xref: /freebsd/sys/compat/linux/linux_ioctl.c (revision 42249ef2)
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 #include <sys/capsicum.h>
38 #include <sys/cdio.h>
39 #include <sys/dvdio.h>
40 #include <sys/conf.h>
41 #include <sys/disk.h>
42 #include <sys/consio.h>
43 #include <sys/ctype.h>
44 #include <sys/fcntl.h>
45 #include <sys/file.h>
46 #include <sys/filedesc.h>
47 #include <sys/filio.h>
48 #include <sys/jail.h>
49 #include <sys/kbio.h>
50 #include <sys/kernel.h>
51 #include <sys/linker_set.h>
52 #include <sys/lock.h>
53 #include <sys/malloc.h>
54 #include <sys/proc.h>
55 #include <sys/sbuf.h>
56 #include <sys/socket.h>
57 #include <sys/sockio.h>
58 #include <sys/soundcard.h>
59 #include <sys/stdint.h>
60 #include <sys/sx.h>
61 #include <sys/sysctl.h>
62 #include <sys/tty.h>
63 #include <sys/uio.h>
64 #include <sys/types.h>
65 #include <sys/mman.h>
66 #include <sys/resourcevar.h>
67 
68 #include <net/if.h>
69 #include <net/if_var.h>
70 #include <net/if_dl.h>
71 #include <net/if_types.h>
72 
73 #include <dev/evdev/input.h>
74 #include <dev/usb/usb_ioctl.h>
75 
76 #ifdef COMPAT_LINUX32
77 #include <machine/../linux32/linux.h>
78 #include <machine/../linux32/linux32_proto.h>
79 #else
80 #include <machine/../linux/linux.h>
81 #include <machine/../linux/linux_proto.h>
82 #endif
83 
84 #include <compat/linux/linux_common.h>
85 #include <compat/linux/linux_ioctl.h>
86 #include <compat/linux/linux_mib.h>
87 #include <compat/linux/linux_socket.h>
88 #include <compat/linux/linux_timer.h>
89 #include <compat/linux/linux_util.h>
90 
91 #include <contrib/v4l/videodev.h>
92 #include <compat/linux/linux_videodev_compat.h>
93 
94 #include <contrib/v4l/videodev2.h>
95 #include <compat/linux/linux_videodev2_compat.h>
96 
97 #include <cam/scsi/scsi_sg.h>
98 
99 CTASSERT(LINUX_IFNAMSIZ == IFNAMSIZ);
100 
101 static linux_ioctl_function_t linux_ioctl_cdrom;
102 static linux_ioctl_function_t linux_ioctl_vfat;
103 static linux_ioctl_function_t linux_ioctl_console;
104 static linux_ioctl_function_t linux_ioctl_hdio;
105 static linux_ioctl_function_t linux_ioctl_disk;
106 static linux_ioctl_function_t linux_ioctl_socket;
107 static linux_ioctl_function_t linux_ioctl_sound;
108 static linux_ioctl_function_t linux_ioctl_termio;
109 static linux_ioctl_function_t linux_ioctl_private;
110 static linux_ioctl_function_t linux_ioctl_drm;
111 static linux_ioctl_function_t linux_ioctl_sg;
112 static linux_ioctl_function_t linux_ioctl_v4l;
113 static linux_ioctl_function_t linux_ioctl_v4l2;
114 static linux_ioctl_function_t linux_ioctl_special;
115 static linux_ioctl_function_t linux_ioctl_fbsd_usb;
116 static linux_ioctl_function_t linux_ioctl_evdev;
117 
118 static struct linux_ioctl_handler cdrom_handler =
119 { linux_ioctl_cdrom, LINUX_IOCTL_CDROM_MIN, LINUX_IOCTL_CDROM_MAX };
120 static struct linux_ioctl_handler vfat_handler =
121 { linux_ioctl_vfat, LINUX_IOCTL_VFAT_MIN, LINUX_IOCTL_VFAT_MAX };
122 static struct linux_ioctl_handler console_handler =
123 { linux_ioctl_console, LINUX_IOCTL_CONSOLE_MIN, LINUX_IOCTL_CONSOLE_MAX };
124 static struct linux_ioctl_handler hdio_handler =
125 { linux_ioctl_hdio, LINUX_IOCTL_HDIO_MIN, LINUX_IOCTL_HDIO_MAX };
126 static struct linux_ioctl_handler disk_handler =
127 { linux_ioctl_disk, LINUX_IOCTL_DISK_MIN, LINUX_IOCTL_DISK_MAX };
128 static struct linux_ioctl_handler socket_handler =
129 { linux_ioctl_socket, LINUX_IOCTL_SOCKET_MIN, LINUX_IOCTL_SOCKET_MAX };
130 static struct linux_ioctl_handler sound_handler =
131 { linux_ioctl_sound, LINUX_IOCTL_SOUND_MIN, LINUX_IOCTL_SOUND_MAX };
132 static struct linux_ioctl_handler termio_handler =
133 { linux_ioctl_termio, LINUX_IOCTL_TERMIO_MIN, LINUX_IOCTL_TERMIO_MAX };
134 static struct linux_ioctl_handler private_handler =
135 { linux_ioctl_private, LINUX_IOCTL_PRIVATE_MIN, LINUX_IOCTL_PRIVATE_MAX };
136 static struct linux_ioctl_handler drm_handler =
137 { linux_ioctl_drm, LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX };
138 static struct linux_ioctl_handler sg_handler =
139 { linux_ioctl_sg, LINUX_IOCTL_SG_MIN, LINUX_IOCTL_SG_MAX };
140 static struct linux_ioctl_handler video_handler =
141 { linux_ioctl_v4l, LINUX_IOCTL_VIDEO_MIN, LINUX_IOCTL_VIDEO_MAX };
142 static struct linux_ioctl_handler video2_handler =
143 { linux_ioctl_v4l2, LINUX_IOCTL_VIDEO2_MIN, LINUX_IOCTL_VIDEO2_MAX };
144 static struct linux_ioctl_handler fbsd_usb =
145 { linux_ioctl_fbsd_usb, FBSD_LUSB_MIN, FBSD_LUSB_MAX };
146 static struct linux_ioctl_handler evdev_handler =
147 { linux_ioctl_evdev, LINUX_IOCTL_EVDEV_MIN, LINUX_IOCTL_EVDEV_MAX };
148 
149 DATA_SET(linux_ioctl_handler_set, cdrom_handler);
150 DATA_SET(linux_ioctl_handler_set, vfat_handler);
151 DATA_SET(linux_ioctl_handler_set, console_handler);
152 DATA_SET(linux_ioctl_handler_set, hdio_handler);
153 DATA_SET(linux_ioctl_handler_set, disk_handler);
154 DATA_SET(linux_ioctl_handler_set, socket_handler);
155 DATA_SET(linux_ioctl_handler_set, sound_handler);
156 DATA_SET(linux_ioctl_handler_set, termio_handler);
157 DATA_SET(linux_ioctl_handler_set, private_handler);
158 DATA_SET(linux_ioctl_handler_set, drm_handler);
159 DATA_SET(linux_ioctl_handler_set, sg_handler);
160 DATA_SET(linux_ioctl_handler_set, video_handler);
161 DATA_SET(linux_ioctl_handler_set, video2_handler);
162 DATA_SET(linux_ioctl_handler_set, fbsd_usb);
163 DATA_SET(linux_ioctl_handler_set, evdev_handler);
164 
165 #ifdef __i386__
166 static TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers =
167     TAILQ_HEAD_INITIALIZER(linux_ioctl_handlers);
168 static struct sx linux_ioctl_sx;
169 SX_SYSINIT(linux_ioctl, &linux_ioctl_sx, "Linux ioctl handlers");
170 #else
171 extern TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers;
172 extern struct sx linux_ioctl_sx;
173 #endif
174 #ifdef COMPAT_LINUX32
175 static TAILQ_HEAD(, linux_ioctl_handler_element) linux32_ioctl_handlers =
176     TAILQ_HEAD_INITIALIZER(linux32_ioctl_handlers);
177 #endif
178 
179 /*
180  * hdio related ioctls for VMWare support
181  */
182 
183 struct linux_hd_geometry {
184 	u_int8_t	heads;
185 	u_int8_t	sectors;
186 	u_int16_t	cylinders;
187 	u_int32_t	start;
188 };
189 
190 struct linux_hd_big_geometry {
191 	u_int8_t	heads;
192 	u_int8_t	sectors;
193 	u_int32_t	cylinders;
194 	u_int32_t	start;
195 };
196 
197 static int
198 linux_ioctl_hdio(struct thread *td, struct linux_ioctl_args *args)
199 {
200 	struct file *fp;
201 	int error;
202 	u_int sectorsize, fwcylinders, fwheads, fwsectors;
203 	off_t mediasize, bytespercyl;
204 
205 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
206 	if (error != 0)
207 		return (error);
208 	switch (args->cmd & 0xffff) {
209 	case LINUX_HDIO_GET_GEO:
210 	case LINUX_HDIO_GET_GEO_BIG:
211 		error = fo_ioctl(fp, DIOCGMEDIASIZE,
212 			(caddr_t)&mediasize, td->td_ucred, td);
213 		if (!error)
214 			error = fo_ioctl(fp, DIOCGSECTORSIZE,
215 				(caddr_t)&sectorsize, td->td_ucred, td);
216 		if (!error)
217 			error = fo_ioctl(fp, DIOCGFWHEADS,
218 				(caddr_t)&fwheads, td->td_ucred, td);
219 		if (!error)
220 			error = fo_ioctl(fp, DIOCGFWSECTORS,
221 				(caddr_t)&fwsectors, td->td_ucred, td);
222 		/*
223 		 * XXX: DIOCGFIRSTOFFSET is not yet implemented, so
224 		 * so pretend that GEOM always says 0. This is NOT VALID
225 		 * for slices or partitions, only the per-disk raw devices.
226 		 */
227 
228 		fdrop(fp, td);
229 		if (error)
230 			return (error);
231 		/*
232 		 * 1. Calculate the number of bytes in a cylinder,
233 		 *    given the firmware's notion of heads and sectors
234 		 *    per cylinder.
235 		 * 2. Calculate the number of cylinders, given the total
236 		 *    size of the media.
237 		 * All internal calculations should have 64-bit precision.
238 		 */
239 		bytespercyl = (off_t) sectorsize * fwheads * fwsectors;
240 		fwcylinders = mediasize / bytespercyl;
241 
242 		if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO) {
243 			struct linux_hd_geometry hdg;
244 
245 			hdg.cylinders = fwcylinders;
246 			hdg.heads = fwheads;
247 			hdg.sectors = fwsectors;
248 			hdg.start = 0;
249 			error = copyout(&hdg, (void *)args->arg, sizeof(hdg));
250 		} else if ((args->cmd & 0xffff) == LINUX_HDIO_GET_GEO_BIG) {
251 			struct linux_hd_big_geometry hdbg;
252 
253 			memset(&hdbg, 0, sizeof(hdbg));
254 			hdbg.cylinders = fwcylinders;
255 			hdbg.heads = fwheads;
256 			hdbg.sectors = fwsectors;
257 			hdbg.start = 0;
258 			error = copyout(&hdbg, (void *)args->arg, sizeof(hdbg));
259 		}
260 		return (error);
261 		break;
262 	default:
263 		/* XXX */
264 		linux_msg(td,
265 			"ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
266 			args->fd, (int)(args->cmd & 0xffff),
267 			(int)(args->cmd & 0xff00) >> 8,
268 			(int)(args->cmd & 0xff));
269 		break;
270 	}
271 	fdrop(fp, td);
272 	return (ENOIOCTL);
273 }
274 
275 static int
276 linux_ioctl_disk(struct thread *td, struct linux_ioctl_args *args)
277 {
278 	struct file *fp;
279 	int error;
280 	u_int sectorsize;
281 	off_t mediasize;
282 
283 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
284 	if (error != 0)
285 		return (error);
286 	switch (args->cmd & 0xffff) {
287 	case LINUX_BLKGETSIZE:
288 		error = fo_ioctl(fp, DIOCGSECTORSIZE,
289 		    (caddr_t)&sectorsize, td->td_ucred, td);
290 		if (!error)
291 			error = fo_ioctl(fp, DIOCGMEDIASIZE,
292 			    (caddr_t)&mediasize, td->td_ucred, td);
293 		fdrop(fp, td);
294 		if (error)
295 			return (error);
296 		sectorsize = mediasize / sectorsize;
297 		/*
298 		 * XXX: How do we know we return the right size of integer ?
299 		 */
300 		return (copyout(&sectorsize, (void *)args->arg,
301 		    sizeof(sectorsize)));
302 		break;
303 	case LINUX_BLKSSZGET:
304 		error = fo_ioctl(fp, DIOCGSECTORSIZE,
305 		    (caddr_t)&sectorsize, td->td_ucred, td);
306 		fdrop(fp, td);
307 		if (error)
308 			return (error);
309 		return (copyout(&sectorsize, (void *)args->arg,
310 		    sizeof(sectorsize)));
311 		break;
312 	}
313 	fdrop(fp, td);
314 	return (ENOIOCTL);
315 }
316 
317 /*
318  * termio related ioctls
319  */
320 
321 struct linux_termio {
322 	unsigned short c_iflag;
323 	unsigned short c_oflag;
324 	unsigned short c_cflag;
325 	unsigned short c_lflag;
326 	unsigned char c_line;
327 	unsigned char c_cc[LINUX_NCC];
328 };
329 
330 struct linux_termios {
331 	unsigned int c_iflag;
332 	unsigned int c_oflag;
333 	unsigned int c_cflag;
334 	unsigned int c_lflag;
335 	unsigned char c_line;
336 	unsigned char c_cc[LINUX_NCCS];
337 };
338 
339 struct linux_winsize {
340 	unsigned short ws_row, ws_col;
341 	unsigned short ws_xpixel, ws_ypixel;
342 };
343 
344 struct speedtab {
345 	int sp_speed;			/* Speed. */
346 	int sp_code;			/* Code. */
347 };
348 
349 static struct speedtab sptab[] = {
350 	{ B0, LINUX_B0 }, { B50, LINUX_B50 },
351 	{ B75, LINUX_B75 }, { B110, LINUX_B110 },
352 	{ B134, LINUX_B134 }, { B150, LINUX_B150 },
353 	{ B200, LINUX_B200 }, { B300, LINUX_B300 },
354 	{ B600, LINUX_B600 }, { B1200, LINUX_B1200 },
355 	{ B1800, LINUX_B1800 }, { B2400, LINUX_B2400 },
356 	{ B4800, LINUX_B4800 }, { B9600, LINUX_B9600 },
357 	{ B19200, LINUX_B19200 }, { B38400, LINUX_B38400 },
358 	{ B57600, LINUX_B57600 }, { B115200, LINUX_B115200 },
359 	{-1, -1 }
360 };
361 
362 struct linux_serial_struct {
363 	int	type;
364 	int	line;
365 	int	port;
366 	int	irq;
367 	int	flags;
368 	int	xmit_fifo_size;
369 	int	custom_divisor;
370 	int	baud_base;
371 	unsigned short close_delay;
372 	char	reserved_char[2];
373 	int	hub6;
374 	unsigned short closing_wait;
375 	unsigned short closing_wait2;
376 	int	reserved[4];
377 };
378 
379 static int
380 linux_to_bsd_speed(int code, struct speedtab *table)
381 {
382 	for ( ; table->sp_code != -1; table++)
383 		if (table->sp_code == code)
384 			return (table->sp_speed);
385 	return (-1);
386 }
387 
388 static int
389 bsd_to_linux_speed(int speed, struct speedtab *table)
390 {
391 	for ( ; table->sp_speed != -1; table++)
392 		if (table->sp_speed == speed)
393 			return (table->sp_code);
394 	return (-1);
395 }
396 
397 static void
398 bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
399 {
400 	int i;
401 
402 	lios->c_iflag = 0;
403 	if (bios->c_iflag & IGNBRK)
404 		lios->c_iflag |= LINUX_IGNBRK;
405 	if (bios->c_iflag & BRKINT)
406 		lios->c_iflag |= LINUX_BRKINT;
407 	if (bios->c_iflag & IGNPAR)
408 		lios->c_iflag |= LINUX_IGNPAR;
409 	if (bios->c_iflag & PARMRK)
410 		lios->c_iflag |= LINUX_PARMRK;
411 	if (bios->c_iflag & INPCK)
412 		lios->c_iflag |= LINUX_INPCK;
413 	if (bios->c_iflag & ISTRIP)
414 		lios->c_iflag |= LINUX_ISTRIP;
415 	if (bios->c_iflag & INLCR)
416 		lios->c_iflag |= LINUX_INLCR;
417 	if (bios->c_iflag & IGNCR)
418 		lios->c_iflag |= LINUX_IGNCR;
419 	if (bios->c_iflag & ICRNL)
420 		lios->c_iflag |= LINUX_ICRNL;
421 	if (bios->c_iflag & IXON)
422 		lios->c_iflag |= LINUX_IXON;
423 	if (bios->c_iflag & IXANY)
424 		lios->c_iflag |= LINUX_IXANY;
425 	if (bios->c_iflag & IXOFF)
426 		lios->c_iflag |= LINUX_IXOFF;
427 	if (bios->c_iflag & IMAXBEL)
428 		lios->c_iflag |= LINUX_IMAXBEL;
429 
430 	lios->c_oflag = 0;
431 	if (bios->c_oflag & OPOST)
432 		lios->c_oflag |= LINUX_OPOST;
433 	if (bios->c_oflag & ONLCR)
434 		lios->c_oflag |= LINUX_ONLCR;
435 	if (bios->c_oflag & TAB3)
436 		lios->c_oflag |= LINUX_XTABS;
437 
438 	lios->c_cflag = bsd_to_linux_speed(bios->c_ispeed, sptab);
439 	lios->c_cflag |= (bios->c_cflag & CSIZE) >> 4;
440 	if (bios->c_cflag & CSTOPB)
441 		lios->c_cflag |= LINUX_CSTOPB;
442 	if (bios->c_cflag & CREAD)
443 		lios->c_cflag |= LINUX_CREAD;
