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 vol descs
37 * rewrote option handling based on isofs
38 * 12/20/98 find the free space bitmap (if it exists)
43 #include <linux/config.h>
44 #include <linux/blkdev.h>
45 #include <linux/slab.h>
46 #include <linux/kernel.h>
47 #include <linux/module.h>
48 #include <linux/parser.h>
49 #include <linux/stat.h>
50 #include <linux/cdrom.h>
51 #include <linux/nls.h>
52 #include <linux/smp_lock.h>
53 #include <linux/buffer_head.h>
54 #include <linux/vfs.h>
55 #include <linux/vmalloc.h>
56 #include <asm/byteorder.h>
58 #include <linux/udf_fs.h>
62 #include <linux/init.h>
63 #include <asm/uaccess.h>
65 #define VDS_POS_PRIMARY_VOL_DESC 0
66 #define VDS_POS_UNALLOC_SPACE_DESC 1
67 #define VDS_POS_LOGICAL_VOL_DESC 2
68 #define VDS_POS_PARTITION_DESC 3
69 #define VDS_POS_IMP_USE_VOL_DESC 4
70 #define VDS_POS_VOL_DESC_PTR 5
71 #define VDS_POS_TERMINATING_DESC 6
72 #define VDS_POS_LENGTH 7
74 static char error_buf[1024];
76 /* These are the "meat" - everything else is stuffing */
77 static int udf_fill_super(struct super_block *, void *, int);
78 static void udf_put_super(struct super_block *);
79 static void udf_write_super(struct super_block *);
80 static int udf_remount_fs(struct super_block *, int *, char *);
81 static int udf_check_valid(struct super_block *, int, int);
82 static int udf_vrs(struct super_block *sb, int silent);
83 static int udf_load_partition(struct super_block *, kernel_lb_addr *);
84 static int udf_load_logicalvol(struct super_block *, struct buffer_head *, kernel_lb_addr *);
85 static void udf_load_logicalvolint(struct super_block *, kernel_extent_ad);
86 static void udf_find_anchor(struct super_block *);
87 static int udf_find_fileset(struct super_block *, kernel_lb_addr *, kernel_lb_addr *);
88 static void udf_load_pvoldesc(struct super_block *, struct buffer_head *);
89 static void udf_load_fileset(struct super_block *, struct buffer_head *, kernel_lb_addr *);
90 static void udf_load_partdesc(struct super_block *, struct buffer_head *);
91 static void udf_open_lvid(struct super_block *);
92 static void udf_close_lvid(struct super_block *);
93 static unsigned int udf_count_free(struct super_block *);
94 static int udf_statfs(struct super_block *, struct kstatfs *);
96 /* UDF filesystem type */
97 static struct super_block *udf_get_sb(struct file_system_type *fs_type,
98 int flags, const char *dev_name, void *data)
100 return get_sb_bdev(fs_type, flags, dev_name, data, udf_fill_super);
103 static struct file_system_type udf_fstype = {
104 .owner = THIS_MODULE,
106 .get_sb = udf_get_sb,
107 .kill_sb = kill_block_super,
108 .fs_flags = FS_REQUIRES_DEV,
111 static kmem_cache_t * udf_inode_cachep;
113 static struct inode *udf_alloc_inode(struct super_block *sb)
115 struct udf_inode_info *ei;
116 ei = (struct udf_inode_info *)kmem_cache_alloc(udf_inode_cachep, SLAB_KERNEL);
119 return &ei->vfs_inode;
122 static void udf_destroy_inode(struct inode *inode)
124 kmem_cache_free(udf_inode_cachep, UDF_I(inode));
127 static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
129 struct udf_inode_info *ei = (struct udf_inode_info *) foo;
131 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
132 SLAB_CTOR_CONSTRUCTOR)
134 ei->i_ext.i_data = NULL;
135 inode_init_once(&ei->vfs_inode);
139 static int init_inodecache(void)
141 udf_inode_cachep = kmem_cache_create("udf_inode_cache",
142 sizeof(struct udf_inode_info),
143 0, SLAB_RECLAIM_ACCOUNT,
145 if (udf_inode_cachep == NULL)
150 static void destroy_inodecache(void)
152 if (kmem_cache_destroy(udf_inode_cachep))
153 printk(KERN_INFO "udf_inode_cache: not all structures were freed\n");
156 /* Superblock operations */
157 static struct super_operations udf_sb_ops = {
158 .alloc_inode = udf_alloc_inode,
159 .destroy_inode = udf_destroy_inode,
160 .write_inode = udf_write_inode,
161 .delete_inode = udf_delete_inode,
162 .clear_inode = udf_clear_inode,
163 .put_super = udf_put_super,
164 .write_super = udf_write_super,
165 .statfs = udf_statfs,
166 .remount_fs = udf_remount_fs,
172 unsigned int blocksize;
173 unsigned int session;
174 unsigned int lastblock;
177 unsigned short partition;
178 unsigned int fileset;
179 unsigned int rootdir;
184 struct nls_table *nls_map;
187 static int __init init_udf_fs(void)
190 err = init_inodecache();
193 err = register_filesystem(&udf_fstype);
198 destroy_inodecache();
203 static void __exit exit_udf_fs(void)
205 unregister_filesystem(&udf_fstype);
206 destroy_inodecache();
209 module_init(init_udf_fs)
210 module_exit(exit_udf_fs)
216 * Parse mount options.
219 * The following mount options are supported:
221 * gid= Set the default group.
222 * umask= Set the default umask.
223 * uid= Set the default user.
224 * bs= Set the block size.
225 * unhide Show otherwise hidden files.
226 * undelete Show deleted files in lists.
227 * adinicb Embed data in the inode (default)
228 * noadinicb Don't embed data in the inode
229 * shortad Use short ad's
230 * longad Use long ad's (default)
231 * nostrict Unset strict conformance
232 * iocharset= Set the NLS character set
234 * The remaining are for debugging and disaster recovery:
236 * novrs Skip volume sequence recognition
238 * The following expect a offset from 0.
240 * session= Set the CDROM session (default= last session)
241 * anchor= Override standard anchor location. (default= 256)
242 * volume= Override the VolumeDesc location. (unused)
243 * partition= Override the PartitionDesc location. (unused)
244 * lastblock= Set the last block of the filesystem/
246 * The following expect a offset from the partition root.
248 * fileset= Override the fileset block location. (unused)
249 * rootdir= Override the root directory location. (unused)
250 * WARNING: overriding the rootdir to a non-directory may
251 * yield highly unpredictable results.
254 * options Pointer to mount options string.
255 * uopts Pointer to mount options variable.
258 * <return> 1 Mount options parsed okay.
259 * <return> 0 Error parsing mount options.
262 * July 1, 1997 - Andrew E. Mileski
263 * Written, tested, and released.
