xref: /freebsd/sys/compat/linux/linux_ioctl.c (revision f51e58036ebe3a3e75527325e659d7ba02b129ed)
1 /*
2  * Copyright (c) 1994-1995 S�ren Schmidt
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer
10  *    in this position and unchanged.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/sysproto.h>
35 #include <sys/cdio.h>
36 #include <sys/dvdio.h>
37 #include <sys/conf.h>
38 #include <sys/disk.h>
39 #include <sys/consio.h>
40 #include <sys/ctype.h>
41 #include <sys/fcntl.h>
42 #include <sys/file.h>
43 #include <sys/filedesc.h>
44 #include <sys/filio.h>
45 #include <sys/kbio.h>
46 #include <sys/linker_set.h>
47 #include <sys/malloc.h>
48 #include <sys/proc.h>
49 #include <sys/socket.h>
50 #include <sys/sockio.h>
51 #include <sys/soundcard.h>
52 #include <sys/tty.h>
53 #include <sys/uio.h>
54 #include <net/if.h>
55 #include <net/if_dl.h>
56 #include <net/if_types.h>
57 
58 #include <machine/../linux/linux.h>
59 #include <machine/../linux/linux_proto.h>
60 
61 #include <compat/linux/linux_ioctl.h>
62 #include <compat/linux/linux_mib.h>
63 #include <compat/linux/linux_util.h>
64 
65 static linux_ioctl_function_t linux_ioctl_cdrom;
66 static linux_ioctl_function_t linux_ioctl_vfat;
67 static linux_ioctl_function_t linux_ioctl_console;
68 static linux_ioctl_function_t linux_ioctl_disk;
69 static linux_ioctl_function_t linux_ioctl_socket;
70 static linux_ioctl_function_t linux_ioctl_sound;
71 static linux_ioctl_function_t linux_ioctl_termio;
72 static linux_ioctl_function_t linux_ioctl_private;
73 static linux_ioctl_function_t linux_ioctl_drm;
74 static linux_ioctl_function_t linux_ioctl_special;
75 
76 static struct linux_ioctl_handler cdrom_handler =
77 { linux_ioctl_cdrom, LINUX_IOCTL_CDROM_MIN, LINUX_IOCTL_CDROM_MAX };
78 static struct linux_ioctl_handler vfat_handler =
79 { linux_ioctl_vfat, LINUX_IOCTL_VFAT_MIN, LINUX_IOCTL_VFAT_MAX };
80 static struct linux_ioctl_handler console_handler =
81 { linux_ioctl_console, LINUX_IOCTL_CONSOLE_MIN, LINUX_IOCTL_CONSOLE_MAX };
82 static struct linux_ioctl_handler disk_handler =
83 { linux_ioctl_disk, LINUX_IOCTL_DISK_MIN, LINUX_IOCTL_DISK_MAX };
84 static struct linux_ioctl_handler socket_handler =
85 { linux_ioctl_socket, LINUX_IOCTL_SOCKET_MIN, LINUX_IOCTL_SOCKET_MAX };
86 static struct linux_ioctl_handler sound_handler =
87 { linux_ioctl_sound, LINUX_IOCTL_SOUND_MIN, LINUX_IOCTL_SOUND_MAX };
88 static struct linux_ioctl_handler termio_handler =
89 { linux_ioctl_termio, LINUX_IOCTL_TERMIO_MIN, LINUX_IOCTL_TERMIO_MAX };
90 static struct linux_ioctl_handler private_handler =
91 { linux_ioctl_private, LINUX_IOCTL_PRIVATE_MIN, LINUX_IOCTL_PRIVATE_MAX };
92 static struct linux_ioctl_handler drm_handler =
93 { linux_ioctl_drm, LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX };
94 
95 DATA_SET(linux_ioctl_handler_set, cdrom_handler);
96 DATA_SET(linux_ioctl_handler_set, vfat_handler);
97 DATA_SET(linux_ioctl_handler_set, console_handler);
98 DATA_SET(linux_ioctl_handler_set, disk_handler);
99 DATA_SET(linux_ioctl_handler_set, socket_handler);
100 DATA_SET(linux_ioctl_handler_set, sound_handler);
101 DATA_SET(linux_ioctl_handler_set, termio_handler);
102 DATA_SET(linux_ioctl_handler_set, private_handler);
103 DATA_SET(linux_ioctl_handler_set, drm_handler);
104 
105 struct handler_element
106 {
107 	TAILQ_ENTRY(handler_element) list;
108 	int	(*func)(struct thread *, struct linux_ioctl_args *);
109 	int	low, high, span;
110 };
111 
112 static TAILQ_HEAD(, handler_element) handlers =
113 	TAILQ_HEAD_INITIALIZER(handlers);
114 
115 static int
116 linux_ioctl_disk(struct thread *td, struct linux_ioctl_args *args)
117 {
118 	struct file *fp;
119 	int error;
120 	u_int sectorsize;
121 	off_t mediasize;
122 
123 	if ((error = fget(td, args->fd, &fp)) != 0)
124 		return (error);
125 	switch (args->cmd & 0xffff) {
126 	case LINUX_BLKGETSIZE:
127 		error = fo_ioctl(fp, DIOCGSECTORSIZE,
128 		    (caddr_t)&sectorsize, td->td_ucred, td);
129 		if (!error)
130 			error = fo_ioctl(fp, DIOCGMEDIASIZE,
131 			    (caddr_t)&mediasize, td->td_ucred, td);
132 		fdrop(fp, td);
133 		if (error)
134 			return (error);
135 		sectorsize = mediasize / sectorsize;
136 		/*
137 		 * XXX: How do we know we return the right size of integer ?
138 		 */
139 		return (copyout(&sectorsize, (void *)args->arg,
140 		    sizeof(sectorsize)));
141 	}
142 	fdrop(fp, td);
143 	return (ENOIOCTL);
144 }
145 
146 /*
147  * termio related ioctls
148  */
149 
150 struct linux_termio {
151 	unsigned short c_iflag;
152 	unsigned short c_oflag;
153 	unsigned short c_cflag;
154 	unsigned short c_lflag;
155 	unsigned char c_line;
156 	unsigned char c_cc[LINUX_NCC];
157 };
158 
159 struct linux_termios {
160 	unsigned int c_iflag;
161 	unsigned int c_oflag;
162 	unsigned int c_cflag;
163 	unsigned int c_lflag;
164 #ifdef __alpha__
165 	unsigned char c_cc[LINUX_NCCS];
166 	unsigned char c_line;
167 	unsigned int  c_ispeed;
168 	unsigned int  c_ospeed;
169 #else
170 	unsigned char c_line;
171 	unsigned char c_cc[LINUX_NCCS];
172 #endif
173 };
174 
175 struct linux_winsize {
176 	unsigned short ws_row, ws_col;
177 	unsigned short ws_xpixel, ws_ypixel;
178 };
179 
180 static struct speedtab sptab[] = {
181 	{ B0, LINUX_B0 }, { B50, LINUX_B50 },
182 	{ B75, LINUX_B75 }, { B110, LINUX_B110 },
183 	{ B134, LINUX_B134 }, { B150, LINUX_B150 },
184 	{ B200, LINUX_B200 }, { B300, LINUX_B300 },
185 	{ B600, LINUX_B600 }, { B1200, LINUX_B1200 },
186 	{ B1800, LINUX_B1800 }, { B2400, LINUX_B2400 },
187 	{ B4800, LINUX_B4800 }, { B9600, LINUX_B9600 },
188 	{ B19200, LINUX_B19200 }, { B38400, LINUX_B38400 },
189 	{ B57600, LINUX_B57600 }, { B115200, LINUX_B115200 },
190 	{-1, -1 }
191 };
192 
193 struct linux_serial_struct {
194 	int	type;
195 	int	line;
196 	int	port;
197 	int	irq;
198 	int	flags;
199 	int	xmit_fifo_size;
200 	int	custom_divisor;
201 	int	baud_base;
202 	unsigned short close_delay;
203 	char	reserved_char[2];
204 	int	hub6;
205 	unsigned short closing_wait;
206 	unsigned short closing_wait2;
207 	int	reserved[4];
208 };
209 
210 static int
211 linux_to_bsd_speed(int code, struct speedtab *table)
212 {
213 	for ( ; table->sp_code != -1; table++)
214 		if (table->sp_code == code)
215 			return (table->sp_speed);
216 	return -1;
217 }
218 
219 static int
220 bsd_to_linux_speed(int speed, struct speedtab *table)
221 {
222 	for ( ; table->sp_speed != -1; table++)
223 		if (table->sp_speed == speed)
224 			return (table->sp_code);
225 	return -1;
226 }
227 
228 static void
229 bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
230 {
231 	int i;
232 
233 #ifdef DEBUG
234 	if (ldebug(ioctl)) {
235 		printf("LINUX: BSD termios structure (input):\n");
236 		printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
237 		    bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
238 		    bios->c_ispeed, bios->c_ospeed);
239 		printf("c_cc ");
240 		for (i=0; i<NCCS; i++)
241 			printf("%02x ", bios->c_cc[i]);
242 		printf("\n");
243 	}
244 #endif
245 
246 	lios->c_iflag = 0;
247 	if (bios->c_iflag & IGNBRK)
248 		lios->c_iflag |= LINUX_IGNBRK;
249 	if (bios->c_iflag & BRKINT)
250 		lios->c_iflag |= LINUX_BRKINT;
251 	if (bios->c_iflag & IGNPAR)
252 		lios->c_iflag |= LINUX_IGNPAR;
253 	if (bios->c_iflag & PARMRK)
254 		lios->c_iflag |= LINUX_PARMRK;
255 	if (bios->c_iflag & INPCK)
256 		lios->c_iflag |= LINUX_INPCK;
257 	if (bios->c_iflag & ISTRIP)
258 		lios->c_iflag |= LINUX_ISTRIP;
259 	if (bios->c_iflag & INLCR)
260 		lios->c_iflag |= LINUX_INLCR;
261 	if (bios->c_iflag & IGNCR)
262 		lios->c_iflag |= LINUX_IGNCR;
263 	if (bios->c_iflag & ICRNL)
264 		lios->c_iflag |= LINUX_ICRNL;
265 	if (bios->c_iflag & IXON)
266 		lios->c_iflag |= LINUX_IXON;
267 	if (bios->c_iflag & IXANY)
268 		lios->c_iflag |= LINUX_IXANY;
269 	if (bios->c_iflag & IXOFF)
270 		lios->c_iflag |= LINUX_IXOFF;
271 	if (bios->c_iflag & IMAXBEL)
272 		lios->c_iflag |= LINUX_IMAXBEL;
273 
274 	lios->c_oflag = 0;
275 	if (bios->c_oflag & OPOST)
276 		lios->c_oflag |= LINUX_OPOST;
277 	if (bios->c_oflag & ONLCR)
