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
37 * vol descs. 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 <linux/errno.h>
56 #include <linux/mount.h>
57 #include <linux/seq_file.h>
58 #include <linux/bitmap.h>
59 #include <linux/crc-itu-t.h>
60 #include <asm/byteorder.h>
65 #include <linux/init.h>
66 #include <asm/uaccess.h>
68 #define VDS_POS_PRIMARY_VOL_DESC 0
69 #define VDS_POS_UNALLOC_SPACE_DESC 1
70 #define VDS_POS_LOGICAL_VOL_DESC 2
71 #define VDS_POS_PARTITION_DESC 3
72 #define VDS_POS_IMP_USE_VOL_DESC 4
73 #define VDS_POS_VOL_DESC_PTR 5
74 #define VDS_POS_TERMINATING_DESC 6
75 #define VDS_POS_LENGTH 7
77 #define UDF_DEFAULT_BLOCKSIZE 2048
79 static char error_buf
[1024];
81 /* These are the "meat" - everything else is stuffing */
82 static int udf_fill_super(struct super_block
*, void *, int);
83 static void udf_put_super(struct super_block
*);
84 static int udf_sync_fs(struct super_block
*, int);
85 static int udf_remount_fs(struct super_block
*, int *, char *);
86 static void udf_load_logicalvolint(struct super_block
*, struct kernel_extent_ad
);
87 static int udf_find_fileset(struct super_block
*, struct kernel_lb_addr
*,
88 struct kernel_lb_addr
*);
89 static void udf_load_fileset(struct super_block
*, struct buffer_head
*,
90 struct kernel_lb_addr
*);
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 dentry
*, struct kstatfs
*);
95 static int udf_show_options(struct seq_file
*, struct vfsmount
*);
96 static void udf_error(struct super_block
*sb
, const char *function
,
97 const char *fmt
, ...);
99 struct logicalVolIntegrityDescImpUse
*udf_sb_lvidiu(struct udf_sb_info
*sbi
)
101 struct logicalVolIntegrityDesc
*lvid
=
102 (struct logicalVolIntegrityDesc
*)sbi
->s_lvid_bh
->b_data
;
103 __u32 number_of_partitions
= le32_to_cpu(lvid
->numOfPartitions
);
104 __u32 offset
= number_of_partitions
* 2 *
105 sizeof(uint32_t)/sizeof(uint8_t);
106 return (struct logicalVolIntegrityDescImpUse
*)&(lvid
->impUse
[offset
]);
109 /* UDF filesystem type */
110 static int udf_get_sb(struct file_system_type
*fs_type
,
111 int flags
, const char *dev_name
, void *data
,
112 struct vfsmount
*mnt
)
114 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, udf_fill_super
, mnt
);
117 static struct file_system_type udf_fstype
= {
118 .owner
= THIS_MODULE
,
120 .get_sb
= udf_get_sb
,
121 .kill_sb
= kill_block_super
,
122 .fs_flags
= FS_REQUIRES_DEV
,
125 static struct kmem_cache
*udf_inode_cachep
;
127 static struct inode
*udf_alloc_inode(struct super_block
*sb
)
129 struct udf_inode_info
*ei
;
130 ei
= kmem_cache_alloc(udf_inode_cachep
, GFP_KERNEL
);
135 ei
->i_lenExtents
= 0;
136 ei
->i_next_alloc_block
= 0;
137 ei
->i_next_alloc_goal
= 0;
140 return &ei
->vfs_inode
;
143 static void udf_destroy_inode(struct inode
*inode
)
145 kmem_cache_free(udf_inode_cachep
, UDF_I(inode
));
148 static void init_once(void *foo
)
150 struct udf_inode_info
*ei
= (struct udf_inode_info
*)foo
;
152 ei
->i_ext
.i_data
= NULL
;
153 inode_init_once(&ei
->vfs_inode
);
156 static int init_inodecache(void)
158 udf_inode_cachep
= kmem_cache_create("udf_inode_cache",
159 sizeof(struct udf_inode_info
),
160 0, (SLAB_RECLAIM_ACCOUNT
|
163 if (!udf_inode_cachep
)
168 static void destroy_inodecache(void)
170 kmem_cache_destroy(udf_inode_cachep
);
173 /* Superblock operations */
174 static const struct super_operations udf_sb_ops
= {
175 .alloc_inode
= udf_alloc_inode
,
176 .destroy_inode
= udf_destroy_inode
,
177 .write_inode
= udf_write_inode
,
178 .delete_inode
= udf_delete_inode
,
179 .clear_inode
= udf_clear_inode
,
180 .put_super
= udf_put_super
,
181 .sync_fs
= udf_sync_fs
,
182 .statfs
= udf_statfs
,
183 .remount_fs
= udf_remount_fs
,
184 .show_options
= udf_show_options
,
189 unsigned int blocksize
;
190 unsigned int session
;
191 unsigned int lastblock
;
194 unsigned short partition
;
195 unsigned int fileset
;
196 unsigned int rootdir
;
203 struct nls_table
*nls_map
;
206 static int __init
init_udf_fs(void)
210 err
= init_inodecache();
213 err
= register_filesystem(&udf_fstype
);
220 destroy_inodecache();
226 static void __exit
exit_udf_fs(void)
228 unregister_filesystem(&udf_fstype
);
229 destroy_inodecache();
232 module_init(init_udf_fs
)
233 module_exit(exit_udf_fs
)
235 static int udf_sb_alloc_partition_maps(struct super_block
*sb
, u32 count
)
237 struct udf_sb_info
*sbi
= UDF_SB(sb
);
239 sbi
->s_partmaps
= kcalloc(count
, sizeof(struct udf_part_map
),
241 if (!sbi
->s_partmaps
) {
242 udf_error(sb
, __func__
,
243 "Unable to allocate space for %d partition maps",
245 sbi
->s_partitions
= 0;
249 sbi
->s_partitions
= count
;
253 static int udf_show_options(struct seq_file
*seq
, struct vfsmount
*mnt
)
255 struct super_block
*sb
= mnt
->mnt_sb
;
256 struct udf_sb_info
*sbi
= UDF_SB(sb
);
258 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_STRICT
))
259 seq_puts(seq
, ",nostrict");
260 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_BLOCKSIZE_SET
))
261 seq_printf(seq
, ",bs=%lu", sb
->s_blocksize
);
262 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNHIDE
))
263 seq_puts(seq
, ",unhide");
264 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNDELETE
))
265 seq_puts(seq
, ",undelete");
266 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_AD_IN_ICB
))
267 seq_puts(seq
, ",noadinicb");
268 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_SHORT_AD
))
269 seq_puts(seq
, ",shortad");
270 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_FORGET
))
271 seq_puts(seq
, ",uid=forget");
272 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_IGNORE
))
273 seq_puts(seq
, ",uid=ignore");
274 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_FORGET
))
275 seq_puts(seq
, ",gid=forget");
276 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_IGNORE
))
277 seq_puts(seq
, ",gid=ignore");
278 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_SET
))
279 seq_printf(seq
, ",uid=%u", sbi
->s_uid
);
280 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_SET
))
281 seq_printf(seq
, ",gid=%u", sbi
->s_gid
);
282 if (sbi
->s_umask
!= 0)
283 seq_printf(seq
, ",umask=%o", sbi
->s_umask
);
284 if (sbi
->s_fmode
!= UDF_INVALID_MODE
)
285 seq_printf(seq
, ",mode=%o", sbi
->s_fmode
);
286 if (sbi
->s_dmode
!= UDF_INVALID_MODE
)
287 seq_printf(seq
, ",dmode=%o", sbi
->s_dmode
);
288 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_SESSION_SET
))
289 seq_printf(seq
, ",session=%u", sbi
->s_session
);
290 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_LASTBLOCK_SET
))
291 seq_printf(seq
, ",lastblock=%u", sbi
->s_last_block
);
292 if (sbi
->s_anchor
!= 0)
293 seq_printf(seq
, ",anchor=%u", sbi
->s_anchor
);
295 * volume, partition, fileset and rootdir seem to be ignored
298 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UTF8
))
299 seq_puts(seq
, ",utf8");
300 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
) && sbi
->s_nls_map
)
301 seq_printf(seq
, ",iocharset=%s", sbi
->s_nls_map
->charset
);
310 * Parse mount options.
313 * The following mount options are supported:
315 * gid= Set the default group.
316 * umask= Set the default umask.
317 * mode= Set the default file permissions.
318 * dmode= Set the default directory permissions.
319 * uid= Set the default user.
320 * bs= Set the block size.
321 * unhide Show otherwise hidden files.
