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/vfs.h>
52 #include <linux/vmalloc.h>
53 #include <linux/errno.h>
54 #include <linux/mount.h>
55 #include <linux/seq_file.h>
56 #include <linux/bitmap.h>
57 #include <linux/crc-itu-t.h>
58 #include <linux/log2.h>
59 #include <asm/byteorder.h>
64 #include <linux/init.h>
65 #include <linux/uaccess.h>
67 #define VDS_POS_PRIMARY_VOL_DESC 0
68 #define VDS_POS_UNALLOC_SPACE_DESC 1
69 #define VDS_POS_LOGICAL_VOL_DESC 2
70 #define VDS_POS_PARTITION_DESC 3
71 #define VDS_POS_IMP_USE_VOL_DESC 4
72 #define VDS_POS_VOL_DESC_PTR 5
73 #define VDS_POS_TERMINATING_DESC 6
74 #define VDS_POS_LENGTH 7
76 #define UDF_DEFAULT_BLOCKSIZE 2048
78 #define VSD_FIRST_SECTOR_OFFSET 32768
79 #define VSD_MAX_SECTOR_OFFSET 0x800000
81 enum { UDF_MAX_LINKS
= 0xffff };
83 /* These are the "meat" - everything else is stuffing */
84 static int udf_fill_super(struct super_block
*, void *, int);
85 static void udf_put_super(struct super_block
*);
86 static int udf_sync_fs(struct super_block
*, int);
87 static int udf_remount_fs(struct super_block
*, int *, char *);
88 static void udf_load_logicalvolint(struct super_block
*, struct kernel_extent_ad
);
89 static int udf_find_fileset(struct super_block
*, struct kernel_lb_addr
*,
90 struct kernel_lb_addr
*);
91 static void udf_load_fileset(struct super_block
*, struct buffer_head
*,
92 struct kernel_lb_addr
*);
93 static void udf_open_lvid(struct super_block
*);
94 static void udf_close_lvid(struct super_block
*);
95 static unsigned int udf_count_free(struct super_block
*);
96 static int udf_statfs(struct dentry
*, struct kstatfs
*);
97 static int udf_show_options(struct seq_file
*, struct dentry
*);
99 struct logicalVolIntegrityDescImpUse
*udf_sb_lvidiu(struct super_block
*sb
)
101 struct logicalVolIntegrityDesc
*lvid
;
102 unsigned int partnum
;
105 if (!UDF_SB(sb
)->s_lvid_bh
)
107 lvid
= (struct logicalVolIntegrityDesc
*)UDF_SB(sb
)->s_lvid_bh
->b_data
;
108 partnum
= le32_to_cpu(lvid
->numOfPartitions
);
109 if ((sb
->s_blocksize
- sizeof(struct logicalVolIntegrityDescImpUse
) -
110 offsetof(struct logicalVolIntegrityDesc
, impUse
)) /
111 (2 * sizeof(uint32_t)) < partnum
) {
112 udf_err(sb
, "Logical volume integrity descriptor corrupted "
113 "(numOfPartitions = %u)!\n", partnum
);
116 /* The offset is to skip freeSpaceTable and sizeTable arrays */
117 offset
= partnum
* 2 * sizeof(uint32_t);
118 return (struct logicalVolIntegrityDescImpUse
*)&(lvid
->impUse
[offset
]);
121 /* UDF filesystem type */
122 static struct dentry
*udf_mount(struct file_system_type
*fs_type
,
123 int flags
, const char *dev_name
, void *data
)
125 return mount_bdev(fs_type
, flags
, dev_name
, data
, udf_fill_super
);
128 static struct file_system_type udf_fstype
= {
129 .owner
= THIS_MODULE
,
132 .kill_sb
= kill_block_super
,
133 .fs_flags
= FS_REQUIRES_DEV
,
135 MODULE_ALIAS_FS("udf");
137 static struct kmem_cache
*udf_inode_cachep
;
139 static struct inode
*udf_alloc_inode(struct super_block
*sb
)
141 struct udf_inode_info
*ei
;
142 ei
= kmem_cache_alloc(udf_inode_cachep
, GFP_KERNEL
);
147 ei
->i_lenExtents
= 0;
148 ei
->i_next_alloc_block
= 0;
149 ei
->i_next_alloc_goal
= 0;
151 init_rwsem(&ei
->i_data_sem
);
152 ei
->cached_extent
.lstart
= -1;
153 spin_lock_init(&ei
->i_extent_cache_lock
);
155 return &ei
->vfs_inode
;
158 static void udf_i_callback(struct rcu_head
*head
)
160 struct inode
*inode
= container_of(head
, struct inode
, i_rcu
);
161 kmem_cache_free(udf_inode_cachep
, UDF_I(inode
));
164 static void udf_destroy_inode(struct inode
*inode
)
166 call_rcu(&inode
->i_rcu
, udf_i_callback
);
169 static void init_once(void *foo
)
171 struct udf_inode_info
*ei
= (struct udf_inode_info
*)foo
;
173 ei
->i_ext
.i_data
= NULL
;
174 inode_init_once(&ei
->vfs_inode
);
177 static int __init
init_inodecache(void)
179 udf_inode_cachep
= kmem_cache_create("udf_inode_cache",
180 sizeof(struct udf_inode_info
),
181 0, (SLAB_RECLAIM_ACCOUNT
|
185 if (!udf_inode_cachep
)
190 static void destroy_inodecache(void)
193 * Make sure all delayed rcu free inodes are flushed before we
197 kmem_cache_destroy(udf_inode_cachep
);
200 /* Superblock operations */
201 static const struct super_operations udf_sb_ops
= {
202 .alloc_inode
= udf_alloc_inode
,
203 .destroy_inode
= udf_destroy_inode
,
204 .write_inode
= udf_write_inode
,
205 .evict_inode
= udf_evict_inode
,
206 .put_super
= udf_put_super
,
207 .sync_fs
= udf_sync_fs
,
208 .statfs
= udf_statfs
,
209 .remount_fs
= udf_remount_fs
,
210 .show_options
= udf_show_options
,
215 unsigned int blocksize
;
216 unsigned int session
;
217 unsigned int lastblock
;
220 unsigned short partition
;
221 unsigned int fileset
;
222 unsigned int rootdir
;
229 struct nls_table
*nls_map
;
232 static int __init
init_udf_fs(void)
236 err
= init_inodecache();
239 err
= register_filesystem(&udf_fstype
);
246 destroy_inodecache();
252 static void __exit
exit_udf_fs(void)
254 unregister_filesystem(&udf_fstype
);
255 destroy_inodecache();
258 module_init(init_udf_fs
)
259 module_exit(exit_udf_fs
)
261 static int udf_sb_alloc_partition_maps(struct super_block
*sb
, u32 count
)
263 struct udf_sb_info
*sbi
= UDF_SB(sb
);
265 sbi
->s_partmaps
= kcalloc(count
, sizeof(struct udf_part_map
),
267 if (!sbi
->s_partmaps
) {
268 udf_err(sb
, "Unable to allocate space for %d partition maps\n",
270 sbi
->s_partitions
= 0;
274 sbi
->s_partitions
= count
;
278 static void udf_sb_free_bitmap(struct udf_bitmap
*bitmap
)
281 int nr_groups
= bitmap
->s_nr_groups
;
283 for (i
= 0; i
< nr_groups
; i
++)
284 if (bitmap
->s_block_bitmap
[i
])
285 brelse(bitmap
->s_block_bitmap
[i
]);
290 static void udf_free_partition(struct udf_part_map
*map
)
293 struct udf_meta_data
*mdata
;
295 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
)
296 iput(map
->s_uspace
.s_table
);
297 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
)
298 iput(map
->s_fspace
.s_table
);
299 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
)
300 udf_sb_free_bitmap(map
->s_uspace
.s_bitmap
);
301 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
)
302 udf_sb_free_bitmap(map
->s_fspace
.s_bitmap
);
303 if (map
->s_partition_type
== UDF_SPARABLE_MAP15
)
304 for (i
= 0; i
< 4; i
++)
305 brelse(map
->s_type_specific
.s_sparing
.s_spar_map
[i
]);
306 else if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
307 mdata
= &map
->s_type_specific
.s_metadata
;
308 iput(mdata
->s_metadata_fe
);
309 mdata
->s_metadata_fe
= NULL
;
311 iput(mdata
->s_mirror_fe
);
312 mdata
->s_mirror_fe
= NULL
;
314 iput(mdata
->s_bitmap_fe
);
315 mdata
->s_bitmap_fe
= NULL
;
319 static void udf_sb_free_partitions(struct super_block
*sb
)
321 struct udf_sb_info
*sbi
= UDF_SB(sb
);
323 if (sbi
->s_partmaps
== NULL
)
325 for (i
= 0; i
< sbi
->s_partitions
; i
++)
326 udf_free_partition(&sbi
->s_partmaps
[i
]);
327 kfree(sbi
->s_partmaps
);
328 sbi
->s_partmaps
= NULL
;
331 static int udf_show_options(struct seq_file
*seq
, struct dentry
*root
)
333 struct super_block
*sb
= root
->d_sb
;
334 struct udf_sb_info
*sbi
= UDF_SB(sb
);
336 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_STRICT
))
337 seq_puts(seq
, ",nostrict");
338 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_BLOCKSIZE_SET
))
339 seq_printf(seq
, ",bs=%lu", sb
->s_blocksize
);
340 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNHIDE
))
341 seq_puts(seq
, ",unhide");
342 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNDELETE
))
343 seq_puts(seq
, ",undelete");
344 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_AD_IN_ICB
))
345 seq_puts(seq
, ",noadinicb");
346 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_SHORT_AD
))
347 seq_puts(seq
, ",shortad");
348 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_FORGET
))
349 seq_puts(seq
, ",uid=forget");
350 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_IGNORE
))
351 seq_puts(seq
, ",uid=ignore");
352 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_FORGET
))
353 seq_puts(seq
, ",gid=forget");
354 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_IGNORE
))
355 seq_puts(seq
, ",gid=ignore");
356 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_SET
))
357 seq_printf(seq
, ",uid=%u", from_kuid(&init_user_ns
, sbi
->s_uid
));
358 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_SET
))
359 seq_printf(seq
, ",gid=%u", from_kgid(&init_user_ns
, sbi
->s_gid
));
360 if (sbi
->s_umask
!= 0)
361 seq_printf(seq
, ",umask=%ho", sbi
->s_umask
);
362 if (sbi
->s_fmode
!= UDF_INVALID_MODE
)
363 seq_printf(seq
, ",mode=%ho", sbi
->s_fmode
);
364 if (sbi
->s_dmode
!= UDF_INVALID_MODE
)
365 seq_printf(seq
, ",dmode=%ho", sbi
->s_dmode
);
366 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_SESSION_SET
))
367 seq_printf(seq
, ",session=%u", sbi
->s_session
);
368 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_LASTBLOCK_SET
))
369 seq_printf(seq
, ",lastblock=%u", sbi
->s_last_block
);
370 if (sbi
->s_anchor
!= 0)
371 seq_printf(seq
, ",anchor=%u", sbi
->s_anchor
);
373 * volume, partition, fileset and rootdir seem to be ignored
376 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UTF8
))
377 seq_puts(seq
, ",utf8");
378 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
) && sbi
->s_nls_map
)
379 seq_printf(seq
, ",iocharset=%s", sbi
->s_nls_map
->charset
);
388 * Parse mount options.
