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/* $OpenPackages$ */
/* $OpenBSD: memory.c,v 1.3 2004/04/07 13:11:36 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "defines.h"
#include "memory.h"
static void enomem(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)
enomem(s1 * s2);
return p;
}
/* 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 (%lu)\n", strerror(errno), (u_long)size);
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);
}
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