444 	if (bios->c_cflag & PARENB)
445 		lios->c_cflag |= LINUX_PARENB;
446 	if (bios->c_cflag & PARODD)
447 		lios->c_cflag |= LINUX_PARODD;
448 	if (bios->c_cflag & HUPCL)
449 		lios->c_cflag |= LINUX_HUPCL;
450 	if (bios->c_cflag & CLOCAL)
451 		lios->c_cflag |= LINUX_CLOCAL;
452 	if (bios->c_cflag & CRTSCTS)
453 		lios->c_cflag |= LINUX_CRTSCTS;
454 
455 	lios->c_lflag = 0;
456 	if (bios->c_lflag & ISIG)
457 		lios->c_lflag |= LINUX_ISIG;
458 	if (bios->c_lflag & ICANON)
459 		lios->c_lflag |= LINUX_ICANON;
460 	if (bios->c_lflag & ECHO)
461 		lios->c_lflag |= LINUX_ECHO;
462 	if (bios->c_lflag & ECHOE)
463 		lios->c_lflag |= LINUX_ECHOE;
464 	if (bios->c_lflag & ECHOK)
465 		lios->c_lflag |= LINUX_ECHOK;
466 	if (bios->c_lflag & ECHONL)
467 		lios->c_lflag |= LINUX_ECHONL;
468 	if (bios->c_lflag & NOFLSH)
469 		lios->c_lflag |= LINUX_NOFLSH;
470 	if (bios->c_lflag & TOSTOP)
471 		lios->c_lflag |= LINUX_TOSTOP;
472 	if (bios->c_lflag & ECHOCTL)
473 		lios->c_lflag |= LINUX_ECHOCTL;
474 	if (bios->c_lflag & ECHOPRT)
475 		lios->c_lflag |= LINUX_ECHOPRT;
476 	if (bios->c_lflag & ECHOKE)
477 		lios->c_lflag |= LINUX_ECHOKE;
478 	if (bios->c_lflag & FLUSHO)
479 		lios->c_lflag |= LINUX_FLUSHO;
480 	if (bios->c_lflag & PENDIN)
481 		lios->c_lflag |= LINUX_PENDIN;
482 	if (bios->c_lflag & IEXTEN)
483 		lios->c_lflag |= LINUX_IEXTEN;
484 
485 	for (i=0; i<LINUX_NCCS; i++)
486 		lios->c_cc[i] = LINUX_POSIX_VDISABLE;
487 	lios->c_cc[LINUX_VINTR] = bios->c_cc[VINTR];
488 	lios->c_cc[LINUX_VQUIT] = bios->c_cc[VQUIT];
489 	lios->c_cc[LINUX_VERASE] = bios->c_cc[VERASE];
490 	lios->c_cc[LINUX_VKILL] = bios->c_cc[VKILL];
491 	lios->c_cc[LINUX_VEOF] = bios->c_cc[VEOF];
492 	lios->c_cc[LINUX_VEOL] = bios->c_cc[VEOL];
493 	lios->c_cc[LINUX_VMIN] = bios->c_cc[VMIN];
494 	lios->c_cc[LINUX_VTIME] = bios->c_cc[VTIME];
495 	lios->c_cc[LINUX_VEOL2] = bios->c_cc[VEOL2];
496 	lios->c_cc[LINUX_VSUSP] = bios->c_cc[VSUSP];
497 	lios->c_cc[LINUX_VSTART] = bios->c_cc[VSTART];
498 	lios->c_cc[LINUX_VSTOP] = bios->c_cc[VSTOP];
499 	lios->c_cc[LINUX_VREPRINT] = bios->c_cc[VREPRINT];
500 	lios->c_cc[LINUX_VDISCARD] = bios->c_cc[VDISCARD];
501 	lios->c_cc[LINUX_VWERASE] = bios->c_cc[VWERASE];
502 	lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
503 
504 	for (i=0; i<LINUX_NCCS; i++) {
505 		if (i != LINUX_VMIN && i != LINUX_VTIME &&
506 		    lios->c_cc[i] == _POSIX_VDISABLE)
507 			lios->c_cc[i] = LINUX_POSIX_VDISABLE;
508 	}
509 	lios->c_line = 0;
510 }
511 
512 static void
513 linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
514 {
515 	int i;
516 
517 	bios->c_iflag = 0;
518 	if (lios->c_iflag & LINUX_IGNBRK)
519 		bios->c_iflag |= IGNBRK;
520 	if (lios->c_iflag & LINUX_BRKINT)
521 		bios->c_iflag |= BRKINT;
522 	if (lios->c_iflag & LINUX_IGNPAR)
523 		bios->c_iflag |= IGNPAR;
524 	if (lios->c_iflag & LINUX_PARMRK)
525 		bios->c_iflag |= PARMRK;
526 	if (lios->c_iflag & LINUX_INPCK)
527 		bios->c_iflag |= INPCK;
528 	if (lios->c_iflag & LINUX_ISTRIP)
529 		bios->c_iflag |= ISTRIP;
530 	if (lios->c_iflag & LINUX_INLCR)
531 		bios->c_iflag |= INLCR;
532 	if (lios->c_iflag & LINUX_IGNCR)
533 		bios->c_iflag |= IGNCR;
534 	if (lios->c_iflag & LINUX_ICRNL)
535 		bios->c_iflag |= ICRNL;
536 	if (lios->c_iflag & LINUX_IXON)
537 		bios->c_iflag |= IXON;
538 	if (lios->c_iflag & LINUX_IXANY)
539 		bios->c_iflag |= IXANY;
540 	if (lios->c_iflag & LINUX_IXOFF)
541 		bios->c_iflag |= IXOFF;
542 	if (lios->c_iflag & LINUX_IMAXBEL)
543 		bios->c_iflag |= IMAXBEL;
544 
545 	bios->c_oflag = 0;
546 	if (lios->c_oflag & LINUX_OPOST)
547 		bios->c_oflag |= OPOST;
548 	if (lios->c_oflag & LINUX_ONLCR)
549 		bios->c_oflag |= ONLCR;
550 	if (lios->c_oflag & LINUX_XTABS)
551 		bios->c_oflag |= TAB3;
552 
553 	bios->c_cflag = (lios->c_cflag & LINUX_CSIZE) << 4;
554 	if (lios->c_cflag & LINUX_CSTOPB)
555 		bios->c_cflag |= CSTOPB;
556 	if (lios->c_cflag & LINUX_CREAD)
557 		bios->c_cflag |= CREAD;
558 	if (lios->c_cflag & LINUX_PARENB)
559 		bios->c_cflag |= PARENB;
560 	if (lios->c_cflag & LINUX_PARODD)
561 		bios->c_cflag |= PARODD;
562 	if (lios->c_cflag & LINUX_HUPCL)
563 		bios->c_cflag |= HUPCL;
564 	if (lios->c_cflag & LINUX_CLOCAL)
565 		bios->c_cflag |= CLOCAL;
566 	if (lios->c_cflag & LINUX_CRTSCTS)
567 		bios->c_cflag |= CRTSCTS;
568 
569 	bios->c_lflag = 0;
570 	if (lios->c_lflag & LINUX_ISIG)
571 		bios->c_lflag |= ISIG;
572 	if (lios->c_lflag & LINUX_ICANON)
573 		bios->c_lflag |= ICANON;
574 	if (lios->c_lflag & LINUX_ECHO)
575 		bios->c_lflag |= ECHO;
576 	if (lios->c_lflag & LINUX_ECHOE)
577 		bios->c_lflag |= ECHOE;
578 	if (lios->c_lflag & LINUX_ECHOK)
579 		bios->c_lflag |= ECHOK;
580 	if (lios->c_lflag & LINUX_ECHONL)
581 		bios->c_lflag |= ECHONL;
582 	if (lios->c_lflag & LINUX_NOFLSH)
583 		bios->c_lflag |= NOFLSH;
584 	if (lios->c_lflag & LINUX_TOSTOP)
585 		bios->c_lflag |= TOSTOP;
586 	if (lios->c_lflag & LINUX_ECHOCTL)
587 		bios->c_lflag |= ECHOCTL;
588 	if (lios->c_lflag & LINUX_ECHOPRT)
589 		bios->c_lflag |= ECHOPRT;
590 	if (lios->c_lflag & LINUX_ECHOKE)
591 		bios->c_lflag |= ECHOKE;
592 	if (lios->c_lflag & LINUX_FLUSHO)
593 		bios->c_lflag |= FLUSHO;
594 	if (lios->c_lflag & LINUX_PENDIN)
595 		bios->c_lflag |= PENDIN;
596 	if (lios->c_lflag & LINUX_IEXTEN)
597 		bios->c_lflag |= IEXTEN;
598 
599 	for (i=0; i<NCCS; i++)
600 		bios->c_cc[i] = _POSIX_VDISABLE;
601 	bios->c_cc[VINTR] = lios->c_cc[LINUX_VINTR];
602 	bios->c_cc[VQUIT] = lios->c_cc[LINUX_VQUIT];
603 	bios->c_cc[VERASE] = lios->c_cc[LINUX_VERASE];
604 	bios->c_cc[VKILL] = lios->c_cc[LINUX_VKILL];
605 	bios->c_cc[VEOF] = lios->c_cc[LINUX_VEOF];
606 	bios->c_cc[VEOL] = lios->c_cc[LINUX_VEOL];
607 	bios->c_cc[VMIN] = lios->c_cc[LINUX_VMIN];
608 	bios->c_cc[VTIME] = lios->c_cc[LINUX_VTIME];
609 	bios->c_cc[VEOL2] = lios->c_cc[LINUX_VEOL2];
610 	bios->c_cc[VSUSP] = lios->c_cc[LINUX_VSUSP];
611 	bios->c_cc[VSTART] = lios->c_cc[LINUX_VSTART];
612 	bios->c_cc[VSTOP] = lios->c_cc[LINUX_VSTOP];
613 	bios->c_cc[VREPRINT] = lios->c_cc[LINUX_VREPRINT];
614 	bios->c_cc[VDISCARD] = lios->c_cc[LINUX_VDISCARD];
615 	bios->c_cc[VWERASE] = lios->c_cc[LINUX_VWERASE];
616 	bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
617 
618 	for (i=0; i<NCCS; i++) {
619 		if (i != VMIN && i != VTIME &&
620 		    bios->c_cc[i] == LINUX_POSIX_VDISABLE)
621 			bios->c_cc[i] = _POSIX_VDISABLE;
622 	}
623 
624 	bios->c_ispeed = bios->c_ospeed =
625 	    linux_to_bsd_speed(lios->c_cflag & LINUX_CBAUD, sptab);
626 }
627 
628 static void
629 bsd_to_linux_termio(struct termios *bios, struct linux_termio *lio)
630 {
631 	struct linux_termios lios;
632 
633 	memset(lio, 0, sizeof(*lio));
634 	bsd_to_linux_termios(bios, &lios);
635 	lio->c_iflag = lios.c_iflag;
636 	lio->c_oflag = lios.c_oflag;
637 	lio->c_cflag = lios.c_cflag;
638 	lio->c_lflag = lios.c_lflag;
639 	lio->c_line  = lios.c_line;
640 	memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
641 }
642 
643 static void
644 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
645 {
646 	struct linux_termios lios;
647 	int i;
648 
649 	lios.c_iflag = lio->c_iflag;
650 	lios.c_oflag = lio->c_oflag;
651 	lios.c_cflag = lio->c_cflag;
652 	lios.c_lflag = lio->c_lflag;
653 	for (i=LINUX_NCC; i<LINUX_NCCS; i++)
654 		lios.c_cc[i] = LINUX_POSIX_VDISABLE;
655 	memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
656 	linux_to_bsd_termios(&lios, bios);
657 }
658 
659 static int
660 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
661 {
662 	struct termios bios;
663 	struct linux_termios lios;
664 	struct linux_termio lio;
665 	struct file *fp;
666 	int error;
667 
668 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
669 	if (error != 0)
670 		return (error);
671 
672 	switch (args->cmd & 0xffff) {
673 
674 	case LINUX_TCGETS:
675 		error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
676 		    td);
677 		if (error)
678 			break;
679 		bsd_to_linux_termios(&bios, &lios);
680 		error = copyout(&lios, (void *)args->arg, sizeof(lios));
681 		break;
682 
683 	case LINUX_TCSETS:
684 		error = copyin((void *)args->arg, &lios, sizeof(lios));
685 		if (error)
686 			break;
687 		linux_to_bsd_termios(&lios, &bios);
688 		error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
689 		    td));
690 		break;
691 
692 	case LINUX_TCSETSW:
693 		error = copyin((void *)args->arg, &lios, sizeof(lios));
694 		if (error)
695 			break;
696 		linux_to_bsd_termios(&lios, &bios);
697 		error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
698 		    td));
699 		break;
700 
701 	case LINUX_TCSETSF:
702 		error = copyin((void *)args->arg, &lios, sizeof(lios));
703 		if (error)
704 			break;
705 		linux_to_bsd_termios(&lios, &bios);
706 		error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
707 		    td));
708 		break;
709 
710 	case LINUX_TCGETA:
711 		error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
712 		    td);
713 		if (error)
714 			break;
715 		bsd_to_linux_termio(&bios, &lio);
716 		error = (copyout(&lio, (void *)args->arg, sizeof(lio)));
717 		break;
718 
719 	case LINUX_TCSETA:
720 		error = copyin((void *)args->arg, &lio, sizeof(lio));
721 		if (error)
722 			break;
723 		linux_to_bsd_termio(&lio, &bios);
724 		error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
725 		    td));
726 		break;
727 
728 	case LINUX_TCSETAW:
729 		error = copyin((void *)args->arg, &lio, sizeof(lio));
730 		if (error)
731 			break;
732 		linux_to_bsd_termio(&lio, &bios);
733 		error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
734 		    td));
735 		break;
736 
737 	case LINUX_TCSETAF:
738 		error = copyin((void *)args->arg, &lio, sizeof(lio));
739 		if (error)
740 			break;
741 		linux_to_bsd_termio(&lio, &bios);
742 		error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
743 		    td));
744 		break;
745 
746 	/* LINUX_TCSBRK */
747 
748 	case LINUX_TCXONC: {
749 		switch (args->arg) {
750 		case LINUX_TCOOFF:
751 			args->cmd = TIOCSTOP;
752 			break;
753 		case LINUX_TCOON:
754 			args->cmd = TIOCSTART;
755 			break;
756 		case LINUX_TCIOFF:
757 		case LINUX_TCION: {
758 			int c;
759 			struct write_args wr;
760 			error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
761 			    td->td_ucred, td);
762 			if (error)
763 				break;
764 			fdrop(fp, td);
765 			c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
766 			c = bios.c_cc[c];
767 			if (c != _POSIX_VDISABLE) {
768 				wr.fd = args->fd;
769 				wr.buf = &c;
770 				wr.nbyte = sizeof(c);
771 				return (sys_write(td, &wr));
772 			} else
773 				return (0);
774 		}
775 		default:
776 			fdrop(fp, td);
777 			return (EINVAL);
778 		}
779 		args->arg = 0;
780 		error = (sys_ioctl(td, (struct ioctl_args *)args));
781 		break;
782 	}
783 
784 	case LINUX_TCFLSH: {
785 		int val;
786 		switch (args->arg) {
787 		case LINUX_TCIFLUSH:
788 			val = FREAD;
789 			break;
790 		case LINUX_TCOFLUSH:
791 			val = FWRITE;
792 			break;
793 		case LINUX_TCIOFLUSH:
794 			val = FREAD | FWRITE;
795 			break;
796 		default:
797 			fdrop(fp, td);
798 			return (EINVAL);
799 		}
800 		error = (fo_ioctl(fp,TIOCFLUSH,(caddr_t)&val,td->td_ucred,td));
801 		break;
802 	}
803 
804 	case LINUX_TIOCEXCL:
805 		args->cmd = TIOCEXCL;
806 		error = (sys_ioctl(td, (struct ioctl_args *)args));
807 		break;
808 
809 	case LINUX_TIOCNXCL:
810 		args->cmd = TIOCNXCL;
811 		error = (sys_ioctl(td, (struct ioctl_args *)args));
812 		break;
813 
814 	case LINUX_TIOCSCTTY:
815 		args->cmd = TIOCSCTTY;
816 		error = (sys_ioctl(td, (struct ioctl_args *)args));
817 		break;
818 
819 	case LINUX_TIOCGPGRP:
820 		args->cmd = TIOCGPGRP;
821 		error = (sys_ioctl(td, (struct ioctl_args *)args));
822 		break;
823 
824 	case LINUX_TIOCSPGRP:
825 		args->cmd = TIOCSPGRP;
826 		error = (sys_ioctl(td, (struct ioctl_args *)args));
827 		break;
828 
829 	/* LINUX_TIOCOUTQ */
830 	/* LINUX_TIOCSTI */
831 
832 	case LINUX_TIOCGWINSZ:
833 		args->cmd = TIOCGWINSZ;
834 		error = (sys_ioctl(td, (struct ioctl_args *)args));
835 		break;
836 
837 	case LINUX_TIOCSWINSZ:
838 		args->cmd = TIOCSWINSZ;
839 		error = (sys_ioctl(td, (struct ioctl_args *)args));
840 		break;
841 
842 	case LINUX_TIOCMGET:
843 		args->cmd = TIOCMGET;
844 		error = (sys_ioctl(td, (struct ioctl_args *)args));
845 		break;
846 
847 	case LINUX_TIOCMBIS:
848 		args->cmd = TIOCMBIS;
849 		error = (sys_ioctl(td, (struct ioctl_args *)args));
850 		break;
851 
852 	case LINUX_TIOCMBIC:
853 		args->cmd = TIOCMBIC;
854 		error = (sys_ioctl(td, (struct ioctl_args *)args));
855 		break;
856 
857 	case LINUX_TIOCMSET:
858 		args->cmd = TIOCMSET;
859 		error = (sys_ioctl(td, (struct ioctl_args *)args));
860 		break;
861 
862 	/* TIOCGSOFTCAR */
863 	/* TIOCSSOFTCAR */
864 
865 	case LINUX_FIONREAD: /* LINUX_TIOCINQ */
866 		args->cmd = FIONREAD;
867 		error = (sys_ioctl(td, (struct ioctl_args *)args));
868 		break;
869 
870 	/* LINUX_TIOCLINUX */
871 
872 	case LINUX_TIOCCONS:
873 		args->cmd = TIOCCONS;
874 		error = (sys_ioctl(td, (struct ioctl_args *)args));
875 		break;
876 
877 	case LINUX_TIOCGSERIAL: {
878 		struct linux_serial_struct lss;
879 
880 		bzero(&lss, sizeof(lss));
881 		lss.type = LINUX_PORT_16550A;
882 		lss.flags = 0;
883 		lss.close_delay = 0;
884 		error = copyout(&lss, (void *)args->arg, sizeof(lss));
885 		break;
886 	}
887 
888 	case LINUX_TIOCSSERIAL: {
889 		struct linux_serial_struct lss;
890 		error = copyin((void *)args->arg, &lss, sizeof(lss));
891 		if (error)
892 			break;
893 		/* XXX - It really helps to have an implementation that
894 		 * does nothing. NOT!
