initial import of NetBSD tree

1 files changed, 656 insertions, 0 deletions

diff --git a/sys/compat/linux/linux_ioctl.c b/sys/compat/linux/linux_ioctl.c
new file mode 100644
index 00000000000..15967402545
--- /dev/null
+++ b/sys/compat/linux/linux_ioctl.c
@@ -0,0 +1,656 @@
+/*	$NetBSD: linux_ioctl.c,v 1.8 1995/10/07 06:27:07 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1995 Frank van der Linden
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed for the NetBSD Project
+ *      by Frank van der Linden
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/systm.h>
+#include <sys/file.h>
+#include <sys/filedesc.h>
+#include <sys/ioctl.h>
+#include <sys/termios.h>
+#include <sys/tty.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <net/if.h>
+#include <sys/sockio.h>
+
+#include <sys/syscallargs.h>
+
+#include <compat/linux/linux_types.h>
+#include <compat/linux/linux_ioctl.h>
+#include <compat/linux/linux_sockio.h>
+#include <compat/linux/linux_util.h>
+#include <compat/linux/linux_signal.h>
+#include <compat/linux/linux_syscallargs.h>
+
+static speed_t linux_speeds[] = {
+	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
+	9600, 19200, 38400, 57600, 115200
+};
+
+static int linux_spmasks[] = {
+	LINUX_B0, LINUX_B50, LINUX_B75, LINUX_B110, LINUX_B134, LINUX_B150,
+	LINUX_B200, LINUX_B300, LINUX_B600, LINUX_B1200, LINUX_B1800,
+	LINUX_B2400, LINUX_B4800, LINUX_B9600, LINUX_B19200, LINUX_B38400,
+	LINUX_B57600, LINUX_B115200, LINUX_B230400
+};
+
+/*
+ * Deal with termio ioctl cruft. This doesn't look very good..
+ * XXX too much code duplication, obviously..
+ *
+ * The conversion routines between Linux and BSD structures assume
+ * that the fields are already filled with the current values,
+ * so that fields present in BSD but not in Linux keep their current
+ * values.
+ */
+
+static int
+linux_termio_to_bsd_termios(lt, bts)
+	register struct linux_termio *lt;
+	register struct termios *bts;
+{
+	int index;
+
+	bts->c_iflag = 0;
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IGNBRK, IGNBRK);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_BRKINT, BRKINT);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IGNPAR, IGNPAR);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_INPCK, INPCK);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_ISTRIP, ISTRIP);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_INLCR, INLCR);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IGNCR, IGNCR);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_ICRNL, ICRNL);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IXON, IXON);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IXANY, IXANY);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IXOFF, IXOFF);
+	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IMAXBEL, IMAXBEL);
+
+	bts->c_oflag = 0;
+	bts->c_oflag |= cvtto_bsd_mask(lt->c_oflag, LINUX_OPOST, OPOST);
+	bts->c_oflag |= cvtto_bsd_mask(lt->c_oflag, LINUX_ONLCR, ONLCR);
+	bts->c_oflag |= cvtto_bsd_mask(lt->c_oflag, LINUX_XTABS, OXTABS);
+
+	/*
+	 * This could have been:
+	 * bts->c_cflag = (lt->c_flag & LINUX_CSIZE) << 4
+	 * But who knows, those values might perhaps change one day.
