1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
246
247#define REVISION "Revision: 3.20"
248#define VERSION "Id: cdrom.c 3.20 2003/12/17"
249
250
251
252#define CD_NOTHING 0x0
253#define CD_WARNING 0x1
254#define CD_REG_UNREG 0x2
255#define CD_DO_IOCTL 0x4
256#define CD_OPEN 0x8
257#define CD_CLOSE 0x10
258#define CD_COUNT_TRACKS 0x20
259#define CD_CHANGER 0x40
260#define CD_DVD 0x80
261
262
263
264#define ERRLOGMASK CD_WARNING
265
266
267
268#include <linux/atomic.h>
269#include <linux/module.h>
270#include <linux/fs.h>
271#include <linux/major.h>
272#include <linux/types.h>
273#include <linux/errno.h>
274#include <linux/kernel.h>
275#include <linux/mm.h>
276#include <linux/slab.h>
277#include <linux/cdrom.h>
278#include <linux/sysctl.h>
279#include <linux/proc_fs.h>
280#include <linux/blkpg.h>
281#include <linux/init.h>
282#include <linux/fcntl.h>
283#include <linux/blkdev.h>
284#include <linux/times.h>
285#include <linux/uaccess.h>
286#include <scsi/scsi_common.h>
287#include <scsi/scsi_request.h>
288
289
290static bool debug;
291
292static bool autoclose=1;
293static bool autoeject;
294static bool lockdoor = 1;
295
296static bool check_media_type;
297
298static bool mrw_format_restart = 1;
299module_param(debug, bool, 0);
300module_param(autoclose, bool, 0);
301module_param(autoeject, bool, 0);
302module_param(lockdoor, bool, 0);
303module_param(check_media_type, bool, 0);
304module_param(mrw_format_restart, bool, 0);
305
306static DEFINE_MUTEX(cdrom_mutex);
307
308static const char *mrw_format_status[] = {
309 "not mrw",
310 "bgformat inactive",
311 "bgformat active",
312 "mrw complete",
313};
314
315static const char *mrw_address_space[] = { "DMA", "GAA" };
316
317#if (ERRLOGMASK != CD_NOTHING)
318#define cd_dbg(type, fmt, ...) \
319do { \
320 if ((ERRLOGMASK & type) || debug == 1) \
321 pr_debug(fmt, ##__VA_ARGS__); \
322} while (0)
323#else
324#define cd_dbg(type, fmt, ...) \
325do { \
326 if (0 && (ERRLOGMASK & type) || debug == 1) \
327 pr_debug(fmt, ##__VA_ARGS__); \
328} while (0)
329#endif
330
331
332
333#define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
334
335
336
337
338
339#define CDROM_DEF_TIMEOUT (7 * HZ)
340
341
342
343static void cdrom_sysctl_register(void);
344
345static LIST_HEAD(cdrom_list);
346
347int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
348 struct packet_command *cgc)
349{
350 if (cgc->sshdr) {
351 cgc->sshdr->sense_key = 0x05;
352 cgc->sshdr->asc = 0x20;
353 cgc->sshdr->ascq = 0x00;
354 }
355
356 cgc->stat = -EIO;
357 return -EIO;
358}
359EXPORT_SYMBOL(cdrom_dummy_generic_packet);
360
361static int cdrom_flush_cache(struct cdrom_device_info *cdi)
362{
363 struct packet_command cgc;
364
365 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
366 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
367
368 cgc.timeout = 5 * 60 * HZ;
369
370 return cdi->ops->generic_packet(cdi, &cgc);
371}
372
373
374static int cdrom_get_disc_info(struct cdrom_device_info *cdi,
375 disc_information *di)
376{
377 const struct cdrom_device_ops *cdo = cdi->ops;
378 struct packet_command cgc;
379 int ret, buflen;
380
381
382 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
383 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
384 cgc.cmd[8] = cgc.buflen = 2;
385 cgc.quiet = 1;
386
387 ret = cdo->generic_packet(cdi, &cgc);
388 if (ret)
389 return ret;
390
391
392
393
394 buflen = be16_to_cpu(di->disc_information_length) +
395 sizeof(di->disc_information_length);
396
397 if (buflen > sizeof(disc_information))
398 buflen = sizeof(disc_information);
399
400 cgc.cmd[8] = cgc.buflen = buflen;
401 ret = cdo->generic_packet(cdi, &cgc);
402 if (ret)
403 return ret;
404
405
406 return buflen;
407}
408
409
410
411
412
413
414#define ENSURE(cdo, call, bits) \
415do { \
416 if (cdo->call == NULL) \
417 WARN_ON_ONCE((cdo)->capability & (bits)); \
418} while (0)
419
420
421
422
423
424static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
425{
426 struct packet_command cgc;
427 char buffer[16];
428
429 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
430
431 cgc.timeout = HZ;
432 cgc.quiet = 1;
433
434 if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
435 cdi->mrw_mode_page = MRW_MODE_PC;
436 return 0;
437 } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
438 cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
439 return 0;
440 }
441
442 return 1;
443}
444
445static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
446{
447 struct packet_command cgc;
448 struct mrw_feature_desc *mfd;
449 unsigned char buffer[16];
450 int ret;
451
452 *write = 0;
453
454 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
455
456 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
457 cgc.cmd[3] = CDF_MRW;
458 cgc.cmd[8] = sizeof(buffer);
459 cgc.quiet = 1;
460
461 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
462 return ret;
463
464 mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
465 if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
466 return 1;
467 *write = mfd->write;
468
469 if ((ret = cdrom_mrw_probe_pc(cdi))) {
470 *write = 0;
471 return ret;
472 }
473
474 return 0;
475}
476
477static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
478{
479 struct packet_command cgc;
480 unsigned char buffer[12];
481 int ret;
482
483 pr_info("%sstarting format\n", cont ? "Re" : "");
484
485
486
487
488 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
489 cgc.cmd[0] = GPCMD_FORMAT_UNIT;
490 cgc.cmd[1] = (1 << 4) | 1;
491
492 cgc.timeout = 5 * 60 * HZ;
493
494
495
496
497 buffer[1] = 1 << 1;
498 buffer[3] = 8;
499
500
501
502
503 buffer[4] = 0xff;
504 buffer[5] = 0xff;
505 buffer[6] = 0xff;
506 buffer[7] = 0xff;
507
508 buffer[8] = 0x24 << 2;
509 buffer[11] = cont;
510
511 ret = cdi->ops->generic_packet(cdi, &cgc);
512 if (ret)
513 pr_info("bgformat failed\n");
514
515 return ret;
516}
517
518static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
519{
520 struct packet_command cgc;
521
522 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
523 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
524
525
526
527
528 cgc.cmd[1] = !!immed;
529 cgc.cmd[2] = 1 << 1;
530
531 cgc.timeout = 5 * 60 * HZ;
532
533 return cdi->ops->generic_packet(cdi, &cgc);
534}
535
536static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
537{
538 disc_information di;
539 int ret;
540
541 ret = cdrom_get_disc_info(cdi, &di);
542 if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
543 return 1;
544
545 ret = 0;
546 if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
547 pr_info("issuing MRW background format suspend\n");
548 ret = cdrom_mrw_bgformat_susp(cdi, 0);
549 }
550
551 if (!ret && cdi->media_written)
552 ret = cdrom_flush_cache(cdi);
553
554 return ret;
555}
556
557static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
558{
559 struct packet_command cgc;
560 struct mode_page_header *mph;
561 char buffer[16];
562 int ret, offset, size;
563
564 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
565
566 cgc.buffer = buffer;
567 cgc.buflen = sizeof(buffer);
568
569 ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0);
570 if (ret)
571 return ret;
572
573 mph = (struct mode_page_header *)buffer;
574 offset = be16_to_cpu(mph->desc_length);
575 size = be16_to_cpu(mph->mode_data_length) + 2;
576
577 buffer[offset + 3] = space;
578 cgc.buflen = size;
579
580 ret = cdrom_mode_select(cdi, &cgc);
581 if (ret)
582 return ret;
583
584 pr_info("%s: mrw address space %s selected\n",
585 cdi->name, mrw_address_space[space]);
586 return 0;
587}
588
589int register_cdrom(struct gendisk *disk, struct cdrom_device_info *cdi)
590{
591 static char banner_printed;
592 const struct cdrom_device_ops *cdo = cdi->ops;
593
594 cd_dbg(CD_OPEN, "entering register_cdrom\n");
595
596 if (cdo->open == NULL || cdo->release == NULL)
597 return -EINVAL;
598 if (!banner_printed) {
599 pr_info("Uniform CD-ROM driver " REVISION "\n");
600 banner_printed = 1;
601 cdrom_sysctl_register();
602 }
603
604 cdi->disk = disk;
605 disk->cdi = cdi;
606
607 ENSURE(cdo, drive_status, CDC_DRIVE_STATUS);
608 if (cdo->check_events == NULL)
609 WARN_ON_ONCE(cdo->capability & (CDC_MEDIA_CHANGED | CDC_SELECT_DISC));
610 ENSURE(cdo, tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
611 ENSURE(cdo, lock_door, CDC_LOCK);
612 ENSURE(cdo, select_speed, CDC_SELECT_SPEED);
613 ENSURE(cdo, get_last_session, CDC_MULTI_SESSION);
614 ENSURE(cdo, get_mcn, CDC_MCN);
615 ENSURE(cdo, reset, CDC_RESET);
616 ENSURE(cdo, generic_packet, CDC_GENERIC_PACKET);
617 cdi->mc_flags = 0;
618 cdi->options = CDO_USE_FFLAGS;
619
620 if (autoclose == 1 && CDROM_CAN(CDC_CLOSE_TRAY))
621 cdi->options |= (int) CDO_AUTO_CLOSE;
622 if (autoeject == 1 && CDROM_CAN(CDC_OPEN_TRAY))
623 cdi->options |= (int) CDO_AUTO_EJECT;
624 if (lockdoor == 1)
625 cdi->options |= (int) CDO_LOCK;
626 if (check_media_type == 1)
627 cdi->options |= (int) CDO_CHECK_TYPE;
628
629 if (CDROM_CAN(CDC_MRW_W))
630 cdi->exit = cdrom_mrw_exit;
631
632 if (cdi->ops->read_cdda_bpc)
633 cdi->cdda_method = CDDA_BPC_FULL;
634 else
635 cdi->cdda_method = CDDA_OLD;
636
637 WARN_ON(!cdo->generic_packet);
638
639 cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
640 mutex_lock(&cdrom_mutex);
641 list_add(&cdi->list, &cdrom_list);
642 mutex_unlock(&cdrom_mutex);
643 return 0;
644}
645#undef ENSURE
646
647void unregister_cdrom(struct cdrom_device_info *cdi)
648{
649 cd_dbg(CD_OPEN, "entering unregister_cdrom\n");
650
651 mutex_lock(&cdrom_mutex);
652 list_del(&cdi->list);
653 mutex_unlock(&cdrom_mutex);
654
655 if (cdi->exit)
656 cdi->exit(cdi);
657
658 cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
659}
660
661int cdrom_get_media_event(struct cdrom_device_info *cdi,
662 struct media_event_desc *med)
663{
664 struct packet_command cgc;
665 unsigned char buffer[8];
666 struct event_header *eh = (struct event_header *)buffer;
667
668 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
669 cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
670 cgc.cmd[1] = 1;
671 cgc.cmd[4] = 1 << 4;
672 cgc.cmd[8] = sizeof(buffer);
673 cgc.quiet = 1;
674
675 if (cdi->ops->generic_packet(cdi, &cgc))
676 return 1;
677
678 if (be16_to_cpu(eh->data_len) < sizeof(*med))
679 return 1;
680
681 if (eh->nea || eh->notification_class != 0x4)
682 return 1;
683
684 memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
685 return 0;
686}
687
688static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
689 struct rwrt_feature_desc *rfd)
690{
691 struct packet_command cgc;
692 char buffer[24];
693 int ret;
694
695 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
696
697 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
698 cgc.cmd[3] = CDF_RWRT;
699 cgc.cmd[8] = sizeof(buffer);
700 cgc.quiet = 1;
701
702 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
