xref: /freebsd/sys/compat/linux/linux_ioctl.c (revision 3332f1b444d4a73238e9f59cca27bfc95fe936bd)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 1994-1995 Søren Schmidt
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #include "opt_compat.h"
30 
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33 
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/sysproto.h>
37 #ifdef COMPAT_LINUX32
38 #include <sys/abi_compat.h>
39 #endif
40 #include <sys/capsicum.h>
41 #include <sys/cdio.h>
42 #include <sys/dvdio.h>
43 #include <sys/conf.h>
44 #include <sys/disk.h>
45 #include <sys/consio.h>
46 #include <sys/ctype.h>
47 #include <sys/fcntl.h>
48 #include <sys/file.h>
49 #include <sys/filedesc.h>
50 #include <sys/filio.h>
51 #include <sys/jail.h>
52 #include <sys/kbio.h>
53 #include <sys/kcov.h>
54 #include <sys/kernel.h>
55 #include <sys/linker_set.h>
56 #include <sys/lock.h>
57 #include <sys/malloc.h>
58 #include <sys/proc.h>
59 #include <sys/sbuf.h>
60 #include <sys/socket.h>
61 #include <sys/sockio.h>
62 #include <sys/soundcard.h>
63 #include <sys/stdint.h>
64 #include <sys/sx.h>
65 #include <sys/sysctl.h>
66 #include <sys/tty.h>
67 #include <sys/uio.h>
68 #include <sys/types.h>
69 #include <sys/mman.h>
70 #include <sys/resourcevar.h>
71 
72 #include <net/if.h>
73 #include <net/if_var.h>
74 #include <net/if_dl.h>
75 #include <net/if_types.h>
76 
77 #include <dev/evdev/input.h>
78 #include <dev/usb/usb_ioctl.h>
79 
80 #ifdef COMPAT_LINUX32
81 #include <machine/../linux32/linux.h>
82 #include <machine/../linux32/linux32_proto.h>
83 #else
84 #include <machine/../linux/linux.h>
85 #include <machine/../linux/linux_proto.h>
86 #endif
87 
88 #include <compat/linux/linux_common.h>
89 #include <compat/linux/linux_ioctl.h>
90 #include <compat/linux/linux_mib.h>
91 #include <compat/linux/linux_socket.h>
92 #include <compat/linux/linux_timer.h>
93 #include <compat/linux/linux_util.h>
94 
95 #include <contrib/v4l/videodev.h>
96 #include <compat/linux/linux_videodev_compat.h>
97 
98 #include <contrib/v4l/videodev2.h>
99 #include <compat/linux/linux_videodev2_compat.h>
100 
101 #include <cam/scsi/scsi_sg.h>
102 
103 CTASSERT(LINUX_IFNAMSIZ == IFNAMSIZ);
104 
105 #define	DEFINE_LINUX_IOCTL_SET(shortname, SHORTNAME)		\
106 static linux_ioctl_function_t linux_ioctl_ ## shortname;	\
107 static struct linux_ioctl_handler shortname ## _handler = {	\
108 	.func = linux_ioctl_ ## shortname,			\
109 	.low = LINUX_IOCTL_ ## SHORTNAME ## _MIN,		\
110 	.high = LINUX_IOCTL_ ## SHORTNAME ## _MAX,		\
111 };								\
112 DATA_SET(linux_ioctl_handler_set, shortname ## _handler)
113 
114 DEFINE_LINUX_IOCTL_SET(cdrom, CDROM);
115 DEFINE_LINUX_IOCTL_SET(vfat, VFAT);
116 DEFINE_LINUX_IOCTL_SET(console, CONSOLE);
117 DEFINE_LINUX_IOCTL_SET(hdio, HDIO);
118 DEFINE_LINUX_IOCTL_SET(disk, DISK);
119 DEFINE_LINUX_IOCTL_SET(socket, SOCKET);
120 DEFINE_LINUX_IOCTL_SET(sound, SOUND);
121 DEFINE_LINUX_IOCTL_SET(termio, TERMIO);
122 DEFINE_LINUX_IOCTL_SET(private, PRIVATE);
123 DEFINE_LINUX_IOCTL_SET(drm, DRM);
124 DEFINE_LINUX_IOCTL_SET(sg, SG);
125 DEFINE_LINUX_IOCTL_SET(v4l, VIDEO);
126 DEFINE_LINUX_IOCTL_SET(v4l2, VIDEO2);
127 DEFINE_LINUX_IOCTL_SET(fbsd_usb, FBSD_LUSB);
128 DEFINE_LINUX_IOCTL_SET(evdev, EVDEV);
129 DEFINE_LINUX_IOCTL_SET(kcov, KCOV);
130 
131 #undef DEFINE_LINUX_IOCTL_SET
132 
133 static int linux_ioctl_special(struct thread *, struct linux_ioctl_args *);
134 
135 /*
136  * Keep sorted by low.
137  */
138 static struct linux_ioctl_handler linux_ioctls[] = {
139 	{ .func = linux_ioctl_termio, .low = LINUX_IOCTL_TERMIO_MIN,
140 	    .high = LINUX_IOCTL_TERMIO_MAX },
141 };
142 
143 #ifdef __i386__
144 static TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers =
145     TAILQ_HEAD_INITIALIZER(linux_ioctl_handlers);
146 static struct sx linux_ioctl_sx;
147 SX_SYSINIT(linux_ioctl, &linux_ioctl_sx, "Linux ioctl handlers");
148 #else
149 extern TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers;
150 extern struct sx linux_ioctl_sx;
151 #endif
152 #ifdef COMPAT_LINUX32
153 static TAILQ_HEAD(, linux_ioctl_handler_element) linux32_ioctl_handlers =
154     TAILQ_HEAD_INITIALIZER(linux32_ioctl_handlers);
155 #endif
156 
157 /*
158  * hdio related ioctls for VMWare support
159  */
160 
161 struct linux_hd_geometry {
162 	u_int8_t	heads;
163 	u_int8_t	sectors;
164 	u_int16_t	cylinders;
165 	u_int32_t	start;
166 };
167 
168 struct linux_hd_big_geometry {
169 	u_int8_t	heads;
170 	u_int8_t	sectors;
171 	u_int32_t	cylinders;
172 	u_int32_t	start;
173 };
174 
175 static int
176 linux_ioctl_hdio(struct thread *td, struct linux_ioctl_args *args)
177 {
178 	struct file *fp;
179 	int error;
180 	u_int sectorsize, fwcylinders, fwheads, fwsectors;
181 	off_t mediasize, bytespercyl;
182 
183 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
184 	if (error != 0)
185 		return (error);
186 	switch (args->cmd & 0xffff) {
187 	case LINUX_HDIO_GET_GEO:
188 	case LINUX_HDIO_GET_GEO_BIG:
189 		error = fo_ioctl(fp, DIOCGMEDIASIZE,
190 			(caddr_t)&mediasize, td->td_ucred, td);
191 		if (!error)
192 			error = fo_ioctl(fp, DIOCGSECTORSIZE,
193 				(caddr_t)&sectorsize, td->td_ucred, td);
194 		if (!error)
195 			error = fo_ioctl(fp, DIOCGFWHEADS,
196 				(caddr_t)&fwheads, td->td_ucred, td);
197 		if (!error)
198 			error = fo_ioctl(fp, DIOCGFWSECTORS,
199 				(caddr_t)&fwsectors, td->td_ucred, td);
200 		/*
201 		 * XXX: DIOCGFIRSTOFFSET is not yet implemented, so
202 		 * so pretend that GEOM always says 0. This is NOT VALID
203 		 * for slices or partitions, only the per-disk raw devices.
204 		 */
205 
206 		fdrop(fp, td);
207 		if (error)
208 			return (error);
209 		/*
210 		 * 1. Calculate the number of bytes in a cylinder,
211 		 *    given the firmware's notion of heads and sectors
212 		 *    per cylinder.
213 		 * 2. Calculate the number of cylinders, given the total
214 		 *    size of the media.
215 		 * All internal calculations should have 64-bit precision.
216 		 */
217 		bytespercyl = (off_t) sectorsize * fwheads * fwsectors;
218 		fwcylinders = mediasize / bytespercyl;
219 
220 		if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO) {
221 			struct linux_hd_geometry hdg;
222 
223 			hdg.cylinders = fwcylinders;
224 			hdg.heads = fwheads;
225 			hdg.sectors = fwsectors;
226 			hdg.start = 0;
227 			error = copyout(&hdg, (void *)args->arg, sizeof(hdg));
228 		} else if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO_BIG) {
229 			struct linux_hd_big_geometry hdbg;
230 
231 			memset(&hdbg, 0, sizeof(hdbg));
232 			hdbg.cylinders = fwcylinders;
233 			hdbg.heads = fwheads;
234 			hdbg.sectors = fwsectors;
235 			hdbg.start = 0;
236 			error = copyout(&hdbg, (void *)args->arg, sizeof(hdbg));
237 		}
238 		return (error);
239 		break;
240 	default:
241 		/* XXX */
242 		linux_msg(td,
243 			"%s fd=%d, cmd=0x%x ('%c',%d) is not implemented",
244 			__func__, args->fd, args->cmd,
245 			(int)(args->cmd & 0xff00) >> 8,
246 			(int)(args->cmd & 0xff));
247 		break;
248 	}
249 	fdrop(fp, td);
250 	return (ENOIOCTL);
251 }
252 
253 static int
254 linux_ioctl_disk(struct thread *td, struct linux_ioctl_args *args)
255 {
256 	struct file *fp;
257 	int error;
258 	u_int sectorsize, psectorsize;
259 	uint64_t blksize64;
260 	off_t mediasize, stripesize;
261 
262 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
263 	if (error != 0)
264 		return (error);
265 	switch (args->cmd & 0xffff) {
266 	case LINUX_BLKGETSIZE:
267 		error = fo_ioctl(fp, DIOCGSECTORSIZE,
268 		    (caddr_t)&sectorsize, td->td_ucred, td);
269 		if (!error)
270 			error = fo_ioctl(fp, DIOCGMEDIASIZE,
271 			    (caddr_t)&mediasize, td->td_ucred, td);
272 		fdrop(fp, td);
273 		if (error)
274 			return (error);
275 		sectorsize = mediasize / sectorsize;
276 		/*
277 		 * XXX: How do we know we return the right size of integer ?
278 		 */
279 		return (copyout(&sectorsize, (void *)args->arg,
280 		    sizeof(sectorsize)));
281 		break;
282 	case LINUX_BLKGETSIZE64:
283 		error = fo_ioctl(fp, DIOCGMEDIASIZE,
284 		    (caddr_t)&mediasize, td->td_ucred, td);
285 		fdrop(fp, td);
286 		if (error)
287 			return (error);
288 		blksize64 = mediasize;;
289 		return (copyout(&blksize64, (void *)args->arg,
290 		    sizeof(blksize64)));
291 	case LINUX_BLKSSZGET:
292 		error = fo_ioctl(fp, DIOCGSECTORSIZE,
293 		    (caddr_t)&sectorsize, td->td_ucred, td);
294 		fdrop(fp, td);
295 		if (error)
296 			return (error);
297 		return (copyout(&sectorsize, (void *)args->arg,
298 		    sizeof(sectorsize)));
299 		break;
300 	case LINUX_BLKPBSZGET:
301 		error = fo_ioctl(fp, DIOCGSTRIPESIZE,
302 		    (caddr_t)&stripesize, td->td_ucred, td);
303 		if (error != 0) {
304 			fdrop(fp, td);
305 			return (error);
306 		}
307 		if (stripesize > 0 && stripesize <= 4096) {
308 			psectorsize = stripesize;
309 		} else  {
310 			error = fo_ioctl(fp, DIOCGSECTORSIZE,
311 			    (caddr_t)&sectorsize, td->td_ucred, td);
312 			if (error != 0) {
313 				fdrop(fp, td);
314 				return (error);
315 			}
316 			psectorsize = sectorsize;
317 		}
318 		fdrop(fp, td);
319 		return (copyout(&psectorsize, (void *)args->arg,
320 		    sizeof(psectorsize)));
321 	}
322 	fdrop(fp, td);
323 	return (ENOIOCTL);
324 }
325 
326 /*
327  * termio related ioctls
328  */
329 
330 struct linux_termio {
331 	unsigned short c_iflag;
332 	unsigned short c_oflag;
333 	unsigned short c_cflag;
334 	unsigned short c_lflag;
335 	unsigned char c_line;
336 	unsigned char c_cc[LINUX_NCC];
337 };
338 
339 struct linux_termios {
340 	unsigned int c_iflag;
341 	unsigned int c_oflag;
342 	unsigned int c_cflag;
343 	unsigned int c_lflag;
344 	unsigned char c_line;
345 	unsigned char c_cc[LINUX_NCCS];
346 };
347 
348 struct linux_winsize {
349 	unsigned short ws_row, ws_col;
350 	unsigned short ws_xpixel, ws_ypixel;
351 };
352 
353 struct speedtab {
354 	int sp_speed;			/* Speed. */
355 	int sp_code;			/* Code. */
356 };
357 
358 static struct speedtab sptab[] = {
359 	{ B0, LINUX_B0 }, { B50, LINUX_B50 },
360 	{ B75, LINUX_B75 }, { B110, LINUX_B110 },
361 	{ B134, LINUX_B134 }, { B150, LINUX_B150 },
362 	{ B200, LINUX_B200 }, { B300, LINUX_B300 },
363 	{ B600, LINUX_B600 }, { B1200, LINUX_B1200 },
364 	{ B1800, LINUX_B1800 }, { B2400, LINUX_B2400 },
365 	{ B4800, LINUX_B4800 }, { B9600, LINUX_B9600 },
366 	{ B19200, LINUX_B19200 }, { B38400, LINUX_B38400 },
367 	{ B57600, LINUX_B57600 }, { B115200, LINUX_B115200 },
368 	{-1, -1 }
369 };
370 
371 struct linux_serial_struct {
372 	int	type;
373 	int	line;
374 	int	port;
375 	int	irq;
376 	int	flags;
377 	int	xmit_fifo_size;
378 	int	custom_divisor;
379 	int	baud_base;
380 	unsigned short close_delay;
381 	char	reserved_char[2];
382 	int	hub6;
383 	unsigned short closing_wait;
384 	unsigned short closing_wait2;
385 	int	reserved[4];
386 };
387 
388 static int
389 linux_to_bsd_speed(int code, struct speedtab *table)
390 {
391 	for ( ; table->sp_code != -1; table++)
392 		if (table->sp_code == code)
393 			return (table->sp_speed);
394 	return (-1);
395 }
396 
397 static int
398 bsd_to_linux_speed(int speed, struct speedtab *table)
399 {
400 	for ( ; table->sp_speed != -1; table++)
401 		if (table->sp_speed == speed)
402 			return (table->sp_code);
403 	return (-1);
404 }
405 
406 static void
407 bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
408 {
409 	int i;
410 
411 	lios->c_iflag = 0;
412 	if (bios->c_iflag & IGNBRK)
413 		lios->c_iflag |= LINUX_IGNBRK;
414 	if (bios->c_iflag & BRKINT)
415 		lios->c_iflag |= LINUX_BRKINT;
416 	if (bios->c_iflag & IGNPAR)
417 		lios->c_iflag |= LINUX_IGNPAR;
418 	if (bios->c_iflag & PARMRK)
419 		lios->c_iflag |= LINUX_PARMRK;
420 	if (bios->c_iflag & INPCK)
421 		lios->c_iflag |= LINUX_INPCK;
422 	if (bios->c_iflag & ISTRIP)
423 		lios->c_iflag |= LINUX_ISTRIP;
424 	if (bios->c_iflag & INLCR)
425 		lios->c_iflag |= LINUX_INLCR;
426 	if (bios->c_iflag & IGNCR)
427 		lios->c_iflag |= LINUX_IGNCR;
428 	if (bios->c_iflag & ICRNL)
429 		lios->c_iflag |= LINUX_ICRNL;
430 	if (bios->c_iflag & IXON)
431 		lios->c_iflag |= LINUX_IXON;
432 	if (bios->c_iflag & IXANY)
433 		lios->c_iflag |= LINUX_IXANY;
434 	if (bios->c_iflag & IXOFF)
435 		lios->c_iflag |= LINUX_IXOFF;
436 	if (bios->c_iflag & IMAXBEL)
437 		lios->c_iflag |= LINUX_IMAXBEL;
438 
439 	lios->c_oflag = 0;
440 	if (bios->c_oflag & OPOST)
441 		lios->c_oflag |= LINUX_OPOST;
442 	if (bios->c_oflag & ONLCR)
443 		lios->c_oflag |= LINUX_ONLCR;
444 	if (bios->c_oflag & TAB3)
445 		lios->c_oflag |= LINUX_XTABS;
446 
447 	lios->c_cflag = bsd_to_linux_speed(bios->c_ispeed, sptab);
448 	lios->c_cflag |= (bios->c_cflag & CSIZE) >> 4;
449 	if (bios->c_cflag & CSTOPB)
450 		lios->c_cflag |= LINUX_CSTOPB;
451 	if (bios->c_cflag & CREAD)
452 		lios->c_cflag |= LINUX_CREAD;
453 	if (bios->c_cflag & PARENB)
454 		lios->c_cflag |= LINUX_PARENB;
455 	if (bios->c_cflag & PARODD)
456 		lios->c_cflag |= LINUX_PARODD;
457 	if (bios->c_cflag & HUPCL)
458 		lios->c_cflag |= LINUX_HUPCL;
459 	if (bios->c_cflag & CLOCAL)
460 		lios->c_cflag |= LINUX_CLOCAL;
461 	if (bios->c_cflag & CRTSCTS)
462 		lios->c_cflag |= LINUX_CRTSCTS;
463 
464 	lios->c_lflag = 0;
465 	if (bios->c_lflag & ISIG)
466 		lios->c_lflag |= LINUX_ISIG;
467 	if (bios->c_lflag & ICANON)
468 		lios->c_lflag |= LINUX_ICANON;
469 	if (bios->c_lflag & ECHO)
470 		lios->c_lflag |= LINUX_ECHO;
471 	if (bios->c_lflag & ECHOE)