322 * undelete Show deleted files in lists.
323 * adinicb Embed data in the inode (default)
324 * noadinicb Don't embed data in the inode
325 * shortad Use short ad's
326 * longad Use long ad's (default)
327 * nostrict Unset strict conformance
328 * iocharset= Set the NLS character set
330 * The remaining are for debugging and disaster recovery:
332 * novrs Skip volume sequence recognition
334 * The following expect a offset from 0.
336 * session= Set the CDROM session (default= last session)
337 * anchor= Override standard anchor location. (default= 256)
338 * volume= Override the VolumeDesc location. (unused)
339 * partition= Override the PartitionDesc location. (unused)
340 * lastblock= Set the last block of the filesystem/
342 * The following expect a offset from the partition root.
344 * fileset= Override the fileset block location. (unused)
345 * rootdir= Override the root directory location. (unused)
346 * WARNING: overriding the rootdir to a non-directory may
347 * yield highly unpredictable results.
350 * options Pointer to mount options string.
351 * uopts Pointer to mount options variable.
354 * <return> 1 Mount options parsed okay.
355 * <return> 0 Error parsing mount options.
358 * July 1, 1997 - Andrew E. Mileski
359 * Written, tested, and released.
363 Opt_novrs
, Opt_nostrict
, Opt_bs
, Opt_unhide
, Opt_undelete
,
364 Opt_noadinicb
, Opt_adinicb
, Opt_shortad
, Opt_longad
,
365 Opt_gid
, Opt_uid
, Opt_umask
, Opt_session
, Opt_lastblock
,
366 Opt_anchor
, Opt_volume
, Opt_partition
, Opt_fileset
,
367 Opt_rootdir
, Opt_utf8
, Opt_iocharset
,
368 Opt_err
, Opt_uforget
, Opt_uignore
, Opt_gforget
, Opt_gignore
,
372 static const match_table_t tokens
= {
373 {Opt_novrs
, "novrs"},
374 {Opt_nostrict
, "nostrict"},
376 {Opt_unhide
, "unhide"},
377 {Opt_undelete
, "undelete"},
378 {Opt_noadinicb
, "noadinicb"},
379 {Opt_adinicb
, "adinicb"},
380 {Opt_shortad
, "shortad"},
381 {Opt_longad
, "longad"},
382 {Opt_uforget
, "uid=forget"},
383 {Opt_uignore
, "uid=ignore"},
384 {Opt_gforget
, "gid=forget"},
385 {Opt_gignore
, "gid=ignore"},
388 {Opt_umask
, "umask=%o"},
389 {Opt_session
, "session=%u"},
390 {Opt_lastblock
, "lastblock=%u"},
391 {Opt_anchor
, "anchor=%u"},
392 {Opt_volume
, "volume=%u"},
393 {Opt_partition
, "partition=%u"},
394 {Opt_fileset
, "fileset=%u"},
395 {Opt_rootdir
, "rootdir=%u"},
397 {Opt_iocharset
, "iocharset=%s"},
398 {Opt_fmode
, "mode=%o"},
399 {Opt_dmode
, "dmode=%o"},
403 static int udf_parse_options(char *options
, struct udf_options
*uopt
,
410 uopt
->partition
= 0xFFFF;
411 uopt
->session
= 0xFFFFFFFF;
414 uopt
->volume
= 0xFFFFFFFF;
415 uopt
->rootdir
= 0xFFFFFFFF;
416 uopt
->fileset
= 0xFFFFFFFF;
417 uopt
->nls_map
= NULL
;
422 while ((p
= strsep(&options
, ",")) != NULL
) {
423 substring_t args
[MAX_OPT_ARGS
];
428 token
= match_token(p
, tokens
, args
);
434 if (match_int(&args
[0], &option
))
436 uopt
->blocksize
= option
;
437 uopt
->flags
|= (1 << UDF_FLAG_BLOCKSIZE_SET
);
440 uopt
->flags
|= (1 << UDF_FLAG_UNHIDE
);
443 uopt
->flags
|= (1 << UDF_FLAG_UNDELETE
);
446 uopt
->flags
&= ~(1 << UDF_FLAG_USE_AD_IN_ICB
);
449 uopt
->flags
|= (1 << UDF_FLAG_USE_AD_IN_ICB
);
452 uopt
->flags
|= (1 << UDF_FLAG_USE_SHORT_AD
);
455 uopt
->flags
&= ~(1 << UDF_FLAG_USE_SHORT_AD
);
458 if (match_int(args
, &option
))
461 uopt
->flags
|= (1 << UDF_FLAG_GID_SET
);
464 if (match_int(args
, &option
))
467 uopt
->flags
|= (1 << UDF_FLAG_UID_SET
);
470 if (match_octal(args
, &option
))
472 uopt
->umask
= option
;
475 uopt
->flags
&= ~(1 << UDF_FLAG_STRICT
);
478 if (match_int(args
, &option
))
480 uopt
->session
= option
;
482 uopt
->flags
|= (1 << UDF_FLAG_SESSION_SET
);
485 if (match_int(args
, &option
))
487 uopt
->lastblock
= option
;
489 uopt
->flags
|= (1 << UDF_FLAG_LASTBLOCK_SET
);
492 if (match_int(args
, &option
))
494 uopt
->anchor
= option
;
497 if (match_int(args
, &option
))
499 uopt
->volume
= option
;
502 if (match_int(args
, &option
))
504 uopt
->partition
= option
;
507 if (match_int(args
, &option
))
509 uopt
->fileset
= option
;
512 if (match_int(args
, &option
))
514 uopt
->rootdir
= option
;
517 uopt
->flags
|= (1 << UDF_FLAG_UTF8
);
519 #ifdef CONFIG_UDF_NLS
521 uopt
->nls_map
= load_nls(args
[0].from
);
522 uopt
->flags
|= (1 << UDF_FLAG_NLS_MAP
);
526 uopt
->flags
|= (1 << UDF_FLAG_UID_IGNORE
);
529 uopt
->flags
|= (1 << UDF_FLAG_UID_FORGET
);
532 uopt
->flags
|= (1 << UDF_FLAG_GID_IGNORE
);
535 uopt
->flags
|= (1 << UDF_FLAG_GID_FORGET
);
538 if (match_octal(args
, &option
))
540 uopt
->fmode
= option
& 0777;
543 if (match_octal(args
, &option
))
545 uopt
->dmode
= option
& 0777;
548 printk(KERN_ERR
"udf: bad mount option \"%s\" "
549 "or missing value\n", p
);
556 static int udf_remount_fs(struct super_block
*sb
, int *flags
, char *options
)
558 struct udf_options uopt
;
559 struct udf_sb_info
*sbi
= UDF_SB(sb
);
561 uopt
.flags
= sbi
->s_flags
;
562 uopt
.uid
= sbi
->s_uid
;
563 uopt
.gid
= sbi
->s_gid
;
564 uopt
.umask
= sbi
->s_umask
;
565 uopt
.fmode
= sbi
->s_fmode
;
566 uopt
.dmode
= sbi
->s_dmode
;
568 if (!udf_parse_options(options
, &uopt
, true))
571 sbi
->s_flags
= uopt
.flags
;
572 sbi
->s_uid
= uopt
.uid
;
573 sbi
->s_gid
= uopt
.gid
;
574 sbi
->s_umask
= uopt
.umask
;
575 sbi
->s_fmode
= uopt
.fmode
;
576 sbi
->s_dmode
= uopt
.dmode
;
578 if (sbi
->s_lvid_bh
) {
579 int write_rev
= le16_to_cpu(udf_sb_lvidiu(sbi
)->minUDFWriteRev
);
580 if (write_rev
> UDF_MAX_WRITE_VERSION
)
584 if ((*flags
& MS_RDONLY
) == (sb
->s_flags
& MS_RDONLY
))
586 if (*flags
& MS_RDONLY
)
594 /* Check Volume Structure Descriptors (ECMA 167 2/9.1) */
595 /* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
596 static loff_t
udf_check_vsd(struct super_block
*sb
)
598 struct volStructDesc
*vsd
= NULL
;
599 loff_t sector
= 32768;
601 struct buffer_head
*bh
= NULL
;
604 struct udf_sb_info
*sbi
;
607 if (sb
->s_blocksize
< sizeof(struct volStructDesc
))
608 sectorsize
= sizeof(struct volStructDesc
);
610 sectorsize
= sb
->s_blocksize
;
612 sector
+= (sbi
->s_session
<< sb
->s_blocksize_bits
);
614 udf_debug("Starting at sector %u (%ld byte sectors)\n",
615 (unsigned int)(sector
>> sb
->s_blocksize_bits
),
617 /* Process the sequence (if applicable) */
618 for (; !nsr02
&& !nsr03
; sector
+= sectorsize
) {
620 bh
= udf_tread(sb
, sector
>> sb
->s_blocksize_bits
);
624 /* Look for ISO descriptors */
625 vsd
= (struct volStructDesc
*)(bh
->b_data
+
626 (sector
& (sb
->s_blocksize
- 1)));
628 if (vsd
->stdIdent
[0] == 0) {
631 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_CD001
,
633 switch (vsd
->structType
) {
635 udf_debug("ISO9660 Boot Record found\n");
638 udf_debug("ISO9660 Primary Volume Descriptor "
642 udf_debug("ISO9660 Supplementary Volume "
643 "Descriptor found\n");
646 udf_debug("ISO9660 Volume Partition Descriptor "
650 udf_debug("ISO9660 Volume Descriptor Set "
651 "Terminator found\n");
654 udf_debug("ISO9660 VRS (%u) found\n",
658 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_BEA01
,
