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Merge tag 'for_v5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull ext2, quota, udf fixes and cleanups from Jan Kara:

 - two small quota fixes (in grace time handling and possible missed
   accounting of preallocated blocks beyond EOF).

 - some ext2 cleanups

 - udf fixes for better compatibility with Windows 10 generated media
   (named streams, write-protection using domain-identifier, placement
   of volume recognition sequence)

 - some udf cleanups

* tag 'for_v5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  quota: fix wrong condition in is_quota_modification()
  fs-udf: Delete an unnecessary check before brelse()
  ext2: Delete an unnecessary check before brelse()
  udf: Drop forward function declarations
  udf: Verify domain identifier fields
  udf: augment UDF permissions on new inodes
  udf: Use dynamic debug infrastructure
  udf: reduce leakage of blocks related to named streams
  udf: prevent allocation beyond UDF partition
  quota: fix condition for resetting time limit in do_set_dqblk()
  ext2: code cleanup for ext2_free_blocks()
  ext2: fix block range in ext2_data_block_valid()
  udf: support 2048-byte spacing of VRS descriptors on 4K media
  udf: refactor VRS descriptor identification
This commit is contained in:
Linus Torvalds 2019-09-21 13:53:34 -07:00
commit 7ce1e15d9a
13 changed files with 249 additions and 136 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
fs/ext2/balloc.c
View file

@ -490,9 +490,7 @@ void ext2_free_blocks (struct inode * inode, unsigned long block,
struct ext2_super_block * es = sbi->s_es; struct ext2_super_block * es = sbi->s_es;
unsigned freed = 0, group_freed; unsigned freed = 0, group_freed;
if (block < le32_to_cpu(es->s_first_data_block) || if (!ext2_data_block_valid(sbi, block, count)) {
block + count < block ||
block + count > le32_to_cpu(es->s_blocks_count)) {
ext2_error (sb, "ext2_free_blocks", ext2_error (sb, "ext2_free_blocks",
"Freeing blocks not in datazone - " "Freeing blocks not in datazone - "
"block = %lu, count = %lu", block, count); "block = %lu, count = %lu", block, count);
@ -1203,13 +1201,13 @@ int ext2_data_block_valid(struct ext2_sb_info *sbi, ext2_fsblk_t start_blk,
unsigned int count) unsigned int count)
{ {
if ((start_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) || if ((start_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
(start_blk + count < start_blk) || (start_blk + count - 1 < start_blk) ||
(start_blk > le32_to_cpu(sbi->s_es->s_blocks_count))) (start_blk + count - 1 >= le32_to_cpu(sbi->s_es->s_blocks_count)))
return 0; return 0;
/* Ensure we do not step over superblock */ /* Ensure we do not step over superblock */
if ((start_blk <= sbi->s_sb_block) && if ((start_blk <= sbi->s_sb_block) &&
(start_blk + count >= sbi->s_sb_block)) (start_blk + count - 1 >= sbi->s_sb_block))
return 0; return 0;
return 1; return 1;

3
fs/ext2/super.c
View file

@ -162,8 +162,7 @@ static void ext2_put_super (struct super_block * sb)
} }
db_count = sbi->s_gdb_count; db_count = sbi->s_gdb_count;
for (i = 0; i < db_count; i++) for (i = 0; i < db_count; i++)
if (sbi->s_group_desc[i]) brelse(sbi->s_group_desc[i]);
brelse (sbi->s_group_desc[i]);
kfree(sbi->s_group_desc); kfree(sbi->s_group_desc);
kfree(sbi->s_debts); kfree(sbi->s_debts);
percpu_counter_destroy(&sbi->s_freeblocks_counter); percpu_counter_destroy(&sbi->s_freeblocks_counter);

2
fs/ext2/xattr.c
View file

@ -794,7 +794,7 @@ ext2_xattr_delete_inode(struct inode *inode)
if (!EXT2_I(inode)->i_file_acl) if (!EXT2_I(inode)->i_file_acl)
goto cleanup; goto cleanup;
if (!ext2_data_block_valid(sbi, EXT2_I(inode)->i_file_acl, 0)) { if (!ext2_data_block_valid(sbi, EXT2_I(inode)->i_file_acl, 1)) {
ext2_error(inode->i_sb, "ext2_xattr_delete_inode", ext2_error(inode->i_sb, "ext2_xattr_delete_inode",
"inode %ld: xattr block %d is out of data blocks range", "inode %ld: xattr block %d is out of data blocks range",
inode->i_ino, EXT2_I(inode)->i_file_acl); inode->i_ino, EXT2_I(inode)->i_file_acl);