472 		lios->c_lflag |= LINUX_ECHOE;
473 	if (bios->c_lflag & ECHOK)
474 		lios->c_lflag |= LINUX_ECHOK;
475 	if (bios->c_lflag & ECHONL)
476 		lios->c_lflag |= LINUX_ECHONL;
477 	if (bios->c_lflag & NOFLSH)
478 		lios->c_lflag |= LINUX_NOFLSH;
479 	if (bios->c_lflag & TOSTOP)
480 		lios->c_lflag |= LINUX_TOSTOP;
481 	if (bios->c_lflag & ECHOCTL)
482 		lios->c_lflag |= LINUX_ECHOCTL;
483 	if (bios->c_lflag & ECHOPRT)
484 		lios->c_lflag |= LINUX_ECHOPRT;
485 	if (bios->c_lflag & ECHOKE)
486 		lios->c_lflag |= LINUX_ECHOKE;
487 	if (bios->c_lflag & FLUSHO)
488 		lios->c_lflag |= LINUX_FLUSHO;
489 	if (bios->c_lflag & PENDIN)
490 		lios->c_lflag |= LINUX_PENDIN;
491 	if (bios->c_lflag & IEXTEN)
492 		lios->c_lflag |= LINUX_IEXTEN;
493 
494 	for (i=0; i<LINUX_NCCS; i++)
495 		lios->c_cc[i] = LINUX_POSIX_VDISABLE;
496 	lios->c_cc[LINUX_VINTR] = bios->c_cc[VINTR];
497 	lios->c_cc[LINUX_VQUIT] = bios->c_cc[VQUIT];
498 	lios->c_cc[LINUX_VERASE] = bios->c_cc[VERASE];
499 	lios->c_cc[LINUX_VKILL] = bios->c_cc[VKILL];
500 	lios->c_cc[LINUX_VEOF] = bios->c_cc[VEOF];
501 	lios->c_cc[LINUX_VEOL] = bios->c_cc[VEOL];
502 	lios->c_cc[LINUX_VMIN] = bios->c_cc[VMIN];
503 	lios->c_cc[LINUX_VTIME] = bios->c_cc[VTIME];
504 	lios->c_cc[LINUX_VEOL2] = bios->c_cc[VEOL2];
505 	lios->c_cc[LINUX_VSUSP] = bios->c_cc[VSUSP];
506 	lios->c_cc[LINUX_VSTART] = bios->c_cc[VSTART];
507 	lios->c_cc[LINUX_VSTOP] = bios->c_cc[VSTOP];
508 	lios->c_cc[LINUX_VREPRINT] = bios->c_cc[VREPRINT];
509 	lios->c_cc[LINUX_VDISCARD] = bios->c_cc[VDISCARD];
510 	lios->c_cc[LINUX_VWERASE] = bios->c_cc[VWERASE];
511 	lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
512 	if (linux_preserve_vstatus)
513 		lios->c_cc[LINUX_VSTATUS] = bios->c_cc[VSTATUS];
514 
515 	for (i=0; i<LINUX_NCCS; i++) {
516 		if (i != LINUX_VMIN && i != LINUX_VTIME &&
517 		    lios->c_cc[i] == _POSIX_VDISABLE)
518 			lios->c_cc[i] = LINUX_POSIX_VDISABLE;
519 	}
520 	lios->c_line = 0;
521 }
522 
523 static void
524 linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
525 {
526 	int i;
527 
528 	bios->c_iflag = 0;
529 	if (lios->c_iflag & LINUX_IGNBRK)
530 		bios->c_iflag |= IGNBRK;
531 	if (lios->c_iflag & LINUX_BRKINT)
532 		bios->c_iflag |= BRKINT;
533 	if (lios->c_iflag & LINUX_IGNPAR)
534 		bios->c_iflag |= IGNPAR;
535 	if (lios->c_iflag & LINUX_PARMRK)
536 		bios->c_iflag |= PARMRK;
537 	if (lios->c_iflag & LINUX_INPCK)
538 		bios->c_iflag |= INPCK;
539 	if (lios->c_iflag & LINUX_ISTRIP)
540 		bios->c_iflag |= ISTRIP;
541 	if (lios->c_iflag & LINUX_INLCR)
542 		bios->c_iflag |= INLCR;
543 	if (lios->c_iflag & LINUX_IGNCR)
544 		bios->c_iflag |= IGNCR;
545 	if (lios->c_iflag & LINUX_ICRNL)
546 		bios->c_iflag |= ICRNL;
547 	if (lios->c_iflag & LINUX_IXON)
548 		bios->c_iflag |= IXON;
549 	if (lios->c_iflag & LINUX_IXANY)
550 		bios->c_iflag |= IXANY;
551 	if (lios->c_iflag & LINUX_IXOFF)
552 		bios->c_iflag |= IXOFF;
553 	if (lios->c_iflag & LINUX_IMAXBEL)
554 		bios->c_iflag |= IMAXBEL;
555 
556 	bios->c_oflag = 0;
557 	if (lios->c_oflag & LINUX_OPOST)
558 		bios->c_oflag |= OPOST;
559 	if (lios->c_oflag & LINUX_ONLCR)
560 		bios->c_oflag |= ONLCR;
561 	if (lios->c_oflag & LINUX_XTABS)
562 		bios->c_oflag |= TAB3;
563 
564 	bios->c_cflag = (lios->c_cflag & LINUX_CSIZE) << 4;
565 	if (lios->c_cflag & LINUX_CSTOPB)
566 		bios->c_cflag |= CSTOPB;
567 	if (lios->c_cflag & LINUX_CREAD)
568 		bios->c_cflag |= CREAD;
569 	if (lios->c_cflag & LINUX_PARENB)
570 		bios->c_cflag |= PARENB;
571 	if (lios->c_cflag & LINUX_PARODD)
572 		bios->c_cflag |= PARODD;
573 	if (lios->c_cflag & LINUX_HUPCL)
574 		bios->c_cflag |= HUPCL;
575 	if (lios->c_cflag & LINUX_CLOCAL)
576 		bios->c_cflag |= CLOCAL;
577 	if (lios->c_cflag & LINUX_CRTSCTS)
578 		bios->c_cflag |= CRTSCTS;
579 
580 	bios->c_lflag = 0;
581 	if (lios->c_lflag & LINUX_ISIG)
582 		bios->c_lflag |= ISIG;
583 	if (lios->c_lflag & LINUX_ICANON)
584 		bios->c_lflag |= ICANON;
585 	if (lios->c_lflag & LINUX_ECHO)
586 		bios->c_lflag |= ECHO;
587 	if (lios->c_lflag & LINUX_ECHOE)
588 		bios->c_lflag |= ECHOE;
589 	if (lios->c_lflag & LINUX_ECHOK)
590 		bios->c_lflag |= ECHOK;
591 	if (lios->c_lflag & LINUX_ECHONL)
592 		bios->c_lflag |= ECHONL;
593 	if (lios->c_lflag & LINUX_NOFLSH)
594 		bios->c_lflag |= NOFLSH;
595 	if (lios->c_lflag & LINUX_TOSTOP)
596 		bios->c_lflag |= TOSTOP;
597 	if (lios->c_lflag & LINUX_ECHOCTL)
598 		bios->c_lflag |= ECHOCTL;
599 	if (lios->c_lflag & LINUX_ECHOPRT)
600 		bios->c_lflag |= ECHOPRT;
601 	if (lios->c_lflag & LINUX_ECHOKE)
602 		bios->c_lflag |= ECHOKE;
603 	if (lios->c_lflag & LINUX_FLUSHO)
604 		bios->c_lflag |= FLUSHO;
605 	if (lios->c_lflag & LINUX_PENDIN)
606 		bios->c_lflag |= PENDIN;
607 	if (lios->c_lflag & LINUX_IEXTEN)
608 		bios->c_lflag |= IEXTEN;
609 
610 	for (i=0; i<NCCS; i++)
611 		bios->c_cc[i] = _POSIX_VDISABLE;
612 	bios->c_cc[VINTR] = lios->c_cc[LINUX_VINTR];
613 	bios->c_cc[VQUIT] = lios->c_cc[LINUX_VQUIT];
614 	bios->c_cc[VERASE] = lios->c_cc[LINUX_VERASE];
615 	bios->c_cc[VKILL] = lios->c_cc[LINUX_VKILL];
616 	bios->c_cc[VEOF] = lios->c_cc[LINUX_VEOF];
617 	bios->c_cc[VEOL] = lios->c_cc[LINUX_VEOL];
618 	bios->c_cc[VMIN] = lios->c_cc[LINUX_VMIN];
619 	bios->c_cc[VTIME] = lios->c_cc[LINUX_VTIME];
620 	bios->c_cc[VEOL2] = lios->c_cc[LINUX_VEOL2];
621 	bios->c_cc[VSUSP] = lios->c_cc[LINUX_VSUSP];
622 	bios->c_cc[VSTART] = lios->c_cc[LINUX_VSTART];
623 	bios->c_cc[VSTOP] = lios->c_cc[LINUX_VSTOP];
624 	bios->c_cc[VREPRINT] = lios->c_cc[LINUX_VREPRINT];
625 	bios->c_cc[VDISCARD] = lios->c_cc[LINUX_VDISCARD];
626 	bios->c_cc[VWERASE] = lios->c_cc[LINUX_VWERASE];
627 	bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
628 	if (linux_preserve_vstatus)
629 		bios->c_cc[VSTATUS] = lios->c_cc[LINUX_VSTATUS];
630 
631 	for (i=0; i<NCCS; i++) {
632 		if (i != VMIN && i != VTIME &&
633 		    bios->c_cc[i] == LINUX_POSIX_VDISABLE)
634 			bios->c_cc[i] = _POSIX_VDISABLE;
635 	}
636 
637 	bios->c_ispeed = bios->c_ospeed =
638 	    linux_to_bsd_speed(lios->c_cflag & LINUX_CBAUD, sptab);
639 }
640 
641 static void
642 bsd_to_linux_termio(struct termios *bios, struct linux_termio *lio)
643 {
644 	struct linux_termios lios;
645 
646 	memset(lio, 0, sizeof(*lio));
647 	bsd_to_linux_termios(bios, &lios);
648 	lio->c_iflag = lios.c_iflag;
649 	lio->c_oflag = lios.c_oflag;
650 	lio->c_cflag = lios.c_cflag;
651 	lio->c_lflag = lios.c_lflag;
652 	lio->c_line  = lios.c_line;
653 	memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
654 }
655 
656 static void
657 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
658 {
659 	struct linux_termios lios;
660 	int i;
661 
662 	lios.c_iflag = lio->c_iflag;
663 	lios.c_oflag = lio->c_oflag;
664 	lios.c_cflag = lio->c_cflag;
665 	lios.c_lflag = lio->c_lflag;
666 	for (i=LINUX_NCC; i<LINUX_NCCS; i++)
667 		lios.c_cc[i] = LINUX_POSIX_VDISABLE;
668 	memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
669 	linux_to_bsd_termios(&lios, bios);
670 }
671 
672 static int
673 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
674 {
675 	struct termios bios;
676 	struct linux_termios lios;
677 	struct linux_termio lio;
678 	struct file *fp;
679 	int error;
680 
681 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
682 	if (error != 0)
683 		return (error);
684 
685 	switch (args->cmd & 0xffff) {
686 	case LINUX_TCGETS:
687 		error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
688 		    td);
689 		if (error)
690 			break;
691 		bsd_to_linux_termios(&bios, &lios);
692 		error = copyout(&lios, (void *)args->arg, sizeof(lios));
693 		break;
694 
695 	case LINUX_TCSETS:
696 		error = copyin((void *)args->arg, &lios, sizeof(lios));
697 		if (error)
698 			break;
699 		linux_to_bsd_termios(&lios, &bios);
700 		error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
701 		    td));
702 		break;
703 
704 	case LINUX_TCSETSW:
705 		error = copyin((void *)args->arg, &lios, sizeof(lios));
706 		if (error)
707 			break;
708 		linux_to_bsd_termios(&lios, &bios);
709 		error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
710 		    td));
711 		break;
712 
713 	case LINUX_TCSETSF:
714 		error = copyin((void *)args->arg, &lios, sizeof(lios));
715 		if (error)
716 			break;
717 		linux_to_bsd_termios(&lios, &bios);
718 		error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
719 		    td));
720 		break;
721 
722 	case LINUX_TCGETA:
723 		error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
724 		    td);
725 		if (error)
726 			break;
727 		bsd_to_linux_termio(&bios, &lio);
728 		error = (copyout(&lio, (void *)args->arg, sizeof(lio)));
729 		break;
730 
731 	case LINUX_TCSETA:
732 		error = copyin((void *)args->arg, &lio, sizeof(lio));
733 		if (error)
734 			break;
735 		linux_to_bsd_termio(&lio, &bios);
736 		error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
737 		    td));
738 		break;
739 
740 	case LINUX_TCSETAW:
741 		error = copyin((void *)args->arg, &lio, sizeof(lio));
742 		if (error)
743 			break;
744 		linux_to_bsd_termio(&lio, &bios);
745 		error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
746 		    td));
747 		break;
748 
749 	case LINUX_TCSETAF:
750 		error = copyin((void *)args->arg, &lio, sizeof(lio));
751 		if (error)
752 			break;
753 		linux_to_bsd_termio(&lio, &bios);
754 		error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
755 		    td));
756 		break;
757 
758 	case LINUX_TCSBRK:
759 		if (args->arg != 0) {
760 			error = (fo_ioctl(fp, TIOCDRAIN, (caddr_t)&bios, td->td_ucred,
761 			    td));
762 		} else {
763 			linux_msg(td, "ioctl TCSBRK arg 0 not implemented");
764 			error = ENOIOCTL;
765 		}
766 		break;
767 
768 	case LINUX_TCXONC: {
769 		switch (args->arg) {
770 		case LINUX_TCOOFF:
771 			args->cmd = TIOCSTOP;
772 			break;
773 		case LINUX_TCOON:
774 			args->cmd = TIOCSTART;
775 			break;
776 		case LINUX_TCIOFF:
777 		case LINUX_TCION: {
778 			int c;
779 			struct write_args wr;
780 			error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
781 			    td->td_ucred, td);
782 			if (error)
783 				break;
784 			fdrop(fp, td);
785 			c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
786 			c = bios.c_cc[c];
787 			if (c != _POSIX_VDISABLE) {
788 				wr.fd = args->fd;
789 				wr.buf = &c;
790 				wr.nbyte = sizeof(c);
791 				return (sys_write(td, &wr));
792 			} else
793 				return (0);
794 		}
795 		default:
796 			fdrop(fp, td);
797 			return (EINVAL);
798 		}
799 		args->arg = 0;
800 		error = (sys_ioctl(td, (struct ioctl_args *)args));
801 		break;
802 	}
803 
804 	case LINUX_TCFLSH: {
805 		int val;
806 		switch (args->arg) {
807 		case LINUX_TCIFLUSH:
808 			val = FREAD;
809 			break;
810 		case LINUX_TCOFLUSH:
811 			val = FWRITE;
812 			break;
813 		case LINUX_TCIOFLUSH:
814 			val = FREAD | FWRITE;
815 			break;
816 		default:
817 			fdrop(fp, td);
818 			return (EINVAL);
819 		}
820 		error = (fo_ioctl(fp,TIOCFLUSH,(caddr_t)&val,td->td_ucred,td));
821 		break;
822 	}
823 
824 	case LINUX_TIOCEXCL:
825 		args->cmd = TIOCEXCL;
826 		error = (sys_ioctl(td, (struct ioctl_args *)args));
827 		break;
828 
829 	case LINUX_TIOCNXCL:
830 		args->cmd = TIOCNXCL;
831 		error = (sys_ioctl(td, (struct ioctl_args *)args));
832 		break;
833 
834 	case LINUX_TIOCSCTTY:
835 		args->cmd = TIOCSCTTY;
836 		error = (sys_ioctl(td, (struct ioctl_args *)args));
837 		break;
838 
839 	case LINUX_TIOCGPGRP:
840 		args->cmd = TIOCGPGRP;
841 		error = (sys_ioctl(td, (struct ioctl_args *)args));
842 		break;
843 
844 	case LINUX_TIOCSPGRP:
845 		args->cmd = TIOCSPGRP;
846 		error = (sys_ioctl(td, (struct ioctl_args *)args));
847 		break;
848 
849 	/* LINUX_TIOCOUTQ */
850 	/* LINUX_TIOCSTI */
851 
852 	case LINUX_TIOCGWINSZ:
853 		args->cmd = TIOCGWINSZ;
854 		error = (sys_ioctl(td, (struct ioctl_args *)args));
855 		break;
856 
857 	case LINUX_TIOCSWINSZ:
858 		args->cmd = TIOCSWINSZ;
859 		error = (sys_ioctl(td, (struct ioctl_args *)args));
860 		break;
861 
862 	case LINUX_TIOCMGET:
863 		args->cmd = TIOCMGET;
864 		error = (sys_ioctl(td, (struct ioctl_args *)args));
865 		break;
866 
867 	case LINUX_TIOCMBIS:
868 		args->cmd = TIOCMBIS;
869 		error = (sys_ioctl(td, (struct ioctl_args *)args));
870 		break;
871 
872 	case LINUX_TIOCMBIC:
873 		args->cmd = TIOCMBIC;
874 		error = (sys_ioctl(td, (struct ioctl_args *)args));
875 		break;
876 
877 	case LINUX_TIOCMSET:
878 		args->cmd = TIOCMSET;
879 		error = (sys_ioctl(td, (struct ioctl_args *)args));
880 		break;
881 
882 	/* TIOCGSOFTCAR */
883 	/* TIOCSSOFTCAR */
884 
885 	case LINUX_FIONREAD: /* LINUX_TIOCINQ */
886 		args->cmd = FIONREAD;
887 		error = (sys_ioctl(td, (struct ioctl_args *)args));
888 		break;
889 
890 	/* LINUX_TIOCLINUX */
891 
892 	case LINUX_TIOCCONS:
893 		args->cmd = TIOCCONS;
894 		error = (sys_ioctl(td, (struct ioctl_args *)args));
895 		break;
896 
897 	case LINUX_TIOCGSERIAL: {
898 		struct linux_serial_struct lss;
899 
900 		bzero(&lss, sizeof(lss));
901 		lss.type = LINUX_PORT_16550A;
902 		lss.flags = 0;
903 		lss.close_delay = 0;
904 		error = copyout(&lss, (void *)args->arg, sizeof(lss));
905 		break;
906 	}
907 
908 	case LINUX_TIOCSSERIAL: {
909 		struct linux_serial_struct lss;
910 		error = copyin((void *)args->arg, &lss, sizeof(lss));
911 		if (error)
912 			break;
913 		/* XXX - It really helps to have an implementation that
914 		 * does nothing. NOT!
