diff options
Diffstat (limited to 'firmware/common/strlcat.c')
-rw-r--r-- | firmware/common/strlcat.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/firmware/common/strlcat.c b/firmware/common/strlcat.c new file mode 100644 index 0000000000..0a113dd134 --- /dev/null +++ b/firmware/common/strlcat.c | |||
@@ -0,0 +1,56 @@ | |||
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 | #include <sys/types.h> | ||
20 | #include <string.h> | ||
21 | |||
22 | /* | ||
23 | * Appends src to string dst of size siz (unlike strncat, siz is the | ||
24 | * full size of dst, not space left). At most siz-1 characters | ||
25 | * will be copied. Always NUL terminates (unless siz <= strlen(dst)). | ||
26 | * Returns strlen(src) + MIN(siz, strlen(initial dst)). | ||
27 | * If retval >= siz, truncation occurred. | ||
28 | */ | ||
29 | size_t | ||
30 | strlcat(char *dst, const char *src, size_t siz) | ||
31 | { | ||
32 | char *d = dst; | ||
33 | const char *s = src; | ||
34 | size_t n = siz; | ||
35 | size_t dlen; | ||
36 | |||
37 | /* Find the end of dst and adjust bytes left but don't go past end */ | ||
38 | while (n-- != 0 && *d != '\0') | ||
39 | d++; | ||
40 | dlen = d - dst; | ||
41 | n = siz - dlen; | ||
42 | |||
43 | if (n == 0) | ||
44 | return(dlen + strlen(s)); | ||
45 | while (*s != '\0') { | ||
46 | if (n != 1) { | ||
47 | *d++ = *s; | ||
48 | n--; | ||
49 | } | ||
50 | s++; | ||
51 | } | ||
52 | *d = '\0'; | ||
53 | |||
54 | return(dlen + (s - src)); /* count does not include NUL */ | ||
55 | } | ||
56 | |||