+++ /dev/null
-ToDo/Notes:
- - Find and fix bugs.
- - The only places in the kernel where a file is resized are
- ntfs_file_write*() and ntfs_truncate() for both of which i_mutex is
- held. Just have to be careful in read-/writepage and other helpers
- not running under i_mutex that we play nice. Also need to be careful
- with initialized_size extension in ntfs_file_write*() and writepage.
- UPDATE: The only things that need to be checked are the compressed
- write and the other attribute resize/write cases like index
- attributes, etc. For now none of these are implemented so are safe.
- - Implement filling in of holes in aops.c::ntfs_writepage() and its
- helpers.
- - Implement mft.c::sync_mft_mirror_umount(). We currently will just
- leave the volume dirty on umount if the final iput(vol->mft_ino)
- causes a write of any mirrored mft records due to the mft mirror
- inode having been discarded already. Whether this can actually ever
- happen is unclear however so it is worth waiting until someone hits
- the problem.
-
-2.1.29 - Fix a deadlock at mount time.
-
- - During mount the VFS holds s_umount lock on the superblock. So when
- we try to empty the journal $LogFile contents by calling
- ntfs_attr_set() when the machine does not have much memory and the
- journal is large ntfs_attr_set() results in the VM trying to balance
- dirty pages which in turn tries to that the s_umount lock and thus we
- get a deadlock. The solution is to not use ntfs_attr_set() and
- instead do the zeroing by hand at the block level rather than page
- cache level.
- - Fix sparse warnings.
-
-2.1.28 - Fix a deadlock.
-
- - Fix deadlock in fs/ntfs/inode.c::ntfs_put_inode(). Thanks to Sergey
- Vlasov for the report and detailed analysis of the deadlock. The fix
- involved getting rid of ntfs_put_inode() altogether and hence NTFS no
- longer has a ->put_inode super operation.
-
-2.1.27 - Various bug fixes and cleanups.
-
- - Fix two compiler warnings on Alpha. Thanks to Andrew Morton for
- reporting them.
- - Fix an (innocent) off-by-one error in the runlist code.
- - Fix a buggette in an "should be impossible" case handling where we
- continued the attribute lookup loop instead of aborting it.
- - Use buffer_migrate_page() for the ->migratepage function of all ntfs
- address space operations.
- - Fix comparison of $MFT and $MFTMirr to not bail out when there are
- unused, invalid mft records which are the same in both $MFT and
- $MFTMirr.
- - Add support for sparse files which have a compression unit of 0.
- - Remove all the make_bad_inode() calls. This should only be called
- from read inode and new inode code paths.
- - Limit name length in fs/ntfs/unistr.c::ntfs_nlstoucs() to maximum
- allowed by NTFS, i.e. 255 Unicode characters, not including the
- terminating NULL (which is not stored on disk).
- - Improve comments on file attribute flags in fs/ntfs/layout.h.
- - Fix a bug in fs/ntfs/inode.c::ntfs_read_locked_index_inode() where we
- forgot to update a temporary variable so loading index inodes which
- have an index allocation attribute failed.
- - Add a missing call to flush_dcache_mft_record_page() in
- fs/ntfs/inode.c::ntfs_write_inode().
- - Handle the recently introduced -ENAMETOOLONG return value from
- fs/ntfs/unistr.c::ntfs_nlstoucs() in fs/ntfs/namei.c::ntfs_lookup().
- - Semaphore to mutex conversion. (Ingo Molnar)
-
-2.1.26 - Minor bug fixes and updates.
-
- - Fix a potential overflow in file.c where a cast to s64 was missing in
- a left shift of a page index.
- - The struct inode has had its i_sem semaphore changed to a mutex named
- i_mutex.
- - We have struct kmem_cache now so use it instead of the typedef
- kmem_cache_t. (Pekka Enberg)
- - Implement support for sector sizes above 512 bytes (up to the maximum
- supported by NTFS which is 4096 bytes).
- - Do more detailed reporting of why we cannot mount read-write by
- special casing the VOLUME_MODIFIED_BY_CHKDSK flag.
- - Miscellaneous updates to layout.h.
- - Cope with attribute list attribute having invalid flags. Windows
- copes with this and even chkdsk does not detect or fix this so we
- have to cope with it, too. Thanks to Pawel Kot for reporting the
- problem.
-
-2.1.25 - (Almost) fully implement write(2) and truncate(2).
