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
);
311 for (i
= 0; i
< sbi
->s_partitions
; i
++)
312 udf_free_partition(&sbi
->s_partmaps
[i
]);
313 kfree(sbi
->s_partmaps
);
314 sbi
->s_partmaps
= NULL
;
317 static int udf_show_options(struct seq_file
*seq
, struct dentry
*root
)
319 struct super_block
*sb
= root
->d_sb
;
320 struct udf_sb_info
*sbi
= UDF_SB(sb
);
322 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_STRICT
))
323 seq_puts(seq
, ",nostrict");
324 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_BLOCKSIZE_SET
))
325 seq_printf(seq
, ",bs=%lu", sb
->s_blocksize
);
326 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNHIDE
))
327 seq_puts(seq
, ",unhide");
328 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNDELETE
))
329 seq_puts(seq
, ",undelete");
330 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_AD_IN_ICB
))
331 seq_puts(seq
, ",noadinicb");
332 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_SHORT_AD
))
333 seq_puts(seq
, ",shortad");
334 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_FORGET
))
335 seq_puts(seq
, ",uid=forget");
336 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_IGNORE
))
337 seq_puts(seq
, ",uid=ignore");
338 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_FORGET
))
339 seq_puts(seq
, ",gid=forget");
340 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_IGNORE
))
341 seq_puts(seq
, ",gid=ignore");
342 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_SET
))
343 seq_printf(seq
, ",uid=%u", sbi
->s_uid
);
344 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_SET
))
345 seq_printf(seq
, ",gid=%u", sbi
->s_gid
);
346 if (sbi
->s_umask
!= 0)
347 seq_printf(seq
, ",umask=%ho", sbi
->s_umask
);
348 if (sbi
->s_fmode
!= UDF_INVALID_MODE
)
349 seq_printf(seq
, ",mode=%ho", sbi
->s_fmode
);
350 if (sbi
->s_dmode
!= UDF_INVALID_MODE
)
351 seq_printf(seq
, ",dmode=%ho", sbi
->s_dmode
);
352 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_SESSION_SET
))
353 seq_printf(seq
, ",session=%u", sbi
->s_session
);
354 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_LASTBLOCK_SET
))
355 seq_printf(seq
, ",lastblock=%u", sbi
->s_last_block
);
356 if (sbi
->s_anchor
!= 0)
357 seq_printf(seq
, ",anchor=%u", sbi
->s_anchor
);
359 * volume, partition, fileset and rootdir seem to be ignored
362 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UTF8
))
363 seq_puts(seq
, ",utf8");
364 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
) && sbi
->s_nls_map
)
365 seq_printf(seq
, ",iocharset=%s", sbi
->s_nls_map
->charset
);
374 * Parse mount options.
377 * The following mount options are supported:
379 * gid= Set the default group.
380 * umask= Set the default umask.
381 * mode= Set the default file permissions.
382 * dmode= Set the default directory permissions.
383 * uid= Set the default user.
384 * bs= Set the block size.
385 * unhide Show otherwise hidden files.
386 * undelete Show deleted files in lists.
387 * adinicb Embed data in the inode (default)
388 * noadinicb Don't embed data in the inode
389 * shortad Use short ad's
390 * longad Use long ad's (default)
391 * nostrict Unset strict conformance
392 * iocharset= Set the NLS character set
394 * The remaining are for debugging and disaster recovery:
396 * novrs Skip volume sequence recognition
398 * The following expect a offset from 0.
400 * session= Set the CDROM session (default= last session)
401 * anchor= Override standard anchor location. (default= 256)
402 * volume= Override the VolumeDesc location. (unused)
403 * partition= Override the PartitionDesc location. (unused)
404 * lastblock= Set the last block of the filesystem/
406 * The following expect a offset from the partition root.
408 * fileset= Override the fileset block location. (unused)
409 * rootdir= Override the root directory location. (unused)
410 * WARNING: overriding the rootdir to a non-directory may
411 * yield highly unpredictable results.
414 * options Pointer to mount options string.
415 * uopts Pointer to mount options variable.
418 * <return> 1 Mount options parsed okay.
419 * <return> 0 Error parsing mount options.
422 * July 1, 1997 - Andrew E. Mileski
423 * Written, tested, and released.
427 Opt_novrs
, Opt_nostrict
, Opt_bs
, Opt_unhide
, Opt_undelete
,
428 Opt_noadinicb
, Opt_adinicb
, Opt_shortad
, Opt_longad
,
429 Opt_gid
, Opt_uid
, Opt_umask
, Opt_session
, Opt_lastblock
,
430 Opt_anchor
, Opt_volume
, Opt_partition
, Opt_fileset
,
431 Opt_rootdir
, Opt_utf8
, Opt_iocharset
,
432 Opt_err
, Opt_uforget
, Opt_uignore
, Opt_gforget
, Opt_gignore
,
436 static const match_table_t tokens
= {
437 {Opt_novrs
, "novrs"},
438 {Opt_nostrict
, "nostrict"},
440 {Opt_unhide
, "unhide"},
441 {Opt_undelete
, "undelete"},
442 {Opt_noadinicb
, "noadinicb"},
443 {Opt_adinicb
, "adinicb"},
444 {Opt_shortad
, "shortad"},
445 {Opt_longad
, "longad"},
446 {Opt_uforget
, "uid=forget"},
447 {Opt_uignore
, "uid=ignore"},
448 {Opt_gforget
, "gid=forget"},
449 {Opt_gignore
, "gid=ignore"},
452 {Opt_umask
, "umask=%o"},
453 {Opt_session
, "session=%u"},
454 {Opt_lastblock
, "lastblock=%u"},
455 {Opt_anchor
, "anchor=%u"},
456 {Opt_volume
, "volume=%u"},
457 {Opt_partition
, "partition=%u"},
458 {Opt_fileset
, "fileset=%u"},
459 {Opt_rootdir
, "rootdir=%u"},
461 {Opt_iocharset
, "iocharset=%s"},
462 {Opt_fmode
, "mode=%o"},
463 {Opt_dmode
, "dmode=%o"},
467 static int udf_parse_options(char *options
, struct udf_options
*uopt
,
474 uopt
->partition
= 0xFFFF;
475 uopt
->session
= 0xFFFFFFFF;
478 uopt
->volume
= 0xFFFFFFFF;
479 uopt
->rootdir
= 0xFFFFFFFF;
480 uopt
->fileset
= 0xFFFFFFFF;
481 uopt
->nls_map
= NULL
;
486 while ((p
= strsep(&options
, ",")) != NULL
) {
487 substring_t args
[MAX_OPT_ARGS
];
492 token
= match_token(p
, tokens
, args
);
498 if (match_int(&args
[0], &option
))
500 uopt
->blocksize
= option
;
501 uopt
->flags
|= (1 << UDF_FLAG_BLOCKSIZE_SET
);
504 uopt
->flags
|= (1 << UDF_FLAG_UNHIDE
);
507 uopt
->flags
|= (1 << UDF_FLAG_UNDELETE
);
510 uopt
->flags
&= ~(1 << UDF_FLAG_USE_AD_IN_ICB
);
513 uopt
->flags
|= (1 << UDF_FLAG_USE_AD_IN_ICB
);
516 uopt
->flags
|= (1 << UDF_FLAG_USE_SHORT_AD
);
519 uopt
->flags
&= ~(1 << UDF_FLAG_USE_SHORT_AD
);
522 if (match_int(args
, &option
))
525 uopt
->flags
|= (1 << UDF_FLAG_GID_SET
);
528 if (match_int(args
, &option
))
531 uopt
->flags
|= (1 << UDF_FLAG_UID_SET
);
534 if (match_octal(args
, &option
))
536 uopt
->umask
= option
;
539 uopt
->flags
&= ~(1 << UDF_FLAG_STRICT
);
542 if (match_int(args
, &option
))
544 uopt
->session
= option
;
546 uopt
->flags
|= (1 << UDF_FLAG_SESSION_SET
);
549 if (match_int(args
, &option
))
551 uopt
->lastblock
= option
;
553 uopt
->flags
|= (1 << UDF_FLAG_LASTBLOCK_SET
);
556 if (match_int(args
, &option
))
558 uopt
->anchor
= option
;
561 if (match_int(args
, &option
))
563 uopt
->volume
= option
;
566 if (match_int(args
