342 lines
12 KiB
C
342 lines
12 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: nsnames - Name manipulation and search
|
|
* $Revision: 77 $
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp.
|
|
* All rights reserved.
|
|
*
|
|
* 2. License
|
|
*
|
|
* 2.1. This is your license from Intel Corp. under its intellectual property
|
|
* rights. You may have additional license terms from the party that provided
|
|
* you this software, covering your right to use that party's intellectual
|
|
* property rights.
|
|
*
|
|
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
|
|
* copy of the source code appearing in this file ("Covered Code") an
|
|
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
|
|
* base code distributed originally by Intel ("Original Intel Code") to copy,
|
|
* make derivatives, distribute, use and display any portion of the Covered
|
|
* Code in any form, with the right to sublicense such rights; and
|
|
*
|
|
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
|
|
* license (with the right to sublicense), under only those claims of Intel
|
|
* patents that are infringed by the Original Intel Code, to make, use, sell,
|
|
* offer to sell, and import the Covered Code and derivative works thereof
|
|
* solely to the minimum extent necessary to exercise the above copyright
|
|
* license, and in no event shall the patent license extend to any additions
|
|
* to or modifications of the Original Intel Code. No other license or right
|
|
* is granted directly or by implication, estoppel or otherwise;
|
|
*
|
|
* The above copyright and patent license is granted only if the following
|
|
* conditions are met:
|
|
*
|
|
* 3. Conditions
|
|
*
|
|
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
|
|
* Redistribution of source code of any substantial portion of the Covered
|
|
* Code or modification with rights to further distribute source must include
|
|
* the above Copyright Notice, the above License, this list of Conditions,
|
|
* and the following Disclaimer and Export Compliance provision. In addition,
|
|
* Licensee must cause all Covered Code to which Licensee contributes to
|
|
* contain a file documenting the changes Licensee made to create that Covered
|
|
* Code and the date of any change. Licensee must include in that file the
|
|
* documentation of any changes made by any predecessor Licensee. Licensee
|
|
* must include a prominent statement that the modification is derived,
|
|
* directly or indirectly, from Original Intel Code.
|
|
*
|
|
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
|
|
* Redistribution of source code of any substantial portion of the Covered
|
|
* Code or modification without rights to further distribute source must
|
|
* include the following Disclaimer and Export Compliance provision in the
|
|
* documentation and/or other materials provided with distribution. In
|
|
* addition, Licensee may not authorize further sublicense of source of any
|
|
* portion of the Covered Code, and must include terms to the effect that the
|
|
* license from Licensee to its licensee is limited to the intellectual
|
|
* property embodied in the software Licensee provides to its licensee, and
|
|
* not to intellectual property embodied in modifications its licensee may
|
|
* make.
|
|
*
|
|
* 3.3. Redistribution of Executable. Redistribution in executable form of any
|
|
* substantial portion of the Covered Code or modification must reproduce the
|
|
* above Copyright Notice, and the following Disclaimer and Export Compliance
|
|
* provision in the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3.4. Intel retains all right, title, and interest in and to the Original
|
|
* Intel Code.
|
|
*
|
|
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
|
|
* Intel shall be used in advertising or otherwise to promote the sale, use or
|
|
* other dealings in products derived from or relating to the Covered Code
|
|
* without prior written authorization from Intel.
|
|
*
|
|
* 4. Disclaimer and Export Compliance
|
|
*
|
|
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
|
|
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
|
|
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
|
|
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
|
|
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE.
|
|
*
|
|
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
|
|
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
|
|
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
|
|
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
|
|
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
|
|
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
|
|
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
|
|
* LIMITED REMEDY.
|
|
*
|
|
* 4.3. Licensee shall not export, either directly or indirectly, any of this
|
|
* software or system incorporating such software without first obtaining any
|
|
* required license or other approval from the U. S. Department of Commerce or
|
|
* any other agency or department of the United States Government. In the
|
|
* event Licensee exports any such software from the United States or
|
|
* re-exports any such software from a foreign destination, Licensee shall
|
|
* ensure that the distribution and export/re-export of the software is in
|
|
* compliance with all laws, regulations, orders, or other restrictions of the
|
|
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
|
|
* any of its subsidiaries will export/re-export any technical data, process,
|
|
* software, or service, directly or indirectly, to any country for which the
