| | 1 | /* $OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $ */ |
| | 2 | |
| | 3 | /* |
| | 4 | * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> |
| | 5 | * |
| | 6 | * Permission to use, copy, modify, and distribute this software for any |
| | 7 | * purpose with or without fee is hereby granted, provided that the above |
| | 8 | * copyright notice and this permission notice appear in all copies. |
| | 9 | * |
| | 10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| | 11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| | 12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| | 13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| | 14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| | 15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| | 16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| | 17 | */ |
| | 18 | |
| | 19 | /* OPENBSD ORIGINAL: lib/libc/string/strlcat.c */ |
| | 20 | |
| | 21 | #include "includes.h" |
| | 22 | #ifndef HAVE_STRLCAT |
| | 23 | |
| | 24 | #include <sys/types.h> |
| | 25 | #include <string.h> |
| | 26 | |
| | 27 | /* |
| | 28 | * Appends src to string dst of size siz (unlike strncat, siz is the |
| | 29 | * full size of dst, not space left). At most siz-1 characters |
| | 30 | * will be copied. Always NUL terminates (unless siz <= strlen(dst)). |
| | 31 | * Returns strlen(src) + MIN(siz, strlen(initial dst)). |
| | 32 | * If retval >= siz, truncation occurred. |
| | 33 | */ |
| | 34 | size_t |
| | 35 | strlcat(char *dst, const char *src, size_t siz) |
| | 36 | { |
| | 37 | char *d = dst; |
| | 38 | const char *s = src; |
| | 39 | size_t n = siz; |
| | 40 | size_t dlen; |
| | 41 | |
| | 42 | /* Find the end of dst and adjust bytes left but don't go past end */ |
| | 43 | while (n-- != 0 && *d != '\0') |
| | 44 | d++; |
| | 45 | dlen = d - dst; |
| | 46 | n = siz - dlen; |
| | 47 | |
| | 48 | if (n == 0) |
| | 49 | return(dlen + strlen(s)); |
| | 50 | while (*s != '\0') { |
| | 51 | if (n != 1) { |
| | 52 | *d++ = *s; |
| | 53 | n--; |
| | 54 | } |
| | 55 | s++; |
| | 56 | } |
| | 57 | *d = '\0'; |
| | 58 | |
| | 59 | return(dlen + (s - src)); /* count does not include NUL */ |
| | 60 | } |
| | 61 | |
| | 62 | #endif /* !HAVE_STRLCAT */ |
andersk / openssh.git / blame_incremental