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linux_termios.c revision 1.11.2.6
      1 /*	$NetBSD: linux_termios.c,v 1.11.2.6 2002/06/24 22:09:36 nathanw Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Frank van der Linden and Eric Haszlakiewicz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: linux_termios.c,v 1.11.2.6 2002/06/24 22:09:36 nathanw Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/proc.h>
     44 #include <sys/systm.h>
     45 #include <sys/file.h>
     46 #include <sys/filedesc.h>
     47 #include <sys/ioctl.h>
     48 #include <sys/mount.h>
     49 #include <sys/termios.h>
     50 
     51 #include <sys/sa.h>
     52 #include <sys/syscallargs.h>
     53 
     54 #include <compat/linux/common/linux_types.h>
     55 #include <compat/linux/common/linux_ioctl.h>
     56 #include <compat/linux/common/linux_signal.h>
     57 #include <compat/linux/common/linux_util.h>
     58 #include <compat/linux/common/linux_termios.h>
     59 
     60 #include <compat/linux/linux_syscallargs.h>
     61 
     62 static speed_t linux_speeds[] = {
     63 	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
     64 	9600, 19200, 38400, 57600, 115200, 230400
     65 };
     66 
     67 static const int linux_spmasks[] = {
     68 	LINUX_B0, LINUX_B50, LINUX_B75, LINUX_B110, LINUX_B134, LINUX_B150,
     69 	LINUX_B200, LINUX_B300, LINUX_B600, LINUX_B1200, LINUX_B1800,
     70 	LINUX_B2400, LINUX_B4800, LINUX_B9600, LINUX_B19200, LINUX_B38400,
     71 	LINUX_B57600, LINUX_B115200, LINUX_B230400
     72 };
     73 
     74 
     75 static void linux_termio_to_bsd_termios __P((struct linux_termio *,
     76 					     struct termios *));
     77 static void bsd_termios_to_linux_termio __P((struct termios *,
     78 					     struct linux_termio *));
     79 static void linux_termios_to_bsd_termios __P((struct linux_termios *,
     80 					      struct termios *));
     81 static void bsd_termios_to_linux_termios __P((struct termios *,
     82 					      struct linux_termios *));
     83 
     84 /*
     85  * Deal with termio ioctl cruft. This doesn't look very good..
     86  * XXX too much code duplication, obviously..
     87  *
     88  * The conversion routines between Linux and BSD structures assume
     89  * that the fields are already filled with the current values,
     90  * so that fields present in BSD but not in Linux keep their current
     91  * values.
     92  */
     93 
     94 static void
     95 linux_termio_to_bsd_termios(lt, bts)
     96 	struct linux_termio *lt;
     97 	struct termios *bts;
     98 {
     99 	int index;
    100 
    101 	bts->c_iflag = 0;
    102 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IGNBRK, IGNBRK);
    103 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_BRKINT, BRKINT);
    104 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IGNPAR, IGNPAR);
    105 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_INPCK, INPCK);
    106 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_ISTRIP, ISTRIP);
    107 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_INLCR, INLCR);
    108 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IGNCR, IGNCR);
    109 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_ICRNL, ICRNL);
    110 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IXON, IXON);
    111 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IXANY, IXANY);
    112 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IXOFF, IXOFF);
    113 	bts->c_iflag |= cvtto_bsd_mask(lt->c_iflag, LINUX_IMAXBEL, IMAXBEL);
    114 
    115 	bts->c_oflag = 0;
    116 	bts->c_oflag |= cvtto_bsd_mask(lt->c_oflag, LINUX_OPOST, OPOST);
    117 	bts->c_oflag |= cvtto_bsd_mask(lt->c_oflag, LINUX_ONLCR, ONLCR);
    118 	bts->c_oflag |= cvtto_bsd_mask(lt->c_oflag, LINUX_XTABS, OXTABS);
    119 
    120 	/*
    121 	 * This could have been:
    122 	 * bts->c_cflag = (lt->c_flag & LINUX_CSIZE) << 4
    123 	 * But who knows, those values might perhaps change one day.