391 * The following mount options are supported:
393 * gid= Set the default group.
394 * umask= Set the default umask.
395 * mode= Set the default file permissions.
396 * dmode= Set the default directory permissions.
397 * uid= Set the default user.
398 * bs= Set the block size.
399 * unhide Show otherwise hidden files.
400 * undelete Show deleted files in lists.
401 * adinicb Embed data in the inode (default)
402 * noadinicb Don't embed data in the inode
403 * shortad Use short ad's
404 * longad Use long ad's (default)
405 * nostrict Unset strict conformance
406 * iocharset= Set the NLS character set
408 * The remaining are for debugging and disaster recovery:
410 * novrs Skip volume sequence recognition
412 * The following expect a offset from 0.
414 * session= Set the CDROM session (default= last session)
415 * anchor= Override standard anchor location. (default= 256)
416 * volume= Override the VolumeDesc location. (unused)
417 * partition= Override the PartitionDesc location. (unused)
418 * lastblock= Set the last block of the filesystem/
420 * The following expect a offset from the partition root.
422 * fileset= Override the fileset block location. (unused)
423 * rootdir= Override the root directory location. (unused)
424 * WARNING: overriding the rootdir to a non-directory may
425 * yield highly unpredictable results.
428 * options Pointer to mount options string.
429 * uopts Pointer to mount options variable.
432 * <return> 1 Mount options parsed okay.
433 * <return> 0 Error parsing mount options.
436 * July 1, 1997 - Andrew E. Mileski
437 * Written, tested, and released.
441 Opt_novrs
, Opt_nostrict
, Opt_bs
, Opt_unhide
, Opt_undelete
,
442 Opt_noadinicb
, Opt_adinicb
, Opt_shortad
, Opt_longad
,
443 Opt_gid
, Opt_uid
, Opt_umask
, Opt_session
, Opt_lastblock
,
444 Opt_anchor
, Opt_volume
, Opt_partition
, Opt_fileset
,
445 Opt_rootdir
, Opt_utf8
, Opt_iocharset
,
446 Opt_err
, Opt_uforget
, Opt_uignore
, Opt_gforget
, Opt_gignore
,
450 static const match_table_t tokens
= {
451 {Opt_novrs
, "novrs"},
452 {Opt_nostrict
, "nostrict"},
454 {Opt_unhide
, "unhide"},
455 {Opt_undelete
, "undelete"},
456 {Opt_noadinicb
, "noadinicb"},
457 {Opt_adinicb
, "adinicb"},
458 {Opt_shortad
, "shortad"},
459 {Opt_longad
, "longad"},
460 {Opt_uforget
, "uid=forget"},
461 {Opt_uignore
, "uid=ignore"},
462 {Opt_gforget
, "gid=forget"},
463 {Opt_gignore
, "gid=ignore"},
466 {Opt_umask
, "umask=%o"},
467 {Opt_session
, "session=%u"},
468 {Opt_lastblock
, "lastblock=%u"},
469 {Opt_anchor
, "anchor=%u"},
470 {Opt_volume
, "volume=%u"},
471 {Opt_partition
, "partition=%u"},
472 {Opt_fileset
, "fileset=%u"},
473 {Opt_rootdir
, "rootdir=%u"},
475 {Opt_iocharset
, "iocharset=%s"},
476 {Opt_fmode
, "mode=%o"},
477 {Opt_dmode
, "dmode=%o"},
481 static int udf_parse_options(char *options
, struct udf_options
*uopt
,
488 uopt
->partition
= 0xFFFF;
489 uopt
->session
= 0xFFFFFFFF;
492 uopt
->volume
= 0xFFFFFFFF;
493 uopt
->rootdir
= 0xFFFFFFFF;
494 uopt
->fileset
= 0xFFFFFFFF;
495 uopt
->nls_map
= NULL
;
500 while ((p
= strsep(&options
, ",")) != NULL
) {
501 substring_t args
[MAX_OPT_ARGS
];
507 token
= match_token(p
, tokens
, args
);
513 if (match_int(&args
[0], &option
))
516 if (n
!= 512 && n
!= 1024 && n
!= 2048 && n
!= 4096)
519 uopt
->flags
|= (1 << UDF_FLAG_BLOCKSIZE_SET
);
522 uopt
->flags
|= (1 << UDF_FLAG_UNHIDE
);
525 uopt
->flags
|= (1 << UDF_FLAG_UNDELETE
);
528 uopt
->flags
&= ~(1 << UDF_FLAG_USE_AD_IN_ICB
);
531 uopt
->flags
|= (1 << UDF_FLAG_USE_AD_IN_ICB
);
534 uopt
->flags
|= (1 << UDF_FLAG_USE_SHORT_AD
);
537 uopt
->flags
&= ~(1 << UDF_FLAG_USE_SHORT_AD
);
540 if (match_int(args
, &option
))
542 uopt
->gid
= make_kgid(current_user_ns(), option
);
543 if (!gid_valid(uopt
->gid
))
545 uopt
->flags
|= (1 << UDF_FLAG_GID_SET
);
548 if (match_int(args
, &option
))
550 uopt
->uid
= make_kuid(current_user_ns(), option
);
551 if (!uid_valid(uopt
->uid
))
553 uopt
->flags
|= (1 << UDF_FLAG_UID_SET
);
556 if (match_octal(args
, &option
))
558 uopt
->umask
= option
;
561 uopt
->flags
&= ~(1 << UDF_FLAG_STRICT
);
564 if (match_int(args
, &option
))
566 uopt
->session
= option
;
568 uopt
->flags
|= (1 << UDF_FLAG_SESSION_SET
);
571 if (match_int(args
, &option
))
573 uopt
->lastblock
= option
;
575 uopt
->flags
|= (1 << UDF_FLAG_LASTBLOCK_SET
);
578 if (match_int(args
, &option
))
580 uopt
->anchor
= option
;
583 if (match_int(args
, &option
))
585 uopt
->volume
= option
;
588 if (match_int(args
, &option
))
590 uopt
->partition
= option
;
593 if (match_int(args
, &option
))
595 uopt
->fileset
= option
;
598 if (match_int(args
, &option
))
600 uopt
->rootdir
= option
;
603 uopt
->flags
|= (1 << UDF_FLAG_UTF8
);
605 #ifdef CONFIG_UDF_NLS
607 uopt
->nls_map
= load_nls(args
[0].from
);
608 uopt
->flags
|= (1 << UDF_FLAG_NLS_MAP
);
612 uopt
->flags
|= (1 << UDF_FLAG_UID_IGNORE
);
615 uopt
->flags
|= (1 << UDF_FLAG_UID_FORGET
);
618 uopt
->flags
|= (1 << UDF_FLAG_GID_IGNORE
);
621 uopt
->flags
|= (1 << UDF_FLAG_GID_FORGET
);
624 if (match_octal(args
, &option
))
626 uopt
->fmode
= option
& 0777;
629 if (match_octal(args
, &option
))
631 uopt
->dmode
= option
& 0777;
634 pr_err("bad mount option \"%s\" or missing value\n", p
);
641 static int udf_remount_fs(struct super_block
*sb
, int *flags
, char *options
)
643 struct udf_options uopt
;
644 struct udf_sb_info
*sbi
= UDF_SB(sb
);
646 struct logicalVolIntegrityDescImpUse
*lvidiu
= udf_sb_lvidiu(sb
);
650 int write_rev
= le16_to_cpu(lvidiu
->minUDFWriteRev
);
651 if (write_rev
> UDF_MAX_WRITE_VERSION
&& !(*flags
& MS_RDONLY
))
655 uopt
.flags
= sbi
->s_flags
;
656 uopt
.uid
= sbi
->s_uid
;
657 uopt
.gid
= sbi
->s_gid
;
658 uopt
.umask
= sbi
->s_umask
;
659 uopt
.fmode
= sbi
->s_fmode
;
660 uopt
.dmode
= sbi
->s_dmode
;
662 if (!udf_parse_options(options
, &uopt
, true))
665 write_lock(&sbi
->s_cred_lock
);
666 sbi
->s_flags
= uopt
.flags
;
667 sbi
->s_uid
= uopt
.uid
;
668 sbi
->s_gid
= uopt
.gid
;
669 sbi
->s_umask
= uopt
.umask
;
670 sbi
->s_fmode
= uopt
.fmode
;
671 sbi
->s_dmode
= uopt
.dmode
;
672 write_unlock(&sbi
->s_cred_lock
);
674 if ((*flags
& MS_RDONLY
) == (sb
->s_flags
& MS_RDONLY
))
677 if (*flags
& MS_RDONLY
)
686 /* Check Volume Structure Descriptors (ECMA 167 2/9.1) */
687 /* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
688 static loff_t
udf_check_vsd(struct super_block
*sb
)
690 struct volStructDesc
*vsd
= NULL
;
691 loff_t sector
= VSD_FIRST_SECTOR_OFFSET
;
693 struct buffer_head
*bh
= NULL
;
696 struct udf_sb_info
*sbi
;
699 if (sb
->s_blocksize
< sizeof(struct volStructDesc
))
700 sectorsize
= sizeof(struct volStructDesc
);
702 sectorsize
= sb
->s_blocksize
;
704 sector
+= (sbi
->s_session
<< sb
->s_blocksize_bits
);
706 udf_debug("Starting at sector %u (%ld byte sectors)\n",
707 (unsigned int)(sector
>> sb
->s_blocksize_bits
),
709 /* Process the sequence (if applicable). The hard limit on the sector
710 * offset is arbitrary, hopefully large enough so that all valid UDF
711 * filesystems will be recognised. There is no mention of an upper
712 * bound to the size of the volume recognition area in the standard.
