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Diffstat (limited to 'windhoek/cdrom/cdrom.c')
| -rw-r--r-- | windhoek/cdrom/cdrom.c | 3676 |
1 files changed, 0 insertions, 3676 deletions
diff --git a/windhoek/cdrom/cdrom.c b/windhoek/cdrom/cdrom.c deleted file mode 100644 index cceace61..00000000 --- a/windhoek/cdrom/cdrom.c +++ /dev/null @@ -1,3676 +0,0 @@ -/* linux/drivers/cdrom/cdrom.c - Copyright (c) 1996, 1997 David A. van Leeuwen. - Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org> - Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk> - - May be copied or modified under the terms of the GNU General Public - License. See linux/COPYING for more information. - - Uniform CD-ROM driver for Linux. - See Documentation/cdrom/cdrom-standard.tex for usage information. - - The routines in the file provide a uniform interface between the - software that uses CD-ROMs and the various low-level drivers that - actually talk to the hardware. Suggestions are welcome. - Patches that work are more welcome though. ;-) - - To Do List: - ---------------------------------- - - -- Modify sysctl/proc interface. I plan on having one directory per - drive, with entries for outputing general drive information, and sysctl - based tunable parameters such as whether the tray should auto-close for - that drive. Suggestions (or patches) for this welcome! - - - Revision History - ---------------------------------- - 1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl> - -- Initial version by David A. van Leeuwen. I don't have a detailed - changelog for the 1.x series, David? - -2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org> - -- New maintainer! As David A. van Leeuwen has been too busy to activly - maintain and improve this driver, I am now carrying on the torch. If - you have a problem with this driver, please feel free to contact me. - - -- Added (rudimentary) sysctl interface. I realize this is really weak - right now, and is _very_ badly implemented. It will be improved... - - -- Modified CDROM_DISC_STATUS so that it is now incorporated into - the Uniform CD-ROM driver via the cdrom_count_tracks function. - The cdrom_count_tracks function helps resolve some of the false - assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check - for the correct media type when mounting or playing audio from a CD. - - -- Remove the calls to verify_area and only use the copy_from_user and - copy_to_user stuff, since these calls now provide their own memory - checking with the 2.1.x kernels. - - -- Major update to return codes so that errors from low-level drivers - are passed on through (thanks to Gerd Knorr for pointing out this - problem). - - -- Made it so if a function isn't implemented in a low-level driver, - ENOSYS is now returned instead of EINVAL. - - -- Simplified some complex logic so that the source code is easier to read. - - -- Other stuff I probably forgot to mention (lots of changes). - -2.01 to 2.11 Dec 1997-Jan 1998 - -- TO-DO! Write changelogs for 2.01 to 2.12. - -2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org> - -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that - copy_*_user does not return EFAULT on error, but instead returns the number - of bytes not copied. I was returning whatever non-zero stuff came back from - the copy_*_user functions directly, which would result in strange errors. - -2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org> - -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed - of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing - this out and providing a simple fix. - -- Fixed the procfs-unload-module bug with the fill_inode procfs callback. - thanks to Andrea Arcangeli - -- Fixed it so that the /proc entry now also shows up when cdrom is - compiled into the kernel. Before it only worked when loaded as a module. - - 2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org> - -- Fixed a bug in cdrom_media_changed and handling of reporting that - the media had changed for devices that _don't_ implement media_changed. - Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug. - -- Made a few things more pedanticly correct. - -2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk> - -- New maintainers! Erik was too busy to continue the work on the driver, - so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk> - will do their best to follow in his footsteps - - 2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk> - -- Check if drive is capable of doing what we ask before blindly changing - cdi->options in various ioctl. - -- Added version to proc entry. - - 2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk> - -- Fixed an error in open_for_data where we would sometimes not return - the correct error value. Thanks Huba Gaspar <huba@softcell.hu>. - -- Fixed module usage count - usage was based on /proc/sys/dev - instead of /proc/sys/dev/cdrom. This could lead to an oops when other - modules had entries in dev. Feb 02 - real bug was in sysctl.c where - dev would be removed even though it was used. cdrom.c just illuminated - that bug. - - 2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk> - -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has - been "rewritten" because capabilities and options aren't in sync. They - should be... - -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way. - -- Added CDROM_RESET ioctl. - -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly. - -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs - from parsing /proc/sys/dev/cdrom/info. - - 2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk> - -- Check capability mask from low level driver when counting tracks as - per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>. - - 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk> - -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of - CDC_CLOSE_TRAY. - -- proc info didn't mask against capabilities mask. - - 3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk> - -- Unified audio ioctl handling across CD-ROM drivers. A lot of the - code was duplicated before. Drives that support the generic packet - interface are now being fed packets from here instead. - -- First attempt at adding support for MMC2 commands - for DVD and - CD-R(W) drives. Only the DVD parts are in now - the interface used is - the same as for the audio ioctls. - -- ioctl cleanups. if a drive couldn't play audio, it didn't get - a change to perform device specific ioctls as well. - -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities. - -- Put in sysctl files for autoclose, autoeject, check_media, debug, - and lock. - -- /proc/sys/dev/cdrom/info has been updated to also contain info about - CD-Rx and DVD capabilities. - -- Now default to checking media type. - -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for - doing this anyway, with the generic_packet addition. - - 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk> - -- Fix up the sysctl handling so that the option flags get set - correctly. - -- Fix up ioctl handling so the device specific ones actually get - called :). - - 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk> - -- Fixed volume control on SCSI drives (or others with longer audio - page). - -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath - <andrewtv@usa.net> for telling me and for having defined the various - DVD structures and ioctls in the first place! He designed the original - DVD patches for ide-cd and while I rearranged and unified them, the - interface is still the same. - - 3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk> - -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only - CDROMREADTOCENTRY and CDROMREADTOCHDR are left. - -- Moved the CDROMREADxxx ioctls in here. - -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls - and exported functions. - -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands - to now read GPCMD_ for the new generic packet interface. All low level - drivers are updated as well. - -- Various other cleanups. - - 3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk> - -- Fixed a couple of possible memory leaks (if an operation failed and - we didn't free the buffer before returning the error). - -- Integrated Uniform CD Changer handling from Richard Sharman - <rsharman@pobox.com>. - -- Defined CD_DVD and CD_CHANGER log levels. - -- Fixed the CDROMREADxxx ioctls. - -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few - drives supported it. We lose the index part, however. - -- Small modifications to accommodate opens of /dev/hdc1, required - for ide-cd to handle multisession discs. - -- Export cdrom_mode_sense and cdrom_mode_select. - -- init_cdrom_command() for setting up a cgc command. - - 3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk> - -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually - impossible to send the drive data in a sensible way. - -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and - dvd_read_manufact. - -- Added setup of write mode for packet writing. - -- Fixed CDDA ripping with cdda2wav - accept much larger requests of - number of frames and split the reads in blocks of 8. - - 3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk> - -- Added support for changing the region of DVD drives. - -- Added sense data to generic command. - - 3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de> - -- Do same "read header length" trick in cdrom_get_disc_info() as - we do in cdrom_get_track_info() -- some drive don't obey specs and - fail if they can't supply the full Mt Fuji size table. - -- Deleted stuff related to setting up write modes. It has a different - home now. - -- Clear header length in mode_select unconditionally. - -- Removed the register_disk() that was added, not needed here. - - 3.08 May 1, 2000 - Jens Axboe <axboe@suse.de> - -- Fix direction flag in setup_send_key and setup_report_key. This - gave some SCSI adapters problems. - -- Always return -EROFS for write opens - -- Convert to module_init/module_exit style init and remove some - of the #ifdef MODULE stuff - -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid, - DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and - dvd_do_auth passed uninitialized data to drive because init_cdrom_command - did not clear a 0 sized buffer. - - 3.09 May 12, 2000 - Jens Axboe <axboe@suse.de> - -- Fix Video-CD on SCSI drives that don't support READ_CD command. In - that case switch block size and issue plain READ_10 again, then switch - back. - - 3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de> - -- Fix volume control on CD's - old SCSI-II drives now use their own - code, as doing MODE6 stuff in here is really not my intention. - -- Use READ_DISC_INFO for more reliable end-of-disc. - - 3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de> - -- Fix bug in getting rpc phase 2 region info. - -- Reinstate "correct" CDROMPLAYTRKIND - - 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de> - -- Use quiet bit on packet commands not known to work - - 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de> - -- Various fixes and lots of cleanups not listed :-) - -- Locking fixes - -- Mt Rainier support - -- DVD-RAM write open fixes - - Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov - <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units. - - Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW - 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se> - --------------------------------------------------------------------------*/ - -#define REVISION "Revision: 3.20" -#define VERSION "Id: cdrom.c 3.20 2003/12/17" - -/* I use an error-log mask to give fine grain control over the type of - messages dumped to the system logs. The available masks include: */ -#define CD_NOTHING 0x0 -#define CD_WARNING 0x1 -#define CD_REG_UNREG 0x2 -#define CD_DO_IOCTL 0x4 -#define CD_OPEN 0x8 -#define CD_CLOSE 0x10 -#define CD_COUNT_TRACKS 0x20 -#define CD_CHANGER 0x40 -#define CD_DVD 0x80 - -/* Define this to remove _all_ the debugging messages */ -/* #define ERRLOGMASK CD_NOTHING */ -#define ERRLOGMASK CD_WARNING -/* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */ -/* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */ - -#include <linux/module.h> -#include <linux/fs.h> -#include <linux/buffer_head.h> -#include <linux/major.h> -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/cdrom.h> -#include <linux/sysctl.h> -#include <linux/proc_fs.h> -#include <linux/blkpg.h> -#include <linux/init.h> -#include <linux/fcntl.h> -#include <linux/blkdev.h> -#include <linux/times.h> - -#include <asm/uaccess.h> - -/* used to tell the module to turn on full debugging messages */ -static int debug; -/* used to keep tray locked at all times */ -static int keeplocked; -/* default compatibility mode */ -static int autoclose=1; -static int autoeject; -static int lockdoor = 1; -/* will we ever get to use this... sigh. */ -static int check_media_type; -/* automatically restart mrw format */ -static int mrw_format_restart = 1; -module_param(debug, bool, 0); -module_param(autoclose, bool, 0); -module_param(autoeject, bool, 0); -module_param(lockdoor, bool, 0); -module_param(check_media_type, bool, 0); -module_param(mrw_format_restart, bool, 0); - -static DEFINE_MUTEX(cdrom_mutex); - -static const char *mrw_format_status[] = { - "not mrw", - "bgformat inactive", - "bgformat active", - "mrw complete", -}; - -static const char *mrw_address_space[] = { "DMA", "GAA" }; - -#if (ERRLOGMASK!