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-rw-r--r--fs/ext4/balloc.c19
-rw-r--r--fs/ext4/dir.c8
-rw-r--r--fs/ext4/ext4.h17
-rw-r--r--fs/ext4/ext4_jbd2.c7
-rw-r--r--fs/ext4/extents.c23
-rw-r--r--fs/ext4/ialloc.c54
-rw-r--r--fs/ext4/inode.c42
-rw-r--r--fs/ext4/ioctl.c13
-rw-r--r--fs/ext4/move_extent.c4
-rw-r--r--fs/ext4/super.c65
-rw-r--r--fs/ext4/sysfs.c72
-rw-r--r--fs/ext4/xattr.c121
-rw-r--r--fs/ext4/xattr.h11
13 files changed, 201 insertions, 255 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index f9b3e0a83526..a33d8fb1bf2a 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -243,8 +243,6 @@ static int ext4_init_block_bitmap(struct super_block *sb,
*/
ext4_mark_bitmap_end(num_clusters_in_group(sb, block_group),
sb->s_blocksize * 8, bh->b_data);
- ext4_block_bitmap_csum_set(sb, block_group, gdp, bh);
- ext4_group_desc_csum_set(sb, block_group, gdp);
return 0;
}
@@ -340,20 +338,25 @@ static ext4_fsblk_t ext4_valid_block_bitmap(struct super_block *sb,
/* check whether block bitmap block number is set */
blk = ext4_block_bitmap(sb, desc);
offset = blk - group_first_block;
- if (!ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
+ if (offset < 0 || EXT4_B2C(sbi, offset) >= sb->s_blocksize ||
+ !ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
/* bad block bitmap */
return blk;
/* check whether the inode bitmap block number is set */
blk = ext4_inode_bitmap(sb, desc);
offset = blk - group_first_block;
- if (!ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
+ if (offset < 0 || EXT4_B2C(sbi, offset) >= sb->s_blocksize ||
+ !ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
/* bad block bitmap */
return blk;
/* check whether the inode table block number is set */
blk = ext4_inode_table(sb, desc);
offset = blk - group_first_block;
+ if (offset < 0 || EXT4_B2C(sbi, offset) >= sb->s_blocksize ||
+ EXT4_B2C(sbi, offset + sbi->s_itb_per_group) >= sb->s_blocksize)
+ return blk;
next_zero_bit = ext4_find_next_zero_bit(bh->b_data,
EXT4_B2C(sbi, offset + sbi->s_itb_per_group),
EXT4_B2C(sbi, offset));
@@ -419,6 +422,7 @@ struct buffer_head *
ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group)
{
struct ext4_group_desc *desc;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
struct buffer_head *bh;
ext4_fsblk_t bitmap_blk;
int err;
@@ -427,6 +431,12 @@ ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group)
if (!desc)
return ERR_PTR(-EFSCORRUPTED);
bitmap_blk = ext4_block_bitmap(sb, desc);
+ if ((bitmap_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
+ (bitmap_blk >= ext4_blocks_count(sbi->s_es))) {
+ ext4_error(sb, "Invalid block bitmap block %llu in "
+ "block_group %u", bitmap_blk, block_group);
+ return ERR_PTR(-EFSCORRUPTED);
+ }
bh = sb_getblk(sb, bitmap_blk);
if (unlikely(!bh)) {
ext4_error(sb, "Cannot get buffer for block bitmap - "
@@ -448,6 +458,7 @@ ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group)
err = ext4_init_block_bitmap(sb, bh, block_group, desc);
set_bitmap_uptodate(bh);
set_buffer_uptodate(bh);
+ set_buffer_verified(bh);
ext4_unlock_group(sb, block_group);
unlock_buffer(bh);
if (err) {
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index da87cf757f7d..e2902d394f1b 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -365,13 +365,15 @@ static loff_t ext4_dir_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
int dx_dir = is_dx_dir(inode);
- loff_t htree_max = ext4_get_htree_eof(file);
+ loff_t ret, htree_max = ext4_get_htree_eof(file);
if (likely(dx_dir))
- return generic_file_llseek_size(file, offset, whence,
+ ret = generic_file_llseek_size(file, offset, whence,
htree_max, htree_max);
else
- return ext4_llseek(file, offset, whence);
+ ret = ext4_llseek(file, offset, whence);
+ file->f_version = inode_peek_iversion(inode) - 1;
+ return ret;
}
/*
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 3241475a1733..a42e71203e53 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1522,8 +1522,6 @@ enum {
EXT4_STATE_EXT_MIGRATE, /* Inode is migrating */
EXT4_STATE_DIO_UNWRITTEN, /* need convert on dio done*/
EXT4_STATE_NEWENTRY, /* File just added to dir */
- EXT4_STATE_DIOREAD_LOCK, /* Disable support for dio read
- nolocking */
EXT4_STATE_MAY_INLINE_DATA, /* may have in-inode data */
EXT4_STATE_EXT_PRECACHED, /* extents have been precached */
EXT4_STATE_LUSTRE_EA_INODE, /* Lustre-style ea_inode */
@@ -3181,21 +3179,6 @@ static inline void set_bitmap_uptodate(struct buffer_head *bh)
set_bit(BH_BITMAP_UPTODATE, &(bh)->b_state);
}
-/*
- * Disable DIO read nolock optimization, so new dioreaders will be forced
- * to grab i_mutex
- */
-static inline void ext4_inode_block_unlocked_dio(struct inode *inode)
-{
- ext4_set_inode_state(inode, EXT4_STATE_DIOREAD_LOCK);
- smp_mb();
-}
-static inline void ext4_inode_resume_unlocked_dio(struct inode *inode)
-{
- smp_mb();
- ext4_clear_inode_state(inode, EXT4_STATE_DIOREAD_LOCK);
-}
-
#define in_range(b, first, len) ((b) >= (first) && (b) <= (first) + (len) - 1)
/* For ioend & aio unwritten conversion wait queues */
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index 2d593201cf7a..7c70b08d104c 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -166,13 +166,6 @@ int __ext4_journal_get_write_access(const char *where, unsigned int line,
might_sleep();
if (ext4_handle_valid(handle)) {
- struct super_block *sb;
-
- sb = handle->h_transaction->t_journal->j_private;
- if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) {
- jbd2_journal_abort_handle(handle);
- return -EIO;
- }
err = jbd2_journal_get_write_access(handle, bh);
if (err)
ext4_journal_abort_handle(where, line, __func__, bh,
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 054416e9d827..0a7315961bac 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4796,7 +4796,6 @@ static long ext4_zero_range(struct file *file, loff_t offset,
flags |= EXT4_GET_BLOCKS_KEEP_SIZE;
/* Wait all existing dio workers, newcomers will block on i_mutex */
- ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
/* Preallocate the range including the unaligned edges */
@@ -4807,7 +4806,7 @@ static long ext4_zero_range(struct file *file, loff_t offset,
round_down(offset, 1 << blkbits)) >> blkbits,
new_size, flags);
if (ret)
- goto out_dio;
+ goto out_mutex;
}
@@ -4824,7 +4823,7 @@ static long ext4_zero_range(struct file *file, loff_t offset,
ret = ext4_update_disksize_before_punch(inode, offset, len);
if (ret) {
up_write(&EXT4_I(inode)->i_mmap_sem);
- goto out_dio;
+ goto out_mutex;
}
/* Now release the pages and zero block aligned part of pages */
truncate_pagecache_range(inode, start, end - 1);
@@ -4834,10 +4833,10 @@ static long ext4_zero_range(struct file *file, loff_t offset,
flags);
up_write(&EXT4_I(inode)->i_mmap_sem);
if (ret)
- goto out_dio;
+ goto out_mutex;
}
if (!partial_begin && !partial_end)
- goto out_dio;
+ goto out_mutex;
/*
* In worst case we have to writeout two nonadjacent unwritten
@@ -4850,7 +4849,7 @@ static long ext4_zero_range(struct file *file, loff_t offset,
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
ext4_std_error(inode->i_sb, ret);
- goto out_dio;
+ goto out_mutex;
}
inode->i_mtime = inode->i_ctime = current_time(inode);
@@ -4875,8 +4874,6 @@ static long ext4_zero_range(struct file *file, loff_t offset,
ext4_handle_sync(handle);
ext4_journal_stop(handle);
-out_dio:
- ext4_inode_resume_unlocked_dio(inode);
out_mutex:
inode_unlock(inode);
return ret;
@@ -4964,11 +4961,9 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
}
/* Wait all existing dio workers, newcomers will block on i_mutex */
- ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size, flags);
- ext4_inode_resume_unlocked_dio(inode);
if (ret)
goto out;
@@ -5485,7 +5480,6 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
}
/* Wait for existing dio to complete */
- ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
/*
@@ -5562,7 +5556,6 @@ out_stop:
ext4_journal_stop(handle);
out_mmap:
up_write(&EXT4_I(inode)->i_mmap_sem);
- ext4_inode_resume_unlocked_dio(inode);
out_mutex:
inode_unlock(inode);
return ret;
@@ -5635,7 +5628,6 @@ int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len)
}
/* Wait for existing dio to complete */
- ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
/*
@@ -5737,7 +5729,6 @@ out_stop:
ext4_journal_stop(handle);
out_mmap:
up_write(&EXT4_I(inode)->i_mmap_sem);
- ext4_inode_resume_unlocked_dio(inode);
out_mutex:
inode_unlock(inode);
return ret;
@@ -5751,7 +5742,7 @@ out_mutex:
* @lblk1: Start block for first inode
* @lblk2: Start block for second inode
* @count: Number of blocks to swap
- * @mark_unwritten: Mark second inode's extents as unwritten after swap
+ * @unwritten: Mark second inode's extents as unwritten after swap
* @erp: Pointer to save error value
*
* This helper routine does exactly what is promise "swap extents". All other
@@ -5765,7 +5756,7 @@ out_mutex:
*/
int
ext4_swap_extents(handle_t *handle, struct inode *inode1,
- struct inode *inode2, ext4_lblk_t lblk1, ext4_lblk_t lblk2,
+ struct inode *inode2, ext4_lblk_t lblk1, ext4_lblk_t lblk2,
ext4_lblk_t count, int unwritten, int *erp)
{
struct ext4_ext_path *path1 = NULL;
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 7830d28df331..df92e3ec9913 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -66,44 +66,6 @@ void ext4_mark_bitmap_end(int start_bit, int end_bit, char *bitmap)
memset(bitmap + (i >> 3), 0xff, (end_bit - i) >> 3);
}
-/* Initializes an uninitialized inode bitmap */
-static int ext4_init_inode_bitmap(struct super_block *sb,
- struct buffer_head *bh,
- ext4_group_t block_group,
- struct ext4_group_desc *gdp)
-{
- struct ext4_group_info *grp;
- struct ext4_sb_info *sbi = EXT4_SB(sb);
- J_ASSERT_BH(bh, buffer_locked(bh));
-
- /* If checksum is bad mark all blocks and inodes use to prevent
- * allocation, essentially implementing a per-group read-only flag. */
- if (!ext4_group_desc_csum_verify(sb, block_group, gdp)) {
- grp = ext4_get_group_info(sb, block_group);
- if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
- percpu_counter_sub(&sbi->s_freeclusters_counter,
- grp->bb_free);
- set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
- if (!EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) {
- int count;
- count = ext4_free_inodes_count(sb, gdp);
- percpu_counter_sub(&sbi->s_freeinodes_counter,
- count);
- }
- set_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT, &grp->bb_state);
- return -EFSBADCRC;
- }
-
- memset(bh->b_data, 0, (EXT4_INODES_PER_GROUP(sb) + 7) / 8);
- ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), sb->s_blocksize * 8,
- bh->b_data);
- ext4_inode_bitmap_csum_set(sb, block_group, gdp, bh,
- EXT4_INODES_PER_GROUP(sb) / 8);
- ext4_group_desc_csum_set(sb, block_group, gdp);
-
- return 0;
-}
-
void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate)
{
if (uptodate) {
@@ -160,6 +122,7 @@ static struct buffer_head *
ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
{
struct ext4_group_desc *desc;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
struct buffer_head *bh = NULL;
ext4_fsblk_t bitmap_blk;
int err;
@@ -169,6 +132,12 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
return ERR_PTR(-EFSCORRUPTED);
bitmap_blk = ext4_inode_bitmap(sb, desc);
+ if ((bitmap_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
+ (bitmap_blk >= ext4_blocks_count(sbi->s_es))) {
+ ext4_error(sb, "Invalid inode bitmap blk %llu in "
+ "block_group %u", bitmap_blk, block_group);
+ return ERR_PTR(-EFSCORRUPTED);
+ }
bh = sb_getblk(sb, bitmap_blk);
if (unlikely(!bh)) {
ext4_error(sb, "Cannot read inode bitmap - "
@@ -187,17 +156,14 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
ext4_lock_group(sb, block_group);
if (desc->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) {
- err = ext4_init_inode_bitmap(sb, bh, block_group, desc);
+ memset(bh->b_data, 0, (EXT4_INODES_PER_GROUP(sb) + 7) / 8);
+ ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb),
+ sb->s_blocksize * 8, bh->b_data);
set_bitmap_uptodate(bh);
set_buffer_uptodate(bh);
set_buffer_verified(bh);
ext4_unlock_group(sb, block_group);
unlock_buffer(bh);
- if (err) {
- ext4_error(sb, "Failed to init inode bitmap for group "
- "%u: %d", block_group, err);
- goto out;
- }
return bh;
}
ext4_unlock_group(sb, block_group);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 6d2a18991fcb..129205028300 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2694,15 +2694,6 @@ out:
return err;
}
-static int __writepage(struct page *page, struct writeback_control *wbc,
- void *data)
-{
- struct address_space *mapping = data;
- int ret = ext4_writepage(page, wbc);
- mapping_set_error(mapping, ret);
- return ret;
-}
-
static int ext4_writepages(struct address_space *mapping,
struct writeback_control *wbc)
{
@@ -2740,11 +2731,7 @@ static int ext4_writepages(struct address_space *mapping,
goto out_writepages;
if (ext4_should_journal_data(inode)) {
- struct blk_plug plug;
-
- blk_start_plug(&plug);
- ret = write_cache_pages(mapping, wbc, __writepage, mapping);
- blk_finish_plug(&plug);
+ ret = generic_writepages(mapping, wbc);
goto out_writepages;
}
@@ -3524,7 +3511,7 @@ retry:
iomap->flags |= IOMAP_F_DIRTY;
iomap->bdev = inode->i_sb->s_bdev;
iomap->dax_dev = sbi->s_daxdev;
- iomap->offset = first_block << blkbits;
+ iomap->offset = (u64)first_block << blkbits;
iomap->length = (u64)map.m_len << blkbits;
if (ret == 0) {
@@ -3669,7 +3656,7 @@ static ssize_t ext4_direct_IO_write(struct kiocb *iocb, struct iov_iter *iter)
int orphan = 0;
handle_t *handle;
- if (final_size > inode->i_size) {
+ if (final_size > inode->i_size || final_size > ei->i_disksize) {
/* Credits for sb + inode write */
handle = ext4_journal_start(inode, EXT4_HT_INODE, 2);
if (IS_ERR(handle)) {
@@ -3682,7 +3669,7 @@ static ssize_t ext4_direct_IO_write(struct kiocb *iocb, struct iov_iter *iter)
goto out;
}
orphan = 1;
- ei->i_disksize = inode->i_size;
+ ext4_update_i_disksize(inode, inode->i_size);
ext4_journal_stop(handle);
}
@@ -3789,9 +3776,10 @@ static ssize_t ext4_direct_IO_write(struct kiocb *iocb, struct iov_iter *iter)
ext4_orphan_del(handle, inode);
if (ret > 0) {
loff_t end = offset + ret;
- if (end > inode->i_size) {
- ei->i_disksize = end;
- i_size_write(inode, end);
+ if (end > inode->i_size || end > ei->i_disksize) {
+ ext4_update_i_disksize(inode, end);
+ if (end > inode->i_size)
+ i_size_write(inode, end);
/*
* We're going to return a positive `ret'
* here due to non-zero-length I/O, so there's
@@ -4251,7 +4239,6 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
}
/* Wait all existing dio workers, newcomers will block on i_mutex */
- ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
/*
@@ -4324,7 +4311,6 @@ out_stop:
ext4_journal_stop(handle);
out_dio:
up_write(&EXT4_I(inode)->i_mmap_sem);
- ext4_inode_resume_unlocked_dio(inode);
out_mutex:
inode_unlock(inode);
return ret;
@@ -4746,6 +4732,12 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
goto bad_inode;
raw_inode = ext4_raw_inode(&iloc);
+ if ((ino == EXT4_ROOT_INO) && (raw_inode->i_links_count == 0)) {
+ EXT4_ERROR_INODE(inode, "root inode unallocated");
+ ret = -EFSCORRUPTED;
+ goto bad_inode;
+ }
+
if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE) {
ei->i_extra_isize = le16_to_cpu(raw_inode->i_extra_isize);
if (EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize >
@@ -5506,9 +5498,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
*/
if (orphan) {
if (!ext4_should_journal_data(inode)) {
- ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
- ext4_inode_resume_unlocked_dio(inode);
} else
ext4_wait_for_tail_page_commit(inode);
}
@@ -5999,7 +5989,6 @@ int ext4_change_inode_journal_flag(struct inode *inode, int val)
return -EROFS;
/* Wait for all existing dio workers */
- ext4_inode_block_unlocked_dio(inode);
inode_dio_wait(inode);
/*
@@ -6015,7 +6004,6 @@ int ext4_change_inode_journal_flag(struct inode *inode, int val)
err = filemap_write_and_wait(inode->i_mapping);
if (err < 0) {
up_write(&EXT4_I(inode)->i_mmap_sem);
- ext4_inode_resume_unlocked_dio(inode);
return err;
}
}
@@ -6038,7 +6026,6 @@ int ext4_change_inode_journal_flag(struct inode *inode, int val)
if (err < 0) {
jbd2_journal_unlock_updates(journal);
percpu_up_write(&sbi->s_journal_flag_rwsem);
- ext4_inode_resume_unlocked_dio(inode);
return err;
}
ext4_clear_inode_flag(inode, EXT4_INODE_JOURNAL_DATA);
@@ -6050,7 +6037,6 @@ int ext4_change_inode_journal_flag(struct inode *inode, int val)
if (val)
up_write(&EXT4_I(inode)->i_mmap_sem);
- ext4_inode_resume_unlocked_dio(inode);
/* Finally we can mark the inode as dirty. */
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 7e99ad02f1ba..a7074115d6f6 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -124,8 +124,6 @@ static long swap_inode_boot_loader(struct super_block *sb,
truncate_inode_pages(&inode_bl->i_data, 0);
/* Wait for all existing dio workers */
- ext4_inode_block_unlocked_dio(inode);
- ext4_inode_block_unlocked_dio(inode_bl);
inode_dio_wait(inode);
inode_dio_wait(inode_bl);
@@ -186,8 +184,6 @@ static long swap_inode_boot_loader(struct super_block *sb,
ext4_double_up_write_data_sem(inode, inode_bl);
journal_err_out:
- ext4_inode_resume_unlocked_dio(inode);
- ext4_inode_resume_unlocked_dio(inode_bl);
unlock_two_nondirectories(inode, inode_bl);
iput(inode_bl);
return err;
@@ -481,6 +477,7 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg)
return 0;
ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags);
+ trace_ext4_shutdown(sb, flags);
switch (flags) {
case EXT4_GOING_FLAGS_DEFAULT:
@@ -492,15 +489,13 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg)
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) {
(void) ext4_force_commit(sb);
- jbd2_journal_abort(sbi->s_journal, 0);
+ jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN);
}
break;
case EXT4_GOING_FLAGS_NOLOGFLUSH:
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
- if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) {
- msleep(100);
- jbd2_journal_abort(sbi->s_journal, 0);
- }
+ if (sbi->s_journal && !is_journal_aborted(sbi->s_journal))
+ jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN);
break;
default:
return -EINVAL;
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index b96e4bd3b3ec..8e17efdcbf11 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -601,8 +601,6 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 orig_blk,
lock_two_nondirectories(orig_inode, donor_inode);
/* Wait for all existing dio workers */
- ext4_inode_block_unlocked_dio(orig_inode);
- ext4_inode_block_unlocked_dio(donor_inode);
inode_dio_wait(orig_inode);
inode_dio_wait(donor_inode);
@@ -693,8 +691,6 @@ out:
ext4_ext_drop_refs(path);
kfree(path);
ext4_double_up_write_data_sem(orig_inode, donor_inode);
- ext4_inode_resume_unlocked_dio(orig_inode);
- ext4_inode_resume_unlocked_dio(donor_inode);
unlock_two_nondirectories(orig_inode, donor_inode);
return ret;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 39bf464c35f1..185f7e61f4cf 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -101,15 +101,13 @@ static struct inode *ext4_get_journal_inode(struct super_block *sb,
* i_data_sem (rw)
*
* truncate:
- * sb_start_write -> i_mutex -> EXT4_STATE_DIOREAD_LOCK (w) -> i_mmap_sem (w) ->
- * i_mmap_rwsem (w) -> page lock
- * sb_start_write -> i_mutex -> EXT4_STATE_DIOREAD_LOCK (w) -> i_mmap_sem (w) ->
- * transaction start -> i_data_sem (rw)
+ * sb_start_write -> i_mutex -> i_mmap_sem (w) -> i_mmap_rwsem (w) -> page lock
+ * sb_start_write -> i_mutex -> i_mmap_sem (w) -> transaction start ->
+ * i_data_sem (rw)
*
* direct IO:
- * sb_start_write -> i_mutex -> EXT4_STATE_DIOREAD_LOCK (r) -> mmap_sem
- * sb_start_write -> i_mutex -> EXT4_STATE_DIOREAD_LOCK (r) ->
- * transaction start -> i_data_sem (rw)
+ * sb_start_write -> i_mutex -> mmap_sem
+ * sb_start_write -> i_mutex -> transaction start -> i_data_sem (rw)
*
* writepages:
* transaction start -> page lock(s) -> i_data_sem (rw)
@@ -448,6 +446,7 @@ void __ext4_error(struct super_block *sb, const char *function,
if (unlikely(ext4_forced_shutdown(EXT4_SB(sb))))
return;
+ trace_ext4_error(sb, function, line);
if (ext4_error_ratelimit(sb)) {
va_start(args, fmt);
vaf.fmt = fmt;
@@ -472,6 +471,7 @@ void __ext4_error_inode(struct inode *inode, const char *function,
if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
return;
+ trace_ext4_error(inode->i_sb, function, line);
es->s_last_error_ino = cpu_to_le32(inode->i_ino);
es->s_last_error_block = cpu_to_le64(block);
if (ext4_error_ratelimit(inode->i_sb)) {
@@ -507,6 +507,7 @@ void __ext4_error_file(struct file *file, const char *function,
if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
return;
+ trace_ext4_error(inode->i_sb, function, line);
es = EXT4_SB(inode->i_sb)->s_es;
es->s_last_error_ino = cpu_to_le32(inode->i_ino);
if (ext4_error_ratelimit(inode->i_sb)) {
@@ -719,6 +720,7 @@ __acquires(bitlock)
if (unlikely(ext4_forced_shutdown(EXT4_SB(sb))))
return;
+ trace_ext4_error(sb, function, line);
es->s_last_error_ino = cpu_to_le32(ino);
es->s_last_error_block = cpu_to_le64(block);
__save_error_info(sb, function, line);
@@ -2019,7 +2021,7 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
- int def_errors, def_mount_opt = nodefs ? 0 : sbi->s_def_mount_opt;
+ int def_errors, def_mount_opt = sbi->s_def_mount_opt;
const struct mount_opts *m;
char sep = nodefs ? '\n' : ',';
@@ -2034,7 +2036,7 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
if (((m->flags & (MOPT_SET|MOPT_CLEAR)) == 0) ||
(m->flags & MOPT_CLEAR_ERR))
continue;
- if (!(m->mount_opt & (sbi->s_mount_opt ^ def_mount_opt)))
+ if (!nodefs && !(m->mount_opt & (sbi->s_mount_opt ^ def_mount_opt)))
continue; /* skip if same as the default */
if ((want_set &&
(sbi->s_mount_opt & m->mount_opt) != m->mount_opt) ||
@@ -2068,7 +2070,8 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
SEQ_OPTS_PUTS("i_version");
if (nodefs || sbi->s_stripe)
SEQ_OPTS_PRINT("stripe=%lu", sbi->s_stripe);
- if (EXT4_MOUNT_DATA_FLAGS & (sbi->s_mount_opt ^ def_mount_opt)) {
+ if (nodefs || EXT4_MOUNT_DATA_FLAGS &
+ (sbi->s_mount_opt ^ def_mount_opt)) {
if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
SEQ_OPTS_PUTS("data=journal");
else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
@@ -2081,7 +2084,7 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
SEQ_OPTS_PRINT("inode_readahead_blks=%u",
sbi->s_inode_readahead_blks);
- if (nodefs || (test_opt(sb, INIT_INODE_TABLE) &&
+ if (test_opt(sb, INIT_INODE_TABLE) && (nodefs ||
(sbi->s_li_wait_mult != EXT4_DEF_LI_WAIT_MULT)))
SEQ_OPTS_PRINT("init_itable=%u", sbi->s_li_wait_mult);
if (nodefs || sbi->s_max_dir_size_kb)
@@ -2333,6 +2336,8 @@ static int ext4_check_descriptors(struct super_block *sb,
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Block bitmap for group %u overlaps "
"superblock", i);
+ if (!sb_rdonly(sb))
+ return 0;
}
if (block_bitmap < first_block || block_bitmap > last_block) {
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
@@ -2345,6 +2350,8 @@ static int ext4_check_descriptors(struct super_block *sb,
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Inode bitmap for group %u overlaps "
"superblock", i);
+ if (!sb_rdonly(sb))
+ return 0;
}
if (inode_bitmap < first_block || inode_bitmap > last_block) {
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
@@ -2357,6 +2364,8 @@ static int ext4_check_descriptors(struct super_block *sb,
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Inode table for group %u overlaps "
"superblock", i);
+ if (!sb_rdonly(sb))
+ return 0;
}
if (inode_table < first_block ||
inode_table + sbi->s_itb_per_group - 1 > last_block) {
@@ -3490,15 +3499,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
}
/* Load the checksum driver */
- if (ext4_has_feature_metadata_csum(sb) ||
- ext4_has_feature_ea_inode(sb)) {
- sbi->s_chksum_driver = crypto_alloc_shash("crc32c", 0, 0);
- if (IS_ERR(sbi->s_chksum_driver)) {
- ext4_msg(sb, KERN_ERR, "Cannot load crc32c driver.");
- ret = PTR_ERR(sbi->s_chksum_driver);
- sbi->s_chksum_driver = NULL;
- goto failed_mount;
- }
+ sbi->s_chksum_driver = crypto_alloc_shash("crc32c", 0, 0);
+ if (IS_ERR(sbi->s_chksum_driver)) {
+ ext4_msg(sb, KERN_ERR, "Cannot load crc32c driver.");
+ ret = PTR_ERR(sbi->s_chksum_driver);
+ sbi->s_chksum_driver = NULL;
+ goto failed_mount;
}
/* Check superblock checksum */
@@ -3660,6 +3666,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
ext4_msg(sb, KERN_INFO, "mounting ext2 file system "
"using the ext4 subsystem");
else {
+ /*
+ * If we're probing be silent, if this looks like
+ * it's actually an ext[34] filesystem.
+ */
+ if (silent && ext4_feature_set_ok(sb, sb_rdonly(sb)))
+ goto failed_mount;
ext4_msg(sb, KERN_ERR, "couldn't mount as ext2 due "
"to feature incompatibilities");
goto failed_mount;
@@ -3671,6 +3683,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
ext4_msg(sb, KERN_INFO, "mounting ext3 file system "
"using the ext4 subsystem");
else {
+ /*
+ * If we're probing be silent, if this looks like
+ * it's actually an ext4 filesystem.
+ */
+ if (silent && ext4_feature_set_ok(sb, sb_rdonly(sb)))
+ goto failed_mount;
ext4_msg(sb, KERN_ERR, "couldn't mount as ext3 due "
"to feature incompatibilities");
goto failed_mount;
@@ -4094,10 +4112,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
* cope, else JOURNAL_DATA
*/
if (jbd2_journal_check_available_features
- (sbi->s_journal, 0, 0, JBD2_FEATURE_INCOMPAT_REVOKE))
+ (sbi->s_journal, 0, 0, JBD2_FEATURE_INCOMPAT_REVOKE)) {
set_opt(sb, ORDERED_DATA);
- else
+ sbi->s_def_mount_opt |= EXT4_MOUNT_ORDERED_DATA;
+ } else {
set_opt(sb, JOURNAL_DATA);
+ sbi->s_def_mount_opt |= EXT4_MOUNT_JOURNAL_DATA;
+ }
break;
case EXT4_MOUNT_ORDERED_DATA:
diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c
index 1205261f130c..9ebd26c957c2 100644
--- a/fs/ext4/sysfs.c
+++ b/fs/ext4/sysfs.c
@@ -49,8 +49,7 @@ struct ext4_attr {
} u;
};
-static ssize_t session_write_kbytes_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi, char *buf)
+static ssize_t session_write_kbytes_show(struct ext4_sb_info *sbi, char *buf)
{
struct super_block *sb = sbi->s_buddy_cache->i_sb;
@@ -61,8 +60,7 @@ static ssize_t session_write_kbytes_show(struct ext4_attr *a,
sbi->s_sectors_written_start) >> 1);
}
-static ssize_t lifetime_write_kbytes_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi, char *buf)
+static ssize_t lifetime_write_kbytes_show(struct ext4_sb_info *sbi, char *buf)
{
struct super_block *sb = sbi->s_buddy_cache->i_sb;
@@ -74,8 +72,7 @@ static ssize_t lifetime_write_kbytes_show(struct ext4_attr *a,
EXT4_SB(sb)->s_sectors_written_start) >> 1)));
}
-static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
- struct ext4_sb_info *sbi,
+static ssize_t inode_readahead_blks_store(struct ext4_sb_info *sbi,
const char *buf, size_t count)
{
unsigned long t;
@@ -92,8 +89,7 @@ static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
return count;
}
-static ssize_t reserved_clusters_store(struct ext4_attr *a,
- struct ext4_sb_info *sbi,
+static ssize_t reserved_clusters_store(struct ext4_sb_info *sbi,
const char *buf, size_t count)
{
unsigned long long val;
@@ -109,8 +105,7 @@ static ssize_t reserved_clusters_store(struct ext4_attr *a,
return count;
}
-static ssize_t trigger_test_error(struct ext4_attr *a,
- struct ext4_sb_info *sbi,
+static ssize_t trigger_test_error(struct ext4_sb_info *sbi,
const char *buf, size_t count)
{
int len = count;
@@ -268,9 +263,9 @@ static ssize_t ext4_attr_show(struct kobject *kobj,
(s64) EXT4_C2B(sbi,
percpu_counter_sum(&sbi->s_dirtyclusters_counter)));
case attr_session_write_kbytes:
- return session_write_kbytes_show(a, sbi, buf);
+ return session_write_kbytes_show(sbi, buf);
case attr_lifetime_write_kbytes:
- return lifetime_write_kbytes_show(a, sbi, buf);
+ return lifetime_write_kbytes_show(sbi, buf);
case attr_reserved_clusters:
return snprintf(buf, PAGE_SIZE, "%llu\n",
(unsigned long long)
@@ -306,7 +301,7 @@ static ssize_t ext4_attr_store(struct kobject *kobj,
switch (a->attr_id) {
case attr_reserved_clusters:
- return reserved_clusters_store(a, sbi, buf, len);
+ return reserved_clusters_store(sbi, buf, len);
case attr_pointer_ui:
if (!ptr)
return 0;
@@ -316,9 +311,9 @@ static ssize_t ext4_attr_store(struct kobject *kobj,
*((unsigned int *) ptr) = t;
return len;
case attr_inode_readahead:
- return inode_readahead_blks_store(a, sbi, buf, len);
+ return inode_readahead_blks_store(sbi, buf, len);
case attr_trigger_test_error:
- return trigger_test_error(a, sbi, buf, len);
+ return trigger_test_error(sbi, buf, len);
}
return 0;
}
@@ -330,13 +325,6 @@ static void ext4_sb_release(struct kobject *kobj)
complete(&sbi->s_kobj_unregister);
}
-static void ext4_kset_release(struct kobject *kobj)
-{
- struct kset *kset = container_of(kobj, struct kset, kobj);
-
- kfree(kset);
-}
-
static const struct sysfs_ops ext4_attr_ops = {
.show = ext4_attr_show,
.store = ext4_attr_store,
@@ -348,19 +336,14 @@ static struct kobj_type ext4_sb_ktype = {
.release = ext4_sb_release,
};
-static struct kobj_type ext4_ktype = {
- .sysfs_ops = &ext4_attr_ops,
- .release = ext4_kset_release,
-};
-
-static struct kset *ext4_kset;
-
static struct kobj_type ext4_feat_ktype = {
.default_attrs = ext4_feat_attrs,
.sysfs_ops = &ext4_attr_ops,
.release = (void (*)(struct kobject *))kfree,
};
+static struct kobject *ext4_root;
+
static struct kobject *ext4_feat;
#define PROC_FILE_SHOW_DEFN(name) \
@@ -398,9 +381,8 @@ int ext4_register_sysfs(struct super_block *sb)
const struct ext4_proc_files *p;
int err;
- sbi->s_kobj.kset = ext4_kset;
init_completion(&sbi->s_kobj_unregister);
- err = kobject_init_and_add(&sbi->s_kobj, &ext4_sb_ktype, NULL,
+ err = kobject_init_and_add(&sbi->s_kobj, &ext4_sb_ktype, ext4_root,
"%s", sb->s_id);
if (err) {
kobject_put(&sbi->s_kobj);
@@ -436,26 +418,18 @@ int __init ext4_init_sysfs(void)
{
int ret;
- ext4_kset = kzalloc(sizeof(*ext4_kset), GFP_KERNEL);
- if (!ext4_kset)
+ ext4_root = kobject_create_and_add("ext4", fs_kobj);
+ if (!ext4_root)
return -ENOMEM;
- kobject_set_name(&ext4_kset->kobj, "ext4");
- ext4_kset->kobj.parent = fs_kobj;
- ext4_kset->kobj.ktype = &ext4_ktype;
- ret = kset_register(ext4_kset);
- if (ret)
- goto kset_err;
-
ext4_feat = kzalloc(sizeof(*ext4_feat), GFP_KERNEL);
if (!ext4_feat) {
ret = -ENOMEM;
- goto kset_err;
+ goto root_err;
}
- ext4_feat->kset = ext4_kset;
ret = kobject_init_and_add(ext4_feat, &ext4_feat_ktype,
- NULL, "features");
+ ext4_root, "features");
if (ret)
goto feat_err;
@@ -464,17 +438,19 @@ int __init ext4_init_sysfs(void)
feat_err:
kobject_put(ext4_feat);
-kset_err:
- kset_unregister(ext4_kset);
- ext4_kset = NULL;
+ ext4_feat = NULL;
+root_err:
+ kobject_put(ext4_root);
+ ext4_root = NULL;
return ret;
}
void ext4_exit_sysfs(void)
{
kobject_put(ext4_feat);
- kset_unregister(ext4_kset);
- ext4_kset = NULL;
+ ext4_feat = NULL;
+ kobject_put(ext4_root);
+ ext4_root = NULL;
remove_proc_entry(proc_dirname, NULL);
ext4_proc_root = NULL;
}
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 63656dbafdc4..499cb4b1fbd2 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -195,10 +195,13 @@ ext4_xattr_check_entries(struct ext4_xattr_entry *entry, void *end,
/* Check the values */
while (!IS_LAST_ENTRY(entry)) {
- if (entry->e_value_size != 0 &&
- entry->e_value_inum == 0) {
+ u32 size = le32_to_cpu(entry->e_value_size);
+
+ if (size > EXT4_XATTR_SIZE_MAX)
+ return -EFSCORRUPTED;
+
+ if (size != 0 && entry->e_value_inum == 0) {
u16 offs = le16_to_cpu(entry->e_value_offs);
- u32 size = le32_to_cpu(entry->e_value_size);
void *value;
/*
@@ -222,25 +225,36 @@ ext4_xattr_check_entries(struct ext4_xattr_entry *entry, void *end,
}
static inline int
-ext4_xattr_check_block(struct inode *inode, struct buffer_head *bh)
+__ext4_xattr_check_block(struct inode *inode, struct buffer_head *bh,
+ const char *function, unsigned int line)
{
- int error;
+ int error = -EFSCORRUPTED;
if (buffer_verified(bh))
return 0;
if (BHDR(bh)->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC) ||
BHDR(bh)->h_blocks != cpu_to_le32(1))
- return -EFSCORRUPTED;
+ goto errout;
+ error = -EFSBADCRC;
if (!ext4_xattr_block_csum_verify(inode, bh))
- return -EFSBADCRC;
+ goto errout;
error = ext4_xattr_check_entries(BFIRST(bh), bh->b_data + bh->b_size,
bh->b_data);
- if (!error)
+errout:
+ if (error)
+ __ext4_error_inode(inode, function, line, 0,
+ "corrupted xattr block %llu",
+ (unsigned long long) bh->b_blocknr);
+ else
set_buffer_verified(bh);
return error;
}
+#define ext4_xattr_check_block(inode, bh) \
+ __ext4_xattr_check_block((inode), (bh), __func__, __LINE__)
+
+
static int
__xattr_check_inode(struct inode *inode, struct ext4_xattr_ibody_header *header,
void *end, const char *function, unsigned int line)
@@ -262,18 +276,22 @@ errout:
__xattr_check_inode((inode), (header), (end), __func__, __LINE__)
static int
-ext4_xattr_find_entry(struct ext4_xattr_entry **pentry, int name_index,
- const char *name, int sorted)
+xattr_find_entry(struct inode *inode, struct ext4_xattr_entry **pentry,
+ void *end, int name_index, const char *name, int sorted)
{
- struct ext4_xattr_entry *entry;
+ struct ext4_xattr_entry *entry, *next;
size_t name_len;
int cmp = 1;
if (name == NULL)
return -EINVAL;
name_len = strlen(name);
- entry = *pentry;
- for (; !IS_LAST_ENTRY(entry); entry = EXT4_XATTR_NEXT(entry)) {
+ for (entry = *pentry; !IS_LAST_ENTRY(entry); entry = next) {
+ next = EXT4_XATTR_NEXT(entry);
+ if ((void *) next >= end) {
+ EXT4_ERROR_INODE(inode, "corrupted xattr entries");
+ return -EFSCORRUPTED;
+ }
cmp = name_index - entry->e_name_index;
if (!cmp)
cmp = name_len - entry->e_name_len;
@@ -495,6 +513,7 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
struct buffer_head *bh = NULL;
struct ext4_xattr_entry *entry;
size_t size;
+ void *end;
int error;
struct mb_cache *ea_block_cache = EA_BLOCK_CACHE(inode);
@@ -511,20 +530,20 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
goto cleanup;
ea_bdebug(bh, "b_count=%d, refcount=%d",
atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
- if (ext4_xattr_check_block(inode, bh)) {
- EXT4_ERROR_INODE(inode, "bad block %llu",
- EXT4_I(inode)->i_file_acl);
- error = -EFSCORRUPTED;
+ error = ext4_xattr_check_block(inode, bh);
+ if (error)
goto cleanup;
- }
ext4_xattr_block_cache_insert(ea_block_cache, bh);
entry = BFIRST(bh);
- error = ext4_xattr_find_entry(&entry, name_index, name, 1);
+ end = bh->b_data + bh->b_size;
+ error = xattr_find_entry(inode, &entry, end, name_index, name, 1);
if (error)
goto cleanup;
size = le32_to_cpu(entry->e_value_size);
+ error = -ERANGE;
+ if (unlikely(size > EXT4_XATTR_SIZE_MAX))
+ goto cleanup;
if (buffer) {
- error = -ERANGE;
if (size > buffer_size)
goto cleanup;
if (entry->e_value_inum) {
@@ -533,8 +552,12 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
if (error)
goto cleanup;
} else {
- memcpy(buffer, bh->b_data +
- le16_to_cpu(entry->e_value_offs), size);
+ u16 offset = le16_to_cpu(entry->e_value_offs);
+ void *p = bh->b_data + offset;
+
+ if (unlikely(p + size > end))
+ goto cleanup;
+ memcpy(buffer, p, size);
}
}
error = size;
@@ -568,12 +591,14 @@ ext4_xattr_ibody_get(struct inode *inode, int name_index, const char *name,
if (error)
goto cleanup;
entry = IFIRST(header);
- error = ext4_xattr_find_entry(&entry, name_index, name, 0);
+ error = xattr_find_entry(inode, &entry, end, name_index, name, 0);
if (error)
goto cleanup;
size = le32_to_cpu(entry->e_value_size);
+ error = -ERANGE;
+ if (unlikely(size > EXT4_XATTR_SIZE_MAX))
+ goto cleanup;
if (buffer) {
- error = -ERANGE;
if (size > buffer_size)
goto cleanup;
if (entry->e_value_inum) {
@@ -582,8 +607,12 @@ ext4_xattr_ibody_get(struct inode *inode, int name_index, const char *name,
if (error)
goto cleanup;
} else {
- memcpy(buffer, (void *)IFIRST(header) +
- le16_to_cpu(entry->e_value_offs), size);
+ u16 offset = le16_to_cpu(entry->e_value_offs);
+ void *p = (void *)IFIRST(header) + offset;
+
+ if (unlikely(p + size > end))
+ goto cleanup;
+ memcpy(buffer, p, size);
}
}
error = size;
@@ -676,12 +705,9 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size)
goto cleanup;
ea_bdebug(bh, "b_count=%d, refcount=%d",
atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
- if (ext4_xattr_check_block(inode, bh)) {
- EXT4_ERROR_INODE(inode, "bad block %llu",
- EXT4_I(inode)->i_file_acl);
- error = -EFSCORRUPTED;
+ error = ext4_xattr_check_block(inode, bh);
+ if (error)
goto cleanup;
- }
ext4_xattr_block_cache_insert(EA_BLOCK_CACHE(inode), bh);
error = ext4_xattr_list_entries(dentry, BFIRST(bh), buffer, buffer_size);
@@ -808,10 +834,9 @@ int ext4_get_inode_usage(struct inode *inode, qsize_t *usage)
goto out;
}
- if (ext4_xattr_check_block(inode, bh)) {
- ret = -EFSCORRUPTED;
+ ret = ext4_xattr_check_block(inode, bh);
+ if (ret)
goto out;
- }
for (entry = BFIRST(bh); !IS_LAST_ENTRY(entry);
entry = EXT4_XATTR_NEXT(entry))
@@ -1793,19 +1818,16 @@ ext4_xattr_block_find(struct inode *inode, struct ext4_xattr_info *i,
ea_bdebug(bs->bh, "b_count=%d, refcount=%d",
atomic_read(&(bs->bh->b_count)),
le32_to_cpu(BHDR(bs->bh)->h_refcount));
- if (ext4_xattr_check_block(inode, bs->bh)) {
- EXT4_ERROR_INODE(inode, "bad block %llu",
- EXT4_I(inode)->i_file_acl);
- error = -EFSCORRUPTED;
+ error = ext4_xattr_check_block(inode, bs->bh);
+ if (error)
goto cleanup;
- }
/* Find the named attribute. */
bs->s.base = BHDR(bs->bh);
bs->s.first = BFIRST(bs->bh);
bs->s.end = bs->bh->b_data + bs->bh->b_size;
bs->s.here = bs->s.first;
- error = ext4_xattr_find_entry(&bs->s.here, i->name_index,
- i->name, 1);
+ error = xattr_find_entry(inode, &bs->s.here, bs->s.end,
+ i->name_index, i->name, 1);
if (error && error != -ENODATA)
goto cleanup;
bs->s.not_found = error;
@@ -2164,8 +2186,8 @@ int ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
if (error)
return error;
/* Find the named attribute. */
- error = ext4_xattr_find_entry(&is->s.here, i->name_index,
- i->name, 0);
+ error = xattr_find_entry(inode, &is->s.here, is->s.end,
+ i->name_index, i->name, 0);
if (error && error != -ENODATA)
return error;
is->s.not_found = error;
@@ -2721,13 +2743,9 @@ retry:
error = -EIO;
if (!bh)
goto cleanup;
- if (ext4_xattr_check_block(inode, bh)) {
- EXT4_ERROR_INODE(inode, "bad block %llu",
- EXT4_I(inode)->i_file_acl);
- error = -EFSCORRUPTED;
- brelse(bh);
+ error = ext4_xattr_check_block(inode, bh);
+ if (error)
goto cleanup;
- }
base = BHDR(bh);
end = bh->b_data + bh->b_size;
min_offs = end - base;
@@ -2884,11 +2902,8 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode,
goto cleanup;
}
error = ext4_xattr_check_block(inode, bh);
- if (error) {
- EXT4_ERROR_INODE(inode, "bad block %llu (error %d)",
- EXT4_I(inode)->i_file_acl, error);
+ if (error)
goto cleanup;
- }
if (ext4_has_feature_ea_inode(inode->i_sb)) {
for (entry = BFIRST(bh); !IS_LAST_ENTRY(entry);
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index dd54c4f995c8..f39cad2abe2a 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -71,6 +71,17 @@ struct ext4_xattr_entry {
#define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1))
/*
+ * XATTR_SIZE_MAX is currently 64k, but for the purposes of checking
+ * for file system consistency errors, we use a somewhat bigger value.
+ * This allows XATTR_SIZE_MAX to grow in the future, but by using this
+ * instead of INT_MAX for certain consistency checks, we don't need to
+ * worry about arithmetic overflows. (Actually XATTR_SIZE_MAX is
+ * defined in include/uapi/linux/limits.h, so changing it is going
+ * not going to be trivial....)
+ */
+#define EXT4_XATTR_SIZE_MAX (1 << 24)
+
+/*
* The minimum size of EA value when you start storing it in an external inode
* size of block - size of header - size of 1 entry - 4 null bytes
*/
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-03 02:01:38 +0300