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 * E-mail regarding any portion of the Linux UDF file system should be
19 * directed to the development team mailing list (run by majordomo):
20 * linux_udf@hootie.lvld.hp.com
23 * This file is distributed under the terms of the GNU General Public
24 * License (GPL). Copies of the GPL can be obtained from:
25 * ftp://prep.ai.mit.edu/pub/gnu/GPL
26 * Each contributing author retains all rights to their own work.
28 * (C) 1998 Dave Boynton
29 * (C) 1998-2000 Ben Fennema
30 * (C) 2000 Stelias Computing Inc
34 * 09/24/98 dgb changed to allow compiling outside of kernel, and
35 * added some debugging.
36 * 10/01/98 dgb updated to allow (some) possibility of compiling w/2.0.34
37 * 10/16/98 attempting some multi-session support
38 * 10/17/98 added freespace count for "df"
39 * 11/11/98 gr added novrs option
40 * 11/26/98 dgb added fileset,anchor mount options
41 * 12/06/98 blf really hosed things royally. vat/sparing support. sequenced vol descs
42 * rewrote option handling based on isofs
43 * 12/20/98 find the free space bitmap (if it exists)
48 #include <linux/config.h>
49 #include <linux/version.h>
50 #include <linux/blkdev.h>
51 #include <linux/malloc.h>
52 #include <linux/kernel.h>
53 #include <linux/locks.h>
54 #include <linux/module.h>
55 #include <linux/stat.h>
56 #include <linux/cdrom.h>
57 #include <linux/nls.h>
58 #include <asm/byteorder.h>
60 #include <linux/udf_fs.h>
64 #include <linux/init.h>
65 #include <asm/uaccess.h>
67 #define VDS_POS_PRIMARY_VOL_DESC 0
68 #define VDS_POS_UNALLOC_SPACE_DESC 1
69 #define VDS_POS_LOGICAL_VOL_DESC 2
70 #define VDS_POS_PARTITION_DESC 3
71 #define VDS_POS_IMP_USE_VOL_DESC 4
72 #define VDS_POS_VOL_DESC_PTR 5
73 #define VDS_POS_TERMINATING_DESC 6
74 #define VDS_POS_LENGTH 7
76 static char error_buf
[1024];
78 /* These are the "meat" - everything else is stuffing */
79 static struct super_block
*udf_read_super(struct super_block
*, void *, int);
80 static void udf_put_super(struct super_block
*);
81 static void udf_write_super(struct super_block
*);
82 static int udf_remount_fs(struct super_block
*, int *, char *);
83 static int udf_check_valid(struct super_block
*, int, int);
84 static int udf_vrs(struct super_block
*sb
, int silent
);
85 static int udf_load_partition(struct super_block
*, lb_addr
*);
86 static int udf_load_logicalvol(struct super_block
*, struct buffer_head
*, lb_addr
*);
87 static void udf_load_logicalvolint(struct super_block
*, extent_ad
);
88 static int udf_find_anchor(struct super_block
*, int, int);
89 static int udf_find_fileset(struct super_block
*, lb_addr
*, lb_addr
*);
90 static void udf_load_pvoldesc(struct super_block
*, struct buffer_head
*);
91 static void udf_load_fileset(struct super_block
*, struct buffer_head
*, lb_addr
*);
92 static void udf_load_partdesc(struct super_block
*, struct buffer_head
*);
93 static void udf_open_lvid(struct super_block
*);
94 static void udf_close_lvid(struct super_block
*);
95 static unsigned int udf_count_free(struct super_block
*);
96 static int udf_statfs(struct super_block
*, struct statfs
*);
98 /* UDF filesystem type */
99 static DECLARE_FSTYPE_DEV(udf_fstype
, "udf", udf_read_super
);
101 /* Superblock operations */
102 static struct super_operations udf_sb_ops
= {
103 read_inode
: udf_read_inode
,
104 write_inode
: udf_write_inode
,
105 put_inode
: udf_put_inode
,
106 delete_inode
: udf_delete_inode
,
107 put_super
: udf_put_super
,
108 write_super
: udf_write_super
,
110 remount_fs
: udf_remount_fs
,
116 unsigned int blocksize
;
117 unsigned int session
;
118 unsigned int lastblock
;
121 unsigned short partition
;
122 unsigned int fileset
;
123 unsigned int rootdir
;
130 static int __init
init_udf_fs(void)
132 printk(KERN_NOTICE
"udf: registering filesystem\n");
133 return register_filesystem(&udf_fstype
);
136 static void __exit
exit_udf_fs(void)
138 printk(KERN_NOTICE
"udf: unregistering filesystem\n");
139 unregister_filesystem(&udf_fstype
);
142 module_init(init_udf_fs
)
143 module_exit(exit_udf_fs
)
149 * Parse mount options.
152 * The following mount options are supported:
154 * gid= Set the default group.
155 * umask= Set the default umask.
156 * uid= Set the default user.
157 * bs= Set the block size.
158 * unhide Show otherwise hidden files.
159 * undelete Show deleted files in lists.
160 * adinicb Embed data in the inode (default)
161 * noadinicb Don't embed data in the inode
162 * shortad Use short ad's
163 * longad Use long ad's (default)
164 * strict Set strict conformance (unused)
166 * The remaining are for debugging and disaster recovery:
168 * novrs Skip volume sequence recognition
170 * The following expect a offset from 0.
172 * session= Set the CDROM session (default= last session)
173 * anchor= Override standard anchor location. (default= 256)
174 * volume= Override the VolumeDesc location. (unused)
175 * partition= Override the PartitionDesc location. (unused)
176 * lastblock= Set the last block of the filesystem/
178 * The following expect a offset from the partition root.
180 * fileset= Override the fileset block location. (unused)
181 * rootdir= Override the root directory location. (unused)
182 * WARNING: overriding the rootdir to a non-directory may
183 * yield highly unpredictable results.
186 * options Pointer to mount options string.
187 * uopts Pointer to mount options variable.
190 * <return> 0 Mount options parsed okay.
191 * <return> -1 Error parsing mount options.
194 * July 1, 1997 - Andrew E. Mileski
195 * Written, tested, and released.