661 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_TEA01
,
665 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR02
,
668 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR03
,
678 else if (sector
- (sbi
->s_session
<< sb
->s_blocksize_bits
) == 32768)
684 static int udf_find_fileset(struct super_block
*sb
,
685 struct kernel_lb_addr
*fileset
,
686 struct kernel_lb_addr
*root
)
688 struct buffer_head
*bh
= NULL
;
691 struct udf_sb_info
*sbi
;
693 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
694 fileset
->partitionReferenceNum
!= 0xFFFF) {
695 bh
= udf_read_ptagged(sb
, fileset
, 0, &ident
);
699 } else if (ident
!= TAG_IDENT_FSD
) {
708 /* Search backwards through the partitions */
709 struct kernel_lb_addr newfileset
;
711 /* --> cvg: FIXME - is it reasonable? */
714 for (newfileset
.partitionReferenceNum
= sbi
->s_partitions
- 1;
715 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
716 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
717 fileset
->partitionReferenceNum
== 0xFFFF);
718 newfileset
.partitionReferenceNum
--) {
719 lastblock
= sbi
->s_partmaps
720 [newfileset
.partitionReferenceNum
]
722 newfileset
.logicalBlockNum
= 0;
725 bh
= udf_read_ptagged(sb
, &newfileset
, 0,
728 newfileset
.logicalBlockNum
++;
735 struct spaceBitmapDesc
*sp
;
736 sp
= (struct spaceBitmapDesc
*)
738 newfileset
.logicalBlockNum
+= 1 +
739 ((le32_to_cpu(sp
->numOfBytes
) +
740 sizeof(struct spaceBitmapDesc
)
741 - 1) >> sb
->s_blocksize_bits
);
746 *fileset
= newfileset
;
749 newfileset
.logicalBlockNum
++;
754 } while (newfileset
.logicalBlockNum
< lastblock
&&
755 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
756 fileset
->partitionReferenceNum
== 0xFFFF);
760 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
761 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
) {
762 udf_debug("Fileset at block=%d, partition=%d\n",
763 fileset
->logicalBlockNum
,
764 fileset
->partitionReferenceNum
);
766 sbi
->s_partition
= fileset
->partitionReferenceNum
;
767 udf_load_fileset(sb
, bh
, root
);
774 static int udf_load_pvoldesc(struct super_block
*sb
, sector_t block
)
776 struct primaryVolDesc
*pvoldesc
;
777 struct ustr
*instr
, *outstr
;
778 struct buffer_head
*bh
;
782 instr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
786 outstr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
790 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
794 BUG_ON(ident
!= TAG_IDENT_PVD
);
796 pvoldesc
= (struct primaryVolDesc
*)bh
->b_data
;
798 if (udf_disk_stamp_to_time(&UDF_SB(sb
)->s_record_time
,
799 pvoldesc
->recordingDateAndTime
)) {
801 struct timestamp
*ts
= &pvoldesc
->recordingDateAndTime
;
802 udf_debug("recording time %04u/%02u/%02u"
804 le16_to_cpu(ts
->year
), ts
->month
, ts
->day
, ts
->hour
,
805 ts
->minute
, le16_to_cpu(ts
->typeAndTimezone
));
809 if (!udf_build_ustr(instr
, pvoldesc
->volIdent
, 32))
810 if (udf_CS0toUTF8(outstr
, instr
)) {
811 strncpy(UDF_SB(sb
)->s_volume_ident
, outstr
->u_name
,
812 outstr
->u_len
> 31 ? 31 : outstr
->u_len
);
813 udf_debug("volIdent[] = '%s'\n",
814 UDF_SB(sb
)->s_volume_ident
);
817 if (!udf_build_ustr(instr
, pvoldesc
->volSetIdent
, 128))
818 if (udf_CS0toUTF8(outstr
, instr
))
819 udf_debug("volSetIdent[] = '%s'\n", outstr
->u_name
);
830 static int udf_load_metadata_files(struct super_block
*sb
, int partition
)
832 struct udf_sb_info
*sbi
= UDF_SB(sb
);
833 struct udf_part_map
*map
;
834 struct udf_meta_data
*mdata
;
835 struct kernel_lb_addr addr
;
838 map
= &sbi
->s_partmaps
[partition
];
839 mdata
= &map
->s_type_specific
.s_metadata
;
841 /* metadata address */
842 addr
.logicalBlockNum
= mdata
->s_meta_file_loc
;
843 addr
.partitionReferenceNum
= map
->s_partition_num
;
845 udf_debug("Metadata file location: block = %d part = %d\n",
846 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
848 mdata
->s_metadata_fe
= udf_iget(sb
, &addr
);
850 if (mdata
->s_metadata_fe
== NULL
) {
851 udf_warning(sb
, __func__
, "metadata inode efe not found, "
852 "will try mirror inode.");
854 } else if (UDF_I(mdata
->s_metadata_fe
)->i_alloc_type
!=
855 ICBTAG_FLAG_AD_SHORT
) {
856 udf_warning(sb
, __func__
, "metadata inode efe does not have "
857 "short allocation descriptors!");
859 iput(mdata
->s_metadata_fe
);
860 mdata
->s_metadata_fe
= NULL
;
863 /* mirror file entry */
864 addr
.logicalBlockNum
= mdata
->s_mirror_file_loc
;
865 addr
.partitionReferenceNum
= map
->s_partition_num
;
867 udf_debug("Mirror metadata file location: block = %d part = %d\n",
868 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
870 mdata
->s_mirror_fe
= udf_iget(sb
, &addr
);
872 if (mdata
->s_mirror_fe
== NULL
) {
874 udf_error(sb
, __func__
, "mirror inode efe not found "
875 "and metadata inode is missing too, exiting...");
878 udf_warning(sb
, __func__
, "mirror inode efe not found,"
879 " but metadata inode is OK");
880 } else if (UDF_I(mdata
->s_mirror_fe
)->i_alloc_type
!=
881 ICBTAG_FLAG_AD_SHORT
) {
882 udf_warning(sb
, __func__
, "mirror inode efe does not have "
883 "short allocation descriptors!");
884 iput(mdata
->s_mirror_fe
);
885 mdata
->s_mirror_fe
= NULL
;
893 * Load only if bitmap file location differs from 0xFFFFFFFF (DCN-5102)
895 if (mdata
->s_bitmap_file_loc
!= 0xFFFFFFFF) {
896 addr
.logicalBlockNum
= mdata
->s_bitmap_file_loc
;
897 addr
.partitionReferenceNum
= map
->s_partition_num
;
899 udf_debug("Bitmap file location: block = %d part = %d\n",
900 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
902 mdata
->s_bitmap_fe
= udf_iget(sb
, &addr
);
904 if (mdata
->s_bitmap_fe
== NULL
) {
905 if (sb
->s_flags
& MS_RDONLY
)
906 udf_warning(sb
, __func__
, "bitmap inode efe "
907 "not found but it's ok since the disc"
908 " is mounted read-only");
910 udf_error(sb
, __func__
, "bitmap inode efe not "
911 "found and attempted read-write mount");
917 udf_debug("udf_load_metadata_files Ok\n");
925 static void udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
,
926 struct kernel_lb_addr
*root
)
928 struct fileSetDesc
*fset
;
930 fset
= (struct fileSetDesc
*)bh
->b_data
;
932 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
934 UDF_SB(sb
)->s_serial_number
= le16_to_cpu(fset
->descTag
.tagSerialNum
);
936 udf_debug("Rootdir at block=%d, partition=%d\n",
937 root
->logicalBlockNum
, root
->partitionReferenceNum
);
940 int udf_compute_nr_groups(struct super_block
*sb
, u32 partition
)
942 struct udf_part_map
*map
= &UDF_SB(sb
)->s_partmaps
[partition
];
943 return DIV_ROUND_UP(map
->s_partition_len
+
944 (sizeof(struct spaceBitmapDesc
) << 3),
945 sb
->s_blocksize
* 8);
948 static struct udf_bitmap
*udf_sb_alloc_bitmap(struct super_block
*sb
, u32 index
)
950 struct udf_bitmap
*bitmap
;
954 nr_groups
= udf_compute_nr_groups(sb
, index
);
955 size
= sizeof(struct udf_bitmap
) +
956 (sizeof(struct buffer_head
*) * nr_groups
);
958 if (size
<= PAGE_SIZE
)
959 bitmap
= kmalloc(size
, GFP_KERNEL
);
961 bitmap
= vmalloc(size
); /* TODO: get rid of vmalloc */
963 if (bitmap
== NULL
) {
964 udf_error(sb
, __func__
,
