ipmi: add PNP discovery (ACPI namespace via PNPACPI)
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / block / scsi_ioctl.c
blobe5b10017a50b121a9288d6d0354bfe9ebb15e499
1 /*
2 * Copyright (C) 2001 Jens Axboe <axboe@suse.de>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public Licens
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-
19 #include <linux/kernel.h>
20 #include <linux/errno.h>
21 #include <linux/string.h>
22 #include <linux/module.h>
23 #include <linux/blkdev.h>
24 #include <linux/capability.h>
25 #include <linux/completion.h>
26 #include <linux/cdrom.h>
27 #include <linux/slab.h>
28 #include <linux/times.h>
29 #include <asm/uaccess.h>
31 #include <scsi/scsi.h>
32 #include <scsi/scsi_ioctl.h>
33 #include <scsi/scsi_cmnd.h>
35 struct blk_cmd_filter {
36 unsigned long read_ok[BLK_SCSI_CMD_PER_LONG];
37 unsigned long write_ok[BLK_SCSI_CMD_PER_LONG];
38 } blk_default_cmd_filter;
40 /* Command group 3 is reserved and should never be used. */
41 const unsigned char scsi_command_size_tbl[8] =
43 6, 10, 10, 12,
44 16, 12, 10, 10
46 EXPORT_SYMBOL(scsi_command_size_tbl);
48 #include <scsi/sg.h>
50 static int sg_get_version(int __user *p)
52 static const int sg_version_num = 30527;
53 return put_user(sg_version_num, p);
56 static int scsi_get_idlun(struct request_queue *q, int __user *p)
58 return put_user(0, p);
61 static int scsi_get_bus(struct request_queue *q, int __user *p)
63 return put_user(0, p);
66 static int sg_get_timeout(struct request_queue *q)
68 return jiffies_to_clock_t(q->sg_timeout);
71 static int sg_set_timeout(struct request_queue *q, int __user *p)
73 int timeout, err = get_user(timeout, p);
75 if (!err)
76 q->sg_timeout = clock_t_to_jiffies(timeout);
78 return err;
81 static int sg_get_reserved_size(struct request_queue *q, int __user *p)
83 unsigned val = min(q->sg_reserved_size, queue_max_sectors(q) << 9);
85 return put_user(val, p);
88 static int sg_set_reserved_size(struct request_queue *q, int __user *p)
90 int size, err = get_user(size, p);
92 if (err)
93 return err;
95 if (size < 0)
96 return -EINVAL;
97 if (size > (queue_max_sectors(q) << 9))
98 size = queue_max_sectors(q) << 9;
100 q->sg_reserved_size = size;
101 return 0;
105 * will always return that we are ATAPI even for a real SCSI drive, I'm not
106 * so sure this is worth doing anything about (why would you care??)
108 static int sg_emulated_host(struct request_queue *q, int __user *p)
110 return put_user(1, p);
113 static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter)
115 /* Basic read-only commands */
116 __set_bit(TEST_UNIT_READY, filter->read_ok);
117 __set_bit(REQUEST_SENSE, filter->read_ok);
118 __set_bit(READ_6, filter->read_ok);
119 __set_bit(READ_10, filter->read_ok);
120 __set_bit(READ_12, filter->read_ok);
121 __set_bit(READ_16, filter->read_ok);
122 __set_bit(READ_BUFFER, filter->read_ok);
123 __set_bit(READ_DEFECT_DATA, filter->read_ok);
124 __set_bit(READ_CAPACITY, filter->read_ok);
125 __set_bit(READ_LONG, filter->read_ok);
126 __set_bit(INQUIRY, filter->read_ok);
127 __set_bit(MODE_SENSE, filter->read_ok);
