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/config.h>
44 #include <linux/blkdev.h>
45 #include <linux/slab.h>
46 #include <linux/kernel.h>
47 #include <linux/module.h>
48 #include <linux/parser.h>
49 #include <linux/stat.h>
50 #include <linux/cdrom.h>
51 #include <linux/nls.h>
52 #include <linux/smp_lock.h>
53 #include <linux/buffer_head.h>
54 #include <linux/vfs.h>
55 #include <linux/vmalloc.h>
56 #include <asm/byteorder.h>
58 #include <linux/udf_fs.h>
62 #include <linux/init.h>
63 #include <asm/uaccess.h>
65 #define VDS_POS_PRIMARY_VOL_DESC 0
66 #define VDS_POS_UNALLOC_SPACE_DESC 1
67 #define VDS_POS_LOGICAL_VOL_DESC 2
68 #define VDS_POS_PARTITION_DESC 3
69 #define VDS_POS_IMP_USE_VOL_DESC 4
70 #define VDS_POS_VOL_DESC_PTR 5
71 #define VDS_POS_TERMINATING_DESC 6
72 #define VDS_POS_LENGTH 7
74 static char error_buf
[1024];
76 /* These are the "meat" - everything else is stuffing */
77 static int udf_fill_super(struct super_block
*, void *, int);
78 static void udf_put_super(struct super_block
*);
79 static void udf_write_super(struct super_block
*);
80 static int udf_remount_fs(struct super_block
*, int *, char *);
81 static int udf_check_valid(struct super_block
*, int, int);
82 static int udf_vrs(struct super_block
*sb
, int silent
);
83 static int udf_load_partition(struct super_block
*, kernel_lb_addr
*);
84 static int udf_load_logicalvol(struct super_block
*, struct buffer_head
*, kernel_lb_addr
*);
85 static void udf_load_logicalvolint(struct super_block
*, kernel_extent_ad
);
86 static void udf_find_anchor(struct super_block
*);
87 static int udf_find_fileset(struct super_block
*, kernel_lb_addr
*, kernel_lb_addr
*);
88 static void udf_load_pvoldesc(struct super_block
*, struct buffer_head
*);
89 static void udf_load_fileset(struct super_block
*, struct buffer_head
*, kernel_lb_addr
*);
90 static void udf_load_partdesc(struct super_block
*, struct buffer_head
*);
91 static void udf_open_lvid(struct super_block
*);
92 static void udf_close_lvid(struct super_block
*);
93 static unsigned int udf_count_free(struct super_block
*);
94 static int udf_statfs(struct super_block
*, struct kstatfs
*);
96 /* UDF filesystem type */
97 static struct super_block
*udf_get_sb(struct file_system_type
*fs_type
,
98 int flags
, const char *dev_name
, void *data
)
100 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, udf_fill_super
);
103 static struct file_system_type udf_fstype
= {
104 .owner
= THIS_MODULE
,
106 .get_sb
= udf_get_sb
,
107 .kill_sb
= kill_block_super
,
108 .fs_flags
= FS_REQUIRES_DEV
,
111 static kmem_cache_t
* udf_inode_cachep
;
113 static struct inode
*udf_alloc_inode(struct super_block
*sb
)
115 struct udf_inode_info
*ei
;
116 ei
= (struct udf_inode_info
*)kmem_cache_alloc(udf_inode_cachep
, SLAB_KERNEL
);
119 return &ei
->vfs_inode
;
122 static void udf_destroy_inode(struct inode
*inode
)
124 kmem_cache_free(udf_inode_cachep
, UDF_I(inode
));
127 static void init_once(void * foo
, kmem_cache_t
* cachep
, unsigned long flags
)
129 struct udf_inode_info
*ei
= (struct udf_inode_info
*) foo
;
131 if ((flags
& (SLAB_CTOR_VERIFY
|SLAB_CTOR_CONSTRUCTOR
)) ==
132 SLAB_CTOR_CONSTRUCTOR
)
134 ei
->i_ext
.i_data
= NULL
;
135 inode_init_once(&ei
->vfs_inode
);
139 static int init_inodecache(void)
141 udf_inode_cachep
= kmem_cache_create("udf_inode_cache",
142 sizeof(struct udf_inode_info
),
143 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
<sizeof(last
)/sizeof(int)); i
++)
665 if (last
[i
] < 0 || !(bh
= sb_bread(sb
, last
[i
])))
667 ident
= location
= 0;
671 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
672 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
673 udf_release_data(bh
);
676 if (ident
== TAG_IDENT_AVDP
)
678 if (location
== last
[i
] - UDF_SB_SESSION(sb
))
680 lastblock
= UDF_SB_ANCHOR(sb
)[0] = last
[i
] - UDF_SB_SESSION(sb
);
681 UDF_SB_ANCHOR(sb
)[1] = last
[i
] - 256 - UDF_SB_SESSION(sb
);
683 else if (location
== udf_variable_to_fixed(last
[i
]) - UDF_SB_SESSION(sb
))
685 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
686 lastblock
= UDF_SB_ANCHOR(sb
)[0] = udf_variable_to_fixed(last
[i
]) - UDF_SB_SESSION(sb
);
687 UDF_SB_ANCHOR(sb
)[1] = lastblock
- 256 - UDF_SB_SESSION(sb
);
690 udf_debug("Anchor found at block %d, location mismatch %d.\n",
693 else if (ident
== TAG_IDENT_FE
|| ident
== TAG_IDENT_EFE
)
696 UDF_SB_ANCHOR(sb
)[3] = 512;
700 if (last
[i
] < 256 || !(bh
= sb_bread(sb
, last
[i
] - 256)))
702 ident
= location
= 0;
706 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
707 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
708 udf_release_data(bh
);
711 if (ident
== TAG_IDENT_AVDP
&&
712 location
== last
[i
] - 256 - UDF_SB_SESSION(sb
))
715 UDF_SB_ANCHOR(sb
)[1] = last
[i
] - 256;
719 if (last
[i
] < 312 + UDF_SB_SESSION(sb
) || !(bh
= sb_bread(sb
, last
[i
] - 312 - UDF_SB_SESSION(sb
))))
721 ident
= location
= 0;
725 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
726 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
727 udf_release_data(bh
);
730 if (ident
== TAG_IDENT_AVDP
&&
731 location
== udf_variable_to_fixed(last
[i
]) - 256)
733 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
734 lastblock
= udf_variable_to_fixed(last
[i
]);
735 UDF_SB_ANCHOR(sb
)[1] = lastblock
- 256;
744 /* We havn't found the lastblock. check 312 */
745 if ((bh
= sb_bread(sb
, 312 + UDF_SB_SESSION(sb
))))
747 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
748 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
749 udf_release_data(bh
);
751 if (ident
== TAG_IDENT_AVDP
&& location
== 256)
752 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
756 for (i
=0; i
<sizeof(UDF_SB_ANCHOR(sb
))/sizeof(int); i
++)
758 if (UDF_SB_ANCHOR(sb
)[i
])
760 if (!(bh
= udf_read_tagged(sb
,
761 UDF_SB_ANCHOR(sb
)[i
], UDF_SB_ANCHOR(sb
)[i
], &ident
)))
763 UDF_SB_ANCHOR(sb
)[i
] = 0;
767 udf_release_data(bh
);
768 if ((ident
!= TAG_IDENT_AVDP
) && (i
||
769 (ident
!= TAG_IDENT_FE
&& ident
!= TAG_IDENT_EFE
)))
771 UDF_SB_ANCHOR(sb
)[i
] = 0;
777 UDF_SB_LASTBLOCK(sb
) = lastblock
;
781 udf_find_fileset(struct super_block
*sb
, kernel_lb_addr
*fileset
, kernel_lb_addr
*root
)
783 struct buffer_head
*bh
= NULL
;
787 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
788 fileset
->partitionReferenceNum
!= 0xFFFF)
790 bh
= udf_read_ptagged(sb
, *fileset
, 0, &ident
);
794 else if (ident
!= TAG_IDENT_FSD
)
796 udf_release_data(bh
);
802 if (!bh
) /* Search backwards through the partitions */
804 kernel_lb_addr newfileset
;
808 for (newfileset
.partitionReferenceNum
=UDF_SB_NUMPARTS(sb
)-1;
809 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
810 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
811 fileset
->partitionReferenceNum
== 0xFFFF);
812 newfileset
.partitionReferenceNum
--)
814 lastblock
= UDF_SB_PARTLEN(sb
, newfileset
.partitionReferenceNum
);
815 newfileset
.logicalBlockNum
= 0;
819 bh
= udf_read_ptagged(sb
, newfileset
, 0, &ident
);
822 newfileset
.logicalBlockNum
++;
830 struct spaceBitmapDesc
*sp
;
831 sp
= (struct spaceBitmapDesc
*)bh
->b_data
;
832 newfileset
.logicalBlockNum
+= 1 +
833 ((le32_to_cpu(sp
->numOfBytes
) + sizeof(struct spaceBitmapDesc
) - 1)
834 >> sb
->s_blocksize_bits
);
835 udf_release_data(bh
);
840 *fileset
= newfileset
;
845 newfileset
.logicalBlockNum
++;
846 udf_release_data(bh
);
852 while (newfileset
.logicalBlockNum
< lastblock
&&
853 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
854 fileset
->partitionReferenceNum
== 0xFFFF);
858 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
859 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
)
861 udf_debug("Fileset at block=%d, partition=%d\n",
862 fileset
->logicalBlockNum
, fileset
->partitionReferenceNum
);
864 UDF_SB_PARTITION(sb
) = fileset
->partitionReferenceNum
;
865 udf_load_fileset(sb
, bh
, root
);
866 udf_release_data(bh
);
873 udf_load_pvoldesc(struct super_block
*sb
, struct buffer_head
*bh
)
875 struct primaryVolDesc
*pvoldesc
;
881 pvoldesc
= (struct primaryVolDesc
*)bh
->b_data
;
883 if ( udf_stamp_to_time(&recording
, &recording_usec
,
884 lets_to_cpu(pvoldesc
->recordingDateAndTime
)) )
887 ts
= lets_to_cpu(pvoldesc
->recordingDateAndTime
);
888 udf_debug("recording time %ld/%ld, %04u/%02u/%02u %02u:%02u (%x)\n",
889 recording
, recording_usec
,
890 ts
.year
, ts
.month
, ts
.day
, ts
.hour
, ts
.minute
, ts
.typeAndTimezone
);
891 UDF_SB_RECORDTIME(sb
).tv_sec
= recording
;
892 UDF_SB_RECORDTIME(sb
).tv_nsec
= recording_usec
* 1000;
895 if ( !udf_build_ustr(&instr
, pvoldesc
->volIdent
, 32) )
897 if (udf_CS0toUTF8(&outstr
, &instr
))
899 strncpy( UDF_SB_VOLIDENT(sb
), outstr
.u_name
,
900 outstr
.u_len
> 31 ? 31 : outstr
.u_len
);
901 udf_debug("volIdent[] = '%s'\n", UDF_SB_VOLIDENT(sb
));
905 if ( !udf_build_ustr(&instr
, pvoldesc
->volSetIdent
