/** @file\r
Provides interface to EFI_FILE_HANDLE functionality.\r
\r
- Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2009 - 2011, 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
\r
/// The tag for use in identifying UNICODE files.\r
/// If the file is UNICODE, the first 16 bits of the file will equal this value.\r
-enum {\r
- UnicodeFileTag = 0xFEFF\r
-};\r
+extern CONST UINT16 gUnicodeFileTag;\r
\r
/**\r
This function retrieves information about the file for the handle\r
\r
@param[in] FileInfo The information to set.\r
\r
- @retval EFI_SUCCESS The information was set.\r
+ @retval EFI_SUCCESS The information was set.\r
@retval EFI_INVALID_PARAMETER A parameter was out of range or invalid.\r
@retval EFI_UNSUPPORTED The FileHandle does not support FileInfo.\r
- @retval EFI_NO_MEDIA The device has no medium.\r
- @retval EFI_DEVICE_ERROR The device reported an error.\r
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r
- @retval EFI_WRITE_PROTECTED The file or medium is write protected.\r
+ @retval EFI_NO_MEDIA The device has no medium.\r
+ @retval EFI_DEVICE_ERROR The device reported an error.\r
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r
+ @retval EFI_WRITE_PROTECTED The file or medium is write protected.\r
@retval EFI_ACCESS_DENIED The file was opened read only.\r
@retval EFI_VOLUME_FULL The volume is full.\r
**/\r
EFI_STATUS\r
EFIAPI\r
FileHandleSetInfo (\r
- IN EFI_FILE_HANDLE FileHandle,\r
+ IN EFI_FILE_HANDLE FileHandle,\r
IN CONST EFI_FILE_INFO *FileInfo\r
);\r
\r
are no more directory entries, the read returns a zero-length buffer.\r
EFI_FILE_INFO is the structure returned as the directory entry.\r
\r
- @param[in] FileHandle The opened file handle.\r
- @param[in,out] BufferSize On input, the size of buffer in bytes. On return,\r
- the number of bytes written.\r
- @param[out] Buffer The buffer to put read data into.\r
+ @param[in] FileHandle The opened file handle.\r
+ @param[in, out] BufferSize On input, the size of buffer in bytes. On return,\r
+ the number of bytes written.\r
+ @param[out] Buffer The buffer to put read data into.\r
\r
- @retval EFI_SUCCESS Data was read.\r
- @retval EFI_NO_MEDIA The device has no media.\r
- @retval EFI_DEVICE_ERROR The device reported an error.\r
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r
- @retval EFI_BUFFER_TO_SMALL Buffer is too small. ReadSize contains required\r
+ @retval EFI_SUCCESS Data was read.\r
+ @retval EFI_NO_MEDIA The device has no media.\r
+ @retval EFI_DEVICE_ERROR The device reported an error.\r
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r
+ @retval EFI_BUFFER_TO_SMALL Buffer is too small. ReadSize contains required\r
size.\r
\r
**/\r
The file is automatically grown to hold the data if required. Direct writes to\r
opened directories are not supported.\r
\r
- @param[in] FileHandle The opened file for writing.\r
- @param[in,out] BufferSize On input, the number of bytes in Buffer. On output,\r
- the number of bytes written.\r
- @param[in] Buffer The buffer containing data to write is stored.\r
+ @param[in] FileHandle The opened file for writing.\r
+ @param[in, out] BufferSize On input, the number of bytes in Buffer. On output,\r
+ the number of bytes written.\r
+ @param[in] Buffer The buffer containing data to write is stored.\r
\r
- @retval EFI_SUCCESS Data was written.\r
+ @retval EFI_SUCCESS Data was written.\r
@retval EFI_UNSUPPORTED Writes to an open directory are not supported.\r
- @retval EFI_NO_MEDIA The device has no media.\r
- @retval EFI_DEVICE_ERROR The device reported an error.\r
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r
- @retval EFI_WRITE_PROTECTED The device is write-protected.\r
- @retval EFI_ACCESS_DENIED The file was opened for read only.\r
- @retval EFI_VOLUME_FULL The volume is full.\r
+ @retval EFI_NO_MEDIA The device has no media.\r
+ @retval EFI_DEVICE_ERROR The device reported an error.\r
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r
+ @retval EFI_WRITE_PROTECTED The device is write-protected.\r
+ @retval EFI_ACCESS_DENIED The file was opened for read only.\r
+ @retval EFI_VOLUME_FULL The volume is full.\r
**/\r
EFI_STATUS\r
EFIAPI\r
@retval EFI_SUCCESS The file was closed successfully.\r
@retval EFI_WARN_DELETE_FAILURE The handle was closed, but the file was not\r
deleted.\r
- @retval INVALID_PARAMETER One of the parameters has an invalid value.\r
+ @retval INVALID_PARAMETER One of the parameters has an invalid value.\r
**/\r
EFI_STATUS\r
EFIAPI\r
FileHandleDelete (\r
- IN EFI_FILE_HANDLE FileHandle\r
+ IN EFI_FILE_HANDLE FileHandle\r
);\r
\r
/**\r
EFI_STATUS\r
EFIAPI\r
FileHandleSetPosition (\r
- IN EFI_FILE_HANDLE FileHandle,\r
- IN UINT64 Position\r
+ IN EFI_FILE_HANDLE FileHandle,\r
+ IN UINT64 Position\r
);\r
\r
/**\r
IN EFI_FILE_HANDLE DirHandle\r
);\r
\r
-/**\r
- Retrieves the first file from a directory.\r
+/** Retrieve first entry from a directory.\r
\r
- This function opens a directory and gets the first file's information in the\r
- directory. The caller the uses FileHandleFindNextFile() to get other files. When\r
- complete, the caller is responsible for calling FreePool() on *Buffer.\r
+ This function takes an open directory handle and gets information from the\r
+ first entry in the directory. A buffer is allocated to contain\r
+ the information and a pointer to the buffer is returned in *Buffer. The\r
+ caller can use FileHandleFindNextFile() to get subsequent directory entries.\r
\r
- @param[in] DirHandle The file handle of the directory to search.\r
+ The buffer will be freed by FileHandleFindNextFile() when the last directory\r
+ entry is read. Otherwise, the caller must free the buffer, using FreePool,\r
+ when finished with it.\r
+\r
+ @param[in] DirHandle The file handle of the directory to search.\r
@param[out] Buffer The pointer to pointer to buffer for file's information.\r
\r
@retval EFI_SUCCESS Found the first file.\r
IN EFI_FILE_HANDLE DirHandle,\r
OUT EFI_FILE_INFO **Buffer\r
);\r
-/**\r
- Retrieves the next file in a directory.\r
\r
- To use this function, caller must call the FileHandleFindFirstFile() to get the\r
- first file, and then use this function get other files. This function can be\r
- called for several times to get each file's information in the directory. If\r
- the call of FileHandleFindNextFile() got the last file in the directory, the next\r
- call of this function has no file to get. *NoFile will be set to TRUE and the\r
- Buffer memory will be automatically freed.\r
+/** Retrieve next entries from a directory.\r
+\r
+ To use this function, the caller must first call the FileHandleFindFirstFile()\r
+ function to get the first directory entry. Subsequent directory entries are\r
+ retrieved by using the FileHandleFindNextFile() function. This function can\r
+ be called several times to get each entry from the directory. If the call of\r
+ FileHandleFindNextFile() retrieved the last directory entry, the next call of\r
+ this function will set *NoFile to TRUE and free the buffer.\r
\r
- @param[in] DirHandle The file handle of the directory.\r
+ @param[in] DirHandle The file handle of the directory.\r
@param[out] Buffer The pointer to buffer for file's information.\r
@param[out] NoFile The pointer to boolean when last file is found.\r
\r
If the position upon start is 0, then the Ascii Boolean will be set. This should be\r
maintained and not changed for all operations with the same file.\r
\r
- @param[in] Handle FileHandle to read from.\r
- @param[in,out] Buffer The pointer to buffer to read into.\r
- @param[in,out] Size The pointer to number of bytes in Buffer.\r
- @param[in] Truncate If the buffer is large enough, this has no effect.\r
- If the buffer is is too small and Truncate is TRUE,\r
- the line will be truncated.\r
- If the buffer is is too small and Truncate is FALSE,\r
- then no read will occur.\r
+ @param[in] Handle FileHandle to read from.\r
+ @param[in, out] Buffer The pointer to buffer to read into.\r
+ @param[in, out] Size The pointer to number of bytes in Buffer.\r
+ @param[in] Truncate If the buffer is large enough, this has no effect.\r
+ If the buffer is is too small and Truncate is TRUE,\r
+ the line will be truncated.\r
+ If the buffer is is too small and Truncate is FALSE,\r
+ then no read will occur.\r
\r
- @param[in,out] Ascii Boolean value for indicating whether the file is\r
- Ascii (TRUE) or UCS2 (FALSE).\r
+ @param[in, out] Ascii Boolean value for indicating whether the file is\r
+ Ascii (TRUE) or UCS2 (FALSE).\r
\r
@retval EFI_SUCCESS The operation was successful. The line is stored in\r
Buffer.\r
If the position upon start is 0, then the Ascii Boolean will be set. This should be\r
maintained and not changed for all operations with the same file.\r
\r
- @param[in] Handle FileHandle to read from.\r
- @param[in,out] Ascii Boolean value for indicating whether the file is\r
- Ascii (TRUE) or UCS2 (FALSE).\r
+ @param[in] Handle FileHandle to read from.\r
+ @param[in, out] Ascii Boolean value for indicating whether the file is\r
+ Ascii (TRUE) or UCS2 (FALSE).\r
\r
@return The line of text from the file.\r
\r
projects / mirror_edk2.git / blobdiff