5 * Super block routines for the OSTA-UDF(tm) filesystem.
8 * OSTA-UDF(tm) = Optical Storage Technology Association
9 * Universal Disk Format.
11 * This code is based on version 2.00 of the UDF specification,
12 * and revision 3 of the ECMA 167 standard [equivalent to ISO 13346].
13 * http://www.osta.org/
18 * This file is distributed under the terms of the GNU General Public
19 * License (GPL). Copies of the GPL can be obtained from:
20 * ftp://prep.ai.mit.edu/pub/gnu/GPL
21 * Each contributing author retains all rights to their own work.
23 * (C) 1998 Dave Boynton
24 * (C) 1998-2004 Ben Fennema
25 * (C) 2000 Stelias Computing Inc
29 * 09/24/98 dgb changed to allow compiling outside of kernel, and
30 * added some debugging.
31 * 10/01/98 dgb updated to allow (some) possibility of compiling w/2.0.34
32 * 10/16/98 attempting some multi-session support
33 * 10/17/98 added freespace count for "df"
34 * 11/11/98 gr added novrs option
35 * 11/26/98 dgb added fileset,anchor mount options
36 * 12/06/98 blf really hosed things royally. vat/sparing support. sequenced vol descs
37 * rewrote option handling based on isofs
38 * 12/20/98 find the free space bitmap (if it exists)
43 #include <linux/blkdev.h>
44 #include <linux/slab.h>
45 #include <linux/kernel.h>
46 #include <linux/module.h>
47 #include <linux/parser.h>
48 #include <linux/stat.h>
49 #include <linux/cdrom.h>
50 #include <linux/nls.h>
51 #include <linux/smp_lock.h>
52 #include <linux/buffer_head.h>
53 #include <linux/vfs.h>
54 #include <linux/vmalloc.h>
55 #include <asm/byteorder.h>
57 #include <linux/udf_fs.h>
61 #include <linux/init.h>
62 #include <asm/uaccess.h>
64 #define VDS_POS_PRIMARY_VOL_DESC 0
65 #define VDS_POS_UNALLOC_SPACE_DESC 1
66 #define VDS_POS_LOGICAL_VOL_DESC 2
67 #define VDS_POS_PARTITION_DESC 3
68 #define VDS_POS_IMP_USE_VOL_DESC 4
69 #define VDS_POS_VOL_DESC_PTR 5
70 #define VDS_POS_TERMINATING_DESC 6
71 #define VDS_POS_LENGTH 7
73 static char error_buf
[1024];
75 /* These are the "meat" - everything else is stuffing */
76 static int udf_fill_super(struct super_block
*, void *, int);
77 static void udf_put_super(struct super_block
*);
78 static void udf_write_super(struct super_block
*);
79 static int udf_remount_fs(struct super_block
*, int *, char *);
80 static int udf_check_valid(struct super_block
*, int, int);
81 static int udf_vrs(struct super_block
*sb
, int silent
);
82 static int udf_load_partition(struct super_block
*, kernel_lb_addr
*);
83 static int udf_load_logicalvol(struct super_block
*, struct buffer_head
*, kernel_lb_addr
*);
84 static void udf_load_logicalvolint(struct super_block
*, kernel_extent_ad
);
85 static void udf_find_anchor(struct super_block
*);
86 static int udf_find_fileset(struct super_block
*, kernel_lb_addr
*, kernel_lb_addr
*);
87 static void udf_load_pvoldesc(struct super_block
*, struct buffer_head
*);
88 static void udf_load_fileset(struct super_block
*, struct buffer_head
*, kernel_lb_addr
*);
89 static void udf_load_partdesc(struct super_block
*, struct buffer_head
*);
90 static void udf_open_lvid(struct super_block
*);
91 static void udf_close_lvid(struct super_block
*);
92 static unsigned int udf_count_free(struct super_block
*);
93 static int udf_statfs(struct dentry
*, struct kstatfs
*);
95 /* UDF filesystem type */
96 static int udf_get_sb(struct file_system_type
*fs_type
,
97 int flags
, const char *dev_name
, void *data
, struct vfsmount
*mnt
)
99 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, udf_fill_super
, mnt
);
102 static struct file_system_type udf_fstype
= {
103 .owner
= THIS_MODULE
,
105 .get_sb
= udf_get_sb
,
106 .kill_sb
= kill_block_super
,
107 .fs_flags
= FS_REQUIRES_DEV
,
110 static kmem_cache_t
* udf_inode_cachep
;
112 static struct inode
*udf_alloc_inode(struct super_block
*sb
)
114 struct udf_inode_info
*ei
;
115 ei
= (struct udf_inode_info
*)kmem_cache_alloc(udf_inode_cachep
, SLAB_KERNEL
);
118 return &ei
->vfs_inode
;
121 static void udf_destroy_inode(struct inode
*inode
)
123 kmem_cache_free(udf_inode_cachep
, UDF_I(inode
));
126 static void init_once(void * foo
, kmem_cache_t
* cachep
, unsigned long flags
)
128 struct udf_inode_info
*ei
= (struct udf_inode_info
*) foo
;
130 if ((flags
& (SLAB_CTOR_VERIFY
|SLAB_CTOR_CONSTRUCTOR
)) ==
131 SLAB_CTOR_CONSTRUCTOR
)
133 ei
->i_ext
.i_data
= NULL
;
134 inode_init_once(&ei
->vfs_inode
);
138 static int init_inodecache(void)
140 udf_inode_cachep
= kmem_cache_create("udf_inode_cache",
141 sizeof(struct udf_inode_info
),
142 0, (SLAB_RECLAIM_ACCOUNT
|
145 if (udf_inode_cachep
== NULL
)
150 static void destroy_inodecache(void)
152 if (kmem_cache_destroy(udf_inode_cachep
))
153 printk(KERN_INFO
"udf_inode_cache: not all structures were freed\n");
156 /* Superblock operations */
157 static struct super_operations udf_sb_ops
= {
158 .alloc_inode
= udf_alloc_inode
,
159 .destroy_inode
= udf_destroy_inode
,
160 .write_inode
= udf_write_inode
,
161 .delete_inode
= udf_delete_inode
,
162 .clear_inode
= udf_clear_inode
,
163 .put_super
= udf_put_super
,
164 .write_super
= udf_write_super
,
165 .statfs
= udf_statfs
,
166 .remount_fs
= udf_remount_fs
,
172 unsigned int blocksize
;
173 unsigned int session
;
174 unsigned int lastblock
;
177 unsigned short partition
;
178 unsigned int fileset
;
179 unsigned int rootdir
;
184 struct nls_table
*nls_map
;
187 static int __init
init_udf_fs(void)
190 err
= init_inodecache();
193 err
= register_filesystem(&udf_fstype
);
198 destroy_inodecache();
203 static void __exit
exit_udf_fs(void)
205 unregister_filesystem(&udf_fstype
);
206 destroy_inodecache();
209 module_init(init_udf_fs
)
210 module_exit(exit_udf_fs
)
216 * Parse mount options.
219 * The following mount options are supported:
221 * gid= Set the default group.
222 * umask= Set the default umask.
223 * uid= Set the default user.
224 * bs= Set the block size.
225 * unhide Show otherwise hidden files.
226 * undelete Show deleted files in lists.
227 * adinicb Embed data in the inode (default)
228 * noadinicb Don't embed data in the inode
229 * shortad Use short ad's
230 * longad Use long ad's (default)
231 * nostrict Unset strict conformance
232 * iocharset= Set the NLS character set
234 * The remaining are for debugging and disaster recovery:
236 * novrs Skip volume sequence recognition
238 * The following expect a offset from 0.
240 * session= Set the CDROM session (default= last session)
241 * anchor= Override standard anchor location. (default= 256)
242 * volume= Override the VolumeDesc location. (unused)
243 * partition= Override the PartitionDesc location. (unused)
244 * lastblock= Set the last block of the filesystem/
246 * The following expect a offset from the partition root.
248 * fileset= Override the fileset block location. (unused)
249 * rootdir= Override the root directory location. (unused)
250 * WARNING: overriding the rootdir to a non-directory may
251 * yield highly unpredictable results.
254 * options Pointer to mount options string.
255 * uopts Pointer to mount options variable.
258 * <return> 1 Mount options parsed okay.
259 * <return> 0 Error parsing mount options.
262 * July 1, 1997 - Andrew E. Mileski
263 * Written, tested, and released.
267 Opt_novrs
, Opt_nostrict
, Opt_bs
, Opt_unhide
, Opt_undelete
,
268 Opt_noadinicb
, Opt_adinicb
, Opt_shortad
, Opt_longad
,
269 Opt_gid
, Opt_uid
, Opt_umask
, Opt_session
, Opt_lastblock
,
270 Opt_anchor
, Opt_volume
, Opt_partition
, Opt_fileset
,
271 Opt_rootdir
, Opt_utf8
, Opt_iocharset
,
272 Opt_err
, Opt_uforget
, Opt_uignore
, Opt_gforget
, Opt_gignore
275 static match_table_t tokens
= {
276 {Opt_novrs
, "novrs"},
277 {Opt_nostrict
, "nostrict"},
279 {Opt_unhide
, "unhide"},
280 {Opt_undelete
, "undelete"},
281 {Opt_noadinicb
, "noadinicb"},
282 {Opt_adinicb
, "adinicb"},
283 {Opt_shortad
, "shortad"},
284 {Opt_longad
, "longad"},
285 {Opt_uforget
, "uid=forget"},
286 {Opt_uignore
, "uid=ignore"},
287 {Opt_gforget
, "gid=forget"},
288 {Opt_gignore
, "gid=ignore"},
291 {Opt_umask
, "umask=%o"},
292 {Opt_session
, "session=%u"},
293 {Opt_lastblock
, "lastblock=%u"},
294 {Opt_anchor
, "anchor=%u"},
295 {Opt_volume
, "volume=%u"},
296 {Opt_partition
, "partition=%u"},
297 {Opt_fileset
, "fileset=%u"},
298 {Opt_rootdir
, "rootdir=%u"},
300 {Opt_iocharset
, "iocharset=%s"},
305 udf_parse_options(char *options
, struct udf_options
*uopt
)
311 uopt
->blocksize
= 2048;
312 uopt
->partition
= 0xFFFF;
313 uopt
->session
= 0xFFFFFFFF;
316 uopt
->volume
= 0xFFFFFFFF;
317 uopt
->rootdir
= 0xFFFFFFFF;
318 uopt
->fileset
= 0xFFFFFFFF;
319 uopt
->nls_map
= NULL
;
324 while ((p
= strsep(&options
, ",")) != NULL
)
326 substring_t args
[MAX_OPT_ARGS
];
331 token
= match_token(p
, tokens
, args
);
337 if (match_int(&args
[0], &option
))
339 uopt
->blocksize
= option
;
342 uopt
->flags
|= (1 << UDF_FLAG_UNHIDE
);
345 uopt
->flags
|= (1 << UDF_FLAG_UNDELETE
);
348 uopt
->flags
&= ~(1 << UDF_FLAG_USE_AD_IN_ICB
);
351 uopt
->flags
|= (1 << UDF_FLAG_USE_AD_IN_ICB
);
354 uopt
->flags
|= (1 << UDF_FLAG_USE_SHORT_AD
);
357 uopt
->flags
&= ~(1 << UDF_FLAG_USE_SHORT_AD
);
360 if (match_int(args
, &option
))
365 if (match_int(args
, &option
))
370 if (match_octal(args
, &option
))
372 uopt
->umask
= option
;
375 uopt
->flags
&= ~(1 << UDF_FLAG_STRICT
);
378 if (match_int(args
, &option
))
380 uopt
->session
= option
;
383 if (match_int(args
, &option
))
385 uopt
->lastblock
= option
;
388 if (match_int(args
, &option
))
390 uopt
->anchor
= option
;
393 if (match_int(args
, &option
))
395 uopt
->volume
= option
;
398 if (match_int(args
, &option
))
400 uopt
->partition
= option
;
403 if (match_int(args
, &option
))
405 uopt
->fileset
= option
;
408 if (match_int(args
, &option
))
410 uopt
->rootdir
= option
;
413 uopt
->flags
|= (1 << UDF_FLAG_UTF8
);
415 #ifdef CONFIG_UDF_NLS
417 uopt
->nls_map
= load_nls(args
[0].from
);
418 uopt
->flags
|= (1 << UDF_FLAG_NLS_MAP
);
422 uopt
->flags
|= (1 << UDF_FLAG_UID_IGNORE
);
425 uopt
->flags
|= (1 << UDF_FLAG_UID_FORGET
);
428 uopt
->flags
|= (1 << UDF_FLAG_GID_IGNORE
);
431 uopt
->flags
|= (1 << UDF_FLAG_GID_FORGET
);
434 printk(KERN_ERR
"udf: bad mount option \"%s\" "
435 "or missing value\n", p
);
443 udf_write_super(struct super_block
*sb
)
446 if (!(sb
->s_flags
& MS_RDONLY
))
453 udf_remount_fs(struct super_block
*sb
, int *flags
, char *options
)
455 struct udf_options uopt
;
457 uopt
.flags
= UDF_SB(sb
)->s_flags
;
458 uopt
.uid
= UDF_SB(sb
)->s_uid
;
459 uopt
.gid
= UDF_SB(sb
)->s_gid
;
460 uopt
.umask
= UDF_SB(sb
)->s_umask
;
462 if ( !udf_parse_options(options
, &uopt
) )
465 UDF_SB(sb
)->s_flags
= uopt
.flags
;
466 UDF_SB(sb
)->s_uid
= uopt
.uid
;
467 UDF_SB(sb
)->s_gid
= uopt
.gid
;
468 UDF_SB(sb
)->s_umask
= uopt
.umask
;
470 if (UDF_SB_LVIDBH(sb
)) {
471 int write_rev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
);
472 if (write_rev
> UDF_MAX_WRITE_VERSION
)
476 if ((*flags
& MS_RDONLY
) == (sb
->s_flags
& MS_RDONLY
))
478 if (*flags
& MS_RDONLY
)
490 * Set the block size to be used in all transfers.
493 * To allow room for a DMA transfer, it is best to guess big when unsure.
494 * This routine picks 2048 bytes as the blocksize when guessing. This
495 * should be adequate until devices with larger block sizes become common.
497 * Note that the Linux kernel can currently only deal with blocksizes of
498 * 512, 1024, 2048, 4096, and 8192 bytes.
501 * sb Pointer to _locked_ superblock.
504 * sb->s_blocksize Blocksize.
505 * sb->s_blocksize_bits log2 of blocksize.
506 * <return> 0 Blocksize is valid.
507 * <return> 1 Blocksize is invalid.
510 * July 1, 1997 - Andrew E. Mileski
511 * Written, tested, and released.
514 udf_set_blocksize(struct super_block
*sb
, int bsize
)
516 if (!sb_min_blocksize(sb
, bsize
)) {
517 udf_debug("Bad block size (%d)\n", bsize
);
518 printk(KERN_ERR
"udf: bad block size (%d)\n", bsize
);
521 return sb
->s_blocksize
;
525 udf_vrs(struct super_block
*sb
, int silent
)
527 struct volStructDesc
*vsd
= NULL
;
530 struct buffer_head
*bh
= NULL
;
535 /* Block size must be a multiple of 512 */
536 if (sb
->s_blocksize
& 511)
539 if (sb
->s_blocksize
< sizeof(struct volStructDesc
))
540 sectorsize
= sizeof(struct volStructDesc
);
542 sectorsize
= sb
->s_blocksize
;
544 sector
+= (UDF_SB_SESSION(sb
) << sb
->s_blocksize_bits
);
546 udf_debug("Starting at sector %u (%ld byte sectors)\n",
547 (sector
>> sb
->s_blocksize_bits
), sb
->s_blocksize
);
548 /* Process the sequence (if applicable) */
549 for (;!nsr02
&& !nsr03
; sector
+= sectorsize
)
552 bh
= udf_tread(sb
, sector
>> sb
->s_blocksize_bits
);
556 /* Look for ISO descriptors */
557 vsd
= (struct volStructDesc
*)(bh
->b_data
+
558 (sector
& (sb
->s_blocksize
- 1)));
560 if (vsd
->stdIdent
[0] == 0)
562 udf_release_data(bh
);
565 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_CD001
, VSD_STD_ID_LEN
))
568 switch (vsd
->structType
)
571 udf_debug("ISO9660 Boot Record found\n");
574 udf_debug("ISO9660 Primary Volume Descriptor found\n");
577 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
580 udf_debug("ISO9660 Volume Partition Descriptor found\n");
583 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
586 udf_debug("ISO9660 VRS (%u) found\n", vsd
->structType
);
590 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_BEA01
, VSD_STD_ID_LEN
))
593 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_TEA01
, VSD_STD_ID_LEN
))
595 udf_release_data(bh
);
598 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR02
, VSD_STD_ID_LEN
))
602 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR03
, VSD_STD_ID_LEN
))
606 udf_release_data(bh
);
613 else if (sector
- (UDF_SB_SESSION(sb
) << sb
->s_blocksize_bits
) == 32768)
623 * Find an anchor volume descriptor.
626 * sb Pointer to _locked_ superblock.
627 * lastblock Last block on media.
630 * <return> 1 if not found, 0 if ok
633 * July 1, 1997 - Andrew E. Mileski
634 * Written, tested, and released.
637 udf_find_anchor(struct super_block
*sb
)
639 int lastblock
= UDF_SB_LASTBLOCK(sb
);
640 struct buffer_head
*bh
= NULL
;
647 int varlastblock
= udf_variable_to_fixed(lastblock
);
648 int last
[] = { lastblock
, lastblock
- 2,
649 lastblock
- 150, lastblock
- 152,
650 varlastblock
, varlastblock
- 2,
651 varlastblock
- 150, varlastblock
- 152 };
655 /* Search for an anchor volume descriptor pointer */
657 /* according to spec, anchor is in either:
661 * however, if the disc isn't closed, it could be 512 */
663 for (i
= 0; !lastblock
&& i
< ARRAY_SIZE(last
); i
++) {
664 if (last
[i
] < 0 || !(bh
= sb_bread(sb
, last
[i
])))
666 ident
= location
= 0;
670 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
671 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
672 udf_release_data(bh
);
675 if (ident
== TAG_IDENT_AVDP
)
677 if (location
== last
[i
] - UDF_SB_SESSION(sb
))
679 lastblock
= UDF_SB_ANCHOR(sb
)[0] = last
[i
] - UDF_SB_SESSION(sb
);
680 UDF_SB_ANCHOR(sb
)[1] = last
[i
] - 256 - UDF_SB_SESSION(sb
);
682 else if (location
== udf_variable_to_fixed(last
[i
]) - UDF_SB_SESSION(sb
))
684 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
685 lastblock
= UDF_SB_ANCHOR(sb
)[0] = udf_variable_to_fixed(last
[i
]) - UDF_SB_SESSION(sb
);
686 UDF_SB_ANCHOR(sb
)[1] = lastblock
- 256 - UDF_SB_SESSION(sb
);
689 udf_debug("Anchor found at block %d, location mismatch %d.\n",
692 else if (ident
== TAG_IDENT_FE
|| ident
== TAG_IDENT_EFE
)
695 UDF_SB_ANCHOR(sb
)[3] = 512;
699 if (last
[i
] < 256 || !(bh
= sb_bread(sb
, last
[i
] - 256)))
701 ident
= location
= 0;
705 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
706 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
707 udf_release_data(bh
);
710 if (ident
== TAG_IDENT_AVDP
&&
711 location
== last
[i
] - 256 - UDF_SB_SESSION(sb
))
714 UDF_SB_ANCHOR(sb
)[1] = last
[i
] - 256;
718 if (last
[i
] < 312 + UDF_SB_SESSION(sb
) || !(bh
= sb_bread(sb
, last
[i
] - 312 - UDF_SB_SESSION(sb
))))
720 ident
= location
= 0;
724 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
725 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
726 udf_release_data(bh
);
729 if (ident
== TAG_IDENT_AVDP
&&
730 location
== udf_variable_to_fixed(last
[i
]) - 256)
732 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
733 lastblock
= udf_variable_to_fixed(last
[i
]);
734 UDF_SB_ANCHOR(sb
)[1] = lastblock
- 256;
743 /* We havn't found the lastblock. check 312 */
744 if ((bh
= sb_bread(sb
, 312 + UDF_SB_SESSION(sb
))))
746 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
747 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
748 udf_release_data(bh
);
750 if (ident
== TAG_IDENT_AVDP
&& location
== 256)
751 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
755 for (i
= 0; i
< ARRAY_SIZE(UDF_SB_ANCHOR(sb
)); i
++) {
756 if (UDF_SB_ANCHOR(sb
)[i
])
758 if (!(bh
= udf_read_tagged(sb
,
759 UDF_SB_ANCHOR(sb
)[i
], UDF_SB_ANCHOR(sb
)[i
], &ident
)))
761 UDF_SB_ANCHOR(sb
)[i
] = 0;
765 udf_release_data(bh
);
766 if ((ident
!= TAG_IDENT_AVDP
) && (i
||
767 (ident
!= TAG_IDENT_FE
&& ident
!= TAG_IDENT_EFE
)))
769 UDF_SB_ANCHOR(sb
)[i
] = 0;
775 UDF_SB_LASTBLOCK(sb
) = lastblock
;
779 udf_find_fileset(struct super_block
*sb
, kernel_lb_addr
*fileset
, kernel_lb_addr
*root
)
781 struct buffer_head
*bh
= NULL
;
785 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
786 fileset
->partitionReferenceNum
!= 0xFFFF)
788 bh
= udf_read_ptagged(sb
, *fileset
, 0, &ident
);
792 else if (ident
!= TAG_IDENT_FSD
)
794 udf_release_data(bh
);
800 if (!bh
) /* Search backwards through the partitions */
802 kernel_lb_addr newfileset
;
806 for (newfileset
.partitionReferenceNum
=UDF_SB_NUMPARTS(sb
)-1;
807 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
808 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
809 fileset
->partitionReferenceNum
== 0xFFFF);
810 newfileset
.partitionReferenceNum
--)
812 lastblock
= UDF_SB_PARTLEN(sb
, newfileset
.partitionReferenceNum
);
813 newfileset
.logicalBlockNum
= 0;
817 bh
= udf_read_ptagged(sb
, newfileset
, 0, &ident
);
820 newfileset
.logicalBlockNum
++;
828 struct spaceBitmapDesc