713 * The limit will prevent the code to read all the sectors of a
714 * specially crafted image (like a bluray disc full of CD001 sectors),
715 * potentially causing minutes or even hours of uninterruptible I/O
716 * activity. This actually happened with uninitialised SSD partitions
717 * (all 0xFF) before the check for the limit and all valid IDs were
719 for (; !nsr02
&& !nsr03
&& sector
< VSD_MAX_SECTOR_OFFSET
;
720 sector
+= sectorsize
) {
722 bh
= udf_tread(sb
, sector
>> sb
->s_blocksize_bits
);
726 /* Look for ISO descriptors */
727 vsd
= (struct volStructDesc
*)(bh
->b_data
+
728 (sector
& (sb
->s_blocksize
- 1)));
730 if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_CD001
,
732 switch (vsd
->structType
) {
734 udf_debug("ISO9660 Boot Record found\n");
737 udf_debug("ISO9660 Primary Volume Descriptor found\n");
740 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
743 udf_debug("ISO9660 Volume Partition Descriptor found\n");
746 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
749 udf_debug("ISO9660 VRS (%u) found\n",
753 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_BEA01
,
756 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_TEA01
,
760 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR02
,
763 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR03
,
766 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_BOOT2
,
769 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_CDW02
,
773 /* invalid id : end of volume recognition area */
784 else if (!bh
&& sector
- (sbi
->s_session
<< sb
->s_blocksize_bits
) ==
785 VSD_FIRST_SECTOR_OFFSET
)
791 static int udf_find_fileset(struct super_block
*sb
,
792 struct kernel_lb_addr
*fileset
,
793 struct kernel_lb_addr
*root
)
795 struct buffer_head
*bh
= NULL
;
798 struct udf_sb_info
*sbi
;
800 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
801 fileset
->partitionReferenceNum
!= 0xFFFF) {
802 bh
= udf_read_ptagged(sb
, fileset
, 0, &ident
);
806 } else if (ident
!= TAG_IDENT_FSD
) {
815 /* Search backwards through the partitions */
816 struct kernel_lb_addr newfileset
;
818 /* --> cvg: FIXME - is it reasonable? */
821 for (newfileset
.partitionReferenceNum
= sbi
->s_partitions
- 1;
822 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
823 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
824 fileset
->partitionReferenceNum
== 0xFFFF);
825 newfileset
.partitionReferenceNum
--) {
826 lastblock
= sbi
->s_partmaps
827 [newfileset
.partitionReferenceNum
]
829 newfileset
.logicalBlockNum
= 0;
832 bh
= udf_read_ptagged(sb
, &newfileset
, 0,
835 newfileset
.logicalBlockNum
++;
842 struct spaceBitmapDesc
*sp
;
843 sp
= (struct spaceBitmapDesc
*)
845 newfileset
.logicalBlockNum
+= 1 +
846 ((le32_to_cpu(sp
->numOfBytes
) +
847 sizeof(struct spaceBitmapDesc
)
848 - 1) >> sb
->s_blocksize_bits
);
853 *fileset
= newfileset
;
856 newfileset
.logicalBlockNum
++;
861 } while (newfileset
.logicalBlockNum
< lastblock
&&
862 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
863 fileset
->partitionReferenceNum
== 0xFFFF);
867 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
868 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
) {
869 udf_debug("Fileset at block=%d, partition=%d\n",
870 fileset
->logicalBlockNum
,
871 fileset
->partitionReferenceNum
);
873 sbi
->s_partition
= fileset
->partitionReferenceNum
;
874 udf_load_fileset(sb
, bh
, root
);
882 * Load primary Volume Descriptor Sequence
884 * Return <0 on error, 0 on success. -EAGAIN is special meaning next sequence
887 static int udf_load_pvoldesc(struct super_block
*sb
, sector_t block
)
889 struct primaryVolDesc
*pvoldesc
;
890 struct ustr
*instr
, *outstr
;
891 struct buffer_head
*bh
;
895 instr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
899 outstr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
903 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
909 if (ident
!= TAG_IDENT_PVD
) {
914 pvoldesc
= (struct primaryVolDesc
*)bh
->b_data
;
916 if (udf_disk_stamp_to_time(&UDF_SB(sb
)->s_record_time
,
917 pvoldesc
->recordingDateAndTime
)) {
919 struct timestamp
*ts
= &pvoldesc
->recordingDateAndTime
;
920 udf_debug("recording time %04u/%02u/%02u %02u:%02u (%x)\n",
921 le16_to_cpu(ts
->year
), ts
->month
, ts
->day
, ts
->hour
,
922 ts
->minute
, le16_to_cpu(ts
->typeAndTimezone
));
926 if (!udf_build_ustr(instr
, pvoldesc
->volIdent
, 32)) {
927 ret
= udf_CS0toUTF8(outstr
, instr
);
931 strncpy(UDF_SB(sb
)->s_volume_ident
, outstr
->u_name
,
932 outstr
->u_len
> 31 ? 31 : outstr
->u_len
);
933 udf_debug("volIdent[] = '%s'\n", UDF_SB(sb
)->s_volume_ident
);
936 if (!udf_build_ustr(instr
, pvoldesc
->volSetIdent
, 128)) {
937 ret
= udf_CS0toUTF8(outstr
, instr
);
941 udf_debug("volSetIdent[] = '%s'\n", outstr
->u_name
);
954 struct inode
*udf_find_metadata_inode_efe(struct super_block
*sb
,
955 u32 meta_file_loc
, u32 partition_num
)
957 struct kernel_lb_addr addr
;
958 struct inode
*metadata_fe
;
960 addr
.logicalBlockNum
= meta_file_loc
;
961 addr
.partitionReferenceNum
= partition_num
;
963 metadata_fe
= udf_iget_special(sb
, &addr
);
965 if (IS_ERR(metadata_fe
)) {
966 udf_warn(sb
, "metadata inode efe not found\n");
969 if (UDF_I(metadata_fe
)->i_alloc_type
!= ICBTAG_FLAG_AD_SHORT
) {
970 udf_warn(sb
, "metadata inode efe does not have short allocation descriptors!\n");
972 return ERR_PTR(-EIO
);
978 static int udf_load_metadata_files(struct super_block
*sb
, int partition
)
980 struct udf_sb_info
*sbi
= UDF_SB(sb
);
981 struct udf_part_map
*map
;
982 struct udf_meta_data
*mdata
;
983 struct kernel_lb_addr addr
;
986 map
= &sbi
->s_partmaps
[partition
];
987 mdata
= &map
->s_type_specific
.s_metadata
;
989 /* metadata address */
990 udf_debug("Metadata file location: block = %d part = %d\n",
991 mdata
->s_meta_file_loc
, map
->s_partition_num
);
993 fe
= udf_find_metadata_inode_efe(sb
, mdata
->s_meta_file_loc
,
994 map
->s_partition_num
);
996 /* mirror file entry */
997 udf_debug("Mirror metadata file location: block = %d part = %d\n",
998 mdata
->s_mirror_file_loc
, map
->s_partition_num
);
1000 fe
= udf_find_metadata_inode_efe(sb
, mdata
->s_mirror_file_loc
,
1001 map
->s_partition_num
);
1004 udf_err(sb
, "Both metadata and mirror metadata inode efe can not found\n");
1007 mdata
->s_mirror_fe
= fe
;
1009 mdata
->s_metadata_fe
= fe
;
1015 * Load only if bitmap file location differs from 0xFFFFFFFF (DCN-5102)
1017 if (mdata
->s_bitmap_file_loc
!= 0xFFFFFFFF) {
1018 addr
.logicalBlockNum
= mdata
->s_bitmap_file_loc
;
1019 addr
.partitionReferenceNum
= map
->s_partition_num
;
1021 udf_debug("Bitmap file location: block = %d part = %d\n",
1022 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
1024 fe
= udf_iget_special(sb
, &addr
);
1026 if (sb
->s_flags
& MS_RDONLY
)
1027 udf_warn(sb
, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n");
1029 udf_err(sb
, "bitmap inode efe not found and attempted read-write mount\n");
1033 mdata
->s_bitmap_fe
= fe
;
1036 udf_debug("udf_load_metadata_files Ok\n");
1040 static void udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
,
1041 struct kernel_lb_addr
*root
)
1043 struct fileSetDesc
*fset
;
1045 fset
= (struct fileSetDesc
*)bh
->b_data
;
1047 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
1049 UDF_SB(sb
)->s_serial_number
= le16_to_cpu(fset
->descTag
.tagSerialNum
);
1051 udf_debug("Rootdir at block=%d, partition=%d\n",
1052 root
->logicalBlockNum
, root
->partitionReferenceNum
);
1055 int udf_compute_nr_groups(struct super_block
*sb
, u32 partition
)
1057 struct udf_part_map
*map
= &UDF_SB(sb
)->s_partmaps
[partition
];
1058 return DIV_ROUND_UP(map
->s_partition_len
+
1059 (sizeof(struct spaceBitmapDesc
) << 3),
1060 sb
->s_blocksize
* 8);
1063 static struct udf_bitmap
*udf_sb_alloc_bitmap(struct super_block
*sb
, u32 index
)
1065 struct udf_bitmap
*bitmap
;
1069 nr_groups
= udf_compute_nr_groups(sb
, index
);
1070 size
= sizeof(struct udf_bitmap
) +
1071 (sizeof(struct buffer_head
*) * nr_groups
);
1073 if (size
<= PAGE_SIZE
)
1074 bitmap
= kzalloc(size
, GFP_KERNEL
);
1076 bitmap
= vzalloc(size
); /* TODO: get rid of vzalloc */
1081 bitmap
->s_nr_groups
= nr_groups
;
1085 static int udf_fill_partdesc_info(struct super_block
*sb
,
1086 struct partitionDesc
*p
, int p_index
)
1088 struct udf_part_map
*map
;
1089 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1090 struct partitionHeaderDesc
*phd
;
1092 map
= &sbi
->s_partmaps
[p_index
];
1094 map
->s_partition_len
= le32_to_cpu(p
->partitionLength
); /* blocks */
1095 map
->s_partition_root
= le32_to_cpu(p
->partitionStartingLocation
);
1097 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY
))
1098 map
->s_partition_flags
|= UDF_PART_FLAG_READ_ONLY
;
1099 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE
))
1100 map
->s_partition_flags
|= UDF_PART_FLAG_WRITE_ONCE
;
1101 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE
))
1102 map
->s_partition_flags
|= UDF_PART_FLAG_REWRITABLE
;
1103 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE
))
1104 map
->s_partition_flags
|= UDF_PART_FLAG_OVERWRITABLE
;
1106 udf_debug("Partition (%d type %x) starts at physical %d, block length %d\n",
1107 p_index
, map
->s_partition_type
,
1108 map
->s_partition_root
, map
->s_partition_len
);
1110 if (strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR02
) &&
1111 strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR03
))
1114 phd
= (struct partitionHeaderDesc
*)p
->partitionContentsUse
;
1115 if (phd
->unallocSpaceTable
.extLength
) {
1116 struct kernel_lb_addr loc
= {
1117 .logicalBlockNum
= le32_to_cpu(
1118 phd
->unallocSpaceTable
.extPosition
),
1119 .partitionReferenceNum
= p_index
,
1121 struct inode
*inode
;
1123 inode
= udf_iget_special(sb
, &loc
);
1124 if (IS_ERR(inode
)) {
1125 udf_debug("cannot load unallocSpaceTable (part %d)\n",
1127 return PTR_ERR(inode
);
1129 map
->s_uspace
.s_table
= inode
;
1130 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_TABLE
;
1131 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1132 p_index
, map
->s_uspace
.s_table
->i_ino
);
1135 if (phd
->unallocSpaceBitmap
.extLength
) {
1136 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1139 map
->s_uspace
.s_bitmap
= bitmap
;
1140 bitmap
->s_extPosition
= le32_to_cpu(
1141 phd
->unallocSpaceBitmap
.extPosition
);
1142 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_BITMAP
;
1143 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
1144 p_index
, bitmap
->s_extPosition
);
1147 if (phd
->partitionIntegrityTable
.extLength
)
1148 udf_debug("partitionIntegrityTable (part %d)\n", p_index
);
1150 if (phd
->freedSpaceTable
.extLength
) {
1151 struct kernel_lb_addr loc
= {
1152 .logicalBlockNum
= le32_to_cpu(
1153 phd
->freedSpaceTable
.extPosition
),
1154 .partitionReferenceNum
= p_index
,
1156 struct inode
*inode
;
1158 inode
= udf_iget_special(sb
, &loc
);
1159 if (IS_ERR(inode
)) {
1160 udf_debug("cannot load freedSpaceTable (part %d)\n",
1162 return PTR_ERR(inode
);
1164 map
->s_fspace
.s_table
= inode
;
1165 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_TABLE
;
1166 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1167 p_index
, map
->s_fspace
.s_table
->i_ino
);
1170 if (phd
->freedSpaceBitmap
.extLength
) {
1171 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1174 map
->s_fspace
.s_bitmap
= bitmap
;
1175 bitmap
->s_extPosition
= le32_to_cpu(
1176 phd
->freedSpaceBitmap
.extPosition
);
1177 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_BITMAP
;
1178 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1179 p_index
, bitmap
->s_extPosition
);
1184 static void udf_find_vat_block(struct super_block
*sb
, int p_index
,
1185 int type1_index
, sector_t start_block
)
1187 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1188 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1190 struct kernel_lb_addr ino
;
1191 struct inode
*inode
;
1194 * VAT file entry is in the last recorded block. Some broken disks have
1195 * it a few blocks before so try a bit harder...
1197 ino
.partitionReferenceNum
= type1_index
;
1198 for (vat_block
= start_block
;
1199 vat_block
>= map
->s_partition_root
&&
1200 vat_block
>= start_block
- 3; vat_block
--) {
1201 ino
.logicalBlockNum
= vat_block
- map
->s_partition_root
;
1202 inode
= udf_iget_special(sb
, &ino
);
1203 if (!IS_ERR(inode
)) {
1204 sbi
->s_vat_inode
= inode
;
1210 static int udf_load_vat(struct super_block
*sb
, int p_index
, int type1_index
)
1212 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1213 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1214 struct buffer_head
*bh
= NULL
;
1215 struct udf_inode_info
*vati
;
1217 struct virtualAllocationTable20
*vat20
;
1218 sector_t blocks
= sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
;
1220 udf_find_vat_block(sb
, p_index
, type1_index
, sbi
->s_last_block
);
1221 if (!sbi
->s_vat_inode
&&
1222 sbi
->s_last_block
!= blocks
- 1) {
1223 pr_notice("Failed to read VAT inode from the last recorded block (%lu), retrying with the last block of the device (%lu).\n",
1224 (unsigned long)sbi
->s_last_block
,
1225 (unsigned long)blocks
- 1);
1226 udf_find_vat_block(sb
, p_index
, type1_index
, blocks
- 1);
1228 if (!sbi
->s_vat_inode
)
1231 if (map
->s_partition_type
== UDF_VIRTUAL_MAP15
) {
1232 map
->s_type_specific
.s_virtual
.s_start_offset
= 0;
1233 map
->s_type_specific
.s_virtual
.s_num_entries
=
1234 (sbi
->s_vat_inode
->i_size
- 36) >> 2;
1235 } else if (map
->s_partition_type
== UDF_VIRTUAL_MAP20
) {
1236 vati
= UDF_I(sbi
->s_vat_inode
);
1237 if (vati
->i_alloc_type
!= ICBTAG_FLAG_AD_IN_ICB
) {
1238 pos
= udf_block_map(sbi
->s_vat_inode
, 0);
1239 bh
= sb_bread(sb
, pos
);
1242 vat20
= (struct virtualAllocationTable20
*)bh
->b_data
;
1244 vat20
= (struct virtualAllocationTable20
*)
1248 map
->s_type_specific
.s_virtual
.s_start_offset
=
1249 le16_to_cpu(vat20
->lengthHeader
);
1250 map
->s_type_specific
.s_virtual
.s_num_entries
=
1251 (sbi
->s_vat_inode
->i_size
-
1252 map
->s_type_specific
.s_virtual
.
