Release 4.7 drivers/cdrom/cdrom.c

/* 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 actively
  maintain and improve this driver, I am now carrying on the torch. If
  you have a problem with this driver, please feel free to contact me.

  -- Added (rudimentary) sysctl interface. I realize this is really weak
  right now, and is _very_ badly implemented. It will be improved...

  -- Modified CDROM_DISC_STATUS so that it is now incorporated into
  the Uniform CD-ROM driver via the cdrom_count_tracks function.
  The cdrom_count_tracks function helps resolve some of the false
  assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check
  for the correct media type when mounting or playing audio from a CD.

  -- Remove the calls to verify_area and only use the copy_from_user and
  copy_to_user stuff, since these calls now provide their own memory
  checking with the 2.1.x kernels.

  -- Major update to return codes so that errors from low-level drivers
  are passed on through (thanks to Gerd Knorr for pointing out this
  problem).

  -- Made it so if a function isn't implemented in a low-level driver,
  ENOSYS is now returned instead of EINVAL.

  -- Simplified some complex logic so that the source code is easier to read.

  -- Other stuff I probably forgot to mention (lots of changes).

2.01 to 2.11 Dec 1997-Jan 1998
  -- TO-DO!  Write changelogs for 2.01 to 2.12.

2.12  Jan  24, 1998 -- Erik Andersen <andersee@debian.org>
  -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros.  It turns out that
  copy_*_user does not return EFAULT on error, but instead returns the number 
  of bytes not copied.  I was returning whatever non-zero stuff came back from 
  the copy_*_user functions directly, which would result in strange errors.

2.13  July 17, 1998 -- Erik Andersen <andersee@debian.org>
  -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed
  of the drive.  Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing
  this out and providing a simple fix.
  -- Fixed the procfs-unload-module bug with the fill_inode procfs callback.
  thanks to Andrea Arcangeli
  -- Fixed it so that the /proc entry now also shows up when cdrom is
  compiled into the kernel.  Before it only worked when loaded as a module.

  2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org>
  -- Fixed a bug in cdrom_media_changed and handling of reporting that
  the media had changed for devices that _don't_ implement media_changed.  
  Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug.
  -- Made a few things more pedanticly correct.

2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk>
  -- New maintainers! Erik was too busy to continue the work on the driver,
  so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk>
  will do their best to follow in his footsteps
  
  2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk>
  -- Check if drive is capable of doing what we ask before blindly changing
  cdi->options in various ioctl.
  -- Added version to proc entry.
  
  2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk>
  -- Fixed an error in open_for_data where we would sometimes not return
  the correct error value. Thanks Huba Gaspar <huba@softcell.hu>.
  -- Fixed module usage count - usage was based on /proc/sys/dev
  instead of /proc/sys/dev/cdrom. This could lead to an oops when other
  modules had entries in dev. Feb 02 - real bug was in sysctl.c where
  dev would be removed even though it was used. cdrom.c just illuminated
  that bug.
  
  2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk>
  -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has
  been "rewritten" because capabilities and options aren't in sync. They
  should be...
  -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way.
  -- Added CDROM_RESET ioctl.
  -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly.
  -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs
  from parsing /proc/sys/dev/cdrom/info.
  
  2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk>
  -- Check capability mask from low level driver when counting tracks as
  per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>.
  
  2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk>
  -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of
  CDC_CLOSE_TRAY.
  -- proc info didn't mask against capabilities mask.
  
  3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk>
  -- Unified audio ioctl handling across CD-ROM drivers. A lot of the
  code was duplicated before. Drives that support the generic packet
  interface are now being fed packets from here instead.
  -- First attempt at adding support for MMC2 commands - for DVD and
  CD-R(W) drives. Only the DVD parts are in now - the interface used is
  the same as for the audio ioctls.
  -- ioctl cleanups. if a drive couldn't play audio, it didn't get
  a change to perform device specific ioctls as well.
  -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities.
  -- Put in sysctl files for autoclose, autoeject, check_media, debug,
  and lock.
  -- /proc/sys/dev/cdrom/info has been updated to also contain info about
  CD-Rx and DVD capabilities.
  -- Now default to checking media type.
  -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for
  doing this anyway, with the generic_packet addition.
  
  3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk>
  -- Fix up the sysctl handling so that the option flags get set
  correctly.
  -- Fix up ioctl handling so the device specific ones actually get
  called :).
  
  3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk>
  -- Fixed volume control on SCSI drives (or others with longer audio
  page).
  -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath
  <andrewtv@usa.net> for telling me and for having defined the various
  DVD structures and ioctls in the first place! He designed the original
  DVD patches for ide-cd and while I rearranged and unified them, the
  interface is still the same.
  
  3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk>
  -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only
  CDROMREADTOCENTRY and CDROMREADTOCHDR are left.
  -- Moved the CDROMREADxxx ioctls in here.
  -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls
  and exported functions.
  -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands
  to now read GPCMD_ for the new generic packet interface. All low level
  drivers are updated as well.
  -- Various other cleanups.

  3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk>
  -- Fixed a couple of possible memory leaks (if an operation failed and
  we didn't free the buffer before returning the error).
  -- Integrated Uniform CD Changer handling from Richard Sharman
  <rsharman@pobox.com>.
  -- Defined CD_DVD and CD_CHANGER log levels.
  -- Fixed the CDROMREADxxx ioctls.
  -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few
  drives supported it. We lose the index part, however.
  -- Small modifications to accommodate opens of /dev/hdc1, required
  for ide-cd to handle multisession discs.
  -- Export cdrom_mode_sense and cdrom_mode_select.
  -- init_cdrom_command() for setting up a cgc command.
  
  3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk>
  -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually
  impossible to send the drive data in a sensible way.
  -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and
  dvd_read_manufact.
  -- Added setup of write mode for packet writing.
  -- Fixed CDDA ripping with cdda2wav - accept much larger requests of
  number of frames and split the reads in blocks of 8.

  3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk>
  -- Added support for changing the region of DVD drives.
  -- Added sense data to generic command.

  3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de>
  -- Do same "read header length" trick in cdrom_get_disc_info() as
  we do in cdrom_get_track_info() -- some drive don't obey specs and
  fail if they can't supply the full Mt Fuji size table.
  -- Deleted stuff related to setting up write modes. It has a different
  home now.
  -- Clear header length in mode_select unconditionally.
  -- Removed the register_disk() that was added, not needed here.

  3.08 May 1, 2000 - Jens Axboe <axboe@suse.de>
  -- Fix direction flag in setup_send_key and setup_report_key. This
  gave some SCSI adapters problems.
  -- Always return -EROFS for write opens
  -- Convert to module_init/module_exit style init and remove some
  of the #ifdef MODULE stuff
  -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid,
  DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and
  dvd_do_auth passed uninitialized data to drive because init_cdrom_command
  did not clear a 0 sized buffer.
  
  3.09 May 12, 2000 - Jens Axboe <axboe@suse.de>
  -- Fix Video-CD on SCSI drives that don't support READ_CD command. In
  that case switch block size and issue plain READ_10 again, then switch
  back.

  3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de>
  -- Fix volume control on CD's - old SCSI-II drives now use their own
  code, as doing MODE6 stuff in here is really not my intention.
  -- Use READ_DISC_INFO for more reliable end-of-disc.

  3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de>
  -- Fix bug in getting rpc phase 2 region info.
  -- Reinstate "correct" CDROMPLAYTRKIND

   3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de>
  -- Use quiet bit on packet commands not known to work

   3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de>
  -- Various fixes and lots of cleanups not listed :-)
  -- Locking fixes
  -- Mt Rainier support
  -- DVD-RAM write open fixes

  Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov
  <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units.

  Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW
  2.4.x patch by Andy Polyakov <appro@fy.chalmers.se>

-------------------------------------------------------------------------*/


#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt


#define REVISION "Revision: 3.20"

#define VERSION "Id: cdrom.c 3.20 2003/12/17"

/* I use an error-log mask to give fine grain control over the type of
   messages dumped to the system logs.  The available masks include: */

#define CD_NOTHING      0x0

#define CD_WARNING	0x1

#define CD_REG_UNREG	0x2

#define CD_DO_IOCTL	0x4

#define CD_OPEN		0x8

#define CD_CLOSE	0x10

#define CD_COUNT_TRACKS 0x20

#define CD_CHANGER	0x40

#define CD_DVD		0x80

/* Define this to remove _all_ the debugging messages */
/* #define ERRLOGMASK CD_NOTHING */

#define ERRLOGMASK CD_WARNING
/* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
/* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */

#include <linux/module.h>
#include <linux/fs.h>
#include <linux/major.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/slab.h> 
#include <linux/cdrom.h>
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include <linux/blkpg.h>
#include <linux/init.h>
#include <linux/fcntl.h>
#include <linux/blkdev.h>
#include <linux/times.h>

#include <asm/uaccess.h>

/* used to tell the module to turn on full debugging messages */

static bool debug;
/* default compatibility mode */

static bool autoclose=1;

static bool autoeject;

static bool lockdoor = 1;
/* will we ever get to use this... sigh. */

static bool check_media_type;
/* automatically restart mrw format */

static bool mrw_format_restart = 1;
module_param(debug, bool, 0);
module_param(autoclose, bool, 0);
module_param(autoeject, bool, 0);
module_param(lockdoor, bool, 0);
module_param(check_media_type, bool, 0);
module_param(mrw_format_restart, bool, 0);

static DEFINE_MUTEX(cdrom_mutex);


static const char *mrw_format_status[] = {
	"not mrw",
	"bgformat inactive",
	"bgformat active",
	"mrw complete",
};


static const char *mrw_address_space[] = { "DMA", "GAA" };

#if (ERRLOGMASK != CD_NOTHING)

#define cd_dbg(type, fmt, ...)				\
do {                                                    \
        if ((ERRLOGMASK & type) || debug == 1)          \
                pr_debug(fmt, ##__VA_ARGS__);           \
} while (0)
#else

#define cd_dbg(type, fmt, ...)				\
do {                                                    \
        if (0 && (ERRLOGMASK & type) || debug == 1)     \
                pr_debug(fmt, ##__VA_ARGS__);           \
} while (0)
#endif

/* 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))

/*
 * Another popular OS uses 7 seconds as the hard timeout for default
 * commands, so it is a good choice for us as well.
 */

#define CDROM_DEF_TIMEOUT	(7 * HZ)

/* Not-exported routines. */

static void cdrom_sysctl_register(void);

static LIST_HEAD(cdrom_list);



static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
				      struct packet_command *cgc)
{
	if (cgc->sense) {
		cgc->sense->sense_key = 0x05;
		cgc->sense->asc = 0x20;
		cgc->sense->ascq = 0x00;
	}

	cgc->stat = -EIO;
	return -EIO;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
59
100.00%
1
100.00%
Total
59
100.00%
1
100.00%



static int cdrom_flush_cache(struct cdrom_device_info *cdi)
{
	struct packet_command cgc;

	init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
	cgc.cmd[0] = GPCMD_FLUSH_CACHE;

	cgc.timeout = 5 * 60 * HZ;

	return cdi->ops->generic_packet(cdi, &cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
59
100.00%
1
100.00%
Total
59
100.00%
1
100.00%

/* requires CD R/RW */


static int cdrom_get_disc_info(struct cdrom_device_info *cdi,
			       disc_information *di)
{
	struct cdrom_device_ops *cdo = cdi->ops;
	struct packet_command cgc;
	int ret, buflen;

	/* set up command and get the disc info */
	init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
	cgc.cmd[0] = GPCMD_READ_DISC_INFO;
	cgc.cmd[8] = cgc.buflen = 2;
	cgc.quiet = 1;

	ret = cdo->generic_packet(cdi, &cgc);
	if (ret)
		return ret;

	/* not all drives have the same disc_info length, so requeue
         * packet with the length the drive tells us it can supply
         */
	buflen = be16_to_cpu(di->disc_information_length) +
		sizeof(di->disc_information_length);

	if (buflen > sizeof(disc_information))
		buflen = sizeof(disc_information);

	cgc.cmd[8] = cgc.buflen = buflen;
	ret = cdo->generic_packet(cdi, &cgc);
	if (ret)
		return ret;

	/* return actual fill size */
	return buflen;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
166
100.00%
1
100.00%
Total
166
100.00%
1
100.00%

/* 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)			\
do {                                            \
        if (cdo->call == NULL)                  \
                *change_capability &= ~(bits);  \
} while (0)

/*
 * the first prototypes used 0x2c as the page code for the mrw mode page,
 * subsequently this was changed to 0x03. probe the one used by this drive
 */


static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
{
	struct packet_command cgc;
	char buffer[16];

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);

	cgc.timeout = HZ;
	cgc.quiet = 1;

	if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
		cdi->mrw_mode_page = MRW_MODE_PC;
		return 0;
	} else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
		cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
		return 0;
	}

	return 1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
73
70.19%
1
14.29%
pre-git
pre-git
29
27.88%
5
71.43%
simon arlott
simon arlott
2
1.92%
1
14.29%
Total
104
100.00%
7
100.00%



static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
{
	struct packet_command cgc;
	struct mrw_feature_desc *mfd;
	unsigned char buffer[16];
	int ret;

	*write = 0;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);

	cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
	cgc.cmd[3] = CDF_MRW;
	cgc.cmd[8] = sizeof(buffer);
	cgc.quiet = 1;

	if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
		return ret;

	mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
	if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
		return 1;
	*write = mfd->write;

	if ((ret = cdrom_mrw_probe_pc(cdi))) {
		*write = 0;
		return ret;
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
128
73.99%
1
11.11%
pre-git
pre-git
29
16.76%
5
55.56%
jens axboe
jens axboe
10
5.78%
2
22.22%
andrew morton
andrew morton
6
3.47%
1
11.11%
Total
173
100.00%
9
100.00%



static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
{
	struct packet_command cgc;
	unsigned char buffer[12];
	int ret;

	pr_info("%sstarting format\n", cont ? "Re" : "");

	/*
         * FmtData bit set (bit 4), format type is 1
         */
	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
	cgc.cmd[0] = GPCMD_FORMAT_UNIT;
	cgc.cmd[1] = (1 << 4) | 1;

	cgc.timeout = 5 * 60 * HZ;

	/*
         * 4 byte format list header, 8 byte format list descriptor
         */
	buffer[1] = 1 << 1;
	buffer[3] = 8;

	/*
         * nr_blocks field
         */
	buffer[4] = 0xff;
	buffer[5] = 0xff;
	buffer[6] = 0xff;
	buffer[7] = 0xff;

	buffer[8] = 0x24 << 2;
	buffer[11] = cont;

	ret = cdi->ops->generic_packet(cdi, &cgc);
	if (ret)
		pr_info("bgformat failed\n");

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
92
51.98%
1
25.00%
andrew morton
andrew morton
75
42.37%
1
25.00%
fujita tomonori
fujita tomonori
9
5.08%
1
25.00%
al viro
al viro
1
0.56%
1
25.00%
Total
177
100.00%
4
100.00%



static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
{
	struct packet_command cgc;

	init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
	cgc.cmd[0] = GPCMD_CLOSE_TRACK;

