xref: /freebsd/sys/compat/linux/linux_ioctl.c (revision c4f6a2a9e1b1879b618c436ab4f56ff75c73a0f5)
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  * $FreeBSD$
29  */
30 
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/sysproto.h>
34 #include <sys/cdio.h>
35 #include <sys/dvdio.h>
36 #include <sys/consio.h>
37 #include <sys/ctype.h>
38 #include <sys/disklabel.h>
39 #include <sys/fcntl.h>
40 #include <sys/file.h>
41 #include <sys/filedesc.h>
42 #include <sys/filio.h>
43 #include <sys/kbio.h>
44 #include <sys/linker_set.h>
45 #include <sys/malloc.h>
46 #include <sys/proc.h>
47 #include <sys/socket.h>
48 #include <sys/sockio.h>
49 #include <sys/soundcard.h>
50 #include <sys/tty.h>
51 #include <sys/uio.h>
52 #include <net/if.h>
53 #include <net/if_dl.h>
54 #include <net/if_types.h>
55 
56 #include <machine/../linux/linux.h>
57 #include <machine/../linux/linux_proto.h>
58 
59 #include <compat/linux/linux_ioctl.h>
60 #include <compat/linux/linux_mib.h>
61 #include <compat/linux/linux_util.h>
62 
63 static linux_ioctl_function_t linux_ioctl_cdrom;
64 static linux_ioctl_function_t linux_ioctl_console;
65 static linux_ioctl_function_t linux_ioctl_disk;
66 static linux_ioctl_function_t linux_ioctl_socket;
67 static linux_ioctl_function_t linux_ioctl_sound;
68 static linux_ioctl_function_t linux_ioctl_termio;
69 static linux_ioctl_function_t linux_ioctl_private;
70 static linux_ioctl_function_t linux_ioctl_special;
71 
72 static struct linux_ioctl_handler cdrom_handler =
73 { linux_ioctl_cdrom, LINUX_IOCTL_CDROM_MIN, LINUX_IOCTL_CDROM_MAX };
74 static struct linux_ioctl_handler console_handler =
75 { linux_ioctl_console, LINUX_IOCTL_CONSOLE_MIN, LINUX_IOCTL_CONSOLE_MAX };
76 static struct linux_ioctl_handler disk_handler =
77 { linux_ioctl_disk, LINUX_IOCTL_DISK_MIN, LINUX_IOCTL_DISK_MAX };
78 static struct linux_ioctl_handler socket_handler =
79 { linux_ioctl_socket, LINUX_IOCTL_SOCKET_MIN, LINUX_IOCTL_SOCKET_MAX };
80 static struct linux_ioctl_handler sound_handler =
81 { linux_ioctl_sound, LINUX_IOCTL_SOUND_MIN, LINUX_IOCTL_SOUND_MAX };
82 static struct linux_ioctl_handler termio_handler =
83 { linux_ioctl_termio, LINUX_IOCTL_TERMIO_MIN, LINUX_IOCTL_TERMIO_MAX };
84 static struct linux_ioctl_handler private_handler =
85 { linux_ioctl_private, LINUX_IOCTL_PRIVATE_MIN, LINUX_IOCTL_PRIVATE_MAX };
86 
87 DATA_SET(linux_ioctl_handler_set, cdrom_handler);
88 DATA_SET(linux_ioctl_handler_set, console_handler);
89 DATA_SET(linux_ioctl_handler_set, disk_handler);
90 DATA_SET(linux_ioctl_handler_set, socket_handler);
91 DATA_SET(linux_ioctl_handler_set, sound_handler);
92 DATA_SET(linux_ioctl_handler_set, termio_handler);
93 DATA_SET(linux_ioctl_handler_set, private_handler);
94 
95 struct handler_element
96 {
97 	TAILQ_ENTRY(handler_element) list;
98 	int	(*func)(struct thread *, struct linux_ioctl_args *);
99 	int	low, high, span;
100 };
101 
102 static TAILQ_HEAD(, handler_element) handlers =
103 	TAILQ_HEAD_INITIALIZER(handlers);
104 
105 static int
106 linux_ioctl_disk(struct thread *td, struct linux_ioctl_args *args)
107 {
108 	struct file *fp;
109 	int error;
110 	struct disklabel dl;
111 
112 	if ((error = fget(td, args->fd, &fp)) != 0)
113 		return (error);
114 	switch (args->cmd & 0xffff) {
115 	case LINUX_BLKGETSIZE:
116 		error = fo_ioctl(fp, DIOCGDINFO, (caddr_t)&dl, td->td_ucred,
117 		    td);
118 		fdrop(fp, td);
119 		if (error)
120 			return (error);
121 		return (copyout(&(dl.d_secperunit), (caddr_t)args->arg,
122 		     sizeof(dl.d_secperunit)));
123 	}
124 	fdrop(fp, td);
125 	return (ENOIOCTL);
126 }
127 
128 /*
129  * termio related ioctls
130  */
131 
132 struct linux_termio {
133 	unsigned short c_iflag;
134 	unsigned short c_oflag;
135 	unsigned short c_cflag;
136 	unsigned short c_lflag;
137 	unsigned char c_line;
138 	unsigned char c_cc[LINUX_NCC];
139 };
140 
141 struct linux_termios {
142 	unsigned int c_iflag;
143 	unsigned int c_oflag;
144 	unsigned int c_cflag;
145 	unsigned int c_lflag;
146 #ifdef __alpha__
147 	unsigned char c_cc[LINUX_NCCS];
148 	unsigned char c_line;
149 	unsigned int  c_ispeed;
150 	unsigned int  c_ospeed;
151 #else
152 	unsigned char c_line;
153 	unsigned char c_cc[LINUX_NCCS];
154 #endif
155 };
156 
157 struct linux_winsize {
158 	unsigned short ws_row, ws_col;
159 	unsigned short ws_xpixel, ws_ypixel;
160 };
161 
162 static struct speedtab sptab[] = {
163 	{ B0, LINUX_B0 }, { B50, LINUX_B50 },
164 	{ B75, LINUX_B75 }, { B110, LINUX_B110 },
165 	{ B134, LINUX_B134 }, { B150, LINUX_B150 },
166 	{ B200, LINUX_B200 }, { B300, LINUX_B300 },
167 	{ B600, LINUX_B600 }, { B1200, LINUX_B1200 },
168 	{ B1800, LINUX_B1800 }, { B2400, LINUX_B2400 },
169 	{ B4800, LINUX_B4800 }, { B9600, LINUX_B9600 },
170 	{ B19200, LINUX_B19200 }, { B38400, LINUX_B38400 },
171 	{ B57600, LINUX_B57600 }, { B115200, LINUX_B115200 },
172 	{-1, -1 }
173 };
174 
175 struct linux_serial_struct {
176 	int	type;
177 	int	line;
178 	int	port;
179 	int	irq;
180 	int	flags;
181 	int	xmit_fifo_size;
182 	int	custom_divisor;
183 	int	baud_base;
184 	unsigned short close_delay;
185 	char	reserved_char[2];
186 	int	hub6;
187 	unsigned short closing_wait;
188 	unsigned short closing_wait2;
189 	int	reserved[4];
190 };
191 
192 static int
193 linux_to_bsd_speed(int code, struct speedtab *table)
194 {
195 	for ( ; table->sp_code != -1; table++)
196 		if (table->sp_code == code)
197 			return (table->sp_speed);
198 	return -1;
199 }
200 
201 static int
202 bsd_to_linux_speed(int speed, struct speedtab *table)
203 {
204 	for ( ; table->sp_speed != -1; table++)
205 		if (table->sp_speed == speed)
206 			return (table->sp_code);
207 	return -1;
208 }
209 
210 static void
211 bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
212 {
213 	int i;
214 
215 #ifdef DEBUG
216 	if (ldebug(ioctl)) {
217 		printf("LINUX: BSD termios structure (input):\n");
218 		printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
219 		    bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
220 		    bios->c_ispeed, bios->c_ospeed);
221 		printf("c_cc ");
222 		for (i=0; i<NCCS; i++)
223 			printf("%02x ", bios->c_cc[i]);
224 		printf("\n");
225 	}
226 #endif
227 
228 	lios->c_iflag = 0;
229 	if (bios->c_iflag & IGNBRK)
230 		lios->c_iflag |= LINUX_IGNBRK;
231 	if (bios->c_iflag & BRKINT)
232 		lios->c_iflag |= LINUX_BRKINT;
233 	if (bios->c_iflag & IGNPAR)
234 		lios->c_iflag |= LINUX_IGNPAR;
235 	if (bios->c_iflag & PARMRK)
236 		lios->c_iflag |= LINUX_PARMRK;
237 	if (bios->c_iflag & INPCK)
238 		lios->c_iflag |= LINUX_INPCK;
239 	if (bios->c_iflag & ISTRIP)
240 		lios->c_iflag |= LINUX_ISTRIP;
241 	if (bios->c_iflag & INLCR)
242 		lios->c_iflag |= LINUX_INLCR;
243 	if (bios->c_iflag & IGNCR)
244 		lios->c_iflag |= LINUX_IGNCR;
245 	if (bios->c_iflag & ICRNL)
246 		lios->c_iflag |= LINUX_ICRNL;
247 	if (bios->c_iflag & IXON)
248 		lios->c_iflag |= LINUX_IXON;
249 	if (bios->c_iflag & IXANY)
250 		lios->c_iflag |= LINUX_IXANY;
251 	if (bios->c_iflag & IXOFF)
252 		lios->c_iflag |= LINUX_IXOFF;
253 	if (bios->c_iflag & IMAXBEL)
254 		lios->c_iflag |= LINUX_IMAXBEL;
255 
256 	lios->c_oflag = 0;
257 	if (bios->c_oflag & OPOST)
258 		lios->c_oflag |= LINUX_OPOST;
259 	if (bios->c_oflag & ONLCR)
260 		lios->c_oflag |= LINUX_ONLCR;
261 	if (bios->c_oflag & OXTABS)
262 		lios->c_oflag |= LINUX_XTABS;
263 
264 	lios->c_cflag = bsd_to_linux_speed(bios->c_ispeed, sptab);
265 	lios->c_cflag |= (bios->c_cflag & CSIZE) >> 4;
266 	if (bios->c_cflag & CSTOPB)
267 		lios->c_cflag |= LINUX_CSTOPB;
268 	if (bios->c_cflag & CREAD)
269 		lios->c_cflag |= LINUX_CREAD;
270 	if (bios->c_cflag & PARENB)
271 		lios->c_cflag |= LINUX_PARENB;
272 	if (bios->c_cflag & PARODD)
273 		lios->c_cflag |= LINUX_PARODD;
274 	if (bios->c_cflag & HUPCL)
