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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/module.h>
269#include <linux/fs.h>
270#include <linux/major.h>
271#include <linux/types.h>
272#include <linux/errno.h>
273#include <linux/kernel.h>
274#include <linux/mm.h>
275#include <linux/slab.h>
276#include <linux/cdrom.h>
277#include <linux/sysctl.h>
278#include <linux/proc_fs.h>
279#include <linux/blkpg.h>
280#include <linux/init.h>
281#include <linux/fcntl.h>
282#include <linux/blkdev.h>
283#include <linux/times.h>
284#include <linux/uaccess.h>
285#include <scsi/scsi_request.h>
286
287
288static bool debug;
289
290static bool autoclose=1;
291static bool autoeject;
292static bool lockdoor = 1;
293
294static bool check_media_type;
295
296static bool mrw_format_restart = 1;
297module_param(debug, bool, 0);
298module_param(autoclose, bool, 0);
299module_param(autoeject, bool, 0);
300module_param(lockdoor, bool, 0);
301module_param(check_media_type, bool, 0);
302module_param(mrw_format_restart, bool, 0);
303
304static DEFINE_MUTEX(cdrom_mutex);
305
306static const char *mrw_format_status[] = {
307 "not mrw",
308 "bgformat inactive",
309 "bgformat active",
310 "mrw complete",
311};
312
313static const char *mrw_address_space[] = { "DMA", "GAA" };
314
315#if (ERRLOGMASK != CD_NOTHING)
316#define cd_dbg(type, fmt, ...) \
317do { \
318 if ((ERRLOGMASK & type) || debug == 1) \
319 pr_debug(fmt, ##__VA_ARGS__); \
320} while (0)
321#else
322#define cd_dbg(type, fmt, ...) \
323do { \
324 if (0 && (ERRLOGMASK & type) || debug == 1) \
325 pr_debug(fmt, ##__VA_ARGS__); \
326} while (0)
327#endif
328
329
330
331#define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
332
333
334
335
336
337#define CDROM_DEF_TIMEOUT (7 * HZ)
338
339
340
341static void cdrom_sysctl_register(void);
342
343static LIST_HEAD(cdrom_list);
344
345int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
346 struct packet_command *cgc)
347{
348 if (cgc->sense) {
349 cgc->sense->sense_key = 0x05;
350 cgc->sense->asc = 0x20;
351 cgc->sense->ascq = 0x00;
352 }
353
354 cgc->stat = -EIO;
355 return -EIO;
356}
357EXPORT_SYMBOL(cdrom_dummy_generic_packet);
358
359static int cdrom_flush_cache(struct cdrom_device_info *cdi)
360{
361 struct packet_command cgc;
362
363 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
364 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
365
366 cgc.timeout = 5 * 60 * HZ;
367
368 return cdi->ops->generic_packet(cdi, &cgc);
369}
370
371
372static int cdrom_get_disc_info(struct cdrom_device_info *cdi,
373 disc_information *di)
374{
375 const struct cdrom_device_ops *cdo = cdi->ops;
376 struct packet_command cgc;
377 int ret, buflen;
378
379
380 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
381 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
382 cgc.cmd[8] = cgc.buflen = 2;
383 cgc.quiet = 1;
384
385 ret = cdo->generic_packet(cdi, &cgc);
386 if (ret)
387 return ret;
388
389
390
391
392 buflen = be16_to_cpu(di->disc_information_length) +
393 sizeof(di->disc_information_length);
394
395 if (buflen > sizeof(disc_information))
396 buflen = sizeof(disc_information);
397
398 cgc.cmd[8] = cgc.buflen = buflen;
399 ret = cdo->generic_packet(cdi, &cgc);
400 if (ret)
401 return ret;
402
403
404 return buflen;
405}
406
407
408
409
410
411
412#define ENSURE(call, bits) \
413do { \
414 if (cdo->call == NULL) \
415 *change_capability &= ~(bits); \
416} while (0)
417
418
419
420
421
422static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
423{
424 struct packet_command cgc;
425 char buffer[16];
426
427 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
428
429 cgc.timeout = HZ;
430 cgc.quiet = 1;
431
432 if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
433 cdi->mrw_mode_page = MRW_MODE_PC;
434 return 0;
435 } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
436 cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
437 return 0;
438 }
439
440 return 1;
441}
442
443static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
444{
445 struct packet_command cgc;
446 struct mrw_feature_desc *mfd;
447 unsigned char buffer[16];
448 int ret;
449
450 *write = 0;
451
452 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
453
454 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
455 cgc.cmd[3] = CDF_MRW;
456 cgc.cmd[8] = sizeof(buffer);
457 cgc.quiet = 1;
458
459 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
460 return ret;
461
462 mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
463 if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
464 return 1;
465 *write = mfd->write;
466
467 if ((ret = cdrom_mrw_probe_pc(cdi))) {
468 *write = 0;
469 return ret;
470 }
471
472 return 0;
473}
474
475static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
476{
477 struct packet_command cgc;
478 unsigned char buffer[12];
479 int ret;
480
481 pr_info("%sstarting format\n", cont ? "Re" : "");
482
483
484
485
486 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
487 cgc.cmd[0] = GPCMD_FORMAT_UNIT;
488 cgc.cmd[1] = (1 << 4) | 1;
489
490 cgc.timeout = 5 * 60 * HZ;
491
492
493
494
495 buffer[1] = 1 << 1;
496 buffer[3] = 8;
497
498
499
500
501 buffer[4] = 0xff;
502 buffer[5] = 0xff;
503 buffer[6] = 0xff;
504 buffer[7] = 0xff;
505
506 buffer[8] = 0x24 << 2;
507 buffer[11] = cont;
508
509 ret = cdi->ops->generic_packet(cdi, &cgc);
510 if (ret)
511 pr_info("bgformat failed\n");
512
513 return ret;
514}
515
516static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
517{
518 struct packet_command cgc;
519
520 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
521 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
522
523
524
525
526 cgc.cmd[1] = !!immed;
527 cgc.cmd[2] = 1 << 1;
528
529 cgc.timeout = 5 * 60 * HZ;
530
531 return cdi->ops->generic_packet(cdi, &cgc);
532}
533
534static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
535{
536 disc_information di;
537 int ret;
538
539 ret = cdrom_get_disc_info(cdi, &di);
540 if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
541 return 1;
542
543 ret = 0;
544 if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
545 pr_info("issuing MRW background format suspend\n");
546 ret = cdrom_mrw_bgformat_susp(cdi, 0);
547 }
548
549 if (!ret && cdi->media_written)
550 ret = cdrom_flush_cache(cdi);
551
552 return ret;
553}
554
555static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
556{
557 struct packet_command cgc;
558 struct mode_page_header *mph;
559 char buffer[16];
560 int ret, offset, size;
561
562 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
563
564 cgc.buffer = buffer;
565 cgc.buflen = sizeof(buffer);
566
567 ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0);
568 if (ret)
569 return ret;
570
571 mph = (struct mode_page_header *)buffer;
572 offset = be16_to_cpu(mph->desc_length);
573 size = be16_to_cpu(mph->mode_data_length) + 2;
574
575 buffer[offset + 3] = space;
576 cgc.buflen = size;
577
578 ret = cdrom_mode_select(cdi, &cgc);
579 if (ret)
580 return ret;
581
582 pr_info("%s: mrw address space %s selected\n",
583 cdi->name, mrw_address_space[space]);
584 return 0;
585}
586
587int register_cdrom(struct cdrom_device_info *cdi)
588{
589 static char banner_printed;
590 const struct cdrom_device_ops *cdo = cdi->ops;
591 int *change_capability = (int *)&cdo->capability;
592
593 cd_dbg(CD_OPEN, "entering register_cdrom\n");
594
595 if (cdo->open == NULL || cdo->release == NULL)
596 return -EINVAL;
597 if (!banner_printed) {
598 pr_info("Uniform CD-ROM driver " REVISION "\n");
599 banner_printed = 1;
600 cdrom_sysctl_register();
601 }
602
603 ENSURE(drive_status, CDC_DRIVE_STATUS);
604 if (cdo->check_events == NULL && cdo->media_changed == NULL)
605 *change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC);
606 ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
607 ENSURE(lock_door, CDC_LOCK);
608 ENSURE(select_speed, CDC_SELECT_SPEED);
609 ENSURE(get_last_session, CDC_MULTI_SESSION);
610 ENSURE(get_mcn, CDC_MCN);
611 ENSURE(reset, CDC_RESET);
612 ENSURE(generic_packet, CDC_GENERIC_PACKET);
613 cdi->mc_flags = 0;
614 cdi->options = CDO_USE_FFLAGS;
615
616 if (autoclose == 1 && CDROM_CAN(CDC_CLOSE_TRAY))
617 cdi->options |= (int) CDO_AUTO_CLOSE;
618 if (autoeject == 1 && CDROM_CAN(CDC_OPEN_TRAY))
619 cdi->options |= (int) CDO_AUTO_EJECT;
620 if (lockdoor == 1)
621 cdi->options |= (int) CDO_LOCK;
622 if (check_media_type == 1)
623 cdi->options |= (int) CDO_CHECK_TYPE;
624
625 if (CDROM_CAN(CDC_MRW_W))
626 cdi->exit = cdrom_mrw_exit;
627
628 if (cdi->disk)
629 cdi->cdda_method = CDDA_BPC_FULL;
630 else
631 cdi->cdda_method = CDDA_OLD;
632
633 WARN_ON(!cdo->generic_packet);
634
635 cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
636 mutex_lock(&cdrom_mutex);
637 list_add(&cdi->list, &cdrom_list);
638 mutex_unlock(&cdrom_mutex);
639 return 0;
640}
641#undef ENSURE
642
643void unregister_cdrom(struct cdrom_device_info *cdi)
644{
645 cd_dbg(CD_OPEN, "entering unregister_cdrom\n");
646
647 mutex_lock(&cdrom_mutex);
648 list_del(&cdi->list);
649 mutex_unlock(&cdrom_mutex);
650
651 if (cdi->exit)
652 cdi->exit(cdi);
653
654 cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
655}
656
657int cdrom_get_media_event(struct cdrom_device_info *cdi,
658 struct media_event_desc *med)
659{
660 struct packet_command cgc;
661 unsigned char buffer[8];
662 struct event_header *eh = (struct event_header *)buffer;
663
664 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
665 cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
666 cgc.cmd[1] = 1;
667 cgc.cmd[4] = 1 << 4;
668 cgc.cmd[8] = sizeof(buffer);
669 cgc.quiet = 1;
670
671 if (cdi->ops->generic_packet(cdi, &cgc))
672 return 1;
673
674 if (be16_to_cpu(eh->data_len) < sizeof(*med))
675 return 1;
676
677 if (eh->nea || eh->notification_class != 0x4)
678 return 1;
679
680 memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
681 return 0;
682}
683
684static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
685 struct rwrt_feature_desc *rfd)
686{
687 struct packet_command cgc;
688 char buffer[24];
689 int ret;
690
691 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
692
693 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
694 cgc.cmd[3] = CDF_RWRT;
695 cgc.cmd[8] = sizeof(buffer);
696 cgc.quiet = 1;
697
698 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
699 return ret;
700
701 memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
702 return 0;
703}
704
705static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
706{
707 struct packet_command cgc;
708 char buffer[16];
709 __be16 *feature_code;
710 int ret;
711
712 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
713
714 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
715 cgc.cmd[3] = CDF_HWDM;
716 cgc.cmd[8] = sizeof(buffer);
717 cgc.quiet = 1;
718
