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Date:: Sat Feb 26 17:37:09 2022 UTC
Message:: portable: support NetBSD This adds support for NetBSD, using the following external dependencies: libuuid ncursesw There is no CI (yet) as enabling that on Cirrus-CI requires some work, so for now, these builds will be run manually before releases. The test suite will also need tweaking to be fully supported but the key tests are supported for now.
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 1 dd038bc6 2021-09-21 thomas.ad /*	$OpenBSD: recallocarray.c,v 1.1 2017/03/06 18:44:21 otto Exp $	*/
 2 dd038bc6 2021-09-21 thomas.ad /*
 3 dd038bc6 2021-09-21 thomas.ad  * Copyright (c) 2008, 2017 Otto Moerbeek <otto@drijf.net>
 4 dd038bc6 2021-09-21 thomas.ad  *
 5 dd038bc6 2021-09-21 thomas.ad  * Permission to use, copy, modify, and distribute this software for any
 6 dd038bc6 2021-09-21 thomas.ad  * purpose with or without fee is hereby granted, provided that the above
 7 dd038bc6 2021-09-21 thomas.ad  * copyright notice and this permission notice appear in all copies.
 8 dd038bc6 2021-09-21 thomas.ad  *
 9 dd038bc6 2021-09-21 thomas.ad  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 dd038bc6 2021-09-21 thomas.ad  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 dd038bc6 2021-09-21 thomas.ad  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 dd038bc6 2021-09-21 thomas.ad  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 dd038bc6 2021-09-21 thomas.ad  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 dd038bc6 2021-09-21 thomas.ad  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 dd038bc6 2021-09-21 thomas.ad  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 dd038bc6 2021-09-21 thomas.ad  */
17 dd038bc6 2021-09-21 thomas.ad 
18 dd038bc6 2021-09-21 thomas.ad #include <errno.h>
19 dd038bc6 2021-09-21 thomas.ad #include <stdlib.h>
20 dd038bc6 2021-09-21 thomas.ad #include <stdint.h>
21 dd038bc6 2021-09-21 thomas.ad #include <string.h>
22 dd038bc6 2021-09-21 thomas.ad #include <unistd.h>
23 dd038bc6 2021-09-21 thomas.ad 
24 dd038bc6 2021-09-21 thomas.ad /*
25 dd038bc6 2021-09-21 thomas.ad  * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
26 dd038bc6 2021-09-21 thomas.ad  * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
27 dd038bc6 2021-09-21 thomas.ad  */
28 dd038bc6 2021-09-21 thomas.ad #define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4))
29 dd038bc6 2021-09-21 thomas.ad 
30 dd038bc6 2021-09-21 thomas.ad void *
31 dd038bc6 2021-09-21 thomas.ad recallocarray(void *ptr, size_t oldnmemb, size_t newnmemb, size_t size)
32 dd038bc6 2021-09-21 thomas.ad {
33 dd038bc6 2021-09-21 thomas.ad 	size_t oldsize, newsize;
34 dd038bc6 2021-09-21 thomas.ad 	void *newptr;
35 dd038bc6 2021-09-21 thomas.ad 
36 dd038bc6 2021-09-21 thomas.ad 	if (ptr == NULL)
37 dd038bc6 2021-09-21 thomas.ad 		return calloc(newnmemb, size);
38 dd038bc6 2021-09-21 thomas.ad 
39 dd038bc6 2021-09-21 thomas.ad 	if ((newnmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
40 dd038bc6 2021-09-21 thomas.ad 	    newnmemb > 0 && SIZE_MAX / newnmemb < size) {
41 dd038bc6 2021-09-21 thomas.ad 		errno = ENOMEM;
42 dd038bc6 2021-09-21 thomas.ad 		return NULL;
43 dd038bc6 2021-09-21 thomas.ad 	}
44 dd038bc6 2021-09-21 thomas.ad 	newsize = newnmemb * size;
45 dd038bc6 2021-09-21 thomas.ad 
46 dd038bc6 2021-09-21 thomas.ad 	if ((oldnmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
47 dd038bc6 2021-09-21 thomas.ad 	    oldnmemb > 0 && SIZE_MAX / oldnmemb < size) {
48 dd038bc6 2021-09-21 thomas.ad 		errno = EINVAL;
49 dd038bc6 2021-09-21 thomas.ad 		return NULL;
50 dd038bc6 2021-09-21 thomas.ad 	}
51 dd038bc6 2021-09-21 thomas.ad 	oldsize = oldnmemb * size;
52 dd038bc6 2021-09-21 thomas.ad 
53 dd038bc6 2021-09-21 thomas.ad 	/*
54 dd038bc6 2021-09-21 thomas.ad 	 * Don't bother too much if we're shrinking just a bit,
55 dd038bc6 2021-09-21 thomas.ad 	 * we do not shrink for series of small steps, oh well.
56 dd038bc6 2021-09-21 thomas.ad 	 */
57 dd038bc6 2021-09-21 thomas.ad 	if (newsize <= oldsize) {
58 dd038bc6 2021-09-21 thomas.ad 		size_t d = oldsize - newsize;
59 dd038bc6 2021-09-21 thomas.ad 
60 dd038bc6 2021-09-21 thomas.ad 		if (d < oldsize / 2 && d < (size_t)getpagesize()) {
61 dd038bc6 2021-09-21 thomas.ad 			memset((char *)ptr + newsize, 0, d);
62 dd038bc6 2021-09-21 thomas.ad 			return ptr;
63 dd038bc6 2021-09-21 thomas.ad 		}
64 dd038bc6 2021-09-21 thomas.ad 	}
65 dd038bc6 2021-09-21 thomas.ad 
66 dd038bc6 2021-09-21 thomas.ad 	newptr = malloc(newsize);
67 dd038bc6 2021-09-21 thomas.ad 	if (newptr == NULL)
68 dd038bc6 2021-09-21 thomas.ad 		return NULL;
69 dd038bc6 2021-09-21 thomas.ad 
70 dd038bc6 2021-09-21 thomas.ad 	if (newsize > oldsize) {
71 dd038bc6 2021-09-21 thomas.ad 		memcpy(newptr, ptr, oldsize);
72 dd038bc6 2021-09-21 thomas.ad 		memset((char *)newptr + oldsize, 0, newsize - oldsize);
73 dd038bc6 2021-09-21 thomas.ad 	} else
74 dd038bc6 2021-09-21 thomas.ad 		memcpy(newptr, ptr, newsize);
75 dd038bc6 2021-09-21 thomas.ad 
76 d24ddaa6 2022-02-26 thomas #ifdef __APPLE__
77 d24ddaa6 2022-02-26 thomas 	memset_s(ptr, oldsize, 0, oldsize);
78 a3732bb6 2022-02-26 thomas #elif defined(__NetBSD__)
79 a3732bb6 2022-02-26 thomas 	explicit_memset(ptr, oldsize, 0);
80 d24ddaa6 2022-02-26 thomas #else
81 dd038bc6 2021-09-21 thomas.ad 	explicit_bzero(ptr, oldsize);
82 d24ddaa6 2022-02-26 thomas #endif
83 dd038bc6 2021-09-21 thomas.ad 	free(ptr);
84 dd038bc6 2021-09-21 thomas.ad 
85 dd038bc6 2021-09-21 thomas.ad 	return newptr;
86 dd038bc6 2021-09-21 thomas.ad }