-
- - Change ntfs_map_runlist_nolock(), ntfs_attr_find_vcn_nolock() and
- {__,}ntfs_cluster_free() to also take an optional attribute search
- context as argument. This allows calling these functions with the
- mft record mapped. Update all callers.
- - Fix potential deadlock in ntfs_mft_data_extend_allocation_nolock()
- error handling by passing in the active search context when calling
- ntfs_cluster_free().
- - Change ntfs_cluster_alloc() to take an extra boolean parameter
- specifying whether the cluster are being allocated to extend an
- attribute or to fill a hole.
- - Change ntfs_attr_make_non_resident() to call ntfs_cluster_alloc()
- with @is_extension set to TRUE and remove the runlist terminator
- fixup code as this is now done by ntfs_cluster_alloc().
- - Change ntfs_attr_make_non_resident to take the attribute value size
- as an extra parameter. This is needed since we need to know the size
- before we can map the mft record and our callers always know it. The
- reason we cannot simply read the size from the vfs inode i_size is
- that this is not necessarily uptodate. This happens when
- ntfs_attr_make_non_resident() is called in the ->truncate call path.
- - Fix ntfs_attr_make_non_resident() to update the vfs inode i_blocks
- which is zero for a resident attribute but should no longer be zero
- once the attribute is non-resident as it then has real clusters
- allocated.
- - Add fs/ntfs/attrib.[hc]::ntfs_attr_extend_allocation(), a function to
- extend the allocation of an attributes. Optionally, the data size,
- but not the initialized size can be extended, too.
- - Implement fs/ntfs/inode.[hc]::ntfs_truncate(). It only supports
- uncompressed and unencrypted files and it never creates sparse files
- at least for the moment (making a file sparse requires us to modify
- its directory entries and we do not support directory operations at
- the moment). Also, support for highly fragmented files, i.e. ones
- whose data attribute is split across multiple extents, is severly
- limited. When such a case is encountered, EOPNOTSUPP is returned.
- - Enable ATTR_SIZE attribute changes in ntfs_setattr(). This completes
- the initial implementation of file truncation. Now both open(2)ing
- a file with the O_TRUNC flag and the {,f}truncate(2) system calls
- will resize a file appropriately. The limitations are that only
- uncompressed and unencrypted files are supported. Also, there is
- only very limited support for highly fragmented files (the ones whose
- $DATA attribute is split into multiple attribute extents).
- - In attrib.c::ntfs_attr_set() call balance_dirty_pages_ratelimited()
- and cond_resched() in the main loop as we could be dirtying a lot of
- pages and this ensures we play nice with the VM and the system as a
- whole.
- - Implement file operations ->write, ->aio_write, ->writev for regular
- files. This replaces the old use of generic_file_write(), et al and
- the address space operations ->prepare_write and ->commit_write.
- This means that both sparse and non-sparse (unencrypted and
- uncompressed) files can now be extended using the normal write(2)
- code path. There are two limitations at present and these are that
- we never create sparse files and that we only have limited support
- for highly fragmented files, i.e. ones whose data attribute is split
- across multiple extents. When such a case is encountered,
- EOPNOTSUPP is returned.
- - $EA attributes can be both resident and non-resident.
- - Use %z for size_t to fix compilation warnings. (Andrew Morton)
- - Fix compilation warnings with gcc-4.0.2 on SUSE 10.0.
- - Document extended attribute ($EA) NEED_EA flag. (Based on libntfs
- patch by Yura Pakhuchiy.)
-
-2.1.24 - Lots of bug fixes and support more clean journal states.
-
- - Support journals ($LogFile) which have been modified by chkdsk. This
- means users can boot into Windows after we marked the volume dirty.
- The Windows boot will run chkdsk and then reboot. The user can then
- immediately boot into Linux rather than having to do a full Windows
- boot first before rebooting into Linux and we will recognize such a
- journal and empty it as it is clean by definition. Note, this only
- works if chkdsk left the journal in an obviously clean state.
- - Support journals ($LogFile) with only one restart page as well as
- journals with two different restart pages. We sanity check both and
- either use the only sane one or the more recent one of the two in the
- case that both are valid.
- - Add fs/ntfs/malloc.h::ntfs_malloc_nofs_nofail() which is analogous to
- ntfs_malloc_nofs() but it performs allocations with __GFP_NOFAIL and
- hence cannot fail.
- - Use ntfs_malloc_nofs_nofail() in the two critical regions in
- fs/ntfs/runlist.c::ntfs_runlists_merge(). This means we no longer
- need to panic() if the allocation fails as it now cannot fail.