719 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
720 return ret;
721
722 feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
723 if (be16_to_cpu(*feature_code) == CDF_HWDM)
724 return 0;
725
726 return 1;
727}
728
729
730static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
731{
732 struct rwrt_feature_desc rfd;
733 int ret;
734
735 *write = 0;
736
737 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
738 return ret;
739
740 if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
741 *write = 1;
742
743 return 0;
744}
745
746static int cdrom_media_erasable(struct cdrom_device_info *cdi)
747{
748 disc_information di;
749 int ret;
750
751 ret = cdrom_get_disc_info(cdi, &di);
752 if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
753 return -1;
754
755 return di.erasable;
756}
757
758
759
760
761static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
762{
763 int ret = cdrom_media_erasable(cdi);
764
765
766
767
768
769 if (!ret)
770 return 1;
771
772 return 0;
773}
774
775static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
776{
777 disc_information di;
778 int ret;
779
780
781
782
783 if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
784 pr_err("failed setting lba address space\n");
785 return 1;
786 }
787
788 ret = cdrom_get_disc_info(cdi, &di);
789 if (ret < 0 || ret < offsetof(typeof(di),disc_type))
790 return 1;
791
792 if (!di.erasable)
793 return 1;
794
795
796
797
798
799
800
801
802 ret = 0;
803 pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]);
804 if (!di.mrw_status)
805 ret = 1;
806 else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
807 mrw_format_restart)
808 ret = cdrom_mrw_bgformat(cdi, 1);
809
810 return ret;
811}
812
813static int mo_open_write(struct cdrom_device_info *cdi)
814{
815 struct packet_command cgc;
816 char buffer[255];
817 int ret;
818
819 init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
820 cgc.quiet = 1;
821
822
823
824
825
826
827 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
828 if (ret)
829 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
830 if (ret) {
831 cgc.buflen = 255;
832 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
833 }
834
835
836 if (ret)
837 return 0;
838
839 return buffer[3] & 0x80;
840}
841
842static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
843{
844 struct rwrt_feature_desc rfd;
845 int ret;
846
847 if ((ret = cdrom_has_defect_mgt(cdi)))
848 return ret;
849
850 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
851 return ret;
852 else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
853 ret = !rfd.curr;
854
855 cd_dbg(CD_OPEN, "can open for random write\n");
856 return ret;
857}
858
859static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
860{
861 struct packet_command cgc;
862 char buffer[32];
863 int ret, mmc3_profile;
864
865 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
866
867 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
868 cgc.cmd[1] = 0;
869 cgc.cmd[2] = cgc.cmd[3] = 0;
870 cgc.cmd[8] = sizeof(buffer);
871 cgc.quiet = 1;
872
873 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
874 mmc3_profile = 0xffff;
875 else
876 mmc3_profile = (buffer[6] << 8) | buffer[7];
877
878 cdi->mmc3_profile = mmc3_profile;
879}
880
881static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
882{
883 switch (cdi->mmc3_profile) {
884 case 0x12:
885 case 0x1A:
886 case 0x43:
887 return 0;
888 default:
889 return 1;
890 }
891}
892
893
894
895
896static int cdrom_open_write(struct cdrom_device_info *cdi)
897{
898 int mrw, mrw_write, ram_write;
899 int ret = 1;
900
901 mrw = 0;
902 if (!cdrom_is_mrw(cdi, &mrw_write))
903 mrw = 1;
904
905 if (CDROM_CAN(CDC_MO_DRIVE))
906 ram_write = 1;
907 else
908 (void) cdrom_is_random_writable(cdi, &ram_write);
909
910 if (mrw)
911 cdi->mask &= ~CDC_MRW;
912 else
913 cdi->mask |= CDC_MRW;
914
915 if (mrw_write)
916 cdi->mask &= ~CDC_MRW_W;
917 else
918 cdi->mask |= CDC_MRW_W;
919
920 if (ram_write)
921 cdi->mask &= ~CDC_RAM;
922 else
923 cdi->mask |= CDC_RAM;
924
925 if (CDROM_CAN(CDC_MRW_W))
926 ret = cdrom_mrw_open_write(cdi);
927 else if (CDROM_CAN(CDC_DVD_RAM))
928 ret = cdrom_dvdram_open_write(cdi);
929 else if (CDROM_CAN(CDC_RAM) &&
930 !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
931 ret = cdrom_ram_open_write(cdi);
932 else if (CDROM_CAN(CDC_MO_DRIVE))
933 ret = mo_open_write(cdi);
934 else if (!cdrom_is_dvd_rw(cdi))
935 ret = 0;
936
937 return ret;
938}
939
940static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
941{
942 struct packet_command cgc;
943
944 if (cdi->mmc3_profile != 0x1a) {
945 cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
946 return;
947 }
948
949 if (!cdi->media_written) {
950 cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
951 return;
952 }
953
954 pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name);
955
956 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
957 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
958 cgc.timeout = 30*HZ;
959 cdi->ops->generic_packet(cdi, &cgc);
960
961 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
962 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
963 cgc.timeout = 3000*HZ;
964 cgc.quiet = 1;
965 cdi->ops->generic_packet(cdi, &cgc);
966
967 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
968 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
969 cgc.cmd[2] = 2;
970 cgc.quiet = 1;
971 cgc.timeout = 3000*HZ;
972 cdi->ops->generic_packet(cdi, &cgc);
973
974 cdi->media_written = 0;
975}
976
977static int cdrom_close_write(struct cdrom_device_info *cdi)
978{
979#if 0
980 return cdrom_flush_cache(cdi);
981#else
982 return 0;
983#endif
984}
985
986
987static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks)
988{
989 struct cdrom_tochdr header;
990 struct cdrom_tocentry entry;
991 int ret, i;
992 tracks->data = 0;
993 tracks->audio = 0;
994 tracks->cdi = 0;
995 tracks->xa = 0;
996 tracks->error = 0;
997 cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
998
999 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
1000 if (ret) {
1001 if (ret == -ENOMEDIUM)
1002 tracks->error = CDS_NO_DISC;
1003 else
1004 tracks->error = CDS_NO_INFO;
1005 return;
1006 }
1007
1008 entry.cdte_format = CDROM_MSF;
1009 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1010 entry.cdte_track = i;
1011 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1012 tracks->error = CDS_NO_INFO;
1013 return;
1014 }
1015 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1016 if (entry.cdte_format == 0x10)
1017 tracks->cdi++;
1018 else if (entry.cdte_format == 0x20)
1019 tracks->xa++;
1020 else
1021 tracks->data++;
1022 } else {
1023 tracks->audio++;
1024 }
1025 cd_dbg(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1026 i, entry.cdte_format, entry.cdte_ctrl);
1027 }
1028 cd_dbg(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1029 header.cdth_trk1, tracks->audio, tracks->data,
1030 tracks->cdi, tracks->xa);
1031}
1032
1033static
1034int open_for_data(struct cdrom_device_info *cdi)
1035{
1036 int ret;
1037 const struct cdrom_device_ops *cdo = cdi->ops;
1038 tracktype tracks;
1039 cd_dbg(CD_OPEN, "entering open_for_data\n");
1040
1041
1042 if (cdo->drive_status != NULL) {
1043 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1044 cd_dbg(CD_OPEN, "drive_status=%d\n", ret);
1045 if (ret == CDS_TRAY_OPEN) {
1046 cd_dbg(CD_OPEN, "the tray is open...\n");
1047
1048 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1049 cdi->options & CDO_AUTO_CLOSE) {
1050 cd_dbg(CD_OPEN, "trying to close the tray\n");
1051 ret=cdo->tray_move(cdi,0);
1052 if (ret) {
1053 cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n");
1054
1055
1056
1057
1058
1059 ret=-ENOMEDIUM;
1060 goto clean_up_and_return;
1061 }
1062 } else {
1063 cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n");
1064 ret=-ENOMEDIUM;
1065 goto clean_up_and_return;
1066 }
1067
1068 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1069 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1070 cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
1071 cd_dbg(CD_OPEN, "tray might not contain a medium\n");
1072 ret=-ENOMEDIUM;
1073 goto clean_up_and_return;
1074 }
1075 cd_dbg(CD_OPEN, "the tray is now closed\n");
1076 }
1077
1078 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1079 if (ret!=CDS_DISC_OK) {
1080 ret = -ENOMEDIUM;
1081 goto clean_up_and_return;
1082 }
1083 }
1084 cdrom_count_tracks(cdi, &tracks);
1085 if (tracks.error == CDS_NO_DISC) {
1086 cd_dbg(CD_OPEN, "bummer. no disc.\n");
1087 ret=-ENOMEDIUM;
1088 goto clean_up_and_return;
1089 }
1090
1091
1092 if (tracks.data==0) {
1093 if (cdi->options & CDO_CHECK_TYPE) {
1094
1095
1096 cd_dbg(CD_OPEN, "bummer. wrong media type.\n");
1097 cd_dbg(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
1098 (unsigned int)task_pid_nr(current));
1099 ret=-EMEDIUMTYPE;
1100 goto clean_up_and_return;
1101 }
1102 else {
1103 cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n");
1104 }
1105 }
1106
1107 cd_dbg(CD_OPEN, "all seems well, opening the devicen");
1108
1109
1110 ret = cdo->open(cdi, 0);
1111 cd_dbg(CD_OPEN, "opening the device gave me %d\n", ret);
1112
1113
1114
1115 if (ret) {
1116 cd_dbg(CD_OPEN, "open device failed\n");
1117 goto clean_up_and_return;
1118 }
1119 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
1120 cdo->lock_door(cdi, 1);
1121 cd_dbg(CD_OPEN, "door locked\n");
1122 }
1123 cd_dbg(CD_OPEN, "device opened successfully\n");
1124 return ret;
1125
1126
1127
1128
1129
1130
1131clean_up_and_return:
1132 cd_dbg(CD_OPEN, "open failed\n");
1133 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1134 cdo->lock_door(cdi, 0);
1135 cd_dbg(CD_OPEN, "door unlocked\n");
1136 }
1137 return ret;
1138}
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev,
1149 fmode_t mode)
1150{
1151 int ret;
1152
1153 cd_dbg(CD_OPEN, "entering cdrom_open\n");
1154
1155
1156
1157 cdi->use_count++;
1158 if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) {
1159 ret = cdi->ops->open(cdi, 1);
1160 } else {
1161 ret = open_for_data(cdi);
1162 if (ret)
1163 goto err;
1164 cdrom_mmc3_profile(cdi);
1165 if (mode & FMODE_WRITE) {
1166 ret = -EROFS;
1167 if (cdrom_open_write(cdi))
1168 goto err_release;
1169 if (!CDROM_CAN(CDC_RAM))
1170 goto err_release;
1171 ret = 0;
1172 cdi->media_written = 0;
1173 }
1174 }
1175
1176 if (ret)
1177 goto err;
1178
1179 cd_dbg(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
1180 cdi->name, cdi->use_count);
1181 return 0;
1182err_release:
1183 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1184 cdi->ops->lock_door(cdi, 0);
1185 cd_dbg(CD_OPEN, "door unlocked\n");
1186 }
1187 cdi->ops->release(cdi);
1188err:
1189 cdi->use_count--;
1190 return ret;
1191}
1192
1193
1194
1195
1196static int check_for_audio_disc(struct cdrom_device_info *cdi,
