[SCSI] add support for variable length extended commands
[linux-2.6.git] / block / scsi_ioctl.c
1 /*
2  * Copyright (C) 2001 Jens Axboe <axboe@suse.de>
3  *
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.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  *
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
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-
17  *
18  */
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>
30
31 #include <scsi/scsi.h>
32 #include <scsi/scsi_ioctl.h>
33 #include <scsi/scsi_cmnd.h>
34
35 /* Command group 3 is reserved and should never be used.  */
36 const unsigned char scsi_command_size_tbl[8] =
37 {
38         6, 10, 10, 12,
39         16, 12, 10, 10
40 };
41 EXPORT_SYMBOL(scsi_command_size_tbl);
42
43 #include <scsi/sg.h>
44
45 static int sg_get_version(int __user *p)
46 {
47         static const int sg_version_num = 30527;
48         return put_user(sg_version_num, p);
49 }
50
51 static int scsi_get_idlun(struct request_queue *q, int __user *p)
52 {
53         return put_user(0, p);
54 }
55
56 static int scsi_get_bus(struct request_queue *q, int __user *p)
57 {
58         return put_user(0, p);
59 }
60
61 static int sg_get_timeout(struct request_queue *q)
62 {
63         return q->sg_timeout / (HZ / USER_HZ);
64 }
65
66 static int sg_set_timeout(struct request_queue *q, int __user *p)
67 {
68         int timeout, err = get_user(timeout, p);
69
70         if (!err)
71                 q->sg_timeout = timeout * (HZ / USER_HZ);
72
73         return err;
74 }
75
76 static int sg_get_reserved_size(struct request_queue *q, int __user *p)
77 {
78         unsigned val = min(q->sg_reserved_size, q->max_sectors << 9);
79
80         return put_user(val, p);
81 }
82
83 static int sg_set_reserved_size(struct request_queue *q, int __user *p)
84 {
85         int size, err = get_user(size, p);
86
87         if (err)
88                 return err;
89
90         if (size < 0)
91                 return -EINVAL;
92         if (size > (q->max_sectors << 9))
93                 size = q->max_sectors << 9;
94
95         q->sg_reserved_size = size;
96         return 0;
97 }
98
99 /*
100  * will always return that we are ATAPI even for a real SCSI drive, I'm not
101  * so sure this is worth doing anything about (why would you care??)
102  */
103 static int sg_emulated_host(struct request_queue *q, int __user *p)
104 {
105         return put_user(1, p);
106 }
107
108 #define CMD_READ_SAFE   0x01
109 #define CMD_WRITE_SAFE  0x02
110 #define CMD_WARNED      0x04
111 #define safe_for_read(cmd)      [cmd] = CMD_READ_SAFE
112 #define safe_for_write(cmd)     [cmd] = CMD_WRITE_SAFE
113
114 int blk_verify_command(unsigned char *cmd, int has_write_perm)
115 {
116         static unsigned char cmd_type[256] = {
117
118                 /* Basic read-only commands */
119                 safe_for_read(TEST_UNIT_READY),
120                 safe_for_read(REQUEST_SENSE),
121                 safe_for_read(READ_6),
122                 safe_for_read(READ_10),
123                 safe_for_read(READ_12),
124                 safe_for_read(READ_16),
125                 safe_for_read(READ_BUFFER),
126                 safe_for_read(READ_DEFECT_DATA),
127                 safe_for_read(READ_LONG),
128                 safe_for_read(INQUIRY),
129                 safe_for_read(MODE_SENSE),
130                 safe_for_read(MODE_SENSE_10),
131                 safe_for_read(LOG_SENSE),
132                 safe_for_read(START_STOP),
133                 safe_for_read(GPCMD_VERIFY_10),
134                 safe_for_read(VERIFY_16),
135
136                 /* Audio CD commands */
137                 safe_for_read(GPCMD_PLAY_CD),
138                 safe_for_read(GPCMD_PLAY_AUDIO_10),
139                 safe_for_read(GPCMD_PLAY_AUDIO_MSF),
140                 safe_for_read(GPCMD_PLAY_AUDIO_TI),
141                 safe_for_read(GPCMD_PAUSE_RESUME),
142
143                 /* CD/DVD data reading */
144                 safe_for_read(GPCMD_READ_BUFFER_CAPACITY),
145                 safe_for_read(GPCMD_READ_CD),
146                 safe_for_read(GPCMD_READ_CD_MSF),
147                 safe_for_read(GPCMD_READ_DISC_INFO),
