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