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2b778ceb | 1 | /* Copyright (C) 1991-2021 Free Software Foundation, Inc. |
8215c9ec UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
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. | |
8 | ||
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 | |
12 | Lesser General Public License for more details. | |
13 | ||
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/>. */ |
8215c9ec | 17 | |
4e2f43f8 | 18 | #include <libio/libioP.h> |
8215c9ec UD |
19 | |
20 | ||
21 | /* Write formatted output into S, according to the format | |
22 | string FORMAT, writing no more than MAXLEN characters. */ | |
8215c9ec | 23 | int |
4e2f43f8 ZW |
24 | __vswprintf_chk (wchar_t *s, size_t maxlen, int flag, size_t slen, |
25 | const wchar_t *format, va_list ap) | |
8215c9ec | 26 | { |
a1ffb40e | 27 | if (__glibc_unlikely (slen < maxlen)) |
8215c9ec UD |
28 | __chk_fail (); |
29 | ||
4e2f43f8 | 30 | /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n |
8215c9ec | 31 | can only come from read-only format strings. */ |
4e2f43f8 | 32 | unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0; |
8215c9ec | 33 | |
4e2f43f8 | 34 | return __vswprintf_internal (s, maxlen, format, ap, mode); |
8215c9ec | 35 | } |