=CD_NOTHING) -#define cdinfo(type, fmt, args...) \ - if ((ERRLOGMASK & type) || debug==1 ) \ - printk(KERN_INFO "cdrom: " fmt, ## args) -#else -#define cdinfo(type, fmt, args...) -#endif - -/* These are used to simplify getting data in from and back to user land */ -#define IOCTL_IN(arg, type, in) \ - if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \ - return -EFAULT; - -#define IOCTL_OUT(arg, type, out) \ - if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \ - return -EFAULT; - -/* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in - a lot of places. This macro makes the code more clear. */ -#define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) - -/* used in the audio ioctls */ -#define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret - -/* - * Another popular OS uses 7 seconds as the hard timeout for default - * commands, so it is a good choice for us as well. - */ -#define CDROM_DEF_TIMEOUT (7 * HZ) - -/* Not-exported routines. */ -static int open_for_data(struct cdrom_device_info * cdi); -static int check_for_audio_disc(struct cdrom_device_info * cdi, - struct cdrom_device_ops * cdo); -static void sanitize_format(union cdrom_addr *addr, - u_char * curr, u_char requested); -static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, - unsigned long arg); - -int cdrom_get_last_written(struct cdrom_device_info *, long *); -static int cdrom_get_next_writable(struct cdrom_device_info *, long *); -static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*); - -static int cdrom_mrw_exit(struct cdrom_device_info *cdi); - -static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di); - -static void cdrom_sysctl_register(void); - -static LIST_HEAD(cdrom_list); - -static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, - struct packet_command *cgc) -{ - if (cgc->sense) { - cgc->sense->sense_key = 0x05; - cgc->sense->asc = 0x20; - cgc->sense->ascq = 0x00; - } - - cgc->stat = -EIO; - return -EIO; -} - -/* This macro makes sure we don't have to check on cdrom_device_ops - * existence in the run-time routines below. Change_capability is a - * hack to have the capability flags defined const, while we can still - * change it here without gcc complaining at every line. - */ -#define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits) - -int register_cdrom(struct cdrom_device_info *cdi) -{ - static char banner_printed; - struct cdrom_device_ops *cdo = cdi->ops; - int *change_capability = (int *)&cdo->capability; /* hack */ - - cdinfo(CD_OPEN, "entering register_cdrom\n"); - - if (cdo->open == NULL || cdo->release == NULL) - return -EINVAL; - if (!banner_printed) { - printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n"); - banner_printed = 1; - cdrom_sysctl_register(); - } - - ENSURE(drive_status, CDC_DRIVE_STATUS ); - ENSURE(media_changed, CDC_MEDIA_CHANGED); - ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); - ENSURE(lock_door, CDC_LOCK); - ENSURE(select_speed, CDC_SELECT_SPEED); - ENSURE(get_last_session, CDC_MULTI_SESSION); - ENSURE(get_mcn, CDC_MCN); - ENSURE(reset, CDC_RESET); - ENSURE(generic_packet, CDC_GENERIC_PACKET); - cdi->mc_flags = 0; - cdo->n_minors = 0; - cdi->options = CDO_USE_FFLAGS; - - if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY)) - cdi->options |= (int) CDO_AUTO_CLOSE; - if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY)) - cdi->options |= (int) CDO_AUTO_EJECT; - if (lockdoor==1) - cdi->options |= (int) CDO_LOCK; - if (check_media_type==1) - cdi->options |= (int) CDO_CHECK_TYPE; - - if (CDROM_CAN(CDC_MRW_W)) - cdi->exit = cdrom_mrw_exit; - - if (cdi->disk) - cdi->cdda_method = CDDA_BPC_FULL; - else - cdi->cdda_method = CDDA_OLD; - - if (!cdo->generic_packet) - cdo->generic_packet = cdrom_dummy_generic_packet; - - cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); - mutex_lock(&cdrom_mutex); - list_add(&cdi->list, &cdrom_list); - mutex_unlock(&cdrom_mutex); - return 0; -} -#undef ENSURE - -void unregister_cdrom(struct cdrom_device_info *cdi) -{ - cdinfo(CD_OPEN, "entering unregister_cdrom\n"); - - mutex_lock(&cdrom_mutex); - list_del(&cdi->list); - mutex_unlock(&cdrom_mutex); - - if (cdi->exit) - cdi->exit(cdi); - - cdi->ops->n_minors--; - cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); -} - -int cdrom_get_media_event(struct cdrom_device_info *cdi, - struct media_event_desc *med) -{ - struct packet_command cgc; - unsigned char buffer[8]; - struct event_header *eh = (struct event_header *) buffer; - - init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); - cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; - cgc.cmd[1] = 1; /* IMMED */ - cgc.cmd[4] = 1 << 4; /* media event */ - cgc.cmd[8] = sizeof(buffer); - cgc.quiet = 1; - - if (cdi->ops->generic_packet(cdi, &cgc)) - return 1; - - if (be16_to_cpu(eh->data_len) < sizeof(*med)) - return 1; - - if (eh->nea || eh->notification_class != 0x4) - return 1; - - memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); - return 0; -} - -/* - * the first prototypes used 0x2c as the page code for the mrw mode page, - * subsequently this was changed to 0x03. probe the one used by this drive - */ -static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) -{ - struct packet_command cgc; - char buffer[16]; - - init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); - - cgc.timeout = HZ; - cgc.quiet = 1; - - if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { - cdi->mrw_mode_page = MRW_MODE_PC; - return 0; - } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { - cdi->mrw_mode_page = MRW_MODE_PC_PRE1; - return 0; - } - - return 1; -} - -static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) -{ - struct packet_command cgc; - struct mrw_feature_desc *mfd; - unsigned char buffer[16]; - int ret; - - *write = 0; - - init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); - - cgc.cmd[0] = GPCMD_GET_CONFIGURATION; - cgc.cmd[3] = CDF_MRW; - cgc.cmd[8] = sizeof(buffer); - cgc.quiet = 1; - - if ((ret = cdi->ops->generic_packet(cdi, &cgc))) - return ret; - - mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; - if (be16_to_cpu(mfd->feature_code) != CDF_MRW) - return 1; - *write = mfd->write; - - if ((ret = cdrom_mrw_probe_pc(cdi))) { - *write = 0; - return ret; - } - - return 0; -} - -static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) -{ - struct packet_command cgc; - unsigned char buffer[12]; - int ret; - - printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : ""); - - /* - * FmtData bit set (bit 4), format type is 1 - */ - init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); - cgc.cmd[0] = GPCMD_FORMAT_UNIT; - cgc.cmd[1] = (1 << 4) | 1; - - cgc.timeout = 5 * 60 * HZ; - - /* - * 4 byte format list header, 8 byte format list descriptor - */ - buffer[1] = 1 << 1; - buffer[3] = 8; - - /* - * nr_blocks field - */ - buffer[4] = 0xff; - buffer[5] = 0xff; - buffer[6] = 0xff; - buffer[7] = 0xff; - - buffer[8] = 0x24 << 2; - buffer[11] = cont; - - ret = cdi->ops->generic_packet(cdi, &cgc); - if (ret) - printk(KERN_INFO "cdrom: bgformat failed\n"); - - return ret; -} - -static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) -{ - struct packet_command cgc; - - init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); - cgc.cmd[0] = GPCMD_CLOSE_TRACK; - - /* - * Session = 1, Track = 0 - */ - cgc.cmd[1] = !!immed; - cgc.cmd[2] = 1 << 1; - - cgc.timeout = 5 * 60 * HZ; - - return cdi->ops->generic_packet(cdi, &cgc); -} - -static int cdrom_flush_cache(struct cdrom_device_info *cdi) -{ - struct packet_command cgc; - - init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); - cgc.cmd[0] = GPCMD_FLUSH_CACHE; - - cgc.timeout = 5 * 60 * HZ; - - return cdi->ops->generic_packet(cdi, &cgc); -} - -static int cdrom_mrw_exit(struct cdrom_device_info *cdi) -{ - disc_information di; - int ret; - - ret = cdrom_get_disc_info(cdi, &di); - if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) - return 1; - - ret = 0; - if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { - printk(KERN_INFO "cdrom: issuing MRW back ground " - "format suspend\n"); - ret = cdrom_mrw_bgformat_susp(cdi, 0); - } - - if (!ret && cdi->media_written) - ret = cdrom_flush_cache(cdi); - - return ret; -} - -static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) -{ - struct packet_command cgc; - struct mode_page_header *mph; - char buffer[16]; - int ret, offset, size; - - init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); - - cgc.buffer = buffer; - cgc.buflen = sizeof(buffer); - - if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0))) - return ret; - - mph = (struct mode_page_header *) buffer; - offset = be16_to_cpu(mph->desc_length); - size = be16_to_cpu(mph->mode_data_length) + 2; - - buffer[offset + 3] = space; - cgc.buflen = size; - - if ((ret = cdrom_mode_select(cdi, &cgc))) - return ret; - - printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]); - return 0; -} - -static int cdrom_get_random_writable(struct cdrom_device_info *cdi, - struct rwrt_feature_desc *rfd) -{ - struct packet_command cgc; - char buffer[24]; - int ret; - - init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); - - cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ - cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ - cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ - cgc.quiet = 1; - - if ((ret = cdi->ops->generic_packet(cdi, &cgc))) - return ret; - - memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); - return 0; -} - -static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) -{ - struct packet_command cgc; - char buffer[16]; - __be16 *feature_code; - int ret; - - init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); - - cgc.cmd[0] = GPCMD_GET_CONFIGURATION; - cgc.cmd[3] = CDF_HWDM; - cgc.cmd[8] = sizeof(buffer); - cgc.quiet = 1; - - if ((ret = cdi->ops->generic_packet(cdi, &cgc))) - return ret; - - feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; - if (be16_to_cpu(*feature_code) == CDF_HWDM) - return 0; - - return 1; -} - - -static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) -{ - struct rwrt_feature_desc rfd; - int ret; - - *write = 0; - - if ((ret = cdrom_get_random_writable(cdi, &rfd))) - return ret; - - if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) - *write = 1; - - return 0; -} - -static int cdrom_media_erasable(struct cdrom_device_info *cdi) -{ - disc_information di; - int ret; - - ret = cdrom_get_disc_info(cdi, &di); - if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) - return -1; - - return di.erasable; -} - -/* - * FIXME: check RO bit - */ -static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) -{ - int ret = cdrom_media_erasable(cdi); - - /* - * allow writable open if media info read worked and media is - * erasable, _or_ if it fails since not all drives support it - */ - if (!ret) - return 1; - - return 0; -} - -static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) -{ - disc_information di; - int ret; - - /* - * always reset to DMA lba space on open - */ - if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { - printk(KERN_ERR "cdrom: failed setting lba address space\n"); - return 1; - } - - ret = cdrom_get_disc_info(cdi, &di); - if (ret < 0 || ret < offsetof(typeof(di),disc_type)) - return 1; - - if (!di.erasable) - return 1; - - /* - * mrw_status - * 0 - not MRW formatted - * 1 - MRW bgformat started, but not