1*192095f7Smpi /* $OpenBSD: xmalloc.c,v 1.1 2017/08/11 14:21:24 mpi Exp $ */
2*192095f7Smpi
3*192095f7Smpi /*
4*192095f7Smpi * Author: Tatu Ylonen <ylo@cs.hut.fi>
5*192095f7Smpi * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
6*192095f7Smpi * All rights reserved
7*192095f7Smpi * Versions of malloc and friends that check their results, and never return
8*192095f7Smpi * failure (they call fatalx if they encounter an error).
9*192095f7Smpi *
10*192095f7Smpi * As far as I am concerned, the code I have written for this software
11*192095f7Smpi * can be used freely for any purpose. Any derived versions of this
12*192095f7Smpi * software must be clearly marked as such, and if the derived work is
13*192095f7Smpi * incompatible with the protocol description in the RFC file, it must be
14*192095f7Smpi * called by a name other than "ssh" or "Secure Shell".
15*192095f7Smpi */
16*192095f7Smpi
17*192095f7Smpi #include <err.h>
18*192095f7Smpi #include <limits.h>
19*192095f7Smpi #include <stdarg.h>
20*192095f7Smpi #include <stdint.h>
21*192095f7Smpi #include <stdio.h>
22*192095f7Smpi #include <stdlib.h>
23*192095f7Smpi #include <string.h>
24*192095f7Smpi
25*192095f7Smpi #include "xmalloc.h"
26*192095f7Smpi
27*192095f7Smpi void *
xmalloc(size_t size)28*192095f7Smpi xmalloc(size_t size)
29*192095f7Smpi {
30*192095f7Smpi void *ptr;
31*192095f7Smpi
32*192095f7Smpi if (size == 0)
33*192095f7Smpi errx(1, "xmalloc: zero size");
34*192095f7Smpi ptr = malloc(size);
35*192095f7Smpi if (ptr == NULL)
36*192095f7Smpi err(1, "xmalloc: allocating %zu bytes", size);
37*192095f7Smpi return ptr;
38*192095f7Smpi }
39*192095f7Smpi
40*192095f7Smpi void *
xcalloc(size_t nmemb,size_t size)41*192095f7Smpi xcalloc(size_t nmemb, size_t size)
42*192095f7Smpi {
43*192095f7Smpi void *ptr;
44*192095f7Smpi
45*192095f7Smpi if (size == 0 || nmemb == 0)
46*192095f7Smpi errx(1, "xcalloc: zero size");
47*192095f7Smpi ptr = calloc(nmemb, size);
48*192095f7Smpi if (ptr == NULL)
49*192095f7Smpi err(1, "xcalloc: allocating %zu * %zu bytes",
50*192095f7Smpi nmemb, size);
51*192095f7Smpi return ptr;
52*192095f7Smpi }
53*192095f7Smpi
54*192095f7Smpi void *
xrealloc(void * ptr,size_t size)55*192095f7Smpi xrealloc(void *ptr, size_t size)
56*192095f7Smpi {
57*192095f7Smpi return xreallocarray(ptr, 1, size);
58*192095f7Smpi }
59*192095f7Smpi
60*192095f7Smpi void *
xreallocarray(void * ptr,size_t nmemb,size_t size)61*192095f7Smpi xreallocarray(void *ptr, size_t nmemb, size_t size)
62*192095f7Smpi {
63*192095f7Smpi void *new_ptr;
64*192095f7Smpi
65*192095f7Smpi if (nmemb == 0 || size == 0)
66*192095f7Smpi errx(1, "xreallocarray: zero size");
67*192095f7Smpi new_ptr = reallocarray(ptr, nmemb, size);
68*192095f7Smpi if (new_ptr == NULL)
69*192095f7Smpi err(1, "xreallocarray: allocating %zu * %zu bytes",
70*192095f7Smpi nmemb, size);
71*192095f7Smpi return new_ptr;
72*192095f7Smpi }
73*192095f7Smpi
74*192095f7Smpi char *
xstrdup(const char * str)75*192095f7Smpi xstrdup(const char *str)
76*192095f7Smpi {
77*192095f7Smpi char *cp;
78*192095f7Smpi
79*192095f7Smpi if ((cp = strdup(str)) == NULL)
80*192095f7Smpi err(1, "xstrdup");
81*192095f7Smpi return cp;
82*192095f7Smpi }
83