mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
3716 lines
98 KiB
3716 lines
98 KiB
/* linux/drivers/cdrom/cdrom.c |
|
Copyright (c) 1996, 1997 David A. van Leeuwen. |
|
Copyright (c) 1997, 1998 Erik Andersen <[email protected]> |
|
Copyright (c) 1998, 1999 Jens Axboe <[email protected]> |
|
|
|
May be copied or modified under the terms of the GNU General Public |
|
License. See linux/COPYING for more information. |
|
|
|
Uniform CD-ROM driver for Linux. |
|
See Documentation/cdrom/cdrom-standard.rst for usage information. |
|
|
|
The routines in the file provide a uniform interface between the |
|
software that uses CD-ROMs and the various low-level drivers that |
|
actually talk to the hardware. Suggestions are welcome. |
|
Patches that work are more welcome though. ;-) |
|
|
|
To Do List: |
|
---------------------------------- |
|
|
|
-- Modify sysctl/proc interface. I plan on having one directory per |
|
drive, with entries for outputing general drive information, and sysctl |
|
based tunable parameters such as whether the tray should auto-close for |
|
that drive. Suggestions (or patches) for this welcome! |
|
|
|
|
|
Revision History |
|
---------------------------------- |
|
1.00 Date Unknown -- David van Leeuwen <[email protected]> |
|
-- Initial version by David A. van Leeuwen. I don't have a detailed |
|
changelog for the 1.x series, David? |
|
|
|
2.00 Dec 2, 1997 -- Erik Andersen <[email protected]> |
|
-- New maintainer! As David A. van Leeuwen has been too busy to actively |
|
maintain and improve this driver, I am now carrying on the torch. If |
|
you have a problem with this driver, please feel free to contact me. |
|
|
|
-- Added (rudimentary) sysctl interface. I realize this is really weak |
|
right now, and is _very_ badly implemented. It will be improved... |
|
|
|
-- Modified CDROM_DISC_STATUS so that it is now incorporated into |
|
the Uniform CD-ROM driver via the cdrom_count_tracks function. |
|
The cdrom_count_tracks function helps resolve some of the false |
|
assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check |
|
for the correct media type when mounting or playing audio from a CD. |
|
|
|
-- Remove the calls to verify_area and only use the copy_from_user and |
|
copy_to_user stuff, since these calls now provide their own memory |
|
checking with the 2.1.x kernels. |
|
|
|
-- Major update to return codes so that errors from low-level drivers |
|
are passed on through (thanks to Gerd Knorr for pointing out this |
|
problem). |
|
|
|
-- Made it so if a function isn't implemented in a low-level driver, |
|
ENOSYS is now returned instead of EINVAL. |
|
|
|
-- Simplified some complex logic so that the source code is easier to read. |
|
|
|
-- Other stuff I probably forgot to mention (lots of changes). |
|
|
|
2.01 to 2.11 Dec 1997-Jan 1998 |
|
-- TO-DO! Write changelogs for 2.01 to 2.12. |
|
|
|
2.12 Jan 24, 1998 -- Erik Andersen <[email protected]> |
|
-- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that |
|
copy_*_user does not return EFAULT on error, but instead returns the number |
|
of bytes not copied. I was returning whatever non-zero stuff came back from |
|
the copy_*_user functions directly, which would result in strange errors. |
|
|
|
2.13 July 17, 1998 -- Erik Andersen <[email protected]> |
|
-- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed |
|
of the drive. Thanks to Tobias Ringstr|m <[email protected]> for pointing |
|
this out and providing a simple fix. |
|
-- Fixed the procfs-unload-module bug with the fill_inode procfs callback. |
|
thanks to Andrea Arcangeli |
|
-- Fixed it so that the /proc entry now also shows up when cdrom is |
|
compiled into the kernel. Before it only worked when loaded as a module. |
|
|
|
2.14 August 17, 1998 -- Erik Andersen <[email protected]> |
|
-- Fixed a bug in cdrom_media_changed and handling of reporting that |
|
the media had changed for devices that _don't_ implement media_changed. |
|
Thanks to Grant R. Guenther <[email protected]> for spotting this bug. |
|
-- Made a few things more pedanticly correct. |
|
|
|
2.50 Oct 19, 1998 - Jens Axboe <[email protected]> |
|
-- New maintainers! Erik was too busy to continue the work on the driver, |
|
so now Chris Zwilling <[email protected]> and Jens Axboe <[email protected]> |
|
will do their best to follow in his footsteps |
|
|
|
2.51 Dec 20, 1998 - Jens Axboe <[email protected]> |
|
-- Check if drive is capable of doing what we ask before blindly changing |
|
cdi->options in various ioctl. |
|
-- Added version to proc entry. |
|
|
|
2.52 Jan 16, 1999 - Jens Axboe <[email protected]> |
|
-- Fixed an error in open_for_data where we would sometimes not return |
|
the correct error value. Thanks Huba Gaspar <[email protected]>. |
|
-- Fixed module usage count - usage was based on /proc/sys/dev |
|
instead of /proc/sys/dev/cdrom. This could lead to an oops when other |
|
modules had entries in dev. Feb 02 - real bug was in sysctl.c where |
|
dev would be removed even though it was used. cdrom.c just illuminated |
|
that bug. |
|
|
|
2.53 Feb 22, 1999 - Jens Axboe <[email protected]> |
|
-- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has |
|
been "rewritten" because capabilities and options aren't in sync. They |
|
should be... |
|
-- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way. |
|
-- Added CDROM_RESET ioctl. |
|
-- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly. |
|
-- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs |
|
from parsing /proc/sys/dev/cdrom/info. |
|
|
|
2.54 Mar 15, 1999 - Jens Axboe <[email protected]> |
|
-- Check capability mask from low level driver when counting tracks as |
|
per suggestion from Corey J. Scotts <[email protected]>. |
|
|
|
2.55 Apr 25, 1999 - Jens Axboe <[email protected]> |
|
-- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of |
|
CDC_CLOSE_TRAY. |
|
-- proc info didn't mask against capabilities mask. |
|
|
|
3.00 Aug 5, 1999 - Jens Axboe <[email protected]> |
|
-- Unified audio ioctl handling across CD-ROM drivers. A lot of the |
|
code was duplicated before. Drives that support the generic packet |
|
interface are now being fed packets from here instead. |
|
-- First attempt at adding support for MMC2 commands - for DVD and |
|
CD-R(W) drives. Only the DVD parts are in now - the interface used is |
|
the same as for the audio ioctls. |
|
-- ioctl cleanups. if a drive couldn't play audio, it didn't get |
|
a change to perform device specific ioctls as well. |
|
-- Defined CDROM_CAN(CDC_XXX) for checking the capabilities. |
|
-- Put in sysctl files for autoclose, autoeject, check_media, debug, |
|
and lock. |
|
-- /proc/sys/dev/cdrom/info has been updated to also contain info about |
|
CD-Rx and DVD capabilities. |
|
-- Now default to checking media type. |
|
-- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for |
|
doing this anyway, with the generic_packet addition. |
|
|
|
3.01 Aug 6, 1999 - Jens Axboe <[email protected]> |
|
-- Fix up the sysctl handling so that the option flags get set |
|
correctly. |
|
-- Fix up ioctl handling so the device specific ones actually get |
|
called :). |
|
|
|
3.02 Aug 8, 1999 - Jens Axboe <[email protected]> |
|
-- Fixed volume control on SCSI drives (or others with longer audio |
|
page). |
|
-- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath |
|
<[email protected]> for telling me and for having defined the various |
|
DVD structures and ioctls in the first place! He designed the original |
|
DVD patches for ide-cd and while I rearranged and unified them, the |
|
interface is still the same. |
|
|
|
3.03 Sep 1, 1999 - Jens Axboe <[email protected]> |
|
-- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only |
|
CDROMREADTOCENTRY and CDROMREADTOCHDR are left. |
|
-- Moved the CDROMREADxxx ioctls in here. |
|
-- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls |
|
and exported functions. |
|
-- Erik Andersen <[email protected]> modified all SCMD_ commands |
|
to now read GPCMD_ for the new generic packet interface. All low level |
|
drivers are updated as well. |
|
-- Various other cleanups. |
|
|
|
3.04 Sep 12, 1999 - Jens Axboe <[email protected]> |
|
-- Fixed a couple of possible memory leaks (if an operation failed and |
|
we didn't free the buffer before returning the error). |
|
-- Integrated Uniform CD Changer handling from Richard Sharman |
|
<[email protected]>. |
|
-- Defined CD_DVD and CD_CHANGER log levels. |
|
-- Fixed the CDROMREADxxx ioctls. |
|
-- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few |
|
drives supported it. We lose the index part, however. |
|
-- Small modifications to accommodate opens of /dev/hdc1, required |
|
for ide-cd to handle multisession discs. |
|
-- Export cdrom_mode_sense and cdrom_mode_select. |
|
-- init_cdrom_command() for setting up a cgc command. |
|
|
|
3.05 Oct 24, 1999 - Jens Axboe <[email protected]> |
|
-- Changed the interface for CDROM_SEND_PACKET. Before it was virtually |
|
impossible to send the drive data in a sensible way. |
|
-- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and |
|
dvd_read_manufact. |
|
-- Added setup of write mode for packet writing. |
|
-- Fixed CDDA ripping with cdda2wav - accept much larger requests of |
|
number of frames and split the reads in blocks of 8. |
|
|
|
3.06 Dec 13, 1999 - Jens Axboe <[email protected]> |
|
-- Added support for changing the region of DVD drives. |
|
-- Added sense data to generic command. |
|
|
|
3.07 Feb 2, 2000 - Jens Axboe <[email protected]> |
|
-- Do same "read header length" trick in cdrom_get_disc_info() as |
|
we do in cdrom_get_track_info() -- some drive don't obey specs and |
|
fail if they can't supply the full Mt Fuji size table. |
|
-- Deleted stuff related to setting up write modes. It has a different |
|
home now. |
|
-- Clear header length in mode_select unconditionally. |
|
-- Removed the register_disk() that was added, not needed here. |
|
|
|
3.08 May 1, 2000 - Jens Axboe <[email protected]> |
|
-- Fix direction flag in setup_send_key and setup_report_key. This |
|
gave some SCSI adapters problems. |
|
-- Always return -EROFS for write opens |
|
-- Convert to module_init/module_exit style init and remove some |
|
of the #ifdef MODULE stuff |
|
-- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid, |
|
DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and |
|
dvd_do_auth passed uninitialized data to drive because init_cdrom_command |
|
did not clear a 0 sized buffer. |
|
|
|
3.09 May 12, 2000 - Jens Axboe <[email protected]> |
|
-- Fix Video-CD on SCSI drives that don't support READ_CD command. In |
|
that case switch block size and issue plain READ_10 again, then switch |
|
back. |
|
|
|
3.10 Jun 10, 2000 - Jens Axboe <[email protected]> |
|
-- Fix volume control on CD's - old SCSI-II drives now use their own |
|
code, as doing MODE6 stuff in here is really not my intention. |
|
-- Use READ_DISC_INFO for more reliable end-of-disc. |
|
|
|
3.11 Jun 12, 2000 - Jens Axboe <[email protected]> |
|
-- Fix bug in getting rpc phase 2 region info. |
|
-- Reinstate "correct" CDROMPLAYTRKIND |
|
|
|
3.12 Oct 18, 2000 - Jens Axboe <[email protected]> |
|
-- Use quiet bit on packet commands not known to work |
|
|
|
3.20 Dec 17, 2003 - Jens Axboe <[email protected]> |
|
-- Various fixes and lots of cleanups not listed :-) |
|
-- Locking fixes |
|
-- Mt Rainier support |
|
-- DVD-RAM write open fixes |
|
|
|
Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov |
|
<[email protected]> to support MMC-3 compliant DVD+RW units. |
|
|
|
Modified by Nigel Kukard <[email protected]> - support DVD+RW |
|
2.4.x patch by Andy Polyakov <[email protected]> |
|
|
|
-------------------------------------------------------------------------*/ |
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
|
|
|
#define REVISION "Revision: 3.20" |
|
#define VERSION "Id: cdrom.c 3.20 2003/12/17" |
|
|
|
/* I use an error-log mask to give fine grain control over the type of |
|
messages dumped to the system logs. The available masks include: */ |
|
#define CD_NOTHING 0x0 |
|
#define CD_WARNING 0x1 |
|
#define CD_REG_UNREG 0x2 |
|
#define CD_DO_IOCTL 0x4 |
|
#define CD_OPEN 0x8 |
|
#define CD_CLOSE 0x10 |
|
#define CD_COUNT_TRACKS 0x20 |
|
#define CD_CHANGER 0x40 |
|
#define CD_DVD 0x80 |
|
|
|
/* Define this to remove _all_ the debugging messages */ |
|
/* #define ERRLOGMASK CD_NOTHING */ |
|
#define ERRLOGMASK CD_WARNING |
|
/* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */ |
|
/* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */ |
|
|
|
#include <linux/atomic.h> |
|
#include <linux/module.h> |
|
#include <linux/fs.h> |
|
#include <linux/major.h> |
|
#include <linux/types.h> |
|
#include <linux/errno.h> |
|
#include <linux/kernel.h> |
|
#include <linux/mm.h> |
|
#include <linux/slab.h> |
|
#include <linux/cdrom.h> |
|
#include <linux/sysctl.h> |
|
#include <linux/proc_fs.h> |
|
#include <linux/blkpg.h> |
|
#include <linux/init.h> |
|
#include <linux/fcntl.h> |
|
#include <linux/blkdev.h> |
|
#include <linux/times.h> |
|
#include <linux/uaccess.h> |
|
#include <scsi/scsi_common.h> |
|
#include <scsi/scsi_request.h> |
|
|
|
/* used to tell the module to turn on full debugging messages */ |
|
static bool debug; |
|
/* default compatibility mode */ |