915 		 */
916 		error = 0;
917 		break;
918 	}
919 
920 	case LINUX_TIOCPKT:
921 		args->cmd = TIOCPKT;
922 		error = (sys_ioctl(td, (struct ioctl_args *)args));
923 		break;
924 
925 	case LINUX_FIONBIO:
926 		args->cmd = FIONBIO;
927 		error = (sys_ioctl(td, (struct ioctl_args *)args));
928 		break;
929 
930 	case LINUX_TIOCNOTTY:
931 		args->cmd = TIOCNOTTY;
932 		error = (sys_ioctl(td, (struct ioctl_args *)args));
933 		break;
934 
935 	case LINUX_TIOCSETD: {
936 		int line;
937 		switch (args->arg) {
938 		case LINUX_N_TTY:
939 			line = TTYDISC;
940 			break;
941 		case LINUX_N_SLIP:
942 			line = SLIPDISC;
943 			break;
944 		case LINUX_N_PPP:
945 			line = PPPDISC;
946 			break;
947 		default:
948 			fdrop(fp, td);
949 			return (EINVAL);
950 		}
951 		error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
952 		    td));
953 		break;
954 	}
955 
956 	case LINUX_TIOCGETD: {
957 		int linux_line;
958 		int bsd_line = TTYDISC;
959 		error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
960 		    td->td_ucred, td);
961 		if (error)
962 			break;
963 		switch (bsd_line) {
964 		case TTYDISC:
965 			linux_line = LINUX_N_TTY;
966 			break;
967 		case SLIPDISC:
968 			linux_line = LINUX_N_SLIP;
969 			break;
970 		case PPPDISC:
971 			linux_line = LINUX_N_PPP;
972 			break;
973 		default:
974 			fdrop(fp, td);
975 			return (EINVAL);
976 		}
977 		error = (copyout(&linux_line, (void *)args->arg, sizeof(int)));
978 		break;
979 	}
980 
981 	/* LINUX_TCSBRKP */
982 	/* LINUX_TIOCTTYGSTRUCT */
983 
984 	case LINUX_FIONCLEX:
985 		args->cmd = FIONCLEX;
986 		error = (sys_ioctl(td, (struct ioctl_args *)args));
987 		break;
988 
989 	case LINUX_FIOCLEX:
990 		args->cmd = FIOCLEX;
991 		error = (sys_ioctl(td, (struct ioctl_args *)args));
992 		break;
993 
994 	case LINUX_FIOASYNC:
995 		args->cmd = FIOASYNC;
996 		error = (sys_ioctl(td, (struct ioctl_args *)args));
997 		break;
998 
999 	/* LINUX_TIOCSERCONFIG */
1000 	/* LINUX_TIOCSERGWILD */
1001 	/* LINUX_TIOCSERSWILD */
1002 	/* LINUX_TIOCGLCKTRMIOS */
1003 	/* LINUX_TIOCSLCKTRMIOS */
1004 
1005 	case LINUX_TIOCSBRK:
1006 		args->cmd = TIOCSBRK;
1007 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1008 		break;
1009 
1010 	case LINUX_TIOCCBRK:
1011 		args->cmd = TIOCCBRK;
1012 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1013 		break;
1014 	case LINUX_TIOCGPTN: {
1015 		int nb;
1016 
1017 		error = fo_ioctl(fp, TIOCGPTN, (caddr_t)&nb, td->td_ucred, td);
1018 		if (!error)
1019 			error = copyout(&nb, (void *)args->arg,
1020 			    sizeof(int));
1021 		break;
1022 	}
1023 	case LINUX_TIOCSPTLCK:
1024 		/* Our unlockpt() does nothing. */
1025 		error = 0;
1026 		break;
1027 	default:
1028 		error = ENOIOCTL;
1029 		break;
1030 	}
1031 
1032 	fdrop(fp, td);
1033 	return (error);
1034 }
1035 
1036 /*
1037  * CDROM related ioctls
1038  */
1039 
1040 struct linux_cdrom_msf
1041 {
1042 	u_char	cdmsf_min0;
1043 	u_char	cdmsf_sec0;
1044 	u_char	cdmsf_frame0;
1045 	u_char	cdmsf_min1;
1046 	u_char	cdmsf_sec1;
1047 	u_char	cdmsf_frame1;
1048 };
1049 
1050 struct linux_cdrom_tochdr
1051 {
1052 	u_char	cdth_trk0;
1053 	u_char	cdth_trk1;
1054 };
1055 
1056 union linux_cdrom_addr
1057 {
1058 	struct {
1059 		u_char	minute;
1060 		u_char	second;
1061 		u_char	frame;
1062 	} msf;
1063 	int	lba;
1064 };
1065 
1066 struct linux_cdrom_tocentry
1067 {
1068 	u_char	cdte_track;
1069 	u_char	cdte_adr:4;
1070 	u_char	cdte_ctrl:4;
1071 	u_char	cdte_format;
1072 	union linux_cdrom_addr cdte_addr;
1073 	u_char	cdte_datamode;
1074 };
1075 
1076 struct linux_cdrom_subchnl
1077 {
1078 	u_char	cdsc_format;
1079 	u_char	cdsc_audiostatus;
1080 	u_char	cdsc_adr:4;
1081 	u_char	cdsc_ctrl:4;
1082 	u_char	cdsc_trk;
1083 	u_char	cdsc_ind;
1084 	union linux_cdrom_addr cdsc_absaddr;
1085 	union linux_cdrom_addr cdsc_reladdr;
1086 };
1087 
1088 struct l_cdrom_read_audio {
1089 	union linux_cdrom_addr addr;
1090 	u_char		addr_format;
1091 	l_int		nframes;
1092 	u_char		*buf;
1093 };
1094 
1095 struct l_dvd_layer {
1096 	u_char		book_version:4;
1097 	u_char		book_type:4;
1098 	u_char		min_rate:4;
1099 	u_char		disc_size:4;
1100 	u_char		layer_type:4;
1101 	u_char		track_path:1;
1102 	u_char		nlayers:2;
1103 	u_char		track_density:4;
1104 	u_char		linear_density:4;
1105 	u_char		bca:1;
1106 	u_int32_t	start_sector;
1107 	u_int32_t	end_sector;
1108 	u_int32_t	end_sector_l0;
1109 };
1110 
1111 struct l_dvd_physical {
1112 	u_char		type;
1113 	u_char		layer_num;
1114 	struct l_dvd_layer layer[4];
1115 };
1116 
1117 struct l_dvd_copyright {
1118 	u_char		type;
1119 	u_char		layer_num;
1120 	u_char		cpst;
1121 	u_char		rmi;
1122 };
1123 
1124 struct l_dvd_disckey {
1125 	u_char		type;
1126 	l_uint		agid:2;
1127 	u_char		value[2048];
1128 };
1129 
1130 struct l_dvd_bca {
1131 	u_char		type;
1132 	l_int		len;
1133 	u_char		value[188];
1134 };
1135 
1136 struct l_dvd_manufact {
1137 	u_char		type;
1138 	u_char		layer_num;
1139 	l_int		len;
1140 	u_char		value[2048];
1141 };
1142 
1143 typedef union {
1144 	u_char			type;
1145 	struct l_dvd_physical	physical;
1146 	struct l_dvd_copyright	copyright;
1147 	struct l_dvd_disckey	disckey;
1148 	struct l_dvd_bca	bca;
1149 	struct l_dvd_manufact	manufact;
1150 } l_dvd_struct;
1151 
1152 typedef u_char l_dvd_key[5];
1153 typedef u_char l_dvd_challenge[10];
1154 
1155 struct l_dvd_lu_send_agid {
1156 	u_char		type;
1157 	l_uint		agid:2;
1158 };
1159 
1160 struct l_dvd_host_send_challenge {
1161 	u_char		type;
1162 	l_uint		agid:2;
1163 	l_dvd_challenge	chal;
1164 };
1165 
1166 struct l_dvd_send_key {
1167 	u_char		type;
1168 	l_uint		agid:2;
1169 	l_dvd_key	key;
1170 };
1171 
1172 struct l_dvd_lu_send_challenge {
1173 	u_char		type;
1174 	l_uint		agid:2;
1175 	l_dvd_challenge	chal;
1176 };
1177 
1178 struct l_dvd_lu_send_title_key {
1179 	u_char		type;
1180 	l_uint		agid:2;
1181 	l_dvd_key	title_key;
1182 	l_int		lba;
1183 	l_uint		cpm:1;
1184 	l_uint		cp_sec:1;
1185 	l_uint		cgms:2;
1186 };
1187 
1188 struct l_dvd_lu_send_asf {
1189 	u_char		type;
1190 	l_uint		agid:2;
1191 	l_uint		asf:1;
1192 };
1193 
1194 struct l_dvd_host_send_rpcstate {
1195 	u_char		type;
1196 	u_char		pdrc;
1197 };
1198 
1199 struct l_dvd_lu_send_rpcstate {
1200 	u_char		type:2;
1201 	u_char		vra:3;
1202 	u_char		ucca:3;
1203 	u_char		region_mask;
1204 	u_char		rpc_scheme;
1205 };
1206 
1207 typedef union {
1208 	u_char				type;
1209 	struct l_dvd_lu_send_agid	lsa;
1210 	struct l_dvd_host_send_challenge hsc;
1211 	struct l_dvd_send_key		lsk;
1212 	struct l_dvd_lu_send_challenge	lsc;
1213 	struct l_dvd_send_key		hsk;
1214 	struct l_dvd_lu_send_title_key	lstk;
1215 	struct l_dvd_lu_send_asf	lsasf;
1216 	struct l_dvd_host_send_rpcstate	hrpcs;
1217 	struct l_dvd_lu_send_rpcstate	lrpcs;
1218 } l_dvd_authinfo;
1219 
1220 static void
1221 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
1222 {
1223 	if (af == CD_LBA_FORMAT)
1224 		lp->lba = bp->lba;
1225 	else {
1226 		lp->msf.minute = bp->msf.minute;
1227 		lp->msf.second = bp->msf.second;
1228 		lp->msf.frame = bp->msf.frame;
1229 	}
1230 }
1231 
1232 static void
1233 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
1234 {
1235 	if (format == LINUX_CDROM_MSF) {
1236 		addr->msf.frame = lba % 75;
1237 		lba /= 75;
1238 		lba += 2;
1239 		addr->msf.second = lba % 60;
1240 		addr->msf.minute = lba / 60;
1241 	} else
1242 		addr->lba = lba;
1243 }
1244 
1245 static int
1246 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
1247 {
1248 	bp->format = lp->type;
1249 	switch (bp->format) {
1250 	case DVD_STRUCT_PHYSICAL:
1251 		if (bp->layer_num >= 4)
1252 			return (EINVAL);
1253 		bp->layer_num = lp->physical.layer_num;
1254 		break;
1255 	case DVD_STRUCT_COPYRIGHT:
1256 		bp->layer_num = lp->copyright.layer_num;
1257 		break;
1258 	case DVD_STRUCT_DISCKEY:
1259 		bp->agid = lp->disckey.agid;
1260 		break;
1261 	case DVD_STRUCT_BCA:
1262 	case DVD_STRUCT_MANUFACT:
1263 		break;
1264 	default:
1265 		return (EINVAL);
1266 	}
1267 	return (0);
1268 }
1269 
1270 static int
1271 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
1272 {
1273 	switch (bp->format) {
1274 	case DVD_STRUCT_PHYSICAL: {
1275 		struct dvd_layer *blp = (struct dvd_layer *)bp->data;
1276 		struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
1277 		memset(llp, 0, sizeof(*llp));
1278 		llp->book_version = blp->book_version;
1279 		llp->book_type = blp->book_type;
1280 		llp->min_rate = blp->max_rate;
1281 		llp->disc_size = blp->disc_size;
1282 		llp->layer_type = blp->layer_type;
1283 		llp->track_path = blp->track_path;
1284 		llp->nlayers = blp->nlayers;
1285 		llp->track_density = blp->track_density;
1286 		llp->linear_density = blp->linear_density;
1287 		llp->bca = blp->bca;
1288 		llp->start_sector = blp->start_sector;
1289 		llp->end_sector = blp->end_sector;
1290 		llp->end_sector_l0 = blp->end_sector_l0;
1291 		break;
1292 	}
1293 	case DVD_STRUCT_COPYRIGHT:
1294 		lp->copyright.cpst = bp->cpst;
1295 		lp->copyright.rmi = bp->rmi;
1296 		break;
1297 	case DVD_STRUCT_DISCKEY:
1298 		memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
1299 		break;
1300 	case DVD_STRUCT_BCA:
1301 		lp->bca.len = bp->length;
1302 		memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
1303 		break;
1304 	case DVD_STRUCT_MANUFACT:
1305 		lp->manufact.len = bp->length;
1306 		memcpy(lp->manufact.value, bp->data,
1307 		    sizeof(lp->manufact.value));
1308 		/* lp->manufact.layer_num is unused in Linux (redhat 7.0). */
1309 		break;
1310 	default:
1311 		return (EINVAL);
1312 	}
1313 	return (0);
1314 }
1315 
1316 static int
1317 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
1318     struct dvd_authinfo *bp)
1319 {
1320 	switch (lp->type) {
1321 	case LINUX_DVD_LU_SEND_AGID:
1322 		*bcode = DVDIOCREPORTKEY;
1323 		bp->format = DVD_REPORT_AGID;
1324 		bp->agid = lp->lsa.agid;
1325 		break;
1326 	case LINUX_DVD_HOST_SEND_CHALLENGE:
1327 		*bcode = DVDIOCSENDKEY;
1328 		bp->format = DVD_SEND_CHALLENGE;
1329 		bp->agid = lp->hsc.agid;
1330 		memcpy(bp->keychal, lp->hsc.chal, 10);
1331 		break;
1332 	case LINUX_DVD_LU_SEND_KEY1:
1333 		*bcode = DVDIOCREPORTKEY;
1334 		bp->format = DVD_REPORT_KEY1;
1335 		bp->agid = lp->lsk.agid;
1336 		break;
1337 	case LINUX_DVD_LU_SEND_CHALLENGE:
1338 		*bcode = DVDIOCREPORTKEY;
1339 		bp->format = DVD_REPORT_CHALLENGE;
1340 		bp->agid = lp->lsc.agid;
1341 		break;
1342 	case LINUX_DVD_HOST_SEND_KEY2:
1343 		*bcode = DVDIOCSENDKEY;
1344 		bp->format = DVD_SEND_KEY2;
1345 		bp->agid = lp->hsk.agid;
1346 		memcpy(bp->keychal, lp->hsk.key, 5);
1347 		break;
1348 	case LINUX_DVD_LU_SEND_TITLE_KEY:
1349 		*bcode = DVDIOCREPORTKEY;
1350 		bp->format = DVD_REPORT_TITLE_KEY;
1351 		bp->agid = lp->lstk.agid;
1352 		bp->lba = lp->lstk.lba;
1353 		break;
1354 	case LINUX_DVD_LU_SEND_ASF:
1355 		*bcode = DVDIOCREPORTKEY;
1356 		bp->format = DVD_REPORT_ASF;
1357 		bp->agid = lp->lsasf.agid;
1358 		break;
1359 	case LINUX_DVD_INVALIDATE_AGID:
1360 		*bcode = DVDIOCREPORTKEY;
1361 		bp->format = DVD_INVALIDATE_AGID;
1362 		bp->agid = lp->lsa.agid;
1363 		break;
1364 	case LINUX_DVD_LU_SEND_RPC_STATE:
1365 		*bcode = DVDIOCREPORTKEY;
1366 		bp->format = DVD_REPORT_RPC;
1367 		break;
1368 	case LINUX_DVD_HOST_SEND_RPC_STATE:
1369 		*bcode = DVDIOCSENDKEY;
1370 		bp->format = DVD_SEND_RPC;
1371 		bp->region = lp->hrpcs.pdrc;
1372 		break;
1373 	default:
1374 		return (EINVAL);
1375 	}
1376 	return (0);
1377 }
1378 
1379 static int
1380 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
1381 {
1382 	switch (lp->type) {
1383 	case LINUX_DVD_LU_SEND_AGID:
1384 		lp->lsa.agid = bp->agid;
1385 		break;
1386 	case LINUX_DVD_HOST_SEND_CHALLENGE:
1387 		lp->type = LINUX_DVD_LU_SEND_KEY1;
1388 		break;
1389 	case LINUX_DVD_LU_SEND_KEY1:
1390 		memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
1391 		break;
1392 	case LINUX_DVD_LU_SEND_CHALLENGE:
1393 		memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
1394 		break;
1395 	case LINUX_DVD_HOST_SEND_KEY2:
1396 		lp->type = LINUX_DVD_AUTH_ESTABLISHED;
1397 		break;
1398 	case LINUX_DVD_LU_SEND_TITLE_KEY:
1399 		memcpy(lp->lstk.title_key, bp->keychal,
1400 		    sizeof(lp->lstk.title_key));
1401 		lp->lstk.cpm = bp->cpm;
1402 		lp->lstk.cp_sec = bp->cp_sec;
1403 		lp->lstk.cgms = bp->cgms;
1404 		break;
1405 	case LINUX_DVD_LU_SEND_ASF:
1406 		lp->lsasf.asf = bp->asf;
1407 		break;
1408 	case LINUX_DVD_INVALIDATE_AGID:
1409 		break;
1410 	case LINUX_DVD_LU_SEND_RPC_STATE:
1411 		lp->lrpcs.type = bp->reg_type;
1412 		lp->lrpcs.vra = bp->vend_rsts;
1413 		lp->lrpcs.ucca = bp->user_rsts;
1414 		lp->lrpcs.region_mask = bp->region;
1415 		lp->lrpcs.rpc_scheme = bp->rpc_scheme;
1416 		break;
1417 	case LINUX_DVD_HOST_SEND_RPC_STATE:
1418 		break;
1419 	default:
1420 		return (EINVAL);
1421 	}
1422 	return (0);
1423 }
1424 
1425 static int
1426 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
1427 {
1428 	struct file *fp;
1429 	int error;
1430 
1431 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
1432 	if (error != 0)
1433 		return (error);
1434 	switch (args->cmd & 0xffff) {
1435 	case LINUX_CDROMPAUSE:
1436 		args->cmd = CDIOCPAUSE;
1437 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1438 		break;
1439 
1440 	case LINUX_CDROMRESUME:
1441 		args->cmd = CDIOCRESUME;
1442 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1443 		break;
1444 
1445 	case LINUX_CDROMPLAYMSF:
1446 		args->cmd = CDIOCPLAYMSF;
1447 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1448 		break;
1449 
1450 	case LINUX_CDROMPLAYTRKIND:
1451 		args->cmd = CDIOCPLAYTRACKS;
1452 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1453 		break;
1454 
1455 	case LINUX_CDROMREADTOCHDR: {
1456 		struct ioc_toc_header th;
1457 		struct linux_cdrom_tochdr lth;
1458 		error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
1459 		    td->td_ucred, td);
1460 		if (!error) {
1461 			lth.cdth_trk0 = th.starting_track;
1462 			lth.cdth_trk1 = th.ending_track;
1463 			copyout(&lth, (void *)args->arg, sizeof(lth));
1464 		}
1465 		break;
1466 	}
1467 
1468 	case LINUX_CDROMREADTOCENTRY: {
1469 		struct linux_cdrom_tocentry lte;
1470 		struct ioc_read_toc_single_entry irtse;
1471 
1472 		error = copyin((void *)args->arg, &lte, sizeof(lte));
1473 		if (error)
1474 			break;
1475 		irtse.address_format = lte.cdte_format;
1476 		irtse.track = lte.cdte_track;
1477 		error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
1478 		    td->td_ucred, td);
1479 		if (!error) {
1480 			lte.cdte_ctrl = irtse.entry.control;
1481 			lte.cdte_adr = irtse.entry.addr_type;
1482 			bsd_to_linux_msf_lba(irtse.address_format,
1483 			    &irtse.entry.addr, &lte.cdte_addr);
1484 			error = copyout(&lte, (void *)args->arg, sizeof(lte));
1485 		}
1486 		break;
1487 	}
1488 
1489 	case LINUX_CDROMSTOP:
1490 		args->cmd = CDIOCSTOP;
1491 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1492 		break;
1493 
1494 	case LINUX_CDROMSTART:
1495 		args->cmd = CDIOCSTART;
1496 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1497 		break;
1498 
1499 	case LINUX_CDROMEJECT:
1500 		args->cmd = CDIOCEJECT;
1501 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1502 		break;
1503 
1504 	/* LINUX_CDROMVOLCTRL */
1505 
1506 	case LINUX_CDROMSUBCHNL: {
1507 		struct linux_cdrom_subchnl sc;
1508 		struct ioc_read_subchannel bsdsc;
1509 		struct cd_sub_channel_info bsdinfo;
1510 
1511 		error = copyin((void *)args->arg, &sc, sizeof(sc));
1512 		if (error)
1513 			break;
1514 
1515 		/*
1516 		 * Invoke the native ioctl and bounce the returned data through
1517 		 * the userspace buffer.  This works because the Linux structure
1518 		 * is the same size as our structures for the subchannel header
1519 		 * and position data.
