cdrom.c
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- /* 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 loose the index part, however.
- -- Small modifications to accomodate 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
- -------------------------------------------------------------------------*/
- #define REVISION "Revision: 3.12"
- #define VERSION "Id: cdrom.c 3.12 2000/10/18"
- /* 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/config.h>
- #include <linux/module.h>
- #include <linux/fs.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/init.h>
- #include <asm/fcntl.h>
- #include <asm/segment.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;
- MODULE_PARM(debug, "i");
- MODULE_PARM(autoclose, "i");
- MODULE_PARM(autoeject, "i");
- MODULE_PARM(lockdoor, "i");
- MODULE_PARM(check_media_type, "i");
- #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 *) (arg), sizeof (in)))
- return -EFAULT;
- #define IOCTL_OUT(arg, type, out)
- if (copy_to_user((type *) (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
- /* 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(kdev_t dev, long *last_written);
- int cdrom_get_next_writable(kdev_t dev, long *next_writable);
- #ifdef CONFIG_SYSCTL
- static void cdrom_sysctl_register(void);
- #endif /* CONFIG_SYSCTL */
- static struct cdrom_device_info *topCdromPtr;
- static devfs_handle_t devfs_handle;
- static struct unique_numspace cdrom_numspace = UNIQUE_NUMBERSPACE_INITIALISER;
- /* 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;
- int major = MAJOR(cdi->dev);
- struct cdrom_device_ops *cdo = cdi->ops;
- int *change_capability = (int *)&cdo->capability; /* hack */
- cdinfo(CD_OPEN, "entering register_cdromn");
- if (major < 0 || major >= MAX_BLKDEV)
- return -1;
- if (cdo->open == NULL || cdo->release == NULL)
- return -2;
- if ( !banner_printed ) {
- printk(KERN_INFO "Uniform CD-ROM driver " REVISION "n");
- banner_printed = 1;
- #ifdef CONFIG_SYSCTL
- cdrom_sysctl_register();
- #endif /* CONFIG_SYSCTL */
- }
- 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(audio_ioctl, CDC_PLAY_AUDIO);
- ENSURE(dev_ioctl, CDC_IOCTLS);
- 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 (!devfs_handle)
- devfs_handle = devfs_mk_dir (NULL, "cdroms", NULL);
- cdi->number = devfs_alloc_unique_number (&cdrom_numspace);
- if (cdi->de) {
- int pos;
- devfs_handle_t slave;
- char rname[64];
- pos = devfs_generate_path (cdi->de, rname + 3,
- sizeof rname - 3);
- if (pos >= 0) {
- char vname[16];
- sprintf (vname, "cdrom%d", cdi->number);
- strncpy (rname + pos, "../", 3);
- devfs_mk_symlink (devfs_handle, vname,
- DEVFS_FL_DEFAULT,
- rname + pos, &slave, NULL);
- devfs_auto_unregister (cdi->de, slave);
- }
- }
- cdinfo(CD_REG_UNREG, "drive "/dev/%s" registeredn", cdi->name);
- cdi->next = topCdromPtr;
- topCdromPtr = cdi;
- return 0;
- }
- #undef ENSURE
- int unregister_cdrom(struct cdrom_device_info *unreg)
- {
- struct cdrom_device_info *cdi, *prev;
- int major = MAJOR(unreg->dev);
- cdinfo(CD_OPEN, "entering unregister_cdromn");
- if (major < 0 || major >= MAX_BLKDEV)
- return -1;
- prev = NULL;
- cdi = topCdromPtr;
- while (cdi != NULL && cdi->dev != unreg->dev) {
- prev = cdi;
- cdi = cdi->next;
- }
- if (cdi == NULL)
- return -2;
- if (prev)
- prev->next = cdi->next;
- else
- topCdromPtr = cdi->next;
- cdi->ops->n_minors--;
- devfs_unregister (cdi->de);
- devfs_dealloc_unique_number (&cdrom_numspace, cdi->number);
- cdinfo(CD_REG_UNREG, "drive "/dev/%s" unregisteredn", cdi->name);
- return 0;
- }
- struct cdrom_device_info *cdrom_find_device(kdev_t dev)
- {
- struct cdrom_device_info *cdi;
- cdi = topCdromPtr;
- while (cdi != NULL && cdi->dev != dev)
- cdi = cdi->next;
- return cdi;
- }
- /* 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 inode *ip, struct file *fp)
- {
- struct cdrom_device_info *cdi;
- kdev_t dev = ip->i_rdev;
- int ret;
- cdinfo(CD_OPEN, "entering cdrom_openn");
- if ((cdi = cdrom_find_device(dev)) == NULL)
- return -ENODEV;
- if ((fp->f_mode & FMODE_WRITE) && !CDROM_CAN(CDC_DVD_RAM))
- return -EROFS;
- /* if this was a O_NONBLOCK open and we should honor the flags,
- * do a quick open without drive/disc integrity checks. */
- if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS))
- ret = cdi->ops->open(cdi, 1);
- else
- ret = open_for_data(cdi);
- if (!ret) cdi->use_count++;
- cdinfo(CD_OPEN, "Use count for "/dev/%s" now %dn", 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(dev);
- 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_datan");
- /* 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=%dn", 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");
- }
- 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)current->pid);
- 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_WARNING, "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.
- */
- 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_discn");
- 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=%dn", 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;
- }
- /* Admittedly, the logic below could be performed in a nicer way. */
- int cdrom_release(struct inode *ip, struct file *fp)
- {
- kdev_t dev = ip->i_rdev;
- struct cdrom_device_info *cdi = cdrom_find_device(dev);
- struct cdrom_device_ops *cdo = cdi->ops;
- int opened_for_data;
- cdinfo(CD_CLOSE, "entering cdrom_releasen");
- if (cdi->use_count > 0)
- cdi->use_count--;
- if (cdi->use_count == 0)
- cdinfo(CD_CLOSE, "Use count for "/dev/%s" now zeron", cdi->name);
- if (cdi->use_count == 0 &&
- cdo->capability & CDC_LOCK && !keeplocked) {
- cdinfo(CD_CLOSE, "Unlocking door!n");
- cdo->lock_door(cdi, 0);
- }
- opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
- !(fp && fp->f_flags & O_NONBLOCK);
- 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);
- }
- return 0;
- }
- static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
- struct cdrom_changer_info *buf)
- {
- struct cdrom_generic_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;
-
- if ((ret = cdrom_read_mech_status(cdi, &info)))
- return ret;
- if (info.slots[slot].disc_present)
- return CDS_DISC_OK;
- else
- return CDS_NO_DISC;
- }
- /* 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;
- if ((status = cdrom_read_mech_status(cdi, &info)) == 0)
- nslots = info.hdr.nslots;
- 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 cdrom_generic_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);
- }
- 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);
- }
- if ((ret = cdrom_read_mech_status(cdi, &info)))
- return ret;
- curslot = info.hdr.curslot;
- 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->mc_flags &= ~mask; /* clear bit */
- return ret;
- }
- int cdrom_media_changed(kdev_t dev)
- {
- struct cdrom_device_info *cdi = cdrom_find_device(dev);
- /* 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. */
- 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_tracksn");
- if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
- tracks->error=CDS_NO_INFO;
- return;
- }
- /* 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=%dn",
- i, entry.cdte_format, entry.cdte_ctrl);
- }
- cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XAn",
- 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 cdrom_generic_command *cgc, void *buf, int len,
- int type)
- {
- memset(cgc, 0, sizeof(struct cdrom_generic_command));
- if (buf)
- memset(buf, 0, len);
- cgc->buffer = (char *) buf;
- cgc->buflen = len;
- cgc->data_direction = type;
- cgc->timeout = 5*HZ;
- }
- /* 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 cdrom_generic_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 cdrom_generic_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 cdrom_generic_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_AGIDn");
- 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_KEY1n");
- 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_CHALLENGEn");
- 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_KEYn");
- 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_ASFn");
- 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_CHALLENGEn");
- 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_KEY2n");
- 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:
- cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGIDn");
- 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_STATEn");
- 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_STATEn");
- 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)
- {
- unsigned char buf[20], *base;
- struct dvd_layer *layer;
- struct cdrom_generic_command cgc;
- 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;
- if ((ret = cdo->generic_packet(cdi, &cgc)))
- 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)
- {
- int ret;
- u_char buf[8];
- struct cdrom_generic_command cgc;
- 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;
- if ((ret = cdo->generic_packet(cdi, &cgc)))
- 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)
- {
- int ret, size;
- u_char *buf;
- struct cdrom_generic_command cgc;
- struct cdrom_device_ops *cdo = cdi->ops;
- size = sizeof(s->disckey.value) + 4;
- if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
- 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;
- if (!(ret = cdo->generic_packet(cdi, &cgc)))
- 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)
- {
- int ret;
- u_char buf[4 + 188];
- struct cdrom_generic_command cgc;
- 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[7] = s->type;
- cgc.cmd[9] = cgc.buflen = 0xff;
