-/* linux/drivers/cdrom/cdrom.c.
+/* linux/drivers/cdrom/cdrom.c
Copyright (c) 1996, 1997 David A. van Leeuwen.
Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org>
Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk>
module_param(check_media_type, bool, 0);
module_param(mrw_format_restart, bool, 0);
-static DEFINE_SPINLOCK(cdrom_lock);
+static DEFINE_MUTEX(cdrom_mutex);
static const char *mrw_format_status[] = {
"not mrw",
/* 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.
+ */
+#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,
cdo->generic_packet = cdrom_dummy_generic_packet;
cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
- spin_lock(&cdrom_lock);
+ mutex_lock(&cdrom_mutex);
cdi->next = topCdromPtr;
topCdromPtr = cdi;
- spin_unlock(&cdrom_lock);
+ mutex_unlock(&cdrom_mutex);
return 0;
}
#undef ENSURE
cdinfo(CD_OPEN, "entering unregister_cdrom\n");
prev = NULL;
- spin_lock(&cdrom_lock);
+ mutex_lock(&cdrom_mutex);
cdi = topCdromPtr;
while (cdi && cdi != unreg) {
prev = cdi;
}
if (cdi == NULL) {
- spin_unlock(&cdrom_lock);
+ mutex_unlock(&cdrom_mutex);
return -2;
}
if (prev)
else
topCdromPtr = cdi->next;
- spin_unlock(&cdrom_lock);
+ mutex_unlock(&cdrom_mutex);
if (cdi->exit)
cdi->exit(cdi);
{
struct packet_command cgc;
char buffer[16];
- __u16 *feature_code;
+ __be16 *feature_code;
int ret;
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
return ret;
- feature_code = (__u16 *) &buffer[sizeof(struct feature_header)];
+ feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
if (be16_to_cpu(*feature_code) == CDF_HWDM)
return 0;
check_disk_change(ip->i_bdev);
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");
+ }
cdi->ops->release(cdi);
err:
cdi->use_count--;
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)current->pid);
+ (unsigned int)task_pid_nr(current));
ret=-EMEDIUMTYPE;
goto clean_up_and_return;
}
cgc->buffer = (char *) buf;
cgc->buflen = len;
cgc->data_direction = type;
- cgc->timeout = 5*HZ;
+ cgc->timeout = CDROM_DEF_TIMEOUT;
}
/* DVD handling */
size = sizeof(s->disckey.value) + 4;
- if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
+ if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
return -ENOMEM;
init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
size = sizeof(s->manufact.value) + 4;
- if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
+ if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
return -ENOMEM;
init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
int lba, int nframes)
{
- request_queue_t *q = cdi->disk->queue;
+ struct request_queue *q = cdi->disk->queue;
struct request *rq;
struct bio *bio;
unsigned int len;
rq->cmd[9] = 0xf8;
rq->cmd_len = 12;
- rq->flags |= REQ_BLOCK_PC;
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->timeout = 60 * HZ;
bio = rq->bio;
- if (rq->bio)
- blk_queue_bounce(q, &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, len))
+ if (blk_rq_unmap_user(bio))
ret = -EFAULT;
if (ret)
return -EACCES;
if (!CDROM_CAN(CDC_RESET))
return -ENOSYS;
- invalidate_bdev(bdev, 0);
+ invalidate_bdev(bdev);
return cdi->ops->reset(cdi);
}
{
void __user *argp = (void __user *)arg;
int ret;
+ struct gendisk *disk = ip->i_bdev->bd_disk;
/*
* Try the generic SCSI command ioctl's first.
*/
- ret = scsi_cmd_ioctl(file, ip->i_bdev->bd_disk, cmd, argp);
+ ret = scsi_cmd_ioctl(file, disk->queue, disk, cmd, argp);
if (ret != -ENOTTY)
return ret;
/* FIXME: we need upper bound checking, too!! */
if (lba < 0)
return -EINVAL;
- cgc.buffer = (char *) kmalloc(blocksize, GFP_KERNEL);
+ cgc.buffer = kmalloc(blocksize, GFP_KERNEL);
if (cgc.buffer == NULL)
return -ENOMEM;
memset(&sense, 0, sizeof(sense));
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(*(unsigned short *)(buffer+6));
+ offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6));
if (offset + 16 > sizeof(buffer))
return -E2BIG;
int size = sizeof(dvd_struct);
if (!CDROM_CAN(CDC_DVD))
return -ENOSYS;
- if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL)
+ if ((s = kmalloc(size, GFP_KERNEL)) == NULL)
return -ENOMEM;
cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
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;
+
+ for (cdi = topCdromPtr; cdi; cdi = cdi->next) {
+ 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:
+ printk(KERN_INFO "cdrom: invalid option%d\n", option);
+ return 1;
+ }
+ if (!ret)
+ return 1;
+ *pos += ret;
+ }
+
+ return 0;
+}
+
static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
- int pos;
- struct cdrom_device_info *cdi;
+ 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");
- pos += sprintf(info+pos, "\ndrive name:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%s", cdi->name);
-
- pos += sprintf(info+pos, "\ndrive speed:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", cdi->speed);
-
- pos += sprintf(info+pos, "\ndrive # of slots:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", cdi->capacity);
