aewl

annotate util.c @ 541:08d3d329270a

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using MASTER 600 again, it is definately better, and using urxvtc for the moment (it doesn't flickers on refreshes, but this is not because of Marc Lehmann, it is because of the original rxvt code)
author arg@mig29
date Thu, 26 Oct 2006 12:13:41 +0200
parents 740c4bfc3124
children e90bf387bf6f
rev   line source
arg@532 1 /* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
garbeam@2 2 * See LICENSE file for license details.
garbeam@2 3 */
garbeam@76 4 #include "dwm.h"
garbeam@2 5 #include <stdarg.h>
garbeam@2 6 #include <stdio.h>
garbeam@2 7 #include <stdlib.h>
garbeam@5 8 #include <sys/wait.h>
garbeam@5 9 #include <unistd.h>
garbeam@5 10
garbeam@84 11 /* extern */
garbeam@76 12
garbeam@3 13 void *
arg@461 14 emallocz(unsigned int size) {
garbeam@3 15 void *res = calloc(1, size);
arg@123 16
garbeam@3 17 if(!res)
arg@325 18 eprint("fatal: could not malloc() %u bytes\n", size);
garbeam@3 19 return res;
garbeam@3 20 }
garbeam@3 21
garbeam@3 22 void
arg@461 23 eprint(const char *errstr, ...) {
garbeam@76 24 va_list ap;
arg@123 25
garbeam@76 26 va_start(ap, errstr);
garbeam@76 27 vfprintf(stderr, errstr, ap);
garbeam@76 28 va_end(ap);
garbeam@92 29 exit(EXIT_FAILURE);
garbeam@76 30 }
garbeam@76 31
arg@270 32 void *
arg@461 33 erealloc(void *ptr, unsigned int size) {
arg@270 34 void *res = realloc(ptr, size);
arg@532 35
arg@270 36 if(!res)
arg@325 37 eprint("fatal: could not malloc() %u bytes\n", size);
arg@270 38 return res;
arg@270 39 }
arg@270 40
garbeam@76 41 void
arg@461 42 spawn(Arg *arg) {
arg@189 43 static char *shell = NULL;
arg@123 44
arg@189 45 if(!shell && !(shell = getenv("SHELL")))
arg@189 46 shell = "/bin/sh";
arg@189 47 if(!arg->cmd)
garbeam@5 48 return;
arg@471 49 /* The double-fork construct avoids zombie processes and keeps the code
arg@471 50 * clean from stupid signal handlers. */
garbeam@5 51 if(fork() == 0) {
garbeam@5 52 if(fork() == 0) {
garbeam@5 53 if(dpy)
garbeam@5 54 close(ConnectionNumber(dpy));
garbeam@9 55 setsid();
arg@338 56 execl(shell, shell, "-c", arg->cmd, (char *)NULL);
arg@217 57 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
garbeam@5 58 perror(" failed");
garbeam@5 59 }
arg@138 60 exit(0);
garbeam@5 61 }
garbeam@5 62 wait(0);
garbeam@5 63 }