e4dcee8099
This patch adds support for throttling and unthrottling input when the tty driver can't handle it. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/*
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* Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#ifndef __CHAN_KERN_H__
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#define __CHAN_KERN_H__
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#include "linux/tty.h"
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#include "linux/list.h"
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#include "linux/console.h"
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#include "chan_user.h"
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#include "line.h"
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struct chan {
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struct list_head list;
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struct list_head free_list;
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struct line *line;
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char *dev;
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unsigned int primary:1;
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unsigned int input:1;
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unsigned int output:1;
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unsigned int opened:1;
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unsigned int enabled:1;
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int fd;
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struct chan_ops *ops;
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void *data;
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};
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extern void chan_interrupt(struct list_head *chans, struct work_struct *task,
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struct tty_struct *tty, int irq);
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extern int parse_chan_pair(char *str, struct line *line, int device,
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struct chan_opts *opts);
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extern int open_chan(struct list_head *chans);
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extern int write_chan(struct list_head *chans, const char *buf, int len,
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int write_irq);
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extern int console_write_chan(struct list_head *chans, const char *buf,
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int len);
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extern int console_open_chan(struct line *line, struct console *co,
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struct chan_opts *opts);
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extern void deactivate_chan(struct list_head *chans, int irq);
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extern void reactivate_chan(struct list_head *chans, int irq);
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extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);
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extern void enable_chan(struct line *line);
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extern void close_chan(struct list_head *chans, int delay_free_irq);
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extern int chan_window_size(struct list_head *chans,
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unsigned short *rows_out,
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unsigned short *cols_out);
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extern int chan_out_fd(struct list_head *chans);
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extern int chan_config_string(struct list_head *chans, char *str, int size,
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char **error_out);
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#endif
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