	/*
         * Session = 1, Track = 0
         */
	cgc.cmd[1] = !!immed;
	cgc.cmd[2] = 1 << 1;

	cgc.timeout = 5 * 60 * HZ;

	return cdi->ops->generic_packet(cdi, &cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
48
56.47%
1
25.00%
andrew morton
andrew morton
35
41.18%
1
25.00%
al viro
al viro
1
1.18%
1
25.00%
adrian bunk
adrian bunk
1
1.18%
1
25.00%
Total
85
100.00%
4
100.00%



static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
{
	disc_information di;
	int ret;

	ret = cdrom_get_disc_info(cdi, &di);
	if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
		return 1;

	ret = 0;
	if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
		pr_info("issuing MRW background format suspend\n");
		ret = cdrom_mrw_bgformat_susp(cdi, 0);
	}

	if (!ret && cdi->media_written)
		ret = cdrom_flush_cache(cdi);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
79
80.61%
1
33.33%
andrew morton
andrew morton
17
17.35%
1
33.33%
fujita tomonori
fujita tomonori
2
2.04%
1
33.33%
Total
98
100.00%
3
100.00%



static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
{
	struct packet_command cgc;
	struct mode_page_header *mph;
	char buffer[16];
	int ret, offset, size;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);

	cgc.buffer = buffer;
	cgc.buflen = sizeof(buffer);

	ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0);
	if (ret)
		return ret;

	mph = (struct mode_page_header *)buffer;
	offset = be16_to_cpu(mph->desc_length);
	size = be16_to_cpu(mph->mode_data_length) + 2;

	buffer[offset + 3] = space;
	cgc.buflen = size;

	ret = cdrom_mode_select(cdi, &cgc);
	if (ret)
		return ret;

	pr_info("%s: mrw address space %s selected\n",
		cdi->name, mrw_address_space[space]);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
73
43.71%
1
12.50%
andrew morton
andrew morton
68
40.72%
1
12.50%
fujita tomonori
fujita tomonori
18
10.78%
1
12.50%
peter osterlund
peter osterlund
4
2.40%
1
12.50%
thomas bogendoerfer
thomas bogendoerfer
1
0.60%
1
12.50%
al viro
al viro
1
0.60%
1
12.50%
jens axboe
jens axboe
1
0.60%
1
12.50%
adrian bunk
adrian bunk
1
0.60%
1
12.50%
Total
167
100.00%
8
100.00%



int register_cdrom(struct cdrom_device_info *cdi)
{
	static char banner_printed;
	struct cdrom_device_ops *cdo = cdi->ops;
	int *change_capability = (int *)&cdo->capability; /* hack */

	cd_dbg(CD_OPEN, "entering register_cdrom\n");

	if (cdo->open == NULL || cdo->release == NULL)
		return -EINVAL;
	if (!banner_printed) {
		pr_info("Uniform CD-ROM driver " REVISION "\n");
		banner_printed = 1;
		cdrom_sysctl_register();
	}

	ENSURE(drive_status, CDC_DRIVE_STATUS);
	if (cdo->check_events == NULL && cdo->media_changed == NULL)
		*change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC);
	ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
	ENSURE(lock_door, CDC_LOCK);
	ENSURE(select_speed, CDC_SELECT_SPEED);
	ENSURE(get_last_session, CDC_MULTI_SESSION);
	ENSURE(get_mcn, CDC_MCN);
	ENSURE(reset, CDC_RESET);
	ENSURE(generic_packet, CDC_GENERIC_PACKET);
	cdi->mc_flags = 0;
	cdo->n_minors = 0;
	cdi->options = CDO_USE_FFLAGS;

	if (autoclose == 1 && CDROM_CAN(CDC_CLOSE_TRAY))
		cdi->options |= (int) CDO_AUTO_CLOSE;
	if (autoeject == 1 && CDROM_CAN(CDC_OPEN_TRAY))
		cdi->options |= (int) CDO_AUTO_EJECT;
	if (lockdoor == 1)
		cdi->options |= (int) CDO_LOCK;
	if (check_media_type == 1)
		cdi->options |= (int) CDO_CHECK_TYPE;

	if (CDROM_CAN(CDC_MRW_W))
		cdi->exit = cdrom_mrw_exit;

	if (cdi->disk)
		cdi->cdda_method = CDDA_BPC_FULL;
	else
		cdi->cdda_method = CDDA_OLD;

	if (!cdo->generic_packet)
		cdo->generic_packet = cdrom_dummy_generic_packet;

	cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
	mutex_lock(&cdrom_mutex);
	list_add(&cdi->list, &cdrom_list);
	mutex_unlock(&cdrom_mutex);
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
258
77.01%
1
20.00%
andrew morton
andrew morton
72
21.49%
1
20.00%
andy polyakov
andy polyakov
2
0.60%
1
20.00%
samuel thibault
samuel thibault
2
0.60%
1
20.00%
fujita tomonori
fujita tomonori
1
0.30%
1
20.00%
Total
335
100.00%
5
100.00%


#undef ENSURE



void unregister_cdrom(struct cdrom_device_info *cdi)
{
	cd_dbg(CD_OPEN, "entering unregister_cdrom\n");

	mutex_lock(&cdrom_mutex);
	list_del(&cdi->list);
	mutex_unlock(&cdrom_mutex);

	if (cdi->exit)
		cdi->exit(cdi);

	cdi->ops->n_minors--;
	cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
50
73.53%
1
33.33%
andrew morton
andrew morton
16
23.53%
1
33.33%
jens axboe
jens axboe
2
2.94%
1
33.33%
Total
68
100.00%
3
100.00%



int cdrom_get_media_event(struct cdrom_device_info *cdi,
			  struct media_event_desc *med)
{
	struct packet_command cgc;
	unsigned char buffer[8];
	struct event_header *eh = (struct event_header *)buffer;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
	cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
	cgc.cmd[1] = 1;		/* IMMED */
	cgc.cmd[4] = 1 << 4;	/* media event */
	cgc.cmd[8] = sizeof(buffer);
	cgc.quiet = 1;

	if (cdi->ops->generic_packet(cdi, &cgc))
		return 1;

	if (be16_to_cpu(eh->data_len) < sizeof(*med))
		return 1;

	if (eh->nea || eh->notification_class != 0x4)
		return 1;

	memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
98
55.68%
1
20.00%
andrew morton
andrew morton
53
30.11%
1
20.00%
fujita tomonori
fujita tomonori
23
13.07%
1
20.00%
thomas bogendoerfer
thomas bogendoerfer
1
0.57%
1
20.00%
al viro
al viro
1
0.57%
1
20.00%
Total
176
100.00%
5
100.00%



static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
			      struct rwrt_feature_desc *rfd)
{
	struct packet_command cgc;
	char buffer[24];
	int ret;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);

	cgc.cmd[0] = GPCMD_GET_CONFIGURATION;	/* often 0x46 */
	cgc.cmd[3] = CDF_RWRT;			/* often 0x0020 */
	cgc.cmd[8] = sizeof(buffer);		/* often 0x18 */
	cgc.quiet = 1;

	if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
		return ret;

	memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
104
81.25%
1
20.00%
fujita tomonori
fujita tomonori
21
16.41%
1
20.00%
adrian bunk
adrian bunk
1
0.78%
1
20.00%
al viro
al viro
1
0.78%
1
20.00%
thomas bogendoerfer
thomas bogendoerfer
1
0.78%
1
20.00%
Total
128
100.00%
5
100.00%



static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
{
	struct packet_command cgc;
	char buffer[16];
	__be16 *feature_code;
	int ret;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);

	cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
	cgc.cmd[3] = CDF_HWDM;
	cgc.cmd[8] = sizeof(buffer);
	cgc.quiet = 1;

	if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
		return ret;

	feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
	if (be16_to_cpu(*feature_code) == CDF_HWDM)
		return 0;

	return 1;
}


Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
109
82.58%
1
16.67%
fujita tomonori
fujita tomonori
17
12.88%
1
16.67%
andrew morton
andrew morton
2
1.52%
1
16.67%
alexey dobriyan
alexey dobriyan
2
1.52%
1
16.67%
al viro
al viro
1
0.76%
1
16.67%
adrian bunk
adrian bunk
1
0.76%
1
16.67%
Total
132
100.00%
6
100.00%



static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
{
	struct rwrt_feature_desc rfd;
	int ret;

	*write = 0;

	if ((ret = cdrom_get_random_writable(cdi, &rfd)))
		return ret;

	if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
		*write = 1;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
62
98.41%
1
50.00%
adrian bunk
adrian bunk
1
1.59%
1
50.00%
Total
63
100.00%
2
100.00%



static int cdrom_media_erasable(struct cdrom_device_info *cdi)
{
	disc_information di;
	int ret;

	ret = cdrom_get_disc_info(cdi, &di);
	if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
		return -1;

	return di.erasable;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
andrew morton
andrew morton
31
57.41%
2
50.00%
andy polyakov
andy polyakov
13
24.07%
1
25.00%
samuel thibault
samuel thibault
10
18.52%
1
25.00%
Total
54
100.00%
4
100.00%

/*
 * FIXME: check RO bit
 */


static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
{
	int ret = cdrom_media_erasable(cdi);

	/*
         * allow writable open if media info read worked and media is
         * erasable, _or_ if it fails since not all drives support it
         */
	if (!ret)
		return 1;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
andrew morton
andrew morton
31
100.00%
2
100.00%
Total
31
100.00%
2
100.00%



static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
{
	disc_information di;
	int ret;

	/*
         * always reset to DMA lba space on open
         */
	if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
		pr_err("failed setting lba address space\n");
		return 1;
	}

	ret = cdrom_get_disc_info(cdi, &di);
	if (ret < 0 || ret < offsetof(typeof(di),disc_type))
		return 1;

	if (!di.erasable)
		return 1;

	/*
         * mrw_status
         * 0    -       not MRW formatted
         * 1    -       MRW bgformat started, but not running or complete
         * 2    -       MRW bgformat in progress
         * 3    -       MRW formatting complete
         */
	ret = 0;
	pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]);
	if (!di.mrw_status)
		ret = 1;
	else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
			mrw_format_restart)
		ret = cdrom_mrw_bgformat(cdi, 1);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
andrew morton
andrew morton
105
81.40%
1
25.00%
samuel thibault
samuel thibault
10
7.75%
1
25.00%
andy polyakov
andy polyakov
10
7.75%
1
25.00%
joe perches
joe perches
4
3.10%
1
25.00%
Total
129
100.00%
4
100.00%



static int mo_open_write(struct cdrom_device_info *cdi)
{
	struct packet_command cgc;
	char buffer[255];
	int ret;

	init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
	cgc.quiet = 1;

	/*
         * obtain write protect information as per
         * drivers/scsi/sd.c:sd_read_write_protect_flag
         */

	ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
	if (ret)
		ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
	if (ret) {
		cgc.buflen = 255;
		ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
	}

	/* drive gave us no info, let the user go ahead */
	if (ret)
		return 0;

	return buffer[3] & 0x80;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
andrew morton
andrew morton
110
93.22%
1
33.33%
fujita tomonori
fujita tomonori
7
5.93%
1
33.33%
al viro
al viro
1
0.85%
1
33.33%
Total
118
100.00%
3
100.00%



static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
{
	struct rwrt_feature_desc rfd;
	int ret;

	if ((ret = cdrom_has_defect_mgt(cdi)))
		return ret;

	if ((ret = cdrom_get_random_writable(cdi, &rfd)))
		return ret;
	else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
		ret = !rfd.curr;

	cd_dbg(CD_OPEN, "can open for random write\n");
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
77
98.72%
1
50.00%
joe perches
joe perches
1
1.28%
1
50.00%
Total
78
100.00%
2
100.00%



static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
{
	struct packet_command cgc;
	char buffer[32];
	int ret, mmc3_profile;

	init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);

	cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
	cgc.cmd[1] = 0;
	cgc.cmd[2] = cgc.cmd[3] = 0;		/* Starting Feature Number */
	cgc.cmd[8] = sizeof(buffer);		/* Allocation Length */
	cgc.quiet = 1;

	if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
		mmc3_profile = 0xffff;
	else
		mmc3_profile = (buffer[6] << 8) | buffer[7];

	cdi->mmc3_profile = mmc3_profile;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
peter osterlund
peter osterlund
129
92.14%
1
50.00%
fujita tomonori
fujita tomonori
11
7.86%
1
50.00%
Total
140
100.00%
2
100.00%



static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
{
	switch (cdi->mmc3_profile) {
	case 0x12:	/* DVD-RAM      */
	case 0x1A:	/* DVD+RW       */
	case 0x43:	/* BD-RE        */
		return 0;
	default:
		return 1;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
peter osterlund
peter osterlund
34
89.47%
1
50.00%
georgios toptsidis
georgios toptsidis
4
10.53%
1
50.00%
Total
38
100.00%
2
100.00%

/*
 * returns 0 for ok to open write, non-0 to disallow
 */


static int cdrom_open_write(struct cdrom_device_info *cdi)
{
	int mrw, mrw_write, ram_write;
	int ret = 1;

	mrw = 0;
	if (!cdrom_is_mrw(cdi, &mrw_write))
		mrw = 1;

	if (CDROM_CAN(CDC_MO_DRIVE))
		ram_write = 1;
	else
		(void) cdrom_is_random_writable(cdi, &ram_write);
	
	if (mrw)
		cdi->mask &= ~CDC_MRW;
	else
		cdi->mask |= CDC_MRW;

	if (mrw_write)
		cdi->mask &= ~CDC_MRW_W;
	else
		cdi->mask |= CDC_MRW_W;

	if (ram_write)
		cdi->mask &= ~CDC_RAM;
	else
		cdi->mask |= CDC_RAM;

	if (CDROM_CAN(CDC_MRW_W))
		ret = cdrom_mrw_open_write(cdi);
	else if (CDROM_CAN(CDC_DVD_RAM))
		ret = cdrom_dvdram_open_write(cdi);
 	else if (CDROM_CAN(CDC_RAM) &&
 		 !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
 		ret = cdrom_ram_open_write(cdi);
	else if (CDROM_CAN(CDC_MO_DRIVE))
		ret = mo_open_write(cdi);
	else if (!cdrom_is_dvd_rw(cdi))
		ret = 0;

