static int hfsplus_get_last_session(struct super_block *sb,
sector_t *start, sector_t *size)
{
struct cdrom_multisession ms_info;
struct cdrom_tocentry te;
int res;
/* default values */
*start = 0;
*size = sb->s_bdev->bd_inode->i_size >> 9;
if (HFSPLUS_SB(sb)->session >= 0) {
te.cdte_track = HFSPLUS_SB(sb)->session;
te.cdte_format = CDROM_LBA;
res = ioctl_by_bdev(sb->s_bdev,
CDROMREADTOCENTRY, (unsigned long)&te);
if (!res && (te.cdte_ctrl & CDROM_DATA_TRACK) == 4) {
*start = (sector_t)te.cdte_addr.lba << 2;
return 0;
}
pr_err("invalid session number or type of track\n");
return -EINVAL;
}
ms_info.addr_format = CDROM_LBA;
res = ioctl_by_bdev(sb->s_bdev, CDROMMULTISESSION,
(unsigned long)&ms_info);
if (!res && ms_info.xa_flag)
*start = (sector_t)ms_info.addr.lba << 2;
return 0;
}
/*
* Trigger a partition detection.
*/
int dasd_scan_partitions(struct dasd_block *block)
{
struct block_device *bdev;
bdev = bdget_disk(block->gdp, 0);
if (!bdev || blkdev_get(bdev, FMODE_READ) < 0)
return -ENODEV;
/*
* See fs/partition/check.c:register_disk,rescan_partitions
* Can't call rescan_partitions directly. Use ioctl.
*/
ioctl_by_bdev(bdev, BLKRRPART, 0);
/*
* Since the matching blkdev_put call to the blkdev_get in
* this function is not called before dasd_destroy_partitions
* the offline open_count limit needs to be increased from
* 0 to 1. This is done by setting device->bdev (see
* dasd_generic_set_offline). As long as the partition
* detection is running no offline should be allowed. That
* is why the assignment to device->bdev is done AFTER
* the BLKRRPART ioctl.
*/
block->bdev = bdev;
return 0;
}
unsigned int
udf_get_last_session(struct super_block *sb)
{
struct cdrom_multisession ms_info;
unsigned int vol_desc_start;
struct block_device *bdev = sb->s_bdev;
int i;
vol_desc_start=0;
ms_info.addr_format=CDROM_LBA;
i = ioctl_by_bdev(bdev, CDROMMULTISESSION, (unsigned long) &ms_info);
#define WE_OBEY_THE_WRITTEN_STANDARDS 1
if (i == 0)
{
udf_debug("XA disk: %s, vol_desc_start=%d\n",
(ms_info.xa_flag ? "yes" : "no"), ms_info.addr.lba);
#if WE_OBEY_THE_WRITTEN_STANDARDS
if (ms_info.xa_flag) /* necessary for a valid ms_info.addr */
#endif
vol_desc_start = ms_info.addr.lba;
}
else
{
udf_debug("CDROMMULTISESSION not supported: rc=%d\n", i);
}
return vol_desc_start;
}
/*
* Remove all inodes in the system for a device, delete the
* partitions and make device unusable by setting its size to zero.
*/
void dasd_destroy_partitions(struct dasd_block *block)
{
/* The two structs have 168/176 byte on 31/64 bit. */
struct blkpg_partition bpart;
struct blkpg_ioctl_arg barg;
struct block_device *bdev;
/*
* Get the bdev pointer from the device structure and clear
* device->bdev to lower the offline open_count limit again.
*/
bdev = block->bdev;
block->bdev = NULL;
/*
* See fs/partition/check.c:delete_partition
* Can't call delete_partitions directly. Use ioctl.
* The ioctl also does locking and invalidation.
*/
memset(&bpart, 0, sizeof(struct blkpg_partition));
memset(&barg, 0, sizeof(struct blkpg_ioctl_arg));
barg.data = (void __force __user *) &bpart;
barg.op = BLKPG_DEL_PARTITION;
for (bpart.pno = block->gdp->minors - 1; bpart.pno > 0; bpart.pno--)
ioctl_by_bdev(bdev, BLKPG, (unsigned long) &barg);
invalidate_partition(block->gdp, 0);
/* Matching blkdev_put to the blkdev_get in dasd_scan_partitions. */
blkdev_put(bdev, FMODE_READ);
set_capacity(block->gdp, 0);
}
/*
* Forward ioctls to the underlying block device.
*/
static int
raw_ioctl(struct inode *inode, struct file *filp,
unsigned int command, unsigned long arg)
{
struct block_device *bdev = filp->private_data;
return ioctl_by_bdev(bdev, command, arg);
}
unsigned long
udf_get_last_block(struct super_block *sb)
{
struct block_device *bdev = sb->s_bdev;
int ret;
unsigned long lblock = 0;
ret = ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long) &lblock);
if (ret) /* Hard Disk */
{
ret = ioctl_by_bdev(bdev, BLKGETSIZE, (unsigned long) &lblock);
if (!ret && lblock != 0x7FFFFFFF)
lblock = ((512 * lblock) / sb->s_blocksize);
}
if (!ret && lblock)
return lblock - 1;
else
return 0;
}
unsigned long
udf_get_last_block(struct super_block *sb)
{
struct block_device *bdev = sb->s_bdev;
unsigned long lblock = 0;
if (ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long) &lblock))
lblock = bdev->bd_inode->i_size >> sb->s_blocksize_bits;
if (lblock)
return lblock - 1;
else
return 0;
}
unsigned int udf_get_last_session(struct super_block *sb)
{
struct cdrom_multisession ms_info;
unsigned int vol_desc_start;
struct block_device *bdev = sb->s_bdev;
int i;
vol_desc_start = 0;
ms_info.addr_format = CDROM_LBA;
i = ioctl_by_bdev(bdev, CDROMMULTISESSION, (unsigned long)&ms_info);
if (i == 0) {
udf_debug("XA disk: %s, vol_desc_start=%d\n",
<<<<<<< HEAD
ms_info.xa_flag ? "yes" : "no", ms_info.addr.lba);
=======
<<<<<<< HEAD
unsigned long udf_get_last_block(struct super_block *sb)
{
struct block_device *bdev = sb->s_bdev;
unsigned long lblock = 0;
/*
* ioctl failed or returned obviously bogus value?
* Try using the device size...
*/
if (ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long) &lblock) ||
lblock == 0)
lblock = bdev->bd_inode->i_size >> sb->s_blocksize_bits;
if (lblock)
return lblock - 1;
else
return 0;
}