- if ((ret = cdo->generic_packet(cdi, &cgc)))
- return ret;
- 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);
- return -EIO;
- }
- memcpy(s->bca.value, &buf[4], s->bca.len);
- return 0;
- }
- static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s)
- {
- int ret = 0, size;
- u_char *buf;
- struct cdrom_generic_command cgc;
- struct cdrom_device_ops *cdo = cdi->ops;
- size = sizeof(s->manufact.value) + 4;
- if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
- 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;
- if ((ret = cdo->generic_packet(cdi, &cgc))) {
- kfree(buf);
- return ret;
- }
- 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->bca.len);
- ret = -EIO;
- } else {
- memcpy(s->manufact.value, &buf[4], s->manufact.len);
- }
- kfree(buf);
- return ret;
- }
- static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
- {
- switch (s->type) {
- case DVD_STRUCT_PHYSICAL:
- return dvd_read_physical(cdi, s);
- case DVD_STRUCT_COPYRIGHT:
- return dvd_read_copyright(cdi, s);
- case DVD_STRUCT_DISCKEY:
- return dvd_read_disckey(cdi, s);
- case DVD_STRUCT_BCA:
- return dvd_read_bca(cdi, s);
- case DVD_STRUCT_MANUFACT:
- return dvd_read_manufact(cdi, s);
-
- 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 cdrom_generic_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 cdrom_generic_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 cdrom_generic_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 cdrom_generic_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 cdrom_generic_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);
- }
- /* Just about every imaginable ioctl is supported in the Uniform layer
- * these days. ATAPI / SCSI specific code now mainly resides in
- * mmc_ioct().
- */
- int cdrom_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
- unsigned long arg)
- {
- kdev_t dev = ip->i_rdev;
- struct cdrom_device_info *cdi = cdrom_find_device(dev);
- struct cdrom_device_ops *cdo = cdi->ops;
- int ret;
- /* the first few commands do not deal with audio drive_info, but
- only with routines in cdrom device operations. */
- switch (cmd) {
- case CDROMMULTISESSION: {
- struct cdrom_multisession ms_info;
- u_char requested_format;
- cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSIONn");
- if (!(cdo->capability & CDC_MULTI_SESSION))
- return -ENOSYS;
- IOCTL_IN(arg, struct cdrom_multisession, ms_info);
- requested_format = ms_info.addr_format;
- if (!((requested_format == CDROM_MSF) ||
- (requested_format == CDROM_LBA)))
- return -EINVAL;
- ms_info.addr_format = CDROM_LBA;
- if ((ret=cdo->get_last_session(cdi, &ms_info)))
- return ret;
- sanitize_format(&ms_info.addr, &ms_info.addr_format,
- requested_format);
- IOCTL_OUT(arg, struct cdrom_multisession, ms_info);
- cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successfuln");
- return 0;
- }
- case CDROMEJECT: {
- cdinfo(CD_DO_IOCTL, "entering CDROMEJECTn");
- if (!CDROM_CAN(CDC_OPEN_TRAY))
- return -ENOSYS;
- if (cdi->use_count != 1 || keeplocked)
- return -EBUSY;
- if (CDROM_CAN(CDC_LOCK))
- if ((ret=cdo->lock_door(cdi, 0)))
- return ret;
- return cdo->tray_move(cdi, 1);
- }
- case CDROMCLOSETRAY: {
- cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAYn");
- if (!CDROM_CAN(CDC_CLOSE_TRAY))
- return -ENOSYS;
- return cdo->tray_move(cdi, 0);
- }
- case CDROMEJECT_SW: {
- cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SWn");
- 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;
- }
- case CDROM_MEDIA_CHANGED: {
- struct cdrom_changer_info info;
- cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGEDn");
- 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;
- if ((ret = cdrom_read_mech_status(cdi, &info)))
- return ret;
- return info.slots[arg].change;
- }
- case CDROM_SET_OPTIONS: {
- cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONSn");
- /* 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;
- }
- case CDROM_CLEAR_OPTIONS: {
- cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONSn");
- cdi->options &= ~(int) arg;
- return cdi->options;
- }
- case CDROM_SELECT_SPEED: {
- cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEEDn");
- if (!CDROM_CAN(CDC_SELECT_SPEED))
- return -ENOSYS;
- return cdo->select_speed(cdi, arg);
- }
- case CDROM_SELECT_DISC: {
- cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISCn");
- if (!CDROM_CAN(CDC_SELECT_DISC))
- return -ENOSYS;
- if ((arg != CDSL_CURRENT) && (arg != CDSL_NONE))
- if ((int)arg >= cdi->capacity)
- return -EINVAL;
- /* cdo->select_disc is a hook to allow a driver-specific
- * way of seleting disc. However, since there is no
- * equiv hook for cdrom_slot_status this may not
- * actually be useful...
