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 /* These are the "meat" - everything else is stuffing */
79 static int udf_fill_super(struct super_block *, void *, int);
80 static void udf_put_super(struct super_block *);
81 static int udf_sync_fs(struct super_block *, int);
82 static int udf_remount_fs(struct super_block *, int *, char *);
83 static void udf_load_logicalvolint(struct super_block *, struct kernel_extent_ad);
84 static int udf_find_fileset(struct super_block *, struct kernel_lb_addr *,
85 struct kernel_lb_addr *);
86 static void udf_load_fileset(struct super_block *, struct buffer_head *,
87 struct kernel_lb_addr *);
88 static void udf_open_lvid(struct super_block *);
89 static void udf_close_lvid(struct super_block *);
90 static unsigned int udf_count_free(struct super_block *);
91 static int udf_statfs(struct dentry *, struct kstatfs *);
92 static int udf_show_options(struct seq_file *, struct dentry *);
94 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi)
96 struct logicalVolIntegrityDesc *lvid =
97 (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data;
98 __u32 number_of_partitions = le32_to_cpu(lvid->numOfPartitions);
99 __u32 offset = number_of_partitions * 2 *
100 sizeof(uint32_t)/sizeof(uint8_t);
101 return (struct logicalVolIntegrityDescImpUse *)&(lvid->impUse[offset]);
104 /* UDF filesystem type */
105 static struct dentry *udf_mount(struct file_system_type *fs_type,
106 int flags, const char *dev_name, void *data)
108 return mount_bdev(fs_type, flags, dev_name, data, udf_fill_super);
111 static struct file_system_type udf_fstype = {
112 .owner = THIS_MODULE,
115 .kill_sb = kill_block_super,
116 .fs_flags = FS_REQUIRES_DEV,
119 static struct kmem_cache *udf_inode_cachep;
121 static struct inode *udf_alloc_inode(struct super_block *sb)
123 struct udf_inode_info *ei;
124 ei = kmem_cache_alloc(udf_inode_cachep, GFP_KERNEL);
129 ei->i_lenExtents = 0;
130 ei->i_next_alloc_block = 0;
131 ei->i_next_alloc_goal = 0;
133 init_rwsem(&ei->i_data_sem);
135 return &ei->vfs_inode;
138 static void udf_i_callback(struct rcu_head *head)
140 struct inode *inode = container_of(head, struct inode, i_rcu);
141 kmem_cache_free(udf_inode_cachep, UDF_I(inode));
144 static void udf_destroy_inode(struct inode *inode)
146 call_rcu(&inode->i_rcu, udf_i_callback);
149 static void init_once(void *foo)
151 struct udf_inode_info *ei = (struct udf_inode_info *)foo;
153 ei->i_ext.i_data = NULL;
154 inode_init_once(&ei->vfs_inode);
157 static int init_inodecache(void)
159 udf_inode_cachep = kmem_cache_create("udf_inode_cache",
160 sizeof(struct udf_inode_info),
161 0, (SLAB_RECLAIM_ACCOUNT |
164 if (!udf_inode_cachep)
169 static void destroy_inodecache(void)
171 kmem_cache_destroy(udf_inode_cachep);
174 /* Superblock operations */
175 static const struct super_operations udf_sb_ops = {
176 .alloc_inode = udf_alloc_inode,
177 .destroy_inode = udf_destroy_inode,
178 .write_inode = udf_write_inode,
179 .evict_inode = udf_evict_inode,
180 .put_super = udf_put_super,
181 .sync_fs = udf_sync_fs,
182 .statfs = udf_statfs,
183 .remount_fs = udf_remount_fs,
184 .show_options = udf_show_options,
189 unsigned int blocksize;
190 unsigned int session;
191 unsigned int lastblock;
194 unsigned short partition;
195 unsigned int fileset;
196 unsigned int rootdir;
203 struct nls_table *nls_map;
206 static int __init init_udf_fs(void)
210 err = init_inodecache();
213 err = register_filesystem(&udf_fstype);
220 destroy_inodecache();
226 static void __exit exit_udf_fs(void)
228 unregister_filesystem(&udf_fstype);
229 destroy_inodecache();
232 module_init(init_udf_fs)
233 module_exit(exit_udf_fs)
235 static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count)
237 struct udf_sb_info *sbi = UDF_SB(sb);
239 sbi->s_partmaps = kcalloc(count, sizeof(struct udf_part_map),
241 if (!sbi->s_partmaps) {
242 udf_err(sb, "Unable to allocate space for %d partition maps\n",
244 sbi->s_partitions = 0;
248 sbi->s_partitions = count;
252 static int udf_show_options(struct seq_file *seq, struct dentry *root)
254 struct super_block *sb = root->d_sb;
255 struct udf_sb_info *sbi = UDF_SB(sb);
257 if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT))
258 seq_puts(seq, ",nostrict");
259 if (UDF_QUERY_FLAG(sb, UDF_FLAG_BLOCKSIZE_SET))
260 seq_printf(seq, ",bs=%lu", sb->s_blocksize);
261 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE))
262 seq_puts(seq, ",unhide");
263 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNDELETE))
264 seq_puts(seq, ",undelete");
265 if (!UDF_QUERY_FLAG(sb, UDF_FLAG_USE_AD_IN_ICB))
266 seq_puts(seq, ",noadinicb");
267 if (UDF_QUERY_FLAG(sb, UDF_FLAG_USE_SHORT_AD))
268 seq_puts(seq, ",shortad");
269 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_FORGET))
270 seq_puts(seq, ",uid=forget");
271 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_IGNORE))
272 seq_puts(seq, ",uid=ignore");
273 if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_FORGET))
274 seq_puts(seq, ",gid=forget");
275 if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_IGNORE))
276 seq_puts(seq, ",gid=ignore");
277 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
278 seq_printf(seq, ",uid=%u", sbi->s_uid);
279 if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
280 seq_printf(seq, ",gid=%u", sbi->s_gid);
281 if (sbi->s_umask != 0)
282 seq_printf(seq, ",umask=%ho", sbi->s_umask);
283 if (sbi->s_fmode != UDF_INVALID_MODE)
284 seq_printf(seq, ",mode=%ho", sbi->s_fmode);
285 if (sbi->s_dmode != UDF_INVALID_MODE)
286 seq_printf(seq, ",dmode=%ho", sbi->s_dmode);
287 if (UDF_QUERY_FLAG(sb, UDF_FLAG_SESSION_SET))
288 seq_printf(seq, ",session=%u", sbi->s_session);
289 if (UDF_QUERY_FLAG(sb, UDF_FLAG_LASTBLOCK_SET))
290 seq_printf(seq, ",lastblock=%u", sbi->s_last_block);
291 if (sbi->s_anchor != 0)
292 seq_printf(seq, ",anchor=%u", sbi->s_anchor);
294 * volume, partition, fileset and rootdir seem to be ignored
297 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8))
298 seq_puts(seq, ",utf8");
299 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP) && sbi->s_nls_map)
300 seq_printf(seq, ",iocharset=%s", sbi->s_nls_map->charset);
309 * Parse mount options.
312 * The following mount options are supported:
314 * gid= Set the default group.
315 * umask= Set the default umask.
316 * mode= Set the default file permissions.
317 * dmode= Set the default directory permissions.
318 * uid= Set the default user.
319 * bs= Set the block size.
320 * unhide Show otherwise hidden files.
321 * undelete Show deleted files in lists.
322 * adinicb Embed data in the inode (default)
323 * noadinicb Don't embed data in the inode
324 * shortad Use short ad's
325 * longad Use long ad's (default)
326 * nostrict Unset strict conformance
327 * iocharset= Set the NLS character set
329 * The remaining are for debugging and disaster recovery:
331 * novrs Skip volume sequence recognition
333 * The following expect a offset from 0.
