1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/* $OpenBSD: xmalloc.c,v 1.10 2015/06/17 20:50:10 nicm Exp $ */
/*
* 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 <err.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "xmalloc.h"
void *
xmalloc(size_t size)
{
void *ptr;
if (size == 0)
errx(1, "xmalloc: zero size");
ptr = malloc(size);
if (ptr == NULL)
errx(1,
"xmalloc: out of memory (allocating %zu bytes)",
size);
return ptr;
}
void *
xcalloc(size_t nmemb, size_t size)
{
void *ptr;
if (size == 0 || nmemb == 0)
errx(1, "xcalloc: zero size");
if (SIZE_MAX / nmemb < size)
errx(1, "xcalloc: nmemb * size > SIZE_MAX");
ptr = calloc(nmemb, size);
if (ptr == NULL)
errx(1, "xcalloc: out of memory (allocating %zu bytes)",
(size * nmemb));
return ptr;
}
void *
xreallocarray(void *ptr, size_t nmemb, size_t size)
{
void *new_ptr;
new_ptr = reallocarray(ptr, nmemb, size);
if (new_ptr == NULL)
errx(1, "xreallocarray: out of memory (new_size %zu bytes)",
nmemb * size);
return new_ptr;
}
char *
xstrdup(const char *str)
{
char *cp;
if ((cp = strdup(str)) == NULL)
err(1, "xstrdup");
return cp;
}
int
xasprintf(char **ret, const char *fmt, ...)
{
va_list ap;
int i;
va_start(ap, fmt);
i = vasprintf(ret, fmt, ap);
va_end(ap);
if (i < 0 || *ret == NULL)
errx(1, "xasprintf: could not allocate memory");
return (i);
}
|
