362 lines
10 KiB
C
362 lines
10 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: utfileio - simple file I/O routines
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2014, 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 "acpi.h"
|
|
#include "accommon.h"
|
|
#include "actables.h"
|
|
#include "acapps.h"
|
|
|
|
#ifdef ACPI_ASL_COMPILER
|
|
#include "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
|
|
Status = FlCheckForAscii (fp, NULL, FALSE);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
AcpiOsPrintf ("File appears to be ASCII only, must be binary\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, "Loading Acpi table from file %10s - Length %.8u (%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
|