965 "Unable to allocate space for bitmap "
966 "and %d buffer_head pointers", nr_groups
);
970 memset(bitmap
, 0x00, size
);
971 bitmap
->s_block_bitmap
= (struct buffer_head
**)(bitmap
+ 1);
972 bitmap
->s_nr_groups
= nr_groups
;
976 static int udf_fill_partdesc_info(struct super_block
*sb
,
977 struct partitionDesc
*p
, int p_index
)
979 struct udf_part_map
*map
;
980 struct udf_sb_info
*sbi
= UDF_SB(sb
);
981 struct partitionHeaderDesc
*phd
;
983 map
= &sbi
->s_partmaps
[p_index
];
985 map
->s_partition_len
= le32_to_cpu(p
->partitionLength
); /* blocks */
986 map
->s_partition_root
= le32_to_cpu(p
->partitionStartingLocation
);
988 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY
))
989 map
->s_partition_flags
|= UDF_PART_FLAG_READ_ONLY
;
990 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE
))
991 map
->s_partition_flags
|= UDF_PART_FLAG_WRITE_ONCE
;
992 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE
))
993 map
->s_partition_flags
|= UDF_PART_FLAG_REWRITABLE
;
994 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE
))
995 map
->s_partition_flags
|= UDF_PART_FLAG_OVERWRITABLE
;
997 udf_debug("Partition (%d type %x) starts at physical %d, "
998 "block length %d\n", p_index
,
999 map
->s_partition_type
, map
->s_partition_root
,
1000 map
->s_partition_len
);
1002 if (strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR02
) &&
1003 strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR03
))
1006 phd
= (struct partitionHeaderDesc
*)p
->partitionContentsUse
;
1007 if (phd
->unallocSpaceTable
.extLength
) {
1008 struct kernel_lb_addr loc
= {
1009 .logicalBlockNum
= le32_to_cpu(
1010 phd
->unallocSpaceTable
.extPosition
),
1011 .partitionReferenceNum
= p_index
,
1014 map
->s_uspace
.s_table
= udf_iget(sb
, &loc
);
1015 if (!map
->s_uspace
.s_table
) {
1016 udf_debug("cannot load unallocSpaceTable (part %d)\n",
1020 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_TABLE
;
1021 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1022 p_index
, map
->s_uspace
.s_table
->i_ino
);
1025 if (phd
->unallocSpaceBitmap
.extLength
) {
1026 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1029 map
->s_uspace
.s_bitmap
= bitmap
;
1030 bitmap
->s_extLength
= le32_to_cpu(
1031 phd
->unallocSpaceBitmap
.extLength
);
1032 bitmap
->s_extPosition
= le32_to_cpu(
1033 phd
->unallocSpaceBitmap
.extPosition
);
1034 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_BITMAP
;
1035 udf_debug("unallocSpaceBitmap (part %d) @ %d\n", p_index
,
1036 bitmap
->s_extPosition
);
1039 if (phd
->partitionIntegrityTable
.extLength
)
1040 udf_debug("partitionIntegrityTable (part %d)\n", p_index
);
1042 if (phd
->freedSpaceTable
.extLength
) {
1043 struct kernel_lb_addr loc
= {
1044 .logicalBlockNum
= le32_to_cpu(
1045 phd
->freedSpaceTable
.extPosition
),
1046 .partitionReferenceNum
= p_index
,
1049 map
->s_fspace
.s_table
= udf_iget(sb
, &loc
);
1050 if (!map
->s_fspace
.s_table
) {
1051 udf_debug("cannot load freedSpaceTable (part %d)\n",
1056 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_TABLE
;
1057 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1058 p_index
, map
->s_fspace
.s_table
->i_ino
);
1061 if (phd
->freedSpaceBitmap
.extLength
) {
1062 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1065 map
->s_fspace
.s_bitmap
= bitmap
;
1066 bitmap
->s_extLength
= le32_to_cpu(
1067 phd
->freedSpaceBitmap
.extLength
);
1068 bitmap
->s_extPosition
= le32_to_cpu(
1069 phd
->freedSpaceBitmap
.extPosition
);
1070 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_BITMAP
;
1071 udf_debug("freedSpaceBitmap (part %d) @ %d\n", p_index
,
1072 bitmap
->s_extPosition
);
1077 static int udf_load_vat(struct super_block
*sb
, int p_index
, int type1_index
)
1079 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1080 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1081 struct kernel_lb_addr ino
;
1082 struct buffer_head
*bh
= NULL
;
1083 struct udf_inode_info
*vati
;
1085 struct virtualAllocationTable20
*vat20
;
1087 /* VAT file entry is in the last recorded block */
1088 ino
.partitionReferenceNum
= type1_index
;
1089 ino
.logicalBlockNum
= sbi
->s_last_block
- map
->s_partition_root
;
1090 sbi
->s_vat_inode
= udf_iget(sb
, &ino
);
1091 if (!sbi
->s_vat_inode
)
1094 if (map
->s_partition_type
== UDF_VIRTUAL_MAP15
) {
1095 map
->s_type_specific
.s_virtual
.s_start_offset
= 0;
1096 map
->s_type_specific
.s_virtual
.s_num_entries
=
1097 (sbi
->s_vat_inode
->i_size
- 36) >> 2;
1098 } else if (map
->s_partition_type
== UDF_VIRTUAL_MAP20
) {
1099 vati
= UDF_I(sbi
->s_vat_inode
);
1100 if (vati
->i_alloc_type
!= ICBTAG_FLAG_AD_IN_ICB
) {
1101 pos
= udf_block_map(sbi
->s_vat_inode
, 0);
1102 bh
= sb_bread(sb
, pos
);
1105 vat20
= (struct virtualAllocationTable20
*)bh
->b_data
;
1107 vat20
= (struct virtualAllocationTable20
*)
1111 map
->s_type_specific
.s_virtual
.s_start_offset
=
1112 le16_to_cpu(vat20
->lengthHeader
);
1113 map
->s_type_specific
.s_virtual
.s_num_entries
=
1114 (sbi
->s_vat_inode
->i_size
-
1115 map
->s_type_specific
.s_virtual
.
1116 s_start_offset
) >> 2;
1122 static int udf_load_partdesc(struct super_block
*sb
, sector_t block
)
1124 struct buffer_head
*bh
;
1125 struct partitionDesc
*p
;
1126 struct udf_part_map
*map
;
1127 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1129 uint16_t partitionNumber
;
1133 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1136 if (ident
!= TAG_IDENT_PD
)
1139 p
= (struct partitionDesc
*)bh
->b_data
;
1140 partitionNumber
= le16_to_cpu(p
->partitionNumber
);
1142 /* First scan for TYPE1, SPARABLE and METADATA partitions */
1143 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1144 map
= &sbi
->s_partmaps
[i
];
1145 udf_debug("Searching map: (%d == %d)\n",
1146 map
->s_partition_num
, partitionNumber
);
1147 if (map
->s_partition_num
== partitionNumber
&&
1148 (map
->s_partition_type
== UDF_TYPE1_MAP15
||
1149 map
->s_partition_type
== UDF_SPARABLE_MAP15
))
1153 if (i
>= sbi
->s_partitions
) {
1154 udf_debug("Partition (%d) not found in partition map\n",
1159 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1162 * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and
1163 * PHYSICAL partitions are already set up
1166 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1167 map
= &sbi
->s_partmaps
[i
];
1169 if (map
->s_partition_num
== partitionNumber
&&
1170 (map
->s_partition_type
== UDF_VIRTUAL_MAP15
||
1171 map
->s_partition_type
== UDF_VIRTUAL_MAP20
||
1172 map
->s_partition_type
== UDF_METADATA_MAP25
))
1176 if (i
>= sbi
->s_partitions
)
1179 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1183 if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
1184 ret
= udf_load_metadata_files(sb
, i
);
1186 printk(KERN_ERR
"UDF-fs: error loading MetaData "
1187 "partition map %d\n", i
);
1191 ret
= udf_load_vat(sb
, i
, type1_idx
);
1195 * Mark filesystem read-only if we have a partition with
1196 * virtual map since we don't handle writing to it (we
1197 * overwrite blocks instead of relocating them).