199 udf_parse_options(char *options
, struct udf_options
*uopt
)
204 uopt
->blocksize
= 512;
205 uopt
->partition
= 0xFFFF;
206 uopt
->session
= 0xFFFFFFFF;
207 uopt
->lastblock
= 0xFFFFFFFF;
208 uopt
->anchor
= 0xFFFFFFFF;
209 uopt
->volume
= 0xFFFFFFFF;
210 uopt
->rootdir
= 0xFFFFFFFF;
211 uopt
->fileset
= 0xFFFFFFFF;
216 for (opt
= strtok(options
, ","); opt
; opt
= strtok(NULL
, ","))
218 /* Make "opt=val" into two strings */
219 val
= strchr(opt
, '=');
222 if (!strcmp(opt
, "novrs") && !val
)
224 else if (!strcmp(opt
, "bs") && val
)
225 uopt
->blocksize
= simple_strtoul(val
, NULL
, 0);
226 else if (!strcmp(opt
, "unhide") && !val
)
227 uopt
->flags
|= (1 << UDF_FLAG_UNHIDE
);
228 else if (!strcmp(opt
, "undelete") && !val
)
229 uopt
->flags
|= (1 << UDF_FLAG_UNDELETE
);
230 else if (!strcmp(opt
, "noadinicb") && !val
)
231 uopt
->flags
&= ~(1 << UDF_FLAG_USE_AD_IN_ICB
);
232 else if (!strcmp(opt
, "adinicb") && !val
)
233 uopt
->flags
|= (1 << UDF_FLAG_USE_AD_IN_ICB
);
234 else if (!strcmp(opt
, "shortad") && !val
)
235 uopt
->flags
|= (1 << UDF_FLAG_USE_SHORT_AD
);
236 else if (!strcmp(opt
, "longad") && !val
)
237 uopt
->flags
&= ~(1 << UDF_FLAG_USE_SHORT_AD
);
238 else if (!strcmp(opt
, "gid") && val
)
239 uopt
->gid
= simple_strtoul(val
, NULL
, 0);
240 else if (!strcmp(opt
, "umask") && val
)
241 uopt
->umask
= simple_strtoul(val
, NULL
, 0);
242 else if (!strcmp(opt
, "strict") && !val
)
243 uopt
->flags
|= (1 << UDF_FLAG_STRICT
);
244 else if (!strcmp(opt
, "uid") && val
)
245 uopt
->uid
= simple_strtoul(val
, NULL
, 0);
246 else if (!strcmp(opt
, "session") && val
)
247 uopt
->session
= simple_strtoul(val
, NULL
, 0);
248 else if (!strcmp(opt
, "lastblock") && val
)
249 uopt
->lastblock
= simple_strtoul(val
, NULL
, 0);
250 else if (!strcmp(opt
, "anchor") && val
)
251 uopt
->anchor
= simple_strtoul(val
, NULL
, 0);
252 else if (!strcmp(opt
, "volume") && val
)
253 uopt
->volume
= simple_strtoul(val
, NULL
, 0);
254 else if (!strcmp(opt
, "partition") && val
)
255 uopt
->partition
= simple_strtoul(val
, NULL
, 0);
256 else if (!strcmp(opt
, "fileset") && val
)
257 uopt
->fileset
= simple_strtoul(val
, NULL
, 0);
258 else if (!strcmp(opt
, "rootdir") && val
)
259 uopt
->rootdir
= simple_strtoul(val
, NULL
, 0);
262 printk(KERN_ERR
"udf: bad mount option \"%s=%s\"\n",
268 printk(KERN_ERR
"udf: bad mount option \"%s\"\n",
277 udf_write_super(struct super_block
*sb
)
279 if (!(sb
->s_flags
& MS_RDONLY
))
285 udf_remount_fs(struct super_block
*sb
, int *flags
, char *options
)
287 struct udf_options uopt
;
289 uopt
.flags
= UDF_SB(sb
)->s_flags
;
290 uopt
.uid
= UDF_SB(sb
)->s_uid
;
291 uopt
.gid
= UDF_SB(sb
)->s_gid
;
292 uopt
.umask
= UDF_SB(sb
)->s_umask
;
294 if ( !udf_parse_options(options
, &uopt
) )
297 UDF_SB(sb
)->s_flags
= uopt
.flags
;
298 UDF_SB(sb
)->s_uid
= uopt
.uid
;
299 UDF_SB(sb
)->s_gid
= uopt
.gid
;
300 UDF_SB(sb
)->s_umask
= uopt
.umask
;
302 #if CONFIG_UDF_RW != 1
306 if ((*flags
& MS_RDONLY
) == (sb
->s_flags
& MS_RDONLY
))
308 if (*flags
& MS_RDONLY
)
320 * Set the block size to be used in all transfers.
323 * To allow room for a DMA transfer, it is best to guess big when unsure.
324 * This routine picks 2048 bytes as the blocksize when guessing. This
325 * should be adequate until devices with larger block sizes become common.
327 * Note that the Linux kernel can currently only deal with blocksizes of
328 * 512, 1024, 2048, 4096, and 8192 bytes.
331 * sb Pointer to _locked_ superblock.
334 * sb->s_blocksize Blocksize.
335 * sb->s_blocksize_bits log2 of blocksize.
336 * <return> 0 Blocksize is valid.
337 * <return> 1 Blocksize is invalid.
340 * July 1, 1997 - Andrew E. Mileski
341 * Written, tested, and released.
344 udf_set_blocksize(struct super_block
*sb
, int bsize
)
346 /* Use specified block size if specified */
347 if (!(sb
->s_blocksize
= get_hardblocksize(sb
->s_dev
)))
348 sb
->s_blocksize
= 2048;
349 if (bsize
> sb
->s_blocksize
)
350 sb
->s_blocksize
= bsize
;
352 /* Block size must be an even multiple of 512 */
353 switch (sb
->s_blocksize
) {
354 case 512: sb
->s_blocksize_bits
= 9; break;
355 case 1024: sb
->s_blocksize_bits
= 10; break;
356 case 2048: sb
->s_blocksize_bits
= 11; break;
357 case 4096: sb
->s_blocksize_bits
= 12; break;
358 case 8192: sb
->s_blocksize_bits
= 13; break;
361 udf_debug("Bad block size (%ld)\n", sb
->s_blocksize
);
362 printk(KERN_ERR
"udf: bad block size (%ld)\n", sb
->s_blocksize
);
367 /* Set the block size */
368 set_blocksize(sb
->s_dev
, sb
->s_blocksize
);
369 return sb
->s_blocksize
;
373 udf_vrs(struct super_block
*sb
, int silent
)
375 struct VolStructDesc
*vsd
= NULL
;
377 struct buffer_head
*bh
= NULL
;
382 /* Block size must be a multiple of 512 */
383 if (sb
->s_blocksize
& 511)
386 sector
+= (UDF_SB_SESSION(sb
) << sb
->s_blocksize_bits
);
388 udf_debug("Starting at sector %u (%ld byte sectors)\n",
389 (sector
>> sb
->s_blocksize_bits
), sb
->s_blocksize
);
390 /* Process the sequence (if applicable) */
391 for (;!nsr02
&& !nsr03
; sector
+= 2048)
394 bh
= udf_tread(sb
, sector
>> sb
->s_blocksize_bits
, sb
->s_blocksize
);
398 /* Look for ISO descriptors */
399 vsd
= (struct VolStructDesc
*)(bh
->b_data
+
400 (sector
& (sb
->s_blocksize
- 1)));
402 if (vsd
->stdIdent
[0] == 0)
404 udf_release_data(bh
);
407 else if (!strncmp(vsd
->stdIdent
, STD_ID_CD001
, STD_ID_LEN
))
410 switch (vsd
->structType
)
413 udf_debug("ISO9660 Boot Record found\n");
416 udf_debug("ISO9660 Primary Volume Descriptor found\n");
419 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
422 udf_debug("ISO9660 Volume Partition Descriptor found\n");
425 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
428 udf_debug("ISO9660 VRS (%u) found\n", vsd
->structType
);
432 else if (!strncmp(vsd
->stdIdent
, STD_ID_BEA01
, STD_ID_LEN
))
435 else if (!strncmp(vsd
->stdIdent
, STD_ID_TEA01
, STD_ID_LEN
))
437 udf_release_data(bh
);
440 else if (!strncmp(vsd
->stdIdent
, STD_ID_NSR02
, STD_ID_LEN
))
444 else if (!strncmp(vsd
->stdIdent
, STD_ID_NSR03
, STD_ID_LEN
))
448 udf_release_data(bh
);
455 else if (sector
- (UDF_SB_SESSION(sb
) << sb
->s_blocksize_bits
) == 32768)
465 * Find an anchor volume descriptor.
