xmalloc.c revision 65668 
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"
16RCSID("$OpenBSD: xmalloc.c,v 1.8 2000/09/07 20:27:55 deraadt Exp $");
17
18#include "ssh.h"
19
20void *
21xmalloc(size_t size)
22{
23	void *ptr = malloc(size);
24	if (ptr == NULL)
25		fatal("xmalloc: out of memory (allocating %d bytes)", (int) size);
26	return ptr;
27}
28
29void *
30xrealloc(void *ptr, size_t new_size)
31{
32	void *new_ptr;
33
34	if (ptr == NULL)
35		fatal("xrealloc: NULL pointer given as argument");
36	new_ptr = realloc(ptr, new_size);
37	if (new_ptr == NULL)
38		fatal("xrealloc: out of memory (new_size %d bytes)", (int) new_size);
39	return new_ptr;
40}
41
42void
43xfree(void *ptr)
44{
45	if (ptr == NULL)
46		fatal("xfree: NULL pointer given as argument");
47	free(ptr);
48}
49
50char *
51xstrdup(const char *str)
52{
53	int len = strlen(str) + 1;
54
55	char *cp = xmalloc(len);
56	strlcpy(cp, str, len);
57	return cp;
58}
59