148                 safe_for_read(GPCMD_READ_CDVD_CAPACITY),
149                 safe_for_read(GPCMD_READ_DVD_STRUCTURE),
150                 safe_for_read(GPCMD_READ_HEADER),
151                 safe_for_read(GPCMD_READ_TRACK_RZONE_INFO),
152                 safe_for_read(GPCMD_READ_SUBCHANNEL),
153                 safe_for_read(GPCMD_READ_TOC_PMA_ATIP),
154                 safe_for_read(GPCMD_REPORT_KEY),
155                 safe_for_read(GPCMD_SCAN),
156                 safe_for_read(GPCMD_GET_CONFIGURATION),
157                 safe_for_read(GPCMD_READ_FORMAT_CAPACITIES),
158                 safe_for_read(GPCMD_GET_EVENT_STATUS_NOTIFICATION),
159                 safe_for_read(GPCMD_GET_PERFORMANCE),
160                 safe_for_read(GPCMD_SEEK),
161                 safe_for_read(GPCMD_STOP_PLAY_SCAN),
162
163                 /* Basic writing commands */
164                 safe_for_write(WRITE_6),
165                 safe_for_write(WRITE_10),
166                 safe_for_write(WRITE_VERIFY),
167                 safe_for_write(WRITE_12),
168                 safe_for_write(WRITE_VERIFY_12),
169                 safe_for_write(WRITE_16),
170                 safe_for_write(WRITE_LONG),
171                 safe_for_write(WRITE_LONG_2),
172                 safe_for_write(ERASE),
173                 safe_for_write(GPCMD_MODE_SELECT_10),
174                 safe_for_write(MODE_SELECT),
175                 safe_for_write(LOG_SELECT),
176                 safe_for_write(GPCMD_BLANK),
177                 safe_for_write(GPCMD_CLOSE_TRACK),
178                 safe_for_write(GPCMD_FLUSH_CACHE),
179                 safe_for_write(GPCMD_FORMAT_UNIT),
180                 safe_for_write(GPCMD_REPAIR_RZONE_TRACK),
181                 safe_for_write(GPCMD_RESERVE_RZONE_TRACK),
182                 safe_for_write(GPCMD_SEND_DVD_STRUCTURE),
183                 safe_for_write(GPCMD_SEND_EVENT),
184                 safe_for_write(GPCMD_SEND_KEY),
185                 safe_for_write(GPCMD_SEND_OPC),
186                 safe_for_write(GPCMD_SEND_CUE_SHEET),
187                 safe_for_write(GPCMD_SET_SPEED),
188                 safe_for_write(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL),
189                 safe_for_write(GPCMD_LOAD_UNLOAD),
190                 safe_for_write(GPCMD_SET_STREAMING),
191         };
192         unsigned char type = cmd_type[cmd[0]];
193
194         /* Anybody who can open the device can do a read-safe command */
195         if (type & CMD_READ_SAFE)
196                 return 0;
197
198         /* Write-safe commands just require a writable open.. */
199         if ((type & CMD_WRITE_SAFE) && has_write_perm)
200                 return 0;
201
202         /* And root can do any command.. */
203         if (capable(CAP_SYS_RAWIO))
204                 return 0;
205
206         if (!type) {
207                 cmd_type[cmd[0]] = CMD_WARNED;
208                 printk(KERN_WARNING "scsi: unknown opcode 0x%02x\n", cmd[0]);
209         }
210
211         /* Otherwise fail it with an "Operation not permitted" */
212         return -EPERM;
213 }
214 EXPORT_SYMBOL_GPL(blk_verify_command);
215
216 static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
217                              struct sg_io_hdr *hdr, int has_write_perm)
218 {
219         memset(rq->cmd, 0, BLK_MAX_CDB); /* ATAPI hates garbage after CDB */
220
221         if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len))
222                 return -EFAULT;
223         if (blk_verify_command(rq->cmd, has_write_perm))
224                 return -EPERM;
225
226         /*
227          * fill in request structure
228          */
229         rq->cmd_len = hdr->cmd_len;
230         rq->cmd_type = REQ_TYPE_BLOCK_PC;
231
232         rq->timeout = msecs_to_jiffies(hdr->timeout);
233         if (!rq->timeout)
234                 rq->timeout = q->sg_timeout;
235         if (!rq->timeout)
236                 rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
237
238         return 0;
239 }
240
241 /*
242  * unmap a request that was previously mapped to this sg_io_hdr. handles
243  * both sg and non-sg sg_io_hdr.
