本文主要是介绍Linux驱动开发杂记(0x18) - 内核tty接口各版本的变化(二)之tty_driver.h，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
2.6.17 - 2.6.18
删除
struct tty_driver {const char *devfs_name;
}
2.6.19 - 2.6.20
修改
struct tty_operations {void (*set_termios)(struct tty_struct *tty, struct termios * old);
//改为 void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
}
struct tty_driver {struct termios init_termios; /* Initial termios *///改为 struct ktermios init_termios; /* Initial termios */struct termios **termios;struct termios **termios_locked;//改为 struct ktermios **termios;struct ktermios **termios_locked;void (*set_termios)(struct tty_struct *tty, struct termios * old);//改为 void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
}
2.6.21 - 2.6.22
添加
struct tty_operations {long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);
}
struct tty_driver {long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);
}
2.6.25 - 2.6.26
添加
extern struct tty_driver *tty_find_polling_driver(char *name, int *line);
struct tty_driver {const struct tty_operations *ops;
}
修改
struct tty_operations {void (*put_char)(struct tty_struct *tty, unsigned char ch);//改为int (*put_char)(struct tty_struct *tty, unsigned char ch);
}
struct tty_driver {long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);
}
删除
struct tty_operations {int (*write_proc)(struct file *file, const char __user *buffer,unsigned long count, void *data);
}
struct tty_driver {int (*open)(struct tty_struct * tty, struct file * filp);void (*close)(struct tty_struct * tty, struct file * filp);int (*write)(struct tty_struct * tty,const unsigned char *buf, int count);void (*put_char)(struct tty_struct *tty, unsigned char ch);void (*flush_chars)(struct tty_struct *tty);int (*write_room)(struct tty_struct *tty);int (*chars_in_buffer)(struct tty_struct *tty);int (*ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);void (*set_termios)(struct tty_struct *tty, struct ktermios * old);void (*throttle)(struct tty_struct * tty);void (*unthrottle)(struct tty_struct * tty);void (*stop)(struct tty_struct *tty);void (*start)(struct tty_struct *tty);void (*hangup)(struct tty_struct *tty);void (*break_ctl)(struct tty_struct *tty, int state);void (*flush_buffer)(struct tty_struct *tty);void (*set_ldisc)(struct tty_struct *tty);void (*wait_until_sent)(struct tty_struct *tty, int timeout);void (*send_xchar)(struct tty_struct *tty, char ch);int (*read_proc)(char *page, char **start, off_t off,int count, int *eof, void *data);int (*write_proc)(struct file *file, const char __user *buffer,unsigned long count, void *data);int (*tiocmget)(struct tty_struct *tty, struct file *file);int (*tiocmset)(struct tty_struct *tty, struct file *file,unsigned int set, unsigned int clear);
}
2.6.26 - 2.6.27
添加
struct tty_operations {int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty, struct winsize *ws);
}
修改
struct tty_operations { void (*break_ctl)(struct tty_struct *tty, int state);
//改为int (*break_ctl)(struct tty_struct *tty, int state);
}
2.6.29 - 2.6.30
添加
struct tty_operations {struct tty_struct * (*lookup)(struct tty_driver *driver, struct inode *inode, int idx);int (*install)(struct tty_driver *driver, struct tty_struct *tty);void (*remove)(struct tty_driver *driver, struct tty_struct *tty);void (*shutdown)(struct tty_struct *tty);int (*set_termiox)(struct tty_struct *tty, struct termiox *tnew);
}
struct tty_driver {struct kref kref; /* Reference management */
}
extern void tty_driver_kref_put(struct tty_driver *driver);
extern inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d);
删除
struct tty_driver {int refcount; /* for loadable tty drivers */
}
2.6.28 - 2.6.29
修改
struct tty_operations {int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty, unsigned int rows, unsigned int cols);int (*resize)(struct tty_struct *tty, struct winsize *ws);
}
2.6.29 - 2.6.30
添加
struct tty_operations {const struct file_operations *proc_fops;
}
删除
struct tty_operations {int (*read_proc)(char *page, char **start, off_t off, int count, int *eof, void *data);}
2.6.31 - 2.6.32
添加
struct tty_operations {void (*cleanup)(struct tty_struct *tty);
}
2.6.36 - 2.6.37
添加
struct tty_operations {int (*get_icount)(struct tty_struct *tty, struct serial_icounter_struct *icount);
}
2.6.38 - 2.6.39
//修改
struct tty_operations {int (*ioctl)(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg);// 改为int (*ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg);long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);// 改为long (*compat_ioctl)(struct tty_struct *tty,unsigned int cmd, unsigned long arg);int (*tiocmget)(struct tty_struct *tty, struct file *file);int (*tiocmset)(struct tty_struct *tty, struct file *file,unsigned int set, unsigned int clear);// 改为int (*tiocmget)(struct tty_struct *tty);int (*tiocmset)(struct tty_struct *tty, unsigned int set, unsigned int clear);
}
3.2 - 3.3
删除
struct tty_driver {......struct ktermios **termios_locked;......
}
3.3 - 3.4
删除
struct tty_driver {......int minor_num; /* number of *possible* devices */......
}
3.6 - 3.7
添加
struct tty_driver {......struct tty_port **ports;......
}
#define tty_alloc_driver(lines, flags)
修改
struct tty_driver {......struct cdev cdev;// 改为struct cdev *cdevs;......
}
4.2 - 4.3
修改
struct tty_driver {......struct cdev *cdevs;// 改为struct cdev **cdevs;......
}
4.5 - 4.6
修改
struct tty_operations {......struct tty_struct * (*lookup)(struct tty_driver *self, int idx);// 改为struct tty_struct * (*lookup)(struct tty_driver *self, struct file *, int idx);......
}
struct tty_struct * (*lookup)(struct tty_driver *self, int idx)
struct tty_struct * (*lookup)(struct tty_driver *self, struct file *, int idx)
4.13 - 4.14
添加
struct tty_operations {......void (*show_fdinfo)(struct tty_struct *tty, struct seq_file *m);......
}
4.17 - 4.18
添加
struct tty_operations {......int (*proc_show)(struct seq_file *, void *);......
}
删除
struct tty_operations {......const struct file_operations *proc_fops;......
}
4.19 - 4.20
添加
struct tty_operations {......int (*get_serial)(struct tty_struct *tty, struct serial_struct *p);int (*set_serial)(struct tty_struct *tty, struct serial_struct *p);......
}
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