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1/* $OpenBSD: xmalloc.c,v 1.10 2019/06/28 05:44:09 deraadt Exp $ */
2/*
3 * Author: Tatu Ylonen <ylo@cs.hut.fi>
4 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * All rights reserved
6 * Versions of malloc and friends that check their results, and never return
7 * failure (they call fatal if they encounter an error).
8 *
9 * As far as I am concerned, the code I have written for this software
10 * can be used freely for any purpose. Any derived versions of this
11 * software must be clearly marked as such, and if the derived work is
12 * incompatible with the protocol description in the RFC file, it must be
13 * called by a name other than "ssh" or "Secure Shell".
14 */
15
16#include <err.h>
17#include <stdarg.h>
18#include <stdint.h>
19#include <stdio.h>
20#include <stdlib.h>
21#include <string.h>
22
23#include "xmalloc.h"
24
25void *
26xmalloc(size_t size)
27{
28 void *ptr;
29
30 if (size == 0)
31 errx(2, "xmalloc: zero size");
32 ptr = malloc(size);
33 if (ptr == NULL)
34 err(2, "xmalloc: allocating %zu bytes", size);
35 return ptr;
36}
37
38void *
39xcalloc(size_t nmemb, size_t size)
40{
41 void *ptr;
42
43 ptr = calloc(nmemb, size);
44 if (ptr == NULL)
45 err(2, "xcalloc: allocating %zu * %zu bytes", nmemb, size);
46 return ptr;
47}
48
49void *
50xreallocarray(void *ptr, size_t nmemb, size_t size)
51{
52 void *new_ptr;
53
54 new_ptr = reallocarray(ptr, nmemb, size);
55 if (new_ptr == NULL)
56 err(2, "xreallocarray: allocating %zu * %zu bytes",
57 nmemb, size);
58 return new_ptr;
59}
60
61char *
62xstrdup(const char *str)
63{
64 char *cp;
65
66 if ((cp = strdup(str)) == NULL)
67 err(2, "xstrdup");
68 return cp;
69}
70
71int
72xasprintf(char **ret, const char *fmt, ...)
73{
74 va_list ap;
75 int i;
76
77 va_start(ap, fmt);
78 i = vasprintf(ret, fmt, ap);
79 va_end(ap);
80
81 if (i == -1)
82 err(2, "xasprintf");
83
84 return i;
85}