278 		lios->c_oflag |= LINUX_ONLCR;
279 	if (bios->c_oflag & OXTABS)
280 		lios->c_oflag |= LINUX_XTABS;
281 
282 	lios->c_cflag = bsd_to_linux_speed(bios->c_ispeed, sptab);
283 	lios->c_cflag |= (bios->c_cflag & CSIZE) >> 4;
284 	if (bios->c_cflag & CSTOPB)
285 		lios->c_cflag |= LINUX_CSTOPB;
286 	if (bios->c_cflag & CREAD)
287 		lios->c_cflag |= LINUX_CREAD;
288 	if (bios->c_cflag & PARENB)
289 		lios->c_cflag |= LINUX_PARENB;
290 	if (bios->c_cflag & PARODD)
291 		lios->c_cflag |= LINUX_PARODD;
292 	if (bios->c_cflag & HUPCL)
293 		lios->c_cflag |= LINUX_HUPCL;
294 	if (bios->c_cflag & CLOCAL)
295 		lios->c_cflag |= LINUX_CLOCAL;
296 	if (bios->c_cflag & CRTSCTS)
297 		lios->c_cflag |= LINUX_CRTSCTS;
298 
299 	lios->c_lflag = 0;
300 	if (bios->c_lflag & ISIG)
301 		lios->c_lflag |= LINUX_ISIG;
302 	if (bios->c_lflag & ICANON)
303 		lios->c_lflag |= LINUX_ICANON;
304 	if (bios->c_lflag & ECHO)
305 		lios->c_lflag |= LINUX_ECHO;
306 	if (bios->c_lflag & ECHOE)
307 		lios->c_lflag |= LINUX_ECHOE;
308 	if (bios->c_lflag & ECHOK)
309 		lios->c_lflag |= LINUX_ECHOK;
310 	if (bios->c_lflag & ECHONL)
311 		lios->c_lflag |= LINUX_ECHONL;
312 	if (bios->c_lflag & NOFLSH)
313 		lios->c_lflag |= LINUX_NOFLSH;
314 	if (bios->c_lflag & TOSTOP)
315 		lios->c_lflag |= LINUX_TOSTOP;
316 	if (bios->c_lflag & ECHOCTL)
317 		lios->c_lflag |= LINUX_ECHOCTL;
318 	if (bios->c_lflag & ECHOPRT)
319 		lios->c_lflag |= LINUX_ECHOPRT;
320 	if (bios->c_lflag & ECHOKE)
321 		lios->c_lflag |= LINUX_ECHOKE;
322 	if (bios->c_lflag & FLUSHO)
323 		lios->c_lflag |= LINUX_FLUSHO;
324 	if (bios->c_lflag & PENDIN)
325 		lios->c_lflag |= LINUX_PENDIN;
326 	if (bios->c_lflag & IEXTEN)
327 		lios->c_lflag |= LINUX_IEXTEN;
328 
329 	for (i=0; i<LINUX_NCCS; i++)
330 		lios->c_cc[i] = LINUX_POSIX_VDISABLE;
331 	lios->c_cc[LINUX_VINTR] = bios->c_cc[VINTR];
332 	lios->c_cc[LINUX_VQUIT] = bios->c_cc[VQUIT];
333 	lios->c_cc[LINUX_VERASE] = bios->c_cc[VERASE];
334 	lios->c_cc[LINUX_VKILL] = bios->c_cc[VKILL];
335 	lios->c_cc[LINUX_VEOF] = bios->c_cc[VEOF];
336 	lios->c_cc[LINUX_VEOL] = bios->c_cc[VEOL];
337 	lios->c_cc[LINUX_VMIN] = bios->c_cc[VMIN];
338 	lios->c_cc[LINUX_VTIME] = bios->c_cc[VTIME];
339 	lios->c_cc[LINUX_VEOL2] = bios->c_cc[VEOL2];
340 	lios->c_cc[LINUX_VSUSP] = bios->c_cc[VSUSP];
341 	lios->c_cc[LINUX_VSTART] = bios->c_cc[VSTART];
342 	lios->c_cc[LINUX_VSTOP] = bios->c_cc[VSTOP];
343 	lios->c_cc[LINUX_VREPRINT] = bios->c_cc[VREPRINT];
344 	lios->c_cc[LINUX_VDISCARD] = bios->c_cc[VDISCARD];
345 	lios->c_cc[LINUX_VWERASE] = bios->c_cc[VWERASE];
346 	lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
347 
348 	for (i=0; i<LINUX_NCCS; i++) {
349 		if (lios->c_cc[i] == _POSIX_VDISABLE)
350 			lios->c_cc[i] = LINUX_POSIX_VDISABLE;
351 	}
352 	lios->c_line = 0;
353 
354 #ifdef DEBUG
355 	if (ldebug(ioctl)) {
356 		printf("LINUX: LINUX termios structure (output):\n");
357 		printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
358 		    lios->c_iflag, lios->c_oflag, lios->c_cflag,
359 		    lios->c_lflag, (int)lios->c_line);
360 		printf("c_cc ");
361 		for (i=0; i<LINUX_NCCS; i++)
362 			printf("%02x ", lios->c_cc[i]);
363 		printf("\n");
364 	}
365 #endif
366 }
367 
368 static void
369 linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
370 {
371 	int i;
372 
373 #ifdef DEBUG
374 	if (ldebug(ioctl)) {
375 		printf("LINUX: LINUX termios structure (input):\n");
376 		printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
377 		    lios->c_iflag, lios->c_oflag, lios->c_cflag,
378 		    lios->c_lflag, (int)lios->c_line);
379 		printf("c_cc ");
380 		for (i=0; i<LINUX_NCCS; i++)
381 			printf("%02x ", lios->c_cc[i]);
382 		printf("\n");
383 	}
384 #endif
385 
386 	bios->c_iflag = 0;
387 	if (lios->c_iflag & LINUX_IGNBRK)
388 		bios->c_iflag |= IGNBRK;
389 	if (lios->c_iflag & LINUX_BRKINT)
390 		bios->c_iflag |= BRKINT;
391 	if (lios->c_iflag & LINUX_IGNPAR)
392 		bios->c_iflag |= IGNPAR;
393 	if (lios->c_iflag & LINUX_PARMRK)
394 		bios->c_iflag |= PARMRK;
395 	if (lios->c_iflag & LINUX_INPCK)
396 		bios->c_iflag |= INPCK;
397 	if (lios->c_iflag & LINUX_ISTRIP)
398 		bios->c_iflag |= ISTRIP;
399 	if (lios->c_iflag & LINUX_INLCR)
400 		bios->c_iflag |= INLCR;
401 	if (lios->c_iflag & LINUX_IGNCR)
402 		bios->c_iflag |= IGNCR;
403 	if (lios->c_iflag & LINUX_ICRNL)
404 		bios->c_iflag |= ICRNL;
405 	if (lios->c_iflag & LINUX_IXON)
406 		bios->c_iflag |= IXON;
407 	if (lios->c_iflag & LINUX_IXANY)
408 		bios->c_iflag |= IXANY;
409 	if (lios->c_iflag & LINUX_IXOFF)
410 		bios->c_iflag |= IXOFF;
411 	if (lios->c_iflag & LINUX_IMAXBEL)
412 		bios->c_iflag |= IMAXBEL;
413 
414 	bios->c_oflag = 0;
415 	if (lios->c_oflag & LINUX_OPOST)
416 		bios->c_oflag |= OPOST;
417 	if (lios->c_oflag & LINUX_ONLCR)
418 		bios->c_oflag |= ONLCR;
419 	if (lios->c_oflag & LINUX_XTABS)
420 		bios->c_oflag |= OXTABS;
421 
422 	bios->c_cflag = (lios->c_cflag & LINUX_CSIZE) << 4;
423 	if (lios->c_cflag & LINUX_CSTOPB)
424 		bios->c_cflag |= CSTOPB;
425 	if (lios->c_cflag & LINUX_CREAD)
426 		bios->c_cflag |= CREAD;
427 	if (lios->c_cflag & LINUX_PARENB)
428 		bios->c_cflag |= PARENB;
429 	if (lios->c_cflag & LINUX_PARODD)
430 		bios->c_cflag |= PARODD;
431 	if (lios->c_cflag & LINUX_HUPCL)
432 		bios->c_cflag |= HUPCL;
433 	if (lios->c_cflag & LINUX_CLOCAL)
434 		bios->c_cflag |= CLOCAL;
435 	if (lios->c_cflag & LINUX_CRTSCTS)
436 		bios->c_cflag |= CRTSCTS;
437 
438 	bios->c_lflag = 0;
439 	if (lios->c_lflag & LINUX_ISIG)
440 		bios->c_lflag |= ISIG;
441 	if (lios->c_lflag & LINUX_ICANON)
442 		bios->c_lflag |= ICANON;
443 	if (lios->c_lflag & LINUX_ECHO)
444 		bios->c_lflag |= ECHO;
445 	if (lios->c_lflag & LINUX_ECHOE)
446 		bios->c_lflag |= ECHOE;
447 	if (lios->c_lflag & LINUX_ECHOK)
448 		bios->c_lflag |= ECHOK;
449 	if (lios->c_lflag & LINUX_ECHONL)
450 		bios->c_lflag |= ECHONL;
451 	if (lios->c_lflag & LINUX_NOFLSH)
452 		bios->c_lflag |= NOFLSH;
453 	if (lios->c_lflag & LINUX_TOSTOP)
454 		bios->c_lflag |= TOSTOP;
455 	if (lios->c_lflag & LINUX_ECHOCTL)
456 		bios->c_lflag |= ECHOCTL;
457 	if (lios->c_lflag & LINUX_ECHOPRT)
458 		bios->c_lflag |= ECHOPRT;
459 	if (lios->c_lflag & LINUX_ECHOKE)
460 		bios->c_lflag |= ECHOKE;
461 	if (lios->c_lflag & LINUX_FLUSHO)
462 		bios->c_lflag |= FLUSHO;
463 	if (lios->c_lflag & LINUX_PENDIN)
464 		bios->c_lflag |= PENDIN;
465 	if (lios->c_lflag & LINUX_IEXTEN)
466 		bios->c_lflag |= IEXTEN;
467 
468 	for (i=0; i<NCCS; i++)
469 		bios->c_cc[i] = _POSIX_VDISABLE;
470 	bios->c_cc[VINTR] = lios->c_cc[LINUX_VINTR];
471 	bios->c_cc[VQUIT] = lios->c_cc[LINUX_VQUIT];
472 	bios->c_cc[VERASE] = lios->c_cc[LINUX_VERASE];
473 	bios->c_cc[VKILL] = lios->c_cc[LINUX_VKILL];
474 	bios->c_cc[VEOF] = lios->c_cc[LINUX_VEOF];
475 	bios->c_cc[VEOL] = lios->c_cc[LINUX_VEOL];
476 	bios->c_cc[VMIN] = lios->c_cc[LINUX_VMIN];
477 	bios->c_cc[VTIME] = lios->c_cc[LINUX_VTIME];
478 	bios->c_cc[VEOL2] = lios->c_cc[LINUX_VEOL2];
479 	bios->c_cc[VSUSP] = lios->c_cc[LINUX_VSUSP];
480 	bios->c_cc[VSTART] = lios->c_cc[LINUX_VSTART];
481 	bios->c_cc[VSTOP] = lios->c_cc[LINUX_VSTOP];
482 	bios->c_cc[VREPRINT] = lios->c_cc[LINUX_VREPRINT];
483 	bios->c_cc[VDISCARD] = lios->c_cc[LINUX_VDISCARD];
484 	bios->c_cc[VWERASE] = lios->c_cc[LINUX_VWERASE];
485 	bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
486 
487 	for (i=0; i<NCCS; i++) {
488 		if (bios->c_cc[i] == LINUX_POSIX_VDISABLE)
489 			bios->c_cc[i] = _POSIX_VDISABLE;
490 	}
491 
492 	bios->c_ispeed = bios->c_ospeed =
493 	    linux_to_bsd_speed(lios->c_cflag & LINUX_CBAUD, sptab);
494 
495 #ifdef DEBUG
496 	if (ldebug(ioctl)) {
497 		printf("LINUX: BSD termios structure (output):\n");
498 		printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
499 		    bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
500 		    bios->c_ispeed, bios->c_ospeed);
501 		printf("c_cc ");
502 		for (i=0; i<NCCS; i++)
503 			printf("%02x ", bios->c_cc[i]);
504 		printf("\n");
505 	}
506 #endif
507 }
508 
509 static void
510 bsd_to_linux_termio(struct termios *bios, struct linux_termio *lio)
511 {
