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/buffer_head.h>
52 #include <linux/vfs.h>
53 #include <linux/vmalloc.h>
54 #include <linux/errno.h>
55 #include <linux/mount.h>
56 #include <linux/seq_file.h>
57 #include <linux/bitmap.h>
58 #include <linux/crc-itu-t.h>
59 #include <linux/log2.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 enum { UDF_MAX_LINKS
= 0xffff };
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 dentry
*);
97 struct logicalVolIntegrityDescImpUse
*udf_sb_lvidiu(struct udf_sb_info
*sbi
)
99 struct logicalVolIntegrityDesc
*lvid
=
100 (struct logicalVolIntegrityDesc
*)sbi
->s_lvid_bh
->b_data
;
101 __u32 number_of_partitions
= le32_to_cpu(lvid
->numOfPartitions
);
102 __u32 offset
= number_of_partitions
* 2 *
103 sizeof(uint32_t)/sizeof(uint8_t);
104 return (struct logicalVolIntegrityDescImpUse
*)&(lvid
->impUse
[offset
]);
107 /* UDF filesystem type */
108 static struct dentry
*udf_mount(struct file_system_type
*fs_type
,
109 int flags
, const char *dev_name
, void *data
)
111 return mount_bdev(fs_type
, flags
, dev_name
, data
, udf_fill_super
);
114 static struct file_system_type udf_fstype
= {
115 .owner
= THIS_MODULE
,
118 .kill_sb
= kill_block_super
,
119 .fs_flags
= FS_REQUIRES_DEV
,
122 static struct kmem_cache
*udf_inode_cachep
;
124 static struct inode
*udf_alloc_inode(struct super_block
*sb
)
126 struct udf_inode_info
*ei
;
127 ei
= kmem_cache_alloc(udf_inode_cachep
, GFP_KERNEL
);
132 ei
->i_lenExtents
= 0;
133 ei
->i_next_alloc_block
= 0;
134 ei
->i_next_alloc_goal
= 0;
136 init_rwsem(&ei
->i_data_sem
);
138 return &ei
->vfs_inode
;
141 static void udf_i_callback(struct rcu_head
*head
)
143 struct inode
*inode
= container_of(head
, struct inode
, i_rcu
);
144 kmem_cache_free(udf_inode_cachep
, UDF_I(inode
));
147 static void udf_destroy_inode(struct inode
*inode
)
149 call_rcu(&inode
->i_rcu
, udf_i_callback
);
152 static void init_once(void *foo
)
154 struct udf_inode_info
*ei
= (struct udf_inode_info
*)foo
;
156 ei
->i_ext
.i_data
= NULL
;
157 inode_init_once(&ei
->vfs_inode
);
160 static int init_inodecache(void)
162 udf_inode_cachep
= kmem_cache_create("udf_inode_cache",
163 sizeof(struct udf_inode_info
),
164 0, (SLAB_RECLAIM_ACCOUNT
|
167 if (!udf_inode_cachep
)
172 static void destroy_inodecache(void)
175 * Make sure all delayed rcu free inodes are flushed before we
179 kmem_cache_destroy(udf_inode_cachep
);
182 /* Superblock operations */
183 static const struct super_operations udf_sb_ops
= {
184 .alloc_inode
= udf_alloc_inode
,
185 .destroy_inode
= udf_destroy_inode
,
186 .write_inode
= udf_write_inode
,
187 .evict_inode
= udf_evict_inode
,
188 .put_super
= udf_put_super
,
189 .sync_fs
= udf_sync_fs
,
190 .statfs
= udf_statfs
,
191 .remount_fs
= udf_remount_fs
,
192 .show_options
= udf_show_options
,
197 unsigned int blocksize
;
198 unsigned int session
;
199 unsigned int lastblock
;
202 unsigned short partition
;
203 unsigned int fileset
;
204 unsigned int rootdir
;
211 struct nls_table
*nls_map
;
214 static int __init
init_udf_fs(void)
218 err
= init_inodecache();
221 err
= register_filesystem(&udf_fstype
);
228 destroy_inodecache();
234 static void __exit
exit_udf_fs(void)
236 unregister_filesystem(&udf_fstype
);
237 destroy_inodecache();
240 module_init(init_udf_fs
)
241 module_exit(exit_udf_fs
)
243 static int udf_sb_alloc_partition_maps(struct super_block
*sb
, u32 count
)
245 struct udf_sb_info
*sbi
= UDF_SB(sb
);
247 sbi
->s_partmaps
= kcalloc(count
, sizeof(struct udf_part_map
),
249 if (!sbi
->s_partmaps
) {
250 udf_err(sb
, "Unable to allocate space for %d partition maps\n",
252 sbi
->s_partitions
= 0;
256 sbi
->s_partitions
= count
;
260 static void udf_sb_free_bitmap(struct udf_bitmap
*bitmap
)
263 int nr_groups
= bitmap
->s_nr_groups
;
264 int size
= sizeof(struct udf_bitmap
) + (sizeof(struct buffer_head
*) *
267 for (i
= 0; i
< nr_groups
; i
++)
268 if (bitmap
->s_block_bitmap
[i
])
269 brelse(bitmap
->s_block_bitmap
[i
]);
271 if (size
<= PAGE_SIZE
)
277 static void udf_free_partition(struct udf_part_map
*map
)
280 struct udf_meta_data
*mdata
;
282 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
)
283 iput(map
->s_uspace
.s_table
);
284 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
)
285 iput(map
->s_fspace
.s_table
);
286 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
)
287 udf_sb_free_bitmap(map
->s_uspace
.s_bitmap
);
288 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
)
289 udf_sb_free_bitmap(map
->s_fspace
.s_bitmap
);
290 if (map
->s_partition_type
== UDF_SPARABLE_MAP15
)
291 for (i
= 0; i
< 4; i
++)
292 brelse(map
->s_type_specific
.s_sparing
.s_spar_map
[i
]);
293 else if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
294 mdata
= &map
->s_type_specific
.s_metadata
;
295 iput(mdata
->s_metadata_fe
);
296 mdata
->s_metadata_fe
= NULL
;
298 iput(mdata
->s_mirror_fe
);
299 mdata
->s_mirror_fe
= NULL
;
301 iput(mdata
->s_bitmap_fe
);
302 mdata
->s_bitmap_fe
= NULL
;
306 static void udf_sb_free_partitions(struct super_block
*sb
)
308 struct udf_sb_info
*sbi
= UDF_SB(sb
);
310 if (sbi
->s_partmaps
== NULL
)
312 for (i
= 0; i
< sbi
->s_partitions
; i
++)
313 udf_free_partition(&sbi
->s_partmaps
[i
]);
314 kfree(sbi
->s_partmaps
);
315 sbi
->s_partmaps
= NULL
;
318 static int udf_show_options(struct seq_file
*seq
, struct dentry
*root
)
320 struct super_block
*sb
= root
->d_sb
;
321 struct udf_sb_info
*sbi
= UDF_SB(sb
);
323 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_STRICT
))
324 seq_puts(seq
, ",nostrict");
325 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_BLOCKSIZE_SET
))
326 seq_printf(seq
, ",bs=%lu", sb
->s_blocksize
);
327 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNHIDE
))
328 seq_puts(seq
, ",unhide");
329 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNDELETE
))
330 seq_puts(seq
, ",undelete");
331 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_AD_IN_ICB
))
332 seq_puts(seq
, ",noadinicb");
333 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_SHORT_AD
))
334 seq_puts(seq
, ",shortad");
335 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_FORGET
))
336 seq_puts(seq
, ",uid=forget");
337 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_IGNORE
))
338 seq_puts(seq
, ",uid=ignore");
339 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_FORGET
))
340 seq_puts(seq
, ",gid=forget");
341 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_IGNORE
))
342 seq_puts(seq
, ",gid=ignore");
343 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_SET
))
344 seq_printf(seq
, ",uid=%u", from_kuid(&init_user_ns
, sbi
->s_uid
));
345 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_SET
))
346 seq_printf(seq
, ",gid=%u", from_kgid(&init_user_ns
, sbi
->s_gid
));
347 if (sbi
->s_umask
!= 0)
348 seq_printf(seq
, ",umask=%ho", sbi
->s_umask
);
349 if (sbi
->s_fmode
!= UDF_INVALID_MODE
)
350 seq_printf(seq
, ",mode=%ho", sbi
->s_fmode
);
351 if (sbi
->s_dmode
!= UDF_INVALID_MODE
)
352 seq_printf(seq
, ",dmode=%ho", sbi
->s_dmode
);
353 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_SESSION_SET
))
354 seq_printf(seq
, ",session=%u", sbi
->s_session
);
355 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_LASTBLOCK_SET
))
356 seq_printf(seq
, ",lastblock=%u", sbi
->s_last_block
);
357 if (sbi
->s_anchor
!= 0)
358 seq_printf(seq
, ",anchor=%u", sbi
->s_anchor
);
360 * volume, partition, fileset and rootdir seem to be ignored
363 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UTF8
))
364 seq_puts(seq
, ",utf8");
365 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
) && sbi
->s_nls_map
)
366 seq_printf(seq
, ",iocharset=%s", sbi
->s_nls_map
->charset
);
375 * Parse mount options.
