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/*
* File functions
*
* Copyright (c) 2006-2009, Joachim Metz <forensics@hoffmannbv.nl>,
* Hoffmann Investigations.
*
* Refer to AUTHORS for acknowledgements.
*
* This software is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined( _LIBSYSTEM_FILE_H )
#define _LIBSYSTEM_FILE_H
#include <common.h>
#include <types.h>
#include <liberror.h>
#include "libsystem_string.h"
#if defined( __cplusplus )
extern "C" {
#endif
/* The file access flags
* bit 1 set to 1 for read access
* bit 2 set to 1 for write access
* bit 3 set to 1 to truncate an existing file on write
* bit 4-8 not used
*/
#define LIBSYSTEM_FILE_FLAG_READ 0x01
#define LIBSYSTEM_FILE_FLAG_WRITE 0x02
#define LIBSYSTEM_FILE_FLAG_TRUNCATE 0x04
/* The file access macros
*/
#define LIBSYSTEM_FILE_OPEN_READ ( LIBSYSTEM_FILE_FLAG_READ )
#define LIBSYSTEM_FILE_OPEN_WRITE ( LIBSYSTEM_FILE_FLAG_WRITE )
#define LIBSYSTEM_FILE_OPEN_READ_WRITE ( LIBSYSTEM_FILE_FLAG_READ | LIBSYSTEM_FILE_FLAG_WRITE )
#define LIBSYSTEM_FILE_OPEN_WRITE_TRUNCATE ( LIBSYSTEM_FILE_FLAG_WRITE | LIBSYSTEM_FILE_FLAG_TRUNCATE )
#define LIBSYSTEM_FILE_OPEN_READ_WRITE_TRUNCATE ( LIBSYSTEM_FILE_FLAG_READ | LIBSYSTEM_FILE_FLAG_WRITE | LIBSYSTEM_FILE_FLAG_TRUNCATE )
/* Platform specific macros
* */
#if defined( _MSC_VER )
#define LIBSYSTEM_FILE_LARGE_INTEGER_ZERO { 0, 0 }
#elif defined( __BORLANDC__ )
#define LIBSYSTEM_FILE_LARGE_INTEGER_ZERO { 0 }
#endif
#if defined( WINAPI) && !defined( USE_CRT_FUNCTIONS )
typedef HANDLE libsystem_file_handle_t;
#define LIBSYSTEM_FILE_HANDLE_EMPTY INVALID_HANDLE_VALUE
#else
typedef int libsystem_file_handle_t;
#define LIBSYSTEM_FILE_HANDLE_EMPTY -1
#endif
#if defined( HAVE_OPEN ) || defined( WINAPI )
int libsystem_file_open(
libsystem_file_handle_t *file_handle,
const libsystem_character_t *filename,
int flags,
liberror_error_t **error );
#endif
#if defined( HAVE_CLOSE ) || defined( WINAPI )
int libsystem_file_close(
libsystem_file_handle_t *file_handle,
liberror_error_t **error );
#endif
#if defined( HAVE_READ ) || defined( WINAPI )
ssize_t libsystem_file_read(
libsystem_file_handle_t file_handle,
uint8_t *buffer,
size_t size,
liberror_error_t **error );
#endif
#if defined( HAVE_WRITE ) || defined( WINAPI )
ssize_t libsystem_file_write(
libsystem_file_handle_t file_handle,
uint8_t *buffer,
size_t size,
liberror_error_t **error );
#endif
#if defined( HAVE_LSEEK ) || defined( WINAPI )
off64_t libsystem_file_seek_offset(
libsystem_file_handle_t file_handle,
off64_t offset,
int whence,
liberror_error_t **error );
#endif
#if ( defined( HAVE_OPEN ) && defined( HAVE_CLOSE ) ) || defined( WINAPI )
int libsystem_file_exists(
const libsystem_character_t *filename,
liberror_error_t **error );
#endif
#if defined( __cplusplus )
}
#endif
#endif
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