Commit | Line | Data |
---|---|---|
f30c2269 | 1 | /* linux/drivers/cdrom/cdrom.c |
1da177e4 LT |
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 activly | |
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 REVISION "Revision: 3.20" | |
246 | #define VERSION "Id: cdrom.c 3.20 2003/12/17" | |
247 | ||
248 | /* I use an error-log mask to give fine grain control over the type of | |
249 | messages dumped to the system logs. The available masks include: */ | |
250 | #define CD_NOTHING 0x0 | |
251 | #define CD_WARNING 0x1 | |
252 | #define CD_REG_UNREG 0x2 | |
253 | #define CD_DO_IOCTL 0x4 | |
254 | #define CD_OPEN 0x8 | |
255 | #define CD_CLOSE 0x10 | |
256 | #define CD_COUNT_TRACKS 0x20 | |
257 | #define CD_CHANGER 0x40 | |
258 | #define CD_DVD 0x80 | |
259 | ||
260 | /* Define this to remove _all_ the debugging messages */ | |
261 | /* #define ERRLOGMASK CD_NOTHING */ | |
262 | #define ERRLOGMASK CD_WARNING | |
263 | /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */ | |
264 | /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */ | |
265 | ||
1da177e4 LT |
266 | #include <linux/module.h> |
267 | #include <linux/fs.h> | |
268 | #include <linux/buffer_head.h> | |
269 | #include <linux/major.h> | |
270 | #include <linux/types.h> | |
271 | #include <linux/errno.h> | |
272 | #include <linux/kernel.h> | |
273 | #include <linux/mm.h> | |
274 | #include <linux/slab.h> | |
275 | #include <linux/cdrom.h> | |
276 | #include <linux/sysctl.h> | |
277 | #include <linux/proc_fs.h> | |
278 | #include <linux/blkpg.h> | |
279 | #include <linux/init.h> | |
280 | #include <linux/fcntl.h> | |
281 | #include <linux/blkdev.h> | |
282 | #include <linux/times.h> | |
283 | ||
284 | #include <asm/uaccess.h> | |
285 | ||
286 | /* used to tell the module to turn on full debugging messages */ | |
287 | static int debug; | |
288 | /* used to keep tray locked at all times */ | |
289 | static int keeplocked; | |
290 | /* default compatibility mode */ | |
291 | static int autoclose=1; | |
292 | static int autoeject; | |
293 | static int lockdoor = 1; | |
294 | /* will we ever get to use this... sigh. */ | |
295 | static int check_media_type; | |
296 | /* automatically restart mrw format */ | |
297 | static int mrw_format_restart = 1; | |
298 | module_param(debug, bool, 0); | |
299 | module_param(autoclose, bool, 0); | |
300 | module_param(autoeject, bool, 0); | |
301 | module_param(lockdoor, bool, 0); | |
302 | module_param(check_media_type, bool, 0); | |
303 | module_param(mrw_format_restart, bool, 0); | |
304 | ||
554988d6 | 305 | static DEFINE_MUTEX(cdrom_mutex); |
1da177e4 LT |
306 | |
307 | static const char *mrw_format_status[] = { | |
308 | "not mrw", | |
309 | "bgformat inactive", | |
310 | "bgformat active", | |
311 | "mrw complete", | |
312 | }; | |
313 | ||
314 | static const char *mrw_address_space[] = { "DMA", "GAA" }; | |
315 | ||
316 | #if (ERRLOGMASK!=CD_NOTHING) | |
317 | #define cdinfo(type, fmt, args...) \ | |
318 | if ((ERRLOGMASK & type) || debug==1 ) \ | |
319 | printk(KERN_INFO "cdrom: " fmt, ## args) | |
320 | #else | |
321 | #define cdinfo(type, fmt, args...) | |
322 | #endif | |
323 | ||
324 | /* These are used to simplify getting data in from and back to user land */ | |
325 | #define IOCTL_IN(arg, type, in) \ | |
326 | if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \ | |
327 | return -EFAULT; | |
328 | ||
329 | #define IOCTL_OUT(arg, type, out) \ | |
330 | if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \ | |
331 | return -EFAULT; | |
332 | ||
333 | /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in | |
334 | a lot of places. This macro makes the code more clear. */ | |
335 | #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) | |
336 | ||
337 | /* used in the audio ioctls */ | |
338 | #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret | |
339 | ||
2e11c207 JA |
340 | /* |
341 | * Another popular OS uses 7 seconds as the hard timeout for default | |
342 | * commands, so it is a good choice for us as well. | |
343 | */ | |
344 | #define CDROM_DEF_TIMEOUT (7 * HZ) | |
345 | ||
1da177e4 LT |
346 | /* Not-exported routines. */ |
347 | static int open_for_data(struct cdrom_device_info * cdi); | |
348 | static int check_for_audio_disc(struct cdrom_device_info * cdi, | |
349 | struct cdrom_device_ops * cdo); | |
350 | static void sanitize_format(union cdrom_addr *addr, | |
351 | u_char * curr, u_char requested); | |
352 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
353 | unsigned long arg); | |
354 | ||
355 | int cdrom_get_last_written(struct cdrom_device_info *, long *); | |
356 | static int cdrom_get_next_writable(struct cdrom_device_info *, long *); | |
357 | static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*); | |
358 | ||
359 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi); | |
360 | ||
361 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di); | |
362 | ||
1da177e4 | 363 | static void cdrom_sysctl_register(void); |
17672cf0 | 364 | |
7fd097d4 | 365 | static LIST_HEAD(cdrom_list); |
1da177e4 LT |
366 | |
367 | static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, | |
368 | struct packet_command *cgc) | |
369 | { | |
370 | if (cgc->sense) { | |
371 | cgc->sense->sense_key = 0x05; | |
372 | cgc->sense->asc = 0x20; | |
373 | cgc->sense->ascq = 0x00; | |
374 | } | |
375 | ||
376 | cgc->stat = -EIO; | |
377 | return -EIO; | |
378 | } | |
379 | ||
380 | /* This macro makes sure we don't have to check on cdrom_device_ops | |
381 | * existence in the run-time routines below. Change_capability is a | |
382 | * hack to have the capability flags defined const, while we can still | |
383 | * change it here without gcc complaining at every line. | |
384 | */ | |
385 | #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits) | |
386 | ||
387 | int register_cdrom(struct cdrom_device_info *cdi) | |
388 | { | |
389 | static char banner_printed; | |
390 | struct cdrom_device_ops *cdo = cdi->ops; | |
391 | int *change_capability = (int *)&cdo->capability; /* hack */ | |
392 | ||
393 | cdinfo(CD_OPEN, "entering register_cdrom\n"); | |
394 | ||
395 | if (cdo->open == NULL || cdo->release == NULL) | |
3c3f4e01 | 396 | return -EINVAL; |
1da177e4 LT |
397 | if (!banner_printed) { |
398 | printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n"); | |
399 | banner_printed = 1; | |
1da177e4 | 400 | cdrom_sysctl_register(); |
1da177e4 LT |
401 | } |
402 | ||
403 | ENSURE(drive_status, CDC_DRIVE_STATUS ); | |
404 | ENSURE(media_changed, CDC_MEDIA_CHANGED); | |
405 | ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); | |
406 | ENSURE(lock_door, CDC_LOCK); | |
407 | ENSURE(select_speed, CDC_SELECT_SPEED); | |
408 | ENSURE(get_last_session, CDC_MULTI_SESSION); | |
409 | ENSURE(get_mcn, CDC_MCN); | |
410 | ENSURE(reset, CDC_RESET); | |
411 | ENSURE(audio_ioctl, CDC_PLAY_AUDIO); | |
1da177e4 LT |
412 | ENSURE(generic_packet, CDC_GENERIC_PACKET); |
413 | cdi->mc_flags = 0; | |
414 | cdo->n_minors = 0; | |
415 | cdi->options = CDO_USE_FFLAGS; | |
416 | ||
417 | if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY)) | |
418 | cdi->options |= (int) CDO_AUTO_CLOSE; | |
419 | if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY)) | |
420 | cdi->options |= (int) CDO_AUTO_EJECT; | |
421 | if (lockdoor==1) | |
422 | cdi->options |= (int) CDO_LOCK; | |
423 | if (check_media_type==1) | |
424 | cdi->options |= (int) CDO_CHECK_TYPE; | |
425 | ||
426 | if (CDROM_CAN(CDC_MRW_W)) | |
427 | cdi->exit = cdrom_mrw_exit; | |
428 | ||
429 | if (cdi->disk) | |
430 | cdi->cdda_method = CDDA_BPC_FULL; | |
431 | else | |
432 | cdi->cdda_method = CDDA_OLD; | |
433 | ||
434 | if (!cdo->generic_packet) | |
435 | cdo->generic_packet = cdrom_dummy_generic_packet; | |
436 | ||
437 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); | |
554988d6 | 438 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 439 | list_add(&cdi->list, &cdrom_list); |
554988d6 | 440 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
441 | return 0; |
442 | } | |
443 | #undef ENSURE | |
444 | ||
0a0c4114 | 445 | void unregister_cdrom(struct cdrom_device_info *cdi) |
1da177e4 | 446 | { |
1da177e4 LT |
447 | cdinfo(CD_OPEN, "entering unregister_cdrom\n"); |
448 | ||
554988d6 | 449 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 450 | list_del(&cdi->list); |
554988d6 | 451 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
452 | |
453 | if (cdi->exit) | |
454 | cdi->exit(cdi); | |
455 | ||
456 | cdi->ops->n_minors--; | |
457 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); | |
1da177e4 LT |
458 | } |
459 | ||
460 | int cdrom_get_media_event(struct cdrom_device_info *cdi, | |
461 | struct media_event_desc *med) | |
462 | { | |
463 | struct packet_command cgc; | |
fce53847 FT |
464 | unsigned char buffer[8]; |
465 | struct event_header *eh = (struct event_header *) buffer; | |
1da177e4 | 466 | |
fce53847 | 467 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
468 | cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; |
469 | cgc.cmd[1] = 1; /* IMMED */ | |
470 | cgc.cmd[4] = 1 << 4; /* media event */ | |
fce53847 | 471 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
472 | cgc.quiet = 1; |
473 | ||
474 | if (cdi->ops->generic_packet(cdi, &cgc)) | |
fce53847 | 475 | return 1; |
1da177e4 LT |
476 | |
477 | if (be16_to_cpu(eh->data_len) < sizeof(*med)) | |
fce53847 | 478 | return 1; |
1da177e4 LT |
479 | |
480 | if (eh->nea || eh->notification_class != 0x4) | |
fce53847 | 481 | return 1; |
1da177e4 | 482 | |
fce53847 FT |
483 | memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); |
484 | return 0; | |
1da177e4 LT |
485 | } |
486 | ||
487 | /* | |
488 | * the first prototypes used 0x2c as the page code for the mrw mode page, | |
489 | * subsequently this was changed to 0x03. probe the one used by this drive | |
490 | */ | |
491 | static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) | |
492 | { | |
493 | struct packet_command cgc; | |
fce53847 | 494 | char buffer[16]; |
1da177e4 | 495 | |
fce53847 | 496 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
497 | |
498 | cgc.timeout = HZ; | |
499 | cgc.quiet = 1; | |
500 | ||
501 | if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { | |
502 | cdi->mrw_mode_page = MRW_MODE_PC; | |
fce53847 | 503 | return 0; |
1da177e4 LT |
504 | } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { |
505 | cdi->mrw_mode_page = MRW_MODE_PC_PRE1; | |
fce53847 | 506 | return 0; |
1da177e4 | 507 | } |
fce53847 FT |
508 | |
509 | return 1; | |
1da177e4 LT |
510 | } |
511 | ||
512 | static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) | |
513 | { | |
514 | struct packet_command cgc; | |
515 | struct mrw_feature_desc *mfd; | |
fce53847 | 516 | unsigned char buffer[16]; |
1da177e4 LT |
517 | int ret; |
518 | ||
519 | *write = 0; | |
520 | ||
fce53847 | 521 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
522 | |
523 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
524 | cgc.cmd[3] = CDF_MRW; | |
fce53847 | 525 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
526 | cgc.quiet = 1; |
527 | ||
528 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 529 | return ret; |
1da177e4 LT |
530 | |
531 | mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; | |
fce53847 FT |
532 | if (be16_to_cpu(mfd->feature_code) != CDF_MRW) |
533 | return 1; | |
1da177e4 LT |
534 | *write = mfd->write; |
535 | ||
536 | if ((ret = cdrom_mrw_probe_pc(cdi))) { | |
537 | *write = 0; | |
fce53847 | 538 | return ret; |
1da177e4 | 539 | } |
fce53847 FT |
540 | |
541 | return 0; | |
1da177e4 LT |
542 | } |
543 | ||
544 | static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) | |
545 | { | |
546 | struct packet_command cgc; | |
fce53847 | 547 | unsigned char buffer[12]; |
1da177e4 LT |
548 | int ret; |
549 | ||
550 | printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : ""); | |
551 | ||
552 | /* | |
553 | * FmtData bit set (bit 4), format type is 1 | |
554 | */ | |
fce53847 | 555 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); |
1da177e4 LT |
556 | cgc.cmd[0] = GPCMD_FORMAT_UNIT; |
557 | cgc.cmd[1] = (1 << 4) | 1; | |
558 | ||
559 | cgc.timeout = 5 * 60 * HZ; | |
560 | ||
561 | /* | |
562 | * 4 byte format list header, 8 byte format list descriptor | |
563 | */ | |
564 | buffer[1] = 1 << 1; | |
565 | buffer[3] = 8; | |
566 | ||
567 | /* | |
568 | * nr_blocks field | |
569 | */ | |
570 | buffer[4] = 0xff; | |
571 | buffer[5] = 0xff; | |
572 | buffer[6] = 0xff; | |
573 | buffer[7] = 0xff; | |
574 | ||
575 | buffer[8] = 0x24 << 2; | |
576 | buffer[11] = cont; | |
577 | ||
578 | ret = cdi->ops->generic_packet(cdi, &cgc); | |
579 | if (ret) | |
580 | printk(KERN_INFO "cdrom: bgformat failed\n"); | |
581 | ||
582 | return ret; | |
583 | } | |
584 | ||
585 | static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) | |
586 | { | |
587 | struct packet_command cgc; | |
588 | ||
589 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
590 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
591 | ||
592 | /* | |
593 | * Session = 1, Track = 0 | |
594 | */ | |
595 | cgc.cmd[1] = !!immed; | |
596 | cgc.cmd[2] = 1 << 1; | |
597 | ||
598 | cgc.timeout = 5 * 60 * HZ; | |
599 | ||
600 | return cdi->ops->generic_packet(cdi, &cgc); | |
601 | } | |
602 | ||
603 | static int cdrom_flush_cache(struct cdrom_device_info *cdi) | |
604 | { | |
605 | struct packet_command cgc; | |
606 | ||
607 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
608 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
609 | ||
610 | cgc.timeout = 5 * 60 * HZ; | |
611 | ||
612 | return cdi->ops->generic_packet(cdi, &cgc); | |
613 | } | |
614 | ||
615 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi) | |
616 | { | |
617 | disc_information di; | |
618 | int ret; | |
619 | ||
620 | ret = cdrom_get_disc_info(cdi, &di); | |
621 | if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) | |
622 | return 1; | |
623 | ||
624 | ret = 0; | |
625 | if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { | |
626 | printk(KERN_INFO "cdrom: issuing MRW back ground " | |
627 | "format suspend\n"); | |
628 | ret = cdrom_mrw_bgformat_susp(cdi, 0); | |
629 | } | |
630 | ||
7da21a02 | 631 | if (!ret && cdi->media_written) |
1da177e4 LT |
632 | ret = cdrom_flush_cache(cdi); |
633 | ||
634 | return ret; | |
635 | } | |
636 | ||
637 | static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) | |
638 | { | |
639 | struct packet_command cgc; | |
640 | struct mode_page_header *mph; | |
fce53847 | 641 | char buffer[16]; |
1da177e4 LT |
642 | int ret, offset, size; |
643 | ||
fce53847 | 644 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 | 645 | |
fce53847 FT |
646 | cgc.buffer = buffer; |
647 | cgc.buflen = sizeof(buffer); | |
1da177e4 LT |
648 | |
649 | if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0))) | |
fce53847 | 650 | return ret; |
1da177e4 LT |
651 | |
652 | mph = (struct mode_page_header *) buffer; | |
653 | offset = be16_to_cpu(mph->desc_length); | |