703 return ret;
704
705 memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
706 return 0;
707}
708
709static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
710{
711 struct packet_command cgc;
712 char buffer[16];
713 __be16 *feature_code;
714 int ret;
715
716 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
717
718 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
719 cgc.cmd[3] = CDF_HWDM;
720 cgc.cmd[8] = sizeof(buffer);
721 cgc.quiet = 1;
722
723 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
724 return ret;
725
726 feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
727 if (be16_to_cpu(*feature_code) == CDF_HWDM)
728 return 0;
729
730 return 1;
731}
732
733
734static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
735{
736 struct rwrt_feature_desc rfd;
737 int ret;
738
739 *write = 0;
740
741 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
742 return ret;
743
744 if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
745 *write = 1;
746
747 return 0;
748}
749
750static int cdrom_media_erasable(struct cdrom_device_info *cdi)
751{
752 disc_information di;
753 int ret;
754
755 ret = cdrom_get_disc_info(cdi, &di);
756 if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
757 return -1;
758
759 return di.erasable;
760}
761
762
763
764
765static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
766{
767 int ret = cdrom_media_erasable(cdi);
768
769
770
771
772
773 if (!ret)
774 return 1;
775
776 return 0;
777}
778
779static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
780{
781 disc_information di;
782 int ret;
783
784
785
786
787 if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
788 pr_err("failed setting lba address space\n");
789 return 1;
790 }
791
792 ret = cdrom_get_disc_info(cdi, &di);
793 if (ret < 0 || ret < offsetof(typeof(di),disc_type))
794 return 1;
795
796 if (!di.erasable)
797 return 1;
798
799
800
801
802
803
804
805
806 ret = 0;
807 pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]);
808 if (!di.mrw_status)
809 ret = 1;
810 else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
811 mrw_format_restart)
812 ret = cdrom_mrw_bgformat(cdi, 1);
813
814 return ret;
815}
816
817static int mo_open_write(struct cdrom_device_info *cdi)
818{
819 struct packet_command cgc;
820 char buffer[255];
821 int ret;
822
823 init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
824 cgc.quiet = 1;
825
826
827
828
829
830
831 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
832 if (ret)
833 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
834 if (ret) {
835 cgc.buflen = 255;
836 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
837 }
838
839
840 if (ret)
841 return 0;
842
843 return buffer[3] & 0x80;
844}
845
846static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
847{
848 struct rwrt_feature_desc rfd;
849 int ret;
850
851 if ((ret = cdrom_has_defect_mgt(cdi)))
852 return ret;
853
854 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
855 return ret;
856 else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
857 ret = !rfd.curr;
858
859 cd_dbg(CD_OPEN, "can open for random write\n");
860 return ret;
861}
862
863static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
864{
865 struct packet_command cgc;
866 char buffer[32];
867 int ret, mmc3_profile;
868
869 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
870
871 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
872 cgc.cmd[1] = 0;
873 cgc.cmd[2] = cgc.cmd[3] = 0;
874 cgc.cmd[8] = sizeof(buffer);
875 cgc.quiet = 1;
876
877 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
878 mmc3_profile = 0xffff;
879 else
880 mmc3_profile = (buffer[6] << 8) | buffer[7];
881
882 cdi->mmc3_profile = mmc3_profile;
883}
884
885static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
886{
887 switch (cdi->mmc3_profile) {
888 case 0x12:
889 case 0x1A:
890 case 0x43:
891 return 0;
892 default:
893 return 1;
894 }
895}
896
897
898
899
900static int cdrom_open_write(struct cdrom_device_info *cdi)
901{
902 int mrw, mrw_write, ram_write;
903 int ret = 1;
904
905 mrw = 0;
906 if (!cdrom_is_mrw(cdi, &mrw_write))
907 mrw = 1;
908
909 if (CDROM_CAN(CDC_MO_DRIVE))
910 ram_write = 1;
911 else
912 (void) cdrom_is_random_writable(cdi, &ram_write);
913
914 if (mrw)
915 cdi->mask &= ~CDC_MRW;
916 else
917 cdi->mask |= CDC_MRW;
918
919 if (mrw_write)
920 cdi->mask &= ~CDC_MRW_W;
921 else
922 cdi->mask |= CDC_MRW_W;
923
924 if (ram_write)
925 cdi->mask &= ~CDC_RAM;
926 else
927 cdi->mask |= CDC_RAM;
928
929 if (CDROM_CAN(CDC_MRW_W))
930 ret = cdrom_mrw_open_write(cdi);
931 else if (CDROM_CAN(CDC_DVD_RAM))
932 ret = cdrom_dvdram_open_write(cdi);
933 else if (CDROM_CAN(CDC_RAM) &&
934 !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
935 ret = cdrom_ram_open_write(cdi);
936 else if (CDROM_CAN(CDC_MO_DRIVE))
937 ret = mo_open_write(cdi);
938 else if (!cdrom_is_dvd_rw(cdi))
939 ret = 0;
940
941 return ret;
942}
943
944static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
945{
946 struct packet_command cgc;
947
948 if (cdi->mmc3_profile != 0x1a) {
949 cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
950 return;
951 }
952
953 if (!cdi->media_written) {
954 cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
955 return;
956 }
957
958 pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name);
959
960 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
961 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
962 cgc.timeout = 30*HZ;
963 cdi->ops->generic_packet(cdi, &cgc);
964
965 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
966 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
967 cgc.timeout = 3000*HZ;
968 cgc.quiet = 1;
969 cdi->ops->generic_packet(cdi, &cgc);
970
971 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
972 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
973 cgc.cmd[2] = 2;
974 cgc.quiet = 1;
975 cgc.timeout = 3000*HZ;
976 cdi->ops->generic_packet(cdi, &cgc);
977
978 cdi->media_written = 0;
979}
980
981static int cdrom_close_write(struct cdrom_device_info *cdi)
982{
983#if 0
984 return cdrom_flush_cache(cdi);
985#else
986 return 0;
987#endif
988}
989
990
991static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks)
992{
993 struct cdrom_tochdr header;
994 struct cdrom_tocentry entry;
995 int ret, i;
996 tracks->data = 0;
997 tracks->audio = 0;
998 tracks->cdi = 0;
999 tracks->xa = 0;
1000 tracks->error = 0;
1001 cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
1002
1003 if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
1004 tracks->error = CDS_NO_INFO;
1005 return;
1006 }
1007
1008
1009 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
1010 if (ret) {
1011 if (ret == -ENOMEDIUM)
1012 tracks->error = CDS_NO_DISC;
1013 else
1014 tracks->error = CDS_NO_INFO;
1015 return;
1016 }
1017
1018 entry.cdte_format = CDROM_MSF;
1019 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1020 entry.cdte_track = i;
1021 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1022 tracks->error = CDS_NO_INFO;
1023 return;
1024 }
1025 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1026 if (entry.cdte_format == 0x10)
1027 tracks->cdi++;
1028 else if (entry.cdte_format == 0x20)
1029 tracks->xa++;
1030 else
1031 tracks->data++;
1032 } else {
1033 tracks->audio++;
1034 }
1035 cd_dbg(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1036 i, entry.cdte_format, entry.cdte_ctrl);
1037 }
1038 cd_dbg(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1039 header.cdth_trk1, tracks->audio, tracks->data,
1040 tracks->cdi, tracks->xa);
1041}
1042
1043static
1044int open_for_data(struct cdrom_device_info *cdi)
1045{
1046 int ret;
1047 const struct cdrom_device_ops *cdo = cdi->ops;
1048 tracktype tracks;
1049 cd_dbg(CD_OPEN, "entering open_for_data\n");
1050
1051
1052 if (cdo->drive_status != NULL) {
1053 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1054 cd_dbg(CD_OPEN, "drive_status=%d\n", ret);
1055 if (ret == CDS_TRAY_OPEN) {
1056 cd_dbg(CD_OPEN, "the tray is open...\n");
1057
1058 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1059 cdi->options & CDO_AUTO_CLOSE) {
1060 cd_dbg(CD_OPEN, "trying to close the tray\n");
1061 ret=cdo->tray_move(cdi,0);
1062 if (ret) {
1063 cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n");
1064
1065
1066
1067
1068
1069 ret=-ENOMEDIUM;
1070 goto clean_up_and_return;
1071 }
1072 } else {
1073 cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n");
1074 ret=-ENOMEDIUM;
1075 goto clean_up_and_return;
1076 }
1077
1078 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1079 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1080 cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
1081 cd_dbg(CD_OPEN, "tray might not contain a medium\n");
1082 ret=-ENOMEDIUM;
1083 goto clean_up_and_return;
1084 }
1085 cd_dbg(CD_OPEN, "the tray is now closed\n");
1086 }
1087
1088 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1089 if (ret!=CDS_DISC_OK) {
1090 ret = -ENOMEDIUM;
1091 goto clean_up_and_return;
1092 }
1093 }
1094 cdrom_count_tracks(cdi, &tracks);
1095 if (tracks.error == CDS_NO_DISC) {
1096 cd_dbg(CD_OPEN, "bummer. no disc.\n");
1097 ret=-ENOMEDIUM;
1098 goto clean_up_and_return;
1099 }
1100
1101
1102 if (tracks.data==0) {
1103 if (cdi->options & CDO_CHECK_TYPE) {
1104
1105
1106 cd_dbg(CD_OPEN, "bummer. wrong media type.\n");
1107 cd_dbg(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
1108 (unsigned int)task_pid_nr(current));
1109 ret=-EMEDIUMTYPE;
1110 goto clean_up_and_return;
1111 }
1112 else {
1113 cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n");
1114 }
1115 }
1116
1117 cd_dbg(CD_OPEN, "all seems well, opening the devicen");
1118
1119
1120 ret = cdo->open(cdi, 0);
1121 cd_dbg(CD_OPEN, "opening the device gave me %d\n", ret);
1122
1123
1124
1125 if (ret) {
1126 cd_dbg(CD_OPEN, "open device failed\n");
1127 goto clean_up_and_return;
1128 }
1129 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
1130 cdo->lock_door(cdi, 1);
1131 cd_dbg(CD_OPEN, "door locked\n");
1132 }
1133 cd_dbg(CD_OPEN, "device opened successfully\n");
1134 return ret;
1135
1136
1137
1138
1139
1140
1141clean_up_and_return:
1142 cd_dbg(CD_OPEN, "open failed\n");
1143 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1144 cdo->lock_door(cdi, 0);
1145 cd_dbg(CD_OPEN, "door unlocked\n");
1146 }
1147 return ret;
1148}
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev,
1159 fmode_t mode)
1160{
1161 int ret;
1162
1163 cd_dbg(CD_OPEN, "entering cdrom_open\n");
1164
1165
1166
1167 cdi->use_count++;
1168 if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) {
1169 ret = cdi->ops->open(cdi, 1);
1170 } else {
1171 ret = open_for_data(cdi);
1172 if (ret)
1173 goto err;
1174 if (CDROM_CAN(CDC_GENERIC_PACKET))
1175 cdrom_mmc3_profile(cdi);
