xref: /xnu-10002.1.13/libsyscall/wrappers/string/strlcpy.c (revision 1031c584a5e37aff177559b9f69dbd3c8c3fd30a)
1*1031c584SApple OSS Distributions /*
2*1031c584SApple OSS Distributions  * Copyright (c) 2011 Apple, Inc. All rights reserved.
3*1031c584SApple OSS Distributions  *
4*1031c584SApple OSS Distributions  * @APPLE_LICENSE_HEADER_START@
5*1031c584SApple OSS Distributions  *
6*1031c584SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*1031c584SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*1031c584SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*1031c584SApple OSS Distributions  * compliance with the License. Please obtain a copy of the License at
10*1031c584SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this
11*1031c584SApple OSS Distributions  * file.
12*1031c584SApple OSS Distributions  *
13*1031c584SApple OSS Distributions  * The Original Code and all software distributed under the License are
14*1031c584SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15*1031c584SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16*1031c584SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17*1031c584SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18*1031c584SApple OSS Distributions  * Please see the License for the specific language governing rights and
19*1031c584SApple OSS Distributions  * limitations under the License.
20*1031c584SApple OSS Distributions  *
21*1031c584SApple OSS Distributions  * @APPLE_LICENSE_HEADER_END@
22*1031c584SApple OSS Distributions  */
23*1031c584SApple OSS Distributions 
24*1031c584SApple OSS Distributions #include "strings.h"
25*1031c584SApple OSS Distributions 
26*1031c584SApple OSS Distributions __attribute__((visibility("hidden")))
27*1031c584SApple OSS Distributions size_t
_libkernel_strlcpy(char * restrict dst,const char * restrict src,size_t maxlen)28*1031c584SApple OSS Distributions _libkernel_strlcpy(char * restrict dst, const char * restrict src, size_t maxlen)
29*1031c584SApple OSS Distributions {
30*1031c584SApple OSS Distributions 	const size_t srclen = _libkernel_strlen(src);
31*1031c584SApple OSS Distributions 	if (srclen < maxlen) {
32*1031c584SApple OSS Distributions 		_libkernel_memmove(dst, src, srclen + 1);
33*1031c584SApple OSS Distributions 	} else if (maxlen != 0) {
34*1031c584SApple OSS Distributions 		_libkernel_memmove(dst, src, maxlen - 1);
35*1031c584SApple OSS Distributions 		dst[maxlen - 1] = '\0';
36*1031c584SApple OSS Distributions 	}
37*1031c584SApple OSS Distributions 	return srclen;
38*1031c584SApple OSS Distributions }
39