895 		 */
896 		error = 0;
897 		break;
898 	}
899 
900 	case LINUX_TIOCPKT:
901 		args->cmd = TIOCPKT;
902 		error = (sys_ioctl(td, (struct ioctl_args *)args));
903 		break;
904 
905 	case LINUX_FIONBIO:
906 		args->cmd = FIONBIO;
907 		error = (sys_ioctl(td, (struct ioctl_args *)args));
908 		break;
909 
910 	case LINUX_TIOCNOTTY:
911 		args->cmd = TIOCNOTTY;
912 		error = (sys_ioctl(td, (struct ioctl_args *)args));
913 		break;
914 
915 	case LINUX_TIOCSETD: {
916 		int line;
917 		switch (args->arg) {
918 		case LINUX_N_TTY:
919 			line = TTYDISC;
920 			break;
921 		case LINUX_N_SLIP:
922 			line = SLIPDISC;
923 			break;
924 		case LINUX_N_PPP:
925 			line = PPPDISC;
926 			break;
927 		default:
928 			fdrop(fp, td);
929 			return (EINVAL);
930 		}
931 		error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
932 		    td));
933 		break;
934 	}
935 
936 	case LINUX_TIOCGETD: {
937 		int linux_line;
938 		int bsd_line = TTYDISC;
939 		error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
940 		    td->td_ucred, td);
941 		if (error)
942 			break;
943 		switch (bsd_line) {
944 		case TTYDISC:
945 			linux_line = LINUX_N_TTY;
946 			break;
947 		case SLIPDISC:
948 			linux_line = LINUX_N_SLIP;
949 			break;
950 		case PPPDISC:
951 			linux_line = LINUX_N_PPP;
952 			break;
953 		default:
954 			fdrop(fp, td);
955 			return (EINVAL);
956 		}
957 		error = (copyout(&linux_line, (void *)args->arg, sizeof(int)));
958 		break;
959 	}
960 
961 	/* LINUX_TCSBRKP */
962 	/* LINUX_TIOCTTYGSTRUCT */
963 
964 	case LINUX_FIONCLEX:
965 		args->cmd = FIONCLEX;
966 		error = (sys_ioctl(td, (struct ioctl_args *)args));
967 		break;
968 
969 	case LINUX_FIOCLEX:
970 		args->cmd = FIOCLEX;
971 		error = (sys_ioctl(td, (struct ioctl_args *)args));
972 		break;
973 
974 	case LINUX_FIOASYNC:
975 		args->cmd = FIOASYNC;
976 		error = (sys_ioctl(td, (struct ioctl_args *)args));
977 		break;
978 
979 	/* LINUX_TIOCSERCONFIG */
980 	/* LINUX_TIOCSERGWILD */
981 	/* LINUX_TIOCSERSWILD */
982 	/* LINUX_TIOCGLCKTRMIOS */
983 	/* LINUX_TIOCSLCKTRMIOS */
984 
985 	case LINUX_TIOCSBRK:
986 		args->cmd = TIOCSBRK;
987 		error = (sys_ioctl(td, (struct ioctl_args *)args));
988 		break;
989 
990 	case LINUX_TIOCCBRK:
991 		args->cmd = TIOCCBRK;
992 		error = (sys_ioctl(td, (struct ioctl_args *)args));
993 		break;
994 	case LINUX_TIOCGPTN: {
995 		int nb;
996 
997 		error = fo_ioctl(fp, TIOCGPTN, (caddr_t)&nb, td->td_ucred, td);
998 		if (!error)
999 			error = copyout(&nb, (void *)args->arg,
1000 			    sizeof(int));
1001 		break;
1002 	}
1003 	case LINUX_TIOCSPTLCK:
1004 		/* Our unlockpt() does nothing. */
1005 		error = 0;
1006 		break;
1007 	default:
1008 		error = ENOIOCTL;
1009 		break;
1010 	}
1011 
1012 	fdrop(fp, td);
1013 	return (error);
1014 }
1015 
1016 /*
1017  * CDROM related ioctls
1018  */
1019 
1020 struct linux_cdrom_msf
1021 {
1022 	u_char	cdmsf_min0;
1023 	u_char	cdmsf_sec0;
1024 	u_char	cdmsf_frame0;
1025 	u_char	cdmsf_min1;
1026 	u_char	cdmsf_sec1;
1027 	u_char	cdmsf_frame1;
1028 };
1029 
1030 struct linux_cdrom_tochdr
1031 {
1032 	u_char	cdth_trk0;
1033 	u_char	cdth_trk1;
1034 };
1035 
1036 union linux_cdrom_addr
1037 {
1038 	struct {
1039 		u_char	minute;
1040 		u_char	second;
1041 		u_char	frame;
1042 	} msf;
1043 	int	lba;
1044 };
1045 
1046 struct linux_cdrom_tocentry
1047 {
1048 	u_char	cdte_track;
1049 	u_char	cdte_adr:4;
1050 	u_char	cdte_ctrl:4;
1051 	u_char	cdte_format;
1052 	union linux_cdrom_addr cdte_addr;
1053 	u_char	cdte_datamode;
1054 };
1055 
1056 struct linux_cdrom_subchnl
1057 {
1058 	u_char	cdsc_format;
1059 	u_char	cdsc_audiostatus;
1060 	u_char	cdsc_adr:4;
1061 	u_char	cdsc_ctrl:4;
1062 	u_char	cdsc_trk;
1063 	u_char	cdsc_ind;
1064 	union linux_cdrom_addr cdsc_absaddr;
1065 	union linux_cdrom_addr cdsc_reladdr;
1066 };
1067 
1068 struct l_cdrom_read_audio {
1069 	union linux_cdrom_addr addr;
1070 	u_char		addr_format;
1071 	l_int		nframes;
1072 	u_char		*buf;
1073 };
1074 
1075 struct l_dvd_layer {
1076 	u_char		book_version:4;
1077 	u_char		book_type:4;
1078 	u_char		min_rate:4;
1079 	u_char		disc_size:4;
1080 	u_char		layer_type:4;
1081 	u_char		track_path:1;
1082 	u_char		nlayers:2;
1083 	u_char		track_density:4;
1084 	u_char		linear_density:4;
1085 	u_char		bca:1;
1086 	u_int32_t	start_sector;
1087 	u_int32_t	end_sector;
1088 	u_int32_t	end_sector_l0;
1089 };
1090 
1091 struct l_dvd_physical {
1092 	u_char		type;
1093 	u_char		layer_num;
1094 	struct l_dvd_layer layer[4];
1095 };
1096 
1097 struct l_dvd_copyright {
1098 	u_char		type;
1099 	u_char		layer_num;
1100 	u_char		cpst;
1101 	u_char		rmi;
1102 };
1103 
1104 struct l_dvd_disckey {
1105 	u_char		type;
1106 	l_uint		agid:2;
1107 	u_char		value[2048];
1108 };
1109 
1110 struct l_dvd_bca {
1111 	u_char		type;
1112 	l_int		len;
1113 	u_char		value[188];
1114 };
1115 
1116 struct l_dvd_manufact {
1117 	u_char		type;
1118 	u_char		layer_num;
1119 	l_int		len;
1120 	u_char		value[2048];
1121 };
1122 
1123 typedef union {
1124 	u_char			type;
1125 	struct l_dvd_physical	physical;
1126 	struct l_dvd_copyright	copyright;
1127 	struct l_dvd_disckey	disckey;
1128 	struct l_dvd_bca	bca;
1129 	struct l_dvd_manufact	manufact;
1130 } l_dvd_struct;
1131 
1132 typedef u_char l_dvd_key[5];
1133 typedef u_char l_dvd_challenge[10];
1134 
1135 struct l_dvd_lu_send_agid {
1136 	u_char		type;
1137 	l_uint		agid:2;
1138 };
1139 
1140 struct l_dvd_host_send_challenge {
1141 	u_char		type;
1142 	l_uint		agid:2;
1143 	l_dvd_challenge	chal;
1144 };
1145 
1146 struct l_dvd_send_key {
1147 	u_char		type;
1148 	l_uint		agid:2;
1149 	l_dvd_key	key;
1150 };
1151 
1152 struct l_dvd_lu_send_challenge {
1153 	u_char		type;
1154 	l_uint		agid:2;
1155 	l_dvd_challenge	chal;
1156 };
1157 
1158 struct l_dvd_lu_send_title_key {
1159 	u_char		type;
1160 	l_uint		agid:2;
1161 	l_dvd_key	title_key;
1162 	l_int		lba;
1163 	l_uint		cpm:1;
1164 	l_uint		cp_sec:1;
1165 	l_uint		cgms:2;
1166 };
1167 
1168 struct l_dvd_lu_send_asf {
1169 	u_char		type;
1170 	l_uint		agid:2;
1171 	l_uint		asf:1;
1172 };
1173 
1174 struct l_dvd_host_send_rpcstate {
1175 	u_char		type;
1176 	u_char		pdrc;
1177 };
1178 
1179 struct l_dvd_lu_send_rpcstate {
1180 	u_char		type:2;
1181 	u_char		vra:3;
1182 	u_char		ucca:3;
1183 	u_char		region_mask;
1184 	u_char		rpc_scheme;
1185 };
1186 
1187 typedef union {
1188 	u_char				type;
1189 	struct l_dvd_lu_send_agid	lsa;
1190 	struct l_dvd_host_send_challenge hsc;
1191 	struct l_dvd_send_key		lsk;
1192 	struct l_dvd_lu_send_challenge	lsc;
1193 	struct l_dvd_send_key		hsk;
1194 	struct l_dvd_lu_send_title_key	lstk;
1195 	struct l_dvd_lu_send_asf	lsasf;
1196 	struct l_dvd_host_send_rpcstate	hrpcs;
1197 	struct l_dvd_lu_send_rpcstate	lrpcs;
1198 } l_dvd_authinfo;
1199 
1200 static void
1201 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
1202 {
1203 	if (af == CD_LBA_FORMAT)
1204 		lp->lba = bp->lba;
1205 	else {
1206 		lp->msf.minute = bp->msf.minute;
1207 		lp->msf.second = bp->msf.second;
1208 		lp->msf.frame = bp->msf.frame;
1209 	}
1210 }
1211 
1212 static void
1213 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
1214 {
1215 	if (format == LINUX_CDROM_MSF) {
1216 		addr->msf.frame = lba % 75;
1217 		lba /= 75;
1218 		lba += 2;
1219 		addr->msf.second = lba % 60;
1220 		addr->msf.minute = lba / 60;
1221 	} else
1222 		addr->lba = lba;
1223 }
1224 
1225 static int
1226 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
1227 {
1228 	bp->format = lp->type;
1229 	switch (bp->format) {
1230 	case DVD_STRUCT_PHYSICAL:
1231 		if (bp->layer_num >= 4)
1232 			return (EINVAL);
1233 		bp->layer_num = lp->physical.layer_num;
1234 		break;
1235 	case DVD_STRUCT_COPYRIGHT:
1236 		bp->layer_num = lp->copyright.layer_num;
1237 		break;
1238 	case DVD_STRUCT_DISCKEY:
1239 		bp->agid = lp->disckey.agid;
1240 		break;
1241 	case DVD_STRUCT_BCA:
1242 	case DVD_STRUCT_MANUFACT:
1243 		break;
1244 	default:
1245 		return (EINVAL);
1246 	}
1247 	return (0);
1248 }
1249 
1250 static int
1251 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
1252 {
1253 	switch (bp->format) {
1254 	case DVD_STRUCT_PHYSICAL: {
1255 		struct dvd_layer *blp = (struct dvd_layer *)bp->data;
1256 		struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
1257 		memset(llp, 0, sizeof(*llp));
1258 		llp->book_version = blp->book_version;
1259 		llp->book_type = blp->book_type;
1260 		llp->min_rate = blp->max_rate;
1261 		llp->disc_size = blp->disc_size;
1262 		llp->layer_type = blp->layer_type;
1263 		llp->track_path = blp->track_path;
1264 		llp->nlayers = blp->nlayers;
1265 		llp->track_density = blp->track_density;
1266 		llp->linear_density = blp->linear_density;
1267 		llp->bca = blp->bca;
1268 		llp->start_sector = blp->start_sector;
1269 		llp->end_sector = blp->end_sector;
1270 		llp->end_sector_l0 = blp->end_sector_l0;
1271 		break;
1272 	}
1273 	case DVD_STRUCT_COPYRIGHT:
1274 		lp->copyright.cpst = bp->cpst;
1275 		lp->copyright.rmi = bp->rmi;
1276 		break;
1277 	case DVD_STRUCT_DISCKEY:
1278 		memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
1279 		break;
1280 	case DVD_STRUCT_BCA:
1281 		lp->bca.len = bp->length;
1282 		memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
1283 		break;
1284 	case DVD_STRUCT_MANUFACT:
1285 		lp->manufact.len = bp->length;
1286 		memcpy(lp->manufact.value, bp->data,
1287 		    sizeof(lp->manufact.value));
1288 		/* lp->manufact.layer_num is unused in Linux (redhat 7.0). */
1289 		break;
1290 	default:
1291 		return (EINVAL);
1292 	}
1293 	return (0);
1294 }
1295 
1296 static int
1297 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
1298     struct dvd_authinfo *bp)
1299 {
1300 	switch (lp->type) {
1301 	case LINUX_DVD_LU_SEND_AGID:
1302 		*bcode = DVDIOCREPORTKEY;
1303 		bp->format = DVD_REPORT_AGID;
1304 		bp->agid = lp->lsa.agid;
1305 		break;
1306 	case LINUX_DVD_HOST_SEND_CHALLENGE:
1307 		*bcode = DVDIOCSENDKEY;
1308 		bp->format = DVD_SEND_CHALLENGE;
1309 		bp->agid = lp->hsc.agid;
1310 		memcpy(bp->keychal, lp->hsc.chal, 10);
1311 		break;
1312 	case LINUX_DVD_LU_SEND_KEY1:
1313 		*bcode = DVDIOCREPORTKEY;
1314 		bp->format = DVD_REPORT_KEY1;
1315 		bp->agid = lp->lsk.agid;
1316 		break;
1317 	case LINUX_DVD_LU_SEND_CHALLENGE:
1318 		*bcode = DVDIOCREPORTKEY;
1319 		bp->format = DVD_REPORT_CHALLENGE;
1320 		bp->agid = lp->lsc.agid;
1321 		break;
1322 	case LINUX_DVD_HOST_SEND_KEY2:
1323 		*bcode = DVDIOCSENDKEY;
1324 		bp->format = DVD_SEND_KEY2;
1325 		bp->agid = lp->hsk.agid;
1326 		memcpy(bp->keychal, lp->hsk.key, 5);
1327 		break;
1328 	case LINUX_DVD_LU_SEND_TITLE_KEY:
1329 		*bcode = DVDIOCREPORTKEY;
1330 		bp->format = DVD_REPORT_TITLE_KEY;
1331 		bp->agid = lp->lstk.agid;
1332 		bp->lba = lp->lstk.lba;
1333 		break;
1334 	case LINUX_DVD_LU_SEND_ASF:
1335 		*bcode = DVDIOCREPORTKEY;
1336 		bp->format = DVD_REPORT_ASF;
1337 		bp->agid = lp->lsasf.agid;
1338 		break;
1339 	case LINUX_DVD_INVALIDATE_AGID:
1340 		*bcode = DVDIOCREPORTKEY;
1341 		bp->format = DVD_INVALIDATE_AGID;
1342 		bp->agid = lp->lsa.agid;
1343 		break;
1344 	case LINUX_DVD_LU_SEND_RPC_STATE:
1345 		*bcode = DVDIOCREPORTKEY;
1346 		bp->format = DVD_REPORT_RPC;
1347 		break;
1348 	case LINUX_DVD_HOST_SEND_RPC_STATE:
1349 		*bcode = DVDIOCSENDKEY;
1350 		bp->format = DVD_SEND_RPC;
1351 		bp->region = lp->hrpcs.pdrc;
1352 		break;
1353 	default:
1354 		return (EINVAL);
1355 	}
1356 	return (0);
1357 }
1358 
1359 static int
1360 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
1361 {
1362 	switch (lp->type) {
1363 	case LINUX_DVD_LU_SEND_AGID:
1364 		lp->lsa.agid = bp->agid;
1365 		break;
1366 	case LINUX_DVD_HOST_SEND_CHALLENGE:
1367 		lp->type = LINUX_DVD_LU_SEND_KEY1;
1368 		break;
1369 	case LINUX_DVD_LU_SEND_KEY1:
1370 		memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
1371 		break;
1372 	case LINUX_DVD_LU_SEND_CHALLENGE:
1373 		memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
1374 		break;
1375 	case LINUX_DVD_HOST_SEND_KEY2:
1376 		lp->type = LINUX_DVD_AUTH_ESTABLISHED;
1377 		break;
1378 	case LINUX_DVD_LU_SEND_TITLE_KEY:
1379 		memcpy(lp->lstk.title_key, bp->keychal,
1380 		    sizeof(lp->lstk.title_key));
1381 		lp->lstk.cpm = bp->cpm;
1382 		lp->lstk.cp_sec = bp->cp_sec;
1383 		lp->lstk.cgms = bp->cgms;
1384 		break;
1385 	case LINUX_DVD_LU_SEND_ASF:
1386 		lp->lsasf.asf = bp->asf;
1387 		break;
1388 	case LINUX_DVD_INVALIDATE_AGID:
1389 		break;
1390 	case LINUX_DVD_LU_SEND_RPC_STATE:
1391 		lp->lrpcs.type = bp->reg_type;
1392 		lp->lrpcs.vra = bp->vend_rsts;
1393 		lp->lrpcs.ucca = bp->user_rsts;
1394 		lp->lrpcs.region_mask = bp->region;
1395 		lp->lrpcs.rpc_scheme = bp->rpc_scheme;
1396 		break;
1397 	case LINUX_DVD_HOST_SEND_RPC_STATE:
1398 		break;
1399 	default:
1400 		return (EINVAL);
1401 	}
1402 	return (0);
1403 }
1404 
1405 static int
1406 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
1407 {
1408 	struct file *fp;
1409 	int error;
1410 
1411 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
1412 	if (error != 0)
1413 		return (error);
1414 	switch (args->cmd & 0xffff) {
1415 
1416 	case LINUX_CDROMPAUSE:
1417 		args->cmd = CDIOCPAUSE;
1418 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1419 		break;
1420 
1421 	case LINUX_CDROMRESUME:
1422 		args->cmd = CDIOCRESUME;
1423 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1424 		break;
1425 
1426 	case LINUX_CDROMPLAYMSF:
1427 		args->cmd = CDIOCPLAYMSF;
1428 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1429 		break;
1430 
1431 	case LINUX_CDROMPLAYTRKIND:
1432 		args->cmd = CDIOCPLAYTRACKS;
1433 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1434 		break;
1435 
1436 	case LINUX_CDROMREADTOCHDR: {
1437 		struct ioc_toc_header th;
1438 		struct linux_cdrom_tochdr lth;
1439 		error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
1440 		    td->td_ucred, td);
1441 		if (!error) {
1442 			lth.cdth_trk0 = th.starting_track;
1443 			lth.cdth_trk1 = th.ending_track;
1444 			copyout(&lth, (void *)args->arg, sizeof(lth));
1445 		}
1446 		break;
1447 	}
1448 
1449 	case LINUX_CDROMREADTOCENTRY: {
1450 		struct linux_cdrom_tocentry lte;
1451 		struct ioc_read_toc_single_entry irtse;
1452 
1453 		error = copyin((void *)args->arg, &lte, sizeof(lte));
1454 		if (error)
1455 			break;
1456 		irtse.address_format = lte.cdte_format;
1457 		irtse.track = lte.cdte_track;
1458 		error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
1459 		    td->td_ucred, td);
1460 		if (!error) {
1461 			lte.cdte_ctrl = irtse.entry.control;
1462 			lte.cdte_adr = irtse.entry.addr_type;
1463 			bsd_to_linux_msf_lba(irtse.address_format,
1464 			    &irtse.entry.addr, &lte.cdte_addr);
1465 			error = copyout(&lte, (void *)args->arg, sizeof(lte));
1466 		}
1467 		break;
1468 	}
1469 
1470 	case LINUX_CDROMSTOP:
1471 		args->cmd = CDIOCSTOP;
1472 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1473 		break;
1474 
1475 	case LINUX_CDROMSTART:
1476 		args->cmd = CDIOCSTART;
1477 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1478 		break;
1479 
1480 	case LINUX_CDROMEJECT:
1481 		args->cmd = CDIOCEJECT;
1482 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1483 		break;
1484 
1485 	/* LINUX_CDROMVOLCTRL */
1486 
1487 	case LINUX_CDROMSUBCHNL: {
1488 		struct linux_cdrom_subchnl sc;
1489 		struct ioc_read_subchannel bsdsc;
1490 		struct cd_sub_channel_info bsdinfo;
1491 
1492 		error = copyin((void *)args->arg, &sc, sizeof(sc));
1493 		if (error)
1494 			break;
1495 
1496 		/*
1497 		 * Invoke the native ioctl and bounce the returned data through
1498 		 * the userspace buffer.  This works because the Linux structure
1499 		 * is the same size as our structures for the subchannel header
1500 		 * and position data.
