mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
fd9bc53b99
We were using a long series of (stupid) wrappers which all call generic_console_write(). Since the wrappers only change the 4th param, which is unused by the called proc, remove them and call generic_console_write() directly. If needed at any time in the future to reintroduce this stuff, the member could be moved to a generic struct, to avoid this duplicated handling. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
157 lines
3.2 KiB
C
157 lines
3.2 KiB
C
/*
|
|
* Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <termios.h>
|
|
#include "chan_user.h"
|
|
#include "user.h"
|
|
#include "user_util.h"
|
|
#include "kern_util.h"
|
|
#include "os.h"
|
|
|
|
struct pty_chan {
|
|
void (*announce)(char *dev_name, int dev);
|
|
int dev;
|
|
int raw;
|
|
struct termios tt;
|
|
char dev_name[sizeof("/dev/pts/0123456\0")];
|
|
};
|
|
|
|
static void *pty_chan_init(char *str, int device, struct chan_opts *opts)
|
|
{
|
|
struct pty_chan *data;
|
|
|
|
data = um_kmalloc(sizeof(*data));
|
|
if(data == NULL) return(NULL);
|
|
*data = ((struct pty_chan) { .announce = opts->announce,
|
|
.dev = device,
|
|
.raw = opts->raw });
|
|
return(data);
|
|
}
|
|
|
|
static int pts_open(int input, int output, int primary, void *d,
|
|
char **dev_out)
|
|
{
|
|
struct pty_chan *data = d;
|
|
char *dev;
|
|
int fd, err;
|
|
|
|
fd = get_pty();
|
|
if(fd < 0){
|
|
err = -errno;
|
|
printk("open_pts : Failed to open pts\n");
|
|
return err;
|
|
}
|
|
if(data->raw){
|
|
CATCH_EINTR(err = tcgetattr(fd, &data->tt));
|
|
if(err)
|
|
return(err);
|
|
|
|
err = raw(fd);
|
|
if(err)
|
|
return(err);
|
|
}
|
|
|
|
dev = ptsname(fd);
|
|
sprintf(data->dev_name, "%s", dev);
|
|
*dev_out = data->dev_name;
|
|
if (data->announce)
|
|
(*data->announce)(dev, data->dev);
|
|
return(fd);
|
|
}
|
|
|
|
static int getmaster(char *line)
|
|
{
|
|
char *pty, *bank, *cp;
|
|
int master, err;
|
|
|
|
pty = &line[strlen("/dev/ptyp")];
|
|
for (bank = "pqrs"; *bank; bank++) {
|
|
line[strlen("/dev/pty")] = *bank;
|
|
*pty = '0';
|
|
if (os_stat_file(line, NULL) < 0)
|
|
break;
|
|
for (cp = "0123456789abcdef"; *cp; cp++) {
|
|
*pty = *cp;
|
|
master = os_open_file(line, of_rdwr(OPENFLAGS()), 0);
|
|
if (master >= 0) {
|
|
char *tp = &line[strlen("/dev/")];
|
|
|
|
/* verify slave side is usable */
|
|
*tp = 't';
|
|
err = os_access(line, OS_ACC_RW_OK);
|
|
*tp = 'p';
|
|
if(err == 0) return(master);
|
|
(void) os_close_file(master);
|
|
}
|
|
}
|
|
}
|
|
return(-1);
|
|
}
|
|
|
|
static int pty_open(int input, int output, int primary, void *d,
|
|
char **dev_out)
|
|
{
|
|
struct pty_chan *data = d;
|
|
int fd, err;
|
|
char dev[sizeof("/dev/ptyxx\0")] = "/dev/ptyxx";
|
|
|
|
fd = getmaster(dev);
|
|
if(fd < 0)
|
|
return(-errno);
|
|
|
|
if(data->raw){
|
|
err = raw(fd);
|
|
if(err)
|
|
return(err);
|
|
}
|
|
|
|
if(data->announce) (*data->announce)(dev, data->dev);
|
|
|
|
sprintf(data->dev_name, "%s", dev);
|
|
*dev_out = data->dev_name;
|
|
return(fd);
|
|
}
|
|
|
|
struct chan_ops pty_ops = {
|
|
.type = "pty",
|
|
.init = pty_chan_init,
|
|
.open = pty_open,
|
|
.close = generic_close,
|
|
.read = generic_read,
|
|
.write = generic_write,
|
|
.console_write = generic_console_write,
|
|
.window_size = generic_window_size,
|
|
.free = generic_free,
|
|
.winch = 0,
|
|
};
|
|
|
|
struct chan_ops pts_ops = {
|
|
.type = "pts",
|
|
.init = pty_chan_init,
|
|
.open = pts_open,
|
|
.close = generic_close,
|
|
.read = generic_read,
|
|
.write = generic_write,
|
|
.console_write = generic_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:
|
|
*/
|