mirror of
https://github.com/reactos/reactos.git
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791 lines
24 KiB
C
791 lines
24 KiB
C
/******************************************************************************
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*
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* Module Name: nsprepkg - Validation of package objects for predefined names
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2020, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "acpi.h"
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#include "accommon.h"
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#include "acnamesp.h"
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#include "acpredef.h"
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#define _COMPONENT ACPI_NAMESPACE
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ACPI_MODULE_NAME ("nsprepkg")
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/* Local prototypes */
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static ACPI_STATUS
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AcpiNsCheckPackageList (
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ACPI_EVALUATE_INFO *Info,
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const ACPI_PREDEFINED_INFO *Package,
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ACPI_OPERAND_OBJECT **Elements,
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UINT32 Count);
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static ACPI_STATUS
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AcpiNsCheckPackageElements (
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ACPI_EVALUATE_INFO *Info,
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ACPI_OPERAND_OBJECT **Elements,
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UINT8 Type1,
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UINT32 Count1,
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UINT8 Type2,
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UINT32 Count2,
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UINT32 StartIndex);
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static ACPI_STATUS
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AcpiNsCustomPackage (
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ACPI_EVALUATE_INFO *Info,
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ACPI_OPERAND_OBJECT **Elements,
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UINT32 Count);
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsCheckPackage
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*
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* PARAMETERS: Info - Method execution information block
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* ReturnObjectPtr - Pointer to the object returned from the
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* evaluation of a method or object
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*
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* RETURN: Status
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*
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* DESCRIPTION: Check a returned package object for the correct count and
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* correct type of all sub-objects.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiNsCheckPackage (
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ACPI_EVALUATE_INFO *Info,
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ACPI_OPERAND_OBJECT **ReturnObjectPtr)
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{
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ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr;
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const ACPI_PREDEFINED_INFO *Package;
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ACPI_OPERAND_OBJECT **Elements;
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ACPI_STATUS Status = AE_OK;
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UINT32 ExpectedCount;
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UINT32 Count;
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UINT32 i;
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ACPI_FUNCTION_NAME (NsCheckPackage);
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/* The package info for this name is in the next table entry */
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Package = Info->Predefined + 1;
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ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
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"%s Validating return Package of Type %X, Count %X\n",
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Info->FullPathname, Package->RetInfo.Type,
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ReturnObject->Package.Count));
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/*
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* For variable-length Packages, we can safely remove all embedded
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* and trailing NULL package elements
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*/
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AcpiNsRemoveNullElements (Info, Package->RetInfo.Type, ReturnObject);
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/* Extract package count and elements array */
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Elements = ReturnObject->Package.Elements;
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Count = ReturnObject->Package.Count;
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/*
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* Most packages must have at least one element. The only exception
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* is the variable-length package (ACPI_PTYPE1_VAR).
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*/
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if (!Count)
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{
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if (Package->RetInfo.Type == ACPI_PTYPE1_VAR)
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{
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return (AE_OK);
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}
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ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
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"Return Package has no elements (empty)"));
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return (AE_AML_OPERAND_VALUE);
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}
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/*
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* Decode the type of the expected package contents
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*
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* PTYPE1 packages contain no subpackages
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* PTYPE2 packages contain subpackages
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*/
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switch (Package->RetInfo.Type)
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{
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case ACPI_PTYPE_CUSTOM:
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Status = AcpiNsCustomPackage (Info, Elements, Count);
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break;
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case ACPI_PTYPE1_FIXED:
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/*
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* The package count is fixed and there are no subpackages
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*
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* If package is too small, exit.
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* If package is larger than expected, issue warning but continue
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*/
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ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2;
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if (Count < ExpectedCount)
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{
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goto PackageTooSmall;
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}
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else if (Count > ExpectedCount)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
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"%s: Return Package is larger than needed - "
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"found %u, expected %u\n",
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Info->FullPathname, Count, ExpectedCount));
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}
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/* Validate all elements of the returned package */
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Status = AcpiNsCheckPackageElements (Info, Elements,
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Package->RetInfo.ObjectType1, Package->RetInfo.Count1,
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Package->RetInfo.ObjectType2, Package->RetInfo.Count2, 0);
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break;
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case ACPI_PTYPE1_VAR:
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/*
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* The package count is variable, there are no subpackages, and all
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* elements must be of the same type
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*/
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for (i = 0; i < Count; i++)
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{
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Status = AcpiNsCheckObjectType (Info, Elements,
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Package->RetInfo.ObjectType1, i);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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Elements++;
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}
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break;
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case ACPI_PTYPE1_OPTION:
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/*
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* The package count is variable, there are no subpackages. There are
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* a fixed number of required elements, and a variable number of
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* optional elements.