|
static bool autoclose=1; |
|
static bool autoeject; |
|
static bool lockdoor = 1; |
|
/* will we ever get to use this... sigh. */ |
|
static bool check_media_type; |
|
/* automatically restart mrw format */ |
|
static bool mrw_format_restart = 1; |
|
module_param(debug, bool, 0); |
|
module_param(autoclose, bool, 0); |
|
module_param(autoeject, bool, 0); |
|
module_param(lockdoor, bool, 0); |
|
module_param(check_media_type, bool, 0); |
|
module_param(mrw_format_restart, bool, 0); |
|
|
|
static DEFINE_MUTEX(cdrom_mutex); |
|
|
|
static const char *mrw_format_status[] = { |
|
"not mrw", |
|
"bgformat inactive", |
|
"bgformat active", |
|
"mrw complete", |
|
}; |
|
|
|
static const char *mrw_address_space[] = { "DMA", "GAA" }; |
|
|
|
#if (ERRLOGMASK != CD_NOTHING) |
|
#define cd_dbg(type, fmt, ...) \ |
|
do { \ |
|
if ((ERRLOGMASK & type) || debug == 1) \ |
|
pr_debug(fmt, ##__VA_ARGS__); \ |
|
} while (0) |
|
#else |
|
#define cd_dbg(type, fmt, ...) \ |
|
do { \ |
|
if (0 && (ERRLOGMASK & type) || debug == 1) \ |
|
pr_debug(fmt, ##__VA_ARGS__); \ |
|
} while (0) |
|
#endif |
|
|
|
/* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in |
|
a lot of places. This macro makes the code more clear. */ |
|
#define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) |
|
|
|
/* |
|
* Another popular OS uses 7 seconds as the hard timeout for default |
|
* commands, so it is a good choice for us as well. |
|
*/ |
|
#define CDROM_DEF_TIMEOUT (7 * HZ) |
|
|
|
/* Not-exported routines. */ |
|
|
|
static void cdrom_sysctl_register(void); |
|
|
|
static LIST_HEAD(cdrom_list); |
|
|
|
int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, |
|
struct packet_command *cgc) |
|
{ |
|
if (cgc->sshdr) { |
|
cgc->sshdr->sense_key = 0x05; |
|
cgc->sshdr->asc = 0x20; |
|
cgc->sshdr->ascq = 0x00; |
|
} |
|
|
|
cgc->stat = -EIO; |
|
return -EIO; |
|
} |
|
EXPORT_SYMBOL(cdrom_dummy_generic_packet); |
|
|
|
static int cdrom_flush_cache(struct cdrom_device_info *cdi) |
|
{ |
|
struct packet_command cgc; |
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
|
cgc.cmd[0] = GPCMD_FLUSH_CACHE; |
|
|
|
cgc.timeout = 5 * 60 * HZ; |
|
|
|
return cdi->ops->generic_packet(cdi, &cgc); |
|
} |
|
|
|
/* requires CD R/RW */ |
|
static int cdrom_get_disc_info(struct cdrom_device_info *cdi, |
|
disc_information *di) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
struct packet_command cgc; |
|
int ret, buflen; |
|
|
|
/* set up command and get the disc info */ |
|
init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); |
|
cgc.cmd[0] = GPCMD_READ_DISC_INFO; |
|
cgc.cmd[8] = cgc.buflen = 2; |
|
cgc.quiet = 1; |
|
|
|
ret = cdo->generic_packet(cdi, &cgc); |
|
if (ret) |
|
return ret; |
|
|
|
/* not all drives have the same disc_info length, so requeue |
|
* packet with the length the drive tells us it can supply |
|
*/ |
|
buflen = be16_to_cpu(di->disc_information_length) + |
|
sizeof(di->disc_information_length); |
|
|
|
if (buflen > sizeof(disc_information)) |
|
buflen = sizeof(disc_information); |
|
|
|
cgc.cmd[8] = cgc.buflen = buflen; |
|
ret = cdo->generic_packet(cdi, &cgc); |
|
if (ret) |
|
return ret; |
|
|
|
/* return actual fill size */ |
|
return buflen; |
|
} |
|
|
|
/* This macro makes sure we don't have to check on cdrom_device_ops |
|
* existence in the run-time routines below. Change_capability is a |
|
* hack to have the capability flags defined const, while we can still |
|
* change it here without gcc complaining at every line. |
|
*/ |
|
#define ENSURE(cdo, call, bits) \ |
|
do { \ |
|
if (cdo->call == NULL) \ |
|
WARN_ON_ONCE((cdo)->capability & (bits)); \ |
|
} while (0) |
|
|
|
/* |
|
* the first prototypes used 0x2c as the page code for the mrw mode page, |
|
* subsequently this was changed to 0x03. probe the one used by this drive |
|
*/ |
|
static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) |
|
{ |
|
struct packet_command cgc; |
|
char buffer[16]; |
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
|
|
|
cgc.timeout = HZ; |
|
cgc.quiet = 1; |
|
|
|
if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { |
|
cdi->mrw_mode_page = MRW_MODE_PC; |
|
return 0; |
|
} else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { |
|
cdi->mrw_mode_page = MRW_MODE_PC_PRE1; |
|
return 0; |
|
} |
|
|
|
return 1; |
|
} |
|
|
|
static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) |
|
{ |
|
struct packet_command cgc; |
|
struct mrw_feature_desc *mfd; |
|
unsigned char buffer[16]; |
|
int ret; |
|
|
|
*write = 0; |
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
|
|
|
cgc.cmd[0] = GPCMD_GET_CONFIGURATION; |
|
cgc.cmd[3] = CDF_MRW; |
|
cgc.cmd[8] = sizeof(buffer); |
|
cgc.quiet = 1; |
|
|
|
if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; |
|
if (be16_to_cpu(mfd->feature_code) != CDF_MRW) |
|
return 1; |
|
*write = mfd->write; |
|
|
|
if ((ret = cdrom_mrw_probe_pc(cdi))) { |
|
*write = 0; |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) |
|
{ |
|
struct packet_command cgc; |
|
unsigned char buffer[12]; |
|
int ret; |
|
|
|
pr_info("%sstarting format\n", cont ? "Re" : ""); |
|
|
|
/* |
|
* FmtData bit set (bit 4), format type is 1 |
|
*/ |
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); |
|
cgc.cmd[0] = GPCMD_FORMAT_UNIT; |
|
cgc.cmd[1] = (1 << 4) | 1; |
|
|
|
cgc.timeout = 5 * 60 * HZ; |
|
|
|
/* |
|
* 4 byte format list header, 8 byte format list descriptor |
|
*/ |
|
buffer[1] = 1 << 1; |
|
buffer[3] = 8; |
|
|
|
/* |
|
* nr_blocks field |
|
*/ |
|
buffer[4] = 0xff; |
|
buffer[5] = 0xff; |
|
buffer[6] = 0xff; |
|
buffer[7] = 0xff; |
|
|
|
buffer[8] = 0x24 << 2; |
|
buffer[11] = cont; |
|
|
|
ret = cdi->ops->generic_packet(cdi, &cgc); |
|
if (ret) |
|
pr_info("bgformat failed\n"); |
|
|
|
return ret; |
|
} |
|
|
|
static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) |
|
{ |
|
struct packet_command cgc; |
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
|
cgc.cmd[0] = GPCMD_CLOSE_TRACK; |
|
|
|
/* |
|
* Session = 1, Track = 0 |
|
*/ |
|
cgc.cmd[1] = !!immed; |
|
cgc.cmd[2] = 1 << 1; |
|
|
|
cgc.timeout = 5 * 60 * HZ; |
|
|
|
return cdi->ops->generic_packet(cdi, &cgc); |
|
} |
|
|
|
static int cdrom_mrw_exit(struct cdrom_device_info *cdi) |
|
{ |
|
disc_information di; |
|
int ret; |
|
|
|
ret = cdrom_get_disc_info(cdi, &di); |
|
if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) |
|
return 1; |
|
|
|
ret = 0; |
|
if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { |
|
pr_info("issuing MRW background format suspend\n"); |
|
ret = cdrom_mrw_bgformat_susp(cdi, 0); |
|
} |
|
|
|
if (!ret && cdi->media_written) |
|
ret = cdrom_flush_cache(cdi); |
|
|
|
return ret; |
|
} |
|
|
|
static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) |
|
{ |
|
struct packet_command cgc; |
|
struct mode_page_header *mph; |
|
char buffer[16]; |
|
int ret, offset, size; |
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
|
|
|
cgc.buffer = buffer; |
|
cgc.buflen = sizeof(buffer); |
|
|
|
ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0); |
|
if (ret) |
|
return ret; |
|
|
|
mph = (struct mode_page_header *)buffer; |
|
offset = be16_to_cpu(mph->desc_length); |
|
size = be16_to_cpu(mph->mode_data_length) + 2; |
|
|
|
buffer[offset + 3] = space; |
|
cgc.buflen = size; |
|
|
|
ret = cdrom_mode_select(cdi, &cgc); |
|
if (ret) |
|
return ret; |
|
|
|
pr_info("%s: mrw address space %s selected\n", |
|
cdi->name, mrw_address_space[space]); |
|
return 0; |
|
} |
|
|
|
int register_cdrom(struct gendisk *disk, struct cdrom_device_info *cdi) |
|
{ |
|
static char banner_printed; |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
|
|
cd_dbg(CD_OPEN, "entering register_cdrom\n"); |
|
|
|
if (cdo->open == NULL || cdo->release == NULL) |
|
return -EINVAL; |
|
if (!banner_printed) { |
|
pr_info("Uniform CD-ROM driver " REVISION "\n"); |
|
banner_printed = 1; |
|
cdrom_sysctl_register(); |
|
} |
|
|
|
cdi->disk = disk; |
|
disk->cdi = cdi; |
|
|
|
ENSURE(cdo, drive_status, CDC_DRIVE_STATUS); |
|
if (cdo->check_events == NULL) |
|
WARN_ON_ONCE(cdo->capability & (CDC_MEDIA_CHANGED | CDC_SELECT_DISC)); |
|
ENSURE(cdo, tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); |
|
ENSURE(cdo, lock_door, CDC_LOCK); |
|
ENSURE(cdo, select_speed, CDC_SELECT_SPEED); |
|
ENSURE(cdo, get_last_session, CDC_MULTI_SESSION); |
|
ENSURE(cdo, get_mcn, CDC_MCN); |
|
ENSURE(cdo, reset, CDC_RESET); |
|
ENSURE(cdo, generic_packet, CDC_GENERIC_PACKET); |
|
cdi->mc_flags = 0; |
|
cdi->options = CDO_USE_FFLAGS; |
|
|
|
if (autoclose == 1 && CDROM_CAN(CDC_CLOSE_TRAY)) |
|
cdi->options |= (int) CDO_AUTO_CLOSE; |
|
if (autoeject == 1 && CDROM_CAN(CDC_OPEN_TRAY)) |
|
cdi->options |= (int) CDO_AUTO_EJECT; |
|
if (lockdoor == 1) |
|
cdi->options |= (int) CDO_LOCK; |
|
if (check_media_type == 1) |
|
cdi->options |= (int) CDO_CHECK_TYPE; |
|
|
|
if (CDROM_CAN(CDC_MRW_W)) |
|
cdi->exit = cdrom_mrw_exit; |
|
|
|
if (cdi->ops->read_cdda_bpc) |
|
cdi->cdda_method = CDDA_BPC_FULL; |
|
else |
|
cdi->cdda_method = CDDA_OLD; |
|
|
|
WARN_ON(!cdo->generic_packet); |
|
|
|
cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); |
|
mutex_lock(&cdrom_mutex); |
|
list_add(&cdi->list, &cdrom_list); |
|
mutex_unlock(&cdrom_mutex); |
|
return 0; |
|
} |
|
#undef ENSURE |
|
|
|
void unregister_cdrom(struct cdrom_device_info *cdi) |
|
{ |
|
cd_dbg(CD_OPEN, "entering unregister_cdrom\n"); |
|
|
|
mutex_lock(&cdrom_mutex); |
|
list_del(&cdi->list); |
|
mutex_unlock(&cdrom_mutex); |
|
|
|
if (cdi->exit) |
|
cdi->exit(cdi); |
|
|
|
cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); |
|
} |
|
|
|
int cdrom_get_media_event(struct cdrom_device_info *cdi, |
|
struct media_event_desc *med) |
|
{ |
|
struct packet_command cgc; |
|
unsigned char buffer[8]; |
|
struct event_header *eh = (struct event_header *)buffer; |
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
|
cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; |
|
cgc.cmd[1] = 1; /* IMMED */ |
|
cgc.cmd[4] = 1 << 4; /* media event */ |
|
cgc.cmd[8] = sizeof(buffer); |
|
cgc.quiet = 1; |
|
|
|
if (cdi->ops->generic_packet(cdi, &cgc)) |
|
return 1; |
|
|
|
if (be16_to_cpu(eh->data_len) < sizeof(*med)) |
|
return 1; |
|
|
|
if (eh->nea || eh->notification_class != 0x4) |
|
return 1; |
|
|
|
memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); |
|
return 0; |
|
} |
|
|
|
static int cdrom_get_random_writable(struct cdrom_device_info *cdi, |
|
struct rwrt_feature_desc *rfd) |
|
{ |
|
struct packet_command cgc; |
|
char buffer[24]; |
|
int ret; |
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
|
|
|
cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ |
|
cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ |
|
cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ |
|
cgc.quiet = 1; |
|
|
|
if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); |
|
return 0; |
|
} |
|
|
|
static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) |
|
{ |
|
struct packet_command cgc; |
|
char buffer[16]; |
|
__be16 *feature_code; |
|
int ret; |
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
|
|
|
cgc.cmd[0] = GPCMD_GET_CONFIGURATION; |
|
cgc.cmd[3] = CDF_HWDM; |
|
cgc.cmd[8] = sizeof(buffer); |
|
cgc.quiet = 1; |
|
|
|
if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; |
|
if (be16_to_cpu(*feature_code) == CDF_HWDM) |
|
return 0; |
|
|
|
return 1; |
|
} |
|
|
|
|
|
static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) |
|
{ |
|
struct rwrt_feature_desc rfd; |
|
int ret; |
|
|
|
*write = 0; |
|
|
|
if ((ret = cdrom_get_random_writable(cdi, &rfd))) |
|
return ret; |
|
|
|
if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) |
|
*write = 1; |
|
|
|
return 0; |
|
} |
|
|
|
static int cdrom_media_erasable(struct cdrom_device_info *cdi) |
|
{ |
|
disc_information di; |
|
int ret; |
|
|
|
ret = cdrom_get_disc_info(cdi, &di); |
|
if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) |
|
return -1; |
|
|
|
return di.erasable; |
|
} |
|
|
|
/* |
|
* FIXME: check RO bit |
|
*/ |
|
static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) |
|
{ |
|
int ret = cdrom_media_erasable(cdi); |
|
|
|
/* |
|
* allow writable open if media info read worked and media is |
|
* erasable, _or_ if it fails since not all drives support it |
|
*/ |
|
if (!ret) |
|
return 1; |
|
|
|
return 0; |
|
} |
|
|
|
static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) |
|
{ |
|
disc_information di; |
|
int ret; |
|
|
|
/* |
|
* always reset to DMA lba space on open |
|
*/ |
|
if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { |
|
pr_err("failed setting lba address space\n"); |
|
return 1; |
|
} |
|
|
|
ret = cdrom_get_disc_info(cdi, &di); |
|
if (ret < 0 || ret < offsetof(typeof(di),disc_type)) |
|
return 1; |
|
|
|
if (!di.erasable) |
|
return 1; |
|
|
|
/* |
|
* mrw_status |
|
* 0 - not MRW formatted |
|
* 1 - MRW bgformat started, but not running or complete |
|
* 2 - MRW bgformat in progress |
|
* 3 - MRW formatting complete |
|
*/ |
|
ret = 0; |
|
pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]); |
|
if (!di.mrw_status) |
|
ret = 1; |
|
else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && |
|
mrw_format_restart) |
|
ret = cdrom_mrw_bgformat(cdi, 1); |
|
|
|
return ret; |
|
} |
|
|
|
static int mo_open_write(struct cdrom_device_info *cdi) |
|
{ |
|
struct packet_command cgc; |
