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 * E-mail regarding any portion of the Linux UDF file system should be
19 * directed to the development team mailing list (run by majordomo):
20 * linux_udf@hpesjro.fc.hp.com
23 * This file is distributed under the terms of the GNU General Public
24 * License (GPL). Copies of the GPL can be obtained from:
25 * ftp://prep.ai.mit.edu/pub/gnu/GPL
26 * Each contributing author retains all rights to their own work.
28 * (C) 1998 Dave Boynton
29 * (C) 1998-2004 Ben Fennema
30 * (C) 2000 Stelias Computing Inc
34 * 09/24/98 dgb changed to allow compiling outside of kernel, and
35 * added some debugging.
36 * 10/01/98 dgb updated to allow (some) possibility of compiling w/2.0.34
37 * 10/16/98 attempting some multi-session support
38 * 10/17/98 added freespace count for "df"
39 * 11/11/98 gr added novrs option
40 * 11/26/98 dgb added fileset,anchor mount options
41 * 12/06/98 blf really hosed things royally. vat/sparing support. sequenced vol descs
42 * rewrote option handling based on isofs
43 * 12/20/98 find the free space bitmap (if it exists)
48 #include <linux/config.h>
49 #include <linux/blkdev.h>
50 #include <linux/slab.h>
51 #include <linux/kernel.h>
52 #include <linux/module.h>
53 #include <linux/parser.h>
54 #include <linux/stat.h>
55 #include <linux/cdrom.h>
56 #include <linux/nls.h>
57 #include <linux/smp_lock.h>
58 #include <linux/buffer_head.h>
59 #include <linux/vfs.h>
60 #include <linux/vmalloc.h>
61 #include <asm/byteorder.h>
63 #include <linux/udf_fs.h>
67 #include <linux/init.h>
68 #include <asm/uaccess.h>
70 #define VDS_POS_PRIMARY_VOL_DESC 0
71 #define VDS_POS_UNALLOC_SPACE_DESC 1
72 #define VDS_POS_LOGICAL_VOL_DESC 2
73 #define VDS_POS_PARTITION_DESC 3
74 #define VDS_POS_IMP_USE_VOL_DESC 4
75 #define VDS_POS_VOL_DESC_PTR 5
76 #define VDS_POS_TERMINATING_DESC 6
77 #define VDS_POS_LENGTH 7
79 static char error_buf[1024];
81 /* These are the "meat" - everything else is stuffing */
82 static int udf_fill_super(struct super_block *, void *, int);
83 static void udf_put_super(struct super_block *);
84 static void udf_write_super(struct super_block *);
85 static int udf_remount_fs(struct super_block *, int *, char *);
86 static int udf_check_valid(struct super_block *, int, int);
87 static int udf_vrs(struct super_block *sb, int silent);
88 static int udf_load_partition(struct super_block *, lb_addr *);
89 static int udf_load_logicalvol(struct super_block *, struct buffer_head *, lb_addr *);
90 static void udf_load_logicalvolint(struct super_block *, extent_ad);
91 static void udf_find_anchor(struct super_block *);
92 static int udf_find_fileset(struct super_block *, lb_addr *, 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 *, lb_addr *);
95 static void udf_load_partdesc(struct super_block *, struct buffer_head *);
96 static void udf_open_lvid(struct super_block *);
97 static void udf_close_lvid(struct super_block *);
98 static unsigned int udf_count_free(struct super_block *);
99 static int udf_statfs(struct super_block *, struct kstatfs *);
101 /* UDF filesystem type */
102 static struct super_block *udf_get_sb(struct file_system_type *fs_type,
103 int flags, const char *dev_name, void *data)
105 return get_sb_bdev(fs_type, flags, dev_name, data, udf_fill_super);
108 static struct file_system_type udf_fstype = {
109 .owner = THIS_MODULE,
111 .get_sb = udf_get_sb,
112 .kill_sb = kill_block_super,
113 .fs_flags = FS_REQUIRES_DEV,
116 static kmem_cache_t * udf_inode_cachep;
118 static struct inode *udf_alloc_inode(struct super_block *sb)
120 struct udf_inode_info *ei;
121 ei = (struct udf_inode_info *)kmem_cache_alloc(udf_inode_cachep, SLAB_KERNEL);
124 return &ei->vfs_inode;
127 static void udf_destroy_inode(struct inode *inode)
129 kmem_cache_free(udf_inode_cachep, UDF_I(inode));
132 static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
134 struct udf_inode_info *ei = (struct udf_inode_info *) foo;
136 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
137 SLAB_CTOR_CONSTRUCTOR)
139 ei->i_ext.i_data = NULL;
140 inode_init_once(&ei->vfs_inode);
144 static int init_inodecache(void)
146 udf_inode_cachep = kmem_cache_create("udf_inode_cache",
147 sizeof(struct udf_inode_info),
148 0, SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
150 if (udf_inode_cachep == NULL)
155 static void destroy_inodecache(void)
157 if (kmem_cache_destroy(udf_inode_cachep))
158 printk(KERN_INFO "udf_inode_cache: not all structures were freed\n");
161 /* Superblock operations */
162 static struct super_operations udf_sb_ops = {
163 .alloc_inode = udf_alloc_inode,
164 .destroy_inode = udf_destroy_inode,
165 .read_inode = udf_read_inode,
166 .write_inode = udf_write_inode,
167 .put_inode = udf_put_inode,
168 .delete_inode = udf_delete_inode,
169 .clear_inode = udf_clear_inode,
170 .put_super = udf_put_super,
171 .write_super = udf_write_super,
172 .statfs = udf_statfs,
173 .remount_fs = udf_remount_fs,
179 unsigned int blocksize;
180 unsigned int session;
181 unsigned int lastblock;
184 unsigned short partition;
185 unsigned int fileset;
186 unsigned int rootdir;
191 struct nls_table *nls_map;
194 static int __init init_udf_fs(void)
197 printk(KERN_NOTICE "udf: registering filesystem\n");
198 err = init_inodecache();
201 err = register_filesystem(&udf_fstype);
206 destroy_inodecache();
211 static void __exit exit_udf_fs(void)
213 printk(KERN_NOTICE "udf: unregistering filesystem\n");
214 unregister_filesystem(&udf_fstype);
215 destroy_inodecache();
218 module_init(init_udf_fs)
219 module_exit(exit_udf_fs)
225 * Parse mount options.
228 * The following mount options are supported:
230 * gid= Set the default group.
231 * umask= Set the default umask.
232 * uid= Set the default user.
233 * bs= Set the block size.
234 * unhide Show otherwise hidden files.
235 * undelete Show deleted files in lists.
236 * adinicb Embed data in the inode (default)
237 * noadinicb Don't embed data in the inode
238 * shortad Use short ad's
239 * longad Use long ad's (default)
240 * nostrict Unset strict conformance
241 * iocharset= Set the NLS character set
243 * The remaining are for debugging and disaster recovery:
245 * novrs Skip volume sequence recognition
247 * The following expect a offset from 0.
249 * session= Set the CDROM session (default= last session)
250 * anchor= Override standard anchor location. (default= 256)
251 * volume= Override the VolumeDesc location. (unused)
252 * partition= Override the PartitionDesc location. (unused)
253 * lastblock= Set the last block of the filesystem/
255 * The following expect a offset from the partition root.