1253 s_start_offset
) >> 2;
1260 * Load partition descriptor block
1262 * Returns <0 on error, 0 on success, -EAGAIN is special - try next descriptor
1265 static int udf_load_partdesc(struct super_block
*sb
, sector_t block
)
1267 struct buffer_head
*bh
;
1268 struct partitionDesc
*p
;
1269 struct udf_part_map
*map
;
1270 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1272 uint16_t partitionNumber
;
1276 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1279 if (ident
!= TAG_IDENT_PD
) {
1284 p
= (struct partitionDesc
*)bh
->b_data
;
1285 partitionNumber
= le16_to_cpu(p
->partitionNumber
);
1287 /* First scan for TYPE1, SPARABLE and METADATA partitions */
1288 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1289 map
= &sbi
->s_partmaps
[i
];
1290 udf_debug("Searching map: (%d == %d)\n",
1291 map
->s_partition_num
, partitionNumber
);
1292 if (map
->s_partition_num
== partitionNumber
&&
1293 (map
->s_partition_type
== UDF_TYPE1_MAP15
||
1294 map
->s_partition_type
== UDF_SPARABLE_MAP15
))
1298 if (i
>= sbi
->s_partitions
) {
1299 udf_debug("Partition (%d) not found in partition map\n",
1305 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1310 * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and
1311 * PHYSICAL partitions are already set up
1315 map
= NULL
; /* supress 'maybe used uninitialized' warning */
1317 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1318 map
= &sbi
->s_partmaps
[i
];
1320 if (map
->s_partition_num
== partitionNumber
&&
1321 (map
->s_partition_type
== UDF_VIRTUAL_MAP15
||
1322 map
->s_partition_type
== UDF_VIRTUAL_MAP20
||
1323 map
->s_partition_type
== UDF_METADATA_MAP25
))
1327 if (i
>= sbi
->s_partitions
) {
1332 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1336 if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
1337 ret
= udf_load_metadata_files(sb
, i
);
1339 udf_err(sb
, "error loading MetaData partition map %d\n",
1345 * If we have a partition with virtual map, we don't handle
1346 * writing to it (we overwrite blocks instead of relocating
1349 if (!(sb
->s_flags
& MS_RDONLY
)) {
1353 ret
= udf_load_vat(sb
, i
, type1_idx
);
1359 /* In case loading failed, we handle cleanup in udf_fill_super */
1364 static int udf_load_sparable_map(struct super_block
*sb
,
1365 struct udf_part_map
*map
,
1366 struct sparablePartitionMap
*spm
)
1370 struct sparingTable
*st
;
1371 struct udf_sparing_data
*sdata
= &map
->s_type_specific
.s_sparing
;
1373 struct buffer_head
*bh
;
1375 map
->s_partition_type
= UDF_SPARABLE_MAP15
;
1376 sdata
->s_packet_len
= le16_to_cpu(spm
->packetLength
);
1377 if (!is_power_of_2(sdata
->s_packet_len
)) {
1378 udf_err(sb
, "error loading logical volume descriptor: "
1379 "Invalid packet length %u\n",
1380 (unsigned)sdata
->s_packet_len
);
1383 if (spm
->numSparingTables
> 4) {
1384 udf_err(sb
, "error loading logical volume descriptor: "
1385 "Too many sparing tables (%d)\n",
1386 (int)spm
->numSparingTables
);
1390 for (i
= 0; i
< spm
->numSparingTables
; i
++) {
1391 loc
= le32_to_cpu(spm
->locSparingTable
[i
]);
1392 bh
= udf_read_tagged(sb
, loc
, loc
, &ident
);
1396 st
= (struct sparingTable
*)bh
->b_data
;
1398 strncmp(st
->sparingIdent
.ident
, UDF_ID_SPARING
,
1399 strlen(UDF_ID_SPARING
)) ||
1400 sizeof(*st
) + le16_to_cpu(st
->reallocationTableLen
) >
1406 sdata
->s_spar_map
[i
] = bh
;
1408 map
->s_partition_func
= udf_get_pblock_spar15
;
1412 static int udf_load_logicalvol(struct super_block
*sb
, sector_t block
,
1413 struct kernel_lb_addr
*fileset
)
1415 struct logicalVolDesc
*lvd
;
1418 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1419 struct genericPartitionMap
*gpm
;
1421 struct buffer_head
*bh
;
1422 unsigned int table_len
;
1425 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1428 BUG_ON(ident
!= TAG_IDENT_LVD
);
1429 lvd
= (struct logicalVolDesc
*)bh
->b_data
;
1430 table_len
= le32_to_cpu(lvd
->mapTableLength
);
1431 if (table_len
> sb
->s_blocksize
- sizeof(*lvd
)) {
1432 udf_err(sb
, "error loading logical volume descriptor: "
1433 "Partition table too long (%u > %lu)\n", table_len
,
1434 sb
->s_blocksize
- sizeof(*lvd
));
1439 ret
= udf_sb_alloc_partition_maps(sb
, le32_to_cpu(lvd
->numPartitionMaps
));
1443 for (i
= 0, offset
= 0;
1444 i
< sbi
->s_partitions
&& offset
< table_len
;
1445 i
++, offset
+= gpm
->partitionMapLength
) {
1446 struct udf_part_map
*map
= &sbi
->s_partmaps
[i
];
1447 gpm
= (struct genericPartitionMap
*)
1448 &(lvd
->partitionMaps
[offset
]);
1449 type
= gpm
->partitionMapType
;
1451 struct genericPartitionMap1
*gpm1
=
1452 (struct genericPartitionMap1
*)gpm
;
1453 map
->s_partition_type
= UDF_TYPE1_MAP15
;
1454 map
->s_volumeseqnum
= le16_to_cpu(gpm1
->volSeqNum
);
1455 map
->s_partition_num
= le16_to_cpu(gpm1
->partitionNum
);
1456 map
->s_partition_func
= NULL
;
1457 } else if (type
== 2) {
1458 struct udfPartitionMap2
*upm2
=
1459 (struct udfPartitionMap2
*)gpm
;
1460 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
,
1461 strlen(UDF_ID_VIRTUAL
))) {
1463 le16_to_cpu(((__le16
*)upm2
->partIdent
.
1466 map
->s_partition_type
=
1468 map
->s_partition_func
=
1469 udf_get_pblock_virt15
;
1471 map
->s_partition_type
=
1473 map
->s_partition_func
=
1474 udf_get_pblock_virt20
;
1476 } else if (!strncmp(upm2
->partIdent
.ident
,
1478 strlen(UDF_ID_SPARABLE
))) {
1479 ret
= udf_load_sparable_map(sb
, map
,
1480 (struct sparablePartitionMap
*)gpm
);
1483 } else if (!strncmp(upm2
->partIdent
.ident
,
1485 strlen(UDF_ID_METADATA
))) {
1486 struct udf_meta_data
*mdata
=
1487 &map
->s_type_specific
.s_metadata
;
1488 struct metadataPartitionMap
*mdm
=
1489 (struct metadataPartitionMap
*)
1490 &(lvd
->partitionMaps
[offset
]);
1491 udf_debug("Parsing Logical vol part %d type %d id=%s\n",
1492 i
, type
, UDF_ID_METADATA
);
1494 map
->s_partition_type
= UDF_METADATA_MAP25
;
1495 map
->s_partition_func
= udf_get_pblock_meta25
;
1497 mdata
->s_meta_file_loc
=
1498 le32_to_cpu(mdm
->metadataFileLoc
);
1499 mdata
->s_mirror_file_loc
=
1500 le32_to_cpu(mdm
->metadataMirrorFileLoc
);
1501 mdata
->s_bitmap_file_loc
=
1502 le32_to_cpu(mdm
->metadataBitmapFileLoc
);
1503 mdata
->s_alloc_unit_size
=
1504 le32_to_cpu(mdm
->allocUnitSize
);
1505 mdata
->s_align_unit_size
=
1506 le16_to_cpu(mdm
->alignUnitSize
);
1507 if (mdm
->flags
& 0x01)
1508 mdata
->s_flags
|= MF_DUPLICATE_MD
;
1510 udf_debug("Metadata Ident suffix=0x%x\n",
1511 le16_to_cpu(*(__le16
*)
1512 mdm
->partIdent
.identSuffix
));
1513 udf_debug("Metadata part num=%d\n",
1514 le16_to_cpu(mdm
->partitionNum
));
1515 udf_debug("Metadata part alloc unit size=%d\n",
1516 le32_to_cpu(mdm
->allocUnitSize
));
1517 udf_debug("Metadata file loc=%d\n",
1518 le32_to_cpu(mdm
->metadataFileLoc
));
1519 udf_debug("Mirror file loc=%d\n",
1520 le32_to_cpu(mdm
->metadataMirrorFileLoc
));
1521 udf_debug("Bitmap file loc=%d\n",
1522 le32_to_cpu(mdm
->metadataBitmapFileLoc
));
1523 udf_debug("Flags: %d %d\n",
1524 mdata
->s_flags
, mdm
->flags
);
1526 udf_debug("Unknown ident: %s\n",
1527 upm2
->partIdent
.ident
);
1530 map
->s_volumeseqnum
= le16_to_cpu(upm2
->volSeqNum
);
1531 map
->s_partition_num
= le16_to_cpu(upm2
->partitionNum
);
1533 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1534 i
, map
->s_partition_num
, type
, map
->s_volumeseqnum
);
1538 struct long_ad
*la
= (struct long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
1540 *fileset
= lelb_to_cpu(la
->extLocation
);
1541 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1542 fileset
->logicalBlockNum
,
1543 fileset
->partitionReferenceNum
);
1545 if (lvd
->integritySeqExt
.extLength
)
1546 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
1554 * udf_load_logicalvolint
1557 static void udf_load_logicalvolint(struct super_block
*sb
, struct kernel_extent_ad loc
)
1559 struct buffer_head
*bh
= NULL
;
1561 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1562 struct logicalVolIntegrityDesc
*lvid
;
1564 while (loc
.extLength
> 0 &&
1565 (bh
= udf_read_tagged(sb
, loc
.extLocation
,
1566 loc
.extLocation
, &ident
)) &&
1567 ident
== TAG_IDENT_LVID
) {
1568 sbi
->s_lvid_bh
= bh
;
1569 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1571 if (lvid
->nextIntegrityExt
.extLength
)
1572 udf_load_logicalvolint(sb
,
1573 leea_to_cpu(lvid
->nextIntegrityExt
));
1575 if (sbi
->s_lvid_bh
!= bh
)
1577 loc
.extLength
-= sb
->s_blocksize
;
1580 if (sbi
->s_lvid_bh
!= bh
)
1585 * Maximum number of Terminating Descriptor redirections. The chosen number is
1586 * arbitrary - just that we hopefully don't limit any real use of rewritten
1587 * inode on write-once media but avoid looping for too long on corrupted media.