468 * sb Pointer to _locked_ superblock.
469 * lastblock Last block on media.
472 * <return> 1 if not found, 0 if ok
475 * July 1, 1997 - Andrew E. Mileski
476 * Written, tested, and released.
479 udf_find_anchor(struct super_block
*sb
, int useranchor
, int lastblock
)
481 int varlastblock
= udf_variable_to_fixed(lastblock
);
482 int last
[] = { lastblock
, lastblock
- 2,
483 lastblock
- 150, lastblock
- 152,
484 varlastblock
, varlastblock
- 2,
485 varlastblock
- 150, varlastblock
- 152 };
486 struct buffer_head
*bh
= NULL
;
491 UDF_SB_ANCHOR(sb
)[0] = 0;
492 UDF_SB_ANCHOR(sb
)[1] = 0;
493 UDF_SB_ANCHOR(sb
)[2] = 0;
494 UDF_SB_ANCHOR(sb
)[3] = 256 + UDF_SB_SESSION(sb
);
498 /* Search for an anchor volume descriptor pointer */
500 /* according to spec, anchor is in either:
504 * however, if the disc isn't closed, it could be 512 */
506 for (i
=0; (!lastblock
&& i
<sizeof(last
)/sizeof(int)); i
++)
508 if (!(bh
= bread(sb
->s_dev
, last
[i
], sb
->s_blocksize
)))
510 ident
= location
= 0;
514 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
515 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
516 udf_release_data(bh
);
519 if (ident
== TID_ANCHOR_VOL_DESC_PTR
)
521 if (location
== last
[i
] - UDF_SB_SESSION(sb
))
523 lastblock
= UDF_SB_ANCHOR(sb
)[0] = last
[i
];
524 UDF_SB_ANCHOR(sb
)[1] = last
[i
] - 256;
526 else if (location
== udf_variable_to_fixed(last
[i
]) - UDF_SB_SESSION(sb
))
528 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
529 lastblock
= UDF_SB_ANCHOR(sb
)[0] = udf_variable_to_fixed(last
[i
]);
530 UDF_SB_ANCHOR(sb
)[1] = lastblock
- 256;
533 udf_debug("Anchor found at block %d, location mismatch %d.\n",
536 else if (ident
== TID_FILE_ENTRY
|| ident
== TID_EXTENDED_FILE_ENTRY
)
539 UDF_SB_ANCHOR(sb
)[2] = 512 + UDF_SB_SESSION(sb
);
543 if (!(bh
= bread(sb
->s_dev
, last
[i
] - 256, sb
->s_blocksize
)))
545 ident
= location
= 0;
549 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
550 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
551 udf_release_data(bh
);
554 if (ident
== TID_ANCHOR_VOL_DESC_PTR
&&
555 location
== last
[i
] - 256 - UDF_SB_SESSION(sb
))
558 UDF_SB_ANCHOR(sb
)[1] = last
[i
] - 256;
562 if (!(bh
= bread(sb
->s_dev
, last
[i
] - 312 - UDF_SB_SESSION(sb
),
565 ident
= location
= 0;
569 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
570 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
571 udf_release_data(bh
);
574 if (ident
== TID_ANCHOR_VOL_DESC_PTR
&&
575 location
== udf_variable_to_fixed(last
[i
]) - 256)
577 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
578 lastblock
= udf_variable_to_fixed(last
[i
]);
579 UDF_SB_ANCHOR(sb
)[1] = lastblock
- 256;
587 /* We havn't found the lastblock. check 312 */
588 if ((bh
= bread(sb
->s_dev
, 312 + UDF_SB_SESSION(sb
), sb
->s_blocksize
)))
590 ident
= le16_to_cpu(((tag
*)bh
->b_data
)->tagIdent
);
591 location
= le32_to_cpu(((tag
*)bh
->b_data
)->tagLocation
);
592 udf_release_data(bh
);
594 if (ident
== TID_ANCHOR_VOL_DESC_PTR
&& location
== 256)
595 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
599 for (i
=0; i
<sizeof(UDF_SB_ANCHOR(sb
))/sizeof(int); i
++)
601 if (UDF_SB_ANCHOR(sb
)[i
])
603 if (!(bh
= udf_read_tagged(sb
,
604 UDF_SB_ANCHOR(sb
)[i
], UDF_SB_ANCHOR(sb
)[i
], &ident
)))
606 UDF_SB_ANCHOR(sb
)[i
] = 0;
610 udf_release_data(bh
);
611 if ((ident
!= TID_ANCHOR_VOL_DESC_PTR
) && (i
||
612 (ident
!= TID_FILE_ENTRY
&& ident
!= TID_EXTENDED_FILE_ENTRY
)))
614 UDF_SB_ANCHOR(sb
)[i
] = 0;
618 else if (useranchor
!= 0xFFFFFFFF)
620 UDF_SB_ANCHOR(sb
)[i
] = useranchor
;
621 useranchor
= 0xFFFFFFFF;
630 udf_find_fileset(struct super_block
*sb
, lb_addr
*fileset
, lb_addr
*root
)
632 struct buffer_head
*bh
= NULL
;
636 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
637 fileset
->partitionReferenceNum
!= 0xFFFF)
639 bh
= udf_read_ptagged(sb
, *fileset
, 0, &ident
);
643 else if (ident
!= TID_FILE_SET_DESC
)
645 udf_release_data(bh
);
651 if (!bh
) /* Search backwards through the partitions */
657 for (newfileset
.partitionReferenceNum
=UDF_SB_NUMPARTS(sb
)-1;
658 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
659 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
660 fileset
->partitionReferenceNum
== 0xFFFF);