- */
- if (cdo->select_disc != NULL)
- return cdo->select_disc(cdi, arg);
- /* no driver specific select_disc(), call our own */
- cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()n");
- return cdrom_select_disc(cdi, arg);
- }
- case CDROMRESET: {
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- cdinfo(CD_DO_IOCTL, "entering CDROM_RESETn");
- if (!CDROM_CAN(CDC_RESET))
- return -ENOSYS;
- return cdo->reset(cdi);
- }
- case CDROM_LOCKDOOR: {
- 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,but allow root
- * to do so */
- if ((cdi->use_count != 1) && !arg && !capable(CAP_SYS_ADMIN))
- return -EBUSY;
- return cdo->lock_door(cdi, arg);
- }
- case CDROM_DEBUG: {
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- cdinfo(CD_DO_IOCTL, "%sabling debug.n", arg ? "En" : "Dis");
- debug = arg ? 1 : 0;
- return debug;
- }
- case CDROM_GET_CAPABILITY: {
- cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITYn");
- return (cdo->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!
- */
- case CDROM_GET_MCN: {
- struct cdrom_mcn mcn;
- cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCNn");
- if (!(cdo->capability & CDC_MCN))
- return -ENOSYS;
- if ((ret=cdo->get_mcn(cdi, &mcn)))
- return ret;
- IOCTL_OUT(arg, struct cdrom_mcn, mcn);
- cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successfuln");
- return 0;
- }
- case CDROM_DRIVE_STATUS: {
- cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUSn");
- if (!(cdo->capability & CDC_DRIVE_STATUS))
- return -ENOSYS;
- if (!CDROM_CAN(CDC_SELECT_DISC))
- return cdo->drive_status(cdi, CDSL_CURRENT);
- if ((arg == CDSL_CURRENT) || (arg == CDSL_NONE))
- return cdo->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
- */
- case CDROM_DISC_STATUS: {
- tracktype tracks;
- cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUSn");
- cdrom_count_tracks(cdi, &tracks);
- if (tracks.error)
- return(tracks.error);
- /* Policy mode on */
- if (tracks.audio > 0) {
- if (tracks.data==0 && tracks.cdi==0 && tracks.xa==0)
- 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;
- }
- case CDROM_CHANGER_NSLOTS: {
- cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTSn");
- return cdi->capacity;
- }
- }
- /* 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: {
- struct cdrom_subchnl q;
- u_char requested, back;
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
- /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNLn");*/
- 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;
- if ((ret=cdo->audio_ioctl(cdi, cmd, &q)))
- 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 successfuln"); */
- return 0;
- }
- case CDROMREADTOCHDR: {
- struct cdrom_tochdr header;
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
- /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDRn"); */
- IOCTL_IN(arg, struct cdrom_tochdr, header);
- if ((ret=cdo->audio_ioctl(cdi, cmd, &header)))
- return ret;
- IOCTL_OUT(arg, struct cdrom_tochdr, header);
- /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successfuln"); */
- return 0;
- }
- case CDROMREADTOCENTRY: {
- struct cdrom_tocentry entry;
- u_char requested_format;
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
- /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRYn"); */
- IOCTL_IN(arg, struct cdrom_tocentry, entry);
- 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;
- if ((ret=cdo->audio_ioctl(cdi, cmd, &entry)))
- return ret;
- sanitize_format(&entry.cdte_addr,
- &entry.cdte_format, requested_format);
- IOCTL_OUT(arg, struct cdrom_tocentry, entry);
- /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successfuln"); */
- return 0;
- }
- case CDROMPLAYMSF: {
- struct cdrom_msf msf;
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
- cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSFn");
- IOCTL_IN(arg, struct cdrom_msf, msf);
- return cdo->audio_ioctl(cdi, cmd, &msf);
- }
- case CDROMPLAYTRKIND: {
- struct cdrom_ti ti;
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
- cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKINDn");
- IOCTL_IN(arg, struct cdrom_ti, ti);
- CHECKAUDIO;
