dwm-meillo

annotate util.c @ 138:c1185dc7a36e

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some cleanups/fixes inspired by Jukka Salmi's feedback
author arg@10ksloc.org
date Fri, 21 Jul 2006 18:34:10 +0200
parents 61490330e90a
children 21071ae1fe68
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 {
arg@138 18 eprint("fatal: could not malloc() %u bytes\n", size);
garbeam@3 19 }
garbeam@3 20
garbeam@84 21 /* extern */
garbeam@76 22
garbeam@3 23 void *
garbeam@3 24 emallocz(unsigned int size)
garbeam@3 25 {
garbeam@3 26 void *res = calloc(1, size);
arg@123 27
garbeam@3 28 if(!res)
garbeam@3 29 bad_malloc(size);
garbeam@3 30 return res;
garbeam@3 31 }
garbeam@3 32
garbeam@3 33 void
garbeam@76 34 eprint(const char *errstr, ...) {
garbeam@76 35 va_list ap;
arg@123 36
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;
arg@123 47
garbeam@14 48 if(!argv || !argv[0])
garbeam@5 49 return;
garbeam@5 50 if(fork() == 0) {
garbeam@5 51 if(fork() == 0) {
garbeam@5 52 if(dpy)
garbeam@5 53 close(ConnectionNumber(dpy));
garbeam@9 54 setsid();
garbeam@14 55 execvp(argv[0], argv);
garbeam@34 56 fprintf(stderr, "dwm: execvp %s", argv[0]);
garbeam@5 57 perror(" failed");
garbeam@5 58 }
arg@138 59 exit(0);
garbeam@5 60 }
garbeam@5 61 wait(0);
garbeam@5 62 }