/* $OpenBSD: xmalloc.c,v 1.4 2019/06/28 05:44:09 deraadt Exp $ */

/*

* Author: Tatu Ylonen <ylo@cs.hut.fi>

* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland

* All rights reserved

* Versions of malloc and friends that check their results, and never return

* failure (they call fatal if they encounter an error).

*

* As far as I am concerned, the code I have written for this software

* can be used freely for any purpose. Any derived versions of this

* software must be clearly marked as such, and if the derived work is

* incompatible with the protocol description in the RFC file, it must be

* called by a name other than "ssh" or "Secure Shell".

*/

#include <stdarg.h>

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <syslog.h>

#include "log.h"

#include "xmalloc.h"

void *

xmalloc(size_t size)

{

void *ptr;

if (size == 0)

fatal("xmalloc: zero size");

ptr = malloc(size);

if (ptr == NULL)

fatal("xmalloc: allocating %zu bytes", size);

return ptr;

}

void *

xcalloc(size_t nmemb, size_t size)

{

void *ptr;

if (size == 0 || nmemb == 0)

fatal("xcalloc: zero size");

ptr = calloc(nmemb, size);

if (ptr == NULL)

fatal("xcalloc: allocating %zu * %zu bytes", nmemb, size);

return ptr;

}

void *

xreallocarray(void *ptr, size_t nmemb, size_t size)

{

void *new_ptr;

new_ptr = reallocarray(ptr, nmemb, size);

if (new_ptr == NULL)

fatal("xreallocarray: allocating %zu * %zu bytes",

nmemb, size);

return new_ptr;

}

void *

xrecallocarray(void *ptr, size_t oldnmemb, size_t nmemb, size_t size)

{

void *new_ptr;

new_ptr = recallocarray(ptr, oldnmemb, nmemb, size);

if (new_ptr == NULL)

fatal("xrecallocarray: allocating %zu * %zu bytes",

nmemb, size);

return new_ptr;

}

char *

xstrdup(const char *str)

{

char *cp;

if ((cp = strdup(str)) == NULL)

fatal("xstrdup");

return cp;

}

int

xasprintf(char **ret, const char *fmt, ...)

{

va_list ap;

int i;

va_start(ap, fmt);

i = vasprintf(ret, fmt, ap);

va_end(ap);

if (i == -1)

fatal("xasprintf");

return i;

}