diff options
| author | christos <christos@NetBSD.org> | 2015-02-17 20:44:42 +0000 |
|---|---|---|
| committer | christos <christos@NetBSD.org> | 2015-02-17 20:44:42 +0000 |
| commit | 16b31207541b4defe2c5783c8c1fba6d76cfece7 (patch) | |
| tree | e8321e3c5b8c4e3572158ef86dcfb27b6494f79b /lib/libc/stdlib/reallocarray.c | |
| parent | 221068db214e2f8a9f6ea62c1c2795446844ffb2 (diff) | |
use reallocarr()
Diffstat (limited to 'lib/libc/stdlib/reallocarray.c')
| -rw-r--r-- | lib/libc/stdlib/reallocarray.c | 62 |
1 files changed, 34 insertions, 28 deletions
diff --git a/lib/libc/stdlib/reallocarray.c b/lib/libc/stdlib/reallocarray.c index 9be4e83ff34..7cf710421a1 100644 --- a/lib/libc/stdlib/reallocarray.c +++ b/lib/libc/stdlib/reallocarray.c @@ -1,42 +1,48 @@ /* $OpenBSD: reallocarray.c,v 1.1 2014/05/08 21:43:49 deraadt Exp $ */ -/* - * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net> + +/*- + * Copyright (c) 2015 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Christos Zoulas. * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. */ #define _OPENBSD_SOURCE #include <sys/cdefs.h> -__RCSID("$NetBSD: reallocarray.c,v 1.2 2015/02/17 20:33:40 joerg Exp $"); +__RCSID("$NetBSD: reallocarray.c,v 1.3 2015/02/17 20:44:42 christos Exp $"); -#include <sys/param.h> -#include <sys/types.h> +#define _OPENBSD_SOURCE #include <errno.h> -#include <stdint.h> #include <stdlib.h> -/* - * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX - * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW - */ -#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * (CHAR_BIT / 2))) - void * reallocarray(void *optr, size_t nmemb, size_t size) { - if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) && - size > 0 && nmemb > 0 && SIZE_MAX / nmemb < size) { - errno = ENOMEM; - return NULL; - } - return realloc(optr, size * nmemb); + int e = reallocarr(&optr, nmemb, size); + + if (e == 0) + return optr; + errno = e; + return NULL; } |
