Uwe Zeisberger | f30c226 | 2006-10-03 23:01:26 +0200 | [diff] [blame] | 1 | /* linux/drivers/cdrom/cdrom.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | Copyright (c) 1996, 1997 David A. van Leeuwen. |
| 3 | Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org> |
| 4 | Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk> |
| 5 | |
| 6 | May be copied or modified under the terms of the GNU General Public |
| 7 | License. See linux/COPYING for more information. |
| 8 | |
| 9 | Uniform CD-ROM driver for Linux. |
| 10 | See Documentation/cdrom/cdrom-standard.tex for usage information. |
| 11 | |
| 12 | The routines in the file provide a uniform interface between the |
| 13 | software that uses CD-ROMs and the various low-level drivers that |
| 14 | actually talk to the hardware. Suggestions are welcome. |
| 15 | Patches that work are more welcome though. ;-) |
| 16 | |
| 17 | To Do List: |
| 18 | ---------------------------------- |
| 19 | |
| 20 | -- Modify sysctl/proc interface. I plan on having one directory per |
| 21 | drive, with entries for outputing general drive information, and sysctl |
| 22 | based tunable parameters such as whether the tray should auto-close for |
| 23 | that drive. Suggestions (or patches) for this welcome! |
| 24 | |
| 25 | |
| 26 | Revision History |
| 27 | ---------------------------------- |
| 28 | 1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl> |
| 29 | -- Initial version by David A. van Leeuwen. I don't have a detailed |
| 30 | changelog for the 1.x series, David? |
| 31 | |
| 32 | 2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org> |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 33 | -- New maintainer! As David A. van Leeuwen has been too busy to actively |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | maintain and improve this driver, I am now carrying on the torch. If |
| 35 | you have a problem with this driver, please feel free to contact me. |
| 36 | |
| 37 | -- Added (rudimentary) sysctl interface. I realize this is really weak |
| 38 | right now, and is _very_ badly implemented. It will be improved... |
| 39 | |
| 40 | -- Modified CDROM_DISC_STATUS so that it is now incorporated into |
| 41 | the Uniform CD-ROM driver via the cdrom_count_tracks function. |
| 42 | The cdrom_count_tracks function helps resolve some of the false |
| 43 | assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check |
| 44 | for the correct media type when mounting or playing audio from a CD. |
| 45 | |
| 46 | -- Remove the calls to verify_area and only use the copy_from_user and |
| 47 | copy_to_user stuff, since these calls now provide their own memory |
| 48 | checking with the 2.1.x kernels. |
| 49 | |
| 50 | -- Major update to return codes so that errors from low-level drivers |
| 51 | are passed on through (thanks to Gerd Knorr for pointing out this |
| 52 | problem). |
| 53 | |
| 54 | -- Made it so if a function isn't implemented in a low-level driver, |
| 55 | ENOSYS is now returned instead of EINVAL. |
| 56 | |
| 57 | -- Simplified some complex logic so that the source code is easier to read. |
| 58 | |
| 59 | -- Other stuff I probably forgot to mention (lots of changes). |
| 60 | |
| 61 | 2.01 to 2.11 Dec 1997-Jan 1998 |
| 62 | -- TO-DO! Write changelogs for 2.01 to 2.12. |
| 63 | |
| 64 | 2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org> |
| 65 | -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that |
| 66 | copy_*_user does not return EFAULT on error, but instead returns the number |
| 67 | of bytes not copied. I was returning whatever non-zero stuff came back from |
| 68 | the copy_*_user functions directly, which would result in strange errors. |
| 69 | |
| 70 | 2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org> |
| 71 | -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed |
| 72 | of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing |
| 73 | this out and providing a simple fix. |
| 74 | -- Fixed the procfs-unload-module bug with the fill_inode procfs callback. |
| 75 | thanks to Andrea Arcangeli |
| 76 | -- Fixed it so that the /proc entry now also shows up when cdrom is |
| 77 | compiled into the kernel. Before it only worked when loaded as a module. |
| 78 | |
| 79 | 2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org> |
| 80 | -- Fixed a bug in cdrom_media_changed and handling of reporting that |
| 81 | the media had changed for devices that _don't_ implement media_changed. |
| 82 | Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug. |
| 83 | -- Made a few things more pedanticly correct. |
| 84 | |
| 85 | 2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk> |
| 86 | -- New maintainers! Erik was too busy to continue the work on the driver, |
| 87 | so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk> |
| 88 | will do their best to follow in his footsteps |
| 89 | |
| 90 | 2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk> |
| 91 | -- Check if drive is capable of doing what we ask before blindly changing |
| 92 | cdi->options in various ioctl. |
| 93 | -- Added version to proc entry. |
| 94 | |
| 95 | 2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk> |
| 96 | -- Fixed an error in open_for_data where we would sometimes not return |
| 97 | the correct error value. Thanks Huba Gaspar <huba@softcell.hu>. |
| 98 | -- Fixed module usage count - usage was based on /proc/sys/dev |
| 99 | instead of /proc/sys/dev/cdrom. This could lead to an oops when other |
| 100 | modules had entries in dev. Feb 02 - real bug was in sysctl.c where |
| 101 | dev would be removed even though it was used. cdrom.c just illuminated |
| 102 | that bug. |
| 103 | |
| 104 | 2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk> |
| 105 | -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has |
| 106 | been "rewritten" because capabilities and options aren't in sync. They |
| 107 | should be... |
| 108 | -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way. |
| 109 | -- Added CDROM_RESET ioctl. |
| 110 | -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly. |
| 111 | -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs |
| 112 | from parsing /proc/sys/dev/cdrom/info. |
| 113 | |
| 114 | 2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk> |
| 115 | -- Check capability mask from low level driver when counting tracks as |
| 116 | per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>. |
| 117 | |
| 118 | 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk> |
| 119 | -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of |
| 120 | CDC_CLOSE_TRAY. |
| 121 | -- proc info didn't mask against capabilities mask. |
| 122 | |
| 123 | 3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk> |
| 124 | -- Unified audio ioctl handling across CD-ROM drivers. A lot of the |
| 125 | code was duplicated before. Drives that support the generic packet |
| 126 | interface are now being fed packets from here instead. |
| 127 | -- First attempt at adding support for MMC2 commands - for DVD and |
| 128 | CD-R(W) drives. Only the DVD parts are in now - the interface used is |
| 129 | the same as for the audio ioctls. |
| 130 | -- ioctl cleanups. if a drive couldn't play audio, it didn't get |
| 131 | a change to perform device specific ioctls as well. |
| 132 | -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities. |
| 133 | -- Put in sysctl files for autoclose, autoeject, check_media, debug, |
| 134 | and lock. |
| 135 | -- /proc/sys/dev/cdrom/info has been updated to also contain info about |
| 136 | CD-Rx and DVD capabilities. |
| 137 | -- Now default to checking media type. |
| 138 | -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for |
| 139 | doing this anyway, with the generic_packet addition. |
| 140 | |
| 141 | 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk> |
| 142 | -- Fix up the sysctl handling so that the option flags get set |
| 143 | correctly. |
| 144 | -- Fix up ioctl handling so the device specific ones actually get |
| 145 | called :). |
| 146 | |
| 147 | 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk> |
| 148 | -- Fixed volume control on SCSI drives (or others with longer audio |
| 149 | page). |
| 150 | -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath |
| 151 | <andrewtv@usa.net> for telling me and for having defined the various |
| 152 | DVD structures and ioctls in the first place! He designed the original |
| 153 | DVD patches for ide-cd and while I rearranged and unified them, the |
| 154 | interface is still the same. |
| 155 | |
| 156 | 3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk> |
| 157 | -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only |
| 158 | CDROMREADTOCENTRY and CDROMREADTOCHDR are left. |
| 159 | -- Moved the CDROMREADxxx ioctls in here. |
| 160 | -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls |
| 161 | and exported functions. |
| 162 | -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands |
| 163 | to now read GPCMD_ for the new generic packet interface. All low level |
| 164 | drivers are updated as well. |
| 165 | -- Various other cleanups. |
| 166 | |
| 167 | 3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk> |
| 168 | -- Fixed a couple of possible memory leaks (if an operation failed and |
| 169 | we didn't free the buffer before returning the error). |
| 170 | -- Integrated Uniform CD Changer handling from Richard Sharman |
| 171 | <rsharman@pobox.com>. |
| 172 | -- Defined CD_DVD and CD_CHANGER log levels. |
| 173 | -- Fixed the CDROMREADxxx ioctls. |
| 174 | -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few |
| 175 | drives supported it. We lose the index part, however. |
| 176 | -- Small modifications to accommodate opens of /dev/hdc1, required |
| 177 | for ide-cd to handle multisession discs. |
| 178 | -- Export cdrom_mode_sense and cdrom_mode_select. |
| 179 | -- init_cdrom_command() for setting up a cgc command. |
| 180 | |
| 181 | 3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk> |
| 182 | -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually |
| 183 | impossible to send the drive data in a sensible way. |
| 184 | -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and |
| 185 | dvd_read_manufact. |
| 186 | -- Added setup of write mode for packet writing. |
| 187 | -- Fixed CDDA ripping with cdda2wav - accept much larger requests of |
| 188 | number of frames and split the reads in blocks of 8. |
| 189 | |
| 190 | 3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk> |
| 191 | -- Added support for changing the region of DVD drives. |
| 192 | -- Added sense data to generic command. |
| 193 | |
| 194 | 3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de> |
| 195 | -- Do same "read header length" trick in cdrom_get_disc_info() as |
| 196 | we do in cdrom_get_track_info() -- some drive don't obey specs and |
| 197 | fail if they can't supply the full Mt Fuji size table. |
| 198 | -- Deleted stuff related to setting up write modes. It has a different |
| 199 | home now. |
| 200 | -- Clear header length in mode_select unconditionally. |
| 201 | -- Removed the register_disk() that was added, not needed here. |
| 202 | |
| 203 | 3.08 May 1, 2000 - Jens Axboe <axboe@suse.de> |
| 204 | -- Fix direction flag in setup_send_key and setup_report_key. This |
| 205 | gave some SCSI adapters problems. |
| 206 | -- Always return -EROFS for write opens |
| 207 | -- Convert to module_init/module_exit style init and remove some |
| 208 | of the #ifdef MODULE stuff |
| 209 | -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid, |
| 210 | DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and |
| 211 | dvd_do_auth passed uninitialized data to drive because init_cdrom_command |
| 212 | did not clear a 0 sized buffer. |
| 213 | |
| 214 | 3.09 May 12, 2000 - Jens Axboe <axboe@suse.de> |
| 215 | -- Fix Video-CD on SCSI drives that don't support READ_CD command. In |
| 216 | that case switch block size and issue plain READ_10 again, then switch |
| 217 | back. |
| 218 | |
| 219 | 3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de> |
| 220 | -- Fix volume control on CD's - old SCSI-II drives now use their own |
| 221 | code, as doing MODE6 stuff in here is really not my intention. |
| 222 | -- Use READ_DISC_INFO for more reliable end-of-disc. |
| 223 | |
| 224 | 3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de> |
| 225 | -- Fix bug in getting rpc phase 2 region info. |
| 226 | -- Reinstate "correct" CDROMPLAYTRKIND |
| 227 | |
| 228 | 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de> |
| 229 | -- Use quiet bit on packet commands not known to work |
| 230 | |
| 231 | 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de> |
| 232 | -- Various fixes and lots of cleanups not listed :-) |
| 233 | -- Locking fixes |
| 234 | -- Mt Rainier support |
| 235 | -- DVD-RAM write open fixes |
| 236 | |
| 237 | Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov |
| 238 | <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units. |
| 239 | |
| 240 | Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW |
| 241 | 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se> |
| 242 | |
| 243 | -------------------------------------------------------------------------*/ |
| 244 | |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 245 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | #define REVISION "Revision: 3.20" |
| 248 | #define VERSION "Id: cdrom.c 3.20 2003/12/17" |
| 249 | |
| 250 | /* I use an error-log mask to give fine grain control over the type of |
| 251 | messages dumped to the system logs. The available masks include: */ |
| 252 | #define CD_NOTHING 0x0 |
| 253 | #define CD_WARNING 0x1 |
| 254 | #define CD_REG_UNREG 0x2 |
| 255 | #define CD_DO_IOCTL 0x4 |
| 256 | #define CD_OPEN 0x8 |
| 257 | #define CD_CLOSE 0x10 |
| 258 | #define CD_COUNT_TRACKS 0x20 |
| 259 | #define CD_CHANGER 0x40 |
| 260 | #define CD_DVD 0x80 |
| 261 | |
| 262 | /* Define this to remove _all_ the debugging messages */ |
| 263 | /* #define ERRLOGMASK CD_NOTHING */ |
| 264 | #define ERRLOGMASK CD_WARNING |
| 265 | /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */ |
| 266 | /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */ |
| 267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | #include <linux/module.h> |
| 269 | #include <linux/fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | #include <linux/major.h> |
| 271 | #include <linux/types.h> |
| 272 | #include <linux/errno.h> |
| 273 | #include <linux/kernel.h> |
| 274 | #include <linux/mm.h> |
| 275 | #include <linux/slab.h> |
| 276 | #include <linux/cdrom.h> |
| 277 | #include <linux/sysctl.h> |
| 278 | #include <linux/proc_fs.h> |
| 279 | #include <linux/blkpg.h> |
| 280 | #include <linux/init.h> |
| 281 | #include <linux/fcntl.h> |
| 282 | #include <linux/blkdev.h> |
| 283 | #include <linux/times.h> |
Linus Torvalds | 7c0f6ba | 2016-12-24 11:46:01 -0800 | [diff] [blame] | 284 | #include <linux/uaccess.h> |
Christoph Hellwig | 82ed4db | 2017-01-27 09:46:29 +0100 | [diff] [blame] | 285 | #include <scsi/scsi_request.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
| 287 | /* used to tell the module to turn on full debugging messages */ |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 288 | static bool debug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | /* default compatibility mode */ |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 290 | static bool autoclose=1; |
| 291 | static bool autoeject; |
| 292 | static bool lockdoor = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | /* will we ever get to use this... sigh. */ |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 294 | static bool check_media_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | /* automatically restart mrw format */ |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 296 | static bool mrw_format_restart = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | module_param(debug, bool, 0); |
| 298 | module_param(autoclose, bool, 0); |
| 299 | module_param(autoeject, bool, 0); |
| 300 | module_param(lockdoor, bool, 0); |
| 301 | module_param(check_media_type, bool, 0); |
| 302 | module_param(mrw_format_restart, bool, 0); |
| 303 | |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 304 | static DEFINE_MUTEX(cdrom_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
| 306 | static const char *mrw_format_status[] = { |
| 307 | "not mrw", |
| 308 | "bgformat inactive", |
| 309 | "bgformat active", |
| 310 | "mrw complete", |
| 311 | }; |
| 312 | |
| 313 | static const char *mrw_address_space[] = { "DMA", "GAA" }; |
| 314 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 315 | #if (ERRLOGMASK != CD_NOTHING) |
| 316 | #define cd_dbg(type, fmt, ...) \ |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 317 | do { \ |
| 318 | if ((ERRLOGMASK & type) || debug == 1) \ |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 319 | pr_debug(fmt, ##__VA_ARGS__); \ |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 320 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | #else |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 322 | #define cd_dbg(type, fmt, ...) \ |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 323 | do { \ |
| 324 | if (0 && (ERRLOGMASK & type) || debug == 1) \ |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 325 | pr_debug(fmt, ##__VA_ARGS__); \ |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 326 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | #endif |
| 328 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in |
| 330 | a lot of places. This macro makes the code more clear. */ |
| 331 | #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) |
| 332 | |
Jens Axboe | 2e11c20 | 2007-01-03 08:10:35 +0100 | [diff] [blame] | 333 | /* |
| 334 | * Another popular OS uses 7 seconds as the hard timeout for default |
| 335 | * commands, so it is a good choice for us as well. |
| 336 | */ |
| 337 | #define CDROM_DEF_TIMEOUT (7 * HZ) |
| 338 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | /* Not-exported routines. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | static void cdrom_sysctl_register(void); |
Akinobu Mita | 17672cf | 2008-03-26 12:08:59 +0100 | [diff] [blame] | 342 | |
Akinobu Mita | 7fd097d | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 343 | static LIST_HEAD(cdrom_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 345 | int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, |
| 346 | struct packet_command *cgc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | { |
| 348 | if (cgc->sense) { |
| 349 | cgc->sense->sense_key = 0x05; |
| 350 | cgc->sense->asc = 0x20; |
| 351 | cgc->sense->ascq = 0x00; |
| 352 | } |
| 353 | |
| 354 | cgc->stat = -EIO; |
| 355 | return -EIO; |
| 356 | } |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 357 | EXPORT_SYMBOL(cdrom_dummy_generic_packet); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 359 | static int cdrom_flush_cache(struct cdrom_device_info *cdi) |
| 360 | { |
| 361 | struct packet_command cgc; |
| 362 | |
| 363 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 364 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; |
| 365 | |
| 366 | cgc.timeout = 5 * 60 * HZ; |
| 367 | |
| 368 | return cdi->ops->generic_packet(cdi, &cgc); |
| 369 | } |
| 370 | |
Joe Perches | bd6f0bb | 2014-05-04 17:05:13 -0700 | [diff] [blame] | 371 | /* requires CD R/RW */ |
| 372 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, |
| 373 | disc_information *di) |
| 374 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 375 | const struct cdrom_device_ops *cdo = cdi->ops; |
Joe Perches | bd6f0bb | 2014-05-04 17:05:13 -0700 | [diff] [blame] | 376 | struct packet_command cgc; |
| 377 | int ret, buflen; |
| 378 | |
| 379 | /* set up command and get the disc info */ |
| 380 | init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); |
| 381 | cgc.cmd[0] = GPCMD_READ_DISC_INFO; |
| 382 | cgc.cmd[8] = cgc.buflen = 2; |
| 383 | cgc.quiet = 1; |
| 384 | |
| 385 | ret = cdo->generic_packet(cdi, &cgc); |
| 386 | if (ret) |
| 387 | return ret; |
| 388 | |
| 389 | /* not all drives have the same disc_info length, so requeue |
