| /****************************************************************************** |
| * |
| * Module Name: apfiles - File-related functions for acpidump utility |
| * |
| *****************************************************************************/ |
| |
| /* |
| * 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 "acpidump.h" |
| #include "acapps.h" |
| |
| /* Local prototypes */ |
| |
| static int ap_is_existing_file(char *pathname); |
| |
| static int ap_is_existing_file(char *pathname) |
| { |
| #ifndef _GNU_EFI |
| struct stat stat_info; |
| |
| if (!stat(pathname, &stat_info)) { |
| acpi_log_error("Target path already exists, overwrite? [y|n] "); |
| |
| if (getchar() != 'y') { |
| return (-1); |
| } |
| } |
| #endif |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: ap_open_output_file |
| * |
| * PARAMETERS: pathname - Output filename |
| * |
| * RETURN: Open file handle |
| * |
| * DESCRIPTION: Open a text output file for acpidump. Checks if file already |
| * exists. |
| * |
| ******************************************************************************/ |
| |
| int ap_open_output_file(char *pathname) |
| { |
| ACPI_FILE file; |
| |
| /* If file exists, prompt for overwrite */ |
| |
| if (ap_is_existing_file(pathname) != 0) { |
| return (-1); |
| } |
| |
| /* Point stdout to the file */ |
| |
| file = acpi_os_open_file(pathname, ACPI_FILE_WRITING); |
| if (!file) { |
| acpi_log_error("Could not open output file: %s\n", pathname); |
| return (-1); |
| } |
| |
| /* Save the file and path */ |
| |
| gbl_output_file = file; |
| gbl_output_filename = pathname; |
| return (0); |
| } |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: ap_write_to_binary_file |
| * |
| * 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 ap_write_to_binary_file(struct acpi_table_header *table, u32 instance) |
| { |
| char filename[ACPI_NAME_SIZE + 16]; |
| char instance_str[16]; |
| ACPI_FILE file; |
| size_t actual; |
| u32 table_length; |
| |
| /* Obtain table length */ |
| |
| table_length = ap_get_table_length(table); |
| |
| /* Construct lower-case filename from the table local signature */ |
| |
| if (ACPI_VALIDATE_RSDP_SIG(table->signature)) { |
| ACPI_MOVE_NAME(filename, ACPI_RSDP_NAME); |
| } else { |
| ACPI_MOVE_NAME(filename, table->signature); |
| } |
| filename[0] = (char)ACPI_TOLOWER(filename[0]); |
| filename[1] = (char)ACPI_TOLOWER(filename[1]); |
| filename[2] = (char)ACPI_TOLOWER(filename[2]); |
| filename[3] = (char)ACPI_TOLOWER(filename[3]); |
| filename[ACPI_NAME_SIZE] = 0; |
| |
| /* Handle multiple SSDts - create different filenames for each */ |
| |
| if (instance > 0) { |
| acpi_ut_snprintf(instance_str, sizeof(instance_str), "%u", |
| instance); |
| ACPI_STRCAT(filename, instance_str); |
| } |
| |
| ACPI_STRCAT(filename, ACPI_TABLE_FILE_SUFFIX); |
| |
| if (gbl_verbose_mode) { |
| acpi_log_error |
| ("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 = acpi_os_open_file(filename, |
| ACPI_FILE_WRITING | ACPI_FILE_BINARY); |
| if (!file) { |
| acpi_log_error("Could not open output file: %s\n", filename); |
| return (-1); |
| } |
| |
| actual = acpi_os_write_file(file, table, 1, table_length); |
| if (actual != table_length) { |
| acpi_log_error("Error writing binary output file: %s\n", |
| filename); |
| acpi_os_close_file(file); |
| return (-1); |
| } |
| |
| acpi_os_close_file(file); |
| return (0); |
| } |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: ap_get_table_from_file |
| * |
| * PARAMETERS: pathname - File containing the binary ACPI table |
| * out_file_size - 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 |
| * |
| ******************************************************************************/ |
| |
| struct acpi_table_header *ap_get_table_from_file(char *pathname, |
| u32 *out_file_size) |
| { |
| struct acpi_table_header *buffer = NULL; |
| ACPI_FILE file; |
| u32 file_size; |
| size_t actual; |
| |
| /* Must use binary mode */ |
| |
| file = |
| acpi_os_open_file(pathname, ACPI_FILE_READING | ACPI_FILE_BINARY); |
| if (!file) { |
| acpi_log_error("Could not open input file: %s\n", pathname); |
| return (NULL); |
| } |
| |
| /* Need file size to allocate a buffer */ |
| |
| file_size = cm_get_file_size(file); |
| if (file_size == ACPI_UINT32_MAX) { |
| acpi_log_error("Could not get input file size: %s\n", pathname); |
| goto cleanup; |
| } |
| |
| /* Allocate a buffer for the entire file */ |
| |
| buffer = ACPI_ALLOCATE_ZEROED(file_size); |
| if (!buffer) { |
| acpi_log_error("Could not allocate file buffer of size: %u\n", |
| file_size); |
| goto cleanup; |
| } |
| |
| /* Read the entire file */ |
| |
| actual = acpi_os_read_file(file, buffer, 1, file_size); |
| if (actual != file_size) { |
| acpi_log_error("Could not read input file: %s\n", pathname); |
| ACPI_FREE(buffer); |
| buffer = NULL; |
| goto cleanup; |
| } |
| |
| *out_file_size = file_size; |
| |
| cleanup: |
| acpi_os_close_file(file); |
| return (buffer); |
| } |