| /* Synchronize I/O in given file descriptor. |
| Copyright (C) 1997, 1999, 2002, 2005 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| |
| /* We use an UGLY hack to prevent gcc from finding us cheating. The |
| implementation of aio_fsync and aio_fsync64 are identical and so |
| we want to avoid code duplication by using aliases. But gcc sees |
| the different parameter lists and prints a warning. We define here |
| a function so that aio_fsync64 has no prototype. */ |
| #define aio_fsync64 XXX |
| #include <aio.h> |
| /* And undo the hack. */ |
| #undef aio_fsync64 |
| #include <errno.h> |
| |
| #include <aio_misc.h> |
| |
| |
| int |
| aio_fsync (int op, struct aiocb *aiocbp) |
| { |
| int flags; |
| |
| if (op != O_DSYNC && __builtin_expect (op != O_SYNC, 0)) |
| { |
| __set_errno (EINVAL); |
| return -1; |
| } |
| |
| flags = fcntl (aiocbp->aio_fildes, F_GETFL); |
| if (__builtin_expect (flags == -1, 0) |
| || __builtin_expect ((flags & (O_RDWR | O_WRONLY)) == 0, 0)) |
| { |
| __set_errno (EBADF); |
| return -1; |
| } |
| |
| return (__aio_enqueue_request ((aiocb_union *) aiocbp, |
| op == O_SYNC ? LIO_SYNC : LIO_DSYNC) == NULL |
| ? -1 : 0); |
| } |
| |
| weak_alias (aio_fsync, aio_fsync64) |