, 128) )
907 if (udf_CS0toUTF8(&outstr
, &instr
))
908 udf_debug("volSetIdent[] = '%s'\n", outstr
.u_name
);
913 udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
, kernel_lb_addr
*root
)
915 struct fileSetDesc
*fset
;
917 fset
= (struct fileSetDesc
*)bh
->b_data
;
919 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
921 UDF_SB_SERIALNUM(sb
) = le16_to_cpu(fset
->descTag
.tagSerialNum
);
923 udf_debug("Rootdir at block=%d, partition=%d\n",
924 root
->logicalBlockNum
, root
->partitionReferenceNum
);
928 udf_load_partdesc(struct super_block
*sb
, struct buffer_head
*bh
)
930 struct partitionDesc
*p
;
933 p
= (struct partitionDesc
*)bh
->b_data
;
935 for (i
=0; i
<UDF_SB_NUMPARTS(sb
); i
++)
937 udf_debug("Searching map: (%d == %d)\n",
938 UDF_SB_PARTMAPS(sb
)[i
].s_partition_num
, le16_to_cpu(p
->partitionNumber
));
939 if (UDF_SB_PARTMAPS(sb
)[i
].s_partition_num
== le16_to_cpu(p
->partitionNumber
))
941 UDF_SB_PARTLEN(sb
,i
) = le32_to_cpu(p
->partitionLength
); /* blocks */
942 UDF_SB_PARTROOT(sb
,i
) = le32_to_cpu(p
->partitionStartingLocation
);
943 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_READ_ONLY
)
944 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_READ_ONLY
;
945 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_WRITE_ONCE
)
946 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_WRITE_ONCE
;
947 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_REWRITABLE
)
948 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_REWRITABLE
;
949 if (le32_to_cpu(p
->accessType
) == PD_ACCESS_TYPE_OVERWRITABLE
)
950 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_OVERWRITABLE
;
952 if (!strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR02
) ||
953 !strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR03
))
955 struct partitionHeaderDesc
*phd
;
957 phd
= (struct partitionHeaderDesc
*)(p
->partitionContentsUse
);
958 if (phd
->unallocSpaceTable
.extLength
)
960 kernel_lb_addr loc
= { le32_to_cpu(phd
->unallocSpaceTable
.extPosition
), i
};
962 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_table
=
964 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_UNALLOC_TABLE
;
965 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
966 i
, UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_table
->i_ino
);
968 if (phd
->unallocSpaceBitmap
.extLength
)
970 UDF_SB_ALLOC_BITMAP(sb
, i
, s_uspace
);
971 if (UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
!= NULL
)
973 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
->s_extLength
=
974 le32_to_cpu(phd
->unallocSpaceBitmap
.extLength
);
975 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
->s_extPosition
=
976 le32_to_cpu(phd
->unallocSpaceBitmap
.extPosition
);
977 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_UNALLOC_BITMAP
;
978 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
979 i
, UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.s_bitmap
->s_extPosition
);
982 if (phd
->partitionIntegrityTable
.extLength
)
983 udf_debug("partitionIntegrityTable (part %d)\n", i
);
984 if (phd
->freedSpaceTable
.extLength
)
986 kernel_lb_addr loc
= { le32_to_cpu(phd
->freedSpaceTable
.extPosition
), i
};
988 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_table
=
990 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_FREED_TABLE
;
991 udf_debug("freedSpaceTable (part %d) @ %ld\n",
992 i
, UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_table
->i_ino
);
994 if (phd
->freedSpaceBitmap
.extLength
)
996 UDF_SB_ALLOC_BITMAP(sb
, i
, s_fspace
);
997 if (UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
!= NULL
)
999 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
->s_extLength
=
1000 le32_to_cpu(phd
->freedSpaceBitmap
.extLength
);
1001 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
->s_extPosition
=
1002 le32_to_cpu(phd
->freedSpaceBitmap
.extPosition
);
1003 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_FREED_BITMAP
;
1004 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1005 i
, UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.s_bitmap
->s_extPosition
);
1012 if (i
== UDF_SB_NUMPARTS(sb
))
1014 udf_debug("Partition (%d) not found in partition map\n", le16_to_cpu(p
->partitionNumber
));
1018 udf_debug("Partition (%d:%d type %x) starts at physical %d, block length %d\n",
1019 le16_to_cpu(p
->partitionNumber
), i
, UDF_SB_PARTTYPE(sb
,i
),
1020 UDF_SB_PARTROOT(sb
