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2b778ceb | 1 | /* Copyright (C) 1993-2021 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
96aa2d94 | 3 | |
41bdb6e2 AJ |
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. | |
96aa2d94 | 8 | |
41bdb6e2 AJ |
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 | |
40a55d20 | 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
41bdb6e2 AJ |
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/>. |
41bdb6e2 AJ |
17 | |
18 | As a special exception, if you link the code in this file with | |
19 | files compiled with a GNU compiler to produce an executable, | |
20 | that does not cause the resulting executable to be covered by | |
21 | the GNU Lesser General Public License. This exception does not | |
22 | however invalidate any other reasons why the executable file | |
23 | might be covered by the GNU Lesser General Public License. | |
24 | This exception applies to code released by its copyright holders | |
25 | in files containing the exception. */ | |
96aa2d94 RM |
26 | |
27 | #include "libioP.h" | |
a68b0d31 | 28 | #include <stdio.h> |
96aa2d94 RM |
29 | |
30 | int | |
9964a145 | 31 | _IO_fflush (FILE *fp) |
96aa2d94 RM |
32 | { |
33 | if (fp == NULL) | |
d18ea0c5 | 34 | return _IO_flush_all (); |
96aa2d94 RM |
35 | else |
36 | { | |
7c713e28 | 37 | int result; |
96aa2d94 | 38 | CHECK_FILE (fp, EOF); |
0261d33f | 39 | _IO_acquire_lock (fp); |
7c713e28 | 40 | result = _IO_SYNC (fp) ? EOF : 0; |
0261d33f | 41 | _IO_release_lock (fp); |
7c713e28 | 42 | return result; |
96aa2d94 RM |
43 | } |
44 | } | |
d18ea0c5 | 45 | libc_hidden_def (_IO_fflush) |
96aa2d94 RM |
46 | |
47 | weak_alias (_IO_fflush, fflush) | |
5182cbc5 | 48 | libc_hidden_weak (fflush) |
bdb04ee8 UD |
49 | |
50 | #ifndef _IO_MTSAFE_IO | |
eb1fae6a JM |
51 | strong_alias (_IO_fflush, __fflush_unlocked) |
52 | libc_hidden_def (__fflush_unlocked) | |
bdb04ee8 | 53 | weak_alias (_IO_fflush, fflush_unlocked) |
bf2cc5fb | 54 | libc_hidden_weak (fflush_unlocked) |
bdb04ee8 | 55 | #endif |