128 __set_bit(MODE_SENSE_10, filter->read_ok);
129 __set_bit(LOG_SENSE, filter->read_ok);
130 __set_bit(START_STOP, filter->read_ok);
131 __set_bit(GPCMD_VERIFY_10, filter->read_ok);
132 __set_bit(VERIFY_16, filter->read_ok);
133 __set_bit(REPORT_LUNS, filter->read_ok);
134 __set_bit(SERVICE_ACTION_IN, filter->read_ok);
135 __set_bit(RECEIVE_DIAGNOSTIC, filter->read_ok);
136 __set_bit(MAINTENANCE_IN, filter->read_ok);
137 __set_bit(GPCMD_READ_BUFFER_CAPACITY, filter->read_ok);
139 /* Audio CD commands */
140 __set_bit(GPCMD_PLAY_CD, filter->read_ok);
141 __set_bit(GPCMD_PLAY_AUDIO_10, filter->read_ok);
142 __set_bit(GPCMD_PLAY_AUDIO_MSF, filter->read_ok);
143 __set_bit(GPCMD_PLAY_AUDIO_TI, filter->read_ok);
144 __set_bit(GPCMD_PAUSE_RESUME, filter->read_ok);
146 /* CD/DVD data reading */
147 __set_bit(GPCMD_READ_CD, filter->read_ok);
148 __set_bit(GPCMD_READ_CD_MSF, filter->read_ok);
149 __set_bit(GPCMD_READ_DISC_INFO, filter->read_ok);
150 __set_bit(GPCMD_READ_CDVD_CAPACITY, filter->read_ok);
151 __set_bit(GPCMD_READ_DVD_STRUCTURE, filter->read_ok);
152 __set_bit(GPCMD_READ_HEADER, filter->read_ok);
153 __set_bit(GPCMD_READ_TRACK_RZONE_INFO, filter->read_ok);
154 __set_bit(GPCMD_READ_SUBCHANNEL, filter->read_ok);
155 __set_bit(GPCMD_READ_TOC_PMA_ATIP, filter->read_ok);
156 __set_bit(GPCMD_REPORT_KEY, filter->read_ok);
157 __set_bit(GPCMD_SCAN, filter->read_ok);
158 __set_bit(GPCMD_GET_CONFIGURATION, filter->read_ok);
159 __set_bit(GPCMD_READ_FORMAT_CAPACITIES, filter->read_ok);
160 __set_bit(GPCMD_GET_EVENT_STATUS_NOTIFICATION, filter->read_ok);
161 __set_bit(GPCMD_GET_PERFORMANCE, filter->read_ok);
162 __set_bit(GPCMD_SEEK, filter->read_ok);
163 __set_bit(GPCMD_STOP_PLAY_SCAN, filter->read_ok);
165 /* Basic writing commands */
166 __set_bit(WRITE_6, filter->write_ok);
167 __set_bit(WRITE_10, filter->write_ok);
168 __set_bit(WRITE_VERIFY, filter->write_ok);
169 __set_bit(WRITE_12, filter->write_ok);
170 __set_bit(WRITE_VERIFY_12, filter->write_ok);
171 __set_bit(WRITE_16, filter->write_ok);
172 __set_bit(WRITE_LONG, filter->write_ok);
173 __set_bit(WRITE_LONG_2, filter->write_ok);
174 __set_bit(ERASE, filter->write_ok);
175 __set_bit(GPCMD_MODE_SELECT_10, filter->write_ok);
176 __set_bit(MODE_SELECT, filter->write_ok);
177 __set_bit(LOG_SELECT, filter->write_ok);
178 __set_bit(GPCMD_BLANK, filter->write_ok);
179 __set_bit(GPCMD_CLOSE_TRACK, filter->write_ok);
180 __set_bit(GPCMD_FLUSH_CACHE, filter->write_ok);
181 __set_bit(GPCMD_FORMAT_UNIT, filter->write_ok);
182 __set_bit(GPCMD_REPAIR_RZONE_TRACK, filter->write_ok);
183 __set_bit(GPCMD_RESERVE_RZONE_TRACK, filter->write_ok);
184 __set_bit(GPCMD_SEND_DVD_STRUCTURE, filter->write_ok);
185 __set_bit(GPCMD_SEND_EVENT, filter->write_ok);
186 __set_bit(GPCMD_SEND_KEY, filter->write_ok);
187 __set_bit(GPCMD_SEND_OPC, filter->write_ok);
188 __set_bit(GPCMD_SEND_CUE_SHEET, filter->write_ok);
189 __set_bit(GPCMD_SET_SPEED, filter->write_ok);
190 __set_bit(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL, filter->write_ok);
191 __set_bit(GPCMD_LOAD_UNLOAD, filter->write_ok);
192 __set_bit(GPCMD_SET_STREAMING, filter->write_ok);