257 * fileset= Override the fileset block location. (unused)
258 * rootdir= Override the root directory location. (unused)
259 * WARNING: overriding the rootdir to a non-directory may
260 * yield highly unpredictable results.
263 * options Pointer to mount options string.
264 * uopts Pointer to mount options variable.
267 * <return> 1 Mount options parsed okay.
268 * <return> 0 Error parsing mount options.
271 * July 1, 1997 - Andrew E. Mileski
272 * Written, tested, and released.
276 Opt_novrs, Opt_nostrict, Opt_bs, Opt_unhide, Opt_undelete,
277 Opt_noadinicb, Opt_adinicb, Opt_shortad, Opt_longad,
278 Opt_gid, Opt_uid, Opt_umask, Opt_session, Opt_lastblock,
279 Opt_anchor, Opt_volume, Opt_partition, Opt_fileset,
280 Opt_rootdir, Opt_utf8, Opt_iocharset,
284 static match_table_t tokens = {
285 {Opt_novrs, "novrs"},
286 {Opt_nostrict, "nostrict"},
288 {Opt_unhide, "unhide"},
289 {Opt_undelete, "undelete"},
290 {Opt_noadinicb, "noadinicb"},
291 {Opt_adinicb, "adinicb"},
292 {Opt_shortad, "shortad"},
293 {Opt_longad, "longad"},
296 {Opt_umask, "umask=%o"},
297 {Opt_session, "session=%u"},
298 {Opt_lastblock, "lastblock=%u"},
299 {Opt_anchor, "anchor=%u"},
300 {Opt_volume, "volume=%u"},
301 {Opt_partition, "partition=%u"},
302 {Opt_fileset, "fileset=%u"},
303 {Opt_rootdir, "rootdir=%u"},
305 {Opt_iocharset, "iocharset=%s"},
310 udf_parse_options(char *options, struct udf_options *uopt)
316 uopt->blocksize = 2048;
317 uopt->partition = 0xFFFF;
318 uopt->session = 0xFFFFFFFF;
321 uopt->volume = 0xFFFFFFFF;
322 uopt->rootdir = 0xFFFFFFFF;
323 uopt->fileset = 0xFFFFFFFF;
324 uopt->nls_map = NULL;
329 while ((p = strsep(&options, ",")) != NULL)
331 substring_t args[MAX_OPT_ARGS];
336 token = match_token(p, tokens, args);
342 if (match_int(&args[0], &option))
344 uopt->blocksize = option;
347 uopt->flags |= (1 << UDF_FLAG_UNHIDE);
350 uopt->flags |= (1 << UDF_FLAG_UNDELETE);
353 uopt->flags &= ~(1 << UDF_FLAG_USE_AD_IN_ICB);
356 uopt->flags |= (1 << UDF_FLAG_USE_AD_IN_ICB);
359 uopt->flags |= (1 << UDF_FLAG_USE_SHORT_AD);
362 uopt->flags &= ~(1 << UDF_FLAG_USE_SHORT_AD);
365 if (match_int(args, &option))
370 if (match_int(args, &option))
375 if (match_octal(args, &option))
377 uopt->umask = option;
380 uopt->flags &= ~(1 << UDF_FLAG_STRICT);
383 if (match_int(args, &option))
385 uopt->session = option;
388 if (match_int(args, &option))
390 uopt->lastblock = option;
393 if (match_int(args, &option))
395 uopt->anchor = option;
398 if (match_int(args, &option))
400 uopt->volume = option;
403 if (match_int(args, &option))
405 uopt->partition = option;
408 if (match_int(args, &option))
410 uopt->fileset = option;
413 if (match_int(args, &option))
415 uopt->rootdir = option;
418 uopt->flags |= (1 << UDF_FLAG_UTF8);
420 #ifdef CONFIG_UDF_NLS
422 uopt->nls_map = load_nls(args[0].from);
423 uopt->flags |= (1 << UDF_FLAG_NLS_MAP);
427 printk(KERN_ERR "udf: bad mount option \"%s\" "
428 "or missing value\n", p);
436 udf_write_super(struct super_block *sb)
439 if (!(sb->s_flags & MS_RDONLY))
446 udf_remount_fs(struct super_block *sb, int *flags, char *options)
448 struct udf_options uopt;
450 uopt.flags = UDF_SB(sb)->s_flags ;
451 uopt.uid = UDF_SB(sb)->s_uid ;
452 uopt.gid = UDF_SB(sb)->s_gid ;
453 uopt.umask = UDF_SB(sb)->s_umask ;
455 if ( !udf_parse_options(options, &uopt) )
458 UDF_SB(sb)->s_flags = uopt.flags;
459 UDF_SB(sb)->s_uid = uopt.uid;
460 UDF_SB(sb)->s_gid = uopt.gid;
461 UDF_SB(sb)->s_umask = uopt.umask;
463 if (UDF_SB_LVIDBH(sb)) {
464 int write_rev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev);
465 if (write_rev > UDF_MAX_WRITE_VERSION)
469 if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
471 if (*flags & MS_RDONLY)
483 * Set the block size to be used in all transfers.
486 * To allow room for a DMA transfer, it is best to guess big when unsure.
487 * This routine picks 2048 bytes as the blocksize when guessing. This
488 * should be adequate until devices with larger block sizes become common.
490 * Note that the Linux kernel can currently only deal with blocksizes of
491 * 512, 1024, 2048, 4096, and 8192 bytes.
494 * sb Pointer to _locked_ superblock.
497 * sb->s_blocksize Blocksize.
498 * sb->s_blocksize_bits log2 of blocksize.
499 * <return> 0 Blocksize is valid.
500 * <return> 1 Blocksize is invalid.
503 * July 1, 1997 - Andrew E. Mileski
504 * Written, tested, and released.
507 udf_set_blocksize(struct super_block *sb, int bsize)
509 if (!sb_min_blocksize(sb, bsize)) {
510 udf_debug("Bad block size (%d)\n", bsize);
511 printk(KERN_ERR "udf: bad block size (%d)\n", bsize);
514 return sb->s_blocksize;
518 udf_vrs(struct super_block *sb, int silent)
520 struct volStructDesc *vsd = NULL;
523 struct buffer_head *bh = NULL;
528 /* Block size must be a multiple of 512 */
529 if (sb->s_blocksize & 511)
532 if (sb->s_blocksize < sizeof(struct volStructDesc))
533 sectorsize = sizeof(struct volStructDesc);
535 sectorsize = sb->s_blocksize;
537 sector += (UDF_SB_SESSION(sb) << sb->s_blocksize_bits);
539 udf_debug("Starting at sector %u (%ld byte sectors)\n",
540 (sector >> sb->s_blocksize_bits), sb->s_blocksize);
541 /* Process the sequence (if applicable) */
542 for (;!nsr02 && !nsr03; sector += sectorsize)
545 bh = udf_tread(sb, sector >> sb->s_blocksize_bits);
549 /* Look for ISO descriptors */
550 vsd = (struct volStructDesc *)(bh->b_data +
551 (sector & (sb->s_blocksize - 1)));
553 if (vsd->stdIdent[0] == 0)
555 udf_release_data(bh);
558 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001, VSD_STD_ID_LEN))
561 switch (vsd->structType)
564 udf_debug("ISO9660 Boot Record found\n");
567 udf_debug("ISO9660 Primary Volume Descriptor found\n");
570 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
573 udf_debug("ISO9660 Volume Partition Descriptor found\n");
576 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
579 udf_debug("ISO9660 VRS (%u) found\n", vsd->structType);
583 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BEA01, VSD_STD_ID_LEN))
586 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_TEA01, VSD_STD_ID_LEN))
588 udf_release_data(bh);
591 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR02, VSD_STD_ID_LEN))
595 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR03, VSD_STD_ID_LEN))
599 udf_release_data(bh);
606 else if (sector - (UDF_SB_SESSION(sb) << sb->s_blocksize_bits) == 32768)
616 * Find an anchor volume descriptor.