+	 */
+	switch (lt->c_cflag & LINUX_CSIZE) {
+	case LINUX_CS5:
+		bts->c_cflag = CS5;
+		break;
+	case LINUX_CS6:
+		bts->c_cflag = CS6;
+		break;
+	case LINUX_CS7:
+		bts->c_cflag = CS7;
+		break;
+	case LINUX_CS8:
+		bts->c_cflag = CS8;
+		break;
+	}
+	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_CSTOPB, CSTOPB);
+	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_CREAD, CREAD);
+	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_PARENB, PARENB);
+	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_PARODD, PARODD);
+	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_HUPCL, HUPCL);
+	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_CLOCAL, CLOCAL);
+	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_CRTSCTS, CRTSCTS);
+
+	bts->c_lflag = 0;
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ISIG, ISIG);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ICANON, ICANON);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHO, ECHO);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOE, ECHOE);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOK, ECHOK);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHONL, ECHONL);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_NOFLSH, NOFLSH);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_TOSTOP, TOSTOP);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOCTL, ECHOCTL);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOPRT, ECHOPRT);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOKE, ECHOKE);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_FLUSHO, FLUSHO);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_PENDIN, PENDIN);
+	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_IEXTEN, IEXTEN);
+
+	index = lt->c_cflag & LINUX_CBAUD;
+	if (index & LINUX_CBAUDEX)
+		index = (index & ~LINUX_CBAUDEX) + LINUX_NSPEEDS - 1;
+	bts->c_ispeed = bts->c_ospeed = linux_speeds[index];
+
+	bts->c_cc[VINTR] = lt->c_cc[LINUX_VINTR];
+	bts->c_cc[VQUIT] = lt->c_cc[LINUX_VQUIT];
+	bts->c_cc[VERASE] = lt->c_cc[LINUX_VERASE];
+	bts->c_cc[VKILL] = lt->c_cc[LINUX_VKILL];
+	bts->c_cc[VEOF] = lt->c_cc[LINUX_VEOF];
+	bts->c_cc[VTIME] = lt->c_cc[LINUX_VTIME];
+	bts->c_cc[VMIN] = lt->c_cc[LINUX_VMIN];
+}
+
+static int
+bsd_termios_to_linux_termio(bts, lt)
+	register struct termios *bts;
+	register struct linux_termio *lt;
+{
+	int i, mask;
+
+	lt->c_iflag = 0;
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNBRK, LINUX_IGNBRK);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, BRKINT, LINUX_BRKINT);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNPAR, LINUX_IGNPAR);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, INPCK, LINUX_INPCK);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, ISTRIP, LINUX_ISTRIP);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, INLCR, LINUX_INLCR);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNCR, LINUX_IGNCR);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, ICRNL, LINUX_ICRNL);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXON, LINUX_IXON);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXANY, LINUX_IXANY);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXOFF, LINUX_IXOFF);
+	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IMAXBEL, LINUX_IMAXBEL);
+
+	lt->c_oflag = 0;
+	lt->c_oflag |= cvtto_linux_mask(bts->c_oflag, OPOST, LINUX_OPOST);
+	lt->c_oflag |= cvtto_linux_mask(bts->c_oflag, ONLCR, LINUX_ONLCR);
+	lt->c_oflag |= cvtto_linux_mask(bts->c_oflag, OXTABS, LINUX_XTABS);
+
+	switch (bts->c_cflag & CSIZE) {
+	case CS5:
+		lt->c_cflag = LINUX_CS5;
+		break;
+	case CS6:
+		lt->c_cflag = LINUX_CS6;
+		break;
+	case CS7:
+		lt->c_cflag = LINUX_CS7;
+		break;
+	case CS8:
+		lt->c_cflag = LINUX_CS8;
+		break;
+	}
+	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, CSTOPB, LINUX_CSTOPB);
+	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, CREAD, LINUX_CREAD);
+	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, PARENB, LINUX_PARENB);
+	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, PARODD, LINUX_PARODD);
+	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, HUPCL, LINUX_HUPCL);
+	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, CLOCAL, LINUX_CLOCAL);
+	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, CRTSCTS, LINUX_CRTSCTS);
+
+	lt->c_lflag = 0;
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ISIG, LINUX_ISIG);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ICANON, LINUX_ICANON);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHO, LINUX_ECHO);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOE, LINUX_ECHOE);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOK, LINUX_ECHOK);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHONL, LINUX_ECHONL);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, NOFLSH, LINUX_NOFLSH);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, TOSTOP, LINUX_TOSTOP);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOCTL, LINUX_ECHOCTL);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOPRT, LINUX_ECHOPRT);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOKE, LINUX_ECHOKE);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, FLUSHO, LINUX_FLUSHO);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, PENDIN, LINUX_PENDIN);