244  */
245 static int blk_unmap_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr)
246 {
247         blk_rq_unmap_user(rq->bio);
248         blk_put_request(rq);
249         return 0;
250 }
251
252 static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,
253                                  struct bio *bio)
254 {
255         int r, ret = 0;
256
257         /*
258          * fill in all the output members
259          */
260         hdr->status = rq->errors & 0xff;
261         hdr->masked_status = status_byte(rq->errors);
262         hdr->msg_status = msg_byte(rq->errors);
263         hdr->host_status = host_byte(rq->errors);
264         hdr->driver_status = driver_byte(rq->errors);
265         hdr->info = 0;
266         if (hdr->masked_status || hdr->host_status || hdr->driver_status)
267                 hdr->info |= SG_INFO_CHECK;
268         hdr->resid = rq->data_len;
269         hdr->sb_len_wr = 0;
270
271         if (rq->sense_len && hdr->sbp) {
272                 int len = min((unsigned int) hdr->mx_sb_len, rq->sense_len);
273
274                 if (!copy_to_user(hdr->sbp, rq->sense, len))
275                         hdr->sb_len_wr = len;
276                 else
277                         ret = -EFAULT;
278         }
279
280         rq->bio = bio;
281         r = blk_unmap_sghdr_rq(rq, hdr);
282         if (ret)
283                 r = ret;
284
285         return r;
286 }
287
288 static int sg_io(struct file *file, struct request_queue *q,
289                 struct gendisk *bd_disk, struct sg_io_hdr *hdr)
290 {
291         unsigned long start_time;
292         int writing = 0, ret = 0, has_write_perm = 0;
293         struct request *rq;
294         char sense[SCSI_SENSE_BUFFERSIZE];
295         struct bio *bio;
296
297         if (hdr->interface_id != 'S')
298                 return -EINVAL;
299         if (hdr->cmd_len > BLK_MAX_CDB)
300                 return -EINVAL;
301
302         if (hdr->dxfer_len > (q->max_hw_sectors << 9))
303                 return -EIO;
304
305         if (hdr->dxfer_len)
306                 switch (hdr->dxfer_direction) {
307                 default:
308                         return -EINVAL;
309                 case SG_DXFER_TO_DEV:
310                         writing = 1;
311                         break;
312                 case SG_DXFER_TO_FROM_DEV:
313                 case SG_DXFER_FROM_DEV:
314                         break;
315                 }
316
317         rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL);
318         if (!rq)
319                 return -ENOMEM;
320
321         if (file)
322                 has_write_perm = file->f_mode & FMODE_WRITE;
323
324         if (blk_fill_sghdr_rq(q, rq, hdr, has_write_perm)) {
325                 blk_put_request(rq);
326                 return -EFAULT;
327         }
328
329         if (hdr->iovec_count) {
330                 const int size = sizeof(struct sg_iovec) * hdr->iovec_count;
331                 struct sg_iovec *iov;
332
333                 iov = kmalloc(size, GFP_KERNEL);
334                 if (!iov) {
335                         ret = -ENOMEM;
336                         goto out;
337                 }
338
339                 if (copy_from_user(iov, hdr->dxferp, size)) {
340                         kfree(iov);
341                         ret = -EFAULT;
342                         goto out;
343                 }
344
345                 ret = blk_rq_map_user_iov(q, rq, iov, hdr->iovec_count,
346                                           hdr->dxfer_len);
347                 kfree(iov);
348         } else if (hdr->dxfer_len)
349                 ret = blk_rq_map_user(q, rq, hdr->dxferp, hdr->dxfer_len);
350
351         if (ret)
352                 goto out;
353
354         bio = rq->bio;
355         memset(sense, 0, sizeof(sense));
356         rq->sense = sense;
357         rq->sense_len = 0;
358         rq->retries = 0;
359
360         start_time = jiffies;
361
362         /* ignore return value. All information is passed back to caller
363          * (if he doesn't check that is his problem).