661 newfileset
.partitionReferenceNum
--)
663 lastblock
= UDF_SB_PARTLEN(sb
, newfileset
.partitionReferenceNum
);
664 newfileset
.logicalBlockNum
= 0;
668 bh
= udf_read_ptagged(sb
, newfileset
, 0, &ident
);
671 newfileset
.logicalBlockNum
++;
677 case TID_SPACE_BITMAP_DESC
:
679 struct SpaceBitmapDesc
*sp
;
680 sp
= (struct SpaceBitmapDesc
*)bh
->b_data
;
681 newfileset
.logicalBlockNum
+= 1 +
682 ((le32_to_cpu(sp
->numOfBytes
) + sizeof(struct SpaceBitmapDesc
) - 1)
683 >> sb
->s_blocksize_bits
);
684 udf_release_data(bh
);
687 case TID_FILE_SET_DESC
:
689 *fileset
= newfileset
;
694 newfileset
.logicalBlockNum
++;
695 udf_release_data(bh
);
701 while (newfileset
.logicalBlockNum
< lastblock
&&
702 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
703 fileset
->partitionReferenceNum
== 0xFFFF);
707 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
708 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
)
710 udf_debug("Fileset at block=%d, partition=%d\n",
711 fileset
->logicalBlockNum
, fileset
->partitionReferenceNum
);
713 UDF_SB_PARTITION(sb
) = fileset
->partitionReferenceNum
;
714 udf_load_fileset(sb
, bh
, root
);
715 udf_release_data(bh
);
722 udf_load_pvoldesc(struct super_block
*sb
, struct buffer_head
*bh
)
724 struct PrimaryVolDesc
*pvoldesc
;
730 pvoldesc
= (struct PrimaryVolDesc
*)bh
->b_data
;
732 if ( udf_stamp_to_time(&recording
, &recording_usec
,
733 lets_to_cpu(pvoldesc
->recordingDateAndTime
)) )
736 ts
= lets_to_cpu(pvoldesc
->recordingDateAndTime
);
737 udf_debug("recording time %ld/%ld, %04u/%02u/%02u %02u:%02u (%x)\n",
738 recording
, recording_usec
,
739 ts
.year
, ts
.month
, ts
.day
, ts
.hour
, ts
.minute
, ts
.typeAndTimezone
);
740 UDF_SB_RECORDTIME(sb
) = recording
;
743 if ( !udf_build_ustr(&instr
, pvoldesc
->volIdent
, 32) )
745 if (udf_CS0toUTF8(&outstr
, &instr
))
747 strncpy( UDF_SB_VOLIDENT(sb
), outstr
.u_name
,
748 outstr
.u_len
> 31 ? 31 : outstr
.u_len
);
749 udf_debug("volIdent[] = '%s'\n", UDF_SB_VOLIDENT(sb
));
753 if ( !udf_build_ustr(&instr
, pvoldesc
->volSetIdent
, 128) )
755 if (udf_CS0toUTF8(&outstr
, &instr
))
756 udf_debug("volSetIdent[] = '%s'\n", outstr
.u_name
);
761 udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
, lb_addr
*root
)
763 struct FileSetDesc
*fset
;
765 fset
= (struct FileSetDesc
*)bh
->b_data
;
767 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
769 UDF_SB_SERIALNUM(sb
) = le16_to_cpu(fset
->descTag
.tagSerialNum
);
771 udf_debug("Rootdir at block=%d, partition=%d\n",
772 root
->logicalBlockNum
, root
->partitionReferenceNum
);
776 udf_load_partdesc(struct super_block
*sb
, struct buffer_head
*bh
)
778 struct PartitionDesc
*p
;
781 p
=(struct PartitionDesc
*)bh
->b_data
;
783 for (i
=0; i
<UDF_SB_NUMPARTS(sb
); i
++)
785 udf_debug("Searching map: (%d == %d)\n",
786 UDF_SB_PARTMAPS(sb
)[i
].s_partition_num
, le16_to_cpu(p
->partitionNumber
));
787 if (UDF_SB_PARTMAPS(sb
)[i
].s_partition_num
== le16_to_cpu(p
->partitionNumber
))
789 UDF_SB_PARTLEN(sb
,i
) = le32_to_cpu(p
->partitionLength
); /* blocks */
790 UDF_SB_PARTROOT(sb
,i
) = le32_to_cpu(p
->partitionStartingLocation
) + UDF_SB_SESSION(sb
);
792 if (UDF_SB_PARTTYPE(sb
,i
) == UDF_SPARABLE_MAP15
)
793 udf_fill_spartable(sb
, &UDF_SB_TYPESPAR(sb
,i
), UDF_SB_PARTLEN(sb
,i
));
795 if (!strcmp(p
->partitionContents
.ident
, PARTITION_CONTENTS_NSR02
) ||
796 !strcmp(p
->partitionContents
.ident
, PARTITION_CONTENTS_NSR03
))
798 struct PartitionHeaderDesc
*phd
;
800 phd
= (struct PartitionHeaderDesc
*)(p
->partitionContentsUse
);
801 if (phd
->unallocatedSpaceTable
.extLength
)
802 udf_debug("unallocatedSpaceTable (part %d)\n", i
);
803 if (phd
->unallocatedSpaceBitmap
.extLength
)
805 UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.bitmap
=
806 le32_to_cpu(phd
->unallocatedSpaceBitmap
.extPosition
);
807 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_UNALLOC_BITMAP
;
808 udf_debug("unallocatedSpaceBitmap (part %d) @ %d\n",
809 i
, UDF_SB_PARTMAPS(sb
)[i
].s_uspace
.bitmap
);
811 if (phd
->partitionIntegrityTable
.extLength
)
812 udf_debug("partitionIntegrityTable (part %d)\n", i
);
813 if (phd
->freedSpaceTable
.extLength
)
814 udf_debug("freedSpaceTable (part %d)\n", i
);
815 if (phd
->freedSpaceBitmap
.extLength
)
817 UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.bitmap
=
818 le32_to_cpu(phd
->freedSpaceBitmap
.extPosition
);
819 UDF_SB_PARTFLAGS(sb
,i
) |= UDF_PART_FLAG_FREED_BITMAP
;
820 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
821 i
, UDF_SB_PARTMAPS(sb
)[i
].s_fspace
.bitmap
);
827 if (i
== UDF_SB_NUMPARTS(sb
))
829 udf_debug("Partition (%d) not found in partition map\n", le16_to_cpu(p
->partitionNumber
));
833 udf_debug("Partition (%d:%d type %x) starts at physical %d, block length %d\n",
834 le16_to_cpu(p
->partitionNumber
), i
, UDF_SB_PARTTYPE(sb
,i
),
835 UDF_SB_PARTROOT(sb
,i
), UDF_SB_PARTLEN(sb
,i
));
840 udf_load_logicalvol(struct super_block
*sb
, struct buffer_head
* bh
, lb_addr
*fileset
)
842 struct LogicalVolDesc
*lvd
;
846 lvd
= (struct LogicalVolDesc
*)bh
->b_data
;
848 UDF_SB_NUMPARTS(sb
) = le32_to_cpu(lvd
->numPartitionMaps
);
849 UDF_SB_ALLOC_PARTMAPS(sb
, UDF_SB_NUMPARTS(sb
));
852 i
<UDF_SB_NUMPARTS(sb
) && offset
<le32_to_cpu(lvd
->mapTableLength
);
853 i
++,offset
+=((struct GenericPartitionMap
*)&(lvd
->partitionMaps
[offset
]))->partitionMapLength
)
855 type
= ((struct GenericPartitionMap
*)&(lvd
->partitionMaps
[offset
]))->partitionMapType
;
856 udf_debug("Partition (%d) type %d\n", i
, type
);
859 struct GenericPartitionMap1
*gpm1
= (struct GenericPartitionMap1
*)&(lvd
->partitionMaps
[offset
]);
860 UDF_SB_PARTTYPE(sb
,i
) = UDF_TYPE1_MAP15
;
861 UDF_SB_PARTVSN(sb
,i
) = le16_to_cpu(gpm1
->volSeqNum
);
862 UDF_SB_PARTNUM(sb
,i
) = le16_to_cpu(gpm1
->partitionNum
);
863 UDF_SB_PARTFUNC(sb
,i
) = NULL
;
867 struct UdfPartitionMap2
*upm2
= (struct UdfPartitionMap2
*)&(lvd
->partitionMaps
[offset
]);
868 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
, strlen(UDF_ID_VIRTUAL
)))
870 if (le16_to_cpu(((Uint16
*)upm2
->partIdent
.identSuffix
)[0]) == 0x0150)
872 UDF_SB_PARTTYPE(sb
,i
) = UDF_VIRTUAL_MAP15
;
873 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_virt15
;
875 else if (le16_to_cpu(((Uint16
*)upm2
->partIdent
.identSuffix
)[0]) == 0x0200)
877 UDF_SB_PARTTYPE(sb
,i
) = UDF_VIRTUAL_MAP20
;
878 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_virt20
;
881 else if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_SPARABLE
, strlen(UDF_ID_SPARABLE
)))
885 struct SparablePartitionMap
*spm
= (struct SparablePartitionMap
*)&(lvd
->partitionMaps
[offset
]);
886 UDF_SB_PARTTYPE(sb
,i
) = UDF_SPARABLE_MAP15
;
887 plen
= le16_to_cpu(spm
->packetLength
);
888 UDF_SB_TYPESPAR(sb
,i
).s_spar_pshift
= 0;
890 UDF_SB_TYPESPAR(sb
,i
).s_spar_pshift
++;
891 for (j
=0; j
<spm
->numSparingTables
; j
++)
892 UDF_SB_TYPESPAR(sb
,i
).s_spar_loc
[j
] = le32_to_cpu(spm
->locSparingTable
[j
]);
893 UDF_SB_PARTFUNC(sb
,i
) = udf_get_pblock_spar15
;
897 udf_debug("Unknown ident: %s\n", upm2
->partIdent
.ident
);
900 UDF_SB_PARTVSN(sb
,i
) = le16_to_cpu(upm2
->volSeqNum
);
901 UDF_SB_PARTNUM(sb
,i
) = le16_to_cpu(upm2
->partitionNum
);
907 long_ad
*la
= (long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
909 *fileset
= lelb_to_cpu(la
->extLocation
);
910 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
911 fileset
->logicalBlockNum
,
912 fileset
->partitionReferenceNum
);
914 if (lvd
->integritySeqExt
.extLength
)
915 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
920 * udf_load_logicalvolint
924 udf_load_logicalvolint(struct super_block
*sb
, extent_ad loc
)
926 struct buffer_head
*bh
= NULL
;
929 while ((bh
= udf_read_tagged(sb
, loc
.extLocation
, loc
.extLocation
, &ident
)) &&
930 ident
== TID_LOGICAL_VOL_INTEGRITY_DESC
&& loc
.extLength
> 0)
932 UDF_SB_LVIDBH(sb
) = bh
;
934 if (UDF_SB_LVID(sb
)->nextIntegrityExt
.extLength
)
935 udf_load_logicalvolint(sb
, leea_to_cpu(UDF_SB_LVID(sb
)->nextIntegrityExt
));
937 if (UDF_SB_LVIDBH(sb
) != bh
)
938 udf_release_data(bh
);
939 loc
.extLength
-= sb
->s_blocksize
;
942 if (UDF_SB_LVIDBH(sb
) != bh
)
943 udf_release_data(bh
);
947 * udf_process_sequence
950 * Process a main/reserve volume descriptor sequence.
953 * sb Pointer to _locked_ superblock.
954 * block First block of first extent of the sequence.
955 * lastblock Lastblock of first extent of the sequence.
958 * July 1, 1997 - Andrew E. Mileski
959 * Written, tested, and released.