- return cdo->audio_ioctl(cdi, cmd, &ti);
- }
- case CDROMVOLCTRL: {
- struct cdrom_volctrl volume;
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
- cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRLn");
- IOCTL_IN(arg, struct cdrom_volctrl, volume);
- return cdo->audio_ioctl(cdi, cmd, &volume);
- }
- case CDROMVOLREAD: {
- struct cdrom_volctrl volume;
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
- cdinfo(CD_DO_IOCTL, "entering CDROMVOLREADn");
- if ((ret=cdo->audio_ioctl(cdi, cmd, &volume)))
- return ret;
- IOCTL_OUT(arg, struct cdrom_volctrl, volume);
- return 0;
- }
- case CDROMSTART:
- case CDROMSTOP:
- case CDROMPAUSE:
- case CDROMRESUME: {
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
- cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)n");
- CHECKAUDIO;
- return cdo->audio_ioctl(cdi, cmd, NULL);
- }
- } /* switch */
- /* do the device specific ioctls */
- if (CDROM_CAN(CDC_IOCTLS))
- return cdo->dev_ioctl(cdi, cmd, arg);
-
- return -ENOSYS;
- }
- static inline
- int msf_to_lba(char m, char s, char f)
- {
- return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
- }
- /*
- * 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 cdrom_generic_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 int cdrom_do_cmd(struct cdrom_device_info *cdi,
- struct cdrom_generic_command *cgc)
- {
- struct request_sense *usense, sense;
- unsigned char *ubuf;
- int ret;
- if (cgc->data_direction == CGC_DATA_UNKNOWN)
- return -EINVAL;
- if (cgc->buflen < 0 || cgc->buflen >= 131072)
- return -EINVAL;
- if ((ubuf = cgc->buffer)) {
- cgc->buffer = kmalloc(cgc->buflen, GFP_KERNEL);
- if (cgc->buffer == NULL)
- return -ENOMEM;
- }
- usense = cgc->sense;
- cgc->sense = &sense;
- if (usense && !access_ok(VERIFY_WRITE, usense, sizeof(*usense)))
- return -EFAULT;
- if (cgc->data_direction == CGC_DATA_READ) {
- if (!access_ok(VERIFY_READ, ubuf, cgc->buflen))
- return -EFAULT;
- } else if (cgc->data_direction == CGC_DATA_WRITE) {
- if (copy_from_user(cgc->buffer, ubuf, cgc->buflen)) {
- kfree(cgc->buffer);
- return -EFAULT;
- }
- }
- ret = cdi->ops->generic_packet(cdi, cgc);
- __copy_to_user(usense, cgc->sense, sizeof(*usense));
- if (!ret && cgc->data_direction == CGC_DATA_READ)
- __copy_to_user(ubuf, cgc->buffer, cgc->buflen);
- kfree(cgc->buffer);
- return ret;
- }
- static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
- unsigned long arg)
- {
- struct cdrom_device_ops *cdo = cdi->ops;
- struct cdrom_generic_command cgc;
- struct request_sense sense;
- kdev_t dev = cdi->dev;
- char buffer[32];
- int ret = 0;
- memset(&cgc, 0, sizeof(cgc));
- /* build a unified command and queue it through
- cdo->generic_packet() */
- switch (cmd) {
- case CDROMREADRAW:
- case CDROMREADMODE1:
- case CDROMREADMODE2: {
- struct cdrom_msf msf;
- int blocksize = 0, format = 0, lba;
-
- 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 = (char *) 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... */
- if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
- kfree(cgc.buffer);
- return ret;
- }
- cgc.sense = NULL;
- ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
- ret |= cdrom_switch_blocksize(cdi, blocksize);
- }
- if (!ret && copy_to_user((char *)arg, cgc.buffer, blocksize))
- ret = -EFAULT;
- kfree(cgc.buffer);
- return ret;
- }
- case CDROMREADAUDIO: {
- struct cdrom_read_audio ra;
- int lba, nr;
- 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)
- return -EINVAL;
- /*
- * start with will ra.nframes size, back down if alloc fails
- */
- nr = ra.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, ra.buf, ra.nframes*CD_FRAMESIZE_RAW)) {
- kfree(cgc.buffer);
- return -EFAULT;
- }
- cgc.data_direction = CGC_DATA_READ;
- while (ra.nframes > 0) {
- if (nr > ra.nframes)
- nr = ra.nframes;
- ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
- if (ret)
- break;
- __copy_to_user(ra.buf, cgc.buffer, CD_FRAMESIZE_RAW*nr);
- ra.buf += CD_FRAMESIZE_RAW * nr;
- ra.nframes -= nr;
- lba += nr;
- }
- kfree(cgc.buffer);
- return ret;
- }
- case CDROMSUBCHNL: {
- 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;