    124 	 */
    125 	switch (lt->c_cflag & LINUX_CSIZE) {
    126 	case LINUX_CS5:
    127 		bts->c_cflag = CS5;
    128 		break;
    129 	case LINUX_CS6:
    130 		bts->c_cflag = CS6;
    131 		break;
    132 	case LINUX_CS7:
    133 		bts->c_cflag = CS7;
    134 		break;
    135 	case LINUX_CS8:
    136 		bts->c_cflag = CS8;
    137 		break;
    138 	}
    139 	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_CSTOPB, CSTOPB);
    140 	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_CREAD, CREAD);
    141 	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_PARENB, PARENB);
    142 	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_PARODD, PARODD);
    143 	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_HUPCL, HUPCL);
    144 	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_CLOCAL, CLOCAL);
    145 	bts->c_cflag |= cvtto_bsd_mask(lt->c_cflag, LINUX_CRTSCTS, CRTSCTS);
    146 
    147 	bts->c_lflag = 0;
    148 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ISIG, ISIG);
    149 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ICANON, ICANON);
    150 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHO, ECHO);
    151 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOE, ECHOE);
    152 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOK, ECHOK);
    153 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHONL, ECHONL);
    154 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_NOFLSH, NOFLSH);
    155 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_TOSTOP, TOSTOP);
    156 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOCTL, ECHOCTL);
    157 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOPRT, ECHOPRT);
    158 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_ECHOKE, ECHOKE);
    159 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_FLUSHO, FLUSHO);
    160 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_PENDIN, PENDIN);
    161 	bts->c_lflag |= cvtto_bsd_mask(lt->c_lflag, LINUX_IEXTEN, IEXTEN);
    162 
    163 	index = lt->c_cflag & LINUX_CBAUD;
    164 	if (index & LINUX_CBAUDEX)
    165 		index = (index & ~LINUX_CBAUDEX) + LINUX_NSPEEDS - 1;
    166 	bts->c_ispeed = bts->c_ospeed = linux_speeds[index];
    167 
    168 	bts->c_cc[VINTR] = lt->c_cc[LINUX_OLD_VINTR];
    169 	bts->c_cc[VQUIT] = lt->c_cc[LINUX_OLD_VQUIT];
    170 	bts->c_cc[VERASE] = lt->c_cc[LINUX_OLD_VERASE];
    171 	bts->c_cc[VKILL] = lt->c_cc[LINUX_OLD_VKILL];
    172 	bts->c_cc[VEOF] = lt->c_cc[LINUX_OLD_VEOF];
    173 	bts->c_cc[VTIME] = lt->c_cc[LINUX_OLD_VTIME];
    174 	bts->c_cc[VMIN] = lt->c_cc[LINUX_OLD_VMIN];
    175 }
    176 
    177 static void
    178 bsd_termios_to_linux_termio(bts, lt)
    179 	struct termios *bts;
    180 	struct linux_termio *lt;
    181 {
    182 	int i, mask;
    183 
    184 	lt->c_iflag = 0;
    185 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNBRK, LINUX_IGNBRK);
    186 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, BRKINT, LINUX_BRKINT);
    187 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNPAR, LINUX_IGNPAR);
    188 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, INPCK, LINUX_INPCK);
    189 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, ISTRIP, LINUX_ISTRIP);
    190 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, INLCR, LINUX_INLCR);
    191 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNCR, LINUX_IGNCR);
    192 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, ICRNL, LINUX_ICRNL);
    193 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXON, LINUX_IXON);
    194 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXANY, LINUX_IXANY);
    195 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXOFF, LINUX_IXOFF);
    196 	lt->c_iflag |= cvtto_linux_mask(bts->c_iflag, IMAXBEL, LINUX_IMAXBEL);
    197 
    198 	lt->c_oflag = 0;
    199 	lt->c_oflag |= cvtto_linux_mask(bts->c_oflag, OPOST, LINUX_OPOST);
    200 	lt->c_oflag |= cvtto_linux_mask(bts->c_oflag, ONLCR, LINUX_ONLCR);