|
|
* United States government or any agency thereof requires an export license,
|
|
* other governmental approval, or letter of assurance, without first obtaining
|
|
* such license, approval or letter.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#define __NSNAMES_C__
|
|
|
|
#include "acpi.h"
|
|
#include "amlcode.h"
|
|
#include "acnamesp.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_NAMESPACE
|
|
ACPI_MODULE_NAME ("nsnames")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsBuildExternalPath
|
|
*
|
|
* PARAMETERS: Node - NS node whose pathname is needed
|
|
* Size - Size of the pathname
|
|
* *NameBuffer - Where to return the pathname
|
|
*
|
|
* RETURN: Places the pathname into the NameBuffer, in external format
|
|
* (name segments separated by path separators)
|
|
*
|
|
* DESCRIPTION: Generate a full pathaname
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiNsBuildExternalPath (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_SIZE Size,
|
|
NATIVE_CHAR *NameBuffer)
|
|
{
|
|
ACPI_SIZE Index;
|
|
ACPI_NAMESPACE_NODE *ParentNode;
|
|
|
|
|
|
ACPI_FUNCTION_NAME ("NsBuildExternalPath");
|
|
|
|
|
|
/* Special case for root */
|
|
|
|
Index = Size - 1;
|
|
if (Index < ACPI_NAME_SIZE)
|
|
{
|
|
NameBuffer[0] = AML_ROOT_PREFIX;
|
|
NameBuffer[1] = 0;
|
|
return;
|
|
}
|
|
|
|
/* Store terminator byte, then build name backwards */
|
|
|
|
ParentNode = Node;
|
|
NameBuffer[Index] = 0;
|
|
|
|
while ((Index > ACPI_NAME_SIZE) && (ParentNode != AcpiGbl_RootNode))
|
|
{
|
|
Index -= ACPI_NAME_SIZE;
|
|
|
|
/* Put the name into the buffer */
|
|
|
|
ACPI_MOVE_UNALIGNED32_TO_32 ((NameBuffer + Index), &ParentNode->Name);
|
|
ParentNode = AcpiNsGetParentNode (ParentNode);
|
|
|
|
/* Prefix name with the path separator */
|
|
|
|
Index--;
|
|
NameBuffer[Index] = PATH_SEPARATOR;
|
|
}
|
|
|
|
/* Overwrite final separator with the root prefix character */
|
|
|
|
NameBuffer[Index] = AML_ROOT_PREFIX;
|
|
|
|
if (Index != 0)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Could not construct pathname; index=%X, size=%X, Path=%s\n",
|
|
(UINT32) Index, (UINT32) Size, &NameBuffer[Size]));
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
#ifdef ACPI_DEBUG
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsGetExternalPathname
|
|
*
|
|
* PARAMETERS: Node - NS node whose pathname is needed
|
|
*
|
|
* RETURN: Pointer to storage containing the fully qualified name of
|
|
* the node, In external format (name segments separated by path
|
|
* separators.)
|
|
*
|
|
* DESCRIPTION: Used for debug printing in AcpiNsSearchTable().
|
|
*
|
|
******************************************************************************/
|
|
|
|
NATIVE_CHAR *
|
|
AcpiNsGetExternalPathname (
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
NATIVE_CHAR *NameBuffer;
|
|
ACPI_SIZE Size;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("NsGetExternalPathname", Node);
|
|
|
|
|
|
/* Calculate required buffer size based on depth below root */
|
|
|
|
Size = AcpiNsGetPathnameLength (Node);
|
|
|
|
/* Allocate a buffer to be returned to caller */
|
|
|
|
NameBuffer = ACPI_MEM_CALLOCATE (Size);
|
|
if (!NameBuffer)
|
|
{
|
|
ACPI_REPORT_ERROR (("NsGetTablePathname: allocation failure\n"));
|
|
return_PTR (NULL);
|
|
}
|
|
|
|
/* Build the path in the allocated buffer */
|
|
|
|
AcpiNsBuildExternalPath (Node, Size, NameBuffer);
|
|
return_PTR (NameBuffer);
|
|
}
|
|
#endif
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsGetPathnameLength
|
|
*
|
|
* PARAMETERS: Node - Namespace node
|
|
*
|
|
* RETURN: Length of path, including prefix
|
|
*
|
|
* DESCRIPTION: Get the length of the pathname string for this node
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_SIZE
|
|
AcpiNsGetPathnameLength (
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
ACPI_SIZE Size;
|
|
ACPI_NAMESPACE_NODE *NextNode;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/*
|
|
* Compute length of pathname as 5 * number of name segments.
|
|
* Go back up the parent tree to the root
|
|
*/
|
|
Size = 0;
|
|
NextNode = Node;
|
|
|
|
while (NextNode != AcpiGbl_RootNode)
|
|
{
|
|
Size += PATH_SEGMENT_LENGTH;
|
|
NextNode = AcpiNsGetParentNode (NextNode);
|
|
}
|
|
|
|
return (Size + 1);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsHandleToPathname
|
|
*
|
|
* PARAMETERS: TargetHandle - Handle of named object whose name is
|
|
* to be found
|
|
* Buffer - Where the pathname is returned
|
|
*
|
|
* RETURN: Status, Buffer is filled with pathname if status is AE_OK
|
|
*
|
|
* DESCRIPTION: Build and return a full namespace pathname
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiNsHandleToPathname (
|
|
ACPI_HANDLE TargetHandle,
|
|
ACPI_BUFFER *Buffer)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_SIZE RequiredSize;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("NsHandleToPathname", TargetHandle);
|
|
|
|
|
|
Node = AcpiNsMapHandleToNode (TargetHandle);
|
|
if (!Node)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Determine size required for the caller buffer */
|
|
|
|
RequiredSize = AcpiNsGetPathnameLength (Node);
|
|
|
|
/* Validate/Allocate/Clear caller buffer */
|
|
|
|
Status = AcpiUtInitializeBuffer (Buffer, RequiredSize);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Build the path in the caller buffer */
|
|
|
|
AcpiNsBuildExternalPath (Node, RequiredSize, Buffer->Pointer);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s [%X] \n", (char *) Buffer->Pointer, (UINT32) RequiredSize));
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|