962 udf_process_sequence(struct super_block
*sb
, long block
, long lastblock
, lb_addr
*fileset
)
964 struct buffer_head
*bh
= NULL
;
965 struct udf_vds_record vds
[VDS_POS_LENGTH
];
966 struct GenericDesc
*gd
;
972 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
974 /* Read the main descriptor sequence */
975 for (;(!done
&& block
<= lastblock
); block
++)
978 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
982 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
983 gd
= (struct GenericDesc
*)bh
->b_data
;
984 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
987 case TID_PRIMARY_VOL_DESC
: /* ISO 13346 3/10.1 */
988 if (vdsn
>= vds
[VDS_POS_PRIMARY_VOL_DESC
].volDescSeqNum
)
990 vds
[VDS_POS_PRIMARY_VOL_DESC
].volDescSeqNum
= vdsn
;
991 vds
[VDS_POS_PRIMARY_VOL_DESC
].block
= block
;
994 case TID_VOL_DESC_PTR
: /* ISO 13346 3/10.3 */
995 if (vdsn
>= vds
[VDS_POS_VOL_DESC_PTR
].volDescSeqNum
)
997 vds
[VDS_POS_VOL_DESC_PTR
].volDescSeqNum
= vdsn
;
998 vds
[VDS_POS_VOL_DESC_PTR
].block
= block
;
1001 case TID_IMP_USE_VOL_DESC
: /* ISO 13346 3/10.4 */
1002 if (vdsn
>= vds
[VDS_POS_IMP_USE_VOL_DESC
].volDescSeqNum
)
1004 vds
[VDS_POS_IMP_USE_VOL_DESC
].volDescSeqNum
= vdsn
;
1005 vds
[VDS_POS_IMP_USE_VOL_DESC
].block
= block
;
1008 case TID_PARTITION_DESC
: /* ISO 13346 3/10.5 */
1009 if (!vds
[VDS_POS_PARTITION_DESC
].block
)
1010 vds
[VDS_POS_PARTITION_DESC
].block
= block
;
1012 case TID_LOGICAL_VOL_DESC
: /* ISO 13346 3/10.6 */
1013 if (vdsn
>= vds
[VDS_POS_LOGICAL_VOL_DESC
].volDescSeqNum
)
1015 vds
[VDS_POS_LOGICAL_VOL_DESC
].volDescSeqNum
= vdsn
;
1016 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
= block
;
1019 case TID_UNALLOC_SPACE_DESC
: /* ISO 13346 3/10.8 */
1020 if (vdsn
>= vds
[VDS_POS_UNALLOC_SPACE_DESC
].volDescSeqNum
)
1022 vds
[VDS_POS_UNALLOC_SPACE_DESC
].volDescSeqNum
= vdsn
;
1023 vds
[VDS_POS_UNALLOC_SPACE_DESC
].block
= block
;
1026 case TID_TERMINATING_DESC
: /* ISO 13346 3/10.9 */
1027 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1031 udf_release_data(bh
);
1033 for (i
=0; i
<VDS_POS_LENGTH
; i
++)
1037 bh
= udf_read_tagged(sb
, vds
[i
].block
, vds
[i
].block
, &ident
);
1039 if (i
== VDS_POS_PRIMARY_VOL_DESC
)
1040 udf_load_pvoldesc(sb
, bh
);
1041 else if (i
== VDS_POS_LOGICAL_VOL_DESC
)
1042 udf_load_logicalvol(sb
, bh
, fileset
);
1043 else if (i
== VDS_POS_PARTITION_DESC
)
1045 struct buffer_head
*bh2
= NULL
;
1046 udf_load_partdesc(sb
, bh
);
1047 for (j
=vds
[i
].block
+1; j
<vds
[VDS_POS_TERMINATING_DESC
].block
; j
++)
1049 bh2
= udf_read_tagged(sb
, j
, j
, &ident
);
1050 gd
= (struct GenericDesc
*)bh2
->b_data
;
1051 if (ident
== TID_PARTITION_DESC
)
1052 udf_load_partdesc(sb
, bh2
);
1053 udf_release_data(bh2
);
1056 udf_release_data(bh
);
1067 udf_check_valid(struct super_block
*sb
, int novrs
, int silent
)
1073 udf_debug("Validity check skipped because of novrs option\n");
1076 /* Check that it is NSR02 compliant */
1077 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
1078 else if ((block
= udf_vrs(sb
, silent
)) == -1)
1080 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1088 udf_load_partition(struct super_block
*sb
, lb_addr
*fileset
)
1090 struct AnchorVolDescPtr
*anchor
;
1092 struct buffer_head
*bh
;
1093 long main_s
, main_e
, reserve_s
, reserve_e
;
1099 for (i
=0; i
<sizeof(UDF_SB_ANCHOR(sb
))/sizeof(int); i
++)
1101 if (UDF_SB_ANCHOR(sb
)[i
] && (bh
= udf_read_tagged(sb
,
1102 UDF_SB_ANCHOR(sb
)[i
], UDF_SB_ANCHOR(sb
)[i
] - UDF_SB_SESSION(sb
), &ident
)))
1104 anchor
= (struct AnchorVolDescPtr
*)bh
->b_data
;
1106 /* Locate the main sequence */
1107 main_s
= le32_to_cpu( anchor
->mainVolDescSeqExt
.extLocation
);
1108 main_e
= le32_to_cpu( anchor
->mainVolDescSeqExt
.extLength
);
1109 main_e
= main_e
>> sb
->s_blocksize_bits
;
1112 /* Locate the reserve sequence */
1113 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1114 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1115 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1116 reserve_e
+= reserve_s
;
1118 udf_release_data(bh
);
1120 /* Process the main & reserve sequences */
1121 /* responsible for finding the PartitionDesc(s) */
1122 if (!(udf_process_sequence(sb
, main_s
, main_e
, fileset
) &&
1123 udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
)))
1130 if (i
== sizeof(UDF_SB_ANCHOR(sb
))/sizeof(int))
1132 udf_debug("No Anchor block found\n");
1136 udf_debug("Using anchor in block %d\n", UDF_SB_ANCHOR(sb
)[i
]);
1138 for (i
=0; i
<UDF_SB_NUMPARTS(sb
); i
++)
1140 switch UDF_SB_PARTTYPE(sb
, i
)
1142 case UDF_VIRTUAL_MAP15
:
1143 case UDF_VIRTUAL_MAP20
:
1147 if (!UDF_SB_LASTBLOCK(sb
))
1149 udf_debug("Unable to determine Lastblock (For Virtual Partition)\n");
1153 for (j
=0; j
<UDF_SB_NUMPARTS(sb
); j
++)
1156 UDF_SB_PARTVSN(sb
,i
) == UDF_SB_PARTVSN(sb
,j
) &&
1157 UDF_SB_PARTNUM(sb
,i
) == UDF_SB_PARTNUM(sb
,j
))
1159 ino
.partitionReferenceNum
= j
;
1160 ino
.logicalBlockNum
= UDF_SB_LASTBLOCK(sb
) -
1161 UDF_SB_PARTROOT(sb
,j
);
1166 if (j
== UDF_SB_NUMPARTS(sb
))
1169 if (!(UDF_SB_VAT(sb
) = udf_iget(sb
, ino
)))
1172 if (UDF_SB_PARTTYPE(sb
,i
) == UDF_VIRTUAL_MAP15
)
1174 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
= udf_ext0_offset(UDF_SB_VAT(sb
));
1175 UDF_SB_TYPEVIRT(sb
,i
).s_num_entries
= (UDF_SB_VAT(sb
)->i_size
- 36) >> 2;
1177 else if (UDF_SB_PARTTYPE(sb
,i
) == UDF_VIRTUAL_MAP20
)
1179 struct buffer_head
*bh
= NULL
;
1182 pos
= udf_block_map(UDF_SB_VAT(sb
), 0);
1183 bh
= bread(sb
->s_dev
, pos
, sb
->s_blocksize
);
1184 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
=
1185 le16_to_cpu(((struct VirtualAllocationTable20
*)bh
->b_data
+ udf_ext0_offset(UDF_SB_VAT(sb
)))->lengthHeader
) +
1186 udf_ext0_offset(UDF_SB_VAT(sb
));
1187 UDF_SB_TYPEVIRT(sb
,i
).s_num_entries
= (UDF_SB_VAT(sb
)->i_size
-
1188 UDF_SB_TYPEVIRT(sb
,i
).s_start_offset
) >> 2;
1189 udf_release_data(bh
);
1191 UDF_SB_PARTROOT(sb
,i
) = udf_get_pblock(sb
, 0, i
, 0);
1192 UDF_SB_PARTLEN(sb
,i
) = UDF_SB_PARTLEN(sb
,ino
.partitionReferenceNum
);
1199 static void udf_open_lvid(struct super_block
*sb
)
1201 if (UDF_SB_LVIDBH(sb
))