+	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, IEXTEN, LINUX_IEXTEN);
+
+	mask = LINUX_B9600;	/* XXX default value should this be 0? */
+	for (i = 0; i < sizeof (linux_speeds) / sizeof (speed_t); i++) {
+		if (bts->c_ospeed == linux_speeds[i]) {
+			mask = linux_spmasks[i];
+			break;
+		}
+	}
+	lt->c_cflag |= mask;
+
+	lt->c_cc[LINUX_VINTR] = bts->c_cc[VINTR];
+	lt->c_cc[LINUX_VQUIT] = bts->c_cc[VQUIT];
+	lt->c_cc[LINUX_VERASE] = bts->c_cc[VERASE];
+	lt->c_cc[LINUX_VKILL] = bts->c_cc[VKILL];
+	lt->c_cc[LINUX_VEOF] = bts->c_cc[VEOF];
+	lt->c_cc[LINUX_VTIME] = bts->c_cc[VTIME];
+	lt->c_cc[LINUX_VMIN] = bts->c_cc[VMIN];
+	lt->c_cc[LINUX_VSWTC] = 0;
+
+	/* XXX should be fixed someday */
+	lt->c_line = 0;
+}
+
+static int
+linux_termios_to_bsd_termios(lts, bts)
+	register struct linux_termios *lts;
+	register struct termios *bts;
+{
+	int index;
+
+	bts->c_iflag = 0;
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IGNBRK, IGNBRK);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_BRKINT, BRKINT);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IGNPAR, IGNPAR);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_INPCK, INPCK);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_ISTRIP, ISTRIP);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_INLCR, INLCR);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IGNCR, IGNCR);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_ICRNL, ICRNL);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IXON, IXON);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IXANY, IXANY);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IXOFF, IXOFF);
+	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IMAXBEL, IMAXBEL);
+
+	bts->c_oflag = 0;
+	bts->c_oflag |= cvtto_bsd_mask(lts->c_oflag, LINUX_OPOST, OPOST);
+	bts->c_oflag |= cvtto_bsd_mask(lts->c_oflag, LINUX_ONLCR, ONLCR);
+	bts->c_oflag |= cvtto_bsd_mask(lts->c_oflag, LINUX_XTABS, OXTABS);
+
+	bts->c_cflag = 0;
+	switch (lts->c_cflag & LINUX_CSIZE) {
+	case LINUX_CS5:
+		bts->c_cflag = CS5;
+		break;
+	case LINUX_CS6:
+		bts->c_cflag = CS6;
+		break;
+	case LINUX_CS7:
+		bts->c_cflag = CS7;
+		break;
+	case LINUX_CS8:
+		bts->c_cflag = CS8;
+		break;
+	}
+	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_CSTOPB, CSTOPB);
+	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_CREAD, CREAD);
+	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_PARENB, PARENB);
+	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_PARODD, PARODD);
+	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_HUPCL, HUPCL);
+	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_CLOCAL, CLOCAL);
+	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_CRTSCTS, CRTSCTS);
+
+	bts->c_lflag = 0;
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ISIG, ISIG);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ICANON, ICANON);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHO, ECHO);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOE, ECHOE);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOK, ECHOK);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHONL, ECHONL);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_NOFLSH, NOFLSH);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_TOSTOP, TOSTOP);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOCTL, ECHOCTL);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOPRT, ECHOPRT);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOKE, ECHOKE);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_FLUSHO, FLUSHO);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_PENDIN, PENDIN);
+	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_IEXTEN, IEXTEN);
+
+	index = lts->c_cflag & LINUX_CBAUD;
+	if (index & LINUX_CBAUDEX)
+		index = (index & ~LINUX_CBAUDEX) + LINUX_NSPEEDS - 1;
+	bts->c_ispeed = bts->c_ospeed = linux_speeds[index];
+
+	bts->c_cc[VINTR] = lts->c_cc[LINUX_VINTR];
+	bts->c_cc[VQUIT] = lts->c_cc[LINUX_VQUIT];
+	bts->c_cc[VERASE] = lts->c_cc[LINUX_VERASE];
+	bts->c_cc[VKILL] = lts->c_cc[LINUX_VKILL];
+	bts->c_cc[VEOF] = lts->c_cc[LINUX_VEOF];
+	bts->c_cc[VTIME] = lts->c_cc[LINUX_VTIME];
+	bts->c_cc[VMIN] = lts->c_cc[LINUX_VMIN];
+	bts->c_cc[VEOL] = lts->c_cc[LINUX_VEOL];
+	bts->c_cc[VEOL2] = lts->c_cc[LINUX_VEOL2];
+	bts->c_cc[VWERASE] = lts->c_cc[LINUX_VWERASE];
+	bts->c_cc[VSUSP] = lts->c_cc[LINUX_VSUSP];
+	bts->c_cc[VSTART] = lts->c_cc[LINUX_VSTART];
+	bts->c_cc[VSTOP] = lts->c_cc[LINUX_VSTOP];
+	bts->c_cc[VLNEXT] = lts->c_cc[LINUX_VLNEXT];
