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ba6d2377c8
The situation: VFS inode X on a mounted ntfs volume is dirty. For
same inode X, the ntfs_inode is dirty and thus corresponding on-disk
inode, i.e. mft record, which is in a dirty PAGE_CACHE_PAGE belonging
to the table of inodes, i.e. $MFT, inode 0.
What happens:
Process 1: sys_sync()/umount()/whatever... calls
__sync_single_inode() for $MFT -> do_writepages() -> write_page for
the dirty page containing the on-disk inode X, the page is now locked
-> ntfs_write_mst_block() which clears PageUptodate() on the page to
prevent anyone else getting hold of it whilst it does the write out.
This is necessary as the on-disk inode needs "fixups" applied before
the write to disk which are removed again after the write and
PageUptodate is then set again. It then analyses the page looking
for dirty on-disk inodes and when it finds one it calls
ntfs_may_write_mft_record() to see if it is safe to write this
on-disk inode. This then calls ilookup5() to check if the
corresponding VFS inode is in icache(). This in turn calls ifind()
which waits on the inode lock via wait_on_inode whilst holding the
global inode_lock.
Process 2: pdflush results in a call to __sync_single_inode for the
same VFS inode X on the ntfs volume. This locks the inode (I_LOCK)
then calls write-inode -> ntfs_write_inode -> map_mft_record() ->
read_cache_page() for the page (in page cache of table of inodes
$MFT, inode 0) containing the on-disk inode. This page has
PageUptodate() clear because of Process 1 (see above) so
read_cache_page() blocks when it tries to take the page lock for the
page so it can call ntfs_read_page().
Thus Process 1 is holding the page lock on the page containing the
on-disk inode X and it is waiting on the inode X to be unlocked in
ifind() so it can write the page out and then unlock the page.
And Process 2 is holding the inode lock on inode X and is waiting for
the page to be unlocked so it can call ntfs_readpage() or discover
that Process 1 set PageUptodate() again and use the page.
Thus we have a deadlock due to ifind() waiting on the inode lock.
The solution: The fix is to use the newly introduced
ilookup5_nowait() which does not wait on the inode's lock and hence
avoids the deadlock. This is safe as we do not care about the VFS
inode and only use the fact that it is in the VFS inode cache and the
fact that the vfs and ntfs inodes are one struct in memory to find
the ntfs inode in memory if present. Also, the ntfs inode has its
own locking so it does not matter if the vfs inode is locked.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
1493 lines
82 KiB
Text
1493 lines
82 KiB
Text
ToDo/Notes:
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- Find and fix bugs.
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- In between ntfs_prepare/commit_write, need exclusion between
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simultaneous file extensions. This is given to us by holding i_sem
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on the inode. The only places in the kernel when a file is resized
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are prepare/commit write and truncate for both of which i_sem is
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held. Just have to be careful in readpage/writepage and all other
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helpers not running under i_sem that we play nice...
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Also need to be careful with initialized_size extention in
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ntfs_prepare_write. Basically, just be _very_ careful in this code...
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UPDATE: The only things that need to be checked are read/writepage
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which do not hold i_sem. Note writepage cannot change i_size but it
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needs to cope with a concurrent i_size change, just like readpage.
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Also both need to cope with concurrent changes to the other sizes,
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i.e. initialized/allocated/compressed size, as well.
|
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- Implement mft.c::sync_mft_mirror_umount(). We currently will just
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leave the volume dirty on umount if the final iput(vol->mft_ino)
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causes a write of any mirrored mft records due to the mft mirror
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inode having been discarded already. Whether this can actually ever
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happen is unclear however so it is worth waiting until someone hits
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the problem.
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- Enable the code for setting the NT4 compatibility flag when we start
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making NTFS 1.2 specific modifications.
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2.1.23 - Implement extension of resident files and make writing safe as well as
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many bug fixes, cleanups, and enhancements...
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|
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- Add printk rate limiting for ntfs_warning() and ntfs_error() when
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compiled without debug. This avoids a possible denial of service
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attack. Thanks to Carl-Daniel Hailfinger from SuSE for pointing this
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out.
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- Fix compilation warnings on ia64. (Randy Dunlap)
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- Use i_size_{read,write}() instead of reading i_size by hand and cache
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the value where apropriate.
|
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- Add size_lock to the ntfs_inode structure. This is an rw spinlock
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and it locks against access to the inode sizes. Note, ->size_lock
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is also accessed from irq context so you must use the _irqsave and
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_irqrestore lock and unlock functions, respectively. Protect all
|
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accesses to allocated_size, initialized_size, and compressed_size.
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- Minor optimization to fs/ntfs/super.c::ntfs_statfs() and its helpers.
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- Implement extension of resident files in the regular file write code
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paths (fs/ntfs/aops.c::ntfs_{prepare,commit}_write()). At present
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this only works until the data attribute becomes too big for the mft
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record after which we abort the write returning -EOPNOTSUPP from
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ntfs_prepare_write().
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- Add disable_sparse mount option together with a per volume sparse
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enable bit which is set appropriately and a per inode sparse disable
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bit which is preset on some system file inodes as appropriate.
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- Enforce that sparse support is disabled on NTFS volumes pre 3.0.
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- Fix a bug in fs/ntfs/runlist.c::ntfs_mapping_pairs_decompress() in
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the creation of the unmapped runlist element for the base attribute
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extent.
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- Split ntfs_map_runlist() into ntfs_map_runlist() and a non-locking
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helper ntfs_map_runlist_nolock() which is used by ntfs_map_runlist().
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This allows us to map runlist fragments with the runlist lock already
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held without having to drop and reacquire it around the call. Adapt
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all callers.
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- Change ntfs_find_vcn() to ntfs_find_vcn_nolock() which takes a locked
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runlist. This allows us to find runlist elements with the runlist
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lock already held without having to drop and reacquire it around the
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call. Adapt all callers.
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- Change time to u64 in time.h::ntfs2utc() as it otherwise generates a
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warning in the do_div() call on sparc32. Thanks to Meelis Roos for
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the report and analysis of the warning.
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- Fix a nasty runlist merge bug when merging two holes.
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- Set the ntfs_inode->allocated_size to the real allocated size in the
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mft record for resident attributes (fs/ntfs/inode.c).
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- Small readability cleanup to use "a" instead of "ctx->attr"
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everywhere (fs/ntfs/inode.c).
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- Make fs/ntfs/namei.c::ntfs_get_{parent,dentry} static and move the
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definition of ntfs_export_ops from fs/ntfs/super.c to namei.c. Also,
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declare ntfs_export_ops in fs/ntfs/ntfs.h.
|
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- Correct sparse file handling. The compressed values need to be
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checked and set in the ntfs inode as done for compressed files and
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the compressed size needs to be used for vfs inode->i_blocks instead
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of the allocated size, again, as done for compressed files.
|
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- Add AT_EA in addition to AT_DATA to whitelist for being allowed to be
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non-resident in fs/ntfs/attrib.c::ntfs_attr_can_be_non_resident().
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- Add fs/ntfs/attrib.c::ntfs_attr_vcn_to_lcn_nolock() used by the new
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write code.
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- Fix bug in fs/ntfs/attrib.c::ntfs_find_vcn_nolock() where after
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dropping the read lock and taking the write lock we were not checking
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whether someone else did not already do the work we wanted to do.
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- Rename fs/ntfs/attrib.c::ntfs_find_vcn_nolock() to
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ntfs_attr_find_vcn_nolock() and update all callers.
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- Add fs/ntfs/attrib.[hc]::ntfs_attr_make_non_resident().
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- Fix sign of various error return values to be negative in
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fs/ntfs/lcnalloc.c.
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- Modify ->readpage and ->writepage (fs/ntfs/aops.c) so they detect and
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handle the case where an attribute is converted from resident to
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non-resident by a concurrent file write.
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- Remove checks for NULL before calling kfree() since kfree() does the
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checking itself. (Jesper Juhl)
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- Some utilities modify the boot sector but do not update the checksum.
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Thus, relax the checking in fs/ntfs/super.c::is_boot_sector_ntfs() to
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only emit a warning when the checksum is incorrect rather than
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refusing the mount. Thanks to Bernd Casimir for pointing this
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problem out.
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- Update attribute definition handling.
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- Add NTFS_MAX_CLUSTER_SIZE and NTFS_MAX_PAGES_PER_CLUSTER constants.
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- Use NTFS_MAX_CLUSTER_SIZE in super.c instead of hard coding 0x10000.
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- Use MAX_BUF_PER_PAGE instead of variable sized array allocation for
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better code generation and one less sparse warning in fs/ntfs/aops.c.
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- Remove spurious void pointer casts from fs/ntfs/. (Pekka Enberg)
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- Use C99 style structure initialization after memory allocation where
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possible (fs/ntfs/{attrib.c,index.c,super.c}). Thanks to Al Viro and
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Pekka Enberg.
|
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- Stamp the transaction log ($UsnJrnl), aka user space journal, if it
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is active on the volume and we are mounting read-write or remounting
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from read-only to read-write.
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- Fix a bug in address space operations error recovery code paths where
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if the runlist was not mapped at all and a mapping error occured we
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would leave the runlist locked on exit to the function so that the
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next access to the same file would try to take the lock and deadlock.
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- Detect the case when Windows has been suspended to disk on the volume
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to be mounted and if this is the case do not allow (re)mounting
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read-write. This is done by parsing hiberfil.sys if present.
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- Fix several occurences of a bug where we would perform 'var & ~const'
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with a 64-bit variable and a int, i.e. 32-bit, constant. This causes
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the higher order 32-bits of the 64-bit variable to be zeroed. To fix
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this cast the 'const' to the same 64-bit type as 'var'.
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- Change the runlist terminator of the newly allocated cluster(s) to
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LCN_ENOENT in ntfs_attr_make_non_resident(). Otherwise the runlist
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code gets confused.
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- Add an extra parameter @last_vcn to ntfs_get_size_for_mapping_pairs()
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and ntfs_mapping_pairs_build() to allow the runlist encoding to be
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partial which is desirable when filling holes in sparse attributes.
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Update all callers.
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- Change ntfs_map_runlist_nolock() to only decompress the mapping pairs
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if the requested vcn is inside it. Otherwise we get into problems
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when we try to map an out of bounds vcn because we then try to map
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the already mapped runlist fragment which causes
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ntfs_mapping_pairs_decompress() to fail and return error. Update
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ntfs_attr_find_vcn_nolock() accordingly.
|
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- Fix a nasty deadlock that appeared in recent kernels.
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The situation: VFS inode X on a mounted ntfs volume is dirty. For
|
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same inode X, the ntfs_inode is dirty and thus corresponding on-disk
|
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inode, i.e. mft record, which is in a dirty PAGE_CACHE_PAGE belonging
|
|
to the table of inodes, i.e. $MFT, inode 0.
|
|
What happens:
|
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Process 1: sys_sync()/umount()/whatever... calls
|
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__sync_single_inode() for $MFT -> do_writepages() -> write_page for
|
|
the dirty page containing the on-disk inode X, the page is now locked
|
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-> ntfs_write_mst_block() which clears PageUptodate() on the page to
|
|
prevent anyone else getting hold of it whilst it does the write out.
|
|
This is necessary as the on-disk inode needs "fixups" applied before
|
|
the write to disk which are removed again after the write and
|
|
PageUptodate is then set again. It then analyses the page looking
|
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for dirty on-disk inodes and when it finds one it calls
|
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ntfs_may_write_mft_record() to see if it is safe to write this
|
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on-disk inode. This then calls ilookup5() to check if the
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corresponding VFS inode is in icache(). This in turn calls ifind()
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which waits on the inode lock via wait_on_inode whilst holding the
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global inode_lock.
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Process 2: pdflush results in a call to __sync_single_inode for the
|
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same VFS inode X on the ntfs volume. This locks the inode (I_LOCK)
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then calls write-inode -> ntfs_write_inode -> map_mft_record() ->
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read_cache_page() for the page (in page cache of table of inodes
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$MFT, inode 0) containing the on-disk inode. This page has
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PageUptodate() clear because of Process 1 (see above) so
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read_cache_page() blocks when it tries to take the page lock for the
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page so it can call ntfs_read_page().
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Thus Process 1 is holding the page lock on the page containing the
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on-disk inode X and it is waiting on the inode X to be unlocked in
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ifind() so it can write the page out and then unlock the page.
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And Process 2 is holding the inode lock on inode X and is waiting for
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the page to be unlocked so it can call ntfs_readpage() or discover
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that Process 1 set PageUptodate() again and use the page.
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Thus we have a deadlock due to ifind() waiting on the inode lock.
|
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The solution: The fix is to use the newly introduced
|
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ilookup5_nowait() which does not wait on the inode's lock and hence
|
|
avoids the deadlock. This is safe as we do not care about the VFS
|
|
inode and only use the fact that it is in the VFS inode cache and the
|
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fact that the vfs and ntfs inodes are one struct in memory to find
|
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the ntfs inode in memory if present. Also, the ntfs inode has its
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own locking so it does not matter if the vfs inode is locked.
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2.1.22 - Many bug and race fixes and error handling improvements.
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- Improve error handling in fs/ntfs/inode.c::ntfs_truncate().
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- Change fs/ntfs/inode.c::ntfs_truncate() to return an error code
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instead of void and provide a helper ntfs_truncate_vfs() for the
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vfs ->truncate method.
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- Add a new ntfs inode flag NInoTruncateFailed() and modify
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fs/ntfs/inode.c::ntfs_truncate() to set and clear it appropriately.
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- Fix min_size and max_size definitions in ATTR_DEF structure in
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fs/ntfs/layout.h to be signed.
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- Add attribute definition handling helpers to fs/ntfs/attrib.[hc]:
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ntfs_attr_size_bounds_check(), ntfs_attr_can_be_non_resident(), and
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ntfs_attr_can_be_resident(), which in turn use the new private helper
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ntfs_attr_find_in_attrdef().
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- In fs/ntfs/aops.c::mark_ntfs_record_dirty(), take the
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mapping->private_lock around the dirtying of the buffer heads
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analagous to the way it is done in __set_page_dirty_buffers().
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- Ensure the mft record size does not exceed the PAGE_CACHE_SIZE at
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mount time as this cannot work with the current implementation.
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- Check for location of attribute name and improve error handling in
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general in fs/ntfs/inode.c::ntfs_read_locked_inode() and friends.
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- In fs/ntfs/aops.c::ntfs_writepage(), if the page is fully outside
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i_size, i.e. race with truncate, invalidate the buffers on the page
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so that they become freeable and hence the page does not leak.
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- Remove unused function fs/ntfs/runlist.c::ntfs_rl_merge(). (Adrian
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Bunk)
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- Fix stupid bug in fs/ntfs/attrib.c::ntfs_attr_find() that resulted in
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a NULL pointer dereference in the error code path when a corrupt
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attribute was found. (Thanks to Domen Puncer for the bug report.)
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- Add MODULE_VERSION() to fs/ntfs/super.c.
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- Make several functions and variables static. (Adrian Bunk)
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- Modify fs/ntfs/aops.c::mark_ntfs_record_dirty() so it allocates
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buffers for the page if they are not present and then marks the
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buffers belonging to the ntfs record dirty. This causes the buffers
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to become busy and hence they are safe from removal until the page
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has been written out.
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- Fix stupid bug in fs/ntfs/attrib.c::ntfs_external_attr_find() in the
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error handling code path that resulted in a BUG() due to trying to
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unmap an extent mft record when the mapping of it had failed and it
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thus was not mapped. (Thanks to Ken MacFerrin for the bug report.)
|
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- Drop the runlist lock after the vcn has been read in
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fs/ntfs/lcnalloc.c::__ntfs_cluster_free().
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- Rewrite handling of multi sector transfer errors. We now do not set
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PageError() when such errors are detected in the async i/o handler
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fs/ntfs/aops.c::ntfs_end_buffer_async_read(). All users of mst
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protected attributes now check the magic of each ntfs record as they
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use it and act appropriately. This has the effect of making errors
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granular per ntfs record rather than per page which solves the case
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where we cannot access any of the ntfs records in a page when a
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single one of them had an mst error. (Thanks to Ken MacFerrin for
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the bug report.)
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- Fix error handling in fs/ntfs/quota.c::ntfs_mark_quotas_out_of_date()
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where we failed to release i_sem on the $Quota/$Q attribute inode.
|
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- Fix bug in handling of bad inodes in fs/ntfs/namei.c::ntfs_lookup().
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- Add mapping of unmapped buffers to all remaining code paths, i.e.
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fs/ntfs/aops.c::ntfs_write_mst_block(), mft.c::ntfs_sync_mft_mirror(),
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and write_mft_record_nolock(). From now on we require that the
|
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complete runlist for the mft mirror is always mapped into memory.
|
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- Add creation of buffers to fs/ntfs/mft.c::ntfs_sync_mft_mirror().
|
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- Improve error handling in fs/ntfs/aops.c::ntfs_{read,write}_block().
|
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- Cleanup fs/ntfs/aops.c::ntfs_{read,write}page() since we know that a
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resident attribute will be smaller than a page which makes the code
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simpler. Also make the code more tolerant to concurrent ->truncate.
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2.1.21 - Fix some races and bugs, rewrite mft write code, add mft allocator.
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|
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- Implement extent mft record deallocation
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fs/ntfs/mft.c::ntfs_extent_mft_record_free().
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- Splitt runlist related functions off from attrib.[hc] to runlist.[hc].
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- Add vol->mft_data_pos and initialize it at mount time.
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- Rename init_runlist() to ntfs_init_runlist(), ntfs_vcn_to_lcn() to
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ntfs_rl_vcn_to_lcn(), decompress_mapping_pairs() to
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ntfs_mapping_pairs_decompress(), ntfs_merge_runlists() to
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ntfs_runlists_merge() and adapt all callers.
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- Add fs/ntfs/runlist.[hc]::ntfs_get_nr_significant_bytes(),
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ntfs_get_size_for_mapping_pairs(), ntfs_write_significant_bytes(),
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and ntfs_mapping_pairs_build(), adapted from libntfs.
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- Make fs/ntfs/lcnalloc.c::ntfs_cluster_free_from_rl_nolock() not
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static and add a declaration for it to lcnalloc.h.
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- Add fs/ntfs/lcnalloc.h::ntfs_cluster_free_from_rl() which is a static
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inline wrapper for ntfs_cluster_free_from_rl_nolock() which takes the
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cluster bitmap lock for the duration of the call.
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- Add fs/ntfs/attrib.[hc]::ntfs_attr_record_resize().
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- Implement the equivalent of memset() for an ntfs attribute in
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fs/ntfs/attrib.[hc]::ntfs_attr_set() and switch
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fs/ntfs/logfile.c::ntfs_empty_logfile() to using it.
|
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- Remove unnecessary casts from LCN_* constants.
|
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- Implement fs/ntfs/runlist.c::ntfs_rl_truncate_nolock().
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- Add MFT_RECORD_OLD as a copy of MFT_RECORD in fs/ntfs/layout.h and
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change MFT_RECORD to contain the NTFS 3.1+ specific fields.
|
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- Add a helper function fs/ntfs/aops.c::mark_ntfs_record_dirty() which
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marks all buffers belonging to an ntfs record dirty, followed by
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marking the page the ntfs record is in dirty and also marking the vfs
|
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inode containing the ntfs record dirty (I_DIRTY_PAGES).
|
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- Switch fs/ntfs/index.h::ntfs_index_entry_mark_dirty() to using the
|
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new helper fs/ntfs/aops.c::mark_ntfs_record_dirty() and remove the no
|
|
longer needed fs/ntfs/index.[hc]::__ntfs_index_entry_mark_dirty().
|
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- Move ntfs_{un,}map_page() from ntfs.h to aops.h and fix resulting
|
|
include errors.
|
|
- Move the typedefs for runlist_element and runlist from types.h to
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runlist.h and fix resulting include errors.
|
|
- Remove unused {__,}format_mft_record() from fs/ntfs/mft.c.
|
|
- Modify fs/ntfs/mft.c::__mark_mft_record_dirty() to use the helper
|
|
mark_ntfs_record_dirty() which also changes the behaviour in that we
|
|
now set the buffers belonging to the mft record dirty as well as the
|
|
page itself.
|
|
- Update fs/ntfs/mft.c::write_mft_record_nolock() and sync_mft_mirror()
|
|
to cope with the fact that there now are dirty buffers in mft pages.
|
|
- Update fs/ntfs/inode.c::ntfs_write_inode() to also use the helper
|
|
mark_ntfs_record_dirty() and thus to set the buffers belonging to the
|
|
mft record dirty as well as the page itself.
|
|
- Fix compiler warnings on x86-64 in fs/ntfs/dir.c. (Randy Dunlap,
|
|
slightly modified by me)
|
|
- Add fs/ntfs/mft.c::try_map_mft_record() which fails with -EALREADY if
|
|
the mft record is already locked and otherwise behaves the same way
|
|
as fs/ntfs/mft.c::map_mft_record().
|
|
- Modify fs/ntfs/mft.c::write_mft_record_nolock() so that it only
|
|
writes the mft record if the buffers belonging to it are dirty.
|
|
Otherwise we assume that it was written out by other means already.
|
|
- Attempting to write outside initialized size is _not_ a bug so remove
|
|
the bug check from fs/ntfs/aops.c::ntfs_write_mst_block(). It is in
|
|
fact required to write outside initialized size when preparing to
|
|
extend the initialized size.
|
|
- Map the page instead of using page_address() before writing to it in
|
|
fs/ntfs/aops.c::ntfs_mft_writepage().
|
|
- Provide exclusion between opening an inode / mapping an mft record
|
|
and accessing the mft record in fs/ntfs/mft.c::ntfs_mft_writepage()
|
|
by setting the page not uptodate throughout ntfs_mft_writepage().
|
|
- Clear the page uptodate flag in fs/ntfs/aops.c::ntfs_write_mst_block()
|
|
to ensure noone can see the page whilst the mst fixups are applied.
|
|
- Add the helper fs/ntfs/mft.c::ntfs_may_write_mft_record() which
|
|
checks if an mft record may be written out safely obtaining any
|
|
necessary locks in the process. This is used by
|
|
fs/ntfs/aops.c::ntfs_write_mst_block().
|
|
- Modify fs/ntfs/aops.c::ntfs_write_mst_block() to also work for
|
|
writing mft records and improve its error handling in the process.
|
|
Now if any of the records in the page fail to be written out, all
|
|
other records will be written out instead of aborting completely.
|
|
- Remove ntfs_mft_aops and update all users to use ntfs_mst_aops.
|
|
- Modify fs/ntfs/inode.c::ntfs_read_locked_inode() to set the
|
|
ntfs_mst_aops for all inodes which are NInoMstProtected() and
|
|
ntfs_aops for all other inodes.
|
|
- Rename fs/ntfs/mft.c::sync_mft_mirror{,_umount}() to
|
|
ntfs_sync_mft_mirror{,_umount}() and change their parameters so they
|
|
no longer require an ntfs inode to be present. Update all callers.
|
|
- Cleanup the error handling in fs/ntfs/mft.c::ntfs_sync_mft_mirror().
|
|
- Clear the page uptodate flag in fs/ntfs/mft.c::ntfs_sync_mft_mirror()
|
|
to ensure noone can see the page whilst the mst fixups are applied.
|
|
- Remove the no longer needed fs/ntfs/mft.c::ntfs_mft_writepage() and
|
|
fs/ntfs/mft.c::try_map_mft_record().
