| /******************************************************************************* |
| * |
| * Module Name: utfileio - simple file I/O routines |
| * |
| ******************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2015, Intel Corp. |
| * All rights reserved. |
| * |
| * 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. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * 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 MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. |
| */ |
| |
| #include <contrib/dev/acpica/include/acpi.h> |
| #include <contrib/dev/acpica/include/accommon.h> |
| #include <contrib/dev/acpica/include/actables.h> |
| #include <contrib/dev/acpica/include/acapps.h> |
| |
| #ifdef ACPI_ASL_COMPILER |
| #include <contrib/dev/acpica/compiler/aslcompiler.h> |
| #endif |
| |
| |
| #define _COMPONENT ACPI_CA_DEBUGGER |
| ACPI_MODULE_NAME ("utfileio") |
| |
| |
| #ifdef ACPI_APPLICATION |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiUtCheckTextModeCorruption ( |
| UINT8 *Table, |
| UINT32 TableLength, |
| UINT32 FileLength); |
| |
| static ACPI_STATUS |
| AcpiUtReadTable ( |
| FILE *fp, |
| ACPI_TABLE_HEADER **Table, |
| UINT32 *TableLength); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtCheckTextModeCorruption |
| * |
| * PARAMETERS: Table - Table buffer |
| * TableLength - Length of table from the table header |
| * FileLength - Length of the file that contains the table |
| * |
| * 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 |
| AcpiUtCheckTextModeCorruption ( |
| UINT8 *Table, |
| UINT32 TableLength, |
| UINT32 FileLength) |
| { |
| UINT32 i; |
| UINT32 Pairs = 0; |
| |
| |
| if (TableLength != FileLength) |
| { |
| ACPI_WARNING ((AE_INFO, |
| "File length (0x%X) is not the same as the table length (0x%X)", |
| FileLength, TableLength)); |
| } |
| |
| /* Scan entire table to determine if each LF has been prefixed with a CR */ |
| |
| for (i = 1; i < FileLength; i++) |
| { |
| if (Table[i] == 0x0A) |
| { |
| if (Table[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); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtReadTable |
| * |
| * PARAMETERS: fp - File that contains table |
| * Table - Return value, buffer with table |
| * TableLength - Return value, length of table |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Load the DSDT from the file pointer |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiUtReadTable ( |
| FILE *fp, |
| ACPI_TABLE_HEADER **Table, |
| UINT32 *TableLength) |
| { |
| ACPI_TABLE_HEADER TableHeader; |
| UINT32 Actual; |
| ACPI_STATUS Status; |
| UINT32 FileSize; |
| BOOLEAN StandardHeader = TRUE; |
| INT32 Count; |
| |
| /* Get the file size */ |
| |
| FileSize = CmGetFileSize (fp); |
| if (FileSize == ACPI_UINT32_MAX) |
| { |
| return (AE_ERROR); |
| } |
| |
| if (FileSize < 4) |
| { |
| return (AE_BAD_HEADER); |
| } |
| |
| /* Read the signature */ |
| |
| fseek (fp, 0, SEEK_SET); |
| |
| Count = fread (&TableHeader, 1, sizeof (ACPI_TABLE_HEADER), fp); |
| if (Count != sizeof (ACPI_TABLE_HEADER)) |
| { |
| AcpiOsPrintf ("Could not read the table header\n"); |
| return (AE_BAD_HEADER); |
| } |
| |
| /* The RSDP table does not have standard ACPI header */ |
| |
| if (ACPI_VALIDATE_RSDP_SIG (TableHeader.Signature)) |
| { |
| *TableLength = FileSize; |
| StandardHeader = FALSE; |
| } |
| else |
| { |
| |
| #if 0 |
| /* Validate the table header/length */ |
| |
| Status = AcpiTbValidateTableHeader (&TableHeader); |
