xref: /xnu-10063.121.3/libsyscall/wrappers/string/strlcpy.c (revision 2c2f96dc2b9a4408a43d3150ae9c105355ca3daa)
1*2c2f96dcSApple OSS Distributions /*
2*2c2f96dcSApple OSS Distributions  * Copyright (c) 2011 Apple, Inc. All rights reserved.
3*2c2f96dcSApple OSS Distributions  *
4*2c2f96dcSApple OSS Distributions  * @APPLE_LICENSE_HEADER_START@
5*2c2f96dcSApple OSS Distributions  *
6*2c2f96dcSApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*2c2f96dcSApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*2c2f96dcSApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*2c2f96dcSApple OSS Distributions  * compliance with the License. Please obtain a copy of the License at
10*2c2f96dcSApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this
11*2c2f96dcSApple OSS Distributions  * file.
12*2c2f96dcSApple OSS Distributions  *
13*2c2f96dcSApple OSS Distributions  * The Original Code and all software distributed under the License are
14*2c2f96dcSApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15*2c2f96dcSApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16*2c2f96dcSApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17*2c2f96dcSApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18*2c2f96dcSApple OSS Distributions  * Please see the License for the specific language governing rights and
19*2c2f96dcSApple OSS Distributions  * limitations under the License.
20*2c2f96dcSApple OSS Distributions  *
21*2c2f96dcSApple OSS Distributions  * @APPLE_LICENSE_HEADER_END@
22*2c2f96dcSApple OSS Distributions  */
23*2c2f96dcSApple OSS Distributions 
24*2c2f96dcSApple OSS Distributions #include "strings.h"
25*2c2f96dcSApple OSS Distributions 
26*2c2f96dcSApple OSS Distributions __attribute__((visibility("hidden")))
27*2c2f96dcSApple OSS Distributions size_t
_libkernel_strlcpy(char * restrict dst,const char * restrict src,size_t maxlen)28*2c2f96dcSApple OSS Distributions _libkernel_strlcpy(char * restrict dst, const char * restrict src, size_t maxlen)
29*2c2f96dcSApple OSS Distributions {
30*2c2f96dcSApple OSS Distributions 	const size_t srclen = _libkernel_strlen(src);
31*2c2f96dcSApple OSS Distributions 	if (srclen < maxlen) {
32*2c2f96dcSApple OSS Distributions 		_libkernel_memmove(dst, src, srclen + 1);
33*2c2f96dcSApple OSS Distributions 	} else if (maxlen != 0) {
34*2c2f96dcSApple OSS Distributions 		_libkernel_memmove(dst, src, maxlen - 1);
35*2c2f96dcSApple OSS Distributions 		dst[maxlen - 1] = '\0';
36*2c2f96dcSApple OSS Distributions 	}
37*2c2f96dcSApple OSS Distributions 	return srclen;
38*2c2f96dcSApple OSS Distributions }
39