267 Opt_novrs, Opt_nostrict, Opt_bs, Opt_unhide, Opt_undelete,
268 Opt_noadinicb, Opt_adinicb, Opt_shortad, Opt_longad,
269 Opt_gid, Opt_uid, Opt_umask, Opt_session, Opt_lastblock,
270 Opt_anchor, Opt_volume, Opt_partition, Opt_fileset,
271 Opt_rootdir, Opt_utf8, Opt_iocharset,
272 Opt_err, Opt_uforget, Opt_uignore, Opt_gforget, Opt_gignore
275 static match_table_t tokens = {
276 {Opt_novrs, "novrs"},
277 {Opt_nostrict, "nostrict"},
279 {Opt_unhide, "unhide"},
280 {Opt_undelete, "undelete"},
281 {Opt_noadinicb, "noadinicb"},
282 {Opt_adinicb, "adinicb"},
283 {Opt_shortad, "shortad"},
284 {Opt_longad, "longad"},
285 {Opt_uforget, "uid=forget"},
286 {Opt_uignore, "uid=ignore"},
287 {Opt_gforget, "gid=forget"},
288 {Opt_gignore, "gid=ignore"},
291 {Opt_umask, "umask=%o"},
292 {Opt_session, "session=%u"},
293 {Opt_lastblock, "lastblock=%u"},
294 {Opt_anchor, "anchor=%u"},
295 {Opt_volume, "volume=%u"},
296 {Opt_partition, "partition=%u"},
297 {Opt_fileset, "fileset=%u"},
298 {Opt_rootdir, "rootdir=%u"},
300 {Opt_iocharset, "iocharset=%s"},
305 udf_parse_options(char *options, struct udf_options *uopt)
311 uopt->blocksize = 2048;
312 uopt->partition = 0xFFFF;
313 uopt->session = 0xFFFFFFFF;
316 uopt->volume = 0xFFFFFFFF;
317 uopt->rootdir = 0xFFFFFFFF;
318 uopt->fileset = 0xFFFFFFFF;
319 uopt->nls_map = NULL;
324 while ((p = strsep(&options, ",")) != NULL)
326 substring_t args[MAX_OPT_ARGS];
331 token = match_token(p, tokens, args);
337 if (match_int(&args[0], &option))
339 uopt->blocksize = option;
342 uopt->flags |= (1 << UDF_FLAG_UNHIDE);
345 uopt->flags |= (1 << UDF_FLAG_UNDELETE);
348 uopt->flags &= ~(1 << UDF_FLAG_USE_AD_IN_ICB);
351 uopt->flags |= (1 << UDF_FLAG_USE_AD_IN_ICB);
354 uopt->flags |= (1 << UDF_FLAG_USE_SHORT_AD);
357 uopt->flags &= ~(1 << UDF_FLAG_USE_SHORT_AD);
360 if (match_int(args, &option))
365 if (match_int(args, &option))
370 if (match_octal(args, &option))
372 uopt->umask = option;
375 uopt->flags &= ~(1 << UDF_FLAG_STRICT);
378 if (match_int(args, &option))
380 uopt->session = option;
383 if (match_int(args, &option))
385 uopt->lastblock = option;
388 if (match_int(args, &option))
390 uopt->anchor = option;
393 if (match_int(args, &option))
395 uopt->volume = option;
398 if (match_int(args, &option))
400 uopt->partition = option;
403 if (match_int(args, &option))
405 uopt->fileset = option;
408 if (match_int(args, &option))
410 uopt->rootdir = option;
413 uopt->flags |= (1 << UDF_FLAG_UTF8);
415 #ifdef CONFIG_UDF_NLS
417 uopt->nls_map = load_nls(args[0].from);
418 uopt->flags |= (1 << UDF_FLAG_NLS_MAP);
422 uopt->flags |= (1 << UDF_FLAG_UID_IGNORE);
425 uopt->flags |= (1 << UDF_FLAG_UID_FORGET);
428 uopt->flags |= (1 << UDF_FLAG_GID_IGNORE);
431 uopt->flags |= (1 << UDF_FLAG_GID_FORGET);
434 printk(KERN_ERR "udf: bad mount option \"%s\" "
435 "or missing value\n", p);
443 udf_write_super(struct super_block *sb)
446 if (!(sb->s_flags & MS_RDONLY))
453 udf_remount_fs(struct super_block *sb, int *flags, char *options)
455 struct udf_options uopt;
457 uopt.flags = UDF_SB(sb)->s_flags ;
458 uopt.uid = UDF_SB(sb)->s_uid ;
459 uopt.gid = UDF_SB(sb)->s_gid ;
460 uopt.umask = UDF_SB(sb)->s_umask ;
462 if ( !udf_parse_options(options, &uopt) )
465 UDF_SB(sb)->s_flags = uopt.flags;
466 UDF_SB(sb)->s_uid = uopt.uid;
467 UDF_SB(sb)->s_gid = uopt.gid;
468 UDF_SB(sb)->s_umask = uopt.umask;
470 if (UDF_SB_LVIDBH(sb)) {
471 int write_rev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev);
472 if (write_rev > UDF_MAX_WRITE_VERSION)
476 if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
478 if (*flags & MS_RDONLY)
490 * Set the block size to be used in all transfers.
493 * To allow room for a DMA transfer, it is best to guess big when unsure.
494 * This routine picks 2048 bytes as the blocksize when guessing. This
495 * should be adequate until devices with larger block sizes become common.
497 * Note that the Linux kernel can currently only deal with blocksizes of
498 * 512, 1024, 2048, 4096, and 8192 bytes.
501 * sb Pointer to _locked_ superblock.
504 * sb->s_blocksize Blocksize.
505 * sb->s_blocksize_bits log2 of blocksize.
506 * <return> 0 Blocksize is valid.
507 * <return> 1 Blocksize is invalid.
510 * July 1, 1997 - Andrew E. Mileski
511 * Written, tested, and released.
514 udf_set_blocksize(struct super_block *sb, int bsize)
516 if (!sb_min_blocksize(sb, bsize)) {
517 udf_debug("Bad block size (%d)\n", bsize);
518 printk(KERN_ERR "udf: bad block size (%d)\n", bsize);
521 return sb->s_blocksize;
525 udf_vrs(struct super_block *sb, int silent)
527 struct volStructDesc *vsd = NULL;
530 struct buffer_head *bh = NULL;
535 /* Block size must be a multiple of 512 */
536 if (sb->s_blocksize & 511)
539 if (sb->s_blocksize < sizeof(struct volStructDesc))
540 sectorsize = sizeof(struct volStructDesc);
542 sectorsize = sb->s_blocksize;
544 sector += (UDF_SB_SESSION(sb) << sb->s_blocksize_bits);
546 udf_debug("Starting at sector %u (%ld byte sectors)\n",
547 (sector >> sb->s_blocksize_bits), sb->s_blocksize);
548 /* Process the sequence (if applicable) */
549 for (;!nsr02 && !nsr03; sector += sectorsize)
552 bh = udf_tread(sb, sector >> sb->s_blocksize_bits);
556 /* Look for ISO descriptors */
557 vsd = (struct volStructDesc *)(bh->b_data +
558 (sector & (sb->s_blocksize - 1)));
560 if (vsd->stdIdent[0] == 0)
562 udf_release_data(bh);
565 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001, VSD_STD_ID_LEN))
568 switch (vsd->structType)
571 udf_debug("ISO9660 Boot Record found\n");
574 udf_debug("ISO9660 Primary Volume Descriptor found\n");
577 udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
580 udf_debug("ISO9660 Volume Partition Descriptor found\n");
583 udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
586 udf_debug("ISO9660 VRS (%u) found\n", vsd->structType);
590 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BEA01, VSD_STD_ID_LEN))
593 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_TEA01, VSD_STD_ID_LEN))
595 udf_release_data(bh);
598 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR02, VSD_STD_ID_LEN))
602 else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR03, VSD_STD_ID_LEN))
606 udf_release_data(bh);
613 else if (sector - (UDF_SB_SESSION(sb) << sb->s_blocksize_bits) == 32768)
623 * Find an anchor volume descriptor.