193 __set_bit(GPCMD_SET_READ_AHEAD, filter->write_ok);
196 int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm)
198 struct blk_cmd_filter *filter = &blk_default_cmd_filter;
200 /* root can do any command. */
201 if (capable(CAP_SYS_RAWIO))
202 return 0;
204 /* if there's no filter set, assume we're filtering everything out */
205 if (!filter)
206 return -EPERM;
208 /* Anybody who can open the device can do a read-safe command */
209 if (test_bit(cmd[0], filter->read_ok))
210 return 0;
212 /* Write-safe commands require a writable open */
213 if (test_bit(cmd[0], filter->write_ok) && has_write_perm)
214 return 0;
216 return -EPERM;
218 EXPORT_SYMBOL(blk_verify_command);
220 static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
221 struct sg_io_hdr *hdr, fmode_t mode)
223 if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len))
224 return -EFAULT;
225 if (blk_verify_command(rq->cmd, mode & FMODE_WRITE))
226 return -EPERM;
229 * fill in request structure
231 rq->cmd_len = hdr->cmd_len;
232 rq->cmd_type = REQ_TYPE_BLOCK_PC;
234 rq->timeout = msecs_to_jiffies(hdr->timeout);
235 if (!rq->timeout)
236 rq->timeout = q->sg_timeout;
237 if (!rq->timeout)
238 rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
239 if (rq->timeout < BLK_MIN_SG_TIMEOUT)
240 rq->timeout = BLK_MIN_SG_TIMEOUT;
242 return 0;
245 static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,
246 struct bio *bio)
248 int r, ret = 0;
251 * fill in all the output members
253 hdr->status = rq->errors & 0xff;
254 hdr->masked_status = status_byte(rq->errors);
255 hdr->msg_status = msg_byte(rq->errors);
256 hdr->host_status = host_byte(rq->errors);
257 hdr->driver_status = driver_byte(rq->errors);
258 hdr->info = 0;
259 if (hdr->masked_status || hdr->host_status || hdr->driver_status)
260 hdr->info |= SG_INFO_CHECK;
261 hdr->resid = rq->resid_len;
262 hdr->sb_len_wr = 0;
264 if (rq->sense_len && hdr->sbp) {
265 int len = min((unsigned int) hdr->mx_sb_len, rq->sense_len);
267 if (!copy_to_user(hdr->sbp, rq->sense, len))
268 hdr->sb_len_wr = len;
269 else
270 ret = -EFAULT;
273 r = blk_rq_unmap_user(bio);
274 if (!ret)
275 ret = r;
276 blk_put_request(rq);
278 return ret;
281 static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
282 struct sg_io_hdr *hdr, fmode_t mode)
284 unsigned long start_time;
285 int writing = 0, ret = 0;
286 struct request *rq;
287 char sense[SCSI_SENSE_BUFFERSIZE];
288 struct bio *bio;
290 if (hdr->interface_id != 'S')
291 return -EINVAL;
292 if (hdr->cmd_len > BLK_MAX_CDB)
293 return -EINVAL;
295 if (hdr->dxfer_len > (queue_max_hw_sectors(q) << 9))
296 return -EIO;
298 if (hdr->dxfer_len)
299 switch (hdr->dxfer_direction) {
300 default:
301 return -EINVAL;
302 case SG_DXFER_TO_DEV:
303 writing = 1;
304 break;
305 case SG_DXFER_TO_FROM_DEV:
306 case SG_DXFER_FROM_DEV:
307 break;
310 rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL);
311 if (!rq)
312 return -ENOMEM;
314 if (blk_fill_sghdr_rq(q, rq, hdr, mode)) {
315 blk_put_request(rq);
316 return -EFAULT;
319 if (hdr->iovec_count) {
320 const int size = sizeof(struct sg_iovec) * hdr->iovec_count;