1199 sb
->s_flags
|= MS_RDONLY
;
1200 printk(KERN_NOTICE
"UDF-fs: Filesystem marked read-only "
1201 "because writing to pseudooverwrite partition is "
1202 "not implemented.\n");
1205 /* In case loading failed, we handle cleanup in udf_fill_super */
1210 static int udf_load_logicalvol(struct super_block
*sb
, sector_t block
,
1211 struct kernel_lb_addr
*fileset
)
1213 struct logicalVolDesc
*lvd
;
1216 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1217 struct genericPartitionMap
*gpm
;
1219 struct buffer_head
*bh
;
1222 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1225 BUG_ON(ident
!= TAG_IDENT_LVD
);
1226 lvd
= (struct logicalVolDesc
*)bh
->b_data
;
1228 i
= udf_sb_alloc_partition_maps(sb
, le32_to_cpu(lvd
->numPartitionMaps
));
1234 for (i
= 0, offset
= 0;
1235 i
< sbi
->s_partitions
&& offset
< le32_to_cpu(lvd
->mapTableLength
);
1236 i
++, offset
+= gpm
->partitionMapLength
) {
1237 struct udf_part_map
*map
= &sbi
->s_partmaps
[i
];
1238 gpm
= (struct genericPartitionMap
*)
1239 &(lvd
->partitionMaps
[offset
]);
1240 type
= gpm
->partitionMapType
;
1242 struct genericPartitionMap1
*gpm1
=
1243 (struct genericPartitionMap1
*)gpm
;
1244 map
->s_partition_type
= UDF_TYPE1_MAP15
;
1245 map
->s_volumeseqnum
= le16_to_cpu(gpm1
->volSeqNum
);
1246 map
->s_partition_num
= le16_to_cpu(gpm1
->partitionNum
);
1247 map
->s_partition_func
= NULL
;
1248 } else if (type
== 2) {
1249 struct udfPartitionMap2
*upm2
=
1250 (struct udfPartitionMap2
*)gpm
;
1251 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
,
1252 strlen(UDF_ID_VIRTUAL
))) {
1254 le16_to_cpu(((__le16
*)upm2
->partIdent
.
1257 map
->s_partition_type
=
1259 map
->s_partition_func
=
1260 udf_get_pblock_virt15
;
1262 map
->s_partition_type
=
1264 map
->s_partition_func
=
1265 udf_get_pblock_virt20
;
1267 } else if (!strncmp(upm2
->partIdent
.ident
,
1269 strlen(UDF_ID_SPARABLE
))) {
1271 struct sparingTable
*st
;
1272 struct sparablePartitionMap
*spm
=
1273 (struct sparablePartitionMap
*)gpm
;
1275 map
->s_partition_type
= UDF_SPARABLE_MAP15
;
1276 map
->s_type_specific
.s_sparing
.s_packet_len
=
1277 le16_to_cpu(spm
->packetLength
);
1278 for (j
= 0; j
< spm
->numSparingTables
; j
++) {
1279 struct buffer_head
*bh2
;
1282 spm
->locSparingTable
[j
]);
1283 bh2
= udf_read_tagged(sb
, loc
, loc
,
1285 map
->s_type_specific
.s_sparing
.
1286 s_spar_map
[j
] = bh2
;
1291 st
= (struct sparingTable
*)bh2
->b_data
;
1292 if (ident
!= 0 || strncmp(
1293 st
->sparingIdent
.ident
,
1295 strlen(UDF_ID_SPARING
))) {
1297 map
->s_type_specific
.s_sparing
.
1298 s_spar_map
[j
] = NULL
;
1301 map
->s_partition_func
= udf_get_pblock_spar15
;
1302 } else if (!strncmp(upm2
->partIdent
.ident
,
1304 strlen(UDF_ID_METADATA
))) {
1305 struct udf_meta_data
*mdata
=
1306 &map
->s_type_specific
.s_metadata
;
1307 struct metadataPartitionMap
*mdm
=
1308 (struct metadataPartitionMap
*)
1309 &(lvd
->partitionMaps
[offset
]);
1310 udf_debug("Parsing Logical vol part %d "
1311 "type %d id=%s\n", i
, type
,
1314 map
->s_partition_type
= UDF_METADATA_MAP25
;
1315 map
->s_partition_func
= udf_get_pblock_meta25
;
1317 mdata
->s_meta_file_loc
=
1318 le32_to_cpu(mdm
->metadataFileLoc
);
1319 mdata
->s_mirror_file_loc
=
1320 le32_to_cpu(mdm
->metadataMirrorFileLoc
);
1321 mdata
->s_bitmap_file_loc
=
1322 le32_to_cpu(mdm
->metadataBitmapFileLoc
);
1323 mdata
->s_alloc_unit_size
=
1324 le32_to_cpu(mdm
->allocUnitSize
);
1325 mdata
->s_align_unit_size
=
1326 le16_to_cpu(mdm
->alignUnitSize
);
1327 mdata
->s_dup_md_flag
=
1330 udf_debug("Metadata Ident suffix=0x%x\n",
1333 mdm
->partIdent
.identSuffix
)[0])));
1334 udf_debug("Metadata part num=%d\n",
1335 le16_to_cpu(mdm
->partitionNum
));
1336 udf_debug("Metadata part alloc unit size=%d\n",
1337 le32_to_cpu(mdm
->allocUnitSize
));
1338 udf_debug("Metadata file loc=%d\n",
1339 le32_to_cpu(mdm
->metadataFileLoc
));
1340 udf_debug("Mirror file loc=%d\n",
1341 le32_to_cpu(mdm
->metadataMirrorFileLoc
));
1342 udf_debug("Bitmap file loc=%d\n",
1343 le32_to_cpu(mdm
->metadataBitmapFileLoc
));
1344 udf_debug("Duplicate Flag: %d %d\n",
1345 mdata
->s_dup_md_flag
, mdm
->flags
);
1347 udf_debug("Unknown ident: %s\n",
1348 upm2
->partIdent
.ident
);
1351 map
->s_volumeseqnum
= le16_to_cpu(upm2
->volSeqNum
);
1352 map
->s_partition_num
= le16_to_cpu(upm2
->partitionNum
);
1354 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1355 i
, map
->s_partition_num
, type
,
1356 map
->s_volumeseqnum
);
1360 struct long_ad
*la
= (struct long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
1362 *fileset
= lelb_to_cpu(la
->extLocation
);
1363 udf_debug("FileSet found in LogicalVolDesc at block=%d, "
1364 "partition=%d\n", fileset
->logicalBlockNum
,
1365 fileset
->partitionReferenceNum
);
1367 if (lvd
->integritySeqExt
.extLength
)
1368 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
1376 * udf_load_logicalvolint
1379 static void udf_load_logicalvolint(struct super_block
*sb
, struct kernel_extent_ad loc
)
1381 struct buffer_head
*bh
= NULL
;
1383 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1384 struct logicalVolIntegrityDesc
*lvid
;
1386 while (loc
.extLength
> 0 &&
1387 (bh
= udf_read_tagged(sb
, loc
.extLocation
,
1388 loc
.extLocation
, &ident
)) &&
1389 ident
== TAG_IDENT_LVID
) {
1390 sbi
->s_lvid_bh
= bh
;
1391 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1393 if (lvid
->nextIntegrityExt
.extLength
)
1394 udf_load_logicalvolint(sb
,
1395 leea_to_cpu(lvid
->nextIntegrityExt
));
1397 if (sbi
->s_lvid_bh
!= bh
)
1399 loc
.extLength
-= sb
->s_blocksize
;
1402 if (sbi
->s_lvid_bh
!= bh
)
1407 * udf_process_sequence
1410 * Process a main/reserve volume descriptor sequence.
1413 * sb Pointer to _locked_ superblock.
1414 * block First block of first extent of the sequence.
1415 * lastblock Lastblock of first extent of the sequence.
1418 * July 1, 1997 - Andrew E. Mileski
1419 * Written, tested, and released.
