-ToDo:
+ToDo/Notes:
- Find and fix bugs.
- - Implement aops->set_page_dirty() in order to take control of buffer
- dirtying. Not having it means if page_has_buffers(), all buffers
- will be dirtied with the page. And if not they won't be. That is
- fine for the moment but will break once we enable metadata updates.
- - Implement sops->dirty_inode() to implement {a,m,c} time updates and
- such things.
- - Implement sops->write_inode().
+ - Checkpoint or disable the user space journal ($UsnJrnl).
- In between ntfs_prepare/commit_write, need exclusion between
simultaneous file extensions. Need perhaps an NInoResizeUnderway()
flag which we can set in ntfs_prepare_write() and clear again in
OTOH, perhaps i_sem, which is held accross generic_file_write is
sufficient for synchronisation here. We then just need to make sure
ntfs_readpage/writepage/truncate interoperate properly with us.
-
-2.1.8 - Handle $MFT mirror and $LogFile, improve time ihandling, and cleanups.
+ UPDATE: The above is all ok as it is due to i_sem held. The only
+ thing that needs to be checked is ntfs_writepage() which does not
+ hold i_sem. It cannot change i_size but it needs to cope with a
+ concurrent i_size change.
+ - 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.
+ - Enable the code for setting the NT4 compatibility flag when we start
+ making NTFS 1.2 specific modifications.
+
+2.1.23-WIP
+
+ - 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.
+
+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_sem 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 GibuĊa 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
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 run list element. This should improve performance
+ 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.
- 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 run list merging code (fs/ntfs/attrib.c) in sync with
+ - 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 run lists are always left unmodified instead of
+ fails the original runlists are always left unmodified instead of
being silently corrupted.
- Misc typo fixes.
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 run list merging, also minor cleanup.
+ - 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
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 run list in attrib.c::load_attribute_list() while using it.
+ - 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 run list in inode.c::ntfs_read_inode().
+ - 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
- 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 run list merging work. (Richard Russon)
+ - 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 file system declaration using ->ntfs_get_sb() and
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]
+ win32: long file names (including POSIX file names) [DEFAULT]
long: same as win32
- dos: short file names only (excluding POSIX file names)
+ dos: short file names only (excluding POSIX file names)
short: same as dos
posix: same as both win32 and dos
- all: all file names
+ 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:
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 run lists
+ 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
- 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 run lists.
+ - 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()
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 run lists, attrib.c::merge_run_lists() and its
+ - Implement merging of runlists, attrib.c::merge_run_lists() and its
helpers. (Richard Russon)
- - Attribute lists part 2, attribute extents and multi part run lists:
+ - Attribute lists part 2, attribute extents and multi part runlists:
enable proper support for LCN_RL_NOT_MAPPED and automatic mapping of
- further run list parts via attrib.c::map_run_list().
+ 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.
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 run list for $MFT/$BITMAP during mount and cleanup
+ - 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
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 run list
+ - 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 run lists.
+ and the new runlists.
- Removed attrib.c::find_first_attr().
- - Implemented loading of attribute list and complete run list for $MFT.
+ - 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.
tng-0.0.3 - Cleanups, enhancements, bug fixes.
- Work on attrib.c::decompress_mapping_pairs() to detect base extents
- and setup the run list appropriately using knowledge provided by the
+ 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.
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.
-
git://git.onelab.eu / linux-2.6.git / blobdiff