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
);
120 ei
->i_lenExtents
= 0;
121 ei
->i_next_alloc_block
= 0;
122 ei
->i_next_alloc_goal
= 0;
125 return &ei
->vfs_inode
;
128 static void udf_destroy_inode(struct inode
*inode
)
130 kmem_cache_free(udf_inode_cachep
, UDF_I(inode
));
133 static void init_once(void * foo
, kmem_cache_t
* cachep
, unsigned long flags
)
135 struct udf_inode_info
*ei
= (struct udf_inode_info
*) foo
;
137 if ((flags
& (SLAB_CTOR_VERIFY
|SLAB_CTOR_CONSTRUCTOR
)) ==
138 SLAB_CTOR_CONSTRUCTOR
)
140 ei
->i_ext
.i_data
= NULL
;
141 inode_init_once(&ei
->vfs_inode
);
145 static int init_inodecache(void)
147 udf_inode_cachep
= kmem_cache_create("udf_inode_cache",
148 sizeof(struct udf_inode_info
),
149 0, (SLAB_RECLAIM_ACCOUNT
|
152 if (udf_inode_cachep
== NULL
)
157 static void destroy_inodecache(void)
159 if (kmem_cache_destroy(udf_inode_cachep
))
160 printk(KERN_INFO
"udf_inode_cache: not all structures were freed\n");
163 /* Superblock operations */
164 static struct super_operations udf_sb_ops
= {
165 .alloc_inode
= udf_alloc_inode
,
166 .destroy_inode
= udf_destroy_inode
,
167 .write_inode
= udf_write_inode
,
168 .delete_inode
= udf_delete_inode
,
169 .clear_inode
= udf_clear_inode
,
170 .put_super
= udf_put_super
,
171 .write_super
= udf_write_super
,
172 .statfs
= udf_statfs
,
173 .remount_fs
= udf_remount_fs
,
179 unsigned int blocksize
;
180 unsigned int session
;
181 unsigned int lastblock
;
184 unsigned short partition
;
185 unsigned int fileset
;
186 unsigned int rootdir
;
191 struct nls_table
*nls_map
;
194 static int __init
init_udf_fs(void)
197 err
= init_inodecache();
200 err
= register_filesystem(&udf_fstype
);
205 destroy_inodecache();
210 static void __exit
exit_udf_fs(void)
212 unregister_filesystem(&udf_fstype
);
213 destroy_inodecache();
216 module_init(init_udf_fs
)
217 module_exit(exit_udf_fs
)
223 * Parse mount options.
226 * The following mount options are supported:
228 * gid= Set the default group.
229 * umask= Set the default umask.
230 * uid= Set the default user.
231 * bs= Set the block size.
232 * unhide Show otherwise hidden files.
233 * undelete Show deleted files in lists.
234 * adinicb Embed data in the inode (default)
235 * noadinicb Don't embed data in the inode
236 * shortad Use short ad's
237 * longad Use long ad's (default)
238 * nostrict Unset strict conformance
239 * iocharset= Set the NLS character set
241 * The remaining are for debugging and disaster recovery:
243 * novrs Skip volume sequence recognition
245 * The following expect a offset from 0.
247 * session= Set the CDROM session (default= last session)
248 * anchor= Override standard anchor location. (default= 256)
249 * volume= Override the VolumeDesc location. (unused)
250 * partition= Override the PartitionDesc location. (unused)
251 * lastblock= Set the last block of the filesystem/
253 * The following expect a offset from the partition root.
255 * fileset= Override the fileset block location. (unused)
256 * rootdir= Override the root directory location. (unused)
257 * WARNING: overriding the rootdir to a non-directory may
258 * yield highly unpredictable results.
261 * options Pointer to mount options string.
262 * uopts Pointer to mount options variable.
265 * <return> 1 Mount options parsed okay.
266 * <return> 0 Error parsing mount options.
269 * July 1, 1997 - Andrew E. Mileski
270 * Written, tested, and released.
274 Opt_novrs
, Opt_nostrict
, Opt_bs
, Opt_unhide
, Opt_undelete
,
275 Opt_noadinicb
, Opt_adinicb
, Opt_shortad
, Opt_longad
,
276 Opt_gid
, Opt_uid
, Opt_umask
, Opt_session
, Opt_lastblock
,
277 Opt_anchor
, Opt_volume
, Opt_partition
, Opt_fileset
,
278 Opt_rootdir
, Opt_utf8
, Opt_iocharset
,
279 Opt_err
, Opt_uforget
, Opt_uignore
, Opt_gforget
, Opt_gignore
282 static match_table_t tokens
= {
283 {Opt_novrs
, "novrs"},
284 {Opt_nostrict
, "nostrict"},
286 {Opt_unhide
, "unhide"},
287 {Opt_undelete
, "undelete"},
288 {Opt_noadinicb
, "noadinicb"},
289 {Opt_adinicb
, "adinicb"},
290 {Opt_shortad
, "shortad"},
291 {Opt_longad
, "longad"},
292 {Opt_uforget
, "uid=forget"},
293 {Opt_uignore
, "uid=ignore"},
294 {Opt_gforget
, "gid=forget"},
295 {Opt_gignore
, "gid=ignore"},
298 {Opt_umask
, "umask=%o"},
299 {Opt_session
, "session=%u"},
300 {Opt_lastblock
, "lastblock=%u"},
301 {Opt_anchor
, "anchor=%u"},
302 {Opt_volume
, "volume=%u"},
303 {Opt_partition
, "partition=%u"},
304 {Opt_fileset
, "fileset=%u"},
305 {Opt_rootdir
, "rootdir=%u"},
307 {Opt_iocharset
, "iocharset=%s"},
312 udf_parse_options(char *options
, struct udf_options
*uopt
)
318 uopt
->blocksize
= 2048;
319 uopt
->partition
= 0xFFFF;
320 uopt
->session
= 0xFFFFFFFF;
323 uopt
->volume
= 0xFFFFFFFF;
324 uopt
->rootdir
= 0xFFFFFFFF;
325 uopt
->fileset
= 0xFFFFFFFF;
326 uopt
->nls_map
= NULL
;
331 while ((p
= strsep(&options
, ",")) != NULL
)
333 substring_t args
[MAX_OPT_ARGS
];
338 token
= match_token(p
, tokens
, args
);
344 if (match_int(&args
[0], &option
))
346 uopt
->blocksize
= option
;
349 uopt
->flags
|= (1 << UDF_FLAG_UNHIDE
);
352 uopt
->flags
