forked from luck/tmp_suning_uos_patched
a52f362f86
The chan_opts structure is mostly const, and needs no locking. Comment the lack of locking on the one field that can change. Make all the other fields const. It turned out that console_open_chan didn't use its chan_opts argument, so that is deleted from the function and its callers. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/*
|
|
* Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#ifndef __CHAN_USER_H__
|
|
#define __CHAN_USER_H__
|
|
|
|
#include "init.h"
|
|
|
|
struct chan_opts {
|
|
void (*const announce)(char *dev_name, int dev);
|
|
char *xterm_title;
|
|
const int raw;
|
|
const unsigned long tramp_stack;
|
|
const int in_kernel;
|
|
};
|
|
|
|
enum chan_init_pri { INIT_STATIC, INIT_ALL, INIT_ONE };
|
|
|
|
struct chan_ops {
|
|
char *type;
|
|
void *(*init)(char *, int, const struct chan_opts *);
|
|
int (*open)(int, int, int, void *, char **);
|
|
void (*close)(int, void *);
|
|
int (*read)(int, char *, void *);
|
|
int (*write)(int, const char *, int, void *);
|
|
int (*console_write)(int, const char *, int);
|
|
int (*window_size)(int, void *, unsigned short *, unsigned short *);
|
|
void (*free)(void *);
|
|
int winch;
|
|
};
|
|
|
|
extern const struct chan_ops fd_ops, null_ops, port_ops, pts_ops, pty_ops,
|
|
tty_ops, xterm_ops;
|
|
|
|
extern void generic_close(int fd, void *unused);
|
|
extern int generic_read(int fd, char *c_out, void *unused);
|
|
extern int generic_write(int fd, const char *buf, int n, void *unused);
|
|
extern int generic_console_write(int fd, const char *buf, int n);
|
|
extern int generic_window_size(int fd, void *unused, unsigned short *rows_out,
|
|
unsigned short *cols_out);
|
|
extern void generic_free(void *data);
|
|
|
|
struct tty_struct;
|
|
extern void register_winch(int fd, struct tty_struct *tty);
|
|
extern void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty);
|
|
|
|
#define __channel_help(fn, prefix) \
|
|
__uml_help(fn, prefix "[0-9]*=<channel description>\n" \
|
|
" Attach a console or serial line to a host channel. See\n" \
|
|
" http://user-mode-linux.sourceforge.net/input.html for a complete\n" \
|
|
" description of this switch.\n\n" \
|
|
);
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* Emacs will notice this stuff at the end of the file and automatically
|
|
* adjust the settings for this buffer only. This must remain at the end
|
|
* of the file.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-file-style: "linux"
|
|
* End:
|
|
*/
|