/****************************************************************************** * * Module Name: acfileio - Get ACPI tables from file * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2023, 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. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include #include #include #include #include #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME ("acfileio") /* Local prototypes */ static ACPI_STATUS AcGetOneTableFromFile ( char *Filename, FILE *File, UINT8 GetOnlyAmlTables, ACPI_TABLE_HEADER **Table); static ACPI_STATUS AcCheckTextModeCorruption ( ACPI_TABLE_HEADER *Table); /******************************************************************************* * * FUNCTION: AcDeleteTableList * * PARAMETERS: ListHead - List to delete * * RETURN: Status * * DESCRIPTION: Delete a list of tables. This is useful for removing memory * allocated by AcGetAllTablesFromFile * ******************************************************************************/ void AcDeleteTableList ( ACPI_NEW_TABLE_DESC *ListHead) { ACPI_NEW_TABLE_DESC *Current = ListHead; ACPI_NEW_TABLE_DESC *Previous = Current; while (Current) { Current = Current->Next; AcpiOsFree (Previous); Previous = Current; } } /******************************************************************************* * * FUNCTION: AcGetAllTablesFromFile * * PARAMETERS: Filename - Table filename * GetOnlyAmlTables - TRUE if the tables must be AML tables * ReturnListHead - Where table list is returned * * RETURN: Status * * DESCRIPTION: Get all ACPI tables from within a single file. * ******************************************************************************/ ACPI_STATUS AcGetAllTablesFromFile ( char *Filename, UINT8 GetOnlyAmlTables, ACPI_NEW_TABLE_DESC **ReturnListHead) { ACPI_NEW_TABLE_DESC *ListHead = NULL; ACPI_NEW_TABLE_DESC *ListTail = NULL; ACPI_NEW_TABLE_DESC *TableDesc; FILE *File; ACPI_TABLE_HEADER *Table = NULL; UINT32 FileSize; ACPI_STATUS Status = AE_OK; File = fopen (Filename, "rb"); if (!File) { fprintf (stderr, "Could not open input file: %s\n", Filename); if (errno == ENOENT) { return (AE_NOT_EXIST); } return (AE_ERROR); } /* Get the file size */ FileSize = CmGetFileSize (File); if (FileSize == ACPI_UINT32_MAX) { Status = AE_ERROR; goto Exit; } fprintf (stderr, "Input file %s, Length 0x%X (%u) bytes\n", Filename, FileSize, FileSize); /* We must have at least one ACPI table header */ if (FileSize < sizeof (ACPI_TABLE_HEADER)) { Status = AE_BAD_HEADER; goto Exit; } /* Check for an non-binary file */ if (!AcIsFileBinary (File)) { fprintf (stderr, " %s: File does not appear to contain a valid AML table\n", Filename); Status = AE_TYPE; goto Exit; } /* Read all tables within the file */ while (ACPI_SUCCESS (Status)) { /* Get one entire ACPI table */ Status = AcGetOneTableFromFile ( Filename, File, GetOnlyAmlTables, &Table); if (Status == AE_CTRL_TERMINATE) { Status = AE_OK; break; } else if (Status == AE_TYPE) { Status = AE_OK; goto Exit; } else if (ACPI_FAILURE (Status)) { goto Exit; } /* Print table header for iASL/disassembler only */ #ifdef ACPI_ASL_COMPILER AcpiTbPrintTableHeader (0, Table); #endif /* Allocate and link a table descriptor */ TableDesc = AcpiOsAllocate (sizeof (ACPI_NEW_TABLE_DESC)); if (!TableDesc) { AcpiOsFree (Table); Status = AE_NO_MEMORY; goto Exit; } TableDesc->Table = Table; TableDesc->Next = NULL; /* Link at the end of the local table list */ if (!ListHead) { ListHead = TableDesc; ListTail = TableDesc; } else { ListTail->Next = TableDesc; ListTail = TableDesc; } } /* Add the local table list to the end of the global list */ if (*ReturnListHead) { ListTail = *ReturnListHead; while (ListTail->Next) { ListTail = ListTail->Next; } ListTail->Next = ListHead; } else { *ReturnListHead = ListHead; } Exit: fclose(File); return (Status); } /******************************************************************************* * * FUNCTION: AcGetOneTableFromFile * * PARAMETERS: Filename - File where table is located * File - Open FILE pointer to Filename * GetOnlyAmlTables - TRUE if the tables must be AML tables. * ReturnTable - Where a pointer to the table is returned * * RETURN: Status * * DESCRIPTION: Read the next ACPI table from a file. Implements support * for multiple tables within a single file. File must already * be open. * * Note: Loading an RSDP is not