xref: /xnu-8796.121.2/libsyscall/wrappers/string/strlcpy.c (revision c54f35ca767986246321eb901baf8f5ff7923f6a) !
1*c54f35caSApple OSS Distributions /*
2*c54f35caSApple OSS Distributions  * Copyright (c) 2011 Apple, Inc. All rights reserved.
3*c54f35caSApple OSS Distributions  *
4*c54f35caSApple OSS Distributions  * @APPLE_LICENSE_HEADER_START@
5*c54f35caSApple OSS Distributions  *
6*c54f35caSApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*c54f35caSApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*c54f35caSApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*c54f35caSApple OSS Distributions  * compliance with the License. Please obtain a copy of the License at
10*c54f35caSApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this
11*c54f35caSApple OSS Distributions  * file.
12*c54f35caSApple OSS Distributions  *
13*c54f35caSApple OSS Distributions  * The Original Code and all software distributed under the License are
14*c54f35caSApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15*c54f35caSApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16*c54f35caSApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17*c54f35caSApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18*c54f35caSApple OSS Distributions  * Please see the License for the specific language governing rights and
19*c54f35caSApple OSS Distributions  * limitations under the License.
20*c54f35caSApple OSS Distributions  *
21*c54f35caSApple OSS Distributions  * @APPLE_LICENSE_HEADER_END@
22*c54f35caSApple OSS Distributions  */
23*c54f35caSApple OSS Distributions 
24*c54f35caSApple OSS Distributions #include "strings.h"
25*c54f35caSApple OSS Distributions 
26*c54f35caSApple OSS Distributions __attribute__((visibility("hidden")))
27*c54f35caSApple OSS Distributions size_t
_libkernel_strlcpy(char * restrict dst,const char * restrict src,size_t maxlen)28*c54f35caSApple OSS Distributions _libkernel_strlcpy(char * restrict dst, const char * restrict src, size_t maxlen)
29*c54f35caSApple OSS Distributions {
30*c54f35caSApple OSS Distributions 	const size_t srclen = _libkernel_strlen(src);
31*c54f35caSApple OSS Distributions 	if (srclen < maxlen) {
32*c54f35caSApple OSS Distributions 		_libkernel_memmove(dst, src, srclen + 1);
33*c54f35caSApple OSS Distributions 	} else if (maxlen != 0) {
34*c54f35caSApple OSS Distributions 		_libkernel_memmove(dst, src, maxlen - 1);
35*c54f35caSApple OSS Distributions 		dst[maxlen - 1] = '\0';
36*c54f35caSApple OSS Distributions 	}
37*c54f35caSApple OSS Distributions 	return srclen;
38*c54f35caSApple OSS Distributions }
39