diff options
Diffstat (limited to 'src/lib/libc/string/strlcpy.c')
-rw-r--r-- | src/lib/libc/string/strlcpy.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/lib/libc/string/strlcpy.c b/src/lib/libc/string/strlcpy.c new file mode 100644 index 0000000000..1a60445599 --- /dev/null +++ b/src/lib/libc/string/strlcpy.c | |||
@@ -0,0 +1,63 @@ | |||
1 | /* $OpenBSD: strlcpy.c,v 1.1 1998/07/01 01:29:45 millert Exp $ */ | ||
2 | |||
3 | /* | ||
4 | * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> | ||
5 | * All rights reserved. | ||
6 | * | ||
7 | * Redistribution and use in source and binary forms, with or without | ||
8 | * modification, are permitted provided that the following conditions | ||
9 | * are met: | ||
10 | * 1. Redistributions of source code must retain the above copyright | ||
11 | * notice, this list of conditions and the following disclaimer. | ||
12 | * 2. Redistributions in binary form must reproduce the above copyright | ||
13 | * notice, this list of conditions and the following disclaimer in the | ||
14 | * documentation and/or other materials provided with the distribution. | ||
15 | * 3. The name of the author may not be used to endorse or promote products | ||
16 | * derived from this software without specific prior written permission. | ||
17 | * | ||
18 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, | ||
19 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | ||
20 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | ||
21 | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
22 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | ||
24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | ||
25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | ||
26 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | ||
27 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
28 | */ | ||
29 | |||
30 | #if defined(LIBC_SCCS) && !defined(lint) | ||
31 | static char *rcsid = "$OpenBSD: strlcpy.c,v 1.1 1998/07/01 01:29:45 millert Exp $"; | ||
32 | #endif /* LIBC_SCCS and not lint */ | ||
33 | |||
34 | #include <sys/types.h> | ||
35 | #include <string.h> | ||
36 | |||
37 | /* | ||
38 | * Copy src to string dst of size siz. At most siz-1 characters | ||
39 | * will be copied. Always NUL terminates (unless siz == 0). | ||
40 | * Returns strlen(src); if retval >= siz, truncation occurred. | ||
41 | */ | ||
42 | size_t strlcpy(dst, src, siz) | ||
43 | char *dst; | ||
44 | char *src; | ||
45 | size_t siz; | ||
46 | { | ||
47 | register char *d = dst; | ||
48 | register const char *s = src; | ||
49 | register size_t n = siz; | ||
50 | |||
51 | if (n == 0) | ||
52 | return(strlen(s)); | ||
53 | while (*s != '\0') { | ||
54 | if (n != 1) { | ||
55 | *d++ = *s; | ||
56 | n--; | ||
57 | } | ||
58 | s++; | ||
59 | } | ||
60 | *d = '\0'; | ||
61 | |||
62 | return(s - src); /* count does not include NUL */ | ||
63 | } | ||