1501 		 */
1502 		bsdsc.address_format = CD_LBA_FORMAT;
1503 		bsdsc.data_format = CD_CURRENT_POSITION;
1504 		bsdsc.track = 0;
1505 		bsdsc.data_len = sizeof(sc);
1506 		bsdsc.data = (void *)args->arg;
1507 		error = fo_ioctl(fp, CDIOCREADSUBCHANNEL, (caddr_t)&bsdsc,
1508 		    td->td_ucred, td);
1509 		if (error)
1510 			break;
1511 		error = copyin((void *)args->arg, &bsdinfo, sizeof(bsdinfo));
1512 		if (error)
1513 			break;
1514 		sc.cdsc_audiostatus = bsdinfo.header.audio_status;
1515 		sc.cdsc_adr = bsdinfo.what.position.addr_type;
1516 		sc.cdsc_ctrl = bsdinfo.what.position.control;
1517 		sc.cdsc_trk = bsdinfo.what.position.track_number;
1518 		sc.cdsc_ind = bsdinfo.what.position.index_number;
1519 		set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
1520 		    bsdinfo.what.position.absaddr.lba);
1521 		set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
1522 		    bsdinfo.what.position.reladdr.lba);
1523 		error = copyout(&sc, (void *)args->arg, sizeof(sc));
1524 		break;
1525 	}
1526 
1527 	/* LINUX_CDROMREADMODE2 */
1528 	/* LINUX_CDROMREADMODE1 */
1529 	/* LINUX_CDROMREADAUDIO */
1530 	/* LINUX_CDROMEJECT_SW */
1531 	/* LINUX_CDROMMULTISESSION */
1532 	/* LINUX_CDROM_GET_UPC */
1533 
1534 	case LINUX_CDROMRESET:
1535 		args->cmd = CDIOCRESET;
1536 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1537 		break;
1538 
1539 	/* LINUX_CDROMVOLREAD */
1540 	/* LINUX_CDROMREADRAW */
1541 	/* LINUX_CDROMREADCOOKED */
1542 	/* LINUX_CDROMSEEK */
1543 	/* LINUX_CDROMPLAYBLK */
1544 	/* LINUX_CDROMREADALL */
1545 	/* LINUX_CDROMCLOSETRAY */
1546 	/* LINUX_CDROMLOADFROMSLOT */
1547 	/* LINUX_CDROMGETSPINDOWN */
1548 	/* LINUX_CDROMSETSPINDOWN */
1549 	/* LINUX_CDROM_SET_OPTIONS */
1550 	/* LINUX_CDROM_CLEAR_OPTIONS */
1551 	/* LINUX_CDROM_SELECT_SPEED */
1552 	/* LINUX_CDROM_SELECT_DISC */
1553 	/* LINUX_CDROM_MEDIA_CHANGED */
1554 	/* LINUX_CDROM_DRIVE_STATUS */
1555 	/* LINUX_CDROM_DISC_STATUS */
1556 	/* LINUX_CDROM_CHANGER_NSLOTS */
1557 	/* LINUX_CDROM_LOCKDOOR */
1558 	/* LINUX_CDROM_DEBUG */
1559 	/* LINUX_CDROM_GET_CAPABILITY */
1560 	/* LINUX_CDROMAUDIOBUFSIZ */
1561 
1562 	case LINUX_DVD_READ_STRUCT: {
1563 		l_dvd_struct *lds;
1564 		struct dvd_struct *bds;
1565 
1566 		lds = malloc(sizeof(*lds), M_LINUX, M_WAITOK);
1567 		bds = malloc(sizeof(*bds), M_LINUX, M_WAITOK);
1568 		error = copyin((void *)args->arg, lds, sizeof(*lds));
1569 		if (error)
1570 			goto out;
1571 		error = linux_to_bsd_dvd_struct(lds, bds);
1572 		if (error)
1573 			goto out;
1574 		error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)bds,
1575 		    td->td_ucred, td);
1576 		if (error)
1577 			goto out;
1578 		error = bsd_to_linux_dvd_struct(bds, lds);
1579 		if (error)
1580 			goto out;
1581 		error = copyout(lds, (void *)args->arg, sizeof(*lds));
1582 	out:
1583 		free(bds, M_LINUX);
1584 		free(lds, M_LINUX);
1585 		break;
1586 	}
1587 
1588 	/* LINUX_DVD_WRITE_STRUCT */
1589 
1590 	case LINUX_DVD_AUTH: {
1591 		l_dvd_authinfo lda;
1592 		struct dvd_authinfo bda;
1593 		int bcode;
1594 
1595 		error = copyin((void *)args->arg, &lda, sizeof(lda));
1596 		if (error)
1597 			break;
1598 		error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
1599 		if (error)
1600 			break;
1601 		error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
1602 		    td);
1603 		if (error) {
1604 			if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
1605 				lda.type = LINUX_DVD_AUTH_FAILURE;
1606 				copyout(&lda, (void *)args->arg, sizeof(lda));
1607 			}
1608 			break;
1609 		}
1610 		error = bsd_to_linux_dvd_authinfo(&bda, &lda);
1611 		if (error)
1612 			break;
1613 		error = copyout(&lda, (void *)args->arg, sizeof(lda));
1614 		break;
1615 	}
1616 
1617 	case LINUX_SCSI_GET_BUS_NUMBER:
1618 	{
1619 		struct sg_scsi_id id;
1620 
1621 		error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
1622 		    td->td_ucred, td);
1623 		if (error)
1624 			break;
1625 		error = copyout(&id.channel, (void *)args->arg, sizeof(int));
1626 		break;
1627 	}
1628 
1629 	case LINUX_SCSI_GET_IDLUN:
1630 	{
1631 		struct sg_scsi_id id;
1632 		struct scsi_idlun idl;
1633 
1634 		error = fo_ioctl(fp, SG_GET_SCSI_ID, (caddr_t)&id,
1635 		    td->td_ucred, td);
1636 		if (error)
1637 			break;
1638 		idl.dev_id = (id.scsi_id & 0xff) + ((id.lun & 0xff) << 8) +
1639 		    ((id.channel & 0xff) << 16) + ((id.host_no & 0xff) << 24);
1640 		idl.host_unique_id = id.host_no;
1641 		error = copyout(&idl, (void *)args->arg, sizeof(idl));
1642 		break;
1643 	}
1644 
1645 	/* LINUX_CDROM_SEND_PACKET */
1646 	/* LINUX_CDROM_NEXT_WRITABLE */
1647 	/* LINUX_CDROM_LAST_WRITTEN */
1648 
1649 	default:
1650 		error = ENOIOCTL;
1651 		break;
1652 	}
1653 
1654 	fdrop(fp, td);
1655 	return (error);
1656 }
1657 
1658 static int
1659 linux_ioctl_vfat(struct thread *td, struct linux_ioctl_args *args)
1660 {
1661 
1662 	return (ENOTTY);
1663 }
1664 
1665 /*
1666  * Sound related ioctls
1667  */
1668 
1669 struct linux_old_mixer_info {
1670 	char	id[16];
1671 	char	name[32];
1672 };
1673 
1674 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
1675 
1676 #define	SETDIR(c)	(((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
1677 
1678 static int
1679 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
1680 {
1681 
1682 	switch (args->cmd & 0xffff) {
1683 
1684 	case LINUX_SOUND_MIXER_WRITE_VOLUME:
1685 		args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
1686 		return (sys_ioctl(td, (struct ioctl_args *)args));
1687 
1688 	case LINUX_SOUND_MIXER_WRITE_BASS:
1689 		args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
1690 		return (sys_ioctl(td, (struct ioctl_args *)args));
1691 
1692 	case LINUX_SOUND_MIXER_WRITE_TREBLE:
1693 		args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
1694 		return (sys_ioctl(td, (struct ioctl_args *)args));
1695 
1696 	case LINUX_SOUND_MIXER_WRITE_SYNTH:
1697 		args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
1698 		return (sys_ioctl(td, (struct ioctl_args *)args));
1699 
1700 	case LINUX_SOUND_MIXER_WRITE_PCM:
1701 		args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
1702 		return (sys_ioctl(td, (struct ioctl_args *)args));
1703 
1704 	case LINUX_SOUND_MIXER_WRITE_SPEAKER:
1705 		args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
1706 		return (sys_ioctl(td, (struct ioctl_args *)args));
1707 
1708 	case LINUX_SOUND_MIXER_WRITE_LINE:
1709 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
1710 		return (sys_ioctl(td, (struct ioctl_args *)args));
1711 
1712 	case LINUX_SOUND_MIXER_WRITE_MIC:
1713 		args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
1714 		return (sys_ioctl(td, (struct ioctl_args *)args));
1715 
1716 	case LINUX_SOUND_MIXER_WRITE_CD:
1717 		args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
1718 		return (sys_ioctl(td, (struct ioctl_args *)args));
1719 
1720 	case LINUX_SOUND_MIXER_WRITE_IMIX:
1721 		args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
1722 		return (sys_ioctl(td, (struct ioctl_args *)args));
1723 
1724 	case LINUX_SOUND_MIXER_WRITE_ALTPCM:
1725 		args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
1726 		return (sys_ioctl(td, (struct ioctl_args *)args));
1727 
1728 	case LINUX_SOUND_MIXER_WRITE_RECLEV:
1729 		args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
1730 		return (sys_ioctl(td, (struct ioctl_args *)args));
1731 
1732 	case LINUX_SOUND_MIXER_WRITE_IGAIN:
1733 		args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
1734 		return (sys_ioctl(td, (struct ioctl_args *)args));
1735 
1736 	case LINUX_SOUND_MIXER_WRITE_OGAIN:
1737 		args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
1738 		return (sys_ioctl(td, (struct ioctl_args *)args));
1739 
1740 	case LINUX_SOUND_MIXER_WRITE_LINE1:
1741 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
1742 		return (sys_ioctl(td, (struct ioctl_args *)args));
1743 
1744 	case LINUX_SOUND_MIXER_WRITE_LINE2:
1745 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
1746 		return (sys_ioctl(td, (struct ioctl_args *)args));
1747 
1748 	case LINUX_SOUND_MIXER_WRITE_LINE3:
1749 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
1750 		return (sys_ioctl(td, (struct ioctl_args *)args));
1751 
1752 	case LINUX_SOUND_MIXER_INFO: {
1753 		/* Key on encoded length */
1754 		switch ((args->cmd >> 16) & 0x1fff) {
1755 		case 0x005c: {	/* SOUND_MIXER_INFO */
1756 			args->cmd = SOUND_MIXER_INFO;
1757 			return (sys_ioctl(td, (struct ioctl_args *)args));
1758 		}
1759 		case 0x0030: {	/* SOUND_OLD_MIXER_INFO */
1760 			struct linux_old_mixer_info info;
1761 			bzero(&info, sizeof(info));
1762 			strncpy(info.id, "OSS", sizeof(info.id) - 1);
1763 			strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
1764 			copyout(&info, (void *)args->arg, sizeof(info));
1765 			return (0);
1766 		}
1767 		default:
1768 			return (ENOIOCTL);
1769 		}
1770 		break;
1771 	}
1772 
1773 	case LINUX_OSS_GETVERSION: {
1774 		int version = linux_get_oss_version(td);
1775 		return (copyout(&version, (void *)args->arg, sizeof(int)));
1776 	}
1777 
1778 	case LINUX_SOUND_MIXER_READ_STEREODEVS:
1779 		args->cmd = SOUND_MIXER_READ_STEREODEVS;
1780 		return (sys_ioctl(td, (struct ioctl_args *)args));
1781 
1782 	case LINUX_SOUND_MIXER_READ_CAPS:
1783 		args->cmd = SOUND_MIXER_READ_CAPS;
1784 		return (sys_ioctl(td, (struct ioctl_args *)args));
1785 
1786 	case LINUX_SOUND_MIXER_READ_RECMASK:
1787 		args->cmd = SOUND_MIXER_READ_RECMASK;
1788 		return (sys_ioctl(td, (struct ioctl_args *)args));
1789 
1790 	case LINUX_SOUND_MIXER_READ_DEVMASK:
1791 		args->cmd = SOUND_MIXER_READ_DEVMASK;
1792 		return (sys_ioctl(td, (struct ioctl_args *)args));
1793 
1794 	case LINUX_SOUND_MIXER_WRITE_RECSRC:
1795 		args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
1796 		return (sys_ioctl(td, (struct ioctl_args *)args));
1797 
1798 	case LINUX_SNDCTL_DSP_RESET:
1799 		args->cmd = SNDCTL_DSP_RESET;
1800 		return (sys_ioctl(td, (struct ioctl_args *)args));
1801 
1802 	case LINUX_SNDCTL_DSP_SYNC:
1803 		args->cmd = SNDCTL_DSP_SYNC;
1804 		return (sys_ioctl(td, (struct ioctl_args *)args));
1805 
1806 	case LINUX_SNDCTL_DSP_SPEED:
1807 		args->cmd = SNDCTL_DSP_SPEED;
1808 		return (sys_ioctl(td, (struct ioctl_args *)args));
1809 
1810 	case LINUX_SNDCTL_DSP_STEREO:
1811 		args->cmd = SNDCTL_DSP_STEREO;
1812 		return (sys_ioctl(td, (struct ioctl_args *)args));
1813 
1814 	case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
1815 		args->cmd = SNDCTL_DSP_GETBLKSIZE;
1816 		return (sys_ioctl(td, (struct ioctl_args *)args));
1817 
1818 	case LINUX_SNDCTL_DSP_SETFMT:
1819 		args->cmd = SNDCTL_DSP_SETFMT;
1820 		return (sys_ioctl(td, (struct ioctl_args *)args));
1821 
1822 	case LINUX_SOUND_PCM_WRITE_CHANNELS:
1823 		args->cmd = SOUND_PCM_WRITE_CHANNELS;
1824 		return (sys_ioctl(td, (struct ioctl_args *)args));
1825 
1826 	case LINUX_SOUND_PCM_WRITE_FILTER:
1827 		args->cmd = SOUND_PCM_WRITE_FILTER;
1828 		return (sys_ioctl(td, (struct ioctl_args *)args));
1829 
1830 	case LINUX_SNDCTL_DSP_POST:
1831 		args->cmd = SNDCTL_DSP_POST;
1832 		return (sys_ioctl(td, (struct ioctl_args *)args));
1833 
1834 	case LINUX_SNDCTL_DSP_SUBDIVIDE:
1835 		args->cmd = SNDCTL_DSP_SUBDIVIDE;
1836 		return (sys_ioctl(td, (struct ioctl_args *)args));
1837 
1838 	case LINUX_SNDCTL_DSP_SETFRAGMENT:
1839 		args->cmd = SNDCTL_DSP_SETFRAGMENT;
1840 		return (sys_ioctl(td, (struct ioctl_args *)args));
1841 
1842 	case LINUX_SNDCTL_DSP_GETFMTS:
1843 		args->cmd = SNDCTL_DSP_GETFMTS;
1844 		return (sys_ioctl(td, (struct ioctl_args *)args));
1845 
1846 	case LINUX_SNDCTL_DSP_GETOSPACE:
1847 		args->cmd = SNDCTL_DSP_GETOSPACE;
1848 		return (sys_ioctl(td, (struct ioctl_args *)args));
1849 
1850 	case LINUX_SNDCTL_DSP_GETISPACE:
1851 		args->cmd = SNDCTL_DSP_GETISPACE;
1852 		return (sys_ioctl(td, (struct ioctl_args *)args));
1853 
1854 	case LINUX_SNDCTL_DSP_NONBLOCK:
1855 		args->cmd = SNDCTL_DSP_NONBLOCK;
1856 		return (sys_ioctl(td, (struct ioctl_args *)args));
1857 
1858 	case LINUX_SNDCTL_DSP_GETCAPS:
1859 		args->cmd = SNDCTL_DSP_GETCAPS;
1860 		return (sys_ioctl(td, (struct ioctl_args *)args));
1861 
1862 	case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
1863 		args->cmd = SNDCTL_DSP_SETTRIGGER;
1864 		return (sys_ioctl(td, (struct ioctl_args *)args));
1865 
1866 	case LINUX_SNDCTL_DSP_GETIPTR:
1867 		args->cmd = SNDCTL_DSP_GETIPTR;
1868 		return (sys_ioctl(td, (struct ioctl_args *)args));
1869 
1870 	case LINUX_SNDCTL_DSP_GETOPTR:
1871 		args->cmd = SNDCTL_DSP_GETOPTR;
1872 		return (sys_ioctl(td, (struct ioctl_args *)args));
1873 
1874 	case LINUX_SNDCTL_DSP_SETDUPLEX:
1875 		args->cmd = SNDCTL_DSP_SETDUPLEX;
1876 		return (sys_ioctl(td, (struct ioctl_args *)args));
1877 
1878 	case LINUX_SNDCTL_DSP_GETODELAY:
1879 		args->cmd = SNDCTL_DSP_GETODELAY;
1880 		return (sys_ioctl(td, (struct ioctl_args *)args));
1881 
1882 	case LINUX_SNDCTL_SEQ_RESET:
1883 		args->cmd = SNDCTL_SEQ_RESET;
1884 		return (sys_ioctl(td, (struct ioctl_args *)args));
