Return to xmalloc.c CVS log

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switch to xmalloc stuff, me and xsa@ agreed on this a long
time ago, but we were being held back by jfb. too bad for him.

next step is to use fatal() through out the code for unrecoverable
errors instead of trying to be all nice and fluffy and reach main() again.

ok niallo@ and xsa@

/*
 * Author: Tatu Ylonen <ylo@cs.hut.fi>
 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
 *                    All rights reserved
 * Versions of xmalloc 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 <stdlib.h>
#include <string.h>

#include "cvs.h"

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

	if (size == 0)
		fatal("xmalloc: zero size");
	ptr = malloc(size);
	if (ptr == NULL)
		fatal("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)
		fatal("xrealloc: zero size");
	if (ptr == NULL)
		new_ptr = xmalloc(new_size);
	else
		new_ptr = realloc(ptr, new_size);
	if (new_ptr == NULL)
		fatal("xrealloc: out of memory (new_size %lu bytes)", (u_long) new_size);
	return new_ptr;
}

void
xfree(void *ptr)
{
	if (ptr == NULL)
		fatal("xfree: NULL pointer given as argument");
	free(ptr);
}

char *
xstrdup(const char *str)
{
	size_t len;
	char *cp;

	len = strlen(str) + 1;
	cp = xmalloc(len);
	strlcpy(cp, str, len);
	return cp;
}