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
120
57.14%
2
20.00%
andrew morton
andrew morton
51
24.29%
3
30.00%
stefan meyknecht
stefan meyknecht
14
6.67%
1
10.00%
peter osterlund
peter osterlund
13
6.19%
1
10.00%
pre-git
pre-git
12
5.71%
3
30.00%
Total
210
100.00%
10
100.00%



static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
{
	struct packet_command cgc;

	if (cdi->mmc3_profile != 0x1a) {
		cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
		return;
	}

	if (!cdi->media_written) {
		cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
		return;
	}

	pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name);

	init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
	cgc.cmd[0] = GPCMD_FLUSH_CACHE;
	cgc.timeout = 30*HZ;
	cdi->ops->generic_packet(cdi, &cgc);

	init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
	cgc.cmd[0] = GPCMD_CLOSE_TRACK;
	cgc.timeout = 3000*HZ;
	cgc.quiet = 1;
	cdi->ops->generic_packet(cdi, &cgc);

	init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
	cgc.cmd[0] = GPCMD_CLOSE_TRACK;
	cgc.cmd[2] = 2;	 /* Close session */
	cgc.quiet = 1;
	cgc.timeout = 3000*HZ;
	cdi->ops->generic_packet(cdi, &cgc);

	cdi->media_written = 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
peter osterlund
peter osterlund
214
98.17%
1
33.33%
joe perches
joe perches
4
1.83%
2
66.67%
Total
218
100.00%
3
100.00%



static int cdrom_close_write(struct cdrom_device_info *cdi)
{
#if 0
	return cdrom_flush_cache(cdi);
#else
	return 0;
#endif
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
andrew morton
andrew morton
19
86.36%
1
50.00%
pre-git
pre-git
3
13.64%
1
50.00%
Total
22
100.00%
2
100.00%

/* badly broken, I know. Is due for a fixup anytime. */


static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks)
{
	struct cdrom_tochdr header;
	struct cdrom_tocentry entry;
	int ret, i;
	tracks->data = 0;
	tracks->audio = 0;
	tracks->cdi = 0;
	tracks->xa = 0;
	tracks->error = 0;
	cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
	/* Grab the TOC header so we can see how many tracks there are */
	ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
	if (ret) {
		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++;
		}
		cd_dbg(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
		       i, entry.cdte_format, entry.cdte_ctrl);
	}
	cd_dbg(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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
194
74.33%
2
28.57%
pre-git
pre-git
67
25.67%
5
71.43%
Total
261
100.00%
7
100.00%


static

int open_for_data(struct cdrom_device_info *cdi)
{
	int ret;
	struct cdrom_device_ops *cdo = cdi->ops;
	tracktype tracks;
	cd_dbg(CD_OPEN, "entering open_for_data\n");
	/* Check if the driver can report drive status.  If it can, we
           can do clever things.  If it can't, well, we at least tried! */
	if (cdo->drive_status != NULL) {
		ret = cdo->drive_status(cdi, CDSL_CURRENT);
		cd_dbg(CD_OPEN, "drive_status=%d\n", ret);
		if (ret == CDS_TRAY_OPEN) {
			cd_dbg(CD_OPEN, "the tray is open...\n");
			/* can/may i close it? */
			if (CDROM_CAN(CDC_CLOSE_TRAY) &&
			    cdi->options & CDO_AUTO_CLOSE) {
				cd_dbg(CD_OPEN, "trying to close the tray\n");
				ret=cdo->tray_move(cdi,0);
				if (ret) {
					cd_dbg(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 {
				cd_dbg(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)) {
				cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
				cd_dbg(CD_OPEN, "tray might not contain a medium\n");
				ret=-ENOMEDIUM;
				goto clean_up_and_return;
			}
			cd_dbg(CD_OPEN, "the tray is now closed\n");
		}
		/* the door should be closed now, check for the disc */
		ret = cdo->drive_status(cdi, CDSL_CURRENT);
		if (ret!=CDS_DISC_OK) {
			ret = -ENOMEDIUM;
			goto clean_up_and_return;
		}
	}
	cdrom_count_tracks(cdi, &tracks);
	if (tracks.error == CDS_NO_DISC) {
		cd_dbg(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! */
		    cd_dbg(CD_OPEN, "bummer. wrong media type.\n");
		    cd_dbg(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
			   (unsigned int)task_pid_nr(current));
		    ret=-EMEDIUMTYPE;
		    goto clean_up_and_return;
		}
		else {
		    cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n");
		}
	}

	cd_dbg(CD_OPEN, "all seems well, opening the devicen");

	/* all seems well, we can open the device */
	ret = cdo->open(cdi, 0); /* open for data */
	cd_dbg(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) {
		cd_dbg(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);
			cd_dbg(CD_OPEN, "door locked\n");
	}
	cd_dbg(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:
	cd_dbg(CD_OPEN, "open failed\n");
	if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
			cdo->lock_door(cdi, 0);
			cd_dbg(CD_OPEN, "door unlocked\n");
	}
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
296
63.38%
2
12.50%
pre-git
pre-git
160
34.26%
10
62.50%
stas sergeev
stas sergeev
7
1.50%
1
6.25%
andrew morton
andrew morton
2
0.43%
1
6.25%
pavel emelianov
pavel emelianov
1
0.21%
1
6.25%
jens axboe
jens axboe
1
0.21%
1
6.25%
Total
467
100.00%
16
100.00%

/* We use the open-option O_NONBLOCK to indicate that the
 * purpose of opening is only for subsequent ioctl() calls; no device
 * integrity checks are performed.
 *
 * We hope that all cd-player programs will adopt this convention. It
 * is in their own interest: device control becomes a lot easier
 * this way.
 */


int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev,
	       fmode_t mode)
{
	int ret;

	cd_dbg(CD_OPEN, "entering cdrom_open\n");

	/* open is event synchronization point, check events first */
	check_disk_change(bdev);

	/* if this was a O_NONBLOCK open and we should honor the flags,
         * do a quick open without drive/disc integrity checks. */
	cdi->use_count++;
	if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) {
		ret = cdi->ops->open(cdi, 1);
	} else {
		ret = open_for_data(cdi);
		if (ret)
			goto err;
		cdrom_mmc3_profile(cdi);
		if (mode & FMODE_WRITE) {
			ret = -EROFS;
			if (cdrom_open_write(cdi))
				goto err_release;
			if (!CDROM_CAN(CDC_RAM))
				goto err_release;
			ret = 0;
			cdi->media_written = 0;
		}
	}

	if (ret)
		goto err;

	cd_dbg(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
	       cdi->name, cdi->use_count);
	return 0;
err_release:
	if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
		cdi->ops->lock_door(cdi, 0);
		cd_dbg(CD_OPEN, "door unlocked\n");
	}
	cdi->ops->release(cdi);
err:
	cdi->use_count--;
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
216
100.00%
1
100.00%
Total
216
100.00%
1
100.00%

/* This code is similar to that in open_for_data. The routine is called
   whenever an audio play operation is requested.
*/


static int check_for_audio_disc(struct cdrom_device_info * cdi,
				struct cdrom_device_ops * cdo)
{
        int ret;
	tracktype tracks;
	cd_dbg(CD_OPEN, "entering check_for_audio_disc\n");
	if (!(cdi->options & CDO_CHECK_TYPE))
		return 0;
	if (cdo->drive_status != NULL) {
		ret = cdo->drive_status(cdi, CDSL_CURRENT);
		cd_dbg(CD_OPEN, "drive_status=%d\n", ret);
		if (ret == CDS_TRAY_OPEN) {
			cd_dbg(CD_OPEN, "the tray is open...\n");
			/* can/may i close it? */
			if (CDROM_CAN(CDC_CLOSE_TRAY) &&
			    cdi->options & CDO_AUTO_CLOSE) {
				cd_dbg(CD_OPEN, "trying to close the tray\n");
				ret=cdo->tray_move(cdi,0);
				if (ret) {
					cd_dbg(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 {
				cd_dbg(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)) {
				cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
				return -ENOMEDIUM;
			}	
			if (ret!=CDS_DISC_OK) {
				cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n");
				return -EIO;
			}	
			cd_dbg(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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
243
95.29%
7
77.78%
joe perches
joe perches
11
4.31%
1
11.11%
adrian bunk
adrian bunk
1
0.39%
1
11.11%
Total
255
100.00%
9
100.00%



void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
{
	struct cdrom_device_ops *cdo = cdi->ops;
	int opened_for_data;

	cd_dbg(CD_CLOSE, "entering cdrom_release\n");

	if (cdi->use_count > 0)
		cdi->use_count--;

	if (cdi->use_count == 0) {
		cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n",
		       cdi->name);
		cdrom_dvd_rw_close_write(cdi);

		if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) {
			cd_dbg(CD_CLOSE, "Unlocking door!\n");
			cdo->lock_door(cdi, 0);
		}
	}

	opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
		!(mode & FMODE_NDELAY);

	/*
         * flush cache on last write release
         */
	if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
		cdrom_close_write(cdi);

	cdo->release(cdi);
	if (cdi->use_count == 0) {      /* last process that closes dev*/
		if (opened_for_data &&
		    cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
			cdo->tray_move(cdi, 1);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
141
75.81%
5
38.46%
andrew morton
andrew morton
24
12.90%
1
7.69%
al viro
al viro
7
3.76%
3
23.08%
peter osterlund
peter osterlund
7
3.76%
1
7.69%
joe perches
joe perches
3
1.61%
1
7.69%
paolo bonzini
paolo bonzini
2
1.08%
1
7.69%
borislav petkov
borislav petkov
2
1.08%
1
7.69%
Total
186
100.00%
13
100.00%



static int cdrom_read_mech_status(struct cdrom_device_info *cdi, 
				  struct cdrom_changer_info *buf)
{
	struct packet_command cgc;
	struct cdrom_device_ops *cdo = cdi->ops;
	int length;

	/*
         * Sanyo changer isn't spec compliant (doesn't use regular change
         * LOAD_UNLOAD command, and it doesn't implement the mech status
         * command below
         */
	if (cdi->sanyo_slot) {
		buf->hdr.nslots = 3;
		buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
		for (length = 0; length < 3; length++) {
			buf->slots[length].disc_present = 1;
			buf->slots[length].change = 0;
		}
		return 0;
	}

	length = sizeof(struct cdrom_mechstat_header) +
		 cdi->capacity * sizeof(struct cdrom_slot);

	init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
	cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
	cgc.cmd[8] = (length >> 8) & 0xff;
	cgc.cmd[9] = length & 0xff;
	return cdo->generic_packet(cdi, &cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
182
99.45%
8
88.89%
al viro
al viro
1
0.55%
1
11.11%
Total
183
100.00%
9
100.00%



static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
{
	struct cdrom_changer_info *info;
	int ret;

	cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n");
	if (cdi->sanyo_slot)
		return CDS_NO_INFO;
	
	info = kmalloc(sizeof(*info), GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	if ((ret = cdrom_read_mech_status(cdi, info)))
		goto out_free;

	if (info->slots[slot].disc_present)
		ret = CDS_DISC_OK;
	else
		ret = CDS_NO_DISC;

out_free:
	kfree(info);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
63
59.43%
4
66.67%
jens axboe
jens axboe
42
39.62%
1
16.67%
joe perches
joe perches
1
0.94%
1
16.67%
Total
106
100.00%
6
100.00%

/* 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;

	cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n");
	/* cdrom_read_mech_status requires a valid value for capacity: */
	cdi->capacity = 0; 

	info = kmalloc(sizeof(*info), GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	if ((status = cdrom_read_mech_status(cdi, info)) == 0)
		nslots = info->hdr.nslots;

	kfree(info);
	return nslots;
}


Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
60
66.67%
1
33.33%
jens axboe
jens axboe
29
32.22%
1
33.33%
joe perches
joe perches
1
1.11%
1
33.33%
Total
90
100.00%
3
100.00%

/* If SLOT < 0, unload the current slot.  Otherwise, try to load SLOT. */


static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) 
{
	struct packet_command cgc;

	cd_dbg(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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
152
93.83%
3
50.00%
dave jones
dave jones
8
4.94%
1
16.67%
al viro
al viro
1
0.62%
1
16.67%
joe perches
joe perches
1
0.62%
1
16.67%
Total
162
100.00%
6
100.00%



static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
{
	struct cdrom_changer_info *info;
	int curslot;
	int ret;

	cd_dbg(CD_CHANGER, "entering cdrom_select_disc()\n");
	if (!CDROM_CAN(CDC_SELECT_DISC))
		return -EDRIVE_CANT_DO_THIS;

	if (cdi->ops->check_events)
		cdi->ops->check_events(cdi, 0, slot);
	else
		cdi->ops->media_changed(cdi, slot);

	if (slot == CDSL_NONE) {
		/* set media changed bits, on both queues */
		cdi->mc_flags = 0x3;
		return cdrom_load_unload(cdi, -1);
	}

	info = kmalloc(sizeof(*info), GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	if ((ret = cdrom_read_mech_status(cdi, info))) {
		kfree(info);
		return ret;
	}

	curslot = info->hdr.curslot;
	kfree(info);

	if (cdi->use_count > 1 || cdi->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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
166
72.81%
2
28.57%
jens axboe
jens axboe
36
15.79%
1
14.29%
tejun heo
tejun heo
22
9.65%
1
14.29%
paolo bonzini
paolo bonzini
2
0.88%
1
14.29%
joe perches
joe perches
1
0.44%
1
14.29%
al viro
al viro
1
0.44%
1
14.29%
Total
228
100.00%
7
100.00%

/*
 * As cdrom implements an extra ioctl consumer for media changed
 * event, it needs to buffer ->check_events() output, such that event
 * is not lost for both the usual VFS and ioctl paths.
 * cdi->{vfs|ioctl}_events are used to buffer pending events for each
 * path.
 *
 * XXX: Locking is non-existent.  cdi->ops->check_events() can be
 * called in parallel and buffering fields are accessed without any
 * exclusion.  The original media_changed code had the same problem.
 * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl
 * and remove this cruft altogether.  It doesn't have much usefulness
 * at this point.
 */


static void cdrom_update_events(struct cdrom_device_info *cdi,
				unsigned int clearing)
{
	unsigned int events;

	events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT);
	cdi->vfs_events |= events;
	cdi->ioctl_events |= events;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
tejun heo
tejun heo
46
100.00%
1
100.00%
Total
46
100.00%
1
100.00%



unsigned int cdrom_check_events(struct cdrom_device_info *cdi,
				unsigned int clearing)
{
	unsigned int events;

	cdrom_update_events(cdi, clearing);
	events = cdi->vfs_events;
	cdi->vfs_events = 0;
	return events;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
tejun heo
tejun heo
41
100.00%
1
100.00%
Total
41
100.00%
1
100.00%


EXPORT_SYMBOL(cdrom_check_events);

/* 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);
	bool changed;

	if (!CDROM_CAN(CDC_MEDIA_CHANGED))
		return ret;

	/* changed since last call? */
	if (cdi->ops->check_events) {
		BUG_ON(!queue);	/* shouldn't be called from VFS path */
		cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE);
		changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE;
		cdi->ioctl_events = 0;
	} else
		changed = cdi->ops->media_changed(cdi, CDSL_CURRENT);

	if (changed) {
		cdi->mc_flags = 0x3;    /* set bit on both queues */
		ret |= 1;
		cdi->media_written = 0;
	}

	cdi->mc_flags &= ~mask;         /* clear bit */
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
90
63.38%
1
33.33%
tejun heo
tejun heo
46
32.39%
1
33.33%
peter osterlund
peter osterlund
6
4.23%
1
33.33%
Total
142
100.00%
3
100.00%



int cdrom_media_changed(struct cdrom_device_info *cdi)
{
	/* This talks to the VFS, which doesn't like errors - just 1 or 0.  
         * Returning "0" is always safe (media hasn't been changed). Do that 
         * if the low-level cdrom driver dosn't support media changed. */ 
	if (cdi == NULL || cdi->ops->media_changed == NULL)
		return 0;
	if (!CDROM_CAN(CDC_MEDIA_CHANGED))
		return 0;
	return media_changed(cdi, 0);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
45
95.74%
3
75.00%
al viro
al viro
2
4.26%
1
25.00%
Total
47
100.00%
4
100.00%

/* 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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
122
100.00%
3
100.00%
Total
122
100.00%
3
100.00%



void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
			int type)
{
	memset(cgc, 0, sizeof(struct packet_command));
	if (buf)
		memset(buf, 0, len);
	cgc->buffer = (char *) buf;
	cgc->buflen = len;
	cgc->data_direction = type;
	cgc->timeout = CDROM_DEF_TIMEOUT;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
71
95.95%
5
71.43%
al viro
al viro
2
2.70%
1
14.29%
jens axboe
jens axboe
1
1.35%
1
14.29%
Total
74
100.00%
7
100.00%

/* DVD handling */


#define copy_key(dest,src)	memcpy((dest), (src), sizeof(dvd_key))

#define copy_chal(dest,src)	memcpy((dest), (src), sizeof(dvd_challenge))



static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
{
	cgc->cmd[0] = GPCMD_REPORT_KEY;
	cgc->cmd[10] = type | (agid << 6);
	switch (type) {
		case 0: case 8: case 5: {
			cgc->buflen = 8;
			break;
		}
		case 1: {
			cgc->buflen = 16;
			break;
		}
		case 2: case 4: {
			cgc->buflen = 12;
			break;
		}
	}
	cgc->cmd[9] = cgc->buflen;
	cgc->data_direction = CGC_DATA_READ;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
108
99.08%
6
85.71%
al viro
al viro
1
0.92%
1
14.29%
Total
109
100.00%
7
100.00%



static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
{
	cgc->cmd[0] = GPCMD_SEND_KEY;
	cgc->cmd[10] = type | (agid << 6);
	switch (type) {
		case 1: {
			cgc->buflen = 16;
			break;
		}
		case 3: {
			cgc->buflen = 12;
			break;
		}
		case 6: {
			cgc->buflen = 8;
			break;
		}
	}
	cgc->cmd[9] = cgc->buflen;
	cgc->data_direction = CGC_DATA_WRITE;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
99
99.00%
6
85.71%
al viro
al viro
1
1.00%
1
14.29%
Total
100
100.00%
7
100.00%



static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
{
	int ret;
	u_char buf[20];
	struct packet_command cgc;
	struct cdrom_device_ops *cdo = cdi->ops;
	rpc_state_t rpc_state;

	memset(buf, 0, sizeof(buf));
	init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);

	switch (ai->type) {
	/* LU data send */
	case DVD_LU_SEND_AGID:
		cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n");
		cgc.quiet = 1;
		setup_report_key(&cgc, ai->lsa.agid, 0);

		if ((ret = cdo->generic_packet(cdi, &cgc)))
			return ret;

		ai->lsa.agid = buf[7] >> 6;
		/* Returning data, let host change state */
		break;

	case DVD_LU_SEND_KEY1:
		cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
		setup_report_key(&cgc, ai->lsk.agid, 2);

		if ((ret = cdo->generic_packet(cdi, &cgc)))
			return ret;

		copy_key(ai->lsk.key, &buf[4]);
		/* Returning data, let host change state */
		break;

	case DVD_LU_SEND_CHALLENGE:
		cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
		setup_report_key(&cgc, ai->lsc.agid, 1);

		if ((ret = cdo->generic_packet(cdi, &cgc)))
			return ret;

		copy_chal(ai->lsc.chal, &buf[4]);
		/* Returning data, let host change state */
		break;

	/* Post-auth key */
	case DVD_LU_SEND_TITLE_KEY:
		cd_dbg(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
		cgc.quiet = 1;
		setup_report_key(&cgc, ai->lstk.agid, 4);
		cgc.cmd[5] = ai->lstk.lba;
		cgc.cmd[4] = ai->lstk.lba >> 8;
		cgc.cmd[3] = ai->lstk.lba >> 16;
		cgc.cmd[2] = ai->lstk.lba >> 24;

		if ((ret = cdo->generic_packet(cdi, &cgc)))
			return ret;

		ai->lstk.cpm = (buf[4] >> 7) & 1;
		ai->lstk.cp_sec = (buf[4] >> 6) & 1;
		ai->lstk.cgms = (buf[4] >> 4) & 3;
		copy_key(ai->lstk.title_key, &buf[5]);
		/* Returning data, let host change state */
		break;

	case DVD_LU_SEND_ASF:
		cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n");
		setup_report_key(&cgc, ai->lsasf.agid, 5);
		
		if ((ret = cdo->generic_packet(cdi, &cgc)))
			return ret;

		ai->lsasf.asf = buf[7] & 1;
		break;

	/* LU data receive (LU changes state) */
	case DVD_HOST_SEND_CHALLENGE:
		cd_dbg(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
		setup_send_key(&cgc, ai->hsc.agid, 1);
		buf[1] = 0xe;
		copy_chal(&buf[4], ai->hsc.chal);

		if ((ret = cdo->generic_packet(cdi, &cgc)))
			return ret;

		ai->type = DVD_LU_SEND_KEY1;
		break;

	case DVD_HOST_SEND_KEY2:
		cd_dbg(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
		setup_send_key(&cgc, ai->hsk.agid, 3);
		buf[1] = 0xa;
		copy_key(&buf[4], ai->hsk.key);

		if ((ret = cdo->generic_packet(cdi, &cgc))) {
			ai->type = DVD_AUTH_FAILURE;
			return ret;
		}
		ai->type = DVD_AUTH_ESTABLISHED;
		break;

	/* Misc */
	case DVD_INVALIDATE_AGID:
		cgc.quiet = 1;
		cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
		setup_report_key(&cgc, ai->lsa.agid, 0x3f);
		if ((ret = cdo->generic_packet(cdi, &cgc)))
			return ret;
		break;

	/* Get region settings */
	case DVD_LU_SEND_RPC_STATE:
		cd_dbg(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
		setup_report_key(&cgc, 0, 8);
		memset(&rpc_state, 0, sizeof(rpc_state_t));
		cgc.buffer = (char *) &rpc_state;

		if ((ret = cdo->generic_packet(cdi, &cgc)))
			return ret;

		ai->lrpcs.type = rpc_state.type_code;
		ai->lrpcs.vra = rpc_state.vra;
		ai->lrpcs.ucca = rpc_state.ucca;
		ai->lrpcs.region_mask = rpc_state.region_mask;
		ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
		break;

	/* Set region settings */
	case DVD_HOST_SEND_RPC_STATE:
		cd_dbg(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
		setup_send_key(&cgc, 0, 6);
		buf[1] = 6;
		buf[4] = ai->hrpcs.pdrc;

		if ((ret = cdo->generic_packet(cdi, &cgc)))
			return ret;
		break;

	default:
		cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
		return -ENOTTY;
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
771
86.92%
13
68.42%
fujita tomonori
fujita tomonori
73
8.23%
1
5.26%
al viro
al viro
13
1.47%
2
10.53%
thomas bogendoerfer
thomas bogendoerfer
13
1.47%
1
5.26%
joe perches
joe perches
11
1.24%
1
5.26%
dave jones
dave jones
6
0.68%
1
5.26%
Total
887
100.00%
19
100.00%



static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s,
				struct packet_command *cgc)
{
	unsigned char buf[21], *base;
	struct dvd_layer *layer;
	struct cdrom_device_ops *cdo = cdi->ops;
	int ret, layer_num = s->physical.layer_num;

	if (layer_num >= DVD_LAYERS)
		return -EINVAL;

	init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
	cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
	cgc->cmd[6] = layer_num;
	cgc->cmd[7] = s->type;
	cgc->cmd[9] = cgc->buflen & 0xff;

	/*
         * refrain from reporting errors on non-existing layers (mainly)
         */
	cgc->quiet = 1;

	ret = cdo->generic_packet(cdi, cgc);
	if (ret)
		return ret;

	base = &buf[4];
	layer = &s->physical.layer[layer_num];

	/*
         * place the data... really ugly, but at least we won't have to
         * worry about endianess in userspace.
         */
	memset(layer, 0, sizeof(*layer));
	layer->book_version = base[0] & 0xf;
	layer->book_type = base[0] >> 4;
	layer->min_rate = base[1] & 0xf;
	layer->disc_size = base[1] >> 4;
	layer->layer_type = base[2] & 0xf;
	layer->track_path = (base[2] >> 4) & 1;
	layer->nlayers = (base[2] >> 5) & 3;
	layer->track_density = base[3] & 0xf;
	layer->linear_density = base[3] >> 4;
	layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
	layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
	layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
	layer->bca = base[16] >> 7;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
312
84.32%
4
50.00%
linus torvalds
linus torvalds
31
8.38%
1
12.50%
marcin slusarz
marcin slusarz
15
4.05%
1
12.50%
fujita tomonori
fujita tomonori
11
2.97%
1
12.50%
thomas bogendoerfer
thomas bogendoerfer
1
0.27%
1
12.50%
Total
370
100.00%
8
100.00%



static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s,
				struct packet_command *cgc)
{
	int ret;
	u_char buf[8];
	struct cdrom_device_ops *cdo = cdi->ops;

	init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
	cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
	cgc->cmd[6] = s->copyright.layer_num;
	cgc->cmd[7] = s->type;
	cgc->cmd[8] = cgc->buflen >> 8;
	cgc->cmd[9] = cgc->buflen & 0xff;

	ret = cdo->generic_packet(cdi, cgc);
	if (ret)
		return ret;

	s->copyright.cpst = buf[4];
	s->copyright.rmi = buf[5];

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
126
81.82%
4
57.14%
marcin slusarz
marcin slusarz
16
10.39%
1
14.29%
fujita tomonori
fujita tomonori
11
7.14%
1
14.29%
thomas bogendoerfer
thomas bogendoerfer
1
0.65%
1
14.29%
Total
154
100.00%
7
100.00%



static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s,
				struct packet_command *cgc)
{
	int ret, size;
	u_char *buf;
	struct cdrom_device_ops *cdo = cdi->ops;

	size = sizeof(s->disckey.value) + 4;

	buf = kmalloc(size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
	cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
	cgc->cmd[7] = s->type;
	cgc->cmd[8] = size >> 8;
	cgc->cmd[9] = size & 0xff;
	cgc->cmd[10] = s->disckey.agid << 6;

	ret = cdo->generic_packet(cdi, cgc);
	if (!ret)
		memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));

	kfree(buf);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
165
89.19%
5
83.33%
marcin slusarz
marcin slusarz
20
10.81%
1
16.67%
Total
185
100.00%
6
100.00%



static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s,
			struct packet_command *cgc)
{
	int ret, size = 4 + 188;
	u_char *buf;
	struct cdrom_device_ops *cdo = cdi->ops;

	buf = kmalloc(size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
	cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
	cgc->cmd[7] = s->type;
	cgc->cmd[9] = cgc->buflen & 0xff;

	ret = cdo->generic_packet(cdi, cgc);
	if (ret)
		goto out;

	s->bca.len = buf[0] << 8 | buf[1];
	if (s->bca.len < 12 || s->bca.len > 188) {
		cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n",
		       s->bca.len);
		ret = -EIO;
		goto out;
	}
	memcpy(s->bca.value, &buf[4], s->bca.len);
	ret = 0;
out:
	kfree(buf);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
150
69.44%
4
50.00%
marcin slusarz
marcin slusarz
59
27.31%
1
12.50%
fujita tomonori
fujita tomonori
5
2.31%
1
12.50%
jens axboe
jens axboe
1
0.46%
1
12.50%
joe perches
joe perches
1
0.46%
1
12.50%
Total
216
100.00%
8
100.00%



static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s,
				struct packet_command *cgc)
{
	int ret = 0, size;
	u_char *buf;
	struct cdrom_device_ops *cdo = cdi->ops;

	size = sizeof(s->manufact.value) + 4;

	buf = kmalloc(size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
	cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
	cgc->cmd[7] = s->type;
	cgc->cmd[8] = size >> 8;
	cgc->cmd[9] = size & 0xff;

	ret = cdo->generic_packet(cdi, cgc);
	if (ret)
		goto out;

	s->manufact.len = buf[0] << 8 | buf[1];
	if (s->manufact.len < 0) {
		cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n",
		       s->manufact.len);
		ret = -EIO;
	} else {
		if (s->manufact.len > 2048) {
			cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d): truncating to 2048\n",
			       s->manufact.len);
			s->manufact.len = 2048;
		}
		memcpy(s->manufact.value, &buf[4], s->manufact.len);
	}

out:
	kfree(buf);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
199
77.43%
5
55.56%
andrew morton
andrew morton
31
12.06%
1
11.11%
marcin slusarz
marcin slusarz
22
8.56%
1
11.11%
joe perches
joe perches
4
1.56%
1
11.11%
edward falk
edward falk
1
0.39%
1
11.11%
Total
257
100.00%
9
100.00%



static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s,
				struct packet_command *cgc)
{
	switch (s->type) {
	case DVD_STRUCT_PHYSICAL:
		return dvd_read_physical(cdi, s, cgc);

	case DVD_STRUCT_COPYRIGHT:
		return dvd_read_copyright(cdi, s, cgc);

	case DVD_STRUCT_DISCKEY:
		return dvd_read_disckey(cdi, s, cgc);

	case DVD_STRUCT_BCA:
		return dvd_read_bca(cdi, s, cgc);

	case DVD_STRUCT_MANUFACT:
		return dvd_read_manufact(cdi, s, cgc);
		
	default:
		cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
		       s->type);
		return -EINVAL;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
93
85.32%
1
33.33%
marcin slusarz
marcin slusarz
15
13.76%
1
33.33%
joe perches
joe perches
1
0.92%
1
33.33%
Total
109
100.00%
3
100.00%



int cdrom_mode_sense(struct cdrom_device_info *cdi,
		     struct packet_command *cgc,
		     int page_code, int page_control)
{
	struct cdrom_device_ops *cdo = cdi->ops;

	memset(cgc->cmd, 0, sizeof(cgc->cmd));

	cgc->cmd[0] = GPCMD_MODE_SENSE_10;
	cgc->cmd[2] = page_code | (page_control << 6);
	cgc->cmd[7] = cgc->buflen >> 8;
	cgc->cmd[8] = cgc->buflen & 0xff;
	cgc->data_direction = CGC_DATA_READ;
	return cdo->generic_packet(cdi, cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
111
99.11%
3
75.00%
al viro
al viro
1
0.89%
1
25.00%
Total
112
100.00%
4
100.00%



int cdrom_mode_select(struct cdrom_device_info *cdi,
		      struct packet_command *cgc)
{
	struct cdrom_device_ops *cdo = cdi->ops;

	memset(cgc->cmd, 0, sizeof(cgc->cmd));
	memset(cgc->buffer, 0, 2);
	cgc->cmd[0] = GPCMD_MODE_SELECT_10;
	cgc->cmd[1] = 0x10;		/* PF */
	cgc->cmd[7] = cgc->buflen >> 8;
	cgc->cmd[8] = cgc->buflen & 0xff;
	cgc->data_direction = CGC_DATA_WRITE;
	return cdo->generic_packet(cdi, cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
111
99.11%
3
75.00%
al viro
al viro
1
0.89%
1
25.00%
Total
112
100.00%
4
100.00%



static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
				 struct cdrom_subchnl *subchnl, int mcn)
{
	struct cdrom_device_ops *cdo = cdi->ops;
	struct packet_command cgc;
	char buffer[32];
	int ret;

	init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
	cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
	cgc.cmd[1] = 2;     /* MSF addressing */
	cgc.cmd[2] = 0x40;  /* request subQ data */
	cgc.cmd[3] = mcn ? 2 : 1;
	cgc.cmd[8] = 16;

	if ((ret = cdo->generic_packet(cdi, &cgc)))
		return ret;

	subchnl->cdsc_audiostatus = cgc.buffer[1];
	subchnl->cdsc_format = CDROM_MSF;
	subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
	subchnl->cdsc_trk = cgc.buffer[6];
	subchnl->cdsc_ind = cgc.buffer[7];

	subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
	subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
	subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
	subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
	subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
	subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
259
96.64%
4
57.14%
fujita tomonori
fujita tomonori
7
2.61%
1
14.29%
al viro
al viro
1
0.37%
1
14.29%
thomas bogendoerfer
thomas bogendoerfer
1
0.37%
1
14.29%
Total
268
100.00%
7
100.00%

