int fsw_posix_unmount(struct fsw_posix_volume *pvol)
{
if (pvol->vol != NULL)
fsw_unmount(pvol->vol);
fsw_free(pvol);
return 0;
}
EFI_STATUS EFIAPI fsw_efi_DriverBinding_Start(IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath)
{
EFI_STATUS Status;
EFI_BLOCK_IO *BlockIo;
EFI_DISK_IO *DiskIo;
FSW_VOLUME_DATA *Volume;
VBoxLogFlowFuncEnter();
// open consumed protocols
Status = BS->OpenProtocol(ControllerHandle,
&PROTO_NAME(BlockIoProtocol),
(VOID **) &BlockIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL); // NOTE: we only want to look at the MediaId
if (EFI_ERROR(Status)) {
VBoxLogFlowFuncLeaveRC(Status);
return Status;
}
Status = BS->OpenProtocol(ControllerHandle,
&PROTO_NAME(DiskIoProtocol),
(VOID **) &DiskIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER);
if (EFI_ERROR(Status)) {
VBoxLogFlowFuncLeaveRC(Status);
return Status;
}
// allocate volume structure
Volume = AllocateZeroPool(sizeof(FSW_VOLUME_DATA));
Status = fsw_efi_ReMount(Volume, ControllerHandle, DiskIo, BlockIo);
// on errors, close the opened protocols
if (EFI_ERROR(Status)) {
if (Volume->vol != NULL)
fsw_unmount(Volume->vol);
FreePool(Volume);
#if 0
if (Status == EFI_MEDIA_CHANGED)
Status = fsw_efi_ReMount(Volume, ControllerHandle, DiskIo, BlockIo);
else
#endif
BS->CloseProtocol(ControllerHandle,
&PROTO_NAME(DiskIoProtocol),
This->DriverBindingHandle,
ControllerHandle);
}
VBoxLogFlowFuncLeaveRC(Status);
return Status;
}
EFI_STATUS EFIAPI fsw_efi_DriverBinding_Stop(IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer)
{
EFI_STATUS Status;
EFI_FILE_IO_INTERFACE *FileSystem;
FSW_VOLUME_DATA *Volume;
#if DEBUG_LEVEL
// Print(L"fsw_efi_DriverBinding_Stop\n");
#endif
// get the installed SimpleFileSystem interface
Status = BS->OpenProtocol(ControllerHandle,
&PROTO_NAME(SimpleFileSystemProtocol),
(VOID **) &FileSystem,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (EFI_ERROR(Status))
return EFI_UNSUPPORTED;
// get private data structure
Volume = FSW_VOLUME_FROM_FILE_SYSTEM(FileSystem);
// uninstall Simple File System protocol
Status = BS->UninstallMultipleProtocolInterfaces(ControllerHandle,
&PROTO_NAME(SimpleFileSystemProtocol), &Volume->FileSystem,
NULL);
if (EFI_ERROR(Status)) {
// Print(L"Fsw ERROR: UninstallMultipleProtocolInterfaces returned %x\n", Status);
return Status;
}
#if DEBUG_LEVEL
// Print(L"fsw_efi_DriverBinding_Stop: protocol uninstalled successfully\n");
#endif
// release private data structure
if (Volume->vol != NULL)
fsw_unmount(Volume->vol);
FreePool(Volume);
Status = BS->CloseProtocol(ControllerHandle,
&PROTO_NAME(DiskIo2Protocol),
This->DriverBindingHandle,
ControllerHandle);
// close the consumed protocols
Status = BS->CloseProtocol(ControllerHandle,
&PROTO_NAME(DiskIoProtocol),
This->DriverBindingHandle,
ControllerHandle);
return Status;
}
VOID fsw_efi_DetachVolume(IN FSW_VOLUME_DATA *pVolume)
{
// uninstall Simple File System protocol
BS->UninstallMultipleProtocolInterfaces(pVolume->Handle,
&PROTO_NAME(SimpleFileSystemProtocol),
&pVolume->FileSystem,
NULL);
// release private data structure
if (pVolume->vol != NULL)
fsw_unmount(pVolume->vol);
FreePool(pVolume);
}
fsw_status_t fsw_mount(void *host_data,
struct fsw_host_table *host_table,
struct fsw_fstype_table *fstype_table,
struct fsw_volume **vol_out)
{
fsw_status_t status;
struct fsw_volume *vol;
// allocate memory for the structure
status = fsw_alloc_zero(fstype_table->volume_struct_size, (void **)&vol);
if (status)
return status;
// initialize fields
vol->phys_blocksize = 512;
vol->log_blocksize = 512;
vol->label.type = FSW_STRING_TYPE_EMPTY;
vol->host_data = host_data;
vol->host_table = host_table;
vol->fstype_table = fstype_table;
vol->host_string_type = host_table->native_string_type;
// let the fs driver mount the file system
status = vol->fstype_table->volume_mount(vol);
if (status)
goto errorexit;
/// @todo anything else?
*vol_out = vol;
return FSW_SUCCESS;
errorexit:
fsw_unmount(vol);
return status;
}
EFI_STATUS EFIAPI fsw_efi_DriverBinding_Start(IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath)
{
EFI_STATUS Status;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
EFI_BLOCK_IO2_PROTOCOL *BlockIo2;
EFI_DISK_IO_PROTOCOL *DiskIo;
EFI_DISK_IO2_PROTOCOL *DiskIo2;
FSW_VOLUME_DATA *Volume;
#if DEBUG_LEVEL
// Print(L"fsw_efi_DriverBinding_Start\n");
#endif
// open consumed protocols
Status = BS->OpenProtocol(ControllerHandle,
&PROTO_NAME(BlockIo2Protocol),
(VOID **) &BlockIo2,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (EFI_ERROR(Status)) {
BlockIo2 = NULL;
}
Status = BS->OpenProtocol(ControllerHandle,
&PROTO_NAME(BlockIoProtocol),
(VOID **) &BlockIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL); // NOTE: we only want to look at the MediaId
if ((BlockIo2 == NULL) && EFI_ERROR(Status)) {
// Print(L"Fsw ERROR: OpenProtocol(BlockIo) returned %x\n", Status);
return Status;
}
Status = BS->OpenProtocol(ControllerHandle,
&PROTO_NAME(DiskIo2Protocol),
(VOID **) &DiskIo2,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER);
if (EFI_ERROR(Status)) {
DiskIo2 = NULL;
}
Status = BS->OpenProtocol(ControllerHandle,
&PROTO_NAME(DiskIoProtocol),
(VOID **) &DiskIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER);
if ((DiskIo2 == NULL) && EFI_ERROR(Status)) {
// DBG("Fsw ERROR: OpenProtocol(DiskIo) returned %r\n", Status);
return Status;
}
// allocate volume structure
Volume = AllocateZeroPool(sizeof(FSW_VOLUME_DATA));
Volume->Signature = FSW_VOLUME_DATA_SIGNATURE;
Volume->Handle = ControllerHandle;
Volume->DiskIo = DiskIo;
Volume->DiskIo2 = DiskIo2;
Volume->LastIOStatus = EFI_SUCCESS;
if (BlockIo2 != NULL) {
Volume->MediaId = BlockIo2->Media->MediaId;
} else {
Volume->MediaId = BlockIo->Media->MediaId;
}
// mount the filesystem
Status = fsw_efi_map_status(fsw_mount(Volume, &fsw_efi_host_table,
&FSW_FSTYPE_TABLE_NAME(FSTYPE), &Volume->vol),
Volume);
if (!EFI_ERROR(Status)) {
// register the SimpleFileSystem protocol
Volume->FileSystem.Revision = EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_REVISION;
Volume->FileSystem.OpenVolume = fsw_efi_FileSystem_OpenVolume;
Status = BS->InstallMultipleProtocolInterfaces(
&ControllerHandle,
&PROTO_NAME(SimpleFileSystemProtocol),
&Volume->FileSystem,
NULL);
if (EFI_ERROR(Status)) {
// Print(L"Fsw ERROR: InstallMultipleProtocolInterfaces returned %x\n", Status);
}
}
// on errors, close the opened protocols
if (EFI_ERROR(Status)) {
if (Volume->vol != NULL)
fsw_unmount(Volume->vol);
FreePool(Volume);
BS->CloseProtocol(ControllerHandle,
&PROTO_NAME(DiskIo2Protocol),
This->DriverBindingHandle,
ControllerHandle);
BS->CloseProtocol(ControllerHandle,
&PROTO_NAME(DiskIoProtocol),
This->DriverBindingHandle,
ControllerHandle);
}
return Status;
}
static void free_dummy_volume(struct fsw_volume *vol)
{
fsw_free(vol->host_data);
fsw_unmount(vol);
}