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 <asm/byteorder.h>
63 #include <linux/init.h>
64 #include <asm/uaccess.h>
66 #define VDS_POS_PRIMARY_VOL_DESC 0
67 #define VDS_POS_UNALLOC_SPACE_DESC 1
68 #define VDS_POS_LOGICAL_VOL_DESC 2
69 #define VDS_POS_PARTITION_DESC 3
70 #define VDS_POS_IMP_USE_VOL_DESC 4
71 #define VDS_POS_VOL_DESC_PTR 5
72 #define VDS_POS_TERMINATING_DESC 6
73 #define VDS_POS_LENGTH 7
75 #define UDF_DEFAULT_BLOCKSIZE 2048
77 static char error_buf[1024];
79 /* These are the "meat" - everything else is stuffing */
80 static int udf_fill_super(struct super_block *, void *, int);
81 static void udf_put_super(struct super_block *);
82 static void udf_write_super(struct super_block *);
83 static int udf_remount_fs(struct super_block *, int *, char *);
84 static int udf_check_valid(struct super_block *, int, int);
85 static int udf_vrs(struct super_block *sb, int silent);
86 static int udf_load_partition(struct super_block *, kernel_lb_addr *);
87 static int udf_load_logicalvol(struct super_block *, struct buffer_head *,
89 static void udf_load_logicalvolint(struct super_block *, kernel_extent_ad);
90 static void udf_find_anchor(struct super_block *);
91 static int udf_find_fileset(struct super_block *, kernel_lb_addr *,
93 static void udf_load_pvoldesc(struct super_block *, struct buffer_head *);
94 static void udf_load_fileset(struct super_block *, struct buffer_head *,
96 static int udf_load_partdesc(struct super_block *, struct buffer_head *);
97 static void udf_open_lvid(struct super_block *);
98 static void udf_close_lvid(struct super_block *);
99 static unsigned int udf_count_free(struct super_block *);
100 static int udf_statfs(struct dentry *, struct kstatfs *);
101 static int udf_show_options(struct seq_file *, struct vfsmount *);
103 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi)
105 struct logicalVolIntegrityDesc *lvid =
106 (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data;
107 __u32 number_of_partitions = le32_to_cpu(lvid->numOfPartitions);
108 __u32 offset = number_of_partitions * 2 *
109 sizeof(uint32_t)/sizeof(uint8_t);
110 return (struct logicalVolIntegrityDescImpUse *)&(lvid->impUse[offset]);
113 /* UDF filesystem type */
114 static int udf_get_sb(struct file_system_type *fs_type,
115 int flags, const char *dev_name, void *data,
116 struct vfsmount *mnt)
118 return get_sb_bdev(fs_type, flags, dev_name, data, udf_fill_super, mnt);
121 static struct file_system_type udf_fstype = {
122 .owner = THIS_MODULE,
124 .get_sb = udf_get_sb,
125 .kill_sb = kill_block_super,
126 .fs_flags = FS_REQUIRES_DEV,
129 static struct kmem_cache *udf_inode_cachep;
131 static struct inode *udf_alloc_inode(struct super_block *sb)
133 struct udf_inode_info *ei;
134 ei = kmem_cache_alloc(udf_inode_cachep, GFP_KERNEL);
139 ei->i_lenExtents = 0;
140 ei->i_next_alloc_block = 0;
141 ei->i_next_alloc_goal = 0;
144 return &ei->vfs_inode;
147 static void udf_destroy_inode(struct inode *inode)
149 kmem_cache_free(udf_inode_cachep, UDF_I(inode));
152 static void init_once(struct kmem_cache *cachep, void *foo)
154 struct udf_inode_info *ei = (struct udf_inode_info *)foo;
156 ei->i_ext.i_data = NULL;
157 inode_init_once(&ei->vfs_inode);
160 static int init_inodecache(void)
162 udf_inode_cachep = kmem_cache_create("udf_inode_cache",
163 sizeof(struct udf_inode_info),
164 0, (SLAB_RECLAIM_ACCOUNT |
167 if (!udf_inode_cachep)
172 static void destroy_inodecache(void)
174 kmem_cache_destroy(udf_inode_cachep);
177 /* Superblock operations */
178 static const struct super_operations udf_sb_ops = {
179 .alloc_inode = udf_alloc_inode,
180 .destroy_inode = udf_destroy_inode,
181 .write_inode = udf_write_inode,
182 .delete_inode = udf_delete_inode,
183 .clear_inode = udf_clear_inode,
184 .put_super = udf_put_super,
185 .write_super = udf_write_super,
186 .statfs = udf_statfs,
187 .remount_fs = udf_remount_fs,
188 .show_options = udf_show_options,
193 unsigned int blocksize;
194 unsigned int session;
195 unsigned int lastblock;
198 unsigned short partition;
199 unsigned int fileset;
200 unsigned int rootdir;
205 struct nls_table *nls_map;
208 static int __init init_udf_fs(void)
212 err = init_inodecache();
215 err = register_filesystem(&udf_fstype);
222 destroy_inodecache();
228 static void __exit exit_udf_fs(void)
230 unregister_filesystem(&udf_fstype);
231 destroy_inodecache();
234 module_init(init_udf_fs)
235 module_exit(exit_udf_fs)
237 static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count)
239 struct udf_sb_info *sbi = UDF_SB(sb);
241 sbi->s_partmaps = kcalloc(count, sizeof(struct udf_part_map),
243 if (!sbi->s_partmaps) {
244 udf_error(sb, __FUNCTION__,
245 "Unable to allocate space for %d partition maps",
247 sbi->s_partitions = 0;
251 sbi->s_partitions = count;
255 static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt)
257 struct super_block *sb = mnt->mnt_sb;
258 struct udf_sb_info *sbi = UDF_SB(sb);
260 if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT))
261 seq_puts(seq, ",nostrict");
262 if (sb->s_blocksize != UDF_DEFAULT_BLOCKSIZE)
263 seq_printf(seq, ",bs=%lu", sb->s_blocksize);
264 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE))
265 seq_puts(seq, ",unhide");
266 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNDELETE))
267 seq_puts(seq, ",undelete");
268 if (!UDF_QUERY_FLAG(sb, UDF_FLAG_USE_AD_IN_ICB))
269 seq_puts(seq, ",noadinicb");
270 if (UDF_QUERY_FLAG(sb, UDF_FLAG_USE_SHORT_AD))
271 seq_puts(seq, ",shortad");
272 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_FORGET))
273 seq_puts(seq, ",uid=forget");
274 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_IGNORE))
275 seq_puts(seq, ",uid=ignore");
276 if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_FORGET))
277 seq_puts(seq, ",gid=forget");
278 if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_IGNORE))
279 seq_puts(seq, ",gid=ignore");
280 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
281 seq_printf(seq, ",uid=%u", sbi->s_uid);
282 if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
283 seq_printf(seq, ",gid=%u", sbi->s_gid);
284 if (sbi->s_umask != 0)
285 seq_printf(seq, ",umask=%o", sbi->s_umask);
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);
291 * s_anchor[2] could be zeroed out in case there is no anchor
292 * in the specified block, but then the "anchor=N" option
293 * originally given by the user wasn't effective, so it's OK
294 * if we don't show it.
