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annotate util.c @ 105:3e74cc981e9b

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refactored Sanders code somewhat
author arg@10ksloc.org
date Wed, 19 Jul 2006 13:52:31 +0200
parents 052fe7498930
children 61490330e90a
rev   line source
garbeam@2 1 /*
garbeam@2 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
garbeam@2 3 * See LICENSE file for license details.
garbeam@2 4 */
garbeam@76 5 #include "dwm.h"
garbeam@2 6
garbeam@2 7 #include <stdarg.h>
garbeam@2 8 #include <stdio.h>
garbeam@2 9 #include <stdlib.h>
garbeam@5 10 #include <sys/wait.h>
garbeam@5 11 #include <unistd.h>
garbeam@5 12
garbeam@84 13 /* static */
garbeam@2 14
garbeam@3 15 static void
garbeam@3 16 bad_malloc(unsigned int size)
garbeam@3 17 {
garbeam@3 18 fprintf(stderr, "fatal: could not malloc() %d bytes\n",
garbeam@3 19 (int) size);
garbeam@92 20 exit(EXIT_FAILURE);
garbeam@3 21 }
garbeam@3 22
garbeam@84 23 /* extern */
garbeam@76 24
garbeam@3 25 void *
garbeam@3 26 emallocz(unsigned int size)
garbeam@3 27 {
garbeam@3 28 void *res = calloc(1, size);
garbeam@3 29 if(!res)
garbeam@3 30 bad_malloc(size);
garbeam@3 31 return res;
garbeam@3 32 }
garbeam@3 33
garbeam@3 34 void
garbeam@76 35 eprint(const char *errstr, ...) {
garbeam@76 36 va_list ap;
garbeam@76 37 va_start(ap, errstr);
garbeam@76 38 vfprintf(stderr, errstr, ap);
garbeam@76 39 va_end(ap);
garbeam@92 40 exit(EXIT_FAILURE);
garbeam@76 41 }
garbeam@76 42
garbeam@76 43 void
garbeam@49 44 spawn(Arg *arg)
garbeam@5 45 {
garbeam@49 46 char **argv = (char **)arg->argv;
garbeam@14 47 if(!argv || !argv[0])
garbeam@5 48 return;
garbeam@5 49 if(fork() == 0) {
garbeam@5 50 if(fork() == 0) {
garbeam@5 51 if(dpy)
garbeam@5 52 close(ConnectionNumber(dpy));
garbeam@9 53 setsid();
garbeam@14 54 execvp(argv[0], argv);
garbeam@34 55 fprintf(stderr, "dwm: execvp %s", argv[0]);
garbeam@5 56 perror(" failed");
garbeam@5 57 }
garbeam@92 58 exit(EXIT_FAILURE);
garbeam@5 59 }
garbeam@5 60 wait(0);
garbeam@5 61 }