1520 		 */
1521 		bsdsc.address_format = CD_LBA_FORMAT;
1522 		bsdsc.data_format = CD_CURRENT_POSITION;
1523 		bsdsc.track = 0;
1524 		bsdsc.data_len = sizeof(sc);
1525 		bsdsc.data = (void *)args->arg;
1526 		error = fo_ioctl(fp, CDIOCREADSUBCHANNEL, (caddr_t)&bsdsc,
1527 		    td->td_ucred, td);
1528 		if (error)
1529 			break;
1530 		error = copyin((void *)args->arg, &bsdinfo, sizeof(bsdinfo));
1531 		if (error)
1532 			break;
1533 		sc.cdsc_audiostatus = bsdinfo.header.audio_status;
1534 		sc.cdsc_adr = bsdinfo.what.position.addr_type;
1535 		sc.cdsc_ctrl = bsdinfo.what.position.control;
1536 		sc.cdsc_trk = bsdinfo.what.position.track_number;
1537 		sc.cdsc_ind = bsdinfo.what.position.index_number;
1538 		set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
1539 		    bsdinfo.what.position.absaddr.lba);
1540 		set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
1541 		    bsdinfo.what.position.reladdr.lba);
1542 		error = copyout(&sc, (void *)args->arg, sizeof(sc));
1543 		break;
1544 	}
1545 
1546 	/* LINUX_CDROMREADMODE2 */
1547 	/* LINUX_CDROMREADMODE1 */
1548 	/* LINUX_CDROMREADAUDIO */
1549 	/* LINUX_CDROMEJECT_SW */
1550 	/* LINUX_CDROMMULTISESSION */
1551 	/* LINUX_CDROM_GET_UPC */
1552 
1553 	case LINUX_CDROMRESET:
1554 		args->cmd = CDIOCRESET;
1555 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1556 		break;
1557 
1558 	/* LINUX_CDROMVOLREAD */
1559 	/* LINUX_CDROMREADRAW */
1560 	/* LINUX_CDROMREADCOOKED */
1561 	/* LINUX_CDROMSEEK */
1562 	/* LINUX_CDROMPLAYBLK */
1563 	/* LINUX_CDROMREADALL */
1564 	/* LINUX_CDROMCLOSETRAY */
1565 	/* LINUX_CDROMLOADFROMSLOT */
1566 	/* LINUX_CDROMGETSPINDOWN */
1567 	/* LINUX_CDROMSETSPINDOWN */
1568 	/* LINUX_CDROM_SET_OPTIONS */
1569 	/* LINUX_CDROM_CLEAR_OPTIONS */
1570 	/* LINUX_CDROM_SELECT_SPEED */
1571 	/* LINUX_CDROM_SELECT_DISC */
1572 	/* LINUX_CDROM_MEDIA_CHANGED */
1573 	/* LINUX_CDROM_DRIVE_STATUS */
1574 	/* LINUX_CDROM_DISC_STATUS */
1575 	/* LINUX_CDROM_CHANGER_NSLOTS */
1576 	/* LINUX_CDROM_LOCKDOOR */
1577 	/* LINUX_CDROM_DEBUG */
1578 	/* LINUX_CDROM_GET_CAPABILITY */
1579 	/* LINUX_CDROMAUDIOBUFSIZ */
1580 
1581 	case LINUX_DVD_READ_STRUCT: {
1582 		l_dvd_struct *lds;
1583 		struct dvd_struct *bds;
1584 
1585 		lds = malloc(sizeof(*lds), M_LINUX, M_WAITOK);
1586 		bds = malloc(sizeof(*bds), M_LINUX, M_WAITOK);
1587 		error = copyin((void *)args->arg, lds, sizeof(*lds));
1588 		if (error)
1589 			goto out;
1590 		error = linux_to_bsd_dvd_struct(lds, bds);
1591 		if (error)
1592 			goto out;
1593 		error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)bds,
1594 		    td->td_ucred, td);
1595 		if (error)
1596 			goto out;
1597 		error = bsd_to_linux_dvd_struct(bds, lds);
1598 		if (error)
1599 			goto out;
1600 		error = copyout(lds, (void *)args->arg, sizeof(*lds));
1601 	out:
1602 		free(bds, M_LINUX);
1603 		free(lds, M_LINUX);
1604 		break;
1605 	}
1606 
1607 	/* LINUX_DVD_WRITE_STRUCT */
1608 
1609 	case LINUX_DVD_AUTH: {
1610 		l_dvd_authinfo lda;
1611 		struct dvd_authinfo bda;
1612 		int bcode;
1613 
1614 		error = copyin((void *)args->arg, &lda, sizeof(lda));
1615 		if (error)
1616 			break;
1617 		error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
1618 		if (error)
1619 			break;
1620 		error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
1621 		    td);
1622 		if (error) {
1623 			if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
1624 				lda.type = LINUX_DVD_AUTH_FAILURE;
1625 				copyout(&lda, (void *)args->arg, sizeof(lda));
1626 			}
1627 			break;
1628 		}
1629 		error = bsd_to_linux_dvd_authinfo(&bda, &lda);
1630 		if (error)
1631 			break;
1632 		error = copyout(&lda, (void *)args->arg, sizeof(lda));
1633 		break;
1634 	}
1635 
1636 	case LINUX_SCSI_GET_BUS_NUMBER:
1637 	{
1638 		struct sg_scsi_id id;
1639 
1640 		error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
1641 		    td->td_ucred, td);
1642 		if (error)
1643 			break;
1644 		error = copyout(&id.channel, (void *)args->arg, sizeof(int));
1645 		break;
1646 	}
1647 
1648 	case LINUX_SCSI_GET_IDLUN:
1649 	{
1650 		struct sg_scsi_id id;
1651 		struct scsi_idlun idl;
1652 
1653 		error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
1654 		    td->td_ucred, td);
1655 		if (error)
1656 			break;
1657 		idl.dev_id = (id.scsi_id & 0xff) + ((id.lun & 0xff) << 8) +
1658 		    ((id.channel & 0xff) << 16) + ((id.host_no & 0xff) << 24);
1659 		idl.host_unique_id = id.host_no;
1660 		error = copyout(&idl, (void *)args->arg, sizeof(idl));
1661 		break;
1662 	}
1663 
1664 	/* LINUX_CDROM_SEND_PACKET */
1665 	/* LINUX_CDROM_NEXT_WRITABLE */
1666 	/* LINUX_CDROM_LAST_WRITTEN */
1667 
1668 	default:
1669 		error = ENOIOCTL;
1670 		break;
1671 	}
1672 
1673 	fdrop(fp, td);
1674 	return (error);
1675 }
1676 
1677 static int
1678 linux_ioctl_vfat(struct thread *td, struct linux_ioctl_args *args)
1679 {
1680 
1681 	return (ENOTTY);
1682 }
1683 
1684 /*
1685  * Sound related ioctls
1686  */
1687 
1688 struct linux_old_mixer_info {
1689 	char	id[16];
1690 	char	name[32];
1691 };
1692 
1693 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
1694 
1695 #define	SETDIR(c)	(((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
1696 
1697 static int
1698 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
1699 {
1700 
1701 	switch (args->cmd & 0xffff) {
1702 	case LINUX_SOUND_MIXER_WRITE_VOLUME:
1703 		args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
1704 		return (sys_ioctl(td, (struct ioctl_args *)args));
1705 
1706 	case LINUX_SOUND_MIXER_WRITE_BASS:
1707 		args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
1708 		return (sys_ioctl(td, (struct ioctl_args *)args));
1709 
1710 	case LINUX_SOUND_MIXER_WRITE_TREBLE:
1711 		args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
1712 		return (sys_ioctl(td, (struct ioctl_args *)args));
1713 
1714 	case LINUX_SOUND_MIXER_WRITE_SYNTH:
1715 		args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
1716 		return (sys_ioctl(td, (struct ioctl_args *)args));
1717 
1718 	case LINUX_SOUND_MIXER_WRITE_PCM:
1719 		args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
1720 		return (sys_ioctl(td, (struct ioctl_args *)args));
1721 
1722 	case LINUX_SOUND_MIXER_WRITE_SPEAKER:
1723 		args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
1724 		return (sys_ioctl(td, (struct ioctl_args *)args));
1725 
1726 	case LINUX_SOUND_MIXER_WRITE_LINE:
1727 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
1728 		return (sys_ioctl(td, (struct ioctl_args *)args));
1729 
1730 	case LINUX_SOUND_MIXER_WRITE_MIC:
1731 		args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
1732 		return (sys_ioctl(td, (struct ioctl_args *)args));
1733 
1734 	case LINUX_SOUND_MIXER_WRITE_CD:
1735 		args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
1736 		return (sys_ioctl(td, (struct ioctl_args *)args));
1737 
1738 	case LINUX_SOUND_MIXER_WRITE_IMIX:
1739 		args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
1740 		return (sys_ioctl(td, (struct ioctl_args *)args));
1741 
1742 	case LINUX_SOUND_MIXER_WRITE_ALTPCM:
1743 		args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
1744 		return (sys_ioctl(td, (struct ioctl_args *)args));
1745 
1746 	case LINUX_SOUND_MIXER_WRITE_RECLEV:
1747 		args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
1748 		return (sys_ioctl(td, (struct ioctl_args *)args));
1749 
1750 	case LINUX_SOUND_MIXER_WRITE_IGAIN:
1751 		args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
1752 		return (sys_ioctl(td, (struct ioctl_args *)args));
1753 
1754 	case LINUX_SOUND_MIXER_WRITE_OGAIN:
1755 		args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
1756 		return (sys_ioctl(td, (struct ioctl_args *)args));
1757 
1758 	case LINUX_SOUND_MIXER_WRITE_LINE1:
1759 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
1760 		return (sys_ioctl(td, (struct ioctl_args *)args));
1761 
1762 	case LINUX_SOUND_MIXER_WRITE_LINE2:
1763 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
1764 		return (sys_ioctl(td, (struct ioctl_args *)args));
1765 
1766 	case LINUX_SOUND_MIXER_WRITE_LINE3:
1767 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
1768 		return (sys_ioctl(td, (struct ioctl_args *)args));
1769 
1770 	case LINUX_SOUND_MIXER_WRITE_MONITOR:
1771 		args->cmd = SETDIR(SOUND_MIXER_WRITE_MONITOR);
1772 		return (sys_ioctl(td, (struct ioctl_args *)args));
1773 
1774 	case LINUX_SOUND_MIXER_INFO: {
1775 		/* Key on encoded length */
1776 		switch ((args->cmd >> 16) & 0x1fff) {
1777 		case 0x005c: {	/* SOUND_MIXER_INFO */
1778 			args->cmd = SOUND_MIXER_INFO;
1779 			return (sys_ioctl(td, (struct ioctl_args *)args));
1780 		}
1781 		case 0x0030: {	/* SOUND_OLD_MIXER_INFO */
1782 			struct linux_old_mixer_info info;
1783 			bzero(&info, sizeof(info));
1784 			strncpy(info.id, "OSS", sizeof(info.id) - 1);
1785 			strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
1786 			copyout(&info, (void *)args->arg, sizeof(info));
1787 			return (0);
1788 		}
1789 		default:
1790 			return (ENOIOCTL);
1791 		}
1792 		break;
1793 	}
1794 
1795 	case LINUX_OSS_GETVERSION: {
1796 		int version = linux_get_oss_version(td);
1797 		return (copyout(&version, (void *)args->arg, sizeof(int)));
1798 	}
1799 
1800 	case LINUX_SOUND_MIXER_READ_STEREODEVS:
1801 		args->cmd = SOUND_MIXER_READ_STEREODEVS;
1802 		return (sys_ioctl(td, (struct ioctl_args *)args));
1803 
1804 	case LINUX_SOUND_MIXER_READ_CAPS:
1805 		args->cmd = SOUND_MIXER_READ_CAPS;
1806 		return (sys_ioctl(td, (struct ioctl_args *)args));
1807 
1808 	case LINUX_SOUND_MIXER_READ_RECMASK:
1809 		args->cmd = SOUND_MIXER_READ_RECMASK;
1810 		return (sys_ioctl(td, (struct ioctl_args *)args));
1811 
1812 	case LINUX_SOUND_MIXER_READ_DEVMASK:
1813 		args->cmd = SOUND_MIXER_READ_DEVMASK;
1814 		return (sys_ioctl(td, (struct ioctl_args *)args));
1815 
1816 	case LINUX_SOUND_MIXER_WRITE_RECSRC:
1817 		args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
1818 		return (sys_ioctl(td, (struct ioctl_args *)args));
1819 
1820 	case LINUX_SNDCTL_DSP_RESET:
1821 		args->cmd = SNDCTL_DSP_RESET;
1822 		return (sys_ioctl(td, (struct ioctl_args *)args));
1823 
1824 	case LINUX_SNDCTL_DSP_SYNC:
1825 		args->cmd = SNDCTL_DSP_SYNC;
1826 		return (sys_ioctl(td, (struct ioctl_args *)args));
1827 
1828 	case LINUX_SNDCTL_DSP_SPEED:
1829 		args->cmd = SNDCTL_DSP_SPEED;
1830 		return (sys_ioctl(td, (struct ioctl_args *)args));
1831 
1832 	case LINUX_SNDCTL_DSP_STEREO:
1833 		args->cmd = SNDCTL_DSP_STEREO;
1834 		return (sys_ioctl(td, (struct ioctl_args *)args));
1835 
1836 	case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
1837 		args->cmd = SNDCTL_DSP_GETBLKSIZE;
1838 		return (sys_ioctl(td, (struct ioctl_args *)args));
1839 
1840 	case LINUX_SNDCTL_DSP_SETFMT:
1841 		args->cmd = SNDCTL_DSP_SETFMT;
1842 		return (sys_ioctl(td, (struct ioctl_args *)args));
1843 
1844 	case LINUX_SOUND_PCM_WRITE_CHANNELS:
1845 		args->cmd = SOUND_PCM_WRITE_CHANNELS;
1846 		return (sys_ioctl(td, (struct ioctl_args *)args));
1847 
1848 	case LINUX_SOUND_PCM_WRITE_FILTER:
1849 		args->cmd = SOUND_PCM_WRITE_FILTER;
1850 		return (sys_ioctl(td, (struct ioctl_args *)args));
1851 
1852 	case LINUX_SNDCTL_DSP_POST:
1853 		args->cmd = SNDCTL_DSP_POST;
1854 		return (sys_ioctl(td, (struct ioctl_args *)args));
1855 
1856 	case LINUX_SNDCTL_DSP_SUBDIVIDE:
1857 		args->cmd = SNDCTL_DSP_SUBDIVIDE;
1858 		return (sys_ioctl(td, (struct ioctl_args *)args));
1859 
1860 	case LINUX_SNDCTL_DSP_SETFRAGMENT:
1861 		args->cmd = SNDCTL_DSP_SETFRAGMENT;
1862 		return (sys_ioctl(td, (struct ioctl_args *)args));
1863 
1864 	case LINUX_SNDCTL_DSP_GETFMTS:
1865 		args->cmd = SNDCTL_DSP_GETFMTS;
1866 		return (sys_ioctl(td, (struct ioctl_args *)args));
1867 
1868 	case LINUX_SNDCTL_DSP_GETOSPACE:
1869 		args->cmd = SNDCTL_DSP_GETOSPACE;
1870 		return (sys_ioctl(td, (struct ioctl_args *)args));
1871 
1872 	case LINUX_SNDCTL_DSP_GETISPACE:
1873 		args->cmd = SNDCTL_DSP_GETISPACE;
1874 		return (sys_ioctl(td, (struct ioctl_args *)args));
1875 
1876 	case LINUX_SNDCTL_DSP_NONBLOCK:
1877 		args->cmd = SNDCTL_DSP_NONBLOCK;
1878 		return (sys_ioctl(td, (struct ioctl_args *)args));
1879 
1880 	case LINUX_SNDCTL_DSP_GETCAPS:
1881 		args->cmd = SNDCTL_DSP_GETCAPS;
1882 		return (sys_ioctl(td, (struct ioctl_args *)args));
1883 
1884 	case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
1885 		args->cmd = SNDCTL_DSP_SETTRIGGER;
1886 		return (sys_ioctl(td, (struct ioctl_args *)args));
1887 
1888 	case LINUX_SNDCTL_DSP_GETIPTR:
1889 		args->cmd = SNDCTL_DSP_GETIPTR;
1890 		return (sys_ioctl(td, (struct ioctl_args *)args));
1891 
1892 	case LINUX_SNDCTL_DSP_GETOPTR:
1893 		args->cmd = SNDCTL_DSP_GETOPTR;
1894 		return (sys_ioctl(td, (struct ioctl_args *)args));
1895 
1896 	case LINUX_SNDCTL_DSP_SETDUPLEX:
1897 		args->cmd = SNDCTL_DSP_SETDUPLEX;
1898 		return (sys_ioctl(td, (struct ioctl_args *)args));
1899 
1900 	case LINUX_SNDCTL_DSP_GETODELAY:
1901 		args->cmd = SNDCTL_DSP_GETODELAY;
1902 		return (sys_ioctl(td, (struct ioctl_args *)args));
1903 
1904 	case LINUX_SNDCTL_SEQ_RESET:
1905 		args->cmd = SNDCTL_SEQ_RESET;
1906 		return (sys_ioctl(td, (struct ioctl_args *)args));
1907 
1908 	case LINUX_SNDCTL_SEQ_SYNC:
1909 		args->cmd = SNDCTL_SEQ_SYNC;
1910 		return (sys_ioctl(td, (struct ioctl_args *)args));
1911 
1912 	case LINUX_SNDCTL_SYNTH_INFO:
1913 		args->cmd = SNDCTL_SYNTH_INFO;
1914 		return (sys_ioctl(td, (struct ioctl_args *)args));
1915 
1916 	case LINUX_SNDCTL_SEQ_CTRLRATE:
1917 		args->cmd = SNDCTL_SEQ_CTRLRATE;
1918 		return (sys_ioctl(td, (struct ioctl_args *)args));
1919 
1920 	case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
1921 		args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
1922 		return (sys_ioctl(td, (struct ioctl_args *)args));
1923 
1924 	case LINUX_SNDCTL_SEQ_GETINCOUNT:
1925 		args->cmd = SNDCTL_SEQ_GETINCOUNT;
1926 		return (sys_ioctl(td, (struct ioctl_args *)args));
1927 
1928 	case LINUX_SNDCTL_SEQ_PERCMODE:
1929 		args->cmd = SNDCTL_SEQ_PERCMODE;
1930 		return (sys_ioctl(td, (struct ioctl_args *)args));
1931 
1932 	case LINUX_SNDCTL_FM_LOAD_INSTR:
1933 		args->cmd = SNDCTL_FM_LOAD_INSTR;
1934 		return (sys_ioctl(td, (struct ioctl_args *)args));
1935 
1936 	case LINUX_SNDCTL_SEQ_TESTMIDI:
1937 		args->cmd = SNDCTL_SEQ_TESTMIDI;
1938 		return (sys_ioctl(td, (struct ioctl_args *)args));
1939 
1940 	case LINUX_SNDCTL_SEQ_RESETSAMPLES:
1941 		args->cmd = SNDCTL_SEQ_RESETSAMPLES;
1942 		return (sys_ioctl(td, (struct ioctl_args *)args));
1943 
1944 	case LINUX_SNDCTL_SEQ_NRSYNTHS:
1945 		args->cmd = SNDCTL_SEQ_NRSYNTHS;
1946 		return (sys_ioctl(td, (struct ioctl_args *)args));
1947 
1948 	case LINUX_SNDCTL_SEQ_NRMIDIS:
1949 		args->cmd = SNDCTL_SEQ_NRMIDIS;
1950 		return (sys_ioctl(td, (struct ioctl_args *)args));
1951 
1952 	case LINUX_SNDCTL_MIDI_INFO:
1953 		args->cmd = SNDCTL_MIDI_INFO;
