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/******************************************************************************
*
* Module Name: apfiles - File-related functions for acpidump utility
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2013, 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 "acpidump.h"
#include "acapps.h"
/******************************************************************************
*
* FUNCTION: ApOpenOutputFile
*
* PARAMETERS: Pathname - Output filename
*
* RETURN: Open file handle
*
* DESCRIPTION: Open a text output file for acpidump. Checks if file already
* exists.
*
******************************************************************************/
int
ApOpenOutputFile (
char *Pathname)
{
struct stat StatInfo;
FILE *File;
/* If file exists, prompt for overwrite */
if (!stat (Pathname, &StatInfo))
{
fprintf (stderr, "Target path already exists, overwrite? [y|n] ");
if (getchar () != 'y')
{
return (-1);
}
}
/* Point stdout to the file */
File = freopen (Pathname, "w", stdout);
if (!File)
{
perror ("Could not open output file");
return (-1);
}
/* Save the file and path */
Gbl_OutputFile = File;
Gbl_OutputFilename = Pathname;
return (0);
}
/******************************************************************************
*
* FUNCTION: ApWriteToBinaryFile
*
* PARAMETERS: Table - ACPI table to be written
*
* RETURN: Status
*
* DESCRIPTION: Write an ACPI table to a binary file. Builds the output
* filename from the table signature.
*
******************************************************************************/
int
ApWriteToBinaryFile (
ACPI_TABLE_HEADER *Table)
{
char Filename[ACPI_NAME_SIZE + 16];
char SsdtInstance [16];
FILE *File;
size_t Actual;
/* Construct lower-case filename from the table signature */
Filename[0] = (char) ACPI_TOLOWER (Table->Signature[0]);
Filename[1] = (char) ACPI_TOLOWER (Table->Signature[1]);
Filename[2] = (char) ACPI_TOLOWER (Table->Signature[2]);
Filename[3] = (char) ACPI_TOLOWER (Table->Signature[3]);
Filename[ACPI_NAME_SIZE] = 0;
/* Handle multiple SSDTs - create different filenames for each */
if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_SSDT))
{
sprintf (SsdtInstance, "%u", Gbl_SsdtCount);
strcat (Filename, SsdtInstance);
Gbl_SsdtCount++;
}
strcat (Filename, ACPI_TABLE_FILE_SUFFIX);
if (Gbl_VerboseMode)
{
fprintf (stderr,
"Writing [%4.4s] to binary file: %s 0x%X (%u) bytes\n",
Table->Signature, Filename, Table->Length, Table->Length);
}
/* Open the file and dump the entire table in binary mode */
File = fopen (Filename, "wb");
if (!File)
{
perror ("Could not open output file");
return (-1);
}
Actual = fwrite (Table, 1, Table->Length, File);
if (Actual != Table->Length)
{
perror ("Error writing binary output file");
fclose (File);
return (-1);
}
fclose (File);
return (0);
}
/******************************************************************************
*
* FUNCTION: ApGetTableFromFile
*
* PARAMETERS: Pathname - File containing the binary ACPI table
* OutFileSize - Where the file size is returned
*
* RETURN: Buffer containing the ACPI table. NULL on error.
*
* DESCRIPTION: Open a file and read it entirely into a new buffer
*
******************************************************************************/
ACPI_TABLE_HEADER *
ApGetTableFromFile (
char *Pathname,
UINT32 *OutFileSize)
{
ACPI_TABLE_HEADER *Buffer = NULL;
FILE *File;
UINT32 FileSize;
size_t Actual;
/* Must use binary mode */
File = fopen (Pathname, "rb");
if (!File)
{
perror ("Could not open input file");
return (NULL);
}
/* Need file size to allocate a buffer */
FileSize = ApGetFileSize (File);
if (!FileSize)
{
fprintf (stderr,
"Could not get input file size: %s\n", Pathname);
goto Cleanup;
}
/* Allocate a buffer for the entire file */
Buffer = calloc (1, FileSize);
if (!Buffer)
{
fprintf (stderr,
"Could not allocate file buffer of size: %u\n", FileSize);
goto Cleanup;
}
/* Read the entire file */
Actual = fread (Buffer, 1, FileSize, File);
if (Actual != FileSize)
{
fprintf (stderr,
"Could not read input file: %s\n", Pathname);
free (Buffer);
Buffer = NULL;
goto Cleanup;
}
*OutFileSize = FileSize;
Cleanup:
fclose (File);
return (Buffer);
}
/******************************************************************************
*
* FUNCTION: ApGetFileSize
*
* PARAMETERS: File - Open file descriptor
*
* RETURN: File size in bytes
*
* DESCRIPTION: Get the size of an open file
*
******************************************************************************/
UINT32
ApGetFileSize (
FILE *File)
{
UINT32 FileSize;
long Offset;
Offset = ftell (File);
if (fseek (File, 0, SEEK_END))
{
return (0);
}
/* Get size and restore file pointer */
FileSize = (UINT32) ftell (File);
if (fseek (File, Offset, SEEK_SET))
{
return (0);
}
return (FileSize);
}
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