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*
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* Check if package is at least as large as the minimum required
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*/
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ExpectedCount = Package->RetInfo3.Count;
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if (Count < ExpectedCount)
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{
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goto PackageTooSmall;
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}
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/* Variable number of sub-objects */
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for (i = 0; i < Count; i++)
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{
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if (i < Package->RetInfo3.Count)
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{
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/* These are the required package elements (0, 1, or 2) */
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Status = AcpiNsCheckObjectType (Info, Elements,
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Package->RetInfo3.ObjectType[i], i);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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}
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else
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{
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/* These are the optional package elements */
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Status = AcpiNsCheckObjectType (Info, Elements,
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Package->RetInfo3.TailObjectType, i);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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}
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Elements++;
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}
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break;
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case ACPI_PTYPE2_REV_FIXED:
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/* First element is the (Integer) revision */
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Status = AcpiNsCheckObjectType (
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Info, Elements, ACPI_RTYPE_INTEGER, 0);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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Elements++;
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Count--;
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/* Examine the subpackages */
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Status = AcpiNsCheckPackageList (Info, Package, Elements, Count);
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break;
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case ACPI_PTYPE2_PKG_COUNT:
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/* First element is the (Integer) count of subpackages to follow */
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Status = AcpiNsCheckObjectType (
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Info, Elements, ACPI_RTYPE_INTEGER, 0);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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/*
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* Count cannot be larger than the parent package length, but allow it
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* to be smaller. The >= accounts for the Integer above.
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*/
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ExpectedCount = (UINT32) (*Elements)->Integer.Value;
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if (ExpectedCount >= Count)
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{
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goto PackageTooSmall;
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}
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Count = ExpectedCount;
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Elements++;
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/* Examine the subpackages */
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Status = AcpiNsCheckPackageList (Info, Package, Elements, Count);
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break;
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case ACPI_PTYPE2:
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case ACPI_PTYPE2_FIXED:
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case ACPI_PTYPE2_MIN:
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case ACPI_PTYPE2_COUNT:
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case ACPI_PTYPE2_FIX_VAR:
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/*
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* These types all return a single Package that consists of a
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* variable number of subpackages.
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*
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* First, ensure that the first element is a subpackage. If not,
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* the BIOS may have incorrectly returned the object as a single
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* package instead of a Package of Packages (a common error if
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* there is only one entry). We may be able to repair this by
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* wrapping the returned Package with a new outer Package.
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*/
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if (*Elements && ((*Elements)->Common.Type != ACPI_TYPE_PACKAGE))
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{
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/* Create the new outer package and populate it */
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Status = AcpiNsWrapWithPackage (
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Info, ReturnObject, ReturnObjectPtr);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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/* Update locals to point to the new package (of 1 element) */
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ReturnObject = *ReturnObjectPtr;
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Elements = ReturnObject->Package.Elements;
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Count = 1;
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}
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/* Examine the subpackages */
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Status = AcpiNsCheckPackageList (Info, Package, Elements, Count);
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break;
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case ACPI_PTYPE2_VAR_VAR:
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/*
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* Returns a variable list of packages, each with a variable list
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* of objects.
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*/
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break;
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case ACPI_PTYPE2_UUID_PAIR:
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/* The package must contain pairs of (UUID + type) */
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if (Count & 1)
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{
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ExpectedCount = Count + 1;
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goto PackageTooSmall;
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}
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while (Count > 0)
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{
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Status = AcpiNsCheckObjectType(Info, Elements,
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Package->RetInfo.ObjectType1, 0);
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if (ACPI_FAILURE(Status))
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{
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return (Status);
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}
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/* Validate length of the UUID buffer */
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if ((*Elements)->Buffer.Length != 16)
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{
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ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname,
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Info->NodeFlags, "Invalid length for UUID Buffer"));
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return (AE_AML_OPERAND_VALUE);
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}
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Status = AcpiNsCheckObjectType(Info, Elements + 1,
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Package->RetInfo.ObjectType2, 0);
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if (ACPI_FAILURE(Status))
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{
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return (Status);
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}
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Elements += 2;
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Count -= 2;
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}
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break;
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default:
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/* Should not get here if predefined info table is correct */
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ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
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"Invalid internal return type in table entry: %X",
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Package->RetInfo.Type));
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return (AE_AML_INTERNAL);
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}
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return (Status);
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PackageTooSmall:
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/* Error exit for the case with an incorrect package count */
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ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
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"Return Package is too small - found %u elements, expected %u",
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Count, ExpectedCount));
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return (AE_AML_OPERAND_VALUE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiNsCheckPackageList
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*
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* PARAMETERS: Info - Method execution information block
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* Package - Pointer to package-specific info for method
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* Elements - Element list of parent package. All elements
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* of this list should be of type Package.