    201 	lt->c_oflag |= cvtto_linux_mask(bts->c_oflag, OXTABS, LINUX_XTABS);
    202 
    203 	switch (bts->c_cflag & CSIZE) {
    204 	case CS5:
    205 		lt->c_cflag = LINUX_CS5;
    206 		break;
    207 	case CS6:
    208 		lt->c_cflag = LINUX_CS6;
    209 		break;
    210 	case CS7:
    211 		lt->c_cflag = LINUX_CS7;
    212 		break;
    213 	case CS8:
    214 		lt->c_cflag = LINUX_CS8;
    215 		break;
    216 	}
    217 	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, CSTOPB, LINUX_CSTOPB);
    218 	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, CREAD, LINUX_CREAD);
    219 	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, PARENB, LINUX_PARENB);
    220 	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, PARODD, LINUX_PARODD);
    221 	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, HUPCL, LINUX_HUPCL);
    222 	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, CLOCAL, LINUX_CLOCAL);
    223 	lt->c_cflag |= cvtto_linux_mask(bts->c_cflag, CRTSCTS, LINUX_CRTSCTS);
    224 
    225 	lt->c_lflag = 0;
    226 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ISIG, LINUX_ISIG);
    227 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ICANON, LINUX_ICANON);
    228 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHO, LINUX_ECHO);
    229 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOE, LINUX_ECHOE);
    230 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOK, LINUX_ECHOK);
    231 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHONL, LINUX_ECHONL);
    232 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, NOFLSH, LINUX_NOFLSH);
    233 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, TOSTOP, LINUX_TOSTOP);
    234 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOCTL, LINUX_ECHOCTL);
    235 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOPRT, LINUX_ECHOPRT);
    236 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOKE, LINUX_ECHOKE);
    237 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, FLUSHO, LINUX_FLUSHO);
    238 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, PENDIN, LINUX_PENDIN);
    239 	lt->c_lflag |= cvtto_linux_mask(bts->c_lflag, IEXTEN, LINUX_IEXTEN);
    240 
    241 	mask = LINUX_B9600;	/* XXX default value should this be 0? */
    242 	for (i = 0; i < sizeof (linux_speeds) / sizeof (speed_t); i++) {
    243 		if (bts->c_ospeed == linux_speeds[i]) {
    244 			mask = linux_spmasks[i];
    245 			break;
    246 		}
    247 	}
    248 	lt->c_cflag |= mask;
    249 
    250 	lt->c_cc[LINUX_VINTR] = bts->c_cc[VINTR];
    251 	lt->c_cc[LINUX_VQUIT] = bts->c_cc[VQUIT];
    252 	lt->c_cc[LINUX_VERASE] = bts->c_cc[VERASE];
    253 	lt->c_cc[LINUX_VKILL] = bts->c_cc[VKILL];
    254 	lt->c_cc[LINUX_VEOF] = bts->c_cc[VEOF];
    255 	lt->c_cc[LINUX_VTIME] = bts->c_cc[VTIME];
    256 	lt->c_cc[LINUX_VMIN] = bts->c_cc[VMIN];
    257 	lt->c_cc[LINUX_VSWTC] = 0;
    258 
    259 	/* XXX should be fixed someday */
    260 	lt->c_line = 0;
    261 }
    262 
    263 static void
    264 linux_termios_to_bsd_termios(lts, bts)
    265 	struct linux_termios *lts;
    266 	struct termios *bts;
    267 {
    268 	int index;
    269 
    270 	bts->c_iflag = 0;
    271 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IGNBRK, IGNBRK);
    272 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_BRKINT, BRKINT);
    273 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IGNPAR, IGNPAR);
    274 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_INPCK, INPCK);
    275 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_ISTRIP, ISTRIP);
    276 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_INLCR, INLCR);
    277 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IGNCR, IGNCR);
    278 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_ICRNL, ICRNL);
    279 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IXON, IXON);
    280 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IXANY, IXANY);
    281 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IXOFF, IXOFF);