|= (1 << UDF_FLAG_UNDELETE
);
355 uopt
->flags
&= ~(1 << UDF_FLAG_USE_AD_IN_ICB
);
358 uopt
->flags
|= (1 << UDF_FLAG_USE_AD_IN_ICB
);
361 uopt
->flags
|= (1 << UDF_FLAG_USE_SHORT_AD
);
364 uopt
->flags
&= ~(1 << UDF_FLAG_USE_SHORT_AD
);
367 if (match_int(args
, &option
))
372 if (match_int(args
, &option
))
377 if (match_octal(args
, &option
))
379 uopt
->umask
= option
;
382 uopt
->flags
&= ~(1 << UDF_FLAG_STRICT
);
385 if (match_int(args
, &option
))
387 uopt
->session
= option
;
390 if (match_int(args
, &option
))
392 uopt
->lastblock
= option
;
395 if (match_int(args
, &option
))
397 uopt
->anchor
= option
;
400 if (match_int(args
, &option
))
402 uopt
->volume
= option
;
405 if (match_int(args
, &option
))
407 uopt
->partition
= option
;
410 if (match_int(args
, &option
))
412 uopt
->fileset
= option
;
415 if (match_int(args
, &option
))
417 uopt
->rootdir
= option
;
420 uopt
->flags
|= (1 << UDF_FLAG_UTF8
);
422 #ifdef CONFIG_UDF_NLS
424 uopt
->nls_map
= load_nls(args
[0].from
);
425 uopt
->flags
|= (1 << UDF_FLAG_NLS_MAP
);
429 uopt
->flags
|= (1 << UDF_FLAG_UID_IGNORE
);
432 uopt
->flags
|= (1 << UDF_FLAG_UID_FORGET
);
435 uopt
->flags
|= (1 << UDF_FLAG_GID_IGNORE
);
438 uopt
->flags
|= (1 << UDF_FLAG_GID_FORGET
);
441 printk(KERN_ERR
"udf: bad mount option \"%s\" "
442 "or missing value\n", p
);
450 udf_write_super(struct super_block
*sb
)
453 if (!(sb
->s_flags
& MS_RDONLY
))
460 udf_remount_fs(struct super_block
*sb
, int *flags
, char *options
)
462 struct udf_options uopt
;
464 uopt
.flags
= UDF_SB(sb
)->s_flags
;
465 uopt
.uid
= UDF_SB(sb
)->s_uid
;
466 uopt
.gid
= UDF_SB(sb
)->s_gid
;
467 uopt
.umask
= UDF_SB(sb
)->s_umask
;
469 if ( !udf_parse_options(options
, &uopt
) )
472 UDF_SB(sb
)->s_flags
= uopt
.flags
;
473 UDF_SB(sb
)->s_uid
= uopt
.uid
;
474 UDF_SB(sb
)->s_gid
= uopt
.gid
;
475 UDF_SB(sb
)->s_umask
= uopt
.umask
;
477 if (UDF_SB_LVIDBH(sb
)) {
478 int write_rev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
);
479 if (write_rev
> UDF_MAX_WRITE_VERSION
)
483 if ((*flags
& MS_RDONLY
) == (sb
->s_flags
& MS_RDONLY
))
485 if (*flags
& MS_RDONLY
)
497 * Set the block size to be used in all transfers.
500 * To allow room for a DMA transfer, it is best to guess big when unsure.
501 * This routine picks 2048 bytes as the blocksize when guessing. This
502 * should be adequate until devices with larger block sizes become common.
504 * Note that the Linux kernel can currently only deal with blocksizes of
505 * 512, 1024, 2048, 4096, and 8192 bytes.
508 * sb Pointer to _locked_ superblock.
511 * sb->s_blocksize Blocksize.
512 * sb->s_blocksize_bits log2 of blocksize.
513 * <return> 0 Blocksize is valid.
514 * <return> 1 Blocksize is invalid.
517 * July 1, 1997 - Andrew E. Mileski
518 * Written, tested, and released.
521 udf_set_blocksize(struct super_block
*sb
, int bsize
)
523 if (!sb_min_blocksize(sb
, bsize
)) {
524 udf_debug("Bad block size (%d)\n", bsize
);
525 printk(KERN_ERR
"udf: bad block size (%d)\n", bsize
);
528 return sb
->s_blocksize
;
532 udf_vrs(struct super_block
*sb
, int silent
)
534 struct volStructDesc
*vsd
= NULL
;
537 struct buffer_head
*bh
= NULL
;
542 /* Block size must be a multiple of 512 */
543 if (sb
->s_blocksize
& 511)
546 if (sb
->s_blocksize
< sizeof(struct volStructDesc
))
547 sectorsize
= sizeof(struct volStructDesc
);
549 sectorsize
= sb
->s_blocksize
;
551 sector
+= (UDF_SB_SESSION(sb
) << sb
->s_blocksize_bits
);
553 udf_debug("Starting at sector %u (%ld byte sectors)\n",
554 (sector
>> sb
->s_blocksize_bits
), sb
->s_blocksize
);
555 /* Process the sequence (if applicable) */
556 for (;!nsr02
&& !nsr03
; sector
+= sectorsize
)
559 bh
= udf_tread(sb
, sector
>> sb
->s_blocksize_bits
);
563 /* Look for ISO descriptors */
564 vsd
= (struct volStructDesc
*)(bh
->b_data
+
565 (sector
& (sb
->s_blocksize
- 1)));
567 if (vsd
->stdIdent
[0] == 0)
569 udf_release_data(bh
);
572 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_CD001
, VSD_STD_ID_LEN
))
575 switch (vsd
->structType
)
578 udf_debug("ISO9660 Boot Record found\n");
581 udf_debug("ISO9660 Primary Volume Descriptor found\n");
584 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
587 udf_debug("ISO9660 Volume Partition Descriptor found\n");
590 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
593 udf_debug("ISO9660 VRS (%u) found\n", vsd
->structType
);
597 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_BEA01
, VSD_STD_ID_LEN
))
600 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_TEA01
, VSD_STD_ID_LEN
))
602 udf_release_data(bh
);
605 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR02
, VSD_STD_ID_LEN
))
609 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR03
, VSD_STD_ID_LEN
))
613 udf_release_data(bh
);
620 else if (sector
- (UDF_SB_SESSION(sb
) << sb
->s_blocksize_bits
) == 32768)
630 * Find an anchor volume descriptor.
633 * sb Pointer to _locked_ superblock.
634 * lastblock Last block on media.
637 * <return> 1 if not found, 0 if ok
640 * July 1, 1997 - Andrew E. Mileski
641 * Written, tested, and released.
