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bfff8b1b | 1 | /* Copyright (C) 1993-2017 Free Software Foundation, Inc. |
c84142e8 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
c84142e8 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
c84142e8 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
c84142e8 UD |
18 | #ifdef HAVE_CONFIG_H |
19 | # include <config.h> | |
20 | #endif | |
28f540f4 | 21 | |
c84142e8 UD |
22 | #ifdef _LIBC |
23 | # include <string.h> | |
24 | #else | |
25 | # include <sys/types.h> | |
26 | #endif | |
27 | ||
ab6a873f L |
28 | #ifndef STPNCPY |
29 | # ifdef weak_alias | |
30 | # define STPNCPY __stpncpy | |
31 | weak_alias (__stpncpy, stpncpy) | |
32 | # else | |
33 | # define STPNCPY stpncpy | |
34 | # endif | |
c84142e8 | 35 | #endif |
28f540f4 RM |
36 | |
37 | /* Copy no more than N characters of SRC to DEST, returning the address of | |
c7fd2f47 | 38 | the terminating '\0' in DEST, if any, or else DEST + N. */ |
28f540f4 | 39 | char * |
ab6a873f | 40 | STPNCPY (char *dest, const char *src, size_t n) |
28f540f4 | 41 | { |
48497aba WD |
42 | size_t size = __strnlen (src, n); |
43 | memcpy (dest, src, size); | |
44 | dest += size; | |
45 | if (size == n) | |
75cd5204 | 46 | return dest; |
48497aba | 47 | return memset (dest, '\0', n - size); |
28f540f4 | 48 | } |
c84142e8 | 49 | #ifdef weak_alias |
37ba7d66 | 50 | libc_hidden_def (__stpncpy) |
c84142e8 | 51 | #endif |