321 size_t iov_data_len;
322 struct sg_iovec *iov;
324 iov = kmalloc(size, GFP_KERNEL);
325 if (!iov) {
326 ret = -ENOMEM;
327 goto out;
330 if (copy_from_user(iov, hdr->dxferp, size)) {
331 kfree(iov);
332 ret = -EFAULT;
333 goto out;
336 /* SG_IO howto says that the shorter of the two wins */
337 iov_data_len = iov_length((struct iovec *)iov,
338 hdr->iovec_count);
339 if (hdr->dxfer_len < iov_data_len) {
340 hdr->iovec_count = iov_shorten((struct iovec *)iov,
341 hdr->iovec_count,
342 hdr->dxfer_len);
343 iov_data_len = hdr->dxfer_len;
346 ret = blk_rq_map_user_iov(q, rq, NULL, iov, hdr->iovec_count,
347 iov_data_len, GFP_KERNEL);
348 kfree(iov);
349 } else if (hdr->dxfer_len)
350 ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len,
351 GFP_KERNEL);
353 if (ret)
354 goto out;
356 bio = rq->bio;
357 memset(sense, 0, sizeof(sense));
358 rq->sense = sense;
359 rq->sense_len = 0;
360 rq->retries = 0;
362 start_time = jiffies;
364 /* ignore return value. All information is passed back to caller
365 * (if he doesn't check that is his problem).
366 * N.B. a non-zero SCSI status is _not_ necessarily an error.
368 blk_execute_rq(q, bd_disk, rq, 0);
370 hdr->duration = jiffies_to_msecs(jiffies - start_time);
372 return blk_complete_sghdr_rq(rq, hdr, bio);
373 out:
374 blk_put_request(rq);
375 return ret;
379 * sg_scsi_ioctl -- handle deprecated SCSI_IOCTL_SEND_COMMAND ioctl
380 * @file: file this ioctl operates on (optional)
381 * @q: request queue to send scsi commands down
382 * @disk: gendisk to operate on (option)
383 * @sic: userspace structure describing the command to perform
385 * Send down the scsi command described by @sic to the device below
386 * the request queue @q. If @file is non-NULL it's used to perform
387 * fine-grained permission checks that allow users to send down
388 * non-destructive SCSI commands. If the caller has a struct gendisk
389 * available it should be passed in as @disk to allow the low level
390 * driver to use the information contained in it. A non-NULL @disk
391 * is only allowed if the caller knows that the low level driver doesn't
392 * need it (e.g. in the scsi subsystem).
394 * Notes:
395 * - This interface is deprecated - users should use the SG_IO
396 * interface instead, as this is a more flexible approach to
397 * performing SCSI commands on a device.
398 * - The SCSI command length is determined by examining the 1st byte
399 * of the given command. There is no way to override this.
400 * - Data transfers are limited to PAGE_SIZE
401 * - The length (x + y) must be at least OMAX_SB_LEN bytes long to
402 * accommodate the sense buffer when an error occurs.
403 * The sense buffer is truncated to OMAX_SB_LEN (16) bytes so that
404 * old code will not be surprised.
405 * - If a Unix error occurs (e.g. ENOMEM) then the user will receive
406 * a negative return and the Unix error code in 'errno'.
407 * If the SCSI command succeeds then 0 is returned.
408 * Positive numbers returned are the compacted SCSI error codes (4
409 * bytes in one int) where the lowest byte is the SCSI status.
411 #define OMAX_SB_LEN 16 /* For backward compatibility */
412 int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
413 struct scsi_ioctl_command __user *sic)
415 struct request *rq;
416 int err;
417 unsigned int in_len, out_len, bytes, opcode, cmdlen;
418 char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
420 if (!sic)
421 return -EINVAL;
424 * get in an out lengths, verify they don't exceed a page worth of data
426 if (get_user(in_len, &sic->inlen))
427 return -EFAULT;
428 if (get_user(out_len, &sic->outlen))
429 return -EFAULT;
430 if (in_len > PAGE_SIZE || out_len > PAGE_SIZE)
431 return -EINVAL;
432 if (get_user(opcode, sic->data))
433 return -EFAULT;
435 bytes = max(in_len, out_len);
436 if (bytes) {
437 buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN);
438 if (!buffer)
439 return -ENOMEM;
443 rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT);
445 cmdlen = COMMAND_SIZE(opcode);
448 * get command and data to send to device, if any
450 err = -EFAULT;
451 rq->cmd_len = cmdlen;
452 if (copy_from_user(rq->cmd, sic->data, cmdlen))
453 goto error;
455 if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
456 goto error;
458 err = blk_verify_command(rq->cmd, mode & FMODE_WRITE);
459 if (err)
460 goto error;
462 /* default. possible overriden later */
463 rq->retries = 5;
465 switch (opcode) {
466 case SEND_DIAGNOSTIC:
467 case FORMAT_UNIT:
468 rq->timeout = FORMAT_UNIT_TIMEOUT;
469 rq->retries = 1;
470 break;
471 case START_STOP:
472 rq->timeout = START_STOP_TIMEOUT;
473 break;
474 case MOVE_MEDIUM:
475 rq->timeout = MOVE_MEDIUM_TIMEOUT;
476 break;
477 case READ_ELEMENT_STATUS:
478 rq->timeout = READ_ELEMENT_STATUS_TIMEOUT;
479 break;
480 case READ_DEFECT_DATA:
481 rq->timeout = READ_DEFECT_DATA_TIMEOUT;
482 rq->retries = 1;
483 break;
484 default:
485 rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
486 break;
489 if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, __GFP_WAIT)) {
490 err = DRIVER_ERROR << 24;
491 goto out;
494 memset(sense, 0, sizeof(sense));
495 rq->sense = sense;
496 rq->sense_len = 0;
497 rq->cmd_type = REQ_TYPE_BLOCK_PC;
499 blk_execute_rq(q, disk, rq, 0);
501 out:
502 err = rq->errors & 0xff; /* only 8 bit SCSI status */
503 if (err) {
504 if (rq->sense_len && rq->sense) {
505 bytes = (OMAX_SB_LEN > rq->sense_len) ?
506 rq->sense_len : OMAX_SB_LEN;
507 if (copy_to_user(sic->data, rq->sense, bytes))
508 err = -EFAULT;
510 } else {
511 if (copy_to_user(sic->data, buffer, out_len))
512 err = -EFAULT;
515 error:
516 kfree(buffer);
517 blk_put_request(rq);
518 return err;
520 EXPORT_SYMBOL_GPL(sg_scsi_ioctl);
522 /* Send basic block requests */
523 static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk,
524 int cmd, int data)
526 struct request *rq;
527 int err;
529 rq = blk_get_request(q, WRITE, __GFP_WAIT);
530 rq->cmd_type = REQ_TYPE_BLOCK_PC;
531 rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
532 rq->cmd[0] = cmd;
533 rq->cmd[4] = data;
534 rq->cmd_len = 6;
535 err = blk_execute_rq(q, bd_disk, rq, 0);
536 blk_put_request(rq);
538 return err;
541 static inline int blk_send_start_stop(struct request_queue *q,
542 struct gendisk *bd_disk, int data)