running or complete - * 2 - MRW bgformat in progress - * 3 - MRW formatting complete - */ - ret = 0; - printk(KERN_INFO "cdrom open: mrw_status '%s'\n", - mrw_format_status[di.mrw_status]); - if (!di.mrw_status) - ret = 1; - else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && - mrw_format_restart) - ret = cdrom_mrw_bgformat(cdi, 1); - - return ret; -} - -static int mo_open_write(struct cdrom_device_info *cdi) -{ - struct packet_command cgc; - char buffer[255]; - int ret; - - init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); - cgc.quiet = 1; - - /* - * obtain write protect information as per - * drivers/scsi/sd.c:sd_read_write_protect_flag - */ - - ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); - if (ret) - ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); - if (ret) { - cgc.buflen = 255; - ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); - } - - /* drive gave us no info, let the user go ahead */ - if (ret) - return 0; - - return buffer[3] & 0x80; -} - -static int cdrom_ram_open_write(struct cdrom_device_info *cdi) -{ - struct rwrt_feature_desc rfd; - int ret; - - if ((ret = cdrom_has_defect_mgt(cdi))) - return ret; - - if ((ret = cdrom_get_random_writable(cdi, &rfd))) - return ret; - else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) - ret = !rfd.curr; - - cdinfo(CD_OPEN, "can open for random write\n"); - return ret; -} - -static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) -{ - struct packet_command cgc; - char buffer[32]; - int ret, mmc3_profile; - - init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); - - cgc.cmd[0] = GPCMD_GET_CONFIGURATION; - cgc.cmd[1] = 0; - cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ - cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ - cgc.quiet = 1; - - if ((ret = cdi->ops->generic_packet(cdi, &cgc))) - mmc3_profile = 0xffff; - else - mmc3_profile = (buffer[6] << 8) | buffer[7]; - - cdi->mmc3_profile = mmc3_profile; -} - -static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) -{ - switch (cdi->mmc3_profile) { - case 0x12: /* DVD-RAM */ - case 0x1A: /* DVD+RW */ - return 0; - default: - return 1; - } -} - -/* - * returns 0 for ok to open write, non-0 to disallow - */ -static int cdrom_open_write(struct cdrom_device_info *cdi) -{ - int mrw, mrw_write, ram_write; - int ret = 1; - - mrw = 0; - if (!cdrom_is_mrw(cdi, &mrw_write)) - mrw = 1; - - if (CDROM_CAN(CDC_MO_DRIVE)) - ram_write = 1; - else - (void) cdrom_is_random_writable(cdi, &ram_write); - - if (mrw) - cdi->mask &= ~CDC_MRW; - else - cdi->mask |= CDC_MRW; - - if (mrw_write) - cdi->mask &= ~CDC_MRW_W; - else - cdi->mask |= CDC_MRW_W; - - if (ram_write) - cdi->mask &= ~CDC_RAM; - else - cdi->mask |= CDC_RAM; - - if (CDROM_CAN(CDC_MRW_W)) - ret = cdrom_mrw_open_write(cdi); - else if (CDROM_CAN(CDC_DVD_RAM)) - ret = cdrom_dvdram_open_write(cdi); - else if (CDROM_CAN(CDC_RAM) && - !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE)) - ret = cdrom_ram_open_write(cdi); - else if (CDROM_CAN(CDC_MO_DRIVE)) - ret = mo_open_write(cdi); - else if (!cdrom_is_dvd_rw(cdi)) - ret = 0; - - return ret; -} - -static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) -{ - struct packet_command cgc; - - if (cdi->mmc3_profile != 0x1a) { - cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); - return; - } - - if (!cdi->media_written) { - cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); - return; - } - - printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n", - cdi->name); - - init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); - cgc.cmd[0] = GPCMD_FLUSH_CACHE; - cgc.timeout = 30*HZ; - cdi->ops->generic_packet(cdi, &cgc); - - init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); - cgc.cmd[0] = GPCMD_CLOSE_TRACK; - cgc.timeout = 3000*HZ; - cgc.quiet = 1; - cdi->ops->generic_packet(cdi, &cgc); - - init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); - cgc.cmd[0] = GPCMD_CLOSE_TRACK; - cgc.cmd[2] = 2; /* Close session */ - cgc.quiet = 1; - cgc.timeout = 3000*HZ; - cdi->ops->generic_packet(cdi, &cgc); - - cdi->media_written = 0; -} - -static int cdrom_close_write(struct cdrom_device_info *cdi) -{ -#if 0 - return cdrom_flush_cache(cdi); -#else - return 0; -#endif -} - -/* We use the open-option O_NONBLOCK to indicate that the - * purpose of opening is only for subsequent ioctl() calls; no device - * integrity checks are performed. - * - * We hope that all cd-player programs will adopt this convention. It - * is in their own interest: device control becomes a lot easier - * this way. - */ -int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t mode) -{ - int ret; - - cdinfo(CD_OPEN, "entering cdrom_open\n"); - - /* if this was a O_NONBLOCK open and we should honor the flags, - * do a quick open without drive/disc integrity checks. */ - cdi->use_count++; - if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) { - ret = cdi->ops->open(cdi, 1); - } else { - ret = open_for_data(cdi); - if (ret) - goto err; - cdrom_mmc3_profile(cdi); - if (mode & FMODE_WRITE) { - ret = -EROFS; - if (cdrom_open_write(cdi)) - goto err_release; - if (!CDROM_CAN(CDC_RAM)) - goto err_release; - ret = 0; - cdi->media_written = 0; - } - } - - if (ret) - goto err; - - cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", - cdi->name, cdi->use_count); - /* Do this on open. Don't wait for mount, because they might - not be mounting, but opening with O_NONBLOCK */ - check_disk_change(bdev); - return 0; -err_release: - if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { - cdi->ops->lock_door(cdi, 0); - cdinfo(CD_OPEN, "door unlocked.\n"); - } - cdi->ops->release(cdi); -err: - cdi->use_count--; - return ret; -} - -static -int open_for_data(struct cdrom_device_info * cdi) -{ - int ret; - struct cdrom_device_ops *cdo = cdi->ops; - tracktype tracks; - cdinfo(CD_OPEN, "entering open_for_data\n"); - /* Check if the driver can report drive status. If it can, we - can do clever things. If it can't, well, we at least tried! */ - if (cdo->drive_status != NULL) { - ret = cdo->drive_status(cdi, CDSL_CURRENT); - cdinfo(CD_OPEN, "drive_status=%d\n", ret); - if (ret == CDS_TRAY_OPEN) { - cdinfo(CD_OPEN, "the tray is open...\n"); - /* can/may i close it? */ - if (CDROM_CAN(CDC_CLOSE_TRAY) && - cdi->options & CDO_AUTO_CLOSE) { - cdinfo(CD_OPEN, "trying to close the tray.\n"); - ret=cdo->tray_move(cdi,0); - if (ret) { - cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n"); - /* Ignore the error from the low - level driver. We don't care why it - couldn't close the tray. We only care - that there is no disc in the drive, - since that is the _REAL_ problem here.*/ - ret=-ENOMEDIUM; - goto clean_up_and_return; - } - } else { - cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n"); - ret=-ENOMEDIUM; - goto clean_up_and_return; - } - /* Ok, the door should be closed now.. Check again */ - ret = cdo->drive_status(cdi, CDSL_CURRENT); - if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { - cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); - cdinfo(CD_OPEN, "tray might not contain a medium.\n"); - ret=-ENOMEDIUM; - goto clean_up_and_return; - } - cdinfo(CD_OPEN, "the tray is now closed.\n"); - } - /* the door should be closed now, check for the disc */ - ret = cdo->drive_status(cdi, CDSL_CURRENT); - if (ret!=CDS_DISC_OK) { - ret = -ENOMEDIUM; - goto clean_up_and_return; - } - } - cdrom_count_tracks(cdi, &tracks); - if (tracks.error == CDS_NO_DISC) { - cdinfo(CD_OPEN, "bummer. no disc.\n"); - ret=-ENOMEDIUM; - goto clean_up_and_return; - } - /* CD-Players which don't use O_NONBLOCK, workman - * for example, need bit CDO_CHECK_TYPE cleared! */ - if (tracks.data==0) { - if (cdi->options & CDO_CHECK_TYPE) { - /* give people a warning shot, now that CDO_CHECK_TYPE - is the default case! */ - cdinfo(CD_OPEN, "bummer. wrong media type.\n"); - cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", - (unsigned int)task_pid_nr(current)); - ret=-EMEDIUMTYPE; - goto clean_up_and_return; - } - else { - cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n"); - } - } - - cdinfo(CD_OPEN, "all seems well, opening the device.\n"); - - /* all seems well, we can open the device */ - ret = cdo->open(cdi, 0); /* open for data */ - cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret); - /* After all this careful checking, we shouldn't have problems - opening the device, but we don't want the device locked if - this somehow fails... */ - if (ret) { - cdinfo(CD_OPEN, "open device failed.\n"); - goto clean_up_and_return; - } - if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { - cdo->lock_door(cdi, 1); - cdinfo(CD_OPEN, "door locked.\n"); - } - cdinfo(CD_OPEN, "device opened successfully.\n"); - return ret; - - /* Something failed. Try to unlock the drive, because some drivers - (notably ide-cd) lock the drive after every command. This produced - a nasty bug where after mount failed, the drive would remain locked! - This ensures that the drive gets unlocked after a mount fails. This - is a goto to avoid bloating the driver with redundant code. */ -clean_up_and_return: - cdinfo(CD_OPEN, "open failed.\n"); - if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { - cdo->lock_door(cdi, 0); - cdinfo(CD_OPEN, "door unlocked.\n"); - } - return ret; -} - -/* This code is similar to that in open_for_data. The routine is called - whenever an audio play operation is requested. -*/ -static int check_for_audio_disc(struct cdrom_device_info * cdi, - struct cdrom_device_ops * cdo) -{ - int ret; - tracktype tracks; - cdinfo(CD_OPEN, "entering check_for_audio_disc\n"); - if (!(cdi->options & CDO_CHECK_TYPE)) - return 0; - if (cdo->drive_status != NULL) { - ret = cdo->drive_status(cdi, CDSL_CURRENT); - cdinfo(CD_OPEN, "drive_status=%d\n", ret); - if (ret == CDS_TRAY_OPEN) { - cdinfo(CD_OPEN, "the tray is open...\n"); - /* can/may i close it? */ - if (CDROM_CAN(CDC_CLOSE_TRAY) && - cdi->options & CDO_AUTO_CLOSE) { - cdinfo(CD_OPEN, "trying to close the tray.\n"); - ret=cdo->tray_move(cdi,0); - if (ret) { - cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n"); - /* Ignore the error from the low - level driver. We don't care why it - couldn't close the tray. We only care - that there is no disc in the drive, - since that is the _REAL_ problem here.*/ - return -ENOMEDIUM; - } - } else { - cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n"); - return -ENOMEDIUM; - } - /* Ok, the door should be closed now.. Check again */ - ret = cdo->drive_status(cdi, CDSL_CURRENT); - if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { - cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); - return -ENOMEDIUM; - } - if (ret!=CDS_DISC_OK) { - cdinfo(CD_OPEN, "bummer. disc isn't ready.\n"); - return -EIO; - } - cdinfo(CD_OPEN, "the tray is now closed.\n"); - } - } - cdrom_count_tracks(cdi, &tracks); - if (tracks.error) - return(tracks.error); - - if (tracks.audio==0) - return -EMEDIUMTYPE; - - return 0; -} - -void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) -{ - struct cdrom_device_ops *cdo = cdi->ops; - int opened_for_data; - - cdinfo(CD_CLOSE, "entering cdrom_release\n"); - - if (cdi->use_count > 0) - cdi->use_count--; - - if (cdi->use_count == 0) { - cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name); - cdrom_dvd_rw_close_write(cdi); - - if ((cdo->capability & CDC_LOCK) && !keeplocked) { - cdinfo(CD_CLOSE, "Unlocking door!\n"); - cdo->lock_door(cdi, 0); - } - } - - opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || - !(mode & FMODE_NDELAY); - - /* - * flush cache on last write release - */ - if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) - cdrom_close_write(cdi); - - cdo->release(cdi); - if (cdi->use_count == 0) { /* last process that closes dev*/ - if (opened_for_data && - cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) - cdo->tray_move(cdi, 1); - } -} - -static int cdrom_read_mech_status(struct cdrom_device_info *cdi, - struct cdrom_changer_info *buf) -{ - struct packet_command cgc; - struct cdrom_device_ops *cdo = cdi->ops; - int length; - - /* - * Sanyo changer isn't spec compliant (doesn't use regular change - * LOAD_UNLOAD command, and it doesn't implement the mech status - * command below - */ - if (cdi->sanyo_slot) { - buf->hdr.nslots = 3; - buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; - for (length = 0; length < 3; length++) { - buf->slots[length].disc_present = 1; - buf->slots[length].change = 0; - } - return 0; - } - - length = sizeof(struct cdrom_mechstat_header) + - cdi->capacity * sizeof(struct cdrom_slot); - - init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); - cgc.cmd[0] = GPCMD_MECHANISM_STATUS; - cgc.cmd[8] = (length >> 8) & 0xff; - cgc.cmd[9] = length & 0xff; - return cdo->generic_packet(cdi, &cgc); -} - -static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) -{ - struct cdrom_changer_info *info; - int ret; - - cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n"); - if (cdi->sanyo_slot) - return CDS_NO_INFO; - - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - if ((ret = cdrom_read_mech_status(cdi, info))) - goto out_free; - - if (info->slots[slot].disc_present) - ret = CDS_DISC_OK; - else - ret = CDS_NO_DISC; - -out_free: - kfree(info); - return ret; -} - -/* Return the number of slots for an ATAPI/SCSI cdrom, - * return 1 if not a changer. - */ -int cdrom_number_of_slots(struct cdrom_device_info *cdi) -{ - int status; - int nslots = 1; - struct cdrom_changer_info *info; - - cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n"); - /* cdrom_read_mech_status requires a valid value for capacity: */ - cdi->capacity = 0; - - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - if ((status = cdrom_read_mech_status(cdi, info)) == 0) - nslots = info->hdr.nslots; - - kfree(info); - return nslots; -} - - -/* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ -static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) -{ - struct packet_command cgc; - - cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n"); - if (cdi->sanyo_slot && slot < 0) - return 0; - - init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); - cgc.cmd[0] = GPCMD_LOAD_UNLOAD; - cgc.cmd[4] = 2 + (slot >= 0); - cgc.cmd[8] = slot; - cgc.timeout = 60 * HZ; - - /* The Sanyo 3 CD changer uses byte 7 of the - GPCMD_TEST_UNIT_READY to command to switch CDs instead of - using the GPCMD_LOAD_UNLOAD opcode. */ - if (cdi->sanyo_slot && -1 < slot) { - cgc.cmd[0] = GPCMD_TEST_UNIT_READY; - cgc.cmd[7] = slot; - cgc.cmd[4] = cgc.cmd[8] = 0; - cdi->sanyo_slot = slot ? slot : 3; - } - - return cdi->ops->generic_packet(cdi, &cgc); -} - -static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) -{ - struct cdrom_changer_info *info; - int curslot; - int ret; - - cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n"); - if (!CDROM_CAN(CDC_SELECT_DISC)) - return -EDRIVE_CANT_DO_THIS; - - (void) cdi->ops->media_changed(cdi, slot); - - if (slot == CDSL_NONE) { - /* set media changed bits, on both queues */ - cdi->mc_flags = 0x3; - return cdrom_load_unload(cdi, -1); - } - - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - if ((ret = cdrom_read_mech_status(cdi, info))) { - kfree(info); - return ret; - } - - curslot = info->hdr.curslot; - kfree(info); - - if (cdi->use_count > 1 || keeplocked) { - if (slot == CDSL_CURRENT) { - return curslot; - } else { - return -EBUSY; - } - } - - /* Specifying CDSL_CURRENT will attempt to load the currnet slot, - which is useful if it had been previously unloaded. - Whether it can or not, it returns the current slot. - Similarly, if slot happens to be the current one, we still - try and load it. */ - if (slot == CDSL_CURRENT) - slot = curslot; - - /* set media changed bits on both queues */ - cdi->mc_flags = 0x3; - if ((ret = cdrom_load_unload(cdi, slot))) - return ret; - - return slot; -} - -/* We want to make media_changed accessible to the user through an - * ioctl. The main problem now is that we must double-buffer the - * low-level implementation, to assure that the VFS and the user both - * see a medium change once. - */ - -static -int media_changed(struct cdrom_device_info *cdi, int queue) -{ - unsigned int mask = (1 << (queue & 1)); - int ret = !!(cdi->mc_flags & mask); - - if (!CDROM_CAN(CDC_MEDIA_CHANGED)) - return ret; - /* changed since last call? */ - if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) { - cdi->mc_flags = 0x3; /* set bit on both queues */ - ret |= 1; - cdi->media_written = 0; - } - cdi->mc_flags &= ~mask; /* clear bit */ - return ret; -} - -int cdrom_media_changed(struct cdrom_device_info *cdi) -{ - /* This talks to the VFS, which doesn't like errors - just 1 or 0. - * Returning "0" is always safe (media hasn't been changed). Do that - * if the low-level cdrom driver dosn't support media changed. */ - if (cdi == NULL || cdi->ops->media_changed == NULL) - return 0; - if (!CDROM_CAN(CDC_MEDIA_CHANGED)) - return 0; - return media_changed(cdi, 0); -} - -/* badly broken, I know. Is due for a fixup anytime. */ -static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks) -{ - struct cdrom_tochdr header; - struct cdrom_tocentry entry; - int ret, i; - tracks->data=0; - tracks->audio=0; - tracks->cdi=0; - tracks->xa=0; - tracks->error=0; - cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); - /* Grab the TOC header so we can see how many tracks there are */ - if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) { - if (ret == -ENOMEDIUM) - tracks->error = CDS_NO_DISC; - else - tracks->error = CDS_NO_INFO; - return; - } - /* check what type of tracks are on this disc */ - entry.cdte_format = CDROM_MSF; - for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { - entry.cdte_track = i; - if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { - tracks->error=CDS_NO_INFO; - return; - } - if (entry.cdte_ctrl & CDROM_DATA_TRACK) { - if (entry.cdte_format == 0x10) - tracks->cdi++; - else if (entry.cdte_format == 0x20) - tracks->xa++; - else - tracks->data++; - } else - tracks->audio++; - cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", - i, entry.cdte_format, entry.cdte_ctrl); - } - cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", - header.cdth_trk1, tracks->audio, tracks->data, - tracks->cdi, tracks->xa); -} - -/* Requests to the low-level drivers will /always/ be done in the - following format convention: - - CDROM_LBA: all data-related requests. - CDROM_MSF: all audio-related requests. - - However, a low-level implementation is allowed to refuse this - request, and return information in its own favorite format. - - It doesn't make sense /at all/ to ask for a play_audio in LBA - format, or ask for multi-session info in MSF format. However, for - backward compatibility these format requests will be satisfied, but - the requests to the low-level drivers will be sanitized in the more - meaningful format indicated above. - */ - -static -void sanitize_format(union cdrom_addr *addr, - u_char * curr, u_char requested) -{ - if (*curr == requested) - return; /* nothing to be done! */ - if (requested == CDROM_LBA) { - addr->lba = (int) addr->msf.frame + - 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); - } else { /* CDROM_MSF */ - int lba = addr->lba; - addr->msf.frame = lba % 75; - lba /= 75; - lba += 2; - addr->msf.second = lba % 60; - addr->msf.minute = lba / 60; - } - *curr = requested; -} - -void init_cdrom_command(struct packet_command *cgc, void *buf, int len, - int type) -{ - memset(cgc, 0, sizeof(struct packet_command)); - if (buf) - memset(buf, 0, len); - cgc->buffer = (char *) buf; - cgc->buflen = len; - cgc->data_direction = type; - cgc->timeout = CDROM_DEF_TIMEOUT; -} - -/* DVD handling */ - -#define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) -#define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) - -static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) -{ - cgc->cmd[0] = GPCMD_REPORT_KEY; - cgc->cmd[10] = type | (agid << 6); - switch (type) { - case 0: case 8: case 5: { - cgc->buflen = 8; - break; - } - case 1: { - cgc->buflen = 16; - break; - } - case 2: case 4: { - cgc->buflen = 12; - break; - } - } - cgc->cmd[9] = cgc->buflen; - cgc->data_direction = CGC_DATA_READ; -} - -static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) -{ - cgc->cmd[0] = GPCMD_SEND_KEY; - cgc->cmd[10] = type | (agid << 6); - switch (type) { - case 1: { - cgc->buflen = 16; - break; - } - case 3: { - cgc->buflen = 12; - break; - } - case 6: { - cgc->buflen = 8; - break; - } - } - cgc->cmd[9] = cgc->buflen; - cgc->data_direction = CGC_DATA_WRITE; -} - -static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) -{ - int ret; - u_char buf[20]; - struct packet_command cgc; - struct cdrom_device_ops *cdo = cdi->ops; - rpc_state_t rpc_state; - - memset(buf, 0, sizeof(buf)); - init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); - - switch (ai->type) { - /* LU data send */ - case DVD_LU_SEND_AGID: - cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n"); - cgc.quiet = 1; - setup_report_key(&cgc, ai->lsa.agid, 0); - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - ai->lsa.agid = buf[7] >> 6; - /* Returning data, let host change state */ - break; - - case DVD_LU_SEND_KEY1: - cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); - setup_report_key(&cgc, ai->lsk.agid, 2); - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - copy_key(ai->lsk.key, &buf[4]); - /* Returning data, let host change state */ - break; - - case DVD_LU_SEND_CHALLENGE: - cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); - setup_report_key(&cgc, ai->lsc.agid, 1); - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - copy_chal(ai->lsc.chal, &buf[4]); - /* Returning data, let host change state */ - break; - - /* Post-auth key */ - case DVD_LU_SEND_TITLE_KEY: - cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); - cgc.quiet = 1; - setup_report_key(&cgc, ai->lstk.agid, 4); - cgc.cmd[5] = ai->lstk.lba; - cgc.cmd[4] = ai->lstk.lba >> 8; - cgc.cmd[3] = ai->lstk.lba >> 16; - cgc.cmd[2] = ai->lstk.lba >> 24; - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - ai->lstk.cpm = (buf[4] >> 7) & 1; - ai->lstk.cp_sec = (buf[4] >> 6) & 1; - ai->lstk.cgms = (buf[4] >> 4) & 3; - copy_key(ai->lstk.title_key, &buf[5]); - /* Returning data, let host change state */ - break; - - case DVD_LU_SEND_ASF: - cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n"); - setup_report_key(&cgc, ai->lsasf.agid, 5); - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - ai->lsasf.asf = buf[7] & 1; - break; - - /* LU data receive (LU changes state) */ - case DVD_HOST_SEND_CHALLENGE: - cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); - setup_send_key(&cgc, ai->hsc.agid, 1); - buf[1] = 0xe; - copy_chal(&buf[4], ai->hsc.chal); - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - ai->type = DVD_LU_SEND_KEY1; - break; - - case DVD_HOST_SEND_KEY2: - cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); - setup_send_key(&cgc, ai->hsk.agid, 3); - buf[1] = 0xa; - copy_key(&buf[4], ai->hsk.key); - - if ((ret = cdo->generic_packet(cdi, &cgc))) { - ai->type = DVD_AUTH_FAILURE; - return ret; - } - ai->type = DVD_AUTH_ESTABLISHED; - break; - - /* Misc */ - case DVD_INVALIDATE_AGID: - cgc.quiet = 1; - cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); - setup_report_key(&cgc, ai->lsa.agid, 0x3f); - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - break; - - /* Get region settings */ - case DVD_LU_SEND_RPC_STATE: - cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); - setup_report_key(&cgc, 0, 8); - memset(&rpc_state, 0, sizeof(rpc_state_t)); - cgc.buffer = (char *) &rpc_state; - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - ai->lrpcs.type = rpc_state.type_code; - ai->lrpcs.vra = rpc_state.vra; - ai->lrpcs.ucca = rpc_state.ucca; - ai->lrpcs.region_mask = rpc_state.region_mask; - ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; - break; - - /* Set region settings */ - case DVD_HOST_SEND_RPC_STATE: - cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); - setup_send_key(&cgc, 0, 6); - buf[1] = 6; - buf[4] = ai->hrpcs.pdrc; - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - break; - - default: - cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); - return -ENOTTY; - } - - return 0; -} - -static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s, - struct packet_command *cgc) -{ - unsigned char buf[21], *base; - struct dvd_layer *layer; - struct cdrom_device_ops *cdo = cdi->ops; - int ret, layer_num = s->physical.layer_num; - - if (layer_num >= DVD_LAYERS) - return -EINVAL; - - init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); - cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; - cgc->cmd[6] = layer_num; - cgc->cmd[7] = s->type; - cgc->cmd[9] = cgc->buflen & 0xff; - - /* - * refrain from reporting errors on non-existing layers (mainly) - */ - cgc->quiet = 1; - - ret = cdo->generic_packet(cdi, cgc); - if (ret) - return