+++ /dev/null
-/*++\r
-\r
-Copyright (c) 2004 - 2009, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php \r
- \r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
-\r
-Module Name:\r
-\r
- UnixBlockIo.c\r
-\r
-Abstract:\r
-\r
- Produce block IO abstractions for real devices on your PC using Posix APIs.\r
- The configuration of what devices to mount or emulate comes from UNIX \r
- environment variables. The variables must be visible to the Microsoft* \r
- Developer Studio for them to work.\r
-\r
- <F>ixed - Fixed disk like a hard drive.\r
- <R>emovable - Removable media like a floppy or CD-ROM.\r
- Read <O>nly - Write protected device.\r
- Read <W>rite - Read write device.\r
- <block count> - Decimal number of blocks a device supports.\r
- <block size> - Decimal number of bytes per block.\r
-\r
- UNIX envirnonment variable contents. '<' and '>' are not part of the variable, \r
- they are just used to make this help more readable. There should be no \r
- spaces between the ';'. Extra spaces will break the variable. A '!' is \r
- used to seperate multiple devices in a variable.\r
-\r
- EFI_UNIX_VIRTUAL_DISKS = \r
- <F | R><O | W>;<block count>;<block size>[!...]\r
-\r
- EFI_UNIX_PHYSICAL_DISKS =\r
- <drive letter>:<F | R><O | W>;<block count>;<block size>[!...]\r
-\r
- Virtual Disks: These devices use a file to emulate a hard disk or removable\r
- media device. \r
- \r
- Thus a 20 MB emulated hard drive would look like:\r
- EFI_UNIX_VIRTUAL_DISKS=FW;40960;512\r
-\r
- A 1.44MB emulated floppy with a block size of 1024 would look like:\r
- EFI_UNIX_VIRTUAL_DISKS=RW;1440;1024\r
-\r
- Physical Disks: These devices use UNIX to open a real device in your system\r
-\r
- Thus a 120 MB floppy would look like:\r
- EFI_UNIX_PHYSICAL_DISKS=B:RW;245760;512\r
-\r
- Thus a standard CD-ROM floppy would look like:\r
- EFI_UNIX_PHYSICAL_DISKS=Z:RO;307200;2048\r
-\r
-\r
- * Other names and brands may be claimed as the property of others.\r
-\r
---*/\r
-\r
-#include <fcntl.h>\r
-#include <unistd.h>\r
-#include "UnixBlockIo.h"\r
-\r
-//\r
-// Block IO protocol member functions\r
-//\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoReadBlocks (\r
- IN EFI_BLOCK_IO_PROTOCOL *This,\r
- IN UINT32 MediaId,\r
- IN EFI_LBA Lba,\r
- IN UINTN BufferSize,\r
- OUT VOID *Buffer\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- This - TODO: add argument description\r
- MediaId - TODO: add argument description\r
- Lba - TODO: add argument description\r
- BufferSize - TODO: add argument description\r
- Buffer - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoWriteBlocks (\r
- IN EFI_BLOCK_IO_PROTOCOL *This,\r
- IN UINT32 MediaId,\r
- IN EFI_LBA Lba,\r
- IN UINTN BufferSize,\r
- IN VOID *Buffer\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- This - TODO: add argument description\r
- MediaId - TODO: add argument description\r
- Lba - TODO: add argument description\r
- BufferSize - TODO: add argument description\r
- Buffer - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoFlushBlocks (\r
- IN EFI_BLOCK_IO_PROTOCOL *This\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- This - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoResetBlock (\r
- IN EFI_BLOCK_IO_PROTOCOL *This,\r
- IN BOOLEAN ExtendedVerification\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- This - TODO: add argument description\r
- ExtendedVerification - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-;\r
-\r
-//\r
-// Private Worker functions\r
-//\r
-EFI_STATUS\r