, &option
))
568 uopt
->partition
= option
;
571 if (match_int(args
, &option
))
573 uopt
->fileset
= option
;
576 if (match_int(args
, &option
))
578 uopt
->rootdir
= option
;
581 uopt
->flags
|= (1 << UDF_FLAG_UTF8
);
583 #ifdef CONFIG_UDF_NLS
585 uopt
->nls_map
= load_nls(args
[0].from
);
586 uopt
->flags
|= (1 << UDF_FLAG_NLS_MAP
);
590 uopt
->flags
|= (1 << UDF_FLAG_UID_IGNORE
);
593 uopt
->flags
|= (1 << UDF_FLAG_UID_FORGET
);
596 uopt
->flags
|= (1 << UDF_FLAG_GID_IGNORE
);
599 uopt
->flags
|= (1 << UDF_FLAG_GID_FORGET
);
602 if (match_octal(args
, &option
))
604 uopt
->fmode
= option
& 0777;
607 if (match_octal(args
, &option
))
609 uopt
->dmode
= option
& 0777;
612 pr_err("bad mount option \"%s\" or missing value\n", p
);
619 static int udf_remount_fs(struct super_block
*sb
, int *flags
, char *options
)
621 struct udf_options uopt
;
622 struct udf_sb_info
*sbi
= UDF_SB(sb
);
625 uopt
.flags
= sbi
->s_flags
;
626 uopt
.uid
= sbi
->s_uid
;
627 uopt
.gid
= sbi
->s_gid
;
628 uopt
.umask
= sbi
->s_umask
;
629 uopt
.fmode
= sbi
->s_fmode
;
630 uopt
.dmode
= sbi
->s_dmode
;
632 if (!udf_parse_options(options
, &uopt
, true))
635 write_lock(&sbi
->s_cred_lock
);
636 sbi
->s_flags
= uopt
.flags
;
637 sbi
->s_uid
= uopt
.uid
;
638 sbi
->s_gid
= uopt
.gid
;
639 sbi
->s_umask
= uopt
.umask
;
640 sbi
->s_fmode
= uopt
.fmode
;
641 sbi
->s_dmode
= uopt
.dmode
;
642 write_unlock(&sbi
->s_cred_lock
);
644 if (sbi
->s_lvid_bh
) {
645 int write_rev
= le16_to_cpu(udf_sb_lvidiu(sbi
)->minUDFWriteRev
);
646 if (write_rev
> UDF_MAX_WRITE_VERSION
)
650 if ((*flags
& MS_RDONLY
) == (sb
->s_flags
& MS_RDONLY
))
653 if (*flags
& MS_RDONLY
)
662 /* Check Volume Structure Descriptors (ECMA 167 2/9.1) */
663 /* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
664 static loff_t
udf_check_vsd(struct super_block
*sb
)
666 struct volStructDesc
*vsd
= NULL
;
667 loff_t sector
= 32768;
669 struct buffer_head
*bh
= NULL
;
672 struct udf_sb_info
*sbi
;
675 if (sb
->s_blocksize
< sizeof(struct volStructDesc
))
676 sectorsize
= sizeof(struct volStructDesc
);
678 sectorsize
= sb
->s_blocksize
;
680 sector
+= (sbi
->s_session
<< sb
->s_blocksize_bits
);
682 udf_debug("Starting at sector %u (%ld byte sectors)\n",
683 (unsigned int)(sector
>> sb
->s_blocksize_bits
),
685 /* Process the sequence (if applicable) */
686 for (; !nsr02
&& !nsr03
; sector
+= sectorsize
) {
688 bh
= udf_tread(sb
, sector
>> sb
->s_blocksize_bits
);
692 /* Look for ISO descriptors */
693 vsd
= (struct volStructDesc
*)(bh
->b_data
+
694 (sector
& (sb
->s_blocksize
- 1)));
696 if (vsd
->stdIdent
[0] == 0) {
699 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_CD001
,
701 switch (vsd
->structType
) {
703 udf_debug("ISO9660 Boot Record found\n");
706 udf_debug("ISO9660 Primary Volume Descriptor found\n");
709 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
712 udf_debug("ISO9660 Volume Partition Descriptor found\n");
715 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
718 udf_debug("ISO9660 VRS (%u) found\n",
722 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_BEA01
,
725 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_TEA01
,
729 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR02
,
732 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR03
,
742 else if (sector
- (sbi
->s_session
<< sb
->s_blocksize_bits
) == 32768)
748 static int udf_find_fileset(struct super_block
*sb
,
749 struct kernel_lb_addr
*fileset
,
750 struct kernel_lb_addr
*root
)
752 struct buffer_head
*bh
= NULL
;
755 struct udf_sb_info
*sbi
;
757 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
758 fileset
->partitionReferenceNum
!= 0xFFFF) {
759 bh
= udf_read_ptagged(sb
, fileset
, 0, &ident
);
763 } else if (ident
!= TAG_IDENT_FSD
) {
772 /* Search backwards through the partitions */
773 struct kernel_lb_addr newfileset
;
775 /* --> cvg: FIXME - is it reasonable? */
778 for (newfileset
.partitionReferenceNum
= sbi
->s_partitions
- 1;
779 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
780 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
781 fileset
->partitionReferenceNum
== 0xFFFF);
782 newfileset
.partitionReferenceNum
--) {
783 lastblock
= sbi
->s_partmaps
784 [newfileset
.partitionReferenceNum
]
786 newfileset
.logicalBlockNum
= 0;
789 bh
= udf_read_ptagged(sb
, &newfileset
, 0,
792 newfileset
.logicalBlockNum
++;
799 struct spaceBitmapDesc
*sp
;
800 sp
= (struct spaceBitmapDesc
*)
802 newfileset
.logicalBlockNum
+= 1 +
803 ((le32_to_cpu(sp
->numOfBytes
) +
804 sizeof(struct spaceBitmapDesc
)
805 - 1) >> sb
->s_blocksize_bits
);
810 *fileset
= newfileset
;
813 newfileset
.logicalBlockNum
++;
818 } while (newfileset
.logicalBlockNum
< lastblock
&&
819 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
820 fileset
->partitionReferenceNum
== 0xFFFF);
824 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
825 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
) {
826 udf_debug("Fileset at block=%d, partition=%d\n",
827 fileset
->logicalBlockNum
,
828 fileset
->partitionReferenceNum
);
830 sbi
->s_partition
= fileset
->partitionReferenceNum
;
831 udf_load_fileset(sb
, bh
, root
);
838 static int udf_load_pvoldesc(struct super_block
*sb
, sector_t block
)
840 struct primaryVolDesc
*pvoldesc
;
841 struct ustr
*instr
, *outstr
;
842 struct buffer_head
*bh
;
846 instr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
850 outstr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
854 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
858 BUG_ON(ident
!= TAG_IDENT_PVD
);
860 pvoldesc
= (struct primaryVolDesc
*)bh
->b_data
;
862 if (udf_disk_stamp_to_time(&UDF_SB(sb
)->s_record_time
,
863 pvoldesc
->recordingDateAndTime
)) {
865 struct timestamp
*ts
= &pvoldesc
->recordingDateAndTime
;
866 udf_debug("recording time %04u/%02u/%02u %02u:%02u (%x)\n",
867 le16_to_cpu(ts
->year
), ts
->month
, ts
->day
, ts
->hour
,
868 ts
->minute
, le16_to_cpu(ts
->typeAndTimezone
));
872 if (!udf_build_ustr(instr
, pvoldesc
->volIdent
, 32))
873 if (udf_CS0toUTF8(outstr
, instr
)) {
874 strncpy(UDF_SB(sb
)->s_volume_ident
, outstr
->u_name
,
875 outstr
->u_len
> 31 ? 31 : outstr
->u_len
);
876 udf_debug("volIdent[] = '%s'\n",
877 UDF_SB(sb
)->s_volume_ident
);
880 if (!udf_build_ustr(instr
, pvoldesc
->volSetIdent
, 128))
881 if (udf_CS0toUTF8(outstr
, instr
))
882 udf_debug("volSetIdent[] = '%s'\n", outstr
->u_name
);
893 struct inode
*udf_find_metadata_inode_efe(struct super_block
*sb
,
894 u32 meta_file_loc
, u32 partition_num
)
896 struct kernel_lb_addr addr
;
897 struct inode
*metadata_fe
;
899 addr
.logicalBlockNum
= meta_file_loc
;
900 addr
.partitionReferenceNum
= partition_num
;
902 metadata_fe
= udf_iget(sb
, &addr
);
904 if (metadata_fe
== NULL
)
905 udf_warn(sb
, "metadata inode efe not found\n");
906 else if (UDF_I(metadata_fe
)->i_alloc_type
!= ICBTAG_FLAG_AD_SHORT
) {
907 udf_warn(sb
, "metadata inode efe does not have short allocation descriptors!\n");
915 static int udf_load_metadata_files(struct super_block
*sb
, int partition
)
917 struct udf_sb_info
*sbi
= UDF_SB(sb
);
918 struct udf_part_map
*map
;
919 struct udf_meta_data
*mdata
;
920 struct kernel_lb_addr addr
;
922 map
= &sbi
->s_partmaps
[partition
];
923 mdata
= &map
->s_type_specific
.s_metadata
;
925 /* metadata address */
926 udf_debug("Metadata file location: block = %d part = %d\n",
927 mdata
->s_meta_file_loc
, map
->s_partition_num
);
929 mdata
->s_metadata_fe
= udf_find_metadata_inode_efe(sb
,
930 mdata
->s_meta_file_loc
, map
->s_partition_num
);
932 if (mdata
->s_metadata_fe
== NULL
) {
933 /* mirror file entry */
934 udf_debug("Mirror metadata file location: block = %d part = %d\n",
935 mdata
->s_mirror_file_loc
, map
->s_partition_num
);
937 mdata
->s_mirror_fe
= udf_find_metadata_inode_efe(sb
,
938 mdata
->s_mirror_file_loc
, map
->s_partition_num
);
940 if (mdata
->s_mirror_fe
== NULL
) {
941 udf_err(sb
, "Both metadata and mirror metadata inode efe can not found\n");
949 * Load only if bitmap file location differs from 0xFFFFFFFF (DCN-5102)
951 if (mdata
->s_bitmap_file_loc
!= 0xFFFFFFFF) {
952 addr
.logicalBlockNum
= mdata
->s_bitmap_file_loc
;
953 addr
.partitionReferenceNum
= map
->s_partition_num
;
955 udf_debug("Bitmap file location: block = %d part = %d\n",
956 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
958 mdata
->s_bitmap_fe
= udf_iget(sb
, &addr
);
960 if (mdata
->s_bitmap_fe
== NULL
) {
961 if (sb
->s_flags
& MS_RDONLY
)
962 udf_warn(sb
, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n");
964 udf_err(sb
, "bitmap inode efe not found and attempted read-write mount\n");
970 udf_debug("udf_load_metadata_files Ok\n");
978 static void udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
,
979 struct kernel_lb_addr
*root
)
981 struct fileSetDesc
*fset
;
983 fset
= (struct fileSetDesc
*)bh
->b_data
;
985 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
987 UDF_SB(sb
)->s_serial_number
= le16_to_cpu(fset
->descTag
.tagSerialNum
);
989 udf_debug("Rootdir at block=%d, partition=%d\n",
990 root
->logicalBlockNum
, root
->partitionReferenceNum
);
993 int udf_compute_nr_groups(struct super_block
*sb
, u32 partition
)
995 struct udf_part_map
*map
= &UDF_SB(sb
)->s_partmaps
[partition
];
996 return DIV_ROUND_UP(map
->s_partition_len
+
997 (sizeof(struct spaceBitmapDesc
) << 3),
998 sb
->s_blocksize
* 8);
1001 static struct udf_bitmap
*udf_sb_alloc_bitmap(struct super_block
*sb
, u32 index
)
1003 struct udf_bitmap
*bitmap
;
1007 nr_groups
= udf_compute_nr_groups(sb
, index
);
1008 size
= sizeof(struct udf_bitmap
) +
1009 (sizeof(struct buffer_head
*) * nr_groups
);
1011 if (size
<= PAGE_SIZE
)
1012 bitmap
= kzalloc(size
, GFP_KERNEL
);
1014 bitmap
= vzalloc(size
); /* TODO: get rid of vzalloc */
1019 bitmap
->s_block_bitmap
= (struct buffer_head
**)(bitmap
+ 1);
1020 bitmap
->s_nr_groups
= nr_groups
;
1024 static int udf_fill_partdesc_info(struct super_block
*sb
,
1025 struct partitionDesc
*p
, int p_index
)
1027 struct udf_part_map
*map
;
1028 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1029 struct partitionHeaderDesc
*phd
;
1031 map
= &sbi
->s_partmaps
[p_index
];
1033 map
->s_partition_len
= le32_to_cpu(p
->partitionLength
); /* blocks */
1034 map
->s_partition_root
= le32_to_cpu(p
->partitionStartingLocation
);
1036 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY
))
1037 map
->s_partition_flags
|= UDF_PART_FLAG_READ_ONLY
;
1038 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE
))
1039 map
->s_partition_flags
|= UDF_PART_FLAG_WRITE_ONCE
;
1040 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE
))
1041 map
->s_partition_flags
|= UDF_PART_FLAG_REWRITABLE
;
1042 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE
))
1043 map
->s_partition_flags
|= UDF_PART_FLAG_OVERWRITABLE
;
1045 udf_debug("Partition (%d type %x) starts at physical %d, block length %d\n",
1046 p_index
, map
->s_partition_type
,
1047 map
->s_partition_root
, map
->s_partition_len
);
1049 if (strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR02
) &&
1050 strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR03
))
1053 phd
= (struct partitionHeaderDesc
*)p
->partitionContentsUse
;
1054 if (phd
->unallocSpaceTable
.extLength
) {
1055 struct kernel_lb_addr loc
= {
1056 .logicalBlockNum
= le32_to_cpu(
1057 phd
->unallocSpaceTable
.extPosition
),
1058 .partitionReferenceNum
= p_index
,
1061 map
->s_uspace
.s_table
= udf_iget(sb
, &loc
);
1062 if (!map
->s_uspace
.s_table
) {
1063 udf_debug("cannot load unallocSpaceTable (part %d)\n",
1067 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_TABLE
;
1068 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1069 p_index
, map
->s_uspace
.s_table
->i_ino
);
1072 if (phd
->unallocSpaceBitmap
.extLength
) {
1073 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1076 map
->s_uspace
.s_bitmap
= bitmap
;
1077 bitmap
->s_extLength
= le32_to_cpu(
1078 phd
->unallocSpaceBitmap
.extLength
);
1079 bitmap
->s_extPosition
= le32_to_cpu(
1080 phd
->unallocSpaceBitmap
.extPosition
);
1081 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_BITMAP
;
1082 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
1083 p_index
, bitmap
->s_extPosition
);
1086 if (phd
->partitionIntegrityTable
.extLength
)
1087 udf_debug("partitionIntegrityTable (part %d)\n", p_index
);
1089 if (phd
->freedSpaceTable
.extLength
) {
1090 struct kernel_lb_addr loc
= {
1091 .logicalBlockNum
= le32_to_cpu(
1092 phd
->freedSpaceTable
.extPosition
),
1093 .partitionReferenceNum
= p_index
,
1096 map
->s_fspace
.s_table
= udf_iget(sb
, &loc
);
1097 if (!map
->s_fspace
.s_table
) {
1098 udf_debug("cannot load freedSpaceTable (part %d)\n",
1103 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_TABLE
;
1104 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1105 p_index
, map
->s_fspace
.s_table
->i_ino
);
1108 if (phd
->freedSpaceBitmap
.extLength
) {
1109 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1112 map
->s_fspace
.s_bitmap
= bitmap
;
1113 bitmap
->s_extLength
= le32_to_cpu(
1114 phd
->freedSpaceBitmap
.extLength
);
1115 bitmap
->s_extPosition
= le32_to_cpu(
1116 phd
->freedSpaceBitmap
.extPosition
);
1117 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_BITMAP
;
1118 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1119 p_index
, bitmap
->s_extPosition
);
1124 static void udf_find_vat_block(struct super_block
*sb
, int p_index
,
1125 int type1_index
, sector_t start_block
)
1127 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1128 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1130 struct kernel_lb_addr ino
;
1133 * VAT file entry is in the last recorded block. Some broken disks have
1134 * it a few blocks before so try a bit harder...