619 * sb Pointer to _locked_ superblock.
620 * lastblock Last block on media.
623 * <return> 1 if not found, 0 if ok
626 * July 1, 1997 - Andrew E. Mileski
627 * Written, tested, and released.
630 udf_find_anchor(struct super_block *sb)
632 int lastblock = UDF_SB_LASTBLOCK(sb);
633 struct buffer_head *bh = NULL;
640 int varlastblock = udf_variable_to_fixed(lastblock);
641 int last[] = { lastblock, lastblock - 2,
642 lastblock - 150, lastblock - 152,
643 varlastblock, varlastblock - 2,
644 varlastblock - 150, varlastblock - 152 };
648 /* Search for an anchor volume descriptor pointer */
650 /* according to spec, anchor is in either:
654 * however, if the disc isn't closed, it could be 512 */
656 for (i=0; (!lastblock && i<sizeof(last)/sizeof(int)); i++)
658 if (last[i] < 0 || !(bh = sb_bread(sb, last[i])))
660 ident = location = 0;
664 ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
665 location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
666 udf_release_data(bh);
669 if (ident == TAG_IDENT_AVDP)
671 if (location == last[i] - UDF_SB_SESSION(sb))
673 lastblock = UDF_SB_ANCHOR(sb)[0] = last[i] - UDF_SB_SESSION(sb);
674 UDF_SB_ANCHOR(sb)[1] = last[i] - 256 - UDF_SB_SESSION(sb);
676 else if (location == udf_variable_to_fixed(last[i]) - UDF_SB_SESSION(sb))
678 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
679 lastblock = UDF_SB_ANCHOR(sb)[0] = udf_variable_to_fixed(last[i]) - UDF_SB_SESSION(sb);
680 UDF_SB_ANCHOR(sb)[1] = lastblock - 256 - UDF_SB_SESSION(sb);
683 udf_debug("Anchor found at block %d, location mismatch %d.\n",
686 else if (ident == TAG_IDENT_FE || ident == TAG_IDENT_EFE)
689 UDF_SB_ANCHOR(sb)[3] = 512;
693 if (last[i] < 256 || !(bh = sb_bread(sb, last[i] - 256)))
695 ident = location = 0;
699 ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
700 location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
701 udf_release_data(bh);
704 if (ident == TAG_IDENT_AVDP &&
705 location == last[i] - 256 - UDF_SB_SESSION(sb))
708 UDF_SB_ANCHOR(sb)[1] = last[i] - 256;
712 if (last[i] < 312 + UDF_SB_SESSION(sb) || !(bh = sb_bread(sb, last[i] - 312 - UDF_SB_SESSION(sb))))
714 ident = location = 0;
718 ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
719 location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
720 udf_release_data(bh);
723 if (ident == TAG_IDENT_AVDP &&
724 location == udf_variable_to_fixed(last[i]) - 256)
726 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
727 lastblock = udf_variable_to_fixed(last[i]);
728 UDF_SB_ANCHOR(sb)[1] = lastblock - 256;
737 /* We havn't found the lastblock. check 312 */
738 if ((bh = sb_bread(sb, 312 + UDF_SB_SESSION(sb))))
740 ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
741 location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
742 udf_release_data(bh);
744 if (ident == TAG_IDENT_AVDP && location == 256)
745 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
749 for (i=0; i<sizeof(UDF_SB_ANCHOR(sb))/sizeof(int); i++)
751 if (UDF_SB_ANCHOR(sb)[i])
753 if (!(bh = udf_read_tagged(sb,
754 UDF_SB_ANCHOR(sb)[i], UDF_SB_ANCHOR(sb)[i], &ident)))
756 UDF_SB_ANCHOR(sb)[i] = 0;
760 udf_release_data(bh);
761 if ((ident != TAG_IDENT_AVDP) && (i ||
762 (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE)))
764 UDF_SB_ANCHOR(sb)[i] = 0;
770 UDF_SB_LASTBLOCK(sb) = lastblock;
774 udf_find_fileset(struct super_block *sb, lb_addr *fileset, lb_addr *root)
776 struct buffer_head *bh = NULL;
780 if (fileset->logicalBlockNum != 0xFFFFFFFF ||
781 fileset->partitionReferenceNum != 0xFFFF)
783 bh = udf_read_ptagged(sb, *fileset, 0, &ident);
787 else if (ident != TAG_IDENT_FSD)
789 udf_release_data(bh);
795 if (!bh) /* Search backwards through the partitions */
801 for (newfileset.partitionReferenceNum=UDF_SB_NUMPARTS(sb)-1;
802 (newfileset.partitionReferenceNum != 0xFFFF &&
803 fileset->logicalBlockNum == 0xFFFFFFFF &&
804 fileset->partitionReferenceNum == 0xFFFF);
805 newfileset.partitionReferenceNum--)
807 lastblock = UDF_SB_PARTLEN(sb, newfileset.partitionReferenceNum);
808 newfileset.logicalBlockNum = 0;
812 bh = udf_read_ptagged(sb, newfileset, 0, &ident);
815 newfileset.logicalBlockNum ++;
823 struct spaceBitmapDesc *sp;
824 sp = (struct spaceBitmapDesc *)bh->b_data;
825 newfileset.logicalBlockNum += 1 +
826 ((le32_to_cpu(sp->numOfBytes) + sizeof(struct spaceBitmapDesc) - 1)
827 >> sb->s_blocksize_bits);
828 udf_release_data(bh);
833 *fileset = newfileset;
838 newfileset.logicalBlockNum ++;
839 udf_release_data(bh);
845 while (newfileset.logicalBlockNum < lastblock &&
846 fileset->logicalBlockNum == 0xFFFFFFFF &&
847 fileset->partitionReferenceNum == 0xFFFF);
851 if ((fileset->logicalBlockNum != 0xFFFFFFFF ||
852 fileset->partitionReferenceNum != 0xFFFF) && bh)
854 udf_debug("Fileset at block=%d, partition=%d\n",
855 fileset->logicalBlockNum, fileset->partitionReferenceNum);
857 UDF_SB_PARTITION(sb) = fileset->partitionReferenceNum;
858 udf_load_fileset(sb, bh, root);
859 udf_release_data(bh);
866 udf_load_pvoldesc(struct super_block *sb, struct buffer_head *bh)
868 struct primaryVolDesc *pvoldesc;
874 pvoldesc = (struct primaryVolDesc *)bh->b_data;
876 if ( udf_stamp_to_time(&recording, &recording_usec,
877 lets_to_cpu(pvoldesc->recordingDateAndTime)) )
880 ts = lets_to_cpu(pvoldesc->recordingDateAndTime);
881 udf_debug("recording time %ld/%ld, %04u/%02u/%02u %02u:%02u (%x)\n",
882 recording, recording_usec,
883 ts.year, ts.month, ts.day, ts.hour, ts.minute, ts.typeAndTimezone);
884 UDF_SB_RECORDTIME(sb).tv_sec = recording;
885 UDF_SB_RECORDTIME(sb).tv_nsec = recording_usec * 1000;
888 if ( !udf_build_ustr(&instr, pvoldesc->volIdent, 32) )
890 if (udf_CS0toUTF8(&outstr, &instr))
892 strncpy( UDF_SB_VOLIDENT(sb), outstr.u_name,
893 outstr.u_len > 31 ? 31 : outstr.u_len);
894 udf_debug("volIdent[] = '%s'\n", UDF_SB_VOLIDENT(sb));
898 if ( !udf_build_ustr(&instr, pvoldesc->volSetIdent, 128) )
900 if (udf_CS0toUTF8(&outstr, &instr))
901 udf_debug("volSetIdent[] = '%s'\n", outstr.u_name);
906 udf_load_fileset(struct super_block *sb, struct buffer_head *bh, lb_addr *root)
908 struct fileSetDesc *fset;
910 fset = (struct fileSetDesc *)bh->b_data;
912 *root = lelb_to_cpu(fset->rootDirectoryICB.extLocation);
914 UDF_SB_SERIALNUM(sb) = le16_to_cpu(fset->descTag.tagSerialNum);
916 udf_debug("Rootdir at block=%d, partition=%d\n",
917 root->logicalBlockNum, root->partitionReferenceNum);
921 udf_load_partdesc(struct super_block *sb, struct buffer_head *bh)
923 struct partitionDesc *p;
926 p = (struct partitionDesc *)bh->b_data;
928 for (i=0; i<UDF_SB_NUMPARTS(sb); i++)
930 udf_debug("Searching map: (%d == %d)\n",
931 UDF_SB_PARTMAPS(sb)[i].s_partition_num, le16_to_cpu(p->partitionNumber));
932 if (UDF_SB_PARTMAPS(sb)[i].s_partition_num == le16_to_cpu(p->partitionNumber))
934 UDF_SB_PARTLEN(sb,i) = le32_to_cpu(p->partitionLength); /* blocks */
935 UDF_SB_PARTROOT(sb,i) = le32_to_cpu(p->partitionStartingLocation);
936 if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_READ_ONLY)
937 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_READ_ONLY;
938 if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_WRITE_ONCE)
939 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_WRITE_ONCE;
940 if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_REWRITABLE)
941 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_REWRITABLE;
942 if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_OVERWRITABLE)
943 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_OVERWRITABLE;
945 if (!strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR02) ||
946 !strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR03))
948 struct partitionHeaderDesc *phd;
950 phd = (struct partitionHeaderDesc *)(p->partitionContentsUse);
951 if (phd->unallocSpaceTable.extLength)
953 lb_addr loc = { le32_to_cpu(phd->unallocSpaceTable.extPosition), i };
955 UDF_SB_PARTMAPS(sb)[i].s_uspace.s_table =
957 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_UNALLOC_TABLE;
958 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
959 i, UDF_SB_PARTMAPS(sb)[i].s_uspace.s_table->i_ino);
961 if (phd->unallocSpaceBitmap.extLength)
963 UDF_SB_ALLOC_BITMAP(sb, i, s_uspace);
964 if (UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap != NULL)
966 UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap->s_extLength =
967 le32_to_cpu(phd->unallocSpaceBitmap.extLength);
968 UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap->s_extPosition =
969 le32_to_cpu(phd->unallocSpaceBitmap.extPosition);
970 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_UNALLOC_BITMAP;
971 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
972 i, UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap->s_extPosition);
975 if (phd->partitionIntegrityTable.extLength)
976 udf_debug("partitionIntegrityTable (part %d)\n", i);
977 if (phd->freedSpaceTable.extLength)
979 lb_addr loc = { le32_to_cpu(phd->freedSpaceTable.extPosition), i };
981 UDF_SB_PARTMAPS(sb)[i].s_fspace.s_table =
983 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_FREED_TABLE;
984 udf_debug("freedSpaceTable (part %d) @ %ld\n",
985 i, UDF_SB_PARTMAPS(sb)[i].s_fspace.s_table->i_ino);
987 if (phd->freedSpaceBitmap.extLength)
989 UDF_SB_ALLOC_BITMAP(sb, i, s_fspace);
990 if (UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap != NULL)
992 UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap->s_extLength =
993 le32_to_cpu(phd->freedSpaceBitmap.extLength);
994 UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap->s_extPosition =
995 le32_to_cpu(phd->freedSpaceBitmap.extPosition);
996 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_FREED_BITMAP;
997 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
998 i, UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap->s_extPosition);
1005 if (i == UDF_SB_NUMPARTS(sb))
1007 udf_debug("Partition (%d) not found in partition map\n", le16_to_cpu(p->partitionNumber));
1011 udf_debug("Partition (%d:%d type %x) starts at physical %d, block length %d\n",
1012 le16_to_cpu(p->partitionNumber), i, UDF_SB_PARTTYPE(sb,i),
1013 UDF_SB_PARTROOT(sb,i), UDF_SB_PARTLEN(sb,i));
1018 udf_load_logicalvol(struct super_block *sb, struct buffer_head * bh, lb_addr *fileset)
1020 struct logicalVolDesc *lvd;
1024 lvd = (struct logicalVolDesc *)bh->b_data;
1026 UDF_SB_ALLOC_PARTMAPS(sb, le32_to_cpu(lvd->numPartitionMaps));
1029 i<UDF_SB_NUMPARTS(sb) && offset<le32_to_cpu(lvd->mapTableLength);
1030 i++,offset+=((struct genericPartitionMap *)&(lvd->partitionMaps[offset]))->partitionMapLength)
1032 type = ((struct genericPartitionMap *)&(lvd->partitionMaps[offset]))->partitionMapType;
1035 struct genericPartitionMap1 *gpm1 = (struct genericPartitionMap1 *)&(lvd->partitionMaps[offset]);
1036 UDF_SB_PARTTYPE(sb,i) = UDF_TYPE1_MAP15;
1037 UDF_SB_PARTVSN(sb,i) = le16_to_cpu(gpm1->volSeqNum);
1038 UDF_SB_PARTNUM(sb,i) = le16_to_cpu(gpm1->partitionNum);
1039 UDF_SB_PARTFUNC(sb,i) = NULL;
1043 struct udfPartitionMap2 *upm2 = (struct udfPartitionMap2 *)&(lvd->partitionMaps[offset]);
1044 if (!strncmp(upm2->partIdent.ident, UDF_ID_VIRTUAL, strlen(UDF_ID_VIRTUAL)))
1046 if (le16_to_cpu(((uint16_t *)upm2->partIdent.identSuffix)[0]) == 0x0150)
1048 UDF_SB_PARTTYPE(sb,i) = UDF_VIRTUAL_MAP15;
1049 UDF_SB_PARTFUNC(sb,i) = udf_get_pblock_virt15;
1051 else if (le16_to_cpu(((uint16_t *)upm2->partIdent.identSuffix)[0]) == 0x0200)
1053 UDF_SB_PARTTYPE(sb,i) = UDF_VIRTUAL_MAP20;
1054 UDF_SB_PARTFUNC(sb,i) = udf_get_pblock_virt20;
1057 else if (!strncmp(upm2->partIdent.ident, UDF_ID_SPARABLE, strlen(UDF_ID_SPARABLE)))
1061 struct sparingTable *st;
1062 struct sparablePartitionMap *spm = (struct sparablePartitionMap *)&(lvd->partitionMaps[offset]);
1064 UDF_SB_PARTTYPE(sb,i) = UDF_SPARABLE_MAP15;
1065 UDF_SB_TYPESPAR(sb,i).s_packet_len = le16_to_cpu(spm->packetLength);
1066 for (j=0; j<spm->numSparingTables; j++)
1068 loc = le32_to_cpu(spm->locSparingTable[j]);
1069 UDF_SB_TYPESPAR(sb,i).s_spar_map[j] =
1070 udf_read_tagged(sb, loc, loc, &ident);
1071 if (UDF_SB_TYPESPAR(sb,i).s_spar_map[j] != NULL)
1073 st = (struct sparingTable *)UDF_SB_TYPESPAR(sb,i).s_spar_map[j]->b_data;
1075 strncmp(st->sparingIdent.ident, UDF_ID_SPARING, strlen(UDF_ID_SPARING)))
1077 udf_release_data(UDF_SB_TYPESPAR(sb,i).s_spar_map[j]);
1078 UDF_SB_TYPESPAR(sb,i).s_spar_map[j] = NULL;
1082 UDF_SB_PARTFUNC(sb,i) = udf_get_pblock_spar15;
1086 udf_debug("Unknown ident: %s\n", upm2->partIdent.ident);
1089 UDF_SB_PARTVSN(sb,i) = le16_to_cpu(upm2->volSeqNum);
1090 UDF_SB_PARTNUM(sb,i) = le16_to_cpu(upm2->partitionNum);
1092 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1093 i, UDF_SB_PARTNUM(sb,i), type, UDF_SB_PARTVSN(sb,i));
1098 long_ad *la = (long_ad *)&(lvd->logicalVolContentsUse[0]);
1100 *fileset = lelb_to_cpu(la->extLocation);
1101 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1102 fileset->logicalBlockNum,
1103 fileset->partitionReferenceNum);
1105 if (lvd->integritySeqExt.extLength)
1106 udf_load_logicalvolint(sb, leea_to_cpu(lvd->integritySeqExt));
1111 * udf_load_logicalvolint
1115 udf_load_logicalvolint(struct super_block *sb, extent_ad loc)
1117 struct buffer_head *bh = NULL;
1120 while (loc.extLength > 0 &&
1121 (bh = udf_read_tagged(sb, loc.extLocation,
1122 loc.extLocation, &ident)) &&
1123 ident == TAG_IDENT_LVID)
1125 UDF_SB_LVIDBH(sb) = bh;
1127 if (UDF_SB_LVID(sb)->nextIntegrityExt.extLength)
1128 udf_load_logicalvolint(sb, leea_to_cpu(UDF_SB_LVID(sb)->nextIntegrityExt));
1130 if (UDF_SB_LVIDBH(sb) != bh)
1131 udf_release_data(bh);
1132 loc.extLength -= sb->s_blocksize;
1135 if (UDF_SB_LVIDBH(sb) != bh)
1136 udf_release_data(bh);
1140 * udf_process_sequence
1143 * Process a main/reserve volume descriptor sequence.
1146 * sb Pointer to _locked_ superblock.
1147 * block First block of first extent of the sequence.
1148 * lastblock Lastblock of first extent of the sequence.
1151 * July 1, 1997 - Andrew E. Mileski
1152 * Written, tested, and released.
1155 udf_process_sequence(struct super_block *sb, long block, long lastblock, lb_addr *fileset)
1157 struct buffer_head *bh = NULL;
1158 struct udf_vds_record vds[VDS_POS_LENGTH];
1159 struct generic_desc *gd;
1160 struct volDescPtr *vdp;
1165 long next_s = 0, next_e = 0;
1167 memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH);
1169 /* Read the main descriptor sequence */
1170 for (;(!done && block <= lastblock); block++)
1173 bh = udf_read_tagged(sb, block, block, &ident);
1177 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1178 gd = (struct generic_desc *)bh->b_data;
1179 vdsn = le32_to_cpu(gd->volDescSeqNum);
1182 case TAG_IDENT_PVD: /* ISO 13346 3/10.1 */
1183 if (vdsn >= vds[VDS_POS_PRIMARY_VOL_DESC].volDescSeqNum)
1185 vds[VDS_POS_PRIMARY_VOL_DESC].volDescSeqNum = vdsn;
1186 vds[VDS_POS_PRIMARY_VOL_DESC].block = block;
1189 case TAG_IDENT_VDP: /* ISO 13346 3/10.3 */
1190 if (vdsn >= vds[VDS_POS_VOL_DESC_PTR].volDescSeqNum)
1192 vds[VDS_POS_VOL_DESC_PTR].volDescSeqNum = vdsn;
1193 vds[VDS_POS_VOL_DESC_PTR].block = block;
1195 vdp = (struct volDescPtr *)bh->b_data;
1196 next_s = le32_to_cpu(vdp->nextVolDescSeqExt.extLocation);
1197 next_e = le32_to_cpu(vdp->nextVolDescSeqExt.extLength);
1198 next_e = next_e >> sb->s_blocksize_bits;
1202 case TAG_IDENT_IUVD: /* ISO 13346 3/10.4 */
1203 if (vdsn >= vds[VDS_POS_IMP_USE_VOL_DESC].volDescSeqNum)
1205 vds[VDS_POS_IMP_USE_VOL_DESC].volDescSeqNum = vdsn;
1206 vds[VDS_POS_IMP_USE_VOL_DESC].block = block;
1209 case TAG_IDENT_PD: /* ISO 13346 3/10.5 */
1210 if (!vds[VDS_POS_PARTITION_DESC].block)
1211 vds[VDS_POS_PARTITION_DESC].block = block;
1213 case TAG_IDENT_LVD: /* ISO 13346 3/10.6 */
1214 if (vdsn >= vds[VDS_POS_LOGICAL_VOL_DESC].volDescSeqNum)
1216 vds[VDS_POS_LOGICAL_VOL_DESC].volDescSeqNum = vdsn;
1217 vds[VDS_POS_LOGICAL_VOL_DESC].block = block;
1220 case TAG_IDENT_USD: /* ISO 13346 3/10.8 */
1221 if (vdsn >= vds[VDS_POS_UNALLOC_SPACE_DESC].volDescSeqNum)
1223 vds[VDS_POS_UNALLOC_SPACE_DESC].volDescSeqNum = vdsn;
1224 vds[VDS_POS_UNALLOC_SPACE_DESC].block = block;
1227 case TAG_IDENT_TD: /* ISO 13346 3/10.9 */
1228 vds[VDS_POS_TERMINATING_DESC].block = block;
1233 next_s = next_e = 0;
1239 udf_release_data(bh);
1241 for (i=0; i<VDS_POS_LENGTH; i++)
1245 bh = udf_read_tagged(sb, vds[i].block, vds[i].block, &ident);
1247 if (i == VDS_POS_PRIMARY_VOL_DESC)
1248 udf_load_pvoldesc(sb, bh);
1249 else if (i == VDS_POS_LOGICAL_VOL_DESC)
1250 udf_load_logicalvol(sb, bh, fileset);
1251 else if (i == VDS_POS_PARTITION_DESC)
1253 struct buffer_head *bh2 = NULL;
1254 udf_load_partdesc(sb, bh);
1255 for (j=vds[i].block+1; j<vds[VDS_POS_TERMINATING_DESC].block; j++)
1257 bh2 = udf_read_tagged(sb, j, j, &ident);
1258 gd = (struct generic_desc *)bh2->b_data;
1259 if (ident == TAG_IDENT_PD)
1260 udf_load_partdesc(sb, bh2);
1261 udf_release_data(bh2);
1264 udf_release_data(bh);
1275 udf_check_valid(struct super_block *sb, int novrs, int silent)
1281 udf_debug("Validity check skipped because of novrs option\n");
1284 /* Check that it is NSR02 compliant */
1285 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
1286 else if ((block = udf_vrs(sb, silent)) == -1)
1288 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1289 if (!UDF_SB_LASTBLOCK(sb))
1290 UDF_SB_LASTBLOCK(sb) = udf_get_last_block(sb);
1298 udf_load_partition(struct super_block *sb, lb_addr *fileset)
1300 struct anchorVolDescPtr *anchor;
1302 struct buffer_head *bh;
1303 long main_s, main_e, reserve_s, reserve_e;
1309 for (i=0; i<sizeof(UDF_SB_ANCHOR(sb))/sizeof(int); i++)
1311 if (UDF_SB_ANCHOR(sb)[i] && (bh = udf_read_tagged(sb,
1312 UDF_SB_ANCHOR(sb)[i], UDF_SB_ANCHOR(sb)[i], &ident)))
1314 anchor = (struct anchorVolDescPtr *)bh->b_data;
1316 /* Locate the main sequence */
1317 main_s = le32_to_cpu( anchor->mainVolDescSeqExt.extLocation );
1318 main_e = le32_to_cpu( anchor->mainVolDescSeqExt.extLength );
1319 main_e = main_e >> sb->s_blocksize_bits;
1322 /* Locate the reserve sequence */
1323 reserve_s = le32_to_cpu(anchor->reserveVolDescSeqExt.extLocation);
1324 reserve_e = le32_to_cpu(anchor->reserveVolDescSeqExt.extLength);
1325 reserve_e = reserve_e >> sb->s_blocksize_bits;
1326 reserve_e += reserve_s;
1328 udf_release_data(bh);
1330 /* Process the main & reserve sequences */
1331 /* responsible for finding the PartitionDesc(s) */
1332 if (!(udf_process_sequence(sb, main_s, main_e, fileset) &&
1333 udf_process_sequence(sb, reserve_s, reserve_e, fileset)))
1340 if (i == sizeof(UDF_SB_ANCHOR(sb))/sizeof(int))
1342 udf_debug("No Anchor block found\n");
1346 udf_debug("Using anchor in block %d\n", UDF_SB_ANCHOR(sb)[i]);
1348 for (i=0; i<UDF_SB_NUMPARTS(sb); i++)
1350 switch UDF_SB_PARTTYPE(sb, i)
1352 case UDF_VIRTUAL_MAP15:
1353 case UDF_VIRTUAL_MAP20:
1357 if (!UDF_SB_LASTBLOCK(sb))
1359 UDF_SB_LASTBLOCK(sb) = udf_get_last_block(sb);
1360 udf_find_anchor(sb);
1363 if (!UDF_SB_LASTBLOCK(sb))
1365 udf_debug("Unable to determine Lastblock (For Virtual Partition)\n");
1369 for (j=0; j<UDF_SB_NUMPARTS(sb); j++)
1372 UDF_SB_PARTVSN(sb,i) == UDF_SB_PARTVSN(sb,j) &&
1373 UDF_SB_PARTNUM(sb,i) == UDF_SB_PARTNUM(sb,j))
1375 ino.partitionReferenceNum = j;
1376 ino.logicalBlockNum = UDF_SB_LASTBLOCK(sb) -
1377 UDF_SB_PARTROOT(sb,j);
1382 if (j == UDF_SB_NUMPARTS(sb))
1385 if (!(UDF_SB_VAT(sb) = udf_iget(sb, ino)))
1388 if (UDF_SB_PARTTYPE(sb,i) == UDF_VIRTUAL_MAP15)
1390 UDF_SB_TYPEVIRT(sb,i).s_start_offset = udf_ext0_offset(UDF_SB_VAT(sb));
1391 UDF_SB_TYPEVIRT(sb,i).s_num_entries = (UDF_SB_VAT(sb)->i_size - 36) >> 2;
1393 else if (UDF_SB_PARTTYPE(sb,i) == UDF_VIRTUAL_MAP20)
1395 struct buffer_head *bh = NULL;
1398 pos = udf_block_map(UDF_SB_VAT(sb), 0);
1399 bh = sb_bread(sb, pos);
1400 UDF_SB_TYPEVIRT(sb,i).s_start_offset =
1401 le16_to_cpu(((struct virtualAllocationTable20 *)bh->b_data + udf_ext0_offset(UDF_SB_VAT(sb)))->lengthHeader) +
1402 udf_ext0_offset(UDF_SB_VAT(sb));
1403 UDF_SB_TYPEVIRT(sb,i).s_num_entries = (UDF_SB_VAT(sb)->i_size -
1404 UDF_SB_TYPEVIRT(sb,i).s_start_offset) >> 2;
1405 udf_release_data(bh);
1407 UDF_SB_PARTROOT(sb,i) = udf_get_pblock(sb, 0, i, 0);
1408 UDF_SB_PARTLEN(sb,i) = UDF_SB_PARTLEN(sb,ino.partitionReferenceNum);
1415 static void udf_open_lvid(struct super_block *sb)
1417 if (UDF_SB_LVIDBH(sb))
1422 UDF_SB_LVIDIU(sb)->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1423 UDF_SB_LVIDIU(sb)->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1424 if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
1425 UDF_SB_LVID(sb)->recordingDateAndTime = cpu_to_lets(cpu_time);
1426 UDF_SB_LVID(sb)->integrityType = LVID_INTEGRITY_TYPE_OPEN;
1428 UDF_SB_LVID(sb)->descTag.descCRC =
1429 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb) + sizeof(tag),
1430 le16_to_cpu(UDF_SB_LVID(sb)->descTag.descCRCLength), 0));
1432 UDF_SB_LVID(sb)->descTag.tagChecksum = 0;
1433 for (i=0; i<16; i++)
1435 UDF_SB_LVID(sb)->descTag.tagChecksum +=
1436 ((uint8_t *)&(UDF_SB_LVID(sb)->descTag))[i];
1438 mark_buffer_dirty(UDF_SB_LVIDBH(sb));
1442 static void udf_close_lvid(struct super_block *sb)
1444 if (UDF_SB_LVIDBH(sb) &&
1445 UDF_SB_LVID(sb)->integrityType == LVID_INTEGRITY_TYPE_OPEN)
1450 UDF_SB_LVIDIU(sb)->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1451 UDF_SB_LVIDIU(sb)->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1452 if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
1453 UDF_SB_LVID(sb)->recordingDateAndTime = cpu_to_lets(cpu_time);
1454 if (UDF_MAX_WRITE_VERSION > le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev))
1455 UDF_SB_LVIDIU(sb)->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
1456 if (UDF_SB_UDFREV(sb) > le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFReadRev))
1457 UDF_SB_LVIDIU(sb)->minUDFReadRev = cpu_to_le16(UDF_SB_UDFREV(sb));
1458 if (UDF_SB_UDFREV(sb) > le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev))
1459 UDF_SB_LVIDIU(sb)->minUDFWriteRev = cpu_to_le16(UDF_SB_UDFREV(sb));
1460 UDF_SB_LVID(sb)->integrityType = LVID_INTEGRITY_TYPE_CLOSE;
1462 UDF_SB_LVID(sb)->descTag.descCRC =
1463 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb) + sizeof(tag),
1464 le16_to_cpu(UDF_SB_LVID(sb)->descTag.descCRCLength), 0));
1466 UDF_SB_LVID(sb)->descTag.tagChecksum = 0;
1467 for (i=0; i<16; i++)
1469 UDF_SB_LVID(sb)->descTag.tagChecksum +=
1470 ((uint8_t *)&(UDF_SB_LVID(sb)->descTag))[i];
1472 mark_buffer_dirty(UDF_SB_LVIDBH(sb));
1480 * Complete the specified super block.
1483 * sb Pointer to superblock to complete - never NULL.
1484 * sb->s_dev Device to read suberblock from.
1485 * options Pointer to mount options.
1486 * silent Silent flag.
1489 * July 1, 1997 - Andrew E. Mileski
1490 * Written, tested, and released.
1492 static int udf_fill_super(struct super_block *sb, void *options, int silent)
1495 struct inode *inode=NULL;
1496 struct udf_options uopt;
1497 lb_addr rootdir, fileset;
1498 struct udf_sb_info *sbi;
1500 uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT);
1505 sbi = kmalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
1508 sb->s_fs_info = sbi;
1509 memset(UDF_SB(sb), 0x00, sizeof(struct udf_sb_info));
1511 if (!udf_parse_options((char *)options, &uopt))
1514 if (uopt.flags & (1 << UDF_FLAG_UTF8) &&
1515 uopt.flags & (1 << UDF_FLAG_NLS_MAP))
1517 udf_error(sb, "udf_read_super",
1518 "utf8 cannot be combined with iocharset\n");
1521 #ifdef CONFIG_UDF_NLS
1522 if ((uopt.flags & (1 << UDF_FLAG_NLS_MAP)) && !uopt.nls_map)
1524 uopt.nls_map = load_nls_default();
1526 uopt.flags &= ~(1 << UDF_FLAG_NLS_MAP);
1528 udf_debug("Using default NLS map\n");
1531 if (!(uopt.flags & (1 << UDF_FLAG_NLS_MAP)))
1532 uopt.flags |= (1 << UDF_FLAG_UTF8);
1534 fileset.logicalBlockNum = 0xFFFFFFFF;
1535 fileset.partitionReferenceNum = 0xFFFF;
1537 UDF_SB(sb)->s_flags = uopt.flags;
1538 UDF_SB(sb)->s_uid = uopt.uid;
1539 UDF_SB(sb)->s_gid = uopt.gid;
1540 UDF_SB(sb)->s_umask = uopt.umask;
1541 UDF_SB(sb)->s_nls_map = uopt.nls_map;
1543 /* Set the block size for all transfers */
1544 if (!udf_set_blocksize(sb, uopt.blocksize))
1547 if ( uopt.session == 0xFFFFFFFF )
1548 UDF_SB_SESSION(sb) = udf_get_last_session(sb);
1550 UDF_SB_SESSION(sb) = uopt.session;
1552 udf_debug("Multi-session=%d\n", UDF_SB_SESSION(sb));
1554 UDF_SB_LASTBLOCK(sb) = uopt.lastblock;
1555 UDF_SB_ANCHOR(sb)[0] = UDF_SB_ANCHOR(sb)[1] = 0;
1556 UDF_SB_ANCHOR(sb)[2] = uopt.anchor;
1557 UDF_SB_ANCHOR(sb)[3] = 256;
1559 if (udf_check_valid(sb, uopt.novrs, silent)) /* read volume recognition sequences */
1561 printk("UDF-fs: No VRS found\n");
1565 udf_find_anchor(sb);
1567 /* Fill in the rest of the superblock */
1568 sb->s_op = &udf_sb_ops;
1571 sb->s_magic = UDF_SUPER_MAGIC;
1573 if (udf_load_partition(sb, &fileset))
1575 printk("UDF-fs: No partition found (1)\n");
1579 udf_debug("Lastblock=%d\n", UDF_SB_LASTBLOCK(sb));
1581 if ( UDF_SB_LVIDBH(sb) )
1583 uint16_t minUDFReadRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFReadRev);
1584 uint16_t minUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev);
1585 /* uint16_t maxUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev); */
1587 if (minUDFReadRev > UDF_MAX_READ_VERSION)
1589 printk("UDF-fs: minUDFReadRev=%x (max is %x)\n",
1590 UDF_SB_LVIDIU(sb)->minUDFReadRev, UDF_MAX_READ_VERSION);
1593 else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION)
1595 sb->s_flags |= MS_RDONLY;
1598 UDF_SB_UDFREV(sb) = minUDFWriteRev;
1600 if (minUDFReadRev >= UDF_VERS_USE_EXTENDED_FE)
1601 UDF_SET_FLAG(sb, UDF_FLAG_USE_EXTENDED_FE);
1602 if (minUDFReadRev >= UDF_VERS_USE_STREAMS)
1603 UDF_SET_FLAG(sb, UDF_FLAG_USE_STREAMS);
1606 if ( !UDF_SB_NUMPARTS(sb) )
1608 printk("UDF-fs: No partition found (2)\n");
1612 if ( udf_find_fileset(sb, &fileset, &rootdir) )
1614 printk("UDF-fs: No fileset found\n");
1621 udf_time_to_stamp(&ts, UDF_SB_RECORDTIME(sb));
1622 udf_info("UDF %s (%s) Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
1623 UDFFS_VERSION, UDFFS_DATE,
1624 UDF_SB_VOLIDENT(sb), ts.year, ts.month, ts.day, ts.hour, ts.minute,
1625 ts.typeAndTimezone);
1627 if (!(sb->s_flags & MS_RDONLY))
1630 /* Assign the root inode */
1631 /* assign inodes by physical block number */
1632 /* perhaps it's not extensible enough, but for now ... */
1633 inode = udf_iget(sb, rootdir);
1636 printk("UDF-fs: Error in udf_iget, block=%d, partition=%d\n",
1637 rootdir.logicalBlockNum, rootdir.partitionReferenceNum);
1641 /* Allocate a dentry for the root inode */
1642 sb->s_root = d_alloc_root(inode);
1645 printk("UDF-fs: Couldn't allocate root dentry\n");
1649 sb->s_maxbytes = MAX_LFS_FILESIZE;
1654 iput(UDF_SB_VAT(sb));
1655 if (UDF_SB_NUMPARTS(sb))
1657 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_TABLE)
1658 iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_table);
1659 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_TABLE)
1660 iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_table);
1661 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_BITMAP)
1662 UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_uspace);
1663 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_BITMAP)
1664 UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_fspace);
1665 if (UDF_SB_PARTTYPE(sb, UDF_SB_PARTITION(sb)) == UDF_SPARABLE_MAP15)
1668 udf_release_data(UDF_SB_TYPESPAR(sb, UDF_SB_PARTITION(sb)).s_spar_map[i]);
1671 #ifdef CONFIG_UDF_NLS
1672 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
1673 unload_nls(UDF_SB(sb)->s_nls_map);
1675 if (!(sb->s_flags & MS_RDONLY))
1677 udf_release_data(UDF_SB_LVIDBH(sb));
1680 sb->s_fs_info = NULL;
1684 void udf_error(struct super_block *sb, const char *function,
1685 const char *fmt, ...)