- if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
- 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 successfuln"); */
- return 0;
- }
- case CDROMPLAYMSF: {
- struct cdrom_msf msf;
- cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSFn");
- 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);
- }
- case CDROMPLAYBLK: {
- struct cdrom_blk blk;
- cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLKn");
- 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);
- }
- case CDROMVOLCTRL:
- case CDROMVOLREAD: {
- struct cdrom_volctrl volctrl;
- char mask[32];
- unsigned short offset;
- cdinfo(CD_DO_IOCTL, "entering CDROMVOLUMEn");
- IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
- cgc.buffer = buffer;
- cgc.buflen = 24;
- if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
- return ret;
-
- /* some drives have longer pages, adjust and reread. */
- if (buffer[1] > cgc.buflen) {
- cgc.buflen = buffer[1] + 2;
- if ((ret = cdrom_mode_sense(cdi, &cgc,
- GPMODE_AUDIO_CTL_PAGE, 0)))
- return ret;
- }
-
- /* get the offset from the length of the page. length
- is measure from byte 2 an on, thus the 14. */
- offset = buffer[1] - 14;
- /* 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;
- if ((ret = cdrom_mode_sense(cdi, &cgc,
- GPMODE_AUDIO_CTL_PAGE, 1)))
- 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;
- return cdrom_mode_select(cdi, &cgc);
- }
- case CDROMSTART:
- case CDROMSTOP: {
- cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOPn");
- 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);
- }
- case CDROMPAUSE:
- case CDROMRESUME: {
- cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUMEn");
- 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);
- }
- case DVD_READ_STRUCT: {
- dvd_struct *s;
- int size = sizeof(dvd_struct);
- if (!CDROM_CAN(CDC_DVD))
- return -ENOSYS;
- if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL)
- return -ENOMEM;
- cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCTn");
- if (copy_from_user(s, (dvd_struct *)arg, size)) {
- kfree(s);
- return -EFAULT;
- }
- if ((ret = dvd_read_struct(cdi, s))) {
- kfree(s);
- return ret;
- }
- if (copy_to_user((dvd_struct *)arg, s, size))
- ret = -EFAULT;
- kfree(s);
- return ret;
- }
- case DVD_AUTH: {
- dvd_authinfo ai;
- if (!CDROM_CAN(CDC_DVD))
- return -ENOSYS;
- cdinfo(CD_DO_IOCTL, "entering DVD_AUTHn");
- IOCTL_IN(arg, dvd_authinfo, ai);
- if ((ret = dvd_do_auth (cdi, &ai)))
- return ret;
- IOCTL_OUT(arg, dvd_authinfo, ai);
- return 0;
- }
- case CDROM_SEND_PACKET: {
- if (!CDROM_CAN(CDC_GENERIC_PACKET))
- return -ENOSYS;
- cdinfo(CD_DO_IOCTL, "entering CDROM_SEND_PACKETn");
- IOCTL_IN(arg, struct cdrom_generic_command, cgc);
- return cdrom_do_cmd(cdi, &cgc);
- }
- case CDROM_NEXT_WRITABLE: {
- long next = 0;
- cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLEn");
- if ((ret = cdrom_get_next_writable(dev, &next)))
- return ret;
- IOCTL_OUT(arg, long, next);
- return 0;
- }
- case CDROM_LAST_WRITTEN: {
- long last = 0;
- cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTENn");
- if ((ret = cdrom_get_last_written(dev, &last)))
- return ret;
- IOCTL_OUT(arg, long, last);
- return 0;
- }
- } /* switch */
- return -ENOTTY;
- }
- int cdrom_get_track_info(kdev_t dev, __u16 track, __u8 type,
- track_information *ti)
- {
- struct cdrom_device_info *cdi = cdrom_find_device(dev);
- struct cdrom_device_ops *cdo = cdi->ops;
- struct cdrom_generic_command cgc;
- int ret;
- 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;
-
- cgc.buflen = be16_to_cpu(ti->track_information_length) +
- sizeof(ti->track_information_length);
- if (cgc.buflen > sizeof(track_information))
- cgc.buflen = sizeof(track_information);
- cgc.cmd[8] = cgc.buflen;
- return cdo->generic_packet(cdi, &cgc);
- }
- /* requires CD R/RW */
- int cdrom_get_disc_info(kdev_t dev, disc_information *di)
- {
- struct cdrom_device_info *cdi = cdrom_find_device(dev);
- struct cdrom_device_ops *cdo = cdi->ops;
- struct cdrom_generic_command cgc;
- int ret;
- /* 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
- */
- cgc.buflen = be16_to_cpu(di->disc_information_length) +
