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/*
* Copyright (c) 1997-1999 University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
/*
* Switch to a real tty driver for the console. If we find a tty driver
* to use, get it ready to use as a console device. Then ask the C
* library (well, POSIX library) to replace its notion of the console
* with the new one.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <oskit/io/ttystream.h>
#include <oskit/fs/file.h> /* XXX OSKIT_O_RDWR */
#include <oskit/dev/dev.h>
#include <oskit/dev/tty.h>
#include <oskit/io/asyncio.h>
#include <oskit/io/posixio.h>
#include <oskit/clientos.h>
#ifdef PTHREADS
#include <oskit/com/wrapper.h>
#include <oskit/threads/pthread.h>
#define start_console start_console_pthreads
#endif
/*
* Default settings for the console TTY.
*/
#define TTYDEF_IFLAG \
(OSKIT_BRKINT|OSKIT_ICRNL|OSKIT_IXON|OSKIT_IXANY)
#define TTYDEF_OFLAG \
(OSKIT_OPOST|OSKIT_ONLCR)
#define TTYDEF_LFLAG \
(OSKIT_ECHO|\
OSKIT_ICANON|OSKIT_ISIG|OSKIT_IEXTEN|OSKIT_ECHOE|OSKIT_ECHOK)
#define TTYDEF_CFLAG \
(OSKIT_CREAD|OSKIT_CS8|OSKIT_HUPCL)
void
start_console(void)
{
oskit_ttydev_t **ttydev;
oskit_ttystream_t *ttystrm;
oskit_termios_t termios;
int rc, ndev, i, enabled;
#ifdef PTHREADS
osenv_process_lock();
#endif
/*
* Find all TTY device nodes.
*/
ndev = osenv_device_lookup(&oskit_ttydev_iid, (void***)&ttydev);
if (ndev <= 0)
panic("no TTY devices found!");
/*
* Open the first TTY device found. I am going to say thats
* the console device the application wanted to use.
*/
rc = oskit_ttydev_open(ttydev[0], OSKIT_O_RDWR, &ttystrm);
if (rc)
panic("unable to open tty0: %d", rc);
/*
* Okay, release our references.
*/
for (i = 0; i < ndev; i++)
oskit_ttydev_release(ttydev[i]);
/*
* Set properties for a normal tty.
*/
rc = oskit_ttystream_getattr(ttystrm, &termios);
if (rc)
panic("unable to getattr: %d", rc);
termios.iflag = TTYDEF_IFLAG;
termios.oflag = TTYDEF_OFLAG;
termios.cflag = TTYDEF_CFLAG;
termios.lflag = TTYDEF_LFLAG;
termios.cc[3] = 8; /* ^H */
rc = oskit_ttystream_setattr(ttystrm, OSKIT_TCSANOW, &termios);
if (rc)
panic("unable to setattr: %d", rc);
#ifdef PTHREADS
/*
* Need to wrap the stream in a thread-safe wrapper.
*/
{
oskit_ttystream_t *wrapped_ttystrm;
rc = oskit_wrap_ttystream(ttystrm,
(void (*)(void *))osenv_process_lock,
(void (*)(void *))osenv_process_unlock,
0, &wrapped_ttystrm);
if (rc)
panic("oskit_wrap_ttystream() failed: "
"errno 0x%x\n", rc);
/* Don't need the original anymore, the wrapper has a ref. */
oskit_ttystream_release(ttystrm);
ttystrm = wrapped_ttystrm;
osenv_process_unlock();
}
#endif
/*
* Okay, now replace the default console stream.
*/
oskit_clientos_setconsole(ttystrm);
/*
* Release our reference since setconsole took one.
*/
oskit_ttystream_release(ttystrm);
if ((enabled = osenv_intr_enabled()))
osenv_intr_disable();
/*
* Okay, tell the C library to switch over!
*/
printf("Reconstituting stdio streams to console TTY...\n");
oskit_console_reinit();
if (enabled)
osenv_intr_enable();
}
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