5 * Super block routines for the OSTA-UDF(tm) filesystem.
8 * OSTA-UDF(tm) = Optical Storage Technology Association
9 * Universal Disk Format.
11 * This code is based on version 2.00 of the UDF specification,
12 * and revision 3 of the ECMA 167 standard [equivalent to ISO 13346].
13 * http://www.osta.org/
18 * This file is distributed under the terms of the GNU General Public
19 * License (GPL). Copies of the GPL can be obtained from:
20 * ftp://prep.ai.mit.edu/pub/gnu/GPL
21 * Each contributing author retains all rights to their own work.
23 * (C) 1998 Dave Boynton
24 * (C) 1998-2004 Ben Fennema
25 * (C) 2000 Stelias Computing Inc
29 * 09/24/98 dgb changed to allow compiling outside of kernel, and
30 * added some debugging.
31 * 10/01/98 dgb updated to allow (some) possibility of compiling w/2.0.34
32 * 10/16/98 attempting some multi-session support
33 * 10/17/98 added freespace count for "df"
34 * 11/11/98 gr added novrs option
35 * 11/26/98 dgb added fileset,anchor mount options
36 * 12/06/98 blf really hosed things royally. vat/sparing support. sequenced
37 * vol descs. rewrote option handling based on isofs
38 * 12/20/98 find the free space bitmap (if it exists)
43 #include <linux/blkdev.h>
44 #include <linux/slab.h>
45 #include <linux/kernel.h>
46 #include <linux/module.h>
47 #include <linux/parser.h>
48 #include <linux/stat.h>
49 #include <linux/cdrom.h>
50 #include <linux/nls.h>
51 #include <linux/smp_lock.h>
52 #include <linux/buffer_head.h>
53 #include <linux/vfs.h>
54 #include <linux/vmalloc.h>
55 #include <linux/errno.h>
56 #include <linux/mount.h>
57 #include <linux/seq_file.h>
58 #include <linux/bitmap.h>
59 #include <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 static char error_buf[1024];
80 /* These are the "meat" - everything else is stuffing */
81 static int udf_fill_super(struct super_block *, void *, int);
82 static void udf_put_super(struct super_block *);
83 static void udf_write_super(struct super_block *);
84 static int udf_remount_fs(struct super_block *, int *, char *);
85 static int udf_check_valid(struct super_block *, int, int);
86 static int udf_vrs(struct super_block *sb, int silent);
87 static int udf_load_partition(struct super_block *, kernel_lb_addr *);
88 static void udf_load_logicalvolint(struct super_block *, kernel_extent_ad);
89 static void udf_find_anchor(struct super_block *);
90 static int udf_find_fileset(struct super_block *, kernel_lb_addr *,
92 static void udf_load_fileset(struct super_block *, struct buffer_head *,
94 static void udf_open_lvid(struct super_block *);
95 static void udf_close_lvid(struct super_block *);
96 static unsigned int udf_count_free(struct super_block *);
97 static int udf_statfs(struct dentry *, struct kstatfs *);
98 static int udf_show_options(struct seq_file *, struct vfsmount *);
99 static void udf_error(struct super_block *sb, const char *function,
100 const char *fmt, ...);
102 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi)
104 struct logicalVolIntegrityDesc *lvid =
105 (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data;
106 __u32 number_of_partitions = le32_to_cpu(lvid->numOfPartitions);
107 __u32 offset = number_of_partitions * 2 *
108 sizeof(uint32_t)/sizeof(uint8_t);
109 return (struct logicalVolIntegrityDescImpUse *)&(lvid->impUse[offset]);
112 /* UDF filesystem type */
113 static int udf_get_sb(struct file_system_type *fs_type,
114 int flags, const char *dev_name, void *data,
115 struct vfsmount *mnt)
117 return get_sb_bdev(fs_type, flags, dev_name, data, udf_fill_super, mnt);
120 static struct file_system_type udf_fstype = {
121 .owner = THIS_MODULE,
123 .get_sb = udf_get_sb,
124 .kill_sb = kill_block_super,
125 .fs_flags = FS_REQUIRES_DEV,
128 static struct kmem_cache *udf_inode_cachep;
130 static struct inode *udf_alloc_inode(struct super_block *sb)
132 struct udf_inode_info *ei;
133 ei = kmem_cache_alloc(udf_inode_cachep, GFP_KERNEL);
138 ei->i_lenExtents = 0;
139 ei->i_next_alloc_block = 0;
140 ei->i_next_alloc_goal = 0;
143 return &ei->vfs_inode;
146 static void udf_destroy_inode(struct inode *inode)
148 kmem_cache_free(udf_inode_cachep, UDF_I(inode));
151 static void init_once(struct kmem_cache *cachep, void *foo)
153 struct udf_inode_info *ei = (struct udf_inode_info *)foo;
155 ei->i_ext.i_data = NULL;
156 inode_init_once(&ei->vfs_inode);
159 static int init_inodecache(void)
161 udf_inode_cachep = kmem_cache_create("udf_inode_cache",
162 sizeof(struct udf_inode_info),
163 0, (SLAB_RECLAIM_ACCOUNT |
166 if (!udf_inode_cachep)
171 static void destroy_inodecache(void)
173 kmem_cache_destroy(udf_inode_cachep);
176 /* Superblock operations */
177 static const struct super_operations udf_sb_ops = {
178 .alloc_inode = udf_alloc_inode,
179 .destroy_inode = udf_destroy_inode,
180 .write_inode = udf_write_inode,
181 .delete_inode = udf_delete_inode,
182 .clear_inode = udf_clear_inode,
183 .put_super = udf_put_super,
184 .write_super = udf_write_super,
185 .statfs = udf_statfs,
186 .remount_fs = udf_remount_fs,
187 .show_options = udf_show_options,
192 unsigned int blocksize;
193 unsigned int session;
194 unsigned int lastblock;
197 unsigned short partition;
198 unsigned int fileset;
199 unsigned int rootdir;
204 struct nls_table *nls_map;
207 static int __init init_udf_fs(void)
211 err = init_inodecache();
214 err = register_filesystem(&udf_fstype);
221 destroy_inodecache();
227 static void __exit exit_udf_fs(void)
229 unregister_filesystem(&udf_fstype);
230 destroy_inodecache();
233 module_init(init_udf_fs)
234 module_exit(exit_udf_fs)
236 static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count)
238 struct udf_sb_info *sbi = UDF_SB(sb);
240 sbi->s_partmaps = kcalloc(count, sizeof(struct udf_part_map),
242 if (!sbi->s_partmaps) {
243 udf_error(sb, __FUNCTION__,
244 "Unable to allocate space for %d partition maps",
246 sbi->s_partitions = 0;
250 sbi->s_partitions = count;
254 static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt)
256 struct super_block *sb = mnt->mnt_sb;
257 struct udf_sb_info *sbi = UDF_SB(sb);
259 if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT))
260 seq_puts(seq, ",nostrict");
261 if (sb->s_blocksize != UDF_DEFAULT_BLOCKSIZE)
262 seq_printf(seq, ",bs=%lu", sb->s_blocksize);
263 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE))
264 seq_puts(seq, ",unhide");
265 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNDELETE))
266 seq_puts(seq, ",undelete");
267 if (!UDF_QUERY_FLAG(sb, UDF_FLAG_USE_AD_IN_ICB))
268 seq_puts(seq, ",noadinicb");
269 if (UDF_QUERY_FLAG(sb, UDF_FLAG_USE_SHORT_AD))
270 seq_puts(seq, ",shortad");
271 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_FORGET))
272 seq_puts(seq, ",uid=forget");
273 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_IGNORE))
274 seq_puts(seq, ",uid=ignore");
275 if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_FORGET))
276 seq_puts(seq, ",gid=forget");
277 if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_IGNORE))
278 seq_puts(seq, ",gid=ignore");
279 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
280 seq_printf(seq, ",uid=%u", sbi->s_uid);
281 if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
282 seq_printf(seq, ",gid=%u", sbi->s_gid);
283 if (sbi->s_umask != 0)
284 seq_printf(seq, ",umask=%o", sbi->s_umask);
285 if (UDF_QUERY_FLAG(sb, UDF_FLAG_SESSION_SET))
286 seq_printf(seq, ",session=%u", sbi->s_session);
287 if (UDF_QUERY_FLAG(sb, UDF_FLAG_LASTBLOCK_SET))
288 seq_printf(seq, ",lastblock=%u", sbi->s_last_block);
290 * s_anchor[2] could be zeroed out in case there is no anchor
291 * in the specified block, but then the "anchor=N" option
292 * originally given by the user wasn't effective, so it's OK
293 * if we don't show it.
295 if (sbi->s_anchor[2] != 0)
296 seq_printf(seq, ",anchor=%u", sbi->s_anchor[2]);
298 * volume, partition, fileset and rootdir seem to be ignored
301 if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8))
302 seq_puts(seq, ",utf8");
303 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP) && sbi->s_nls_map)
304 seq_printf(seq, ",iocharset=%s", sbi->s_nls_map->charset);
313 * Parse mount options.
316 * The following mount options are supported:
318 * gid= Set the default group.
319 * umask= Set the default umask.
320 * uid= Set the default user.
321 * bs= Set the block size.
322 * unhide Show otherwise hidden files.
323 * undelete Show deleted files in lists.
324 * adinicb Embed data in the inode (default)
325 * noadinicb Don't embed data in the inode
326 * shortad Use short ad's
327 * longad Use long ad's (default)
328 * nostrict Unset strict conformance
329 * iocharset= Set the NLS character set
331 * The remaining are for debugging and disaster recovery:
333 * novrs Skip volume sequence recognition
335 * The following expect a offset from 0.
337 * session= Set the CDROM session (default= last session)
338 * anchor= Override standard anchor location. (default= 256)
339 * volume= Override the VolumeDesc location. (unused)
340 * partition= Override the PartitionDesc location. (unused)
341 * lastblock= Set the last block of the filesystem/
343 * The following expect a offset from the partition root.
345 * fileset= Override the fileset block location. (unused)
346 * rootdir= Override the root directory location. (unused)
347 * WARNING: overriding the rootdir to a non-directory may
348 * yield highly unpredictable results.
351 * options Pointer to mount options string.
352 * uopts Pointer to mount options variable.
355 * <return> 1 Mount options parsed okay.
356 * <return> 0 Error parsing mount options.
359 * July 1, 1997 - Andrew E. Mileski
360 * Written, tested, and released.
364 Opt_novrs, Opt_nostrict, Opt_bs, Opt_unhide, Opt_undelete,
365 Opt_noadinicb, Opt_adinicb, Opt_shortad, Opt_longad,
366 Opt_gid, Opt_uid, Opt_umask, Opt_session, Opt_lastblock,
367 Opt_anchor, Opt_volume, Opt_partition, Opt_fileset,
368 Opt_rootdir, Opt_utf8, Opt_iocharset,
369 Opt_err, Opt_uforget, Opt_uignore, Opt_gforget, Opt_gignore
372 static match_table_t tokens = {
373 {Opt_novrs, "novrs"},
374 {Opt_nostrict, "nostrict"},
376 {Opt_unhide, "unhide"},
377 {Opt_undelete, "undelete"},
378 {Opt_noadinicb, "noadinicb"},
379 {Opt_adinicb, "adinicb"},
380 {Opt_shortad, "shortad"},
381 {Opt_longad, "longad"},
382 {Opt_uforget, "uid=forget"},
383 {Opt_uignore, "uid=ignore"},
384 {Opt_gforget, "gid=forget"},
385 {Opt_gignore, "gid=ignore"},
388 {Opt_umask, "umask=%o"},
389 {Opt_session, "session=%u"},
390 {Opt_lastblock, "lastblock=%u"},
391 {Opt_anchor, "anchor=%u"},
392 {Opt_volume, "volume=%u"},
393 {Opt_partition, "partition=%u"},
394 {Opt_fileset, "fileset=%u"},
395 {Opt_rootdir, "rootdir=%u"},
397 {Opt_iocharset, "iocharset=%s"},
401 static int udf_parse_options(char *options, struct udf_options *uopt,
408 uopt->blocksize = UDF_DEFAULT_BLOCKSIZE;
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);
432 if (match_int(&args[0], &option))
434 uopt->blocksize = option;
437 uopt->flags |= (1 << UDF_FLAG_UNHIDE);
440 uopt->flags |= (1 << UDF_FLAG_UNDELETE);
443 uopt->flags &= ~(1 << UDF_FLAG_USE_AD_IN_ICB);
446 uopt->flags |= (1 << UDF_FLAG_USE_AD_IN_ICB);
449 uopt->flags |= (1 << UDF_FLAG_USE_SHORT_AD);
452 uopt->flags &= ~(1 << UDF_FLAG_USE_SHORT_AD);
455 if (match_int(args, &option))
458 uopt->flags |= (1 << UDF_FLAG_GID_SET);
461 if (match_int(args, &option))
464 uopt->flags |= (1 << UDF_FLAG_UID_SET);
467 if (match_octal(args, &option))
469 uopt->umask = option;
472 uopt->flags &= ~(1 << UDF_FLAG_STRICT);
475 if (match_int(args, &option))
477 uopt->session = option;
479 uopt->flags |= (1 << UDF_FLAG_SESSION_SET);
482 if (match_int(args, &option))
484 uopt->lastblock = option;
486 uopt->flags |= (1 << UDF_FLAG_LASTBLOCK_SET);
489 if (match_int(args, &option))
491 uopt->anchor = option;
494 if (match_int(args, &option))
496 uopt->volume = option;
499 if (match_int(args, &option))
501 uopt->partition = option;
504 if (match_int(args, &option))
506 uopt->fileset = option;
509 if (match_int(args, &option))
511 uopt->rootdir = option;
514 uopt->flags |= (1 << UDF_FLAG_UTF8);
516 #ifdef CONFIG_UDF_NLS
518 uopt->nls_map = load_nls(args[0].from);
519 uopt->flags |= (1 << UDF_FLAG_NLS_MAP);
523 uopt->flags |= (1 << UDF_FLAG_UID_IGNORE);
526 uopt->flags |= (1 << UDF_FLAG_UID_FORGET);
529 uopt->flags |= (1 << UDF_FLAG_GID_IGNORE);
532 uopt->flags |= (1 << UDF_FLAG_GID_FORGET);
535 printk(KERN_ERR "udf: bad mount option \"%s\" "
536 "or missing value\n", p);
543 static void udf_write_super(struct super_block *sb)
547 if (!(sb->s_flags & MS_RDONLY))
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);
559 uopt.flags = sbi->s_flags;
560 uopt.uid = sbi->s_uid;
561 uopt.gid = sbi->s_gid;
562 uopt.umask = sbi->s_umask;
564 if (!udf_parse_options(options, &uopt, true))
567 sbi->s_flags = uopt.flags;
568 sbi->s_uid = uopt.uid;
569 sbi->s_gid = uopt.gid;
570 sbi->s_umask = uopt.umask;
572 if (sbi->s_lvid_bh) {
573 int write_rev = le16_to_cpu(udf_sb_lvidiu(sbi)->minUDFWriteRev);
574 if (write_rev > UDF_MAX_WRITE_VERSION)
578 if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