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* Count - Count of subpackages
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*
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* RETURN: Status
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*
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* DESCRIPTION: Examine a list of subpackages
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiNsCheckPackageList (
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ACPI_EVALUATE_INFO *Info,
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const ACPI_PREDEFINED_INFO *Package,
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ACPI_OPERAND_OBJECT **Elements,
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UINT32 Count)
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{
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ACPI_OPERAND_OBJECT *SubPackage;
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ACPI_OPERAND_OBJECT **SubElements;
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ACPI_STATUS Status;
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UINT32 ExpectedCount;
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UINT32 i;
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UINT32 j;
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/*
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* Validate each subpackage in the parent Package
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*
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* NOTE: assumes list of subpackages contains no NULL elements.
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* Any NULL elements should have been removed by earlier call
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* to AcpiNsRemoveNullElements.
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*/
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for (i = 0; i < Count; i++)
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{
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SubPackage = *Elements;
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SubElements = SubPackage->Package.Elements;
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Info->ParentPackage = SubPackage;
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/* Each sub-object must be of type Package */
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Status = AcpiNsCheckObjectType (Info, &SubPackage,
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ACPI_RTYPE_PACKAGE, i);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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/* Examine the different types of expected subpackages */
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Info->ParentPackage = SubPackage;
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switch (Package->RetInfo.Type)
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{
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case ACPI_PTYPE2:
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case ACPI_PTYPE2_PKG_COUNT:
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case ACPI_PTYPE2_REV_FIXED:
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/* Each subpackage has a fixed number of elements */
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ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2;
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if (SubPackage->Package.Count < ExpectedCount)
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{
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goto PackageTooSmall;
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}
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Status = AcpiNsCheckPackageElements (Info, SubElements,
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Package->RetInfo.ObjectType1,
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Package->RetInfo.Count1,
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Package->RetInfo.ObjectType2,
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Package->RetInfo.Count2, 0);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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break;
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case ACPI_PTYPE2_FIX_VAR:
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/*
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* Each subpackage has a fixed number of elements and an
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* optional element
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*/
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ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2;
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if (SubPackage->Package.Count < ExpectedCount)
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{
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goto PackageTooSmall;
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}
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Status = AcpiNsCheckPackageElements (Info, SubElements,
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Package->RetInfo.ObjectType1,
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Package->RetInfo.Count1,
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Package->RetInfo.ObjectType2,
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SubPackage->Package.Count - Package->RetInfo.Count1, 0);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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break;
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case ACPI_PTYPE2_VAR_VAR:
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/*
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* Each subpackage has a fixed or variable number of elements
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*/
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break;
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case ACPI_PTYPE2_FIXED:
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/* Each subpackage has a fixed length */
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ExpectedCount = Package->RetInfo2.Count;
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if (SubPackage->Package.Count < ExpectedCount)
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{
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goto PackageTooSmall;
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}
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/* Check the type of each subpackage element */
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for (j = 0; j < ExpectedCount; j++)
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{
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Status = AcpiNsCheckObjectType (Info, &SubElements[j],
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Package->RetInfo2.ObjectType[j], j);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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}
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break;
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case ACPI_PTYPE2_MIN:
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/* Each subpackage has a variable but minimum length */
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ExpectedCount = Package->RetInfo.Count1;
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if (SubPackage->Package.Count < ExpectedCount)
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{
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goto PackageTooSmall;
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}
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/* Check the type of each subpackage element */
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Status = AcpiNsCheckPackageElements (Info, SubElements,
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Package->RetInfo.ObjectType1,
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SubPackage->Package.Count, 0, 0, 0);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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break;
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|
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case ACPI_PTYPE2_COUNT:
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/*
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* First element is the (Integer) count of elements, including
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* the count field (the ACPI name is NumElements)
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*/
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Status = AcpiNsCheckObjectType (Info, SubElements,
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ACPI_RTYPE_INTEGER, 0);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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/*
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* Make sure package is large enough for the Count and is
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* is as large as the minimum size
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*/
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ExpectedCount = (UINT32) (*SubElements)->Integer.Value;
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if (SubPackage->Package.Count < ExpectedCount)
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{
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goto PackageTooSmall;
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}
|
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|
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if (SubPackage->Package.Count < Package->RetInfo.Count1)
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{
|
|
ExpectedCount = Package->RetInfo.Count1;
|
|
goto PackageTooSmall;
|
|
}
|
|
|
|
if (ExpectedCount == 0)
|
|
{
|
|
/*
|
|
* Either the NumEntries element was originally zero or it was
|
|
* a NULL element and repaired to an Integer of value zero.
|
|
* In either case, repair it by setting NumEntries to be the
|
|
* actual size of the subpackage.