1885 
1886 	case LINUX_SNDCTL_SEQ_SYNC:
1887 		args->cmd = SNDCTL_SEQ_SYNC;
1888 		return (sys_ioctl(td, (struct ioctl_args *)args));
1889 
1890 	case LINUX_SNDCTL_SYNTH_INFO:
1891 		args->cmd = SNDCTL_SYNTH_INFO;
1892 		return (sys_ioctl(td, (struct ioctl_args *)args));
1893 
1894 	case LINUX_SNDCTL_SEQ_CTRLRATE:
1895 		args->cmd = SNDCTL_SEQ_CTRLRATE;
1896 		return (sys_ioctl(td, (struct ioctl_args *)args));
1897 
1898 	case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
1899 		args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
1900 		return (sys_ioctl(td, (struct ioctl_args *)args));
1901 
1902 	case LINUX_SNDCTL_SEQ_GETINCOUNT:
1903 		args->cmd = SNDCTL_SEQ_GETINCOUNT;
1904 		return (sys_ioctl(td, (struct ioctl_args *)args));
1905 
1906 	case LINUX_SNDCTL_SEQ_PERCMODE:
1907 		args->cmd = SNDCTL_SEQ_PERCMODE;
1908 		return (sys_ioctl(td, (struct ioctl_args *)args));
1909 
1910 	case LINUX_SNDCTL_FM_LOAD_INSTR:
1911 		args->cmd = SNDCTL_FM_LOAD_INSTR;
1912 		return (sys_ioctl(td, (struct ioctl_args *)args));
1913 
1914 	case LINUX_SNDCTL_SEQ_TESTMIDI:
1915 		args->cmd = SNDCTL_SEQ_TESTMIDI;
1916 		return (sys_ioctl(td, (struct ioctl_args *)args));
1917 
1918 	case LINUX_SNDCTL_SEQ_RESETSAMPLES:
1919 		args->cmd = SNDCTL_SEQ_RESETSAMPLES;
1920 		return (sys_ioctl(td, (struct ioctl_args *)args));
1921 
1922 	case LINUX_SNDCTL_SEQ_NRSYNTHS:
1923 		args->cmd = SNDCTL_SEQ_NRSYNTHS;
1924 		return (sys_ioctl(td, (struct ioctl_args *)args));
1925 
1926 	case LINUX_SNDCTL_SEQ_NRMIDIS:
1927 		args->cmd = SNDCTL_SEQ_NRMIDIS;
1928 		return (sys_ioctl(td, (struct ioctl_args *)args));
1929 
1930 	case LINUX_SNDCTL_MIDI_INFO:
1931 		args->cmd = SNDCTL_MIDI_INFO;
1932 		return (sys_ioctl(td, (struct ioctl_args *)args));
1933 
1934 	case LINUX_SNDCTL_SEQ_TRESHOLD:
1935 		args->cmd = SNDCTL_SEQ_TRESHOLD;
1936 		return (sys_ioctl(td, (struct ioctl_args *)args));
1937 
1938 	case LINUX_SNDCTL_SYNTH_MEMAVL:
1939 		args->cmd = SNDCTL_SYNTH_MEMAVL;
1940 		return (sys_ioctl(td, (struct ioctl_args *)args));
1941 
1942 	}
1943 
1944 	return (ENOIOCTL);
1945 }
1946 
1947 /*
1948  * Console related ioctls
1949  */
1950 
1951 static int
1952 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
1953 {
1954 	struct file *fp;
1955 	int error;
1956 
1957 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
1958 	if (error != 0)
1959 		return (error);
1960 	switch (args->cmd & 0xffff) {
1961 
1962 	case LINUX_KIOCSOUND:
1963 		args->cmd = KIOCSOUND;
1964 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1965 		break;
1966 
1967 	case LINUX_KDMKTONE:
1968 		args->cmd = KDMKTONE;
1969 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1970 		break;
1971 
1972 	case LINUX_KDGETLED:
1973 		args->cmd = KDGETLED;
1974 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1975 		break;
1976 
1977 	case LINUX_KDSETLED:
1978 		args->cmd = KDSETLED;
1979 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1980 		break;
1981 
1982 	case LINUX_KDSETMODE:
1983 		args->cmd = KDSETMODE;
1984 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1985 		break;
1986 
1987 	case LINUX_KDGETMODE:
1988 		args->cmd = KDGETMODE;
1989 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1990 		break;
1991 
1992 	case LINUX_KDGKBMODE:
1993 		args->cmd = KDGKBMODE;
1994 		error = (sys_ioctl(td, (struct ioctl_args *)args));
1995 		break;
1996 
1997 	case LINUX_KDSKBMODE: {
1998 		int kbdmode;
1999 		switch (args->arg) {
2000 		case LINUX_KBD_RAW:
2001 			kbdmode = K_RAW;
2002 			break;
2003 		case LINUX_KBD_XLATE:
2004 			kbdmode = K_XLATE;
2005 			break;
2006 		case LINUX_KBD_MEDIUMRAW:
2007 			kbdmode = K_RAW;
2008 			break;
2009 		default:
2010 			fdrop(fp, td);
2011 			return (EINVAL);
2012 		}
2013 		error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
2014 		    td->td_ucred, td));
2015 		break;
2016 	}
2017 
2018 	case LINUX_VT_OPENQRY:
2019 		args->cmd = VT_OPENQRY;
2020 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2021 		break;
2022 
2023 	case LINUX_VT_GETMODE:
2024 		args->cmd = VT_GETMODE;
2025 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2026 		break;
2027 
2028 	case LINUX_VT_SETMODE: {
2029 		struct vt_mode mode;
2030 		if ((error = copyin((void *)args->arg, &mode, sizeof(mode))))
2031 			break;
2032 		if (LINUX_SIG_VALID(mode.relsig))
2033 			mode.relsig = linux_to_bsd_signal(mode.relsig);
2034 		else
2035 			mode.relsig = 0;
2036 		if (LINUX_SIG_VALID(mode.acqsig))
2037 			mode.acqsig = linux_to_bsd_signal(mode.acqsig);
2038 		else
2039 			mode.acqsig = 0;
2040 		/* XXX. Linux ignores frsig and set it to 0. */
2041 		mode.frsig = 0;
2042 		if ((error = copyout(&mode, (void *)args->arg, sizeof(mode))))
2043 			break;
2044 		args->cmd = VT_SETMODE;
2045 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2046 		break;
2047 	}
2048 
2049 	case LINUX_VT_GETSTATE:
2050 		args->cmd = VT_GETACTIVE;
2051 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2052 		break;
2053 
2054 	case LINUX_VT_RELDISP:
2055 		args->cmd = VT_RELDISP;
2056 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2057 		break;
2058 
2059 	case LINUX_VT_ACTIVATE:
2060 		args->cmd = VT_ACTIVATE;
2061 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2062 		break;
2063 
2064 	case LINUX_VT_WAITACTIVE:
2065 		args->cmd = VT_WAITACTIVE;
2066 		error = (sys_ioctl(td, (struct ioctl_args *)args));
2067 		break;
2068 
2069 	default:
2070 		error = ENOIOCTL;
2071 		break;
2072 	}
2073 
2074 	fdrop(fp, td);
2075 	return (error);
2076 }
2077 
2078 /*
2079  * Implement the SIOCGIFNAME ioctl
2080  */
2081 
2082 static int
2083 linux_ioctl_ifname(struct thread *td, struct l_ifreq *uifr)
2084 {
2085 	struct l_ifreq ifr;
2086 	struct ifnet *ifp;
2087 	int error, ethno, index;
2088 
2089 	error = copyin(uifr, &ifr, sizeof(ifr));
2090 	if (error != 0)
2091 		return (error);
2092 
2093 	CURVNET_SET(TD_TO_VNET(curthread));
2094 	IFNET_RLOCK();
2095 	index = 1;	/* ifr.ifr_ifindex starts from 1 */
2096 	ethno = 0;
2097 	error = ENODEV;
2098 	CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
2099 		if (ifr.ifr_ifindex == index) {
2100 			if (IFP_IS_ETH(ifp))
2101 				snprintf(ifr.ifr_name, LINUX_IFNAMSIZ,
2102 				    "eth%d", ethno);
2103 			else
2104 				strlcpy(ifr.ifr_name, ifp->if_xname,
2105 				    LINUX_IFNAMSIZ);
2106 			error = 0;
2107 			break;
2108 		}
2109 		if (IFP_IS_ETH(ifp))
2110 			ethno++;
2111 		index++;
2112 	}
2113 	IFNET_RUNLOCK();
2114 	if (error == 0)
2115 		error = copyout(&ifr, uifr, sizeof(ifr));
2116 	CURVNET_RESTORE();
2117 
2118 	return (error);
2119 }
2120 
2121 /*
2122  * Implement the SIOCGIFCONF ioctl
2123  */
2124 
2125 static int
2126 linux_ifconf(struct thread *td, struct ifconf *uifc)
2127 {
2128 #ifdef COMPAT_LINUX32
2129 	struct l_ifconf ifc;
2130 #else
2131 	struct ifconf ifc;
2132 #endif
2133 	struct l_ifreq ifr;
2134 	struct ifnet *ifp;
2135 	struct ifaddr *ifa;
2136 	struct sbuf *sb;
2137 	int error, ethno, full = 0, valid_len, max_len;
2138 
2139 	error = copyin(uifc, &ifc, sizeof(ifc));
2140 	if (error != 0)
2141 		return (error);
2142 
2143 	max_len = MAXPHYS - 1;
2144 
2145 	CURVNET_SET(TD_TO_VNET(td));
2146 	/* handle the 'request buffer size' case */
2147 	if ((l_uintptr_t)ifc.ifc_buf == PTROUT(NULL)) {
2148 		ifc.ifc_len = 0;
2149 		IFNET_RLOCK();
2150 		CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
2151 			CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2152 				struct sockaddr *sa = ifa->ifa_addr;
2153 				if (sa->sa_family == AF_INET)
2154 					ifc.ifc_len += sizeof(ifr);
2155 			}
2156 		}
2157 		IFNET_RUNLOCK();
2158 		error = copyout(&ifc, uifc, sizeof(ifc));
2159 		CURVNET_RESTORE();
2160 		return (error);
2161 	}
2162 
2163 	if (ifc.ifc_len <= 0) {
2164 		CURVNET_RESTORE();
2165 		return (EINVAL);
2166 	}
2167 
2168 again:
2169 	/* Keep track of eth interfaces */
2170 	ethno = 0;
2171 	if (ifc.ifc_len <= max_len) {
2172 		max_len = ifc.ifc_len;
2173 		full = 1;
2174 	}
2175 	sb = sbuf_new(NULL, NULL, max_len + 1, SBUF_FIXEDLEN);
2176 	max_len = 0;
2177 	valid_len = 0;
2178 
2179 	/* Return all AF_INET addresses of all interfaces */
2180 	IFNET_RLOCK();
2181 	CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
2182 		int addrs = 0;
2183 
2184 		bzero(&ifr, sizeof(ifr));
2185 		if (IFP_IS_ETH(ifp))
2186 			snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
2187 			    ethno++);
2188 		else
2189 			strlcpy(ifr.ifr_name, ifp->if_xname, LINUX_IFNAMSIZ);
2190 
2191 		/* Walk the address list */
2192 		CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2193 			struct sockaddr *sa = ifa->ifa_addr;
2194 
2195 			if (sa->sa_family == AF_INET) {
2196 				ifr.ifr_addr.sa_family = LINUX_AF_INET;
2197 				memcpy(ifr.ifr_addr.sa_data, sa->sa_data,
2198 				    sizeof(ifr.ifr_addr.sa_data));
2199 				sbuf_bcat(sb, &ifr, sizeof(ifr));
2200 				max_len += sizeof(ifr);
2201 				addrs++;
2202 			}
2203 
2204 			if (sbuf_error(sb) == 0)
2205 				valid_len = sbuf_len(sb);
2206 		}
2207 		if (addrs == 0) {
2208 			bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
2209 			sbuf_bcat(sb, &ifr, sizeof(ifr));
2210 			max_len += sizeof(ifr);
2211 
2212 			if (sbuf_error(sb) == 0)
2213 				valid_len = sbuf_len(sb);
2214 		}
2215 	}
2216 	IFNET_RUNLOCK();
2217 
2218 	if (valid_len != max_len && !full) {
2219 		sbuf_delete(sb);
2220 		goto again;
2221 	}
2222 
2223 	ifc.ifc_len = valid_len;
2224 	sbuf_finish(sb);
2225 	error = copyout(sbuf_data(sb), PTRIN(ifc.ifc_buf), ifc.ifc_len);
2226 	if (error == 0)
2227 		error = copyout(&ifc, uifc, sizeof(ifc));
2228 	sbuf_delete(sb);
2229 	CURVNET_RESTORE();
2230 
2231 	return (error);
2232 }
2233 
2234 static int
2235 linux_gifflags(struct thread *td, struct ifnet *ifp, struct l_ifreq *ifr)
2236 {
2237 	l_short flags;
2238 
2239 	linux_ifflags(ifp, &flags);
2240 
2241 	return (copyout(&flags, &ifr->ifr_flags, sizeof(flags)));
2242 }
2243 
2244 static int
2245 linux_gifhwaddr(struct ifnet *ifp, struct l_ifreq *ifr)
2246 {
2247 	struct l_sockaddr lsa;
2248 
2249 	if (linux_ifhwaddr(ifp, &lsa) != 0)
2250 		return (ENOENT);
2251 
2252 	return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
2253 }
2254 
2255 
2256  /*
2257 * If we fault in bsd_to_linux_ifreq() then we will fault when we call
2258 * the native ioctl().  Thus, we don't really need to check the return
2259 * value of this function.
2260 */
2261 static int
2262 bsd_to_linux_ifreq(struct ifreq *arg)
2263 {
2264 	struct ifreq ifr;
2265 	size_t ifr_len = sizeof(struct ifreq);
2266 	int error;
2267 
2268 	if ((error = copyin(arg, &ifr, ifr_len)))
2269 		return (error);
2270 
2271 	*(u_short *)&ifr.ifr_addr = ifr.ifr_addr.sa_family;
2272 
2273 	error = copyout(&ifr, arg, ifr_len);
2274 
2275 	return (error);
2276 }
2277 
2278 /*
2279  * Socket related ioctls
2280  */
2281 
2282 static int
2283 linux_ioctl_socket(struct thread *td, struct linux_ioctl_args *args)
2284 {
2285 	char lifname[LINUX_IFNAMSIZ], ifname[IFNAMSIZ];
2286 	struct ifnet *ifp;
2287 	struct file *fp;
2288 	int error, type;
2289 
2290 	ifp = NULL;
2291 	error = 0;
2292 
2293 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
2294 	if (error != 0)
2295 		return (error);
2296 	type = fp->f_type;
2297 	fdrop(fp, td);
2298 	if (type != DTYPE_SOCKET) {
2299 		/* not a socket - probably a tap / vmnet device */
2300 		switch (args->cmd) {
2301 		case LINUX_SIOCGIFADDR:
2302 		case LINUX_SIOCSIFADDR:
2303 		case LINUX_SIOCGIFFLAGS:
2304 			return (linux_ioctl_special(td, args));
2305 		default:
2306 			return (ENOIOCTL);
2307 		}
2308 	}
2309 
2310 	switch (args->cmd & 0xffff) {
2311 
2312 	case LINUX_FIOGETOWN:
2313 	case LINUX_FIOSETOWN:
2314 	case LINUX_SIOCADDMULTI:
2315 	case LINUX_SIOCATMARK:
2316 	case LINUX_SIOCDELMULTI:
2317 	case LINUX_SIOCGIFNAME:
2318 	case LINUX_SIOCGIFCONF:
2319 	case LINUX_SIOCGPGRP:
2320 	case LINUX_SIOCSPGRP:
2321 	case LINUX_SIOCGIFCOUNT:
2322 		/* these ioctls don't take an interface name */
2323 		break;
2324 
2325 	case LINUX_SIOCGIFFLAGS:
2326 	case LINUX_SIOCGIFADDR:
2327 	case LINUX_SIOCSIFADDR:
2328 	case LINUX_SIOCGIFDSTADDR:
2329 	case LINUX_SIOCGIFBRDADDR:
2330 	case LINUX_SIOCGIFNETMASK:
2331 	case LINUX_SIOCSIFNETMASK:
2332 	case LINUX_SIOCGIFMTU:
2333 	case LINUX_SIOCSIFMTU:
2334 	case LINUX_SIOCSIFNAME:
2335 	case LINUX_SIOCGIFHWADDR:
2336 	case LINUX_SIOCSIFHWADDR:
2337 	case LINUX_SIOCDEVPRIVATE:
2338 	case LINUX_SIOCDEVPRIVATE+1:
2339 	case LINUX_SIOCGIFINDEX:
2340 		/* copy in the interface name and translate it. */
2341 		error = copyin((void *)args->arg, lifname, LINUX_IFNAMSIZ);
2342 		if (error != 0)
2343 			return (error);
2344 		memset(ifname, 0, sizeof(ifname));
2345 		ifp = ifname_linux_to_bsd(td, lifname, ifname);
2346 		if (ifp == NULL)
2347 			return (EINVAL);
2348 		/*
2349 		 * We need to copy it back out in case we pass the
2350 		 * request on to our native ioctl(), which will expect
2351 		 * the ifreq to be in user space and have the correct
2352 		 * interface name.