544 return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data);
547 int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mode,
548 unsigned int cmd, void __user *arg)
550 int err;
552 if (!q || blk_get_queue(q))
553 return -ENXIO;
555 switch (cmd) {
557 * new sgv3 interface
559 case SG_GET_VERSION_NUM:
560 err = sg_get_version(arg);
561 break;
562 case SCSI_IOCTL_GET_IDLUN:
563 err = scsi_get_idlun(q, arg);
564 break;
565 case SCSI_IOCTL_GET_BUS_NUMBER:
566 err = scsi_get_bus(q, arg);
567 break;
568 case SG_SET_TIMEOUT:
569 err = sg_set_timeout(q, arg);
570 break;
571 case SG_GET_TIMEOUT:
572 err = sg_get_timeout(q);
573 break;
574 case SG_GET_RESERVED_SIZE:
575 err = sg_get_reserved_size(q, arg);
576 break;
577 case SG_SET_RESERVED_SIZE:
578 err = sg_set_reserved_size(q, arg);
579 break;
580 case SG_EMULATED_HOST:
581 err = sg_emulated_host(q, arg);
582 break;
583 case SG_IO: {
584 struct sg_io_hdr hdr;
586 err = -EFAULT;
587 if (copy_from_user(&hdr, arg, sizeof(hdr)))
588 break;
589 err = sg_io(q, bd_disk, &hdr, mode);
590 if (err == -EFAULT)
591 break;
593 if (copy_to_user(arg, &hdr, sizeof(hdr)))
594 err = -EFAULT;
595 break;
597 case CDROM_SEND_PACKET: {
598 struct cdrom_generic_command cgc;
599 struct sg_io_hdr hdr;
601 err = -EFAULT;
602 if (copy_from_user(&cgc, arg, sizeof(cgc)))
603 break;
604 cgc.timeout = clock_t_to_jiffies(cgc.timeout);
605 memset(&hdr, 0, sizeof(hdr));
606 hdr.interface_id = 'S';
607 hdr.cmd_len = sizeof(cgc.cmd);
608 hdr.dxfer_len = cgc.buflen;
609 err = 0;
610 switch (cgc.data_direction) {
611 case CGC_DATA_UNKNOWN:
612 hdr.dxfer_direction = SG_DXFER_UNKNOWN;
613 break;
614 case CGC_DATA_WRITE:
615 hdr.dxfer_direction = SG_DXFER_TO_DEV;
616 break;
617 case CGC_DATA_READ:
618 hdr.dxfer_direction = SG_DXFER_FROM_DEV;
619 break;
620 case CGC_DATA_NONE:
621 hdr.dxfer_direction = SG_DXFER_NONE;
622 break;
623 default:
624 err = -EINVAL;
626 if (err)
627 break;
629 hdr.dxferp = cgc.buffer;
630 hdr.sbp = cgc.sense;
631 if (hdr.sbp)
632 hdr.mx_sb_len = sizeof(struct request_sense);
633 hdr.timeout = jiffies_to_msecs(cgc.timeout);
634 hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd;
635 hdr.cmd_len = sizeof(cgc.cmd);
637 err = sg_io(q, bd_disk, &hdr, mode);
638 if (err == -EFAULT)
639 break;
641 if (hdr.status)
642 err = -EIO;
644 cgc.stat = err;
645 cgc.buflen = hdr.resid;
646 if (copy_to_user(arg, &cgc, sizeof(cgc)))
647 err = -EFAULT;
649 break;
653 * old junk scsi send command ioctl
655 case SCSI_IOCTL_SEND_COMMAND:
656 printk(KERN_WARNING "program %s is using a deprecated SCSI ioctl, please convert it to SG_IO\n", current->comm);
657 err = -EINVAL;
658 if (!arg)
659 break;
661 err = sg_scsi_ioctl(q, bd_disk, mode, arg);
662 break;
663 case CDROMCLOSETRAY:
664 err = blk_send_start_stop(q, bd_disk, 0x03);
665 break;
666 case CDROMEJECT:
667 err = blk_send_start_stop(q, bd_disk, 0x02);
668 break;
669 default:
670 err = -ENOTTY;
673 blk_put_queue(q);
674 return err;
676 EXPORT_SYMBOL(scsi_cmd_ioctl);
678 int __init blk_scsi_ioctl_init(void)
680 blk_set_cmd_filter_defaults(&blk_default_cmd_filter);
681 return 0;
683 fs_initcall(blk_scsi_ioctl_init);