|
|
*/
|
|
ExpectedCount = SubPackage->Package.Count;
|
|
(*SubElements)->Integer.Value = ExpectedCount;
|
|
}
|
|
|
|
/* Check the type of each subpackage element */
|
|
|
|
Status = AcpiNsCheckPackageElements (Info, (SubElements + 1),
|
|
Package->RetInfo.ObjectType1,
|
|
(ExpectedCount - 1), 0, 0, 1);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
break;
|
|
|
|
default: /* Should not get here, type was validated by caller */
|
|
|
|
ACPI_ERROR ((AE_INFO, "Invalid Package type: %X",
|
|
Package->RetInfo.Type));
|
|
return (AE_AML_INTERNAL);
|
|
}
|
|
|
|
Elements++;
|
|
}
|
|
|
|
return (AE_OK);
|
|
|
|
|
|
PackageTooSmall:
|
|
|
|
/* The subpackage count was smaller than required */
|
|
|
|
ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
|
|
"Return SubPackage[%u] is too small - found %u elements, expected %u",
|
|
i, SubPackage->Package.Count, ExpectedCount));
|
|
|
|
return (AE_AML_OPERAND_VALUE);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsCustomPackage
|
|
*
|
|
* PARAMETERS: Info - Method execution information block
|
|
* Elements - Pointer to the package elements array
|
|
* Count - Element count for the package
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Check a returned package object for the correct count and
|
|
* correct type of all sub-objects.
|
|
*
|
|
* NOTE: Currently used for the _BIX method only. When needed for two or more
|
|
* methods, probably a detect/dispatch mechanism will be required.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiNsCustomPackage (
|
|
ACPI_EVALUATE_INFO *Info,
|
|
ACPI_OPERAND_OBJECT **Elements,
|
|
UINT32 Count)
|
|
{
|
|
UINT32 ExpectedCount;
|
|
UINT32 Version;
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (NsCustomPackage);
|
|
|
|
|
|
/* Get version number, must be Integer */
|
|
|
|
if ((*Elements)->Common.Type != ACPI_TYPE_INTEGER)
|
|
{
|
|
ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
|
|
"Return Package has invalid object type for version number"));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
Version = (UINT32) (*Elements)->Integer.Value;
|
|
ExpectedCount = 21; /* Version 1 */
|
|
|
|
if (Version == 0)
|
|
{
|
|
ExpectedCount = 20; /* Version 0 */
|
|
}
|
|
|
|
if (Count < ExpectedCount)
|
|
{
|
|
ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags,
|
|
"Return Package is too small - found %u elements, expected %u",
|
|
Count, ExpectedCount));
|
|
return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
|
|
}
|
|
else if (Count > ExpectedCount)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR,
|
|
"%s: Return Package is larger than needed - "
|
|
"found %u, expected %u\n",
|
|
Info->FullPathname, Count, ExpectedCount));
|
|
}
|
|
|
|
/* Validate all elements of the returned package */
|
|
|
|
Status = AcpiNsCheckPackageElements (Info, Elements,
|
|
ACPI_RTYPE_INTEGER, 16,
|
|
ACPI_RTYPE_STRING, 4, 0);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Version 1 has a single trailing integer */
|
|
|
|
if (Version > 0)
|
|
{
|
|
Status = AcpiNsCheckPackageElements (Info, Elements + 20,
|
|
ACPI_RTYPE_INTEGER, 1, 0, 0, 20);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiNsCheckPackageElements
|
|
*
|
|
* PARAMETERS: Info - Method execution information block
|
|
* Elements - Pointer to the package elements array
|
|
* Type1 - Object type for first group
|
|
* Count1 - Count for first group
|
|
* Type2 - Object type for second group
|
|
* Count2 - Count for second group
|
|
* StartIndex - Start of the first group of elements
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Check that all elements of a package are of the correct object
|
|
* type. Supports up to two groups of different object types.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiNsCheckPackageElements (
|
|
ACPI_EVALUATE_INFO *Info,
|
|
ACPI_OPERAND_OBJECT **Elements,
|
|
UINT8 Type1,
|
|
UINT32 Count1,
|
|
UINT8 Type2,
|
|
UINT32 Count2,
|
|
UINT32 StartIndex)
|
|
{
|
|
ACPI_OPERAND_OBJECT **ThisElement = Elements;
|
|
ACPI_STATUS Status;
|
|
UINT32 i;
|
|
|
|
|
|
/*
|
|
* Up to two groups of package elements are supported by the data
|
|
* structure. All elements in each group must be of the same type.
|
|
* The second group can have a count of zero.
|
|
*/
|
|
for (i = 0; i < Count1; i++)
|
|
{
|
|
Status = AcpiNsCheckObjectType (Info, ThisElement,
|
|
Type1, i + StartIndex);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
ThisElement++;
|
|
}
|
|
|
|
for (i = 0; i < Count2; i++)
|
|
{
|
|
Status = AcpiNsCheckObjectType (Info, ThisElement,
|
|
Type2, (i + Count1 + StartIndex));
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
ThisElement++;
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|