f9fb182809
Update files from Gregory Nutt to Apache 2.0 license. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/****************************************************************************
|
|
* fs/vfs/fs_fsync.c
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <assert.h>
|
|
|
|
#include <nuttx/sched.h>
|
|
#include <nuttx/cancelpt.h>
|
|
#include <nuttx/fs/fs.h>
|
|
|
|
#include "inode/inode.h"
|
|
|
|
#ifndef CONFIG_DISABLE_MOUNTPOINT
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: file_fsync
|
|
*
|
|
* Description:
|
|
* Equivalent to the standard fsync() function except that is accepts a
|
|
* struct file instance instead of a file descriptor and it does not set
|
|
* the errno variable.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int file_fsync(FAR struct file *filep)
|
|
{
|
|
struct inode *inode;
|
|
|
|
/* Was this file opened for write access? */
|
|
|
|
if ((filep->f_oflags & O_WROK) == 0)
|
|
{
|
|
return -EBADF;
|
|
}
|
|
|
|
/* Is this inode a registered mountpoint? Does it support the
|
|
* sync operations may be relevant to device drivers but only
|
|
* the mountpoint operations vtable contains a sync method.
|
|
*/
|
|
|
|
inode = filep->f_inode;
|
|
if (!inode || !INODE_IS_MOUNTPT(inode) ||
|
|
!inode->u.i_mops || !inode->u.i_mops->sync)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Yes, then tell the mountpoint to sync this file */
|
|
|
|
return inode->u.i_mops->sync(filep);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: fsync
|
|
*
|
|
* Description:
|
|
* This func simply binds inode sync methods to the sync system call.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int fsync(int fd)
|
|
{
|
|
FAR struct file *filep;
|
|
int ret;
|
|
|
|
/* fsync() is a cancellation point */
|
|
|
|
enter_cancellation_point();
|
|
|
|
/* Get the file structure corresponding to the file descriptor. */
|
|
|
|
ret = fs_getfilep(fd, &filep);
|
|
if (ret < 0)
|
|
{
|
|
goto errout;
|
|
}
|
|
|
|
DEBUGASSERT(filep != NULL);
|
|
|
|
/* Perform the fsync operation */
|
|
|
|
ret = file_fsync(filep);
|
|
if (ret < 0)
|
|
{
|
|
goto errout;
|
|
}
|
|
|
|
leave_cancellation_point();
|
|
return ret;
|
|
|
|
errout:
|
|
leave_cancellation_point();
|
|
set_errno(-ret);
|
|
return ERROR;
|
|
}
|
|
|
|
#endif /* !CONFIG_DISABLE_MOUNTPOINT */
|