644 udf_find_anchor(struct super_block
*sb
)
646 int lastblock
= UDF_SB_LASTBLOCK(sb
);
647 struct buffer_head
*bh
= NULL
;
654 int varlastblock
= udf_variable_to_fixed(lastblock
);
655 int last
[] = { lastblock
, lastblock
- 2,
656 lastblock
- 150, lastblock
- 152,
657 varlastblock
, varlastblock
- 2,
658 varlastblock
- 150, varlastblock
- 152 };
662 /* Search for an anchor volume descriptor pointer */
664 /* according to spec, anchor is in either:
668 * however, if the disc isn't closed, it could be 512 */
670 for (i
= 0; !lastblock
&& i
< ARRAY_SIZE(last
); i
++) {
671 if (last
[i
] < 0 || !(bh
= sb_bread(sb
, last
[i
])))
673 ident
= location
= 0;
677 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
678 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
679 udf_release_data(bh
);
682 if (ident
== TAG_IDENT_AVDP
)
684 if (location
== last
[i
] - UDF_SB_SESSION(sb
))
686 lastblock
= UDF_SB_ANCHOR(sb
)[0] = last
[i
] - UDF_SB_SESSION(sb
);
687 UDF_SB_ANCHOR(sb
)[1] = last
[i
] - 256 - UDF_SB_SESSION(sb
);
689 else if (location
== udf_variable_to_fixed(last
[i
]) - UDF_SB_SESSION(sb
))
691 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
692 lastblock
= UDF_SB_ANCHOR(sb
)[0] = udf_variable_to_fixed(last
[i
]) - UDF_SB_SESSION(sb
);
693 UDF_SB_ANCHOR(sb
)[1] = lastblock
- 256 - UDF_SB_SESSION(sb
);
696 udf_debug("Anchor found at block %d, location mismatch %d.\n",
699 else if (ident
== TAG_IDENT_FE
|| ident
== TAG_IDENT_EFE
)
702 UDF_SB_ANCHOR(sb
)[3] = 512;
706 if (last
[i
] < 256 || !(bh
= sb_bread(sb
, last
[i
] - 256)))
708 ident
= location
= 0;
712 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
713 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
714 udf_release_data(bh
);
717 if (ident
== TAG_IDENT_AVDP
&&
718 location
== last
[i
] - 256 - UDF_SB_SESSION(sb
))
721 UDF_SB_ANCHOR(sb
)[1] = last
[i
] - 256;
725 if (last
[i
] < 312 + UDF_SB_SESSION(sb
) || !(bh
= sb_bread(sb
, last
[i
] - 312 - UDF_SB_SESSION(sb
))))
727 ident
= location
= 0;
731 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
732 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
733 udf_release_data(bh
);
736 if (ident
== TAG_IDENT_AVDP
&&
737 location
== udf_variable_to_fixed(last
[i
]) - 256)
739 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
740 lastblock
= udf_variable_to_fixed(last
[i
]);
741 UDF_SB_ANCHOR(sb
)[1] = lastblock
- 256;
750 /* We havn't found the lastblock. check 312 */
751 if ((bh
= sb_bread(sb
, 312 + UDF_SB_SESSION(sb
))))
753 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
754 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
755 udf_release_data(bh
);
757 if (ident
== TAG_IDENT_AVDP
&& location
== 256)
758 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
762 for (i
= 0; i
< ARRAY_SIZE(UDF_SB_ANCHOR(sb
)); i
++) {
763 if (UDF_SB_ANCHOR(sb
)[i
])
765 if (!(bh
= udf_read_tagged(sb
,
766 UDF_SB_ANCHOR(sb
)[i
], UDF_SB_ANCHOR(sb
)[i
], &ident
)))
768 UDF_SB_ANCHOR(sb
)[i
] = 0;
772 udf_release_data(bh
);
773 if ((ident
!= TAG_IDENT_AVDP
) && (i
||
774 (ident
!= TAG_IDENT_FE
&& ident
!= TAG_IDENT_EFE
)))
776 UDF_SB_ANCHOR(sb
)[i
] = 0;
782 UDF_SB_LASTBLOCK(sb
) = lastblock
;
786 udf_find_fileset(struct super_block
*sb
, kernel_lb_addr
*fileset
, kernel_lb_addr
*root
)
788 struct buffer_head
*bh
= NULL
;
792 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
793 fileset
->partitionReferenceNum
!= 0xFFFF)
795 bh
= udf_read_ptagged(sb
, *fileset
, 0, &ident
);
799 else if (ident
!= TAG_IDENT_FSD
)
801 udf_release_data(bh
);
807 if (!bh
) /* Search backwards through the partitions */
809 kernel_lb_addr newfileset
;
813 for (newfileset
.partitionReferenceNum
=UDF_SB_NUMPARTS(sb
)-1;
814 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
815 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
816 fileset
->partitionReferenceNum
== 0xFFFF);
817 newfileset
.partitionReferenceNum
--)
819 lastblock
= UDF_SB_PARTLEN(sb
, newfileset
.partitionReferenceNum
);
820 newfileset
.logicalBlockNum
= 0;
824 bh
= udf_read_ptagged(sb
, newfileset
, 0, &ident
);
827 newfileset
.logicalBlockNum
++;
835 struct spaceBitmapDesc
*sp
;
836 sp
= (struct spaceBitmapDesc
*)bh
->b_data
;
837 newfileset
.logicalBlockNum
+= 1 +
838 ((le32_to_cpu(sp
->numOfBytes
) + sizeof(struct spaceBitmapDesc
) - 1)
839 >> sb
->s_blocksize_bits
);
840 udf_release_data(bh
);
845 *fileset
= newfileset
;
850 newfileset
.logicalBlockNum
++;
851 udf_release_data(bh
);
857 while (newfileset
.logicalBlockNum
< lastblock
&&
858 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
859 fileset
->partitionReferenceNum
== 0xFFFF);
863 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
864 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
)
866 udf_debug("Fileset at block=%d, partition=%d\n",
867 fileset
->logicalBlockNum
, fileset
->partitionReferenceNum
);
869 UDF_SB_PARTITION(sb
) = fileset
->partitionReferenceNum
;
870 udf_load_fileset(sb
, bh
, root
);
871 udf_release_data(bh
);
878 udf_load_pvoldesc(struct super_block
*sb
, struct buffer_head
*bh
)
880 struct primaryVolDesc
*pvoldesc
;
886 pvoldesc
= (struct primaryVolDesc
*)bh
->b_data
;
888 if ( udf_stamp_to_time(&recording
, &recording_usec
,
889 lets_to_cpu(pvoldesc
->recordingDateAndTime
)) )
892 ts
= lets_to_cpu(pvoldesc
->recordingDateAndTime
);
893 udf_debug("recording time %ld/%ld, %04u/%02u/%02u %02u:%02u (%x)\n",
894 recording
, recording_usec
,
895 ts
.year
, ts
.month
, ts
.day
, ts
.hour
, ts
.minute
, ts
.typeAndTimezone
);
896 UDF_SB_RECORDTIME(sb
).tv_sec
= recording
;
897 UDF_SB_RECORDTIME(sb
).tv_nsec
= recording_usec
* 1000;
900 if ( !udf_build_ustr(&instr
, pvoldesc
->volIdent
, 32) )
902 if (udf_CS0toUTF8(&outstr
, &instr
))
904 strncpy( UDF_SB_VOLIDENT(sb
), outstr
.u_name
,
905 outstr
.u_len
> 31 ? 31 : outstr
.u_len
);
