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 | } | ||
