Add an implementation of strdup() to libkern. Allocated memory is of
type M_STRING, now defined in malloc.h. Useful when string parsing must occur using the kernel strsep() and we want to avoid toasting the source string. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=111317
@ -1130,6 +1130,7 @@ libkern/skpc.c standard
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libkern/strcat.c standard
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libkern/strcmp.c standard
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libkern/strcpy.c standard
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libkern/strdup.c standard
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libkern/strlcat.c standard
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libkern/strlcpy.c standard
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libkern/strlen.c standard
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54
sys/libkern/strdup.c
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54
sys/libkern/strdup.c
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@ -0,0 +1,54 @@
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/*-
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* Copyright (c) 2003 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by NAI Labs,
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* the Security Research Division of Network Associates, Inc. under
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* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
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* CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/libkern.h>
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#include <sys/malloc.h>
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MALLOC_DEFINE(M_STRING, "string", "string buffers");
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char *
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strdup(const char *string)
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{
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size_t len;
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char *copy;
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len = strlen(string) + 1;
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copy = malloc(len, M_STRING, M_WAITOK);
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bcopy(string, copy, len);
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return (copy);
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}
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@ -92,6 +92,7 @@ void srandom(u_long);
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char *strcat(char * __restrict, const char * __restrict);
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int strcmp(const char *, const char *);
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char *strcpy(char * __restrict, const char * __restrict);
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char *strdup(const char *__restrict);
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size_t strlcat(char *, const char *, size_t);
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size_t strlcpy(char *, const char *, size_t);
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size_t strlen(const char *);
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@ -79,6 +79,7 @@ struct malloc_type {
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MALLOC_DECLARE(M_CACHE);
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MALLOC_DECLARE(M_DEVBUF);
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MALLOC_DECLARE(M_STRING);
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MALLOC_DECLARE(M_TEMP);
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MALLOC_DECLARE(M_IP6OPT); /* for INET6 */
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