335 * session= Set the CDROM session (default= last session)
336 * anchor= Override standard anchor location. (default= 256)
337 * volume= Override the VolumeDesc location. (unused)
338 * partition= Override the PartitionDesc location. (unused)
339 * lastblock= Set the last block of the filesystem/
341 * The following expect a offset from the partition root.
343 * fileset= Override the fileset block location. (unused)
344 * rootdir= Override the root directory location. (unused)
345 * WARNING: overriding the rootdir to a non-directory may
346 * yield highly unpredictable results.
349 * options Pointer to mount options string.
350 * uopts Pointer to mount options variable.
353 * <return> 1 Mount options parsed okay.
354 * <return> 0 Error parsing mount options.
357 * July 1, 1997 - Andrew E. Mileski
358 * Written, tested, and released.
362 Opt_novrs, Opt_nostrict, Opt_bs, Opt_unhide, Opt_undelete,
363 Opt_noadinicb, Opt_adinicb, Opt_shortad, Opt_longad,
364 Opt_gid, Opt_uid, Opt_umask, Opt_session, Opt_lastblock,
365 Opt_anchor, Opt_volume, Opt_partition, Opt_fileset,
366 Opt_rootdir, Opt_utf8, Opt_iocharset,
367 Opt_err, Opt_uforget, Opt_uignore, Opt_gforget, Opt_gignore,
371 static const match_table_t tokens = {
372 {Opt_novrs, "novrs"},
373 {Opt_nostrict, "nostrict"},
375 {Opt_unhide, "unhide"},
376 {Opt_undelete, "undelete"},
377 {Opt_noadinicb, "noadinicb"},
378 {Opt_adinicb, "adinicb"},
379 {Opt_shortad, "shortad"},
380 {Opt_longad, "longad"},
381 {Opt_uforget, "uid=forget"},
382 {Opt_uignore, "uid=ignore"},
383 {Opt_gforget, "gid=forget"},
384 {Opt_gignore, "gid=ignore"},
387 {Opt_umask, "umask=%o"},
388 {Opt_session, "session=%u"},
389 {Opt_lastblock, "lastblock=%u"},
390 {Opt_anchor, "anchor=%u"},
391 {Opt_volume, "volume=%u"},
392 {Opt_partition, "partition=%u"},
393 {Opt_fileset, "fileset=%u"},
394 {Opt_rootdir, "rootdir=%u"},
396 {Opt_iocharset, "iocharset=%s"},
397 {Opt_fmode, "mode=%o"},
398 {Opt_dmode, "dmode=%o"},
402 static int udf_parse_options(char *options, struct udf_options *uopt,
409 uopt->partition = 0xFFFF;
410 uopt->session = 0xFFFFFFFF;
413 uopt->volume = 0xFFFFFFFF;
414 uopt->rootdir = 0xFFFFFFFF;
415 uopt->fileset = 0xFFFFFFFF;
416 uopt->nls_map = NULL;
421 while ((p = strsep(&options, ",")) != NULL) {
422 substring_t args[MAX_OPT_ARGS];
427 token = match_token(p, tokens, args);
433 if (match_int(&args[0], &option))
435 uopt->blocksize = option;
436 uopt->flags |= (1 << UDF_FLAG_BLOCKSIZE_SET);
439 uopt->flags |= (1 << UDF_FLAG_UNHIDE);
442 uopt->flags |= (1 << UDF_FLAG_UNDELETE);
445 uopt->flags &= ~(1 << UDF_FLAG_USE_AD_IN_ICB);
448 uopt->flags |= (1 << UDF_FLAG_USE_AD_IN_ICB);
451 uopt->flags |= (1 << UDF_FLAG_USE_SHORT_AD);
454 uopt->flags &= ~(1 << UDF_FLAG_USE_SHORT_AD);
457 if (match_int(args, &option))
460 uopt->flags |= (1 << UDF_FLAG_GID_SET);
463 if (match_int(args, &option))
466 uopt->flags |= (1 << UDF_FLAG_UID_SET);
469 if (match_octal(args, &option))
471 uopt->umask = option;
474 uopt->flags &= ~(1 << UDF_FLAG_STRICT);
477 if (match_int(args, &option))
479 uopt->session = option;
481 uopt->flags |= (1 << UDF_FLAG_SESSION_SET);
484 if (match_int(args, &option))
486 uopt->lastblock = option;
488 uopt->flags |= (1 << UDF_FLAG_LASTBLOCK_SET);
491 if (match_int(args, &option))
493 uopt->anchor = option;
496 if (match_int(args, &option))
498 uopt->volume = option;
501 if (match_int(args, &option))
503 uopt->partition = option;
506 if (match_int(args, &option))
508 uopt->fileset = option;
511 if (match_int(args, &option))
513 uopt->rootdir = option;
516 uopt->flags |= (1 << UDF_FLAG_UTF8);
518 #ifdef CONFIG_UDF_NLS
520 uopt->nls_map = load_nls(args[0].from);
521 uopt->flags |= (1 << UDF_FLAG_NLS_MAP);
525 uopt->flags |= (1 << UDF_FLAG_UID_IGNORE);
528 uopt->flags |= (1 << UDF_FLAG_UID_FORGET);
531 uopt->flags |= (1 << UDF_FLAG_GID_IGNORE);
534 uopt->flags |= (1 << UDF_FLAG_GID_FORGET);
537 if (match_octal(args, &option))
539 uopt->fmode = option & 0777;
542 if (match_octal(args, &option))
544 uopt->dmode = option & 0777;
547 pr_err("bad mount option \"%s\" 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))
570 write_lock(&sbi->s_cred_lock);
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;
577 write_unlock(&sbi->s_cred_lock);
579 if (sbi->s_lvid_bh) {
580 int write_rev = le16_to_cpu(udf_sb_lvidiu(sbi)->minUDFWriteRev);
581 if (write_rev > UDF_MAX_WRITE_VERSION)
585 if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
588 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 found\n");
644 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
647 udf_debug("ISO9660 Volume Partition Descriptor found\n");
650 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
653 udf_debug("ISO9660 VRS (%u) found\n",
657 } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BEA01,
660 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_TEA01,
664 } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR02,
667 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR03,
677 else if (sector - (sbi->s_session << sb->s_blocksize_bits) == 32768)
683 static int udf_find_fileset(struct super_block *sb,
684 struct kernel_lb_addr *fileset,
685 struct kernel_lb_addr *root)
687 struct buffer_head *bh = NULL;
690 struct udf_sb_info *sbi;
692 if (fileset->logicalBlockNum != 0xFFFFFFFF ||
693 fileset->partitionReferenceNum != 0xFFFF) {
694 bh = udf_read_ptagged(sb, fileset, 0, &ident);
698 } else if (ident != TAG_IDENT_FSD) {
707 /* Search backwards through the partitions */
708 struct kernel_lb_addr newfileset;
710 /* --> cvg: FIXME - is it reasonable? */
713 for (newfileset.partitionReferenceNum = sbi->s_partitions - 1;
714 (newfileset.partitionReferenceNum != 0xFFFF &&
715 fileset->logicalBlockNum == 0xFFFFFFFF &&
716 fileset->partitionReferenceNum == 0xFFFF);
717 newfileset.partitionReferenceNum--) {
718 lastblock = sbi->s_partmaps
719 [newfileset.partitionReferenceNum]
721 newfileset.logicalBlockNum = 0;
724 bh = udf_read_ptagged(sb, &newfileset, 0,
727 newfileset.logicalBlockNum++;
734 struct spaceBitmapDesc *sp;
735 sp = (struct spaceBitmapDesc *)
737 newfileset.logicalBlockNum += 1 +
738 ((le32_to_cpu(sp->numOfBytes) +
739 sizeof(struct spaceBitmapDesc)
740 - 1) >> sb->s_blocksize_bits);
745 *fileset = newfileset;
748 newfileset.logicalBlockNum++;
753 } while (newfileset.logicalBlockNum < lastblock &&
754 fileset->logicalBlockNum == 0xFFFFFFFF &&
755 fileset->partitionReferenceNum == 0xFFFF);
759 if ((fileset->logicalBlockNum != 0xFFFFFFFF ||
760 fileset->partitionReferenceNum != 0xFFFF) && bh) {
761 udf_debug("Fileset at block=%d, partition=%d\n",
762 fileset->logicalBlockNum,
763 fileset->partitionReferenceNum);
765 sbi->s_partition = fileset->partitionReferenceNum;
766 udf_load_fileset(sb, bh, root);
773 static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
775 struct primaryVolDesc *pvoldesc;
776 struct ustr *instr, *outstr;
777 struct buffer_head *bh;
781 instr = kmalloc(sizeof(struct ustr), GFP_NOFS);
785 outstr = kmalloc(sizeof(struct ustr), GFP_NOFS);
789 bh = udf_read_tagged(sb, block, block, &ident);
793 BUG_ON(ident != TAG_IDENT_PVD);
795 pvoldesc = (struct primaryVolDesc *)bh->b_data;
797 if (udf_disk_stamp_to_time(&UDF_SB(sb)->s_record_time,
798 pvoldesc->recordingDateAndTime)) {
800 struct timestamp *ts = &pvoldesc->recordingDateAndTime;
801 udf_debug("recording time %04u/%02u/%02u %02u:%02u (%x)\n",
802 le16_to_cpu(ts->year), ts->month, ts->day, ts->hour,
803 ts->minute, le16_to_cpu(ts->typeAndTimezone));
807 if (!udf_build_ustr(instr, pvoldesc->volIdent, 32))
808 if (udf_CS0toUTF8(outstr, instr)) {
809 strncpy(UDF_SB(sb)->s_volume_ident, outstr->u_name,
810 outstr->u_len > 31 ? 31 : outstr->u_len);
811 udf_debug("volIdent[] = '%s'\n",
812 UDF_SB(sb)->s_volume_ident);
815 if (!udf_build_ustr(instr, pvoldesc->volSetIdent, 128))
816 if (udf_CS0toUTF8(outstr, instr))
817 udf_debug("volSetIdent[] = '%s'\n", outstr->u_name);
828 struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
829 u32 meta_file_loc, u32 partition_num)
831 struct kernel_lb_addr addr;
832 struct inode *metadata_fe;
834 addr.logicalBlockNum = meta_file_loc;
835 addr.partitionReferenceNum = partition_num;
837 metadata_fe = udf_iget(sb, &addr);
839 if (metadata_fe == NULL)
840 udf_warn(sb, "metadata inode efe not found\n");
841 else if (UDF_I(metadata_fe)->i_alloc_type != ICBTAG_FLAG_AD_SHORT) {
842 udf_warn(sb, "metadata inode efe does not have short allocation descriptors!\n");
850 static int udf_load_metadata_files(struct super_block *sb, int partition)
852 struct udf_sb_info *sbi = UDF_SB(sb);
853 struct udf_part_map *map;
854 struct udf_meta_data *mdata;
855 struct kernel_lb_addr addr;
857 map = &sbi->s_partmaps[partition];
858 mdata = &map->s_type_specific.s_metadata;
860 /* metadata address */
861 udf_debug("Metadata file location: block = %d part = %d\n",
862 mdata->s_meta_file_loc, map->s_partition_num);
864 mdata->s_metadata_fe = udf_find_metadata_inode_efe(sb,
865 mdata->s_meta_file_loc, map->s_partition_num);
867 if (mdata->s_metadata_fe == NULL) {
868 /* mirror file entry */
869 udf_debug("Mirror metadata file location: block = %d part = %d\n",
870 mdata->s_mirror_file_loc, map->s_partition_num);
872 mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb,
873 mdata->s_mirror_file_loc, map->s_partition_num);
875 if (mdata->s_mirror_fe == NULL) {
876 udf_err(sb, "Both metadata and mirror metadata inode efe can not found\n");
884 * Load only if bitmap file location differs from 0xFFFFFFFF (DCN-5102)
886 if (mdata->s_bitmap_file_loc != 0xFFFFFFFF) {
887 addr.logicalBlockNum = mdata->s_bitmap_file_loc;
888 addr.partitionReferenceNum = map->s_partition_num;
890 udf_debug("Bitmap file location: block = %d part = %d\n",
891 addr.logicalBlockNum, addr.partitionReferenceNum);
893 mdata->s_bitmap_fe = udf_iget(sb, &addr);
895 if (mdata->s_bitmap_fe == NULL) {
896 if (sb->s_flags & MS_RDONLY)
897 udf_warn(sb, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n");
899 udf_err(sb, "bitmap inode efe not found and attempted read-write mount\n");
905 udf_debug("udf_load_metadata_files Ok\n");
913 static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
914 struct kernel_lb_addr *root)
916 struct fileSetDesc *fset;
918 fset = (struct fileSetDesc *)bh->b_data;
920 *root = lelb_to_cpu(fset->rootDirectoryICB.extLocation);
922 UDF_SB(sb)->s_serial_number = le16_to_cpu(fset->descTag.tagSerialNum);
924 udf_debug("Rootdir at block=%d, partition=%d\n",
925 root->logicalBlockNum, root->partitionReferenceNum);
928 int udf_compute_nr_groups(struct super_block *sb, u32 partition)
930 struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
931 return DIV_ROUND_UP(map->s_partition_len +
932 (sizeof(struct spaceBitmapDesc) << 3),
933 sb->s_blocksize * 8);
936 static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
938 struct udf_bitmap *bitmap;
942 nr_groups = udf_compute_nr_groups(sb, index);
943 size = sizeof(struct udf_bitmap) +
944 (sizeof(struct buffer_head *) * nr_groups);
946 if (size <= PAGE_SIZE)
947 bitmap = kzalloc(size, GFP_KERNEL);
949 bitmap = vzalloc(size); /* TODO: get rid of vzalloc */
951 if (bitmap == NULL) {
952 udf_err(sb, "Unable to allocate space for bitmap and %d buffer_head pointers\n",
957 bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1);
958 bitmap->s_nr_groups = nr_groups;
962 static int udf_fill_partdesc_info(struct super_block *sb,
963 struct partitionDesc *p, int p_index)
965 struct udf_part_map *map;
966 struct udf_sb_info *sbi = UDF_SB(sb);
967 struct partitionHeaderDesc *phd;
969 map = &sbi->s_partmaps[p_index];
971 map->s_partition_len = le32_to_cpu(p->partitionLength); /* blocks */
972 map->s_partition_root = le32_to_cpu(p->partitionStartingLocation);
974 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
975 map->s_partition_flags |= UDF_PART_FLAG_READ_ONLY;
976 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
977 map->s_partition_flags |= UDF_PART_FLAG_WRITE_ONCE;
978 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
979 map->s_partition_flags |= UDF_PART_FLAG_REWRITABLE;
980 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
981 map->s_partition_flags |= UDF_PART_FLAG_OVERWRITABLE;
983 udf_debug("Partition (%d type %x) starts at physical %d, block length %d\n",
984 p_index, map->s_partition_type,
985 map->s_partition_root, map->s_partition_len);
987 if (strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR02) &&
988 strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR03))
991 phd = (struct partitionHeaderDesc *)p->partitionContentsUse;
992 if (phd->unallocSpaceTable.extLength) {
993 struct kernel_lb_addr loc = {
994 .logicalBlockNum = le32_to_cpu(
995 phd->unallocSpaceTable.extPosition),
996 .partitionReferenceNum = p_index,
999 map->s_uspace.s_table = udf_iget(sb, &loc);
1000 if (!map->s_uspace.s_table) {
1001 udf_debug("cannot load unallocSpaceTable (part %d)\n",
1005 map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_TABLE;
1006 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1007 p_index, map->s_uspace.s_table->i_ino);
1010 if (phd->unallocSpaceBitmap.extLength) {
1011 struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index);
1014 map->s_uspace.s_bitmap = bitmap;
1015 bitmap->s_extLength = le32_to_cpu(
1016 phd->unallocSpaceBitmap.extLength);
1017 bitmap->s_extPosition = le32_to_cpu(
1018 phd->unallocSpaceBitmap.extPosition);
1019 map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
1020 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
1021 p_index, bitmap->s_extPosition);
1024 if (phd->partitionIntegrityTable.extLength)
1025 udf_debug("partitionIntegrityTable (part %d)\n", p_index);
1027 if (phd->freedSpaceTable.extLength) {
1028 struct kernel_lb_addr loc = {
1029 .logicalBlockNum = le32_to_cpu(
1030 phd->freedSpaceTable.extPosition),
1031 .partitionReferenceNum = p_index,
1034 map->s_fspace.s_table = udf_iget(sb, &loc);
1035 if (!map->s_fspace.s_table) {
1036 udf_debug("cannot load freedSpaceTable (part %d)\n",
1041 map->s_partition_flags |= UDF_PART_FLAG_FREED_TABLE;
1042 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1043 p_index, map->s_fspace.s_table->i_ino);
1046 if (phd->freedSpaceBitmap.extLength) {
1047 struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index);
1050 map->s_fspace.s_bitmap = bitmap;
1051 bitmap->s_extLength = le32_to_cpu(
1052 phd->freedSpaceBitmap.extLength);
1053 bitmap->s_extPosition = le32_to_cpu(
1054 phd->freedSpaceBitmap.extPosition);
1055 map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
1056 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1057 p_index, bitmap->s_extPosition);
1062 static void udf_find_vat_block(struct super_block *sb, int p_index,
1063 int type1_index, sector_t start_block)
1065 struct udf_sb_info *sbi = UDF_SB(sb);
1066 struct udf_part_map *map = &sbi->s_partmaps[p_index];
1068 struct kernel_lb_addr ino;
1071 * VAT file entry is in the last recorded block. Some broken disks have
1072 * it a few blocks before so try a bit harder...
1074 ino.partitionReferenceNum = type1_index;
1075 for (vat_block = start_block;
1076 vat_block >= map->s_partition_root &&
1077 vat_block >= start_block - 3 &&
1078 !sbi->s_vat_inode; vat_block--) {
1079 ino.logicalBlockNum = vat_block - map->s_partition_root;
1080 sbi->s_vat_inode = udf_iget(sb, &ino);
1084 static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
1086 struct udf_sb_info *sbi = UDF_SB(sb);
1087 struct udf_part_map *map = &sbi->s_partmaps[p_index];
1088 struct buffer_head *bh = NULL;
1089 struct udf_inode_info *vati;
1091 struct virtualAllocationTable20 *vat20;
1092 sector_t blocks = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
1094 udf_find_vat_block(sb, p_index, type1_index, sbi->s_last_block);
1095 if (!sbi->s_vat_inode &&
1096 sbi->s_last_block != blocks - 1) {
1097 pr_notice("Failed to read VAT inode from the last recorded block (%lu), retrying with the last block of the device (%lu).\n",
1098 (unsigned long)sbi->s_last_block,
1099 (unsigned long)blocks - 1);
1100 udf_find_vat_block(sb, p_index, type1_index, blocks - 1);
1102 if (!sbi->s_vat_inode)
1105 if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
1106 map->s_type_specific.s_virtual.s_start_offset = 0;
1107 map->s_type_specific.s_virtual.s_num_entries =
1108 (sbi->s_vat_inode->i_size - 36) >> 2;
1109 } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
1110 vati = UDF_I(sbi->s_vat_inode);
1111 if (vati->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
1112 pos = udf_block_map(sbi->s_vat_inode, 0);
1113 bh = sb_bread(sb, pos);
1116 vat20 = (struct virtualAllocationTable20 *)bh->b_data;
1118 vat20 = (struct virtualAllocationTable20 *)
1122 map->s_type_specific.s_virtual.s_start_offset =
1123 le16_to_cpu(vat20->lengthHeader);
1124 map->s_type_specific.s_virtual.s_num_entries =
1125 (sbi->s_vat_inode->i_size -
1126 map->s_type_specific.s_virtual.
1127 s_start_offset) >> 2;
1133 static int udf_load_partdesc(struct super_block *sb, sector_t block)
1135 struct buffer_head *bh;
1136 struct partitionDesc *p;
1137 struct udf_part_map *map;
1138 struct udf_sb_info *sbi = UDF_SB(sb);
1140 uint16_t partitionNumber;
1144 bh = udf_read_tagged(sb, block, block, &ident);
1147 if (ident != TAG_IDENT_PD)
1150 p = (struct partitionDesc *)bh->b_data;
1151 partitionNumber = le16_to_cpu(p->partitionNumber);
1153 /* First scan for TYPE1, SPARABLE and METADATA partitions */
1154 for (i = 0; i < sbi->s_partitions; i++) {
1155 map = &sbi->s_partmaps[i];
1156 udf_debug("Searching map: (%d == %d)\n",
1157 map->s_partition_num, partitionNumber);
1158 if (map->s_partition_num == partitionNumber &&
1159 (map->s_partition_type == UDF_TYPE1_MAP15 ||
1160 map->s_partition_type == UDF_SPARABLE_MAP15))
1164 if (i >= sbi->s_partitions) {
1165 udf_debug("Partition (%d) not found in partition map\n",
1170 ret = udf_fill_partdesc_info(sb, p, i);
1173 * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and
1174 * PHYSICAL partitions are already set up
1177 for (i = 0; i < sbi->s_partitions; i++) {
1178 map = &sbi->s_partmaps[i];
1180 if (map->s_partition_num == partitionNumber &&
1181 (map->s_partition_type == UDF_VIRTUAL_MAP15 ||
1182 map->s_partition_type == UDF_VIRTUAL_MAP20 ||
1183 map->s_partition_type == UDF_METADATA_MAP25))
1187 if (i >= sbi->s_partitions)
1190 ret = udf_fill_partdesc_info(sb, p, i);
1194 if (map->s_partition_type == UDF_METADATA_MAP25) {
1195 ret = udf_load_metadata_files(sb, i);
1197 udf_err(sb, "error loading MetaData partition map %d\n",
1202 ret = udf_load_vat(sb, i, type1_idx);
1206 * Mark filesystem read-only if we have a partition with
1207 * virtual map since we don't handle writing to it (we
1208 * overwrite blocks instead of relocating them).
1210 sb->s_flags |= MS_RDONLY;
1211 pr_notice("Filesystem marked read-only because writing to pseudooverwrite partition is not implemented\n");
1214 /* In case loading failed, we handle cleanup in udf_fill_super */
1219 static int udf_load_logicalvol(struct super_block *sb, sector_t block,
1220 struct kernel_lb_addr *fileset)
1222 struct logicalVolDesc *lvd;
1225 struct udf_sb_info *sbi = UDF_SB(sb);
1226 struct genericPartitionMap *gpm;
1228 struct buffer_head *bh;
1231 bh = udf_read_tagged(sb, block, block, &ident);
1234 BUG_ON(ident != TAG_IDENT_LVD);
1235 lvd = (struct logicalVolDesc *)bh->b_data;
1237 i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
1243 for (i = 0, offset = 0;
1244 i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength);
1245 i++, offset += gpm->partitionMapLength) {
1246 struct udf_part_map *map = &sbi->s_partmaps[i];
1247 gpm = (struct genericPartitionMap *)
1248 &(lvd->partitionMaps[offset]);
1249 type = gpm->partitionMapType;
1251 struct genericPartitionMap1 *gpm1 =
1252 (struct genericPartitionMap1 *)gpm;
1253 map->s_partition_type = UDF_TYPE1_MAP15;
1254 map->s_volumeseqnum = le16_to_cpu(gpm1->volSeqNum);
1255 map->s_partition_num = le16_to_cpu(gpm1->partitionNum);
1256 map->s_partition_func = NULL;
1257 } else if (type == 2) {
1258 struct udfPartitionMap2 *upm2 =
1259 (struct udfPartitionMap2 *)gpm;
1260 if (!strncmp(upm2->partIdent.ident, UDF_ID_VIRTUAL,
1261 strlen(UDF_ID_VIRTUAL))) {
1263 le16_to_cpu(((__le16 *)upm2->partIdent.
1266 map->s_partition_type =
1268 map->s_partition_func =
1269 udf_get_pblock_virt15;
1271 map->s_partition_type =
1273 map->s_partition_func =
1274 udf_get_pblock_virt20;
1276 } else if (!strncmp(upm2->partIdent.ident,
1278 strlen(UDF_ID_SPARABLE))) {
1280 struct sparingTable *st;
1281 struct sparablePartitionMap *spm =
1282 (struct sparablePartitionMap *)gpm;
1284 map->s_partition_type = UDF_SPARABLE_MAP15;
1285 map->s_type_specific.s_sparing.s_packet_len =
1286 le16_to_cpu(spm->packetLength);
1287 for (j = 0; j < spm->numSparingTables; j++) {
1288 struct buffer_head *bh2;
1291 spm->locSparingTable[j]);
1292 bh2 = udf_read_tagged(sb, loc, loc,
1294 map->s_type_specific.s_sparing.
1295 s_spar_map[j] = bh2;
1300 st = (struct sparingTable *)bh2->b_data;
1301 if (ident != 0 || strncmp(
1302 st->sparingIdent.ident,
1304 strlen(UDF_ID_SPARING))) {
1306 map->s_type_specific.s_sparing.
1307 s_spar_map[j] = NULL;
1310 map->s_partition_func = udf_get_pblock_spar15;
1311 } else if (!strncmp(upm2->partIdent.ident,
1313 strlen(UDF_ID_METADATA))) {
1314 struct udf_meta_data *mdata =
1315 &map->s_type_specific.s_metadata;
1316 struct metadataPartitionMap *mdm =
1317 (struct metadataPartitionMap *)
1318 &(lvd->partitionMaps[offset]);
1319 udf_debug("Parsing Logical vol part %d type %d id=%s\n",
1320 i, type, UDF_ID_METADATA);
1322 map->s_partition_type = UDF_METADATA_MAP25;
1323 map->s_partition_func = udf_get_pblock_meta25;
1325 mdata->s_meta_file_loc =
1326 le32_to_cpu(mdm->metadataFileLoc);
1327 mdata->s_mirror_file_loc =
1328 le32_to_cpu(mdm->metadataMirrorFileLoc);
1329 mdata->s_bitmap_file_loc =
1330 le32_to_cpu(mdm->metadataBitmapFileLoc);
1331 mdata->s_alloc_unit_size =
1332 le32_to_cpu(mdm->allocUnitSize);
1333 mdata->s_align_unit_size =
1334 le16_to_cpu(mdm->alignUnitSize);
1335 if (mdm->flags & 0x01)
1336 mdata->s_flags |= MF_DUPLICATE_MD;
1338 udf_debug("Metadata Ident suffix=0x%x\n",
1339 le16_to_cpu(*(__le16 *)
1340 mdm->partIdent.identSuffix));
1341 udf_debug("Metadata part num=%d\n",
1342 le16_to_cpu(mdm->partitionNum));
1343 udf_debug("Metadata part alloc unit size=%d\n",
1344 le32_to_cpu(mdm->allocUnitSize));
1345 udf_debug("Metadata file loc=%d\n",
1346 le32_to_cpu(mdm->metadataFileLoc));
1347 udf_debug("Mirror file loc=%d\n",
1348 le32_to_cpu(mdm->metadataMirrorFileLoc));
1349 udf_debug("Bitmap file loc=%d\n",
1350 le32_to_cpu(mdm->metadataBitmapFileLoc));
1351 udf_debug("Flags: %d %d\n",
1352 mdata->s_flags, mdm->flags);
1354 udf_debug("Unknown ident: %s\n",
1355 upm2->partIdent.ident);
1358 map->s_volumeseqnum = le16_to_cpu(upm2->volSeqNum);
1359 map->s_partition_num = le16_to_cpu(upm2->partitionNum);
1361 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1362 i, map->s_partition_num, type, map->s_volumeseqnum);
1366 struct long_ad *la = (struct long_ad *)&(lvd->logicalVolContentsUse[0]);
1368 *fileset = lelb_to_cpu(la->extLocation);
1369 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1370 fileset->logicalBlockNum,
1371 fileset->partitionReferenceNum);
1373 if (lvd->integritySeqExt.extLength)
1374 udf_load_logicalvolint(sb, leea_to_cpu(lvd->integritySeqExt));
1382 * udf_load_logicalvolint
1385 static void udf_load_logicalvolint(struct super_block *sb, struct kernel_extent_ad loc)
1387 struct buffer_head *bh = NULL;
1389 struct udf_sb_info *sbi = UDF_SB(sb);
1390 struct logicalVolIntegrityDesc *lvid;
1392 while (loc.extLength > 0 &&
1393 (bh = udf_read_tagged(sb, loc.extLocation,
1394 loc.extLocation, &ident)) &&
1395 ident == TAG_IDENT_LVID) {
1396 sbi->s_lvid_bh = bh;
1397 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1399 if (lvid->nextIntegrityExt.extLength)
1400 udf_load_logicalvolint(sb,
1401 leea_to_cpu(lvid->nextIntegrityExt));
1403 if (sbi->s_lvid_bh != bh)
1405 loc.extLength -= sb->s_blocksize;
1408 if (sbi->s_lvid_bh != bh)
1413 * udf_process_sequence
1416 * Process a main/reserve volume descriptor sequence.
1419 * sb Pointer to _locked_ superblock.
1420 * block First block of first extent of the sequence.
1421 * lastblock Lastblock of first extent of the sequence.
1424 * July 1, 1997 - Andrew E. Mileski
1425 * Written, tested, and released.
1427 static noinline int udf_process_sequence(struct super_block *sb, long block,
1428 long lastblock, struct kernel_lb_addr *fileset)
1430 struct buffer_head *bh = NULL;
1431 struct udf_vds_record vds[VDS_POS_LENGTH];
1432 struct udf_vds_record *curr;
1433 struct generic_desc *gd;
1434 struct volDescPtr *vdp;
1438 long next_s = 0, next_e = 0;
1440 memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH);
1443 * Read the main descriptor sequence and find which descriptors
1446 for (; (!done && block <= lastblock); block++) {
1448 bh = udf_read_tagged(sb, block, block, &ident);
1451 "Block %llu of volume descriptor sequence is corrupted or we could not read it\n",
1452 (unsigned long long)block);
1456 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1457 gd = (struct generic_desc *)bh->b_data;
1458 vdsn = le32_to_cpu(gd->volDescSeqNum);
1460 case TAG_IDENT_PVD: /* ISO 13346 3/10.1 */
1461 curr = &vds[VDS_POS_PRIMARY_VOL_DESC];
1462 if (vdsn >= curr->volDescSeqNum) {
1463 curr->volDescSeqNum = vdsn;
1464 curr->block = block;
1467 case TAG_IDENT_VDP: /* ISO 13346 3/10.3 */
1468 curr = &vds[VDS_POS_VOL_DESC_PTR];
1469 if (vdsn >= curr->volDescSeqNum) {
1470 curr->volDescSeqNum = vdsn;
1471 curr->block = block;
1473 vdp = (struct volDescPtr *)bh->b_data;
1474 next_s = le32_to_cpu(
1475 vdp->nextVolDescSeqExt.extLocation);
1476 next_e = le32_to_cpu(
1477 vdp->nextVolDescSeqExt.extLength);
1478 next_e = next_e >> sb->s_blocksize_bits;
1482 case TAG_IDENT_IUVD: /* ISO 13346 3/10.4 */
1483 curr = &vds[VDS_POS_IMP_USE_VOL_DESC];
1484 if (vdsn >= curr->volDescSeqNum) {
1485 curr->volDescSeqNum = vdsn;
1486 curr->block = block;
1489 case TAG_IDENT_PD: /* ISO 13346 3/10.5 */
1490 curr = &vds[VDS_POS_PARTITION_DESC];
1492 curr->block = block;
1494 case TAG_IDENT_LVD: /* ISO 13346 3/10.6 */
1495 curr = &vds[VDS_POS_LOGICAL_VOL_DESC];
1496 if (vdsn >= curr->volDescSeqNum) {
1497 curr->volDescSeqNum = vdsn;
1498 curr->block = block;
1501 case TAG_IDENT_USD: /* ISO 13346 3/10.8 */
1502 curr = &vds[VDS_POS_UNALLOC_SPACE_DESC];
1503 if (vdsn >= curr->volDescSeqNum) {
1504 curr->volDescSeqNum = vdsn;
1505 curr->block = block;
1508 case TAG_IDENT_TD: /* ISO 13346 3/10.9 */
1509 vds[VDS_POS_TERMINATING_DESC].block = block;
1513 next_s = next_e = 0;
1521 * Now read interesting descriptors again and process them
1522 * in a suitable order
1524 if (!vds[VDS_POS_PRIMARY_VOL_DESC].block) {
1525 udf_err(sb, "Primary Volume Descriptor not found!\n");
1528 if (udf_load_pvoldesc(sb, vds[VDS_POS_PRIMARY_VOL_DESC].block))
1531 if (vds[VDS_POS_LOGICAL_VOL_DESC].block && udf_load_logicalvol(sb,
1532 vds[VDS_POS_LOGICAL_VOL_DESC].block, fileset))
1535 if (vds[VDS_POS_PARTITION_DESC].block) {
1537 * We rescan the whole descriptor sequence to find
1538 * partition descriptor blocks and process them.
1540 for (block = vds[VDS_POS_PARTITION_DESC].block;
1541 block < vds[VDS_POS_TERMINATING_DESC].block;
1543 if (udf_load_partdesc(sb, block))
1550 static int udf_load_sequence(struct super_block *sb, struct buffer_head *bh,
1551 struct kernel_lb_addr *fileset)
1553 struct anchorVolDescPtr *anchor;
1554 long main_s, main_e, reserve_s, reserve_e;
1556 anchor = (struct anchorVolDescPtr *)bh->b_data;
1558 /* Locate the main sequence */
1559 main_s = le32_to_cpu(anchor->mainVolDescSeqExt.extLocation);
1560 main_e = le32_to_cpu(anchor->mainVolDescSeqExt.extLength);
1561 main_e = main_e >> sb->s_blocksize_bits;
1564 /* Locate the reserve sequence */
1565 reserve_s = le32_to_cpu(anchor->reserveVolDescSeqExt.extLocation);
1566 reserve_e = le32_to_cpu(anchor->reserveVolDescSeqExt.extLength);
1567 reserve_e = reserve_e >> sb->s_blocksize_bits;
1568 reserve_e += reserve_s;
1570 /* Process the main & reserve sequences */
1571 /* responsible for finding the PartitionDesc(s) */
1572 if (!udf_process_sequence(sb, main_s, main_e, fileset))
1574 return !udf_process_sequence(sb, reserve_s, reserve_e, fileset);
1578 * Check whether there is an anchor block in the given block and
1579 * load Volume Descriptor Sequence if so.
1581 static int udf_check_anchor_block(struct super_block *sb, sector_t block,
1582 struct kernel_lb_addr *fileset)
1584 struct buffer_head *bh;
1588 if (UDF_QUERY_FLAG(sb, UDF_FLAG_VARCONV) &&
1589 udf_fixed_to_variable(block) >=
1590 sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits)
1593 bh = udf_read_tagged(sb, block, block, &ident);
1596 if (ident != TAG_IDENT_AVDP) {
1600 ret = udf_load_sequence(sb, bh, fileset);
1605 /* Search for an anchor volume descriptor pointer */
1606 static sector_t udf_scan_anchors(struct super_block *sb, sector_t lastblock,
1607 struct kernel_lb_addr *fileset)
1611 struct udf_sb_info *sbi = UDF_SB(sb);
1614 /* First try user provided anchor */
1615 if (sbi->s_anchor) {
1616 if (udf_check_anchor_block(sb, sbi->s_anchor, fileset))
1620 * according to spec, anchor is in either:
1624 * however, if the disc isn't closed, it could be 512.
1626 if (udf_check_anchor_block(sb, sbi->s_session + 256, fileset))
1629 * The trouble is which block is the last one. Drives often misreport
1630 * this so we try various possibilities.
1632 last[last_count++] = lastblock;
1634 last[last_count++] = lastblock - 1;
1635 last[last_count++] = lastblock + 1;
1637 last[last_count++] = lastblock - 2;
1638 if (lastblock >= 150)
1639 last[last_count++] = lastblock - 150;
1640 if (lastblock >= 152)
1641 last[last_count++] = lastblock - 152;
1643 for (i = 0; i < last_count; i++) {
1644 if (last[i] >= sb->s_bdev->bd_inode->i_size >>
1645 sb->s_blocksize_bits)
1647 if (udf_check_anchor_block(sb, last[i], fileset))
1651 if (udf_check_anchor_block(sb, last[i] - 256, fileset))
1655 /* Finally try block 512 in case media is open */
1656 if (udf_check_anchor_block(sb, sbi->s_session + 512, fileset))
1662 * Find an anchor volume descriptor and load Volume Descriptor Sequence from
1663 * area specified by it. The function expects sbi->s_lastblock to be the last
1664 * block on the media.
1666 * Return 1 if ok, 0 if not found.
1669 static int udf_find_anchor(struct super_block *sb,
1670 struct kernel_lb_addr *fileset)
1673 struct udf_sb_info *sbi = UDF_SB(sb);
1675 lastblock = udf_scan_anchors(sb, sbi->s_last_block, fileset);
1679 /* No anchor found? Try VARCONV conversion of block numbers */
1680 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
1681 /* Firstly, we try to not convert number of the last block */
1682 lastblock = udf_scan_anchors(sb,
1683 udf_variable_to_fixed(sbi->s_last_block),
1688 /* Secondly, we try with converted number of the last block */
1689 lastblock = udf_scan_anchors(sb, sbi->s_last_block, fileset);
1691 /* VARCONV didn't help. Clear it. */
1692 UDF_CLEAR_FLAG(sb, UDF_FLAG_VARCONV);
1696 sbi->s_last_block = lastblock;
1701 * Check Volume Structure Descriptor, find Anchor block and load Volume
1702 * Descriptor Sequence
1704 static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt,
1705 int silent, struct kernel_lb_addr *fileset)
1707 struct udf_sb_info *sbi = UDF_SB(sb);
1710 if (!sb_set_blocksize(sb, uopt->blocksize)) {
1712 udf_warn(sb, "Bad block size\n");
1715 sbi->s_last_block = uopt->lastblock;
1717 /* Check that it is NSR02 compliant */
1718 nsr_off = udf_check_vsd(sb);
1721 udf_warn(sb, "No VRS found\n");
1725 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1726 if (!sbi->s_last_block)
1727 sbi->s_last_block = udf_get_last_block(sb);
1729 udf_debug("Validity check skipped because of novrs option\n");
1732 /* Look for anchor block and load Volume Descriptor Sequence */
1733 sbi->s_anchor = uopt->anchor;
1734 if (!udf_find_anchor(sb, fileset)) {
1736 udf_warn(sb, "No anchor found\n");
1742 static void udf_open_lvid(struct super_block *sb)
1744 struct udf_sb_info *sbi = UDF_SB(sb);
1745 struct buffer_head *bh = sbi->s_lvid_bh;
1746 struct logicalVolIntegrityDesc *lvid;
1747 struct logicalVolIntegrityDescImpUse *lvidiu;
1752 mutex_lock(&sbi->s_alloc_mutex);
1753 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1754 lvidiu = udf_sb_lvidiu(sbi);
1756 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1757 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1758 udf_time_to_disk_stamp(&lvid->recordingDateAndTime,
1760 lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN);
1762 lvid->descTag.descCRC = cpu_to_le16(
1763 crc_itu_t(0, (char *)lvid + sizeof(struct tag),
1764 le16_to_cpu(lvid->descTag.descCRCLength)));
1766 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
1767 mark_buffer_dirty(bh);
1768 sbi->s_lvid_dirty = 0;
1769 mutex_unlock(&sbi->s_alloc_mutex);
1772 static void udf_close_lvid(struct super_block *sb)
1774 struct udf_sb_info *sbi = UDF_SB(sb);
1775 struct buffer_head *bh = sbi->s_lvid_bh;
1776 struct logicalVolIntegrityDesc *lvid;
1777 struct logicalVolIntegrityDescImpUse *lvidiu;
1782 mutex_lock(&sbi->s_alloc_mutex);
1783 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1784 lvidiu = udf_sb_lvidiu(sbi);
1785 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1786 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1787 udf_time_to_disk_stamp(&lvid->recordingDateAndTime, CURRENT_TIME);
1788 if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
1789 lvidiu->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
1790 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
1791 lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
1792 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
1793 lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
1794 lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
1796 lvid->descTag.descCRC = cpu_to_le16(
1797 crc_itu_t(0, (char *)lvid + sizeof(struct tag),
1798 le16_to_cpu(lvid->descTag.descCRCLength)));
1800 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
1801 mark_buffer_dirty(bh);
1802 sbi->s_lvid_dirty = 0;
1803 mutex_unlock(&sbi->s_alloc_mutex);
1806 u64 lvid_get_unique_id(struct super_block *sb)
1808 struct buffer_head *bh;
1809 struct udf_sb_info *sbi = UDF_SB(sb);
1810 struct logicalVolIntegrityDesc *lvid;
1811 struct logicalVolHeaderDesc *lvhd;
1815 bh = sbi->s_lvid_bh;
1819 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1820 lvhd = (struct logicalVolHeaderDesc *)lvid->logicalVolContentsUse;
1822 mutex_lock(&sbi->s_alloc_mutex);
1823 ret = uniqueID = le64_to_cpu(lvhd->uniqueID);
1824 if (!(++uniqueID & 0xFFFFFFFF))
1826 lvhd->uniqueID = cpu_to_le64(uniqueID);
1827 mutex_unlock(&sbi->s_alloc_mutex);
1828 mark_buffer_dirty(bh);
1833 static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
1836 int nr_groups = bitmap->s_nr_groups;
1837 int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) *
1840 for (i = 0; i < nr_groups; i++)
1841 if (bitmap->s_block_bitmap[i])
1842 brelse(bitmap->s_block_bitmap[i]);
1844 if (size <= PAGE_SIZE)
1850 static void udf_free_partition(struct udf_part_map *map)
1853 struct udf_meta_data *mdata;
1855 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
1856 iput(map->s_uspace.s_table);
1857 if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
1858 iput(map->s_fspace.s_table);
1859 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
1860 udf_sb_free_bitmap(map->s_uspace.s_bitmap);
1861 if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
1862 udf_sb_free_bitmap(map->s_fspace.s_bitmap);
1863 if (map->s_partition_type == UDF_SPARABLE_MAP15)
1864 for (i = 0; i < 4; i++)
1865 brelse(map->s_type_specific.s_sparing.s_spar_map[i]);
1866 else if (map->s_partition_type == UDF_METADATA_MAP25) {
1867 mdata = &map->s_type_specific.s_metadata;
1868 iput(mdata->s_metadata_fe);
1869 mdata->s_metadata_fe = NULL;
1871 iput(mdata->s_mirror_fe);
1872 mdata->s_mirror_fe = NULL;
1874 iput(mdata->s_bitmap_fe);
1875 mdata->s_bitmap_fe = NULL;
1879 static int udf_fill_super(struct super_block *sb, void *options, int silent)
1883 struct inode *inode = NULL;
1884 struct udf_options uopt;
1885 struct kernel_lb_addr rootdir, fileset;
1886 struct udf_sb_info *sbi;
1888 uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT);
1892 uopt.fmode = UDF_INVALID_MODE;
1893 uopt.dmode = UDF_INVALID_MODE;
1895 sbi = kzalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
1899 sb->s_fs_info = sbi;
1901 mutex_init(&sbi->s_alloc_mutex);
1903 if (!udf_parse_options((char *)options, &uopt, false))
1906 if (uopt.flags & (1 << UDF_FLAG_UTF8) &&
1907 uopt.flags & (1 << UDF_FLAG_NLS_MAP)) {
1908 udf_err(sb, "utf8 cannot be combined with iocharset\n");
1911 #ifdef CONFIG_UDF_NLS
1912 if ((uopt.flags & (1 << UDF_FLAG_NLS_MAP)) && !uopt.nls_map) {
1913 uopt.nls_map = load_nls_default();
1915 uopt.flags &= ~(1 << UDF_FLAG_NLS_MAP);
1917 udf_debug("Using default NLS map\n");
1920 if (!(uopt.flags & (1 << UDF_FLAG_NLS_MAP)))
1921 uopt.flags |= (1 << UDF_FLAG_UTF8);
1923 fileset.logicalBlockNum = 0xFFFFFFFF;
1924 fileset.partitionReferenceNum = 0xFFFF;
1926 sbi->s_flags = uopt.flags;
1927 sbi->s_uid = uopt.uid;
1928 sbi->s_gid = uopt.gid;
1929 sbi->s_umask = uopt.umask;
1930 sbi->s_fmode = uopt.fmode;
1931 sbi->s_dmode = uopt.dmode;
1932 sbi->s_nls_map = uopt.nls_map;
1933 rwlock_init(&sbi->s_cred_lock);
1935 if (uopt.session == 0xFFFFFFFF)
1936 sbi->s_session = udf_get_last_session(sb);
1938 sbi->s_session = uopt.session;
1940 udf_debug("Multi-session=%d\n", sbi->s_session);
1942 /* Fill in the rest of the superblock */
1943 sb->s_op = &udf_sb_ops;
1944 sb->s_export_op = &udf_export_ops;
1947 sb->s_magic = UDF_SUPER_MAGIC;
1948 sb->s_time_gran = 1000;
1950 if (uopt.flags & (1 << UDF_FLAG_BLOCKSIZE_SET)) {
1951 ret = udf_load_vrs(sb, &uopt, silent, &fileset);
1953 uopt.blocksize = bdev_logical_block_size(sb->s_bdev);
1954 ret = udf_load_vrs(sb, &uopt, silent, &fileset);
1955 if (!ret && uopt.blocksize != UDF_DEFAULT_BLOCKSIZE) {
1957 pr_notice("Rescanning with blocksize %d\n",
1958 UDF_DEFAULT_BLOCKSIZE);
1959 uopt.blocksize = UDF_DEFAULT_BLOCKSIZE;
1960 ret = udf_load_vrs(sb, &uopt, silent, &fileset);
1964 udf_warn(sb, "No partition found (1)\n");
1968 udf_debug("Lastblock=%d\n", sbi->s_last_block);
1970 if (sbi->s_lvid_bh) {
1971 struct logicalVolIntegrityDescImpUse *lvidiu =
1973 uint16_t minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev);
1974 uint16_t minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev);
1975 /* uint16_t maxUDFWriteRev =
1976 le16_to_cpu(lvidiu->maxUDFWriteRev); */
1978 if (minUDFReadRev > UDF_MAX_READ_VERSION) {
1979 udf_err(sb, "minUDFReadRev=%x (max is %x)\n",
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 udf_warn(sb, "No partition found (2)\n");
1999 if (sbi->s_partmaps[sbi->s_partition].s_partition_flags &
2000 UDF_PART_FLAG_READ_ONLY) {
2001 pr_notice("Partition marked readonly; forcing readonly mount\n");
2002 sb->s_flags |= MS_RDONLY;
2005 if (udf_find_fileset(sb, &fileset, &rootdir)) {
2006 udf_warn(sb, "No fileset found\n");
2011 struct timestamp ts;
2012 udf_time_to_disk_stamp(&ts, sbi->s_record_time);
2013 udf_info("Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
2014 sbi->s_volume_ident,
2015 le16_to_cpu(ts.year), ts.month, ts.day,
2016 ts.hour, ts.minute, le16_to_cpu(ts.typeAndTimezone));
2018 if (!(sb->s_flags & MS_RDONLY))
2021 /* Assign the root inode */
2022 /* assign inodes by physical block number */
2023 /* perhaps it's not extensible enough, but for now ... */
2024 inode = udf_iget(sb, &rootdir);
2026 udf_err(sb, "Error in udf_iget, block=%d, partition=%d\n",
2027 rootdir.logicalBlockNum, rootdir.partitionReferenceNum);
2031 /* Allocate a dentry for the root inode */
2032 sb->s_root = d_alloc_root(inode);
2034 udf_err(sb, "Couldn't allocate root dentry\n");
2038 sb->s_maxbytes = MAX_LFS_FILESIZE;
2042 if (sbi->s_vat_inode)
2043 iput(sbi->s_vat_inode);
2044 if (sbi->s_partitions)
2045 for (i = 0; i < sbi->s_partitions; i++)
2046 udf_free_partition(&sbi->s_partmaps[i]);
2047 #ifdef CONFIG_UDF_NLS
2048 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
2049 unload_nls(sbi->s_nls_map);
2051 if (!(sb->s_flags & MS_RDONLY))
2053 brelse(sbi->s_lvid_bh);
2055 kfree(sbi->s_partmaps);
2057 sb->s_fs_info = NULL;
2062 void _udf_err(struct super_block *sb, const char *function,
2063 const char *fmt, ...)
2065 struct va_format vaf;
2069 if (!(sb->s_flags & MS_RDONLY))
2072 va_start(args, fmt);
2077 pr_err("error (device %s): %s: %pV", sb->s_id, function, &vaf);
2082 void _udf_warn(struct super_block *sb, const char *function,
2083 const char *fmt, ...)
2085 struct va_format vaf;
2088 va_start(args, fmt);
2093 pr_warn("warning (device %s): %s: %pV", sb->s_id, function, &vaf);
2098 static void udf_put_super(struct super_block *sb)
2101 struct udf_sb_info *sbi;
2105 if (sbi->s_vat_inode)
2106 iput(sbi->s_vat_inode);
2107 if (sbi->s_partitions)
2108 for (i = 0; i < sbi->s_partitions; i++)
2109 udf_free_partition(&sbi->s_partmaps[i]);
2110 #ifdef CONFIG_UDF_NLS
2111 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
2112 unload_nls(sbi->s_nls_map);
2114 if (!(sb->s_flags & MS_RDONLY))
2116 brelse(sbi->s_lvid_bh);
2117 kfree(sbi->s_partmaps);
2118 kfree(sb->s_fs_info);
2119 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;
2182 loc.logicalBlockNum = bitmap->s_extPosition;
2183 loc.partitionReferenceNum = UDF_SB(sb)->s_partition;
2184 bh = udf_read_ptagged(sb, &loc, 0, &ident);
2187 udf_err(sb, "udf_count_free failed\n");
2189 } else if (ident != TAG_IDENT_SBD) {
2191 udf_err(sb, "udf_count_free failed\n");
2195 bm = (struct spaceBitmapDesc *)bh->b_data;
2196 bytes = le32_to_cpu(bm->numOfBytes);
2197 index = sizeof(struct spaceBitmapDesc); /* offset in first block only */
2198 ptr = (uint8_t *)bh->b_data;
2201 u32 cur_bytes = min_t(u32, bytes, sb->s_blocksize - index);
2202 accum += bitmap_weight((const unsigned long *)(ptr + index),
2207 newblock = udf_get_lb_pblock(sb, &loc, ++block);
2208 bh = udf_tread(sb, newblock);
2210 udf_debug("read failed\n");
2214 ptr = (uint8_t *)bh->b_data;
2222 static unsigned int udf_count_free_table(struct super_block *sb,
2223 struct inode *table)
2225 unsigned int accum = 0;
2227 struct kernel_lb_addr eloc;
2229 struct extent_position epos;
2231 mutex_lock(&UDF_SB(sb)->s_alloc_mutex);
2232 epos.block = UDF_I(table)->i_location;
2233 epos.offset = sizeof(struct unallocSpaceEntry);
2236 while ((etype = udf_next_aext(table, &epos, &eloc, &elen, 1)) != -1)
2237 accum += (elen >> table->i_sb->s_blocksize_bits);
2240 mutex_unlock(&UDF_SB(sb)->s_alloc_mutex);
2245 static unsigned int udf_count_free(struct super_block *sb)
2247 unsigned int accum = 0;
2248 struct udf_sb_info *sbi;
2249 struct udf_part_map *map;
2252 if (sbi->s_lvid_bh) {
2253 struct logicalVolIntegrityDesc *lvid =
2254 (struct logicalVolIntegrityDesc *)
2255 sbi->s_lvid_bh->b_data;
2256 if (le32_to_cpu(lvid->numOfPartitions) > sbi->s_partition) {
2257 accum = le32_to_cpu(
2258 lvid->freeSpaceTable[sbi->s_partition]);
2259 if (accum == 0xFFFFFFFF)
2267 map = &sbi->s_partmaps[sbi->s_partition];
2268 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) {
2269 accum += udf_count_free_bitmap(sb,
2270 map->s_uspace.s_bitmap);
2272 if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) {
2273 accum += udf_count_free_bitmap(sb,
2274 map->s_fspace.s_bitmap);
2279 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) {
2280 accum += udf_count_free_table(sb,
2281 map->s_uspace.s_table);
2283 if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) {
2284 accum += udf_count_free_table(sb,
2285 map->s_fspace.s_table);