ret; - - base = &buf[4]; - layer = &s->physical.layer[layer_num]; - - /* - * place the data... really ugly, but at least we won't have to - * worry about endianess in userspace. - */ - memset(layer, 0, sizeof(*layer)); - layer->book_version = base[0] & 0xf; - layer->book_type = base[0] >> 4; - layer->min_rate = base[1] & 0xf; - layer->disc_size = base[1] >> 4; - layer->layer_type = base[2] & 0xf; - layer->track_path = (base[2] >> 4) & 1; - layer->nlayers = (base[2] >> 5) & 3; - layer->track_density = base[3] & 0xf; - layer->linear_density = base[3] >> 4; - layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; - layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; - layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; - layer->bca = base[16] >> 7; - - return 0; -} - -static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s, - struct packet_command *cgc) -{ - int ret; - u_char buf[8]; - struct cdrom_device_ops *cdo = cdi->ops; - - init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); - cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; - cgc->cmd[6] = s->copyright.layer_num; - cgc->cmd[7] = s->type; - cgc->cmd[8] = cgc->buflen >> 8; - cgc->cmd[9] = cgc->buflen & 0xff; - - ret = cdo->generic_packet(cdi, cgc); - if (ret) - return ret; - - s->copyright.cpst = buf[4]; - s->copyright.rmi = buf[5]; - - return 0; -} - -static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s, - struct packet_command *cgc) -{ - int ret, size; - u_char *buf; - struct cdrom_device_ops *cdo = cdi->ops; - - size = sizeof(s->disckey.value) + 4; - - buf = kmalloc(size, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - init_cdrom_command(cgc, buf, size, CGC_DATA_READ); - cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; - cgc->cmd[7] = s->type; - cgc->cmd[8] = size >> 8; - cgc->cmd[9] = size & 0xff; - cgc->cmd[10] = s->disckey.agid << 6; - - ret = cdo->generic_packet(cdi, cgc); - if (!ret) - memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); - - kfree(buf); - return ret; -} - -static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, - struct packet_command *cgc) -{ - int ret, size = 4 + 188; - u_char *buf; - struct cdrom_device_ops *cdo = cdi->ops; - - buf = kmalloc(size, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - init_cdrom_command(cgc, buf, size, CGC_DATA_READ); - cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; - cgc->cmd[7] = s->type; - cgc->cmd[9] = cgc->buflen & 0xff; - - ret = cdo->generic_packet(cdi, cgc); - if (ret) - goto out; - - s->bca.len = buf[0] << 8 | buf[1]; - if (s->bca.len < 12 || s->bca.len > 188) { - cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len); - ret = -EIO; - goto out; - } - memcpy(s->bca.value, &buf[4], s->bca.len); - ret = 0; -out: - kfree(buf); - return ret; -} - -static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, - struct packet_command *cgc) -{ - int ret = 0, size; - u_char *buf; - struct cdrom_device_ops *cdo = cdi->ops; - - size = sizeof(s->manufact.value) + 4; - - buf = kmalloc(size, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - init_cdrom_command(cgc, buf, size, CGC_DATA_READ); - cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; - cgc->cmd[7] = s->type; - cgc->cmd[8] = size >> 8; - cgc->cmd[9] = size & 0xff; - - ret = cdo->generic_packet(cdi, cgc); - if (ret) - goto out; - - s->manufact.len = buf[0] << 8 | buf[1]; - if (s->manufact.len < 0 || s->manufact.len > 2048) { - cdinfo(CD_WARNING, "Received invalid manufacture info length" - " (%d)\n", s->manufact.len); - ret = -EIO; - } else { - memcpy(s->manufact.value, &buf[4], s->manufact.len); - } - -out: - kfree(buf); - return ret; -} - -static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s, - struct packet_command *cgc) -{ - switch (s->type) { - case DVD_STRUCT_PHYSICAL: - return dvd_read_physical(cdi, s, cgc); - - case DVD_STRUCT_COPYRIGHT: - return dvd_read_copyright(cdi, s, cgc); - - case DVD_STRUCT_DISCKEY: - return dvd_read_disckey(cdi, s, cgc); - - case DVD_STRUCT_BCA: - return dvd_read_bca(cdi, s, cgc); - - case DVD_STRUCT_MANUFACT: - return dvd_read_manufact(cdi, s, cgc); - - default: - cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", - s->type); - return -EINVAL; - } -} - -int cdrom_mode_sense(struct cdrom_device_info *cdi, - struct packet_command *cgc, - int page_code, int page_control) -{ - struct cdrom_device_ops *cdo = cdi->ops; - - memset(cgc->cmd, 0, sizeof(cgc->cmd)); - - cgc->cmd[0] = GPCMD_MODE_SENSE_10; - cgc->cmd[2] = page_code | (page_control << 6); - cgc->cmd[7] = cgc->buflen >> 8; - cgc->cmd[8] = cgc->buflen & 0xff; - cgc->data_direction = CGC_DATA_READ; - return cdo->generic_packet(cdi, cgc); -} - -int cdrom_mode_select(struct cdrom_device_info *cdi, - struct packet_command *cgc) -{ - struct cdrom_device_ops *cdo = cdi->ops; - - memset(cgc->cmd, 0, sizeof(cgc->cmd)); - memset(cgc->buffer, 0, 2); - cgc->cmd[0] = GPCMD_MODE_SELECT_10; - cgc->cmd[1] = 0x10; /* PF */ - cgc->cmd[7] = cgc->buflen >> 8; - cgc->cmd[8] = cgc->buflen & 0xff; - cgc->data_direction = CGC_DATA_WRITE; - return cdo->generic_packet(cdi, cgc); -} - -static int cdrom_read_subchannel(struct cdrom_device_info *cdi, - struct cdrom_subchnl *subchnl, int mcn) -{ - struct cdrom_device_ops *cdo = cdi->ops; - struct packet_command cgc; - char buffer[32]; - int ret; - - init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); - cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; - cgc.cmd[1] = 2; /* MSF addressing */ - cgc.cmd[2] = 0x40; /* request subQ data */ - cgc.cmd[3] = mcn ? 2 : 1; - cgc.cmd[8] = 16; - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - subchnl->cdsc_audiostatus = cgc.buffer[1]; - subchnl->cdsc_format = CDROM_MSF; - subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; - subchnl->cdsc_trk = cgc.buffer[6]; - subchnl->cdsc_ind = cgc.buffer[7]; - - subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; - subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; - subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; - subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; - subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; - subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; - - return 0; -} - -/* - * Specific READ_10 interface - */ -static int cdrom_read_cd(struct cdrom_device_info *cdi, - struct packet_command *cgc, int lba, - int blocksize, int nblocks) -{ - struct cdrom_device_ops *cdo = cdi->ops; - - memset(&cgc->cmd, 0, sizeof(cgc->cmd)); - cgc->cmd[0] = GPCMD_READ_10; - cgc->cmd[2] = (lba >> 24) & 0xff; - cgc->cmd[3] = (lba >> 16) & 0xff; - cgc->cmd[4] = (lba >> 8) & 0xff; - cgc->cmd[5] = lba & 0xff; - cgc->cmd[6] = (nblocks >> 16) & 0xff; - cgc->cmd[7] = (nblocks >> 8) & 0xff; - cgc->cmd[8] = nblocks & 0xff; - cgc->buflen = blocksize * nblocks; - return cdo->generic_packet(cdi, cgc); -} - -/* very generic interface for reading the various types of blocks */ -static int cdrom_read_block(struct cdrom_device_info *cdi, - struct packet_command *cgc, - int lba, int nblocks, int format, int blksize) -{ - struct cdrom_device_ops *cdo = cdi->ops; - - memset(&cgc->cmd, 0, sizeof(cgc->cmd)); - cgc->cmd[0] = GPCMD_READ_CD; - /* expected sector size - cdda,mode1,etc. */ - cgc->cmd[1] = format << 2; - /* starting address */ - cgc->cmd[2] = (lba >> 24) & 0xff; - cgc->cmd[3] = (lba >> 16) & 0xff; - cgc->cmd[4] = (lba >> 8) & 0xff; - cgc->cmd[5] = lba & 0xff; - /* number of blocks */ - cgc->cmd[6] = (nblocks >> 16) & 0xff; - cgc->cmd[7] = (nblocks >> 8) & 0xff; - cgc->cmd[8] = nblocks & 0xff; - cgc->buflen = blksize * nblocks; - - /* set the header info returned */ - switch (blksize) { - case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; - case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; - case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; - default : cgc->cmd[9] = 0x10; - } - - return cdo->generic_packet(cdi, cgc); -} - -static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, - int lba, int nframes) -{ - struct packet_command cgc; - int ret = 0; - int nr; - - cdi->last_sense = 0; - - memset(&cgc, 0, sizeof(cgc)); - - /* - * start with will ra.nframes size, back down if alloc fails - */ - nr = nframes; - do { - cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); - if (cgc.buffer) - break; - - nr >>= 1; - } while (nr); - - if (!nr) - return -ENOMEM; - - if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) { - ret = -EFAULT; - goto out; - } - - cgc.data_direction = CGC_DATA_READ; - while (nframes > 0) { - if (nr > nframes) - nr = nframes; - - ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); - if (ret) - break; - if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { - ret = -EFAULT; - break; - } - ubuf += CD_FRAMESIZE_RAW * nr; - nframes -= nr; - lba += nr; - } -out: - kfree(cgc.buffer); - return ret; -} - -static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, - int lba, int nframes) -{ - struct request_queue *q = cdi->disk->queue; - struct request *rq; - struct bio *bio; - unsigned int len; - int nr, ret = 0; - - if (!q) - return -ENXIO; - - cdi->last_sense = 0; - - while (nframes) { - nr = nframes; - if (cdi->cdda_method == CDDA_BPC_SINGLE) - nr = 1; - if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9)) - nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW; - - len = nr * CD_FRAMESIZE_RAW; - - rq = blk_get_request(q, READ, GFP_KERNEL); - if (!rq) { - ret = -ENOMEM; - break; - } - - ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL); - if (ret) { - blk_put_request(rq); - break; - } - - rq->cmd[0] = GPCMD_READ_CD; - rq->cmd[1] = 1 << 2; - rq->cmd[2] = (lba >> 24) & 0xff; - rq->cmd[3] = (lba >> 16) & 0xff; - rq->cmd[4] = (lba >> 8) & 0xff; - rq->cmd[5] = lba & 0xff; - rq->cmd[6] = (nr >> 16) & 0xff; - rq->cmd[7] = (nr >> 8) & 0xff; - rq->cmd[8] = nr & 0xff; - rq->cmd[9] = 0xf8; - - rq->cmd_len = 12; - rq->cmd_type = REQ_TYPE_BLOCK_PC; - rq->timeout = 60 * HZ; - bio = rq->bio; - - if (blk_execute_rq(q, cdi->disk, rq, 0)) { - struct request_sense *s = rq->sense; - ret = -EIO; - cdi->last_sense = s->sense_key; - } - - if (blk_rq_unmap_user(bio)) - ret = -EFAULT; - blk_put_request(rq); - - if (ret) - break; - - nframes -= nr; - lba += nr; - ubuf += len; - } - - return ret; -} - -static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, - int lba, int nframes) -{ - int ret; - - if (cdi->cdda_method == CDDA_OLD) - return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); - -retry: - /* - * for anything else than success and io error, we need to retry - */ - ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); - if (!ret || ret != -EIO) - return ret; - - /* - * I've seen drives get sense 4/8/3 udma crc errors on multi - * frame dma, so drop to single frame dma if we need to - */ - if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { - printk("cdrom: dropping to single frame dma\n"); - cdi->cdda_method = CDDA_BPC_SINGLE; - goto retry; - } - - /* - * so we have an io error of some sort with multi frame dma. if the - * condition wasn't a hardware error - * problems, not for any error - */ - if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) - return ret; - - printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense); - cdi->cdda_method = CDDA_OLD; - return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); -} - -static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, - void __user *argp) -{ - struct cdrom_multisession ms_info; - u8 requested_format; - int ret; - - cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); - - if (!(cdi->ops->capability & CDC_MULTI_SESSION)) - return -ENOSYS; - - if (copy_from_user(&ms_info, argp, sizeof(ms_info))) - return -EFAULT; - - requested_format = ms_info.addr_format; - if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) - return -EINVAL; - ms_info.addr_format = CDROM_LBA; - - ret = cdi->ops->get_last_session(cdi, &ms_info); - if (ret) - return ret; - - sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); - - if (copy_to_user(argp, &ms_info, sizeof(ms_info))) - return -EFAULT; - - cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); - return 0; -} - -static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) -{ - cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n"); - - if (!CDROM_CAN(CDC_OPEN_TRAY)) - return -ENOSYS; - if (cdi->use_count != 1 || keeplocked) - return -EBUSY; - if (CDROM_CAN(CDC_LOCK)) { - int ret = cdi->ops->lock_door(cdi, 0); - if (ret) - return ret; - } - - return cdi->ops->tray_move(cdi, 1); -} - -static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) -{ - cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); - - if (!CDROM_CAN(CDC_CLOSE_TRAY)) - return -ENOSYS; - return cdi->ops->tray_move(cdi, 0); -} - -static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, - unsigned long arg) -{ - cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); - - if (!CDROM_CAN(CDC_OPEN_TRAY)) - return -ENOSYS; - if (keeplocked) - return -EBUSY; - - cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); - if (arg) - cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; - return 0; -} - -static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, - unsigned long arg) -{ - struct cdrom_changer_info *info; - int ret; - - cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); - - if (!CDROM_CAN(CDC_MEDIA_CHANGED)) - return -ENOSYS; - - /* cannot select disc or select current disc */ - if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) - return media_changed(cdi, 1); - - if ((unsigned int)arg >= cdi->capacity) - return -EINVAL; - - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - ret = cdrom_read_mech_status(cdi, info); - if (!ret) - ret = info->slots[arg].change; - kfree(info); - return ret; -} - -static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, - unsigned long arg) -{ - cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); - - /* - * Options need to be in sync with capability. - * Too late for that, so we have to check each one separately. - */ - switch (arg) { - case CDO_USE_FFLAGS: - case CDO_CHECK_TYPE: - break; - case CDO_LOCK: - if (!CDROM_CAN(CDC_LOCK)) - return -ENOSYS; - break; - case 0: - return cdi->options; - /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ - default: - if (!CDROM_CAN(arg)) - return -ENOSYS; - } - cdi->options |= (int) arg; - return cdi->options; -} - -static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, - unsigned long arg) -{ - cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); - - cdi->options &= ~(int) arg; - return cdi->options; -} - -static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, - unsigned long arg) -{ - cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); - - if (!CDROM_CAN(CDC_SELECT_SPEED)) - return -ENOSYS; - return cdi->ops->select_speed(cdi, arg); -} - -static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, - unsigned long arg) -{ - cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); - - if (!CDROM_CAN(CDC_SELECT_DISC)) - return -ENOSYS; - - if (arg != CDSL_CURRENT && arg != CDSL_NONE) { - if ((int)arg >= cdi->capacity) - return -EINVAL; - } - - /* - * ->select_disc is a hook to allow a driver-specific way of - * seleting disc. However, since there is no equivalent hook for - * cdrom_slot_status this may not actually be useful... - */ - if (cdi->ops->select_disc) - return cdi->ops->select_disc(cdi, arg); - - cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n"); - return cdrom_select_disc(cdi, arg); -} - -static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, - struct block_device *bdev) -{ - cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n"); - - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - if (!CDROM_CAN(CDC_RESET)) - return -ENOSYS; - invalidate_bdev(bdev); - return cdi->ops->reset(cdi); -} - -static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, - unsigned long arg) -{ - cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl"); - - if (!CDROM_CAN(CDC_LOCK)) - return -EDRIVE_CANT_DO_THIS; - - keeplocked = arg ? 1 : 0; - - /* - * Don't unlock the door on multiple opens by default, but allow - * root to do so. - */ - if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) - return -EBUSY; - return cdi->ops->lock_door(cdi, arg); -} - -static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, - unsigned long arg) -{ - cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis"); - - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - debug = arg ? 1 : 0; - return debug; -} - -static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) -{ - cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); - return (cdi->ops->capability & ~cdi->mask); -} - -/* - * The following function is implemented, although very few audio - * discs give Universal Product Code information, which should just be - * the Medium Catalog Number on the box. Note, that the way the code - * is written on the CD is /not/ uniform across all discs! - */ -static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, - void __user *argp) -{ - struct cdrom_mcn mcn; - int ret; - - cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); - - if (!(cdi->ops->capability & CDC_MCN)) - return -ENOSYS; - ret = cdi->ops->get_mcn(cdi, &mcn); - if (ret) - return ret; - - if (copy_to_user(argp, &mcn, sizeof(mcn))) - return -EFAULT; - cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); - return 0; -} - -static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, - unsigned long arg) -{ - cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); - - if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) - return -ENOSYS; - if (!CDROM_CAN(CDC_SELECT_DISC) || - (arg == CDSL_CURRENT || arg == CDSL_NONE)) - return cdi->ops->drive_status(cdi, CDSL_CURRENT); - if (((int)arg >= cdi->capacity)) - return -EINVAL; - return cdrom_slot_status(cdi, arg); -} - -/* - * Ok, this is where problems start. The current interface for the - * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that - * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this - * is often the case, it is also very common for CDs to have some tracks - * with data, and some tracks with audio. Just because I feel like it, - * I declare the following to be the best way to cope. If the CD has ANY - * data tracks on it, it will be returned as a data CD. If it has any XA - * tracks, I will return it as that. Now I could simplify this interface - * by combining these returns with the above, but this more clearly - * demonstrates the problem with the current interface. Too bad this - * wasn't designed to use bitmasks... -Erik - * - * Well, now we have the option CDS_MIXED: a mixed-type CD. - * User level programmers might feel the ioctl is not very useful. - * ---david - */ -static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) -{ - tracktype tracks; - - cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); - - cdrom_count_tracks(cdi, &tracks); - if (tracks.error) - return tracks.error; - - /* Policy mode on */ - if (tracks.audio > 0) { - if (!tracks.data && !tracks.cdi && !tracks.xa) - return CDS_AUDIO; - else - return CDS_MIXED; - } - - if (tracks.cdi > 0) - return CDS_XA_2_2; - if (tracks.xa > 0) - return CDS_XA_2_1; - if (tracks.data > 0) - return CDS_DATA_1; - /* Policy mode off */ - - cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n"); - return CDS_NO_INFO; -} - -static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) -{ - cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); - return cdi->capacity; -} - -static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, - void __user *argp) -{ - struct cdrom_subchnl q; - u8 requested, back; - int ret; - - /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ - - if (copy_from_user(&q, argp, sizeof(q))) - return -EFAULT; - - requested = q.cdsc_format; - if (requested != CDROM_MSF && requested != CDROM_LBA) - return -EINVAL; - q.cdsc_format = CDROM_MSF; - - ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); - if (ret) - return ret; - - back = q.cdsc_format; /* local copy */ - sanitize_format(&q.cdsc_absaddr, &back, requested); - sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); - - if (copy_to_user(argp, &q, sizeof(q))) - return -EFAULT; - /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ - return 0; -} - -static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, - void __user *argp) -{ - struct cdrom_tochdr header; - int ret; - - /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ - - if (copy_from_user(&header, argp, sizeof(header))) - return -EFAULT; - - ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); - if (ret) - return ret; - - if (copy_to_user(argp, &header, sizeof(header))) - return -EFAULT; - /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ - return 0; -} - -static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, - void __user *argp) -{ - struct cdrom_tocentry entry; - u8 requested_format; - int ret; - - /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ - - if (copy_from_user(&entry, argp, sizeof(entry))) - return -EFAULT; - - requested_format = entry.cdte_format; - if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) - return -EINVAL; - /* make interface to low-level uniform */ - entry.cdte_format = CDROM_MSF; - ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry); - if (ret) - return ret; - sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); - - if (copy_to_user(argp, &entry, sizeof(entry))) - return -EFAULT; - /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ - return 0; -} - -static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, - void __user *argp) -{ - struct cdrom_msf msf; - - cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); - - if (!CDROM_CAN(CDC_PLAY_AUDIO)) - return -ENOSYS; - if (copy_from_user(&msf, argp, sizeof(msf))) - return -EFAULT; - return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); -} - -static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, - void __user *argp) -{ - struct cdrom_ti ti; - int ret; - - cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); - - if (!CDROM_CAN(CDC_PLAY_AUDIO)) - return -ENOSYS; - if (copy_from_user(&ti, argp, sizeof(ti))) - return -EFAULT; - - ret = check_for_audio_disc(cdi, cdi->ops); - if (ret) - return ret; - return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); -} -static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, - void __user *argp) -{ - struct cdrom_volctrl volume; - - cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); - - if (!CDROM_CAN(CDC_PLAY_AUDIO)) - return -ENOSYS; - if (copy_from_user(&volume, argp, sizeof(volume))) - return -EFAULT; - return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); -} - -static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, - void __user *argp) -{ - struct cdrom_volctrl volume; - int ret; - - cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); - - if (!CDROM_CAN(CDC_PLAY_AUDIO)) - return -ENOSYS; - - ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); - if (ret) - return ret; - - if (copy_to_user(argp, &volume, sizeof(volume))) - return -EFAULT; - return 0; -} - -static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, - unsigned int cmd) -{ - int ret; - - cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); - - if (!CDROM_CAN(CDC_PLAY_AUDIO)) - return -ENOSYS; - ret = check_for_audio_disc(cdi, cdi->ops); - if (ret) - return ret; - return cdi->ops->audio_ioctl(cdi, cmd, NULL); -} - -/* - * Just about every imaginable ioctl is supported in the Uniform layer - * these days. - * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). - */ -int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, - fmode_t mode, unsigned int cmd, unsigned long arg) -{ - void __user *argp = (void __user *)arg; - int ret; - struct gendisk *disk = bdev->bd_disk; - - /* - * Try the generic SCSI command ioctl's first. - */ - ret = scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); - if (ret != -ENOTTY) - return ret; - - switch (cmd) { - case CDROMMULTISESSION: - return cdrom_ioctl_multisession(cdi, argp); - case CDROMEJECT: - return cdrom_ioctl_eject(cdi); - case CDROMCLOSETRAY: - return cdrom_ioctl_closetray(cdi); - case CDROMEJECT_SW: - return cdrom_ioctl_eject_sw(cdi, arg); - case CDROM_MEDIA_CHANGED: - return cdrom_ioctl_media_changed(cdi, arg); - case CDROM_SET_OPTIONS: - return cdrom_ioctl_set_options(cdi, arg); - case CDROM_CLEAR_OPTIONS: - return cdrom_ioctl_clear_options(cdi, arg); - case CDROM_SELECT_SPEED: - return cdrom_ioctl_select_speed(cdi, arg); - case CDROM_SELECT_DISC: - return cdrom_ioctl_select_disc(cdi, arg); - case CDROMRESET: - return cdrom_ioctl_reset(cdi, bdev); - case CDROM_LOCKDOOR: - return cdrom_ioctl_lock_door(cdi, arg); - case CDROM_DEBUG: - return cdrom_ioctl_debug(cdi, arg); - case CDROM_GET_CAPABILITY: - return cdrom_ioctl_get_capability(cdi); - case CDROM_GET_MCN: - return