+	bts->c_cc[VDISCARD] = lts->c_cc[LINUX_VDISCARD];
+	bts->c_cc[VREPRINT] = lts->c_cc[LINUX_VREPRINT];
+}
+
+static int
+bsd_termios_to_linux_termios(bts, lts)
+	register struct termios *bts;
+	register struct linux_termios *lts;
+{
+	int i, mask;
+
+	lts->c_iflag = 0;
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNBRK, LINUX_IGNBRK);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, BRKINT, LINUX_BRKINT);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNPAR, LINUX_IGNPAR);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, INPCK, LINUX_INPCK);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, ISTRIP, LINUX_ISTRIP);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, INLCR, LINUX_INLCR);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNCR, LINUX_IGNCR);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, ICRNL, LINUX_ICRNL);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXON, LINUX_IXON);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXANY, LINUX_IXANY);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXOFF, LINUX_IXOFF);
+	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IMAXBEL, LINUX_IMAXBEL);
+
+	lts->c_oflag = 0;
+	lts->c_oflag |= cvtto_linux_mask(bts->c_oflag, OPOST, LINUX_OPOST);
+	lts->c_oflag |= cvtto_linux_mask(bts->c_oflag, ONLCR, LINUX_ONLCR);
+	lts->c_oflag |= cvtto_linux_mask(bts->c_oflag, OXTABS, LINUX_XTABS);
+
+	switch (bts->c_cflag & CSIZE) {
+	case CS5:
+		lts->c_cflag = LINUX_CS5;
+		break;
+	case CS6:
+		lts->c_cflag = LINUX_CS6;
+		break;
+	case CS7:
+		lts->c_cflag = LINUX_CS7;
+		break;
+	case CS8:
+		lts->c_cflag = LINUX_CS8;
+		break;
+	}
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CS5, LINUX_CS5);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CS6, LINUX_CS6);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CS7, LINUX_CS7);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CS8, LINUX_CS8);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CSTOPB, LINUX_CSTOPB);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CREAD, LINUX_CREAD);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, PARENB, LINUX_PARENB);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, PARODD, LINUX_PARODD);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, HUPCL, LINUX_HUPCL);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CLOCAL, LINUX_CLOCAL);
+	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CRTSCTS, LINUX_CRTSCTS);
+
+	lts->c_lflag = 0;
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ISIG, LINUX_ISIG);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ICANON, LINUX_ICANON);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHO, LINUX_ECHO);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOE, LINUX_ECHOE);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOK, LINUX_ECHOK);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHONL, LINUX_ECHONL);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, NOFLSH, LINUX_NOFLSH);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, TOSTOP, LINUX_TOSTOP);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOCTL, LINUX_ECHOCTL);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOPRT, LINUX_ECHOPRT);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOKE, LINUX_ECHOKE);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, FLUSHO, LINUX_FLUSHO);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, PENDIN, LINUX_PENDIN);
+	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, IEXTEN, LINUX_IEXTEN);
+
+	mask = LINUX_B9600;	/* XXX default value */
+	for (i = 0; i < sizeof (linux_speeds) / sizeof (speed_t); i++) {
+		if (bts->c_ospeed == linux_speeds[i]) {
+			mask = linux_spmasks[i];
+			break;
+		}
+	}
+	lts->c_cflag |= mask;
+
+	lts->c_cc[LINUX_VINTR] = bts->c_cc[VINTR];
+	lts->c_cc[LINUX_VQUIT] = bts->c_cc[VQUIT];
+	lts->c_cc[LINUX_VERASE] = bts->c_cc[VERASE];
+	lts->c_cc[LINUX_VKILL] = bts->c_cc[VKILL];
+	lts->c_cc[LINUX_VEOF] = bts->c_cc[VEOF];
+	lts->c_cc[LINUX_VTIME] = bts->c_cc[VTIME];
+	lts->c_cc[LINUX_VMIN] = bts->c_cc[VMIN];
+	lts->c_cc[LINUX_VEOL] = bts->c_cc[VEOL];
+	lts->c_cc[LINUX_VEOL2] = bts->c_cc[VEOL2];
+	lts->c_cc[LINUX_VWERASE] = bts->c_cc[VWERASE];
+	lts->c_cc[LINUX_VSUSP] = bts->c_cc[VSUSP];
+	lts->c_cc[LINUX_VSTART] = bts->c_cc[VSTART];
+	lts->c_cc[LINUX_VSTOP] = bts->c_cc[VSTOP];
+	lts->c_cc[LINUX_VLNEXT] = bts->c_cc[VLNEXT];
+	lts->c_cc[LINUX_VDISCARD] = bts->c_cc[VDISCARD];
+	lts->c_cc[LINUX_VREPRINT] = bts->c_cc[VREPRINT];
+	lts->c_cc[LINUX_VSWTC] = 0;
+
+	/* XXX should be fixed someday */
+	lts->c_line = 0;
+}
+
+/*
+ * Most ioctl command are just converted to their NetBSD values,
+ * and passed on. The ones that take structure pointers and (flag)
+ * values need some massaging. This is done the usual way by
+ * allocating stackgap memory, letting the actual ioctl call do its
+ * work their and converting back the data afterwards.
+ */
+int
+linux_sys_ioctl(p, v, retval)
+	register struct proc *p;
+	void *v;
+	register_t *retval;
+{
+	register struct linux_sys_ioctl_args /* {
+		syscallarg(int) fd;
+		syscallarg(u_long) com;
+		syscallarg(caddr_t) data;
+	} */ *uap = v;
+	int fd;
+	unsigned long com;
+	caddr_t data, sg;
+	struct file *fp;
+	struct filedesc *fdp;
+	struct linux_termio tmplt, *alt;
+	struct linux_termios tmplts, *alts;
+	struct termios tmpbts, *abts;
+	struct sys_ioctl_args ia;
+	int error, idat, *idatp;
+
+	fd = SCARG(&ia, fd) = SCARG(uap, fd);
+	com = SCARG(uap, com);
+	data = SCARG(&ia, data) = SCARG(uap, data);
+	retval[0] = 0;
+
+	fdp = p->p_fd;
+	if ((u_int)fd >= fdp->fd_nfiles ||
+	    (fp = fdp->fd_ofiles[fd]) == NULL)
+		return (EBADF);
+
+	if ((fp->f_flag & (FREAD | FWRITE)) == 0)
+		return (EBADF);
+
+	sg = stackgap_init(p->p_emul);
+
+	switch (com) {
+	case LINUX_TCGETS:
+		SCARG(&ia, com) = TIOCGETA;
+		abts = stackgap_alloc(&sg, sizeof (*abts));
+		SCARG(&ia, data) = (caddr_t) abts;
+		if ((error = sys_ioctl(p, &ia, retval)) != 0)
+			return error;
+		if ((error = copyin(abts, &tmpbts, sizeof tmpbts)))
+			return error;
+		bsd_termios_to_linux_termios(&tmpbts, &tmplts);
+		return copyout(&tmplts, data, sizeof tmplts);
+	case LINUX_TCSETS:
+	case LINUX_TCSETSW:
+	case LINUX_TCSETSF:
+		switch (com) {
+		case LINUX_TCSETS:
+			SCARG(&ia, com) = TIOCSETA;
+			break;
+		case LINUX_TCSETSW:
+			SCARG(&ia, com) = TIOCSETAW;
+			break;
+		case LINUX_TCSETSF:
+			SCARG(&ia, com) = TIOCSETAF;
+			break;
+		}
+		if ((error = copyin(data, &tmplts, sizeof tmplts)))
+			return error;
+		abts = stackgap_alloc(&sg, sizeof tmpbts);
+		/*
+		 * First fill in all fields, so that we keep the current
+		 * values for fields that Linux doesn't know about.
+		 */
+		if ((error = (*fp->f_ops->fo_ioctl)(fp, TIOCGETA,
+		    (caddr_t) &tmpbts, p)))
+			return error;
+		linux_termios_to_bsd_termios(&tmplts, &tmpbts);
+		if ((error = copyout(&tmpbts, abts, sizeof tmpbts)))
+			return error;
+		SCARG(&ia, data) = (caddr_t) abts;
+		return sys_ioctl(p, &ia, retval);
+	case LINUX_TCGETA:
+		SCARG(&ia, com) = TIOCGETA;
+		abts = stackgap_alloc(&sg, sizeof (*abts));
+		SCARG(&ia, data) = (caddr_t) abts;
+		if ((error = sys_ioctl(p, &ia, retval)) != 0)
+			return error;
+		if ((error = copyin(abts, &tmpbts, sizeof tmpbts)))
+			return error;
+		bsd_termios_to_linux_termio(&tmpbts, &tmplt);
+		return copyout(&tmplt, data, sizeof tmplt);
+	case LINUX_TCSETA:
+	case LINUX_TCSETAW:
+	case LINUX_TCSETAF:
+		switch (com) {
+		case LINUX_TCSETA:
+			SCARG(&ia, com) = TIOCSETA;
+			break;
+		case LINUX_TCSETAW:
+			SCARG(&ia, com) = TIOCSETAW;
+			break;
+		case LINUX_TCSETAF:
+			SCARG(&ia, com) = TIOCSETAF;
+			break;
+		}
+		if ((error = copyin(&tmplt, data, sizeof tmplt)))
+			return error;
+		abts = stackgap_alloc(&sg, sizeof tmpbts);
+		/*
+		 * First fill in all fields, so that we keep the current
+		 * values for fields that Linux doesn't know about.