/*
 * Specific READ_10 interface
 */


static int cdrom_read_cd(struct cdrom_device_info *cdi,
			 struct packet_command *cgc, int lba,
			 int blocksize, int nblocks)
{
	struct cdrom_device_ops *cdo = cdi->ops;

	memset(&cgc->cmd, 0, sizeof(cgc->cmd));
	cgc->cmd[0] = GPCMD_READ_10;
	cgc->cmd[2] = (lba >> 24) & 0xff;
	cgc->cmd[3] = (lba >> 16) & 0xff;
	cgc->cmd[4] = (lba >>  8) & 0xff;
	cgc->cmd[5] = lba & 0xff;
	cgc->cmd[6] = (nblocks >> 16) & 0xff;
	cgc->cmd[7] = (nblocks >>  8) & 0xff;
	cgc->cmd[8] = nblocks & 0xff;
	cgc->buflen = blocksize * nblocks;
	return cdo->generic_packet(cdi, cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
174
99.43%
1
50.00%
al viro
al viro
1
0.57%
1
50.00%
Total
175
100.00%
2
100.00%

/* very generic interface for reading the various types of blocks */


static int cdrom_read_block(struct cdrom_device_info *cdi,
			    struct packet_command *cgc,
			    int lba, int nblocks, int format, int blksize)
{
	struct cdrom_device_ops *cdo = cdi->ops;

	memset(&cgc->cmd, 0, sizeof(cgc->cmd));
	cgc->cmd[0] = GPCMD_READ_CD;
	/* expected sector size - cdda,mode1,etc. */
	cgc->cmd[1] = format << 2;
	/* starting address */
	cgc->cmd[2] = (lba >> 24) & 0xff;
	cgc->cmd[3] = (lba >> 16) & 0xff;
	cgc->cmd[4] = (lba >>  8) & 0xff;
	cgc->cmd[5] = lba & 0xff;
	/* number of blocks */
	cgc->cmd[6] = (nblocks >> 16) & 0xff;
	cgc->cmd[7] = (nblocks >>  8) & 0xff;
	cgc->cmd[8] = nblocks & 0xff;
	cgc->buflen = blksize * nblocks;
	
	/* set the header info returned */
	switch (blksize) {
	case CD_FRAMESIZE_RAW0	: cgc->cmd[9] = 0x58; break;
	case CD_FRAMESIZE_RAW1	: cgc->cmd[9] = 0x78; break;
	case CD_FRAMESIZE_RAW	: cgc->cmd[9] = 0xf8; break;
	default                 : cgc->cmd[9] = 0x10;
	}
	
	return cdo->generic_packet(cdi, cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
247
99.60%
2
66.67%
al viro
al viro
1
0.40%
1
33.33%
Total
248
100.00%
3
100.00%



static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
			       int lba, int nframes)
{
	struct packet_command cgc;
	int ret = 0;
	int nr;

	cdi->last_sense = 0;

	memset(&cgc, 0, sizeof(cgc));

	/*
         * start with will ra.nframes size, back down if alloc fails
         */
	nr = nframes;
	do {
		cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
		if (cgc.buffer)
			break;

		nr >>= 1;
	} while (nr);

	if (!nr)
		return -ENOMEM;

	cgc.data_direction = CGC_DATA_READ;
	while (nframes > 0) {
		if (nr > nframes)
			nr = nframes;

		ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
		if (ret)
			break;
		if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
			ret = -EFAULT;
			break;
		}
		ubuf += CD_FRAMESIZE_RAW * nr;
		nframes -= nr;
		lba += nr;
	}
	kfree(cgc.buffer);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
124
64.25%
3
33.33%
pre-git
pre-git
49
25.39%
2
22.22%
jesper juhl
jesper juhl
16
8.29%
1
11.11%
al viro
al viro
3
1.55%
2
22.22%
dan carpenter
dan carpenter
1
0.52%
1
11.11%
Total
193
100.00%
9
100.00%



static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
			       int lba, int nframes)
{
	struct request_queue *q = cdi->disk->queue;
	struct request *rq;
	struct bio *bio;
	unsigned int len;
	int nr, ret = 0;

	if (!q)
		return -ENXIO;

	cdi->last_sense = 0;

	while (nframes) {
		nr = nframes;
		if (cdi->cdda_method == CDDA_BPC_SINGLE)
			nr = 1;
		if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9))
			nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW;

		len = nr * CD_FRAMESIZE_RAW;

		rq = blk_get_request(q, READ, GFP_KERNEL);
		if (IS_ERR(rq)) {
			ret = PTR_ERR(rq);
			break;
		}
		blk_rq_set_block_pc(rq);

		ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL);
		if (ret) {
			blk_put_request(rq);
			break;
		}

		rq->cmd[0] = GPCMD_READ_CD;
		rq->cmd[1] = 1 << 2;
		rq->cmd[2] = (lba >> 24) & 0xff;
		rq->cmd[3] = (lba >> 16) & 0xff;
		rq->cmd[4] = (lba >>  8) & 0xff;
		rq->cmd[5] = lba & 0xff;
		rq->cmd[6] = (nr >> 16) & 0xff;
		rq->cmd[7] = (nr >>  8) & 0xff;
		rq->cmd[8] = nr & 0xff;
		rq->cmd[9] = 0xf8;

		rq->cmd_len = 12;
		rq->timeout = 60 * HZ;
		bio = rq->bio;

		if (blk_execute_rq(q, cdi->disk, rq, 0)) {
			struct request_sense *s = rq->sense;
			ret = -EIO;
			cdi->last_sense = s->sense_key;
		}

		if (blk_rq_unmap_user(bio))
			ret = -EFAULT;
		blk_put_request(rq);

		if (ret)
			break;

		nframes -= nr;
		lba += nr;
		ubuf += len;
	}

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
357
87.29%
7
53.85%
alan d. brunelle
alan d. brunelle
33
8.07%
1
7.69%
joe lawrence
joe lawrence
7
1.71%
1
7.69%
martin k. petersen
martin k. petersen
6
1.47%
1
7.69%
fujita tomonori
fujita tomonori
4
0.98%
2
15.38%
james bottomley
james bottomley
2
0.49%
1
7.69%
Total
409
100.00%
13
100.00%



static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
			   int lba, int nframes)
{
	int ret;

	if (cdi->cdda_method == CDDA_OLD)
		return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);

retry:
	/*
         * for anything else than success and io error, we need to retry
         */
	ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
	if (!ret || ret != -EIO)
		return ret;

	/*
         * I've seen drives get sense 4/8/3 udma crc errors on multi
         * frame dma, so drop to single frame dma if we need to
         */
	if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
		pr_info("dropping to single frame dma\n");
		cdi->cdda_method = CDDA_BPC_SINGLE;
		goto retry;
	}

	/*
         * so we have an io error of some sort with multi frame dma. if the
         * condition wasn't a hardware error
         * problems, not for any error
         */
	if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
		return ret;

	pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense);
	cdi->cdda_method = CDDA_OLD;
	return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);	
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
144
97.30%
1
50.00%
joe perches
joe perches
4
2.70%
1
50.00%
Total
148
100.00%
2
100.00%



static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
		void __user *argp)
{
	struct cdrom_multisession ms_info;
	u8 requested_format;
	int ret;

	cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");

	if (!(cdi->ops->capability & CDC_MULTI_SESSION))
		return -ENOSYS;

	if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
		return -EFAULT;

	requested_format = ms_info.addr_format;
	if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
		return -EINVAL;
	ms_info.addr_format = CDROM_LBA;

	ret = cdi->ops->get_last_session(cdi, &ms_info);
	if (ret)
		return ret;

	sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);

	if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
		return -EFAULT;

	cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jens axboe
jens axboe
106
66.25%
1
25.00%
christoph hellwig
christoph hellwig
50
31.25%
1
25.00%
al viro
al viro
2
1.25%
1
25.00%
joe perches
joe perches
2
1.25%
1
25.00%
Total
160
100.00%
4
100.00%



static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n");

	if (!CDROM_CAN(CDC_OPEN_TRAY))
		return -ENOSYS;
	if (cdi->use_count != 1 || cdi->keeplocked)
		return -EBUSY;
	if (CDROM_CAN(CDC_LOCK)) {
		int ret = cdi->ops->lock_door(cdi, 0);
		if (ret)
			return ret;
	}

	return cdi->ops->tray_move(cdi, 1);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
62
70.45%
1
25.00%
christoph hellwig
christoph hellwig
23
26.14%
1
25.00%
paolo bonzini
paolo bonzini
2
2.27%
1
25.00%
joe perches
joe perches
1
1.14%
1
25.00%
Total
88
100.00%
4
100.00%



static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");

	if (!CDROM_CAN(CDC_CLOSE_TRAY))
		return -ENOSYS;
	return cdi->ops->tray_move(cdi, 0);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
29
69.05%
1
33.33%
christoph hellwig
christoph hellwig
12
28.57%
1
33.33%
joe perches
joe perches
1
2.38%
1
33.33%
Total
42
100.00%
3
100.00%



static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
		unsigned long arg)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");

	if (!CDROM_CAN(CDC_OPEN_TRAY))
		return -ENOSYS;
	if (cdi->keeplocked)
		return -EBUSY;

	cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
	if (arg)
		cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
54
77.14%
1
25.00%
christoph hellwig
christoph hellwig
13
18.57%
1
25.00%
paolo bonzini
paolo bonzini
2
2.86%
1
25.00%
joe perches
joe perches
1
1.43%
1
25.00%
Total
70
100.00%
4
100.00%



static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
		unsigned long arg)
{
	struct cdrom_changer_info *info;
	int ret;

	cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");

	if (!CDROM_CAN(CDC_MEDIA_CHANGED))
		return -ENOSYS;

	/* cannot select disc or select current disc */
	if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
		return media_changed(cdi, 1);

	if ((unsigned int)arg >= cdi->capacity)
		return -EINVAL;

	info = kmalloc(sizeof(*info), GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	ret = cdrom_read_mech_status(cdi, info);
	if (!ret)
		ret = info->slots[arg].change;
	kfree(info);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
78
58.21%
3
50.00%
jens axboe
jens axboe
35
26.12%
1
16.67%
christoph hellwig
christoph hellwig
20
14.93%
1
16.67%
joe perches
joe perches
1
0.75%
1
16.67%
Total
134
100.00%
6
100.00%



static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
		unsigned long arg)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");

	/*
         * Options need to be in sync with capability.
         * Too late for that, so we have to check each one separately.
         */
	switch (arg) {
	case CDO_USE_FFLAGS:
	case CDO_CHECK_TYPE:
		break;
	case CDO_LOCK:
		if (!CDROM_CAN(CDC_LOCK))
			return -ENOSYS;
		break;
	case 0:
		return cdi->options;
	/* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
	default:
		if (!CDROM_CAN(arg))
			return -ENOSYS;
	}
	cdi->options |= (int) arg;
	return cdi->options;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
69
78.41%
1
33.33%
christoph hellwig
christoph hellwig
18
20.45%
1
33.33%
joe perches
joe perches
1
1.14%
1
33.33%
Total
88
100.00%
3
100.00%



static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
		unsigned long arg)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");

	cdi->options &= ~(int) arg;
	return cdi->options;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
23
62.16%
1
33.33%
christoph hellwig
christoph hellwig
13
35.14%
1
33.33%
joe perches
joe perches
1
2.70%
1
33.33%
Total
37
100.00%
3
100.00%



static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
		unsigned long arg)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");

	if (!CDROM_CAN(CDC_SELECT_SPEED))
		return -ENOSYS;
	return cdi->ops->select_speed(cdi, arg);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
29
63.04%
1
33.33%
christoph hellwig
christoph hellwig
16
34.78%
1
33.33%
joe perches
joe perches
1
2.17%
1
33.33%
Total
46
100.00%
3
100.00%



static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
		unsigned long arg)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");

	if (!CDROM_CAN(CDC_SELECT_DISC))
		return -ENOSYS;

	if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
		if ((int)arg >= cdi->capacity)
			return -EINVAL;
	}

	/*
         * ->select_disc is a hook to allow a driver-specific way of
         * seleting disc.  However, since there is no equivalent hook for
         * cdrom_slot_status this may not actually be useful...
         */
	if (cdi->ops->select_disc)
		return cdi->ops->select_disc(cdi, arg);

	cd_dbg(CD_CHANGER, "Using generic cdrom_select_disc()\n");
	return cdrom_select_disc(cdi, arg);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
73
75.26%
2
50.00%
christoph hellwig
christoph hellwig
22
22.68%
1
25.00%
joe perches
joe perches
2
2.06%
1
25.00%
Total
97
100.00%
4
100.00%



static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
		struct block_device *bdev)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n");

	if (!capable(CAP_SYS_ADMIN))
		return -EACCES;
	if (!CDROM_CAN(CDC_RESET))
		return -ENOSYS;
	invalidate_bdev(bdev);
	return cdi->ops->reset(cdi);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
33
53.23%
1
20.00%
christoph hellwig
christoph hellwig
24
38.71%
1
20.00%
al viro
al viro
4
6.45%
2
40.00%
joe perches
joe perches
1
1.61%
1
20.00%
Total
62
100.00%
5
100.00%



static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
		unsigned long arg)
{
	cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl");

	if (!CDROM_CAN(CDC_LOCK))
		return -EDRIVE_CANT_DO_THIS;

	cdi->keeplocked = arg ? 1 : 0;