,i
), UDF_SB_PARTLEN(sb
,i
));
1025 udf_load_logicalvol(struct super_block
*sb
, struct buffer_head
* bh
, kernel_lb_addr
*fileset
)
1027 struct logicalVolDesc
*lvd
;
1031 lvd
= (struct logicalVolDesc
*)bh
->b_data
;
1033 UDF_SB_ALLOC_PARTMAPS(sb
, le32_to_cpu(lvd
->numPartitionMaps
));
1036 i
<UDF_SB_NUMPARTS(sb
) && offset
<le32_to_cpu(lvd
->mapTableLength
);
1037 i
++,offset
+=((struct genericPartitionMap
*)&(lvd
->partitionMaps
[offset
]))->partitionMapLength
)
1039 type
= ((struct genericPartitionMap
*)&(lvd
->partitionMaps
[offset
]))->partitionMapType
;
1042 struct genericPartitionMap1
*gpm1
= (struct genericPartitionMap1
*)&(lvd
->partitionMaps
[offset
]);
1043 UDF_SB_PARTTYPE(sb
,i
) = UDF_TYPE1_MAP15
;
1044 UDF_SB_PARTVSN(sb
,i
) = le16_to_cpu(gpm1
->volSeqNum
);
1045 UDF_SB_PARTNUM(sb
,i
) = le16_to_cpu(gpm1
->partitionNum
);
1046 UDF_SB_PARTFUNC(sb
,i
) = NULL
;
1050 struct udfPartitionMap2
*upm2
= (struct udfPartitionMap2
*)&(lvd
->partitionMaps
[offset
]);
1051 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
, strlen(UDF_ID_VIRTUAL
)))
1053 if (le16_to_cpu(((__le16
*)upm2
->partIdent
.identSuffix
)[0]) == 0x0150)
1055 UDF_SB_PARTTYPE(sb
,i
) = UDF_VIRTUAL_MAP15
;
1056 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_virt15
;
1058 else if (le16_to_cpu(((__le16
*)upm2
->partIdent
.identSuffix
)[0]) == 0x0200)
1060 UDF_SB_PARTTYPE(sb
,i
) = UDF_VIRTUAL_MAP20
;
1061 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_virt20
;
1064 else if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_SPARABLE
, strlen(UDF_ID_SPARABLE
)))
1068 struct sparingTable
*st
;
1069 struct sparablePartitionMap
*spm
= (struct sparablePartitionMap
*)&(lvd
->partitionMaps
[offset
]);
1071 UDF_SB_PARTTYPE(sb
,i
) = UDF_SPARABLE_MAP15
;
1072 UDF_SB_TYPESPAR(sb
,i
).s_packet_len
= le16_to_cpu(spm
->packetLength
);
1073 for (j
=0; j
<spm
->numSparingTables
; j
++)
1075 loc
= le32_to_cpu(spm
->locSparingTable
[j
]);
1076 UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
] =
1077 udf_read_tagged(sb
, loc
, loc
, &ident
);
1078 if (UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
] != NULL
)
1080 st
= (struct sparingTable
*)UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
]->b_data
;
1082 strncmp(st
->sparingIdent
.ident
, UDF_ID_SPARING
, strlen(UDF_ID_SPARING
)))
1084 udf_release_data(UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
]);
1085 UDF_SB_TYPESPAR(sb
,i
).s_spar_map
[j
] = NULL
;
1089 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_spar15
;
1093 udf_debug("Unknown ident: %s\n", upm2
->partIdent
.ident
);
1096 UDF_SB_PARTVSN(sb
,i
) = le16_to_cpu(upm2
->volSeqNum
);
1097 UDF_SB_PARTNUM(sb
,i
) = le16_to_cpu(upm2
->partitionNum
);
1099 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1100 i
, UDF_SB_PARTNUM(sb
,i
), type
, UDF_SB_PARTVSN(sb
,i
));
1105 long_ad
*la
= (long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
1107 *fileset
= lelb_to_cpu(la
->extLocation
);
1108 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1109 fileset
->logicalBlockNum
,
1110 fileset
->partitionReferenceNum
);
1112 if (lvd
->integritySeqExt
.extLength
)
1113 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
1118 * udf_load_logicalvolint
1122 udf_load_logicalvolint(struct super_block
*sb
, kernel_extent_ad loc
)
1124 struct buffer_head
*bh
= NULL
;
1127 while (loc
.extLength
> 0 &&
1128 (bh
= udf_read_tagged(sb
, loc
.extLocation
,
1129 loc
.extLocation
, &ident
)) &&
1130 ident
== TAG_IDENT_LVID
)
1132 UDF_SB_LVIDBH(sb
) = bh
;
1134 if (UDF_SB_LVID(sb
)->nextIntegrityExt
.extLength
)
1135 udf_load_logicalvolint(sb
, leea_to_cpu(UDF_SB_LVID(sb
)->nextIntegrityExt
));
1137 if (UDF_SB_LVIDBH(sb
) != bh
)
1138 udf_release_data(bh
);
1139 loc
.extLength
-= sb
->s_blocksize
;
1142 if (UDF_SB_LVIDBH(sb
) != bh
)
1143 udf_release_data(bh
);
1147 * udf_process_sequence
1150 * Process a main/reserve volume descriptor sequence.
1153 * sb Pointer to _locked_ superblock.
1154 * block First block of first extent of the sequence.
1155 * lastblock Lastblock of first extent of the sequence.
1158 * July 1, 1997 - Andrew E. Mileski
1159 * Written, tested, and released.
1162 udf_process_sequence(struct super_block
*sb
, long block
, long lastblock
, kernel_lb_addr
*fileset
)
1164 struct buffer_head
*bh
= NULL
;
1165 struct udf_vds_record vds
[VDS_POS_LENGTH
];
1166 struct generic_desc
*gd
;
1167 struct volDescPtr
