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Update SimpleFileSystem.h to add the asynchronous File IO API definition. 

Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14818 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ruiyu Ni 2013-10-30 03:10:30 +00:00 committed by niruiyu
parent 3f1484f6f7
commit 95d0cb1403
1 changed files with 162 additions and 3 deletions
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165
MdePkg/Include/Protocol/SimpleFileSystem.h
View File

@ -7,7 +7,7 @@
UEFI 2.0 can boot from any valid EFI image contained in a SimpleFileSystem.
Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
@ -190,7 +190,7 @@ EFI_STATUS
@retval EFI_DEVICE_ERROR An attempt was made to read from a deleted file.
@retval EFI_DEVICE_ERROR On entry, the current file position is beyond the end of the file.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_BUFFER_TO_SMALL The BufferSize is too small to read the current directory
@retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory
entry. BufferSize has been updated with the size
needed to complete the request.
@ -363,7 +363,162 @@ EFI_STATUS
IN EFI_FILE_PROTOCOL *This
);
#define EFI_FILE_PROTOCOL_REVISION 0x00010000
typedef struct {
//
// If Event is NULL, then blocking I/O is performed.
// If Event is not NULL and non-blocking I/O is supported, then non-blocking I/O is performed,
// and Event will be signaled when the read request is completed.
// The caller must be prepared to handle the case where the callback associated with Event
// occurs before the original asynchronous I/O request call returns.
//
EFI_EVENT Event;
//
// Defines whether or not the signaled event encountered an error.
//
EFI_STATUS Status;
//
// For OpenEx(): Not Used, ignored.
// For ReadEx(): On input, the size of the Buffer. On output, the amount of data returned in Buffer.
// In both cases, the size is measured in bytes.
// For WriteEx(): On input, the size of the Buffer. On output, the amount of data actually written.
// In both cases, the size is measured in bytes.
// For FlushEx(): Not used, ignored.
//
UINTN BufferSize;
//
// For OpenEx(): Not Used, ignored.
// For ReadEx(): The buffer into which the data is read.
// For WriteEx(): The buffer of data to write.
// For FlushEx(): Not Used, ignored.
//
VOID *Buffer;
} EFI_FILE_IO_TOKEN;
/**
Opens a new file relative to the source directory's location.
@param This A pointer to the EFI_FILE_PROTOCOL instance that is the file
handle to the source location.
@param NewHandle A pointer to the location to return the opened handle for the new
file.
@param FileName The Null-terminated string of the name of the file to be opened.
The file name may contain the following path modifiers: "\", ".",
and "..".
@param OpenMode The mode to open the file. The only valid combinations that the
file may be opened with are: Read, Read/Write, or Create/Read/Write.
@param Attributes Only valid for EFI_FILE_MODE_CREATE, in which case these are the
attribute bits for the newly created file.
@param Token A pointer to the token associated with the transaction.
@retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was read successfully.
If Event is not NULL (asynchronous I/O): The request was successfully
queued for processing.
@retval EFI_NOT_FOUND The specified file could not be found on the device.
@retval EFI_NO_MEDIA The device has no medium.
@retval EFI_MEDIA_CHANGED The device has a different medium in it or the medium is no
longer supported.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_WRITE_PROTECTED An attempt was made to create a file, or open a file for write
when the media is write-protected.
@retval EFI_ACCESS_DENIED The service denied access to the file.
@retval EFI_OUT_OF_RESOURCES Not enough resources were available to open the file.
@retval EFI_VOLUME_FULL The volume is full.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_FILE_OPEN_EX)(
IN EFI_FILE_PROTOCOL *This,
OUT EFI_FILE_PROTOCOL **NewHandle,
IN CHAR16 *FileName,
IN UINT64 OpenMode,
IN UINT64 Attributes,
IN OUT EFI_FILE_IO_TOKEN *Token
);
/**
Reads data from a file.
@param This A pointer to the EFI_FILE_PROTOCOL instance that is the file handle to read data from.
@param Token A pointer to the token associated with the transaction.
@retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was read successfully.
If Event is not NULL (asynchronous I/O): The request was successfully
queued for processing.
@retval EFI_NO_MEDIA The device has no medium.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_DEVICE_ERROR An attempt was made to read from a deleted file.
@retval EFI_DEVICE_ERROR On entry, the current file position is beyond the end of the file.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_OUT_OF_RESOURCES Unable to queue the request due to lack of resources.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_FILE_READ_EX) (
IN EFI_FILE_PROTOCOL *This,
IN OUT EFI_FILE_IO_TOKEN *Token
);
/**
Writes data to a file.
@param This A pointer to the EFI_FILE_PROTOCOL instance that is the file handle to write data to.
@param Token A pointer to the token associated with the transaction.
@retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was read successfully.
If Event is not NULL (asynchronous I/O): The request was successfully
queued for processing.
@retval EFI_UNSUPPORTED Writes to open directory files are not supported.
@retval EFI_NO_MEDIA The device has no medium.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_DEVICE_ERROR An attempt was made to write to a deleted file.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_WRITE_PROTECTED The file or medium is write-protected.
@retval EFI_ACCESS_DENIED The file was opened read only.
@retval EFI_VOLUME_FULL The volume is full.
@retval EFI_OUT_OF_RESOURCES Unable to queue the request due to lack of resources.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_FILE_WRITE_EX) (
IN EFI_FILE_PROTOCOL *This,
IN OUT EFI_FILE_IO_TOKEN *Token
);
/**
Flushes all modified data associated with a file to a device.
@param This A pointer to the EFI_FILE_PROTOCOL instance that is the file
handle to flush.
@param Token A pointer to the token associated with the transaction.
@retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was read successfully.
If Event is not NULL (asynchronous I/O): The request was successfully
queued for processing.
@retval EFI_NO_MEDIA The device has no medium.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_WRITE_PROTECTED The file or medium is write-protected.
@retval EFI_ACCESS_DENIED The file was opened read-only.
@retval EFI_VOLUME_FULL The volume is full.
@retval EFI_OUT_OF_RESOURCES Unable to queue the request due to lack of resources.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_FILE_FLUSH_EX) (
IN EFI_FILE_PROTOCOL *This,
IN OUT EFI_FILE_IO_TOKEN *Token
);
#define EFI_FILE_PROTOCOL_REVISION 0x00010000
#define EFI_FILE_PROTOCOL_REVISION2 0x00020000
//
// Revision defined in EFI1.1.
//
@ -393,6 +548,10 @@ struct _EFI_FILE_PROTOCOL {
EFI_FILE_GET_INFO GetInfo;
EFI_FILE_SET_INFO SetInfo;
EFI_FILE_FLUSH Flush;
EFI_FILE_OPEN_EX OpenEx;
EFI_FILE_READ_EX ReadEx;
EFI_FILE_WRITE_EX WriteEx;
EFI_FILE_FLUSH_EX FlushEx;
};