    282 	bts->c_iflag |= cvtto_bsd_mask(lts->c_iflag, LINUX_IMAXBEL, IMAXBEL);
    283 
    284 	bts->c_oflag = 0;
    285 	bts->c_oflag |= cvtto_bsd_mask(lts->c_oflag, LINUX_OPOST, OPOST);
    286 	bts->c_oflag |= cvtto_bsd_mask(lts->c_oflag, LINUX_ONLCR, ONLCR);
    287 	bts->c_oflag |= cvtto_bsd_mask(lts->c_oflag, LINUX_XTABS, OXTABS);
    288 
    289 	bts->c_cflag = 0;
    290 	switch (lts->c_cflag & LINUX_CSIZE) {
    291 	case LINUX_CS5:
    292 		bts->c_cflag = CS5;
    293 		break;
    294 	case LINUX_CS6:
    295 		bts->c_cflag = CS6;
    296 		break;
    297 	case LINUX_CS7:
    298 		bts->c_cflag = CS7;
    299 		break;
    300 	case LINUX_CS8:
    301 		bts->c_cflag = CS8;
    302 		break;
    303 	}
    304 	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_CSTOPB, CSTOPB);
    305 	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_CREAD, CREAD);
    306 	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_PARENB, PARENB);
    307 	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_PARODD, PARODD);
    308 	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_HUPCL, HUPCL);
    309 	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_CLOCAL, CLOCAL);
    310 	bts->c_cflag |= cvtto_bsd_mask(lts->c_cflag, LINUX_CRTSCTS, CRTSCTS);
    311 
    312 	bts->c_lflag = 0;
    313 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ISIG, ISIG);
    314 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ICANON, ICANON);
    315 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHO, ECHO);
    316 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOE, ECHOE);
    317 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOK, ECHOK);
    318 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHONL, ECHONL);
    319 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_NOFLSH, NOFLSH);
    320 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_TOSTOP, TOSTOP);
    321 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOCTL, ECHOCTL);
    322 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOPRT, ECHOPRT);
    323 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_ECHOKE, ECHOKE);
    324 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_FLUSHO, FLUSHO);
    325 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_PENDIN, PENDIN);
    326 	bts->c_lflag |= cvtto_bsd_mask(lts->c_lflag, LINUX_IEXTEN, IEXTEN);
    327 
    328 	index = lts->c_cflag & LINUX_CBAUD;
    329 	if (index & LINUX_CBAUDEX)
    330 		index = (index & ~LINUX_CBAUDEX) + LINUX_NSPEEDS - 1;
    331 	bts->c_ispeed = bts->c_ospeed = linux_speeds[index];
    332 	/*
    333 	 * A null c_ospeed causes NetBSD to hangup the terminal.
    334 	 * Linux does not do this, and it sets c_ospeed to zero
    335 	 * sometimes. If it is null, we store -1 in the kernel
    336 	 */
    337 	if (bts->c_ospeed == 0)
    338 		bts->c_ospeed = -1;
    339 
    340 	bts->c_cc[VINTR] = lts->c_cc[LINUX_VINTR];
    341 	bts->c_cc[VQUIT] = lts->c_cc[LINUX_VQUIT];
    342 	bts->c_cc[VERASE] = lts->c_cc[LINUX_VERASE];
    343 	bts->c_cc[VKILL] = lts->c_cc[LINUX_VKILL];
    344 	bts->c_cc[VEOF] = lts->c_cc[LINUX_VEOF];
    345 	bts->c_cc[VTIME] = lts->c_cc[LINUX_VTIME];
    346 	bts->c_cc[VMIN] = lts->c_cc[LINUX_VMIN];
    347 	bts->c_cc[VEOL] = lts->c_cc[LINUX_VEOL];
    348 	bts->c_cc[VEOL2] = lts->c_cc[LINUX_VEOL2];
    349 	bts->c_cc[VWERASE] = lts->c_cc[LINUX_VWERASE];
    350 	bts->c_cc[VSUSP] = lts->c_cc[LINUX_VSUSP];
    351 	bts->c_cc[VSTART] = lts->c_cc[LINUX_VSTART];
    352 	bts->c_cc[VSTOP] = lts->c_cc[LINUX_VSTOP];
    353 	bts->c_cc[VLNEXT] = lts->c_cc[LINUX_VLNEXT];
    354 	bts->c_cc[VDISCARD] = lts->c_cc[LINUX_VDISCARD];
    355 	bts->c_cc[VREPRINT] = lts->c_cc[LINUX_VREPRINT];
    356 }
    357 
    358 static void
    359 bsd_termios_to_linux_termios(bts, lts)
    360 	struct termios *bts;
    361 	struct linux_termios *lts;
    362 {
    363 	int i, mask;
    364 
    365 	lts->c_iflag = 0;