2353 		 */
2354 		error = copyout(ifname, (void *)args->arg, IFNAMSIZ);
2355 		if (error != 0)
2356 			return (error);
2357 		break;
2358 
2359 	default:
2360 		return (ENOIOCTL);
2361 	}
2362 
2363 	switch (args->cmd & 0xffff) {
2364 
2365 	case LINUX_FIOSETOWN:
2366 		args->cmd = FIOSETOWN;
2367 		error = sys_ioctl(td, (struct ioctl_args *)args);
2368 		break;
2369 
2370 	case LINUX_SIOCSPGRP:
2371 		args->cmd = SIOCSPGRP;
2372 		error = sys_ioctl(td, (struct ioctl_args *)args);
2373 		break;
2374 
2375 	case LINUX_FIOGETOWN:
2376 		args->cmd = FIOGETOWN;
2377 		error = sys_ioctl(td, (struct ioctl_args *)args);
2378 		break;
2379 
2380 	case LINUX_SIOCGPGRP:
2381 		args->cmd = SIOCGPGRP;
2382 		error = sys_ioctl(td, (struct ioctl_args *)args);
2383 		break;
2384 
2385 	case LINUX_SIOCATMARK:
2386 		args->cmd = SIOCATMARK;
2387 		error = sys_ioctl(td, (struct ioctl_args *)args);
2388 		break;
2389 
2390 	/* LINUX_SIOCGSTAMP */
2391 
2392 	case LINUX_SIOCGIFNAME:
2393 		error = linux_ioctl_ifname(td, (struct l_ifreq *)args->arg);
2394 		break;
2395 
2396 	case LINUX_SIOCGIFCONF:
2397 		error = linux_ifconf(td, (struct ifconf *)args->arg);
2398 		break;
2399 
2400 	case LINUX_SIOCGIFFLAGS:
2401 		args->cmd = SIOCGIFFLAGS;
2402 		error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
2403 		break;
2404 
2405 	case LINUX_SIOCGIFADDR:
2406 		args->cmd = SIOCGIFADDR;
2407 		error = sys_ioctl(td, (struct ioctl_args *)args);
2408 		bsd_to_linux_ifreq((struct ifreq *)args->arg);
2409 		break;
2410 
2411 	case LINUX_SIOCSIFADDR:
2412 		/* XXX probably doesn't work, included for completeness */
2413 		args->cmd = SIOCSIFADDR;
2414 		error = sys_ioctl(td, (struct ioctl_args *)args);
2415 		break;
2416 
2417 	case LINUX_SIOCGIFDSTADDR:
2418 		args->cmd = SIOCGIFDSTADDR;
2419 		error = sys_ioctl(td, (struct ioctl_args *)args);
2420 		bsd_to_linux_ifreq((struct ifreq *)args->arg);
2421 		break;
2422 
2423 	case LINUX_SIOCGIFBRDADDR:
2424 		args->cmd = SIOCGIFBRDADDR;
2425 		error = sys_ioctl(td, (struct ioctl_args *)args);
2426 		bsd_to_linux_ifreq((struct ifreq *)args->arg);
2427 		break;
2428 
2429 	case LINUX_SIOCGIFNETMASK:
2430 		args->cmd = SIOCGIFNETMASK;
2431 		error = sys_ioctl(td, (struct ioctl_args *)args);
2432 		bsd_to_linux_ifreq((struct ifreq *)args->arg);
2433 		break;
2434 
2435 	case LINUX_SIOCSIFNETMASK:
2436 		error = ENOIOCTL;
2437 		break;
2438 
2439 	case LINUX_SIOCGIFMTU:
2440 		args->cmd = SIOCGIFMTU;
2441 		error = sys_ioctl(td, (struct ioctl_args *)args);
2442 		break;
2443 
2444 	case LINUX_SIOCSIFMTU:
2445 		args->cmd = SIOCSIFMTU;
2446 		error = sys_ioctl(td, (struct ioctl_args *)args);
2447 		break;
2448 
2449 	case LINUX_SIOCSIFNAME:
2450 		error = ENOIOCTL;
2451 		break;
2452 
2453 	case LINUX_SIOCGIFHWADDR:
2454 		error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
2455 		break;
2456 
2457 	case LINUX_SIOCSIFHWADDR:
2458 		error = ENOIOCTL;
2459 		break;
2460 
2461 	case LINUX_SIOCADDMULTI:
2462 		args->cmd = SIOCADDMULTI;
2463 		error = sys_ioctl(td, (struct ioctl_args *)args);
2464 		break;
2465 
2466 	case LINUX_SIOCDELMULTI:
2467 		args->cmd = SIOCDELMULTI;
2468 		error = sys_ioctl(td, (struct ioctl_args *)args);
2469 		break;
2470 
2471 	case LINUX_SIOCGIFINDEX:
2472 		args->cmd = SIOCGIFINDEX;
2473 		error = sys_ioctl(td, (struct ioctl_args *)args);
2474 		break;
2475 
2476 	case LINUX_SIOCGIFCOUNT:
2477 		error = 0;
2478 		break;
2479 
2480 	/*
2481 	 * XXX This is slightly bogus, but these ioctls are currently
2482 	 * XXX only used by the aironet (if_an) network driver.
2483 	 */
2484 	case LINUX_SIOCDEVPRIVATE:
2485 		args->cmd = SIOCGPRIVATE_0;
2486 		error = sys_ioctl(td, (struct ioctl_args *)args);
2487 		break;
2488 
2489 	case LINUX_SIOCDEVPRIVATE+1:
2490 		args->cmd = SIOCGPRIVATE_1;
2491 		error = sys_ioctl(td, (struct ioctl_args *)args);
2492 		break;
2493 	}
2494 
2495 	if (ifp != NULL)
2496 		/* restore the original interface name */
2497 		copyout(lifname, (void *)args->arg, LINUX_IFNAMSIZ);
2498 
2499 	return (error);
2500 }
2501 
2502 /*
2503  * Device private ioctl handler
2504  */
2505 static int
2506 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
2507 {
2508 	struct file *fp;
2509 	int error, type;
2510 
2511 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
2512 	if (error != 0)
2513 		return (error);
2514 	type = fp->f_type;
2515 	fdrop(fp, td);
2516 	if (type == DTYPE_SOCKET)
2517 		return (linux_ioctl_socket(td, args));
2518 	return (ENOIOCTL);
2519 }
2520 
2521 /*
2522  * DRM ioctl handler (sys/dev/drm)
2523  */
2524 static int
2525 linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
2526 {
2527 	args->cmd = SETDIR(args->cmd);
2528 	return (sys_ioctl(td, (struct ioctl_args *)args));
2529 }
2530 
2531 #ifdef COMPAT_LINUX32
2532 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
2533 #define PTRIN_CP(src,dst,fld) \
2534 	do { (dst).fld = PTRIN((src).fld); } while (0)
2535 #define PTROUT_CP(src,dst,fld) \
2536 	do { (dst).fld = PTROUT((src).fld); } while (0)
2537 
2538 static int
2539 linux_ioctl_sg_io(struct thread *td, struct linux_ioctl_args *args)
2540 {
2541 	struct sg_io_hdr io;
2542 	struct sg_io_hdr32 io32;
2543 	struct file *fp;
2544 	int error;
2545 
2546 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
2547 	if (error != 0) {
2548 		printf("sg_linux_ioctl: fget returned %d\n", error);
2549 		return (error);
2550 	}
2551 
2552 	if ((error = copyin((void *)args->arg, &io32, sizeof(io32))) != 0)
2553 		goto out;
2554 
2555 	CP(io32, io, interface_id);
2556 	CP(io32, io, dxfer_direction);
2557 	CP(io32, io, cmd_len);
2558 	CP(io32, io, mx_sb_len);
2559 	CP(io32, io, iovec_count);
2560 	CP(io32, io, dxfer_len);
2561 	PTRIN_CP(io32, io, dxferp);
2562 	PTRIN_CP(io32, io, cmdp);
2563 	PTRIN_CP(io32, io, sbp);
2564 	CP(io32, io, timeout);
2565 	CP(io32, io, flags);
2566 	CP(io32, io, pack_id);
2567 	PTRIN_CP(io32, io, usr_ptr);
2568 	CP(io32, io, status);
2569 	CP(io32, io, masked_status);
2570 	CP(io32, io, msg_status);
2571 	CP(io32, io, sb_len_wr);
2572 	CP(io32, io, host_status);
2573 	CP(io32, io, driver_status);
2574 	CP(io32, io, resid);
2575 	CP(io32, io, duration);
2576 	CP(io32, io, info);
2577 
2578 	if ((error = fo_ioctl(fp, SG_IO, (caddr_t)&io, td->td_ucred, td)) != 0)
2579 		goto out;
2580 
2581 	CP(io, io32, interface_id);
2582 	CP(io, io32, dxfer_direction);
2583 	CP(io, io32, cmd_len);
2584 	CP(io, io32, mx_sb_len);
2585 	CP(io, io32, iovec_count);
2586 	CP(io, io32, dxfer_len);
2587 	PTROUT_CP(io, io32, dxferp);
2588 	PTROUT_CP(io, io32, cmdp);
2589 	PTROUT_CP(io, io32, sbp);
2590 	CP(io, io32, timeout);
2591 	CP(io, io32, flags);
2592 	CP(io, io32, pack_id);
2593 	PTROUT_CP(io, io32, usr_ptr);
2594 	CP(io, io32, status);
2595 	CP(io, io32, masked_status);
2596 	CP(io, io32, msg_status);
2597 	CP(io, io32, sb_len_wr);
2598 	CP(io, io32, host_status);
2599 	CP(io, io32, driver_status);
2600 	CP(io, io32, resid);
2601 	CP(io, io32, duration);
2602 	CP(io, io32, info);
2603 
2604 	error = copyout(&io32, (void *)args->arg, sizeof(io32));
2605 
2606 out:
2607 	fdrop(fp, td);
2608 	return (error);
2609 }
2610 #endif
2611 
2612 static int
2613 linux_ioctl_sg(struct thread *td, struct linux_ioctl_args *args)
2614 {
2615 
2616 	switch (args->cmd) {
2617 	case LINUX_SG_GET_VERSION_NUM:
2618 		args->cmd = SG_GET_VERSION_NUM;
2619 		break;
2620 	case LINUX_SG_SET_TIMEOUT:
2621 		args->cmd = SG_SET_TIMEOUT;
2622 		break;
2623 	case LINUX_SG_GET_TIMEOUT:
2624 		args->cmd = SG_GET_TIMEOUT;
2625 		break;
2626 	case LINUX_SG_IO:
2627 		args->cmd = SG_IO;
2628 #ifdef COMPAT_LINUX32
2629 		return (linux_ioctl_sg_io(td, args));
2630 #endif
2631 		break;
2632 	case LINUX_SG_GET_RESERVED_SIZE:
2633 		args->cmd = SG_GET_RESERVED_SIZE;
2634 		break;
2635 	case LINUX_SG_GET_SCSI_ID:
2636 		args->cmd = SG_GET_SCSI_ID;
2637 		break;
2638 	case LINUX_SG_GET_SG_TABLESIZE:
2639 		args->cmd = SG_GET_SG_TABLESIZE;
2640 		break;
2641 	default:
2642 		return (ENODEV);
2643 	}
2644 	return (sys_ioctl(td, (struct ioctl_args *)args));
2645 }
2646 
2647 /*
2648  * Video4Linux (V4L) ioctl handler
2649  */
2650 static int
2651 linux_to_bsd_v4l_tuner(struct l_video_tuner *lvt, struct video_tuner *vt)
2652 {
2653 	vt->tuner = lvt->tuner;
2654 	strlcpy(vt->name, lvt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
2655 	vt->rangelow = lvt->rangelow;	/* possible long size conversion */
2656 	vt->rangehigh = lvt->rangehigh;	/* possible long size conversion */
2657 	vt->flags = lvt->flags;
2658 	vt->mode = lvt->mode;
2659 	vt->signal = lvt->signal;
2660 	return (0);
2661 }
2662 
2663 static int
2664 bsd_to_linux_v4l_tuner(struct video_tuner *vt, struct l_video_tuner *lvt)
2665 {
2666 	lvt->tuner = vt->tuner;
2667 	strlcpy(lvt->name, vt->name, LINUX_VIDEO_TUNER_NAME_SIZE);
2668 	lvt->rangelow = vt->rangelow;	/* possible long size conversion */
2669 	lvt->rangehigh = vt->rangehigh;	/* possible long size conversion */
2670 	lvt->flags = vt->flags;
2671 	lvt->mode = vt->mode;
2672 	lvt->signal = vt->signal;
2673 	return (0);
2674 }
2675 
2676 #ifdef COMPAT_LINUX_V4L_CLIPLIST
2677 static int
2678 linux_to_bsd_v4l_clip(struct l_video_clip *lvc, struct video_clip *vc)
2679 {
2680 	vc->x = lvc->x;
2681 	vc->y = lvc->y;
2682 	vc->width = lvc->width;
2683 	vc->height = lvc->height;
2684 	vc->next = PTRIN(lvc->next);	/* possible pointer size conversion */
2685 	return (0);
2686 }
2687 #endif
2688 
2689 static int
2690 linux_to_bsd_v4l_window(struct l_video_window *lvw, struct video_window *vw)
2691 {
2692 	vw->x = lvw->x;
2693 	vw->y = lvw->y;
2694 	vw->width = lvw->width;
2695 	vw->height = lvw->height;
2696 	vw->chromakey = lvw->chromakey;
2697 	vw->flags = lvw->flags;
2698 	vw->clips = PTRIN(lvw->clips);	/* possible pointer size conversion */
2699 	vw->clipcount = lvw->clipcount;
2700 	return (0);
2701 }
2702 
2703 static int
2704 bsd_to_linux_v4l_window(struct video_window *vw, struct l_video_window *lvw)
2705 {
2706 	memset(lvw, 0, sizeof(*lvw));
2707 
2708 	lvw->x = vw->x;
2709 	lvw->y = vw->y;
2710 	lvw->width = vw->width;
2711 	lvw->height = vw->height;
2712 	lvw->chromakey = vw->chromakey;
2713 	lvw->flags = vw->flags;
2714 	lvw->clips = PTROUT(vw->clips);	/* possible pointer size conversion */
2715 	lvw->clipcount = vw->clipcount;
2716 	return (0);
2717 }
2718 
2719 static int
2720 linux_to_bsd_v4l_buffer(struct l_video_buffer *lvb, struct video_buffer *vb)
2721 {
2722 	vb->base = PTRIN(lvb->base);	/* possible pointer size conversion */
2723 	vb->height = lvb->height;
2724 	vb->width = lvb->width;
2725 	vb->depth = lvb->depth;
2726 	vb->bytesperline = lvb->bytesperline;
2727 	return (0);
2728 }
2729 
2730 static int
2731 bsd_to_linux_v4l_buffer(struct video_buffer *vb, struct l_video_buffer *lvb)
2732 {
2733 	lvb->base = PTROUT(vb->base);	/* possible pointer size conversion */
2734 	lvb->height = vb->height;
2735 	lvb->width = vb->width;
2736 	lvb->depth = vb->depth;
2737 	lvb->bytesperline = vb->bytesperline;
2738 	return (0);
2739 }
2740 
2741 static int
2742 linux_to_bsd_v4l_code(struct l_video_code *lvc, struct video_code *vc)
2743 {
2744 	strlcpy(vc->loadwhat, lvc->loadwhat, LINUX_VIDEO_CODE_LOADWHAT_SIZE);
2745 	vc->datasize = lvc->datasize;
2746 	vc->data = PTRIN(lvc->data);	/* possible pointer size conversion */
2747 	return (0);
2748 }
2749 
2750 #ifdef COMPAT_LINUX_V4L_CLIPLIST
2751 static int
2752 linux_v4l_clip_copy(void *lvc, struct video_clip **ppvc)
2753 {
2754 	int error;
2755 	struct video_clip vclip;
2756 	struct l_video_clip l_vclip;
2757 
2758 	error = copyin(lvc, &l_vclip, sizeof(l_vclip));
2759 	if (error) return (error);
2760 	linux_to_bsd_v4l_clip(&l_vclip, &vclip);
2761 	/* XXX: If there can be no concurrency: s/M_NOWAIT/M_WAITOK/ */
2762 	if ((*ppvc = malloc(sizeof(**ppvc), M_LINUX, M_NOWAIT)) == NULL)
2763 		return (ENOMEM);    /* XXX: Linux has no ENOMEM here. */
2764 	memcpy(*ppvc, &vclip, sizeof(vclip));
2765 	(*ppvc)->next = NULL;
2766 	return (0);
2767 }
2768 
2769 static int
2770 linux_v4l_cliplist_free(struct video_window *vw)
2771 {
2772 	struct video_clip **ppvc;
2773 	struct video_clip **ppvc_next;
2774 
2775 	for (ppvc = &(vw->clips); *ppvc != NULL; ppvc = ppvc_next) {
2776 		ppvc_next = &((*ppvc)->next);
2777 		free(*ppvc, M_LINUX);
2778 	}
2779 	vw->clips = NULL;
2780 
2781 	return (0);
2782 }
2783 
2784 static int
2785 linux_v4l_cliplist_copy(struct l_video_window *lvw, struct video_window *vw)
2786 {
2787 	int error;
2788 	int clipcount;
2789 	void *plvc;
2790 	struct video_clip **ppvc;
2791 
2792 	/*
2793 	 * XXX: The cliplist is used to pass in a list of clipping
2794 	 *	rectangles or, if clipcount == VIDEO_CLIP_BITMAP, a
2795 	 *	clipping bitmap.  Some Linux apps, however, appear to
2796 	 *	leave cliplist and clips uninitialized.  In any case,
2797 	 *	the cliplist is not used by pwc(4), at the time of
2798 	 *	writing, FreeBSD's only V4L driver.  When a driver
2799 	 *	that uses the cliplist is developed, this code may
2800 	 *	need re-examiniation.
2801 	 */
2802 	error = 0;
2803 	clipcount = vw->clipcount;
2804 	if (clipcount == VIDEO_CLIP_BITMAP) {
2805 		/*
2806 		 * In this case, the pointer (clips) is overloaded
2807 		 * to be a "void *" to a bitmap, therefore there
2808 		 * is no struct video_clip to copy now.
2809 		 */
2810 	} else if (clipcount > 0 && clipcount <= 16384) {
2811 		/*
2812 		 * Clips points to list of clip rectangles, so
2813 		 * copy the list.
2814 		 *
2815 		 * XXX: Upper limit of 16384 was used here to try to
2816 		 *	avoid cases when clipcount and clips pointer
2817 		 *	are uninitialized and therefore have high random
2818 		 *	values, as is the case in the Linux Skype
2819 		 *	application.  The value 16384 was chosen as that
2820 		 *	is what is used in the Linux stradis(4) MPEG
2821 		 *	decoder driver, the only place we found an
2822 		 *	example of cliplist use.
2823 		 */
2824 		plvc = PTRIN(lvw->clips);
2825 		vw->clips = NULL;
2826 		ppvc = &(vw->clips);
2827 		while (clipcount-- > 0) {
2828 			if (plvc == NULL) {
2829 				error = EFAULT;
2830 				break;
2831 			} else {
2832 				error = linux_v4l_clip_copy(plvc, ppvc);
2833 				if (error) {
2834 					linux_v4l_cliplist_free(vw);
2835 					break;
2836 				}
2837 			}
2838 			ppvc = &((*ppvc)->next);
2839 			plvc = PTRIN(((struct l_video_clip *) plvc)->next);
2840 		}
2841 	} else {
2842 		/*
2843 		 * clipcount == 0 or negative (but not VIDEO_CLIP_BITMAP)
2844 		 * Force cliplist to null.