364          * N.B. a non-zero SCSI status is _not_ necessarily an error.
365          */
366         blk_execute_rq(q, bd_disk, rq, 0);
367
368         hdr->duration = jiffies_to_msecs(jiffies - start_time);
369
370         return blk_complete_sghdr_rq(rq, hdr, bio);
371 out:
372         blk_put_request(rq);
373         return ret;
374 }
375
376 /**
377  * sg_scsi_ioctl  --  handle deprecated SCSI_IOCTL_SEND_COMMAND ioctl
378  * @file:       file this ioctl operates on (optional)
379  * @q:          request queue to send scsi commands down
380  * @disk:       gendisk to operate on (option)
381  * @sic:        userspace structure describing the command to perform
382  *
383  * Send down the scsi command described by @sic to the device below
384  * the request queue @q.  If @file is non-NULL it's used to perform
385  * fine-grained permission checks that allow users to send down
386  * non-destructive SCSI commands.  If the caller has a struct gendisk
387  * available it should be passed in as @disk to allow the low level
388  * driver to use the information contained in it.  A non-NULL @disk
389  * is only allowed if the caller knows that the low level driver doesn't
390  * need it (e.g. in the scsi subsystem).
391  *
392  * Notes:
393  *   -  This interface is deprecated - users should use the SG_IO
394  *      interface instead, as this is a more flexible approach to
395  *      performing SCSI commands on a device.
396  *   -  The SCSI command length is determined by examining the 1st byte
397  *      of the given command. There is no way to override this.
398  *   -  Data transfers are limited to PAGE_SIZE
399  *   -  The length (x + y) must be at least OMAX_SB_LEN bytes long to
400  *      accommodate the sense buffer when an error occurs.
401  *      The sense buffer is truncated to OMAX_SB_LEN (16) bytes so that
402  *      old code will not be surprised.
403  *   -  If a Unix error occurs (e.g. ENOMEM) then the user will receive
404  *      a negative return and the Unix error code in 'errno'.
405  *      If the SCSI command succeeds then 0 is returned.
406  *      Positive numbers returned are the compacted SCSI error codes (4
407  *      bytes in one int) where the lowest byte is the SCSI status.
408  */
409 #define OMAX_SB_LEN 16          /* For backward compatibility */
410 int sg_scsi_ioctl(struct file *file, struct request_queue *q,
411                   struct gendisk *disk, struct scsi_ioctl_command __user *sic)
412 {
413         struct request *rq;
414         int err;
415         unsigned int in_len, out_len, bytes, opcode, cmdlen;
416         char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
417
418         if (!sic)
419                 return -EINVAL;
420
421         /*
422          * get in an out lengths, verify they don't exceed a page worth of data
423          */
424         if (get_user(in_len, &sic->inlen))
425                 return -EFAULT;
426         if (get_user(out_len, &sic->outlen))
427                 return -EFAULT;
428         if (in_len > PAGE_SIZE || out_len > PAGE_SIZE)
429                 return -EINVAL;
430         if (get_user(opcode, sic->data))
431                 return -EFAULT;
432
433         bytes = max(in_len, out_len);
434         if (bytes) {
435                 buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN);
436                 if (!buffer)
437                         return -ENOMEM;
438
439         }
440
441         rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT);
442
443         cmdlen = COMMAND_SIZE(opcode);
444
445         /*
446          * get command and data to send to device, if any
447          */
448         err = -EFAULT;
449         rq->cmd_len = cmdlen;
450         if (copy_from_user(rq->cmd, sic->data, cmdlen))
451                 goto error;
452
453         if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
454                 goto error;
455
456         err = blk_verify_command(rq->cmd, file->f_mode & FMODE_WRITE);
457         if (err)
458                 goto error;
459
460         /* default.  possible overriden later */
461         rq->retries = 5;
462
463         switch (opcode) {
464         case SEND_DIAGNOSTIC:
465         case FORMAT_UNIT:
466                 rq->timeout = FORMAT_UNIT_TIMEOUT;
467                 rq->retries = 1;
468                 break;
469         case START_STOP:
470                 rq->timeout = START_STOP_TIMEOUT;
471                 break;
472         case MOVE_MEDIUM:
473                 rq->timeout = MOVE_MEDIUM_TIMEOUT;
474                 break;
475         case READ_ELEMENT_STATUS:
476                 rq->timeout = READ_ELEMENT_STATUS_TIMEOUT;
477                 break;
478         case READ_DEFECT_DATA:
479                 rq->timeout = READ_DEFECT_DATA_TIMEOUT;
480                 rq->retries = 1;
481                 break;
482         default:
483                 rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
484                 break;
485         }
486
487         if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, __GFP_WAIT)) {
488                 err = DRIVER_ERROR << 24;
489                 goto out;
490         }
491
492         memset(sense, 0, sizeof(sense));
493         rq->sense = sense;
494         rq->sense_len = 0;
495         rq->cmd_type = REQ_TYPE_BLOCK_PC;
496
497         blk_execute_rq(q, disk, rq, 0);
498
499 out:
500         err = rq->errors & 0xff;        /* only 8 bit SCSI status */
501         if (err) {
502                 if (rq->sense_len && rq->sense) {
503                         bytes = (OMAX_SB_LEN > rq->sense_len) ?
504                                 rq->sense_len : OMAX_SB_LEN;
505                         if (copy_to_user(sic->data, rq->sense, bytes))
506                                 err = -EFAULT;
507                 }
508         } else {
509                 if (copy_to_user(sic->data, buffer, out_len))
510                         err = -EFAULT;
511         }
512         
513 error:
514         kfree(buffer);
515         blk_put_request(rq);
516         return err;
517 }
518 EXPORT_SYMBOL_GPL(sg_scsi_ioctl);
519
520 /* Send basic block requests */
521 static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk,
522                               int cmd, int data)
523 {
524         struct request *rq;
525         int err;
526
527         rq = blk_get_request(q, WRITE, __GFP_WAIT);
528         rq->cmd_type = REQ_TYPE_BLOCK_PC;
529         rq->data = NULL;
530         rq->data_len = 0;
531         rq->extra_len = 0;
532         rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
533         memset(rq->cmd, 0, sizeof(rq->cmd));
534         rq->cmd[0] = cmd;
535         rq->cmd[4] = data;
536         rq->cmd_len = 6;
537         err = blk_execute_rq(q, bd_disk, rq, 0);
538         blk_put_request(rq);
539
540         return err;
541 }
542
543 static inline int blk_send_start_stop(struct request_queue *q,
544                                       struct gendisk *bd_disk, int data)
545 {
546         return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data);
547 }
548
549 int scsi_cmd_ioctl(struct file *file, struct request_queue *q,
550                    struct gendisk *bd_disk, unsigned int cmd, void __user *arg)
551 {
552         int err;
553
554         if (!q || blk_get_queue(q))
555                 return -ENXIO;
556
557         switch (cmd) {
558                 /*
559                  * new sgv3 interface
560                  */
561                 case SG_GET_VERSION_NUM:
562                         err = sg_get_version(arg);
563                         break;
564                 case SCSI_IOCTL_GET_IDLUN:
565                         err = scsi_get_idlun(q, arg);
566                         break;
567                 case SCSI_IOCTL_GET_BUS_NUMBER:
568                         err = scsi_get_bus(q, arg);
569                         break;
570                 case SG_SET_TIMEOUT:
571                         err = sg_set_timeout(q, arg);
572                         break;
573                 case SG_GET_TIMEOUT:
574                         err = sg_get_timeout(q);
575                         break;
576                 case SG_GET_RESERVED_SIZE:
577                         err = sg_get_reserved_size(q, arg);
578                         break;
579                 case SG_SET_RESERVED_SIZE:
580                         err = sg_set_reserved_size(q, arg);
581                         break;
582                 case SG_EMULATED_HOST:
583                         err = sg_emulated_host(q, arg);
584                         break;
585                 case SG_IO: {
586                         struct sg_io_hdr hdr;
587
588                         err = -EFAULT;
589                         if (copy_from_user(&hdr, arg, sizeof(hdr)))
590                                 break;
591                         err = sg_io(file, q, bd_disk, &hdr);
592                         if (err == -EFAULT)
593                                 break;
594
595                         if (copy_to_user(arg, &hdr, sizeof(hdr)))
596                                 err = -EFAULT;
597                         break;
598                 }
599                 case CDROM_SEND_PACKET: {
600                         struct cdrom_generic_command cgc;
601                         struct sg_io_hdr hdr;
602
603                         err = -EFAULT;
604                         if (copy_from_user(&cgc, arg, sizeof(cgc)))
605                                 break;
606                         cgc.timeout = clock_t_to_jiffies(cgc.timeout);
607                         memset(&hdr, 0, sizeof(hdr));
608                         hdr.interface_id = 'S';
609                         hdr.cmd_len = sizeof(cgc.cmd);
610                         hdr.dxfer_len = cgc.buflen;
611                         err = 0;
612                         switch (cgc.data_direction) {
613                                 case CGC_DATA_UNKNOWN:
614                                         hdr.dxfer_direction = SG_DXFER_UNKNOWN;
615                                         break;
616                                 case CGC_DATA_WRITE:
617                                         hdr.dxfer_direction = SG_DXFER_TO_DEV;
618                                         break;
619                                 case CGC_DATA_READ:
620                                         hdr.dxfer_direction = SG_DXFER_FROM_DEV;
621                                         break;
622                                 case CGC_DATA_NONE:
623                                         hdr.dxfer_direction = SG_DXFER_NONE;
624                                         break;
625                                 default:
626                                         err = -EINVAL;
627                         }
628                         if (err)
629                                 break;
630
631                         hdr.dxferp = cgc.buffer;
632                         hdr.sbp = cgc.sense;
633                         if (hdr.sbp)
634                                 hdr.mx_sb_len = sizeof(struct request_sense);
635                         hdr.timeout = cgc.timeout;
636                         hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd;
637                         hdr.cmd_len = sizeof(cgc.cmd);
638
639                         err = sg_io(file, q, bd_disk, &hdr);
640                         if (err == -EFAULT)
641                                 break;
642
643                         if (hdr.status)
644                                 err = -EIO;
645
646                         cgc.stat = err;
647                         cgc.buflen = hdr.resid;
648                         if (copy_to_user(arg, &cgc, sizeof(cgc)))
649                                 err = -EFAULT;
650
651                         break;
652                 }
653
654                 /*
655                  * old junk scsi send command ioctl
656                  */
657                 case SCSI_IOCTL_SEND_COMMAND:
658                         printk(KERN_WARNING "program %s is using a deprecated SCSI ioctl, please convert it to SG_IO\n", current->comm);
659                         err = -EINVAL;
660                         if (!arg)
661                                 break;
662
663                         err = sg_scsi_ioctl(file, q, bd_disk, arg);
664                         break;
665                 case CDROMCLOSETRAY:
666                         err = blk_send_start_stop(q, bd_disk, 0x03);
667                         break;
668                 case CDROMEJECT:
669                         err = blk_send_start_stop(q, bd_disk, 0x02);
670                         break;
671                 default:
672                         err = -ENOTTY;
673         }
674
675         blk_put_queue(q);
676         return err;
677 }
678
679 EXPORT_SYMBOL(scsi_cmd_ioctl);