512 	struct linux_termios lios;
513 
514 	bsd_to_linux_termios(bios, &lios);
515 	lio->c_iflag = lios.c_iflag;
516 	lio->c_oflag = lios.c_oflag;
517 	lio->c_cflag = lios.c_cflag;
518 	lio->c_lflag = lios.c_lflag;
519 	lio->c_line  = lios.c_line;
520 #ifdef __alpha__
521 	lio->c_cc[LINUX__VINTR] = lios.c_cc[LINUX_VINTR];
522 	lio->c_cc[LINUX__VQUIT] = lios.c_cc[LINUX_VQUIT];
523 	lio->c_cc[LINUX__VERASE] = lios.c_cc[LINUX_VERASE];
524 	lio->c_cc[LINUX__VKILL] = lios.c_cc[LINUX_VKILL];
525 	lio->c_cc[LINUX__VEOF] =
526 	    lios.c_cc[(lios.c_lflag & ICANON) ? LINUX_VEOF : LINUX_VMIN];
527 	lio->c_cc[LINUX__VEOL] =
528 	    lios.c_cc[(lios.c_lflag & ICANON) ? LINUX_VEOL : LINUX_VTIME];
529 	lio->c_cc[LINUX__VEOL2] = lios.c_cc[LINUX_VEOL2];
530 	lio->c_cc[LINUX__VSWTC] = lios.c_cc[LINUX_VSWTC];
531 #else
532 	memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
533 #endif
534 }
535 
536 static void
537 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
538 {
539 	struct linux_termios lios;
540 	int i;
541 
542 	lios.c_iflag = lio->c_iflag;
543 	lios.c_oflag = lio->c_oflag;
544 	lios.c_cflag = lio->c_cflag;
545 	lios.c_lflag = lio->c_lflag;
546 #ifdef __alpha__
547 	for (i=0; i<LINUX_NCCS; i++)
548 		lios.c_cc[i] = LINUX_POSIX_VDISABLE;
549 	lios.c_cc[LINUX_VINTR] = lio->c_cc[LINUX__VINTR];
550 	lios.c_cc[LINUX_VQUIT] = lio->c_cc[LINUX__VQUIT];
551 	lios.c_cc[LINUX_VERASE] = lio->c_cc[LINUX__VERASE];
552 	lios.c_cc[LINUX_VKILL] = lio->c_cc[LINUX__VKILL];
553 	lios.c_cc[LINUX_VEOL2] = lio->c_cc[LINUX__VEOL2];
554 	lios.c_cc[LINUX_VSWTC] = lio->c_cc[LINUX__VSWTC];
555 	lios.c_cc[(lio->c_lflag & ICANON) ? LINUX_VEOF : LINUX_VMIN] =
556 	    lio->c_cc[LINUX__VEOF];
557 	lios.c_cc[(lio->c_lflag & ICANON) ? LINUX_VEOL : LINUX_VTIME] =
558 	    lio->c_cc[LINUX__VEOL];
559 #else
560 	for (i=LINUX_NCC; i<LINUX_NCCS; i++)
561 		lios.c_cc[i] = LINUX_POSIX_VDISABLE;
562 	memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
563 #endif
564 	linux_to_bsd_termios(&lios, bios);
565 }
566 
567 static int
568 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
569 {
570 	struct termios bios;
571 	struct linux_termios lios;
572 	struct linux_termio lio;
573 	struct file *fp;
574 	int error;
575 
576 	if ((error = fget(td, args->fd, &fp)) != 0)
577 		return (error);
578 
579 	switch (args->cmd & 0xffff) {
580 
581 	case LINUX_TCGETS:
582 		error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
583 		    td);
584 		if (error)
585 			break;
586 		bsd_to_linux_termios(&bios, &lios);
587 		error = copyout(&lios, (void *)args->arg, sizeof(lios));
588 		break;
589 
590 	case LINUX_TCSETS:
591 		error = copyin((void *)args->arg, &lios, sizeof(lios));
592 		if (error)
593 			break;
594 		linux_to_bsd_termios(&lios, &bios);
595 		error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
596 		    td));
597 		break;
598 
599 	case LINUX_TCSETSW:
600 		error = copyin((void *)args->arg, &lios, sizeof(lios));
601 		if (error)
602 			break;
603 		linux_to_bsd_termios(&lios, &bios);
604 		error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
605 		    td));
606 		break;
607 
608 	case LINUX_TCSETSF:
609 		error = copyin((void *)args->arg, &lios, sizeof(lios));
610 		if (error)
611 			break;
612 		linux_to_bsd_termios(&lios, &bios);
613 		error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
614 		    td));
615 		break;
616 
617 	case LINUX_TCGETA:
618 		error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
619 		    td);
620 		if (error)
621 			break;
622 		bsd_to_linux_termio(&bios, &lio);
623 		error = (copyout(&lio, (void *)args->arg, sizeof(lio)));
624 		break;
625 
626 	case LINUX_TCSETA:
627 		error = copyin((void *)args->arg, &lio, sizeof(lio));
628 		if (error)
629 			break;
630 		linux_to_bsd_termio(&lio, &bios);
631 		error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
632 		    td));
633 		break;
634 
635 	case LINUX_TCSETAW:
636 		error = copyin((void *)args->arg, &lio, sizeof(lio));
637 		if (error)
638 			break;
639 		linux_to_bsd_termio(&lio, &bios);
640 		error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
641 		    td));
642 		break;
643 
644 	case LINUX_TCSETAF:
645 		error = copyin((void *)args->arg, &lio, sizeof(lio));
646 		if (error)
647 			break;
648 		linux_to_bsd_termio(&lio, &bios);
649 		error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
650 		    td));
651 		break;
652 
653 	/* LINUX_TCSBRK */
654 
655 	case LINUX_TCXONC: {
656 		switch (args->arg) {
657 		case LINUX_TCOOFF:
658 			args->cmd = TIOCSTOP;
659 			break;
660 		case LINUX_TCOON:
661 			args->cmd = TIOCSTART;
662 			break;
663 		case LINUX_TCIOFF:
664 		case LINUX_TCION: {
665 			int c;
666 			struct write_args wr;
667 			error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
668 			    td->td_ucred, td);
669 			if (error)
670 				break;
671 			fdrop(fp, td);
672 			c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
673 			c = bios.c_cc[c];
674 			if (c != _POSIX_VDISABLE) {
675 				wr.fd = args->fd;
676 				wr.buf = &c;
677 				wr.nbyte = sizeof(c);
678 				return (write(td, &wr));
679 			} else
680 				return (0);
681 		}
682 		default:
683 			fdrop(fp, td);
684 			return (EINVAL);
685 		}
686 		args->arg = 0;
687 		error = (ioctl(td, (struct ioctl_args *)args));
688 		break;
689 	}
690 
691 	case LINUX_TCFLSH: {
692 		args->cmd = TIOCFLUSH;
693 		switch (args->arg) {
694 		case LINUX_TCIFLUSH:
695 			args->arg = FREAD;
696 			break;
697 		case LINUX_TCOFLUSH:
698 			args->arg = FWRITE;
699 			break;
700 		case LINUX_TCIOFLUSH:
701 			args->arg = FREAD | FWRITE;
702 			break;
703 		default:
704 			fdrop(fp, td);
705 			return (EINVAL);
706 		}
707 		error = (ioctl(td, (struct ioctl_args *)args));
708 		break;
709 	}
710 
711 	case LINUX_TIOCEXCL:
712 		args->cmd = TIOCEXCL;
713 		error = (ioctl(td, (struct ioctl_args *)args));
714 		break;
715 
716 	case LINUX_TIOCNXCL:
717 		args->cmd = TIOCNXCL;
718 		error = (ioctl(td, (struct ioctl_args *)args));
719 		break;
720 
721 	case LINUX_TIOCSCTTY:
722 		args->cmd = TIOCSCTTY;
723 		error = (ioctl(td, (struct ioctl_args *)args));
724 		break;
725 
726 	case LINUX_TIOCGPGRP:
727 		args->cmd = TIOCGPGRP;
728 		error = (ioctl(td, (struct ioctl_args *)args));
729 		break;
730 
731 	case LINUX_TIOCSPGRP:
732 		args->cmd = TIOCSPGRP;
733 		error = (ioctl(td, (struct ioctl_args *)args));
734 		break;
735 
736 	/* LINUX_TIOCOUTQ */
737 	/* LINUX_TIOCSTI */
738 
739 	case LINUX_TIOCGWINSZ:
740 		args->cmd = TIOCGWINSZ;
741 		error = (ioctl(td, (struct ioctl_args *)args));
742 		break;
743 
744 	case LINUX_TIOCSWINSZ:
745 		args->cmd = TIOCSWINSZ;
746 		error = (ioctl(td, (struct ioctl_args *)args));
747 		break;
748 
749 	case LINUX_TIOCMGET:
750 		args->cmd = TIOCMGET;
751 		error = (ioctl(td, (struct ioctl_args *)args));
752 		break;
753 
754 	case LINUX_TIOCMBIS:
755 		args->cmd = TIOCMBIS;
756 		error = (ioctl(td, (struct ioctl_args *)args));
757 		break;
758 
759 	case LINUX_TIOCMBIC:
760 		args->cmd = TIOCMBIC;
761 		error = (ioctl(td, (struct ioctl_args *)args));
762 		break;
763 
764 	case LINUX_TIOCMSET:
765 		args->cmd = TIOCMSET;
766 		error = (ioctl(td, (struct ioctl_args *)args));
767 		break;
768 
769 	/* TIOCGSOFTCAR */
770 	/* TIOCSSOFTCAR */
771 
772 	case LINUX_FIONREAD: /* LINUX_TIOCINQ */
773 		args->cmd = FIONREAD;
774 		error = (ioctl(td, (struct ioctl_args *)args));
775 		break;
776 
777 	/* LINUX_TIOCLINUX */
778 
779 	case LINUX_TIOCCONS:
780 		args->cmd = TIOCCONS;
781 		error = (ioctl(td, (struct ioctl_args *)args));
782 		break;
783 
784 	case LINUX_TIOCGSERIAL: {
785 		struct linux_serial_struct lss;
786 		lss.type = LINUX_PORT_16550A;
787 		lss.flags = 0;
788 		lss.close_delay = 0;
789 		error = copyout(&lss, (void *)args->arg, sizeof(lss));
790 		break;
791 	}
792 
793 	case LINUX_TIOCSSERIAL: {
794 		struct linux_serial_struct lss;
795 		error = copyin((void *)args->arg, &lss, sizeof(lss));
796 		if (error)
797 			break;
798 		/* XXX - It really helps to have an implementation that
799 		 * does nothing. NOT!