275 		lios->c_cflag |= LINUX_HUPCL;
276 	if (bios->c_cflag & CLOCAL)
277 		lios->c_cflag |= LINUX_CLOCAL;
278 	if (bios->c_cflag & CRTSCTS)
279 		lios->c_cflag |= LINUX_CRTSCTS;
280 
281 	lios->c_lflag = 0;
282 	if (bios->c_lflag & ISIG)
283 		lios->c_lflag |= LINUX_ISIG;
284 	if (bios->c_lflag & ICANON)
285 		lios->c_lflag |= LINUX_ICANON;
286 	if (bios->c_lflag & ECHO)
287 		lios->c_lflag |= LINUX_ECHO;
288 	if (bios->c_lflag & ECHOE)
289 		lios->c_lflag |= LINUX_ECHOE;
290 	if (bios->c_lflag & ECHOK)
291 		lios->c_lflag |= LINUX_ECHOK;
292 	if (bios->c_lflag & ECHONL)
293 		lios->c_lflag |= LINUX_ECHONL;
294 	if (bios->c_lflag & NOFLSH)
295 		lios->c_lflag |= LINUX_NOFLSH;
296 	if (bios->c_lflag & TOSTOP)
297 		lios->c_lflag |= LINUX_TOSTOP;
298 	if (bios->c_lflag & ECHOCTL)
299 		lios->c_lflag |= LINUX_ECHOCTL;
300 	if (bios->c_lflag & ECHOPRT)
301 		lios->c_lflag |= LINUX_ECHOPRT;
302 	if (bios->c_lflag & ECHOKE)
303 		lios->c_lflag |= LINUX_ECHOKE;
304 	if (bios->c_lflag & FLUSHO)
305 		lios->c_lflag |= LINUX_FLUSHO;
306 	if (bios->c_lflag & PENDIN)
307 		lios->c_lflag |= LINUX_PENDIN;
308 	if (bios->c_lflag & IEXTEN)
309 		lios->c_lflag |= LINUX_IEXTEN;
310 
311 	for (i=0; i<LINUX_NCCS; i++)
312 		lios->c_cc[i] = LINUX_POSIX_VDISABLE;
313 	lios->c_cc[LINUX_VINTR] = bios->c_cc[VINTR];
314 	lios->c_cc[LINUX_VQUIT] = bios->c_cc[VQUIT];
315 	lios->c_cc[LINUX_VERASE] = bios->c_cc[VERASE];
316 	lios->c_cc[LINUX_VKILL] = bios->c_cc[VKILL];
317 	lios->c_cc[LINUX_VEOF] = bios->c_cc[VEOF];
318 	lios->c_cc[LINUX_VEOL] = bios->c_cc[VEOL];
319 	lios->c_cc[LINUX_VMIN] = bios->c_cc[VMIN];
320 	lios->c_cc[LINUX_VTIME] = bios->c_cc[VTIME];
321 	lios->c_cc[LINUX_VEOL2] = bios->c_cc[VEOL2];
322 	lios->c_cc[LINUX_VSUSP] = bios->c_cc[VSUSP];
323 	lios->c_cc[LINUX_VSTART] = bios->c_cc[VSTART];
324 	lios->c_cc[LINUX_VSTOP] = bios->c_cc[VSTOP];
325 	lios->c_cc[LINUX_VREPRINT] = bios->c_cc[VREPRINT];
326 	lios->c_cc[LINUX_VDISCARD] = bios->c_cc[VDISCARD];
327 	lios->c_cc[LINUX_VWERASE] = bios->c_cc[VWERASE];
328 	lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
329 
330 	for (i=0; i<LINUX_NCCS; i++) {
331 		if (lios->c_cc[i] == _POSIX_VDISABLE)
332 			lios->c_cc[i] = LINUX_POSIX_VDISABLE;
333 	}
334 	lios->c_line = 0;
335 
336 #ifdef DEBUG
337 	if (ldebug(ioctl)) {
338 		printf("LINUX: LINUX termios structure (output):\n");
339 		printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
340 		    lios->c_iflag, lios->c_oflag, lios->c_cflag,
341 		    lios->c_lflag, (int)lios->c_line);
342 		printf("c_cc ");
343 		for (i=0; i<LINUX_NCCS; i++)
344 			printf("%02x ", lios->c_cc[i]);
345 		printf("\n");
346 	}
347 #endif
348 }
349 
350 static void
351 linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
352 {
353 	int i;
354 
355 #ifdef DEBUG
356 	if (ldebug(ioctl)) {
357 		printf("LINUX: LINUX termios structure (input):\n");
358 		printf("i=%08x o=%08x c=%08x l=%08x line=%d\n",
359 		    lios->c_iflag, lios->c_oflag, lios->c_cflag,
360 		    lios->c_lflag, (int)lios->c_line);
361 		printf("c_cc ");
362 		for (i=0; i<LINUX_NCCS; i++)
363 			printf("%02x ", lios->c_cc[i]);
364 		printf("\n");
365 	}
366 #endif
367 
368 	bios->c_iflag = 0;
369 	if (lios->c_iflag & LINUX_IGNBRK)
370 		bios->c_iflag |= IGNBRK;
371 	if (lios->c_iflag & LINUX_BRKINT)
372 		bios->c_iflag |= BRKINT;
373 	if (lios->c_iflag & LINUX_IGNPAR)
374 		bios->c_iflag |= IGNPAR;
375 	if (lios->c_iflag & LINUX_PARMRK)
376 		bios->c_iflag |= PARMRK;
377 	if (lios->c_iflag & LINUX_INPCK)
378 		bios->c_iflag |= INPCK;
379 	if (lios->c_iflag & LINUX_ISTRIP)
380 		bios->c_iflag |= ISTRIP;
381 	if (lios->c_iflag & LINUX_INLCR)
382 		bios->c_iflag |= INLCR;
383 	if (lios->c_iflag & LINUX_IGNCR)
384 		bios->c_iflag |= IGNCR;
385 	if (lios->c_iflag & LINUX_ICRNL)
386 		bios->c_iflag |= ICRNL;
387 	if (lios->c_iflag & LINUX_IXON)
388 		bios->c_iflag |= IXON;
389 	if (lios->c_iflag & LINUX_IXANY)
390 		bios->c_iflag |= IXANY;
391 	if (lios->c_iflag & LINUX_IXOFF)
392 		bios->c_iflag |= IXOFF;
393 	if (lios->c_iflag & LINUX_IMAXBEL)
394 		bios->c_iflag |= IMAXBEL;
395 
396 	bios->c_oflag = 0;
397 	if (lios->c_oflag & LINUX_OPOST)
398 		bios->c_oflag |= OPOST;
399 	if (lios->c_oflag & LINUX_ONLCR)
400 		bios->c_oflag |= ONLCR;
401 	if (lios->c_oflag & LINUX_XTABS)
402 		bios->c_oflag |= OXTABS;
403 
404 	bios->c_cflag = (lios->c_cflag & LINUX_CSIZE) << 4;
405 	if (lios->c_cflag & LINUX_CSTOPB)
406 		bios->c_cflag |= CSTOPB;
407 	if (lios->c_cflag & LINUX_CREAD)
408 		bios->c_cflag |= CREAD;
409 	if (lios->c_cflag & LINUX_PARENB)
410 		bios->c_cflag |= PARENB;
411 	if (lios->c_cflag & LINUX_PARODD)
412 		bios->c_cflag |= PARODD;
413 	if (lios->c_cflag & LINUX_HUPCL)
414 		bios->c_cflag |= HUPCL;
415 	if (lios->c_cflag & LINUX_CLOCAL)
416 		bios->c_cflag |= CLOCAL;
417 	if (lios->c_cflag & LINUX_CRTSCTS)
418 		bios->c_cflag |= CRTSCTS;
419 
420 	bios->c_lflag = 0;
421 	if (lios->c_lflag & LINUX_ISIG)
422 		bios->c_lflag |= ISIG;
423 	if (lios->c_lflag & LINUX_ICANON)
424 		bios->c_lflag |= ICANON;
425 	if (lios->c_lflag & LINUX_ECHO)
426 		bios->c_lflag |= ECHO;
427 	if (lios->c_lflag & LINUX_ECHOE)
428 		bios->c_lflag |= ECHOE;
429 	if (lios->c_lflag & LINUX_ECHOK)
430 		bios->c_lflag |= ECHOK;
431 	if (lios->c_lflag & LINUX_ECHONL)
432 		bios->c_lflag |= ECHONL;
433 	if (lios->c_lflag & LINUX_NOFLSH)
434 		bios->c_lflag |= NOFLSH;
435 	if (lios->c_lflag & LINUX_TOSTOP)
436 		bios->c_lflag |= TOSTOP;
437 	if (lios->c_lflag & LINUX_ECHOCTL)
438 		bios->c_lflag |= ECHOCTL;
439 	if (lios->c_lflag & LINUX_ECHOPRT)
440 		bios->c_lflag |= ECHOPRT;
441 	if (lios->c_lflag & LINUX_ECHOKE)
442 		bios->c_lflag |= ECHOKE;
443 	if (lios->c_lflag & LINUX_FLUSHO)
444 		bios->c_lflag |= FLUSHO;
445 	if (lios->c_lflag & LINUX_PENDIN)
446 		bios->c_lflag |= PENDIN;
447 	if (lios->c_lflag & LINUX_IEXTEN)
448 		bios->c_lflag |= IEXTEN;
449 
450 	for (i=0; i<NCCS; i++)
451 		bios->c_cc[i] = _POSIX_VDISABLE;
452 	bios->c_cc[VINTR] = lios->c_cc[LINUX_VINTR];
453 	bios->c_cc[VQUIT] = lios->c_cc[LINUX_VQUIT];
454 	bios->c_cc[VERASE] = lios->c_cc[LINUX_VERASE];
455 	bios->c_cc[VKILL] = lios->c_cc[LINUX_VKILL];
456 	bios->c_cc[VEOF] = lios->c_cc[LINUX_VEOF];
457 	bios->c_cc[VEOL] = lios->c_cc[LINUX_VEOL];
458 	bios->c_cc[VMIN] = lios->c_cc[LINUX_VMIN];
459 	bios->c_cc[VTIME] = lios->c_cc[LINUX_VTIME];
460 	bios->c_cc[VEOL2] = lios->c_cc[LINUX_VEOL2];
461 	bios->c_cc[VSUSP] = lios->c_cc[LINUX_VSUSP];
462 	bios->c_cc[VSTART] = lios->c_cc[LINUX_VSTART];
463 	bios->c_cc[VSTOP] = lios->c_cc[LINUX_VSTOP];
464 	bios->c_cc[VREPRINT] = lios->c_cc[LINUX_VREPRINT];
465 	bios->c_cc[VDISCARD] = lios->c_cc[LINUX_VDISCARD];
466 	bios->c_cc[VWERASE] = lios->c_cc[LINUX_VWERASE];
467 	bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
468 
469 	for (i=0; i<NCCS; i++) {
470 		if (bios->c_cc[i] == LINUX_POSIX_VDISABLE)
471 			bios->c_cc[i] = _POSIX_VDISABLE;
472 	}
473 
474 	bios->c_ispeed = bios->c_ospeed =
475 	    linux_to_bsd_speed(lios->c_cflag & LINUX_CBAUD, sptab);
476 
477 #ifdef DEBUG
478 	if (ldebug(ioctl)) {
479 		printf("LINUX: BSD termios structure (output):\n");
480 		printf("i=%08x o=%08x c=%08x l=%08x ispeed=%d ospeed=%d\n",
481 		    bios->c_iflag, bios->c_oflag, bios->c_cflag, bios->c_lflag,
482 		    bios->c_ispeed, bios->c_ospeed);
483 		printf("c_cc ");
484 		for (i=0; i<NCCS; i++)
485 			printf("%02x ", bios->c_cc[i]);
486 		printf("\n");
487 	}
488 #endif
489 }
490 
491 static void
492 bsd_to_linux_termio(struct termios *bios, struct linux_termio *lio)
493 {
494 	struct linux_termios lios;
495 
496 	bsd_to_linux_termios(bios, &lios);
497 	lio->c_iflag = lios.c_iflag;
498 	lio->c_oflag = lios.c_oflag;
499 	lio->c_cflag = lios.c_cflag;
500 	lio->c_lflag = lios.c_lflag;