906 udf_debug("volIdent[] = '%s'\n", UDF_SB_VOLIDENT(sb
));
910 if ( !udf_build_ustr(&instr
, pvoldesc
->volSetIdent
, 128) )
912 if (udf_CS0toUTF8(&outstr
, &instr
))
913 udf_debug("volSetIdent[] = '%s'\n", outstr
.u_name
);
918 udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
, kernel_lb_addr
*root
)
920 struct fileSetDesc
*fset
;
922 fset
= (struct fileSetDesc
*)bh
->b_data
;
924 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
926 UDF_SB_SERIALNUM(sb
) = le16_to_cpu(fset
->descTag
.tagSerialNum
);
928 udf_debug("Rootdir at block=%d, partition=%d\n",
929 root
->logicalBlockNum
, root
->partitionReferenceNum
);
933 udf_load_partdesc(struct super_block
*sb
, struct buffer_head
*bh
)
935 struct partitionDesc
*p
;
938 p
= (struct partitionDesc
*)bh
->b_data
;
940 for (i
=0; i
<UDF_SB_NUMPARTS(sb
); i
++)
942 udf_debug("Searching map: (%d == %d)\n",
943 UDF_SB_PARTMAPS(sb
)[i
].s_partition_num
, le16_to_cpu(p
->partitionNumber
));
944 if (UDF_SB_PARTMAPS(sb
)[i
].s_partition_num
== le16_to_cpu(p
->partitionNumber
))
946 UDF_SB_PARTLEN(sb
,i
) = le32_to_cpu(p
->partitionLength
); /* blocks */
947 UDF_SB_PARTROOT(sb
,i
) = le32_to_cpu(p
->partitionStartingLocation
);
948 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_READ_ONLY
)
949 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_READ_ONLY
;
950 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_WRITE_ONCE
)
951 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_WRITE_ONCE
;
952 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_REWRITABLE
)
953 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_REWRITABLE
;
954 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_OVERWRITABLE
)
955 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_OVERWRITABLE
;
957 if (!strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR02
) ||
958 !strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR03
))
960 struct partitionHeaderDesc
*phd
;
962 phd
= (struct partitionHeaderDesc
*)(p
->partitionContentsUse
);
963 if (phd
->unallocSpaceTable
.extLength
)
965 kernel_lb_addr loc
= { le32_to_cpu(phd
->unallocSpaceTable
.extPosition
), i
};
967 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_table
=
969 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_UNALLOC_TABLE
;
970 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
971 i
, UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_table
->i_ino
);
973 if (phd
->unallocSpaceBitmap
.extLength
)
975 UDF_SB_ALLOC_BITMAP(sb
, i
, s_uspace
);
976 if (UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
!= NULL
)
978 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
->s_extLength
=
979 le32_to_cpu(phd
->unallocSpaceBitmap
.extLength
);
980 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
->s_extPosition
=
981 le32_to_cpu(phd
->unallocSpaceBitmap
.extPosition
);
982 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_UNALLOC_BITMAP
;
983 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
984 i
, UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
->s_extPosition
);
987 if (phd
->partitionIntegrityTable
.extLength
)
988 udf_debug("partitionIntegrityTable (part %d)\n", i
);
989 if (phd
->freedSpaceTable
.extLength
)
991 kernel_lb_addr loc
= { le32_to_cpu(phd
->freedSpaceTable
.extPosition
), i
};
993 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_table
=
995 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_FREED_TABLE
;
996 udf_debug("freedSpaceTable (part %d) @ %ld\n",
997 i
, UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_table
->i_ino
);
999 if (phd
->freedSpaceBitmap
.extLength
)
1001 UDF_SB_ALLOC_BITMAP(sb
, i
, s_fspace
);
1002 if (UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
!= NULL
)
1004 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
->s_extLength
=
1005 le32_to_cpu(phd
->freedSpaceBitmap
.extLength
);
1006 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
->s_extPosition
=
1007 le32_to_cpu(phd
->freedSpaceBitmap
.extPosition
);
1008 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_FREED_BITMAP
;
1009 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1010 i
, UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
->s_extPosition
);
1017 if (i
== UDF_SB_NUMPARTS(sb
))
1019 udf_debug("Partition (%d) not found in partition map\n", le16_to_cpu(p
->partitionNumber
));
1023 udf_debug("Partition (%d:%d type %x) starts at physical %d, block length %d\n",
1024 le16_to_cpu(p
->partitionNumber
), i
, UDF_SB_PARTTYPE(sb
,i
),
1025 UDF_SB_PARTROOT(sb
,i
), UDF_SB_PARTLEN(sb
,i
));
1030 udf_load_logicalvol(struct super_block
*sb
, struct buffer_head
* bh
, kernel_lb_addr
*fileset
)
1032 struct logicalVolDesc
*lvd
;
1036 lvd
= (struct logicalVolDesc
*)bh
->b_data
;
1038 UDF_SB_ALLOC_PARTMAPS(sb
, le32_to_cpu(lvd
->numPartitionMaps
));
1041 i
<UDF_SB_NUMPARTS(sb
) && offset
<le32_to_cpu(lvd
->mapTableLength
);
1042 i
++,offset
+=((struct genericPartitionMap
*)&(lvd
->partitionMaps
[offset
]))->partitionMapLength
)
1044 type
= ((struct genericPartitionMap
*)&(lvd
->partitionMaps
[offset
]))->partitionMapType
;
1047 struct genericPartitionMap1
*gpm1
= (struct genericPartitionMap1
*)&(lvd
->partitionMaps
[offset
]);
1048 UDF_SB_PARTTYPE(sb
,i
) = UDF_TYPE1_MAP15
;
1049 UDF_SB_PARTVSN(sb
,i
) = le16_to_cpu(gpm1
->volSeqNum
);
1050 UDF_SB_PARTNUM(sb
,i
) = le16_to_cpu(gpm1
->partitionNum
);
1051 UDF_SB_PARTFUNC(sb
,i
) = NULL
;
1055 struct udfPartitionMap2
*upm2
= (struct udfPartitionMap2
*)&(lvd
->partitionMaps
[offset
]);
1056 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
, strlen(UDF_ID_VIRTUAL
)))
1058 if (le16_to_cpu(((__le16
*)upm2
->partIdent
.identSuffix
)[0]) == 0x0150)
1060 UDF_SB_PARTTYPE(sb
,i
) = UDF_VIRTUAL_MAP15
;
1061 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_virt15
;
1063 else if (le16_to_cpu(((__le16
*)upm2
->partIdent
.identSuffix
)[0]) == 0x0200)
1065 UDF_SB_PARTTYPE(sb
,i
) = UDF_VIRTUAL_MAP20
;
1066 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_virt20
;
1069 else if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_SPARABLE
, strlen(UDF_ID_SPARABLE
)))
1073 struct sparingTable
*st
;
1074 struct sparablePartitionMap
*spm
= (struct sparablePartitionMap
*)&(lvd
->partitionMaps
[offset
]);
1076 UDF_SB_PARTTYPE(sb
,i
) = UDF_SPARABLE_MAP15
;
1077 UDF_SB_TYPESPAR(sb
,i
).s_packet_len
= le16_to_cpu(spm
->packetLength
);
1078 for (j
=0; j
<spm
->numSparingTables
; j
++)
1080 loc
= le32_to_cpu(spm
->locSparingTable
[j
]);
1081 UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
] =
1082 udf_read_tagged(sb
, loc
, loc
, &ident
);
1083 if (UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
] != NULL
)
1085 st
= (struct sparingTable
*)UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
]->b_data
;
1087 strncmp(st
->sparingIdent
.ident
, UDF_ID_SPARING
, strlen(UDF_ID_SPARING
)))
1089 udf_release_data(UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
]);
1090 UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
] = NULL
;
1094 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_spar15
;
1098 udf_debug("Unknown ident: %s\n", upm2
->partIdent
.ident
);
1101 UDF_SB_PARTVSN(sb
,i
) = le16_to_cpu(upm2
->volSeqNum
);
1102 UDF_SB_PARTNUM(sb
,i
) = le16_to_cpu(upm2
->partitionNum
);
1104 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1105 i
, UDF_SB_PARTNUM(sb
,i
), type
, UDF_SB_PARTVSN(sb
,i
));
1110 long_ad
*la
= (long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
1112 *fileset
= lelb_to_cpu(la
->extLocation
);
1113 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1114 fileset
->logicalBlockNum
,
1115 fileset
->partitionReferenceNum
);
1117 if (lvd
->integritySeqExt
.extLength
)
1118 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
1123 * udf_load_logicalvolint
1127 udf_load_logicalvolint(struct super_block
*sb
, kernel_extent_ad loc
)
1129 struct buffer_head
*bh
= NULL
;
1132 while (loc
.extLength
> 0 &&
1133 (bh
= udf_read_tagged(sb
, loc
.extLocation
,
1134 loc
.extLocation
, &ident
)) &&
1135 ident
== TAG_IDENT_LVID
)
1137 UDF_SB_LVIDBH(sb
) = bh
;
1139 if (UDF_SB_LVID(sb
)->nextIntegrityExt
.extLength
)
1140 udf_load_logicalvolint(sb
, leea_to_cpu(UDF_SB_LVID(sb
)->nextIntegrityExt
));
1142 if (UDF_SB_LVIDBH(sb
) != bh
)
1143 udf_release_data(bh
);
1144 loc
.extLength
-= sb
->s_blocksize
;
1147 if (UDF_SB_LVIDBH(sb
) != bh
)
1148 udf_release_data(bh
);
1152 * udf_process_sequence
1155 * Process a main/reserve volume descriptor sequence.
1158 * sb Pointer to _locked_ superblock.
1159 * block First block of first extent of the sequence.
1160 * lastblock Lastblock of first extent of the sequence.
1163 * July 1, 1997 - Andrew E. Mileski
1164 * Written, tested, and released.
1167 udf_process_sequence(struct super_block
*sb
, long block
, long lastblock
, kernel_lb_addr
*fileset
)
1169 struct buffer_head
*bh
= NULL
;
1170 struct udf_vds_record vds
[VDS_POS_LENGTH
];
1171 struct generic_desc
*gd
;
1172 struct volDescPtr
*vdp
;
1177 long next_s
= 0, next_e
= 0;
1179 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
1181 /* Read the main descriptor sequence */
1182 for (;(!done
&& block
<= lastblock
); block
++)
1185 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1189 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1190 gd
= (struct generic_desc
*)bh
->b_data
;
1191 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
1194 case TAG_IDENT_PVD
: /* ISO 13346 3/10.1 */
1195 if (vdsn
>= vds
[VDS_POS_PRIMARY_VOL_DESC
].volDescSeqNum
)
1197 vds
[VDS_POS_PRIMARY_VOL_DESC
].volDescSeqNum
= vdsn
;
1198 vds
[VDS_POS_PRIMARY_VOL_DESC
].block
= block
;
1201 case TAG_IDENT_VDP
: /* ISO 13346 3/10.3 */
1202 if (vdsn
>= vds
[VDS_POS_VOL_DESC_PTR
].volDescSeqNum
)
1204 vds
[VDS_POS_VOL_DESC_PTR
].volDescSeqNum
= vdsn
;
1205 vds
[VDS_POS_VOL_DESC_PTR
].block
= block
;
1207 vdp
= (struct volDescPtr
*)bh
->b_data
;
1208 next_s
= le32_to_cpu(vdp
->nextVolDescSeqExt
.extLocation
);
1209 next_e
= le32_to_cpu(vdp
->nextVolDescSeqExt
.extLength
);
1210 next_e
= next_e
>> sb
->s_blocksize_bits
;
1214 case TAG_IDENT_IUVD
: /* ISO 13346 3/10.4 */
1215 if (vdsn
>= vds
[VDS_POS_IMP_USE_VOL_DESC
].volDescSeqNum
)
1217 vds
[VDS_POS_IMP_USE_VOL_DESC
].volDescSeqNum
= vdsn
;
1218 vds
[VDS_POS_IMP_USE_VOL_DESC
].block
= block
;
1221 case TAG_IDENT_PD
: /* ISO 13346 3/10.5 */
1222 if (!vds
[VDS_POS_PARTITION_DESC
].block
)
1223 vds
[VDS_POS_PARTITION_DESC
].block
= block
;
1225 case TAG_IDENT_LVD
: /* ISO 13346 3/10.6 */
1226 if (vdsn
>= vds
[VDS_POS_LOGICAL_VOL_DESC
].volDescSeqNum
)
1228 vds
[VDS_POS_LOGICAL_VOL_DESC
].volDescSeqNum
= vdsn
;
1229 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
= block
;
1232 case TAG_IDENT_USD
: /* ISO 13346 3/10.8 */
1233 if (vdsn
>= vds
[VDS_POS_UNALLOC_SPACE_DESC
].volDescSeqNum
)
1235 vds
[VDS_POS_UNALLOC_SPACE_DESC
].volDescSeqNum
= vdsn
;
1236 vds
[VDS_POS_UNALLOC_SPACE_DESC
].block
= block
;
1239 case TAG_IDENT_TD
: /* ISO 13346 3/10.9 */
1240 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1245 next_s
= next_e
= 0;
1251 udf_release_data(bh
);
1253 for (i
=0; i
<VDS_POS_LENGTH
; i
++)
1257 bh
= udf_read_tagged(sb
, vds
[i
].block
, vds
[i
].block
, &ident
);
1259 if (i
== VDS_POS_PRIMARY_VOL_DESC
)
1260 udf_load_pvoldesc(sb
, bh
);
1261 else if (i
== VDS_POS_LOGICAL_VOL_DESC
)
1262 udf_load_logicalvol(sb
, bh
, fileset
);
1263 else if (i
== VDS_POS_PARTITION_DESC
)
1265 struct buffer_head
*bh2
= NULL
;
1266 udf_load_partdesc(sb
, bh
);
1267 for (j
=vds
[i
].block
+1; j
<vds
[VDS_POS_TERMINATING_DESC
].block
; j
++)
1269 bh2
= udf_read_tagged(sb
, j
, j
, &ident
);
1270 gd
= (struct generic_desc
*)bh2
->b_data
;
1271 if (ident
== TAG_IDENT_PD
)
