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Fix "long double" handling and differences between MSFT and GCC compilers. Fix compliance issues with ISO/IEC 9899:199409 New Function declarations: setenv(), fparseln(), GetFileNameFromPath(), rename() git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12060 6f19259b-4bc3-4df7-8a09-765794883524
217 lines
8.7 KiB
C
217 lines
8.7 KiB
C
/** @file
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Device Abstraction Utility Routines
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Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Depends upon: <kfile.h>
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**/
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#ifndef __DEV_UTILITY_H__
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#define __DEV_UTILITY_H__
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#define CON_COOKIE 0x62416F49 ///< 'IoAb'
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typedef enum {
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PathAbsolute = 0,
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PathRelative,
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PathMapping,
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PathError
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} PATH_CLASS;
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typedef struct _Device_Node {
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LIST_ENTRY DevList; ///< List of registered device abstractions
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const CHAR16 *DevName;
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const GUID *DevProto;
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void *InstanceList; ///< Array of instances for this device
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FO_OPEN OpenFunc;
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UINT32 InstanceSize; ///< Size of each instance in the InstanceList
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UINT32 NumInstances; ///< Number of instances in InstanceList
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UINT32 OpModes; ///< Supported modes of operation
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} DeviceNode;
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__BEGIN_DECLS
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extern LIST_ENTRY daDeviceList; ///< List of registered devices.
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extern DeviceNode *daDefaultDevice; ///< Device to use if nothing else found
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extern DeviceNode *daRootDevice; ///< Device containing the root file system
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extern DeviceNode *daCurrentDevice; ///< Device currently being accessed
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/** Add a new device to the device list.
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@param DevName Name of the device to add.
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@param DevProto Pointer to the GUID identifying the protocol associated with this device.
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If DevProto is NULL, startup code will not try to find instances
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of this device.
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@param OpenFunc Pointer to the device's Open function.
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@param InstanceList Optional pointer to the device's initialized instance list.
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If InstanceList is NULL, the application startup code will
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scan for instances of the protocol identified by DevProto and
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populate the InstanceList in the order those protocols are found.
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@param NumInstance Number of instances in InstanceList.
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@param Modes Bit-mapped flags indicating operations (R, W, RW, ...) permitted to this device.
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**/
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DeviceNode * EFIAPI __DevRegister( const CHAR16 *DevName, GUID *DevProto, FO_OPEN OpenFunc,
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void *InstanceList, int NumInstance, UINT32 InstanceSize, UINT32 Modes);
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/** Find a DeviceNode matching DevName or DevProto, or both.
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If DevName is NULL, then the device name is not used in the search.
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If DevProto is NULL, then the protocol GUID is not used in the search.
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If both are NULL, then INVALID_PARAMETER is returned.
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If both DevName and DevProto are specified, then both must match.
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If both are specified but only one matches, then DEVICE_ERROR is returned.
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@param DevName Name of the Device Abstraction to find.
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@param DevProto GUID of the Protocol associated with the Device Abstraction.
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@param Node Pointer to the pointer to receive the found Device Node's address.
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@retval RETURN_SUCCESS The desired Device Node was found.
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@retval RETURN_INVALID_PARAMETER Both DevName and DevProto are NULL or Node is NULL.
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@retval RETURN_DEVICE_ERROR One, but not both, of DevNode and DevProto matched.
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**/
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EFI_STATUS EFIAPI __DevSearch( CHAR16 *DevName, GUID *DevProto, DeviceNode **Node);
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/** Identify the type of path pointed to by Path.
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Paths are classified based upon their initial character sequences.
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^\\ Absolute Path
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^\. Relative Path
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^[^:\\]: Mapping Path
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.* Relative Path
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Mapping paths are broken into two parts at the ':'. The part to the left of the ':'
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is the Map Name, pointed to by Path, and the part to the right of the ':' is pointed
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to by NewPath.
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If Path was not a Mapping Path, then NewPath is set to Path.
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@param[in] Path Pointer to the path to be classified.
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@param[out] NewPath Pointer to the path portion of a mapping path.
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@retval PathAbsolute Path is an absolute path. NewPath points to the first '\'.
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@retval PathRelative Path is a relative path. NewPath = Path.
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@retval PathMapping Path is a mapping path. NewPath points to the ':'.
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@retval PathError Path is NULL.
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**/
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PATH_CLASS EFIAPI ClassifyPath(IN wchar_t *Path, OUT wchar_t **NewPath, int * const Length);
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/* Normalize a narrow-character path and produce a wide-character path
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that has forward slashes replaced with backslashes.
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Backslashes are directory separators in UEFI File Paths.
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It is the caller's responsibility to eventually free() the returned buffer.
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@param[in] path A pointer to the narrow-character path to be normalized.
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@return A pointer to a buffer containing the normalized, wide-character, path.
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*/
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wchar_t *
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NormalizePath( const char *path);
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/** Process a MBCS path returning the final absolute path and the target device.
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@param path
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@param FullPath
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@param DevNode
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@retval RETURN_SUCCESS
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@retval RETURN_INVALID_PARAMETER
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@retval RETURN_NOT_FOUND
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**/
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RETURN_STATUS
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EFIAPI
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ParsePath( const char *path, wchar_t **FullPath, DeviceNode **DevNode, int *Which, wchar_t **MapPath);
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/** Process a wide character string representing a Mapping Path and extract the instance number.
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The instance number is the sequence of decimal digits immediately to the left
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of the ":" in the Map Name portion of a Mapping Path.
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This function is called with a pointer to beginning of the Map Name.
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Thus Path[Length] must be a ':' and Path[Length - 1] must be a decimal digit.
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If either of these are not true, an instance value of 0 is returned.
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If Path is NULL, an instance value of 0 is returned.
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@param[in] Path Points to the beginning of a Mapping Path
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@param[in] Length Number of valid characters to the left of the ':'
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@return Returns either 0 or the value of the contiguous digits to the left of the ':'.
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**/
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int
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EFIAPI
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PathInstance( const wchar_t *Path, int length);
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/** Transform a relative path into an absolute path.
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If Path is NULL, return NULL.
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Otherwise, pre-pend the CWD to Path then process the resulting path to:
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- Replace "/./" with "/"
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- Replace "/<dirname>/../" with "/"
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- Do not allow one to back up past the root, "/"
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Also sets the Current Working Device to the Root Device.
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Path must be a previously allocated buffer. PathAdjust will
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allocate a new buffer to hold the results of the transformation
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then free Path. A pointer to the newly allocated buffer is returned.
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@param[in] Path A pointer to the path to be transformed. This buffer
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will always be freed.
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@return A pointer to a buffer containing the transformed path.
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**/
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wchar_t *
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EFIAPI
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PathAdjust(wchar_t *Path);
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/** Replace the leading portion of Path with any aliases.
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Aliases are read from /etc/fstab. If there is an associated device, the
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Current Working Device is set to that device.
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Path must be a previously allocated buffer. PathAlias will
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allocate a new buffer to hold the results of the transformation
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then free Path. A pointer to the newly allocated buffer is returned.
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@param[in] Path A pointer to the original, unaliased, path. This
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buffer is always freed.
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@param[out] Node Filled in with a pointer to the Device Node describing
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the device abstraction associated with this path.
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@return A pointer to a buffer containing the aliased path.
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**/
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wchar_t *
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EFIAPI
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PathAlias(wchar_t *Path, DeviceNode **Node);
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/**
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Parses a normalized wide character path and returns a pointer to the entry
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following the last \. If a \ is not found in the path the return value will
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be the same as the input value. All error conditions return NULL.
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The behavior when passing in a path that has not been normalized is undefined.
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@param Path - A pointer to a wide character string containing a path to a
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directory or a file.
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@return Pointer to the file name or terminal directory. NULL if an error is
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detected.
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**/
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wchar_t *
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EFIAPI
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GetFileNameFromPath(
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const wchar_t *Path
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);
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__END_DECLS
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#endif /* __DEV_UTILITY_H__ */
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