53ac6efbd8
That's EVERY SINGLE driver that has an entry in conf.c.. my next trick will be to define cdevsw[] and bdevsw[] as empty arrays and remove all those DAMNED defines as well.. Each of these drivers has a SYSINIT linker set entry that comes in very early.. and asks teh driver to add it's own entry to the two devsw[] tables. some slight reworking of the commits from yesterday (added the SYSINIT stuff and some usually wrong but token DEVFS entries to all these devices. BTW does anyone know where the 'ata' entries in conf.c actually reside? seems we don't actually have a 'ataopen() etc... If you want to add a new device in conf.c please make sure I know so I can keep it up to date too.. as before, this is all dependent on #if defined(JREMOD) (and #ifdef DEVFS in parts)
197 lines
5.2 KiB
C
197 lines
5.2 KiB
C
/*-
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* Copyright (c) 1982, 1986, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tty_tty.c 8.2 (Berkeley) 9/23/93
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* $Id: tty_tty.c,v 1.5 1995/05/30 08:06:19 rgrimes Exp $
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*/
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/*
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* Indirect driver for controlling tty.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/ioctl.h>
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#include <sys/proc.h>
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#include <sys/tty.h>
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#include <sys/vnode.h>
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#include <sys/file.h>
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#ifdef JREMOD
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#include <sys/kernel.h>
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif /*DEVFS*/
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#define CDEV_MAJOR 1
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#endif /*JREMOD*/
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#define cttyvp(p) ((p)->p_flag & P_CONTROLT ? (p)->p_session->s_ttyvp : NULL)
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/*ARGSUSED*/
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int
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cttyopen(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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struct vnode *ttyvp = cttyvp(p);
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int error;
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if (ttyvp == NULL)
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return (ENXIO);
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VOP_LOCK(ttyvp);
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#ifdef PARANOID
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/*
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* Since group is tty and mode is 620 on most terminal lines
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* and since sessions protect terminals from processes outside
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* your session, this check is probably no longer necessary.
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* Since it inhibits setuid root programs that later switch
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* to another user from accessing /dev/tty, we have decided
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* to delete this test. (mckusick 5/93)
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*/
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error = VOP_ACCESS(ttyvp,
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(flag&FREAD ? VREAD : 0) | (flag&FWRITE ? VWRITE : 0), p->p_ucred, p);
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if (!error)
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#endif /* PARANOID */
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error = VOP_OPEN(ttyvp, flag, NOCRED, p);
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VOP_UNLOCK(ttyvp);
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return (error);
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}
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/*ARGSUSED*/
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int
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cttyread(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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register struct vnode *ttyvp = cttyvp(uio->uio_procp);
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int error;
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if (ttyvp == NULL)
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return (EIO);
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VOP_LOCK(ttyvp);
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error = VOP_READ(ttyvp, uio, flag, NOCRED);
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VOP_UNLOCK(ttyvp);
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return (error);
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}
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/*ARGSUSED*/
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int
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cttywrite(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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register struct vnode *ttyvp = cttyvp(uio->uio_procp);
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int error;
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if (ttyvp == NULL)
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return (EIO);
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VOP_LOCK(ttyvp);
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error = VOP_WRITE(ttyvp, uio, flag, NOCRED);
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VOP_UNLOCK(ttyvp);
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return (error);
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}
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/*ARGSUSED*/
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int
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cttyioctl(dev, cmd, addr, flag, p)
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dev_t dev;
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int cmd;
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caddr_t addr;
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int flag;
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struct proc *p;
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{
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struct vnode *ttyvp = cttyvp(p);
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if (ttyvp == NULL)
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return (EIO);
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if (cmd == TIOCSCTTY) /* don't allow controlling tty to be set */
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return EINVAL; /* to controlling tty -- infinite recursion */
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if (cmd == TIOCNOTTY) {
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if (!SESS_LEADER(p)) {
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p->p_flag &= ~P_CONTROLT;
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return (0);
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} else
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return (EINVAL);
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}
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return (VOP_IOCTL(ttyvp, cmd, addr, flag, NOCRED, p));
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}
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/*ARGSUSED*/
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int
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cttyselect(dev, flag, p)
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dev_t dev;
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int flag;
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struct proc *p;
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{
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struct vnode *ttyvp = cttyvp(p);
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if (ttyvp == NULL)
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return (1); /* try operation to get EOF/failure */
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return (VOP_SELECT(ttyvp, flag, FREAD|FWRITE, NOCRED, p));
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}
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#ifdef JREMOD
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struct cdevsw ctty_cdevsw =
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{ cttyopen, nullclose, cttyread, cttywrite, /*1*/
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cttyioctl, nullstop, nullreset, nodevtotty,/* tty */
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cttyselect, nommap, NULL };
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static ctty_devsw_installed = 0;
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static void ctty_drvinit(void *unused)
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{
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dev_t dev;
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if( ! ctty_devsw_installed ) {
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dev = makedev(CDEV_MAJOR,0);
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cdevsw_add(&dev,&ctty_cdevsw,NULL);
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ctty_devsw_installed = 1;
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#ifdef DEVFS
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{
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int x;
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/* default for a simple device with no probe routine (usually delete this) */
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x=devfs_add_devsw(
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/* path name devsw minor type uid gid perm*/
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"/", "tty", major(dev), 0, DV_CHR, 0, 0, 0600);
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}
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}
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#endif
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}
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SYSINIT(cttydev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,ctty_drvinit,NULL)
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#endif /* JREMOD */
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