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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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* -- <linux/cdrom.h>

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* General header file for linux CD-ROM drivers

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* 1994, 1995 Eberhard Mönkeberg, emoenke@gwdg.de

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* 1996 David van Leeuwen, david@tm.tno.nl

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* 1997, 1998 Erik Andersen, andersee@debian.org

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* 1998-2002 Jens Axboe, axboe@suse.de

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#ifndef _LINUX_CDROM_H

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#define _LINUX_CDROM_H

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#include <linux/types.h>

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#include <asm/byteorder.h>

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/*******************************************************

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* As of Linux 2.1.x, all Linux CD-ROM application programs will use this

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* (and only this) include file. It is my hope to provide Linux with

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* a uniform interface between software accessing CD-ROMs and the various

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* device drivers that actually talk to the drives. There may still be

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* 23 different kinds of strange CD-ROM drives, but at least there will

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* now be one, and only one, Linux CD-ROM interface.

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* Additionally, as of Linux 2.1.x, all Linux application programs

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* should use the O_NONBLOCK option when opening a CD-ROM device

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* for subsequent ioctl commands. This allows for neat system errors

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* like "No medium found" or "Wrong medium type" upon attempting to

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* mount or play an empty slot, mount an audio disc, or play a data disc.

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* Generally, changing an application program to support O_NONBLOCK

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* is as easy as the following:

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* - drive = open("/dev/cdrom", O_RDONLY);

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* + drive = open("/dev/cdrom", O_RDONLY | O_NONBLOCK);

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* It is worth the small change.

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* Patches for many common CD programs (provided by David A. van Leeuwen)

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* can be found at: ftp://ftp.gwdg.de/pub/linux/cdrom/drivers/cm206/

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*******************************************************/

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/* When a driver supports a certain function, but the cdrom drive we are

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* using doesn't, we will return the error EDRIVE_CANT_DO_THIS. We will

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* borrow the "Operation not supported" error from the network folks to

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* accomplish this. Maybe someday we will get a more targeted error code,

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* but this will do for now... */

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#define EDRIVE_CANT_DO_THIS EOPNOTSUPP

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/*******************************************************

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* The CD-ROM IOCTL commands -- these should be supported by

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* all the various cdrom drivers. For the CD-ROM ioctls, we

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* will commandeer byte 0x53, or 'S'.

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*******************************************************/

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#define CDROMPAUSE 0x5301 /* Pause Audio Operation */

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#define CDROMRESUME 0x5302 /* Resume paused Audio Operation */

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#define CDROMPLAYMSF 0x5303 /* Play Audio MSF (struct cdrom_msf) */

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#define CDROMPLAYTRKIND 0x5304 /* Play Audio Track/index

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(struct cdrom_ti) */

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#define CDROMREADTOCHDR 0x5305 /* Read TOC header

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(struct cdrom_tochdr) */

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#define CDROMREADTOCENTRY 0x5306 /* Read TOC entry

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(struct cdrom_tocentry) */

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#define CDROMSTOP 0x5307 /* Stop the cdrom drive */

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#define CDROMSTART 0x5308 /* Start the cdrom drive */

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#define CDROMEJECT 0x5309 /* Ejects the cdrom media */

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#define CDROMVOLCTRL 0x530a /* Control output volume

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(struct cdrom_volctrl) */

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#define CDROMSUBCHNL 0x530b /* Read subchannel data

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(struct cdrom_subchnl) */

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#define CDROMREADMODE2 0x530c /* Read CDROM mode 2 data (2336 Bytes)

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(struct cdrom_read) */

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#define CDROMREADMODE1 0x530d /* Read CDROM mode 1 data (2048 Bytes)

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(struct cdrom_read) */

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#define CDROMREADAUDIO 0x530e /* (struct cdrom_read_audio) */

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#define CDROMEJECT_SW 0x530f /* enable(1)/disable(0) auto-ejecting */

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#define CDROMMULTISESSION 0x5310 /* Obtain the start-of-last-session

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address of multi session disks

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(struct cdrom_multisession) */

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#define CDROM_GET_MCN 0x5311 /* Obtain the "Universal Product Code"

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if available (struct cdrom_mcn) */

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#define CDROM_GET_UPC CDROM_GET_MCN /* This one is deprecated,

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but here anyway for compatibility */

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#define CDROMRESET 0x5312 /* hard-reset the drive */

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#define CDROMVOLREAD 0x5313 /* Get the drive's volume setting

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(struct cdrom_volctrl) */

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#define CDROMREADRAW 0x5314 /* read data in raw mode (2352 Bytes)

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(struct cdrom_read) */

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* These ioctls are used only used in aztcd.c and optcd.c

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#define CDROMREADCOOKED 0x5315 /* read data in cooked mode */

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#define CDROMSEEK 0x5316 /* seek msf address */

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* This ioctl is only used by the scsi-cd driver.

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It is for playing audio in logical block addressing mode.

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#define CDROMPLAYBLK 0x5317 /* (struct cdrom_blk) */

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* These ioctls are only used in optcd.c

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#define CDROMREADALL 0x5318 /* read all 2646 bytes */

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* These ioctls are (now) only in ide-cd.c for controlling

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* drive spindown time. They should be implemented in the

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* Uniform driver, via generic packet commands, GPCMD_MODE_SELECT_10,

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* GPCMD_MODE_SENSE_10 and the GPMODE_POWER_PAGE...

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* -Erik

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#define CDROMGETSPINDOWN 0x531d

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#define CDROMSETSPINDOWN 0x531e

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* These ioctls are implemented through the uniform CD-ROM driver

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* They _will_ be adopted by all CD-ROM drivers, when all the CD-ROM

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* drivers are eventually ported to the uniform CD-ROM driver interface.

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#define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */

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#define CDROM_SET_OPTIONS 0x5320 /* Set behavior options */

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#define CDROM_CLEAR_OPTIONS 0x5321 /* Clear behavior options */

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#define CDROM_SELECT_SPEED 0x5322 /* Set the CD-ROM speed */

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#define CDROM_SELECT_DISC 0x5323 /* Select disc (for juke-boxes) */

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#define CDROM_MEDIA_CHANGED 0x5325 /* Check is media changed */

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#define CDROM_DRIVE_STATUS 0x5326 /* Get tray position, etc. */

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#define CDROM_DISC_STATUS 0x5327 /* Get disc type, etc. */

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#define CDROM_CHANGER_NSLOTS 0x5328 /* Get number of slots */

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#define CDROM_LOCKDOOR 0x5329 /* lock or unlock door */

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#define CDROM_DEBUG 0x5330 /* Turn debug messages on/off */

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#define CDROM_GET_CAPABILITY 0x5331 /* get capabilities */

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/* Note that scsi/scsi_ioctl.h also uses 0x5382 - 0x5386.

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* Future CDROM ioctls should be kept below 0x537F

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/* This ioctl is only used by sbpcd at the moment */

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#define CDROMAUDIOBUFSIZ 0x5382 /* set the audio buffer size */

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/* conflict with SCSI_IOCTL_GET_IDLUN */

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/* DVD-ROM Specific ioctls */

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#define DVD_READ_STRUCT 0x5390 /* Read structure */

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#define DVD_WRITE_STRUCT 0x5391 /* Write structure */

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#define DVD_AUTH 0x5392 /* Authentication */

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#define CDROM_SEND_PACKET 0x5393 /* send a packet to the drive */

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#define CDROM_NEXT_WRITABLE 0x5394 /* get next writable block */

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#define CDROM_LAST_WRITTEN 0x5395 /* get last block written on disc */

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/*******************************************************

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* CDROM IOCTL structures

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*******************************************************/

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/* Address in MSF format */

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struct cdrom_msf0

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{

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__u8 minute;

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__u8 second;

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__u8 frame;

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};

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/* Address in either MSF or logical format */

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union cdrom_addr

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{

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struct cdrom_msf0 msf;

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int lba;

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};

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/* This struct is used by the CDROMPLAYMSF ioctl */

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struct cdrom_msf

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{

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__u8 cdmsf_min0; /* start minute */

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__u8 cdmsf_sec0; /* start second */

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__u8 cdmsf_frame0; /* start frame */

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__u8 cdmsf_min1; /* end minute */

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__u8 cdmsf_sec1; /* end second */

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__u8 cdmsf_frame1; /* end frame */

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};

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/* This struct is used by the CDROMPLAYTRKIND ioctl */

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struct cdrom_ti

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{

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__u8 cdti_trk0; /* start track */

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__u8 cdti_ind0; /* start index */

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__u8 cdti_trk1; /* end track */

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__u8 cdti_ind1; /* end index */

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};

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/* This struct is used by the CDROMREADTOCHDR ioctl */

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struct cdrom_tochdr

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{

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__u8 cdth_trk0; /* start track */

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__u8 cdth_trk1; /* end track */

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};

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/* This struct is used by the CDROMVOLCTRL and CDROMVOLREAD ioctls */

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struct cdrom_volctrl

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{

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__u8 channel0;

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__u8 channel1;

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__u8 channel2;

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__u8 channel3;

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};

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/* This struct is used by the CDROMSUBCHNL ioctl */

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struct cdrom_subchnl

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{

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__u8 cdsc_format;

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__u8 cdsc_audiostatus;

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__u8 cdsc_adr: 4;

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__u8 cdsc_ctrl: 4;

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__u8 cdsc_trk;

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__u8 cdsc_ind;

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union cdrom_addr cdsc_absaddr;

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union cdrom_addr cdsc_reladdr;

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};

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/* This struct is used by the CDROMREADTOCENTRY ioctl */

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struct cdrom_tocentry

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{

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__u8 cdte_track;

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__u8 cdte_adr :4;

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__u8 cdte_ctrl :4;

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__u8 cdte_format;

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union cdrom_addr cdte_addr;

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__u8 cdte_datamode;

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};

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/* This struct is used by the CDROMREADMODE1, and CDROMREADMODE2 ioctls */

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struct cdrom_read

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{

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int cdread_lba;

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char *cdread_bufaddr;

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int cdread_buflen;

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};

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/* This struct is used by the CDROMREADAUDIO ioctl */

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struct cdrom_read_audio

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{

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union cdrom_addr addr; /* frame address */

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__u8 addr_format; /* CDROM_LBA or CDROM_MSF */

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int nframes; /* number of 2352-byte-frames to read at once */

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__u8 *buf; /* frame buffer (size: nframes*2352 bytes) */

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};

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/* This struct is used with the CDROMMULTISESSION ioctl */

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struct cdrom_multisession

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{

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union cdrom_addr addr; /* frame address: start-of-last-session

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(not the new "frame 16"!). Only valid

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if the "xa_flag" is true. */

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__u8 xa_flag; /* 1: "is XA disk" */

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__u8 addr_format; /* CDROM_LBA or CDROM_MSF */

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};

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/* This struct is used with the CDROM_GET_MCN ioctl.

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* Very few audio discs actually have Universal Product Code information,

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* which should just be the Medium Catalog Number on the box. Also note

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* that the way the codeis written on CD is _not_ uniform across all discs!

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struct cdrom_mcn

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{

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__u8 medium_catalog_number[14]; /* 13 ASCII digits, null-terminated */

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};

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/* This is used by the CDROMPLAYBLK ioctl */

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struct cdrom_blk

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{

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unsigned from;

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unsigned short len;

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};

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#define CDROM_PACKET_SIZE 12

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#define CGC_DATA_UNKNOWN 0

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#define CGC_DATA_WRITE 1

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#define CGC_DATA_READ 2

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#define CGC_DATA_NONE 3

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/* for CDROM_PACKET_COMMAND ioctl */

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struct cdrom_generic_command

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{

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unsigned char cmd[CDROM_PACKET_SIZE];

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unsigned char *buffer;

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unsigned int buflen;

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int stat;

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struct request_sense *sense;

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unsigned char data_direction;

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int quiet;

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int timeout;

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void *reserved[1]; /* unused, actually */

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};

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* A CD-ROM physical sector size is 2048, 2052, 2056, 2324, 2332, 2336,

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* 2340, or 2352 bytes long.

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* Sector types of the standard CD-ROM data formats:

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* format sector type user data size (bytes)

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* -----------------------------------------------------------------------------

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* 1 (Red Book) CD-DA 2352 (CD_FRAMESIZE_RAW)

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* 2 (Yellow Book) Mode1 Form1 2048 (CD_FRAMESIZE)

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* 3 (Yellow Book) Mode1 Form2 2336 (CD_FRAMESIZE_RAW0)

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* 4 (Green Book) Mode2 Form1 2048 (CD_FRAMESIZE)

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* 5 (Green Book) Mode2 Form2 2328 (2324+4 spare bytes)

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* The layout of the standard CD-ROM data formats:

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* -----------------------------------------------------------------------------

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* - audio (red): | audio_sample_bytes |

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* | 2352 |

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* - data (yellow, mode1): | sync - head - data - EDC - zero - ECC |

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* | 12 - 4 - 2048 - 4 - 8 - 276 |

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* - data (yellow, mode2): | sync - head - data |

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* | 12 - 4 - 2336 |

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* - XA data (green, mode2 form1): | sync - head - sub - data - EDC - ECC |

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* | 12 - 4 - 8 - 2048 - 4 - 276 |

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* - XA data (green, mode2 form2): | sync - head - sub - data - Spare |

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* | 12 - 4 - 8 - 2324 - 4 |

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/* Some generally useful CD-ROM information -- mostly based on the above */

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#define CD_MINS 74 /* max. minutes per CD, not really a limit */

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#define CD_SECS 60 /* seconds per minute */

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#define CD_FRAMES 75 /* frames per second */

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#define CD_SYNC_SIZE 12 /* 12 sync bytes per raw data frame */

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#define CD_MSF_OFFSET 150 /* MSF numbering offset of first frame */

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#define CD_CHUNK_SIZE 24 /* lowest-level "data bytes piece" */

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#define CD_NUM_OF_CHUNKS 98 /* chunks per frame */

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#define CD_FRAMESIZE_SUB 96 /* subchannel data "frame" size */

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#define CD_HEAD_SIZE 4 /* header (address) bytes per raw data frame */

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#define CD_SUBHEAD_SIZE 8 /* subheader bytes per raw XA data frame */

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#define CD_EDC_SIZE 4 /* bytes EDC per most raw data frame types */

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#define CD_ZERO_SIZE 8 /* bytes zero per yellow book mode 1 frame */

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#define CD_ECC_SIZE 276 /* bytes ECC per most raw data frame types */

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#define CD_FRAMESIZE 2048 /* bytes per frame, "cooked" mode */

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#define CD_FRAMESIZE_RAW 2352 /* bytes per frame, "raw" mode */

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#define CD_FRAMESIZE_RAWER 2646 /* The maximum possible returned bytes */

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/* most drives don't deliver everything: */

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#define CD_FRAMESIZE_RAW1 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE) /*2340*/

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#define CD_FRAMESIZE_RAW0 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE-CD_HEAD_SIZE) /*2336*/

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#define CD_XA_HEAD (CD_HEAD_SIZE+CD_SUBHEAD_SIZE) /* "before data" part of raw XA frame */

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#define CD_XA_TAIL (CD_EDC_SIZE+CD_ECC_SIZE) /* "after data" part of raw XA frame */

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#define CD_XA_SYNC_HEAD (CD_SYNC_SIZE+CD_XA_HEAD) /* sync bytes + header of XA frame */

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/* CD-ROM address types (cdrom_tocentry.cdte_format) */

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#define CDROM_LBA 0x01 /* "logical block": first frame is #0 */

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#define CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */

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/* bit to tell whether track is data or audio (cdrom_tocentry.cdte_ctrl) */

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#define CDROM_DATA_TRACK 0x04

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/* The leadout track is always 0xAA, regardless of # of tracks on disc */

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#define CDROM_LEADOUT 0xAA

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/* audio states (from SCSI-2, but seen with other drives, too) */

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#define CDROM_AUDIO_INVALID 0x00 /* audio status not supported */

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#define CDROM_AUDIO_PLAY 0x11 /* audio play operation in progress */

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#define CDROM_AUDIO_PAUSED 0x12 /* audio play operation paused */

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#define CDROM_AUDIO_COMPLETED 0x13 /* audio play successfully completed */

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#define CDROM_AUDIO_ERROR 0x14 /* audio play stopped due to error */

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#define CDROM_AUDIO_NO_STATUS 0x15 /* no current audio status to return */

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/* capability flags used with the uniform CD-ROM driver */

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#define CDC_CLOSE_TRAY 0x1 /* caddy systems _can't_ close */

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#define CDC_OPEN_TRAY 0x2 /* but _can_ eject. */

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#define CDC_LOCK 0x4 /* disable manual eject */

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#define CDC_SELECT_SPEED 0x8 /* programmable speed */

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#define CDC_SELECT_DISC 0x10 /* select disc from juke-box */

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#define CDC_MULTI_SESSION 0x20 /* read sessions>1 */

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#define CDC_MCN 0x40 /* Medium Catalog Number */

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#define CDC_MEDIA_CHANGED 0x80 /* media changed */

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#define CDC_PLAY_AUDIO 0x100 /* audio functions */

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#define CDC_RESET 0x200 /* hard reset device */

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#define CDC_DRIVE_STATUS 0x800 /* driver implements drive status */

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#define CDC_GENERIC_PACKET 0x1000 /* driver implements generic packets */

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#define CDC_CD_R 0x2000 /* drive is a CD-R */

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#define CDC_CD_RW 0x4000 /* drive is a CD-RW */

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#define CDC_DVD 0x8000 /* drive is a DVD */

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#define CDC_DVD_R 0x10000 /* drive can write DVD-R */

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#define CDC_DVD_RAM 0x20000 /* drive can write DVD-RAM */

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#define CDC_MO_DRIVE 0x40000 /* drive is an MO device */

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#define CDC_MRW 0x80000 /* drive can read MRW */

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#define CDC_MRW_W 0x100000 /* drive can write MRW */

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#define CDC_RAM 0x200000 /* ok to open for WRITE */

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/* drive status possibilities returned by CDROM_DRIVE_STATUS ioctl */

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#define CDS_NO_INFO 0 /* if not implemented */

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#define CDS_NO_DISC 1

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#define CDS_TRAY_OPEN 2

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#define CDS_DRIVE_NOT_READY 3

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#define CDS_DISC_OK 4

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/* return values for the CDROM_DISC_STATUS ioctl */

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/* can also return CDS_NO_[INFO|DISC], from above */

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#define CDS_AUDIO 100

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#define CDS_DATA_1 101

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#define CDS_DATA_2 102

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#define CDS_XA_2_1 103

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#define CDS_XA_2_2 104

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#define CDS_MIXED 105

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/* User-configurable behavior options for the uniform CD-ROM driver */

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#define CDO_AUTO_CLOSE 0x1 /* close tray on first open() */

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#define CDO_AUTO_EJECT 0x2 /* open tray on last release() */

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#define CDO_USE_FFLAGS 0x4 /* use O_NONBLOCK information on open */

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#define CDO_LOCK 0x8 /* lock tray on open files */

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#define CDO_CHECK_TYPE 0x10 /* check type on open for data */

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/* Special codes used when specifying changer slots. */

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#define CDSL_NONE (INT_MAX-1)

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#define CDSL_CURRENT INT_MAX

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/* For partition based multisession access. IDE can handle 64 partitions

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* per drive - SCSI CD-ROM's use minors to differentiate between the

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* various drives, so we can't do multisessions the same way there.

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* Use the -o session=x option to mount on them.

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#define CD_PART_MAX 64

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#define CD_PART_MASK (CD_PART_MAX - 1)

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/*********************************************************************

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* Generic Packet commands, MMC commands, and such

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*********************************************************************/

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/* The generic packet command opcodes for CD/DVD Logical Units,

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* From Table 57 of the SFF8090 Ver. 3 (Mt. Fuji) draft standard. */

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#define GPCMD_BLANK 0xa1

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#define GPCMD_CLOSE_TRACK 0x5b

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#define GPCMD_FLUSH_CACHE 0x35

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#define GPCMD_FORMAT_UNIT 0x04

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#define GPCMD_GET_CONFIGURATION 0x46

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#define GPCMD_GET_EVENT_STATUS_NOTIFICATION 0x4a

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#define GPCMD_GET_PERFORMANCE 0xac

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#define GPCMD_INQUIRY 0x12

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#define GPCMD_LOAD_UNLOAD 0xa6

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#define GPCMD_MECHANISM_STATUS 0xbd

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#define GPCMD_MODE_SELECT_10 0x55

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#define GPCMD_MODE_SENSE_10 0x5a

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#define GPCMD_PAUSE_RESUME 0x4b

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#define GPCMD_PLAY_AUDIO_10 0x45

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#define GPCMD_PLAY_AUDIO_MSF 0x47

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#define GPCMD_PLAY_AUDIO_TI 0x48

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#define GPCMD_PLAY_CD 0xbc

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#define GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1e

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#define GPCMD_READ_10 0x28

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#define GPCMD_READ_12 0xa8

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#define GPCMD_READ_BUFFER 0x3c

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#define GPCMD_READ_BUFFER_CAPACITY 0x5c

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#define GPCMD_READ_CDVD_CAPACITY 0x25

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#define GPCMD_READ_CD 0xbe

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#define GPCMD_READ_CD_MSF 0xb9

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#define GPCMD_READ_DISC_INFO 0x51

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#define GPCMD_READ_DVD_STRUCTURE 0xad

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#define GPCMD_READ_FORMAT_CAPACITIES 0x23

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#define GPCMD_READ_HEADER 0x44

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#define GPCMD_READ_TRACK_RZONE_INFO 0x52

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#define GPCMD_READ_SUBCHANNEL 0x42

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#define GPCMD_READ_TOC_PMA_ATIP 0x43

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#define GPCMD_REPAIR_RZONE_TRACK 0x58

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#define GPCMD_REPORT_KEY 0xa4

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#define GPCMD_REQUEST_SENSE 0x03

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#define GPCMD_RESERVE_RZONE_TRACK 0x53

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#define GPCMD_SEND_CUE_SHEET 0x5d

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#define GPCMD_SCAN 0xba

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#define GPCMD_SEEK 0x2b

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#define GPCMD_SEND_DVD_STRUCTURE 0xbf

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#define GPCMD_SEND_EVENT 0xa2

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#define GPCMD_SEND_KEY 0xa3

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#define GPCMD_SEND_OPC 0x54

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#define GPCMD_SET_READ_AHEAD 0xa7

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#define GPCMD_SET_STREAMING 0xb6

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#define GPCMD_START_STOP_UNIT 0x1b

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#define GPCMD_STOP_PLAY_SCAN 0x4e

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#define GPCMD_TEST_UNIT_READY 0x00

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#define GPCMD_VERIFY_10 0x2f

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#define GPCMD_WRITE_10 0x2a

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#define GPCMD_WRITE_12 0xaa

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#define GPCMD_WRITE_AND_VERIFY_10 0x2e

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#define GPCMD_WRITE_BUFFER 0x3b

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/* This is listed as optional in ATAPI 2.6, but is (curiously)

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* missing from Mt. Fuji, Table 57. It _is_ mentioned in Mt. Fuji

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* Table 377 as an MMC command for SCSi devices though... Most ATAPI

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* drives support it. */

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#define GPCMD_SET_SPEED 0xbb

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/* This seems to be a SCSI specific CD-ROM opcode

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* to play data at track/index */

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#define GPCMD_PLAYAUDIO_TI 0x48

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* From MS Media Status Notification Support Specification. For

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* older drives only.

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[499] Fix | Delete