- - Fix two nasty runlist merging bugs that had gone unnoticed so far.
- Thanks to Stefano Picerno for the bug report.
- - Remove two bogus BUG_ON()s from fs/ntfs/mft.c.
- - Fix handling of valid but empty mapping pairs array in
- fs/ntfs/runlist.c::ntfs_mapping_pairs_decompress().
- - Report unrepresentable inodes during ntfs_readdir() as KERN_WARNING
- messages and include the inode number. Thanks to Yura Pakhuchiy for
- pointing this out.
- - Change ntfs_rl_truncate_nolock() to throw away the runlist if the new
- length is zero.
- - Add runlist.[hc]::ntfs_rl_punch_nolock() which punches a caller
- specified hole into a runlist.
- - Fix a bug in fs/ntfs/index.c::ntfs_index_lookup(). When the returned
- index entry is in the index root, we forgot to set the @ir pointer in
- the index context. Thanks to Yura Pakhuchiy for finding this bug.
- - Remove bogus setting of PageError in ntfs_read_compressed_block().
- - Add fs/ntfs/attrib.[hc]::ntfs_resident_attr_value_resize().
- - Fix a bug in ntfs_map_runlist_nolock() where we forgot to protect
- access to the allocated size in the ntfs inode with the size lock.
- - Fix ntfs_attr_vcn_to_lcn_nolock() and ntfs_attr_find_vcn_nolock() to
- return LCN_ENOENT when there is no runlist and the allocated size is
- zero.
- - Fix load_attribute_list() to handle the case of a NULL runlist.
- - Fix handling of sparse attributes in ntfs_attr_make_non_resident().
- - Add BUG() checks to ntfs_attr_make_non_resident() and ntfs_attr_set()
- to ensure that these functions are never called for compressed or
- encrypted attributes.
- - Fix cluster (de)allocators to work when the runlist is NULL and more
- importantly to take a locked runlist rather than them locking it
- which leads to lock reversal.
- - Truncate {a,c,m}time to the ntfs supported time granularity when
- updating the times in the inode in ntfs_setattr().
- - Fixup handling of sparse, compressed, and encrypted attributes in
- fs/ntfs/inode.c::ntfs_read_locked_{,attr_,index_}inode(),
- fs/ntfs/aops.c::ntfs_{read,write}page().
- - Make ntfs_write_block() not instantiate sparse blocks if they contain
- only zeroes.
- - Optimize fs/ntfs/aops.c::ntfs_write_block() by extending the page
- lock protection over the buffer submission for i/o which allows the
- removal of the get_bh()/put_bh() pairs for each buffer.
- - Fix fs/ntfs/aops.c::ntfs_{read,write}_block() to handle the case
- where a concurrent truncate has truncated the runlist under our feet.
- - Fix page_has_buffers()/page_buffers() handling in fs/ntfs/aops.c.
- - In fs/ntfs/aops.c::ntfs_end_buffer_async_read(), use a bit spin lock
- in the first buffer head instead of a driver global spin lock to
- improve scalability.
- - Minor fix to error handling and error message display in
- fs/ntfs/aops.c::ntfs_prepare_nonresident_write().
- - Change the mount options {u,f,d}mask to always parse the number as
- an octal number to conform to how chmod(1) works, too. Thanks to
- Giuseppe Bilotta and Horst von Brand for pointing out the errors of
- my ways.
- - Fix various bugs in the runlist merging code. (Based on libntfs
- changes by Richard Russon.)
- - Fix sparse warnings that have crept in over time.
- - Change ntfs_cluster_free() to require a write locked runlist on entry
- since we otherwise get into a lock reversal deadlock if a read locked
- runlist is passed in. In the process also change it to take an ntfs
- inode instead of a vfs inode as parameter.
- - Fix the definition of the CHKD ntfs record magic. It had an off by
- two error causing it to be CHKB instead of CHKD.
- - Fix a stupid bug in __ntfs_bitmap_set_bits_in_run() which caused the
- count to become negative and hence we had a wild memset() scribbling
- all over the system's ram.
-
-2.1.23 - Implement extension of resident files and make writing safe as well as
- many bug fixes, cleanups, and enhancements...
-
- - Add printk rate limiting for ntfs_warning() and ntfs_error() when
- compiled without debug. This avoids a possible denial of service
- attack. Thanks to Carl-Daniel Hailfinger from SuSE for pointing this
- out.
- - Fix compilation warnings on ia64. (Randy Dunlap)
- - Use i_size_{read,write}() instead of reading i_size by hand and cache
- the value where apropriate.