501 	lio->c_line  = lios.c_line;
502 #ifdef __alpha__
503 	lio->c_cc[LINUX__VINTR] = lios.c_cc[LINUX_VINTR];
504 	lio->c_cc[LINUX__VQUIT] = lios.c_cc[LINUX_VQUIT];
505 	lio->c_cc[LINUX__VERASE] = lios.c_cc[LINUX_VERASE];
506 	lio->c_cc[LINUX__VKILL] = lios.c_cc[LINUX_VKILL];
507 	lio->c_cc[LINUX__VEOF] =
508 	    lios.c_cc[(lios.c_lflag & ICANON) ? LINUX_VEOF : LINUX_VMIN];
509 	lio->c_cc[LINUX__VEOL] =
510 	    lios.c_cc[(lios.c_lflag & ICANON) ? LINUX_VEOL : LINUX_VTIME];
511 	lio->c_cc[LINUX__VEOL2] = lios.c_cc[LINUX_VEOL2];
512 	lio->c_cc[LINUX__VSWTC] = lios.c_cc[LINUX_VSWTC];
513 #else
514 	memcpy(lio->c_cc, lios.c_cc, LINUX_NCC);
515 #endif
516 }
517 
518 static void
519 linux_to_bsd_termio(struct linux_termio *lio, struct termios *bios)
520 {
521 	struct linux_termios lios;
522 	int i;
523 
524 	lios.c_iflag = lio->c_iflag;
525 	lios.c_oflag = lio->c_oflag;
526 	lios.c_cflag = lio->c_cflag;
527 	lios.c_lflag = lio->c_lflag;
528 #ifdef __alpha__
529 	for (i=0; i<LINUX_NCCS; i++)
530 		lios.c_cc[i] = LINUX_POSIX_VDISABLE;
531 	lios.c_cc[LINUX_VINTR] = lio->c_cc[LINUX__VINTR];
532 	lios.c_cc[LINUX_VQUIT] = lio->c_cc[LINUX__VQUIT];
533 	lios.c_cc[LINUX_VERASE] = lio->c_cc[LINUX__VERASE];
534 	lios.c_cc[LINUX_VKILL] = lio->c_cc[LINUX__VKILL];
535 	lios.c_cc[LINUX_VEOL2] = lio->c_cc[LINUX__VEOL2];
536 	lios.c_cc[LINUX_VSWTC] = lio->c_cc[LINUX__VSWTC];
537 	lios.c_cc[(lio->c_lflag & ICANON) ? LINUX_VEOF : LINUX_VMIN] =
538 	    lio->c_cc[LINUX__VEOF];
539 	lios.c_cc[(lio->c_lflag & ICANON) ? LINUX_VEOL : LINUX_VTIME] =
540 	    lio->c_cc[LINUX__VEOL];
541 #else
542 	for (i=LINUX_NCC; i<LINUX_NCCS; i++)
543 		lios.c_cc[i] = LINUX_POSIX_VDISABLE;
544 	memcpy(lios.c_cc, lio->c_cc, LINUX_NCC);
545 #endif
546 	linux_to_bsd_termios(&lios, bios);
547 }
548 
549 static int
550 linux_ioctl_termio(struct thread *td, struct linux_ioctl_args *args)
551 {
552 	struct termios bios;
553 	struct linux_termios lios;
554 	struct linux_termio lio;
555 	struct file *fp;
556 	int error;
557 
558 	if ((error = fget(td, args->fd, &fp)) != 0)
559 		return (error);
560 
561 	switch (args->cmd & 0xffff) {
562 
563 	case LINUX_TCGETS:
564 		error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
565 		    td);
566 		if (error)
567 			break;
568 		bsd_to_linux_termios(&bios, &lios);
569 		error = copyout(&lios, (caddr_t)args->arg, sizeof(lios));
570 		break;
571 
572 	case LINUX_TCSETS:
573 		error = copyin((caddr_t)args->arg, &lios, sizeof(lios));
574 		if (error)
575 			break;
576 		linux_to_bsd_termios(&lios, &bios);
577 		error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
578 		    td));
579 		break;
580 
581 	case LINUX_TCSETSW:
582 		error = copyin((caddr_t)args->arg, &lios, sizeof(lios));
583 		if (error)
584 			break;
585 		linux_to_bsd_termios(&lios, &bios);
586 		error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
587 		    td));
588 		break;
589 
590 	case LINUX_TCSETSF:
591 		error = copyin((caddr_t)args->arg, &lios, sizeof(lios));
592 		if (error)
593 			break;
594 		linux_to_bsd_termios(&lios, &bios);
595 		error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
596 		    td));
597 		break;
598 
599 	case LINUX_TCGETA:
600 		error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios, td->td_ucred,
601 		    td);
602 		if (error)
603 			break;
604 		bsd_to_linux_termio(&bios, &lio);
605 		error = (copyout(&lio, (caddr_t)args->arg, sizeof(lio)));
606 		break;
607 
608 	case LINUX_TCSETA:
609 		error = copyin((caddr_t)args->arg, &lio, sizeof(lio));
610 		if (error)
611 			break;
612 		linux_to_bsd_termio(&lio, &bios);
613 		error = (fo_ioctl(fp, TIOCSETA, (caddr_t)&bios, td->td_ucred,
614 		    td));
615 		break;
616 
617 	case LINUX_TCSETAW:
618 		error = copyin((caddr_t)args->arg, &lio, sizeof(lio));
619 		if (error)
620 			break;
621 		linux_to_bsd_termio(&lio, &bios);
622 		error = (fo_ioctl(fp, TIOCSETAW, (caddr_t)&bios, td->td_ucred,
623 		    td));
624 		break;
625 
626 	case LINUX_TCSETAF:
627 		error = copyin((caddr_t)args->arg, &lio, sizeof(lio));
628 		if (error)
629 			break;
630 		linux_to_bsd_termio(&lio, &bios);
631 		error = (fo_ioctl(fp, TIOCSETAF, (caddr_t)&bios, td->td_ucred,
632 		    td));
633 		break;
634 
635 	/* LINUX_TCSBRK */
636 
637 	case LINUX_TCXONC: {
638 		switch (args->arg) {
639 		case LINUX_TCOOFF:
640 			args->cmd = TIOCSTOP;
641 			break;
642 		case LINUX_TCOON:
643 			args->cmd = TIOCSTART;
644 			break;
645 		case LINUX_TCIOFF:
646 		case LINUX_TCION: {
647 			int c;
648 			struct write_args wr;
649 			error = fo_ioctl(fp, TIOCGETA, (caddr_t)&bios,
650 			    td->td_ucred, td);
651 			if (error)
652 				break;
653 			fdrop(fp, td);
654 			c = (args->arg == LINUX_TCIOFF) ? VSTOP : VSTART;
655 			c = bios.c_cc[c];
656 			if (c != _POSIX_VDISABLE) {
657 				wr.fd = args->fd;
658 				wr.buf = &c;
659 				wr.nbyte = sizeof(c);
660 				return (write(td, &wr));
661 			} else
662 				return (0);
663 		}
664 		default:
665 			fdrop(fp, td);
666 			return (EINVAL);
667 		}
668 		args->arg = 0;
669 		error = (ioctl(td, (struct ioctl_args *)args));
670 		break;
671 	}
672 
673 	case LINUX_TCFLSH: {
674 		args->cmd = TIOCFLUSH;
675 		switch (args->arg) {
676 		case LINUX_TCIFLUSH:
677 			args->arg = FREAD;
678 			break;
679 		case LINUX_TCOFLUSH:
680 			args->arg = FWRITE;
681 			break;
682 		case LINUX_TCIOFLUSH:
683 			args->arg = FREAD | FWRITE;
684 			break;
685 		default:
686 			fdrop(fp, td);
687 			return (EINVAL);
688 		}
689 		error = (ioctl(td, (struct ioctl_args *)args));
690 		break;
691 	}
692 
693 	case LINUX_TIOCEXCL:
694 		args->cmd = TIOCEXCL;
695 		error = (ioctl(td, (struct ioctl_args *)args));
696 		break;
697 
698 	case LINUX_TIOCNXCL:
699 		args->cmd = TIOCNXCL;
700 		error = (ioctl(td, (struct ioctl_args *)args));
701 		break;
702 
703 	/* LINUX_TIOCSCTTY */
704 
705 	case LINUX_TIOCGPGRP:
706 		args->cmd = TIOCGPGRP;
707 		error = (ioctl(td, (struct ioctl_args *)args));
708 		break;
709 
710 	case LINUX_TIOCSPGRP:
711 		args->cmd = TIOCSPGRP;
712 		error = (ioctl(td, (struct ioctl_args *)args));
713 		break;
714 
715 	/* LINUX_TIOCOUTQ */
716 	/* LINUX_TIOCSTI */
717 
718 	case LINUX_TIOCGWINSZ:
719 		args->cmd = TIOCGWINSZ;
720 		error = (ioctl(td, (struct ioctl_args *)args));
721 		break;
722 
723 	case LINUX_TIOCSWINSZ:
724 		args->cmd = TIOCSWINSZ;
725 		error = (ioctl(td, (struct ioctl_args *)args));
726 		break;
727 
728 	case LINUX_TIOCMGET:
729 		args->cmd = TIOCMGET;
730 		error = (ioctl(td, (struct ioctl_args *)args));
731 		break;
732 
733 	case LINUX_TIOCMBIS:
734 		args->cmd = TIOCMBIS;
735 		error = (ioctl(td, (struct ioctl_args *)args));
736 		break;
737 
738 	case LINUX_TIOCMBIC:
739 		args->cmd = TIOCMBIC;
740 		error = (ioctl(td, (struct ioctl_args *)args));
741 		break;
742 
743 	case LINUX_TIOCMSET:
744 		args->cmd = TIOCMSET;
745 		error = (ioctl(td, (struct ioctl_args *)args));
746 		break;
747 
748 	/* TIOCGSOFTCAR */
749 	/* TIOCSSOFTCAR */
750 
751 	case LINUX_FIONREAD: /* LINUX_TIOCINQ */
752 		args->cmd = FIONREAD;
753 		error = (ioctl(td, (struct ioctl_args *)args));
754 		break;
755 
756 	/* LINUX_TIOCLINUX */
757 
758 	case LINUX_TIOCCONS:
759 		args->cmd = TIOCCONS;
760 		error = (ioctl(td, (struct ioctl_args *)args));
761 		break;
762 
763 	case LINUX_TIOCGSERIAL: {
764 		struct linux_serial_struct lss;
765 		lss.type = LINUX_PORT_16550A;
766 		lss.flags = 0;
767 		lss.close_delay = 0;
768 		error = copyout(&lss, (caddr_t)args->arg, sizeof(lss));
769 		break;
770 	}
771 
772 	case LINUX_TIOCSSERIAL: {
773 		struct linux_serial_struct lss;
774 		error = copyin((caddr_t)args->arg, &lss, sizeof(lss));
775 		if (error)
776 			break;
777 		/* XXX - It really helps to have an implementation that
778 		 * does nothing. NOT!
