
|
24 va_list ap;
|
|
paulo@0
|
25
|
|
paulo@0
|
26 va_start(ap, errstr);
|
|
paulo@0
|
27 vfprintf(stderr, errstr, ap);
|
|
paulo@0
|
28 va_end(ap);
|
|
paulo@0
|
29 exit(EXIT_FAILURE);
|
|
paulo@0
|
30 }
|
|
paulo@0
|
31
|
|
paulo@0
|
32 void
|
|
paulo@0
|
33 spawn(Arg *arg) {
|
|
paulo@0
|
34 static char *shell = NULL;
|
|
paulo@0
|
35
|
|
paulo@0
|
36 if(!shell && !(shell = getenv("SHELL")))
|
|
paulo@0
|
37 shell = "/bin/sh";
|
|
paulo@0
|
38 if(!arg->cmd)
|
|
paulo@0
|
39 return;
|
|
paulo@0
|
40 /* The double-fork construct avoids zombie processes and keeps the code
|
|
paulo@0
|
41 * clean from stupid signal handlers. */
|
|
paulo@0
|
42 if(fork() == 0) {
|
|
paulo@0
|
43 if(fork() == 0) {
|
|
paulo@0
|
44 if(dpy)
|
|
paulo@0
|
45 close(ConnectionNumber(dpy));
|
|
paulo@0
|
46 setsid();
|
|
paulo@0
|
47 execl(shell, shell, "-c", arg->cmd, (char *)NULL);
|
|
paulo@0
|
48 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
|
|
paulo@0
|
49 perror(" failed");
|
|
paulo@0
|
50 }
|
|
paulo@0
|
51 exit(0);
|
|
paulo@0
|
52 }
|
|
paulo@0
|
53 wait(0);
|
|
paulo@0
|
54 }
|
|
paulo@6
|
55
|
|
paulo@6
|
56 void
|
|
paulo@6
|
57 spawn_insert(Arg *arg) {
|
|
paulo@6
|
58 func_insert(spawn, arg);
|
|
paulo@6
|
59 }
|
