2 * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
6 #ifndef __CHAN_USER_H__
7 #define __CHAN_USER_H__
12 void (*const announce)(char *dev_name, int dev);
17 enum chan_init_pri { INIT_STATIC, INIT_ALL, INIT_ONE };
21 void *(*init)(char *, int, const struct chan_opts *);
22 int (*open)(int, int, int, void *, char **);
23 void (*close)(int, void *);
24 int (*read)(int, char *, void *);
25 int (*write)(int, const char *, int, void *);
26 int (*console_write)(int, const char *, int);
27 int (*window_size)(int, void *, unsigned short *, unsigned short *);
32 extern const struct chan_ops fd_ops, null_ops, port_ops, pts_ops, pty_ops,
35 extern void generic_close(int fd, void *unused);
36 extern int generic_read(int fd, char *c_out, void *unused);
37 extern int generic_write(int fd, const char *buf, int n, void *unused);
38 extern int generic_console_write(int fd, const char *buf, int n);
39 extern int generic_window_size(int fd, void *unused, unsigned short *rows_out,
40 unsigned short *cols_out);
41 extern void generic_free(void *data);
44 extern void register_winch(int fd, struct tty_struct *tty);
45 extern void register_winch_irq(int fd, int tty_fd, int pid,
46 struct tty_struct *tty, unsigned long stack);
48 #define __channel_help(fn, prefix) \
49 __uml_help(fn, prefix "[0-9]*=<channel description>\n" \
50 " Attach a console or serial line to a host channel. See\n" \
51 " http://user-mode-linux.sourceforge.net/input.html for a complete\n" \
52 " description of this switch.\n\n" \