diff options
| -rw-r--r-- | fs/hfs/mdb.c | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/fs/hfs/mdb.c b/fs/hfs/mdb.c index 460281b1299e..cdf0edeeb278 100644 --- a/fs/hfs/mdb.c +++ b/fs/hfs/mdb.c @@ -32,29 +32,35 @@ static int hfs_get_last_session(struct super_block *sb, sector_t *start, sector_t *size) { - struct cdrom_multisession ms_info; - struct cdrom_tocentry te; - int res; + struct cdrom_device_info *cdi = disk_to_cdi(sb->s_bdev->bd_disk); /* default values */ *start = 0; *size = i_size_read(sb->s_bdev->bd_inode) >> 9; if (HFS_SB(sb)->session >= 0) { + struct cdrom_tocentry te; + + if (!cdi) + return -EINVAL; + te.cdte_track = HFS_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; + if (cdrom_read_tocentry(cdi, &te) || + (te.cdte_ctrl & CDROM_DATA_TRACK) != 4) { + pr_err("invalid session number or type of track\n"); + return -EINVAL; } - pr_err("invalid session number or type of track\n"); - return -EINVAL; + + *start = (sector_t)te.cdte_addr.lba << 2; + } else if (cdi) { + struct cdrom_multisession ms_info; + + ms_info.addr_format = CDROM_LBA; + if (cdrom_multisession(cdi, &ms_info) == 0 && ms_info.xa_flag) + *start = (sector_t)ms_info.addr.lba << 2; } - 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; } |