- sizeof(di->disc_information_length);
- if (cgc.buflen > sizeof(disc_information))
- cgc.buflen = sizeof(disc_information);
- cgc.cmd[8] = cgc.buflen;
- return cdo->generic_packet(cdi, &cgc);
- }
- /* return the last written block on the CD-R media. this is for the udf
- file system. */
- int cdrom_get_last_written(kdev_t dev, long *last_written)
- {
- struct cdrom_device_info *cdi = cdrom_find_device(dev);
- struct cdrom_tocentry toc;
- disc_information di;
- track_information ti;
- __u32 last_track;
- int ret = -1;
- if (!CDROM_CAN(CDC_GENERIC_PACKET))
- goto use_toc;
- if ((ret = cdrom_get_disc_info(dev, &di)))
- goto use_toc;
- last_track = (di.last_track_msb << 8) | di.last_track_lsb;
- if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
- goto use_toc;
- /* if this track is blank, try the previous. */
- if (ti.blank) {
- last_track--;
- if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
- goto use_toc;
- }
- /* if last recorded field is valid, return it. */
- if (ti.lra_v) {
- *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 fails. then we return the toc contents. */
- use_toc:
- toc.cdte_format = CDROM_MSF;
- toc.cdte_track = CDROM_LEADOUT;
- if (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. */
- int cdrom_get_next_writable(kdev_t dev, long *next_writable)
- {
- struct cdrom_device_info *cdi = cdrom_find_device(dev);
- disc_information di;
- track_information ti;
- __u16 last_track;
- int ret = -1;
- if (!CDROM_CAN(CDC_GENERIC_PACKET))
- goto use_last_written;
- if ((ret = cdrom_get_disc_info(dev, &di)))
- goto use_last_written;
- last_track = (di.last_track_msb << 8) | di.last_track_lsb;
- if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
- goto use_last_written;
- /* if this track is blank, try the previous. */
- if (ti.blank) {
- last_track--;
- if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
- goto use_last_written;
- }
- /* if next recordable address field is valid, use it. */
- if (ti.nwa_v)
- *next_writable = be32_to_cpu(ti.next_writable);
- else
- goto use_last_written;
- return 0;
- use_last_written:
- if ((ret = cdrom_get_last_written(dev, next_writable))) {
- *next_writable = 0;
- return ret;
- } else {
- *next_writable += 7;
- return 0;
- }
- }
- EXPORT_SYMBOL(cdrom_get_disc_info);
- EXPORT_SYMBOL(cdrom_get_track_info);
- EXPORT_SYMBOL(cdrom_get_next_writable);
- EXPORT_SYMBOL(cdrom_get_last_written);
- EXPORT_SYMBOL(cdrom_count_tracks);
- 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_select_disc);
- EXPORT_SYMBOL(cdrom_mode_select);
- EXPORT_SYMBOL(cdrom_mode_sense);
- EXPORT_SYMBOL(init_cdrom_command);
- EXPORT_SYMBOL(cdrom_find_device);
- #ifdef CONFIG_SYSCTL
- #define CDROM_STR_SIZE 1000
- 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;
- int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
- void *buffer, size_t *lenp)
- {
- int pos;
- struct cdrom_device_info *cdi;
- char *info = cdrom_sysctl_settings.info;
-
- if (!*lenp || (filp->f_pos && !write)) {
- *lenp = 0;
- return 0;
- }
- pos = sprintf(info, "CD-ROM information, " VERSION "n");
-
- pos += sprintf(info+pos, "ndrive name:t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%s", cdi->name);
- pos += sprintf(info+pos, "ndrive speed:t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", cdi->speed);
- pos += sprintf(info+pos, "ndrive # of slots:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", cdi->capacity);
- pos += sprintf(info+pos, "nCan close tray:t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_CLOSE_TRAY) != 0);
- pos += sprintf(info+pos, "nCan open tray:t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_OPEN_TRAY) != 0);
- pos += sprintf(info+pos, "nCan lock tray:t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_LOCK) != 0);
- pos += sprintf(info+pos, "nCan change speed:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_SELECT_SPEED) != 0);
- pos += sprintf(info+pos, "nCan select disk:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_SELECT_DISC) != 0);
- pos += sprintf(info+pos, "nCan read multisession:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_MULTI_SESSION) != 0);