cdrom_ioctl_get_mcn(cdi, argp); - case CDROM_DRIVE_STATUS: - return cdrom_ioctl_drive_status(cdi, arg); - case CDROM_DISC_STATUS: - return cdrom_ioctl_disc_status(cdi); - case CDROM_CHANGER_NSLOTS: - return cdrom_ioctl_changer_nslots(cdi); - } - - /* - * Use the ioctls that are implemented through the generic_packet() - * interface. this may look at bit funny, but if -ENOTTY is - * returned that particular ioctl is not implemented and we - * let it go through the device specific ones. - */ - if (CDROM_CAN(CDC_GENERIC_PACKET)) { - ret = mmc_ioctl(cdi, cmd, arg); - if (ret != -ENOTTY) - return ret; - } - - /* - * Note: most of the cdinfo() calls are commented out here, - * because they fill up the sys log when CD players poll - * the drive. - */ - switch (cmd) { - case CDROMSUBCHNL: - return cdrom_ioctl_get_subchnl(cdi, argp); - case CDROMREADTOCHDR: - return cdrom_ioctl_read_tochdr(cdi, argp); - case CDROMREADTOCENTRY: - return cdrom_ioctl_read_tocentry(cdi, argp); - case CDROMPLAYMSF: - return cdrom_ioctl_play_msf(cdi, argp); - case CDROMPLAYTRKIND: - return cdrom_ioctl_play_trkind(cdi, argp); - case CDROMVOLCTRL: - return cdrom_ioctl_volctrl(cdi, argp); - case CDROMVOLREAD: - return cdrom_ioctl_volread(cdi, argp); - case CDROMSTART: - case CDROMSTOP: - case CDROMPAUSE: - case CDROMRESUME: - return cdrom_ioctl_audioctl(cdi, cmd); - } - - return -ENOSYS; -} - -/* - * Required when we need to use READ_10 to issue other than 2048 block - * reads - */ -static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) -{ - struct cdrom_device_ops *cdo = cdi->ops; - struct packet_command cgc; - struct modesel_head mh; - - memset(&mh, 0, sizeof(mh)); - mh.block_desc_length = 0x08; - mh.block_length_med = (size >> 8) & 0xff; - mh.block_length_lo = size & 0xff; - - memset(&cgc, 0, sizeof(cgc)); - cgc.cmd[0] = 0x15; - cgc.cmd[1] = 1 << 4; - cgc.cmd[4] = 12; - cgc.buflen = sizeof(mh); - cgc.buffer = (char *) &mh; - cgc.data_direction = CGC_DATA_WRITE; - mh.block_desc_length = 0x08; - mh.block_length_med = (size >> 8) & 0xff; - mh.block_length_lo = size & 0xff; - - return cdo->generic_packet(cdi, &cgc); -} - -static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, - void __user *arg, - struct packet_command *cgc, - int cmd) -{ - struct request_sense sense; - struct cdrom_msf msf; - int blocksize = 0, format = 0, lba; - int ret; - - switch (cmd) { - case CDROMREADRAW: - blocksize = CD_FRAMESIZE_RAW; - break; - case CDROMREADMODE1: - blocksize = CD_FRAMESIZE; - format = 2; - break; - case CDROMREADMODE2: - blocksize = CD_FRAMESIZE_RAW0; - break; - } - IOCTL_IN(arg, struct cdrom_msf, msf); - lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0); - /* FIXME: we need upper bound checking, too!! */ - if (lba < 0) - return -EINVAL; - - cgc->buffer = kmalloc(blocksize, GFP_KERNEL); - if (cgc->buffer == NULL) - return -ENOMEM; - - memset(&sense, 0, sizeof(sense)); - cgc->sense = &sense; - cgc->data_direction = CGC_DATA_READ; - ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize); - if (ret && sense.sense_key == 0x05 && - sense.asc == 0x20 && - sense.ascq == 0x00) { - /* - * SCSI-II devices are not required to support - * READ_CD, so let's try switching block size - */ - /* FIXME: switch back again... */ - ret = cdrom_switch_blocksize(cdi, blocksize); - if (ret) - goto out; - cgc->sense = NULL; - ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1); - ret |= cdrom_switch_blocksize(cdi, blocksize); - } - if (!ret && copy_to_user(arg, cgc->buffer, blocksize)) - ret = -EFAULT; -out: - kfree(cgc->buffer); - return ret; -} - -static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, - void __user *arg) -{ - struct cdrom_read_audio ra; - int lba; - - IOCTL_IN(arg, struct cdrom_read_audio, ra); - - if (ra.addr_format == CDROM_MSF) - lba = msf_to_lba(ra.addr.msf.minute, - ra.addr.msf.second, - ra.addr.msf.frame); - else if (ra.addr_format == CDROM_LBA) - lba = ra.addr.lba; - else - return -EINVAL; - - /* FIXME: we need upper bound checking, too!! */ - if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) - return -EINVAL; - - return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); -} - -static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi, - void __user *arg) -{ - int ret; - struct cdrom_subchnl q; - u_char requested, back; - IOCTL_IN(arg, struct cdrom_subchnl, q); - requested = q.cdsc_format; - if (!((requested == CDROM_MSF) || - (requested == CDROM_LBA))) - return -EINVAL; - q.cdsc_format = CDROM_MSF; - ret = cdrom_read_subchannel(cdi, &q, 0); - if (ret) - return ret; - back = q.cdsc_format; /* local copy */ - sanitize_format(&q.cdsc_absaddr, &back, requested); - sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); - IOCTL_OUT(arg, struct cdrom_subchnl, q); - /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ - return 0; -} - -static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi, - void __user *arg, - struct packet_command *cgc) -{ - struct cdrom_device_ops *cdo = cdi->ops; - struct cdrom_msf msf; - cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); - IOCTL_IN(arg, struct cdrom_msf, msf); - cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF; - cgc->cmd[3] = msf.cdmsf_min0; - cgc->cmd[4] = msf.cdmsf_sec0; - cgc->cmd[5] = msf.cdmsf_frame0; - cgc->cmd[6] = msf.cdmsf_min1; - cgc->cmd[7] = msf.cdmsf_sec1; - cgc->cmd[8] = msf.cdmsf_frame1; - cgc->data_direction = CGC_DATA_NONE; - return cdo->generic_packet(cdi, cgc); -} - -static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, - void __user *arg, - struct packet_command *cgc) -{ - struct cdrom_device_ops *cdo = cdi->ops; - struct cdrom_blk blk; - cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); - IOCTL_IN(arg, struct cdrom_blk, blk); - cgc->cmd[0] = GPCMD_PLAY_AUDIO_10; - cgc->cmd[2] = (blk.from >> 24) & 0xff; - cgc->cmd[3] = (blk.from >> 16) & 0xff; - cgc->cmd[4] = (blk.from >> 8) & 0xff; - cgc->cmd[5] = blk.from & 0xff; - cgc->cmd[7] = (blk.len >> 8) & 0xff; - cgc->cmd[8] = blk.len & 0xff; - cgc->data_direction = CGC_DATA_NONE; - return cdo->generic_packet(cdi, cgc); -} - -static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, - void __user *arg, - struct packet_command *cgc, - unsigned int cmd) -{ - struct cdrom_volctrl volctrl; - unsigned char buffer[32]; - char mask[sizeof(buffer)]; - unsigned short offset; - int ret; - - cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n"); - - IOCTL_IN(arg, struct cdrom_volctrl, volctrl); - - cgc->buffer = buffer; - cgc->buflen = 24; - ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0); - if (ret) - return ret; - - /* originally the code depended on buffer[1] to determine - how much data is available for transfer. buffer[1] is - unfortunately ambigious and the only reliable way seem - to be to simply skip over the block descriptor... */ - offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6)); - - if (offset + 16 > sizeof(buffer)) - return -E2BIG; - - if (offset + 16 > cgc->buflen) { - cgc->buflen = offset + 16; - ret = cdrom_mode_sense(cdi, cgc, - GPMODE_AUDIO_CTL_PAGE, 0); - if (ret) - return ret; - } - - /* sanity check */ - if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || - buffer[offset + 1] < 14) - return -EINVAL; - - /* now we have the current volume settings. if it was only - a CDROMVOLREAD, return these values */ - if (cmd == CDROMVOLREAD) { - volctrl.channel0 = buffer[offset+9]; - volctrl.channel1 = buffer[offset+11]; - volctrl.channel2 = buffer[offset+13]; - volctrl.channel3 = buffer[offset+15]; - IOCTL_OUT(arg, struct cdrom_volctrl, volctrl); - return 0; - } - - /* get the volume mask */ - cgc->buffer = mask; - ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1); - if (ret) - return ret; - - buffer[offset + 9] = volctrl.channel0 & mask[offset + 9]; - buffer[offset + 11] = volctrl.channel1 & mask[offset + 11]; - buffer[offset + 13] = volctrl.channel2 & mask[offset + 13]; - buffer[offset + 15] = volctrl.channel3 & mask[offset + 15]; - - /* set volume */ - cgc->buffer = buffer + offset - 8; - memset(cgc->buffer, 0, 8); - return cdrom_mode_select(cdi, cgc); -} - -static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, - struct packet_command *cgc, - int cmd) -{ - struct cdrom_device_ops *cdo = cdi->ops; - cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); - cgc->cmd[0] = GPCMD_START_STOP_UNIT; - cgc->cmd[1] = 1; - cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0; - cgc->data_direction = CGC_DATA_NONE; - return cdo->generic_packet(cdi, cgc); -} - -static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, - struct packet_command *cgc, - int cmd) -{ - struct cdrom_device_ops *cdo = cdi->ops; - cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); - cgc->cmd[0] = GPCMD_PAUSE_RESUME; - cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; - cgc->data_direction = CGC_DATA_NONE; - return cdo->generic_packet(cdi, cgc); -} - -static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, - void __user *arg, - struct packet_command *cgc) -{ - int ret; - dvd_struct *s; - int size = sizeof(dvd_struct); - - if (!CDROM_CAN(CDC_DVD)) - return -ENOSYS; - - s = kmalloc(size, GFP_KERNEL); - if (!s) - return -ENOMEM; - - cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); - if (copy_from_user(s, arg, size)) { - kfree(s); - return -EFAULT; - } - - ret = dvd_read_struct(cdi, s, cgc); - if (ret) - goto out; - - if (copy_to_user(arg, s, size)) - ret = -EFAULT; -out: - kfree(s); - return ret; -} - -static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi, - void __user *arg) -{ - int ret; - dvd_authinfo ai; - if (!CDROM_CAN(CDC_DVD)) - return -ENOSYS; - cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n"); - IOCTL_IN(arg, dvd_authinfo, ai); - ret = dvd_do_auth(cdi, &ai); - if (ret) - return ret; - IOCTL_OUT(arg, dvd_authinfo, ai); - return 0; -} - -static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi, - void __user *arg) -{ - int ret; - long next = 0; - cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); - ret = cdrom_get_next_writable(cdi, &next); - if (ret) - return ret; - IOCTL_OUT(arg, long, next); - return 0; -} - -static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi, - void __user *arg) -{ - int ret; - long last = 0; - cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); - ret = cdrom_get_last_written(cdi, &last); - if (ret) - return ret; - IOCTL_OUT(arg, long, last); - return 0; -} - -static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, - unsigned long arg) -{ - struct packet_command cgc; - void __user *userptr = (void __user *)arg; - - memset(&cgc, 0, sizeof(cgc)); - - /* build a unified command and queue it through - cdo->generic_packet() */ - switch (cmd) { - case CDROMREADRAW: - case CDROMREADMODE1: - case CDROMREADMODE2: - return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd); - case CDROMREADAUDIO: - return mmc_ioctl_cdrom_read_audio(cdi, userptr); - case CDROMSUBCHNL: - return mmc_ioctl_cdrom_subchannel(cdi, userptr); - case CDROMPLAYMSF: - return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc); - case CDROMPLAYBLK: - return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc); - case CDROMVOLCTRL: - case CDROMVOLREAD: - return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd); - case CDROMSTART: - case CDROMSTOP: - return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd); - case CDROMPAUSE: - case CDROMRESUME: - return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd); - case DVD_READ_STRUCT: - return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc); - case DVD_AUTH: - return mmc_ioctl_dvd_auth(cdi, userptr); - case CDROM_NEXT_WRITABLE: - return mmc_ioctl_cdrom_next_writable(cdi, userptr); - case CDROM_LAST_WRITTEN: - return mmc_ioctl_cdrom_last_written(cdi, userptr); - } - - return -ENOTTY; -} - -static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type, - track_information *ti) -{ - struct cdrom_device_ops *cdo = cdi->ops; - struct packet_command cgc; - int ret, buflen; - - init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); - cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; - cgc.cmd[1] = type & 3; - cgc.cmd[4] = (track & 0xff00) >> 8; - cgc.cmd[5] = track & 0xff; - cgc.cmd[8] = 8; - cgc.quiet = 1; - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - buflen = be16_to_cpu(ti->track_information_length) + - sizeof(ti->track_information_length); - - if (buflen > sizeof(track_information)) - buflen = sizeof(track_information); - - cgc.cmd[8] = cgc.buflen = buflen; - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - /* return actual fill size */ - return buflen; -} - -/* requires CD R/RW */ -static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di) -{ - struct cdrom_device_ops *cdo = cdi->ops; - struct packet_command cgc; - int ret, buflen; - - /* set up command and get the disc info */ - init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); - cgc.cmd[0] = GPCMD_READ_DISC_INFO; - cgc.cmd[8] = cgc.buflen = 2; - cgc.quiet = 1; - - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - /* not all drives have the same disc_info length, so requeue - * packet with the length the drive tells us it can supply - */ - buflen = be16_to_cpu(di->disc_information_length) + - sizeof(di->disc_information_length); - - if (buflen > sizeof(disc_information)) - buflen = sizeof(disc_information); - - cgc.cmd[8] = cgc.buflen = buflen; - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - /* return actual fill size */ - return buflen; -} - -/* return the last written block on the CD-R media. this is for the udf - file system. */ -int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) -{ - struct cdrom_tocentry toc; - disc_information di; - track_information ti; - __u32 last_track; - int ret = -1, ti_size; - - if (!CDROM_CAN(CDC_GENERIC_PACKET)) - goto use_toc; - - ret = cdrom_get_disc_info(cdi, &di); - if (ret < (int)(offsetof(typeof(di), last_track_lsb) - + sizeof(di.last_track_lsb))) - goto use_toc; - - /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ - last_track = (di.last_track_msb << 8) | di.last_track_lsb; - ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); - if (ti_size < (int)offsetof(typeof(ti), track_start)) - goto use_toc; - - /* if this track is blank, try the previous. */ - if (ti.blank) { - if (last_track==1) - goto use_toc; - last_track--; - ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); - } - - if (ti_size < (int)(offsetof(typeof(ti), track_size) - + sizeof(ti.track_size))) - goto use_toc; - - /* if last recorded field is valid, return it. */ - if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) - + sizeof(ti.last_rec_address))) { - *last_written = be32_to_cpu(ti.last_rec_address); - } else { - /* make it up instead */ - *last_written = be32_to_cpu(ti.track_start) + - be32_to_cpu(ti.track_size); - if (ti.free_blocks) - *last_written -= (be32_to_cpu(ti.free_blocks) + 7); - } - return 0; - - /* this is where we end up if the drive either can't do a - GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if - it doesn't give enough information or fails. then we return - the toc contents. */ -use_toc: - toc.cdte_format = CDROM_MSF; - toc.cdte_track = CDROM_LEADOUT; - if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) - return ret; - sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); - *last_written = toc.cdte_addr.lba; - return 0; -} - -/* return the next writable block. also for udf file system. */ -static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable) -{ - disc_information di; - track_information ti; - __u16 last_track; - int ret, ti_size; - - if (!CDROM_CAN(CDC_GENERIC_PACKET)) - goto use_last_written; - - ret = cdrom_get_disc_info(cdi, &di); - if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) - + sizeof(di.last_track_lsb)) - goto use_last_written; - - /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ - last_track = (di.last_track_msb << 8) | di.last_track_lsb; - ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); - if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) - goto use_last_written; - - /* if this track is blank, try the previous. */ - if (ti.blank) { - if (last_track == 1) - goto use_last_written; - last_track--; - ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); - if (ti_size < 0) - goto use_last_written; - } - - /* if next recordable address field is valid, use it. */ - if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) - + sizeof(ti.next_writable)) { - *next_writable = be32_to_cpu(ti.next_writable); - return 0; - } - -use_last_written: - if ((ret = cdrom_get_last_written(cdi, next_writable))) { - *next_writable = 0; - return ret; - } else { - *next_writable += 7; - return 0; - } -} - -EXPORT_SYMBOL(cdrom_get_last_written); -EXPORT_SYMBOL(register_cdrom); -EXPORT_SYMBOL(unregister_cdrom); -EXPORT_SYMBOL(cdrom_open); -EXPORT_SYMBOL(cdrom_release); -EXPORT_SYMBOL(cdrom_ioctl); -EXPORT_SYMBOL(cdrom_media_changed); -EXPORT_SYMBOL(cdrom_number_of_slots); -EXPORT_SYMBOL(cdrom_mode_select); -EXPORT_SYMBOL(cdrom_mode_sense); -EXPORT_SYMBOL(init_cdrom_command); -EXPORT_SYMBOL(cdrom_get_media_event); - -#ifdef CONFIG_SYSCTL - -#define CDROM_STR_SIZE 1000 - -static struct cdrom_sysctl_settings { - char info[CDROM_STR_SIZE]; /* general info */ - int autoclose; /* close tray upon mount, etc */ - int autoeject; /* eject on umount */ - int debug; /* turn on debugging messages */ - int lock; /* lock the door on device open */ - int check; /* check media type */ -} cdrom_sysctl_settings; - -enum cdrom_print_option { - CTL_NAME, - CTL_SPEED, - CTL_SLOTS, - CTL_CAPABILITY -}; - -static int cdrom_print_info(const char *header, int val, char *info, - int *pos, enum cdrom_print_option option) -{ - const int max_size = sizeof(cdrom_sysctl_settings.info); - struct cdrom_device_info *cdi; - int ret; - - ret = scnprintf(info + *pos, max_size - *pos, header); - if (!ret) - return 1; - - *pos += ret; - - list_for_each_entry(cdi, &cdrom_list, list) { - switch (option) { - case CTL_NAME: - ret = scnprintf(info + *pos, max_size - *pos, - "\t%s", cdi->name); - break; - case CTL_SPEED: - ret = scnprintf(info + *pos, max_size - *pos, - "\t%d", cdi->speed); - break; - case CTL_SLOTS: - ret = scnprintf(info + *pos, max_size - *pos, - "\t%d", cdi->capacity); - break; - case CTL_CAPABILITY: - ret = scnprintf(info + *pos, max_size - *pos, - "\t%d", CDROM_CAN(val) != 0); - break; - default: - printk(KERN_INFO "cdrom: invalid option%d\n", option); - return 1; - } - if (!ret) - return 1; - *pos += ret; - } - - return 0; -} - -static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp, - void __user *buffer, size_t *lenp, loff_t *ppos) -{ - int pos; - char *info = cdrom_sysctl_settings.info; - const int max_size = sizeof(cdrom_sysctl_settings.info); - - if (!*lenp || (*ppos && !write)) { - *lenp = 0; - return 0; - } - - mutex_lock(&cdrom_mutex); - - pos = sprintf(info, "CD-ROM information, " VERSION "\n"); - - if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) - goto done; - if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) - goto done; - if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) - goto done; - if (cdrom_print_info("\nCan close tray:\t", - CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan open tray:\t", - CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan lock tray:\t", - CDC_LOCK, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan change speed:", - CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan select disk:", - CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan read multisession:", - CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan read MCN:\t", - CDC_MCN, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nReports media changed:", - CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan play audio:\t", - CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan write CD-R:\t", - CDC_CD_R, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan write CD-RW:", - CDC_CD_RW, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan read DVD:\t", - CDC_DVD, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan write DVD-R:", - CDC_DVD_R, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan write DVD-RAM:", - CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan read MRW:\t", - CDC_MRW, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan write MRW:\t", - CDC_MRW_W, info, &pos, CTL_CAPABILITY)) - goto done; - if (cdrom_print_info("\nCan write RAM:\t", - CDC_RAM, info, &pos, CTL_CAPABILITY)) - goto done; - if (!scnprintf(info + pos, max_size - pos, "\n\n")) - goto done; -doit: - mutex_unlock(&cdrom_mutex); - return proc_dostring(ctl, write, filp, buffer, lenp, ppos); -done: - printk(KERN_INFO "cdrom: info buffer too small\n"); - goto doit; -} - -/* Unfortunately, per device settings are not implemented through - procfs/sysctl yet. When they are, this will naturally disappear. For now - just update all drives. Later this will become the template on which - new registered drives will be based. */ -static void cdrom_update_settings(void) -{ - struct cdrom_device_info *cdi; - - mutex_lock(&cdrom_mutex); - list_for_each_entry(cdi, &cdrom_list, list) { - if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) - cdi->options |= CDO_AUTO_CLOSE; - else if (!autoclose) - cdi->options &= ~CDO_AUTO_CLOSE; - if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) - cdi->options |= CDO_AUTO_EJECT; - else if (!autoeject) - cdi->options &= ~CDO_AUTO_EJECT; - if (lockdoor && CDROM_CAN(CDC_LOCK)) - cdi->options |= CDO_LOCK; - else if (!lockdoor) - cdi->options &= ~CDO_LOCK; - if (check_media_type) - cdi->options |= CDO_CHECK_TYPE; - else - cdi->options &= ~CDO_CHECK_TYPE; - } - mutex_unlock(&cdrom_mutex); -} - -static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp, - void __user *buffer, size_t *lenp, loff_t *ppos) -{ - int ret; - - ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos); - - if (write) { - - /* we only care for 1 or 0. */ - autoclose = !!cdrom_sysctl_settings.autoclose; - autoeject = !!cdrom_sysctl_settings.autoeject; - debug = !!cdrom_sysctl_settings.debug; - lockdoor = !!cdrom_sysctl_settings.lock; - check_media_type = !!cdrom_sysctl_settings.check; - - /* update the option flags according to the changes. we - don't have per device options through sysctl yet, - but we will have and then this will disappear. */ - cdrom_update_settings(); - } - - return ret; -} - -/* Place files in /proc/sys/dev/cdrom */ -static ctl_table cdrom_table[] = { - { - .procname = "info", - .data = &cdrom_sysctl_settings.info, - .maxlen = CDROM_STR_SIZE, - .mode = 0444, - .proc_handler = &cdrom_sysctl_info, - }, - { - .procname = "autoclose", - .data = &cdrom_sysctl_settings.autoclose, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &cdrom_sysctl_handler, - }, - { - .procname = "autoeject", - .data = &cdrom_sysctl_settings.autoeject, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &cdrom_sysctl_handler, - }, - { - .procname = "debug", - .data = &cdrom_sysctl_settings.debug, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &cdrom_sysctl_handler, - }, - { - .procname = "lock", - .data = &cdrom_sysctl_settings.lock, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &cdrom_sysctl_handler, - }, - { - .procname = "check_media", - .data = &cdrom_sysctl_settings.check, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &cdrom_sysctl_handler - }, - { .ctl_name = 0 } -}; - -static ctl_table cdrom_cdrom_table[] = { - { - .ctl_name = DEV_CDROM, - .procname = "cdrom", - .maxlen = 0, - .mode = 0555, - .child = cdrom_table, - }, - { .ctl_name = 0 } -}; - -/* Make sure that /proc/sys/dev is there */ -static ctl_table cdrom_root_table[] = { - { - .ctl_name = CTL_DEV, - .procname = "dev", - .maxlen = 0, - .mode = 0555, - .child = cdrom_cdrom_table, - }, - { .ctl_name = 0 } -}; -static struct ctl_table_header *cdrom_sysctl_header; - -static void cdrom_sysctl_register(void) -{ - static int initialized; - - if (initialized == 1) - return; - - cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); - - /* set the defaults */ - cdrom_sysctl_settings.autoclose = autoclose; - cdrom_sysctl_settings.autoeject = autoeject; - cdrom_sysctl_settings.debug = debug; - cdrom_sysctl_settings.lock = lockdoor; - cdrom_sysctl_settings.check = check_media_type; - - initialized = 1; -} - -static void cdrom_sysctl_unregister(void) -{ - if (cdrom_sysctl_header) - unregister_sysctl_table(cdrom_sysctl_header); -} - -#else /* CONFIG_SYSCTL */ - -static void cdrom_sysctl_register(void) -{ -} - -static void cdrom_sysctl_unregister(void) -{ -} - -#endif /* CONFIG_SYSCTL */ - -static int __init cdrom_init(void) -{ - cdrom_sysctl_register(); - - return 0; -} - -static void __exit cdrom_exit(void) -{ - printk(KERN_INFO "Uniform CD-ROM driver unloaded\n"); - cdrom_sysctl_unregister(); -} - -module_init(cdrom_init); -module_exit(cdrom_exit); -MODULE_LICENSE("GPL"); |