800 		 */
801 		error = 0;
802 		break;
803 	}
804 
805 	/* LINUX_TIOCPKT */
806 
807 	case LINUX_FIONBIO:
808 		args->cmd = FIONBIO;
809 		error = (ioctl(td, (struct ioctl_args *)args));
810 		break;
811 
812 	case LINUX_TIOCNOTTY:
813 		args->cmd = TIOCNOTTY;
814 		error = (ioctl(td, (struct ioctl_args *)args));
815 		break;
816 
817 	case LINUX_TIOCSETD: {
818 		int line;
819 		switch (args->arg) {
820 		case LINUX_N_TTY:
821 			line = TTYDISC;
822 			break;
823 		case LINUX_N_SLIP:
824 			line = SLIPDISC;
825 			break;
826 		case LINUX_N_PPP:
827 			line = PPPDISC;
828 			break;
829 		default:
830 			fdrop(fp, td);
831 			return (EINVAL);
832 		}
833 		error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
834 		    td));
835 		break;
836 	}
837 
838 	case LINUX_TIOCGETD: {
839 		int linux_line;
840 		int bsd_line = TTYDISC;
841 		error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
842 		    td->td_ucred, td);
843 		if (error)
844 			return (error);
845 		switch (bsd_line) {
846 		case TTYDISC:
847 			linux_line = LINUX_N_TTY;
848 			break;
849 		case SLIPDISC:
850 			linux_line = LINUX_N_SLIP;
851 			break;
852 		case PPPDISC:
853 			linux_line = LINUX_N_PPP;
854 			break;
855 		default:
856 			fdrop(fp, td);
857 			return (EINVAL);
858 		}
859 		error = (copyout(&linux_line, (void *)args->arg, sizeof(int)));
860 		break;
861 	}
862 
863 	/* LINUX_TCSBRKP */
864 	/* LINUX_TIOCTTYGSTRUCT */
865 
866 	case LINUX_FIONCLEX:
867 		args->cmd = FIONCLEX;
868 		error = (ioctl(td, (struct ioctl_args *)args));
869 		break;
870 
871 	case LINUX_FIOCLEX:
872 		args->cmd = FIOCLEX;
873 		error = (ioctl(td, (struct ioctl_args *)args));
874 		break;
875 
876 	case LINUX_FIOASYNC:
877 		args->cmd = FIOASYNC;
878 		error = (ioctl(td, (struct ioctl_args *)args));
879 		break;
880 
881 	/* LINUX_TIOCSERCONFIG */
882 	/* LINUX_TIOCSERGWILD */
883 	/* LINUX_TIOCSERSWILD */
884 	/* LINUX_TIOCGLCKTRMIOS */
885 	/* LINUX_TIOCSLCKTRMIOS */
886 
887 	default:
888 		error = ENOIOCTL;
889 		break;
890 	}
891 
892 	fdrop(fp, td);
893 	return (error);
894 }
895 
896 /*
897  * CDROM related ioctls
898  */
899 
900 struct linux_cdrom_msf
901 {
902 	u_char	cdmsf_min0;
903 	u_char	cdmsf_sec0;
904 	u_char	cdmsf_frame0;
905 	u_char	cdmsf_min1;
906 	u_char	cdmsf_sec1;
907 	u_char	cdmsf_frame1;
908 };
909 
910 struct linux_cdrom_tochdr
911 {
912 	u_char	cdth_trk0;
913 	u_char	cdth_trk1;
914 };
915 
916 union linux_cdrom_addr
917 {
918 	struct {
919 		u_char	minute;
920 		u_char	second;
921 		u_char	frame;
922 	} msf;
923 	int	lba;
924 };
925 
926 struct linux_cdrom_tocentry
927 {
928 	u_char	cdte_track;
929 	u_char	cdte_adr:4;
930 	u_char	cdte_ctrl:4;
931 	u_char	cdte_format;
932 	union linux_cdrom_addr cdte_addr;
933 	u_char	cdte_datamode;
934 };
935 
936 struct linux_cdrom_subchnl
937 {
938 	u_char	cdsc_format;
939 	u_char	cdsc_audiostatus;
940 	u_char	cdsc_adr:4;
941 	u_char	cdsc_ctrl:4;
942 	u_char	cdsc_trk;
943 	u_char	cdsc_ind;
944 	union linux_cdrom_addr cdsc_absaddr;
945 	union linux_cdrom_addr cdsc_reladdr;
946 };
947 
948 struct l_cdrom_read_audio {
949 	union linux_cdrom_addr addr;
950 	u_char		addr_format;
951 	l_int		nframes;
952 	u_char		*buf;
953 };
954 
955 struct l_dvd_layer {
956 	u_char		book_version:4;
957 	u_char		book_type:4;
958 	u_char		min_rate:4;
959 	u_char		disc_size:4;
960 	u_char		layer_type:4;
961 	u_char		track_path:1;
962 	u_char		nlayers:2;
963 	u_char		track_density:4;
964 	u_char		linear_density:4;
965 	u_char		bca:1;
966 	u_int32_t	start_sector;
967 	u_int32_t	end_sector;
968 	u_int32_t	end_sector_l0;
969 };
970 
971 struct l_dvd_physical {
972 	u_char		type;
973 	u_char		layer_num;
974 	struct l_dvd_layer layer[4];
975 };
976 
977 struct l_dvd_copyright {
978 	u_char		type;
979 	u_char		layer_num;
980 	u_char		cpst;
981 	u_char		rmi;
982 };
983 
984 struct l_dvd_disckey {
985 	u_char		type;
986 	l_uint		agid:2;
987 	u_char		value[2048];
988 };
989 
990 struct l_dvd_bca {
991 	u_char		type;
992 	l_int		len;
993 	u_char		value[188];
994 };
995 
996 struct l_dvd_manufact {
997 	u_char		type;
998 	u_char		layer_num;
999 	l_int		len;
1000 	u_char		value[2048];
1001 };
1002 
1003 typedef union {
1004 	u_char			type;
1005 	struct l_dvd_physical	physical;
1006 	struct l_dvd_copyright	copyright;
1007 	struct l_dvd_disckey	disckey;
1008 	struct l_dvd_bca	bca;
1009 	struct l_dvd_manufact	manufact;
1010 } l_dvd_struct;
1011 
1012 typedef u_char l_dvd_key[5];
1013 typedef u_char l_dvd_challenge[10];
1014 
1015 struct l_dvd_lu_send_agid {
1016 	u_char		type;
1017 	l_uint		agid:2;
1018 };
1019 
1020 struct l_dvd_host_send_challenge {
1021 	u_char		type;
1022 	l_uint		agid:2;
1023 	l_dvd_challenge	chal;
1024 };
1025 
1026 struct l_dvd_send_key {
1027 	u_char		type;
1028 	l_uint		agid:2;
1029 	l_dvd_key	key;
1030 };
1031 
1032 struct l_dvd_lu_send_challenge {
1033 	u_char		type;
1034 	l_uint		agid:2;
1035 	l_dvd_challenge	chal;
1036 };
1037 
1038 struct l_dvd_lu_send_title_key {
1039 	u_char		type;
1040 	l_uint		agid:2;
1041 	l_dvd_key	title_key;
1042 	l_int		lba;
1043 	l_uint		cpm:1;
1044 	l_uint		cp_sec:1;
1045 	l_uint		cgms:2;
1046 };
1047 
1048 struct l_dvd_lu_send_asf {
1049 	u_char		type;
1050 	l_uint		agid:2;
1051 	l_uint		asf:1;
1052 };
1053 
1054 struct l_dvd_host_send_rpcstate {
1055 	u_char		type;
1056 	u_char		pdrc;
1057 };
1058 
1059 struct l_dvd_lu_send_rpcstate {
1060 	u_char		type:2;
1061 	u_char		vra:3;
1062 	u_char		ucca:3;
1063 	u_char		region_mask;
1064 	u_char		rpc_scheme;
1065 };
1066 
1067 typedef union {
1068 	u_char				type;
1069 	struct l_dvd_lu_send_agid	lsa;
1070 	struct l_dvd_host_send_challenge hsc;
1071 	struct l_dvd_send_key		lsk;
1072 	struct l_dvd_lu_send_challenge	lsc;
1073 	struct l_dvd_send_key		hsk;
1074 	struct l_dvd_lu_send_title_key	lstk;
1075 	struct l_dvd_lu_send_asf	lsasf;
1076 	struct l_dvd_host_send_rpcstate	hrpcs;
1077 	struct l_dvd_lu_send_rpcstate	lrpcs;
1078 } l_dvd_authinfo;
1079 
1080 static void
1081 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
1082 {
1083 	if (af == CD_LBA_FORMAT)
1084 		lp->lba = bp->lba;
1085 	else {
1086 		lp->msf.minute = bp->msf.minute;
1087 		lp->msf.second = bp->msf.second;
1088 		lp->msf.frame = bp->msf.frame;
1089 	}
1090 }
1091 
1092 static void
1093 linux_to_bsd_msf_lba(u_char af, union linux_cdrom_addr *lp, union msf_lba *bp)
1094 {
1095 	if (af == CD_LBA_FORMAT)
1096 		bp->lba = lp->lba;
1097 	else {
1098 		bp->msf.minute = lp->msf.minute;
1099 		bp->msf.second = lp->msf.second;
1100 		bp->msf.frame = lp->msf.frame;
1101 	}
1102 }
1103 
1104 static void
1105 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
1106 {
1107 	if (format == LINUX_CDROM_MSF) {
1108 		addr->msf.frame = lba % 75;
1109 		lba /= 75;
1110 		lba += 2;
1111 		addr->msf.second = lba % 60;
1112 		addr->msf.minute = lba / 60;
1113 	} else
1114 		addr->lba = lba;
1115 }
1116 
1117 static int
1118 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
1119 {
1120 	bp->format = lp->type;
1121 	switch (bp->format) {
1122 	case DVD_STRUCT_PHYSICAL:
1123 		if (bp->layer_num >= 4)
1124 			return (EINVAL);
1125 		bp->layer_num = lp->physical.layer_num;
1126 		break;
1127 	case DVD_STRUCT_COPYRIGHT:
1128 		bp->layer_num = lp->copyright.layer_num;
1129 		break;
1130 	case DVD_STRUCT_DISCKEY:
1131 		bp->agid = lp->disckey.agid;
1132 		break;
1133 	case DVD_STRUCT_BCA:
1134 	case DVD_STRUCT_MANUFACT:
1135 		break;
1136 	default:
1137 		return (EINVAL);
1138 	}
1139 	return (0);
1140 }
1141 
1142 static int
1143 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
1144 {
1145 	switch (bp->format) {
1146 	case DVD_STRUCT_PHYSICAL: {
1147 		struct dvd_layer *blp = (struct dvd_layer *)bp->data;
1148 		struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
1149 		memset(llp, 0, sizeof(*llp));
1150 		llp->book_version = blp->book_version;
1151 		llp->book_type = blp->book_type;
1152 		llp->min_rate = blp->max_rate;
1153 		llp->disc_size = blp->disc_size;
1154 		llp->layer_type = blp->layer_type;
1155 		llp->track_path = blp->track_path;
1156 		llp->nlayers = blp->nlayers;
1157 		llp->track_density = blp->track_density;
1158 		llp->linear_density = blp->linear_density;
1159 		llp->bca = blp->bca;
1160 		llp->start_sector = blp->start_sector;
1161 		llp->end_sector = blp->end_sector;
1162 		llp->end_sector_l0 = blp->end_sector_l0;
1163 		break;
1164 	}
1165 	case DVD_STRUCT_COPYRIGHT:
1166 		lp->copyright.cpst = bp->cpst;
1167 		lp->copyright.rmi = bp->rmi;
1168 		break;
1169 	case DVD_STRUCT_DISCKEY:
1170 		memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
1171 		break;
1172 	case DVD_STRUCT_BCA:
1173 		lp->bca.len = bp->length;
1174 		memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
1175 		break;
1176 	case DVD_STRUCT_MANUFACT:
1177 		lp->manufact.len = bp->length;
1178 		memcpy(lp->manufact.value, bp->data,
1179 		    sizeof(lp->manufact.value));
1180 		/* lp->manufact.layer_num is unused in linux (redhat 7.0) */
1181 		break;
1182 	default:
1183 		return (EINVAL);
1184 	}
1185 	return (0);
1186 }
1187 
1188 static int
1189 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
1190     struct dvd_authinfo *bp)
1191 {
1192 	switch (lp->type) {
1193 	case LINUX_DVD_LU_SEND_AGID:
1194 		*bcode = DVDIOCREPORTKEY;
1195 		bp->format = DVD_REPORT_AGID;
1196 		bp->agid = lp->lsa.agid;
1197 		break;
1198 	case LINUX_DVD_HOST_SEND_CHALLENGE:
1199 		*bcode = DVDIOCSENDKEY;
1200 		bp->format = DVD_SEND_CHALLENGE;
1201 		bp->agid = lp->hsc.agid;
1202 		memcpy(bp->keychal, lp->hsc.chal, 10);
1203 		break;
1204 	case LINUX_DVD_LU_SEND_KEY1:
1205 		*bcode = DVDIOCREPORTKEY;
1206 		bp->format = DVD_REPORT_KEY1;
1207 		bp->agid = lp->lsk.agid;
1208 		break;
1209 	case LINUX_DVD_LU_SEND_CHALLENGE:
1210 		*bcode = DVDIOCREPORTKEY;
1211 		bp->format = DVD_REPORT_CHALLENGE;
1212 		bp->agid = lp->lsc.agid;
1213 		break;
1214 	case LINUX_DVD_HOST_SEND_KEY2:
1215 		*bcode = DVDIOCSENDKEY;
1216 		bp->format = DVD_SEND_KEY2;
1217 		bp->agid = lp->hsk.agid;
1218 		memcpy(bp->keychal, lp->hsk.key, 5);
1219 		break;
1220 	case LINUX_DVD_LU_SEND_TITLE_KEY:
1221 		*bcode = DVDIOCREPORTKEY;
1222 		bp->format = DVD_REPORT_TITLE_KEY;
1223 		bp->agid = lp->lstk.agid;
1224 		bp->lba = lp->lstk.lba;
1225 		break;
1226 	case LINUX_DVD_LU_SEND_ASF:
1227 		*bcode = DVDIOCREPORTKEY;
1228 		bp->format = DVD_REPORT_ASF;
1229 		bp->agid = lp->lsasf.agid;
1230 		break;
1231 	case LINUX_DVD_INVALIDATE_AGID:
1232 		*bcode = DVDIOCREPORTKEY;
1233 		bp->format = DVD_INVALIDATE_AGID;
1234 		bp->agid = lp->lsa.agid;
1235 		break;
1236 	case LINUX_DVD_LU_SEND_RPC_STATE:
1237 		*bcode = DVDIOCREPORTKEY;
1238 		bp->format = DVD_REPORT_RPC;
1239 		break;
1240 	case LINUX_DVD_HOST_SEND_RPC_STATE:
1241 		*bcode = DVDIOCSENDKEY;
1242 		bp->format = DVD_SEND_RPC;
1243 		bp->region = lp->hrpcs.pdrc;
1244 		break;
1245 	default:
1246 		return (EINVAL);
1247 	}
1248 	return (0);
1249 }
1250 
1251 static int
1252 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
1253 {
1254 	switch (lp->type) {
1255 	case LINUX_DVD_LU_SEND_AGID:
1256 		lp->lsa.agid = bp->agid;
1257 		break;
1258 	case LINUX_DVD_HOST_SEND_CHALLENGE:
1259 		lp->type = LINUX_DVD_LU_SEND_KEY1;
1260 		break;
1261 	case LINUX_DVD_LU_SEND_KEY1:
1262 		memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
1263 		break;
1264 	case LINUX_DVD_LU_SEND_CHALLENGE:
1265 		memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
1266 		break;
1267 	case LINUX_DVD_HOST_SEND_KEY2:
1268 		lp->type = LINUX_DVD_AUTH_ESTABLISHED;
1269 		break;
1270 	case LINUX_DVD_LU_SEND_TITLE_KEY:
1271 		memcpy(lp->lstk.title_key, bp->keychal,
1272 		    sizeof(lp->lstk.title_key));
1273 		lp->lstk.cpm = bp->cpm;
1274 		lp->lstk.cp_sec = bp->cp_sec;
1275 		lp->lstk.cgms = bp->cgms;
1276 		break;
1277 	case LINUX_DVD_LU_SEND_ASF:
1278 		lp->lsasf.asf = bp->asf;
1279 		break;
1280 	case LINUX_DVD_INVALIDATE_AGID:
1281 		break;
1282 	case LINUX_DVD_LU_SEND_RPC_STATE:
1283 		lp->lrpcs.type = bp->reg_type;
1284 		lp->lrpcs.vra = bp->vend_rsts;
1285 		lp->lrpcs.ucca = bp->user_rsts;
1286 		lp->lrpcs.region_mask = bp->region;
1287 		lp->lrpcs.rpc_scheme = bp->rpc_scheme;
1288 		break;
1289 	case LINUX_DVD_HOST_SEND_RPC_STATE:
1290 		break;
1291 	default:
1292 		return (EINVAL);
1293 	}
1294 	return (0);
1295 }
1296 
1297 static int
1298 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
1299 {
1300 	struct file *fp;
1301 	int error;
1302 
1303 	if ((error = fget(td, args->fd, &fp)) != 0)
1304 		return (error);
1305 	switch (args->cmd & 0xffff) {
1306 
1307 	case LINUX_CDROMPAUSE:
1308 		args->cmd = CDIOCPAUSE;
1309 		error = (ioctl(td, (struct ioctl_args *)args));
1310 		break;
1311 
1312 	case LINUX_CDROMRESUME:
1313 		args->cmd = CDIOCRESUME;
1314 		error = (ioctl(td, (struct ioctl_args *)args));
1315 		break;
1316 
1317 	case LINUX_CDROMPLAYMSF:
1318 		args->cmd = CDIOCPLAYMSF;
1319 		error = (ioctl(td, (struct ioctl_args *)args));
1320 		break;
1321 
1322 	case LINUX_CDROMPLAYTRKIND:
1323 		args->cmd = CDIOCPLAYTRACKS;
1324 		error = (ioctl(td, (struct ioctl_args *)args));
1325 		break;
1326 
1327 	case LINUX_CDROMREADTOCHDR: {
1328 		struct ioc_toc_header th;
1329 		struct linux_cdrom_tochdr lth;
1330 		error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
1331 		    td->td_ucred, td);
1332 		if (!error) {
1333 			lth.cdth_trk0 = th.starting_track;
1334 			lth.cdth_trk1 = th.ending_track;
1335 			copyout(&lth, (void *)args->arg, sizeof(lth));
1336 		}
1337 		break;
1338 	}
1339 
1340 	case LINUX_CDROMREADTOCENTRY: {
1341 		struct linux_cdrom_tocentry lte, *ltep =
1342 		    (struct linux_cdrom_tocentry *)args->arg;
1343 		struct ioc_read_toc_single_entry irtse;
1344 		irtse.address_format = ltep->cdte_format;
1345 		irtse.track = ltep->cdte_track;
1346 		error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
1347 		    td->td_ucred, td);
1348 		if (!error) {
1349 			lte = *ltep;
1350 			lte.cdte_ctrl = irtse.entry.control;
1351 			lte.cdte_adr = irtse.entry.addr_type;
1352 			bsd_to_linux_msf_lba(irtse.address_format,
1353 			    &irtse.entry.addr, &lte.cdte_addr);
1354 			copyout(&lte, (void *)args->arg, sizeof(lte));
1355 		}
1356 		break;
1357 	}
1358 
1359 	case LINUX_CDROMSTOP:
1360 		args->cmd = CDIOCSTOP;
1361 		error = (ioctl(td, (struct ioctl_args *)args));
1362 		break;
1363 
1364 	case LINUX_CDROMSTART:
1365 		args->cmd = CDIOCSTART;
1366 		error = (ioctl(td, (struct ioctl_args *)args));
1367 		break;
1368 
1369 	case LINUX_CDROMEJECT:
1370 		args->cmd = CDIOCEJECT;
1371 		error = (ioctl(td, (struct ioctl_args *)args));
1372 		break;
1373 
1374 	/* LINUX_CDROMVOLCTRL */
1375 
1376 	case LINUX_CDROMSUBCHNL: {
1377 		struct linux_cdrom_subchnl sc;
1378 		struct ioc_read_subchannel bsdsc;
1379 		struct cd_sub_channel_info *bsdinfo;
1380 		caddr_t sg = stackgap_init();
1381 		bsdinfo = stackgap_alloc(&sg, sizeof(*bsdinfo));
1382 		bsdsc.address_format = CD_LBA_FORMAT;
1383 		bsdsc.data_format = CD_CURRENT_POSITION;
1384 		bsdsc.track = 0;
1385 		bsdsc.data_len = sizeof(*bsdinfo);
1386 		bsdsc.data = bsdinfo;
1387 		error = fo_ioctl(fp, CDIOCREADSUBCHANNEL, (caddr_t)&bsdsc,
1388 		    td->td_ucred, td);
1389 		if (error)
1390 			break;
1391 		error = copyin((void *)args->arg, &sc, sizeof(sc));
1392 		if (error)
1393 			break;
1394 		sc.cdsc_audiostatus = bsdinfo->header.audio_status;
1395 		sc.cdsc_adr = bsdinfo->what.position.addr_type;
1396 		sc.cdsc_ctrl = bsdinfo->what.position.control;
1397 		sc.cdsc_trk = bsdinfo->what.position.track_number;
1398 		sc.cdsc_ind = bsdinfo->what.position.index_number;
1399 		set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
1400 		    bsdinfo->what.position.absaddr.lba);
1401 		set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
1402 		    bsdinfo->what.position.reladdr.lba);
1403 		error = copyout(&sc, (void *)args->arg, sizeof(sc));
1404 		break;
1405 	}
1406 
1407 	/* LINUX_CDROMREADMODE2 */
1408 	/* LINUX_CDROMREADMODE1 */
1409 
1410 	case LINUX_CDROMREADAUDIO: {
1411 		struct l_cdrom_read_audio lra;
1412 		struct ioc_read_audio bra;
1413 
1414 		error = copyin((void *)args->arg, &lra, sizeof(lra));
1415 		if (error)
1416 			break;
1417 		bra.address_format = lra.addr_format;
1418 		linux_to_bsd_msf_lba(bra.address_format, &lra.addr,
1419 		    &bra.address);
1420 		bra.nframes = lra.nframes;
1421 		bra.buffer = lra.buf;
1422 		error = fo_ioctl(fp, CDIOCREADAUDIO, (caddr_t)&bra,
1423 		    td->td_ucred, td);
1424 		break;
1425 	}
1426 
1427 	/* LINUX_CDROMEJECT_SW */
1428 	/* LINUX_CDROMMULTISESSION */
1429 	/* LINUX_CDROM_GET_UPC */
1430 
1431 	case LINUX_CDROMRESET:
1432 		args->cmd = CDIOCRESET;
1433 		error = (ioctl(td, (struct ioctl_args *)args));
1434 		break;
1435 
1436 	/* LINUX_CDROMVOLREAD */
1437 	/* LINUX_CDROMREADRAW */
1438 	/* LINUX_CDROMREADCOOKED */
1439 	/* LINUX_CDROMSEEK */
1440 	/* LINUX_CDROMPLAYBLK */
1441 	/* LINUX_CDROMREADALL */
1442 	/* LINUX_CDROMCLOSETRAY */
1443 	/* LINUX_CDROMLOADFROMSLOT */
1444 	/* LINUX_CDROMGETSPINDOWN */
1445 	/* LINUX_CDROMSETSPINDOWN */
1446 	/* LINUX_CDROM_SET_OPTIONS */
1447 	/* LINUX_CDROM_CLEAR_OPTIONS */
1448 	/* LINUX_CDROM_SELECT_SPEED */
1449 	/* LINUX_CDROM_SELECT_DISC */
1450 	/* LINUX_CDROM_MEDIA_CHANGED */
1451 	/* LINUX_CDROM_DRIVE_STATUS */
1452 	/* LINUX_CDROM_DISC_STATUS */
1453 	/* LINUX_CDROM_CHANGER_NSLOTS */
1454 	/* LINUX_CDROM_LOCKDOOR */
1455 	/* LINUX_CDROM_DEBUG */
1456 	/* LINUX_CDROM_GET_CAPABILITY */
1457 	/* LINUX_CDROMAUDIOBUFSIZ */
1458 
1459 	case LINUX_DVD_READ_STRUCT: {
1460 		l_dvd_struct lds;
1461 		struct dvd_struct bds;
1462 
1463 		error = copyin((void *)args->arg, &lds, sizeof(lds));
1464 		if (error)
1465 			break;
1466 		error = linux_to_bsd_dvd_struct(&lds, &bds);
1467 		if (error)
1468 			break;
1469 		error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)&bds,
1470 		    td->td_ucred, td);
1471 		if (error)
1472 			break;
1473 		error = bsd_to_linux_dvd_struct(&bds, &lds);
1474 		if (error)
1475 			break;
1476 		error = copyout(&lds, (void *)args->arg, sizeof(lds));
1477 		break;
1478 	}
1479 
1480 	/* LINUX_DVD_WRITE_STRUCT */
1481 
1482 	case LINUX_DVD_AUTH: {
1483 		l_dvd_authinfo lda;
1484 		struct dvd_authinfo bda;
1485 		int bcode;
1486 
1487 		error = copyin((void *)args->arg, &lda, sizeof(lda));
1488 		if (error)
1489 			break;
1490 		error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
1491 		if (error)
1492 			break;
1493 		error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
1494 		    td);
1495 		if (error) {
1496 			if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
1497 				lda.type = LINUX_DVD_AUTH_FAILURE;
1498 				copyout(&lda, (void *)args->arg, sizeof(lda));
1499 			}
1500 			break;
1501 		}
1502 		error = bsd_to_linux_dvd_authinfo(&bda, &lda);
1503 		if (error)
1504 			break;
1505 		error = copyout(&lda, (void *)args->arg, sizeof(lda));
1506 		break;
1507 	}
1508 
1509 	/* LINUX_CDROM_SEND_PACKET */
1510 	/* LINUX_CDROM_NEXT_WRITABLE */
1511 	/* LINUX_CDROM_LAST_WRITTEN */
1512 
1513 	default:
1514 		error = ENOIOCTL;
1515 		break;
1516 	}
1517 
1518 	fdrop(fp, td);
1519 	return (error);
1520 }
1521 
1522 static int
1523 linux_ioctl_vfat(struct thread *td, struct linux_ioctl_args *args)
1524 {
1525 
1526 	return (ENOTTY);
1527 }
1528 
1529 /*
1530  * Sound related ioctls
1531  */
1532 
1533 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
1534 
1535 #define	SETDIR(c)	(((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
1536 
1537 static int
1538 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
1539 {
1540 
1541 	switch (args->cmd & 0xffff) {
1542 
1543 	case LINUX_SOUND_MIXER_WRITE_VOLUME:
1544 		args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
1545 		return (ioctl(td, (struct ioctl_args *)args));
1546 
1547 	case LINUX_SOUND_MIXER_WRITE_BASS:
1548 		args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
1549 		return (ioctl(td, (struct ioctl_args *)args));
1550 
1551 	case LINUX_SOUND_MIXER_WRITE_TREBLE:
1552 		args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
1553 		return (ioctl(td, (struct ioctl_args *)args));
1554 
1555 	case LINUX_SOUND_MIXER_WRITE_SYNTH:
1556 		args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
1557 		return (ioctl(td, (struct ioctl_args *)args));
1558 
1559 	case LINUX_SOUND_MIXER_WRITE_PCM:
1560 		args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
1561 		return (ioctl(td, (struct ioctl_args *)args));
1562 
1563 	case LINUX_SOUND_MIXER_WRITE_SPEAKER:
1564 		args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
1565 		return (ioctl(td, (struct ioctl_args *)args));
1566 
1567 	case LINUX_SOUND_MIXER_WRITE_LINE:
1568 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
1569 		return (ioctl(td, (struct ioctl_args *)args));
1570 
1571 	case LINUX_SOUND_MIXER_WRITE_MIC:
1572 		args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
1573 		return (ioctl(td, (struct ioctl_args *)args));
1574 
1575 	case LINUX_SOUND_MIXER_WRITE_CD:
1576 		args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
1577 		return (ioctl(td, (struct ioctl_args *)args));
1578 
1579 	case LINUX_SOUND_MIXER_WRITE_IMIX:
1580 		args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
1581 		return (ioctl(td, (struct ioctl_args *)args));
1582 
1583 	case LINUX_SOUND_MIXER_WRITE_ALTPCM:
1584 		args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
1585 		return (ioctl(td, (struct ioctl_args *)args));
1586 
1587 	case LINUX_SOUND_MIXER_WRITE_RECLEV:
1588 		args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
1589 		return (ioctl(td, (struct ioctl_args *)args));
1590 
1591 	case LINUX_SOUND_MIXER_WRITE_IGAIN:
1592 		args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
1593 		return (ioctl(td, (struct ioctl_args *)args));
1594 
1595 	case LINUX_SOUND_MIXER_WRITE_OGAIN:
1596 		args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
1597 		return (ioctl(td, (struct ioctl_args *)args));
1598 
1599 	case LINUX_SOUND_MIXER_WRITE_LINE1:
1600 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
1601 		return (ioctl(td, (struct ioctl_args *)args));
1602 
1603 	case LINUX_SOUND_MIXER_WRITE_LINE2:
1604 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
1605 		return (ioctl(td, (struct ioctl_args *)args));
1606 
1607 	case LINUX_SOUND_MIXER_WRITE_LINE3:
1608 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
1609 		return (ioctl(td, (struct ioctl_args *)args));
1610 
1611 	case LINUX_OSS_GETVERSION: {
1612 		int version = linux_get_oss_version(td);
1613 		return (copyout(&version, (void *)args->arg, sizeof(int)));
1614 	}
1615 
1616 	case LINUX_SOUND_MIXER_READ_STEREODEVS:
1617 		args->cmd = SOUND_MIXER_READ_STEREODEVS;
1618 		return (ioctl(td, (struct ioctl_args *)args));
1619 
1620 	case LINUX_SOUND_MIXER_READ_DEVMASK:
1621 		args->cmd = SOUND_MIXER_READ_DEVMASK;
1622 		return (ioctl(td, (struct ioctl_args *)args));
1623 
1624 	case LINUX_SOUND_MIXER_WRITE_RECSRC:
1625 		args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
1626 		return (ioctl(td, (struct ioctl_args *)args));
1627 
1628 	case LINUX_SNDCTL_DSP_RESET:
1629 		args->cmd = SNDCTL_DSP_RESET;
1630 		return (ioctl(td, (struct ioctl_args *)args));
1631 
1632 	case LINUX_SNDCTL_DSP_SYNC:
1633 		args->cmd = SNDCTL_DSP_SYNC;
1634 		return (ioctl(td, (struct ioctl_args *)args));
1635 
1636 	case LINUX_SNDCTL_DSP_SPEED:
1637 		args->cmd = SNDCTL_DSP_SPEED;
1638 		return (ioctl(td, (struct ioctl_args *)args));
1639 
1640 	case LINUX_SNDCTL_DSP_STEREO:
1641 		args->cmd = SNDCTL_DSP_STEREO;
1642 		return (ioctl(td, (struct ioctl_args *)args));
1643 
1644 	case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
1645 		args->cmd = SNDCTL_DSP_GETBLKSIZE;
1646 		return (ioctl(td, (struct ioctl_args *)args));
1647 
1648 	case LINUX_SNDCTL_DSP_SETFMT:
1649 		args->cmd = SNDCTL_DSP_SETFMT;
1650 		return (ioctl(td, (struct ioctl_args *)args));
1651 
1652 	case LINUX_SOUND_PCM_WRITE_CHANNELS:
1653 		args->cmd = SOUND_PCM_WRITE_CHANNELS;
1654 		return (ioctl(td, (struct ioctl_args *)args));
1655 
1656 	case LINUX_SOUND_PCM_WRITE_FILTER:
1657 		args->cmd = SOUND_PCM_WRITE_FILTER;
1658 		return (ioctl(td, (struct ioctl_args *)args));
1659 
1660 	case LINUX_SNDCTL_DSP_POST:
1661 		args->cmd = SNDCTL_DSP_POST;
1662 		return (ioctl(td, (struct ioctl_args *)args));
1663 
1664 	case LINUX_SNDCTL_DSP_SUBDIVIDE:
1665 		args->cmd = SNDCTL_DSP_SUBDIVIDE;
1666 		return (ioctl(td, (struct ioctl_args *)args));
1667 
1668 	case LINUX_SNDCTL_DSP_SETFRAGMENT:
1669 		args->cmd = SNDCTL_DSP_SETFRAGMENT;
1670 		return (ioctl(td, (struct ioctl_args *)args));
1671 
1672 	case LINUX_SNDCTL_DSP_GETFMTS:
1673 		args->cmd = SNDCTL_DSP_GETFMTS;
1674 		return (ioctl(td, (struct ioctl_args *)args));
1675 
1676 	case LINUX_SNDCTL_DSP_GETOSPACE:
1677 		args->cmd = SNDCTL_DSP_GETOSPACE;
1678 		return (ioctl(td, (struct ioctl_args *)args));
1679 
1680 	case LINUX_SNDCTL_DSP_GETISPACE:
1681 		args->cmd = SNDCTL_DSP_GETISPACE;
1682 		return (ioctl(td, (struct ioctl_args *)args));
1683 
1684 	case LINUX_SNDCTL_DSP_NONBLOCK:
1685 		args->cmd = SNDCTL_DSP_NONBLOCK;
1686 		return (ioctl(td, (struct ioctl_args *)args));
1687 
1688 	case LINUX_SNDCTL_DSP_GETCAPS:
1689 		args->cmd = SNDCTL_DSP_GETCAPS;
1690 		return (ioctl(td, (struct ioctl_args *)args));
1691 
1692 	case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
1693 		args->cmd = SNDCTL_DSP_SETTRIGGER;
1694 		return (ioctl(td, (struct ioctl_args *)args));
1695 
1696 	case LINUX_SNDCTL_DSP_GETIPTR:
1697 		args->cmd = SNDCTL_DSP_GETIPTR;
1698 		return (ioctl(td, (struct ioctl_args *)args));
1699 
1700 	case LINUX_SNDCTL_DSP_GETOPTR:
1701 		args->cmd = SNDCTL_DSP_GETOPTR;
1702 		return (ioctl(td, (struct ioctl_args *)args));
1703 
1704 	case LINUX_SNDCTL_DSP_GETODELAY:
1705 		args->cmd = SNDCTL_DSP_GETODELAY;
1706 		return (ioctl(td, (struct ioctl_args *)args));
1707 
1708 	case LINUX_SNDCTL_SEQ_RESET:
1709 		args->cmd = SNDCTL_SEQ_RESET;
1710 		return (ioctl(td, (struct ioctl_args *)args));
1711 
1712 	case LINUX_SNDCTL_SEQ_SYNC:
1713 		args->cmd = SNDCTL_SEQ_SYNC;
1714 		return (ioctl(td, (struct ioctl_args *)args));
1715 
1716 	case LINUX_SNDCTL_SYNTH_INFO:
1717 		args->cmd = SNDCTL_SYNTH_INFO;
1718 		return (ioctl(td, (struct ioctl_args *)args));
1719 
1720 	case LINUX_SNDCTL_SEQ_CTRLRATE:
1721 		args->cmd = SNDCTL_SEQ_CTRLRATE;
1722 		return (ioctl(td, (struct ioctl_args *)args));
1723 
1724 	case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
1725 		args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
1726 		return (ioctl(td, (struct ioctl_args *)args));
1727 
1728 	case LINUX_SNDCTL_SEQ_GETINCOUNT:
1729 		args->cmd = SNDCTL_SEQ_GETINCOUNT;
1730 		return (ioctl(td, (struct ioctl_args *)args));
1731 
1732 	case LINUX_SNDCTL_SEQ_PERCMODE:
1733 		args->cmd = SNDCTL_SEQ_PERCMODE;
1734 		return (ioctl(td, (struct ioctl_args *)args));
1735 
1736 	case LINUX_SNDCTL_FM_LOAD_INSTR:
1737 		args->cmd = SNDCTL_FM_LOAD_INSTR;
1738 		return (ioctl(td, (struct ioctl_args *)args));
1739 
1740 	case LINUX_SNDCTL_SEQ_TESTMIDI:
1741 		args->cmd = SNDCTL_SEQ_TESTMIDI;
1742 		return (ioctl(td, (struct ioctl_args *)args));
1743 
1744 	case LINUX_SNDCTL_SEQ_RESETSAMPLES:
1745 		args->cmd = SNDCTL_SEQ_RESETSAMPLES;
1746 		return (ioctl(td, (struct ioctl_args *)args));
1747 
1748 	case LINUX_SNDCTL_SEQ_NRSYNTHS:
1749 		args->cmd = SNDCTL_SEQ_NRSYNTHS;
1750 		return (ioctl(td, (struct ioctl_args *)args));
1751 
1752 	case LINUX_SNDCTL_SEQ_NRMIDIS:
1753 		args->cmd = SNDCTL_SEQ_NRMIDIS;
1754 		return (ioctl(td, (struct ioctl_args *)args));
1755 
1756 	case LINUX_SNDCTL_MIDI_INFO:
1757 		args->cmd = SNDCTL_MIDI_INFO;
1758 		return (ioctl(td, (struct ioctl_args *)args));
1759 
1760 	case LINUX_SNDCTL_SEQ_TRESHOLD:
1761 		args->cmd = SNDCTL_SEQ_TRESHOLD;
1762 		return (ioctl(td, (struct ioctl_args *)args));
1763 
1764 	case LINUX_SNDCTL_SYNTH_MEMAVL:
1765 		args->cmd = SNDCTL_SYNTH_MEMAVL;
1766 		return (ioctl(td, (struct ioctl_args *)args));
1767 
1768 	}
1769 
1770 	return (ENOIOCTL);
1771 }
1772 
1773 /*
1774  * Console related ioctls
1775  */
1776 
1777 #define ISSIGVALID(sig)		((sig) > 0 && (sig) < NSIG)
1778 
1779 static int
1780 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
1781 {
1782 	struct file *fp;
1783 	int error;
1784 
1785 	if ((error = fget(td, args->fd, &fp)) != 0)
1786 		return (error);
1787 	switch (args->cmd & 0xffff) {
1788 
1789 	case LINUX_KIOCSOUND:
1790 		args->cmd = KIOCSOUND;
1791 		error = (ioctl(td, (struct ioctl_args *)args));
1792 		break;
1793 
1794 	case LINUX_KDMKTONE:
1795 		args->cmd = KDMKTONE;
1796 		error = (ioctl(td, (struct ioctl_args *)args));
1797 		break;
1798 
1799 	case LINUX_KDGETLED:
1800 		args->cmd = KDGETLED;
1801 		error = (ioctl(td, (struct ioctl_args *)args));
1802 		break;
1803 
1804 	case LINUX_KDSETLED:
1805 		args->cmd = KDSETLED;
1806 		error = (ioctl(td, (struct ioctl_args *)args));
1807 		break;
1808 
1809 	case LINUX_KDSETMODE:
1810 		args->cmd = KDSETMODE;
1811 		error = (ioctl(td, (struct ioctl_args *)args));
1812 		break;
1813 
1814 	case LINUX_KDGETMODE:
1815 		args->cmd = KDGETMODE;
1816 		error = (ioctl(td, (struct ioctl_args *)args));
1817 		break;
1818 
1819 	case LINUX_KDGKBMODE:
1820 		args->cmd = KDGKBMODE;
1821 		error = (ioctl(td, (struct ioctl_args *)args));
1822 		break;
1823 
1824 	case LINUX_KDSKBMODE: {
1825 		int kbdmode;
1826 		switch (args->arg) {
1827 		case LINUX_KBD_RAW:
1828 			kbdmode = K_RAW;
1829 			break;
1830 		case LINUX_KBD_XLATE:
1831 			kbdmode = K_XLATE;
1832 			break;
1833 		case LINUX_KBD_MEDIUMRAW:
1834 			kbdmode = K_RAW;
1835 			break;
1836 		default:
1837 			fdrop(fp, td);
1838 			return (EINVAL);
1839 		}
1840 		error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
1841 		    td->td_ucred, td));
1842 		break;
1843 	}
1844 
1845 	case LINUX_VT_OPENQRY:
1846 		args->cmd = VT_OPENQRY;
1847 		error = (ioctl(td, (struct ioctl_args *)args));
1848 		break;
1849 
1850 	case LINUX_VT_GETMODE:
1851 		args->cmd = VT_GETMODE;
1852 		error = (ioctl(td, (struct ioctl_args *)args));
1853 		break;
1854 
1855 	case LINUX_VT_SETMODE: {
1856 		struct vt_mode *mode;
1857 		args->cmd = VT_SETMODE;
1858 		mode = (struct vt_mode *)args->arg;
1859 		if (!ISSIGVALID(mode->frsig) && ISSIGVALID(mode->acqsig))
1860 			mode->frsig = mode->acqsig;
1861 		error = (ioctl(td, (struct ioctl_args *)args));
1862 		break;
1863 	}
1864 
1865 	case LINUX_VT_GETSTATE:
1866 		args->cmd = VT_GETACTIVE;
1867 		error = (ioctl(td, (struct ioctl_args *)args));
1868 		break;
1869 
1870 	case LINUX_VT_RELDISP:
1871 		args->cmd = VT_RELDISP;
1872 		error = (ioctl(td, (struct ioctl_args *)args));
1873 		break;
1874 
1875 	case LINUX_VT_ACTIVATE:
1876 		args->cmd = VT_ACTIVATE;
1877 		error = (ioctl(td, (struct ioctl_args *)args));
1878 		break;
1879 
1880 	case LINUX_VT_WAITACTIVE:
1881 		args->cmd = VT_WAITACTIVE;
1882 		error = (ioctl(td, (struct ioctl_args *)args));
1883 		break;
1884 
1885 	default:
1886 		error = ENOIOCTL;
1887 		break;
1888 	}
1889 
1890 	fdrop(fp, td);
1891 	return (error);
1892 }
1893 
1894 /*
1895  * Criteria for interface name translation
1896  */
1897 #define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
1898 
1899 /*
1900  * Interface function used by linprocfs (at the time of writing). It's not
1901  * used by the Linuxulator itself.
