util.c
author arg@10ksloc.org
Fri, 21 Jul 2006 21:15:08 +0200
changeset 139 22213b9a2114
parent 138 c1185dc7a36e
child 164 21071ae1fe68
permissions -rw-r--r--
prepared 0.5
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/*
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 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
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 * See LICENSE file for license details.
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 */
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#include "dwm.h"
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/wait.h>
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#include <unistd.h>
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/* static */
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static void
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bad_malloc(unsigned int size)
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{
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	eprint("fatal: could not malloc() %u bytes\n", size);
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}
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/* extern */
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void *
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emallocz(unsigned int size)
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{
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	void *res = calloc(1, size);
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	if(!res)
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		bad_malloc(size);
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	return res;
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}
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void
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eprint(const char *errstr, ...) {
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	va_list ap;
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	va_start(ap, errstr);
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	vfprintf(stderr, errstr, ap);
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	va_end(ap);
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	exit(EXIT_FAILURE);
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}
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void
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spawn(Arg *arg)
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{
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	char **argv = (char **)arg->argv;
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	if(!argv || !argv[0])
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		return;
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	if(fork() == 0) {
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		if(fork() == 0) {
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			if(dpy)
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				close(ConnectionNumber(dpy));
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			setsid();
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			execvp(argv[0], argv);
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			fprintf(stderr, "dwm: execvp %s", argv[0]);
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			perror(" failed");
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		}
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		exit(0);
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	}
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	wait(0);
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}