779 		 */
780 		error = 0;
781 		break;
782 	}
783 
784 	/* LINUX_TIOCPKT */
785 
786 	case LINUX_FIONBIO:
787 		args->cmd = FIONBIO;
788 		error = (ioctl(td, (struct ioctl_args *)args));
789 		break;
790 
791 	case LINUX_TIOCNOTTY:
792 		args->cmd = TIOCNOTTY;
793 		error = (ioctl(td, (struct ioctl_args *)args));
794 		break;
795 
796 	case LINUX_TIOCSETD: {
797 		int line;
798 		switch (args->arg) {
799 		case LINUX_N_TTY:
800 			line = TTYDISC;
801 			break;
802 		case LINUX_N_SLIP:
803 			line = SLIPDISC;
804 			break;
805 		case LINUX_N_PPP:
806 			line = PPPDISC;
807 			break;
808 		default:
809 			fdrop(fp, td);
810 			return (EINVAL);
811 		}
812 		error = (fo_ioctl(fp, TIOCSETD, (caddr_t)&line, td->td_ucred,
813 		    td));
814 		break;
815 	}
816 
817 	case LINUX_TIOCGETD: {
818 		int linux_line;
819 		int bsd_line = TTYDISC;
820 		error = fo_ioctl(fp, TIOCGETD, (caddr_t)&bsd_line,
821 		    td->td_ucred, td);
822 		if (error)
823 			return (error);
824 		switch (bsd_line) {
825 		case TTYDISC:
826 			linux_line = LINUX_N_TTY;
827 			break;
828 		case SLIPDISC:
829 			linux_line = LINUX_N_SLIP;
830 			break;
831 		case PPPDISC:
832 			linux_line = LINUX_N_PPP;
833 			break;
834 		default:
835 			fdrop(fp, td);
836 			return (EINVAL);
837 		}
838 		error = (copyout(&linux_line, (caddr_t)args->arg, sizeof(int)));
839 		break;
840 	}
841 
842 	/* LINUX_TCSBRKP */
843 	/* LINUX_TIOCTTYGSTRUCT */
844 
845 	case LINUX_FIONCLEX:
846 		args->cmd = FIONCLEX;
847 		error = (ioctl(td, (struct ioctl_args *)args));
848 		break;
849 
850 	case LINUX_FIOCLEX:
851 		args->cmd = FIOCLEX;
852 		error = (ioctl(td, (struct ioctl_args *)args));
853 		break;
854 
855 	case LINUX_FIOASYNC:
856 		args->cmd = FIOASYNC;
857 		error = (ioctl(td, (struct ioctl_args *)args));
858 		break;
859 
860 	/* LINUX_TIOCSERCONFIG */
861 	/* LINUX_TIOCSERGWILD */
862 	/* LINUX_TIOCSERSWILD */
863 	/* LINUX_TIOCGLCKTRMIOS */
864 	/* LINUX_TIOCSLCKTRMIOS */
865 
866 	default:
867 		error = ENOIOCTL;
868 		break;
869 	}
870 
871 	fdrop(fp, td);
872 	return (error);
873 }
874 
875 /*
876  * CDROM related ioctls
877  */
878 
879 struct linux_cdrom_msf
880 {
881 	u_char	cdmsf_min0;
882 	u_char	cdmsf_sec0;
883 	u_char	cdmsf_frame0;
884 	u_char	cdmsf_min1;
885 	u_char	cdmsf_sec1;
886 	u_char	cdmsf_frame1;
887 };
888 
889 struct linux_cdrom_tochdr
890 {
891 	u_char	cdth_trk0;
892 	u_char	cdth_trk1;
893 };
894 
895 union linux_cdrom_addr
896 {
897 	struct {
898 		u_char	minute;
899 		u_char	second;
900 		u_char	frame;
901 	} msf;
902 	int	lba;
903 };
904 
905 struct linux_cdrom_tocentry
906 {
907 	u_char	cdte_track;
908 	u_char	cdte_adr:4;
909 	u_char	cdte_ctrl:4;
910 	u_char	cdte_format;
911 	union linux_cdrom_addr cdte_addr;
912 	u_char	cdte_datamode;
913 };
914 
915 struct linux_cdrom_subchnl
916 {
917 	u_char	cdsc_format;
918 	u_char	cdsc_audiostatus;
919 	u_char	cdsc_adr:4;
920 	u_char	cdsc_ctrl:4;
921 	u_char	cdsc_trk;
922 	u_char	cdsc_ind;
923 	union linux_cdrom_addr cdsc_absaddr;
924 	union linux_cdrom_addr cdsc_reladdr;
925 };
926 
927 struct l_dvd_layer {
928 	u_char		book_version:4;
929 	u_char		book_type:4;
930 	u_char		min_rate:4;
931 	u_char		disc_size:4;
932 	u_char		layer_type:4;
933 	u_char		track_path:1;
934 	u_char		nlayers:2;
935 	u_char		track_density:4;
936 	u_char		linear_density:4;
937 	u_char		bca:1;
938 	u_int32_t	start_sector;
939 	u_int32_t	end_sector;
940 	u_int32_t	end_sector_l0;
941 };
942 
943 struct l_dvd_physical {
944 	u_char		type;
945 	u_char		layer_num;
946 	struct l_dvd_layer layer[4];
947 };
948 
949 struct l_dvd_copyright {
950 	u_char		type;
951 	u_char		layer_num;
952 	u_char		cpst;
953 	u_char		rmi;
954 };
955 
956 struct l_dvd_disckey {
957 	u_char		type;
958 	l_uint		agid:2;
959 	u_char		value[2048];
960 };
961 
962 struct l_dvd_bca {
963 	u_char		type;
964 	l_int		len;
965 	u_char		value[188];
966 };
967 
968 struct l_dvd_manufact {
969 	u_char		type;
970 	u_char		layer_num;
971 	l_int		len;
972 	u_char		value[2048];
973 };
974 
975 typedef union {
976 	u_char			type;
977 	struct l_dvd_physical	physical;
978 	struct l_dvd_copyright	copyright;
979 	struct l_dvd_disckey	disckey;
980 	struct l_dvd_bca	bca;
981 	struct l_dvd_manufact	manufact;
982 } l_dvd_struct;
983 
984 typedef u_char l_dvd_key[5];
985 typedef u_char l_dvd_challenge[10];
986 
987 struct l_dvd_lu_send_agid {
988 	u_char		type;
989 	l_uint		agid:2;
990 };
991 
992 struct l_dvd_host_send_challenge {
993 	u_char		type;
994 	l_uint		agid:2;
995 	l_dvd_challenge	chal;
996 };
997 
998 struct l_dvd_send_key {
999 	u_char		type;
1000 	l_uint		agid:2;
1001 	l_dvd_key	key;
1002 };
1003 
1004 struct l_dvd_lu_send_challenge {
1005 	u_char		type;
1006 	l_uint		agid:2;
1007 	l_dvd_challenge	chal;
1008 };
1009 
1010 struct l_dvd_lu_send_title_key {
1011 	u_char		type;
1012 	l_uint		agid:2;
1013 	l_dvd_key	title_key;
1014 	l_int		lba;
1015 	l_uint		cpm:1;
1016 	l_uint		cp_sec:1;
1017 	l_uint		cgms:2;
1018 };
1019 
1020 struct l_dvd_lu_send_asf {
1021 	u_char		type;
1022 	l_uint		agid:2;
1023 	l_uint		asf:1;
1024 };
1025 
1026 struct l_dvd_host_send_rpcstate {
1027 	u_char		type;
1028 	u_char		pdrc;
1029 };
1030 
1031 struct l_dvd_lu_send_rpcstate {
1032 	u_char		type:2;
1033 	u_char		vra:3;
1034 	u_char		ucca:3;
1035 	u_char		region_mask;
1036 	u_char		rpc_scheme;
1037 };
1038 
1039 typedef union {
1040 	u_char				type;
1041 	struct l_dvd_lu_send_agid	lsa;
1042 	struct l_dvd_host_send_challenge hsc;
1043 	struct l_dvd_send_key		lsk;
1044 	struct l_dvd_lu_send_challenge	lsc;
1045 	struct l_dvd_send_key		hsk;
1046 	struct l_dvd_lu_send_title_key	lstk;
1047 	struct l_dvd_lu_send_asf	lsasf;
1048 	struct l_dvd_host_send_rpcstate	hrpcs;
1049 	struct l_dvd_lu_send_rpcstate	lrpcs;
1050 } l_dvd_authinfo;
1051 
1052 static void
1053 bsd_to_linux_msf_lba(u_char af, union msf_lba *bp, union linux_cdrom_addr *lp)
1054 {
1055 	if (af == CD_LBA_FORMAT)
1056 		lp->lba = bp->lba;
1057 	else {
1058 		lp->msf.minute = bp->msf.minute;
1059 		lp->msf.second = bp->msf.second;
1060 		lp->msf.frame = bp->msf.frame;
1061 	}
1062 }
1063 
1064 static void
1065 set_linux_cdrom_addr(union linux_cdrom_addr *addr, int format, int lba)
1066 {
1067 	if (format == LINUX_CDROM_MSF) {
1068 		addr->msf.frame = lba % 75;
1069 		lba /= 75;
1070 		lba += 2;
1071 		addr->msf.second = lba % 60;
1072 		addr->msf.minute = lba / 60;
1073 	} else
1074 		addr->lba = lba;
1075 }
1076 
1077 static int
1078 linux_to_bsd_dvd_struct(l_dvd_struct *lp, struct dvd_struct *bp)
1079 {
1080 	bp->format = lp->type;
1081 	switch (bp->format) {
1082 	case DVD_STRUCT_PHYSICAL:
1083 		if (bp->layer_num >= 4)
1084 			return (EINVAL);
1085 		bp->layer_num = lp->physical.layer_num;
1086 		break;
1087 	case DVD_STRUCT_COPYRIGHT:
1088 		bp->layer_num = lp->copyright.layer_num;
1089 		break;
1090 	case DVD_STRUCT_DISCKEY:
1091 		bp->agid = lp->disckey.agid;
1092 		break;
1093 	case DVD_STRUCT_BCA:
1094 	case DVD_STRUCT_MANUFACT:
1095 		break;
1096 	default:
1097 		return (EINVAL);
1098 	}
1099 	return (0);
1100 }
1101 
1102 static int
1103 bsd_to_linux_dvd_struct(struct dvd_struct *bp, l_dvd_struct *lp)
1104 {
1105 	switch (bp->format) {
1106 	case DVD_STRUCT_PHYSICAL: {
1107 		struct dvd_layer *blp = (struct dvd_layer *)bp->data;
1108 		struct l_dvd_layer *llp = &lp->physical.layer[bp->layer_num];
1109 		memset(llp, 0, sizeof(*llp));
1110 		llp->book_version = blp->book_version;
1111 		llp->book_type = blp->book_type;
1112 		llp->min_rate = blp->max_rate;
1113 		llp->disc_size = blp->disc_size;
1114 		llp->layer_type = blp->layer_type;
1115 		llp->track_path = blp->track_path;
1116 		llp->nlayers = blp->nlayers;
1117 		llp->track_density = blp->track_density;
1118 		llp->linear_density = blp->linear_density;
1119 		llp->bca = blp->bca;
1120 		llp->start_sector = blp->start_sector;
1121 		llp->end_sector = blp->end_sector;
1122 		llp->end_sector_l0 = blp->end_sector_l0;
1123 		break;
1124 	}
1125 	case DVD_STRUCT_COPYRIGHT:
1126 		lp->copyright.cpst = bp->cpst;
1127 		lp->copyright.rmi = bp->rmi;
1128 		break;
1129 	case DVD_STRUCT_DISCKEY:
1130 		memcpy(lp->disckey.value, bp->data, sizeof(lp->disckey.value));
1131 		break;
1132 	case DVD_STRUCT_BCA:
1133 		lp->bca.len = bp->length;
1134 		memcpy(lp->bca.value, bp->data, sizeof(lp->bca.value));
1135 		break;
1136 	case DVD_STRUCT_MANUFACT:
1137 		lp->manufact.len = bp->length;
1138 		memcpy(lp->manufact.value, bp->data,
1139 		    sizeof(lp->manufact.value));
1140 		/* lp->manufact.layer_num is unused in linux (redhat 7.0) */
1141 		break;
1142 	default:
1143 		return (EINVAL);
1144 	}
1145 	return (0);
1146 }
1147 
1148 static int
1149 linux_to_bsd_dvd_authinfo(l_dvd_authinfo *lp, int *bcode,
1150     struct dvd_authinfo *bp)
1151 {
1152 	switch (lp->type) {
1153 	case LINUX_DVD_LU_SEND_AGID:
1154 		*bcode = DVDIOCREPORTKEY;
1155 		bp->format = DVD_REPORT_AGID;
1156 		bp->agid = lp->lsa.agid;
1157 		break;
1158 	case LINUX_DVD_HOST_SEND_CHALLENGE:
1159 		*bcode = DVDIOCSENDKEY;
1160 		bp->format = DVD_SEND_CHALLENGE;
1161 		bp->agid = lp->hsc.agid;
1162 		memcpy(bp->keychal, lp->hsc.chal, 10);
1163 		break;
1164 	case LINUX_DVD_LU_SEND_KEY1:
1165 		*bcode = DVDIOCREPORTKEY;
1166 		bp->format = DVD_REPORT_KEY1;
1167 		bp->agid = lp->lsk.agid;
1168 		break;
1169 	case LINUX_DVD_LU_SEND_CHALLENGE:
1170 		*bcode = DVDIOCREPORTKEY;
1171 		bp->format = DVD_REPORT_CHALLENGE;
1172 		bp->agid = lp->lsc.agid;
1173 		break;
1174 	case LINUX_DVD_HOST_SEND_KEY2:
1175 		*bcode = DVDIOCSENDKEY;
1176 		bp->format = DVD_SEND_KEY2;
1177 		bp->agid = lp->hsk.agid;
1178 		memcpy(bp->keychal, lp->hsk.key, 5);
1179 		break;
1180 	case LINUX_DVD_LU_SEND_TITLE_KEY:
1181 		*bcode = DVDIOCREPORTKEY;
1182 		bp->format = DVD_REPORT_TITLE_KEY;
1183 		bp->agid = lp->lstk.agid;
1184 		bp->lba = lp->lstk.lba;
1185 		break;
1186 	case LINUX_DVD_LU_SEND_ASF:
1187 		*bcode = DVDIOCREPORTKEY;
1188 		bp->format = DVD_REPORT_ASF;
1189 		bp->agid = lp->lsasf.agid;
1190 		break;
1191 	case LINUX_DVD_INVALIDATE_AGID:
1192 		*bcode = DVDIOCREPORTKEY;
1193 		bp->format = DVD_INVALIDATE_AGID;
1194 		bp->agid = lp->lsa.agid;
1195 		break;
1196 	case LINUX_DVD_LU_SEND_RPC_STATE:
1197 		*bcode = DVDIOCREPORTKEY;
1198 		bp->format = DVD_REPORT_RPC;
1199 		break;
1200 	case LINUX_DVD_HOST_SEND_RPC_STATE:
1201 		*bcode = DVDIOCSENDKEY;
1202 		bp->format = DVD_SEND_RPC;
1203 		bp->region = lp->hrpcs.pdrc;
1204 		break;
1205 	default:
1206 		return (EINVAL);
1207 	}
1208 	return (0);
1209 }
1210 
1211 static int
1212 bsd_to_linux_dvd_authinfo(struct dvd_authinfo *bp, l_dvd_authinfo *lp)
1213 {
1214 	switch (lp->type) {
1215 	case LINUX_DVD_LU_SEND_AGID:
1216 		lp->lsa.agid = bp->agid;
1217 		break;
1218 	case LINUX_DVD_HOST_SEND_CHALLENGE:
1219 		lp->type = LINUX_DVD_LU_SEND_KEY1;
1220 		break;
1221 	case LINUX_DVD_LU_SEND_KEY1:
1222 		memcpy(lp->lsk.key, bp->keychal, sizeof(lp->lsk.key));
1223 		break;
1224 	case LINUX_DVD_LU_SEND_CHALLENGE:
1225 		memcpy(lp->lsc.chal, bp->keychal, sizeof(lp->lsc.chal));
1226 		break;
1227 	case LINUX_DVD_HOST_SEND_KEY2:
1228 		lp->type = LINUX_DVD_AUTH_ESTABLISHED;
1229 		break;
1230 	case LINUX_DVD_LU_SEND_TITLE_KEY:
1231 		memcpy(lp->lstk.title_key, bp->keychal,
1232 		    sizeof(lp->lstk.title_key));
1233 		lp->lstk.cpm = bp->cpm;
1234 		lp->lstk.cp_sec = bp->cp_sec;
1235 		lp->lstk.cgms = bp->cgms;
1236 		break;
1237 	case LINUX_DVD_LU_SEND_ASF:
1238 		lp->lsasf.asf = bp->asf;
1239 		break;
1240 	case LINUX_DVD_INVALIDATE_AGID:
1241 		break;
1242 	case LINUX_DVD_LU_SEND_RPC_STATE:
1243 		lp->lrpcs.type = bp->reg_type;
1244 		lp->lrpcs.vra = bp->vend_rsts;
1245 		lp->lrpcs.ucca = bp->user_rsts;
1246 		lp->lrpcs.region_mask = bp->region;
1247 		lp->lrpcs.rpc_scheme = bp->rpc_scheme;
1248 		break;
1249 	case LINUX_DVD_HOST_SEND_RPC_STATE:
1250 		break;
1251 	default:
1252 		return (EINVAL);
1253 	}
1254 	return (0);
1255 }
1256 
1257 static int
1258 linux_ioctl_cdrom(struct thread *td, struct linux_ioctl_args *args)
1259 {
1260 	struct file *fp;
1261 	int error;
1262 
1263 	if ((error = fget(td, args->fd, &fp)) != 0)
1264 		return (error);
1265 	switch (args->cmd & 0xffff) {
1266 
1267 	case LINUX_CDROMPAUSE:
1268 		args->cmd = CDIOCPAUSE;
1269 		error = (ioctl(td, (struct ioctl_args *)args));
1270 		break;
1271 
1272 	case LINUX_CDROMRESUME:
1273 		args->cmd = CDIOCRESUME;
1274 		error = (ioctl(td, (struct ioctl_args *)args));
1275 		break;
1276 
1277 	case LINUX_CDROMPLAYMSF:
1278 		args->cmd = CDIOCPLAYMSF;
1279 		error = (ioctl(td, (struct ioctl_args *)args));
1280 		break;
1281 
1282 	case LINUX_CDROMPLAYTRKIND:
1283 		args->cmd = CDIOCPLAYTRACKS;
1284 		error = (ioctl(td, (struct ioctl_args *)args));
1285 		break;
1286 
1287 	case LINUX_CDROMREADTOCHDR: {
1288 		struct ioc_toc_header th;
1289 		struct linux_cdrom_tochdr lth;
1290 		error = fo_ioctl(fp, CDIOREADTOCHEADER, (caddr_t)&th,
1291 		    td->td_ucred, td);
1292 		if (!error) {
1293 			lth.cdth_trk0 = th.starting_track;
1294 			lth.cdth_trk1 = th.ending_track;
1295 			copyout(&lth, (caddr_t)args->arg, sizeof(lth));
1296 		}
1297 		break;
1298 	}
1299 
1300 	case LINUX_CDROMREADTOCENTRY: {
1301 		struct linux_cdrom_tocentry lte, *ltep =
1302 		    (struct linux_cdrom_tocentry *)args->arg;
1303 		struct ioc_read_toc_single_entry irtse;
1304 		irtse.address_format = ltep->cdte_format;
1305 		irtse.track = ltep->cdte_track;
1306 		error = fo_ioctl(fp, CDIOREADTOCENTRY, (caddr_t)&irtse,
1307 		    td->td_ucred, td);
1308 		if (!error) {
1309 			lte = *ltep;
1310 			lte.cdte_ctrl = irtse.entry.control;
1311 			lte.cdte_adr = irtse.entry.addr_type;
1312 			bsd_to_linux_msf_lba(irtse.address_format,
1313 			    &irtse.entry.addr, &lte.cdte_addr);
1314 			copyout(&lte, (caddr_t)args->arg, sizeof(lte));
1315 		}
1316 		break;
1317 	}
1318 
1319 	case LINUX_CDROMSTOP:
1320 		args->cmd = CDIOCSTOP;
1321 		error = (ioctl(td, (struct ioctl_args *)args));
1322 		break;
1323 
1324 	case LINUX_CDROMSTART:
1325 		args->cmd = CDIOCSTART;
1326 		error = (ioctl(td, (struct ioctl_args *)args));
1327 		break;
1328 
1329 	case LINUX_CDROMEJECT:
1330 		args->cmd = CDIOCEJECT;
1331 		error = (ioctl(td, (struct ioctl_args *)args));
1332 		break;
1333 
1334 	/* LINUX_CDROMVOLCTRL */
1335 
1336 	case LINUX_CDROMSUBCHNL: {
1337 		struct linux_cdrom_subchnl sc;
1338 		struct ioc_read_subchannel bsdsc;
1339 		struct cd_sub_channel_info *bsdinfo;
1340 		caddr_t sg = stackgap_init();
1341 		bsdinfo = (struct cd_sub_channel_info*)stackgap_alloc(&sg,
1342 		    sizeof(struct cd_sub_channel_info));
1343 		bsdsc.address_format = CD_LBA_FORMAT;
1344 		bsdsc.data_format = CD_CURRENT_POSITION;
1345 		bsdsc.track = 0;
1346 		bsdsc.data_len = sizeof(struct cd_sub_channel_info);
1347 		bsdsc.data = bsdinfo;
1348 		error = fo_ioctl(fp, CDIOCREADSUBCHANNEL, (caddr_t)&bsdsc,
1349 		    td->td_ucred, td);
1350 		if (error)
1351 			break;
1352 		error = copyin((caddr_t)args->arg, &sc,
1353 		    sizeof(struct linux_cdrom_subchnl));
1354 		if (error)
1355 			break;
1356 		sc.cdsc_audiostatus = bsdinfo->header.audio_status;
1357 		sc.cdsc_adr = bsdinfo->what.position.addr_type;
1358 		sc.cdsc_ctrl = bsdinfo->what.position.control;
1359 		sc.cdsc_trk = bsdinfo->what.position.track_number;
1360 		sc.cdsc_ind = bsdinfo->what.position.index_number;
1361 		set_linux_cdrom_addr(&sc.cdsc_absaddr, sc.cdsc_format,
1362 		    bsdinfo->what.position.absaddr.lba);
1363 		set_linux_cdrom_addr(&sc.cdsc_reladdr, sc.cdsc_format,
1364 		    bsdinfo->what.position.reladdr.lba);
1365 		error = copyout(&sc, (caddr_t)args->arg,
1366 		    sizeof(struct linux_cdrom_subchnl));
1367 		break;
1368 	}
1369 
1370 	/* LINUX_CDROMREADMODE2 */
1371 	/* LINUX_CDROMREADMODE1 */
1372 	/* LINUX_CDROMREADAUDIO */
1373 	/* LINUX_CDROMEJECT_SW */
1374 	/* LINUX_CDROMMULTISESSION */
1375 	/* LINUX_CDROM_GET_UPC */
1376 
1377 	case LINUX_CDROMRESET:
1378 		args->cmd = CDIOCRESET;
1379 		error = (ioctl(td, (struct ioctl_args *)args));
1380 		break;
1381 
1382 	/* LINUX_CDROMVOLREAD */
1383 	/* LINUX_CDROMREADRAW */
1384 	/* LINUX_CDROMREADCOOKED */
1385 	/* LINUX_CDROMSEEK */
1386 	/* LINUX_CDROMPLAYBLK */
1387 	/* LINUX_CDROMREADALL */
1388 	/* LINUX_CDROMCLOSETRAY */
1389 	/* LINUX_CDROMLOADFROMSLOT */
1390 	/* LINUX_CDROMGETSPINDOWN */
1391 	/* LINUX_CDROMSETSPINDOWN */
1392 	/* LINUX_CDROM_SET_OPTIONS */
1393 	/* LINUX_CDROM_CLEAR_OPTIONS */
1394 	/* LINUX_CDROM_SELECT_SPEED */
1395 	/* LINUX_CDROM_SELECT_DISC */
1396 	/* LINUX_CDROM_MEDIA_CHANGED */
1397 	/* LINUX_CDROM_DRIVE_STATUS */
1398 	/* LINUX_CDROM_DISC_STATUS */
1399 	/* LINUX_CDROM_CHANGER_NSLOTS */
1400 	/* LINUX_CDROM_LOCKDOOR */
1401 	/* LINUX_CDROM_DEBUG */
1402 	/* LINUX_CDROM_GET_CAPABILITY */
1403 	/* LINUX_CDROMAUDIOBUFSIZ */
1404 
1405 	case LINUX_DVD_READ_STRUCT: {
1406 		l_dvd_struct lds;
1407 		struct dvd_struct bds;
1408 
1409 		error = copyin((caddr_t)args->arg, &lds, sizeof(l_dvd_struct));
1410 		if (error)
1411 			break;
1412 		error = linux_to_bsd_dvd_struct(&lds, &bds);
1413 		if (error)
1414 			break;
1415 		error = fo_ioctl(fp, DVDIOCREADSTRUCTURE, (caddr_t)&bds,
1416 		    td->td_ucred, td);
1417 		if (error)
1418 			break;
1419 		error = bsd_to_linux_dvd_struct(&bds, &lds);
1420 		if (error)
1421 			break;
1422 		error = copyout(&lds, (caddr_t)args->arg,
1423 				sizeof(l_dvd_struct));
1424 		break;
1425 	}
1426 
1427 	/* LINUX_DVD_WRITE_STRUCT */
1428 
1429 	case LINUX_DVD_AUTH: {
1430 		l_dvd_authinfo lda;
1431 		struct dvd_authinfo bda;
1432 		int bcode;
1433 
1434 		error = copyin((caddr_t)args->arg, &lda,
1435 		    sizeof(l_dvd_authinfo));
1436 		if (error)
1437 			break;
1438 		error = linux_to_bsd_dvd_authinfo(&lda, &bcode, &bda);
1439 		if (error)
1440 			break;
1441 		error = fo_ioctl(fp, bcode, (caddr_t)&bda, td->td_ucred,
1442 		    td);
1443 		if (error) {
1444 			if (lda.type == LINUX_DVD_HOST_SEND_KEY2) {
1445 				lda.type = LINUX_DVD_AUTH_FAILURE;
1446 				copyout(&lda, (caddr_t)args->arg,
1447 				    sizeof(l_dvd_authinfo));
1448 			}
1449 			break;
1450 		}
1451 		error = bsd_to_linux_dvd_authinfo(&bda, &lda);
1452 		if (error)
1453 			break;
1454 		error = copyout(&lda, (caddr_t)args->arg,
1455 				sizeof(l_dvd_authinfo));
1456 		break;
1457 	}
1458 
1459 	/* LINUX_CDROM_SEND_PACKET */
1460 	/* LINUX_CDROM_NEXT_WRITABLE */
1461 	/* LINUX_CDROM_LAST_WRITTEN */
1462 
1463 	default:
1464 		error = ENOIOCTL;
1465 		break;
1466 	}
1467 
1468 	fdrop(fp, td);
1469 	return (error);
1470 }
1471 
1472 /*
1473  * Sound related ioctls
1474  */
1475 
1476 static u_int32_t dirbits[4] = { IOC_VOID, IOC_IN, IOC_OUT, IOC_INOUT };
1477 
1478 #define	SETDIR(c)	(((c) & ~IOC_DIRMASK) | dirbits[args->cmd >> 30])
1479 
1480 static int
1481 linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
1482 {
1483 
1484 	switch (args->cmd & 0xffff) {
1485 
1486 	case LINUX_SOUND_MIXER_WRITE_VOLUME:
1487 		args->cmd = SETDIR(SOUND_MIXER_WRITE_VOLUME);
1488 		return (ioctl(td, (struct ioctl_args *)args));
1489 
1490 	case LINUX_SOUND_MIXER_WRITE_BASS:
1491 		args->cmd = SETDIR(SOUND_MIXER_WRITE_BASS);
1492 		return (ioctl(td, (struct ioctl_args *)args));
1493 
1494 	case LINUX_SOUND_MIXER_WRITE_TREBLE:
1495 		args->cmd = SETDIR(SOUND_MIXER_WRITE_TREBLE);
1496 		return (ioctl(td, (struct ioctl_args *)args));
1497 
1498 	case LINUX_SOUND_MIXER_WRITE_SYNTH:
1499 		args->cmd = SETDIR(SOUND_MIXER_WRITE_SYNTH);
1500 		return (ioctl(td, (struct ioctl_args *)args));
1501 
1502 	case LINUX_SOUND_MIXER_WRITE_PCM:
1503 		args->cmd = SETDIR(SOUND_MIXER_WRITE_PCM);
1504 		return (ioctl(td, (struct ioctl_args *)args));
1505 
1506 	case LINUX_SOUND_MIXER_WRITE_SPEAKER:
1507 		args->cmd = SETDIR(SOUND_MIXER_WRITE_SPEAKER);
1508 		return (ioctl(td, (struct ioctl_args *)args));
1509 
1510 	case LINUX_SOUND_MIXER_WRITE_LINE:
1511 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE);
1512 		return (ioctl(td, (struct ioctl_args *)args));
1513 
1514 	case LINUX_SOUND_MIXER_WRITE_MIC:
1515 		args->cmd = SETDIR(SOUND_MIXER_WRITE_MIC);
1516 		return (ioctl(td, (struct ioctl_args *)args));
1517 
1518 	case LINUX_SOUND_MIXER_WRITE_CD:
1519 		args->cmd = SETDIR(SOUND_MIXER_WRITE_CD);
1520 		return (ioctl(td, (struct ioctl_args *)args));
1521 
1522 	case LINUX_SOUND_MIXER_WRITE_IMIX:
1523 		args->cmd = SETDIR(SOUND_MIXER_WRITE_IMIX);
1524 		return (ioctl(td, (struct ioctl_args *)args));
1525 
1526 	case LINUX_SOUND_MIXER_WRITE_ALTPCM:
1527 		args->cmd = SETDIR(SOUND_MIXER_WRITE_ALTPCM);
1528 		return (ioctl(td, (struct ioctl_args *)args));
1529 
1530 	case LINUX_SOUND_MIXER_WRITE_RECLEV:
1531 		args->cmd = SETDIR(SOUND_MIXER_WRITE_RECLEV);
1532 		return (ioctl(td, (struct ioctl_args *)args));
1533 
1534 	case LINUX_SOUND_MIXER_WRITE_IGAIN:
1535 		args->cmd = SETDIR(SOUND_MIXER_WRITE_IGAIN);
1536 		return (ioctl(td, (struct ioctl_args *)args));
1537 
1538 	case LINUX_SOUND_MIXER_WRITE_OGAIN:
1539 		args->cmd = SETDIR(SOUND_MIXER_WRITE_OGAIN);
1540 		return (ioctl(td, (struct ioctl_args *)args));
1541 
1542 	case LINUX_SOUND_MIXER_WRITE_LINE1:
1543 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE1);
1544 		return (ioctl(td, (struct ioctl_args *)args));
1545 
1546 	case LINUX_SOUND_MIXER_WRITE_LINE2:
1547 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE2);
1548 		return (ioctl(td, (struct ioctl_args *)args));
1549 
1550 	case LINUX_SOUND_MIXER_WRITE_LINE3:
1551 		args->cmd = SETDIR(SOUND_MIXER_WRITE_LINE3);
1552 		return (ioctl(td, (struct ioctl_args *)args));
1553 
1554 	case LINUX_OSS_GETVERSION: {
1555 		int version = linux_get_oss_version(td->td_proc);
1556 		return (copyout(&version, (caddr_t)args->arg, sizeof(int)));
1557 	}
1558 
1559 	case LINUX_SOUND_MIXER_READ_DEVMASK:
1560 		args->cmd = SOUND_MIXER_READ_DEVMASK;
1561 		return (ioctl(td, (struct ioctl_args *)args));
1562 
1563 	case LINUX_SOUND_MIXER_WRITE_RECSRC:
1564 		args->cmd = SETDIR(SOUND_MIXER_WRITE_RECSRC);
1565 		return (ioctl(td, (struct ioctl_args *)args));
1566 
1567 	case LINUX_SNDCTL_DSP_RESET:
1568 		args->cmd = SNDCTL_DSP_RESET;
1569 		return (ioctl(td, (struct ioctl_args *)args));
1570 
1571 	case LINUX_SNDCTL_DSP_SYNC:
1572 		args->cmd = SNDCTL_DSP_SYNC;
1573 		return (ioctl(td, (struct ioctl_args *)args));
1574 
1575 	case LINUX_SNDCTL_DSP_SPEED:
1576 		args->cmd = SNDCTL_DSP_SPEED;
1577 		return (ioctl(td, (struct ioctl_args *)args));
1578 
1579 	case LINUX_SNDCTL_DSP_STEREO:
1580 		args->cmd = SNDCTL_DSP_STEREO;
1581 		return (ioctl(td, (struct ioctl_args *)args));
1582 
1583 	case LINUX_SNDCTL_DSP_GETBLKSIZE: /* LINUX_SNDCTL_DSP_SETBLKSIZE */
1584 		args->cmd = SNDCTL_DSP_GETBLKSIZE;
1585 		return (ioctl(td, (struct ioctl_args *)args));
1586 
1587 	case LINUX_SNDCTL_DSP_SETFMT:
1588 		args->cmd = SNDCTL_DSP_SETFMT;
1589 		return (ioctl(td, (struct ioctl_args *)args));
1590 
1591 	case LINUX_SOUND_PCM_WRITE_CHANNELS:
1592 		args->cmd = SOUND_PCM_WRITE_CHANNELS;
1593 		return (ioctl(td, (struct ioctl_args *)args));
1594 
1595 	case LINUX_SOUND_PCM_WRITE_FILTER:
1596 		args->cmd = SOUND_PCM_WRITE_FILTER;
1597 		return (ioctl(td, (struct ioctl_args *)args));
1598 
1599 	case LINUX_SNDCTL_DSP_POST:
1600 		args->cmd = SNDCTL_DSP_POST;
1601 		return (ioctl(td, (struct ioctl_args *)args));
1602 
1603 	case LINUX_SNDCTL_DSP_SUBDIVIDE:
1604 		args->cmd = SNDCTL_DSP_SUBDIVIDE;
1605 		return (ioctl(td, (struct ioctl_args *)args));
1606 
1607 	case LINUX_SNDCTL_DSP_SETFRAGMENT:
1608 		args->cmd = SNDCTL_DSP_SETFRAGMENT;
1609 		return (ioctl(td, (struct ioctl_args *)args));
1610 
1611 	case LINUX_SNDCTL_DSP_GETFMTS:
1612 		args->cmd = SNDCTL_DSP_GETFMTS;
1613 		return (ioctl(td, (struct ioctl_args *)args));
1614 
1615 	case LINUX_SNDCTL_DSP_GETOSPACE:
1616 		args->cmd = SNDCTL_DSP_GETOSPACE;
1617 		return (ioctl(td, (struct ioctl_args *)args));
1618 
1619 	case LINUX_SNDCTL_DSP_GETISPACE:
1620 		args->cmd = SNDCTL_DSP_GETISPACE;
1621 		return (ioctl(td, (struct ioctl_args *)args));
1622 
1623 	case LINUX_SNDCTL_DSP_NONBLOCK:
1624 		args->cmd = SNDCTL_DSP_NONBLOCK;
1625 		return (ioctl(td, (struct ioctl_args *)args));
1626 
1627 	case LINUX_SNDCTL_DSP_GETCAPS:
1628 		args->cmd = SNDCTL_DSP_GETCAPS;
1629 		return (ioctl(td, (struct ioctl_args *)args));
1630 
1631 	case LINUX_SNDCTL_DSP_SETTRIGGER: /* LINUX_SNDCTL_GETTRIGGER */
1632 		args->cmd = SNDCTL_DSP_SETTRIGGER;
1633 		return (ioctl(td, (struct ioctl_args *)args));
1634 
1635 	case LINUX_SNDCTL_DSP_GETIPTR:
1636 		args->cmd = SNDCTL_DSP_GETIPTR;
1637 		return (ioctl(td, (struct ioctl_args *)args));
1638 
1639 	case LINUX_SNDCTL_DSP_GETOPTR:
1640 		args->cmd = SNDCTL_DSP_GETOPTR;
1641 		return (ioctl(td, (struct ioctl_args *)args));
1642 
1643 	case LINUX_SNDCTL_DSP_GETODELAY:
1644 		args->cmd = SNDCTL_DSP_GETODELAY;
1645 		return (ioctl(td, (struct ioctl_args *)args));
1646 
1647 	case LINUX_SNDCTL_SEQ_RESET:
1648 		args->cmd = SNDCTL_SEQ_RESET;
1649 		return (ioctl(td, (struct ioctl_args *)args));
1650 
1651 	case LINUX_SNDCTL_SEQ_SYNC:
1652 		args->cmd = SNDCTL_SEQ_SYNC;
1653 		return (ioctl(td, (struct ioctl_args *)args));
1654 
1655 	case LINUX_SNDCTL_SYNTH_INFO:
1656 		args->cmd = SNDCTL_SYNTH_INFO;
1657 		return (ioctl(td, (struct ioctl_args *)args));
1658 
1659 	case LINUX_SNDCTL_SEQ_CTRLRATE:
1660 		args->cmd = SNDCTL_SEQ_CTRLRATE;
1661 		return (ioctl(td, (struct ioctl_args *)args));
1662 
1663 	case LINUX_SNDCTL_SEQ_GETOUTCOUNT:
1664 		args->cmd = SNDCTL_SEQ_GETOUTCOUNT;
1665 		return (ioctl(td, (struct ioctl_args *)args));
1666 
1667 	case LINUX_SNDCTL_SEQ_GETINCOUNT:
1668 		args->cmd = SNDCTL_SEQ_GETINCOUNT;
1669 		return (ioctl(td, (struct ioctl_args *)args));
1670 
1671 	case LINUX_SNDCTL_SEQ_PERCMODE:
1672 		args->cmd = SNDCTL_SEQ_PERCMODE;
1673 		return (ioctl(td, (struct ioctl_args *)args));
1674 
1675 	case LINUX_SNDCTL_FM_LOAD_INSTR:
1676 		args->cmd = SNDCTL_FM_LOAD_INSTR;
1677 		return (ioctl(td, (struct ioctl_args *)args));
1678 
1679 	case LINUX_SNDCTL_SEQ_TESTMIDI:
1680 		args->cmd = SNDCTL_SEQ_TESTMIDI;
1681 		return (ioctl(td, (struct ioctl_args *)args));
1682 
1683 	case LINUX_SNDCTL_SEQ_RESETSAMPLES:
1684 		args->cmd = SNDCTL_SEQ_RESETSAMPLES;
1685 		return (ioctl(td, (struct ioctl_args *)args));
1686 
1687 	case LINUX_SNDCTL_SEQ_NRSYNTHS:
1688 		args->cmd = SNDCTL_SEQ_NRSYNTHS;
1689 		return (ioctl(td, (struct ioctl_args *)args));
1690 
1691 	case LINUX_SNDCTL_SEQ_NRMIDIS:
1692 		args->cmd = SNDCTL_SEQ_NRMIDIS;
1693 		return (ioctl(td, (struct ioctl_args *)args));
1694 
1695 	case LINUX_SNDCTL_MIDI_INFO:
1696 		args->cmd = SNDCTL_MIDI_INFO;
1697 		return (ioctl(td, (struct ioctl_args *)args));
1698 
1699 	case LINUX_SNDCTL_SEQ_TRESHOLD:
1700 		args->cmd = SNDCTL_SEQ_TRESHOLD;
1701 		return (ioctl(td, (struct ioctl_args *)args));
1702 
1703 	case LINUX_SNDCTL_SYNTH_MEMAVL:
1704 		args->cmd = SNDCTL_SYNTH_MEMAVL;
1705 		return (ioctl(td, (struct ioctl_args *)args));
1706 
1707 	}
1708 
1709 	return (ENOIOCTL);
1710 }
1711 
1712 /*
1713  * Console related ioctls
1714  */
1715 
1716 #define ISSIGVALID(sig)		((sig) > 0 && (sig) < NSIG)
1717 
1718 static int
1719 linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
1720 {
1721 	struct file *fp;
1722 	int error;
1723 
1724 	if ((error = fget(td, args->fd, &fp)) != 0)
1725 		return (error);
1726 	switch (args->cmd & 0xffff) {
1727 
1728 	case LINUX_KIOCSOUND:
1729 		args->cmd = KIOCSOUND;
1730 		error = (ioctl(td, (struct ioctl_args *)args));
1731 		break;
1732 
1733 	case LINUX_KDMKTONE:
1734 		args->cmd = KDMKTONE;
1735 		error = (ioctl(td, (struct ioctl_args *)args));
1736 		break;
1737 
1738 	case LINUX_KDGETLED:
1739 		args->cmd = KDGETLED;
1740 		error = (ioctl(td, (struct ioctl_args *)args));
1741 		break;
1742 
1743 	case LINUX_KDSETLED:
1744 		args->cmd = KDSETLED;
1745 		error = (ioctl(td, (struct ioctl_args *)args));
1746 		break;
1747 
1748 	case LINUX_KDSETMODE:
1749 		args->cmd = KDSETMODE;
1750 		error = (ioctl(td, (struct ioctl_args *)args));
1751 		break;
1752 
1753 	case LINUX_KDGETMODE:
1754 		args->cmd = KDGETMODE;
1755 		error = (ioctl(td, (struct ioctl_args *)args));
1756 		break;
1757 
1758 	case LINUX_KDGKBMODE:
1759 		args->cmd = KDGKBMODE;
1760 		error = (ioctl(td, (struct ioctl_args *)args));
1761 		break;
1762 
1763 	case LINUX_KDSKBMODE: {
1764 		int kbdmode;
1765 		switch (args->arg) {
1766 		case LINUX_KBD_RAW:
1767 			kbdmode = K_RAW;
1768 			break;
1769 		case LINUX_KBD_XLATE:
1770 			kbdmode = K_XLATE;
1771 			break;
1772 		case LINUX_KBD_MEDIUMRAW:
1773 			kbdmode = K_RAW;
1774 			break;
1775 		default:
1776 			fdrop(fp, td);
1777 			return (EINVAL);
1778 		}