1176 if (mode & FMODE_WRITE) {
1177 ret = -EROFS;
1178 if (cdrom_open_write(cdi))
1179 goto err_release;
1180 if (!CDROM_CAN(CDC_RAM))
1181 goto err_release;
1182 ret = 0;
1183 cdi->media_written = 0;
1184 }
1185 }
1186
1187 if (ret)
1188 goto err;
1189
1190 cd_dbg(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
1191 cdi->name, cdi->use_count);
1192 return 0;
1193err_release:
1194 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1195 cdi->ops->lock_door(cdi, 0);
1196 cd_dbg(CD_OPEN, "door unlocked\n");
1197 }
1198 cdi->ops->release(cdi);
1199err:
1200 cdi->use_count--;
1201 return ret;
1202}
1203
1204
1205
1206
1207static int check_for_audio_disc(struct cdrom_device_info *cdi,
1208 const struct cdrom_device_ops *cdo)
1209{
1210 int ret;
1211 tracktype tracks;
1212 cd_dbg(CD_OPEN, "entering check_for_audio_disc\n");
1213 if (!(cdi->options & CDO_CHECK_TYPE))
1214 return 0;
1215 if (cdo->drive_status != NULL) {
1216 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1217 cd_dbg(CD_OPEN, "drive_status=%d\n", ret);
1218 if (ret == CDS_TRAY_OPEN) {
1219 cd_dbg(CD_OPEN, "the tray is open...\n");
1220
1221 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1222 cdi->options & CDO_AUTO_CLOSE) {
1223 cd_dbg(CD_OPEN, "trying to close the tray\n");
1224 ret=cdo->tray_move(cdi,0);
1225 if (ret) {
1226 cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n");
1227
1228
1229
1230
1231
1232 return -ENOMEDIUM;
1233 }
1234 } else {
1235 cd_dbg(CD_OPEN, "bummer. this driver can't close the tray.\n");
1236 return -ENOMEDIUM;
1237 }
1238
1239 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1240 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1241 cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
1242 return -ENOMEDIUM;
1243 }
1244 if (ret!=CDS_DISC_OK) {
1245 cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n");
1246 return -EIO;
1247 }
1248 cd_dbg(CD_OPEN, "the tray is now closed\n");
1249 }
1250 }
1251 cdrom_count_tracks(cdi, &tracks);
1252 if (tracks.error)
1253 return(tracks.error);
1254
1255 if (tracks.audio==0)
1256 return -EMEDIUMTYPE;
1257
1258 return 0;
1259}
1260
1261void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
1262{
1263 const struct cdrom_device_ops *cdo = cdi->ops;
1264 int opened_for_data;
1265
1266 cd_dbg(CD_CLOSE, "entering cdrom_release\n");
1267
1268 if (cdi->use_count > 0)
1269 cdi->use_count--;
1270
1271 if (cdi->use_count == 0) {
1272 cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n",
1273 cdi->name);
1274 cdrom_dvd_rw_close_write(cdi);
1275
1276 if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) {
1277 cd_dbg(CD_CLOSE, "Unlocking door!\n");
1278 cdo->lock_door(cdi, 0);
1279 }
1280 }
1281
1282 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
1283 !(mode & FMODE_NDELAY);
1284
1285
1286
1287
1288 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
1289 cdrom_close_write(cdi);
1290
1291 cdo->release(cdi);
1292 if (cdi->use_count == 0) {
1293 if (opened_for_data &&
1294 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
1295 cdo->tray_move(cdi, 1);
1296 }
1297}
1298
1299static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1300 struct cdrom_changer_info *buf)
1301{
1302 struct packet_command cgc;
1303 const struct cdrom_device_ops *cdo = cdi->ops;
1304 int length;
1305
1306
1307
1308
1309
1310
1311 if (cdi->sanyo_slot) {
1312 buf->hdr.nslots = 3;
1313 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1314 for (length = 0; length < 3; length++) {
1315 buf->slots[length].disc_present = 1;
1316 buf->slots[length].change = 0;
1317 }
1318 return 0;
1319 }
1320
1321 length = sizeof(struct cdrom_mechstat_header) +
1322 cdi->capacity * sizeof(struct cdrom_slot);
1323
1324 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1325 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1326 cgc.cmd[8] = (length >> 8) & 0xff;
1327 cgc.cmd[9] = length & 0xff;
1328 return cdo->generic_packet(cdi, &cgc);
1329}
1330
1331static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1332{
1333 struct cdrom_changer_info *info;
1334 int ret;
1335
1336 cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n");
1337 if (cdi->sanyo_slot)
1338 return CDS_NO_INFO;
1339
1340 info = kmalloc(sizeof(*info), GFP_KERNEL);
1341 if (!info)
1342 return -ENOMEM;
1343
1344 if ((ret = cdrom_read_mech_status(cdi, info)))
1345 goto out_free;
1346
1347 if (info->slots[slot].disc_present)
1348 ret = CDS_DISC_OK;
1349 else
1350 ret = CDS_NO_DISC;
1351
1352out_free:
1353 kfree(info);
1354 return ret;
1355}
1356
1357
1358
1359
1360int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1361{
1362 int status;
1363 int nslots = 1;
1364 struct cdrom_changer_info *info;
1365
1366 cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1367
1368 cdi->capacity = 0;
1369
1370 info = kmalloc(sizeof(*info), GFP_KERNEL);
1371 if (!info)
1372 return -ENOMEM;
1373
1374 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1375 nslots = info->hdr.nslots;
1376
1377 kfree(info);
1378 return nslots;
1379}
1380
1381
1382
1383static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1384{
1385 struct packet_command cgc;
1386
1387 cd_dbg(CD_CHANGER, "entering cdrom_load_unload()\n");
1388 if (cdi->sanyo_slot && slot < 0)
1389 return 0;
1390
1391 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1392 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1393 cgc.cmd[4] = 2 + (slot >= 0);
1394 cgc.cmd[8] = slot;
1395 cgc.timeout = 60 * HZ;
1396
1397
1398
1399
1400 if (cdi->sanyo_slot && -1 < slot) {
1401 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1402 cgc.cmd[7] = slot;
1403 cgc.cmd[4] = cgc.cmd[8] = 0;
1404 cdi->sanyo_slot = slot ? slot : 3;
1405 }
1406
1407 return cdi->ops->generic_packet(cdi, &cgc);
1408}
1409
1410static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1411{
1412 struct cdrom_changer_info *info;
1413 int curslot;
1414 int ret;
1415
1416 cd_dbg(CD_CHANGER, "entering cdrom_select_disc()\n");
1417 if (!CDROM_CAN(CDC_SELECT_DISC))
1418 return -EDRIVE_CANT_DO_THIS;
1419
1420 if (cdi->ops->check_events)
1421 cdi->ops->check_events(cdi, 0, slot);
1422
1423 if (slot == CDSL_NONE) {
1424
1425 cdi->mc_flags = 0x3;
1426 return cdrom_load_unload(cdi, -1);
1427 }
1428
1429 info = kmalloc(sizeof(*info), GFP_KERNEL);
1430 if (!info)
1431 return -ENOMEM;
1432
1433 if ((ret = cdrom_read_mech_status(cdi, info))) {
1434 kfree(info);
1435 return ret;
1436 }
1437
1438 curslot = info->hdr.curslot;
1439 kfree(info);
1440
1441 if (cdi->use_count > 1 || cdi->keeplocked) {
1442 if (slot == CDSL_CURRENT) {
1443 return curslot;
1444 } else {
1445 return -EBUSY;
1446 }
1447 }
1448
1449
1450
1451
1452
1453
1454 if (slot == CDSL_CURRENT)
1455 slot = curslot;
1456
1457
1458 cdi->mc_flags = 0x3;
1459 if ((ret = cdrom_load_unload(cdi, slot)))
1460 return ret;
1461
1462 return slot;
1463}
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479static void cdrom_update_events(struct cdrom_device_info *cdi,
1480 unsigned int clearing)
1481{
1482 unsigned int events;
1483
1484 events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT);
1485 cdi->vfs_events |= events;
1486 cdi->ioctl_events |= events;
1487}
1488
1489unsigned int cdrom_check_events(struct cdrom_device_info *cdi,
1490 unsigned int clearing)
1491{
1492 unsigned int events;
1493
1494 cdrom_update_events(cdi, clearing);
1495 events = cdi->vfs_events;
1496 cdi->vfs_events = 0;
1497 return events;
1498}
1499EXPORT_SYMBOL(cdrom_check_events);
1500
1501
1502
1503
1504
1505
1506
1507static
1508int media_changed(struct cdrom_device_info *cdi, int queue)
1509{
1510 unsigned int mask = (1 << (queue & 1));
1511 int ret = !!(cdi->mc_flags & mask);
1512 bool changed;
1513
1514 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1515 return ret;
1516
1517
1518 BUG_ON(!queue);
1519 cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE);
1520 changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE;
1521 cdi->ioctl_events = 0;
1522
1523 if (changed) {
1524 cdi->mc_flags = 0x3;
1525 ret |= 1;
1526 cdi->media_written = 0;
1527 }
1528
1529 cdi->mc_flags &= ~mask;
1530 return ret;
1531}
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549static
1550void sanitize_format(union cdrom_addr *addr,
1551 u_char * curr, u_char requested)
1552{
1553 if (*curr == requested)
1554 return;
1555 if (requested == CDROM_LBA) {
1556 addr->lba = (int) addr->msf.frame +
1557 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1558 } else {
1559 int lba = addr->lba;
1560 addr->msf.frame = lba % 75;
1561 lba /= 75;
1562 lba += 2;
1563 addr->msf.second = lba % 60;
1564 addr->msf.minute = lba / 60;
1565 }
1566 *curr = requested;
1567}
1568
1569void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1570 int type)
1571{
1572 memset(cgc, 0, sizeof(struct packet_command));
1573 if (buf)
1574 memset(buf, 0, len);
1575 cgc->buffer = (char *) buf;
1576 cgc->buflen = len;
1577 cgc->data_direction = type;
1578 cgc->timeout = CDROM_DEF_TIMEOUT;
1579}
1580
1581
1582
1583#define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1584#define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1585
1586static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1587{
1588 cgc->cmd[0] = GPCMD_REPORT_KEY;
1589 cgc->cmd[10] = type | (agid << 6);
1590 switch (type) {
1591 case 0: case 8: case 5: {
1592 cgc->buflen = 8;
1593 break;
1594 }
1595 case 1: {
1596 cgc->buflen = 16;
1597 break;
1598 }
1599 case 2: case 4: {
1600 cgc->buflen = 12;
1601 break;
1602 }
1603 }
1604 cgc->cmd[9] = cgc->buflen;
1605 cgc->data_direction = CGC_DATA_READ;
1606}
1607
1608static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1609{
1610 cgc->cmd[0] = GPCMD_SEND_KEY;
1611 cgc->cmd[10] = type | (agid << 6);
1612 switch (type) {
1613 case 1: {
1614 cgc->buflen = 16;
1615 break;
1616 }
1617 case 3: {
1618 cgc->buflen = 12;
1619 break;
1620 }
1621 case 6: {
1622 cgc->buflen = 8;
1623 break;
1624 }
1625 }
1626 cgc->cmd[9] = cgc->buflen;
1627 cgc->data_direction = CGC_DATA_WRITE;
1628}
1629
1630static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1631{
1632 int ret;
1633 u_char buf[20];
1634 struct packet_command cgc;
1635 const struct cdrom_device_ops *cdo = cdi->ops;
1636 rpc_state_t rpc_state;
1637
1638 memset(buf, 0, sizeof(buf));
1639 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1640
1641 switch (ai->type) {
1642
1643 case DVD_LU_SEND_AGID:
1644 cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1645 cgc.quiet = 1;
1646 setup_report_key(&cgc, ai->lsa.agid, 0);
1647
1648 if ((ret = cdo->generic_packet(cdi, &cgc)))
1649 return ret;
1650
1651 ai->lsa.agid = buf[7] >> 6;
1652
1653 break;
1654
1655 case DVD_LU_SEND_KEY1:
1656 cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1657 setup_report_key(&cgc, ai->lsk.agid, 2);
1658
1659 if ((ret = cdo->generic_packet(cdi, &cgc)))
1660 return ret;
1661
1662 copy_key(ai->lsk.key, &buf[4]);
1663
1664 break;
1665
1666 case DVD_LU_SEND_CHALLENGE:
1667 cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1668 setup_report_key(&cgc, ai->lsc.agid, 1);
1669
1670 if ((ret = cdo->generic_packet(cdi, &cgc)))
1671 return ret;
1672
1673 copy_chal(ai->lsc.chal, &buf[4]);
1674
1675 break;
1676
1677
1678 case DVD_LU_SEND_TITLE_KEY:
1679 cd_dbg(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1680 cgc.quiet = 1;
1681 setup_report_key(&cgc, ai->lstk.agid, 4);
1682 cgc.cmd[5] = ai->lstk.lba;
1683 cgc.cmd[4] = ai->lstk.lba >> 8;
1684 cgc.cmd[3] = ai->lstk.lba >> 16;
1685 cgc.cmd[2] = ai->lstk.lba >> 24;
1686
1687 if ((ret = cdo->generic_packet(cdi, &cgc)))
1688 return ret;
1689
1690 ai->lstk.cpm = (buf[4] >> 7) & 1;
1691 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1692 ai->lstk.cgms = (buf[4] >> 4) & 3;
1693 copy_key(ai->lstk.title_key, &buf[5]);
1694
1695 break;
1696
1697 case DVD_LU_SEND_ASF:
1698 cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1699 setup_report_key(&cgc, ai->lsasf.agid, 5);
1700
1701 if ((ret = cdo->generic_packet(cdi, &cgc)))
1702 return ret;
1703
1704 ai->lsasf.asf = buf[7] & 1;
1705 break;
1706
1707
1708 case DVD_HOST_SEND_CHALLENGE:
1709 cd_dbg(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1710 setup_send_key(&cgc, ai->hsc.agid, 1);
1711 buf[1] = 0xe;
1712 copy_chal(&buf[4], ai->hsc.chal);
1713
1714 if ((ret = cdo->generic_packet(cdi, &cgc)))
1715 return ret;
1716
1717 ai->type = DVD_LU_SEND_KEY1;
1718 break;
1719
1720 case DVD_HOST_SEND_KEY2:
1721 cd_dbg(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1722 setup_send_key(&cgc, ai->hsk.agid, 3);
1723 buf[1] = 0xa;
1724 copy_key(&buf[4], ai->hsk.key);
1725
1726 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1727 ai->type = DVD_AUTH_FAILURE;
1728 return ret;
1729 }
1730 ai->type = DVD_AUTH_ESTABLISHED;
1731 break;
1732
1733
1734 case DVD_INVALIDATE_AGID:
1735 cgc.quiet = 1;
1736 cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1737 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1738 if ((ret = cdo->generic_packet(cdi, &cgc)))
1739 return ret;
1740 break;
1741
1742
1743 case DVD_LU_SEND_RPC_STATE:
1744 cd_dbg(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1745 setup_report_key(&cgc, 0, 8);
1746 memset(&rpc_state, 0, sizeof(rpc_state_t));
1747 cgc.buffer = (char *) &rpc_state;
1748
1749 if ((ret = cdo->generic_packet(cdi, &cgc)))
1750 return ret;
1751
1752 ai->lrpcs.type = rpc_state.type_code;
1753 ai->lrpcs.vra = rpc_state.vra;
1754 ai->lrpcs.ucca = rpc_state.ucca;
1755 ai->lrpcs.region_mask = rpc_state.region_mask;
1756 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1757 break;
1758
1759
1760 case DVD_HOST_SEND_RPC_STATE:
1761 cd_dbg(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1762 setup_send_key(&cgc, 0, 6);
1763 buf[1] = 6;
1764 buf[4] = ai->hrpcs.pdrc;
1765
1766 if ((ret = cdo->generic_packet(cdi, &cgc)))
1767 return ret;
1768 break;
1769
1770 default:
1771 cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1772 return -ENOTTY;
1773 }
1774
1775 return 0;
1776}
1777
1778static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s,
1779 struct packet_command *cgc)
1780{
1781 unsigned char buf[21], *base;
1782 struct dvd_layer *layer;
1783 const struct cdrom_device_ops *cdo = cdi->ops;
1784 int ret, layer_num = s->physical.layer_num;
1785
1786 if (layer_num >= DVD_LAYERS)
1787 return -EINVAL;
1788
1789 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
1790 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1791 cgc->cmd[6] = layer_num;
1792 cgc->cmd[7] = s->type;
1793 cgc->cmd[9] = cgc->buflen & 0xff;
1794
1795
1796
1797
1798 cgc->quiet = 1;
1799
1800 ret = cdo->generic_packet(cdi, cgc);
1801 if (ret)
1802 return ret;
1803
1804 base = &buf[4];
1805 layer = &s->physical.layer[layer_num];
1806
1807
1808
1809
1810
1811 memset(layer, 0, sizeof(*layer));
1812 layer->book_version = base[0] & 0xf;
1813 layer->book_type = base[0] >> 4;
1814 layer->min_rate = base[1] & 0xf;
1815 layer->disc_size = base[1] >> 4;
1816 layer->layer_type = base[2] & 0xf;
1817 layer->track_path = (base[2] >> 4) & 1;
1818 layer->nlayers = (base[2] >> 5) & 3;
1819 layer->track_density = base[3] & 0xf;
1820 layer->linear_density = base[3] >> 4;
1821 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1822 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1823 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1824 layer->bca = base[16] >> 7;
1825
1826 return 0;
1827}
1828
1829static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s,
1830 struct packet_command *cgc)
1831{
1832 int ret;
1833 u_char buf[8];
1834 const struct cdrom_device_ops *cdo = cdi->ops;
1835
1836 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
1837 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1838 cgc->cmd[6] = s->copyright.layer_num;
1839 cgc->cmd[7] = s->type;
1840 cgc->cmd[8] = cgc->buflen >> 8;
1841 cgc->cmd[9] = cgc->buflen & 0xff;
1842
1843 ret = cdo->generic_packet(cdi, cgc);
1844 if (ret)
1845 return ret;
1846
1847 s->copyright.cpst = buf[4];
1848 s->copyright.rmi = buf[5];
1849
1850 return 0;
1851}
1852
1853static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s,
1854 struct packet_command *cgc)
1855{
1856 int ret, size;
1857 u_char *buf;
1858 const struct cdrom_device_ops *cdo = cdi->ops;
1859
1860 size = sizeof(s->disckey.value) + 4;
1861
1862 buf = kmalloc(size, GFP_KERNEL);
1863 if (!buf)
1864 return -ENOMEM;
1865
1866 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1867 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1868 cgc->cmd[7] = s->type;
1869 cgc->cmd[8] = size >> 8;
1870 cgc->cmd[9] = size & 0xff;
1871 cgc->cmd[10] = s->disckey.agid << 6;
1872
1873 ret = cdo->generic_packet(cdi, cgc);
1874 if (!ret)
1875 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1876
1877 kfree(buf);
1878 return ret;
1879}
1880
1881static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s,
1882 struct packet_command *cgc)
1883{
1884 int ret, size = 4 + 188;
1885 u_char *buf;
1886 const struct cdrom_device_ops *cdo = cdi->ops;
1887
1888 buf = kmalloc(size, GFP_KERNEL);
1889 if (!buf)
1890 return -ENOMEM;
1891
1892 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1893 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1894 cgc->cmd[7] = s->type;
1895 cgc->cmd[9] = cgc->buflen & 0xff;
1896
1897 ret = cdo->generic_packet(cdi, cgc);
1898 if (ret)
1899 goto out;
1900
1901 s->bca.len = buf[0] << 8 | buf[1];
1902 if (s->bca.len < 12 || s->bca.len > 188) {
1903 cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n",
1904 s->bca.len);
1905 ret = -EIO;
1906 goto out;
1907 }
1908 memcpy(s->bca.value, &buf[4], s->bca.len);
1909 ret = 0;
1910out:
1911 kfree(buf);
1912 return ret;
1913}
1914
1915static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s,
1916 struct packet_command *cgc)
1917{
1918 int ret = 0, size;
1919 u_char *buf;
1920 const struct cdrom_device_ops *cdo = cdi->ops;
1921
1922 size = sizeof(s->manufact.value) + 4;
1923
1924 buf = kmalloc(size, GFP_KERNEL);
1925 if (!buf)
1926 return -ENOMEM;
1927
1928 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1929 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1930 cgc->cmd[7] = s->type;
1931 cgc->cmd[8] = size >> 8;
1932 cgc->cmd[9] = size & 0xff;
1933
1934 ret = cdo->generic_packet(cdi, cgc);
1935 if (ret)
1936 goto out;
1937
1938 s->manufact.len = buf[0] << 8 | buf[1];
1939 if (s->manufact.len < 0) {
1940 cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n",
1941 s->manufact.len);
1942 ret = -EIO;
1943 } else {
1944 if (s->manufact.len > 2048) {
1945 cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d): truncating to 2048\n",
1946 s->manufact.len);
1947 s->manufact.len = 2048;
1948 }
1949 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1950 }
1951
1952out:
1953 kfree(buf);
1954 return ret;
1955}
1956
1957static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s,
1958 struct packet_command *cgc)
1959{
1960 switch (s->type) {
1961 case DVD_STRUCT_PHYSICAL:
1962 return dvd_read_physical(cdi, s, cgc);
1963
1964 case DVD_STRUCT_COPYRIGHT:
1965 return dvd_read_copyright(cdi, s, cgc);
1966
1967 case DVD_STRUCT_DISCKEY:
1968 return dvd_read_disckey(cdi, s, cgc);
1969
1970 case DVD_STRUCT_BCA:
1971 return dvd_read_bca(cdi, s, cgc);
1972
1973 case DVD_STRUCT_MANUFACT:
1974 return dvd_read_manufact(cdi, s, cgc);
1975
1976 default:
1977 cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1978 s->type);
1979 return -EINVAL;
1980 }
1981}
1982
1983int cdrom_mode_sense(struct cdrom_device_info *cdi,
1984 struct packet_command *cgc,
1985 int page_code, int page_control)
1986{
1987 const struct cdrom_device_ops *cdo = cdi->ops;
1988
1989 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1990
1991 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1992 cgc->cmd[2] = page_code | (page_control << 6);
1993 cgc->cmd[7] = cgc->buflen >> 8;
1994 cgc->cmd[8] = cgc->buflen & 0xff;
1995 cgc->data_direction = CGC_DATA_READ;
1996 return cdo->generic_packet(cdi, cgc);
1997}
1998
1999int cdrom_mode_select(struct cdrom_device_info *cdi,
2000 struct packet_command *cgc)
2001{
2002 const struct cdrom_device_ops *cdo = cdi->ops;
2003
2004 memset(cgc->cmd, 0, sizeof(cgc->cmd));
2005 memset(cgc->buffer, 0, 2);
2006 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
2007 cgc->cmd[1] = 0x10;
2008 cgc->cmd[7] = cgc->buflen >> 8;
2009 cgc->cmd[8] = cgc->buflen & 0xff;
2010 cgc->data_direction = CGC_DATA_WRITE;
2011 return cdo->generic_packet(cdi, cgc);
2012}
2013
2014static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
2015 struct cdrom_subchnl *subchnl, int mcn)
2016{
2017 const struct cdrom_device_ops *cdo = cdi->ops;
2018 struct packet_command cgc;
2019 char buffer[32];
2020 int ret;
2021
2022 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
2023 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
2024 cgc.cmd[1] = subchnl->cdsc_format;
2025 cgc.cmd[2] = 0x40;
2026 cgc.cmd[3] = mcn ? 2 : 1;
2027 cgc.cmd[8] = 16;
2028
2029 if ((ret = cdo->generic_packet(cdi, &cgc)))
2030 return ret;
2031
2032 subchnl->cdsc_audiostatus = cgc.buffer[1];
2033 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
2034 subchnl->cdsc_trk = cgc.buffer[6];
2035 subchnl->cdsc_ind = cgc.buffer[7];
2036
2037 if (subchnl->cdsc_format == CDROM_LBA) {
2038 subchnl->cdsc_absaddr.lba = ((cgc.buffer[8] << 24) |
2039 (cgc.buffer[9] << 16) |
2040 (cgc.buffer[10] << 8) |
2041 (cgc.buffer[11]));
2042 subchnl->cdsc_reladdr.lba = ((cgc.buffer[12] << 24) |
2043 (cgc.buffer[13] << 16) |
2044 (cgc.buffer[14] << 8) |
2045 (cgc.buffer[15]));
2046 } else {
2047 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
2048 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