1272 udf_load_partdesc(sb
, bh2
);
1273 udf_release_data(bh2
);
1276 udf_release_data(bh
);
1287 udf_check_valid(struct super_block
*sb
, int novrs
, int silent
)
1293 udf_debug("Validity check skipped because of novrs option\n");
1296 /* Check that it is NSR02 compliant */
1297 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
1298 else if ((block
= udf_vrs(sb
, silent
)) == -1)
1300 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1301 if (!UDF_SB_LASTBLOCK(sb
))
1302 UDF_SB_LASTBLOCK(sb
) = udf_get_last_block(sb
);
1310 udf_load_partition(struct super_block
*sb
, kernel_lb_addr
*fileset
)
1312 struct anchorVolDescPtr
*anchor
;
1314 struct buffer_head
*bh
;
1315 long main_s
, main_e
, reserve_s
, reserve_e
;
1321 for (i
= 0; i
< ARRAY_SIZE(UDF_SB_ANCHOR(sb
)); i
++) {
1322 if (UDF_SB_ANCHOR(sb
)[i
] && (bh
= udf_read_tagged(sb
,
1323 UDF_SB_ANCHOR(sb
)[i
], UDF_SB_ANCHOR(sb
)[i
], &ident
)))
1325 anchor
= (struct anchorVolDescPtr
*)bh
->b_data
;
1327 /* Locate the main sequence */
1328 main_s
= le32_to_cpu( anchor
->mainVolDescSeqExt
.extLocation
);
1329 main_e
= le32_to_cpu( anchor
->mainVolDescSeqExt
.extLength
);
1330 main_e
= main_e
>> sb
->s_blocksize_bits
;
1333 /* Locate the reserve sequence */
1334 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1335 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1336 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1337 reserve_e
+= reserve_s
;
1339 udf_release_data(bh
);
1341 /* Process the main & reserve sequences */
1342 /* responsible for finding the PartitionDesc(s) */
1343 if (!(udf_process_sequence(sb
, main_s
, main_e
, fileset
) &&
1344 udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
)))
1351 if (i
== ARRAY_SIZE(UDF_SB_ANCHOR(sb
))) {
1352 udf_debug("No Anchor block found\n");
1355 udf_debug("Using anchor in block %d\n", UDF_SB_ANCHOR(sb
)[i
]);
1357 for (i
=0; i
<UDF_SB_NUMPARTS(sb
); i
++)
1359 switch UDF_SB_PARTTYPE(sb
, i
)
1361 case UDF_VIRTUAL_MAP15
:
1362 case UDF_VIRTUAL_MAP20
:
1366 if (!UDF_SB_LASTBLOCK(sb
))
1368 UDF_SB_LASTBLOCK(sb
) = udf_get_last_block(sb
);
1369 udf_find_anchor(sb
);
1372 if (!UDF_SB_LASTBLOCK(sb
))
1374 udf_debug("Unable to determine Lastblock (For Virtual Partition)\n");
1378 for (j
=0; j
<UDF_SB_NUMPARTS(sb
); j
++)
1381 UDF_SB_PARTVSN(sb
,i
) == UDF_SB_PARTVSN(sb
,j
) &&
1382 UDF_SB_PARTNUM(sb
,i
) == UDF_SB_PARTNUM(sb
,j
))
1384 ino
.partitionReferenceNum
= j
;
1385 ino
.logicalBlockNum
= UDF_SB_LASTBLOCK(sb
) -
1386 UDF_SB_PARTROOT(sb
,j
);
1391 if (j
== UDF_SB_NUMPARTS(sb
))
1394 if (!(UDF_SB_VAT(sb
) = udf_iget(sb
, ino
)))
1397 if (UDF_SB_PARTTYPE(sb
,i
) == UDF_VIRTUAL_MAP15
)
1399 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
= udf_ext0_offset(UDF_SB_VAT(sb
));
1400 UDF_SB_TYPEVIRT(sb
,i
).s_num_entries
= (UDF_SB_VAT(sb
)->i_size
- 36) >> 2;
1402 else if (UDF_SB_PARTTYPE(sb
,i
) == UDF_VIRTUAL_MAP20
)
1404 struct buffer_head
*bh
= NULL
;
1407 pos
= udf_block_map(UDF_SB_VAT(sb
), 0);
1408 bh
= sb_bread(sb
, pos
);
1409 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
=
1410 le16_to_cpu(((struct virtualAllocationTable20
*)bh
->b_data
+ udf_ext0_offset(UDF_SB_VAT(sb
)))->lengthHeader
) +
1411 udf_ext0_offset(UDF_SB_VAT(sb
));
1412 UDF_SB_TYPEVIRT(sb
,i
).s_num_entries
= (UDF_SB_VAT(sb
)->i_size
-
1413 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
) >> 2;
1414 udf_release_data(bh
);
1416 UDF_SB_PARTROOT(sb
,i
) = udf_get_pblock(sb
, 0, i
, 0);
1417 UDF_SB_PARTLEN(sb
,i
) = UDF_SB_PARTLEN(sb
,ino
.partitionReferenceNum
);
1424 static void udf_open_lvid(struct super_block
*sb
)
1426 if (UDF_SB_LVIDBH(sb
))
1429 kernel_timestamp cpu_time
;
1431 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1432 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1433 if (udf_time_to_stamp(&cpu_time
, CURRENT_TIME
))
1434 UDF_SB_LVID(sb
)->recordingDateAndTime
= cpu_to_lets(cpu_time
);
1435 UDF_SB_LVID(sb
)->integrityType
= LVID_INTEGRITY_TYPE_OPEN
;
1437 UDF_SB_LVID(sb
)->descTag
.descCRC
=
1438 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb
) + sizeof(tag
),
1439 le16_to_cpu(UDF_SB_LVID(sb
)->descTag
.descCRCLength
), 0));
1441 UDF_SB_LVID(sb
)->descTag
.tagChecksum
= 0;
1442 for (i
=0; i
<16; i
++)
1444 UDF_SB_LVID(sb
)->descTag
.tagChecksum
+=
1445 ((uint8_t *)&(UDF_SB_LVID(sb
)->descTag
))[i
];
1447 mark_buffer_dirty(UDF_SB_LVIDBH(sb
));
1451 static void udf_close_lvid(struct super_block
*sb
)
1453 if (UDF_SB_LVIDBH(sb
) &&
1454 UDF_SB_LVID(sb
)->integrityType
== LVID_INTEGRITY_TYPE_OPEN
)
1457 kernel_timestamp cpu_time
;
1459 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1460 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1461 if (udf_time_to_stamp(&cpu_time
, CURRENT_TIME
))
1462 UDF_SB_LVID(sb
)->recordingDateAndTime
= cpu_to_lets(cpu_time
);
1463 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(UDF_SB_LVIDIU(sb
)->maxUDFWriteRev
))
1464 UDF_SB_LVIDIU(sb
)->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
1465 if (UDF_SB_UDFREV(sb
) > le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
))
1466 UDF_SB_LVIDIU(sb
)->minUDFReadRev
= cpu_to_le16(UDF_SB_UDFREV(sb
));
1467 if (UDF_SB_UDFREV(sb
) > le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
))
1468 UDF_SB_LVIDIU(sb
)->minUDFWriteRev
= cpu_to_le16(UDF_SB_UDFREV(sb
));
1469 UDF_SB_LVID(sb
)->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE
);
1471 UDF_SB_LVID(sb
)->descTag
.descCRC
=
1472 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb
) + sizeof(tag
),
1473 le16_to_cpu(UDF_SB_LVID(sb
)->descTag
.descCRCLength
), 0));
1475 UDF_SB_LVID(sb
)->descTag
.tagChecksum
= 0;
1476 for (i
=0; i
<16; i
++)
1478 UDF_SB_LVID(sb
)->descTag
.tagChecksum
+=
1479 ((uint8_t *)&(UDF_SB_LVID(sb
)->descTag
))[i
];
1481 mark_buffer_dirty(UDF_SB_LVIDBH(sb
));
1489 * Complete the specified super block.