626 * sb Pointer to _locked_ superblock.
627 * lastblock Last block on media.
630 * <return> 1 if not found, 0 if ok
633 * July 1, 1997 - Andrew E. Mileski
634 * Written, tested, and released.
637 udf_find_anchor(struct super_block *sb)
639 int lastblock = UDF_SB_LASTBLOCK(sb);
640 struct buffer_head *bh = NULL;
647 int varlastblock = udf_variable_to_fixed(lastblock);
648 int last[] = { lastblock, lastblock - 2,
649 lastblock - 150, lastblock - 152,
650 varlastblock, varlastblock - 2,
651 varlastblock - 150, varlastblock - 152 };
655 /* Search for an anchor volume descriptor pointer */
657 /* according to spec, anchor is in either:
661 * however, if the disc isn't closed, it could be 512 */
663 for (i=0; (!lastblock && i<sizeof(last)/sizeof(int)); i++)
665 if (last[i] < 0 || !(bh = sb_bread(sb, last[i])))
667 ident = location = 0;
671 ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
672 location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
673 udf_release_data(bh);
676 if (ident == TAG_IDENT_AVDP)
678 if (location == last[i] - UDF_SB_SESSION(sb))
680 lastblock = UDF_SB_ANCHOR(sb)[0] = last[i] - UDF_SB_SESSION(sb);
681 UDF_SB_ANCHOR(sb)[1] = last[i] - 256 - UDF_SB_SESSION(sb);
683 else if (location == udf_variable_to_fixed(last[i]) - UDF_SB_SESSION(sb))
685 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
686 lastblock = UDF_SB_ANCHOR(sb)[0] = udf_variable_to_fixed(last[i]) - UDF_SB_SESSION(sb);
687 UDF_SB_ANCHOR(sb)[1] = lastblock - 256 - UDF_SB_SESSION(sb);
690 udf_debug("Anchor found at block %d, location mismatch %d.\n",
693 else if (ident == TAG_IDENT_FE || ident == TAG_IDENT_EFE)
696 UDF_SB_ANCHOR(sb)[3] = 512;
700 if (last[i] < 256 || !(bh = sb_bread(sb, last[i] - 256)))
702 ident = location = 0;
706 ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
707 location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
708 udf_release_data(bh);
711 if (ident == TAG_IDENT_AVDP &&
712 location == last[i] - 256 - UDF_SB_SESSION(sb))
715 UDF_SB_ANCHOR(sb)[1] = last[i] - 256;
719 if (last[i] < 312 + UDF_SB_SESSION(sb) || !(bh = sb_bread(sb, last[i] - 312 - UDF_SB_SESSION(sb))))
721 ident = location = 0;
725 ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
726 location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
727 udf_release_data(bh);
730 if (ident == TAG_IDENT_AVDP &&
731 location == udf_variable_to_fixed(last[i]) - 256)
733 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
734 lastblock = udf_variable_to_fixed(last[i]);
735 UDF_SB_ANCHOR(sb)[1] = lastblock - 256;
744 /* We havn't found the lastblock. check 312 */
745 if ((bh = sb_bread(sb, 312 + UDF_SB_SESSION(sb))))
747 ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
748 location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
749 udf_release_data(bh);
751 if (ident == TAG_IDENT_AVDP && location == 256)
752 UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
756 for (i=0; i<sizeof(UDF_SB_ANCHOR(sb))/sizeof(int); i++)
758 if (UDF_SB_ANCHOR(sb)[i])
760 if (!(bh = udf_read_tagged(sb,
761 UDF_SB_ANCHOR(sb)[i], UDF_SB_ANCHOR(sb)[i], &ident)))
763 UDF_SB_ANCHOR(sb)[i] = 0;
767 udf_release_data(bh);
768 if ((ident != TAG_IDENT_AVDP) && (i ||
769 (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE)))
771 UDF_SB_ANCHOR(sb)[i] = 0;
777 UDF_SB_LASTBLOCK(sb) = lastblock;
781 udf_find_fileset(struct super_block *sb, kernel_lb_addr *fileset, kernel_lb_addr *root)
783 struct buffer_head *bh = NULL;
787 if (fileset->logicalBlockNum != 0xFFFFFFFF ||
788 fileset->partitionReferenceNum != 0xFFFF)
790 bh = udf_read_ptagged(sb, *fileset, 0, &ident);
794 else if (ident != TAG_IDENT_FSD)
796 udf_release_data(bh);
802 if (!bh) /* Search backwards through the partitions */
804 kernel_lb_addr newfileset;
808 for (newfileset.partitionReferenceNum=UDF_SB_NUMPARTS(sb)-1;
809 (newfileset.partitionReferenceNum != 0xFFFF &&
810 fileset->logicalBlockNum == 0xFFFFFFFF &&
811 fileset->partitionReferenceNum == 0xFFFF);
812 newfileset.partitionReferenceNum--)
814 lastblock = UDF_SB_PARTLEN(sb, newfileset.partitionReferenceNum);
815 newfileset.logicalBlockNum = 0;
819 bh = udf_read_ptagged(sb, newfileset, 0, &ident);
822 newfileset.logicalBlockNum ++;
830 struct spaceBitmapDesc *sp;
831 sp = (struct spaceBitmapDesc *)bh->b_data;
832 newfileset.logicalBlockNum += 1 +
833 ((le32_to_cpu(sp->numOfBytes) + sizeof(struct spaceBitmapDesc) - 1)
834 >> sb->s_blocksize_bits);
835 udf_release_data(bh);
840 *fileset = newfileset;
845 newfileset.logicalBlockNum ++;
846 udf_release_data(bh);
852 while (newfileset.logicalBlockNum < lastblock &&
853 fileset->logicalBlockNum == 0xFFFFFFFF &&
854 fileset->partitionReferenceNum == 0xFFFF);
858 if ((fileset->logicalBlockNum != 0xFFFFFFFF ||
859 fileset->partitionReferenceNum != 0xFFFF) && bh)
861 udf_debug("Fileset at block=%d, partition=%d\n",
862 fileset->logicalBlockNum, fileset->partitionReferenceNum);
864 UDF_SB_PARTITION(sb) = fileset->partitionReferenceNum;
865 udf_load_fileset(sb, bh, root);
866 udf_release_data(bh);
873 udf_load_pvoldesc(struct super_block *sb, struct buffer_head *bh)
875 struct primaryVolDesc *pvoldesc;
881 pvoldesc = (struct primaryVolDesc *)bh->b_data;
883 if ( udf_stamp_to_time(&recording, &recording_usec,
884 lets_to_cpu(pvoldesc->recordingDateAndTime)) )
887 ts = lets_to_cpu(pvoldesc->recordingDateAndTime);
888 udf_debug("recording time %ld/%ld, %04u/%02u/%02u %02u:%02u (%x)\n",
889 recording, recording_usec,
890 ts.year, ts.month, ts.day, ts.hour, ts.minute, ts.typeAndTimezone);
891 UDF_SB_RECORDTIME(sb).tv_sec = recording;
892 UDF_SB_RECORDTIME(sb).tv_nsec = recording_usec * 1000;
