diff options
Diffstat (limited to 'source/os_specific/service_layers/oslibcfs.c')
| -rw-r--r-- | source/os_specific/service_layers/oslibcfs.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/source/os_specific/service_layers/oslibcfs.c b/source/os_specific/service_layers/oslibcfs.c new file mode 100644 index 000000000000..3bb55bb94cc0 --- /dev/null +++ b/source/os_specific/service_layers/oslibcfs.c @@ -0,0 +1,251 @@ +/****************************************************************************** + * + * Module Name: oslibcfs - C library OSL for file IO + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2014, 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 "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; + char ModesStr[4]; + UINT32 i = 0; + + 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 - File descriptor + * + * RETURN: None. + * + * DESCRIPTION: Close a file. + * + ******************************************************************************/ + +void +AcpiOsCloseFile ( + ACPI_FILE File) +{ + fclose (File); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiOsReadFile + * + * PARAMETERS: File - File descriptor + * Buffer - Data buffer + * Size - Data block size + * Count - Number of data blocks + * + * RETURN: Size of successfully read buffer. + * + * DESCRIPTION: Read 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 - File descriptor + * Buffer - Data buffer + * Size - Data block size + * Count - Number of data blocks + * + * RETURN: Size of successfully written buffer. + * + * DESCRIPTION: Write 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 - File descriptor + * + * RETURN: Size of current position. + * + * DESCRIPTION: Get current file offset. + * + ******************************************************************************/ + +long +AcpiOsGetFileOffset ( + ACPI_FILE File) +{ + long Offset; + + Offset = ftell (File); + + return (Offset); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiOsSetFileOffset + * + * PARAMETERS: File - File descriptor + * Offset - 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); + } +} |