378 * The following mount options are supported:
380 * gid= Set the default group.
381 * umask= Set the default umask.
382 * mode= Set the default file permissions.
383 * dmode= Set the default directory permissions.
384 * uid= Set the default user.
385 * bs= Set the block size.
386 * unhide Show otherwise hidden files.
387 * undelete Show deleted files in lists.
388 * adinicb Embed data in the inode (default)
389 * noadinicb Don't embed data in the inode
390 * shortad Use short ad's
391 * longad Use long ad's (default)
392 * nostrict Unset strict conformance
393 * iocharset= Set the NLS character set
395 * The remaining are for debugging and disaster recovery:
397 * novrs Skip volume sequence recognition
399 * The following expect a offset from 0.
401 * session= Set the CDROM session (default= last session)
402 * anchor= Override standard anchor location. (default= 256)
403 * volume= Override the VolumeDesc location. (unused)
404 * partition= Override the PartitionDesc location. (unused)
405 * lastblock= Set the last block of the filesystem/
407 * The following expect a offset from the partition root.
409 * fileset= Override the fileset block location. (unused)
410 * rootdir= Override the root directory location. (unused)
411 * WARNING: overriding the rootdir to a non-directory may
412 * yield highly unpredictable results.
415 * options Pointer to mount options string.
416 * uopts Pointer to mount options variable.
419 * <return> 1 Mount options parsed okay.
420 * <return> 0 Error parsing mount options.
423 * July 1, 1997 - Andrew E. Mileski
424 * Written, tested, and released.
428 Opt_novrs
, Opt_nostrict
, Opt_bs
, Opt_unhide
, Opt_undelete
,
429 Opt_noadinicb
, Opt_adinicb
, Opt_shortad
, Opt_longad
,
430 Opt_gid
, Opt_uid
, Opt_umask
, Opt_session
, Opt_lastblock
,
431 Opt_anchor
, Opt_volume
, Opt_partition
, Opt_fileset
,
432 Opt_rootdir
, Opt_utf8
, Opt_iocharset
,
433 Opt_err
, Opt_uforget
, Opt_uignore
, Opt_gforget
, Opt_gignore
,
437 static const match_table_t tokens
= {
438 {Opt_novrs
, "novrs"},
439 {Opt_nostrict
, "nostrict"},
441 {Opt_unhide
, "unhide"},
442 {Opt_undelete
, "undelete"},
443 {Opt_noadinicb
, "noadinicb"},
444 {Opt_adinicb
, "adinicb"},
445 {Opt_shortad
, "shortad"},
446 {Opt_longad
, "longad"},
447 {Opt_uforget
, "uid=forget"},
448 {Opt_uignore
, "uid=ignore"},
449 {Opt_gforget
, "gid=forget"},
450 {Opt_gignore
, "gid=ignore"},
453 {Opt_umask
, "umask=%o"},
454 {Opt_session
, "session=%u"},
455 {Opt_lastblock
, "lastblock=%u"},
456 {Opt_anchor
, "anchor=%u"},
457 {Opt_volume
, "volume=%u"},
458 {Opt_partition
, "partition=%u"},
459 {Opt_fileset
, "fileset=%u"},
460 {Opt_rootdir
, "rootdir=%u"},
462 {Opt_iocharset
, "iocharset=%s"},
463 {Opt_fmode
, "mode=%o"},
464 {Opt_dmode
, "dmode=%o"},
468 static int udf_parse_options(char *options
, struct udf_options
*uopt
,
475 uopt
->partition
= 0xFFFF;
476 uopt
->session
= 0xFFFFFFFF;
479 uopt
->volume
= 0xFFFFFFFF;
480 uopt
->rootdir
= 0xFFFFFFFF;
481 uopt
->fileset
= 0xFFFFFFFF;
482 uopt
->nls_map
= NULL
;
487 while ((p
= strsep(&options
, ",")) != NULL
) {
488 substring_t args
[MAX_OPT_ARGS
];
493 token
= match_token(p
, tokens
, args
);
499 if (match_int(&args
[0], &option
))
501 uopt
->blocksize
= option
;
502 uopt
->flags
|= (1 << UDF_FLAG_BLOCKSIZE_SET
);
505 uopt
->flags
|= (1 << UDF_FLAG_UNHIDE
);
508 uopt
->flags
|= (1 << UDF_FLAG_UNDELETE
);
511 uopt
->flags
&= ~(1 << UDF_FLAG_USE_AD_IN_ICB
);
514 uopt
->flags
|= (1 << UDF_FLAG_USE_AD_IN_ICB
);
517 uopt
->flags
|= (1 << UDF_FLAG_USE_SHORT_AD
);
520 uopt
->flags
&= ~(1 << UDF_FLAG_USE_SHORT_AD
);
523 if (match_int(args
, &option
))
525 uopt
->gid
= make_kgid(current_user_ns(), option
);
526 if (!gid_valid(uopt
->gid
))
528 uopt
->flags
|= (1 << UDF_FLAG_GID_SET
);
531 if (match_int(args
, &option
))
533 uopt
->uid
= make_kuid(current_user_ns(), option
);
534 if (!uid_valid(uopt
->uid
))
536 uopt
->flags
|= (1 << UDF_FLAG_UID_SET
);
539 if (match_octal(args
, &option
))
541 uopt
->umask
= option
;
544 uopt
->flags
&= ~(1 << UDF_FLAG_STRICT
);
547 if (match_int(args
, &option
))
549 uopt
->session
= option
;
551 uopt
->flags
|= (1 << UDF_FLAG_SESSION_SET
);
554 if (match_int(args
, &option
))
556 uopt
->lastblock
= option
;
558 uopt
->flags
|= (1 << UDF_FLAG_LASTBLOCK_SET
);
561 if (match_int(args
, &option
))
563 uopt
->anchor
= option
;
566 if (match_int(args
, &option
))
568 uopt
->volume
= option
;
571 if (match_int(args
, &option
))
573 uopt
->partition
= option
;
576 if (match_int(args
, &option
))
578 uopt
->fileset
= option
;
581 if (match_int(args
, &option
))
583 uopt
->rootdir
= option
;
586 uopt
->flags
|= (1 << UDF_FLAG_UTF8
);
588 #ifdef CONFIG_UDF_NLS
590 uopt
->nls_map
= load_nls(args
[0].from
);
591 uopt
->flags
|= (1 << UDF_FLAG_NLS_MAP
);
595 uopt
->flags
|= (1 << UDF_FLAG_UID_IGNORE
);
598 uopt
->flags
|= (1 << UDF_FLAG_UID_FORGET
);
601 uopt
->flags
|= (1 << UDF_FLAG_GID_IGNORE
);
604 uopt
->flags
|= (1 << UDF_FLAG_GID_FORGET
);
607 if (match_octal(args
, &option
))
609 uopt
->fmode
= option
& 0777;
612 if (match_octal(args
, &option
))
614 uopt
->dmode
= option
& 0777;
617 pr_err("bad mount option \"%s\" or missing value\n", p
);
624 static int udf_remount_fs(struct super_block
*sb
, int *flags
, char *options
)
626 struct udf_options uopt
;
627 struct udf_sb_info
*sbi
= UDF_SB(sb
);
630 uopt
.flags
= sbi
->s_flags
;
631 uopt
.uid
= sbi
->s_uid
;
632 uopt
.gid
= sbi
->s_gid
;
633 uopt
.umask
= sbi
->s_umask
;
634 uopt
.fmode
= sbi
->s_fmode
;
635 uopt
.dmode
= sbi
->s_dmode
;
637 if (!udf_parse_options(options
, &uopt
, true))
640 write_lock(&sbi
->s_cred_lock
);
641 sbi
->s_flags
= uopt
.flags
;
642 sbi
->s_uid
= uopt
.uid
;
643 sbi
->s_gid
= uopt
.gid
;
644 sbi
->s_umask
= uopt
.umask
;
645 sbi
->s_fmode
= uopt
.fmode
;
646 sbi
->s_dmode
= uopt
.dmode
;
647 write_unlock(&sbi
->s_cred_lock
);
649 if (sbi
->s_lvid_bh
) {
650 int write_rev
= le16_to_cpu(udf_sb_lvidiu(sbi
)->minUDFWriteRev
);
651 if (write_rev
> UDF_MAX_WRITE_VERSION
)
655 if ((*flags
& MS_RDONLY
) == (sb
->s_flags
& MS_RDONLY
))
658 if (*flags
& MS_RDONLY
)
667 /* Check Volume Structure Descriptors (ECMA 167 2/9.1) */
668 /* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
669 static loff_t
udf_check_vsd(struct super_block
*sb
)
671 struct volStructDesc
*vsd
= NULL
;
672 loff_t sector
= 32768;
674 struct buffer_head
*bh
= NULL
;
677 struct udf_sb_info
*sbi
;
680 if (sb
->s_blocksize
< sizeof(struct volStructDesc
))
681 sectorsize
= sizeof(struct volStructDesc
);
683 sectorsize
= sb
->s_blocksize
;
685 sector
+= (sbi
->s_session
<< sb
->s_blocksize_bits
);
687 udf_debug("Starting at sector %u (%ld byte sectors)\n",
688 (unsigned int)(sector
>> sb
