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 <asm/byteorder.h>
64 #include <linux/init.h>
65 #include <asm/uaccess.h>
67 #define VDS_POS_PRIMARY_VOL_DESC 0
68 #define VDS_POS_UNALLOC_SPACE_DESC 1
69 #define VDS_POS_LOGICAL_VOL_DESC 2
70 #define VDS_POS_PARTITION_DESC 3
71 #define VDS_POS_IMP_USE_VOL_DESC 4
72 #define VDS_POS_VOL_DESC_PTR 5
73 #define VDS_POS_TERMINATING_DESC 6
74 #define VDS_POS_LENGTH 7
76 #define UDF_DEFAULT_BLOCKSIZE 2048
78 enum { UDF_MAX_LINKS
= 0xffff };
80 /* These are the "meat" - everything else is stuffing */
81 static int udf_fill_super(struct super_block
*, void *, int);
82 static void udf_put_super(struct super_block
*);
83 static int udf_sync_fs(struct super_block
*, int);
84 static int udf_remount_fs(struct super_block
*, int *, char *);
85 static void udf_load_logicalvolint(struct super_block
*, struct kernel_extent_ad
);
86 static int udf_find_fileset(struct super_block
*, struct kernel_lb_addr
*,
87 struct kernel_lb_addr
*);
88 static void udf_load_fileset(struct super_block
*, struct buffer_head
*,
89 struct kernel_lb_addr
*);
90 static void udf_open_lvid(struct super_block
*);
91 static void udf_close_lvid(struct super_block
*);
92 static unsigned int udf_count_free(struct super_block
*);
93 static int udf_statfs(struct dentry
*, struct kstatfs
*);
94 static int udf_show_options(struct seq_file
*, struct dentry
*);
96 struct logicalVolIntegrityDescImpUse
*udf_sb_lvidiu(struct udf_sb_info
*sbi
)
98 struct logicalVolIntegrityDesc
*lvid
=
99 (struct logicalVolIntegrityDesc
*)sbi
->s_lvid_bh
->b_data
;
100 __u32 number_of_partitions
= le32_to_cpu(lvid
->numOfPartitions
);
101 __u32 offset
= number_of_partitions
* 2 *
102 sizeof(uint32_t)/sizeof(uint8_t);
103 return (struct logicalVolIntegrityDescImpUse
*)&(lvid
->impUse
[offset
]);
106 /* UDF filesystem type */
107 static struct dentry
*udf_mount(struct file_system_type
*fs_type
,
108 int flags
, const char *dev_name
, void *data
)
110 return mount_bdev(fs_type
, flags
, dev_name
, data
, udf_fill_super
);
113 static struct file_system_type udf_fstype
= {
114 .owner
= THIS_MODULE
,
117 .kill_sb
= kill_block_super
,
118 .fs_flags
= FS_REQUIRES_DEV
,
121 static struct kmem_cache
*udf_inode_cachep
;
123 static struct inode
*udf_alloc_inode(struct super_block
*sb
)
125 struct udf_inode_info
*ei
;
126 ei
= kmem_cache_alloc(udf_inode_cachep
, GFP_KERNEL
);
131 ei
->i_lenExtents
= 0;
132 ei
->i_next_alloc_block
= 0;
133 ei
->i_next_alloc_goal
= 0;
135 init_rwsem(&ei
->i_data_sem
);
137 return &ei
->vfs_inode
;
140 static void udf_i_callback(struct rcu_head
*head
)
142 struct inode
*inode
= container_of(head
, struct inode
, i_rcu
);
143 kmem_cache_free(udf_inode_cachep
, UDF_I(inode
));
146 static void udf_destroy_inode(struct inode
*inode
)
148 call_rcu(&inode
->i_rcu
, udf_i_callback
);
151 static void init_once(void *foo
)
153 struct udf_inode_info
*ei
= (struct udf_inode_info
*)foo
;
155 ei
->i_ext
.i_data
= NULL
;
156 inode_init_once(&ei
->vfs_inode
);
159 static int init_inodecache(void)
161 udf_inode_cachep
= kmem_cache_create("udf_inode_cache",
162 sizeof(struct udf_inode_info
),
163 0, (SLAB_RECLAIM_ACCOUNT
|
166 if (!udf_inode_cachep
)
171 static void destroy_inodecache(void)
173 kmem_cache_destroy(udf_inode_cachep
);
176 /* Superblock operations */
177 static const struct super_operations udf_sb_ops
= {
178 .alloc_inode
= udf_alloc_inode
,
179 .destroy_inode
= udf_destroy_inode
,
180 .write_inode
= udf_write_inode
,
181 .evict_inode
= udf_evict_inode
,
182 .put_super
= udf_put_super
,
183 .sync_fs
= udf_sync_fs
,
184 .statfs
= udf_statfs
,
185 .remount_fs
= udf_remount_fs
,
186 .show_options
= udf_show_options
,
191 unsigned int blocksize
;
192 unsigned int session
;
193 unsigned int lastblock
;
196 unsigned short partition
;
197 unsigned int fileset
;
198 unsigned int rootdir
;
205 struct nls_table
*nls_map
;
208 static int __init
init_udf_fs(void)
212 err
= init_inodecache();
215 err
= register_filesystem(&udf_fstype
);
222 destroy_inodecache();
228 static void __exit
exit_udf_fs(void)
230 unregister_filesystem(&udf_fstype
);
231 destroy_inodecache();
234 module_init(init_udf_fs
)
235 module_exit(exit_udf_fs
)
237 static int udf_sb_alloc_partition_maps(struct super_block
*sb
, u32 count
)
239 struct udf_sb_info
*sbi
= UDF_SB(sb
);
241 sbi
->s_partmaps
= kcalloc(count
, sizeof(struct udf_part_map
),
243 if (!sbi
->s_partmaps
) {
244 udf_err(sb
, "Unable to allocate space for %d partition maps\n",
246 sbi
->s_partitions
= 0;
250 sbi
->s_partitions
= count
;
254 static int udf_show_options(struct seq_file
*seq
, struct dentry
*root
)
256 struct super_block
*sb
= root
->d_sb
;
257 struct udf_sb_info
*sbi
= UDF_SB(sb
);
259 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_STRICT
))
260 seq_puts(seq
, ",nostrict");
261 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_BLOCKSIZE_SET
))
262 seq_printf(seq
, ",bs=%lu", sb
->s_blocksize
);
263 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNHIDE
))
264 seq_puts(seq
, ",unhide");
265 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNDELETE
))
266 seq_puts(seq
, ",undelete");
267 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_AD_IN_ICB
))
268 seq_puts(seq
, ",noadinicb");
269 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_SHORT_AD
))
270 seq_puts(seq
, ",shortad");
271 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_FORGET
))
272 seq_puts(seq
, ",uid=forget");
273 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_IGNORE
))
274 seq_puts(seq
, ",uid=ignore");
275 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_FORGET
))
276 seq_puts(seq
, ",gid=forget");
277 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_IGNORE
))
278 seq_puts(seq
, ",gid=ignore");
279 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_SET
))
280 seq_printf(seq
, ",uid=%u", sbi
->s_uid
);
281 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_SET
))
282 seq_printf(seq
, ",gid=%u", sbi
->s_gid
);
283 if (sbi
->s_umask
!= 0)
284 seq_printf(seq
, ",umask=%ho", sbi
->s_umask
);
285 if (sbi
->s_fmode
!= UDF_INVALID_MODE
)
286 seq_printf(seq
, ",mode=%ho", sbi
->s_fmode
);
287 if (sbi
->s_dmode
!= UDF_INVALID_MODE
)
288 seq_printf(seq
, ",dmode=%ho", sbi
->s_dmode
);
289 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_SESSION_SET
))
290 seq_printf(seq
, ",session=%u", sbi
->s_session
);
291 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_LASTBLOCK_SET
))
292 seq_printf(seq
, ",lastblock=%u", sbi
->s_last_block
);
293 if (sbi
->s_anchor
!= 0)
294 seq_printf(seq
, ",anchor=%u", sbi
->s_anchor
);
296 * volume, partition, fileset and rootdir seem to be ignored
299 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UTF8
))
300 seq_puts(seq
, ",utf8");
301 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
) && sbi
->s_nls_map
)
302 seq_printf(seq
, ",iocharset=%s", sbi
->s_nls_map
->charset
);
311 * Parse mount options.
314 * The following mount options are supported:
316 * gid= Set the default group.
317 * umask= Set the default umask.
318 * mode= Set the default file permissions.
319 * dmode= Set the default directory permissions.
320 * uid= Set the default user.
321 * bs= Set the block size.
322 * unhide Show otherwise hidden files.
323 * undelete Show deleted files in lists.
