mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-11 06:26:40 +07:00
93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
|
/*
|
||
|
* Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
|
||
|
* Licensed under the GPL
|
||
|
*/
|
||
|
|
||
|
#include <stdio.h>
|
||
|
#include <termios.h>
|
||
|
#include <errno.h>
|
||
|
#include <unistd.h>
|
||
|
#include "chan_user.h"
|
||
|
#include "user_util.h"
|
||
|
#include "user.h"
|
||
|
#include "os.h"
|
||
|
|
||
|
struct tty_chan {
|
||
|
char *dev;
|
||
|
int raw;
|
||
|
struct termios tt;
|
||
|
};
|
||
|
|
||
|
static void *tty_chan_init(char *str, int device, struct chan_opts *opts)
|
||
|
{
|
||
|
struct tty_chan *data;
|
||
|
|
||
|
if(*str != ':'){
|
||
|
printk("tty_init : channel type 'tty' must specify "
|
||
|
"a device\n");
|
||
|
return(NULL);
|
||
|
}
|
||
|
str++;
|
||
|
|
||
|
data = um_kmalloc(sizeof(*data));
|
||
|
if(data == NULL)
|
||
|
return(NULL);
|
||
|
*data = ((struct tty_chan) { .dev = str,
|
||
|
.raw = opts->raw });
|
||
|
|
||
|
return(data);
|
||
|
}
|
||
|
|
||
|
static int tty_open(int input, int output, int primary, void *d,
|
||
|
char **dev_out)
|
||
|
{
|
||
|
struct tty_chan *data = d;
|
||
|
int fd, err;
|
||
|
|
||
|
fd = os_open_file(data->dev, of_set_rw(OPENFLAGS(), input, output), 0);
|
||
|
if(fd < 0) return(fd);
|
||
|
if(data->raw){
|
||
|
CATCH_EINTR(err = tcgetattr(fd, &data->tt));
|
||
|
if(err)
|
||
|
return(err);
|
||
|
|
||
|
err = raw(fd);
|
||
|
if(err)
|
||
|
return(err);
|
||
|
}
|
||
|
|
||
|
*dev_out = data->dev;
|
||
|
return(fd);
|
||
|
}
|
||
|
|
||
|
static int tty_console_write(int fd, const char *buf, int n, void *d)
|
||
|
{
|
||
|
struct tty_chan *data = d;
|
||
|
|
||
|
return(generic_console_write(fd, buf, n, &data->tt));
|
||
|
}
|
||
|
|
||
|
struct chan_ops tty_ops = {
|
||
|
.type = "tty",
|
||
|
.init = tty_chan_init,
|
||
|
.open = tty_open,
|
||
|
.close = generic_close,
|
||
|
.read = generic_read,
|
||
|
.write = generic_write,
|
||
|
.console_write = tty_console_write,
|
||
|
.window_size = generic_window_size,
|
||
|
.free = generic_free,
|
||
|
.winch = 0,
|
||
|
};
|
||
|
|
||
|
/*
|
||
|
* 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:
|
||
|
*/
|