1902  */
1903 int
1904 linux_ifname(struct ifnet *ifp, char *buffer, size_t buflen)
1905 {
1906 	struct ifnet *ifscan;
1907 	int ethno;
1908 
1909 	/* Short-circuit non ethernet interfaces */
1910 	if (!IFP_IS_ETH(ifp))
1911 		return (snprintf(buffer, buflen, "%s%d", ifp->if_name,
1912 		    ifp->if_unit));
1913 
1914 	/* Determine the (relative) unit number for ethernet interfaces */
1915 	ethno = 0;
1916 	IFNET_RLOCK();
1917 	TAILQ_FOREACH(ifscan, &ifnet, if_link) {
1918 		if (ifscan == ifp) {
1919 			IFNET_RUNLOCK();
1920 			return (snprintf(buffer, buflen, "eth%d", ethno));
1921 		}
1922 		if (IFP_IS_ETH(ifscan))
1923 			ethno++;
1924 	}
1925 	IFNET_RUNLOCK();
1926 
1927 	return (0);
1928 }
1929 
1930 /*
1931  * Translate a Linux interface name to a FreeBSD interface name,
1932  * and return the associated ifnet structure
1933  * bsdname and lxname need to be least IFNAMSIZ bytes long, but
1934  * can point to the same buffer.
1935  */
1936 
1937 static struct ifnet *
1938 ifname_linux_to_bsd(const char *lxname, char *bsdname)
1939 {
1940 	struct ifnet *ifp;
1941 	int len, unit;
1942 	char *ep;
1943 	int is_eth, index;
1944 
1945 	for (len = 0; len < LINUX_IFNAMSIZ; ++len)
1946 		if (!isalpha(lxname[len]))
1947 			break;
1948 	if (len == 0 || len == LINUX_IFNAMSIZ)
1949 		return (NULL);
1950 	unit = (int)strtoul(lxname + len, &ep, 10);
1951 	if (ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ)
1952 		return (NULL);
1953 	index = 0;
1954 	is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
1955 	IFNET_RLOCK();
1956 	TAILQ_FOREACH(ifp, &ifnet, if_link) {
1957 		/*
1958 		 * Allow Linux programs to use FreeBSD names. Don't presume
1959 		 * we never have an interface named "eth", so don't make
1960 		 * the test optional based on is_eth.
1961 		 */
1962 		if (ifp->if_unit == unit && ifp->if_name[len] == '\0' &&
1963 		    strncmp(ifp->if_name, lxname, len) == 0)
1964 			break;
1965 		if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
1966 			break;
1967 	}
1968 	IFNET_RUNLOCK();
1969 	if (ifp != NULL)
1970 		snprintf(bsdname, IFNAMSIZ, "%s%d", ifp->if_name, ifp->if_unit);
1971 	return (ifp);
1972 }
1973 
1974 /*
1975  * Implement the SIOCGIFCONF ioctl
1976  */
1977 
1978 static int
1979 linux_ifconf(struct thread *td, struct ifconf *uifc)
1980 {
1981 	struct ifconf ifc;
1982 	struct l_ifreq ifr;
1983 	struct ifnet *ifp;
1984 	struct ifaddr *ifa;
1985 	struct iovec iov;
1986 	struct uio uio;
1987 	int error, ethno;
1988 
1989 	error = copyin(uifc, &ifc, sizeof(ifc));
1990 	if (error != 0)
1991 		return (error);
1992 
1993 	/* much easier to use uiomove than keep track ourselves */
1994 	iov.iov_base = ifc.ifc_buf;
1995 	iov.iov_len = ifc.ifc_len;
1996 	uio.uio_iov = &iov;
1997 	uio.uio_iovcnt = 1;
1998 	uio.uio_offset = 0;
1999 	uio.uio_resid = ifc.ifc_len;
2000 	uio.uio_segflg = UIO_USERSPACE;
2001 	uio.uio_rw = UIO_READ;
2002 	uio.uio_td = td;
2003 
2004 	/* Keep track of eth interfaces */
2005 	ethno = 0;
2006 
2007 	/* Return all AF_INET addresses of all interfaces */
2008 	IFNET_RLOCK();		/* could sleep XXX */
2009 	TAILQ_FOREACH(ifp, &ifnet, if_link) {
2010 		if (uio.uio_resid <= 0)
2011 			break;
2012 
2013 		bzero(&ifr, sizeof(ifr));
2014 		if (IFP_IS_ETH(ifp))
2015 			snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
2016 			    ethno++);
2017 		else
2018 			snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "%s%d",
2019 			    ifp->if_name, ifp->if_unit);
2020 
2021 		/* Walk the address list */
2022 		TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2023 			struct sockaddr *sa = ifa->ifa_addr;
2024 
2025 			if (uio.uio_resid <= 0)
2026 				break;
2027 
2028 			if (sa->sa_family == AF_INET) {
2029 				ifr.ifr_addr.sa_family = LINUX_AF_INET;
2030 				memcpy(ifr.ifr_addr.sa_data, sa->sa_data,
2031 				    sizeof(ifr.ifr_addr.sa_data));
2032 
2033 				error = uiomove(&ifr, sizeof(ifr), &uio);
2034 				if (error != 0) {
2035 					IFNET_RUNLOCK();
2036 					return (error);
2037 				}
2038 			}
2039 		}
2040 	}
2041 	IFNET_RUNLOCK();
2042 
2043 	ifc.ifc_len -= uio.uio_resid;
2044 	error = copyout(&ifc, uifc, sizeof(ifc));
2045 
2046 	return (error);
2047 }
2048 
2049 static int
2050 linux_gifflags(struct thread *td, struct ifnet *ifp, struct l_ifreq *ifr)
2051 {
2052 	l_short flags;
2053 
2054 	flags = ifp->if_flags & 0xffff;
2055 	/* these flags have no Linux equivalent */
2056 	flags &= ~(IFF_SMART|IFF_OACTIVE|IFF_SIMPLEX|
2057 	    IFF_LINK0|IFF_LINK1|IFF_LINK2);
2058 	/* Linux' multicast flag is in a different bit */
2059 	if (flags & IFF_MULTICAST) {
2060 		flags &= ~IFF_MULTICAST;
2061 		flags |= 0x1000;
2062 	}
2063 
2064 	return (copyout(&flags, &ifr->ifr_flags, sizeof(flags)));
2065 }
2066 
2067 #define ARPHRD_ETHER	1
2068 #define ARPHRD_LOOPBACK	772
2069 
2070 static int
2071 linux_gifhwaddr(struct ifnet *ifp, struct l_ifreq *ifr)
2072 {
2073 	struct ifaddr *ifa;
2074 	struct sockaddr_dl *sdl;
2075 	struct l_sockaddr lsa;
2076 
2077 	if (ifp->if_type == IFT_LOOP) {
2078 		bzero(&lsa, sizeof(lsa));
2079 		lsa.sa_family = ARPHRD_LOOPBACK;
2080 		return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
2081 	}
2082 
2083 	if (ifp->if_type != IFT_ETHER)
2084 		return (ENOENT);
2085 
2086 	TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2087 		sdl = (struct sockaddr_dl*)ifa->ifa_addr;
2088 		if (sdl != NULL && (sdl->sdl_family == AF_LINK) &&
2089 		    (sdl->sdl_type == IFT_ETHER)) {
2090 			bzero(&lsa, sizeof(lsa));
2091 			lsa.sa_family = ARPHRD_ETHER;
2092 			bcopy(LLADDR(sdl), lsa.sa_data, LINUX_IFHWADDRLEN);
2093 			return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof(lsa)));
2094 		}
2095 	}
2096 
2097 	return (ENOENT);
2098 }
2099 
2100 /*
2101  * Socket related ioctls
2102  */
2103 
2104 static int
2105 linux_ioctl_socket(struct thread *td, struct linux_ioctl_args *args)
2106 {
2107 	char lifname[LINUX_IFNAMSIZ], ifname[IFNAMSIZ];
2108 	struct ifnet *ifp;
2109 	struct file *fp;
2110 	int error, type;
2111 
2112 	KASSERT(LINUX_IFNAMSIZ == IFNAMSIZ,
2113 	    ("%s(): LINUX_IFNAMSIZ != IFNAMSIZ", __func__));
2114 
2115 	ifp = NULL;
2116 	error = 0;
2117 
2118 	if ((error = fget(td, args->fd, &fp)) != 0)
2119 		return (error);
2120 	type = fp->f_type;
2121 	fdrop(fp, td);
2122 	if (type != DTYPE_SOCKET) {
2123 		/* not a socket - probably a tap / vmnet device */
2124 		switch (args->cmd) {
2125 		case LINUX_SIOCGIFADDR:
2126 		case LINUX_SIOCSIFADDR:
2127 		case LINUX_SIOCGIFFLAGS:
2128 			return (linux_ioctl_special(td, args));
2129 		default:
2130 			return (ENOIOCTL);
2131 		}
2132 	}
2133 
2134 	switch (args->cmd & 0xffff) {
2135 
2136 	case LINUX_FIOGETOWN:
2137 	case LINUX_FIOSETOWN:
2138 	case LINUX_SIOCADDMULTI:
2139 	case LINUX_SIOCATMARK:
2140 	case LINUX_SIOCDELMULTI:
2141 	case LINUX_SIOCGIFCONF:
2142 	case LINUX_SIOCGPGRP:
2143 	case LINUX_SIOCSPGRP:
2144 		/* these ioctls don't take an interface name */
2145 #ifdef DEBUG
2146 		printf("%s(): ioctl %d\n", __func__,
2147 		    args->cmd & 0xffff);
2148 #endif
2149 		break;
2150 
2151 	case LINUX_SIOCGIFFLAGS:
2152 	case LINUX_SIOCGIFADDR:
2153 	case LINUX_SIOCSIFADDR:
2154 	case LINUX_SIOCGIFDSTADDR:
2155 	case LINUX_SIOCGIFBRDADDR:
2156 	case LINUX_SIOCGIFNETMASK:
2157 	case LINUX_SIOCSIFNETMASK:
2158 	case LINUX_SIOCGIFMTU:
2159 	case LINUX_SIOCSIFMTU:
2160 	case LINUX_SIOCSIFNAME:
2161 	case LINUX_SIOCGIFHWADDR:
2162 	case LINUX_SIOCSIFHWADDR:
2163 	case LINUX_SIOCDEVPRIVATE:
2164 	case LINUX_SIOCDEVPRIVATE+1:
2165 		/* copy in the interface name and translate it. */
2166 		error = copyin((void *)args->arg, lifname, LINUX_IFNAMSIZ);
2167 		if (error != 0)
2168 			return (error);
2169 #ifdef DEBUG
2170 		printf("%s(): ioctl %d on %.*s\n", __func__,
2171 		    args->cmd & 0xffff, LINUX_IFNAMSIZ, lifname);
2172 #endif
2173 		ifp = ifname_linux_to_bsd(lifname, ifname);
2174 		if (ifp == NULL)
2175 			return (EINVAL);
2176 		/*
2177 		 * We need to copy it back out in case we pass the
2178 		 * request on to our native ioctl(), which will expect
2179 		 * the ifreq to be in user space and have the correct
2180 		 * interface name.
