Annotation of src/crypto/external/bsd/openssh/dist/xmalloc.c, Revision 1.1.1.8
1.1.1.8 ! christos 1: /* $OpenBSD: xmalloc.c,v 1.34 2017/05/31 09:15:42 deraadt Exp $ */
1.1 christos 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 <stdarg.h>
1.1.1.5 christos 17: #include <stdint.h>
1.1 christos 18: #include <stdio.h>
19: #include <stdlib.h>
20: #include <string.h>
21:
22: #include "xmalloc.h"
23: #include "log.h"
24:
1.1.1.7 christos 25: void
26: ssh_malloc_init(void)
27: {
28: extern char *malloc_options;
29:
30: malloc_options = "S";
31: }
32:
1.1 christos 33: void *
34: xmalloc(size_t size)
35: {
36: void *ptr;
37:
38: if (size == 0)
39: fatal("xmalloc: zero size");
40: ptr = malloc(size);
41: if (ptr == NULL)
1.1.1.4 christos 42: fatal("xmalloc: out of memory (allocating %zu bytes)", size);
1.1 christos 43: return ptr;
44: }
45:
46: void *
47: xcalloc(size_t nmemb, size_t size)
48: {
49: void *ptr;
50:
51: if (size == 0 || nmemb == 0)
52: fatal("xcalloc: zero size");
1.1.1.5 christos 53: if (SIZE_MAX / nmemb < size)
54: fatal("xcalloc: nmemb * size > SIZE_MAX");
1.1 christos 55: ptr = calloc(nmemb, size);
56: if (ptr == NULL)
1.1.1.4 christos 57: fatal("xcalloc: out of memory (allocating %zu bytes)",
58: size * nmemb);
1.1 christos 59: return ptr;
60: }
61:
62: void *
1.1.1.6 christos 63: xreallocarray(void *ptr, size_t nmemb, size_t size)
1.1 christos 64: {
65: void *new_ptr;
66:
1.1.1.6 christos 67: new_ptr = reallocarray(ptr, nmemb, size);
1.1 christos 68: if (new_ptr == NULL)
1.1.1.6 christos 69: fatal("xreallocarray: out of memory (%zu elements of %zu bytes)",
70: nmemb, size);
1.1 christos 71: return new_ptr;
72: }
73:
1.1.1.8 ! christos 74: void *
! 75: xrecallocarray(void *ptr, size_t onmemb, size_t nmemb, size_t size)
! 76: {
! 77: void *new_ptr;
! 78:
! 79: new_ptr = recallocarray(ptr, onmemb, nmemb, size);
! 80: if (new_ptr == NULL)
! 81: fatal("xrecallocarray: out of memory (%zu elements of %zu bytes)",
! 82: nmemb, size);
! 83: return new_ptr;
! 84: }
! 85:
1.1 christos 86: char *
87: xstrdup(const char *str)
88: {
89: size_t len;
90: char *cp;
91:
92: len = strlen(str) + 1;
93: cp = xmalloc(len);
94: strlcpy(cp, str, len);
95: return cp;
96: }
97:
98: int
99: xasprintf(char **ret, const char *fmt, ...)
100: {
101: va_list ap;
102: int i;
103:
104: va_start(ap, fmt);
105: i = vasprintf(ret, fmt, ap);
106: va_end(ap);
107:
108: if (i < 0 || *ret == NULL)
109: fatal("xasprintf: could not allocate memory");
110:
111: return (i);
112: }
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