/****************************************************************************** * * Module Name: oslibcfs - C library OSL for file I/O * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2016, Intel Corp. * All rights reserved. * * 2. License * * 2.1. This is your license from Intel Corp. under its intellectual property * rights. You may have additional license terms from the party that provided * you this software, covering your right to use that party's intellectual * property rights. * * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a * copy of the source code appearing in this file ("Covered Code") an * irrevocable, perpetual, worldwide license under Intel's copyrights in the * base code distributed originally by Intel ("Original Intel Code") to copy, * make derivatives, distribute, use and display any portion of the Covered * Code in any form, with the right to sublicense such rights; and * * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent * license (with the right to sublicense), under only those claims of Intel * patents that are infringed by the Original Intel Code, to make, use, sell, * offer to sell, and import the Covered Code and derivative works thereof * solely to the minimum extent necessary to exercise the above copyright * license, and in no event shall the patent license extend to any additions * to or modifications of the Original Intel Code. No other license or right * is granted directly or by implication, estoppel or otherwise; * * The above copyright and patent license is granted only if the following * conditions are met: * * 3. Conditions * * 3.1. Redistribution of Source with Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification with rights to further distribute source must include * the above Copyright Notice, the above License, this list of Conditions, * and the following Disclaimer and Export Compliance provision. In addition, * Licensee must cause all Covered Code to which Licensee contributes to * contain a file documenting the changes Licensee made to create that Covered * Code and the date of any change. Licensee must include in that file the * documentation of any changes made by any predecessor Licensee. Licensee * must include a prominent statement that the modification is derived, * directly or indirectly, from Original Intel Code. * * 3.2. Redistribution of Source with no Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification without rights to further distribute source must * include the following Disclaimer and Export Compliance provision in the * documentation and/or other materials provided with distribution. In * addition, Licensee may not authorize further sublicense of source of any * portion of the Covered Code, and must include terms to the effect that the * license from Licensee to its licensee is limited to the intellectual * property embodied in the software Licensee provides to its licensee, and * not to intellectual property embodied in modifications its licensee may * make. * * 3.3. Redistribution of Executable. Redistribution in executable form of any * substantial portion of the Covered Code or modification must reproduce the * above Copyright Notice, and the following Disclaimer and Export Compliance * provision in the documentation and/or other materials provided with the * distribution. * * 3.4. Intel retains all right, title, and interest in and to the Original * Intel Code. * * 3.5. Neither the name Intel nor any other trademark owned or controlled by * Intel shall be used in advertising or otherwise to promote the sale, use or * other dealings in products derived from or relating to the Covered Code * without prior written authorization from Intel. * * 4. Disclaimer and Export Compliance * * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A * PARTICULAR PURPOSE. * * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY * LIMITED REMEDY. * * 4.3. Licensee shall not export, either directly or indirectly, any of this * software or system incorporating such software without first obtaining any * required license or other approval from the U. S. Department of Commerce or * any other agency or department of the United States Government. In the * event Licensee exports any such software from the United States or * re-exports any such software from a foreign destination, Licensee shall * ensure that the distribution and export/re-export of the software is in * compliance with all laws, regulations, orders, or other restrictions of the * U.S. Export Administration Regulations. Licensee agrees that neither it nor * any of its subsidiaries will export/re-export any technical data, process, * software, or service, directly or indirectly, to any country for which the * United States government or any agency thereof requires an export license, * other governmental approval, or letter of assurance, without first obtaining * such license, approval or letter. * *****************************************************************************/ #include "acpi.h" #include #include #define _COMPONENT ACPI_OS_SERVICES ACPI_MODULE_NAME ("oslibcfs") /******************************************************************************* * * FUNCTION: AcpiOsOpenFile * * PARAMETERS: Path - File path * Modes - File operation type * * RETURN: File descriptor. * * DESCRIPTION: Open a file for reading (ACPI_FILE_READING) or/and writing * (ACPI_FILE_WRITING). * ******************************************************************************/ ACPI_FILE AcpiOsOpenFile ( const char *Path, UINT8 Modes) { ACPI_FILE File; UINT32 i = 0; char ModesStr[4]; if (Modes & ACPI_FILE_READING) { ModesStr[i++] = 'r'; } if (Modes & ACPI_FILE_WRITING) { ModesStr[i++] = 'w'; } if (Modes & ACPI_FILE_BINARY) { ModesStr[i++] = 'b'; } ModesStr[i++] = '\0'; File = fopen (Path, ModesStr); if (!File) { perror ("Could not open file"); } return (File); } /******************************************************************************* * * FUNCTION: AcpiOsCloseFile * * PARAMETERS: File - An open file descriptor * * RETURN: None. * * DESCRIPTION: Close a file opened via AcpiOsOpenFile. * ******************************************************************************/ void AcpiOsCloseFile ( ACPI_FILE File) { fclose (File); } /******************************************************************************* * * FUNCTION: AcpiOsReadFile * * PARAMETERS: File - An open file descriptor * Buffer - Data buffer * Size - Data block size * Count - Number of data blocks * * RETURN: Number of bytes actually read. * * DESCRIPTION: Read from a file. * ******************************************************************************/ int AcpiOsReadFile ( ACPI_FILE File, void *Buffer, ACPI_SIZE Size, ACPI_SIZE Count) { int Length; Length = fread (Buffer, Size, Count, File); if (Length < 0) { perror ("Error reading file"); } return (Length); } /******************************************************************************* * * FUNCTION: AcpiOsWriteFile * * PARAMETERS: File - An open file descriptor * Buffer - Data buffer * Size - Data block size * Count - Number of data blocks * * RETURN: Number of bytes actually written. * * DESCRIPTION: Write to a file. * ******************************************************************************/ int AcpiOsWriteFile ( ACPI_FILE File, void *Buffer, ACPI_SIZE Size, ACPI_SIZE Count) { int Length; Length = fwrite (Buffer, Size, Count, File); if (Length < 0) { perror ("Error writing file"); } return (Length); } /******************************************************************************* * * FUNCTION: AcpiOsGetFileOffset * * PARAMETERS: File - An open file descriptor * * RETURN: Current file pointer position. * * DESCRIPTION: Get current file offset. * ******************************************************************************/ long AcpiOsGetFileOffset ( ACPI_FILE File) { long Offset; Offset = ftell (File); return (Offset); } /******************************************************************************* * * FUNCTION: AcpiOsSetFileOffset * * PARAMETERS: File - An open file descriptor * Offset - New file offset * From - From begin/end of file * * RETURN: Status * * DESCRIPTION: Set current file offset. * ******************************************************************************/ ACPI_STATUS AcpiOsSetFileOffset ( ACPI_FILE File, long Offset, UINT8 From) { int Ret = 0; if (From == ACPI_FILE_BEGIN) { Ret = fseek (File, Offset, SEEK_SET); } if (From == ACPI_FILE_END) { Ret = fseek (File, Offset, SEEK_END); } if (Ret < 0) { return (AE_ERROR); } else { return (AE_OK); } }