	/*
         * Don't unlock the door on multiple opens by default, but allow
         * root to do so.
         */
	if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
		return -EBUSY;
	return cdi->ops->lock_door(cdi, arg);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
63
75.00%
3
50.00%
christoph hellwig
christoph hellwig
17
20.24%
1
16.67%
joe perches
joe perches
2
2.38%
1
16.67%
paolo bonzini
paolo bonzini
2
2.38%
1
16.67%
Total
84
100.00%
6
100.00%



static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
		unsigned long arg)
{
	cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis");

	if (!capable(CAP_SYS_ADMIN))
		return -EACCES;
	debug = arg ? 1 : 0;
	return debug;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
christoph hellwig
christoph hellwig
25
49.02%
1
33.33%
pre-git
pre-git
24
47.06%
1
33.33%
joe perches
joe perches
2
3.92%
1
33.33%
Total
51
100.00%
3
100.00%



static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
	return (cdi->ops->capability & ~cdi->mask);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
19
59.38%
1
33.33%
christoph hellwig
christoph hellwig
12
37.50%
1
33.33%
joe perches
joe perches
1
3.12%
1
33.33%
Total
32
100.00%
3
100.00%

/*
 * The following function is implemented, although very few audio
 * discs give Universal Product Code information, which should just be
 * the Medium Catalog Number on the box.  Note, that the way the code
 * is written on the CD is /not/ uniform across all discs!
 */


static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
		void __user *argp)
{
	struct cdrom_mcn mcn;
	int ret;

	cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");

	if (!(cdi->ops->capability & CDC_MCN))
		return -ENOSYS;
	ret = cdi->ops->get_mcn(cdi, &mcn);
	if (ret)
		return ret;

	if (copy_to_user(argp, &mcn, sizeof(mcn)))
		return -EFAULT;
	cd_dbg(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
54
55.67%
1
33.33%
christoph hellwig
christoph hellwig
41
42.27%
1
33.33%
joe perches
joe perches
2
2.06%
1
33.33%
Total
97
100.00%
3
100.00%



static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
		unsigned long arg)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");

	if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
		return -ENOSYS;
	if (!CDROM_CAN(CDC_SELECT_DISC) ||
	    (arg == CDSL_CURRENT || arg == CDSL_NONE))
		return cdi->ops->drive_status(cdi, CDSL_CURRENT);
	if (((int)arg >= cdi->capacity))
		return -EINVAL;
	return cdrom_slot_status(cdi, arg);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
73
77.66%
2
50.00%
christoph hellwig
christoph hellwig
20
21.28%
1
25.00%
joe perches
joe perches
1
1.06%
1
25.00%
Total
94
100.00%
4
100.00%

/*
 * 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.  Unfortunately, while this
 * is often the case, it is also very common for CDs to have some tracks
 * with data, and some tracks with audio.  Just because I feel like it,
 * I declare the following to be the best way to cope.  If the CD has ANY
 * data tracks on it, it will be returned as a data CD.  If it has any XA
 * tracks, I will return it as that.  Now I could simplify this interface
 * by combining these  returns with the above, but this more clearly
 * demonstrates the problem with the current interface.  Too bad this
 * wasn't designed to use bitmasks...         -Erik
 *
 * Well, now we have the option CDS_MIXED: a mixed-type CD.
 * User level programmers might feel the ioctl is not very useful.
 *                                      ---david
 */


static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
{
	tracktype tracks;

	cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");

	cdrom_count_tracks(cdi, &tracks);
	if (tracks.error)
		return tracks.error;

	/* Policy mode on */
	if (tracks.audio > 0) {
		if (!tracks.data && !tracks.cdi && !tracks.xa)
			return CDS_AUDIO;
		else
			return CDS_MIXED;
	}

	if (tracks.cdi > 0)
		return CDS_XA_2_2;
	if (tracks.xa > 0)
		return CDS_XA_2_1;
	if (tracks.data > 0)
		return CDS_DATA_1;
	/* Policy mode off */

	cd_dbg(CD_WARNING, "This disc doesn't have any tracks I recognize!\n");
	return CDS_NO_INFO;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
105
88.24%
2
50.00%
christoph hellwig
christoph hellwig
12
10.08%
1
25.00%
joe perches
joe perches
2
1.68%
1
25.00%
Total
119
100.00%
4
100.00%



static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
{
	cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
	return cdi->capacity;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
13
56.52%
1
33.33%
christoph hellwig
christoph hellwig
9
39.13%
1
33.33%
joe perches
joe perches
1
4.35%
1
33.33%
Total
23
100.00%
3
100.00%



static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
		void __user *argp)
{
	struct cdrom_subchnl q;
	u8 requested, back;
	int ret;

	/* cd_dbg(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/

	if (copy_from_user(&q, argp, sizeof(q)))
		return -EFAULT;

	requested = q.cdsc_format;
	if (requested != CDROM_MSF && requested != CDROM_LBA)
		return -EINVAL;
	q.cdsc_format = CDROM_MSF;

	ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
	if (ret)
		return ret;

	back = q.cdsc_format; /* local copy */
	sanitize_format(&q.cdsc_absaddr, &back, requested);
	sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);

	if (copy_to_user(argp, &q, sizeof(q)))
		return -EFAULT;
	/* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
99
63.87%
1
33.33%
christoph hellwig
christoph hellwig
54
34.84%
1
33.33%
joe perches
joe perches
2
1.29%
1
33.33%
Total
155
100.00%
3
100.00%



static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
		void __user *argp)
{
	struct cdrom_tochdr header;
	int ret;

	/* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */

	if (copy_from_user(&header, argp, sizeof(header)))
		return -EFAULT;

	ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
	if (ret)
		return ret;

	if (copy_to_user(argp, &header, sizeof(header)))
		return -EFAULT;
	/* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
christoph hellwig
christoph hellwig
51
57.30%
1
33.33%
pre-git
pre-git
36
40.45%
1
33.33%
joe perches
joe perches
2
2.25%
1
33.33%
Total
89
100.00%
3
100.00%



static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
		void __user *argp)
{
	struct cdrom_tocentry entry;
	u8 requested_format;
	int ret;

	/* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */

	if (copy_from_user(&entry, argp, sizeof(entry)))
		return -EFAULT;

	requested_format = entry.cdte_format;
	if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
		return -EINVAL;
	/* make interface to low-level uniform */
	entry.cdte_format = CDROM_MSF;
	ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
	if (ret)
		return ret;
	sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);

	if (copy_to_user(argp, &entry, sizeof(entry)))
		return -EFAULT;
	/* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
77
57.46%
2
50.00%
christoph hellwig
christoph hellwig
55
41.04%
1
25.00%
joe perches
joe perches
2
1.49%
1
25.00%
Total
134
100.00%
4
100.00%



static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
		void __user *argp)
{
	struct cdrom_msf msf;

	cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");

	if (!CDROM_CAN(CDC_PLAY_AUDIO))
		return -ENOSYS;
	if (copy_from_user(&msf, argp, sizeof(msf)))
		return -EFAULT;
	return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
christoph hellwig
christoph hellwig
38
52.05%
1
20.00%
pre-git
pre-git
34
46.58%
3
60.00%
joe perches
joe perches
1
1.37%
1
20.00%
Total
73
100.00%
5
100.00%



static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
		void __user *argp)
{
	struct cdrom_ti ti;
	int ret;

	cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");

	if (!CDROM_CAN(CDC_PLAY_AUDIO))
		return -ENOSYS;
	if (copy_from_user(&ti, argp, sizeof(ti)))
		return -EFAULT;

	ret = check_for_audio_disc(cdi, cdi->ops);
	if (ret)
		return ret;
	return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
christoph hellwig
christoph hellwig
57
60.64%
1
14.29%
pre-git
pre-git
36
38.30%
5
71.43%
joe perches
joe perches
1
1.06%
1
14.29%
Total
94
100.00%
7
100.00%



static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
		void __user *argp)
{
	struct cdrom_volctrl volume;

	cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");

	if (!CDROM_CAN(CDC_PLAY_AUDIO))
		return -ENOSYS;
	if (copy_from_user(&volume, argp, sizeof(volume)))
		return -EFAULT;
	return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
christoph hellwig
christoph hellwig
38
52.05%
1
25.00%
pre-git
pre-git
34
46.58%
2
50.00%
joe perches
joe perches
1
1.37%
1
25.00%
Total
73
100.00%
4
100.00%



static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
		void __user *argp)
{
	struct cdrom_volctrl volume;
	int ret;

	cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n");

	if (!CDROM_CAN(CDC_PLAY_AUDIO))
		return -ENOSYS;

	ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
	if (ret)
		return ret;

	if (copy_to_user(argp, &volume, sizeof(volume)))
		return -EFAULT;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
christoph hellwig
christoph hellwig
69
79.31%
1
25.00%
pre-git
pre-git
17
19.54%
2
50.00%
joe perches
joe perches
1
1.15%
1
25.00%
Total
87
100.00%
4
100.00%



static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
		unsigned int cmd)
{
	int ret;

	cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");

	if (!CDROM_CAN(CDC_PLAY_AUDIO))
		return -ENOSYS;
	ret = check_for_audio_disc(cdi, cdi->ops);
	if (ret)
		return ret;
	return cdi->ops->audio_ioctl(cdi, cmd, NULL);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
christoph hellwig
christoph hellwig
51
73.91%
1
25.00%
pre-git
pre-git
17
24.64%
2
50.00%
joe perches
joe perches
1
1.45%
1
25.00%
Total
69
100.00%
4
100.00%

/*
 * Required when we need to use READ_10 to issue other than 2048 block
 * reads
 */


static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
{
	struct cdrom_device_ops *cdo = cdi->ops;
	struct packet_command cgc;
	struct modesel_head mh;

	memset(&mh, 0, sizeof(mh));
	mh.block_desc_length = 0x08;
	mh.block_length_med = (size >> 8) & 0xff;
	mh.block_length_lo = size & 0xff;

	memset(&cgc, 0, sizeof(cgc));
	cgc.cmd[0] = 0x15;
	cgc.cmd[1] = 1 << 4;
	cgc.cmd[4] = 12;
	cgc.buflen = sizeof(mh);
	cgc.buffer = (char *) &mh;
	cgc.data_direction = CGC_DATA_WRITE;
	mh.block_desc_length = 0x08;
	mh.block_length_med = (size >> 8) & 0xff;
	mh.block_length_lo = size & 0xff;

	return cdo->generic_packet(cdi, &cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
142
81.14%
1
20.00%
christoph hellwig
christoph hellwig
27
15.43%
1
20.00%
pre-git
pre-git
5
2.86%
2
40.00%
al viro
al viro
1
0.57%
1
20.00%
Total
175
100.00%
5
100.00%



static int cdrom_get_track_info(struct cdrom_device_info *cdi,
				__u16 track, __u8 type, track_information *ti)
{
	struct cdrom_device_ops *cdo = cdi->ops;
	struct packet_command cgc;
	int ret, buflen;

	init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
	cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
	cgc.cmd[1] = type & 3;
	cgc.cmd[4] = (track & 0xff00) >> 8;
	cgc.cmd[5] = track & 0xff;
	cgc.cmd[8] = 8;
	cgc.quiet = 1;

	ret = cdo->generic_packet(cdi, &cgc);
	if (ret)
		return ret;

	buflen = be16_to_cpu(ti->track_information_length) +
		sizeof(ti->track_information_length);

	if (buflen > sizeof(track_information))
		buflen = sizeof(track_information);

	cgc.cmd[8] = cgc.buflen = buflen;
	ret = cdo->generic_packet(cdi, &cgc);
	if (ret)
		return ret;

	/* return actual fill size */
	return buflen;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
121
60.80%
2
14.29%
pre-git
pre-git
60
30.15%
10
71.43%
marcin slusarz
marcin slusarz
10
5.03%
1
7.14%
dave jones
dave jones
8
4.02%
1
7.14%
Total
199
100.00%
14
100.00%

/* return the last written block on the CD-R media. this is for the udf
   file system. */


int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
{
	struct cdrom_tocentry toc;
	disc_information di;
	track_information ti;
	__u32 last_track;
	int ret = -1, ti_size;

	if (!CDROM_CAN(CDC_GENERIC_PACKET))
		goto use_toc;

	ret = cdrom_get_disc_info(cdi, &di);
	if (ret < (int)(offsetof(typeof(di), last_track_lsb)
			+ sizeof(di.last_track_lsb)))
		goto use_toc;

	/* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
	last_track = (di.last_track_msb << 8) | di.last_track_lsb;
	ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
	if (ti_size < (int)offsetof(typeof(ti), track_start))
		goto use_toc;

	/* if this track is blank, try the previous. */
	if (ti.blank) {
		if (last_track == 1)
			goto use_toc;
		last_track--;
		ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
	}

	if (ti_size < (int)(offsetof(typeof(ti), track_size)
				+ sizeof(ti.track_size)))
		goto use_toc;

	/* if last recorded field is valid, return it. */
	if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
				+ sizeof(ti.last_rec_address))) {
		*last_written = be32_to_cpu(ti.last_rec_address);
	} else {
		/* make it up instead */
		*last_written = be32_to_cpu(ti.track_start) +
				be32_to_cpu(ti.track_size);
		if (ti.free_blocks)
			*last_written -= (be32_to_cpu(ti.free_blocks) + 7);
	}
	return 0;

	/* this is where we end up if the drive either can't do a
           GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
           it doesn't give enough information or fails. then we return
           the toc contents. */
use_toc:
	toc.cdte_format = CDROM_MSF;
	toc.cdte_track = CDROM_LEADOUT;
	if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
		return ret;
	sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
	*last_written = toc.cdte_addr.lba;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
323
92.29%
2
40.00%
pre-git
pre-git
18
5.14%
2
40.00%
marcin slusarz
marcin slusarz
9
2.57%
1
20.00%
Total
350
100.00%
5
100.00%

/* return the next writable block. also for udf file system. */


static int cdrom_get_next_writable(struct cdrom_device_info *cdi,
				   long *next_writable)
{
	disc_information di;
	track_information ti;
	__u16 last_track;
	int ret, ti_size;

	if (!CDROM_CAN(CDC_GENERIC_PACKET))
		goto use_last_written;

	ret = cdrom_get_disc_info(cdi, &di);
	if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
				+ sizeof(di.last_track_lsb))
		goto use_last_written;

	/* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
	last_track = (di.last_track_msb << 8) | di.last_track_lsb;
	ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
	if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
		goto use_last_written;