- - Add size_lock to the ntfs_inode structure. This is an rw spinlock
- and it locks against access to the inode sizes. Note, ->size_lock
- is also accessed from irq context so you must use the _irqsave and
- _irqrestore lock and unlock functions, respectively. Protect all
- accesses to allocated_size, initialized_size, and compressed_size.
- - Minor optimization to fs/ntfs/super.c::ntfs_statfs() and its helpers.
- - Implement extension of resident files in the regular file write code
- paths (fs/ntfs/aops.c::ntfs_{prepare,commit}_write()). At present
- this only works until the data attribute becomes too big for the mft
- record after which we abort the write returning -EOPNOTSUPP from
- ntfs_prepare_write().
- - Add disable_sparse mount option together with a per volume sparse
- enable bit which is set appropriately and a per inode sparse disable
- bit which is preset on some system file inodes as appropriate.
- - Enforce that sparse support is disabled on NTFS volumes pre 3.0.
- - Fix a bug in fs/ntfs/runlist.c::ntfs_mapping_pairs_decompress() in
- the creation of the unmapped runlist element for the base attribute
- extent.
- - Split ntfs_map_runlist() into ntfs_map_runlist() and a non-locking
- helper ntfs_map_runlist_nolock() which is used by ntfs_map_runlist().
- This allows us to map runlist fragments with the runlist lock already
- held without having to drop and reacquire it around the call. Adapt
- all callers.
- - Change ntfs_find_vcn() to ntfs_find_vcn_nolock() which takes a locked
- runlist. This allows us to find runlist elements with the runlist
- lock already held without having to drop and reacquire it around the
- call. Adapt all callers.
- - Change time to u64 in time.h::ntfs2utc() as it otherwise generates a
- warning in the do_div() call on sparc32. Thanks to Meelis Roos for
- the report and analysis of the warning.
- - Fix a nasty runlist merge bug when merging two holes.
- - Set the ntfs_inode->allocated_size to the real allocated size in the
- mft record for resident attributes (fs/ntfs/inode.c).
- - Small readability cleanup to use "a" instead of "ctx->attr"
- everywhere (fs/ntfs/inode.c).
- - Make fs/ntfs/namei.c::ntfs_get_{parent,dentry} static and move the
- definition of ntfs_export_ops from fs/ntfs/super.c to namei.c. Also,
- declare ntfs_export_ops in fs/ntfs/ntfs.h.
- - Correct sparse file handling. The compressed values need to be
- checked and set in the ntfs inode as done for compressed files and
- the compressed size needs to be used for vfs inode->i_blocks instead
- of the allocated size, again, as done for compressed files.
- - Add AT_EA in addition to AT_DATA to whitelist for being allowed to be
- non-resident in fs/ntfs/attrib.c::ntfs_attr_can_be_non_resident().
- - Add fs/ntfs/attrib.c::ntfs_attr_vcn_to_lcn_nolock() used by the new
- write code.
- - Fix bug in fs/ntfs/attrib.c::ntfs_find_vcn_nolock() where after
- dropping the read lock and taking the write lock we were not checking
- whether someone else did not already do the work we wanted to do.
- - Rename fs/ntfs/attrib.c::ntfs_find_vcn_nolock() to
- ntfs_attr_find_vcn_nolock() and update all callers.
- - Add fs/ntfs/attrib.[hc]::ntfs_attr_make_non_resident().
- - Fix sign of various error return values to be negative in
- fs/ntfs/lcnalloc.c.
- - Modify ->readpage and ->writepage (fs/ntfs/aops.c) so they detect and
- handle the case where an attribute is converted from resident to
- non-resident by a concurrent file write.
- - Remove checks for NULL before calling kfree() since kfree() does the
- checking itself. (Jesper Juhl)
- - Some utilities modify the boot sector but do not update the checksum.
- Thus, relax the checking in fs/ntfs/super.c::is_boot_sector_ntfs() to
- only emit a warning when the checksum is incorrect rather than
- refusing the mount. Thanks to Bernd Casimir for pointing this
- problem out.
- - Update attribute definition handling.
- - Add NTFS_MAX_CLUSTER_SIZE and NTFS_MAX_PAGES_PER_CLUSTER constants.
- - Use NTFS_MAX_CLUSTER_SIZE in super.c instead of hard coding 0x10000.
- - Use MAX_BUF_PER_PAGE instead of variable sized array allocation for
- better code generation and one less sparse warning in fs/ntfs/aops.c.
- - Remove spurious void pointer casts from fs/ntfs/. (Pekka Enberg)
- - Use C99 style structure initialization after memory allocation where
- possible (fs/ntfs/{attrib.c,index.c,super.c}). Thanks to Al Viro and
- Pekka Enberg.
- - Stamp the transaction log ($UsnJrnl), aka user space journal, if it
- is active on the volume and we are mounting read-write or remounting
- from read-only to read-write.
- - Fix a bug in address space operations error recovery code paths where
- if the runlist was not mapped at all and a mapping error occured we
- would leave the runlist locked on exit to the function so that the
- next access to the same file would try to take the lock and deadlock.
- - Detect the case when Windows has been suspended to disk on the volume
- to be mounted and if this is the case do not allow (re)mounting
- read-write. This is done by parsing hiberfil.sys if present.
- - Fix several occurences of a bug where we would perform 'var & ~const'
- with a 64-bit variable and a int, i.e. 32-bit, constant. This causes
- the higher order 32-bits of the 64-bit variable to be zeroed. To fix
- this cast the 'const' to the same 64-bit type as 'var'.
- - Change the runlist terminator of the newly allocated cluster(s) to
- LCN_ENOENT in ntfs_attr_make_non_resident(). Otherwise the runlist
- code gets confused.
- - Add an extra parameter @last_vcn to ntfs_get_size_for_mapping_pairs()
- and ntfs_mapping_pairs_build() to allow the runlist encoding to be
- partial which is desirable when filling holes in sparse attributes.
- Update all callers.
- - Change ntfs_map_runlist_nolock() to only decompress the mapping pairs
- if the requested vcn is inside it. Otherwise we get into problems
- when we try to map an out of bounds vcn because we then try to map
- the already mapped runlist fragment which causes
- ntfs_mapping_pairs_decompress() to fail and return error. Update
- ntfs_attr_find_vcn_nolock() accordingly.
- - Fix a nasty deadlock that appeared in recent kernels.
- 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.
- - Fix bug in mft record writing where we forgot to set the device in
- the buffers when mapping them after the VM had discarded them.
- Thanks to Martin MOKREJÅ for the bug report.
-
-2.1.22 - Many bug and race fixes and error handling improvements.
-
- - Improve error handling in fs/ntfs/inode.c::ntfs_truncate().
- - Change fs/ntfs/inode.c::ntfs_truncate() to return an error code
- instead of void and provide a helper ntfs_truncate_vfs() for the
- vfs ->truncate method.
- - Add a new ntfs inode flag NInoTruncateFailed() and modify
- fs/ntfs/inode.c::ntfs_truncate() to set and clear it appropriately.
- - Fix min_size and max_size definitions in ATTR_DEF structure in
- fs/ntfs/layout.h to be signed.
- - Add attribute definition handling helpers to fs/ntfs/attrib.[hc]:
- ntfs_attr_size_bounds_check(), ntfs_attr_can_be_non_resident(), and
- ntfs_attr_can_be_resident(), which in turn use the new private helper
- ntfs_attr_find_in_attrdef().
- - In fs/ntfs/aops.c::mark_ntfs_record_dirty(), take the
- mapping->private_lock around the dirtying of the buffer heads
- analagous to the way it is done in __set_page_dirty_buffers().
- - Ensure the mft record size does not exceed the PAGE_CACHE_SIZE at
- mount time as this cannot work with the current implementation.
- - Check for location of attribute name and improve error handling in
- general in fs/ntfs/inode.c::ntfs_read_locked_inode() and friends.
- - In fs/ntfs/aops.c::ntfs_writepage(), if the page is fully outside
- i_size, i.e. race with truncate, invalidate the buffers on the page
- so that they become freeable and hence the page does not leak.
- - Remove unused function fs/ntfs/runlist.c::ntfs_rl_merge(). (Adrian
- Bunk)
- - Fix stupid bug in fs/ntfs/attrib.c::ntfs_attr_find() that resulted in
- a NULL pointer dereference in the error code path when a corrupt
- attribute was found. (Thanks to Domen Puncer for the bug report.)
- - Add MODULE_VERSION() to fs/ntfs/super.c.
- - Make several functions and variables static. (Adrian Bunk)
- - Modify fs/ntfs/aops.c::mark_ntfs_record_dirty() so it allocates
- buffers for the page if they are not present and then marks the
- buffers belonging to the ntfs record dirty. This causes the buffers
- to become busy and hence they are safe from removal until the page
- has been written out.