    366 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNBRK, LINUX_IGNBRK);
    367 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, BRKINT, LINUX_BRKINT);
    368 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNPAR, LINUX_IGNPAR);
    369 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, INPCK, LINUX_INPCK);
    370 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, ISTRIP, LINUX_ISTRIP);
    371 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, INLCR, LINUX_INLCR);
    372 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IGNCR, LINUX_IGNCR);
    373 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, ICRNL, LINUX_ICRNL);
    374 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXON, LINUX_IXON);
    375 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXANY, LINUX_IXANY);
    376 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IXOFF, LINUX_IXOFF);
    377 	lts->c_iflag |= cvtto_linux_mask(bts->c_iflag, IMAXBEL, LINUX_IMAXBEL);
    378 
    379 	lts->c_oflag = 0;
    380 	lts->c_oflag |= cvtto_linux_mask(bts->c_oflag, OPOST, LINUX_OPOST);
    381 	lts->c_oflag |= cvtto_linux_mask(bts->c_oflag, ONLCR, LINUX_ONLCR);
    382 	lts->c_oflag |= cvtto_linux_mask(bts->c_oflag, OXTABS, LINUX_XTABS);
    383 
    384 	switch (bts->c_cflag & CSIZE) {
    385 	case CS5:
    386 		lts->c_cflag = LINUX_CS5;
    387 		break;
    388 	case CS6:
    389 		lts->c_cflag = LINUX_CS6;
    390 		break;
    391 	case CS7:
    392 		lts->c_cflag = LINUX_CS7;
    393 		break;
    394 	case CS8:
    395 		lts->c_cflag = LINUX_CS8;
    396 		break;
    397 	}
    398 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CS5, LINUX_CS5);
    399 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CS6, LINUX_CS6);
    400 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CS7, LINUX_CS7);
    401 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CS8, LINUX_CS8);
    402 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CSTOPB, LINUX_CSTOPB);
    403 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CREAD, LINUX_CREAD);
    404 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, PARENB, LINUX_PARENB);
    405 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, PARODD, LINUX_PARODD);
    406 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, HUPCL, LINUX_HUPCL);
    407 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CLOCAL, LINUX_CLOCAL);
    408 	lts->c_cflag |= cvtto_linux_mask(bts->c_cflag, CRTSCTS, LINUX_CRTSCTS);
    409 
    410 	lts->c_lflag = 0;
    411 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ISIG, LINUX_ISIG);
    412 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ICANON, LINUX_ICANON);
    413 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHO, LINUX_ECHO);
    414 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOE, LINUX_ECHOE);
    415 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOK, LINUX_ECHOK);
    416 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHONL, LINUX_ECHONL);
    417 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, NOFLSH, LINUX_NOFLSH);
    418 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, TOSTOP, LINUX_TOSTOP);
    419 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOCTL, LINUX_ECHOCTL);
    420 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOPRT, LINUX_ECHOPRT);
    421 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, ECHOKE, LINUX_ECHOKE);
    422 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, FLUSHO, LINUX_FLUSHO);
    423 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, PENDIN, LINUX_PENDIN);
    424 	lts->c_lflag |= cvtto_linux_mask(bts->c_lflag, IEXTEN, LINUX_IEXTEN);
    425 
    426 	mask = LINUX_B9600;	/* XXX default value */
    427 	for (i = 0; i < sizeof (linux_speeds) / sizeof (speed_t); i++) {
    428 		if (bts->c_ospeed == linux_speeds[i]) {
    429 			mask = linux_spmasks[i];
    430 			break;
    431 		}
    432 	}
    433 	/*
    434 	 * A null c_ospeed causes NetBSD to hangup the terminal.