1197 const struct cdrom_device_ops *cdo)
1198{
1199 int ret;
1200 tracktype tracks;
1201 cd_dbg(CD_OPEN, "entering check_for_audio_disc\n");
1202 if (!(cdi->options & CDO_CHECK_TYPE))
1203 return 0;
1204 if (cdo->drive_status != NULL) {
1205 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1206 cd_dbg(CD_OPEN, "drive_status=%d\n", ret);
1207 if (ret == CDS_TRAY_OPEN) {
1208 cd_dbg(CD_OPEN, "the tray is open...\n");
1209
1210 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1211 cdi->options & CDO_AUTO_CLOSE) {
1212 cd_dbg(CD_OPEN, "trying to close the tray\n");
1213 ret=cdo->tray_move(cdi,0);
1214 if (ret) {
1215 cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n");
1216
1217
1218
1219
1220
1221 return -ENOMEDIUM;
1222 }
1223 } else {
1224 cd_dbg(CD_OPEN, "bummer. this driver can't close the tray.\n");
1225 return -ENOMEDIUM;
1226 }
1227
1228 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1229 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1230 cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
1231 return -ENOMEDIUM;
1232 }
1233 if (ret!=CDS_DISC_OK) {
1234 cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n");
1235 return -EIO;
1236 }
1237 cd_dbg(CD_OPEN, "the tray is now closed\n");
1238 }
1239 }
1240 cdrom_count_tracks(cdi, &tracks);
1241 if (tracks.error)
1242 return(tracks.error);
1243
1244 if (tracks.audio==0)
1245 return -EMEDIUMTYPE;
1246
1247 return 0;
1248}
1249
1250void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
1251{
1252 const struct cdrom_device_ops *cdo = cdi->ops;
1253 int opened_for_data;
1254
1255 cd_dbg(CD_CLOSE, "entering cdrom_release\n");
1256
1257 if (cdi->use_count > 0)
1258 cdi->use_count--;
1259
1260 if (cdi->use_count == 0) {
1261 cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n",
1262 cdi->name);
1263 cdrom_dvd_rw_close_write(cdi);
1264
1265 if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) {
1266 cd_dbg(CD_CLOSE, "Unlocking door!\n");
1267 cdo->lock_door(cdi, 0);
1268 }
1269 }
1270
1271 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
1272 !(mode & FMODE_NDELAY);
1273
1274
1275
1276
1277 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
1278 cdrom_close_write(cdi);
1279
1280 cdo->release(cdi);
1281 if (cdi->use_count == 0) {
1282 if (opened_for_data &&
1283 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
1284 cdo->tray_move(cdi, 1);
1285 }
1286}
1287
1288static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1289 struct cdrom_changer_info *buf)
1290{
1291 struct packet_command cgc;
1292 const struct cdrom_device_ops *cdo = cdi->ops;
1293 int length;
1294
1295
1296
1297
1298
1299
1300 if (cdi->sanyo_slot) {
1301 buf->hdr.nslots = 3;
1302 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1303 for (length = 0; length < 3; length++) {
1304 buf->slots[length].disc_present = 1;
1305 buf->slots[length].change = 0;
1306 }
1307 return 0;
1308 }
1309
1310 length = sizeof(struct cdrom_mechstat_header) +
1311 cdi->capacity * sizeof(struct cdrom_slot);
1312
1313 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1314 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1315 cgc.cmd[8] = (length >> 8) & 0xff;
1316 cgc.cmd[9] = length & 0xff;
1317 return cdo->generic_packet(cdi, &cgc);
1318}
1319
1320static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1321{
1322 struct cdrom_changer_info *info;
1323 int ret;
1324
1325 cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n");
1326 if (cdi->sanyo_slot)
1327 return CDS_NO_INFO;
1328
1329 info = kmalloc(sizeof(*info), GFP_KERNEL);
1330 if (!info)
1331 return -ENOMEM;
1332
1333 if ((ret = cdrom_read_mech_status(cdi, info)))
1334 goto out_free;
1335
1336 if (info->slots[slot].disc_present)
1337 ret = CDS_DISC_OK;
1338 else
1339 ret = CDS_NO_DISC;
1340
1341out_free:
1342 kfree(info);
1343 return ret;
1344}
1345
1346
1347
1348
1349int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1350{
1351 int status;
1352 int nslots = 1;
1353 struct cdrom_changer_info *info;
1354
1355 cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1356
1357 cdi->capacity = 0;
1358
1359 info = kmalloc(sizeof(*info), GFP_KERNEL);
1360 if (!info)
1361 return -ENOMEM;
1362
1363 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1364 nslots = info->hdr.nslots;
1365
1366 kfree(info);
1367 return nslots;
1368}
1369
1370
1371
1372static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1373{
1374 struct packet_command cgc;
1375
1376 cd_dbg(CD_CHANGER, "entering cdrom_load_unload()\n");
1377 if (cdi->sanyo_slot && slot < 0)
1378 return 0;
1379
1380 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1381 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1382 cgc.cmd[4] = 2 + (slot >= 0);
1383 cgc.cmd[8] = slot;
1384 cgc.timeout = 60 * HZ;
1385
1386
1387
1388
1389 if (cdi->sanyo_slot && -1 < slot) {
1390 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1391 cgc.cmd[7] = slot;
1392 cgc.cmd[4] = cgc.cmd[8] = 0;
1393 cdi->sanyo_slot = slot ? slot : 3;
1394 }
1395
1396 return cdi->ops->generic_packet(cdi, &cgc);
1397}
1398
1399static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1400{
1401 struct cdrom_changer_info *info;
1402 int curslot;
1403 int ret;
1404
1405 cd_dbg(CD_CHANGER, "entering cdrom_select_disc()\n");
1406 if (!CDROM_CAN(CDC_SELECT_DISC))
1407 return -EDRIVE_CANT_DO_THIS;
1408
1409 if (cdi->ops->check_events)
1410 cdi->ops->check_events(cdi, 0, slot);
1411 else
1412 cdi->ops->media_changed(cdi, slot);
1413
1414 if (slot == CDSL_NONE) {
1415
1416 cdi->mc_flags = 0x3;
1417 return cdrom_load_unload(cdi, -1);
1418 }
1419
1420 info = kmalloc(sizeof(*info), GFP_KERNEL);
1421 if (!info)
1422 return -ENOMEM;
1423
1424 if ((ret = cdrom_read_mech_status(cdi, info))) {
1425 kfree(info);
1426 return ret;
1427 }
1428
1429 curslot = info->hdr.curslot;
1430 kfree(info);
1431
1432 if (cdi->use_count > 1 || cdi->keeplocked) {
1433 if (slot == CDSL_CURRENT) {
1434 return curslot;
1435 } else {
1436 return -EBUSY;
1437 }
1438 }
1439
1440
1441
1442
1443
1444
1445 if (slot == CDSL_CURRENT)
1446 slot = curslot;
1447
1448
1449 cdi->mc_flags = 0x3;
1450 if ((ret = cdrom_load_unload(cdi, slot)))
1451 return ret;
1452
1453 return slot;
1454}
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470static void cdrom_update_events(struct cdrom_device_info *cdi,
1471 unsigned int clearing)
1472{
1473 unsigned int events;
1474
1475 events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT);
1476 cdi->vfs_events |= events;
1477 cdi->ioctl_events |= events;
1478}
1479
1480unsigned int cdrom_check_events(struct cdrom_device_info *cdi,
1481 unsigned int clearing)
1482{
1483 unsigned int events;
1484
1485 cdrom_update_events(cdi, clearing);
1486 events = cdi->vfs_events;
1487 cdi->vfs_events = 0;
1488 return events;
1489}
1490EXPORT_SYMBOL(cdrom_check_events);
1491
1492
1493
1494
1495
1496
1497
1498static
1499int media_changed(struct cdrom_device_info *cdi, int queue)
1500{
1501 unsigned int mask = (1 << (queue & 1));
1502 int ret = !!(cdi->mc_flags & mask);
1503 bool changed;
1504
1505 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1506 return ret;
1507
1508
1509 if (cdi->ops->check_events) {
1510 BUG_ON(!queue);
1511 cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE);
1512 changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE;
1513 cdi->ioctl_events = 0;
1514 } else
1515 changed = cdi->ops->media_changed(cdi, CDSL_CURRENT);
1516
1517 if (changed) {
1518 cdi->mc_flags = 0x3;
1519 ret |= 1;
1520 cdi->media_written = 0;
1521 }
1522
1523 cdi->mc_flags &= ~mask;
1524 return ret;
1525}
1526
1527int cdrom_media_changed(struct cdrom_device_info *cdi)
1528{
1529
1530
1531
1532 if (cdi == NULL || cdi->ops->media_changed == NULL)
1533 return 0;
1534 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1535 return 0;
1536 return media_changed(cdi, 0);
1537}
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555static
1556void sanitize_format(union cdrom_addr *addr,
1557 u_char * curr, u_char requested)
1558{
1559 if (*curr == requested)
1560 return;
1561 if (requested == CDROM_LBA) {
1562 addr->lba = (int) addr->msf.frame +
1563 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1564 } else {
1565 int lba = addr->lba;
1566 addr->msf.frame = lba % 75;
1567 lba /= 75;
1568 lba += 2;
1569 addr->msf.second = lba % 60;
1570 addr->msf.minute = lba / 60;
1571 }
1572 *curr = requested;
1573}
1574
1575void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1576 int type)
1577{
1578 memset(cgc, 0, sizeof(struct packet_command));
1579 if (buf)
1580 memset(buf, 0, len);
1581 cgc->buffer = (char *) buf;
1582 cgc->buflen = len;
1583 cgc->data_direction = type;
1584 cgc->timeout = CDROM_DEF_TIMEOUT;
1585}
1586
1587
1588
1589#define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1590#define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1591
1592static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1593{
1594 cgc->cmd[0] = GPCMD_REPORT_KEY;
1595 cgc->cmd[10] = type | (agid << 6);
1596 switch (type) {
1597 case 0: case 8: case 5: {
1598 cgc->buflen = 8;
1599 break;
1600 }
1601 case 1: {
1602 cgc->buflen = 16;
1603 break;
1604 }
1605 case 2: case 4: {
1606 cgc->buflen = 12;
1607 break;
1608 }
1609 }
1610 cgc->cmd[9] = cgc->buflen;
1611 cgc->data_direction = CGC_DATA_READ;
1612}
1613
1614static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1615{
1616 cgc->cmd[0] = GPCMD_SEND_KEY;
1617 cgc->cmd[10] = type | (agid << 6);
1618 switch (type) {
1619 case 1: {
1620 cgc->buflen = 16;
1621 break;
1622 }
1623 case 3: {
1624 cgc->buflen = 12;
1625 break;
1626 }
1627 case 6: {
1628 cgc->buflen = 8;
1629 break;
1630 }
1631 }
1632 cgc->cmd[9] = cgc->buflen;
1633 cgc->data_direction = CGC_DATA_WRITE;
1634}
1635
1636static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1637{
1638 int ret;
1639 u_char buf[20];
1640 struct packet_command cgc;
1641 const struct cdrom_device_ops *cdo = cdi->ops;
1642 rpc_state_t rpc_state;
1643
1644 memset(buf, 0, sizeof(buf));
1645 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1646
1647 switch (ai->type) {
1648
1649 case DVD_LU_SEND_AGID:
1650 cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1651 cgc.quiet = 1;
1652 setup_report_key(&cgc, ai->lsa.agid, 0);
1653
1654 if ((ret = cdo->generic_packet(cdi, &cgc)))
1655 return ret;
1656
1657 ai->lsa.agid = buf[7] >> 6;
1658
1659 break;
1660
1661 case DVD_LU_SEND_KEY1:
1662 cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1663 setup_report_key(&cgc, ai->lsk.agid, 2);
1664
1665 if ((ret = cdo->generic_packet(cdi, &cgc)))
1666 return ret;
1667
1668 copy_key(ai->lsk.key, &buf[4]);
1669
1670 break;
1671
1672 case DVD_LU_SEND_CHALLENGE:
1673 cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1674 setup_report_key(&cgc, ai->lsc.agid, 1);
1675