580 if (*flags & MS_RDONLY)
588 static int udf_vrs(struct super_block *sb, int silent)
590 struct volStructDesc *vsd = NULL;
593 struct buffer_head *bh = NULL;
597 struct udf_sb_info *sbi;
599 /* Block size must be a multiple of 512 */
600 if (sb->s_blocksize & 511)
604 if (sb->s_blocksize < sizeof(struct volStructDesc))
605 sectorsize = sizeof(struct volStructDesc);
607 sectorsize = sb->s_blocksize;
609 sector += (sbi->s_session << sb->s_blocksize_bits);
611 udf_debug("Starting at sector %u (%ld byte sectors)\n",
612 (sector >> sb->s_blocksize_bits), sb->s_blocksize);
613 /* Process the sequence (if applicable) */
614 for (; !nsr02 && !nsr03; sector += sectorsize) {
616 bh = udf_tread(sb, sector >> sb->s_blocksize_bits);
620 /* Look for ISO descriptors */
621 vsd = (struct volStructDesc *)(bh->b_data +
622 (sector & (sb->s_blocksize - 1)));
624 if (vsd->stdIdent[0] == 0) {
627 } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001,
630 switch (vsd->structType) {
632 udf_debug("ISO9660 Boot Record found\n");
635 udf_debug("ISO9660 Primary Volume Descriptor "
639 udf_debug("ISO9660 Supplementary Volume "
640 "Descriptor found\n");
643 udf_debug("ISO9660 Volume Partition Descriptor "
647 udf_debug("ISO9660 Volume Descriptor Set "
648 "Terminator found\n");
651 udf_debug("ISO9660 VRS (%u) found\n",
655 } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BEA01,
658 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_TEA01,
662 } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR02,
665 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR03,
675 else if (sector - (sbi->s_session << sb->s_blocksize_bits) == 32768)
685 * Find an anchor volume descriptor.
688 * sb Pointer to _locked_ superblock.
689 * lastblock Last block on media.
692 * <return> 1 if not found, 0 if ok
695 * July 1, 1997 - Andrew E. Mileski
696 * Written, tested, and released.
698 static void udf_find_anchor(struct super_block *sb)
701 struct buffer_head *bh = NULL;
705 struct udf_sb_info *sbi;
708 lastblock = sbi->s_last_block;
711 int varlastblock = udf_variable_to_fixed(lastblock);
712 int last[] = { lastblock, lastblock - 2,
713 lastblock - 150, lastblock - 152,
714 varlastblock, varlastblock - 2,
715 varlastblock - 150, varlastblock - 152 };
719 /* Search for an anchor volume descriptor pointer */
721 /* according to spec, anchor is in either:
725 * however, if the disc isn't closed, it could be 512 */
727 for (i = 0; !lastblock && i < ARRAY_SIZE(last); i++) {
728 ident = location = 0;
730 bh = sb_bread(sb, last[i]);
732 tag *t = (tag *)bh->b_data;
733 ident = le16_to_cpu(t->tagIdent);
734 location = le32_to_cpu(t->tagLocation);
739 if (ident == TAG_IDENT_AVDP) {
740 if (location == last[i] - sbi->s_session) {
741 lastblock = last[i] - sbi->s_session;
742 sbi->s_anchor[0] = lastblock;
743 sbi->s_anchor[1] = lastblock - 256;
744 } else if (location ==
745 udf_variable_to_fixed(last[i]) -
747 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
749 udf_variable_to_fixed(last[i]) -
751 sbi->s_anchor[0] = lastblock;
752 sbi->s_anchor[1] = lastblock - 256 -
755 udf_debug("Anchor found at block %d, "
756 "location mismatch %d.\n",
759 } else if (ident == TAG_IDENT_FE ||
760 ident == TAG_IDENT_EFE) {
762 sbi->s_anchor[3] = 512;
764 ident = location = 0;
765 if (last[i] >= 256) {
766 bh = sb_bread(sb, last[i] - 256);
768 tag *t = (tag *)bh->b_data;
771 location = le32_to_cpu(
777 if (ident == TAG_IDENT_AVDP &&
778 location == last[i] - 256 -
781 sbi->s_anchor[1] = last[i] - 256;
783 ident = location = 0;
784 if (last[i] >= 312 + sbi->s_session) {
793 location = le32_to_cpu(
799 if (ident == TAG_IDENT_AVDP &&
800 location == udf_variable_to_fixed(last[i]) - 256) {
803 lastblock = udf_variable_to_fixed(last[i]);
804 sbi->s_anchor[1] = lastblock - 256;
812 /* We haven't found the lastblock. check 312 */
813 bh = sb_bread(sb, 312 + sbi->s_session);
815 tag *t = (tag *)bh->b_data;
816 ident = le16_to_cpu(t->tagIdent);
817 location = le32_to_cpu(t->tagLocation);
820 if (ident == TAG_IDENT_AVDP && location == 256)
821 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
825 for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
826 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;
841 sbi->s_last_block = lastblock;
844 static int udf_find_fileset(struct super_block *sb,
845 kernel_lb_addr *fileset,
846 kernel_lb_addr *root)
848 struct buffer_head *bh = NULL;
851 struct udf_sb_info *sbi;
853 if (fileset->logicalBlockNum != 0xFFFFFFFF ||
854 fileset->partitionReferenceNum != 0xFFFF) {
855 bh = udf_read_ptagged(sb, *fileset, 0, &ident);
859 } else if (ident != TAG_IDENT_FSD) {
868 /* Search backwards through the partitions */
869 kernel_lb_addr newfileset;
871 /* --> cvg: FIXME - is it reasonable? */
874 for (newfileset.partitionReferenceNum = sbi->s_partitions - 1;
875 (newfileset.partitionReferenceNum != 0xFFFF &&
876 fileset->logicalBlockNum == 0xFFFFFFFF &&
877 fileset->partitionReferenceNum == 0xFFFF);
878 newfileset.partitionReferenceNum--) {
879 lastblock = sbi->s_partmaps
880 [newfileset.partitionReferenceNum]
882 newfileset.logicalBlockNum = 0;
885 bh = udf_read_ptagged(sb, newfileset, 0,
888 newfileset.logicalBlockNum++;
895 struct spaceBitmapDesc *sp;
896 sp = (struct spaceBitmapDesc *)
898 newfileset.logicalBlockNum += 1 +
899 ((le32_to_cpu(sp->numOfBytes) +
900 sizeof(struct spaceBitmapDesc)
901 - 1) >> sb->s_blocksize_bits);
906 *fileset = newfileset;
909 newfileset.logicalBlockNum++;
914 } while (newfileset.logicalBlockNum < lastblock &&
915 fileset->logicalBlockNum == 0xFFFFFFFF &&
916 fileset->partitionReferenceNum == 0xFFFF);
920 if ((fileset->logicalBlockNum != 0xFFFFFFFF ||
921 fileset->partitionReferenceNum != 0xFFFF) && bh) {
922 udf_debug("Fileset at block=%d, partition=%d\n",
923 fileset->logicalBlockNum,
924 fileset->partitionReferenceNum);
926 sbi->s_partition = fileset->partitionReferenceNum;
927 udf_load_fileset(sb, bh, root);
934 static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
936 struct primaryVolDesc *pvoldesc;
939 struct buffer_head *bh;
942 bh = udf_read_tagged(sb, block, block, &ident);
945 BUG_ON(ident != TAG_IDENT_PVD);
947 pvoldesc = (struct primaryVolDesc *)bh->b_data;
949 if (udf_disk_stamp_to_time(&UDF_SB(sb)->s_record_time,
950 pvoldesc->recordingDateAndTime)) {
952 timestamp *ts = &pvoldesc->recordingDateAndTime;
953 udf_debug("recording time %04u/%02u/%02u"
955 le16_to_cpu(ts->year), ts->month, ts->day, ts->hour,
956 ts->minute, le16_to_cpu(ts->typeAndTimezone));
960 if (!udf_build_ustr(&instr, pvoldesc->volIdent, 32))
961 if (udf_CS0toUTF8(&outstr, &instr)) {
962 strncpy(UDF_SB(sb)->s_volume_ident, outstr.u_name,
963 outstr.u_len > 31 ? 31 : outstr.u_len);
964 udf_debug("volIdent[] = '%s'\n",
965 UDF_SB(sb)->s_volume_ident);
968 if (!udf_build_ustr(&instr, pvoldesc->volSetIdent, 128))
969 if (udf_CS0toUTF8(&outstr, &instr))
970 udf_debug("volSetIdent[] = '%s'\n", outstr.u_name);
976 static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
977 kernel_lb_addr *root)
979 struct fileSetDesc *fset;
981 fset = (struct fileSetDesc *)bh->b_data;
983 *root = lelb_to_cpu(fset->rootDirectoryICB.extLocation);
985 UDF_SB(sb)->s_serial_number = le16_to_cpu(fset->descTag.tagSerialNum);
987 udf_debug("Rootdir at block=%d, partition=%d\n",
988 root->logicalBlockNum, root->partitionReferenceNum);
991 int udf_compute_nr_groups(struct super_block *sb, u32 partition)
993 struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
994 return DIV_ROUND_UP(map->s_partition_len +
995 (sizeof(struct spaceBitmapDesc) << 3),
996 sb->s_blocksize * 8);
999 static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
1001 struct udf_bitmap *bitmap;
1005 nr_groups = udf_compute_nr_groups(sb, index);
1006 size = sizeof(struct udf_bitmap) +
1007 (sizeof(struct buffer_head *) * nr_groups);
1009 if (size <= PAGE_SIZE)
1010 bitmap = kmalloc(size, GFP_KERNEL);
1012 bitmap = vmalloc(size); /* TODO: get rid of vmalloc */
1014 if (bitmap == NULL) {
1015 udf_error(sb, __FUNCTION__,
1016 "Unable to allocate space for bitmap "
1017 "and %d buffer_head pointers", nr_groups);
1021 memset(bitmap, 0x00, size);
1022 bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1);
1023 bitmap->s_nr_groups = nr_groups;
1027 static int udf_load_partdesc(struct super_block *sb, sector_t block)
1029 struct buffer_head *bh;
1030 struct partitionHeaderDesc *phd;
1031 struct partitionDesc *p;
1032 struct udf_part_map *map;
1033 struct udf_sb_info *sbi = UDF_SB(sb);
1036 uint16_t partitionNumber;
1040 bh = udf_read_tagged(sb, block, block, &ident);
1043 if (ident != TAG_IDENT_PD)
1046 p = (struct partitionDesc *)bh->b_data;
1047 partitionNumber = le16_to_cpu(p->partitionNumber);
1048 for (i = 0; i < sbi->s_partitions; i++) {
1049 map = &sbi->s_partmaps[i];
1050 udf_debug("Searching map: (%d == %d)\n",
1051 map->s_partition_num, partitionNumber);
1052 found = map->s_partition_num == partitionNumber;
1058 udf_debug("Partition (%d) not found in partition map\n",
1063 map->s_partition_len = le32_to_cpu(p->partitionLength); /* blocks */
1064 map->s_partition_root = le32_to_cpu(p->partitionStartingLocation);
1066 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
1067 map->s_partition_flags |= UDF_PART_FLAG_READ_ONLY;
1068 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
1069 map->s_partition_flags |= UDF_PART_FLAG_WRITE_ONCE;
1070 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
1071 map->s_partition_flags |= UDF_PART_FLAG_REWRITABLE;
1072 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
1073 map->s_partition_flags |= UDF_PART_FLAG_OVERWRITABLE;
1075 udf_debug("Partition (%d:%d type %x) starts at physical %d, "
1076 "block length %d\n", partitionNumber, i,
1077 map->s_partition_type, map->s_partition_root,
1078 map->s_partition_len);
1080 if (strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR02) &&
1081 strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR03))
1084 phd = (struct partitionHeaderDesc *)p->partitionContentsUse;
1085 if (phd->unallocSpaceTable.extLength) {
1086 kernel_lb_addr loc = {
1087 .logicalBlockNum = le32_to_cpu(
1088 phd->unallocSpaceTable.extPosition),
1089 .partitionReferenceNum = i,
1092 map->s_uspace.s_table = udf_iget(sb, loc);
1093 if (!map->s_uspace.s_table) {
1094 udf_debug("cannot load unallocSpaceTable (part %d)\n",
1099 map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_TABLE;
1100 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1101 i, map->s_uspace.s_table->i_ino);
1104 if (phd->unallocSpaceBitmap.extLength) {
1105 struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, i);
1106 map->s_uspace.s_bitmap = bitmap;
1107 if (bitmap != NULL) {
1108 bitmap->s_extLength = le32_to_cpu(
1109 phd->unallocSpaceBitmap.extLength);
1110 bitmap->s_extPosition = le32_to_cpu(
1111 phd->unallocSpaceBitmap.extPosition);
1112 map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
1113 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
1114 i, bitmap->s_extPosition);
1118 if (phd->partitionIntegrityTable.extLength)
1119 udf_debug("partitionIntegrityTable (part %d)\n", i);
1121 if (phd->freedSpaceTable.extLength) {
1122 kernel_lb_addr loc = {
1123 .logicalBlockNum = le32_to_cpu(
1124 phd->freedSpaceTable.extPosition),
1125 .partitionReferenceNum = i,
1128 map->s_fspace.s_table = udf_iget(sb, loc);
1129 if (!map->s_fspace.s_table) {
1130 udf_debug("cannot load freedSpaceTable (part %d)\n", i);
1135 map->s_partition_flags |= UDF_PART_FLAG_FREED_TABLE;
1136 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1137 i, map->s_fspace.s_table->i_ino);
1140 if (phd->freedSpaceBitmap.extLength) {
1141 struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, i);
1142 map->s_fspace.s_bitmap = bitmap;
1143 if (bitmap != NULL) {
1144 bitmap->s_extLength = le32_to_cpu(
1145 phd->freedSpaceBitmap.extLength);
1146 bitmap->s_extPosition = le32_to_cpu(
1147 phd->freedSpaceBitmap.extPosition);
1148 map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
1149 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1150 i, bitmap->s_extPosition);
1159 static int udf_load_logicalvol(struct super_block *sb, sector_t block,
1160 kernel_lb_addr *fileset)
1162 struct logicalVolDesc *lvd;
1165 struct udf_sb_info *sbi = UDF_SB(sb);
1166 struct genericPartitionMap *gpm;
1168 struct buffer_head *bh;
1171 bh = udf_read_tagged(sb, block, block, &ident);
1174 BUG_ON(ident != TAG_IDENT_LVD);
1175 lvd = (struct logicalVolDesc *)bh->b_data;
1177 i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
1183 for (i = 0, offset = 0;
1184 i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength);
1185 i++, offset += gpm->partitionMapLength) {
1186 struct udf_part_map *map = &sbi->s_partmaps[i];
1187 gpm = (struct genericPartitionMap *)
1188 &(lvd->partitionMaps[offset]);
1189 type = gpm->partitionMapType;
1191 struct genericPartitionMap1 *gpm1 =
1192 (struct genericPartitionMap1 *)gpm;
1193 map->s_partition_type = UDF_TYPE1_MAP15;
1194 map->s_volumeseqnum = le16_to_cpu(gpm1->volSeqNum);
1195 map->s_partition_num = le16_to_cpu(gpm1->partitionNum);
1196 map->s_partition_func = NULL;
1197 } else if (type == 2) {
1198 struct udfPartitionMap2 *upm2 =
1199 (struct udfPartitionMap2 *)gpm;
1200 if (!strncmp(upm2->partIdent.ident, UDF_ID_VIRTUAL,
1201 strlen(UDF_ID_VIRTUAL))) {
1203 le16_to_cpu(((__le16 *)upm2->partIdent.
1205 if (suf == 0x0150) {
1206 map->s_partition_type =
1208 map->s_partition_func =
1209 udf_get_pblock_virt15;
1210 } else if (suf == 0x0200) {
1211 map->s_partition_type =
1213 map->s_partition_func =
1214 udf_get_pblock_virt20;
1216 } else if (!strncmp(upm2->partIdent.ident,
1218 strlen(UDF_ID_SPARABLE))) {
1220 struct sparingTable *st;
1221 struct sparablePartitionMap *spm =
1222 (struct sparablePartitionMap *)gpm;
1224 map->s_partition_type = UDF_SPARABLE_MAP15;
1225 map->s_type_specific.s_sparing.s_packet_len =
1226 le16_to_cpu(spm->packetLength);
1227 for (j = 0; j < spm->numSparingTables; j++) {
1228 struct buffer_head *bh2;
1231 spm->locSparingTable[j]);
1232 bh2 = udf_read_tagged(sb, loc, loc,
1234 map->s_type_specific.s_sparing.
1235 s_spar_map[j] = bh2;
1240 st = (struct sparingTable *)bh2->b_data;
1241 if (ident != 0 || strncmp(
1242 st->sparingIdent.ident,
1244 strlen(UDF_ID_SPARING))) {
1246 map->s_type_specific.s_sparing.
1247 s_spar_map[j] = NULL;
1250 map->s_partition_func = udf_get_pblock_spar15;
1252 udf_debug("Unknown ident: %s\n",
1253 upm2->partIdent.ident);
1256 map->s_volumeseqnum = le16_to_cpu(upm2->volSeqNum);
1257 map->s_partition_num = le16_to_cpu(upm2->partitionNum);
1259 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1260 i, map->s_partition_num, type,
1261 map->s_volumeseqnum);
1265 long_ad *la = (long_ad *)&(lvd->logicalVolContentsUse[0]);
1267 *fileset = lelb_to_cpu(la->extLocation);
1268 udf_debug("FileSet found in LogicalVolDesc at block=%d, "
1269 "partition=%d\n", fileset->logicalBlockNum,
1270 fileset->partitionReferenceNum);
1272 if (lvd->integritySeqExt.extLength)
1273 udf_load_logicalvolint(sb, leea_to_cpu(lvd->integritySeqExt));
1281 * udf_load_logicalvolint
1284 static void udf_load_logicalvolint(struct super_block *sb, kernel_extent_ad loc)
1286 struct buffer_head *bh = NULL;
1288 struct udf_sb_info *sbi = UDF_SB(sb);
1289 struct logicalVolIntegrityDesc *lvid;
1291 while (loc.extLength > 0 &&
1292 (bh = udf_read_tagged(sb, loc.extLocation,
1293 loc.extLocation, &ident)) &&
1294 ident == TAG_IDENT_LVID) {
1295 sbi->s_lvid_bh = bh;
1296 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1298 if (lvid->nextIntegrityExt.extLength)
1299 udf_load_logicalvolint(sb,
1300 leea_to_cpu(lvid->nextIntegrityExt));
1302 if (sbi->s_lvid_bh != bh)
1304 loc.extLength -= sb->s_blocksize;
1307 if (sbi->s_lvid_bh != bh)
1312 * udf_process_sequence
1315 * Process a main/reserve volume descriptor sequence.
1318 * sb Pointer to _locked_ superblock.
1319 * block First block of first extent of the sequence.
1320 * lastblock Lastblock of first extent of the sequence.
1323 * July 1, 1997 - Andrew E. Mileski
1324 * Written, tested, and released.
1326 static noinline int udf_process_sequence(struct super_block *sb, long block,
1327 long lastblock, kernel_lb_addr *fileset)
1329 struct buffer_head *bh = NULL;
1330 struct udf_vds_record vds[VDS_POS_LENGTH];
1331 struct udf_vds_record *curr;
1332 struct generic_desc *gd;
1333 struct volDescPtr *vdp;
1337 long next_s = 0, next_e = 0;
1339 memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH);
1342 * Read the main descriptor sequence and find which descriptors
1345 for (; (!done && block <= lastblock); block++) {
1347 bh = udf_read_tagged(sb, block, block, &ident);
1349 printk(KERN_ERR "udf: Block %Lu of volume descriptor "
1350 "sequence is corrupted or we could not read "
1351 "it.\n", (unsigned long long)block);
1355 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1356 gd = (struct generic_desc *)bh->b_data;
1357 vdsn = le32_to_cpu(gd->volDescSeqNum);
1359 case TAG_IDENT_PVD: /* ISO 13346 3/10.1 */
1360 curr = &vds[VDS_POS_PRIMARY_VOL_DESC];
1361 if (vdsn >= curr->volDescSeqNum) {
1362 curr->volDescSeqNum = vdsn;
1363 curr->block = block;
1366 case TAG_IDENT_VDP: /* ISO 13346 3/10.3 */
1367 curr = &vds[VDS_POS_VOL_DESC_PTR];
1368 if (vdsn >= curr->volDescSeqNum) {
1369 curr->volDescSeqNum = vdsn;
1370 curr->block = block;
1372 vdp = (struct volDescPtr *)bh->b_data;
1373 next_s = le32_to_cpu(
1374 vdp->nextVolDescSeqExt.extLocation);
1375 next_e = le32_to_cpu(
1376 vdp->nextVolDescSeqExt.extLength);
1377 next_e = next_e >> sb->s_blocksize_bits;
1381 case TAG_IDENT_IUVD: /* ISO 13346 3/10.4 */
1382 curr = &vds[VDS_POS_IMP_USE_VOL_DESC];
1383 if (vdsn >= curr->volDescSeqNum) {
1384 curr->volDescSeqNum = vdsn;
1385 curr->block = block;
1388 case TAG_IDENT_PD: /* ISO 13346 3/10.5 */
1389 curr = &vds[VDS_POS_PARTITION_DESC];
1391 curr->block = block;
1393 case TAG_IDENT_LVD: /* ISO 13346 3/10.6 */
1394 curr = &vds[VDS_POS_LOGICAL_VOL_DESC];
1395 if (vdsn >= curr->volDescSeqNum) {
1396 curr->volDescSeqNum = vdsn;
1397 curr->block = block;
1400 case TAG_IDENT_USD: /* ISO 13346 3/10.8 */
1401 curr = &vds[VDS_POS_UNALLOC_SPACE_DESC];
1402 if (vdsn >= curr->volDescSeqNum) {
1403 curr->volDescSeqNum = vdsn;
1404 curr->block = block;
1407 case TAG_IDENT_TD: /* ISO 13346 3/10.9 */
1408 vds[VDS_POS_TERMINATING_DESC].block = block;
1412 next_s = next_e = 0;
1420 * Now read interesting descriptors again and process them
1421 * in a suitable order
1423 if (!vds[VDS_POS_PRIMARY_VOL_DESC].block) {
1424 printk(KERN_ERR "udf: Primary Volume Descriptor not found!\n");
1427 if (udf_load_pvoldesc(sb, vds[VDS_POS_PRIMARY_VOL_DESC].block))
1430 if (vds[VDS_POS_LOGICAL_VOL_DESC].block && udf_load_logicalvol(sb,
1431 vds[VDS_POS_LOGICAL_VOL_DESC].block, fileset))
1434 if (vds[VDS_POS_PARTITION_DESC].block) {
1436 * We rescan the whole descriptor sequence to find
1437 * partition descriptor blocks and process them.
1439 for (block = vds[VDS_POS_PARTITION_DESC].block;
1440 block < vds[VDS_POS_TERMINATING_DESC].block;
1442 if (udf_load_partdesc(sb, block))
1452 static int udf_check_valid(struct super_block *sb, int novrs, int silent)
1455 struct udf_sb_info *sbi = UDF_SB(sb);
1458 udf_debug("Validity check skipped because of novrs option\n");
1461 /* Check that it is NSR02 compliant */
1462 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
1463 block = udf_vrs(sb, silent);
1465 udf_debug("Failed to read byte 32768. Assuming open "
1466 "disc. Skipping validity check\n");
1467 if (block && !sbi->s_last_block)
1468 sbi->s_last_block = udf_get_last_block(sb);
1472 static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
1474 struct anchorVolDescPtr *anchor;
1476 struct buffer_head *bh;
1477 long main_s, main_e, reserve_s, reserve_e;
1479 struct udf_sb_info *sbi;
1485 for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
1486 if (!sbi->s_anchor[i])
1489 bh = udf_read_tagged(sb, sbi->s_anchor[i], sbi->s_anchor[i],
1494 anchor = (struct anchorVolDescPtr *)bh->b_data;
1496 /* Locate the main sequence */
1497 main_s = le32_to_cpu(anchor->mainVolDescSeqExt.extLocation);
1498 main_e = le32_to_cpu(anchor->mainVolDescSeqExt.extLength);
1499 main_e = main_e >> sb->s_blocksize_bits;
1502 /* Locate the reserve sequence */
1503 reserve_s = le32_to_cpu(
1504 anchor->reserveVolDescSeqExt.extLocation);
1505 reserve_e = le32_to_cpu(
1506 anchor->reserveVolDescSeqExt.extLength);
1507 reserve_e = reserve_e >> sb->s_blocksize_bits;
1508 reserve_e += reserve_s;
1512 /* Process the main & reserve sequences */
1513 /* responsible for finding the PartitionDesc(s) */
1514 if (!(udf_process_sequence(sb, main_s, main_e,
1516 udf_process_sequence(sb, reserve_s, reserve_e,
1521 if (i == ARRAY_SIZE(sbi->s_anchor)) {
1522 udf_debug("No Anchor block found\n");
1525 udf_debug("Using anchor in block %d\n", sbi->s_anchor[i]);
1527 for (i = 0; i < sbi->s_partitions; i++) {
1528 kernel_lb_addr uninitialized_var(ino);
1529 struct udf_part_map *map = &sbi->s_partmaps[i];
1531 if (map->s_partition_type != UDF_VIRTUAL_MAP15 &&
1532 map->s_partition_type != UDF_VIRTUAL_MAP20)
1535 if (!sbi->s_last_block) {
1536 sbi->s_last_block = udf_get_last_block(sb);
1537 udf_find_anchor(sb);
1540 if (!sbi->s_last_block) {
1541 udf_debug("Unable to determine Lastblock (For "
1542 "Virtual Partition)\n");
1546 for (j = 0; j < sbi->s_partitions; j++) {
1547 struct udf_part_map *map2 = &sbi->s_partmaps[j];
1549 map->s_volumeseqnum ==
1550 map2->s_volumeseqnum &&
1551 map->s_partition_num ==
1552 map2->s_partition_num) {
1553 ino.partitionReferenceNum = j;
1554 ino.logicalBlockNum =
1556 map2->s_partition_root;
1561 if (j == sbi->s_partitions)
1564 sbi->s_vat_inode = udf_iget(sb, ino);
1565 if (!sbi->s_vat_inode)
1568 if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
1569 map->s_type_specific.s_virtual.s_start_offset =
1570 udf_ext0_offset(sbi->s_vat_inode);
1571 map->s_type_specific.s_virtual.s_num_entries =
1572 (sbi->s_vat_inode->i_size - 36) >> 2;
1573 } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
1575 struct virtualAllocationTable20 *vat20;
1577 pos = udf_block_map(sbi->s_vat_inode, 0);
1578 bh = sb_bread(sb, pos);
1581 vat20 = (struct virtualAllocationTable20 *)
1583 udf_ext0_offset(sbi->s_vat_inode);
1584 map->s_type_specific.s_virtual.s_start_offset =
1585 le16_to_cpu(vat20->lengthHeader) +
1586 udf_ext0_offset(sbi->s_vat_inode);
1587 map->s_type_specific.s_virtual.s_num_entries =
1588 (sbi->s_vat_inode->i_size -
1589 map->s_type_specific.s_virtual.
1590 s_start_offset) >> 2;
1593 map->s_partition_root = udf_get_pblock(sb, 0, i, 0);
1594 map->s_partition_len =
1595 sbi->s_partmaps[ino.partitionReferenceNum].
1601 static void udf_open_lvid(struct super_block *sb)
1603 struct udf_sb_info *sbi = UDF_SB(sb);
1604 struct buffer_head *bh = sbi->s_lvid_bh;
1605 struct logicalVolIntegrityDesc *lvid;
1606 struct logicalVolIntegrityDescImpUse *lvidiu;
1610 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1611 lvidiu = udf_sb_lvidiu(sbi);
1613 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1614 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1615 udf_time_to_disk_stamp(&lvid->recordingDateAndTime,
1617 lvid->integrityType = LVID_INTEGRITY_TYPE_OPEN;
1619 lvid->descTag.descCRC = cpu_to_le16(
1620 udf_crc((char *)lvid + sizeof(tag),
1621 le16_to_cpu(lvid->descTag.descCRCLength), 0));
1623 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
1624 mark_buffer_dirty(bh);
1627 static void udf_close_lvid(struct super_block *sb)
1629 struct udf_sb_info *sbi = UDF_SB(sb);
1630 struct buffer_head *bh = sbi->s_lvid_bh;
1631 struct logicalVolIntegrityDesc *lvid;
1632 struct logicalVolIntegrityDescImpUse *lvidiu;
1637 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1639 if (lvid->integrityType != LVID_INTEGRITY_TYPE_OPEN)
1642 lvidiu = udf_sb_lvidiu(sbi);
1643 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1644 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1645 udf_time_to_disk_stamp(&lvid->recordingDateAndTime, CURRENT_TIME);
1646 if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
1647 lvidiu->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
1648 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
1649 lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
1650 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
1651 lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
1652 lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
1654 lvid->descTag.descCRC = cpu_to_le16(
1655 udf_crc((char *)lvid + sizeof(tag),
1656 le16_to_cpu(lvid->descTag.descCRCLength),
1659 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
1660 mark_buffer_dirty(bh);
1663 static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
1666 int nr_groups = bitmap->s_nr_groups;
1667 int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) *
1670 for (i = 0; i < nr_groups; i++)
1671 if (bitmap->s_block_bitmap[i])
1672 brelse(bitmap->s_block_bitmap[i]);
1674 if (size <= PAGE_SIZE)
1680 static int udf_fill_super(struct super_block *sb, void *options, int silent)
1683 struct inode *inode = NULL;
1684 struct udf_options uopt;
1685 kernel_lb_addr rootdir, fileset;
1686 struct udf_sb_info *sbi;
1688 uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT);
1693 sbi = kzalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
1697 sb->s_fs_info = sbi;
1699 mutex_init(&sbi->s_alloc_mutex);
1701 if (!udf_parse_options((char *)options, &uopt, false))
1704 if (uopt.flags & (1 << UDF_FLAG_UTF8) &&
1705 uopt.flags & (1 << UDF_FLAG_NLS_MAP)) {
1706 udf_error(sb, "udf_read_super",
1707 "utf8 cannot be combined with iocharset\n");
1710 #ifdef CONFIG_UDF_NLS
1711 if ((uopt.flags & (1 << UDF_FLAG_NLS_MAP)) && !uopt.nls_map) {
1712 uopt.nls_map = load_nls_default();
1714 uopt.flags &= ~(1 << UDF_FLAG_NLS_MAP);
1716 udf_debug("Using default NLS map\n");
1719 if (!(uopt.flags & (1 << UDF_FLAG_NLS_MAP)))
1720 uopt.flags |= (1 << UDF_FLAG_UTF8);
1722 fileset.logicalBlockNum = 0xFFFFFFFF;
1723 fileset.partitionReferenceNum = 0xFFFF;
1725 sbi->s_flags = uopt.flags;
1726 sbi->s_uid = uopt.uid;
1727 sbi->s_gid = uopt.gid;
1728 sbi->s_umask = uopt.umask;
1729 sbi->s_nls_map = uopt.nls_map;
1731 /* Set the block size for all transfers */
1732 if (!sb_min_blocksize(sb, uopt.blocksize)) {
1733 udf_debug("Bad block size (%d)\n", uopt.blocksize);
1734 printk(KERN_ERR "udf: bad block size (%d)\n", uopt.blocksize);
1738 if (uopt.session == 0xFFFFFFFF)
1739 sbi->s_session = udf_get_last_session(sb);
1741 sbi->s_session = uopt.session;
1743 udf_debug("Multi-session=%d\n", sbi->s_session);
1745 sbi->s_last_block = uopt.lastblock;
1746 sbi->s_anchor[0] = sbi->s_anchor[1] = 0;
1747 sbi->s_anchor[2] = uopt.anchor;
1748 sbi->s_anchor[3] = 256;
1750 if (udf_check_valid(sb, uopt.novrs, silent)) {
1751 /* read volume recognition sequences */
1752 printk(KERN_WARNING "UDF-fs: No VRS found\n");
1756 udf_find_anchor(sb);
1758 /* Fill in the rest of the superblock */
1759 sb->s_op = &udf_sb_ops;
1762 sb->s_magic = UDF_SUPER_MAGIC;
1763 sb->s_time_gran = 1000;
1765 if (udf_load_partition(sb, &fileset)) {
1766 printk(KERN_WARNING "UDF-fs: No partition found (1)\n");
1770 udf_debug("Lastblock=%d\n", sbi->s_last_block);
1772 if (sbi->s_lvid_bh) {
1773 struct logicalVolIntegrityDescImpUse *lvidiu =
1775 uint16_t minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev);
1776 uint16_t minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev);
1777 /* uint16_t maxUDFWriteRev =
1778 le16_to_cpu(lvidiu->maxUDFWriteRev); */
1780 if (minUDFReadRev > UDF_MAX_READ_VERSION) {
1781 printk(KERN_ERR "UDF-fs: minUDFReadRev=%x "
1783 le16_to_cpu(lvidiu->minUDFReadRev),
1784 UDF_MAX_READ_VERSION);
1786 } else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION)
1787 sb->s_flags |= MS_RDONLY;
1789 sbi->s_udfrev = minUDFWriteRev;
1791 if (minUDFReadRev >= UDF_VERS_USE_EXTENDED_FE)
1792 UDF_SET_FLAG(sb, UDF_FLAG_USE_EXTENDED_FE);
1793 if (minUDFReadRev >= UDF_VERS_USE_STREAMS)
