121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/* $NetBSD: tty_60.c,v 1.4 2015/10/22 15:18:25 christos Exp $ */
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/*-
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* Copyright (c) 2012 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Alan Barrett
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: tty_60.c,v 1.4 2015/10/22 15:18:25 christos Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_compat_netbsd.h"
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#endif
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#include <sys/types.h>
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#include <sys/conf.h>
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#include <sys/errno.h>
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#include <sys/systm.h>
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#include <sys/tty.h>
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#include <compat/sys/ttycom.h>
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#ifdef COMPAT_60
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/* convert struct ptmget to struct compat_60_ptmget */
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static int
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ptmget_to_ptmget60(struct ptmget *pg, struct compat_60_ptmget *pg60)
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{
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memset(pg60, 0, sizeof(*pg60));
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pg60->cfd = pg->cfd;
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pg60->sfd = pg->sfd;
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strlcpy(pg60->cn, pg->cn, sizeof(pg60->cn));
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strlcpy(pg60->sn, pg->sn, sizeof(pg60->sn));
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if (strlen(pg->cn) >= sizeof(pg60->cn)
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|| strlen(pg->sn) >= sizeof(pg60->sn))
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return E2BIG;
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return 0;
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}
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/* Helper for compat ioctls that use struct compat_60_ptmget. */
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static int
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compat_60_ptmget_ioctl(dev_t dev, u_long cmd, void *data, int flag,
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struct lwp *l)
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{
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int ret;
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u_long newcmd;
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struct ptmget pg;
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const struct cdevsw *cd = cdevsw_lookup(dev);
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if (cd == NULL || cd->d_ioctl == NULL)
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return ENXIO;
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switch (cmd) {
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case COMPAT_60_TIOCPTMGET: newcmd = TIOCPTMGET; break;
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case COMPAT_60_TIOCPTSNAME: newcmd = TIOCPTSNAME; break;
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default: return ENOTTY;
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}
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ret = (cd->d_ioctl)(dev, newcmd, &pg, flag, l);
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if (ret != 0)
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return ret;
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ret = ptmget_to_ptmget60(&pg, data);
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return ret;
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}
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/*
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* COMPAT_60 versions of ttioctl and ptmioctl.
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*/
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int
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compat_60_ttioctl(struct tty *tp, u_long cmd, void *data, int flag,
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struct lwp *l)
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{
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switch (cmd) {
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case COMPAT_60_TIOCPTMGET:
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case COMPAT_60_TIOCPTSNAME:
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return compat_60_ptmget_ioctl(tp->t_dev, cmd, data, flag, l);
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default:
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return EPASSTHROUGH;
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}
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}
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int
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compat_60_ptmioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
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{
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switch (cmd) {
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case COMPAT_60_TIOCPTMGET:
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return compat_60_ptmget_ioctl(dev, cmd, data, flag, l);
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default:
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return EPASSTHROUGH;
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}
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}
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#endif /* COMPAT_60 */
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