?? rtl_posixio.h
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/* * RTLinux POSIX IO level * * Copyright (C) 1999 FSM Labs (http://www.fsmlabs.com/) * Written by Michael Barabanov <baraban@fsmlabs.com> */#ifndef __RTL_POSIXIO_H__#define __RTL_POSIXIO_H__#ifdef __KERNEL__#include <linux/types.h>#include <linux/fs.h>#include <rtl_conf.h>// may disappear in future versionsextern int rtl_get_minor(int fd);/* typedef int RTL_INODE; *//* we only need the minor number */#define RTL_MINOR_FROM_FILEPTR(fptr) ((fptr)->f_minor)struct rtl_file_operations;struct rtl_file { struct rtl_file_operations *f_op; int f_minor; int f_flags; loff_t f_pos;};struct rtl_file_operations { loff_t (*llseek) (struct rtl_file *, loff_t, int); ssize_t (*read) (struct rtl_file *, char *, size_t, loff_t *); ssize_t (*write) (struct rtl_file *, const char *, size_t, loff_t *); int (*ioctl) (struct rtl_file *, unsigned int, unsigned long); int (*mmap) (struct rtl_file *, void *start, size_t length, int prot , int flags, off_t offset, caddr_t *result); int (*open) (struct rtl_file *); int (*release) (struct rtl_file *);};extern int rtl_register_rtldev(unsigned int, const char *, struct rtl_file_operations *);extern int rtl_unregister_rtldev(unsigned int major, const char * name);/* compatibility */#define rtl_register_chrdev rtl_register_rtldev#define rtl_unregister_chrdev rtl_unregister_rtldev#endif#endif
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