Date: Wed, 26 Aug 2015 23:28:11 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r287181 - head/lib/libc/string Message-ID: <201508262328.t7QNSBYE013894@repo.freebsd.org>
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Author: delphij Date: Wed Aug 26 23:28:10 2015 New Revision: 287181 URL: https://svnweb.freebsd.org/changeset/base/287181 Log: Replace strndup with OpenBSD's implementation. MFC after: 2 weeks Modified: head/lib/libc/string/strndup.c Modified: head/lib/libc/string/strndup.c ============================================================================== --- head/lib/libc/string/strndup.c Wed Aug 26 22:59:58 2015 (r287180) +++ head/lib/libc/string/strndup.c Wed Aug 26 23:28:10 2015 (r287181) @@ -1,32 +1,19 @@ -/* $NetBSD: strndup.c,v 1.3 2007/01/14 23:41:24 cbiere Exp $ */ +/* $OpenBSD: strndup.c,v 1.1 2010/05/18 22:24:55 tedu Exp $ */ /* - * Copyright (c) 1988, 1993 - * The Regents of the University of California. All rights reserved. + * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com> * - * 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. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. + * 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. * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. + * 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. */ #include <sys/cdefs.h> @@ -37,15 +24,17 @@ __FBSDID("$FreeBSD$"); #include <string.h> char * -strndup(const char *str, size_t n) +strndup(const char *str, size_t maxlen) { - size_t len; char *copy; + size_t len; + + len = strnlen(str, maxlen); + copy = malloc(len + 1); + if (copy != NULL) { + (void)memcpy(copy, str, len); + copy[len] = '\0'; + } - len = strnlen(str, n); - if ((copy = malloc(len + 1)) == NULL) - return (NULL); - memcpy(copy, str, len); - copy[len] = '\0'; - return (copy); + return copy; }
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