2049 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
2050 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
2051 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
2052 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
2053 }
2054
2055 return 0;
2056}
2057
2058
2059
2060
2061static int cdrom_read_cd(struct cdrom_device_info *cdi,
2062 struct packet_command *cgc, int lba,
2063 int blocksize, int nblocks)
2064{
2065 const struct cdrom_device_ops *cdo = cdi->ops;
2066
2067 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2068 cgc->cmd[0] = GPCMD_READ_10;
2069 cgc->cmd[2] = (lba >> 24) & 0xff;
2070 cgc->cmd[3] = (lba >> 16) & 0xff;
2071 cgc->cmd[4] = (lba >> 8) & 0xff;
2072 cgc->cmd[5] = lba & 0xff;
2073 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2074 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2075 cgc->cmd[8] = nblocks & 0xff;
2076 cgc->buflen = blocksize * nblocks;
2077 return cdo->generic_packet(cdi, cgc);
2078}
2079
2080
2081static int cdrom_read_block(struct cdrom_device_info *cdi,
2082 struct packet_command *cgc,
2083 int lba, int nblocks, int format, int blksize)
2084{
2085 const struct cdrom_device_ops *cdo = cdi->ops;
2086
2087 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2088 cgc->cmd[0] = GPCMD_READ_CD;
2089
2090 cgc->cmd[1] = format << 2;
2091
2092 cgc->cmd[2] = (lba >> 24) & 0xff;
2093 cgc->cmd[3] = (lba >> 16) & 0xff;
2094 cgc->cmd[4] = (lba >> 8) & 0xff;
2095 cgc->cmd[5] = lba & 0xff;
2096
2097 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2098 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2099 cgc->cmd[8] = nblocks & 0xff;
2100 cgc->buflen = blksize * nblocks;
2101
2102
2103 switch (blksize) {
2104 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2105 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2106 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2107 default : cgc->cmd[9] = 0x10;
2108 }
2109
2110 return cdo->generic_packet(cdi, cgc);
2111}
2112
2113static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2114 int lba, int nframes)
2115{
2116 struct packet_command cgc;
2117 int ret = 0;
2118 int nr;
2119
2120 cdi->last_sense = 0;
2121
2122 memset(&cgc, 0, sizeof(cgc));
2123
2124
2125
2126
2127 nr = nframes;
2128 do {
2129 cgc.buffer = kmalloc_array(nr, CD_FRAMESIZE_RAW, GFP_KERNEL);
2130 if (cgc.buffer)
2131 break;
2132
2133 nr >>= 1;
2134 } while (nr);
2135
2136 if (!nr)
2137 return -ENOMEM;
2138
2139 cgc.data_direction = CGC_DATA_READ;
2140 while (nframes > 0) {
2141 if (nr > nframes)
2142 nr = nframes;
2143
2144 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2145 if (ret)
2146 break;
2147 if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2148 ret = -EFAULT;
2149 break;
2150 }
2151 ubuf += CD_FRAMESIZE_RAW * nr;
2152 nframes -= nr;
2153 lba += nr;
2154 }
2155 kfree(cgc.buffer);
2156 return ret;
2157}
2158
2159static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2160 int lba, int nframes)
2161{
2162 int max_frames = (queue_max_sectors(cdi->disk->queue) << 9) /
2163 CD_FRAMESIZE_RAW;
2164 int nr, ret = 0;
2165
2166 cdi->last_sense = 0;
2167
2168 while (nframes) {
2169 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2170 nr = 1;
2171 else
2172 nr = min(nframes, max_frames);
2173
2174 ret = cdi->ops->read_cdda_bpc(cdi, ubuf, lba, nr,
2175 &cdi->last_sense);
2176 if (ret)
2177 break;
2178
2179 nframes -= nr;
2180 lba += nr;
2181 ubuf += (nr * CD_FRAMESIZE_RAW);
2182 }
2183
2184 return ret;
2185}
2186
2187static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2188 int lba, int nframes)
2189{
2190 int ret;
2191
2192 if (cdi->cdda_method == CDDA_OLD)
2193 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2194
2195retry:
2196
2197
2198
2199 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2200 if (!ret || ret != -EIO)
2201 return ret;
2202
2203
2204
2205
2206
2207 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2208 pr_info("dropping to single frame dma\n");
2209 cdi->cdda_method = CDDA_BPC_SINGLE;
2210 goto retry;
2211 }
2212
2213
2214
2215
2216
2217
2218 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2219 return ret;
2220
2221 pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2222 cdi->cdda_method = CDDA_OLD;
2223 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2224}
2225
2226int cdrom_multisession(struct cdrom_device_info *cdi,
2227 struct cdrom_multisession *info)
2228{
2229 u8 requested_format;
2230 int ret;
2231
2232 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2233 return -ENOSYS;
2234
2235 requested_format = info->addr_format;
2236 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2237 return -EINVAL;
2238 info->addr_format = CDROM_LBA;
2239
2240 ret = cdi->ops->get_last_session(cdi, info);
2241 if (!ret)
2242 sanitize_format(&info->addr, &info->addr_format,
2243 requested_format);
2244 return ret;
2245}
2246EXPORT_SYMBOL_GPL(cdrom_multisession);
2247
2248static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2249 void __user *argp)
2250{
2251 struct cdrom_multisession info;
2252 int ret;
2253
2254 cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2255
2256 if (copy_from_user(&info, argp, sizeof(info)))
2257 return -EFAULT;
2258 ret = cdrom_multisession(cdi, &info);
2259 if (ret)
2260 return ret;
2261 if (copy_to_user(argp, &info, sizeof(info)))
2262 return -EFAULT;
2263
2264 cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2265 return ret;
2266}
2267
2268static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2269{
2270 cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n");
2271
2272 if (!CDROM_CAN(CDC_OPEN_TRAY))
2273 return -ENOSYS;
2274 if (cdi->use_count != 1 || cdi->keeplocked)
2275 return -EBUSY;
2276 if (CDROM_CAN(CDC_LOCK)) {
2277 int ret = cdi->ops->lock_door(cdi, 0);
2278 if (ret)
2279 return ret;
2280 }
2281
2282 return cdi->ops->tray_move(cdi, 1);
2283}
2284
2285static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2286{
2287 cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2288
2289 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2290 return -ENOSYS;
2291 return cdi->ops->tray_move(cdi, 0);
2292}
2293
2294static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2295 unsigned long arg)
2296{
2297 cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2298
2299 if (!CDROM_CAN(CDC_OPEN_TRAY))
2300 return -ENOSYS;
2301 if (cdi->keeplocked)
2302 return -EBUSY;
2303
2304 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2305 if (arg)
2306 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2307 return 0;
2308}
2309
2310static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2311 unsigned long arg)
2312{
2313 struct cdrom_changer_info *info;
2314 int ret;
2315
2316 cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2317
2318 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2319 return -ENOSYS;
2320
2321
2322 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2323 return media_changed(cdi, 1);
2324
2325 if (arg >= cdi->capacity)
2326 return -EINVAL;
2327
2328 info = kmalloc(sizeof(*info), GFP_KERNEL);
2329 if (!info)
2330 return -ENOMEM;
2331
2332 ret = cdrom_read_mech_status(cdi, info);
2333 if (!ret)
2334 ret = info->slots[arg].change;
2335 kfree(info);
2336 return ret;
2337}
2338
2339static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2340 unsigned long arg)
2341{
2342 cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2343
2344
2345
2346
2347
2348 switch (arg) {
2349 case CDO_USE_FFLAGS:
2350 case CDO_CHECK_TYPE:
2351 break;
2352 case CDO_LOCK:
2353 if (!CDROM_CAN(CDC_LOCK))
2354 return -ENOSYS;
2355 break;
2356 case 0:
2357 return cdi->options;
2358
2359 default:
2360 if (!CDROM_CAN(arg))
2361 return -ENOSYS;
2362 }
2363 cdi->options |= (int) arg;
2364 return cdi->options;
2365}
2366
2367static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2368 unsigned long arg)
2369{
2370 cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2371
2372 cdi->options &= ~(int) arg;
2373 return cdi->options;
2374}
2375
2376static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2377 unsigned long arg)
2378{
2379 cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2380
2381 if (!CDROM_CAN(CDC_SELECT_SPEED))
2382 return -ENOSYS;
2383 return cdi->ops->select_speed(cdi, arg);
2384}
2385
2386static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2387 unsigned long arg)
2388{
2389 cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2390
2391 if (!CDROM_CAN(CDC_SELECT_DISC))
2392 return -ENOSYS;
2393
2394 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2395 if (arg >= cdi->capacity)
2396 return -EINVAL;
2397 }
2398
2399
2400
2401
2402
2403
2404 if (cdi->ops->select_disc)
2405 return cdi->ops->select_disc(cdi, arg);
2406
2407 cd_dbg(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2408 return cdrom_select_disc(cdi, arg);
2409}
2410
2411static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2412 struct block_device *bdev)
2413{
2414 cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n");
2415
2416 if (!capable(CAP_SYS_ADMIN))
2417 return -EACCES;
2418 if (!CDROM_CAN(CDC_RESET))
2419 return -ENOSYS;
2420 invalidate_bdev(bdev);
2421 return cdi->ops->reset(cdi);
2422}
2423
2424static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2425 unsigned long arg)
2426{
2427 cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl");
2428
2429 if (!CDROM_CAN(CDC_LOCK))
2430 return -EDRIVE_CANT_DO_THIS;
2431
2432 cdi->keeplocked = arg ? 1 : 0;
2433
2434
2435
2436
2437
2438 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2439 return -EBUSY;
2440 return cdi->ops->lock_door(cdi, arg);
2441}
2442
2443static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2444 unsigned long arg)
2445{
2446 cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis");
2447
2448 if (!capable(CAP_SYS_ADMIN))
2449 return -EACCES;
2450 debug = arg ? 1 : 0;
2451 return debug;
2452}
2453
2454static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2455{
2456 cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2457 return (cdi->ops->capability & ~cdi->mask);
2458}
2459
2460
2461
2462
2463
2464
2465
2466static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2467 void __user *argp)
2468{
2469 struct cdrom_mcn mcn;
2470 int ret;
2471
2472 cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2473
2474 if (!(cdi->ops->capability & CDC_MCN))
2475 return -ENOSYS;
2476 ret = cdi->ops->get_mcn(cdi, &mcn);
2477 if (ret)
2478 return ret;
2479
2480 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2481 return -EFAULT;
2482 cd_dbg(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2483 return 0;
2484}
2485
2486static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2487 unsigned long arg)
2488{
2489 cd_dbg(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2490
2491 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2492 return -ENOSYS;
2493 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2494 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2495 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2496 if (arg >= cdi->capacity)
2497 return -EINVAL;
2498 return cdrom_slot_status(cdi, arg);
2499}
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2519{
2520 tracktype tracks;
2521
2522 cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2523
2524 cdrom_count_tracks(cdi, &tracks);
2525 if (tracks.error)
2526 return tracks.error;
2527
2528
2529 if (tracks.audio > 0) {
2530 if (!tracks.data && !tracks.cdi && !tracks.xa)
2531 return CDS_AUDIO;
2532 else
2533 return CDS_MIXED;
2534 }
2535
2536 if (tracks.cdi > 0)
2537 return CDS_XA_2_2;
2538 if (tracks.xa > 0)
2539 return CDS_XA_2_1;
2540 if (tracks.data > 0)
2541 return CDS_DATA_1;
2542
2543
2544 cd_dbg(CD_WARNING, "This disc doesn't have any tracks I recognize!\n");
2545 return CDS_NO_INFO;
2546}
2547
2548static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2549{
2550 cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2551 return cdi->capacity;
2552}
2553
2554static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2555 void __user *argp)
2556{
2557 struct cdrom_subchnl q;
2558 u8 requested, back;
2559 int ret;
2560
2561
2562
2563 if (copy_from_user(&q, argp, sizeof(q)))
2564 return -EFAULT;
2565
2566 requested = q.cdsc_format;
2567 if (requested != CDROM_MSF && requested != CDROM_LBA)
2568 return -EINVAL;
2569 q.cdsc_format = CDROM_MSF;
2570
2571 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2572 if (ret)
2573 return ret;
2574
2575 back = q.cdsc_format;
2576 sanitize_format(&q.cdsc_absaddr, &back, requested);
2577 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2578
2579 if (copy_to_user(argp, &q, sizeof(q)))
2580 return -EFAULT;
2581
2582 return 0;
2583}
2584
2585static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2586 void __user *argp)
2587{
2588 struct cdrom_tochdr header;
2589 int ret;
2590
2591
2592
2593 if (copy_from_user(&header, argp, sizeof(header)))
2594 return -EFAULT;
2595
2596 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2597 if (ret)
2598 return ret;
2599
2600 if (copy_to_user(argp, &header, sizeof(header)))
2601 return -EFAULT;
2602
2603 return 0;
2604}
2605
2606int cdrom_read_tocentry(struct cdrom_device_info *cdi,
2607 struct cdrom_tocentry *entry)
2608{
2609 u8 requested_format = entry->cdte_format;
2610 int ret;
2611
2612 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2613 return -EINVAL;
2614
2615
2616 entry->cdte_format = CDROM_MSF;
2617 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, entry);
2618 if (!ret)
2619 sanitize_format(&entry->cdte_addr, &entry->cdte_format,
2620 requested_format);
2621 return ret;
2622}
2623EXPORT_SYMBOL_GPL(cdrom_read_tocentry);
2624
2625static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2626 void __user *argp)
2627{
2628 struct cdrom_tocentry entry;
2629 int ret;
2630
2631 if (copy_from_user(&entry, argp, sizeof(entry)))
2632 return -EFAULT;
2633 ret = cdrom_read_tocentry(cdi, &entry);
2634 if (!ret && copy_to_user(argp, &entry, sizeof(entry)))
2635 return -EFAULT;
2636 return ret;
2637}
2638
2639static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2640 void __user *argp)
2641{
2642 struct cdrom_msf msf;
2643
2644 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2645
2646 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2647 return -ENOSYS;
2648 if (copy_from_user(&msf, argp, sizeof(msf)))
2649 return -EFAULT;
2650 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2651}
2652
2653static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2654 void __user *argp)
2655{
2656 struct cdrom_ti ti;
2657 int ret;
2658
2659 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2660
2661 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2662 return -ENOSYS;
2663 if (copy_from_user(&ti, argp, sizeof(ti)))
2664 return -EFAULT;
2665
2666 ret = check_for_audio_disc(cdi, cdi->ops);
2667 if (ret)
2668 return ret;
2669 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2670}
2671static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2672 void __user *argp)
2673{
2674 struct cdrom_volctrl volume;
2675
2676 cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2677
2678 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2679 return -ENOSYS;
2680 if (copy_from_user(&volume, argp, sizeof(volume)))
2681 return -EFAULT;
2682 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2683}
2684
2685static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2686 void __user *argp)
2687{
2688 struct cdrom_volctrl volume;
2689 int ret;
2690
2691 cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2692
2693 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2694 return -ENOSYS;
2695
2696 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2697 if (ret)
2698 return ret;
2699
2700 if (copy_to_user(argp, &volume, sizeof(volume)))
2701 return -EFAULT;
2702 return 0;
2703}
2704
2705static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2706 unsigned int cmd)
2707{
2708 int ret;
2709
2710 cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2711
2712 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2713 return -ENOSYS;
2714 ret = check_for_audio_disc(cdi, cdi->ops);
2715 if (ret)
2716 return ret;
2717 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2718}
2719
2720
2721
2722
2723
2724static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2725{
2726 const struct cdrom_device_ops *cdo = cdi->ops;
2727 struct packet_command cgc;
2728 struct modesel_head mh;
2729
2730 memset(&mh, 0, sizeof(mh));
2731 mh.block_desc_length = 0x08;
2732 mh.block_length_med = (size >> 8) & 0xff;
2733 mh.block_length_lo = size & 0xff;
2734
2735 memset(&cgc, 0, sizeof(cgc));
2736 cgc.cmd[0] = 0x15;
2737 cgc.cmd[1] = 1 << 4;
2738 cgc.cmd[4] = 12;
2739 cgc.buflen = sizeof(mh);
2740 cgc.buffer = (char *) &mh;
2741 cgc.data_direction = CGC_DATA_WRITE;
2742 mh.block_desc_length = 0x08;
2743 mh.block_length_med = (size >> 8) & 0xff;
2744 mh.block_length_lo = size & 0xff;
2745
2746 return cdo->generic_packet(cdi, &cgc);
2747}
2748
2749static int cdrom_get_track_info(struct cdrom_device_info *cdi,
2750 __u16 track, __u8 type, track_information *ti)
2751{
2752 const struct cdrom_device_ops *cdo = cdi->ops;
2753 struct packet_command cgc;
2754 int ret, buflen;
2755
2756 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
2757 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
2758 cgc.cmd[1] = type & 3;
2759 cgc.cmd[4] = (track & 0xff00) >> 8;
2760 cgc.cmd[5] = track & 0xff;
2761 cgc.cmd[8] = 8;
2762 cgc.quiet = 1;
2763
2764 ret = cdo->generic_packet(cdi, &cgc);
2765 if (ret)
2766 return ret;
2767
2768 buflen = be16_to_cpu(ti->track_information_length) +
2769 sizeof(ti->track_information_length);
2770
2771 if (buflen > sizeof(track_information))
2772 buflen = sizeof(track_information);
2773
2774 cgc.cmd[8] = cgc.buflen = buflen;
2775 ret = cdo->generic_packet(cdi, &cgc);
2776 if (ret)
2777 return ret;
2778
2779
2780 return buflen;
2781}
2782
2783
2784
2785int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
2786{
2787 struct cdrom_tocentry toc;
2788 disc_information di;
2789 track_information ti;
2790 __u32 last_track;
2791 int ret = -1, ti_size;
2792
2793 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2794 goto use_toc;
2795
2796 ret = cdrom_get_disc_info(cdi, &di);
2797 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
2798 + sizeof(di.last_track_lsb)))
2799 goto use_toc;
2800
2801
2802 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2803 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2804 if (ti_size < (int)offsetof(typeof(ti), track_start))
2805 goto use_toc;
2806
2807
2808 if (ti.blank) {
2809 if (last_track == 1)
2810 goto use_toc;
2811 last_track--;
2812 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2813 }
2814
2815 if (ti_size < (int)(offsetof(typeof(ti), track_size)
2816 + sizeof(ti.track_size)))
2817 goto use_toc;
2818
2819
2820 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
2821 + sizeof(ti.last_rec_address))) {
2822 *last_written = be32_to_cpu(ti.last_rec_address);
2823 } else {
2824
2825 *last_written = be32_to_cpu(ti.track_start) +
2826 be32_to_cpu(ti.track_size);
2827 if (ti.free_blocks)
2828 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
2829 }
2830 return 0;
2831
2832
2833
2834
2835
2836use_toc:
2837 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2838 return -ENOSYS;
2839
2840 toc.cdte_format = CDROM_MSF;
2841 toc.cdte_track = CDROM_LEADOUT;
2842 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
2843 return ret;
2844 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
2845 *last_written = toc.cdte_addr.lba;
2846 return 0;
2847}
2848
2849
2850static int cdrom_get_next_writable(struct cdrom_device_info *cdi,
2851 long *next_writable)
2852{
2853 disc_information di;
2854 track_information ti;
2855 __u16 last_track;
2856 int ret, ti_size;
2857
2858 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2859 goto use_last_written;
2860
2861 ret = cdrom_get_disc_info(cdi, &di);
2862 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
2863 + sizeof(di.last_track_lsb))
2864 goto use_last_written;
2865
2866
2867 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2868 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2869 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
2870 goto use_last_written;
2871
2872
2873 if (ti.blank) {
2874 if (last_track == 1)
2875 goto use_last_written;
2876 last_track--;
2877 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2878 if (ti_size < 0)
2879 goto use_last_written;
2880 }
2881
2882
2883 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
2884 + sizeof(ti.next_writable)) {
2885 *next_writable = be32_to_cpu(ti.next_writable);
2886 return 0;
2887 }
2888
2889use_last_written:
2890 ret = cdrom_get_last_written(cdi, next_writable);
2891 if (ret) {
2892 *next_writable = 0;
2893 return ret;
2894 } else {
2895 *next_writable += 7;
2896 return 0;
2897 }
2898}
2899
2900static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi,
2901 void __user *arg,
2902 struct packet_command *cgc,
2903 int cmd)
2904{
2905 struct scsi_sense_hdr sshdr;
2906 struct cdrom_msf msf;
2907 int blocksize = 0, format = 0, lba;
2908 int ret;
2909
2910 switch (cmd) {
2911 case CDROMREADRAW:
2912 blocksize = CD_FRAMESIZE_RAW;
2913 break;
2914 case CDROMREADMODE1:
2915 blocksize = CD_FRAMESIZE;
2916 format = 2;
2917 break;
2918 case CDROMREADMODE2:
2919 blocksize = CD_FRAMESIZE_RAW0;
2920 break;
2921 }
2922 if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
2923 return -EFAULT;
2924 lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0);