    435 	 * Linux does not do this, and it sets c_ospeed to zero
    436 	 * sometimes. If it is null, we store -1 in the kernel
    437 	 */
    438 	if (bts->c_ospeed == -1)
    439 		bts->c_ospeed = 0;
    440 	lts->c_cflag |= mask;
    441 
    442 	lts->c_cc[LINUX_VINTR] = bts->c_cc[VINTR];
    443 	lts->c_cc[LINUX_VQUIT] = bts->c_cc[VQUIT];
    444 	lts->c_cc[LINUX_VERASE] = bts->c_cc[VERASE];
    445 	lts->c_cc[LINUX_VKILL] = bts->c_cc[VKILL];
    446 	lts->c_cc[LINUX_VEOF] = bts->c_cc[VEOF];
    447 	lts->c_cc[LINUX_VTIME] = bts->c_cc[VTIME];
    448 	lts->c_cc[LINUX_VMIN] = bts->c_cc[VMIN];
    449 	lts->c_cc[LINUX_VEOL] = bts->c_cc[VEOL];
    450 	lts->c_cc[LINUX_VEOL2] = bts->c_cc[VEOL2];
    451 	lts->c_cc[LINUX_VWERASE] = bts->c_cc[VWERASE];
    452 	lts->c_cc[LINUX_VSUSP] = bts->c_cc[VSUSP];
    453 	lts->c_cc[LINUX_VSTART] = bts->c_cc[VSTART];
    454 	lts->c_cc[LINUX_VSTOP] = bts->c_cc[VSTOP];
    455 	lts->c_cc[LINUX_VLNEXT] = bts->c_cc[VLNEXT];
    456 	lts->c_cc[LINUX_VDISCARD] = bts->c_cc[VDISCARD];
    457 	lts->c_cc[LINUX_VREPRINT] = bts->c_cc[VREPRINT];
    458 	lts->c_cc[LINUX_VSWTC] = 0;
    459 
    460 	/* XXX should be fixed someday */
    461 	lts->c_line = 0;
    462 }
    463 
    464 int
    465 linux_ioctl_termios(p, uap, retval)
    466 	struct proc *p;
    467 	struct linux_sys_ioctl_args /* {
    468 		syscallarg(int) fd;
    469 		syscallarg(u_long) com;
    470 		syscallarg(caddr_t) data;
    471 	} */ *uap;
    472 	register_t *retval;
    473 {
    474 	struct file *fp;
    475 	struct filedesc *fdp;
    476 	u_long com;
    477 	struct linux_termio tmplt;
    478 	struct linux_termios tmplts;
    479 	struct termios tmpbts;
    480 	int idat;
    481 	struct sys_ioctl_args ia;
    482 	int error;
    483 	char tioclinux;
    484 	int (*bsdioctl) __P((struct file *, u_long, caddr_t, struct proc *));
    485 
    486 	fdp = p->p_fd;
    487 	if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
    488 		return (EBADF);
    489 
    490 	if ((fp->f_flag & (FREAD | FWRITE)) == 0)
    491 		return (EBADF);
    492 
    493 	bsdioctl = fp->f_ops->fo_ioctl;
    494 	com = SCARG(uap, com);
    495 	retval[0] = 0;
    496 
    497 	switch (com) {
    498 	case LINUX_TCGETS:
    499 		error = (*bsdioctl)(fp, TIOCGETA, (caddr_t)&tmpbts, p);
    500 		if (error)
    501 			return error;
    502 		bsd_termios_to_linux_termios(&tmpbts, &tmplts);
    503 		error = copyout(&tmplts, SCARG(uap, data), sizeof tmplts);
    504 		if (error)
    505 			return error;
    506 		return 0;
    507 	case LINUX_TCSETS:
    508 	case LINUX_TCSETSW:
    509 	case LINUX_TCSETSF:
    510 		/*
    511 		 * First fill in all fields, so that we keep the current
    512 		 * values for fields that Linux doesn't know about.
