/* 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/malloc.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 cdrom_open(struct inode *ip, struct file *fp);
static int cdrom_release(struct inode *ip, struct file *fp);
static int cdrom_ioctl(struct inode *ip, struct file *fp,
unsigned int cmd, unsigned long arg);
static int cdrom_media_changed(kdev_t dev);
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;
struct block_device_operations cdrom_fops =
{
open: cdrom_open,
release: cdrom_release,
ioctl: cdrom_ioctl,
check_media_change: cdrom_media_changed,
};
/* 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)
350 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 */
char vname[16];
static unsigned int cdrom_counter;
359 cdinfo(CD_OPEN, "entering register_cdrom\n");
361 if (major < 0 || major >= MAX_BLKDEV)
362 return -1;
363 if (cdo->open == NULL || cdo->release == NULL)
364 return -2;
365 if ( !banner_printed ) {
printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
banner_printed = 1;
#ifdef CONFIG_SYSCTL
cdrom_sysctl_register();
#endif /* CONFIG_SYSCTL */
}
372 ENSURE(drive_status, CDC_DRIVE_STATUS );
373 ENSURE(media_changed, CDC_MEDIA_CHANGED);
374 ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
375 ENSURE(lock_door, CDC_LOCK);
376 ENSURE(select_speed, CDC_SELECT_SPEED);
377 ENSURE(get_last_session, CDC_MULTI_SESSION);
378 ENSURE(get_mcn, CDC_MCN);
379 ENSURE(reset, CDC_RESET);
380 ENSURE(audio_ioctl, CDC_PLAY_AUDIO);
381 ENSURE(dev_ioctl, CDC_IOCTLS);
382 ENSURE(generic_packet, CDC_GENERIC_PACKET);
cdi->mc_flags = 0;
cdo->n_minors = 0;
cdi->options = CDO_USE_FFLAGS;
387 if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
cdi->options |= (int) CDO_AUTO_CLOSE;
389 if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY))
cdi->options |= (int) CDO_AUTO_EJECT;
391 if (lockdoor==1)
cdi->options |= (int) CDO_LOCK;
393 if (check_media_type==1)
cdi->options |= (int) CDO_CHECK_TYPE;
396 if (!devfs_handle)
devfs_handle = devfs_mk_dir (NULL, "cdroms", NULL);
sprintf (vname, "cdrom%u", cdrom_counter++);
399 if (cdi->de) {
int pos;
devfs_handle_t slave;
char rname[64];
pos = devfs_generate_path (cdi->de, rname + 3,
sizeof rname - 3);
406 if (pos >= 0) {
strncpy (rname + pos, "../", 3);
devfs_mk_symlink (devfs_handle, vname,
DEVFS_FL_DEFAULT,
rname + pos, &slave, NULL);
devfs_auto_unregister (cdi->de, slave);
}
}
414 else {
cdi->de =
devfs_register (devfs_handle, vname, DEVFS_FL_DEFAULT,
MAJOR (cdi->dev), MINOR (cdi->dev),
S_IFBLK | S_IRUGO | S_IWUGO,
&cdrom_fops, NULL);
}
421 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
cdi->next = topCdromPtr;
topCdromPtr = cdi;
424 return 0;
}
#undef ENSURE
428 int unregister_cdrom(struct cdrom_device_info *unreg)
{
struct cdrom_device_info *cdi, *prev;
int major = MAJOR(unreg->dev);
433 cdinfo(CD_OPEN, "entering unregister_cdrom\n");
435 if (major < 0 || major >= MAX_BLKDEV)
436 return -1;
prev = NULL;
cdi = topCdromPtr;
440 while (cdi != NULL && cdi->dev != unreg->dev) {
prev = cdi;
cdi = cdi->next;
}
445 if (cdi == NULL)
446 return -2;
447 if (prev)
prev->next = cdi->next;
449 else
topCdromPtr = cdi->next;
cdi->ops->n_minors--;
devfs_unregister (cdi->de);
453 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
454 return 0;
}
457 struct cdrom_device_info *cdrom_find_device(kdev_t dev)
{
struct cdrom_device_info *cdi;
cdi = topCdromPtr;
462 while (cdi != NULL && cdi->dev != dev)
cdi = cdi->next;
465 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.