- pos += sprintf(info+pos, "nCan read MCN:t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_MCN) != 0);
- pos += sprintf(info+pos, "nReports media changed:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_MEDIA_CHANGED) != 0);
- pos += sprintf(info+pos, "nCan play audio:t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_PLAY_AUDIO) != 0);
- pos += sprintf(info+pos, "nCan write CD-R:t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_CD_R) != 0);
- pos += sprintf(info+pos, "nCan write CD-RW:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_CD_RW) != 0);
- pos += sprintf(info+pos, "nCan read DVD:t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_DVD) != 0);
- pos += sprintf(info+pos, "nCan write DVD-R:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_DVD_R) != 0);
- pos += sprintf(info+pos, "nCan write DVD-RAM:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "t%d", CDROM_CAN(CDC_DVD_RAM) != 0);
- strcpy(info+pos,"nn");
-
- return proc_dostring(ctl, write, filp, buffer, lenp);
- }
- /* 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. */
- void cdrom_update_settings(void)
- {
- struct cdrom_device_info *cdi;
- for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) {
- 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;
- }
- }
- static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
- void *buffer, size_t *lenp)
- {
- int *valp = ctl->data;
- int val = *valp;
- int ret;
-
- ret = proc_dointvec(ctl, write, filp, buffer, lenp);
- if (write && *valp != val) {
-
- /* we only care for 1 or 0. */
- if (*valp)
- *valp = 1;
- else
- *valp = 0;
- switch (ctl->ctl_name) {
- case DEV_CDROM_AUTOCLOSE: {
- if (valp == &cdrom_sysctl_settings.autoclose)
- autoclose = cdrom_sysctl_settings.autoclose;
- break;
- }
- case DEV_CDROM_AUTOEJECT: {
- if (valp == &cdrom_sysctl_settings.autoeject)
- autoeject = cdrom_sysctl_settings.autoeject;
- break;
- }
- case DEV_CDROM_DEBUG: {
- if (valp == &cdrom_sysctl_settings.debug)
- debug = cdrom_sysctl_settings.debug;
- break;
- }
- case DEV_CDROM_LOCK: {
- if (valp == &cdrom_sysctl_settings.lock)
- lockdoor = cdrom_sysctl_settings.lock;
- break;
- }
- case DEV_CDROM_CHECK_MEDIA: {
- if (valp == &cdrom_sysctl_settings.check)
- check_media_type = cdrom_sysctl_settings.check;
- break;
- }
- }
- /* 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 */
- ctl_table cdrom_table[] = {
- {DEV_CDROM_INFO, "info", &cdrom_sysctl_settings.info,
- CDROM_STR_SIZE, 0444, NULL, &cdrom_sysctl_info},
- {DEV_CDROM_AUTOCLOSE, "autoclose", &cdrom_sysctl_settings.autoclose,
- sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
- {DEV_CDROM_AUTOEJECT, "autoeject", &cdrom_sysctl_settings.autoeject,
- sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
- {DEV_CDROM_DEBUG, "debug", &cdrom_sysctl_settings.debug,
- sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
- {DEV_CDROM_LOCK, "lock", &cdrom_sysctl_settings.lock,
- sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
- {DEV_CDROM_CHECK_MEDIA, "check_media", &cdrom_sysctl_settings.check,
- sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
- {0}
- };
- ctl_table cdrom_cdrom_table[] = {
- {DEV_CDROM, "cdrom", NULL, 0, 0555, cdrom_table},
- {0}
- };
- /* Make sure that /proc/sys/dev is there */
- ctl_table cdrom_root_table[] = {
- #ifdef CONFIG_PROC_FS
- {CTL_DEV, "dev", NULL, 0, 0555, cdrom_cdrom_table},
- #endif /* CONFIG_PROC_FS */
- {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, 1);
- cdrom_root_table->child->de->owner = THIS_MODULE;
- /* 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);
- }
- #endif /* CONFIG_SYSCTL */
- static int __init cdrom_init(void)
- {
- #ifdef CONFIG_SYSCTL
- cdrom_sysctl_register();
- #endif
- if (!devfs_handle)
- devfs_handle = devfs_mk_dir(NULL, "cdroms", NULL);
- return 0;
- }
- static void __exit cdrom_exit(void)
- {
- printk(KERN_INFO "Uniform CD-ROM driver unloadedn");
- #ifdef CONFIG_SYSCTL
- cdrom_sysctl_unregister();
- #endif
- devfs_unregister(devfs_handle);
- }
- module_init(cdrom_init);
- module_exit(cdrom_exit);
- MODULE_LICENSE("GPL");