xref: /xnu-10002.41.9/libsyscall/wrappers/string/strlcpy.c (revision 699cd48037512bf4380799317ca44ca453c82f57)
1*699cd480SApple OSS Distributions /*
2*699cd480SApple OSS Distributions  * Copyright (c) 2011 Apple, Inc. All rights reserved.
3*699cd480SApple OSS Distributions  *
4*699cd480SApple OSS Distributions  * @APPLE_LICENSE_HEADER_START@
5*699cd480SApple OSS Distributions  *
6*699cd480SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*699cd480SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*699cd480SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*699cd480SApple OSS Distributions  * compliance with the License. Please obtain a copy of the License at
10*699cd480SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this
11*699cd480SApple OSS Distributions  * file.
12*699cd480SApple OSS Distributions  *
13*699cd480SApple OSS Distributions  * The Original Code and all software distributed under the License are
14*699cd480SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15*699cd480SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16*699cd480SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17*699cd480SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18*699cd480SApple OSS Distributions  * Please see the License for the specific language governing rights and
19*699cd480SApple OSS Distributions  * limitations under the License.
20*699cd480SApple OSS Distributions  *
21*699cd480SApple OSS Distributions  * @APPLE_LICENSE_HEADER_END@
22*699cd480SApple OSS Distributions  */
23*699cd480SApple OSS Distributions 
24*699cd480SApple OSS Distributions #include "strings.h"
25*699cd480SApple OSS Distributions 
26*699cd480SApple OSS Distributions __attribute__((visibility("hidden")))
27*699cd480SApple OSS Distributions size_t
_libkernel_strlcpy(char * restrict dst,const char * restrict src,size_t maxlen)28*699cd480SApple OSS Distributions _libkernel_strlcpy(char * restrict dst, const char * restrict src, size_t maxlen)
29*699cd480SApple OSS Distributions {
30*699cd480SApple OSS Distributions 	const size_t srclen = _libkernel_strlen(src);
31*699cd480SApple OSS Distributions 	if (srclen < maxlen) {
32*699cd480SApple OSS Distributions 		_libkernel_memmove(dst, src, srclen + 1);
33*699cd480SApple OSS Distributions 	} else if (maxlen != 0) {
34*699cd480SApple OSS Distributions 		_libkernel_memmove(dst, src, maxlen - 1);
35*699cd480SApple OSS Distributions 		dst[maxlen - 1] = '\0';
36*699cd480SApple OSS Distributions 	}
37*699cd480SApple OSS Distributions 	return srclen;
38*699cd480SApple OSS Distributions }
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