1676 if ((ret = cdo->generic_packet(cdi, &cgc)))
1677 return ret;
1678
1679 copy_chal(ai->lsc.chal, &buf[4]);
1680
1681 break;
1682
1683
1684 case DVD_LU_SEND_TITLE_KEY:
1685 cd_dbg(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1686 cgc.quiet = 1;
1687 setup_report_key(&cgc, ai->lstk.agid, 4);
1688 cgc.cmd[5] = ai->lstk.lba;
1689 cgc.cmd[4] = ai->lstk.lba >> 8;
1690 cgc.cmd[3] = ai->lstk.lba >> 16;
1691 cgc.cmd[2] = ai->lstk.lba >> 24;
1692
1693 if ((ret = cdo->generic_packet(cdi, &cgc)))
1694 return ret;
1695
1696 ai->lstk.cpm = (buf[4] >> 7) & 1;
1697 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1698 ai->lstk.cgms = (buf[4] >> 4) & 3;
1699 copy_key(ai->lstk.title_key, &buf[5]);
1700
1701 break;
1702
1703 case DVD_LU_SEND_ASF:
1704 cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1705 setup_report_key(&cgc, ai->lsasf.agid, 5);
1706
1707 if ((ret = cdo->generic_packet(cdi, &cgc)))
1708 return ret;
1709
1710 ai->lsasf.asf = buf[7] & 1;
1711 break;
1712
1713
1714 case DVD_HOST_SEND_CHALLENGE:
1715 cd_dbg(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1716 setup_send_key(&cgc, ai->hsc.agid, 1);
1717 buf[1] = 0xe;
1718 copy_chal(&buf[4], ai->hsc.chal);
1719
1720 if ((ret = cdo->generic_packet(cdi, &cgc)))
1721 return ret;
1722
1723 ai->type = DVD_LU_SEND_KEY1;
1724 break;
1725
1726 case DVD_HOST_SEND_KEY2:
1727 cd_dbg(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1728 setup_send_key(&cgc, ai->hsk.agid, 3);
1729 buf[1] = 0xa;
1730 copy_key(&buf[4], ai->hsk.key);
1731
1732 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1733 ai->type = DVD_AUTH_FAILURE;
1734 return ret;
1735 }
1736 ai->type = DVD_AUTH_ESTABLISHED;
1737 break;
1738
1739
1740 case DVD_INVALIDATE_AGID:
1741 cgc.quiet = 1;
1742 cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1743 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1744 if ((ret = cdo->generic_packet(cdi, &cgc)))
1745 return ret;
1746 break;
1747
1748
1749 case DVD_LU_SEND_RPC_STATE:
1750 cd_dbg(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1751 setup_report_key(&cgc, 0, 8);
1752 memset(&rpc_state, 0, sizeof(rpc_state_t));
1753 cgc.buffer = (char *) &rpc_state;
1754
1755 if ((ret = cdo->generic_packet(cdi, &cgc)))
1756 return ret;
1757
1758 ai->lrpcs.type = rpc_state.type_code;
1759 ai->lrpcs.vra = rpc_state.vra;
1760 ai->lrpcs.ucca = rpc_state.ucca;
1761 ai->lrpcs.region_mask = rpc_state.region_mask;
1762 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1763 break;
1764
1765
1766 case DVD_HOST_SEND_RPC_STATE:
1767 cd_dbg(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1768 setup_send_key(&cgc, 0, 6);
1769 buf[1] = 6;
1770 buf[4] = ai->hrpcs.pdrc;
1771
1772 if ((ret = cdo->generic_packet(cdi, &cgc)))
1773 return ret;
1774 break;
1775
1776 default:
1777 cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1778 return -ENOTTY;
1779 }
1780
1781 return 0;
1782}
1783
1784static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s,
1785 struct packet_command *cgc)
1786{
1787 unsigned char buf[21], *base;
1788 struct dvd_layer *layer;
1789 const struct cdrom_device_ops *cdo = cdi->ops;
1790 int ret, layer_num = s->physical.layer_num;
1791
1792 if (layer_num >= DVD_LAYERS)
1793 return -EINVAL;
1794
1795 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
1796 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1797 cgc->cmd[6] = layer_num;
1798 cgc->cmd[7] = s->type;
1799 cgc->cmd[9] = cgc->buflen & 0xff;
1800
1801
1802
1803
1804 cgc->quiet = 1;
1805
1806 ret = cdo->generic_packet(cdi, cgc);
1807 if (ret)
1808 return ret;
1809
1810 base = &buf[4];
1811 layer = &s->physical.layer[layer_num];
1812
1813
1814
1815
1816
1817 memset(layer, 0, sizeof(*layer));
1818 layer->book_version = base[0] & 0xf;
1819 layer->book_type = base[0] >> 4;
1820 layer->min_rate = base[1] & 0xf;
1821 layer->disc_size = base[1] >> 4;
1822 layer->layer_type = base[2] & 0xf;
1823 layer->track_path = (base[2] >> 4) & 1;
1824 layer->nlayers = (base[2] >> 5) & 3;
1825 layer->track_density = base[3] & 0xf;
1826 layer->linear_density = base[3] >> 4;
1827 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1828 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1829 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1830 layer->bca = base[16] >> 7;
1831
1832 return 0;
1833}
1834
1835static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s,
1836 struct packet_command *cgc)
1837{
1838 int ret;
1839 u_char buf[8];
1840 const struct cdrom_device_ops *cdo = cdi->ops;
1841
1842 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
1843 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1844 cgc->cmd[6] = s->copyright.layer_num;
1845 cgc->cmd[7] = s->type;
1846 cgc->cmd[8] = cgc->buflen >> 8;
1847 cgc->cmd[9] = cgc->buflen & 0xff;
1848
1849 ret = cdo->generic_packet(cdi, cgc);
1850 if (ret)
1851 return ret;
1852
1853 s->copyright.cpst = buf[4];
1854 s->copyright.rmi = buf[5];
1855
1856 return 0;
1857}
1858
1859static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s,
1860 struct packet_command *cgc)
1861{
1862 int ret, size;
1863 u_char *buf;
1864 const struct cdrom_device_ops *cdo = cdi->ops;
1865
1866 size = sizeof(s->disckey.value) + 4;
1867
1868 buf = kmalloc(size, GFP_KERNEL);
1869 if (!buf)
1870 return -ENOMEM;
1871
1872 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1873 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1874 cgc->cmd[7] = s->type;
1875 cgc->cmd[8] = size >> 8;
1876 cgc->cmd[9] = size & 0xff;
1877 cgc->cmd[10] = s->disckey.agid << 6;
1878
1879 ret = cdo->generic_packet(cdi, cgc);
1880 if (!ret)
1881 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1882
1883 kfree(buf);
1884 return ret;
1885}
1886
1887static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s,
1888 struct packet_command *cgc)
1889{
1890 int ret, size = 4 + 188;
1891 u_char *buf;
1892 const struct cdrom_device_ops *cdo = cdi->ops;
1893
1894 buf = kmalloc(size, GFP_KERNEL);
1895 if (!buf)
1896 return -ENOMEM;
1897
1898 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1899 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1900 cgc->cmd[7] = s->type;
1901 cgc->cmd[9] = cgc->buflen & 0xff;
1902
1903 ret = cdo->generic_packet(cdi, cgc);
1904 if (ret)
1905 goto out;
1906
1907 s->bca.len = buf[0] << 8 | buf[1];
1908 if (s->bca.len < 12 || s->bca.len > 188) {
1909 cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n",
1910 s->bca.len);
1911 ret = -EIO;
1912 goto out;
1913 }
1914 memcpy(s->bca.value, &buf[4], s->bca.len);
1915 ret = 0;
1916out:
1917 kfree(buf);
1918 return ret;
1919}
1920
1921static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s,
1922 struct packet_command *cgc)
1923{
1924 int ret = 0, size;
1925 u_char *buf;
1926 const struct cdrom_device_ops *cdo = cdi->ops;
1927
1928 size = sizeof(s->manufact.value) + 4;
1929
1930 buf = kmalloc(size, GFP_KERNEL);
1931 if (!buf)
1932 return -ENOMEM;
1933
1934 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1935 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1936 cgc->cmd[7] = s->type;
1937 cgc->cmd[8] = size >> 8;
1938 cgc->cmd[9] = size & 0xff;
1939
1940 ret = cdo->generic_packet(cdi, cgc);
1941 if (ret)
1942 goto out;
1943
1944 s->manufact.len = buf[0] << 8 | buf[1];
1945 if (s->manufact.len < 0) {
1946 cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n",
1947 s->manufact.len);
1948 ret = -EIO;
1949 } else {
1950 if (s->manufact.len > 2048) {
1951 cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d): truncating to 2048\n",
1952 s->manufact.len);
1953 s->manufact.len = 2048;
1954 }
1955 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1956 }
1957
1958out:
1959 kfree(buf);
1960 return ret;
1961}
1962
1963static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s,
1964 struct packet_command *cgc)
1965{
1966 switch (s->type) {
1967 case DVD_STRUCT_PHYSICAL:
1968 return dvd_read_physical(cdi, s, cgc);
1969
1970 case DVD_STRUCT_COPYRIGHT:
1971 return dvd_read_copyright(cdi, s, cgc);
1972
1973 case DVD_STRUCT_DISCKEY:
1974 return dvd_read_disckey(cdi, s, cgc);
1975
1976 case DVD_STRUCT_BCA:
1977 return dvd_read_bca(cdi, s, cgc);
1978
1979 case DVD_STRUCT_MANUFACT:
1980 return dvd_read_manufact(cdi, s, cgc);
1981
1982 default:
1983 cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1984 s->type);
1985 return -EINVAL;
1986 }
1987}
1988
1989int cdrom_mode_sense(struct cdrom_device_info *cdi,
1990 struct packet_command *cgc,
1991 int page_code, int page_control)
1992{
1993 const struct cdrom_device_ops *cdo = cdi->ops;
1994
1995 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1996
1997 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1998 cgc->cmd[2] = page_code | (page_control << 6);
1999 cgc->cmd[7] = cgc->buflen >> 8;
2000 cgc->cmd[8] = cgc->buflen & 0xff;
2001 cgc->data_direction = CGC_DATA_READ;
2002 return cdo->generic_packet(cdi, cgc);
2003}
2004
2005int cdrom_mode_select(struct cdrom_device_info *cdi,
2006 struct packet_command *cgc)
2007{
2008 const struct cdrom_device_ops *cdo = cdi->ops;
2009
2010 memset(cgc->cmd, 0, sizeof(cgc->cmd));
2011 memset(cgc->buffer, 0, 2);
2012 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
2013 cgc->cmd[1] = 0x10;
2014 cgc->cmd[7] = cgc->buflen >> 8;
2015 cgc->cmd[8] = cgc->buflen & 0xff;
2016 cgc->data_direction = CGC_DATA_WRITE;
2017 return cdo->generic_packet(cdi, cgc);
2018}
2019
2020static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
2021 struct cdrom_subchnl *subchnl, int mcn)
2022{
2023 const struct cdrom_device_ops *cdo = cdi->ops;
2024 struct packet_command cgc;
2025 char buffer[32];
2026 int ret;
2027
2028 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
2029 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
2030 cgc.cmd[1] = subchnl->cdsc_format;
2031 cgc.cmd[2] = 0x40;
2032 cgc.cmd[3] = mcn ? 2 : 1;
2033 cgc.cmd[8] = 16;
2034
2035 if ((ret = cdo->generic_packet(cdi, &cgc)))
2036 return ret;
2037
2038 subchnl->cdsc_audiostatus = cgc.buffer[1];
2039 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
2040 subchnl->cdsc_trk = cgc.buffer[6];
2041 subchnl->cdsc_ind = cgc.buffer[7];
2042
2043 if (subchnl->cdsc_format == CDROM_LBA) {
2044 subchnl->cdsc_absaddr.lba = ((cgc.buffer[8] << 24) |
2045 (cgc.buffer[9] << 16) |
2046 (cgc.buffer[10] << 8) |
2047 (cgc.buffer[11]));
2048 subchnl->cdsc_reladdr.lba = ((cgc.buffer[12] << 24) |
2049 (cgc.buffer[13] << 16) |
2050 (cgc.buffer[14] << 8) |
2051 (cgc.buffer[15]));
2052 } else {
2053 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
2054 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
2055 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
2056 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
2057 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
2058 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
2059 }
2060
2061 return 0;