*sp
;
829 sp
= (struct spaceBitmapDesc
*)bh
->b_data
;
830 newfileset
.logicalBlockNum
+= 1 +
831 ((le32_to_cpu(sp
->numOfBytes
) + sizeof(struct spaceBitmapDesc
) - 1)
832 >> sb
->s_blocksize_bits
);
833 udf_release_data(bh
);
838 *fileset
= newfileset
;
843 newfileset
.logicalBlockNum
++;
844 udf_release_data(bh
);
850 while (newfileset
.logicalBlockNum
< lastblock
&&
851 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
852 fileset
->partitionReferenceNum
== 0xFFFF);
856 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
857 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
)
859 udf_debug("Fileset at block=%d, partition=%d\n",
860 fileset
->logicalBlockNum
, fileset
->partitionReferenceNum
);
862 UDF_SB_PARTITION(sb
) = fileset
->partitionReferenceNum
;
863 udf_load_fileset(sb
, bh
, root
);
864 udf_release_data(bh
);
871 udf_load_pvoldesc(struct super_block
*sb
, struct buffer_head
*bh
)
873 struct primaryVolDesc
*pvoldesc
;
879 pvoldesc
= (struct primaryVolDesc
*)bh
->b_data
;
881 if ( udf_stamp_to_time(&recording
, &recording_usec
,
882 lets_to_cpu(pvoldesc
->recordingDateAndTime
)) )
885 ts
= lets_to_cpu(pvoldesc
->recordingDateAndTime
);
886 udf_debug("recording time %ld/%ld, %04u/%02u/%02u %02u:%02u (%x)\n",
887 recording
, recording_usec
,
888 ts
.year
, ts
.month
, ts
.day
, ts
.hour
, ts
.minute
, ts
.typeAndTimezone
);
889 UDF_SB_RECORDTIME(sb
).tv_sec
= recording
;
890 UDF_SB_RECORDTIME(sb
).tv_nsec
= recording_usec
* 1000;
893 if ( !udf_build_ustr(&instr
, pvoldesc
->volIdent
, 32) )
895 if (udf_CS0toUTF8(&outstr
, &instr
))
897 strncpy( UDF_SB_VOLIDENT(sb
), outstr
.u_name
,
898 outstr
.u_len
> 31 ? 31 : outstr
.u_len
);
899 udf_debug("volIdent[] = '%s'\n", UDF_SB_VOLIDENT(sb
));
903 if ( !udf_build_ustr(&instr
, pvoldesc
->volSetIdent
, 128) )
905 if (udf_CS0toUTF8(&outstr
, &instr
))
906 udf_debug("volSetIdent[] = '%s'\n", outstr
.u_name
);
911 udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
, kernel_lb_addr
*root
)
913 struct fileSetDesc
*fset
;
915 fset
= (struct fileSetDesc
*)bh
->b_data
;
917 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
919 UDF_SB_SERIALNUM(sb
) = le16_to_cpu(fset
->descTag
.tagSerialNum
);
921 udf_debug("Rootdir at block=%d, partition=%d\n",
922 root
->logicalBlockNum
, root
->partitionReferenceNum
);
926 udf_load_partdesc(struct super_block
*sb
, struct buffer_head
*bh
)
928 struct partitionDesc
*p
;
931 p
= (struct partitionDesc
*)bh
->b_data
;
933 for (i
=0; i
<UDF_SB_NUMPARTS(sb
); i
++)
935 udf_debug("Searching map: (%d == %d)\n",
936 UDF_SB_PARTMAPS(sb
)[i
].s_partition_num
, le16_to_cpu(p
->partitionNumber
));
937 if (UDF_SB_PARTMAPS(sb
)[i
].s_partition_num
== le16_to_cpu(p
->partitionNumber
))
939 UDF_SB_PARTLEN(sb
,i
) = le32_to_cpu(p
->partitionLength
); /* blocks */
940 UDF_SB_PARTROOT(sb
,i
) = le32_to_cpu(p
->partitionStartingLocation
);
941 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_READ_ONLY
)
942 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_READ_ONLY
;
943 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_WRITE_ONCE
)
944 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_WRITE_ONCE
;
945 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_REWRITABLE
)
946 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_REWRITABLE
;
947 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_OVERWRITABLE
)
948 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_OVERWRITABLE
;
950 if (!strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR02
) ||
951 !strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR03
))
953 struct partitionHeaderDesc
*phd
;
955 phd
= (struct partitionHeaderDesc
*)(p
->partitionContentsUse
);
956 if (phd
->unallocSpaceTable
.extLength
)
958 kernel_lb_addr loc
= { le32_to_cpu(phd
->unallocSpaceTable
.extPosition
), i
};
960 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_table
=
962 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_UNALLOC_TABLE
;
963 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
964 i
, UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_table
->i_ino
);
966 if (phd
->unallocSpaceBitmap
.extLength
)
968 UDF_SB_ALLOC_BITMAP(sb
, i
, s_uspace
);
969 if (UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
!= NULL
)
971 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
->s_extLength
=
972 le32_to_cpu(phd
->unallocSpaceBitmap
.extLength
);
973 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
->s_extPosition
=
974 le32_to_cpu(phd
->unallocSpaceBitmap
.extPosition
);
975 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_UNALLOC_BITMAP
;
976 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
977 i
, UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
->s_extPosition
);
980 if (phd
->partitionIntegrityTable
.extLength
)
981 udf_debug("partitionIntegrityTable (part %d)\n", i
);
982 if (phd
->freedSpaceTable
.extLength
)
984 kernel_lb_addr loc
= { le32_to_cpu(phd
->freedSpaceTable
.extPosition
), i
};
986 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_table
=
988 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_FREED_TABLE
;
989 udf_debug("freedSpaceTable (part %d) @ %ld\n",
990 i
, UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_table
->i_ino
);
992 if (phd
->freedSpaceBitmap
.extLength
)
994 UDF_SB_ALLOC_BITMAP(sb
, i
, s_fspace
);
995 if (UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
!= NULL
)
997 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
->s_extLength
=
998 le32_to_cpu(phd
->freedSpaceBitmap
.extLength
);
999 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
->s_extPosition
=
1000 le32_to_cpu(phd
->freedSpaceBitmap
.extPosition
);
1001 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_FREED_BITMAP
;
1002 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1003 i
, UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
->s_extPosition
);
1010 if (i
== UDF_SB_NUMPARTS(sb
))
1012 udf_debug("Partition (%d) not found in partition map\n", le16_to_cpu(p
->partitionNumber
));
1016 udf_debug("Partition (%d:%d type %x) starts at physical %d, block length %d\n",
1017 le16_to_cpu(p
->partitionNumber
), i
, UDF_SB_PARTTYPE(sb
,i
),
1018 UDF_SB_PARTROOT(sb
,i
), UDF_SB_PARTLEN(sb
,i
));
1023 udf_load_logicalvol(struct super_block
*sb
, struct buffer_head
* bh
, kernel_lb_addr
*fileset
)
1025 struct logicalVolDesc
*lvd
;
1029 lvd
= (struct logicalVolDesc
*)bh
->b_data
;
1031 UDF_SB_ALLOC_PARTMAPS(sb
, le32_to_cpu(lvd
->numPartitionMaps
));
1034 i
<UDF_SB_NUMPARTS(sb
) && offset
<le32_to_cpu(lvd
->mapTableLength
);
1035 i
++,offset
+=((struct genericPartitionMap
*)&(lvd
->partitionMaps
[offset
]))->partitionMapLength
)
1037 type
= ((struct genericPartitionMap
*)&(lvd
->partitionMaps
[offset
]))->partitionMapType
;
1040 struct genericPartitionMap1
*gpm1
= (struct genericPartitionMap1
*)&(lvd
->partitionMaps
[offset
]);
1041 UDF_SB_PARTTYPE(sb
,i
) = UDF_TYPE1_MAP15
;
1042 UDF_SB_PARTVSN(sb
,i
) = le16_to_cpu(gpm1
->volSeqNum
);
1043 UDF_SB_PARTNUM(sb
,i
) = le16_to_cpu(gpm1
->partitionNum
);
1044 UDF_SB_PARTFUNC(sb
,i
) = NULL
;
1048 struct udfPartitionMap2
*upm2
= (struct udfPartitionMap2
*)&(lvd
->partitionMaps
[offset
]);
1049 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
, strlen(UDF_ID_VIRTUAL
)))
1051 if (le16_to_cpu(((__le16
*)upm2
->partIdent
.identSuffix
)[0]) == 0x0150)
1053 UDF_SB_PARTTYPE(sb
,i
) = UDF_VIRTUAL_MAP15
;
1054 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_virt15
;
1056 else if (le16_to_cpu(((__le16
*)upm2
->partIdent
.identSuffix
)[0]) == 0x0200)
1058 UDF_SB_PARTTYPE(sb
,i
) = UDF_VIRTUAL_MAP20
;
1059 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_virt20
;
1062 else if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_SPARABLE
, strlen(UDF_ID_SPARABLE
)))
1066 struct sparingTable
*st
;
1067 struct sparablePartitionMap
*spm
= (struct sparablePartitionMap
*)&(lvd
->partitionMaps
[offset
]);
1069 UDF_SB_PARTTYPE(sb
,i
) = UDF_SPARABLE_MAP15
;
1070 UDF_SB_TYPESPAR(sb
,i
).s_packet_len
= le16_to_cpu(spm
->packetLength
);
1071 for (j
=0; j
<spm
->numSparingTables
; j
++)
1073 loc
= le32_to_cpu(spm
->locSparingTable
[j
]);
1074 UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
] =
1075 udf_read_tagged(sb
, loc
, loc
, &ident
);
1076 if (UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
] != NULL
)
1078 st
= (struct sparingTable
*)UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
]->b_data
;
1080 strncmp(st
->sparingIdent
.ident
, UDF_ID_SPARING
, strlen(UDF_ID_SPARING
)))
1082 udf_release_data(UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
]);
1083 UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
] = NULL
;
1087 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_spar15
;
1091 udf_debug("Unknown ident: %s\n", upm2
->partIdent
.ident
);
1094 UDF_SB_PARTVSN(sb
,i
) = le16_to_cpu(upm2
->volSeqNum
);
1095 UDF_SB_PARTNUM(sb
,i
) = le16_to_cpu(upm2
->partitionNum
);
1097 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1098 i
, UDF_SB_PARTNUM(sb
,i
), type
, UDF_SB_PARTVSN(sb
,i
));
1103 long_ad
*la
= (long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
1105 *fileset
= lelb_to_cpu(la
->extLocation
);
1106 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1107 fileset
->logicalBlockNum
,
1108 fileset
->partitionReferenceNum
);
1110 if (lvd
->integritySeqExt
.extLength
)
1111 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
1116 * udf_load_logicalvolint
1120 udf_load_logicalvolint(struct super_block
*sb
, kernel_extent_ad loc
)
1122 struct buffer_head
*bh
= NULL
;
1125 while (loc
.extLength
> 0 &&
1126 (bh
= udf_read_tagged(sb
, loc
.extLocation
,
1127 loc
.extLocation
, &ident
)) &&
1128 ident
== TAG_IDENT_LVID
)
1130 UDF_SB_LVIDBH(sb
) = bh
;
1132 if (UDF_SB_LVID(sb
)->nextIntegrityExt
.extLength
)
1133 udf_load_logicalvolint(sb
, leea_to_cpu(UDF_SB_LVID(sb
)->nextIntegrityExt
));
1135 if (UDF_SB_LVIDBH(sb
) != bh
)
1136 udf_release_data(bh
);
1137 loc
.extLength
-= sb
->s_blocksize
;
1140 if (UDF_SB_LVIDBH(sb
) != bh
)
1141 udf_release_data(bh
);
1145 * udf_process_sequence
1148 * Process a main/reserve volume descriptor sequence.
1151 * sb Pointer to _locked_ superblock.
1152 * block First block of first extent of the sequence.
1153 * lastblock Lastblock of first extent of the sequence.
1156 * July 1, 1997 - Andrew E. Mileski
1157 * Written, tested, and released.
1160 udf_process_sequence(struct super_block
*sb
, long block
, long lastblock
, kernel_lb_addr
*fileset
)
1162 struct buffer_head
*bh
= NULL
;
1163 struct udf_vds_record vds
[VDS_POS_LENGTH
];
1164 struct generic_desc
*gd
;
1165 struct volDescPtr
*vdp
;
1170 long next_s
= 0, next_e
= 0;
1172 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
1174 /* Read the main descriptor sequence */
1175 for (;(!done
&& block
<= lastblock
); block
++)
1178 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1182 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1183 gd
= (struct generic_desc
*)bh
->b_data
;
1184 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
1187 case TAG_IDENT_PVD
: /* ISO 13346 3/10.1 */
1188 if (vdsn
>= vds
[VDS_POS_PRIMARY_VOL_DESC
].volDescSeqNum
)
1190 vds
[VDS_POS_PRIMARY_VOL_DESC
].volDescSeqNum
= vdsn
;
1191 vds
[VDS_POS_PRIMARY_VOL_DESC
].block
= block
;
1194 case TAG_IDENT_VDP
: /* ISO 13346 3/10.3 */
1195 if (vdsn
>= vds
[VDS_POS_VOL_DESC_PTR
].volDescSeqNum
)
1197 vds
[VDS_POS_VOL_DESC_PTR
].volDescSeqNum
= vdsn
;
1198 vds
[VDS_POS_VOL_DESC_PTR
].block
= block
;
1200 vdp
= (struct volDescPtr
*)bh
->b_data
;
1201 next_s
= le32_to_cpu(vdp
->nextVolDescSeqExt
.extLocation
);
1202 next_e
= le32_to_cpu(vdp
->nextVolDescSeqExt
.extLength
);
1203 next_e
= next_e
>> sb
->s_blocksize_bits
;
1207 case TAG_IDENT_IUVD
: /* ISO 13346 3/10.4 */
1208 if (vdsn
>= vds
[VDS_POS_IMP_USE_VOL_DESC
].volDescSeqNum
)
1210 vds
[VDS_POS_IMP_USE_VOL_DESC
].volDescSeqNum
= vdsn
;
1211 vds
[VDS_POS_IMP_USE_VOL_DESC
].block
= block
;
1214 case TAG_IDENT_PD
: /* ISO 13346 3/10.5 */
1215 if (!vds
[VDS_POS_PARTITION_DESC
].block
)
1216 vds
[VDS_POS_PARTITION_DESC
].block
= block
;
1218 case TAG_IDENT_LVD
: /* ISO 13346 3/10.6 */
1219 if (vdsn
>= vds
[VDS_POS_LOGICAL_VOL_DESC
].volDescSeqNum
)
1221 vds
[VDS_POS_LOGICAL_VOL_DESC
].volDescSeqNum
= vdsn
;
1222 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
= block
;
1225 case TAG_IDENT_USD
: /* ISO 13346 3/10.8 */
1226 if (vdsn
>= vds
[VDS_POS_UNALLOC_SPACE_DESC
].volDescSeqNum
)
1228 vds
[VDS_POS_UNALLOC_SPACE_DESC
].volDescSeqNum
= vdsn
;
1229 vds
[VDS_POS_UNALLOC_SPACE_DESC
].block
= block
;
1232 case TAG_IDENT_TD
: /* ISO 13346 3/10.9 */
1233 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1238 next_s
= next_e
= 0;
1244 udf_release_data(bh
);
1246 for (i
=0; i
<VDS_POS_LENGTH
; i
++)
1250 bh
= udf_read_tagged(sb
, vds
[i
].block
, vds
[i
].block
, &ident
);
1252 if (i
== VDS_POS_PRIMARY_VOL_DESC
)
1253 udf_load_pvoldesc(sb
, bh
);
1254 else if (i
== VDS_POS_LOGICAL_VOL_DESC
)
1255 udf_load_logicalvol(sb
, bh
, fileset
);
1256 else if (i
== VDS_POS_PARTITION_DESC
)
1258 struct buffer_head
*bh2
= NULL
;
1259 udf_load_partdesc(sb
, bh
);
1260 for (j
=vds
[i
].block
+1; j
<vds
[VDS_POS_TERMINATING_DESC
].block
; j
++)
1262 bh2
= udf_read_tagged(sb
, j
, j
, &ident
);
1263 gd
= (struct generic_desc
*)bh2
->b_data
;
1264 if (ident
== TAG_IDENT_PD
)
1265 udf_load_partdesc(sb
, bh2
);
1266 udf_release_data(bh2
);
1269 udf_release_data(bh
);
1280 udf_check_valid(struct super_block
*sb
, int novrs
, int silent
)
1286 udf_debug("Validity check skipped because of novrs option\n");
1289 /* Check that it is NSR02 compliant */
1290 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
1291 else if ((block
= udf_vrs(sb
, silent
)) == -1)
1293 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1294 if (!UDF_SB_LASTBLOCK(sb
))
1295 UDF_SB_LASTBLOCK(sb
) = udf_get_last_block(sb
);
1303 udf_load_partition(struct super_block
*sb
, kernel_lb_addr
*fileset
)
1305 struct anchorVolDescPtr
*anchor
;
1307 struct buffer_head
*bh
;
1308 long main_s
, main_e
, reserve_s
, reserve_e
;
1314 for (i
= 0; i
< ARRAY_SIZE(UDF_SB_ANCHOR(sb
)); i
++) {
1315 if (UDF_SB_ANCHOR(sb
)[i
] && (bh
= udf_read_tagged(sb
,
1316 UDF_SB_ANCHOR(sb
)[i
], UDF_SB_ANCHOR(sb
)[i
], &ident
)))
1318 anchor
= (struct anchorVolDescPtr
*)bh
->b_data
;
1320 /* Locate the main sequence */
1321 main_s
= le32_to_cpu( anchor
->mainVolDescSeqExt
.extLocation
);
1322 main_e
= le32_to_cpu( anchor
->mainVolDescSeqExt
.extLength
);
1323 main_e
= main_e
>> sb
->s_blocksize_bits
;
1326 /* Locate the reserve sequence */
1327 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1328 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1329 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1330 reserve_e
+= reserve_s
;
1332 udf_release_data(bh
);
1334 /* Process the main & reserve sequences */
1335 /* responsible for finding the PartitionDesc(s) */
1336 if (!(udf_process_sequence(sb
, main_s
, main_e
, fileset
) &&
1337 udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
)))
1344 if (i
== ARRAY_SIZE(UDF_SB_ANCHOR(sb
))) {
1345 udf_debug("No Anchor block found\n");
1348 udf_debug("Using anchor in block %d\n", UDF_SB_ANCHOR(sb
)[i
]);
1350 for (i
=0; i
<UDF_SB_NUMPARTS(sb
); i
++)
1352 switch UDF_SB_PARTTYPE(sb
, i
)
1354 case UDF_VIRTUAL_MAP15
:
1355 case UDF_VIRTUAL_MAP20
:
1359 if (!UDF_SB_LASTBLOCK(sb
))
1361 UDF_SB_LASTBLOCK(sb
) = udf_get_last_block(sb
);
1362 udf_find_anchor(sb
);
1365 if (!UDF_SB_LASTBLOCK(sb
))
1367 udf_debug("Unable to determine Lastblock (For Virtual Partition)\n");
1371 for (j
=0; j
<UDF_SB_NUMPARTS(sb
); j
++)
1374 UDF_SB_PARTVSN(sb
,i
) == UDF_SB_PARTVSN(sb
,j
) &&
1375 UDF_SB_PARTNUM(sb
,i
) == UDF_SB_PARTNUM(sb
,j
))
1377 ino
.partitionReferenceNum
= j
;
1378 ino
.logicalBlockNum
= UDF_SB_LASTBLOCK(sb
) -
1379 UDF_SB_PARTROOT(sb
,j
);
1384 if (j
== UDF_SB_NUMPARTS(sb
))
1387 if (!(UDF_SB_VAT(sb
) = udf_iget(sb
, ino
)))
1390 if (UDF_SB_PARTTYPE(sb
,i
) == UDF_VIRTUAL_MAP15
)
1392 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
= udf_ext0_offset(UDF_SB_VAT(sb
));
1393 UDF_SB_TYPEVIRT(sb
,i
).s_num_entries
= (UDF_SB_VAT(sb
)->i_size
- 36) >> 2;
1395 else if (UDF_SB_PARTTYPE(sb
,i
) == UDF_VIRTUAL_MAP20
)
1397 struct buffer_head
*bh
= NULL
;
1400 pos
= udf_block_map(UDF_SB_VAT(sb
), 0);
1401 bh
= sb_bread(sb
, pos
);
1402 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
=
1403 le16_to_cpu(((struct virtualAllocationTable20
*)bh
->b_data
+ udf_ext0_offset(UDF_SB_VAT(sb
)))->lengthHeader
) +
1404 udf_ext0_offset(UDF_SB_VAT(sb
));
1405 UDF_SB_TYPEVIRT(sb
,i
).s_num_entries
= (UDF_SB_VAT(sb
)->i_size
-
1406 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
) >> 2;
1407 udf_release_data(bh
);
1409 UDF_SB_PARTROOT(sb
,i
) = udf_get_pblock(sb
, 0, i
, 0);
1410 UDF_SB_PARTLEN(sb
,i
) = UDF_SB_PARTLEN(sb
,ino
.partitionReferenceNum
);
1417 static void udf_open_lvid(struct super_block
*sb
)
1419 if (UDF_SB_LVIDBH(sb
))
1422 kernel_timestamp cpu_time
;
1424 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1425 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1426 if (udf_time_to_stamp(&cpu_time
, CURRENT_TIME
))
1427 UDF_SB_LVID(sb
)->recordingDateAndTime
= cpu_to_lets(cpu_time
);
1428 UDF_SB_LVID(sb
)->integrityType
= LVID_INTEGRITY_TYPE_OPEN
;
1430 UDF_SB_LVID(sb
)->descTag
.descCRC
=
1431 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb
) + sizeof(tag
),
1432 le16_to_cpu(UDF_SB_LVID(sb
)->descTag
.descCRCLength
), 0));
1434 UDF_SB_LVID(sb
)->descTag
.tagChecksum
= 0;
1435 for (i
=0; i
<16; i
++)
1437 UDF_SB_LVID(sb
)->descTag
.tagChecksum
+=
1438 ((uint8_t *)&(UDF_SB_LVID(sb
)->descTag
))[i
];
1440 mark_buffer_dirty(UDF_SB_LVIDBH(sb
));
1444 static void udf_close_lvid(struct super_block
*sb
)
1446 if (UDF_SB_LVIDBH(sb
) &&
1447 UDF_SB_LVID(sb
)->integrityType
== LVID_INTEGRITY_TYPE_OPEN
)
1450 kernel_timestamp cpu_time
;
1452 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1453 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1454 if (udf_time_to_stamp(&cpu_time
, CURRENT_TIME
))
1455 UDF_SB_LVID(sb
)->recordingDateAndTime
= cpu_to_lets(cpu_time
);
1456 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(UDF_SB_LVIDIU(sb
)->maxUDFWriteRev
))
1457 UDF_SB_LVIDIU(sb
)->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
1458 if (UDF_SB_UDFREV(sb
) > le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
))
1459 UDF_SB_LVIDIU(sb
)->minUDFReadRev
= cpu_to_le16(UDF_SB_UDFREV(sb
));
1460 if (UDF_SB_UDFREV(sb
) > le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
))
1461 UDF_SB_LVIDIU(sb
)->minUDFWriteRev
= cpu_to_le16(UDF_SB_UDFREV(sb
));
1462 UDF_SB_LVID(sb
)->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE
);
1464 UDF_SB_LVID(sb
)->descTag
.descCRC
=
1465 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb
) + sizeof(tag
),
1466 le16_to_cpu(UDF_SB_LVID(sb
)->descTag
.descCRCLength
), 0));
1468 UDF_SB_LVID(sb
)->descTag
.tagChecksum
= 0;
1469 for (i
=0; i
<16; i
++)
1471 UDF_SB_LVID(sb
)->descTag
.tagChecksum
+=
1472 ((uint8_t *)&(UDF_SB_LVID(sb
)->descTag
))[i
];
1474 mark_buffer_dirty(UDF_SB_LVIDBH(sb
));
1482 * Complete the specified super block.