*/
static
477 int cdrom_open(struct inode *ip, struct file *fp)
{
struct cdrom_device_info *cdi;
kdev_t dev = ip->i_rdev;
int ret;
483 cdinfo(CD_OPEN, "entering cdrom_open\n");
484 if ((cdi = cdrom_find_device(dev)) == NULL)
485 return -ENODEV;
487 if ((fp->f_mode & FMODE_WRITE) && !CDROM_CAN(CDC_DVD_RAM))
488 return -EROFS;
/* if this was a O_NONBLOCK open and we should honor the flags,
* do a quick open without drive/disc integrity checks. */
492 if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS))
ret = cdi->ops->open(cdi, 1);
494 else
ret = open_for_data(cdi);
497 if (!ret) cdi->use_count++;
499 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(dev);
503 return ret;
}
static
507 int open_for_data(struct cdrom_device_info * cdi)
{
int ret;
struct cdrom_device_ops *cdo = cdi->ops;
tracktype tracks;
512 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! */
515 if (cdo->drive_status != NULL) {
ret = cdo->drive_status(cdi, CDSL_CURRENT);
517 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
518 if (ret == CDS_TRAY_OPEN) {
519 cdinfo(CD_OPEN, "the tray is open...\n");
/* can/may i close it? */
if (CDROM_CAN(CDC_CLOSE_TRAY) &&
522 cdi->options & CDO_AUTO_CLOSE) {
523 cdinfo(CD_OPEN, "trying to close the tray.\n");
ret=cdo->tray_move(cdi,0);
525 if (ret) {
526 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;
533 goto clean_up_and_return;
}
535 } else {
536 cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n");
ret=-ENOMEDIUM;
538 goto clean_up_and_return;
}
/* Ok, the door should be closed now.. Check again */
ret = cdo->drive_status(cdi, CDSL_CURRENT);
542 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
543 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
544 cdinfo(CD_OPEN, "tray might not contain a medium.\n");
ret=-ENOMEDIUM;
546 goto clean_up_and_return;
}
548 cdinfo(CD_OPEN, "the tray is now closed.\n");
}
550 if (ret!=CDS_DISC_OK) {
ret = -ENOMEDIUM;
552 goto clean_up_and_return;
}
}
cdrom_count_tracks(cdi, &tracks);
556 if (tracks.error == CDS_NO_DISC) {
557 cdinfo(CD_OPEN, "bummer. no disc.\n");
ret=-ENOMEDIUM;
559 goto clean_up_and_return;
}
/* CD-Players which don't use O_NONBLOCK, workman
* for example, need bit CDO_CHECK_TYPE cleared! */
563 if (tracks.data==0) {
564 if (cdi->options & CDO_CHECK_TYPE) {
/* give people a warning shot, now that CDO_CHECK_TYPE
is the default case! */
567 cdinfo(CD_OPEN, "bummer. wrong media type.\n");
568 cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
(unsigned int)current->pid);
ret=-EMEDIUMTYPE;
571 goto clean_up_and_return;
}
573 else {
574 cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n");
}
}
578 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 */
582 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... */
586 if (ret) {
587 cdinfo(CD_OPEN, "open device failed.\n");
588 goto clean_up_and_return;
}
590 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
cdo->lock_door(cdi, 1);
592 cdinfo(CD_OPEN, "door locked.\n");
}
594 cdinfo(CD_OPEN, "device opened successfully.\n");
595 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:
603 cdinfo(CD_WARNING, "open failed.\n");
604 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
cdo->lock_door(cdi, 0);
606 cdinfo(CD_OPEN, "door unlocked.\n");
}
608 return ret;
}
/* This code is similar to that in open_for_data. The routine is called
whenever an audio play operation is requested.
*/
614 int check_for_audio_disc(struct cdrom_device_info * cdi,
struct cdrom_device_ops * cdo)
{
int ret;
tracktype tracks;
619 cdinfo(CD_OPEN, "entering check_for_audio_disc\n");
620 if (!(cdi->options & CDO_CHECK_TYPE))
621 return 0;
622 if (cdo->drive_status != NULL) {
ret = cdo->drive_status(cdi, CDSL_CURRENT);
624 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
625 if (ret == CDS_TRAY_OPEN) {
626 cdinfo(CD_OPEN, "the tray is open...\n");
/* can/may i close it? */
if (CDROM_CAN(CDC_CLOSE_TRAY) &&
629 cdi->options & CDO_AUTO_CLOSE) {
630 cdinfo(CD_OPEN, "trying to close the tray.\n");
ret=cdo->tray_move(cdi,0);
632 if (ret) {
633 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.*/
639 return -ENOMEDIUM;
}
641 } else {
642 cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n");
643 return -ENOMEDIUM;
}
/* Ok, the door should be closed now.. Check again */
ret = cdo->drive_status(cdi, CDSL_CURRENT);
647 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
648 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
649 return -ENOMEDIUM;
}
651 if (ret!=CDS_DISC_OK) {
652 cdinfo(CD_OPEN, "bummer. disc isn't ready.\n");
653 return -EIO;
}
655 cdinfo(CD_OPEN, "the tray is now closed.\n");
}
}
cdrom_count_tracks(cdi, &tracks);
659 if (tracks.error)
660 return(tracks.error);
662 if (tracks.audio==0)
663 return -EMEDIUMTYPE;
665 return 0;
}
/* Admittedly, the logic below could be performed in a nicer way. */
static
671 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;
678 cdinfo(CD_CLOSE, "entering cdrom_release\n");
680 if (cdi->use_count > 0)
cdi->use_count--;
682 if (cdi->use_count == 0)
683 cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
if (cdi->use_count == 0 &&
685 cdo->capability & CDC_LOCK && !keeplocked) {
686 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);
692 if (cdi->use_count == 0) { /* last process that closes dev*/
if (opened_for_data &&
694 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
cdo->tray_move(cdi, 1);
}
697 return 0;
}
700 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
*/
712 if (cdi->sanyo_slot) {
buf->hdr.nslots = 3;
buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
715 for (length = 0; length < 3; length++) {
buf->slots[length].disc_present = 1;
buf->slots[length].change = 0;
}
719 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;
729 return cdo->generic_packet(cdi, &cgc);
}
732 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
{
struct cdrom_changer_info info;
int ret;
737 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
738 if (cdi->sanyo_slot)
739 return CDS_NO_INFO;
741 if ((ret = cdrom_read_mech_status(cdi, &info)))
742 return ret;
744 if (info.slots[slot].disc_present)
745 return CDS_DISC_OK;
746 else
747 return CDS_NO_DISC;
}
/* Return the number of slots for an ATAPI/SCSI cdrom,
* return 1 if not a changer.
*/
754 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
{
int status;
int nslots = 1;
struct cdrom_changer_info info;
760 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
/* cdrom_read_mech_status requires a valid value for capacity: */
cdi->capacity = 0;
764 if ((status = cdrom_read_mech_status(cdi, &info)) == 0)
nslots = info.hdr.nslots;
767 return nslots;
}
/* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
772 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
{
struct cdrom_generic_command cgc;
776 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
777 if (cdi->sanyo_slot && slot < 0)
778 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;
/* 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. */
788 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;
}
795 return cdi->ops->generic_packet(cdi, &cgc);
}
798 int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
{
struct cdrom_changer_info info;
int curslot;
int ret;
804 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
805 if (!CDROM_CAN(CDC_SELECT_DISC))
806 return -EDRIVE_CANT_DO_THIS;
(void) cdi->ops->media_changed(cdi, slot);
810 if (slot == CDSL_NONE) {
/* set media changed bits, on both queues */
cdi->mc_flags = 0x3;
813 return cdrom_load_unload(cdi, -1);
}
816 if ((ret = cdrom_read_mech_status(cdi, &info)))
817 return ret;
curslot = info.hdr.curslot;
821 if (cdi->use_count > 1 || keeplocked) {
822 if (slot == CDSL_CURRENT) {
823 return curslot;
824 } else {
825 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. */
834 if (slot == CDSL_CURRENT)
slot = curslot;
/* set media changed bits on both queues */
cdi->mc_flags = 0x3;
839 if ((ret = cdrom_load_unload(cdi, slot)))
840 return ret;
842 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
852 int media_changed(struct cdrom_device_info *cdi, int queue)
{
unsigned int mask = (1 << (queue & 1));
int ret = !!(cdi->mc_flags & mask);
857 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
858 return ret;
/* changed since last call? */
860 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 */
865 return ret;
}
868 static 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. */
874 if (cdi == NULL || cdi->ops->media_changed == NULL)
875 return 0;
876 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
877 return 0;
878 return media_changed(cdi, 0);
}
/* badly broken, I know. Is due for a fixup anytime. */
882 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;
892 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
893 if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
tracks->error=CDS_NO_INFO;
895 return;
}
/* Grab the TOC header so we can see how many tracks there are */
898 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
899 if (ret == -ENOMEDIUM)
tracks->error = CDS_NO_DISC;
901 else
tracks->error = CDS_NO_INFO;
903 return;
}
/* check what type of tracks are on this disc */
entry.cdte_format = CDROM_MSF;
907 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
entry.cdte_track = i;
909 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
tracks->error=CDS_NO_INFO;
911 return;
}
913 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
914 if (entry.cdte_format == 0x10)
tracks->cdi++;
916 else if (entry.cdte_format == 0x20)
tracks->xa++;
918 else
tracks->data++;
920 } else
tracks->audio++;
922 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
i, entry.cdte_format, entry.cdte_ctrl);
}
925 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
947 void sanitize_format(union cdrom_addr *addr,
u_char * curr, u_char requested)
{
950 if (*curr == requested)
951 return; /* nothing to be done! */
952 if (requested == CDROM_LBA) {
addr->lba = (int) addr->msf.frame +
75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
955 } 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;
}
966 void init_cdrom_command(struct cdrom_generic_command *cgc, void *buf, int len,
int type)
{
memset(cgc, 0, sizeof(struct cdrom_generic_command));
970 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))
983 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);
987 switch (type) {
988 case 0: case 8: case 5: {
cgc->buflen = 8;
990 break;
}
992 case 1: {
cgc->buflen = 16;
994 break;
}
996 case 2: case 4: {
cgc->buflen = 12;
998 break;
}
}
cgc->cmd[9] = cgc->buflen;
cgc->data_direction = CGC_DATA_READ;
}
1005 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);
1009 switch (type) {
1010 case 1: {
cgc->buflen = 16;
1012 break;
}
1014 case 3: {
cgc->buflen = 12;
1016 break;
}
1018 case 6: {
cgc->buflen = 8;
1020 break;
}
}
cgc->cmd[9] = cgc->buflen;
cgc->data_direction = CGC_DATA_WRITE;
}
1027 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);
1038 switch (ai->type) {
/* LU data send */
1040 case DVD_LU_SEND_AGID:
1041 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
setup_report_key(&cgc, ai->lsa.agid, 0);
1044 if ((ret = cdo->generic_packet(cdi, &cgc)))
1045 return ret;
ai->lsa.agid = buf[7] >> 6;
/* Returning data, let host change state */
1049 break;
1051 case DVD_LU_SEND_KEY1:
1052 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
setup_report_key(&cgc, ai->lsk.agid, 2);
1055 if ((ret = cdo->generic_packet(cdi, &cgc)))
1056 return ret;
copy_key(ai->lsk.key, &buf[4]);
/* Returning data, let host change state */
1060 break;
1062 case DVD_LU_SEND_CHALLENGE:
1063 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
setup_report_key(&cgc, ai->lsc.agid, 1);
1066 if ((ret = cdo->generic_packet(cdi, &cgc)))
1067 return ret;
copy_chal(ai->lsc.chal, &buf[4]);
/* Returning data, let host change state */
1071 break;
/* Post-auth key */
1074 case DVD_LU_SEND_TITLE_KEY:
1075 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
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;
1082 if ((ret = cdo->generic_packet(cdi, &cgc)))
1083 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 */
1090 break;
1092 case DVD_LU_SEND_ASF:
1093 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
setup_report_key(&cgc, ai->lsasf.agid, 5);
1096 if ((ret = cdo->generic_packet(cdi, &cgc)))
1097 return ret;
ai->lsasf.asf = buf[7] & 1;
1100 break;
/* LU data receive (LU changes state) */
1103 case DVD_HOST_SEND_CHALLENGE:
1104 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);
1109 if ((ret = cdo->generic_packet(cdi, &cgc)))
1110 return ret;
ai->type = DVD_LU_SEND_KEY1;
1113 break;
1115 case DVD_HOST_SEND_KEY2:
1116 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);
1121 if ((ret = cdo->generic_packet(cdi, &cgc))) {
ai->type = DVD_AUTH_FAILURE;
1123 return ret;
}
ai->type = DVD_AUTH_ESTABLISHED;
1126 break;
/* Misc */
1129 case DVD_INVALIDATE_AGID:
1130 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1132 if ((ret = cdo->generic_packet(cdi, &cgc)))
1133 return ret;
1134 break;
/* Get region settings */
1137 case DVD_LU_SEND_RPC_STATE:
1138 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;
1143 if ((ret = cdo->generic_packet(cdi, &cgc)))
1144 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;
1151 break;
/* Set region settings */
1154 case DVD_HOST_SEND_RPC_STATE:
1155 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