-UnixBlockIoCreateMapping (\r
- IN EFI_UNIX_IO_PROTOCOL *UnixIo,\r
- IN EFI_HANDLE EfiDeviceHandle,\r
- IN CHAR16 *Filename,\r
- IN BOOLEAN ReadOnly,\r
- IN BOOLEAN RemovableMedia,\r
- IN UINTN NumberOfBlocks,\r
- IN UINTN BlockSize\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- UnixIo - TODO: add argument description\r
- EfiDeviceHandle - TODO: add argument description\r
- Filename - TODO: add argument description\r
- ReadOnly - TODO: add argument description\r
- RemovableMedia - TODO: add argument description\r
- NumberOfBlocks - TODO: add argument description\r
- BlockSize - TODO: add argument description\r
- DeviceType - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-UnixBlockIoReadWriteCommon (\r
- IN UNIX_BLOCK_IO_PRIVATE *Private,\r
- IN UINT32 MediaId,\r
- IN EFI_LBA Lba,\r
- IN UINTN BufferSize,\r
- IN VOID *Buffer,\r
- IN CHAR8 *CallerName\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- Private - TODO: add argument description\r
- MediaId - TODO: add argument description\r
- Lba - TODO: add argument description\r
- BufferSize - TODO: add argument description\r
- Buffer - TODO: add argument description\r
- CallerName - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-UnixBlockIoError (\r
- IN UNIX_BLOCK_IO_PRIVATE *Private\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- Private - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-UnixBlockIoOpenDevice (\r
- UNIX_BLOCK_IO_PRIVATE *Private\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- Private - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-;\r
-\r
-CHAR16 *\r
-GetNextElementPastTerminator (\r
- IN CHAR16 *EnvironmentVariable,\r
- IN CHAR16 Terminator\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- EnvironmentVariable - TODO: add argument description\r
- Terminator - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-;\r
-EFI_DRIVER_BINDING_PROTOCOL gUnixBlockIoDriverBinding = {\r
- UnixBlockIoDriverBindingSupported,\r
- UnixBlockIoDriverBindingStart,\r
- UnixBlockIoDriverBindingStop,\r
- 0xa,\r
- NULL,\r
- NULL\r
-};\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoDriverBindingSupported (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Handle,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: This - add argument and description to function comment\r
-// TODO: Handle - add argument and description to function comment\r
-// TODO: RemainingDevicePath - add argument and description to function comment\r
-{\r
- EFI_STATUS Status;\r
- EFI_UNIX_IO_PROTOCOL *UnixIo;\r
-\r
- //\r
- // Open the IO Abstraction(s) needed to perform the supported test\r
- //\r
- Status = gBS->OpenProtocol (\r
- Handle,\r
- &gEfiUnixIoProtocolGuid,\r
- (VOID **)&UnixIo,\r
- This->DriverBindingHandle,\r
- Handle,\r
- EFI_OPEN_PROTOCOL_BY_DRIVER\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Make sure the UnixThunkProtocol is valid\r
- //\r
- Status = EFI_UNSUPPORTED;\r
- if (UnixIo->UnixThunk->Signature == EFI_UNIX_THUNK_PROTOCOL_SIGNATURE) {\r
-\r
- //\r
- // Check the GUID to see if this is a handle type the driver supports\r
- //\r
- if (CompareGuid (UnixIo->TypeGuid, &gEfiUnixVirtualDisksGuid) ) {\r
- Status = EFI_SUCCESS;\r
- }\r
- }\r
-\r
- //\r
- // Close the I/O Abstraction(s) used to perform the supported test\r
- //\r
- gBS->CloseProtocol (\r
- Handle,\r
- &gEfiUnixIoProtocolGuid,\r
- This->DriverBindingHandle,\r
- Handle\r
- );\r