1589 #define UDF_MAX_TD_NESTING 64
1592 * Process a main/reserve volume descriptor sequence.
1593 * @block First block of first extent of the sequence.
1594 * @lastblock Lastblock of first extent of the sequence.
1595 * @fileset There we store extent containing root fileset
1597 * Returns <0 on error, 0 on success. -EAGAIN is special - try next descriptor
1600 static noinline
int udf_process_sequence(
1601 struct super_block
*sb
,
1602 sector_t block
, sector_t lastblock
,
1603 struct kernel_lb_addr
*fileset
)
1605 struct buffer_head
*bh
= NULL
;
1606 struct udf_vds_record vds
[VDS_POS_LENGTH
];
1607 struct udf_vds_record
*curr
;
1608 struct generic_desc
*gd
;
1609 struct volDescPtr
*vdp
;
1613 long next_s
= 0, next_e
= 0;
1615 unsigned int indirections
= 0;
1617 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
1620 * Read the main descriptor sequence and find which descriptors
1623 for (; (!done
&& block
<= lastblock
); block
++) {
1625 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1628 "Block %llu of volume descriptor sequence is corrupted or we could not read it\n",
1629 (unsigned long long)block
);
1633 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1634 gd
= (struct generic_desc
*)bh
->b_data
;
1635 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
1637 case TAG_IDENT_PVD
: /* ISO 13346 3/10.1 */
1638 curr
= &vds
[VDS_POS_PRIMARY_VOL_DESC
];
1639 if (vdsn
>= curr
->volDescSeqNum
) {
1640 curr
->volDescSeqNum
= vdsn
;
1641 curr
->block
= block
;
1644 case TAG_IDENT_VDP
: /* ISO 13346 3/10.3 */
1645 curr
= &vds
[VDS_POS_VOL_DESC_PTR
];
1646 if (vdsn
>= curr
->volDescSeqNum
) {
1647 curr
->volDescSeqNum
= vdsn
;
1648 curr
->block
= block
;
1650 vdp
= (struct volDescPtr
*)bh
->b_data
;
1651 next_s
= le32_to_cpu(
1652 vdp
->nextVolDescSeqExt
.extLocation
);
1653 next_e
= le32_to_cpu(
1654 vdp
->nextVolDescSeqExt
.extLength
);
1655 next_e
= next_e
>> sb
->s_blocksize_bits
;
1659 case TAG_IDENT_IUVD
: /* ISO 13346 3/10.4 */
1660 curr
= &vds
[VDS_POS_IMP_USE_VOL_DESC
];
1661 if (vdsn
>= curr
->volDescSeqNum
) {
1662 curr
->volDescSeqNum
= vdsn
;
1663 curr
->block
= block
;
1666 case TAG_IDENT_PD
: /* ISO 13346 3/10.5 */
1667 curr
= &vds
[VDS_POS_PARTITION_DESC
];
1669 curr
->block
= block
;
1671 case TAG_IDENT_LVD
: /* ISO 13346 3/10.6 */
1672 curr
= &vds
[VDS_POS_LOGICAL_VOL_DESC
];
1673 if (vdsn
>= curr
->volDescSeqNum
) {
1674 curr
->volDescSeqNum
= vdsn
;
1675 curr
->block
= block
;
1678 case TAG_IDENT_USD
: /* ISO 13346 3/10.8 */
1679 curr
= &vds
[VDS_POS_UNALLOC_SPACE_DESC
];
1680 if (vdsn
>= curr
->volDescSeqNum
) {
1681 curr
->volDescSeqNum
= vdsn
;
1682 curr
->block
= block
;
1685 case TAG_IDENT_TD
: /* ISO 13346 3/10.9 */
1686 if (++indirections
> UDF_MAX_TD_NESTING
) {
1687 udf_err(sb
, "too many TDs (max %u supported)\n", UDF_MAX_TD_NESTING
);
1692 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1696 next_s
= next_e
= 0;
1704 * Now read interesting descriptors again and process them
1705 * in a suitable order
1707 if (!vds
[VDS_POS_PRIMARY_VOL_DESC
].block
) {
1708 udf_err(sb
, "Primary Volume Descriptor not found!\n");
1711 ret
= udf_load_pvoldesc(sb
, vds
[VDS_POS_PRIMARY_VOL_DESC
].block
);
1715 if (vds
[VDS_POS_LOGICAL_VOL_DESC
].block
) {
1716 ret
= udf_load_logicalvol(sb
,
1717 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
,
1723 if (vds
[VDS_POS_PARTITION_DESC
].block
) {
1725 * We rescan the whole descriptor sequence to find
1726 * partition descriptor blocks and process them.
1728 for (block
= vds
[VDS_POS_PARTITION_DESC
].block
;
1729 block
< vds
[VDS_POS_TERMINATING_DESC
].block
;
1731 ret
= udf_load_partdesc(sb
, block
);
1741 * Load Volume Descriptor Sequence described by anchor in bh
1743 * Returns <0 on error, 0 on success
1745 static int udf_load_sequence(struct super_block
*sb
, struct buffer_head
*bh
,
1746 struct kernel_lb_addr
*fileset
)
1748 struct anchorVolDescPtr
*anchor
;
1749 sector_t main_s
, main_e
, reserve_s
, reserve_e
;
1752 anchor
= (struct anchorVolDescPtr
*)bh
->b_data
;
1754 /* Locate the main sequence */
1755 main_s
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLocation
);
1756 main_e
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLength
);
1757 main_e
= main_e
>> sb
->s_blocksize_bits
;
1760 /* Locate the reserve sequence */
1761 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1762 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1763 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1764 reserve_e
+= reserve_s
;
1766 /* Process the main & reserve sequences */
1767 /* responsible for finding the PartitionDesc(s) */
1768 ret
= udf_process_sequence(sb
, main_s
, main_e
, fileset
);
1771 udf_sb_free_partitions(sb
);
1772 ret
= udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
);
1774 udf_sb_free_partitions(sb
);
1775 /* No sequence was OK, return -EIO */
1783 * Check whether there is an anchor block in the given block and
1784 * load Volume Descriptor Sequence if so.
1786 * Returns <0 on error, 0 on success, -EAGAIN is special - try next anchor
1789 static int udf_check_anchor_block(struct super_block
*sb
, sector_t block
,
1790 struct kernel_lb_addr
*fileset
)
1792 struct buffer_head
*bh
;
1796 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_VARCONV
) &&
1797 udf_fixed_to_variable(block
) >=
1798 sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
)
1801 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1804 if (ident
!= TAG_IDENT_AVDP
) {
1808 ret
= udf_load_sequence(sb
, bh
, fileset
);
1814 * Search for an anchor volume descriptor pointer.
1816 * Returns < 0 on error, 0 on success. -EAGAIN is special - try next set
1819 static int udf_scan_anchors(struct super_block
*sb
, sector_t
*lastblock
,
1820 struct kernel_lb_addr
*fileset
)
1824 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1828 /* First try user provided anchor */
1829 if (sbi
->s_anchor
) {
1830 ret
= udf_check_anchor_block(sb
, sbi
->s_anchor
, fileset
);
1835 * according to spec, anchor is in either:
1839 * however, if the disc isn't closed, it could be 512.
1841 ret
= udf_check_anchor_block(sb
, sbi
->s_session
+ 256, fileset
);
1845 * The trouble is which block is the last one. Drives often misreport
1846 * this so we try various possibilities.
1848 last
[last_count
++] = *lastblock
;
1849 if (*lastblock
>= 1)
1850 last
[last_count
++] = *lastblock
- 1;
1851 last
[last_count
++] = *lastblock
+ 1;
1852 if (*lastblock
>= 2)
1853 last
[last_count
++] = *lastblock
- 2;
1854 if (*lastblock
>= 150)
1855 last
[last_count
++] = *lastblock
- 150;
1856 if (*lastblock
>= 152)
1857 last
[last_count
++] = *lastblock
- 152;
1859 for (i
= 0; i
< last_count
; i
++) {
1860 if (last
[i
] >= sb
->s_bdev
->bd_inode
->i_size
>>
1861 sb
->s_blocksize_bits
)
1863 ret
= udf_check_anchor_block(sb
, last
[i
], fileset
);
1864 if (ret
!= -EAGAIN
) {
1866 *lastblock
= last
[i
];
1871 ret
= udf_check_anchor_block(sb
, last
[i
] - 256, fileset
);
1872 if (ret
!= -EAGAIN
) {
1874 *lastblock
= last
[i
];
1879 /* Finally try block 512 in case media is open */
1880 return udf_check_anchor_block(sb
, sbi
->s_session
+ 512, fileset
);
1884 * Find an anchor volume descriptor and load Volume Descriptor Sequence from
1885 * area specified by it. The function expects sbi->s_lastblock to be the last
1886 * block on the media.
