/*!
* \brief
*
* Locks the drive and executes operations to be done upon entering MFS call.
* Cannot be called from an ISR.
*
* \param drive_ptr
* \param mode
*
* \return _mfs_error
*/
_mfs_error MFS_lock_and_enter(
MFS_DRIVE_STRUCT_PTR drive_ptr,
int mode)
{
_mfs_error error_code;
error_code = MFS_lock(drive_ptr);
if (error_code != MFS_NO_ERROR)
{
return error_code;
}
error_code = MFS_enter(drive_ptr, mode);
if (error_code != MFS_NO_ERROR)
{
MFS_unlock(drive_ptr);
}
return error_code;
}
int_32 MFS_Close_Device
(
MQX_FILE_PTR fd_ptr /* [IN] the MFS file handle for the device being closed */
)
{
MFS_DRIVE_STRUCT_PTR drive_ptr;
FILESYSTEM_INFO_DISK_PTR fsinfo_ptr;
int_32 result = MFS_NO_ERROR;
#if !MFSCFG_READ_ONLY
#if MFSCFG_READ_ONLY_CHECK
if (MFS_is_read_only (fd_ptr, NULL))
{
result = MFS_DISK_IS_WRITE_PROTECTED;
}
#endif
if (result != MFS_DISK_IS_WRITE_PROTECTED)
{
result = _io_ioctl(fd_ptr, IO_IOCTL_FLUSH_OUTPUT, NULL);
}
#endif
MFS_lock(fd_ptr, &drive_ptr);
#if !MFSCFG_READ_ONLY
if (result != MFS_DISK_IS_WRITE_PROTECTED)
{
MFS_Flush_caches(drive_ptr);
}
#endif
if ( _queue_is_empty(&drive_ptr->HANDLE_LIST) )
{
if ( drive_ptr->FAT_TYPE == MFS_FAT32 )
{
#if !MFSCFG_READ_ONLY
if (result != MFS_DISK_IS_WRITE_PROTECTED)
{
fsinfo_ptr = (FILESYSTEM_INFO_DISK_PTR)drive_ptr->DATA_SECTOR_PTR;
if ( fsinfo_ptr != NULL )
{
htodl(fsinfo_ptr->LEAD_SIG, FSI_LEADSIG);
htodl(fsinfo_ptr->STRUCT_SIG, FSI_STRUCTSIG);
htodl(fsinfo_ptr->FREE_COUNT, drive_ptr->FREE_COUNT);
htodl(fsinfo_ptr->NEXT_FREE, drive_ptr->NEXT_FREE_CLUSTER);
htodl(fsinfo_ptr->TRAIL_SIG, FSI_TRAILSIG);
MFS_Write_device_sector(drive_ptr, FSINFO_SECTOR, (char_ptr)fsinfo_ptr);
}
}
#endif
}
MFS_free_drive_data(drive_ptr, TRUE);
drive_ptr->MFS_FILE_PTR = NULL;
result = MFS_NO_ERROR;
}
else
{
/* liutest add for get unclose handle */
MFS_HANDLE_PTR next_handle;
next_handle = (MFS_HANDLE_PTR) _queue_head(&drive_ptr->HANDLE_LIST);
while ( next_handle )
{
printf("unclose handle 0x%X\n",(uint_32)next_handle);
next_handle = (MFS_HANDLE_PTR) _queue_next(&drive_ptr->HANDLE_LIST, (QUEUE_ELEMENT_STRUCT_PTR) next_handle);
}
result = MFS_SHARING_VIOLATION;
/* MFS_free_drive_data(drive_ptr, TRUE);
drive_ptr->MFS_FILE_PTR = NULL;
result = MFS_NO_ERROR;*/
}
MFS_unlock(drive_ptr,FALSE);
return result;
}