1485 * sb Pointer to superblock to complete - never NULL.
1486 * sb->s_dev Device to read suberblock from.
1487 * options Pointer to mount options.
1488 * silent Silent flag.
1491 * July 1, 1997 - Andrew E. Mileski
1492 * Written, tested, and released.
1494 static int udf_fill_super(struct super_block
*sb
, void *options
, int silent
)
1497 struct inode
*inode
=NULL
;
1498 struct udf_options uopt
;
1499 kernel_lb_addr rootdir
, fileset
;
1500 struct udf_sb_info
*sbi
;
1502 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
) | (1 << UDF_FLAG_STRICT
);
1507 sbi
= kmalloc(sizeof(struct udf_sb_info
), GFP_KERNEL
);
1510 sb
->s_fs_info
= sbi
;
1511 memset(UDF_SB(sb
), 0x00, sizeof(struct udf_sb_info
));
1513 mutex_init(&sbi
->s_alloc_mutex
);
1515 if (!udf_parse_options((char *)options
, &uopt
))
1518 if (uopt
.flags
& (1 << UDF_FLAG_UTF8
) &&
1519 uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
))
1521 udf_error(sb
, "udf_read_super",
1522 "utf8 cannot be combined with iocharset\n");
1525 #ifdef CONFIG_UDF_NLS
1526 if ((uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) && !uopt
.nls_map
)
1528 uopt
.nls_map
= load_nls_default();
1530 uopt
.flags
&= ~(1 << UDF_FLAG_NLS_MAP
);
1532 udf_debug("Using default NLS map\n");
1535 if (!(uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)))
1536 uopt
.flags
|= (1 << UDF_FLAG_UTF8
);
1538 fileset
.logicalBlockNum
= 0xFFFFFFFF;
1539 fileset
.partitionReferenceNum
= 0xFFFF;
1541 UDF_SB(sb
)->s_flags
= uopt
.flags
;
1542 UDF_SB(sb
)->s_uid
= uopt
.uid
;
1543 UDF_SB(sb
)->s_gid
= uopt
.gid
;
1544 UDF_SB(sb
)->s_umask
= uopt
.umask
;
1545 UDF_SB(sb
)->s_nls_map
= uopt
.nls_map
;
1547 /* Set the block size for all transfers */
1548 if (!udf_set_blocksize(sb
, uopt
.blocksize
))
1551 if ( uopt
.session
== 0xFFFFFFFF )
1552 UDF_SB_SESSION(sb
) = udf_get_last_session(sb
);
1554 UDF_SB_SESSION(sb
) = uopt
.session
;
1556 udf_debug("Multi-session=%d\n", UDF_SB_SESSION(sb
));
1558 UDF_SB_LASTBLOCK(sb
) = uopt
.lastblock
;
1559 UDF_SB_ANCHOR(sb
)[0] = UDF_SB_ANCHOR(sb
)[1] = 0;
1560 UDF_SB_ANCHOR(sb
)[2] = uopt
.anchor
;
1561 UDF_SB_ANCHOR(sb
)[3] = 256;
1563 if (udf_check_valid(sb
, uopt
.novrs
, silent
)) /* read volume recognition sequences */
1565 printk("UDF-fs: No VRS found\n");
1569 udf_find_anchor(sb
);
1571 /* Fill in the rest of the superblock */
1572 sb
->s_op
= &udf_sb_ops
;
1575 sb
->s_magic
= UDF_SUPER_MAGIC
;
1576 sb
->s_time_gran
= 1000;
1578 if (udf_load_partition(sb
, &fileset
))
1580 printk("UDF-fs: No partition found (1)\n");
1584 udf_debug("Lastblock=%d\n", UDF_SB_LASTBLOCK(sb
));
1586 if ( UDF_SB_LVIDBH(sb
) )
1588 uint16_t minUDFReadRev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
);
1589 uint16_t minUDFWriteRev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
);
1590 /* uint16_t maxUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev); */
1592 if (minUDFReadRev
> UDF_MAX_READ_VERSION
)
1594 printk("UDF-fs: minUDFReadRev=%x (max is %x)\n",
1595 le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
),
1596 UDF_MAX_READ_VERSION
);
1599 else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
)
1601 sb
->s_flags
|= MS_RDONLY
;
1604 UDF_SB_UDFREV(sb
) = minUDFWriteRev
;
1606 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
1607 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
1608 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
1609 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
1612 if ( !UDF_SB_NUMPARTS(sb
) )
1614 printk("UDF-fs: No partition found (2)\n");
1618 if ( udf_find_fileset(sb
, &fileset
, &rootdir
) )
1620 printk("UDF-fs: No fileset found\n");
1626 kernel_timestamp ts
;
1627 udf_time_to_stamp(&ts
, UDF_SB_RECORDTIME(sb
));
1628 udf_info("UDF %s (%s) Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
1629 UDFFS_VERSION
, UDFFS_DATE
,
1630 UDF_SB_VOLIDENT(sb
), ts
.year
, ts
.month
, ts
.day
, ts
.hour
, ts
.minute
,
1631 ts
.typeAndTimezone
);
1633 if (!(sb
->s_flags
& MS_RDONLY
))
1636 /* Assign the root inode */
1637 /* assign inodes by physical block number */
1638 /* perhaps it's not extensible enough, but for now ... */
1639 inode
= udf_iget(sb
, rootdir
);
1642 printk("UDF-fs: Error in udf_iget, block=%d, partition=%d\n",
1643 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
1647 /* Allocate a dentry for the root inode */
1648 sb
->s_root
= d_alloc_root(inode
);
1651 printk("UDF-fs: Couldn't allocate root dentry\n");
1655 sb
->s_maxbytes
= MAX_LFS_FILESIZE
;
1660 iput(UDF_SB_VAT(sb
));
1661 if (UDF_SB_NUMPARTS(sb
))
1663 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_TABLE
)
1664 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_table
);
1665 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_TABLE
)
1666 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_table
);
1667 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1668 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_uspace
);
1669 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1670 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_fspace
);
1671 if (UDF_SB_PARTTYPE(sb
, UDF_SB_PARTITION(sb
)) == UDF_SPARABLE_MAP15
)
1674 udf_release_data(UDF_SB_TYPESPAR(sb
, UDF_SB_PARTITION(sb
)).s_spar_map
[i
]);
1677 #ifdef CONFIG_UDF_NLS
1678 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
1679 unload_nls(UDF_SB(sb
)->s_nls_map
);
1681 if (!(sb
->s_flags
& MS_RDONLY
))
1683 udf_release_data(UDF_SB_LVIDBH(sb
));
1686 sb
->s_fs_info
= NULL
;
1690 void udf_error(struct super_block
*sb
, const char *function
,
1691 const char *fmt
, ...)