1689 if (!(sb->s_flags & MS_RDONLY))
1694 va_start(args, fmt);
1695 vsprintf(error_buf, fmt, args);
1697 printk (KERN_CRIT "UDF-fs error (device %s): %s: %s\n",
1698 sb->s_id, function, error_buf);
1701 void udf_warning(struct super_block *sb, const char *function,
1702 const char *fmt, ...)
1706 va_start (args, fmt);
1707 vsprintf(error_buf, fmt, args);
1709 printk(KERN_WARNING "UDF-fs warning (device %s): %s: %s\n",
1710 sb->s_id, function, error_buf);
1717 * Prepare for destruction of the superblock.
1720 * Called before the filesystem is unmounted.
1723 * July 1, 1997 - Andrew E. Mileski
1724 * Written, tested, and released.
1727 udf_put_super(struct super_block *sb)
1732 iput(UDF_SB_VAT(sb));
1733 if (UDF_SB_NUMPARTS(sb))
1735 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_TABLE)
1736 iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_table);
1737 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_TABLE)
1738 iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_table);
1739 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_BITMAP)
1740 UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_uspace);
1741 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_BITMAP)
1742 UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_fspace);
1743 if (UDF_SB_PARTTYPE(sb, UDF_SB_PARTITION(sb)) == UDF_SPARABLE_MAP15)
1746 udf_release_data(UDF_SB_TYPESPAR(sb, UDF_SB_PARTITION(sb)).s_spar_map[i]);
1749 #ifdef CONFIG_UDF_NLS
1750 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
1751 unload_nls(UDF_SB(sb)->s_nls_map);
1753 if (!(sb->s_flags & MS_RDONLY))
1755 udf_release_data(UDF_SB_LVIDBH(sb));
1757 kfree(sb->s_fs_info);
1758 sb->s_fs_info = NULL;
1765 * Return info about the filesystem.
1768 * Called by sys_statfs()
1771 * July 1, 1997 - Andrew E. Mileski
1772 * Written, tested, and released.
1775 udf_statfs(struct super_block *sb, struct kstatfs *buf)
1777 buf->f_type = UDF_SUPER_MAGIC;
1778 buf->f_bsize = sb->s_blocksize;
1779 buf->f_blocks = UDF_SB_PARTLEN(sb, UDF_SB_PARTITION(sb));
1780 buf->f_bfree = udf_count_free(sb);
1781 buf->f_bavail = buf->f_bfree;
1782 buf->f_files = (UDF_SB_LVIDBH(sb) ?
1783 (le32_to_cpu(UDF_SB_LVIDIU(sb)->numFiles) +
1784 le32_to_cpu(UDF_SB_LVIDIU(sb)->numDirs)) : 0) + buf->f_bfree;
1785 buf->f_ffree = buf->f_bfree;
1786 /* __kernel_fsid_t f_fsid */
1787 buf->f_namelen = UDF_NAME_LEN-2;
1792 static unsigned char udf_bitmap_lookup[16] = {
1793 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
1797 udf_count_free_bitmap(struct super_block *sb, struct udf_bitmap *bitmap)
1799 struct buffer_head *bh = NULL;
1800 unsigned int accum = 0;
1802 int block = 0, newblock;
1808 struct spaceBitmapDesc *bm;
1812 loc.logicalBlockNum = bitmap->s_extPosition;
1813 loc.partitionReferenceNum = UDF_SB_PARTITION(sb);
1814 bh = udf_read_ptagged(sb, loc, 0, &ident);
1818 printk(KERN_ERR "udf: udf_count_free failed\n");
1821 else if (ident != TAG_IDENT_SBD)
1823 udf_release_data(bh);
1824 printk(KERN_ERR "udf: udf_count_free failed\n");
1828 bm = (struct spaceBitmapDesc *)bh->b_data;
1829 bytes = bm->numOfBytes;
1830 index = sizeof(struct spaceBitmapDesc); /* offset in first block only */
1831 ptr = (uint8_t *)bh->b_data;
1835 while ((bytes > 0) && (index < sb->s_blocksize))
1838 accum += udf_bitmap_lookup[ value & 0x0f ];
1839 accum += udf_bitmap_lookup[ value >> 4 ];
1845 udf_release_data(bh);
1846 newblock = udf_get_lb_pblock(sb, loc, ++block);
1847 bh = udf_tread(sb, newblock);
1850 udf_debug("read failed\n");
1854 ptr = (uint8_t *)bh->b_data;
1857 udf_release_data(bh);
1866 udf_count_free_table(struct super_block *sb, struct inode * table)
1868 unsigned int accum = 0;
1869 uint32_t extoffset, elen;
1872 struct buffer_head *bh = NULL;
1876 bloc = UDF_I_LOCATION(table);
1877 extoffset = sizeof(struct unallocSpaceEntry);
1879 while ((etype = udf_next_aext(table, &bloc, &extoffset, &eloc, &elen, &bh, 1)) != -1)
1881 accum += (elen >> table->i_sb->s_blocksize_bits);
1883 udf_release_data(bh);
1891 udf_count_free(struct super_block *sb)
1893 unsigned int accum = 0;
1895 if (UDF_SB_LVIDBH(sb))
1897 if (le32_to_cpu(UDF_SB_LVID(sb)->numOfPartitions) > UDF_SB_PARTITION(sb))
1899 accum = le32_to_cpu(UDF_SB_LVID(sb)->freeSpaceTable[UDF_SB_PARTITION(sb)]);
1901 if (accum == 0xFFFFFFFF)
1909 if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_BITMAP)
1911 accum += udf_count_free_bitmap(sb,
1912 UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_bitmap);
1914 if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_BITMAP)
1916 accum += udf_count_free_bitmap(sb,
1917 UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_bitmap);
1922 if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_TABLE)
1924 accum += udf_count_free_table(sb,
1925 UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_table);
1927 if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_TABLE)
1929 accum += udf_count_free_table(sb,
1930 UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_table);