296 if (sbi->s_anchor[2] != 0)
297 seq_printf(seq, ",anchor=%u", sbi->s_anchor[2]);
299 * volume, partition, fileset and rootdir seem to be ignored
302 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8))
303 seq_puts(seq, ",utf8");
304 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP) && sbi->s_nls_map)
305 seq_printf(seq, ",iocharset=%s", sbi->s_nls_map->charset);
314 * Parse mount options.
317 * The following mount options are supported:
319 * gid= Set the default group.
320 * umask= Set the default umask.
321 * uid= Set the default user.
322 * bs= Set the block size.
323 * unhide Show otherwise hidden files.
324 * undelete Show deleted files in lists.
325 * adinicb Embed data in the inode (default)
326 * noadinicb Don't embed data in the inode
327 * shortad Use short ad's
328 * longad Use long ad's (default)
329 * nostrict Unset strict conformance
330 * iocharset= Set the NLS character set
332 * The remaining are for debugging and disaster recovery:
334 * novrs Skip volume sequence recognition
336 * The following expect a offset from 0.
338 * session= Set the CDROM session (default= last session)
339 * anchor= Override standard anchor location. (default= 256)
340 * volume= Override the VolumeDesc location. (unused)
341 * partition= Override the PartitionDesc location. (unused)
342 * lastblock= Set the last block of the filesystem/
344 * The following expect a offset from the partition root.
346 * fileset= Override the fileset block location. (unused)
347 * rootdir= Override the root directory location. (unused)
348 * WARNING: overriding the rootdir to a non-directory may
349 * yield highly unpredictable results.
352 * options Pointer to mount options string.
353 * uopts Pointer to mount options variable.
356 * <return> 1 Mount options parsed okay.
357 * <return> 0 Error parsing mount options.
360 * July 1, 1997 - Andrew E. Mileski
361 * Written, tested, and released.
365 Opt_novrs, Opt_nostrict, Opt_bs, Opt_unhide, Opt_undelete,
366 Opt_noadinicb, Opt_adinicb, Opt_shortad, Opt_longad,
367 Opt_gid, Opt_uid, Opt_umask, Opt_session, Opt_lastblock,
368 Opt_anchor, Opt_volume, Opt_partition, Opt_fileset,
369 Opt_rootdir, Opt_utf8, Opt_iocharset,
370 Opt_err, Opt_uforget, Opt_uignore, Opt_gforget, Opt_gignore
373 static match_table_t tokens = {
374 {Opt_novrs, "novrs"},
375 {Opt_nostrict, "nostrict"},
377 {Opt_unhide, "unhide"},
378 {Opt_undelete, "undelete"},
379 {Opt_noadinicb, "noadinicb"},
380 {Opt_adinicb, "adinicb"},
381 {Opt_shortad, "shortad"},
382 {Opt_longad, "longad"},
383 {Opt_uforget, "uid=forget"},
384 {Opt_uignore, "uid=ignore"},
385 {Opt_gforget, "gid=forget"},
386 {Opt_gignore, "gid=ignore"},
389 {Opt_umask, "umask=%o"},
390 {Opt_session, "session=%u"},
391 {Opt_lastblock, "lastblock=%u"},
392 {Opt_anchor, "anchor=%u"},
393 {Opt_volume, "volume=%u"},
394 {Opt_partition, "partition=%u"},
395 {Opt_fileset, "fileset=%u"},
396 {Opt_rootdir, "rootdir=%u"},
398 {Opt_iocharset, "iocharset=%s"},
402 static int udf_parse_options(char *options, struct udf_options *uopt,
409 uopt->blocksize = UDF_DEFAULT_BLOCKSIZE;
410 uopt->partition = 0xFFFF;
411 uopt->session = 0xFFFFFFFF;
414 uopt->volume = 0xFFFFFFFF;
415 uopt->rootdir = 0xFFFFFFFF;
416 uopt->fileset = 0xFFFFFFFF;
417 uopt->nls_map = NULL;
422 while ((p = strsep(&options, ",")) != NULL) {
423 substring_t args[MAX_OPT_ARGS];
428 token = match_token(p, tokens, args);
433 if (match_int(&args[0], &option))
435 uopt->blocksize = option;
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 printk(KERN_ERR "udf: bad mount option \"%s\" "
537 "or missing value\n", p);
544 static void udf_write_super(struct super_block *sb)
548 if (!(sb->s_flags & MS_RDONLY))
555 static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
557 struct udf_options uopt;
558 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;
565 if (!udf_parse_options(options, &uopt, true))
568 sbi->s_flags = uopt.flags;
569 sbi->s_uid = uopt.uid;
570 sbi->s_gid = uopt.gid;
571 sbi->s_umask = uopt.umask;
573 if (sbi->s_lvid_bh) {
574 int write_rev = le16_to_cpu(udf_sb_lvidiu(sbi)->minUDFWriteRev);
575 if (write_rev > UDF_MAX_WRITE_VERSION)
579 if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
581 if (*flags & MS_RDONLY)
589 static int udf_vrs(struct super_block *sb, int silent)
591 struct volStructDesc *vsd = NULL;
594 struct buffer_head *bh = NULL;
598 struct udf_sb_info *sbi;
600 /* Block size must be a multiple of 512 */
601 if (sb->s_blocksize & 511)
605 if (sb->s_blocksize < sizeof(struct volStructDesc))
606 sectorsize = sizeof(struct volStructDesc);
608 sectorsize = sb->s_blocksize;
610 sector += (sbi->s_session << sb->s_blocksize_bits);
612 udf_debug("Starting at sector %u (%ld byte sectors)\n",
613 (sector >> sb->s_blocksize_bits), sb->s_blocksize);
614 /* Process the sequence (if applicable) */
615 for (; !nsr02 && !nsr03; sector += sectorsize) {
617 bh = udf_tread(sb, sector >> sb->s_blocksize_bits);
621 /* Look for ISO descriptors */
622 vsd = (struct volStructDesc *)(bh->b_data +
623 (sector & (sb->s_blocksize - 1)));
625 if (vsd->stdIdent[0] == 0) {
628 } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001,
631 switch (vsd->structType) {
633 udf_debug("ISO9660 Boot Record found\n");
636 udf_debug("ISO9660 Primary Volume Descriptor "
640 udf_debug("ISO9660 Supplementary Volume "
641 "Descriptor found\n");
644 udf_debug("ISO9660 Volume Partition Descriptor "
648 udf_debug("ISO9660 Volume Descriptor Set "
649 "Terminator found\n");
652 udf_debug("ISO9660 VRS (%u) found\n",
656 } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BEA01,
659 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_TEA01,
663 } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR02,
666 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR03,
676 else if (sector - (sbi->s_session << sb->s_blocksize_bits) == 32768)
686 * Find an anchor volume descriptor.