1888 * Return <0 on error, 0 if anchor found. -EAGAIN is special meaning anchor
1891 static int udf_find_anchor(struct super_block
*sb
,
1892 struct kernel_lb_addr
*fileset
)
1894 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1895 sector_t lastblock
= sbi
->s_last_block
;
1898 ret
= udf_scan_anchors(sb
, &lastblock
, fileset
);
1902 /* No anchor found? Try VARCONV conversion of block numbers */
1903 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
1904 lastblock
= udf_variable_to_fixed(sbi
->s_last_block
);
1905 /* Firstly, we try to not convert number of the last block */
1906 ret
= udf_scan_anchors(sb
, &lastblock
, fileset
);
1910 lastblock
= sbi
->s_last_block
;
1911 /* Secondly, we try with converted number of the last block */
1912 ret
= udf_scan_anchors(sb
, &lastblock
, fileset
);
1914 /* VARCONV didn't help. Clear it. */
1915 UDF_CLEAR_FLAG(sb
, UDF_FLAG_VARCONV
);
1919 sbi
->s_last_block
= lastblock
;
1924 * Check Volume Structure Descriptor, find Anchor block and load Volume
1925 * Descriptor Sequence.
1927 * Returns < 0 on error, 0 on success. -EAGAIN is special meaning anchor
1928 * block was not found.
1930 static int udf_load_vrs(struct super_block
*sb
, struct udf_options
*uopt
,
1931 int silent
, struct kernel_lb_addr
*fileset
)
1933 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1937 if (!sb_set_blocksize(sb
, uopt
->blocksize
)) {
1939 udf_warn(sb
, "Bad block size\n");
1942 sbi
->s_last_block
= uopt
->lastblock
;
1944 /* Check that it is NSR02 compliant */
1945 nsr_off
= udf_check_vsd(sb
);
1948 udf_warn(sb
, "No VRS found\n");
1952 udf_debug("Failed to read sector at offset %d. "
1953 "Assuming open disc. Skipping validity "
1954 "check\n", VSD_FIRST_SECTOR_OFFSET
);
1955 if (!sbi
->s_last_block
)
1956 sbi
->s_last_block
= udf_get_last_block(sb
);
1958 udf_debug("Validity check skipped because of novrs option\n");
1961 /* Look for anchor block and load Volume Descriptor Sequence */
1962 sbi
->s_anchor
= uopt
->anchor
;
1963 ret
= udf_find_anchor(sb
, fileset
);
1965 if (!silent
&& ret
== -EAGAIN
)
1966 udf_warn(sb
, "No anchor found\n");
1972 static void udf_open_lvid(struct super_block
*sb
)
1974 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1975 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1976 struct logicalVolIntegrityDesc
*lvid
;
1977 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1981 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1982 lvidiu
= udf_sb_lvidiu(sb
);
1986 mutex_lock(&sbi
->s_alloc_mutex
);
1987 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1988 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1989 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
,
1991 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN
);
1993 lvid
->descTag
.descCRC
= cpu_to_le16(
1994 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1995 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1997 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1998 mark_buffer_dirty(bh
);
1999 sbi
->s_lvid_dirty
= 0;
2000 mutex_unlock(&sbi
->s_alloc_mutex
);
2001 /* Make opening of filesystem visible on the media immediately */
2002 sync_dirty_buffer(bh
);
2005 static void udf_close_lvid(struct super_block
*sb
)
2007 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2008 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
2009 struct logicalVolIntegrityDesc
*lvid
;
2010 struct logicalVolIntegrityDescImpUse
*lvidiu
;
2014 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
2015 lvidiu
= udf_sb_lvidiu(sb
);
2019 mutex_lock(&sbi
->s_alloc_mutex
);
2020 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
2021 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
2022 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
, CURRENT_TIME
);
2023 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(lvidiu
->maxUDFWriteRev
))
2024 lvidiu
->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
2025 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFReadRev
))
2026 lvidiu
->minUDFReadRev
= cpu_to_le16(sbi
->s_udfrev
);
2027 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFWriteRev
))
2028 lvidiu
->minUDFWriteRev
= cpu_to_le16(sbi
->s_udfrev
);
2029 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE
);
2031 lvid
->descTag
.descCRC
= cpu_to_le16(
2032 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
2033 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
2035 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
2037 * We set buffer uptodate unconditionally here to avoid spurious
2038 * warnings from mark_buffer_dirty() when previous EIO has marked
2039 * the buffer as !uptodate
2041 set_buffer_uptodate(bh
);
2042 mark_buffer_dirty(bh
);
2043 sbi
->s_lvid_dirty
= 0;
2044 mutex_unlock(&sbi
->s_alloc_mutex
);
2045 /* Make closing of filesystem visible on the media immediately */
2046 sync_dirty_buffer(bh
);
2049 u64
lvid_get_unique_id(struct super_block
*sb
)
2051 struct buffer_head
*bh
;
2052 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2053 struct logicalVolIntegrityDesc
*lvid
;
2054 struct logicalVolHeaderDesc
*lvhd
;
2058 bh
= sbi
->s_lvid_bh
;
2062 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
2063 lvhd
= (struct logicalVolHeaderDesc
*)lvid
->logicalVolContentsUse
;
2065 mutex_lock(&sbi
->s_alloc_mutex
);
2066 ret
= uniqueID
= le64_to_cpu(lvhd
->uniqueID
);
2067 if (!(++uniqueID
& 0xFFFFFFFF))
2069 lvhd
->uniqueID
= cpu_to_le64(uniqueID
);
2070 mutex_unlock(&sbi
->s_alloc_mutex
);
2071 mark_buffer_dirty(bh
);
2076 static int udf_fill_super(struct super_block
*sb
, void *options
, int silent
)
2079 struct inode
*inode
= NULL
;
2080 struct udf_options uopt
;
2081 struct kernel_lb_addr rootdir
, fileset
;
2082 struct udf_sb_info
*sbi
;
2083 bool lvid_open
= false;
2085 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
) | (1 << UDF_FLAG_STRICT
);
2086 uopt
.uid
= INVALID_UID
;
2087 uopt
.gid
= INVALID_GID
;
2089 uopt
.fmode
= UDF_INVALID_MODE
;
2090 uopt
.dmode
= UDF_INVALID_MODE
;
2092 sbi
= kzalloc(sizeof(struct udf_sb_info
), GFP_KERNEL
);
2096 sb
->s_fs_info
= sbi
;
2098 mutex_init(&sbi
->s_alloc_mutex
);
2100 if (!udf_parse_options((char *)options
, &uopt
, false))
2101 goto parse_options_failure
;
2103 if (uopt
.flags
& (1 << UDF_FLAG_UTF8
) &&
2104 uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) {
2105 udf_err(sb
, "utf8 cannot be combined with iocharset\n");
2106 goto parse_options_failure
;
2108 #ifdef CONFIG_UDF_NLS
2109 if ((uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) && !uopt
.nls_map
) {
2110 uopt
.nls_map
= load_nls_default();
2112 uopt
.flags
&= ~(1 << UDF_FLAG_NLS_MAP
);
2114 udf_debug("Using default NLS map\n");
2117 if (!(uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)))
2118 uopt
.flags
|= (1 << UDF_FLAG_UTF8
);
2120 fileset
.logicalBlockNum
= 0xFFFFFFFF;
2121 fileset
.partitionReferenceNum
= 0xFFFF;
2123 sbi
->s_flags
= uopt
.flags
;
2124 sbi
->s_uid
= uopt
.uid
;
2125 sbi
->s_gid
= uopt
.gid
;
2126 sbi
->s_umask
= uopt
.umask
;
2127 sbi
->s_fmode
= uopt
.fmode
;
2128 sbi
->s_dmode
= uopt
.dmode
;
2129 sbi
->s_nls_map
= uopt
.nls_map
;
2130 rwlock_init(&sbi
->s_cred_lock
);
2132 if (uopt
.session
== 0xFFFFFFFF)
2133 sbi
->s_session
= udf_get_last_session(sb
);
2135 sbi
->s_session
= uopt
.session
;
2137 udf_debug("Multi-session=%d\n", sbi
->s_session
);
2139 /* Fill in the rest of the superblock */
2140 sb
->s_op
= &udf_sb_ops
;
2141 sb
->s_export_op
= &udf_export_ops
;
2143 sb
->s_magic
= UDF_SUPER_MAGIC
;
2144 sb
->s_time_gran
= 1000;
2146 if (uopt
.flags
& (1 << UDF_FLAG_BLOCKSIZE_SET
)) {
2147 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