->s_blocksize_bits
),
690 /* Process the sequence (if applicable) */
691 for (; !nsr02
&& !nsr03
; sector
+= sectorsize
) {
693 bh
= udf_tread(sb
, sector
>> sb
->s_blocksize_bits
);
697 /* Look for ISO descriptors */
698 vsd
= (struct volStructDesc
*)(bh
->b_data
+
699 (sector
& (sb
->s_blocksize
- 1)));
701 if (vsd
->stdIdent
[0] == 0) {
704 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_CD001
,
706 switch (vsd
->structType
) {
708 udf_debug("ISO9660 Boot Record found\n");
711 udf_debug("ISO9660 Primary Volume Descriptor found\n");
714 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
717 udf_debug("ISO9660 Volume Partition Descriptor found\n");
720 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
723 udf_debug("ISO9660 VRS (%u) found\n",
727 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_BEA01
,
730 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_TEA01
,
734 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR02
,
737 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR03
,
747 else if (sector
- (sbi
->s_session
<< sb
->s_blocksize_bits
) == 32768)
753 static int udf_find_fileset(struct super_block
*sb
,
754 struct kernel_lb_addr
*fileset
,
755 struct kernel_lb_addr
*root
)
757 struct buffer_head
*bh
= NULL
;
760 struct udf_sb_info
*sbi
;
762 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
763 fileset
->partitionReferenceNum
!= 0xFFFF) {
764 bh
= udf_read_ptagged(sb
, fileset
, 0, &ident
);
768 } else if (ident
!= TAG_IDENT_FSD
) {
777 /* Search backwards through the partitions */
778 struct kernel_lb_addr newfileset
;
780 /* --> cvg: FIXME - is it reasonable? */
783 for (newfileset
.partitionReferenceNum
= sbi
->s_partitions
- 1;
784 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
785 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
786 fileset
->partitionReferenceNum
== 0xFFFF);
787 newfileset
.partitionReferenceNum
--) {
788 lastblock
= sbi
->s_partmaps
789 [newfileset
.partitionReferenceNum
]
791 newfileset
.logicalBlockNum
= 0;
794 bh
= udf_read_ptagged(sb
, &newfileset
, 0,
797 newfileset
.logicalBlockNum
++;
804 struct spaceBitmapDesc
*sp
;
805 sp
= (struct spaceBitmapDesc
*)
807 newfileset
.logicalBlockNum
+= 1 +
808 ((le32_to_cpu(sp
->numOfBytes
) +
809 sizeof(struct spaceBitmapDesc
)
810 - 1) >> sb
->s_blocksize_bits
);
815 *fileset
= newfileset
;
818 newfileset
.logicalBlockNum
++;
823 } while (newfileset
.logicalBlockNum
< lastblock
&&
824 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
825 fileset
->partitionReferenceNum
== 0xFFFF);
829 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
830 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
) {
831 udf_debug("Fileset at block=%d, partition=%d\n",
832 fileset
->logicalBlockNum
,
833 fileset
->partitionReferenceNum
);
835 sbi
->s_partition
= fileset
->partitionReferenceNum
;
836 udf_load_fileset(sb
, bh
, root
);
843 static int udf_load_pvoldesc(struct super_block
*sb
, sector_t block
)
845 struct primaryVolDesc
*pvoldesc
;
846 struct ustr
*instr
, *outstr
;
847 struct buffer_head
*bh
;
851 instr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
855 outstr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
859 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
863 BUG_ON(ident
!= TAG_IDENT_PVD
);
865 pvoldesc
= (struct primaryVolDesc
*)bh
->b_data
;
867 if (udf_disk_stamp_to_time(&UDF_SB(sb
)->s_record_time
,
868 pvoldesc
->recordingDateAndTime
)) {
870 struct timestamp
*ts
= &pvoldesc
->recordingDateAndTime
;
871 udf_debug("recording time %04u/%02u/%02u %02u:%02u (%x)\n",
872 le16_to_cpu(ts
->year
), ts
->month
, ts
->day
, ts
->hour
,
873 ts
->minute
, le16_to_cpu(ts
->typeAndTimezone
));
877 if (!udf_build_ustr(instr
, pvoldesc
->volIdent
, 32))
878 if (udf_CS0toUTF8(outstr
, instr
)) {
879 strncpy(UDF_SB(sb
)->s_volume_ident
, outstr
->u_name
,
880 outstr
->u_len
> 31 ? 31 : outstr
->u_len
);
881 udf_debug("volIdent[] = '%s'\n",
882 UDF_SB(sb
)->s_volume_ident
);
885 if (!udf_build_ustr(instr
, pvoldesc
->volSetIdent
, 128))
886 if (udf_CS0toUTF8(outstr
, instr
))
887 udf_debug("volSetIdent[] = '%s'\n", outstr
->u_name
);
898 struct inode
*udf_find_metadata_inode_efe(struct super_block
*sb
,
899 u32 meta_file_loc
, u32 partition_num
)
901 struct kernel_lb_addr addr
;
902 struct inode
*metadata_fe
;
904 addr
.logicalBlockNum
= meta_file_loc
;
905 addr
.partitionReferenceNum
= partition_num
;
907 metadata_fe
= udf_iget(sb
, &addr
);
909 if (metadata_fe
== NULL
)
910 udf_warn(sb
, "metadata inode efe not found\n");
911 else if (UDF_I(metadata_fe
)->i_alloc_type
!= ICBTAG_FLAG_AD_SHORT
) {
912 udf_warn(sb
, "metadata inode efe does not have short allocation descriptors!\n");
920 static int udf_load_metadata_files(struct super_block
*sb
, int partition
)
922 struct udf_sb_info
*sbi
= UDF_SB(sb
);
923 struct udf_part_map
*map
;
924 struct udf_meta_data
*mdata
;
925 struct kernel_lb_addr addr
;
927 map
= &sbi
->s_partmaps
[partition
];
928 mdata
= &map
->s_type_specific
.s_metadata
;
930 /* metadata address */
931 udf_debug("Metadata file location: block = %d part = %d\n",
932 mdata
->s_meta_file_loc
, map
->s_partition_num
);
934 mdata
->s_metadata_fe
= udf_find_metadata_inode_efe(sb
,
935 mdata
->s_meta_file_loc
, map
->s_partition_num
);
937 if (mdata
->s_metadata_fe
== NULL
) {
938 /* mirror file entry */
939 udf_debug("Mirror metadata file location: block = %d part = %d\n",
940 mdata
->s_mirror_file_loc
, map
->s_partition_num
);
942 mdata
->s_mirror_fe
= udf_find_metadata_inode_efe(sb
,
943 mdata
->s_mirror_file_loc
, map
->s_partition_num
);
945 if (mdata
->s_mirror_fe
== NULL
) {
946 udf_err(sb
, "Both metadata and mirror metadata inode efe can not found\n");
954 * Load only if bitmap file location differs from 0xFFFFFFFF (DCN-5102)
956 if (mdata
->s_bitmap_file_loc
!= 0xFFFFFFFF) {
957 addr
.logicalBlockNum
= mdata
->s_bitmap_file_loc
;
958 addr
.partitionReferenceNum
= map
->s_partition_num
;
960 udf_debug("Bitmap file location: block = %d part = %d\n",
961 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
963 mdata
->s_bitmap_fe
= udf_iget(sb
, &addr
);
965 if (mdata
->s_bitmap_fe
== NULL
) {
966 if (sb
->s_flags
& MS_RDONLY
)
967 udf_warn(sb
, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n");
969 udf_err(sb
, "bitmap inode efe not found and attempted read-write mount\n");
975 udf_debug("udf_load_metadata_files Ok\n");
983 static void udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
,
984 struct kernel_lb_addr
*root
)
986 struct fileSetDesc
*fset
;
988 fset
= (struct fileSetDesc
*)bh
->b_data
;
990 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
992 UDF_SB(sb
)->s_serial_number
= le16_to_cpu(fset
->descTag
.tagSerialNum
