1 /* linux/drivers/cdrom/cdrom.c 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> 33 -- New maintainer! As David A. van Leeuwen has been too busy to actively 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 -------------------------------------------------------------------------*/ 244 245 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 246 247 #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) */ 267 268 #include <linux/module.h> 269 #include <linux/fs.h> 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> 284 #include <linux/uaccess.h> 285 #include <scsi/scsi_request.h> 286 287 /* used to tell the module to turn on full debugging messages */ 288 static bool debug; 289 /* default compatibility mode */ 290 static bool autoclose=1; 291 static bool autoeject; 292 static bool lockdoor = 1; 293 /* will we ever get to use this... sigh. */ 294 static bool check_media_type; 295 /* automatically restart mrw format */ 296 static bool mrw_format_restart = 1; 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); 303 304 static DEFINE_MUTEX(cdrom_mutex); 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" }; 314 315 #if (ERRLOGMASK != CD_NOTHING) 316 #define cd_dbg(type, fmt, ...) \ 317 do { \ 318 if ((ERRLOGMASK & type) || debug == 1) \ 319 pr_debug(fmt, ##__VA_ARGS__); \ 320 } while (0) 321 #else 322 #define cd_dbg(type, fmt, ...) \ 323 do { \ 324 if (0 && (ERRLOGMASK & type) || debug == 1) \ 325 pr_debug(fmt, ##__VA_ARGS__); \ 326 } while (0) 327 #endif 328 329 /* 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)) 332 333 /* 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) 338 339 /* Not-exported routines. */ 340 341 static void cdrom_sysctl_register(void); 342 343 static LIST_HEAD(cdrom_list); 344 345 int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, 346 struct packet_command *cgc) 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 } 357 EXPORT_SYMBOL(cdrom_dummy_generic_packet); 358 359 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 } 370 371 /* requires CD R/RW */ 372 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, 373 disc_information *di) 374 { 375 const struct cdrom_device_ops *cdo = cdi->ops; 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 } 406 407 /* 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 */ 412 #define ENSURE(call, bits) \ 413 do { \ 414 if (cdo->call == NULL) \ 415 *change_capability &= ~(bits); \ 416 } while (0) 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; 425 char buffer[16]; 426 427 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); 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; 434 return 0; 435 } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { 436 cdi->mrw_mode_page = MRW_MODE_PC_PRE1; 437 return 0; 438 } 439 440 return 1; 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; 447 unsigned char buffer[16]; 448 int ret; 449 450 *write = 0; 451 452 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); 453 454 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; 455 cgc.cmd[3] = CDF_MRW; 456 cgc.cmd[8] = sizeof(buffer); 457 cgc.quiet = 1; 458 459 if ((ret = cdi->ops->generic_packet(cdi, &cgc))) 460 return ret; 461 462 mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; 463 if (be16_to_cpu(mfd->feature_code) != CDF_MRW) 464 return 1; 465 *write = mfd->write; 466 467 if ((ret = cdrom_mrw_probe_pc(cdi))) { 468 *write = 0; 469 return ret; 470 } 471 472 return 0; 473 } 474 475 static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) 476 { 477 struct packet_command cgc; 478 unsigned char buffer[12]; 479 int ret; 480 481 pr_info("%sstarting format\n", cont ? "Re" : ""); 482 483 /* 484 * FmtData bit set (bit 4), format type is 1 485 */ 486 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); 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) 511 pr_info("bgformat failed\n"); 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 } 533 534 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) { 545 pr_info("issuing MRW background format suspend\n"); 546 ret = cdrom_mrw_bgformat_susp(cdi, 0); 547 } 548 549 if (!ret && cdi->media_written) 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; 559 char buffer[16]; 560 int ret, offset, size; 561 562 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); 563 564 cgc.buffer = buffer; 565 cgc.buflen = sizeof(buffer); 566 567 ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0); 568 if (ret) 569 return ret; 570 571 mph = (struct mode_page_header *)buffer; 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; 577 578 ret = cdrom_mode_select(cdi, &cgc); 579 if (ret) 580 return ret; 581 582 pr_info("%s: mrw address space %s selected\n", 583 cdi->name, mrw_address_space[space]); 584 return 0; 585 } 586 587 int register_cdrom(struct cdrom_device_info *cdi) 588 { 589 static char banner_printed; 590 const struct cdrom_device_ops *cdo = cdi->ops; 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; 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; 632 633 WARN_ON(!cdo->generic_packet); 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); 653 654 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 } 683 684 static int cdrom_get_random_writable(struct cdrom_device_info *cdi, 685 struct rwrt_feature_desc *rfd) 686 { 687 struct packet_command cgc; 688 char buffer[24]; 689 int ret; 690 691 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); 692 693 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ 694 cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ 695 cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ 696 cgc.quiet = 1; 697 698 if ((ret = cdi->ops->generic_packet(cdi, &cgc))) 699 return ret; 700 701 memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); 702 return 0; 703 } 704 705 static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) 706 { 707 struct packet_command cgc; 708 char buffer[16]; 709 __be16 *feature_code; 710 int ret; 711 712 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); 713 714 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; 715 cgc.cmd[3] = CDF_HWDM; 716 cgc.cmd[8] = sizeof(buffer); 717 cgc.quiet = 1; 718 719 if ((ret = cdi->ops->generic_packet(cdi, &cgc))) 720 return ret; 721 722 feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; 723 if (be16_to_cpu(*feature_code) == CDF_HWDM) 724 return 0; 725 726 return 1; 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)) { 784 pr_err("failed setting lba address space\n"); 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; 803 pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]); 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; 816 char buffer[255]; 817 int ret; 818 819 init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); 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 */ 836 if (ret) 837 return 0; 838 839 return buffer[3] & 0x80; 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; 854 855 cd_dbg(CD_OPEN, "can open for random write\n"); 856 return ret; 857 } 858 859 static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) 860 { 861 struct packet_command cgc; 862 char buffer[32]; 863 int ret, mmc3_profile; 864 865 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); 866 867 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; 868 cgc.cmd[1] = 0; 869 cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ 870 cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ 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 */ 886 case 0x43: /* BD-RE */ 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) { 945 cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); 946 return; 947 } 948 949 if (!cdi->media_written) { 950 cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); 951 return; 952 } 953 954 pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name); 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 } 985 986 /* 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 1033 static 1034 int open_for_data(struct cdrom_device_info *cdi) 1035 { 1036 int ret; 1037 const struct cdrom_device_ops *cdo = cdi->ops; 1038 tracktype tracks; 1039 cd_dbg(CD_OPEN, "entering open_for_data\n"); 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); 1044 cd_dbg(CD_OPEN, "drive_status=%d\n", ret); 1045 if (ret == CDS_TRAY_OPEN) { 1046 cd_dbg(CD_OPEN, "the tray is open...\n"); 1047 /* can/may i close it? */ 1048 if (CDROM_CAN(CDC_CLOSE_TRAY) && 1049 cdi->options & CDO_AUTO_CLOSE) { 1050 cd_dbg(CD_OPEN, "trying to close the tray\n"); 1051 ret=cdo->tray_move(cdi,0); 1052 if (ret) { 1053 cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n"); 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 { 1063 cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n"); 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)) { 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"); 1072 ret=-ENOMEDIUM; 1073 goto clean_up_and_return; 1074 } 1075 cd_dbg(CD_OPEN, "the tray is now closed\n"); 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) { 1086 cd_dbg(CD_OPEN, "bummer. no disc.\n"); 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! */ 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)); 1099 ret=-EMEDIUMTYPE; 1100 goto clean_up_and_return; 1101 } 1102 else { 1103 cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n"); 1104 } 1105 } 1106 1107 cd_dbg(CD_OPEN, "all seems well, opening the devicen"); 1108 1109 /* all seems well, we can open the device */ 1110 ret = cdo->open(cdi, 0); /* open for data */ 1111 cd_dbg(CD_OPEN, "opening the device gave me %d\n", ret); 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) { 1116 cd_dbg(CD_OPEN, "open device failed\n"); 1117 goto clean_up_and_return; 1118 } 1119 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { 1120 cdo->lock_door(cdi, 1); 1121 cd_dbg(CD_OPEN, "door locked\n"); 1122 } 1123 cd_dbg(CD_OPEN, "device opened successfully\n"); 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: 1132 cd_dbg(CD_OPEN, "open failed\n"); 1133 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { 1134 cdo->lock_door(cdi, 0); 1135 cd_dbg(CD_OPEN, "door unlocked\n"); 1136 } 1137 return ret; 1138 } 1139 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 /* if this was a O_NONBLOCK open and we should honor the flags, 1156 * do a quick open without drive/disc integrity checks. */ 1157 cdi->use_count++; 1158 if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) { 1159 ret = cdi->ops->open(cdi, 1); 1160 } else { 1161 ret = open_for_data(cdi); 1162 if (ret) 1163 goto err; 1164 cdrom_mmc3_profile(cdi); 1165 if (mode & FMODE_WRITE) { 1166 ret = -EROFS; 1167 if (cdrom_open_write(cdi)) 1168 goto err_release; 1169 if (!CDROM_CAN(CDC_RAM)) 1170 goto err_release; 1171 ret = 0; 1172 cdi->media_written = 0; 1173 } 1174 } 1175 1176 if (ret) 1177 goto err; 1178 1179 cd_dbg(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", 1180 cdi->name, cdi->use_count); 1181 return 0; 1182 err_release: 1183 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { 1184 cdi->ops->lock_door(cdi, 0); 1185 cd_dbg(CD_OPEN, "door unlocked\n"); 1186 } 1187 cdi->ops->release(cdi); 1188 err: 1189 cdi->use_count--; 1190 return ret; 1191 } 1192 1193 /* This code is similar to that in open_for_data. The routine is called 1194 whenever an audio play operation is requested. 1195 */ 1196 static int check_for_audio_disc(struct cdrom_device_info *cdi, 1197 const struct cdrom_device_ops *cdo) 1198 { 1199 int ret; 1200 tracktype tracks; 1201 cd_dbg(CD_OPEN, "entering check_for_audio_disc\n"); 1202 if (!(cdi->options & CDO_CHECK_TYPE)) 1203 return 0; 1204 if (cdo->drive_status != NULL) { 1205 ret = cdo->drive_status(cdi, CDSL_CURRENT); 1206 cd_dbg(CD_OPEN, "drive_status=%d\n", ret); 1207 if (ret == CDS_TRAY_OPEN) { 1208 cd_dbg(CD_OPEN, "the tray is open...\n"); 1209 /* can/may i close it? */ 1210 if (CDROM_CAN(CDC_CLOSE_TRAY) && 1211 cdi->options & CDO_AUTO_CLOSE) { 1212 cd_dbg(CD_OPEN, "trying to close the tray\n"); 1213 ret=cdo->tray_move(cdi,0); 1214 if (ret) { 1215 cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n"); 1216 /* Ignore the error from the low 1217 level driver. We don't care why it 1218 couldn't close the tray. We only care 1219 that there is no disc in the drive, 1220 since that is the _REAL_ problem here.*/ 1221 return -ENOMEDIUM; 1222 } 1223 } else { 1224 cd_dbg(CD_OPEN, "bummer. this driver can't close the tray.\n"); 1225 return -ENOMEDIUM; 1226 } 1227 /* Ok, the door should be closed now.. Check again */ 1228 ret = cdo->drive_status(cdi, CDSL_CURRENT); 1229 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { 1230 cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); 1231 return -ENOMEDIUM; 1232 } 1233 if (ret!=CDS_DISC_OK) { 1234 cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n"); 1235 return -EIO; 1236 } 1237 cd_dbg(CD_OPEN, "the tray is now closed\n"); 1238 } 1239 } 1240 cdrom_count_tracks(cdi, &tracks); 1241 if (tracks.error) 1242 return(tracks.error); 1243 1244 if (tracks.audio==0) 1245 return -EMEDIUMTYPE; 1246 1247 return 0; 1248 } 1249 1250 void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) 1251 { 1252 const struct cdrom_device_ops *cdo = cdi->ops; 1253 int opened_for_data; 1254 1255 cd_dbg(CD_CLOSE, "entering cdrom_release\n"); 1256 1257 if (cdi->use_count > 0) 1258 cdi->use_count--; 1259 1260 if (cdi->use_count == 0) { 1261 cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", 1262 cdi->name); 1263 cdrom_dvd_rw_close_write(cdi); 1264 1265 if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) { 1266 cd_dbg(CD_CLOSE, "Unlocking door!\n"); 1267 cdo->lock_door(cdi, 0); 1268 } 1269 } 1270 1271 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || 1272 !(mode & FMODE_NDELAY); 1273 1274 /* 1275 * flush cache on last write release 1276 */ 1277 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) 1278 cdrom_close_write(cdi); 1279 1280 cdo->release(cdi); 1281 if (cdi->use_count == 0) { /* last process that closes dev*/ 1282 if (opened_for_data && 1283 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) 1284 cdo->tray_move(cdi, 1); 1285 } 1286 } 1287 1288 static int cdrom_read_mech_status(struct cdrom_device_info *cdi, 1289 struct cdrom_changer_info *buf) 1290 { 1291 struct packet_command cgc; 1292 const struct cdrom_device_ops *cdo = cdi->ops; 1293 int length; 1294 1295 /* 1296 * Sanyo changer isn't spec compliant (doesn't use regular change 1297 * LOAD_UNLOAD command, and it doesn't implement the mech status 1298 * command below 1299 */ 1300 if (cdi->sanyo_slot) { 1301 buf->hdr.nslots = 3; 1302 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; 1303 for (length = 0; length < 3; length++) { 1304 buf->slots[length].disc_present = 1; 1305 buf->slots[length].change = 0; 1306 } 1307 return 0; 1308 } 1309 1310 length = sizeof(struct cdrom_mechstat_header) + 1311 cdi->capacity * sizeof(struct cdrom_slot); 1312 1313 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); 1314 cgc.cmd[0] = GPCMD_MECHANISM_STATUS; 1315 cgc.cmd[8] = (length >> 8) & 0xff; 1316 cgc.cmd[9] = length & 0xff; 1317 return cdo->generic_packet(cdi, &cgc); 1318 } 1319 1320 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) 1321 { 1322 struct cdrom_changer_info *info; 1323 int ret; 1324 1325 cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n"); 1326 if (cdi->sanyo_slot) 1327 return CDS_NO_INFO; 1328 1329 info = kmalloc(sizeof(*info), GFP_KERNEL); 1330 if (!info) 1331 return -ENOMEM; 1332 1333 if ((ret = cdrom_read_mech_status(cdi, info))) 1334 goto out_free; 1335 1336 if (info->slots[slot].disc_present) 1337 ret = CDS_DISC_OK; 1338 else 1339 ret = CDS_NO_DISC; 1340 1341 out_free: 1342 kfree(info); 1343 return ret; 1344 } 1345 1346 /* Return the number of slots for an ATAPI/SCSI cdrom, 1347 * return 1 if not a changer. 1348 */ 1349 int cdrom_number_of_slots(struct cdrom_device_info *cdi) 1350 { 1351 int status; 1352 int nslots = 1; 1353 struct cdrom_changer_info *info; 1354 1355 cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n"); 1356 /* cdrom_read_mech_status requires a valid value for capacity: */ 1357 cdi->capacity = 0; 1358 1359 info = kmalloc(sizeof(*info), GFP_KERNEL); 1360 if (!info) 1361 return -ENOMEM; 1362 1363 if ((status = cdrom_read_mech_status(cdi, info)) == 0) 1364 nslots = info->hdr.nslots; 1365 1366 kfree(info); 1367 return nslots; 1368 } 1369 1370 1371 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ 1372 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) 1373 { 1374 struct packet_command cgc; 1375 1376 cd_dbg(CD_CHANGER, "entering cdrom_load_unload()\n"); 1377 if (cdi->sanyo_slot && slot < 0) 1378 return 0; 1379 1380 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); 1381 cgc.cmd[0] = GPCMD_LOAD_UNLOAD; 1382 cgc.cmd[4] = 2 + (slot >= 0); 1383 cgc.cmd[8] = slot; 1384 cgc.timeout = 60 * HZ; 1385 1386 /* The Sanyo 3 CD changer uses byte 7 of the 1387 GPCMD_TEST_UNIT_READY to command to switch CDs instead of 1388 using the GPCMD_LOAD_UNLOAD opcode. */ 1389 if (cdi->sanyo_slot && -1 < slot) { 1390 cgc.cmd[0] = GPCMD_TEST_UNIT_READY; 1391 cgc.cmd[7] = slot; 1392 cgc.cmd[4] = cgc.cmd[8] = 0; 1393 cdi->sanyo_slot = slot ? slot : 3; 1394 } 1395 1396 return cdi->ops->generic_packet(cdi, &cgc); 1397 } 1398 1399 static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) 1400 { 1401 struct cdrom_changer_info *info; 1402 int curslot; 1403 int ret; 1404 1405 cd_dbg(CD_CHANGER, "entering cdrom_select_disc()\n"); 1406 if (!CDROM_CAN(CDC_SELECT_DISC)) 1407 return -EDRIVE_CANT_DO_THIS; 1408 1409 if (cdi->ops->check_events) 1410 cdi->ops->check_events(cdi, 0, slot); 1411 else 1412 cdi->ops->media_changed(cdi, slot); 1413 1414 if (slot == CDSL_NONE) { 1415 /* set media changed bits, on both queues */ 1416 cdi->mc_flags = 0x3; 1417 return cdrom_load_unload(cdi, -1); 1418 } 1419 1420 info = kmalloc(sizeof(*info), GFP_KERNEL); 1421 if (!info) 1422 return -ENOMEM; 1423 1424 if ((ret = cdrom_read_mech_status(cdi, info))) { 1425 kfree(info); 1426 return ret; 1427 } 1428 1429 curslot = info->hdr.curslot; 1430 kfree(info); 1431 1432 if (cdi->use_count > 1 || cdi->keeplocked) { 1433 if (slot == CDSL_CURRENT) { 1434 return curslot; 1435 } else { 1436 return -EBUSY; 1437 } 1438 } 1439 1440 /* Specifying CDSL_CURRENT will attempt to load the currnet slot, 1441 which is useful if it had been previously unloaded. 1442 Whether it can or not, it returns the current slot. 1443 Similarly, if slot happens to be the current one, we still 1444 try and load it. */ 1445 if (slot == CDSL_CURRENT) 1446 slot = curslot; 1447 1448 /* set media changed bits on both queues */ 1449 cdi->mc_flags = 0x3; 1450 if ((ret = cdrom_load_unload(cdi, slot))) 1451 return ret; 1452 1453 return slot; 1454 } 1455 1456 /* 1457 * As cdrom implements an extra ioctl consumer for media changed 1458 * event, it needs to buffer ->check_events() output, such that event 1459 * is not lost for both the usual VFS and ioctl paths. 1460 * cdi->{vfs|ioctl}_events are used to buffer pending events for each 1461 * path. 1462 * 1463 * XXX: Locking is non-existent. cdi->ops->check_events() can be 1464 * called in parallel and buffering fields are accessed without any 1465 * exclusion. The original media_changed code had the same problem. 1466 * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl 1467 * and remove this cruft altogether. It doesn't have much usefulness 1468 * at this point. 1469 */ 1470 static void cdrom_update_events(struct cdrom_device_info *cdi, 1471 unsigned int clearing) 1472 { 1473 unsigned int events; 1474 1475 events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT); 1476 cdi->vfs_events |= events; 1477 cdi->ioctl_events |= events; 1478 } 1479 1480 unsigned int cdrom_check_events(struct cdrom_device_info *cdi, 1481 unsigned int clearing) 1482 { 1483 unsigned int events; 1484 1485 cdrom_update_events(cdi, clearing); 1486 events = cdi->vfs_events; 1487 cdi->vfs_events = 0; 1488 return events; 1489 } 1490 EXPORT_SYMBOL(cdrom_check_events); 1491 1492 /* We want to make media_changed accessible to the user through an 1493 * ioctl. The main problem now is that we must double-buffer the 1494 * low-level implementation, to assure that the VFS and the user both 1495 * see a medium change once. 1496 */ 1497 1498 static 1499 int media_changed(struct cdrom_device_info *cdi, int queue) 1500 { 1501 unsigned int mask = (1 << (queue & 1)); 1502 int ret = !!(cdi->mc_flags & mask); 1503 bool changed; 1504 1505 if (!CDROM_CAN(CDC_MEDIA_CHANGED)) 1506 return ret; 1507 1508 /* changed since last call? */ 1509 if (cdi->ops->check_events) { 1510 BUG_ON(!queue); /* shouldn't be called from VFS path */ 1511 cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE); 1512 changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE; 1513 cdi->ioctl_events = 0; 1514 } else 1515 changed = cdi->ops->media_changed(cdi, CDSL_CURRENT); 1516 1517 if (changed) { 1518 cdi->mc_flags = 0x3; /* set bit on both queues */ 1519 ret |= 1; 1520 cdi->media_written = 0; 1521 } 1522 1523 cdi->mc_flags &= ~mask; /* clear bit */ 1524 return ret; 1525 } 1526 1527 int cdrom_media_changed(struct cdrom_device_info *cdi) 1528 { 1529 /* This talks to the VFS, which doesn't like errors - just 1 or 0. 