5 * Super block routines for the OSTA-UDF(tm) filesystem.
8 * OSTA-UDF(tm) = Optical Storage Technology Association
9 * Universal Disk Format.
11 * This code is based on version 2.00 of the UDF specification,
12 * and revision 3 of the ECMA 167 standard [equivalent to ISO 13346].
13 * http://www.osta.org/
18 * This file is distributed under the terms of the GNU General Public
19 * License (GPL). Copies of the GPL can be obtained from:
20 * ftp://prep.ai.mit.edu/pub/gnu/GPL
21 * Each contributing author retains all rights to their own work.
23 * (C) 1998 Dave Boynton
24 * (C) 1998-2004 Ben Fennema
25 * (C) 2000 Stelias Computing Inc
29 * 09/24/98 dgb changed to allow compiling outside of kernel, and
30 * added some debugging.
31 * 10/01/98 dgb updated to allow (some) possibility of compiling w/2.0.34
32 * 10/16/98 attempting some multi-session support
33 * 10/17/98 added freespace count for "df"
34 * 11/11/98 gr added novrs option
35 * 11/26/98 dgb added fileset,anchor mount options
36 * 12/06/98 blf really hosed things royally. vat/sparing support. sequenced
37 * vol descs. rewrote option handling based on isofs
38 * 12/20/98 find the free space bitmap (if it exists)
43 #include <linux/blkdev.h>
44 #include <linux/slab.h>
45 #include <linux/kernel.h>
46 #include <linux/module.h>
47 #include <linux/parser.h>
48 #include <linux/stat.h>
49 #include <linux/cdrom.h>
50 #include <linux/nls.h>
51 #include <linux/smp_lock.h>
52 #include <linux/buffer_head.h>
53 #include <linux/vfs.h>
54 #include <linux/vmalloc.h>
55 #include <linux/errno.h>
56 #include <linux/mount.h>
57 #include <linux/seq_file.h>
58 #include <linux/bitmap.h>
59 #include <linux/crc-itu-t.h>
60 #include <asm/byteorder.h>
65 #include <linux/init.h>
66 #include <asm/uaccess.h>
68 #define VDS_POS_PRIMARY_VOL_DESC 0
69 #define VDS_POS_UNALLOC_SPACE_DESC 1
70 #define VDS_POS_LOGICAL_VOL_DESC 2
71 #define VDS_POS_PARTITION_DESC 3
72 #define VDS_POS_IMP_USE_VOL_DESC 4
73 #define VDS_POS_VOL_DESC_PTR 5
74 #define VDS_POS_TERMINATING_DESC 6
75 #define VDS_POS_LENGTH 7
77 #define UDF_DEFAULT_BLOCKSIZE 2048
79 static char error_buf
[1024];
81 /* These are the "meat" - everything else is stuffing */
82 static int udf_fill_super(struct super_block
*, void *, int);
83 static void udf_put_super(struct super_block
*);
84 static int udf_sync_fs(struct super_block
*, int);
85 static int udf_remount_fs(struct super_block
*, int *, char *);
86 static void udf_load_logicalvolint(struct super_block
*, struct kernel_extent_ad
);
87 static int udf_find_fileset(struct super_block
*, struct kernel_lb_addr
*,
88 struct kernel_lb_addr
*);
89 static void udf_load_fileset(struct super_block
*, struct buffer_head
*,
90 struct kernel_lb_addr
*);
91 static void udf_open_lvid(struct super_block
*);
92 static void udf_close_lvid(struct super_block
*);
93 static unsigned int udf_count_free(struct super_block
*);
94 static int udf_statfs(struct dentry
*, struct kstatfs
*);
95 static int udf_show_options(struct seq_file
*, struct vfsmount
*);
96 static void udf_error(struct super_block
*sb
, const char *function
,
97 const char *fmt
, ...);
99 struct logicalVolIntegrityDescImpUse
*udf_sb_lvidiu(struct udf_sb_info
*sbi
)
101 struct logicalVolIntegrityDesc
*lvid
=
102 (struct logicalVolIntegrityDesc
*)sbi
->s_lvid_bh
->b_data
;
103 __u32 number_of_partitions
= le32_to_cpu(lvid
->numOfPartitions
);
104 __u32 offset
= number_of_partitions
* 2 *
105 sizeof(uint32_t)/sizeof(uint8_t);
106 return (struct logicalVolIntegrityDescImpUse
*)&(lvid
->impUse
[offset
]);
109 /* UDF filesystem type */
110 static struct dentry
*udf_mount(struct file_system_type
*fs_type
,
111 int flags
, const char *dev_name
, void *data
)
113 return mount_bdev(fs_type
, flags
, dev_name
, data
, udf_fill_super
);
116 static struct file_system_type udf_fstype
= {
117 .owner
= THIS_MODULE
,
120 .kill_sb
= kill_block_super
,
121 .fs_flags
= FS_REQUIRES_DEV
,
124 static struct kmem_cache
*udf_inode_cachep
;
126 static struct inode
*udf_alloc_inode(struct super_block
*sb
)
128 struct udf_inode_info
*ei
;
129 ei
= kmem_cache_alloc(udf_inode_cachep
, GFP_KERNEL
);
134 ei
->i_lenExtents
= 0;
135 ei
->i_next_alloc_block
= 0;
136 ei
->i_next_alloc_goal
= 0;
139 return &ei
->vfs_inode
;
142 static void udf_destroy_inode(struct inode
*inode
)
144 kmem_cache_free(udf_inode_cachep
, UDF_I(inode
));
147 static void init_once(void *foo
)
149 struct udf_inode_info
*ei
= (struct udf_inode_info
*)foo
;
151 ei
->i_ext
.i_data
= NULL
;
152 inode_init_once(&ei
->vfs_inode
);
155 static int init_inodecache(void)
157 udf_inode_cachep
= kmem_cache_create("udf_inode_cache",
158 sizeof(struct udf_inode_info
),
159 0, (SLAB_RECLAIM_ACCOUNT
|
162 if (!udf_inode_cachep
)
167 static void destroy_inodecache(void)
169 kmem_cache_destroy(udf_inode_cachep
);
172 /* Superblock operations */
173 static const struct super_operations udf_sb_ops
= {
174 .alloc_inode
= udf_alloc_inode
,
175 .destroy_inode
= udf_destroy_inode
,
176 .write_inode
= udf_write_inode
,
177 .evict_inode
= udf_evict_inode
,
178 .put_super
= udf_put_super
,
179 .sync_fs
= udf_sync_fs
,
180 .statfs
= udf_statfs
,
181 .remount_fs
= udf_remount_fs
,
182 .show_options
= udf_show_options
,
187 unsigned int blocksize
;
188 unsigned int session
;
189 unsigned int lastblock
;
192 unsigned short partition
;
193 unsigned int fileset
;
194 unsigned int rootdir
;
201 struct nls_table
*nls_map
;
204 static int __init
init_udf_fs(void)
208 err
= init_inodecache();
211 err
= register_filesystem(&udf_fstype
);
218 destroy_inodecache();
224 static void __exit
exit_udf_fs(void)
226 unregister_filesystem(&udf_fstype
);
227 destroy_inodecache();
230 module_init(init_udf_fs
)
231 module_exit(exit_udf_fs
)
233 static int udf_sb_alloc_partition_maps(struct super_block
*sb
, u32 count
)
235 struct udf_sb_info
*sbi
= UDF_SB(sb
);
237 sbi
->s_partmaps
= kcalloc(count
, sizeof(struct udf_part_map
),
239 if (!sbi
->s_partmaps
) {
240 udf_error(sb
, __func__
,
241 "Unable to allocate space for %d partition maps",
243 sbi
->s_partitions
= 0;
247 sbi
->s_partitions
= count
;
251 static int udf_show_options(struct seq_file
*seq
, struct vfsmount
*mnt
)
253 struct super_block
*sb
= mnt
->mnt_sb
;
254 struct udf_sb_info
*sbi
= UDF_SB(sb
);
256 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_STRICT
))
257 seq_puts(seq
, ",nostrict");
258 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_BLOCKSIZE_SET
))
259 seq_printf(seq
, ",bs=%lu", sb
->s_blocksize
);
260 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNHIDE
))
261 seq_puts(seq
, ",unhide");
262 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UNDELETE
))
263 seq_puts(seq
, ",undelete");
264 if (!UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_AD_IN_ICB
))
265 seq_puts(seq
, ",noadinicb");
266 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_USE_SHORT_AD
))
267 seq_puts(seq
, ",shortad");
268 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_FORGET
))
269 seq_puts(seq
, ",uid=forget");
270 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_IGNORE
))
271 seq_puts(seq
, ",uid=ignore");
272 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_FORGET
))
273 seq_puts(seq
, ",gid=forget");
274 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_IGNORE
))
275 seq_puts(seq
, ",gid=ignore");
276 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UID_SET
))
277 seq_printf(seq
, ",uid=%u", sbi
->s_uid
);
278 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_GID_SET
))
279 seq_printf(seq
, ",gid=%u", sbi
->s_gid
);
280 if (sbi
->s_umask
!= 0)
281 seq_printf(seq
, ",umask=%o", sbi
->s_umask
);
282 if (sbi
->s_fmode
!= UDF_INVALID_MODE
)
283 seq_printf(seq
, ",mode=%o", sbi
->s_fmode
);
284 if (sbi
->s_dmode
!= UDF_INVALID_MODE
)
285 seq_printf(seq
, ",dmode=%o", sbi
->s_dmode
);
286 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_SESSION_SET
))
287 seq_printf(seq
, ",session=%u", sbi
->s_session
);
288 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_LASTBLOCK_SET
))
289 seq_printf(seq
, ",lastblock=%u", sbi
->s_last_block
);
290 if (sbi
->s_anchor
!= 0)
291 seq_printf(seq
, ",anchor=%u", sbi
->s_anchor
);
293 * volume, partition, fileset and rootdir seem to be ignored
296 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_UTF8
))
297 seq_puts(seq
, ",utf8");
298 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
) && sbi
->s_nls_map
)
299 seq_printf(seq
, ",iocharset=%s", sbi
->s_nls_map
->charset
);
308 * Parse mount options.