1695 if (!(sb
->s_flags
& MS_RDONLY
))
1700 va_start(args
, fmt
);
1701 vsprintf(error_buf
, fmt
, args
);
1703 printk (KERN_CRIT
"UDF-fs error (device %s): %s: %s\n",
1704 sb
->s_id
, function
, error_buf
);
1707 void udf_warning(struct super_block
*sb
, const char *function
,
1708 const char *fmt
, ...)
1712 va_start (args
, fmt
);
1713 vsprintf(error_buf
, fmt
, args
);
1715 printk(KERN_WARNING
"UDF-fs warning (device %s): %s: %s\n",
1716 sb
->s_id
, function
, error_buf
);
1723 * Prepare for destruction of the superblock.
1726 * Called before the filesystem is unmounted.
1729 * July 1, 1997 - Andrew E. Mileski
1730 * Written, tested, and released.
1733 udf_put_super(struct super_block
*sb
)
1738 iput(UDF_SB_VAT(sb
));
1739 if (UDF_SB_NUMPARTS(sb
))
1741 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_TABLE
)
1742 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_table
);
1743 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_TABLE
)
1744 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_table
);
1745 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1746 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_uspace
);
1747 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1748 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_fspace
);
1749 if (UDF_SB_PARTTYPE(sb
, UDF_SB_PARTITION(sb
)) == UDF_SPARABLE_MAP15
)
1752 udf_release_data(UDF_SB_TYPESPAR(sb
, UDF_SB_PARTITION(sb
)).s_spar_map
[i
]);
1755 #ifdef CONFIG_UDF_NLS
1756 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
1757 unload_nls(UDF_SB(sb
)->s_nls_map
);
1759 if (!(sb
->s_flags
& MS_RDONLY
))
1761 udf_release_data(UDF_SB_LVIDBH(sb
));
1763 kfree(sb
->s_fs_info
);
1764 sb
->s_fs_info
= NULL
;
1771 * Return info about the filesystem.
1774 * Called by sys_statfs()
1777 * July 1, 1997 - Andrew E. Mileski
1778 * Written, tested, and released.
1781 udf_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
1783 struct super_block
*sb
= dentry
->d_sb
;
1785 buf
->f_type
= UDF_SUPER_MAGIC
;
1786 buf
->f_bsize
= sb
->s_blocksize
;
1787 buf
->f_blocks
= UDF_SB_PARTLEN(sb
, UDF_SB_PARTITION(sb
));
1788 buf
->f_bfree
= udf_count_free(sb
);
1789 buf
->f_bavail
= buf
->f_bfree
;
1790 buf
->f_files
= (UDF_SB_LVIDBH(sb
) ?
1791 (le32_to_cpu(UDF_SB_LVIDIU(sb
)->numFiles
) +
1792 le32_to_cpu(UDF_SB_LVIDIU(sb
)->numDirs
)) : 0) + buf
->f_bfree
;
1793 buf
->f_ffree
= buf
->f_bfree
;
1794 /* __kernel_fsid_t f_fsid */
1795 buf
->f_namelen
= UDF_NAME_LEN
-2;
1800 static unsigned char udf_bitmap_lookup
[16] = {
1801 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
1805 udf_count_free_bitmap(struct super_block
*sb
, struct udf_bitmap
*bitmap
)
1807 struct buffer_head
*bh
= NULL
;
1808 unsigned int accum
= 0;
1810 int block
= 0, newblock
;
1816 struct spaceBitmapDesc
*bm
;
1820 loc
.logicalBlockNum
= bitmap
->s_extPosition
;
1821 loc
.partitionReferenceNum
= UDF_SB_PARTITION(sb
);
1822 bh
= udf_read_ptagged(sb
, loc
, 0, &ident
);
1826 printk(KERN_ERR
"udf: udf_count_free failed\n");
1829 else if (ident
!= TAG_IDENT_SBD
)
1831 udf_release_data(bh
);
1832 printk(KERN_ERR
"udf: udf_count_free failed\n");
1836 bm
= (struct spaceBitmapDesc
*)bh
->b_data
;
1837 bytes
= le32_to_cpu(bm
->numOfBytes
);
1838 index
= sizeof(struct spaceBitmapDesc
); /* offset in first block only */
1839 ptr
= (uint8_t *)bh
->b_data
;
1843 while ((bytes
> 0) && (index
< sb
->s_blocksize
))
1846 accum
+= udf_bitmap_lookup
[ value
& 0x0f ];
1847 accum
+= udf_bitmap_lookup
[ value
>> 4 ];
1853 udf_release_data(bh
);
1854 newblock
= udf_get_lb_pblock(sb
, loc
, ++block
);
1855 bh
= udf_tread(sb
, newblock
);
1858 udf_debug("read failed\n");
1862 ptr
= (uint8_t *)bh
->b_data
;
1865 udf_release_data(bh
);
1874 udf_count_free_table(struct super_block
*sb
, struct inode
* table
)
1876 unsigned int accum
= 0;
1877 uint32_t extoffset
, elen
;
1878 kernel_lb_addr bloc
, eloc
;
1880 struct buffer_head
*bh
= NULL
;
1884 bloc
= UDF_I_LOCATION(table
);
1885 extoffset
= sizeof(struct unallocSpaceEntry
);
1887 while ((etype
= udf_next_aext(table
, &bloc
, &extoffset
, &eloc
, &elen
, &bh
, 1)) != -1)
1889 accum
+= (elen
>> table
->i_sb
->s_blocksize_bits
);
1891 udf_release_data(bh
);
1899 udf_count_free(struct super_block
*sb
)
1901 unsigned int accum
= 0;
1903 if (UDF_SB_LVIDBH(sb
))
1905 if (le32_to_cpu(UDF_SB_LVID(sb
)->numOfPartitions
) > UDF_SB_PARTITION(sb
))
1907 accum
= le32_to_cpu(UDF_SB_LVID(sb
)->freeSpaceTable
[UDF_SB_PARTITION(sb
)]);
1909 if (accum
== 0xFFFFFFFF)
1917 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1919 accum
+= udf_count_free_bitmap(sb
,
1920 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_bitmap
);
1922 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1924 accum
+= udf_count_free_bitmap(sb
,
1925 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_bitmap
);
1930 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_TABLE
)
1932 accum
+= udf_count_free_table(sb
,
1933 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_table
);
1935 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_TABLE
)
1937 accum
+= udf_count_free_table(sb
,
1938 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_table
);