setup_send_key(&cgc, 0, 6);
buf[1] = 6;
buf[4] = ai->hrpcs.pdrc;
1160 if ((ret = cdo->generic_packet(cdi, &cgc)))
1161 return ret;
1162 break;
1164 default:
1165 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1166 return -ENOTTY;
}
1169 return 0;
}
1172 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s)
{
int ret, i;
u_char buf[4 + 4 * 20], *base;
struct dvd_layer *layer;
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->physical.layer_num;
cgc.cmd[7] = s->type;
cgc.cmd[9] = cgc.buflen & 0xff;
1186 if ((ret = cdo->generic_packet(cdi, &cgc)))
1187 return ret;
base = &buf[4];
layer = &s->physical.layer[0];
/* place the data... really ugly, but at least we won't have to
worry about endianess in userspace or here. */
1194 for (i = 0; i < 4; ++i, base += 20, ++layer) {
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;
}
1211 return 0;
}
1214 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;
1228 if ((ret = cdo->generic_packet(cdi, &cgc)))
1229 return ret;
s->copyright.cpst = buf[4];
s->copyright.rmi = buf[5];
1234 return 0;
}
1237 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;
1246 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1247 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;
1256 if (!(ret = cdo->generic_packet(cdi, &cgc)))
memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
kfree(buf);
1260 return ret;
}
1263 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;
1275 if ((ret = cdo->generic_packet(cdi, &cgc)))
1276 return ret;
s->bca.len = buf[0] << 8 | buf[1];
1279 if (s->bca.len < 12 || s->bca.len > 188) {
1280 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1281 return -EIO;
}
memcpy(s->bca.value, &buf[4], s->bca.len);
1285 return 0;
}
1288 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;
1297 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1298 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;
1306 if ((ret = cdo->generic_packet(cdi, &cgc))) {
kfree(buf);
1308 return ret;
}
s->manufact.len = buf[0] << 8 | buf[1];
1312 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1313 cdinfo(CD_WARNING, "Received invalid manufacture info length"
" (%d)\n", s->bca.len);
ret = -EIO;
1316 } else {
memcpy(s->manufact.value, &buf[4], s->manufact.len);
}
kfree(buf);
1321 return ret;
}
1324 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
{
1326 switch (s->type) {
1327 case DVD_STRUCT_PHYSICAL:
1328 return dvd_read_physical(cdi, s);
1330 case DVD_STRUCT_COPYRIGHT:
1331 return dvd_read_copyright(cdi, s);
1333 case DVD_STRUCT_DISCKEY:
1334 return dvd_read_disckey(cdi, s);
1336 case DVD_STRUCT_BCA:
1337 return dvd_read_bca(cdi, s);
1339 case DVD_STRUCT_MANUFACT:
1340 return dvd_read_manufact(cdi, s);
1342 default:
1343 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
s->type);
1345 return -EINVAL;
}
}
1349 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;
1362 return cdo->generic_packet(cdi, cgc);
}
1365 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;
1377 return cdo->generic_packet(cdi, cgc);
}
1380 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;
1395 if ((ret = cdo->generic_packet(cdi, &cgc)))
1396 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];
1411 return 0;
}
/*
* Specific READ_10 interface
*/
1417 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;
1433 return cdo->generic_packet(cdi, cgc);
}
/* very generic interface for reading the various types of blocks */
1437 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 */
1459 switch (blksize) {
1460 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
1461 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
1462 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
1463 default : cgc->cmd[9] = 0x10;
}
1466 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().
*/
1473 static 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. */
1483 switch (cmd) {
1484 case CDROMMULTISESSION: {
struct cdrom_multisession ms_info;
u_char requested_format;
1487 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
1488 if (!(cdo->capability & CDC_MULTI_SESSION))
1489 return -ENOSYS;
1490 IOCTL_IN(arg, struct cdrom_multisession, ms_info);
requested_format = ms_info.addr_format;
if (!((requested_format == CDROM_MSF) ||
1493 (requested_format == CDROM_LBA)))
1494 return -EINVAL;
ms_info.addr_format = CDROM_LBA;
1496 if ((ret=cdo->get_last_session(cdi, &ms_info)))
1497 return ret;
sanitize_format(&ms_info.addr, &ms_info.addr_format,
requested_format);
1500 IOCTL_OUT(arg, struct cdrom_multisession, ms_info);
1501 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
1502 return 0;
}
1505 case CDROMEJECT: {
1506 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
1507 if (!CDROM_CAN(CDC_OPEN_TRAY))
1508 return -ENOSYS;
1509 if (cdi->use_count != 1 || keeplocked)
1510 return -EBUSY;
1511 if (CDROM_CAN(CDC_LOCK))
1512 if ((ret=cdo->lock_door(cdi, 0)))
1513 return ret;
1515 return cdo->tray_move(cdi, 1);
}
1518 case CDROMCLOSETRAY: {
1519 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
1520 if (!CDROM_CAN(CDC_CLOSE_TRAY))
1521 return -ENOSYS;
1522 return cdo->tray_move(cdi, 0);
}
1525 case CDROMEJECT_SW: {
1526 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
1527 if (!CDROM_CAN(CDC_OPEN_TRAY))
1528 return -ENOSYS;
1529 if (keeplocked)
1530 return -EBUSY;
cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
1532 if (arg)
cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
1534 return 0;
}
1537 case CDROM_MEDIA_CHANGED: {
struct cdrom_changer_info info;
1540 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
1541 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1542 return -ENOSYS;
/* cannot select disc or select current disc */
1545 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
1546 return media_changed(cdi, 1);
1548 if ((unsigned int)arg >= cdi->capacity)
1549 return -EINVAL;
1551 if ((ret = cdrom_read_mech_status(cdi, &info)))
1552 return ret;
1554 return info.slots[arg].change;
}
1557 case CDROM_SET_OPTIONS: {
1558 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... */
1561 switch (arg) {
1562 case CDO_USE_FFLAGS:
1563 case CDO_CHECK_TYPE:
1564 break;
1565 case CDO_LOCK:
1566 if (!CDROM_CAN(CDC_LOCK))
1567 return -ENOSYS;
1568 break;
1569 case 0:
1570 return cdi->options;
/* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
1572 default:
1573 if (!CDROM_CAN(arg))
1574 return -ENOSYS;
}
cdi->options |= (int) arg;
1577 return cdi->options;
}
1580 case CDROM_CLEAR_OPTIONS: {
1581 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
cdi->options &= ~(int) arg;
1583 return cdi->options;
}
1586 case CDROM_SELECT_SPEED: {
1587 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
1588 if (!CDROM_CAN(CDC_SELECT_SPEED))
1589 return -ENOSYS;
1590 return cdo->select_speed(cdi, arg);
}
1593 case CDROM_SELECT_DISC: {
1594 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
1595 if (!CDROM_CAN(CDC_SELECT_DISC))
1596 return -ENOSYS;
1598 if ((arg != CDSL_CURRENT) && (arg != CDSL_NONE))
1599 if ((int)arg >= cdi->capacity)
1600 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...