);
994 udf_debug("Rootdir at block=%d, partition=%d\n",
995 root
->logicalBlockNum
, root
->partitionReferenceNum
);
998 int udf_compute_nr_groups(struct super_block
*sb
, u32 partition
)
1000 struct udf_part_map
*map
= &UDF_SB(sb
)->s_partmaps
[partition
];
1001 return DIV_ROUND_UP(map
->s_partition_len
+
1002 (sizeof(struct spaceBitmapDesc
) << 3),
1003 sb
->s_blocksize
* 8);
1006 static struct udf_bitmap
*udf_sb_alloc_bitmap(struct super_block
*sb
, u32 index
)
1008 struct udf_bitmap
*bitmap
;
1012 nr_groups
= udf_compute_nr_groups(sb
, index
);
1013 size
= sizeof(struct udf_bitmap
) +
1014 (sizeof(struct buffer_head
*) * nr_groups
);
1016 if (size
<= PAGE_SIZE
)
1017 bitmap
= kzalloc(size
, GFP_KERNEL
);
1019 bitmap
= vzalloc(size
); /* TODO: get rid of vzalloc */
1024 bitmap
->s_block_bitmap
= (struct buffer_head
**)(bitmap
+ 1);
1025 bitmap
->s_nr_groups
= nr_groups
;
1029 static int udf_fill_partdesc_info(struct super_block
*sb
,
1030 struct partitionDesc
*p
, int p_index
)
1032 struct udf_part_map
*map
;
1033 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1034 struct partitionHeaderDesc
*phd
;
1036 map
= &sbi
->s_partmaps
[p_index
];
1038 map
->s_partition_len
= le32_to_cpu(p
->partitionLength
); /* blocks */
1039 map
->s_partition_root
= le32_to_cpu(p
->partitionStartingLocation
);
1041 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY
))
1042 map
->s_partition_flags
|= UDF_PART_FLAG_READ_ONLY
;
1043 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE
))
1044 map
->s_partition_flags
|= UDF_PART_FLAG_WRITE_ONCE
;
1045 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE
))
1046 map
->s_partition_flags
|= UDF_PART_FLAG_REWRITABLE
;
1047 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE
))
1048 map
->s_partition_flags
|= UDF_PART_FLAG_OVERWRITABLE
;
1050 udf_debug("Partition (%d type %x) starts at physical %d, block length %d\n",
1051 p_index
, map
->s_partition_type
,
1052 map
->s_partition_root
, map
->s_partition_len
);
1054 if (strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR02
) &&
1055 strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR03
))
1058 phd
= (struct partitionHeaderDesc
*)p
->partitionContentsUse
;
1059 if (phd
->unallocSpaceTable
.extLength
) {
1060 struct kernel_lb_addr loc
= {
1061 .logicalBlockNum
= le32_to_cpu(
1062 phd
->unallocSpaceTable
.extPosition
),
1063 .partitionReferenceNum
= p_index
,
1066 map
->s_uspace
.s_table
= udf_iget(sb
, &loc
);
1067 if (!map
->s_uspace
.s_table
) {
1068 udf_debug("cannot load unallocSpaceTable (part %d)\n",
1072 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_TABLE
;
1073 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1074 p_index
, map
->s_uspace
.s_table
->i_ino
);
1077 if (phd
->unallocSpaceBitmap
.extLength
) {
1078 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1081 map
->s_uspace
.s_bitmap
= bitmap
;
1082 bitmap
->s_extLength
= le32_to_cpu(
1083 phd
->unallocSpaceBitmap
.extLength
);
1084 bitmap
->s_extPosition
= le32_to_cpu(
1085 phd
->unallocSpaceBitmap
.extPosition
);
1086 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_BITMAP
;
1087 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
1088 p_index
, bitmap
->s_extPosition
);
1091 if (phd
->partitionIntegrityTable
.extLength
)
1092 udf_debug("partitionIntegrityTable (part %d)\n", p_index
);
1094 if (phd
->freedSpaceTable
.extLength
) {
1095 struct kernel_lb_addr loc
= {
1096 .logicalBlockNum
= le32_to_cpu(
1097 phd
->freedSpaceTable
.extPosition
),
1098 .partitionReferenceNum
= p_index
,
1101 map
->s_fspace
.s_table
= udf_iget(sb
, &loc
);
1102 if (!map
->s_fspace
.s_table
) {
1103 udf_debug("cannot load freedSpaceTable (part %d)\n",
1108 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_TABLE
;
1109 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1110 p_index
, map
->s_fspace
.s_table
->i_ino
);
1113 if (phd
->freedSpaceBitmap
.extLength
) {
1114 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1117 map
->s_fspace
.s_bitmap
= bitmap
;
1118 bitmap
->s_extLength
= le32_to_cpu(
1119 phd
->freedSpaceBitmap
.extLength
);
1120 bitmap
->s_extPosition
= le32_to_cpu(
1121 phd
->freedSpaceBitmap
.extPosition
);
1122 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_BITMAP
;
1123 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1124 p_index
, bitmap
->s_extPosition
);
1129 static void udf_find_vat_block(struct super_block
*sb
, int p_index
,
1130 int type1_index
, sector_t start_block
)
1132 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1133 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1135 struct kernel_lb_addr ino
;
1138 * VAT file entry is in the last recorded block. Some broken disks have
1139 * it a few blocks before so try a bit harder...
1141 ino
.partitionReferenceNum
= type1_index
;
1142 for (vat_block
= start_block
;
1143 vat_block
>= map
->s_partition_root
&&
1144 vat_block
>= start_block
- 3 &&
1145 !sbi
->s_vat_inode
; vat_block
--) {
1146 ino
.logicalBlockNum
= vat_block
- map
->s_partition_root
;
1147 sbi
->s_vat_inode
= udf_iget(sb
, &ino
);
1151 static int udf_load_vat(struct super_block
*sb
, int p_index
, int type1_index
)
1153 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1154 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1155 struct buffer_head
*bh
= NULL
;
1156 struct udf_inode_info
*vati
;
1158 struct virtualAllocationTable20
*vat20
;
1159 sector_t blocks
= sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
;
1161 udf_find_vat_block(sb
, p_index
, type1_index
, sbi
->s_last_block
);
1162 if (!sbi
->s_vat_inode
&&
1163 sbi
->s_last_block
!= blocks
- 1) {
1164 pr_notice("Failed to read VAT inode from the last recorded block (%lu), retrying with the last block of the device (%lu).\n",
1165 (unsigned long)sbi
->s_last_block
,
1166 (unsigned long)blocks
- 1);
1167 udf_find_vat_block(sb
, p_index
, type1_index
, blocks
- 1);
1169 if (!sbi
->s_vat_inode
)
1172 if (map
->s_partition_type
== UDF_VIRTUAL_MAP15
) {
1173 map
->s_type_specific
.s_virtual
.s_start_offset
= 0;
1174 map
->s_type_specific
.s_virtual
.s_num_entries
=
1175 (sbi
->s_vat_inode
->i_size
- 36) >> 2;
1176 } else if (map
->s_partition_type
== UDF_VIRTUAL_MAP20
) {
1177 vati
= UDF_I(sbi
->s_vat_inode
);
1178 if (vati
->i_alloc_type
!= ICBTAG_FLAG_AD_IN_ICB
) {
1179 pos
= udf_block_map(sbi
->s_vat_inode
, 0);
1180 bh
= sb_bread(sb
, pos
);
1183 vat20
= (struct virtualAllocationTable20
*)bh
->b_data
;
1185 vat20
= (struct virtualAllocationTable20
*)
1189 map
->s_type_specific
.s_virtual
.s_start_offset
=
1190 le16_to_cpu(vat20
->lengthHeader
);
1191 map
->s_type_specific
.s_virtual
.s_num_entries
=
1192 (sbi
->s_vat_inode
->i_size
-
1193 map
->s_type_specific
.s_virtual
.