1954 		return (sys_ioctl(td, (struct ioctl_args *)args));
1955 
1956 	case LINUX_SNDCTL_SEQ_TRESHOLD:
1957 		args->cmd = SNDCTL_SEQ_TRESHOLD;
1958 		return (sys_ioctl(td, (struct ioctl_args *)args));
1959 
1960 	case LINUX_SNDCTL_SYNTH_MEMAVL:
1961 		args->cmd = SNDCTL_SYNTH_MEMAVL;
1962 		return (sys_ioctl(td, (struct ioctl_args *)args));
1963 	}
1964 
1965 	return (ENOIOCTL);
1966 }
1967 
1968 /*
1969  * Console related ioctls
1970  */
1971 
1972 static int
1973 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
1974 {
1975 	struct file *fp;
1976 	int error;
1977 
1978 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
1979 	if (error != 0)
1980 		return (error);
1981 	switch (args->cmd & 0xffff) {
1982 	case LINUX_KIOCSOUND:
1983 		args->cmd = KIOCSOUND;
1984 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1985 		break;
1986 
1987 	case LINUX_KDMKTONE:
1988 		args->cmd = KDMKTONE;
1989 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1990 		break;
1991 
1992 	case LINUX_KDGETLED:
1993 		args->cmd = KDGETLED;
1994 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1995 		break;
1996 
1997 	case LINUX_KDSETLED:
1998 		args->cmd = KDSETLED;
1999 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2000 		break;
2001 
2002 	case LINUX_KDSETMODE:
2003 		args->cmd = KDSETMODE;
2004 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2005 		break;
2006 
2007 	case LINUX_KDGETMODE:
2008 		args->cmd = KDGETMODE;
2009 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2010 		break;
2011 
2012 	case LINUX_KDGKBMODE:
2013 		args->cmd = KDGKBMODE;
2014 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2015 		break;
2016 
2017 	case LINUX_KDSKBMODE: {
2018 		int kbdmode;
2019 		switch (args->arg) {
2020 		case LINUX_KBD_RAW:
2021 			kbdmode = K_RAW;
2022 			break;
2023 		case LINUX_KBD_XLATE:
2024 			kbdmode = K_XLATE;
2025 			break;
2026 		case LINUX_KBD_MEDIUMRAW:
2027 			kbdmode = K_RAW;
2028 			break;
2029 		default:
2030 			fdrop(fp, td);
2031 			return (EINVAL);
2032 		}
2033 		error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
2034 		    td->td_ucred, td));
2035 		break;
2036 	}
2037 
2038 	case LINUX_VT_OPENQRY:
2039 		args->cmd = VT_OPENQRY;
2040 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2041 		break;
2042 
2043 	case LINUX_VT_GETMODE:
2044 		args->cmd = VT_GETMODE;
2045 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2046 		break;
2047 
2048 	case LINUX_VT_SETMODE: {
2049 		struct vt_mode mode;
2050 		if ((error = copyin((void *)args->arg, &mode, sizeof(mode))))
2051 			break;
2052 		if (LINUX_SIG_VALID(mode.relsig))
2053 			mode.relsig = linux_to_bsd_signal(mode.relsig);
2054 		else
2055 			mode.relsig = 0;
2056 		if (LINUX_SIG_VALID(mode.acqsig))
2057 			mode.acqsig = linux_to_bsd_signal(mode.acqsig);
2058 		else
2059 			mode.acqsig = 0;
2060 		/* XXX. Linux ignores frsig and set it to 0. */
2061 		mode.frsig = 0;
2062 		if ((error = copyout(&mode, (void *)args->arg, sizeof(mode))))
2063 			break;
2064 		args->cmd = VT_SETMODE;
2065 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2066 		break;
2067 	}
2068 
2069 	case LINUX_VT_GETSTATE:
2070 		args->cmd = VT_GETACTIVE;
2071 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2072 		break;
2073 
2074 	case LINUX_VT_RELDISP:
2075 		args->cmd = VT_RELDISP;
2076 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2077 		break;
2078 
2079 	case LINUX_VT_ACTIVATE:
2080 		args->cmd = VT_ACTIVATE;
2081 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2082 		break;
2083 
2084 	case LINUX_VT_WAITACTIVE:
2085 		args->cmd = VT_WAITACTIVE;
2086 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2087 		break;
2088 
2089 	default:
2090 		error = ENOIOCTL;
2091 		break;
2092 	}
2093 
2094 	fdrop(fp, td);
2095 	return (error);
2096 }
2097 
2098 /*
2099  * Implement the SIOCGIFNAME ioctl
2100  */
2101 
2102 static int
2103 linux_ioctl_ifname(struct thread *td, struct l_ifreq *uifr)
2104 {
2105 	struct l_ifreq ifr;
2106 	struct ifnet *ifp;
2107 	int error, ethno, index;
2108 
2109 	error = copyin(uifr, &ifr, sizeof(ifr));
2110 	if (error != 0)
2111 		return (error);
2112 
2113 	CURVNET_SET(TD_TO_VNET(curthread));
2114 	IFNET_RLOCK();
2115 	index = 1;	/* ifr.ifr_ifindex starts from 1 */
2116 	ethno = 0;
2117 	error = ENODEV;
2118 	CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
2119 		if (ifr.ifr_ifindex == index) {
2120 			if (IFP_IS_ETH(ifp))
2121 				snprintf(ifr.ifr_name, LINUX_IFNAMSIZ,
2122 				    "eth%d", ethno);
2123 			else
2124 				strlcpy(ifr.ifr_name, ifp->if_xname,
2125 				    LINUX_IFNAMSIZ);
2126 			error = 0;
2127 			break;
2128 		}
2129 		if (IFP_IS_ETH(ifp))
2130 			ethno++;
2131 		index++;
2132 	}
2133 	IFNET_RUNLOCK();
2134 	if (error == 0)
2135 		error = copyout(&ifr, uifr, sizeof(ifr));
2136 	CURVNET_RESTORE();
2137 
2138 	return (error);
2139 }
2140 
2141 /*
2142  * Implement the SIOCGIFCONF ioctl
2143  */
2144 
2145 static int
2146 linux_ifconf(struct thread *td, struct ifconf *uifc)
2147 {
2148 #ifdef COMPAT_LINUX32
2149 	struct l_ifconf ifc;
2150 #else
2151 	struct ifconf ifc;
2152 #endif
2153 	struct l_ifreq ifr;
2154 	struct ifnet *ifp;
2155 	struct ifaddr *ifa;
2156 	struct sbuf *sb;
2157 	int error, ethno, full = 0, valid_len, max_len;
2158 
2159 	error = copyin(uifc, &ifc, sizeof(ifc));
2160 	if (error != 0)
2161 		return (error);
2162 
2163 	max_len = maxphys - 1;
2164 
2165 	CURVNET_SET(TD_TO_VNET(td));
2166 	/* handle the 'request buffer size' case */
2167 	if ((l_uintptr_t)ifc.ifc_buf == PTROUT(NULL)) {
2168 		ifc.ifc_len = 0;
2169 		IFNET_RLOCK();
2170 		CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
2171 			CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2172 				struct sockaddr *sa = ifa->ifa_addr;
2173 				if (sa->sa_family == AF_INET)
2174 					ifc.ifc_len += sizeof(ifr);
2175 			}
2176 		}
2177 		IFNET_RUNLOCK();
2178 		error = copyout(&ifc, uifc, sizeof(ifc));
2179 		CURVNET_RESTORE();
2180 		return (error);
2181 	}
2182 
2183 	if (ifc.ifc_len <= 0) {
2184 		CURVNET_RESTORE();
2185 		return (EINVAL);
2186 	}
2187 
2188 again:
2189 	/* Keep track of eth interfaces */
2190 	ethno = 0;
2191 	if (ifc.ifc_len <= max_len) {
2192 		max_len = ifc.ifc_len;
2193 		full = 1;
2194 	}
2195 	sb = sbuf_new(NULL, NULL, max_len + 1, SBUF_FIXEDLEN);
2196 	max_len = 0;
2197 	valid_len = 0;
2198 
2199 	/* Return all AF_INET addresses of all interfaces */
2200 	IFNET_RLOCK();
2201 	CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
2202 		int addrs = 0;
2203 
2204 		bzero(&ifr, sizeof(ifr));
2205 		if (IFP_IS_ETH(ifp))
2206 			snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
2207 			    ethno++);
2208 		else
2209 			strlcpy(ifr.ifr_name, ifp->if_xname, LINUX_IFNAMSIZ);
2210 
2211 		/* Walk the address list */
2212 		CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2213 			struct sockaddr *sa = ifa->ifa_addr;
2214 
2215 			if (sa->sa_family == AF_INET) {
2216 				ifr.ifr_addr.sa_family = LINUX_AF_INET;
2217 				memcpy(ifr.ifr_addr.sa_data, sa->sa_data,
2218 				    sizeof(ifr.ifr_addr.sa_data));
2219 				sbuf_bcat(sb, &ifr, sizeof(ifr));
2220 				max_len += sizeof(ifr);
2221 				addrs++;
2222 			}
2223 
2224 			if (sbuf_error(sb) == 0)
2225 				valid_len = sbuf_len(sb);
2226 		}
2227 		if (addrs == 0) {
2228 			bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
2229 			sbuf_bcat(sb, &ifr, sizeof(ifr));
2230 			max_len += sizeof(ifr);
2231 
2232 			if (sbuf_error(sb) == 0)
2233 				valid_len = sbuf_len(sb);
2234 		}
2235 	}
2236 	IFNET_RUNLOCK();
2237 
2238 	if (valid_len != max_len && !full) {
2239 		sbuf_delete(sb);
2240 		goto again;
2241 	}
2242 
2243 	ifc.ifc_len = valid_len;
2244 	sbuf_finish(sb);
2245 	error = copyout(sbuf_data(sb), PTRIN(ifc.ifc_buf), ifc.ifc_len);
2246 	if (error == 0)
2247 		error = copyout(&ifc, uifc, sizeof(ifc));
2248 	sbuf_delete(sb);
2249 	CURVNET_RESTORE();
2250 
2251 	return (error);
2252 }
2253 
2254 static int
2255 linux_gifflags(struct thread *td, struct ifnet *ifp, struct l_ifreq *ifr)
2256 {
2257 	l_short flags;
2258 
2259 	linux_ifflags(ifp, &flags);
2260 
2261 	return (copyout(&flags, &ifr->ifr_flags, sizeof(flags)));
2262 }
2263 
2264 static int
2265 linux_gifhwaddr(struct ifnet *ifp, struct l_ifreq *ifr)
2266 {
2267 	struct l_sockaddr lsa;
2268 
2269 	if (linux_ifhwaddr(ifp, &lsa) != 0)
2270 		return (ENOENT);
2271 
2272 	return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
2273 }
2274 
2275  /*
2276 * If we fault in bsd_to_linux_ifreq() then we will fault when we call
2277 * the native ioctl().  Thus, we don't really need to check the return
2278 * value of this function.
2279 */
2280 static int
2281 bsd_to_linux_ifreq(struct ifreq *arg)
2282 {
2283 	struct ifreq ifr;
2284 	size_t ifr_len = sizeof(struct ifreq);
2285 	int error;
2286 
2287 	if ((error = copyin(arg, &ifr, ifr_len)))
2288 		return (error);
2289 
2290 	*(u_short *)&ifr.ifr_addr = ifr.ifr_addr.sa_family;
2291 
2292 	error = copyout(&ifr, arg, ifr_len);
2293 
2294 	return (error);
2295 }
2296 
2297 /*
2298  * Socket related ioctls
2299  */
2300 
2301 static int
2302 linux_ioctl_socket(struct thread *td, struct linux_ioctl_args *args)
2303 {
2304 	char lifname[LINUX_IFNAMSIZ], ifname[IFNAMSIZ];
2305 	struct ifnet *ifp;
2306 	struct file *fp;
2307 	int error, type;
2308 
2309 	ifp = NULL;
2310 	error = 0;
2311 
2312 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
2313 	if (error != 0)
2314 		return (error);
2315 	type = fp->f_type;
2316 	fdrop(fp, td);
2317 	if (type != DTYPE_SOCKET) {
2318 		/* not a socket - probably a tap / vmnet device */
2319 		switch (args->cmd) {
2320 		case LINUX_SIOCGIFADDR:
2321 		case LINUX_SIOCSIFADDR:
2322 		case LINUX_SIOCGIFFLAGS:
2323 			return (linux_ioctl_special(td, args));
2324 		default:
2325 			return (ENOIOCTL);
2326 		}
2327 	}
2328 
2329 	switch (args->cmd & 0xffff) {
2330 	case LINUX_FIOGETOWN:
2331 	case LINUX_FIOSETOWN:
2332 	case LINUX_SIOCADDMULTI:
2333 	case LINUX_SIOCATMARK:
2334 	case LINUX_SIOCDELMULTI:
2335 	case LINUX_SIOCGIFNAME:
2336 	case LINUX_SIOCGIFCONF:
2337 	case LINUX_SIOCGPGRP:
2338 	case LINUX_SIOCSPGRP:
2339 	case LINUX_SIOCGIFCOUNT:
2340 		/* these ioctls don't take an interface name */
2341 		break;
2342 
2343 	case LINUX_SIOCGIFFLAGS:
2344 	case LINUX_SIOCGIFADDR:
2345 	case LINUX_SIOCSIFADDR:
2346 	case LINUX_SIOCGIFDSTADDR:
2347 	case LINUX_SIOCGIFBRDADDR:
2348 	case LINUX_SIOCGIFNETMASK:
2349 	case LINUX_SIOCSIFNETMASK:
2350 	case LINUX_SIOCGIFMTU:
2351 	case LINUX_SIOCSIFMTU:
2352 	case LINUX_SIOCSIFNAME:
2353 	case LINUX_SIOCGIFHWADDR:
2354 	case LINUX_SIOCSIFHWADDR:
2355 	case LINUX_SIOCDEVPRIVATE:
2356 	case LINUX_SIOCDEVPRIVATE+1:
2357 	case LINUX_SIOCGIFINDEX:
2358 		/* copy in the interface name and translate it. */
2359 		error = copyin((void *)args->arg, lifname, LINUX_IFNAMSIZ);
2360 		if (error != 0)
2361 			return (error);
2362 		memset(ifname, 0, sizeof(ifname));
2363 		ifp = ifname_linux_to_bsd(td, lifname, ifname);
2364 		if (ifp == NULL)
2365 			return (EINVAL);
2366 		/*
2367 		 * We need to copy it back out in case we pass the
2368 		 * request on to our native ioctl(), which will expect
2369 		 * the ifreq to be in user space and have the correct
2370 		 * interface name.
2371 		 */
2372 		error = copyout(ifname, (void *)args->arg, IFNAMSIZ);
2373 		if (error != 0)
2374 			return (error);
2375 		break;
2376 
2377 	default:
2378 		return (ENOIOCTL);
2379 	}
2380 
2381 	switch (args->cmd & 0xffff) {
2382 	case LINUX_FIOSETOWN:
2383 		args->cmd = FIOSETOWN;
2384 		error = sys_ioctl(td, (struct ioctl_args *)args);
2385 		break;
2386 
2387 	case LINUX_SIOCSPGRP:
2388 		args->cmd = SIOCSPGRP;
2389 		error = sys_ioctl(td, (struct ioctl_args *)args);
2390 		break;
2391 
2392 	case LINUX_FIOGETOWN:
2393 		args->cmd = FIOGETOWN;
2394 		error = sys_ioctl(td, (struct ioctl_args *)args);
2395 		break;
2396 
2397 	case LINUX_SIOCGPGRP:
2398 		args->cmd = SIOCGPGRP;
2399 		error = sys_ioctl(td, (struct ioctl_args *)args);
2400 		break;
2401 
2402 	case LINUX_SIOCATMARK:
2403 		args->cmd = SIOCATMARK;
2404 		error = sys_ioctl(td, (struct ioctl_args *)args);
2405 		break;
2406 
2407 	/* LINUX_SIOCGSTAMP */
2408 
2409 	case LINUX_SIOCGIFNAME:
2410 		error = linux_ioctl_ifname(td, (struct l_ifreq *)args->arg);
2411 		break;
2412 
2413 	case LINUX_SIOCGIFCONF:
2414 		error = linux_ifconf(td, (struct ifconf *)args->arg);
2415 		break;
2416 
2417 	case LINUX_SIOCGIFFLAGS:
2418 		args->cmd = SIOCGIFFLAGS;
2419 		error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
2420 		break;
2421 
2422 	case LINUX_SIOCGIFADDR:
2423 		args->cmd = SIOCGIFADDR;
2424 		error = sys_ioctl(td, (struct ioctl_args *)args);
2425 		bsd_to_linux_ifreq((struct ifreq *)args->arg);
2426 		break;
2427 
2428 	case LINUX_SIOCSIFADDR:
2429 		/* XXX probably doesn't work, included for completeness */
2430 		args->cmd = SIOCSIFADDR;
2431 		error = sys_ioctl(td, (struct ioctl_args *)args);
2432 		break;
2433 
2434 	case LINUX_SIOCGIFDSTADDR:
2435 		args->cmd = SIOCGIFDSTADDR;
2436 		error = sys_ioctl(td, (struct ioctl_args *)args);
2437 		bsd_to_linux_ifreq((struct ifreq *)args->arg);
2438 		break;
2439 
2440 	case LINUX_SIOCGIFBRDADDR:
2441 		args->cmd = SIOCGIFBRDADDR;
2442 		error = sys_ioctl(td, (struct ioctl_args *)args);
2443 		bsd_to_linux_ifreq((struct ifreq *)args->arg);
2444 		break;
2445 
2446 	case LINUX_SIOCGIFNETMASK:
2447 		args->cmd = SIOCGIFNETMASK;
2448 		error = sys_ioctl(td, (struct ioctl_args *)args);
2449 		bsd_to_linux_ifreq((struct ifreq *)args->arg);
2450 		break;
2451 
2452 	case LINUX_SIOCSIFNETMASK:
2453 		error = ENOIOCTL;
2454 		break;
2455 
2456 	case LINUX_SIOCGIFMTU:
2457 		args->cmd = SIOCGIFMTU;
2458 		error = sys_ioctl(td, (struct ioctl_args *)args);
2459 		break;
2460 
2461 	case LINUX_SIOCSIFMTU:
2462 		args->cmd = SIOCSIFMTU;
2463 		error = sys_ioctl(td, (struct ioctl_args *)args);
2464 		break;
2465 
2466 	case LINUX_SIOCSIFNAME:
2467 		error = ENOIOCTL;
2468 		break;
2469 
2470 	case LINUX_SIOCGIFHWADDR:
2471 		error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
2472 		break;
2473 
2474 	case LINUX_SIOCSIFHWADDR:
2475 		error = ENOIOCTL;
2476 		break;
2477 
2478 	case LINUX_SIOCADDMULTI:
2479 		args->cmd = SIOCADDMULTI;
2480 		error = sys_ioctl(td, (struct ioctl_args *)args);
2481 		break;
2482 
2483 	case LINUX_SIOCDELMULTI:
2484 		args->cmd = SIOCDELMULTI;
2485 		error = sys_ioctl(td, (struct ioctl_args *)args);
2486 		break;
2487 
2488 	case LINUX_SIOCGIFINDEX:
2489 		args->cmd = SIOCGIFINDEX;
2490 		error = sys_ioctl(td, (struct ioctl_args *)args);
2491 		break;
2492 
2493 	case LINUX_SIOCGIFCOUNT:
2494 		error = 0;
2495 		break;
2496 
2497 	/*
2498 	 * XXX This is slightly bogus, but these ioctls are currently
2499 	 * XXX only used by the aironet (if_an) network driver.