1492 * sb Pointer to superblock to complete - never NULL.
1493 * sb->s_dev Device to read suberblock from.
1494 * options Pointer to mount options.
1495 * silent Silent flag.
1498 * July 1, 1997 - Andrew E. Mileski
1499 * Written, tested, and released.
1501 static int udf_fill_super(struct super_block
*sb
, void *options
, int silent
)
1504 struct inode
*inode
=NULL
;
1505 struct udf_options uopt
;
1506 kernel_lb_addr rootdir
, fileset
;
1507 struct udf_sb_info
*sbi
;
1509 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
) | (1 << UDF_FLAG_STRICT
);
1514 sbi
= kmalloc(sizeof(struct udf_sb_info
), GFP_KERNEL
);
1517 sb
->s_fs_info
= sbi
;
1518 memset(UDF_SB(sb
), 0x00, sizeof(struct udf_sb_info
));
1520 mutex_init(&sbi
->s_alloc_mutex
);
1522 if (!udf_parse_options((char *)options
, &uopt
))
1525 if (uopt
.flags
& (1 << UDF_FLAG_UTF8
) &&
1526 uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
))
1528 udf_error(sb
, "udf_read_super",
1529 "utf8 cannot be combined with iocharset\n");
1532 #ifdef CONFIG_UDF_NLS
1533 if ((uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) && !uopt
.nls_map
)
1535 uopt
.nls_map
= load_nls_default();
1537 uopt
.flags
&= ~(1 << UDF_FLAG_NLS_MAP
);
1539 udf_debug("Using default NLS map\n");
1542 if (!(uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)))
1543 uopt
.flags
|= (1 << UDF_FLAG_UTF8
);
1545 fileset
.logicalBlockNum
= 0xFFFFFFFF;
1546 fileset
.partitionReferenceNum
= 0xFFFF;
1548 UDF_SB(sb
)->s_flags
= uopt
.flags
;
1549 UDF_SB(sb
)->s_uid
= uopt
.uid
;
1550 UDF_SB(sb
)->s_gid
= uopt
.gid
;
1551 UDF_SB(sb
)->s_umask
= uopt
.umask
;
1552 UDF_SB(sb
)->s_nls_map
= uopt
.nls_map
;
1554 /* Set the block size for all transfers */
1555 if (!udf_set_blocksize(sb
, uopt
.blocksize
))
1558 if ( uopt
.session
== 0xFFFFFFFF )
1559 UDF_SB_SESSION(sb
) = udf_get_last_session(sb
);
1561 UDF_SB_SESSION(sb
) = uopt
.session
;
1563 udf_debug("Multi-session=%d\n", UDF_SB_SESSION(sb
));
1565 UDF_SB_LASTBLOCK(sb
) = uopt
.lastblock
;
1566 UDF_SB_ANCHOR(sb
)[0] = UDF_SB_ANCHOR(sb
)[1] = 0;
1567 UDF_SB_ANCHOR(sb
)[2] = uopt
.anchor
;
1568 UDF_SB_ANCHOR(sb
)[3] = 256;
1570 if (udf_check_valid(sb
, uopt
.novrs
, silent
)) /* read volume recognition sequences */
1572 printk("UDF-fs: No VRS found\n");
1576 udf_find_anchor(sb
);
1578 /* Fill in the rest of the superblock */
1579 sb
->s_op
= &udf_sb_ops
;
1582 sb
->s_magic
= UDF_SUPER_MAGIC
;
1583 sb
->s_time_gran
= 1000;
1585 if (udf_load_partition(sb
, &fileset
))
1587 printk("UDF-fs: No partition found (1)\n");
1591 udf_debug("Lastblock=%d\n", UDF_SB_LASTBLOCK(sb
));
1593 if ( UDF_SB_LVIDBH(sb
) )
1595 uint16_t minUDFReadRev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
);
1596 uint16_t minUDFWriteRev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
);
1597 /* uint16_t maxUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev); */
1599 if (minUDFReadRev
> UDF_MAX_READ_VERSION
)
1601 printk("UDF-fs: minUDFReadRev=%x (max is %x)\n",
1602 le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
),
1603 UDF_MAX_READ_VERSION
);
1606 else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
)
1608 sb
->s_flags
|= MS_RDONLY
;
1611 UDF_SB_UDFREV(sb
) = minUDFWriteRev
;
1613 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
1614 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
1615 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
1616 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
1619 if ( !UDF_SB_NUMPARTS(sb
) )
1621 printk("UDF-fs: No partition found (2)\n");
1625 if ( udf_find_fileset(sb
, &fileset
, &rootdir
) )
1627 printk("UDF-fs: No fileset found\n");
1633 kernel_timestamp ts
;
1634 udf_time_to_stamp(&ts
, UDF_SB_RECORDTIME(sb
));
1635 udf_info("UDF %s (%s) Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
1636 UDFFS_VERSION
, UDFFS_DATE
,
1637 UDF_SB_VOLIDENT(sb
), ts
.year
, ts
.month
, ts
.day
, ts
.hour
, ts
.minute
,
1638 ts
.typeAndTimezone
);
1640 if (!(sb
->s_flags
& MS_RDONLY
))
1643 /* Assign the root inode */
1644 /* assign inodes by physical block number */
1645 /* perhaps it's not extensible enough, but for now ... */
1646 inode
= udf_iget(sb
, rootdir
);
1649 printk("UDF-fs: Error in udf_iget, block=%d, partition=%d\n",
1650 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
1654 /* Allocate a dentry for the root inode */
1655 sb
->s_root
= d_alloc_root(inode
);
1658 printk("UDF-fs: Couldn't allocate root dentry\n");
1662 sb
->s_maxbytes
= MAX_LFS_FILESIZE
;
1667 iput(UDF_SB_VAT(sb
));
1668 if (UDF_SB_NUMPARTS(sb
))
1670 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_TABLE
)
1671 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_table
);
1672 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_TABLE
)
1673 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_table
);
1674 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1675 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_uspace
);
1676 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1677 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_fspace
);
1678 if (UDF_SB_PARTTYPE(sb
, UDF_SB_PARTITION(sb
)) == UDF_SPARABLE_MAP15
)
1681 udf_release_data(UDF_SB_TYPESPAR(sb
, UDF_SB_PARTITION(sb
)).s_spar_map
[i
]);
1684 #ifdef CONFIG_UDF_NLS
1685 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
1686 unload_nls(UDF_SB(sb
)->s_nls_map
);
1688 if (!(sb
->s_flags
& MS_RDONLY
))
1690 udf_release_data(UDF_SB_LVIDBH(sb
));
1693 sb
->s_fs_info
= NULL
;
1697 void udf_error(struct super_block
*sb
, const char *function
,
1698 const char *fmt
, ...)
