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ArmPkg/SemihostFs: Implement SetInfo() and handle seeking past the end of a file

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Implement the resizing of the file with SetInfo().
Implement the renaming of a file with SetInfo().
Allow to seek past the end of a file.

The support of file resizing implies a rework of the read, write
and close functions. So does the support of seeking past the end
of a file. That why those two changes are done in the same patch.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Reviewed-By: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16244 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ronald Cron
2014-10-27 10:42:51 +00:00
committed by oliviermartin
parent 11bbc25789
commit daefd574f9
2 changed files with 802 additions and 125 deletions
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168
ArmPkg/Filesystem/SemihostFs/Arm/SemihostFs.h
View File

@@ -57,56 +57,190 @@ FileOpen (
IN UINT64 Attributes
);
/**
Close a specified file handle.
@param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is the file
handle to close.
@retval EFI_SUCCESS The file was closed.
@retval EFI_INVALID_PARAMETER The parameter "This" is NULL.
**/
EFI_STATUS
FileClose (
IN EFI_FILE *File
IN EFI_FILE *This
);
/**
Close and delete a file.
@param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is the file
handle to delete.
@retval EFI_SUCCESS The file was closed and deleted.
@retval EFI_WARN_DELETE_FAILURE The handle was closed, but the file was not deleted.
@retval EFI_INVALID_PARAMETER The parameter "This" is NULL.
**/
EFI_STATUS
FileDelete(
IN EFI_FILE *File
FileDelete (
IN EFI_FILE *This
);
/**
Read data from an open file.
@param[in] This A pointer to the EFI_FILE_PROTOCOL instance that
is the file handle to read data from.
@param[in out] BufferSize 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.
@param[out] Buffer The buffer into which the data is read.
@retval EFI_SUCCESS The data was read.
@retval EFI_DEVICE_ERROR On entry, the current file position is
beyond the end of the file, or the semi-hosting
interface reported an error while performing the
read operation.
@retval EFI_INVALID_PARAMETER The parameter "This" or the parameter "Buffer"
is NULL.
**/
EFI_STATUS
FileRead (
IN EFI_FILE *File,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer
IN EFI_FILE *This,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer
);
/**
Write data to an open file.
@param[in] This A pointer to the EFI_FILE_PROTOCOL instance that
is the file handle to write data to.
@param[in out] BufferSize On input, the size of the Buffer. On output, the
size of the data actually written. In both cases,
the size is measured in bytes.
@param[in] Buffer The buffer of data to write.
@retval EFI_SUCCESS The data was written.
@retval EFI_ACCESS_DENIED Attempt to write into a read only file or
in a file opened in read only mode.
@retval EFI_DEVICE_ERROR The last issued semi-hosting operation failed.
@retval EFI_INVALID_PARAMETER The parameter "This" or the parameter "Buffer"
is NULL.
**/
EFI_STATUS
FileWrite (
IN EFI_FILE *File,
IN EFI_FILE *This,
IN OUT UINTN *BufferSize,
IN VOID *Buffer
);
/**
Return a file's current position.
@param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is
the file handle to get the current position on.
@param[out] Position The address to return the file's current position value.
@retval EFI_SUCCESS The position was returned.
@retval EFI_INVALID_PARAMETER Position is a NULL pointer.
**/
EFI_STATUS
FileGetPosition (
IN EFI_FILE *File,
OUT UINT64 *Position
IN EFI_FILE *File,
OUT UINT64 *Position
);
/**
Set a file's current position.
@param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is
the file handle to set the requested position on.
@param[in] Position The byte position from the start of the file to set.
@retval EFI_SUCCESS The position was set.
@retval EFI_DEVICE_ERROR The semi-hosting positionning operation failed.
@retval EFI_UNSUPPORTED The seek request for nonzero is not valid on open
directories.
**/
EFI_STATUS
FileSetPosition (
IN EFI_FILE *File,
IN UINT64 Position
);
/**
Return information about a file or a file system.
@param[in] This A pointer to the EFI_FILE_PROTOCOL instance that
is the file handle the requested information is for.
@param[in] InformationType The type identifier for the information being requested :
EFI_FILE_INFO_ID or EFI_FILE_SYSTEM_INFO_ID or
EFI_FILE_SYSTEM_VOLUME_LABEL_ID
@param[in out] BufferSize The size, in bytes, of Buffer.
@param[out] Buffer A pointer to the data buffer to return. The type of the
data inside the buffer is indicated by InformationType.
@retval EFI_SUCCESS The information was returned.
@retval EFI_UNSUPPORTED The InformationType is not known.
@retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to return the information.
BufferSize has been updated with the size needed to
complete the request.
@retval EFI_INVALID_PARAMETER The parameter "This" or the parameter "Buffer"
is NULL.
**/
EFI_STATUS
FileGetInfo (
IN EFI_FILE *File,
IN EFI_GUID *InformationType,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer
IN EFI_FILE *This,
IN EFI_GUID *InformationType,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer
);
/**
Set information about a file or a file system.
@param[in] This A pointer to the EFI_FILE_PROTOCOL instance that
is the file handle the information is for.
@param[in] InformationType The type identifier for the information being set :
EFI_FILE_INFO_ID or EFI_FILE_SYSTEM_INFO_ID or
EFI_FILE_SYSTEM_VOLUME_LABEL_ID
@param[in] BufferSize The size, in bytes, of Buffer.
@param[in] Buffer A pointer to the data buffer to write. The type of the
data inside the buffer is indicated by InformationType.
@retval EFI_SUCCESS The information was set.
@retval EFI_UNSUPPORTED The InformationType is not known.
@retval EFI_DEVICE_ERROR The last issued semi-hosting operation failed.
@retval EFI_ACCESS_DENIED An attempt is being made to change the
EFI_FILE_DIRECTORY Attribute.
@retval EFI_ACCESS_DENIED InformationType is EFI_FILE_INFO_ID and
the file is a read-only file or has been
opened in read-only mode and an attempt is
being made to modify a field other than
Attribute.
@retval EFI_ACCESS_DENIED An attempt is made to change the name of a file
to a file that is already present.
@retval EFI_WRITE_PROTECTED An attempt is being made to modify a
read-only attribute.
@retval EFI_BAD_BUFFER_SIZE The size of the buffer is lower than that indicated by
the data inside the buffer.
@retval EFI_OUT_OF_RESOURCES An allocation needed to process the request failed.
@retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.
**/
EFI_STATUS
FileSetInfo (
IN EFI_FILE *File,
IN EFI_GUID *InformationType,
IN UINTN BufferSize,
IN VOID *Buffer
IN EFI_FILE *This,
IN EFI_GUID *InformationType,
IN UINTN BufferSize,
IN VOID *Buffer
);
EFI_STATUS