689 * sb Pointer to _locked_ superblock.
690 * lastblock Last block on media.
693 * <return> 1 if not found, 0 if ok
696 * July 1, 1997 - Andrew E. Mileski
697 * Written, tested, and released.
699 static void udf_find_anchor(struct super_block *sb)
702 struct buffer_head *bh = NULL;
706 struct udf_sb_info *sbi;
709 lastblock = sbi->s_last_block;
712 int varlastblock = udf_variable_to_fixed(lastblock);
713 int last[] = { lastblock, lastblock - 2,
714 lastblock - 150, lastblock - 152,
715 varlastblock, varlastblock - 2,
716 varlastblock - 150, varlastblock - 152 };
720 /* Search for an anchor volume descriptor pointer */
722 /* according to spec, anchor is in either:
726 * however, if the disc isn't closed, it could be 512 */
728 for (i = 0; !lastblock && i < ARRAY_SIZE(last); i++) {
729 ident = location = 0;
731 bh = sb_bread(sb, last[i]);
733 tag *t = (tag *)bh->b_data;
734 ident = le16_to_cpu(t->tagIdent);
735 location = le32_to_cpu(t->tagLocation);
740 if (ident == TAG_IDENT_AVDP) {
741 if (location == last[i] - sbi->s_session) {
742 lastblock = last[i] - sbi->s_session;
743 sbi->s_anchor[0] = lastblock;
744 sbi->s_anchor[1] = lastblock - 256;
745 } else if (location ==
746 udf_variable_to_fixed(last[i]) -
748 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
750 udf_variable_to_fixed(last[i]) -
752 sbi->s_anchor[0] = lastblock;
753 sbi->s_anchor[1] = lastblock - 256 -
756 udf_debug("Anchor found at block %d, "
757 "location mismatch %d.\n",
760 } else if (ident == TAG_IDENT_FE ||
761 ident == TAG_IDENT_EFE) {
763 sbi->s_anchor[3] = 512;
765 ident = location = 0;
766 if (last[i] >= 256) {
767 bh = sb_bread(sb, last[i] - 256);
769 tag *t = (tag *)bh->b_data;
772 location = le32_to_cpu(
778 if (ident == TAG_IDENT_AVDP &&
779 location == last[i] - 256 -
782 sbi->s_anchor[1] = last[i] - 256;
784 ident = location = 0;
785 if (last[i] >= 312 + sbi->s_session) {
794 location = le32_to_cpu(
800 if (ident == TAG_IDENT_AVDP &&
801 location == udf_variable_to_fixed(last[i]) - 256) {
804 lastblock = udf_variable_to_fixed(last[i]);
805 sbi->s_anchor[1] = lastblock - 256;
813 /* We haven't found the lastblock. check 312 */
814 bh = sb_bread(sb, 312 + sbi->s_session);
816 tag *t = (tag *)bh->b_data;
817 ident = le16_to_cpu(t->tagIdent);
818 location = le32_to_cpu(t->tagLocation);
821 if (ident == TAG_IDENT_AVDP && location == 256)
822 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
826 for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
827 if (sbi->s_anchor[i]) {
828 bh = udf_read_tagged(sb, sbi->s_anchor[i],
829 sbi->s_anchor[i], &ident);
831 sbi->s_anchor[i] = 0;
834 if ((ident != TAG_IDENT_AVDP) &&
835 (i || (ident != TAG_IDENT_FE &&
836 ident != TAG_IDENT_EFE)))
837 sbi->s_anchor[i] = 0;
842 sbi->s_last_block = lastblock;
845 static int udf_find_fileset(struct super_block *sb,
846 kernel_lb_addr *fileset,
847 kernel_lb_addr *root)
849 struct buffer_head *bh = NULL;
852 struct udf_sb_info *sbi;
854 if (fileset->logicalBlockNum != 0xFFFFFFFF ||
855 fileset->partitionReferenceNum != 0xFFFF) {
856 bh = udf_read_ptagged(sb, *fileset, 0, &ident);
860 } else if (ident != TAG_IDENT_FSD) {
869 /* Search backwards through the partitions */
870 kernel_lb_addr newfileset;
872 /* --> cvg: FIXME - is it reasonable? */
875 for (newfileset.partitionReferenceNum = sbi->s_partitions - 1;
876 (newfileset.partitionReferenceNum != 0xFFFF &&
877 fileset->logicalBlockNum == 0xFFFFFFFF &&
878 fileset->partitionReferenceNum == 0xFFFF);
879 newfileset.partitionReferenceNum--) {
880 lastblock = sbi->s_partmaps
881 [newfileset.partitionReferenceNum]
883 newfileset.logicalBlockNum = 0;
886 bh = udf_read_ptagged(sb, newfileset, 0,
889 newfileset.logicalBlockNum++;
896 struct spaceBitmapDesc *sp;
897 sp = (struct spaceBitmapDesc *)
899 newfileset.logicalBlockNum += 1 +
900 ((le32_to_cpu(sp->numOfBytes) +
901 sizeof(struct spaceBitmapDesc)
902 - 1) >> sb->s_blocksize_bits);
907 *fileset = newfileset;
910 newfileset.logicalBlockNum++;
915 } while (newfileset.logicalBlockNum < lastblock &&
916 fileset->logicalBlockNum == 0xFFFFFFFF &&
917 fileset->partitionReferenceNum == 0xFFFF);
921 if ((fileset->logicalBlockNum != 0xFFFFFFFF ||
922 fileset->partitionReferenceNum != 0xFFFF) && bh) {
923 udf_debug("Fileset at block=%d, partition=%d\n",
924 fileset->logicalBlockNum,
925 fileset->partitionReferenceNum);
927 sbi->s_partition = fileset->partitionReferenceNum;
928 udf_load_fileset(sb, bh, root);
935 static void udf_load_pvoldesc(struct super_block *sb, struct buffer_head *bh)
937 struct primaryVolDesc *pvoldesc;
943 pvoldesc = (struct primaryVolDesc *)bh->b_data;
945 if (udf_stamp_to_time(&recording, &recording_usec,
946 lets_to_cpu(pvoldesc->recordingDateAndTime))) {
948 ts = lets_to_cpu(pvoldesc->recordingDateAndTime);
949 udf_debug("recording time %ld/%ld, %04u/%02u/%02u"
951 recording, recording_usec,
952 ts.year, ts.month, ts.day, ts.hour,
953 ts.minute, ts.typeAndTimezone);
954 UDF_SB(sb)->s_record_time.tv_sec = recording;
955 UDF_SB(sb)->s_record_time.tv_nsec = recording_usec * 1000;
958 if (!udf_build_ustr(&instr, pvoldesc->volIdent, 32))
959 if (udf_CS0toUTF8(&outstr, &instr)) {
960 strncpy(UDF_SB(sb)->s_volume_ident, outstr.u_name,
961 outstr.u_len > 31 ? 31 : outstr.u_len);
962 udf_debug("volIdent[] = '%s'\n",
963 UDF_SB(sb)->s_volume_ident);
966 if (!udf_build_ustr(&instr, pvoldesc->volSetIdent, 128))
967 if (udf_CS0toUTF8(&outstr, &instr))
968 udf_debug("volSetIdent[] = '%s'\n", outstr.u_name);
971 static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
972 kernel_lb_addr *root)
974 struct fileSetDesc *fset;
976 fset = (struct fileSetDesc *)bh->b_data;
978 *root = lelb_to_cpu(fset->rootDirectoryICB.extLocation);
980 UDF_SB(sb)->s_serial_number = le16_to_cpu(fset->descTag.tagSerialNum);
982 udf_debug("Rootdir at block=%d, partition=%d\n",
983 root->logicalBlockNum, root->partitionReferenceNum);