1421 static noinline
int udf_process_sequence(struct super_block
*sb
, long block
,
1422 long lastblock
, struct kernel_lb_addr
*fileset
)
1424 struct buffer_head
*bh
= NULL
;
1425 struct udf_vds_record vds
[VDS_POS_LENGTH
];
1426 struct udf_vds_record
*curr
;
1427 struct generic_desc
*gd
;
1428 struct volDescPtr
*vdp
;
1432 long next_s
= 0, next_e
= 0;
1434 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
1437 * Read the main descriptor sequence and find which descriptors
1440 for (; (!done
&& block
<= lastblock
); block
++) {
1442 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1444 printk(KERN_ERR
"udf: Block %Lu of volume descriptor "
1445 "sequence is corrupted or we could not read "
1446 "it.\n", (unsigned long long)block
);
1450 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1451 gd
= (struct generic_desc
*)bh
->b_data
;
1452 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
1454 case TAG_IDENT_PVD
: /* ISO 13346 3/10.1 */
1455 curr
= &vds
[VDS_POS_PRIMARY_VOL_DESC
];
1456 if (vdsn
>= curr
->volDescSeqNum
) {
1457 curr
->volDescSeqNum
= vdsn
;
1458 curr
->block
= block
;
1461 case TAG_IDENT_VDP
: /* ISO 13346 3/10.3 */
1462 curr
= &vds
[VDS_POS_VOL_DESC_PTR
];
1463 if (vdsn
>= curr
->volDescSeqNum
) {
1464 curr
->volDescSeqNum
= vdsn
;
1465 curr
->block
= block
;
1467 vdp
= (struct volDescPtr
*)bh
->b_data
;
1468 next_s
= le32_to_cpu(
1469 vdp
->nextVolDescSeqExt
.extLocation
);
1470 next_e
= le32_to_cpu(
1471 vdp
->nextVolDescSeqExt
.extLength
);
1472 next_e
= next_e
>> sb
->s_blocksize_bits
;
1476 case TAG_IDENT_IUVD
: /* ISO 13346 3/10.4 */
1477 curr
= &vds
[VDS_POS_IMP_USE_VOL_DESC
];
1478 if (vdsn
>= curr
->volDescSeqNum
) {
1479 curr
->volDescSeqNum
= vdsn
;
1480 curr
->block
= block
;
1483 case TAG_IDENT_PD
: /* ISO 13346 3/10.5 */
1484 curr
= &vds
[VDS_POS_PARTITION_DESC
];
1486 curr
->block
= block
;
1488 case TAG_IDENT_LVD
: /* ISO 13346 3/10.6 */
1489 curr
= &vds
[VDS_POS_LOGICAL_VOL_DESC
];
1490 if (vdsn
>= curr
->volDescSeqNum
) {
1491 curr
->volDescSeqNum
= vdsn
;
1492 curr
->block
= block
;
1495 case TAG_IDENT_USD
: /* ISO 13346 3/10.8 */
1496 curr
= &vds
[VDS_POS_UNALLOC_SPACE_DESC
];
1497 if (vdsn
>= curr
->volDescSeqNum
) {
1498 curr
->volDescSeqNum
= vdsn
;
1499 curr
->block
= block
;
1502 case TAG_IDENT_TD
: /* ISO 13346 3/10.9 */
1503 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1507 next_s
= next_e
= 0;
1515 * Now read interesting descriptors again and process them
1516 * in a suitable order
1518 if (!vds
[VDS_POS_PRIMARY_VOL_DESC
].block
) {
1519 printk(KERN_ERR
"udf: Primary Volume Descriptor not found!\n");
1522 if (udf_load_pvoldesc(sb
, vds
[VDS_POS_PRIMARY_VOL_DESC
].block
))
1525 if (vds
[VDS_POS_LOGICAL_VOL_DESC
].block
&& udf_load_logicalvol(sb
,
1526 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
, fileset
))
1529 if (vds
[VDS_POS_PARTITION_DESC
].block
) {
1531 * We rescan the whole descriptor sequence to find
1532 * partition descriptor blocks and process them.
1534 for (block
= vds
[VDS_POS_PARTITION_DESC
].block
;
1535 block
< vds
[VDS_POS_TERMINATING_DESC
].block
;
1537 if (udf_load_partdesc(sb
, block
))
1544 static int udf_load_sequence(struct super_block
*sb
, struct buffer_head
*bh
,
1545 struct kernel_lb_addr
*fileset
)
1547 struct anchorVolDescPtr
*anchor
;
1548 long main_s
, main_e
, reserve_s
, reserve_e
;
1549 struct udf_sb_info
*sbi
;
1552 anchor
= (struct anchorVolDescPtr
*)bh
->b_data
;
1554 /* Locate the main sequence */
1555 main_s
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLocation
);
1556 main_e
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLength
);
1557 main_e
= main_e
>> sb
->s_blocksize_bits
;
1560 /* Locate the reserve sequence */
1561 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1562 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1563 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1564 reserve_e
+= reserve_s
;
1566 /* Process the main & reserve sequences */
1567 /* responsible for finding the PartitionDesc(s) */
1568 if (!udf_process_sequence(sb
, main_s
, main_e
, fileset
))
1570 return !udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
);
1574 * Check whether there is an anchor block in the given block and
1575 * load Volume Descriptor Sequence if so.
1577 static int udf_check_anchor_block(struct super_block
*sb
, sector_t block
,
1578 struct kernel_lb_addr
*fileset
)
1580 struct buffer_head
*bh
;
1584 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_VARCONV
) &&
1585 udf_fixed_to_variable(block
) >=
1586 sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
)
1589 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1592 if (ident
!= TAG_IDENT_AVDP
) {
1596 ret
= udf_load_sequence(sb
, bh
, fileset
);
1601 /* Search for an anchor volume descriptor pointer */
1602 static sector_t
udf_scan_anchors(struct super_block
*sb
, sector_t lastblock
,
1603 struct kernel_lb_addr
*fileset
)
1607 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1610 /* First try user provided anchor */
1611 if (sbi
->s_anchor
) {
1612 if (udf_check_anchor_block(sb
, sbi
->s_anchor
, fileset
))
1616 * according to spec, anchor is in either:
1620 * however, if the disc isn't closed, it could be 512.
1622 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 256, fileset
))
1625 * The trouble is which block is the last one. Drives often misreport
1626 * this so we try various possibilities.
1628 last
[last_count
++] = lastblock
;
1630 last
[last_count
++] = lastblock
- 1;
1631 last
[last_count
++] = lastblock
+ 1;
1633 last
[last_count
++] = lastblock
- 2;
1634 if (lastblock
>= 150)
1635 last
[last_count
++] = lastblock
- 150;
1636 if (lastblock
>= 152)
1637 last
[last_count
++] = lastblock
- 152;
1639 for (i
= 0; i
< last_count
; i
++) {
1640 if (last
[i
] >= sb
->s_bdev
->bd_inode
->i_size
>>
1641 sb
->s_blocksize_bits
)
1643 if (udf_check_anchor_block(sb
, last
[i
], fileset
))
1647 if (udf_check_anchor_block(sb
, last
[i
] - 256, fileset
))
1651 /* Finally try block 512 in case media is open */
1652 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 512, fileset
))
1658 * Find an anchor volume descriptor and load Volume Descriptor Sequence from
1659 * area specified by it. The function expects sbi->s_lastblock to be the last
1660 * block on the media.
1662 * Return 1 if ok, 0 if not found.