| if (ACPI_FAILURE (Status)) |
| { |
| AcpiOsPrintf ("Table header is invalid!\n"); |
| return (Status); |
| } |
| #endif |
| |
| /* File size must be at least as long as the Header-specified length */ |
| |
| if (TableHeader.Length > FileSize) |
| { |
| AcpiOsPrintf ( |
| "TableHeader length [0x%X] greater than the input file size [0x%X]\n", |
| TableHeader.Length, FileSize); |
| |
| #ifdef ACPI_ASL_COMPILER |
| AcpiOsPrintf ("File is corrupt or is ASCII text -- " |
| "it must be a binary file\n"); |
| #endif |
| return (AE_BAD_HEADER); |
| } |
| |
| #ifdef ACPI_OBSOLETE_CODE |
| /* We only support a limited number of table types */ |
| |
| if (!ACPI_COMPARE_NAME ((char *) TableHeader.Signature, ACPI_SIG_DSDT) && |
| !ACPI_COMPARE_NAME ((char *) TableHeader.Signature, ACPI_SIG_PSDT) && |
| !ACPI_COMPARE_NAME ((char *) TableHeader.Signature, ACPI_SIG_SSDT)) |
| { |
| AcpiOsPrintf ("Table signature [%4.4s] is invalid or not supported\n", |
| (char *) TableHeader.Signature); |
| ACPI_DUMP_BUFFER (&TableHeader, sizeof (ACPI_TABLE_HEADER)); |
| return (AE_ERROR); |
| } |
| #endif |
| |
| *TableLength = TableHeader.Length; |
| } |
| |
| /* Allocate a buffer for the table */ |
| |
| *Table = AcpiOsAllocate ((size_t) FileSize); |
| if (!*Table) |
| { |
| AcpiOsPrintf ( |
| "Could not allocate memory for ACPI table %4.4s (size=0x%X)\n", |
| TableHeader.Signature, *TableLength); |
| return (AE_NO_MEMORY); |
| } |
| |
| /* Get the rest of the table */ |
| |
| fseek (fp, 0, SEEK_SET); |
| Actual = fread (*Table, 1, (size_t) FileSize, fp); |
| if (Actual == FileSize) |
| { |
| if (StandardHeader) |
| { |
| /* Now validate the checksum */ |
| |
| Status = AcpiTbVerifyChecksum ((void *) *Table, |
| ACPI_CAST_PTR (ACPI_TABLE_HEADER, *Table)->Length); |
| |
| if (Status == AE_BAD_CHECKSUM) |
| { |
| Status = AcpiUtCheckTextModeCorruption ((UINT8 *) *Table, |
| FileSize, (*Table)->Length); |
| return (Status); |
| } |
| } |
| return (AE_OK); |
| } |
| |
| if (Actual > 0) |
| { |
| AcpiOsPrintf ("Warning - reading table, asked for %X got %X\n", |
| FileSize, Actual); |
| return (AE_OK); |
| } |
| |
| AcpiOsPrintf ("Error - could not read the table file\n"); |
| AcpiOsFree (*Table); |
| *Table = NULL; |
| *TableLength = 0; |
| return (AE_ERROR); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtReadTableFromFile |
| * |
| * PARAMETERS: Filename - File where table is located |
| * Table - Where a pointer to the table is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Get an ACPI table from a file |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiUtReadTableFromFile ( |
| char *Filename, |
| ACPI_TABLE_HEADER **Table) |
| { |
| FILE *File; |
| UINT32 FileSize; |
| UINT32 TableLength; |
| ACPI_STATUS Status = AE_ERROR; |
| |
| |
| /* Open the file, get current size */ |
| |
| File = fopen (Filename, "rb"); |
| if (!File) |
| { |
| perror ("Could not open input file"); |
| return (Status); |
| } |
| |
| FileSize = CmGetFileSize (File); |
| if (FileSize == ACPI_UINT32_MAX) |
| { |
| goto Exit; |
| } |
| |
| /* Get the entire file */ |
| |
| fprintf (stderr, |
| "Reading ACPI table from file %12s - Length %.8u (0x%06X)\n", |
| Filename, FileSize, FileSize); |
| |
| Status = AcpiUtReadTable (File, Table, &TableLength); |
| if (ACPI_FAILURE (Status)) |
| { |
| AcpiOsPrintf ("Could not get table from the file\n"); |
| } |
| |
| Exit: |
| fclose(File); |
| return (Status); |
| } |
| |
| #endif |