2845 		 */
2846 		vw->clipcount = 0;
2847 		vw->clips = NULL;
2848 	}
2849 	return (error);
2850 }
2851 #endif
2852 
2853 static int
2854 linux_ioctl_v4l(struct thread *td, struct linux_ioctl_args *args)
2855 {
2856 	struct file *fp;
2857 	int error;
2858 	struct video_tuner vtun;
2859 	struct video_window vwin;
2860 	struct video_buffer vbuf;
2861 	struct video_code vcode;
2862 	struct l_video_tuner l_vtun;
2863 	struct l_video_window l_vwin;
2864 	struct l_video_buffer l_vbuf;
2865 	struct l_video_code l_vcode;
2866 
2867 	switch (args->cmd & 0xffff) {
2868 	case LINUX_VIDIOCGCAP:		args->cmd = VIDIOCGCAP; break;
2869 	case LINUX_VIDIOCGCHAN:		args->cmd = VIDIOCGCHAN; break;
2870 	case LINUX_VIDIOCSCHAN:		args->cmd = VIDIOCSCHAN; break;
2871 
2872 	case LINUX_VIDIOCGTUNER:
2873 		error = fget(td, args->fd,
2874 		    &cap_ioctl_rights, &fp);
2875 		if (error != 0)
2876 			return (error);
2877 		error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
2878 		if (error) {
2879 			fdrop(fp, td);
2880 			return (error);
2881 		}
2882 		linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
2883 		error = fo_ioctl(fp, VIDIOCGTUNER, &vtun, td->td_ucred, td);
2884 		if (!error) {
2885 			bsd_to_linux_v4l_tuner(&vtun, &l_vtun);
2886 			error = copyout(&l_vtun, (void *) args->arg,
2887 			    sizeof(l_vtun));
2888 		}
2889 		fdrop(fp, td);
2890 		return (error);
2891 
2892 	case LINUX_VIDIOCSTUNER:
2893 		error = fget(td, args->fd,
2894 		    &cap_ioctl_rights, &fp);
2895 		if (error != 0)
2896 			return (error);
2897 		error = copyin((void *) args->arg, &l_vtun, sizeof(l_vtun));
2898 		if (error) {
2899 			fdrop(fp, td);
2900 			return (error);
2901 		}
2902 		linux_to_bsd_v4l_tuner(&l_vtun, &vtun);
2903 		error = fo_ioctl(fp, VIDIOCSTUNER, &vtun, td->td_ucred, td);
2904 		fdrop(fp, td);
2905 		return (error);
2906 
2907 	case LINUX_VIDIOCGPICT:		args->cmd = VIDIOCGPICT; break;
2908 	case LINUX_VIDIOCSPICT:		args->cmd = VIDIOCSPICT; break;
2909 	case LINUX_VIDIOCCAPTURE:	args->cmd = VIDIOCCAPTURE; break;
2910 
2911 	case LINUX_VIDIOCGWIN:
2912 		error = fget(td, args->fd,
2913 		    &cap_ioctl_rights, &fp);
2914 		if (error != 0)
2915 			return (error);
2916 		error = fo_ioctl(fp, VIDIOCGWIN, &vwin, td->td_ucred, td);
2917 		if (!error) {
2918 			bsd_to_linux_v4l_window(&vwin, &l_vwin);
2919 			error = copyout(&l_vwin, (void *) args->arg,
2920 			    sizeof(l_vwin));
2921 		}
2922 		fdrop(fp, td);
2923 		return (error);
2924 
2925 	case LINUX_VIDIOCSWIN:
2926 		error = fget(td, args->fd,
2927 		    &cap_ioctl_rights, &fp);
2928 		if (error != 0)
2929 			return (error);
2930 		error = copyin((void *) args->arg, &l_vwin, sizeof(l_vwin));
2931 		if (error) {
2932 			fdrop(fp, td);
2933 			return (error);
2934 		}
2935 		linux_to_bsd_v4l_window(&l_vwin, &vwin);
2936 #ifdef COMPAT_LINUX_V4L_CLIPLIST
2937 		error = linux_v4l_cliplist_copy(&l_vwin, &vwin);
2938 		if (error) {
2939 			fdrop(fp, td);
2940 			return (error);
2941 		}
2942 #endif
2943 		error = fo_ioctl(fp, VIDIOCSWIN, &vwin, td->td_ucred, td);
2944 		fdrop(fp, td);
2945 #ifdef COMPAT_LINUX_V4L_CLIPLIST
2946 		linux_v4l_cliplist_free(&vwin);
2947 #endif
2948 		return (error);
2949 
2950 	case LINUX_VIDIOCGFBUF:
2951 		error = fget(td, args->fd,
2952 		    &cap_ioctl_rights, &fp);
2953 		if (error != 0)
2954 			return (error);
2955 		error = fo_ioctl(fp, VIDIOCGFBUF, &vbuf, td->td_ucred, td);
2956 		if (!error) {
2957 			bsd_to_linux_v4l_buffer(&vbuf, &l_vbuf);
2958 			error = copyout(&l_vbuf, (void *) args->arg,
2959 			    sizeof(l_vbuf));
2960 		}
2961 		fdrop(fp, td);
2962 		return (error);
2963 
2964 	case LINUX_VIDIOCSFBUF:
2965 		error = fget(td, args->fd,
2966 		    &cap_ioctl_rights, &fp);
2967 		if (error != 0)
2968 			return (error);
2969 		error = copyin((void *) args->arg, &l_vbuf, sizeof(l_vbuf));
2970 		if (error) {
2971 			fdrop(fp, td);
2972 			return (error);
2973 		}
2974 		linux_to_bsd_v4l_buffer(&l_vbuf, &vbuf);
2975 		error = fo_ioctl(fp, VIDIOCSFBUF, &vbuf, td->td_ucred, td);
2976 		fdrop(fp, td);
2977 		return (error);
2978 
2979 	case LINUX_VIDIOCKEY:		args->cmd = VIDIOCKEY; break;
2980 	case LINUX_VIDIOCGFREQ:		args->cmd = VIDIOCGFREQ; break;
2981 	case LINUX_VIDIOCSFREQ:		args->cmd = VIDIOCSFREQ; break;
2982 	case LINUX_VIDIOCGAUDIO:	args->cmd = VIDIOCGAUDIO; break;
2983 	case LINUX_VIDIOCSAUDIO:	args->cmd = VIDIOCSAUDIO; break;
2984 	case LINUX_VIDIOCSYNC:		args->cmd = VIDIOCSYNC; break;
2985 	case LINUX_VIDIOCMCAPTURE:	args->cmd = VIDIOCMCAPTURE; break;
2986 	case LINUX_VIDIOCGMBUF:		args->cmd = VIDIOCGMBUF; break;
2987 	case LINUX_VIDIOCGUNIT:		args->cmd = VIDIOCGUNIT; break;
2988 	case LINUX_VIDIOCGCAPTURE:	args->cmd = VIDIOCGCAPTURE; break;
2989 	case LINUX_VIDIOCSCAPTURE:	args->cmd = VIDIOCSCAPTURE; break;
2990 	case LINUX_VIDIOCSPLAYMODE:	args->cmd = VIDIOCSPLAYMODE; break;
2991 	case LINUX_VIDIOCSWRITEMODE:	args->cmd = VIDIOCSWRITEMODE; break;
2992 	case LINUX_VIDIOCGPLAYINFO:	args->cmd = VIDIOCGPLAYINFO; break;
2993 
2994 	case LINUX_VIDIOCSMICROCODE:
2995 		error = fget(td, args->fd,
2996 		    &cap_ioctl_rights, &fp);
2997 		if (error != 0)
2998 			return (error);
2999 		error = copyin((void *) args->arg, &l_vcode, sizeof(l_vcode));
3000 		if (error) {
3001 			fdrop(fp, td);
3002 			return (error);
3003 		}
3004 		linux_to_bsd_v4l_code(&l_vcode, &vcode);
3005 		error = fo_ioctl(fp, VIDIOCSMICROCODE, &vcode, td->td_ucred, td);
3006 		fdrop(fp, td);
3007 		return (error);
3008 
3009 	case LINUX_VIDIOCGVBIFMT:	args->cmd = VIDIOCGVBIFMT; break;
3010 	case LINUX_VIDIOCSVBIFMT:	args->cmd = VIDIOCSVBIFMT; break;
3011 	default:			return (ENOIOCTL);
3012 	}
3013 
3014 	error = sys_ioctl(td, (struct ioctl_args *)args);
3015 	return (error);
3016 }
3017 
3018 /*
3019  * Special ioctl handler
3020  */
3021 static int
3022 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
3023 {
3024 	int error;
3025 
3026 	switch (args->cmd) {
3027 	case LINUX_SIOCGIFADDR:
3028 		args->cmd = SIOCGIFADDR;
3029 		error = sys_ioctl(td, (struct ioctl_args *)args);
3030 		break;
3031 	case LINUX_SIOCSIFADDR:
3032 		args->cmd = SIOCSIFADDR;
3033 		error = sys_ioctl(td, (struct ioctl_args *)args);
3034 		break;
3035 	case LINUX_SIOCGIFFLAGS:
3036 		args->cmd = SIOCGIFFLAGS;
3037 		error = sys_ioctl(td, (struct ioctl_args *)args);
3038 		break;
3039 	default:
3040 		error = ENOIOCTL;
3041 	}
3042 
3043 	return (error);
3044 }
3045 
3046 static int
3047 linux_to_bsd_v4l2_standard(struct l_v4l2_standard *lvstd, struct v4l2_standard *vstd)
3048 {
3049 	vstd->index = lvstd->index;
3050 	vstd->id = lvstd->id;
3051 	CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
3052 	memcpy(vstd->name, lvstd->name, sizeof(vstd->name));
3053 	vstd->frameperiod = lvstd->frameperiod;
3054 	vstd->framelines = lvstd->framelines;
3055 	CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
3056 	memcpy(vstd->reserved, lvstd->reserved, sizeof(vstd->reserved));
3057 	return (0);
3058 }
3059 
3060 static int
3061 bsd_to_linux_v4l2_standard(struct v4l2_standard *vstd, struct l_v4l2_standard *lvstd)
3062 {
3063 	lvstd->index = vstd->index;
3064 	lvstd->id = vstd->id;
3065 	CTASSERT(sizeof(vstd->name) == sizeof(lvstd->name));
3066 	memcpy(lvstd->name, vstd->name, sizeof(lvstd->name));
3067 	lvstd->frameperiod = vstd->frameperiod;
3068 	lvstd->framelines = vstd->framelines;
3069 	CTASSERT(sizeof(vstd->reserved) == sizeof(lvstd->reserved));
3070 	memcpy(lvstd->reserved, vstd->reserved, sizeof(lvstd->reserved));
3071 	return (0);
3072 }
3073 
3074 static int
3075 linux_to_bsd_v4l2_buffer(struct l_v4l2_buffer *lvb, struct v4l2_buffer *vb)
3076 {
3077 	vb->index = lvb->index;
3078 	vb->type = lvb->type;
3079 	vb->bytesused = lvb->bytesused;
3080 	vb->flags = lvb->flags;
3081 	vb->field = lvb->field;
3082 	vb->timestamp.tv_sec = lvb->timestamp.tv_sec;
3083 	vb->timestamp.tv_usec = lvb->timestamp.tv_usec;
3084 	memcpy(&vb->timecode, &lvb->timecode, sizeof (lvb->timecode));
3085 	vb->sequence = lvb->sequence;
3086 	vb->memory = lvb->memory;
3087 	if (lvb->memory == V4L2_MEMORY_USERPTR)
3088 		/* possible pointer size conversion */
3089 		vb->m.userptr = (unsigned long)PTRIN(lvb->m.userptr);
3090 	else
3091 		vb->m.offset = lvb->m.offset;
3092 	vb->length = lvb->length;
3093 	vb->input = lvb->input;
3094 	vb->reserved = lvb->reserved;
3095 	return (0);
3096 }
3097 
3098 static int
3099 bsd_to_linux_v4l2_buffer(struct v4l2_buffer *vb, struct l_v4l2_buffer *lvb)
3100 {
3101 	lvb->index = vb->index;
3102 	lvb->type = vb->type;
3103 	lvb->bytesused = vb->bytesused;
3104 	lvb->flags = vb->flags;
3105 	lvb->field = vb->field;
3106 	lvb->timestamp.tv_sec = vb->timestamp.tv_sec;
3107 	lvb->timestamp.tv_usec = vb->timestamp.tv_usec;
3108 	memcpy(&lvb->timecode, &vb->timecode, sizeof (vb->timecode));
3109 	lvb->sequence = vb->sequence;
3110 	lvb->memory = vb->memory;
3111 	if (vb->memory == V4L2_MEMORY_USERPTR)
3112 		/* possible pointer size conversion */
3113 		lvb->m.userptr = PTROUT(vb->m.userptr);
3114 	else
3115 		lvb->m.offset = vb->m.offset;
3116 	lvb->length = vb->length;
3117 	lvb->input = vb->input;
3118 	lvb->reserved = vb->reserved;
3119 	return (0);
3120 }
3121 
3122 static int
3123 linux_to_bsd_v4l2_format(struct l_v4l2_format *lvf, struct v4l2_format *vf)
3124 {
3125 	vf->type = lvf->type;
3126 	if (lvf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
3127 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
3128 	    || lvf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
3129 #endif
3130 	    )
3131 		/*
3132 		 * XXX TODO - needs 32 -> 64 bit conversion:
3133 		 * (unused by webcams?)
3134 		 */
3135 		return (EINVAL);
3136 	memcpy(&vf->fmt, &lvf->fmt, sizeof(vf->fmt));
3137 	return (0);
3138 }
3139 
3140 static int
3141 bsd_to_linux_v4l2_format(struct v4l2_format *vf, struct l_v4l2_format *lvf)
3142 {
3143 	lvf->type = vf->type;
3144 	if (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY
3145 #ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
3146 	    || vf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
3147 #endif
3148 	    )
3149 		/*
3150 		 * XXX TODO - needs 32 -> 64 bit conversion:
3151 		 * (unused by webcams?)
3152 		 */
3153 		return (EINVAL);
3154 	memcpy(&lvf->fmt, &vf->fmt, sizeof(vf->fmt));
3155 	return (0);
3156 }
3157 static int
3158 linux_ioctl_v4l2(struct thread *td, struct linux_ioctl_args *args)
3159 {
3160 	struct file *fp;
3161 	int error;
3162 	struct v4l2_format vformat;
3163 	struct l_v4l2_format l_vformat;
3164 	struct v4l2_standard vstd;
3165 	struct l_v4l2_standard l_vstd;
3166 	struct l_v4l2_buffer l_vbuf;
3167 	struct v4l2_buffer vbuf;
3168 	struct v4l2_input vinp;
3169 
3170 	switch (args->cmd & 0xffff) {
3171 	case LINUX_VIDIOC_RESERVED:
3172 	case LINUX_VIDIOC_LOG_STATUS:
3173 		if ((args->cmd & IOC_DIRMASK) != LINUX_IOC_VOID)
3174 			return (ENOIOCTL);
3175 		args->cmd = (args->cmd & 0xffff) | IOC_VOID;
3176 		break;
3177 
3178 	case LINUX_VIDIOC_OVERLAY:
3179 	case LINUX_VIDIOC_STREAMON:
3180 	case LINUX_VIDIOC_STREAMOFF:
3181 	case LINUX_VIDIOC_S_STD:
3182 	case LINUX_VIDIOC_S_TUNER:
3183 	case LINUX_VIDIOC_S_AUDIO:
3184 	case LINUX_VIDIOC_S_AUDOUT:
3185 	case LINUX_VIDIOC_S_MODULATOR:
3186 	case LINUX_VIDIOC_S_FREQUENCY:
3187 	case LINUX_VIDIOC_S_CROP:
3188 	case LINUX_VIDIOC_S_JPEGCOMP:
3189 	case LINUX_VIDIOC_S_PRIORITY:
3190 	case LINUX_VIDIOC_DBG_S_REGISTER:
3191 	case LINUX_VIDIOC_S_HW_FREQ_SEEK:
3192 	case LINUX_VIDIOC_SUBSCRIBE_EVENT:
3193 	case LINUX_VIDIOC_UNSUBSCRIBE_EVENT:
3194 		args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_IN;
3195 		break;
3196 
3197 	case LINUX_VIDIOC_QUERYCAP:
3198 	case LINUX_VIDIOC_G_STD:
3199 	case LINUX_VIDIOC_G_AUDIO:
3200 	case LINUX_VIDIOC_G_INPUT:
3201 	case LINUX_VIDIOC_G_OUTPUT:
3202 	case LINUX_VIDIOC_G_AUDOUT:
3203 	case LINUX_VIDIOC_G_JPEGCOMP:
3204 	case LINUX_VIDIOC_QUERYSTD:
3205 	case LINUX_VIDIOC_G_PRIORITY:
3206 	case LINUX_VIDIOC_QUERY_DV_PRESET:
3207 		args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_OUT;
3208 		break;
3209 
3210 	case LINUX_VIDIOC_ENUM_FMT:
3211 	case LINUX_VIDIOC_REQBUFS:
3212 	case LINUX_VIDIOC_G_PARM:
3213 	case LINUX_VIDIOC_S_PARM:
3214 	case LINUX_VIDIOC_G_CTRL:
3215 	case LINUX_VIDIOC_S_CTRL:
3216 	case LINUX_VIDIOC_G_TUNER:
3217 	case LINUX_VIDIOC_QUERYCTRL:
3218 	case LINUX_VIDIOC_QUERYMENU:
3219 	case LINUX_VIDIOC_S_INPUT:
3220 	case LINUX_VIDIOC_S_OUTPUT:
3221 	case LINUX_VIDIOC_ENUMOUTPUT:
3222 	case LINUX_VIDIOC_G_MODULATOR:
3223 	case LINUX_VIDIOC_G_FREQUENCY:
3224 	case LINUX_VIDIOC_CROPCAP:
3225 	case LINUX_VIDIOC_G_CROP:
3226 	case LINUX_VIDIOC_ENUMAUDIO:
3227 	case LINUX_VIDIOC_ENUMAUDOUT:
3228 	case LINUX_VIDIOC_G_SLICED_VBI_CAP:
3229 #ifdef VIDIOC_ENUM_FRAMESIZES
3230 	case LINUX_VIDIOC_ENUM_FRAMESIZES:
3231 	case LINUX_VIDIOC_ENUM_FRAMEINTERVALS:
3232 	case LINUX_VIDIOC_ENCODER_CMD:
3233 	case LINUX_VIDIOC_TRY_ENCODER_CMD:
3234 #endif
3235 	case LINUX_VIDIOC_DBG_G_REGISTER:
3236 	case LINUX_VIDIOC_DBG_G_CHIP_IDENT:
3237 	case LINUX_VIDIOC_ENUM_DV_PRESETS:
3238 	case LINUX_VIDIOC_S_DV_PRESET:
3239 	case LINUX_VIDIOC_G_DV_PRESET:
3240 	case LINUX_VIDIOC_S_DV_TIMINGS:
3241 	case LINUX_VIDIOC_G_DV_TIMINGS:
3242 		args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
3243 		break;
3244 
3245 	case LINUX_VIDIOC_G_FMT:
3246 	case LINUX_VIDIOC_S_FMT:
3247 	case LINUX_VIDIOC_TRY_FMT:
3248 		error = copyin((void *)args->arg, &l_vformat, sizeof(l_vformat));
3249 		if (error)
3250 			return (error);
3251 		error = fget(td, args->fd,
3252 		    &cap_ioctl_rights, &fp);
3253 		if (error)
3254 			return (error);
3255 		if (linux_to_bsd_v4l2_format(&l_vformat, &vformat) != 0)
3256 			error = EINVAL;
3257 		else if ((args->cmd & 0xffff) == LINUX_VIDIOC_G_FMT)
3258 			error = fo_ioctl(fp, VIDIOC_G_FMT, &vformat,
3259 			    td->td_ucred, td);
3260 		else if ((args->cmd & 0xffff) == LINUX_VIDIOC_S_FMT)
3261 			error = fo_ioctl(fp, VIDIOC_S_FMT, &vformat,
3262 			    td->td_ucred, td);
3263 		else
3264 			error = fo_ioctl(fp, VIDIOC_TRY_FMT, &vformat,
3265 			    td->td_ucred, td);
3266 		bsd_to_linux_v4l2_format(&vformat, &l_vformat);
3267 		copyout(&l_vformat, (void *)args->arg, sizeof(l_vformat));
3268 		fdrop(fp, td);
3269 		return (error);
3270 
3271 	case LINUX_VIDIOC_ENUMSTD:
3272 		error = copyin((void *)args->arg, &l_vstd, sizeof(l_vstd));
3273 		if (error)
3274 			return (error);
3275 		linux_to_bsd_v4l2_standard(&l_vstd, &vstd);
3276 		error = fget(td, args->fd,
3277 		    &cap_ioctl_rights, &fp);
3278 		if (error)
3279 			return (error);
3280 		error = fo_ioctl(fp, VIDIOC_ENUMSTD, (caddr_t)&vstd,
3281 		    td->td_ucred, td);
3282 		if (error) {
3283 			fdrop(fp, td);
3284 			return (error);
3285 		}
3286 		bsd_to_linux_v4l2_standard(&vstd, &l_vstd);
3287 		error = copyout(&l_vstd, (void *)args->arg, sizeof(l_vstd));
3288 		fdrop(fp, td);
3289 		return (error);
3290 
3291 	case LINUX_VIDIOC_ENUMINPUT:
3292 		/*
3293 		 * The Linux struct l_v4l2_input differs only in size,
3294 		 * it has no padding at the end.