311 * The following mount options are supported:
313 * gid= Set the default group.
314 * umask= Set the default umask.
315 * mode= Set the default file permissions.
316 * dmode= Set the default directory permissions.
317 * uid= Set the default user.
318 * bs= Set the block size.
319 * unhide Show otherwise hidden files.
320 * undelete Show deleted files in lists.
321 * adinicb Embed data in the inode (default)
322 * noadinicb Don't embed data in the inode
323 * shortad Use short ad's
324 * longad Use long ad's (default)
325 * nostrict Unset strict conformance
326 * iocharset= Set the NLS character set
328 * The remaining are for debugging and disaster recovery:
330 * novrs Skip volume sequence recognition
332 * The following expect a offset from 0.
334 * session= Set the CDROM session (default= last session)
335 * anchor= Override standard anchor location. (default= 256)
336 * volume= Override the VolumeDesc location. (unused)
337 * partition= Override the PartitionDesc location. (unused)
338 * lastblock= Set the last block of the filesystem/
340 * The following expect a offset from the partition root.
342 * fileset= Override the fileset block location. (unused)
343 * rootdir= Override the root directory location. (unused)
344 * WARNING: overriding the rootdir to a non-directory may
345 * yield highly unpredictable results.
348 * options Pointer to mount options string.
349 * uopts Pointer to mount options variable.
352 * <return> 1 Mount options parsed okay.
353 * <return> 0 Error parsing mount options.
356 * July 1, 1997 - Andrew E. Mileski
357 * Written, tested, and released.
361 Opt_novrs
, Opt_nostrict
, Opt_bs
, Opt_unhide
, Opt_undelete
,
362 Opt_noadinicb
, Opt_adinicb
, Opt_shortad
, Opt_longad
,
363 Opt_gid
, Opt_uid
, Opt_umask
, Opt_session
, Opt_lastblock
,
364 Opt_anchor
, Opt_volume
, Opt_partition
, Opt_fileset
,
365 Opt_rootdir
, Opt_utf8
, Opt_iocharset
,
366 Opt_err
, Opt_uforget
, Opt_uignore
, Opt_gforget
, Opt_gignore
,
370 static const match_table_t tokens
= {
371 {Opt_novrs
, "novrs"},
372 {Opt_nostrict
, "nostrict"},
374 {Opt_unhide
, "unhide"},
375 {Opt_undelete
, "undelete"},
376 {Opt_noadinicb
, "noadinicb"},
377 {Opt_adinicb
, "adinicb"},
378 {Opt_shortad
, "shortad"},
379 {Opt_longad
, "longad"},
380 {Opt_uforget
, "uid=forget"},
381 {Opt_uignore
, "uid=ignore"},
382 {Opt_gforget
, "gid=forget"},
383 {Opt_gignore
, "gid=ignore"},
386 {Opt_umask
, "umask=%o"},
387 {Opt_session
, "session=%u"},
388 {Opt_lastblock
, "lastblock=%u"},
389 {Opt_anchor
, "anchor=%u"},
390 {Opt_volume
, "volume=%u"},
391 {Opt_partition
, "partition=%u"},
392 {Opt_fileset
, "fileset=%u"},
393 {Opt_rootdir
, "rootdir=%u"},
395 {Opt_iocharset
, "iocharset=%s"},
396 {Opt_fmode
, "mode=%o"},
397 {Opt_dmode
, "dmode=%o"},
401 static int udf_parse_options(char *options
, struct udf_options
*uopt
,
408 uopt
->partition
= 0xFFFF;
409 uopt
->session
= 0xFFFFFFFF;
412 uopt
->volume
= 0xFFFFFFFF;
413 uopt
->rootdir
= 0xFFFFFFFF;
414 uopt
->fileset
= 0xFFFFFFFF;
415 uopt
->nls_map
= NULL
;
420 while ((p
= strsep(&options
, ",")) != NULL
) {
421 substring_t args
[MAX_OPT_ARGS
];
426 token
= match_token(p
, tokens
, args
);
432 if (match_int(&args
[0], &option
))
434 uopt
->blocksize
= option
;
435 uopt
->flags
|= (1 << UDF_FLAG_BLOCKSIZE_SET
);
438 uopt
->flags
|= (1 << UDF_FLAG_UNHIDE
);
441 uopt
->flags
|= (1 << UDF_FLAG_UNDELETE
);
444 uopt
->flags
&= ~(1 << UDF_FLAG_USE_AD_IN_ICB
);
447 uopt
->flags
|= (1 << UDF_FLAG_USE_AD_IN_ICB
);
450 uopt
->flags
|= (1 << UDF_FLAG_USE_SHORT_AD
);
453 uopt
->flags
&= ~(1 << UDF_FLAG_USE_SHORT_AD
);
456 if (match_int(args
, &option
))
459 uopt
->flags
|= (1 << UDF_FLAG_GID_SET
);
462 if (match_int(args
, &option
))
465 uopt
->flags
|= (1 << UDF_FLAG_UID_SET
);
468 if (match_octal(args
, &option
))
470 uopt
->umask
= option
;
473 uopt
->flags
&= ~(1 << UDF_FLAG_STRICT
);
476 if (match_int(args
, &option
))
478 uopt
->session
= option
;
480 uopt
->flags
|= (1 << UDF_FLAG_SESSION_SET
);
483 if (match_int(args
, &option
))
485 uopt
->lastblock
= option
;
487 uopt
->flags
|= (1 << UDF_FLAG_LASTBLOCK_SET
);
490 if (match_int(args
, &option
))
492 uopt
->anchor
= option
;
495 if (match_int(args
, &option
))
497 uopt
->volume
= option
;
500 if (match_int(args
, &option
))
502 uopt
->partition
= option
;
505 if (match_int(args
, &option
))
507 uopt
->fileset
= option
;
510 if (match_int(args
, &option
))
512 uopt
->rootdir
= option
;
515 uopt
->flags
|= (1 << UDF_FLAG_UTF8
);
517 #ifdef CONFIG_UDF_NLS
519 uopt
->nls_map
= load_nls(args
[0].from
);
520 uopt
->flags
|= (1 << UDF_FLAG_NLS_MAP
);
524 uopt
->flags
|= (1 << UDF_FLAG_UID_IGNORE
);
527 uopt
->flags
|= (1 << UDF_FLAG_UID_FORGET
);
530 uopt
->flags
|= (1 << UDF_FLAG_GID_IGNORE
);
533 uopt
->flags
|= (1 << UDF_FLAG_GID_FORGET
);
536 if (match_octal(args
, &option
))
538 uopt
->fmode
= option
& 0777;
541 if (match_octal(args
, &option
))
543 uopt
->dmode
= option
& 0777;
546 printk(KERN_ERR
"udf: bad mount option \"%s\" "
547 "or missing value\n", p
);
554 static int udf_remount_fs(struct super_block
*sb
, int *flags
, char *options
)
556 struct udf_options uopt
;
557 struct udf_sb_info
*sbi
= UDF_SB(sb
);
560 uopt
.flags
= sbi
->s_flags
;
561 uopt
.uid
= sbi
->s_uid
;
562 uopt
.gid
= sbi
->s_gid
;
563 uopt
.umask
= sbi
->s_umask
;
564 uopt
.fmode
= sbi
->s_fmode
;
565 uopt
.dmode
= sbi
->s_dmode
;
567 if (!udf_parse_options(options
, &uopt
, true))
571 sbi
->s_flags
= uopt
.flags
;
572 sbi
->s_uid
= uopt
.uid
;
573 sbi
->s_gid
= uopt
.gid
;
574 sbi
->s_umask
= uopt
.umask
;
575 sbi
->s_fmode
= uopt
.fmode
;
576 sbi
->s_dmode
= uopt
.dmode
;
578 if (sbi
->s_lvid_bh
) {
579 int write_rev
= le16_to_cpu(udf_sb_lvidiu(sbi
)->minUDFWriteRev
);
580 if (write_rev
> UDF_MAX_WRITE_VERSION
)
584 if ((*flags
& MS_RDONLY
) == (sb
->s_flags
& MS_RDONLY
))
587 if (*flags
& MS_RDONLY
)
597 /* Check Volume Structure Descriptors (ECMA 167 2/9.1) */
598 /* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
599 static loff_t
udf_check_vsd(struct super_block
*sb
)
601 struct volStructDesc
*vsd
= NULL
;
602 loff_t sector
= 32768;
604 struct buffer_head
*bh
= NULL
;
607 struct udf_sb_info
*sbi
;
610 if (sb
->s_blocksize
< sizeof(struct volStructDesc
))
611 sectorsize
= sizeof(struct volStructDesc
);
613 sectorsize
= sb
->s_blocksize
;
615 sector
+= (sbi
->s_session
<< sb
->s_blocksize_bits
);
617 udf_debug("Starting at sector %u (%ld byte sectors)\n",
618 (unsigned int)(sector
>> sb
->s_blocksize_bits
),
620 /* Process the sequence (if applicable) */
621 for (; !nsr02
&& !nsr03
; sector
+= sectorsize
) {
623 bh
= udf_tread(sb
, sector
>> sb
->s_blocksize_bits
);
627 /* Look for ISO descriptors */
628 vsd
= (struct volStructDesc
*)(bh
->b_data
+
629 (sector
& (sb
->s_blocksize
- 1)));
631 if (vsd
->stdIdent
[0] == 0) {
634 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_CD001
,
636 switch (vsd
->structType
) {
638 udf_debug("ISO9660 Boot Record found\n");
641 udf_debug("ISO9660 Primary Volume Descriptor "
645 udf_debug("ISO9660 Supplementary Volume "
646 "Descriptor found\n");
649 udf_debug("ISO9660 Volume Partition Descriptor "
653 udf_debug("ISO9660 Volume Descriptor Set "
654 "Terminator found\n");
657 udf_debug("ISO9660 VRS (%u) found\n",
661 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_BEA01
,
664 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_TEA01
,
668 } else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR02
,
671 else if (!strncmp(vsd
->stdIdent
, VSD_STD_ID_NSR03
,
681 else if (sector
- (sbi
->s_session
<< sb
->s_blocksize_bits
) == 32768)
687 static int udf_find_fileset(struct super_block
*sb
,
688 struct kernel_lb_addr
*fileset
,
689 struct kernel_lb_addr
*root
)
691 struct buffer_head
*bh
= NULL
;
694 struct udf_sb_info
*sbi
;
696 if (fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
697 fileset
->partitionReferenceNum
!= 0xFFFF) {
698 bh
= udf_read_ptagged(sb
, fileset
, 0, &ident
);
702 } else if (ident
!= TAG_IDENT_FSD
) {
711 /* Search backwards through the partitions */
712 struct kernel_lb_addr newfileset
;
714 /* --> cvg: FIXME - is it reasonable? */
717 for (newfileset
.partitionReferenceNum
= sbi
->s_partitions
- 1;
718 (newfileset
.partitionReferenceNum
!= 0xFFFF &&
719 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
720 fileset
->partitionReferenceNum
== 0xFFFF);
721 newfileset
.partitionReferenceNum
--) {
722 lastblock
= sbi
->s_partmaps
723 [newfileset
.partitionReferenceNum
]
725 newfileset
.logicalBlockNum
= 0;
728 bh
= udf_read_ptagged(sb
, &newfileset
, 0,
731 newfileset
.logicalBlockNum
++;
738 struct spaceBitmapDesc
*sp
;
739 sp
= (struct spaceBitmapDesc
*)
741 newfileset
.logicalBlockNum
+= 1 +
742 ((le32_to_cpu(sp
->numOfBytes
) +
743 sizeof(struct spaceBitmapDesc
)
744 - 1) >> sb
->s_blocksize_bits
);
749 *fileset
= newfileset
;
752 newfileset
.logicalBlockNum
++;
757 } while (newfileset
.logicalBlockNum
< lastblock
&&
758 fileset
->logicalBlockNum
== 0xFFFFFFFF &&
759 fileset
->partitionReferenceNum
== 0xFFFF);
763 if ((fileset
->logicalBlockNum
!= 0xFFFFFFFF ||
764 fileset
->partitionReferenceNum
!= 0xFFFF) && bh
) {
765 udf_debug("Fileset at block=%d, partition=%d\n",
766 fileset
->logicalBlockNum
,
767 fileset
->partitionReferenceNum
);
769 sbi
->s_partition
= fileset
->partitionReferenceNum
;
770 udf_load_fileset(sb
, bh
, root
);
777 static int udf_load_pvoldesc(struct super_block
*sb
, sector_t block
)
779 struct primaryVolDesc
*pvoldesc
;
780 struct ustr
*instr
, *outstr
;
781 struct buffer_head
*bh
;
785 instr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
789 outstr
= kmalloc(sizeof(struct ustr
), GFP_NOFS
);
793 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
797 BUG_ON(ident
!= TAG_IDENT_PVD
);
799 pvoldesc
= (struct primaryVolDesc
*)bh
->b_data
;
801 if (udf_disk_stamp_to_time(&UDF_SB(sb
)->s_record_time
,
802 pvoldesc
->recordingDateAndTime
)) {
804 struct timestamp
*ts
= &pvoldesc
->recordingDateAndTime
;
805 udf_debug("recording time %04u/%02u/%02u"
807 le16_to_cpu(ts
->year
), ts
->month
, ts
->day
, ts
->hour
,
808 ts
->minute
, le16_to_cpu(ts
->typeAndTimezone
));
812 if (!udf_build_ustr(instr
, pvoldesc
->volIdent
, 32))
813 if (udf_CS0toUTF8(outstr
, instr
)) {
814 strncpy(UDF_SB(sb
)->s_volume_ident
, outstr
->u_name
,
815 outstr
->u_len
> 31 ? 31 : outstr
->u_len
);
816 udf_debug("volIdent[] = '%s'\n",
817 UDF_SB(sb
)->s_volume_ident
);
820 if (!udf_build_ustr(instr
, pvoldesc
->volSetIdent
, 128))
821 if (udf_CS0toUTF8(outstr
, instr
))
822 udf_debug("volSetIdent[] = '%s'\n", outstr
->u_name
);
833 static int udf_load_metadata_files(struct super_block
*sb
, int partition
)
835 struct udf_sb_info
*sbi
= UDF_SB(sb
);
836 struct udf_part_map
*map
;
837 struct udf_meta_data
*mdata
;
838 struct kernel_lb_addr addr
;
841 map
= &sbi
->s_partmaps
[partition
];
842 mdata
= &map
->s_type_specific
.s_metadata
;
844 /* metadata address */
845 addr
.logicalBlockNum
= mdata
->s_meta_file_loc
;
846 addr
.partitionReferenceNum
= map
->s_partition_num
;
848 udf_debug("Metadata file location: block = %d part = %d\n",
849 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
851 mdata
->s_metadata_fe
= udf_iget(sb
, &addr
);
853 if (mdata
->s_metadata_fe
== NULL
) {
854 udf_warning(sb
, __func__
, "metadata inode efe not found, "
855 "will try mirror inode.");
857 } else if (UDF_I(mdata
->s_metadata_fe
)->i_alloc_type
!=
858 ICBTAG_FLAG_AD_SHORT
) {
859 udf_warning(sb
, __func__
, "metadata inode efe does not have "
860 "short allocation descriptors!");
862 iput(mdata
->s_metadata_fe
);
863 mdata
->s_metadata_fe
= NULL
;
866 /* mirror file entry */
867 addr
.logicalBlockNum
= mdata
->s_mirror_file_loc
;
868 addr
.partitionReferenceNum
= map
->s_partition_num
;
870 udf_debug("Mirror metadata file location: block = %d part = %d\n",
871 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
873 mdata
->s_mirror_fe
= udf_iget(sb
, &addr
);
875 if (mdata
->s_mirror_fe
== NULL
) {
877 udf_error(sb
, __func__
, "mirror inode efe not found "
878 "and metadata inode is missing too, exiting...");
881 udf_warning(sb
, __func__
, "mirror inode efe not found,"
882 " but metadata inode is OK");
883 } else if (UDF_I(mdata
->s_mirror_fe
)->i_alloc_type
!=
884 ICBTAG_FLAG_AD_SHORT
) {
885 udf_warning(sb
, __func__
, "mirror inode efe does not have "
886 "short allocation descriptors!");
887 iput(mdata
->s_mirror_fe
);
888 mdata
->s_mirror_fe
= NULL
;
896 * Load only if bitmap file location differs from 0xFFFFFFFF (DCN-5102)
898 if (mdata
->s_bitmap_file_loc
!= 0xFFFFFFFF) {
899 addr
.logicalBlockNum
= mdata
->s_bitmap_file_loc
;
900 addr
.partitionReferenceNum
= map
->s_partition_num
;
902 udf_debug("Bitmap file location: block = %d part = %d\n",
903 addr
.logicalBlockNum
, addr
.partitionReferenceNum
);
905 mdata
->s_bitmap_fe
= udf_iget(sb
, &addr
);
907 if (mdata
->s_bitmap_fe
== NULL
) {
908 if (sb
->s_flags
& MS_RDONLY
)
909 udf_warning(sb
, __func__
, "bitmap inode efe "
910 "not found but it's ok since the disc"
911 " is mounted read-only");
913 udf_error(sb
, __func__
, "bitmap inode efe not "
914 "found and attempted read-write mount");
920 udf_debug("udf_load_metadata_files Ok\n");
928 static void udf_load_fileset(struct super_block
*sb
, struct buffer_head
*bh
,
929 struct kernel_lb_addr
*root
)
931 struct fileSetDesc
*fset
;
933 fset
= (struct fileSetDesc
*)bh
->b_data
;
935 *root
= lelb_to_cpu(fset
->rootDirectoryICB
.extLocation
);
937 UDF_SB(sb
)->s_serial_number
= le16_to_cpu(fset
->descTag
.tagSerialNum
);
939 udf_debug("Rootdir at block=%d, partition=%d\n",
940 root
->logicalBlockNum
, root
->partitionReferenceNum
);
943 int udf_compute_nr_groups(struct super_block
*sb
, u32 partition
)
945 struct udf_part_map
*map
= &UDF_SB(sb
)->s_partmaps
[partition
];
946 return DIV_ROUND_UP(map
->s_partition_len
+
947 (sizeof(struct spaceBitmapDesc
) << 3),
948 sb
->s_blocksize
* 8);
951 static struct udf_bitmap
*udf_sb_alloc_bitmap(struct super_block
*sb
, u32 index
)
953 struct udf_bitmap
*bitmap
;
957 nr_groups
= udf_compute_nr_groups(sb
, index
);
958 size
= sizeof(struct udf_bitmap
) +
959 (sizeof(struct buffer_head
*) * nr_groups
);
961 if (size
<= PAGE_SIZE
)
962 bitmap
= kmalloc(size
, GFP_KERNEL
);
964 bitmap
= vmalloc(size
); /* TODO: get rid of vmalloc */
966 if (bitmap
== NULL
) {
967 udf_error(sb
, __func__
,
968 "Unable to allocate space for bitmap "
969 "and %d buffer_head pointers", nr_groups
);
973 memset(bitmap
, 0x00, size
);
974 bitmap
->s_block_bitmap
= (struct buffer_head
**)(bitmap
+ 1);
975 bitmap
->s_nr_groups
= nr_groups
;
979 static int udf_fill_partdesc_info(struct super_block
*sb
,
980 struct partitionDesc
*p
, int p_index
)
982 struct udf_part_map
*map
;
983 struct udf_sb_info
*sbi
= UDF_SB(sb
);
984 struct partitionHeaderDesc
*phd
;
986 map
= &sbi
->s_partmaps
[p_index
];
988 map
->s_partition_len
= le32_to_cpu(p
->partitionLength
); /* blocks */
989 map
->s_partition_root
= le32_to_cpu(p
->partitionStartingLocation
);
991 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY
))
992 map
->s_partition_flags
|= UDF_PART_FLAG_READ_ONLY
;
993 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE
))
994 map
->s_partition_flags
|= UDF_PART_FLAG_WRITE_ONCE
;
995 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE
))
996 map
->s_partition_flags
|= UDF_PART_FLAG_REWRITABLE
;
997 if (p
->accessType
== cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE
))
998 map
->s_partition_flags
|= UDF_PART_FLAG_OVERWRITABLE
;
1000 udf_debug("Partition (%d type %x) starts at physical %d, "
1001 "block length %d\n", p_index
,
1002 map
->s_partition_type
, map
->s_partition_root
,
1003 map
->s_partition_len
);
1005 if (strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR02
) &&
1006 strcmp(p
->partitionContents
.ident
, PD_PARTITION_CONTENTS_NSR03
))
1009 phd
= (struct partitionHeaderDesc
*)p
->partitionContentsUse
;
1010 if (phd
->unallocSpaceTable
.extLength
) {
1011 struct kernel_lb_addr loc
= {
1012 .logicalBlockNum
= le32_to_cpu(
1013 phd
->unallocSpaceTable
.extPosition
),
1014 .partitionReferenceNum
= p_index
,
1017 map
->s_uspace
.s_table
= udf_iget(sb
, &loc
);
1018 if (!map
->s_uspace
.s_table
) {
1019 udf_debug("cannot load unallocSpaceTable (part %d)\n",
1023 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_TABLE
;
1024 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1025 p_index
, map
->s_uspace
.s_table
->i_ino
);
1028 if (phd
->unallocSpaceBitmap
.extLength
) {
1029 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1032 map
->s_uspace
.s_bitmap
= bitmap
;
1033 bitmap
->s_extLength
= le32_to_cpu(
1034 phd
->unallocSpaceBitmap
.extLength
);
1035 bitmap
->s_extPosition
= le32_to_cpu(
1036 phd
->unallocSpaceBitmap
.extPosition
);
1037 map
->s_partition_flags
|= UDF_PART_FLAG_UNALLOC_BITMAP
;
1038 udf_debug("unallocSpaceBitmap (part %d) @ %d\n", p_index
,
1039 bitmap
->s_extPosition
);
1042 if (phd
->partitionIntegrityTable
.extLength
)
1043 udf_debug("partitionIntegrityTable (part %d)\n", p_index
);
1045 if (phd
->freedSpaceTable
.extLength
) {
1046 struct kernel_lb_addr loc
= {
1047 .logicalBlockNum
= le32_to_cpu(
1048 phd
->freedSpaceTable
.extPosition
),
1049 .partitionReferenceNum
= p_index
,
1052 map
->s_fspace
.s_table
= udf_iget(sb
, &loc
);
1053 if (!map
->s_fspace
.s_table
) {
1054 udf_debug("cannot load freedSpaceTable (part %d)\n",
1059 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_TABLE
;
1060 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1061 p_index
, map
->s_fspace
.s_table
->i_ino
);
1064 if (phd
->freedSpaceBitmap
.extLength
) {
1065 struct udf_bitmap
*bitmap
= udf_sb_alloc_bitmap(sb
, p_index
);
1068 map
->s_fspace
.s_bitmap
= bitmap
;
1069 bitmap
->s_extLength
= le32_to_cpu(
1070 phd
->freedSpaceBitmap
.extLength
);
1071 bitmap
->s_extPosition
= le32_to_cpu(
1072 phd
->freedSpaceBitmap
.extPosition
);
1073 map
->s_partition_flags
|= UDF_PART_FLAG_FREED_BITMAP
;
1074 udf_debug("freedSpaceBitmap (part %d) @ %d\n", p_index
,
1075 bitmap
->s_extPosition
);
1080 static void udf_find_vat_block(struct super_block
*sb
, int p_index
,
1081 int type1_index
, sector_t start_block
)
1083 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1084 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1086 struct kernel_lb_addr ino
;
1089 * VAT file entry is in the last recorded block. Some broken disks have
1090 * it a few blocks before so try a bit harder...
1092 ino
.partitionReferenceNum
= type1_index
;
1093 for (vat_block
= start_block
;
1094 vat_block
>= map
->s_partition_root
&&
1095 vat_block
>= start_block
- 3 &&
1096 !sbi
->s_vat_inode
; vat_block
--) {
1097 ino
.logicalBlockNum
= vat_block
- map
->s_partition_root
;
1098 sbi
->s_vat_inode
= udf_iget(sb
, &ino
);
1102 static int udf_load_vat(struct super_block
*sb
, int p_index
, int type1_index
)
1104 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1105 struct udf_part_map
*map
= &sbi
->s_partmaps
[p_index
];
1106 struct buffer_head
*bh
= NULL
;
1107 struct udf_inode_info
*vati
;
1109 struct virtualAllocationTable20
*vat20
;
1110 sector_t blocks
= sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
;
1112 udf_find_vat_block(sb
, p_index
, type1_index
, sbi
->s_last_block
);
1113 if (!sbi
->s_vat_inode
&&
1114 sbi
->s_last_block
!= blocks
- 1) {
1115 printk(KERN_NOTICE
"UDF-fs: Failed to read VAT inode from the"
1116 " last recorded block (%lu), retrying with the last "
1117 "block of the device (%lu).\n",
1118 (unsigned long)sbi
->s_last_block
,
1119 (unsigned long)blocks
- 1);
1120 udf_find_vat_block(sb
, p_index
, type1_index
, blocks
- 1);
1122 if (!sbi
->s_vat_inode
)
1125 if (map
->s_partition_type
== UDF_VIRTUAL_MAP15
) {
1126 map
->s_type_specific
.s_virtual
.s_start_offset
= 0;
1127 map
->s_type_specific
.s_virtual
.s_num_entries
=
1128 (sbi
->s_vat_inode
->i_size
- 36) >> 2;
1129 } else if (map
->s_partition_type
== UDF_VIRTUAL_MAP20
) {
1130 vati
= UDF_I(sbi
->s_vat_inode
);
1131 if (vati
->i_alloc_type
!= ICBTAG_FLAG_AD_IN_ICB
) {
1132 pos
= udf_block_map(sbi
->s_vat_inode
, 0);
1133 bh
= sb_bread(sb
, pos
);
1136 vat20
= (struct virtualAllocationTable20
*)bh
->b_data
;
1138 vat20
= (struct virtualAllocationTable20
*)
1142 map
->s_type_specific
.s_virtual
.s_start_offset
=
1143 le16_to_cpu(vat20
->lengthHeader
);
1144 map
->s_type_specific
.s_virtual
.s_num_entries
=
1145 (sbi
->s_vat_inode
->i_size
-
1146 map
->s_type_specific
.s_virtual
.
1147 s_start_offset
) >> 2;
1153 static int udf_load_partdesc(struct super_block
*sb
, sector_t block
)
1155 struct buffer_head
*bh
;
1156 struct partitionDesc
*p
;
1157 struct udf_part_map
*map
;
1158 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1160 uint16_t partitionNumber
;
1164 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1167 if (ident
!= TAG_IDENT_PD
)
1170 p
= (struct partitionDesc
*)bh
->b_data
;
1171 partitionNumber
= le16_to_cpu(p
->partitionNumber
);
1173 /* First scan for TYPE1, SPARABLE and METADATA partitions */
1174 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1175 map
= &sbi
->s_partmaps
[i
];
1176 udf_debug("Searching map: (%d == %d)\n",
1177 map
->s_partition_num
, partitionNumber
);
1178 if (map
->s_partition_num
== partitionNumber
&&
1179 (map
->s_partition_type
== UDF_TYPE1_MAP15
||
1180 map
->s_partition_type
== UDF_SPARABLE_MAP15
))
1184 if (i
>= sbi
->s_partitions
) {
1185 udf_debug("Partition (%d) not found in partition map\n",
1190 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1193 * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and
1194 * PHYSICAL partitions are already set up
1197 for (i
= 0; i
< sbi
->s_partitions
; i
++) {
1198 map
= &sbi
->s_partmaps
[i
];
1200 if (map
->s_partition_num
== partitionNumber
&&
1201 (map
->s_partition_type
== UDF_VIRTUAL_MAP15
||
1202 map
->s_partition_type
== UDF_VIRTUAL_MAP20
||
1203 map
->s_partition_type
== UDF_METADATA_MAP25
))
1207 if (i
>= sbi
->s_partitions
)
1210 ret
= udf_fill_partdesc_info(sb
, p
, i
);
1214 if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
1215 ret
= udf_load_metadata_files(sb
, i
);
1217 printk(KERN_ERR
"UDF-fs: error loading MetaData "
1218 "partition map %d\n", i
);
1222 ret
= udf_load_vat(sb
, i
, type1_idx
);
1226 * Mark filesystem read-only if we have a partition with
1227 * virtual map since we don't handle writing to it (we
1228 * overwrite blocks instead of relocating them).
1230 sb
->s_flags
|= MS_RDONLY
;
1231 printk(KERN_NOTICE
"UDF-fs: Filesystem marked read-only "
1232 "because writing to pseudooverwrite partition is "
1233 "not implemented.\n");
1236 /* In case loading failed, we handle cleanup in udf_fill_super */
1241 static int udf_load_logicalvol(struct super_block
*sb
, sector_t block
,
1242 struct kernel_lb_addr
*fileset
)
1244 struct logicalVolDesc
*lvd
;
1247 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1248 struct genericPartitionMap
*gpm
;
1250 struct buffer_head
*bh
;
1253 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1256 BUG_ON(ident
!= TAG_IDENT_LVD
);
1257 lvd
= (struct logicalVolDesc
*)bh
->b_data
;
1259 i
= udf_sb_alloc_partition_maps(sb
, le32_to_cpu(lvd
->numPartitionMaps
));
1265 for (i
= 0, offset
= 0;
1266 i
< sbi
->s_partitions
&& offset
< le32_to_cpu(lvd
->mapTableLength
);
1267 i
++, offset
+= gpm
->partitionMapLength
) {
1268 struct udf_part_map
*map
= &sbi
->s_partmaps
[i
];
1269 gpm
= (struct genericPartitionMap
*)
1270 &(lvd
->partitionMaps
[offset
]);
1271 type
= gpm
->partitionMapType
;
1273 struct genericPartitionMap1
*gpm1
=
1274 (struct genericPartitionMap1
*)gpm
;
1275 map
->s_partition_type
= UDF_TYPE1_MAP15
;
1276 map
->s_volumeseqnum
= le16_to_cpu(gpm1
->volSeqNum
);
1277 map
->s_partition_num
= le16_to_cpu(gpm1
->partitionNum
);
1278 map
->s_partition_func
= NULL
;
1279 } else if (type
== 2) {
1280 struct udfPartitionMap2
*upm2
=
1281 (struct udfPartitionMap2
*)gpm
;
1282 if (!strncmp(upm2
->partIdent
.ident
, UDF_ID_VIRTUAL
,
1283 strlen(UDF_ID_VIRTUAL
))) {
1285 le16_to_cpu(((__le16
*)upm2
->partIdent
.
1288 map
->s_partition_type
=
1290 map
->s_partition_func
=
1291 udf_get_pblock_virt15
;
1293 map
->s_partition_type
=
1295 map
->s_partition_func
=
1296 udf_get_pblock_virt20
;
1298 } else if (!strncmp(upm2
->partIdent
.ident
,
1300 strlen(UDF_ID_SPARABLE
))) {
1302 struct sparingTable
*st
;
1303 struct sparablePartitionMap
*spm
=
1304 (struct sparablePartitionMap
*)gpm
;
1306 map
->s_partition_type
= UDF_SPARABLE_MAP15
;
1307 map
->s_type_specific
.s_sparing
.s_packet_len
=
1308 le16_to_cpu(spm
->packetLength
);
1309 for (j
= 0; j
< spm
->numSparingTables
; j
++) {
1310 struct buffer_head
*bh2
;
1313 spm
->locSparingTable
[j
]);
1314 bh2
= udf_read_tagged(sb
, loc
, loc
,
1316 map
->s_type_specific
.s_sparing
.
1317 s_spar_map
[j
] = bh2
;
1322 st
= (struct sparingTable
*)bh2
->b_data
;
1323 if (ident
!= 0 || strncmp(
1324 st
->sparingIdent
.ident
,
1326 strlen(UDF_ID_SPARING
))) {
1328 map
->s_type_specific
.s_sparing
.
1329 s_spar_map
[j
] = NULL
;
1332 map
->s_partition_func
= udf_get_pblock_spar15
;
1333 } else if (!strncmp(upm2
->partIdent
.ident
,
1335 strlen(UDF_ID_METADATA
))) {
1336 struct udf_meta_data
*mdata
=
1337 &map
->s_type_specific
.s_metadata
;
1338 struct metadataPartitionMap
*mdm
=
1339 (struct metadataPartitionMap
*)
1340 &(lvd
->partitionMaps
[offset
]);
1341 udf_debug("Parsing Logical vol part %d "
1342 "type %d id=%s\n", i
, type
,
1345 map
->s_partition_type
= UDF_METADATA_MAP25
;
1346 map
->s_partition_func
= udf_get_pblock_meta25
;
1348 mdata
->s_meta_file_loc
=
1349 le32_to_cpu(mdm
->metadataFileLoc
);
1350 mdata
->s_mirror_file_loc
=
1351 le32_to_cpu(mdm
->metadataMirrorFileLoc
);
1352 mdata
->s_bitmap_file_loc
=
1353 le32_to_cpu(mdm
->metadataBitmapFileLoc
);
1354 mdata
->s_alloc_unit_size
=
1355 le32_to_cpu(mdm
->allocUnitSize
);
1356 mdata
->s_align_unit_size
=
1357 le16_to_cpu(mdm
->alignUnitSize
);
1358 mdata
->s_dup_md_flag
=
1361 udf_debug("Metadata Ident suffix=0x%x\n",
1364 mdm
->partIdent
.identSuffix
)[0])));
1365 udf_debug("Metadata part num=%d\n",
1366 le16_to_cpu(mdm
->partitionNum
));
1367 udf_debug("Metadata part alloc unit size=%d\n",
1368 le32_to_cpu(mdm
->allocUnitSize
));
1369 udf_debug("Metadata file loc=%d\n",
1370 le32_to_cpu(mdm
->metadataFileLoc
));
1371 udf_debug("Mirror file loc=%d\n",
1372 le32_to_cpu(mdm
->metadataMirrorFileLoc
));
1373 udf_debug("Bitmap file loc=%d\n",
1374 le32_to_cpu(mdm
->metadataBitmapFileLoc
));
1375 udf_debug("Duplicate Flag: %d %d\n",
1376 mdata
->s_dup_md_flag
, mdm
->flags
);
1378 udf_debug("Unknown ident: %s\n",
1379 upm2
->partIdent
.ident
);
1382 map
->s_volumeseqnum
= le16_to_cpu(upm2
->volSeqNum
);
1383 map
->s_partition_num
= le16_to_cpu(upm2
->partitionNum
);
1385 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1386 i
, map
->s_partition_num
, type
,
1387 map
->s_volumeseqnum
);
1391 struct long_ad
*la
= (struct long_ad
*)&(lvd
->logicalVolContentsUse
[0]);
1393 *fileset
= lelb_to_cpu(la
->extLocation
);
1394 udf_debug("FileSet found in LogicalVolDesc at block=%d, "
1395 "partition=%d\n", fileset
->logicalBlockNum
,
1396 fileset
->partitionReferenceNum
);
1398 if (lvd
->integritySeqExt
.extLength
)
1399 udf_load_logicalvolint(sb
, leea_to_cpu(lvd
->integritySeqExt
));
1407 * udf_load_logicalvolint
1410 static void udf_load_logicalvolint(struct super_block
*sb
, struct kernel_extent_ad loc
)
1412 struct buffer_head
*bh
= NULL
;
1414 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1415 struct logicalVolIntegrityDesc
*lvid
;
1417 while (loc
.extLength
> 0 &&
1418 (bh
= udf_read_tagged(sb
, loc
.extLocation
,
1419 loc
.extLocation
, &ident
)) &&
1420 ident
== TAG_IDENT_LVID
) {
1421 sbi
->s_lvid_bh
= bh
;
1422 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1424 if (lvid
->nextIntegrityExt
.extLength
)
1425 udf_load_logicalvolint(sb
,
1426 leea_to_cpu(lvid
->nextIntegrityExt
));
1428 if (sbi
->s_lvid_bh
!= bh
)
1430 loc
.extLength
-= sb
->s_blocksize
;
1433 if (sbi
->s_lvid_bh
!= bh
)
1438 * udf_process_sequence
1441 * Process a main/reserve volume descriptor sequence.
1444 * sb Pointer to _locked_ superblock.
1445 * block First block of first extent of the sequence.
1446 * lastblock Lastblock of first extent of the sequence.
1449 * July 1, 1997 - Andrew E. Mileski
1450 * Written, tested, and released.
1452 static noinline
int udf_process_sequence(struct super_block
*sb
, long block
,
1453 long lastblock
, struct kernel_lb_addr
*fileset
)
1455 struct buffer_head
*bh
= NULL
;
1456 struct udf_vds_record vds
[VDS_POS_LENGTH
];
1457 struct udf_vds_record
*curr
;
1458 struct generic_desc
*gd
;
1459 struct volDescPtr
*vdp
;
1463 long next_s
= 0, next_e
= 0;
1465 memset(vds
, 0, sizeof(struct udf_vds_record
) * VDS_POS_LENGTH
);
1468 * Read the main descriptor sequence and find which descriptors
1471 for (; (!done
&& block
<= lastblock
); block
++) {
1473 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1475 printk(KERN_ERR
"udf: Block %Lu of volume descriptor "
1476 "sequence is corrupted or we could not read "
1477 "it.\n", (unsigned long long)block
);
1481 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1482 gd
= (struct generic_desc
*)bh
->b_data
;
1483 vdsn
= le32_to_cpu(gd
->volDescSeqNum
);
1485 case TAG_IDENT_PVD
: /* ISO 13346 3/10.1 */
1486 curr
= &vds
[VDS_POS_PRIMARY_VOL_DESC
];
1487 if (vdsn
>= curr
->volDescSeqNum
) {
1488 curr
->volDescSeqNum
= vdsn
;
1489 curr
->block
= block
;
1492 case TAG_IDENT_VDP
: /* ISO 13346 3/10.3 */
1493 curr
= &vds
[VDS_POS_VOL_DESC_PTR
];
1494 if (vdsn
>= curr
->volDescSeqNum
) {
1495 curr
->volDescSeqNum
= vdsn
;
1496 curr
->block
= block
;
1498 vdp
= (struct volDescPtr
*)bh
->b_data
;
1499 next_s
= le32_to_cpu(
1500 vdp
->nextVolDescSeqExt
.extLocation
);
1501 next_e
= le32_to_cpu(
1502 vdp
->nextVolDescSeqExt
.extLength
);
1503 next_e
= next_e
>> sb
->s_blocksize_bits
;
1507 case TAG_IDENT_IUVD
: /* ISO 13346 3/10.4 */
1508 curr
= &vds
[VDS_POS_IMP_USE_VOL_DESC
];
1509 if (vdsn
>= curr
->volDescSeqNum
) {
1510 curr
->volDescSeqNum
= vdsn
;
1511 curr
->block
= block
;
1514 case TAG_IDENT_PD
: /* ISO 13346 3/10.5 */
1515 curr
= &vds
[VDS_POS_PARTITION_DESC
];
1517 curr
->block
= block
;
1519 case TAG_IDENT_LVD
: /* ISO 13346 3/10.6 */
1520 curr
= &vds
[VDS_POS_LOGICAL_VOL_DESC
];
1521 if (vdsn
>= curr
->volDescSeqNum
) {
1522 curr
->volDescSeqNum
= vdsn
;
1523 curr
->block
= block
;
1526 case TAG_IDENT_USD
: /* ISO 13346 3/10.8 */
1527 curr
= &vds
[VDS_POS_UNALLOC_SPACE_DESC
];
1528 if (vdsn
>= curr
->volDescSeqNum
) {
1529 curr
->volDescSeqNum
= vdsn
;
1530 curr
->block
= block
;
1533 case TAG_IDENT_TD
: /* ISO 13346 3/10.9 */
1534 vds
[VDS_POS_TERMINATING_DESC
].block
= block
;
1538 next_s
= next_e
= 0;
1546 * Now read interesting descriptors again and process them
1547 * in a suitable order
1549 if (!vds
[VDS_POS_PRIMARY_VOL_DESC
].block
) {
1550 printk(KERN_ERR
"udf: Primary Volume Descriptor not found!\n");
1553 if (udf_load_pvoldesc(sb
, vds
[VDS_POS_PRIMARY_VOL_DESC
].block
))
1556 if (vds
[VDS_POS_LOGICAL_VOL_DESC
].block
&& udf_load_logicalvol(sb
,
1557 vds
[VDS_POS_LOGICAL_VOL_DESC
].block
, fileset
))
1560 if (vds
[VDS_POS_PARTITION_DESC
].block
) {
1562 * We rescan the whole descriptor sequence to find
1563 * partition descriptor blocks and process them.
1565 for (block
= vds
[VDS_POS_PARTITION_DESC
].block
;
1566 block
< vds
[VDS_POS_TERMINATING_DESC
].block
;
1568 if (udf_load_partdesc(sb
, block
))
1575 static int udf_load_sequence(struct super_block
*sb
, struct buffer_head
*bh
,
1576 struct kernel_lb_addr
*fileset
)
1578 struct anchorVolDescPtr
*anchor
;
1579 long main_s
, main_e
, reserve_s
, reserve_e
;
1581 anchor
= (struct anchorVolDescPtr
*)bh
->b_data
;
1583 /* Locate the main sequence */
1584 main_s
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLocation
);
1585 main_e
= le32_to_cpu(anchor
->mainVolDescSeqExt
.extLength
);
1586 main_e
= main_e
>> sb
->s_blocksize_bits
;
1589 /* Locate the reserve sequence */
1590 reserve_s
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLocation
);
1591 reserve_e
= le32_to_cpu(anchor
->reserveVolDescSeqExt
.extLength
);
1592 reserve_e
= reserve_e
>> sb
->s_blocksize_bits
;
1593 reserve_e
+= reserve_s
;
1595 /* Process the main & reserve sequences */
1596 /* responsible for finding the PartitionDesc(s) */
1597 if (!udf_process_sequence(sb
, main_s
, main_e
, fileset
))
1599 return !udf_process_sequence(sb
, reserve_s
, reserve_e
, fileset
);
1603 * Check whether there is an anchor block in the given block and
1604 * load Volume Descriptor Sequence if so.
1606 static int udf_check_anchor_block(struct super_block
*sb
, sector_t block
,
1607 struct kernel_lb_addr
*fileset
)
1609 struct buffer_head
*bh
;
1613 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_VARCONV
) &&
1614 udf_fixed_to_variable(block
) >=
1615 sb
->s_bdev
->bd_inode
->i_size
>> sb
->s_blocksize_bits
)
1618 bh
= udf_read_tagged(sb
, block
, block
, &ident
);
1621 if (ident
!= TAG_IDENT_AVDP
) {
1625 ret
= udf_load_sequence(sb
, bh
, fileset
);
1630 /* Search for an anchor volume descriptor pointer */
1631 static sector_t
udf_scan_anchors(struct super_block
*sb
, sector_t lastblock
,
1632 struct kernel_lb_addr
*fileset
)
1636 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1639 /* First try user provided anchor */
1640 if (sbi
->s_anchor
) {
1641 if (udf_check_anchor_block(sb
, sbi
->s_anchor
, fileset
))
1645 * according to spec, anchor is in either:
1649 * however, if the disc isn't closed, it could be 512.
1651 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 256, fileset
))
1654 * The trouble is which block is the last one. Drives often misreport
1655 * this so we try various possibilities.
1657 last
[last_count
++] = lastblock
;
1659 last
[last_count
++] = lastblock
- 1;
1660 last
[last_count
++] = lastblock
+ 1;
1662 last
[last_count
++] = lastblock
- 2;
1663 if (lastblock
>= 150)
1664 last
[last_count
++] = lastblock
- 150;
1665 if (lastblock
>= 152)
1666 last
[last_count
++] = lastblock
- 152;
1668 for (i
= 0; i
< last_count
; i
++) {
1669 if (last
[i
] >= sb
->s_bdev
->bd_inode
->i_size
>>
1670 sb
->s_blocksize_bits
)
1672 if (udf_check_anchor_block(sb
, last
[i
], fileset
))
1676 if (udf_check_anchor_block(sb
, last
[i
] - 256, fileset
))
1680 /* Finally try block 512 in case media is open */
1681 if (udf_check_anchor_block(sb
, sbi
->s_session
+ 512, fileset
))
1687 * Find an anchor volume descriptor and load Volume Descriptor Sequence from
1688 * area specified by it. The function expects sbi->s_lastblock to be the last
1689 * block on the media.
1691 * Return 1 if ok, 0 if not found.
1694 static int udf_find_anchor(struct super_block
*sb
,
1695 struct kernel_lb_addr
*fileset
)
1698 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1700 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1704 /* No anchor found? Try VARCONV conversion of block numbers */
1705 UDF_SET_FLAG(sb
, UDF_FLAG_VARCONV
);
1706 /* Firstly, we try to not convert number of the last block */
1707 lastblock
= udf_scan_anchors(sb
,
1708 udf_variable_to_fixed(sbi
->s_last_block
),
1713 /* Secondly, we try with converted number of the last block */
1714 lastblock
= udf_scan_anchors(sb
, sbi
->s_last_block
, fileset
);
1716 /* VARCONV didn't help. Clear it. */
1717 UDF_CLEAR_FLAG(sb
, UDF_FLAG_VARCONV
);
1721 sbi
->s_last_block
= lastblock
;
1726 * Check Volume Structure Descriptor, find Anchor block and load Volume
1727 * Descriptor Sequence
1729 static int udf_load_vrs(struct super_block
*sb
, struct udf_options
*uopt
,
1730 int silent
, struct kernel_lb_addr
*fileset
)
1732 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1735 if (!sb_set_blocksize(sb
, uopt
->blocksize
)) {
1737 printk(KERN_WARNING
"UDF-fs: Bad block size\n");
1740 sbi
->s_last_block
= uopt
->lastblock
;
1742 /* Check that it is NSR02 compliant */
1743 nsr_off
= udf_check_vsd(sb
);
1746 printk(KERN_WARNING
"UDF-fs: No VRS found\n");
1750 udf_debug("Failed to read byte 32768. Assuming open "
1751 "disc. Skipping validity check\n");
1752 if (!sbi
->s_last_block
)
1753 sbi
->s_last_block
= udf_get_last_block(sb
);
1755 udf_debug("Validity check skipped because of novrs option\n");
1758 /* Look for anchor block and load Volume Descriptor Sequence */
1759 sbi
->s_anchor
= uopt
->anchor
;
1760 if (!udf_find_anchor(sb
, fileset
)) {
1762 printk(KERN_WARNING
"UDF-fs: No anchor found\n");
1768 static void udf_open_lvid(struct super_block
*sb
)
1770 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1771 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1772 struct logicalVolIntegrityDesc
*lvid
;
1773 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1777 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1778 lvidiu
= udf_sb_lvidiu(sbi
);
1780 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1781 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1782 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
,
1784 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN
);
1786 lvid
->descTag
.descCRC
= cpu_to_le16(
1787 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1788 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1790 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1791 mark_buffer_dirty(bh
);
1792 sbi
->s_lvid_dirty
= 0;
1795 static void udf_close_lvid(struct super_block
*sb
)
1797 struct udf_sb_info
*sbi
= UDF_SB(sb
);
1798 struct buffer_head
*bh
= sbi
->s_lvid_bh
;
1799 struct logicalVolIntegrityDesc
*lvid
;
1800 struct logicalVolIntegrityDescImpUse
*lvidiu
;
1805 lvid
= (struct logicalVolIntegrityDesc
*)bh
->b_data
;
1806 lvidiu
= udf_sb_lvidiu(sbi
);
1807 lvidiu
->impIdent
.identSuffix
[0] = UDF_OS_CLASS_UNIX
;
1808 lvidiu
->impIdent
.identSuffix
[1] = UDF_OS_ID_LINUX
;
1809 udf_time_to_disk_stamp(&lvid
->recordingDateAndTime
, CURRENT_TIME
);
1810 if (UDF_MAX_WRITE_VERSION
> le16_to_cpu(lvidiu
->maxUDFWriteRev
))
1811 lvidiu
->maxUDFWriteRev
= cpu_to_le16(UDF_MAX_WRITE_VERSION
);
1812 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFReadRev
))
1813 lvidiu
->minUDFReadRev
= cpu_to_le16(sbi
->s_udfrev
);
1814 if (sbi
->s_udfrev
> le16_to_cpu(lvidiu
->minUDFWriteRev
))
1815 lvidiu
->minUDFWriteRev
= cpu_to_le16(sbi
->s_udfrev
);
1816 lvid
->integrityType
= cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE
);
1818 lvid
->descTag
.descCRC
= cpu_to_le16(
1819 crc_itu_t(0, (char *)lvid
+ sizeof(struct tag
),
1820 le16_to_cpu(lvid
->descTag
.descCRCLength
)));
1822 lvid
->descTag
.tagChecksum
= udf_tag_checksum(&lvid
->descTag
);
1823 mark_buffer_dirty(bh
);
1824 sbi
->s_lvid_dirty
= 0;
1827 static void udf_sb_free_bitmap(struct udf_bitmap
*bitmap
)
1830 int nr_groups
= bitmap
->s_nr_groups
;
1831 int size
= sizeof(struct udf_bitmap
) + (sizeof(struct buffer_head
*) *
1834 for (i
= 0; i
< nr_groups
; i
++)
1835 if (bitmap
->s_block_bitmap
[i
])
1836 brelse(bitmap
->s_block_bitmap
[i
]);
1838 if (size
<= PAGE_SIZE
)
1844 static void udf_free_partition(struct udf_part_map
*map
)
1847 struct udf_meta_data
*mdata
;
1849 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
)
1850 iput(map
->s_uspace
.s_table
);
1851 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
)
1852 iput(map
->s_fspace
.s_table
);
1853 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
)
1854 udf_sb_free_bitmap(map
->s_uspace
.s_bitmap
);
1855 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
)
1856 udf_sb_free_bitmap(map
->s_fspace
.s_bitmap
);
1857 if (map
->s_partition_type
== UDF_SPARABLE_MAP15
)
1858 for (i
= 0; i
< 4; i
++)
1859 brelse(map
->s_type_specific
.s_sparing
.s_spar_map
[i
]);
1860 else if (map
->s_partition_type
== UDF_METADATA_MAP25
) {
1861 mdata
= &map
->s_type_specific
.s_metadata
;
1862 iput(mdata
->s_metadata_fe
);
1863 mdata
->s_metadata_fe
= NULL
;
1865 iput(mdata
->s_mirror_fe
);
1866 mdata
->s_mirror_fe
= NULL
;
1868 iput(mdata
->s_bitmap_fe
);
1869 mdata
->s_bitmap_fe
= NULL
;
1873 static int udf_fill_super(struct super_block
*sb
, void *options
, int silent
)
1877 struct inode
*inode
= NULL
;
1878 struct udf_options uopt
;
1879 struct kernel_lb_addr rootdir
, fileset
;
1880 struct udf_sb_info
*sbi
;
1884 uopt
.flags
= (1 << UDF_FLAG_USE_AD_IN_ICB
) | (1 << UDF_FLAG_STRICT
);
1888 uopt
.fmode
= UDF_INVALID_MODE
;
1889 uopt
.dmode
= UDF_INVALID_MODE
;
1891 sbi
= kzalloc(sizeof(struct udf_sb_info
), GFP_KERNEL
);
1897 sb
->s_fs_info
= sbi
;
1899 mutex_init(&sbi
->s_alloc_mutex
);
1901 if (!udf_parse_options((char *)options
, &uopt
, false))
1904 if (uopt
.flags
& (1 << UDF_FLAG_UTF8
) &&
1905 uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) {
1906 udf_error(sb
, "udf_read_super",
1907 "utf8 cannot be combined with iocharset\n");
1910 #ifdef CONFIG_UDF_NLS
1911 if ((uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)) && !uopt
.nls_map
) {
1912 uopt
.nls_map
= load_nls_default();
1914 uopt
.flags
&= ~(1 << UDF_FLAG_NLS_MAP
);
1916 udf_debug("Using default NLS map\n");
1919 if (!(uopt
.flags
& (1 << UDF_FLAG_NLS_MAP
)))
1920 uopt
.flags
|= (1 << UDF_FLAG_UTF8
);
1922 fileset
.logicalBlockNum
= 0xFFFFFFFF;
1923 fileset
.partitionReferenceNum
= 0xFFFF;
1925 sbi
->s_flags
= uopt
.flags
;
1926 sbi
->s_uid
= uopt
.uid
;
1927 sbi
->s_gid
= uopt
.gid
;
1928 sbi
->s_umask
= uopt
.umask
;
1929 sbi
->s_fmode
= uopt
.fmode
;
1930 sbi
->s_dmode
= uopt
.dmode
;
1931 sbi
->s_nls_map
= uopt
.nls_map
;
1933 if (uopt
.session
== 0xFFFFFFFF)
1934 sbi
->s_session
= udf_get_last_session(sb
);
1936 sbi
->s_session
= uopt
.session
;
1938 udf_debug("Multi-session=%d\n", sbi
->s_session
);
1940 /* Fill in the rest of the superblock */
1941 sb
->s_op
= &udf_sb_ops
;
1942 sb
->s_export_op
= &udf_export_ops
;
1945 sb
->s_magic
= UDF_SUPER_MAGIC
;
1946 sb
->s_time_gran
= 1000;
1948 if (uopt
.flags
& (1 << UDF_FLAG_BLOCKSIZE_SET
)) {
1949 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
1951 uopt
.blocksize
= bdev_logical_block_size(sb
->s_bdev
);
1952 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
1953 if (!ret
&& uopt
.blocksize
!= UDF_DEFAULT_BLOCKSIZE
) {
1956 "UDF-fs: Rescanning with blocksize "
1957 "%d\n", UDF_DEFAULT_BLOCKSIZE
);
1958 uopt
.blocksize
= UDF_DEFAULT_BLOCKSIZE
;
1959 ret
= udf_load_vrs(sb
, &uopt
, silent
, &fileset
);
1963 printk(KERN_WARNING
"UDF-fs: No partition found (1)\n");
1967 udf_debug("Lastblock=%d\n", sbi
->s_last_block
);
1969 if (sbi
->s_lvid_bh
) {
1970 struct logicalVolIntegrityDescImpUse
*lvidiu
=
1972 uint16_t minUDFReadRev
= le16_to_cpu(lvidiu
->minUDFReadRev
);
1973 uint16_t minUDFWriteRev
= le16_to_cpu(lvidiu
->minUDFWriteRev
);
1974 /* uint16_t maxUDFWriteRev =
1975 le16_to_cpu(lvidiu->maxUDFWriteRev); */
1977 if (minUDFReadRev
> UDF_MAX_READ_VERSION
) {
1978 printk(KERN_ERR
"UDF-fs: minUDFReadRev=%x "
1980 le16_to_cpu(lvidiu
->minUDFReadRev
),
1981 UDF_MAX_READ_VERSION
);
1983 } else if (minUDFWriteRev
> UDF_MAX_WRITE_VERSION
)
1984 sb
->s_flags
|= MS_RDONLY
;
1986 sbi
->s_udfrev
= minUDFWriteRev
;
1988 if (minUDFReadRev
>= UDF_VERS_USE_EXTENDED_FE
)
1989 UDF_SET_FLAG(sb
, UDF_FLAG_USE_EXTENDED_FE
);
1990 if (minUDFReadRev
>= UDF_VERS_USE_STREAMS
)
1991 UDF_SET_FLAG(sb
, UDF_FLAG_USE_STREAMS
);
1994 if (!sbi
->s_partitions
) {
1995 printk(KERN_WARNING
"UDF-fs: No partition found (2)\n");
1999 if (sbi
->s_partmaps
[sbi
->s_partition
].s_partition_flags
&
2000 UDF_PART_FLAG_READ_ONLY
) {
2001 printk(KERN_NOTICE
"UDF-fs: Partition marked readonly; "
2002 "forcing readonly mount\n");
2003 sb
->s_flags
|= MS_RDONLY
;
2006 if (udf_find_fileset(sb
, &fileset
, &rootdir
)) {
2007 printk(KERN_WARNING
"UDF-fs: No fileset found\n");
2012 struct timestamp ts
;
2013 udf_time_to_disk_stamp(&ts
, sbi
->s_record_time
);
2014 udf_info("UDF: Mounting volume '%s', "
2015 "timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
2016 sbi
->s_volume_ident
, le16_to_cpu(ts
.year
), ts
.month
, ts
.day
,
2017 ts
.hour
, ts
.minute
, le16_to_cpu(ts
.typeAndTimezone
));
2019 if (!(sb
->s_flags
& MS_RDONLY
))
2022 /* Assign the root inode */
2023 /* assign inodes by physical block number */
2024 /* perhaps it's not extensible enough, but for now ... */
2025 inode
= udf_iget(sb
, &rootdir
);
2027 printk(KERN_ERR
"UDF-fs: Error in udf_iget, block=%d, "
2029 rootdir
.logicalBlockNum
, rootdir
.partitionReferenceNum
);
2033 /* Allocate a dentry for the root inode */
2034 sb
->s_root
= d_alloc_root(inode
);
2036 printk(KERN_ERR
"UDF-fs: Couldn't allocate root dentry\n");
2040 sb
->s_maxbytes
= MAX_LFS_FILESIZE
;
2045 if (sbi
->s_vat_inode
)
2046 iput(sbi
->s_vat_inode
);
2047 if (sbi
->s_partitions
)
2048 for (i
= 0; i
< sbi
->s_partitions
; i
++)
2049 udf_free_partition(&sbi
->s_partmaps
[i
]);
2050 #ifdef CONFIG_UDF_NLS
2051 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2052 unload_nls(sbi
->s_nls_map
);
2054 if (!(sb
->s_flags
& MS_RDONLY
))
2056 brelse(sbi
->s_lvid_bh
);
2058 kfree(sbi
->s_partmaps
);
2060 sb
->s_fs_info
= NULL
;
2066 static void udf_error(struct super_block
*sb
, const char *function
,
2067 const char *fmt
, ...)
2071 if (!(sb
->s_flags
& MS_RDONLY
)) {
2075 va_start(args
, fmt
);
2076 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2078 printk(KERN_CRIT
"UDF-fs error (device %s): %s: %s\n",
2079 sb
->s_id
, function
, error_buf
);
2082 void udf_warning(struct super_block
*sb
, const char *function
,
2083 const char *fmt
, ...)
2087 va_start(args
, fmt
);
2088 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2090 printk(KERN_WARNING
"UDF-fs warning (device %s): %s: %s\n",
2091 sb
->s_id
, function
, error_buf
);
2094 static void udf_put_super(struct super_block
*sb
)
2097 struct udf_sb_info
*sbi
;
2103 if (sbi
->s_vat_inode
)
2104 iput(sbi
->s_vat_inode
);
2105 if (sbi
->s_partitions
)
2106 for (i
= 0; i
< sbi
->s_partitions
; i
++)
2107 udf_free_partition(&sbi
->s_partmaps
[i
]);
2108 #ifdef CONFIG_UDF_NLS
2109 if (UDF_QUERY_FLAG(sb
, UDF_FLAG_NLS_MAP
))
2110 unload_nls(sbi
->s_nls_map
);
2112 if (!(sb
->s_flags
& MS_RDONLY
))
2114 brelse(sbi
->s_lvid_bh
);
2115 kfree(sbi
->s_partmaps
);
2116 kfree(sb
->s_fs_info
);
2117 sb
->s_fs_info
= NULL
;
2122 static int udf_sync_fs(struct super_block
*sb
, int wait
)
2124 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2126 mutex_lock(&sbi
->s_alloc_mutex
);
2127 if (sbi
->s_lvid_dirty
) {
2129 * Blockdevice will be synced later so we don't have to submit
2132 mark_buffer_dirty(sbi
->s_lvid_bh
);
2134 sbi
->s_lvid_dirty
= 0;
2136 mutex_unlock(&sbi
->s_alloc_mutex
);
2141 static int udf_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
2143 struct super_block
*sb
= dentry
->d_sb
;
2144 struct udf_sb_info
*sbi
= UDF_SB(sb
);
2145 struct logicalVolIntegrityDescImpUse
*lvidiu
;
2146 u64 id
= huge_encode_dev(sb
->s_bdev
->bd_dev
);
2148 if (sbi
->s_lvid_bh
!= NULL
)
2149 lvidiu
= udf_sb_lvidiu(sbi
);
2153 buf
->f_type
= UDF_SUPER_MAGIC
;
2154 buf
->f_bsize
= sb
->s_blocksize
;
2155 buf
->f_blocks
= sbi
->s_partmaps
[sbi
->s_partition
].s_partition_len
;
2156 buf
->f_bfree
= udf_count_free(sb
);
2157 buf
->f_bavail
= buf
->f_bfree
;
2158 buf
->f_files
= (lvidiu
!= NULL
? (le32_to_cpu(lvidiu
->numFiles
) +
2159 le32_to_cpu(lvidiu
->numDirs
)) : 0)
2161 buf
->f_ffree
= buf
->f_bfree
;
2162 buf
->f_namelen
= UDF_NAME_LEN
- 2;
2163 buf
->f_fsid
.val
[0] = (u32
)id
;
2164 buf
->f_fsid
.val
[1] = (u32
)(id
>> 32);
2169 static unsigned int udf_count_free_bitmap(struct super_block
*sb
,
2170 struct udf_bitmap
*bitmap
)
2172 struct buffer_head
*bh
= NULL
;
2173 unsigned int accum
= 0;
2175 int block
= 0, newblock
;
2176 struct kernel_lb_addr loc
;
2180 struct spaceBitmapDesc
*bm
;
2184 loc
.logicalBlockNum
= bitmap
->s_extPosition
;
2185 loc
.partitionReferenceNum
= UDF_SB(sb
)->s_partition
;
2186 bh
= udf_read_ptagged(sb
, &loc
, 0, &ident
);
2189 printk(KERN_ERR
"udf: udf_count_free failed\n");
2191 } else if (ident
!= TAG_IDENT_SBD
) {
2193 printk(KERN_ERR
"udf: udf_count_free failed\n");
2197 bm
= (struct spaceBitmapDesc
*)bh
->b_data
;
2198 bytes
= le32_to_cpu(bm
->numOfBytes
);
2199 index
= sizeof(struct spaceBitmapDesc
); /* offset in first block only */
2200 ptr
= (uint8_t *)bh
->b_data
;
2203 u32 cur_bytes
= min_t(u32
, bytes
, sb
->s_blocksize
- index
);
2204 accum
+= bitmap_weight((const unsigned long *)(ptr
+ index
),
2209 newblock
= udf_get_lb_pblock(sb
, &loc
, ++block
);
2210 bh
= udf_tread(sb
, newblock
);
2212 udf_debug("read failed\n");
2216 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
;
2238 epos
.block
= UDF_I(table
)->i_location
;
2239 epos
.offset
= sizeof(struct unallocSpaceEntry
);
2242 while ((etype
= udf_next_aext(table
, &epos
, &eloc
, &elen
, 1)) != -1)
2243 accum
+= (elen
>> table
->i_sb
->s_blocksize_bits
);
2252 static unsigned int udf_count_free(struct super_block
*sb
)
2254 unsigned int accum
= 0;
2255 struct udf_sb_info
*sbi
;
2256 struct udf_part_map
*map
;
2259 if (sbi
->s_lvid_bh
) {
2260 struct logicalVolIntegrityDesc
*lvid
=
2261 (struct logicalVolIntegrityDesc
*)
2262 sbi
->s_lvid_bh
->b_data
;
2263 if (le32_to_cpu(lvid
->numOfPartitions
) > sbi
->s_partition
) {
2264 accum
= le32_to_cpu(
2265 lvid
->freeSpaceTable
[sbi
->s_partition
]);
2266 if (accum
== 0xFFFFFFFF)
2274 map
= &sbi
->s_partmaps
[sbi
->s_partition
];
2275 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_BITMAP
) {
2276 accum
+= udf_count_free_bitmap(sb
,
2277 map
->s_uspace
.s_bitmap
);
2279 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_BITMAP
) {
2280 accum
+= udf_count_free_bitmap(sb
,
2281 map
->s_fspace
.s_bitmap
);
2286 if (map
->s_partition_flags
& UDF_PART_FLAG_UNALLOC_TABLE
) {
2287 accum
+= udf_count_free_table(sb
,
2288 map
->s_uspace
.s_table
);
2290 if (map
->s_partition_flags
& UDF_PART_FLAG_FREED_TABLE
) {
2291 accum
+= udf_count_free_table(sb
,
2292 map
->s_fspace
.s_table
);