- return Status;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoDriverBindingStart (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Handle,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: This - add argument and description to function comment\r
-// TODO: Handle - add argument and description to function comment\r
-// TODO: RemainingDevicePath - add argument and description to function comment\r
-{\r
- EFI_STATUS Status;\r
- EFI_UNIX_IO_PROTOCOL *UnixIo;\r
- CHAR16 Buffer[FILENAME_BUFFER_SIZE];\r
- CHAR16 *Str;\r
- BOOLEAN RemovableMedia;\r
- BOOLEAN WriteProtected;\r
- UINTN NumberOfBlocks;\r
- UINTN BlockSize;\r
- INTN i;\r
-\r
- //\r
- // Grab the protocols we need\r
- //\r
- \r
- Status = gBS->OpenProtocol (\r
- Handle,\r
- &gEfiUnixIoProtocolGuid,\r
- (void *)&UnixIo,\r
- This->DriverBindingHandle,\r
- Handle,\r
- EFI_OPEN_PROTOCOL_BY_DRIVER\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- //\r
- // Set DiskType\r
- //\r
- if (!CompareGuid (UnixIo->TypeGuid, &gEfiUnixVirtualDisksGuid)) {\r
- Status = EFI_UNSUPPORTED;\r
- goto Done;\r
- }\r
-\r
- Status = EFI_NOT_FOUND;\r
- // Extract filename.\r
- Str = UnixIo->EnvString;\r
- i = 0;\r
- while (*Str && *Str != ':')\r
- Buffer[i++] = *Str++;\r
- Buffer[i] = 0;\r
- if (*Str != ':') {\r
- goto Done;\r
- }\r
-\r
- Str++;\r
-\r
- RemovableMedia = FALSE;\r
- WriteProtected = TRUE;\r
- NumberOfBlocks = 0;\r
- BlockSize = 512;\r
- do {\r
- if (*Str == 'R' || *Str == 'F') {\r
- RemovableMedia = (BOOLEAN) (*Str == 'R');\r
- Str++;\r
- }\r
- if (*Str == 'O' || *Str == 'W') {\r
- WriteProtected = (BOOLEAN) (*Str == 'O');\r
- Str++;\r
- }\r
- if (*Str == 0)\r
- break;\r
- if (*Str != ';')\r
- goto Done;\r
- Str++;\r
-\r
- NumberOfBlocks = Atoi (Str);\r
- Str = GetNextElementPastTerminator (Str, ';');\r
- if (NumberOfBlocks == 0)\r
- break;\r
-\r
- BlockSize = Atoi (Str);\r
- if (BlockSize != 0)\r
- Str = GetNextElementPastTerminator (Str, ';');\r
- } while (0);\r
-\r
- //\r
- // If we get here the variable is valid so do the work.\r
- //\r
- Status = UnixBlockIoCreateMapping (\r
- UnixIo,\r
- Handle,\r
- Buffer,\r
- WriteProtected,\r
- RemovableMedia,\r
- NumberOfBlocks,\r
- BlockSize\r
- );\r
-\r
-Done:\r
- if (EFI_ERROR (Status)) {\r
- gBS->CloseProtocol (\r
- Handle,\r
- &gEfiUnixIoProtocolGuid,\r
- This->DriverBindingHandle,\r
- Handle\r
- );\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoDriverBindingStop (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Handle,\r
- IN UINTN NumberOfChildren,\r
- IN EFI_HANDLE *ChildHandleBuffer\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- This - TODO: add argument description\r
- Handle - TODO: add argument description\r
- NumberOfChildren - TODO: add argument description\r
- ChildHandleBuffer - TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_UNSUPPORTED - TODO: Add description for return value\r
-\r
---*/\r
-{\r
- EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
- EFI_STATUS Status;\r
- UNIX_BLOCK_IO_PRIVATE *Private;\r
-\r
- //\r
- // Get our context back\r
- //\r
- Status = gBS->OpenProtocol (\r
- Handle,\r
- &gEfiBlockIoProtocolGuid,\r
- (void *)&BlockIo,\r
- This->DriverBindingHandle,\r
- Handle,\r
- EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (BlockIo);\r
-\r
- //\r
- // BugBug: If we need to kick people off, we need to make Uninstall Close the handles.\r
- // We could pass in our image handle or FLAG our open to be closed via\r
- // Unistall (== to saying any CloseProtocol will close our open)\r
- //\r
- Status = gBS->UninstallMultipleProtocolInterfaces (\r
- Private->EfiHandle,\r