324 * adinicb Embed data in the inode (default)
325 * noadinicb Don't embed data in the inode
326 * shortad Use short ad's
327 * longad Use long ad's (default)
328 * nostrict Unset strict conformance
329 * iocharset= Set the NLS character set
331 * The remaining are for debugging and disaster recovery:
333 * novrs Skip volume sequence recognition
335 * The following expect a offset from 0.
337 * session= Set the CDROM session (default= last session)
338 * anchor= Override standard anchor location. (default= 256)
339 * volume= Override the VolumeDesc location. (unused)
340 * partition= Override the PartitionDesc location. (unused)
341 * lastblock= Set the last block of the filesystem/
343 * The following expect a offset from the partition root.
345 * fileset= Override the fileset block location. (unused)
346 * rootdir= Override the root directory location. (unused)
347 * WARNING: overriding the rootdir to a non-directory may
348 * yield highly unpredictable results.
351 * options Pointer to mount options string.
352 * uopts Pointer to mount options variable.
355 * <return> 1 Mount options parsed okay.
356 * <return> 0 Error parsing mount options.
359 * July 1, 1997 - Andrew E. Mileski
360 * Written, tested, and released.
364 Opt_novrs
, Opt_nostrict
, Opt_bs
, Opt_unhide
, Opt_undelete
,
365 Opt_noadinicb
, Opt_adinicb
, Opt_shortad
, Opt_longad
,
366 Opt_gid
, Opt_uid
, Opt_umask
, Opt_session
, Opt_lastblock
,
367 Opt_anchor
, Opt_volume
, Opt_partition
, Opt_fileset
,
368 Opt_rootdir
, Opt_utf8
, Opt_iocharset
,
369 Opt_err
, Opt_uforget
, Opt_uignore
, Opt_gforget
, Opt_gignore
,
373 static const match_table_t tokens
= {
374 {Opt_novrs
, "novrs"},
375 {Opt_nostrict
, "nostrict"},
377 {Opt_unhide
, "unhide"},
378 {Opt_undelete
, "undelete"},
379 {Opt_noadinicb
, "noadinicb"},
380 {Opt_adinicb
, "adinicb"},
381 {Opt_shortad
, "shortad"},
382 {Opt_longad
, "longad"},
383 {Opt_uforget
, "uid=forget"},
384 {Opt_uignore
, "uid=ignore"},
385 {Opt_gforget
, "gid=forget"},
386 {Opt_gignore
, "gid=ignore"},
389 {Opt_umask
, "umask=%o"},
390 {Opt_session
, "session=%u"},
391 {Opt_lastblock
, "lastblock=%u"},
392 {Opt_anchor
, "anchor=%u"},
393 {Opt_volume
, "volume=%u"},
394 {Opt_partition
, "partition=%u"},
395 {Opt_fileset
, "fileset=%u"},
396 {Opt_rootdir
, "rootdir=%u"},
398 {Opt_iocharset
, "iocharset=%s"},
399 {Opt_fmode
, "mode=%o"},
400 {Opt_dmode
, "dmode=%o"},
404 static int udf_parse_options(char *options
, struct udf_options
*uopt
,
411 uopt
->partition
= 0xFFFF;
412 uopt
->session
= 0xFFFFFFFF;
415 uopt
->volume
= 0xFFFFFFFF;
416 uopt
->rootdir
= 0xFFFFFFFF;
417 uopt
->fileset
= 0xFFFFFFFF;
418 uopt
->nls_map
= NULL
;
423 while ((p
= strsep(&options
, ",")) != NULL
) {
424 substring_t args
[MAX_OPT_ARGS
];
429 token
= match_token(p
, tokens
, args
);
435 if (match_int(&args
[0], &option
))
437 uopt
->blocksize
= option
;
438 uopt
->flags
|= (1 << UDF_FLAG_BLOCKSIZE_SET
);
441 uopt
->flags
|= (1 << UDF_FLAG_UNHIDE
);
444 uopt
->flags
|= (1 << UDF_FLAG_UNDELETE
);
447 uopt
->flags
&= ~(1 << UDF_FLAG_USE_AD_IN_ICB
);
450 uopt
->flags
|= (1 << UDF_FLAG_USE_AD_IN_ICB
);
453 uopt
->flags
|= (1 << UDF_FLAG_USE_SHORT_AD
);
456 uopt
->flags
&= ~(1 << UDF_FLAG_USE_SHORT_AD
);
459 if (match_int(args
, &option
))
462 uopt
->flags
|= (1 << UDF_FLAG_GID_SET
);
465 if (match_int(args
, &option
))
468 uopt
->flags
|= (1 << UDF_FLAG_UID_SET
);
471 if (match_octal(args
, &option
))
473 uopt
->umask
= option
;
476 uopt
->flags
&= ~(1 << UDF_FLAG_STRICT
);
479 if (match_int(args
, &option
))
481 uopt
->session
= option
;
483 uopt
->flags
|= (1 << UDF_FLAG_SESSION_SET
);
486 if (match_int(args
, &option
))
488 uopt
->lastblock
= option
;
490 uopt
->flags
|= (1 << UDF_FLAG_LASTBLOCK_SET
);
493 if (match_int(args
, &option
))
495 uopt
->anchor
= option
;
498 if (match_int(args
, &option
))
500 uopt
->volume
= option
;
503 if (match_int(args
, &option
))
505 uopt
->partition
= option
;
508 if (match_int(args
, &option
))
510 uopt
->fileset
= option
;
513 if (match_int(args
, &option
))
515 uopt
->rootdir
= option
;
518 uopt
->flags
|= (1 << UDF_FLAG_UTF8
);
520 #ifdef CONFIG_UDF_NLS
522 uopt
->nls_map
= load_nls(args
[0].from
);
523 uopt
->flags
|= (1 << UDF_FLAG_NLS_MAP
);
527 uopt
->flags
|= (1 << UDF_FLAG_UID_IGNORE
);
530 uopt
->flags
|= (1 << UDF_FLAG_UID_FORGET
);
533 uopt
->flags
|= (1 << UDF_FLAG_GID_IGNORE
);
536 uopt
->flags
|= (1 << UDF_FLAG_GID_FORGET
);
539 if (match_octal(args
, &option
))
541 uopt
->fmode
= option
& 0777;
544 if (match_octal(args
, &option
))
546 uopt
->dmode
= option
& 0777;
549 pr_err("bad mount option \"%s\" or missing value\n", p
);
556 static int udf_remount_fs(struct super_block
*sb
, int *flags
, char *options
)
558 struct udf_options uopt
;
559 struct udf_sb_info
*sbi
= UDF_SB(sb
);
562 uopt
.flags
= sbi
->s_flags
;
563 uopt
.uid
= sbi
->s_uid
;
564 uopt
.gid
= sbi
->s_gid
;
565 uopt
.umask
= sbi
->s_umask
;
566 uopt
.fmode
= sbi
->s_fmode
;
567 uopt
.dmode
= sbi
->s_dmode
;
569 if (!udf_parse_options(options
, &uopt
, true))
572 write_lock(&sbi
->s_cred_lock
);
573 sbi
->s_flags
= uopt
.flags
;
574 sbi
->s_uid
= uopt
.uid
;
575 sbi
->s_gid
= uopt
.gid
;
576 sbi
->s_umask
= uopt
.umask
;
577 sbi
->s_fmode
= uopt
.fmode
;
578 sbi
->s_dmode
= uopt
.dmode
;
579 write_unlock(&sbi
->s_cred_lock
);
581 if (sbi
->s_lvid_bh
) {
582 int write_rev
= le16_to_cpu(udf_sb_lvidiu(sbi
)->minUDFWriteRev
);
583 if (write_rev
> UDF_MAX_WRITE_VERSION
)
587 if ((*flags
& MS_RDONLY
) == (sb
->s_flags
& MS_RDONLY
))
590 if (*flags
& MS_RDONLY
)
599 /* Check Volume Structure Descriptors (ECMA 167 2/9.1) */
600 /* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
601 static loff_t
udf_check_vsd(struct super_block
*sb
)
603 struct volStructDesc
*vsd
= NULL
;
604 loff_t sector
= 32768;
606 struct buffer_head
*bh
= NULL
;
609 struct udf_sb_info
*sbi
;
612 if (sb
->s_blocksize
< sizeof(struct volStructDesc
))
613 sectorsize
= sizeof(struct volStructDesc
);
615 sectorsize
= sb
->s_blocksize
;
617 sector
+= (sbi
->s_session
<< sb
->s_blocksize_bits
);
619 udf_debug("Starting at sector %u (%ld byte sectors)\n",
620 (unsigned int)(sector
>> sb
->s_blocksize_bits
),
622 /* Process the sequence (if applicable) */
623 for (; !nsr02
&& !nsr03
; sector
+= sectorsize
) {
625 bh
= udf_tread(sb
, sector
>> sb
->s_blocksize_bits
);
629 /* Look for ISO descriptors */
630 vsd
= (struct volStructDesc
*)(bh
->b_data
+
631 (sector
& (sb
->s_blocksize
- 1)));
633 if (vsd
->stdIdent
[0] == 0) {
636 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_CD001
,
638 switch (vsd
->structType
) {
640 udf_debug("ISO9660 Boot Record found\n");
643 udf_debug("ISO9660 Primary Volume Descriptor found\n");
646 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
649 udf_debug("ISO9660 Volume Partition Descriptor found\n");
652 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
655 udf_debug("ISO9660 VRS (%u) found\n",
659 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_BEA01
,
662 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_TEA01
,
666 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR02
,
669 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR03