4
fs/quota/dquot.c
View file

@ -2731,7 +2731,7 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di)
if (check_blim) { if (check_blim) {
if (!dm->dqb_bsoftlimit || if (!dm->dqb_bsoftlimit ||
dm->dqb_curspace + dm->dqb_rsvspace < dm->dqb_bsoftlimit) { dm->dqb_curspace + dm->dqb_rsvspace <= dm->dqb_bsoftlimit) {
dm->dqb_btime = 0; dm->dqb_btime = 0;
clear_bit(DQ_BLKS_B, &dquot->dq_flags); clear_bit(DQ_BLKS_B, &dquot->dq_flags);
} else if (!(di->d_fieldmask & QC_SPC_TIMER)) } else if (!(di->d_fieldmask & QC_SPC_TIMER))
@ -2740,7 +2740,7 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di)
} }
if (check_ilim) { if (check_ilim) {
if (!dm->dqb_isoftlimit || if (!dm->dqb_isoftlimit ||
dm->dqb_curinodes < dm->dqb_isoftlimit) { dm->dqb_curinodes <= dm->dqb_isoftlimit) {
dm->dqb_itime = 0; dm->dqb_itime = 0;
clear_bit(DQ_INODES_B, &dquot->dq_flags); clear_bit(DQ_INODES_B, &dquot->dq_flags);
} else if (!(di->d_fieldmask & QC_INO_TIMER)) } else if (!(di->d_fieldmask & QC_INO_TIMER))

11
fs/udf/balloc.c
View file

@ -325,6 +325,17 @@ got_block:
newblock = bit + (block_group << (sb->s_blocksize_bits + 3)) - newblock = bit + (block_group << (sb->s_blocksize_bits + 3)) -
(sizeof(struct spaceBitmapDesc) << 3); (sizeof(struct spaceBitmapDesc) << 3);
if (newblock >= sbi->s_partmaps[partition].s_partition_len) {
/*
* Ran off the end of the bitmap, and bits following are
* non-compliant (not all zero)
*/
udf_err(sb, "bitmap for partition %d corrupted (block %u marked"
" as free, partition length is %u)\n", partition,
newblock, sbi->s_partmaps[partition].s_partition_len);
goto error_return;
}
if (!udf_clear_bit(bit, bh->b_data)) { if (!udf_clear_bit(bit, bh->b_data)) {
udf_debug("bit already cleared for block %d\n", bit); udf_debug("bit already cleared for block %d\n", bit);
goto repeat; goto repeat;

14
fs/udf/ecma_167.h
View file

@ -88,6 +88,20 @@ struct regid {
#define ENTITYID_FLAGS_DIRTY 0x00 #define ENTITYID_FLAGS_DIRTY 0x00
#define ENTITYID_FLAGS_PROTECTED 0x01 #define ENTITYID_FLAGS_PROTECTED 0x01
/* OSTA UDF 2.1.5.2 */
#define UDF_ID_COMPLIANT "*OSTA UDF Compliant"
/* OSTA UDF 2.1.5.3 */
struct domainEntityIDSuffix {
uint16_t revision;
uint8_t flags;
uint8_t reserved[5];
};
/* OSTA UDF 2.1.5.3 */
#define ENTITYIDSUFFIX_FLAGS_HARDWRITEPROTECT 0
#define ENTITYIDSUFFIX_FLAGS_SOFTWRITEPROTECT 1
/* Volume Structure Descriptor (ECMA 167r3 2/9.1) */ /* Volume Structure Descriptor (ECMA 167r3 2/9.1) */
#define VSD_STD_ID_LEN 5 #define VSD_STD_ID_LEN 5
struct volStructDesc { struct volStructDesc {

3
fs/udf/file.c
View file

@ -280,6 +280,9 @@ static int udf_setattr(struct dentry *dentry, struct iattr *attr)
return error; return error;
} }
if (attr->ia_valid & ATTR_MODE)
udf_update_extra_perms(inode, attr->ia_mode);
setattr_copy(inode, attr); setattr_copy(inode, attr);
mark_inode_dirty(inode); mark_inode_dirty(inode);
return 0; return 0;

3
fs/udf/ialloc.c
View file

@ -118,6 +118,9 @@ struct inode *udf_new_inode(struct inode *dir, umode_t mode)
iinfo->i_lenAlloc = 0; iinfo->i_lenAlloc = 0;
iinfo->i_use = 0; iinfo->i_use = 0;
iinfo->i_checkpoint = 1; iinfo->i_checkpoint = 1;
iinfo->i_extraPerms = FE_PERM_U_CHATTR;
udf_update_extra_perms(inode, mode);
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB)) if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))

55
fs/udf/inode.c
View file

@ -45,6 +45,13 @@
#define EXTENT_MERGE_SIZE 5 #define EXTENT_MERGE_SIZE 5
#define FE_MAPPED_PERMS (FE_PERM_U_READ | FE_PERM_U_WRITE | FE_PERM_U_EXEC | \
FE_PERM_G_READ | FE_PERM_G_WRITE | FE_PERM_G_EXEC | \
FE_PERM_O_READ | FE_PERM_O_WRITE | FE_PERM_O_EXEC)
#define FE_DELETE_PERMS (FE_PERM_U_DELETE | FE_PERM_G_DELETE | \
FE_PERM_O_DELETE)
static umode_t udf_convert_permissions(struct fileEntry *); static umode_t udf_convert_permissions(struct fileEntry *);
static int udf_update_inode(struct inode *, int); static int udf_update_inode(struct inode *, int);
static int udf_sync_inode(struct inode *inode); static int udf_sync_inode(struct inode *inode);
@ -1458,6 +1465,8 @@ reread:
else else
inode->i_mode = udf_convert_permissions(fe); inode->i_mode = udf_convert_permissions(fe);
inode->i_mode &= ~sbi->s_umask; inode->i_mode &= ~sbi->s_umask;
iinfo->i_extraPerms = le32_to_cpu(fe->permissions) & ~FE_MAPPED_PERMS;
read_unlock(&sbi->s_cred_lock); read_unlock(&sbi->s_cred_lock);
link_count = le16_to_cpu(fe->fileLinkCount); link_count = le16_to_cpu(fe->fileLinkCount);
@ -1485,6 +1494,8 @@ reread:
iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr); iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr);
iinfo->i_lenAlloc = le32_to_cpu(fe->lengthAllocDescs); iinfo->i_lenAlloc = le32_to_cpu(fe->lengthAllocDescs);
iinfo->i_checkpoint = le32_to_cpu(fe->checkpoint); iinfo->i_checkpoint = le32_to_cpu(fe->checkpoint);
iinfo->i_streamdir = 0;
iinfo->i_lenStreams = 0;
} else { } else {
inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) << inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) <<
(inode->i_sb->s_blocksize_bits - 9); (inode->i_sb->s_blocksize_bits - 9);
@ -1498,6 +1509,16 @@ reread:
iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr); iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr);
iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs); iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs);
iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint); iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint);
/* Named streams */
iinfo->i_streamdir = (efe->streamDirectoryICB.extLength != 0);
iinfo->i_locStreamdir =
lelb_to_cpu(efe->streamDirectoryICB.extLocation);
iinfo->i_lenStreams = le64_to_cpu(efe->objectSize);
if (iinfo->i_lenStreams >= inode->i_size)
iinfo->i_lenStreams -= inode->i_size;
else
iinfo->i_lenStreams = 0;
} }
inode->i_generation = iinfo->i_unique; inode->i_generation = iinfo->i_unique;
@ -1619,6 +1640,23 @@ static umode_t udf_convert_permissions(struct fileEntry *fe)
return mode; return mode;
} }
void udf_update_extra_perms(struct inode *inode, umode_t mode)
{
struct udf_inode_info *iinfo = UDF_I(inode);
/*
* UDF 2.01 sec. 3.3.3.3 Note 2:
* In Unix, delete permission tracks write
*/
iinfo->i_extraPerms &= ~FE_DELETE_PERMS;
if (mode & 0200)
iinfo->i_extraPerms |= FE_PERM_U_DELETE;
if (mode & 0020)
iinfo->i_extraPerms |= FE_PERM_G_DELETE;
if (mode & 0002)
iinfo->i_extraPerms |= FE_PERM_O_DELETE;
}
int udf_write_inode(struct inode *inode, struct writeback_control *wbc) int udf_write_inode(struct inode *inode, struct writeback_control *wbc)
{ {
return udf_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL); return udf_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
@ -1691,10 +1729,7 @@ static int udf_update_inode(struct inode *inode, int do_sync)
((inode->i_mode & 0070) << 2) | ((inode->i_mode & 0070) << 2) |
((inode->i_mode & 0700) << 4); ((inode->i_mode & 0700) << 4);
udfperms |= (le32_to_cpu(fe->permissions) & udfperms |= iinfo->i_extraPerms;
(FE_PERM_O_DELETE | FE_PERM_O_CHATTR |
FE_PERM_G_DELETE | FE_PERM_G_CHATTR |
FE_PERM_U_DELETE | FE_PERM_U_CHATTR));
fe->permissions = cpu_to_le32(udfperms); fe->permissions = cpu_to_le32(udfperms);
if (S_ISDIR(inode->i_mode) && inode->i_nlink > 0) if (S_ISDIR(inode->i_mode) && inode->i_nlink > 0)
@ -1760,9 +1795,19 @@ static int udf_update_inode(struct inode *inode, int do_sync)
iinfo->i_ext.i_data, iinfo->i_ext.i_data,
inode->i_sb->s_blocksize - inode->i_sb->s_blocksize -
sizeof(struct extendedFileEntry)); sizeof(struct extendedFileEntry));
efe->objectSize = cpu_to_le64(inode->i_size); efe->objectSize =
cpu_to_le64(inode->i_size + iinfo->i_lenStreams);
efe->logicalBlocksRecorded = cpu_to_le64(lb_recorded); efe->logicalBlocksRecorded = cpu_to_le64(lb_recorded);
if (iinfo->i_streamdir) {
struct long_ad *icb_lad = &efe->streamDirectoryICB;
icb_lad->extLocation =
cpu_to_lelb(iinfo->i_locStreamdir);
icb_lad->extLength =
cpu_to_le32(inode->i_sb->s_blocksize);
}
udf_adjust_time(iinfo, inode->i_atime); udf_adjust_time(iinfo, inode->i_atime);
udf_adjust_time(iinfo, inode->i_mtime); udf_adjust_time(iinfo, inode->i_mtime);
udf_adjust_time(iinfo, inode->i_ctime); udf_adjust_time(iinfo, inode->i_ctime);

261
fs/udf/super.c
View file

@ -92,10 +92,6 @@ static void udf_put_super(struct super_block *);
static int udf_sync_fs(struct super_block *, int); static int udf_sync_fs(struct super_block *, int);
static int udf_remount_fs(struct super_block *, int *, char *); static int udf_remount_fs(struct super_block *, int *, char *);
static void udf_load_logicalvolint(struct super_block *, struct kernel_extent_ad); static void udf_load_logicalvolint(struct super_block *, struct kernel_extent_ad);
static int udf_find_fileset(struct super_block *, struct kernel_lb_addr *,
struct kernel_lb_addr *);
static void udf_load_fileset(struct super_block *, struct buffer_head *,
struct kernel_lb_addr *);
static void udf_open_lvid(struct super_block *); static void udf_open_lvid(struct super_block *);
static void udf_close_lvid(struct super_block *); static void udf_close_lvid(struct super_block *);
static unsigned int udf_count_free(struct super_block *); static unsigned int udf_count_free(struct super_block *);
@ -151,9 +147,11 @@ static struct inode *udf_alloc_inode(struct super_block *sb)
ei->i_unique = 0; ei->i_unique = 0;
ei->i_lenExtents = 0; ei->i_lenExtents = 0;
ei->i_lenStreams = 0;
ei->i_next_alloc_block = 0; ei->i_next_alloc_block = 0;
ei->i_next_alloc_goal = 0; ei->i_next_alloc_goal = 0;
ei->i_strat4096 = 0; ei->i_strat4096 = 0;
ei->i_streamdir = 0;
init_rwsem(&ei->i_data_sem); init_rwsem(&ei->i_data_sem);
ei->cached_extent.lstart = -1; ei->cached_extent.lstart = -1;
spin_lock_init(&ei->i_extent_cache_lock); spin_lock_init(&ei->i_extent_cache_lock);
@ -271,8 +269,7 @@ static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
int nr_groups = bitmap->s_nr_groups; int nr_groups = bitmap->s_nr_groups;
for (i = 0; i < nr_groups; i++) for (i = 0; i < nr_groups; i++)
if (bitmap->s_block_bitmap[i]) brelse(bitmap->s_block_bitmap[i]);
brelse(bitmap->s_block_bitmap[i]);
kvfree(bitmap); kvfree(bitmap);
} }
@ -646,16 +643,67 @@ out_unlock:
return error; return error;
} }
/* Check Volume Structure Descriptors (ECMA 167 2/9.1) */ /*
/* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */ * Check VSD descriptor. Returns -1 in case we are at the end of volume
static loff_t udf_check_vsd(struct super_block *sb) * recognition area, 0 if the descriptor is valid but non-interesting, 1 if
* we found one of NSR descriptors we are looking for.
*/
static int identify_vsd(const struct volStructDesc *vsd)
{
int ret = 0;
if (!memcmp(vsd->stdIdent, VSD_STD_ID_CD001, VSD_STD_ID_LEN)) {
switch (vsd->structType) {
case 0:
udf_debug("ISO9660 Boot Record found\n");
break;
case 1:
udf_debug("ISO9660 Primary Volume Descriptor found\n");
break;
case 2:
udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
break;
case 3:
udf_debug("ISO9660 Volume Partition Descriptor found\n");
break;
case 255:
udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
break;
default:
udf_debug("ISO9660 VRS (%u) found\n", vsd->structType);
break;
}
} else if (!memcmp(vsd->stdIdent, VSD_STD_ID_BEA01, VSD_STD_ID_LEN))
; /* ret = 0 */
else if (!memcmp(vsd->stdIdent, VSD_STD_ID_NSR02, VSD_STD_ID_LEN))
ret = 1;
else if (!memcmp(vsd->stdIdent, VSD_STD_ID_NSR03, VSD_STD_ID_LEN))
ret = 1;
else if (!memcmp(vsd->stdIdent, VSD_STD_ID_BOOT2, VSD_STD_ID_LEN))
; /* ret = 0 */
else if (!memcmp(vsd->stdIdent, VSD_STD_ID_CDW02, VSD_STD_ID_LEN))
; /* ret = 0 */
else {
/* TEA01 or invalid id : end of volume recognition area */
ret = -1;
}
return ret;
}
/*
* Check Volume Structure Descriptors (ECMA 167 2/9.1)
* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1)
* @return 1 if NSR02 or NSR03 found,
* -1 if first sector read error, 0 otherwise
*/
static int udf_check_vsd(struct super_block *sb)
{ {
struct volStructDesc *vsd = NULL; struct volStructDesc *vsd = NULL;
loff_t sector = VSD_FIRST_SECTOR_OFFSET; loff_t sector = VSD_FIRST_SECTOR_OFFSET;
int sectorsize; int sectorsize;
struct buffer_head *bh = NULL; struct buffer_head *bh = NULL;
int nsr02 = 0; int nsr = 0;
int nsr03 = 0;
struct udf_sb_info *sbi; struct udf_sb_info *sbi;
sbi = UDF_SB(sb); sbi = UDF_SB(sb);
@ -679,71 +727,36 @@ static loff_t udf_check_vsd(struct super_block *sb)
* activity. This actually happened with uninitialised SSD partitions * activity. This actually happened with uninitialised SSD partitions
* (all 0xFF) before the check for the limit and all valid IDs were * (all 0xFF) before the check for the limit and all valid IDs were
* added */ * added */
for (; !nsr02 && !nsr03 && sector < VSD_MAX_SECTOR_OFFSET; for (; !nsr && sector < VSD_MAX_SECTOR_OFFSET; sector += sectorsize) {
sector += sectorsize) {
/* Read a block */ /* Read a block */
bh = udf_tread(sb, sector >> sb->s_blocksize_bits); bh = udf_tread(sb, sector >> sb->s_blocksize_bits);
if (!bh) if (!bh)
break; break;
/* Look for ISO descriptors */
vsd = (struct volStructDesc *)(bh->b_data + vsd = (struct volStructDesc *)(bh->b_data +
(sector & (sb->s_blocksize - 1))); (sector & (sb->s_blocksize - 1)));
nsr = identify_vsd(vsd);
if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001, /* Found NSR or end? */
VSD_STD_ID_LEN)) { if (nsr) {
switch (vsd->structType) {
case 0:
udf_debug("ISO9660 Boot Record found\n");
break;
case 1:
udf_debug("ISO9660 Primary Volume Descriptor found\n");
break;
case 2:
udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
break;
case 3:
udf_debug("ISO9660 Volume Partition Descriptor found\n");
break;
case 255:
udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
break;
default:
udf_debug("ISO9660 VRS (%u) found\n",
vsd->structType);
break;
}
} else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BEA01,
VSD_STD_ID_LEN))
; /* nothing */
else if (!strncmp(vsd->stdIdent, VSD_STD_ID_TEA01,
VSD_STD_ID_LEN)) {
brelse(bh);
break;
} else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR02,
VSD_STD_ID_LEN))
nsr02 = sector;
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); brelse(bh);
break; break;
} }
/*
* Special handling for improperly formatted VRS (e.g., Win10)
* where components are separated by 2048 bytes even though
* sectors are 4K
*/
if (sb->s_blocksize == 4096) {
nsr = identify_vsd(vsd + 1);
/* Ignore unknown IDs... */
if (nsr < 0)
nsr = 0;
}
brelse(bh); brelse(bh);
} }
if (nsr03) if (nsr > 0)
return nsr03; return 1;
else if (nsr02)
return nsr02;
else if (!bh && sector - (sbi->s_session << sb->s_blocksize_bits) == else if (!bh && sector - (sbi->s_session << sb->s_blocksize_bits) ==
VSD_FIRST_SECTOR_OFFSET) VSD_FIRST_SECTOR_OFFSET)
return -1; return -1;
@ -751,34 +764,82 @@ static loff_t udf_check_vsd(struct super_block *sb)
return 0; return 0;
} }
static int udf_verify_domain_identifier(struct super_block *sb,
struct regid *ident, char *dname)
{
struct domainEntityIDSuffix *suffix;
if (memcmp(ident->ident, UDF_ID_COMPLIANT, strlen(UDF_ID_COMPLIANT))) {
udf_warn(sb, "Not OSTA UDF compliant %s descriptor.\n", dname);
goto force_ro;
}
if (ident->flags & (1 << ENTITYID_FLAGS_DIRTY)) {
udf_warn(sb, "Possibly not OSTA UDF compliant %s descriptor.\n",
dname);
goto force_ro;
}
suffix = (struct domainEntityIDSuffix *)ident->identSuffix;
if (suffix->flags & (1 << ENTITYIDSUFFIX_FLAGS_HARDWRITEPROTECT) ||
suffix->flags & (1 << ENTITYIDSUFFIX_FLAGS_SOFTWRITEPROTECT)) {
if (!sb_rdonly(sb)) {
udf_warn(sb, "Descriptor for %s marked write protected."
" Forcing read only mount.\n", dname);
}
goto force_ro;
}
return 0;
force_ro:
if (!sb_rdonly(sb))
return -EACCES;
UDF_SET_FLAG(sb, UDF_FLAG_RW_INCOMPAT);
return 0;
}
static int udf_load_fileset(struct super_block *sb, struct fileSetDesc *fset,
struct kernel_lb_addr *root)
{
int ret;
ret = udf_verify_domain_identifier(sb, &fset->domainIdent, "file set");
if (ret < 0)
return ret;
*root = lelb_to_cpu(fset->rootDirectoryICB.extLocation);
UDF_SB(sb)->s_serial_number = le16_to_cpu(fset->descTag.tagSerialNum);
udf_debug("Rootdir at block=%u, partition=%u\n",
root->logicalBlockNum, root->partitionReferenceNum);
return 0;
}
static int udf_find_fileset(struct super_block *sb, static int udf_find_fileset(struct super_block *sb,
struct kernel_lb_addr *fileset, struct kernel_lb_addr *fileset,
struct kernel_lb_addr *root) struct kernel_lb_addr *root)
{ {
struct buffer_head *bh = NULL; struct buffer_head *bh = NULL;
uint16_t ident; uint16_t ident;
int ret;
if (fileset->logicalBlockNum != 0xFFFFFFFF || if (fileset->logicalBlockNum == 0xFFFFFFFF &&
fileset->partitionReferenceNum != 0xFFFF) { fileset->partitionReferenceNum == 0xFFFF)
bh = udf_read_ptagged(sb, fileset, 0, &ident); return -EINVAL;
if (!bh) { bh = udf_read_ptagged(sb, fileset, 0, &ident);
return 1; if (!bh)
} else if (ident != TAG_IDENT_FSD) { return -EIO;
brelse(bh); if (ident != TAG_IDENT_FSD) {
return 1;
}
udf_debug("Fileset at block=%u, partition=%u\n",
fileset->logicalBlockNum,
fileset->partitionReferenceNum);
UDF_SB(sb)->s_partition = fileset->partitionReferenceNum;
udf_load_fileset(sb, bh, root);
brelse(bh); brelse(bh);
return 0; return -EINVAL;
} }
return 1;
udf_debug("Fileset at block=%u, partition=%u\n",
fileset->logicalBlockNum, fileset->partitionReferenceNum);
UDF_SB(sb)->s_partition = fileset->partitionReferenceNum;
ret = udf_load_fileset(sb, (struct fileSetDesc *)bh->b_data, root);
brelse(bh);
return ret;
} }
/* /*
@ -794,9 +855,7 @@ static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
struct buffer_head *bh; struct buffer_head *bh;
uint16_t ident; uint16_t ident;
int ret = -ENOMEM; int ret = -ENOMEM;
#ifdef UDFFS_DEBUG
struct timestamp *ts; struct timestamp *ts;
#endif
outstr = kmalloc(128, GFP_NOFS); outstr = kmalloc(128, GFP_NOFS);
if (!outstr) if (!outstr)
@ -817,13 +876,10 @@ static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
udf_disk_stamp_to_time(&UDF_SB(sb)->s_record_time, udf_disk_stamp_to_time(&UDF_SB(sb)->s_record_time,
pvoldesc->recordingDateAndTime); pvoldesc->recordingDateAndTime);
#ifdef UDFFS_DEBUG
ts = &pvoldesc->recordingDateAndTime; ts = &pvoldesc->recordingDateAndTime;
udf_debug("recording time %04u/%02u/%02u %02u:%02u (%x)\n", udf_debug("recording time %04u/%02u/%02u %02u:%02u (%x)\n",
le16_to_cpu(ts->year), ts->month, ts->day, ts->hour, le16_to_cpu(ts->year), ts->month, ts->day, ts->hour,
ts->minute, le16_to_cpu(ts->typeAndTimezone)); ts->minute, le16_to_cpu(ts->typeAndTimezone));
#endif
ret = udf_dstrCS0toChar(sb, outstr, 31, pvoldesc->volIdent, 32); ret = udf_dstrCS0toChar(sb, outstr, 31, pvoldesc->volIdent, 32);
if (ret < 0) { if (ret < 0) {
@ -939,21 +995,6 @@ static int udf_load_metadata_files(struct super_block *sb, int partition,
return 0; return 0;
} }
static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
struct kernel_lb_addr *root)
{
struct fileSetDesc *fset;
fset = (struct fileSetDesc *)bh->b_data;
*root = lelb_to_cpu(fset->rootDirectoryICB.extLocation);
UDF_SB(sb)->s_serial_number = le16_to_cpu(fset->descTag.tagSerialNum);
udf_debug("Rootdir at block=%u, partition=%u\n",
root->logicalBlockNum, root->partitionReferenceNum);
}
int udf_compute_nr_groups(struct super_block *sb, u32 partition) int udf_compute_nr_groups(struct super_block *sb, u32 partition)
{ {
struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition]; struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
@ -1238,9 +1279,7 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block)
* PHYSICAL partitions are already set up * PHYSICAL partitions are already set up
*/ */
type1_idx = i; type1_idx = i;
#ifdef UDFFS_DEBUG
map = NULL; /* supress 'maybe used uninitialized' warning */ map = NULL; /* supress 'maybe used uninitialized' warning */
#endif
for (i = 0; i < sbi->s_partitions; i++) { for (i = 0; i < sbi->s_partitions; i++) {
map = &sbi->s_partmaps[i]; map = &sbi->s_partmaps[i];
@ -1364,6 +1403,10 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
goto out_bh; goto out_bh;
} }
ret = udf_verify_domain_identifier(sb, &lvd->domainIdent,
"logical volume");
if (ret)
goto out_bh;
ret = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps)); ret = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
if (ret) if (ret)
goto out_bh; goto out_bh;
@ -1915,7 +1958,7 @@ static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt,
int silent, struct kernel_lb_addr *fileset) int silent, struct kernel_lb_addr *fileset)
{ {
struct udf_sb_info *sbi = UDF_SB(sb); struct udf_sb_info *sbi = UDF_SB(sb);
loff_t nsr_off; int nsr = 0;
int ret; int ret;
if (!sb_set_blocksize(sb, uopt->blocksize)) { if (!sb_set_blocksize(sb, uopt->blocksize)) {
@ -1926,13 +1969,13 @@ static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt,
sbi->s_last_block = uopt->lastblock; sbi->s_last_block = uopt->lastblock;
if (!uopt->novrs) { if (!uopt->novrs) {
/* Check that it is NSR02 compliant */ /* Check that it is NSR02 compliant */
nsr_off = udf_check_vsd(sb); nsr = udf_check_vsd(sb);
if (!nsr_off) { if (!nsr) {
if (!silent) if (!silent)
udf_warn(sb, "No VRS found\n"); udf_warn(sb, "No VRS found\n");
return -EINVAL; return -EINVAL;
} }
if (nsr_off == -1) if (nsr == -1)
udf_debug("Failed to read sector at offset %d. " udf_debug("Failed to read sector at offset %d. "
"Assuming open disc. Skipping validity " "Assuming open disc. Skipping validity "
"check\n", VSD_FIRST_SECTOR_OFFSET); "check\n", VSD_FIRST_SECTOR_OFFSET);
@ -2216,9 +2259,9 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
UDF_SET_FLAG(sb, UDF_FLAG_RW_INCOMPAT); UDF_SET_FLAG(sb, UDF_FLAG_RW_INCOMPAT);
} }
if (udf_find_fileset(sb, &fileset, &rootdir)) { ret = udf_find_fileset(sb, &fileset, &rootdir);
if (ret < 0) {
udf_warn(sb, "No fileset found\n"); udf_warn(sb, "No fileset found\n");
ret = -EINVAL;
goto error_out; goto error_out;
} }

6
fs/udf/udf_i.h
View file

@ -38,16 +38,20 @@ struct udf_inode_info {
__u32 i_next_alloc_block; __u32 i_next_alloc_block;
__u32 i_next_alloc_goal; __u32 i_next_alloc_goal;
__u32 i_checkpoint; __u32 i_checkpoint;
__u32 i_extraPerms;
unsigned i_alloc_type : 3; unsigned i_alloc_type : 3;
unsigned i_efe : 1; /* extendedFileEntry */ unsigned i_efe : 1; /* extendedFileEntry */
unsigned i_use : 1; /* unallocSpaceEntry */ unsigned i_use : 1; /* unallocSpaceEntry */
unsigned i_strat4096 : 1; unsigned i_strat4096 : 1;
unsigned reserved : 26; unsigned i_streamdir : 1;
unsigned reserved : 25;
union { union {
struct short_ad *i_sad; struct short_ad *i_sad;
struct long_ad *i_lad; struct long_ad *i_lad;
__u8 *i_data; __u8 *i_data;
} i_ext; } i_ext;
struct kernel_lb_addr i_locStreamdir;
__u64 i_lenStreams;
struct rw_semaphore i_data_sem; struct rw_semaphore i_data_sem;
struct udf_ext_cache cached_extent; struct udf_ext_cache cached_extent;
/* Spinlock for protecting extent cache */ /* Spinlock for protecting extent cache */

11
fs/udf/udfdecl.h
View file

@ -31,16 +31,8 @@ extern __printf(3, 4) void _udf_warn(struct super_block *sb,
#define udf_info(fmt, ...) \ #define udf_info(fmt, ...) \
pr_info("INFO " fmt, ##__VA_ARGS__) pr_info("INFO " fmt, ##__VA_ARGS__)
#undef UDFFS_DEBUG
#ifdef UDFFS_DEBUG
#define udf_debug(fmt, ...) \ #define udf_debug(fmt, ...) \
printk(KERN_DEBUG pr_fmt("%s:%d:%s: " fmt), \ pr_debug("%s:%d:%s: " fmt, __FILE__, __LINE__, __func__, ##__VA_ARGS__)
__FILE__, __LINE__, __func__, ##__VA_ARGS__)
#else
#define udf_debug(fmt, ...) \
no_printk(fmt, ##__VA_ARGS__)
#endif
#define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) ) #define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) )
#define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) ) #define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) )
@ -178,6 +170,7 @@ extern int8_t udf_next_aext(struct inode *, struct extent_position *,
struct kernel_lb_addr *, uint32_t *, int); struct kernel_lb_addr *, uint32_t *, int);
extern int8_t udf_current_aext(struct inode *, struct extent_position *, extern int8_t udf_current_aext(struct inode *, struct extent_position *,
struct kernel_lb_addr *, uint32_t *, int); struct kernel_lb_addr *, uint32_t *, int);
extern void udf_update_extra_perms(struct inode *inode, umode_t mode);
/* misc.c */ /* misc.c */
extern struct buffer_head *udf_tgetblk(struct super_block *sb, extern struct buffer_head *udf_tgetblk(struct super_block *sb,

2
include/linux/quotaops.h
View file

@ -22,7 +22,7 @@ static inline struct quota_info *sb_dqopt(struct super_block *sb)
/* i_mutex must being held */ /* i_mutex must being held */
static inline bool is_quota_modification(struct inode *inode, struct iattr *ia) static inline bool is_quota_modification(struct inode *inode, struct iattr *ia)
{ {
return (ia->ia_valid & ATTR_SIZE && ia->ia_size != inode->i_size) || return (ia->ia_valid & ATTR_SIZE) ||
(ia->ia_valid & ATTR_UID && !uid_eq(ia->ia_uid, inode->i_uid)) || (ia->ia_valid & ATTR_UID && !uid_eq(ia->ia_uid, inode->i_uid)) ||
(ia->ia_valid & ATTR_GID && !gid_eq(ia->ia_gid, inode->i_gid)); (ia->ia_valid & ATTR_GID && !gid_eq(ia->ia_gid, inode->i_gid));
} }