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Commit	Line	Data
	1	/*
	2	* Author: Tatu Ylonen <ylo@cs.hut.fi>
	3	* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
	4	* All rights reserved
	5	* Versions of malloc and friends that check their results, and never return
	6	* failure (they call fatal if they encounter an error).
	7	*
	8	* As far as I am concerned, the code I have written for this software
	9	* can be used freely for any purpose. Any derived versions of this
	10	* software must be clearly marked as such, and if the derived work is
	11	* incompatible with the protocol description in the RFC file, it must be
	12	* called by a name other than "ssh" or "Secure Shell".
	13	*/
	14
	15	#include "includes.h"
	16	RCSID("$OpenBSD: xmalloc.c,v 1.14 2001/02/07 18:04:50 itojun Exp $");
	17
	18	#include "xmalloc.h"
	19	#include "log.h"
	20
	21	void *
	22	xmalloc(size_t size)
	23	{
	24	void *ptr;
	25
	26	if (size == 0)
	27	fatal("xmalloc: zero size");
	28	ptr = malloc(size);
	29	if (ptr == NULL)
	30	fatal("xmalloc: out of memory (allocating %lu bytes)", (u_long) size);
	31	return ptr;
	32	}
	33
	34	void *
	35	xrealloc(void *ptr, size_t new_size)
	36	{
	37	void *new_ptr;
	38
	39	if (new_size == 0)
	40	fatal("xrealloc: zero size");
	41	if (ptr == NULL)
	42	fatal("xrealloc: NULL pointer given as argument");
	43	new_ptr = realloc(ptr, new_size);
	44	if (new_ptr == NULL)
	45	fatal("xrealloc: out of memory (new_size %lu bytes)", (u_long) new_size);
	46	return new_ptr;
	47	}
	48
	49	void
	50	xfree(void *ptr)
	51	{
	52	if (ptr == NULL)
	53	fatal("xfree: NULL pointer given as argument");
	54	free(ptr);
	55	}
	56
	57	char *
	58	xstrdup(const char *str)
	59	{
	60	size_t len = strlen(str) + 1;
	61	char *cp;
	62
	63	if (len == 0)
	64	fatal("xstrdup: zero size");
	65	cp = xmalloc(len);
	66	strlcpy(cp, str, len);
	67	return cp;
	68	}