diff options
Diffstat (limited to 'drivers/cdrom/cdrom.c')
| -rw-r--r-- | drivers/cdrom/cdrom.c | 1762 |
1 files changed, 871 insertions, 891 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index 8a3aff724d98..31ba1f8c1f78 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -7,22 +7,13 @@ License. See linux/COPYING for more information. Uniform CD-ROM driver for Linux. - See Documentation/cdrom/cdrom-standard.tex for usage information. + 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 <david@tm.tno.nl> @@ -265,6 +256,7 @@ /* #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> @@ -272,6 +264,7 @@ #include <linux/errno.h> #include <linux/kernel.h> #include <linux/mm.h> +#include <linux/nospec.h> #include <linux/slab.h> #include <linux/cdrom.h> #include <linux/sysctl.h> @@ -281,8 +274,8 @@ #include <linux/fcntl.h> #include <linux/blkdev.h> #include <linux/times.h> - -#include <asm/uaccess.h> +#include <linux/uaccess.h> +#include <scsi/scsi_common.h> /* used to tell the module to turn on full debugging messages */ static bool debug; @@ -312,36 +305,24 @@ static const char *mrw_format_status[] = { static const char *mrw_address_space[] = { "DMA", "GAA" }; -#if (ERRLOGMASK!=CD_NOTHING) -#define cdinfo(type, fmt, args...) \ +#if (ERRLOGMASK != CD_NOTHING) +#define cd_dbg(type, fmt, ...) \ do { \ if ((ERRLOGMASK & type) || debug == 1) \ - pr_info(fmt, ##args); \ + pr_debug(fmt, ##__VA_ARGS__); \ } while (0) #else -#define cdinfo(type, fmt, args...) \ +#define cd_dbg(type, fmt, ...) \ do { \ if (0 && (ERRLOGMASK & type) || debug == 1) \ - pr_info(fmt, ##args); \ + pr_debug(fmt, ##__VA_ARGS__); \ } while (0) #endif -/* These are used to simplify getting data in from and back to user land */ -#define IOCTL_IN(arg, type, in) \ - if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \ - return -EFAULT; - -#define IOCTL_OUT(arg, type, out) \ - if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \ - return -EFAULT; - /* 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)) -/* used in the audio ioctls */ -#define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret - /* * Another popular OS uses 7 seconds as the hard timeout for default * commands, so it is a good choice for us as well. @@ -349,146 +330,90 @@ do { \ #define CDROM_DEF_TIMEOUT (7 * HZ) /* Not-exported routines. */ -static int open_for_data(struct cdrom_device_info * cdi); -static int check_for_audio_disc(struct cdrom_device_info * cdi, - struct cdrom_device_ops * cdo); -static void sanitize_format(union cdrom_addr *addr, - u_char * curr, u_char requested); -static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, - unsigned long arg); - -int cdrom_get_last_written(struct cdrom_device_info *, long *); -static int cdrom_get_next_writable(struct cdrom_device_info *, long *); -static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*); - -static int cdrom_mrw_exit(struct cdrom_device_info *cdi); - -static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di); static void cdrom_sysctl_register(void); static LIST_HEAD(cdrom_list); -static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, - struct packet_command *cgc) +static void signal_media_change(struct cdrom_device_info *cdi) { - if (cgc->sense) { - cgc->sense->sense_key = 0x05; - cgc->sense->asc = 0x20; - cgc->sense->ascq = 0x00; - } - - cgc->stat = -EIO; - return -EIO; + cdi->mc_flags = 0x3; /* set media changed bits, on both queues */ + cdi->last_media_change_ms = ktime_to_ms(ktime_get()); } -/* 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(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits) - -int register_cdrom(struct cdrom_device_info *cdi) +int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, + struct packet_command *cgc) { - static char banner_printed; - struct cdrom_device_ops *cdo = cdi->ops; - int *change_capability = (int *)&cdo->capability; /* hack */ - - cdinfo(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(); + if (cgc->sshdr) { + cgc->sshdr->sense_key = 0x05; + cgc->sshdr->asc = 0x20; + cgc->sshdr->ascq = 0x00; } - ENSURE(drive_status, CDC_DRIVE_STATUS ); - if (cdo->check_events == NULL && cdo->media_changed == NULL) - *change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC); - ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); - ENSURE(lock_door, CDC_LOCK); - ENSURE(select_speed, CDC_SELECT_SPEED); - ENSURE(get_last_session, CDC_MULTI_SESSION); - ENSURE(get_mcn, CDC_MCN); - ENSURE(reset, CDC_RESET); - ENSURE(generic_packet, CDC_GENERIC_PACKET); - cdi->mc_flags = 0; - cdo->n_minors = 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->disk) - cdi->cdda_method = CDDA_BPC_FULL; - else - cdi->cdda_method = CDDA_OLD; - - if (!cdo->generic_packet) - cdo->generic_packet = cdrom_dummy_generic_packet; - - cdinfo(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; + cgc->stat = -EIO; + return -EIO; } -#undef ENSURE +EXPORT_SYMBOL(cdrom_dummy_generic_packet); -void unregister_cdrom(struct cdrom_device_info *cdi) +static int cdrom_flush_cache(struct cdrom_device_info *cdi) { - cdinfo(CD_OPEN, "entering unregister_cdrom\n"); + struct packet_command cgc; - mutex_lock(&cdrom_mutex); - list_del(&cdi->list); - mutex_unlock(&cdrom_mutex); + init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); + cgc.cmd[0] = GPCMD_FLUSH_CACHE; - if (cdi->exit) - cdi->exit(cdi); + cgc.timeout = 5 * 60 * HZ; - cdi->ops->n_minors--; - cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); + return cdi->ops->generic_packet(cdi, &cgc); } -int cdrom_get_media_event(struct cdrom_device_info *cdi, - struct media_event_desc *med) +/* 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; - unsigned char buffer[8]; - struct event_header *eh = (struct event_header *) buffer; + int ret, buflen; - 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); + /* 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; - if (cdi->ops->generic_packet(cdi, &cgc)) - return 1; + ret = cdo->generic_packet(cdi, &cgc); + if (ret) + return ret; - if (be16_to_cpu(eh->data_len) < sizeof(*med)) - return 1; + /* 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 (eh->nea || eh->notification_class != 0x4) - return 1; + if (buflen > sizeof(disc_information)) + buflen = sizeof(disc_information); - memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); - return 0; + 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 @@ -605,18 +530,6 @@ static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) return cdi->ops->generic_packet(cdi, &cgc); } -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); -} - static int cdrom_mrw_exit(struct cdrom_device_info *cdi) { disc_information di; @@ -650,17 +563,19 @@ static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) cgc.buffer = buffer; cgc.buflen = sizeof(buffer); - if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0))) + ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0); + if (ret) return ret; - mph = (struct mode_page_header *) buffer; + 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; - if ((ret = cdrom_mode_select(cdi, &cgc))) + ret = cdrom_mode_select(cdi, &cgc); + if (ret) return ret; pr_info("%s: mrw address space %s selected\n", @@ -668,6 +583,103 @@ static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int 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; + cdi->last_media_change_ms = ktime_to_ms(ktime_get()); + + 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 (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; +} +EXPORT_SYMBOL(register_cdrom); +#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); + + cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); +} +EXPORT_SYMBOL(unregister_cdrom); + +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; +} +EXPORT_SYMBOL(cdrom_get_media_event); + static int cdrom_get_random_writable(struct cdrom_device_info *cdi, struct rwrt_feature_desc *rfd) { @@ -839,7 +851,7 @@ static int cdrom_ram_open_write(struct cdrom_device_info *cdi) else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) ret = !rfd.curr; - cdinfo(CD_OPEN, "can open for random write\n"); + cd_dbg(CD_OPEN, "can open for random write\n"); return ret; } @@ -847,7 +859,7 @@ static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) { struct packet_command cgc; char buffer[32]; - int ret, mmc3_profile; + int mmc3_profile; init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); @@ -857,7 +869,7 @@ static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ cgc.quiet = 1; - if ((ret = cdi->ops->generic_packet(cdi, &cgc))) + if (cdi->ops->generic_packet(cdi, &cgc)) mmc3_profile = 0xffff; else mmc3_profile = (buffer[6] << 8) | buffer[7]; @@ -870,6 +882,7 @@ 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; @@ -928,12 +941,12 @@ static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) struct packet_command cgc; if (cdi->mmc3_profile != 0x1a) { - cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); + cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); return; } if (!cdi->media_written) { - cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); + cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); return; } @@ -960,91 +973,80 @@ static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) 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 -} - -/* 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) +/* badly broken, I know. Is due for a fixup anytime. */ +static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks) { - int ret; - - cdinfo(CD_OPEN, "entering cdrom_open\n"); - - /* open is event synchronization point, check events first */ - check_disk_change(bdev); - - /* 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; - 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; - } + 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; } - if (ret) - goto err; - - cdinfo(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); - cdinfo(CD_OPEN, "door unlocked.\n"); + /* 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; } - cdi->ops->release(cdi); -err: - cdi->use_count--; - return ret; + /* 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 open_for_data(struct cdrom_device_info *cdi) { int ret; - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; tracktype tracks; - cdinfo(CD_OPEN, "entering open_for_data\n"); + 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); - cdinfo(CD_OPEN, "drive_status=%d\n", ret); + cd_dbg(CD_OPEN, "drive_status=%d\n", ret); if (ret == CDS_TRAY_OPEN) { - cdinfo(CD_OPEN, "the tray is open...\n"); + 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) { - cdinfo(CD_OPEN, "trying to close the tray.\n"); + cd_dbg(CD_OPEN, "trying to close the tray\n"); ret=cdo->tray_move(cdi,0); if (ret) { - cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n"); + 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 @@ -1054,19 +1056,19 @@ int open_for_data(struct cdrom_device_info * cdi) goto clean_up_and_return; } } else { - cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n"); + 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)) { - cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); - cdinfo(CD_OPEN, "tray might not contain a medium.\n"); + 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; } - cdinfo(CD_OPEN, "the tray is now closed.\n"); + 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); @@ -1077,7 +1079,7 @@ int open_for_data(struct cdrom_device_info * cdi) } cdrom_count_tracks(cdi, &tracks); if (tracks.error == CDS_NO_DISC) { - cdinfo(CD_OPEN, "bummer. no disc.\n"); + cd_dbg(CD_OPEN, "bummer. no disc.\n"); ret=-ENOMEDIUM; goto clean_up_and_return; } @@ -1087,34 +1089,34 @@ int open_for_data(struct cdrom_device_info * cdi) if (cdi->options & CDO_CHECK_TYPE) { /* give people a warning shot, now that CDO_CHECK_TYPE is the default case! */ - cdinfo(CD_OPEN, "bummer. wrong media type.\n"); - cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", - (unsigned int)task_pid_nr(current)); + 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 { - cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n"); + cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n"); } } - cdinfo(CD_OPEN, "all seems well, opening the device.\n"); + cd_dbg(CD_OPEN, "all seems well, opening the device\n"); /* all seems well, we can open the device */ ret = cdo->open(cdi, 0); /* open for data */ - cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret); + 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) { - cdinfo(CD_OPEN, "open device failed.\n"); + 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); - cdinfo(CD_OPEN, "door locked.\n"); + cd_dbg(CD_OPEN, "door locked\n"); } - cdinfo(CD_OPEN, "device opened successfully.\n"); + cd_dbg(CD_OPEN, "device opened successfully\n"); return ret; /* Something failed. Try to unlock the drive, because some drivers @@ -1123,37 +1125,92 @@ int open_for_data(struct cdrom_device_info * cdi) 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: - cdinfo(CD_OPEN, "open failed.\n"); + cd_dbg(CD_OPEN, "open failed\n"); if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { cdo->lock_door(cdi, 0); - cdinfo(CD_OPEN, "door unlocked.\n"); + 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, blk_mode_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 & BLK_OPEN_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 & BLK_OPEN_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; + } + cdi->opened_for_data = true; } + + 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; } +EXPORT_SYMBOL(cdrom_open); /* 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, - struct cdrom_device_ops * cdo) +static int check_for_audio_disc(struct cdrom_device_info *cdi, + const struct cdrom_device_ops *cdo) { int ret; tracktype tracks; - cdinfo(CD_OPEN, "entering check_for_audio_disc\n"); + 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); - cdinfo(CD_OPEN, "drive_status=%d\n", ret); + cd_dbg(CD_OPEN, "drive_status=%d\n", ret); if (ret == CDS_TRAY_OPEN) { - cdinfo(CD_OPEN, "the tray is open...\n"); + 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) { - cdinfo(CD_OPEN, "trying to close the tray.\n"); + cd_dbg(CD_OPEN, "trying to close the tray\n"); ret=cdo->tray_move(cdi,0); if (ret) { - cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n"); + 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 @@ -1162,20 +1219,20 @@ static int check_for_audio_disc(struct cdrom_device_info * cdi, return -ENOMEDIUM; } } else { - cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n"); + 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)) { - cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); + cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); return -ENOMEDIUM; } if (ret!=CDS_DISC_OK) { - cdinfo(CD_OPEN, "bummer. disc isn't ready.\n"); + cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n"); return -EIO; } - cdinfo(CD_OPEN, "the tray is now closed.\n"); + cd_dbg(CD_OPEN, "the tray is now closed\n"); } } cdrom_count_tracks(cdi, &tracks); @@ -1188,48 +1245,43 @@ static int check_for_audio_disc(struct cdrom_device_info * cdi, return 0; } -void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) +void cdrom_release(struct cdrom_device_info *cdi) { - struct cdrom_device_ops *cdo = cdi->ops; - int opened_for_data; + const struct cdrom_device_ops *cdo = cdi->ops; - cdinfo(CD_CLOSE, "entering cdrom_release\n"); + cd_dbg(CD_CLOSE, "entering cdrom_release\n"); if (cdi->use_count > 0) cdi->use_count--; if (cdi->use_count == 0) { - cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name); + cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", + cdi->name); cdrom_dvd_rw_close_write(cdi); + if (CDROM_CAN(CDC_MRW_W)) + cdrom_mrw_exit(cdi); if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) { - cdinfo(CD_CLOSE, "Unlocking door!\n"); + 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)) + + if (cdi->use_count == 0 && cdi->opened_for_data) { + if (cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) cdo->tray_move(cdi, 1); + cdi->opened_for_data = false; } } +EXPORT_SYMBOL(cdrom_release); static int cdrom_read_mech_status(struct cdrom_device_info *cdi, struct cdrom_changer_info *buf) { struct packet_command cgc; - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; int length; /* @@ -1262,7 +1314,7 @@ static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) struct cdrom_changer_info *info; int ret; - cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n"); + cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n"); if (cdi->sanyo_slot) return CDS_NO_INFO; @@ -1288,11 +1340,10 @@ out_free: */ int cdrom_number_of_slots(struct cdrom_device_info *cdi) { - int status; int nslots = 1; struct cdrom_changer_info *info; - cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n"); + cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n"); /* cdrom_read_mech_status requires a valid value for capacity: */ cdi->capacity = 0; @@ -1300,12 +1351,13 @@ int cdrom_number_of_slots(struct cdrom_device_info *cdi) if (!info) return -ENOMEM; - if ((status = cdrom_read_mech_status(cdi, info)) == 0) + if (cdrom_read_mech_status(cdi, info) == 0) nslots = info->hdr.nslots; kfree(info); return nslots; } +EXPORT_SYMBOL(cdrom_number_of_slots); /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ @@ -1313,7 +1365,7 @@ static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) { struct packet_command cgc; - cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n"); + cd_dbg(CD_CHANGER, "entering cdrom_load_unload()\n"); if (cdi->sanyo_slot && slot < 0) return 0; @@ -1342,18 +1394,15 @@ static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) int curslot; int ret; - cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n"); + 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); - else - cdi->ops->media_changed(cdi, slot); if (slot == CDSL_NONE) { - /* set media changed bits, on both queues */ - cdi->mc_flags = 0x3; + signal_media_change(cdi); return cdrom_load_unload(cdi, -1); } @@ -1386,7 +1435,7 @@ static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) slot = curslot; /* set media changed bits on both queues */ - cdi->mc_flags = 0x3; + signal_media_change(cdi); if ((ret = cdrom_load_unload(cdi, slot))) return ret; @@ -1446,16 +1495,13 @@ int media_changed(struct cdrom_device_info *cdi, int queue) return ret; /* changed since last call? */ - if (cdi->ops->check_events) { - 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; - } else - changed = cdi->ops->media_changed(cdi, CDSL_CURRENT); + 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 */ + signal_media_change(cdi); ret |= 1; cdi->media_written = 0; } @@ -1464,63 +1510,6 @@ int media_changed(struct cdrom_device_info *cdi, int queue) return ret; } -int cdrom_media_changed(struct cdrom_device_info *cdi) -{ - /* This talks to the VFS, which doesn't like errors - just 1 or 0. - * Returning "0" is always safe (media hasn't been changed). Do that - * if the low-level cdrom driver dosn't support media changed. */ - if (cdi == NULL || cdi->ops->media_changed == NULL) - return 0; - if (!CDROM_CAN(CDC_MEDIA_CHANGED)) - return 0; - return media_changed(cdi, 0); -} - -/* 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; - cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); - /* Grab the TOC header so we can see how many tracks there are */ - if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) { - 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++; - cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", - i, entry.cdte_format, entry.cdte_ctrl); - } - cdinfo(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); -} - /* Requests to the low-level drivers will /always/ be done in the following format convention: @@ -1568,6 +1557,7 @@ void init_cdrom_command(struct packet_command *cgc, void *buf, int len, cgc->data_direction = type; cgc->timeout = CDROM_DEF_TIMEOUT; } +EXPORT_SYMBOL(init_cdrom_command); /* DVD handling */ @@ -1623,7 +1613,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) int ret; u_char buf[20]; struct packet_command cgc; - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; rpc_state_t rpc_state; memset(buf, 0, sizeof(buf)); @@ -1632,7 +1622,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) switch (ai->type) { /* LU data send */ case DVD_LU_SEND_AGID: - cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n"); + cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n"); cgc.quiet = 1; setup_report_key(&cgc, ai->lsa.agid, 0); @@ -1644,7 +1634,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) break; case DVD_LU_SEND_KEY1: - cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); + 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))) @@ -1655,7 +1645,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) break; case DVD_LU_SEND_CHALLENGE: - cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); + 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))) @@ -1667,7 +1657,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) /* Post-auth key */ case DVD_LU_SEND_TITLE_KEY: - cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); + 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; @@ -1686,7 +1676,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) break; case DVD_LU_SEND_ASF: - cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n"); + 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))) @@ -1697,7 +1687,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) /* LU data receive (LU changes state) */ case DVD_HOST_SEND_CHALLENGE: - cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); + 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); @@ -1709,7 +1699,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) break; case DVD_HOST_SEND_KEY2: - cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); + 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); @@ -1724,7 +1714,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) /* Misc */ case DVD_INVALIDATE_AGID: cgc.quiet = 1; - cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); + 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; @@ -1732,7 +1722,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) /* Get region settings */ case DVD_LU_SEND_RPC_STATE: - cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); + 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; @@ -1749,7 +1739,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) /* Set region settings */ case DVD_HOST_SEND_RPC_STATE: - cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); + 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; @@ -1759,7 +1749,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) break; default: - cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); + cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); return -ENOTTY; } @@ -1771,7 +1761,7 @@ static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s, { unsigned char buf[21], *base; struct dvd_layer *layer; - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; int ret, layer_num = s->physical.layer_num; if (layer_num >= DVD_LAYERS) @@ -1822,7 +1812,7 @@ static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s, { int ret; u_char buf[8]; - struct cdrom_device_ops *cdo = cdi->ops; + 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; @@ -1846,7 +1836,7 @@ static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s, { int ret, size; u_char *buf; - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; size = sizeof(s->disckey.value) + 4; @@ -1874,7 +1864,7 @@ static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, { int ret, size = 4 + 188; u_char *buf; - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; buf = kmalloc(size, GFP_KERNEL); if (!buf) @@ -1891,7 +1881,8 @@ static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, s->bca.len = buf[0] << 8 | buf[1]; if (s->bca.len < 12 || s->bca.len > 188) { - cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len); + cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n", + s->bca.len); ret = -EIO; goto out; } @@ -1907,7 +1898,7 @@ static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, { int ret = 0, size; u_char *buf; - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; size = sizeof(s->manufact.value) + 4; @@ -1927,14 +1918,13 @@ static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, s->manufact.len = buf[0] << 8 | buf[1]; if (s->manufact.len < 0) { - cdinfo(CD_WARNING, "Received invalid manufacture info length" - " (%d)\n", s->manufact.len); + cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n", + s->manufact.len); ret = -EIO; } else { if (s->manufact.len > 2048) { - cdinfo(CD_WARNING, "Received invalid manufacture info " - "length (%d): truncating to 2048\n", - s->manufact.len); + 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); @@ -1965,8 +1955,8 @@ static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s, return dvd_read_manufact(cdi, s, cgc); default: - cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", - s->type); + cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", + s->type); return -EINVAL; } } @@ -1975,7 +1965,7 @@ int cdrom_mode_sense(struct cdrom_device_info *cdi, struct packet_command *cgc, int page_code, int page_control) { - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; memset(cgc->cmd, 0, sizeof(cgc->cmd)); @@ -1986,11 +1976,12 @@ int cdrom_mode_sense(struct cdrom_device_info *cdi, cgc->data_direction = CGC_DATA_READ; return cdo->generic_packet(cdi, cgc); } +EXPORT_SYMBOL(cdrom_mode_sense); int cdrom_mode_select(struct cdrom_device_info *cdi, struct packet_command *cgc) { - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; memset(cgc->cmd, 0, sizeof(cgc->cmd)); memset(cgc->buffer, 0, 2); @@ -2001,18 +1992,19 @@ int cdrom_mode_select(struct cdrom_device_info *cdi, cgc->data_direction = CGC_DATA_WRITE; return cdo->generic_packet(cdi, cgc); } +EXPORT_SYMBOL(cdrom_mode_select); static int cdrom_read_subchannel(struct cdrom_device_info *cdi, struct cdrom_subchnl *subchnl, int mcn) { - struct cdrom_device_ops *cdo = cdi->ops; + 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] = 2; /* MSF addressing */ + 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; @@ -2021,17 +2013,27 @@ static int cdrom_read_subchannel(struct cdrom_device_info *cdi, return ret; subchnl->cdsc_audiostatus = cgc.buffer[1]; - subchnl->cdsc_format = CDROM_MSF; subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; subchnl->cdsc_trk = cgc.buffer[6]; subchnl->cdsc_ind = cgc.buffer[7]; - 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]; + 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; } @@ -2043,7 +2045,7 @@ static int cdrom_read_cd(struct cdrom_device_info *cdi, struct packet_command *cgc, int lba, int blocksize, int nblocks) { - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; memset(&cgc->cmd, 0, sizeof(cgc->cmd)); cgc->cmd[0] = GPCMD_READ_10; @@ -2063,7 +2065,7 @@ static int cdrom_read_block(struct cdrom_device_info *cdi, struct packet_command *cgc, int lba, int nblocks, int format, int blksize) { - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; memset(&cgc->cmd, 0, sizeof(cgc->cmd)); cgc->cmd[0] = GPCMD_READ_CD; @@ -2107,7 +2109,7 @@ static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, */ nr = nframes; do { - cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); + cgc.buffer = kmalloc_array(nr, CD_FRAMESIZE_RAW, GFP_KERNEL); if (cgc.buffer) break; @@ -2140,70 +2142,26 @@ static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, int lba, int nframes) { - struct request_queue *q = cdi->disk->queue; - struct request *rq; - struct bio *bio; - unsigned int len; + int max_frames = (queue_max_sectors(cdi->disk->queue) << 9) / + CD_FRAMESIZE_RAW; int nr, ret = 0; - if (!q) - return -ENXIO; - cdi->last_sense = 0; while (nframes) { - nr = nframes; if (cdi->cdda_method == CDDA_BPC_SINGLE) nr = 1; - if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9)) - nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW; - - len = nr * CD_FRAMESIZE_RAW; - - rq = blk_get_request(q, READ, GFP_KERNEL); - if (!rq) { - ret = -ENOMEM; - break; - } - - ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL); - if (ret) { - blk_put_request(rq); - break; - } - - rq->cmd[0] = GPCMD_READ_CD; - rq->cmd[1] = 1 << 2; - rq->cmd[2] = (lba >> 24) & 0xff; - rq->cmd[3] = (lba >> 16) & 0xff; - rq->cmd[4] = (lba >> 8) & 0xff; - rq->cmd[5] = lba & 0xff; - rq->cmd[6] = (nr >> 16) & 0xff; - rq->cmd[7] = (nr >> 8) & 0xff; - rq->cmd[8] = nr & 0xff; - rq->cmd[9] = 0xf8; - - rq->cmd_len = 12; - rq->cmd_type = REQ_TYPE_BLOCK_PC; - rq->timeout = 60 * HZ; - bio = rq->bio; - - if (blk_execute_rq(q, cdi->disk, rq, 0)) { - struct request_sense *s = rq->sense; - ret = -EIO; - cdi->last_sense = s->sense_key; - } - - if (blk_rq_unmap_user(bio)) - ret = -EFAULT; - blk_put_request(rq); + 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 += len; + ubuf += (nr * CD_FRAMESIZE_RAW); } return ret; @@ -2248,42 +2206,51 @@ retry: return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); } -static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, - void __user *argp) +int cdrom_multisession(struct cdrom_device_info *cdi, + struct cdrom_multisession *info) { - struct cdrom_multisession ms_info; u8 requested_format; int ret; - cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); - if (!(cdi->ops->capability & CDC_MULTI_SESSION)) return -ENOSYS; - if (copy_from_user(&ms_info, argp, sizeof(ms_info))) - return -EFAULT; - - requested_format = ms_info.addr_format; + requested_format = info->addr_format; if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) return -EINVAL; - ms_info.addr_format = CDROM_LBA; + info->addr_format = CDROM_LBA; - ret = cdi->ops->get_last_session(cdi, &ms_info); - if (ret) - return ret; + 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; - sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); + cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); - if (copy_to_user(argp, &ms_info, sizeof(ms_info))) + 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; - cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); - return 0; + cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); + return ret; } static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) { - cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n"); if (!CDROM_CAN(CDC_OPEN_TRAY)) return -ENOSYS; @@ -2300,7 +2267,7 @@ static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) { - cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); if (!CDROM_CAN(CDC_CLOSE_TRAY)) return -ENOSYS; @@ -2310,7 +2277,7 @@ static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, unsigned long arg) { - cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); if (!CDROM_CAN(CDC_OPEN_TRAY)) return -ENOSYS; @@ -2329,7 +2296,7 @@ static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, struct cdrom_changer_info *info; int ret; - cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); if (!CDROM_CAN(CDC_MEDIA_CHANGED)) return -ENOSYS; @@ -2338,9 +2305,12 @@ static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) return media_changed(cdi, 1); - if ((unsigned int)arg >= cdi->capacity) + if (arg >= cdi->capacity) return -EINVAL; + /* Prevent arg from speculatively bypassing the length check */ + arg = array_index_nospec(arg, cdi->capacity); + info = kmalloc(sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; @@ -2352,10 +2322,53 @@ static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, return ret; } +/* + * Media change detection with timing information. + * + * arg is a pointer to a cdrom_timed_media_change_info struct. + * arg->last_media_change may be set by calling code to signal + * the timestamp (in ms) of the last known media change (by the caller). + * Upon successful return, ioctl call will set arg->last_media_change + * to the latest media change timestamp known by the kernel/driver + * and set arg->has_changed to 1 if that timestamp is more recent + * than the timestamp set by the caller. + */ +static int cdrom_ioctl_timed_media_change(struct cdrom_device_info *cdi, + unsigned long arg) +{ + int ret; + struct cdrom_timed_media_change_info __user *info; + struct cdrom_timed_media_change_info tmp_info; + + if (!CDROM_CAN(CDC_MEDIA_CHANGED)) + return -ENOSYS; + + info = (struct cdrom_timed_media_change_info __user *)arg; + cd_dbg(CD_DO_IOCTL, "entering CDROM_TIMED_MEDIA_CHANGE\n"); + + ret = cdrom_ioctl_media_changed(cdi, CDSL_CURRENT); + if (ret < 0) + return ret; + + if (copy_from_user(&tmp_info, info, sizeof(tmp_info)) != 0) + return -EFAULT; + + tmp_info.media_flags = 0; + if (cdi->last_media_change_ms > tmp_info.last_media_change) + tmp_info.media_flags |= MEDIA_CHANGED_FLAG; + + tmp_info.last_media_change = cdi->last_media_change_ms; + + if (copy_to_user(info, &tmp_info, sizeof(*info)) != 0) + return -EFAULT; + + return 0; +} + static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, unsigned long arg) { - cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); /* * Options need to be in sync with capability. @@ -2383,7 +2396,7 @@ static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, unsigned long arg) { - cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); cdi->options &= ~(int) arg; return cdi->options; @@ -2392,7 +2405,7 @@ static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, unsigned long arg) { - cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); if (!CDROM_CAN(CDC_SELECT_SPEED)) return -ENOSYS; @@ -2402,32 +2415,24 @@ static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, unsigned long arg) { - cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); + 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 ((int)arg >= cdi->capacity) + 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); - - cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n"); + 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) { - cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n"); if (!capable(CAP_SYS_ADMIN)) return -EACCES; @@ -2440,7 +2445,7 @@ static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, unsigned long arg) { - cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl"); + cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl"); if (!CDROM_CAN(CDC_LOCK)) return -EDRIVE_CANT_DO_THIS; @@ -2459,7 +2464,7 @@ static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, unsigned long arg) { - cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis"); + cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis"); if (!capable(CAP_SYS_ADMIN)) return -EACCES; @@ -2469,7 +2474,7 @@ static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) { - cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); return (cdi->ops->capability & ~cdi->mask); } @@ -2485,7 +2490,7 @@ static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn mcn; int ret; - cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); if (!(cdi->ops->capability & CDC_MCN)) return -ENOSYS; @@ -2495,21 +2500,21 @@ static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, if (copy_to_user(argp, &mcn, sizeof(mcn))) return -EFAULT; - cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); + 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) { - cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); + 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 (((int)arg >= cdi->capacity)) + if (arg >= cdi->capacity) return -EINVAL; return cdrom_slot_status(cdi, arg); } @@ -2535,7 +2540,7 @@ static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) { tracktype tracks; - cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); cdrom_count_tracks(cdi, &tracks); if (tracks.error) @@ -2557,13 +2562,13 @@ static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) return CDS_DATA_1; /* Policy mode off */ - cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n"); + 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) { - cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); return cdi->capacity; } @@ -2574,7 +2579,7 @@ static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, u8 requested, back; int ret; - /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ + /* cd_dbg(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ if (copy_from_user(&q, argp, sizeof(q))) return -EFAULT; @@ -2594,7 +2599,7 @@ static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, if (copy_to_user(argp, &q, sizeof(q))) return -EFAULT; - /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ + /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ return 0; } @@ -2604,7 +2609,7 @@ static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, struct cdrom_tochdr header; int ret; - /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ + /* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ if (copy_from_user(&header, argp, sizeof(header))) return -EFAULT; @@ -2615,36 +2620,41 @@ static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, if (copy_to_user(argp, &header, sizeof(header))) return -EFAULT; - /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ + /* 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; - u8 requested_format; int ret; - /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ - if (copy_from_user(&entry, argp, sizeof(entry))) return -EFAULT; - - requested_format = entry.cdte_format; - 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) - return ret; - sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); - - if (copy_to_user(argp, &entry, sizeof(entry))) + ret = cdrom_read_tocentry(cdi, &entry); + if (!ret && copy_to_user(argp, &entry, sizeof(entry))) return -EFAULT; - /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ - return 0; + return ret; } static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, @@ -2652,7 +2662,7 @@ static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, { struct cdrom_msf msf; - cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); if (!CDROM_CAN(CDC_PLAY_AUDIO)) return -ENOSYS; @@ -2667,7 +2677,7 @@ static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, struct cdrom_ti ti; int ret; - cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); if (!CDROM_CAN(CDC_PLAY_AUDIO)) return -ENOSYS; @@ -2684,7 +2694,7 @@ static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, { struct cdrom_volctrl volume; - cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); if (!CDROM_CAN(CDC_PLAY_AUDIO)) return -ENOSYS; @@ -2699,7 +2709,7 @@ static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, struct cdrom_volctrl volume; int ret; - cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); if (!CDROM_CAN(CDC_PLAY_AUDIO)) return -ENOSYS; @@ -2718,7 +2728,7 @@ static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, { int ret; - cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); + cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); if (!CDROM_CAN(CDC_PLAY_AUDIO)) return -ENOSYS; @@ -2729,109 +2739,12 @@ static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, } /* - * 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; - - /* - * Try the generic SCSI command ioctl's first. - */ - ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp); - if (ret != -ENOTTY) - return 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 cdinfo() 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; -} - -/* * 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) { - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; struct packet_command cgc; struct modesel_head mh; @@ -2854,12 +2767,164 @@ static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) 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; +} +EXPORT_SYMBOL(cdrom_get_last_written); + +/* 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) + void __user *arg, + struct packet_command *cgc, + int cmd) { - struct request_sense sense; + struct scsi_sense_hdr sshdr; struct cdrom_msf msf; int blocksize = 0, format = 0, lba; int ret; @@ -2876,7 +2941,8 @@ static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, blocksize = CD_FRAMESIZE_RAW0; break; } - IOCTL_IN(arg, struct cdrom_msf, msf); + 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) @@ -2886,24 +2952,26 @@ static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, if (cgc->buffer == NULL) return -ENOMEM; - memset(&sense, 0, sizeof(sense)); - cgc->sense = &sense; + 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 && sense.sense_key == 0x05 && - sense.asc == 0x20 && - sense.ascq == 0x00) { + 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 */ - /* FIXME: switch back again... */ - ret = cdrom_switch_blocksize(cdi, blocksize); - if (ret) - goto out; - cgc->sense = NULL; + 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); - ret |= cdrom_switch_blocksize(cdi, blocksize); + if (blocksize != CD_FRAMESIZE) + ret |= cdrom_switch_blocksize(cdi, CD_FRAMESIZE); } if (!ret && copy_to_user(arg, cgc->buffer, blocksize)) ret = -EFAULT; @@ -2913,12 +2981,36 @@ out: } static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, - void __user *arg) + void __user *arg) { struct cdrom_read_audio ra; int lba; - IOCTL_IN(arg, struct cdrom_read_audio, ra); +#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, @@ -2937,36 +3029,39 @@ static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, } static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi, - void __user *arg) + void __user *arg) { int ret; struct cdrom_subchnl q; u_char requested, back; - IOCTL_IN(arg, struct cdrom_subchnl, q); + 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; - q.cdsc_format = CDROM_MSF; + 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); - IOCTL_OUT(arg, struct cdrom_subchnl, q); - /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ + 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) + void __user *arg, + struct packet_command *cgc) { - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; struct cdrom_msf msf; - cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); - IOCTL_IN(arg, 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; @@ -2979,13 +3074,14 @@ static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi, } static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, - void __user *arg, - struct packet_command *cgc) + void __user *arg, + struct packet_command *cgc) { - struct cdrom_device_ops *cdo = cdi->ops; + const struct cdrom_device_ops *cdo = cdi->ops; struct cdrom_blk blk; - cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); - IOCTL_IN(arg, 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; @@ -2998,9 +3094,9 @@ static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, } static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, - void __user *arg, - struct packet_command *cgc, - unsigned int cmd) + void __user *arg, + struct packet_command *cgc, + unsigned int cmd) { struct cdrom_volctrl volctrl; unsigned char buffer[32]; @@ -3008,9 +3104,11 @@ static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, unsigned short offset; int ret; - cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n"); - IOCTL_IN(arg, struct cdrom_volctrl, volctrl); + if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg, + sizeof(volctrl))) + return -EFAULT; cgc->buffer = buffer; cgc->buflen = 24; @@ -3030,14 +3128,14 @@ static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, if (offset + 16 > cgc->buflen) { cgc->buflen = offset + 16; ret = cdrom_mode_sense(cdi, cgc, - GPMODE_AUDIO_CTL_PAGE, 0); + GPMODE_AUDIO_CTL_PAGE, 0); if (ret) return ret; } /* sanity check */ if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || - buffer[offset + 1] < 14) + buffer[offset + 1] < 14) return -EINVAL; /* now we have the current volume settings. if it was only @@ -3047,7 +3145,9 @@ static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, volctrl.channel1 = buffer[offset+11]; volctrl.channel2 = buffer[offset+13]; volctrl.channel3 = buffer[offset+15]; - IOCTL_OUT(arg, struct cdrom_volctrl, volctrl); + if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl, + sizeof(volctrl))) + return -EFAULT; return 0; } @@ -3069,11 +3169,11 @@ static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, } static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, - struct packet_command *cgc, - int cmd) + struct packet_command *cgc, + int cmd) { - struct cdrom_device_ops *cdo = cdi->ops; - cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); + 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; @@ -3082,11 +3182,11 @@ static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, } static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, - struct packet_command *cgc, - int cmd) + struct packet_command *cgc, + int cmd) { - struct cdrom_device_ops *cdo = cdi->ops; - cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); + 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; @@ -3094,8 +3194,8 @@ static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, } static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, - void __user *arg, - struct packet_command *cgc) + void __user *arg, + struct packet_command *cgc) { int ret; dvd_struct *s; @@ -3104,15 +3204,11 @@ static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, if (!CDROM_CAN(CDC_DVD)) return -ENOSYS; - s = kmalloc(size, GFP_KERNEL); - if (!s) - return -ENOMEM; + s = memdup_user(arg, size); + if (IS_ERR(s)) + return PTR_ERR(s); - cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); - if (copy_from_user(s, arg, size)) { - kfree(s); - return -EFAULT; - } + cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); ret = dvd_read_struct(cdi, s, cgc); if (ret) @@ -3126,45 +3222,50 @@ out: } static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi, - void __user *arg) + void __user *arg) { int ret; dvd_authinfo ai; if (!CDROM_CAN(CDC_DVD)) return -ENOSYS; - cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n"); - IOCTL_IN(arg, dvd_authinfo, ai); + 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; - IOCTL_OUT(arg, dvd_authinfo, ai); + 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) + void __user *arg) { int ret; long next = 0; - cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); ret = cdrom_get_next_writable(cdi, &next); if (ret) return ret; - IOCTL_OUT(arg, long, next); + 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) + void __user *arg) { int ret; long last = 0; - cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); + cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); ret = cdrom_get_last_written(cdi, &last); if (ret) return ret; - IOCTL_OUT(arg, long, last); - return 0; + 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, @@ -3212,195 +3313,98 @@ static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, return -ENOTTY; } -static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type, - track_information *ti) -{ - 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; - - if ((ret = cdo->generic_packet(cdi, &cgc))) - 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; - if ((ret = cdo->generic_packet(cdi, &cgc))) - return ret; - - /* return actual fill size */ - return buflen; -} - -/* requires CD R/RW */ -static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di) -{ - 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; - - if ((ret = cdo->generic_packet(cdi, &cgc))) - 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; - if ((ret = cdo->generic_packet(cdi, &cgc))) - 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) +/* + * 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, + unsigned int cmd, unsigned long arg) { - 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; + void __user *argp = (void __user *)arg; + int ret; - /* 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); + 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_TIMED_MEDIA_CHANGE: + return cdrom_ioctl_timed_media_change(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); } - 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: - 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; + /* + * 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; } - /* 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; + /* + * 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); } -use_last_written: - if ((ret = cdrom_get_last_written(cdi, next_writable))) { - *next_writable = 0; - return ret; - } else { - *next_writable += 7; - return 0; - } + 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_media_changed); -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 @@ -3465,8 +3469,8 @@ static int cdrom_print_info(const char *header, int val, char *info, return 0; } -static int cdrom_sysctl_info(ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +static int cdrom_sysctl_info(const struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) { int pos; char *info = cdrom_sysctl_settings.info; @@ -3578,8 +3582,8 @@ static void cdrom_update_settings(void) mutex_unlock(&cdrom_mutex); } -static int cdrom_sysctl_handler(ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +static int cdrom_sysctl_handler(const struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) { int ret; @@ -3604,7 +3608,7 @@ static int cdrom_sysctl_handler(ctl_table *ctl, int write, } /* Place files in /proc/sys/dev/cdrom */ -static ctl_table cdrom_table[] = { +static const struct ctl_table cdrom_table[] = { { .procname = "info", .data = &cdrom_sysctl_settings.info, @@ -3647,39 +3651,17 @@ static ctl_table cdrom_table[] = { .mode = 0644, .proc_handler = cdrom_sysctl_handler }, - { } -}; - -static ctl_table cdrom_cdrom_table[] = { - { - .procname = "cdrom", - .maxlen = 0, - .mode = 0555, - .child = cdrom_table, - }, - { } -}; - -/* Make sure that /proc/sys/dev is there */ -static 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 int initialized; + static atomic_t initialized = ATOMIC_INIT(0); - if (initialized == 1) + if (!atomic_add_unless(&initialized, 1, 1)) return; - cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); + cdrom_sysctl_header = register_sysctl("dev/cdrom", cdrom_table); /* set the defaults */ cdrom_sysctl_settings.autoclose = autoclose; @@ -3687,14 +3669,11 @@ static void cdrom_sysctl_register(void) cdrom_sysctl_settings.debug = debug; cdrom_sysctl_settings.lock = lockdoor; cdrom_sysctl_settings.check = check_media_type; - - initialized = 1; } static void cdrom_sysctl_unregister(void) { - if (cdrom_sysctl_header) - unregister_sysctl_table(cdrom_sysctl_header); + unregister_sysctl_table(cdrom_sysctl_header); } #else /* CONFIG_SYSCTL */ @@ -3724,4 +3703,5 @@ static void __exit cdrom_exit(void) module_init(cdrom_init); module_exit(cdrom_exit); +MODULE_DESCRIPTION("Uniform CD-ROM driver"); MODULE_LICENSE("GPL"); |