blob: c24cca47b1ceb37010a3d4bc9aee3ae2dca9fc26 [file] [log] [blame]
/******************************************************************************
*
* Module Name: oslibcfs - C library OSL for file I/O
*
*****************************************************************************/
/*
* 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 <contrib/dev/acpica/include/acpi.h>
#include <stdio.h>
#include <stdarg.h>
#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);
}
}