- &gEfiBlockIoProtocolGuid,\r
- &Private->BlockIo,\r
- NULL\r
- );\r
- if (!EFI_ERROR (Status)) {\r
-\r
- Status = gBS->CloseProtocol (\r
- Handle,\r
- &gEfiUnixIoProtocolGuid,\r
- This->DriverBindingHandle,\r
- Handle\r
- );\r
-\r
- //\r
- // Shut down our device\r
- //\r
- Private->UnixThunk->Close (Private->fd);\r
-\r
- //\r
- // Free our instance data\r
- //\r
- FreeUnicodeStringTable (Private->ControllerNameTable);\r
-\r
- gBS->FreePool (Private);\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-CHAR16 *\r
-GetNextElementPastTerminator (\r
- IN CHAR16 *EnvironmentVariable,\r
- IN CHAR16 Terminator\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Worker function to parse environment variables.\r
-\r
-Arguments:\r
- EnvironmentVariable - Envirnment variable to parse.\r
-\r
- Terminator - Terminator to parse for.\r
-\r
-Returns: \r
-\r
- Pointer to next eliment past the first occurence of Terminator or the '\0'\r
- at the end of the string.\r
-\r
---*/\r
-{\r
- CHAR16 *Ptr;\r
-\r
- for (Ptr = EnvironmentVariable; *Ptr != '\0'; Ptr++) {\r
- if (*Ptr == Terminator) {\r
- Ptr++;\r
- break;\r
- }\r
- }\r
-\r
- return Ptr;\r
-}\r
-\r
-EFI_STATUS\r
-UnixBlockIoCreateMapping (\r
- IN EFI_UNIX_IO_PROTOCOL *UnixIo,\r
- IN EFI_HANDLE EfiDeviceHandle,\r
- IN CHAR16 *Filename,\r
- IN BOOLEAN ReadOnly,\r
- IN BOOLEAN RemovableMedia,\r
- IN UINTN NumberOfBlocks,\r
- IN UINTN BlockSize\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- UnixIo - TODO: add argument description\r
- EfiDeviceHandle - TODO: add argument description\r
- Filename - TODO: add argument description\r
- ReadOnly - TODO: add argument description\r
- RemovableMedia - TODO: add argument description\r
- NumberOfBlocks - TODO: add argument description\r
- BlockSize - TODO: add argument description\r
- DeviceType - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-{\r
- EFI_STATUS Status;\r
- EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
- UNIX_BLOCK_IO_PRIVATE *Private;\r
- UINTN Index;\r
-\r
- Status = gBS->AllocatePool (\r
- EfiBootServicesData,\r
- sizeof (UNIX_BLOCK_IO_PRIVATE),\r
- (void *)&Private\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- EfiInitializeLock (&Private->Lock, TPL_NOTIFY);\r
-\r
- Private->UnixThunk = UnixIo->UnixThunk;\r
-\r
- Private->Signature = UNIX_BLOCK_IO_PRIVATE_SIGNATURE;\r
- Private->LastBlock = NumberOfBlocks - 1;\r
- Private->BlockSize = BlockSize;\r
-\r
- for (Index = 0; Filename[Index] != 0; Index++) {\r
- Private->Filename[Index] = Filename[Index];\r
- }\r
-\r
- Private->Filename[Index] = 0;\r
-\r
- Private->Mode = (ReadOnly ? O_RDONLY : O_RDWR);\r
-\r
- Private->NumberOfBlocks = NumberOfBlocks;\r
- Private->fd = -1;\r
-\r
- Private->ControllerNameTable = NULL;\r
-\r
- AddUnicodeString (\r
- "eng",\r
- gUnixBlockIoComponentName.SupportedLanguages,\r
- &Private->ControllerNameTable,\r
- Filename\r
- );\r
-\r
- BlockIo = &Private->BlockIo;\r
- BlockIo->Revision = EFI_BLOCK_IO_PROTOCOL_REVISION;\r
- BlockIo->Media = &Private->Media;\r
- BlockIo->Media->BlockSize = Private->BlockSize;\r
- BlockIo->Media->LastBlock = Private->NumberOfBlocks - 1;\r
- BlockIo->Media->MediaId = 0;;\r
-\r
- BlockIo->Reset = UnixBlockIoResetBlock;\r
- BlockIo->ReadBlocks = UnixBlockIoReadBlocks;\r
- BlockIo->WriteBlocks = UnixBlockIoWriteBlocks;\r
- BlockIo->FlushBlocks = UnixBlockIoFlushBlocks;\r
-\r
- BlockIo->Media->ReadOnly = ReadOnly;\r
- BlockIo->Media->RemovableMedia = RemovableMedia;\r
- BlockIo->Media->LogicalPartition = FALSE;\r
