1 /* $OpenBSD: xmalloc.c,v 1.37 2022/03/13 23:27:54 cheloha Exp $ */
3 * Author: Tatu Ylonen <ylo@cs.hut.fi>
4 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
6 * Versions of malloc and friends that check their results, and never return
7 * failure (they call fatal if they encounter an error).
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".
29 #if defined(__OpenBSD__)
30 char *malloc_options = "S";
31 #endif /* __OpenBSD__ */
39 fatal("xmalloc: zero size");
42 fatal("xmalloc: out of memory (allocating %zu bytes)", size);
47 xcalloc(size_t nmemb, size_t size)
51 if (size == 0 || nmemb == 0)
52 fatal("xcalloc: zero size");
53 if (SIZE_MAX / nmemb < size)
54 fatal("xcalloc: nmemb * size > SIZE_MAX");
55 ptr = calloc(nmemb, size);
57 fatal("xcalloc: out of memory (allocating %zu bytes)",
63 xreallocarray(void *ptr, size_t nmemb, size_t size)
67 new_ptr = reallocarray(ptr, nmemb, size);
69 fatal("xreallocarray: out of memory (%zu elements of %zu bytes)",
75 xrecallocarray(void *ptr, size_t onmemb, size_t nmemb, size_t size)
79 new_ptr = recallocarray(ptr, onmemb, nmemb, size);
81 fatal("xrecallocarray: out of memory (%zu elements of %zu bytes)",
87 xstrdup(const char *str)
92 len = strlen(str) + 1;
94 return memcpy(cp, str, len);
98 xvasprintf(char **ret, const char *fmt, va_list ap)
102 i = vasprintf(ret, fmt, ap);
103 if (i < 0 || *ret == NULL)
104 fatal("xvasprintf: could not allocate memory");
109 xasprintf(char **ret, const char *fmt, ...)
115 i = xvasprintf(ret, fmt, ap);