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688903eb | 1 | /* Copyright (C) 1991-2018 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 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
8215c9ec UD |
17 | |
18 | #include <stdarg.h> | |
4e2f43f8 | 19 | #include <libio/libioP.h> |
8215c9ec | 20 | |
4e2f43f8 ZW |
21 | |
22 | /* Write formatted output into S, according to the format string FORMAT, | |
23 | writing no more than MAXLEN characters. */ | |
8215c9ec | 24 | int |
4e2f43f8 | 25 | __swprintf_chk (wchar_t *s, size_t maxlen, int flag, size_t slen, |
8215c9ec UD |
26 | const wchar_t *format, ...) |
27 | { | |
4e2f43f8 ZW |
28 | if (__glibc_unlikely (slen < maxlen)) |
29 | __chk_fail (); | |
30 | ||
31 | /* For flag > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n | |
32 | can only come from read-only format strings. */ | |
33 | unsigned int mode = (flag > 0) ? PRINTF_FORTIFY : 0; | |
34 | va_list ap; | |
35 | int ret; | |
8215c9ec | 36 | |
4e2f43f8 ZW |
37 | va_start (ap, format); |
38 | ret = __vswprintf_internal (s, maxlen, format, ap, mode); | |
39 | va_end (ap); | |
8215c9ec | 40 | |
4e2f43f8 | 41 | return ret; |
8215c9ec | 42 | } |