|
|
- Fix callers of fs/ntfs/aops.c::mark_ntfs_record_dirty() to call it
|
|
with the ntfs inode which contains the page rather than the ntfs
|
|
inode the mft record of which is in the page.
|
|
- Fix race condition in fs/ntfs/inode.c::ntfs_put_inode() by moving the
|
|
index inode bitmap inode release code from there to
|
|
fs/ntfs/inode.c::ntfs_clear_big_inode(). (Thanks to Christoph
|
|
Hellwig for spotting this.)
|
|
- Fix race condition in fs/ntfs/inode.c::ntfs_put_inode() by taking the
|
|
inode semaphore around the code that sets ni->itype.index.bmp_ino to
|
|
NULL and reorganize the code to optimize it a bit. (Thanks to
|
|
Christoph Hellwig for spotting this.)
|
|
- Modify fs/ntfs/aops.c::mark_ntfs_record_dirty() to no longer take the
|
|
ntfs inode as a parameter as this is confusing and misleading and the
|
|
needed ntfs inode is available via NTFS_I(page->mapping->host).
|
|
Adapt all callers to this change.
|
|
- Modify fs/ntfs/mft.c::write_mft_record_nolock() and
|
|
fs/ntfs/aops.c::ntfs_write_mst_block() to only check the dirty state
|
|
of the first buffer in a record and to take this as the ntfs record
|
|
dirty state. We cannot look at the dirty state for subsequent
|
|
buffers because we might be racing with
|
|
fs/ntfs/aops.c::mark_ntfs_record_dirty().
|
|
- Move the static inline ntfs_init_big_inode() from fs/ntfs/inode.c to
|
|
inode.h and make fs/ntfs/inode.c::__ntfs_init_inode() non-static and
|
|
add a declaration for it to inode.h. Fix some compilation issues
|
|
that resulted due to #includes and header file interdependencies.
|
|
- Simplify setup of i_mode in fs/ntfs/inode.c::ntfs_read_locked_inode().
|
|
- Add helpers fs/ntfs/layout.h::MK_MREF() and MK_LE_MREF().
|
|
- Modify fs/ntfs/mft.c::map_extent_mft_record() to only verify the mft
|
|
record sequence number if it is specified (i.e. not zero).
|
|
- Add fs/ntfs/mft.[hc]::ntfs_mft_record_alloc() and various helper
|
|
functions used by it.
|
|
- Update Documentation/filesystems/ntfs.txt with instructions on how to
|
|
use the Device-Mapper driver with NTFS ftdisk/LDM raid. This removes
|
|
the linear raid problem with the Software RAID / MD driver when one
|
|
or more of the devices has an odd number of sectors.
|
|
|
|
2.1.20 - Fix two stupid bugs introduced in 2.1.18 release.
|
|
|
|
- Fix stupid bug in fs/ntfs/attrib.c::ntfs_attr_reinit_search_ctx()
|
|
where we did not clear ctx->al_entry but it was still set due to
|
|
changes in ntfs_attr_lookup() and ntfs_external_attr_find() in
|
|
particular.
|
|
- Fix another stupid bug in fs/ntfs/attrib.c::ntfs_external_attr_find()
|
|
where we forgot to unmap the extent mft record when we had finished
|
|
enumerating an attribute which caused a bug check to trigger when the
|
|
VFS calls ->clear_inode.
|
|
|
|
2.1.19 - Many cleanups, improvements, and a minor bug fix.
|
|
|
|
- Update ->setattr (fs/ntfs/inode.c::ntfs_setattr()) to refuse to
|
|
change the uid, gid, and mode of an inode as we do not support NTFS
|
|
ACLs yet.
|
|
- Remove BKL use from ntfs_setattr() syncing up with the rest of the
|
|
kernel.
|
|
- Get rid of the ugly transparent union in fs/ntfs/dir.c::ntfs_readdir()
|
|
and ntfs_filldir() as per suggestion from Al Viro.
|
|
- Change '\0' and L'\0' to simply 0 as per advice from Linus Torvalds.
|
|
- Update ->truncate (fs/ntfs/inode.c::ntfs_truncate()) to check if the
|
|
inode size has changed and to only output an error if so.
|
|
- Rename fs/ntfs/attrib.h::attribute_value_length() to ntfs_attr_size().
|
|
- Add le{16,32,64} as well as sle{16,32,64} data types to
|
|
fs/ntfs/types.h.
|
|
- Change ntfschar to be le16 instead of u16 in fs/ntfs/types.h.
|
|
- Add le versions of VCN, LCN, and LSN called leVCN, leLCN, and leLSN,
|
|
respectively, to fs/ntfs/types.h.
|
|
- Update endianness conversion macros in fs/ntfs/endian.h to use the
|
|
new types as appropriate.
|
|
- Do proper type casting when using sle64_to_cpup() in fs/ntfs/dir.c
|
|
and index.c.
|
|
- Add leMFT_REF data type to fs/ntfs/layout.h.
|
|
- Update all NTFS header files with the new little endian data types.
|
|
Affected files are fs/ntfs/layout.h, logfile.h, and time.h.
|
|
- Do proper type casting when using ntfs_is_*_recordp() in
|
|
fs/ntfs/logfile.c, mft.c, and super.c.
|
|
- Fix all the sparse bitwise warnings. Had to change all the typedef
|
|
enums storing little endian values to simple enums plus a typedef for
|
|
the datatype to make sparse happy.
|
|
- Fix a bug found by the new sparse bitwise warnings where the default
|
|
upcase table was defined as a pointer to wchar_t rather than ntfschar
|
|
in fs/ntfs/ntfs.h and super.c.
|
|
- Change {const_,}cpu_to_le{16,32}(0) to just 0 as suggested by Al Viro.
|
|
|
|
2.1.18 - Fix scheduling latencies at mount time as well as an endianness bug.
|
|
|
|
- Remove vol->nr_mft_records as it was pretty meaningless and optimize
|
|
the calculation of total/free inodes as used by statfs().
|
|
- Fix scheduling latencies in ntfs_fill_super() by dropping the BKL
|
|
because the code itself is using the ntfs_lock semaphore which
|
|
provides safe locking. (Ingo Molnar)
|
|
- Fix a potential bug in fs/ntfs/mft.c::map_extent_mft_record() that
|
|
could occur in the future for when we start closing/freeing extent
|
|
inodes if we don't set base_ni->ext.extent_ntfs_inos to NULL after
|
|
we free it.
|
|
- Rename {find,lookup}_attr() to ntfs_attr_{find,lookup}() as well as
|
|
find_external_attr() to ntfs_external_attr_find() to cleanup the
|
|
namespace a bit and to be more consistent with libntfs.
|
|
- Rename {{re,}init,get,put}_attr_search_ctx() to
|
|
ntfs_attr_{{re,}init,get,put}_search_ctx() as well as the type
|
|
attr_search_context to ntfs_attr_search_ctx.
|
|
- Force use of ntfs_attr_find() in ntfs_attr_lookup() when searching
|
|
for the attribute list attribute itself.
|
|
- Fix endianness bug in ntfs_external_attr_find().
|
|
- Change ntfs_{external_,}attr_find() to return 0 on success, -ENOENT
|
|
if the attribute is not found, and -EIO on real error. In the case
|
|
of -ENOENT, the search context is updated to describe the attribute
|
|
before which the attribute being searched for would need to be
|
|
inserted if such an action were to be desired and in the case of
|
|
ntfs_external_attr_find() the search context is also updated to
|
|
indicate the attribute list entry before which the attribute list
|
|
entry of the attribute being searched for would need to be inserted
|
|
if such an action were to be desired. Also make ntfs_find_attr()
|
|
static and remove its prototype from attrib.h as it is not used
|
|
anywhere other than attrib.c. Update ntfs_attr_lookup() and all
|
|
callers of ntfs_{external,}attr_{find,lookup}() for the new return
|
|
values.
|
|
- Minor cleanup of fs/ntfs/inode.c::ntfs_init_locked_inode().
|
|
|
|
2.1.17 - Fix bugs in mount time error code paths and other updates.
|
|
|
|
- Implement bitmap modification code (fs/ntfs/bitmap.[hc]). This
|
|
includes functions to set/clear a single bit or a run of bits.
|
|
- Add fs/ntfs/attrib.[hc]::ntfs_find_vcn() which returns the locked
|
|
runlist element containing a particular vcn. It also takes care of
|
|
mapping any needed runlist fragments.
|
|
- Implement cluster (de-)allocation code (fs/ntfs/lcnalloc.[hc]).
|
|
- Load attribute definition table from $AttrDef at mount time.
|
|
- Fix bugs in mount time error code paths involving (de)allocation of
|
|
the default and volume upcase tables.
|
|
- Remove ntfs_nr_mounts as it is no longer used.
|
|
|
|
2.1.16 - Implement access time updates, file sync, async io, and read/writev.
|
|
|
|
- Add support for readv/writev and aio_read/aio_write (fs/ntfs/file.c).
|
|
This is done by setting the appropriate file operations pointers to
|
|
the generic helper functions provided by mm/filemap.c.
|
|
- Implement fsync, fdatasync, and msync both for files (fs/ntfs/file.c)
|
|
and directories (fs/ntfs/dir.c).
|
|
- Add support for {a,m,c}time updates to inode.c::ntfs_write_inode().
|
|
Note, except for the root directory and any other system files opened
|
|
by the user, the system files will not have their access times
|
|
updated as they are only accessed at the inode level an hence the
|
|
file level functions which cause the times to be updated are never
|
|
invoked.
|
|
|
|
2.1.15 - Invalidate quotas when (re)mounting read-write.
|
|
|
|
- Add new element itype.index.collation_rule to the ntfs inode
|
|
structure and set it appropriately in ntfs_read_locked_inode().
|
|
- Implement a new inode type "index" to allow efficient access to the
|
|
indices found in various system files and adapt inode handling
|
|
accordingly (fs/ntfs/inode.[hc]). An index inode is essentially an
|
|
attribute inode (NInoAttr() is true) with an attribute type of
|
|
AT_INDEX_ALLOCATION. As such, it is no longer allowed to call
|
|
ntfs_attr_iget() with an attribute type of AT_INDEX_ALLOCATION as
|
|
there would be no way to distinguish between normal attribute inodes
|
|
and index inodes. The function to obtain an index inode is
|
|
ntfs_index_iget() and it uses the helper function
|
|
ntfs_read_locked_index_inode(). Note, we do not overload
|
|
ntfs_attr_iget() as indices consist of multiple attributes so using
|
|
ntfs_attr_iget() to obtain an index inode would be confusing.
|
|
- Ensure that there is no overflow when doing page->index <<
|
|
PAGE_CACHE_SHIFT by casting page->index to s64 in fs/ntfs/aops.c.
|
|
- Use atomic kmap instead of kmap() in fs/ntfs/aops.c::ntfs_read_page()
|
|
and ntfs_read_block().
|
|
- Use case sensitive attribute lookups instead of case insensitive ones.
|
|
- Lock all page cache pages belonging to mst protected attributes while
|
|
accessing them to ensure we never see corrupt data while the page is
|
|
under writeout.
|
|
- Add framework for generic ntfs collation (fs/ntfs/collation.[hc]).
|
|
We have ntfs_is_collation_rule_supported() to check if the collation
|
|
rule you want to use is supported and ntfs_collation() which actually
|
|
collates two data items. We currently only support COLLATION_BINARY
|
|
and COLLATION_NTOFS_ULONG but support for other collation rules will
|
|
be added as the need arises.
|
|
- Add a new type, ntfs_index_context, to allow retrieval of an index
|
|
entry using the corresponding index key. To get an index context,
|
|
use ntfs_index_ctx_get() and to release it, use ntfs_index_ctx_put().
|
|
This also adds a new slab cache for the index contexts. To lookup a
|
|
key in an index inode, use ntfs_index_lookup(). After modifying an
|
|
index entry, call ntfs_index_entry_flush_dcache_page() followed by
|
|
ntfs_index_entry_mark_dirty() to ensure the changes are written out
|
|
to disk. For details see fs/ntfs/index.[hc]. Note, at present, if
|
|
an index entry is in the index allocation attribute rather than the
|
|
index root attribute it will not be written out (you will get a
|
|
warning message about discarded changes instead).
|
|
- Load the quota file ($Quota) and check if quota tracking is enabled
|
|
and if so, mark the quotas out of date. This causes windows to
|
|
rescan the volume on boot and update all quota entries.
|
|
- Add a set_page_dirty address space operation for ntfs_m[fs]t_aops.
|
|
It is simply set to __set_page_dirty_nobuffers() to make sure that
|
|
running set_page_dirty() on a page containing mft/ntfs records will
|
|
not affect the dirty state of the page buffers.
|
|
- Add fs/ntfs/index.c::__ntfs_index_entry_mark_dirty() which sets all
|
|
buffers that are inside the ntfs record in the page dirty after which
|
|
it sets the page dirty. This allows ->writepage to only write the
|
|
dirty index records rather than having to write all the records in
|
|
the page. Modify fs/ntfs/index.h::ntfs_index_entry_mark_dirty() to
|
|
use this rather than __set_page_dirty_nobuffers().
|
|
- Implement fs/ntfs/aops.c::ntfs_write_mst_block() which enables the
|
|
writing of page cache pages belonging to mst protected attributes
|
|
like the index allocation attribute in directory indices and other
|
|
indices like $Quota/$Q, etc. This means that the quota is now marked
|
|
out of date on all volumes rather than only on ones where the quota
|
|
defaults entry is in the index root attribute of the $Quota/$Q index.
|
|
|
|
2.1.14 - Fix an NFSd caused deadlock reported by several users.
|
|
|
|
- Modify fs/ntfs/ntfs_readdir() to copy the index root attribute value
|
|
to a buffer so that we can put the search context and unmap the mft
|
|
record before calling the filldir() callback. We need to do this
|
|
because of NFSd which calls ->lookup() from its filldir callback()
|
|
and this causes NTFS to deadlock as ntfs_lookup() maps the mft record
|
|
of the directory and since ntfs_readdir() has got it mapped already
|
|
ntfs_lookup() deadlocks.
|
|
|
|
2.1.13 - Enable overwriting of resident files and housekeeping of system files.
|
|
|
|
- Implement writing of mft records (fs/ntfs/mft.[hc]), which includes
|
|
keeping the mft mirror in sync with the mft when mirrored mft records
|
|
are written. The functions are write_mft_record{,_nolock}(). The
|
|
implementation is quite rudimentary for now with lots of things not
|
|
implemented yet but I am not sure any of them can actually occur so
|
|
I will wait for people to hit each one and only then implement it.
|
|
- Commit open system inodes at umount time. This should make it
|
|
virtually impossible for sync_mft_mirror_umount() to ever be needed.
|
|
- Implement ->write_inode (fs/ntfs/inode.c::ntfs_write_inode()) for the
|
|
ntfs super operations. This gives us inode writing via the VFS inode
|
|
dirty code paths. Note: Access time updates are not implemented yet.
|
|
- Implement fs/ntfs/mft.[hc]::{,__}mark_mft_record_dirty() and make
|
|
fs/ntfs/aops.c::ntfs_writepage() and ntfs_commit_write() use it, thus
|
|
finally enabling resident file overwrite! (-8 This also includes a
|
|
placeholder for ->writepage (ntfs_mft_writepage()), which for now
|
|
just redirties the page and returns. Also, at umount time, we for
|
|
now throw away all mft data page cache pages after the last call to
|
|
ntfs_commit_inode() in the hope that all inodes will have been
|
|
written out by then and hence no dirty (meta)data will be lost. We
|
|
also check for this case and emit an error message telling the user
|
|
to run chkdsk.
|
|
- Use set_page_writeback() and end_page_writeback() in the resident
|
|
attribute code path of fs/ntfs/aops.c::ntfs_writepage() otherwise
|
|
the radix-tree tag PAGECACHE_TAG_DIRTY remains set even though the
|
|
page is clean.
|
|
- Implement ntfs_mft_writepage() so it now checks if any of the mft
|
|
records in the page are dirty and if so redirties the page and
|
|
returns. Otherwise it just returns (after doing set_page_writeback(),
|
|
unlock_page(), end_page_writeback() or the radix-tree tag
|
|
PAGECACHE_TAG_DIRTY remains set even though the page is clean), thus
|
|
alowing the VM to do with the page as it pleases. Also, at umount
|
|
time, now only throw away dirty mft (meta)data pages if dirty inodes
|
|
are present and ask the user to email us if they see this happening.
|
|
- Add functions ntfs_{clear,set}_volume_flags(), to modify the volume
|
|
information flags (fs/ntfs/super.c).
|
|
- Mark the volume dirty when (re)mounting read-write and mark it clean
|
|
when unmounting or remounting read-only. If any volume errors are
|
|
found, the volume is left marked dirty to force chkdsk to run.
|
|
- Add code to set the NT4 compatibility flag when (re)mounting
|
|
read-write for newer NTFS versions but leave it commented out for now
|
|
since we do not make any modifications that are NTFS 1.2 specific yet
|
|
and since setting this flag breaks Captive-NTFS which is not nice.
|
|
This code must be enabled once we start writing NTFS 1.2 specific
|
|
changes otherwise Windows NTFS driver might crash / cause corruption.
|
|
|
|
2.1.12 - Fix the second fix to the decompression engine and some cleanups.
|
|
|
|
- Add a new address space operations struct, ntfs_mst_aops, for mst
|
|
protected attributes. This is because the default ntfs_aops do not
|
|
make sense with mst protected data and were they to write anything to
|
|
such an attribute they would cause data corruption so we provide
|
|
ntfs_mst_aops which does not have any write related operations set.
|
|
- Cleanup dirty ntfs inode handling (fs/ntfs/inode.[hc]) which also
|
|
includes an adapted ntfs_commit_inode() and an implementation of
|
|
ntfs_write_inode() which for now just cleans dirty inodes without
|
|
writing them (it does emit a warning that this is happening).
|
|
- Undo the second decompression engine fix (see 2.1.9 release ChangeLog
|
|
entry) as it was only fixing a theoretical bug but at the same time
|
|
it badly broke the handling of sparse and uncompressed compression
|
|
blocks.
|
|
|
|
2.1.11 - Driver internal cleanups.
|
|
|
|
- Only build logfile.o if building the driver with read-write support.
|
|
- Really final white space cleanups.
|
|
- Use generic_ffs() instead of ffs() in logfile.c which allows the
|
|
log_page_size variable to be optimized by gcc into a constant.
|
|
- Rename uchar_t to ntfschar everywhere as uchar_t is unsigned 1-byte
|
|
char as defined by POSIX and as found on some systems.
|
|
|
|
2.1.10 - Force read-only (re)mounting of volumes with unsupported volume flags.
|
|
|
|
- Finish off the white space cleanups (remove trailing spaces, etc).
|
|
- Clean up ntfs_fill_super() and ntfs_read_inode_mount() by removing
|
|
the kludges around the first iget(). Instead of (re)setting ->s_op
|
|
we have the $MFT inode set up by explicit new_inode() / set ->i_ino /
|
|
insert_inode_hash() / call ntfs_read_inode_mount() directly. This
|
|
kills the need for second super_operations and allows to return error
|
|
from ntfs_read_inode_mount() without resorting to ugly "poisoning"
|
|
tricks. (Al Viro)
|
|
- Force read-only (re)mounting if any of the following bits are set in
|
|
the volume information flags:
|
|
VOLUME_IS_DIRTY, VOLUME_RESIZE_LOG_FILE,
|
|
VOLUME_UPGRADE_ON_MOUNT, VOLUME_DELETE_USN_UNDERWAY,
|
|
VOLUME_REPAIR_OBJECT_ID, VOLUME_MODIFIED_BY_CHKDSK
|
|
To make this easier we define VOLUME_MUST_MOUNT_RO_MASK with all the
|
|
above bits set so the test is made easy.
|
|
|
|
2.1.9 - Fix two bugs in decompression engine.
|
|
|
|
- Fix a bug where we would not always detect that we have reached the
|
|
end of a compression block because we were ending at minus one byte
|
|
which is effectively the same as being at the end. The fix is to
|
|
check whether the uncompressed buffer has been fully filled and if so
|
|
we assume we have reached the end of the compression block. A big
|
|
thank you to Marcin Gibuła for the bug report, the assistance in
|
|
tracking down the bug and testing the fix.
|
|
- Fix a possible bug where when a compressed read is truncated to the
|
|
end of the file, the offset inside the last page was not truncated.
|
|
|
|
2.1.8 - Handle $MFT mirror and $LogFile, improve time handling, and cleanups.
|
|
|
|
- Use get_bh() instead of manual atomic_inc() in fs/ntfs/compress.c.
|
|
- Modify fs/ntfs/time.c::ntfs2utc(), get_current_ntfs_time(), and
|
|
utc2ntfs() to work with struct timespec instead of time_t on the
|
|
Linux UTC time side thus preserving the full precision of the NTFS
|
|
time and only loosing up to 99 nano-seconds in the Linux UTC time.
|
|
- Move fs/ntfs/time.c to fs/ntfs/time.h and make the time functions
|
|
static inline.
|
|
- Remove unused ntfs_dirty_inode().
|
|
- Cleanup super operations declaration in fs/ntfs/super.c.
|
|
- Wrap flush_dcache_mft_record_page() in #ifdef NTFS_RW.
|
|
- Add NInoTestSetFoo() and NInoTestClearFoo() macro magic to
|
|
fs/ntfs/inode.h and use it to declare NInoTest{Set,Clear}Dirty.
|
|
- Move typedefs for ntfs_attr and test_t from fs/ntfs/inode.c to
|
|
fs/ntfs/inode.h so they can be used elsewhere.
|
|
- Determine the mft mirror size as the number of mirrored mft records
|
|
and store it in ntfs_volume->mftmirr_size (fs/ntfs/super.c).
|
|
- Load the mft mirror at mount time and compare the mft records stored
|
|
in it to the ones in the mft. Force a read-only mount if the two do
|
|
not match (fs/ntfs/super.c).
|
|
- Fix type casting related warnings on 64-bit architectures. Thanks
|
|
to Meelis Roos for reporting them.
|
|
- Move %L to %ll as %L is floating point and %ll is integer which is
|
|
what we want.
|
|
- Read the journal ($LogFile) and determine if the volume has been
|
|
shutdown cleanly and force a read-only mount if not (fs/ntfs/super.c
|
|
and fs/ntfs/logfile.c). This is a little bit of a crude check in
|
|
that we only look at the restart areas and not at the actual log
|
|
records so that there will be a very small number of cases where we
|
|
think that a volume is dirty when in fact it is clean. This should
|
|
only affect volumes that have not been shutdown cleanly and did not
|
|
have any pending, non-check-pointed i/o.
|
|
- If the $LogFile indicates a clean shutdown and a read-write (re)mount
|
|
is requested, empty $LogFile by overwriting it with 0xff bytes to
|
|
ensure that Windows cannot cause data corruption by replaying a stale
|
|
journal after Linux has written to the volume.
|
|
|
|
2.1.7 - Enable NFS exporting of mounted NTFS volumes.
|
|
|
|
- Set i_generation in the VFS inode from the seq_no of the NTFS inode.
|
|
- Make ntfs_lookup() NFS export safe, i.e. use d_splice_alias(), etc.
|
|
- Implement ->get_dentry() in fs/ntfs/namei.c::ntfs_get_dentry() as the
|
|
default doesn't allow inode number 0 which is a valid inode on NTFS
|
|
and even if it did allow that it uses iget() instead of ntfs_iget()
|
|
which makes it useless for us.
|
|
- Implement ->get_parent() in fs/ntfs/namei.c::ntfs_get_parent() as the
|
|
default just returns -EACCES which is not very useful.
|
|
- Define export operations (->s_export_op) for NTFS (ntfs_export_ops)
|
|
and set them up in the super block at mount time (super.c) this
|
|
allows mounted NTFS volumes to be exported via NFS.
|
|
- Add missing return -EOPNOTSUPP; in
|
|
fs/ntfs/aops.c::ntfs_commit_nonresident_write().
|
|
- Enforce no atime and no dir atime updates at mount/remount time as
|
|
they are not implemented yet anyway.
|
|
- Move a few assignments in fs/ntfs/attrib.c::load_attribute_list() to
|
|
after a NULL check. Thanks to Dave Jones for pointing this out.
|
|
|
|
2.1.6 - Fix minor bug in handling of compressed directories.
|
|
|
|
- Fix bug in handling of compressed directories. A compressed
|
|
directory is not really compressed so when we set the ->i_blocks
|
|
field of a compressed directory inode we were setting it from the
|
|
non-existing field ni->itype.compressed.size which gave random
|
|
results... For directories we now always use ni->allocated_size.
|
|
|
|
2.1.5 - Fix minor bug in attribute list attribute handling.
|
|
|
|
- Fix bug in attribute list handling. Actually it is not as much a bug
|
|
as too much protection in that we were not allowing attribute lists
|
|
which waste space on disk while Windows XP clearly allows it and in
|
|
fact creates such attribute lists so our driver was failing.
|
|
- Update NTFS documentation ready for 2.6 kernel release.
|
|
|
|
2.1.4 - Reduce compiler requirements.
|
|
|
|
- Remove all uses of unnamed structs and unions in the driver to make
|
|
old and newer gcc versions happy. Makes it a bit uglier IMO but at
|
|
least people will stop hassling me about it.
|
|
|
|
2.1.3 - Important bug fixes in corner cases.
|
|
|
|
- super.c::parse_ntfs_boot_sector(): Correct the check for 64-bit
|
|
clusters. (Philipp Thomas)
|
|
- attrib.c::load_attribute_list(): Fix bug when initialized_size is a
|
|
multiple of the block_size but not the cluster size. (Szabolcs
|
|
Szakacsits <szaka@sienet.hu>)
|
|
|
|
2.1.2 - Important bug fixes aleviating the hangs in statfs.
|
|
|
|
- Fix buggy free cluster and free inode determination logic.
|
|
|
|
2.1.1 - Minor updates.
|
|
|
|
- Add handling for initialized_size != data_size in compressed files.
|
|
- Reduce function local stack usage from 0x3d4 bytes to just noise in
|
|
fs/ntfs/upcase.c. (Randy Dunlap <rddunlap@osdl.ord>)
|
|
- Remove compiler warnings for newer gcc.
|
|
- Pages are no longer kmapped by mm/filemap.c::generic_file_write()
|
|
around calls to ->{prepare,commit}_write. Adapt NTFS appropriately
|
|
in fs/ntfs/aops.c::ntfs_prepare_nonresident_write() by using
|
|
kmap_atomic(KM_USER0).
|
|
|
|
2.1.0 - First steps towards write support: implement file overwrite.
|
|
|
|
- Add configuration option for developmental write support with an
|
|
appropriately scary configuration help text.
|
|
- Initial implementation of fs/ntfs/aops.c::ntfs_writepage() and its
|
|
helper fs/ntfs/aops.c::ntfs_write_block(). This enables mmap(2) based
|
|
overwriting of existing files on ntfs. Note: Resident files are
|
|
only written into memory, and not written out to disk at present, so
|
|
avoid writing to files smaller than about 1kiB.
|
|
- Initial implementation of fs/ntfs/aops.c::ntfs_prepare_write(), its
|
|
helper fs/ntfs/aops.c::ntfs_prepare_nonresident_write() and their
|
|
counterparts, fs/ntfs/aops.c::ntfs_commit_write(), and
|
|
fs/ntfs/aops.c::ntfs_commit_nonresident_write(), respectively. Also,
|
|
add generic_file_write() to the ntfs file operations (fs/ntfs/file.c).
|
|
This enables write(2) based overwriting of existing files on ntfs.
|
|
Note: As with mmap(2) based overwriting, resident files are only
|
|
written into memory, and not written out to disk at present, so avoid
|
|
writing to files smaller than about 1kiB.
|
|
- Implement ->truncate (fs/ntfs/inode.c::ntfs_truncate()) and
|
|
->setattr() (fs/ntfs/inode.c::ntfs_setattr()) inode operations for
|
|
files with the purpose of intercepting and aborting all i_size
|
|
changes which we do not support yet. ntfs_truncate() actually only
|
|
emits a warning message but AFAICS our interception of i_size changes
|
|
elsewhere means ntfs_truncate() never gets called for i_size changes.
|
|
It is only called from generic_file_write() when we fail in
|
|
ntfs_prepare_{,nonresident_}write() in order to discard any
|
|
instantiated buffers beyond i_size. Thus i_size is not actually
|
|
changed so our warning message is enough. Unfortunately it is not
|
|
possible to easily determine if i_size is being changed or not hence
|
|
we just emit an appropriately worded error message.
|
|
|
|
2.0.25 - Small bug fixes and cleanups.
|
|
|
|
- Unlock the page in an out of memory error code path in
|
|
fs/ntfs/aops.c::ntfs_read_block().
|
|
- If fs/ntfs/aops.c::ntfs_read_page() is called on an uptodate page,
|
|
just unlock the page and return. (This can happen due to ->writepage
|
|
clearing PageUptodate() during write out of MstProtected()
|
|
attributes.
|
|
- Remove leaked write code again.
|
|
|
|
2.0.24 - Cleanups.
|
|
|
|
- Treat BUG_ON() as ASSERT() not VERIFY(), i.e. do not use side effects
|
|
inside BUG_ON(). (Adam J. Richter)
|
|
- Split logical OR expressions inside BUG_ON() into individual BUG_ON()
|
|
calls for improved debugging. (Adam J. Richter)
|
|
- Add errors flag to the ntfs volume state, accessed via
|
|
NVol{,Set,Clear}Errors(vol).
|
|
- Do not allow read-write remounts of read-only volumes with errors.
|
|
- Clarify comment for ntfs file operation sendfile which was added by
|
|
Christoph Hellwig a while ago (just using generic_file_sendfile())
|
|
to say that ntfs ->sendfile is only used for the case where the
|
|
source data is on the ntfs partition and the destination is
|
|
somewhere else, i.e. nothing we need to concern ourselves with.
|
|
- Add generic_file_write() as our ntfs file write operation.
|
|
|
|
2.0.23 - Major bug fixes (races, deadlocks, non-i386 architectures).
|
|
|
|
- Massive internal locking changes to mft record locking. Fixes lock
|
|
recursion and replaces the mrec_lock read/write semaphore with a
|
|
mutex. Also removes the now superfluous mft_count. This fixes several
|
|
race conditions and deadlocks, especially in the future write code.
|
|
- Fix ntfs over loopback for compressed files by adding an
|
|
optimization barrier. (gcc was screwing up otherwise ?)
|
|
- Miscellaneous cleanups all over the code and a fix or two in error
|
|
handling code paths.
|
|
Thanks go to Christoph Hellwig for pointing out the following two:
|
|
- Remove now unused function fs/ntfs/malloc.h::vmalloc_nofs().
|
|
- Fix ntfs_free() for ia64 and parisc by checking for VMALLOC_END, too.
|
|
|
|
2.0.22 - Cleanups, mainly to ntfs_readdir(), and use C99 initializers.
|
|
|
|
- Change fs/ntfs/dir.c::ntfs_reddir() to only read/write ->f_pos once
|
|
at entry/exit respectively.
|
|
- Use C99 initializers for structures.
|
|
- Remove unused variable blocks from fs/ntfs/aops.c::ntfs_read_block().
|
|
|
|
2.0.21 - Check for, and refuse to work with too large files/directories/volumes.
|
|
|
|
- Limit volume size at mount time to 2TiB on architectures where
|
|
unsigned long is 32-bits (fs/ntfs/super.c::parse_ntfs_boot_sector()).
|
|
This is the most we can do without overflowing the 32-bit limit of
|
|
the block device size imposed on us by sb_bread() and sb_getblk()
|
|
for the time being.
|
|
- Limit file/directory size at open() time to 16TiB on architectures
|
|
where unsigned long is 32-bits (fs/ntfs/file.c::ntfs_file_open() and
|
|
fs/ntfs/dir.c::ntfs_dir_open()). This is the most we can do without
|
|
overflowing the page cache page index.
|
|
|
|
2.0.20 - Support non-resident directory index bitmaps, fix page leak in readdir.
|
|
|
|
- Move the directory index bitmap to use an attribute inode instead of
|
|
having special fields for it inside the ntfs inode structure. This
|
|
means that the index bitmaps now use the page cache for i/o, too,
|
|
and also as a side effect we get support for non-resident index
|
|
bitmaps for free.
|
|
- Simplify/cleanup error handling in fs/ntfs/dir.c::ntfs_readdir() and
|
|
fix a page leak that manifested itself in some cases.
|
|
- Add fs/ntfs/inode.c::ntfs_put_inode(), which we need to release the
|
|
index bitmap inode on the final iput().
|
|
|
|
2.0.19 - Fix race condition, improvements, and optimizations in i/o interface.
|
|
|
|
- Apply block optimization added to fs/ntfs/aops.c::ntfs_read_block()
|
|
to fs/ntfs/compress.c::ntfs_file_read_compressed_block() as well.
|
|
- Drop the "file" from ntfs_file_read_compressed_block().
|
|
- Rename fs/ntfs/aops.c::ntfs_enb_buffer_read_async() to
|
|
ntfs_end_buffer_async_read() (more like the fs/buffer.c counterpart).
|
|
- Update ntfs_end_buffer_async_read() with the improved logic from
|
|
its updated counterpart fs/buffer.c::end_buffer_async_read(). Apply
|
|
further logic improvements to better determine when we set PageError.
|
|
- Update submission of buffers in fs/ntfs/aops.c::ntfs_read_block() to
|
|
check for the buffers being uptodate first in line with the updated
|
|
fs/buffer.c::block_read_full_page(). This plugs a small race
|
|
condition.
|
|
|
|
2.0.18 - Fix race condition in reading of compressed files.
|
|
|
|
- There was a narrow window between checking a buffer head for being
|
|
uptodate and locking it in ntfs_file_read_compressed_block(). We now
|
|
lock the buffer and then check whether it is uptodate or not.
|
|
|
|
2.0.17 - Cleanups and optimizations - shrinking the ToDo list.
|
|
|
|
- Modify fs/ntfs/inode.c::ntfs_read_locked_inode() to return an error
|
|
code and update callers, i.e. ntfs_iget(), to pass that error code
|
|
up instead of just using -EIO.
|
|
- Modifications to super.c to ensure that both mount and remount
|
|
cannot set any write related options when the driver is compiled
|
|
read-only.
|
|
- Optimize block resolution in fs/ntfs/aops.c::ntfs_read_block() to
|
|
cache the current runlist element. This should improve performance
|
|
when reading very large and/or very fragmented data.
|
|
|
|
2.0.16 - Convert access to $MFT/$BITMAP to attribute inode API.
|
|
|
|
- Fix a stupid bug introduced in 2.0.15 where we were unmapping the
|
|
wrong inode in fs/ntfs/inode.c::ntfs_attr_iget().
|
|
- Fix debugging check in fs/ntfs/aops.c::ntfs_read_block().
|
|
- Convert $MFT/$BITMAP access to attribute inode API and remove all
|
|
remnants of the ugly mftbmp address space and operations hack. This
|
|
means we finally have only one readpage function as well as only one
|
|
async io completion handler. Yey! The mft bitmap is now just an
|
|
attribute inode and is accessed from vol->mftbmp_ino just as if it
|
|
were a normal file. Fake inodes rule. (-:
|
|
|
|
2.0.15 - Fake inodes based attribute i/o via the pagecache, fixes and cleanups.
|
|
|
|
- Fix silly bug in fs/ntfs/super.c::parse_options() which was causing
|
|
remounts to fail when the partition had an entry in /etc/fstab and
|
|
the entry specified the nls= option.
|
|
- Apply same macro magic used in fs/ntfs/inode.h to fs/ntfs/volume.h to
|
|
expand all the helper functions NVolFoo(), NVolSetFoo(), and
|
|
NVolClearFoo().
|
|
- Move copyright statement from driver initialisation message to
|
|
module description (fs/super.c). This makes the initialisation
|
|
message fit on one line and fits in better with rest of kernel.
|
|
- Update fs/ntfs/attrib.c::map_run_list() to work on both real and
|
|
attribute inodes, and both for files and directories.
|
|
- Implement fake attribute inodes allowing all attribute i/o to go via
|
|
the page cache and to use all the normal vfs/mm functionality:
|
|
- Add ntfs_attr_iget() and its helper ntfs_read_locked_attr_inode()
|
|
to fs/ntfs/inode.c.
|
|
- Add needed cleanup code to ntfs_clear_big_inode().
|
|
- Merge address space operations for files and directories (aops.c),
|
|
now just have ntfs_aops:
|
|
- Rename:
|
|
end_buffer_read_attr_async() -> ntfs_end_buffer_read_async(),
|
|
ntfs_attr_read_block() -> ntfs_read_block(),
|
|
ntfs_file_read_page() -> ntfs_readpage().
|
|
- Rewrite fs/ntfs/aops.c::ntfs_readpage() to work on both real and
|
|
attribute inodes, and both for files and directories.
|
|
- Remove obsolete fs/ntfs/aops.c::ntfs_mst_readpage().
|
|
|
|
2.0.14 - Run list merging code cleanup, minor locking changes, typo fixes.
|
|
|
|
- Change fs/ntfs/super.c::ntfs_statfs() to not rely on BKL by moving
|
|
the locking out of super.c::get_nr_free_mft_records() and taking and
|
|
dropping the mftbmp_lock rw_semaphore in ntfs_statfs() itself.
|
|
- Bring attribute runlist merging code (fs/ntfs/attrib.c) in sync with
|
|
current userspace ntfs library code. This means that if a merge
|
|
fails the original runlists are always left unmodified instead of
|
|
being silently corrupted.
|
|
- Misc typo fixes.
|
|
|
|
2.0.13 - Use iget5_locked() in preparation for fake inodes and small cleanups.
|
|
|
|
- Remove nr_mft_bits and the now superfluous union with nr_mft_records
|
|
from ntfs_volume structure.
|
|
- Remove nr_lcn_bits and the now superfluous union with nr_clusters
|
|
from ntfs_volume structure.
|
|
- Use iget5_locked() and friends instead of conventional iget(). Wrap
|
|
the call in fs/ntfs/inode.c::ntfs_iget() and update callers of iget()
|
|
to use ntfs_iget(). Leave only one iget() call at mount time so we
|
|
don't need an ntfs_iget_mount().
|
|
- Change fs/ntfs/inode.c::ntfs_new_extent_inode() to take mft_no as an
|
|
additional argument.
|
|
|
|
2.0.12 - Initial cleanup of address space operations following 2.0.11 changes.
|
|
|
|
- Merge fs/ntfs/aops.c::end_buffer_read_mst_async() and
|
|
fs/ntfs/aops.c::end_buffer_read_file_async() into one function
|
|
fs/ntfs/aops.c::end_buffer_read_attr_async() using NInoMstProtected()
|
|
to determine whether to apply mst fixups or not.
|
|
- Above change allows merging fs/ntfs/aops.c::ntfs_file_read_block()
|
|
and fs/ntfs/aops.c::ntfs_mst_readpage() into one function
|
|
fs/ntfs/aops.c::ntfs_attr_read_block(). Also, create a tiny wrapper
|
|
fs/ntfs/aops.c::ntfs_mst_readpage() to transform the parameters from
|
|
the VFS readpage function prototype to the ntfs_attr_read_block()
|
|
function prototype.
|
|
|
|
2.0.11 - Initial preparations for fake inode based attribute i/o.
|
|
|
|
- Move definition of ntfs_inode_state_bits to fs/ntfs/inode.h and
|
|
do some macro magic (adapted from include/linux/buffer_head.h) to
|
|
expand all the helper functions NInoFoo(), NInoSetFoo(), and
|
|
NInoClearFoo().
|
|
- Add new flag to ntfs_inode_state_bits: NI_Sparse.
|
|
- Add new fields to ntfs_inode structure to allow use of fake inodes
|
|
for attribute i/o: type, name, name_len. Also add new state bits:
|
|
NI_Attr, which, if set, indicates the inode is a fake inode, and
|
|
NI_MstProtected, which, if set, indicates the attribute uses multi
|
|
sector transfer protection, i.e. fixups need to be applied after
|
|
reads and before/after writes.
|
|
- Rename fs/ntfs/inode.c::ntfs_{new,clear,destroy}_inode() to
|
|
ntfs_{new,clear,destroy}_extent_inode() and update callers.
|
|
- Use ntfs_clear_extent_inode() in fs/ntfs/inode.c::__ntfs_clear_inode()
|
|
instead of ntfs_destroy_extent_inode().
|
|
- Cleanup memory deallocations in {__,}ntfs_clear_{,big_}inode().
|
|
- Make all operations on ntfs inode state bits use the NIno* functions.
|
|
- Set up the new ntfs inode fields and state bits in
|
|
fs/ntfs/inode.c::ntfs_read_inode() and add appropriate cleanup of
|
|
allocated memory to __ntfs_clear_inode().
|
|
- Cleanup ntfs_inode structure a bit for better ordering of elements
|
|
w.r.t. their size to allow better packing of the structure in memory.
|
|
|
|
2.0.10 - There can only be 2^32 - 1 inodes on an NTFS volume.
|
|
|
|
- Add check at mount time to verify that the number of inodes on the
|
|
volume does not exceed 2^32 - 1, which is the maximum allowed for
|
|
NTFS according to Microsoft.
|
|
- Change mft_no member of ntfs_inode structure to be unsigned long.
|
|
Update all users. This makes ntfs_inode->mft_no just a copy of struct
|
|
inode->i_ino. But we can't just always use struct inode->i_ino and
|
|
remove mft_no because extent inodes do not have an attached struct
|
|
inode.
|
|
|
|
2.0.9 - Decompression engine now uses a single buffer and other cleanups.
|
|
|
|
- Change decompression engine to use a single buffer protected by a
|
|
spin lock instead of per-CPU buffers. (Rusty Russell)
|
|
- Do not update cb_pos when handling a partial final page during
|
|
decompression of a sparse compression block, as the value is later
|
|
reset without being read/used. (Rusty Russell)
|
|
- Switch to using the new KM_BIO_SRC_IRQ for atomic kmap()s. (Andrew
|
|
Morton)
|
|
- Change buffer size in ntfs_readdir()/ntfs_filldir() to use
|
|
NLS_MAX_CHARSET_SIZE which makes the buffers almost 1kiB each but
|
|
it also makes everything safer so it is a good thing.
|
|
- Miscellaneous minor cleanups to comments.
|
|
|
|
2.0.8 - Major updates for handling of case sensitivity and dcache aliasing.
|
|
|
|
Big thanks go to Al Viro and other inhabitants of #kernel for investing
|
|
their time to discuss the case sensitivity and dcache aliasing issues.
|
|
|
|
- Remove unused source file fs/ntfs/attraops.c.
|
|
- Remove show_inodes mount option(s), thus dropping support for
|
|
displaying of short file names.
|
|
- Remove deprecated mount option posix.
|
|
- Restore show_sys_files mount option.
|
|
- Add new mount option case_sensitive, to determine if the driver
|
|
treats file names as case sensitive or not. If case sensitive, create
|
|
file names in the POSIX namespace. Otherwise create file names in the
|
|
LONG/WIN32 namespace. Note, files remain accessible via their short
|
|
file name, if it exists.
|
|
- Remove really dumb logic bug in boot sector recovery code.
|
|
- Fix dcache aliasing issues wrt short/long file names via changes
|
|
to fs/ntfs/dir.c::ntfs_lookup_inode_by_name() and
|
|
fs/ntfs/namei.c::ntfs_lookup():
|
|
- Add additional argument to ntfs_lookup_inode_by_name() in which we
|
|
return information about the matching file name if the case is not
|
|
matching or the match is a short file name. See comments above the
|
|
function definition for details.
|
|
- Change ntfs_lookup() to only create dcache entries for the correctly
|
|
cased file name and only for the WIN32 namespace counterpart of DOS
|
|
namespace file names. This ensures we have only one dentry per
|
|
directory and also removes all dcache aliasing issues between short
|
|
and long file names once we add write support. See comments above
|
|
function for details.
|
|
- Fix potential 1 byte overflow in fs/ntfs/unistr.c::ntfs_ucstonls().
|
|
|
|
2.0.7 - Minor cleanups and updates for changes in core kernel code.
|
|
|
|
- Remove much of the NULL struct element initializers.
|
|
- Various updates to make compatible with recent kernels.
|
|
- Remove defines of MAX_BUF_PER_PAGE and include linux/buffer_head.h
|
|
in fs/ntfs/ntfs.h instead.
|
|
- Remove no longer needed KERNEL_VERSION checks. We are now in the
|
|
kernel proper so they are no longer needed.
|
|
|
|
2.0.6 - Major bugfix to make compatible with other kernel changes.
|
|
|
|
- Initialize the mftbmp address space properly now that there are more
|
|
fields in the struct address_space. This was leading to hangs and
|
|
oopses on umount since 2.5.12 because of changes to other parts of
|
|
the kernel. We probably want a kernel generic init_address_space()
|
|
function...
|
|
- Drop BKL from ntfs_readdir() after consultation with Al Viro. The
|
|
only caller of ->readdir() is vfs_readdir() which holds i_sem during
|
|
the call, and i_sem is sufficient protection against changes in the
|
|
directory inode (including ->i_size).
|
|
- Use generic_file_llseek() for directories (as opposed to
|
|
default_llseek()) as this downs i_sem instead of the BKL which is
|
|
what we now need for exclusion against ->f_pos changes considering we
|
|
no longer take the BKL in ntfs_readdir().
|
|
|
|
2.0.5 - Major bugfix. Buffer overflow in extent inode handling.
|
|
|
|
- No need to set old blocksize in super.c::ntfs_fill_super() as the
|
|
VFS does so via invocation of deactivate_super() calling
|
|
fs->fill_super() calling block_kill_super() which does it.
|
|
- BKL moved from VFS into dir.c::ntfs_readdir(). (Linus Torvalds)
|
|
-> Do we really need it? I don't think so as we have exclusion on
|
|
the directory ntfs_inode rw_semaphore mrec_lock. We mmight have to
|
|
move the ->f_pos accesses under the mrec_lock though. Check this...
|
|
- Fix really, really, really stupid buffer overflow in extent inode
|
|
handling in mft.c::map_extent_mft_record().
|
|
|
|
2.0.4 - Cleanups and updates for kernel 2.5.11.
|
|
|
|
- Add documentation on how to use the MD driver to be able to use NTFS
|
|
stripe and volume sets in Linux and generally cleanup documentation
|
|
a bit.
|
|
Remove all uses of kdev_t in favour of struct block_device *:
|
|
- Change compress.c::ntfs_file_read_compressed_block() to use
|
|
sb_getblk() instead of getblk().
|
|
- Change super.c::ntfs_fill_super() to use bdev_hardsect_size() instead
|
|
of get_hardsect_size().
|
|
- No need to get old blocksize in super.c::ntfs_fill_super() as
|
|
fs/super.c::get_sb_bdev() already does this.
|
|
- Set bh->b_bdev instead of bh->b_dev throughout aops.c.
|
|
|
|
2.0.3 - Small bug fixes, cleanups, and performance improvements.
|
|
|
|
- Remove some dead code from mft.c.
|
|
- Optimize readpage and read_block functions throughout aops.c so that
|
|
only initialized blocks are read. Non-initialized ones have their
|
|
buffer head mapped, zeroed, and set up to date, without scheduling
|
|
any i/o. Thanks to Al Viro for advice on how to avoid the device i/o.
|
|
Thanks go to Andrew Morton for spotting the below:
|
|
- Fix buglet in allocate_compression_buffers() error code path.
|
|
- Call flush_dcache_page() after modifying page cache page contents in
|
|
ntfs_file_readpage().
|
|
- Check for existence of page buffers throughout aops.c before calling
|
|
create_empty_buffers(). This happens when an I/O error occurs and the
|
|
read is retried. (It also happens once writing is implemented so that
|
|
needed doing anyway but I had left it for later...)
|
|
- Don't BUG_ON() uptodate and/or mapped buffers throughout aops.c in
|
|
readpage and read_block functions. Reasoning same as above (i.e. I/O
|
|
error retries and future write code paths.)
|
|
|
|
2.0.2 - Minor updates and cleanups.
|
|
|
|
- Cleanup: rename mst.c::__post_read_mst_fixup to post_write_mst_fixup
|
|
and cleanup the code a bit, removing the unused size parameter.
|
|
- Change default fmask to 0177 and update documentation.
|
|
- Change attrib.c::get_attr_search_ctx() to return the search context
|
|
directly instead of taking the address of a pointer. A return value
|
|
of NULL means the allocation failed. Updated all callers
|
|
appropriately.
|
|
- Update to 2.5.9 kernel (preserving backwards compatibility) by
|
|
replacing all occurences of page->buffers with page_buffers(page).
|
|
- Fix minor bugs in runlist merging, also minor cleanup.
|
|
- Updates to bootsector layout and mft mirror contents descriptions.
|
|
- Small bug fix in error detection in unistr.c and some cleanups.
|
|
- Grow name buffer allocations in unistr.c in aligned mutlipled of 64
|
|
bytes.
|
|
|
|
2.0.1 - Minor updates.
|
|
|
|
- Make default umask correspond to documentation.
|
|
- Improve documentation.
|
|
- Set default mode to include execute bit. The {u,f,d}mask can be used
|
|
to take it away if desired. This allows binaries to be executed from
|
|
a mounted ntfs partition.
|
|
|
|
2.0.0 - New version number. Remove TNG from the name. Now in the kernel.
|
|
|
|
- Add kill_super, just keeping up with the vfs changes in the kernel.
|
|
- Repeat some changes from tng-0.0.8 that somehow got lost on the way
|
|
from the CVS import into BitKeeper.
|
|
- Begin to implement proper handling of allocated_size vs
|
|
initialized_size vs data_size (i.e. i_size). Done are
|
|
mft.c::ntfs_mft_readpage(), aops.c::end_buffer_read_index_async(),
|
|
and attrib.c::load_attribute_list().
|
|
- Lock the runlist in attrib.c::load_attribute_list() while using it.
|
|
- Fix memory leak in ntfs_file_read_compressed_block() and generally
|
|
clean up compress.c a little, removing some uncommented/unused debug
|
|
code.
|
|
- Tidy up dir.c a little bit.
|
|
- Don't bother getting the runlist in inode.c::ntfs_read_inode().
|
|
- Merge mft.c::ntfs_mft_readpage() and aops.c::ntfs_index_readpage()
|
|
creating aops.c::ntfs_mst_readpage(), improving the handling of
|
|
holes and overflow in the process and implementing the correct
|
|
equivalent of ntfs_file_get_block() in ntfs_mst_readpage() itself.
|
|
I am aiming for correctness at the moment. Modularisation can come
|
|
later.
|
|
- Rename aops.c::end_buffer_read_index_async() to
|
|
end_buffer_read_mst_async() and optimize the overflow checking and
|
|
handling.
|
|
- Use the host of the mftbmp address space mapping to hold the ntfs
|
|
volume. This is needed so the async i/o completion handler can
|
|
retrieve a pointer to the volume. Hopefully this will not cause
|
|
problems elsewhere in the kernel... Otherwise will need to use a
|
|
fake inode.
|
|
- Complete implementation of proper handling of allocated_size vs
|
|
initialized_size vs data_size (i.e. i_size) in whole driver.
|
|
Basically aops.c is now completely rewritten.
|
|
- Change NTFS driver name to just NTFS and set version number to 2.0.0
|
|
to make a clear distinction from the old driver which is still on
|
|
version 1.1.22.
|
|
|
|
tng-0.0.8 - 08/03/2002 - Now using BitKeeper, http://linux-ntfs.bkbits.net/
|
|
|
|
- Replace bdevname(sb->s_dev) with sb->s_id.
|
|
- Remove now superfluous new-line characters in all callers of
|
|
ntfs_debug().
|
|
- Apply kludge in ntfs_read_inode(), setting i_nlink to 1 for
|
|
directories. Without this the "find" utility gets very upset which is
|
|
fair enough as Linux/Unix do not support directory hard links.
|
|
- Further runlist merging work. (Richard Russon)
|
|
- Backwards compatibility for gcc-2.95. (Richard Russon)
|
|
- Update to kernel 2.5.5-pre1 and rediff the now tiny patch.
|
|
- Convert to new filesystem declaration using ->ntfs_get_sb() and
|
|
replacing ntfs_read_super() with ntfs_fill_super().
|
|
- Set s_maxbytes to MAX_LFS_FILESIZE to avoid page cache page index
|
|
overflow on 32-bit architectures.
|
|
- Cleanup upcase loading code to use ntfs_(un)map_page().
|
|
- Disable/reenable preemtion in critical sections of compession engine.
|
|
- Replace device size determination in ntfs_fill_super() with
|
|
sb->s_bdev->bd_inode->i_size (in bytes) and remove now superfluous
|
|
function super.c::get_nr_blocks().
|
|
- Implement a mount time option (show_inodes) allowing choice of which
|
|
types of inode names readdir() returns and modify ntfs_filldir()
|
|
accordingly. There are several parameters to show_inodes:
|
|
system: system files
|
|
win32: long file names (including POSIX file names) [DEFAULT]
|
|
long: same as win32
|
|
dos: short file names only (excluding POSIX file names)
|
|
short: same as dos
|
|
posix: same as both win32 and dos
|
|
all: all file names
|
|
Note that the options are additive, i.e. specifying:
|
|
-o show_inodes=system,show_inodes=win32,show_inodes=dos
|
|
is the same as specifying:
|
|
-o show_inodes=all
|
|
Note that the "posix" and "all" options will show all directory
|
|
names, BUT the link count on each directory inode entry is set to 1,
|
|
due to Linux not supporting directory hard links. This may well
|
|
confuse some userspace applications, since the directory names will
|
|
have the same inode numbers. Thus it is NOT advisable to use the
|
|
"posix" or "all" options. We provide them only for completeness sake.
|
|
- Add copies of allocated_size, initialized_size, and compressed_size to
|
|
the ntfs inode structure and set them up in
|
|
inode.c::ntfs_read_inode(). These reflect the unnamed data attribute
|
|
for files and the index allocation attribute for directories.
|
|
- Add copies of allocated_size and initialized_size to ntfs inode for
|
|
$BITMAP attribute of large directories and set them up in
|
|
inode.c::ntfs_read_inode().
|
|
- Add copies of allocated_size and initialized_size to ntfs volume for
|
|
$BITMAP attribute of $MFT and set them up in
|
|
super.c::load_system_files().
|
|
- Parse deprecated ntfs driver options (iocharset, show_sys_files,
|
|
posix, and utf8) and tell user what the new options to use are. Note
|
|
we still do support them but they will be removed with kernel 2.7.x.
|
|
- Change all occurences of integer long long printf formatting to hex
|
|
as printk() will not support long long integer format if/when the
|
|
div64 patch goes into the kernel.
|
|
- Make slab caches have stable names and change the names to what they
|
|
were intended to be. These changes are required/made possible by the
|
|
new slab cache name handling which removes the length limitation by
|
|
requiring the caller of kmem_cache_create() to supply a stable name
|
|
which is then referenced but not copied.
|
|
- Rename run_list structure to run_list_element and create a new
|
|
run_list structure containing a pointer to a run_list_element
|
|
structure and a read/write semaphore. Adapt all users of runlists
|
|
to new scheme and take and release the lock as needed. This fixes a
|
|
nasty race as the run_list changes even when inodes are locked for
|
|
reading and even when the inode isn't locked at all, so we really
|
|
needed the serialization. We use a semaphore rather than a spinlock
|
|
as memory allocations can sleep and doing everything GFP_ATOMIC
|
|
would be silly.
|
|
- Cleanup read_inode() removing all code checking for lowest_vcn != 0.
|
|
This can never happen due to the nature of lookup_attr() and how we
|
|
support attribute lists. If it did happen it would imply the inode
|
|
being corrupt.
|
|
- Check for lowest_vcn != 0 in ntfs_read_inode() and mark the inode as
|
|
bad if found.
|
|
- Update to 2.5.6-pre2 changes in struct address_space.
|
|
- Use parent_ino() when accessing d_parent inode number in dir.c.
|
|
- Import Sourceforge CVS repository into BitKeeper repository:
|
|
http://linux-ntfs.bkbits.net/ntfs-tng-2.5
|
|
- Update fs/Makefile, fs/Config.help, fs/Config.in, and
|
|
Documentation/filesystems/ntfs.txt for NTFS TNG.
|
|
- Create kernel configuration option controlling whether debugging
|
|
is enabled or not.
|
|
- Add the required export of end_buffer_io_sync() from the patches
|
|
directory to the kernel code.
|
|
- Update inode.c::ntfs_show_options() with show_inodes mount option.
|
|
- Update errors mount option.
|
|
|
|
tng-0.0.7 - 13/02/2002 - The driver is now feature complete for read-only!
|
|
|
|
- Cleanup mft.c and it's debug/error output in particular. Fix a minor
|
|
bug in mapping of extent inodes. Update all the comments to fit all
|
|
the recent code changes.
|
|
- Modify vcn_to_lcn() to cope with entirely unmapped runlists.
|
|
- Cleanups in compress.c, mostly comments and folding help.
|
|
- Implement attrib.c::map_run_list() as a generic helper.
|
|
- Make compress.c::ntfs_file_read_compressed_block() use map_run_list()
|
|
thus making code shorter and enabling attribute list support.
|
|
- Cleanup incorrect use of [su]64 with %L printf format specifier in
|
|
all source files. Type casts to [unsigned] long long added to correct
|
|
the mismatches (important for architectures which have long long not
|
|
being 64 bits).
|
|
- Merge async io completion handlers for directory indexes and $MFT
|
|
data into one by setting the index_block_size{_bits} of the ntfs
|
|
inode for $MFT to the mft_record_size{_bits} of the ntfs_volume.
|
|
- Cleanup aops.c, update comments.
|
|
- Make ntfs_file_get_block() use map_run_list() so all files now
|
|
support attribute lists.
|
|
- Make ntfs_dir_readpage() almost verbatim copy of
|
|
block_read_full_page() by using ntfs_file_get_block() with only real
|
|
difference being the use of our own async io completion handler
|
|
rather than the default one, thus reducing the amount of code and
|
|
automatically enabling attribute list support for directory indices.
|
|
- Fix bug in load_attribute_list() - forgot to call brelse in error
|
|
code path.
|
|
- Change parameters to find_attr() and lookup_attr(). We no longer
|
|
pass in the upcase table and its length. These can be gotten from
|
|
ctx->ntfs_ino->vol->upcase{_len}. Update all callers.
|
|
- Cleanups in attrib.c.
|
|
- Implement merging of runlists, attrib.c::merge_run_lists() and its
|
|
helpers. (Richard Russon)
|
|
- Attribute lists part 2, attribute extents and multi part runlists:
|
|
enable proper support for LCN_RL_NOT_MAPPED and automatic mapping of
|
|
further runlist parts via attrib.c::map_run_list().
|
|
- Tiny endianness bug fix in decompress_mapping_pairs().
|
|
|
|
tng-0.0.6 - Encrypted directories, bug fixes, cleanups, debugging enhancements.
|
|
|
|
- Enable encrypted directories. (Their index root is marked encrypted
|
|
to indicate that new files in that directory should be created
|
|
encrypted.)
|
|
- Fix bug in NInoBmpNonResident() macro. (Cut and paste error.)
|
|
- Enable $Extend system directory. Most (if not all) extended system
|
|
files do not have unnamed data attributes so ntfs_read_inode() had to
|
|
special case them but that is ok, as the special casing recovery
|
|
happens inside an error code path so there is zero slow down in the
|
|
normal fast path. The special casing is done by introducing a new
|
|
function inode.c::ntfs_is_extended_system_file() which checks if any
|
|
of the hard links in the inode point to $Extend as being their parent
|
|
directory and if they do we assume this is an extended system file.
|
|
- Create a sysctl/proc interface to allow {dis,en}abling of debug output
|
|
when compiled with -DDEBUG. Default is debug messages to be disabled.
|
|
To enable them, one writes a non-zero value to /proc/sys/fs/ntfs-debug
|
|
(if /proc is enabled) or uses sysctl(2) to effect the same (if sysctl
|
|
interface is enabled). Inspired by old ntfs driver.
|
|
- Add debug_msgs insmod/kernel boot parameter to set whether debug
|
|
messages are {dis,en}abled. This is useful to enable debug messages
|
|
during ntfs initialization and is the only way to activate debugging
|
|
when the sysctl interface is not enabled.
|
|
- Cleanup debug output in various places.
|
|
- Remove all dollar signs ($) from the source (except comments) to
|
|
enable compilation on architectures whose gcc compiler does not
|
|
support dollar signs in the names of variables/constants. Attribute
|
|
types now start with AT_ instead of $ and $I30 is now just I30.
|
|
- Cleanup ntfs_lookup() and add consistency check of sequence numbers.
|
|
- Load complete runlist for $MFT/$BITMAP during mount and cleanup
|
|
access functions. This means we now cope with $MFT/$BITMAP being
|
|
spread accross several mft records.
|
|
- Disable modification of mft_zone_multiplier on remount. We can always
|
|
reenable this later on if we really want to, but we will need to make
|
|
sure we readjust the mft_zone size / layout accordingly.
|
|
|
|
tng-0.0.5 - Modernize for 2.5.x and further in line-ing with Al Viro's comments.
|
|
|
|
- Use sb_set_blocksize() instead of set_blocksize() and verify the
|
|
return value.
|
|
- Use sb_bread() instead of bread() throughout.
|
|
- Add index_vcn_size{_bits} to ntfs_inode structure to store the size
|
|
of a directory index block vcn. Apply resulting simplifications in
|
|
dir.c everywhere.
|
|
- Fix a small bug somewhere (but forgot what it was).
|
|
- Change ntfs_{debug,error,warning} to enable gcc to do type checking
|
|
on the printf-format parameter list and fix bugs reported by gcc
|
|
as a result. (Richard Russon)
|
|
- Move inode allocation strategy to Al's new stuff but maintain the
|
|
divorce of ntfs_inode from struct inode. To achieve this we have two
|
|
separate slab caches, one for big ntfs inodes containing a struct
|
|
inode and pure ntfs inodes and at the same time fix some faulty
|
|
error code paths in ntfs_read_inode().
|
|
- Show mount options in proc (inode.c::ntfs_show_options()).
|
|
|
|
tng-0.0.4 - Big changes, getting in line with Al Viro's comments.
|
|
|
|
- Modified (un)map_mft_record functions to be common for read and write
|
|
case. To specify which is which, added extra parameter at front of
|
|
parameter list. Pass either READ or WRITE to this, each has the
|
|
obvious meaning.
|
|
- General cleanups to allow for easier folding in vi.
|
|
- attrib.c::decompress_mapping_pairs() now accepts the old runlist
|
|
argument, and invokes attrib.c::merge_run_lists() to merge the old
|
|
and the new runlists.
|
|
- Removed attrib.c::find_first_attr().
|
|
- Implemented loading of attribute list and complete runlist for $MFT.
|
|
This means we now cope with $MFT being spread across several mft
|
|
records.
|
|
- Adapt to 2.5.2-pre9 and the changed create_empty_buffers() syntax.
|
|
- Adapt major/minor/kdev_t/[bk]devname stuff to new 2.5.x kernels.
|
|
- Make ntfs_volume be allocated via kmalloc() instead of using a slab
|
|
cache. There are too little ntfs_volume structures at any one time
|
|
to justify a private slab cache.
|
|
- Fix bogus kmap() use in async io completion. Now use kmap_atomic().
|
|
Use KM_BIO_IRQ on advice from IRC/kernel...
|
|
- Use ntfs_map_page() in map_mft_record() and create ->readpage method
|
|
for reading $MFT (ntfs_mft_readpage). In the process create dedicated
|
|
address space operations (ntfs_mft_aops) for $MFT inode mapping. Also
|
|
removed the now superfluous exports from the kernel core patch.
|
|
- Fix a bug where kfree() was used insted of ntfs_free().
|
|
- Change map_mft_record() to take ntfs_inode as argument instead of
|
|
vfs inode. Dito for unmap_mft_record(). Adapt all callers.
|
|
- Add pointer to ntfs_volume to ntfs_inode.
|
|
- Add mft record number and sequence number to ntfs_inode. Stop using
|
|
i_ino and i_generation for in-driver purposes.
|
|
- Implement attrib.c::merge_run_lists(). (Richard Russon)
|
|
- Remove use of proper inodes by extent inodes. Move i_ino and
|
|
i_generation to ntfs_inode to do this. Apply simplifications that
|
|
result and remove iget_no_wait(), etc.
|
|
- Pass ntfs_inode everywhere in the driver (used to be struct inode).
|
|
- Add reference counting in ntfs_inode for the ntfs inode itself and
|
|
for the mapped mft record.
|
|
- Extend mft record mapping so we can (un)map extent mft records (new
|
|
functions (un)map_extent_mft_record), and so mappings are reference
|
|
counted and don't have to happen twice if already mapped - just ref
|
|
count increases.
|
|
- Add -o iocharset as alias to -o nls for backwards compatibility.
|
|
- The latest core patch is now tiny. In fact just a single additional
|
|
export is necessary over the base kernel.
|
|
|
|
tng-0.0.3 - Cleanups, enhancements, bug fixes.
|
|
|
|
- Work on attrib.c::decompress_mapping_pairs() to detect base extents
|
|
and setup the runlist appropriately using knowledge provided by the
|
|
sizes in the base attribute record.
|
|
- Balance the get_/put_attr_search_ctx() calls so we don't leak memory
|
|
any more.
|
|
- Introduce ntfs_malloc_nofs() and ntfs_free() to allocate/free a single
|
|
page or use vmalloc depending on the amount of memory requested.
|
|
- Cleanup error output. The __FUNCTION__ "(): " is now added
|
|
automatically. Introduced a new header file debug.h to support this
|
|
and also moved ntfs_debug() function into it.
|
|
- Make reading of compressed files more intelligent and especially get
|
|
rid of the vmalloc_nofs() from readpage(). This now uses per CPU
|
|
buffers (allocated at first mount with cluster size <= 4kiB and
|
|
deallocated on last umount with cluster size <= 4kiB), and
|
|
asynchronous io for the compressed data using a list of buffer heads.
|
|
Er, we use synchronous io as async io only works on whole pages
|
|
covered by buffers and not on individual buffer heads...
|
|
- Bug fix for reading compressed files with sparse compression blocks.
|
|
|
|
tng-0.0.2 - Now handles larger/fragmented/compressed volumes/files/dirs.
|
|
|
|
- Fixed handling of directories when cluster size exceeds index block
|
|
size.
|
|
- Hide DOS only name space directory entries from readdir() but allow
|
|
them in lookup(). This should fix the problem that Linux doesn't
|
|
support directory hard links, while still allowing access to entries
|
|
via their short file name. This also has the benefit of mimicking
|
|
what Windows users are used to, so it is the ideal solution.
|
|
- Implemented sync_page everywhere so no more hangs in D state when
|
|
waiting for a page.
|
|
- Stop using bforget() in favour of brelse().
|
|
- Stop locking buffers unnecessarily.
|
|
- Implemented compressed files (inode->mapping contains uncompressed
|
|
data, raw compressed data is currently bread() into a vmalloc()ed
|
|
memory buffer).
|
|
- Enable compressed directories. (Their index root is marked compressed
|
|
to indicate that new files in that directory should be created
|
|
compressed.)
|
|
- Use vsnprintf rather than vsprintf in the ntfs_error and ntfs_warning
|
|
functions. (Thanks to Will Dyson for pointing this out.)
|
|
- Moved the ntfs_inode and ntfs_volume (the former ntfs_inode_info and
|
|
ntfs_sb_info) out of the common inode and super_block structures and
|
|
started using the generic_ip and generic_sbp pointers instead. This
|
|
makes ntfs entirely private with respect to the kernel tree.
|
|
- Detect compiler version and abort with error message if gcc less than
|
|
2.96 is used.
|
|
- Fix bug in name comparison function in unistr.c.
|
|
- Implement attribute lists part 1, the infrastructure: search contexts
|
|
and operations, find_external_attr(), lookup_attr()) and make the
|
|
code use the infrastructure.
|
|
- Fix stupid buffer overflow bug that became apparent on larger run
|
|
list containing attributes.
|
|
- Fix bugs in readdir() that became apparent on larger directories.
|
|
|
|
The driver is now really useful and survives the test
|
|
find . -type f -exec md5sum "{}" \;
|
|
without any error messages on a over 1GiB sized partition with >16k
|
|
files on it, including compressed files and directories and many files
|
|
and directories with attribute lists.
|
|
|
|
tng-0.0.1 - The first useful version.
|
|
|
|
- Added ntfs_lookup().
|
|
- Added default upcase generation and handling.
|
|
- Added compile options to be shown on module init.
|
|
- Many bug fixes that were "hidden" before.
|
|
- Update to latest kernel.
|
|
- Added ntfs_readdir().
|
|
- Added file operations for mmap(), read(), open() and llseek(). We just
|
|
use the generic ones. The whole point of going through implementing
|
|
readpage() methods and where possible get_block() call backs is that
|
|
this allows us to make use of the generic high level methods provided
|
|
by the kernel.
|
|
|
|
The driver is now actually useful! Yey. (-: It undoubtedly has got bugs
|
|
though and it doesn't implement accesssing compressed files yet. Also,
|
|
accessing files with attribute list attributes is not implemented yet
|
|
either. But for small or simple filesystems it should work and allow
|
|
you to list directories, use stat on directory entries and the file
|
|
system, open, read, mmap and llseek around in files. A big mile stone
|
|
has been reached!
|
|
|
|
tng-0.0.0 - Initial version tag.
|
|
|
|
Initial driver implementation. The driver can mount and umount simple
|
|
NTFS filesystems (i.e. ones without attribute lists in the system
|
|
files). If the mount fails there might be problems in the error handling
|
|
code paths, so be warned. Otherwise it seems to be loading the system
|
|
files nicely and the mft record read mapping/unmapping seems to be
|
|
working nicely, too. Proof of inode metadata in the page cache and non-
|
|
resident file unnamed stream data in the page cache concepts is thus
|
|
complete.
|