*/
1607 if (cdo->select_disc != NULL)
1608 return cdo->select_disc(cdi, arg);
/* no driver specific select_disc(), call our own */
1611 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
1612 return cdrom_select_disc(cdi, arg);
}
1615 case CDROMRESET: {
1616 if (!capable(CAP_SYS_ADMIN))
1617 return -EACCES;
1618 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
1619 if (!CDROM_CAN(CDC_RESET))
1620 return -ENOSYS;
1621 return cdo->reset(cdi);
}
1624 case CDROM_LOCKDOOR: {
1625 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
1626 if (!CDROM_CAN(CDC_LOCK))
1627 return -EDRIVE_CANT_DO_THIS;
keeplocked = arg ? 1 : 0;
/* don't unlock the door on multiple opens,but allow root
* to do so */
1631 if ((cdi->use_count != 1) && !arg && !capable(CAP_SYS_ADMIN))
1632 return -EBUSY;
1633 return cdo->lock_door(cdi, arg);
}
1636 case CDROM_DEBUG: {
1637 if (!capable(CAP_SYS_ADMIN))
1638 return -EACCES;
1639 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
debug = arg ? 1 : 0;
1641 return debug;
}
1644 case CDROM_GET_CAPABILITY: {
1645 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
1646 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!
*/
1654 case CDROM_GET_MCN: {
struct cdrom_mcn mcn;
1656 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
1657 if (!(cdo->capability & CDC_MCN))
1658 return -ENOSYS;
1659 if ((ret=cdo->get_mcn(cdi, &mcn)))
1660 return ret;
1661 IOCTL_OUT(arg, struct cdrom_mcn, mcn);
1662 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
1663 return 0;
}
1666 case CDROM_DRIVE_STATUS: {
1667 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
1668 if (!(cdo->capability & CDC_DRIVE_STATUS))
1669 return -ENOSYS;
1670 if (!CDROM_CAN(CDC_SELECT_DISC))
1671 return cdo->drive_status(cdi, CDSL_CURRENT);
1672 if ((arg == CDSL_CURRENT) || (arg == CDSL_NONE))
1673 return cdo->drive_status(cdi, CDSL_CURRENT);
1674 if (((int)arg >= cdi->capacity))
1675 return -EINVAL;
1676 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
*/
1696 case CDROM_DISC_STATUS: {
tracktype tracks;
1698 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
cdrom_count_tracks(cdi, &tracks);
1700 if (tracks.error)
1701 return(tracks.error);
/* Policy mode on */
1704 if (tracks.audio > 0) {
1705 if (tracks.data==0 && tracks.cdi==0 && tracks.xa==0)
1706 return CDS_AUDIO;
1707 else
1708 return CDS_MIXED;
}
1710 if (tracks.cdi > 0) return CDS_XA_2_2;
1711 if (tracks.xa > 0) return CDS_XA_2_1;
1712 if (tracks.data > 0) return CDS_DATA_1;
/* Policy mode off */
1715 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
1716 return CDS_NO_INFO;
}
1719 case CDROM_CHANGER_NSLOTS: {
1720 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
1721 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. */
1729 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
ret = mmc_ioctl(cdi, cmd, arg);
1731 if (ret != -ENOTTY) {
1732 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. */
1739 switch (cmd) {
1740 case CDROMSUBCHNL: {
struct cdrom_subchnl q;
u_char requested, back;
1743 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1744 return -ENOSYS;
/* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
1746 IOCTL_IN(arg, struct cdrom_subchnl, q);
requested = q.cdsc_format;
if (!((requested == CDROM_MSF) ||
1749 (requested == CDROM_LBA)))
1750 return -EINVAL;
q.cdsc_format = CDROM_MSF;
1752 if ((ret=cdo->audio_ioctl(cdi, cmd, &q)))
1753 return ret;
back = q.cdsc_format; /* local copy */
sanitize_format(&q.cdsc_absaddr, &back, requested);
sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
1757 IOCTL_OUT(arg, struct cdrom_subchnl, q);
/* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
1759 return 0;
}
1761 case CDROMREADTOCHDR: {
struct cdrom_tochdr header;
1763 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1764 return -ENOSYS;
/* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
1766 IOCTL_IN(arg, struct cdrom_tochdr, header);
1767 if ((ret=cdo->audio_ioctl(cdi, cmd, &header)))
1768 return ret;
1769 IOCTL_OUT(arg, struct cdrom_tochdr, header);
/* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
1771 return 0;
}
1773 case CDROMREADTOCENTRY: {
struct cdrom_tocentry entry;
u_char requested_format;
1776 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1777 return -ENOSYS;
/* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
1779 IOCTL_IN(arg, struct cdrom_tocentry, entry);
requested_format = entry.cdte_format;
if (!((requested_format == CDROM_MSF) ||
1782 (requested_format == CDROM_LBA)))
1783 return -EINVAL;
/* make interface to low-level uniform */
entry.cdte_format = CDROM_MSF;
1786 if ((ret=cdo->audio_ioctl(cdi, cmd, &entry)))
1787 return ret;
sanitize_format(&entry.cdte_addr,
&entry.cdte_format, requested_format);
1790 IOCTL_OUT(arg, struct cdrom_tocentry, entry);
/* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
1792 return 0;
}
1794 case CDROMPLAYMSF: {
struct cdrom_msf msf;
1796 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1797 return -ENOSYS;
1798 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
1799 IOCTL_IN(arg, struct cdrom_msf, msf);
1800 return cdo->audio_ioctl(cdi, cmd, &msf);
}
1802 case CDROMPLAYTRKIND: {
struct cdrom_ti ti;
