annotate util.c @ 276:9a0a351dd910
pplied Sanders appendtag patch
| author |
Anselm R.Garbe <arg@10ksloc.org> |
| date |
Mon, 14 Aug 2006 15:31:58 +0200 |
| parents |
7b63c375d28c |
| children |
45af6a8a0cbf |
| rev |
line source |
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garbeam@2
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1 /*
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2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
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3 * See LICENSE file for license details.
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4 */
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5 #include "dwm.h"
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6 #include <stdarg.h>
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <sys/wait.h>
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10 #include <unistd.h>
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11
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12 /* static */
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13
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14 static void
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15 bad_malloc(unsigned int size)
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16 {
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17 eprint("fatal: could not malloc() %u bytes\n", size);
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18 }
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19
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20 /* extern */
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21
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22 void *
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23 emallocz(unsigned int size)
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24 {
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25 void *res = calloc(1, size);
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26
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27 if(!res)
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28 bad_malloc(size);
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29 return res;
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30 }
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31
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32 void
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33 eprint(const char *errstr, ...)
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34 {
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35 va_list ap;
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36
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37 va_start(ap, errstr);
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38 vfprintf(stderr, errstr, ap);
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39 va_end(ap);
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40 exit(EXIT_FAILURE);
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41 }
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42
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43 void *
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44 erealloc(void *ptr, unsigned int size)
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45 {
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46 void *res = realloc(ptr, size);
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47 if(!res)
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48 bad_malloc(size);
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49 return res;
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50 }
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51
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52 void
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53 spawn(Arg *arg)
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54 {
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55 static char *shell = NULL;
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56
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57 if(!shell && !(shell = getenv("SHELL")))
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58 shell = "/bin/sh";
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59
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60 if(!arg->cmd)
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61 return;
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62 if(fork() == 0) {
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63 if(fork() == 0) {
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64 if(dpy)
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65 close(ConnectionNumber(dpy));
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66 setsid();
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67 execl(shell, shell, "-c", arg->cmd, NULL);
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68 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
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69 perror(" failed");
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70 }
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71 exit(0);
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72 }
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73 wait(0);
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74 }
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