,
679 else if (sector
- (sbi
->s_session
<< sb
->s_blocksize_bits
) == 32768)
685 static int udf_find_fileset(struct super_block
*sb
,
686 struct kernel_lb_addr
*fileset
,
687 struct kernel_lb_addr
*root
)
689 struct buffer_head
*bh
= NULL
;
692 struct udf_sb_info
*sbi
;
694 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
695 fileset
->partitionReferenceNum
!= 0xFFFF) {
696 bh
= udf_read_ptagged(sb
, fileset
, 0, &ident
);
700 } else if (ident
!= TAG_IDENT_FSD
) {
709 /* Search backwards through the partitions */
710 struct kernel_lb_addr newfileset
;
712 /* --> cvg: FIXME - is it reasonable? */
715 for (newfileset
.partitionReferenceNum
= sbi
->s_partitions
- 1;
716 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
717 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
718 fileset
->partitionReferenceNum
== 0xFFFF);
719 newfileset
.partitionReferenceNum
--) {
720 lastblock
= sbi
->s_partmaps
721 [newfileset
.partitionReferenceNum
]
723 newfileset
.logicalBlockNum
= 0;
726 bh
= udf_read_ptagged(sb
, &newfileset
, 0,
729 newfileset
.logicalBlockNum
++;
736 struct spaceBitmapDesc
*sp
;
737 sp
= (struct spaceBitmapDesc
*)
739 newfileset
.logicalBlockNum
+= 1 +
740 ((le32_to_cpu(sp
->numOfBytes
) +
741 sizeof(struct spaceBitmapDesc
)
742 - 1) >> sb
->s_blocksize_bits
);
747 *fileset
= newfileset
;
750 newfileset
.logicalBlockNum
++;
755 } while (newfileset
.logicalBlockNum
< lastblock
&&
756 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
757 fileset
->partitionReferenceNum
== 0xFFFF);
761 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
762 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
) {
763 udf_debug("Fileset at block=%d, partition=%d\n",
764 fileset
->logicalBlockNum
,
765 fileset
->partitionReferenceNum
);
767 sbi
->s_partition
= fileset
->partitionReferenceNum
;
768 udf_load_fileset(sb
, bh
, root
);
775 static int udf_load_pvoldesc(struct super_block
*sb
, sector_t block
)
777 struct primaryVolDesc
*pvoldesc
;
778 struct ustr
*instr
, *outstr
;
779 struct buffer_head
*bh
;
783 instr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
787 outstr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
791 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
795 BUG_ON(ident
!= TAG_IDENT_PVD
);
797 pvoldesc
= (struct primaryVolDesc
*)bh
->b_data
;
799 if (udf_disk_stamp_to_time(&UDF_SB(sb
)->s_record_time
,
800 pvoldesc
->recordingDateAndTime
)) {
802 struct timestamp
*ts
= &pvoldesc
->recordingDateAndTime
;
803 udf_debug("recording time %04u/%02u/%02u %02u:%02u (%x)\n",
804 le16_to_cpu(ts
->year
), ts
->month
, ts
->day
, ts
->hour
,
805 ts
->minute
, le16_to_cpu(ts
->typeAndTimezone
));
809 if (!udf_build_ustr(instr
, pvoldesc
->volIdent
, 32))
810 if (udf_CS0toUTF8(outstr
, instr
)) {
811 strncpy(UDF_SB(sb
)->s_volume_ident
, outstr
->u_name
,
812 outstr
->u_len
> 31 ? 31 : outstr
->u_len
);
813 udf_debug("volIdent[] = '%s'\n",
814 UDF_SB(sb
)->s_volume_ident
);
817 if (!udf_build_ustr(instr
, pvoldesc
->volSetIdent
, 128))
818 if (udf_CS0toUTF8(outstr
, instr
))
819 udf_debug("volSetIdent[] = '%s'\n", outstr
->u_name
);
830 struct inode
*udf_find_metadata_inode_efe(struct super_block
*sb
,
831 u32 meta_file_loc
, u32 partition_num
)
833 struct kernel_lb_addr addr
;
834 struct inode
*metadata_fe
;
836 addr
.logicalBlockNum
= meta_file_loc
;
837 addr
.partitionReferenceNum
= partition_num
;
839 metadata_fe
= udf_iget(sb
, &addr
);
841 if (metadata_fe
== NULL
)
842 udf_warn(sb
, "metadata inode efe not found\n");
843 else if (UDF_I(metadata_fe
)->i_alloc_type
!= ICBTAG_FLAG_AD_SHORT
) {
844 udf_warn(sb
, "metadata inode efe does not have short allocation descriptors!\n");
852 static int udf_load_metadata_files(struct super_block
*sb
, int partition
)
854 struct udf_sb_info
*sbi
= UDF_SB(sb
);
855 struct udf_part_map
*map
;
856 struct udf_meta_data
*mdata
;
857 struct kernel_lb_addr addr
;
859 map
= &sbi
->s_partmaps
[partition
];
860 mdata
= &map
->s_type_specific
.s_metadata
;
862 /* metadata address */
863 udf_debug("Metadata file location: block = %d part = %d\n",
864 mdata
->s_meta_file_loc
, map
->s_partition_num
);
866 mdata
->s_metadata_fe
= udf_find_metadata_inode_efe(sb
,
867 mdata
->s_meta_file_loc
, map
->s_partition_num
);
869 if (mdata
->s_metadata_fe
== NULL
) {
870 /* mirror file entry */
871 udf_debug("Mirror metadata file location: block = %d part = %d\n",
872 mdata
->s_mirror_file_loc
, map
->s_partition_num
);
874 mdata
->s_mirror_fe
= udf_find_metadata_inode_efe(sb
,
875 mdata
->s_mirror_file_loc
, map
->s_partition_num
);
877 if (mdata
->s_mirror_fe
== NULL
) {
878 udf_err(sb
, "Both metadata and mirror metadata inode efe can not found\n");
886 * Load only if bitmap file location differs from 0xFFFFFFFF (DCN-5102)
888 if (mdata
->s_bitmap_file_loc
!= 0xFFFFFFFF) {
889 addr
.logicalBlockNum
= mdata
->s_bitmap_file_loc
;
890 addr
.partitionReferenceNum
= map
->s_partition_num
;
892 udf_debug("Bitmap file location: block = %d part = %d\n",
893 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
895 mdata
->s_bitmap_fe
= udf_iget(sb
, &addr
);
897 if (mdata
->s_bitmap_fe
== NULL
) {
898 if (sb
->s_flags
& MS_RDONLY
)
899 udf_warn(sb
, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n");
901 udf_err(sb
, "bitmap inode efe not found and attempted read-write mount\n");
907 udf_debug("udf_load_metadata_files Ok\n");
915 static void udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
,
916 struct kernel_lb_addr
*root
)
918 struct fileSetDesc
*fset
;
920 fset
= (struct fileSetDesc
*)bh
->b_data
;
922 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
924 UDF_SB(sb
)->s_serial_number
= le16_to_cpu(fset
->descTag
.tagSerialNum
);
926 udf_debug("Rootdir at block=%d, partition=%d\n",
927 root
->logicalBlockNum
, root
->partitionReferenceNum
);
930 int udf_compute_nr_groups(struct super_block
*sb
, u32 partition
)
932 struct udf_part_map
*map
= &UDF_SB(sb
)->s_partmaps
[partition
];
933 return DIV_ROUND_UP(map
->s_partition_len
+
934 (sizeof(struct spaceBitmapDesc
) << 3),
935 sb
->s_blocksize
* 8);
938 static struct udf_bitmap
*udf_sb_alloc_bitmap(struct super_block
*sb
, u32 index
)
940 struct udf_bitmap
*bitmap
;
944 nr_groups
= udf_compute_nr_groups(sb
, index
);
945 size
= sizeof(struct udf_bitmap
) +
946 (sizeof(struct buffer_head
*) * nr_groups
);
948 if (size
<= PAGE_SIZE
)
949 bitmap
= kzalloc(size
, GFP_KERNEL
);
951 bitmap
= vzalloc(size
); /* TODO: get rid of vzalloc */
956 bitmap
->s_block_bitmap
= (struct buffer_head
**)(bitmap
+ 1);
957 bitmap
->s_nr_groups
= nr_groups
;
961 static int udf_fill_partdesc_info(struct super_block
*sb
,
962 struct partitionDesc
*p
, int p_index
)
964 struct udf_part_map
*map
;
965 struct udf_sb_info
*sbi
= UDF_SB(sb
);
966 struct partitionHeaderDesc
*phd
;
968 map
= &sbi
->s_partmaps
[p_index
];
970 map
->s_partition_len
= le32_to_cpu(p
->partitionLength
); /* blocks */
971 map
->s_partition_root
= le32_to_cpu(p
->partitionStartingLocation
);
973 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY
))
974 map
->s_partition_flags
|= UDF_PART_FLAG_READ_ONLY
;
975 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE
))
976 map
->s_partition_flags
|= UDF_PART_FLAG_WRITE_ONCE
;
977 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE
))
978 map
->s_partition_flags
|= UDF_PART_FLAG_REWRITABLE
;
979 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE
))
980 map
->s_partition_flags
|= UDF_PART_FLAG_OVERWRITABLE
;
982 udf_debug("Partition (%d type %x) starts at physical %d, block length %d\n",
983 p_index
, map
->s_partition_type
,
984 map
->s_partition_root
, map
->s_partition_len
);
986 if (strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR02
) &&
987 strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR03
))
990 phd
= (struct partitionHeaderDesc
*)p
->partitionContentsUse
;
991 if (phd
->unallocSpaceTable
.extLength
) {
992 struct kernel_lb_addr loc
= {
993 .logicalBlockNum
= le32_to_cpu(
994 phd
->unallocSpaceTable
.extPosition
),
995 .partitionReferenceNum
= p_index
,
998 map
->s_uspace
.s_table
= udf_iget(sb
, &loc
);
999 if (!map
->s_uspace
.s_table
) {
1000 udf_debug("cannot load unallocSpaceTable (part %d)\n",
1004 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_TABLE
;
1005 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1006 p_index
, map
->s_uspace
.s_table
->i_ino
);
1009 if (phd
->unallocSpaceBitmap
.extLength
) {
1010 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1013 map
->s_uspace
.s_bitmap
= bitmap
;
1014 bitmap
->s_extLength
= le32_to_cpu(
1015 phd
->unallocSpaceBitmap
.extLength
);
1016 bitmap
->s_extPosition
= le32_to_cpu(
1017 phd
->unallocSpaceBitmap
.extPosition
);
1018 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_BITMAP
;
1019 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
1020 p_index
, bitmap
->s_extPosition
);
1023 if (phd
->partitionIntegrityTable
.extLength
)
1024 udf_debug("partitionIntegrityTable (part %d)\n", p_index
);
1026 if (phd
->freedSpaceTable
.extLength
) {
1027 struct kernel_lb_addr loc
= {
1028 .logicalBlockNum
= le32_to_cpu(
1029 phd
->freedSpaceTable
.extPosition
),
1030 .partitionReferenceNum
= p_index
,
1033 map
->s_fspace
.s_table
= udf_iget(sb
, &loc
);
1034 if (!map
->s_fspace
.s_table
) {
1035 udf_debug("cannot load freedSpaceTable (part %d)\n",
1040 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_TABLE
;
1041 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1042 p_index
, map
->s_fspace
.s_table
->i_ino
);
1045 if (phd
->freedSpaceBitmap
.extLength
) {
1046 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1049 map
->s_fspace
.s_bitmap
= bitmap
;
1050 bitmap
->s_extLength
= le32_to_cpu(
1051 phd
->freedSpaceBitmap
.extLength
);
1052 bitmap
->s_extPosition
= le32_to_cpu(
1053 phd
->freedSpaceBitmap
.extPosition
);
1054 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_BITMAP
;
1055 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1056 p_index
, bitmap
->s_extPosition
);
1061 static void udf_find_vat_block(struct super_block
*sb
, int p_index
,
1062 int type1_index
, sector_t start_block
)
1064 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1065 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1067 struct kernel_lb_addr ino
;
1070 * VAT file entry is in the last recorded block. Some broken disks have
1071 * it a few blocks before so try a bit harder...
1073 ino
.partitionReferenceNum
= type1_index
;
1074 for (vat_block
= start_block
;
1075 vat_block
>= map
->s_partition_root
&&
1076 vat_block
>= start_block
- 3 &&
1077 !sbi
->s_vat_inode
; vat_block
--) {
1078 ino
.logicalBlockNum
= vat_block
- map
->s_partition_root
;
1079 sbi
->s_vat_inode
= udf_iget(sb
, &ino
);
1083 static int udf_load_vat(struct super_block
*sb
, int p_index
, int type1_index
)
1085 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1086 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1087 struct buffer_head
*bh
= NULL
;
1088 struct udf_inode_info
*vati
;
1090 struct virtualAllocationTable20
*vat20
;
1091 sector_t blocks
= sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
;
1093 udf_find_vat_block(sb
, p_index
, type1_index
, sbi
->s_last_block
);
1094 if (!sbi
->s_vat_inode
&&
1095 sbi
->s_last_block
!= blocks
- 1) {
1096 pr_notice("Failed to read VAT inode from the last recorded block (%lu), retrying with the last block of the device (%lu).\n",
1097 (unsigned long)sbi
->s_last_block
,
1098 (unsigned long)blocks
- 1);
1099 udf_find_vat_block(sb
, p_index
, type1_index
, blocks
- 1);
1101 if (!sbi
->s_vat_inode
)
1104 if (map
->s_partition_type
== UDF_VIRTUAL_MAP15
) {
1105 map
->s_type_specific
.s_virtual
.s_start_offset
= 0;
1106 map
->s_type_specific
.s_virtual
.s_num_entries
=
1107 (sbi
->s_vat_inode
->i_size
- 36) >> 2;
1108 } else if (map
->s_partition_type
== UDF_VIRTUAL_MAP20
) {
1109 vati
= UDF_I(sbi
->s_vat_inode
);
1110 if (vati
->i_alloc_type
!= ICBTAG_FLAG_AD_IN_ICB
) {
1111 pos
= udf_block_map(sbi
->s_vat_inode
, 0);
1112 bh
= sb_bread(sb
, pos
);
1115 vat20
= (struct virtualAllocationTable20
*)bh
->b_data
;
1117 vat20
= (struct virtualAllocationTable20
*)
1121 map
->s_type_specific
.s_virtual
.s_start_offset
=
1122 le16_to_cpu(vat20
->lengthHeader
);
1123 map
->s_type_specific
.s_virtual
.s_num_entries
=
1124 (sbi
->s_vat_inode
->i_size
-
1125 map
->s_type_specific
.s_virtual
.
1126 s_start_offset
) >> 2;
1132 static int udf_load_partdesc(struct super_block
*sb
, sector_t block
)
1134 struct buffer_head
*bh
;
1135 struct partitionDesc
*p
;
1136 struct udf_part_map
*map
;
1137 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1139 uint16_t partitionNumber
;
1143 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1146 if (ident
!= TAG_IDENT_PD
)
1149 p
= (struct partitionDesc
*)bh
->b_data
;
1150 partitionNumber
= le16_to_cpu(p
->partitionNumber
);
1152 /* First scan for TYPE1, SPARABLE and METADATA partitions */
1153 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1154 map
= &sbi
->s_partmaps
[i
];
1155 udf_debug("Searching map: (%d == %d)\n",
1156 map
->s_partition_num
, partitionNumber
);
1157 if (map
->s_partition_num
== partitionNumber
&&
1158 (map
->s_partition_type
== UDF_TYPE1_MAP15
||
1159 map
->s_partition_type
== UDF_SPARABLE_MAP15
))
1163 if (i
>= sbi
->s_partitions
) {
1164 udf_debug("Partition (%d) not found in partition map\n",
1169 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1172 * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and
1173 * PHYSICAL partitions are already set up
1176 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1177 map
= &sbi
->s_partmaps
[i
];
1179 if (map
->s_partition_num
== partitionNumber
&&
1180 (map
->s_partition_type
== UDF_VIRTUAL_MAP15
||
1181 map
->s_partition_type
== UDF_VIRTUAL_MAP20
||
1182 map
->s_partition_type
== UDF_METADATA_MAP25
))
1186 if (i
>= sbi
->s_partitions
)
1189 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1193 if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
1194 ret
= udf_load_metadata_files(sb
, i
);
1196 udf_err(sb
, "error loading MetaData partition map %d\n",
1201 ret
= udf_load_vat(sb
, i
, type1_idx
);
1205 * Mark filesystem read-only if we have a partition with
1206 * virtual map since we don't handle writing to it (we
1207 * overwrite blocks instead of relocating them).
1209 sb
->s_flags
|= MS_RDONLY
;
1210 pr_notice("Filesystem marked read-only because writing to pseudooverwrite partition is not implemented\n");
1213 /* In case loading failed, we handle cleanup in udf_fill_super */
1218 static int udf_load_logicalvol(struct super_block
*sb
, sector_t block
,
1219 struct kernel_lb_addr
*fileset
)
1221 struct logicalVolDesc
*lvd
;
1224 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1225 struct genericPartitionMap
*gpm
;
1227 struct buffer_head
*bh
;
1230 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1233 BUG_ON(ident
!= TAG_IDENT_LVD
);
1234 lvd
= (struct logicalVolDesc
*)bh
->b_data
;
1236 i
= udf_sb_alloc_partition_maps(sb
, le32_to_cpu(lvd
->numPartitionMaps
));
1242 for (i
= 0, offset
= 0;
1243 i
< sbi
->s_partitions
&& offset
< le32_to_cpu(lvd
->mapTableLength
);
1244 i
++, offset
+= gpm
->partitionMapLength
) {
1245 struct udf_part_map
*map
= &sbi
->s_partmaps
[i
];
1246 gpm
= (struct genericPartitionMap
*)
1247 &(lvd
->partitionMaps
[offset
]);
1248 type
= gpm
->partitionMapType
;
1250 struct genericPartitionMap1
*gpm1
=
1251 (struct genericPartitionMap1
*)gpm
;
1252 map
->s_partition_type
= UDF_TYPE1_MAP15
;
1253 map
->s_volumeseqnum
= le16_to_cpu(gpm1
->volSeqNum
);
1254 map
->s_partition_num
= le16_to_cpu(gpm1
->partitionNum
);
1255 map
->s_partition_func
= NULL
;
1256 } else if (type
== 2) {
1257 struct udfPartitionMap2
*upm2
=
1258 (struct udfPartitionMap2
*)gpm
;
1259 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
,
1260 strlen(UDF_ID_VIRTUAL
))) {
1262 le16_to_cpu(((__le16
*)upm2
->partIdent
.
1265 map
->s_partition_type
=
1267 map
->s_partition_func
=
1268 udf_get_pblock_virt15
;
1270 map
->s_partition_type
=
1272 map
->s_partition_func
=
1273 udf_get_pblock_virt20
;
1275 } else if (!strncmp(upm2
->partIdent
.ident
,
1277 strlen(UDF_ID_SPARABLE
))) {
1279 struct sparingTable
*st
;
1280 struct sparablePartitionMap
*spm
=
1281 (struct sparablePartitionMap
*)gpm
;
1283 map
->s_partition_type
= UDF_SPARABLE_MAP15
;
1284 map
->s_type_specific
.s_sparing
.s_packet_len
=
1285 le16_to_cpu(spm
->packetLength
);
1286 for (j
= 0; j
< spm
->numSparingTables
; j
++) {
1287 struct buffer_head
*bh2
;
1290 spm
->locSparingTable
[j
]);
1291 bh2
= udf_read_tagged(sb
, loc
, loc
,
1293 map
->s_type_specific
.s_sparing
.
1294 s_spar_map
[j
] = bh2
;
1299 st
= (struct sparingTable
*)bh2
->b_data
;
1300 if (ident
!= 0 || strncmp(
1301 st
->sparingIdent
.ident
,
1303 strlen(UDF_ID_SPARING
))) {
1305 map
->s_type_specific
.s_sparing
.
1306 s_spar_map
[j
] = NULL
;
1309 map
->s_partition_func
= udf_get_pblock_spar15
;
1310 } else if (!strncmp(upm2
->partIdent
.ident
,
1312 strlen(UDF_ID_METADATA
))) {
1313 struct udf_meta_data
*mdata
=
1314 &map
->s_type_specific
.s_metadata
;
1315 struct metadataPartitionMap
*mdm
=
1316 (struct metadataPartitionMap
*)
1317 &(lvd
->partitionMaps
[offset
]);
1318 udf_debug("Parsing Logical vol part %d type %d id=%s\n",
1319 i
, type
, UDF_ID_METADATA
);
1321 map
->s_partition_type
= UDF_METADATA_MAP25
;
1322 map
->s_partition_func
= udf_get_pblock_meta25
;
1324 mdata
->s_meta_file_loc
=
1325 le32_to_cpu(mdm
->metadataFileLoc
);
1326 mdata
->s_mirror_file_loc
=
1327 le32_to_cpu(mdm
->metadataMirrorFileLoc
);
1328 mdata
->s_bitmap_file_loc
=
1329 le32_to_cpu(mdm
->metadataBitmapFileLoc
);
1330 mdata
->s_alloc_unit_size
=
1331 le32_to_cpu(mdm
->allocUnitSize
);
1332 mdata
->s_align_unit_size
=
1333 le16_to_cpu(mdm
->alignUnitSize
);
1334 if (mdm
->flags
& 0x01)
1335 mdata
->s_flags
|= MF_DUPLICATE_MD
;
1337 udf_debug("Metadata Ident suffix=0x%x\n",
1338 le16_to_cpu(*(__le16
*)
1339 mdm
->partIdent
.identSuffix
));
1340 udf_debug("Metadata part num=%d\n",
1341 le16_to_cpu(mdm
->partitionNum
));
1342 udf_debug("Metadata part alloc unit size=%d\n",
1343 le32_to_cpu(mdm
->allocUnitSize
));
1344 udf_debug("Metadata file loc=%d\n",
1345 le32_to_cpu(mdm
->metadataFileLoc
));
1346 udf_debug("Mirror file loc=%d\n",
1347 le32_to_cpu(mdm
->metadataMirrorFileLoc
));
1348 udf_debug("Bitmap file loc=%d\n",
1349 le32_to_cpu(mdm
->metadataBitmapFileLoc
));
1350 udf_debug("Flags: %d %d\n",
1351 mdata
->s_flags
, mdm
->flags
);
1353 udf_debug("Unknown ident: %s\n",
1354 upm2
->partIdent
.ident
);
1357 map
->s_volumeseqnum
= le16_to_cpu(upm2
->volSeqNum
);
1358 map
->s_partition_num
= le16_to_cpu(upm2
->partitionNum
);
1360 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1361 i
, map
->s_partition_num
, type
, map
->s_volumeseqnum
);
1365 struct long_ad
*la
= (struct long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
1367 *fileset
= lelb_to_cpu(la
->extLocation
);
1368 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1369 fileset
->logicalBlockNum
,
1370 fileset
->partitionReferenceNum
);
1372 if (lvd
->integritySeqExt
.extLength
)
1373 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
1381 * udf_load_logicalvolint
1384 static void udf_load_logicalvolint(struct super_block
*sb
, struct kernel_extent_ad loc
)
1386 struct buffer_head
*bh
= NULL
;
1388 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1389 struct logicalVolIntegrityDesc
*lvid
;
1391 while (loc
.extLength
> 0 &&
1392 (bh
= udf_read_tagged(sb
, loc
.extLocation
,
1393 loc
.extLocation
, &ident
)) &&
1394 ident
== TAG_IDENT_LVID
) {
1395 sbi
->s_lvid_bh
= bh
;
1396 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1398 if (lvid
->nextIntegrityExt
.extLength
)
1399 udf_load_logicalvolint(sb
,
1400 leea_to_cpu(lvid
->nextIntegrityExt
));
1402 if (sbi
->s_lvid_bh
!= bh
)
1404 loc
.extLength
-= sb
->s_blocksize
;
1407 if (sbi
->s_lvid_bh
!= bh
)
1412 * udf_process_sequence
1415 * Process a main/reserve volume descriptor sequence.
1418 * sb Pointer to _locked_ superblock.
1419 * block First block of first extent of the sequence.
1420 * lastblock Lastblock of first extent of the sequence.
1423 * July 1, 1997 - Andrew E. Mileski
1424 * Written, tested, and released.
1426 static noinline
int udf_process_sequence(struct super_block
*sb
, long block
,
1427 long lastblock
, struct kernel_lb_addr
*fileset
)
1429 struct buffer_head
*bh
= NULL
;
1430 struct udf_vds_record vds
[VDS_POS_LENGTH
];
1431 struct udf_vds_record
*curr
;
1432 struct generic_desc
*gd
;
1433 struct volDescPtr
*vdp
;
1437 long next_s
= 0, next_e
= 0;
1439 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
1442 * Read the main descriptor sequence and find which descriptors
1445 for (; (!done
&& block
<= lastblock
); block
++) {
1447 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1450 "Block %llu of volume descriptor sequence is corrupted or we could not read it\n",
1451 (unsigned long long)block
);
1455 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1456 gd
= (struct generic_desc
*)bh
->b_data
;
1457 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
1459 case TAG_IDENT_PVD
: /* ISO 13346 3/10.1 */
1460 curr
= &vds
[VDS_POS_PRIMARY_VOL_DESC
];
1461 if (vdsn
>= curr
->volDescSeqNum
) {
1462 curr
->volDescSeqNum
= vdsn
;
1463 curr
->block
= block
;
1466 case TAG_IDENT_VDP
: /* ISO 13346 3/10.3 */
1467 curr
= &vds
[VDS_POS_VOL_DESC_PTR
];
1468 if (vdsn
>= curr
->volDescSeqNum
) {
1469 curr
->volDescSeqNum
= vdsn
;
1470 curr
->block
= block
;
1472 vdp
= (struct volDescPtr
*)bh
->b_data
;
1473 next_s
= le32_to_cpu(
1474 vdp
->nextVolDescSeqExt
.extLocation
);
1475 next_e
= le32_to_cpu(
1476 vdp
->nextVolDescSeqExt
.extLength
);
1477 next_e
= next_e
>> sb
->s_blocksize_bits
;
1481 case TAG_IDENT_IUVD
: /* ISO 13346 3/10.4 */
1482 curr
= &vds
[VDS_POS_IMP_USE_VOL_DESC
];
1483 if (vdsn
>= curr
->volDescSeqNum
) {
1484 curr
->volDescSeqNum
= vdsn
;
1485 curr
->block
= block
;
1488 case TAG_IDENT_PD
: /* ISO 13346 3/10.5 */
1489 curr
= &vds
[VDS_POS_PARTITION_DESC
];
1491 curr
->block
= block
;
1493 case TAG_IDENT_LVD
: /* ISO 13346 3/10.6 */
1494 curr
= &vds
[VDS_POS_LOGICAL_VOL_DESC
];
1495 if (vdsn
>= curr
->volDescSeqNum
) {
1496 curr
->volDescSeqNum
= vdsn
;
1497 curr
->block
= block
;
1500 case TAG_IDENT_USD
: /* ISO 13346 3/10.8 */
1501 curr
= &vds
[VDS_POS_UNALLOC_SPACE_DESC
];
1502 if (vdsn
>= curr
->volDescSeqNum
) {
1503 curr
->volDescSeqNum
= vdsn
;
1504 curr
->block
= block
;
1507 case TAG_IDENT_TD
: /* ISO 13346 3/10.9 */
1508 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1512 next_s
= next_e
= 0;
1520 * Now read interesting descriptors again and process them
1521 * in a suitable order
1523 if (!vds
[VDS_POS_PRIMARY_VOL_DESC
].block
) {
1524 udf_err(sb
, "Primary Volume Descriptor not found!\n");
1527 if (udf_load_pvoldesc(sb
, vds
[VDS_POS_PRIMARY_VOL_DESC
].block
))
1530 if (vds
[VDS_POS_LOGICAL_VOL_DESC
].block
&& udf_load_logicalvol(sb
,
1531 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
, fileset
))
1534 if (vds
[VDS_POS_PARTITION_DESC
].block
) {
1536 * We rescan the whole descriptor sequence to find
1537 * partition descriptor blocks and process them.
1539 for (block
= vds
[VDS_POS_PARTITION_DESC
].block
;
1540 block
< vds
[VDS_POS_TERMINATING_DESC
].block
;
1542 if (udf_load_partdesc(sb
, block
))
1549 static int udf_load_sequence(struct super_block
*sb
, struct buffer_head
*bh
,
1550 struct kernel_lb_addr
*fileset
)
1552 struct anchorVolDescPtr
*anchor
;
1553 long main_s
, main_e
, reserve_s
, reserve_e
;
1555 anchor
= (struct anchorVolDescPtr
*)bh
->b_data
;
1557 /* Locate the main sequence */
1558 main_s
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLocation
);
1559 main_e
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLength
);
1560 main_e
= main_e
>> sb
->s_blocksize_bits
;
1563 /* Locate the reserve sequence */
1564 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1565 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1566 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1567 reserve_e
+= reserve_s
;
1569 /* Process the main & reserve sequences */
1570 /* responsible for finding the PartitionDesc(s) */
1571 if (!udf_process_sequence(sb
, main_s
, main_e
, fileset
))
1573 return !udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
);
1577 * Check whether there is an anchor block in the given block and
1578 * load Volume Descriptor Sequence if so.
1580 static int udf_check_anchor_block(struct super_block
*sb
, sector_t block
,
1581 struct kernel_lb_addr
*fileset
)
1583 struct buffer_head
*bh
;
1587 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_VARCONV
) &&
1588 udf_fixed_to_variable(block
) >=
1589 sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
)
1592 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1595 if (ident
!= TAG_IDENT_AVDP
) {
1599 ret
= udf_load_sequence(sb
, bh
, fileset
);
1604 /* Search for an anchor volume descriptor pointer */
1605 static sector_t
udf_scan_anchors(struct super_block
*sb
, sector_t lastblock
,
1606 struct kernel_lb_addr
*fileset
)
1610 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1613 /* First try user provided anchor */
1614 if (sbi
->s_anchor
) {
1615 if (udf_check_anchor_block(sb
, sbi
->s_anchor
, fileset
))
1619 * according to spec, anchor is in either:
1623 * however, if the disc isn't closed, it could be 512.
1625 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 256, fileset
))
1628 * The trouble is which block is the last one. Drives often misreport
1629 * this so we try various possibilities.
1631 last
[last_count
++] = lastblock
;
1633 last
[last_count
++] = lastblock
- 1;
1634 last
[last_count
++] = lastblock
+ 1;
1636 last
[last_count
++] = lastblock
- 2;
1637 if (lastblock
>= 150)
1638 last
[last_count
++] = lastblock
- 150;
1639 if (lastblock
>= 152)
1640 last
[last_count
++] = lastblock
- 152;
1642 for (i
= 0; i
< last_count
; i
++) {
1643 if (last
[i
] >= sb
->s_bdev
->bd_inode
->i_size
>>
1644 sb
->s_blocksize_bits
)
1646 if (udf_check_anchor_block(sb
, last
[i
], fileset
))
1650 if (udf_check_anchor_block(sb
, last
[i
] - 256, fileset
))
1654 /* Finally try block 512 in case media is open */
1655 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 512, fileset
))
1661 * Find an anchor volume descriptor and load Volume Descriptor Sequence from
1662 * area specified by it. The function expects sbi->s_lastblock to be the last
1663 * block on the media.
1665 * Return 1 if ok, 0 if not found.
