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Diffstat (limited to 'fs/ntfs/ChangeLog')
| -rw-r--r-- | fs/ntfs/ChangeLog | 1702 |
1 files changed, 0 insertions, 1702 deletions
diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog deleted file mode 100644 index 37c11e194372..000000000000 --- a/fs/ntfs/ChangeLog +++ /dev/null @@ -1,1702 +0,0 @@ -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. |