|
char buffer[255]; |
|
int ret; |
|
|
|
init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); |
|
cgc.quiet = 1; |
|
|
|
/* |
|
* obtain write protect information as per |
|
* drivers/scsi/sd.c:sd_read_write_protect_flag |
|
*/ |
|
|
|
ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); |
|
if (ret) |
|
ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); |
|
if (ret) { |
|
cgc.buflen = 255; |
|
ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); |
|
} |
|
|
|
/* drive gave us no info, let the user go ahead */ |
|
if (ret) |
|
return 0; |
|
|
|
return buffer[3] & 0x80; |
|
} |
|
|
|
static int cdrom_ram_open_write(struct cdrom_device_info *cdi) |
|
{ |
|
struct rwrt_feature_desc rfd; |
|
int ret; |
|
|
|
if ((ret = cdrom_has_defect_mgt(cdi))) |
|
return ret; |
|
|
|
if ((ret = cdrom_get_random_writable(cdi, &rfd))) |
|
return ret; |
|
else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) |
|
ret = !rfd.curr; |
|
|
|
cd_dbg(CD_OPEN, "can open for random write\n"); |
|
return ret; |
|
} |
|
|
|
static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) |
|
{ |
|
struct packet_command cgc; |
|
char buffer[32]; |
|
int ret, mmc3_profile; |
|
|
|
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
|
|
|
cgc.cmd[0] = GPCMD_GET_CONFIGURATION; |
|
cgc.cmd[1] = 0; |
|
cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ |
|
cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ |
|
cgc.quiet = 1; |
|
|
|
if ((ret = cdi->ops->generic_packet(cdi, &cgc))) |
|
mmc3_profile = 0xffff; |
|
else |
|
mmc3_profile = (buffer[6] << 8) | buffer[7]; |
|
|
|
cdi->mmc3_profile = mmc3_profile; |
|
} |
|
|
|
static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) |
|
{ |
|
switch (cdi->mmc3_profile) { |
|
case 0x12: /* DVD-RAM */ |
|
case 0x1A: /* DVD+RW */ |
|
case 0x43: /* BD-RE */ |
|
return 0; |
|
default: |
|
return 1; |
|
} |
|
} |
|
|
|
/* |
|
* returns 0 for ok to open write, non-0 to disallow |
|
*/ |
|
static int cdrom_open_write(struct cdrom_device_info *cdi) |
|
{ |
|
int mrw, mrw_write, ram_write; |
|
int ret = 1; |
|
|
|
mrw = 0; |
|
if (!cdrom_is_mrw(cdi, &mrw_write)) |
|
mrw = 1; |
|
|
|
if (CDROM_CAN(CDC_MO_DRIVE)) |
|
ram_write = 1; |
|
else |
|
(void) cdrom_is_random_writable(cdi, &ram_write); |
|
|
|
if (mrw) |
|
cdi->mask &= ~CDC_MRW; |
|
else |
|
cdi->mask |= CDC_MRW; |
|
|
|
if (mrw_write) |
|
cdi->mask &= ~CDC_MRW_W; |
|
else |
|
cdi->mask |= CDC_MRW_W; |
|
|
|
if (ram_write) |
|
cdi->mask &= ~CDC_RAM; |
|
else |
|
cdi->mask |= CDC_RAM; |
|
|
|
if (CDROM_CAN(CDC_MRW_W)) |
|
ret = cdrom_mrw_open_write(cdi); |
|
else if (CDROM_CAN(CDC_DVD_RAM)) |
|
ret = cdrom_dvdram_open_write(cdi); |
|
else if (CDROM_CAN(CDC_RAM) && |
|
!CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE)) |
|
ret = cdrom_ram_open_write(cdi); |
|
else if (CDROM_CAN(CDC_MO_DRIVE)) |
|
ret = mo_open_write(cdi); |
|
else if (!cdrom_is_dvd_rw(cdi)) |
|
ret = 0; |
|
|
|
return ret; |
|
} |
|
|
|
static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) |
|
{ |
|
struct packet_command cgc; |
|
|
|
if (cdi->mmc3_profile != 0x1a) { |
|
cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); |
|
return; |
|
} |
|
|
|
if (!cdi->media_written) { |
|
cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); |
|
return; |
|
} |
|
|
|
pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name); |
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
|
cgc.cmd[0] = GPCMD_FLUSH_CACHE; |
|
cgc.timeout = 30*HZ; |
|
cdi->ops->generic_packet(cdi, &cgc); |
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
|
cgc.cmd[0] = GPCMD_CLOSE_TRACK; |
|
cgc.timeout = 3000*HZ; |
|
cgc.quiet = 1; |
|
cdi->ops->generic_packet(cdi, &cgc); |
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
|
cgc.cmd[0] = GPCMD_CLOSE_TRACK; |
|
cgc.cmd[2] = 2; /* Close session */ |
|
cgc.quiet = 1; |
|
cgc.timeout = 3000*HZ; |
|
cdi->ops->generic_packet(cdi, &cgc); |
|
|
|
cdi->media_written = 0; |
|
} |
|
|
|
static int cdrom_close_write(struct cdrom_device_info *cdi) |
|
{ |
|
#if 0 |
|
return cdrom_flush_cache(cdi); |
|
#else |
|
return 0; |
|
#endif |
|
} |
|
|
|
/* badly broken, I know. Is due for a fixup anytime. */ |
|
static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks) |
|
{ |
|
struct cdrom_tochdr header; |
|
struct cdrom_tocentry entry; |
|
int ret, i; |
|
tracks->data = 0; |
|
tracks->audio = 0; |
|
tracks->cdi = 0; |
|
tracks->xa = 0; |
|
tracks->error = 0; |
|
cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); |
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO)) { |
|
tracks->error = CDS_NO_INFO; |
|
return; |
|
} |
|
|
|
/* Grab the TOC header so we can see how many tracks there are */ |
|
ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); |
|
if (ret) { |
|
if (ret == -ENOMEDIUM) |
|
tracks->error = CDS_NO_DISC; |
|
else |
|
tracks->error = CDS_NO_INFO; |
|
return; |
|
} |
|
/* check what type of tracks are on this disc */ |
|
entry.cdte_format = CDROM_MSF; |
|
for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { |
|
entry.cdte_track = i; |
|
if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { |
|
tracks->error = CDS_NO_INFO; |
|
return; |
|
} |
|
if (entry.cdte_ctrl & CDROM_DATA_TRACK) { |
|
if (entry.cdte_format == 0x10) |
|
tracks->cdi++; |
|
else if (entry.cdte_format == 0x20) |
|
tracks->xa++; |
|
else |
|
tracks->data++; |
|
} else { |
|
tracks->audio++; |
|
} |
|
cd_dbg(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", |
|
i, entry.cdte_format, entry.cdte_ctrl); |
|
} |
|
cd_dbg(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", |
|
header.cdth_trk1, tracks->audio, tracks->data, |
|
tracks->cdi, tracks->xa); |
|
} |
|
|
|
static |
|
int open_for_data(struct cdrom_device_info *cdi) |
|
{ |
|
int ret; |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
tracktype tracks; |
|
cd_dbg(CD_OPEN, "entering open_for_data\n"); |
|
/* Check if the driver can report drive status. If it can, we |
|
can do clever things. If it can't, well, we at least tried! */ |
|
if (cdo->drive_status != NULL) { |
|
ret = cdo->drive_status(cdi, CDSL_CURRENT); |
|
cd_dbg(CD_OPEN, "drive_status=%d\n", ret); |
|
if (ret == CDS_TRAY_OPEN) { |
|
cd_dbg(CD_OPEN, "the tray is open...\n"); |
|
/* can/may i close it? */ |
|
if (CDROM_CAN(CDC_CLOSE_TRAY) && |
|
cdi->options & CDO_AUTO_CLOSE) { |
|
cd_dbg(CD_OPEN, "trying to close the tray\n"); |
|
ret=cdo->tray_move(cdi,0); |
|
if (ret) { |
|
cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n"); |
|
/* Ignore the error from the low |
|
level driver. We don't care why it |
|
couldn't close the tray. We only care |
|
that there is no disc in the drive, |
|
since that is the _REAL_ problem here.*/ |
|
ret=-ENOMEDIUM; |
|
goto clean_up_and_return; |
|
} |
|
} else { |
|
cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n"); |
|
ret=-ENOMEDIUM; |
|
goto clean_up_and_return; |
|
} |
|
/* Ok, the door should be closed now.. Check again */ |
|
ret = cdo->drive_status(cdi, CDSL_CURRENT); |
|
if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { |
|
cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); |
|
cd_dbg(CD_OPEN, "tray might not contain a medium\n"); |
|
ret=-ENOMEDIUM; |
|
goto clean_up_and_return; |
|
} |
|
cd_dbg(CD_OPEN, "the tray is now closed\n"); |
|
} |
|
/* the door should be closed now, check for the disc */ |
|
ret = cdo->drive_status(cdi, CDSL_CURRENT); |
|
if (ret!=CDS_DISC_OK) { |
|
ret = -ENOMEDIUM; |
|
goto clean_up_and_return; |
|
} |
|
} |
|
cdrom_count_tracks(cdi, &tracks); |
|
if (tracks.error == CDS_NO_DISC) { |
|
cd_dbg(CD_OPEN, "bummer. no disc.\n"); |
|
ret=-ENOMEDIUM; |
|
goto clean_up_and_return; |
|
} |
|
/* CD-Players which don't use O_NONBLOCK, workman |
|
* for example, need bit CDO_CHECK_TYPE cleared! */ |
|
if (tracks.data==0) { |
|
if (cdi->options & CDO_CHECK_TYPE) { |
|
/* give people a warning shot, now that CDO_CHECK_TYPE |
|
is the default case! */ |
|
cd_dbg(CD_OPEN, "bummer. wrong media type.\n"); |
|
cd_dbg(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", |
|
(unsigned int)task_pid_nr(current)); |
|
ret=-EMEDIUMTYPE; |
|
goto clean_up_and_return; |
|
} |
|
else { |
|
cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n"); |
|
} |
|
} |
|
|
|
cd_dbg(CD_OPEN, "all seems well, opening the devicen"); |
|
|
|
/* all seems well, we can open the device */ |
|
ret = cdo->open(cdi, 0); /* open for data */ |
|
cd_dbg(CD_OPEN, "opening the device gave me %d\n", ret); |
|
/* After all this careful checking, we shouldn't have problems |
|
opening the device, but we don't want the device locked if |
|
this somehow fails... */ |
|
if (ret) { |
|
cd_dbg(CD_OPEN, "open device failed\n"); |
|
goto clean_up_and_return; |
|
} |
|
if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { |
|
cdo->lock_door(cdi, 1); |
|
cd_dbg(CD_OPEN, "door locked\n"); |
|
} |
|
cd_dbg(CD_OPEN, "device opened successfully\n"); |
|
return ret; |
|
|
|
/* Something failed. Try to unlock the drive, because some drivers |
|
(notably ide-cd) lock the drive after every command. This produced |
|
a nasty bug where after mount failed, the drive would remain locked! |
|
This ensures that the drive gets unlocked after a mount fails. This |
|
is a goto to avoid bloating the driver with redundant code. */ |
|
clean_up_and_return: |
|
cd_dbg(CD_OPEN, "open failed\n"); |
|
if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
|
cdo->lock_door(cdi, 0); |
|
cd_dbg(CD_OPEN, "door unlocked\n"); |
|
} |
|
return ret; |
|
} |
|
|
|
/* We use the open-option O_NONBLOCK to indicate that the |
|
* purpose of opening is only for subsequent ioctl() calls; no device |
|
* integrity checks are performed. |
|
* |
|
* We hope that all cd-player programs will adopt this convention. It |
|
* is in their own interest: device control becomes a lot easier |
|
* this way. |
|
*/ |
|
int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, |
|
fmode_t mode) |
|
{ |
|
int ret; |
|
|
|
cd_dbg(CD_OPEN, "entering cdrom_open\n"); |
|
|
|
/* if this was a O_NONBLOCK open and we should honor the flags, |
|
* do a quick open without drive/disc integrity checks. */ |
|
cdi->use_count++; |
|
if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) { |
|
ret = cdi->ops->open(cdi, 1); |
|
} else { |
|
ret = open_for_data(cdi); |
|
if (ret) |
|
goto err; |
|
if (CDROM_CAN(CDC_GENERIC_PACKET)) |
|
cdrom_mmc3_profile(cdi); |
|
if (mode & FMODE_WRITE) { |
|
ret = -EROFS; |
|
if (cdrom_open_write(cdi)) |
|
goto err_release; |
|
if (!CDROM_CAN(CDC_RAM)) |
|
goto err_release; |
|
ret = 0; |
|
cdi->media_written = 0; |
|
} |
|
} |
|
|
|
if (ret) |
|
goto err; |
|
|
|
cd_dbg(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", |
|
cdi->name, cdi->use_count); |
|
return 0; |
|
err_release: |
|
if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
|
cdi->ops->lock_door(cdi, 0); |
|
cd_dbg(CD_OPEN, "door unlocked\n"); |
|
} |
|
cdi->ops->release(cdi); |
|
err: |
|
cdi->use_count--; |
|
return ret; |
|
} |
|
|
|
/* This code is similar to that in open_for_data. The routine is called |
|
whenever an audio play operation is requested. |
|
*/ |
|
static int check_for_audio_disc(struct cdrom_device_info *cdi, |
|
const struct cdrom_device_ops *cdo) |
|
{ |
|
int ret; |
|
tracktype tracks; |
|
cd_dbg(CD_OPEN, "entering check_for_audio_disc\n"); |
|
if (!(cdi->options & CDO_CHECK_TYPE)) |
|
return 0; |
|
if (cdo->drive_status != NULL) { |
|
ret = cdo->drive_status(cdi, CDSL_CURRENT); |
|
cd_dbg(CD_OPEN, "drive_status=%d\n", ret); |
|
if (ret == CDS_TRAY_OPEN) { |
|
cd_dbg(CD_OPEN, "the tray is open...\n"); |
|
/* can/may i close it? */ |
|
if (CDROM_CAN(CDC_CLOSE_TRAY) && |
|
cdi->options & CDO_AUTO_CLOSE) { |
|
cd_dbg(CD_OPEN, "trying to close the tray\n"); |
|
ret=cdo->tray_move(cdi,0); |
|
if (ret) { |
|
cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n"); |
|
/* Ignore the error from the low |
|
level driver. We don't care why it |
|
couldn't close the tray. We only care |
|
that there is no disc in the drive, |
|
since that is the _REAL_ problem here.*/ |
|
return -ENOMEDIUM; |
|
} |
|
} else { |
|
cd_dbg(CD_OPEN, "bummer. this driver can't close the tray.\n"); |
|
return -ENOMEDIUM; |
|
} |
|
/* Ok, the door should be closed now.. Check again */ |
|
ret = cdo->drive_status(cdi, CDSL_CURRENT); |
|
if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { |
|
cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); |
|
return -ENOMEDIUM; |
|
} |
|
if (ret!=CDS_DISC_OK) { |
|
cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n"); |
|
return -EIO; |
|
} |
|
cd_dbg(CD_OPEN, "the tray is now closed\n"); |
|
} |
|
} |
|
cdrom_count_tracks(cdi, &tracks); |
|
if (tracks.error) |
|
return(tracks.error); |
|
|
|
if (tracks.audio==0) |
|
return -EMEDIUMTYPE; |
|
|
|
return 0; |
|
} |
|
|
|
void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
int opened_for_data; |
|
|
|
cd_dbg(CD_CLOSE, "entering cdrom_release\n"); |
|
|
|
if (cdi->use_count > 0) |
|
cdi->use_count--; |
|
|
|
if (cdi->use_count == 0) { |
|
cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", |
|
cdi->name); |
|
cdrom_dvd_rw_close_write(cdi); |
|
|
|
if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) { |
|
cd_dbg(CD_CLOSE, "Unlocking door!\n"); |
|
cdo->lock_door(cdi, 0); |
|
} |
|
} |
|
|
|
opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || |
|
!(mode & FMODE_NDELAY); |
|
|
|
/* |
|
* flush cache on last write release |
|
*/ |
|
if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) |
|
cdrom_close_write(cdi); |
|
|
|
cdo->release(cdi); |
|
if (cdi->use_count == 0) { /* last process that closes dev*/ |
|
if (opened_for_data && |
|
cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) |
|
cdo->tray_move(cdi, 1); |
|
} |
|
} |
|
|
|
static int cdrom_read_mech_status(struct cdrom_device_info *cdi, |
|
struct cdrom_changer_info *buf) |
|
{ |
|
struct packet_command cgc; |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
int length; |
|
|
|
/* |
|
* Sanyo changer isn't spec compliant (doesn't use regular change |
|
* LOAD_UNLOAD command, and it doesn't implement the mech status |
|
* command below |
|
*/ |
|
if (cdi->sanyo_slot) { |
|
buf->hdr.nslots = 3; |
|
buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; |
|
for (length = 0; length < 3; length++) { |
|
buf->slots[length].disc_present = 1; |
|
buf->slots[length].change = 0; |
|
} |
|
return 0; |
|
} |
|
|
|
length = sizeof(struct cdrom_mechstat_header) + |
|
cdi->capacity * sizeof(struct cdrom_slot); |
|
|
|
init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); |
|
cgc.cmd[0] = GPCMD_MECHANISM_STATUS; |
|
cgc.cmd[8] = (length >> 8) & 0xff; |
|
cgc.cmd[9] = length & 0xff; |
|
return cdo->generic_packet(cdi, &cgc); |
|
} |
|
|
|
static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) |
|
{ |
|
struct cdrom_changer_info *info; |
|
int ret; |
|
|
|
cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n"); |
|
if (cdi->sanyo_slot) |
|
return CDS_NO_INFO; |
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL); |
|
if (!info) |
|
return -ENOMEM; |
|
|
|
if ((ret = cdrom_read_mech_status(cdi, info))) |
|
goto out_free; |
|
|
|
if (info->slots[slot].disc_present) |
|
ret = CDS_DISC_OK; |
|
else |
|
ret = CDS_NO_DISC; |
|
|
|
out_free: |
|
kfree(info); |
|
return ret; |
|
} |
|
|
|
/* Return the number of slots for an ATAPI/SCSI cdrom, |
|
* return 1 if not a changer. |
|
*/ |
|
int cdrom_number_of_slots(struct cdrom_device_info *cdi) |
|
{ |
|
int status; |
|
int nslots = 1; |
|
struct cdrom_changer_info *info; |
|
|
|
cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n"); |
|
/* cdrom_read_mech_status requires a valid value for capacity: */ |
|
cdi->capacity = 0; |
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL); |
|
if (!info) |
|
return -ENOMEM; |
|
|
|
if ((status = cdrom_read_mech_status(cdi, info)) == 0) |
|
nslots = info->hdr.nslots; |
|
|
|
kfree(info); |
|
return nslots; |
|
} |
|
|
|
|
|
/* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ |
|
static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) |
|
{ |
|
struct packet_command cgc; |
|
|
|
cd_dbg(CD_CHANGER, "entering cdrom_load_unload()\n"); |
|
if (cdi->sanyo_slot && slot < 0) |
|
return 0; |
|
|
|
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
|
cgc.cmd[0] = GPCMD_LOAD_UNLOAD; |
|
cgc.cmd[4] = 2 + (slot >= 0); |
|
cgc.cmd[8] = slot; |
|
cgc.timeout = 60 * HZ; |
|
|
|
/* The Sanyo 3 CD changer uses byte 7 of the |
|
GPCMD_TEST_UNIT_READY to command to switch CDs instead of |
|
using the GPCMD_LOAD_UNLOAD opcode. */ |
|
if (cdi->sanyo_slot && -1 < slot) { |
|
cgc.cmd[0] = GPCMD_TEST_UNIT_READY; |
|
cgc.cmd[7] = slot; |
|
cgc.cmd[4] = cgc.cmd[8] = 0; |
|
cdi->sanyo_slot = slot ? slot : 3; |
|
} |
|
|
|
return cdi->ops->generic_packet(cdi, &cgc); |
|
} |
|
|
|
static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) |
|
{ |
|
struct cdrom_changer_info *info; |
|
int curslot; |
|
int ret; |
|
|
|
cd_dbg(CD_CHANGER, "entering cdrom_select_disc()\n"); |
|
if (!CDROM_CAN(CDC_SELECT_DISC)) |
|
return -EDRIVE_CANT_DO_THIS; |
|
|
|
if (cdi->ops->check_events) |
|
cdi->ops->check_events(cdi, 0, slot); |
|
|
|
if (slot == CDSL_NONE) { |
|
/* set media changed bits, on both queues */ |
|
cdi->mc_flags = 0x3; |
|
return cdrom_load_unload(cdi, -1); |
|
} |
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL); |
|
if (!info) |
|
return -ENOMEM; |
|
|
|
if ((ret = cdrom_read_mech_status(cdi, info))) { |
|
kfree(info); |
|
return ret; |
|
} |
|
|
|
curslot = info->hdr.curslot; |
|
kfree(info); |
|
|
|
if (cdi->use_count > 1 || cdi->keeplocked) { |
|
if (slot == CDSL_CURRENT) { |
|
return curslot; |
|
} else { |
|
return -EBUSY; |
|
} |
|
} |
|
|
|
/* Specifying CDSL_CURRENT will attempt to load the currnet slot, |
|
which is useful if it had been previously unloaded. |
|
Whether it can or not, it returns the current slot. |
|
Similarly, if slot happens to be the current one, we still |
|
try and load it. */ |
|
if (slot == CDSL_CURRENT) |
|
slot = curslot; |
|
|
|
/* set media changed bits on both queues */ |
|
cdi->mc_flags = 0x3; |
|
if ((ret = cdrom_load_unload(cdi, slot))) |
|
return ret; |
|
|
|
return slot; |
|
} |
|
|
|
/* |
|
* As cdrom implements an extra ioctl consumer for media changed |
|
* event, it needs to buffer ->check_events() output, such that event |
|
* is not lost for both the usual VFS and ioctl paths. |
|
* cdi->{vfs|ioctl}_events are used to buffer pending events for each |
|
* path. |
|
* |
|
* XXX: Locking is non-existent. cdi->ops->check_events() can be |
|
* called in parallel and buffering fields are accessed without any |
|
* exclusion. The original media_changed code had the same problem. |
|
* It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl |
|
* and remove this cruft altogether. It doesn't have much usefulness |
|
* at this point. |
|
*/ |
|
static void cdrom_update_events(struct cdrom_device_info *cdi, |
|
unsigned int clearing) |
|
{ |
|
unsigned int events; |
|
|
|
events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT); |
|
cdi->vfs_events |= events; |
|
cdi->ioctl_events |= events; |
|
} |
|
|
|
unsigned int cdrom_check_events(struct cdrom_device_info *cdi, |
|
unsigned int clearing) |
|
{ |
|
unsigned int events; |
|
|
|
cdrom_update_events(cdi, clearing); |
|
events = cdi->vfs_events; |
|
cdi->vfs_events = 0; |
|
return events; |
|
} |
|
EXPORT_SYMBOL(cdrom_check_events); |
|
|
|
/* We want to make media_changed accessible to the user through an |
|
* ioctl. The main problem now is that we must double-buffer the |
|
* low-level implementation, to assure that the VFS and the user both |
|
* see a medium change once. |
|
*/ |
|
|
|
static |
|
int media_changed(struct cdrom_device_info *cdi, int queue) |
|
{ |
|
unsigned int mask = (1 << (queue & 1)); |
|
int ret = !!(cdi->mc_flags & mask); |
|
bool changed; |
|
|
|
if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
|
return ret; |
|
|
|
/* changed since last call? */ |
|
BUG_ON(!queue); /* shouldn't be called from VFS path */ |
|
cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE); |
|
changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE; |
|
cdi->ioctl_events = 0; |
|
|
|
if (changed) { |
|
cdi->mc_flags = 0x3; /* set bit on both queues */ |
|
ret |= 1; |
|
cdi->media_written = 0; |
|
} |
|
|
|
cdi->mc_flags &= ~mask; /* clear bit */ |
|
return ret; |
|
} |
|
|
|
/* Requests to the low-level drivers will /always/ be done in the |
|
following format convention: |
|
|
|
CDROM_LBA: all data-related requests. |
|
CDROM_MSF: all audio-related requests. |
|
|
|
However, a low-level implementation is allowed to refuse this |
|
request, and return information in its own favorite format. |
|
|
|
It doesn't make sense /at all/ to ask for a play_audio in LBA |
|
format, or ask for multi-session info in MSF format. However, for |
|
backward compatibility these format requests will be satisfied, but |
|
the requests to the low-level drivers will be sanitized in the more |
|
meaningful format indicated above. |
|
*/ |
|
|
|
static |
|
void sanitize_format(union cdrom_addr *addr, |
|
u_char * curr, u_char requested) |
|
{ |
|
if (*curr == requested) |
|
return; /* nothing to be done! */ |
|
if (requested == CDROM_LBA) { |
|
addr->lba = (int) addr->msf.frame + |
|
75 * (addr->msf.second - 2 + 60 * addr->msf.minute); |
|
} else { /* CDROM_MSF */ |
|
int lba = addr->lba; |
|
addr->msf.frame = lba % 75; |
|
lba /= 75; |
|
lba += 2; |
|
addr->msf.second = lba % 60; |
|
addr->msf.minute = lba / 60; |
|
} |
|
*curr = requested; |
|
} |
|
|
|
void init_cdrom_command(struct packet_command *cgc, void *buf, int len, |
|
int type) |
|
{ |
|
memset(cgc, 0, sizeof(struct packet_command)); |
|
if (buf) |
|
memset(buf, 0, len); |
|
cgc->buffer = (char *) buf; |
|
cgc->buflen = len; |
|
cgc->data_direction = type; |
|
cgc->timeout = CDROM_DEF_TIMEOUT; |
|
} |
|
|
|
/* DVD handling */ |
|
|
|
#define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) |
|
#define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) |
|
|
|
static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) |
|
{ |
|
cgc->cmd[0] = GPCMD_REPORT_KEY; |
|
cgc->cmd[10] = type | (agid << 6); |
|
switch (type) { |
|
case 0: case 8: case 5: { |
|
cgc->buflen = 8; |
|
break; |
|
} |
|
case 1: { |
|
cgc->buflen = 16; |
|
break; |
|
} |
|
case 2: case 4: { |
|
cgc->buflen = 12; |
|
break; |
|
} |
|
} |
|
cgc->cmd[9] = cgc->buflen; |
|
cgc->data_direction = CGC_DATA_READ; |
|
} |
|
|
|
static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) |
|
{ |
|
cgc->cmd[0] = GPCMD_SEND_KEY; |
|
cgc->cmd[10] = type | (agid << 6); |
|
switch (type) { |
|
case 1: { |
|
cgc->buflen = 16; |
|
break; |
|
} |
|
case 3: { |
|
cgc->buflen = 12; |
|
break; |
|
} |
|
case 6: { |
|
cgc->buflen = 8; |
|
break; |
|
} |
|
} |
|
cgc->cmd[9] = cgc->buflen; |
|
cgc->data_direction = CGC_DATA_WRITE; |
|
} |
|
|
|
static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) |
|
{ |
|
int ret; |
|
u_char buf[20]; |
|
struct packet_command cgc; |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
rpc_state_t rpc_state; |
|
|
|
memset(buf, 0, sizeof(buf)); |
|
init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); |
|
|
|
switch (ai->type) { |
|
/* LU data send */ |
|
case DVD_LU_SEND_AGID: |
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n"); |
|
cgc.quiet = 1; |
|
setup_report_key(&cgc, ai->lsa.agid, 0); |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
ai->lsa.agid = buf[7] >> 6; |
|
/* Returning data, let host change state */ |
|
break; |
|
|
|
case DVD_LU_SEND_KEY1: |
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); |
|
setup_report_key(&cgc, ai->lsk.agid, 2); |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
copy_key(ai->lsk.key, &buf[4]); |
|
/* Returning data, let host change state */ |
|
break; |
|
|
|
case DVD_LU_SEND_CHALLENGE: |
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); |
|
setup_report_key(&cgc, ai->lsc.agid, 1); |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
copy_chal(ai->lsc.chal, &buf[4]); |
|
/* Returning data, let host change state */ |
|
break; |
|
|
|
/* Post-auth key */ |
|
case DVD_LU_SEND_TITLE_KEY: |
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); |
|
cgc.quiet = 1; |
|
setup_report_key(&cgc, ai->lstk.agid, 4); |
|
cgc.cmd[5] = ai->lstk.lba; |
|
cgc.cmd[4] = ai->lstk.lba >> 8; |
|
cgc.cmd[3] = ai->lstk.lba >> 16; |
|
cgc.cmd[2] = ai->lstk.lba >> 24; |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
ai->lstk.cpm = (buf[4] >> 7) & 1; |
|
ai->lstk.cp_sec = (buf[4] >> 6) & 1; |
|
ai->lstk.cgms = (buf[4] >> 4) & 3; |
|
copy_key(ai->lstk.title_key, &buf[5]); |
|
/* Returning data, let host change state */ |
|
break; |
|
|
|
case DVD_LU_SEND_ASF: |
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n"); |
|
setup_report_key(&cgc, ai->lsasf.agid, 5); |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
ai->lsasf.asf = buf[7] & 1; |
|
break; |
|
|
|
/* LU data receive (LU changes state) */ |
|
case DVD_HOST_SEND_CHALLENGE: |
|
cd_dbg(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); |
|
setup_send_key(&cgc, ai->hsc.agid, 1); |
|
buf[1] = 0xe; |
|
copy_chal(&buf[4], ai->hsc.chal); |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
ai->type = DVD_LU_SEND_KEY1; |
|
break; |
|
|
|
case DVD_HOST_SEND_KEY2: |
|
cd_dbg(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); |
|
setup_send_key(&cgc, ai->hsk.agid, 3); |
|
buf[1] = 0xa; |
|
copy_key(&buf[4], ai->hsk.key); |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) { |
|
ai->type = DVD_AUTH_FAILURE; |
|
return ret; |
|
} |
|
ai->type = DVD_AUTH_ESTABLISHED; |
|
break; |
|
|
|
/* Misc */ |
|
case DVD_INVALIDATE_AGID: |
|
cgc.quiet = 1; |
|
cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); |
|
setup_report_key(&cgc, ai->lsa.agid, 0x3f); |
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
break; |
|
|
|
/* Get region settings */ |
|
case DVD_LU_SEND_RPC_STATE: |
|
cd_dbg(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); |
|
setup_report_key(&cgc, 0, 8); |
|
memset(&rpc_state, 0, sizeof(rpc_state_t)); |
|
cgc.buffer = (char *) &rpc_state; |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
ai->lrpcs.type = rpc_state.type_code; |
|
ai->lrpcs.vra = rpc_state.vra; |
|
ai->lrpcs.ucca = rpc_state.ucca; |
|
ai->lrpcs.region_mask = rpc_state.region_mask; |
|
ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; |
|
break; |
|
|
|
/* Set region settings */ |
|
case DVD_HOST_SEND_RPC_STATE: |
|
cd_dbg(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); |
|
setup_send_key(&cgc, 0, 6); |
|
buf[1] = 6; |
|
buf[4] = ai->hrpcs.pdrc; |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
break; |
|
|
|
default: |
|
cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); |
|
return -ENOTTY; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s, |
|
struct packet_command *cgc) |
|
{ |
|
unsigned char buf[21], *base; |
|
struct dvd_layer *layer; |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
int ret, layer_num = s->physical.layer_num; |
|
|
|
if (layer_num >= DVD_LAYERS) |
|
return -EINVAL; |
|
|
|
init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
|
cgc->cmd[6] = layer_num; |
|
cgc->cmd[7] = s->type; |
|
cgc->cmd[9] = cgc->buflen & 0xff; |
|
|
|
/* |
|
* refrain from reporting errors on non-existing layers (mainly) |
|
*/ |
|
cgc->quiet = 1; |
|
|
|
ret = cdo->generic_packet(cdi, cgc); |
|
if (ret) |
|
return ret; |
|
|
|
base = &buf[4]; |
|
layer = &s->physical.layer[layer_num]; |
|
|
|
/* |
|
* place the data... really ugly, but at least we won't have to |
|
* worry about endianess in userspace. |
|
*/ |
|
memset(layer, 0, sizeof(*layer)); |
|
layer->book_version = base[0] & 0xf; |
|
layer->book_type = base[0] >> 4; |
|
layer->min_rate = base[1] & 0xf; |
|
layer->disc_size = base[1] >> 4; |
|
layer->layer_type = base[2] & 0xf; |
|
layer->track_path = (base[2] >> 4) & 1; |
|
layer->nlayers = (base[2] >> 5) & 3; |
|
layer->track_density = base[3] & 0xf; |
|
layer->linear_density = base[3] >> 4; |
|
layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; |
|
layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; |
|
layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; |
|
layer->bca = base[16] >> 7; |
|
|
|
return 0; |
|
} |
|
|
|
static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s, |
|
struct packet_command *cgc) |
|
{ |
|
int ret; |
|
u_char buf[8]; |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
|
|
init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
|
cgc->cmd[6] = s->copyright.layer_num; |
|
cgc->cmd[7] = s->type; |
|
cgc->cmd[8] = cgc->buflen >> 8; |
|
cgc->cmd[9] = cgc->buflen & 0xff; |
|
|
|
ret = cdo->generic_packet(cdi, cgc); |
|
if (ret) |
|
return ret; |
|
|
|
s->copyright.cpst = buf[4]; |
|
s->copyright.rmi = buf[5]; |
|
|
|
return 0; |
|
} |
|
|
|
static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s, |
|
struct packet_command *cgc) |
|
{ |
|
int ret, size; |
|
u_char *buf; |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
|
|
size = sizeof(s->disckey.value) + 4; |
|
|
|
buf = kmalloc(size, GFP_KERNEL); |
|
if (!buf) |
|
return -ENOMEM; |
|
|
|
init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
|
cgc->cmd[7] = s->type; |
|
cgc->cmd[8] = size >> 8; |
|
cgc->cmd[9] = size & 0xff; |
|
cgc->cmd[10] = s->disckey.agid << 6; |
|
|
|
ret = cdo->generic_packet(cdi, cgc); |
|
if (!ret) |
|
memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); |
|
|
|
kfree(buf); |
|
return ret; |
|
} |
|
|
|
static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, |
|
struct packet_command *cgc) |
|
{ |
|
int ret, size = 4 + 188; |
|
u_char *buf; |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
|
|
buf = kmalloc(size, GFP_KERNEL); |
|
if (!buf) |
|
return -ENOMEM; |
|
|
|
init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
|
cgc->cmd[7] = s->type; |
|
cgc->cmd[9] = cgc->buflen & 0xff; |
|
|
|
ret = cdo->generic_packet(cdi, cgc); |
|
if (ret) |
|
goto out; |
|
|
|
s->bca.len = buf[0] << 8 | buf[1]; |
|
if (s->bca.len < 12 || s->bca.len > 188) { |
|
cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n", |
|
s->bca.len); |
|
ret = -EIO; |
|
goto out; |
|
} |
|
memcpy(s->bca.value, &buf[4], s->bca.len); |
|
ret = 0; |
|
out: |
|
kfree(buf); |
|
return ret; |
|
} |
|
|
|
static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, |
|
struct packet_command *cgc) |
|
{ |
|
int ret = 0, size; |
|
u_char *buf; |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
|
|
size = sizeof(s->manufact.value) + 4; |
|
|
|
buf = kmalloc(size, GFP_KERNEL); |
|
if (!buf) |
|
return -ENOMEM; |
|
|
|
init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
|
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; |
|
cgc->cmd[7] = s->type; |
|
cgc->cmd[8] = size >> 8; |
|
cgc->cmd[9] = size & 0xff; |
|
|
|
ret = cdo->generic_packet(cdi, cgc); |
|
if (ret) |
|
goto out; |
|
|
|
s->manufact.len = buf[0] << 8 | buf[1]; |
|
if (s->manufact.len < 0) { |
|
cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n", |
|
s->manufact.len); |
|
ret = -EIO; |
|
} else { |
|
if (s->manufact.len > 2048) { |
|
cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d): truncating to 2048\n", |
|
s->manufact.len); |
|
s->manufact.len = 2048; |
|
} |
|
memcpy(s->manufact.value, &buf[4], s->manufact.len); |
|
} |
|
|
|
out: |
|
kfree(buf); |
|
return ret; |
|
} |
|
|
|
static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s, |
|
struct packet_command *cgc) |
|
{ |
|
switch (s->type) { |
|
case DVD_STRUCT_PHYSICAL: |
|
return dvd_read_physical(cdi, s, cgc); |
|
|
|
case DVD_STRUCT_COPYRIGHT: |
|
return dvd_read_copyright(cdi, s, cgc); |
|
|
|
case DVD_STRUCT_DISCKEY: |
|
return dvd_read_disckey(cdi, s, cgc); |
|
|
|
case DVD_STRUCT_BCA: |
|
return dvd_read_bca(cdi, s, cgc); |
|
|
|
case DVD_STRUCT_MANUFACT: |
|
return dvd_read_manufact(cdi, s, cgc); |
|
|
|
default: |
|
cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", |
|
s->type); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
int cdrom_mode_sense(struct cdrom_device_info *cdi, |
|
struct packet_command *cgc, |
|
int page_code, int page_control) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
|
|
memset(cgc->cmd, 0, sizeof(cgc->cmd)); |
|
|
|
cgc->cmd[0] = GPCMD_MODE_SENSE_10; |
|
cgc->cmd[2] = page_code | (page_control << 6); |
|
cgc->cmd[7] = cgc->buflen >> 8; |
|
cgc->cmd[8] = cgc->buflen & 0xff; |
|
cgc->data_direction = CGC_DATA_READ; |
|
return cdo->generic_packet(cdi, cgc); |
|
} |
|
|
|
int cdrom_mode_select(struct cdrom_device_info *cdi, |
|
struct packet_command *cgc) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
|
|
memset(cgc->cmd, 0, sizeof(cgc->cmd)); |
|
memset(cgc->buffer, 0, 2); |
|
cgc->cmd[0] = GPCMD_MODE_SELECT_10; |
|
cgc->cmd[1] = 0x10; /* PF */ |
|
cgc->cmd[7] = cgc->buflen >> 8; |
|
cgc->cmd[8] = cgc->buflen & 0xff; |
|
cgc->data_direction = CGC_DATA_WRITE; |
|
return cdo->generic_packet(cdi, cgc); |
|
} |
|
|
|
static int cdrom_read_subchannel(struct cdrom_device_info *cdi, |
|
struct cdrom_subchnl *subchnl, int mcn) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
struct packet_command cgc; |
|
char buffer[32]; |
|
int ret; |
|
|
|
init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); |
|
cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; |
|
cgc.cmd[1] = subchnl->cdsc_format;/* MSF or LBA addressing */ |
|
cgc.cmd[2] = 0x40; /* request subQ data */ |
|
cgc.cmd[3] = mcn ? 2 : 1; |
|
cgc.cmd[8] = 16; |
|
|
|
if ((ret = cdo->generic_packet(cdi, &cgc))) |
|
return ret; |
|
|
|
subchnl->cdsc_audiostatus = cgc.buffer[1]; |
|
subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; |
|
subchnl->cdsc_trk = cgc.buffer[6]; |
|
subchnl->cdsc_ind = cgc.buffer[7]; |
|
|
|
if (subchnl->cdsc_format == CDROM_LBA) { |
|
subchnl->cdsc_absaddr.lba = ((cgc.buffer[8] << 24) | |
|
(cgc.buffer[9] << 16) | |
|
(cgc.buffer[10] << 8) | |
|
(cgc.buffer[11])); |
|
subchnl->cdsc_reladdr.lba = ((cgc.buffer[12] << 24) | |
|
(cgc.buffer[13] << 16) | |
|
(cgc.buffer[14] << 8) | |
|
(cgc.buffer[15])); |
|
} else { |
|
subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; |
|
subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; |
|
subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; |
|
subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; |
|
subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; |
|
subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* Specific READ_10 interface |
|
*/ |
|
static int cdrom_read_cd(struct cdrom_device_info *cdi, |
|
struct packet_command *cgc, int lba, |
|
int blocksize, int nblocks) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
|
|
memset(&cgc->cmd, 0, sizeof(cgc->cmd)); |
|
cgc->cmd[0] = GPCMD_READ_10; |
|
cgc->cmd[2] = (lba >> 24) & 0xff; |
|
cgc->cmd[3] = (lba >> 16) & 0xff; |
|
cgc->cmd[4] = (lba >> 8) & 0xff; |
|
cgc->cmd[5] = lba & 0xff; |
|
cgc->cmd[6] = (nblocks >> 16) & 0xff; |
|
cgc->cmd[7] = (nblocks >> 8) & 0xff; |
|
cgc->cmd[8] = nblocks & 0xff; |
|
cgc->buflen = blocksize * nblocks; |
|
return cdo->generic_packet(cdi, cgc); |
|
} |
|
|
|
/* very generic interface for reading the various types of blocks */ |
|
static int cdrom_read_block(struct cdrom_device_info *cdi, |
|
struct packet_command *cgc, |
|
int lba, int nblocks, int format, int blksize) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
|
|
memset(&cgc->cmd, 0, sizeof(cgc->cmd)); |
|
cgc->cmd[0] = GPCMD_READ_CD; |
|
/* expected sector size - cdda,mode1,etc. */ |
|
cgc->cmd[1] = format << 2; |
|
/* starting address */ |
|
cgc->cmd[2] = (lba >> 24) & 0xff; |
|
cgc->cmd[3] = (lba >> 16) & 0xff; |
|
cgc->cmd[4] = (lba >> 8) & 0xff; |
|
cgc->cmd[5] = lba & 0xff; |
|
/* number of blocks */ |
|
cgc->cmd[6] = (nblocks >> 16) & 0xff; |
|
cgc->cmd[7] = (nblocks >> 8) & 0xff; |
|
cgc->cmd[8] = nblocks & 0xff; |
|
cgc->buflen = blksize * nblocks; |
|
|
|
/* set the header info returned */ |
|
switch (blksize) { |
|
case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; |
|
case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; |
|
case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; |
|
default : cgc->cmd[9] = 0x10; |
|
} |
|
|
|
return cdo->generic_packet(cdi, cgc); |
|
} |
|
|
|
static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, |
|
int lba, int nframes) |
|
{ |
|
struct packet_command cgc; |
|
int ret = 0; |
|
int nr; |
|
|
|
cdi->last_sense = 0; |
|
|
|
memset(&cgc, 0, sizeof(cgc)); |
|
|
|
/* |
|
* start with will ra.nframes size, back down if alloc fails |
|
*/ |
|
nr = nframes; |
|
do { |
|
cgc.buffer = kmalloc_array(nr, CD_FRAMESIZE_RAW, GFP_KERNEL); |
|
if (cgc.buffer) |
|
break; |
|
|
|
nr >>= 1; |
|
} while (nr); |
|
|
|
if (!nr) |
|
return -ENOMEM; |
|
|
|
cgc.data_direction = CGC_DATA_READ; |
|
while (nframes > 0) { |
|
if (nr > nframes) |
|
nr = nframes; |
|
|
|
ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); |
|
if (ret) |
|
break; |
|
if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { |
|
ret = -EFAULT; |
|
break; |
|
} |
|
ubuf += CD_FRAMESIZE_RAW * nr; |
|
nframes -= nr; |
|
lba += nr; |
|
} |
|
kfree(cgc.buffer); |
|
return ret; |
|
} |
|
|
|
static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, |
|
int lba, int nframes) |
|
{ |
|
int max_frames = (queue_max_sectors(cdi->disk->queue) << 9) / |
|
CD_FRAMESIZE_RAW; |
|
int nr, ret = 0; |
|
|
|
cdi->last_sense = 0; |
|
|
|
while (nframes) { |
|
if (cdi->cdda_method == CDDA_BPC_SINGLE) |
|
nr = 1; |
|
else |
|
nr = min(nframes, max_frames); |
|
|
|
ret = cdi->ops->read_cdda_bpc(cdi, ubuf, lba, nr, |
|
&cdi->last_sense); |
|
if (ret) |
|
break; |
|
|
|
nframes -= nr; |
|
lba += nr; |
|
ubuf += (nr * CD_FRAMESIZE_RAW); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, |
|
int lba, int nframes) |
|
{ |
|
int ret; |
|
|
|
if (cdi->cdda_method == CDDA_OLD) |
|
return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); |
|
|
|
retry: |
|
/* |
|
* for anything else than success and io error, we need to retry |
|
*/ |
|
ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); |
|
if (!ret || ret != -EIO) |
|
return ret; |
|
|
|
/* |
|
* I've seen drives get sense 4/8/3 udma crc errors on multi |
|
* frame dma, so drop to single frame dma if we need to |
|
*/ |
|
if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { |
|
pr_info("dropping to single frame dma\n"); |
|
cdi->cdda_method = CDDA_BPC_SINGLE; |
|
goto retry; |
|
} |
|
|
|
/* |
|
* so we have an io error of some sort with multi frame dma. if the |
|
* condition wasn't a hardware error |
|
* problems, not for any error |
|
*/ |
|
if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) |
|
return ret; |
|
|
|
pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense); |
|
cdi->cdda_method = CDDA_OLD; |
|
return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); |
|
} |
|
|
|
int cdrom_multisession(struct cdrom_device_info *cdi, |
|
struct cdrom_multisession *info) |
|
{ |
|
u8 requested_format; |
|
int ret; |
|
|
|
if (!(cdi->ops->capability & CDC_MULTI_SESSION)) |
|
return -ENOSYS; |
|
|
|
requested_format = info->addr_format; |
|
if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) |
|
return -EINVAL; |
|
info->addr_format = CDROM_LBA; |
|
|
|
ret = cdi->ops->get_last_session(cdi, info); |
|
if (!ret) |
|
sanitize_format(&info->addr, &info->addr_format, |
|
requested_format); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(cdrom_multisession); |
|
|
|
static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, |
|
void __user *argp) |
|
{ |
|
struct cdrom_multisession info; |
|
int ret; |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); |
|
|
|
if (copy_from_user(&info, argp, sizeof(info))) |
|
return -EFAULT; |
|
ret = cdrom_multisession(cdi, &info); |
|
if (ret) |
|
return ret; |
|
if (copy_to_user(argp, &info, sizeof(info))) |
|
return -EFAULT; |
|
|
|
cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); |
|
return ret; |
|
} |
|
|
|
static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n"); |
|
|
|
if (!CDROM_CAN(CDC_OPEN_TRAY)) |
|
return -ENOSYS; |
|
if (cdi->use_count != 1 || cdi->keeplocked) |
|
return -EBUSY; |
|
if (CDROM_CAN(CDC_LOCK)) { |
|
int ret = cdi->ops->lock_door(cdi, 0); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
return cdi->ops->tray_move(cdi, 1); |
|
} |
|
|
|
static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); |
|
|
|
if (!CDROM_CAN(CDC_CLOSE_TRAY)) |
|
return -ENOSYS; |
|
return cdi->ops->tray_move(cdi, 0); |
|
} |
|
|
|
static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, |
|
unsigned long arg) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); |
|
|
|
if (!CDROM_CAN(CDC_OPEN_TRAY)) |
|
return -ENOSYS; |
|
if (cdi->keeplocked) |
|
return -EBUSY; |
|
|
|
cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); |
|
if (arg) |
|
cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; |
|
return 0; |
|
} |
|
|
|
static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, |
|
unsigned long arg) |
|
{ |
|
struct cdrom_changer_info *info; |
|
int ret; |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); |
|
|
|
if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
|
return -ENOSYS; |
|
|
|
/* cannot select disc or select current disc */ |
|
if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) |
|
return media_changed(cdi, 1); |
|
|
|
if (arg >= cdi->capacity) |
|
return -EINVAL; |
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL); |
|
if (!info) |
|
return -ENOMEM; |
|
|
|
ret = cdrom_read_mech_status(cdi, info); |
|
if (!ret) |
|
ret = info->slots[arg].change; |
|
kfree(info); |
|
return ret; |
|
} |
|
|
|
static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, |
|
unsigned long arg) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); |
|
|
|
/* |
|
* Options need to be in sync with capability. |
|
* Too late for that, so we have to check each one separately. |
|
*/ |
|
switch (arg) { |
|
case CDO_USE_FFLAGS: |
|
case CDO_CHECK_TYPE: |
|
break; |
|
case CDO_LOCK: |
|
if (!CDROM_CAN(CDC_LOCK)) |
|
return -ENOSYS; |
|
break; |
|
case 0: |
|
return cdi->options; |
|
/* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ |
|
default: |
|
if (!CDROM_CAN(arg)) |
|
return -ENOSYS; |
|
} |
|
cdi->options |= (int) arg; |
|
return cdi->options; |
|
} |
|
|
|
static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, |
|
unsigned long arg) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); |
|
|
|
cdi->options &= ~(int) arg; |
|
return cdi->options; |
|
} |
|
|
|
static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, |
|
unsigned long arg) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); |
|
|
|
if (!CDROM_CAN(CDC_SELECT_SPEED)) |
|
return -ENOSYS; |
|
return cdi->ops->select_speed(cdi, arg); |
|
} |
|
|
|
static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, |
|
unsigned long arg) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); |
|
|
|
if (!CDROM_CAN(CDC_SELECT_DISC)) |
|
return -ENOSYS; |
|
|
|
if (arg != CDSL_CURRENT && arg != CDSL_NONE) { |
|
if (arg >= cdi->capacity) |
|
return -EINVAL; |
|
} |
|
|
|
/* |
|
* ->select_disc is a hook to allow a driver-specific way of |
|
* seleting disc. However, since there is no equivalent hook for |
|
* cdrom_slot_status this may not actually be useful... |
|
*/ |
|
if (cdi->ops->select_disc) |
|
return cdi->ops->select_disc(cdi, arg); |
|
|
|
cd_dbg(CD_CHANGER, "Using generic cdrom_select_disc()\n"); |
|
return cdrom_select_disc(cdi, arg); |
|
} |
|
|
|
static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, |
|
struct block_device *bdev) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n"); |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
return -EACCES; |
|
if (!CDROM_CAN(CDC_RESET)) |
|
return -ENOSYS; |
|
invalidate_bdev(bdev); |
|
return cdi->ops->reset(cdi); |
|
} |
|
|
|
static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, |
|
unsigned long arg) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl"); |
|
|
|
if (!CDROM_CAN(CDC_LOCK)) |
|
return -EDRIVE_CANT_DO_THIS; |
|
|
|
cdi->keeplocked = arg ? 1 : 0; |
|
|
|
/* |
|
* Don't unlock the door on multiple opens by default, but allow |
|
* root to do so. |
|
*/ |
|
if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) |
|
return -EBUSY; |
|
return cdi->ops->lock_door(cdi, arg); |
|
} |
|
|
|
static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, |
|
unsigned long arg) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis"); |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
return -EACCES; |
|
debug = arg ? 1 : 0; |
|
return debug; |
|
} |
|
|
|
static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); |
|
return (cdi->ops->capability & ~cdi->mask); |
|
} |
|
|
|
/* |
|
* The following function is implemented, although very few audio |
|
* discs give Universal Product Code information, which should just be |
|
* the Medium Catalog Number on the box. Note, that the way the code |
|
* is written on the CD is /not/ uniform across all discs! |
|
*/ |
|
static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, |
|
void __user *argp) |
|
{ |
|
struct cdrom_mcn mcn; |
|
int ret; |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); |
|
|
|
if (!(cdi->ops->capability & CDC_MCN)) |
|
return -ENOSYS; |
|
ret = cdi->ops->get_mcn(cdi, &mcn); |
|
if (ret) |
|
return ret; |
|
|
|
if (copy_to_user(argp, &mcn, sizeof(mcn))) |
|
return -EFAULT; |
|
cd_dbg(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); |
|
return 0; |
|
} |
|
|
|
static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, |
|
unsigned long arg) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); |
|
|
|
if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) |
|
return -ENOSYS; |
|
if (!CDROM_CAN(CDC_SELECT_DISC) || |
|
(arg == CDSL_CURRENT || arg == CDSL_NONE)) |
|
return cdi->ops->drive_status(cdi, CDSL_CURRENT); |
|
if (arg >= cdi->capacity) |
|
return -EINVAL; |
|
return cdrom_slot_status(cdi, arg); |
|
} |
|
|
|
/* |
|
* Ok, this is where problems start. The current interface for the |
|
* CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that |
|
* CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this |
|
* is often the case, it is also very common for CDs to have some tracks |
|
* with data, and some tracks with audio. Just because I feel like it, |
|
* I declare the following to be the best way to cope. If the CD has ANY |
|
* data tracks on it, it will be returned as a data CD. If it has any XA |
|
* tracks, I will return it as that. Now I could simplify this interface |
|
* by combining these returns with the above, but this more clearly |
|
* demonstrates the problem with the current interface. Too bad this |
|
* wasn't designed to use bitmasks... -Erik |
|
* |
|
* Well, now we have the option CDS_MIXED: a mixed-type CD. |
|
* User level programmers might feel the ioctl is not very useful. |
|
* ---david |
|
*/ |
|
static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) |
|
{ |
|
tracktype tracks; |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); |
|
|
|
cdrom_count_tracks(cdi, &tracks); |
|
if (tracks.error) |
|
return tracks.error; |
|
|
|
/* Policy mode on */ |
|
if (tracks.audio > 0) { |
|
if (!tracks.data && !tracks.cdi && !tracks.xa) |
|
return CDS_AUDIO; |
|
else |
|
return CDS_MIXED; |
|
} |
|
|
|
if (tracks.cdi > 0) |
|
return CDS_XA_2_2; |
|
if (tracks.xa > 0) |
|
return CDS_XA_2_1; |
|
if (tracks.data > 0) |
|
return CDS_DATA_1; |
|
/* Policy mode off */ |
|
|
|
cd_dbg(CD_WARNING, "This disc doesn't have any tracks I recognize!\n"); |
|
return CDS_NO_INFO; |
|
} |
|
|
|
static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) |
|
{ |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); |
|
return cdi->capacity; |
|
} |
|
|
|
static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, |
|
void __user *argp) |
|
{ |
|
struct cdrom_subchnl q; |
|
u8 requested, back; |
|
int ret; |
|
|
|
/* cd_dbg(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ |
|
|
|
if (copy_from_user(&q, argp, sizeof(q))) |
|
return -EFAULT; |
|
|
|
requested = q.cdsc_format; |
|
if (requested != CDROM_MSF && requested != CDROM_LBA) |
|
return -EINVAL; |
|
q.cdsc_format = CDROM_MSF; |
|
|
|
ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); |
|
if (ret) |
|
return ret; |
|
|
|
back = q.cdsc_format; /* local copy */ |
|
sanitize_format(&q.cdsc_absaddr, &back, requested); |
|
sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); |
|
|
|
if (copy_to_user(argp, &q, sizeof(q))) |
|
return -EFAULT; |
|
/* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
|
return 0; |
|
} |
|
|
|
static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, |
|
void __user *argp) |
|
{ |
|
struct cdrom_tochdr header; |
|
int ret; |
|
|
|
/* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ |
|
|
|
if (copy_from_user(&header, argp, sizeof(header))) |
|
return -EFAULT; |
|
|
|
ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); |
|
if (ret) |
|
return ret; |
|
|
|
if (copy_to_user(argp, &header, sizeof(header))) |
|
return -EFAULT; |
|
/* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ |
|
return 0; |
|
} |
|
|
|
int cdrom_read_tocentry(struct cdrom_device_info *cdi, |
|
struct cdrom_tocentry *entry) |
|
{ |
|
u8 requested_format = entry->cdte_format; |
|
int ret; |
|
|
|
if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) |
|
return -EINVAL; |
|
|
|
/* make interface to low-level uniform */ |
|
entry->cdte_format = CDROM_MSF; |
|
ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, entry); |
|
if (!ret) |
|
sanitize_format(&entry->cdte_addr, &entry->cdte_format, |
|
requested_format); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(cdrom_read_tocentry); |
|
|
|
static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, |
|
void __user *argp) |
|
{ |
|
struct cdrom_tocentry entry; |
|
int ret; |
|
|
|
if (copy_from_user(&entry, argp, sizeof(entry))) |
|
return -EFAULT; |
|
ret = cdrom_read_tocentry(cdi, &entry); |
|
if (!ret && copy_to_user(argp, &entry, sizeof(entry))) |
|
return -EFAULT; |
|
return ret; |
|
} |
|
|
|
static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, |
|
void __user *argp) |
|
{ |
|
struct cdrom_msf msf; |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
|
return -ENOSYS; |
|
if (copy_from_user(&msf, argp, sizeof(msf))) |
|
return -EFAULT; |
|
return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); |
|
} |
|
|
|
static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, |
|
void __user *argp) |
|
{ |
|
struct cdrom_ti ti; |
|
int ret; |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); |
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
|
return -ENOSYS; |
|
if (copy_from_user(&ti, argp, sizeof(ti))) |
|
return -EFAULT; |
|
|
|
ret = check_for_audio_disc(cdi, cdi->ops); |
|
if (ret) |
|
return ret; |
|
return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); |
|
} |
|
static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, |
|
void __user *argp) |
|
{ |
|
struct cdrom_volctrl volume; |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); |
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
|
return -ENOSYS; |
|
if (copy_from_user(&volume, argp, sizeof(volume))) |
|
return -EFAULT; |
|
return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); |
|
} |
|
|
|
static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, |
|
void __user *argp) |
|
{ |
|
struct cdrom_volctrl volume; |
|
int ret; |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); |
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
|
return -ENOSYS; |
|
|
|
ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); |
|
if (ret) |
|
return ret; |
|
|
|
if (copy_to_user(argp, &volume, sizeof(volume))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, |
|
unsigned int cmd) |
|
{ |
|
int ret; |
|
|
|
cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); |
|
|
|
if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
|
return -ENOSYS; |
|
ret = check_for_audio_disc(cdi, cdi->ops); |
|
if (ret) |
|
return ret; |
|
return cdi->ops->audio_ioctl(cdi, cmd, NULL); |
|
} |
|
|
|
/* |
|
* Required when we need to use READ_10 to issue other than 2048 block |
|
* reads |
|
*/ |
|
static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
struct packet_command cgc; |
|
struct modesel_head mh; |
|
|
|
memset(&mh, 0, sizeof(mh)); |
|
mh.block_desc_length = 0x08; |
|
mh.block_length_med = (size >> 8) & 0xff; |
|
mh.block_length_lo = size & 0xff; |
|
|
|
memset(&cgc, 0, sizeof(cgc)); |
|
cgc.cmd[0] = 0x15; |
|
cgc.cmd[1] = 1 << 4; |
|
cgc.cmd[4] = 12; |
|
cgc.buflen = sizeof(mh); |
|
cgc.buffer = (char *) &mh; |
|
cgc.data_direction = CGC_DATA_WRITE; |
|
mh.block_desc_length = 0x08; |
|
mh.block_length_med = (size >> 8) & 0xff; |
|
mh.block_length_lo = size & 0xff; |
|
|
|
return cdo->generic_packet(cdi, &cgc); |
|
} |
|
|
|
static int cdrom_get_track_info(struct cdrom_device_info *cdi, |
|
__u16 track, __u8 type, track_information *ti) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
struct packet_command cgc; |
|
int ret, buflen; |
|
|
|
init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); |
|
cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; |
|
cgc.cmd[1] = type & 3; |
|
cgc.cmd[4] = (track & 0xff00) >> 8; |
|
cgc.cmd[5] = track & 0xff; |
|
cgc.cmd[8] = 8; |
|
cgc.quiet = 1; |
|
|
|
ret = cdo->generic_packet(cdi, &cgc); |
|
if (ret) |
|
return ret; |
|
|
|
buflen = be16_to_cpu(ti->track_information_length) + |
|
sizeof(ti->track_information_length); |
|
|
|
if (buflen > sizeof(track_information)) |
|
buflen = sizeof(track_information); |
|
|
|
cgc.cmd[8] = cgc.buflen = buflen; |
|
ret = cdo->generic_packet(cdi, &cgc); |
|
if (ret) |
|
return ret; |
|
|
|
/* return actual fill size */ |
|
return buflen; |
|
} |
|
|
|
/* return the last written block on the CD-R media. this is for the udf |
|
file system. */ |
|
int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) |
|
{ |
|
struct cdrom_tocentry toc; |
|
disc_information di; |
|
track_information ti; |
|
__u32 last_track; |
|
int ret = -1, ti_size; |
|
|
|
if (!CDROM_CAN(CDC_GENERIC_PACKET)) |
|
goto use_toc; |
|
|
|
ret = cdrom_get_disc_info(cdi, &di); |
|
if (ret < (int)(offsetof(typeof(di), last_track_lsb) |
|
+ sizeof(di.last_track_lsb))) |
|
goto use_toc; |
|
|
|
/* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ |
|
last_track = (di.last_track_msb << 8) | di.last_track_lsb; |
|
ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
|
if (ti_size < (int)offsetof(typeof(ti), track_start)) |
|
goto use_toc; |
|
|
|
/* if this track is blank, try the previous. */ |
|
if (ti.blank) { |
|
if (last_track == 1) |
|
goto use_toc; |
|
last_track--; |
|
ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
|
} |
|
|
|
if (ti_size < (int)(offsetof(typeof(ti), track_size) |
|
+ sizeof(ti.track_size))) |
|
goto use_toc; |
|
|
|
/* if last recorded field is valid, return it. */ |
|
if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) |
|
+ sizeof(ti.last_rec_address))) { |
|
*last_written = be32_to_cpu(ti.last_rec_address); |
|
} else { |
|
/* make it up instead */ |
|
*last_written = be32_to_cpu(ti.track_start) + |
|
be32_to_cpu(ti.track_size); |
|
if (ti.free_blocks) |
|
*last_written -= (be32_to_cpu(ti.free_blocks) + 7); |
|
} |
|
return 0; |
|
|
|
/* this is where we end up if the drive either can't do a |
|
GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if |
|
it doesn't give enough information or fails. then we return |
|
the toc contents. */ |
|
use_toc: |
|
if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
|
return -ENOSYS; |
|
|
|
toc.cdte_format = CDROM_MSF; |
|
toc.cdte_track = CDROM_LEADOUT; |
|
if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) |
|
return ret; |
|
sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); |
|
*last_written = toc.cdte_addr.lba; |
|
return 0; |
|
} |
|
|
|
/* return the next writable block. also for udf file system. */ |
|
static int cdrom_get_next_writable(struct cdrom_device_info *cdi, |
|
long *next_writable) |
|
{ |
|
disc_information di; |
|
track_information ti; |
|
__u16 last_track; |
|
int ret, ti_size; |
|
|
|
if (!CDROM_CAN(CDC_GENERIC_PACKET)) |
|
goto use_last_written; |
|
|
|
ret = cdrom_get_disc_info(cdi, &di); |
|
if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) |
|
+ sizeof(di.last_track_lsb)) |
|
goto use_last_written; |
|
|
|
/* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ |
|
last_track = (di.last_track_msb << 8) | di.last_track_lsb; |
|
ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
|
if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) |
|
goto use_last_written; |
|
|
|
/* if this track is blank, try the previous. */ |
|
if (ti.blank) { |
|
if (last_track == 1) |
|
goto use_last_written; |
|
last_track--; |
|
ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); |
|
if (ti_size < 0) |
|
goto use_last_written; |
|
} |
|
|
|
/* if next recordable address field is valid, use it. */ |
|
if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) |
|
+ sizeof(ti.next_writable)) { |
|
*next_writable = be32_to_cpu(ti.next_writable); |
|
return 0; |
|
} |
|
|
|
use_last_written: |
|
ret = cdrom_get_last_written(cdi, next_writable); |
|
if (ret) { |
|
*next_writable = 0; |
|
return ret; |
|
} else { |
|
*next_writable += 7; |
|
return 0; |
|
} |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, |
|
void __user *arg, |
|
struct packet_command *cgc, |
|
int cmd) |
|
{ |
|
struct scsi_sense_hdr sshdr; |
|
struct cdrom_msf msf; |
|
int blocksize = 0, format = 0, lba; |
|
int ret; |
|
|
|
switch (cmd) { |
|
case CDROMREADRAW: |
|
blocksize = CD_FRAMESIZE_RAW; |
|
break; |
|
case CDROMREADMODE1: |
|
blocksize = CD_FRAMESIZE; |
|
format = 2; |
|
break; |
|
case CDROMREADMODE2: |
|
blocksize = CD_FRAMESIZE_RAW0; |
|
break; |
|
} |
|
if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) |
|
return -EFAULT; |
|
lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0); |
|
/* FIXME: we need upper bound checking, too!! */ |
|
if (lba < 0) |
|
return -EINVAL; |
|
|
|
cgc->buffer = kzalloc(blocksize, GFP_KERNEL); |
|
if (cgc->buffer == NULL) |
|
return -ENOMEM; |
|
|
|
memset(&sshdr, 0, sizeof(sshdr)); |
|
cgc->sshdr = &sshdr; |
|
cgc->data_direction = CGC_DATA_READ; |
|
ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize); |
|
if (ret && sshdr.sense_key == 0x05 && |
|
sshdr.asc == 0x20 && |
|
sshdr.ascq == 0x00) { |
|
/* |
|
* SCSI-II devices are not required to support |
|
* READ_CD, so let's try switching block size |
|
*/ |
|
if (blocksize != CD_FRAMESIZE) { |
|
ret = cdrom_switch_blocksize(cdi, blocksize); |
|
if (ret) |
|
goto out; |
|
} |
|
cgc->sshdr = NULL; |
|
ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1); |
|
if (blocksize != CD_FRAMESIZE) |
|
ret |= cdrom_switch_blocksize(cdi, CD_FRAMESIZE); |
|
} |
|
if (!ret && copy_to_user(arg, cgc->buffer, blocksize)) |
|
ret = -EFAULT; |
|
out: |
|
kfree(cgc->buffer); |
|
return ret; |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, |
|
void __user *arg) |
|
{ |
|
struct cdrom_read_audio ra; |
|
int lba; |
|
|
|
#ifdef CONFIG_COMPAT |
|
if (in_compat_syscall()) { |
|
struct compat_cdrom_read_audio { |
|
union cdrom_addr addr; |
|
u8 addr_format; |
|
compat_int_t nframes; |
|
compat_caddr_t buf; |
|
} ra32; |
|
|
|
if (copy_from_user(&ra32, arg, sizeof(ra32))) |
|
return -EFAULT; |
|
|
|
ra = (struct cdrom_read_audio) { |
|
.addr = ra32.addr, |
|
.addr_format = ra32.addr_format, |
|
.nframes = ra32.nframes, |
|
.buf = compat_ptr(ra32.buf), |
|
}; |
|
} else |
|
#endif |
|
{ |
|
if (copy_from_user(&ra, (struct cdrom_read_audio __user *)arg, |
|
sizeof(ra))) |
|
return -EFAULT; |
|
} |
|
|
|
if (ra.addr_format == CDROM_MSF) |
|
lba = msf_to_lba(ra.addr.msf.minute, |
|
ra.addr.msf.second, |
|
ra.addr.msf.frame); |
|
else if (ra.addr_format == CDROM_LBA) |
|
lba = ra.addr.lba; |
|
else |
|
return -EINVAL; |
|
|
|
/* FIXME: we need upper bound checking, too!! */ |
|
if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) |
|
return -EINVAL; |
|
|
|
return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi, |
|
void __user *arg) |
|
{ |
|
int ret; |
|
struct cdrom_subchnl q; |
|
u_char requested, back; |
|
if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q))) |
|
return -EFAULT; |
|
requested = q.cdsc_format; |
|
if (!((requested == CDROM_MSF) || |
|
(requested == CDROM_LBA))) |
|
return -EINVAL; |
|
|
|
ret = cdrom_read_subchannel(cdi, &q, 0); |
|
if (ret) |
|
return ret; |
|
back = q.cdsc_format; /* local copy */ |
|
sanitize_format(&q.cdsc_absaddr, &back, requested); |
|
sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); |
|
if (copy_to_user((struct cdrom_subchnl __user *)arg, &q, sizeof(q))) |
|
return -EFAULT; |
|
/* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
|
return 0; |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi, |
|
void __user *arg, |
|
struct packet_command *cgc) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
struct cdrom_msf msf; |
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
|
if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) |
|
return -EFAULT; |
|
cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
|
cgc->cmd[3] = msf.cdmsf_min0; |
|
cgc->cmd[4] = msf.cdmsf_sec0; |
|
cgc->cmd[5] = msf.cdmsf_frame0; |
|
cgc->cmd[6] = msf.cdmsf_min1; |
|
cgc->cmd[7] = msf.cdmsf_sec1; |
|
cgc->cmd[8] = msf.cdmsf_frame1; |
|
cgc->data_direction = CGC_DATA_NONE; |
|
return cdo->generic_packet(cdi, cgc); |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, |
|
void __user *arg, |
|
struct packet_command *cgc) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
struct cdrom_blk blk; |
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); |
|
if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk))) |
|
return -EFAULT; |
|
cgc->cmd[0] = GPCMD_PLAY_AUDIO_10; |
|
cgc->cmd[2] = (blk.from >> 24) & 0xff; |
|
cgc->cmd[3] = (blk.from >> 16) & 0xff; |
|
cgc->cmd[4] = (blk.from >> 8) & 0xff; |
|
cgc->cmd[5] = blk.from & 0xff; |
|
cgc->cmd[7] = (blk.len >> 8) & 0xff; |
|
cgc->cmd[8] = blk.len & 0xff; |
|
cgc->data_direction = CGC_DATA_NONE; |
|
return cdo->generic_packet(cdi, cgc); |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, |
|
void __user *arg, |
|
struct packet_command *cgc, |
|
unsigned int cmd) |
|
{ |
|
struct cdrom_volctrl volctrl; |
|
unsigned char buffer[32]; |
|
char mask[sizeof(buffer)]; |
|
unsigned short offset; |
|
int ret; |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n"); |
|
|
|
if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg, |
|
sizeof(volctrl))) |
|
return -EFAULT; |
|
|
|
cgc->buffer = buffer; |
|
cgc->buflen = 24; |
|
ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0); |
|
if (ret) |
|
return ret; |
|
|
|
/* originally the code depended on buffer[1] to determine |
|
how much data is available for transfer. buffer[1] is |
|
unfortunately ambigious and the only reliable way seem |
|
to be to simply skip over the block descriptor... */ |
|
offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6)); |
|
|
|
if (offset + 16 > sizeof(buffer)) |
|
return -E2BIG; |
|
|
|
if (offset + 16 > cgc->buflen) { |
|
cgc->buflen = offset + 16; |
|
ret = cdrom_mode_sense(cdi, cgc, |
|
GPMODE_AUDIO_CTL_PAGE, 0); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
/* sanity check */ |
|
if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || |
|
buffer[offset + 1] < 14) |
|
return -EINVAL; |
|
|
|
/* now we have the current volume settings. if it was only |
|
a CDROMVOLREAD, return these values */ |
|
if (cmd == CDROMVOLREAD) { |
|
volctrl.channel0 = buffer[offset+9]; |
|
volctrl.channel1 = buffer[offset+11]; |
|
volctrl.channel2 = buffer[offset+13]; |
|
volctrl.channel3 = buffer[offset+15]; |
|
if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl, |
|
sizeof(volctrl))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
/* get the volume mask */ |
|
cgc->buffer = mask; |
|
ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1); |
|
if (ret) |
|
return ret; |
|
|
|
buffer[offset + 9] = volctrl.channel0 & mask[offset + 9]; |
|
buffer[offset + 11] = volctrl.channel1 & mask[offset + 11]; |
|
buffer[offset + 13] = volctrl.channel2 & mask[offset + 13]; |
|
buffer[offset + 15] = volctrl.channel3 & mask[offset + 15]; |
|
|
|
/* set volume */ |
|
cgc->buffer = buffer + offset - 8; |
|
memset(cgc->buffer, 0, 8); |
|
return cdrom_mode_select(cdi, cgc); |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, |
|
struct packet_command *cgc, |
|
int cmd) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); |
|
cgc->cmd[0] = GPCMD_START_STOP_UNIT; |
|
cgc->cmd[1] = 1; |
|
cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0; |
|
cgc->data_direction = CGC_DATA_NONE; |
|
return cdo->generic_packet(cdi, cgc); |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, |
|
struct packet_command *cgc, |
|
int cmd) |
|
{ |
|
const struct cdrom_device_ops *cdo = cdi->ops; |
|
cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); |
|
cgc->cmd[0] = GPCMD_PAUSE_RESUME; |
|
cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; |
|
cgc->data_direction = CGC_DATA_NONE; |
|
return cdo->generic_packet(cdi, cgc); |
|
} |
|
|
|
static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, |
|
void __user *arg, |
|
struct packet_command *cgc) |
|
{ |
|
int ret; |
|
dvd_struct *s; |
|
int size = sizeof(dvd_struct); |
|
|
|
if (!CDROM_CAN(CDC_DVD)) |
|
return -ENOSYS; |
|
|
|
s = memdup_user(arg, size); |
|
if (IS_ERR(s)) |
|
return PTR_ERR(s); |
|
|
|
cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); |
|
|
|
ret = dvd_read_struct(cdi, s, cgc); |
|
if (ret) |
|
goto out; |
|
|
|
if (copy_to_user(arg, s, size)) |
|
ret = -EFAULT; |
|
out: |
|
kfree(s); |
|
return ret; |
|
} |
|
|
|
static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi, |
|
void __user *arg) |
|
{ |
|
int ret; |
|
dvd_authinfo ai; |
|
if (!CDROM_CAN(CDC_DVD)) |
|
return -ENOSYS; |
|
cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n"); |
|
if (copy_from_user(&ai, (dvd_authinfo __user *)arg, sizeof(ai))) |
|
return -EFAULT; |
|
ret = dvd_do_auth(cdi, &ai); |
|
if (ret) |
|
return ret; |
|
if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi, |
|
void __user *arg) |
|
{ |
|
int ret; |
|
long next = 0; |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); |
|
ret = cdrom_get_next_writable(cdi, &next); |
|
if (ret) |
|
return ret; |
|
if (copy_to_user((long __user *)arg, &next, sizeof(next))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi, |
|
void __user *arg) |
|
{ |
|
int ret; |
|
long last = 0; |
|
cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); |
|
ret = cdrom_get_last_written(cdi, &last); |
|
if (ret) |
|
return ret; |
|
if (in_compat_syscall()) |
|
return put_user(last, (__s32 __user *)arg); |
|
|
|
return put_user(last, (long __user *)arg); |
|
} |
|
|
|
static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, |
|
unsigned long arg) |
|
{ |
|
struct packet_command cgc; |
|
void __user *userptr = (void __user *)arg; |
|
|
|
memset(&cgc, 0, sizeof(cgc)); |
|
|
|
/* build a unified command and queue it through |
|
cdo->generic_packet() */ |
|
switch (cmd) { |
|
case CDROMREADRAW: |
|
case CDROMREADMODE1: |
|
case CDROMREADMODE2: |
|
return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd); |
|
case CDROMREADAUDIO: |
|
return mmc_ioctl_cdrom_read_audio(cdi, userptr); |
|
case CDROMSUBCHNL: |
|
return mmc_ioctl_cdrom_subchannel(cdi, userptr); |
|
case CDROMPLAYMSF: |
|
return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc); |
|
case CDROMPLAYBLK: |
|
return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc); |
|
case CDROMVOLCTRL: |
|
case CDROMVOLREAD: |
|
return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd); |
|
case CDROMSTART: |
|
case CDROMSTOP: |
|
return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd); |
|
case CDROMPAUSE: |
|
case CDROMRESUME: |
|
return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd); |
|
case DVD_READ_STRUCT: |
|
return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc); |
|
case DVD_AUTH: |
|
return mmc_ioctl_dvd_auth(cdi, userptr); |
|
case CDROM_NEXT_WRITABLE: |
|
return mmc_ioctl_cdrom_next_writable(cdi, userptr); |
|
case CDROM_LAST_WRITTEN: |
|
return mmc_ioctl_cdrom_last_written(cdi, userptr); |
|
} |
|
|
|
return -ENOTTY; |
|
} |
|
|
|
/* |
|
* Just about every imaginable ioctl is supported in the Uniform layer |
|
* these days. |
|
* ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). |
|
*/ |
|
int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, |
|
fmode_t mode, unsigned int cmd, unsigned long arg) |
|
{ |
|
void __user *argp = (void __user *)arg; |
|
int ret; |
|
|
|
switch (cmd) { |
|
case CDROMMULTISESSION: |
|
return cdrom_ioctl_multisession(cdi, argp); |
|
case CDROMEJECT: |
|
return cdrom_ioctl_eject(cdi); |
|
case CDROMCLOSETRAY: |
|
return cdrom_ioctl_closetray(cdi); |
|
case CDROMEJECT_SW: |
|
return cdrom_ioctl_eject_sw(cdi, arg); |
|
case CDROM_MEDIA_CHANGED: |
|
return cdrom_ioctl_media_changed(cdi, arg); |
|
case CDROM_SET_OPTIONS: |
|
return cdrom_ioctl_set_options(cdi, arg); |
|
case CDROM_CLEAR_OPTIONS: |
|
return cdrom_ioctl_clear_options(cdi, arg); |
|
case CDROM_SELECT_SPEED: |
|
return cdrom_ioctl_select_speed(cdi, arg); |
|
case CDROM_SELECT_DISC: |
|
return cdrom_ioctl_select_disc(cdi, arg); |
|
case CDROMRESET: |
|
return cdrom_ioctl_reset(cdi, bdev); |
|
case CDROM_LOCKDOOR: |
|
return cdrom_ioctl_lock_door(cdi, arg); |
|
case CDROM_DEBUG: |
|
return cdrom_ioctl_debug(cdi, arg); |
|
case CDROM_GET_CAPABILITY: |
|
return cdrom_ioctl_get_capability(cdi); |
|
case CDROM_GET_MCN: |
|
return cdrom_ioctl_get_mcn(cdi, argp); |
|
case CDROM_DRIVE_STATUS: |
|
return cdrom_ioctl_drive_status(cdi, arg); |
|
case CDROM_DISC_STATUS: |
|
return cdrom_ioctl_disc_status(cdi); |
|
case CDROM_CHANGER_NSLOTS: |
|
return cdrom_ioctl_changer_nslots(cdi); |
|
} |
|
|
|
/* |
|
* Use the ioctls that are implemented through the generic_packet() |
|
* interface. this may look at bit funny, but if -ENOTTY is |
|
* returned that particular ioctl is not implemented and we |
|
* let it go through the device specific ones. |
|
*/ |
|
if (CDROM_CAN(CDC_GENERIC_PACKET)) { |
|
ret = mmc_ioctl(cdi, cmd, arg); |
|
if (ret != -ENOTTY) |
|
return ret; |
|
} |
|
|
|
/* |
|
* Note: most of the cd_dbg() calls are commented out here, |
|
* because they fill up the sys log when CD players poll |
|
* the drive. |
|
*/ |
|
switch (cmd) { |
|
case CDROMSUBCHNL: |
|
return cdrom_ioctl_get_subchnl(cdi, argp); |
|
case CDROMREADTOCHDR: |
|
return cdrom_ioctl_read_tochdr(cdi, argp); |
|
case CDROMREADTOCENTRY: |
|
return cdrom_ioctl_read_tocentry(cdi, argp); |
|
case CDROMPLAYMSF: |
|
return cdrom_ioctl_play_msf(cdi, argp); |
|
case CDROMPLAYTRKIND: |
|
return cdrom_ioctl_play_trkind(cdi, argp); |
|
case CDROMVOLCTRL: |
|
return cdrom_ioctl_volctrl(cdi, argp); |
|
case CDROMVOLREAD: |
|
return cdrom_ioctl_volread(cdi, argp); |
|
case CDROMSTART: |
|
case CDROMSTOP: |
|
case CDROMPAUSE: |
|
case CDROMRESUME: |
|
return cdrom_ioctl_audioctl(cdi, cmd); |
|
} |
|
|
|
return -ENOSYS; |
|
} |
|
|
|
EXPORT_SYMBOL(cdrom_get_last_written); |
|
EXPORT_SYMBOL(register_cdrom); |
|
EXPORT_SYMBOL(unregister_cdrom); |
|
EXPORT_SYMBOL(cdrom_open); |
|
EXPORT_SYMBOL(cdrom_release); |
|
EXPORT_SYMBOL(cdrom_ioctl); |
|
EXPORT_SYMBOL(cdrom_number_of_slots); |
|
EXPORT_SYMBOL(cdrom_mode_select); |
|
EXPORT_SYMBOL(cdrom_mode_sense); |
|
EXPORT_SYMBOL(init_cdrom_command); |
|
EXPORT_SYMBOL(cdrom_get_media_event); |
|
|
|
#ifdef CONFIG_SYSCTL |
|
|
|
#define CDROM_STR_SIZE 1000 |
|
|
|
static struct cdrom_sysctl_settings { |
|
char info[CDROM_STR_SIZE]; /* general info */ |
|
int autoclose; /* close tray upon mount, etc */ |
|
int autoeject; /* eject on umount */ |
|
int debug; /* turn on debugging messages */ |
|
int lock; /* lock the door on device open */ |
|
int check; /* check media type */ |
|
} cdrom_sysctl_settings; |
|
|
|
enum cdrom_print_option { |
|
CTL_NAME, |
|
CTL_SPEED, |
|
CTL_SLOTS, |
|
CTL_CAPABILITY |
|
}; |
|
|
|
static int cdrom_print_info(const char *header, int val, char *info, |
|
int *pos, enum cdrom_print_option option) |
|
{ |
|
const int max_size = sizeof(cdrom_sysctl_settings.info); |
|
struct cdrom_device_info *cdi; |
|
int ret; |
|
|
|
ret = scnprintf(info + *pos, max_size - *pos, header); |
|
if (!ret) |
|
return 1; |
|
|
|
*pos += ret; |
|
|
|
list_for_each_entry(cdi, &cdrom_list, list) { |
|
switch (option) { |
|
case CTL_NAME: |
|
ret = scnprintf(info + *pos, max_size - *pos, |
|
"\t%s", cdi->name); |
|
break; |
|
case CTL_SPEED: |
|
ret = scnprintf(info + *pos, max_size - *pos, |
|
"\t%d", cdi->speed); |
|
break; |
|
case CTL_SLOTS: |
|
ret = scnprintf(info + *pos, max_size - *pos, |
|
"\t%d", cdi->capacity); |
|
break; |
|
case CTL_CAPABILITY: |
|
ret = scnprintf(info + *pos, max_size - *pos, |
|
"\t%d", CDROM_CAN(val) != 0); |
|
break; |
|
default: |
|
pr_info("invalid option%d\n", option); |
|
return 1; |
|
} |
|
if (!ret) |
|
return 1; |
|
*pos += ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int cdrom_sysctl_info(struct ctl_table *ctl, int write, |
|
void *buffer, size_t *lenp, loff_t *ppos) |
|
{ |
|
int pos; |
|
char *info = cdrom_sysctl_settings.info; |
|
const int max_size = sizeof(cdrom_sysctl_settings.info); |
|
|
|
if (!*lenp || (*ppos && !write)) { |
|
*lenp = 0; |
|
return 0; |
|
} |
|
|
|
mutex_lock(&cdrom_mutex); |
|
|
|
pos = sprintf(info, "CD-ROM information, " VERSION "\n"); |
|
|
|
if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) |
|
goto done; |
|
if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) |
|
goto done; |
|
if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) |
|
goto done; |
|
if (cdrom_print_info("\nCan close tray:\t", |
|
CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan open tray:\t", |
|
CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan lock tray:\t", |
|
CDC_LOCK, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan change speed:", |
|
CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan select disk:", |
|
CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan read multisession:", |
|
CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan read MCN:\t", |
|
CDC_MCN, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nReports media changed:", |
|
CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan play audio:\t", |
|
CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan write CD-R:\t", |
|
CDC_CD_R, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan write CD-RW:", |
|
CDC_CD_RW, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan read DVD:\t", |
|
CDC_DVD, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan write DVD-R:", |
|
CDC_DVD_R, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan write DVD-RAM:", |
|
CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan read MRW:\t", |
|
CDC_MRW, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan write MRW:\t", |
|
CDC_MRW_W, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (cdrom_print_info("\nCan write RAM:\t", |
|
CDC_RAM, info, &pos, CTL_CAPABILITY)) |
|
goto done; |
|
if (!scnprintf(info + pos, max_size - pos, "\n\n")) |
|
goto done; |
|
doit: |
|
mutex_unlock(&cdrom_mutex); |
|
return proc_dostring(ctl, write, buffer, lenp, ppos); |
|
done: |
|
pr_info("info buffer too small\n"); |
|
goto doit; |
|
} |
|
|
|
/* Unfortunately, per device settings are not implemented through |
|
procfs/sysctl yet. When they are, this will naturally disappear. For now |
|
just update all drives. Later this will become the template on which |
|
new registered drives will be based. */ |
|
static void cdrom_update_settings(void) |
|
{ |
|
struct cdrom_device_info *cdi; |
|
|
|
mutex_lock(&cdrom_mutex); |
|
list_for_each_entry(cdi, &cdrom_list, list) { |
|
if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) |
|
cdi->options |= CDO_AUTO_CLOSE; |
|
else if (!autoclose) |
|
cdi->options &= ~CDO_AUTO_CLOSE; |
|
if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) |
|
cdi->options |= CDO_AUTO_EJECT; |
|
else if (!autoeject) |
|
cdi->options &= ~CDO_AUTO_EJECT; |
|
if (lockdoor && CDROM_CAN(CDC_LOCK)) |
|
cdi->options |= CDO_LOCK; |
|
else if (!lockdoor) |
|
cdi->options &= ~CDO_LOCK; |
|
if (check_media_type) |
|
cdi->options |= CDO_CHECK_TYPE; |
|
else |
|
cdi->options &= ~CDO_CHECK_TYPE; |
|
} |
|
mutex_unlock(&cdrom_mutex); |
|
} |
|
|
|
static int cdrom_sysctl_handler(struct ctl_table *ctl, int write, |
|
void *buffer, size_t *lenp, loff_t *ppos) |
|
{ |
|
int ret; |
|
|
|
ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
|
|
|
if (write) { |
|
|
|
/* we only care for 1 or 0. */ |
|
autoclose = !!cdrom_sysctl_settings.autoclose; |
|
autoeject = !!cdrom_sysctl_settings.autoeject; |
|
debug = !!cdrom_sysctl_settings.debug; |
|
lockdoor = !!cdrom_sysctl_settings.lock; |
|
check_media_type = !!cdrom_sysctl_settings.check; |
|
|
|
/* update the option flags according to the changes. we |
|
don't have per device options through sysctl yet, |
|
but we will have and then this will disappear. */ |
|
cdrom_update_settings(); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
/* Place files in /proc/sys/dev/cdrom */ |
|
static struct ctl_table cdrom_table[] = { |
|
{ |
|
.procname = "info", |
|
.data = &cdrom_sysctl_settings.info, |
|
.maxlen = CDROM_STR_SIZE, |
|
.mode = 0444, |
|
.proc_handler = cdrom_sysctl_info, |
|
}, |
|
{ |
|
.procname = "autoclose", |
|
.data = &cdrom_sysctl_settings.autoclose, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = cdrom_sysctl_handler, |
|
}, |
|
{ |
|
.procname = "autoeject", |
|
.data = &cdrom_sysctl_settings.autoeject, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = cdrom_sysctl_handler, |
|
}, |
|
{ |
|
.procname = "debug", |
|
.data = &cdrom_sysctl_settings.debug, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = cdrom_sysctl_handler, |
|
}, |
|
{ |
|
.procname = "lock", |
|
.data = &cdrom_sysctl_settings.lock, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = cdrom_sysctl_handler, |
|
}, |
|
{ |
|
.procname = "check_media", |
|
.data = &cdrom_sysctl_settings.check, |
|
.maxlen = sizeof(int), |
|
.mode = 0644, |
|
.proc_handler = cdrom_sysctl_handler |
|
}, |
|
{ } |
|
}; |
|
|
|
static struct ctl_table cdrom_cdrom_table[] = { |
|
{ |
|
.procname = "cdrom", |
|
.maxlen = 0, |
|
.mode = 0555, |
|
.child = cdrom_table, |
|
}, |
|
{ } |
|
}; |
|
|
|
/* Make sure that /proc/sys/dev is there */ |
|
static struct ctl_table cdrom_root_table[] = { |
|
{ |
|
.procname = "dev", |
|
.maxlen = 0, |
|
.mode = 0555, |
|
.child = cdrom_cdrom_table, |
|
}, |
|
{ } |
|
}; |
|
static struct ctl_table_header *cdrom_sysctl_header; |
|
|
|
static void cdrom_sysctl_register(void) |
|
{ |
|
static atomic_t initialized = ATOMIC_INIT(0); |
|
|
|
if (!atomic_add_unless(&initialized, 1, 1)) |
|
return; |
|
|
|
cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); |
|
|
|
/* set the defaults */ |
|
cdrom_sysctl_settings.autoclose = autoclose; |
|
cdrom_sysctl_settings.autoeject = autoeject; |
|
cdrom_sysctl_settings.debug = debug; |
|
cdrom_sysctl_settings.lock = lockdoor; |
|
cdrom_sysctl_settings.check = check_media_type; |
|
} |
|
|
|
static void cdrom_sysctl_unregister(void) |
|
{ |
|
if (cdrom_sysctl_header) |
|
unregister_sysctl_table(cdrom_sysctl_header); |
|
} |
|
|
|
#else /* CONFIG_SYSCTL */ |
|
|
|
static void cdrom_sysctl_register(void) |
|
{ |
|
} |
|
|
|
static void cdrom_sysctl_unregister(void) |
|
{ |
|
} |
|
|
|
#endif /* CONFIG_SYSCTL */ |
|
|
|
static int __init cdrom_init(void) |
|
{ |
|
cdrom_sysctl_register(); |
|
|
|
return 0; |
|
} |
|
|
|
static void __exit cdrom_exit(void) |
|
{ |
|
pr_info("Uniform CD-ROM driver unloaded\n"); |
|
cdrom_sysctl_unregister(); |
|
} |
|
|
|
module_init(cdrom_init); |
|
module_exit(cdrom_exit); |
|
MODULE_LICENSE("GPL");
|
|
|