1206 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1207 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1208 if (udf_time_to_stamp(&cpu_time
, CURRENT_TIME
, CURRENT_UTIME
))
1209 UDF_SB_LVID(sb
)->recordingDateAndTime
= cpu_to_lets(cpu_time
);
1210 UDF_SB_LVID(sb
)->integrityType
= INTEGRITY_TYPE_OPEN
;
1212 UDF_SB_LVID(sb
)->descTag
.descCRC
=
1213 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb
) + sizeof(tag
),
1214 le16_to_cpu(UDF_SB_LVID(sb
)->descTag
.descCRCLength
), 0));
1216 UDF_SB_LVID(sb
)->descTag
.tagChecksum
= 0;
1217 for (i
=0; i
<16; i
++)
1219 UDF_SB_LVID(sb
)->descTag
.tagChecksum
+=
1220 ((Uint8
*)&(UDF_SB_LVID(sb
)->descTag
))[i
];
1222 mark_buffer_dirty(UDF_SB_LVIDBH(sb
));
1227 static void udf_close_lvid(struct super_block
*sb
)
1229 if (UDF_SB_LVIDBH(sb
) &&
1230 UDF_SB_LVID(sb
)->integrityType
== INTEGRITY_TYPE_OPEN
)
1235 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1236 UDF_SB_LVIDIU(sb
)->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1237 if (udf_time_to_stamp(&cpu_time
, CURRENT_TIME
, CURRENT_UTIME
))
1238 UDF_SB_LVID(sb
)->recordingDateAndTime
= cpu_to_lets(cpu_time
);
1239 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(UDF_SB_LVIDIU(sb
)->maxUDFWriteRev
))
1240 UDF_SB_LVIDIU(sb
)->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
1241 if (UDF_SB_UDFREV(sb
) > le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
))
1242 UDF_SB_LVIDIU(sb
)->minUDFReadRev
= cpu_to_le16(UDF_SB_UDFREV(sb
));
1243 if (UDF_SB_UDFREV(sb
) > le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
))
1244 UDF_SB_LVIDIU(sb
)->minUDFWriteRev
= cpu_to_le16(UDF_SB_UDFREV(sb
));
1245 UDF_SB_LVID(sb
)->integrityType
= INTEGRITY_TYPE_CLOSE
;
1247 UDF_SB_LVID(sb
)->descTag
.descCRC
=
1248 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb
) + sizeof(tag
),
1249 le16_to_cpu(UDF_SB_LVID(sb
)->descTag
.descCRCLength
), 0));
1251 UDF_SB_LVID(sb
)->descTag
.tagChecksum
= 0;
1252 for (i
=0; i
<16; i
++)
1254 UDF_SB_LVID(sb
)->descTag
.tagChecksum
+=
1255 ((Uint8
*)&(UDF_SB_LVID(sb
)->descTag
))[i
];
1257 mark_buffer_dirty(UDF_SB_LVIDBH(sb
));
1265 * Complete the specified super block.
1268 * sb Pointer to superblock to complete - never NULL.
1269 * sb->s_dev Device to read suberblock from.
1270 * options Pointer to mount options.
1271 * silent Silent flag.
1274 * July 1, 1997 - Andrew E. Mileski
1275 * Written, tested, and released.
1277 static struct super_block
*
1278 udf_read_super(struct super_block
*sb
, void *options
, int silent
)
1280 struct inode
*inode
=NULL
;
1281 struct udf_options uopt
;
1282 lb_addr rootdir
, fileset
;
1285 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
);
1290 memset(UDF_SB(sb
), 0x00, sizeof(struct udf_sb_info
));
1292 #if CONFIG_UDF_RW != 1
1293 sb
->s_flags
|= MS_RDONLY
;
1296 if (!udf_parse_options((char *)options
, &uopt
))
1299 fileset
.logicalBlockNum
= 0xFFFFFFFF;
1300 fileset
.partitionReferenceNum
= 0xFFFF;
1302 UDF_SB(sb
)->s_flags
= uopt
.flags
;
1303 UDF_SB(sb
)->s_uid
= uopt
.uid
;
1304 UDF_SB(sb
)->s_gid
= uopt
.gid
;
1305 UDF_SB(sb
)->s_umask
= uopt
.umask
;
1307 /* Set the block size for all transfers */
1308 if (!udf_set_blocksize(sb
, uopt
.blocksize
))
1311 if ( uopt
.session
== 0xFFFFFFFF )
1312 UDF_SB_SESSION(sb
) = udf_get_last_session(sb
);
1314 UDF_SB_SESSION(sb
) = uopt
.session
;
1316 udf_debug("Multi-session=%d\n", UDF_SB_SESSION(sb
));
1318 if ( uopt
.lastblock
== 0xFFFFFFFF )
1319 UDF_SB_LASTBLOCK(sb
) = udf_get_last_block(sb
);
1321 UDF_SB_LASTBLOCK(sb
) = uopt
.lastblock
;
1323 UDF_SB_LASTBLOCK(sb
) = udf_find_anchor(sb
, uopt
.anchor
, UDF_SB_LASTBLOCK(sb
));
1325 udf_debug("Lastblock=%d\n", UDF_SB_LASTBLOCK(sb
));
1327 if (udf_check_valid(sb
, uopt
.novrs
, silent
)) /* read volume recognition sequences */
1329 printk("UDF-fs: No VRS found\n");
1333 /* Fill in the rest of the superblock */
1334 sb
->s_op
= &udf_sb_ops
;
1337 sb
->s_magic
= UDF_SUPER_MAGIC
;
1339 for (i
=0; i
<UDF_MAX_BLOCK_LOADED
; i
++)
1341 UDF_SB_BLOCK_BITMAP_NUMBER(sb
,i
) = 0;
1342 UDF_SB_BLOCK_BITMAP(sb
,i
) = NULL
;
1344 UDF_SB_LOADED_BLOCK_BITMAPS(sb
) = 0;
1346 if (udf_load_partition(sb
, &fileset
))
1348 printk("UDF-fs: No partition found (1)\n");
1352 if ( UDF_SB_LVIDBH(sb
) )
1354 Uint16 minUDFReadRev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFReadRev
);
1355 Uint16 minUDFWriteRev
= le16_to_cpu(UDF_SB_LVIDIU(sb
)->minUDFWriteRev
);
1356 /* Uint16 maxUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev); */
1358 if (minUDFReadRev
> UDF_MAX_READ_VERSION
)
1360 printk("UDF-fs: minUDFReadRev=%x (max is %x)\n",
1361 UDF_SB_LVIDIU(sb
)->minUDFReadRev
, UDF_MAX_READ_VERSION
);
1364 else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
)
1366 sb
->s_flags
|= MS_RDONLY
;
1369 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
1370 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
1371 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
1372 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
1375 if ( !UDF_SB_NUMPARTS(sb
) )
1377 printk("UDF-fs: No partition found (2)\n");
1381 if ( udf_find_fileset(sb
, &fileset
, &rootdir
) )
1383 printk("UDF-fs: No fileset found\n");
1390 udf_time_to_stamp(&ts
, UDF_SB_RECORDTIME(sb
), 0);
1391 udf_info("UDF %s (%s) Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
1392 UDFFS_VERSION
, UDFFS_DATE
,
1393 UDF_SB_VOLIDENT(sb
), ts
.year
, ts
.month
, ts
.day
, ts
.hour
, ts
.minute
,
1394 ts
.typeAndTimezone
);
1396 if (!(sb
->s_flags
& MS_RDONLY
))
1399 /* Assign the root inode */
1400 /* assign inodes by physical block number */
1401 /* perhaps it's not extensible enough, but for now ... */
1402 inode
= udf_iget(sb
, rootdir
);
1405 printk("UDF-fs: Error in udf_iget, block=%d, partition=%d\n",
1406 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
1410 /* Allocate a dentry for the root inode */
1411 sb
->s_root
= d_alloc_root(inode
);
1414 printk("UDF-fs: Couldn't allocate root dentry\n");
1423 iput(UDF_SB_VAT(sb
));
1424 if (!(sb
->s_flags
& MS_RDONLY
))
1426 udf_release_data(UDF_SB_LVIDBH(sb
));
1431 void udf_error(struct super_block
*sb
, const char *function
,
1432 const char *fmt
, ...)
