OpenCoverage

xmalloc.c

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1/* $OpenBSD: xmalloc.c,v 1.34 2017/05/31 09:15:42 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 "includes.h"-
17-
18#include <stdarg.h>-
19#ifdef HAVE_STDINT_H-
20#include <stdint.h>-
21#endif-
22#include <stdio.h>-
23#include <stdlib.h>-
24#include <string.h>-
25-
26#include "xmalloc.h"-
27#include "log.h"-
28-
29void-
30ssh_malloc_init(void)-
31{-
32#if defined(__OpenBSD__)-
33 extern char *malloc_options;-
34-
35 malloc_options = "S";-
36#endif /* __OpenBSD__ */-
37}-
38-
39void *-
40xmalloc(size_t size)-
41{-
42 void *ptr;-
43-
44 if (size == 0)
size == 0Description
TRUEnever evaluated
FALSEevaluated 7981 times by 4 tests
Evaluated by:
  • ssh-keygen
  • sshd
  • test_hostkeys
  • test_kex
0-7981
45 fatal("xmalloc: zero size");
never executed: fatal("xmalloc: zero size");
0
46 ptr = malloc(size);-
47 if (ptr == NULL)
ptr == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 7981 times by 4 tests
Evaluated by:
  • ssh-keygen
  • sshd
  • test_hostkeys
  • test_kex
0-7981
48 fatal("xmalloc: out of memory (allocating %zu bytes)", size);
never executed: fatal("xmalloc: out of memory (allocating %zu bytes)", size);
0
49 return ptr;
executed 7981 times by 4 tests: return ptr;
Executed by:
  • ssh-keygen
  • sshd
  • test_hostkeys
  • test_kex
7981
50}-
51-
52void *-
53xcalloc(size_t nmemb, size_t size)-
54{-
55 void *ptr;-
56-
57 if (size == 0 || nmemb == 0)
size == 0Description
TRUEnever evaluated
FALSEevaluated 10 times by 1 test
Evaluated by:
  • sshd
nmemb == 0Description
TRUEnever evaluated
FALSEevaluated 10 times by 1 test
Evaluated by:
  • sshd
0-10
58 fatal("xcalloc: zero size");
never executed: fatal("xcalloc: zero size");
0
59 if (SIZE_MAX / nmemb < size)
(1844674407370.../ nmemb < sizeDescription
TRUEnever evaluated
FALSEevaluated 10 times by 1 test
Evaluated by:
  • sshd
0-10
60 fatal("xcalloc: nmemb * size > SIZE_MAX");
never executed: fatal("xcalloc: nmemb * size > SIZE_MAX");
0
61 ptr = calloc(nmemb, size);-
62 if (ptr == NULL)
ptr == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 10 times by 1 test
Evaluated by:
  • sshd
0-10
63 fatal("xcalloc: out of memory (allocating %zu bytes)",
never executed: fatal("xcalloc: out of memory (allocating %zu bytes)", size * nmemb);
0
64 size * nmemb);
never executed: fatal("xcalloc: out of memory (allocating %zu bytes)", size * nmemb);
0
65 return ptr;
executed 10 times by 1 test: return ptr;
Executed by:
  • sshd
10
66}-
67-
68void *-
69xreallocarray(void *ptr, size_t nmemb, size_t size)-
70{-
71 void *new_ptr;-
72-
73 new_ptr = reallocarray(ptr, nmemb, size);-
74 if (new_ptr == NULL)
new_ptr == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • ssh-keygen
0-1
75 fatal("xreallocarray: out of memory (%zu elements of %zu bytes)",
never executed: fatal("xreallocarray: out of memory (%zu elements of %zu bytes)", nmemb, size);
0
76 nmemb, size);
never executed: fatal("xreallocarray: out of memory (%zu elements of %zu bytes)", nmemb, size);
0
77 return new_ptr;
executed 1 time by 1 test: return new_ptr;
Executed by:
  • ssh-keygen
1
78}-
79-
80void *-
81xrecallocarray(void *ptr, size_t onmemb, size_t nmemb, size_t size)-
82{-
83 void *new_ptr;-
84-
85 new_ptr = recallocarray(ptr, onmemb, nmemb, size);-
86 if (new_ptr == NULL)
new_ptr == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 14 times by 1 test
Evaluated by:
  • sshd
0-14
87 fatal("xrecallocarray: out of memory (%zu elements of %zu bytes)",
never executed: fatal("xrecallocarray: out of memory (%zu elements of %zu bytes)", nmemb, size);
0
88 nmemb, size);
never executed: fatal("xrecallocarray: out of memory (%zu elements of %zu bytes)", nmemb, size);
0
89 return new_ptr;
executed 14 times by 1 test: return new_ptr;
Executed by:
  • sshd
14
90}-
91-
92char *-
93xstrdup(const char *str)-
94{-
95 size_t len;-
96 char *cp;-
97-
98 len = strlen(str) + 1;-
99 cp = xmalloc(len);-
100 strlcpy(cp, str, len);-
101 return cp;
executed 7563 times by 4 tests: return cp;
Executed by:
  • ssh-keygen
  • sshd
  • test_hostkeys
  • test_kex
7563
102}-
103-
104int-
105xasprintf(char **ret, const char *fmt, ...)-
106{-
107 va_list ap;-
108 int i;-
109-
110 va_start(ap, fmt);-
111 i = vasprintf(ret, fmt, ap);-
112 va_end(ap);-
113-
114 if (i < 0 || *ret == NULL)
i < 0Description
TRUEnever evaluated
FALSEnever evaluated
*ret == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
115 fatal("xasprintf: could not allocate memory");
never executed: fatal("xasprintf: could not allocate memory");
0
116-
117 return (i);
never executed: return (i);
0
118}-
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