- BlockIo->Media->MediaPresent = TRUE;\r
- BlockIo->Media->WriteCaching = FALSE;\r
-\r
- BlockIo->Media->IoAlign = 1;\r
-\r
- Private->EfiHandle = EfiDeviceHandle;\r
- Status = UnixBlockIoOpenDevice (Private);\r
- if (!EFI_ERROR (Status)) {\r
-\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &Private->EfiHandle,\r
- &gEfiBlockIoProtocolGuid,\r
- &Private->BlockIo,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- FreeUnicodeStringTable (Private->ControllerNameTable);\r
- gBS->FreePool (Private);\r
- }\r
-\r
- DEBUG ((EFI_D_ERROR, "BlockDevice added: %s\n", Filename));\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-EFI_STATUS\r
-UnixBlockIoOpenDevice (\r
- UNIX_BLOCK_IO_PRIVATE *Private\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- Private - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-{\r
- EFI_STATUS Status;\r
- UINT64 FileSize;\r
- UINT64 EndOfFile;\r
- EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
-\r
- BlockIo = &Private->BlockIo;\r
- EfiAcquireLock (&Private->Lock);\r
-\r
- //\r
- // If the device is already opened, close it\r
- //\r
- if (Private->fd >= 0) {\r
- BlockIo->Reset (BlockIo, FALSE);\r
- }\r
-\r
- //\r
- // Open the device\r
- //\r
- Private->fd = Private->UnixThunk->Open (Private->Filename, Private->Mode, 0644);\r
- if (Private->fd < 0) {\r
- DEBUG ((EFI_D_INFO, "PlOpenBlock: Could not open %a\n", Private->Filename));\r
- BlockIo->Media->MediaPresent = FALSE;\r
- Status = EFI_NO_MEDIA;\r
- goto Done;\r
- }\r
-\r
- if (!BlockIo->Media->MediaPresent) {\r
- //\r
- // BugBug: try to emulate if a CD appears - notify drivers to check it out\r
- //\r
- BlockIo->Media->MediaPresent = TRUE;\r
- EfiReleaseLock (&Private->Lock);\r
- EfiAcquireLock (&Private->Lock);\r
- }\r
-\r
- //\r
- // get the size of the file\r
- //\r
- Status = SetFilePointer64 (Private, 0, &FileSize, SEEK_END);\r
- if (EFI_ERROR (Status)) {\r
- FileSize = MultU64x32 (Private->NumberOfBlocks, Private->BlockSize);\r
- DEBUG ((EFI_D_ERROR, "PlOpenBlock: Could not get filesize of %a\n", Private->Filename));\r
- Status = EFI_UNSUPPORTED;\r
- goto Done;\r
- }\r
-\r
- if (Private->NumberOfBlocks == 0) {\r
- Private->NumberOfBlocks = DivU64x32 (FileSize, Private->BlockSize);\r
- Private->LastBlock = Private->NumberOfBlocks - 1;\r
- Private->Media.LastBlock = Private->LastBlock;\r
- }\r
-\r
- EndOfFile = MultU64x32 (Private->NumberOfBlocks, Private->BlockSize);\r
-\r
- if (FileSize != EndOfFile) {\r
- //\r
- // file is not the proper size, change it\r
- //\r
- DEBUG ((EFI_D_INIT, "PlOpenBlock: Initializing block device: %a\n", Private->Filename));\r
-\r
- //\r
- // first set it to 0\r
- //\r
- Private->UnixThunk->FTruncate (Private->fd, 0);\r
-\r
- //\r
- // then set it to the needed file size (OS will zero fill it)\r
- //\r
- Private->UnixThunk->FTruncate (Private->fd, EndOfFile);\r
- }\r
-\r
- DEBUG ((EFI_D_INIT, "%HPlOpenBlock: opened %a%N\n", Private->Filename));\r
- Status = EFI_SUCCESS;\r
-\r
-Done:\r
- if (EFI_ERROR (Status)) {\r
- if (Private->fd >= 0) {\r
- BlockIo->Reset (BlockIo, FALSE);\r
- }\r
- }\r
-\r
- EfiReleaseLock (&Private->Lock);\r
- return Status;\r
-}\r
-\r
-EFI_STATUS\r
-UnixBlockIoError (\r
- IN UNIX_BLOCK_IO_PRIVATE *Private\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- Private - TODO: add argument description\r
-\r
-Returns:\r
-\r
- TODO: add return values\r
-\r
---*/\r
-{\r
- return EFI_DEVICE_ERROR;\r
-\r
-#if 0\r
- EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
- EFI_STATUS Status;\r
- BOOLEAN ReinstallBlockIoFlag;\r