1804 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1805 return -ENOSYS;
1806 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
1807 IOCTL_IN(arg, struct cdrom_ti, ti);
1808 CHECKAUDIO;
1809 return cdo->audio_ioctl(cdi, cmd, &ti);
}
1811 case CDROMVOLCTRL: {
struct cdrom_volctrl volume;
1813 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1814 return -ENOSYS;
1815 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
1816 IOCTL_IN(arg, struct cdrom_volctrl, volume);
1817 return cdo->audio_ioctl(cdi, cmd, &volume);
}
1819 case CDROMVOLREAD: {
struct cdrom_volctrl volume;
1821 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1822 return -ENOSYS;
1823 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
1824 if ((ret=cdo->audio_ioctl(cdi, cmd, &volume)))
1825 return ret;
1826 IOCTL_OUT(arg, struct cdrom_volctrl, volume);
1827 return 0;
}
1829 case CDROMSTART:
1830 case CDROMSTOP:
1831 case CDROMPAUSE:
1832 case CDROMRESUME: {
1833 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1834 return -ENOSYS;
1835 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
1836 CHECKAUDIO;
1837 return cdo->audio_ioctl(cdi, cmd, NULL);
}
} /* switch */
/* do the device specific ioctls */
1842 if (CDROM_CAN(CDC_IOCTLS))
1843 return cdo->dev_ioctl(cdi, cmd, arg);
1845 return -ENOSYS;
}
static inline
1849 int msf_to_lba(char m, char s, char f)
{
1851 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
*/
1858 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;
1880 return cdo->generic_packet(cdi, &cgc);
}
1883 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;
1890 if (cgc->data_direction == CGC_DATA_UNKNOWN)
1891 return -EINVAL;
1893 if (cgc->buflen < 0 || cgc->buflen >= 131072)
1894 return -EINVAL;
1896 if ((ubuf = cgc->buffer)) {
cgc->buffer = kmalloc(cgc->buflen, GFP_KERNEL);
1898 if (cgc->buffer == NULL)
1899 return -ENOMEM;
}
usense = cgc->sense;
cgc->sense = &sense;
1904 if (usense && !access_ok(VERIFY_WRITE, usense, sizeof(*usense)))
1905 return -EFAULT;
1907 if (cgc->data_direction == CGC_DATA_READ) {
1908 if (!access_ok(VERIFY_READ, ubuf, cgc->buflen))
1909 return -EFAULT;
1910 } else if (cgc->data_direction == CGC_DATA_WRITE) {
1911 if (copy_from_user(cgc->buffer, ubuf, cgc->buflen)) {
kfree(cgc->buffer);
1913 return -EFAULT;
}
}
ret = cdi->ops->generic_packet(cdi, cgc);
__copy_to_user(usense, cgc->sense, sizeof(*usense));
1919 if (!ret && cgc->data_direction == CGC_DATA_READ)
__copy_to_user(ubuf, cgc->buffer, cgc->buflen);
kfree(cgc->buffer);
1922 return ret;
}
1925 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;
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() */
1938 switch (cmd) {
1939 case CDROMREADRAW:
1940 case CDROMREADMODE1:
1941 case CDROMREADMODE2: {
struct cdrom_msf msf;
int blocksize = 0, format = 0, lba;
1945 switch (cmd) {
1946 case CDROMREADRAW:
blocksize = CD_FRAMESIZE_RAW;
1948 break;
1949 case CDROMREADMODE1:
blocksize = CD_FRAMESIZE;
format = 2;
1952 break;
1953 case CDROMREADMODE2:
blocksize = CD_FRAMESIZE_RAW0;
1955 break;
}
1957 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!! */
1960 if (lba < 0)
1961 return -EINVAL;
cgc.buffer = (char *) kmalloc(blocksize, GFP_KERNEL);
1963 if (cgc.buffer == NULL)
1964 return -ENOMEM;
cgc.data_direction = CGC_DATA_READ;
ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
1967 if (ret) {
/*
* SCSI-II devices are not required to support
* READ_CD, so let's try switching block size
*/
/* FIXME: switch back again... */
1973 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
kfree(cgc.buffer);
1975 return ret;
}
cgc.sense = NULL;
ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
ret |= cdrom_switch_blocksize(cdi, blocksize);
}
1981 if (!ret && copy_to_user((char *)arg, cgc.buffer, blocksize))
ret = -EFAULT;
kfree(cgc.buffer);
1984 return ret;
}
1986 case CDROMREADAUDIO: {
struct cdrom_read_audio ra;
int lba;
1990 IOCTL_IN(arg, struct cdrom_read_audio, ra);
1992 if (ra.addr_format == CDROM_MSF)
lba = msf_to_lba(ra.addr.msf.minute,
ra.addr.msf.second,
ra.addr.msf.frame);
1996 else if (ra.addr_format == CDROM_LBA)
lba = ra.addr.lba;
1998 else
1999 return -EINVAL;
/* FIXME: we need upper bound checking, too!! */
2002 if (lba < 0 || ra.nframes <= 0)
2003 return -EINVAL;
2005 if ((cgc.buffer = (char *) kmalloc(CD_FRAMESIZE_RAW, GFP_KERNEL)) == NULL)
2006 return -ENOMEM;
2008 if (!access_ok(VERIFY_WRITE, ra.buf, ra.nframes*CD_FRAMESIZE_RAW)) {
kfree(cgc.buffer);
2010 return -EFAULT;
}
cgc.data_direction = CGC_DATA_READ;
2013 while (ra.nframes > 0) {
ret = cdrom_read_block(cdi, &cgc, lba, 1, 1, CD_FRAMESIZE_RAW);
2015 if (ret) break;
__copy_to_user(ra.buf, cgc.buffer, CD_FRAMESIZE_RAW);
ra.buf += CD_FRAMESIZE_RAW;
ra.nframes--;
lba++;
}
kfree(cgc.buffer);
2022 return ret;
}
2024 case CDROMSUBCHNL: {
struct cdrom_subchnl q;
u_char requested, back;
2027 IOCTL_IN(arg, struct cdrom_subchnl, q);
requested = q.cdsc_format;
if (!((requested == CDROM_MSF) ||
2030 (requested == CDROM_LBA)))
2031 return -EINVAL;
q.cdsc_format = CDROM_MSF;
2033 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2034 return ret;
back = q.cdsc_format; /* local copy */
sanitize_format(&q.cdsc_absaddr, &back, requested);
sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2038 IOCTL_OUT(arg, struct cdrom_subchnl, q);
/* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2040 return 0;
}
2042 case CDROMPLAYMSF: {
struct cdrom_msf msf;
2044 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2045 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;
2054 return cdo->generic_packet(cdi, &cgc);
}
2056 case CDROMPLAYBLK: {
struct cdrom_blk blk;
2058 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2059 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;
2068 return cdo->generic_packet(cdi, &cgc);
}
2070 case CDROMVOLCTRL:
2071 case CDROMVOLREAD: {
struct cdrom_volctrl volctrl;
char mask[32];
unsigned short offset;
2075 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2077 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
cgc.buffer = buffer;
cgc.buflen = 24;
2081 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2082 return ret;
/* some drives have longer pages, adjust and reread. */
2085 if (buffer[1] > cgc.buflen) {
cgc.buflen = buffer[1] + 2;
if ((ret = cdrom_mode_sense(cdi, &cgc,
2088 GPMODE_AUDIO_CTL_PAGE, 0)))
2089 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 */
2098 if (cmd == CDROMVOLREAD) {
volctrl.channel0 = buffer[offset+9];
volctrl.channel1 = buffer[offset+11];
volctrl.channel2 = buffer[offset+13];
volctrl.channel3 = buffer[offset+15];
2103 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2104 return 0;
}
/* get the volume mask */
cgc.buffer = mask;
if ((ret = cdrom_mode_sense(cdi, &cgc,
2110 GPMODE_AUDIO_CTL_PAGE, 1)))
2111 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;
2120 return cdrom_mode_select(cdi, &cgc);
}
2123 case CDROMSTART:
2124 case CDROMSTOP: {
2125 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;
2130 return cdo->generic_packet(cdi, &cgc);
}
2133 case CDROMPAUSE:
2134 case CDROMRESUME: {
2135 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;
2139 return cdo->generic_packet(cdi, &cgc);
}
2142 case DVD_READ_STRUCT: {
dvd_struct *s;
int size = sizeof(dvd_struct);
2145 if (!CDROM_CAN(CDC_DVD))
2146 return -ENOSYS;
2147 if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL)
2148 return -ENOMEM;
2149 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
2150 if (copy_from_user(s, (dvd_struct *)arg, size)) {
kfree(s);
2152 return -EFAULT;
}
2154 if ((ret = dvd_read_struct(cdi, s))) {
kfree(s);
2156 return ret;
}
2158 if (copy_to_user((dvd_struct *)arg, s, size))
ret = -EFAULT;
kfree(s);
2161 return ret;
}
2164 case DVD_AUTH: {
dvd_authinfo ai;
2166 if (!CDROM_CAN(CDC_DVD))
2167 return -ENOSYS;
2168 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
2169 IOCTL_IN(arg, dvd_authinfo, ai);
2170 if ((ret = dvd_do_auth (cdi, &ai)))
2171 return ret;
2172 IOCTL_OUT(arg, dvd_authinfo, ai);
2173 return 0;
}
2176 case CDROM_SEND_PACKET: {
2177 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2178 return -ENOSYS;
2179 cdinfo(CD_DO_IOCTL, "entering CDROM_SEND_PACKET\n");
2180 IOCTL_IN(arg, struct cdrom_generic_command, cgc);
2181 return cdrom_do_cmd(cdi, &cgc);
}
2183 case CDROM_NEXT_WRITABLE: {
long next = 0;
2185 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
2186 if ((ret = cdrom_get_next_writable(dev, &next)))
2187 return ret;
2188 IOCTL_OUT(arg, long, next);
2189 return 0;
}
2191 case CDROM_LAST_WRITTEN: {
long last = 0;
2193 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
2194 if ((ret = cdrom_get_last_written(dev, &last)))
2195 return ret;
2196 IOCTL_OUT(arg, long, last);
2197 return 0;
}
} /* switch */
2201 return -ENOTTY;
}
2204 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;
2220 if ((ret = cdo->generic_packet(cdi, &cgc)))
2221 return ret;
cgc.cmd[8] = cgc.buflen = be16_to_cpu(ti->track_information_length) +
sizeof(ti->track_information_length);
2225 return cdo->generic_packet(cdi, &cgc);
}
/* requires CD R/RW */
2229 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;
2242 if ((ret = cdo->generic_packet(cdi, &cgc)))
2243 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);
2251 if (cgc.buflen > sizeof(disc_information))
cgc.buflen = sizeof(disc_information);
cgc.cmd[8] = cgc.buflen;
2255 return cdo->generic_packet(cdi, &cgc);
}
/* return the last written block on the CD-R media. this is for the udf
file system. */
2261 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;
2270 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2271 goto use_toc;
2273 if ((ret = cdrom_get_disc_info(dev, &di)))
2274 goto use_toc;
last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2277 if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
2278 goto use_toc;
/* if this track is blank, try the previous. */
2281 if (ti.blank) {
last_track--;
2283 if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
2284 goto use_toc;
}
/* if last recorded field is valid, return it. */
2288 if (ti.lra_v) {
*last_written = be32_to_cpu(ti.last_rec_address);
2290 } else {
/* make it up instead */
*last_written = be32_to_cpu(ti.track_start) +
be32_to_cpu(ti.track_size);
2294 if (ti.free_blocks)
*last_written -= (be32_to_cpu(ti.free_blocks) + 7);
}
2297 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;
2305 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))
