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/*
* cyber - Add CYBER to your system
* Copyright (C) 2017 Felix Morgner
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CYBER_FILE_H
#define CYBER_FILE_H
#include <linux/fs.h>
/**
* Initialize the CYBER file
*
* @return zero on success, non-zero otherwise
*/
int cyber_file_init(void);
/**
* Shutdown the CYBER file
*/
void cyber_file_shutdown(void);
/**
* Handler for CYBER device open events
*
* @param inode The kernel inode associated with the CYBER device
* @param file The kernel file associated with the CYBER device
* @return zero on success, non-zero otherwise
*/
int cyber_file_open(struct inode * inode, struct file * file);
/**
* Handler for CYBER device read events
*
* @param file The kernel file associated with the CYBER device
* @param buffer The user-space target buffer for all the CYBER
* @param size The size of the user-space buffer
* @param offset The offset into the CYBER
* @return The number of bytes that were read, negative on error
*/
ssize_t cyber_file_read(struct file * file, char * buffer, size_t size, loff_t * offset);
/**
* Handler for CYBER device write events
*
* @param file The kernel file associated with the CYBER device
* @param buffer The user-space source buffer for all the CYBER
* @param size The size of the user-space buffer
* @param offset The offset into the CYBER
* @param The number of bytes that were written, negative on error
*/
ssize_t cyber_file_write(struct file * file, char const * buffer, size_t size, loff_t * offset);
/**
* Handler for CYBER device close events
*
* @param inode The kernel inode associated with the CYBER device
* @param file The kernel file associated with the CYBER device
* @param zero on success, non-zero otherwise
*/
int cyber_file_close(struct inode * inode, struct file * file);
#endif
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