1436 if (!(sb
->s_flags
& MS_RDONLY
))
1441 va_start(args
, fmt
);
1442 vsprintf(error_buf
, fmt
, args
);
1444 printk (KERN_CRIT
"UDF-fs error (device %s): %s: %s\n",
1445 bdevname(sb
->s_dev
), function
, error_buf
);
1448 void udf_warning(struct super_block
*sb
, const char *function
,
1449 const char *fmt
, ...)
1453 va_start (args
, fmt
);
1454 vsprintf(error_buf
, fmt
, args
);
1456 printk(KERN_WARNING
"UDF-fs warning (device %s): %s: %s\n",
1457 bdevname(sb
->s_dev
), function
, error_buf
);
1464 * Prepare for destruction of the superblock.
1467 * Called before the filesystem is unmounted.
1470 * July 1, 1997 - Andrew E. Mileski
1471 * Written, tested, and released.
1474 udf_put_super(struct super_block
*sb
)
1479 iput(UDF_SB_VAT(sb
));
1480 if (!(sb
->s_flags
& MS_RDONLY
))
1482 udf_release_data(UDF_SB_LVIDBH(sb
));
1483 for (i
=0; i
<UDF_MAX_BLOCK_LOADED
; i
++)
1484 udf_release_data(UDF_SB_BLOCK_BITMAP(sb
, i
));
1492 * Return info about the filesystem.
1495 * Called by sys_statfs()
1498 * July 1, 1997 - Andrew E. Mileski
1499 * Written, tested, and released.
1502 udf_statfs(struct super_block
*sb
, struct statfs
*buf
)
1504 buf
->f_type
= UDF_SUPER_MAGIC
;
1505 buf
->f_bsize
= sb
->s_blocksize
;
1506 buf
->f_blocks
= UDF_SB_PARTLEN(sb
, UDF_SB_PARTITION(sb
));
1507 buf
->f_bfree
= udf_count_free(sb
);
1508 buf
->f_bavail
= buf
->f_bfree
;
1509 buf
->f_files
= (UDF_SB_LVIDBH(sb
) ?
1510 (le32_to_cpu(UDF_SB_LVIDIU(sb
)->numFiles
) +
1511 le32_to_cpu(UDF_SB_LVIDIU(sb
)->numDirs
)) : 0) + buf
->f_bfree
;
1512 buf
->f_ffree
= buf
->f_bfree
;
1513 /* __kernel_fsid_t f_fsid */
1514 buf
->f_namelen
= UDF_NAME_LEN
;
1519 static unsigned char udf_bitmap_lookup
[16] = {
1520 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
1524 udf_count_free(struct super_block
*sb
)
1526 struct buffer_head
*bh
= NULL
;
1527 unsigned int accum
= 0;
1531 if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_UNALLOC_BITMAP
)
1532 bitmap
= UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_uspace
.bitmap
;
1533 else if (UDF_SB_PARTFLAGS(sb
,UDF_SB_PARTITION(sb
)) & UDF_PART_FLAG_FREED_BITMAP
)
1534 bitmap
= UDF_SB_PARTMAPS(sb
)[UDF_SB_PARTITION(sb
)].s_fspace
.bitmap
;
1536 bitmap
= 0xFFFFFFFF;
1538 if (bitmap
!= 0xFFFFFFFF)
1540 struct SpaceBitmapDesc
*bm
;
1541 int block
= 0, newblock
, index
;
1547 loc
.logicalBlockNum
= bitmap
;
1548 loc
.partitionReferenceNum
= UDF_SB_PARTITION(sb
);
1549 bh
= udf_read_ptagged(sb
, loc
, 0, &ident
);
1553 printk(KERN_ERR
"udf: udf_count_free failed\n");
1556 else if (ident
!= TID_SPACE_BITMAP_DESC
)
1558 udf_release_data(bh
);
1559 printk(KERN_ERR
"udf: udf_count_free failed\n");
1563 bm
= (struct SpaceBitmapDesc
*)bh
->b_data
;
1564 bytes
= bm
->numOfBytes
;
1565 index
= sizeof(struct SpaceBitmapDesc
); /* offset in first block only */
1566 ptr
= (Uint8
*)bh
->b_data
;
1570 while ((bytes
> 0) && (index
< sb
->s_blocksize
))
1573 accum
+= udf_bitmap_lookup
[ value
& 0x0f ];
1574 accum
+= udf_bitmap_lookup
[ value
>> 4 ];
1580 udf_release_data(bh
);
1581 newblock
= udf_get_lb_pblock(sb
, loc
, ++block
);
1582 bh
= udf_tread(sb
, newblock
, sb
->s_blocksize
);
1585 udf_debug("read failed\n");
1589 ptr
= (Uint8
*)bh
->b_data
;
1592 udf_release_data(bh
);
1596 if (UDF_SB_LVIDBH(sb
))
1598 if (le32_to_cpu(UDF_SB_LVID(sb
)->numOfPartitions
) > UDF_SB_PARTITION(sb
))
1599 accum
= le32_to_cpu(UDF_SB_LVID(sb
)->freeSpaceTable
[UDF_SB_PARTITION(sb
)]);
1601 if (accum
== 0xFFFFFFFF)