supported. * ******************************************************************************/ static ACPI_STATUS AcGetOneTableFromFile ( char *Filename, FILE *File, UINT8 GetOnlyAmlTables, ACPI_TABLE_HEADER **ReturnTable) { ACPI_STATUS Status = AE_OK; ACPI_TABLE_HEADER TableHeader; ACPI_TABLE_HEADER *Table; INT32 Count; UINT32 TableLength; UINT32 HeaderLength; long TableOffset = 0; *ReturnTable = NULL; /* Get the table header to examine signature and length */ /* * Special handling for the CDAT table (both the Length field * and the Checksum field are not in the standard positions). * (The table header is non-standard). */ if (AcpiGbl_CDAT) { HeaderLength = sizeof (ACPI_TABLE_CDAT); } else { HeaderLength = sizeof (ACPI_TABLE_HEADER); } Status = AcValidateTableHeader (File, TableOffset); if (ACPI_FAILURE (Status)) { return (Status); } TableOffset = ftell (File); Count = fread (&TableHeader, 1, HeaderLength, File); if (Count != (INT32) HeaderLength) { return (AE_CTRL_TERMINATE); } if (GetOnlyAmlTables) { /* Validate the table signature/header (limited ASCII chars) */ /* * Table must be an AML table (DSDT/SSDT). * Used for iASL -e option only. */ if (!AcpiUtIsAmlTable (&TableHeader)) { fprintf (stderr, " %s: Table [%4.4s] is not an AML table - ignoring\n", Filename, TableHeader.Signature); return (AE_TYPE); } } /* * Special handling for the CDAT table (both the Length field * and the Checksum field are not in the standard positions). */ if (AcpiGbl_CDAT) { TableLength = ACPI_CAST_PTR (ACPI_TABLE_CDAT, &TableHeader)->Length; } else { TableLength = TableHeader.Length; } /* Allocate a buffer for the entire table */ Table = AcpiOsAllocate ((ACPI_SIZE) TableLength); if (!Table) { return (AE_NO_MEMORY); } /* Read the entire ACPI table, including header */ fseek (File, TableOffset, SEEK_SET); Count = fread (Table, 1, TableLength, File); /* * Checks for data table headers happen later in the execution. Only verify * for Aml tables at this point in the code. */ if (GetOnlyAmlTables && Count != (INT32) TableLength) { Status = AE_ERROR; goto ErrorExit; } /* * Validate the checksum (just issue a warning if incorrect). * Note: CDAT is special cased here because the table does * not have the checksum field in the standard position. */ if (AcpiGbl_CDAT) { Status = AcpiUtVerifyCdatChecksum ((ACPI_TABLE_CDAT *) Table, TableLength); } else { Status = AcpiUtVerifyChecksum (Table, TableLength); } if (ACPI_FAILURE (Status)) { Status = AcCheckTextModeCorruption (Table); if (ACPI_FAILURE (Status)) { goto ErrorExit; } } *ReturnTable = Table; return (AE_OK); ErrorExit: AcpiOsFree (Table); return (Status); } /******************************************************************************* * * FUNCTION: AcIsFileBinary * * PARAMETERS: File - Open input file * * RETURN: TRUE if file appears to be binary * * DESCRIPTION: Scan a file for any non-ASCII bytes. * * Note: Maintains current file position. * ******************************************************************************/ BOOLEAN AcIsFileBinary ( FILE *File) { UINT8 Byte; BOOLEAN IsBinary = FALSE; long FileOffset; /* Scan entire file for any non-ASCII bytes */ FileOffset = ftell (File); while (fread (&Byte, 1, 1, File) == 1) { if (!isprint (Byte) && !isspace (Byte)) { IsBinary = TRUE; goto Exit; } } Exit: fseek (File, FileOffset, SEEK_SET); return (IsBinary); } /******************************************************************************* * * FUNCTION: AcValidateTableHeader * * PARAMETERS: File - Open input file * * RETURN: Status * * DESCRIPTION: Determine if a file seems to contain one or more binary ACPI * tables, via the * following checks on what would be the table header: * 1) File must be at least as long as an ACPI_TABLE_HEADER * 2) There must be enough room in the file to hold entire table * 3) Signature, OemId, OemTableId, AslCompilerId must be ASCII * * Note: There can be multiple definition blocks per file, so we cannot * expect/compare the file size to be equal to the table length. 