+		 */
+		if ((error = (*fp->f_ops->fo_ioctl)(fp, TIOCGETA,
+		    (caddr_t) &tmpbts, p)))
+			return error;
+		linux_termio_to_bsd_termios(&tmplt, &tmpbts);
+		if ((error = copyout(&tmpbts, abts, sizeof tmpbts)))
+			return error;
+		SCARG(&ia, data) = (caddr_t) abts;
+		return sys_ioctl(p, &ia, retval);
+	case LINUX_TIOCSETD:
+		if ((error = copyin(data, (caddr_t) &idat, sizeof idat)))
+			return error;
+		switch (idat) {
+		case LINUX_N_TTY:
+			idat = TTYDISC;
+			break;
+		case LINUX_N_SLIP:
+			idat = SLIPDISC;
+			break;
+		case LINUX_N_PPP:
+			idat = PPPDISC;
+			break;
+		/*
+		 * We can't handle the mouse line discipline Linux has.
+		 */
+		case LINUX_N_MOUSE:
+		default:
+			return EINVAL;
+		}
+
+		idatp = (int *) stackgap_alloc(&sg, sizeof (int));
+		if ((error = copyout(&idat, idatp, sizeof (int))))
+			return error;
+		SCARG(&ia, com) = TIOCSETD;
+		SCARG(&ia, data) = (caddr_t) idatp;
+		break;
+	case LINUX_TIOCGETD:
+		idatp = (int *) stackgap_alloc(&sg, sizeof (int));
+		SCARG(&ia, com) = TIOCGETD;
+		SCARG(&ia, data) = (caddr_t) idatp;
+		if ((error = sys_ioctl(p, &ia, retval)))
+			return error;
+		if ((error = copyin(idatp, (caddr_t) &idat, sizeof (int))))
+			return error;
+		switch (idat) {
+		case TTYDISC:
+			idat = LINUX_N_TTY;
+			break;
+		case SLIPDISC:
+			idat = LINUX_N_SLIP;
+			break;
+		case PPPDISC:
+			idat = LINUX_N_PPP;
+			break;
+		/*
+		 * Linux does not have the tablet line discipline.
+		 */
+		case TABLDISC:
+		default:
+			idat = -1;	/* XXX What should this be? */
+			break;
+		}
+		return copyout(&idat, data, sizeof (int));
+	case LINUX_TIOCGWINSZ:
+		SCARG(&ia, com) = TIOCGWINSZ;
+		break;
+	case LINUX_TIOCSWINSZ:
+		SCARG(&ia, com) = TIOCSWINSZ;
+		break;
+	case LINUX_TIOCGPGRP:
+		SCARG(&ia, com) = TIOCGPGRP;
+		break;
+	case LINUX_TIOCSPGRP:
+		SCARG(&ia, com) = TIOCSPGRP;
+		break;
+	case LINUX_FIONREAD:
+		SCARG(&ia, com) = FIONREAD;
+		break;
+	case LINUX_FIONBIO:
+		SCARG(&ia, com) = FIONBIO;
+		break;
+	case LINUX_FIOASYNC:
+		SCARG(&ia, com) = FIOASYNC;
+		break;
+	case LINUX_TIOCEXCL:
+		SCARG(&ia, com) = TIOCEXCL;
+		break;
+	case LINUX_TIOCNXCL:
+		SCARG(&ia, com) = TIOCNXCL;
+		break;
+	case LINUX_TIOCCONS:
+		SCARG(&ia, com) = TIOCCONS;
+		break;
+	case LINUX_TIOCNOTTY:
+		SCARG(&ia, com) = TIOCNOTTY;
+		break;
+	case LINUX_SIOCADDMULTI:
+		SCARG(&ia, com) = SIOCADDMULTI;
+		break;
+	case LINUX_SIOCDELMULTI:
+		SCARG(&ia, com) = SIOCDELMULTI;
+		break;
+	default:
+		return linux_machdepioctl(p, uap, retval);
+	}
+
+	return sys_ioctl(p, &ia, retval);
+}