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/*
* 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 <sys/types.h>
#include <stdlib.h>
#include <err.h>
#include <string.h>
#include "config.h"
void *
xmalloc(size_t size)
{
void *ptr;
if (size == 0)
err(1,"xmalloc: zero size");
ptr = malloc(size);
if (ptr == NULL)
err(1,"xmalloc: out of memory (allocating %lu bytes)", (u_long) size);
return ptr;
}
void *
xrealloc(void *ptr, size_t new_size)
{
void *new_ptr;
if (new_size == 0)
err(1,"xrealloc: zero size");
if (ptr == NULL)
err(1,"xrealloc: NULL pointer given as argument");
new_ptr = realloc(ptr, new_size);
if (new_ptr == NULL)
err(1,"xrealloc: out of memory (new_size %lu bytes)", (u_long) new_size);
return new_ptr;
}
void
xfree(void *ptr)
{
if (ptr == NULL)
err(1,"xfree: NULL pointer given as argument");
free(ptr);
}
char *
xstrdup(const char *str)
{
size_t len = strlen(str) + 1;
char *cp;
if (len == 0)
err(1,"xstrdup: zero size");
cp = xmalloc(len);
strlcpy(cp, str, len);
return cp;
}
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