*vdp
;
1172 long next_s
= 0, next_e
= 0;
1174 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
1176 /* Read the main descriptor sequence */
1177 for (;(!done
&& block
<= lastblock
); block
++)
1180 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1184 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1185 gd
= (struct generic_desc
*)bh
->b_data
;
1186 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
1189 case TAG_IDENT_PVD
: /* ISO 13346 3/10.1 */
1190 if (vdsn
>= vds
[VDS_POS_PRIMARY_VOL_DESC
].volDescSeqNum
)
1192 vds
[VDS_POS_PRIMARY_VOL_DESC
].volDescSeqNum
= vdsn
;
1193 vds
[VDS_POS_PRIMARY_VOL_DESC
].block
= block
;
1196 case TAG_IDENT_VDP
: /* ISO 13346 3/10.3 */
1197 if (vdsn
>= vds
[VDS_POS_VOL_DESC_PTR
].volDescSeqNum
)
1199 vds
[VDS_POS_VOL_DESC_PTR
].volDescSeqNum
= vdsn
;
1200 vds
[VDS_POS_VOL_DESC_PTR
].block
= block
;
1202 vdp
= (struct volDescPtr
*)bh
->b_data
;
1203 next_s
= le32_to_cpu(vdp
->nextVolDescSeqExt
.extLocation
);
1204 next_e
= le32_to_cpu(vdp
->nextVolDescSeqExt
.extLength
);
1205 next_e
= next_e
>> sb
->s_blocksize_bits
;
1209 case TAG_IDENT_IUVD
: /* ISO 13346 3/10.4 */
1210 if (vdsn
>= vds
[VDS_POS_IMP_USE_VOL_DESC
].volDescSeqNum
)
1212 vds
[VDS_POS_IMP_USE_VOL_DESC
].volDescSeqNum
= vdsn
;
1213 vds
[VDS_POS_IMP_USE_VOL_DESC
].block
= block
;
1216 case TAG_IDENT_PD
: /* ISO 13346 3/10.5 */
1217 if (!vds
[VDS_POS_PARTITION_DESC
].block
)
1218 vds
[VDS_POS_PARTITION_DESC
].block
= block
;
1220 case TAG_IDENT_LVD
: /* ISO 13346 3/10.6 */
1221 if (vdsn
>= vds
[VDS_POS_LOGICAL_VOL_DESC
].volDescSeqNum
)
1223 vds
[VDS_POS_LOGICAL_VOL_DESC
].volDescSeqNum
= vdsn
;
1224 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
= block
;
1227 case TAG_IDENT_USD
: /* ISO 13346 3/10.8 */
1228 if (vdsn
>= vds
[VDS_POS_UNALLOC_SPACE_DESC
].volDescSeqNum
)
1230 vds
[VDS_POS_UNALLOC_SPACE_DESC
].volDescSeqNum
= vdsn
;
1231 vds
[VDS_POS_UNALLOC_SPACE_DESC
].block
= block
;
1234 case TAG_IDENT_TD
: /* ISO 13346 3/10.9 */
1235 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1240 next_s
= next_e
= 0;
1246 udf_release_data(bh
);
1248 for (i
=0; i
<VDS_POS_LENGTH
; i
++)
1252 bh
= udf_read_tagged(sb
, vds
[i
].block
, vds
[i
].block
, &ident
);
1254 if (i
== VDS_POS_PRIMARY_VOL_DESC
)
1255 udf_load_pvoldesc(sb
, bh
);
1256 else if (i
== VDS_POS_LOGICAL_VOL_DESC
)
1257 udf_load_logicalvol(sb
, bh
, fileset
);
1258 else if (i
== VDS_POS_PARTITION_DESC
)
1260 struct buffer_head
*bh2
= NULL
;
1261 udf_load_partdesc(sb
, bh
);
1262 for (j
=vds
[i
].block
+1; j
<vds
[VDS_POS_TERMINATING_DESC
].block
; j
++)
1264 bh2
= udf_read_tagged(sb
, j
, j
, &ident
);
1265 gd
= (struct generic_desc
*)bh2
->b_data
;
1266 if (ident
== TAG_IDENT_PD
)
1267 udf_load_partdesc(sb
, bh2
);
1268 udf_release_data(bh2
);
1271 udf_release_data(bh
);
1282 udf_check_valid(struct super_block
*sb
, int novrs
, int silent
)
1288 udf_debug("Validity check skipped because of novrs option\n");
1291 /* Check that it is NSR02 compliant */
1292 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
1293 else if ((block
= udf_vrs(sb
, silent
)) == -1)
1295 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1296 if (!UDF_SB_LASTBLOCK(sb
))
1297 UDF_SB_LASTBLOCK(sb
) = udf_get_last_block(sb
);
1305 udf_load_partition(struct super_block
*sb
, kernel_lb_addr
*fileset
)
1307 struct anchorVolDescPtr
*anchor
;
1309 struct buffer_head
*bh
;
1310 long main_s
, main_e
, reserve_s
, reserve_e
;
1316 for (i
=0; i
<sizeof(UDF_SB_ANCHOR(sb
))/sizeof(int); i
++)
1318 if (UDF_SB_ANCHOR(sb
)[i
] && (bh
= udf_read_tagged(sb
,
1319 UDF_SB_ANCHOR(sb
)[i
], UDF_SB_ANCHOR(sb
)[i
], &ident
)))
1321 anchor
= (struct anchorVolDescPtr
*)bh
->b_data
;
1323 /* Locate the main sequence */
1324 main_s
= le32_to_cpu( anchor
->mainVolDescSeqExt
.extLocation
);
1325 main_e
= le32_to_cpu( anchor
->mainVolDescSeqExt
.extLength
);
1326 main_e
= main_e
>> sb
->s_blocksize_bits
;
1329 /* Locate the reserve sequence */
1330 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1331 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1332 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1333 reserve_e
+= reserve_s
;
1335 udf_release_data(bh
);
1337 /* Process the main & reserve sequences */
1338 /* responsible for finding the PartitionDesc(s) */
1339 if (!(udf_process_sequence(sb
, main_s
, main_e
, fileset
) &&
1340 udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
)))
1347 if (i
== sizeof(UDF_SB_ANCHOR(sb
))/sizeof(int))
1349 udf_debug("No Anchor block found\n");
1353 udf_debug("Using anchor in block %d\n", UDF_SB_ANCHOR(sb
)[i
]);
1355 for (i
=0; i
<UDF_SB_NUMPARTS(sb
); i
++)
1357 switch UDF_SB_PARTTYPE(sb
, i
)
1359 case UDF_VIRTUAL_MAP15
:
1360 case UDF_VIRTUAL_MAP20
:
1364 if (!UDF_SB_LASTBLOCK(sb
))
1366 UDF_SB_LASTBLOCK(sb
) = udf_get_last_block(sb
);
1367 udf_find_anchor(sb
);
1370 if (!UDF_SB_LASTBLOCK(sb
))
1372 udf_debug("Unable to determine Lastblock (For Virtual Partition)\n");
1376 for (j
=0; j
<UDF_SB_NUMPARTS(sb
); j
++)
1379 UDF_SB_PARTVSN(sb
,i
) == UDF_SB_PARTVSN(sb
,j
) &&
1380 UDF_SB_PARTNUM(sb
,i
) == UDF_SB_PARTNUM(sb
,j
))
1382 ino
.partitionReferenceNum
= j
;
1383 ino
.logicalBlockNum
= UDF_SB_LASTBLOCK(sb
) -
1384 UDF_SB_PARTROOT(sb
,j
);
1389 if (j
== UDF_SB_NUMPARTS(sb
))
1392 if (!(UDF_SB_VAT(sb
) = udf_iget(sb
, ino
)))
1395 if (UDF_SB_PARTTYPE(sb
,i
) == UDF_VIRTUAL_MAP15
)
1397 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
= udf_ext0_offset(UDF_SB_VAT(sb
));
1398 UDF_SB_TYPEVIRT(sb
,i
).s_num_entries
= (UDF_SB_VAT(sb
)->i_size
- 36) >> 2;
1400 else if (UDF_SB_PARTTYPE(sb
,i
) == UDF_VIRTUAL_MAP20
)
1402 struct buffer_head
*bh
= NULL
;
1405 pos
= udf_block_map(UDF_SB_VAT(sb
), 0);
1406 bh
= sb_bread(sb
, pos
);
1407 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
=
1408 le16_to_cpu(((struct virtualAllocationTable20
*)bh
->b_data
+ udf_ext0_offset(UDF_SB_VAT(sb
)))->lengthHeader
) +
1409 udf_ext0_offset(UDF_SB_VAT(sb
));
1410 UDF_SB_TYPEVIRT(sb
,i
).s_num_entries
= (UDF_SB_VAT(sb
)->i_size
-
1411 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
) >> 2;
1412 udf_release_data(bh
);
1414 UDF_SB_PARTROOT(sb
,i
) = udf_get_pblock(sb
, 0, i
, 0);
1415 UDF_SB_PARTLEN(sb
,i
) = UDF_SB_PARTLEN(sb
,ino
.partitionReferenceNum
);
1422 static void udf_open_lvid(struct super_block
*sb
)
1424 if (UDF_SB_LVIDBH(sb
))
1427 kernel_timestamp cpu_time
;
1429 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1430 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1431 if (udf_time_to_stamp(&cpu_time
, CURRENT_TIME
))
1432 UDF_SB_LVID(sb
)->recordingDateAndTime
= cpu_to_lets(cpu_time
);
1433 UDF_SB_LVID(sb
)->integrityType
= LVID_INTEGRITY_TYPE_OPEN
;
1435 UDF_SB_LVID(sb
)->descTag
.descCRC
=
1436 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb
) + sizeof(tag
),
1437 le16_to_cpu(UDF_SB_LVID(sb
)->descTag
.descCRCLength
), 0));
1439 UDF_SB_LVID(sb
)->descTag
.tagChecksum
= 0;
1440 for (i
=0; i
<16; i
++)
1442 UDF_SB_LVID(sb
)->descTag
.tagChecksum
+=
1443 ((uint8_t *)&(UDF_SB_LVID(sb
)->descTag
))[i
];
1445 mark_buffer_dirty(UDF_SB_LVIDBH(sb
));
1449 static void udf_close_lvid(struct super_block
*sb
)
1451 if (UDF_SB_LVIDBH(sb
) &&
1452 UDF_SB_LVID(sb
)->integrityType
== LVID_INTEGRITY_TYPE_OPEN
)
1455 kernel_timestamp cpu_time
;
1457 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1458 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1459 if (udf_time_to_stamp(&cpu_time
, CURRENT_TIME
))
1460 UDF_SB_LVID(sb
)->recordingDateAndTime
= cpu_to_lets(cpu_time
);
1461 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(UDF_SB_LVIDIU(sb
)->maxUDFWriteRev
))
1462 UDF_SB_LVIDIU(sb
)->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
1463 if (UDF_SB_UDFREV(sb
) > le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
))
1464 UDF_SB_LVIDIU(sb
)->minUDFReadRev
= cpu_to_le16(UDF_SB_UDFREV(sb
));
1465 if (UDF_SB_UDFREV(sb
) > le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
))
1466 UDF_SB_LVIDIU(sb
)->minUDFWriteRev
= cpu_to_le16(UDF_SB_UDFREV(sb
));
1467 UDF_SB_LVID(sb
)->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE
);
1469 UDF_SB_LVID(sb
)->descTag
.descCRC
=
1470 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb
) + sizeof(tag
),
1471 le16_to_cpu(UDF_SB_LVID(sb
)->descTag
.descCRCLength
), 0));
1473 UDF_SB_LVID(sb
)->descTag
.tagChecksum
= 0;
1474 for (i
=0; i
<16; i
++)
1476 UDF_SB_LVID(sb
)->descTag
.tagChecksum
+=
1477 ((uint8_t *)&(UDF_SB_LVID(sb
)->descTag
))[i
];
1479 mark_buffer_dirty(UDF_SB_LVIDBH(sb
));
1487 * Complete the specified super block.
1490 * sb Pointer to superblock to complete - never NULL.
1491 * sb->s_dev Device to read suberblock from.
1492 * options Pointer to mount options.
1493 * silent Silent flag.
1496 * July 1, 1997 - Andrew E. Mileski
1497 * Written, tested, and released.
1499 static int udf_fill_super(struct super_block
*sb
, void *options
, int silent
)
1502 struct inode
*inode
=NULL
;
1503 struct udf_options uopt
;
1504 kernel_lb_addr rootdir
, fileset
;
1505 struct udf_sb_info
*sbi
;
1507 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
) | (1 << UDF_FLAG_STRICT
);
1512 sbi
= kmalloc(sizeof(struct udf_sb_info
), GFP_KERNEL
);
1515 sb
->s_fs_info
= sbi
;
1516 memset(UDF_SB(sb
), 0x00, sizeof(struct udf_sb_info
));
1518 init_MUTEX(&sbi
->s_alloc_sem
);
1520 if (!udf_parse_options((char *)options
, &uopt
))
1523 if (uopt
.flags
& (1 << UDF_FLAG_UTF8
) &&
1524 uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
))
1526 udf_error(sb
, "udf_read_super",
1527 "utf8 cannot be combined with iocharset\n");
1530 #ifdef CONFIG_UDF_NLS
1531 if ((uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) && !uopt
.nls_map
)
1533 uopt
.nls_map
= load_nls_default();
1535 uopt
.flags
&= ~(1 << UDF_FLAG_NLS_MAP
);
1537 udf_debug("Using default NLS map\n");
1540 if (!(uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)))
1541 uopt
.flags
|= (1 << UDF_FLAG_UTF8
);
1543 fileset
.logicalBlockNum
= 0xFFFFFFFF;
1544 fileset
.partitionReferenceNum
= 0xFFFF;
1546 UDF_SB(sb
)->s_flags
= uopt
.flags
;
1547 UDF_SB(sb
)->s_uid
= uopt
.uid
;
1548 UDF_SB(sb
)->s_gid
= uopt
.gid
;
1549 UDF_SB(sb
)->s_umask
= uopt
.umask
;
1550 UDF_SB(sb
)->s_nls_map
= uopt
.nls_map
;
1552 /* Set the block size for all transfers */
1553 if (!udf_set_blocksize(sb
, uopt
.blocksize
))
1556 if ( uopt
.session
== 0xFFFFFFFF )
1557 UDF_SB_SESSION(sb
) = udf_get_last_session(sb
);
1559 UDF_SB_SESSION(sb
) = uopt
.session
;
1561 udf_debug("Multi-session=%d\n", UDF_SB_SESSION(sb
));
1563 UDF_SB_LASTBLOCK(sb
) = uopt
.lastblock
;
1564 UDF_SB_ANCHOR(sb
)[0] = UDF_SB_ANCHOR(sb
)[1] = 0;
1565 UDF_SB_ANCHOR(sb
)[2] = uopt
.anchor
;
1566 UDF_SB_ANCHOR(sb
)[3] = 256;
1568 if (udf_check_valid(sb
, uopt
.novrs
, silent
)) /* read volume recognition sequences */
1570 printk("UDF-fs: No VRS found\n");
1574 udf_find_anchor(sb
);
1576 /* Fill in the rest of the superblock */
1577 sb
->s_op
= &udf_sb_ops
;
1580 sb
->s_magic
= UDF_SUPER_MAGIC
;
1581 sb
->s_time_gran
= 1000;
1583 if (udf_load_partition(sb
, &fileset
))
1585 printk("UDF-fs: No partition found (1)\n");
1589 udf_debug("Lastblock=%d\n", UDF_SB_LASTBLOCK(sb
));
1591 if ( UDF_SB_LVIDBH(sb
) )
1593 uint16_t minUDFReadRev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
);
1594 uint16_t minUDFWriteRev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
);
1595 /* uint16_t maxUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev); */
1597 if (minUDFReadRev
> UDF_MAX_READ_VERSION
)
1599 printk("UDF-fs: minUDFReadRev=%x (max is %x)\n",
1600 le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
),
1601 UDF_MAX_READ_VERSION
);
1604 else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
)
1606 sb
->s_flags
|= MS_RDONLY
;
1609 UDF_SB_UDFREV(sb
) = minUDFWriteRev
;
1611 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
1612 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
1613 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
1614 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
1617 if ( !UDF_SB_NUMPARTS(sb
) )
1619 printk("UDF-fs: No partition found (2)\n");
1623 if ( udf_find_fileset(sb
, &fileset
, &rootdir
) )
1625 printk("UDF-fs: No fileset found\n");
1631 kernel_timestamp ts
;
1632 udf_time_to_stamp(&ts
, UDF_SB_RECORDTIME(sb
));
1633 udf_info("UDF %s (%s) Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
1634 UDFFS_VERSION
, UDFFS_DATE
,
1635 UDF_SB_VOLIDENT(sb
), ts
.year
, ts
.month
, ts
.day
, ts
.hour
, ts
.minute
,
1636 ts
.typeAndTimezone
);
1638 if (!(sb
->s_flags
& MS_RDONLY
))
1641 /* Assign the root inode */
1642 /* assign inodes by physical block number */
1643 /* perhaps it's not extensible enough, but for now ... */
1644 inode
= udf_iget(sb
, rootdir
);
1647 printk("UDF-fs: Error in udf_iget, block=%d, partition=%d\n",
1648 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
1652 /* Allocate a dentry for the root inode */
1653 sb
->s_root
= d_alloc_root(inode
);
1656 printk("UDF-fs: Couldn't allocate root dentry\n");
1660 sb
->s_maxbytes
= MAX_LFS_FILESIZE
;
1665 iput(UDF_SB_VAT(sb
));
1666 if (UDF_SB_NUMPARTS(sb
))
1668 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_TABLE
)
1669 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_table
);
1670 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_TABLE
)
1671 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_table
);
1672 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1673 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_uspace
);
1674 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1675 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_fspace
);
1676 if (UDF_SB_PARTTYPE(sb
, UDF_SB_PARTITION(sb
)) == UDF_SPARABLE_MAP15
)
1679 udf_release_data(UDF_SB_TYPESPAR(sb
, UDF_SB_PARTITION(sb
)).s_spar_map
[i
]);
1682 #ifdef CONFIG_UDF_NLS
1683 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
1684 unload_nls(UDF_SB(sb
)->s_nls_map
);
1686 if (!(sb
->s_flags
& MS_RDONLY
))
1688 udf_release_data(UDF_SB_LVIDBH(sb
));
1691 sb
->s_fs_info
= NULL
;
1695 void udf_error(struct super_block
*sb
, const char *function
,
1696 const char *fmt
, ...)
1700 if (!(sb
->s_flags
& MS_RDONLY
))
1705 va_start(args
, fmt
);
1706 vsprintf(error_buf
, fmt
, args
);
1708 printk (KERN_CRIT
"UDF-fs error (device %s): %s: %s\n",
1709 sb
->s_id
, function
, error_buf
);
1712 void udf_warning(struct super_block
*sb
, const char *function
,
1713 const char *fmt
, ...)
1717 va_start (args
, fmt
);
1718 vsprintf(error_buf
, fmt
, args
);
1720 printk(KERN_WARNING
"UDF-fs warning (device %s): %s: %s\n",
1721 sb
->s_id
, function
, error_buf
);
1728 * Prepare for destruction of the superblock.