1194 s_start_offset
) >> 2;
1200 static int udf_load_partdesc(struct super_block
*sb
, sector_t block
)
1202 struct buffer_head
*bh
;
1203 struct partitionDesc
*p
;
1204 struct udf_part_map
*map
;
1205 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1207 uint16_t partitionNumber
;
1211 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1214 if (ident
!= TAG_IDENT_PD
)
1217 p
= (struct partitionDesc
*)bh
->b_data
;
1218 partitionNumber
= le16_to_cpu(p
->partitionNumber
);
1220 /* First scan for TYPE1, SPARABLE and METADATA partitions */
1221 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1222 map
= &sbi
->s_partmaps
[i
];
1223 udf_debug("Searching map: (%d == %d)\n",
1224 map
->s_partition_num
, partitionNumber
);
1225 if (map
->s_partition_num
== partitionNumber
&&
1226 (map
->s_partition_type
== UDF_TYPE1_MAP15
||
1227 map
->s_partition_type
== UDF_SPARABLE_MAP15
))
1231 if (i
>= sbi
->s_partitions
) {
1232 udf_debug("Partition (%d) not found in partition map\n",
1237 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1240 * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and
1241 * PHYSICAL partitions are already set up
1244 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1245 map
= &sbi
->s_partmaps
[i
];
1247 if (map
->s_partition_num
== partitionNumber
&&
1248 (map
->s_partition_type
== UDF_VIRTUAL_MAP15
||
1249 map
->s_partition_type
== UDF_VIRTUAL_MAP20
||
1250 map
->s_partition_type
== UDF_METADATA_MAP25
))
1254 if (i
>= sbi
->s_partitions
)
1257 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1261 if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
1262 ret
= udf_load_metadata_files(sb
, i
);
1264 udf_err(sb
, "error loading MetaData partition map %d\n",
1269 ret
= udf_load_vat(sb
, i
, type1_idx
);
1273 * Mark filesystem read-only if we have a partition with
1274 * virtual map since we don't handle writing to it (we
1275 * overwrite blocks instead of relocating them).
1277 sb
->s_flags
|= MS_RDONLY
;
1278 pr_notice("Filesystem marked read-only because writing to pseudooverwrite partition is not implemented\n");
1281 /* In case loading failed, we handle cleanup in udf_fill_super */
1286 static int udf_load_sparable_map(struct super_block
*sb
,
1287 struct udf_part_map
*map
,
1288 struct sparablePartitionMap
*spm
)
1292 struct sparingTable
*st
;
1293 struct udf_sparing_data
*sdata
= &map
->s_type_specific
.s_sparing
;
1295 struct buffer_head
*bh
;
1297 map
->s_partition_type
= UDF_SPARABLE_MAP15
;
1298 sdata
->s_packet_len
= le16_to_cpu(spm
->packetLength
);
1299 if (!is_power_of_2(sdata
->s_packet_len
)) {
1300 udf_err(sb
, "error loading logical volume descriptor: "
1301 "Invalid packet length %u\n",
1302 (unsigned)sdata
->s_packet_len
);
1305 if (spm
->numSparingTables
> 4) {
1306 udf_err(sb
, "error loading logical volume descriptor: "
1307 "Too many sparing tables (%d)\n",
1308 (int)spm
->numSparingTables
);
1312 for (i
= 0; i
< spm
->numSparingTables
; i
++) {
1313 loc
= le32_to_cpu(spm
->locSparingTable
[i
]);
1314 bh
= udf_read_tagged(sb
, loc
, loc
, &ident
);
1318 st
= (struct sparingTable
*)bh
->b_data
;
1320 strncmp(st
->sparingIdent
.ident
, UDF_ID_SPARING
,
1321 strlen(UDF_ID_SPARING
)) ||
1322 sizeof(*st
) + le16_to_cpu(st
->reallocationTableLen
) >
1328 sdata
->s_spar_map
[i
] = bh
;
1330 map
->s_partition_func
= udf_get_pblock_spar15
;
1334 static int udf_load_logicalvol(struct super_block
*sb
, sector_t block
,
1335 struct kernel_lb_addr
*fileset
)
1337 struct logicalVolDesc
*lvd
;
1340 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1341 struct genericPartitionMap
*gpm
;
1343 struct buffer_head
*bh
;
1344 unsigned int table_len
;
1347 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1350 BUG_ON(ident
!= TAG_IDENT_LVD
);
1351 lvd
= (struct logicalVolDesc
*)bh
->b_data
;
1352 table_len
= le32_to_cpu(lvd
->mapTableLength
);
1353 if (table_len
> sb
->s_blocksize
- sizeof(*lvd
)) {
1354 udf_err(sb
, "error loading logical volume descriptor: "
1355 "Partition table too long (%u > %lu)\n", table_len
,
1356 sb
->s_blocksize
- sizeof(*lvd
));
1361 ret
= udf_sb_alloc_partition_maps(sb
, le32_to_cpu(lvd
->numPartitionMaps
));
1365 for (i
= 0, offset
= 0;
1366 i
< sbi
->s_partitions
&& offset
< table_len
;
1367 i
++, offset
+= gpm
->partitionMapLength
) {
1368 struct udf_part_map
*map
= &sbi
->s_partmaps
[i
];
1369 gpm
= (struct genericPartitionMap
*)
1370 &(lvd
->partitionMaps
[offset
]);
1371 type
= gpm
->partitionMapType
;
1373 struct genericPartitionMap1
*gpm1
=
1374 (struct genericPartitionMap1
*)gpm
;
1375 map
->s_partition_type
= UDF_TYPE1_MAP15
;
1376 map
->s_volumeseqnum
= le16_to_cpu(gpm1
->volSeqNum
);
1377 map
->s_partition_num
= le16_to_cpu(gpm1
->partitionNum
);
1378 map
->s_partition_func
= NULL
;
1379 } else if (type
== 2) {
1380 struct udfPartitionMap2
*upm2
=
1381 (struct udfPartitionMap2
*)gpm
;
1382 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
,
1383 strlen(UDF_ID_VIRTUAL
))) {
1385 le16_to_cpu(((__le16
*)upm2
->partIdent
.
1388 map
->s_partition_type
=
1390 map
->s_partition_func
=
1391 udf_get_pblock_virt15
;
1393 map
->s_partition_type
=
1395 map
->s_partition_func
=
1396 udf_get_pblock_virt20
;
1398 } else if (!strncmp(upm2
->partIdent
.ident
,
1400 strlen(UDF_ID_SPARABLE
))) {
1401 if (udf_load_sparable_map(sb
, map
,
1402 (struct sparablePartitionMap
*)gpm
) < 0) {
1406 } else if (!strncmp(upm2
->partIdent
.ident
,
1408 strlen(UDF_ID_METADATA
))) {
1409 struct udf_meta_data
*mdata
=
1410 &map
->s_type_specific
.s_metadata
;
1411 struct metadataPartitionMap
*mdm
=
1412 (struct metadataPartitionMap
*)
1413 &(lvd
->partitionMaps
[offset
]);
1414 udf_debug("Parsing Logical vol part %d type %d id=%s\n",
1415 i
, type
, UDF_ID_METADATA
);
1417 map
->s_partition_type
= UDF_METADATA_MAP25
;
1418 map
->s_partition_func
= udf_get_pblock_meta25
;
1420 mdata
->s_meta_file_loc
=
1421 le32_to_cpu(mdm
->metadataFileLoc
);
1422 mdata
->s_mirror_file_loc
=
1423 le32_to_cpu(mdm
->metadataMirrorFileLoc
);
1424 mdata
->s_bitmap_file_loc
=
1425 le32_to_cpu(mdm
->metadataBitmapFileLoc
);
1426 mdata
->s_alloc_unit_size
=
1427 le32_to_cpu(mdm
->allocUnitSize
);
1428 mdata
->s_align_unit_size
=
1429 le16_to_cpu(mdm
->alignUnitSize
);
1430 if (mdm
->flags
& 0x01)
1431 mdata
->s_flags
|= MF_DUPLICATE_MD
;
1433 udf_debug("Metadata Ident suffix=0x%x\n",
1434 le16_to_cpu(*(__le16
*)
1435 mdm
->partIdent
.identSuffix
));
1436 udf_debug("Metadata part num=%d\n",
1437 le16_to_cpu(mdm
->partitionNum
));
1438 udf_debug("Metadata part alloc unit size=%d\n",
1439 le32_to_cpu(mdm
->allocUnitSize
));
1440 udf_debug("Metadata file loc=%d\n",
1441 le32_to_cpu(mdm
->metadataFileLoc
));
1442 udf_debug("Mirror file loc=%d\n",
1443 le32_to_cpu(mdm
->metadataMirrorFileLoc
));
1444 udf_debug("Bitmap file loc=%d\n",
1445 le32_to_cpu(mdm
->metadataBitmapFileLoc
));
1446 udf_debug("Flags: %d %d\n",
1447 mdata
->s_flags
, mdm
->flags
);
1449 udf_debug("Unknown ident: %s\n",
1450 upm2
->partIdent
.ident
);
1453 map
->s_volumeseqnum
= le16_to_cpu(upm2
->volSeqNum
);
1454 map
->s_partition_num
= le16_to_cpu(upm2
->partitionNum
);
1456 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1457 i
, map
->s_partition_num
, type
, map
->s_volumeseqnum
);
1461 struct long_ad
*la
= (struct long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
1463 *fileset
= lelb_to_cpu(la
->extLocation
);
1464 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1465 fileset
->logicalBlockNum
,
1466 fileset
->partitionReferenceNum
);
1468 if (lvd
->integritySeqExt
.extLength
)
1469 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
1477 * udf_load_logicalvolint
1480 static void udf_load_logicalvolint(struct super_block
*sb
, struct kernel_extent_ad loc
)
1482 struct buffer_head
*bh
= NULL
;
1484 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1485 struct logicalVolIntegrityDesc
*lvid
;
1487 while (loc
.extLength
> 0 &&
1488 (bh
= udf_read_tagged(sb
, loc
.extLocation
,
1489 loc
.extLocation
, &ident
)) &&
1490 ident
== TAG_IDENT_LVID
) {
1491 sbi
->s_lvid_bh
= bh
;
1492 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1494 if (lvid
->nextIntegrityExt
.extLength
)
1495 udf_load_logicalvolint(sb
,
1496 leea_to_cpu(lvid
->nextIntegrityExt
));
1498 if (sbi
->s_lvid_bh
!= bh
)
1500 loc
.extLength
-= sb
->s_blocksize
;
1503 if (sbi
->s_lvid_bh
!= bh
)
1508 * udf_process_sequence
1511 * Process a main/reserve volume descriptor sequence.