-\r
-\r
- BlockIo = &Private->BlockIo;\r
-\r
- switch (Private->UnixThunk->GetLastError ()) {\r
-\r
- case ERROR_NOT_READY:\r
- Status = EFI_NO_MEDIA;\r
- BlockIo->Media->ReadOnly = FALSE;\r
- BlockIo->Media->MediaPresent = FALSE;\r
- ReinstallBlockIoFlag = FALSE;\r
- break;\r
-\r
- case ERROR_WRONG_DISK:\r
- BlockIo->Media->ReadOnly = FALSE;\r
- BlockIo->Media->MediaPresent = TRUE;\r
- BlockIo->Media->MediaId += 1;\r
- ReinstallBlockIoFlag = TRUE;\r
- Status = EFI_MEDIA_CHANGED;\r
- break;\r
-\r
- case ERROR_WRITE_PROTECT:\r
- BlockIo->Media->ReadOnly = TRUE;\r
- ReinstallBlockIoFlag = FALSE;\r
- Status = EFI_WRITE_PROTECTED;\r
- break;\r
-\r
- default:\r
- ReinstallBlockIoFlag = FALSE;\r
- Status = EFI_DEVICE_ERROR;\r
- break;\r
- }\r
-\r
- if (ReinstallBlockIoFlag) {\r
- BlockIo->Reset (BlockIo, FALSE);\r
-\r
- gBS->ReinstallProtocolInterface (\r
- Private->EfiHandle,\r
- &gEfiBlockIoProtocolGuid,\r
- BlockIo,\r
- BlockIo\r
- );\r
- }\r
-\r
- return Status;\r
-#endif\r
-}\r
-\r
-EFI_STATUS\r
-UnixBlockIoReadWriteCommon (\r
- IN UNIX_BLOCK_IO_PRIVATE *Private,\r
- IN UINT32 MediaId,\r
- IN EFI_LBA Lba,\r
- IN UINTN BufferSize,\r
- IN VOID *Buffer,\r
- IN CHAR8 *CallerName\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- TODO: Add function description\r
-\r
-Arguments:\r
-\r
- Private - TODO: add argument description\r
- MediaId - TODO: add argument description\r
- Lba - TODO: add argument description\r
- BufferSize - TODO: add argument description\r
- Buffer - TODO: add argument description\r
- CallerName - TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_NO_MEDIA - TODO: Add description for return value\r
- EFI_MEDIA_CHANGED - TODO: Add description for return value\r
- EFI_INVALID_PARAMETER - TODO: Add description for return value\r
- EFI_SUCCESS - TODO: Add description for return value\r
- EFI_BAD_BUFFER_SIZE - TODO: Add description for return value\r
- EFI_INVALID_PARAMETER - TODO: Add description for return value\r
- EFI_SUCCESS - TODO: Add description for return value\r
-\r
---*/\r
-{\r
- EFI_STATUS Status;\r
- UINTN BlockSize;\r
- UINT64 LastBlock;\r
- INT64 DistanceToMove;\r
- UINT64 DistanceMoved;\r
-\r
- if (Private->fd < 0) {\r
- Status = UnixBlockIoOpenDevice (Private);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- }\r
-\r
- if (!Private->Media.MediaPresent) {\r
- DEBUG ((EFI_D_INIT, "%s: No Media\n", CallerName));\r
- return EFI_NO_MEDIA;\r
- }\r
-\r
- if (Private->Media.MediaId != MediaId) {\r
- return EFI_MEDIA_CHANGED;\r
- }\r
-\r
- if ((UINTN) Buffer % Private->Media.IoAlign != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- \r
- //\r
- // Verify buffer size\r
- //\r
- BlockSize = Private->BlockSize;\r
- if (BufferSize == 0) {\r
- DEBUG ((EFI_D_INIT, "%s: Zero length read\n", CallerName));\r
- return EFI_SUCCESS;\r
- }\r
-\r
- if ((BufferSize % BlockSize) != 0) {\r
- DEBUG ((EFI_D_INIT, "%s: Invalid read size\n", CallerName));\r
- return EFI_BAD_BUFFER_SIZE;\r
- }\r
-\r
- LastBlock = Lba + (BufferSize / BlockSize) - 1;\r
- if (LastBlock > Private->LastBlock) {\r
- DEBUG ((EFI_D_INIT, "ReadBlocks: Attempted to read off end of device\n"));\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Seek to End of File\r
- //\r
- DistanceToMove = MultU64x32 (Lba, BlockSize);\r
- Status = SetFilePointer64 (Private, DistanceToMove, &DistanceMoved, SEEK_SET);\r
-\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_INIT, "WriteBlocks: SetFilePointer failed\n"));\r