	/* if this track is blank, try the previous. */
	if (ti.blank) {
		if (last_track == 1)
			goto use_last_written;
		last_track--;
		ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
		if (ti_size < 0)
			goto use_last_written;
	}

	/* if next recordable address field is valid, use it. */
	if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
				+ sizeof(ti.next_writable)) {
		*next_writable = be32_to_cpu(ti.next_writable);
		return 0;
	}

use_last_written:
	ret = cdrom_get_last_written(cdi, next_writable);
	if (ret) {
		*next_writable = 0;
		return ret;
	} else {
		*next_writable += 7;
		return 0;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
249
100.00%
2
100.00%
Total
249
100.00%
2
100.00%



static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi,
					      void __user *arg,
					      struct packet_command *cgc,
					      int cmd)
{
	struct request_sense sense;
	struct cdrom_msf msf;
	int blocksize = 0, format = 0, lba;
	int ret;

	switch (cmd) {
	case CDROMREADRAW:
		blocksize = CD_FRAMESIZE_RAW;
		break;
	case CDROMREADMODE1:
		blocksize = CD_FRAMESIZE;
		format = 2;
		break;
	case CDROMREADMODE2:
		blocksize = CD_FRAMESIZE_RAW0;
		break;
	}
	if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
		return -EFAULT;
	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 = kzalloc(blocksize, GFP_KERNEL);
	if (cgc->buffer == NULL)
		return -ENOMEM;

	memset(&sense, 0, sizeof(sense));
	cgc->sense = &sense;
	cgc->data_direction = CGC_DATA_READ;
	ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize);
	if (ret && sense.sense_key == 0x05 &&
	    sense.asc == 0x20 &&
	    sense.ascq == 0x00) {
		/*
                 * SCSI-II devices are not required to support
                 * READ_CD, so let's try switching block size
                 */
		/* FIXME: switch back again... */
		ret = cdrom_switch_blocksize(cdi, blocksize);
		if (ret)
			goto out;
		cgc->sense = NULL;
		ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1);
		ret |= cdrom_switch_blocksize(cdi, blocksize);
	}
	if (!ret && copy_to_user(arg, cgc->buffer, blocksize))
		ret = -EFAULT;
out:
	kfree(cgc->buffer);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
305
100.00%
2
100.00%
Total
305
100.00%
2
100.00%



static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi,
					       void __user *arg)
{
	struct cdrom_read_audio ra;
	int lba;

	if (copy_from_user(&ra, (struct cdrom_read_audio __user *)arg,
			   sizeof(ra)))
		return -EFAULT;

	if (ra.addr_format == CDROM_MSF)
		lba = msf_to_lba(ra.addr.msf.minute,
				 ra.addr.msf.second,
				 ra.addr.msf.frame);
	else if (ra.addr_format == CDROM_LBA)
		lba = ra.addr.lba;
	else
		return -EINVAL;

	/* FIXME: we need upper bound checking, too!! */
	if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
		return -EINVAL;

	return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
97
65.99%
1
10.00%
pre-git
pre-git
42
28.57%
6
60.00%
linus torvalds
linus torvalds
5
3.40%
1
10.00%
jens axboe
jens axboe
2
1.36%
1
10.00%
andrew morton
andrew morton
1
0.68%
1
10.00%
Total
147
100.00%
10
100.00%



static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi,
					       void __user *arg)
{
	int ret;
	struct cdrom_subchnl q;
	u_char requested, back;
	if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q)))
		return -EFAULT;
	requested = q.cdsc_format;
	if (!((requested == CDROM_MSF) ||
	      (requested == CDROM_LBA)))
		return -EINVAL;
	q.cdsc_format = CDROM_MSF;
	ret = cdrom_read_subchannel(cdi, &q, 0);
	if (ret)
		return ret;
	back = q.cdsc_format; /* local copy */
	sanitize_format(&q.cdsc_absaddr, &back, requested);
	sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
	if (copy_to_user((struct cdrom_subchnl __user *)arg, &q, sizeof(q)))
		return -EFAULT;
	/* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
110
64.71%
6
66.67%
joe perches
joe perches
38
22.35%
2
22.22%
marcin slusarz
marcin slusarz
22
12.94%
1
11.11%
Total
170
100.00%
9
100.00%



static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi,
					     void __user *arg,
					     struct packet_command *cgc)
{
	struct cdrom_device_ops *cdo = cdi->ops;
	struct cdrom_msf msf;
	cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
	if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
		return -EFAULT;
	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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
102
64.56%
4
57.14%
marcin slusarz
marcin slusarz
37
23.42%
1
14.29%
joe perches
joe perches
19
12.03%
2
28.57%
Total
158
100.00%
7
100.00%



static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi,
					     void __user *arg,
					     struct packet_command *cgc)
{
	struct cdrom_device_ops *cdo = cdi->ops;
	struct cdrom_blk blk;
	cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
	if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk)))
		return -EFAULT;
	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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
130
69.89%
6
66.67%
marcin slusarz
marcin slusarz
37
19.89%
1
11.11%
joe perches
joe perches
19
10.22%
2
22.22%
Total
186
100.00%
9
100.00%



static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi,
					   void __user *arg,
					   struct packet_command *cgc,
					   unsigned int cmd)
{
	struct cdrom_volctrl volctrl;
	unsigned char buffer[32];
	char mask[sizeof(buffer)];
	unsigned short offset;
	int ret;

	cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n");

	if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg,
			   sizeof(volctrl)))
		return -EFAULT;

	cgc->buffer = buffer;
	cgc->buflen = 24;
	ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0);
	if (ret)
		return ret;
		
	/* originally the code depended on buffer[1] to determine
           how much data is available for transfer. buffer[1] is
           unfortunately ambigious and the only reliable way seem
           to be to simply skip over the block descriptor... */
	offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6));

	if (offset + 16 > sizeof(buffer))
		return -E2BIG;

	if (offset + 16 > cgc->buflen) {
		cgc->buflen = offset + 16;
		ret = cdrom_mode_sense(cdi, cgc,
				       GPMODE_AUDIO_CTL_PAGE, 0);
		if (ret)
			return ret;
	}

	/* sanity check */
	if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
	    buffer[offset + 1] < 14)
		return -EINVAL;

	/* now we have the current volume settings. if it was only
           a CDROMVOLREAD, return these values */
	if (cmd == CDROMVOLREAD) {
		volctrl.channel0 = buffer[offset+9];
		volctrl.channel1 = buffer[offset+11];
		volctrl.channel2 = buffer[offset+13];
		volctrl.channel3 = buffer[offset+15];
		if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl,
				 sizeof(volctrl)))
			return -EFAULT;
		return 0;
	}
		
	/* get the volume mask */
	cgc->buffer = mask;
	ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1);
	if (ret)
		return ret;

	buffer[offset + 9]  = volctrl.channel0 & mask[offset + 9];
	buffer[offset + 11] = volctrl.channel1 & mask[offset + 11];
	buffer[offset + 13] = volctrl.channel2 & mask[offset + 13];
	buffer[offset + 15] = volctrl.channel3 & mask[offset + 15];

	/* set volume */
	cgc->buffer = buffer + offset - 8;
	memset(cgc->buffer, 0, 8);
	return cdrom_mode_select(cdi, cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
259
60.51%
4
44.44%
andy polyakov
andy polyakov
79
18.46%
1
11.11%
marcin slusarz
marcin slusarz
51
11.92%
1
11.11%
joe perches
joe perches
38
8.88%
2
22.22%
alexey dobriyan
alexey dobriyan
1
0.23%
1
11.11%
Total
428
100.00%
9
100.00%



static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi,
					       struct packet_command *cgc,
					       int cmd)
{
	struct cdrom_device_ops *cdo = cdi->ops;
	cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
	cgc->cmd[0] = GPCMD_START_STOP_UNIT;
	cgc->cmd[1] = 1;
	cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
	cgc->data_direction = CGC_DATA_NONE;
	return cdo->generic_packet(cdi, cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
55
63.22%
5
71.43%
marcin slusarz
marcin slusarz
31
35.63%
1
14.29%
joe perches
joe perches
1
1.15%
1
14.29%
Total
87
100.00%
7
100.00%



static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi,
						 struct packet_command *cgc,
						 int cmd)
{
	struct cdrom_device_ops *cdo = cdi->ops;
	cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
	cgc->cmd[0] = GPCMD_PAUSE_RESUME;
	cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
	cgc->data_direction = CGC_DATA_NONE;
	return cdo->generic_packet(cdi, cgc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
47
60.26%
5
71.43%
marcin slusarz
marcin slusarz
30
38.46%
1
14.29%
joe perches
joe perches
1
1.28%
1
14.29%
Total
78
100.00%
7
100.00%



static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi,
					      void __user *arg,
					      struct packet_command *cgc)
{
	int ret;
	dvd_struct *s;
	int size = sizeof(dvd_struct);

	if (!CDROM_CAN(CDC_DVD))
		return -ENOSYS;

	s = memdup_user(arg, size);
	if (IS_ERR(s))
		return PTR_ERR(s);

	cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");

	ret = dvd_read_struct(cdi, s, cgc);
	if (ret)
		goto out;

	if (copy_to_user(arg, s, size))
		ret = -EFAULT;
out:
	kfree(s);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
74
60.66%
7
63.64%
marcin slusarz
marcin slusarz
37
30.33%
2
18.18%
al viro
al viro
10
8.20%
1
9.09%
joe perches
joe perches
1
0.82%
1
9.09%
Total
122
100.00%
11
100.00%



static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi,
				       void __user *arg)
{
	int ret;
	dvd_authinfo ai;
	if (!CDROM_CAN(CDC_DVD))
		return -ENOSYS;
	cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n");
	if (copy_from_user(&ai, (dvd_authinfo __user *)arg, sizeof(ai)))
		return -EFAULT;
	ret = dvd_do_auth(cdi, &ai);
	if (ret)
		return ret;
	if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai)))
		return -EFAULT;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
51
46.36%
5
62.50%
joe perches
joe perches
37
33.64%
2
25.00%
marcin slusarz
marcin slusarz
22
20.00%
1
12.50%
Total
110
100.00%
8
100.00%



static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi,
						  void __user *arg)
{
	int ret;
	long next = 0;
	cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
	ret = cdrom_get_next_writable(cdi, &next);
	if (ret)
		return ret;
	if (copy_to_user((long __user *)arg, &next, sizeof(next)))
		return -EFAULT;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
51
67.11%
2
40.00%
marcin slusarz
marcin slusarz
18
23.68%
1
20.00%
pre-git
pre-git
7
9.21%
2
40.00%
Total
76
100.00%
5
100.00%



static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi,
						 void __user *arg)
{
	int ret;
	long last = 0;
	cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
	ret = cdrom_get_last_written(cdi, &last);
	if (ret)
		return ret;
	if (copy_to_user((long __user *)arg, &last, sizeof(last)))
		return -EFAULT;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
76
100.00%
1
100.00%
Total
76
100.00%
1
100.00%



static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
		     unsigned long arg)
{
	struct packet_command cgc;
	void __user *userptr = (void __user *)arg;

	memset(&cgc, 0, sizeof(cgc));

	/* build a unified command and queue it through
           cdo->generic_packet() */
	switch (cmd) {
	case CDROMREADRAW:
	case CDROMREADMODE1:
	case CDROMREADMODE2:
		return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd);
	case CDROMREADAUDIO:
		return mmc_ioctl_cdrom_read_audio(cdi, userptr);
	case CDROMSUBCHNL:
		return mmc_ioctl_cdrom_subchannel(cdi, userptr);
	case CDROMPLAYMSF:
		return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc);
	case CDROMPLAYBLK:
		return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc);
	case CDROMVOLCTRL:
	case CDROMVOLREAD:
		return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd);
	case CDROMSTART:
	case CDROMSTOP:
		return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd);
	case CDROMPAUSE:
	case CDROMRESUME:
		return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd);
	case DVD_READ_STRUCT:
		return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc);
	case DVD_AUTH:
		return mmc_ioctl_dvd_auth(cdi, userptr);
	case CDROM_NEXT_WRITABLE:
		return mmc_ioctl_cdrom_next_writable(cdi, userptr);
	case CDROM_LAST_WRITTEN:
		return mmc_ioctl_cdrom_last_written(cdi, userptr);
	}

	return -ENOTTY;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
203
87.88%
2
33.33%
pre-git
pre-git
26
11.26%
3
50.00%
al viro
al viro
2
0.87%
1
16.67%
Total
231
100.00%
6
100.00%

/*
 * Just about every imaginable ioctl is supported in the Uniform layer
 * these days.
 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
 */


int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
		fmode_t mode, unsigned int cmd, unsigned long arg)
{
	void __user *argp = (void __user *)arg;
	int ret;

	/*
         * Try the generic SCSI command ioctl's first.
         */
	ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
	if (ret != -ENOTTY)
		return ret;

	switch (cmd) {
	case CDROMMULTISESSION:
		return cdrom_ioctl_multisession(cdi, argp);
	case CDROMEJECT:
		return cdrom_ioctl_eject(cdi);
	case CDROMCLOSETRAY:
		return cdrom_ioctl_closetray(cdi);
	case CDROMEJECT_SW:
		return cdrom_ioctl_eject_sw(cdi, arg);
	case CDROM_MEDIA_CHANGED:
		return cdrom_ioctl_media_changed(cdi, arg);
	case CDROM_SET_OPTIONS:
		return cdrom_ioctl_set_options(cdi, arg);
	case CDROM_CLEAR_OPTIONS:
		return cdrom_ioctl_clear_options(cdi, arg);
	case CDROM_SELECT_SPEED:
		return cdrom_ioctl_select_speed(cdi, arg);
	case CDROM_SELECT_DISC:
		return cdrom_ioctl_select_disc(cdi, arg);
	case CDROMRESET:
		return cdrom_ioctl_reset(cdi, bdev);
	case CDROM_LOCKDOOR:
		return cdrom_ioctl_lock_door(cdi, arg);
	case CDROM_DEBUG:
		return cdrom_ioctl_debug(cdi, arg);
	case CDROM_GET_CAPABILITY:
		return cdrom_ioctl_get_capability(cdi);
	case CDROM_GET_MCN:
		return cdrom_ioctl_get_mcn(cdi, argp);
	case CDROM_DRIVE_STATUS:
		return cdrom_ioctl_drive_status(cdi, arg);
	case CDROM_DISC_STATUS:
		return cdrom_ioctl_disc_status(cdi);
	case CDROM_CHANGER_NSLOTS:
		return cdrom_ioctl_changer_nslots(cdi);
	}

	/*
         * Use the ioctls that are implemented through the generic_packet()
         * interface. this may look at bit funny, but if -ENOTTY is
         * returned that particular ioctl is not implemented and we
         * let it go through the device specific ones.
         */
	if (CDROM_CAN(CDC_GENERIC_PACKET)) {
		ret = mmc_ioctl(cdi, cmd, arg);
		if (ret != -ENOTTY)
			return ret;
	}