2306 return ret;
sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
*last_written = toc.cdte_addr.lba;
2309 return 0;
}
/* return the next writable block. also for udf file system. */
2313 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;
2321 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2322 goto use_last_written;
2324 if ((ret = cdrom_get_disc_info(dev, &di)))
2325 goto use_last_written;
last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2328 if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
2329 goto use_last_written;
/* if this track is blank, try the previous. */
2332 if (ti.blank) {
last_track--;
2334 if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
2335 goto use_last_written;
}
/* if next recordable address field is valid, use it. */
2339 if (ti.nwa_v)
*next_writable = be32_to_cpu(ti.next_writable);
2341 else
2342 goto use_last_written;
2344 return 0;
use_last_written:
2347 if ((ret = cdrom_get_last_written(dev, next_writable))) {
*next_writable = 0;
2349 return ret;
2350 } else {
*next_writable += 7;
2352 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_fops);
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;
2384 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;
2391 if (!*lenp || (filp->f_pos && !write)) {
*lenp = 0;
2393 return 0;
}
pos = sprintf(info, "CD-ROM information, " VERSION "\n");
pos += sprintf(info+pos, "\ndrive name:\t");
2399 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
pos += sprintf(info+pos, "\t%s", cdi->name);
pos += sprintf(info+pos, "\ndrive speed:\t");
2403 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
pos += sprintf(info+pos, "\t%d", cdi->speed);
pos += sprintf(info+pos, "\ndrive # of slots:");
2407 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
pos += sprintf(info+pos, "\t%d", cdi->capacity);
pos += sprintf(info+pos, "\nCan close tray:\t");
2411 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");
2415 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");
2419 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:");
2423 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:");
2427 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:");
2431 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");
2435 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:");
2439 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");
2443 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");
2447 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:");
2451 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");
2455 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:");
2459 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:");
2463 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_RAM) != 0);
strcpy(info+pos,"\n\n");
2468 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. */
2475 void cdrom_update_settings(void)
{
struct cdrom_device_info *cdi;
2479 for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) {
2480 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
cdi->options |= CDO_AUTO_CLOSE;
2482 else if (!autoclose)
cdi->options &= ~CDO_AUTO_CLOSE;
2484 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
cdi->options |= CDO_AUTO_EJECT;
2486 else if (!autoeject)
cdi->options &= ~CDO_AUTO_EJECT;
2488 if (lockdoor && CDROM_CAN(CDC_LOCK))
cdi->options |= CDO_LOCK;
2490 else if (!lockdoor)
cdi->options &= ~CDO_LOCK;
2492 if (check_media_type)
cdi->options |= CDO_CHECK_TYPE;
2494 else
cdi->options &= ~CDO_CHECK_TYPE;
}
}
2499 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);
2508 if (write && *valp != val) {
/* we only care for 1 or 0. */
2511 if (*valp)
*valp = 1;
2513 else
*valp = 0;
2516 switch (ctl->ctl_name) {
2517 case DEV_CDROM_AUTOCLOSE: {
2518 if (valp == &cdrom_sysctl_settings.autoclose)
autoclose = cdrom_sysctl_settings.autoclose;
2520 break;
}
2522 case DEV_CDROM_AUTOEJECT: {
2523 if (valp == &cdrom_sysctl_settings.autoeject)
autoeject = cdrom_sysctl_settings.autoeject;
2525 break;
}
2527 case DEV_CDROM_DEBUG: {
2528 if (valp == &cdrom_sysctl_settings.debug)
debug = cdrom_sysctl_settings.debug;
2530 break;
}
2532 case DEV_CDROM_LOCK: {
2533 if (valp == &cdrom_sysctl_settings.lock)
lockdoor = cdrom_sysctl_settings.lock;
2535 break;
}
2537 case DEV_CDROM_CHECK_MEDIA: {
2538 if (valp == &cdrom_sysctl_settings.check)
check_media_type = cdrom_sysctl_settings.check;
2540 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();
}
2549 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;
2583 static void cdrom_sysctl_register(void)
{
static int initialized;
2587 if (initialized == 1)
2588 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;
}
2603 static void cdrom_sysctl_unregister(void)
{
unregister_sysctl_table(cdrom_sysctl_header);
}
#endif /* CONFIG_SYSCTL */
2610 static int __init cdrom_init(void)
{
#ifdef CONFIG_SYSCTL
cdrom_sysctl_register();
#endif
devfs_handle = devfs_mk_dir(NULL, "cdroms", NULL);
2616 return 0;
}
2619 static void __exit cdrom_exit(void)
{
printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
#ifdef CONFIG_SYSCTL
cdrom_sysctl_unregister();
#endif
devfs_unregister(devfs_handle);
}
module_init(cdrom_init);
module_exit(cdrom_exit);