diff options
Diffstat (limited to 'fs/udf/super.c')
| -rw-r--r-- | fs/udf/super.c | 722 |
1 files changed, 442 insertions, 280 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c index c09a84daaf5..3286db047a4 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -56,6 +56,7 @@ #include <linux/seq_file.h> #include <linux/bitmap.h> #include <linux/crc-itu-t.h> +#include <linux/log2.h> #include <asm/byteorder.h> #include "udf_sb.h" @@ -75,6 +76,11 @@ #define UDF_DEFAULT_BLOCKSIZE 2048 +#define VSD_FIRST_SECTOR_OFFSET 32768 +#define VSD_MAX_SECTOR_OFFSET 0x800000 + +enum { UDF_MAX_LINKS = 0xffff }; + /* These are the "meat" - everything else is stuffing */ static int udf_fill_super(struct super_block *, void *, int); static void udf_put_super(struct super_block *); @@ -91,13 +97,25 @@ static unsigned int udf_count_free(struct super_block *); static int udf_statfs(struct dentry *, struct kstatfs *); static int udf_show_options(struct seq_file *, struct dentry *); -struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi) +struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb) { - struct logicalVolIntegrityDesc *lvid = - (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data; - __u32 number_of_partitions = le32_to_cpu(lvid->numOfPartitions); - __u32 offset = number_of_partitions * 2 * - sizeof(uint32_t)/sizeof(uint8_t); + struct logicalVolIntegrityDesc *lvid; + unsigned int partnum; + unsigned int offset; + + if (!UDF_SB(sb)->s_lvid_bh) + return NULL; + lvid = (struct logicalVolIntegrityDesc *)UDF_SB(sb)->s_lvid_bh->b_data; + partnum = le32_to_cpu(lvid->numOfPartitions); + if ((sb->s_blocksize - sizeof(struct logicalVolIntegrityDescImpUse) - + offsetof(struct logicalVolIntegrityDesc, impUse)) / + (2 * sizeof(uint32_t)) < partnum) { + udf_err(sb, "Logical volume integrity descriptor corrupted " + "(numOfPartitions = %u)!\n", partnum); + return NULL; + } + /* The offset is to skip freeSpaceTable and sizeTable arrays */ + offset = partnum * 2 * sizeof(uint32_t); return (struct logicalVolIntegrityDescImpUse *)&(lvid->impUse[offset]); } @@ -115,6 +133,7 @@ static struct file_system_type udf_fstype = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("udf"); static struct kmem_cache *udf_inode_cachep; @@ -131,6 +150,8 @@ static struct inode *udf_alloc_inode(struct super_block *sb) ei->i_next_alloc_goal = 0; ei->i_strat4096 = 0; init_rwsem(&ei->i_data_sem); + ei->cached_extent.lstart = -1; + spin_lock_init(&ei->i_extent_cache_lock); return &ei->vfs_inode; } @@ -154,7 +175,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { udf_inode_cachep = kmem_cache_create("udf_inode_cache", sizeof(struct udf_inode_info), @@ -168,6 +189,11 @@ static int init_inodecache(void) static void destroy_inodecache(void) { + /* + * Make sure all delayed rcu free inodes are flushed before we + * destroy cache. + */ + rcu_barrier(); kmem_cache_destroy(udf_inode_cachep); } @@ -196,8 +222,8 @@ struct udf_options { unsigned int rootdir; unsigned int flags; umode_t umask; - gid_t gid; - uid_t uid; + kgid_t gid; + kuid_t uid; umode_t fmode; umode_t dmode; struct nls_table *nls_map; @@ -249,6 +275,64 @@ static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count) return 0; } +static void udf_sb_free_bitmap(struct udf_bitmap *bitmap) +{ + int i; + int nr_groups = bitmap->s_nr_groups; + int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * + nr_groups); + + for (i = 0; i < nr_groups; i++) + if (bitmap->s_block_bitmap[i]) + brelse(bitmap->s_block_bitmap[i]); + + if (size <= PAGE_SIZE) + kfree(bitmap); + else + vfree(bitmap); +} + +static void udf_free_partition(struct udf_part_map *map) +{ + int i; + struct udf_meta_data *mdata; + + if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) + iput(map->s_uspace.s_table); + if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) + iput(map->s_fspace.s_table); + if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) + udf_sb_free_bitmap(map->s_uspace.s_bitmap); + if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) + udf_sb_free_bitmap(map->s_fspace.s_bitmap); + if (map->s_partition_type == UDF_SPARABLE_MAP15) + for (i = 0; i < 4; i++) + brelse(map->s_type_specific.s_sparing.s_spar_map[i]); + else if (map->s_partition_type == UDF_METADATA_MAP25) { + mdata = &map->s_type_specific.s_metadata; + iput(mdata->s_metadata_fe); + mdata->s_metadata_fe = NULL; + + iput(mdata->s_mirror_fe); + mdata->s_mirror_fe = NULL; + + iput(mdata->s_bitmap_fe); + mdata->s_bitmap_fe = NULL; + } +} + +static void udf_sb_free_partitions(struct super_block *sb) +{ + struct udf_sb_info *sbi = UDF_SB(sb); + int i; + if (sbi->s_partmaps == NULL) + return; + for (i = 0; i < sbi->s_partitions; i++) + udf_free_partition(&sbi->s_partmaps[i]); + kfree(sbi->s_partmaps); + sbi->s_partmaps = NULL; +} + static int udf_show_options(struct seq_file *seq, struct dentry *root) { struct super_block *sb = root->d_sb; @@ -275,9 +359,9 @@ static int udf_show_options(struct seq_file *seq, struct dentry *root) if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_IGNORE)) seq_puts(seq, ",gid=ignore"); if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET)) - seq_printf(seq, ",uid=%u", sbi->s_uid); + seq_printf(seq, ",uid=%u", from_kuid(&init_user_ns, sbi->s_uid)); if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET)) - seq_printf(seq, ",gid=%u", sbi->s_gid); + seq_printf(seq, ",gid=%u", from_kgid(&init_user_ns, sbi->s_gid)); if (sbi->s_umask != 0) seq_printf(seq, ",umask=%ho", sbi->s_umask); if (sbi->s_fmode != UDF_INVALID_MODE) @@ -421,6 +505,7 @@ static int udf_parse_options(char *options, struct udf_options *uopt, while ((p = strsep(&options, ",")) != NULL) { substring_t args[MAX_OPT_ARGS]; int token; + unsigned n; if (!*p) continue; @@ -432,7 +517,10 @@ static int udf_parse_options(char *options, struct udf_options *uopt, case Opt_bs: if (match_int(&args[0], &option)) return 0; - uopt->blocksize = option; + n = option; + if (n != 512 && n != 1024 && n != 2048 && n != 4096) + return 0; + uopt->blocksize = n; uopt->flags |= (1 << UDF_FLAG_BLOCKSIZE_SET); break; case Opt_unhide: @@ -456,13 +544,17 @@ static int udf_parse_options(char *options, struct udf_options *uopt, case Opt_gid: if (match_int(args, &option)) return 0; - uopt->gid = option; + uopt->gid = make_kgid(current_user_ns(), option); + if (!gid_valid(uopt->gid)) + return 0; uopt->flags |= (1 << UDF_FLAG_GID_SET); break; case Opt_uid: if (match_int(args, &option)) return 0; - uopt->uid = option; + uopt->uid = make_kuid(current_user_ns(), option); + if (!uid_valid(uopt->uid)) + return 0; uopt->flags |= (1 << UDF_FLAG_UID_SET); break; case Opt_umask: @@ -556,6 +648,14 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options) struct udf_options uopt; struct udf_sb_info *sbi = UDF_SB(sb); int error = 0; + struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb); + + sync_filesystem(sb); + if (lvidiu) { + int write_rev = le16_to_cpu(lvidiu->minUDFWriteRev); + if (write_rev > UDF_MAX_WRITE_VERSION && !(*flags & MS_RDONLY)) + return -EACCES; + } uopt.flags = sbi->s_flags; uopt.uid = sbi->s_uid; @@ -576,12 +676,6 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options) sbi->s_dmode = uopt.dmode; write_unlock(&sbi->s_cred_lock); - if (sbi->s_lvid_bh) { - int write_rev = le16_to_cpu(udf_sb_lvidiu(sbi)->minUDFWriteRev); - if (write_rev > UDF_MAX_WRITE_VERSION) - *flags |= MS_RDONLY; - } - if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) goto out_unlock; @@ -599,7 +693,7 @@ out_unlock: static loff_t udf_check_vsd(struct super_block *sb) { struct volStructDesc *vsd = NULL; - loff_t sector = 32768; + loff_t sector = VSD_FIRST_SECTOR_OFFSET; int sectorsize; struct buffer_head *bh = NULL; int nsr02 = 0; @@ -617,8 +711,18 @@ static loff_t udf_check_vsd(struct super_block *sb) udf_debug("Starting at sector %u (%ld byte sectors)\n", (unsigned int)(sector >> sb->s_blocksize_bits), sb->s_blocksize); - /* Process the sequence (if applicable) */ - for (; !nsr02 && !nsr03; sector += sectorsize) { + /* Process the sequence (if applicable). The hard limit on the sector + * offset is arbitrary, hopefully large enough so that all valid UDF + * filesystems will be recognised. There is no mention of an upper + * bound to the size of the volume recognition area in the standard. + * The limit will prevent the code to read all the sectors of a + * specially crafted image (like a bluray disc full of CD001 sectors), + * potentially causing minutes or even hours of uninterruptible I/O + * activity. This actually happened with uninitialised SSD partitions + * (all 0xFF) before the check for the limit and all valid IDs were + * added */ + for (; !nsr02 && !nsr03 && sector < VSD_MAX_SECTOR_OFFSET; + sector += sectorsize) { /* Read a block */ bh = udf_tread(sb, sector >> sb->s_blocksize_bits); if (!bh) @@ -628,10 +732,7 @@ static loff_t udf_check_vsd(struct super_block *sb) vsd = (struct volStructDesc *)(bh->b_data + (sector & (sb->s_blocksize - 1))); - if (vsd->stdIdent[0] == 0) { - brelse(bh); - break; - } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001, + if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001, VSD_STD_ID_LEN)) { switch (vsd->structType) { case 0: @@ -667,6 +768,17 @@ static loff_t udf_check_vsd(struct super_block *sb) else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR03, VSD_STD_ID_LEN)) nsr03 = sector; + else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BOOT2, + VSD_STD_ID_LEN)) + ; /* nothing */ + else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CDW02, + VSD_STD_ID_LEN)) + ; /* nothing */ + else { + /* invalid id : end of volume recognition area */ + brelse(bh); + break; + } brelse(bh); } @@ -674,7 +786,8 @@ static loff_t udf_check_vsd(struct super_block *sb) return nsr03; else if (nsr02) return nsr02; - else if (sector - (sbi->s_session << sb->s_blocksize_bits) == 32768) + else if (!bh && sector - (sbi->s_session << sb->s_blocksize_bits) == + VSD_FIRST_SECTOR_OFFSET) return -1; else return 0; @@ -770,27 +883,38 @@ static int udf_find_fileset(struct super_block *sb, return 1; } +/* + * Load primary Volume Descriptor Sequence + * + * Return <0 on error, 0 on success. -EAGAIN is special meaning next sequence + * should be tried. + */ static int udf_load_pvoldesc(struct super_block *sb, sector_t block) { struct primaryVolDesc *pvoldesc; struct ustr *instr, *outstr; struct buffer_head *bh; uint16_t ident; - int ret = 1; + int ret = -ENOMEM; instr = kmalloc(sizeof(struct ustr), GFP_NOFS); if (!instr) - return 1; + return -ENOMEM; outstr = kmalloc(sizeof(struct ustr), GFP_NOFS); if (!outstr) goto out1; bh = udf_read_tagged(sb, block, block, &ident); - if (!bh) + if (!bh) { + ret = -EAGAIN; goto out2; + } - BUG_ON(ident != TAG_IDENT_PVD); + if (ident != TAG_IDENT_PVD) { + ret = -EIO; + goto out_bh; + } pvoldesc = (struct primaryVolDesc *)bh->b_data; @@ -816,8 +940,9 @@ static int udf_load_pvoldesc(struct super_block *sb, sector_t block) if (udf_CS0toUTF8(outstr, instr)) udf_debug("volSetIdent[] = '%s'\n", outstr->u_name); - brelse(bh); ret = 0; +out_bh: + brelse(bh); out2: kfree(outstr); out1: @@ -874,7 +999,7 @@ static int udf_load_metadata_files(struct super_block *sb, int partition) if (mdata->s_mirror_fe == NULL) { udf_err(sb, "Both metadata and mirror metadata inode efe can not found\n"); - goto error_exit; + return -EIO; } } @@ -891,23 +1016,18 @@ static int udf_load_metadata_files(struct super_block *sb, int partition) addr.logicalBlockNum, addr.partitionReferenceNum); mdata->s_bitmap_fe = udf_iget(sb, &addr); - if (mdata->s_bitmap_fe == NULL) { if (sb->s_flags & MS_RDONLY) udf_warn(sb, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n"); else { udf_err(sb, "bitmap inode efe not found and attempted read-write mount\n"); - goto error_exit; + return -EIO; } } } udf_debug("udf_load_metadata_files Ok\n"); - return 0; - -error_exit: - return 1; } static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh, @@ -948,13 +1068,9 @@ static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index) else bitmap = vzalloc(size); /* TODO: get rid of vzalloc */ - if (bitmap == NULL) { - udf_err(sb, "Unable to allocate space for bitmap and %d buffer_head pointers\n", - nr_groups); + if (bitmap == NULL) return NULL; - } - bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1); bitmap->s_nr_groups = nr_groups; return bitmap; } @@ -1000,7 +1116,7 @@ static int udf_fill_partdesc_info(struct super_block *sb, if (!map->s_uspace.s_table) { udf_debug("cannot load unallocSpaceTable (part %d)\n", p_index); - return 1; + return -EIO; } map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_TABLE; udf_debug("unallocSpaceTable (part %d) @ %ld\n", @@ -1010,10 +1126,8 @@ static int udf_fill_partdesc_info(struct super_block *sb, if (phd->unallocSpaceBitmap.extLength) { struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index); if (!bitmap) - return 1; + return -ENOMEM; map->s_uspace.s_bitmap = bitmap; - bitmap->s_extLength = le32_to_cpu( - phd->unallocSpaceBitmap.extLength); bitmap->s_extPosition = le32_to_cpu( phd->unallocSpaceBitmap.extPosition); map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP; @@ -1035,7 +1149,7 @@ static int udf_fill_partdesc_info(struct super_block *sb, if (!map->s_fspace.s_table) { udf_debug("cannot load freedSpaceTable (part %d)\n", p_index); - return 1; + return -EIO; } map->s_partition_flags |= UDF_PART_FLAG_FREED_TABLE; @@ -1046,10 +1160,8 @@ static int udf_fill_partdesc_info(struct super_block *sb, if (phd->freedSpaceBitmap.extLength) { struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index); if (!bitmap) - return 1; + return -ENOMEM; map->s_fspace.s_bitmap = bitmap; - bitmap->s_extLength = le32_to_cpu( - phd->freedSpaceBitmap.extLength); bitmap->s_extPosition = le32_to_cpu( phd->freedSpaceBitmap.extPosition); map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP; @@ -1100,7 +1212,7 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index) udf_find_vat_block(sb, p_index, type1_index, blocks - 1); } if (!sbi->s_vat_inode) - return 1; + return -EIO; if (map->s_partition_type == UDF_VIRTUAL_MAP15) { map->s_type_specific.s_virtual.s_start_offset = 0; @@ -1112,7 +1224,7 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index) pos = udf_block_map(sbi->s_vat_inode, 0); bh = sb_bread(sb, pos); if (!bh) - return 1; + return -EIO; vat20 = (struct virtualAllocationTable20 *)bh->b_data; } else { vat20 = (struct virtualAllocationTable20 *) @@ -1130,6 +1242,12 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index) return 0; } +/* + * Load partition descriptor block + * + * Returns <0 on error, 0 on success, -EAGAIN is special - try next descriptor + * sequence. + */ static int udf_load_partdesc(struct super_block *sb, sector_t block) { struct buffer_head *bh; @@ -1139,13 +1257,15 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block) int i, type1_idx; uint16_t partitionNumber; uint16_t ident; - int ret = 0; + int ret; bh = udf_read_tagged(sb, block, block, &ident); if (!bh) - return 1; - if (ident != TAG_IDENT_PD) + return -EAGAIN; + if (ident != TAG_IDENT_PD) { + ret = 0; goto out_bh; + } p = (struct partitionDesc *)bh->b_data; partitionNumber = le16_to_cpu(p->partitionNumber); @@ -1164,16 +1284,22 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block) if (i >= sbi->s_partitions) { udf_debug("Partition (%d) not found in partition map\n", partitionNumber); + ret = 0; goto out_bh; } ret = udf_fill_partdesc_info(sb, p, i); + if (ret < 0) + goto out_bh; /* * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and * PHYSICAL partitions are already set up */ type1_idx = i; +#ifdef UDFFS_DEBUG + map = NULL; /* supress 'maybe used uninitialized' warning */ +#endif for (i = 0; i < sbi->s_partitions; i++) { map = &sbi->s_partmaps[i]; @@ -1184,64 +1310,124 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block) break; } - if (i >= sbi->s_partitions) + if (i >= sbi->s_partitions) { + ret = 0; goto out_bh; + } ret = udf_fill_partdesc_info(sb, p, i); - if (ret) + if (ret < 0) goto out_bh; if (map->s_partition_type == UDF_METADATA_MAP25) { ret = udf_load_metadata_files(sb, i); - if (ret) { + if (ret < 0) { udf_err(sb, "error loading MetaData partition map %d\n", i); goto out_bh; } } else { - ret = udf_load_vat(sb, i, type1_idx); - if (ret) - goto out_bh; /* - * Mark filesystem read-only if we have a partition with - * virtual map since we don't handle writing to it (we - * overwrite blocks instead of relocating them). + * If we have a partition with virtual map, we don't handle + * writing to it (we overwrite blocks instead of relocating + * them). */ - sb->s_flags |= MS_RDONLY; - pr_notice("Filesystem marked read-only because writing to pseudooverwrite partition is not implemented\n"); + if (!(sb->s_flags & MS_RDONLY)) { + ret = -EACCES; + goto out_bh; + } + ret = udf_load_vat(sb, i, type1_idx); + if (ret < 0) + goto out_bh; } + ret = 0; out_bh: /* In case loading failed, we handle cleanup in udf_fill_super */ brelse(bh); return ret; } +static int udf_load_sparable_map(struct super_block *sb, + struct udf_part_map *map, + struct sparablePartitionMap *spm) +{ + uint32_t loc; + uint16_t ident; + struct sparingTable *st; + struct udf_sparing_data *sdata = &map->s_type_specific.s_sparing; + int i; + struct buffer_head *bh; + + map->s_partition_type = UDF_SPARABLE_MAP15; + sdata->s_packet_len = le16_to_cpu(spm->packetLength); + if (!is_power_of_2(sdata->s_packet_len)) { + udf_err(sb, "error loading logical volume descriptor: " + "Invalid packet length %u\n", + (unsigned)sdata->s_packet_len); + return -EIO; + } + if (spm->numSparingTables > 4) { + udf_err(sb, "error loading logical volume descriptor: " + "Too many sparing tables (%d)\n", + (int)spm->numSparingTables); + return -EIO; + } + + for (i = 0; i < spm->numSparingTables; i++) { + loc = le32_to_cpu(spm->locSparingTable[i]); + bh = udf_read_tagged(sb, loc, loc, &ident); + if (!bh) + continue; + + st = (struct sparingTable *)bh->b_data; + if (ident != 0 || + strncmp(st->sparingIdent.ident, UDF_ID_SPARING, + strlen(UDF_ID_SPARING)) || + sizeof(*st) + le16_to_cpu(st->reallocationTableLen) > + sb->s_blocksize) { + brelse(bh); + continue; + } + + sdata->s_spar_map[i] = bh; + } + map->s_partition_func = udf_get_pblock_spar15; + return 0; +} + static int udf_load_logicalvol(struct super_block *sb, sector_t block, struct kernel_lb_addr *fileset) { struct logicalVolDesc *lvd; - int i, j, offset; + int i, offset; uint8_t type; struct udf_sb_info *sbi = UDF_SB(sb); struct genericPartitionMap *gpm; uint16_t ident; struct buffer_head *bh; - int ret = 0; + unsigned int table_len; + int ret; bh = udf_read_tagged(sb, block, block, &ident); if (!bh) - return 1; + return -EAGAIN; BUG_ON(ident != TAG_IDENT_LVD); lvd = (struct logicalVolDesc *)bh->b_data; - - i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps)); - if (i != 0) { - ret = i; + table_len = le32_to_cpu(lvd->mapTableLength); + if (table_len > sb->s_blocksize - sizeof(*lvd)) { + udf_err(sb, "error loading logical volume descriptor: " + "Partition table too long (%u > %lu)\n", table_len, + sb->s_blocksize - sizeof(*lvd)); + ret = -EIO; goto out_bh; } + ret = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps)); + if (ret) + goto out_bh; + for (i = 0, offset = 0; - i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength); + i < sbi->s_partitions && offset < table_len; i++, offset += gpm->partitionMapLength) { struct udf_part_map *map = &sbi->s_partmaps[i]; gpm = (struct genericPartitionMap *) @@ -1276,38 +1462,10 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block, } else if (!strncmp(upm2->partIdent.ident, UDF_ID_SPARABLE, strlen(UDF_ID_SPARABLE))) { - uint32_t loc; - struct sparingTable *st; - struct sparablePartitionMap *spm = - (struct sparablePartitionMap *)gpm; - - map->s_partition_type = UDF_SPARABLE_MAP15; - map->s_type_specific.s_sparing.s_packet_len = - le16_to_cpu(spm->packetLength); - for (j = 0; j < spm->numSparingTables; j++) { - struct buffer_head *bh2; - - loc = le32_to_cpu( - spm->locSparingTable[j]); - bh2 = udf_read_tagged(sb, loc, loc, - &ident); - map->s_type_specific.s_sparing. - s_spar_map[j] = bh2; - - if (bh2 == NULL) - continue; - - st = (struct sparingTable *)bh2->b_data; - if (ident != 0 || strncmp( - st->sparingIdent.ident, - UDF_ID_SPARING, - strlen(UDF_ID_SPARING))) { - brelse(bh2); - map->s_type_specific.s_sparing. - s_spar_map[j] = NULL; - } - } - map->s_partition_func = udf_get_pblock_spar15; + ret = udf_load_sparable_map(sb, map, + (struct sparablePartitionMap *)gpm); + if (ret < 0) + goto out_bh; } else if (!strncmp(upm2->partIdent.ident, UDF_ID_METADATA, strlen(UDF_ID_METADATA))) { @@ -1372,7 +1530,7 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block, } if (lvd->integritySeqExt.extLength) udf_load_logicalvolint(sb, leea_to_cpu(lvd->integritySeqExt)); - + ret = 0; out_bh: brelse(bh); return ret; @@ -1410,22 +1568,18 @@ static void udf_load_logicalvolint(struct super_block *sb, struct kernel_extent_ } /* - * udf_process_sequence + * Process a main/reserve volume descriptor sequence. + * @block First block of first extent of the sequence. + * @lastblock Lastblock of first extent of the sequence. + * @fileset There we store extent containing root fileset * - * PURPOSE - * Process a main/reserve volume descriptor sequence. - * - * PRE-CONDITIONS - * sb Pointer to _locked_ superblock. - * block First block of first extent of the sequence. - * lastblock Lastblock of first extent of the sequence. - * - * HISTORY - * July 1, 1997 - Andrew E. Mileski - * Written, tested, and released. + * Returns <0 on error, 0 on success. -EAGAIN is special - try next descriptor + * sequence */ -static noinline int udf_process_sequence(struct super_block *sb, long block, - long lastblock, struct kernel_lb_addr *fileset) +static noinline int udf_process_sequence( + struct super_block *sb, + sector_t block, sector_t lastblock, + struct kernel_lb_addr *fileset) { struct buffer_head *bh = NULL; struct udf_vds_record vds[VDS_POS_LENGTH]; @@ -1436,6 +1590,7 @@ static noinline int udf_process_sequence(struct super_block *sb, long block, uint32_t vdsn; uint16_t ident; long next_s = 0, next_e = 0; + int ret; memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH); @@ -1450,7 +1605,7 @@ static noinline int udf_process_sequence(struct super_block *sb, long block, udf_err(sb, "Block %llu of volume descriptor sequence is corrupted or we could not read it\n", (unsigned long long)block); - return 1; + return -EAGAIN; } /* Process each descriptor (ISO 13346 3/8.3-8.4) */ @@ -1523,14 +1678,19 @@ static noinline int udf_process_sequence(struct super_block *sb, long block, */ if (!vds[VDS_POS_PRIMARY_VOL_DESC].block) { udf_err(sb, "Primary Volume Descriptor not found!\n"); - return 1; + return -EAGAIN; + } + ret = udf_load_pvoldesc(sb, vds[VDS_POS_PRIMARY_VOL_DESC].block); + if (ret < 0) + return ret; + + if (vds[VDS_POS_LOGICAL_VOL_DESC].block) { + ret = udf_load_logicalvol(sb, + vds[VDS_POS_LOGICAL_VOL_DESC].block, + fileset); + if (ret < 0) + return ret; } - if (udf_load_pvoldesc(sb, vds[VDS_POS_PRIMARY_VOL_DESC].block)) - return 1; - - if (vds[VDS_POS_LOGICAL_VOL_DESC].block && udf_load_logicalvol(sb, - vds[VDS_POS_LOGICAL_VOL_DESC].block, fileset)) - return 1; if (vds[VDS_POS_PARTITION_DESC].block) { /* @@ -1539,19 +1699,27 @@ static noinline int udf_process_sequence(struct super_block *sb, long block, */ for (block = vds[VDS_POS_PARTITION_DESC].block; block < vds[VDS_POS_TERMINATING_DESC].block; - block++) - if (udf_load_partdesc(sb, block)) - return 1; + block++) { + ret = udf_load_partdesc(sb, block); + if (ret < 0) + return ret; + } } return 0; } +/* + * Load Volume Descriptor Sequence described by anchor in bh + * + * Returns <0 on error, 0 on success + */ static int udf_load_sequence(struct super_block *sb, struct buffer_head *bh, struct kernel_lb_addr *fileset) { struct anchorVolDescPtr *anchor; - long main_s, main_e, reserve_s, reserve_e; + sector_t main_s, main_e, reserve_s, reserve_e; + int ret; anchor = (struct anchorVolDescPtr *)bh->b_data; @@ -1569,14 +1737,26 @@ static int udf_load_sequence(struct super_block *sb, struct buffer_head *bh, /* Process the main & reserve sequences */ /* responsible for finding the PartitionDesc(s) */ - if (!udf_process_sequence(sb, main_s, main_e, fileset)) - return 1; - return !udf_process_sequence(sb, reserve_s, reserve_e, fileset); + ret = udf_process_sequence(sb, main_s, main_e, fileset); + if (ret != -EAGAIN) + return ret; + udf_sb_free_partitions(sb); + ret = udf_process_sequence(sb, reserve_s, reserve_e, fileset); + if (ret < 0) { + udf_sb_free_partitions(sb); + /* No sequence was OK, return -EIO */ + if (ret == -EAGAIN) + ret = -EIO; + } + return ret; } /* * Check whether there is an anchor block in the given block and * load Volume Descriptor Sequence if so. + * + * Returns <0 on error, 0 on success, -EAGAIN is special - try next anchor + * block */ static int udf_check_anchor_block(struct super_block *sb, sector_t block, struct kernel_lb_addr *fileset) @@ -1588,33 +1768,40 @@ static int udf_check_anchor_block(struct super_block *sb, sector_t block, if (UDF_QUERY_FLAG(sb, UDF_FLAG_VARCONV) && udf_fixed_to_variable(block) >= sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits) - return 0; + return -EAGAIN; bh = udf_read_tagged(sb, block, block, &ident); if (!bh) - return 0; + return -EAGAIN; if (ident != TAG_IDENT_AVDP) { brelse(bh); - return 0; + return -EAGAIN; } ret = udf_load_sequence(sb, bh, fileset); brelse(bh); return ret; } -/* Search for an anchor volume descriptor pointer */ -static sector_t udf_scan_anchors(struct super_block *sb, sector_t lastblock, - struct kernel_lb_addr *fileset) +/* + * Search for an anchor volume descriptor pointer. + * + * Returns < 0 on error, 0 on success. -EAGAIN is special - try next set + * of anchors. + */ +static int udf_scan_anchors(struct super_block *sb, sector_t *lastblock, + struct kernel_lb_addr *fileset) { sector_t last[6]; int i; struct udf_sb_info *sbi = UDF_SB(sb); int last_count = 0; + int ret; /* First try user provided anchor */ if (sbi->s_anchor) { - if (udf_check_anchor_block(sb, sbi->s_anchor, fileset)) - return lastblock; + ret = udf_check_anchor_block(sb, sbi->s_anchor, fileset); + if (ret != -EAGAIN) + return ret; } /* * according to spec, anchor is in either: @@ -1623,39 +1810,46 @@ static sector_t udf_scan_anchors(struct super_block *sb, sector_t lastblock, * lastblock * however, if the disc isn't closed, it could be 512. */ - if (udf_check_anchor_block(sb, sbi->s_session + 256, fileset)) - return lastblock; + ret = udf_check_anchor_block(sb, sbi->s_session + 256, fileset); + if (ret != -EAGAIN) + return ret; /* * The trouble is which block is the last one. Drives often misreport * this so we try various possibilities. */ - last[last_count++] = lastblock; - if (lastblock >= 1) - last[last_count++] = lastblock - 1; - last[last_count++] = lastblock + 1; - if (lastblock >= 2) - last[last_count++] = lastblock - 2; - if (lastblock >= 150) - last[last_count++] = lastblock - 150; - if (lastblock >= 152) - last[last_count++] = lastblock - 152; + last[last_count++] = *lastblock; + if (*lastblock >= 1) + last[last_count++] = *lastblock - 1; + last[last_count++] = *lastblock + 1; + if (*lastblock >= 2) + last[last_count++] = *lastblock - 2; + if (*lastblock >= 150) + last[last_count++] = *lastblock - 150; + if (*lastblock >= 152) + last[last_count++] = *lastblock - 152; for (i = 0; i < last_count; i++) { if (last[i] >= sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits) continue; - if (udf_check_anchor_block(sb, last[i], fileset)) - return last[i]; + ret = udf_check_anchor_block(sb, last[i], fileset); + if (ret != -EAGAIN) { + if (!ret) + *lastblock = last[i]; + return ret; + } if (last[i] < 256) continue; - if (udf_check_anchor_block(sb, last[i] - 256, fileset)) - return last[i]; + ret = udf_check_anchor_block(sb, last[i] - 256, fileset); + if (ret != -EAGAIN) { + if (!ret) + *lastblock = last[i]; + return ret; + } } /* Finally try block 512 in case media is open */ - if (udf_check_anchor_block(sb, sbi->s_session + 512, fileset)) - return last[0]; - return 0; + return udf_check_anchor_block(sb, sbi->s_session + 512, fileset); } /* @@ -1663,54 +1857,59 @@ static sector_t udf_scan_anchors(struct super_block *sb, sector_t lastblock, * area specified by it. The function expects sbi->s_lastblock to be the last * block on the media. * - * Return 1 if ok, 0 if not found. - * + * Return <0 on error, 0 if anchor found. -EAGAIN is special meaning anchor + * was not found. */ static int udf_find_anchor(struct super_block *sb, struct kernel_lb_addr *fileset) { - sector_t lastblock; struct udf_sb_info *sbi = UDF_SB(sb); + sector_t lastblock = sbi->s_last_block; + int ret; - lastblock = udf_scan_anchors(sb, sbi->s_last_block, fileset); - if (lastblock) + ret = udf_scan_anchors(sb, &lastblock, fileset); + if (ret != -EAGAIN) goto out; /* No anchor found? Try VARCONV conversion of block numbers */ UDF_SET_FLAG(sb, UDF_FLAG_VARCONV); + lastblock = udf_variable_to_fixed(sbi->s_last_block); /* Firstly, we try to not convert number of the last block */ - lastblock = udf_scan_anchors(sb, - udf_variable_to_fixed(sbi->s_last_block), - fileset); - if (lastblock) + ret = udf_scan_anchors(sb, &lastblock, fileset); + if (ret != -EAGAIN) goto out; + lastblock = sbi->s_last_block; /* Secondly, we try with converted number of the last block */ - lastblock = udf_scan_anchors(sb, sbi->s_last_block, fileset); - if (!lastblock) { + ret = udf_scan_anchors(sb, &lastblock, fileset); + if (ret < 0) { /* VARCONV didn't help. Clear it. */ UDF_CLEAR_FLAG(sb, UDF_FLAG_VARCONV); - return 0; } out: - sbi->s_last_block = lastblock; - return 1; + if (ret == 0) + sbi->s_last_block = lastblock; + return ret; } /* * Check Volume Structure Descriptor, find Anchor block and load Volume - * Descriptor Sequence + * Descriptor Sequence. + * + * Returns < 0 on error, 0 on success. -EAGAIN is special meaning anchor + * block was not found. */ static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt, int silent, struct kernel_lb_addr *fileset) { struct udf_sb_info *sbi = UDF_SB(sb); loff_t nsr_off; + int ret; if (!sb_set_blocksize(sb, uopt->blocksize)) { if (!silent) udf_warn(sb, "Bad block size\n"); - return 0; + return -EINVAL; } sbi->s_last_block = uopt->lastblock; if (!uopt->novrs) { @@ -1722,7 +1921,9 @@ static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt, return 0; } if (nsr_off == -1) - udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n"); + udf_debug("Failed to read sector at offset %d. " + "Assuming open disc. Skipping validity " + "check\n", VSD_FIRST_SECTOR_OFFSET); if (!sbi->s_last_block) sbi->s_last_block = udf_get_last_block(sb); } else { @@ -1731,12 +1932,13 @@ static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt, /* Look for anchor block and load Volume Descriptor Sequence */ sbi->s_anchor = uopt->anchor; - if (!udf_find_anchor(sb, fileset)) { - if (!silent) + ret = udf_find_anchor(sb, fileset); + if (ret < 0) { + if (!silent && ret == -EAGAIN) udf_warn(sb, "No anchor found\n"); - return 0; + return ret; } - return 1; + return 0; } static void udf_open_lvid(struct super_block *sb) @@ -1748,11 +1950,12 @@ static void udf_open_lvid(struct super_block *sb) if (!bh) return; - - mutex_lock(&sbi->s_alloc_mutex); lvid = (struct logicalVolIntegrityDesc *)bh->b_data; - lvidiu = udf_sb_lvidiu(sbi); + lvidiu = udf_sb_lvidiu(sb); + if (!lvidiu) + return; + mutex_lock(&sbi->s_alloc_mutex); lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; udf_time_to_disk_stamp(&lvid->recordingDateAndTime, @@ -1767,6 +1970,8 @@ static void udf_open_lvid(struct super_block *sb) mark_buffer_dirty(bh); sbi->s_lvid_dirty = 0; mutex_unlock(&sbi->s_alloc_mutex); + /* Make opening of filesystem visible on the media immediately */ + sync_dirty_buffer(bh); } static void udf_close_lvid(struct super_block *sb) @@ -1778,10 +1983,12 @@ static void udf_close_lvid(struct super_block *sb) if (!bh) return; + lvid = (struct logicalVolIntegrityDesc *)bh->b_data; + lvidiu = udf_sb_lvidiu(sb); + if (!lvidiu) + return; mutex_lock(&sbi->s_alloc_mutex); - lvid = (struct logicalVolIntegrityDesc *)bh->b_data; - lvidiu = udf_sb_lvidiu(sbi); lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; udf_time_to_disk_stamp(&lvid->recordingDateAndTime, CURRENT_TIME); @@ -1807,6 +2014,8 @@ static void udf_close_lvid(struct super_block *sb) mark_buffer_dirty(bh); sbi->s_lvid_dirty = 0; mutex_unlock(&sbi->s_alloc_mutex); + /* Make closing of filesystem visible on the media immediately */ + sync_dirty_buffer(bh); } u64 lvid_get_unique_id(struct super_block *sb) @@ -1836,64 +2045,17 @@ u64 lvid_get_unique_id(struct super_block *sb) return ret; } -static void udf_sb_free_bitmap(struct udf_bitmap *bitmap) -{ - int i; - int nr_groups = bitmap->s_nr_groups; - int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * - nr_groups); - - for (i = 0; i < nr_groups; i++) - if (bitmap->s_block_bitmap[i]) - brelse(bitmap->s_block_bitmap[i]); - - if (size <= PAGE_SIZE) - kfree(bitmap); - else - vfree(bitmap); -} - -static void udf_free_partition(struct udf_part_map *map) -{ - int i; - struct udf_meta_data *mdata; - - if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) - iput(map->s_uspace.s_table); - if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) - iput(map->s_fspace.s_table); - if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) - udf_sb_free_bitmap(map->s_uspace.s_bitmap); - if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) - udf_sb_free_bitmap(map->s_fspace.s_bitmap); - if (map->s_partition_type == UDF_SPARABLE_MAP15) - for (i = 0; i < 4; i++) - brelse(map->s_type_specific.s_sparing.s_spar_map[i]); - else if (map->s_partition_type == UDF_METADATA_MAP25) { - mdata = &map->s_type_specific.s_metadata; - iput(mdata->s_metadata_fe); - mdata->s_metadata_fe = NULL; - - iput(mdata->s_mirror_fe); - mdata->s_mirror_fe = NULL; - - iput(mdata->s_bitmap_fe); - mdata->s_bitmap_fe = NULL; - } -} - static int udf_fill_super(struct super_block *sb, void *options, int silent) { - int i; - int ret; + int ret = -EINVAL; struct inode *inode = NULL; struct udf_options uopt; struct kernel_lb_addr rootdir, fileset; struct udf_sb_info *sbi; uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT); - uopt.uid = -1; - uopt.gid = -1; + uopt.uid = INVALID_UID; + uopt.gid = INVALID_GID; uopt.umask = 0; uopt.fmode = UDF_INVALID_MODE; uopt.dmode = UDF_INVALID_MODE; @@ -1949,7 +2111,6 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) sb->s_op = &udf_sb_ops; sb->s_export_op = &udf_export_ops; - sb->s_dirt = 0; sb->s_magic = UDF_SUPER_MAGIC; sb->s_time_gran = 1000; @@ -1958,16 +2119,21 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) } else { uopt.blocksize = bdev_logical_block_size(sb->s_bdev); ret = udf_load_vrs(sb, &uopt, silent, &fileset); - if (!ret && uopt.blocksize != UDF_DEFAULT_BLOCKSIZE) { + if (ret == -EAGAIN && uopt.blocksize != UDF_DEFAULT_BLOCKSIZE) { if (!silent) pr_notice("Rescanning with blocksize %d\n", UDF_DEFAULT_BLOCKSIZE); + brelse(sbi->s_lvid_bh); + sbi->s_lvid_bh = NULL; uopt.blocksize = UDF_DEFAULT_BLOCKSIZE; ret = udf_load_vrs(sb, &uopt, silent, &fileset); } } - if (!ret) { - udf_warn(sb, "No partition found (1)\n"); + if (ret < 0) { + if (ret == -EAGAIN) { + udf_warn(sb, "No partition found (1)\n"); + ret = -EINVAL; + } goto error_out; } @@ -1975,19 +2141,27 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) if (sbi->s_lvid_bh) { struct logicalVolIntegrityDescImpUse *lvidiu = - udf_sb_lvidiu(sbi); - uint16_t minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev); - uint16_t minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev); - /* uint16_t maxUDFWriteRev = - le16_to_cpu(lvidiu->maxUDFWriteRev); */ + udf_sb_lvidiu(sb); + uint16_t minUDFReadRev; + uint16_t minUDFWriteRev; + if (!lvidiu) { + ret = -EINVAL; + goto error_out; + } + minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev); + minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev); if (minUDFReadRev > UDF_MAX_READ_VERSION) { udf_err(sb, "minUDFReadRev=%x (max is %x)\n", - le16_to_cpu(lvidiu->minUDFReadRev), + minUDFReadRev, UDF_MAX_READ_VERSION); + ret = -EINVAL; goto error_out; - } else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION) - sb->s_flags |= MS_RDONLY; + } else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION && + !(sb->s_flags & MS_RDONLY)) { + ret = -EACCES; + goto error_out; + } sbi->s_udfrev = minUDFWriteRev; @@ -1999,17 +2173,20 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) if (!sbi->s_partitions) { udf_warn(sb, "No partition found (2)\n"); + ret = -EINVAL; goto error_out; } if (sbi->s_partmaps[sbi->s_partition].s_partition_flags & - UDF_PART_FLAG_READ_ONLY) { - pr_notice("Partition marked readonly; forcing readonly mount\n"); - sb->s_flags |= MS_RDONLY; + UDF_PART_FLAG_READ_ONLY && + !(sb->s_flags & MS_RDONLY)) { + ret = -EACCES; + goto error_out; } if (udf_find_fileset(sb, &fileset, &rootdir)) { udf_warn(sb, "No fileset found\n"); + ret = -EINVAL; goto error_out; } @@ -2031,25 +2208,24 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) if (!inode) { udf_err(sb, "Error in udf_iget, block=%d, partition=%d\n", rootdir.logicalBlockNum, rootdir.partitionReferenceNum); + ret = -EIO; goto error_out; } /* Allocate a dentry for the root inode */ - sb->s_root = d_alloc_root(inode); + sb->s_root = d_make_root(inode); if (!sb->s_root) { udf_err(sb, "Couldn't allocate root dentry\n"); - iput(inode); + ret = -ENOMEM; goto error_out; } sb->s_maxbytes = MAX_LFS_FILESIZE; + sb->s_max_links = UDF_MAX_LINKS; return 0; error_out: if (sbi->s_vat_inode) iput(sbi->s_vat_inode); - if (sbi->s_partitions) - for (i = 0; i < sbi->s_partitions; i++) - udf_free_partition(&sbi->s_partmaps[i]); #ifdef CONFIG_UDF_NLS if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) unload_nls(sbi->s_nls_map); @@ -2057,12 +2233,11 @@ error_out: if (!(sb->s_flags & MS_RDONLY)) udf_close_lvid(sb); brelse(sbi->s_lvid_bh); - - kfree(sbi->s_partmaps); + udf_sb_free_partitions(sb); kfree(sbi); sb->s_fs_info = NULL; - return -EINVAL; + return ret; } void _udf_err(struct super_block *sb, const char *function, @@ -2071,10 +2246,6 @@ void _udf_err(struct super_block *sb, const char *function, struct va_format vaf; va_list args; - /* mark sb error */ - if (!(sb->s_flags & MS_RDONLY)) - sb->s_dirt = 1; - va_start(args, fmt); vaf.fmt = fmt; @@ -2103,16 +2274,12 @@ void _udf_warn(struct super_block *sb, const char *function, static void udf_put_super(struct super_block *sb) { - int i; struct udf_sb_info *sbi; sbi = UDF_SB(sb); if (sbi->s_vat_inode) iput(sbi->s_vat_inode); - if (sbi->s_partitions) - for (i = 0; i < sbi->s_partitions; i++) - udf_free_partition(&sbi->s_partmaps[i]); #ifdef CONFIG_UDF_NLS if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) unload_nls(sbi->s_nls_map); @@ -2120,7 +2287,7 @@ static void udf_put_super(struct super_block *sb) if (!(sb->s_flags & MS_RDONLY)) udf_close_lvid(sb); brelse(sbi->s_lvid_bh); - kfree(sbi->s_partmaps); + udf_sb_free_partitions(sb); kfree(sb->s_fs_info); sb->s_fs_info = NULL; } @@ -2136,7 +2303,6 @@ static int udf_sync_fs(struct super_block *sb, int wait) * the buffer for IO */ mark_buffer_dirty(sbi->s_lvid_bh); - sb->s_dirt = 0; sbi->s_lvid_dirty = 0; } mutex_unlock(&sbi->s_alloc_mutex); @@ -2151,11 +2317,7 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf) struct logicalVolIntegrityDescImpUse *lvidiu; u64 id = huge_encode_dev(sb->s_bdev->bd_dev); - if (sbi->s_lvid_bh != NULL) - lvidiu = udf_sb_lvidiu(sbi); - else - lvidiu = NULL; - + lvidiu = udf_sb_lvidiu(sb); buf->f_type = UDF_SUPER_MAGIC; buf->f_bsize = sb->s_blocksize; buf->f_blocks = sbi->s_partmaps[sbi->s_partition].s_partition_len; |