3295 		 */
3296 		error = copyin((void *)args->arg, &vinp,
3297 				sizeof(struct l_v4l2_input));
3298 		if (error != 0)
3299 			return (error);
3300 		error = fget(td, args->fd,
3301 		    &cap_ioctl_rights, &fp);
3302 		if (error != 0)
3303 			return (error);
3304 		error = fo_ioctl(fp, VIDIOC_ENUMINPUT, (caddr_t)&vinp,
3305 		    td->td_ucred, td);
3306 		if (error) {
3307 			fdrop(fp, td);
3308 			return (error);
3309 		}
3310 		error = copyout(&vinp, (void *)args->arg,
3311 				sizeof(struct l_v4l2_input));
3312 		fdrop(fp, td);
3313 		return (error);
3314 
3315 	case LINUX_VIDIOC_QUERYBUF:
3316 	case LINUX_VIDIOC_QBUF:
3317 	case LINUX_VIDIOC_DQBUF:
3318 		error = copyin((void *)args->arg, &l_vbuf, sizeof(l_vbuf));
3319 		if (error)
3320 			return (error);
3321 		error = fget(td, args->fd,
3322 		    &cap_ioctl_rights, &fp);
3323 		if (error)
3324 			return (error);
3325 		linux_to_bsd_v4l2_buffer(&l_vbuf, &vbuf);
3326 		if ((args->cmd & 0xffff) == LINUX_VIDIOC_QUERYBUF)
3327 			error = fo_ioctl(fp, VIDIOC_QUERYBUF, &vbuf,
3328 			    td->td_ucred, td);
3329 		else if ((args->cmd & 0xffff) == LINUX_VIDIOC_QBUF)
3330 			error = fo_ioctl(fp, VIDIOC_QBUF, &vbuf,
3331 			    td->td_ucred, td);
3332 		else
3333 			error = fo_ioctl(fp, VIDIOC_DQBUF, &vbuf,
3334 			    td->td_ucred, td);
3335 		bsd_to_linux_v4l2_buffer(&vbuf, &l_vbuf);
3336 		copyout(&l_vbuf, (void *)args->arg, sizeof(l_vbuf));
3337 		fdrop(fp, td);
3338 		return (error);
3339 
3340 	/*
3341 	 * XXX TODO - these need 32 -> 64 bit conversion:
3342 	 * (are any of them needed for webcams?)
3343 	 */
3344 	case LINUX_VIDIOC_G_FBUF:
3345 	case LINUX_VIDIOC_S_FBUF:
3346 
3347 	case LINUX_VIDIOC_G_EXT_CTRLS:
3348 	case LINUX_VIDIOC_S_EXT_CTRLS:
3349 	case LINUX_VIDIOC_TRY_EXT_CTRLS:
3350 
3351 	case LINUX_VIDIOC_DQEVENT:
3352 
3353 	default:			return (ENOIOCTL);
3354 	}
3355 
3356 	error = sys_ioctl(td, (struct ioctl_args *)args);
3357 	return (error);
3358 }
3359 
3360 /*
3361  * Support for emulators/linux-libusb. This port uses FBSD_LUSB* macros
3362  * instead of USB* ones. This lets us to provide correct values for cmd.
3363  * 0xffffffe0 -- 0xffffffff range seemed to be the least collision-prone.
3364  */
3365 static int
3366 linux_ioctl_fbsd_usb(struct thread *td, struct linux_ioctl_args *args)
3367 {
3368 	int error;
3369 
3370 	error = 0;
3371 	switch (args->cmd) {
3372 	case FBSD_LUSB_DEVICEENUMERATE:
3373 		args->cmd = USB_DEVICEENUMERATE;
3374 		break;
3375 	case FBSD_LUSB_DEV_QUIRK_ADD:
3376 		args->cmd = USB_DEV_QUIRK_ADD;
3377 		break;
3378 	case FBSD_LUSB_DEV_QUIRK_GET:
3379 		args->cmd = USB_DEV_QUIRK_GET;
3380 		break;
3381 	case FBSD_LUSB_DEV_QUIRK_REMOVE:
3382 		args->cmd = USB_DEV_QUIRK_REMOVE;
3383 		break;
3384 	case FBSD_LUSB_DO_REQUEST:
3385 		args->cmd = USB_DO_REQUEST;
3386 		break;
3387 	case FBSD_LUSB_FS_CLEAR_STALL_SYNC:
3388 		args->cmd = USB_FS_CLEAR_STALL_SYNC;
3389 		break;
3390 	case FBSD_LUSB_FS_CLOSE:
3391 		args->cmd = USB_FS_CLOSE;
3392 		break;
3393 	case FBSD_LUSB_FS_COMPLETE:
3394 		args->cmd = USB_FS_COMPLETE;
3395 		break;
3396 	case FBSD_LUSB_FS_INIT:
3397 		args->cmd = USB_FS_INIT;
3398 		break;
3399 	case FBSD_LUSB_FS_OPEN:
3400 		args->cmd = USB_FS_OPEN;
3401 		break;
3402 	case FBSD_LUSB_FS_START:
3403 		args->cmd = USB_FS_START;
3404 		break;
3405 	case FBSD_LUSB_FS_STOP:
3406 		args->cmd = USB_FS_STOP;
3407 		break;
3408 	case FBSD_LUSB_FS_UNINIT:
3409 		args->cmd = USB_FS_UNINIT;
3410 		break;
3411 	case FBSD_LUSB_GET_CONFIG:
3412 		args->cmd = USB_GET_CONFIG;
3413 		break;
3414 	case FBSD_LUSB_GET_DEVICEINFO:
3415 		args->cmd = USB_GET_DEVICEINFO;
3416 		break;
3417 	case FBSD_LUSB_GET_DEVICE_DESC:
3418 		args->cmd = USB_GET_DEVICE_DESC;
3419 		break;
3420 	case FBSD_LUSB_GET_FULL_DESC:
3421 		args->cmd = USB_GET_FULL_DESC;
3422 		break;
3423 	case FBSD_LUSB_GET_IFACE_DRIVER:
3424 		args->cmd = USB_GET_IFACE_DRIVER;
3425 		break;
3426 	case FBSD_LUSB_GET_PLUGTIME:
3427 		args->cmd = USB_GET_PLUGTIME;
3428 		break;
3429 	case FBSD_LUSB_GET_POWER_MODE:
3430 		args->cmd = USB_GET_POWER_MODE;
3431 		break;
3432 	case FBSD_LUSB_GET_REPORT_DESC:
3433 		args->cmd = USB_GET_REPORT_DESC;
3434 		break;
3435 	case FBSD_LUSB_GET_REPORT_ID:
3436 		args->cmd = USB_GET_REPORT_ID;
3437 		break;
3438 	case FBSD_LUSB_GET_TEMPLATE:
3439 		args->cmd = USB_GET_TEMPLATE;
3440 		break;
3441 	case FBSD_LUSB_IFACE_DRIVER_ACTIVE:
3442 		args->cmd = USB_IFACE_DRIVER_ACTIVE;
3443 		break;
3444 	case FBSD_LUSB_IFACE_DRIVER_DETACH:
3445 		args->cmd = USB_IFACE_DRIVER_DETACH;
3446 		break;
3447 	case FBSD_LUSB_QUIRK_NAME_GET:
3448 		args->cmd = USB_QUIRK_NAME_GET;
3449 		break;
3450 	case FBSD_LUSB_READ_DIR:
3451 		args->cmd = USB_READ_DIR;
3452 		break;
3453 	case FBSD_LUSB_SET_ALTINTERFACE:
3454 		args->cmd = USB_SET_ALTINTERFACE;
3455 		break;
3456 	case FBSD_LUSB_SET_CONFIG:
3457 		args->cmd = USB_SET_CONFIG;
3458 		break;
3459 	case FBSD_LUSB_SET_IMMED:
3460 		args->cmd = USB_SET_IMMED;
3461 		break;
3462 	case FBSD_LUSB_SET_POWER_MODE:
3463 		args->cmd = USB_SET_POWER_MODE;
3464 		break;
3465 	case FBSD_LUSB_SET_TEMPLATE:
3466 		args->cmd = USB_SET_TEMPLATE;
3467 		break;
3468 	case FBSD_LUSB_FS_OPEN_STREAM:
3469 		args->cmd = USB_FS_OPEN_STREAM;
3470 		break;
3471 	case FBSD_LUSB_GET_DEV_PORT_PATH:
3472 		args->cmd = USB_GET_DEV_PORT_PATH;
3473 		break;
3474 	case FBSD_LUSB_GET_POWER_USAGE:
3475 		args->cmd = USB_GET_POWER_USAGE;
3476 		break;
3477 	default:
3478 		error = ENOIOCTL;
3479 	}
3480 	if (error != ENOIOCTL)
3481 		error = sys_ioctl(td, (struct ioctl_args *)args);
3482 	return (error);
3483 }
3484 
3485 /*
3486  * Some evdev ioctls must be translated.
3487  *  - EVIOCGMTSLOTS is a IOC_READ ioctl on Linux although it has input data
3488  *    (must be IOC_INOUT on FreeBSD).
3489  *  - On Linux, EVIOCGRAB, EVIOCREVOKE and EVIOCRMFF are defined as _IOW with
3490  *    an int argument. You don't pass an int pointer to the ioctl(), however,
3491  *    but just the int directly. On FreeBSD, they are defined as _IOWINT for
3492  *    this to work.
3493  */
3494 static int
3495 linux_ioctl_evdev(struct thread *td, struct linux_ioctl_args *args)
3496 {
3497 	struct file *fp;
3498 	clockid_t clock;
3499 	int error;
3500 
3501 	args->cmd = SETDIR(args->cmd);
3502 
3503 	switch (args->cmd) {
3504 	case (EVIOCGRAB & ~IOC_DIRMASK) | IOC_IN:
3505 		args->cmd = EVIOCGRAB;
3506 		break;
3507 	case (EVIOCREVOKE & ~IOC_DIRMASK) | IOC_IN:
3508 		args->cmd = EVIOCREVOKE;
3509 		break;
3510 	case (EVIOCRMFF & ~IOC_DIRMASK) | IOC_IN:
3511 		args->cmd = EVIOCRMFF;
3512 		break;
3513 	case EVIOCSCLOCKID: {
3514 		error = copyin(PTRIN(args->arg), &clock, sizeof(clock));
3515 		if (error != 0)
3516 			return (error);
3517 		if (clock & ~(LINUX_IOCTL_EVDEV_CLK))
3518 			return (EINVAL);
3519 		error = linux_to_native_clockid(&clock, clock);
3520 		if (error != 0)
3521 			return (error);
3522 
3523 		error = fget(td, args->fd,
3524 		    &cap_ioctl_rights, &fp);
3525 		if (error != 0)
3526 			return (error);
3527 
3528 		error = fo_ioctl(fp, EVIOCSCLOCKID, &clock, td->td_ucred, td);
3529 		fdrop(fp, td);
3530 		return (error);
3531 	}
3532 	default:
3533 		break;
3534 	}
3535 
3536 	if (IOCBASECMD(args->cmd) ==
3537 	    ((EVIOCGMTSLOTS(0) & ~IOC_DIRMASK) | IOC_OUT))
3538 		args->cmd = (args->cmd & ~IOC_DIRMASK) | IOC_INOUT;
3539 
3540 	return (sys_ioctl(td, (struct ioctl_args *)args));
3541 }
3542 
3543 /*
3544  * main ioctl syscall function
3545  */
3546 
3547 int
3548 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
3549 {
3550 	struct file *fp;
3551 	struct linux_ioctl_handler_element *he;
3552 	int error, cmd;
3553 
3554 	error = fget(td, args->fd, &cap_ioctl_rights, &fp);
3555 	if (error != 0)
3556 		return (error);
3557 	if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
3558 		fdrop(fp, td);
3559 		return (EBADF);
3560 	}
3561 
3562 	/* Iterate over the ioctl handlers */
3563 	cmd = args->cmd & 0xffff;
3564 	sx_slock(&linux_ioctl_sx);
3565 	mtx_lock(&Giant);
3566 #ifdef COMPAT_LINUX32
3567 	TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
3568 		if (cmd >= he->low && cmd <= he->high) {
3569 			error = (*he->func)(td, args);
3570 			if (error != ENOIOCTL) {
3571 				mtx_unlock(&Giant);
3572 				sx_sunlock(&linux_ioctl_sx);
3573 				fdrop(fp, td);
3574 				return (error);
3575 			}
3576 		}
3577 	}
3578 #endif
3579 	TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
3580 		if (cmd >= he->low && cmd <= he->high) {
3581 			error = (*he->func)(td, args);
3582 			if (error != ENOIOCTL) {
3583 				mtx_unlock(&Giant);
3584 				sx_sunlock(&linux_ioctl_sx);
3585 				fdrop(fp, td);
3586 				return (error);
3587 			}
3588 		}
3589 	}
3590 	mtx_unlock(&Giant);
3591 	sx_sunlock(&linux_ioctl_sx);
3592 	fdrop(fp, td);
3593 
3594 	switch (args->cmd & 0xffff) {
3595 	case LINUX_BTRFS_IOC_CLONE:
3596 	case LINUX_FS_IOC_FIEMAP:
3597 		return (ENOTSUP);
3598 
3599 	default:
3600 		linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
3601 		    args->fd, (int)(args->cmd & 0xffff),
3602 		    (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
3603 		break;
3604 	}
3605 
3606 	return (EINVAL);
3607 }
3608 
3609 int
3610 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
3611 {
3612 	struct linux_ioctl_handler_element *he, *cur;
3613 
3614 	if (h == NULL || h->func == NULL)
3615 		return (EINVAL);
3616 
3617 	/*
3618 	 * Reuse the element if the handler is already on the list, otherwise
3619 	 * create a new element.
3620 	 */
3621 	sx_xlock(&linux_ioctl_sx);
3622 	TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
3623 		if (he->func == h->func)
3624 			break;
3625 	}
3626 	if (he == NULL) {
3627 		he = malloc(sizeof(*he),
3628 		    M_LINUX, M_WAITOK);
3629 		he->func = h->func;
3630 	} else
3631 		TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
3632 
3633 	/* Initialize range information. */
3634 	he->low = h->low;
3635 	he->high = h->high;
3636 	he->span = h->high - h->low + 1;
3637 
3638 	/* Add the element to the list, sorted on span. */
3639 	TAILQ_FOREACH(cur, &linux_ioctl_handlers, list) {
3640 		if (cur->span > he->span) {
3641 			TAILQ_INSERT_BEFORE(cur, he, list);
3642 			sx_xunlock(&linux_ioctl_sx);
3643 			return (0);
3644 		}
3645 	}
3646 	TAILQ_INSERT_TAIL(&linux_ioctl_handlers, he, list);
3647 	sx_xunlock(&linux_ioctl_sx);
3648 
3649 	return (0);
3650 }
3651 
3652 int
3653 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
3654 {
3655 	struct linux_ioctl_handler_element *he;
3656 
3657 	if (h == NULL || h->func == NULL)
3658 		return (EINVAL);
3659 
3660 	sx_xlock(&linux_ioctl_sx);
3661 	TAILQ_FOREACH(he, &linux_ioctl_handlers, list) {
3662 		if (he->func == h->func) {
3663 			TAILQ_REMOVE(&linux_ioctl_handlers, he, list);
3664 			sx_xunlock(&linux_ioctl_sx);
3665 			free(he, M_LINUX);
3666 			return (0);
3667 		}
3668 	}
3669 	sx_xunlock(&linux_ioctl_sx);
3670 
3671 	return (EINVAL);
3672 }
3673 
3674 #ifdef COMPAT_LINUX32
3675 int
3676 linux32_ioctl_register_handler(struct linux_ioctl_handler *h)
3677 {
3678 	struct linux_ioctl_handler_element *he, *cur;
3679 
3680 	if (h == NULL || h->func == NULL)
3681 		return (EINVAL);
3682 
3683 	/*
3684 	 * Reuse the element if the handler is already on the list, otherwise
3685 	 * create a new element.
3686 	 */
3687 	sx_xlock(&linux_ioctl_sx);
3688 	TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
3689 		if (he->func == h->func)
3690 			break;
3691 	}
3692 	if (he == NULL) {
3693 		he = malloc(sizeof(*he), M_LINUX, M_WAITOK);
3694 		he->func = h->func;
3695 	} else
3696 		TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
3697 
3698 	/* Initialize range information. */
3699 	he->low = h->low;
3700 	he->high = h->high;
3701 	he->span = h->high - h->low + 1;
3702 
3703 	/* Add the element to the list, sorted on span. */
3704 	TAILQ_FOREACH(cur, &linux32_ioctl_handlers, list) {
3705 		if (cur->span > he->span) {
3706 			TAILQ_INSERT_BEFORE(cur, he, list);
3707 			sx_xunlock(&linux_ioctl_sx);
3708 			return (0);
3709 		}
3710 	}
3711 	TAILQ_INSERT_TAIL(&linux32_ioctl_handlers, he, list);
3712 	sx_xunlock(&linux_ioctl_sx);
3713 
3714 	return (0);
3715 }
3716 
3717 int
3718 linux32_ioctl_unregister_handler(struct linux_ioctl_handler *h)
3719 {
3720 	struct linux_ioctl_handler_element *he;
3721 
3722 	if (h == NULL || h->func == NULL)
3723 		return (EINVAL);
3724 
3725 	sx_xlock(&linux_ioctl_sx);
3726 	TAILQ_FOREACH(he, &linux32_ioctl_handlers, list) {
3727 		if (he->func == h->func) {
3728 			TAILQ_REMOVE(&linux32_ioctl_handlers, he, list);
3729 			sx_xunlock(&linux_ioctl_sx);
3730 			free(he, M_LINUX);
3731 			return (0);
3732 		}
3733 	}
3734 	sx_xunlock(&linux_ioctl_sx);
3735 
3736 	return (EINVAL);
3737 }
3738 #endif
3739