1530 * Returning "0" is always safe (media hasn't been changed). Do that 1531 * if the low-level cdrom driver dosn't support media changed. */ 1532 if (cdi == NULL || cdi->ops->media_changed == NULL) 1533 return 0; 1534 if (!CDROM_CAN(CDC_MEDIA_CHANGED)) 1535 return 0; 1536 return media_changed(cdi, 0); 1537 } 1538 1539 /* Requests to the low-level drivers will /always/ be done in the 1540 following format convention: 1541 1542 CDROM_LBA: all data-related requests. 1543 CDROM_MSF: all audio-related requests. 1544 1545 However, a low-level implementation is allowed to refuse this 1546 request, and return information in its own favorite format. 1547 1548 It doesn't make sense /at all/ to ask for a play_audio in LBA 1549 format, or ask for multi-session info in MSF format. However, for 1550 backward compatibility these format requests will be satisfied, but 1551 the requests to the low-level drivers will be sanitized in the more 1552 meaningful format indicated above. 1553 */ 1554 1555 static 1556 void sanitize_format(union cdrom_addr *addr, 1557 u_char * curr, u_char requested) 1558 { 1559 if (*curr == requested) 1560 return; /* nothing to be done! */ 1561 if (requested == CDROM_LBA) { 1562 addr->lba = (int) addr->msf.frame + 1563 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); 1564 } else { /* CDROM_MSF */ 1565 int lba = addr->lba; 1566 addr->msf.frame = lba % 75; 1567 lba /= 75; 1568 lba += 2; 1569 addr->msf.second = lba % 60; 1570 addr->msf.minute = lba / 60; 1571 } 1572 *curr = requested; 1573 } 1574 1575 void init_cdrom_command(struct packet_command *cgc, void *buf, int len, 1576 int type) 1577 { 1578 memset(cgc, 0, sizeof(struct packet_command)); 1579 if (buf) 1580 memset(buf, 0, len); 1581 cgc->buffer = (char *) buf; 1582 cgc->buflen = len; 1583 cgc->data_direction = type; 1584 cgc->timeout = CDROM_DEF_TIMEOUT; 1585 } 1586 1587 /* DVD handling */ 1588 1589 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) 1590 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) 1591 1592 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) 1593 { 1594 cgc->cmd[0] = GPCMD_REPORT_KEY; 1595 cgc->cmd[10] = type | (agid << 6); 1596 switch (type) { 1597 case 0: case 8: case 5: { 1598 cgc->buflen = 8; 1599 break; 1600 } 1601 case 1: { 1602 cgc->buflen = 16; 1603 break; 1604 } 1605 case 2: case 4: { 1606 cgc->buflen = 12; 1607 break; 1608 } 1609 } 1610 cgc->cmd[9] = cgc->buflen; 1611 cgc->data_direction = CGC_DATA_READ; 1612 } 1613 1614 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) 1615 { 1616 cgc->cmd[0] = GPCMD_SEND_KEY; 1617 cgc->cmd[10] = type | (agid << 6); 1618 switch (type) { 1619 case 1: { 1620 cgc->buflen = 16; 1621 break; 1622 } 1623 case 3: { 1624 cgc->buflen = 12; 1625 break; 1626 } 1627 case 6: { 1628 cgc->buflen = 8; 1629 break; 1630 } 1631 } 1632 cgc->cmd[9] = cgc->buflen; 1633 cgc->data_direction = CGC_DATA_WRITE; 1634 } 1635 1636 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) 1637 { 1638 int ret; 1639 u_char buf[20]; 1640 struct packet_command cgc; 1641 const struct cdrom_device_ops *cdo = cdi->ops; 1642 rpc_state_t rpc_state; 1643 1644 memset(buf, 0, sizeof(buf)); 1645 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); 1646 1647 switch (ai->type) { 1648 /* LU data send */ 1649 case DVD_LU_SEND_AGID: 1650 cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n"); 1651 cgc.quiet = 1; 1652 setup_report_key(&cgc, ai->lsa.agid, 0); 1653 1654 if ((ret = cdo->generic_packet(cdi, &cgc))) 1655 return ret; 1656 1657 ai->lsa.agid = buf[7] >> 6; 1658 /* Returning data, let host change state */ 1659 break; 1660 1661 case DVD_LU_SEND_KEY1: 1662 cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); 1663 setup_report_key(&cgc, ai->lsk.agid, 2); 1664 1665 if ((ret = cdo->generic_packet(cdi, &cgc))) 1666 return ret; 1667 1668 copy_key(ai->lsk.key, &buf[4]); 1669 /* Returning data, let host change state */ 1670 break; 1671 1672 case DVD_LU_SEND_CHALLENGE: 1673 cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); 1674 setup_report_key(&cgc, ai->lsc.agid, 1); 1675 1676 if ((ret = cdo->generic_packet(cdi, &cgc))) 1677 return ret; 1678 1679 copy_chal(ai->lsc.chal, &buf[4]); 1680 /* Returning data, let host change state */ 1681 break; 1682 1683 /* Post-auth key */ 1684 case DVD_LU_SEND_TITLE_KEY: 1685 cd_dbg(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); 1686 cgc.quiet = 1; 1687 setup_report_key(&cgc, ai->lstk.agid, 4); 1688 cgc.cmd[5] = ai->lstk.lba; 1689 cgc.cmd[4] = ai->lstk.lba >> 8; 1690 cgc.cmd[3] = ai->lstk.lba >> 16; 1691 cgc.cmd[2] = ai->lstk.lba >> 24; 1692 1693 if ((ret = cdo->generic_packet(cdi, &cgc))) 1694 return ret; 1695 1696 ai->lstk.cpm = (buf[4] >> 7) & 1; 1697 ai->lstk.cp_sec = (buf[4] >> 6) & 1; 1698 ai->lstk.cgms = (buf[4] >> 4) & 3; 1699 copy_key(ai->lstk.title_key, &buf[5]); 1700 /* Returning data, let host change state */ 1701 break; 1702 1703 case DVD_LU_SEND_ASF: 1704 cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n"); 1705 setup_report_key(&cgc, ai->lsasf.agid, 5); 1706 1707 if ((ret = cdo->generic_packet(cdi, &cgc))) 1708 return ret; 1709 1710 ai->lsasf.asf = buf[7] & 1; 1711 break; 1712 1713 /* LU data receive (LU changes state) */ 1714 case DVD_HOST_SEND_CHALLENGE: 1715 cd_dbg(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); 1716 setup_send_key(&cgc, ai->hsc.agid, 1); 1717 buf[1] = 0xe; 1718 copy_chal(&buf[4], ai->hsc.chal); 1719 1720 if ((ret = cdo->generic_packet(cdi, &cgc))) 1721 return ret; 1722 1723 ai->type = DVD_LU_SEND_KEY1; 1724 break; 1725 1726 case DVD_HOST_SEND_KEY2: 1727 cd_dbg(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); 1728 setup_send_key(&cgc, ai->hsk.agid, 3); 1729 buf[1] = 0xa; 1730 copy_key(&buf[4], ai->hsk.key); 1731 1732 if ((ret = cdo->generic_packet(cdi, &cgc))) { 1733 ai->type = DVD_AUTH_FAILURE; 1734 return ret; 1735 } 1736 ai->type = DVD_AUTH_ESTABLISHED; 1737 break; 1738 1739 /* Misc */ 1740 case DVD_INVALIDATE_AGID: 1741 cgc.quiet = 1; 1742 cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); 1743 setup_report_key(&cgc, ai->lsa.agid, 0x3f); 1744 if ((ret = cdo->generic_packet(cdi, &cgc))) 1745 return ret; 1746 break; 1747 1748 /* Get region settings */ 1749 case DVD_LU_SEND_RPC_STATE: 1750 cd_dbg(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); 1751 setup_report_key(&cgc, 0, 8); 1752 memset(&rpc_state, 0, sizeof(rpc_state_t)); 1753 cgc.buffer = (char *) &rpc_state; 1754 1755 if ((ret = cdo->generic_packet(cdi, &cgc))) 1756 return ret; 1757 1758 ai->lrpcs.type = rpc_state.type_code; 1759 ai->lrpcs.vra = rpc_state.vra; 1760 ai->lrpcs.ucca = rpc_state.ucca; 1761 ai->lrpcs.region_mask = rpc_state.region_mask; 1762 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; 1763 break; 1764 1765 /* Set region settings */ 1766 case DVD_HOST_SEND_RPC_STATE: 1767 cd_dbg(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); 1768 setup_send_key(&cgc, 0, 6); 1769 buf[1] = 6; 1770 buf[4] = ai->hrpcs.pdrc; 1771 1772 if ((ret = cdo->generic_packet(cdi, &cgc))) 1773 return ret; 1774 break; 1775 1776 default: 1777 cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); 1778 return -ENOTTY; 1779 } 1780 1781 return 0; 1782 } 1783 1784 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s, 1785 struct packet_command *cgc) 1786 { 1787 unsigned char buf[21], *base; 1788 struct dvd_layer *layer; 1789 const struct cdrom_device_ops *cdo = cdi->ops; 1790 int ret, layer_num = s->physical.layer_num; 1791 1792 if (layer_num >= DVD_LAYERS) 1793 return -EINVAL; 1794 1795 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); 1796 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; 1797 cgc->cmd[6] = layer_num; 1798 cgc->cmd[7] = s->type; 1799 cgc->cmd[9] = cgc->buflen & 0xff; 1800 1801 /* 1802 * refrain from reporting errors on non-existing layers (mainly) 1803 */ 1804 cgc->quiet = 1; 1805 1806 ret = cdo->generic_packet(cdi, cgc); 1807 if (ret) 1808 return ret; 1809 1810 base = &buf[4]; 1811 layer = &s->physical.layer[layer_num]; 1812 1813 /* 1814 * place the data... really ugly, but at least we won't have to 1815 * worry about endianess in userspace. 1816 */ 1817 memset(layer, 0, sizeof(*layer)); 1818 layer->book_version = base[0] & 0xf; 1819 layer->book_type = base[0] >> 4; 1820 layer->min_rate = base[1] & 0xf; 1821 layer->disc_size = base[1] >> 4; 1822 layer->layer_type = base[2] & 0xf; 1823 layer->track_path = (base[2] >> 4) & 1; 1824 layer->nlayers = (base[2] >> 5) & 3; 1825 layer->track_density = base[3] & 0xf; 1826 layer->linear_density = base[3] >> 4; 1827 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; 1828 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; 1829 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; 1830 layer->bca = base[16] >> 7; 1831 1832 return 0; 1833 } 1834 1835 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s, 1836 struct packet_command *cgc) 1837 { 1838 int ret; 1839 u_char buf[8]; 1840 const struct cdrom_device_ops *cdo = cdi->ops; 1841 1842 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); 1843 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; 1844 cgc->cmd[6] = s->copyright.layer_num; 1845 cgc->cmd[7] = s->type; 1846 cgc->cmd[8] = cgc->buflen >> 8; 1847 cgc->cmd[9] = cgc->buflen & 0xff; 1848 1849 ret = cdo->generic_packet(cdi, cgc); 1850 if (ret) 1851 return ret; 1852 1853 s->copyright.cpst = buf[4]; 1854 s->copyright.rmi = buf[5]; 1855 1856 return 0; 1857 } 1858 1859 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s, 1860 struct packet_command *cgc) 1861 { 1862 int ret, size; 1863 u_char *buf; 1864 const struct cdrom_device_ops *cdo = cdi->ops; 1865 1866 size = sizeof(s->disckey.value) + 4; 1867 1868 buf = kmalloc(size, GFP_KERNEL); 1869 if (!buf) 1870 return -ENOMEM; 1871 1872 init_cdrom_command(cgc, buf, size, CGC_DATA_READ); 1873 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; 1874 cgc->cmd[7] = s->type; 1875 cgc->cmd[8] = size >> 8; 1876 cgc->cmd[9] = size & 0xff; 1877 cgc->cmd[10] = s->disckey.agid << 6; 1878 1879 ret = cdo->generic_packet(cdi, cgc); 1880 if (!ret) 1881 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); 1882 1883 kfree(buf); 1884 return ret; 1885 } 1886 1887 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, 1888 struct packet_command *cgc) 1889 { 1890 int ret, size = 4 + 188; 1891 u_char *buf; 1892 const struct cdrom_device_ops *cdo = cdi->ops; 1893 1894 buf = kmalloc(size, GFP_KERNEL); 1895 if (!buf) 1896 return -ENOMEM; 1897 1898 init_cdrom_command(cgc, buf, size, CGC_DATA_READ); 1899 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; 1900 cgc->cmd[7] = s->type; 1901 cgc->cmd[9] = cgc->buflen & 0xff; 1902 1903 ret = cdo->generic_packet(cdi, cgc); 1904 if (ret) 1905 goto out; 1906 1907 s->bca.len = buf[0] << 8 | buf[1]; 1908 if (s->bca.len < 12 || s->bca.len > 188) { 1909 cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n", 1910 s->bca.len); 1911 ret = -EIO; 1912 goto out; 1913 } 1914 memcpy(s->bca.value, &buf[4], s->bca.len); 1915 ret = 0; 1916 out: 1917 kfree(buf); 1918 return ret; 1919 } 1920 1921 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, 1922 struct packet_command *cgc) 1923 { 1924 int ret = 0, size; 1925 u_char *buf; 1926 const struct cdrom_device_ops *cdo = cdi->ops; 1927 1928 size = sizeof(s->manufact.value) + 4; 1929 1930 buf = kmalloc(size, GFP_KERNEL); 1931 if (!buf) 1932 return -ENOMEM; 1933 1934 init_cdrom_command(cgc, buf, size, CGC_DATA_READ); 1935 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; 1936 cgc->cmd[7] = s->type; 1937 cgc->cmd[8] = size >> 8; 1938 cgc->cmd[9] = size & 0xff; 1939 1940 ret = cdo->generic_packet(cdi, cgc); 1941 if (ret) 1942 goto out; 1943 1944 s->manufact.len = buf[0] << 8 | buf[1]; 1945 if (s->manufact.len < 0) { 1946 cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n", 1947 s->manufact.len); 1948 ret = -EIO; 1949 } else { 1950 if (s->manufact.len > 2048) { 1951 cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d): truncating to 2048\n", 1952 s->manufact.len); 1953 s->manufact.len = 2048; 1954 } 1955 memcpy(s->manufact.value, &buf[4], s->manufact.len); 1956 } 1957 1958 out: 1959 kfree(buf); 1960 return ret; 1961 } 1962 1963 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s, 1964 struct packet_command *cgc) 1965 { 1966 switch (s->type) { 1967 case DVD_STRUCT_PHYSICAL: 1968 return dvd_read_physical(cdi, s, cgc); 1969 1970 case DVD_STRUCT_COPYRIGHT: 1971 return dvd_read_copyright(cdi, s, cgc); 1972 1973 case DVD_STRUCT_DISCKEY: 1974 return dvd_read_disckey(cdi, s, cgc); 1975 1976 case DVD_STRUCT_BCA: 1977 return dvd_read_bca(cdi, s, cgc); 1978 1979 case DVD_STRUCT_MANUFACT: 1980 return dvd_read_manufact(cdi, s, cgc); 1981 1982 default: 1983 cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", 1984 s->type); 1985 return -EINVAL; 1986 } 1987 } 1988 1989 int cdrom_mode_sense(struct cdrom_device_info *cdi, 1990 struct packet_command *cgc, 1991 int page_code, int page_control) 1992 { 1993 const struct cdrom_device_ops *cdo = cdi->ops; 1994 1995 memset(cgc->cmd, 0, sizeof(cgc->cmd)); 1996 1997 cgc->cmd[0] = GPCMD_MODE_SENSE_10; 1998 cgc->cmd[2] = page_code | (page_control << 6); 1999 cgc->cmd[7] = cgc->buflen >> 8; 2000 cgc->cmd[8] = cgc->buflen & 0xff; 2001 cgc->data_direction = CGC_DATA_READ; 2002 return cdo->generic_packet(cdi, cgc); 2003 } 2004 2005 int cdrom_mode_select(struct cdrom_device_info *cdi, 2006 struct packet_command *cgc) 2007 { 2008 const struct cdrom_device_ops *cdo = cdi->ops; 2009 2010 memset(cgc->cmd, 0, sizeof(cgc->cmd)); 2011 memset(cgc->buffer, 0, 2); 2012 cgc->cmd[0] = GPCMD_MODE_SELECT_10; 2013 cgc->cmd[1] = 0x10; /* PF */ 2014 cgc->cmd[7] = cgc->buflen >> 8; 2015 cgc->cmd[8] = cgc->buflen & 0xff; 2016 cgc->data_direction = CGC_DATA_WRITE; 2017 return cdo->generic_packet(cdi, cgc); 2018 } 2019 2020 static int cdrom_read_subchannel(struct cdrom_device_info *cdi, 2021 struct cdrom_subchnl *subchnl, int mcn) 2022 { 2023 const struct cdrom_device_ops *cdo = cdi->ops; 2024 struct packet_command cgc; 2025 char buffer[32]; 2026 int ret; 2027 2028 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); 2029 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; 2030 cgc.cmd[1] = subchnl->cdsc_format;/* MSF or LBA addressing */ 2031 cgc.cmd[2] = 0x40; /* request subQ data */ 2032 cgc.cmd[3] = mcn ? 2 : 1; 2033 cgc.cmd[8] = 16; 2034 2035 if ((ret = cdo->generic_packet(cdi, &cgc))) 2036 return ret; 2037 2038 subchnl->cdsc_audiostatus = cgc.buffer[1]; 2039 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; 2040 subchnl->cdsc_trk = cgc.buffer[6]; 2041 subchnl->cdsc_ind = cgc.buffer[7]; 2042 2043 if (subchnl->cdsc_format == CDROM_LBA) { 2044 subchnl->cdsc_absaddr.lba = ((cgc.buffer[8] << 24) | 2045 (cgc.buffer[9] << 16) | 2046 (cgc.buffer[10] << 8) | 2047 (cgc.buffer[11])); 2048 subchnl->cdsc_reladdr.lba = ((cgc.buffer[12] << 24) | 2049 (cgc.buffer[13] << 16) | 2050 (cgc.buffer[14] << 8) | 2051 (cgc.buffer[15])); 2052 } else { 2053 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; 2054 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; 2055 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; 2056 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; 2057 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; 2058 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; 2059 } 2060 2061 return 0; 2062 } 2063 2064 /* 2065 * Specific READ_10 interface 2066 */ 2067 static int cdrom_read_cd(struct cdrom_device_info *cdi, 2068 struct packet_command *cgc, int lba, 2069 int blocksize, int nblocks) 2070 { 2071 const struct cdrom_device_ops *cdo = cdi->ops; 2072 2073 memset(&cgc->cmd, 0, sizeof(cgc->cmd)); 2074 cgc->cmd[0] = GPCMD_READ_10; 2075 cgc->cmd[2] = (lba >> 24) & 0xff; 2076 cgc->cmd[3] = (lba >> 16) & 0xff; 2077 cgc->cmd[4] = (lba >> 8) & 0xff; 2078 cgc->cmd[5] = lba & 0xff; 2079 cgc->cmd[6] = (nblocks >> 16) & 0xff; 2080 cgc->cmd[7] = (nblocks >> 8) & 0xff; 2081 cgc->cmd[8] = nblocks & 0xff; 2082 cgc->buflen = blocksize * nblocks; 2083 return cdo->generic_packet(cdi, cgc); 2084 } 2085 2086 /* very generic interface for reading the various types of blocks */ 2087 static int cdrom_read_block(struct cdrom_device_info *cdi, 2088 struct packet_command *cgc, 2089 int lba, int nblocks, int format, int blksize) 2090 { 2091 const struct cdrom_device_ops *cdo = cdi->ops; 2092 2093 memset(&cgc->cmd, 0, sizeof(cgc->cmd)); 2094 cgc->cmd[0] = GPCMD_READ_CD; 2095 /* expected sector size - cdda,mode1,etc. */ 2096 cgc->cmd[1] = format << 2; 2097 /* starting address */ 2098 cgc->cmd[2] = (lba >> 24) & 0xff; 2099 cgc->cmd[3] = (lba >> 16) & 0xff; 2100 cgc->cmd[4] = (lba >> 8) & 0xff; 2101 cgc->cmd[5] = lba & 0xff; 2102 /* number of blocks */ 2103 cgc->cmd[6] = (nblocks >> 16) & 0xff; 2104 cgc->cmd[7] = (nblocks >> 8) & 0xff; 2105 cgc->cmd[8] = nblocks & 0xff; 2106 cgc->buflen = blksize * nblocks; 2107 2108 /* set the header info returned */ 2109 switch (blksize) { 2110 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; 2111 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; 2112 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; 2113 default : cgc->cmd[9] = 0x10; 2114 } 2115 2116 return cdo->generic_packet(cdi, cgc); 2117 } 2118 2119 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, 2120 int lba, int nframes) 2121 { 2122 struct packet_command cgc; 2123 int ret = 0; 2124 int nr; 2125 2126 cdi->last_sense = 0; 2127 2128 memset(&cgc, 0, sizeof(cgc)); 2129 2130 /* 2131 * start with will ra.nframes size, back down if alloc fails 2132 */ 2133 nr = nframes; 2134 do { 2135 cgc.buffer = kmalloc_array(nr, CD_FRAMESIZE_RAW, GFP_KERNEL); 2136 if (cgc.buffer) 2137 break; 2138 2139 nr >>= 1; 2140 } while (nr); 2141 2142 if (!nr) 2143 return -ENOMEM; 2144 2145 cgc.data_direction = CGC_DATA_READ; 2146 while (nframes > 0) { 2147 if (nr > nframes) 2148 nr = nframes; 2149 2150 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); 2151 if (ret) 2152 break; 2153 if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { 2154 ret = -EFAULT; 2155 break; 2156 } 2157 ubuf += CD_FRAMESIZE_RAW * nr; 2158 nframes -= nr; 2159 lba += nr; 2160 } 2161 kfree(cgc.buffer); 2162 return ret; 2163 } 2164 2165 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, 2166 int lba, int nframes) 2167 { 2168 struct request_queue *q = cdi->disk->queue; 2169 struct request *rq; 2170 struct scsi_request *req; 2171 struct bio *bio; 2172 unsigned int len; 2173 int nr, ret = 0; 2174 2175 if (!q) 2176 return -ENXIO; 2177 2178 if (!blk_queue_scsi_passthrough(q)) { 2179 WARN_ONCE(true, 2180 "Attempt read CDDA info through a non-SCSI queue\n"); 2181 return -EINVAL; 2182 } 2183 2184 cdi->last_sense = 0; 2185 2186 while (nframes) { 2187 nr = nframes; 2188 if (cdi->cdda_method == CDDA_BPC_SINGLE) 2189 nr = 1; 2190 if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9)) 2191 nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW; 2192 2193 len = nr * CD_FRAMESIZE_RAW; 2194 2195 rq = blk_get_request(q, REQ_OP_SCSI_IN, 0); 2196 if (IS_ERR(rq)) { 2197 ret = PTR_ERR(rq); 2198 break; 2199 } 2200 req = scsi_req(rq); 2201 2202 ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL); 2203 if (ret) { 2204 blk_put_request(rq); 2205 break; 2206 } 2207 2208 req->cmd[0] = GPCMD_READ_CD; 2209 req->cmd[1] = 1 << 2; 2210 req->cmd[2] = (lba >> 24) & 0xff; 2211 req->cmd[3] = (lba >> 16) & 0xff; 2212 req->cmd[4] = (lba >> 8) & 0xff; 2213 req->cmd[5] = lba & 0xff; 2214 req->cmd[6] = (nr >> 16) & 0xff; 2215 req->cmd[7] = (nr >> 8) & 0xff; 2216 req->cmd[8] = nr & 0xff; 2217 req->cmd[9] = 0xf8; 2218 2219 req->cmd_len = 12; 2220 rq->timeout = 60 * HZ; 2221 bio = rq->bio; 2222 2223 blk_execute_rq(q, cdi->disk, rq, 0); 2224 if (scsi_req(rq)->result) { 2225 struct request_sense *s = req->sense; 2226 ret = -EIO; 2227 cdi->last_sense = s->sense_key; 2228 } 2229 2230 if (blk_rq_unmap_user(bio)) 2231 ret = -EFAULT; 2232 blk_put_request(rq); 2233 2234 if (ret) 2235 break; 2236 2237 nframes -= nr; 2238 lba += nr; 2239 ubuf += len; 2240 } 2241 2242 return ret; 2243 } 2244 2245 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, 2246 int lba, int nframes) 2247 { 2248 int ret; 2249 2250 if (cdi->cdda_method == CDDA_OLD) 2251 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); 2252 2253 retry: 2254 /* 2255 * for anything else than success and io error, we need to retry 2256 */ 2257 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); 2258 if (!ret || ret != -EIO) 2259 return ret; 2260 2261 /* 2262 * I've seen drives get sense 4/8/3 udma crc errors on multi 2263 * frame dma, so drop to single frame dma if we need to 2264 */ 2265 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { 2266 pr_info("dropping to single frame dma\n"); 2267 cdi->cdda_method = CDDA_BPC_SINGLE; 2268 goto retry; 2269 } 2270 2271 /* 2272 * so we have an io error of some sort with multi frame dma. if the 2273 * condition wasn't a hardware error 2274 * problems, not for any error 2275 */ 2276 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) 2277 return ret; 2278 2279 pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense); 2280 cdi->cdda_method = CDDA_OLD; 2281 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); 2282 } 2283 2284 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, 2285 void __user *argp) 2286 { 2287 struct cdrom_multisession ms_info; 2288 u8 requested_format; 2289 int ret; 2290 2291 cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); 2292 2293 if (!(cdi->ops->capability & CDC_MULTI_SESSION)) 2294 return -ENOSYS; 2295 2296 if (copy_from_user(&ms_info, argp, sizeof(ms_info))) 2297 return -EFAULT; 2298 2299 requested_format = ms_info.addr_format; 2300 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) 2301 return -EINVAL; 2302 ms_info.addr_format = CDROM_LBA; 2303 2304 ret = cdi->ops->get_last_session(cdi, &ms_info); 2305 if (ret) 2306 return ret; 2307 2308 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); 2309 2310 if (copy_to_user(argp, &ms_info, sizeof(ms_info))) 2311 return -EFAULT; 2312 2313 cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); 2314 return 0; 2315 } 2316 2317 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) 2318 { 2319 cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n"); 2320 2321 if (!CDROM_CAN(CDC_OPEN_TRAY)) 2322 return -ENOSYS; 2323 if (cdi->use_count != 1 || cdi->keeplocked) 2324 return -EBUSY; 2325 if (CDROM_CAN(CDC_LOCK)) { 2326 int ret = cdi->ops->lock_door(cdi, 0); 2327 if (ret) 2328 return ret; 2329 } 2330 2331 return cdi->ops->tray_move(cdi, 1); 2332 } 2333 2334 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) 2335 { 2336 cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); 2337 2338 if (!CDROM_CAN(CDC_CLOSE_TRAY)) 2339 return -ENOSYS; 2340 return cdi->ops->tray_move(cdi, 0); 2341 } 2342 2343 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, 2344 unsigned long arg) 2345 { 2346 cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); 2347 2348 if (!CDROM_CAN(CDC_OPEN_TRAY)) 2349 return -ENOSYS; 2350 if (cdi->keeplocked) 2351 return -EBUSY; 2352 2353 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); 2354 if (arg) 2355 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; 2356 return 0; 2357 } 2358 2359 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, 2360 unsigned long arg) 2361 { 2362 struct cdrom_changer_info *info; 2363 int ret; 2364 2365 cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); 2366 2367 if (!CDROM_CAN(CDC_MEDIA_CHANGED)) 2368 return -ENOSYS; 2369 2370 /* cannot select disc or select current disc */ 2371 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) 2372 return media_changed(cdi, 1); 2373 2374 if (arg >= cdi->capacity) 2375 return -EINVAL; 2376 2377 info = kmalloc(sizeof(*info), GFP_KERNEL); 2378 if (!info) 2379 return -ENOMEM; 2380 2381 ret = cdrom_read_mech_status(cdi, info); 2382 if (!ret) 2383 ret = info->slots[arg].change; 2384 kfree(info); 2385 return ret; 2386 } 2387 2388 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, 2389 unsigned long arg) 2390 { 2391 cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); 2392 2393 /* 2394 * Options need to be in sync with capability. 2395 * Too late for that, so we have to check each one separately. 2396 */ 2397 switch (arg) { 2398 case CDO_USE_FFLAGS: 2399 case CDO_CHECK_TYPE: 2400 break; 2401 case CDO_LOCK: 2402 if (!CDROM_CAN(CDC_LOCK)) 2403 return -ENOSYS; 2404 break; 2405 case 0: 2406 return cdi->options; 2407 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ 2408 default: 2409 if (!CDROM_CAN(arg)) 2410 return -ENOSYS; 2411 } 2412 cdi->options |= (int) arg; 2413 return cdi->options; 2414 } 2415 2416 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, 2417 unsigned long arg) 2418 { 2419 cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); 2420 2421 cdi->options &= ~(int) arg; 2422 return cdi->options; 2423 } 2424 2425 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, 2426 unsigned long arg) 2427 { 2428 cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); 2429 2430 if (!CDROM_CAN(CDC_SELECT_SPEED)) 2431 return -ENOSYS; 2432 return cdi->ops->select_speed(cdi, arg); 2433 } 2434 2435 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, 2436 unsigned long arg) 2437 { 2438 cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); 2439 2440 if (!CDROM_CAN(CDC_SELECT_DISC)) 2441 return -ENOSYS; 2442 2443 if (arg != CDSL_CURRENT && arg != CDSL_NONE) { 2444 if ((int)arg >= cdi->capacity) 2445 return -EINVAL; 2446 } 2447 2448 /* 2449 * ->select_disc is a hook to allow a driver-specific way of 2450 * seleting disc. However, since there is no equivalent hook for 2451 * cdrom_slot_status this may not actually be useful... 2452 */ 2453 if (cdi->ops->select_disc) 2454 return cdi->ops->select_disc(cdi, arg); 2455 2456 cd_dbg(CD_CHANGER, "Using generic cdrom_select_disc()\n"); 2457 return cdrom_select_disc(cdi, arg); 2458 } 2459 2460 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, 2461 struct block_device *bdev) 2462 { 2463 cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n"); 2464 2465 if (!capable(CAP_SYS_ADMIN)) 2466 return -EACCES; 2467 if (!CDROM_CAN(CDC_RESET)) 2468 return -ENOSYS; 2469 invalidate_bdev(bdev); 2470 return cdi->ops->reset(cdi); 2471 } 2472 2473 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, 2474 unsigned long arg) 2475 { 2476 cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl"); 2477 2478 if (!CDROM_CAN(CDC_LOCK)) 2479 return -EDRIVE_CANT_DO_THIS; 2480 2481 cdi->keeplocked = arg ? 1 : 0; 2482 2483 /* 2484 * Don't unlock the door on multiple opens by default, but allow 2485 * root to do so. 2486 */ 2487 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) 2488 return -EBUSY; 2489 return cdi->ops->lock_door(cdi, arg); 2490 } 2491 2492 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, 2493 unsigned long arg) 2494 { 2495 cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis"); 2496 2497 if (!capable(CAP_SYS_ADMIN)) 2498 return -EACCES; 2499 debug = arg ? 1 : 0; 2500 return debug; 2501 } 2502 2503 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) 2504 { 2505 cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); 2506 return (cdi->ops->capability & ~cdi->mask); 2507 } 2508 2509 /* 2510 * The following function is implemented, although very few audio 2511 * discs give Universal Product Code information, which should just be 2512 * the Medium Catalog Number on the box. Note, that the way the code 2513 * is written on the CD is /not/ uniform across all discs! 2514 */ 2515 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, 2516 void __user *argp) 2517 { 2518 struct cdrom_mcn mcn; 2519 int ret; 2520 2521 cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); 2522 2523 if (!(cdi->ops->capability & CDC_MCN)) 2524 return -ENOSYS; 2525 ret = cdi->ops->get_mcn(cdi, &mcn); 2526 if (ret) 2527 return ret; 2528 2529 if (copy_to_user(argp, &mcn, sizeof(mcn))) 2530 return -EFAULT; 2531 cd_dbg(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); 2532 return 0; 2533 } 2534 2535 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, 2536 unsigned long arg) 2537 { 2538 cd_dbg(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); 2539 2540 if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) 2541 return -ENOSYS; 2542 if (!CDROM_CAN(CDC_SELECT_DISC) || 2543 (arg == CDSL_CURRENT || arg == CDSL_NONE)) 2544 return cdi->ops->drive_status(cdi, CDSL_CURRENT); 2545 if (((int)arg >= cdi->capacity)) 2546 return -EINVAL; 2547 return cdrom_slot_status(cdi, arg); 2548 } 2549 2550 /* 2551 * Ok, this is where problems start. The current interface for the 2552 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that 2553 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this 2554 * is often the case, it is also very common for CDs to have some tracks 2555 * with data, and some tracks with audio. Just because I feel like it, 2556 * I declare the following to be the best way to cope. If the CD has ANY 2557 * data tracks on it, it will be returned as a data CD. If it has any XA 2558 * tracks, I will return it as that. Now I could simplify this interface 2559 * by combining these returns with the above, but this more clearly 2560 * demonstrates the problem with the current interface. Too bad this 2561 * wasn't designed to use bitmasks... -Erik 2562 * 2563 * Well, now we have the option CDS_MIXED: a mixed-type CD. 2564 * User level programmers might feel the ioctl is not very useful. 2565 * ---david 2566 */ 2567 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) 2568 { 2569 tracktype tracks; 2570 2571 cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); 2572 2573 cdrom_count_tracks(cdi, &tracks); 2574 if (tracks.error) 2575 return tracks.error; 2576 2577 /* Policy mode on */ 2578 if (tracks.audio > 0) { 2579 if (!tracks.data && !tracks.cdi && !tracks.xa) 2580 return CDS_AUDIO; 2581 else 2582 return CDS_MIXED; 2583 } 2584 2585 if (tracks.cdi > 0) 2586 return CDS_XA_2_2; 2587 if (tracks.xa > 0) 2588 return CDS_XA_2_1; 2589 if (tracks.data > 0) 2590 return CDS_DATA_1; 2591 /* Policy mode off */ 2592 2593 cd_dbg(CD_WARNING, "This disc doesn't have any tracks I recognize!\n"); 2594 return CDS_NO_INFO; 2595 } 2596 2597 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) 2598 { 2599 cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); 2600 return cdi->capacity; 2601 } 2602 2603 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, 2604 void __user *argp) 2605 { 2606 struct cdrom_subchnl q; 2607 u8 requested, back; 2608 int ret; 2609 2610 /* cd_dbg(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ 2611 2612 if (copy_from_user(&q, argp, sizeof(q))) 2613 return -EFAULT; 2614 2615 requested = q.cdsc_format; 2616 if (requested != CDROM_MSF && requested != CDROM_LBA) 2617 return -EINVAL; 2618 q.cdsc_format = CDROM_MSF; 2619 2620 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); 2621 if (ret) 2622 return ret; 2623 2624 back = q.cdsc_format; /* local copy */ 2625 sanitize_format(&q.cdsc_absaddr, &back, requested); 2626 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); 2627 2628 if (copy_to_user(argp, &q, sizeof(q))) 2629 return -EFAULT; 2630 /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ 2631 return 0; 2632 } 2633 2634 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, 2635 void __user *argp) 2636 { 2637 struct cdrom_tochdr header; 2638 int ret; 2639 2640 /* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ 2641 2642 if (copy_from_user(&header, argp, sizeof(header))) 2643 return -EFAULT; 2644 2645 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); 2646 if (ret) 2647 return ret; 2648 2649 if (copy_to_user(argp, &header, sizeof(header))) 2650 return -EFAULT; 2651 /* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ 2652 return 0; 2653 } 2654 2655 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, 2656 void __user *argp) 2657 { 2658 struct cdrom_tocentry entry; 2659 u8 requested_format; 2660 int ret; 2661 2662 /* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ 2663 2664 if (copy_from_user(&entry, argp, sizeof(entry))) 2665 return -EFAULT; 2666 2667 requested_format = entry.cdte_format; 2668 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) 2669 return -EINVAL; 2670 /* make interface to low-level uniform */ 2671 entry.cdte_format = CDROM_MSF; 2672 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry); 2673 if (ret) 2674 return ret; 2675 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); 2676 2677 if (copy_to_user(argp, &entry, sizeof(entry))) 2678 return -EFAULT; 2679 /* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ 2680 return 0; 2681 } 2682 2683 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, 2684 void __user *argp) 2685 { 2686 struct cdrom_msf msf; 2687 2688 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); 2689 2690 if (!CDROM_CAN(CDC_PLAY_AUDIO)) 2691 return -ENOSYS; 2692 if (copy_from_user(&msf, argp, sizeof(msf))) 2693 return -EFAULT; 2694 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); 2695 } 2696 2697 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, 2698 void __user *argp) 2699 { 2700 struct cdrom_ti ti; 2701 int ret; 2702 2703 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); 2704 2705 if (!CDROM_CAN(CDC_PLAY_AUDIO)) 2706 return -ENOSYS; 2707 if (copy_from_user(&ti, argp, sizeof(ti))) 2708 return -EFAULT; 2709 2710 ret = check_for_audio_disc(cdi, cdi->ops); 2711 if (ret) 2712 return ret; 2713 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); 2714 } 2715 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, 2716 void __user *argp) 2717 { 2718 struct cdrom_volctrl volume; 2719 2720 cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); 2721 2722 if (!CDROM_CAN(CDC_PLAY_AUDIO)) 2723 return -ENOSYS; 2724 if (copy_from_user(&volume, argp, sizeof(volume))) 2725 return -EFAULT; 2726 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); 2727 } 2728 2729 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, 2730 void __user *argp) 2731 { 2732 struct cdrom_volctrl volume; 2733 int ret; 2734 2735 cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); 2736 2737 if (!CDROM_CAN(CDC_PLAY_AUDIO)) 2738 return -ENOSYS; 2739 2740 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); 2741 if (ret) 2742 return ret; 2743 2744 if (copy_to_user(argp, &volume, sizeof(volume))) 2745 return -EFAULT; 2746 return 0; 2747 } 2748 2749 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, 2750 unsigned int cmd) 2751 { 2752 int ret; 2753 2754 cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); 2755 2756 if (!CDROM_CAN(CDC_PLAY_AUDIO)) 2757 return -ENOSYS; 2758 ret = check_for_audio_disc(cdi, cdi->ops); 2759 if (ret) 2760 return ret; 2761 return cdi->ops->audio_ioctl(cdi, cmd, NULL); 2762 } 2763 2764 /* 2765 * Required when we need to use READ_10 to issue other than 2048 block 2766 * reads 2767 */ 2768 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) 2769 { 2770 const struct cdrom_device_ops *cdo = cdi->ops; 2771 struct packet_command cgc; 2772 struct modesel_head mh; 2773 2774 memset(&mh, 0, sizeof(mh)); 2775 mh.block_desc_length = 0x08; 2776 mh.block_length_med = (size >> 8) & 0xff; 2777 mh.block_length_lo = size & 0xff; 2778 2779 memset(&cgc, 0, sizeof(cgc)); 2780 cgc.cmd[0] = 0x15; 2781 cgc.cmd[1] = 1 << 4; 2782 cgc.cmd[4] = 12; 2783 cgc.buflen = sizeof(mh); 2784 cgc.buffer = (char *) &mh; 2785 cgc.data_direction = CGC_DATA_WRITE; 2786 mh.block_desc_length = 0x08; 2787 mh.block_length_med = (size >> 8) & 0xff; 2788 mh.block_length_lo = size & 0xff; 2789 2790 return cdo->generic_packet(cdi, &cgc); 2791 } 2792 2793 static int cdrom_get_track_info(struct cdrom_device_info *cdi, 2794 __u16 track, __u8 type, track_information *ti) 2795 { 2796 const struct cdrom_device_ops *cdo = cdi->ops; 2797 struct packet_command cgc; 2798 int ret, buflen; 2799 2800 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); 2801 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; 2802 cgc.cmd[1] = type & 3; 2803 cgc.cmd[4] = (track & 0xff00) >> 8; 2804 cgc.cmd[5] = track & 0xff; 2805 cgc.cmd[8] = 8; 2806 cgc.quiet = 1; 2807 2808 ret = cdo->generic_packet(cdi, &cgc); 2809 if (ret) 2810 return ret; 2811 2812 buflen = be16_to_cpu(ti->track_information_length) + 2813 sizeof(ti->track_information_length); 2814 2815 if (buflen > sizeof(track_information)) 2816 buflen = sizeof(track_information); 2817 2818 cgc.cmd[8] = cgc.buflen = buflen; 2819 ret = cdo->generic_packet(cdi, &cgc); 2820 if (ret) 2821 return ret; 2822 2823 /* return actual fill size */ 2824 return buflen; 2825 } 2826 2827 /* return the last written block on the CD-R media. this is for the udf 2828 file system. */ 2829 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) 2830 { 2831 struct cdrom_tocentry toc; 2832 disc_information di; 2833 track_information ti; 2834 __u32 last_track; 2835 int ret = -1, ti_size; 2836 2837 if (!CDROM_CAN(CDC_GENERIC_PACKET)) 2838 goto use_toc; 2839 2840 ret = cdrom_get_disc_info(cdi, &di); 2841 if (ret < (int)(offsetof(typeof(di), last_track_lsb) 2842 + sizeof(di.last_track_lsb))) 2843 goto use_toc; 2844 2845 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ 2846 last_track = (di.last_track_msb << 8) | di.last_track_lsb; 2847 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); 2848 if (ti_size < (int)offsetof(typeof(ti), track_start)) 2849 goto use_toc; 2850 2851 /* if this track is blank, try the previous. */ 2852 if (ti.blank) { 2853 if (last_track == 1) 2854 goto use_toc; 2855 last_track--; 2856 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); 2857 } 2858 2859 if (ti_size < (int)(offsetof(typeof(ti), track_size) 2860 + sizeof(ti.track_size))) 2861 goto use_toc; 2862 2863 /* if last recorded field is valid, return it. */ 2864 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) 2865 + sizeof(ti.last_rec_address))) { 2866 *last_written = be32_to_cpu(ti.last_rec_address); 2867 } else { 2868 /* make it up instead */ 2869 *last_written = be32_to_cpu(ti.track_start) + 2870 be32_to_cpu(ti.track_size); 2871 if (ti.free_blocks) 2872 *last_written -= (be32_to_cpu(ti.free_blocks) + 7); 2873 } 2874 return 0; 2875 2876 /* this is where we end up if the drive either can't do a 2877 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if 2878 it doesn't give enough information or fails. then we return 2879 the toc contents. */ 2880 use_toc: 2881 toc.cdte_format = CDROM_MSF; 2882 toc.cdte_track = CDROM_LEADOUT; 2883 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) 2884 return ret; 2885 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); 2886 *last_written = toc.cdte_addr.lba; 2887 return 0; 2888 } 2889 2890 /* return the next writable block. also for udf file system. */ 2891 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, 2892 long *next_writable) 2893 { 2894 disc_information di; 2895 track_information ti; 2896 __u16 last_track; 2897 int ret, ti_size; 2898 2899 if (!CDROM_CAN(CDC_GENERIC_PACKET)) 2900 goto use_last_written; 2901 2902 ret = cdrom_get_disc_info(cdi, &di); 2903 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) 2904 + sizeof(di.last_track_lsb)) 2905 goto use_last_written; 2906 2907 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ 2908 last_track = (di.last_track_msb << 8) | di.last_track_lsb; 2909 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); 2910 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) 2911 goto use_last_written; 2912 2913 /* if this track is blank, try the previous. */ 2914 if (ti.blank) { 2915 if (last_track == 1) 2916 goto use_last_written; 2917 last_track--; 2918 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); 2919 if (ti_size < 0) 2920 goto use_last_written; 2921 } 2922 2923 /* if next recordable address field is valid, use it. */ 2924 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) 2925 + sizeof(ti.next_writable)) { 2926 *next_writable = be32_to_cpu(ti.next_writable); 2927 return 0; 2928 } 2929 2930 use_last_written: 2931 ret = cdrom_get_last_written(cdi, next_writable); 2932 if (ret) { 2933 *next_writable = 0; 2934 return ret; 2935 } else { 2936 *next_writable += 7; 2937 return 0; 2938 } 2939 } 2940 2941 static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, 2942 void __user *arg, 2943 struct packet_command *cgc, 2944 int cmd) 2945 { 2946 struct request_sense sense; 2947 struct cdrom_msf msf; 2948 int blocksize = 0, format = 0, lba; 2949 int ret; 2950 2951 switch (cmd) { 2952 case CDROMREADRAW: 2953 blocksize = CD_FRAMESIZE_RAW; 2954 break; 2955 case CDROMREADMODE1: 2956 blocksize = CD_FRAMESIZE; 2957 format = 2; 2958 break; 2959 case CDROMREADMODE2: 2960 blocksize = CD_FRAMESIZE_RAW0; 2961 break; 2962 } 2963 if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) 2964 return -EFAULT; 2965 lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0); 2966 /* FIXME: we need upper bound checking, too!! */ 2967 if (lba < 0) 2968 return -EINVAL; 2969 2970 cgc->buffer = kzalloc(blocksize, GFP_KERNEL); 2971 if (cgc->buffer == NULL) 2972 return -ENOMEM; 2973 2974 memset(&sense, 0, sizeof(sense)); 2975 cgc->sense = &sense; 2976 cgc->data_direction = CGC_DATA_READ; 2977 ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize); 2978 if (ret && sense.sense_key == 0x05 && 2979 sense.asc == 0x20 && 2980 sense.ascq == 0x00) { 2981 /* 2982 * SCSI-II devices are not required to support 2983 * READ_CD, so let's try switching block size 2984 */ 2985 /* FIXME: switch back again... */ 2986 ret = cdrom_switch_blocksize(cdi, blocksize); 2987 if (ret) 2988 goto out; 2989 cgc->sense = NULL; 2990 ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1); 2991 ret |= cdrom_switch_blocksize(cdi, blocksize); 2992 } 2993 if (!ret && copy_to_user(arg, cgc->buffer, blocksize)) 2994 ret = -EFAULT; 2995 out: 2996 kfree(cgc->buffer); 2997 return ret; 2998 } 2999 3000 static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, 3001 void __user *arg) 3002 { 3003 struct cdrom_read_audio ra; 3004 int lba; 3005 3006 if (copy_from_user(&ra, (struct cdrom_read_audio __user *)arg, 3007 sizeof(ra))) 3008 return -EFAULT; 3009 3010 if (ra.addr_format == CDROM_MSF) 3011 lba = msf_to_lba(ra.addr.msf.minute, 3012 ra.addr.msf.second, 3013 ra.addr.msf.frame); 3014 else if (ra.addr_format == CDROM_LBA) 3015 lba = ra.addr.lba; 3016 else 3017 return -EINVAL; 3018 3019 /* FIXME: we need upper bound checking, too!! */ 3020 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) 3021 return -EINVAL; 3022 3023 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); 3024 } 3025 3026 static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi, 3027 void __user *arg) 3028 { 3029 int ret; 3030 struct cdrom_subchnl q; 3031 u_char requested, back; 3032 if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q))) 3033 return -EFAULT; 3034 requested = q.cdsc_format; 3035 if (!((requested == CDROM_MSF) || 3036 (requested == CDROM_LBA))) 3037 return -EINVAL; 3038 3039 ret = cdrom_read_subchannel(cdi, &q, 0); 3040 if (ret) 3041 return ret; 3042 back = q.cdsc_format; /* local copy */ 3043 sanitize_format(&q.cdsc_absaddr, &back, requested); 3044 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); 3045 if (copy_to_user((struct cdrom_subchnl __user *)arg, &q, sizeof(q))) 3046 return -EFAULT; 3047 /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ 3048 return 0; 3049 } 3050 3051 static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi, 3052 void __user *arg, 3053 struct packet_command *cgc) 3054 { 3055 const struct cdrom_device_ops *cdo = cdi->ops; 3056 struct cdrom_msf msf; 3057 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); 3058 if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) 3059 return -EFAULT; 3060 cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF; 3061 cgc->cmd[3] = msf.cdmsf_min0; 3062 cgc->cmd[4] = msf.cdmsf_sec0; 3063 cgc->cmd[5] = msf.cdmsf_frame0; 3064 cgc->cmd[6] = msf.cdmsf_min1; 3065 cgc->cmd[7] = msf.cdmsf_sec1; 3066 cgc->cmd[8] = msf.cdmsf_frame1; 3067 cgc->data_direction = CGC_DATA_NONE; 3068 return cdo->generic_packet(cdi, cgc); 3069 } 3070 3071 static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, 3072 void __user *arg, 3073 struct packet_command *cgc) 3074 { 3075 const struct cdrom_device_ops *cdo = cdi->ops; 3076 struct cdrom_blk blk; 3077 cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); 3078 if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk))) 3079 return -EFAULT; 3080 cgc->cmd[0] = GPCMD_PLAY_AUDIO_10; 3081 cgc->cmd[2] = (blk.from >> 24) & 0xff; 3082 cgc->cmd[3] = (blk.from >> 16) & 0xff; 3083 cgc->cmd[4] = (blk.from >> 8) & 0xff; 3084 cgc->cmd[5] = blk.from & 0xff; 3085 cgc->cmd[7] = (blk.len >> 8) & 0xff; 3086 cgc->cmd[8] = blk.len & 0xff; 3087 cgc->data_direction = CGC_DATA_NONE; 3088 return cdo->generic_packet(cdi, cgc); 3089 } 3090 3091 static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, 3092 void __user *arg, 3093 struct packet_command *cgc, 3094 unsigned int cmd) 3095 { 3096 struct cdrom_volctrl volctrl; 3097 unsigned char buffer[32]; 3098 char mask[sizeof(buffer)]; 3099 unsigned short offset; 3100 int ret; 3101 3102 cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n"); 3103 3104 if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg, 3105 sizeof(volctrl))) 3106 return -EFAULT; 3107 3108 cgc->buffer = buffer; 3109 cgc->buflen = 24; 3110 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0); 3111 if (ret) 3112 return ret; 3113 3114 /* originally the code depended on buffer[1] to determine 3115 how much data is available for transfer. buffer[1] is 3116 unfortunately ambigious and the only reliable way seem 3117 to be to simply skip over the block descriptor... */ 3118 offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6)); 3119 3120 if (offset + 16 > sizeof(buffer)) 3121 return -E2BIG; 3122 3123 if (offset + 16 > cgc->buflen) { 3124 cgc->buflen = offset + 16; 3125 ret = cdrom_mode_sense(cdi, cgc, 3126 GPMODE_AUDIO_CTL_PAGE, 0); 3127 if (ret) 3128 return ret; 3129 } 3130 3131 /* sanity check */ 3132 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || 3133 buffer[offset + 1] < 14) 3134 return -EINVAL; 3135 3136 /* now we have the current volume settings. if it was only 3137 a CDROMVOLREAD, return these values */ 3138 if (cmd == CDROMVOLREAD) { 3139 volctrl.channel0 = buffer[offset+9]; 3140 volctrl.channel1 = buffer[offset+11]; 3141 volctrl.channel2 = buffer[offset+13]; 3142 volctrl.channel3 = buffer[offset+15]; 3143 if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl, 3144 sizeof(volctrl))) 3145 return -EFAULT; 3146 return 0; 3147 } 3148 3149 /* get the volume mask */ 3150 cgc->buffer = mask; 3151 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1); 3152 if (ret) 3153 return ret; 3154 3155 buffer[offset + 9] = volctrl.channel0 & mask[offset + 9]; 3156 buffer[offset + 11] = volctrl.channel1 & mask[offset + 11]; 3157 buffer[offset + 13] = volctrl.channel2 & mask[offset + 13]; 3158 buffer[offset + 15] = volctrl.channel3 & mask[offset + 15]; 3159 3160 /* set volume */ 3161 cgc->buffer = buffer + offset - 8; 3162 memset(cgc->buffer, 0, 8); 3163 return cdrom_mode_select(cdi, cgc); 3164 } 3165 3166 static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, 3167 struct packet_command *cgc, 3168 int cmd) 3169 { 3170 const struct cdrom_device_ops *cdo = cdi->ops; 3171 cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); 3172 cgc->cmd[0] = GPCMD_START_STOP_UNIT; 3173 cgc->cmd[1] = 1; 3174 cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0; 3175 cgc->data_direction = CGC_DATA_NONE; 3176 return cdo->generic_packet(cdi, cgc); 3177 } 3178 3179 static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, 3180 struct packet_command *cgc, 3181 int cmd) 3182 { 3183 const struct cdrom_device_ops *cdo = cdi->ops; 3184 cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); 3185 cgc->cmd[0] = GPCMD_PAUSE_RESUME; 3186 cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; 3187 cgc->data_direction = CGC_DATA_NONE; 3188 return cdo->generic_packet(cdi, cgc); 3189 } 3190 3191 static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, 3192 void __user *arg, 3193 struct packet_command *cgc) 3194 { 3195 int ret; 3196 dvd_struct *s; 3197 int size = sizeof(dvd_struct); 3198 3199 if (!CDROM_CAN(CDC_DVD)) 3200 return -ENOSYS; 3201 3202 s = memdup_user(arg, size); 3203 if (IS_ERR(s)) 3204 return PTR_ERR(s); 3205 3206 cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); 3207 3208 ret = dvd_read_struct(cdi, s, cgc); 3209 if (ret) 3210 goto out; 3211 3212 if (copy_to_user(arg, s, size)) 3213 ret = -EFAULT; 3214 out: 3215 kfree(s); 3216 return ret; 3217 } 3218 3219 static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi, 3220 void __user *arg) 3221 { 3222 int ret; 3223 dvd_authinfo ai; 3224 if (!CDROM_CAN(CDC_DVD)) 3225 return -ENOSYS; 3226 cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n"); 3227 if (copy_from_user(&ai, (dvd_authinfo __user *)arg, sizeof(ai))) 3228 return -EFAULT; 3229 ret = dvd_do_auth(cdi, &ai); 3230 if (ret) 3231 return ret; 3232 if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai))) 3233 return -EFAULT; 3234 return 0; 3235 } 3236 3237 static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi, 3238 void __user *arg) 3239 { 3240 int ret; 3241 long next = 0; 3242 cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); 3243 ret = cdrom_get_next_writable(cdi, &next); 3244 if (ret) 3245 return ret; 3246 if (copy_to_user((long __user *)arg, &next, sizeof(next))) 3247 return -EFAULT; 3248 return 0; 3249 } 3250 3251 static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi, 3252 void __user *arg) 3253 { 3254 int ret; 3255 long last = 0; 3256 cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); 3257 ret = cdrom_get_last_written(cdi, &last); 3258 if (ret) 3259 return ret; 3260 if (copy_to_user((long __user *)arg, &last, sizeof(last))) 3261 return -EFAULT; 3262 return 0; 3263 } 3264 3265 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, 3266 unsigned long arg) 3267 { 3268 struct packet_command cgc; 3269 void __user *userptr = (void __user *)arg; 3270 3271 memset(&cgc, 0, sizeof(cgc)); 3272 3273 /* build a unified command and queue it through 3274 cdo->generic_packet() */ 3275 switch (cmd) { 3276 case CDROMREADRAW: 3277 case CDROMREADMODE1: 3278 case CDROMREADMODE2: 3279 return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd); 3280 case CDROMREADAUDIO: 3281 return mmc_ioctl_cdrom_read_audio(cdi, userptr); 3282 case CDROMSUBCHNL: 3283 return mmc_ioctl_cdrom_subchannel(cdi, userptr); 3284 case CDROMPLAYMSF: 3285 return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc); 3286 case CDROMPLAYBLK: 3287 return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc); 3288 case CDROMVOLCTRL: 3289 case CDROMVOLREAD: 3290 return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd); 3291 case CDROMSTART: 3292 case CDROMSTOP: 3293 return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd); 3294 case CDROMPAUSE: 3295 case CDROMRESUME: 3296 return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd); 3297 case DVD_READ_STRUCT: 3298 return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc); 3299 case DVD_AUTH: 3300 return mmc_ioctl_dvd_auth(cdi, userptr); 3301 case CDROM_NEXT_WRITABLE: 3302 return mmc_ioctl_cdrom_next_writable(cdi, userptr); 3303 case CDROM_LAST_WRITTEN: 3304 return mmc_ioctl_cdrom_last_written(cdi, userptr); 3305 } 3306 3307 return -ENOTTY; 3308 } 3309 3310 /* 3311 * Just about every imaginable ioctl is supported in the Uniform layer 3312 * these days. 3313 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). 3314 */ 3315 int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, 3316 fmode_t mode, unsigned int cmd, unsigned long arg) 3317 { 3318 void __user *argp = (void __user *)arg; 3319 int ret; 3320 3321 /* 3322 * Try the generic SCSI command ioctl's first. 3323 */ 3324 ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp); 3325 if (ret != -ENOTTY) 3326 return ret; 3327 3328 switch (cmd) { 3329 case CDROMMULTISESSION: 3330 return cdrom_ioctl_multisession(cdi, argp); 3331 case CDROMEJECT: 3332 return cdrom_ioctl_eject(cdi); 3333 case CDROMCLOSETRAY: 3334 return cdrom_ioctl_closetray(cdi); 3335 case CDROMEJECT_SW: 3336 return cdrom_ioctl_eject_sw(cdi, arg); 3337 case CDROM_MEDIA_CHANGED: 3338 return cdrom_ioctl_media_changed(cdi, arg); 3339 case CDROM_SET_OPTIONS: 3340 return cdrom_ioctl_set_options(cdi, arg); 3341 case CDROM_CLEAR_OPTIONS: 3342 return cdrom_ioctl_clear_options(cdi, arg); 3343 case CDROM_SELECT_SPEED: 3344 return cdrom_ioctl_select_speed(cdi, arg); 3345 case CDROM_SELECT_DISC: 3346 return cdrom_ioctl_select_disc(cdi, arg); 3347 case CDROMRESET: 3348 return cdrom_ioctl_reset(cdi, bdev); 3349 case CDROM_LOCKDOOR: 3350 return cdrom_ioctl_lock_door(cdi, arg); 3351 case CDROM_DEBUG: 3352 return cdrom_ioctl_debug(cdi, arg); 3353 case CDROM_GET_CAPABILITY: 3354 return cdrom_ioctl_get_capability(cdi); 3355 case CDROM_GET_MCN: 3356 return cdrom_ioctl_get_mcn(cdi, argp); 3357 case CDROM_DRIVE_STATUS: 3358 return cdrom_ioctl_drive_status(cdi, arg); 3359 case CDROM_DISC_STATUS: 3360 return cdrom_ioctl_disc_status(cdi); 3361 case CDROM_CHANGER_NSLOTS: 3362 return cdrom_ioctl_changer_nslots(cdi); 3363 } 3364 3365 /* 3366 * Use the ioctls that are implemented through the generic_packet() 3367 * interface. this may look at bit funny, but if -ENOTTY is 3368 * returned that particular ioctl is not implemented and we 3369 * let it go through the device specific ones. 3370 */ 3371 if (CDROM_CAN(CDC_GENERIC_PACKET)) { 3372 ret = mmc_ioctl(cdi, cmd, arg); 3373 if (ret != -ENOTTY) 3374 return ret; 3375 } 3376 3377 /* 3378 * Note: most of the cd_dbg() calls are commented out here, 3379 * because they fill up the sys log when CD players poll 3380 * the drive. 3381 */ 3382 switch (cmd) { 3383 case CDROMSUBCHNL: 3384 return cdrom_ioctl_get_subchnl(cdi, argp); 3385 case CDROMREADTOCHDR: 3386 return cdrom_ioctl_read_tochdr(cdi, argp); 3387 case CDROMREADTOCENTRY: 3388 return cdrom_ioctl_read_tocentry(cdi, argp); 3389 case CDROMPLAYMSF: 3390 return cdrom_ioctl_play_msf(cdi, argp); 3391 case CDROMPLAYTRKIND: 3392 return cdrom_ioctl_play_trkind(cdi, argp); 3393 case CDROMVOLCTRL: 3394 return cdrom_ioctl_volctrl(cdi, argp); 3395 case CDROMVOLREAD: 3396 return cdrom_ioctl_volread(cdi, argp); 3397 case CDROMSTART: 3398 case CDROMSTOP: 3399 case CDROMPAUSE: 3400 case CDROMRESUME: 3401 return cdrom_ioctl_audioctl(cdi, cmd); 3402 } 3403 3404 return -ENOSYS; 3405 } 3406 3407 EXPORT_SYMBOL(cdrom_get_last_written); 3408 EXPORT_SYMBOL(register_cdrom); 3409 EXPORT_SYMBOL(unregister_cdrom); 3410 EXPORT_SYMBOL(cdrom_open); 3411 EXPORT_SYMBOL(cdrom_release); 3412 EXPORT_SYMBOL(cdrom_ioctl); 3413 EXPORT_SYMBOL(cdrom_media_changed); 3414 EXPORT_SYMBOL(cdrom_number_of_slots); 3415 EXPORT_SYMBOL(cdrom_mode_select); 3416 EXPORT_SYMBOL(cdrom_mode_sense); 3417 EXPORT_SYMBOL(init_cdrom_command); 3418 EXPORT_SYMBOL(cdrom_get_media_event); 3419 3420 #ifdef CONFIG_SYSCTL 3421 3422 #define CDROM_STR_SIZE 1000 3423 3424 static struct cdrom_sysctl_settings { 3425 char info[CDROM_STR_SIZE]; /* general info */ 3426 int autoclose; /* close tray upon mount, etc */ 3427 int autoeject; /* eject on umount */ 3428 int debug; /* turn on debugging messages */ 3429 int lock; /* lock the door on device open */ 3430 int check; /* check media type */ 3431 } cdrom_sysctl_settings; 3432 3433 enum cdrom_print_option { 3434 CTL_NAME, 3435 CTL_SPEED, 3436 CTL_SLOTS, 3437 CTL_CAPABILITY 3438 }; 3439 3440 static int cdrom_print_info(const char *header, int val, char *info, 3441 int *pos, enum cdrom_print_option option) 3442 { 3443 const int max_size = sizeof(cdrom_sysctl_settings.info); 3444 struct cdrom_device_info *cdi; 3445 int ret; 3446 3447 ret = scnprintf(info + *pos, max_size - *pos, header); 3448 if (!ret) 3449 return 1; 3450 3451 *pos += ret; 3452 3453 list_for_each_entry(cdi, &cdrom_list, list) { 3454 switch (option) { 3455 case CTL_NAME: 3456 ret = scnprintf(info + *pos, max_size - *pos, 3457 "\t%s", cdi->name); 3458 break; 3459 case CTL_SPEED: 3460 ret = scnprintf(info + *pos, max_size - *pos, 3461 "\t%d", cdi->speed); 3462 break; 3463 case CTL_SLOTS: 3464 ret = scnprintf(info + *pos, max_size - *pos, 3465 "\t%d", cdi->capacity); 3466 break; 3467 case CTL_CAPABILITY: 3468 ret = scnprintf(info + *pos, max_size - *pos, 3469 "\t%d", CDROM_CAN(val) != 0); 3470 break; 3471 default: 3472 pr_info("invalid option%d\n", option); 3473 return 1; 3474 } 3475 if (!ret) 3476 return 1; 3477 *pos += ret; 3478 } 3479 3480 return 0; 3481 } 3482 3483 static int cdrom_sysctl_info(struct ctl_table *ctl, int write, 3484 void __user *buffer, size_t *lenp, loff_t *ppos) 3485 { 3486 int pos; 3487 char *info = cdrom_sysctl_settings.info; 3488 const int max_size = sizeof(cdrom_sysctl_settings.info); 3489 3490 if (!*lenp || (*ppos && !write)) { 3491 *lenp = 0; 3492 return 0; 3493 } 3494 3495 mutex_lock(&cdrom_mutex); 3496 3497 pos = sprintf(info, "CD-ROM information, " VERSION "\n"); 3498 3499 if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) 3500 goto done; 3501 if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) 3502 goto done; 3503 if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) 3504 goto done; 3505 if (cdrom_print_info("\nCan close tray:\t", 3506 CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) 3507 goto done; 3508 if (cdrom_print_info("\nCan open tray:\t", 3509 CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) 3510 goto done; 3511 if (cdrom_print_info("\nCan lock tray:\t", 3512 CDC_LOCK, info, &pos, CTL_CAPABILITY)) 3513 goto done; 3514 if (cdrom_print_info("\nCan change speed:", 3515 CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) 3516 goto done; 3517 if (cdrom_print_info("\nCan select disk:", 3518 CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) 3519 goto done; 3520 if (cdrom_print_info("\nCan read multisession:", 3521 CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) 3522 goto done; 3523 if (cdrom_print_info("\nCan read MCN:\t", 3524 CDC_MCN, info, &pos, CTL_CAPABILITY)) 3525 goto done; 3526 if (cdrom_print_info("\nReports media changed:", 3527 CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) 3528 goto done; 3529 if (cdrom_print_info("\nCan play audio:\t", 3530 CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) 3531 goto done; 3532 if (cdrom_print_info("\nCan write CD-R:\t", 3533 CDC_CD_R, info, &pos, CTL_CAPABILITY)) 3534 goto done; 3535 if (cdrom_print_info("\nCan write CD-RW:", 3536 CDC_CD_RW, info, &pos, CTL_CAPABILITY)) 3537 goto done; 3538 if (cdrom_print_info("\nCan read DVD:\t", 3539 CDC_DVD, info, &pos, CTL_CAPABILITY)) 3540 goto done; 3541 if (cdrom_print_info("\nCan write DVD-R:", 3542 CDC_DVD_R, info, &pos, CTL_CAPABILITY)) 3543 goto done; 3544 if (cdrom_print_info("\nCan write DVD-RAM:", 3545 CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) 3546 goto done; 3547 if (cdrom_print_info("\nCan read MRW:\t", 3548 CDC_MRW, info, &pos, CTL_CAPABILITY)) 3549 goto done; 3550 if (cdrom_print_info("\nCan write MRW:\t", 3551 CDC_MRW_W, info, &pos, CTL_CAPABILITY)) 3552 goto done; 3553 if (cdrom_print_info("\nCan write RAM:\t", 3554 CDC_RAM, info, &pos, CTL_CAPABILITY)) 3555 goto done; 3556 if (!scnprintf(info + pos, max_size - pos, "\n\n")) 3557 goto done; 3558 doit: 3559 mutex_unlock(&cdrom_mutex); 3560 return proc_dostring(ctl, write, buffer, lenp, ppos); 3561 done: 3562 pr_info("info buffer too small\n"); 3563 goto doit; 3564 } 3565 3566 /* Unfortunately, per device settings are not implemented through 3567 procfs/sysctl yet. When they are, this will naturally disappear. For now 3568 just update all drives. Later this will become the template on which 3569 new registered drives will be based. */ 3570 static void cdrom_update_settings(void) 3571 { 3572 struct cdrom_device_info *cdi; 3573 3574 mutex_lock(&cdrom_mutex); 3575 list_for_each_entry(cdi, &cdrom_list, list) { 3576 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) 3577 cdi->options |= CDO_AUTO_CLOSE; 3578 else if (!autoclose) 3579 cdi->options &= ~CDO_AUTO_CLOSE; 3580 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) 3581 cdi->options |= CDO_AUTO_EJECT; 3582 else if (!autoeject) 3583 cdi->options &= ~CDO_AUTO_EJECT; 3584 if (lockdoor && CDROM_CAN(CDC_LOCK)) 3585 cdi->options |= CDO_LOCK; 3586 else if (!lockdoor) 3587 cdi->options &= ~CDO_LOCK; 3588 if (check_media_type) 3589 cdi->options |= CDO_CHECK_TYPE; 3590 else 3591 cdi->options &= ~CDO_CHECK_TYPE; 3592 } 3593 mutex_unlock(&cdrom_mutex); 3594 } 3595 3596 static int cdrom_sysctl_handler(struct ctl_table *ctl, int write, 3597 void __user *buffer, size_t *lenp, loff_t *ppos) 3598 { 3599 int ret; 3600 3601 ret = proc_dointvec(ctl, write, buffer, lenp, ppos); 3602 3603 if (write) { 3604 3605 /* we only care for 1 or 0. */ 3606 autoclose = !!cdrom_sysctl_settings.autoclose; 3607 autoeject = !!cdrom_sysctl_settings.autoeject; 3608 debug = !!cdrom_sysctl_settings.debug; 3609 lockdoor = !!cdrom_sysctl_settings.lock; 3610 check_media_type = !!cdrom_sysctl_settings.check; 3611 3612 /* update the option flags according to the changes. we 3613 don't have per device options through sysctl yet, 3614 but we will have and then this will disappear. */ 3615 cdrom_update_settings(); 3616 } 3617 3618 return ret; 3619 } 3620 3621 /* Place files in /proc/sys/dev/cdrom */ 3622 static struct ctl_table cdrom_table[] = { 3623 { 3624 .procname = "info", 3625 .data = &cdrom_sysctl_settings.info, 3626 .maxlen = CDROM_STR_SIZE, 3627 .mode = 0444, 3628 .proc_handler = cdrom_sysctl_info, 3629 }, 3630 { 3631 .procname = "autoclose", 3632 .data = &cdrom_sysctl_settings.autoclose, 3633 .maxlen = sizeof(int), 3634 .mode = 0644, 3635 .proc_handler = cdrom_sysctl_handler, 3636 }, 3637 { 3638 .procname = "autoeject", 3639 .data = &cdrom_sysctl_settings.autoeject, 3640 .maxlen = sizeof(int), 3641 .mode = 0644, 3642 .proc_handler = cdrom_sysctl_handler, 3643 }, 3644 { 3645 .procname = "debug", 3646 .data = &cdrom_sysctl_settings.debug, 3647 .maxlen = sizeof(int), 3648 .mode = 0644, 3649 .proc_handler = cdrom_sysctl_handler, 3650 }, 3651 { 3652 .procname = "lock", 3653 .data = &cdrom_sysctl_settings.lock, 3654 .maxlen = sizeof(int), 3655 .mode = 0644, 3656 .proc_handler = cdrom_sysctl_handler, 3657 }, 3658 { 3659 .procname = "check_media", 3660 .data = &cdrom_sysctl_settings.check, 3661 .maxlen = sizeof(int), 3662 .mode = 0644, 3663 .proc_handler = cdrom_sysctl_handler 3664 }, 3665 { } 3666 }; 3667 3668 static struct ctl_table cdrom_cdrom_table[] = { 3669 { 3670 .procname = "cdrom", 3671 .maxlen = 0, 3672 .mode = 0555, 3673 .child = cdrom_table, 3674 }, 3675 { } 3676 }; 3677 3678 /* Make sure that /proc/sys/dev is there */ 3679 static struct ctl_table cdrom_root_table[] = { 3680 { 3681 .procname = "dev", 3682 .maxlen = 0, 3683 .mode = 0555, 3684 .child = cdrom_cdrom_table, 3685 }, 3686 { } 3687 }; 3688 static struct ctl_table_header *cdrom_sysctl_header; 3689 3690 static void cdrom_sysctl_register(void) 3691 { 3692 static int initialized; 3693 3694 if (initialized == 1) 3695 return; 3696 3697 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); 3698 3699 /* set the defaults */ 3700 cdrom_sysctl_settings.autoclose = autoclose; 3701 cdrom_sysctl_settings.autoeject = autoeject; 3702 cdrom_sysctl_settings.debug = debug; 3703 cdrom_sysctl_settings.lock = lockdoor; 3704 cdrom_sysctl_settings.check = check_media_type; 3705 3706 initialized = 1; 3707 } 3708 3709 static void cdrom_sysctl_unregister(void) 3710 { 3711 if (cdrom_sysctl_header) 3712 unregister_sysctl_table(cdrom_sysctl_header); 3713 } 3714 3715 #else /* CONFIG_SYSCTL */ 3716 3717 static void cdrom_sysctl_register(void) 3718 { 3719 } 3720 3721 static void cdrom_sysctl_unregister(void) 3722 { 3723 } 3724 3725 #endif /* CONFIG_SYSCTL */ 3726 3727 static int __init cdrom_init(void) 3728 { 3729 cdrom_sysctl_register(); 3730 3731 return 0; 3732 } 3733 3734 static void __exit cdrom_exit(void) 3735 { 3736 pr_info("Uniform CD-ROM driver unloaded\n"); 3737 cdrom_sysctl_unregister(); 3738 } 3739 3740 module_init(cdrom_init); 3741 module_exit(cdrom_exit); 3742 MODULE_LICENSE("GPL"); 3743