2062}
2063
2064
2065
2066
2067static int cdrom_read_cd(struct cdrom_device_info *cdi,
2068 struct packet_command *cgc, int lba,
2069 int blocksize, int nblocks)
2070{
2071 const struct cdrom_device_ops *cdo = cdi->ops;
2072
2073 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2074 cgc->cmd[0] = GPCMD_READ_10;
2075 cgc->cmd[2] = (lba >> 24) & 0xff;
2076 cgc->cmd[3] = (lba >> 16) & 0xff;
2077 cgc->cmd[4] = (lba >> 8) & 0xff;
2078 cgc->cmd[5] = lba & 0xff;
2079 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2080 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2081 cgc->cmd[8] = nblocks & 0xff;
2082 cgc->buflen = blocksize * nblocks;
2083 return cdo->generic_packet(cdi, cgc);
2084}
2085
2086
2087static int cdrom_read_block(struct cdrom_device_info *cdi,
2088 struct packet_command *cgc,
2089 int lba, int nblocks, int format, int blksize)
2090{
2091 const struct cdrom_device_ops *cdo = cdi->ops;
2092
2093 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2094 cgc->cmd[0] = GPCMD_READ_CD;
2095
2096 cgc->cmd[1] = format << 2;
2097
2098 cgc->cmd[2] = (lba >> 24) & 0xff;
2099 cgc->cmd[3] = (lba >> 16) & 0xff;
2100 cgc->cmd[4] = (lba >> 8) & 0xff;
2101 cgc->cmd[5] = lba & 0xff;
2102
2103 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2104 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2105 cgc->cmd[8] = nblocks & 0xff;
2106 cgc->buflen = blksize * nblocks;
2107
2108
2109 switch (blksize) {
2110 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2111 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2112 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2113 default : cgc->cmd[9] = 0x10;
2114 }
2115
2116 return cdo->generic_packet(cdi, cgc);
2117}
2118
2119static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2120 int lba, int nframes)
2121{
2122 struct packet_command cgc;
2123 int ret = 0;
2124 int nr;
2125
2126 cdi->last_sense = 0;
2127
2128 memset(&cgc, 0, sizeof(cgc));
2129
2130
2131
2132
2133 nr = nframes;
2134 do {
2135 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2136 if (cgc.buffer)
2137 break;
2138
2139 nr >>= 1;
2140 } while (nr);
2141
2142 if (!nr)
2143 return -ENOMEM;
2144
2145 cgc.data_direction = CGC_DATA_READ;
2146 while (nframes > 0) {
2147 if (nr > nframes)
2148 nr = nframes;
2149
2150 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2151 if (ret)
2152 break;
2153 if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2154 ret = -EFAULT;
2155 break;
2156 }
2157 ubuf += CD_FRAMESIZE_RAW * nr;
2158 nframes -= nr;
2159 lba += nr;
2160 }
2161 kfree(cgc.buffer);
2162 return ret;
2163}
2164
2165static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2166 int lba, int nframes)
2167{
2168 struct request_queue *q = cdi->disk->queue;
2169 struct request *rq;
2170 struct scsi_request *req;
2171 struct bio *bio;
2172 unsigned int len;
2173 int nr, ret = 0;
2174
2175 if (!q)
2176 return -ENXIO;
2177
2178 if (!blk_queue_scsi_passthrough(q)) {
2179 WARN_ONCE(true,
2180 "Attempt read CDDA info through a non-SCSI queue\n");
2181 return -EINVAL;
2182 }
2183
2184 cdi->last_sense = 0;
2185
2186 while (nframes) {
2187 nr = nframes;
2188 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2189 nr = 1;
2190 if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9))
2191 nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW;
2192
2193 len = nr * CD_FRAMESIZE_RAW;
2194
2195 rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL);
2196 if (IS_ERR(rq)) {
2197 ret = PTR_ERR(rq);
2198 break;
2199 }
2200 req = scsi_req(rq);
2201
2202 ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL);
2203 if (ret) {
2204 blk_put_request(rq);
2205 break;
2206 }
2207
2208 req->cmd[0] = GPCMD_READ_CD;
2209 req->cmd[1] = 1 << 2;
2210 req->cmd[2] = (lba >> 24) & 0xff;
2211 req->cmd[3] = (lba >> 16) & 0xff;
2212 req->cmd[4] = (lba >> 8) & 0xff;
2213 req->cmd[5] = lba & 0xff;
2214 req->cmd[6] = (nr >> 16) & 0xff;
2215 req->cmd[7] = (nr >> 8) & 0xff;
2216 req->cmd[8] = nr & 0xff;
2217 req->cmd[9] = 0xf8;
2218
2219 req->cmd_len = 12;
2220 rq->timeout = 60 * HZ;
2221 bio = rq->bio;
2222
2223 blk_execute_rq(q, cdi->disk, rq, 0);
2224 if (scsi_req(rq)->result) {
2225 struct request_sense *s = req->sense;
2226 ret = -EIO;
2227 cdi->last_sense = s->sense_key;
2228 }
2229
2230 if (blk_rq_unmap_user(bio))
2231 ret = -EFAULT;
2232 blk_put_request(rq);
2233
2234 if (ret)
2235 break;
2236
2237 nframes -= nr;
2238 lba += nr;
2239 ubuf += len;
2240 }
2241
2242 return ret;
2243}
2244
2245static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2246 int lba, int nframes)
2247{
2248 int ret;
2249
2250 if (cdi->cdda_method == CDDA_OLD)
2251 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2252
2253retry:
2254
2255
2256
2257 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2258 if (!ret || ret != -EIO)
2259 return ret;
2260
2261
2262
2263
2264
2265 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2266 pr_info("dropping to single frame dma\n");
2267 cdi->cdda_method = CDDA_BPC_SINGLE;
2268 goto retry;
2269 }
2270
2271
2272
2273
2274
2275
2276 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2277 return ret;
2278
2279 pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2280 cdi->cdda_method = CDDA_OLD;
2281 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2282}
2283
2284static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2285 void __user *argp)
2286{
2287 struct cdrom_multisession ms_info;
2288 u8 requested_format;
2289 int ret;
2290
2291 cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2292
2293 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2294 return -ENOSYS;
2295
2296 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2297 return -EFAULT;
2298
2299 requested_format = ms_info.addr_format;
2300 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2301 return -EINVAL;
2302 ms_info.addr_format = CDROM_LBA;
2303
2304 ret = cdi->ops->get_last_session(cdi, &ms_info);
2305 if (ret)
2306 return ret;
2307
2308 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2309
2310 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2311 return -EFAULT;
2312
2313 cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2314 return 0;
2315}
2316
2317static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2318{
2319 cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n");
2320
2321 if (!CDROM_CAN(CDC_OPEN_TRAY))
2322 return -ENOSYS;
2323 if (cdi->use_count != 1 || cdi->keeplocked)
2324 return -EBUSY;
2325 if (CDROM_CAN(CDC_LOCK)) {
2326 int ret = cdi->ops->lock_door(cdi, 0);
2327 if (ret)
2328 return ret;
2329 }
2330
2331 return cdi->ops->tray_move(cdi, 1);
2332}
2333
2334static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2335{
2336 cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2337
2338 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2339 return -ENOSYS;
2340 return cdi->ops->tray_move(cdi, 0);
2341}
2342
2343static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2344 unsigned long arg)
2345{
2346 cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2347
2348 if (!CDROM_CAN(CDC_OPEN_TRAY))
2349 return -ENOSYS;
2350 if (cdi->keeplocked)
2351 return -EBUSY;
2352
2353 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2354 if (arg)
2355 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2356 return 0;
2357}
2358
2359static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2360 unsigned long arg)
2361{
2362 struct cdrom_changer_info *info;
2363 int ret;
2364
2365 cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2366
2367 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2368 return -ENOSYS;
2369
2370
2371 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2372 return media_changed(cdi, 1);
2373
2374 if (arg >= cdi->capacity)
2375 return -EINVAL;
2376
2377 info = kmalloc(sizeof(*info), GFP_KERNEL);
2378 if (!info)
2379 return -ENOMEM;
2380
2381 ret = cdrom_read_mech_status(cdi, info);
2382 if (!ret)
2383 ret = info->slots[arg].change;
2384 kfree(info);
2385 return ret;
2386}
2387
2388static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2389 unsigned long arg)
2390{
2391 cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2392
2393
2394
2395
2396
2397 switch (arg) {
2398 case CDO_USE_FFLAGS:
2399 case CDO_CHECK_TYPE:
2400 break;
2401 case CDO_LOCK:
2402 if (!CDROM_CAN(CDC_LOCK))
2403 return -ENOSYS;
2404 break;
2405 case 0:
2406 return cdi->options;
2407
2408 default:
2409 if (!CDROM_CAN(arg))
2410 return -ENOSYS;
2411 }
2412 cdi->options |= (int) arg;
2413 return cdi->options;
2414}
2415
2416static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2417 unsigned long arg)
2418{
2419 cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2420
2421 cdi->options &= ~(int) arg;
2422 return cdi->options;
2423}
2424
2425static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2426 unsigned long arg)
2427{
2428 cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2429
2430 if (!CDROM_CAN(CDC_SELECT_SPEED))
2431 return -ENOSYS;
2432 return cdi->ops->select_speed(cdi, arg);
2433}
2434
2435static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2436 unsigned long arg)
2437{
2438 cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2439
2440 if (!CDROM_CAN(CDC_SELECT_DISC))
2441 return -ENOSYS;
2442
2443 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2444 if ((int)arg >= cdi->capacity)
2445 return -EINVAL;
2446 }
2447
2448
2449
2450
2451
2452
2453 if (cdi->ops->select_disc)
2454 return cdi->ops->select_disc(cdi, arg);
2455
2456 cd_dbg(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2457 return cdrom_select_disc(cdi, arg);
2458}
2459
2460static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2461 struct block_device *bdev)
2462{
2463 cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n");
2464
2465 if (!capable(CAP_SYS_ADMIN))
2466 return -EACCES;
2467 if (!CDROM_CAN(CDC_RESET))
2468 return -ENOSYS;
2469 invalidate_bdev(bdev);
2470 return cdi->ops->reset(cdi);
2471}
2472
2473static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2474 unsigned long arg)
2475{
2476 cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl");
2477
2478 if (!CDROM_CAN(CDC_LOCK))
2479 return -EDRIVE_CANT_DO_THIS;
2480
2481 cdi->keeplocked = arg ? 1 : 0;
2482
2483
2484
2485
2486
2487 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2488 return -EBUSY;
2489 return cdi->ops->lock_door(cdi, arg);
2490}
2491
2492static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2493 unsigned long arg)
2494{
2495 cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis");
2496
2497 if (!capable(CAP_SYS_ADMIN))
2498 return -EACCES;
2499 debug = arg ? 1 : 0;
2500 return debug;
2501}
2502
2503static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2504{
2505 cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2506 return (cdi->ops->capability & ~cdi->mask);
2507}
2508
2509
2510
2511
2512
2513
2514
2515static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2516 void __user *argp)
2517{
2518 struct cdrom_mcn mcn;
2519 int ret;
2520
2521 cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2522
2523 if (!(cdi->ops->capability & CDC_MCN))
2524 return -ENOSYS;
2525 ret = cdi->ops->get_mcn(cdi, &mcn);
2526 if (ret)
2527 return ret;
2528
2529 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2530 return -EFAULT;
2531 cd_dbg(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2532 return 0;
2533}
2534
2535static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2536 unsigned long arg)
2537{
2538 cd_dbg(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2539
2540 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2541 return -ENOSYS;
2542 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2543 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2544 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2545 if (((int)arg >= cdi->capacity))
2546 return -EINVAL;
2547 return cdrom_slot_status(cdi, arg);
2548}
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2568{
2569 tracktype tracks;
2570
2571 cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2572
2573 cdrom_count_tracks(cdi, &tracks);
2574 if (tracks.error)
2575 return tracks.error;
2576
2577
2578 if (tracks.audio > 0) {
2579 if (!tracks.data && !tracks.cdi && !tracks.xa)
2580 return CDS_AUDIO;
2581 else
2582 return CDS_MIXED;
2583 }
2584
2585 if (tracks.cdi > 0)
2586 return CDS_XA_2_2;
2587 if (tracks.xa > 0)
2588 return CDS_XA_2_1;
2589 if (tracks.data > 0)
2590 return CDS_DATA_1;
2591
2592
2593 cd_dbg(CD_WARNING, "This disc doesn't have any tracks I recognize!\n");
2594 return CDS_NO_INFO;
2595}
2596
2597static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2598{
2599 cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2600 return cdi->capacity;
2601}
2602
2603static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2604 void __user *argp)
2605{
2606 struct cdrom_subchnl q;
2607 u8 requested, back;
2608 int ret;
2609
2610
2611
2612 if (copy_from_user(&q, argp, sizeof(q)))
2613 return -EFAULT;
2614
2615 requested = q.cdsc_format;
2616 if (requested != CDROM_MSF && requested != CDROM_LBA)
2617 return -EINVAL;
2618 q.cdsc_format = CDROM_MSF;
2619
2620 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2621 if (ret)
2622 return ret;
2623
2624 back = q.cdsc_format;
2625 sanitize_format(&q.cdsc_absaddr, &back, requested);
2626 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2627
2628 if (copy_to_user(argp, &q, sizeof(q)))
2629 return -EFAULT;
2630
2631 return 0;
2632}
2633
2634static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2635 void __user *argp)
2636{
2637 struct cdrom_tochdr header;
2638 int ret;
2639
2640
2641
2642 if (copy_from_user(&header, argp, sizeof(header)))
2643 return -EFAULT;
2644
2645 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2646 if (ret)
2647 return ret;
2648
2649 if (copy_to_user(argp, &header, sizeof(header)))
2650 return -EFAULT;
2651
2652 return 0;
2653}
2654
2655static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2656 void __user *argp)
2657{
2658 struct cdrom_tocentry entry;
2659 u8 requested_format;
2660 int ret;
2661
2662
2663
2664 if (copy_from_user(&entry, argp, sizeof(entry)))
2665 return -EFAULT;
2666
2667 requested_format = entry.cdte_format;
2668 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2669 return -EINVAL;
2670
2671 entry.cdte_format = CDROM_MSF;
2672 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2673 if (ret)
2674 return ret;
2675 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2676
2677 if (copy_to_user(argp, &entry, sizeof(entry)))
2678 return -EFAULT;
2679
2680 return 0;
2681}
2682
2683static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2684 void __user *argp)
2685{
2686 struct cdrom_msf msf;
2687
2688 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2689
2690 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2691 return -ENOSYS;
2692 if (copy_from_user(&msf, argp, sizeof(msf)))
2693 return -EFAULT;
2694 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2695}
2696
2697static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2698 void __user *argp)
2699{
2700 struct cdrom_ti ti;
2701 int ret;
2702
2703 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2704
2705 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2706 return -ENOSYS;
2707 if (copy_from_user(&ti, argp, sizeof(ti)))
2708 return -EFAULT;
2709
2710 ret = check_for_audio_disc(cdi, cdi->ops);
2711 if (ret)
2712 return ret;
2713 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2714}
2715static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2716 void __user *argp)
2717{
2718 struct cdrom_volctrl volume;
2719
2720 cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2721
2722 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2723 return -ENOSYS;
2724 if (copy_from_user(&volume, argp, sizeof(volume)))
2725 return -EFAULT;
2726 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2727}
2728
2729static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2730 void __user *argp)
2731{
2732 struct cdrom_volctrl volume;
2733 int ret;
2734
2735 cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2736
2737 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2738 return -ENOSYS;
2739
2740 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2741 if (ret)
2742 return ret;
2743
2744 if (copy_to_user(argp, &volume, sizeof(volume)))
2745 return -EFAULT;
2746 return 0;
2747}
2748
2749static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2750 unsigned int cmd)
2751{
2752 int ret;
2753
2754 cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2755
2756 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2757 return -ENOSYS;
2758 ret = check_for_audio_disc(cdi, cdi->ops);
2759 if (ret)
2760 return ret;
2761 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2762}
2763
2764
2765
2766
2767
2768static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2769{
2770 const struct cdrom_device_ops *cdo = cdi->ops;
2771 struct packet_command cgc;
2772 struct modesel_head mh;
2773
2774 memset(&mh, 0, sizeof(mh));
2775 mh.block_desc_length = 0x08;
2776 mh.block_length_med = (size >> 8) & 0xff;
2777 mh.block_length_lo = size & 0xff;
2778
2779 memset(&cgc, 0, sizeof(cgc));
2780 cgc.cmd[0] = 0x15;
2781 cgc.cmd[1] = 1 << 4;
2782 cgc.cmd[4] = 12;
2783 cgc.buflen = sizeof(mh);
2784 cgc.buffer = (char *) &mh;
2785 cgc.data_direction = CGC_DATA_WRITE;
2786 mh.block_desc_length = 0x08;
2787 mh.block_length_med = (size >> 8) & 0xff;
2788 mh.block_length_lo = size & 0xff;
2789
2790 return cdo->generic_packet(cdi, &cgc);
2791}
2792
2793static int cdrom_get_track_info(struct cdrom_device_info *cdi,
2794 __u16 track, __u8 type, track_information *ti)
2795{
2796 const struct cdrom_device_ops *cdo = cdi->ops;
2797 struct packet_command cgc;
2798 int ret, buflen;
2799
2800 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
2801 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
2802 cgc.cmd[1] = type & 3;
2803 cgc.cmd[4] = (track & 0xff00) >> 8;
2804 cgc.cmd[5] = track & 0xff;
2805 cgc.cmd[8] = 8;
2806 cgc.quiet = 1;
2807
2808 ret = cdo->generic_packet(cdi, &cgc);
2809 if (ret)
2810 return ret;
2811
2812 buflen = be16_to_cpu(ti->track_information_length) +
2813 sizeof(ti->track_information_length);
2814
2815 if (buflen > sizeof(track_information))
2816 buflen = sizeof(track_information);
2817
2818 cgc.cmd[8] = cgc.buflen = buflen;
2819 ret = cdo->generic_packet(cdi, &cgc);
2820 if (ret)
2821 return ret;
2822
2823
2824 return buflen;
2825}
2826
2827
2828
2829int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
2830{
2831 struct cdrom_tocentry toc;
2832 disc_information di;
2833 track_information ti;
2834 __u32 last_track;
2835 int ret = -1, ti_size;
2836
2837 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2838 goto use_toc;
2839
2840 ret = cdrom_get_disc_info(cdi, &di);
2841 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
2842 + sizeof(di.last_track_lsb)))
2843 goto use_toc;
2844
2845
2846 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2847 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2848 if (ti_size < (int)offsetof(typeof(ti), track_start))
2849 goto use_toc;
2850
2851
2852 if (ti.blank) {
2853 if (last_track == 1)
2854 goto use_toc;
2855 last_track--;
2856 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2857 }
2858
2859 if (ti_size < (int)(offsetof(typeof(ti), track_size)
2860 + sizeof(ti.track_size)))
2861 goto use_toc;
2862
2863
2864 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
2865 + sizeof(ti.last_rec_address))) {
2866 *last_written = be32_to_cpu(ti.last_rec_address);
2867 } else {
2868
2869 *last_written = be32_to_cpu(ti.track_start) +
2870 be32_to_cpu(ti.track_size);
2871 if (ti.free_blocks)
2872 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
2873 }
2874 return 0;
2875
2876
2877
2878
2879
2880use_toc:
2881 toc.cdte_format = CDROM_MSF;
2882 toc.cdte_track = CDROM_LEADOUT;
2883 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
2884 return ret;
2885 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
2886 *last_written = toc.cdte_addr.lba;
2887 return 0;
2888}
2889
2890
2891static int cdrom_get_next_writable(struct cdrom_device_info *cdi,
2892 long *next_writable)
2893{
2894 disc_information di;
2895 track_information ti;
2896 __u16 last_track;
2897 int ret, ti_size;
2898
2899 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2900 goto use_last_written;
2901
2902 ret = cdrom_get_disc_info(cdi, &di);
2903 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
2904 + sizeof(di.last_track_lsb))
2905 goto use_last_written;
2906
2907
2908 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2909 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2910 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
2911 goto use_last_written;
2912
2913
2914 if (ti.blank) {
2915 if (last_track == 1)
2916 goto use_last_written;
2917 last_track--;
2918 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2919 if (ti_size < 0)
2920 goto use_last_written;
2921 }
2922
2923
2924 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
2925 + sizeof(ti.next_writable)) {
2926 *next_writable = be32_to_cpu(ti.next_writable);
2927 return 0;
2928 }
2929
2930use_last_written:
2931 ret = cdrom_get_last_written(cdi, next_writable);
2932 if (ret) {
2933 *next_writable = 0;
2934 return ret;
2935 } else {
2936 *next_writable += 7;
2937 return 0;
2938 }
2939}
2940
2941static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi,
2942 void __user *arg,
2943 struct packet_command *cgc,
2944 int cmd)
2945{
2946 struct request_sense sense;
2947 struct cdrom_msf msf;