12/2015. * * Note: Maintains current file position. * ******************************************************************************/ ACPI_STATUS AcValidateTableHeader ( FILE *File, long TableOffset) { ACPI_TABLE_HEADER TableHeader; ACPI_TABLE_CDAT *CdatTableHeader = ACPI_CAST_PTR (ACPI_TABLE_CDAT, &TableHeader); UINT32 HeaderLength; ACPI_SIZE Actual; long OriginalOffset; UINT32 FileSize; UINT32 i; ACPI_FUNCTION_TRACE (AcValidateTableHeader); /* Determine the type of table header */ if (AcpiGbl_CDAT) { HeaderLength = sizeof (ACPI_TABLE_CDAT); } else { HeaderLength = sizeof (ACPI_TABLE_HEADER); } /* Read a potential table header */ OriginalOffset = ftell (File); if (fseek (File, TableOffset, SEEK_SET)) { fprintf (stderr, "SEEK error\n"); } Actual = fread (&TableHeader, 1, HeaderLength, File); if (fseek (File, OriginalOffset, SEEK_SET)) { fprintf (stderr, "SEEK error\n"); } if (Actual < HeaderLength) { fprintf (stderr, "Could not read entire table header: Actual %u, Requested %u\n", (UINT32) Actual, HeaderLength); return (AE_ERROR); } /* Validate the signature (limited ASCII chars) */ if (!AcpiGbl_CDAT && !AcpiUtValidNameseg (TableHeader.Signature)) { /* * The "-ds cdat" option was not used, and the signature is not valid. * * For CDAT we are assuming that there should be at least one non-ASCII * byte in the (normally) 4-character Signature field (at least the * high-order byte should be zero). Otherwise, this is OK. */ fprintf (stderr, "\nTable appears to be a CDAT table, which has no signature.\n" "If this is in fact a CDAT table, use the -ds option on the\n" "command line to specify the table type (signature):\n" "\"iasl -d -ds CDAT \" or \"iasl -ds CDAT -T CDAT\"\n\n"); return (AE_BAD_SIGNATURE); } /* Validate table length against bytes remaining in the file */ FileSize = CmGetFileSize (File); if (!AcpiGbl_CDAT) { /* Standard ACPI table header */ if (TableHeader.Length > (UINT32) (FileSize - TableOffset)) { fprintf (stderr, "Table [%4.4s] is too long for file - " "needs: 0x%.2X, remaining in file: 0x%.2X\n", TableHeader.Signature, TableHeader.Length, (UINT32) (FileSize - TableOffset)); return (AE_BAD_HEADER); } } else if (CdatTableHeader->Length > (UINT32) (FileSize - TableOffset)) { /* Special header for CDAT table */ fprintf (stderr, "Table [CDAT] is too long for file - " "needs: 0x%.2X, remaining in file: 0x%.2X\n", CdatTableHeader->Length, (UINT32) (FileSize - TableOffset)); return (AE_BAD_HEADER); } /* For CDAT table, there are no ASCII fields in the header, we are done */ if (AcpiGbl_CDAT) { return (AE_OK); } /* * These standard fields must be ASCII: OemId, OemTableId, AslCompilerId. * We allow a NULL terminator in OemId and OemTableId. */ for (i = 0; i < ACPI_NAMESEG_SIZE; i++) { if (!ACPI_IS_ASCII ((UINT8) TableHeader.AslCompilerId[i])) { goto BadCharacters; } } for (i = 0; (i < ACPI_OEM_ID_SIZE) && (TableHeader.OemId[i]); i++) { if (!ACPI_IS_ASCII ((UINT8) TableHeader.OemId[i])) { goto BadCharacters; } } for (i = 0; (i < ACPI_OEM_TABLE_ID_SIZE) && (TableHeader.OemTableId[i]); i++) { if (!ACPI_IS_ASCII ((UINT8) TableHeader.OemTableId[i])) { goto BadCharacters; } } return (AE_OK); BadCharacters: ACPI_WARNING ((AE_INFO, "Table header for [%4.4s] has invalid ASCII character(s)", TableHeader.Signature)); return (AE_OK); } /******************************************************************************* * * FUNCTION: AcCheckTextModeCorruption * * PARAMETERS: Table - Table buffer starting with table header * * RETURN: Status * * DESCRIPTION: Check table for text mode file corruption where all linefeed * characters (LF) have been replaced by carriage return linefeed * pairs (CR/LF). * ******************************************************************************/ static ACPI_STATUS AcCheckTextModeCorruption ( ACPI_TABLE_HEADER *Table) { UINT32 i; UINT32 Pairs = 0; UINT8 *Buffer = ACPI_CAST_PTR (UINT8, Table); /* Scan entire table to determine if each LF has been prefixed with a CR */ for (i = 1; i < Table->Length; i++) { if (Buffer[i] == 0x0A) { if (Buffer[i - 1] != 0x0D) { /* The LF does not have a preceding CR, table not corrupted */ return (AE_OK); } else { /* Found a CR/LF pair */ Pairs++; } i++; } } if (!Pairs) { return (AE_OK); } /* * Entire table scanned, each CR is part of a CR/LF pair -- * meaning that the table was treated as a text file somewhere. * * NOTE: We can't "fix" the table, because any existing CR/LF pairs in the * original table are left untouched by the text conversion process -- * meaning that we cannot simply replace CR/LF pairs with LFs. */ AcpiOsPrintf ("Table has been corrupted by text mode conversion\n"); AcpiOsPrintf ("All LFs (%u) were changed to CR/LF pairs\n", Pairs); AcpiOsPrintf ("Table cannot be repaired!\n"); return (AE_BAD_VALUE); }