1702 if (!(sb
->s_flags
& MS_RDONLY
))
1707 va_start(args
, fmt
);
1708 vsprintf(error_buf
, fmt
, args
);
1710 printk (KERN_CRIT
"UDF-fs error (device %s): %s: %s\n",
1711 sb
->s_id
, function
, error_buf
);
1714 void udf_warning(struct super_block
*sb
, const char *function
,
1715 const char *fmt
, ...)
1719 va_start (args
, fmt
);
1720 vsprintf(error_buf
, fmt
, args
);
1722 printk(KERN_WARNING
"UDF-fs warning (device %s): %s: %s\n",
1723 sb
->s_id
, function
, error_buf
);
1730 * Prepare for destruction of the superblock.
1733 * Called before the filesystem is unmounted.
1736 * July 1, 1997 - Andrew E. Mileski
1737 * Written, tested, and released.
1740 udf_put_super(struct super_block
*sb
)
1745 iput(UDF_SB_VAT(sb
));
1746 if (UDF_SB_NUMPARTS(sb
))
1748 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_TABLE
)
1749 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_table
);
1750 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_TABLE
)
1751 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_table
);
1752 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1753 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_uspace
);
1754 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1755 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_fspace
);
1756 if (UDF_SB_PARTTYPE(sb
, UDF_SB_PARTITION(sb
)) == UDF_SPARABLE_MAP15
)
1759 udf_release_data(UDF_SB_TYPESPAR(sb
, UDF_SB_PARTITION(sb
)).s_spar_map
[i
]);
1762 #ifdef CONFIG_UDF_NLS
1763 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
1764 unload_nls(UDF_SB(sb
)->s_nls_map
);
1766 if (!(sb
->s_flags
& MS_RDONLY
))
1768 udf_release_data(UDF_SB_LVIDBH(sb
));
1770 kfree(sb
->s_fs_info
);
1771 sb
->s_fs_info
= NULL
;
1778 * Return info about the filesystem.
1781 * Called by sys_statfs()
1784 * July 1, 1997 - Andrew E. Mileski
1785 * Written, tested, and released.
1788 udf_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
1790 struct super_block
*sb
= dentry
->d_sb
;
1792 buf
->f_type
= UDF_SUPER_MAGIC
;
1793 buf
->f_bsize
= sb
->s_blocksize
;
1794 buf
->f_blocks
= UDF_SB_PARTLEN(sb
, UDF_SB_PARTITION(sb
));
1795 buf
->f_bfree
= udf_count_free(sb
);
1796 buf
->f_bavail
= buf
->f_bfree
;
1797 buf
->f_files
= (UDF_SB_LVIDBH(sb
) ?
1798 (le32_to_cpu(UDF_SB_LVIDIU(sb
)->numFiles
) +
1799 le32_to_cpu(UDF_SB_LVIDIU(sb
)->numDirs
)) : 0) + buf
->f_bfree
;
1800 buf
->f_ffree
= buf
->f_bfree
;
1801 /* __kernel_fsid_t f_fsid */
1802 buf
->f_namelen
= UDF_NAME_LEN
-2;
1807 static unsigned char udf_bitmap_lookup
[16] = {
1808 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
1812 udf_count_free_bitmap(struct super_block
*sb
, struct udf_bitmap
*bitmap
)
1814 struct buffer_head
*bh
= NULL
;
1815 unsigned int accum
= 0;
1817 int block
= 0, newblock
;
1823 struct spaceBitmapDesc
*bm
;
1827 loc
.logicalBlockNum
= bitmap
->s_extPosition
;
1828 loc
.partitionReferenceNum
= UDF_SB_PARTITION(sb
);
1829 bh
= udf_read_ptagged(sb
, loc
, 0, &ident
);
1833 printk(KERN_ERR
"udf: udf_count_free failed\n");
1836 else if (ident
!= TAG_IDENT_SBD
)
1838 udf_release_data(bh
);
1839 printk(KERN_ERR
"udf: udf_count_free failed\n");
1843 bm
= (struct spaceBitmapDesc
*)bh
->b_data
;
1844 bytes
= le32_to_cpu(bm
->numOfBytes
);
1845 index
= sizeof(struct spaceBitmapDesc
); /* offset in first block only */
1846 ptr
= (uint8_t *)bh
->b_data
;
1850 while ((bytes
> 0) && (index
< sb
->s_blocksize
))
1853 accum
+= udf_bitmap_lookup
[ value
& 0x0f ];
1854 accum
+= udf_bitmap_lookup
[ value
>> 4 ];
1860 udf_release_data(bh
);
1861 newblock
= udf_get_lb_pblock(sb
, loc
, ++block
);
1862 bh
= udf_tread(sb
, newblock
);
1865 udf_debug("read failed\n");
1869 ptr
= (uint8_t *)bh
->b_data
;
1872 udf_release_data(bh
);
1881 udf_count_free_table(struct super_block
*sb
, struct inode
* table
)
1883 unsigned int accum
= 0;
1884 uint32_t extoffset
, elen
;
1885 kernel_lb_addr bloc
, eloc
;
1887 struct buffer_head
*bh
= NULL
;
1891 bloc
= UDF_I_LOCATION(table
);
1892 extoffset
= sizeof(struct unallocSpaceEntry
);
1894 while ((etype
= udf_next_aext(table
, &bloc
, &extoffset
, &eloc
, &elen
, &bh
, 1)) != -1)
1896 accum
+= (elen
>> table
->i_sb
->s_blocksize_bits
);
1898 udf_release_data(bh
);
1906 udf_count_free(struct super_block
*sb
)
1908 unsigned int accum
= 0;
1910 if (UDF_SB_LVIDBH(sb
))
1912 if (le32_to_cpu(UDF_SB_LVID(sb
)->numOfPartitions
) > UDF_SB_PARTITION(sb
))
1914 accum
= le32_to_cpu(UDF_SB_LVID(sb
)->freeSpaceTable
[UDF_SB_PARTITION(sb
)]);
1916 if (accum
== 0xFFFFFFFF)
1924 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1926 accum
+= udf_count_free_bitmap(sb
,
1927 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_bitmap
);
1929 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1931 accum
+= udf_count_free_bitmap(sb
,
1932 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_bitmap
);
1937 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_TABLE
)
1939 accum
+= udf_count_free_table(sb
,
1940 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_table
);
1942 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_TABLE
)
1944 accum
+= udf_count_free_table(sb
,
1945 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_table
);