| 390 | * packet with the length the drive tells us it can supply |
| 391 | */ |
| 392 | buflen = be16_to_cpu(di->disc_information_length) + |
| 393 | sizeof(di->disc_information_length); |
| 394 | |
| 395 | if (buflen > sizeof(disc_information)) |
| 396 | buflen = sizeof(disc_information); |
| 397 | |
| 398 | cgc.cmd[8] = cgc.buflen = buflen; |
| 399 | ret = cdo->generic_packet(cdi, &cgc); |
| 400 | if (ret) |
| 401 | return ret; |
| 402 | |
| 403 | /* return actual fill size */ |
| 404 | return buflen; |
| 405 | } |
| 406 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | /* This macro makes sure we don't have to check on cdrom_device_ops |
| 408 | * existence in the run-time routines below. Change_capability is a |
| 409 | * hack to have the capability flags defined const, while we can still |
| 410 | * change it here without gcc complaining at every line. |
| 411 | */ |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 412 | #define ENSURE(call, bits) \ |
| 413 | do { \ |
| 414 | if (cdo->call == NULL) \ |
| 415 | *change_capability &= ~(bits); \ |
| 416 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | |
| 418 | /* |
| 419 | * the first prototypes used 0x2c as the page code for the mrw mode page, |
| 420 | * subsequently this was changed to 0x03. probe the one used by this drive |
| 421 | */ |
| 422 | static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) |
| 423 | { |
| 424 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 425 | char buffer[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 427 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
| 429 | cgc.timeout = HZ; |
| 430 | cgc.quiet = 1; |
| 431 | |
| 432 | if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { |
| 433 | cdi->mrw_mode_page = MRW_MODE_PC; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 434 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { |
| 436 | cdi->mrw_mode_page = MRW_MODE_PC_PRE1; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 437 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | } |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 439 | |
| 440 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) |
| 444 | { |
| 445 | struct packet_command cgc; |
| 446 | struct mrw_feature_desc *mfd; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 447 | unsigned char buffer[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | int ret; |
| 449 | |
| 450 | *write = 0; |
| 451 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 452 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
| 454 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; |
| 455 | cgc.cmd[3] = CDF_MRW; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 456 | cgc.cmd[8] = sizeof(buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | cgc.quiet = 1; |
| 458 | |
| 459 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 460 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | |
| 462 | mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 463 | if (be16_to_cpu(mfd->feature_code) != CDF_MRW) |
| 464 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | *write = mfd->write; |
| 466 | |
| 467 | if ((ret = cdrom_mrw_probe_pc(cdi))) { |
| 468 | *write = 0; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 469 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | } |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 471 | |
| 472 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) |
| 476 | { |
| 477 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 478 | unsigned char buffer[12]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | int ret; |
| 480 | |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 481 | pr_info("%sstarting format\n", cont ? "Re" : ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | |
| 483 | /* |
| 484 | * FmtData bit set (bit 4), format type is 1 |
| 485 | */ |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 486 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | cgc.cmd[0] = GPCMD_FORMAT_UNIT; |
| 488 | cgc.cmd[1] = (1 << 4) | 1; |
| 489 | |
| 490 | cgc.timeout = 5 * 60 * HZ; |
| 491 | |
| 492 | /* |
| 493 | * 4 byte format list header, 8 byte format list descriptor |
| 494 | */ |
| 495 | buffer[1] = 1 << 1; |
| 496 | buffer[3] = 8; |
| 497 | |
| 498 | /* |
| 499 | * nr_blocks field |
| 500 | */ |
| 501 | buffer[4] = 0xff; |
| 502 | buffer[5] = 0xff; |
| 503 | buffer[6] = 0xff; |
| 504 | buffer[7] = 0xff; |
| 505 | |
| 506 | buffer[8] = 0x24 << 2; |
| 507 | buffer[11] = cont; |
| 508 | |
| 509 | ret = cdi->ops->generic_packet(cdi, &cgc); |
| 510 | if (ret) |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 511 | pr_info("bgformat failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | |
| 513 | return ret; |
| 514 | } |
| 515 | |
| 516 | static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) |
| 517 | { |
| 518 | struct packet_command cgc; |
| 519 | |
| 520 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 521 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; |
| 522 | |
| 523 | /* |
| 524 | * Session = 1, Track = 0 |
| 525 | */ |
| 526 | cgc.cmd[1] = !!immed; |
| 527 | cgc.cmd[2] = 1 << 1; |
| 528 | |
| 529 | cgc.timeout = 5 * 60 * HZ; |
| 530 | |
| 531 | return cdi->ops->generic_packet(cdi, &cgc); |
| 532 | } |
| 533 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi) |
| 535 | { |
| 536 | disc_information di; |
| 537 | int ret; |
| 538 | |
| 539 | ret = cdrom_get_disc_info(cdi, &di); |
| 540 | if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) |
| 541 | return 1; |
| 542 | |
| 543 | ret = 0; |
| 544 | if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 545 | pr_info("issuing MRW background format suspend\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | ret = cdrom_mrw_bgformat_susp(cdi, 0); |
| 547 | } |
| 548 | |
Jens Axboe | 7da21a0 | 2005-05-01 12:12:52 -0700 | [diff] [blame] | 549 | if (!ret && cdi->media_written) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | ret = cdrom_flush_cache(cdi); |
| 551 | |
| 552 | return ret; |
| 553 | } |
| 554 | |
| 555 | static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) |
| 556 | { |
| 557 | struct packet_command cgc; |
| 558 | struct mode_page_header *mph; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 559 | char buffer[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | int ret, offset, size; |
| 561 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 562 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 564 | cgc.buffer = buffer; |
| 565 | cgc.buflen = sizeof(buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 567 | ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0); |
| 568 | if (ret) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 569 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 571 | mph = (struct mode_page_header *)buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | offset = be16_to_cpu(mph->desc_length); |
| 573 | size = be16_to_cpu(mph->mode_data_length) + 2; |
| 574 | |
| 575 | buffer[offset + 3] = space; |
| 576 | cgc.buflen = size; |
| 577 | |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 578 | ret = cdrom_mode_select(cdi, &cgc); |
| 579 | if (ret) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 580 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 582 | pr_info("%s: mrw address space %s selected\n", |
| 583 | cdi->name, mrw_address_space[space]); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 584 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | } |
| 586 | |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 587 | int register_cdrom(struct cdrom_device_info *cdi) |
| 588 | { |
| 589 | static char banner_printed; |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 590 | const struct cdrom_device_ops *cdo = cdi->ops; |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 591 | int *change_capability = (int *)&cdo->capability; /* hack */ |
| 592 | |
| 593 | cd_dbg(CD_OPEN, "entering register_cdrom\n"); |
| 594 | |
| 595 | if (cdo->open == NULL || cdo->release == NULL) |
| 596 | return -EINVAL; |
| 597 | if (!banner_printed) { |
| 598 | pr_info("Uniform CD-ROM driver " REVISION "\n"); |
| 599 | banner_printed = 1; |
| 600 | cdrom_sysctl_register(); |
| 601 | } |
| 602 | |
| 603 | ENSURE(drive_status, CDC_DRIVE_STATUS); |
| 604 | if (cdo->check_events == NULL && cdo->media_changed == NULL) |
| 605 | *change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC); |
| 606 | ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); |
| 607 | ENSURE(lock_door, CDC_LOCK); |
| 608 | ENSURE(select_speed, CDC_SELECT_SPEED); |
| 609 | ENSURE(get_last_session, CDC_MULTI_SESSION); |
| 610 | ENSURE(get_mcn, CDC_MCN); |
| 611 | ENSURE(reset, CDC_RESET); |
| 612 | ENSURE(generic_packet, CDC_GENERIC_PACKET); |
| 613 | cdi->mc_flags = 0; |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 614 | cdi->options = CDO_USE_FFLAGS; |
| 615 | |
| 616 | if (autoclose == 1 && CDROM_CAN(CDC_CLOSE_TRAY)) |
| 617 | cdi->options |= (int) CDO_AUTO_CLOSE; |
| 618 | if (autoeject == 1 && CDROM_CAN(CDC_OPEN_TRAY)) |
| 619 | cdi->options |= (int) CDO_AUTO_EJECT; |
| 620 | if (lockdoor == 1) |
| 621 | cdi->options |= (int) CDO_LOCK; |
| 622 | if (check_media_type == 1) |
| 623 | cdi->options |= (int) CDO_CHECK_TYPE; |
| 624 | |
| 625 | if (CDROM_CAN(CDC_MRW_W)) |
| 626 | cdi->exit = cdrom_mrw_exit; |
| 627 | |
| 628 | if (cdi->disk) |
| 629 | cdi->cdda_method = CDDA_BPC_FULL; |
| 630 | else |
| 631 | cdi->cdda_method = CDDA_OLD; |
| 632 | |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 633 | WARN_ON(!cdo->generic_packet); |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 634 | |
| 635 | cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); |
| 636 | mutex_lock(&cdrom_mutex); |
| 637 | list_add(&cdi->list, &cdrom_list); |
| 638 | mutex_unlock(&cdrom_mutex); |
| 639 | return 0; |
| 640 | } |
| 641 | #undef ENSURE |
| 642 | |
| 643 | void unregister_cdrom(struct cdrom_device_info *cdi) |
| 644 | { |
| 645 | cd_dbg(CD_OPEN, "entering unregister_cdrom\n"); |
| 646 | |
| 647 | mutex_lock(&cdrom_mutex); |
| 648 | list_del(&cdi->list); |
| 649 | mutex_unlock(&cdrom_mutex); |
| 650 | |
| 651 | if (cdi->exit) |
| 652 | cdi->exit(cdi); |
| 653 | |
Joe Perches | 40569c6 | 2014-05-04 17:05:12 -0700 | [diff] [blame] | 654 | cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); |
| 655 | } |
| 656 | |
| 657 | int cdrom_get_media_event(struct cdrom_device_info *cdi, |
| 658 | struct media_event_desc *med) |
| 659 | { |
| 660 | struct packet_command cgc; |
| 661 | unsigned char buffer[8]; |
| 662 | struct event_header *eh = (struct event_header *)buffer; |
| 663 | |
| 664 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
| 665 | cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; |
| 666 | cgc.cmd[1] = 1; /* IMMED */ |
| 667 | cgc.cmd[4] = 1 << 4; /* media event */ |
| 668 | cgc.cmd[8] = sizeof(buffer); |
| 669 | cgc.quiet = 1; |
| 670 | |
| 671 | if (cdi->ops->generic_packet(cdi, &cgc)) |
| 672 | return 1; |
| 673 | |
| 674 | if (be16_to_cpu(eh->data_len) < sizeof(*med)) |
| 675 | return 1; |
| 676 | |
| 677 | if (eh->nea || eh->notification_class != 0x4) |
| 678 | return 1; |
| 679 | |
| 680 | memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); |
| 681 | return 0; |
| 682 | } |
| 683 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | static int cdrom_get_random_writable(struct cdrom_device_info *cdi, |
| 685 | struct rwrt_feature_desc *rfd) |
| 686 | { |
| 687 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 688 | char buffer[24]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | int ret; |
| 690 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 691 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | |
| 693 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ |
| 694 | cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 695 | cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | cgc.quiet = 1; |
| 697 | |
| 698 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 699 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | |
| 701 | memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 702 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | } |
| 704 | |
| 705 | static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) |
| 706 | { |
| 707 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 708 | char buffer[16]; |
Alexey Dobriyan | 56052d5 | 2005-12-01 17:10:40 -0500 | [diff] [blame] | 709 | __be16 *feature_code; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | int ret; |
| 711 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 712 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
| 714 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; |
| 715 | cgc.cmd[3] = CDF_HWDM; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 716 | cgc.cmd[8] = sizeof(buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | cgc.quiet = 1; |
| 718 | |
| 719 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 720 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | |
Alexey Dobriyan | 56052d5 | 2005-12-01 17:10:40 -0500 | [diff] [blame] | 722 | feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | if (be16_to_cpu(*feature_code) == CDF_HWDM) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 724 | return 0; |
| 725 | |
| 726 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | } |
| 728 | |
| 729 | |
| 730 | static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) |
| 731 | { |
| 732 | struct rwrt_feature_desc rfd; |
| 733 | int ret; |
| 734 | |
| 735 | *write = 0; |
| 736 | |
| 737 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) |
| 738 | return ret; |
| 739 | |
| 740 | if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) |
| 741 | *write = 1; |
| 742 | |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | static int cdrom_media_erasable(struct cdrom_device_info *cdi) |
| 747 | { |
| 748 | disc_information di; |
| 749 | int ret; |
| 750 | |
| 751 | ret = cdrom_get_disc_info(cdi, &di); |
| 752 | if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) |
| 753 | return -1; |
| 754 | |
| 755 | return di.erasable; |
| 756 | } |
| 757 | |
| 758 | /* |
| 759 | * FIXME: check RO bit |
| 760 | */ |
| 761 | static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) |
| 762 | { |
| 763 | int ret = cdrom_media_erasable(cdi); |
| 764 | |
| 765 | /* |
| 766 | * allow writable open if media info read worked and media is |
| 767 | * erasable, _or_ if it fails since not all drives support it |
| 768 | */ |
| 769 | if (!ret) |
| 770 | return 1; |
| 771 | |
| 772 | return 0; |
| 773 | } |
| 774 | |
| 775 | static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) |
| 776 | { |
| 777 | disc_information di; |
| 778 | int ret; |
| 779 | |
| 780 | /* |
| 781 | * always reset to DMA lba space on open |
| 782 | */ |
| 783 | if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 784 | pr_err("failed setting lba address space\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | return 1; |
| 786 | } |
| 787 | |
| 788 | ret = cdrom_get_disc_info(cdi, &di); |
| 789 | if (ret < 0 || ret < offsetof(typeof(di),disc_type)) |
| 790 | return 1; |
| 791 | |
| 792 | if (!di.erasable) |
| 793 | return 1; |
| 794 | |
| 795 | /* |
| 796 | * mrw_status |
| 797 | * 0 - not MRW formatted |
| 798 | * 1 - MRW bgformat started, but not running or complete |
| 799 | * 2 - MRW bgformat in progress |
| 800 | * 3 - MRW formatting complete |
| 801 | */ |
| 802 | ret = 0; |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 803 | pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | if (!di.mrw_status) |
| 805 | ret = 1; |
| 806 | else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && |
| 807 | mrw_format_restart) |
| 808 | ret = cdrom_mrw_bgformat(cdi, 1); |
| 809 | |
| 810 | return ret; |
| 811 | } |
| 812 | |
| 813 | static int mo_open_write(struct cdrom_device_info *cdi) |
| 814 | { |
| 815 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 816 | char buffer[255]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | int ret; |
| 818 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 819 | init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | cgc.quiet = 1; |
| 821 | |
| 822 | /* |
| 823 | * obtain write protect information as per |
| 824 | * drivers/scsi/sd.c:sd_read_write_protect_flag |
| 825 | */ |
| 826 | |
| 827 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); |
| 828 | if (ret) |
| 829 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); |
| 830 | if (ret) { |
| 831 | cgc.buflen = 255; |
| 832 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); |
| 833 | } |
| 834 | |
| 835 | /* drive gave us no info, let the user go ahead */ |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 836 | if (ret) |
| 837 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 839 | return buffer[3] & 0x80; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | } |
| 841 | |
| 842 | static int cdrom_ram_open_write(struct cdrom_device_info *cdi) |
| 843 | { |
| 844 | struct rwrt_feature_desc rfd; |
| 845 | int ret; |
| 846 | |
| 847 | if ((ret = cdrom_has_defect_mgt(cdi))) |
| 848 | return ret; |
| 849 | |
| 850 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) |
| 851 | return ret; |
| 852 | else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) |
| 853 | ret = !rfd.curr; |
| 854 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 855 | cd_dbg(CD_OPEN, "can open for random write\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | return ret; |
| 857 | } |
| 858 | |
| 859 | static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) |
| 860 | { |
| 861 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 862 | char buffer[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | int ret, mmc3_profile; |
| 864 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 865 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | |
| 867 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; |
| 868 | cgc.cmd[1] = 0; |
| 869 | cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 870 | cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | cgc.quiet = 1; |
| 872 | |
| 873 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
| 874 | mmc3_profile = 0xffff; |
| 875 | else |
| 876 | mmc3_profile = (buffer[6] << 8) | buffer[7]; |
| 877 | |
| 878 | cdi->mmc3_profile = mmc3_profile; |
| 879 | } |
| 880 | |
| 881 | static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) |
| 882 | { |
| 883 | switch (cdi->mmc3_profile) { |
| 884 | case 0x12: /* DVD-RAM */ |
| 885 | case 0x1A: /* DVD+RW */ |
Georgios Toptsidis | f7e7868 | 2015-09-25 10:50:08 +0300 | [diff] [blame] | 886 | case 0x43: /* BD-RE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | return 0; |
| 888 | default: |
| 889 | return 1; |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | /* |
| 894 | * returns 0 for ok to open write, non-0 to disallow |
| 895 | */ |
| 896 | static int cdrom_open_write(struct cdrom_device_info *cdi) |
| 897 | { |
| 898 | int mrw, mrw_write, ram_write; |
| 899 | int ret = 1; |
| 900 | |
| 901 | mrw = 0; |
| 902 | if (!cdrom_is_mrw(cdi, &mrw_write)) |
| 903 | mrw = 1; |
| 904 | |
| 905 | if (CDROM_CAN(CDC_MO_DRIVE)) |
| 906 | ram_write = 1; |
| 907 | else |
| 908 | (void) cdrom_is_random_writable(cdi, &ram_write); |
| 909 | |
| 910 | if (mrw) |
| 911 | cdi->mask &= ~CDC_MRW; |
| 912 | else |
| 913 | cdi->mask |= CDC_MRW; |
| 914 | |
| 915 | if (mrw_write) |
| 916 | cdi->mask &= ~CDC_MRW_W; |
| 917 | else |
| 918 | cdi->mask |= CDC_MRW_W; |
| 919 | |
| 920 | if (ram_write) |
| 921 | cdi->mask &= ~CDC_RAM; |
| 922 | else |
| 923 | cdi->mask |= CDC_RAM; |
| 924 | |
| 925 | if (CDROM_CAN(CDC_MRW_W)) |
| 926 | ret = cdrom_mrw_open_write(cdi); |
| 927 | else if (CDROM_CAN(CDC_DVD_RAM)) |
| 928 | ret = cdrom_dvdram_open_write(cdi); |
| 929 | else if (CDROM_CAN(CDC_RAM) && |
| 930 | !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE)) |
| 931 | ret = cdrom_ram_open_write(cdi); |
| 932 | else if (CDROM_CAN(CDC_MO_DRIVE)) |
| 933 | ret = mo_open_write(cdi); |
| 934 | else if (!cdrom_is_dvd_rw(cdi)) |
| 935 | ret = 0; |
| 936 | |
| 937 | return ret; |
| 938 | } |
| 939 | |
| 940 | static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) |
| 941 | { |
| 942 | struct packet_command cgc; |
| 943 | |
| 944 | if (cdi->mmc3_profile != 0x1a) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 945 | cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | return; |
| 947 | } |
| 948 | |
| 949 | if (!cdi->media_written) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 950 | cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | return; |
| 952 | } |
| 953 | |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 954 | pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | |
| 956 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 957 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; |
| 958 | cgc.timeout = 30*HZ; |
| 959 | cdi->ops->generic_packet(cdi, &cgc); |
| 960 | |
| 961 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 962 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; |
| 963 | cgc.timeout = 3000*HZ; |
| 964 | cgc.quiet = 1; |
| 965 | cdi->ops->generic_packet(cdi, &cgc); |
| 966 | |
| 967 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 968 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; |
| 969 | cgc.cmd[2] = 2; /* Close session */ |
| 970 | cgc.quiet = 1; |
| 971 | cgc.timeout = 3000*HZ; |
| 972 | cdi->ops->generic_packet(cdi, &cgc); |
| 973 | |
| 974 | cdi->media_written = 0; |
| 975 | } |
| 976 | |
| 977 | static int cdrom_close_write(struct cdrom_device_info *cdi) |
| 978 | { |
| 979 | #if 0 |
| 980 | return cdrom_flush_cache(cdi); |
| 981 | #else |
| 982 | return 0; |
| 983 | #endif |
| 984 | } |
| 985 | |
Joe Perches | a803393 | 2014-05-04 17:05:11 -0700 | [diff] [blame] | 986 | /* badly broken, I know. Is due for a fixup anytime. */ |
| 987 | static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks) |
| 988 | { |
| 989 | struct cdrom_tochdr header; |
| 990 | struct cdrom_tocentry entry; |
| 991 | int ret, i; |
| 992 | tracks->data = 0; |
| 993 | tracks->audio = 0; |
| 994 | tracks->cdi = 0; |
| 995 | tracks->xa = 0; |
| 996 | tracks->error = 0; |
| 997 | cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); |
| 998 | /* Grab the TOC header so we can see how many tracks there are */ |
| 999 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); |
| 1000 | if (ret) { |
| 1001 | if (ret == -ENOMEDIUM) |
| 1002 | tracks->error = CDS_NO_DISC; |
| 1003 | else |
| 1004 | tracks->error = CDS_NO_INFO; |
| 1005 | return; |
| 1006 | } |
| 1007 | /* check what type of tracks are on this disc */ |
| 1008 | entry.cdte_format = CDROM_MSF; |
| 1009 | for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { |
| 1010 | entry.cdte_track = i; |
| 1011 | if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { |
| 1012 | tracks->error = CDS_NO_INFO; |
| 1013 | return; |
| 1014 | } |
| 1015 | if (entry.cdte_ctrl & CDROM_DATA_TRACK) { |
| 1016 | if (entry.cdte_format == 0x10) |
| 1017 | tracks->cdi++; |
| 1018 | else if (entry.cdte_format == 0x20) |
| 1019 | tracks->xa++; |
| 1020 | else |
| 1021 | tracks->data++; |
| 1022 | } else { |
| 1023 | tracks->audio++; |
| 1024 | } |
| 1025 | cd_dbg(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", |
| 1026 | i, entry.cdte_format, entry.cdte_ctrl); |
| 1027 | } |
| 1028 | cd_dbg(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", |
| 1029 | header.cdth_trk1, tracks->audio, tracks->data, |
| 1030 | tracks->cdi, tracks->xa); |
| 1031 | } |
| 1032 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | static |
Joe Perches | 82b9154 | 2014-05-04 17:05:05 -0700 | [diff] [blame] | 1034 | int open_for_data(struct cdrom_device_info *cdi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | { |
| 1036 | int ret; |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1037 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | tracktype tracks; |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1039 | cd_dbg(CD_OPEN, "entering open_for_data\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | /* Check if the driver can report drive status. If it can, we |
| 1041 | can do clever things. If it can't, well, we at least tried! */ |
| 1042 | if (cdo->drive_status != NULL) { |
| 1043 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1044 | cd_dbg(CD_OPEN, "drive_status=%d\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | if (ret == CDS_TRAY_OPEN) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1046 | cd_dbg(CD_OPEN, "the tray is open...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | /* can/may i close it? */ |
| 1048 | if (CDROM_CAN(CDC_CLOSE_TRAY) && |
| 1049 | cdi->options & CDO_AUTO_CLOSE) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1050 | cd_dbg(CD_OPEN, "trying to close the tray\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | ret=cdo->tray_move(cdi,0); |
| 1052 | if (ret) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1053 | cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | /* Ignore the error from the low |
| 1055 | level driver. We don't care why it |
| 1056 | couldn't close the tray. We only care |
| 1057 | that there is no disc in the drive, |
| 1058 | since that is the _REAL_ problem here.*/ |
| 1059 | ret=-ENOMEDIUM; |
| 1060 | goto clean_up_and_return; |
| 1061 | } |
| 1062 | } else { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1063 | cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | ret=-ENOMEDIUM; |
| 1065 | goto clean_up_and_return; |
| 1066 | } |
| 1067 | /* Ok, the door should be closed now.. Check again */ |
| 1068 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
| 1069 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1070 | cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); |
| 1071 | cd_dbg(CD_OPEN, "tray might not contain a medium\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | ret=-ENOMEDIUM; |
| 1073 | goto clean_up_and_return; |
| 1074 | } |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1075 | cd_dbg(CD_OPEN, "the tray is now closed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | } |
| 1077 | /* the door should be closed now, check for the disc */ |
| 1078 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
| 1079 | if (ret!=CDS_DISC_OK) { |
| 1080 | ret = -ENOMEDIUM; |
| 1081 | goto clean_up_and_return; |
| 1082 | } |
| 1083 | } |
| 1084 | cdrom_count_tracks(cdi, &tracks); |
| 1085 | if (tracks.error == CDS_NO_DISC) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1086 | cd_dbg(CD_OPEN, "bummer. no disc.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | ret=-ENOMEDIUM; |
| 1088 | goto clean_up_and_return; |
| 1089 | } |
| 1090 | /* CD-Players which don't use O_NONBLOCK, workman |
| 1091 | * for example, need bit CDO_CHECK_TYPE cleared! */ |
| 1092 | if (tracks.data==0) { |
| 1093 | if (cdi->options & CDO_CHECK_TYPE) { |
| 1094 | /* give people a warning shot, now that CDO_CHECK_TYPE |
| 1095 | is the default case! */ |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1096 | cd_dbg(CD_OPEN, "bummer. wrong media type.\n"); |
| 1097 | cd_dbg(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", |
| 1098 | (unsigned int)task_pid_nr(current)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | ret=-EMEDIUMTYPE; |
| 1100 | goto clean_up_and_return; |
| 1101 | } |
| 1102 | else { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1103 | cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | } |
| 1105 | } |
| 1106 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1107 | cd_dbg(CD_OPEN, "all seems well, opening the devicen"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | |
| 1109 | /* all seems well, we can open the device */ |
| 1110 | ret = cdo->open(cdi, 0); /* open for data */ |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1111 | cd_dbg(CD_OPEN, "opening the device gave me %d\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | /* After all this careful checking, we shouldn't have problems |
| 1113 | opening the device, but we don't want the device locked if |
| 1114 | this somehow fails... */ |
| 1115 | if (ret) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1116 | cd_dbg(CD_OPEN, "open device failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | goto clean_up_and_return; |
| 1118 | } |
| 1119 | if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { |
| 1120 | cdo->lock_door(cdi, 1); |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1121 | cd_dbg(CD_OPEN, "door locked\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | } |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1123 | cd_dbg(CD_OPEN, "device opened successfully\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | return ret; |
| 1125 | |
| 1126 | /* Something failed. Try to unlock the drive, because some drivers |
| 1127 | (notably ide-cd) lock the drive after every command. This produced |
| 1128 | a nasty bug where after mount failed, the drive would remain locked! |
| 1129 | This ensures that the drive gets unlocked after a mount fails. This |
| 1130 | is a goto to avoid bloating the driver with redundant code. */ |
| 1131 | clean_up_and_return: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1132 | cd_dbg(CD_OPEN, "open failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
| 1134 | cdo->lock_door(cdi, 0); |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1135 | cd_dbg(CD_OPEN, "door unlocked\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | } |
| 1137 | return ret; |
| 1138 | } |
| 1139 | |
Joe Perches | 82b9154 | 2014-05-04 17:05:05 -0700 | [diff] [blame] | 1140 | /* We use the open-option O_NONBLOCK to indicate that the |
| 1141 | * purpose of opening is only for subsequent ioctl() calls; no device |
| 1142 | * integrity checks are performed. |
| 1143 | * |
| 1144 | * We hope that all cd-player programs will adopt this convention. It |
| 1145 | * is in their own interest: device control becomes a lot easier |
| 1146 | * this way. |
| 1147 | */ |
| 1148 | int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, |
| 1149 | fmode_t mode) |
| 1150 | { |
| 1151 | int ret; |
| 1152 | |
| 1153 | cd_dbg(CD_OPEN, "entering cdrom_open\n"); |
| 1154 | |
| 1155 | /* open is event synchronization point, check events first */ |
| 1156 | check_disk_change(bdev); |
| 1157 | |
| 1158 | /* if this was a O_NONBLOCK open and we should honor the flags, |
| 1159 | * do a quick open without drive/disc integrity checks. */ |
| 1160 | cdi->use_count++; |
| 1161 | if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) { |
| 1162 | ret = cdi->ops->open(cdi, 1); |
| 1163 | } else { |
| 1164 | ret = open_for_data(cdi); |
| 1165 | if (ret) |
| 1166 | goto err; |
| 1167 | cdrom_mmc3_profile(cdi); |
| 1168 | if (mode & FMODE_WRITE) { |
| 1169 | ret = -EROFS; |
| 1170 | if (cdrom_open_write(cdi)) |
| 1171 | goto err_release; |
| 1172 | if (!CDROM_CAN(CDC_RAM)) |
| 1173 | goto err_release; |
| 1174 | ret = 0; |
| 1175 | cdi->media_written = 0; |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | if (ret) |
| 1180 | goto err; |
| 1181 | |
| 1182 | cd_dbg(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", |
| 1183 | cdi->name, cdi->use_count); |
| 1184 | return 0; |
| 1185 | err_release: |
| 1186 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
| 1187 | cdi->ops->lock_door(cdi, 0); |
| 1188 | cd_dbg(CD_OPEN, "door unlocked\n"); |
| 1189 | } |
| 1190 | cdi->ops->release(cdi); |
| 1191 | err: |
| 1192 | cdi->use_count--; |
| 1193 | return ret; |
| 1194 | } |
| 1195 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | /* This code is similar to that in open_for_data. The routine is called |
| 1197 | whenever an audio play operation is requested. |
| 1198 | */ |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1199 | static int check_for_audio_disc(struct cdrom_device_info *cdi, |
| 1200 | const struct cdrom_device_ops *cdo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | { |
| 1202 | int ret; |
| 1203 | tracktype tracks; |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1204 | cd_dbg(CD_OPEN, "entering check_for_audio_disc\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | if (!(cdi->options & CDO_CHECK_TYPE)) |
| 1206 | return 0; |
| 1207 | if (cdo->drive_status != NULL) { |
| 1208 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1209 | cd_dbg(CD_OPEN, "drive_status=%d\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | if (ret == CDS_TRAY_OPEN) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1211 | cd_dbg(CD_OPEN, "the tray is open...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | /* can/may i close it? */ |
| 1213 | if (CDROM_CAN(CDC_CLOSE_TRAY) && |
| 1214 | cdi->options & CDO_AUTO_CLOSE) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1215 | cd_dbg(CD_OPEN, "trying to close the tray\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | ret=cdo->tray_move(cdi,0); |
| 1217 | if (ret) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1218 | cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | /* Ignore the error from the low |
| 1220 | level driver. We don't care why it |
| 1221 | couldn't close the tray. We only care |
| 1222 | that there is no disc in the drive, |
| 1223 | since that is the _REAL_ problem here.*/ |
| 1224 | return -ENOMEDIUM; |
| 1225 | } |
| 1226 | } else { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1227 | cd_dbg(CD_OPEN, "bummer. this driver can't close the tray.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | return -ENOMEDIUM; |
| 1229 | } |
| 1230 | /* Ok, the door should be closed now.. Check again */ |
| 1231 | ret = cdo->drive_status(cdi, CDSL_CURRENT); |
| 1232 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1233 | cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | return -ENOMEDIUM; |
| 1235 | } |
| 1236 | if (ret!=CDS_DISC_OK) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1237 | cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | return -EIO; |
| 1239 | } |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1240 | cd_dbg(CD_OPEN, "the tray is now closed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | } |
| 1242 | } |
| 1243 | cdrom_count_tracks(cdi, &tracks); |
| 1244 | if (tracks.error) |
| 1245 | return(tracks.error); |
| 1246 | |
| 1247 | if (tracks.audio==0) |
| 1248 | return -EMEDIUMTYPE; |
| 1249 | |
| 1250 | return 0; |
| 1251 | } |
| 1252 | |
Al Viro | bbc1cc9 | 2007-10-07 17:54:28 -0400 | [diff] [blame] | 1253 | void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1255 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | int opened_for_data; |
| 1257 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1258 | cd_dbg(CD_CLOSE, "entering cdrom_release\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | |
| 1260 | if (cdi->use_count > 0) |
| 1261 | cdi->use_count--; |
Borislav Petkov | 35841f7 | 2008-02-06 01:38:08 -0800 | [diff] [blame] | 1262 | |
| 1263 | if (cdi->use_count == 0) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1264 | cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", |
| 1265 | cdi->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | cdrom_dvd_rw_close_write(cdi); |
Borislav Petkov | 35841f7 | 2008-02-06 01:38:08 -0800 | [diff] [blame] | 1267 | |
Paolo Bonzini | cdccaa9 | 2012-02-08 20:03:14 +0100 | [diff] [blame] | 1268 | if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1269 | cd_dbg(CD_CLOSE, "Unlocking door!\n"); |
Borislav Petkov | 35841f7 | 2008-02-06 01:38:08 -0800 | [diff] [blame] | 1270 | cdo->lock_door(cdi, 0); |
| 1271 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | } |
Borislav Petkov | 35841f7 | 2008-02-06 01:38:08 -0800 | [diff] [blame] | 1273 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || |
Al Viro | bbc1cc9 | 2007-10-07 17:54:28 -0400 | [diff] [blame] | 1275 | !(mode & FMODE_NDELAY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | |
| 1277 | /* |
| 1278 | * flush cache on last write release |
| 1279 | */ |
| 1280 | if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) |
| 1281 | cdrom_close_write(cdi); |
| 1282 | |
| 1283 | cdo->release(cdi); |
| 1284 | if (cdi->use_count == 0) { /* last process that closes dev*/ |
| 1285 | if (opened_for_data && |
| 1286 | cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) |
| 1287 | cdo->tray_move(cdi, 1); |
| 1288 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | } |
| 1290 | |
| 1291 | static int cdrom_read_mech_status(struct cdrom_device_info *cdi, |
| 1292 | struct cdrom_changer_info *buf) |
| 1293 | { |
| 1294 | struct packet_command cgc; |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1295 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | int length; |
| 1297 | |
| 1298 | /* |
| 1299 | * Sanyo changer isn't spec compliant (doesn't use regular change |
| 1300 | * LOAD_UNLOAD command, and it doesn't implement the mech status |
| 1301 | * command below |
| 1302 | */ |
| 1303 | if (cdi->sanyo_slot) { |
| 1304 | buf->hdr.nslots = 3; |
| 1305 | buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; |
| 1306 | for (length = 0; length < 3; length++) { |
| 1307 | buf->slots[length].disc_present = 1; |
| 1308 | buf->slots[length].change = 0; |
| 1309 | } |
| 1310 | return 0; |
| 1311 | } |
| 1312 | |
| 1313 | length = sizeof(struct cdrom_mechstat_header) + |
| 1314 | cdi->capacity * sizeof(struct cdrom_slot); |
| 1315 | |
| 1316 | init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); |
| 1317 | cgc.cmd[0] = GPCMD_MECHANISM_STATUS; |
| 1318 | cgc.cmd[8] = (length >> 8) & 0xff; |
| 1319 | cgc.cmd[9] = length & 0xff; |
| 1320 | return cdo->generic_packet(cdi, &cgc); |
| 1321 | } |
| 1322 | |
| 1323 | static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) |
| 1324 | { |
| 1325 | struct cdrom_changer_info *info; |
| 1326 | int ret; |
| 1327 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1328 | cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | if (cdi->sanyo_slot) |
| 1330 | return CDS_NO_INFO; |
| 1331 | |
| 1332 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 1333 | if (!info) |
| 1334 | return -ENOMEM; |
| 1335 | |
| 1336 | if ((ret = cdrom_read_mech_status(cdi, info))) |
| 1337 | goto out_free; |
| 1338 | |
| 1339 | if (info->slots[slot].disc_present) |
| 1340 | ret = CDS_DISC_OK; |
| 1341 | else |
| 1342 | ret = CDS_NO_DISC; |
| 1343 | |
| 1344 | out_free: |
| 1345 | kfree(info); |
| 1346 | return ret; |
| 1347 | } |
| 1348 | |
| 1349 | /* Return the number of slots for an ATAPI/SCSI cdrom, |
| 1350 | * return 1 if not a changer. |
| 1351 | */ |
| 1352 | int cdrom_number_of_slots(struct cdrom_device_info *cdi) |
| 1353 | { |
| 1354 | int status; |
| 1355 | int nslots = 1; |
| 1356 | struct cdrom_changer_info *info; |
| 1357 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1358 | cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | /* cdrom_read_mech_status requires a valid value for capacity: */ |
| 1360 | cdi->capacity = 0; |
| 1361 | |
| 1362 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 1363 | if (!info) |
| 1364 | return -ENOMEM; |
| 1365 | |
| 1366 | if ((status = cdrom_read_mech_status(cdi, info)) == 0) |
| 1367 | nslots = info->hdr.nslots; |
| 1368 | |
| 1369 | kfree(info); |
| 1370 | return nslots; |
| 1371 | } |
| 1372 | |
| 1373 | |
| 1374 | /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ |
| 1375 | static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) |
| 1376 | { |
| 1377 | struct packet_command cgc; |
| 1378 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1379 | cd_dbg(CD_CHANGER, "entering cdrom_load_unload()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | if (cdi->sanyo_slot && slot < 0) |
| 1381 | return 0; |
| 1382 | |
| 1383 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
| 1384 | cgc.cmd[0] = GPCMD_LOAD_UNLOAD; |
| 1385 | cgc.cmd[4] = 2 + (slot >= 0); |
| 1386 | cgc.cmd[8] = slot; |
| 1387 | cgc.timeout = 60 * HZ; |
| 1388 | |
| 1389 | /* The Sanyo 3 CD changer uses byte 7 of the |
| 1390 | GPCMD_TEST_UNIT_READY to command to switch CDs instead of |
| 1391 | using the GPCMD_LOAD_UNLOAD opcode. */ |
| 1392 | if (cdi->sanyo_slot && -1 < slot) { |
| 1393 | cgc.cmd[0] = GPCMD_TEST_UNIT_READY; |
| 1394 | cgc.cmd[7] = slot; |
| 1395 | cgc.cmd[4] = cgc.cmd[8] = 0; |
| 1396 | cdi->sanyo_slot = slot ? slot : 3; |
| 1397 | } |
| 1398 | |
| 1399 | return cdi->ops->generic_packet(cdi, &cgc); |
| 1400 | } |
| 1401 | |
| 1402 | static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) |
| 1403 | { |
| 1404 | struct cdrom_changer_info *info; |
| 1405 | int curslot; |
| 1406 | int ret; |
| 1407 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1408 | cd_dbg(CD_CHANGER, "entering cdrom_select_disc()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1409 | if (!CDROM_CAN(CDC_SELECT_DISC)) |
| 1410 | return -EDRIVE_CANT_DO_THIS; |
| 1411 | |
Tejun Heo | 2d92172 | 2010-12-08 20:57:38 +0100 | [diff] [blame] | 1412 | if (cdi->ops->check_events) |
| 1413 | cdi->ops->check_events(cdi, 0, slot); |
| 1414 | else |
| 1415 | cdi->ops->media_changed(cdi, slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | |
| 1417 | if (slot == CDSL_NONE) { |
| 1418 | /* set media changed bits, on both queues */ |
| 1419 | cdi->mc_flags = 0x3; |
| 1420 | return cdrom_load_unload(cdi, -1); |
| 1421 | } |
| 1422 | |
| 1423 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 1424 | if (!info) |
| 1425 | return -ENOMEM; |
| 1426 | |
| 1427 | if ((ret = cdrom_read_mech_status(cdi, info))) { |
| 1428 | kfree(info); |
| 1429 | return ret; |
| 1430 | } |
| 1431 | |
| 1432 | curslot = info->hdr.curslot; |
| 1433 | kfree(info); |
| 1434 | |
Paolo Bonzini | cdccaa9 | 2012-02-08 20:03:14 +0100 | [diff] [blame] | 1435 | if (cdi->use_count > 1 || cdi->keeplocked) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | if (slot == CDSL_CURRENT) { |
| 1437 | return curslot; |
| 1438 | } else { |
| 1439 | return -EBUSY; |
| 1440 | } |
| 1441 | } |
| 1442 | |
| 1443 | /* Specifying CDSL_CURRENT will attempt to load the currnet slot, |
| 1444 | which is useful if it had been previously unloaded. |
| 1445 | Whether it can or not, it returns the current slot. |
| 1446 | Similarly, if slot happens to be the current one, we still |
| 1447 | try and load it. */ |
| 1448 | if (slot == CDSL_CURRENT) |
| 1449 | slot = curslot; |
| 1450 | |
| 1451 | /* set media changed bits on both queues */ |
| 1452 | cdi->mc_flags = 0x3; |
| 1453 | if ((ret = cdrom_load_unload(cdi, slot))) |
| 1454 | return ret; |
| 1455 | |
| 1456 | return slot; |
| 1457 | } |
| 1458 | |
Tejun Heo | 2d92172 | 2010-12-08 20:57:38 +0100 | [diff] [blame] | 1459 | /* |
| 1460 | * As cdrom implements an extra ioctl consumer for media changed |
| 1461 | * event, it needs to buffer ->check_events() output, such that event |
| 1462 | * is not lost for both the usual VFS and ioctl paths. |
| 1463 | * cdi->{vfs|ioctl}_events are used to buffer pending events for each |
| 1464 | * path. |
| 1465 | * |
| 1466 | * XXX: Locking is non-existent. cdi->ops->check_events() can be |
| 1467 | * called in parallel and buffering fields are accessed without any |
| 1468 | * exclusion. The original media_changed code had the same problem. |
| 1469 | * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl |
| 1470 | * and remove this cruft altogether. It doesn't have much usefulness |
| 1471 | * at this point. |
| 1472 | */ |
| 1473 | static void cdrom_update_events(struct cdrom_device_info *cdi, |
| 1474 | unsigned int clearing) |
| 1475 | { |
| 1476 | unsigned int events; |
| 1477 | |
| 1478 | events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT); |
| 1479 | cdi->vfs_events |= events; |
| 1480 | cdi->ioctl_events |= events; |
| 1481 | } |
| 1482 | |
| 1483 | unsigned int cdrom_check_events(struct cdrom_device_info *cdi, |
| 1484 | unsigned int clearing) |
| 1485 | { |
| 1486 | unsigned int events; |
| 1487 | |
| 1488 | cdrom_update_events(cdi, clearing); |
| 1489 | events = cdi->vfs_events; |
| 1490 | cdi->vfs_events = 0; |
| 1491 | return events; |
| 1492 | } |
Jens Axboe | 30a7caa | 2010-12-16 17:58:50 +0100 | [diff] [blame] | 1493 | EXPORT_SYMBOL(cdrom_check_events); |
Tejun Heo | 2d92172 | 2010-12-08 20:57:38 +0100 | [diff] [blame] | 1494 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | /* We want to make media_changed accessible to the user through an |
| 1496 | * ioctl. The main problem now is that we must double-buffer the |
| 1497 | * low-level implementation, to assure that the VFS and the user both |
| 1498 | * see a medium change once. |
| 1499 | */ |
| 1500 | |
| 1501 | static |
| 1502 | int media_changed(struct cdrom_device_info *cdi, int queue) |
| 1503 | { |
| 1504 | unsigned int mask = (1 << (queue & 1)); |
| 1505 | int ret = !!(cdi->mc_flags & mask); |
Tejun Heo | 2d92172 | 2010-12-08 20:57:38 +0100 | [diff] [blame] | 1506 | bool changed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | |
| 1508 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
Tejun Heo | 2d92172 | 2010-12-08 20:57:38 +0100 | [diff] [blame] | 1509 | return ret; |
| 1510 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | /* changed since last call? */ |
Tejun Heo | 2d92172 | 2010-12-08 20:57:38 +0100 | [diff] [blame] | 1512 | if (cdi->ops->check_events) { |
| 1513 | BUG_ON(!queue); /* shouldn't be called from VFS path */ |
| 1514 | cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE); |
| 1515 | changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE; |
| 1516 | cdi->ioctl_events = 0; |
| 1517 | } else |
| 1518 | changed = cdi->ops->media_changed(cdi, CDSL_CURRENT); |
| 1519 | |
| 1520 | if (changed) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | cdi->mc_flags = 0x3; /* set bit on both queues */ |
| 1522 | ret |= 1; |
| 1523 | cdi->media_written = 0; |
| 1524 | } |
Tejun Heo | 2d92172 | 2010-12-08 20:57:38 +0100 | [diff] [blame] | 1525 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | cdi->mc_flags &= ~mask; /* clear bit */ |
| 1527 | return ret; |
| 1528 | } |
| 1529 | |
| 1530 | int cdrom_media_changed(struct cdrom_device_info *cdi) |
| 1531 | { |
| 1532 | /* This talks to the VFS, which doesn't like errors - just 1 or 0. |
| 1533 | * Returning "0" is always safe (media hasn't been changed). Do that |
| 1534 | * if the low-level cdrom driver dosn't support media changed. */ |
| 1535 | if (cdi == NULL || cdi->ops->media_changed == NULL) |
| 1536 | return 0; |
| 1537 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
| 1538 | return 0; |
| 1539 | return media_changed(cdi, 0); |
| 1540 | } |
| 1541 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | /* Requests to the low-level drivers will /always/ be done in the |
| 1543 | following format convention: |
| 1544 | |
| 1545 | CDROM_LBA: all data-related requests. |
| 1546 | CDROM_MSF: all audio-related requests. |
| 1547 | |
| 1548 | However, a low-level implementation is allowed to refuse this |
| 1549 | request, and return information in its own favorite format. |
| 1550 | |
| 1551 | It doesn't make sense /at all/ to ask for a play_audio in LBA |
| 1552 | format, or ask for multi-session info in MSF format. However, for |
| 1553 | backward compatibility these format requests will be satisfied, but |
| 1554 | the requests to the low-level drivers will be sanitized in the more |
| 1555 | meaningful format indicated above. |
| 1556 | */ |
| 1557 | |
| 1558 | static |
| 1559 | void sanitize_format(union cdrom_addr *addr, |
| 1560 | u_char * curr, u_char requested) |
| 1561 | { |
| 1562 | if (*curr == requested) |
| 1563 | return; /* nothing to be done! */ |
| 1564 | if (requested == CDROM_LBA) { |
| 1565 | addr->lba = (int) addr->msf.frame + |
| 1566 | 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); |
| 1567 | } else { /* CDROM_MSF */ |
| 1568 | int lba = addr->lba; |
| 1569 | addr->msf.frame = lba % 75; |
| 1570 | lba /= 75; |
| 1571 | lba += 2; |
| 1572 | addr->msf.second = lba % 60; |
| 1573 | addr->msf.minute = lba / 60; |
| 1574 | } |
| 1575 | *curr = requested; |
| 1576 | } |
| 1577 | |
| 1578 | void init_cdrom_command(struct packet_command *cgc, void *buf, int len, |
| 1579 | int type) |
| 1580 | { |
| 1581 | memset(cgc, 0, sizeof(struct packet_command)); |
| 1582 | if (buf) |
| 1583 | memset(buf, 0, len); |
| 1584 | cgc->buffer = (char *) buf; |
| 1585 | cgc->buflen = len; |
| 1586 | cgc->data_direction = type; |
Jens Axboe | 2e11c20 | 2007-01-03 08:10:35 +0100 | [diff] [blame] | 1587 | cgc->timeout = CDROM_DEF_TIMEOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | } |
| 1589 | |
| 1590 | /* DVD handling */ |
| 1591 | |
| 1592 | #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) |
| 1593 | #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) |
| 1594 | |
| 1595 | static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) |
| 1596 | { |
| 1597 | cgc->cmd[0] = GPCMD_REPORT_KEY; |
| 1598 | cgc->cmd[10] = type | (agid << 6); |
| 1599 | switch (type) { |
| 1600 | case 0: case 8: case 5: { |
| 1601 | cgc->buflen = 8; |
| 1602 | break; |
| 1603 | } |
| 1604 | case 1: { |
| 1605 | cgc->buflen = 16; |
| 1606 | break; |
| 1607 | } |
| 1608 | case 2: case 4: { |
| 1609 | cgc->buflen = 12; |
| 1610 | break; |
| 1611 | } |
| 1612 | } |
| 1613 | cgc->cmd[9] = cgc->buflen; |
| 1614 | cgc->data_direction = CGC_DATA_READ; |
| 1615 | } |
| 1616 | |
| 1617 | static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) |
| 1618 | { |
| 1619 | cgc->cmd[0] = GPCMD_SEND_KEY; |
| 1620 | cgc->cmd[10] = type | (agid << 6); |
| 1621 | switch (type) { |
| 1622 | case 1: { |
| 1623 | cgc->buflen = 16; |
| 1624 | break; |
| 1625 | } |
| 1626 | case 3: { |
| 1627 | cgc->buflen = 12; |
| 1628 | break; |
| 1629 | } |
| 1630 | case 6: { |
| 1631 | cgc->buflen = 8; |
| 1632 | break; |
| 1633 | } |
| 1634 | } |
| 1635 | cgc->cmd[9] = cgc->buflen; |
| 1636 | cgc->data_direction = CGC_DATA_WRITE; |
| 1637 | } |
| 1638 | |
| 1639 | static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) |
| 1640 | { |
| 1641 | int ret; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1642 | u_char buf[20]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | struct packet_command cgc; |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1644 | const struct cdrom_device_ops *cdo = cdi->ops; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1645 | rpc_state_t rpc_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1646 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1647 | memset(buf, 0, sizeof(buf)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1648 | init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); |
| 1649 | |
| 1650 | switch (ai->type) { |
| 1651 | /* LU data send */ |
| 1652 | case DVD_LU_SEND_AGID: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1653 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | cgc.quiet = 1; |
| 1655 | setup_report_key(&cgc, ai->lsa.agid, 0); |
| 1656 | |
| 1657 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1658 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | |
| 1660 | ai->lsa.agid = buf[7] >> 6; |
| 1661 | /* Returning data, let host change state */ |
| 1662 | break; |
| 1663 | |
| 1664 | case DVD_LU_SEND_KEY1: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1665 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1666 | setup_report_key(&cgc, ai->lsk.agid, 2); |
| 1667 | |
| 1668 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1669 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | |
| 1671 | copy_key(ai->lsk.key, &buf[4]); |
| 1672 | /* Returning data, let host change state */ |
| 1673 | break; |
| 1674 | |
| 1675 | case DVD_LU_SEND_CHALLENGE: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1676 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | setup_report_key(&cgc, ai->lsc.agid, 1); |
| 1678 | |
| 1679 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1680 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | |
| 1682 | copy_chal(ai->lsc.chal, &buf[4]); |
| 1683 | /* Returning data, let host change state */ |
| 1684 | break; |
| 1685 | |
| 1686 | /* Post-auth key */ |
| 1687 | case DVD_LU_SEND_TITLE_KEY: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1688 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | cgc.quiet = 1; |
| 1690 | setup_report_key(&cgc, ai->lstk.agid, 4); |
| 1691 | cgc.cmd[5] = ai->lstk.lba; |
| 1692 | cgc.cmd[4] = ai->lstk.lba >> 8; |
| 1693 | cgc.cmd[3] = ai->lstk.lba >> 16; |
| 1694 | cgc.cmd[2] = ai->lstk.lba >> 24; |
| 1695 | |
| 1696 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1697 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | |
| 1699 | ai->lstk.cpm = (buf[4] >> 7) & 1; |
| 1700 | ai->lstk.cp_sec = (buf[4] >> 6) & 1; |
| 1701 | ai->lstk.cgms = (buf[4] >> 4) & 3; |
| 1702 | copy_key(ai->lstk.title_key, &buf[5]); |
| 1703 | /* Returning data, let host change state */ |
| 1704 | break; |
| 1705 | |
| 1706 | case DVD_LU_SEND_ASF: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1707 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1708 | setup_report_key(&cgc, ai->lsasf.agid, 5); |
| 1709 | |
| 1710 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1711 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | |
| 1713 | ai->lsasf.asf = buf[7] & 1; |
| 1714 | break; |
| 1715 | |
| 1716 | /* LU data receive (LU changes state) */ |
| 1717 | case DVD_HOST_SEND_CHALLENGE: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1718 | cd_dbg(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | setup_send_key(&cgc, ai->hsc.agid, 1); |
| 1720 | buf[1] = 0xe; |
| 1721 | copy_chal(&buf[4], ai->hsc.chal); |
| 1722 | |
| 1723 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1724 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | |
| 1726 | ai->type = DVD_LU_SEND_KEY1; |
| 1727 | break; |
| 1728 | |
| 1729 | case DVD_HOST_SEND_KEY2: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1730 | cd_dbg(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | setup_send_key(&cgc, ai->hsk.agid, 3); |
| 1732 | buf[1] = 0xa; |
| 1733 | copy_key(&buf[4], ai->hsk.key); |
| 1734 | |
| 1735 | if ((ret = cdo->generic_packet(cdi, &cgc))) { |
| 1736 | ai->type = DVD_AUTH_FAILURE; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1737 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | } |
| 1739 | ai->type = DVD_AUTH_ESTABLISHED; |
| 1740 | break; |
| 1741 | |
| 1742 | /* Misc */ |
| 1743 | case DVD_INVALIDATE_AGID: |
| 1744 | cgc.quiet = 1; |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1745 | cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | setup_report_key(&cgc, ai->lsa.agid, 0x3f); |
| 1747 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1748 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | break; |
| 1750 | |
| 1751 | /* Get region settings */ |
| 1752 | case DVD_LU_SEND_RPC_STATE: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1753 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | setup_report_key(&cgc, 0, 8); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1755 | memset(&rpc_state, 0, sizeof(rpc_state_t)); |
| 1756 | cgc.buffer = (char *) &rpc_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | |
| 1758 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1759 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1761 | ai->lrpcs.type = rpc_state.type_code; |
| 1762 | ai->lrpcs.vra = rpc_state.vra; |
| 1763 | ai->lrpcs.ucca = rpc_state.ucca; |
| 1764 | ai->lrpcs.region_mask = rpc_state.region_mask; |
| 1765 | ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | break; |
| 1767 | |
| 1768 | /* Set region settings */ |
| 1769 | case DVD_HOST_SEND_RPC_STATE: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1770 | cd_dbg(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | setup_send_key(&cgc, 0, 6); |
| 1772 | buf[1] = 6; |
| 1773 | buf[4] = ai->hrpcs.pdrc; |
| 1774 | |
| 1775 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1776 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | break; |
| 1778 | |
| 1779 | default: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1780 | cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1781 | return -ENOTTY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | } |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1783 | |
| 1784 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | } |
| 1786 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1787 | static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s, |
| 1788 | struct packet_command *cgc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | { |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1790 | unsigned char buf[21], *base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | struct dvd_layer *layer; |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1792 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1793 | int ret, layer_num = s->physical.layer_num; |
| 1794 | |
| 1795 | if (layer_num >= DVD_LAYERS) |
| 1796 | return -EINVAL; |
| 1797 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1798 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
| 1799 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1800 | cgc->cmd[6] = layer_num; |
| 1801 | cgc->cmd[7] = s->type; |
| 1802 | cgc->cmd[9] = cgc->buflen & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | |
| 1804 | /* |
| 1805 | * refrain from reporting errors on non-existing layers (mainly) |
| 1806 | */ |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1807 | cgc->quiet = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1809 | ret = cdo->generic_packet(cdi, cgc); |
| 1810 | if (ret) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1811 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | |
| 1813 | base = &buf[4]; |
| 1814 | layer = &s->physical.layer[layer_num]; |
| 1815 | |
| 1816 | /* |
| 1817 | * place the data... really ugly, but at least we won't have to |
| 1818 | * worry about endianess in userspace. |
| 1819 | */ |
| 1820 | memset(layer, 0, sizeof(*layer)); |
| 1821 | layer->book_version = base[0] & 0xf; |
| 1822 | layer->book_type = base[0] >> 4; |
| 1823 | layer->min_rate = base[1] & 0xf; |
| 1824 | layer->disc_size = base[1] >> 4; |
| 1825 | layer->layer_type = base[2] & 0xf; |
| 1826 | layer->track_path = (base[2] >> 4) & 1; |
| 1827 | layer->nlayers = (base[2] >> 5) & 3; |
| 1828 | layer->track_density = base[3] & 0xf; |
| 1829 | layer->linear_density = base[3] >> 4; |
| 1830 | layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; |
| 1831 | layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; |
| 1832 | layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; |
| 1833 | layer->bca = base[16] >> 7; |
| 1834 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1835 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | } |
| 1837 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1838 | static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s, |
| 1839 | struct packet_command *cgc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1840 | { |
| 1841 | int ret; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1842 | u_char buf[8]; |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1843 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1845 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
| 1846 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1847 | cgc->cmd[6] = s->copyright.layer_num; |
| 1848 | cgc->cmd[7] = s->type; |
| 1849 | cgc->cmd[8] = cgc->buflen >> 8; |
| 1850 | cgc->cmd[9] = cgc->buflen & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1852 | ret = cdo->generic_packet(cdi, cgc); |
| 1853 | if (ret) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1854 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | |
| 1856 | s->copyright.cpst = buf[4]; |
| 1857 | s->copyright.rmi = buf[5]; |
| 1858 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 1859 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | } |
| 1861 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1862 | static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s, |
| 1863 | struct packet_command *cgc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | { |
| 1865 | int ret, size; |
| 1866 | u_char *buf; |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1867 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | |
| 1869 | size = sizeof(s->disckey.value) + 4; |
| 1870 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1871 | buf = kmalloc(size, GFP_KERNEL); |
| 1872 | if (!buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | return -ENOMEM; |
| 1874 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1875 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
| 1876 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1877 | cgc->cmd[7] = s->type; |
| 1878 | cgc->cmd[8] = size >> 8; |
| 1879 | cgc->cmd[9] = size & 0xff; |
| 1880 | cgc->cmd[10] = s->disckey.agid << 6; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1882 | ret = cdo->generic_packet(cdi, cgc); |
| 1883 | if (!ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); |
| 1885 | |
| 1886 | kfree(buf); |
| 1887 | return ret; |
| 1888 | } |
| 1889 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1890 | static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, |
| 1891 | struct packet_command *cgc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1892 | { |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1893 | int ret, size = 4 + 188; |
| 1894 | u_char *buf; |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1895 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1896 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1897 | buf = kmalloc(size, GFP_KERNEL); |
| 1898 | if (!buf) |
| 1899 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1900 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1901 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
| 1902 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1903 | cgc->cmd[7] = s->type; |
| 1904 | cgc->cmd[9] = cgc->buflen & 0xff; |
| 1905 | |
| 1906 | ret = cdo->generic_packet(cdi, cgc); |
| 1907 | if (ret) |
| 1908 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | |
| 1910 | s->bca.len = buf[0] << 8 | buf[1]; |
| 1911 | if (s->bca.len < 12 || s->bca.len > 188) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1912 | cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n", |
| 1913 | s->bca.len); |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1914 | ret = -EIO; |
| 1915 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | } |
| 1917 | memcpy(s->bca.value, &buf[4], s->bca.len); |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1918 | ret = 0; |
| 1919 | out: |
| 1920 | kfree(buf); |
| 1921 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | } |
| 1923 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1924 | static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, |
| 1925 | struct packet_command *cgc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1926 | { |
| 1927 | int ret = 0, size; |
| 1928 | u_char *buf; |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1929 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | |
| 1931 | size = sizeof(s->manufact.value) + 4; |
| 1932 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1933 | buf = kmalloc(size, GFP_KERNEL); |
| 1934 | if (!buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1935 | return -ENOMEM; |
| 1936 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1937 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
| 1938 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
| 1939 | cgc->cmd[7] = s->type; |
| 1940 | cgc->cmd[8] = size >> 8; |
| 1941 | cgc->cmd[9] = size & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1943 | ret = cdo->generic_packet(cdi, cgc); |
| 1944 | if (ret) |
| 1945 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | |
| 1947 | s->manufact.len = buf[0] << 8 | buf[1]; |
Andrew Morton | aec9f37 | 2011-08-02 12:43:50 +0200 | [diff] [blame] | 1948 | if (s->manufact.len < 0) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1949 | cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n", |
| 1950 | s->manufact.len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1951 | ret = -EIO; |
| 1952 | } else { |
Andrew Morton | aec9f37 | 2011-08-02 12:43:50 +0200 | [diff] [blame] | 1953 | if (s->manufact.len > 2048) { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1954 | cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d): truncating to 2048\n", |
| 1955 | s->manufact.len); |
Andrew Morton | aec9f37 | 2011-08-02 12:43:50 +0200 | [diff] [blame] | 1956 | s->manufact.len = 2048; |
| 1957 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1958 | memcpy(s->manufact.value, &buf[4], s->manufact.len); |
| 1959 | } |
| 1960 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1961 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1962 | kfree(buf); |
| 1963 | return ret; |
| 1964 | } |
| 1965 | |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1966 | static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s, |
| 1967 | struct packet_command *cgc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | { |
| 1969 | switch (s->type) { |
| 1970 | case DVD_STRUCT_PHYSICAL: |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1971 | return dvd_read_physical(cdi, s, cgc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1972 | |
| 1973 | case DVD_STRUCT_COPYRIGHT: |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1974 | return dvd_read_copyright(cdi, s, cgc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | |
| 1976 | case DVD_STRUCT_DISCKEY: |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1977 | return dvd_read_disckey(cdi, s, cgc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1978 | |
| 1979 | case DVD_STRUCT_BCA: |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1980 | return dvd_read_bca(cdi, s, cgc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | |
| 1982 | case DVD_STRUCT_MANUFACT: |
Marcin Slusarz | d194139 | 2008-11-16 19:06:37 +0100 | [diff] [blame] | 1983 | return dvd_read_manufact(cdi, s, cgc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | |
| 1985 | default: |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 1986 | cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", |
| 1987 | s->type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1988 | return -EINVAL; |
| 1989 | } |
| 1990 | } |
| 1991 | |
| 1992 | int cdrom_mode_sense(struct cdrom_device_info *cdi, |
| 1993 | struct packet_command *cgc, |
| 1994 | int page_code, int page_control) |
| 1995 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 1996 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | |
| 1998 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); |
| 1999 | |
| 2000 | cgc->cmd[0] = GPCMD_MODE_SENSE_10; |
| 2001 | cgc->cmd[2] = page_code | (page_control << 6); |
| 2002 | cgc->cmd[7] = cgc->buflen >> 8; |
| 2003 | cgc->cmd[8] = cgc->buflen & 0xff; |
| 2004 | cgc->data_direction = CGC_DATA_READ; |
| 2005 | return cdo->generic_packet(cdi, cgc); |
| 2006 | } |
| 2007 | |
| 2008 | int cdrom_mode_select(struct cdrom_device_info *cdi, |
| 2009 | struct packet_command *cgc) |
| 2010 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 2011 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | |
| 2013 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); |
| 2014 | memset(cgc->buffer, 0, 2); |
| 2015 | cgc->cmd[0] = GPCMD_MODE_SELECT_10; |
| 2016 | cgc->cmd[1] = 0x10; /* PF */ |
| 2017 | cgc->cmd[7] = cgc->buflen >> 8; |
| 2018 | cgc->cmd[8] = cgc->buflen & 0xff; |
| 2019 | cgc->data_direction = CGC_DATA_WRITE; |
| 2020 | return cdo->generic_packet(cdi, cgc); |
| 2021 | } |
| 2022 | |
| 2023 | static int cdrom_read_subchannel(struct cdrom_device_info *cdi, |
| 2024 | struct cdrom_subchnl *subchnl, int mcn) |
| 2025 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 2026 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2027 | struct packet_command cgc; |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 2028 | char buffer[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2029 | int ret; |
| 2030 | |
| 2031 | init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); |
| 2032 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; |
vchannaiah | bf294e8 | 2016-06-29 08:18:25 -0400 | [diff] [blame] | 2033 | cgc.cmd[1] = subchnl->cdsc_format;/* MSF or LBA addressing */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | cgc.cmd[2] = 0x40; /* request subQ data */ |
| 2035 | cgc.cmd[3] = mcn ? 2 : 1; |
| 2036 | cgc.cmd[8] = 16; |
| 2037 | |
| 2038 | if ((ret = cdo->generic_packet(cdi, &cgc))) |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 2039 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | |
| 2041 | subchnl->cdsc_audiostatus = cgc.buffer[1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; |
| 2043 | subchnl->cdsc_trk = cgc.buffer[6]; |
| 2044 | subchnl->cdsc_ind = cgc.buffer[7]; |
| 2045 | |
vchannaiah | bf294e8 | 2016-06-29 08:18:25 -0400 | [diff] [blame] | 2046 | if (subchnl->cdsc_format == CDROM_LBA) { |
| 2047 | subchnl->cdsc_absaddr.lba = ((cgc.buffer[8] << 24) | |
| 2048 | (cgc.buffer[9] << 16) | |
| 2049 | (cgc.buffer[10] << 8) | |
| 2050 | (cgc.buffer[11])); |
| 2051 | subchnl->cdsc_reladdr.lba = ((cgc.buffer[12] << 24) | |
| 2052 | (cgc.buffer[13] << 16) | |
| 2053 | (cgc.buffer[14] << 8) | |
| 2054 | (cgc.buffer[15])); |
| 2055 | } else { |
| 2056 | subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; |
| 2057 | subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; |
| 2058 | subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; |
| 2059 | subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; |
| 2060 | subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; |
| 2061 | subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; |
| 2062 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2063 | |
FUJITA Tomonori | fce5384 | 2008-07-04 09:33:01 +0200 | [diff] [blame] | 2064 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | } |
| 2066 | |
| 2067 | /* |
| 2068 | * Specific READ_10 interface |
| 2069 | */ |
| 2070 | static int cdrom_read_cd(struct cdrom_device_info *cdi, |
| 2071 | struct packet_command *cgc, int lba, |
| 2072 | int blocksize, int nblocks) |
| 2073 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 2074 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2075 | |
| 2076 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); |
| 2077 | cgc->cmd[0] = GPCMD_READ_10; |
| 2078 | cgc->cmd[2] = (lba >> 24) & 0xff; |
| 2079 | cgc->cmd[3] = (lba >> 16) & 0xff; |
| 2080 | cgc->cmd[4] = (lba >> 8) & 0xff; |
| 2081 | cgc->cmd[5] = lba & 0xff; |
| 2082 | cgc->cmd[6] = (nblocks >> 16) & 0xff; |
| 2083 | cgc->cmd[7] = (nblocks >> 8) & 0xff; |
| 2084 | cgc->cmd[8] = nblocks & 0xff; |
| 2085 | cgc->buflen = blocksize * nblocks; |
| 2086 | return cdo->generic_packet(cdi, cgc); |
| 2087 | } |
| 2088 | |
| 2089 | /* very generic interface for reading the various types of blocks */ |
| 2090 | static int cdrom_read_block(struct cdrom_device_info *cdi, |
| 2091 | struct packet_command *cgc, |
| 2092 | int lba, int nblocks, int format, int blksize) |
| 2093 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 2094 | const struct cdrom_device_ops *cdo = cdi->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | |
| 2096 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); |
| 2097 | cgc->cmd[0] = GPCMD_READ_CD; |
| 2098 | /* expected sector size - cdda,mode1,etc. */ |
| 2099 | cgc->cmd[1] = format << 2; |
| 2100 | /* starting address */ |
| 2101 | cgc->cmd[2] = (lba >> 24) & 0xff; |
| 2102 | cgc->cmd[3] = (lba >> 16) & 0xff; |
| 2103 | cgc->cmd[4] = (lba >> 8) & 0xff; |
| 2104 | cgc->cmd[5] = lba & 0xff; |
| 2105 | /* number of blocks */ |
| 2106 | cgc->cmd[6] = (nblocks >> 16) & 0xff; |
| 2107 | cgc->cmd[7] = (nblocks >> 8) & 0xff; |
| 2108 | cgc->cmd[8] = nblocks & 0xff; |
| 2109 | cgc->buflen = blksize * nblocks; |
| 2110 | |
| 2111 | /* set the header info returned */ |
| 2112 | switch (blksize) { |
| 2113 | case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; |
| 2114 | case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; |
| 2115 | case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; |
| 2116 | default : cgc->cmd[9] = 0x10; |
| 2117 | } |
| 2118 | |
| 2119 | return cdo->generic_packet(cdi, cgc); |
| 2120 | } |
| 2121 | |
| 2122 | static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, |
| 2123 | int lba, int nframes) |
| 2124 | { |
| 2125 | struct packet_command cgc; |
| 2126 | int ret = 0; |
| 2127 | int nr; |
| 2128 | |
| 2129 | cdi->last_sense = 0; |
| 2130 | |
| 2131 | memset(&cgc, 0, sizeof(cgc)); |
| 2132 | |
| 2133 | /* |
| 2134 | * start with will ra.nframes size, back down if alloc fails |
| 2135 | */ |
| 2136 | nr = nframes; |
| 2137 | do { |
| 2138 | cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); |
| 2139 | if (cgc.buffer) |
| 2140 | break; |
| 2141 | |
| 2142 | nr >>= 1; |
| 2143 | } while (nr); |
| 2144 | |
| 2145 | if (!nr) |
| 2146 | return -ENOMEM; |
| 2147 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | cgc.data_direction = CGC_DATA_READ; |
| 2149 | while (nframes > 0) { |
| 2150 | if (nr > nframes) |
| 2151 | nr = nframes; |
| 2152 | |
| 2153 | ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); |
| 2154 | if (ret) |
| 2155 | break; |
Dan Carpenter | 822bfa5 | 2012-02-06 10:20:45 +0100 | [diff] [blame] | 2156 | if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2157 | ret = -EFAULT; |
| 2158 | break; |
| 2159 | } |
| 2160 | ubuf += CD_FRAMESIZE_RAW * nr; |
| 2161 | nframes -= nr; |
| 2162 | lba += nr; |
| 2163 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2164 | kfree(cgc.buffer); |
| 2165 | return ret; |
| 2166 | } |
| 2167 | |
| 2168 | static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, |
| 2169 | int lba, int nframes) |
| 2170 | { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 2171 | struct request_queue *q = cdi->disk->queue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2172 | struct request *rq; |
Christoph Hellwig | 82ed4db | 2017-01-27 09:46:29 +0100 | [diff] [blame] | 2173 | struct scsi_request *req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | struct bio *bio; |
| 2175 | unsigned int len; |
| 2176 | int nr, ret = 0; |
| 2177 | |
| 2178 | if (!q) |
| 2179 | return -ENXIO; |
| 2180 | |
Bart Van Assche | 73d1770 | 2017-05-31 14:43:49 -0700 | [diff] [blame] | 2181 | if (!blk_queue_scsi_passthrough(q)) { |
| 2182 | WARN_ONCE(true, |
| 2183 | "Attempt read CDDA info through a non-SCSI queue\n"); |
| 2184 | return -EINVAL; |
| 2185 | } |
| 2186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | cdi->last_sense = 0; |
| 2188 | |
| 2189 | while (nframes) { |
| 2190 | nr = nframes; |
| 2191 | if (cdi->cdda_method == CDDA_BPC_SINGLE) |
| 2192 | nr = 1; |
Martin K. Petersen | ae03bf6 | 2009-05-22 17:17:50 -0400 | [diff] [blame] | 2193 | if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9)) |
| 2194 | nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2195 | |
| 2196 | len = nr * CD_FRAMESIZE_RAW; |
| 2197 | |
Christoph Hellwig | aebf526 | 2017-01-31 16:57:31 +0100 | [diff] [blame] | 2198 | rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL); |
Joe Lawrence | a492f07 | 2014-08-28 08:15:21 -0600 | [diff] [blame] | 2199 | if (IS_ERR(rq)) { |
| 2200 | ret = PTR_ERR(rq); |
Jens Axboe | dd1cab9 | 2005-06-20 14:06:01 +0200 | [diff] [blame] | 2201 | break; |
Alan D. Brunelle | febd7a5 | 2008-12-09 15:52:15 +0100 | [diff] [blame] | 2202 | } |
Christoph Hellwig | 82ed4db | 2017-01-27 09:46:29 +0100 | [diff] [blame] | 2203 | req = scsi_req(rq); |
Alan D. Brunelle | febd7a5 | 2008-12-09 15:52:15 +0100 | [diff] [blame] | 2204 | |
| 2205 | ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL); |
| 2206 | if (ret) { |
| 2207 | blk_put_request(rq); |
| 2208 | break; |
| 2209 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | |
Christoph Hellwig | 82ed4db | 2017-01-27 09:46:29 +0100 | [diff] [blame] | 2211 | req->cmd[0] = GPCMD_READ_CD; |
| 2212 | req->cmd[1] = 1 << 2; |
| 2213 | req->cmd[2] = (lba >> 24) & 0xff; |
| 2214 | req->cmd[3] = (lba >> 16) & 0xff; |
| 2215 | req->cmd[4] = (lba >> 8) & 0xff; |
| 2216 | req->cmd[5] = lba & 0xff; |
| 2217 | req->cmd[6] = (nr >> 16) & 0xff; |
| 2218 | req->cmd[7] = (nr >> 8) & 0xff; |
| 2219 | req->cmd[8] = nr & 0xff; |
| 2220 | req->cmd[9] = 0xf8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2221 | |
Christoph Hellwig | 82ed4db | 2017-01-27 09:46:29 +0100 | [diff] [blame] | 2222 | req->cmd_len = 12; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2223 | rq->timeout = 60 * HZ; |
| 2224 | bio = rq->bio; |
| 2225 | |
Christoph Hellwig | b7819b9 | 2017-04-20 16:02:55 +0200 | [diff] [blame] | 2226 | blk_execute_rq(q, cdi->disk, rq, 0); |
Christoph Hellwig | 17d5363 | 2017-04-20 16:03:01 +0200 | [diff] [blame] | 2227 | if (scsi_req(rq)->result) { |
Christoph Hellwig | 82ed4db | 2017-01-27 09:46:29 +0100 | [diff] [blame] | 2228 | struct request_sense *s = req->sense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2229 | ret = -EIO; |
| 2230 | cdi->last_sense = s->sense_key; |
| 2231 | } |
| 2232 | |
Jens Axboe | 8e5cfc4 | 2006-12-19 11:12:46 +0100 | [diff] [blame] | 2233 | if (blk_rq_unmap_user(bio)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2234 | ret = -EFAULT; |
Alan D. Brunelle | febd7a5 | 2008-12-09 15:52:15 +0100 | [diff] [blame] | 2235 | blk_put_request(rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | |
| 2237 | if (ret) |
| 2238 | break; |
| 2239 | |
| 2240 | nframes -= nr; |
| 2241 | lba += nr; |
| 2242 | ubuf += len; |
| 2243 | } |
| 2244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2245 | return ret; |
| 2246 | } |
| 2247 | |
| 2248 | static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, |
| 2249 | int lba, int nframes) |
| 2250 | { |
| 2251 | int ret; |
| 2252 | |
| 2253 | if (cdi->cdda_method == CDDA_OLD) |
| 2254 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); |
| 2255 | |
| 2256 | retry: |
| 2257 | /* |
| 2258 | * for anything else than success and io error, we need to retry |
| 2259 | */ |
| 2260 | ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); |
| 2261 | if (!ret || ret != -EIO) |
| 2262 | return ret; |
| 2263 | |
| 2264 | /* |
| 2265 | * I've seen drives get sense 4/8/3 udma crc errors on multi |
| 2266 | * frame dma, so drop to single frame dma if we need to |
| 2267 | */ |
| 2268 | if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 2269 | pr_info("dropping to single frame dma\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2270 | cdi->cdda_method = CDDA_BPC_SINGLE; |
| 2271 | goto retry; |
| 2272 | } |
| 2273 | |
| 2274 | /* |
| 2275 | * so we have an io error of some sort with multi frame dma. if the |
| 2276 | * condition wasn't a hardware error |
| 2277 | * problems, not for any error |
| 2278 | */ |
| 2279 | if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) |
| 2280 | return ret; |
| 2281 | |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 2282 | pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2283 | cdi->cdda_method = CDDA_OLD; |
| 2284 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); |
| 2285 | } |
| 2286 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2287 | static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, |
| 2288 | void __user *argp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | { |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2290 | struct cdrom_multisession ms_info; |
| 2291 | u8 requested_format; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | int ret; |
| 2293 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2294 | cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2295 | |
| 2296 | if (!(cdi->ops->capability & CDC_MULTI_SESSION)) |
| 2297 | return -ENOSYS; |
| 2298 | |
| 2299 | if (copy_from_user(&ms_info, argp, sizeof(ms_info))) |
| 2300 | return -EFAULT; |
| 2301 | |
| 2302 | requested_format = ms_info.addr_format; |
| 2303 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) |
| 2304 | return -EINVAL; |
| 2305 | ms_info.addr_format = CDROM_LBA; |
| 2306 | |
| 2307 | ret = cdi->ops->get_last_session(cdi, &ms_info); |
| 2308 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2309 | return ret; |
| 2310 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2311 | sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); |
| 2312 | |
| 2313 | if (copy_to_user(argp, &ms_info, sizeof(ms_info))) |
| 2314 | return -EFAULT; |
| 2315 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2316 | cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2317 | return 0; |
| 2318 | } |
| 2319 | |
| 2320 | static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) |
| 2321 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2322 | cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2323 | |
| 2324 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
| 2325 | return -ENOSYS; |
Paolo Bonzini | cdccaa9 | 2012-02-08 20:03:14 +0100 | [diff] [blame] | 2326 | if (cdi->use_count != 1 || cdi->keeplocked) |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2327 | return -EBUSY; |
| 2328 | if (CDROM_CAN(CDC_LOCK)) { |
| 2329 | int ret = cdi->ops->lock_door(cdi, 0); |
| 2330 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | return ret; |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2332 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2334 | return cdi->ops->tray_move(cdi, 1); |
| 2335 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2337 | static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) |
| 2338 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2339 | cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2340 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2341 | if (!CDROM_CAN(CDC_CLOSE_TRAY)) |
| 2342 | return -ENOSYS; |
| 2343 | return cdi->ops->tray_move(cdi, 0); |
| 2344 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2346 | static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, |
| 2347 | unsigned long arg) |
| 2348 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2349 | cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2350 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2351 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
| 2352 | return -ENOSYS; |
Paolo Bonzini | cdccaa9 | 2012-02-08 20:03:14 +0100 | [diff] [blame] | 2353 | if (cdi->keeplocked) |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2354 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2355 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2356 | cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); |
| 2357 | if (arg) |
| 2358 | cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; |
| 2359 | return 0; |
| 2360 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2361 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2362 | static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, |
| 2363 | unsigned long arg) |
| 2364 | { |
| 2365 | struct cdrom_changer_info *info; |
| 2366 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2367 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2368 | cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2369 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2370 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
| 2371 | return -ENOSYS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2372 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2373 | /* cannot select disc or select current disc */ |
| 2374 | if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) |
| 2375 | return media_changed(cdi, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2377 | if ((unsigned int)arg >= cdi->capacity) |
| 2378 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2379 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2380 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 2381 | if (!info) |
| 2382 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2384 | ret = cdrom_read_mech_status(cdi, info); |
| 2385 | if (!ret) |
| 2386 | ret = info->slots[arg].change; |
| 2387 | kfree(info); |
| 2388 | return ret; |
| 2389 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2390 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2391 | static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, |
| 2392 | unsigned long arg) |
| 2393 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2394 | cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2395 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2396 | /* |
| 2397 | * Options need to be in sync with capability. |
| 2398 | * Too late for that, so we have to check each one separately. |
| 2399 | */ |
| 2400 | switch (arg) { |
| 2401 | case CDO_USE_FFLAGS: |
| 2402 | case CDO_CHECK_TYPE: |
| 2403 | break; |
| 2404 | case CDO_LOCK: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2405 | if (!CDROM_CAN(CDC_LOCK)) |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2406 | return -ENOSYS; |
| 2407 | break; |
| 2408 | case 0: |
| 2409 | return cdi->options; |
| 2410 | /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ |
| 2411 | default: |
| 2412 | if (!CDROM_CAN(arg)) |
| 2413 | return -ENOSYS; |
| 2414 | } |
| 2415 | cdi->options |= (int) arg; |
| 2416 | return cdi->options; |
| 2417 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2418 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2419 | static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, |
| 2420 | unsigned long arg) |
| 2421 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2422 | cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2423 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2424 | cdi->options &= ~(int) arg; |
| 2425 | return cdi->options; |
| 2426 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2427 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2428 | static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, |
| 2429 | unsigned long arg) |
| 2430 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2431 | cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2432 | |
| 2433 | if (!CDROM_CAN(CDC_SELECT_SPEED)) |
| 2434 | return -ENOSYS; |
| 2435 | return cdi->ops->select_speed(cdi, arg); |
| 2436 | } |
| 2437 | |
| 2438 | static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, |
| 2439 | unsigned long arg) |
| 2440 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2441 | cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2442 | |
| 2443 | if (!CDROM_CAN(CDC_SELECT_DISC)) |
| 2444 | return -ENOSYS; |
| 2445 | |
| 2446 | if (arg != CDSL_CURRENT && arg != CDSL_NONE) { |
| 2447 | if ((int)arg >= cdi->capacity) |
| 2448 | return -EINVAL; |
| 2449 | } |
| 2450 | |
| 2451 | /* |
| 2452 | * ->select_disc is a hook to allow a driver-specific way of |
| 2453 | * seleting disc. However, since there is no equivalent hook for |
| 2454 | * cdrom_slot_status this may not actually be useful... |
| 2455 | */ |
| 2456 | if (cdi->ops->select_disc) |
| 2457 | return cdi->ops->select_disc(cdi, arg); |
| 2458 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2459 | cd_dbg(CD_CHANGER, "Using generic cdrom_select_disc()\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2460 | return cdrom_select_disc(cdi, arg); |
| 2461 | } |
| 2462 | |
| 2463 | static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, |
| 2464 | struct block_device *bdev) |
| 2465 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2466 | cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2467 | |
| 2468 | if (!capable(CAP_SYS_ADMIN)) |
| 2469 | return -EACCES; |
| 2470 | if (!CDROM_CAN(CDC_RESET)) |
| 2471 | return -ENOSYS; |
Peter Zijlstra | f98393a | 2007-05-06 14:49:54 -0700 | [diff] [blame] | 2472 | invalidate_bdev(bdev); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2473 | return cdi->ops->reset(cdi); |
| 2474 | } |
| 2475 | |
| 2476 | static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, |
| 2477 | unsigned long arg) |
| 2478 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2479 | cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2480 | |
| 2481 | if (!CDROM_CAN(CDC_LOCK)) |
| 2482 | return -EDRIVE_CANT_DO_THIS; |
| 2483 | |
Paolo Bonzini | cdccaa9 | 2012-02-08 20:03:14 +0100 | [diff] [blame] | 2484 | cdi->keeplocked = arg ? 1 : 0; |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2485 | |
| 2486 | /* |
| 2487 | * Don't unlock the door on multiple opens by default, but allow |
| 2488 | * root to do so. |
| 2489 | */ |
| 2490 | if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) |
| 2491 | return -EBUSY; |
| 2492 | return cdi->ops->lock_door(cdi, arg); |
| 2493 | } |
| 2494 | |
| 2495 | static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, |
| 2496 | unsigned long arg) |
| 2497 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2498 | cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2499 | |
| 2500 | if (!capable(CAP_SYS_ADMIN)) |
| 2501 | return -EACCES; |
| 2502 | debug = arg ? 1 : 0; |
| 2503 | return debug; |
| 2504 | } |
| 2505 | |
| 2506 | static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) |
| 2507 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2508 | cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2509 | return (cdi->ops->capability & ~cdi->mask); |
| 2510 | } |
| 2511 | |
| 2512 | /* |
| 2513 | * The following function is implemented, although very few audio |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2514 | * discs give Universal Product Code information, which should just be |
| 2515 | * the Medium Catalog Number on the box. Note, that the way the code |
| 2516 | * is written on the CD is /not/ uniform across all discs! |
| 2517 | */ |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2518 | static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, |
| 2519 | void __user *argp) |
| 2520 | { |
| 2521 | struct cdrom_mcn mcn; |
| 2522 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2523 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2524 | cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2525 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2526 | if (!(cdi->ops->capability & CDC_MCN)) |
| 2527 | return -ENOSYS; |
| 2528 | ret = cdi->ops->get_mcn(cdi, &mcn); |
| 2529 | if (ret) |
| 2530 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2531 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2532 | if (copy_to_user(argp, &mcn, sizeof(mcn))) |
| 2533 | return -EFAULT; |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2534 | cd_dbg(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2535 | return 0; |
| 2536 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2537 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2538 | static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, |
| 2539 | unsigned long arg) |
| 2540 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2541 | cd_dbg(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2542 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2543 | if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) |
| 2544 | return -ENOSYS; |
| 2545 | if (!CDROM_CAN(CDC_SELECT_DISC) || |
| 2546 | (arg == CDSL_CURRENT || arg == CDSL_NONE)) |
| 2547 | return cdi->ops->drive_status(cdi, CDSL_CURRENT); |
| 2548 | if (((int)arg >= cdi->capacity)) |
| 2549 | return -EINVAL; |
| 2550 | return cdrom_slot_status(cdi, arg); |
| 2551 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2552 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2553 | /* |
| 2554 | * Ok, this is where problems start. The current interface for the |
| 2555 | * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2556 | * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2557 | * is often the case, it is also very common for CDs to have some tracks |
| 2558 | * with data, and some tracks with audio. Just because I feel like it, |
| 2559 | * I declare the following to be the best way to cope. If the CD has ANY |
| 2560 | * data tracks on it, it will be returned as a data CD. If it has any XA |
| 2561 | * tracks, I will return it as that. Now I could simplify this interface |
| 2562 | * by combining these returns with the above, but this more clearly |
| 2563 | * demonstrates the problem with the current interface. Too bad this |
| 2564 | * wasn't designed to use bitmasks... -Erik |
| 2565 | * |
| 2566 | * Well, now we have the option CDS_MIXED: a mixed-type CD. |
| 2567 | * User level programmers might feel the ioctl is not very useful. |
| 2568 | * ---david |
| 2569 | */ |
| 2570 | static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) |
| 2571 | { |
| 2572 | tracktype tracks; |
| 2573 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2574 | cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2575 | |
| 2576 | cdrom_count_tracks(cdi, &tracks); |
| 2577 | if (tracks.error) |
| 2578 | return tracks.error; |
| 2579 | |
| 2580 | /* Policy mode on */ |
| 2581 | if (tracks.audio > 0) { |
| 2582 | if (!tracks.data && !tracks.cdi && !tracks.xa) |
| 2583 | return CDS_AUDIO; |
| 2584 | else |
| 2585 | return CDS_MIXED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2586 | } |
| 2587 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2588 | if (tracks.cdi > 0) |
| 2589 | return CDS_XA_2_2; |
| 2590 | if (tracks.xa > 0) |
| 2591 | return CDS_XA_2_1; |
| 2592 | if (tracks.data > 0) |
| 2593 | return CDS_DATA_1; |
| 2594 | /* Policy mode off */ |
| 2595 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2596 | cd_dbg(CD_WARNING, "This disc doesn't have any tracks I recognize!\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2597 | return CDS_NO_INFO; |
| 2598 | } |
| 2599 | |
| 2600 | static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) |
| 2601 | { |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2602 | cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2603 | return cdi->capacity; |
| 2604 | } |
| 2605 | |
| 2606 | static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, |
| 2607 | void __user *argp) |
| 2608 | { |
| 2609 | struct cdrom_subchnl q; |
| 2610 | u8 requested, back; |
| 2611 | int ret; |
| 2612 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2613 | /* cd_dbg(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2614 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2615 | if (copy_from_user(&q, argp, sizeof(q))) |
| 2616 | return -EFAULT; |
| 2617 | |
| 2618 | requested = q.cdsc_format; |
| 2619 | if (requested != CDROM_MSF && requested != CDROM_LBA) |
| 2620 | return -EINVAL; |
| 2621 | q.cdsc_format = CDROM_MSF; |
| 2622 | |
| 2623 | ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); |
| 2624 | if (ret) |
| 2625 | return ret; |
| 2626 | |
| 2627 | back = q.cdsc_format; /* local copy */ |
| 2628 | sanitize_format(&q.cdsc_absaddr, &back, requested); |
| 2629 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); |
| 2630 | |
| 2631 | if (copy_to_user(argp, &q, sizeof(q))) |
| 2632 | return -EFAULT; |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2633 | /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2634 | return 0; |
| 2635 | } |
| 2636 | |
| 2637 | static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, |
| 2638 | void __user *argp) |
| 2639 | { |
| 2640 | struct cdrom_tochdr header; |
| 2641 | int ret; |
| 2642 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2643 | /* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2644 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2645 | if (copy_from_user(&header, argp, sizeof(header))) |
| 2646 | return -EFAULT; |
| 2647 | |
| 2648 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); |
| 2649 | if (ret) |
| 2650 | return ret; |
| 2651 | |
| 2652 | if (copy_to_user(argp, &header, sizeof(header))) |
| 2653 | return -EFAULT; |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2654 | /* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2655 | return 0; |
| 2656 | } |
| 2657 | |
| 2658 | static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, |
| 2659 | void __user *argp) |
| 2660 | { |
| 2661 | struct cdrom_tocentry entry; |
| 2662 | u8 requested_format; |
| 2663 | int ret; |
| 2664 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2665 | /* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2666 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2667 | if (copy_from_user(&entry, argp, sizeof(entry))) |
| 2668 | return -EFAULT; |
| 2669 | |
| 2670 | requested_format = entry.cdte_format; |
| 2671 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) |
| 2672 | return -EINVAL; |
| 2673 | /* make interface to low-level uniform */ |
| 2674 | entry.cdte_format = CDROM_MSF; |
| 2675 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry); |
| 2676 | if (ret) |
| 2677 | return ret; |
| 2678 | sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); |
| 2679 | |
| 2680 | if (copy_to_user(argp, &entry, sizeof(entry))) |
| 2681 | return -EFAULT; |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2682 | /* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2683 | return 0; |
| 2684 | } |
| 2685 | |
| 2686 | static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, |
| 2687 | void __user *argp) |
| 2688 | { |
| 2689 | struct cdrom_msf msf; |
| 2690 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2691 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2692 | |
| 2693 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2694 | return -ENOSYS; |
| 2695 | if (copy_from_user(&msf, argp, sizeof(msf))) |
| 2696 | return -EFAULT; |
| 2697 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); |
| 2698 | } |
| 2699 | |
| 2700 | static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, |
| 2701 | void __user *argp) |
| 2702 | { |
| 2703 | struct cdrom_ti ti; |
| 2704 | int ret; |
| 2705 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2706 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2707 | |
| 2708 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2709 | return -ENOSYS; |
| 2710 | if (copy_from_user(&ti, argp, sizeof(ti))) |
| 2711 | return -EFAULT; |
| 2712 | |
| 2713 | ret = check_for_audio_disc(cdi, cdi->ops); |
| 2714 | if (ret) |
| 2715 | return ret; |
| 2716 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); |
| 2717 | } |
| 2718 | static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, |
| 2719 | void __user *argp) |
| 2720 | { |
| 2721 | struct cdrom_volctrl volume; |
| 2722 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2723 | cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2724 | |
| 2725 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2726 | return -ENOSYS; |
| 2727 | if (copy_from_user(&volume, argp, sizeof(volume))) |
| 2728 | return -EFAULT; |
| 2729 | return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); |
| 2730 | } |
| 2731 | |
| 2732 | static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, |
| 2733 | void __user *argp) |
| 2734 | { |
| 2735 | struct cdrom_volctrl volume; |
| 2736 | int ret; |
| 2737 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2738 | cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2739 | |
| 2740 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2741 | return -ENOSYS; |
| 2742 | |
| 2743 | ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); |
| 2744 | if (ret) |
| 2745 | return ret; |
| 2746 | |
| 2747 | if (copy_to_user(argp, &volume, sizeof(volume))) |
| 2748 | return -EFAULT; |
| 2749 | return 0; |
| 2750 | } |
| 2751 | |
| 2752 | static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, |
| 2753 | unsigned int cmd) |
| 2754 | { |
| 2755 | int ret; |
| 2756 | |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 2757 | cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 2758 | |
| 2759 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
| 2760 | return -ENOSYS; |
| 2761 | ret = check_for_audio_disc(cdi, cdi->ops); |
| 2762 | if (ret) |
| 2763 | return ret; |
| 2764 | return cdi->ops->audio_ioctl(cdi, cmd, NULL); |
| 2765 | } |
| 2766 | |
| 2767 | /* |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 2768 | * Required when we need to use READ_10 to issue other than 2048 block |
| 2769 | * reads |
| 2770 | */ |
| 2771 | static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) |
| 2772 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 2773 | const struct cdrom_device_ops *cdo = cdi->ops; |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 2774 | struct packet_command cgc; |
| 2775 | struct modesel_head mh; |
| 2776 | |
| 2777 | memset(&mh, 0, sizeof(mh)); |
| 2778 | mh.block_desc_length = 0x08; |
| 2779 | mh.block_length_med = (size >> 8) & 0xff; |
| 2780 | mh.block_length_lo = size & 0xff; |
| 2781 | |
| 2782 | memset(&cgc, 0, sizeof(cgc)); |
| 2783 | cgc.cmd[0] = 0x15; |
| 2784 | cgc.cmd[1] = 1 << 4; |
| 2785 | cgc.cmd[4] = 12; |
| 2786 | cgc.buflen = sizeof(mh); |
| 2787 | cgc.buffer = (char *) &mh; |
| 2788 | cgc.data_direction = CGC_DATA_WRITE; |
| 2789 | mh.block_desc_length = 0x08; |
| 2790 | mh.block_length_med = (size >> 8) & 0xff; |
| 2791 | mh.block_length_lo = size & 0xff; |
| 2792 | |
| 2793 | return cdo->generic_packet(cdi, &cgc); |
| 2794 | } |
| 2795 | |
Joe Perches | e1e60fd | 2014-05-04 17:05:09 -0700 | [diff] [blame] | 2796 | static int cdrom_get_track_info(struct cdrom_device_info *cdi, |
| 2797 | __u16 track, __u8 type, track_information *ti) |
| 2798 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 2799 | const struct cdrom_device_ops *cdo = cdi->ops; |
Joe Perches | e1e60fd | 2014-05-04 17:05:09 -0700 | [diff] [blame] | 2800 | struct packet_command cgc; |
| 2801 | int ret, buflen; |
| 2802 | |
| 2803 | init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); |
| 2804 | cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; |
| 2805 | cgc.cmd[1] = type & 3; |
| 2806 | cgc.cmd[4] = (track & 0xff00) >> 8; |
| 2807 | cgc.cmd[5] = track & 0xff; |
| 2808 | cgc.cmd[8] = 8; |
| 2809 | cgc.quiet = 1; |
| 2810 | |
| 2811 | ret = cdo->generic_packet(cdi, &cgc); |
| 2812 | if (ret) |
| 2813 | return ret; |
| 2814 | |
| 2815 | buflen = be16_to_cpu(ti->track_information_length) + |
| 2816 | sizeof(ti->track_information_length); |
| 2817 | |
| 2818 | if (buflen > sizeof(track_information)) |
| 2819 | buflen = sizeof(track_information); |
| 2820 | |
| 2821 | cgc.cmd[8] = cgc.buflen = buflen; |
| 2822 | ret = cdo->generic_packet(cdi, &cgc); |
| 2823 | if (ret) |
| 2824 | return ret; |
| 2825 | |
| 2826 | /* return actual fill size */ |
| 2827 | return buflen; |
| 2828 | } |
| 2829 | |
| 2830 | /* return the last written block on the CD-R media. this is for the udf |
| 2831 | file system. */ |
| 2832 | int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) |
| 2833 | { |
| 2834 | struct cdrom_tocentry toc; |
| 2835 | disc_information di; |
| 2836 | track_information ti; |
| 2837 | __u32 last_track; |
| 2838 | int ret = -1, ti_size; |
| 2839 | |
| 2840 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) |
| 2841 | goto use_toc; |
| 2842 | |
| 2843 | ret = cdrom_get_disc_info(cdi, &di); |
| 2844 | if (ret < (int)(offsetof(typeof(di), last_track_lsb) |
| 2845 | + sizeof(di.last_track_lsb))) |
| 2846 | goto use_toc; |
| 2847 | |
| 2848 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ |
| 2849 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; |
| 2850 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
| 2851 | if (ti_size < (int)offsetof(typeof(ti), track_start)) |
| 2852 | goto use_toc; |
| 2853 | |
| 2854 | /* if this track is blank, try the previous. */ |
| 2855 | if (ti.blank) { |
| 2856 | if (last_track == 1) |
| 2857 | goto use_toc; |
| 2858 | last_track--; |
| 2859 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
| 2860 | } |
| 2861 | |
| 2862 | if (ti_size < (int)(offsetof(typeof(ti), track_size) |
| 2863 | + sizeof(ti.track_size))) |
| 2864 | goto use_toc; |
| 2865 | |
| 2866 | /* if last recorded field is valid, return it. */ |
| 2867 | if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) |
| 2868 | + sizeof(ti.last_rec_address))) { |
| 2869 | *last_written = be32_to_cpu(ti.last_rec_address); |
| 2870 | } else { |
| 2871 | /* make it up instead */ |
| 2872 | *last_written = be32_to_cpu(ti.track_start) + |
| 2873 | be32_to_cpu(ti.track_size); |
| 2874 | if (ti.free_blocks) |
| 2875 | *last_written -= (be32_to_cpu(ti.free_blocks) + 7); |
| 2876 | } |
| 2877 | return 0; |
| 2878 | |
| 2879 | /* this is where we end up if the drive either can't do a |
| 2880 | GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if |
| 2881 | it doesn't give enough information or fails. then we return |
| 2882 | the toc contents. */ |
| 2883 | use_toc: |
| 2884 | toc.cdte_format = CDROM_MSF; |
| 2885 | toc.cdte_track = CDROM_LEADOUT; |
| 2886 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) |
| 2887 | return ret; |
| 2888 | sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); |
| 2889 | *last_written = toc.cdte_addr.lba; |
| 2890 | return 0; |
| 2891 | } |
| 2892 | |
Joe Perches | dac1c5c | 2014-05-04 17:05:10 -0700 | [diff] [blame] | 2893 | /* return the next writable block. also for udf file system. */ |
| 2894 | static int cdrom_get_next_writable(struct cdrom_device_info *cdi, |
| 2895 | long *next_writable) |
| 2896 | { |
| 2897 | disc_information di; |
| 2898 | track_information ti; |
| 2899 | __u16 last_track; |
| 2900 | int ret, ti_size; |
| 2901 | |
| 2902 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) |
| 2903 | goto use_last_written; |
| 2904 | |
| 2905 | ret = cdrom_get_disc_info(cdi, &di); |
| 2906 | if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) |
| 2907 | + sizeof(di.last_track_lsb)) |
| 2908 | goto use_last_written; |
| 2909 | |
| 2910 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ |
| 2911 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; |
| 2912 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
| 2913 | if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) |
| 2914 | goto use_last_written; |
| 2915 | |
| 2916 | /* if this track is blank, try the previous. */ |
| 2917 | if (ti.blank) { |
| 2918 | if (last_track == 1) |
| 2919 | goto use_last_written; |
| 2920 | last_track--; |
| 2921 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
| 2922 | if (ti_size < 0) |
| 2923 | goto use_last_written; |
| 2924 | } |
| 2925 | |
| 2926 | /* if next recordable address field is valid, use it. */ |
| 2927 | if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) |
| 2928 | + sizeof(ti.next_writable)) { |
| 2929 | *next_writable = be32_to_cpu(ti.next_writable); |
| 2930 | return 0; |
| 2931 | } |
| 2932 | |
| 2933 | use_last_written: |
| 2934 | ret = cdrom_get_last_written(cdi, next_writable); |
| 2935 | if (ret) { |
| 2936 | *next_writable = 0; |
| 2937 | return ret; |
| 2938 | } else { |
| 2939 | *next_writable += 7; |
| 2940 | return 0; |
| 2941 | } |
| 2942 | } |
| 2943 | |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 2944 | static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, |
| 2945 | void __user *arg, |
| 2946 | struct packet_command *cgc, |
| 2947 | int cmd) |
| 2948 | { |
| 2949 | struct request_sense sense; |
| 2950 | struct cdrom_msf msf; |
| 2951 | int blocksize = 0, format = 0, lba; |
| 2952 | int ret; |
| 2953 | |
| 2954 | switch (cmd) { |
| 2955 | case CDROMREADRAW: |
| 2956 | blocksize = CD_FRAMESIZE_RAW; |
| 2957 | break; |
| 2958 | case CDROMREADMODE1: |
| 2959 | blocksize = CD_FRAMESIZE; |
| 2960 | format = 2; |
| 2961 | break; |
| 2962 | case CDROMREADMODE2: |
| 2963 | blocksize = CD_FRAMESIZE_RAW0; |
| 2964 | break; |
| 2965 | } |
| 2966 | if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) |
| 2967 | return -EFAULT; |
| 2968 | lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0); |
| 2969 | /* FIXME: we need upper bound checking, too!! */ |
| 2970 | if (lba < 0) |
| 2971 | return -EINVAL; |
| 2972 | |
| 2973 | cgc->buffer = kzalloc(blocksize, GFP_KERNEL); |
| 2974 | if (cgc->buffer == NULL) |
| 2975 | return -ENOMEM; |
| 2976 | |
| 2977 | memset(&sense, 0, sizeof(sense)); |
| 2978 | cgc->sense = &sense; |
| 2979 | cgc->data_direction = CGC_DATA_READ; |
| 2980 | ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize); |
| 2981 | if (ret && sense.sense_key == 0x05 && |
| 2982 | sense.asc == 0x20 && |
| 2983 | sense.ascq == 0x00) { |
| 2984 | /* |
| 2985 | * SCSI-II devices are not required to support |
| 2986 | * READ_CD, so let's try switching block size |
| 2987 | */ |
| 2988 | /* FIXME: switch back again... */ |
| 2989 | ret = cdrom_switch_blocksize(cdi, blocksize); |
| 2990 | if (ret) |
| 2991 | goto out; |
| 2992 | cgc->sense = NULL; |
| 2993 | ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1); |
| 2994 | ret |= cdrom_switch_blocksize(cdi, blocksize); |
| 2995 | } |
| 2996 | if (!ret && copy_to_user(arg, cgc->buffer, blocksize)) |
| 2997 | ret = -EFAULT; |
| 2998 | out: |
| 2999 | kfree(cgc->buffer); |
| 3000 | return ret; |
| 3001 | } |
| 3002 | |
| 3003 | static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, |
| 3004 | void __user *arg) |
| 3005 | { |
| 3006 | struct cdrom_read_audio ra; |
| 3007 | int lba; |
| 3008 | |
| 3009 | if (copy_from_user(&ra, (struct cdrom_read_audio __user *)arg, |
| 3010 | sizeof(ra))) |
| 3011 | return -EFAULT; |
| 3012 | |
| 3013 | if (ra.addr_format == CDROM_MSF) |
| 3014 | lba = msf_to_lba(ra.addr.msf.minute, |
| 3015 | ra.addr.msf.second, |
| 3016 | ra.addr.msf.frame); |
| 3017 | else if (ra.addr_format == CDROM_LBA) |
| 3018 | lba = ra.addr.lba; |
| 3019 | else |
| 3020 | return -EINVAL; |
| 3021 | |
| 3022 | /* FIXME: we need upper bound checking, too!! */ |
| 3023 | if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) |
| 3024 | return -EINVAL; |
| 3025 | |
| 3026 | return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); |
| 3027 | } |
| 3028 | |
| 3029 | static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi, |
| 3030 | void __user *arg) |
| 3031 | { |
| 3032 | int ret; |
| 3033 | struct cdrom_subchnl q; |
| 3034 | u_char requested, back; |
| 3035 | if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q))) |
| 3036 | return -EFAULT; |
| 3037 | requested = q.cdsc_format; |
| 3038 | if (!((requested == CDROM_MSF) || |
| 3039 | (requested == CDROM_LBA))) |
| 3040 | return -EINVAL; |
vchannaiah | bf294e8 | 2016-06-29 08:18:25 -0400 | [diff] [blame] | 3041 | |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 3042 | ret = cdrom_read_subchannel(cdi, &q, 0); |
| 3043 | if (ret) |
| 3044 | return ret; |
| 3045 | back = q.cdsc_format; /* local copy */ |
| 3046 | sanitize_format(&q.cdsc_absaddr, &back, requested); |
| 3047 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); |
| 3048 | if (copy_to_user((struct cdrom_subchnl __user *)arg, &q, sizeof(q))) |
| 3049 | return -EFAULT; |
| 3050 | /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
| 3051 | return 0; |
| 3052 | } |
| 3053 | |
| 3054 | static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi, |
| 3055 | void __user *arg, |
| 3056 | struct packet_command *cgc) |
| 3057 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 3058 | const struct cdrom_device_ops *cdo = cdi->ops; |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 3059 | struct cdrom_msf msf; |
| 3060 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
| 3061 | if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) |
| 3062 | return -EFAULT; |
| 3063 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
| 3064 | cgc->cmd[3] = msf.cdmsf_min0; |
| 3065 | cgc->cmd[4] = msf.cdmsf_sec0; |
| 3066 | cgc->cmd[5] = msf.cdmsf_frame0; |
| 3067 | cgc->cmd[6] = msf.cdmsf_min1; |
| 3068 | cgc->cmd[7] = msf.cdmsf_sec1; |
| 3069 | cgc->cmd[8] = msf.cdmsf_frame1; |
| 3070 | cgc->data_direction = CGC_DATA_NONE; |
| 3071 | return cdo->generic_packet(cdi, cgc); |
| 3072 | } |
| 3073 | |
| 3074 | static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, |
| 3075 | void __user *arg, |
| 3076 | struct packet_command *cgc) |
| 3077 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 3078 | const struct cdrom_device_ops *cdo = cdi->ops; |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 3079 | struct cdrom_blk blk; |
| 3080 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); |
| 3081 | if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk))) |
| 3082 | return -EFAULT; |
| 3083 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_10; |
| 3084 | cgc->cmd[2] = (blk.from >> 24) & 0xff; |
| 3085 | cgc->cmd[3] = (blk.from >> 16) & 0xff; |
| 3086 | cgc->cmd[4] = (blk.from >> 8) & 0xff; |
| 3087 | cgc->cmd[5] = blk.from & 0xff; |
| 3088 | cgc->cmd[7] = (blk.len >> 8) & 0xff; |
| 3089 | cgc->cmd[8] = blk.len & 0xff; |
| 3090 | cgc->data_direction = CGC_DATA_NONE; |
| 3091 | return cdo->generic_packet(cdi, cgc); |
| 3092 | } |
| 3093 | |
| 3094 | static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, |
| 3095 | void __user *arg, |
| 3096 | struct packet_command *cgc, |
| 3097 | unsigned int cmd) |
| 3098 | { |
| 3099 | struct cdrom_volctrl volctrl; |
| 3100 | unsigned char buffer[32]; |
| 3101 | char mask[sizeof(buffer)]; |
| 3102 | unsigned short offset; |
| 3103 | int ret; |
| 3104 | |
| 3105 | cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n"); |
| 3106 | |
| 3107 | if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg, |
| 3108 | sizeof(volctrl))) |
| 3109 | return -EFAULT; |
| 3110 | |
| 3111 | cgc->buffer = buffer; |
| 3112 | cgc->buflen = 24; |
| 3113 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0); |
| 3114 | if (ret) |
| 3115 | return ret; |
| 3116 | |
| 3117 | /* originally the code depended on buffer[1] to determine |
| 3118 | how much data is available for transfer. buffer[1] is |
| 3119 | unfortunately ambigious and the only reliable way seem |
| 3120 | to be to simply skip over the block descriptor... */ |
| 3121 | offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6)); |
| 3122 | |
| 3123 | if (offset + 16 > sizeof(buffer)) |
| 3124 | return -E2BIG; |
| 3125 | |
| 3126 | if (offset + 16 > cgc->buflen) { |
| 3127 | cgc->buflen = offset + 16; |
| 3128 | ret = cdrom_mode_sense(cdi, cgc, |
| 3129 | GPMODE_AUDIO_CTL_PAGE, 0); |
| 3130 | if (ret) |
| 3131 | return ret; |
| 3132 | } |
| 3133 | |
| 3134 | /* sanity check */ |
| 3135 | if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || |
| 3136 | buffer[offset + 1] < 14) |
| 3137 | return -EINVAL; |
| 3138 | |
| 3139 | /* now we have the current volume settings. if it was only |
| 3140 | a CDROMVOLREAD, return these values */ |
| 3141 | if (cmd == CDROMVOLREAD) { |
| 3142 | volctrl.channel0 = buffer[offset+9]; |
| 3143 | volctrl.channel1 = buffer[offset+11]; |
| 3144 | volctrl.channel2 = buffer[offset+13]; |
| 3145 | volctrl.channel3 = buffer[offset+15]; |
| 3146 | if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl, |
| 3147 | sizeof(volctrl))) |
| 3148 | return -EFAULT; |
| 3149 | return 0; |
| 3150 | } |
| 3151 | |
| 3152 | /* get the volume mask */ |
| 3153 | cgc->buffer = mask; |
| 3154 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1); |
| 3155 | if (ret) |
| 3156 | return ret; |
| 3157 | |
| 3158 | buffer[offset + 9] = volctrl.channel0 & mask[offset + 9]; |
| 3159 | buffer[offset + 11] = volctrl.channel1 & mask[offset + 11]; |
| 3160 | buffer[offset + 13] = volctrl.channel2 & mask[offset + 13]; |
| 3161 | buffer[offset + 15] = volctrl.channel3 & mask[offset + 15]; |
| 3162 | |
| 3163 | /* set volume */ |
| 3164 | cgc->buffer = buffer + offset - 8; |
| 3165 | memset(cgc->buffer, 0, 8); |
| 3166 | return cdrom_mode_select(cdi, cgc); |
| 3167 | } |
| 3168 | |
| 3169 | static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, |
| 3170 | struct packet_command *cgc, |
| 3171 | int cmd) |
| 3172 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 3173 | const struct cdrom_device_ops *cdo = cdi->ops; |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 3174 | cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); |
| 3175 | cgc->cmd[0] = GPCMD_START_STOP_UNIT; |
| 3176 | cgc->cmd[1] = 1; |
| 3177 | cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0; |
| 3178 | cgc->data_direction = CGC_DATA_NONE; |
| 3179 | return cdo->generic_packet(cdi, cgc); |
| 3180 | } |
| 3181 | |
| 3182 | static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, |
| 3183 | struct packet_command *cgc, |
| 3184 | int cmd) |
| 3185 | { |
Kees Cook | 853fe1b | 2017-02-13 16:25:26 -0800 | [diff] [blame] | 3186 | const struct cdrom_device_ops *cdo = cdi->ops; |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 3187 | cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); |
| 3188 | cgc->cmd[0] = GPCMD_PAUSE_RESUME; |
| 3189 | cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; |
| 3190 | cgc->data_direction = CGC_DATA_NONE; |
| 3191 | return cdo->generic_packet(cdi, cgc); |
| 3192 | } |
| 3193 | |
| 3194 | static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, |
| 3195 | void __user *arg, |
| 3196 | struct packet_command *cgc) |
| 3197 | { |
| 3198 | int ret; |
| 3199 | dvd_struct *s; |
| 3200 | int size = sizeof(dvd_struct); |
| 3201 | |
| 3202 | if (!CDROM_CAN(CDC_DVD)) |
| 3203 | return -ENOSYS; |
| 3204 | |
Al Viro | abb0f6a | 2016-01-02 14:59:38 -0500 | [diff] [blame] | 3205 | s = memdup_user(arg, size); |
| 3206 | if (IS_ERR(s)) |
| 3207 | return PTR_ERR(s); |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 3208 | |
| 3209 | cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); |
Joe Perches | 2e9aa08 | 2014-05-04 17:05:08 -0700 | [diff] [blame] | 3210 | |
| 3211 | ret = dvd_read_struct(cdi, s, cgc); |
| 3212 | if (ret) |
| 3213 | goto out; |
| 3214 | |
| 3215 | if (copy_to_user(arg, s, size)) |
| 3216 | ret = -EFAULT; |
| 3217 | out: |
| 3218 | kfree(s); |
| 3219 | return ret; |
| 3220 | } |
| 3221 | |
| 3222 | static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi, |
| 3223 | void __user *arg) |
| 3224 | { |
| 3225 | int ret; |
| 3226 | dvd_authinfo ai; |
| 3227 | if (!CDROM_CAN(CDC_DVD)) |
| 3228 | return -ENOSYS; |
| 3229 | cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n"); |
| 3230 | if (copy_from_user(&ai, (dvd_authinfo __user *)arg, sizeof(ai))) |
| 3231 | return -EFAULT; |
| 3232 | ret = dvd_do_auth(cdi, &ai); |
| 3233 | if (ret) |
| 3234 | return ret; |
| 3235 | if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai))) |
| 3236 | return -EFAULT; |
| 3237 | return 0; |
| 3238 | } |
| 3239 | |
| 3240 | static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi, |
| 3241 | void __user *arg) |
| 3242 | { |
| 3243 | int ret; |
| 3244 | long next = 0; |
| 3245 | cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); |
| 3246 | ret = cdrom_get_next_writable(cdi, &next); |
| 3247 | if (ret) |
| 3248 | return ret; |
| 3249 | if (copy_to_user((long __user *)arg, &next, sizeof(next))) |
| 3250 | return -EFAULT; |
| 3251 | return 0; |
| 3252 | } |
| 3253 | |
| 3254 | static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi, |
| 3255 | void __user *arg) |
| 3256 | { |
| 3257 | int ret; |
| 3258 | long last = 0; |
| 3259 | cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); |
| 3260 | ret = cdrom_get_last_written(cdi, &last); |
| 3261 | if (ret) |
| 3262 | return ret; |
| 3263 | if (copy_to_user((long __user *)arg, &last, sizeof(last))) |
| 3264 | return -EFAULT; |
| 3265 | return 0; |
| 3266 | } |
| 3267 | |
| 3268 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, |
| 3269 | unsigned long arg) |
| 3270 | { |
| 3271 | struct packet_command cgc; |
| 3272 | void __user *userptr = (void __user *)arg; |
| 3273 | |
| 3274 | memset(&cgc, 0, sizeof(cgc)); |
| 3275 | |
| 3276 | /* build a unified command and queue it through |
| 3277 | cdo->generic_packet() */ |
| 3278 | switch (cmd) { |
| 3279 | case CDROMREADRAW: |
| 3280 | case CDROMREADMODE1: |
| 3281 | case CDROMREADMODE2: |
| 3282 | return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd); |
| 3283 | case CDROMREADAUDIO: |
| 3284 | return mmc_ioctl_cdrom_read_audio(cdi, userptr); |
| 3285 | case CDROMSUBCHNL: |
| 3286 | return mmc_ioctl_cdrom_subchannel(cdi, userptr); |
| 3287 | case CDROMPLAYMSF: |
| 3288 | return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc); |
| 3289 | case CDROMPLAYBLK: |
| 3290 | return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc); |
| 3291 | case CDROMVOLCTRL: |
| 3292 | case CDROMVOLREAD: |
| 3293 | return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd); |
| 3294 | case CDROMSTART: |
| 3295 | case CDROMSTOP: |
| 3296 | return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd); |
| 3297 | case CDROMPAUSE: |
| 3298 | case CDROMRESUME: |
| 3299 | return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd); |
| 3300 | case DVD_READ_STRUCT: |
| 3301 | return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc); |
| 3302 | case DVD_AUTH: |
| 3303 | return mmc_ioctl_dvd_auth(cdi, userptr); |
| 3304 | case CDROM_NEXT_WRITABLE: |
| 3305 | return mmc_ioctl_cdrom_next_writable(cdi, userptr); |
| 3306 | case CDROM_LAST_WRITTEN: |
| 3307 | return mmc_ioctl_cdrom_last_written(cdi, userptr); |
| 3308 | } |
| 3309 | |
| 3310 | return -ENOTTY; |
| 3311 | } |
| 3312 | |
| 3313 | /* |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 3314 | * Just about every imaginable ioctl is supported in the Uniform layer |
| 3315 | * these days. |
| 3316 | * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). |
| 3317 | */ |
Al Viro | bbc1cc9 | 2007-10-07 17:54:28 -0400 | [diff] [blame] | 3318 | int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, |
| 3319 | fmode_t mode, unsigned int cmd, unsigned long arg) |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 3320 | { |
| 3321 | void __user *argp = (void __user *)arg; |
| 3322 | int ret; |
| 3323 | |
| 3324 | /* |
| 3325 | * Try the generic SCSI command ioctl's first. |
| 3326 | */ |
Paolo Bonzini | 577ebb3 | 2012-01-12 16:01:27 +0100 | [diff] [blame] | 3327 | ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 3328 | if (ret != -ENOTTY) |
| 3329 | return ret; |
| 3330 | |
| 3331 | switch (cmd) { |
| 3332 | case CDROMMULTISESSION: |
| 3333 | return cdrom_ioctl_multisession(cdi, argp); |
| 3334 | case CDROMEJECT: |
| 3335 | return cdrom_ioctl_eject(cdi); |
| 3336 | case CDROMCLOSETRAY: |
| 3337 | return cdrom_ioctl_closetray(cdi); |
| 3338 | case CDROMEJECT_SW: |
| 3339 | return cdrom_ioctl_eject_sw(cdi, arg); |
| 3340 | case CDROM_MEDIA_CHANGED: |
| 3341 | return cdrom_ioctl_media_changed(cdi, arg); |
| 3342 | case CDROM_SET_OPTIONS: |
| 3343 | return cdrom_ioctl_set_options(cdi, arg); |
| 3344 | case CDROM_CLEAR_OPTIONS: |
| 3345 | return cdrom_ioctl_clear_options(cdi, arg); |
| 3346 | case CDROM_SELECT_SPEED: |
| 3347 | return cdrom_ioctl_select_speed(cdi, arg); |
| 3348 | case CDROM_SELECT_DISC: |
| 3349 | return cdrom_ioctl_select_disc(cdi, arg); |
| 3350 | case CDROMRESET: |
Al Viro | bbc1cc9 | 2007-10-07 17:54:28 -0400 | [diff] [blame] | 3351 | return cdrom_ioctl_reset(cdi, bdev); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 3352 | case CDROM_LOCKDOOR: |
| 3353 | return cdrom_ioctl_lock_door(cdi, arg); |
| 3354 | case CDROM_DEBUG: |
| 3355 | return cdrom_ioctl_debug(cdi, arg); |
| 3356 | case CDROM_GET_CAPABILITY: |
| 3357 | return cdrom_ioctl_get_capability(cdi); |
| 3358 | case CDROM_GET_MCN: |
| 3359 | return cdrom_ioctl_get_mcn(cdi, argp); |
| 3360 | case CDROM_DRIVE_STATUS: |
| 3361 | return cdrom_ioctl_drive_status(cdi, arg); |
| 3362 | case CDROM_DISC_STATUS: |
| 3363 | return cdrom_ioctl_disc_status(cdi); |
| 3364 | case CDROM_CHANGER_NSLOTS: |
| 3365 | return cdrom_ioctl_changer_nslots(cdi); |
| 3366 | } |
| 3367 | |
| 3368 | /* |
| 3369 | * Use the ioctls that are implemented through the generic_packet() |
| 3370 | * interface. this may look at bit funny, but if -ENOTTY is |
| 3371 | * returned that particular ioctl is not implemented and we |
| 3372 | * let it go through the device specific ones. |
| 3373 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3374 | if (CDROM_CAN(CDC_GENERIC_PACKET)) { |
| 3375 | ret = mmc_ioctl(cdi, cmd, arg); |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 3376 | if (ret != -ENOTTY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3377 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3378 | } |
| 3379 | |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 3380 | /* |
Joe Perches | 5944b2c | 2014-05-04 17:05:02 -0700 | [diff] [blame] | 3381 | * Note: most of the cd_dbg() calls are commented out here, |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 3382 | * because they fill up the sys log when CD players poll |
| 3383 | * the drive. |
| 3384 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3385 | switch (cmd) { |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 3386 | case CDROMSUBCHNL: |
| 3387 | return cdrom_ioctl_get_subchnl(cdi, argp); |
| 3388 | case CDROMREADTOCHDR: |
| 3389 | return cdrom_ioctl_read_tochdr(cdi, argp); |
| 3390 | case CDROMREADTOCENTRY: |
| 3391 | return cdrom_ioctl_read_tocentry(cdi, argp); |
| 3392 | case CDROMPLAYMSF: |
| 3393 | return cdrom_ioctl_play_msf(cdi, argp); |
| 3394 | case CDROMPLAYTRKIND: |
| 3395 | return cdrom_ioctl_play_trkind(cdi, argp); |
| 3396 | case CDROMVOLCTRL: |
| 3397 | return cdrom_ioctl_volctrl(cdi, argp); |
| 3398 | case CDROMVOLREAD: |
| 3399 | return cdrom_ioctl_volread(cdi, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3400 | case CDROMSTART: |
| 3401 | case CDROMSTOP: |
| 3402 | case CDROMPAUSE: |
Christoph Hellwig | d2c5d4f | 2006-03-23 03:00:14 -0800 | [diff] [blame] | 3403 | case CDROMRESUME: |
| 3404 | return cdrom_ioctl_audioctl(cdi, cmd); |
| 3405 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3406 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3407 | return -ENOSYS; |
| 3408 | } |
| 3409 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3410 | EXPORT_SYMBOL(cdrom_get_last_written); |
| 3411 | EXPORT_SYMBOL(register_cdrom); |
| 3412 | EXPORT_SYMBOL(unregister_cdrom); |
| 3413 | EXPORT_SYMBOL(cdrom_open); |
| 3414 | EXPORT_SYMBOL(cdrom_release); |
| 3415 | EXPORT_SYMBOL(cdrom_ioctl); |
| 3416 | EXPORT_SYMBOL(cdrom_media_changed); |
| 3417 | EXPORT_SYMBOL(cdrom_number_of_slots); |
| 3418 | EXPORT_SYMBOL(cdrom_mode_select); |
| 3419 | EXPORT_SYMBOL(cdrom_mode_sense); |
| 3420 | EXPORT_SYMBOL(init_cdrom_command); |
| 3421 | EXPORT_SYMBOL(cdrom_get_media_event); |
| 3422 | |
| 3423 | #ifdef CONFIG_SYSCTL |
| 3424 | |
| 3425 | #define CDROM_STR_SIZE 1000 |
| 3426 | |
| 3427 | static struct cdrom_sysctl_settings { |
| 3428 | char info[CDROM_STR_SIZE]; /* general info */ |
| 3429 | int autoclose; /* close tray upon mount, etc */ |
| 3430 | int autoeject; /* eject on umount */ |
| 3431 | int debug; /* turn on debugging messages */ |
| 3432 | int lock; /* lock the door on device open */ |
| 3433 | int check; /* check media type */ |
| 3434 | } cdrom_sysctl_settings; |
| 3435 | |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3436 | enum cdrom_print_option { |
| 3437 | CTL_NAME, |
| 3438 | CTL_SPEED, |
| 3439 | CTL_SLOTS, |
| 3440 | CTL_CAPABILITY |
| 3441 | }; |
| 3442 | |
| 3443 | static int cdrom_print_info(const char *header, int val, char *info, |
| 3444 | int *pos, enum cdrom_print_option option) |
| 3445 | { |
| 3446 | const int max_size = sizeof(cdrom_sysctl_settings.info); |
| 3447 | struct cdrom_device_info *cdi; |
| 3448 | int ret; |
| 3449 | |
| 3450 | ret = scnprintf(info + *pos, max_size - *pos, header); |
| 3451 | if (!ret) |
| 3452 | return 1; |
| 3453 | |
| 3454 | *pos += ret; |
| 3455 | |
Akinobu Mita | 7fd097d | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 3456 | list_for_each_entry(cdi, &cdrom_list, list) { |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3457 | switch (option) { |
| 3458 | case CTL_NAME: |
| 3459 | ret = scnprintf(info + *pos, max_size - *pos, |
| 3460 | "\t%s", cdi->name); |
| 3461 | break; |
| 3462 | case CTL_SPEED: |
| 3463 | ret = scnprintf(info + *pos, max_size - *pos, |
| 3464 | "\t%d", cdi->speed); |
| 3465 | break; |
| 3466 | case CTL_SLOTS: |
| 3467 | ret = scnprintf(info + *pos, max_size - *pos, |
| 3468 | "\t%d", cdi->capacity); |
| 3469 | break; |
| 3470 | case CTL_CAPABILITY: |
| 3471 | ret = scnprintf(info + *pos, max_size - *pos, |
| 3472 | "\t%d", CDROM_CAN(val) != 0); |
| 3473 | break; |
| 3474 | default: |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 3475 | pr_info("invalid option%d\n", option); |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3476 | return 1; |
| 3477 | } |
| 3478 | if (!ret) |
| 3479 | return 1; |
| 3480 | *pos += ret; |
| 3481 | } |
| 3482 | |
| 3483 | return 0; |
| 3484 | } |
| 3485 | |
Joe Perches | 90a3b89 | 2014-06-06 14:37:57 -0700 | [diff] [blame] | 3486 | static int cdrom_sysctl_info(struct ctl_table *ctl, int write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3487 | void __user *buffer, size_t *lenp, loff_t *ppos) |
| 3488 | { |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3489 | int pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3490 | char *info = cdrom_sysctl_settings.info; |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3491 | const int max_size = sizeof(cdrom_sysctl_settings.info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3492 | |
| 3493 | if (!*lenp || (*ppos && !write)) { |
| 3494 | *lenp = 0; |
| 3495 | return 0; |
| 3496 | } |
| 3497 | |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3498 | mutex_lock(&cdrom_mutex); |
| 3499 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3500 | pos = sprintf(info, "CD-ROM information, " VERSION "\n"); |
| 3501 | |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3502 | if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) |
| 3503 | goto done; |
| 3504 | if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) |
| 3505 | goto done; |
| 3506 | if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) |
| 3507 | goto done; |
| 3508 | if (cdrom_print_info("\nCan close tray:\t", |
| 3509 | CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) |
| 3510 | goto done; |
| 3511 | if (cdrom_print_info("\nCan open tray:\t", |
| 3512 | CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) |
| 3513 | goto done; |
| 3514 | if (cdrom_print_info("\nCan lock tray:\t", |
| 3515 | CDC_LOCK, info, &pos, CTL_CAPABILITY)) |
| 3516 | goto done; |
| 3517 | if (cdrom_print_info("\nCan change speed:", |
| 3518 | CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) |
| 3519 | goto done; |
| 3520 | if (cdrom_print_info("\nCan select disk:", |
| 3521 | CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) |
| 3522 | goto done; |
| 3523 | if (cdrom_print_info("\nCan read multisession:", |
| 3524 | CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) |
| 3525 | goto done; |
| 3526 | if (cdrom_print_info("\nCan read MCN:\t", |
| 3527 | CDC_MCN, info, &pos, CTL_CAPABILITY)) |
| 3528 | goto done; |
| 3529 | if (cdrom_print_info("\nReports media changed:", |
| 3530 | CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) |
| 3531 | goto done; |
| 3532 | if (cdrom_print_info("\nCan play audio:\t", |
| 3533 | CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) |
| 3534 | goto done; |
| 3535 | if (cdrom_print_info("\nCan write CD-R:\t", |
| 3536 | CDC_CD_R, info, &pos, CTL_CAPABILITY)) |
| 3537 | goto done; |
| 3538 | if (cdrom_print_info("\nCan write CD-RW:", |
| 3539 | CDC_CD_RW, info, &pos, CTL_CAPABILITY)) |
| 3540 | goto done; |
| 3541 | if (cdrom_print_info("\nCan read DVD:\t", |
| 3542 | CDC_DVD, info, &pos, CTL_CAPABILITY)) |
| 3543 | goto done; |
| 3544 | if (cdrom_print_info("\nCan write DVD-R:", |
| 3545 | CDC_DVD_R, info, &pos, CTL_CAPABILITY)) |
| 3546 | goto done; |
| 3547 | if (cdrom_print_info("\nCan write DVD-RAM:", |
| 3548 | CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) |
| 3549 | goto done; |
| 3550 | if (cdrom_print_info("\nCan read MRW:\t", |
| 3551 | CDC_MRW, info, &pos, CTL_CAPABILITY)) |
| 3552 | goto done; |
| 3553 | if (cdrom_print_info("\nCan write MRW:\t", |
| 3554 | CDC_MRW_W, info, &pos, CTL_CAPABILITY)) |
| 3555 | goto done; |
| 3556 | if (cdrom_print_info("\nCan write RAM:\t", |
| 3557 | CDC_RAM, info, &pos, CTL_CAPABILITY)) |
| 3558 | goto done; |
| 3559 | if (!scnprintf(info + pos, max_size - pos, "\n\n")) |
| 3560 | goto done; |
| 3561 | doit: |
| 3562 | mutex_unlock(&cdrom_mutex); |
Alexey Dobriyan | 8d65af7 | 2009-09-23 15:57:19 -0700 | [diff] [blame] | 3563 | return proc_dostring(ctl, write, buffer, lenp, ppos); |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3564 | done: |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 3565 | pr_info("info buffer too small\n"); |
Dave Young | 554988d | 2007-06-19 09:14:26 +0200 | [diff] [blame] | 3566 | goto doit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3567 | } |
| 3568 | |
| 3569 | /* Unfortunately, per device settings are not implemented through |
| 3570 | procfs/sysctl yet. When they are, this will naturally disappear. For now |
| 3571 | just update all drives. Later this will become the template on which |
| 3572 | new registered drives will be based. */ |
| 3573 | static void cdrom_update_settings(void) |
| 3574 | { |
| 3575 | struct cdrom_device_info *cdi; |
| 3576 | |
Akinobu Mita | 032d8d9 | 2008-03-26 12:09:01 +0100 | [diff] [blame] | 3577 | mutex_lock(&cdrom_mutex); |
Akinobu Mita | 7fd097d | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 3578 | list_for_each_entry(cdi, &cdrom_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3579 | if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) |
| 3580 | cdi->options |= CDO_AUTO_CLOSE; |
| 3581 | else if (!autoclose) |
| 3582 | cdi->options &= ~CDO_AUTO_CLOSE; |
| 3583 | if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) |
| 3584 | cdi->options |= CDO_AUTO_EJECT; |
| 3585 | else if (!autoeject) |
| 3586 | cdi->options &= ~CDO_AUTO_EJECT; |
| 3587 | if (lockdoor && CDROM_CAN(CDC_LOCK)) |
| 3588 | cdi->options |= CDO_LOCK; |
| 3589 | else if (!lockdoor) |
| 3590 | cdi->options &= ~CDO_LOCK; |
| 3591 | if (check_media_type) |
| 3592 | cdi->options |= CDO_CHECK_TYPE; |
| 3593 | else |
| 3594 | cdi->options &= ~CDO_CHECK_TYPE; |
| 3595 | } |
Akinobu Mita | 032d8d9 | 2008-03-26 12:09:01 +0100 | [diff] [blame] | 3596 | mutex_unlock(&cdrom_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3597 | } |
| 3598 | |
Joe Perches | 90a3b89 | 2014-06-06 14:37:57 -0700 | [diff] [blame] | 3599 | static int cdrom_sysctl_handler(struct ctl_table *ctl, int write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3600 | void __user *buffer, size_t *lenp, loff_t *ppos) |
| 3601 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3602 | int ret; |
| 3603 | |
Alexey Dobriyan | 8d65af7 | 2009-09-23 15:57:19 -0700 | [diff] [blame] | 3604 | ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3605 | |
Eric W. Biederman | 06489b4 | 2007-10-18 03:05:28 -0700 | [diff] [blame] | 3606 | if (write) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3607 | |
| 3608 | /* we only care for 1 or 0. */ |
Eric W. Biederman | 06489b4 | 2007-10-18 03:05:28 -0700 | [diff] [blame] | 3609 | autoclose = !!cdrom_sysctl_settings.autoclose; |
| 3610 | autoeject = !!cdrom_sysctl_settings.autoeject; |
| 3611 | debug = !!cdrom_sysctl_settings.debug; |
| 3612 | lockdoor = !!cdrom_sysctl_settings.lock; |
| 3613 | check_media_type = !!cdrom_sysctl_settings.check; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3614 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3615 | /* update the option flags according to the changes. we |
| 3616 | don't have per device options through sysctl yet, |
| 3617 | but we will have and then this will disappear. */ |
| 3618 | cdrom_update_settings(); |
| 3619 | } |
| 3620 | |
| 3621 | return ret; |
| 3622 | } |
| 3623 | |
| 3624 | /* Place files in /proc/sys/dev/cdrom */ |
Joe Perches | 90a3b89 | 2014-06-06 14:37:57 -0700 | [diff] [blame] | 3625 | static struct ctl_table cdrom_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3626 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3627 | .procname = "info", |
| 3628 | .data = &cdrom_sysctl_settings.info, |
| 3629 | .maxlen = CDROM_STR_SIZE, |
| 3630 | .mode = 0444, |
Eric W. Biederman | 6d45611 | 2009-11-16 03:11:48 -0800 | [diff] [blame] | 3631 | .proc_handler = cdrom_sysctl_info, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3632 | }, |
| 3633 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3634 | .procname = "autoclose", |
| 3635 | .data = &cdrom_sysctl_settings.autoclose, |
| 3636 | .maxlen = sizeof(int), |
| 3637 | .mode = 0644, |
Eric W. Biederman | 6d45611 | 2009-11-16 03:11:48 -0800 | [diff] [blame] | 3638 | .proc_handler = cdrom_sysctl_handler, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3639 | }, |
| 3640 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3641 | .procname = "autoeject", |
| 3642 | .data = &cdrom_sysctl_settings.autoeject, |
| 3643 | .maxlen = sizeof(int), |
| 3644 | .mode = 0644, |
Eric W. Biederman | 6d45611 | 2009-11-16 03:11:48 -0800 | [diff] [blame] | 3645 | .proc_handler = cdrom_sysctl_handler, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3646 | }, |
| 3647 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3648 | .procname = "debug", |
| 3649 | .data = &cdrom_sysctl_settings.debug, |
| 3650 | .maxlen = sizeof(int), |
| 3651 | .mode = 0644, |
Eric W. Biederman | 6d45611 | 2009-11-16 03:11:48 -0800 | [diff] [blame] | 3652 | .proc_handler = cdrom_sysctl_handler, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3653 | }, |
| 3654 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3655 | .procname = "lock", |
| 3656 | .data = &cdrom_sysctl_settings.lock, |
| 3657 | .maxlen = sizeof(int), |
| 3658 | .mode = 0644, |
Eric W. Biederman | 6d45611 | 2009-11-16 03:11:48 -0800 | [diff] [blame] | 3659 | .proc_handler = cdrom_sysctl_handler, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3660 | }, |
| 3661 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3662 | .procname = "check_media", |
| 3663 | .data = &cdrom_sysctl_settings.check, |
| 3664 | .maxlen = sizeof(int), |
| 3665 | .mode = 0644, |
Eric W. Biederman | 6d45611 | 2009-11-16 03:11:48 -0800 | [diff] [blame] | 3666 | .proc_handler = cdrom_sysctl_handler |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3667 | }, |
Eric W. Biederman | 894d249 | 2009-11-05 14:34:02 -0800 | [diff] [blame] | 3668 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3669 | }; |
| 3670 | |
Joe Perches | 90a3b89 | 2014-06-06 14:37:57 -0700 | [diff] [blame] | 3671 | static struct ctl_table cdrom_cdrom_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3672 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3673 | .procname = "cdrom", |
| 3674 | .maxlen = 0, |
| 3675 | .mode = 0555, |
| 3676 | .child = cdrom_table, |
| 3677 | }, |
Eric W. Biederman | 894d249 | 2009-11-05 14:34:02 -0800 | [diff] [blame] | 3678 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3679 | }; |
| 3680 | |
| 3681 | /* Make sure that /proc/sys/dev is there */ |
Joe Perches | 90a3b89 | 2014-06-06 14:37:57 -0700 | [diff] [blame] | 3682 | static struct ctl_table cdrom_root_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3683 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3684 | .procname = "dev", |
| 3685 | .maxlen = 0, |
| 3686 | .mode = 0555, |
| 3687 | .child = cdrom_cdrom_table, |
| 3688 | }, |
Eric W. Biederman | 894d249 | 2009-11-05 14:34:02 -0800 | [diff] [blame] | 3689 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3690 | }; |
| 3691 | static struct ctl_table_header *cdrom_sysctl_header; |
| 3692 | |
| 3693 | static void cdrom_sysctl_register(void) |
| 3694 | { |
| 3695 | static int initialized; |
| 3696 | |
| 3697 | if (initialized == 1) |
| 3698 | return; |
| 3699 | |
Eric W. Biederman | 0b4d414 | 2007-02-14 00:34:09 -0800 | [diff] [blame] | 3700 | cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3701 | |
| 3702 | /* set the defaults */ |
| 3703 | cdrom_sysctl_settings.autoclose = autoclose; |
| 3704 | cdrom_sysctl_settings.autoeject = autoeject; |
| 3705 | cdrom_sysctl_settings.debug = debug; |
| 3706 | cdrom_sysctl_settings.lock = lockdoor; |
| 3707 | cdrom_sysctl_settings.check = check_media_type; |
| 3708 | |
| 3709 | initialized = 1; |
| 3710 | } |
| 3711 | |
| 3712 | static void cdrom_sysctl_unregister(void) |
| 3713 | { |
| 3714 | if (cdrom_sysctl_header) |
| 3715 | unregister_sysctl_table(cdrom_sysctl_header); |
| 3716 | } |
| 3717 | |
Akinobu Mita | 17672cf | 2008-03-26 12:08:59 +0100 | [diff] [blame] | 3718 | #else /* CONFIG_SYSCTL */ |
| 3719 | |
| 3720 | static void cdrom_sysctl_register(void) |
| 3721 | { |
| 3722 | } |
| 3723 | |
| 3724 | static void cdrom_sysctl_unregister(void) |
| 3725 | { |
| 3726 | } |
| 3727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3728 | #endif /* CONFIG_SYSCTL */ |
| 3729 | |
| 3730 | static int __init cdrom_init(void) |
| 3731 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3732 | cdrom_sysctl_register(); |
Akinobu Mita | 17672cf | 2008-03-26 12:08:59 +0100 | [diff] [blame] | 3733 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3734 | return 0; |
| 3735 | } |
| 3736 | |
| 3737 | static void __exit cdrom_exit(void) |
| 3738 | { |
Joe Perches | e597cd0 | 2010-07-01 08:24:32 +0200 | [diff] [blame] | 3739 | pr_info("Uniform CD-ROM driver unloaded\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3740 | cdrom_sysctl_unregister(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3741 | } |
| 3742 | |
| 3743 | module_init(cdrom_init); |
| 3744 | module_exit(cdrom_exit); |
| 3745 | MODULE_LICENSE("GPL"); |