1794 UDF_SET_FLAG(sb, UDF_FLAG_USE_STREAMS);
1797 if (!sbi->s_partitions) {
1798 printk(KERN_WARNING "UDF-fs: No partition found (2)\n");
1802 if (sbi->s_partmaps[sbi->s_partition].s_partition_flags &
1803 UDF_PART_FLAG_READ_ONLY) {
1804 printk(KERN_NOTICE "UDF-fs: Partition marked readonly; "
1805 "forcing readonly mount\n");
1806 sb->s_flags |= MS_RDONLY;
1809 if (udf_find_fileset(sb, &fileset, &rootdir)) {
1810 printk(KERN_WARNING "UDF-fs: No fileset found\n");
1816 udf_time_to_disk_stamp(&ts, sbi->s_record_time);
1817 udf_info("UDF: Mounting volume '%s', "
1818 "timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
1819 sbi->s_volume_ident, le16_to_cpu(ts.year), ts.month, ts.day,
1820 ts.hour, ts.minute, le16_to_cpu(ts.typeAndTimezone));
1822 if (!(sb->s_flags & MS_RDONLY))
1825 /* Assign the root inode */
1826 /* assign inodes by physical block number */
1827 /* perhaps it's not extensible enough, but for now ... */
1828 inode = udf_iget(sb, rootdir);
1830 printk(KERN_ERR "UDF-fs: Error in udf_iget, block=%d, "
1832 rootdir.logicalBlockNum, rootdir.partitionReferenceNum);
1836 /* Allocate a dentry for the root inode */
1837 sb->s_root = d_alloc_root(inode);
1839 printk(KERN_ERR "UDF-fs: Couldn't allocate root dentry\n");
1843 sb->s_maxbytes = MAX_LFS_FILESIZE;
1847 if (sbi->s_vat_inode)
1848 iput(sbi->s_vat_inode);
1849 if (sbi->s_partitions) {
1850 struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition];
1851 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
1852 iput(map->s_uspace.s_table);
1853 if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
1854 iput(map->s_fspace.s_table);
1855 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
1856 udf_sb_free_bitmap(map->s_uspace.s_bitmap);
1857 if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
1858 udf_sb_free_bitmap(map->s_fspace.s_bitmap);
1859 if (map->s_partition_type == UDF_SPARABLE_MAP15)
1860 for (i = 0; i < 4; i++)
1861 brelse(map->s_type_specific.s_sparing.
1864 #ifdef CONFIG_UDF_NLS
1865 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
1866 unload_nls(sbi->s_nls_map);
1868 if (!(sb->s_flags & MS_RDONLY))
1870 brelse(sbi->s_lvid_bh);
1872 kfree(sbi->s_partmaps);
1874 sb->s_fs_info = NULL;
1879 static void udf_error(struct super_block *sb, const char *function,
1880 const char *fmt, ...)
1884 if (!(sb->s_flags & MS_RDONLY)) {
1888 va_start(args, fmt);
1889 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
1891 printk(KERN_CRIT "UDF-fs error (device %s): %s: %s\n",
1892 sb->s_id, function, error_buf);
1895 void udf_warning(struct super_block *sb, const char *function,
1896 const char *fmt, ...)
1900 va_start(args, fmt);
1901 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
1903 printk(KERN_WARNING "UDF-fs warning (device %s): %s: %s\n",
1904 sb->s_id, function, error_buf);
1907 static void udf_put_super(struct super_block *sb)
1910 struct udf_sb_info *sbi;
1913 if (sbi->s_vat_inode)
1914 iput(sbi->s_vat_inode);
1915 if (sbi->s_partitions) {
1916 struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition];
1917 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
1918 iput(map->s_uspace.s_table);
1919 if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
1920 iput(map->s_fspace.s_table);
1921 if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
1922 udf_sb_free_bitmap(map->s_uspace.s_bitmap);
1923 if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
1924 udf_sb_free_bitmap(map->s_fspace.s_bitmap);
1925 if (map->s_partition_type == UDF_SPARABLE_MAP15)
1926 for (i = 0; i < 4; i++)
1927 brelse(map->s_type_specific.s_sparing.
1930 #ifdef CONFIG_UDF_NLS
1931 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
1932 unload_nls(sbi->s_nls_map);
1934 if (!(sb->s_flags & MS_RDONLY))
1936 brelse(sbi->s_lvid_bh);
1937 kfree(sbi->s_partmaps);
1938 kfree(sb->s_fs_info);
1939 sb->s_fs_info = NULL;
1942 static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
1944 struct super_block *sb = dentry->d_sb;
1945 struct udf_sb_info *sbi = UDF_SB(sb);
1946 struct logicalVolIntegrityDescImpUse *lvidiu;
1948 if (sbi->s_lvid_bh != NULL)
1949 lvidiu = udf_sb_lvidiu(sbi);
1953 buf->f_type = UDF_SUPER_MAGIC;
1954 buf->f_bsize = sb->s_blocksize;
1955 buf->f_blocks = sbi->s_partmaps[sbi->s_partition].s_partition_len;
1956 buf->f_bfree = udf_count_free(sb);
1957 buf->f_bavail = buf->f_bfree;
1958 buf->f_files = (lvidiu != NULL ? (le32_to_cpu(lvidiu->numFiles) +
1959 le32_to_cpu(lvidiu->numDirs)) : 0)
1961 buf->f_ffree = buf->f_bfree;
1962 /* __kernel_fsid_t f_fsid */
1963 buf->f_namelen = UDF_NAME_LEN - 2;
1968 static unsigned int udf_count_free_bitmap(struct super_block *sb,
1969 struct udf_bitmap *bitmap)
1971 struct buffer_head *bh = NULL;
1972 unsigned int accum = 0;
1974 int block = 0, newblock;
1979 struct spaceBitmapDesc *bm;
1983 loc.logicalBlockNum = bitmap->s_extPosition;
1984 loc.partitionReferenceNum = UDF_SB(sb)->s_partition;
1985 bh = udf_read_ptagged(sb, loc, 0, &ident);
1988 printk(KERN_ERR "udf: udf_count_free failed\n");
1990 } else if (ident != TAG_IDENT_SBD) {
1992 printk(KERN_ERR "udf: udf_count_free failed\n");
1996 bm = (struct spaceBitmapDesc *)bh->b_data;
1997 bytes = le32_to_cpu(bm->numOfBytes);
1998 index = sizeof(struct spaceBitmapDesc); /* offset in first block only */
1999 ptr = (uint8_t *)bh->b_data;
2002 u32 cur_bytes = min_t(u32, bytes, sb->s_blocksize - index);
2003 accum += bitmap_weight((const unsigned long *)(ptr + index),
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);