1731 * Called before the filesystem is unmounted.
1734 * July 1, 1997 - Andrew E. Mileski
1735 * Written, tested, and released.
1738 udf_put_super(struct super_block
*sb
)
1743 iput(UDF_SB_VAT(sb
));
1744 if (UDF_SB_NUMPARTS(sb
))
1746 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_TABLE
)
1747 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_table
);
1748 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_TABLE
)
1749 iput(UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_table
);
1750 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1751 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_uspace
);
1752 if (UDF_SB_PARTFLAGS(sb
, UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1753 UDF_SB_FREE_BITMAP(sb
,UDF_SB_PARTITION(sb
),s_fspace
);
1754 if (UDF_SB_PARTTYPE(sb
, UDF_SB_PARTITION(sb
)) == UDF_SPARABLE_MAP15
)
1757 udf_release_data(UDF_SB_TYPESPAR(sb
, UDF_SB_PARTITION(sb
)).s_spar_map
[i
]);
1760 #ifdef CONFIG_UDF_NLS
1761 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
1762 unload_nls(UDF_SB(sb
)->s_nls_map
);
1764 if (!(sb
->s_flags
& MS_RDONLY
))
1766 udf_release_data(UDF_SB_LVIDBH(sb
));
1768 kfree(sb
->s_fs_info
);
1769 sb
->s_fs_info
= NULL
;
1776 * Return info about the filesystem.
1779 * Called by sys_statfs()
1782 * July 1, 1997 - Andrew E. Mileski
1783 * Written, tested, and released.
1786 udf_statfs(struct super_block
*sb
, struct kstatfs
*buf
)
1788 buf
->f_type
= UDF_SUPER_MAGIC
;
1789 buf
->f_bsize
= sb
->s_blocksize
;
1790 buf
->f_blocks
= UDF_SB_PARTLEN(sb
, UDF_SB_PARTITION(sb
));
1791 buf
->f_bfree
= udf_count_free(sb
);
1792 buf
->f_bavail
= buf
->f_bfree
;
1793 buf
->f_files
= (UDF_SB_LVIDBH(sb
) ?
1794 (le32_to_cpu(UDF_SB_LVIDIU(sb
)->numFiles
) +
1795 le32_to_cpu(UDF_SB_LVIDIU(sb
)->numDirs
)) : 0) + buf
->f_bfree
;
1796 buf
->f_ffree
= buf
->f_bfree
;
1797 /* __kernel_fsid_t f_fsid */
1798 buf
->f_namelen
= UDF_NAME_LEN
-2;
1803 static unsigned char udf_bitmap_lookup
[16] = {
1804 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
1808 udf_count_free_bitmap(struct super_block
*sb
, struct udf_bitmap
*bitmap
)
1810 struct buffer_head
*bh
= NULL
;
1811 unsigned int accum
= 0;
1813 int block
= 0, newblock
;
1819 struct spaceBitmapDesc
*bm
;
1823 loc
.logicalBlockNum
= bitmap
->s_extPosition
;
1824 loc
.partitionReferenceNum
= UDF_SB_PARTITION(sb
);
1825 bh
= udf_read_ptagged(sb
, loc
, 0, &ident
);
1829 printk(KERN_ERR
"udf: udf_count_free failed\n");
1832 else if (ident
!= TAG_IDENT_SBD
)
1834 udf_release_data(bh
);
1835 printk(KERN_ERR
"udf: udf_count_free failed\n");
1839 bm
= (struct spaceBitmapDesc
*)bh
->b_data
;
1840 bytes
= le32_to_cpu(bm
->numOfBytes
);
1841 index
= sizeof(struct spaceBitmapDesc
); /* offset in first block only */
1842 ptr
= (uint8_t *)bh
->b_data
;
1846 while ((bytes
> 0) && (index
< sb
->s_blocksize
))
1849 accum
+= udf_bitmap_lookup
[ value
& 0x0f ];
1850 accum
+= udf_bitmap_lookup
[ value
>> 4 ];
1856 udf_release_data(bh
);
1857 newblock
= udf_get_lb_pblock(sb
, loc
, ++block
);
1858 bh
= udf_tread(sb
, newblock
);
1861 udf_debug("read failed\n");
1865 ptr
= (uint8_t *)bh
->b_data
;
1868 udf_release_data(bh
);
1877 udf_count_free_table(struct super_block
*sb
, struct inode
* table
)
1879 unsigned int accum
= 0;
1880 uint32_t extoffset
, elen
;
1881 kernel_lb_addr bloc
, eloc
;
1883 struct buffer_head
*bh
= NULL
;
1887 bloc
= UDF_I_LOCATION(table
);
1888 extoffset
= sizeof(struct unallocSpaceEntry
);
1890 while ((etype
= udf_next_aext(table
, &bloc
, &extoffset
, &eloc
, &elen
, &bh
, 1)) != -1)
1892 accum
+= (elen
>> table
->i_sb
->s_blocksize_bits
);
1894 udf_release_data(bh
);
1902 udf_count_free(struct super_block
*sb
)
1904 unsigned int accum
= 0;
1906 if (UDF_SB_LVIDBH(sb
))
1908 if (le32_to_cpu(UDF_SB_LVID(sb
)->numOfPartitions
) > UDF_SB_PARTITION(sb
))
1910 accum
= le32_to_cpu(UDF_SB_LVID(sb
)->freeSpaceTable
[UDF_SB_PARTITION(sb
)]);
1912 if (accum
== 0xFFFFFFFF)
1920 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1922 accum
+= udf_count_free_bitmap(sb
,
1923 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_bitmap
);
1925 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1927 accum
+= udf_count_free_bitmap(sb
,
1928 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_bitmap
);
1933 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_TABLE
)
1935 accum
+= udf_count_free_table(sb
,
1936 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.s_table
);
1938 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_TABLE
)
1940 accum
+= udf_count_free_table(sb
,
1941 UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.s_table
);