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annotate util.c @ 121:eb3165734f00 0.4

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prepared 0.4
author arg@10ksloc.org
date Thu, 20 Jul 2006 10:48:19 +0200
parents 4bee0aa5b286
children 61490330e90a
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rev   line source
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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
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7 #include <stdarg.h>
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8 #include <stdio.h>
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9 #include <stdlib.h>
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10 #include <sys/wait.h>
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11 #include <unistd.h>
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12
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13 /* static */
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15 static void
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16 bad_malloc(unsigned int size)
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17 {
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18 fprintf(stderr, "fatal: could not malloc() %d bytes\n",
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19 (int) size);
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20 exit(EXIT_FAILURE);
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21 }
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22
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23 /* extern */
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25 void *
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26 emallocz(unsigned int size)
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27 {
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28 void *res = calloc(1, size);
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29 if(!res)
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30 bad_malloc(size);
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31 return res;
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32 }
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33
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34 void
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35 eprint(const char *errstr, ...) {
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36 va_list ap;
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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 spawn(Arg *arg)
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45 {
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46 char **argv = (char **)arg->argv;
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47 if(!argv || !argv[0])
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48 return;
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49 if(fork() == 0) {
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50 if(fork() == 0) {
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51 if(dpy)
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52 close(ConnectionNumber(dpy));
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53 setsid();
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54 execvp(argv[0], argv);
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55 fprintf(stderr, "dwm: execvp %s", argv[0]);
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56 perror(" failed");
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57 }
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58 exit(EXIT_FAILURE);
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59 }
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60 wait(0);
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61 }