/*	$OpenBSD: util.c,v 1.4 2014/10/15 21:37:27 deraadt Exp $	*/

/*
 * Copyright (c) 2012 Mark Kettenis
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <err.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "util.h"

int debug;

void *
xmalloc(size_t size)
{
	void *p;

	p = malloc(size);
	if (p == NULL)
		err(1, NULL);
	return p;
}

void *
xzalloc(size_t size)
{
	void *p;

	p = xmalloc(size);
	memset(p, 0, size);
	return p;
}

void *
xreallocarray(void *o, size_t nmemb, size_t size)
{
	void *p;

	p = reallocarray(o, nmemb, size);
	if (p == NULL)
		err(1, NULL);
	return p;
}

char *
xstrdup(const char *s)
{
	char *p;

	p = strdup(s);
	if (p == NULL)
		err(1, NULL);
	return p;
}

int
xasprintf(char **str, const char *fmt, ...)
{
	va_list ap;
	int ret;

	va_start(ap, fmt);
	ret = vasprintf(str, fmt, ap);
	va_end(ap);
	if (ret == -1)
		err(1, NULL);
	return ret;
}