1665 static int udf_find_anchor(struct super_block
*sb
,
1666 struct kernel_lb_addr
*fileset
)
1669 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1671 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1675 /* No anchor found? Try VARCONV conversion of block numbers */
1676 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
1677 /* Firstly, we try to not convert number of the last block */
1678 lastblock
= udf_scan_anchors(sb
,
1679 udf_variable_to_fixed(sbi
->s_last_block
),
1684 /* Secondly, we try with converted number of the last block */
1685 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1687 /* VARCONV didn't help. Clear it. */
1688 UDF_CLEAR_FLAG(sb
, UDF_FLAG_VARCONV
);
1692 sbi
->s_last_block
= lastblock
;
1697 * Check Volume Structure Descriptor, find Anchor block and load Volume
1698 * Descriptor Sequence
1700 static int udf_load_vrs(struct super_block
*sb
, struct udf_options
*uopt
,
1701 int silent
, struct kernel_lb_addr
*fileset
)
1703 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1706 if (!sb_set_blocksize(sb
, uopt
->blocksize
)) {
1708 printk(KERN_WARNING
"UDF-fs: Bad block size\n");
1711 sbi
->s_last_block
= uopt
->lastblock
;
1713 /* Check that it is NSR02 compliant */
1714 nsr_off
= udf_check_vsd(sb
);
1717 printk(KERN_WARNING
"UDF-fs: No VRS found\n");
1721 udf_debug("Failed to read byte 32768. Assuming open "
1722 "disc. Skipping validity check\n");
1723 if (!sbi
->s_last_block
)
1724 sbi
->s_last_block
= udf_get_last_block(sb
);
1726 udf_debug("Validity check skipped because of novrs option\n");
1729 /* Look for anchor block and load Volume Descriptor Sequence */
1730 sbi
->s_anchor
= uopt
->anchor
;
1731 if (!udf_find_anchor(sb
, fileset
)) {
1733 printk(KERN_WARNING
"UDF-fs: No anchor found\n");
1739 static void udf_open_lvid(struct super_block
*sb
)
1741 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1742 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1743 struct logicalVolIntegrityDesc
*lvid
;
1744 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1748 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1749 lvidiu
= udf_sb_lvidiu(sbi
);
1751 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1752 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1753 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
,
1755 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN
);
1757 lvid
->descTag
.descCRC
= cpu_to_le16(
1758 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1759 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1761 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1762 mark_buffer_dirty(bh
);
1763 sbi
->s_lvid_dirty
= 0;
1766 static void udf_close_lvid(struct super_block
*sb
)
1768 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1769 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1770 struct logicalVolIntegrityDesc
*lvid
;
1771 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1776 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1777 lvidiu
= udf_sb_lvidiu(sbi
);
1778 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1779 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1780 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
, CURRENT_TIME
);
1781 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(lvidiu
->maxUDFWriteRev
))
1782 lvidiu
->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
1783 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFReadRev
))
1784 lvidiu
->minUDFReadRev
= cpu_to_le16(sbi
->s_udfrev
);
1785 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFWriteRev
))
1786 lvidiu
->minUDFWriteRev
= cpu_to_le16(sbi
->s_udfrev
);
1787 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE
);
1789 lvid
->descTag
.descCRC
= cpu_to_le16(
1790 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1791 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1793 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1794 mark_buffer_dirty(bh
);
1795 sbi
->s_lvid_dirty
= 0;
1798 static void udf_sb_free_bitmap(struct udf_bitmap
*bitmap
)
1801 int nr_groups
= bitmap
->s_nr_groups
;
1802 int size
= sizeof(struct udf_bitmap
) + (sizeof(struct buffer_head
*) *
1805 for (i
= 0; i
< nr_groups
; i
++)
1806 if (bitmap
->s_block_bitmap
[i
])
1807 brelse(bitmap
->s_block_bitmap
[i
]);
1809 if (size
<= PAGE_SIZE
)
1815 static void udf_free_partition(struct udf_part_map
*map
)
1818 struct udf_meta_data
*mdata
;
1820 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
)
1821 iput(map
->s_uspace
.s_table
);
1822 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
)
1823 iput(map
->s_fspace
.s_table
);
1824 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
)
1825 udf_sb_free_bitmap(map
->s_uspace
.s_bitmap
);
1826 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
)
1827 udf_sb_free_bitmap(map
->s_fspace
.s_bitmap
);
1828 if (map
->s_partition_type
== UDF_SPARABLE_MAP15
)
1829 for (i
= 0; i
< 4; i
++)
1830 brelse(map
->s_type_specific
.s_sparing
.s_spar_map
[i
]);
1831 else if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
1832 mdata
= &map
->s_type_specific
.s_metadata
;
1833 iput(mdata
->s_metadata_fe
);
1834 mdata
->s_metadata_fe
= NULL
;
1836 iput(mdata
->s_mirror_fe
);
1837 mdata
->s_mirror_fe
= NULL
;
1839 iput(mdata
->s_bitmap_fe
);
1840 mdata
->s_bitmap_fe
= NULL
;
1844 static int udf_fill_super(struct super_block
*sb
, void *options
, int silent
)
1848 struct inode
*inode
= NULL
;
1849 struct udf_options uopt
;
1850 struct kernel_lb_addr rootdir
, fileset
;
1851 struct udf_sb_info
*sbi
;
1853 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
) | (1 << UDF_FLAG_STRICT
);
1857 uopt
.fmode
= UDF_INVALID_MODE
;
1858 uopt
.dmode
= UDF_INVALID_MODE
;
1860 sbi
= kzalloc(sizeof(struct udf_sb_info
), GFP_KERNEL
);
1864 sb
->s_fs_info
= sbi
;
1866 mutex_init(&sbi
->s_alloc_mutex
);
1868 if (!udf_parse_options((char *)options
, &uopt
, false))
1871 if (uopt
.flags
& (1 << UDF_FLAG_UTF8
) &&
1872 uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) {
1873 udf_error(sb
, "udf_read_super",
1874 "utf8 cannot be combined with iocharset\n");
1877 #ifdef CONFIG_UDF_NLS
1878 if ((uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) && !uopt
.nls_map
) {
1879 uopt
.nls_map
= load_nls_default();
1881 uopt
.flags
&= ~(1 << UDF_FLAG_NLS_MAP
);
1883 udf_debug("Using default NLS map\n");
1886 if (!(uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)))
1887 uopt
.flags
|= (1 << UDF_FLAG_UTF8
);
1889 fileset
.logicalBlockNum
= 0xFFFFFFFF;
1890 fileset
.partitionReferenceNum
= 0xFFFF;
1892 sbi
->s_flags
= uopt
.flags
;
1893 sbi
->s_uid
= uopt
.uid
;
1894 sbi
->s_gid
= uopt
.gid
;
1895 sbi
->s_umask
= uopt
.umask
;
1896 sbi
->s_fmode
= uopt
.fmode
;
1897 sbi
->s_dmode
= uopt
.dmode
;
1898 sbi
->s_nls_map
= uopt
.nls_map
;
1900 if (uopt
.session
== 0xFFFFFFFF)
1901 sbi
->s_session
= udf_get_last_session(sb
);
1903 sbi
->s_session
= uopt
.session
;
1905 udf_debug("Multi-session=%d\n", sbi
->s_session
);
1907 /* Fill in the rest of the superblock */
1908 sb
->s_op
= &udf_sb_ops
;
1909 sb
->s_export_op
= &udf_export_ops
;
1912 sb
->s_magic
= UDF_SUPER_MAGIC
;
1913 sb
->s_time_gran
= 1000;
1915 if (uopt
.flags
& (1 << UDF_FLAG_BLOCKSIZE_SET
)) {
1916 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
1918 uopt
.blocksize
= bdev_logical_block_size(sb
->s_bdev
);
1919 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
1920 if (!ret
&& uopt
.blocksize
!= UDF_DEFAULT_BLOCKSIZE
) {
1923 "UDF-fs: Rescanning with blocksize "
1924 "%d\n", UDF_DEFAULT_BLOCKSIZE
);
1925 uopt
.blocksize
= UDF_DEFAULT_BLOCKSIZE
;
1926 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
1930 printk(KERN_WARNING
"UDF-fs: No partition found (1)\n");
1934 udf_debug("Lastblock=%d\n", sbi
->s_last_block
);
1936 if (sbi
->s_lvid_bh
) {
1937 struct logicalVolIntegrityDescImpUse
*lvidiu
=
1939 uint16_t minUDFReadRev
= le16_to_cpu(lvidiu
->minUDFReadRev
);
1940 uint16_t minUDFWriteRev
= le16_to_cpu(lvidiu
->minUDFWriteRev
);
1941 /* uint16_t maxUDFWriteRev =
1942 le16_to_cpu(lvidiu->maxUDFWriteRev); */
1944 if (minUDFReadRev
> UDF_MAX_READ_VERSION
) {
1945 printk(KERN_ERR
"UDF-fs: minUDFReadRev=%x "
1947 le16_to_cpu(lvidiu
->minUDFReadRev
),
1948 UDF_MAX_READ_VERSION
);
1950 } else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
)
1951 sb
->s_flags
|= MS_RDONLY
;
1953 sbi
->s_udfrev
= minUDFWriteRev
;
1955 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
1956 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
1957 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
1958 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
1961 if (!sbi
->s_partitions
) {
1962 printk(KERN_WARNING
"UDF-fs: No partition found (2)\n");
1966 if (sbi
->s_partmaps
[sbi
->s_partition
].s_partition_flags
&
1967 UDF_PART_FLAG_READ_ONLY
) {
1968 printk(KERN_NOTICE
"UDF-fs: Partition marked readonly; "
1969 "forcing readonly mount\n");
1970 sb
->s_flags
|= MS_RDONLY
;
1973 if (udf_find_fileset(sb
, &fileset
, &rootdir
)) {
1974 printk(KERN_WARNING
"UDF-fs: No fileset found\n");
1979 struct timestamp ts
;
1980 udf_time_to_disk_stamp(&ts
, sbi
->s_record_time
);
1981 udf_info("UDF: Mounting volume '%s', "
1982 "timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
1983 sbi
->s_volume_ident
, le16_to_cpu(ts
.year
), ts
.month
, ts
.day
,
1984 ts
.hour
, ts
.minute
, le16_to_cpu(ts
.typeAndTimezone
));
1986 if (!(sb
->s_flags
& MS_RDONLY
))
1989 /* Assign the root inode */
1990 /* assign inodes by physical block number */
1991 /* perhaps it's not extensible enough, but for now ... */
1992 inode
= udf_iget(sb
, &rootdir
);
1994 printk(KERN_ERR
"UDF-fs: Error in udf_iget, block=%d, "
1996 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
2000 /* Allocate a dentry for the root inode */
2001 sb
->s_root
= d_alloc_root(inode
);
2003 printk(KERN_ERR
"UDF-fs: Couldn't allocate root dentry\n");
2007 sb
->s_maxbytes
= MAX_LFS_FILESIZE
;
2011 if (sbi
->s_vat_inode
)
2012 iput(sbi
->s_vat_inode
);
2013 if (sbi
->s_partitions
)
2014 for (i
= 0; i
< sbi
->s_partitions
; i
++)
2015 udf_free_partition(&sbi
->s_partmaps
[i
]);
2016 #ifdef CONFIG_UDF_NLS
2017 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2018 unload_nls(sbi
->s_nls_map
);
2020 if (!(sb
->s_flags
& MS_RDONLY
))
2022 brelse(sbi
->s_lvid_bh
);
2024 kfree(sbi
->s_partmaps
);
2026 sb
->s_fs_info
= NULL
;
2031 static void udf_error(struct super_block
*sb
, const char *function
,
2032 const char *fmt
, ...)
