| xf.li | bfc6e71 | 2025-02-07 01:54:34 -0800 | [diff] [blame^] | 1 | /* Synchronize I/O in given file descriptor. |
| 2 | Copyright (C) 1997-2016 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. |
| 5 | |
| 6 | The GNU C Library is free software; you can redistribute it and/or |
| 7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either |
| 9 | version 2.1 of the License, or (at your option) any later version. |
| 10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | Lesser General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU Lesser General Public |
| 17 | License along with the GNU C Library; if not, see |
| 18 | <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | |
| 21 | /* We use an UGLY hack to prevent gcc from finding us cheating. The |
| 22 | implementation of aio_fsync and aio_fsync64 are identical and so |
| 23 | we want to avoid code duplication by using aliases. But gcc sees |
| 24 | the different parameter lists and prints a warning. We define here |
| 25 | a function so that aio_fsync64 has no prototype. */ |
| 26 | #define aio_fsync64 XXX |
| 27 | #include <aio.h> |
| 28 | /* And undo the hack. */ |
| 29 | #undef aio_fsync64 |
| 30 | #include <errno.h> |
| 31 | #include <fcntl.h> |
| 32 | |
| 33 | #include <aio_misc.h> |
| 34 | |
| 35 | |
| 36 | int |
| 37 | aio_fsync (int op, struct aiocb *aiocbp) |
| 38 | { |
| 39 | if (op != O_DSYNC && __builtin_expect (op != O_SYNC, 0)) |
| 40 | { |
| 41 | __set_errno (EINVAL); |
| 42 | return -1; |
| 43 | } |
| 44 | |
| 45 | /* Verify that this is an open file descriptor. */ |
| 46 | if (__glibc_unlikely (fcntl (aiocbp->aio_fildes, F_GETFL) == -1)) |
| 47 | { |
| 48 | __set_errno (EBADF); |
| 49 | return -1; |
| 50 | } |
| 51 | |
| 52 | return (__aio_enqueue_request ((aiocb_union *) aiocbp, |
| 53 | op == O_SYNC ? LIO_SYNC : LIO_DSYNC) == NULL |
| 54 | ? -1 : 0); |
| 55 | } |
| 56 | |
| 57 | weak_alias (aio_fsync, aio_fsync64) |