2948 int blocksize = 0, format = 0, lba;
2949 int ret;
2950
2951 switch (cmd) {
2952 case CDROMREADRAW:
2953 blocksize = CD_FRAMESIZE_RAW;
2954 break;
2955 case CDROMREADMODE1:
2956 blocksize = CD_FRAMESIZE;
2957 format = 2;
2958 break;
2959 case CDROMREADMODE2:
2960 blocksize = CD_FRAMESIZE_RAW0;
2961 break;
2962 }
2963 if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
2964 return -EFAULT;
2965 lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0);
2966
2967 if (lba < 0)
2968 return -EINVAL;
2969
2970 cgc->buffer = kzalloc(blocksize, GFP_KERNEL);
2971 if (cgc->buffer == NULL)
2972 return -ENOMEM;
2973
2974 memset(&sense, 0, sizeof(sense));
2975 cgc->sense = &sense;
2976 cgc->data_direction = CGC_DATA_READ;
2977 ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize);
2978 if (ret && sense.sense_key == 0x05 &&
2979 sense.asc == 0x20 &&
2980 sense.ascq == 0x00) {
2981
2982
2983
2984
2985
2986 ret = cdrom_switch_blocksize(cdi, blocksize);
2987 if (ret)
2988 goto out;
2989 cgc->sense = NULL;
2990 ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1);
2991 ret |= cdrom_switch_blocksize(cdi, blocksize);
2992 }
2993 if (!ret && copy_to_user(arg, cgc->buffer, blocksize))
2994 ret = -EFAULT;
2995out:
2996 kfree(cgc->buffer);
2997 return ret;
2998}
2999
3000static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi,
3001 void __user *arg)
3002{
3003 struct cdrom_read_audio ra;
3004 int lba;
3005
3006 if (copy_from_user(&ra, (struct cdrom_read_audio __user *)arg,
3007 sizeof(ra)))
3008 return -EFAULT;
3009
3010 if (ra.addr_format == CDROM_MSF)
3011 lba = msf_to_lba(ra.addr.msf.minute,
3012 ra.addr.msf.second,
3013 ra.addr.msf.frame);
3014 else if (ra.addr_format == CDROM_LBA)
3015 lba = ra.addr.lba;
3016 else
3017 return -EINVAL;
3018
3019
3020 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
3021 return -EINVAL;
3022
3023 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
3024}
3025
3026static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi,
3027 void __user *arg)
3028{
3029 int ret;
3030 struct cdrom_subchnl q;
3031 u_char requested, back;
3032 if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q)))
3033 return -EFAULT;
3034 requested = q.cdsc_format;
3035 if (!((requested == CDROM_MSF) ||
3036 (requested == CDROM_LBA)))
3037 return -EINVAL;
3038
3039 ret = cdrom_read_subchannel(cdi, &q, 0);
3040 if (ret)
3041 return ret;
3042 back = q.cdsc_format;
3043 sanitize_format(&q.cdsc_absaddr, &back, requested);
3044 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
3045 if (copy_to_user((struct cdrom_subchnl __user *)arg, &q, sizeof(q)))
3046 return -EFAULT;
3047
3048 return 0;
3049}
3050
3051static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi,
3052 void __user *arg,
3053 struct packet_command *cgc)
3054{
3055 const struct cdrom_device_ops *cdo = cdi->ops;
3056 struct cdrom_msf msf;
3057 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
3058 if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
3059 return -EFAULT;
3060 cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF;
3061 cgc->cmd[3] = msf.cdmsf_min0;
3062 cgc->cmd[4] = msf.cdmsf_sec0;
3063 cgc->cmd[5] = msf.cdmsf_frame0;
3064 cgc->cmd[6] = msf.cdmsf_min1;
3065 cgc->cmd[7] = msf.cdmsf_sec1;
3066 cgc->cmd[8] = msf.cdmsf_frame1;
3067 cgc->data_direction = CGC_DATA_NONE;
3068 return cdo->generic_packet(cdi, cgc);
3069}
3070
3071static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi,
3072 void __user *arg,
3073 struct packet_command *cgc)
3074{
3075 const struct cdrom_device_ops *cdo = cdi->ops;
3076 struct cdrom_blk blk;
3077 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
3078 if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk)))
3079 return -EFAULT;
3080 cgc->cmd[0] = GPCMD_PLAY_AUDIO_10;
3081 cgc->cmd[2] = (blk.from >> 24) & 0xff;
3082 cgc->cmd[3] = (blk.from >> 16) & 0xff;
3083 cgc->cmd[4] = (blk.from >> 8) & 0xff;
3084 cgc->cmd[5] = blk.from & 0xff;
3085 cgc->cmd[7] = (blk.len >> 8) & 0xff;
3086 cgc->cmd[8] = blk.len & 0xff;
3087 cgc->data_direction = CGC_DATA_NONE;
3088 return cdo->generic_packet(cdi, cgc);
3089}
3090
3091static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi,
3092 void __user *arg,
3093 struct packet_command *cgc,
3094 unsigned int cmd)
3095{
3096 struct cdrom_volctrl volctrl;
3097 unsigned char buffer[32];
3098 char mask[sizeof(buffer)];
3099 unsigned short offset;
3100 int ret;
3101
3102 cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n");
3103
3104 if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg,
3105 sizeof(volctrl)))
3106 return -EFAULT;
3107
3108 cgc->buffer = buffer;
3109 cgc->buflen = 24;
3110 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0);
3111 if (ret)
3112 return ret;
3113
3114
3115
3116
3117
3118 offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6));
3119
3120 if (offset + 16 > sizeof(buffer))
3121 return -E2BIG;
3122
3123 if (offset + 16 > cgc->buflen) {
3124 cgc->buflen = offset + 16;
3125 ret = cdrom_mode_sense(cdi, cgc,
3126 GPMODE_AUDIO_CTL_PAGE, 0);
3127 if (ret)
3128 return ret;
3129 }
3130
3131
3132 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
3133 buffer[offset + 1] < 14)
3134 return -EINVAL;
3135
3136
3137
3138 if (cmd == CDROMVOLREAD) {
3139 volctrl.channel0 = buffer[offset+9];
3140 volctrl.channel1 = buffer[offset+11];
3141 volctrl.channel2 = buffer[offset+13];
3142 volctrl.channel3 = buffer[offset+15];
3143 if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl,
3144 sizeof(volctrl)))
3145 return -EFAULT;
3146 return 0;
3147 }
3148
3149
3150 cgc->buffer = mask;
3151 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1);
3152 if (ret)
3153 return ret;
3154
3155 buffer[offset + 9] = volctrl.channel0 & mask[offset + 9];
3156 buffer[offset + 11] = volctrl.channel1 & mask[offset + 11];
3157 buffer[offset + 13] = volctrl.channel2 & mask[offset + 13];
3158 buffer[offset + 15] = volctrl.channel3 & mask[offset + 15];
3159
3160
3161 cgc->buffer = buffer + offset - 8;
3162 memset(cgc->buffer, 0, 8);
3163 return cdrom_mode_select(cdi, cgc);
3164}
3165
3166static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi,
3167 struct packet_command *cgc,
3168 int cmd)
3169{
3170 const struct cdrom_device_ops *cdo = cdi->ops;
3171 cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
3172 cgc->cmd[0] = GPCMD_START_STOP_UNIT;
3173 cgc->cmd[1] = 1;
3174 cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
3175 cgc->data_direction = CGC_DATA_NONE;
3176 return cdo->generic_packet(cdi, cgc);
3177}
3178
3179static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi,
3180 struct packet_command *cgc,
3181 int cmd)
3182{
3183 const struct cdrom_device_ops *cdo = cdi->ops;
3184 cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3185 cgc->cmd[0] = GPCMD_PAUSE_RESUME;
3186 cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3187 cgc->data_direction = CGC_DATA_NONE;
3188 return cdo->generic_packet(cdi, cgc);
3189}
3190
3191static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi,
3192 void __user *arg,
3193 struct packet_command *cgc)
3194{
3195 int ret;
3196 dvd_struct *s;
3197 int size = sizeof(dvd_struct);
3198
3199 if (!CDROM_CAN(CDC_DVD))
3200 return -ENOSYS;
3201
3202 s = memdup_user(arg, size);
3203 if (IS_ERR(s))
3204 return PTR_ERR(s);
3205
3206 cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3207
3208 ret = dvd_read_struct(cdi, s, cgc);
3209 if (ret)
3210 goto out;
3211
3212 if (copy_to_user(arg, s, size))
3213 ret = -EFAULT;
3214out:
3215 kfree(s);
3216 return ret;
3217}
3218
3219static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi,
3220 void __user *arg)
3221{
3222 int ret;
3223 dvd_authinfo ai;
3224 if (!CDROM_CAN(CDC_DVD))
3225 return -ENOSYS;
3226 cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n");
3227 if (copy_from_user(&ai, (dvd_authinfo __user *)arg, sizeof(ai)))
3228 return -EFAULT;
3229 ret = dvd_do_auth(cdi, &ai);
3230 if (ret)
3231 return ret;
3232 if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai)))
3233 return -EFAULT;
3234 return 0;
3235}
3236
3237static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi,
3238 void __user *arg)
3239{
3240 int ret;
3241 long next = 0;
3242 cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3243 ret = cdrom_get_next_writable(cdi, &next);
3244 if (ret)
3245 return ret;
3246 if (copy_to_user((long __user *)arg, &next, sizeof(next)))
3247 return -EFAULT;
3248 return 0;
3249}
3250
3251static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi,
3252 void __user *arg)
3253{
3254 int ret;
3255 long last = 0;
3256 cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3257 ret = cdrom_get_last_written(cdi, &last);
3258 if (ret)
3259 return ret;
3260 if (copy_to_user((long __user *)arg, &last, sizeof(last)))
3261 return -EFAULT;
3262 return 0;
3263}
3264
3265static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
3266 unsigned long arg)
3267{
3268 struct packet_command cgc;
3269 void __user *userptr = (void __user *)arg;
3270
3271 memset(&cgc, 0, sizeof(cgc));
3272
3273
3274
3275 switch (cmd) {
3276 case CDROMREADRAW:
3277 case CDROMREADMODE1:
3278 case CDROMREADMODE2:
3279 return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd);
3280 case CDROMREADAUDIO:
3281 return mmc_ioctl_cdrom_read_audio(cdi, userptr);
3282 case CDROMSUBCHNL:
3283 return mmc_ioctl_cdrom_subchannel(cdi, userptr);
3284 case CDROMPLAYMSF:
3285 return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc);
3286 case CDROMPLAYBLK:
3287 return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc);
3288 case CDROMVOLCTRL:
3289 case CDROMVOLREAD:
3290 return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd);
3291 case CDROMSTART:
3292 case CDROMSTOP:
3293 return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd);
3294 case CDROMPAUSE:
3295 case CDROMRESUME:
3296 return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd);
3297 case DVD_READ_STRUCT:
3298 return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc);
3299 case DVD_AUTH:
3300 return mmc_ioctl_dvd_auth(cdi, userptr);
3301 case CDROM_NEXT_WRITABLE:
3302 return mmc_ioctl_cdrom_next_writable(cdi, userptr);
3303 case CDROM_LAST_WRITTEN:
3304 return mmc_ioctl_cdrom_last_written(cdi, userptr);
3305 }
3306
3307 return -ENOTTY;
3308}
3309
3310
3311
3312
3313
3314
3315int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
3316 fmode_t mode, unsigned int cmd, unsigned long arg)
3317{
3318 void __user *argp = (void __user *)arg;
3319 int ret;
3320
3321
3322
3323
3324 ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
3325 if (ret != -ENOTTY)
3326 return ret;
3327
3328 switch (cmd) {
3329 case CDROMMULTISESSION:
3330 return cdrom_ioctl_multisession(cdi, argp);
3331 case CDROMEJECT:
3332 return cdrom_ioctl_eject(cdi);
3333 case CDROMCLOSETRAY:
3334 return cdrom_ioctl_closetray(cdi);