986 int udf_compute_nr_groups(struct super_block *sb, u32 partition)
988 struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
989 return (map->s_partition_len +
990 (sizeof(struct spaceBitmapDesc) << 3) +
991 (sb->s_blocksize * 8) - 1) /
992 (sb->s_blocksize * 8);
995 static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
997 struct udf_bitmap *bitmap;
1001 nr_groups = udf_compute_nr_groups(sb, index);
1002 size = sizeof(struct udf_bitmap) +
1003 (sizeof(struct buffer_head *) * nr_groups);
1005 if (size <= PAGE_SIZE)
1006 bitmap = kmalloc(size, GFP_KERNEL);
1008 bitmap = vmalloc(size); /* TODO: get rid of vmalloc */
1010 if (bitmap == NULL) {
1011 udf_error(sb, __FUNCTION__,
1012 "Unable to allocate space for bitmap "
1013 "and %d buffer_head pointers", nr_groups);
1017 memset(bitmap, 0x00, size);
1018 bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1);
1019 bitmap->s_nr_groups = nr_groups;
1023 static int udf_load_partdesc(struct super_block *sb, struct buffer_head *bh)
1025 struct partitionDesc *p;
1027 struct udf_part_map *map;
1028 struct udf_sb_info *sbi;
1030 p = (struct partitionDesc *)bh->b_data;
1033 for (i = 0; i < sbi->s_partitions; i++) {
1034 map = &sbi->s_partmaps[i];
1035 udf_debug("Searching map: (%d == %d)\n",
1036 map->s_partition_num,
1037 le16_to_cpu(p->partitionNumber));
1038 if (map->s_partition_num ==
1039 le16_to_cpu(p->partitionNumber)) {
1040 map->s_partition_len =
1041 le32_to_cpu(p->partitionLength); /* blocks */
1042 map->s_partition_root =
1043 le32_to_cpu(p->partitionStartingLocation);
1044 if (p->accessType ==
1045 cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
1046 map->s_partition_flags |=
1047 UDF_PART_FLAG_READ_ONLY;
1048 if (p->accessType ==
1049 cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
1050 map->s_partition_flags |=
1051 UDF_PART_FLAG_WRITE_ONCE;
1052 if (p->accessType ==
1053 cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
1054 map->s_partition_flags |=
1055 UDF_PART_FLAG_REWRITABLE;
1056 if (p->accessType ==
1057 cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
1058 map->s_partition_flags |=
1059 UDF_PART_FLAG_OVERWRITABLE;
1061 if (!strcmp(p->partitionContents.ident,
1062 PD_PARTITION_CONTENTS_NSR02) ||
1063 !strcmp(p->partitionContents.ident,
1064 PD_PARTITION_CONTENTS_NSR03)) {
1065 struct partitionHeaderDesc *phd;
1067 phd = (struct partitionHeaderDesc *)
1068 (p->partitionContentsUse);
1069 if (phd->unallocSpaceTable.extLength) {
1070 kernel_lb_addr loc = {
1071 .logicalBlockNum = le32_to_cpu(phd->unallocSpaceTable.extPosition),
1072 .partitionReferenceNum = i,
1075 map->s_uspace.s_table =
1077 if (!map->s_uspace.s_table) {
1078 udf_debug("cannot load unallocSpaceTable (part %d)\n", i);
1081 map->s_partition_flags |=
1082 UDF_PART_FLAG_UNALLOC_TABLE;
1083 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1084 i, map->s_uspace.s_table->i_ino);
1086 if (phd->unallocSpaceBitmap.extLength) {
1087 struct udf_bitmap *bitmap =
1088 udf_sb_alloc_bitmap(sb, i);
1089 map->s_uspace.s_bitmap = bitmap;
1090 if (bitmap != NULL) {
1091 bitmap->s_extLength =
1092 le32_to_cpu(phd->unallocSpaceBitmap.extLength);
1093 bitmap->s_extPosition =
1094 le32_to_cpu(phd->unallocSpaceBitmap.extPosition);
1095 map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
1096 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
1097 i, bitmap->s_extPosition);
1100 if (phd->partitionIntegrityTable.extLength)
1101 udf_debug("partitionIntegrityTable (part %d)\n", i);
1102 if (phd->freedSpaceTable.extLength) {
1103 kernel_lb_addr loc = {
1104 .logicalBlockNum = le32_to_cpu(phd->freedSpaceTable.extPosition),
1105 .partitionReferenceNum = i,
1108 map->s_fspace.s_table =
1110 if (!map->s_fspace.s_table) {
1111 udf_debug("cannot load freedSpaceTable (part %d)\n", i);
1114 map->s_partition_flags |=
1115 UDF_PART_FLAG_FREED_TABLE;
1116 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1117 i, map->s_fspace.s_table->i_ino);
1119 if (phd->freedSpaceBitmap.extLength) {
1120 struct udf_bitmap *bitmap =
1121 udf_sb_alloc_bitmap(sb, i);
1122 map->s_fspace.s_bitmap = bitmap;
1123 if (bitmap != NULL) {
1124 bitmap->s_extLength =
1125 le32_to_cpu(phd->freedSpaceBitmap.extLength);
1126 bitmap->s_extPosition =
1127 le32_to_cpu(phd->freedSpaceBitmap.extPosition);
1128 map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
1129 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1130 i, bitmap->s_extPosition);
1137 if (i == sbi->s_partitions)
1138 udf_debug("Partition (%d) not found in partition map\n",
1139 le16_to_cpu(p->partitionNumber));
1141 udf_debug("Partition (%d:%d type %x) starts at physical %d, "
1142 "block length %d\n",
1143 le16_to_cpu(p->partitionNumber), i,
1144 map->s_partition_type,
1145 map->s_partition_root,
1146 map->s_partition_len);
1150 static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
1151 kernel_lb_addr *fileset)
1153 struct logicalVolDesc *lvd;
1156 struct udf_sb_info *sbi = UDF_SB(sb);
1157 struct genericPartitionMap *gpm;
1159 lvd = (struct logicalVolDesc *)bh->b_data;
1161 i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
1165 for (i = 0, offset = 0;
1166 i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength);
1167 i++, offset += gpm->partitionMapLength) {
1168 struct udf_part_map *map = &sbi->s_partmaps[i];
1169 gpm = (struct genericPartitionMap *)
1170 &(lvd->partitionMaps[offset]);
1171 type = gpm->partitionMapType;
1173 struct genericPartitionMap1 *gpm1 =
1174 (struct genericPartitionMap1 *)gpm;
1175 map->s_partition_type = UDF_TYPE1_MAP15;
1176 map->s_volumeseqnum = le16_to_cpu(gpm1->volSeqNum);
1177 map->s_partition_num = le16_to_cpu(gpm1->partitionNum);
1178 map->s_partition_func = NULL;
1179 } else if (type == 2) {
1180 struct udfPartitionMap2 *upm2 =
1181 (struct udfPartitionMap2 *)gpm;
1182 if (!strncmp(upm2->partIdent.ident, UDF_ID_VIRTUAL,
1183 strlen(UDF_ID_VIRTUAL))) {
1185 le16_to_cpu(((__le16 *)upm2->partIdent.
1187 if (suf == 0x0150) {
1188 map->s_partition_type =
1190 map->s_partition_func =
1191 udf_get_pblock_virt15;
1192 } else if (suf == 0x0200) {
1193 map->s_partition_type =
1195 map->s_partition_func =
1196 udf_get_pblock_virt20;
1198 } else if (!strncmp(upm2->partIdent.ident,
1200 strlen(UDF_ID_SPARABLE))) {
1203 struct sparingTable *st;
1204 struct sparablePartitionMap *spm =
1205 (struct sparablePartitionMap *)gpm;
1207 map->s_partition_type = UDF_SPARABLE_MAP15;
1208 map->s_type_specific.s_sparing.s_packet_len =
1209 le16_to_cpu(spm->packetLength);
1210 for (j = 0; j < spm->numSparingTables; j++) {
1211 struct buffer_head *bh2;
1214 spm->locSparingTable[j]);
1215 bh2 = udf_read_tagged(sb, loc, loc,
1217 map->s_type_specific.s_sparing.
1218 s_spar_map[j] = bh2;
1221 st = (struct sparingTable *)
1223 if (ident != 0 || strncmp(
1224 st->sparingIdent.ident,
1226 strlen(UDF_ID_SPARING))) {
1228 map->s_type_specific.
1235 map->s_partition_func = udf_get_pblock_spar15;
1237 udf_debug("Unknown ident: %s\n",
1238 upm2->partIdent.ident);
1241 map->s_volumeseqnum = le16_to_cpu(upm2->volSeqNum);
1242 map->s_partition_num = le16_to_cpu(upm2->partitionNum);
1244 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1245 i, map->s_partition_num, type,
1246 map->s_volumeseqnum);
1250 long_ad *la = (long_ad *)&(lvd->logicalVolContentsUse[0]);
1252 *fileset = lelb_to_cpu(la->extLocation);
1253 udf_debug("FileSet found in LogicalVolDesc at block=%d, "
1254 "partition=%d\n", fileset->logicalBlockNum,
1255 fileset->partitionReferenceNum);
1257 if (lvd->integritySeqExt.extLength)
1258 udf_load_logicalvolint(sb, leea_to_cpu(lvd->integritySeqExt));
1264 * udf_load_logicalvolint
1267 static void udf_load_logicalvolint(struct super_block *sb, kernel_extent_ad loc)
1269 struct buffer_head *bh = NULL;
1271 struct udf_sb_info *sbi = UDF_SB(sb);
1272 struct logicalVolIntegrityDesc *lvid;
1274 while (loc.extLength > 0 &&
1275 (bh = udf_read_tagged(sb, loc.extLocation,
1276 loc.extLocation, &ident)) &&
1277 ident == TAG_IDENT_LVID) {
1278 sbi->s_lvid_bh = bh;
1279 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1281 if (lvid->nextIntegrityExt.extLength)
1282 udf_load_logicalvolint(sb,
1283 leea_to_cpu(lvid->nextIntegrityExt));
1285 if (sbi->s_lvid_bh != bh)
1287 loc.extLength -= sb->s_blocksize;
1290 if (sbi->s_lvid_bh != bh)
1295 * udf_process_sequence
1298 * Process a main/reserve volume descriptor sequence.
1301 * sb Pointer to _locked_ superblock.
1302 * block First block of first extent of the sequence.
1303 * lastblock Lastblock of first extent of the sequence.
1306 * July 1, 1997 - Andrew E. Mileski
1307 * Written, tested, and released.
1309 static int udf_process_sequence(struct super_block *sb, long block,
1310 long lastblock, kernel_lb_addr *fileset)
1312 struct buffer_head *bh = NULL;
1313 struct udf_vds_record vds[VDS_POS_LENGTH];
1314 struct udf_vds_record *curr;
1315 struct generic_desc *gd;
1316 struct volDescPtr *vdp;
1321 long next_s = 0, next_e = 0;
1323 memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH);
1325 /* Read the main descriptor sequence */
1326 for (; (!done && block <= lastblock); block++) {
1328 bh = udf_read_tagged(sb, block, block, &ident);
1332 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1333 gd = (struct generic_desc *)bh->b_data;
1334 vdsn = le32_to_cpu(gd->volDescSeqNum);
1336 case TAG_IDENT_PVD: /* ISO 13346 3/10.1 */
1337 curr = &vds[VDS_POS_PRIMARY_VOL_DESC];
1338 if (vdsn >= curr->volDescSeqNum) {
1339 curr->volDescSeqNum = vdsn;
1340 curr->block = block;
1343 case TAG_IDENT_VDP: /* ISO 13346 3/10.3 */
1344 curr = &vds[VDS_POS_VOL_DESC_PTR];
1345 if (vdsn >= curr->volDescSeqNum) {
1346 curr->volDescSeqNum = vdsn;
1347 curr->block = block;
1349 vdp = (struct volDescPtr *)bh->b_data;
1350 next_s = le32_to_cpu(
1351 vdp->nextVolDescSeqExt.extLocation);
1352 next_e = le32_to_cpu(
1353 vdp->nextVolDescSeqExt.extLength);
1354 next_e = next_e >> sb->s_blocksize_bits;
1358 case TAG_IDENT_IUVD: /* ISO 13346 3/10.4 */
1359 curr = &vds[VDS_POS_IMP_USE_VOL_DESC];
1360 if (vdsn >= curr->volDescSeqNum) {
1361 curr->volDescSeqNum = vdsn;
1362 curr->block = block;
1365 case TAG_IDENT_PD: /* ISO 13346 3/10.5 */
1366 curr = &vds[VDS_POS_PARTITION_DESC];
1368 curr->block = block;
1370 case TAG_IDENT_LVD: /* ISO 13346 3/10.6 */
1371 curr = &vds[VDS_POS_LOGICAL_VOL_DESC];
1372 if (vdsn >= curr->volDescSeqNum) {
1373 curr->volDescSeqNum = vdsn;
1374 curr->block = block;
1377 case TAG_IDENT_USD: /* ISO 13346 3/10.8 */
