| /****************************************************************************** |
| * |
| * Module Name: apfiles - File-related functions for acpidump utility |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2020, 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. |
| * |
| * 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" |
| |
| |
| /* Local prototypes */ |
| |
| static int |
| ApIsExistingFile ( |
| char *Pathname); |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: ApIsExistingFile |
| * |
| * PARAMETERS: Pathname - Output filename |
| * |
| * RETURN: 0 on success |
| * |
| * DESCRIPTION: Query for file overwrite if it already exists. |
| * |
| ******************************************************************************/ |
| |
| static int |
| ApIsExistingFile ( |
| char *Pathname) |
| { |
| #if !defined(_GNU_EFI) && !defined(_EDK2_EFI) |
| struct stat StatInfo; |
| int InChar; |
| |
| |
| if (!stat (Pathname, &StatInfo)) |
| { |
| fprintf (stderr, "Target path already exists, overwrite? [y|n] "); |
| |
| InChar = fgetc (stdin); |
| if (InChar == '\n') |
| { |
| InChar = fgetc (stdin); |
| } |
| |
| if (InChar != 'y' && InChar != 'Y') |
| { |
| return (-1); |
| } |
| } |
| #endif |
| |
| return (0); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * 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) |
| { |
| ACPI_FILE File; |
| |
| |
| /* If file exists, prompt for overwrite */ |
| |
| if (ApIsExistingFile (Pathname) != 0) |
| { |
| return (-1); |
| } |
| |
| /* Point stdout to the file */ |
| |
| File = fopen (Pathname, "w"); |
| if (!File) |
| { |
| fprintf (stderr, "Could not open output file: %s\n", Pathname); |
| return (-1); |
| } |
| |
| /* Save the file and path */ |
| |
| Gbl_OutputFile = File; |
| Gbl_OutputFilename = Pathname; |
| return (0); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: ApWriteToBinaryFile |
| * |
| * PARAMETERS: Table - ACPI table to be written |
| * Instance - ACPI table instance no. 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, |
| UINT32 Instance) |
| { |
| char Filename[ACPI_NAMESEG_SIZE + 16]; |
| char InstanceStr [16]; |
| ACPI_FILE File; |
| ACPI_SIZE Actual; |
| UINT32 TableLength; |
| |
| |
| /* Obtain table length */ |
| |
| TableLength = ApGetTableLength (Table); |
| |
| /* Construct lower-case filename from the table local signature */ |
| |
| if (ACPI_VALIDATE_RSDP_SIG (Table->Signature)) |
| { |
| ACPI_COPY_NAMESEG (Filename, ACPI_RSDP_NAME); |
| } |
| else |
| { |
| ACPI_COPY_NAMESEG (Filename, Table->Signature); |
| } |
| |
| Filename[0] = (char) tolower ((int) Filename[0]); |
| Filename[1] = (char) tolower ((int) Filename[1]); |
| Filename[2] = (char) tolower ((int) Filename[2]); |
| Filename[3] = (char) tolower ((int) Filename[3]); |
| Filename[ACPI_NAMESEG_SIZE] = 0; |
| |
| /* Handle multiple SSDTs - create different filenames for each */ |
| |
| if (Instance > 0) |
| { |
| snprintf (InstanceStr, sizeof (InstanceStr), "%u", Instance); |
| strcat (Filename, InstanceStr); |
| } |
| |
| strcat (Filename, FILE_SUFFIX_BINARY_TABLE); |
| |
| 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) |
| { |
| fprintf (stderr, "Could not open output file: %s\n", Filename); |
| return (-1); |
| } |
| |
| Actual = fwrite (Table, 1, TableLength, File); |
| if (Actual != TableLength) |
| { |
| fprintf (stderr, "Error writing binary output file: %s\n", Filename); |
| 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; |
| ACPI_FILE File; |
| UINT32 FileSize; |
| ACPI_SIZE Actual; |
| |
| |
| /* Must use binary mode */ |
| |
| File = fopen (Pathname, "rb"); |
| if (!File) |
| { |
| fprintf (stderr, "Could not open input file: %s\n", Pathname); |
| return (NULL); |
| } |
| |
| /* Need file size to allocate a buffer */ |
| |
| FileSize = CmGetFileSize (File); |
| if (FileSize == ACPI_UINT32_MAX) |
| { |
| fprintf (stderr, |
| "Could not get input file size: %s\n", Pathname); |
| goto Cleanup; |
| } |
| |
| /* Allocate a buffer for the entire file */ |
| |
| Buffer = ACPI_ALLOCATE_ZEROED (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); |
| ACPI_FREE (Buffer); |
| Buffer = NULL; |
| goto Cleanup; |
| } |
| |
| *OutFileSize = FileSize; |
| |
| Cleanup: |
| fclose (File); |
| return (Buffer); |
| } |