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