1 /* 2 * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com) 3 * Licensed under the GPL 4 */ 5 6 #ifndef __CHAN_USER_H__ 7 #define __CHAN_USER_H__ 8 9 #include <init.h> 10 11 struct chan_opts { 12 void (*const announce)(char *dev_name, int dev); 13 char *xterm_title; 14 const int raw; 15 }; 16 17 struct chan_ops { 18 char *type; 19 void *(*init)(char *, int, const struct chan_opts *); 20 int (*open)(int, int, int, void *, char **); 21 void (*close)(int, void *); 22 int (*read)(int, char *, void *); 23 int (*write)(int, const char *, int, void *); 24 int (*console_write)(int, const char *, int); 25 int (*window_size)(int, void *, unsigned short *, unsigned short *); 26 void (*free)(void *); 27 int winch; 28 }; 29 30 extern const struct chan_ops fd_ops, null_ops, port_ops, pts_ops, pty_ops, 31 tty_ops, xterm_ops; 32 33 extern void generic_close(int fd, void *unused); 34 extern int generic_read(int fd, char *c_out, void *unused); 35 extern int generic_write(int fd, const char *buf, int n, void *unused); 36 extern int generic_console_write(int fd, const char *buf, int n); 37 extern int generic_window_size(int fd, void *unused, unsigned short *rows_out, 38 unsigned short *cols_out); 39 extern void generic_free(void *data); 40 41 struct tty_port; 42 extern void register_winch(int fd, struct tty_port *port); 43 extern void register_winch_irq(int fd, int tty_fd, int pid, 44 struct tty_port *port, unsigned long stack); 45 46 #define __channel_help(fn, prefix) \ 47 __uml_help(fn, prefix "[0-9]*=<channel description>\n" \ 48 " Attach a console or serial line to a host channel. See\n" \ 49 " http://user-mode-linux.sourceforge.net/old/input.html for a complete\n" \ 50 " description of this switch.\n\n" \ 51 ); 52 53 #endif 54