-
- pos += sprintf(info+pos, "\nCan close tray:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CLOSE_TRAY) != 0);
-
- pos += sprintf(info+pos, "\nCan open tray:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_OPEN_TRAY) != 0);
-
- pos += sprintf(info+pos, "\nCan lock tray:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_LOCK) != 0);
-
- pos += sprintf(info+pos, "\nCan change speed:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_SPEED) != 0);
-
- pos += sprintf(info+pos, "\nCan select disk:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_DISC) != 0);
-
- pos += sprintf(info+pos, "\nCan read multisession:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MULTI_SESSION) != 0);
-
- pos += sprintf(info+pos, "\nCan read MCN:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MCN) != 0);
-
- pos += sprintf(info+pos, "\nReports media changed:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MEDIA_CHANGED) != 0);
-
- pos += sprintf(info+pos, "\nCan play audio:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_PLAY_AUDIO) != 0);
-
- pos += sprintf(info+pos, "\nCan write CD-R:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_R) != 0);
-
- pos += sprintf(info+pos, "\nCan write CD-RW:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_RW) != 0);
-
- pos += sprintf(info+pos, "\nCan read DVD:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD) != 0);
-
- pos += sprintf(info+pos, "\nCan write DVD-R:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_R) != 0);
-
- pos += sprintf(info+pos, "\nCan write DVD-RAM:");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_RAM) != 0);
-
- pos += sprintf(info+pos, "\nCan read MRW:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW) != 0);
-
- pos += sprintf(info+pos, "\nCan write MRW:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW_W) != 0);
-
- pos += sprintf(info+pos, "\nCan write RAM:\t");
- for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
- pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_RAM) != 0);
-
- strcpy(info+pos,"\n\n");
-
- return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
+ 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, filp, buffer, lenp, ppos);
+done:
+ printk(KERN_INFO "cdrom: info buffer too small\n");
+ goto doit;
}
/* Unfortunately, per device settings are not implemented through
static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
- int *valp = ctl->data;
- int val = *valp;
int ret;
ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
- if (write && *valp != val) {
+ if (write) {
/* we only care for 1 or 0. */
- if (*valp)
- *valp = 1;
- else
- *valp = 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;
- switch (ctl->ctl_name) {
- case DEV_CDROM_AUTOCLOSE: {
- if (valp == &cdrom_sysctl_settings.autoclose)
- autoclose = cdrom_sysctl_settings.autoclose;
- break;
- }
- case DEV_CDROM_AUTOEJECT: {
- if (valp == &cdrom_sysctl_settings.autoeject)
- autoeject = cdrom_sysctl_settings.autoeject;
- break;
- }
- case DEV_CDROM_DEBUG: {
- if (valp == &cdrom_sysctl_settings.debug)
- debug = cdrom_sysctl_settings.debug;
- break;
- }
- case DEV_CDROM_LOCK: {
- if (valp == &cdrom_sysctl_settings.lock)
- lockdoor = cdrom_sysctl_settings.lock;
- break;
- }
- case DEV_CDROM_CHECK_MEDIA: {
- if (valp == &cdrom_sysctl_settings.check)
- check_media_type = cdrom_sysctl_settings.check;
- break;
- }
- }
/* 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. */
/* Place files in /proc/sys/dev/cdrom */
static ctl_table cdrom_table[] = {
{
- .ctl_name = DEV_CDROM_INFO,
.procname = "info",
.data = &cdrom_sysctl_settings.info,
.maxlen = CDROM_STR_SIZE,
.proc_handler = &cdrom_sysctl_info,
},
{
- .ctl_name = DEV_CDROM_AUTOCLOSE,
.procname = "autoclose",
.data = &cdrom_sysctl_settings.autoclose,
.maxlen = sizeof(int),
.proc_handler = &cdrom_sysctl_handler,
},
{
- .ctl_name = DEV_CDROM_AUTOEJECT,
.procname = "autoeject",
.data = &cdrom_sysctl_settings.autoeject,
.maxlen = sizeof(int),
.proc_handler = &cdrom_sysctl_handler,
},
{
- .ctl_name = DEV_CDROM_DEBUG,
.procname = "debug",
.data = &cdrom_sysctl_settings.debug,
.maxlen = sizeof(int),
.proc_handler = &cdrom_sysctl_handler,
},
{
- .ctl_name = DEV_CDROM_LOCK,
.procname = "lock",
.data = &cdrom_sysctl_settings.lock,
.maxlen = sizeof(int),
.proc_handler = &cdrom_sysctl_handler,
},
{
- .ctl_name = DEV_CDROM_CHECK_MEDIA,
.procname = "check_media",
.data = &cdrom_sysctl_settings.check,
.maxlen = sizeof(int),
if (initialized == 1)
return;
- cdrom_sysctl_header = register_sysctl_table(cdrom_root_table, 1);
- if (cdrom_root_table->ctl_name && cdrom_root_table->child->de)
- cdrom_root_table->child->de->owner = THIS_MODULE;
+ cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
/* set the defaults */
cdrom_sysctl_settings.autoclose = autoclose;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff