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Merge tag 'fs_for_v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull ext2 and udf fixes from Jan Kara:
 "A couple of fixes for udf and ext2. Namely:

   - fix making ext2 mountable (again) with 64k blocksize

   - fix for ext2 statx(2) handling

   - fix for udf handling of corrupted filesystem so that it doesn't get
     corrupted even further

   - couple smaller ext2 and udf cleanups"

* tag 'fs_for_v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Drop pointless check from udf_sync_fs()
  ext2: support statx syscall
  udf: disallow RW mount without valid integrity descriptor
  udf: finalize integrity descriptor before writeback
  udf: factor out LVID finalization for reuse
  ext2: Fix underflow in ext2_max_size()
  ext2: Fix a typo in comment
  ext2: Remove redundant check for finding no group
  ext2: Annotate implicit fall through in __ext2_truncate_blocks
  ext2: Set superblock revision when enabling xattr feature
  ext2: Remove redundant check on s_inode_size
  ext2: set proper return code
hifive-unleashed-5.1
Linus Torvalds 2019-03-07 09:01:33 -08:00
parent b39a07a5e0 52b9666efd
commit a9913f23f3
9 changed files with 98 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
fs/ext2/ext2.h
View File

@ -758,6 +758,7 @@ extern int ext2_write_inode (struct inode *, struct writeback_control *);
extern void ext2_evict_inode(struct inode *);
extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
extern int ext2_setattr (struct dentry *, struct iattr *);
extern int ext2_getattr (const struct path *, struct kstat *, u32, unsigned int);
extern void ext2_set_inode_flags(struct inode *inode);
extern int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len);

1
fs/ext2/file.c
View File

@ -199,6 +199,7 @@ const struct inode_operations ext2_file_inode_operations = {
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,
#endif
.getattr = ext2_getattr,
.setattr = ext2_setattr,
.get_acl = ext2_get_acl,
.set_acl = ext2_set_acl,

2
fs/ext2/ialloc.c
View File

@ -222,8 +222,6 @@ static int find_group_dir(struct super_block *sb, struct inode *parent)
best_desc = desc;
}
}
if (!best_desc)
return -1;
return best_group;
}

30
fs/ext2/inode.c
View File

@ -717,7 +717,7 @@ static int ext2_get_blocks(struct inode *inode,
/* the number of blocks need to allocate for [d,t]indirect blocks */
indirect_blks = (chain + depth) - partial - 1;
/*
* Next look up the indirect map to count the totoal number of
* Next look up the indirect map to count the total number of
* direct blocks to allocate for this branch.
*/
count = ext2_blks_to_allocate(partial, indirect_blks,
@ -1239,6 +1239,7 @@ do_indirects:
mark_inode_dirty(inode);
ext2_free_branches(inode, &nr, &nr+1, 1);
}
/* fall through */
case EXT2_IND_BLOCK:
nr = i_data[EXT2_DIND_BLOCK];
if (nr) {
@ -1246,6 +1247,7 @@ do_indirects:
mark_inode_dirty(inode);
ext2_free_branches(inode, &nr, &nr+1, 2);
}
/* fall through */
case EXT2_DIND_BLOCK:
nr = i_data[EXT2_TIND_BLOCK];
if (nr) {
@ -1635,6 +1637,32 @@ int ext2_write_inode(struct inode *inode, struct writeback_control *wbc)
return __ext2_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
}
int ext2_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int query_falgs)
{
struct inode *inode = d_inode(path->dentry);
struct ext2_inode_info *ei = EXT2_I(inode);
unsigned int flags;
flags = ei->i_flags & EXT2_FL_USER_VISIBLE;
if (flags & EXT2_APPEND_FL)
stat->attributes |= STATX_ATTR_APPEND;
if (flags & EXT2_COMPR_FL)
stat->attributes |= STATX_ATTR_COMPRESSED;
if (flags & EXT2_IMMUTABLE_FL)
stat->attributes |= STATX_ATTR_IMMUTABLE;
if (flags & EXT2_NODUMP_FL)
stat->attributes |= STATX_ATTR_NODUMP;
stat->attributes_mask |= (STATX_ATTR_APPEND |
STATX_ATTR_COMPRESSED |
STATX_ATTR_ENCRYPTED |
STATX_ATTR_IMMUTABLE |
STATX_ATTR_NODUMP);
generic_fillattr(inode, stat);
return 0;
}
int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
{
struct inode *inode = d_inode(dentry);

2
fs/ext2/namei.c
View File

@ -416,6 +416,7 @@ const struct inode_operations ext2_dir_inode_operations = {
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,
#endif
.getattr = ext2_getattr,
.setattr = ext2_setattr,
.get_acl = ext2_get_acl,
.set_acl = ext2_set_acl,
@ -426,6 +427,7 @@ const struct inode_operations ext2_special_inode_operations = {
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,
#endif
.getattr = ext2_getattr,
.setattr = ext2_setattr,
.get_acl = ext2_get_acl,
.set_acl = ext2_set_acl,

46
fs/ext2/super.c
View File

@ -757,7 +757,8 @@ static loff_t ext2_max_size(int bits)
{
loff_t res = EXT2_NDIR_BLOCKS;
int meta_blocks;
loff_t upper_limit;
unsigned int upper_limit;
unsigned int ppb = 1 << (bits-2);
/* This is calculated to be the largest file size for a
* dense, file such that the total number of
@ -771,24 +772,34 @@ static loff_t ext2_max_size(int bits)
/* total blocks in file system block size */
upper_limit >>= (bits - 9);
/* indirect blocks */
meta_blocks = 1;
/* double indirect blocks */
meta_blocks += 1 + (1LL << (bits-2));
/* tripple indirect blocks */
meta_blocks += 1 + (1LL << (bits-2)) + (1LL << (2*(bits-2)));
upper_limit -= meta_blocks;
upper_limit <<= bits;
/* Compute how many blocks we can address by block tree */
res += 1LL << (bits-2);
res += 1LL << (2*(bits-2));
res += 1LL << (3*(bits-2));
res <<= bits;
if (res > upper_limit)
res = upper_limit;
/* Does block tree limit file size? */
if (res < upper_limit)
goto check_lfs;
res = upper_limit;
/* How many metadata blocks are needed for addressing upper_limit? */
upper_limit -= EXT2_NDIR_BLOCKS;
/* indirect blocks */
meta_blocks = 1;
upper_limit -= ppb;
/* double indirect blocks */
if (upper_limit < ppb * ppb) {
meta_blocks += 1 + DIV_ROUND_UP(upper_limit, ppb);
res -= meta_blocks;
goto check_lfs;
}
meta_blocks += 1 + ppb;
upper_limit -= ppb * ppb;
/* tripple indirect blocks for the rest */
meta_blocks += 1 + DIV_ROUND_UP(upper_limit, ppb) +
DIV_ROUND_UP(upper_limit, ppb*ppb);
res -= meta_blocks;
check_lfs:
res <<= bits;
if (res > MAX_LFS_FILESIZE)
res = MAX_LFS_FILESIZE;
@ -1024,8 +1035,6 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_frags_per_group = le32_to_cpu(es->s_frags_per_group);
sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group);
if (EXT2_INODE_SIZE(sb) == 0)
goto cantfind_ext2;
sbi->s_inodes_per_block = sb->s_blocksize / EXT2_INODE_SIZE(sb);
if (sbi->s_inodes_per_block == 0 || sbi->s_inodes_per_group == 0)
goto cantfind_ext2;
@ -1087,12 +1096,14 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
sizeof(struct buffer_head *),
GFP_KERNEL);
if (sbi->s_group_desc == NULL) {
ret = -ENOMEM;
ext2_msg(sb, KERN_ERR, "error: not enough memory");
goto failed_mount;
}
bgl_lock_init(sbi->s_blockgroup_lock);
sbi->s_debts = kcalloc(sbi->s_groups_count, sizeof(*sbi->s_debts), GFP_KERNEL);
if (!sbi->s_debts) {
ret = -ENOMEM;
ext2_msg(sb, KERN_ERR, "error: not enough memory");
goto failed_mount_group_desc;
}
@ -1148,6 +1159,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
#ifdef CONFIG_EXT2_FS_XATTR
sbi->s_ea_block_cache = ext2_xattr_create_cache();
if (!sbi->s_ea_block_cache) {
ret = -ENOMEM;
ext2_msg(sb, KERN_ERR, "Failed to create ea_block_cache");
goto failed_mount3;
}

2
fs/ext2/symlink.c
View File

@ -23,6 +23,7 @@
const struct inode_operations ext2_symlink_inode_operations = {
.get_link = page_get_link,
.getattr = ext2_getattr,
.setattr = ext2_setattr,
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,
@ -31,6 +32,7 @@ const struct inode_operations ext2_symlink_inode_operations = {
const struct inode_operations ext2_fast_symlink_inode_operations = {
.get_link = simple_get_link,
.getattr = ext2_getattr,
.setattr = ext2_setattr,
#ifdef CONFIG_EXT2_FS_XATTR
.listxattr = ext2_listxattr,

1
fs/ext2/xattr.c
View File

@ -342,6 +342,7 @@ static void ext2_xattr_update_super_block(struct super_block *sb)
return;
spin_lock(&EXT2_SB(sb)->s_lock);
ext2_update_dynamic_rev(sb);
EXT2_SET_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR);
spin_unlock(&EXT2_SB(sb)->s_lock);
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);

51
fs/udf/super.c
View File

@ -1474,6 +1474,17 @@ 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;
if (!sbi->s_lvid_bh) {
/* We can't generate unique IDs without a valid LVID */
if (sb_rdonly(sb)) {
UDF_SET_FLAG(sb, UDF_FLAG_RW_INCOMPAT);
} else {
udf_warn(sb, "Damaged or missing LVID, forcing "
"readonly mount\n");
ret = -EACCES;
}
}
out_bh:
brelse(bh);
return ret;
@ -1943,13 +1954,24 @@ static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt,
return 0;
}
static void udf_finalize_lvid(struct logicalVolIntegrityDesc *lvid)
{
struct timespec64 ts;
ktime_get_real_ts64(&ts);
udf_time_to_disk_stamp(&lvid->recordingDateAndTime, ts);
lvid->descTag.descCRC = cpu_to_le16(
crc_itu_t(0, (char *)lvid + sizeof(struct tag),
le16_to_cpu(lvid->descTag.descCRCLength)));
lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
}
static void udf_open_lvid(struct super_block *sb)
{
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = sbi->s_lvid_bh;
struct logicalVolIntegrityDesc *lvid;
struct logicalVolIntegrityDescImpUse *lvidiu;
struct timespec64 ts;
if (!bh)
return;
@ -1961,18 +1983,12 @@ static void udf_open_lvid(struct super_block *sb)
mutex_lock(&sbi->s_alloc_mutex);
lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
ktime_get_real_ts64(&ts);
udf_time_to_disk_stamp(&lvid->recordingDateAndTime, ts);
if (le32_to_cpu(lvid->integrityType) == LVID_INTEGRITY_TYPE_CLOSE)
lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN);
else
UDF_SET_FLAG(sb, UDF_FLAG_INCONSISTENT);
lvid->descTag.descCRC = cpu_to_le16(
crc_itu_t(0, (char *)lvid + sizeof(struct tag),
le16_to_cpu(lvid->descTag.descCRCLength)));
lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
udf_finalize_lvid(lvid);
mark_buffer_dirty(bh);
sbi->s_lvid_dirty = 0;
mutex_unlock(&sbi->s_alloc_mutex);
@ -1986,7 +2002,6 @@ static void udf_close_lvid(struct super_block *sb)
struct buffer_head *bh = sbi->s_lvid_bh;
struct logicalVolIntegrityDesc *lvid;
struct logicalVolIntegrityDescImpUse *lvidiu;
struct timespec64 ts;
if (!bh)
return;
@ -1998,8 +2013,6 @@ static void udf_close_lvid(struct super_block *sb)
mutex_lock(&sbi->s_alloc_mutex);
lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
ktime_get_real_ts64(&ts);
udf_time_to_disk_stamp(&lvid->recordingDateAndTime, ts);
if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
lvidiu->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
@ -2009,17 +2022,13 @@ static void udf_close_lvid(struct super_block *sb)
if (!UDF_QUERY_FLAG(sb, UDF_FLAG_INCONSISTENT))
lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
lvid->descTag.descCRC = cpu_to_le16(
crc_itu_t(0, (char *)lvid + sizeof(struct tag),
le16_to_cpu(lvid->descTag.descCRCLength)));
lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
/*
* We set buffer uptodate unconditionally here to avoid spurious
* warnings from mark_buffer_dirty() when previous EIO has marked
* the buffer as !uptodate
*/
set_buffer_uptodate(bh);
udf_finalize_lvid(lvid);
mark_buffer_dirty(bh);
sbi->s_lvid_dirty = 0;
mutex_unlock(&sbi->s_alloc_mutex);
@ -2048,8 +2057,8 @@ u64 lvid_get_unique_id(struct super_block *sb)
if (!(++uniqueID & 0xFFFFFFFF))
uniqueID += 16;
lvhd->uniqueID = cpu_to_le64(uniqueID);
udf_updated_lvid(sb);
mutex_unlock(&sbi->s_alloc_mutex);
mark_buffer_dirty(bh);
return ret;
}
@ -2320,11 +2329,17 @@ static int udf_sync_fs(struct super_block *sb, int wait)
mutex_lock(&sbi->s_alloc_mutex);
if (sbi->s_lvid_dirty) {
struct buffer_head *bh = sbi->s_lvid_bh;
struct logicalVolIntegrityDesc *lvid;
lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
udf_finalize_lvid(lvid);
/*
* Blockdevice will be synced later so we don't have to submit
* the buffer for IO
*/
mark_buffer_dirty(sbi->s_lvid_bh);
mark_buffer_dirty(bh);
sbi->s_lvid_dirty = 0;
}
mutex_unlock(&sbi->s_alloc_mutex);