    513 		 */
    514 		error = (*bsdioctl)(fp, TIOCGETA, (caddr_t)&tmpbts, p);
    515 		if (error)
    516 			return error;
    517 		error = copyin(SCARG(uap, data), &tmplts, sizeof tmplts);
    518 		if (error)
    519 			return error;
    520 		linux_termios_to_bsd_termios(&tmplts, &tmpbts);
    521 		switch (com) {
    522 		case LINUX_TCSETS:
    523 			com = TIOCSETA;
    524 			break;
    525 		case LINUX_TCSETSW:
    526 			com = TIOCSETAW;
    527 			break;
    528 		case LINUX_TCSETSF:
    529 			com = TIOCSETAF;
    530 			break;
    531 		}
    532 		error = (*bsdioctl)(fp, com, (caddr_t)&tmpbts, p);
    533 		if (error)
    534 			return error;
    535 		return 0;
    536 	case LINUX_TCGETA:
    537 		error = (*bsdioctl)(fp, TIOCGETA, (caddr_t)&tmpbts, p);
    538 		if (error)
    539 			return error;
    540 		bsd_termios_to_linux_termio(&tmpbts, &tmplt);
    541 		error = copyout(&tmplt, SCARG(uap, data), sizeof tmplt);
    542 		if (error)
    543 			return error;
    544 		return 0;
    545 	case LINUX_TCSETA:
    546 	case LINUX_TCSETAW:
    547 	case LINUX_TCSETAF:
    548 		/*
    549 		 * First fill in all fields, so that we keep the current
    550 		 * values for fields that Linux doesn't know about.
    551 		 */
    552 		error = (*bsdioctl)(fp, TIOCGETA, (caddr_t)&tmpbts, p);
    553 		if (error)
    554 			return error;
    555 		error = copyin(SCARG(uap, data), &tmplt, sizeof tmplt);
    556 		if (error)
    557 			return error;
    558 		linux_termio_to_bsd_termios(&tmplt, &tmpbts);
    559 		switch (com) {
    560 		case LINUX_TCSETA:
    561 			com = TIOCSETA;
    562 			break;
    563 		case LINUX_TCSETAW:
    564 			com = TIOCSETAW;
    565 			break;
    566 		case LINUX_TCSETAF:
    567 			com = TIOCSETAF;
    568 			break;
    569 		}
    570 		error = (*bsdioctl)(fp, com, (caddr_t)&tmpbts, p);
    571 		if (error)
    572 			return error;
    573 		return 0;
    574 	case LINUX_TCFLSH:
    575 		switch((u_long)SCARG(uap, data)) {
    576 		case 0:
    577 			idat = FREAD;
    578 			break;
    579 		case 1:
    580 			idat = FWRITE;
    581 			break;
    582 		case 2:
    583 			idat = 0;
    584 			break;
    585 		default:
    586 			return EINVAL;
    587 		}
    588 		return (*bsdioctl)(fp, TIOCFLUSH, (caddr_t)&idat, p);
    589 	case LINUX_TIOCGETD:
    590 		error = (*bsdioctl)(fp, TIOCGETD, (caddr_t)&idat, p);
    591 		if (error)
    592 			return error;
    593 		switch (idat) {
    594 		case TTYDISC:
    595 			idat = LINUX_N_TTY;
    596 			break;
    597 		case SLIPDISC:
    598 			idat = LINUX_N_SLIP;
    599 			break;
    600 		case PPPDISC:
    601 			idat = LINUX_N_PPP;
    602 			break;
    603 		case STRIPDISC:
    604 			idat = LINUX_N_STRIP;
    605 			break;
    606 		/*
    607 		 * Linux does not have the tablet line discipline.
    608 		 */
    609 		case TABLDISC:
    610 		default:
    611 			idat = -1;	/* XXX What should this be? */
    612 			break;
    613 		}
    614 		error = copyout(&idat, SCARG(uap, data), sizeof idat);
    615 		if (error)
    616 			return error;
    617 		return 0;
    618 	case LINUX_TIOCSETD:
    619 		error = copyin(SCARG(uap, data), &idat, sizeof idat);
    620 		if (error)
    621 			return error;
    622 		switch (idat) {
    623 		case LINUX_N_TTY:
    624 			idat = TTYDISC;
    625 			break;
    626 		case LINUX_N_SLIP:
    627 			idat = SLIPDISC;
    628 			break;
    629 		case LINUX_N_PPP:
    630 			idat = PPPDISC;
    631 			break;
    632 		case LINUX_N_STRIP:
    633 			idat = STRIPDISC;
    634 			break;
    635 		/*
    636 		 * We can't handle the mouse line discipline Linux has.