2500 	 */
2501 	case LINUX_SIOCDEVPRIVATE:
2502 		args->cmd = SIOCGPRIVATE_0;
2503 		error = sys_ioctl(td, (struct ioctl_args *)args);
2504 		break;
2505 
2506 	case LINUX_SIOCDEVPRIVATE+1:
2507 		args->cmd = SIOCGPRIVATE_1;
2508 		error = sys_ioctl(td, (struct ioctl_args *)args);
2509 		break;
2510 	}
2511 
2512 	if (ifp != NULL)
2513 		/* restore the original interface name */
2514 		copyout(lifname, (void *)args->arg, LINUX_IFNAMSIZ);
2515 
2516 	return (error);
2517 }
2518 
2519 /*
2520  * Device private ioctl handler
2521  */
2522 static int
2523 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
2524 {
2525 	struct file *fp;
2526 	int error, type;
2527 
2528 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
2529 	if (error != 0)
2530 		return (error);
2531 	type = fp->f_type;
2532 	fdrop(fp, td);
2533 	if (type == DTYPE_SOCKET)
2534 		return (linux_ioctl_socket(td, args));
2535 	return (ENOIOCTL);
2536 }
2537 
2538 /*
2539  * DRM ioctl handler (sys/dev/drm)
2540  */
2541 static int
2542 linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
2543 {
2544 	args->cmd = SETDIR(args->cmd);
2545 	return (sys_ioctl(td, (struct ioctl_args *)args));
2546 }
2547 
2548 #ifdef COMPAT_LINUX32
2549 static int
2550 linux_ioctl_sg_io(struct thread *td, struct linux_ioctl_args *args)
2551 {
2552 	struct sg_io_hdr io;
2553 	struct sg_io_hdr32 io32;
2554 	struct file *fp;
2555 	int error;
2556 
2557 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
2558 	if (error != 0) {
2559 		printf("sg_linux_ioctl: fget returned %d\n", error);
2560 		return (error);
2561 	}
2562 
2563 	if ((error = copyin((void *)args->arg, &io32, sizeof(io32))) != 0)
2564 		goto out;
2565 
2566 	CP(io32, io, interface_id);
2567 	CP(io32, io, dxfer_direction);
2568 	CP(io32, io, cmd_len);
2569 	CP(io32, io, mx_sb_len);
2570 	CP(io32, io, iovec_count);
2571 	CP(io32, io, dxfer_len);
2572 	PTRIN_CP(io32, io, dxferp);
2573 	PTRIN_CP(io32, io, cmdp);
2574 	PTRIN_CP(io32, io, sbp);
2575 	CP(io32, io, timeout);
2576 	CP(io32, io, flags);
2577 	CP(io32, io, pack_id);
2578 	PTRIN_CP(io32, io, usr_ptr);
2579 	CP(io32, io, status);
2580 	CP(io32, io, masked_status);
2581 	CP(io32, io, msg_status);
2582 	CP(io32, io, sb_len_wr);
2583 	CP(io32, io, host_status);
2584 	CP(io32, io, driver_status);
2585 	CP(io32, io, resid);
2586 	CP(io32, io, duration);
2587 	CP(io32, io, info);
2588 
2589 	if ((error = fo_ioctl(fp, SG_IO, (caddr_t)&io, td->td_ucred, td)) != 0)
2590 		goto out;
2591 
2592 	CP(io, io32, interface_id);
2593 	CP(io, io32, dxfer_direction);
2594 	CP(io, io32, cmd_len);
2595 	CP(io, io32, mx_sb_len);
2596 	CP(io, io32, iovec_count);
2597 	CP(io, io32, dxfer_len);
2598 	PTROUT_CP(io, io32, dxferp);
2599 	PTROUT_CP(io, io32, cmdp);
2600 	PTROUT_CP(io, io32, sbp);
2601 	CP(io, io32, timeout);
2602 	CP(io, io32, flags);
2603 	CP(io, io32, pack_id);
2604 	PTROUT_CP(io, io32, usr_ptr);
2605 	CP(io, io32, status);
2606 	CP(io, io32, masked_status);
2607 	CP(io, io32, msg_status);
2608 	CP(io, io32, sb_len_wr);
2609 	CP(io, io32, host_status);
2610 	CP(io, io32, driver_status);
2611 	CP(io, io32, resid);
2612 	CP(io, io32, duration);
2613 	CP(io, io32, info);
2614 
2615 	error = copyout(&io32, (void *)args->arg, sizeof(io32));
2616 
2617 out:
2618 	fdrop(fp, td);
2619 	return (error);
2620 }
2621 #endif
2622 
2623 static int
2624 linux_ioctl_sg(struct thread *td, struct linux_ioctl_args *args)
2625 {
2626 
2627 	switch (args->cmd) {
2628 	case LINUX_SG_GET_VERSION_NUM:
2629 		args->cmd = SG_GET_VERSION_NUM;
2630 		break;
2631 	case LINUX_SG_SET_TIMEOUT:
2632 		args->cmd = SG_SET_TIMEOUT;
2633 		break;
2634 	case LINUX_SG_GET_TIMEOUT:
2635 		args->cmd = SG_GET_TIMEOUT;
2636 		break;
2637 	case LINUX_SG_IO:
2638 		args->cmd = SG_IO;
2639 #ifdef COMPAT_LINUX32
2640 		return (linux_ioctl_sg_io(td, args));
2641 #endif
2642 		break;
2643 	case LINUX_SG_GET_RESERVED_SIZE:
2644 		args->cmd = SG_GET_RESERVED_SIZE;
2645 		break;
2646 	case LINUX_SG_GET_SCSI_ID:
2647 		args->cmd = SG_GET_SCSI_ID;
2648 		break;
2649 	case LINUX_SG_GET_SG_TABLESIZE:
2650 		args->cmd = SG_GET_SG_TABLESIZE;
2651 		break;
2652 	default:
2653 		return (ENODEV);
2654 	}
2655 	return (sys_ioctl(td, (struct ioctl_args *)args));
2656 }
2657 
2658 /*
2659  * Video4Linux (V4L) ioctl handler
2660  */
2661 static int
2662 linux_to_bsd_v4l_tuner(struct l_video_tuner *lvt, struct video_tuner *vt)
2663 {
2664 	vt->tuner = lvt->tuner;
2665 	strlcpy(vt->name, lvt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
2666 	vt->rangelow = lvt->rangelow;	/* possible long size conversion */
2667 	vt->rangehigh = lvt->rangehigh;	/* possible long size conversion */
2668 	vt->flags = lvt->flags;
2669 	vt->mode = lvt->mode;
2670 	vt->signal = lvt->signal;
2671 	return (0);
2672 }
2673 
2674 static int
2675 bsd_to_linux_v4l_tuner(struct video_tuner *vt, struct l_video_tuner *lvt)
2676 {
2677 	lvt->tuner = vt->tuner;
2678 	strlcpy(lvt->name, vt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
2679 	lvt->rangelow = vt->rangelow;	/* possible long size conversion */
2680 	lvt->rangehigh = vt->rangehigh;	/* possible long size conversion */
2681 	lvt->flags = vt->flags;
2682 	lvt->mode = vt->mode;
2683 	lvt->signal = vt->signal;
2684 	return (0);
2685 }
2686 
2687 #ifdef COMPAT_LINUX_V4L_CLIPLIST
2688 static int
2689 linux_to_bsd_v4l_clip(struct l_video_clip *lvc, struct video_clip *vc)
2690 {
2691 	vc->x = lvc->x;
2692 	vc->y = lvc->y;
2693 	vc->width = lvc->width;
2694 	vc->height = lvc->height;
2695 	vc->next = PTRIN(lvc->next);	/* possible pointer size conversion */
2696 	return (0);
2697 }
2698 #endif
2699 
2700 static int
2701 linux_to_bsd_v4l_window(struct l_video_window *lvw, struct video_window *vw)
2702 {
2703 	vw->x = lvw->x;
2704 	vw->y = lvw->y;
2705 	vw->width = lvw->width;
2706 	vw->height = lvw->height;
2707 	vw->chromakey = lvw->chromakey;
2708 	vw->flags = lvw->flags;
2709 	vw->clips = PTRIN(lvw->clips);	/* possible pointer size conversion */
2710 	vw->clipcount = lvw->clipcount;
2711 	return (0);
2712 }
2713 
2714 static int
2715 bsd_to_linux_v4l_window(struct video_window *vw, struct l_video_window *lvw)
2716 {
2717 	memset(lvw, 0, sizeof(*lvw));
2718 
2719 	lvw->x = vw->x;
2720 	lvw->y = vw->y;
2721 	lvw->width = vw->width;
2722 	lvw->height = vw->height;
2723 	lvw->chromakey = vw->chromakey;
2724 	lvw->flags = vw->flags;
2725 	lvw->clips = PTROUT(vw->clips);	/* possible pointer size conversion */
2726 	lvw->clipcount = vw->clipcount;
2727 	return (0);
2728 }
2729 
2730 static int
2731 linux_to_bsd_v4l_buffer(struct l_video_buffer *lvb, struct video_buffer *vb)
2732 {
2733 	vb->base = PTRIN(lvb->base);	/* possible pointer size conversion */
2734 	vb->height = lvb->height;
2735 	vb->width = lvb->width;
2736 	vb->depth = lvb->depth;
2737 	vb->bytesperline = lvb->bytesperline;
2738 	return (0);
2739 }
2740 
2741 static int
2742 bsd_to_linux_v4l_buffer(struct video_buffer *vb, struct l_video_buffer *lvb)
2743 {
2744 	lvb->base = PTROUT(vb->base);	/* possible pointer size conversion */
2745 	lvb->height = vb->height;
2746 	lvb->width = vb->width;
2747 	lvb->depth = vb->depth;
2748 	lvb->bytesperline = vb->bytesperline;
2749 	return (0);
2750 }
2751 
2752 static int
2753 linux_to_bsd_v4l_code(struct l_video_code *lvc, struct video_code *vc)
2754 {
2755 	strlcpy(vc->loadwhat, lvc->loadwhat, LINUX_VIDEO_CODE_LOADWHAT_SIZE);
2756 	vc->datasize = lvc->datasize;
2757 	vc->data = PTRIN(lvc->data);	/* possible pointer size conversion */
2758 	return (0);
2759 }
2760 
2761 #ifdef COMPAT_LINUX_V4L_CLIPLIST
2762 static int
2763 linux_v4l_clip_copy(void *lvc, struct video_clip **ppvc)
2764 {
2765 	int error;
2766 	struct video_clip vclip;
2767 	struct l_video_clip l_vclip;
2768 
2769 	error = copyin(lvc, &l_vclip, sizeof(l_vclip));
2770 	if (error) return (error);
2771 	linux_to_bsd_v4l_clip(&l_vclip, &vclip);
2772 	/* XXX: If there can be no concurrency: s/M_NOWAIT/M_WAITOK/ */
2773 	if ((*ppvc = malloc(sizeof(**ppvc), M_LINUX, M_NOWAIT)) == NULL)
2774 		return (ENOMEM);    /* XXX: Linux has no ENOMEM here. */
2775 	memcpy(*ppvc, &vclip, sizeof(vclip));
2776 	(*ppvc)->next = NULL;
2777 	return (0);
2778 }
2779 
2780 static int
2781 linux_v4l_cliplist_free(struct video_window *vw)
2782 {
2783 	struct video_clip **ppvc;
2784 	struct video_clip **ppvc_next;
2785 
2786 	for (ppvc = &(vw->clips); *ppvc != NULL; ppvc = ppvc_next) {
2787 		ppvc_next = &((*ppvc)->next);
2788 		free(*ppvc, M_LINUX);
2789 	}
2790 	vw->clips = NULL;
2791 
2792 	return (0);
2793 }
2794 
2795 static int
2796 linux_v4l_cliplist_copy(struct l_video_window *lvw, struct video_window *vw)
2797 {
2798 	int error;
2799 	int clipcount;
2800 	void *plvc;
2801 	struct video_clip **ppvc;
2802 
2803 	/*
2804 	 * XXX: The cliplist is used to pass in a list of clipping
2805 	 *	rectangles or, if clipcount == VIDEO_CLIP_BITMAP, a
2806 	 *	clipping bitmap.  Some Linux apps, however, appear to
2807 	 *	leave cliplist and clips uninitialized.  In any case,
2808 	 *	the cliplist is not used by pwc(4), at the time of
2809 	 *	writing, FreeBSD's only V4L driver.  When a driver
2810 	 *	that uses the cliplist is developed, this code may
2811 	 *	need re-examiniation.
2812 	 */
2813 	error = 0;
2814 	clipcount = vw->clipcount;
2815 	if (clipcount == VIDEO_CLIP_BITMAP) {
2816 		/*
2817 		 * In this case, the pointer (clips) is overloaded
2818 		 * to be a "void *" to a bitmap, therefore there
2819 		 * is no struct video_clip to copy now.
2820 		 */
2821 	} else if (clipcount > 0 && clipcount <= 16384) {
2822 		/*
2823 		 * Clips points to list of clip rectangles, so
2824 		 * copy the list.
2825 		 *
2826 		 * XXX: Upper limit of 16384 was used here to try to
2827 		 *	avoid cases when clipcount and clips pointer
2828 		 *	are uninitialized and therefore have high random
2829 		 *	values, as is the case in the Linux Skype
2830 		 *	application.  The value 16384 was chosen as that
2831 		 *	is what is used in the Linux stradis(4) MPEG
2832 		 *	decoder driver, the only place we found an
2833 		 *	example of cliplist use.
2834 		 */
2835 		plvc = PTRIN(lvw->clips);
2836 		vw->clips = NULL;
2837 		ppvc = &(vw->clips);
2838 		while (clipcount-- > 0) {
2839 			if (plvc == NULL) {
2840 				error = EFAULT;
2841 				break;
2842 			} else {
2843 				error = linux_v4l_clip_copy(plvc, ppvc);
2844 				if (error) {
2845 					linux_v4l_cliplist_free(vw);
2846 					break;
2847 				}
2848 			}
2849 			ppvc = &((*ppvc)->next);
2850 			plvc = PTRIN(((struct l_video_clip *) plvc)->next);
2851 		}
2852 	} else {
2853 		/*
2854 		 * clipcount == 0 or negative (but not VIDEO_CLIP_BITMAP)
2855 		 * Force cliplist to null.
2856 		 */
2857 		vw->clipcount = 0;
2858 		vw->clips = NULL;
2859 	}
2860 	return (error);
2861 }
2862 #endif
2863 
2864 static int
2865 linux_ioctl_v4l(struct thread *td, struct linux_ioctl_args *args)
2866 {
2867 	struct file *fp;
2868 	int error;
2869 	struct video_tuner vtun;
2870 	struct video_window vwin;
2871 	struct video_buffer vbuf;
2872 	struct video_code vcode;
2873 	struct l_video_tuner l_vtun;
2874 	struct l_video_window l_vwin;
2875 	struct l_video_buffer l_vbuf;
2876 	struct l_video_code l_vcode;
2877 
2878 	switch (args->cmd & 0xffff) {
2879 	case LINUX_VIDIOCGCAP:		args->cmd = VIDIOCGCAP; break;
2880 	case LINUX_VIDIOCGCHAN:		args->cmd = VIDIOCGCHAN; break;
2881 	case LINUX_VIDIOCSCHAN:		args->cmd = VIDIOCSCHAN; break;
2882 
2883 	case LINUX_VIDIOCGTUNER:
2884 		error = fget(td, args->fd,
2885 		    &cap_ioctl_rights, &fp);
2886 		if (error != 0)
2887 			return (error);
2888 		error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
2889 		if (error) {
2890 			fdrop(fp, td);
2891 			return (error);
2892 		}
2893 		linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
2894 		error = fo_ioctl(fp, VIDIOCGTUNER, &vtun, td->td_ucred, td);
2895 		if (!error) {
2896 			bsd_to_linux_v4l_tuner(&vtun, &l_vtun);
2897 			error = copyout(&l_vtun, (void *) args->arg,
2898 			    sizeof(l_vtun));
2899 		}
2900 		fdrop(fp, td);
2901 		return (error);
2902 
2903 	case LINUX_VIDIOCSTUNER:
2904 		error = fget(td, args->fd,
2905 		    &cap_ioctl_rights, &fp);
2906 		if (error != 0)
2907 			return (error);
2908 		error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
2909 		if (error) {
2910 			fdrop(fp, td);
2911 			return (error);
2912 		}
2913 		linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
2914 		error = fo_ioctl(fp, VIDIOCSTUNER, &vtun, td->td_ucred, td);
2915 		fdrop(fp, td);
2916 		return (error);
2917 
2918 	case LINUX_VIDIOCGPICT:		args->cmd = VIDIOCGPICT; break;
2919 	case LINUX_VIDIOCSPICT:		args->cmd = VIDIOCSPICT; break;
2920 	case LINUX_VIDIOCCAPTURE:	args->cmd = VIDIOCCAPTURE; break;
2921 
2922 	case LINUX_VIDIOCGWIN:
2923 		error = fget(td, args->fd,
2924 		    &cap_ioctl_rights, &fp);
2925 		if (error != 0)
2926 			return (error);
2927 		error = fo_ioctl(fp, VIDIOCGWIN, &vwin, td->td_ucred, td);
2928 		if (!error) {
2929 			bsd_to_linux_v4l_window(&vwin, &l_vwin);
2930 			error = copyout(&l_vwin, (void *) args->arg,
2931 			    sizeof(l_vwin));
2932 		}
2933 		fdrop(fp, td);
2934 		return (error);
2935 
2936 	case LINUX_VIDIOCSWIN:
2937 		error = fget(td, args->fd,
2938 		    &cap_ioctl_rights, &fp);
2939 		if (error != 0)
2940 			return (error);
2941 		error = copyin((void *) args->arg, &l_vwin, sizeof(l_vwin));
2942 		if (error) {
2943 			fdrop(fp, td);
2944 			return (error);
2945 		}
2946 		linux_to_bsd_v4l_window(&l_vwin, &vwin);
2947 #ifdef COMPAT_LINUX_V4L_CLIPLIST
2948 		error = linux_v4l_cliplist_copy(&l_vwin, &vwin);
2949 		if (error) {
2950 			fdrop(fp, td);
2951 			return (error);
2952 		}
2953 #endif
2954 		error = fo_ioctl(fp, VIDIOCSWIN, &vwin, td->td_ucred, td);
2955 		fdrop(fp, td);
2956 #ifdef COMPAT_LINUX_V4L_CLIPLIST
2957 		linux_v4l_cliplist_free(&vwin);
2958 #endif
2959 		return (error);
2960 
2961 	case LINUX_VIDIOCGFBUF:
2962 		error = fget(td, args->fd,
2963 		    &cap_ioctl_rights, &fp);
2964 		if (error != 0)
2965 			return (error);
2966 		error = fo_ioctl(fp, VIDIOCGFBUF, &vbuf, td->td_ucred, td);
2967 		if (!error) {
2968 			bsd_to_linux_v4l_buffer(&vbuf, &l_vbuf);
2969 			error = copyout(&l_vbuf, (void *) args->arg,
2970 			    sizeof(l_vbuf));
2971 		}
2972 		fdrop(fp, td);
2973 		return (error);
2974 
2975 	case LINUX_VIDIOCSFBUF:
2976 		error = fget(td, args->fd,
2977 		    &cap_ioctl_rights, &fp);
2978 		if (error != 0)
2979 			return (error);
2980 		error = copyin((void *) args->arg, &l_vbuf, sizeof(l_vbuf));
2981 		if (error) {
2982 			fdrop(fp, td);
2983 			return (error);
2984 		}
2985 		linux_to_bsd_v4l_buffer(&l_vbuf, &vbuf);
2986 		error = fo_ioctl(fp, VIDIOCSFBUF, &vbuf, td->td_ucred, td);
2987 		fdrop(fp, td);
2988 		return (error);
2989 
2990 	case LINUX_VIDIOCKEY:		args->cmd = VIDIOCKEY; break;
2991 	case LINUX_VIDIOCGFREQ:		args->cmd = VIDIOCGFREQ; break;
2992 	case LINUX_VIDIOCSFREQ:		args->cmd = VIDIOCSFREQ; break;
2993 	case LINUX_VIDIOCGAUDIO:	args->cmd = VIDIOCGAUDIO; break;
2994 	case LINUX_VIDIOCSAUDIO:	args->cmd = VIDIOCSAUDIO; break;
2995 	case LINUX_VIDIOCSYNC:		args->cmd = VIDIOCSYNC; break;
2996 	case LINUX_VIDIOCMCAPTURE:	args->cmd = VIDIOCMCAPTURE; break;
2997 	case LINUX_VIDIOCGMBUF:		args->cmd = VIDIOCGMBUF; break;
2998 	case LINUX_VIDIOCGUNIT:		args->cmd = VIDIOCGUNIT; break;
2999 	case LINUX_VIDIOCGCAPTURE:	args->cmd = VIDIOCGCAPTURE; break;
3000 	case LINUX_VIDIOCSCAPTURE:	args->cmd = VIDIOCSCAPTURE; break;
3001 	case LINUX_VIDIOCSPLAYMODE:	args->cmd = VIDIOCSPLAYMODE; break;
3002 	case LINUX_VIDIOCSWRITEMODE:	args->cmd = VIDIOCSWRITEMODE; break;
3003 	case LINUX_VIDIOCGPLAYINFO:	args->cmd = VIDIOCGPLAYINFO; break;
3004 
3005 	case LINUX_VIDIOCSMICROCODE:
3006 		error = fget(td, args->fd,
3007 		    &cap_ioctl_rights, &fp);
3008 		if (error != 0)
3009 			return (error);
3010 		error = copyin((void *) args->arg, &l_vcode, sizeof(l_vcode));
3011 		if (error) {
3012 			fdrop(fp, td);
3013 			return (error);
3014 		}
3015 		linux_to_bsd_v4l_code(&l_vcode, &vcode);
3016 		error = fo_ioctl(fp, VIDIOCSMICROCODE, &vcode, td->td_ucred, td);
3017 		fdrop(fp, td);
3018 		return (error);
3019 
3020 	case LINUX_VIDIOCGVBIFMT:	args->cmd = VIDIOCGVBIFMT; break;
3021 	case LINUX_VIDIOCSVBIFMT:	args->cmd = VIDIOCSVBIFMT; break;
3022 	default:			return (ENOIOCTL);
3023 	}
3024 
3025 	error = sys_ioctl(td, (struct ioctl_args *)args);
3026 	return (error);
3027 }
3028 
3029 /*
3030  * Special ioctl handler
3031  */
3032 static int
3033 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
3034 {
3035 	int error;
3036 
3037 	switch (args->cmd) {
3038 	case LINUX_SIOCGIFADDR:
3039 		args->cmd = SIOCGIFADDR;
3040 		error = sys_ioctl(td, (struct ioctl_args *)args);
3041 		break;
3042 	case LINUX_SIOCSIFADDR:
3043 		args->cmd = SIOCSIFADDR;
3044 		error = sys_ioctl(td, (struct ioctl_args *)args);
3045 		break;
3046 	case LINUX_SIOCGIFFLAGS:
3047 		args->cmd = SIOCGIFFLAGS;
3048 		error = sys_ioctl(td, (struct ioctl_args *)args);
3049 		break;
3050 	default:
3051 		error = ENOIOCTL;
3052 	}
3053 
3054 	return (error);
3055 }
3056 
3057 static int
3058 linux_to_bsd_v4l2_standard(struct l_v4l2_standard *lvstd, struct v4l2_standard *vstd)
3059 {
3060 	vstd->index = lvstd->index;
3061 	vstd->id = lvstd->id;
3062 	CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
3063 	memcpy(vstd->name, lvstd->name, sizeof(vstd->name));
3064 	vstd->frameperiod = lvstd->frameperiod;
3065 	vstd->framelines = lvstd->framelines;
3066 	CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
3067 	memcpy(vstd->reserved, lvstd->reserved, sizeof(vstd->reserved));
3068 	return (0);
3069 }
3070 
3071 static int
3072 bsd_to_linux_v4l2_standard(struct v4l2_standard *vstd, struct l_v4l2_standard *lvstd)
3073 {
3074 	lvstd->index = vstd->index;
3075 	lvstd->id = vstd->id;
3076 	CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
3077 	memcpy(lvstd->name, vstd->name, sizeof(lvstd->name));
3078 	lvstd->frameperiod = vstd->frameperiod;
3079 	lvstd->framelines = vstd->framelines;
3080 	CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
3081 	memcpy(lvstd->reserved, vstd->reserved, sizeof(lvstd->reserved));
3082 	return (0);
3083 }
3084 
3085 static int
3086 linux_to_bsd_v4l2_buffer(struct l_v4l2_buffer *lvb, struct v4l2_buffer *vb)
3087 {
3088 	vb->index = lvb->index;
3089 	vb->type = lvb->type;
3090 	vb->bytesused = lvb->bytesused;
3091 	vb->flags = lvb->flags;
3092 	vb->field = lvb->field;
3093 	vb->timestamp.tv_sec = lvb->timestamp.tv_sec;
3094 	vb->timestamp.tv_usec = lvb->timestamp.tv_usec;
3095 	memcpy(&vb->timecode, &lvb->timecode, sizeof (lvb->timecode));
3096 	vb->sequence = lvb->sequence;
3097 	vb->memory = lvb->memory;
3098 	if (lvb->memory == V4L2_MEMORY_USERPTR)
3099 		/* possible pointer size conversion */
3100 		vb->m.userptr = (unsigned long)PTRIN(lvb->m.userptr);
3101 	else
3102 		vb->m.offset = lvb->m.offset;
3103 	vb->length = lvb->length;
3104 	vb->input = lvb->input;
3105 	vb->reserved = lvb->reserved;
3106 	return (0);
3107 }
3108 
3109 static int
3110 bsd_to_linux_v4l2_buffer(struct v4l2_buffer *vb, struct l_v4l2_buffer *lvb)
3111 {
3112 	lvb->index = vb->index;
3113 	lvb->type = vb->type;
3114 	lvb->bytesused = vb->bytesused;
3115 	lvb->flags = vb->flags;
3116 	lvb->field = vb->field;
3117 	lvb->timestamp.tv_sec = vb->timestamp.tv_sec;
3118 	lvb->timestamp.tv_usec = vb->timestamp.tv_usec;
3119 	memcpy(&lvb->timecode, &vb->timecode, sizeof (vb->timecode));
3120 	lvb->sequence = vb->sequence;
3121 	lvb->memory = vb->memory;
3122 	if (vb->memory == V4L2_MEMORY_USERPTR)
3123 		/* possible pointer size conversion */
3124 		lvb->m.userptr = PTROUT(vb->m.userptr);
3125 	else
3126 		lvb->m.offset = vb->m.offset;
3127 	lvb->length = vb->length;
3128 	lvb->input = vb->input;
3129 	lvb->reserved = vb->reserved;
3130 	return (0);
3131 }
3132 
3133 static int
3134 linux_to_bsd_v4l2_format(struct l_v4l2_format *lvf, struct v4l2_format *vf)
3135 {
3136 	vf->type = lvf->type;
3137 	if (lvf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
3138 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
3139 	    || lvf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
3140 #endif
3141 	    )
3142 		/*
3143 		 * XXX TODO - needs 32 -> 64 bit conversion:
3144 		 * (unused by webcams?)
3145 		 */
3146 		return (EINVAL);
3147 	memcpy(&vf->fmt, &lvf->fmt, sizeof(vf->fmt));
3148 	return (0);
3149 }
3150 
3151 static int
3152 bsd_to_linux_v4l2_format(struct v4l2_format *vf, struct l_v4l2_format *lvf)
3153 {
3154 	lvf->type = vf->type;
3155 	if (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
3156 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
3157 	    || vf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
3158 #endif
3159 	    )
3160 		/*
3161 		 * XXX TODO - needs 32 -> 64 bit conversion:
3162 		 * (unused by webcams?)
3163 		 */
3164 		return (EINVAL);
3165 	memcpy(&lvf->fmt, &vf->fmt, sizeof(vf->fmt));
3166 	return (0);
3167 }
3168 static int
3169 linux_ioctl_v4l2(struct thread *td, struct linux_ioctl_args *args)
3170 {
3171 	struct file *fp;
3172 	int error;
3173 	struct v4l2_format vformat;
3174 	struct l_v4l2_format l_vformat;
3175 	struct v4l2_standard vstd;
3176 	struct l_v4l2_standard l_vstd;
3177 	struct l_v4l2_buffer l_vbuf;
3178 	struct v4l2_buffer vbuf;
3179 	struct v4l2_input vinp;
3180 
3181 	switch (args->cmd & 0xffff) {
3182 	case LINUX_VIDIOC_RESERVED:
3183 	case LINUX_VIDIOC_LOG_STATUS:
3184 		if ((args->cmd & IOC_DIRMASK) != LINUX_IOC_VOID)
3185 			return (ENOIOCTL);
3186 		args->cmd = (args->cmd & 0xffff) | IOC_VOID;
3187 		break;
3188 
3189 	case LINUX_VIDIOC_OVERLAY:
3190 	case LINUX_VIDIOC_STREAMON:
3191 	case LINUX_VIDIOC_STREAMOFF:
3192 	case LINUX_VIDIOC_S_STD:
3193 	case LINUX_VIDIOC_S_TUNER:
3194 	case LINUX_VIDIOC_S_AUDIO:
3195 	case LINUX_VIDIOC_S_AUDOUT:
3196 	case LINUX_VIDIOC_S_MODULATOR:
3197 	case LINUX_VIDIOC_S_FREQUENCY:
3198 	case LINUX_VIDIOC_S_CROP:
3199 	case LINUX_VIDIOC_S_JPEGCOMP:
3200 	case LINUX_VIDIOC_S_PRIORITY:
3201 	case LINUX_VIDIOC_DBG_S_REGISTER:
3202 	case LINUX_VIDIOC_S_HW_FREQ_SEEK:
3203 	case LINUX_VIDIOC_SUBSCRIBE_EVENT:
3204 	case LINUX_VIDIOC_UNSUBSCRIBE_EVENT:
3205 		args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_IN;
3206 		break;
3207 
3208 	case LINUX_VIDIOC_QUERYCAP:
3209 	case LINUX_VIDIOC_G_STD:
3210 	case LINUX_VIDIOC_G_AUDIO:
3211 	case LINUX_VIDIOC_G_INPUT:
3212 	case LINUX_VIDIOC_G_OUTPUT:
3213 	case LINUX_VIDIOC_G_AUDOUT:
3214 	case LINUX_VIDIOC_G_JPEGCOMP:
3215 	case LINUX_VIDIOC_QUERYSTD:
3216 	case LINUX_VIDIOC_G_PRIORITY:
3217 	case LINUX_VIDIOC_QUERY_DV_PRESET:
3218 		args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_OUT;
3219 		break;
3220 
3221 	case LINUX_VIDIOC_ENUM_FMT:
3222 	case LINUX_VIDIOC_REQBUFS:
3223 	case LINUX_VIDIOC_G_PARM:
3224 	case LINUX_VIDIOC_S_PARM:
3225 	case LINUX_VIDIOC_G_CTRL:
3226 	case LINUX_VIDIOC_S_CTRL:
3227 	case LINUX_VIDIOC_G_TUNER:
3228 	case LINUX_VIDIOC_QUERYCTRL:
3229 	case LINUX_VIDIOC_QUERYMENU:
3230 	case LINUX_VIDIOC_S_INPUT:
3231 	case LINUX_VIDIOC_S_OUTPUT:
3232 	case LINUX_VIDIOC_ENUMOUTPUT:
3233 	case LINUX_VIDIOC_G_MODULATOR:
3234 	case LINUX_VIDIOC_G_FREQUENCY:
3235 	case LINUX_VIDIOC_CROPCAP:
3236 	case LINUX_VIDIOC_G_CROP:
3237 	case LINUX_VIDIOC_ENUMAUDIO:
3238 	case LINUX_VIDIOC_ENUMAUDOUT:
3239 	case LINUX_VIDIOC_G_SLICED_VBI_CAP:
3240 #ifdef VIDIOC_ENUM_FRAMESIZES
3241 	case LINUX_VIDIOC_ENUM_FRAMESIZES:
3242 	case LINUX_VIDIOC_ENUM_FRAMEINTERVALS:
3243 	case LINUX_VIDIOC_ENCODER_CMD:
3244 	case LINUX_VIDIOC_TRY_ENCODER_CMD:
3245 #endif
3246 	case LINUX_VIDIOC_DBG_G_REGISTER:
3247 	case LINUX_VIDIOC_DBG_G_CHIP_IDENT:
3248 	case LINUX_VIDIOC_ENUM_DV_PRESETS:
3249 	case LINUX_VIDIOC_S_DV_PRESET:
3250 	case LINUX_VIDIOC_G_DV_PRESET:
3251 	case LINUX_VIDIOC_S_DV_TIMINGS:
3252 	case LINUX_VIDIOC_G_DV_TIMINGS:
3253 		args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
3254 		break;
3255 
3256 	case LINUX_VIDIOC_G_FMT:
3257 	case LINUX_VIDIOC_S_FMT:
3258 	case LINUX_VIDIOC_TRY_FMT:
3259 		error = copyin((void *)args->arg, &l_vformat, sizeof(l_vformat));
3260 		if (error)
3261 			return (error);
3262 		error = fget(td, args->fd,
3263 		    &cap_ioctl_rights, &fp);
3264 		if (error)
3265 			return (error);
3266 		if (linux_to_bsd_v4l2_format(&l_vformat, &vformat) != 0)
3267 			error = EINVAL;
3268 		else if ((args->cmd & 0xffff) == LINUX_VIDIOC_G_FMT)
3269 			error = fo_ioctl(fp, VIDIOC_G_FMT, &vformat,
3270 			    td->td_ucred, td);
3271 		else if ((args->cmd & 0xffff) == LINUX_VIDIOC_S_FMT)
3272 			error = fo_ioctl(fp, VIDIOC_S_FMT, &vformat,
3273 			    td->td_ucred, td);
3274 		else
3275 			error = fo_ioctl(fp, VIDIOC_TRY_FMT, &vformat,
3276 			    td->td_ucred, td);
3277 		bsd_to_linux_v4l2_format(&vformat, &l_vformat);
3278 		copyout(&l_vformat, (void *)args->arg, sizeof(l_vformat));
3279 		fdrop(fp, td);
3280 		return (error);
3281 
3282 	case LINUX_VIDIOC_ENUMSTD:
3283 		error = copyin((void *)args->arg, &l_vstd, sizeof(l_vstd));
3284 		if (error)
3285 			return (error);
3286 		linux_to_bsd_v4l2_standard(&l_vstd, &vstd);
3287 		error = fget(td, args->fd,
3288 		    &cap_ioctl_rights, &fp);
3289 		if (error)
3290 			return (error);
3291 		error = fo_ioctl(fp, VIDIOC_ENUMSTD, (caddr_t)&vstd,
3292 		    td->td_ucred, td);
3293 		if (error) {
3294 			fdrop(fp, td);
3295 			return (error);
3296 		}
3297 		bsd_to_linux_v4l2_standard(&vstd, &l_vstd);
3298 		error = copyout(&l_vstd, (void *)args->arg, sizeof(l_vstd));
3299 		fdrop(fp, td);
3300 		return (error);
3301 
3302 	case LINUX_VIDIOC_ENUMINPUT:
3303 		/*
3304 		 * The Linux struct l_v4l2_input differs only in size,
3305 		 * it has no padding at the end.
3306 		 */
3307 		error = copyin((void *)args->arg, &vinp,
3308 				sizeof(struct l_v4l2_input));
3309 		if (error != 0)
3310 			return (error);
3311 		error = fget(td, args->fd,
3312 		    &cap_ioctl_rights, &fp);
3313 		if (error != 0)
3314 			return (error);
3315 		error = fo_ioctl(fp, VIDIOC_ENUMINPUT, (caddr_t)&vinp,
3316 		    td->td_ucred, td);
3317 		if (error) {
3318 			fdrop(fp, td);
3319 			return (error);
3320 		}
3321 		error = copyout(&vinp, (void *)args->arg,
3322 				sizeof(struct l_v4l2_input));
3323 		fdrop(fp, td);
3324 		return (error);
3325 
3326 	case LINUX_VIDIOC_QUERYBUF:
3327 	case LINUX_VIDIOC_QBUF:
3328 	case LINUX_VIDIOC_DQBUF:
3329 		error = copyin((void *)args->arg, &l_vbuf, sizeof(l_vbuf));
3330 		if (error)
3331 			return (error);
3332 		error = fget(td, args->fd,
3333 		    &cap_ioctl_rights, &fp);
3334 		if (error)
3335 			return (error);
3336 		linux_to_bsd_v4l2_buffer(&l_vbuf, &vbuf);
3337 		if ((args->cmd & 0xffff) == LINUX_VIDIOC_QUERYBUF)
3338 			error = fo_ioctl(fp, VIDIOC_QUERYBUF, &vbuf,
3339 			    td->td_ucred, td);
3340 		else if ((args->cmd & 0xffff) == LINUX_VIDIOC_QBUF)
3341 			error = fo_ioctl(fp, VIDIOC_QBUF, &vbuf,
3342 			    td->td_ucred, td);
3343 		else
3344 			error = fo_ioctl(fp, VIDIOC_DQBUF, &vbuf,
3345 			    td->td_ucred, td);
3346 		bsd_to_linux_v4l2_buffer(&vbuf, &l_vbuf);
3347 		copyout(&l_vbuf, (void *)args->arg, sizeof(l_vbuf));
3348 		fdrop(fp, td);
3349 		return (error);
3350 
3351 	/*
3352 	 * XXX TODO - these need 32 -> 64 bit conversion:
3353 	 * (are any of them needed for webcams?)
3354 	 */
3355 	case LINUX_VIDIOC_G_FBUF:
3356 	case LINUX_VIDIOC_S_FBUF:
3357 
3358 	case LINUX_VIDIOC_G_EXT_CTRLS:
3359 	case LINUX_VIDIOC_S_EXT_CTRLS:
3360 	case LINUX_VIDIOC_TRY_EXT_CTRLS:
3361 
3362 	case LINUX_VIDIOC_DQEVENT:
3363 
3364 	default:			return (ENOIOCTL);
3365 	}
3366 
3367 	error = sys_ioctl(td, (struct ioctl_args *)args);
3368 	return (error);
3369 }
3370 
3371 /*
3372  * Support for emulators/linux-libusb. This port uses FBSD_LUSB* macros
3373  * instead of USB* ones. This lets us to provide correct values for cmd.
3374  * 0xffffffe0 -- 0xffffffff range seemed to be the least collision-prone.
3375  */
3376 static int
3377 linux_ioctl_fbsd_usb(struct thread *td, struct linux_ioctl_args *args)
3378 {
3379 	int error;
3380 
3381 	error = 0;
3382 	switch (args->cmd) {
3383 	case FBSD_LUSB_DEVICEENUMERATE:
3384 		args->cmd = USB_DEVICEENUMERATE;
3385 		break;
3386 	case FBSD_LUSB_DEV_QUIRK_ADD:
3387 		args->cmd = USB_DEV_QUIRK_ADD;
3388 		break;
3389 	case FBSD_LUSB_DEV_QUIRK_GET:
3390 		args->cmd = USB_DEV_QUIRK_GET;
3391 		break;
3392 	case FBSD_LUSB_DEV_QUIRK_REMOVE:
3393 		args->cmd = USB_DEV_QUIRK_REMOVE;
3394 		break;
3395 	case FBSD_LUSB_DO_REQUEST:
3396 		args->cmd = USB_DO_REQUEST;
3397 		break;
3398 	case FBSD_LUSB_FS_CLEAR_STALL_SYNC:
3399 		args->cmd = USB_FS_CLEAR_STALL_SYNC;
3400 		break;
3401 	case FBSD_LUSB_FS_CLOSE:
3402 		args->cmd = USB_FS_CLOSE;
3403 		break;
3404 	case FBSD_LUSB_FS_COMPLETE:
3405 		args->cmd = USB_FS_COMPLETE;
3406 		break;
3407 	case FBSD_LUSB_FS_INIT:
3408 		args->cmd = USB_FS_INIT;
3409 		break;
3410 	case FBSD_LUSB_FS_OPEN:
3411 		args->cmd = USB_FS_OPEN;
3412 		break;
3413 	case FBSD_LUSB_FS_START:
3414 		args->cmd = USB_FS_START;
3415 		break;
3416 	case FBSD_LUSB_FS_STOP:
3417 		args->cmd = USB_FS_STOP;
3418 		break;
3419 	case FBSD_LUSB_FS_UNINIT:
3420 		args->cmd = USB_FS_UNINIT;
3421 		break;
3422 	case FBSD_LUSB_GET_CONFIG:
3423 		args->cmd = USB_GET_CONFIG;
3424 		break;
3425 	case FBSD_LUSB_GET_DEVICEINFO:
3426 		args->cmd = USB_GET_DEVICEINFO;
3427 		break;
3428 	case FBSD_LUSB_GET_DEVICE_DESC:
3429 		args->cmd = USB_GET_DEVICE_DESC;
3430 		break;
3431 	case FBSD_LUSB_GET_FULL_DESC:
3432 		args->cmd = USB_GET_FULL_DESC;
3433 		break;
3434 	case FBSD_LUSB_GET_IFACE_DRIVER:
3435 		args->cmd = USB_GET_IFACE_DRIVER;
3436 		break;
3437 	case FBSD_LUSB_GET_PLUGTIME:
3438 		args->cmd = USB_GET_PLUGTIME;
3439 		break;
3440 	case FBSD_LUSB_GET_POWER_MODE:
3441 		args->cmd = USB_GET_POWER_MODE;
3442 		break;
3443 	case FBSD_LUSB_GET_REPORT_DESC:
3444 		args->cmd = USB_GET_REPORT_DESC;
3445 		break;
3446 	case FBSD_LUSB_GET_REPORT_ID:
3447 		args->cmd = USB_GET_REPORT_ID;
3448 		break;
3449 	case FBSD_LUSB_GET_TEMPLATE:
3450 		args->cmd = USB_GET_TEMPLATE;
3451 		break;
3452 	case FBSD_LUSB_IFACE_DRIVER_ACTIVE:
3453 		args->cmd = USB_IFACE_DRIVER_ACTIVE;
3454 		break;
3455 	case FBSD_LUSB_IFACE_DRIVER_DETACH:
3456 		args->cmd = USB_IFACE_DRIVER_DETACH;
3457 		break;
3458 	case FBSD_LUSB_QUIRK_NAME_GET:
3459 		args->cmd = USB_QUIRK_NAME_GET;
3460 		break;
3461 	case FBSD_LUSB_READ_DIR:
3462 		args->cmd = USB_READ_DIR;
3463 		break;
3464 	case FBSD_LUSB_SET_ALTINTERFACE:
3465 		args->cmd = USB_SET_ALTINTERFACE;
3466 		break;
3467 	case FBSD_LUSB_SET_CONFIG:
3468 		args->cmd = USB_SET_CONFIG;
3469 		break;
3470 	case FBSD_LUSB_SET_IMMED:
3471 		args->cmd = USB_SET_IMMED;
3472 		break;
3473 	case FBSD_LUSB_SET_POWER_MODE:
3474 		args->cmd = USB_SET_POWER_MODE;
3475 		break;
3476 	case FBSD_LUSB_SET_TEMPLATE:
3477 		args->cmd = USB_SET_TEMPLATE;
3478 		break;
3479 	case FBSD_LUSB_FS_OPEN_STREAM:
3480 		args->cmd = USB_FS_OPEN_STREAM;
3481 		break;
3482 	case FBSD_LUSB_GET_DEV_PORT_PATH:
3483 		args->cmd = USB_GET_DEV_PORT_PATH;
3484 		break;
3485 	case FBSD_LUSB_GET_POWER_USAGE:
3486 		args->cmd = USB_GET_POWER_USAGE;
3487 		break;
3488 	case FBSD_LUSB_DEVICESTATS:
3489 		args->cmd = USB_DEVICESTATS;
3490 		break;
3491 	default:
3492 		error = ENOIOCTL;
3493 	}
3494 	if (error != ENOIOCTL)
3495 		error = sys_ioctl(td, (struct ioctl_args *)args);
3496 	return (error);
3497 }
3498 
3499 /*
3500  * Some evdev ioctls must be translated.
3501  *  - EVIOCGMTSLOTS is a IOC_READ ioctl on Linux although it has input data
3502  *    (must be IOC_INOUT on FreeBSD).
3503  *  - On Linux, EVIOCGRAB, EVIOCREVOKE and EVIOCRMFF are defined as _IOW with
3504  *    an int argument. You don't pass an int pointer to the ioctl(), however,
3505  *    but just the int directly. On FreeBSD, they are defined as _IOWINT for
3506  *    this to work.
3507  */
3508 static int
3509 linux_ioctl_evdev(struct thread *td, struct linux_ioctl_args *args)
3510 {
3511 	struct file *fp;
3512 	clockid_t clock;
3513 	int error;
3514 
3515 	args->cmd = SETDIR(args->cmd);
3516 
3517 	switch (args->cmd) {
3518 	case (EVIOCGRAB & ~IOC_DIRMASK) | IOC_IN:
3519 		args->cmd = EVIOCGRAB;
3520 		break;
3521 	case (EVIOCREVOKE & ~IOC_DIRMASK) | IOC_IN:
3522 		args->cmd = EVIOCREVOKE;
3523 		break;
3524 	case (EVIOCRMFF & ~IOC_DIRMASK) | IOC_IN:
3525 		args->cmd = EVIOCRMFF;
3526 		break;
3527 	case EVIOCSCLOCKID: {
3528 		error = copyin(PTRIN(args->arg), &clock, sizeof(clock));
3529 		if (error != 0)
3530 			return (error);
3531 		if (clock & ~(LINUX_IOCTL_EVDEV_CLK))
3532 			return (EINVAL);
3533 		error = linux_to_native_clockid(&clock, clock);
3534 		if (error != 0)
3535 			return (error);
3536 
3537 		error = fget(td, args->fd,
3538 		    &cap_ioctl_rights, &fp);
3539 		if (error != 0)
3540 			return (error);
3541 
3542 		error = fo_ioctl(fp, EVIOCSCLOCKID, &clock, td->td_ucred, td);
3543 		fdrop(fp, td);
3544 		return (error);
3545 	}
3546 	default:
3547 		break;
3548 	}
3549 
3550 	if (IOCBASECMD(args->cmd) ==
3551 	    ((EVIOCGMTSLOTS(0) & ~IOC_DIRMASK) | IOC_OUT))
3552 		args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
3553 
3554 	return (sys_ioctl(td, (struct ioctl_args *)args));
3555 }
3556 
3557 static int
3558 linux_ioctl_kcov(struct thread *td, struct linux_ioctl_args *args)
3559 {
3560 	int error;
3561 
3562 	error = 0;
3563 	switch (args->cmd & 0xffff) {
3564 	case LINUX_KCOV_INIT_TRACE:
3565 		args->cmd = KIOSETBUFSIZE;
3566 		break;
3567 	case LINUX_KCOV_ENABLE:
3568 		args->cmd = KIOENABLE;
3569 		if (args->arg == 0)
3570 			args->arg = KCOV_MODE_TRACE_PC;
3571 		else if (args->arg == 1)
3572 			args->arg = KCOV_MODE_TRACE_CMP;
3573 		else
3574 			error = EINVAL;
3575 		break;
3576 	case LINUX_KCOV_DISABLE:
3577 		args->cmd = KIODISABLE;
3578 		break;
3579 	default:
3580 		error = ENOTTY;
3581 		break;
3582 	}
3583 
3584 	if (error == 0)
3585 		error = sys_ioctl(td, (struct ioctl_args *)args);
3586 	return (error);
3587 }
3588 
3589 /*
3590  * main ioctl syscall function
3591  */
3592 
3593 static int
3594 linux_ioctl_fallback(struct thread *td, struct linux_ioctl_args *args)
3595 {
3596 	struct file *fp;
3597 	struct linux_ioctl_handler_element *he;
3598 	int error, cmd;
3599 
3600 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
3601 	if (error != 0)
3602 		return (error);
3603 	if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
3604 		fdrop(fp, td);
3605 		return (EBADF);
3606 	}
3607 
3608 	/* Iterate over the ioctl handlers */
3609 	cmd = args->cmd & 0xffff;
3610 	sx_slock(&linux_ioctl_sx);
3611 	mtx_lock(&Giant);
3612 #ifdef COMPAT_LINUX32
3613 	TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
3614 		if (cmd >= he->low && cmd <= he->high) {
3615 			error = (*he->func)(td, args);
3616 			if (error != ENOIOCTL) {
3617 				mtx_unlock(&Giant);
3618 				sx_sunlock(&linux_ioctl_sx);
3619 				fdrop(fp, td);
3620 				return (error);
3621 			}
3622 		}
3623 	}
3624 #endif
3625 	TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
3626 		if (cmd >= he->low && cmd <= he->high) {
3627 			error = (*he->func)(td, args);
3628 			if (error != ENOIOCTL) {
3629 				mtx_unlock(&Giant);
3630 				sx_sunlock(&linux_ioctl_sx);
3631 				fdrop(fp, td);
3632 				return (error);
3633 			}
3634 		}
3635 	}
3636 	mtx_unlock(&Giant);
3637 	sx_sunlock(&linux_ioctl_sx);
3638 	fdrop(fp, td);
3639 
3640 	switch (args->cmd & 0xffff) {
3641 	case LINUX_BTRFS_IOC_CLONE:
3642 	case LINUX_F2FS_IOC_GET_FEATURES:
3643 	case LINUX_FS_IOC_FIEMAP:
3644 		return (ENOTSUP);
3645 
3646 	default:
3647 		linux_msg(td, "%s fd=%d, cmd=0x%x ('%c',%d) is not implemented",
3648 		    __func__, args->fd, args->cmd,
3649 		    (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
3650 		break;
3651 	}
3652 
3653 	return (EINVAL);
3654 }
3655 
3656 int
3657 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
3658 {
3659 	struct linux_ioctl_handler *handler;
3660 	int error, cmd, i;
3661 
3662 	cmd = args->cmd & 0xffff;
3663 
3664 	/*
3665 	 * array of ioctls known at compilation time. Elides a lot of work on
3666 	 * each call compared to the list variant. Everything frequently used
3667 	 * should be moved here.
3668 	 *
3669 	 * Arguably the magic creating the list should create an array instead.
3670 	 *
3671 	 * For now just a linear scan.
3672 	 */
3673 	for (i = 0; i < nitems(linux_ioctls); i++) {
3674 		handler = &linux_ioctls[i];
3675 		if (cmd >= handler->low && cmd <= handler->high) {
3676 			error = (*handler->func)(td, args);
3677 			if (error != ENOIOCTL) {
3678 				return (error);
3679 			}
3680 		}
3681 	}
3682 	return (linux_ioctl_fallback(td, args));
3683 }
3684 
3685 int
3686 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
3687 {
3688 	struct linux_ioctl_handler_element *he, *cur;
3689 
3690 	if (h == NULL || h->func == NULL)
3691 		return (EINVAL);
3692 
3693 	/*
3694 	 * Reuse the element if the handler is already on the list, otherwise
3695 	 * create a new element.
3696 	 */
3697 	sx_xlock(&linux_ioctl_sx);
3698 	TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
3699 		if (he->func == h->func)
3700 			break;
3701 	}
3702 	if (he == NULL) {
3703 		he = malloc(sizeof(*he),
3704 		    M_LINUX, M_WAITOK);
3705 		he->func = h->func;
3706 	} else
3707 		TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
3708 
3709 	/* Initialize range information. */
3710 	he->low = h->low;
3711 	he->high = h->high;
3712 	he->span = h->high - h->low + 1;
3713 
3714 	/* Add the element to the list, sorted on span. */
3715 	TAILQ_FOREACH(cur, &linux_ioctl_handlers, list) {
3716 		if (cur->span > he->span) {
3717 			TAILQ_INSERT_BEFORE(cur, he, list);
3718 			sx_xunlock(&linux_ioctl_sx);
3719 			return (0);
3720 		}
3721 	}
3722 	TAILQ_INSERT_TAIL(&linux_ioctl_handlers, he, list);
3723 	sx_xunlock(&linux_ioctl_sx);
3724 
3725 	return (0);
3726 }
3727 
3728 int
3729 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
3730 {
3731 	struct linux_ioctl_handler_element *he;
3732 
3733 	if (h == NULL || h->func == NULL)
3734 		return (EINVAL);
3735 
3736 	sx_xlock(&linux_ioctl_sx);
3737 	TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
3738 		if (he->func == h->func) {
3739 			TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
3740 			sx_xunlock(&linux_ioctl_sx);
3741 			free(he, M_LINUX);
3742 			return (0);
3743 		}
3744 	}
3745 	sx_xunlock(&linux_ioctl_sx);
3746 
3747 	return (EINVAL);
3748 }
3749 
3750 #ifdef COMPAT_LINUX32
3751 int
3752 linux32_ioctl_register_handler(struct linux_ioctl_handler *h)
3753 {
3754 	struct linux_ioctl_handler_element *he, *cur;
3755 
3756 	if (h == NULL || h->func == NULL)
3757 		return (EINVAL);
3758 
3759 	/*
3760 	 * Reuse the element if the handler is already on the list, otherwise
3761 	 * create a new element.
3762 	 */
3763 	sx_xlock(&linux_ioctl_sx);
3764 	TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
3765 		if (he->func == h->func)
3766 			break;
3767 	}
3768 	if (he == NULL) {
3769 		he = malloc(sizeof(*he), M_LINUX, M_WAITOK);
3770 		he->func = h->func;
3771 	} else
3772 		TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
3773 
3774 	/* Initialize range information. */
3775 	he->low = h->low;
3776 	he->high = h->high;
3777 	he->span = h->high - h->low + 1;
3778 
3779 	/* Add the element to the list, sorted on span. */
3780 	TAILQ_FOREACH(cur, &linux32_ioctl_handlers, list) {
3781 		if (cur->span > he->span) {
3782 			TAILQ_INSERT_BEFORE(cur, he, list);
3783 			sx_xunlock(&linux_ioctl_sx);
3784 			return (0);
3785 		}
3786 	}
3787 	TAILQ_INSERT_TAIL(&linux32_ioctl_handlers, he, list);
3788 	sx_xunlock(&linux_ioctl_sx);
3789 
3790 	return (0);
3791 }
3792 
3793 int
3794 linux32_ioctl_unregister_handler(struct linux_ioctl_handler *h)
3795 {
3796 	struct linux_ioctl_handler_element *he;
3797 
3798 	if (h == NULL || h->func == NULL)
3799 		return (EINVAL);
3800 
3801 	sx_xlock(&linux_ioctl_sx);
3802 	TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
3803 		if (he->func == h->func) {
3804 			TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
3805 			sx_xunlock(&linux_ioctl_sx);
3806 			free(he, M_LINUX);
3807 			return (0);
3808 		}
3809 	}
3810 	sx_xunlock(&linux_ioctl_sx);
3811 
3812 	return (EINVAL);
3813 }
3814 #endif
3815