1779 		error = (fo_ioctl(fp, KDSKBMODE, (caddr_t)&kbdmode,
1780 		    td->td_ucred, td));
1781 		break;
1782 	}
1783 
1784 	case LINUX_VT_OPENQRY:
1785 		args->cmd = VT_OPENQRY;
1786 		error = (ioctl(td, (struct ioctl_args *)args));
1787 		break;
1788 
1789 	case LINUX_VT_GETMODE:
1790 		args->cmd = VT_GETMODE;
1791 		error = (ioctl(td, (struct ioctl_args *)args));
1792 		break;
1793 
1794 	case LINUX_VT_SETMODE: {
1795 		struct vt_mode *mode;
1796 		args->cmd = VT_SETMODE;
1797 		mode = (struct vt_mode *)args->arg;
1798 		if (!ISSIGVALID(mode->frsig) && ISSIGVALID(mode->acqsig))
1799 			mode->frsig = mode->acqsig;
1800 		error = (ioctl(td, (struct ioctl_args *)args));
1801 		break;
1802 	}
1803 
1804 	case LINUX_VT_GETSTATE:
1805 		args->cmd = VT_GETACTIVE;
1806 		error = (ioctl(td, (struct ioctl_args *)args));
1807 		break;
1808 
1809 	case LINUX_VT_RELDISP:
1810 		args->cmd = VT_RELDISP;
1811 		error = (ioctl(td, (struct ioctl_args *)args));
1812 		break;
1813 
1814 	case LINUX_VT_ACTIVATE:
1815 		args->cmd = VT_ACTIVATE;
1816 		error = (ioctl(td, (struct ioctl_args *)args));
1817 		break;
1818 
1819 	case LINUX_VT_WAITACTIVE:
1820 		args->cmd = VT_WAITACTIVE;
1821 		error = (ioctl(td, (struct ioctl_args *)args));
1822 		break;
1823 
1824 	default:
1825 		error = ENOIOCTL;
1826 		break;
1827 	}
1828 
1829 	fdrop(fp, td);
1830 	return (error);
1831 }
1832 
1833 /*
1834  * Criteria for interface name translation
1835  */
1836 #define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
1837 
1838 /*
1839  * Interface function used by linprocfs (at the time of writing). It's not
1840  * used by the Linuxulator itself.
1841  */
1842 int
1843 linux_ifname(struct ifnet *ifp, char *buffer, size_t buflen)
1844 {
1845 	struct ifnet *ifscan;
1846 	int ethno;
1847 
1848 	/* Short-circuit non ethernet interfaces */
1849 	if (!IFP_IS_ETH(ifp))
1850 		return (snprintf(buffer, buflen, "%s%d", ifp->if_name,
1851 		    ifp->if_unit));
1852 
1853 	/* Determine the (relative) unit number for ethernet interfaces */
1854 	ethno = 0;
1855 	TAILQ_FOREACH(ifscan, &ifnet, if_link) {
1856 		if (ifscan == ifp)
1857 			return (snprintf(buffer, buflen, "eth%d", ethno));
1858 		if (IFP_IS_ETH(ifscan))
1859 			ethno++;
1860 	}
1861 
1862 	return (0);
1863 }
1864 
1865 /*
1866  * Translate a Linux interface name to a FreeBSD interface name,
1867  * and return the associated ifnet structure
1868  * bsdname and lxname need to be least IFNAMSIZ bytes long, but
1869  * can point to the same buffer.
1870  */
1871 
1872 static struct ifnet *
1873 ifname_linux_to_bsd(const char *lxname, char *bsdname)
1874 {
1875 	struct ifnet *ifp;
1876 	int len, unit;
1877 	char *ep;
1878 	int is_eth, index;
1879 
1880 	for (len = 0; len < LINUX_IFNAMSIZ; ++len)
1881 		if (!isalpha(lxname[len]))
1882 			break;
1883 	if (len == 0 || len == LINUX_IFNAMSIZ)
1884 		return (NULL);
1885 	unit = (int)strtoul(lxname + len, &ep, 10);
1886 	if (ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ)
1887 		return (NULL);
1888 	index = 0;
1889 	is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
1890 	TAILQ_FOREACH(ifp, &ifnet, if_link) {
1891 		/*
1892 		 * Allow Linux programs to use FreeBSD names. Don't presume
1893 		 * we never have an interface named "eth", so don't make
1894 		 * the test optional based on is_eth.
1895 		 */
1896 		if (ifp->if_unit == unit && ifp->if_name[len] == '\0' &&
1897 		    strncmp(ifp->if_name, lxname, len) == 0)
1898 			break;
1899 		if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
1900 			break;
1901 	}
1902 	if (ifp != NULL)
1903 		snprintf(bsdname, IFNAMSIZ, "%s%d", ifp->if_name, ifp->if_unit);
1904 	return (ifp);
1905 }
1906 
1907 /*
1908  * Implement the SIOCGIFCONF ioctl
1909  */
1910 
1911 static int
1912 linux_ifconf(struct thread *td, struct ifconf *uifc)
1913 {
1914 	struct ifconf ifc;
1915 	struct l_ifreq ifr;
1916 	struct ifnet *ifp;
1917 	struct ifaddr *ifa;
1918 	struct iovec iov;
1919 	struct uio uio;
1920 	int error, ethno;
1921 
1922 	error = copyin(uifc, &ifc, sizeof ifc);
1923 	if (error != 0)
1924 		return (error);
1925 
1926 	/* much easier to use uiomove than keep track ourselves */
1927 	iov.iov_base = ifc.ifc_buf;
1928 	iov.iov_len = ifc.ifc_len;
1929 	uio.uio_iov = &iov;
1930 	uio.uio_iovcnt = 1;
1931 	uio.uio_offset = 0;
1932 	uio.uio_resid = ifc.ifc_len;
1933 	uio.uio_segflg = UIO_USERSPACE;
1934 	uio.uio_rw = UIO_READ;
1935 	uio.uio_td = td;
1936 
1937 	/* Keep track of eth interfaces */
1938 	ethno = 0;
1939 
1940 	/* Return all AF_INET addresses of all interfaces */
1941 	TAILQ_FOREACH(ifp, &ifnet, if_link) {
1942 		if (uio.uio_resid <= 0)
1943 			break;
1944 
1945 		bzero(&ifr, sizeof ifr);
1946 		if (IFP_IS_ETH(ifp))
1947 			snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
1948 			    ethno++);
1949 		else
1950 			snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "%s%d",
1951 			    ifp->if_name, ifp->if_unit);
1952 
1953 		/* Walk the address list */
1954 		TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
1955 			struct sockaddr *sa = ifa->ifa_addr;
1956 
1957 			if (uio.uio_resid <= 0)
1958 				break;
1959 
1960 			if (sa->sa_family == AF_INET) {
1961 				ifr.ifr_addr.sa_family = LINUX_AF_INET;
1962 				memcpy(ifr.ifr_addr.sa_data, sa->sa_data,
1963 				    sizeof(ifr.ifr_addr.sa_data));
1964 
1965 				error = uiomove((caddr_t)&ifr, sizeof ifr,
1966 				    &uio);
1967 				if (error != 0)
1968 					return (error);
1969 			}
1970 		}
1971 	}
1972 
1973 	ifc.ifc_len -= uio.uio_resid;
1974 	error = copyout(&ifc, uifc, sizeof ifc);
1975 
1976 	return (error);
1977 }
1978 
1979 static int
1980 linux_gifflags(struct thread *td, struct ifnet *ifp, struct l_ifreq *ifr)
1981 {
1982 	l_short flags;
1983 
1984 	flags = ifp->if_flags & 0xffff;
1985 	/* these flags have no Linux equivalent */
1986 	flags &= ~(IFF_SMART|IFF_OACTIVE|IFF_SIMPLEX|
1987 	    IFF_LINK0|IFF_LINK1|IFF_LINK2);
1988 	/* Linux' multicast flag is in a different bit */
1989 	if (flags & IFF_MULTICAST) {
1990 		flags &= ~IFF_MULTICAST;
1991 		flags |= 0x1000;
1992 	}
1993 
1994 	return (copyout(&flags, &ifr->ifr_flags, sizeof flags));
1995 }
1996 
1997 #define ARPHRD_ETHER	1
1998 #define ARPHRD_LOOPBACK	772
1999 
2000 static int
2001 linux_gifhwaddr(struct ifnet *ifp, struct l_ifreq *ifr)
2002 {
2003 	struct ifaddr *ifa;
2004 	struct sockaddr_dl *sdl;
2005 	struct l_sockaddr lsa;
2006 
2007 	if (ifp->if_type == IFT_LOOP) {
2008 		bzero(&lsa, sizeof lsa);
2009 		lsa.sa_family = ARPHRD_LOOPBACK;
2010 		return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof lsa));
2011 	}
2012 
2013 	if (ifp->if_type != IFT_ETHER)
2014 		return (ENOENT);
2015 
2016 	TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
2017 		sdl = (struct sockaddr_dl*)ifa->ifa_addr;
2018 		if (sdl != NULL && (sdl->sdl_family == AF_LINK) &&
2019 		    (sdl->sdl_type == IFT_ETHER)) {
2020 			bzero(&lsa, sizeof lsa);
2021 			lsa.sa_family = ARPHRD_ETHER;
2022 			bcopy(LLADDR(sdl), lsa.sa_data, LINUX_IFHWADDRLEN);
2023 			return (copyout(&lsa, &ifr->ifr_hwaddr, sizeof lsa));
2024 		}
2025 	}
2026 
2027 	return (ENOENT);
2028 }
2029 
2030 /*
2031  * Socket related ioctls
2032  */
2033 
2034 static int
2035 linux_ioctl_socket(struct thread *td, struct linux_ioctl_args *args)
2036 {
2037 	char lifname[LINUX_IFNAMSIZ], ifname[IFNAMSIZ];
2038 	struct ifnet *ifp;
2039 	struct file *fp;
2040 	int error, type;
2041 
2042 	KASSERT(LINUX_IFNAMSIZ == IFNAMSIZ,
2043 	    ("%s(): LINUX_IFNAMSIZ != IFNAMSIZ", __func__));
2044 
2045 	ifp = NULL;
2046 	error = 0;
2047 
2048 	if ((error = fget(td, args->fd, &fp)) != 0)
2049 		return (error);
2050 	type = fp->f_type;
2051 	fdrop(fp, td);
2052 	if (type != DTYPE_SOCKET) {
2053 		/* not a socket - probably a tap / vmnet device */
2054 		switch (args->cmd) {
2055 		case LINUX_SIOCGIFADDR:
2056 		case LINUX_SIOCSIFADDR:
2057 		case LINUX_SIOCGIFFLAGS:
2058 			return (linux_ioctl_special(td, args));
2059 		default:
2060 			return (ENOIOCTL);
2061 		}
2062 	}
2063 
2064 	switch (args->cmd & 0xffff) {
2065 
2066 	case LINUX_FIOGETOWN:
2067 	case LINUX_FIOSETOWN:
2068 	case LINUX_SIOCADDMULTI:
2069 	case LINUX_SIOCATMARK:
2070 	case LINUX_SIOCDELMULTI:
2071 	case LINUX_SIOCGIFCONF:
2072 	case LINUX_SIOCGPGRP:
2073 	case LINUX_SIOCSPGRP:
2074 		/* these ioctls don't take an interface name */
2075 #ifdef DEBUG
2076 		printf("%s(): ioctl %d\n", __func__,
2077 		    args->cmd & 0xffff);
2078 #endif
2079 		break;
2080 
2081 	case LINUX_SIOCGIFFLAGS:
2082 	case LINUX_SIOCGIFADDR:
2083 	case LINUX_SIOCSIFADDR:
2084 	case LINUX_SIOCGIFDSTADDR:
2085 	case LINUX_SIOCGIFBRDADDR:
2086 	case LINUX_SIOCGIFNETMASK:
2087 	case LINUX_SIOCSIFNETMASK:
2088 	case LINUX_SIOCGIFMTU:
2089 	case LINUX_SIOCSIFMTU:
2090 	case LINUX_SIOCSIFNAME:
2091 	case LINUX_SIOCGIFHWADDR:
2092 	case LINUX_SIOCSIFHWADDR:
2093 	case LINUX_SIOCDEVPRIVATE:
2094 	case LINUX_SIOCDEVPRIVATE+1:
2095 		/* copy in the interface name and translate it. */
2096 		error = copyin((char *)args->arg, lifname, LINUX_IFNAMSIZ);
2097 		if (error != 0)
2098 			return (error);
2099 #ifdef DEBUG
2100 		printf("%s(): ioctl %d on %.*s\n", __func__,
2101 		    args->cmd & 0xffff, LINUX_IFNAMSIZ, lifname);
2102 #endif
2103 		ifp = ifname_linux_to_bsd(lifname, ifname);
2104 		if (ifp == NULL)
2105 			return (EINVAL);
2106 		/*
2107 		 * We need to copy it back out in case we pass the
2108 		 * request on to our native ioctl(), which will expect
2109 		 * the ifreq to be in user space and have the correct
2110 		 * interface name.
2111 		 */
2112 		error = copyout(ifname, (char *)args->arg, IFNAMSIZ);
2113 		if (error != 0)
2114 			return (error);
2115 #ifdef DEBUG
2116 		printf("%s(): %s translated to %s\n", __func__,
2117 		    lifname, ifname);
2118 #endif
2119 		break;
2120 
2121 	default:
2122 		return (ENOIOCTL);
2123 	}
2124 
2125 	switch (args->cmd & 0xffff) {
2126 
2127 	case LINUX_FIOSETOWN:
2128 		args->cmd = FIOSETOWN;
2129 		error = ioctl(td, (struct ioctl_args *)args);
2130 		break;
2131 
2132 	case LINUX_SIOCSPGRP:
2133 		args->cmd = SIOCSPGRP;
2134 		error = ioctl(td, (struct ioctl_args *)args);
2135 		break;
2136 
2137 	case LINUX_FIOGETOWN:
2138 		args->cmd = FIOGETOWN;
2139 		error = ioctl(td, (struct ioctl_args *)args);
2140 		break;
2141 
2142 	case LINUX_SIOCGPGRP:
2143 		args->cmd = SIOCGPGRP;
2144 		error = ioctl(td, (struct ioctl_args *)args);
2145 		break;
2146 
2147 	case LINUX_SIOCATMARK:
2148 		args->cmd = SIOCATMARK;
2149 		error = ioctl(td, (struct ioctl_args *)args);
2150 		break;
2151 
2152 	/* LINUX_SIOCGSTAMP */
2153 
2154 	case LINUX_SIOCGIFCONF:
2155 		error = linux_ifconf(td, (struct ifconf *)args->arg);
2156 		break;
2157 
2158 	case LINUX_SIOCGIFFLAGS:
2159 		args->cmd = SIOCGIFFLAGS;
2160 		error = linux_gifflags(td, ifp, (struct l_ifreq *)args->arg);
2161 		break;
2162 
2163 	case LINUX_SIOCGIFADDR:
2164 		args->cmd = OSIOCGIFADDR;
2165 		error = ioctl(td, (struct ioctl_args *)args);
2166 		break;
2167 
2168 	case LINUX_SIOCSIFADDR:
2169 		/* XXX probably doesn't work, included for completeness */
2170 		args->cmd = SIOCSIFADDR;
2171 		error = ioctl(td, (struct ioctl_args *)args);
2172 		break;
2173 
2174 	case LINUX_SIOCGIFDSTADDR:
2175 		args->cmd = OSIOCGIFDSTADDR;
2176 		error = ioctl(td, (struct ioctl_args *)args);
2177 		break;
2178 
2179 	case LINUX_SIOCGIFBRDADDR:
2180 		args->cmd = OSIOCGIFBRDADDR;
2181 		error = ioctl(td, (struct ioctl_args *)args);
2182 		break;
2183 
2184 	case LINUX_SIOCGIFNETMASK:
2185 		args->cmd = OSIOCGIFNETMASK;
2186 		error = ioctl(td, (struct ioctl_args *)args);
2187 		break;
2188 
2189 	case LINUX_SIOCSIFNETMASK:
2190 		error = ENOIOCTL;
2191 		break;
2192 
2193 	case LINUX_SIOCGIFMTU:
2194 		args->cmd = SIOCGIFMTU;
2195 		error = ioctl(td, (struct ioctl_args *)args);
2196 		break;
2197 
2198 	case LINUX_SIOCSIFMTU:
2199 		args->cmd = SIOCSIFMTU;
2200 		error = ioctl(td, (struct ioctl_args *)args);
2201 		break;
2202 
2203 	case LINUX_SIOCSIFNAME:
2204 		error = ENOIOCTL;
2205 		break;
2206 
2207 	case LINUX_SIOCGIFHWADDR:
2208 		error = linux_gifhwaddr(ifp, (struct l_ifreq *)args->arg);
2209 		break;
2210 
2211 	case LINUX_SIOCSIFHWADDR:
2212 		error = ENOIOCTL;
2213 		break;
2214 
2215 	case LINUX_SIOCADDMULTI:
2216 		args->cmd = SIOCADDMULTI;
2217 		error = ioctl(td, (struct ioctl_args *)args);
2218 		break;
2219 
2220 	case LINUX_SIOCDELMULTI:
2221 		args->cmd = SIOCDELMULTI;
2222 		error = ioctl(td, (struct ioctl_args *)args);
2223 		break;
2224 
2225 	/*
2226 	 * XXX This is slightly bogus, but these ioctls are currently
2227 	 * XXX only used by the aironet (if_an) network driver.
2228 	 */
2229 	case LINUX_SIOCDEVPRIVATE:
2230 		args->cmd = SIOCGPRIVATE_0;
2231 		error = ioctl(td, (struct ioctl_args *)args);
2232 		break;
2233 
2234 	case LINUX_SIOCDEVPRIVATE+1:
2235 		args->cmd = SIOCGPRIVATE_1;
2236 		error = ioctl(td, (struct ioctl_args *)args);
2237 		break;
2238 	}
2239 
2240 	if (ifp != NULL)
2241 		/* restore the original interface name */
2242 		copyout(lifname, (char *)args->arg, LINUX_IFNAMSIZ);
2243 
2244 #ifdef DEBUG
2245 	printf("%s(): returning %d\n", __func__, error);
2246 #endif
2247 	return (error);
2248 }
2249 
2250 /*
2251  * Device private ioctl handler
2252  */
2253 static int
2254 linux_ioctl_private(struct thread *td, struct linux_ioctl_args *args)
2255 {
2256 	struct file *fp;
2257 	int error, type;
2258 
2259 	if ((error = fget(td, args->fd, &fp)) != 0)
2260 		return (error);
2261 	type = fp->f_type;
2262 	fdrop(fp, td);
2263 	if (type == DTYPE_SOCKET)
2264 		return (linux_ioctl_socket(td, args));
2265 	return (ENOIOCTL);
2266 }
2267 
2268 /*
2269  * Special ioctl handler
2270  */
2271 static int
2272 linux_ioctl_special(struct thread *td, struct linux_ioctl_args *args)
2273 {
2274 	int error;
2275 
2276 	switch (args->cmd) {
2277 	case LINUX_SIOCGIFADDR:
2278 		args->cmd = SIOCGIFADDR;
2279 		error = ioctl(td, (struct ioctl_args *)args);
2280 		break;
2281 	case LINUX_SIOCSIFADDR:
2282 		args->cmd = SIOCSIFADDR;
2283 		error = ioctl(td, (struct ioctl_args *)args);
2284 		break;
2285 	case LINUX_SIOCGIFFLAGS:
2286 		args->cmd = SIOCGIFFLAGS;
2287 		error = ioctl(td, (struct ioctl_args *)args);
2288 		break;
2289 	default:
2290 		error = ENOIOCTL;
2291 	}
2292 
2293 	return (error);
2294 }
2295 
2296 /*
2297  * main ioctl syscall function
2298  */
2299 
2300 int
2301 linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
2302 {
2303 	struct file *fp;
2304 	struct handler_element *he;
2305 	int error, cmd;
2306 
2307 #ifdef DEBUG
2308 	if (ldebug(ioctl))
2309 		printf(ARGS(ioctl, "%d, %04lx, *"), args->fd,
2310 		    (unsigned long)args->cmd);
2311 #endif
2312 
2313 	if ((error = fget(td, args->fd, &fp)) != 0)
2314 		return (error);
2315 	if ((fp->f_flag & (FREAD|FWRITE)) == 0) {
2316 		fdrop(fp, td);
2317 		return (EBADF);
2318 	}
2319 
2320 	/* Iterate over the ioctl handlers */
2321 	cmd = args->cmd & 0xffff;
2322 	TAILQ_FOREACH(he, &handlers, list) {
2323 		if (cmd >= he->low && cmd <= he->high) {
2324 			error = (*he->func)(td, args);
2325 			if (error != ENOIOCTL) {
2326 				fdrop(fp, td);
2327 				return (error);
2328 			}
2329 		}
2330 	}
2331 	fdrop(fp, td);
2332 
2333 	printf("linux: 'ioctl' fd=%d, cmd=0x%x ('%c',%d) not implemented\n",
2334 	    args->fd, (int)(args->cmd & 0xffff),
2335 	    (int)(args->cmd & 0xff00) >> 8, (int)(args->cmd & 0xff));
2336 
2337 	return (EINVAL);
2338 }
2339 
2340 int
2341 linux_ioctl_register_handler(struct linux_ioctl_handler *h)
2342 {
2343 	struct handler_element *he, *cur;
2344 
2345 	if (h == NULL || h->func == NULL)
2346 		return (EINVAL);
2347 
2348 	/*
2349 	 * Reuse the element if the handler is already on the list, otherwise
2350 	 * create a new element.
2351 	 */
2352 	TAILQ_FOREACH(he, &handlers, list) {
2353 		if (he->func == h->func)
2354 			break;
2355 	}
2356 	if (he == NULL) {
2357 		MALLOC(he, struct handler_element *, sizeof(*he),
2358 		    M_LINUX, M_WAITOK);
2359 		he->func = h->func;
2360 	} else
2361 		TAILQ_REMOVE(&handlers, he, list);
2362 
2363 	/* Initialize range information. */
2364 	he->low = h->low;
2365 	he->high = h->high;
2366 	he->span = h->high - h->low + 1;
2367 
2368 	/* Add the element to the list, sorted on span. */
2369 	TAILQ_FOREACH(cur, &handlers, list) {
2370 		if (cur->span > he->span) {
2371 			TAILQ_INSERT_BEFORE(cur, he, list);
2372 			return (0);
2373 		}
2374 	}
2375 	TAILQ_INSERT_TAIL(&handlers, he, list);
2376 
2377 	return (0);
2378 }
2379 
2380 int
2381 linux_ioctl_unregister_handler(struct linux_ioctl_handler *h)
2382 {
2383 	struct handler_element *he;
2384 
2385 	if (h == NULL || h->func == NULL)
2386 		return (EINVAL);
2387 
2388 	TAILQ_FOREACH(he, &handlers, list) {
2389 		if (he->func == h->func) {
2390 			TAILQ_REMOVE(&handlers, he, list);
2391 			FREE(he, M_LINUX);
2392 			return (0);
2393 		}
2394 	}
2395 
2396 	return (EINVAL);
2397 }
2398