2181 		 */
2182 		error = copyout(ifname, (void *)args->arg, IFNAMSIZ);
2183 		if (error != 0)
2184 			return (error);
2185 #ifdef DEBUG
2186 		printf("%s(): %s translated to %s\n", __func__,
2187 		    lifname, ifname);
2188 #endif
2189 		break;
2190 
2191 	default:
2192 		return (ENOIOCTL);
2193 	}
2194 
2195 	switch (args->cmd & 0xffff) {
2196 
2197 	case LINUX_FIOSETOWN:
2198 		args->cmd = FIOSETOWN;
2199 		error = ioctl(td, (struct ioctl_args *)args);
2200 		break;
2201 
2202 	case LINUX_SIOCSPGRP:
2203 		args->cmd = SIOCSPGRP;
2204 		error = ioctl(td, (struct ioctl_args *)args);
2205 		break;
2206 
2207 	case LINUX_FIOGETOWN:
2208 		args->cmd = FIOGETOWN;
2209 		error = ioctl(td, (struct ioctl_args *)args);
2210 		break;
2211 
2212 	case LINUX_SIOCGPGRP:
2213 		args->cmd = SIOCGPGRP;
2214 		error = ioctl(td, (struct ioctl_args *)args);
2215 		break;
2216 
2217 	case LINUX_SIOCATMARK:
2218 		args->cmd = SIOCATMARK;
2219 		error = ioctl(td, (struct ioctl_args *)args);
2220 		break;
2221 
2222 	/* LINUX_SIOCGSTAMP */
2223 
2224 	case LINUX_SIOCGIFCONF:
2225 		error = linux_ifconf(td, (struct ifconf *)args->arg);
2226 		break;
2227 
2228 	case LINUX_SIOCGIFFLAGS:
2229 		args->cmd = SIOCGIFFLAGS;
2230 		error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
2231 		break;
2232 
2233 	case LINUX_SIOCGIFADDR:
2234 		args->cmd = OSIOCGIFADDR;
2235 		error = ioctl(td, (struct ioctl_args *)args);
2236 		break;
2237 
2238 	case LINUX_SIOCSIFADDR:
2239 		/* XXX probably doesn't work, included for completeness */
2240 		args->cmd = SIOCSIFADDR;
2241 		error = ioctl(td, (struct ioctl_args *)args);
2242 		break;
2243 
2244 	case LINUX_SIOCGIFDSTADDR:
2245 		args->cmd = OSIOCGIFDSTADDR;
2246 		error = ioctl(td, (struct ioctl_args *)args);
2247 		break;
2248 
2249 	case LINUX_SIOCGIFBRDADDR:
2250 		args->cmd = OSIOCGIFBRDADDR;
2251 		error = ioctl(td, (struct ioctl_args *)args);
2252 		break;
2253 
2254 	case LINUX_SIOCGIFNETMASK:
2255 		args->cmd = OSIOCGIFNETMASK;
2256 		error = ioctl(td, (struct ioctl_args *)args);
2257 		break;
2258 
2259 	case LINUX_SIOCSIFNETMASK:
2260 		error = ENOIOCTL;
2261 		break;
2262 
2263 	case LINUX_SIOCGIFMTU:
2264 		args->cmd = SIOCGIFMTU;
2265 		error = ioctl(td, (struct ioctl_args *)args);
2266 		break;
2267 
2268 	case LINUX_SIOCSIFMTU:
2269 		args->cmd = SIOCSIFMTU;
2270 		error = ioctl(td, (struct ioctl_args *)args);
2271 		break;
2272 
2273 	case LINUX_SIOCSIFNAME:
2274 		error = ENOIOCTL;
2275 		break;
2276 
2277 	case LINUX_SIOCGIFHWADDR:
2278 		error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
2279 		break;
2280 
2281 	case LINUX_SIOCSIFHWADDR:
2282 		error = ENOIOCTL;
2283 		break;
2284 
2285 	case LINUX_SIOCADDMULTI:
2286 		args->cmd = SIOCADDMULTI;
2287 		error = ioctl(td, (struct ioctl_args *)args);
2288 		break;
2289 
2290 	case LINUX_SIOCDELMULTI:
2291 		args->cmd = SIOCDELMULTI;
2292 		error = ioctl(td, (struct ioctl_args *)args);
2293 		break;
2294 
2295 	/*
2296 	 * XXX This is slightly bogus, but these ioctls are currently
2297 	 * XXX only used by the aironet (if_an) network driver.
2298 	 */
2299 	case LINUX_SIOCDEVPRIVATE:
2300 		args->cmd = SIOCGPRIVATE_0;
2301 		error = ioctl(td, (struct ioctl_args *)args);
2302 		break;
2303 
2304 	case LINUX_SIOCDEVPRIVATE+1:
2305 		args->cmd = SIOCGPRIVATE_1;
2306 		error = ioctl(td, (struct ioctl_args *)args);
2307 		break;
2308 	}
2309 
2310 	if (ifp != NULL)
2311 		/* restore the original interface name */
2312 		copyout(lifname, (void *)args->arg, LINUX_IFNAMSIZ);
2313 
2314 #ifdef DEBUG
2315 	printf("%s(): returning %d\n", __func__, error);
2316 #endif
2317 	return (error);
2318 }
2319 
2320 /*
2321  * Device private ioctl handler
2322  */
2323 static int
2324 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
2325 {
2326 	struct file *fp;
2327 	int error, type;
2328 
2329 	if ((error = fget(td, args->fd, &fp)) != 0)
2330 		return (error);
2331 	type = fp->f_type;
2332 	fdrop(fp, td);
2333 	if (type == DTYPE_SOCKET)
2334 		return (linux_ioctl_socket(td, args));
2335 	return (ENOIOCTL);
2336 }
2337 
2338 /*
2339  * DRM ioctl handler (sys/dev/drm)
2340  */
2341 static int
2342 linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
2343 {
2344 	args->cmd = SETDIR(args->cmd);
2345 	return ioctl(td, (struct ioctl_args *)args);
2346 }
2347 
2348 /*
2349  * Special ioctl handler
2350  */
2351 static int
2352 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
2353 {
2354 	int error;
2355 
2356 	switch (args->cmd) {
2357 	case LINUX_SIOCGIFADDR:
2358 		args->cmd = SIOCGIFADDR;
2359 		error = ioctl(td, (struct ioctl_args *)args);
2360 		break;
2361 	case LINUX_SIOCSIFADDR:
2362 		args->cmd = SIOCSIFADDR;
2363 		error = ioctl(td, (struct ioctl_args *)args);
2364 		break;
2365 	case LINUX_SIOCGIFFLAGS:
2366 		args->cmd = SIOCGIFFLAGS;
2367 		error = ioctl(td, (struct ioctl_args *)args);
2368 		break;
2369 	default:
2370 		error = ENOIOCTL;
2371 	}
2372 
2373 	return (error);
2374 }
2375 
2376 /*
2377  * main ioctl syscall function
2378  */
2379 
2380 int
2381 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
2382 {
2383 	struct file *fp;
2384 	struct handler_element *he;
2385 	int error, cmd;
2386 
2387 #ifdef DEBUG
2388 	if (ldebug(ioctl))
2389 		printf(ARGS(ioctl, "%d, %04lx, *"), args->fd,
2390 		    (unsigned long)args->cmd);
2391 #endif
2392 
2393 	if ((error = fget(td, args->fd, &fp)) != 0)
2394 		return (error);
2395 	if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
2396 		fdrop(fp, td);
2397 		return (EBADF);
2398 	}
2399 
2400 	/* Iterate over the ioctl handlers */
2401 	cmd = args->cmd & 0xffff;
2402 	TAILQ_FOREACH(he, &handlers, list) {
2403 		if (cmd >= he->low && cmd <= he->high) {
2404 			error = (*he->func)(td, args);
2405 			if (error != ENOIOCTL) {
2406 				fdrop(fp, td);
2407 				return (error);
2408 			}
2409 		}
2410 	}
2411 	fdrop(fp, td);
2412 
2413 	linux_msg(td, "ioctl fd=%d, cmd=0x%x ('%c',%d) is not implemented",
2414 	    args->fd, (int)(args->cmd & 0xffff),
2415 	    (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
2416 
2417 	return (EINVAL);
2418 }
2419 
2420 int
2421 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
2422 {
2423 	struct handler_element *he, *cur;
2424 
2425 	if (h == NULL || h->func == NULL)
2426 		return (EINVAL);
2427 
2428 	/*
2429 	 * Reuse the element if the handler is already on the list, otherwise
2430 	 * create a new element.
2431 	 */
2432 	TAILQ_FOREACH(he, &handlers, list) {
2433 		if (he->func == h->func)
2434 			break;
2435 	}
2436 	if (he == NULL) {
2437 		MALLOC(he, struct handler_element *, sizeof(*he),
2438 		    M_LINUX, M_WAITOK);
2439 		he->func = h->func;
2440 	} else
2441 		TAILQ_REMOVE(&handlers, he, list);
2442 
2443 	/* Initialize range information. */
2444 	he->low = h->low;
2445 	he->high = h->high;
2446 	he->span = h->high - h->low + 1;
2447 
2448 	/* Add the element to the list, sorted on span. */
2449 	TAILQ_FOREACH(cur, &handlers, list) {
2450 		if (cur->span > he->span) {
2451 			TAILQ_INSERT_BEFORE(cur, he, list);
2452 			return (0);
2453 		}
2454 	}
2455 	TAILQ_INSERT_TAIL(&handlers, he, list);
2456 
2457 	return (0);
2458 }
2459 
2460 int
2461 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
2462 {
2463 	struct handler_element *he;
2464 
2465 	if (h == NULL || h->func == NULL)
2466 		return (EINVAL);
2467 
2468 	TAILQ_FOREACH(he, &handlers, list) {
2469 		if (he->func == h->func) {
2470 			TAILQ_REMOVE(&handlers, he, list);
2471 			FREE(he, M_LINUX);
2472 			return (0);
2473 		}
2474 	}
2475 
2476 	return (EINVAL);
2477 }
2478