Date: Thu, 15 Jul 2021 00:56:35 GMT From: Neel Chauhan <nc@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 4211457e40e0 - main - Add missing libkern/strnstr.c file Message-ID: <202107150056.16F0uZC5005961@gitrepo.freebsd.org>
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The branch main has been updated by nc (ports committer): URL: https://cgit.FreeBSD.org/src/commit/?id=4211457e40e07f6f820c4171c7db81f028fd23af commit 4211457e40e07f6f820c4171c7db81f028fd23af Author: Greg V <greg@unrelenting.technology> AuthorDate: 2021-07-15 00:56:03 +0000 Commit: Neel Chauhan <nc@FreeBSD.org> CommitDate: 2021-07-15 00:56:03 +0000 Add missing libkern/strnstr.c file Apparently it wasn't picked up by git. Reviewed by: bz, hselasky, nc Differential Revision: https://reviews.freebsd.org/D31131 --- sys/libkern/strnstr.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/sys/libkern/strnstr.c b/sys/libkern/strnstr.c new file mode 100644 index 000000000000..9183e2a7017d --- /dev/null +++ b/sys/libkern/strnstr.c @@ -0,0 +1,64 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org> + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * 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. + * + * 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. + */ + +#include <sys/cdefs.h> + +#include <sys/param.h> +#include <sys/libkern.h> + +/* + * Find the first occurrence of find in s, where the search is limited to the + * first slen characters of s. + */ +char * +strnstr(const char *s, const char *find, size_t slen) +{ + char c, sc; + size_t len; + + if ((c = *find++) != '\0') { + len = strlen(find); + do { + do { + if (slen-- < 1 || (sc = *s++) == '\0') + return (NULL); + } while (sc != c); + if (len > slen) + return (NULL); + } while (strncmp(s, find, len) != 0); + s--; + } + return (__DECONST(char *, s)); +}
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