1514 * sb Pointer to _locked_ superblock.
1515 * block First block of first extent of the sequence.
1516 * lastblock Lastblock of first extent of the sequence.
1519 * July 1, 1997 - Andrew E. Mileski
1520 * Written, tested, and released.
1522 static noinline
int udf_process_sequence(struct super_block
*sb
, long block
,
1523 long lastblock
, struct kernel_lb_addr
*fileset
)
1525 struct buffer_head
*bh
= NULL
;
1526 struct udf_vds_record vds
[VDS_POS_LENGTH
];
1527 struct udf_vds_record
*curr
;
1528 struct generic_desc
*gd
;
1529 struct volDescPtr
*vdp
;
1533 long next_s
= 0, next_e
= 0;
1535 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
1538 * Read the main descriptor sequence and find which descriptors
1541 for (; (!done
&& block
<= lastblock
); block
++) {
1543 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1546 "Block %llu of volume descriptor sequence is corrupted or we could not read it\n",
1547 (unsigned long long)block
);
1551 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1552 gd
= (struct generic_desc
*)bh
->b_data
;
1553 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
1555 case TAG_IDENT_PVD
: /* ISO 13346 3/10.1 */
1556 curr
= &vds
[VDS_POS_PRIMARY_VOL_DESC
];
1557 if (vdsn
>= curr
->volDescSeqNum
) {
1558 curr
->volDescSeqNum
= vdsn
;
1559 curr
->block
= block
;
1562 case TAG_IDENT_VDP
: /* ISO 13346 3/10.3 */
1563 curr
= &vds
[VDS_POS_VOL_DESC_PTR
];
1564 if (vdsn
>= curr
->volDescSeqNum
) {
1565 curr
->volDescSeqNum
= vdsn
;
1566 curr
->block
= block
;
1568 vdp
= (struct volDescPtr
*)bh
->b_data
;
1569 next_s
= le32_to_cpu(
1570 vdp
->nextVolDescSeqExt
.extLocation
);
1571 next_e
= le32_to_cpu(
1572 vdp
->nextVolDescSeqExt
.extLength
);
1573 next_e
= next_e
>> sb
->s_blocksize_bits
;
1577 case TAG_IDENT_IUVD
: /* ISO 13346 3/10.4 */
1578 curr
= &vds
[VDS_POS_IMP_USE_VOL_DESC
];
1579 if (vdsn
>= curr
->volDescSeqNum
) {
1580 curr
->volDescSeqNum
= vdsn
;
1581 curr
->block
= block
;
1584 case TAG_IDENT_PD
: /* ISO 13346 3/10.5 */
1585 curr
= &vds
[VDS_POS_PARTITION_DESC
];
1587 curr
->block
= block
;
1589 case TAG_IDENT_LVD
: /* ISO 13346 3/10.6 */
1590 curr
= &vds
[VDS_POS_LOGICAL_VOL_DESC
];
1591 if (vdsn
>= curr
->volDescSeqNum
) {
1592 curr
->volDescSeqNum
= vdsn
;
1593 curr
->block
= block
;
1596 case TAG_IDENT_USD
: /* ISO 13346 3/10.8 */
1597 curr
= &vds
[VDS_POS_UNALLOC_SPACE_DESC
];
1598 if (vdsn
>= curr
->volDescSeqNum
) {
1599 curr
->volDescSeqNum
= vdsn
;
1600 curr
->block
= block
;
1603 case TAG_IDENT_TD
: /* ISO 13346 3/10.9 */
1604 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1608 next_s
= next_e
= 0;
1616 * Now read interesting descriptors again and process them
1617 * in a suitable order
1619 if (!vds
[VDS_POS_PRIMARY_VOL_DESC
].block
) {
1620 udf_err(sb
, "Primary Volume Descriptor not found!\n");
1623 if (udf_load_pvoldesc(sb
, vds
[VDS_POS_PRIMARY_VOL_DESC
].block
))
1626 if (vds
[VDS_POS_LOGICAL_VOL_DESC
].block
&& udf_load_logicalvol(sb
,
1627 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
, fileset
))
1630 if (vds
[VDS_POS_PARTITION_DESC
].block
) {
1632 * We rescan the whole descriptor sequence to find
1633 * partition descriptor blocks and process them.
1635 for (block
= vds
[VDS_POS_PARTITION_DESC
].block
;
1636 block
< vds
[VDS_POS_TERMINATING_DESC
].block
;
1638 if (udf_load_partdesc(sb
, block
))
1645 static int udf_load_sequence(struct super_block
*sb
, struct buffer_head
*bh
,
1646 struct kernel_lb_addr
*fileset
)
1648 struct anchorVolDescPtr
*anchor
;
1649 long main_s
, main_e
, reserve_s
, reserve_e
;
1651 anchor
= (struct anchorVolDescPtr
*)bh
->b_data
;
1653 /* Locate the main sequence */
1654 main_s
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLocation
);
1655 main_e
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLength
);
1656 main_e
= main_e
>> sb
->s_blocksize_bits
;
1659 /* Locate the reserve sequence */
1660 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1661 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1662 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1663 reserve_e
+= reserve_s
;
1665 /* Process the main & reserve sequences */
1666 /* responsible for finding the PartitionDesc(s) */
1667 if (!udf_process_sequence(sb
, main_s
, main_e
, fileset
))
1669 udf_sb_free_partitions(sb
);
1670 if (!udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
))
1672 udf_sb_free_partitions(sb
);
1677 * Check whether there is an anchor block in the given block and
1678 * load Volume Descriptor Sequence if so.
1680 static int udf_check_anchor_block(struct super_block
*sb
, sector_t block
,
1681 struct kernel_lb_addr
*fileset
)
1683 struct buffer_head
*bh
;
1687 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_VARCONV
) &&
1688 udf_fixed_to_variable(block
) >=
1689 sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
)
1692 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1695 if (ident
!= TAG_IDENT_AVDP
) {
1699 ret
= udf_load_sequence(sb
, bh
, fileset
);
1704 /* Search for an anchor volume descriptor pointer */
1705 static sector_t
udf_scan_anchors(struct super_block
*sb
, sector_t lastblock
,
1706 struct kernel_lb_addr
*fileset
)
1710 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1713 /* First try user provided anchor */
1714 if (sbi
->s_anchor
) {
1715 if (udf_check_anchor_block(sb
, sbi
->s_anchor
, fileset
))
1719 * according to spec, anchor is in either:
1723 * however, if the disc isn't closed, it could be 512.
1725 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 256, fileset
))
1728 * The trouble is which block is the last one. Drives often misreport
1729 * this so we try various possibilities.
1731 last
[last_count
++] = lastblock
;
1733 last
[last_count
++] = lastblock
- 1;
1734 last
[last_count
++] = lastblock
+ 1;
1736 last
[last_count
++] = lastblock
- 2;
1737 if (lastblock
>= 150)
1738 last
[last_count
++] = lastblock
- 150;
1739 if (lastblock
>= 152)
1740 last
[last_count
++] = lastblock
- 152;
1742 for (i
= 0; i
< last_count
; i
++) {
1743 if (last
[i
] >= sb
->s_bdev
->bd_inode
->i_size
>>
1744 sb
->s_blocksize_bits
)
1746 if (udf_check_anchor_block(sb
, last
[i
], fileset
))
1750 if (udf_check_anchor_block(sb
, last
[i
] - 256, fileset
))
1754 /* Finally try block 512 in case media is open */
1755 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 512, fileset
))
1761 * Find an anchor volume descriptor and load Volume Descriptor Sequence from
1762 * area specified by it. The function expects sbi->s_lastblock to be the last
1763 * block on the media.
1765 * Return 1 if ok, 0 if not found.
1768 static int udf_find_anchor(struct super_block
*sb
,
1769 struct kernel_lb_addr
*fileset
)
1772 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1774 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1778 /* No anchor found? Try VARCONV conversion of block numbers */
1779 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
1780 /* Firstly, we try to not convert number of the last block */
1781 lastblock
= udf_scan_anchors(sb
,
1782 udf_variable_to_fixed(sbi
->s_last_block
),
1787 /* Secondly, we try with converted number of the last block */
1788 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1790 /* VARCONV didn't help. Clear it. */
1791 UDF_CLEAR_FLAG(sb
, UDF_FLAG_VARCONV
);
1795 sbi
->s_last_block
= lastblock
;
1800 * Check Volume Structure Descriptor, find Anchor block and load Volume
1801 * Descriptor Sequence
1803 static int udf_load_vrs(struct super_block
*sb
, struct udf_options
*uopt
,
1804 int silent
, struct kernel_lb_addr
*fileset
)
1806 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1809 if (!sb_set_blocksize(sb
, uopt
->blocksize
)) {
1811 udf_warn(sb
, "Bad block size\n");
1814 sbi
->s_last_block
= uopt
->lastblock
;
1816 /* Check that it is NSR02 compliant */
1817 nsr_off
= udf_check_vsd(sb
);
1820 udf_warn(sb
, "No VRS found\n");
1824 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1825 if (!sbi
->s_last_block
)
1826 sbi
->s_last_block
= udf_get_last_block(sb
);
1828 udf_debug("Validity check skipped because of novrs option\n");
1831 /* Look for anchor block and load Volume Descriptor Sequence */
1832 sbi
->s_anchor
= uopt
->anchor
;
1833 if (!udf_find_anchor(sb
, fileset
)) {
1835 udf_warn(sb
, "No anchor found\n");
1841 static void udf_open_lvid(struct super_block
*sb
)
1843 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1844 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1845 struct logicalVolIntegrityDesc
*lvid
;
1846 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1851 mutex_lock(&sbi
->s_alloc_mutex
);
1852 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1853 lvidiu
= udf_sb_lvidiu(sbi
);
1855 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1856 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1857 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
,
1859 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN
);
1861 lvid
->descTag
.descCRC
= cpu_to_le16(
1862 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1863 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1865 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1866 mark_buffer_dirty(bh
);
1867 sbi
->s_lvid_dirty
= 0;
1868 mutex_unlock(&sbi
->s_alloc_mutex
);
1871 static void udf_close_lvid(struct super_block
*sb
)
1873 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1874 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1875 struct logicalVolIntegrityDesc
*lvid
;
1876 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1881 mutex_lock(&sbi
->s_alloc_mutex
);
1882 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1883 lvidiu
= udf_sb_lvidiu(sbi
);
1884 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1885 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1886 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
, CURRENT_TIME
);
1887 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(lvidiu
->maxUDFWriteRev
))
1888 lvidiu
->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
1889 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFReadRev
))
1890 lvidiu
->minUDFReadRev
= cpu_to_le16(sbi
->s_udfrev
);
1891 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFWriteRev
))
1892 lvidiu
->minUDFWriteRev
= cpu_to_le16(sbi
->s_udfrev
);
1893 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE
);
1895 lvid
->descTag
.descCRC
= cpu_to_le16(
1896 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1897 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1899 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1901 * We set buffer uptodate unconditionally here to avoid spurious
1902 * warnings from mark_buffer_dirty() when previous EIO has marked
1903 * the buffer as !uptodate
1905 set_buffer_uptodate(bh
);
1906 mark_buffer_dirty(bh
);
1907 sbi
->s_lvid_dirty
= 0;
1908 mutex_unlock(&sbi
->s_alloc_mutex
);
1911 u64
lvid_get_unique_id(struct super_block
*sb
)
1913 struct buffer_head
*bh
;
1914 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1915 struct logicalVolIntegrityDesc
*lvid
;
1916 struct logicalVolHeaderDesc
*lvhd
;
1920 bh
= sbi
->s_lvid_bh
;
1924 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1925 lvhd
= (struct logicalVolHeaderDesc
*)lvid
->logicalVolContentsUse
;
1927 mutex_lock(&sbi
->s_alloc_mutex
);
1928 ret
= uniqueID
= le64_to_cpu(lvhd
->uniqueID
);
1929 if (!(++uniqueID
& 0xFFFFFFFF))
1931 lvhd
->uniqueID
= cpu_to_le64(uniqueID
);
1932 mutex_unlock(&sbi
->s_alloc_mutex
);
1933 mark_buffer_dirty(bh
);
1938 static int udf_fill_super(struct super_block
*sb
, void *options
, int silent
)
1941 struct inode
*inode
= NULL
;
1942 struct udf_options uopt
;
1943 struct kernel_lb_addr rootdir
, fileset
;
1944 struct udf_sb_info
*sbi
;
1946 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
) | (1 << UDF_FLAG_STRICT
);
1947 uopt
.uid
= INVALID_UID
;
1948 uopt
.gid
= INVALID_GID
;
1950 uopt
.fmode
= UDF_INVALID_MODE
;
1951 uopt
.dmode
= UDF_INVALID_MODE
;
1953 sbi
= kzalloc(sizeof(struct udf_sb_info
), GFP_KERNEL
);
1957 sb
->s_fs_info
= sbi
;
1959 mutex_init(&sbi
->s_alloc_mutex
);
1961 if (!udf_parse_options((char *)options
, &uopt
, false))
1964 if (uopt
.flags
& (1 << UDF_FLAG_UTF8
) &&
1965 uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) {
1966 udf_err(sb
, "utf8 cannot be combined with iocharset\n");
1969 #ifdef CONFIG_UDF_NLS
1970 if ((uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) && !uopt
.nls_map
) {
1971 uopt
.nls_map
= load_nls_default();
1973 uopt
.flags
&= ~(1 << UDF_FLAG_NLS_MAP
);
1975 udf_debug("Using default NLS map\n");
1978 if (!(uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)))
1979 uopt
.flags
|= (1 << UDF_FLAG_UTF8
);
1981 fileset
.logicalBlockNum
= 0xFFFFFFFF;
1982 fileset
.partitionReferenceNum
= 0xFFFF;
1984 sbi
->s_flags
= uopt
.flags
;
1985 sbi
->s_uid
= uopt
.uid
;
1986 sbi
->s_gid
= uopt
.gid
;
1987 sbi
->s_umask
= uopt
.umask
;
1988 sbi
->s_fmode
= uopt
.fmode
;
1989 sbi
->s_dmode
= uopt
.dmode
;
1990 sbi
->s_nls_map
= uopt
.nls_map
;
1991 rwlock_init(&sbi
->s_cred_lock
);
1993 if (uopt
.session
== 0xFFFFFFFF)
1994 sbi
->s_session
= udf_get_last_session(sb
);
1996 sbi
->s_session
= uopt
.session
;
1998 udf_debug("Multi-session=%d\n", sbi
->s_session
);
2000 /* Fill in the rest of the superblock */
2001 sb
->s_op
= &udf_sb_ops
;
2002 sb
->s_export_op
= &udf_export_ops
;
2004 sb
->s_magic
= UDF_SUPER_MAGIC
;
2005 sb
->s_time_gran
= 1000;
2007 if (uopt
.flags
& (1 << UDF_FLAG_BLOCKSIZE_SET
)) {
2008 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
2010 uopt
.blocksize
= bdev_logical_block_size(sb
->s_bdev
);
2011 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
2012 if (!ret
&& uopt
.blocksize
!= UDF_DEFAULT_BLOCKSIZE
) {
2014 pr_notice("Rescanning with blocksize %d\n",
2015 UDF_DEFAULT_BLOCKSIZE
);
2016 brelse(sbi
->s_lvid_bh
);
2017 sbi
->s_lvid_bh
= NULL
;
2018 uopt
.blocksize
= UDF_DEFAULT_BLOCKSIZE
;
2019 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
2023 udf_warn(sb
, "No partition found (1)\n");
2027 udf_debug("Lastblock=%d\n", sbi
->s_last_block
);
2029 if (sbi
->s_lvid_bh
) {
2030 struct logicalVolIntegrityDescImpUse
*lvidiu
=
2032 uint16_t minUDFReadRev
= le16_to_cpu(lvidiu
->minUDFReadRev
);
2033 uint16_t minUDFWriteRev
= le16_to_cpu(lvidiu
->minUDFWriteRev
);
2034 /* uint16_t maxUDFWriteRev =
2035 le16_to_cpu(lvidiu->maxUDFWriteRev); */
2037 if (minUDFReadRev
> UDF_MAX_READ_VERSION
) {
2038 udf_err(sb
, "minUDFReadRev=%x (max is %x)\n",
2039 le16_to_cpu(lvidiu
->minUDFReadRev
),
2040 UDF_MAX_READ_VERSION
);
2042 } else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
)
2043 sb
->s_flags
|= MS_RDONLY
;
2045 sbi
->s_udfrev
= minUDFWriteRev
;
2047 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
2048 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
2049 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
2050 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
2053 if (!sbi
->s_partitions
) {
2054 udf_warn(sb
, "No partition found (2)\n");
2058 if (sbi
->s_partmaps
[sbi
->s_partition
].s_partition_flags
&
2059 UDF_PART_FLAG_READ_ONLY
) {
2060 pr_notice("Partition marked readonly; forcing readonly mount\n");
2061 sb
->s_flags
|= MS_RDONLY
;
2064 if (udf_find_fileset(sb
, &fileset
, &rootdir
)) {
2065 udf_warn(sb
, "No fileset found\n");
2070 struct timestamp ts
;
2071 udf_time_to_disk_stamp(&ts
, sbi
->s_record_time
);
2072 udf_info("Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
2073 sbi
->s_volume_ident
,
2074 le16_to_cpu(ts
.year
), ts
.month
, ts
.day
,
2075 ts
.hour
, ts
.minute
, le16_to_cpu(ts
.typeAndTimezone
));
2077 if (!(sb
->s_flags
& MS_RDONLY
))
2080 /* Assign the root inode */
2081 /* assign inodes by physical block number */
2082 /* perhaps it's not extensible enough, but for now ... */
2083 inode
= udf_iget(sb
, &rootdir
);
2085 udf_err(sb
, "Error in udf_iget, block=%d, partition=%d\n",
2086 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
2090 /* Allocate a dentry for the root inode */
2091 sb
->s_root
= d_make_root(inode
);
2093 udf_err(sb
, "Couldn't allocate root dentry\n");
2096 sb
->s_maxbytes
= MAX_LFS_FILESIZE
;
2097 sb
->s_max_links
= UDF_MAX_LINKS
;
2101 if (sbi
->s_vat_inode
)
2102 iput(sbi
->s_vat_inode
);
2103 #ifdef CONFIG_UDF_NLS
2104 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2105 unload_nls(sbi
->s_nls_map
);
2107 if (!(sb
->s_flags
& MS_RDONLY
))
2109 brelse(sbi
->s_lvid_bh
);
2110 udf_sb_free_partitions(sb
);
2112 sb
->s_fs_info
= NULL
;
2117 void _udf_err(struct super_block
*sb
, const char *function
,
2118 const char *fmt
, ...)
2120 struct va_format vaf
;
2123 va_start(args
, fmt
);
2128 pr_err("error (device %s): %s: %pV", sb
->s_id
, function
, &vaf
);
2133 void _udf_warn(struct super_block
*sb
, const char *function
,
2134 const char *fmt
, ...)
2136 struct va_format vaf
;
2139 va_start(args
, fmt
);
2144 pr_warn("warning (device %s): %s: %pV", sb
->s_id
, function
, &vaf
);
2149 static void udf_put_super(struct super_block
*sb
)
2151 struct udf_sb_info
*sbi
;
2155 if (sbi
->s_vat_inode
)
2156 iput(sbi
->s_vat_inode
);
2157 #ifdef CONFIG_UDF_NLS
2158 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2159 unload_nls(sbi
->s_nls_map
);
2161 if (!(sb
->s_flags
& MS_RDONLY
))
2163 brelse(sbi
->s_lvid_bh
);
2164 udf_sb_free_partitions(sb
);
2165 kfree(sb
->s_fs_info
);
2166 sb
->s_fs_info
= NULL
;
2169 static int udf_sync_fs(struct super_block
*sb
, int wait
)
2171 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2173 mutex_lock(&sbi
->s_alloc_mutex
);
2174 if (sbi
->s_lvid_dirty
) {
2176 * Blockdevice will be synced later so we don't have to submit
2179 mark_buffer_dirty(sbi
->s_lvid_bh
);
2180 sbi
->s_lvid_dirty
= 0;
2182 mutex_unlock(&sbi
->s_alloc_mutex
);
2187 static int udf_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
2189 struct super_block
*sb
= dentry
->d_sb
;
2190 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2191 struct logicalVolIntegrityDescImpUse
*lvidiu
;
2192 u64 id
= huge_encode_dev(sb
->s_bdev
->bd_dev
);
2194 if (sbi
->s_lvid_bh
!= NULL
)
2195 lvidiu
= udf_sb_lvidiu(sbi
);
2199 buf
->f_type
= UDF_SUPER_MAGIC
;
2200 buf
->f_bsize
= sb
->s_blocksize
;
2201 buf
->f_blocks
= sbi
->s_partmaps
[sbi
->s_partition
].s_partition_len
;
2202 buf
->f_bfree
= udf_count_free(sb
);
2203 buf
->f_bavail
= buf
->f_bfree
;
2204 buf
->f_files
= (lvidiu
!= NULL
? (le32_to_cpu(lvidiu
->numFiles
) +
2205 le32_to_cpu(lvidiu
->numDirs
)) : 0)
2207 buf
->f_ffree
= buf
->f_bfree
;
2208 buf
->f_namelen
= UDF_NAME_LEN
- 2;
2209 buf
->f_fsid
.val
[0] = (u32
)id
;
2210 buf
->f_fsid
.val
[1] = (u32
)(id
>> 32);
2215 static unsigned int udf_count_free_bitmap(struct super_block
*sb
,
2216 struct udf_bitmap
*bitmap
)
2218 struct buffer_head
*bh
= NULL
;
2219 unsigned int accum
= 0;
2221 int block
= 0, newblock
;
2222 struct kernel_lb_addr loc
;
2226 struct spaceBitmapDesc
*bm
;
2228 loc
.logicalBlockNum
= bitmap
->s_extPosition
;
2229 loc
.partitionReferenceNum
= UDF_SB(sb
)->s_partition
;
2230 bh
= udf_read_ptagged(sb
, &loc
, 0, &ident
);
2233 udf_err(sb
, "udf_count_free failed\n");
2235 } else if (ident
!= TAG_IDENT_SBD
) {
2237 udf_err(sb
, "udf_count_free failed\n");
2241 bm
= (struct spaceBitmapDesc
*)bh
->b_data
;
2242 bytes
= le32_to_cpu(bm
->numOfBytes
);
2243 index
= sizeof(struct spaceBitmapDesc
); /* offset in first block only */
2244 ptr
= (uint8_t *)bh
->b_data
;
2247 u32 cur_bytes
= min_t(u32
, bytes
, sb
->s_blocksize
- index
);
2248 accum
+= bitmap_weight((const unsigned long *)(ptr
+ index
),
2253 newblock
= udf_get_lb_pblock(sb
, &loc
, ++block
);
2254 bh
= udf_tread(sb
, newblock
);
2256 udf_debug("read failed\n");
2260 ptr
= (uint8_t *)bh
->b_data
;
2268 static unsigned int udf_count_free_table(struct super_block
*sb
,
2269 struct inode
*table
)
2271 unsigned int accum
= 0;
2273 struct kernel_lb_addr eloc
;
2275 struct extent_position epos
;
2277 mutex_lock(&UDF_SB(sb
)->s_alloc_mutex
);
2278 epos
.block
= UDF_I(table
)->i_location
;
2279 epos
.offset
= sizeof(struct unallocSpaceEntry
);
2282 while ((etype
= udf_next_aext(table
, &epos
, &eloc
, &elen
, 1)) != -1)
2283 accum
+= (elen
>> table
->i_sb
->s_blocksize_bits
);
2286 mutex_unlock(&UDF_SB(sb
)->s_alloc_mutex
);
2291 static unsigned int udf_count_free(struct super_block
*sb
)
2293 unsigned int accum
= 0;
2294 struct udf_sb_info
*sbi
;
2295 struct udf_part_map
*map
;
2298 if (sbi
->s_lvid_bh
) {
2299 struct logicalVolIntegrityDesc
*lvid
=
2300 (struct logicalVolIntegrityDesc
*)
2301 sbi
->s_lvid_bh
->b_data
;
2302 if (le32_to_cpu(lvid
->numOfPartitions
) > sbi
->s_partition
) {
2303 accum
= le32_to_cpu(
2304 lvid
->freeSpaceTable
[sbi
->s_partition
]);
2305 if (accum
== 0xFFFFFFFF)
2313 map
= &sbi
->s_partmaps
[sbi
->s_partition
];
2314 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
) {
2315 accum
+= udf_count_free_bitmap(sb
,
2316 map
->s_uspace
.s_bitmap
);
2318 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
) {
2319 accum
+= udf_count_free_bitmap(sb
,
2320 map
->s_fspace
.s_bitmap
);
2325 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
) {
2326 accum
+= udf_count_free_table(sb
,
2327 map
->s_uspace
.s_table
);
2329 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
) {
2330 accum
+= udf_count_free_table(sb
,
2331 map
->s_fspace
.s_table
);