1378 curr = &vds[VDS_POS_UNALLOC_SPACE_DESC];
1379 if (vdsn >= curr->volDescSeqNum) {
1380 curr->volDescSeqNum = vdsn;
1381 curr->block = block;
1384 case TAG_IDENT_TD: /* ISO 13346 3/10.9 */
1385 vds[VDS_POS_TERMINATING_DESC].block = block;
1389 next_s = next_e = 0;
1396 for (i = 0; i < VDS_POS_LENGTH; i++) {
1398 bh = udf_read_tagged(sb, vds[i].block, vds[i].block,
1401 if (i == VDS_POS_PRIMARY_VOL_DESC) {
1402 udf_load_pvoldesc(sb, bh);
1403 } else if (i == VDS_POS_LOGICAL_VOL_DESC) {
1404 if (udf_load_logicalvol(sb, bh, fileset)) {
1408 } else if (i == VDS_POS_PARTITION_DESC) {
1409 struct buffer_head *bh2 = NULL;
1410 if (udf_load_partdesc(sb, bh)) {
1414 for (j = vds[i].block + 1;
1415 j < vds[VDS_POS_TERMINATING_DESC].block;
1417 bh2 = udf_read_tagged(sb, j, j, &ident);
1418 gd = (struct generic_desc *)bh2->b_data;
1419 if (ident == TAG_IDENT_PD)
1420 if (udf_load_partdesc(sb,
1439 static int udf_check_valid(struct super_block *sb, int novrs, int silent)
1444 udf_debug("Validity check skipped because of novrs option\n");
1447 /* Check that it is NSR02 compliant */
1448 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
1450 block = udf_vrs(sb, silent);
1452 struct udf_sb_info *sbi = UDF_SB(sb);
1453 udf_debug("Failed to read byte 32768. Assuming open "
1454 "disc. Skipping validity check\n");
1455 if (!sbi->s_last_block)
1456 sbi->s_last_block = udf_get_last_block(sb);
1463 static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
1465 struct anchorVolDescPtr *anchor;
1467 struct buffer_head *bh;
1468 long main_s, main_e, reserve_s, reserve_e;
1470 struct udf_sb_info *sbi;
1476 for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
1477 if (!sbi->s_anchor[i])
1479 bh = udf_read_tagged(sb, sbi->s_anchor[i], sbi->s_anchor[i],
1484 anchor = (struct anchorVolDescPtr *)bh->b_data;
1486 /* Locate the main sequence */
1487 main_s = le32_to_cpu(anchor->mainVolDescSeqExt.extLocation);
1488 main_e = le32_to_cpu(anchor->mainVolDescSeqExt.extLength);
1489 main_e = main_e >> sb->s_blocksize_bits;
1492 /* Locate the reserve sequence */
1493 reserve_s = le32_to_cpu(
1494 anchor->reserveVolDescSeqExt.extLocation);
1495 reserve_e = le32_to_cpu(
1496 anchor->reserveVolDescSeqExt.extLength);
1497 reserve_e = reserve_e >> sb->s_blocksize_bits;
1498 reserve_e += reserve_s;
1502 /* Process the main & reserve sequences */
1503 /* responsible for finding the PartitionDesc(s) */
1504 if (!(udf_process_sequence(sb, main_s, main_e,
1506 udf_process_sequence(sb, reserve_s, reserve_e,
1511 if (i == ARRAY_SIZE(sbi->s_anchor)) {
1512 udf_debug("No Anchor block found\n");
1515 udf_debug("Using anchor in block %d\n", sbi->s_anchor[i]);
1517 for (i = 0; i < sbi->s_partitions; i++) {
1518 kernel_lb_addr uninitialized_var(ino);
1519 struct udf_part_map *map = &sbi->s_partmaps[i];
1520 switch (map->s_partition_type) {
1521 case UDF_VIRTUAL_MAP15:
1522 case UDF_VIRTUAL_MAP20:
1523 if (!sbi->s_last_block) {
1524 sbi->s_last_block = udf_get_last_block(sb);
1525 udf_find_anchor(sb);
1528 if (!sbi->s_last_block) {
1529 udf_debug("Unable to determine Lastblock (For "
1530 "Virtual Partition)\n");
1534 for (j = 0; j < sbi->s_partitions; j++) {
1535 struct udf_part_map *map2 = &sbi->s_partmaps[j];
1537 map->s_volumeseqnum ==
1538 map2->s_volumeseqnum &&
1539 map->s_partition_num ==
1540 map2->s_partition_num) {
1541 ino.partitionReferenceNum = j;
1542 ino.logicalBlockNum =
1544 map2->s_partition_root;
1549 if (j == sbi->s_partitions)
1552 sbi->s_vat_inode = udf_iget(sb, ino);
1553 if (!sbi->s_vat_inode)
1556 if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
1557 map->s_type_specific.s_virtual.s_start_offset =
1558 udf_ext0_offset(sbi->s_vat_inode);
1559 map->s_type_specific.s_virtual.s_num_entries =
1560 (sbi->s_vat_inode->i_size - 36) >> 2;
1561 } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
1563 struct virtualAllocationTable20 *vat20;
1565 pos = udf_block_map(sbi->s_vat_inode, 0);
1566 bh = sb_bread(sb, pos);
1569 vat20 = (struct virtualAllocationTable20 *)
1571 udf_ext0_offset(sbi->s_vat_inode);
1572 map->s_type_specific.s_virtual.s_start_offset =
1573 le16_to_cpu(vat20->lengthHeader) +
1574 udf_ext0_offset(sbi->s_vat_inode);
1575 map->s_type_specific.s_virtual.s_num_entries =
1576 (sbi->s_vat_inode->i_size -
1577 map->s_type_specific.s_virtual.
1578 s_start_offset) >> 2;
1581 map->s_partition_root = udf_get_pblock(sb, 0, i, 0);
1582 map->s_partition_len =
1583 sbi->s_partmaps[ino.partitionReferenceNum].