2036 if (!(sb
->s_flags
& MS_RDONLY
)) {
2040 va_start(args
, fmt
);
2041 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2043 printk(KERN_CRIT
"UDF-fs error (device %s): %s: %s\n",
2044 sb
->s_id
, function
, error_buf
);
2047 void udf_warning(struct super_block
*sb
, const char *function
,
2048 const char *fmt
, ...)
2052 va_start(args
, fmt
);
2053 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2055 printk(KERN_WARNING
"UDF-fs warning (device %s): %s: %s\n",
2056 sb
->s_id
, function
, error_buf
);
2059 static void udf_put_super(struct super_block
*sb
)
2062 struct udf_sb_info
*sbi
;
2068 if (sbi
->s_vat_inode
)
2069 iput(sbi
->s_vat_inode
);
2070 if (sbi
->s_partitions
)
2071 for (i
= 0; i
< sbi
->s_partitions
; i
++)
2072 udf_free_partition(&sbi
->s_partmaps
[i
]);
2073 #ifdef CONFIG_UDF_NLS
2074 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2075 unload_nls(sbi
->s_nls_map
);
2077 if (!(sb
->s_flags
& MS_RDONLY
))
2079 brelse(sbi
->s_lvid_bh
);
2080 kfree(sbi
->s_partmaps
);
2081 kfree(sb
->s_fs_info
);
2082 sb
->s_fs_info
= NULL
;
2087 static int udf_sync_fs(struct super_block
*sb
, int wait
)
2089 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2091 mutex_lock(&sbi
->s_alloc_mutex
);
2092 if (sbi
->s_lvid_dirty
) {
2094 * Blockdevice will be synced later so we don't have to submit
2097 mark_buffer_dirty(sbi
->s_lvid_bh
);
2099 sbi
->s_lvid_dirty
= 0;
2101 mutex_unlock(&sbi
->s_alloc_mutex
);
2106 static int udf_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
2108 struct super_block
*sb
= dentry
->d_sb
;
2109 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2110 struct logicalVolIntegrityDescImpUse
*lvidiu
;
2111 u64 id
= huge_encode_dev(sb
->s_bdev
->bd_dev
);
2113 if (sbi
->s_lvid_bh
!= NULL
)
2114 lvidiu
= udf_sb_lvidiu(sbi
);
2118 buf
->f_type
= UDF_SUPER_MAGIC
;
2119 buf
->f_bsize
= sb
->s_blocksize
;
2120 buf
->f_blocks
= sbi
->s_partmaps
[sbi
->s_partition
].s_partition_len
;
2121 buf
->f_bfree
= udf_count_free(sb
);
2122 buf
->f_bavail
= buf
->f_bfree
;
2123 buf
->f_files
= (lvidiu
!= NULL
? (le32_to_cpu(lvidiu
->numFiles
) +
2124 le32_to_cpu(lvidiu
->numDirs
)) : 0)
2126 buf
->f_ffree
= buf
->f_bfree
;
2127 buf
->f_namelen
= UDF_NAME_LEN
- 2;
2128 buf
->f_fsid
.val
[0] = (u32
)id
;
2129 buf
->f_fsid
.val
[1] = (u32
)(id
>> 32);
2134 static unsigned int udf_count_free_bitmap(struct super_block
*sb
,
2135 struct udf_bitmap
*bitmap
)
2137 struct buffer_head
*bh
= NULL
;
2138 unsigned int accum
= 0;
2140 int block
= 0, newblock
;
2141 struct kernel_lb_addr loc
;
2145 struct spaceBitmapDesc
*bm
;
2149 loc
.logicalBlockNum
= bitmap
->s_extPosition
;
2150 loc
.partitionReferenceNum
= UDF_SB(sb
)->s_partition
;
2151 bh
= udf_read_ptagged(sb
, &loc
, 0, &ident
);
2154 printk(KERN_ERR
"udf: udf_count_free failed\n");
2156 } else if (ident
!= TAG_IDENT_SBD
) {
2158 printk(KERN_ERR
"udf: udf_count_free failed\n");
2162 bm
= (struct spaceBitmapDesc
*)bh
->b_data
;
2163 bytes
= le32_to_cpu(bm
->numOfBytes
);
2164 index
= sizeof(struct spaceBitmapDesc
); /* offset in first block only */
2165 ptr
= (uint8_t *)bh
->b_data
;
2168 u32 cur_bytes
= min_t(u32
, bytes
, sb
->s_blocksize
- index
);
2169 accum
+= bitmap_weight((const unsigned long *)(ptr
+ index
),
2174 newblock
= udf_get_lb_pblock(sb
, &loc
, ++block
);
2175 bh
= udf_tread(sb
, newblock
);
2177 udf_debug("read failed\n");
2181 ptr
= (uint8_t *)bh
->b_data
;
2192 static unsigned int udf_count_free_table(struct super_block
*sb
,
2193 struct inode
*table
)
2195 unsigned int accum
= 0;
2197 struct kernel_lb_addr eloc
;
2199 struct extent_position epos
;
2203 epos
.block
= UDF_I(table
)->i_location
;
2204 epos
.offset
= sizeof(struct unallocSpaceEntry
);
2207 while ((etype
= udf_next_aext(table
, &epos
, &eloc
, &elen
, 1)) != -1)
2208 accum
+= (elen
>> table
->i_sb
->s_blocksize_bits
);
2217 static unsigned int udf_count_free(struct super_block
*sb
)
2219 unsigned int accum
= 0;
2220 struct udf_sb_info
*sbi
;
2221 struct udf_part_map
*map
;
2224 if (sbi
->s_lvid_bh
) {
2225 struct logicalVolIntegrityDesc
*lvid
=
2226 (struct logicalVolIntegrityDesc
*)
2227 sbi
->s_lvid_bh
->b_data
;
2228 if (le32_to_cpu(lvid
->numOfPartitions
) > sbi
->s_partition
) {
2229 accum
= le32_to_cpu(
2230 lvid
->freeSpaceTable
[sbi
->s_partition
]);
2231 if (accum
== 0xFFFFFFFF)
2239 map
= &sbi
->s_partmaps
[sbi
->s_partition
];
2240 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
) {
2241 accum
+= udf_count_free_bitmap(sb
,
2242 map
->s_uspace
.s_bitmap
);
2244 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
) {
2245 accum
+= udf_count_free_bitmap(sb
,
2246 map
->s_fspace
.s_bitmap
);
2251 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
) {
2252 accum
+= udf_count_free_table(sb
,
2253 map
->s_uspace
.s_table
);
2255 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
) {
2256 accum
+= udf_count_free_table(sb
,
2257 map
->s_fspace
.s_table
);