- return UnixBlockIoError (Private);\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoReadBlocks (\r
- IN EFI_BLOCK_IO_PROTOCOL *This,\r
- IN UINT32 MediaId,\r
- IN EFI_LBA Lba,\r
- IN UINTN BufferSize,\r
- OUT VOID *Buffer\r
- )\r
-/*++\r
-\r
- Routine Description:\r
- Read BufferSize bytes from Lba into Buffer.\r
-\r
- Arguments:\r
- This - Protocol instance pointer.\r
- MediaId - Id of the media, changes every time the media is replaced.\r
- Lba - The starting Logical Block Address to read from\r
- BufferSize - Size of Buffer, must be a multiple of device block size.\r
- Buffer - Buffer containing read data\r
-\r
- Returns:\r
- EFI_SUCCESS - The data was read correctly from the device.\r
- EFI_DEVICE_ERROR - The device reported an error while performing the read.\r
- EFI_NO_MEDIA - There is no media in the device.\r
- EFI_MEDIA_CHANGED - The MediaId does not matched the current device.\r
- EFI_BAD_BUFFER_SIZE - The Buffer was not a multiple of the block size of the \r
- device.\r
- EFI_INVALID_PARAMETER - The read request contains device addresses that are not \r
- valid for the device.\r
-\r
---*/\r
-{\r
- UNIX_BLOCK_IO_PRIVATE *Private;\r
- ssize_t len;\r
- EFI_STATUS Status;\r
- EFI_TPL OldTpl;\r
-\r
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
-\r
- Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r
-\r
- Status = UnixBlockIoReadWriteCommon (Private, MediaId, Lba, BufferSize, Buffer, "UnixReadBlocks");\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- len = Private->UnixThunk->Read (Private->fd, Buffer, BufferSize);\r
- if (len != BufferSize) {\r
- DEBUG ((EFI_D_INIT, "ReadBlocks: ReadFile failed.\n"));\r
- Status = UnixBlockIoError (Private);\r
- goto Done;\r
- }\r
-\r
- //\r
- // If we wrote then media is present.\r
- //\r
- This->Media->MediaPresent = TRUE;\r
- Status = EFI_SUCCESS;\r
-\r
-Done:\r
- gBS->RestoreTPL (OldTpl);\r
- return Status;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoWriteBlocks (\r
- IN EFI_BLOCK_IO_PROTOCOL *This,\r
- IN UINT32 MediaId,\r
- IN EFI_LBA Lba,\r
- IN UINTN BufferSize,\r
- IN VOID *Buffer\r
- )\r
-/*++\r
-\r
- Routine Description:\r
- Write BufferSize bytes from Lba into Buffer.\r
-\r
- Arguments:\r
- This - Protocol instance pointer.\r
- MediaId - Id of the media, changes every time the media is replaced.\r
- Lba - The starting Logical Block Address to read from\r
- BufferSize - Size of Buffer, must be a multiple of device block size.\r
- Buffer - Buffer containing read data\r
-\r
- Returns:\r
- EFI_SUCCESS - The data was written correctly to the device.\r
- EFI_WRITE_PROTECTED - The device can not be written to.\r
- EFI_DEVICE_ERROR - The device reported an error while performing the write.\r
- EFI_NO_MEDIA - There is no media in the device.\r
- EFI_MEDIA_CHNAGED - The MediaId does not matched the current device.\r
- EFI_BAD_BUFFER_SIZE - The Buffer was not a multiple of the block size of the \r
- device.\r
- EFI_INVALID_PARAMETER - The write request contains a LBA that is not \r
- valid for the device.\r
-\r
---*/\r
-{\r
- UNIX_BLOCK_IO_PRIVATE *Private;\r
- ssize_t len;\r
- EFI_STATUS Status;\r
- EFI_TPL OldTpl;\r
-\r
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
-\r
- Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r
-\r
- Status = UnixBlockIoReadWriteCommon (Private, MediaId, Lba, BufferSize, Buffer, "UnixWriteBlocks");\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- len = Private->UnixThunk->Write (Private->fd, Buffer, BufferSize);\r
- if (len != BufferSize) {\r