2149 uopt
.blocksize
= bdev_logical_block_size(sb
->s_bdev
);
2150 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
2151 if (ret
== -EAGAIN
&& uopt
.blocksize
!= UDF_DEFAULT_BLOCKSIZE
) {
2153 pr_notice("Rescanning with blocksize %d\n",
2154 UDF_DEFAULT_BLOCKSIZE
);
2155 brelse(sbi
->s_lvid_bh
);
2156 sbi
->s_lvid_bh
= NULL
;
2157 uopt
.blocksize
= UDF_DEFAULT_BLOCKSIZE
;
2158 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
2162 if (ret
== -EAGAIN
) {
2163 udf_warn(sb
, "No partition found (1)\n");
2169 udf_debug("Lastblock=%d\n", sbi
->s_last_block
);
2171 if (sbi
->s_lvid_bh
) {
2172 struct logicalVolIntegrityDescImpUse
*lvidiu
=
2174 uint16_t minUDFReadRev
;
2175 uint16_t minUDFWriteRev
;
2181 minUDFReadRev
= le16_to_cpu(lvidiu
->minUDFReadRev
);
2182 minUDFWriteRev
= le16_to_cpu(lvidiu
->minUDFWriteRev
);
2183 if (minUDFReadRev
> UDF_MAX_READ_VERSION
) {
2184 udf_err(sb
, "minUDFReadRev=%x (max is %x)\n",
2186 UDF_MAX_READ_VERSION
);
2189 } else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
&&
2190 !(sb
->s_flags
& MS_RDONLY
)) {
2195 sbi
->s_udfrev
= minUDFWriteRev
;
2197 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
2198 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
2199 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
2200 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
2203 if (!sbi
->s_partitions
) {
2204 udf_warn(sb
, "No partition found (2)\n");
2209 if (sbi
->s_partmaps
[sbi
->s_partition
].s_partition_flags
&
2210 UDF_PART_FLAG_READ_ONLY
&&
2211 !(sb
->s_flags
& MS_RDONLY
)) {
2216 if (udf_find_fileset(sb
, &fileset
, &rootdir
)) {
2217 udf_warn(sb
, "No fileset found\n");
2223 struct timestamp ts
;
2224 udf_time_to_disk_stamp(&ts
, sbi
->s_record_time
);
2225 udf_info("Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
2226 sbi
->s_volume_ident
,
2227 le16_to_cpu(ts
.year
), ts
.month
, ts
.day
,
2228 ts
.hour
, ts
.minute
, le16_to_cpu(ts
.typeAndTimezone
));
2230 if (!(sb
->s_flags
& MS_RDONLY
)) {
2235 /* Assign the root inode */
2236 /* assign inodes by physical block number */
2237 /* perhaps it's not extensible enough, but for now ... */
2238 inode
= udf_iget(sb
, &rootdir
);
2239 if (IS_ERR(inode
)) {
2240 udf_err(sb
, "Error in udf_iget, block=%d, partition=%d\n",
2241 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
2242 ret
= PTR_ERR(inode
);
2246 /* Allocate a dentry for the root inode */
2247 sb
->s_root
= d_make_root(inode
);
2249 udf_err(sb
, "Couldn't allocate root dentry\n");
2253 sb
->s_maxbytes
= MAX_LFS_FILESIZE
;
2254 sb
->s_max_links
= UDF_MAX_LINKS
;
2258 iput(sbi
->s_vat_inode
);
2259 parse_options_failure
:
2260 #ifdef CONFIG_UDF_NLS
2261 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2262 unload_nls(sbi
->s_nls_map
);
2266 brelse(sbi
->s_lvid_bh
);
2267 udf_sb_free_partitions(sb
);
2269 sb
->s_fs_info
= NULL
;
2274 void _udf_err(struct super_block
*sb
, const char *function
,
2275 const char *fmt
, ...)
2277 struct va_format vaf
;
2280 va_start(args
, fmt
);
2285 pr_err("error (device %s): %s: %pV", sb
->s_id
, function
, &vaf
);
2290 void _udf_warn(struct super_block
*sb
, const char *function
,
2291 const char *fmt
, ...)
2293 struct va_format vaf
;
2296 va_start(args
, fmt
);
2301 pr_warn("warning (device %s): %s: %pV", sb
->s_id
, function
, &vaf
);
2306 static void udf_put_super(struct super_block
*sb
)
2308 struct udf_sb_info
*sbi
;
2312 iput(sbi
->s_vat_inode
);
2313 #ifdef CONFIG_UDF_NLS
2314 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2315 unload_nls(sbi
->s_nls_map
);
2317 if (!(sb
->s_flags
& MS_RDONLY
))
2319 brelse(sbi
->s_lvid_bh
);
2320 udf_sb_free_partitions(sb
);
2321 mutex_destroy(&sbi
->s_alloc_mutex
);
2322 kfree(sb
->s_fs_info
);
2323 sb
->s_fs_info
= NULL
;
2326 static int udf_sync_fs(struct super_block
*sb
, int wait
)
2328 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2330 mutex_lock(&sbi
->s_alloc_mutex
);
2331 if (sbi
->s_lvid_dirty
) {
2333 * Blockdevice will be synced later so we don't have to submit
2336 mark_buffer_dirty(sbi
->s_lvid_bh
);
2337 sbi
->s_lvid_dirty
= 0;
2339 mutex_unlock(&sbi
->s_alloc_mutex
);
2344 static int udf_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
2346 struct super_block
*sb
= dentry
->d_sb
;
2347 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2348 struct logicalVolIntegrityDescImpUse
*lvidiu
;
2349 u64 id
= huge_encode_dev(sb
->s_bdev
->bd_dev
);
2351 lvidiu
= udf_sb_lvidiu(sb
);
2352 buf
->f_type
= UDF_SUPER_MAGIC
;
2353 buf
->f_bsize
= sb
->s_blocksize
;
2354 buf
->f_blocks
= sbi
->s_partmaps
[sbi
->s_partition
].s_partition_len
;
2355 buf
->f_bfree
= udf_count_free(sb
);
2356 buf
->f_bavail
= buf
->f_bfree
;
2357 buf
->f_files
= (lvidiu
!= NULL
? (le32_to_cpu(lvidiu
->numFiles
) +
2358 le32_to_cpu(lvidiu
->numDirs
)) : 0)
2360 buf
->f_ffree
= buf
->f_bfree
;
2361 buf
->f_namelen
= UDF_NAME_LEN
- 2;
2362 buf
->f_fsid
.val
[0] = (u32
)id
;
2363 buf
->f_fsid
.val
[1] = (u32
)(id
>> 32);
2368 static unsigned int udf_count_free_bitmap(struct super_block
*sb
,
2369 struct udf_bitmap
*bitmap
)
2371 struct buffer_head
*bh
= NULL
;
2372 unsigned int accum
= 0;
2374 int block
= 0, newblock
;
2375 struct kernel_lb_addr loc
;
2379 struct spaceBitmapDesc
*bm
;
2381 loc
.logicalBlockNum
= bitmap
->s_extPosition
;
2382 loc
.partitionReferenceNum
= UDF_SB(sb
)->s_partition
;
2383 bh
= udf_read_ptagged(sb
, &loc
, 0, &ident
);
2386 udf_err(sb
, "udf_count_free failed\n");
2388 } else if (ident
!= TAG_IDENT_SBD
) {
2390 udf_err(sb
, "udf_count_free failed\n");
2394 bm
= (struct spaceBitmapDesc
*)bh
->b_data
;
2395 bytes
= le32_to_cpu(bm
->numOfBytes
);
2396 index
= sizeof(struct spaceBitmapDesc
); /* offset in first block only */
2397 ptr
= (uint8_t *)bh
->b_data
;
2400 u32 cur_bytes
= min_t(u32
, bytes
, sb
->s_blocksize
- index
);
2401 accum
+= bitmap_weight((const unsigned long *)(ptr
+ index
),
2406 newblock
= udf_get_lb_pblock(sb
, &loc
, ++block
);
2407 bh
= udf_tread(sb
, newblock
);
2409 udf_debug("read failed\n");
2413 ptr
= (uint8_t *)bh
->b_data
;
2421 static unsigned int udf_count_free_table(struct super_block
*sb
,
2422 struct inode
*table
)
2424 unsigned int accum
= 0;
2426 struct kernel_lb_addr eloc
;
2428 struct extent_position epos
;
2430 mutex_lock(&UDF_SB(sb
)->s_alloc_mutex
);
2431 epos
.block
= UDF_I(table
)->i_location
;
2432 epos
.offset
= sizeof(struct unallocSpaceEntry
);
2435 while ((etype
= udf_next_aext(table
, &epos
, &eloc
, &elen
, 1)) != -1)
2436 accum
+= (elen
>> table
->i_sb
->s_blocksize_bits
);
2439 mutex_unlock(&UDF_SB(sb
)->s_alloc_mutex
);
2444 static unsigned int udf_count_free(struct super_block
*sb
)
2446 unsigned int accum
= 0;
2447 struct udf_sb_info
*sbi
;
2448 struct udf_part_map
*map
;
2451 if (sbi
->s_lvid_bh
) {
2452 struct logicalVolIntegrityDesc
*lvid
=
2453 (struct logicalVolIntegrityDesc
*)
2454 sbi
->s_lvid_bh
->b_data
;
2455 if (le32_to_cpu(lvid
->numOfPartitions
) > sbi
->s_partition
) {
2456 accum
= le32_to_cpu(
2457 lvid
->freeSpaceTable
[sbi
->s_partition
]);
2458 if (accum
== 0xFFFFFFFF)
2466 map
= &sbi
->s_partmaps
[sbi
->s_partition
];
2467 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
) {
2468 accum
+= udf_count_free_bitmap(sb
,
2469 map
->s_uspace
.s_bitmap
);
2471 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
) {
2472 accum
+= udf_count_free_bitmap(sb
,
2473 map
->s_fspace
.s_bitmap
);
2478 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
) {
2479 accum
+= udf_count_free_table(sb
,
2480 map
->s_uspace
.s_table
);
2482 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
) {
2483 accum
+= udf_count_free_table(sb
,
2484 map
->s_fspace
.s_table
);