2925
2926 if (lba < 0)
2927 return -EINVAL;
2928
2929 cgc->buffer = kzalloc(blocksize, GFP_KERNEL);
2930 if (cgc->buffer == NULL)
2931 return -ENOMEM;
2932
2933 memset(&sshdr, 0, sizeof(sshdr));
2934 cgc->sshdr = &sshdr;
2935 cgc->data_direction = CGC_DATA_READ;
2936 ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize);
2937 if (ret && sshdr.sense_key == 0x05 &&
2938 sshdr.asc == 0x20 &&
2939 sshdr.ascq == 0x00) {
2940
2941
2942
2943
2944 if (blocksize != CD_FRAMESIZE) {
2945 ret = cdrom_switch_blocksize(cdi, blocksize);
2946 if (ret)
2947 goto out;
2948 }
2949 cgc->sshdr = NULL;
2950 ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1);
2951 if (blocksize != CD_FRAMESIZE)
2952 ret |= cdrom_switch_blocksize(cdi, CD_FRAMESIZE);
2953 }
2954 if (!ret && copy_to_user(arg, cgc->buffer, blocksize))
2955 ret = -EFAULT;
2956out:
2957 kfree(cgc->buffer);
2958 return ret;
2959}
2960
2961static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi,
2962 void __user *arg)
2963{
2964 struct cdrom_read_audio ra;
2965 int lba;
2966
2967#ifdef CONFIG_COMPAT
2968 if (in_compat_syscall()) {
2969 struct compat_cdrom_read_audio {
2970 union cdrom_addr addr;
2971 u8 addr_format;
2972 compat_int_t nframes;
2973 compat_caddr_t buf;
2974 } ra32;
2975
2976 if (copy_from_user(&ra32, arg, sizeof(ra32)))
2977 return -EFAULT;
2978
2979 ra = (struct cdrom_read_audio) {
2980 .addr = ra32.addr,
2981 .addr_format = ra32.addr_format,
2982 .nframes = ra32.nframes,
2983 .buf = compat_ptr(ra32.buf),
2984 };
2985 } else
2986#endif
2987 {
2988 if (copy_from_user(&ra, (struct cdrom_read_audio __user *)arg,
2989 sizeof(ra)))
2990 return -EFAULT;
2991 }
2992
2993 if (ra.addr_format == CDROM_MSF)
2994 lba = msf_to_lba(ra.addr.msf.minute,
2995 ra.addr.msf.second,
2996 ra.addr.msf.frame);
2997 else if (ra.addr_format == CDROM_LBA)
2998 lba = ra.addr.lba;
2999 else
3000 return -EINVAL;
3001
3002
3003 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
3004 return -EINVAL;
3005
3006 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
3007}
3008
3009static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi,
3010 void __user *arg)
3011{
3012 int ret;
3013 struct cdrom_subchnl q;
3014 u_char requested, back;
3015 if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q)))
3016 return -EFAULT;
3017 requested = q.cdsc_format;
3018 if (!((requested == CDROM_MSF) ||
3019 (requested == CDROM_LBA)))
3020 return -EINVAL;
3021
3022 ret = cdrom_read_subchannel(cdi, &q, 0);
3023 if (ret)
3024 return ret;
3025 back = q.cdsc_format;
3026 sanitize_format(&q.cdsc_absaddr, &back, requested);
3027 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
3028 if (copy_to_user((struct cdrom_subchnl __user *)arg, &q, sizeof(q)))
3029 return -EFAULT;
3030
3031 return 0;
3032}
3033
3034static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi,
3035 void __user *arg,
3036 struct packet_command *cgc)
3037{
3038 const struct cdrom_device_ops *cdo = cdi->ops;
3039 struct cdrom_msf msf;
3040 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
3041 if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
3042 return -EFAULT;
3043 cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF;
3044 cgc->cmd[3] = msf.cdmsf_min0;
3045 cgc->cmd[4] = msf.cdmsf_sec0;
3046 cgc->cmd[5] = msf.cdmsf_frame0;
3047 cgc->cmd[6] = msf.cdmsf_min1;
3048 cgc->cmd[7] = msf.cdmsf_sec1;
3049 cgc->cmd[8] = msf.cdmsf_frame1;
3050 cgc->data_direction = CGC_DATA_NONE;
3051 return cdo->generic_packet(cdi, cgc);
3052}
3053
3054static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi,
3055 void __user *arg,
3056 struct packet_command *cgc)
3057{
3058 const struct cdrom_device_ops *cdo = cdi->ops;
3059 struct cdrom_blk blk;
3060 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
3061 if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk)))
3062 return -EFAULT;
3063 cgc->cmd[0] = GPCMD_PLAY_AUDIO_10;
3064 cgc->cmd[2] = (blk.from >> 24) & 0xff;
3065 cgc->cmd[3] = (blk.from >> 16) & 0xff;
3066 cgc->cmd[4] = (blk.from >> 8) & 0xff;
3067 cgc->cmd[5] = blk.from & 0xff;
3068 cgc->cmd[7] = (blk.len >> 8) & 0xff;
3069 cgc->cmd[8] = blk.len & 0xff;
3070 cgc->data_direction = CGC_DATA_NONE;
3071 return cdo->generic_packet(cdi, cgc);
3072}
3073
3074static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi,
3075 void __user *arg,
3076 struct packet_command *cgc,
3077 unsigned int cmd)
3078{
3079 struct cdrom_volctrl volctrl;
3080 unsigned char buffer[32];
3081 char mask[sizeof(buffer)];
3082 unsigned short offset;
3083 int ret;
3084
3085 cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n");
3086
3087 if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg,
3088 sizeof(volctrl)))
3089 return -EFAULT;
3090
3091 cgc->buffer = buffer;
3092 cgc->buflen = 24;
3093 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0);
3094 if (ret)
3095 return ret;
3096
3097
3098
3099
3100
3101 offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6));
3102
3103 if (offset + 16 > sizeof(buffer))
3104 return -E2BIG;
3105
3106 if (offset + 16 > cgc->buflen) {
3107 cgc->buflen = offset + 16;
3108 ret = cdrom_mode_sense(cdi, cgc,
3109 GPMODE_AUDIO_CTL_PAGE, 0);
3110 if (ret)
3111 return ret;
3112 }
3113
3114
3115 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
3116 buffer[offset + 1] < 14)
3117 return -EINVAL;
3118
3119
3120
3121 if (cmd == CDROMVOLREAD) {
3122 volctrl.channel0 = buffer[offset+9];
3123 volctrl.channel1 = buffer[offset+11];
3124 volctrl.channel2 = buffer[offset+13];
3125 volctrl.channel3 = buffer[offset+15];
3126 if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl,
3127 sizeof(volctrl)))
3128 return -EFAULT;
3129 return 0;
3130 }
3131
3132
3133 cgc->buffer = mask;
3134 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1);
3135 if (ret)
3136 return ret;
3137
3138 buffer[offset + 9] = volctrl.channel0 & mask[offset + 9];
3139 buffer[offset + 11] = volctrl.channel1 & mask[offset + 11];
3140 buffer[offset + 13] = volctrl.channel2 & mask[offset + 13];
3141 buffer[offset + 15] = volctrl.channel3 & mask[offset + 15];
3142
3143
3144 cgc->buffer = buffer + offset - 8;
3145 memset(cgc->buffer, 0, 8);
3146 return cdrom_mode_select(cdi, cgc);
3147}
3148
3149static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi,
3150 struct packet_command *cgc,
3151 int cmd)
3152{
3153 const struct cdrom_device_ops *cdo = cdi->ops;
3154 cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
3155 cgc->cmd[0] = GPCMD_START_STOP_UNIT;
3156 cgc->cmd[1] = 1;
3157 cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
3158 cgc->data_direction = CGC_DATA_NONE;
3159 return cdo->generic_packet(cdi, cgc);
3160}
3161
3162static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi,
3163 struct packet_command *cgc,
3164 int cmd)
3165{
3166 const struct cdrom_device_ops *cdo = cdi->ops;
3167 cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3168 cgc->cmd[0] = GPCMD_PAUSE_RESUME;
3169 cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3170 cgc->data_direction = CGC_DATA_NONE;
3171 return cdo->generic_packet(cdi, cgc);
3172}
3173
3174static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi,
3175 void __user *arg,
3176 struct packet_command *cgc)
3177{
3178 int ret;
3179 dvd_struct *s;
3180 int size = sizeof(dvd_struct);
3181
3182 if (!CDROM_CAN(CDC_DVD))
3183 return -ENOSYS;
3184
3185 s = memdup_user(arg, size);
3186 if (IS_ERR(s))
3187 return PTR_ERR(s);
3188
3189 cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3190
3191 ret = dvd_read_struct(cdi, s, cgc);
3192 if (ret)
3193 goto out;
3194
3195 if (copy_to_user(arg, s, size))
3196 ret = -EFAULT;
3197out:
3198 kfree(s);
3199 return ret;
3200}
3201
3202static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi,
3203 void __user *arg)
3204{
3205 int ret;
3206 dvd_authinfo ai;
3207 if (!CDROM_CAN(CDC_DVD))
3208 return -ENOSYS;
3209 cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n");
3210 if (copy_from_user(&ai, (dvd_authinfo __user *)arg, sizeof(ai)))
3211 return -EFAULT;
3212 ret = dvd_do_auth(cdi, &ai);
3213 if (ret)
3214 return ret;
3215 if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai)))
3216 return -EFAULT;
3217 return 0;
3218}
3219
3220static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi,
3221 void __user *arg)
3222{
3223 int ret;
3224 long next = 0;
3225 cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3226 ret = cdrom_get_next_writable(cdi, &next);
3227 if (ret)
3228 return ret;
3229 if (copy_to_user((long __user *)arg, &next, sizeof(next)))
3230 return -EFAULT;
3231 return 0;
3232}
3233
3234static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi,
3235 void __user *arg)
3236{
3237 int ret;
3238 long last = 0;
3239 cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3240 ret = cdrom_get_last_written(cdi, &last);
3241 if (ret)
3242 return ret;
3243 if (in_compat_syscall())
3244 return put_user(last, (__s32 __user *)arg);
3245
3246 return put_user(last, (long __user *)arg);
3247}
3248
3249static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
3250 unsigned long arg)
3251{
3252 struct packet_command cgc;
3253 void __user *userptr = (void __user *)arg;
3254
3255 memset(&cgc, 0, sizeof(cgc));
3256
3257
3258
3259 switch (cmd) {
3260 case CDROMREADRAW:
3261 case CDROMREADMODE1:
3262 case CDROMREADMODE2:
3263 return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd);
3264 case CDROMREADAUDIO:
3265 return mmc_ioctl_cdrom_read_audio(cdi, userptr);
3266 case CDROMSUBCHNL:
3267 return mmc_ioctl_cdrom_subchannel(cdi, userptr);
3268 case CDROMPLAYMSF:
3269 return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc);
3270 case CDROMPLAYBLK:
3271 return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc);
3272 case CDROMVOLCTRL:
3273 case CDROMVOLREAD:
3274 return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd);
3275 case CDROMSTART:
3276 case CDROMSTOP:
3277 return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd);
3278 case CDROMPAUSE:
3279 case CDROMRESUME:
3280 return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd);
3281 case DVD_READ_STRUCT:
3282 return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc);
3283 case DVD_AUTH:
3284 return mmc_ioctl_dvd_auth(cdi, userptr);
3285 case CDROM_NEXT_WRITABLE:
3286 return mmc_ioctl_cdrom_next_writable(cdi, userptr);
3287 case CDROM_LAST_WRITTEN:
3288 return mmc_ioctl_cdrom_last_written(cdi, userptr);
3289 }
3290
3291 return -ENOTTY;
3292}
3293
3294
3295
3296
3297
3298
3299int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
3300 fmode_t mode, unsigned int cmd, unsigned long arg)
3301{
3302 void __user *argp = (void __user *)arg;
3303 int ret;
3304
3305 switch (cmd) {
3306 case CDROMMULTISESSION:
3307 return cdrom_ioctl_multisession(cdi, argp);
3308 case CDROMEJECT:
3309 return cdrom_ioctl_eject(cdi);
3310 case CDROMCLOSETRAY:
3311 return cdrom_ioctl_closetray(cdi);
3312 case CDROMEJECT_SW:
3313 return cdrom_ioctl_eject_sw(cdi, arg);
3314 case CDROM_MEDIA_CHANGED:
3315 return cdrom_ioctl_media_changed(cdi, arg);
3316 case CDROM_SET_OPTIONS:
3317 return cdrom_ioctl_set_options(cdi, arg);
3318 case CDROM_CLEAR_OPTIONS:
3319 return cdrom_ioctl_clear_options(cdi, arg);
3320 case CDROM_SELECT_SPEED:
3321 return cdrom_ioctl_select_speed(cdi, arg);
3322 case CDROM_SELECT_DISC:
3323 return cdrom_ioctl_select_disc(cdi, arg);
3324 case CDROMRESET:
3325 return cdrom_ioctl_reset(cdi, bdev);
3326 case CDROM_LOCKDOOR:
3327 return cdrom_ioctl_lock_door(cdi, arg);
3328 case CDROM_DEBUG:
3329 return cdrom_ioctl_debug(cdi, arg);
3330 case CDROM_GET_CAPABILITY:
3331 return cdrom_ioctl_get_capability(cdi);
3332 case CDROM_GET_MCN:
3333 return cdrom_ioctl_get_mcn(cdi, argp);
3334 case CDROM_DRIVE_STATUS:
3335 return cdrom_ioctl_drive_status(cdi, arg);
3336 case CDROM_DISC_STATUS:
3337 return cdrom_ioctl_disc_status(cdi);
3338 case CDROM_CHANGER_NSLOTS:
3339 return cdrom_ioctl_changer_nslots(cdi);
3340 }
3341
3342
3343
3344
3345
3346
3347
3348 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
3349 ret = mmc_ioctl(cdi, cmd, arg);
3350 if (ret != -ENOTTY)
3351 return ret;
3352 }
3353
3354
3355
3356
3357
3358
3359 switch (cmd) {
3360 case CDROMSUBCHNL:
3361 return cdrom_ioctl_get_subchnl(cdi, argp);
3362 case CDROMREADTOCHDR:
3363 return cdrom_ioctl_read_tochdr(cdi, argp);
3364 case CDROMREADTOCENTRY:
3365 return cdrom_ioctl_read_tocentry(cdi, argp);
3366 case CDROMPLAYMSF:
3367 return cdrom_ioctl_play_msf(cdi, argp);
3368 case CDROMPLAYTRKIND:
3369 return cdrom_ioctl_play_trkind(cdi, argp);
3370 case CDROMVOLCTRL:
3371 return cdrom_ioctl_volctrl(cdi, argp);
3372 case CDROMVOLREAD:
3373 return cdrom_ioctl_volread(cdi, argp);
3374 case CDROMSTART:
3375 case CDROMSTOP:
3376 case CDROMPAUSE:
3377 case CDROMRESUME:
3378 return cdrom_ioctl_audioctl(cdi, cmd);
3379 }
3380
3381 return -ENOSYS;
3382}
3383
3384EXPORT_SYMBOL(cdrom_get_last_written);
3385EXPORT_SYMBOL(register_cdrom);
3386EXPORT_SYMBOL(unregister_cdrom);
3387EXPORT_SYMBOL(cdrom_open);
3388EXPORT_SYMBOL(cdrom_release);
3389EXPORT_SYMBOL(cdrom_ioctl);
3390EXPORT_SYMBOL(cdrom_number_of_slots);
3391EXPORT_SYMBOL(cdrom_mode_select);
3392EXPORT_SYMBOL(cdrom_mode_sense);
3393EXPORT_SYMBOL(init_cdrom_command);
3394EXPORT_SYMBOL(cdrom_get_media_event);
3395
3396#ifdef CONFIG_SYSCTL
3397
3398#define CDROM_STR_SIZE 1000
3399
3400static struct cdrom_sysctl_settings {
3401 char info[CDROM_STR_SIZE];
3402 int autoclose;
3403 int autoeject;
3404 int debug;
3405 int lock;
3406 int check;
3407} cdrom_sysctl_settings;
3408
3409enum cdrom_print_option {
3410 CTL_NAME,
3411 CTL_SPEED,
3412 CTL_SLOTS,
3413 CTL_CAPABILITY
3414};
3415
3416static int cdrom_print_info(const char *header, int val, char *info,
3417 int *pos, enum cdrom_print_option option)
3418{
3419 const int max_size = sizeof(cdrom_sysctl_settings.info);
3420 struct cdrom_device_info *cdi;
3421 int ret;
3422
3423 ret = scnprintf(info + *pos, max_size - *pos, header);
3424 if (!ret)
3425 return 1;
3426
3427 *pos += ret;
3428
3429 list_for_each_entry(cdi, &cdrom_list, list) {
3430 switch (option) {
3431 case CTL_NAME:
3432 ret = scnprintf(info + *pos, max_size - *pos,
3433 "\t%s", cdi->name);
3434 break;
3435 case CTL_SPEED:
3436 ret = scnprintf(info + *pos, max_size - *pos,
3437 "\t%d", cdi->speed);
3438 break;
3439 case CTL_SLOTS:
3440 ret = scnprintf(info + *pos, max_size - *pos,
3441 "\t%d", cdi->capacity);
3442 break;
3443 case CTL_CAPABILITY:
3444 ret = scnprintf(info + *pos, max_size - *pos,
3445 "\t%d", CDROM_CAN(val) != 0);
3446 break;
3447 default:
3448 pr_info("invalid option%d\n", option);
3449 return 1;
3450 }
3451 if (!ret)
3452 return 1;
3453 *pos += ret;
3454 }
3455
3456 return 0;
3457}
3458
3459static int cdrom_sysctl_info(struct ctl_table *ctl, int write,
3460 void *buffer, size_t *lenp, loff_t *ppos)
3461{
3462 int pos;
3463 char *info = cdrom_sysctl_settings.info;
3464 const int max_size = sizeof(cdrom_sysctl_settings.info);
3465
3466 if (!*lenp || (*ppos && !write)) {
3467 *lenp = 0;
3468 return 0;
3469 }
3470
3471 mutex_lock(&cdrom_mutex);
3472
3473 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3474
3475 if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
3476 goto done;
3477 if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
3478 goto done;
3479 if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
3480 goto done;
3481 if (cdrom_print_info("\nCan close tray:\t",
3482 CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
3483 goto done;
3484 if (cdrom_print_info("\nCan open tray:\t",
3485 CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
3486 goto done;
3487 if (cdrom_print_info("\nCan lock tray:\t",
3488 CDC_LOCK, info, &pos, CTL_CAPABILITY))
3489 goto done;
3490 if (cdrom_print_info("\nCan change speed:",
3491 CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
3492 goto done;
3493 if (cdrom_print_info("\nCan select disk:",
3494 CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
3495 goto done;
3496 if (cdrom_print_info("\nCan read multisession:",
3497 CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
3498 goto done;
3499 if (cdrom_print_info("\nCan read MCN:\t",
3500 CDC_MCN, info, &pos, CTL_CAPABILITY))
3501 goto done;
3502 if (cdrom_print_info("\nReports media changed:",
3503 CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
3504 goto done;
3505 if (cdrom_print_info("\nCan play audio:\t",
3506 CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
3507 goto done;
3508 if (cdrom_print_info("\nCan write CD-R:\t",
3509 CDC_CD_R, info, &pos, CTL_CAPABILITY))
3510 goto done;
3511 if (cdrom_print_info("\nCan write CD-RW:",
3512 CDC_CD_RW, info, &pos, CTL_CAPABILITY))
3513 goto done;
3514 if (cdrom_print_info("\nCan read DVD:\t",
3515 CDC_DVD, info, &pos, CTL_CAPABILITY))
3516 goto done;
3517 if (cdrom_print_info("\nCan write DVD-R:",
3518 CDC_DVD_R, info, &pos, CTL_CAPABILITY))
3519 goto done;
3520 if (cdrom_print_info("\nCan write DVD-RAM:",
3521 CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
3522 goto done;
3523 if (cdrom_print_info("\nCan read MRW:\t",
3524 CDC_MRW, info, &pos, CTL_CAPABILITY))
3525 goto done;
3526 if (cdrom_print_info("\nCan write MRW:\t",
3527 CDC_MRW_W, info, &pos, CTL_CAPABILITY))
3528 goto done;
3529 if (cdrom_print_info("\nCan write RAM:\t",
3530 CDC_RAM, info, &pos, CTL_CAPABILITY))
3531 goto done;
3532 if (!scnprintf(info + pos, max_size - pos, "\n\n"))
3533 goto done;
3534doit:
3535 mutex_unlock(&cdrom_mutex);
3536 return proc_dostring(ctl, write, buffer, lenp, ppos);
3537done:
3538 pr_info("info buffer too small\n");
3539 goto doit;
3540}
3541
3542
3543
3544
3545
3546static void cdrom_update_settings(void)
3547{
3548 struct cdrom_device_info *cdi;
3549
3550 mutex_lock(&cdrom_mutex);
3551 list_for_each_entry(cdi, &cdrom_list, list) {
3552 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3553 cdi->options |= CDO_AUTO_CLOSE;
3554 else if (!autoclose)
3555 cdi->options &= ~CDO_AUTO_CLOSE;
3556 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3557 cdi->options |= CDO_AUTO_EJECT;
3558 else if (!autoeject)
3559 cdi->options &= ~CDO_AUTO_EJECT;
3560 if (lockdoor && CDROM_CAN(CDC_LOCK))
3561 cdi->options |= CDO_LOCK;
3562 else if (!lockdoor)
3563 cdi->options &= ~CDO_LOCK;
3564 if (check_media_type)
3565 cdi->options |= CDO_CHECK_TYPE;
3566 else
3567 cdi->options &= ~CDO_CHECK_TYPE;
3568 }
3569 mutex_unlock(&cdrom_mutex);
3570}
3571
3572static int cdrom_sysctl_handler(struct ctl_table *ctl, int write,
3573 void *buffer, size_t *lenp, loff_t *ppos)
3574{
3575 int ret;
3576
3577 ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
3578
3579 if (write) {
3580
3581
3582 autoclose = !!cdrom_sysctl_settings.autoclose;
3583 autoeject = !!cdrom_sysctl_settings.autoeject;
3584 debug = !!cdrom_sysctl_settings.debug;
3585 lockdoor = !!cdrom_sysctl_settings.lock;
3586 check_media_type = !!cdrom_sysctl_settings.check;
3587
3588
3589
3590
3591 cdrom_update_settings();
3592 }
3593
3594 return ret;
3595}
3596
3597
3598static struct ctl_table cdrom_table[] = {
3599 {
3600 .procname = "info",
3601 .data = &cdrom_sysctl_settings.info,
3602 .maxlen = CDROM_STR_SIZE,
3603 .mode = 0444,
3604 .proc_handler = cdrom_sysctl_info,
3605 },
3606 {
3607 .procname = "autoclose",
3608 .data = &cdrom_sysctl_settings.autoclose,
3609 .maxlen = sizeof(int),
3610 .mode = 0644,
3611 .proc_handler = cdrom_sysctl_handler,
3612 },
3613 {
3614 .procname = "autoeject",
3615 .data = &cdrom_sysctl_settings.autoeject,
3616 .maxlen = sizeof(int),
3617 .mode = 0644,
3618 .proc_handler = cdrom_sysctl_handler,
3619 },
3620 {
3621 .procname = "debug",
3622 .data = &cdrom_sysctl_settings.debug,
3623 .maxlen = sizeof(int),
3624 .mode = 0644,
3625 .proc_handler = cdrom_sysctl_handler,
3626 },
3627 {
3628 .procname = "lock",
3629 .data = &cdrom_sysctl_settings.lock,
3630 .maxlen = sizeof(int),
3631 .mode = 0644,
3632 .proc_handler = cdrom_sysctl_handler,
3633 },
3634 {
3635 .procname = "check_media",
3636 .data = &cdrom_sysctl_settings.check,
3637 .maxlen = sizeof(int),
3638 .mode = 0644,
3639 .proc_handler = cdrom_sysctl_handler
3640 },
3641 { }
3642};
3643
3644static struct ctl_table cdrom_cdrom_table[] = {
3645 {
3646 .procname = "cdrom",
3647 .maxlen = 0,
3648 .mode = 0555,
3649 .child = cdrom_table,
3650 },
3651 { }
3652};
3653
3654
3655static struct ctl_table cdrom_root_table[] = {
3656 {
3657 .procname = "dev",
3658 .maxlen = 0,
3659 .mode = 0555,
3660 .child = cdrom_cdrom_table,
3661 },
3662 { }
3663};
3664static struct ctl_table_header *cdrom_sysctl_header;
3665
3666static void cdrom_sysctl_register(void)
3667{
3668 static atomic_t initialized = ATOMIC_INIT(0);
3669
3670 if (!atomic_add_unless(&initialized, 1, 1))
3671 return;
3672
3673 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
3674
3675
3676 cdrom_sysctl_settings.autoclose = autoclose;
3677 cdrom_sysctl_settings.autoeject = autoeject;
3678 cdrom_sysctl_settings.debug = debug;
3679 cdrom_sysctl_settings.lock = lockdoor;
3680 cdrom_sysctl_settings.check = check_media_type;
3681}
3682
3683static void cdrom_sysctl_unregister(void)
3684{
3685 if (cdrom_sysctl_header)
3686 unregister_sysctl_table(cdrom_sysctl_header);
3687}
3688
3689#else
3690
3691static void cdrom_sysctl_register(void)
3692{
3693}
3694
3695static void cdrom_sysctl_unregister(void)
3696{
3697}
3698
3699#endif
3700
3701static int __init cdrom_init(void)
3702{
3703 cdrom_sysctl_register();
3704
3705 return 0;
3706}
3707
3708static void __exit cdrom_exit(void)
3709{
3710 pr_info("Uniform CD-ROM driver unloaded\n");
3711 cdrom_sysctl_unregister();
3712}
3713
3714module_init(cdrom_init);
3715module_exit(cdrom_exit);
3716MODULE_LICENSE("GPL");
3717