654 | size = be16_to_cpu(mph->mode_data_length) + 2; | |
655 | ||
656 | buffer[offset + 3] = space; | |
657 | cgc.buflen = size; | |
658 | ||
659 | if ((ret = cdrom_mode_select(cdi, &cgc))) | |
fce53847 | 660 | return ret; |
1da177e4 LT |
661 | |
662 | printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]); | |
fce53847 | 663 | return 0; |
1da177e4 LT |
664 | } |
665 | ||
666 | static int cdrom_get_random_writable(struct cdrom_device_info *cdi, | |
667 | struct rwrt_feature_desc *rfd) | |
668 | { | |
669 | struct packet_command cgc; | |
fce53847 | 670 | char buffer[24]; |
1da177e4 LT |
671 | int ret; |
672 | ||
fce53847 | 673 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
674 | |
675 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ | |
676 | cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ | |
fce53847 | 677 | cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ |
1da177e4 LT |
678 | cgc.quiet = 1; |
679 | ||
680 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 681 | return ret; |
1da177e4 LT |
682 | |
683 | memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); | |
fce53847 | 684 | return 0; |
1da177e4 LT |
685 | } |
686 | ||
687 | static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) | |
688 | { | |
689 | struct packet_command cgc; | |
fce53847 | 690 | char buffer[16]; |
56052d52 | 691 | __be16 *feature_code; |
1da177e4 LT |
692 | int ret; |
693 | ||
fce53847 | 694 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
695 | |
696 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
697 | cgc.cmd[3] = CDF_HWDM; | |
fce53847 | 698 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
699 | cgc.quiet = 1; |
700 | ||
701 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 702 | return ret; |
1da177e4 | 703 | |
56052d52 | 704 | feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; |
1da177e4 | 705 | if (be16_to_cpu(*feature_code) == CDF_HWDM) |
fce53847 FT |
706 | return 0; |
707 | ||
708 | return 1; | |
1da177e4 LT |
709 | } |
710 | ||
711 | ||
712 | static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) | |
713 | { | |
714 | struct rwrt_feature_desc rfd; | |
715 | int ret; | |
716 | ||
717 | *write = 0; | |
718 | ||
719 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
720 | return ret; | |
721 | ||
722 | if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
723 | *write = 1; | |
724 | ||
725 | return 0; | |
726 | } | |
727 | ||
728 | static int cdrom_media_erasable(struct cdrom_device_info *cdi) | |
729 | { | |
730 | disc_information di; | |
731 | int ret; | |
732 | ||
733 | ret = cdrom_get_disc_info(cdi, &di); | |
734 | if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) | |
735 | return -1; | |
736 | ||
737 | return di.erasable; | |
738 | } | |
739 | ||
740 | /* | |
741 | * FIXME: check RO bit | |
742 | */ | |
743 | static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) | |
744 | { | |
745 | int ret = cdrom_media_erasable(cdi); | |
746 | ||
747 | /* | |
748 | * allow writable open if media info read worked and media is | |
749 | * erasable, _or_ if it fails since not all drives support it | |
750 | */ | |
751 | if (!ret) | |
752 | return 1; | |
753 | ||
754 | return 0; | |
755 | } | |
756 | ||
757 | static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) | |
758 | { | |
759 | disc_information di; | |
760 | int ret; | |
761 | ||
762 | /* | |
763 | * always reset to DMA lba space on open | |
764 | */ | |
765 | if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { | |
766 | printk(KERN_ERR "cdrom: failed setting lba address space\n"); | |
767 | return 1; | |
768 | } | |
769 | ||
770 | ret = cdrom_get_disc_info(cdi, &di); | |
771 | if (ret < 0 || ret < offsetof(typeof(di),disc_type)) | |
772 | return 1; | |
773 | ||
774 | if (!di.erasable) | |
775 | return 1; | |
776 | ||
777 | /* | |
778 | * mrw_status | |
779 | * 0 - not MRW formatted | |
780 | * 1 - MRW bgformat started, but not running or complete | |
781 | * 2 - MRW bgformat in progress | |
782 | * 3 - MRW formatting complete | |
783 | */ | |
784 | ret = 0; | |
785 | printk(KERN_INFO "cdrom open: mrw_status '%s'\n", | |
786 | mrw_format_status[di.mrw_status]); | |
787 | if (!di.mrw_status) | |
788 | ret = 1; | |
789 | else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && | |
790 | mrw_format_restart) | |
791 | ret = cdrom_mrw_bgformat(cdi, 1); | |
792 | ||
793 | return ret; | |
794 | } | |
795 | ||
796 | static int mo_open_write(struct cdrom_device_info *cdi) | |
797 | { | |
798 | struct packet_command cgc; | |
fce53847 | 799 | char buffer[255]; |
1da177e4 LT |
800 | int ret; |
801 | ||
fce53847 | 802 | init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); |
1da177e4 LT |
803 | cgc.quiet = 1; |
804 | ||
805 | /* | |
806 | * obtain write protect information as per | |
807 | * drivers/scsi/sd.c:sd_read_write_protect_flag | |
808 | */ | |
809 | ||
810 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
811 | if (ret) | |
812 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); | |
813 | if (ret) { | |
814 | cgc.buflen = 255; | |
815 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
816 | } | |
817 | ||
818 | /* drive gave us no info, let the user go ahead */ | |
fce53847 FT |
819 | if (ret) |
820 | return 0; | |
1da177e4 | 821 | |
fce53847 | 822 | return buffer[3] & 0x80; |
1da177e4 LT |
823 | } |
824 | ||
825 | static int cdrom_ram_open_write(struct cdrom_device_info *cdi) | |
826 | { | |
827 | struct rwrt_feature_desc rfd; | |
828 | int ret; | |
829 | ||
830 | if ((ret = cdrom_has_defect_mgt(cdi))) | |
831 | return ret; | |
832 | ||
833 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
834 | return ret; | |
835 | else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
836 | ret = !rfd.curr; | |
837 | ||
838 | cdinfo(CD_OPEN, "can open for random write\n"); | |
839 | return ret; | |
840 | } | |
841 | ||
842 | static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) | |
843 | { | |
844 | struct packet_command cgc; | |
fce53847 | 845 | char buffer[32]; |
1da177e4 LT |
846 | int ret, mmc3_profile; |
847 | ||
fce53847 | 848 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
849 | |
850 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
851 | cgc.cmd[1] = 0; | |
852 | cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ | |
fce53847 | 853 | cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ |
1da177e4 LT |
854 | cgc.quiet = 1; |
855 | ||
856 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
857 | mmc3_profile = 0xffff; | |
858 | else | |
859 | mmc3_profile = (buffer[6] << 8) | buffer[7]; | |
860 | ||
861 | cdi->mmc3_profile = mmc3_profile; | |
862 | } | |
863 | ||
864 | static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) | |
865 | { | |
866 | switch (cdi->mmc3_profile) { | |
867 | case 0x12: /* DVD-RAM */ | |
868 | case 0x1A: /* DVD+RW */ | |
869 | return 0; | |
870 | default: | |
871 | return 1; | |
872 | } | |
873 | } | |
874 | ||
875 | /* | |
876 | * returns 0 for ok to open write, non-0 to disallow | |
877 | */ | |
878 | static int cdrom_open_write(struct cdrom_device_info *cdi) | |
879 | { | |
880 | int mrw, mrw_write, ram_write; | |
881 | int ret = 1; | |
882 | ||
883 | mrw = 0; | |
884 | if (!cdrom_is_mrw(cdi, &mrw_write)) | |
885 | mrw = 1; | |
886 | ||
887 | if (CDROM_CAN(CDC_MO_DRIVE)) | |
888 | ram_write = 1; | |
889 | else | |
890 | (void) cdrom_is_random_writable(cdi, &ram_write); | |
891 | ||
892 | if (mrw) | |
893 | cdi->mask &= ~CDC_MRW; | |
894 | else | |
895 | cdi->mask |= CDC_MRW; | |
896 | ||
897 | if (mrw_write) | |
898 | cdi->mask &= ~CDC_MRW_W; | |
899 | else | |
900 | cdi->mask |= CDC_MRW_W; | |
901 | ||
902 | if (ram_write) | |
903 | cdi->mask &= ~CDC_RAM; | |
904 | else | |
905 | cdi->mask |= CDC_RAM; | |
906 | ||
907 | if (CDROM_CAN(CDC_MRW_W)) | |
908 | ret = cdrom_mrw_open_write(cdi); | |
909 | else if (CDROM_CAN(CDC_DVD_RAM)) | |
910 | ret = cdrom_dvdram_open_write(cdi); | |
911 | else if (CDROM_CAN(CDC_RAM) && | |
912 | !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE)) | |
913 | ret = cdrom_ram_open_write(cdi); | |
914 | else if (CDROM_CAN(CDC_MO_DRIVE)) | |
915 | ret = mo_open_write(cdi); | |
916 | else if (!cdrom_is_dvd_rw(cdi)) | |
917 | ret = 0; | |
918 | ||
919 | return ret; | |
920 | } | |
921 | ||
922 | static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) | |
923 | { | |
924 | struct packet_command cgc; | |
925 | ||
926 | if (cdi->mmc3_profile != 0x1a) { | |
927 | cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); | |
928 | return; | |
929 | } | |
930 | ||
931 | if (!cdi->media_written) { | |
932 | cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); | |
933 | return; | |
934 | } | |
935 | ||
936 | printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n", | |
937 | cdi->name); | |
938 | ||
939 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
940 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
941 | cgc.timeout = 30*HZ; | |
942 | cdi->ops->generic_packet(cdi, &cgc); | |
943 | ||
944 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
945 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
946 | cgc.timeout = 3000*HZ; | |
947 | cgc.quiet = 1; | |
948 | cdi->ops->generic_packet(cdi, &cgc); | |
949 | ||
950 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
951 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
952 | cgc.cmd[2] = 2; /* Close session */ | |
953 | cgc.quiet = 1; | |
954 | cgc.timeout = 3000*HZ; | |
955 | cdi->ops->generic_packet(cdi, &cgc); | |
956 | ||
957 | cdi->media_written = 0; | |
958 | } | |
959 | ||
960 | static int cdrom_close_write(struct cdrom_device_info *cdi) | |
961 | { | |
962 | #if 0 | |
963 | return cdrom_flush_cache(cdi); | |
964 | #else | |
965 | return 0; | |
966 | #endif | |
967 | } | |
968 | ||
969 | /* We use the open-option O_NONBLOCK to indicate that the | |
970 | * purpose of opening is only for subsequent ioctl() calls; no device | |
971 | * integrity checks are performed. | |
972 | * | |
973 | * We hope that all cd-player programs will adopt this convention. It | |
974 | * is in their own interest: device control becomes a lot easier | |
975 | * this way. | |
976 | */ | |
977 | int cdrom_open(struct cdrom_device_info *cdi, struct inode *ip, struct file *fp) | |
978 | { | |
979 | int ret; | |
980 | ||
981 | cdinfo(CD_OPEN, "entering cdrom_open\n"); | |
982 | ||
983 | /* if this was a O_NONBLOCK open and we should honor the flags, | |
984 | * do a quick open without drive/disc integrity checks. */ | |
985 | cdi->use_count++; | |
986 | if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS)) { | |
987 | ret = cdi->ops->open(cdi, 1); | |
988 | } else { | |
989 | ret = open_for_data(cdi); | |
990 | if (ret) | |
991 | goto err; | |
992 | cdrom_mmc3_profile(cdi); | |
993 | if (fp->f_mode & FMODE_WRITE) { | |
994 | ret = -EROFS; | |
995 | if (cdrom_open_write(cdi)) | |
16070428 | 996 | goto err_release; |
1da177e4 | 997 | if (!CDROM_CAN(CDC_RAM)) |
16070428 | 998 | goto err_release; |
1da177e4 LT |
999 | ret = 0; |
1000 | cdi->media_written = 0; | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | if (ret) | |
1005 | goto err; | |
1006 | ||
1007 | cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", | |
1008 | cdi->name, cdi->use_count); | |
1009 | /* Do this on open. Don't wait for mount, because they might | |
1010 | not be mounting, but opening with O_NONBLOCK */ | |
1011 | check_disk_change(ip->i_bdev); | |
1012 | return 0; | |
16070428 | 1013 | err_release: |
ae3ba4fd AV |
1014 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1015 | cdi->ops->lock_door(cdi, 0); | |
1016 | cdinfo(CD_OPEN, "door unlocked.\n"); | |
1017 | } | |
16070428 | 1018 | cdi->ops->release(cdi); |
1da177e4 LT |
1019 | err: |
1020 | cdi->use_count--; | |
1021 | return ret; | |
1022 | } | |
1023 | ||
1024 | static | |
1025 | int open_for_data(struct cdrom_device_info * cdi) | |
1026 | { | |
1027 | int ret; | |
1028 | struct cdrom_device_ops *cdo = cdi->ops; | |
1029 | tracktype tracks; | |
1030 | cdinfo(CD_OPEN, "entering open_for_data\n"); | |
1031 | /* Check if the driver can report drive status. If it can, we | |
1032 | can do clever things. If it can't, well, we at least tried! */ | |
1033 | if (cdo->drive_status != NULL) { | |
1034 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1035 | cdinfo(CD_OPEN, "drive_status=%d\n", ret); | |
1036 | if (ret == CDS_TRAY_OPEN) { | |
1037 | cdinfo(CD_OPEN, "the tray is open...\n"); | |
1038 | /* can/may i close it? */ | |
1039 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1040 | cdi->options & CDO_AUTO_CLOSE) { | |
1041 | cdinfo(CD_OPEN, "trying to close the tray.\n"); | |
1042 | ret=cdo->tray_move(cdi,0); | |
1043 | if (ret) { | |
1044 | cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n"); | |
1045 | /* Ignore the error from the low | |
1046 | level driver. We don't care why it | |
1047 | couldn't close the tray. We only care | |
1048 | that there is no disc in the drive, | |
1049 | since that is the _REAL_ problem here.*/ | |
1050 | ret=-ENOMEDIUM; | |
1051 | goto clean_up_and_return; | |
1052 | } | |
1053 | } else { | |
1054 | cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n"); | |
1055 | ret=-ENOMEDIUM; | |
1056 | goto clean_up_and_return; | |
1057 | } | |
1058 | /* Ok, the door should be closed now.. Check again */ | |
1059 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1060 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
1061 | cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); | |
1062 | cdinfo(CD_OPEN, "tray might not contain a medium.\n"); | |
1063 | ret=-ENOMEDIUM; | |
1064 | goto clean_up_and_return; | |
1065 | } | |
1066 | cdinfo(CD_OPEN, "the tray is now closed.\n"); | |
1067 | } | |
1068 | /* the door should be closed now, check for the disc */ | |
1069 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1070 | if (ret!=CDS_DISC_OK) { | |
1071 | ret = -ENOMEDIUM; | |
1072 | goto clean_up_and_return; | |
1073 | } | |
1074 | } | |
1075 | cdrom_count_tracks(cdi, &tracks); | |
1076 | if (tracks.error == CDS_NO_DISC) { | |
1077 | cdinfo(CD_OPEN, "bummer. no disc.\n"); | |
1078 | ret=-ENOMEDIUM; | |
1079 | goto clean_up_and_return; | |
1080 | } | |
1081 | /* CD-Players which don't use O_NONBLOCK, workman | |
1082 | * for example, need bit CDO_CHECK_TYPE cleared! */ | |
1083 | if (tracks.data==0) { | |
1084 | if (cdi->options & CDO_CHECK_TYPE) { | |
1085 | /* give people a warning shot, now that CDO_CHECK_TYPE | |
1086 | is the default case! */ | |
1087 | cdinfo(CD_OPEN, "bummer. wrong media type.\n"); | |
1088 | cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", | |
ba25f9dc | 1089 | (unsigned int)task_pid_nr(current)); |
1da177e4 LT |
1090 | ret=-EMEDIUMTYPE; |
1091 | goto clean_up_and_return; | |
1092 | } | |
1093 | else { | |
1094 | cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n"); | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | cdinfo(CD_OPEN, "all seems well, opening the device.\n"); | |
1099 | ||
1100 | /* all seems well, we can open the device */ | |
1101 | ret = cdo->open(cdi, 0); /* open for data */ | |
1102 | cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret); | |
1103 | /* After all this careful checking, we shouldn't have problems | |
1104 | opening the device, but we don't want the device locked if | |
1105 | this somehow fails... */ | |
1106 | if (ret) { | |
1107 | cdinfo(CD_OPEN, "open device failed.\n"); | |
1108 | goto clean_up_and_return; | |
1109 | } | |
1110 | if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { | |
1111 | cdo->lock_door(cdi, 1); | |
1112 | cdinfo(CD_OPEN, "door locked.\n"); | |
1113 | } | |
1114 | cdinfo(CD_OPEN, "device opened successfully.\n"); | |
1115 | return ret; | |
1116 | ||
1117 | /* Something failed. Try to unlock the drive, because some drivers | |
1118 | (notably ide-cd) lock the drive after every command. This produced | |
1119 | a nasty bug where after mount failed, the drive would remain locked! | |
1120 | This ensures that the drive gets unlocked after a mount fails. This | |
1121 | is a goto to avoid bloating the driver with redundant code. */ | |
1122 | clean_up_and_return: | |
00d6da9b | 1123 | cdinfo(CD_OPEN, "open failed.\n"); |
1da177e4 LT |
1124 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1125 | cdo->lock_door(cdi, 0); | |
1126 | cdinfo(CD_OPEN, "door unlocked.\n"); | |
1127 | } | |
1128 | return ret; | |
1129 | } | |
1130 | ||
1131 | /* This code is similar to that in open_for_data. The routine is called | |
1132 | whenever an audio play operation is requested. | |
1133 | */ | |
ecb80c6a AB |
1134 | static int check_for_audio_disc(struct cdrom_device_info * cdi, |
1135 | struct cdrom_device_ops * cdo) | |
1da177e4 LT |
1136 | { |
1137 | int ret; | |
1138 | tracktype tracks; | |
1139 | cdinfo(CD_OPEN, "entering check_for_audio_disc\n"); | |
1140 | if (!(cdi->options & CDO_CHECK_TYPE)) | |
1141 | return 0; | |
1142 | if (cdo->drive_status != NULL) { | |
1143 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1144 | cdinfo(CD_OPEN, "drive_status=%d\n", ret); | |
1145 | if (ret == CDS_TRAY_OPEN) { | |
1146 | cdinfo(CD_OPEN, "the tray is open...\n"); | |
1147 | /* can/may i close it? */ | |
1148 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1149 | cdi->options & CDO_AUTO_CLOSE) { | |
1150 | cdinfo(CD_OPEN, "trying to close the tray.\n"); | |
1151 | ret=cdo->tray_move(cdi,0); | |
1152 | if (ret) { | |
1153 | cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n"); | |
1154 | /* Ignore the error from the low | |
1155 | level driver. We don't care why it | |
1156 | couldn't close the tray. We only care | |
1157 | that there is no disc in the drive, | |
1158 | since that is the _REAL_ problem here.*/ | |
1159 | return -ENOMEDIUM; | |
1160 | } | |
1161 | } else { | |
1162 | cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n"); | |
1163 | return -ENOMEDIUM; | |
1164 | } | |
1165 | /* Ok, the door should be closed now.. Check again */ | |
1166 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1167 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
1168 | cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); | |
1169 | return -ENOMEDIUM; | |
1170 | } | |
1171 | if (ret!=CDS_DISC_OK) { | |
1172 | cdinfo(CD_OPEN, "bummer. disc isn't ready.\n"); | |
1173 | return -EIO; | |
1174 | } | |
1175 | cdinfo(CD_OPEN, "the tray is now closed.\n"); | |
1176 | } | |
1177 | } | |
1178 | cdrom_count_tracks(cdi, &tracks); | |
1179 | if (tracks.error) | |
1180 | return(tracks.error); | |
1181 | ||
1182 | if (tracks.audio==0) | |
1183 | return -EMEDIUMTYPE; | |
1184 | ||
1185 | return 0; | |
1186 | } | |
1187 | ||
1da177e4 LT |
1188 | int cdrom_release(struct cdrom_device_info *cdi, struct file *fp) |
1189 | { | |
1190 | struct cdrom_device_ops *cdo = cdi->ops; | |
1191 | int opened_for_data; | |
1192 | ||
35841f70 | 1193 | cdinfo(CD_CLOSE, "entering cdrom_release\n"); |
1da177e4 LT |
1194 | |
1195 | if (cdi->use_count > 0) | |
1196 | cdi->use_count--; | |
35841f70 BP |
1197 | |
1198 | if (cdi->use_count == 0) { | |
1da177e4 | 1199 | cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name); |
1da177e4 | 1200 | cdrom_dvd_rw_close_write(cdi); |
35841f70 BP |
1201 | |
1202 | if ((cdo->capability & CDC_LOCK) && !keeplocked) { | |
1203 | cdinfo(CD_CLOSE, "Unlocking door!\n"); | |
1204 | cdo->lock_door(cdi, 0); | |
1205 | } | |
1da177e4 | 1206 | } |
35841f70 | 1207 | |
1da177e4 LT |
1208 | opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || |
1209 | !(fp && fp->f_flags & O_NONBLOCK); | |
1210 | ||
1211 | /* | |
1212 | * flush cache on last write release | |
1213 | */ | |
1214 | if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) | |
1215 | cdrom_close_write(cdi); | |
1216 | ||
1217 | cdo->release(cdi); | |
1218 | if (cdi->use_count == 0) { /* last process that closes dev*/ | |
1219 | if (opened_for_data && | |
1220 | cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) | |
1221 | cdo->tray_move(cdi, 1); | |
1222 | } | |
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | static int cdrom_read_mech_status(struct cdrom_device_info *cdi, | |
1227 | struct cdrom_changer_info *buf) | |
1228 | { | |
1229 | struct packet_command cgc; | |
1230 | struct cdrom_device_ops *cdo = cdi->ops; | |
1231 | int length; | |
1232 | ||
1233 | /* | |
1234 | * Sanyo changer isn't spec compliant (doesn't use regular change | |
1235 | * LOAD_UNLOAD command, and it doesn't implement the mech status | |
1236 | * command below | |
1237 | */ | |
1238 | if (cdi->sanyo_slot) { | |
1239 | buf->hdr.nslots = 3; | |
1240 | buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; | |
1241 | for (length = 0; length < 3; length++) { | |
1242 | buf->slots[length].disc_present = 1; | |
1243 | buf->slots[length].change = 0; | |
1244 | } | |
1245 | return 0; | |
1246 | } | |
1247 | ||
1248 | length = sizeof(struct cdrom_mechstat_header) + | |
1249 | cdi->capacity * sizeof(struct cdrom_slot); | |
1250 | ||
1251 | init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); | |
1252 | cgc.cmd[0] = GPCMD_MECHANISM_STATUS; | |
1253 | cgc.cmd[8] = (length >> 8) & 0xff; | |
1254 | cgc.cmd[9] = length & 0xff; | |
1255 | return cdo->generic_packet(cdi, &cgc); | |
1256 | } | |
1257 | ||
1258 | static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) | |
1259 | { | |
1260 | struct cdrom_changer_info *info; | |
1261 | int ret; | |
1262 | ||
1263 | cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n"); | |
1264 | if (cdi->sanyo_slot) | |
1265 | return CDS_NO_INFO; | |
1266 | ||
1267 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1268 | if (!info) | |
1269 | return -ENOMEM; | |
1270 | ||
1271 | if ((ret = cdrom_read_mech_status(cdi, info))) | |
1272 | goto out_free; | |
1273 | ||
1274 | if (info->slots[slot].disc_present) | |
1275 | ret = CDS_DISC_OK; | |
1276 | else | |
1277 | ret = CDS_NO_DISC; | |
1278 | ||
1279 | out_free: | |
1280 | kfree(info); | |
1281 | return ret; | |
1282 | } | |
1283 | ||
1284 | /* Return the number of slots for an ATAPI/SCSI cdrom, | |
1285 | * return 1 if not a changer. | |
1286 | */ | |
1287 | int cdrom_number_of_slots(struct cdrom_device_info *cdi) | |
1288 | { | |
1289 | int status; | |
1290 | int nslots = 1; | |
1291 | struct cdrom_changer_info *info; | |
1292 | ||
1293 | cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n"); | |
1294 | /* cdrom_read_mech_status requires a valid value for capacity: */ | |
1295 | cdi->capacity = 0; | |
1296 | ||
1297 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1298 | if (!info) | |
1299 | return -ENOMEM; | |
1300 | ||
1301 | if ((status = cdrom_read_mech_status(cdi, info)) == 0) | |
1302 | nslots = info->hdr.nslots; | |
1303 | ||
1304 | kfree(info); | |
1305 | return nslots; | |
1306 | } | |
1307 | ||
1308 | ||
1309 | /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ | |
1310 | static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) | |
1311 | { | |
1312 | struct packet_command cgc; | |
1313 | ||
1314 | cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n"); | |
1315 | if (cdi->sanyo_slot && slot < 0) | |
1316 | return 0; | |
1317 | ||
1318 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
1319 | cgc.cmd[0] = GPCMD_LOAD_UNLOAD; | |
1320 | cgc.cmd[4] = 2 + (slot >= 0); | |
1321 | cgc.cmd[8] = slot; | |
1322 | cgc.timeout = 60 * HZ; | |
1323 | ||
1324 | /* The Sanyo 3 CD changer uses byte 7 of the | |
1325 | GPCMD_TEST_UNIT_READY to command to switch CDs instead of | |
1326 | using the GPCMD_LOAD_UNLOAD opcode. */ | |
1327 | if (cdi->sanyo_slot && -1 < slot) { | |
1328 | cgc.cmd[0] = GPCMD_TEST_UNIT_READY; | |
1329 | cgc.cmd[7] = slot; | |
1330 | cgc.cmd[4] = cgc.cmd[8] = 0; | |
1331 | cdi->sanyo_slot = slot ? slot : 3; | |
1332 | } | |
1333 | ||
1334 | return cdi->ops->generic_packet(cdi, &cgc); | |
1335 | } | |
1336 | ||
1337 | static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) | |
1338 | { | |
1339 | struct cdrom_changer_info *info; | |
1340 | int curslot; | |
1341 | int ret; | |
1342 | ||
1343 | cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n"); | |
1344 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
1345 | return -EDRIVE_CANT_DO_THIS; | |
1346 | ||
1347 | (void) cdi->ops->media_changed(cdi, slot); | |
1348 | ||
1349 | if (slot == CDSL_NONE) { | |
1350 | /* set media changed bits, on both queues */ | |
1351 | cdi->mc_flags = 0x3; | |
1352 | return cdrom_load_unload(cdi, -1); | |
1353 | } | |
1354 | ||
1355 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1356 | if (!info) | |
1357 | return -ENOMEM; | |
1358 | ||
1359 | if ((ret = cdrom_read_mech_status(cdi, info))) { | |
1360 | kfree(info); | |
1361 | return ret; | |
1362 | } | |
1363 | ||
1364 | curslot = info->hdr.curslot; | |
1365 | kfree(info); | |
1366 | ||
1367 | if (cdi->use_count > 1 || keeplocked) { | |
1368 | if (slot == CDSL_CURRENT) { | |
1369 | return curslot; | |
1370 | } else { | |
1371 | return -EBUSY; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | /* Specifying CDSL_CURRENT will attempt to load the currnet slot, | |
1376 | which is useful if it had been previously unloaded. | |
1377 | Whether it can or not, it returns the current slot. | |
1378 | Similarly, if slot happens to be the current one, we still | |
1379 | try and load it. */ | |
1380 | if (slot == CDSL_CURRENT) | |
1381 | slot = curslot; | |
1382 | ||
1383 | /* set media changed bits on both queues */ | |
1384 | cdi->mc_flags = 0x3; | |
1385 | if ((ret = cdrom_load_unload(cdi, slot))) | |
1386 | return ret; | |
1387 | ||
1388 | return slot; | |
1389 | } | |
1390 | ||
1391 | /* We want to make media_changed accessible to the user through an | |
1392 | * ioctl. The main problem now is that we must double-buffer the | |
1393 | * low-level implementation, to assure that the VFS and the user both | |
1394 | * see a medium change once. | |
1395 | */ | |
1396 | ||
1397 | static | |
1398 | int media_changed(struct cdrom_device_info *cdi, int queue) | |
1399 | { | |
1400 | unsigned int mask = (1 << (queue & 1)); | |
1401 | int ret = !!(cdi->mc_flags & mask); | |
1402 | ||
1403 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
1404 | return ret; | |
1405 | /* changed since last call? */ | |
1406 | if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) { | |
1407 | cdi->mc_flags = 0x3; /* set bit on both queues */ | |
1408 | ret |= 1; | |
1409 | cdi->media_written = 0; | |
1410 | } | |
1411 | cdi->mc_flags &= ~mask; /* clear bit */ | |
1412 | return ret; | |
1413 | } | |
1414 | ||
1415 | int cdrom_media_changed(struct cdrom_device_info *cdi) | |
1416 | { | |
1417 | /* This talks to the VFS, which doesn't like errors - just 1 or 0. | |
1418 | * Returning "0" is always safe (media hasn't been changed). Do that | |
1419 | * if the low-level cdrom driver dosn't support media changed. */ | |
1420 | if (cdi == NULL || cdi->ops->media_changed == NULL) | |
1421 | return 0; | |
1422 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
1423 | return 0; | |
1424 | return media_changed(cdi, 0); | |
1425 | } | |
1426 | ||
1427 | /* badly broken, I know. Is due for a fixup anytime. */ | |
1428 | static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks) | |
1429 | { | |
1430 | struct cdrom_tochdr header; | |
1431 | struct cdrom_tocentry entry; | |
1432 | int ret, i; | |
1433 | tracks->data=0; | |
1434 | tracks->audio=0; | |
1435 | tracks->cdi=0; | |
1436 | tracks->xa=0; | |
1437 | tracks->error=0; | |
1438 | cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); | |
1439 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) { | |
1440 | tracks->error=CDS_NO_INFO; | |
1441 | return; | |
1442 | } | |
1443 | /* Grab the TOC header so we can see how many tracks there are */ | |
1444 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) { | |
1445 | if (ret == -ENOMEDIUM) | |
1446 | tracks->error = CDS_NO_DISC; | |
1447 | else | |
1448 | tracks->error = CDS_NO_INFO; | |
1449 | return; | |
1450 | } | |
1451 | /* check what type of tracks are on this disc */ | |
1452 | entry.cdte_format = CDROM_MSF; | |
1453 | for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { | |
1454 | entry.cdte_track = i; | |
1455 | if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { | |
1456 | tracks->error=CDS_NO_INFO; | |
1457 | return; | |
1458 | } | |
1459 | if (entry.cdte_ctrl & CDROM_DATA_TRACK) { | |
1460 | if (entry.cdte_format == 0x10) | |
1461 | tracks->cdi++; | |
1462 | else if (entry.cdte_format == 0x20) | |
1463 | tracks->xa++; | |
1464 | else | |
1465 | tracks->data++; | |
1466 | } else | |
1467 | tracks->audio++; | |
1468 | cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", | |
1469 | i, entry.cdte_format, entry.cdte_ctrl); | |
1470 | } | |
1471 | cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", | |
1472 | header.cdth_trk1, tracks->audio, tracks->data, | |
1473 | tracks->cdi, tracks->xa); | |
1474 | } | |
1475 | ||
1476 | /* Requests to the low-level drivers will /always/ be done in the | |
1477 | following format convention: | |
1478 | ||
1479 | CDROM_LBA: all data-related requests. | |
1480 | CDROM_MSF: all audio-related requests. | |
1481 | ||
1482 | However, a low-level implementation is allowed to refuse this | |
1483 | request, and return information in its own favorite format. | |
1484 | ||
1485 | It doesn't make sense /at all/ to ask for a play_audio in LBA | |
1486 | format, or ask for multi-session info in MSF format. However, for | |
1487 | backward compatibility these format requests will be satisfied, but | |
1488 | the requests to the low-level drivers will be sanitized in the more | |
1489 | meaningful format indicated above. | |
1490 | */ | |
1491 | ||
1492 | static | |
1493 | void sanitize_format(union cdrom_addr *addr, | |
1494 | u_char * curr, u_char requested) | |
1495 | { | |
1496 | if (*curr == requested) | |
1497 | return; /* nothing to be done! */ | |
1498 | if (requested == CDROM_LBA) { | |
1499 | addr->lba = (int) addr->msf.frame + | |
1500 | 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); | |
1501 | } else { /* CDROM_MSF */ | |
1502 | int lba = addr->lba; | |
1503 | addr->msf.frame = lba % 75; | |
1504 | lba /= 75; | |
1505 | lba += 2; | |
1506 | addr->msf.second = lba % 60; | |
1507 | addr->msf.minute = lba / 60; | |
1508 | } | |
1509 | *curr = requested; | |
1510 | } | |
1511 | ||
1512 | void init_cdrom_command(struct packet_command *cgc, void *buf, int len, | |
1513 | int type) | |
1514 | { | |
1515 | memset(cgc, 0, sizeof(struct packet_command)); | |
1516 | if (buf) | |
1517 | memset(buf, 0, len); | |
1518 | cgc->buffer = (char *) buf; | |
1519 | cgc->buflen = len; | |
1520 | cgc->data_direction = type; | |
2e11c207 | 1521 | cgc->timeout = CDROM_DEF_TIMEOUT; |
1da177e4 LT |
1522 | } |
1523 | ||
1524 | /* DVD handling */ | |
1525 | ||
1526 | #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) | |
1527 | #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) | |
1528 | ||
1529 | static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1530 | { | |
1531 | cgc->cmd[0] = GPCMD_REPORT_KEY; | |
1532 | cgc->cmd[10] = type | (agid << 6); | |
1533 | switch (type) { | |
1534 | case 0: case 8: case 5: { | |
1535 | cgc->buflen = 8; | |
1536 | break; | |
1537 | } | |
1538 | case 1: { | |
1539 | cgc->buflen = 16; | |
1540 | break; | |
1541 | } | |
1542 | case 2: case 4: { | |
1543 | cgc->buflen = 12; | |
1544 | break; | |
1545 | } | |
1546 | } | |
1547 | cgc->cmd[9] = cgc->buflen; | |
1548 | cgc->data_direction = CGC_DATA_READ; | |
1549 | } | |
1550 | ||
1551 | static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1552 | { | |
1553 | cgc->cmd[0] = GPCMD_SEND_KEY; | |
1554 | cgc->cmd[10] = type | (agid << 6); | |
1555 | switch (type) { | |
1556 | case 1: { | |
1557 | cgc->buflen = 16; | |
1558 | break; | |
1559 | } | |
1560 | case 3: { | |
1561 | cgc->buflen = 12; | |
1562 | break; | |
1563 | } | |
1564 | case 6: { | |
1565 | cgc->buflen = 8; | |
1566 | break; | |
1567 | } | |
1568 | } | |
1569 | cgc->cmd[9] = cgc->buflen; | |
1570 | cgc->data_direction = CGC_DATA_WRITE; | |
1571 | } | |
1572 | ||
1573 | static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) | |
1574 | { | |
1575 | int ret; | |
fce53847 | 1576 | u_char buf[20]; |
1da177e4 LT |
1577 | struct packet_command cgc; |
1578 | struct cdrom_device_ops *cdo = cdi->ops; | |
fce53847 | 1579 | rpc_state_t rpc_state; |
1da177e4 | 1580 | |
fce53847 | 1581 | memset(buf, 0, sizeof(buf)); |
1da177e4 LT |
1582 | init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); |
1583 | ||
1584 | switch (ai->type) { | |
1585 | /* LU data send */ | |
1586 | case DVD_LU_SEND_AGID: | |
1587 | cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n"); | |
1588 | cgc.quiet = 1; | |
1589 | setup_report_key(&cgc, ai->lsa.agid, 0); | |
1590 | ||
1591 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1592 | return ret; |
1da177e4 LT |
1593 | |
1594 | ai->lsa.agid = buf[7] >> 6; | |
1595 | /* Returning data, let host change state */ | |
1596 | break; | |
1597 | ||
1598 | case DVD_LU_SEND_KEY1: | |
1599 | cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); | |
1600 | setup_report_key(&cgc, ai->lsk.agid, 2); | |
1601 | ||
1602 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1603 | return ret; |
1da177e4 LT |
1604 | |
1605 | copy_key(ai->lsk.key, &buf[4]); | |
1606 | /* Returning data, let host change state */ | |
1607 | break; | |
1608 | ||
1609 | case DVD_LU_SEND_CHALLENGE: | |
1610 | cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); | |
1611 | setup_report_key(&cgc, ai->lsc.agid, 1); | |
1612 | ||
1613 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1614 | return ret; |
1da177e4 LT |
1615 | |
1616 | copy_chal(ai->lsc.chal, &buf[4]); | |
1617 | /* Returning data, let host change state */ | |
1618 | break; | |
1619 | ||
1620 | /* Post-auth key */ | |
1621 | case DVD_LU_SEND_TITLE_KEY: | |
1622 | cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); | |
1623 | cgc.quiet = 1; | |
1624 | setup_report_key(&cgc, ai->lstk.agid, 4); | |
1625 | cgc.cmd[5] = ai->lstk.lba; | |
1626 | cgc.cmd[4] = ai->lstk.lba >> 8; | |
1627 | cgc.cmd[3] = ai->lstk.lba >> 16; | |
1628 | cgc.cmd[2] = ai->lstk.lba >> 24; | |
1629 | ||
1630 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1631 | return ret; |
1da177e4 LT |
1632 | |
1633 | ai->lstk.cpm = (buf[4] >> 7) & 1; | |
1634 | ai->lstk.cp_sec = (buf[4] >> 6) & 1; | |
1635 | ai->lstk.cgms = (buf[4] >> 4) & 3; | |
1636 | copy_key(ai->lstk.title_key, &buf[5]); | |
1637 | /* Returning data, let host change state */ | |
1638 | break; | |
1639 | ||
1640 | case DVD_LU_SEND_ASF: | |
1641 | cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n"); | |
1642 | setup_report_key(&cgc, ai->lsasf.agid, 5); | |
1643 | ||
1644 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1645 | return ret; |
1da177e4 LT |
1646 | |
1647 | ai->lsasf.asf = buf[7] & 1; | |
1648 | break; | |
1649 | ||
1650 | /* LU data receive (LU changes state) */ | |
1651 | case DVD_HOST_SEND_CHALLENGE: | |
1652 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); | |
1653 | setup_send_key(&cgc, ai->hsc.agid, 1); | |
1654 | buf[1] = 0xe; | |
1655 | copy_chal(&buf[4], ai->hsc.chal); | |
1656 | ||
1657 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1658 | return ret; |
1da177e4 LT |
1659 | |
1660 | ai->type = DVD_LU_SEND_KEY1; | |
1661 | break; | |
1662 | ||
1663 | case DVD_HOST_SEND_KEY2: | |
1664 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); | |
1665 | setup_send_key(&cgc, ai->hsk.agid, 3); | |
1666 | buf[1] = 0xa; | |
1667 | copy_key(&buf[4], ai->hsk.key); | |
1668 | ||
1669 | if ((ret = cdo->generic_packet(cdi, &cgc))) { | |
1670 | ai->type = DVD_AUTH_FAILURE; | |
fce53847 | 1671 | return ret; |
1da177e4 LT |
1672 | } |
1673 | ai->type = DVD_AUTH_ESTABLISHED; | |
1674 | break; | |
1675 | ||
1676 | /* Misc */ | |
1677 | case DVD_INVALIDATE_AGID: | |
1678 | cgc.quiet = 1; | |
1679 | cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); | |
1680 | setup_report_key(&cgc, ai->lsa.agid, 0x3f); | |
1681 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1682 | return ret; |
1da177e4 LT |
1683 | break; |
1684 | ||
1685 | /* Get region settings */ | |
1686 | case DVD_LU_SEND_RPC_STATE: | |
1687 | cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); | |
1688 | setup_report_key(&cgc, 0, 8); | |
fce53847 FT |
1689 | memset(&rpc_state, 0, sizeof(rpc_state_t)); |
1690 | cgc.buffer = (char *) &rpc_state; | |
1da177e4 LT |
1691 | |
1692 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1693 | return ret; |
1da177e4 | 1694 | |
fce53847 FT |
1695 | ai->lrpcs.type = rpc_state.type_code; |
1696 | ai->lrpcs.vra = rpc_state.vra; | |
1697 | ai->lrpcs.ucca = rpc_state.ucca; | |
1698 | ai->lrpcs.region_mask = rpc_state.region_mask; | |
1699 | ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; | |
1da177e4 LT |
1700 | break; |
1701 | ||
1702 | /* Set region settings */ | |
1703 | case DVD_HOST_SEND_RPC_STATE: | |
1704 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); | |
1705 | setup_send_key(&cgc, 0, 6); | |
1706 | buf[1] = 6; | |
1707 | buf[4] = ai->hrpcs.pdrc; | |
1708 | ||
1709 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1710 | return ret; |
1da177e4 LT |
1711 | break; |
1712 | ||
1713 | default: | |
1714 | cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); | |
fce53847 | 1715 | return -ENOTTY; |
1da177e4 | 1716 | } |
fce53847 FT |
1717 | |
1718 | return 0; | |
1da177e4 LT |
1719 | } |
1720 | ||
1721 | static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s) | |
1722 | { | |
fce53847 | 1723 | unsigned char buf[21], *base; |
1da177e4 LT |
1724 | struct dvd_layer *layer; |
1725 | struct packet_command cgc; | |
1726 | struct cdrom_device_ops *cdo = cdi->ops; | |
1727 | int ret, layer_num = s->physical.layer_num; | |
1728 | ||
1729 | if (layer_num >= DVD_LAYERS) | |
1730 | return -EINVAL; | |
1731 | ||
fce53847 | 1732 | init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ); |
1da177e4 LT |
1733 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
1734 | cgc.cmd[6] = layer_num; | |
1735 | cgc.cmd[7] = s->type; | |
1736 | cgc.cmd[9] = cgc.buflen & 0xff; | |
1737 | ||
1738 | /* | |
1739 | * refrain from reporting errors on non-existing layers (mainly) | |
1740 | */ | |
1741 | cgc.quiet = 1; | |
1742 | ||
1743 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1744 | return ret; |
1da177e4 LT |
1745 | |
1746 | base = &buf[4]; | |
1747 | layer = &s->physical.layer[layer_num]; | |
1748 | ||
1749 | /* | |
1750 | * place the data... really ugly, but at least we won't have to | |
1751 | * worry about endianess in userspace. | |
1752 | */ | |
1753 | memset(layer, 0, sizeof(*layer)); | |
1754 | layer->book_version = base[0] & 0xf; | |
1755 | layer->book_type = base[0] >> 4; | |
1756 | layer->min_rate = base[1] & 0xf; | |
1757 | layer->disc_size = base[1] >> 4; | |
1758 | layer->layer_type = base[2] & 0xf; | |
1759 | layer->track_path = (base[2] >> 4) & 1; | |
1760 | layer->nlayers = (base[2] >> 5) & 3; | |
1761 | layer->track_density = base[3] & 0xf; | |
1762 | layer->linear_density = base[3] >> 4; | |
1763 | layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; | |
1764 | layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; | |
1765 | layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; | |
1766 | layer->bca = base[16] >> 7; | |
1767 | ||
fce53847 | 1768 | return 0; |
1da177e4 LT |
1769 | } |
1770 | ||
1771 | static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s) | |
1772 | { | |
1773 | int ret; | |
fce53847 | 1774 | u_char buf[8]; |
1da177e4 LT |
1775 | struct packet_command cgc; |
1776 | struct cdrom_device_ops *cdo = cdi->ops; | |
1777 | ||
fce53847 | 1778 | init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ); |
1da177e4 LT |
1779 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
1780 | cgc.cmd[6] = s->copyright.layer_num; | |
1781 | cgc.cmd[7] = s->type; | |
1782 | cgc.cmd[8] = cgc.buflen >> 8; | |
1783 | cgc.cmd[9] = cgc.buflen & 0xff; | |
1784 | ||
1785 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1786 | return ret; |
1da177e4 LT |
1787 | |
1788 | s->copyright.cpst = buf[4]; | |
1789 | s->copyright.rmi = buf[5]; | |
1790 | ||
fce53847 | 1791 | return 0; |
1da177e4 LT |
1792 | } |
1793 | ||
1794 | static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s) | |
1795 | { | |
1796 | int ret, size; | |
1797 | u_char *buf; | |
1798 | struct packet_command cgc; | |
1799 | struct cdrom_device_ops *cdo = cdi->ops; | |
1800 | ||
1801 | size = sizeof(s->disckey.value) + 4; | |
1802 | ||
5cbded58 | 1803 | if ((buf = kmalloc(size, GFP_KERNEL)) == NULL) |
1da177e4 LT |
1804 | return -ENOMEM; |
1805 | ||
1806 | init_cdrom_command(&cgc, buf, size, CGC_DATA_READ); | |
1807 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1808 | cgc.cmd[7] = s->type; | |
1809 | cgc.cmd[8] = size >> 8; | |
1810 | cgc.cmd[9] = size & 0xff; | |
1811 | cgc.cmd[10] = s->disckey.agid << 6; | |
1812 | ||
1813 | if (!(ret = cdo->generic_packet(cdi, &cgc))) | |
1814 | memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); | |
1815 | ||
1816 | kfree(buf); | |
1817 | return ret; | |
1818 | } | |
1819 | ||
1820 | static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s) | |
1821 | { | |
1822 | int ret; | |
fce53847 | 1823 | u_char buf[4 + 188]; |
1da177e4 LT |
1824 | struct packet_command cgc; |
1825 | struct cdrom_device_ops *cdo = cdi->ops; | |
1826 | ||
fce53847 | 1827 | init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ); |
1da177e4 LT |
1828 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
1829 | cgc.cmd[7] = s->type; | |
454d6fbc | 1830 | cgc.cmd[9] = cgc.buflen & 0xff; |
1da177e4 LT |
1831 | |
1832 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1833 | return ret; |
1da177e4 LT |
1834 | |
1835 | s->bca.len = buf[0] << 8 | buf[1]; | |
1836 | if (s->bca.len < 12 || s->bca.len > 188) { | |
1837 | cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len); | |
fce53847 | 1838 | return -EIO; |
1da177e4 LT |
1839 | } |
1840 | memcpy(s->bca.value, &buf[4], s->bca.len); | |
fce53847 FT |
1841 | |
1842 | return 0; | |
1da177e4 LT |
1843 | } |
1844 | ||
1845 | static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s) | |
1846 | { | |
1847 | int ret = 0, size; | |
1848 | u_char *buf; | |
1849 | struct packet_command cgc; | |
1850 | struct cdrom_device_ops *cdo = cdi->ops; | |
1851 | ||
1852 | size = sizeof(s->manufact.value) + 4; | |
1853 | ||
5cbded58 | 1854 | if ((buf = kmalloc(size, GFP_KERNEL)) == NULL) |
1da177e4 LT |
1855 | return -ENOMEM; |
1856 | ||
1857 | init_cdrom_command(&cgc, buf, size, CGC_DATA_READ); | |
1858 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1859 | cgc.cmd[7] = s->type; | |
1860 | cgc.cmd[8] = size >> 8; | |
1861 | cgc.cmd[9] = size & 0xff; | |
1862 | ||
1863 | if ((ret = cdo->generic_packet(cdi, &cgc))) { | |
1864 | kfree(buf); | |
1865 | return ret; | |
1866 | } | |
1867 | ||
1868 | s->manufact.len = buf[0] << 8 | buf[1]; | |
1869 | if (s->manufact.len < 0 || s->manufact.len > 2048) { | |
1870 | cdinfo(CD_WARNING, "Received invalid manufacture info length" | |
1871 | " (%d)\n", s->manufact.len); | |
1872 | ret = -EIO; | |
1873 | } else { | |
1874 | memcpy(s->manufact.value, &buf[4], s->manufact.len); | |
1875 | } | |
1876 | ||
1877 | kfree(buf); | |
1878 | return ret; | |
1879 | } | |
1880 | ||
1881 | static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s) | |
1882 | { | |
1883 | switch (s->type) { | |
1884 | case DVD_STRUCT_PHYSICAL: | |
1885 | return dvd_read_physical(cdi, s); | |
1886 | ||
1887 | case DVD_STRUCT_COPYRIGHT: | |
1888 | return dvd_read_copyright(cdi, s); | |
1889 | ||
1890 | case DVD_STRUCT_DISCKEY: | |
1891 | return dvd_read_disckey(cdi, s); | |
1892 | ||
1893 | case DVD_STRUCT_BCA: | |
1894 | return dvd_read_bca(cdi, s); | |
1895 | ||
1896 | case DVD_STRUCT_MANUFACT: | |
1897 | return dvd_read_manufact(cdi, s); | |
1898 | ||
1899 | default: | |
1900 | cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", | |
1901 | s->type); | |
1902 | return -EINVAL; | |
1903 | } | |
1904 | } | |
1905 | ||
1906 | int cdrom_mode_sense(struct cdrom_device_info *cdi, | |
1907 | struct packet_command *cgc, | |
1908 | int page_code, int page_control) | |
1909 | { | |
1910 | struct cdrom_device_ops *cdo = cdi->ops; | |
1911 | ||
1912 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1913 | ||
1914 | cgc->cmd[0] = GPCMD_MODE_SENSE_10; | |
1915 | cgc->cmd[2] = page_code | (page_control << 6); | |
1916 | cgc->cmd[7] = cgc->buflen >> 8; | |
1917 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1918 | cgc->data_direction = CGC_DATA_READ; | |
1919 | return cdo->generic_packet(cdi, cgc); | |
1920 | } | |
1921 | ||
1922 | int cdrom_mode_select(struct cdrom_device_info *cdi, | |
1923 | struct packet_command *cgc) | |
1924 | { | |
1925 | struct cdrom_device_ops *cdo = cdi->ops; | |
1926 | ||
1927 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1928 | memset(cgc->buffer, 0, 2); | |
1929 | cgc->cmd[0] = GPCMD_MODE_SELECT_10; | |
1930 | cgc->cmd[1] = 0x10; /* PF */ | |
1931 | cgc->cmd[7] = cgc->buflen >> 8; | |
1932 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1933 | cgc->data_direction = CGC_DATA_WRITE; | |
1934 | return cdo->generic_packet(cdi, cgc); | |
1935 | } | |
1936 | ||
1937 | static int cdrom_read_subchannel(struct cdrom_device_info *cdi, | |
1938 | struct cdrom_subchnl *subchnl, int mcn) | |
1939 | { | |
1940 | struct cdrom_device_ops *cdo = cdi->ops; | |
1941 | struct packet_command cgc; | |
fce53847 | 1942 | char buffer[32]; |
1da177e4 LT |
1943 | int ret; |
1944 | ||
1945 | init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); | |
1946 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
1947 | cgc.cmd[1] = 2; /* MSF addressing */ | |
1948 | cgc.cmd[2] = 0x40; /* request subQ data */ | |
1949 | cgc.cmd[3] = mcn ? 2 : 1; | |
1950 | cgc.cmd[8] = 16; | |
1951 | ||
1952 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1953 | return ret; |
1da177e4 LT |
1954 | |
1955 | subchnl->cdsc_audiostatus = cgc.buffer[1]; | |
1956 | subchnl->cdsc_format = CDROM_MSF; | |
1957 | subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; | |
1958 | subchnl->cdsc_trk = cgc.buffer[6]; | |
1959 | subchnl->cdsc_ind = cgc.buffer[7]; | |
1960 | ||
1961 | subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; | |
1962 | subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; | |
1963 | subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; | |
1964 | subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; | |
1965 | subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; | |
1966 | subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; | |
1967 | ||
fce53847 | 1968 | return 0; |
1da177e4 LT |
1969 | } |
1970 | ||
1971 | /* | |
1972 | * Specific READ_10 interface | |
1973 | */ | |
1974 | static int cdrom_read_cd(struct cdrom_device_info *cdi, | |
1975 | struct packet_command *cgc, int lba, | |
1976 | int blocksize, int nblocks) | |
1977 | { | |
1978 | struct cdrom_device_ops *cdo = cdi->ops; | |
1979 | ||
1980 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
1981 | cgc->cmd[0] = GPCMD_READ_10; | |
1982 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
1983 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
1984 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
1985 | cgc->cmd[5] = lba & 0xff; | |
1986 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
1987 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
1988 | cgc->cmd[8] = nblocks & 0xff; | |
1989 | cgc->buflen = blocksize * nblocks; | |
1990 | return cdo->generic_packet(cdi, cgc); | |
1991 | } | |
1992 | ||
1993 | /* very generic interface for reading the various types of blocks */ | |
1994 | static int cdrom_read_block(struct cdrom_device_info *cdi, | |
1995 | struct packet_command *cgc, | |
1996 | int lba, int nblocks, int format, int blksize) | |
1997 | { | |
1998 | struct cdrom_device_ops *cdo = cdi->ops; | |
1999 | ||
2000 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
2001 | cgc->cmd[0] = GPCMD_READ_CD; | |
2002 | /* expected sector size - cdda,mode1,etc. */ | |
2003 | cgc->cmd[1] = format << 2; | |
2004 | /* starting address */ | |
2005 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
2006 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
2007 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
2008 | cgc->cmd[5] = lba & 0xff; | |
2009 | /* number of blocks */ | |
2010 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2011 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2012 | cgc->cmd[8] = nblocks & 0xff; | |
2013 | cgc->buflen = blksize * nblocks; | |
2014 | ||
2015 | /* set the header info returned */ | |
2016 | switch (blksize) { | |
2017 | case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; | |
2018 | case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; | |
2019 | case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; | |
2020 | default : cgc->cmd[9] = 0x10; | |
2021 | } | |
2022 | ||
2023 | return cdo->generic_packet(cdi, cgc); | |
2024 | } | |
2025 | ||
2026 | static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2027 | int lba, int nframes) | |
2028 | { | |
2029 | struct packet_command cgc; | |
2030 | int ret = 0; | |
2031 | int nr; | |
2032 | ||
2033 | cdi->last_sense = 0; | |
2034 | ||
2035 | memset(&cgc, 0, sizeof(cgc)); | |
2036 | ||
2037 | /* | |
2038 | * start with will ra.nframes size, back down if alloc fails | |
2039 | */ | |
2040 | nr = nframes; | |
2041 | do { | |
2042 | cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); | |
2043 | if (cgc.buffer) | |
2044 | break; | |
2045 | ||
2046 | nr >>= 1; | |
2047 | } while (nr); | |
2048 | ||
2049 | if (!nr) | |
2050 | return -ENOMEM; | |
2051 | ||
2052 | if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) { | |
2053 | ret = -EFAULT; | |
2054 | goto out; | |
2055 | } | |
2056 | ||
2057 | cgc.data_direction = CGC_DATA_READ; | |
2058 | while (nframes > 0) { | |
2059 | if (nr > nframes) | |
2060 | nr = nframes; | |
2061 | ||
2062 | ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); | |
2063 | if (ret) | |
2064 | break; | |
2065 | if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { | |
2066 | ret = -EFAULT; | |
2067 | break; | |
2068 | } | |
2069 | ubuf += CD_FRAMESIZE_RAW * nr; | |
2070 | nframes -= nr; | |
2071 | lba += nr; | |
2072 | } | |
2073 | out: | |
2074 | kfree(cgc.buffer); | |
2075 | return ret; | |
2076 | } | |
2077 | ||
2078 | static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2079 | int lba, int nframes) | |
2080 | { | |
165125e1 | 2081 | struct request_queue *q = cdi->disk->queue; |
1da177e4 LT |
2082 | struct request *rq; |
2083 | struct bio *bio; | |
2084 | unsigned int len; | |
2085 | int nr, ret = 0; | |
2086 | ||
2087 | if (!q) | |
2088 | return -ENXIO; | |
2089 | ||
dd1cab95 JA |
2090 | rq = blk_get_request(q, READ, GFP_KERNEL); |
2091 | if (!rq) | |
2092 | return -ENOMEM; | |
2093 | ||
1da177e4 LT |
2094 | cdi->last_sense = 0; |
2095 | ||
2096 | while (nframes) { | |
2097 | nr = nframes; | |
2098 | if (cdi->cdda_method == CDDA_BPC_SINGLE) | |
2099 | nr = 1; | |
2100 | if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9)) | |
2101 | nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW; | |
2102 | ||
2103 | len = nr * CD_FRAMESIZE_RAW; | |
2104 | ||
dd1cab95 JA |
2105 | ret = blk_rq_map_user(q, rq, ubuf, len); |
2106 | if (ret) | |
2107 | break; | |
1da177e4 | 2108 | |
1da177e4 LT |
2109 | rq->cmd[0] = GPCMD_READ_CD; |
2110 | rq->cmd[1] = 1 << 2; | |
2111 | rq->cmd[2] = (lba >> 24) & 0xff; | |
2112 | rq->cmd[3] = (lba >> 16) & 0xff; | |
2113 | rq->cmd[4] = (lba >> 8) & 0xff; | |
2114 | rq->cmd[5] = lba & 0xff; | |
2115 | rq->cmd[6] = (nr >> 16) & 0xff; | |
2116 | rq->cmd[7] = (nr >> 8) & 0xff; | |
2117 | rq->cmd[8] = nr & 0xff; | |
2118 | rq->cmd[9] = 0xf8; | |
2119 | ||
2120 | rq->cmd_len = 12; | |
4aff5e23 | 2121 | rq->cmd_type = REQ_TYPE_BLOCK_PC; |
1da177e4 LT |
2122 | rq->timeout = 60 * HZ; |
2123 | bio = rq->bio; | |
2124 | ||
994ca9a1 | 2125 | if (blk_execute_rq(q, cdi->disk, rq, 0)) { |
1da177e4 LT |
2126 | struct request_sense *s = rq->sense; |
2127 | ret = -EIO; | |
2128 | cdi->last_sense = s->sense_key; | |
2129 | } | |
2130 | ||
8e5cfc45 | 2131 | if (blk_rq_unmap_user(bio)) |
1da177e4 LT |
2132 | ret = -EFAULT; |
2133 | ||
2134 | if (ret) | |
2135 | break; | |
2136 | ||
2137 | nframes -= nr; | |
2138 | lba += nr; | |
2139 | ubuf += len; | |
2140 | } | |
2141 | ||
dd1cab95 | 2142 | blk_put_request(rq); |
1da177e4 LT |
2143 | return ret; |
2144 | } | |
2145 | ||
2146 | static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2147 | int lba, int nframes) | |
2148 | { | |
2149 | int ret; | |
2150 | ||
2151 | if (cdi->cdda_method == CDDA_OLD) | |
2152 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2153 | ||
2154 | retry: | |
2155 | /* | |
2156 | * for anything else than success and io error, we need to retry | |
2157 | */ | |
2158 | ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); | |
2159 | if (!ret || ret != -EIO) | |
2160 | return ret; | |
2161 | ||
2162 | /* | |
2163 | * I've seen drives get sense 4/8/3 udma crc errors on multi | |
2164 | * frame dma, so drop to single frame dma if we need to | |
2165 | */ | |
2166 | if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { | |
2167 | printk("cdrom: dropping to single frame dma\n"); | |
2168 | cdi->cdda_method = CDDA_BPC_SINGLE; | |
2169 | goto retry; | |
2170 | } | |
2171 | ||
2172 | /* | |
2173 | * so we have an io error of some sort with multi frame dma. if the | |
2174 | * condition wasn't a hardware error | |
2175 | * problems, not for any error | |
2176 | */ | |
2177 | if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) | |
2178 | return ret; | |
2179 | ||
2180 | printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense); | |
2181 | cdi->cdda_method = CDDA_OLD; | |
2182 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2183 | } | |
2184 | ||
d2c5d4fc CH |
2185 | static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, |
2186 | void __user *argp) | |
1da177e4 | 2187 | { |
d2c5d4fc CH |
2188 | struct cdrom_multisession ms_info; |
2189 | u8 requested_format; | |
1da177e4 LT |
2190 | int ret; |
2191 | ||
d2c5d4fc CH |
2192 | cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); |
2193 | ||
2194 | if (!(cdi->ops->capability & CDC_MULTI_SESSION)) | |
2195 | return -ENOSYS; | |
2196 | ||
2197 | if (copy_from_user(&ms_info, argp, sizeof(ms_info))) | |
2198 | return -EFAULT; | |
2199 | ||
2200 | requested_format = ms_info.addr_format; | |
2201 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2202 | return -EINVAL; | |
2203 | ms_info.addr_format = CDROM_LBA; | |
2204 | ||
2205 | ret = cdi->ops->get_last_session(cdi, &ms_info); | |
2206 | if (ret) | |
1da177e4 LT |
2207 | return ret; |
2208 | ||
d2c5d4fc CH |
2209 | sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); |
2210 | ||
2211 | if (copy_to_user(argp, &ms_info, sizeof(ms_info))) | |
2212 | return -EFAULT; | |
2213 | ||
2214 | cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); | |
2215 | return 0; | |
2216 | } | |
2217 | ||
2218 | static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) | |
2219 | { | |
2220 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n"); | |
2221 | ||
2222 | if (!CDROM_CAN(CDC_OPEN_TRAY)) | |
2223 | return -ENOSYS; | |
2224 | if (cdi->use_count != 1 || keeplocked) | |
2225 | return -EBUSY; | |
2226 | if (CDROM_CAN(CDC_LOCK)) { | |
2227 | int ret = cdi->ops->lock_door(cdi, 0); | |
2228 | if (ret) | |
1da177e4 | 2229 | return ret; |
d2c5d4fc | 2230 | } |
1da177e4 | 2231 | |
d2c5d4fc CH |
2232 | return cdi->ops->tray_move(cdi, 1); |
2233 | } | |
1da177e4 | 2234 | |
d2c5d4fc CH |
2235 | static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) |
2236 | { | |
2237 | cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); | |
1da177e4 | 2238 | |
d2c5d4fc CH |
2239 | if (!CDROM_CAN(CDC_CLOSE_TRAY)) |
2240 | return -ENOSYS; | |
2241 | return cdi->ops->tray_move(cdi, 0); | |
2242 | } | |
1da177e4 | 2243 | |
d2c5d4fc CH |
2244 | static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, |
2245 | unsigned long arg) | |
2246 | { | |
2247 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); | |
1da177e4 | 2248 | |
d2c5d4fc CH |
2249 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
2250 | return -ENOSYS; | |
2251 | if (keeplocked) | |
2252 | return -EBUSY; | |
1da177e4 | 2253 | |
d2c5d4fc CH |
2254 | cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); |
2255 | if (arg) | |
2256 | cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; | |
2257 | return 0; | |
2258 | } | |
1da177e4 | 2259 | |
d2c5d4fc CH |
2260 | static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, |
2261 | unsigned long arg) | |
2262 | { | |
2263 | struct cdrom_changer_info *info; | |
2264 | int ret; | |
1da177e4 | 2265 | |
d2c5d4fc | 2266 | cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); |
1da177e4 | 2267 | |
d2c5d4fc CH |
2268 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
2269 | return -ENOSYS; | |
1da177e4 | 2270 | |
d2c5d4fc CH |
2271 | /* cannot select disc or select current disc */ |
2272 | if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) | |
2273 | return media_changed(cdi, 1); | |
1da177e4 | 2274 | |
d2c5d4fc CH |
2275 | if ((unsigned int)arg >= cdi->capacity) |
2276 | return -EINVAL; | |
1da177e4 | 2277 | |
d2c5d4fc CH |
2278 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
2279 | if (!info) | |
2280 | return -ENOMEM; | |
1da177e4 | 2281 | |
d2c5d4fc CH |
2282 | ret = cdrom_read_mech_status(cdi, info); |
2283 | if (!ret) | |
2284 | ret = info->slots[arg].change; | |
2285 | kfree(info); | |
2286 | return ret; | |
2287 | } | |
1da177e4 | 2288 | |
d2c5d4fc CH |
2289 | static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, |
2290 | unsigned long arg) | |
2291 | { | |
2292 | cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); | |
1da177e4 | 2293 | |
d2c5d4fc CH |
2294 | /* |
2295 | * Options need to be in sync with capability. | |
2296 | * Too late for that, so we have to check each one separately. | |
2297 | */ | |
2298 | switch (arg) { | |
2299 | case CDO_USE_FFLAGS: | |
2300 | case CDO_CHECK_TYPE: | |
2301 | break; | |
2302 | case CDO_LOCK: | |
2303 | if (!CDROM_CAN(CDC_LOCK)) | |
2304 | return -ENOSYS; | |
2305 | break; | |
2306 | case 0: | |
2307 | return cdi->options; | |
2308 | /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ | |
2309 | default: | |
2310 | if (!CDROM_CAN(arg)) | |
1da177e4 | 2311 | return -ENOSYS; |
d2c5d4fc CH |
2312 | } |
2313 | cdi->options |= (int) arg; | |
2314 | return cdi->options; | |
2315 | } | |
1da177e4 | 2316 | |
d2c5d4fc CH |
2317 | static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, |
2318 | unsigned long arg) | |
2319 | { | |
2320 | cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); | |
1da177e4 | 2321 | |
d2c5d4fc CH |
2322 | cdi->options &= ~(int) arg; |
2323 | return cdi->options; | |
2324 | } | |
1da177e4 | 2325 | |
d2c5d4fc CH |
2326 | static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, |
2327 | unsigned long arg) | |
2328 | { | |
2329 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); | |
1da177e4 | 2330 | |
d2c5d4fc CH |
2331 | if (!CDROM_CAN(CDC_SELECT_SPEED)) |
2332 | return -ENOSYS; | |
2333 | return cdi->ops->select_speed(cdi, arg); | |
2334 | } | |
1da177e4 | 2335 | |
d2c5d4fc CH |
2336 | static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, |
2337 | unsigned long arg) | |
2338 | { | |
2339 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); | |
2340 | ||
2341 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
2342 | return -ENOSYS; | |
2343 | ||
2344 | if (arg != CDSL_CURRENT && arg != CDSL_NONE) { | |
2345 | if ((int)arg >= cdi->capacity) | |
2346 | return -EINVAL; | |
2347 | } | |
2348 | ||
2349 | /* | |
2350 | * ->select_disc is a hook to allow a driver-specific way of | |
2351 | * seleting disc. However, since there is no equivalent hook for | |
2352 | * cdrom_slot_status this may not actually be useful... | |
2353 | */ | |
2354 | if (cdi->ops->select_disc) | |
2355 | return cdi->ops->select_disc(cdi, arg); | |
2356 | ||
2357 | cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n"); | |
2358 | return cdrom_select_disc(cdi, arg); | |
2359 | } | |
2360 | ||
2361 | static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, | |
2362 | struct block_device *bdev) | |
2363 | { | |
2364 | cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n"); | |
2365 | ||
2366 | if (!capable(CAP_SYS_ADMIN)) | |
2367 | return -EACCES; | |
2368 | if (!CDROM_CAN(CDC_RESET)) | |
2369 | return -ENOSYS; | |
f98393a6 | 2370 | invalidate_bdev(bdev); |
d2c5d4fc CH |
2371 | return cdi->ops->reset(cdi); |
2372 | } | |
2373 | ||
2374 | static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, | |
2375 | unsigned long arg) | |
2376 | { | |
2377 | cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl"); | |
2378 | ||
2379 | if (!CDROM_CAN(CDC_LOCK)) | |
2380 | return -EDRIVE_CANT_DO_THIS; | |
2381 | ||
2382 | keeplocked = arg ? 1 : 0; | |
2383 | ||
2384 | /* | |
2385 | * Don't unlock the door on multiple opens by default, but allow | |
2386 | * root to do so. | |
2387 | */ | |
2388 | if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) | |
2389 | return -EBUSY; | |
2390 | return cdi->ops->lock_door(cdi, arg); | |
2391 | } | |
2392 | ||
2393 | static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, | |
2394 | unsigned long arg) | |
2395 | { | |
2396 | cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis"); | |
2397 | ||
2398 | if (!capable(CAP_SYS_ADMIN)) | |
2399 | return -EACCES; | |
2400 | debug = arg ? 1 : 0; | |
2401 | return debug; | |
2402 | } | |
1da177e4 | 2403 | |
d2c5d4fc CH |
2404 | static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) |
2405 | { | |
2406 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); | |
2407 | return (cdi->ops->capability & ~cdi->mask); | |
2408 | } | |
2409 | ||
2410 | /* | |
2411 | * The following function is implemented, although very few audio | |
1da177e4 LT |
2412 | * discs give Universal Product Code information, which should just be |
2413 | * the Medium Catalog Number on the box. Note, that the way the code | |
2414 | * is written on the CD is /not/ uniform across all discs! | |
2415 | */ | |
d2c5d4fc CH |
2416 | static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, |
2417 | void __user *argp) | |
2418 | { | |
2419 | struct cdrom_mcn mcn; | |
2420 | int ret; | |
1da177e4 | 2421 | |
d2c5d4fc | 2422 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); |
1da177e4 | 2423 | |
d2c5d4fc CH |
2424 | if (!(cdi->ops->capability & CDC_MCN)) |
2425 | return -ENOSYS; | |
2426 | ret = cdi->ops->get_mcn(cdi, &mcn); | |
2427 | if (ret) | |
2428 | return ret; | |
1da177e4 | 2429 | |
d2c5d4fc CH |
2430 | if (copy_to_user(argp, &mcn, sizeof(mcn))) |
2431 | return -EFAULT; | |
2432 | cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); | |
2433 | return 0; | |
2434 | } | |
1da177e4 | 2435 | |
d2c5d4fc CH |
2436 | static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, |
2437 | unsigned long arg) | |
2438 | { | |
2439 | cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); | |
2440 | ||
2441 | if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) | |
2442 | return -ENOSYS; | |
2443 | if (!CDROM_CAN(CDC_SELECT_DISC) || | |
2444 | (arg == CDSL_CURRENT || arg == CDSL_NONE)) | |
2445 | return cdi->ops->drive_status(cdi, CDSL_CURRENT); | |
2446 | if (((int)arg >= cdi->capacity)) | |
2447 | return -EINVAL; | |
2448 | return cdrom_slot_status(cdi, arg); | |
2449 | } | |
2450 | ||
2451 | /* | |
2452 | * Ok, this is where problems start. The current interface for the | |
2453 | * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that | |
2454 | * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this | |
2455 | * is often the case, it is also very common for CDs to have some tracks | |
2456 | * with data, and some tracks with audio. Just because I feel like it, | |
2457 | * I declare the following to be the best way to cope. If the CD has ANY | |
2458 | * data tracks on it, it will be returned as a data CD. If it has any XA | |
2459 | * tracks, I will return it as that. Now I could simplify this interface | |
2460 | * by combining these returns with the above, but this more clearly | |
2461 | * demonstrates the problem with the current interface. Too bad this | |
2462 | * wasn't designed to use bitmasks... -Erik | |
2463 | * | |
2464 | * Well, now we have the option CDS_MIXED: a mixed-type CD. | |
2465 | * User level programmers might feel the ioctl is not very useful. | |
2466 | * ---david | |
2467 | */ | |
2468 | static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) | |
2469 | { | |
2470 | tracktype tracks; | |
2471 | ||
2472 | cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); | |
2473 | ||
2474 | cdrom_count_tracks(cdi, &tracks); | |
2475 | if (tracks.error) | |
2476 | return tracks.error; | |
2477 | ||
2478 | /* Policy mode on */ | |
2479 | if (tracks.audio > 0) { | |
2480 | if (!tracks.data && !tracks.cdi && !tracks.xa) | |
2481 | return CDS_AUDIO; | |
2482 | else | |
2483 | return CDS_MIXED; | |
1da177e4 LT |
2484 | } |
2485 | ||
d2c5d4fc CH |
2486 | if (tracks.cdi > 0) |
2487 | return CDS_XA_2_2; | |
2488 | if (tracks.xa > 0) | |
2489 | return CDS_XA_2_1; | |
2490 | if (tracks.data > 0) | |
2491 | return CDS_DATA_1; | |
2492 | /* Policy mode off */ | |
2493 | ||
2494 | cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n"); | |
2495 | return CDS_NO_INFO; | |
2496 | } | |
2497 | ||
2498 | static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) | |
2499 | { | |
2500 | cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); | |
2501 | return cdi->capacity; | |
2502 | } | |
2503 | ||
2504 | static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, | |
2505 | void __user *argp) | |
2506 | { | |
2507 | struct cdrom_subchnl q; | |
2508 | u8 requested, back; | |
2509 | int ret; | |
2510 | ||
2511 | /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ | |
2512 | ||
2513 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2514 | return -ENOSYS; | |
2515 | if (copy_from_user(&q, argp, sizeof(q))) | |
2516 | return -EFAULT; | |
2517 | ||
2518 | requested = q.cdsc_format; | |
2519 | if (requested != CDROM_MSF && requested != CDROM_LBA) | |
2520 | return -EINVAL; | |
2521 | q.cdsc_format = CDROM_MSF; | |
2522 | ||
2523 | ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); | |
2524 | if (ret) | |
2525 | return ret; | |
2526 | ||
2527 | back = q.cdsc_format; /* local copy */ | |
2528 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2529 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2530 | ||
2531 | if (copy_to_user(argp, &q, sizeof(q))) | |
2532 | return -EFAULT; | |
2533 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ | |
2534 | return 0; | |
2535 | } | |
2536 | ||
2537 | static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, | |
2538 | void __user *argp) | |
2539 | { | |
2540 | struct cdrom_tochdr header; | |
2541 | int ret; | |
2542 | ||
2543 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ | |
2544 | ||
2545 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2546 | return -ENOSYS; | |
2547 | if (copy_from_user(&header, argp, sizeof(header))) | |
2548 | return -EFAULT; | |
2549 | ||
2550 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); | |
2551 | if (ret) | |
2552 | return ret; | |
2553 | ||
2554 | if (copy_to_user(argp, &header, sizeof(header))) | |
2555 | return -EFAULT; | |
2556 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ | |
2557 | return 0; | |
2558 | } | |
2559 | ||
2560 | static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, | |
2561 | void __user *argp) | |
2562 | { | |
2563 | struct cdrom_tocentry entry; | |
2564 | u8 requested_format; | |
2565 | int ret; | |
2566 | ||
2567 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ | |
2568 | ||
2569 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2570 | return -ENOSYS; | |
2571 | if (copy_from_user(&entry, argp, sizeof(entry))) | |
2572 | return -EFAULT; | |
2573 | ||
2574 | requested_format = entry.cdte_format; | |
2575 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2576 | return -EINVAL; | |
2577 | /* make interface to low-level uniform */ | |
2578 | entry.cdte_format = CDROM_MSF; | |
2579 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry); | |
2580 | if (ret) | |
2581 | return ret; | |
2582 | sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); | |
2583 | ||
2584 | if (copy_to_user(argp, &entry, sizeof(entry))) | |
2585 | return -EFAULT; | |
2586 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ | |
2587 | return 0; | |
2588 | } | |
2589 | ||
2590 | static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, | |
2591 | void __user *argp) | |
2592 | { | |
2593 | struct cdrom_msf msf; | |
2594 | ||
2595 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); | |
2596 | ||
2597 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2598 | return -ENOSYS; | |
2599 | if (copy_from_user(&msf, argp, sizeof(msf))) | |
2600 | return -EFAULT; | |
2601 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); | |
2602 | } | |
2603 | ||
2604 | static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, | |
2605 | void __user *argp) | |
2606 | { | |
2607 | struct cdrom_ti ti; | |
2608 | int ret; | |
2609 | ||
2610 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); | |
2611 | ||
2612 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2613 | return -ENOSYS; | |
2614 | if (copy_from_user(&ti, argp, sizeof(ti))) | |
2615 | return -EFAULT; | |
2616 | ||
2617 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2618 | if (ret) | |
2619 | return ret; | |
2620 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); | |
2621 | } | |
2622 | static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, | |
2623 | void __user *argp) | |
2624 | { | |
2625 | struct cdrom_volctrl volume; | |
2626 | ||
2627 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); | |
2628 | ||
2629 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2630 | return -ENOSYS; | |
2631 | if (copy_from_user(&volume, argp, sizeof(volume))) | |
2632 | return -EFAULT; | |
2633 | return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); | |
2634 | } | |
2635 | ||
2636 | static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, | |
2637 | void __user *argp) | |
2638 | { | |
2639 | struct cdrom_volctrl volume; | |
2640 | int ret; | |
2641 | ||
2642 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); | |
2643 | ||
2644 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2645 | return -ENOSYS; | |
2646 | ||
2647 | ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); | |
2648 | if (ret) | |
2649 | return ret; | |
2650 | ||
2651 | if (copy_to_user(argp, &volume, sizeof(volume))) | |
2652 | return -EFAULT; | |
2653 | return 0; | |
2654 | } | |
2655 | ||
2656 | static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, | |
2657 | unsigned int cmd) | |
2658 | { | |
2659 | int ret; | |
2660 | ||
2661 | cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); | |
2662 | ||
2663 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2664 | return -ENOSYS; | |
2665 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2666 | if (ret) | |
2667 | return ret; | |
2668 | return cdi->ops->audio_ioctl(cdi, cmd, NULL); | |
2669 | } | |
2670 | ||
2671 | /* | |
2672 | * Just about every imaginable ioctl is supported in the Uniform layer | |
2673 | * these days. | |
2674 | * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). | |
2675 | */ | |
2676 | int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi, | |
2677 | struct inode *ip, unsigned int cmd, unsigned long arg) | |
2678 | { | |
2679 | void __user *argp = (void __user *)arg; | |
2680 | int ret; | |
45e79a3a | 2681 | struct gendisk *disk = ip->i_bdev->bd_disk; |
d2c5d4fc CH |
2682 | |
2683 | /* | |
2684 | * Try the generic SCSI command ioctl's first. | |
2685 | */ | |
45e79a3a | 2686 | ret = scsi_cmd_ioctl(file, disk->queue, disk, cmd, argp); |
d2c5d4fc CH |
2687 | if (ret != -ENOTTY) |
2688 | return ret; | |
2689 | ||
2690 | switch (cmd) { | |
2691 | case CDROMMULTISESSION: | |
2692 | return cdrom_ioctl_multisession(cdi, argp); | |
2693 | case CDROMEJECT: | |
2694 | return cdrom_ioctl_eject(cdi); | |
2695 | case CDROMCLOSETRAY: | |
2696 | return cdrom_ioctl_closetray(cdi); | |
2697 | case CDROMEJECT_SW: | |
2698 | return cdrom_ioctl_eject_sw(cdi, arg); | |
2699 | case CDROM_MEDIA_CHANGED: | |
2700 | return cdrom_ioctl_media_changed(cdi, arg); | |
2701 | case CDROM_SET_OPTIONS: | |
2702 | return cdrom_ioctl_set_options(cdi, arg); | |
2703 | case CDROM_CLEAR_OPTIONS: | |
2704 | return cdrom_ioctl_clear_options(cdi, arg); | |
2705 | case CDROM_SELECT_SPEED: | |
2706 | return cdrom_ioctl_select_speed(cdi, arg); | |
2707 | case CDROM_SELECT_DISC: | |
2708 | return cdrom_ioctl_select_disc(cdi, arg); | |
2709 | case CDROMRESET: | |
2710 | return cdrom_ioctl_reset(cdi, ip->i_bdev); | |
2711 | case CDROM_LOCKDOOR: | |
2712 | return cdrom_ioctl_lock_door(cdi, arg); | |
2713 | case CDROM_DEBUG: | |
2714 | return cdrom_ioctl_debug(cdi, arg); | |
2715 | case CDROM_GET_CAPABILITY: | |
2716 | return cdrom_ioctl_get_capability(cdi); | |
2717 | case CDROM_GET_MCN: | |
2718 | return cdrom_ioctl_get_mcn(cdi, argp); | |
2719 | case CDROM_DRIVE_STATUS: | |
2720 | return cdrom_ioctl_drive_status(cdi, arg); | |
2721 | case CDROM_DISC_STATUS: | |
2722 | return cdrom_ioctl_disc_status(cdi); | |
2723 | case CDROM_CHANGER_NSLOTS: | |
2724 | return cdrom_ioctl_changer_nslots(cdi); | |
2725 | } | |
2726 | ||
2727 | /* | |
2728 | * Use the ioctls that are implemented through the generic_packet() | |
2729 | * interface. this may look at bit funny, but if -ENOTTY is | |
2730 | * returned that particular ioctl is not implemented and we | |
2731 | * let it go through the device specific ones. | |
2732 | */ | |
1da177e4 LT |
2733 | if (CDROM_CAN(CDC_GENERIC_PACKET)) { |
2734 | ret = mmc_ioctl(cdi, cmd, arg); | |
d2c5d4fc | 2735 | if (ret != -ENOTTY) |
1da177e4 | 2736 | return ret; |
1da177e4 LT |
2737 | } |
2738 | ||
d2c5d4fc CH |
2739 | /* |
2740 | * Note: most of the cdinfo() calls are commented out here, | |
2741 | * because they fill up the sys log when CD players poll | |
2742 | * the drive. | |
2743 | */ | |
1da177e4 | 2744 | switch (cmd) { |
d2c5d4fc CH |
2745 | case CDROMSUBCHNL: |
2746 | return cdrom_ioctl_get_subchnl(cdi, argp); | |
2747 | case CDROMREADTOCHDR: | |
2748 | return cdrom_ioctl_read_tochdr(cdi, argp); | |
2749 | case CDROMREADTOCENTRY: | |
2750 | return cdrom_ioctl_read_tocentry(cdi, argp); | |
2751 | case CDROMPLAYMSF: | |
2752 | return cdrom_ioctl_play_msf(cdi, argp); | |
2753 | case CDROMPLAYTRKIND: | |
2754 | return cdrom_ioctl_play_trkind(cdi, argp); | |
2755 | case CDROMVOLCTRL: | |
2756 | return cdrom_ioctl_volctrl(cdi, argp); | |
2757 | case CDROMVOLREAD: | |
2758 | return cdrom_ioctl_volread(cdi, argp); | |
1da177e4 LT |
2759 | case CDROMSTART: |
2760 | case CDROMSTOP: | |
2761 | case CDROMPAUSE: | |
d2c5d4fc CH |
2762 | case CDROMRESUME: |
2763 | return cdrom_ioctl_audioctl(cdi, cmd); | |
2764 | } | |
1da177e4 | 2765 | |
1da177e4 LT |
2766 | return -ENOSYS; |
2767 | } | |
2768 | ||
1da177e4 LT |
2769 | /* |
2770 | * Required when we need to use READ_10 to issue other than 2048 block | |
2771 | * reads | |
2772 | */ | |
2773 | static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) | |
2774 | { | |
2775 | struct cdrom_device_ops *cdo = cdi->ops; | |
2776 | struct packet_command cgc; | |
2777 | struct modesel_head mh; | |
2778 | ||
2779 | memset(&mh, 0, sizeof(mh)); | |
2780 | mh.block_desc_length = 0x08; | |
2781 | mh.block_length_med = (size >> 8) & 0xff; | |
2782 | mh.block_length_lo = size & 0xff; | |
2783 | ||
2784 | memset(&cgc, 0, sizeof(cgc)); | |
2785 | cgc.cmd[0] = 0x15; | |
2786 | cgc.cmd[1] = 1 << 4; | |
2787 | cgc.cmd[4] = 12; | |
2788 | cgc.buflen = sizeof(mh); | |
2789 | cgc.buffer = (char *) &mh; | |
2790 | cgc.data_direction = CGC_DATA_WRITE; | |
2791 | mh.block_desc_length = 0x08; | |
2792 | mh.block_length_med = (size >> 8) & 0xff; | |
2793 | mh.block_length_lo = size & 0xff; | |
2794 | ||
2795 | return cdo->generic_packet(cdi, &cgc); | |
2796 | } | |
2797 | ||
2798 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
2799 | unsigned long arg) | |
2800 | { | |
2801 | struct cdrom_device_ops *cdo = cdi->ops; | |
2802 | struct packet_command cgc; | |
2803 | struct request_sense sense; | |
2804 | unsigned char buffer[32]; | |
2805 | int ret = 0; | |
2806 | ||
2807 | memset(&cgc, 0, sizeof(cgc)); | |
2808 | ||
2809 | /* build a unified command and queue it through | |
2810 | cdo->generic_packet() */ | |
2811 | switch (cmd) { | |
2812 | case CDROMREADRAW: | |
2813 | case CDROMREADMODE1: | |
2814 | case CDROMREADMODE2: { | |
2815 | struct cdrom_msf msf; | |
2816 | int blocksize = 0, format = 0, lba; | |
2817 | ||
2818 | switch (cmd) { | |
2819 | case CDROMREADRAW: | |
2820 | blocksize = CD_FRAMESIZE_RAW; | |
2821 | break; | |
2822 | case CDROMREADMODE1: | |
2823 | blocksize = CD_FRAMESIZE; | |
2824 | format = 2; | |
2825 | break; | |
2826 | case CDROMREADMODE2: | |
2827 | blocksize = CD_FRAMESIZE_RAW0; | |
2828 | break; | |
2829 | } | |
2830 | IOCTL_IN(arg, struct cdrom_msf, msf); | |
2831 | lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0); | |
2832 | /* FIXME: we need upper bound checking, too!! */ | |
2833 | if (lba < 0) | |
2834 | return -EINVAL; | |
5cbded58 | 2835 | cgc.buffer = kmalloc(blocksize, GFP_KERNEL); |
1da177e4 LT |
2836 | if (cgc.buffer == NULL) |
2837 | return -ENOMEM; | |
2838 | memset(&sense, 0, sizeof(sense)); | |
2839 | cgc.sense = &sense; | |
2840 | cgc.data_direction = CGC_DATA_READ; | |
2841 | ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize); | |
2842 | if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) { | |
2843 | /* | |
2844 | * SCSI-II devices are not required to support | |
2845 | * READ_CD, so let's try switching block size | |
2846 | */ | |
2847 | /* FIXME: switch back again... */ | |
2848 | if ((ret = cdrom_switch_blocksize(cdi, blocksize))) { | |
2849 | kfree(cgc.buffer); | |
2850 | return ret; | |
2851 | } | |
2852 | cgc.sense = NULL; | |
2853 | ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1); | |
2854 | ret |= cdrom_switch_blocksize(cdi, blocksize); | |
2855 | } | |
2856 | if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize)) | |
2857 | ret = -EFAULT; | |
2858 | kfree(cgc.buffer); | |
2859 | return ret; | |
2860 | } | |
2861 | case CDROMREADAUDIO: { | |
2862 | struct cdrom_read_audio ra; | |
2863 | int lba; | |
2864 | ||
2865 | IOCTL_IN(arg, struct cdrom_read_audio, ra); | |
2866 | ||
2867 | if (ra.addr_format == CDROM_MSF) | |
2868 | lba = msf_to_lba(ra.addr.msf.minute, | |
2869 | ra.addr.msf.second, | |
2870 | ra.addr.msf.frame); | |
2871 | else if (ra.addr_format == CDROM_LBA) | |
2872 | lba = ra.addr.lba; | |
2873 | else | |
2874 | return -EINVAL; | |
2875 | ||
2876 | /* FIXME: we need upper bound checking, too!! */ | |
2877 | if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) | |
2878 | return -EINVAL; | |
2879 | ||
2880 | return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); | |
2881 | } | |
2882 | case CDROMSUBCHNL: { | |
2883 | struct cdrom_subchnl q; | |
2884 | u_char requested, back; | |
2885 | IOCTL_IN(arg, struct cdrom_subchnl, q); | |
2886 | requested = q.cdsc_format; | |
2887 | if (!((requested == CDROM_MSF) || | |
2888 | (requested == CDROM_LBA))) | |
2889 | return -EINVAL; | |
2890 | q.cdsc_format = CDROM_MSF; | |
2891 | if ((ret = cdrom_read_subchannel(cdi, &q, 0))) | |
2892 | return ret; | |
2893 | back = q.cdsc_format; /* local copy */ | |
2894 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2895 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2896 | IOCTL_OUT(arg, struct cdrom_subchnl, q); | |
2897 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ | |
2898 | return 0; | |
2899 | } | |
2900 | case CDROMPLAYMSF: { | |
2901 | struct cdrom_msf msf; | |
2902 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); | |
2903 | IOCTL_IN(arg, struct cdrom_msf, msf); | |
2904 | cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
2905 | cgc.cmd[3] = msf.cdmsf_min0; | |
2906 | cgc.cmd[4] = msf.cdmsf_sec0; | |
2907 | cgc.cmd[5] = msf.cdmsf_frame0; | |
2908 | cgc.cmd[6] = msf.cdmsf_min1; | |
2909 | cgc.cmd[7] = msf.cdmsf_sec1; | |
2910 | cgc.cmd[8] = msf.cdmsf_frame1; | |
2911 | cgc.data_direction = CGC_DATA_NONE; | |
2912 | return cdo->generic_packet(cdi, &cgc); | |
2913 | } | |
2914 | case CDROMPLAYBLK: { | |
2915 | struct cdrom_blk blk; | |
2916 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); | |
2917 | IOCTL_IN(arg, struct cdrom_blk, blk); | |
2918 | cgc.cmd[0] = GPCMD_PLAY_AUDIO_10; | |
2919 | cgc.cmd[2] = (blk.from >> 24) & 0xff; | |
2920 | cgc.cmd[3] = (blk.from >> 16) & 0xff; | |
2921 | cgc.cmd[4] = (blk.from >> 8) & 0xff; | |
2922 | cgc.cmd[5] = blk.from & 0xff; | |
2923 | cgc.cmd[7] = (blk.len >> 8) & 0xff; | |
2924 | cgc.cmd[8] = blk.len & 0xff; | |
2925 | cgc.data_direction = CGC_DATA_NONE; | |
2926 | return cdo->generic_packet(cdi, &cgc); | |
2927 | } | |
2928 | case CDROMVOLCTRL: | |
2929 | case CDROMVOLREAD: { | |
2930 | struct cdrom_volctrl volctrl; | |
2931 | char mask[sizeof(buffer)]; | |
2932 | unsigned short offset; | |
2933 | ||
2934 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n"); | |
2935 | ||
2936 | IOCTL_IN(arg, struct cdrom_volctrl, volctrl); | |
2937 | ||
2938 | cgc.buffer = buffer; | |
2939 | cgc.buflen = 24; | |
2940 | if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0))) | |
2941 | return ret; | |
2942 | ||
2943 | /* originally the code depended on buffer[1] to determine | |
2944 | how much data is available for transfer. buffer[1] is | |
2945 | unfortunately ambigious and the only reliable way seem | |
2946 | to be to simply skip over the block descriptor... */ | |
56052d52 | 2947 | offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6)); |
1da177e4 LT |
2948 | |
2949 | if (offset + 16 > sizeof(buffer)) | |
2950 | return -E2BIG; | |
2951 | ||
2952 | if (offset + 16 > cgc.buflen) { | |
2953 | cgc.buflen = offset+16; | |
2954 | ret = cdrom_mode_sense(cdi, &cgc, | |
2955 | GPMODE_AUDIO_CTL_PAGE, 0); | |
2956 | if (ret) | |
2957 | return ret; | |
2958 | } | |
2959 | ||
2960 | /* sanity check */ | |
2961 | if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || | |
2962 | buffer[offset+1] < 14) | |
2963 | return -EINVAL; | |
2964 | ||
2965 | /* now we have the current volume settings. if it was only | |
2966 | a CDROMVOLREAD, return these values */ | |
2967 | if (cmd == CDROMVOLREAD) { | |
2968 | volctrl.channel0 = buffer[offset+9]; | |
2969 | volctrl.channel1 = buffer[offset+11]; | |
2970 | volctrl.channel2 = buffer[offset+13]; | |
2971 | volctrl.channel3 = buffer[offset+15]; | |
2972 | IOCTL_OUT(arg, struct cdrom_volctrl, volctrl); | |
2973 | return 0; | |
2974 | } | |
2975 | ||
2976 | /* get the volume mask */ | |
2977 | cgc.buffer = mask; | |
2978 | if ((ret = cdrom_mode_sense(cdi, &cgc, | |
2979 | GPMODE_AUDIO_CTL_PAGE, 1))) | |
2980 | return ret; | |
2981 | ||
2982 | buffer[offset+9] = volctrl.channel0 & mask[offset+9]; | |
2983 | buffer[offset+11] = volctrl.channel1 & mask[offset+11]; | |
2984 | buffer[offset+13] = volctrl.channel2 & mask[offset+13]; | |
2985 | buffer[offset+15] = volctrl.channel3 & mask[offset+15]; | |
2986 | ||
2987 | /* set volume */ | |
2988 | cgc.buffer = buffer + offset - 8; | |
2989 | memset(cgc.buffer, 0, 8); | |
2990 | return cdrom_mode_select(cdi, &cgc); | |
2991 | } | |
2992 | ||
2993 | case CDROMSTART: | |
2994 | case CDROMSTOP: { | |
2995 | cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); | |
2996 | cgc.cmd[0] = GPCMD_START_STOP_UNIT; | |
2997 | cgc.cmd[1] = 1; | |
2998 | cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0; | |
2999 | cgc.data_direction = CGC_DATA_NONE; | |
3000 | return cdo->generic_packet(cdi, &cgc); | |
3001 | } | |
3002 | ||
3003 | case CDROMPAUSE: | |
3004 | case CDROMRESUME: { | |
3005 | cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); | |
3006 | cgc.cmd[0] = GPCMD_PAUSE_RESUME; | |
3007 | cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; | |
3008 | cgc.data_direction = CGC_DATA_NONE; | |
3009 | return cdo->generic_packet(cdi, &cgc); | |
3010 | } | |
3011 | ||
3012 | case DVD_READ_STRUCT: { | |
3013 | dvd_struct *s; | |
3014 | int size = sizeof(dvd_struct); | |
3015 | if (!CDROM_CAN(CDC_DVD)) | |
3016 | return -ENOSYS; | |
5cbded58 | 3017 | if ((s = kmalloc(size, GFP_KERNEL)) == NULL) |
1da177e4 LT |
3018 | return -ENOMEM; |
3019 | cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); | |
3020 | if (copy_from_user(s, (dvd_struct __user *)arg, size)) { | |
3021 | kfree(s); | |
3022 | return -EFAULT; | |
3023 | } | |
3024 | if ((ret = dvd_read_struct(cdi, s))) { | |
3025 | kfree(s); | |
3026 | return ret; | |
3027 | } | |
3028 | if (copy_to_user((dvd_struct __user *)arg, s, size)) | |
3029 | ret = -EFAULT; | |
3030 | kfree(s); | |
3031 | return ret; | |
3032 | } | |
3033 | ||
3034 | case DVD_AUTH: { | |
3035 | dvd_authinfo ai; | |
3036 | if (!CDROM_CAN(CDC_DVD)) | |
3037 | return -ENOSYS; | |
3038 | cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n"); | |
3039 | IOCTL_IN(arg, dvd_authinfo, ai); | |
3040 | if ((ret = dvd_do_auth (cdi, &ai))) | |
3041 | return ret; | |
3042 | IOCTL_OUT(arg, dvd_authinfo, ai); | |
3043 | return 0; | |
3044 | } | |
3045 | ||
3046 | case CDROM_NEXT_WRITABLE: { | |
3047 | long next = 0; | |
3048 | cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); | |
3049 | if ((ret = cdrom_get_next_writable(cdi, &next))) | |
3050 | return ret; | |
3051 | IOCTL_OUT(arg, long, next); | |
3052 | return 0; | |
3053 | } | |
3054 | case CDROM_LAST_WRITTEN: { | |
3055 | long last = 0; | |
3056 | cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); | |
3057 | if ((ret = cdrom_get_last_written(cdi, &last))) | |
3058 | return ret; | |
3059 | IOCTL_OUT(arg, long, last); | |
3060 | return 0; | |
3061 | } | |
3062 | } /* switch */ | |
3063 | ||
3064 | return -ENOTTY; | |
3065 | } | |
3066 | ||
3067 | static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type, | |
3068 | track_information *ti) | |
3069 | { | |
3070 | struct cdrom_device_ops *cdo = cdi->ops; | |
3071 | struct packet_command cgc; | |
3072 | int ret, buflen; | |
3073 | ||
3074 | init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); | |
3075 | cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; | |
3076 | cgc.cmd[1] = type & 3; | |
3077 | cgc.cmd[4] = (track & 0xff00) >> 8; | |
3078 | cgc.cmd[5] = track & 0xff; | |
3079 | cgc.cmd[8] = 8; | |
3080 | cgc.quiet = 1; | |
3081 | ||
3082 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3083 | return ret; | |
3084 | ||
3085 | buflen = be16_to_cpu(ti->track_information_length) + | |
3086 | sizeof(ti->track_information_length); | |
3087 | ||
3088 | if (buflen > sizeof(track_information)) | |
3089 | buflen = sizeof(track_information); | |
3090 | ||
3091 | cgc.cmd[8] = cgc.buflen = buflen; | |
3092 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3093 | return ret; | |
3094 | ||
3095 | /* return actual fill size */ | |
3096 | return buflen; | |
3097 | } | |
3098 | ||
3099 | /* requires CD R/RW */ | |
3100 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di) | |
3101 | { | |
3102 | struct cdrom_device_ops *cdo = cdi->ops; | |
3103 | struct packet_command cgc; | |
3104 | int ret, buflen; | |
3105 | ||
3106 | /* set up command and get the disc info */ | |
3107 | init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); | |
3108 | cgc.cmd[0] = GPCMD_READ_DISC_INFO; | |
3109 | cgc.cmd[8] = cgc.buflen = 2; | |
3110 | cgc.quiet = 1; | |
3111 | ||
3112 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3113 | return ret; | |
3114 | ||
3115 | /* not all drives have the same disc_info length, so requeue | |
3116 | * packet with the length the drive tells us it can supply | |
3117 | */ | |
3118 | buflen = be16_to_cpu(di->disc_information_length) + | |
3119 | sizeof(di->disc_information_length); | |
3120 | ||
3121 | if (buflen > sizeof(disc_information)) | |
3122 | buflen = sizeof(disc_information); | |
3123 | ||
3124 | cgc.cmd[8] = cgc.buflen = buflen; | |
3125 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3126 | return ret; | |
3127 | ||
3128 | /* return actual fill size */ | |
3129 | return buflen; | |
3130 | } | |
3131 | ||
3132 | /* return the last written block on the CD-R media. this is for the udf | |
3133 | file system. */ | |
3134 | int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) | |
3135 | { | |
3136 | struct cdrom_tocentry toc; | |
3137 | disc_information di; | |
3138 | track_information ti; | |
3139 | __u32 last_track; | |
3140 | int ret = -1, ti_size; | |
3141 | ||
3142 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3143 | goto use_toc; | |
3144 | ||
3145 | ret = cdrom_get_disc_info(cdi, &di); | |
3146 | if (ret < (int)(offsetof(typeof(di), last_track_lsb) | |
3147 | + sizeof(di.last_track_lsb))) | |
3148 | goto use_toc; | |
3149 | ||
3150 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3151 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3152 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3153 | if (ti_size < (int)offsetof(typeof(ti), track_start)) | |
3154 | goto use_toc; | |
3155 | ||
3156 | /* if this track is blank, try the previous. */ | |
3157 | if (ti.blank) { | |
3158 | if (last_track==1) | |
3159 | goto use_toc; | |
3160 | last_track--; | |
3161 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3162 | } | |
3163 | ||
3164 | if (ti_size < (int)(offsetof(typeof(ti), track_size) | |
3165 | + sizeof(ti.track_size))) | |
3166 | goto use_toc; | |
3167 | ||
3168 | /* if last recorded field is valid, return it. */ | |
3169 | if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) | |
3170 | + sizeof(ti.last_rec_address))) { | |
3171 | *last_written = be32_to_cpu(ti.last_rec_address); | |
3172 | } else { | |
3173 | /* make it up instead */ | |
3174 | *last_written = be32_to_cpu(ti.track_start) + | |
3175 | be32_to_cpu(ti.track_size); | |
3176 | if (ti.free_blocks) | |
3177 | *last_written -= (be32_to_cpu(ti.free_blocks) + 7); | |
3178 | } | |
3179 | return 0; | |
3180 | ||
3181 | /* this is where we end up if the drive either can't do a | |
3182 | GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if | |
3183 | it doesn't give enough information or fails. then we return | |
3184 | the toc contents. */ | |
3185 | use_toc: | |
3186 | toc.cdte_format = CDROM_MSF; | |
3187 | toc.cdte_track = CDROM_LEADOUT; | |
3188 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) | |
3189 | return ret; | |
3190 | sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); | |
3191 | *last_written = toc.cdte_addr.lba; | |
3192 | return 0; | |
3193 | } | |
3194 | ||
3195 | /* return the next writable block. also for udf file system. */ | |
3196 | static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable) | |
3197 | { | |
3198 | disc_information di; | |
3199 | track_information ti; | |
3200 | __u16 last_track; | |
3201 | int ret, ti_size; | |
3202 | ||
3203 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3204 | goto use_last_written; | |
3205 | ||
3206 | ret = cdrom_get_disc_info(cdi, &di); | |
3207 | if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) | |
3208 | + sizeof(di.last_track_lsb)) | |
3209 | goto use_last_written; | |
3210 | ||
3211 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3212 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3213 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3214 | if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) | |
3215 | goto use_last_written; | |
3216 | ||
3217 | /* if this track is blank, try the previous. */ | |
3218 | if (ti.blank) { | |
3219 | if (last_track == 1) | |
3220 | goto use_last_written; | |
3221 | last_track--; | |
3222 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3223 | if (ti_size < 0) | |
3224 | goto use_last_written; | |
3225 | } | |
3226 | ||
3227 | /* if next recordable address field is valid, use it. */ | |
3228 | if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) | |
3229 | + sizeof(ti.next_writable)) { | |
3230 | *next_writable = be32_to_cpu(ti.next_writable); | |
3231 | return 0; | |
3232 | } | |
3233 | ||
3234 | use_last_written: | |
3235 | if ((ret = cdrom_get_last_written(cdi, next_writable))) { | |
3236 | *next_writable = 0; | |
3237 | return ret; | |
3238 | } else { | |
3239 | *next_writable += 7; | |
3240 | return 0; | |
3241 | } | |
3242 | } | |
3243 | ||
3244 | EXPORT_SYMBOL(cdrom_get_last_written); | |
3245 | EXPORT_SYMBOL(register_cdrom); | |
3246 | EXPORT_SYMBOL(unregister_cdrom); | |
3247 | EXPORT_SYMBOL(cdrom_open); | |
3248 | EXPORT_SYMBOL(cdrom_release); | |
3249 | EXPORT_SYMBOL(cdrom_ioctl); | |
3250 | EXPORT_SYMBOL(cdrom_media_changed); | |
3251 | EXPORT_SYMBOL(cdrom_number_of_slots); | |
3252 | EXPORT_SYMBOL(cdrom_mode_select); | |
3253 | EXPORT_SYMBOL(cdrom_mode_sense); | |
3254 | EXPORT_SYMBOL(init_cdrom_command); | |
3255 | EXPORT_SYMBOL(cdrom_get_media_event); | |
3256 | ||
3257 | #ifdef CONFIG_SYSCTL | |
3258 | ||
3259 | #define CDROM_STR_SIZE 1000 | |
3260 | ||
3261 | static struct cdrom_sysctl_settings { | |
3262 | char info[CDROM_STR_SIZE]; /* general info */ | |
3263 | int autoclose; /* close tray upon mount, etc */ | |
3264 | int autoeject; /* eject on umount */ | |
3265 | int debug; /* turn on debugging messages */ | |
3266 | int lock; /* lock the door on device open */ | |
3267 | int check; /* check media type */ | |
3268 | } cdrom_sysctl_settings; | |
3269 | ||
554988d6 DY |
3270 | enum cdrom_print_option { |
3271 | CTL_NAME, | |
3272 | CTL_SPEED, | |
3273 | CTL_SLOTS, | |
3274 | CTL_CAPABILITY | |
3275 | }; | |
3276 | ||
3277 | static int cdrom_print_info(const char *header, int val, char *info, | |
3278 | int *pos, enum cdrom_print_option option) | |
3279 | { | |
3280 | const int max_size = sizeof(cdrom_sysctl_settings.info); | |
3281 | struct cdrom_device_info *cdi; | |
3282 | int ret; | |
3283 | ||
3284 | ret = scnprintf(info + *pos, max_size - *pos, header); | |
3285 | if (!ret) | |
3286 | return 1; | |
3287 | ||
3288 | *pos += ret; | |
3289 | ||
7fd097d4 | 3290 | list_for_each_entry(cdi, &cdrom_list, list) { |
554988d6 DY |
3291 | switch (option) { |
3292 | case CTL_NAME: | |
3293 | ret = scnprintf(info + *pos, max_size - *pos, | |
3294 | "\t%s", cdi->name); | |
3295 | break; | |
3296 | case CTL_SPEED: | |
3297 | ret = scnprintf(info + *pos, max_size - *pos, | |
3298 | "\t%d", cdi->speed); | |
3299 | break; | |
3300 | case CTL_SLOTS: | |
3301 | ret = scnprintf(info + *pos, max_size - *pos, | |
3302 | "\t%d", cdi->capacity); | |
3303 | break; | |
3304 | case CTL_CAPABILITY: | |
3305 | ret = scnprintf(info + *pos, max_size - *pos, | |
3306 | "\t%d", CDROM_CAN(val) != 0); | |
3307 | break; | |
3308 | default: | |
3309 | printk(KERN_INFO "cdrom: invalid option%d\n", option); | |
3310 | return 1; | |
3311 | } | |
3312 | if (!ret) | |
3313 | return 1; | |
3314 | *pos += ret; | |
3315 | } | |
3316 | ||
3317 | return 0; | |
3318 | } | |
3319 | ||
1da177e4 LT |
3320 | static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp, |
3321 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
3322 | { | |
554988d6 | 3323 | int pos; |
1da177e4 | 3324 | char *info = cdrom_sysctl_settings.info; |
554988d6 | 3325 | const int max_size = sizeof(cdrom_sysctl_settings.info); |
1da177e4 LT |
3326 | |
3327 | if (!*lenp || (*ppos && !write)) { | |
3328 | *lenp = 0; | |
3329 | return 0; | |
3330 | } | |
3331 | ||
554988d6 DY |
3332 | mutex_lock(&cdrom_mutex); |
3333 | ||
1da177e4 LT |
3334 | pos = sprintf(info, "CD-ROM information, " VERSION "\n"); |
3335 | ||
554988d6 DY |
3336 | if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) |
3337 | goto done; | |
3338 | if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) | |
3339 | goto done; | |
3340 | if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) | |
3341 | goto done; | |
3342 | if (cdrom_print_info("\nCan close tray:\t", | |
3343 | CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) | |
3344 | goto done; | |
3345 | if (cdrom_print_info("\nCan open tray:\t", | |
3346 | CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) | |
3347 | goto done; | |
3348 | if (cdrom_print_info("\nCan lock tray:\t", | |
3349 | CDC_LOCK, info, &pos, CTL_CAPABILITY)) | |
3350 | goto done; | |
3351 | if (cdrom_print_info("\nCan change speed:", | |
3352 | CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) | |
3353 | goto done; | |
3354 | if (cdrom_print_info("\nCan select disk:", | |
3355 | CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) | |
3356 | goto done; | |
3357 | if (cdrom_print_info("\nCan read multisession:", | |
3358 | CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) | |
3359 | goto done; | |
3360 | if (cdrom_print_info("\nCan read MCN:\t", | |
3361 | CDC_MCN, info, &pos, CTL_CAPABILITY)) | |
3362 | goto done; | |
3363 | if (cdrom_print_info("\nReports media changed:", | |
3364 | CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) | |
3365 | goto done; | |
3366 | if (cdrom_print_info("\nCan play audio:\t", | |
3367 | CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) | |
3368 | goto done; | |
3369 | if (cdrom_print_info("\nCan write CD-R:\t", | |
3370 | CDC_CD_R, info, &pos, CTL_CAPABILITY)) | |
3371 | goto done; | |
3372 | if (cdrom_print_info("\nCan write CD-RW:", | |
3373 | CDC_CD_RW, info, &pos, CTL_CAPABILITY)) | |
3374 | goto done; | |
3375 | if (cdrom_print_info("\nCan read DVD:\t", | |
3376 | CDC_DVD, info, &pos, CTL_CAPABILITY)) | |
3377 | goto done; | |
3378 | if (cdrom_print_info("\nCan write DVD-R:", | |
3379 | CDC_DVD_R, info, &pos, CTL_CAPABILITY)) | |
3380 | goto done; | |
3381 | if (cdrom_print_info("\nCan write DVD-RAM:", | |
3382 | CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) | |
3383 | goto done; | |
3384 | if (cdrom_print_info("\nCan read MRW:\t", | |
3385 | CDC_MRW, info, &pos, CTL_CAPABILITY)) | |
3386 | goto done; | |
3387 | if (cdrom_print_info("\nCan write MRW:\t", | |
3388 | CDC_MRW_W, info, &pos, CTL_CAPABILITY)) | |
3389 | goto done; | |
3390 | if (cdrom_print_info("\nCan write RAM:\t", | |
3391 | CDC_RAM, info, &pos, CTL_CAPABILITY)) | |
3392 | goto done; | |
3393 | if (!scnprintf(info + pos, max_size - pos, "\n\n")) | |
3394 | goto done; | |
3395 | doit: | |
3396 | mutex_unlock(&cdrom_mutex); | |
3397 | return proc_dostring(ctl, write, filp, buffer, lenp, ppos); | |
3398 | done: | |
3399 | printk(KERN_INFO "cdrom: info buffer too small\n"); | |
3400 | goto doit; | |
1da177e4 LT |
3401 | } |
3402 | ||
3403 | /* Unfortunately, per device settings are not implemented through | |
3404 | procfs/sysctl yet. When they are, this will naturally disappear. For now | |
3405 | just update all drives. Later this will become the template on which | |
3406 | new registered drives will be based. */ | |
3407 | static void cdrom_update_settings(void) | |
3408 | { | |
3409 | struct cdrom_device_info *cdi; | |
3410 | ||
032d8d90 | 3411 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 3412 | list_for_each_entry(cdi, &cdrom_list, list) { |
1da177e4 LT |
3413 | if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) |
3414 | cdi->options |= CDO_AUTO_CLOSE; | |
3415 | else if (!autoclose) | |
3416 | cdi->options &= ~CDO_AUTO_CLOSE; | |
3417 | if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) | |
3418 | cdi->options |= CDO_AUTO_EJECT; | |
3419 | else if (!autoeject) | |
3420 | cdi->options &= ~CDO_AUTO_EJECT; | |
3421 | if (lockdoor && CDROM_CAN(CDC_LOCK)) | |
3422 | cdi->options |= CDO_LOCK; | |
3423 | else if (!lockdoor) | |
3424 | cdi->options &= ~CDO_LOCK; | |
3425 | if (check_media_type) | |
3426 | cdi->options |= CDO_CHECK_TYPE; | |
3427 | else | |
3428 | cdi->options &= ~CDO_CHECK_TYPE; | |
3429 | } | |
032d8d90 | 3430 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
3431 | } |
3432 | ||
3433 | static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp, | |
3434 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
3435 | { | |
1da177e4 LT |
3436 | int ret; |
3437 | ||
3438 | ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos); | |
3439 | ||
06489b4e | 3440 | if (write) { |
1da177e4 LT |
3441 | |
3442 | /* we only care for 1 or 0. */ | |
06489b4e EB |
3443 | autoclose = !!cdrom_sysctl_settings.autoclose; |
3444 | autoeject = !!cdrom_sysctl_settings.autoeject; | |
3445 | debug = !!cdrom_sysctl_settings.debug; | |
3446 | lockdoor = !!cdrom_sysctl_settings.lock; | |
3447 | check_media_type = !!cdrom_sysctl_settings.check; | |
1da177e4 | 3448 | |
1da177e4 LT |
3449 | /* update the option flags according to the changes. we |
3450 | don't have per device options through sysctl yet, | |
3451 | but we will have and then this will disappear. */ | |
3452 | cdrom_update_settings(); | |
3453 | } | |
3454 | ||
3455 | return ret; | |
3456 | } | |
3457 | ||
3458 | /* Place files in /proc/sys/dev/cdrom */ | |
3459 | static ctl_table cdrom_table[] = { | |
3460 | { | |
1da177e4 LT |
3461 | .procname = "info", |
3462 | .data = &cdrom_sysctl_settings.info, | |
3463 | .maxlen = CDROM_STR_SIZE, | |
3464 | .mode = 0444, | |
3465 | .proc_handler = &cdrom_sysctl_info, | |
3466 | }, | |
3467 | { | |
1da177e4 LT |
3468 | .procname = "autoclose", |
3469 | .data = &cdrom_sysctl_settings.autoclose, | |
3470 | .maxlen = sizeof(int), | |
3471 | .mode = 0644, | |
3472 | .proc_handler = &cdrom_sysctl_handler, | |
3473 | }, | |
3474 | { | |
1da177e4 LT |
3475 | .procname = "autoeject", |
3476 | .data = &cdrom_sysctl_settings.autoeject, | |
3477 | .maxlen = sizeof(int), | |
3478 | .mode = 0644, | |
3479 | .proc_handler = &cdrom_sysctl_handler, | |
3480 | }, | |
3481 | { | |
1da177e4 LT |
3482 | .procname = "debug", |
3483 | .data = &cdrom_sysctl_settings.debug, | |
3484 | .maxlen = sizeof(int), | |
3485 | .mode = 0644, | |
3486 | .proc_handler = &cdrom_sysctl_handler, | |
3487 | }, | |
3488 | { | |
1da177e4 LT |
3489 | .procname = "lock", |
3490 | .data = &cdrom_sysctl_settings.lock, | |
3491 | .maxlen = sizeof(int), | |
3492 | .mode = 0644, | |
3493 | .proc_handler = &cdrom_sysctl_handler, | |
3494 | }, | |
3495 | { | |
1da177e4 LT |
3496 | .procname = "check_media", |
3497 | .data = &cdrom_sysctl_settings.check, | |
3498 | .maxlen = sizeof(int), | |
3499 | .mode = 0644, | |
3500 | .proc_handler = &cdrom_sysctl_handler | |
3501 | }, | |
3502 | { .ctl_name = 0 } | |
3503 | }; | |
3504 | ||
3505 | static ctl_table cdrom_cdrom_table[] = { | |
3506 | { | |
3507 | .ctl_name = DEV_CDROM, | |
3508 | .procname = "cdrom", | |
3509 | .maxlen = 0, | |
3510 | .mode = 0555, | |
3511 | .child = cdrom_table, | |
3512 | }, | |
3513 | { .ctl_name = 0 } | |
3514 | }; | |
3515 | ||
3516 | /* Make sure that /proc/sys/dev is there */ | |
3517 | static ctl_table cdrom_root_table[] = { | |
3518 | { | |
3519 | .ctl_name = CTL_DEV, | |
3520 | .procname = "dev", | |
3521 | .maxlen = 0, | |
3522 | .mode = 0555, | |
3523 | .child = cdrom_cdrom_table, | |
3524 | }, | |
3525 | { .ctl_name = 0 } | |
3526 | }; | |
3527 | static struct ctl_table_header *cdrom_sysctl_header; | |
3528 | ||
3529 | static void cdrom_sysctl_register(void) | |
3530 | { | |
3531 | static int initialized; | |
3532 | ||
3533 | if (initialized == 1) | |
3534 | return; | |
3535 | ||
0b4d4147 | 3536 | cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); |
1da177e4 LT |
3537 | |
3538 | /* set the defaults */ | |
3539 | cdrom_sysctl_settings.autoclose = autoclose; | |
3540 | cdrom_sysctl_settings.autoeject = autoeject; | |
3541 | cdrom_sysctl_settings.debug = debug; | |
3542 | cdrom_sysctl_settings.lock = lockdoor; | |
3543 | cdrom_sysctl_settings.check = check_media_type; | |
3544 | ||
3545 | initialized = 1; | |
3546 | } | |
3547 | ||
3548 | static void cdrom_sysctl_unregister(void) | |
3549 | { | |
3550 | if (cdrom_sysctl_header) | |
3551 | unregister_sysctl_table(cdrom_sysctl_header); | |
3552 | } | |
3553 | ||
17672cf0 AM |
3554 | #else /* CONFIG_SYSCTL */ |
3555 | ||
3556 | static void cdrom_sysctl_register(void) | |
3557 | { | |
3558 | } | |
3559 | ||
3560 | static void cdrom_sysctl_unregister(void) | |
3561 | { | |
3562 | } | |
3563 | ||
1da177e4 LT |
3564 | #endif /* CONFIG_SYSCTL */ |
3565 | ||
3566 | static int __init cdrom_init(void) | |
3567 | { | |
1da177e4 | 3568 | cdrom_sysctl_register(); |
17672cf0 | 3569 | |
1da177e4 LT |
3570 | return 0; |
3571 | } | |
3572 | ||
3573 | static void __exit cdrom_exit(void) | |
3574 | { | |
3575 | printk(KERN_INFO "Uniform CD-ROM driver unloaded\n"); | |
1da177e4 | 3576 | cdrom_sysctl_unregister(); |
1da177e4 LT |
3577 | } |
3578 | ||
3579 | module_init(cdrom_init); | |
3580 | module_exit(cdrom_exit); | |
3581 | MODULE_LICENSE("GPL"); |