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04277e02 | 1 | /* Copyright (C) 1991-2019 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 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
28f540f4 | 18 | #include <string.h> |
28f540f4 | 19 | |
9a0a462c | 20 | #undef strncpy |
c84142e8 | 21 | |
ab6a873f | 22 | #ifndef STRNCPY |
f6482cf2 | 23 | #define STRNCPY strncpy |
ab6a873f L |
24 | #endif |
25 | ||
28f540f4 | 26 | char * |
ab6a873f | 27 | STRNCPY (char *s1, const char *s2, size_t n) |
28f540f4 | 28 | { |
f6482cf2 WD |
29 | size_t size = __strnlen (s2, n); |
30 | if (size != n) | |
31 | memset (s1 + size, '\0', n - size); | |
32 | return memcpy (s1, s2, size); | |
28f540f4 | 33 | } |
85dd1003 | 34 | libc_hidden_builtin_def (strncpy) |