1668 static int udf_find_anchor(struct super_block
*sb
,
1669 struct kernel_lb_addr
*fileset
)
1672 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1674 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1678 /* No anchor found? Try VARCONV conversion of block numbers */
1679 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
1680 /* Firstly, we try to not convert number of the last block */
1681 lastblock
= udf_scan_anchors(sb
,
1682 udf_variable_to_fixed(sbi
->s_last_block
),
1687 /* Secondly, we try with converted number of the last block */
1688 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1690 /* VARCONV didn't help. Clear it. */
1691 UDF_CLEAR_FLAG(sb
, UDF_FLAG_VARCONV
);
1695 sbi
->s_last_block
= lastblock
;
1700 * Check Volume Structure Descriptor, find Anchor block and load Volume
1701 * Descriptor Sequence
1703 static int udf_load_vrs(struct super_block
*sb
, struct udf_options
*uopt
,
1704 int silent
, struct kernel_lb_addr
*fileset
)
1706 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1709 if (!sb_set_blocksize(sb
, uopt
->blocksize
)) {
1711 udf_warn(sb
, "Bad block size\n");
1714 sbi
->s_last_block
= uopt
->lastblock
;
1716 /* Check that it is NSR02 compliant */
1717 nsr_off
= udf_check_vsd(sb
);
1720 udf_warn(sb
, "No VRS found\n");
1724 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1725 if (!sbi
->s_last_block
)
1726 sbi
->s_last_block
= udf_get_last_block(sb
);
1728 udf_debug("Validity check skipped because of novrs option\n");
1731 /* Look for anchor block and load Volume Descriptor Sequence */
1732 sbi
->s_anchor
= uopt
->anchor
;
1733 if (!udf_find_anchor(sb
, fileset
)) {
1735 udf_warn(sb
, "No anchor found\n");
1741 static void udf_open_lvid(struct super_block
*sb
)
1743 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1744 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1745 struct logicalVolIntegrityDesc
*lvid
;
1746 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1751 mutex_lock(&sbi
->s_alloc_mutex
);
1752 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1753 lvidiu
= udf_sb_lvidiu(sbi
);
1755 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1756 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1757 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
,
1759 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN
);
1761 lvid
->descTag
.descCRC
= cpu_to_le16(
1762 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1763 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1765 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1766 mark_buffer_dirty(bh
);
1767 sbi
->s_lvid_dirty
= 0;
1768 mutex_unlock(&sbi
->s_alloc_mutex
);
1771 static void udf_close_lvid(struct super_block
*sb
)
1773 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1774 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1775 struct logicalVolIntegrityDesc
*lvid
;
1776 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1781 mutex_lock(&sbi
->s_alloc_mutex
);
1782 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1783 lvidiu
= udf_sb_lvidiu(sbi
);
1784 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1785 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1786 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
, CURRENT_TIME
);
1787 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(lvidiu
->maxUDFWriteRev
))
1788 lvidiu
->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
1789 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFReadRev
))
1790 lvidiu
->minUDFReadRev
= cpu_to_le16(sbi
->s_udfrev
);
1791 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFWriteRev
))
1792 lvidiu
->minUDFWriteRev
= cpu_to_le16(sbi
->s_udfrev
);
1793 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE
);
1795 lvid
->descTag
.descCRC
= cpu_to_le16(
1796 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1797 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1799 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1801 * We set buffer uptodate unconditionally here to avoid spurious
1802 * warnings from mark_buffer_dirty() when previous EIO has marked
1803 * the buffer as !uptodate
1805 set_buffer_uptodate(bh
);
1806 mark_buffer_dirty(bh
);
1807 sbi
->s_lvid_dirty
= 0;
1808 mutex_unlock(&sbi
->s_alloc_mutex
);
1811 u64
lvid_get_unique_id(struct super_block
*sb
)
1813 struct buffer_head
*bh
;
1814 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1815 struct logicalVolIntegrityDesc
*lvid
;
1816 struct logicalVolHeaderDesc
*lvhd
;
1820 bh
= sbi
->s_lvid_bh
;
1824 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1825 lvhd
= (struct logicalVolHeaderDesc
*)lvid
->logicalVolContentsUse
;
1827 mutex_lock(&sbi
->s_alloc_mutex
);
1828 ret
= uniqueID
= le64_to_cpu(lvhd
->uniqueID
);
1829 if (!(++uniqueID
& 0xFFFFFFFF))
1831 lvhd
->uniqueID
= cpu_to_le64(uniqueID
);
1832 mutex_unlock(&sbi
->s_alloc_mutex
);
1833 mark_buffer_dirty(bh
);
1838 static void udf_sb_free_bitmap(struct udf_bitmap
*bitmap
)
1841 int nr_groups
= bitmap
->s_nr_groups
;
1842 int size
= sizeof(struct udf_bitmap
) + (sizeof(struct buffer_head
*) *
1845 for (i
= 0; i
< nr_groups
; i
++)
1846 if (bitmap
->s_block_bitmap
[i
])
1847 brelse(bitmap
->s_block_bitmap
[i
]);
1849 if (size
<= PAGE_SIZE
)
1855 static void udf_free_partition(struct udf_part_map
*map
)
1858 struct udf_meta_data
*mdata
;
1860 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
)
1861 iput(map
->s_uspace
.s_table
);
1862 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
)
1863 iput(map
->s_fspace
.s_table
);
1864 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
)
1865 udf_sb_free_bitmap(map
->s_uspace
.s_bitmap
);
1866 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
)
1867 udf_sb_free_bitmap(map
->s_fspace
.s_bitmap
);
1868 if (map
->s_partition_type
== UDF_SPARABLE_MAP15
)
1869 for (i
= 0; i
< 4; i
++)
1870 brelse(map
->s_type_specific
.s_sparing
.s_spar_map
[i
]);
1871 else if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
1872 mdata
= &map
->s_type_specific
.s_metadata
;
1873 iput(mdata
->s_metadata_fe
);
1874 mdata
->s_metadata_fe
= NULL
;
1876 iput(mdata
->s_mirror_fe
);
1877 mdata
->s_mirror_fe
= NULL
;
1879 iput(mdata
->s_bitmap_fe
);
1880 mdata
->s_bitmap_fe
= NULL
;
1884 static int udf_fill_super(struct super_block
*sb
, void *options
, int silent
)
1888 struct inode
*inode
= NULL
;
1889 struct udf_options uopt
;
1890 struct kernel_lb_addr rootdir
, fileset
;
1891 struct udf_sb_info
*sbi
;
1893 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
) | (1 << UDF_FLAG_STRICT
);
1897 uopt
.fmode
= UDF_INVALID_MODE
;
1898 uopt
.dmode
= UDF_INVALID_MODE
;
1900 sbi
= kzalloc(sizeof(struct udf_sb_info
), GFP_KERNEL
);
1904 sb
->s_fs_info
= sbi
;
1906 mutex_init(&sbi
->s_alloc_mutex
);
1908 if (!udf_parse_options((char *)options
, &uopt
, false))
1911 if (uopt
.flags
& (1 << UDF_FLAG_UTF8
) &&
1912 uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) {
1913 udf_err(sb
, "utf8 cannot be combined with iocharset\n");
1916 #ifdef CONFIG_UDF_NLS
1917 if ((uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) && !uopt
.nls_map
) {
1918 uopt
.nls_map
= load_nls_default();
1920 uopt
.flags
&= ~(1 << UDF_FLAG_NLS_MAP
);
1922 udf_debug("Using default NLS map\n");
1925 if (!(uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)))
1926 uopt
.flags
|= (1 << UDF_FLAG_UTF8
);
1928 fileset
.logicalBlockNum
= 0xFFFFFFFF;
1929 fileset
.partitionReferenceNum
= 0xFFFF;
1931 sbi
->s_flags
= uopt
.flags
;
1932 sbi
->s_uid
= uopt
.uid
;
1933 sbi
->s_gid
= uopt
.gid
;
1934 sbi
->s_umask
= uopt
.umask
;
1935 sbi
->s_fmode
= uopt
.fmode
;
1936 sbi
->s_dmode
= uopt
.dmode
;
1937 sbi
->s_nls_map
= uopt
.nls_map
;
1938 rwlock_init(&sbi
->s_cred_lock
);
1940 if (uopt
.session
== 0xFFFFFFFF)
1941 sbi
->s_session
= udf_get_last_session(sb
);
1943 sbi
->s_session
= uopt
.session
;
1945 udf_debug("Multi-session=%d\n", sbi
->s_session
);
1947 /* Fill in the rest of the superblock */
1948 sb
->s_op
= &udf_sb_ops
;
1949 sb
->s_export_op
= &udf_export_ops
;
1952 sb
->s_magic
= UDF_SUPER_MAGIC
;
1953 sb
->s_time_gran
= 1000;
1955 if (uopt
.flags
& (1 << UDF_FLAG_BLOCKSIZE_SET
)) {
1956 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
1958 uopt
.blocksize
= bdev_logical_block_size(sb
->s_bdev
);
1959 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
1960 if (!ret
&& uopt
.blocksize
!= UDF_DEFAULT_BLOCKSIZE
) {
1962 pr_notice("Rescanning with blocksize %d\n",
1963 UDF_DEFAULT_BLOCKSIZE
);
1964 uopt
.blocksize
= UDF_DEFAULT_BLOCKSIZE
;
1965 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
1969 udf_warn(sb
, "No partition found (1)\n");
1973 udf_debug("Lastblock=%d\n", sbi
->s_last_block
);
1975 if (sbi
->s_lvid_bh
) {
1976 struct logicalVolIntegrityDescImpUse
*lvidiu
=
1978 uint16_t minUDFReadRev
= le16_to_cpu(lvidiu
->minUDFReadRev
);
1979 uint16_t minUDFWriteRev
= le16_to_cpu(lvidiu
->minUDFWriteRev
);
1980 /* uint16_t maxUDFWriteRev =
1981 le16_to_cpu(lvidiu->maxUDFWriteRev); */
1983 if (minUDFReadRev
> UDF_MAX_READ_VERSION
) {
1984 udf_err(sb
, "minUDFReadRev=%x (max is %x)\n",
1985 le16_to_cpu(lvidiu
->minUDFReadRev
),
1986 UDF_MAX_READ_VERSION
);
1988 } else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
)
1989 sb
->s_flags
|= MS_RDONLY
;
1991 sbi
->s_udfrev
= minUDFWriteRev
;
1993 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
1994 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
1995 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
1996 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
1999 if (!sbi
->s_partitions
) {
2000 udf_warn(sb
, "No partition found (2)\n");
2004 if (sbi
->s_partmaps
[sbi
->s_partition
].s_partition_flags
&
2005 UDF_PART_FLAG_READ_ONLY
) {
2006 pr_notice("Partition marked readonly; forcing readonly mount\n");
2007 sb
->s_flags
|= MS_RDONLY
;
2010 if (udf_find_fileset(sb
, &fileset
, &rootdir
)) {
2011 udf_warn(sb
, "No fileset found\n");
2016 struct timestamp ts
;
2017 udf_time_to_disk_stamp(&ts
, sbi
->s_record_time
);
2018 udf_info("Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
2019 sbi
->s_volume_ident
,
2020 le16_to_cpu(ts
.year
), ts
.month
, ts
.day
,
2021 ts
.hour
, ts
.minute
, le16_to_cpu(ts
.typeAndTimezone
));
2023 if (!(sb
->s_flags
& MS_RDONLY
))
2026 /* Assign the root inode */
2027 /* assign inodes by physical block number */
2028 /* perhaps it's not extensible enough, but for now ... */
2029 inode
= udf_iget(sb
, &rootdir
);
2031 udf_err(sb
, "Error in udf_iget, block=%d, partition=%d\n",
2032 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
2036 /* Allocate a dentry for the root inode */
2037 sb
->s_root
= d_make_root(inode
);
2039 udf_err(sb
, "Couldn't allocate root dentry\n");
2042 sb
->s_maxbytes
= MAX_LFS_FILESIZE
;
2043 sb
->s_max_links
= UDF_MAX_LINKS
;
2047 if (sbi
->s_vat_inode
)
2048 iput(sbi
->s_vat_inode
);
2049 if (sbi
->s_partitions
)
2050 for (i
= 0; i
< sbi
->s_partitions
; i
++)
2051 udf_free_partition(&sbi
->s_partmaps
[i
]);
2052 #ifdef CONFIG_UDF_NLS
2053 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2054 unload_nls(sbi
->s_nls_map
);
2056 if (!(sb
->s_flags
& MS_RDONLY
))
2058 brelse(sbi
->s_lvid_bh
);
2060 kfree(sbi
->s_partmaps
);
2062 sb
->s_fs_info
= NULL
;
2067 void _udf_err(struct super_block
*sb
, const char *function
,
2068 const char *fmt
, ...)
2070 struct va_format vaf
;
2074 if (!(sb
->s_flags
& MS_RDONLY
))
2077 va_start(args
, fmt
);
2082 pr_err("error (device %s): %s: %pV", sb
->s_id
, function
, &vaf
);
2087 void _udf_warn(struct super_block
*sb
, const char *function
,
2088 const char *fmt
, ...)
2090 struct va_format vaf
;
2093 va_start(args
, fmt
);
2098 pr_warn("warning (device %s): %s: %pV", sb
->s_id
, function
, &vaf
);
2103 static void udf_put_super(struct super_block
*sb
)
2106 struct udf_sb_info
*sbi
;
2110 if (sbi
->s_vat_inode
)
2111 iput(sbi
->s_vat_inode
);
2112 if (sbi
->s_partitions
)
2113 for (i
= 0; i
< sbi
->s_partitions
; i
++)
2114 udf_free_partition(&sbi
->s_partmaps
[i
]);
2115 #ifdef CONFIG_UDF_NLS
2116 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2117 unload_nls(sbi
->s_nls_map
);
2119 if (!(sb
->s_flags
& MS_RDONLY
))
2121 brelse(sbi
->s_lvid_bh
);
2122 kfree(sbi
->s_partmaps
);
2123 kfree(sb
->s_fs_info
);
2124 sb
->s_fs_info
= NULL
;
2127 static int udf_sync_fs(struct super_block
*sb
, int wait
)
2129 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2131 mutex_lock(&sbi
->s_alloc_mutex
);
2132 if (sbi
->s_lvid_dirty
) {
2134 * Blockdevice will be synced later so we don't have to submit
2137 mark_buffer_dirty(sbi
->s_lvid_bh
);
2139 sbi
->s_lvid_dirty
= 0;
2141 mutex_unlock(&sbi
->s_alloc_mutex
);
2146 static int udf_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
2148 struct super_block
*sb
= dentry
->d_sb
;
2149 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2150 struct logicalVolIntegrityDescImpUse
*lvidiu
;
2151 u64 id
= huge_encode_dev(sb
->s_bdev
->bd_dev
);
2153 if (sbi
->s_lvid_bh
!= NULL
)
2154 lvidiu
= udf_sb_lvidiu(sbi
);
2158 buf
->f_type
= UDF_SUPER_MAGIC
;
2159 buf
->f_bsize
= sb
->s_blocksize
;
2160 buf
->f_blocks
= sbi
->s_partmaps
[sbi
->s_partition
].s_partition_len
;
2161 buf
->f_bfree
= udf_count_free(sb
);
2162 buf
->f_bavail
= buf
->f_bfree
;
2163 buf
->f_files
= (lvidiu
!= NULL
? (le32_to_cpu(lvidiu
->numFiles
) +
2164 le32_to_cpu(lvidiu
->numDirs
)) : 0)
2166 buf
->f_ffree
= buf
->f_bfree
;
2167 buf
->f_namelen
= UDF_NAME_LEN
- 2;
2168 buf
->f_fsid
.val
[0] = (u32
)id
;
2169 buf
->f_fsid
.val
[1] = (u32
)(id
>> 32);
2174 static unsigned int udf_count_free_bitmap(struct super_block
*sb
,
2175 struct udf_bitmap
*bitmap
)
2177 struct buffer_head
*bh
= NULL
;
2178 unsigned int accum
= 0;
2180 int block
= 0, newblock
;
2181 struct kernel_lb_addr loc
;
2185 struct spaceBitmapDesc
*bm
;
2187 loc
.logicalBlockNum
= bitmap
->s_extPosition
;
2188 loc
.partitionReferenceNum
= UDF_SB(sb
)->s_partition
;
2189 bh
= udf_read_ptagged(sb
, &loc
, 0, &ident
);
2192 udf_err(sb
, "udf_count_free failed\n");
2194 } else if (ident
!= TAG_IDENT_SBD
) {
2196 udf_err(sb
, "udf_count_free failed\n");
2200 bm
= (struct spaceBitmapDesc
*)bh
->b_data
;
2201 bytes
= le32_to_cpu(bm
->numOfBytes
);
2202 index
= sizeof(struct spaceBitmapDesc
); /* offset in first block only */
2203 ptr
= (uint8_t *)bh
->b_data
;
2206 u32 cur_bytes
= min_t(u32
, bytes
, sb
->s_blocksize
- index
);
2207 accum
+= bitmap_weight((const unsigned long *)(ptr
+ index
),
2212 newblock
= udf_get_lb_pblock(sb
, &loc
, ++block
);
2213 bh
= udf_tread(sb
, newblock
);
2215 udf_debug("read failed\n");
2219 ptr
= (uint8_t *)bh
->b_data
;
2227 static unsigned int udf_count_free_table(struct super_block
*sb
,
2228 struct inode
*table
)
2230 unsigned int accum
= 0;
2232 struct kernel_lb_addr eloc
;
2234 struct extent_position epos
;
2236 mutex_lock(&UDF_SB(sb
)->s_alloc_mutex
);
2237 epos
.block
= UDF_I(table
)->i_location
;
2238 epos
.offset
= sizeof(struct unallocSpaceEntry
);
2241 while ((etype
= udf_next_aext(table
, &epos
, &eloc
, &elen
, 1)) != -1)
2242 accum
+= (elen
>> table
->i_sb
->s_blocksize_bits
);
2245 mutex_unlock(&UDF_SB(sb
)->s_alloc_mutex
);
2250 static unsigned int udf_count_free(struct super_block
*sb
)
2252 unsigned int accum
= 0;
2253 struct udf_sb_info
*sbi
;
2254 struct udf_part_map
*map
;
2257 if (sbi
->s_lvid_bh
) {
2258 struct logicalVolIntegrityDesc
*lvid
=
2259 (struct logicalVolIntegrityDesc
*)
2260 sbi
->s_lvid_bh
->b_data
;
2261 if (le32_to_cpu(lvid
->numOfPartitions
) > sbi
->s_partition
) {
2262 accum
= le32_to_cpu(
2263 lvid
->freeSpaceTable
[sbi
->s_partition
]);
2264 if (accum
== 0xFFFFFFFF)
2272 map
= &sbi
->s_partmaps
[sbi
->s_partition
];
2273 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
) {
2274 accum
+= udf_count_free_bitmap(sb
,
2275 map
->s_uspace
.s_bitmap
);
2277 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
) {
2278 accum
+= udf_count_free_bitmap(sb
,
2279 map
->s_fspace
.s_bitmap
);
2284 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
) {
2285 accum
+= udf_count_free_table(sb
,
2286 map
->s_uspace
.s_table
);
2288 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
) {
2289 accum
+= udf_count_free_table(sb
,
2290 map
->s_fspace
.s_table
);