1590 static void udf_open_lvid(struct super_block *sb)
1592 struct udf_sb_info *sbi = UDF_SB(sb);
1593 struct buffer_head *bh = sbi->s_lvid_bh;
1595 kernel_timestamp cpu_time;
1596 struct logicalVolIntegrityDesc *lvid =
1597 (struct logicalVolIntegrityDesc *)bh->b_data;
1598 struct logicalVolIntegrityDescImpUse *lvidiu =
1601 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1602 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1603 if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
1604 lvid->recordingDateAndTime = cpu_to_lets(cpu_time);
1605 lvid->integrityType = LVID_INTEGRITY_TYPE_OPEN;
1607 lvid->descTag.descCRC = cpu_to_le16(
1608 udf_crc((char *)lvid + sizeof(tag),
1609 le16_to_cpu(lvid->descTag.descCRCLength),
1612 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
1613 mark_buffer_dirty(bh);
1617 static void udf_close_lvid(struct super_block *sb)
1619 kernel_timestamp cpu_time;
1620 struct udf_sb_info *sbi = UDF_SB(sb);
1621 struct buffer_head *bh = sbi->s_lvid_bh;
1622 struct logicalVolIntegrityDesc *lvid;
1627 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1629 if (lvid->integrityType == LVID_INTEGRITY_TYPE_OPEN) {
1630 struct logicalVolIntegrityDescImpUse *lvidiu =
1632 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1633 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1634 if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
1635 lvid->recordingDateAndTime = cpu_to_lets(cpu_time);
1636 if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
1637 lvidiu->maxUDFWriteRev =
1638 cpu_to_le16(UDF_MAX_WRITE_VERSION);
1639 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
1640 lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
1641 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
1642 lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
1643 lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
1645 lvid->descTag.descCRC = cpu_to_le16(
1646 udf_crc((char *)lvid + sizeof(tag),
1647 le16_to_cpu(lvid->descTag.descCRCLength),
1650 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
1651 mark_buffer_dirty(bh);
1655 static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
1658 int nr_groups = bitmap->s_nr_groups;
1659 int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) *
1662 for (i = 0; i < nr_groups; i++)
1663 if (bitmap->s_block_bitmap[i])
1664 brelse(bitmap->s_block_bitmap[i]);
1666 if (size <= PAGE_SIZE)
1672 static int udf_fill_super(struct super_block *sb, void *options, int silent)
1675 struct inode *inode = NULL;
1676 struct udf_options uopt;
1677 kernel_lb_addr rootdir, fileset;
1678 struct udf_sb_info *sbi;
1680 uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT);
1685 sbi = kzalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
1689 sb->s_fs_info = sbi;
1691 mutex_init(&sbi->s_alloc_mutex);
1693 if (!udf_parse_options((char *)options, &uopt, false))
1696 if (uopt.flags & (1 << UDF_FLAG_UTF8) &&
1697 uopt.flags & (1 << UDF_FLAG_NLS_MAP)) {
1698 udf_error(sb, "udf_read_super",
1699 "utf8 cannot be combined with iocharset\n");
1702 #ifdef CONFIG_UDF_NLS
1703 if ((uopt.flags & (1 << UDF_FLAG_NLS_MAP)) && !uopt.nls_map) {
1704 uopt.nls_map = load_nls_default();
1706 uopt.flags &= ~(1 << UDF_FLAG_NLS_MAP);
1708 udf_debug("Using default NLS map\n");
1711 if (!(uopt.flags & (1 << UDF_FLAG_NLS_MAP)))
1712 uopt.flags |= (1 << UDF_FLAG_UTF8);
1714 fileset.logicalBlockNum = 0xFFFFFFFF;
1715 fileset.partitionReferenceNum = 0xFFFF;
1717 sbi->s_flags = uopt.flags;
1718 sbi->s_uid = uopt.uid;
1719 sbi->s_gid = uopt.gid;
1720 sbi->s_umask = uopt.umask;
1721 sbi->s_nls_map = uopt.nls_map;
1723 /* Set the block size for all transfers */
1724 if (!sb_min_blocksize(sb, uopt.blocksize)) {
1725 udf_debug("Bad block size (%d)\n", uopt.blocksize);
1726 printk(KERN_ERR "udf: bad block size (%d)\n", uopt.blocksize);
1730 if (uopt.session == 0xFFFFFFFF)
1731 sbi->s_session = udf_get_last_session(sb);
1733 sbi->s_session = uopt.session;
1735 udf_debug("Multi-session=%d\n", sbi->s_session);
1737 sbi->s_last_block = uopt.lastblock;
1738 sbi->s_anchor[0] = sbi->s_anchor[1] = 0;
1739 sbi->s_anchor[2] = uopt.anchor;
1740 sbi->s_anchor[3] = 256;
1742 if (udf_check_valid(sb, uopt.novrs, silent)) {
1743 /* read volume recognition sequences */
1744 printk(KERN_WARNING "UDF-fs: No VRS found\n");
1748 udf_find_anchor(sb);
1750 /* Fill in the rest of the superblock */
1751 sb->s_op = &udf_sb_ops;
1754 sb->s_magic = UDF_SUPER_MAGIC;
1755 sb->s_time_gran = 1000;
1757 if (udf_load_partition(sb, &fileset)) {
1758 printk(KERN_WARNING "UDF-fs: No partition found (1)\n");
1762 udf_debug("Lastblock=%d\n", sbi->s_last_block);
1764 if (sbi->s_lvid_bh) {
1765 struct logicalVolIntegrityDescImpUse *lvidiu =
1767 uint16_t minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev);
1768 uint16_t minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev);
1769 /* uint16_t maxUDFWriteRev =
1770 le16_to_cpu(lvidiu->maxUDFWriteRev); */
1772 if (minUDFReadRev > UDF_MAX_READ_VERSION) {
1773 printk(KERN_ERR "UDF-fs: minUDFReadRev=%x "
1775 le16_to_cpu(lvidiu->minUDFReadRev),
1776 UDF_MAX_READ_VERSION);
1778 } else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION)
1779 sb->s_flags |= MS_RDONLY;
1781 sbi->s_udfrev = minUDFWriteRev;
1783 if (minUDFReadRev >= UDF_VERS_USE_EXTENDED_FE)
1784 UDF_SET_FLAG(sb, UDF_FLAG_USE_EXTENDED_FE);
1785 if (minUDFReadRev >= UDF_VERS_USE_STREAMS)
1786 UDF_SET_FLAG(sb, UDF_FLAG_USE_STREAMS);
1789 if (!sbi->s_partitions) {
1790 printk(KERN_WARNING "UDF-fs: No partition found (2)\n");
1794 if (sbi->s_partmaps[sbi->s_partition].s_partition_flags &
1795 UDF_PART_FLAG_READ_ONLY) {
1796 printk(KERN_NOTICE "UDF-fs: Partition marked readonly; "
1797 "forcing readonly mount\n");
1798 sb->s_flags |= MS_RDONLY;
1801 if (udf_find_fileset(sb, &fileset, &rootdir)) {
1802 printk(KERN_WARNING "UDF-fs: No fileset found\n");
1807 kernel_timestamp ts;
1808 udf_time_to_stamp(&ts, sbi->s_record_time);
1809 udf_info("UDF: Mounting volume '%s', "
1810 "timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
1811 sbi->s_volume_ident, ts.year, ts.month, ts.day,
1812 ts.hour, ts.minute, ts.typeAndTimezone);
1814 if (!(sb->s_flags & MS_RDONLY))
1817 /* Assign the root inode */
1818 /* assign inodes by physical block number */
1819 /* perhaps it's not extensible enough, but for now ... */
1820 inode = udf_iget(sb, rootdir);
1822 printk(KERN_ERR "UDF-fs: Error in udf_iget, block=%d, "
1824 rootdir.logicalBlockNum, rootdir.partitionReferenceNum);
1828 /* Allocate a dentry for the root inode */
1829 sb->s_root = d_alloc_root(inode);
1831 printk(KERN_ERR "UDF-fs: Couldn't allocate root dentry\n");
1835 sb->s_maxbytes = MAX_LFS_FILESIZE;
1839 if (sbi->s_vat_inode)
1840 iput(sbi->s_vat_inode);
1841 if (sbi->s_partitions) {
1842 struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition];
1843 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
1844 iput(map->s_uspace.s_table);
1845 if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
1846 iput(map->s_fspace.s_table);
1847 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
1848 udf_sb_free_bitmap(map->s_uspace.s_bitmap);
1849 if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
1850 udf_sb_free_bitmap(map->s_fspace.s_bitmap);
1851 if (map->s_partition_type == UDF_SPARABLE_MAP15)
1852 for (i = 0; i < 4; i++)
1853 brelse(map->s_type_specific.s_sparing.
1856 #ifdef CONFIG_UDF_NLS
1857 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
1858 unload_nls(sbi->s_nls_map);
1860 if (!(sb->s_flags & MS_RDONLY))
1862 brelse(sbi->s_lvid_bh);
1864 kfree(sbi->s_partmaps);
1866 sb->s_fs_info = NULL;
1871 void udf_error(struct super_block *sb, const char *function,
1872 const char *fmt, ...)
1876 if (!(sb->s_flags & MS_RDONLY)) {
1880 va_start(args, fmt);
1881 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
1883 printk(KERN_CRIT "UDF-fs error (device %s): %s: %s\n",
1884 sb->s_id, function, error_buf);
1887 void udf_warning(struct super_block *sb, const char *function,
1888 const char *fmt, ...)
1892 va_start(args, fmt);
1893 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
1895 printk(KERN_WARNING "UDF-fs warning (device %s): %s: %s\n",
1896 sb->s_id, function, error_buf);
1899 static void udf_put_super(struct super_block *sb)
1902 struct udf_sb_info *sbi;
1905 if (sbi->s_vat_inode)
1906 iput(sbi->s_vat_inode);
1907 if (sbi->s_partitions) {
1908 struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition];
1909 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
1910 iput(map->s_uspace.s_table);
1911 if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
1912 iput(map->s_fspace.s_table);
1913 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
1914 udf_sb_free_bitmap(map->s_uspace.s_bitmap);
1915 if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
1916 udf_sb_free_bitmap(map->s_fspace.s_bitmap);
1917 if (map->s_partition_type == UDF_SPARABLE_MAP15)
1918 for (i = 0; i < 4; i++)
1919 brelse(map->s_type_specific.s_sparing.
1922 #ifdef CONFIG_UDF_NLS
1923 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
1924 unload_nls(sbi->s_nls_map);
1926 if (!(sb->s_flags & MS_RDONLY))
1928 brelse(sbi->s_lvid_bh);
1929 kfree(sbi->s_partmaps);
1930 kfree(sb->s_fs_info);
1931 sb->s_fs_info = NULL;
1934 static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
1936 struct super_block *sb = dentry->d_sb;
1937 struct udf_sb_info *sbi = UDF_SB(sb);
1938 struct logicalVolIntegrityDescImpUse *lvidiu;
1940 if (sbi->s_lvid_bh != NULL)
1941 lvidiu = udf_sb_lvidiu(sbi);
1945 buf->f_type = UDF_SUPER_MAGIC;
1946 buf->f_bsize = sb->s_blocksize;
1947 buf->f_blocks = sbi->s_partmaps[sbi->s_partition].s_partition_len;
1948 buf->f_bfree = udf_count_free(sb);
1949 buf->f_bavail = buf->f_bfree;
1950 buf->f_files = (lvidiu != NULL ? (le32_to_cpu(lvidiu->numFiles) +
1951 le32_to_cpu(lvidiu->numDirs)) : 0)
1953 buf->f_ffree = buf->f_bfree;
1954 /* __kernel_fsid_t f_fsid */
1955 buf->f_namelen = UDF_NAME_LEN - 2;
1960 static unsigned char udf_bitmap_lookup[16] = {
1961 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
1964 static unsigned int udf_count_free_bitmap(struct super_block *sb,
1965 struct udf_bitmap *bitmap)
1967 struct buffer_head *bh = NULL;
1968 unsigned int accum = 0;
1970 int block = 0, newblock;
1976 struct spaceBitmapDesc *bm;
1980 loc.logicalBlockNum = bitmap->s_extPosition;
1981 loc.partitionReferenceNum = UDF_SB(sb)->s_partition;
1982 bh = udf_read_ptagged(sb, loc, 0, &ident);
1985 printk(KERN_ERR "udf: udf_count_free failed\n");
1987 } else if (ident != TAG_IDENT_SBD) {
1989 printk(KERN_ERR "udf: udf_count_free failed\n");
1993 bm = (struct spaceBitmapDesc *)bh->b_data;
1994 bytes = le32_to_cpu(bm->numOfBytes);
1995 index = sizeof(struct spaceBitmapDesc); /* offset in first block only */
1996 ptr = (uint8_t *)bh->b_data;
1999 while ((bytes > 0) && (index < sb->s_blocksize)) {
2001 accum += udf_bitmap_lookup[value & 0x0f];
2002 accum += udf_bitmap_lookup[value >> 4];
2008 newblock = udf_get_lb_pblock(sb, loc, ++block);
2009 bh = udf_tread(sb, newblock);
2011 udf_debug("read failed\n");
2015 ptr = (uint8_t *)bh->b_data;
2026 static unsigned int udf_count_free_table(struct super_block *sb,
2027 struct inode *table)
2029 unsigned int accum = 0;
2031 kernel_lb_addr eloc;
2033 struct extent_position epos;
2037 epos.block = UDF_I(table)->i_location;
2038 epos.offset = sizeof(struct unallocSpaceEntry);
2041 while ((etype = udf_next_aext(table, &epos, &eloc, &elen, 1)) != -1)
2042 accum += (elen >> table->i_sb->s_blocksize_bits);
2051 static unsigned int udf_count_free(struct super_block *sb)
2053 unsigned int accum = 0;
2054 struct udf_sb_info *sbi;
2055 struct udf_part_map *map;
2058 if (sbi->s_lvid_bh) {
2059 struct logicalVolIntegrityDesc *lvid =
2060 (struct logicalVolIntegrityDesc *)
2061 sbi->s_lvid_bh->b_data;
2062 if (le32_to_cpu(lvid->numOfPartitions) > sbi->s_partition) {
2063 accum = le32_to_cpu(
2064 lvid->freeSpaceTable[sbi->s_partition]);
2065 if (accum == 0xFFFFFFFF)
2073 map = &sbi->s_partmaps[sbi->s_partition];
2074 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) {
2075 accum += udf_count_free_bitmap(sb,
2076 map->s_uspace.s_bitmap);
2078 if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) {
2079 accum += udf_count_free_bitmap(sb,
2080 map->s_fspace.s_bitmap);
2085 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) {
2086 accum += udf_count_free_table(sb,
2087 map->s_uspace.s_table);
2089 if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) {
2090 accum += udf_count_free_table(sb,
2091 map->s_fspace.s_table);