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tty_60.c revision 1.3.4.2 
      1  1.3.4.2  tls /*	$NetBSD: tty_60.c,v 1.3.4.2 2012/11/20 03:01:53 tls Exp $	*/
      2  1.3.4.2  tls 
      3  1.3.4.2  tls /*-
      4  1.3.4.2  tls  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      5  1.3.4.2  tls  * All rights reserved.
      6  1.3.4.2  tls  *
      7  1.3.4.2  tls  * This code is derived from software contributed to The NetBSD Foundation
      8  1.3.4.2  tls  * by Alan Barrett
      9  1.3.4.2  tls  *
     10  1.3.4.2  tls  * Redistribution and use in source and binary forms, with or without
     11  1.3.4.2  tls  * modification, are permitted provided that the following conditions
     12  1.3.4.2  tls  * are met:
     13  1.3.4.2  tls  * 1. Redistributions of source code must retain the above copyright
     14  1.3.4.2  tls  *    notice, this list of conditions and the following disclaimer.
     15  1.3.4.2  tls  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.3.4.2  tls  *    notice, this list of conditions and the following disclaimer in the
     17  1.3.4.2  tls  *    documentation and/or other materials provided with the distribution.
     18  1.3.4.2  tls  *
     19  1.3.4.2  tls  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.3.4.2  tls  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.3.4.2  tls  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.3.4.2  tls  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.3.4.2  tls  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.3.4.2  tls  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.3.4.2  tls  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.3.4.2  tls  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.3.4.2  tls  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.3.4.2  tls  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.3.4.2  tls  * POSSIBILITY OF SUCH DAMAGE.
     30  1.3.4.2  tls  */
     31  1.3.4.2  tls 
     32  1.3.4.2  tls #include <sys/cdefs.h>
     33  1.3.4.2  tls __KERNEL_RCSID(0, "$NetBSD: tty_60.c,v 1.3.4.2 2012/11/20 03:01:53 tls Exp $");
     34  1.3.4.2  tls 
     35  1.3.4.2  tls #if defined(_KERNEL_OPT)
     36  1.3.4.2  tls #include "opt_compat_netbsd.h"
     37  1.3.4.2  tls #endif
     38  1.3.4.2  tls 
     39  1.3.4.2  tls #include <sys/types.h>
     40  1.3.4.2  tls 
     41  1.3.4.2  tls #include <sys/conf.h>
     42  1.3.4.2  tls #include <sys/errno.h>
     43  1.3.4.2  tls #include <sys/systm.h>
     44  1.3.4.2  tls 
     45  1.3.4.2  tls #include <sys/tty.h>
     46  1.3.4.2  tls #include <compat/sys/ttycom.h>
     47  1.3.4.2  tls 
     48  1.3.4.2  tls #ifdef COMPAT_60
     49  1.3.4.2  tls 
     50  1.3.4.2  tls /* convert struct ptmget to struct compat_60_ptmget */
     51  1.3.4.2  tls static int
     52  1.3.4.2  tls ptmget_to_ptmget60(struct ptmget *pg, struct compat_60_ptmget *pg60)
     53  1.3.4.2  tls {
     54  1.3.4.2  tls 	memset(pg60, 0, sizeof(*pg60));
     55  1.3.4.2  tls 	pg60->cfd = pg->cfd;
     56  1.3.4.2  tls 	pg60->sfd = pg->sfd;
     57  1.3.4.2  tls 	strlcpy(pg60->cn, pg->cn, sizeof(pg60->cn));
     58  1.3.4.2  tls 	strlcpy(pg60->sn, pg->sn, sizeof(pg60->sn));
     59  1.3.4.2  tls 	if (strlen(pg->cn) >= sizeof(pg60->cn)
     60  1.3.4.2  tls 	    || strlen(pg->sn) >= sizeof(pg60->sn))
     61  1.3.4.2  tls 		return E2BIG;
     62  1.3.4.2  tls 	return 0;
     63  1.3.4.2  tls }
     64  1.3.4.2  tls 
     65  1.3.4.2  tls /* Helper for compat ioctls that use struct compat_60_ptmget. */
     66  1.3.4.2  tls static int
     67  1.3.4.2  tls compat_60_ptmget_ioctl(dev_t dev, u_long cmd, void *data, int flag,
     68  1.3.4.2  tls 	struct lwp *l)
     69  1.3.4.2  tls {
     70  1.3.4.2  tls 	int ret;
     71  1.3.4.2  tls 	u_long newcmd;
     72  1.3.4.2  tls 	struct ptmget pg;
     73  1.3.4.2  tls 	const struct cdevsw *cd = cdevsw_lookup(dev);
     74  1.3.4.2  tls 
     75  1.3.4.2  tls 	if (cd == NULL || cd->d_ioctl == NULL)
     76  1.3.4.2  tls 		return ENXIO;
     77  1.3.4.2  tls 
     78  1.3.4.2  tls 	switch (cmd) {
     79  1.3.4.2  tls 	case COMPAT_60_TIOCPTMGET:  newcmd = TIOCPTMGET; break;
     80  1.3.4.2  tls 	case COMPAT_60_TIOCPTSNAME: newcmd = TIOCPTSNAME; break;
     81  1.3.4.2  tls 	default: return ENOTTY;
     82  1.3.4.2  tls 	}
     83  1.3.4.2  tls 
     84  1.3.4.2  tls 	ret = (cd->d_ioctl)(dev, newcmd, &pg, flag, l);
     85  1.3.4.2  tls 	if (ret != 0)
     86  1.3.4.2  tls 		return ret;
     87  1.3.4.2  tls 	ret = ptmget_to_ptmget60(&pg, data);
     88  1.3.4.2  tls 	return ret;
     89  1.3.4.2  tls }
     90  1.3.4.2  tls 
     91  1.3.4.2  tls /*
     92  1.3.4.2  tls  * COMPAT_60 versions of ttioctl and ptmioctl.
     93  1.3.4.2  tls  */
     94  1.3.4.2  tls int
     95  1.3.4.2  tls compat_60_ttioctl(struct tty *tp, u_long cmd, void *data, int flag,
     96  1.3.4.2  tls 	struct lwp *l)
     97  1.3.4.2  tls {
     98  1.3.4.2  tls 
     99  1.3.4.2  tls 	switch (cmd) {
    100  1.3.4.2  tls 	case COMPAT_60_TIOCPTSNAME:
    101  1.3.4.2  tls 		return compat_60_ptmget_ioctl(tp->t_dev, cmd, data, flag, l);
    102  1.3.4.2  tls 	default:
    103  1.3.4.2  tls 		return EPASSTHROUGH;
    104  1.3.4.2  tls 	}
    105  1.3.4.2  tls }
    106  1.3.4.2  tls 
    107  1.3.4.2  tls int
    108  1.3.4.2  tls compat_60_ptmioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
    109  1.3.4.2  tls {
    110  1.3.4.2  tls 
    111  1.3.4.2  tls 	switch (cmd) {
    112  1.3.4.2  tls 	case COMPAT_60_TIOCPTMGET:
    113  1.3.4.2  tls 		return compat_60_ptmget_ioctl(dev, cmd, data, flag, l);
    114  1.3.4.2  tls 	default:
    115  1.3.4.2  tls 		return EPASSTHROUGH;
    116  1.3.4.2  tls 	}
    117  1.3.4.2  tls }
    118  1.3.4.2  tls 
    119  1.3.4.2  tls #endif /* COMPAT_60 */
    120