1136 ino
.partitionReferenceNum
= type1_index
;
1137 for (vat_block
= start_block
;
1138 vat_block
>= map
->s_partition_root
&&
1139 vat_block
>= start_block
- 3 &&
1140 !sbi
->s_vat_inode
; vat_block
--) {
1141 ino
.logicalBlockNum
= vat_block
- map
->s_partition_root
;
1142 sbi
->s_vat_inode
= udf_iget(sb
, &ino
);
1146 static int udf_load_vat(struct super_block
*sb
, int p_index
, int type1_index
)
1148 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1149 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1150 struct buffer_head
*bh
= NULL
;
1151 struct udf_inode_info
*vati
;
1153 struct virtualAllocationTable20
*vat20
;
1154 sector_t blocks
= sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
;
1156 udf_find_vat_block(sb
, p_index
, type1_index
, sbi
->s_last_block
);
1157 if (!sbi
->s_vat_inode
&&
1158 sbi
->s_last_block
!= blocks
- 1) {
1159 pr_notice("Failed to read VAT inode from the last recorded block (%lu), retrying with the last block of the device (%lu).\n",
1160 (unsigned long)sbi
->s_last_block
,
1161 (unsigned long)blocks
- 1);
1162 udf_find_vat_block(sb
, p_index
, type1_index
, blocks
- 1);
1164 if (!sbi
->s_vat_inode
)
1167 if (map
->s_partition_type
== UDF_VIRTUAL_MAP15
) {
1168 map
->s_type_specific
.s_virtual
.s_start_offset
= 0;
1169 map
->s_type_specific
.s_virtual
.s_num_entries
=
1170 (sbi
->s_vat_inode
->i_size
- 36) >> 2;
1171 } else if (map
->s_partition_type
== UDF_VIRTUAL_MAP20
) {
1172 vati
= UDF_I(sbi
->s_vat_inode
);
1173 if (vati
->i_alloc_type
!= ICBTAG_FLAG_AD_IN_ICB
) {
1174 pos
= udf_block_map(sbi
->s_vat_inode
, 0);
1175 bh
= sb_bread(sb
, pos
);
1178 vat20
= (struct virtualAllocationTable20
*)bh
->b_data
;
1180 vat20
= (struct virtualAllocationTable20
*)
1184 map
->s_type_specific
.s_virtual
.s_start_offset
=
1185 le16_to_cpu(vat20
->lengthHeader
);
1186 map
->s_type_specific
.s_virtual
.s_num_entries
=
1187 (sbi
->s_vat_inode
->i_size
-
1188 map
->s_type_specific
.s_virtual
.
1189 s_start_offset
) >> 2;
1195 static int udf_load_partdesc(struct super_block
*sb
, sector_t block
)
1197 struct buffer_head
*bh
;
1198 struct partitionDesc
*p
;
1199 struct udf_part_map
*map
;
1200 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1202 uint16_t partitionNumber
;
1206 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1209 if (ident
!= TAG_IDENT_PD
)
1212 p
= (struct partitionDesc
*)bh
->b_data
;
1213 partitionNumber
= le16_to_cpu(p
->partitionNumber
);
1215 /* First scan for TYPE1, SPARABLE and METADATA partitions */
1216 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1217 map
= &sbi
->s_partmaps
[i
];
1218 udf_debug("Searching map: (%d == %d)\n",
1219 map
->s_partition_num
, partitionNumber
);
1220 if (map
->s_partition_num
== partitionNumber
&&
1221 (map
->s_partition_type
== UDF_TYPE1_MAP15
||
1222 map
->s_partition_type
== UDF_SPARABLE_MAP15
))
1226 if (i
>= sbi
->s_partitions
) {
1227 udf_debug("Partition (%d) not found in partition map\n",
1232 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1235 * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and
1236 * PHYSICAL partitions are already set up
1239 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1240 map
= &sbi
->s_partmaps
[i
];
1242 if (map
->s_partition_num
== partitionNumber
&&
1243 (map
->s_partition_type
== UDF_VIRTUAL_MAP15
||
1244 map
->s_partition_type
== UDF_VIRTUAL_MAP20
||
1245 map
->s_partition_type
== UDF_METADATA_MAP25
))
1249 if (i
>= sbi
->s_partitions
)
1252 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1256 if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
1257 ret
= udf_load_metadata_files(sb
, i
);
1259 udf_err(sb
, "error loading MetaData partition map %d\n",
1264 ret
= udf_load_vat(sb
, i
, type1_idx
);
1268 * Mark filesystem read-only if we have a partition with
1269 * virtual map since we don't handle writing to it (we
1270 * overwrite blocks instead of relocating them).
1272 sb
->s_flags
|= MS_RDONLY
;
1273 pr_notice("Filesystem marked read-only because writing to pseudooverwrite partition is not implemented\n");
1276 /* In case loading failed, we handle cleanup in udf_fill_super */
1281 static int udf_load_sparable_map(struct super_block
*sb
,
1282 struct udf_part_map
*map
,
1283 struct sparablePartitionMap
*spm
)
1287 struct sparingTable
*st
;
1288 struct udf_sparing_data
*sdata
= &map
->s_type_specific
.s_sparing
;
1290 struct buffer_head
*bh
;
1292 map
->s_partition_type
= UDF_SPARABLE_MAP15
;
1293 sdata
->s_packet_len
= le16_to_cpu(spm
->packetLength
);
1294 if (!is_power_of_2(sdata
->s_packet_len
)) {
1295 udf_err(sb
, "error loading logical volume descriptor: "
1296 "Invalid packet length %u\n",
1297 (unsigned)sdata
->s_packet_len
);
1300 if (spm
->numSparingTables
> 4) {
1301 udf_err(sb
, "error loading logical volume descriptor: "
1302 "Too many sparing tables (%d)\n",
1303 (int)spm
->numSparingTables
);
1307 for (i
= 0; i
< spm
->numSparingTables
; i
++) {
1308 loc
= le32_to_cpu(spm
->locSparingTable
[i
]);
1309 bh
= udf_read_tagged(sb
, loc
, loc
, &ident
);
1313 st
= (struct sparingTable
*)bh
->b_data
;
1315 strncmp(st
->sparingIdent
.ident
, UDF_ID_SPARING
,
1316 strlen(UDF_ID_SPARING
)) ||
1317 sizeof(*st
) + le16_to_cpu(st
->reallocationTableLen
) >
1323 sdata
->s_spar_map
[i
] = bh
;
1325 map
->s_partition_func
= udf_get_pblock_spar15
;
1329 static int udf_load_logicalvol(struct super_block
*sb
, sector_t block
,
1330 struct kernel_lb_addr
*fileset
)
1332 struct logicalVolDesc
*lvd
;
1335 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1336 struct genericPartitionMap
*gpm
;
1338 struct buffer_head
*bh
;
1339 unsigned int table_len
;
1342 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1345 BUG_ON(ident
!= TAG_IDENT_LVD
);
1346 lvd
= (struct logicalVolDesc
*)bh
->b_data
;
1347 table_len
= le32_to_cpu(lvd
->mapTableLength
);
1348 if (table_len
> sb
->s_blocksize
- sizeof(*lvd
)) {
1349 udf_err(sb
, "error loading logical volume descriptor: "
1350 "Partition table too long (%u > %lu)\n", table_len
,
1351 sb
->s_blocksize
- sizeof(*lvd
));
1356 ret
= udf_sb_alloc_partition_maps(sb
, le32_to_cpu(lvd
->numPartitionMaps
));
1360 for (i
= 0, offset
= 0;
1361 i
< sbi
->s_partitions
&& offset
< table_len
;
1362 i
++, offset
+= gpm
->partitionMapLength
) {
1363 struct udf_part_map
*map
= &sbi
->s_partmaps
[i
];
1364 gpm
= (struct genericPartitionMap
*)
1365 &(lvd
->partitionMaps
[offset
]);
1366 type
= gpm
->partitionMapType
;
1368 struct genericPartitionMap1
*gpm1
=
1369 (struct genericPartitionMap1
*)gpm
;
1370 map
->s_partition_type
= UDF_TYPE1_MAP15
;
1371 map
->s_volumeseqnum
= le16_to_cpu(gpm1
->volSeqNum
);
1372 map
->s_partition_num
= le16_to_cpu(gpm1
->partitionNum
);
1373 map
->s_partition_func
= NULL
;
1374 } else if (type
== 2) {
1375 struct udfPartitionMap2
*upm2
=
1376 (struct udfPartitionMap2
*)gpm
;
1377 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
,
1378 strlen(UDF_ID_VIRTUAL
))) {
1380 le16_to_cpu(((__le16
*)upm2
->partIdent
.
1383 map
->s_partition_type
=
1385 map
->s_partition_func
=
1386 udf_get_pblock_virt15
;
1388 map
->s_partition_type
=
1390 map
->s_partition_func
=
1391 udf_get_pblock_virt20
;
1393 } else if (!strncmp(upm2
->partIdent
.ident
,
1395 strlen(UDF_ID_SPARABLE
))) {
1396 if (udf_load_sparable_map(sb
, map
,
1397 (struct sparablePartitionMap
*)gpm
) < 0) {
1401 } else if (!strncmp(upm2
->partIdent
.ident
,
1403 strlen(UDF_ID_METADATA
))) {
1404 struct udf_meta_data
*mdata
=
1405 &map
->s_type_specific
.s_metadata
;
1406 struct metadataPartitionMap
*mdm
=
1407 (struct metadataPartitionMap
*)
1408 &(lvd
->partitionMaps
[offset
]);
1409 udf_debug("Parsing Logical vol part %d type %d id=%s\n",
1410 i
, type
, UDF_ID_METADATA
);
1412 map
->s_partition_type
= UDF_METADATA_MAP25
;
1413 map
->s_partition_func
= udf_get_pblock_meta25
;
1415 mdata
->s_meta_file_loc
=
1416 le32_to_cpu(mdm
->metadataFileLoc
);
1417 mdata
->s_mirror_file_loc
=
1418 le32_to_cpu(mdm
->metadataMirrorFileLoc
);
1419 mdata
->s_bitmap_file_loc
=
1420 le32_to_cpu(mdm
->metadataBitmapFileLoc
);
1421 mdata
->s_alloc_unit_size
=
1422 le32_to_cpu(mdm
->allocUnitSize
);
1423 mdata
->s_align_unit_size
=
1424 le16_to_cpu(mdm
->alignUnitSize
);
1425 if (mdm
->flags
& 0x01)
1426 mdata
->s_flags
|= MF_DUPLICATE_MD
;
1428 udf_debug("Metadata Ident suffix=0x%x\n",
1429 le16_to_cpu(*(__le16
*)
1430 mdm
->partIdent
.identSuffix
));
1431 udf_debug("Metadata part num=%d\n",
1432 le16_to_cpu(mdm
->partitionNum
));
1433 udf_debug("Metadata part alloc unit size=%d\n",
1434 le32_to_cpu(mdm
->allocUnitSize
));
1435 udf_debug("Metadata file loc=%d\n",
1436 le32_to_cpu(mdm
->metadataFileLoc
));
1437 udf_debug("Mirror file loc=%d\n",
1438 le32_to_cpu(mdm
->metadataMirrorFileLoc
));
1439 udf_debug("Bitmap file loc=%d\n",
1440 le32_to_cpu(mdm
->metadataBitmapFileLoc
));
1441 udf_debug("Flags: %d %d\n",
1442 mdata
->s_flags
, mdm
->flags
);
1444 udf_debug("Unknown ident: %s\n",
1445 upm2
->partIdent
.ident
);
1448 map
->s_volumeseqnum
= le16_to_cpu(upm2
->volSeqNum
);
1449 map
->s_partition_num
= le16_to_cpu(upm2
->partitionNum
);
1451 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1452 i
, map
->s_partition_num
, type
, map
->s_volumeseqnum
);
1456 struct long_ad
*la
= (struct long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
1458 *fileset
= lelb_to_cpu(la
->extLocation
);
1459 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1460 fileset
->logicalBlockNum
,
1461 fileset
->partitionReferenceNum
);
1463 if (lvd
->integritySeqExt
.extLength
)
1464 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
1472 * udf_load_logicalvolint
1475 static void udf_load_logicalvolint(struct super_block
*sb
, struct kernel_extent_ad loc
)
1477 struct buffer_head
*bh
= NULL
;
1479 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1480 struct logicalVolIntegrityDesc
*lvid
;
1482 while (loc
.extLength
> 0 &&
1483 (bh
= udf_read_tagged(sb
, loc
.extLocation
,
1484 loc
.extLocation
, &ident
)) &&
1485 ident
== TAG_IDENT_LVID
) {
1486 sbi
->s_lvid_bh
= bh
;
1487 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1489 if (lvid
->nextIntegrityExt
.extLength
)
1490 udf_load_logicalvolint(sb
,
1491 leea_to_cpu(lvid
->nextIntegrityExt
));
1493 if (sbi
->s_lvid_bh
!= bh
)
1495 loc
.extLength
-= sb
->s_blocksize
;
1498 if (sbi
->s_lvid_bh
!= bh
)
1503 * udf_process_sequence
1506 * Process a main/reserve volume descriptor sequence.
1509 * sb Pointer to _locked_ superblock.
1510 * block First block of first extent of the sequence.
1511 * lastblock Lastblock of first extent of the sequence.
1514 * July 1, 1997 - Andrew E. Mileski
1515 * Written, tested, and released.
1517 static noinline
int udf_process_sequence(struct super_block
*sb
, long block
,
1518 long lastblock
, struct kernel_lb_addr
*fileset
)
1520 struct buffer_head
*bh
= NULL
;
1521 struct udf_vds_record vds
[VDS_POS_LENGTH
];
1522 struct udf_vds_record
*curr
;
1523 struct generic_desc
*gd
;
1524 struct volDescPtr
*vdp
;
1528 long next_s
= 0, next_e
= 0;
1530 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
1533 * Read the main descriptor sequence and find which descriptors
1536 for (; (!done
&& block
<= lastblock
); block
++) {
1538 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1541 "Block %llu of volume descriptor sequence is corrupted or we could not read it\n",
1542 (unsigned long long)block
);
1546 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1547 gd
= (struct generic_desc
*)bh
->b_data
;
1548 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
1550 case TAG_IDENT_PVD
: /* ISO 13346 3/10.1 */
1551 curr
= &vds
[VDS_POS_PRIMARY_VOL_DESC
];
1552 if (vdsn
>= curr
->volDescSeqNum
) {
1553 curr
->volDescSeqNum
= vdsn
;
1554 curr
->block
= block
;
1557 case TAG_IDENT_VDP
: /* ISO 13346 3/10.3 */
1558 curr
= &vds
[VDS_POS_VOL_DESC_PTR
];
1559 if (vdsn
>= curr
->volDescSeqNum
) {
1560 curr
->volDescSeqNum
= vdsn
;
1561 curr
->block
= block
;
1563 vdp
= (struct volDescPtr
*)bh
->b_data
;
1564 next_s
= le32_to_cpu(
1565 vdp
->nextVolDescSeqExt
.extLocation
);
1566 next_e
= le32_to_cpu(
1567 vdp
->nextVolDescSeqExt
.extLength
);
1568 next_e
= next_e
>> sb
->s_blocksize_bits
;
1572 case TAG_IDENT_IUVD
: /* ISO 13346 3/10.4 */
1573 curr
= &vds
[VDS_POS_IMP_USE_VOL_DESC
];
1574 if (vdsn
>= curr
->volDescSeqNum
) {
1575 curr
->volDescSeqNum
= vdsn
;
1576 curr
->block
= block
;
1579 case TAG_IDENT_PD
: /* ISO 13346 3/10.5 */
1580 curr
= &vds
[VDS_POS_PARTITION_DESC
];
1582 curr
->block
= block
;
1584 case TAG_IDENT_LVD
: /* ISO 13346 3/10.6 */
1585 curr
= &vds
[VDS_POS_LOGICAL_VOL_DESC
];
1586 if (vdsn
>= curr
->volDescSeqNum
) {
1587 curr
->volDescSeqNum
= vdsn
;
1588 curr
->block
= block
;
1591 case TAG_IDENT_USD
: /* ISO 13346 3/10.8 */
1592 curr
= &vds
[VDS_POS_UNALLOC_SPACE_DESC
];
1593 if (vdsn
>= curr
->volDescSeqNum
) {
1594 curr
->volDescSeqNum
= vdsn
;
1595 curr
->block
= block
;
1598 case TAG_IDENT_TD
: /* ISO 13346 3/10.9 */
1599 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1603 next_s
= next_e
= 0;
1611 * Now read interesting descriptors again and process them
1612 * in a suitable order
1614 if (!vds
[VDS_POS_PRIMARY_VOL_DESC
].block
) {
1615 udf_err(sb
, "Primary Volume Descriptor not found!\n");
1618 if (udf_load_pvoldesc(sb
, vds
[VDS_POS_PRIMARY_VOL_DESC
].block
))
1621 if (vds
[VDS_POS_LOGICAL_VOL_DESC
].block
&& udf_load_logicalvol(sb
,
1622 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
, fileset
))
1625 if (vds
[VDS_POS_PARTITION_DESC
].block
) {
1627 * We rescan the whole descriptor sequence to find
1628 * partition descriptor blocks and process them.
1630 for (block
= vds
[VDS_POS_PARTITION_DESC
].block
;
1631 block
< vds
[VDS_POS_TERMINATING_DESC
].block
;
1633 if (udf_load_partdesc(sb
, block
))
1640 static int udf_load_sequence(struct super_block
*sb
, struct buffer_head
*bh
,
1641 struct kernel_lb_addr
*fileset
)
1643 struct anchorVolDescPtr
*anchor
;
1644 long main_s
, main_e
, reserve_s
, reserve_e
;
1646 anchor
= (struct anchorVolDescPtr
*)bh
->b_data
;
1648 /* Locate the main sequence */
1649 main_s
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLocation
);
1650 main_e
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLength
);
1651 main_e
= main_e
>> sb
->s_blocksize_bits
;
1654 /* Locate the reserve sequence */
1655 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1656 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1657 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1658 reserve_e
+= reserve_s
;
1660 /* Process the main & reserve sequences */
1661 /* responsible for finding the PartitionDesc(s) */
1662 if (!udf_process_sequence(sb
, main_s
, main_e
, fileset
))
1664 udf_sb_free_partitions(sb
);
1665 if (!udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
))
1667 udf_sb_free_partitions(sb
);
1672 * Check whether there is an anchor block in the given block and
1673 * load Volume Descriptor Sequence if so.
1675 static int udf_check_anchor_block(struct super_block
*sb
, sector_t block
,
1676 struct kernel_lb_addr
*fileset
)
1678 struct buffer_head
*bh
;
1682 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_VARCONV
) &&
1683 udf_fixed_to_variable(block
) >=
1684 sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
)
1687 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1690 if (ident
!= TAG_IDENT_AVDP
) {
1694 ret
= udf_load_sequence(sb
, bh
, fileset
);
1699 /* Search for an anchor volume descriptor pointer */
1700 static sector_t
udf_scan_anchors(struct super_block
*sb
, sector_t lastblock
,
1701 struct kernel_lb_addr
*fileset
)
1705 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1708 /* First try user provided anchor */
1709 if (sbi
->s_anchor
) {
1710 if (udf_check_anchor_block(sb
, sbi
->s_anchor
, fileset
))
1714 * according to spec, anchor is in either:
1718 * however, if the disc isn't closed, it could be 512.
1720 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 256, fileset
))
1723 * The trouble is which block is the last one. Drives often misreport
1724 * this so we try various possibilities.
1726 last
[last_count
++] = lastblock
;
1728 last
[last_count
++] = lastblock
- 1;
1729 last
[last_count
++] = lastblock
+ 1;
1731 last
[last_count
++] = lastblock
- 2;
1732 if (lastblock
>= 150)
1733 last
[last_count
++] = lastblock
- 150;
1734 if (lastblock
>= 152)
1735 last
[last_count
++] = lastblock
- 152;
1737 for (i
= 0; i
< last_count
; i
++) {
1738 if (last
[i
] >= sb
->s_bdev
->bd_inode
->i_size
>>
1739 sb
->s_blocksize_bits
)
1741 if (udf_check_anchor_block(sb
, last
[i
], fileset
))
1745 if (udf_check_anchor_block(sb
, last
[i
] - 256, fileset
))
1749 /* Finally try block 512 in case media is open */
1750 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 512, fileset
))
1756 * Find an anchor volume descriptor and load Volume Descriptor Sequence from
1757 * area specified by it. The function expects sbi->s_lastblock to be the last
1758 * block on the media.
1760 * Return 1 if ok, 0 if not found.
1763 static int udf_find_anchor(struct super_block
*sb
,
1764 struct kernel_lb_addr
*fileset
)
1767 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1769 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1773 /* No anchor found? Try VARCONV conversion of block numbers */
1774 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
1775 /* Firstly, we try to not convert number of the last block */
1776 lastblock
= udf_scan_anchors(sb
,
1777 udf_variable_to_fixed(sbi
->s_last_block
),
1782 /* Secondly, we try with converted number of the last block */
1783 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1785 /* VARCONV didn't help. Clear it. */
1786 UDF_CLEAR_FLAG(sb
, UDF_FLAG_VARCONV
);
1790 sbi
->s_last_block
= lastblock
;
1795 * Check Volume Structure Descriptor, find Anchor block and load Volume
1796 * Descriptor Sequence
1798 static int udf_load_vrs(struct super_block
*sb
, struct udf_options
*uopt
,
1799 int silent
, struct kernel_lb_addr
*fileset
)
1801 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1804 if (!sb_set_blocksize(sb
, uopt
->blocksize
)) {
1806 udf_warn(sb
, "Bad block size\n");
1809 sbi
->s_last_block
= uopt
->lastblock
;
1811 /* Check that it is NSR02 compliant */
1812 nsr_off
= udf_check_vsd(sb
);
1815 udf_warn(sb
, "No VRS found\n");
1819 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1820 if (!sbi
->s_last_block
)
1821 sbi
->s_last_block
= udf_get_last_block(sb
);
1823 udf_debug("Validity check skipped because of novrs option\n");
1826 /* Look for anchor block and load Volume Descriptor Sequence */
1827 sbi
->s_anchor
= uopt
->anchor
;
1828 if (!udf_find_anchor(sb
, fileset
)) {
1830 udf_warn(sb
, "No anchor found\n");
1836 static void udf_open_lvid(struct super_block
*sb
)
1838 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1839 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1840 struct logicalVolIntegrityDesc
*lvid
;
1841 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1846 mutex_lock(&sbi
->s_alloc_mutex
);
1847 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1848 lvidiu
= udf_sb_lvidiu(sbi
);
1850 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1851 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1852 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
,
1854 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN
);
1856 lvid
->descTag
.descCRC
= cpu_to_le16(
1857 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1858 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1860 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1861 mark_buffer_dirty(bh
);
1862 sbi
->s_lvid_dirty
= 0;
1863 mutex_unlock(&sbi
->s_alloc_mutex
);
1866 static void udf_close_lvid(struct super_block
*sb
)
1868 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1869 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1870 struct logicalVolIntegrityDesc
*lvid
;
1871 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1876 mutex_lock(&sbi
->s_alloc_mutex
);
1877 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1878 lvidiu
= udf_sb_lvidiu(sbi
);
1879 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1880 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1881 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
, CURRENT_TIME
);
1882 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(lvidiu
->maxUDFWriteRev
))
1883 lvidiu
->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
1884 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFReadRev
))
1885 lvidiu
->minUDFReadRev
= cpu_to_le16(sbi
->s_udfrev
);
1886 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFWriteRev
))
1887 lvidiu
->minUDFWriteRev
= cpu_to_le16(sbi
->s_udfrev
);
1888 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE
);
1890 lvid
->descTag
.descCRC
= cpu_to_le16(
1891 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1892 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1894 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1896 * We set buffer uptodate unconditionally here to avoid spurious
1897 * warnings from mark_buffer_dirty() when previous EIO has marked
1898 * the buffer as !uptodate
1900 set_buffer_uptodate(bh
);
1901 mark_buffer_dirty(bh
);
1902 sbi
->s_lvid_dirty
= 0;
1903 mutex_unlock(&sbi
->s_alloc_mutex
);
1906 u64
lvid_get_unique_id(struct super_block
*sb
)
1908 struct buffer_head
*bh
;
1909 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1910 struct logicalVolIntegrityDesc
*lvid
;
1911 struct logicalVolHeaderDesc
*lvhd
;
1915 bh
= sbi
->s_lvid_bh
;
1919 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1920 lvhd
= (struct logicalVolHeaderDesc
*)lvid
->logicalVolContentsUse
;
1922 mutex_lock(&sbi
->s_alloc_mutex
);
1923 ret
= uniqueID
= le64_to_cpu(lvhd
->uniqueID
);
1924 if (!(++uniqueID
& 0xFFFFFFFF))
1926 lvhd
->uniqueID
= cpu_to_le64(uniqueID
);
1927 mutex_unlock(&sbi
->s_alloc_mutex
);
1928 mark_buffer_dirty(bh
);
1933 static int udf_fill_super(struct super_block
*sb
, void *options
, int silent
)
1936 struct inode
*inode
= NULL
;
1937 struct udf_options uopt
;
1938 struct kernel_lb_addr rootdir
, fileset
;
1939 struct udf_sb_info
*sbi
;
1941 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
) | (1 << UDF_FLAG_STRICT
);
1945 uopt
.fmode
= UDF_INVALID_MODE
;
1946 uopt
.dmode
= UDF_INVALID_MODE
;
1948 sbi
= kzalloc(sizeof(struct udf_sb_info
), GFP_KERNEL
);
1952 sb
->s_fs_info
= sbi
;
1954 mutex_init(&sbi
->s_alloc_mutex
);
1956 if (!udf_parse_options((char *)options
, &uopt
, false))
1959 if (uopt
.flags
& (1 << UDF_FLAG_UTF8
) &&
1960 uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) {
1961 udf_err(sb
, "utf8 cannot be combined with iocharset\n");
1964 #ifdef CONFIG_UDF_NLS
1965 if ((uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) && !uopt
.nls_map
) {
1966 uopt
.nls_map
= load_nls_default();
1968 uopt
.flags
&= ~(1 << UDF_FLAG_NLS_MAP
);
1970 udf_debug("Using default NLS map\n");
1973 if (!(uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)))
1974 uopt
.flags
|= (1 << UDF_FLAG_UTF8
);
1976 fileset
.logicalBlockNum
= 0xFFFFFFFF;
1977 fileset
.partitionReferenceNum
= 0xFFFF;
1979 sbi
->s_flags
= uopt
.flags
;
1980 sbi
->s_uid
= uopt
.uid
;
1981 sbi
->s_gid
= uopt
.gid
;
1982 sbi
->s_umask
= uopt
.umask
;
1983 sbi
->s_fmode
= uopt
.fmode
;
1984 sbi
->s_dmode
= uopt
.dmode
;
1985 sbi
->s_nls_map
= uopt
.nls_map
;
1986 rwlock_init(&sbi
->s_cred_lock
);
1988 if (uopt
.session
== 0xFFFFFFFF)
1989 sbi
->s_session
= udf_get_last_session(sb
);
1991 sbi
->s_session
= uopt
.session
;
1993 udf_debug("Multi-session=%d\n", sbi
->s_session
);
1995 /* Fill in the rest of the superblock */
1996 sb
->s_op
= &udf_sb_ops
;
1997 sb
->s_export_op
= &udf_export_ops
;
1999 sb
->s_magic
= UDF_SUPER_MAGIC
;
2000 sb
->s_time_gran
= 1000;
2002 if (uopt
.flags
& (1 << UDF_FLAG_BLOCKSIZE_SET
)) {
2003 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
2005 uopt
.blocksize
= bdev_logical_block_size(sb
->s_bdev
);
2006 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
2007 if (!ret
&& uopt
.blocksize
!= UDF_DEFAULT_BLOCKSIZE
) {
2009 pr_notice("Rescanning with blocksize %d\n",
2010 UDF_DEFAULT_BLOCKSIZE
);
2011 brelse(sbi
->s_lvid_bh
);
2012 sbi
->s_lvid_bh
= NULL
;
2013 uopt
.blocksize
= UDF_DEFAULT_BLOCKSIZE
;
2014 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
2018 udf_warn(sb
, "No partition found (1)\n");
2022 udf_debug("Lastblock=%d\n", sbi
->s_last_block
);
2024 if (sbi
->s_lvid_bh
) {
2025 struct logicalVolIntegrityDescImpUse
*lvidiu
=
2027 uint16_t minUDFReadRev
= le16_to_cpu(lvidiu
->minUDFReadRev
);
2028 uint16_t minUDFWriteRev
= le16_to_cpu(lvidiu
->minUDFWriteRev
);
2029 /* uint16_t maxUDFWriteRev =
2030 le16_to_cpu(lvidiu->maxUDFWriteRev); */
2032 if (minUDFReadRev
> UDF_MAX_READ_VERSION
) {
2033 udf_err(sb
, "minUDFReadRev=%x (max is %x)\n",
2034 le16_to_cpu(lvidiu
->minUDFReadRev
),
2035 UDF_MAX_READ_VERSION
);
2037 } else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
)
2038 sb
->s_flags
|= MS_RDONLY
;
2040 sbi
->s_udfrev
= minUDFWriteRev
;
2042 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
2043 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
2044 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
2045 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
2048 if (!sbi
->s_partitions
) {
2049 udf_warn(sb
, "No partition found (2)\n");
2053 if (sbi
->s_partmaps
[sbi
->s_partition
].s_partition_flags
&
2054 UDF_PART_FLAG_READ_ONLY
) {
2055 pr_notice("Partition marked readonly; forcing readonly mount\n");
2056 sb
->s_flags
|= MS_RDONLY
;
2059 if (udf_find_fileset(sb
, &fileset
, &rootdir
)) {
2060 udf_warn(sb
, "No fileset found\n");
2065 struct timestamp ts
;
2066 udf_time_to_disk_stamp(&ts
, sbi
->s_record_time
);
2067 udf_info("Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
2068 sbi
->s_volume_ident
,
2069 le16_to_cpu(ts
.year
), ts
.month
, ts
.day
,
2070 ts
.hour
, ts
.minute
, le16_to_cpu(ts
.typeAndTimezone
));
2072 if (!(sb
->s_flags
& MS_RDONLY
))
2075 /* Assign the root inode */
2076 /* assign inodes by physical block number */
2077 /* perhaps it's not extensible enough, but for now ... */
2078 inode
= udf_iget(sb
, &rootdir
);
2080 udf_err(sb
, "Error in udf_iget, block=%d, partition=%d\n",
2081 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
2085 /* Allocate a dentry for the root inode */
2086 sb
->s_root
= d_make_root(inode
);
2088 udf_err(sb
, "Couldn't allocate root dentry\n");
2091 sb
->s_maxbytes
= MAX_LFS_FILESIZE
;
2092 sb
->s_max_links
= UDF_MAX_LINKS
;
2096 if (sbi
->s_vat_inode
)
2097 iput(sbi
->s_vat_inode
);
2098 #ifdef CONFIG_UDF_NLS
2099 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2100 unload_nls(sbi
->s_nls_map
);
2102 if (!(sb
->s_flags
& MS_RDONLY
))
2104 brelse(sbi
->s_lvid_bh
);
2105 udf_sb_free_partitions(sb
);
2107 sb
->s_fs_info
= NULL
;
2112 void _udf_err(struct super_block
*sb
, const char *function
,
2113 const char *fmt
, ...)
2115 struct va_format vaf
;
2118 va_start(args
, fmt
);
2123 pr_err("error (device %s): %s: %pV", sb
->s_id
, function
, &vaf
);
2128 void _udf_warn(struct super_block
*sb
, const char *function
,
2129 const char *fmt
, ...)
2131 struct va_format vaf
;
2134 va_start(args
, fmt
);
2139 pr_warn("warning (device %s): %s: %pV", sb
->s_id
, function
, &vaf
);
2144 static void udf_put_super(struct super_block
*sb
)
2146 struct udf_sb_info
*sbi
;
2150 if (sbi
->s_vat_inode
)
2151 iput(sbi
->s_vat_inode
);
2152 #ifdef CONFIG_UDF_NLS
2153 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2154 unload_nls(sbi
->s_nls_map
);
2156 if (!(sb
->s_flags
& MS_RDONLY
))
2158 brelse(sbi
->s_lvid_bh
);
2159 udf_sb_free_partitions(sb
);
2160 kfree(sb
->s_fs_info
);
2161 sb
->s_fs_info
= NULL
;
2164 static int udf_sync_fs(struct super_block
*sb
, int wait
)
2166 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2168 mutex_lock(&sbi
->s_alloc_mutex
);
2169 if (sbi
->s_lvid_dirty
) {
2171 * Blockdevice will be synced later so we don't have to submit
2174 mark_buffer_dirty(sbi
->s_lvid_bh
);
2175 sbi
->s_lvid_dirty
= 0;
2177 mutex_unlock(&sbi
->s_alloc_mutex
);
2182 static int udf_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
2184 struct super_block
*sb
= dentry
->d_sb
;
2185 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2186 struct logicalVolIntegrityDescImpUse
*lvidiu
;
2187 u64 id
= huge_encode_dev(sb
->s_bdev
->bd_dev
);
2189 if (sbi
->s_lvid_bh
!= NULL
)
2190 lvidiu
= udf_sb_lvidiu(sbi
);
2194 buf
->f_type
= UDF_SUPER_MAGIC
;
2195 buf
->f_bsize
= sb
->s_blocksize
;
2196 buf
->f_blocks
= sbi
->s_partmaps
[sbi
->s_partition
].s_partition_len
;
2197 buf
->f_bfree
= udf_count_free(sb
);
2198 buf
->f_bavail
= buf
->f_bfree
;
2199 buf
->f_files
= (lvidiu
!= NULL
? (le32_to_cpu(lvidiu
->numFiles
) +
2200 le32_to_cpu(lvidiu
->numDirs
)) : 0)
2202 buf
->f_ffree
= buf
->f_bfree
;
2203 buf
->f_namelen
= UDF_NAME_LEN
- 2;
2204 buf
->f_fsid
.val
[0] = (u32
)id
;
2205 buf
->f_fsid
.val
[1] = (u32
)(id
>> 32);
2210 static unsigned int udf_count_free_bitmap(struct super_block
*sb
,
2211 struct udf_bitmap
*bitmap
)
2213 struct buffer_head
*bh
= NULL
;
2214 unsigned int accum
= 0;
2216 int block
= 0, newblock
;
2217 struct kernel_lb_addr loc
;
2221 struct spaceBitmapDesc
*bm
;
2223 loc
.logicalBlockNum
= bitmap
->s_extPosition
;
2224 loc
.partitionReferenceNum
= UDF_SB(sb
)->s_partition
;
2225 bh
= udf_read_ptagged(sb
, &loc
, 0, &ident
);
2228 udf_err(sb
, "udf_count_free failed\n");
2230 } else if (ident
!= TAG_IDENT_SBD
) {
2232 udf_err(sb
, "udf_count_free failed\n");
2236 bm
= (struct spaceBitmapDesc
*)bh
->b_data
;
2237 bytes
= le32_to_cpu(bm
->numOfBytes
);
2238 index
= sizeof(struct spaceBitmapDesc
); /* offset in first block only */
2239 ptr
= (uint8_t *)bh
->b_data
;
2242 u32 cur_bytes
= min_t(u32
, bytes
, sb
->s_blocksize
- index
);
2243 accum
+= bitmap_weight((const unsigned long *)(ptr
+ index
),
2248 newblock
= udf_get_lb_pblock(sb
, &loc
, ++block
);
2249 bh
= udf_tread(sb
, newblock
);
2251 udf_debug("read failed\n");
2255 ptr
= (uint8_t *)bh
->b_data
;
2263 static unsigned int udf_count_free_table(struct super_block
*sb
,
2264 struct inode
*table
)
2266 unsigned int accum
= 0;
2268 struct kernel_lb_addr eloc
;
2270 struct extent_position epos
;
2272 mutex_lock(&UDF_SB(sb
)->s_alloc_mutex
);
2273 epos
.block
= UDF_I(table
)->i_location
;
2274 epos
.offset
= sizeof(struct unallocSpaceEntry
);
2277 while ((etype
= udf_next_aext(table
, &epos
, &eloc
, &elen
, 1)) != -1)
2278 accum
+= (elen
>> table
->i_sb
->s_blocksize_bits
);
2281 mutex_unlock(&UDF_SB(sb
)->s_alloc_mutex
);
2286 static unsigned int udf_count_free(struct super_block
*sb
)
2288 unsigned int accum
= 0;
2289 struct udf_sb_info
*sbi
;
2290 struct udf_part_map
*map
;
2293 if (sbi
->s_lvid_bh
) {
2294 struct logicalVolIntegrityDesc
*lvid
=
2295 (struct logicalVolIntegrityDesc
*)
2296 sbi
->s_lvid_bh
->b_data
;
2297 if (le32_to_cpu(lvid
->numOfPartitions
) > sbi
->s_partition
) {
2298 accum
= le32_to_cpu(
2299 lvid
->freeSpaceTable
[sbi
->s_partition
]);
2300 if (accum
== 0xFFFFFFFF)
2308 map
= &sbi
->s_partmaps
[sbi
->s_partition
];
2309 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
) {
2310 accum
+= udf_count_free_bitmap(sb
,
2311 map
->s_uspace
.s_bitmap
);
2313 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
) {
2314 accum
+= udf_count_free_bitmap(sb
,
2315 map
->s_fspace
.s_bitmap
);
2320 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
) {
2321 accum
+= udf_count_free_table(sb
,
2322 map
->s_uspace
.s_table
);
2324 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
) {
2325 accum
+= udf_count_free_table(sb
,
2326 map
->s_fspace
.s_table
);