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annotate util.c @ 226:adbfcac63cdc

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author Anselm R.Garbe <arg@10ksloc.org>
date Tue, 08 Aug 2006 12:47:45 +0200
parents 523df4a3c1c4
children dacd3f3c5823
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 #include <stdarg.h>
garbeam@2 7 #include <stdio.h>
garbeam@2 8 #include <stdlib.h>
garbeam@5 9 #include <sys/wait.h>
garbeam@5 10 #include <unistd.h>
garbeam@5 11
garbeam@84 12 /* static */
garbeam@2 13
garbeam@3 14 static void
garbeam@3 15 bad_malloc(unsigned int size)
garbeam@3 16 {
arg@138 17 eprint("fatal: could not malloc() %u bytes\n", size);
garbeam@3 18 }
garbeam@3 19
garbeam@84 20 /* extern */
garbeam@76 21
garbeam@3 22 void *
garbeam@3 23 emallocz(unsigned int size)
garbeam@3 24 {
garbeam@3 25 void *res = calloc(1, size);
arg@123 26
garbeam@3 27 if(!res)
garbeam@3 28 bad_malloc(size);
garbeam@3 29 return res;
garbeam@3 30 }
garbeam@3 31
garbeam@3 32 void
arg@187 33 eprint(const char *errstr, ...)
arg@187 34 {
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 {
arg@189 46 static char *shell = NULL;
arg@123 47
arg@189 48 if(!shell && !(shell = getenv("SHELL")))
arg@189 49 shell = "/bin/sh";
arg@189 50
arg@189 51 if(!arg->cmd)
garbeam@5 52 return;
garbeam@5 53 if(fork() == 0) {
garbeam@5 54 if(fork() == 0) {
garbeam@5 55 if(dpy)
garbeam@5 56 close(ConnectionNumber(dpy));
garbeam@9 57 setsid();
arg@189 58 execl(shell, shell, "-c", arg->cmd, NULL);
arg@217 59 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
garbeam@5 60 perror(" failed");
garbeam@5 61 }
arg@138 62 exit(0);
garbeam@5 63 }
garbeam@5 64 wait(0);
garbeam@5 65 }