    637 		 */
    638 		case LINUX_N_MOUSE:
    639 		case LINUX_N_AX25:
    640 		case LINUX_N_X25:
    641 		case LINUX_N_6PACK:
    642 		default:
    643 			return EINVAL;
    644 		}
    645 		error = (*bsdioctl)(fp, TIOCSETD, (caddr_t)&idat, p);
    646 		if (error)
    647 			return error;
    648 		return 0;
    649 	case LINUX_TIOCLINUX:
    650 		error = copyin(SCARG(uap, data), &tioclinux, sizeof tioclinux);
    651 		if (error != 0)
    652 			return error;
    653 		switch (tioclinux) {
    654 		case LINUX_TIOCLINUX_KERNMSG:
    655 			/*
    656 			 * XXX needed to not fail for some things. Could
    657 			 * try to use TIOCCONS, but the char argument
    658 			 * specifies the VT #, not an fd.
    659 			 */
    660 			return 0;
    661 		case LINUX_TIOCLINUX_COPY:
    662 		case LINUX_TIOCLINUX_PASTE:
    663 		case LINUX_TIOCLINUX_UNBLANK:
    664 		case LINUX_TIOCLINUX_LOADLUT:
    665 		case LINUX_TIOCLINUX_READSHIFT:
    666 		case LINUX_TIOCLINUX_READMOUSE:
    667 		case LINUX_TIOCLINUX_VESABLANK:
    668 		case LINUX_TIOCLINUX_CURCONS:	/* could use VT_GETACTIVE */
    669 			return EINVAL;
    670 		}
    671 		break;
    672 	case LINUX_TIOCGWINSZ:
    673 		SCARG(&ia, com) = TIOCGWINSZ;
    674 		break;
    675 	case LINUX_TIOCSWINSZ:
    676 		SCARG(&ia, com) = TIOCSWINSZ;
    677 		break;
    678 	case LINUX_TIOCGPGRP:
    679 		SCARG(&ia, com) = TIOCGPGRP;
    680 		break;
    681 	case LINUX_TIOCSPGRP:
    682 		SCARG(&ia, com) = TIOCSPGRP;
    683 		break;
    684 	case LINUX_FIONREAD:
    685 		SCARG(&ia, com) = FIONREAD;
    686 		break;
    687 	case LINUX_FIONBIO:
    688 		SCARG(&ia, com) = FIONBIO;
    689 		break;
    690 	case LINUX_FIOASYNC:
    691 		SCARG(&ia, com) = FIOASYNC;
    692 		break;
    693 	case LINUX_TIOCEXCL:
    694 		SCARG(&ia, com) = TIOCEXCL;
    695 		break;
    696 	case LINUX_TIOCNXCL:
    697 		SCARG(&ia, com) = TIOCNXCL;
    698 		break;
    699 	case LINUX_TIOCCONS:
    700 		SCARG(&ia, com) = TIOCCONS;
    701 		break;
    702 	case LINUX_TIOCNOTTY:
    703 		SCARG(&ia, com) = TIOCNOTTY;
    704 		break;
    705 	case LINUX_TCSBRK:
    706 		SCARG(&ia, com) = SCARG(uap, data) ? TIOCDRAIN : TIOCSBRK;
    707 		break;
    708 	case LINUX_TIOCMGET:
    709 		SCARG(&ia, com) = TIOCMGET;
    710 		break;
    711 	case LINUX_TIOCMSET:
    712 		SCARG(&ia, com) = TIOCMSET;
    713 		break;
    714 	default:
    715 		return EINVAL;
    716 	}
    717 
    718 	SCARG(&ia, fd) = SCARG(uap, fd);
    719 	SCARG(&ia, data) = SCARG(uap, data);
    720 	/* XXX NJWLWP */
    721 	return sys_ioctl(curlwp, &ia, retval);
    722 }
    723