fileserv.cpp File Reference

#include <Fs\vfs.h>
#include <Fs\Fat\Fat.h>
#include <Mm\pmmngr.h>
#include <Mm\vmmngr.h>
#include <Mm\kmalloc.h>
#include <process.h>
#include <Hal\x86_64_sched.h>
#include <Hal\serial.h>
#include <aucon.h>
#include <_null.h>
#include <Hal\x86_64_hal.h>
#include <Fs\pipe.h>

Include dependency graph for fileserv.cpp:

Functions
int	OpenFile (char *filename, int mode)
	OpenFile – opens a file for user process.
int	FileSetOffset (int fd, size_t offset)
	FileSetOffset – set a offset inorder to read the specific position of the file.
size_t	ReadFile (int fd, void *buffer, size_t length)
	ReadFile – reads a file into given buffer.
size_t	WriteFile (int fd, void *buffer, size_t length)
	WriteFile – write system call.
int	CreateDir (char *filename)
	CreateDir – creates a directory.
int	RemoveFile (char *pathname)
	RemoveFile – remove a directory or file.
int	CloseFile (int fd)
	CloseFile – closes a general file.
int	FileIoControl (int fd, int code, void *arg)
	FileIoControl – controls the file through I/O code.
int	FileStat (int fd, void *buf)
	FileStat – writes information related to file.
int	OpenDir (char *filename)
	OpenDir – opens a directory.
int	ReadDir (int dirfd, void *dirent)
	ReadDir – reads a directory entry.
int	ProcessGetFileDesc (const char *filename)
	ProcessGetFileDesc – Searches all process file descriptor entries for specific filename fd.

Function Documentation

CloseFile()

int CloseFile

(

int

fd

)

CloseFile – closes a general file.

Parameters

fd	– file descriptor to close

CreateDir()

int CreateDir

(

char *

filename

)

CreateDir – creates a directory.

Parameters

filename

– name of the directory

FileIoControl()

int FileIoControl	(	int	fd,
		int	code,
		void *	arg
	)

FileIoControl – controls the file through I/O code.

Parameters

fd	– file descriptor
code	– code to pass
arg	– argument to pass

FileSetOffset()

int FileSetOffset	(	int	fd,
		size_t	offset
	)

FileSetOffset – set a offset inorder to read the specific position of the file.

Parameters

fd	– File descriptor
offset	– offset in bytes

FileStat()

int FileStat	(	int	fd,
		void *	buf
	)

FileStat – writes information related to file.

Parameters

fd	– file descriptor
buf	– Pointer to file structure

OpenDir()

int OpenDir

(

char *

filename

)

OpenDir – opens a directory.

Parameters

filename

– name of the directory

OpenFile()

int OpenFile	(	char *	filename,
		int	mode
	)

OpenFile – opens a file for user process.

BSD 2-Clause License

Copyright (c) 2022-2023, Manas Kamal Choudhury 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.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.

ProcessGetFileDesc()

int ProcessGetFileDesc

(

const char *

filename

)

ProcessGetFileDesc – Searches all process file descriptor entries for specific filename fd.

ReadDir()

int ReadDir	(	int	dirfd,
		void *	dirent
	)

ReadDir – reads a directory entry.

Parameters

dirfd	– directory file descriptor
dirent	– aurora directory entry struct

ReadFile()

size_t ReadFile	(	int	fd,
		void *	buffer,
		size_t	length
	)

ReadFile – reads a file into given buffer.

Parameters

fd	– file descriptor
buffer	– buffer where to put the data
length	– length in bytes

RemoveFile()

int RemoveFile

(

char *

pathname

)

RemoveFile – remove a directory or file.

Parameters

dirname

– directory name

WriteFile()

size_t WriteFile	(	int	fd,
		void *	buffer,
		size_t	length
	)

WriteFile – write system call.

Parameters

fd	– file descriptor
buffer	– buffer to write
length	– length in bytes