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remove TIMESTAMP abstraction layer, prodded by theo.
while there, clean up includes.
use strtoll for ar timestamps (pretty much unused in reality, more
standard conforming than anything)

use idea from Todd to adapt to time_t being 32 bits OR 64 bits
(pedantically correct: INT_MIN would work just fine up to 1910 or so...)

okay millert@, gone thru a make build.

/* $OpenBSD: memory.c,v 1.9 2013/04/23 14:32:53 espie Exp $ */

/*
 * Copyright (c) 1988, 1989, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1989 by Berkeley Softworks
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Adam de Boor.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ohash.h>
#include "defines.h"
#include "memory.h"

static void enomem(size_t);
static void enocmem(size_t, size_t);

/*
 * emalloc --
 *	malloc, but die on error.
 */
void *
emalloc(size_t size)
{
	void *p;

	if ((p = malloc(size)) == NULL)
		enomem(size);
	return p;
}

/*
 * estrdup --
 *	strdup, but die on error.
 */
char *
estrdup(const char *str)
{
	char *p;
	size_t size;

	size = strlen(str) + 1;

	p = emalloc(size);
	memcpy(p, str, size);
	return p;
}

/*
 * erealloc --
 *	realloc, but die on error.
 */
void *
erealloc(void *ptr, size_t size)
{
	if ((ptr = realloc(ptr, size)) == NULL)
		enomem(size);
	return ptr;
}

void *
ecalloc(size_t s1, size_t s2)
{
	void *p;

	if ((p = calloc(s1, s2)) == NULL)
		enocmem(s1, s2);
	return p;
}

void *
emult_realloc(void *ptr, size_t s1, size_t s2)
{
	size_t size;

	if (s1 && SIZE_MAX / s1 < s2) {
		errno = ENOMEM;
		enocmem(s1, s2);
	}
	size = s1 * s2;
	if ((ptr = realloc(ptr, size)) == NULL)
		enocmem(s1, s2);
	return ptr;
}

/* Support routines for hash tables.  */
void *
hash_alloc(size_t s, void *u UNUSED)
{
	return ecalloc(s, 1);
}

void
hash_free(void *p, size_t s UNUSED, void *u UNUSED)
{
	free(p);
}

void *
element_alloc(size_t s, void *u UNUSED)
{
	return emalloc(s);
}



/*
 * enomem --
 *	die when out of memory.
 */
void
enomem(size_t size)
{
	fprintf(stderr, "make: %s (%zu)\n", strerror(errno), size);
	exit(2);
}

void
enocmem(size_t sz1, size_t sz2)
{
	fprintf(stderr, "make: %s (%zu * %zu)\n", strerror(errno), sz1, sz2);
	exit(2);
}
/*
 * esetenv --
 *	change environment, die on error.
 */
void
esetenv(const char *name, const char *value)
{
	if (setenv(name, value, 1) == 0)
	    return;

	fprintf(stderr, "make: setenv failed (%s)\n", strerror(errno));
	exit(2);
}


/*
 * enunlink --
 *	Remove a file carefully, avoiding directories.
 */
int
eunlink(const char *file)
{
	struct stat st;

	if (lstat(file, &st) == -1)
		return -1;

	if (S_ISDIR(st.st_mode)) {
		errno = EISDIR;
		return -1;
	}
	return unlink(file);
}

void
free_hash(struct ohash *h)
{
	void *e;
	unsigned int i;

	for (e = ohash_first(h, &i); e != NULL; e = ohash_next(h, &i))
		free(e);
	ohash_delete(h);
}