895 if ( !udf_build_ustr(&instr, pvoldesc->volIdent, 32) )
897 if (udf_CS0toUTF8(&outstr, &instr))
899 strncpy( UDF_SB_VOLIDENT(sb), outstr.u_name,
900 outstr.u_len > 31 ? 31 : outstr.u_len);
901 udf_debug("volIdent[] = '%s'\n", UDF_SB_VOLIDENT(sb));
905 if ( !udf_build_ustr(&instr, pvoldesc->volSetIdent, 128) )
907 if (udf_CS0toUTF8(&outstr, &instr))
908 udf_debug("volSetIdent[] = '%s'\n", outstr.u_name);
913 udf_load_fileset(struct super_block *sb, struct buffer_head *bh, kernel_lb_addr *root)
915 struct fileSetDesc *fset;
917 fset = (struct fileSetDesc *)bh->b_data;
919 *root = lelb_to_cpu(fset->rootDirectoryICB.extLocation);
921 UDF_SB_SERIALNUM(sb) = le16_to_cpu(fset->descTag.tagSerialNum);
923 udf_debug("Rootdir at block=%d, partition=%d\n",
924 root->logicalBlockNum, root->partitionReferenceNum);
928 udf_load_partdesc(struct super_block *sb, struct buffer_head *bh)
930 struct partitionDesc *p;
933 p = (struct partitionDesc *)bh->b_data;
935 for (i=0; i<UDF_SB_NUMPARTS(sb); i++)
937 udf_debug("Searching map: (%d == %d)\n",
938 UDF_SB_PARTMAPS(sb)[i].s_partition_num, le16_to_cpu(p->partitionNumber));
939 if (UDF_SB_PARTMAPS(sb)[i].s_partition_num == le16_to_cpu(p->partitionNumber))
941 UDF_SB_PARTLEN(sb,i) = le32_to_cpu(p->partitionLength); /* blocks */
942 UDF_SB_PARTROOT(sb,i) = le32_to_cpu(p->partitionStartingLocation);
943 if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_READ_ONLY)
944 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_READ_ONLY;
945 if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_WRITE_ONCE)
946 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_WRITE_ONCE;
947 if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_REWRITABLE)
948 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_REWRITABLE;
949 if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_OVERWRITABLE)
950 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_OVERWRITABLE;
952 if (!strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR02) ||
953 !strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR03))
955 struct partitionHeaderDesc *phd;
957 phd = (struct partitionHeaderDesc *)(p->partitionContentsUse);
958 if (phd->unallocSpaceTable.extLength)
960 kernel_lb_addr loc = { le32_to_cpu(phd->unallocSpaceTable.extPosition), i };
962 UDF_SB_PARTMAPS(sb)[i].s_uspace.s_table =
964 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_UNALLOC_TABLE;
965 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
966 i, UDF_SB_PARTMAPS(sb)[i].s_uspace.s_table->i_ino);
968 if (phd->unallocSpaceBitmap.extLength)
970 UDF_SB_ALLOC_BITMAP(sb, i, s_uspace);
971 if (UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap != NULL)
973 UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap->s_extLength =
974 le32_to_cpu(phd->unallocSpaceBitmap.extLength);
975 UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap->s_extPosition =
976 le32_to_cpu(phd->unallocSpaceBitmap.extPosition);
977 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_UNALLOC_BITMAP;
978 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
979 i, UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap->s_extPosition);
982 if (phd->partitionIntegrityTable.extLength)
983 udf_debug("partitionIntegrityTable (part %d)\n", i);
984 if (phd->freedSpaceTable.extLength)
986 kernel_lb_addr loc = { le32_to_cpu(phd->freedSpaceTable.extPosition), i };
988 UDF_SB_PARTMAPS(sb)[i].s_fspace.s_table =
990 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_FREED_TABLE;
991 udf_debug("freedSpaceTable (part %d) @ %ld\n",
992 i, UDF_SB_PARTMAPS(sb)[i].s_fspace.s_table->i_ino);
994 if (phd->freedSpaceBitmap.extLength)
996 UDF_SB_ALLOC_BITMAP(sb, i, s_fspace);
997 if (UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap != NULL)
999 UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap->s_extLength =
1000 le32_to_cpu(phd->freedSpaceBitmap.extLength);
1001 UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap->s_extPosition =
1002 le32_to_cpu(phd->freedSpaceBitmap.extPosition);
1003 UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_FREED_BITMAP;
1004 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1005 i, UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap->s_extPosition);
1012 if (i == UDF_SB_NUMPARTS(sb))
1014 udf_debug("Partition (%d) not found in partition map\n", le16_to_cpu(p->partitionNumber));
1018 udf_debug("Partition (%d:%d type %x) starts at physical %d, block length %d\n",
1019 le16_to_cpu(p->partitionNumber), i, UDF_SB_PARTTYPE(sb,i),
1020 UDF_SB_PARTROOT(sb,i), UDF_SB_PARTLEN(sb,i));
1025 udf_load_logicalvol(struct super_block *sb, struct buffer_head * bh, kernel_lb_addr *fileset)
1027 struct logicalVolDesc *lvd;
1031 lvd = (struct logicalVolDesc *)bh->b_data;
1033 UDF_SB_ALLOC_PARTMAPS(sb, le32_to_cpu(lvd->numPartitionMaps));
1036 i<UDF_SB_NUMPARTS(sb) && offset<le32_to_cpu(lvd->mapTableLength);
1037 i++,offset+=((struct genericPartitionMap *)&(lvd->partitionMaps[offset]))->partitionMapLength)
1039 type = ((struct genericPartitionMap *)&(lvd->partitionMaps[offset]))->partitionMapType;
1042 struct genericPartitionMap1 *gpm1 = (struct genericPartitionMap1 *)&(lvd->partitionMaps[offset]);
1043 UDF_SB_PARTTYPE(sb,i) = UDF_TYPE1_MAP15;
1044 UDF_SB_PARTVSN(sb,i) = le16_to_cpu(gpm1->volSeqNum);
1045 UDF_SB_PARTNUM(sb,i) = le16_to_cpu(gpm1->partitionNum);
1046 UDF_SB_PARTFUNC(sb,i) = NULL;
1050 struct udfPartitionMap2 *upm2 = (struct udfPartitionMap2 *)&(lvd->partitionMaps[offset]);
1051 if (!strncmp(upm2->partIdent.ident, UDF_ID_VIRTUAL, strlen(UDF_ID_VIRTUAL)))
1053 if (le16_to_cpu(((__le16 *)upm2->partIdent.identSuffix)[0]) == 0x0150)
1055 UDF_SB_PARTTYPE(sb,i) = UDF_VIRTUAL_MAP15;
1056 UDF_SB_PARTFUNC(sb,i) = udf_get_pblock_virt15;
1058 else if (le16_to_cpu(((__le16 *)upm2->partIdent.identSuffix)[0]) == 0x0200)
1060 UDF_SB_PARTTYPE(sb,i) = UDF_VIRTUAL_MAP20;
1061 UDF_SB_PARTFUNC(sb,i) = udf_get_pblock_virt20;
1064 else if (!strncmp(upm2->partIdent.ident, UDF_ID_SPARABLE, strlen(UDF_ID_SPARABLE)))
1068 struct sparingTable *st;
1069 struct sparablePartitionMap *spm = (struct sparablePartitionMap *)&(lvd->partitionMaps[offset]);
1071 UDF_SB_PARTTYPE(sb,i) = UDF_SPARABLE_MAP15;
1072 UDF_SB_TYPESPAR(sb,i).s_packet_len = le16_to_cpu(spm->packetLength);
1073 for (j=0; j<spm->numSparingTables; j++)
1075 loc = le32_to_cpu(spm->locSparingTable[j]);
1076 UDF_SB_TYPESPAR(sb,i).s_spar_map[j] =
1077 udf_read_tagged(sb, loc, loc, &ident);
1078 if (UDF_SB_TYPESPAR(sb,i).s_spar_map[j] != NULL)
1080 st = (struct sparingTable *)UDF_SB_TYPESPAR(sb,i).s_spar_map[j]->b_data;
1082 strncmp(st->sparingIdent.ident, UDF_ID_SPARING, strlen(UDF_ID_SPARING)))
1084 udf_release_data(UDF_SB_TYPESPAR(sb,i).s_spar_map[j]);
1085 UDF_SB_TYPESPAR(sb,i).s_spar_map[j] = NULL;
1089 UDF_SB_PARTFUNC(sb,i) = udf_get_pblock_spar15;
1093 udf_debug("Unknown ident: %s\n", upm2->partIdent.ident);
1096 UDF_SB_PARTVSN(sb,i) = le16_to_cpu(upm2->volSeqNum);
1097 UDF_SB_PARTNUM(sb,i) = le16_to_cpu(upm2->partitionNum);
1099 udf_debug("Partition (%d:%d) type %d on volume %d\n",
1100 i, UDF_SB_PARTNUM(sb,i), type, UDF_SB_PARTVSN(sb,i));
1105 long_ad *la = (long_ad *)&(lvd->logicalVolContentsUse[0]);
1107 *fileset = lelb_to_cpu(la->extLocation);
1108 udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
1109 fileset->logicalBlockNum,
1110 fileset->partitionReferenceNum);
1112 if (lvd->integritySeqExt.extLength)
1113 udf_load_logicalvolint(sb, leea_to_cpu(lvd->integritySeqExt));
1118 * udf_load_logicalvolint
1122 udf_load_logicalvolint(struct super_block *sb, kernel_extent_ad loc)
1124 struct buffer_head *bh = NULL;
1127 while (loc.extLength > 0 &&
1128 (bh = udf_read_tagged(sb, loc.extLocation,
1129 loc.extLocation, &ident)) &&
1130 ident == TAG_IDENT_LVID)
1132 UDF_SB_LVIDBH(sb) = bh;
1134 if (UDF_SB_LVID(sb)->nextIntegrityExt.extLength)
1135 udf_load_logicalvolint(sb, leea_to_cpu(UDF_SB_LVID(sb)->nextIntegrityExt));
1137 if (UDF_SB_LVIDBH(sb) != bh)
1138 udf_release_data(bh);
1139 loc.extLength -= sb->s_blocksize;
1142 if (UDF_SB_LVIDBH(sb) != bh)
1143 udf_release_data(bh);
1147 * udf_process_sequence
1150 * Process a main/reserve volume descriptor sequence.
1153 * sb Pointer to _locked_ superblock.
1154 * block First block of first extent of the sequence.
1155 * lastblock Lastblock of first extent of the sequence.
1158 * July 1, 1997 - Andrew E. Mileski
1159 * Written, tested, and released.
1162 udf_process_sequence(struct super_block *sb, long block, long lastblock, kernel_lb_addr *fileset)
1164 struct buffer_head *bh = NULL;
1165 struct udf_vds_record vds[VDS_POS_LENGTH];
1166 struct generic_desc *gd;
1167 struct volDescPtr *vdp;
1172 long next_s = 0, next_e = 0;
1174 memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH);
1176 /* Read the main descriptor sequence */
1177 for (;(!done && block <= lastblock); block++)
1180 bh = udf_read_tagged(sb, block, block, &ident);
1184 /* Process each descriptor (ISO 13346 3/8.3-8.4) */
1185 gd = (struct generic_desc *)bh->b_data;
1186 vdsn = le32_to_cpu(gd->volDescSeqNum);
1189 case TAG_IDENT_PVD: /* ISO 13346 3/10.1 */
1190 if (vdsn >= vds[VDS_POS_PRIMARY_VOL_DESC].volDescSeqNum)
1192 vds[VDS_POS_PRIMARY_VOL_DESC].volDescSeqNum = vdsn;
1193 vds[VDS_POS_PRIMARY_VOL_DESC].block = block;
1196 case TAG_IDENT_VDP: /* ISO 13346 3/10.3 */
1197 if (vdsn >= vds[VDS_POS_VOL_DESC_PTR].volDescSeqNum)
1199 vds[VDS_POS_VOL_DESC_PTR].volDescSeqNum = vdsn;
1200 vds[VDS_POS_VOL_DESC_PTR].block = block;
1202 vdp = (struct volDescPtr *)bh->b_data;
1203 next_s = le32_to_cpu(vdp->nextVolDescSeqExt.extLocation);
1204 next_e = le32_to_cpu(vdp->nextVolDescSeqExt.extLength);
1205 next_e = next_e >> sb->s_blocksize_bits;
1209 case TAG_IDENT_IUVD: /* ISO 13346 3/10.4 */
1210 if (vdsn >= vds[VDS_POS_IMP_USE_VOL_DESC].volDescSeqNum)
1212 vds[VDS_POS_IMP_USE_VOL_DESC].volDescSeqNum = vdsn;
1213 vds[VDS_POS_IMP_USE_VOL_DESC].block = block;
1216 case TAG_IDENT_PD: /* ISO 13346 3/10.5 */
1217 if (!vds[VDS_POS_PARTITION_DESC].block)
1218 vds[VDS_POS_PARTITION_DESC].block = block;
1220 case TAG_IDENT_LVD: /* ISO 13346 3/10.6 */
1221 if (vdsn >= vds[VDS_POS_LOGICAL_VOL_DESC].volDescSeqNum)
1223 vds[VDS_POS_LOGICAL_VOL_DESC].volDescSeqNum = vdsn;
1224 vds[VDS_POS_LOGICAL_VOL_DESC].block = block;
1227 case TAG_IDENT_USD: /* ISO 13346 3/10.8 */
1228 if (vdsn >= vds[VDS_POS_UNALLOC_SPACE_DESC].volDescSeqNum)
1230 vds[VDS_POS_UNALLOC_SPACE_DESC].volDescSeqNum = vdsn;
1231 vds[VDS_POS_UNALLOC_SPACE_DESC].block = block;
1234 case TAG_IDENT_TD: /* ISO 13346 3/10.9 */
1235 vds[VDS_POS_TERMINATING_DESC].block = block;
1240 next_s = next_e = 0;
1246 udf_release_data(bh);
1248 for (i=0; i<VDS_POS_LENGTH; i++)
1252 bh = udf_read_tagged(sb, vds[i].block, vds[i].block, &ident);
1254 if (i == VDS_POS_PRIMARY_VOL_DESC)
1255 udf_load_pvoldesc(sb, bh);
1256 else if (i == VDS_POS_LOGICAL_VOL_DESC)
1257 udf_load_logicalvol(sb, bh, fileset);
1258 else if (i == VDS_POS_PARTITION_DESC)
1260 struct buffer_head *bh2 = NULL;
1261 udf_load_partdesc(sb, bh);
1262 for (j=vds[i].block+1; j<vds[VDS_POS_TERMINATING_DESC].block; j++)
1264 bh2 = udf_read_tagged(sb, j, j, &ident);
1265 gd = (struct generic_desc *)bh2->b_data;
1266 if (ident == TAG_IDENT_PD)
1267 udf_load_partdesc(sb, bh2);
1268 udf_release_data(bh2);
1271 udf_release_data(bh);
1282 udf_check_valid(struct super_block *sb, int novrs, int silent)
1288 udf_debug("Validity check skipped because of novrs option\n");
1291 /* Check that it is NSR02 compliant */
1292 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
1293 else if ((block = udf_vrs(sb, silent)) == -1)
1295 udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
1296 if (!UDF_SB_LASTBLOCK(sb))
1297 UDF_SB_LASTBLOCK(sb) = udf_get_last_block(sb);
1305 udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
1307 struct anchorVolDescPtr *anchor;
1309 struct buffer_head *bh;
1310 long main_s, main_e, reserve_s, reserve_e;
1316 for (i=0; i<sizeof(UDF_SB_ANCHOR(sb))/sizeof(int); i++)
1318 if (UDF_SB_ANCHOR(sb)[i] && (bh = udf_read_tagged(sb,
1319 UDF_SB_ANCHOR(sb)[i], UDF_SB_ANCHOR(sb)[i], &ident)))
1321 anchor = (struct anchorVolDescPtr *)bh->b_data;
1323 /* Locate the main sequence */
1324 main_s = le32_to_cpu( anchor->mainVolDescSeqExt.extLocation );
1325 main_e = le32_to_cpu( anchor->mainVolDescSeqExt.extLength );
1326 main_e = main_e >> sb->s_blocksize_bits;
1329 /* Locate the reserve sequence */
1330 reserve_s = le32_to_cpu(anchor->reserveVolDescSeqExt.extLocation);
1331 reserve_e = le32_to_cpu(anchor->reserveVolDescSeqExt.extLength);
1332 reserve_e = reserve_e >> sb->s_blocksize_bits;
1333 reserve_e += reserve_s;
1335 udf_release_data(bh);
1337 /* Process the main & reserve sequences */
1338 /* responsible for finding the PartitionDesc(s) */
1339 if (!(udf_process_sequence(sb, main_s, main_e, fileset) &&
1340 udf_process_sequence(sb, reserve_s, reserve_e, fileset)))
1347 if (i == sizeof(UDF_SB_ANCHOR(sb))/sizeof(int))
1349 udf_debug("No Anchor block found\n");
1353 udf_debug("Using anchor in block %d\n", UDF_SB_ANCHOR(sb)[i]);
1355 for (i=0; i<UDF_SB_NUMPARTS(sb); i++)
1357 switch UDF_SB_PARTTYPE(sb, i)
1359 case UDF_VIRTUAL_MAP15:
1360 case UDF_VIRTUAL_MAP20:
1364 if (!UDF_SB_LASTBLOCK(sb))
1366 UDF_SB_LASTBLOCK(sb) = udf_get_last_block(sb);
1367 udf_find_anchor(sb);
1370 if (!UDF_SB_LASTBLOCK(sb))
1372 udf_debug("Unable to determine Lastblock (For Virtual Partition)\n");
1376 for (j=0; j<UDF_SB_NUMPARTS(sb); j++)
1379 UDF_SB_PARTVSN(sb,i) == UDF_SB_PARTVSN(sb,j) &&
1380 UDF_SB_PARTNUM(sb,i) == UDF_SB_PARTNUM(sb,j))
1382 ino.partitionReferenceNum = j;
1383 ino.logicalBlockNum = UDF_SB_LASTBLOCK(sb) -
1384 UDF_SB_PARTROOT(sb,j);
1389 if (j == UDF_SB_NUMPARTS(sb))
1392 if (!(UDF_SB_VAT(sb) = udf_iget(sb, ino)))
1395 if (UDF_SB_PARTTYPE(sb,i) == UDF_VIRTUAL_MAP15)
1397 UDF_SB_TYPEVIRT(sb,i).s_start_offset = udf_ext0_offset(UDF_SB_VAT(sb));
1398 UDF_SB_TYPEVIRT(sb,i).s_num_entries = (UDF_SB_VAT(sb)->i_size - 36) >> 2;
1400 else if (UDF_SB_PARTTYPE(sb,i) == UDF_VIRTUAL_MAP20)
1402 struct buffer_head *bh = NULL;
1405 pos = udf_block_map(UDF_SB_VAT(sb), 0);
1406 bh = sb_bread(sb, pos);
1407 UDF_SB_TYPEVIRT(sb,i).s_start_offset =
1408 le16_to_cpu(((struct virtualAllocationTable20 *)bh->b_data + udf_ext0_offset(UDF_SB_VAT(sb)))->lengthHeader) +
1409 udf_ext0_offset(UDF_SB_VAT(sb));
1410 UDF_SB_TYPEVIRT(sb,i).s_num_entries = (UDF_SB_VAT(sb)->i_size -
1411 UDF_SB_TYPEVIRT(sb,i).s_start_offset) >> 2;
1412 udf_release_data(bh);
1414 UDF_SB_PARTROOT(sb,i) = udf_get_pblock(sb, 0, i, 0);
1415 UDF_SB_PARTLEN(sb,i) = UDF_SB_PARTLEN(sb,ino.partitionReferenceNum);
1422 static void udf_open_lvid(struct super_block *sb)
1424 if (UDF_SB_LVIDBH(sb))
1427 kernel_timestamp cpu_time;
1429 UDF_SB_LVIDIU(sb)->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1430 UDF_SB_LVIDIU(sb)->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1431 if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
1432 UDF_SB_LVID(sb)->recordingDateAndTime = cpu_to_lets(cpu_time);
1433 UDF_SB_LVID(sb)->integrityType = LVID_INTEGRITY_TYPE_OPEN;
1435 UDF_SB_LVID(sb)->descTag.descCRC =
1436 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb) + sizeof(tag),
1437 le16_to_cpu(UDF_SB_LVID(sb)->descTag.descCRCLength), 0));
1439 UDF_SB_LVID(sb)->descTag.tagChecksum = 0;
1440 for (i=0; i<16; i++)
1442 UDF_SB_LVID(sb)->descTag.tagChecksum +=
1443 ((uint8_t *)&(UDF_SB_LVID(sb)->descTag))[i];
1445 mark_buffer_dirty(UDF_SB_LVIDBH(sb));
1449 static void udf_close_lvid(struct super_block *sb)
1451 if (UDF_SB_LVIDBH(sb) &&
1452 UDF_SB_LVID(sb)->integrityType == LVID_INTEGRITY_TYPE_OPEN)
1455 kernel_timestamp cpu_time;
1457 UDF_SB_LVIDIU(sb)->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1458 UDF_SB_LVIDIU(sb)->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1459 if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
1460 UDF_SB_LVID(sb)->recordingDateAndTime = cpu_to_lets(cpu_time);
1461 if (UDF_MAX_WRITE_VERSION > le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev))
1462 UDF_SB_LVIDIU(sb)->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
1463 if (UDF_SB_UDFREV(sb) > le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFReadRev))
1464 UDF_SB_LVIDIU(sb)->minUDFReadRev = cpu_to_le16(UDF_SB_UDFREV(sb));
1465 if (UDF_SB_UDFREV(sb) > le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev))
1466 UDF_SB_LVIDIU(sb)->minUDFWriteRev = cpu_to_le16(UDF_SB_UDFREV(sb));
1467 UDF_SB_LVID(sb)->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
1469 UDF_SB_LVID(sb)->descTag.descCRC =
1470 cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb) + sizeof(tag),
1471 le16_to_cpu(UDF_SB_LVID(sb)->descTag.descCRCLength), 0));
1473 UDF_SB_LVID(sb)->descTag.tagChecksum = 0;
1474 for (i=0; i<16; i++)
1476 UDF_SB_LVID(sb)->descTag.tagChecksum +=
1477 ((uint8_t *)&(UDF_SB_LVID(sb)->descTag))[i];
1479 mark_buffer_dirty(UDF_SB_LVIDBH(sb));
1487 * Complete the specified super block.
1490 * sb Pointer to superblock to complete - never NULL.
1491 * sb->s_dev Device to read suberblock from.
1492 * options Pointer to mount options.
1493 * silent Silent flag.
1496 * July 1, 1997 - Andrew E. Mileski
1497 * Written, tested, and released.
1499 static int udf_fill_super(struct super_block *sb, void *options, int silent)
1502 struct inode *inode=NULL;
1503 struct udf_options uopt;
1504 kernel_lb_addr rootdir, fileset;
1505 struct udf_sb_info *sbi;
1507 uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT);
1512 sbi = kmalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
1515 sb->s_fs_info = sbi;
1516 memset(UDF_SB(sb), 0x00, sizeof(struct udf_sb_info));
1518 init_MUTEX(&sbi->s_alloc_sem);
1520 if (!udf_parse_options((char *)options, &uopt))
1523 if (uopt.flags & (1 << UDF_FLAG_UTF8) &&
1524 uopt.flags & (1 << UDF_FLAG_NLS_MAP))
1526 udf_error(sb, "udf_read_super",
1527 "utf8 cannot be combined with iocharset\n");
1530 #ifdef CONFIG_UDF_NLS
1531 if ((uopt.flags & (1 << UDF_FLAG_NLS_MAP)) && !uopt.nls_map)
1533 uopt.nls_map = load_nls_default();
1535 uopt.flags &= ~(1 << UDF_FLAG_NLS_MAP);
1537 udf_debug("Using default NLS map\n");
1540 if (!(uopt.flags & (1 << UDF_FLAG_NLS_MAP)))
1541 uopt.flags |= (1 << UDF_FLAG_UTF8);
1543 fileset.logicalBlockNum = 0xFFFFFFFF;
1544 fileset.partitionReferenceNum = 0xFFFF;
1546 UDF_SB(sb)->s_flags = uopt.flags;
1547 UDF_SB(sb)->s_uid = uopt.uid;
1548 UDF_SB(sb)->s_gid = uopt.gid;
1549 UDF_SB(sb)->s_umask = uopt.umask;
1550 UDF_SB(sb)->s_nls_map = uopt.nls_map;
1552 /* Set the block size for all transfers */
1553 if (!udf_set_blocksize(sb, uopt.blocksize))
1556 if ( uopt.session == 0xFFFFFFFF )
1557 UDF_SB_SESSION(sb) = udf_get_last_session(sb);
1559 UDF_SB_SESSION(sb) = uopt.session;
1561 udf_debug("Multi-session=%d\n", UDF_SB_SESSION(sb));
1563 UDF_SB_LASTBLOCK(sb) = uopt.lastblock;
1564 UDF_SB_ANCHOR(sb)[0] = UDF_SB_ANCHOR(sb)[1] = 0;
1565 UDF_SB_ANCHOR(sb)[2] = uopt.anchor;
1566 UDF_SB_ANCHOR(sb)[3] = 256;
1568 if (udf_check_valid(sb, uopt.novrs, silent)) /* read volume recognition sequences */
1570 printk("UDF-fs: No VRS found\n");
1574 udf_find_anchor(sb);
1576 /* Fill in the rest of the superblock */
1577 sb->s_op = &udf_sb_ops;
1580 sb->s_magic = UDF_SUPER_MAGIC;
1581 sb->s_time_gran = 1000;
1583 if (udf_load_partition(sb, &fileset))
1585 printk("UDF-fs: No partition found (1)\n");
1589 udf_debug("Lastblock=%d\n", UDF_SB_LASTBLOCK(sb));
1591 if ( UDF_SB_LVIDBH(sb) )
1593 uint16_t minUDFReadRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFReadRev);
1594 uint16_t minUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev);
1595 /* uint16_t maxUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev); */
1597 if (minUDFReadRev > UDF_MAX_READ_VERSION)
1599 printk("UDF-fs: minUDFReadRev=%x (max is %x)\n",
1600 le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFReadRev),
1601 UDF_MAX_READ_VERSION);
1604 else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION)
1606 sb->s_flags |= MS_RDONLY;
1609 UDF_SB_UDFREV(sb) = minUDFWriteRev;
1611 if (minUDFReadRev >= UDF_VERS_USE_EXTENDED_FE)
1612 UDF_SET_FLAG(sb, UDF_FLAG_USE_EXTENDED_FE);
1613 if (minUDFReadRev >= UDF_VERS_USE_STREAMS)
1614 UDF_SET_FLAG(sb, UDF_FLAG_USE_STREAMS);
1617 if ( !UDF_SB_NUMPARTS(sb) )
1619 printk("UDF-fs: No partition found (2)\n");
1623 if ( udf_find_fileset(sb, &fileset, &rootdir) )
1625 printk("UDF-fs: No fileset found\n");
1631 kernel_timestamp ts;
1632 udf_time_to_stamp(&ts, UDF_SB_RECORDTIME(sb));
1633 udf_info("UDF %s (%s) Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
1634 UDFFS_VERSION, UDFFS_DATE,
1635 UDF_SB_VOLIDENT(sb), ts.year, ts.month, ts.day, ts.hour, ts.minute,
1636 ts.typeAndTimezone);
1638 if (!(sb->s_flags & MS_RDONLY))
1641 /* Assign the root inode */
1642 /* assign inodes by physical block number */
1643 /* perhaps it's not extensible enough, but for now ... */
1644 inode = udf_iget(sb, rootdir);
1647 printk("UDF-fs: Error in udf_iget, block=%d, partition=%d\n",
1648 rootdir.logicalBlockNum, rootdir.partitionReferenceNum);
1652 /* Allocate a dentry for the root inode */
1653 sb->s_root = d_alloc_root(inode);
1656 printk("UDF-fs: Couldn't allocate root dentry\n");
1660 sb->s_maxbytes = MAX_LFS_FILESIZE;
1665 iput(UDF_SB_VAT(sb));
1666 if (UDF_SB_NUMPARTS(sb))
1668 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_TABLE)
1669 iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_table);
1670 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_TABLE)
1671 iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_table);
1672 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_BITMAP)
1673 UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_uspace);
1674 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_BITMAP)
1675 UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_fspace);
1676 if (UDF_SB_PARTTYPE(sb, UDF_SB_PARTITION(sb)) == UDF_SPARABLE_MAP15)
1679 udf_release_data(UDF_SB_TYPESPAR(sb, UDF_SB_PARTITION(sb)).s_spar_map[i]);
1682 #ifdef CONFIG_UDF_NLS
1683 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
1684 unload_nls(UDF_SB(sb)->s_nls_map);
1686 if (!(sb->s_flags & MS_RDONLY))
1688 udf_release_data(UDF_SB_LVIDBH(sb));
1691 sb->s_fs_info = NULL;
1695 void udf_error(struct super_block *sb, const char *function,
1696 const char *fmt, ...)
1700 if (!(sb->s_flags & MS_RDONLY))
1705 va_start(args, fmt);
1706 vsprintf(error_buf, fmt, args);
1708 printk (KERN_CRIT "UDF-fs error (device %s): %s: %s\n",
1709 sb->s_id, function, error_buf);
1712 void udf_warning(struct super_block *sb, const char *function,
1713 const char *fmt, ...)
1717 va_start (args, fmt);
1718 vsprintf(error_buf, fmt, args);
1720 printk(KERN_WARNING "UDF-fs warning (device %s): %s: %s\n",
1721 sb->s_id, function, error_buf);
1728 * Prepare for destruction of the superblock.
1731 * Called before the filesystem is unmounted.
1734 * July 1, 1997 - Andrew E. Mileski
1735 * Written, tested, and released.
1738 udf_put_super(struct super_block *sb)
1743 iput(UDF_SB_VAT(sb));
1744 if (UDF_SB_NUMPARTS(sb))
1746 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_TABLE)
1747 iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_table);
1748 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_TABLE)
1749 iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_table);
1750 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_BITMAP)
1751 UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_uspace);
1752 if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_BITMAP)
1753 UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_fspace);
1754 if (UDF_SB_PARTTYPE(sb, UDF_SB_PARTITION(sb)) == UDF_SPARABLE_MAP15)
1757 udf_release_data(UDF_SB_TYPESPAR(sb, UDF_SB_PARTITION(sb)).s_spar_map[i]);
1760 #ifdef CONFIG_UDF_NLS
1761 if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
1762 unload_nls(UDF_SB(sb)->s_nls_map);
1764 if (!(sb->s_flags & MS_RDONLY))
1766 udf_release_data(UDF_SB_LVIDBH(sb));
1768 kfree(sb->s_fs_info);
1769 sb->s_fs_info = NULL;
1776 * Return info about the filesystem.
1779 * Called by sys_statfs()
1782 * July 1, 1997 - Andrew E. Mileski
1783 * Written, tested, and released.
1786 udf_statfs(struct super_block *sb, struct kstatfs *buf)
1788 buf->f_type = UDF_SUPER_MAGIC;
1789 buf->f_bsize = sb->s_blocksize;
1790 buf->f_blocks = UDF_SB_PARTLEN(sb, UDF_SB_PARTITION(sb));
1791 buf->f_bfree = udf_count_free(sb);
1792 buf->f_bavail = buf->f_bfree;
1793 buf->f_files = (UDF_SB_LVIDBH(sb) ?
1794 (le32_to_cpu(UDF_SB_LVIDIU(sb)->numFiles) +
1795 le32_to_cpu(UDF_SB_LVIDIU(sb)->numDirs)) : 0) + buf->f_bfree;
1796 buf->f_ffree = buf->f_bfree;
1797 /* __kernel_fsid_t f_fsid */
1798 buf->f_namelen = UDF_NAME_LEN-2;
1803 static unsigned char udf_bitmap_lookup[16] = {
1804 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
1808 udf_count_free_bitmap(struct super_block *sb, struct udf_bitmap *bitmap)
1810 struct buffer_head *bh = NULL;
1811 unsigned int accum = 0;
1813 int block = 0, newblock;
1819 struct spaceBitmapDesc *bm;
1823 loc.logicalBlockNum = bitmap->s_extPosition;
1824 loc.partitionReferenceNum = UDF_SB_PARTITION(sb);
1825 bh = udf_read_ptagged(sb, loc, 0, &ident);
1829 printk(KERN_ERR "udf: udf_count_free failed\n");
1832 else if (ident != TAG_IDENT_SBD)
1834 udf_release_data(bh);
1835 printk(KERN_ERR "udf: udf_count_free failed\n");
1839 bm = (struct spaceBitmapDesc *)bh->b_data;
1840 bytes = le32_to_cpu(bm->numOfBytes);
1841 index = sizeof(struct spaceBitmapDesc); /* offset in first block only */
1842 ptr = (uint8_t *)bh->b_data;
1846 while ((bytes > 0) && (index < sb->s_blocksize))
1849 accum += udf_bitmap_lookup[ value & 0x0f ];
1850 accum += udf_bitmap_lookup[ value >> 4 ];
1856 udf_release_data(bh);
1857 newblock = udf_get_lb_pblock(sb, loc, ++block);
1858 bh = udf_tread(sb, newblock);
1861 udf_debug("read failed\n");
1865 ptr = (uint8_t *)bh->b_data;
1868 udf_release_data(bh);
1877 udf_count_free_table(struct super_block *sb, struct inode * table)
1879 unsigned int accum = 0;
1880 uint32_t extoffset, elen;
1881 kernel_lb_addr bloc, eloc;
1883 struct buffer_head *bh = NULL;
1887 bloc = UDF_I_LOCATION(table);
1888 extoffset = sizeof(struct unallocSpaceEntry);
1890 while ((etype = udf_next_aext(table, &bloc, &extoffset, &eloc, &elen, &bh, 1)) != -1)
1892 accum += (elen >> table->i_sb->s_blocksize_bits);
1894 udf_release_data(bh);
1902 udf_count_free(struct super_block *sb)
1904 unsigned int accum = 0;
1906 if (UDF_SB_LVIDBH(sb))
1908 if (le32_to_cpu(UDF_SB_LVID(sb)->numOfPartitions) > UDF_SB_PARTITION(sb))
1910 accum = le32_to_cpu(UDF_SB_LVID(sb)->freeSpaceTable[UDF_SB_PARTITION(sb)]);
1912 if (accum == 0xFFFFFFFF)
1920 if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_BITMAP)
1922 accum += udf_count_free_bitmap(sb,
1923 UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_bitmap);
1925 if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_BITMAP)
1927 accum += udf_count_free_bitmap(sb,
1928 UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_bitmap);
1933 if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_TABLE)
1935 accum += udf_count_free_table(sb,
1936 UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_table);
1938 if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_TABLE)
1940 accum += udf_count_free_table(sb,
1941 UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_table);