3335 case CDROMEJECT_SW:
3336 return cdrom_ioctl_eject_sw(cdi, arg);
3337 case CDROM_MEDIA_CHANGED:
3338 return cdrom_ioctl_media_changed(cdi, arg);
3339 case CDROM_SET_OPTIONS:
3340 return cdrom_ioctl_set_options(cdi, arg);
3341 case CDROM_CLEAR_OPTIONS:
3342 return cdrom_ioctl_clear_options(cdi, arg);
3343 case CDROM_SELECT_SPEED:
3344 return cdrom_ioctl_select_speed(cdi, arg);
3345 case CDROM_SELECT_DISC:
3346 return cdrom_ioctl_select_disc(cdi, arg);
3347 case CDROMRESET:
3348 return cdrom_ioctl_reset(cdi, bdev);
3349 case CDROM_LOCKDOOR:
3350 return cdrom_ioctl_lock_door(cdi, arg);
3351 case CDROM_DEBUG:
3352 return cdrom_ioctl_debug(cdi, arg);
3353 case CDROM_GET_CAPABILITY:
3354 return cdrom_ioctl_get_capability(cdi);
3355 case CDROM_GET_MCN:
3356 return cdrom_ioctl_get_mcn(cdi, argp);
3357 case CDROM_DRIVE_STATUS:
3358 return cdrom_ioctl_drive_status(cdi, arg);
3359 case CDROM_DISC_STATUS:
3360 return cdrom_ioctl_disc_status(cdi);
3361 case CDROM_CHANGER_NSLOTS:
3362 return cdrom_ioctl_changer_nslots(cdi);
3363 }
3364
3365
3366
3367
3368
3369
3370
3371 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
3372 ret = mmc_ioctl(cdi, cmd, arg);
3373 if (ret != -ENOTTY)
3374 return ret;
3375 }
3376
3377
3378
3379
3380
3381
3382 switch (cmd) {
3383 case CDROMSUBCHNL:
3384 return cdrom_ioctl_get_subchnl(cdi, argp);
3385 case CDROMREADTOCHDR:
3386 return cdrom_ioctl_read_tochdr(cdi, argp);
3387 case CDROMREADTOCENTRY:
3388 return cdrom_ioctl_read_tocentry(cdi, argp);
3389 case CDROMPLAYMSF:
3390 return cdrom_ioctl_play_msf(cdi, argp);
3391 case CDROMPLAYTRKIND:
3392 return cdrom_ioctl_play_trkind(cdi, argp);
3393 case CDROMVOLCTRL:
3394 return cdrom_ioctl_volctrl(cdi, argp);
3395 case CDROMVOLREAD:
3396 return cdrom_ioctl_volread(cdi, argp);
3397 case CDROMSTART:
3398 case CDROMSTOP:
3399 case CDROMPAUSE:
3400 case CDROMRESUME:
3401 return cdrom_ioctl_audioctl(cdi, cmd);
3402 }
3403
3404 return -ENOSYS;
3405}
3406
3407EXPORT_SYMBOL(cdrom_get_last_written);
3408EXPORT_SYMBOL(register_cdrom);
3409EXPORT_SYMBOL(unregister_cdrom);
3410EXPORT_SYMBOL(cdrom_open);
3411EXPORT_SYMBOL(cdrom_release);
3412EXPORT_SYMBOL(cdrom_ioctl);
3413EXPORT_SYMBOL(cdrom_media_changed);
3414EXPORT_SYMBOL(cdrom_number_of_slots);
3415EXPORT_SYMBOL(cdrom_mode_select);
3416EXPORT_SYMBOL(cdrom_mode_sense);
3417EXPORT_SYMBOL(init_cdrom_command);
3418EXPORT_SYMBOL(cdrom_get_media_event);
3419
3420#ifdef CONFIG_SYSCTL
3421
3422#define CDROM_STR_SIZE 1000
3423
3424static struct cdrom_sysctl_settings {
3425 char info[CDROM_STR_SIZE];
3426 int autoclose;
3427 int autoeject;
3428 int debug;
3429 int lock;
3430 int check;
3431} cdrom_sysctl_settings;
3432
3433enum cdrom_print_option {
3434 CTL_NAME,
3435 CTL_SPEED,
3436 CTL_SLOTS,
3437 CTL_CAPABILITY
3438};
3439
3440static int cdrom_print_info(const char *header, int val, char *info,
3441 int *pos, enum cdrom_print_option option)
3442{
3443 const int max_size = sizeof(cdrom_sysctl_settings.info);
3444 struct cdrom_device_info *cdi;
3445 int ret;
3446
3447 ret = scnprintf(info + *pos, max_size - *pos, header);
3448 if (!ret)
3449 return 1;
3450
3451 *pos += ret;
3452
3453 list_for_each_entry(cdi, &cdrom_list, list) {
3454 switch (option) {
3455 case CTL_NAME:
3456 ret = scnprintf(info + *pos, max_size - *pos,
3457 "\t%s", cdi->name);
3458 break;
3459 case CTL_SPEED:
3460 ret = scnprintf(info + *pos, max_size - *pos,
3461 "\t%d", cdi->speed);
3462 break;
3463 case CTL_SLOTS:
3464 ret = scnprintf(info + *pos, max_size - *pos,
3465 "\t%d", cdi->capacity);
3466 break;
3467 case CTL_CAPABILITY:
3468 ret = scnprintf(info + *pos, max_size - *pos,
3469 "\t%d", CDROM_CAN(val) != 0);
3470 break;
3471 default:
3472 pr_info("invalid option%d\n", option);
3473 return 1;
3474 }
3475 if (!ret)
3476 return 1;
3477 *pos += ret;
3478 }
3479
3480 return 0;
3481}
3482
3483static int cdrom_sysctl_info(struct ctl_table *ctl, int write,
3484 void __user *buffer, size_t *lenp, loff_t *ppos)
3485{
3486 int pos;
3487 char *info = cdrom_sysctl_settings.info;
3488 const int max_size = sizeof(cdrom_sysctl_settings.info);
3489
3490 if (!*lenp || (*ppos && !write)) {
3491 *lenp = 0;
3492 return 0;
3493 }
3494
3495 mutex_lock(&cdrom_mutex);
3496
3497 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3498
3499 if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
3500 goto done;
3501 if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
3502 goto done;
3503 if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
3504 goto done;
3505 if (cdrom_print_info("\nCan close tray:\t",
3506 CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
3507 goto done;
3508 if (cdrom_print_info("\nCan open tray:\t",
3509 CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
3510 goto done;
3511 if (cdrom_print_info("\nCan lock tray:\t",
3512 CDC_LOCK, info, &pos, CTL_CAPABILITY))
3513 goto done;
3514 if (cdrom_print_info("\nCan change speed:",
3515 CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
3516 goto done;
3517 if (cdrom_print_info("\nCan select disk:",
3518 CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
3519 goto done;
3520 if (cdrom_print_info("\nCan read multisession:",
3521 CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
3522 goto done;
3523 if (cdrom_print_info("\nCan read MCN:\t",
3524 CDC_MCN, info, &pos, CTL_CAPABILITY))
3525 goto done;
3526 if (cdrom_print_info("\nReports media changed:",
3527 CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
3528 goto done;
3529 if (cdrom_print_info("\nCan play audio:\t",
3530 CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
3531 goto done;
3532 if (cdrom_print_info("\nCan write CD-R:\t",
3533 CDC_CD_R, info, &pos, CTL_CAPABILITY))
3534 goto done;
3535 if (cdrom_print_info("\nCan write CD-RW:",
3536 CDC_CD_RW, info, &pos, CTL_CAPABILITY))
3537 goto done;
3538 if (cdrom_print_info("\nCan read DVD:\t",
3539 CDC_DVD, info, &pos, CTL_CAPABILITY))
3540 goto done;
3541 if (cdrom_print_info("\nCan write DVD-R:",
3542 CDC_DVD_R, info, &pos, CTL_CAPABILITY))
3543 goto done;
3544 if (cdrom_print_info("\nCan write DVD-RAM:",
3545 CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
3546 goto done;
3547 if (cdrom_print_info("\nCan read MRW:\t",
3548 CDC_MRW, info, &pos, CTL_CAPABILITY))
3549 goto done;
3550 if (cdrom_print_info("\nCan write MRW:\t",
3551 CDC_MRW_W, info, &pos, CTL_CAPABILITY))
3552 goto done;
3553 if (cdrom_print_info("\nCan write RAM:\t",
3554 CDC_RAM, info, &pos, CTL_CAPABILITY))
3555 goto done;
3556 if (!scnprintf(info + pos, max_size - pos, "\n\n"))
3557 goto done;
3558doit:
3559 mutex_unlock(&cdrom_mutex);
3560 return proc_dostring(ctl, write, buffer, lenp, ppos);
3561done:
3562 pr_info("info buffer too small\n");
3563 goto doit;
3564}
3565
3566
3567
3568
3569
3570static void cdrom_update_settings(void)
3571{
3572 struct cdrom_device_info *cdi;
3573
3574 mutex_lock(&cdrom_mutex);
3575 list_for_each_entry(cdi, &cdrom_list, list) {
3576 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3577 cdi->options |= CDO_AUTO_CLOSE;
3578 else if (!autoclose)
3579 cdi->options &= ~CDO_AUTO_CLOSE;
3580 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3581 cdi->options |= CDO_AUTO_EJECT;
3582 else if (!autoeject)
3583 cdi->options &= ~CDO_AUTO_EJECT;
3584 if (lockdoor && CDROM_CAN(CDC_LOCK))
3585 cdi->options |= CDO_LOCK;
3586 else if (!lockdoor)
3587 cdi->options &= ~CDO_LOCK;
3588 if (check_media_type)
3589 cdi->options |= CDO_CHECK_TYPE;
3590 else
3591 cdi->options &= ~CDO_CHECK_TYPE;
3592 }
3593 mutex_unlock(&cdrom_mutex);
3594}
3595
3596static int cdrom_sysctl_handler(struct ctl_table *ctl, int write,
3597 void __user *buffer, size_t *lenp, loff_t *ppos)
3598{
3599 int ret;
3600
3601 ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
3602
3603 if (write) {
3604
3605
3606 autoclose = !!cdrom_sysctl_settings.autoclose;
3607 autoeject = !!cdrom_sysctl_settings.autoeject;
3608 debug = !!cdrom_sysctl_settings.debug;
3609 lockdoor = !!cdrom_sysctl_settings.lock;
3610 check_media_type = !!cdrom_sysctl_settings.check;
3611
3612
3613
3614
3615 cdrom_update_settings();
3616 }
3617
3618 return ret;
3619}
3620
3621
3622static struct ctl_table cdrom_table[] = {
3623 {
3624 .procname = "info",
3625 .data = &cdrom_sysctl_settings.info,
3626 .maxlen = CDROM_STR_SIZE,
3627 .mode = 0444,
3628 .proc_handler = cdrom_sysctl_info,
3629 },
3630 {
3631 .procname = "autoclose",
3632 .data = &cdrom_sysctl_settings.autoclose,
3633 .maxlen = sizeof(int),
3634 .mode = 0644,
3635 .proc_handler = cdrom_sysctl_handler,
3636 },
3637 {
3638 .procname = "autoeject",
3639 .data = &cdrom_sysctl_settings.autoeject,
3640 .maxlen = sizeof(int),
3641 .mode = 0644,
3642 .proc_handler = cdrom_sysctl_handler,
3643 },
3644 {
3645 .procname = "debug",
3646 .data = &cdrom_sysctl_settings.debug,
3647 .maxlen = sizeof(int),
3648 .mode = 0644,
3649 .proc_handler = cdrom_sysctl_handler,
3650 },
3651 {
3652 .procname = "lock",
3653 .data = &cdrom_sysctl_settings.lock,
3654 .maxlen = sizeof(int),
3655 .mode = 0644,
3656 .proc_handler = cdrom_sysctl_handler,
3657 },
3658 {
3659 .procname = "check_media",
3660 .data = &cdrom_sysctl_settings.check,
3661 .maxlen = sizeof(int),
3662 .mode = 0644,
3663 .proc_handler = cdrom_sysctl_handler
3664 },
3665 { }
3666};
3667
3668static struct ctl_table cdrom_cdrom_table[] = {
3669 {
3670 .procname = "cdrom",
3671 .maxlen = 0,
3672 .mode = 0555,
3673 .child = cdrom_table,
3674 },
3675 { }
3676};
3677
3678
3679static struct ctl_table cdrom_root_table[] = {
3680 {
3681 .procname = "dev",
3682 .maxlen = 0,
3683 .mode = 0555,
3684 .child = cdrom_cdrom_table,
3685 },
3686 { }
3687};
3688static struct ctl_table_header *cdrom_sysctl_header;
3689
3690static void cdrom_sysctl_register(void)
3691{
3692 static int initialized;
3693
3694 if (initialized == 1)
3695 return;
3696
3697 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
3698
3699
3700 cdrom_sysctl_settings.autoclose = autoclose;
3701 cdrom_sysctl_settings.autoeject = autoeject;
3702 cdrom_sysctl_settings.debug = debug;
3703 cdrom_sysctl_settings.lock = lockdoor;
3704 cdrom_sysctl_settings.check = check_media_type;
3705
3706 initialized = 1;
3707}
3708
3709static void cdrom_sysctl_unregister(void)
3710{
3711 if (cdrom_sysctl_header)
3712 unregister_sysctl_table(cdrom_sysctl_header);
3713}
3714
3715#else
3716
3717static void cdrom_sysctl_register(void)
3718{
3719}
3720
3721static void cdrom_sysctl_unregister(void)
3722{
3723}
3724
3725#endif
3726
3727static int __init cdrom_init(void)
3728{
3729 cdrom_sysctl_register();
3730
3731 return 0;
3732}
3733
3734static void __exit cdrom_exit(void)
3735{
3736 pr_info("Uniform CD-ROM driver unloaded\n");
3737 cdrom_sysctl_unregister();
3738}
3739
3740module_init(cdrom_init);
3741module_exit(cdrom_exit);
3742MODULE_LICENSE("GPL");
3743