- DEBUG ((EFI_D_INIT, "ReadBlocks: WriteFile failed.\n"));\r
- Status = UnixBlockIoError (Private);\r
- goto Done;\r
- }\r
-\r
- //\r
- // If the write succeeded, we are not write protected and media is present.\r
- //\r
- This->Media->MediaPresent = TRUE;\r
- This->Media->ReadOnly = FALSE;\r
- Status = EFI_SUCCESS;\r
-\r
-Done:\r
- gBS->RestoreTPL (OldTpl);\r
- return Status;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoFlushBlocks (\r
- IN EFI_BLOCK_IO_PROTOCOL *This\r
- )\r
-/*++\r
-\r
- Routine Description:\r
- Flush the Block Device.\r
-\r
- Arguments:\r
- This - Protocol instance pointer.\r
-\r
- Returns:\r
- EFI_SUCCESS - All outstanding data was written to the device\r
- EFI_DEVICE_ERROR - The device reported an error while writting back the data\r
- EFI_NO_MEDIA - There is no media in the device.\r
-\r
---*/\r
-{\r
- return EFI_SUCCESS;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-UnixBlockIoResetBlock (\r
- IN EFI_BLOCK_IO_PROTOCOL *This,\r
- IN BOOLEAN ExtendedVerification\r
- )\r
-/*++\r
-\r
- Routine Description:\r
- Reset the Block Device.\r
-\r
- Arguments:\r
- This - Protocol instance pointer.\r
- ExtendedVerification - Driver may perform diagnostics on reset.\r
-\r
- Returns:\r
- EFI_SUCCESS - The device was reset.\r
- EFI_DEVICE_ERROR - The device is not functioning properly and could \r
- not be reset.\r
-\r
---*/\r
-{\r
- UNIX_BLOCK_IO_PRIVATE *Private;\r
- EFI_TPL OldTpl;\r
-\r
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
- \r
- Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r
-\r
- if (Private->fd >= 0) {\r
- Private->UnixThunk->Close (Private->fd);\r
- Private->fd = -1;\r
- }\r
-\r
- gBS->RestoreTPL (OldTpl);\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-UINTN\r
-Atoi (\r
- CHAR16 *String\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Convert a unicode string to a UINTN\r
-\r
-Arguments:\r
-\r
- String - Unicode string.\r
-\r
-Returns: \r
-\r
- UINTN of the number represented by String. \r
-\r
---*/\r
-{\r
- UINTN Number;\r
- CHAR16 *Str;\r
-\r
- //\r
- // skip preceeding white space\r
- //\r
- Str = String;\r
- while ((*Str) && (*Str == ' ')) {\r
- Str++;\r
- }\r
- //\r
- // Convert ot a Number\r
- //\r
- Number = 0;\r
- while (*Str != '\0') {\r
- if ((*Str >= '0') && (*Str <= '9')) {\r
- Number = (Number * 10) +*Str - '0';\r
- } else {\r
- break;\r
- }\r
-\r
- Str++;\r
- }\r
-\r
- return Number;\r
-}\r
-\r
-EFI_STATUS\r
-SetFilePointer64 (\r
- IN UNIX_BLOCK_IO_PRIVATE *Private,\r
- IN INT64 DistanceToMove,\r
- OUT UINT64 *NewFilePointer,\r
- IN INT32 MoveMethod\r
- )\r
-/*++\r
-\r
-This function extends the capability of SetFilePointer to accept 64 bit parameters\r
-\r
---*/\r
-// TODO: function comment is missing 'Routine Description:'\r
-// TODO: function comment is missing 'Arguments:'\r
-// TODO: function comment is missing 'Returns:'\r
-// TODO: Private - add argument and description to function comment\r
-// TODO: DistanceToMove - add argument and description to function comment\r
-// TODO: NewFilePointer - add argument and description to function comment\r
-// TODO: MoveMethod - add argument and description to function comment\r
-{\r
- EFI_STATUS Status;\r
- off_t res;\r
-\r
- Status = EFI_SUCCESS;\r
- res = Private->UnixThunk->Lseek(Private->fd, DistanceToMove, MoveMethod);\r
- if (res == -1) {\r
- Status = EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (NewFilePointer != NULL) {\r
- *NewFilePointer = res;\r
- }\r
-\r
- return Status;\r
-}\r
projects / mirror_edk2.git / blobdiff