| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com) |
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| 4 | */ |
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| 5 | |
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| 6 | #ifndef __CHAN_USER_H__ |
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| 7 | #define __CHAN_USER_H__ |
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| 8 | |
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| 9 | #include <init.h> |
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| 10 | #include <linux/types.h> |
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| 11 | |
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| 12 | struct chan_opts { |
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| 13 | void (*const announce)(char *dev_name, int dev); |
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| 14 | char *xterm_title; |
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| 15 | int raw; |
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| 16 | }; |
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| 17 | |
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| 18 | struct chan_ops { |
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| 19 | char *type; |
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| 20 | void *(*init)(char *, int, const struct chan_opts *); |
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| 21 | int (*open)(int, int, int, void *, char **); |
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| 22 | void (*close)(int, void *); |
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| 23 | int (*read)(int, __u8 *, void *); |
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| 24 | int (*write)(int, const __u8 *, size_t, void *); |
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| 25 | int (*console_write)(int, const char *, int); |
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| 26 | int (*window_size)(int, void *, unsigned short *, unsigned short *); |
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| 27 | void (*free)(void *); |
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| 28 | int winch; |
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| 29 | }; |
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| 30 | |
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| 31 | extern const struct chan_ops fd_ops, null_ops, port_ops, pts_ops, pty_ops, |
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| 32 | tty_ops, xterm_ops; |
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| 33 | |
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| 34 | extern void generic_close(int fd, void *unused); |
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| 35 | extern int generic_read(int fd, __u8 *c_out, void *unused); |
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| 36 | extern int generic_write(int fd, const __u8 *buf, size_t n, void *unused); |
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| 37 | extern int generic_console_write(int fd, const char *buf, int n); |
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| 38 | extern int generic_window_size(int fd, void *unused, unsigned short *rows_out, |
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| 39 | unsigned short *cols_out); |
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| 40 | extern void generic_free(void *data); |
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| 41 | |
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| 42 | struct tty_port; |
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| 43 | extern void register_winch(int fd, struct tty_port *port); |
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| 44 | extern void register_winch_irq(int fd, int tty_fd, int pid, |
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| 45 | struct tty_port *port, unsigned long stack); |
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| 46 | |
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| 47 | #define __channel_help(fn, prefix) \ |
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| 48 | __uml_help(fn, prefix "[0-9]*=<channel description>\n" \ |
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| 49 | " Attach a console or serial line to a host channel. See\n" \ |
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| 50 | " http://user-mode-linux.sourceforge.net/old/input.html for a complete\n" \ |
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| 51 | " description of this switch.\n\n" \ |
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| 52 | ); |
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| 53 | |
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| 54 | #endif |
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| 55 | |
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