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