	/*
         * Note: most of the cd_dbg() calls are commented out here,
         * because they fill up the sys log when CD players poll
         * the drive.
         */
	switch (cmd) {
	case CDROMSUBCHNL:
		return cdrom_ioctl_get_subchnl(cdi, argp);
	case CDROMREADTOCHDR:
		return cdrom_ioctl_read_tochdr(cdi, argp);
	case CDROMREADTOCENTRY:
		return cdrom_ioctl_read_tocentry(cdi, argp);
	case CDROMPLAYMSF:
		return cdrom_ioctl_play_msf(cdi, argp);
	case CDROMPLAYTRKIND:
		return cdrom_ioctl_play_trkind(cdi, argp);
	case CDROMVOLCTRL:
		return cdrom_ioctl_volctrl(cdi, argp);
	case CDROMVOLREAD:
		return cdrom_ioctl_volread(cdi, argp);
	case CDROMSTART:
	case CDROMSTOP:
	case CDROMPAUSE:
	case CDROMRESUME:
		return cdrom_ioctl_audioctl(cdi, cmd);
	}

	return -ENOSYS;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
joe perches
joe perches
244
63.05%
2
28.57%
marcin slusarz
marcin slusarz
133
34.37%
2
28.57%
pre-git
pre-git
6
1.55%
1
14.29%
samuel thibault
samuel thibault
2
0.52%
1
14.29%
linus torvalds
linus torvalds
2
0.52%
1
14.29%
Total
387
100.00%
7
100.00%


EXPORT_SYMBOL(cdrom_get_last_written);

EXPORT_SYMBOL(register_cdrom);

EXPORT_SYMBOL(unregister_cdrom);

EXPORT_SYMBOL(cdrom_open);

EXPORT_SYMBOL(cdrom_release);

EXPORT_SYMBOL(cdrom_ioctl);

EXPORT_SYMBOL(cdrom_media_changed);

EXPORT_SYMBOL(cdrom_number_of_slots);

EXPORT_SYMBOL(cdrom_mode_select);

EXPORT_SYMBOL(cdrom_mode_sense);

EXPORT_SYMBOL(init_cdrom_command);

EXPORT_SYMBOL(cdrom_get_media_event);

#ifdef CONFIG_SYSCTL


#define CDROM_STR_SIZE 1000


static struct cdrom_sysctl_settings {
	
char	info[CDROM_STR_SIZE];	/* general info */
	
int	autoclose;		/* close tray upon mount, etc */
	
int	autoeject;		/* eject on umount */
	
int	debug;			/* turn on debugging messages */
	
int	lock;			/* lock the door on device open */
	
int	check;			/* check media type */
} 
cdrom_sysctl_settings;


enum cdrom_print_option {
	
CTL_NAME,
	
CTL_SPEED,
	
CTL_SLOTS,
	
CTL_CAPABILITY
};



static int cdrom_print_info(const char *header, int val, char *info,
				int *pos, enum cdrom_print_option option)
{
	const int max_size = sizeof(cdrom_sysctl_settings.info);
	struct cdrom_device_info *cdi;
	int ret;

	ret = scnprintf(info + *pos, max_size - *pos, header);
	if (!ret)
		return 1;

	*pos += ret;

	list_for_each_entry(cdi, &cdrom_list, list) {
		switch (option) {
		case CTL_NAME:
			ret = scnprintf(info + *pos, max_size - *pos,
					"\t%s", cdi->name);
			break;
		case CTL_SPEED:
			ret = scnprintf(info + *pos, max_size - *pos,
					"\t%d", cdi->speed);
			break;
		case CTL_SLOTS:
			ret = scnprintf(info + *pos, max_size - *pos,
					"\t%d", cdi->capacity);
			break;
		case CTL_CAPABILITY:
			ret = scnprintf(info + *pos, max_size - *pos,
					"\t%d", CDROM_CAN(val) != 0);
			break;
		default:
			pr_info("invalid option%d\n", option);
			return 1;
		}
		if (!ret)
			return 1;
		*pos += ret;
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
dave young
dave young
118
53.39%
1
12.50%
pre-git
pre-git
91
41.18%
3
37.50%
akinobu mita
akinobu mita
8
3.62%
1
12.50%
joe perches
joe perches
2
0.90%
1
12.50%
linus torvalds
linus torvalds
1
0.45%
1
12.50%
adrian bunk
adrian bunk
1
0.45%
1
12.50%
Total
221
100.00%
8
100.00%



static int cdrom_sysctl_info(struct ctl_table *ctl, int write,
                           void __user *buffer, size_t *lenp, loff_t *ppos)
{
	int pos;
	char *info = cdrom_sysctl_settings.info;
	const int max_size = sizeof(cdrom_sysctl_settings.info);
	
	if (!*lenp || (*ppos && !write)) {
		*lenp = 0;
		return 0;
	}

	mutex_lock(&cdrom_mutex);

	pos = sprintf(info, "CD-ROM information, " VERSION "\n");
	
	if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
		goto done;
	if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
		goto done;
	if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
		goto done;
	if (cdrom_print_info("\nCan close tray:\t",
				CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan open tray:\t",
				CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan lock tray:\t",
				CDC_LOCK, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan change speed:",
				CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan select disk:",
				CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan read multisession:",
				CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan read MCN:\t",
				CDC_MCN, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nReports media changed:",
				CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan play audio:\t",
				CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan write CD-R:\t",
				CDC_CD_R, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan write CD-RW:",
				CDC_CD_RW, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan read DVD:\t",
				CDC_DVD, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan write DVD-R:",
				CDC_DVD_R, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan write DVD-RAM:",
				CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan read MRW:\t",
				CDC_MRW, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan write MRW:\t",
				CDC_MRW_W, info, &pos, CTL_CAPABILITY))
		goto done;
	if (cdrom_print_info("\nCan write RAM:\t",
				CDC_RAM, info, &pos, CTL_CAPABILITY))
		goto done;
	if (!scnprintf(info + pos, max_size - pos, "\n\n"))
		goto done;
doit:
	mutex_unlock(&cdrom_mutex);
	return proc_dostring(ctl, write, buffer, lenp, ppos);
done:
	pr_info("info buffer too small\n");
	goto doit;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
dave young
dave young
373
71.59%
1
9.09%
pre-git
pre-git
111
21.31%
5
45.45%
andrew morton
andrew morton
20
3.84%
1
9.09%
jens axboe
jens axboe
12
2.30%
1
9.09%
joe perches
joe perches
3
0.58%
2
18.18%
linus torvalds
linus torvalds
2
0.38%
1
9.09%
Total
521
100.00%
11
100.00%

/* Unfortunately, per device settings are not implemented through
   procfs/sysctl yet. When they are, this will naturally disappear. For now
   just update all drives. Later this will become the template on which
   new registered drives will be based. */


static void cdrom_update_settings(void)
{
	struct cdrom_device_info *cdi;

	mutex_lock(&cdrom_mutex);
	list_for_each_entry(cdi, &cdrom_list, list) {
		if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
			cdi->options |= CDO_AUTO_CLOSE;
		else if (!autoclose)
			cdi->options &= ~CDO_AUTO_CLOSE;
		if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
			cdi->options |= CDO_AUTO_EJECT;
		else if (!autoeject)
			cdi->options &= ~CDO_AUTO_EJECT;
		if (lockdoor && CDROM_CAN(CDC_LOCK))
			cdi->options |= CDO_LOCK;
		else if (!lockdoor)
			cdi->options &= ~CDO_LOCK;
		if (check_media_type)
			cdi->options |= CDO_CHECK_TYPE;
		else
			cdi->options &= ~CDO_CHECK_TYPE;
	}
	mutex_unlock(&cdrom_mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
116
84.67%
1
25.00%
akinobu mita
akinobu mita
20
14.60%
2
50.00%
adrian bunk
adrian bunk
1
0.73%
1
25.00%
Total
137
100.00%
4
100.00%



static int cdrom_sysctl_handler(struct ctl_table *ctl, int write,
				void __user *buffer, size_t *lenp, loff_t *ppos)
{
	int ret;
	
	ret = proc_dointvec(ctl, write, buffer, lenp, ppos);

	if (write) {
	
		/* we only care for 1 or 0. */
		autoclose        = !!cdrom_sysctl_settings.autoclose;
		autoeject        = !!cdrom_sysctl_settings.autoeject;
		debug	         = !!cdrom_sysctl_settings.debug;
		lockdoor         = !!cdrom_sysctl_settings.lock;
		check_media_type = !!cdrom_sysctl_settings.check;

		/* update the option flags according to the changes. we
                   don't have per device options through sysctl yet,
                   but we will have and then this will disappear. */
		cdrom_update_settings();
	}

        return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
81
81.82%
6
60.00%
eric w. biederman
eric w. biederman
10
10.10%
1
10.00%
linus torvalds
linus torvalds
6
6.06%
1
10.00%
al viro
al viro
1
1.01%
1
10.00%
joe perches
joe perches
1
1.01%
1
10.00%
Total
99
100.00%
10
100.00%

/* Place files in /proc/sys/dev/cdrom */

static struct ctl_table cdrom_table[] = {
	{
		.procname	= "info",
		.data		= &cdrom_sysctl_settings.info, 
		.maxlen		= CDROM_STR_SIZE,
		.mode		= 0444,
		.proc_handler	= cdrom_sysctl_info,
        },
	{
		.procname	= "autoclose",
		.data		= &cdrom_sysctl_settings.autoclose,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= cdrom_sysctl_handler,
        },
	{
		.procname	= "autoeject",
		.data		= &cdrom_sysctl_settings.autoeject,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= cdrom_sysctl_handler,
        },
	{
		.procname	= "debug",
		.data		= &cdrom_sysctl_settings.debug,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= cdrom_sysctl_handler,
        },
	{
		.procname	= "lock",
		.data		= &cdrom_sysctl_settings.lock,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= cdrom_sysctl_handler,
        },
	{
		.procname	= "check_media",
		.data		= &cdrom_sysctl_settings.check,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= cdrom_sysctl_handler
	},
	{ }
};


static struct ctl_table cdrom_cdrom_table[] = {
	{
		.procname	= "cdrom",
		.maxlen		= 0,
		.mode		= 0555,
		.child		= cdrom_table,
        },
	{ }
};

/* Make sure that /proc/sys/dev is there */

static struct ctl_table cdrom_root_table[] = {
	{
		.procname	= "dev",
		.maxlen		= 0,
		.mode		= 0555,
		.child		= cdrom_cdrom_table,
        },
	{ }
};

static struct ctl_table_header *cdrom_sysctl_header;



static void cdrom_sysctl_register(void)
{
	static int initialized;

	if (initialized == 1)
		return;

	cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);

	/* set the defaults */
	cdrom_sysctl_settings.autoclose = autoclose;
	cdrom_sysctl_settings.autoeject = autoeject;
	cdrom_sysctl_settings.debug = debug;
	cdrom_sysctl_settings.lock = lockdoor;
	cdrom_sysctl_settings.check = check_media_type;

	initialized = 1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
61
100.00%
3
100.00%
Total
61
100.00%
3
100.00%



static void cdrom_sysctl_unregister(void)
{
	if (cdrom_sysctl_header)
		unregister_sysctl_table(cdrom_sysctl_header);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
13
76.47%
2
66.67%
linus torvalds
linus torvalds
4
23.53%
1
33.33%
Total
17
100.00%
3
100.00%

#else /* CONFIG_SYSCTL */



static void cdrom_sysctl_register(void)
{
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
akinobu mita
akinobu mita
7
100.00%
1
100.00%
Total
7
100.00%
1
100.00%



static void cdrom_sysctl_unregister(void)
{
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
akinobu mita
akinobu mita
7
100.00%
1
100.00%
Total
7
100.00%
1
100.00%

#endif /* CONFIG_SYSCTL */



static int __init cdrom_init(void)
{
	cdrom_sysctl_register();

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
15
100.00%
4
100.00%
Total
15
100.00%
4
100.00%



static void __exit cdrom_exit(void)
{
	pr_info("Uniform CD-ROM driver unloaded\n");
	cdrom_sysctl_unregister();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
16
94.12%
4
80.00%
joe perches
joe perches
1
5.88%
1
20.00%
Total
17
100.00%
5
100.00%


module_init(cdrom_init);

module_exit(cdrom_exit);
MODULE_LICENSE("GPL");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
7714
44.83%
37
26.81%
joe perches
joe perches
3912
22.73%
11
7.97%
jens axboe
jens axboe
1447
8.41%
17
12.32%
andrew morton
andrew morton
820
4.77%
7
5.07%
christoph hellwig
christoph hellwig
788
4.58%
1
0.72%
marcin slusarz
marcin slusarz
584
3.39%
2
1.45%
dave young
dave young
505
2.93%
1
0.72%
peter osterlund
peter osterlund
410
2.38%
3
2.17%
fujita tomonori
fujita tomonori
220
1.28%
3
2.17%
tejun heo
tejun heo
156
0.91%
1
0.72%
art haas
art haas
121
0.70%
1
0.72%
andy polyakov
andy polyakov
104
0.60%
1
0.72%
linus torvalds
linus torvalds
74
0.43%
9
6.52%
al viro
al viro
68
0.40%
12
8.70%
akinobu mita
akinobu mita
50
0.29%
3
2.17%
alan d. brunelle
alan d. brunelle
33
0.19%
1
0.72%
rusty russell
rusty russell
30
0.17%
2
1.45%
samuel thibault
samuel thibault
24
0.14%
1
0.72%
dave jones
dave jones
22
0.13%
3
2.17%
thomas bogendoerfer
thomas bogendoerfer
19
0.11%
1
0.72%
jesper juhl
jesper juhl
16
0.09%
1
0.72%
stefan meyknecht
stefan meyknecht
14
0.08%
1
0.72%
eric w. biederman
eric w. biederman
13
0.08%
2
1.45%
adrian bunk
adrian bunk
12
0.07%
2
1.45%
paolo bonzini
paolo bonzini
10
0.06%
1
0.72%
stas sergeev
stas sergeev
7
0.04%
1
0.72%
joe lawrence
joe lawrence
7
0.04%
1
0.72%
martin k. petersen
martin k. petersen
6
0.03%
1
0.72%
georgios toptsidis
georgios toptsidis
4
0.02%
1
0.72%
alexey dobriyan
alexey dobriyan
3
0.02%
1
0.72%
thomas gleixner
thomas gleixner
3
0.02%
1
0.72%
borislav petkov
borislav petkov
2
0.01%
1
0.72%
lucas de marchi
lucas de marchi
2
0.01%
1
0.72%
james bottomley
james bottomley
2
0.01%
1
0.72%
simon arlott
simon arlott
2
0.01%
1
0.72%
pavel emelianov
pavel emelianov
1
0.01%
1
0.72%
dan carpenter
dan carpenter
1
0.01%
1
0.72%
edward falk
edward falk
1
0.01%
1
0.72%
stephen rothwell
stephen rothwell
1
0.01%
1
0.72%
Total
17208
100.00%
138
100.00%
  
Directory: drivers/cdrom

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.