- - Fix stupid bug in fs/ntfs/attrib.c::ntfs_external_attr_find() in the
- error handling code path that resulted in a BUG() due to trying to
- unmap an extent mft record when the mapping of it had failed and it
- thus was not mapped. (Thanks to Ken MacFerrin for the bug report.)
- - Drop the runlist lock after the vcn has been read in
- fs/ntfs/lcnalloc.c::__ntfs_cluster_free().
- - Rewrite handling of multi sector transfer errors. We now do not set
- PageError() when such errors are detected in the async i/o handler
- fs/ntfs/aops.c::ntfs_end_buffer_async_read(). All users of mst
- protected attributes now check the magic of each ntfs record as they
- use it and act appropriately. This has the effect of making errors
- granular per ntfs record rather than per page which solves the case
- where we cannot access any of the ntfs records in a page when a
- single one of them had an mst error. (Thanks to Ken MacFerrin for
- the bug report.)
- - Fix error handling in fs/ntfs/quota.c::ntfs_mark_quotas_out_of_date()
- where we failed to release i_mutex on the $Quota/$Q attribute inode.
- - Fix bug in handling of bad inodes in fs/ntfs/namei.c::ntfs_lookup().
- - Add mapping of unmapped buffers to all remaining code paths, i.e.
- fs/ntfs/aops.c::ntfs_write_mst_block(), mft.c::ntfs_sync_mft_mirror(),
- and write_mft_record_nolock(). From now on we require that the
- complete runlist for the mft mirror is always mapped into memory.
- - Add creation of buffers to fs/ntfs/mft.c::ntfs_sync_mft_mirror().
- - Improve error handling in fs/ntfs/aops.c::ntfs_{read,write}_block().
- - Cleanup fs/ntfs/aops.c::ntfs_{read,write}page() since we know that a
- resident attribute will be smaller than a page which makes the code
- simpler. Also make the code more tolerant to concurrent ->truncate.
-
-2.1.21 - Fix some races and bugs, rewrite mft write code, add mft allocator.
-
- - Implement extent mft record deallocation
- fs/ntfs/mft.c::ntfs_extent_mft_record_free().
- - Splitt runlist related functions off from attrib.[hc] to runlist.[hc].
- - Add vol->mft_data_pos and initialize it at mount time.
- - Rename init_runlist() to ntfs_init_runlist(), ntfs_vcn_to_lcn() to
- ntfs_rl_vcn_to_lcn(), decompress_mapping_pairs() to
- ntfs_mapping_pairs_decompress(), ntfs_merge_runlists() to
- ntfs_runlists_merge() and adapt all callers.
- - Add fs/ntfs/runlist.[hc]::ntfs_get_nr_significant_bytes(),
- ntfs_get_size_for_mapping_pairs(), ntfs_write_significant_bytes(),
- and ntfs_mapping_pairs_build(), adapted from libntfs.
- - Make fs/ntfs/lcnalloc.c::ntfs_cluster_free_from_rl_nolock() not
- static and add a declaration for it to lcnalloc.h.
- - Add fs/ntfs/lcnalloc.h::ntfs_cluster_free_from_rl() which is a static
- inline wrapper for ntfs_cluster_free_from_rl_nolock() which takes the
- cluster bitmap lock for the duration of the call.
- - Add fs/ntfs/attrib.[hc]::ntfs_attr_record_resize().
- - Implement the equivalent of memset() for an ntfs attribute in
- fs/ntfs/attrib.[hc]::ntfs_attr_set() and switch
- fs/ntfs/logfile.c::ntfs_empty_logfile() to using it.
- - Remove unnecessary casts from LCN_* constants.
- - Implement fs/ntfs/runlist.c::ntfs_rl_truncate_nolock().
- - Add MFT_RECORD_OLD as a copy of MFT_RECORD in fs/ntfs/layout.h and
- change MFT_RECORD to contain the NTFS 3.1+ specific fields.
- - Add a helper function fs/ntfs/aops.c::mark_ntfs_record_dirty() which
- marks all buffers belonging to an ntfs record dirty, followed by
- marking the page the ntfs record is in dirty and also marking the vfs
- inode containing the ntfs record dirty (I_DIRTY_PAGES).
- - Switch fs/ntfs/index.h::ntfs_index_entry_mark_dirty() to using the
- 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().
- - 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
- 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)
-
-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)
- - 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_mutex
- during the call, and i_mutex 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_mutex 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 instead 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.
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff