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1c7d469d47
updating the times in the inode in ntfs_setattr(). Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
1551 lines
85 KiB
Plaintext
1551 lines
85 KiB
Plaintext
ToDo/Notes:
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- Find and fix bugs.
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- In between ntfs_prepare/commit_write, need exclusion between
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simultaneous file extensions. This is given to us by holding i_sem
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on the inode. The only places in the kernel when a file is resized
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are prepare/commit write and truncate for both of which i_sem is
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held. Just have to be careful in readpage/writepage and all other
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helpers not running under i_sem that we play nice...
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Also need to be careful with initialized_size extention in
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ntfs_prepare_write. Basically, just be _very_ careful in this code...
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UPDATE: The only things that need to be checked are read/writepage
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which do not hold i_sem. Note writepage cannot change i_size but it
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needs to cope with a concurrent i_size change, just like readpage.
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Also both need to cope with concurrent changes to the other sizes,
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i.e. initialized/allocated/compressed size, as well.
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- Implement mft.c::sync_mft_mirror_umount(). We currently will just
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leave the volume dirty on umount if the final iput(vol->mft_ino)
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causes a write of any mirrored mft records due to the mft mirror
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inode having been discarded already. Whether this can actually ever
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happen is unclear however so it is worth waiting until someone hits
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the problem.
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- Enable the code for setting the NT4 compatibility flag when we start
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making NTFS 1.2 specific modifications.
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2.1.24-WIP
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- Support journals ($LogFile) which have been modified by chkdsk. This
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means users can boot into Windows after we marked the volume dirty.
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The Windows boot will run chkdsk and then reboot. The user can then
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immediately boot into Linux rather than having to do a full Windows
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boot first before rebooting into Linux and we will recognize such a
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journal and empty it as it is clean by definition.
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- Support journals ($LogFile) with only one restart page as well as
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journals with two different restart pages. We sanity check both and
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either use the only sane one or the more recent one of the two in the
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case that both are valid.
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- Modify fs/ntfs/malloc.h::ntfs_malloc_nofs() to do the kmalloc() based
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allocations with __GFP_HIGHMEM, analogous to how the vmalloc() based
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allocations are done.
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- Add fs/ntfs/malloc.h::ntfs_malloc_nofs_nofail() which is analogous to
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ntfs_malloc_nofs() but it performs allocations with __GFP_NOFAIL and
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hence cannot fail.
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- Use ntfs_malloc_nofs_nofail() in the two critical regions in
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fs/ntfs/runlist.c::ntfs_runlists_merge(). This means we no longer
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need to panic() if the allocation fails as it now cannot fail.
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- Fix two nasty runlist merging bugs that had gone unnoticed so far.
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Thanks to Stefano Picerno for the bug report.
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- Remove two bogus BUG_ON()s from fs/ntfs/mft.c.
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- Fix handling of valid but empty mapping pairs array in
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fs/ntfs/runlist.c::ntfs_mapping_pairs_decompress().
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- Report unrepresentable inodes during ntfs_readdir() as KERN_WARNING
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messages and include the inode number. Thanks to Yura Pakhuchiy for
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pointing this out.
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- Change ntfs_rl_truncate_nolock() to throw away the runlist if the new
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length is zero.
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- Add runlist.[hc]::ntfs_rl_punch_nolock() which punches a caller
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specified hole into a runlist.
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- Fix a bug in fs/ntfs/index.c::ntfs_index_lookup(). When the returned
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index entry is in the index root, we forgot to set the @ir pointer in
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the index context. Thanks to Yura Pakhuchiy for finding this bug.
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- Remove bogus setting of PageError in ntfs_read_compressed_block().
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- Add fs/ntfs/attrib.[hc]::ntfs_resident_attr_value_resize().
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- Fix a bug in ntfs_map_runlist_nolock() where we forgot to protect
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access to the allocated size in the ntfs inode with the size lock.
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- Fix ntfs_attr_vcn_to_lcn_nolock() and ntfs_attr_find_vcn_nolock() to
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return LCN_ENOENT when there is no runlist and the allocated size is
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zero.
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- Fix load_attribute_list() to handle the case of a NULL runlist.
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- Fix handling of sparse attributes in ntfs_attr_make_non_resident().
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- Add BUG() checks to ntfs_attr_make_non_resident() and ntfs_attr_set()
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to ensure that these functions are never called for compressed or
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encrypted attributes.
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- Fix cluster (de)allocators to work when the runlist is NULL and more
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importantly to take a locked runlist rather than them locking it
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which leads to lock reversal.
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- Truncate {a,c,m}time to the ntfs supported time granularity when
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updating the times in the inode in ntfs_setattr().
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2.1.23 - Implement extension of resident files and make writing safe as well as
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many bug fixes, cleanups, and enhancements...
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- Add printk rate limiting for ntfs_warning() and ntfs_error() when
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compiled without debug. This avoids a possible denial of service
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attack. Thanks to Carl-Daniel Hailfinger from SuSE for pointing this
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out.
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- Fix compilation warnings on ia64. (Randy Dunlap)
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- Use i_size_{read,write}() instead of reading i_size by hand and cache
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the value where apropriate.
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- Add size_lock to the ntfs_inode structure. This is an rw spinlock
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and it locks against access to the inode sizes. Note, ->size_lock
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is also accessed from irq context so you must use the _irqsave and
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_irqrestore lock and unlock functions, respectively. Protect all
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accesses to allocated_size, initialized_size, and compressed_size.
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- Minor optimization to fs/ntfs/super.c::ntfs_statfs() and its helpers.
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- Implement extension of resident files in the regular file write code
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paths (fs/ntfs/aops.c::ntfs_{prepare,commit}_write()). At present
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this only works until the data attribute becomes too big for the mft
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record after which we abort the write returning -EOPNOTSUPP from
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ntfs_prepare_write().
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- Add disable_sparse mount option together with a per volume sparse
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enable bit which is set appropriately and a per inode sparse disable
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bit which is preset on some system file inodes as appropriate.
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- Enforce that sparse support is disabled on NTFS volumes pre 3.0.
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- Fix a bug in fs/ntfs/runlist.c::ntfs_mapping_pairs_decompress() in
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the creation of the unmapped runlist element for the base attribute
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extent.
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- Split ntfs_map_runlist() into ntfs_map_runlist() and a non-locking
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helper ntfs_map_runlist_nolock() which is used by ntfs_map_runlist().
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This allows us to map runlist fragments with the runlist lock already
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held without having to drop and reacquire it around the call. Adapt
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all callers.
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- Change ntfs_find_vcn() to ntfs_find_vcn_nolock() which takes a locked
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runlist. This allows us to find runlist elements with the runlist
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lock already held without having to drop and reacquire it around the
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call. Adapt all callers.
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- Change time to u64 in time.h::ntfs2utc() as it otherwise generates a
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warning in the do_div() call on sparc32. Thanks to Meelis Roos for
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the report and analysis of the warning.
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- Fix a nasty runlist merge bug when merging two holes.
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- Set the ntfs_inode->allocated_size to the real allocated size in the
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mft record for resident attributes (fs/ntfs/inode.c).
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- Small readability cleanup to use "a" instead of "ctx->attr"
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everywhere (fs/ntfs/inode.c).
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- Make fs/ntfs/namei.c::ntfs_get_{parent,dentry} static and move the
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definition of ntfs_export_ops from fs/ntfs/super.c to namei.c. Also,
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declare ntfs_export_ops in fs/ntfs/ntfs.h.
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- Correct sparse file handling. The compressed values need to be
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checked and set in the ntfs inode as done for compressed files and
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the compressed size needs to be used for vfs inode->i_blocks instead
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of the allocated size, again, as done for compressed files.
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- Add AT_EA in addition to AT_DATA to whitelist for being allowed to be
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non-resident in fs/ntfs/attrib.c::ntfs_attr_can_be_non_resident().
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- Add fs/ntfs/attrib.c::ntfs_attr_vcn_to_lcn_nolock() used by the new
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write code.
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- Fix bug in fs/ntfs/attrib.c::ntfs_find_vcn_nolock() where after
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dropping the read lock and taking the write lock we were not checking
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whether someone else did not already do the work we wanted to do.
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- Rename fs/ntfs/attrib.c::ntfs_find_vcn_nolock() to
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ntfs_attr_find_vcn_nolock() and update all callers.
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- Add fs/ntfs/attrib.[hc]::ntfs_attr_make_non_resident().
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- Fix sign of various error return values to be negative in
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fs/ntfs/lcnalloc.c.
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- Modify ->readpage and ->writepage (fs/ntfs/aops.c) so they detect and
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handle the case where an attribute is converted from resident to
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non-resident by a concurrent file write.
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- Remove checks for NULL before calling kfree() since kfree() does the
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checking itself. (Jesper Juhl)
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- Some utilities modify the boot sector but do not update the checksum.
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Thus, relax the checking in fs/ntfs/super.c::is_boot_sector_ntfs() to
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only emit a warning when the checksum is incorrect rather than
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refusing the mount. Thanks to Bernd Casimir for pointing this
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problem out.
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- Update attribute definition handling.
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- Add NTFS_MAX_CLUSTER_SIZE and NTFS_MAX_PAGES_PER_CLUSTER constants.
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- Use NTFS_MAX_CLUSTER_SIZE in super.c instead of hard coding 0x10000.
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- Use MAX_BUF_PER_PAGE instead of variable sized array allocation for
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better code generation and one less sparse warning in fs/ntfs/aops.c.
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- Remove spurious void pointer casts from fs/ntfs/. (Pekka Enberg)
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- Use C99 style structure initialization after memory allocation where
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possible (fs/ntfs/{attrib.c,index.c,super.c}). Thanks to Al Viro and
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Pekka Enberg.
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- Stamp the transaction log ($UsnJrnl), aka user space journal, if it
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is active on the volume and we are mounting read-write or remounting
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from read-only to read-write.
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- Fix a bug in address space operations error recovery code paths where
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if the runlist was not mapped at all and a mapping error occured we
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would leave the runlist locked on exit to the function so that the
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next access to the same file would try to take the lock and deadlock.
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- Detect the case when Windows has been suspended to disk on the volume
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to be mounted and if this is the case do not allow (re)mounting
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read-write. This is done by parsing hiberfil.sys if present.
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- Fix several occurences of a bug where we would perform 'var & ~const'
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with a 64-bit variable and a int, i.e. 32-bit, constant. This causes
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the higher order 32-bits of the 64-bit variable to be zeroed. To fix
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this cast the 'const' to the same 64-bit type as 'var'.
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- Change the runlist terminator of the newly allocated cluster(s) to
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LCN_ENOENT in ntfs_attr_make_non_resident(). Otherwise the runlist
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code gets confused.
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- Add an extra parameter @last_vcn to ntfs_get_size_for_mapping_pairs()
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and ntfs_mapping_pairs_build() to allow the runlist encoding to be
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partial which is desirable when filling holes in sparse attributes.
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Update all callers.
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- Change ntfs_map_runlist_nolock() to only decompress the mapping pairs
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if the requested vcn is inside it. Otherwise we get into problems
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when we try to map an out of bounds vcn because we then try to map
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the already mapped runlist fragment which causes
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ntfs_mapping_pairs_decompress() to fail and return error. Update
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ntfs_attr_find_vcn_nolock() accordingly.
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- Fix a nasty deadlock that appeared in recent kernels.
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The situation: VFS inode X on a mounted ntfs volume is dirty. For
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same inode X, the ntfs_inode is dirty and thus corresponding on-disk
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inode, i.e. mft record, which is in a dirty PAGE_CACHE_PAGE belonging
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to the table of inodes, i.e. $MFT, inode 0.
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What happens:
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Process 1: sys_sync()/umount()/whatever... calls
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__sync_single_inode() for $MFT -> do_writepages() -> write_page for
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the dirty page containing the on-disk inode X, the page is now locked
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-> ntfs_write_mst_block() which clears PageUptodate() on the page to
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prevent anyone else getting hold of it whilst it does the write out.
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This is necessary as the on-disk inode needs "fixups" applied before
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the write to disk which are removed again after the write and
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PageUptodate is then set again. It then analyses the page looking
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for dirty on-disk inodes and when it finds one it calls
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ntfs_may_write_mft_record() to see if it is safe to write this
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on-disk inode. This then calls ilookup5() to check if the
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corresponding VFS inode is in icache(). This in turn calls ifind()
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which waits on the inode lock via wait_on_inode whilst holding the
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global inode_lock.
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Process 2: pdflush results in a call to __sync_single_inode for the
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same VFS inode X on the ntfs volume. This locks the inode (I_LOCK)
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then calls write-inode -> ntfs_write_inode -> map_mft_record() ->
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read_cache_page() for the page (in page cache of table of inodes
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$MFT, inode 0) containing the on-disk inode. This page has
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PageUptodate() clear because of Process 1 (see above) so
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read_cache_page() blocks when it tries to take the page lock for the
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page so it can call ntfs_read_page().
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Thus Process 1 is holding the page lock on the page containing the
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on-disk inode X and it is waiting on the inode X to be unlocked in
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ifind() so it can write the page out and then unlock the page.
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And Process 2 is holding the inode lock on inode X and is waiting for
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the page to be unlocked so it can call ntfs_readpage() or discover
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that Process 1 set PageUptodate() again and use the page.
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Thus we have a deadlock due to ifind() waiting on the inode lock.
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The solution: The fix is to use the newly introduced
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ilookup5_nowait() which does not wait on the inode's lock and hence
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avoids the deadlock. This is safe as we do not care about the VFS
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inode and only use the fact that it is in the VFS inode cache and the
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fact that the vfs and ntfs inodes are one struct in memory to find
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the ntfs inode in memory if present. Also, the ntfs inode has its
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own locking so it does not matter if the vfs inode is locked.
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- Fix bug in mft record writing where we forgot to set the device in
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the buffers when mapping them after the VM had discarded them.
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Thanks to Martin MOKREJŠ for the bug report.
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2.1.22 - Many bug and race fixes and error handling improvements.
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- Improve error handling in fs/ntfs/inode.c::ntfs_truncate().
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- Change fs/ntfs/inode.c::ntfs_truncate() to return an error code
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instead of void and provide a helper ntfs_truncate_vfs() for the
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vfs ->truncate method.
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- Add a new ntfs inode flag NInoTruncateFailed() and modify
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fs/ntfs/inode.c::ntfs_truncate() to set and clear it appropriately.
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- Fix min_size and max_size definitions in ATTR_DEF structure in
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fs/ntfs/layout.h to be signed.
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- Add attribute definition handling helpers to fs/ntfs/attrib.[hc]:
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ntfs_attr_size_bounds_check(), ntfs_attr_can_be_non_resident(), and
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ntfs_attr_can_be_resident(), which in turn use the new private helper
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ntfs_attr_find_in_attrdef().
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- In fs/ntfs/aops.c::mark_ntfs_record_dirty(), take the
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mapping->private_lock around the dirtying of the buffer heads
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analagous to the way it is done in __set_page_dirty_buffers().
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- Ensure the mft record size does not exceed the PAGE_CACHE_SIZE at
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mount time as this cannot work with the current implementation.
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- Check for location of attribute name and improve error handling in
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general in fs/ntfs/inode.c::ntfs_read_locked_inode() and friends.
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- In fs/ntfs/aops.c::ntfs_writepage(), if the page is fully outside
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i_size, i.e. race with truncate, invalidate the buffers on the page
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so that they become freeable and hence the page does not leak.
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- Remove unused function fs/ntfs/runlist.c::ntfs_rl_merge(). (Adrian
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Bunk)
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- Fix stupid bug in fs/ntfs/attrib.c::ntfs_attr_find() that resulted in
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a NULL pointer dereference in the error code path when a corrupt
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attribute was found. (Thanks to Domen Puncer for the bug report.)
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- Add MODULE_VERSION() to fs/ntfs/super.c.
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- Make several functions and variables static. (Adrian Bunk)
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- Modify fs/ntfs/aops.c::mark_ntfs_record_dirty() so it allocates
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buffers for the page if they are not present and then marks the
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buffers belonging to the ntfs record dirty. This causes the buffers
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to become busy and hence they are safe from removal until the page
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has been written out.
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- Fix stupid bug in fs/ntfs/attrib.c::ntfs_external_attr_find() in the
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error handling code path that resulted in a BUG() due to trying to
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unmap an extent mft record when the mapping of it had failed and it
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thus was not mapped. (Thanks to Ken MacFerrin for the bug report.)
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- Drop the runlist lock after the vcn has been read in
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fs/ntfs/lcnalloc.c::__ntfs_cluster_free().
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- Rewrite handling of multi sector transfer errors. We now do not set
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PageError() when such errors are detected in the async i/o handler
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fs/ntfs/aops.c::ntfs_end_buffer_async_read(). All users of mst
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protected attributes now check the magic of each ntfs record as they
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use it and act appropriately. This has the effect of making errors
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granular per ntfs record rather than per page which solves the case
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where we cannot access any of the ntfs records in a page when a
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single one of them had an mst error. (Thanks to Ken MacFerrin for
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the bug report.)
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- Fix error handling in fs/ntfs/quota.c::ntfs_mark_quotas_out_of_date()
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where we failed to release i_sem on the $Quota/$Q attribute inode.
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- Fix bug in handling of bad inodes in fs/ntfs/namei.c::ntfs_lookup().
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- Add mapping of unmapped buffers to all remaining code paths, i.e.
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fs/ntfs/aops.c::ntfs_write_mst_block(), mft.c::ntfs_sync_mft_mirror(),
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and write_mft_record_nolock(). From now on we require that the
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complete runlist for the mft mirror is always mapped into memory.
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- Add creation of buffers to fs/ntfs/mft.c::ntfs_sync_mft_mirror().
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- Improve error handling in fs/ntfs/aops.c::ntfs_{read,write}_block().
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- Cleanup fs/ntfs/aops.c::ntfs_{read,write}page() since we know that a
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resident attribute will be smaller than a page which makes the code
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simpler. Also make the code more tolerant to concurrent ->truncate.
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2.1.21 - Fix some races and bugs, rewrite mft write code, add mft allocator.
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- Implement extent mft record deallocation
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fs/ntfs/mft.c::ntfs_extent_mft_record_free().
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- Splitt runlist related functions off from attrib.[hc] to runlist.[hc].
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- Add vol->mft_data_pos and initialize it at mount time.
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- Rename init_runlist() to ntfs_init_runlist(), ntfs_vcn_to_lcn() to
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ntfs_rl_vcn_to_lcn(), decompress_mapping_pairs() to
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ntfs_mapping_pairs_decompress(), ntfs_merge_runlists() to
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ntfs_runlists_merge() and adapt all callers.
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- Add fs/ntfs/runlist.[hc]::ntfs_get_nr_significant_bytes(),
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ntfs_get_size_for_mapping_pairs(), ntfs_write_significant_bytes(),
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and ntfs_mapping_pairs_build(), adapted from libntfs.
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- Make fs/ntfs/lcnalloc.c::ntfs_cluster_free_from_rl_nolock() not
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static and add a declaration for it to lcnalloc.h.
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- Add fs/ntfs/lcnalloc.h::ntfs_cluster_free_from_rl() which is a static
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inline wrapper for ntfs_cluster_free_from_rl_nolock() which takes the
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cluster bitmap lock for the duration of the call.
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- Add fs/ntfs/attrib.[hc]::ntfs_attr_record_resize().
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- Implement the equivalent of memset() for an ntfs attribute in
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fs/ntfs/attrib.[hc]::ntfs_attr_set() and switch
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fs/ntfs/logfile.c::ntfs_empty_logfile() to using it.
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- Remove unnecessary casts from LCN_* constants.
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- Implement fs/ntfs/runlist.c::ntfs_rl_truncate_nolock().
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- Add MFT_RECORD_OLD as a copy of MFT_RECORD in fs/ntfs/layout.h and
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change MFT_RECORD to contain the NTFS 3.1+ specific fields.
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- Add a helper function fs/ntfs/aops.c::mark_ntfs_record_dirty() which
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marks all buffers belonging to an ntfs record dirty, followed by
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marking the page the ntfs record is in dirty and also marking the vfs
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inode containing the ntfs record dirty (I_DIRTY_PAGES).
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- Switch fs/ntfs/index.h::ntfs_index_entry_mark_dirty() to using the
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new helper fs/ntfs/aops.c::mark_ntfs_record_dirty() and remove the no
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longer needed fs/ntfs/index.[hc]::__ntfs_index_entry_mark_dirty().
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- Move ntfs_{un,}map_page() from ntfs.h to aops.h and fix resulting
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include errors.
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- Move the typedefs for runlist_element and runlist from types.h to
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runlist.h and fix resulting include errors.
|
|
- Remove unused {__,}format_mft_record() from fs/ntfs/mft.c.
|
|
- Modify fs/ntfs/mft.c::__mark_mft_record_dirty() to use the helper
|
|
mark_ntfs_record_dirty() which also changes the behaviour in that we
|
|
now set the buffers belonging to the mft record dirty as well as the
|
|
page itself.
|
|
- Update fs/ntfs/mft.c::write_mft_record_nolock() and sync_mft_mirror()
|
|
to cope with the fact that there now are dirty buffers in mft pages.
|
|
- Update fs/ntfs/inode.c::ntfs_write_inode() to also use the helper
|
|
mark_ntfs_record_dirty() and thus to set the buffers belonging to the
|
|
mft record dirty as well as the page itself.
|
|
- Fix compiler warnings on x86-64 in fs/ntfs/dir.c. (Randy Dunlap,
|
|
slightly modified by me)
|
|
- Add fs/ntfs/mft.c::try_map_mft_record() which fails with -EALREADY if
|
|
the mft record is already locked and otherwise behaves the same way
|
|
as fs/ntfs/mft.c::map_mft_record().
|
|
- Modify fs/ntfs/mft.c::write_mft_record_nolock() so that it only
|
|
writes the mft record if the buffers belonging to it are dirty.
|
|
Otherwise we assume that it was written out by other means already.
|
|
- Attempting to write outside initialized size is _not_ a bug so remove
|
|
the bug check from fs/ntfs/aops.c::ntfs_write_mst_block(). It is in
|
|
fact required to write outside initialized size when preparing to
|
|
extend the initialized size.
|
|
- Map the page instead of using page_address() before writing to it in
|
|
fs/ntfs/aops.c::ntfs_mft_writepage().
|
|
- Provide exclusion between opening an inode / mapping an mft record
|
|
and accessing the mft record in fs/ntfs/mft.c::ntfs_mft_writepage()
|
|
by setting the page not uptodate throughout ntfs_mft_writepage().
|
|
- Clear the page uptodate flag in fs/ntfs/aops.c::ntfs_write_mst_block()
|
|
to ensure noone can see the page whilst the mst fixups are applied.
|
|
- Add the helper fs/ntfs/mft.c::ntfs_may_write_mft_record() which
|
|
checks if an mft record may be written out safely obtaining any
|
|
necessary locks in the process. This is used by
|
|
fs/ntfs/aops.c::ntfs_write_mst_block().
|
|
- Modify fs/ntfs/aops.c::ntfs_write_mst_block() to also work for
|
|
writing mft records and improve its error handling in the process.
|
|
Now if any of the records in the page fail to be written out, all
|
|
other records will be written out instead of aborting completely.
|
|
- Remove ntfs_mft_aops and update all users to use ntfs_mst_aops.
|
|
- Modify fs/ntfs/inode.c::ntfs_read_locked_inode() to set the
|
|
ntfs_mst_aops for all inodes which are NInoMstProtected() and
|
|
ntfs_aops for all other inodes.
|
|
- Rename fs/ntfs/mft.c::sync_mft_mirror{,_umount}() to
|
|
ntfs_sync_mft_mirror{,_umount}() and change their parameters so they
|
|
no longer require an ntfs inode to be present. Update all callers.
|
|
- Cleanup the error handling in fs/ntfs/mft.c::ntfs_sync_mft_mirror().
|
|
- Clear the page uptodate flag in fs/ntfs/mft.c::ntfs_sync_mft_mirror()
|
|
to ensure noone can see the page whilst the mst fixups are applied.
|
|
- Remove the no longer needed fs/ntfs/mft.c::ntfs_mft_writepage() and
|
|
fs/ntfs/mft.c::try_map_mft_record().
|
|
- Fix callers of fs/ntfs/aops.c::mark_ntfs_record_dirty() to call it
|
|
with the ntfs inode which contains the page rather than the ntfs
|
|
inode the mft record of which is in the page.
|
|
- Fix race condition in fs/ntfs/inode.c::ntfs_put_inode() by moving the
|
|
index inode bitmap inode release code from there to
|
|
fs/ntfs/inode.c::ntfs_clear_big_inode(). (Thanks to Christoph
|
|
Hellwig for spotting this.)
|
|
- Fix race condition in fs/ntfs/inode.c::ntfs_put_inode() by taking the
|
|
inode semaphore around the code that sets ni->itype.index.bmp_ino to
|
|
NULL and reorganize the code to optimize it a bit. (Thanks to
|
|
Christoph Hellwig for spotting this.)
|
|
- Modify fs/ntfs/aops.c::mark_ntfs_record_dirty() to no longer take the
|
|
ntfs inode as a parameter as this is confusing and misleading and the
|
|
needed ntfs inode is available via NTFS_I(page->mapping->host).
|
|
Adapt all callers to this change.
|
|
- Modify fs/ntfs/mft.c::write_mft_record_nolock() and
|
|
fs/ntfs/aops.c::ntfs_write_mst_block() to only check the dirty state
|
|
of the first buffer in a record and to take this as the ntfs record
|
|
dirty state. We cannot look at the dirty state for subsequent
|
|
buffers because we might be racing with
|
|
fs/ntfs/aops.c::mark_ntfs_record_dirty().
|
|
- Move the static inline ntfs_init_big_inode() from fs/ntfs/inode.c to
|
|
inode.h and make fs/ntfs/inode.c::__ntfs_init_inode() non-static and
|
|
add a declaration for it to inode.h. Fix some compilation issues
|
|
that resulted due to #includes and header file interdependencies.
|
|
- Simplify setup of i_mode in fs/ntfs/inode.c::ntfs_read_locked_inode().
|
|
- Add helpers fs/ntfs/layout.h::MK_MREF() and MK_LE_MREF().
|
|
- Modify fs/ntfs/mft.c::map_extent_mft_record() to only verify the mft
|
|
record sequence number if it is specified (i.e. not zero).
|
|
- Add fs/ntfs/mft.[hc]::ntfs_mft_record_alloc() and various helper
|
|
functions used by it.
|
|
- Update Documentation/filesystems/ntfs.txt with instructions on how to
|
|
use the Device-Mapper driver with NTFS ftdisk/LDM raid. This removes
|
|
the linear raid problem with the Software RAID / MD driver when one
|
|
or more of the devices has an odd number of sectors.
|
|
|
|
2.1.20 - Fix two stupid bugs introduced in 2.1.18 release.
|
|
|
|
- Fix stupid bug in fs/ntfs/attrib.c::ntfs_attr_reinit_search_ctx()
|
|
where we did not clear ctx->al_entry but it was still set due to
|
|
changes in ntfs_attr_lookup() and ntfs_external_attr_find() in
|
|
particular.
|
|
- Fix another stupid bug in fs/ntfs/attrib.c::ntfs_external_attr_find()
|
|
where we forgot to unmap the extent mft record when we had finished
|
|
enumerating an attribute which caused a bug check to trigger when the
|
|
VFS calls ->clear_inode.
|
|
|
|
2.1.19 - Many cleanups, improvements, and a minor bug fix.
|
|
|
|
- Update ->setattr (fs/ntfs/inode.c::ntfs_setattr()) to refuse to
|
|
change the uid, gid, and mode of an inode as we do not support NTFS
|
|
ACLs yet.
|
|
- Remove BKL use from ntfs_setattr() syncing up with the rest of the
|
|
kernel.
|
|
- Get rid of the ugly transparent union in fs/ntfs/dir.c::ntfs_readdir()
|
|
and ntfs_filldir() as per suggestion from Al Viro.
|
|
- Change '\0' and L'\0' to simply 0 as per advice from Linus Torvalds.
|
|
- Update ->truncate (fs/ntfs/inode.c::ntfs_truncate()) to check if the
|
|
inode size has changed and to only output an error if so.
|
|
- Rename fs/ntfs/attrib.h::attribute_value_length() to ntfs_attr_size().
|
|
- Add le{16,32,64} as well as sle{16,32,64} data types to
|
|
fs/ntfs/types.h.
|
|
- Change ntfschar to be le16 instead of u16 in fs/ntfs/types.h.
|
|
- Add le versions of VCN, LCN, and LSN called leVCN, leLCN, and leLSN,
|
|
respectively, to fs/ntfs/types.h.
|
|
- Update endianness conversion macros in fs/ntfs/endian.h to use the
|
|
new types as appropriate.
|
|
- Do proper type casting when using sle64_to_cpup() in fs/ntfs/dir.c
|
|
and index.c.
|
|
- Add leMFT_REF data type to fs/ntfs/layout.h.
|
|
- Update all NTFS header files with the new little endian data types.
|
|
Affected files are fs/ntfs/layout.h, logfile.h, and time.h.
|
|
- Do proper type casting when using ntfs_is_*_recordp() in
|
|
fs/ntfs/logfile.c, mft.c, and super.c.
|
|
- Fix all the sparse bitwise warnings. Had to change all the typedef
|
|
enums storing little endian values to simple enums plus a typedef for
|
|
the datatype to make sparse happy.
|
|
- Fix a bug found by the new sparse bitwise warnings where the default
|
|
upcase table was defined as a pointer to wchar_t rather than ntfschar
|
|
in fs/ntfs/ntfs.h and super.c.
|
|
- Change {const_,}cpu_to_le{16,32}(0) to just 0 as suggested by Al Viro.
|
|
|
|
2.1.18 - Fix scheduling latencies at mount time as well as an endianness bug.
|
|
|
|
- Remove vol->nr_mft_records as it was pretty meaningless and optimize
|
|
the calculation of total/free inodes as used by statfs().
|
|
- Fix scheduling latencies in ntfs_fill_super() by dropping the BKL
|
|
because the code itself is using the ntfs_lock semaphore which
|
|
provides safe locking. (Ingo Molnar)
|
|
- Fix a potential bug in fs/ntfs/mft.c::map_extent_mft_record() that
|
|
could occur in the future for when we start closing/freeing extent
|
|
inodes if we don't set base_ni->ext.extent_ntfs_inos to NULL after
|
|
we free it.
|
|
- Rename {find,lookup}_attr() to ntfs_attr_{find,lookup}() as well as
|
|
find_external_attr() to ntfs_external_attr_find() to cleanup the
|
|
namespace a bit and to be more consistent with libntfs.
|
|
- Rename {{re,}init,get,put}_attr_search_ctx() to
|
|
ntfs_attr_{{re,}init,get,put}_search_ctx() as well as the type
|
|
attr_search_context to ntfs_attr_search_ctx.
|
|
- Force use of ntfs_attr_find() in ntfs_attr_lookup() when searching
|
|
for the attribute list attribute itself.
|
|
- Fix endianness bug in ntfs_external_attr_find().
|
|
- Change ntfs_{external_,}attr_find() to return 0 on success, -ENOENT
|
|
if the attribute is not found, and -EIO on real error. In the case
|
|
of -ENOENT, the search context is updated to describe the attribute
|
|
before which the attribute being searched for would need to be
|
|
inserted if such an action were to be desired and in the case of
|
|
ntfs_external_attr_find() the search context is also updated to
|
|
indicate the attribute list entry before which the attribute list
|
|
entry of the attribute being searched for would need to be inserted
|
|
if such an action were to be desired. Also make ntfs_find_attr()
|
|
static and remove its prototype from attrib.h as it is not used
|
|
anywhere other than attrib.c. Update ntfs_attr_lookup() and all
|
|
callers of ntfs_{external,}attr_{find,lookup}() for the new return
|
|
values.
|
|
- Minor cleanup of fs/ntfs/inode.c::ntfs_init_locked_inode().
|
|
|
|
2.1.17 - Fix bugs in mount time error code paths and other updates.
|
|
|
|
- Implement bitmap modification code (fs/ntfs/bitmap.[hc]). This
|
|
includes functions to set/clear a single bit or a run of bits.
|
|
- Add fs/ntfs/attrib.[hc]::ntfs_find_vcn() which returns the locked
|
|
runlist element containing a particular vcn. It also takes care of
|
|
mapping any needed runlist fragments.
|
|
- Implement cluster (de-)allocation code (fs/ntfs/lcnalloc.[hc]).
|
|
- Load attribute definition table from $AttrDef at mount time.
|
|
- Fix bugs in mount time error code paths involving (de)allocation of
|
|
the default and volume upcase tables.
|
|
- Remove ntfs_nr_mounts as it is no longer used.
|
|
|
|
2.1.16 - Implement access time updates, file sync, async io, and read/writev.
|
|
|
|
- Add support for readv/writev and aio_read/aio_write (fs/ntfs/file.c).
|
|
This is done by setting the appropriate file operations pointers to
|
|
the generic helper functions provided by mm/filemap.c.
|
|
- Implement fsync, fdatasync, and msync both for files (fs/ntfs/file.c)
|
|
and directories (fs/ntfs/dir.c).
|
|
- Add support for {a,m,c}time updates to inode.c::ntfs_write_inode().
|
|
Note, except for the root directory and any other system files opened
|
|
by the user, the system files will not have their access times
|
|
updated as they are only accessed at the inode level an hence the
|
|
file level functions which cause the times to be updated are never
|
|
invoked.
|
|
|
|
2.1.15 - Invalidate quotas when (re)mounting read-write.
|
|
|
|
- Add new element itype.index.collation_rule to the ntfs inode
|
|
structure and set it appropriately in ntfs_read_locked_inode().
|
|
- Implement a new inode type "index" to allow efficient access to the
|
|
indices found in various system files and adapt inode handling
|
|
accordingly (fs/ntfs/inode.[hc]). An index inode is essentially an
|
|
attribute inode (NInoAttr() is true) with an attribute type of
|
|
AT_INDEX_ALLOCATION. As such, it is no longer allowed to call
|
|
ntfs_attr_iget() with an attribute type of AT_INDEX_ALLOCATION as
|
|
there would be no way to distinguish between normal attribute inodes
|
|
and index inodes. The function to obtain an index inode is
|
|
ntfs_index_iget() and it uses the helper function
|
|
ntfs_read_locked_index_inode(). Note, we do not overload
|
|
ntfs_attr_iget() as indices consist of multiple attributes so using
|
|
ntfs_attr_iget() to obtain an index inode would be confusing.
|
|
- Ensure that there is no overflow when doing page->index <<
|
|
PAGE_CACHE_SHIFT by casting page->index to s64 in fs/ntfs/aops.c.
|
|
- Use atomic kmap instead of kmap() in fs/ntfs/aops.c::ntfs_read_page()
|
|
and ntfs_read_block().
|
|
- Use case sensitive attribute lookups instead of case insensitive ones.
|
|
- Lock all page cache pages belonging to mst protected attributes while
|
|
accessing them to ensure we never see corrupt data while the page is
|
|
under writeout.
|
|
- Add framework for generic ntfs collation (fs/ntfs/collation.[hc]).
|
|
We have ntfs_is_collation_rule_supported() to check if the collation
|
|
rule you want to use is supported and ntfs_collation() which actually
|
|
collates two data items. We currently only support COLLATION_BINARY
|
|
and COLLATION_NTOFS_ULONG but support for other collation rules will
|
|
be added as the need arises.
|
|
- Add a new type, ntfs_index_context, to allow retrieval of an index
|
|
entry using the corresponding index key. To get an index context,
|
|
use ntfs_index_ctx_get() and to release it, use ntfs_index_ctx_put().
|
|
This also adds a new slab cache for the index contexts. To lookup a
|
|
key in an index inode, use ntfs_index_lookup(). After modifying an
|
|
index entry, call ntfs_index_entry_flush_dcache_page() followed by
|
|
ntfs_index_entry_mark_dirty() to ensure the changes are written out
|
|
to disk. For details see fs/ntfs/index.[hc]. Note, at present, if
|
|
an index entry is in the index allocation attribute rather than the
|
|
index root attribute it will not be written out (you will get a
|
|
warning message about discarded changes instead).
|
|
- Load the quota file ($Quota) and check if quota tracking is enabled
|
|
and if so, mark the quotas out of date. This causes windows to
|
|
rescan the volume on boot and update all quota entries.
|
|
- Add a set_page_dirty address space operation for ntfs_m[fs]t_aops.
|
|
It is simply set to __set_page_dirty_nobuffers() to make sure that
|
|
running set_page_dirty() on a page containing mft/ntfs records will
|
|
not affect the dirty state of the page buffers.
|
|
- Add fs/ntfs/index.c::__ntfs_index_entry_mark_dirty() which sets all
|
|
buffers that are inside the ntfs record in the page dirty after which
|
|
it sets the page dirty. This allows ->writepage to only write the
|
|
dirty index records rather than having to write all the records in
|
|
the page. Modify fs/ntfs/index.h::ntfs_index_entry_mark_dirty() to
|
|
use this rather than __set_page_dirty_nobuffers().
|
|
- Implement fs/ntfs/aops.c::ntfs_write_mst_block() which enables the
|
|
writing of page cache pages belonging to mst protected attributes
|
|
like the index allocation attribute in directory indices and other
|
|
indices like $Quota/$Q, etc. This means that the quota is now marked
|
|
out of date on all volumes rather than only on ones where the quota
|
|
defaults entry is in the index root attribute of the $Quota/$Q index.
|
|
|
|
2.1.14 - Fix an NFSd caused deadlock reported by several users.
|
|
|
|
- Modify fs/ntfs/ntfs_readdir() to copy the index root attribute value
|
|
to a buffer so that we can put the search context and unmap the mft
|
|
record before calling the filldir() callback. We need to do this
|
|
because of NFSd which calls ->lookup() from its filldir callback()
|
|
and this causes NTFS to deadlock as ntfs_lookup() maps the mft record
|
|
of the directory and since ntfs_readdir() has got it mapped already
|
|
ntfs_lookup() deadlocks.
|
|
|
|
2.1.13 - Enable overwriting of resident files and housekeeping of system files.
|
|
|
|
- Implement writing of mft records (fs/ntfs/mft.[hc]), which includes
|
|
keeping the mft mirror in sync with the mft when mirrored mft records
|
|
are written. The functions are write_mft_record{,_nolock}(). The
|
|
implementation is quite rudimentary for now with lots of things not
|
|
implemented yet but I am not sure any of them can actually occur so
|
|
I will wait for people to hit each one and only then implement it.
|
|
- Commit open system inodes at umount time. This should make it
|
|
virtually impossible for sync_mft_mirror_umount() to ever be needed.
|
|
- Implement ->write_inode (fs/ntfs/inode.c::ntfs_write_inode()) for the
|
|
ntfs super operations. This gives us inode writing via the VFS inode
|
|
dirty code paths. Note: Access time updates are not implemented yet.
|
|
- Implement fs/ntfs/mft.[hc]::{,__}mark_mft_record_dirty() and make
|
|
fs/ntfs/aops.c::ntfs_writepage() and ntfs_commit_write() use it, thus
|
|
finally enabling resident file overwrite! (-8 This also includes a
|
|
placeholder for ->writepage (ntfs_mft_writepage()), which for now
|
|
just redirties the page and returns. Also, at umount time, we for
|
|
now throw away all mft data page cache pages after the last call to
|
|
ntfs_commit_inode() in the hope that all inodes will have been
|
|
written out by then and hence no dirty (meta)data will be lost. We
|
|
also check for this case and emit an error message telling the user
|
|
to run chkdsk.
|
|
- Use set_page_writeback() and end_page_writeback() in the resident
|
|
attribute code path of fs/ntfs/aops.c::ntfs_writepage() otherwise
|
|
the radix-tree tag PAGECACHE_TAG_DIRTY remains set even though the
|
|
page is clean.
|
|
- Implement ntfs_mft_writepage() so it now checks if any of the mft
|
|
records in the page are dirty and if so redirties the page and
|
|
returns. Otherwise it just returns (after doing set_page_writeback(),
|
|
unlock_page(), end_page_writeback() or the radix-tree tag
|
|
PAGECACHE_TAG_DIRTY remains set even though the page is clean), thus
|
|
alowing the VM to do with the page as it pleases. Also, at umount
|
|
time, now only throw away dirty mft (meta)data pages if dirty inodes
|
|
are present and ask the user to email us if they see this happening.
|
|
- Add functions ntfs_{clear,set}_volume_flags(), to modify the volume
|
|
information flags (fs/ntfs/super.c).
|
|
- Mark the volume dirty when (re)mounting read-write and mark it clean
|
|
when unmounting or remounting read-only. If any volume errors are
|
|
found, the volume is left marked dirty to force chkdsk to run.
|
|
- Add code to set the NT4 compatibility flag when (re)mounting
|
|
read-write for newer NTFS versions but leave it commented out for now
|
|
since we do not make any modifications that are NTFS 1.2 specific yet
|
|
and since setting this flag breaks Captive-NTFS which is not nice.
|
|
This code must be enabled once we start writing NTFS 1.2 specific
|
|
changes otherwise Windows NTFS driver might crash / cause corruption.
|
|
|
|
2.1.12 - Fix the second fix to the decompression engine and some cleanups.
|
|
|
|
- Add a new address space operations struct, ntfs_mst_aops, for mst
|
|
protected attributes. This is because the default ntfs_aops do not
|
|
make sense with mst protected data and were they to write anything to
|
|
such an attribute they would cause data corruption so we provide
|
|
ntfs_mst_aops which does not have any write related operations set.
|
|
- Cleanup dirty ntfs inode handling (fs/ntfs/inode.[hc]) which also
|
|
includes an adapted ntfs_commit_inode() and an implementation of
|
|
ntfs_write_inode() which for now just cleans dirty inodes without
|
|
writing them (it does emit a warning that this is happening).
|
|
- Undo the second decompression engine fix (see 2.1.9 release ChangeLog
|
|
entry) as it was only fixing a theoretical bug but at the same time
|
|
it badly broke the handling of sparse and uncompressed compression
|
|
blocks.
|
|
|
|
2.1.11 - Driver internal cleanups.
|
|
|
|
- Only build logfile.o if building the driver with read-write support.
|
|
- Really final white space cleanups.
|
|
- Use generic_ffs() instead of ffs() in logfile.c which allows the
|
|
log_page_size variable to be optimized by gcc into a constant.
|
|
- Rename uchar_t to ntfschar everywhere as uchar_t is unsigned 1-byte
|
|
char as defined by POSIX and as found on some systems.
|
|
|
|
2.1.10 - Force read-only (re)mounting of volumes with unsupported volume flags.
|
|
|
|
- Finish off the white space cleanups (remove trailing spaces, etc).
|
|
- Clean up ntfs_fill_super() and ntfs_read_inode_mount() by removing
|
|
the kludges around the first iget(). Instead of (re)setting ->s_op
|
|
we have the $MFT inode set up by explicit new_inode() / set ->i_ino /
|
|
insert_inode_hash() / call ntfs_read_inode_mount() directly. This
|
|
kills the need for second super_operations and allows to return error
|
|
from ntfs_read_inode_mount() without resorting to ugly "poisoning"
|
|
tricks. (Al Viro)
|
|
- Force read-only (re)mounting if any of the following bits are set in
|
|
the volume information flags:
|
|
VOLUME_IS_DIRTY, VOLUME_RESIZE_LOG_FILE,
|
|
VOLUME_UPGRADE_ON_MOUNT, VOLUME_DELETE_USN_UNDERWAY,
|
|
VOLUME_REPAIR_OBJECT_ID, VOLUME_MODIFIED_BY_CHKDSK
|
|
To make this easier we define VOLUME_MUST_MOUNT_RO_MASK with all the
|
|
above bits set so the test is made easy.
|
|
|
|
2.1.9 - Fix two bugs in decompression engine.
|
|
|
|
- Fix a bug where we would not always detect that we have reached the
|
|
end of a compression block because we were ending at minus one byte
|
|
which is effectively the same as being at the end. The fix is to
|
|
check whether the uncompressed buffer has been fully filled and if so
|
|
we assume we have reached the end of the compression block. A big
|
|
thank you to Marcin Gibuła for the bug report, the assistance in
|
|
tracking down the bug and testing the fix.
|
|
- Fix a possible bug where when a compressed read is truncated to the
|
|
end of the file, the offset inside the last page was not truncated.
|
|
|
|
2.1.8 - Handle $MFT mirror and $LogFile, improve time handling, and cleanups.
|
|
|
|
- Use get_bh() instead of manual atomic_inc() in fs/ntfs/compress.c.
|
|
- Modify fs/ntfs/time.c::ntfs2utc(), get_current_ntfs_time(), and
|
|
utc2ntfs() to work with struct timespec instead of time_t on the
|
|
Linux UTC time side thus preserving the full precision of the NTFS
|
|
time and only loosing up to 99 nano-seconds in the Linux UTC time.
|
|
- Move fs/ntfs/time.c to fs/ntfs/time.h and make the time functions
|
|
static inline.
|
|
- Remove unused ntfs_dirty_inode().
|
|
- Cleanup super operations declaration in fs/ntfs/super.c.
|
|
- Wrap flush_dcache_mft_record_page() in #ifdef NTFS_RW.
|
|
- Add NInoTestSetFoo() and NInoTestClearFoo() macro magic to
|
|
fs/ntfs/inode.h and use it to declare NInoTest{Set,Clear}Dirty.
|
|
- Move typedefs for ntfs_attr and test_t from fs/ntfs/inode.c to
|
|
fs/ntfs/inode.h so they can be used elsewhere.
|
|
- Determine the mft mirror size as the number of mirrored mft records
|
|
and store it in ntfs_volume->mftmirr_size (fs/ntfs/super.c).
|
|
- Load the mft mirror at mount time and compare the mft records stored
|
|
in it to the ones in the mft. Force a read-only mount if the two do
|
|
not match (fs/ntfs/super.c).
|
|
- Fix type casting related warnings on 64-bit architectures. Thanks
|
|
to Meelis Roos for reporting them.
|
|
- Move %L to %ll as %L is floating point and %ll is integer which is
|
|
what we want.
|
|
- Read the journal ($LogFile) and determine if the volume has been
|
|
shutdown cleanly and force a read-only mount if not (fs/ntfs/super.c
|
|
and fs/ntfs/logfile.c). This is a little bit of a crude check in
|
|
that we only look at the restart areas and not at the actual log
|
|
records so that there will be a very small number of cases where we
|
|
think that a volume is dirty when in fact it is clean. This should
|
|
only affect volumes that have not been shutdown cleanly and did not
|
|
have any pending, non-check-pointed i/o.
|
|
- If the $LogFile indicates a clean shutdown and a read-write (re)mount
|
|
is requested, empty $LogFile by overwriting it with 0xff bytes to
|
|
ensure that Windows cannot cause data corruption by replaying a stale
|
|
journal after Linux has written to the volume.
|
|
|
|
2.1.7 - Enable NFS exporting of mounted NTFS volumes.
|
|
|
|
- Set i_generation in the VFS inode from the seq_no of the NTFS inode.
|
|
- Make ntfs_lookup() NFS export safe, i.e. use d_splice_alias(), etc.
|
|
- Implement ->get_dentry() in fs/ntfs/namei.c::ntfs_get_dentry() as the
|
|
default doesn't allow inode number 0 which is a valid inode on NTFS
|
|
and even if it did allow that it uses iget() instead of ntfs_iget()
|
|
which makes it useless for us.
|
|
- Implement ->get_parent() in fs/ntfs/namei.c::ntfs_get_parent() as the
|
|
default just returns -EACCES which is not very useful.
|
|
- Define export operations (->s_export_op) for NTFS (ntfs_export_ops)
|
|
and set them up in the super block at mount time (super.c) this
|
|
allows mounted NTFS volumes to be exported via NFS.
|
|
- Add missing return -EOPNOTSUPP; in
|
|
fs/ntfs/aops.c::ntfs_commit_nonresident_write().
|
|
- Enforce no atime and no dir atime updates at mount/remount time as
|
|
they are not implemented yet anyway.
|
|
- Move a few assignments in fs/ntfs/attrib.c::load_attribute_list() to
|
|
after a NULL check. Thanks to Dave Jones for pointing this out.
|
|
|
|
2.1.6 - Fix minor bug in handling of compressed directories.
|
|
|
|
- Fix bug in handling of compressed directories. A compressed
|
|
directory is not really compressed so when we set the ->i_blocks
|
|
field of a compressed directory inode we were setting it from the
|
|
non-existing field ni->itype.compressed.size which gave random
|
|
results... For directories we now always use ni->allocated_size.
|
|
|
|
2.1.5 - Fix minor bug in attribute list attribute handling.
|
|
|
|
- Fix bug in attribute list handling. Actually it is not as much a bug
|
|
as too much protection in that we were not allowing attribute lists
|
|
which waste space on disk while Windows XP clearly allows it and in
|
|
fact creates such attribute lists so our driver was failing.
|
|
- Update NTFS documentation ready for 2.6 kernel release.
|
|
|
|
2.1.4 - Reduce compiler requirements.
|
|
|
|
- Remove all uses of unnamed structs and unions in the driver to make
|
|
old and newer gcc versions happy. Makes it a bit uglier IMO but at
|
|
least people will stop hassling me about it.
|
|
|
|
2.1.3 - Important bug fixes in corner cases.
|
|
|
|
- super.c::parse_ntfs_boot_sector(): Correct the check for 64-bit
|
|
clusters. (Philipp Thomas)
|
|
- attrib.c::load_attribute_list(): Fix bug when initialized_size is a
|
|
multiple of the block_size but not the cluster size. (Szabolcs
|
|
Szakacsits <szaka@sienet.hu>)
|
|
|
|
2.1.2 - Important bug fixes aleviating the hangs in statfs.
|
|
|
|
- Fix buggy free cluster and free inode determination logic.
|
|
|
|
2.1.1 - Minor updates.
|
|
|
|
- Add handling for initialized_size != data_size in compressed files.
|
|
- Reduce function local stack usage from 0x3d4 bytes to just noise in
|
|
fs/ntfs/upcase.c. (Randy Dunlap <rddunlap@osdl.ord>)
|
|
- Remove compiler warnings for newer gcc.
|
|
- Pages are no longer kmapped by mm/filemap.c::generic_file_write()
|
|
around calls to ->{prepare,commit}_write. Adapt NTFS appropriately
|
|
in fs/ntfs/aops.c::ntfs_prepare_nonresident_write() by using
|
|
kmap_atomic(KM_USER0).
|
|
|
|
2.1.0 - First steps towards write support: implement file overwrite.
|
|
|
|
- Add configuration option for developmental write support with an
|
|
appropriately scary configuration help text.
|
|
- Initial implementation of fs/ntfs/aops.c::ntfs_writepage() and its
|
|
helper fs/ntfs/aops.c::ntfs_write_block(). This enables mmap(2) based
|
|
overwriting of existing files on ntfs. Note: Resident files are
|
|
only written into memory, and not written out to disk at present, so
|
|
avoid writing to files smaller than about 1kiB.
|
|
- Initial implementation of fs/ntfs/aops.c::ntfs_prepare_write(), its
|
|
helper fs/ntfs/aops.c::ntfs_prepare_nonresident_write() and their
|
|
counterparts, fs/ntfs/aops.c::ntfs_commit_write(), and
|
|
fs/ntfs/aops.c::ntfs_commit_nonresident_write(), respectively. Also,
|
|
add generic_file_write() to the ntfs file operations (fs/ntfs/file.c).
|
|
This enables write(2) based overwriting of existing files on ntfs.
|
|
Note: As with mmap(2) based overwriting, resident files are only
|
|
written into memory, and not written out to disk at present, so avoid
|
|
writing to files smaller than about 1kiB.
|
|
- Implement ->truncate (fs/ntfs/inode.c::ntfs_truncate()) and
|
|
->setattr() (fs/ntfs/inode.c::ntfs_setattr()) inode operations for
|
|
files with the purpose of intercepting and aborting all i_size
|
|
changes which we do not support yet. ntfs_truncate() actually only
|
|
emits a warning message but AFAICS our interception of i_size changes
|
|
elsewhere means ntfs_truncate() never gets called for i_size changes.
|
|
It is only called from generic_file_write() when we fail in
|
|
ntfs_prepare_{,nonresident_}write() in order to discard any
|
|
instantiated buffers beyond i_size. Thus i_size is not actually
|
|
changed so our warning message is enough. Unfortunately it is not
|
|
possible to easily determine if i_size is being changed or not hence
|
|
we just emit an appropriately worded error message.
|
|
|
|
2.0.25 - Small bug fixes and cleanups.
|
|
|
|
- Unlock the page in an out of memory error code path in
|
|
fs/ntfs/aops.c::ntfs_read_block().
|
|
- If fs/ntfs/aops.c::ntfs_read_page() is called on an uptodate page,
|
|
just unlock the page and return. (This can happen due to ->writepage
|
|
clearing PageUptodate() during write out of MstProtected()
|
|
attributes.
|
|
- Remove leaked write code again.
|
|
|
|
2.0.24 - Cleanups.
|
|
|
|
- Treat BUG_ON() as ASSERT() not VERIFY(), i.e. do not use side effects
|
|
inside BUG_ON(). (Adam J. Richter)
|
|
- Split logical OR expressions inside BUG_ON() into individual BUG_ON()
|
|
calls for improved debugging. (Adam J. Richter)
|
|
- Add errors flag to the ntfs volume state, accessed via
|
|
NVol{,Set,Clear}Errors(vol).
|
|
- Do not allow read-write remounts of read-only volumes with errors.
|
|
- Clarify comment for ntfs file operation sendfile which was added by
|
|
Christoph Hellwig a while ago (just using generic_file_sendfile())
|
|
to say that ntfs ->sendfile is only used for the case where the
|
|
source data is on the ntfs partition and the destination is
|
|
somewhere else, i.e. nothing we need to concern ourselves with.
|
|
- Add generic_file_write() as our ntfs file write operation.
|
|
|
|
2.0.23 - Major bug fixes (races, deadlocks, non-i386 architectures).
|
|
|
|
- Massive internal locking changes to mft record locking. Fixes lock
|
|
recursion and replaces the mrec_lock read/write semaphore with a
|
|
mutex. Also removes the now superfluous mft_count. This fixes several
|
|
race conditions and deadlocks, especially in the future write code.
|
|
- Fix ntfs over loopback for compressed files by adding an
|
|
optimization barrier. (gcc was screwing up otherwise ?)
|
|
- Miscellaneous cleanups all over the code and a fix or two in error
|
|
handling code paths.
|
|
Thanks go to Christoph Hellwig for pointing out the following two:
|
|
- Remove now unused function fs/ntfs/malloc.h::vmalloc_nofs().
|
|
- Fix ntfs_free() for ia64 and parisc by checking for VMALLOC_END, too.
|
|
|
|
2.0.22 - Cleanups, mainly to ntfs_readdir(), and use C99 initializers.
|
|
|
|
- Change fs/ntfs/dir.c::ntfs_reddir() to only read/write ->f_pos once
|
|
at entry/exit respectively.
|
|
- Use C99 initializers for structures.
|
|
- Remove unused variable blocks from fs/ntfs/aops.c::ntfs_read_block().
|
|
|
|
2.0.21 - Check for, and refuse to work with too large files/directories/volumes.
|
|
|
|
- Limit volume size at mount time to 2TiB on architectures where
|
|
unsigned long is 32-bits (fs/ntfs/super.c::parse_ntfs_boot_sector()).
|
|
This is the most we can do without overflowing the 32-bit limit of
|
|
the block device size imposed on us by sb_bread() and sb_getblk()
|
|
for the time being.
|
|
- Limit file/directory size at open() time to 16TiB on architectures
|
|
where unsigned long is 32-bits (fs/ntfs/file.c::ntfs_file_open() and
|
|
fs/ntfs/dir.c::ntfs_dir_open()). This is the most we can do without
|
|
overflowing the page cache page index.
|
|
|
|
2.0.20 - Support non-resident directory index bitmaps, fix page leak in readdir.
|
|
|
|
- Move the directory index bitmap to use an attribute inode instead of
|
|
having special fields for it inside the ntfs inode structure. This
|
|
means that the index bitmaps now use the page cache for i/o, too,
|
|
and also as a side effect we get support for non-resident index
|
|
bitmaps for free.
|
|
- Simplify/cleanup error handling in fs/ntfs/dir.c::ntfs_readdir() and
|
|
fix a page leak that manifested itself in some cases.
|
|
- Add fs/ntfs/inode.c::ntfs_put_inode(), which we need to release the
|
|
index bitmap inode on the final iput().
|
|
|
|
2.0.19 - Fix race condition, improvements, and optimizations in i/o interface.
|
|
|
|
- Apply block optimization added to fs/ntfs/aops.c::ntfs_read_block()
|
|
to fs/ntfs/compress.c::ntfs_file_read_compressed_block() as well.
|
|
- Drop the "file" from ntfs_file_read_compressed_block().
|
|
- Rename fs/ntfs/aops.c::ntfs_enb_buffer_read_async() to
|
|
ntfs_end_buffer_async_read() (more like the fs/buffer.c counterpart).
|
|
- Update ntfs_end_buffer_async_read() with the improved logic from
|
|
its updated counterpart fs/buffer.c::end_buffer_async_read(). Apply
|
|
further logic improvements to better determine when we set PageError.
|
|
- Update submission of buffers in fs/ntfs/aops.c::ntfs_read_block() to
|
|
check for the buffers being uptodate first in line with the updated
|
|
fs/buffer.c::block_read_full_page(). This plugs a small race
|
|
condition.
|
|
|
|
2.0.18 - Fix race condition in reading of compressed files.
|
|
|
|
- There was a narrow window between checking a buffer head for being
|
|
uptodate and locking it in ntfs_file_read_compressed_block(). We now
|
|
lock the buffer and then check whether it is uptodate or not.
|
|
|
|
2.0.17 - Cleanups and optimizations - shrinking the ToDo list.
|
|
|
|
- Modify fs/ntfs/inode.c::ntfs_read_locked_inode() to return an error
|
|
code and update callers, i.e. ntfs_iget(), to pass that error code
|
|
up instead of just using -EIO.
|
|
- Modifications to super.c to ensure that both mount and remount
|
|
cannot set any write related options when the driver is compiled
|
|
read-only.
|
|
- Optimize block resolution in fs/ntfs/aops.c::ntfs_read_block() to
|
|
cache the current runlist element. This should improve performance
|
|
when reading very large and/or very fragmented data.
|
|
|
|
2.0.16 - Convert access to $MFT/$BITMAP to attribute inode API.
|
|
|
|
- Fix a stupid bug introduced in 2.0.15 where we were unmapping the
|
|
wrong inode in fs/ntfs/inode.c::ntfs_attr_iget().
|
|
- Fix debugging check in fs/ntfs/aops.c::ntfs_read_block().
|
|
- Convert $MFT/$BITMAP access to attribute inode API and remove all
|
|
remnants of the ugly mftbmp address space and operations hack. This
|
|
means we finally have only one readpage function as well as only one
|
|
async io completion handler. Yey! The mft bitmap is now just an
|
|
attribute inode and is accessed from vol->mftbmp_ino just as if it
|
|
were a normal file. Fake inodes rule. (-:
|
|
|
|
2.0.15 - Fake inodes based attribute i/o via the pagecache, fixes and cleanups.
|
|
|
|
- Fix silly bug in fs/ntfs/super.c::parse_options() which was causing
|
|
remounts to fail when the partition had an entry in /etc/fstab and
|
|
the entry specified the nls= option.
|
|
- Apply same macro magic used in fs/ntfs/inode.h to fs/ntfs/volume.h to
|
|
expand all the helper functions NVolFoo(), NVolSetFoo(), and
|
|
NVolClearFoo().
|
|
- Move copyright statement from driver initialisation message to
|
|
module description (fs/super.c). This makes the initialisation
|
|
message fit on one line and fits in better with rest of kernel.
|
|
- Update fs/ntfs/attrib.c::map_run_list() to work on both real and
|
|
attribute inodes, and both for files and directories.
|
|
- Implement fake attribute inodes allowing all attribute i/o to go via
|
|
the page cache and to use all the normal vfs/mm functionality:
|
|
- Add ntfs_attr_iget() and its helper ntfs_read_locked_attr_inode()
|
|
to fs/ntfs/inode.c.
|
|
- Add needed cleanup code to ntfs_clear_big_inode().
|
|
- Merge address space operations for files and directories (aops.c),
|
|
now just have ntfs_aops:
|
|
- Rename:
|
|
end_buffer_read_attr_async() -> ntfs_end_buffer_read_async(),
|
|
ntfs_attr_read_block() -> ntfs_read_block(),
|
|
ntfs_file_read_page() -> ntfs_readpage().
|
|
- Rewrite fs/ntfs/aops.c::ntfs_readpage() to work on both real and
|
|
attribute inodes, and both for files and directories.
|
|
- Remove obsolete fs/ntfs/aops.c::ntfs_mst_readpage().
|
|
|
|
2.0.14 - Run list merging code cleanup, minor locking changes, typo fixes.
|
|
|
|
- Change fs/ntfs/super.c::ntfs_statfs() to not rely on BKL by moving
|
|
the locking out of super.c::get_nr_free_mft_records() and taking and
|
|
dropping the mftbmp_lock rw_semaphore in ntfs_statfs() itself.
|
|
- Bring attribute runlist merging code (fs/ntfs/attrib.c) in sync with
|
|
current userspace ntfs library code. This means that if a merge
|
|
fails the original runlists are always left unmodified instead of
|
|
being silently corrupted.
|
|
- Misc typo fixes.
|
|
|
|
2.0.13 - Use iget5_locked() in preparation for fake inodes and small cleanups.
|
|
|
|
- Remove nr_mft_bits and the now superfluous union with nr_mft_records
|
|
from ntfs_volume structure.
|
|
- Remove nr_lcn_bits and the now superfluous union with nr_clusters
|
|
from ntfs_volume structure.
|
|
- Use iget5_locked() and friends instead of conventional iget(). Wrap
|
|
the call in fs/ntfs/inode.c::ntfs_iget() and update callers of iget()
|
|
to use ntfs_iget(). Leave only one iget() call at mount time so we
|
|
don't need an ntfs_iget_mount().
|
|
- Change fs/ntfs/inode.c::ntfs_new_extent_inode() to take mft_no as an
|
|
additional argument.
|
|
|
|
2.0.12 - Initial cleanup of address space operations following 2.0.11 changes.
|
|
|
|
- Merge fs/ntfs/aops.c::end_buffer_read_mst_async() and
|
|
fs/ntfs/aops.c::end_buffer_read_file_async() into one function
|
|
fs/ntfs/aops.c::end_buffer_read_attr_async() using NInoMstProtected()
|
|
to determine whether to apply mst fixups or not.
|
|
- Above change allows merging fs/ntfs/aops.c::ntfs_file_read_block()
|
|
and fs/ntfs/aops.c::ntfs_mst_readpage() into one function
|
|
fs/ntfs/aops.c::ntfs_attr_read_block(). Also, create a tiny wrapper
|
|
fs/ntfs/aops.c::ntfs_mst_readpage() to transform the parameters from
|
|
the VFS readpage function prototype to the ntfs_attr_read_block()
|
|
function prototype.
|
|
|
|
2.0.11 - Initial preparations for fake inode based attribute i/o.
|
|
|
|
- Move definition of ntfs_inode_state_bits to fs/ntfs/inode.h and
|
|
do some macro magic (adapted from include/linux/buffer_head.h) to
|
|
expand all the helper functions NInoFoo(), NInoSetFoo(), and
|
|
NInoClearFoo().
|
|
- Add new flag to ntfs_inode_state_bits: NI_Sparse.
|
|
- Add new fields to ntfs_inode structure to allow use of fake inodes
|
|
for attribute i/o: type, name, name_len. Also add new state bits:
|
|
NI_Attr, which, if set, indicates the inode is a fake inode, and
|
|
NI_MstProtected, which, if set, indicates the attribute uses multi
|
|
sector transfer protection, i.e. fixups need to be applied after
|
|
reads and before/after writes.
|
|
- Rename fs/ntfs/inode.c::ntfs_{new,clear,destroy}_inode() to
|
|
ntfs_{new,clear,destroy}_extent_inode() and update callers.
|
|
- Use ntfs_clear_extent_inode() in fs/ntfs/inode.c::__ntfs_clear_inode()
|
|
instead of ntfs_destroy_extent_inode().
|
|
- Cleanup memory deallocations in {__,}ntfs_clear_{,big_}inode().
|
|
- Make all operations on ntfs inode state bits use the NIno* functions.
|
|
- Set up the new ntfs inode fields and state bits in
|
|
fs/ntfs/inode.c::ntfs_read_inode() and add appropriate cleanup of
|
|
allocated memory to __ntfs_clear_inode().
|
|
- Cleanup ntfs_inode structure a bit for better ordering of elements
|
|
w.r.t. their size to allow better packing of the structure in memory.
|
|
|
|
2.0.10 - There can only be 2^32 - 1 inodes on an NTFS volume.
|
|
|
|
- Add check at mount time to verify that the number of inodes on the
|
|
volume does not exceed 2^32 - 1, which is the maximum allowed for
|
|
NTFS according to Microsoft.
|
|
- Change mft_no member of ntfs_inode structure to be unsigned long.
|
|
Update all users. This makes ntfs_inode->mft_no just a copy of struct
|
|
inode->i_ino. But we can't just always use struct inode->i_ino and
|
|
remove mft_no because extent inodes do not have an attached struct
|
|
inode.
|
|
|
|
2.0.9 - Decompression engine now uses a single buffer and other cleanups.
|
|
|
|
- Change decompression engine to use a single buffer protected by a
|
|
spin lock instead of per-CPU buffers. (Rusty Russell)
|
|
- Do not update cb_pos when handling a partial final page during
|
|
decompression of a sparse compression block, as the value is later
|
|
reset without being read/used. (Rusty Russell)
|
|
- Switch to using the new KM_BIO_SRC_IRQ for atomic kmap()s. (Andrew
|
|
Morton)
|
|
- Change buffer size in ntfs_readdir()/ntfs_filldir() to use
|
|
NLS_MAX_CHARSET_SIZE which makes the buffers almost 1kiB each but
|
|
it also makes everything safer so it is a good thing.
|
|
- Miscellaneous minor cleanups to comments.
|
|
|
|
2.0.8 - Major updates for handling of case sensitivity and dcache aliasing.
|
|
|
|
Big thanks go to Al Viro and other inhabitants of #kernel for investing
|
|
their time to discuss the case sensitivity and dcache aliasing issues.
|
|
|
|
- Remove unused source file fs/ntfs/attraops.c.
|
|
- Remove show_inodes mount option(s), thus dropping support for
|
|
displaying of short file names.
|
|
- Remove deprecated mount option posix.
|
|
- Restore show_sys_files mount option.
|
|
- Add new mount option case_sensitive, to determine if the driver
|
|
treats file names as case sensitive or not. If case sensitive, create
|
|
file names in the POSIX namespace. Otherwise create file names in the
|
|
LONG/WIN32 namespace. Note, files remain accessible via their short
|
|
file name, if it exists.
|
|
- Remove really dumb logic bug in boot sector recovery code.
|
|
- Fix dcache aliasing issues wrt short/long file names via changes
|
|
to fs/ntfs/dir.c::ntfs_lookup_inode_by_name() and
|
|
fs/ntfs/namei.c::ntfs_lookup():
|
|
- Add additional argument to ntfs_lookup_inode_by_name() in which we
|
|
return information about the matching file name if the case is not
|
|
matching or the match is a short file name. See comments above the
|
|
function definition for details.
|
|
- Change ntfs_lookup() to only create dcache entries for the correctly
|
|
cased file name and only for the WIN32 namespace counterpart of DOS
|
|
namespace file names. This ensures we have only one dentry per
|
|
directory and also removes all dcache aliasing issues between short
|
|
and long file names once we add write support. See comments above
|
|
function for details.
|
|
- Fix potential 1 byte overflow in fs/ntfs/unistr.c::ntfs_ucstonls().
|
|
|
|
2.0.7 - Minor cleanups and updates for changes in core kernel code.
|
|
|
|
- Remove much of the NULL struct element initializers.
|
|
- Various updates to make compatible with recent kernels.
|
|
- Remove defines of MAX_BUF_PER_PAGE and include linux/buffer_head.h
|
|
in fs/ntfs/ntfs.h instead.
|
|
- Remove no longer needed KERNEL_VERSION checks. We are now in the
|
|
kernel proper so they are no longer needed.
|
|
|
|
2.0.6 - Major bugfix to make compatible with other kernel changes.
|
|
|
|
- Initialize the mftbmp address space properly now that there are more
|
|
fields in the struct address_space. This was leading to hangs and
|
|
oopses on umount since 2.5.12 because of changes to other parts of
|
|
the kernel. We probably want a kernel generic init_address_space()
|
|
function...
|
|
- Drop BKL from ntfs_readdir() after consultation with Al Viro. The
|
|
only caller of ->readdir() is vfs_readdir() which holds i_sem during
|
|
the call, and i_sem is sufficient protection against changes in the
|
|
directory inode (including ->i_size).
|
|
- Use generic_file_llseek() for directories (as opposed to
|
|
default_llseek()) as this downs i_sem instead of the BKL which is
|
|
what we now need for exclusion against ->f_pos changes considering we
|
|
no longer take the BKL in ntfs_readdir().
|
|
|
|
2.0.5 - Major bugfix. Buffer overflow in extent inode handling.
|
|
|
|
- No need to set old blocksize in super.c::ntfs_fill_super() as the
|
|
VFS does so via invocation of deactivate_super() calling
|
|
fs->fill_super() calling block_kill_super() which does it.
|
|
- BKL moved from VFS into dir.c::ntfs_readdir(). (Linus Torvalds)
|
|
-> Do we really need it? I don't think so as we have exclusion on
|
|
the directory ntfs_inode rw_semaphore mrec_lock. We mmight have to
|
|
move the ->f_pos accesses under the mrec_lock though. Check this...
|
|
- Fix really, really, really stupid buffer overflow in extent inode
|
|
handling in mft.c::map_extent_mft_record().
|
|
|
|
2.0.4 - Cleanups and updates for kernel 2.5.11.
|
|
|
|
- Add documentation on how to use the MD driver to be able to use NTFS
|
|
stripe and volume sets in Linux and generally cleanup documentation
|
|
a bit.
|
|
Remove all uses of kdev_t in favour of struct block_device *:
|
|
- Change compress.c::ntfs_file_read_compressed_block() to use
|
|
sb_getblk() instead of getblk().
|
|
- Change super.c::ntfs_fill_super() to use bdev_hardsect_size() instead
|
|
of get_hardsect_size().
|
|
- No need to get old blocksize in super.c::ntfs_fill_super() as
|
|
fs/super.c::get_sb_bdev() already does this.
|
|
- Set bh->b_bdev instead of bh->b_dev throughout aops.c.
|
|
|
|
2.0.3 - Small bug fixes, cleanups, and performance improvements.
|
|
|
|
- Remove some dead code from mft.c.
|
|
- Optimize readpage and read_block functions throughout aops.c so that
|
|
only initialized blocks are read. Non-initialized ones have their
|
|
buffer head mapped, zeroed, and set up to date, without scheduling
|
|
any i/o. Thanks to Al Viro for advice on how to avoid the device i/o.
|
|
Thanks go to Andrew Morton for spotting the below:
|
|
- Fix buglet in allocate_compression_buffers() error code path.
|
|
- Call flush_dcache_page() after modifying page cache page contents in
|
|
ntfs_file_readpage().
|
|
- Check for existence of page buffers throughout aops.c before calling
|
|
create_empty_buffers(). This happens when an I/O error occurs and the
|
|
read is retried. (It also happens once writing is implemented so that
|
|
needed doing anyway but I had left it for later...)
|
|
- Don't BUG_ON() uptodate and/or mapped buffers throughout aops.c in
|
|
readpage and read_block functions. Reasoning same as above (i.e. I/O
|
|
error retries and future write code paths.)
|
|
|
|
2.0.2 - Minor updates and cleanups.
|
|
|
|
- Cleanup: rename mst.c::__post_read_mst_fixup to post_write_mst_fixup
|
|
and cleanup the code a bit, removing the unused size parameter.
|
|
- Change default fmask to 0177 and update documentation.
|
|
- Change attrib.c::get_attr_search_ctx() to return the search context
|
|
directly instead of taking the address of a pointer. A return value
|
|
of NULL means the allocation failed. Updated all callers
|
|
appropriately.
|
|
- Update to 2.5.9 kernel (preserving backwards compatibility) by
|
|
replacing all occurences of page->buffers with page_buffers(page).
|
|
- Fix minor bugs in runlist merging, also minor cleanup.
|
|
- Updates to bootsector layout and mft mirror contents descriptions.
|
|
- Small bug fix in error detection in unistr.c and some cleanups.
|
|
- Grow name buffer allocations in unistr.c in aligned mutlipled of 64
|
|
bytes.
|
|
|
|
2.0.1 - Minor updates.
|
|
|
|
- Make default umask correspond to documentation.
|
|
- Improve documentation.
|
|
- Set default mode to include execute bit. The {u,f,d}mask can be used
|
|
to take it away if desired. This allows binaries to be executed from
|
|
a mounted ntfs partition.
|
|
|
|
2.0.0 - New version number. Remove TNG from the name. Now in the kernel.
|
|
|
|
- Add kill_super, just keeping up with the vfs changes in the kernel.
|
|
- Repeat some changes from tng-0.0.8 that somehow got lost on the way
|
|
from the CVS import into BitKeeper.
|
|
- Begin to implement proper handling of allocated_size vs
|
|
initialized_size vs data_size (i.e. i_size). Done are
|
|
mft.c::ntfs_mft_readpage(), aops.c::end_buffer_read_index_async(),
|
|
and attrib.c::load_attribute_list().
|
|
- Lock the runlist in attrib.c::load_attribute_list() while using it.
|
|
- Fix memory leak in ntfs_file_read_compressed_block() and generally
|
|
clean up compress.c a little, removing some uncommented/unused debug
|
|
code.
|
|
- Tidy up dir.c a little bit.
|
|
- Don't bother getting the runlist in inode.c::ntfs_read_inode().
|
|
- Merge mft.c::ntfs_mft_readpage() and aops.c::ntfs_index_readpage()
|
|
creating aops.c::ntfs_mst_readpage(), improving the handling of
|
|
holes and overflow in the process and implementing the correct
|
|
equivalent of ntfs_file_get_block() in ntfs_mst_readpage() itself.
|
|
I am aiming for correctness at the moment. Modularisation can come
|
|
later.
|
|
- Rename aops.c::end_buffer_read_index_async() to
|
|
end_buffer_read_mst_async() and optimize the overflow checking and
|
|
handling.
|
|
- Use the host of the mftbmp address space mapping to hold the ntfs
|
|
volume. This is needed so the async i/o completion handler can
|
|
retrieve a pointer to the volume. Hopefully this will not cause
|
|
problems elsewhere in the kernel... Otherwise will need to use a
|
|
fake inode.
|
|
- Complete implementation of proper handling of allocated_size vs
|
|
initialized_size vs data_size (i.e. i_size) in whole driver.
|
|
Basically aops.c is now completely rewritten.
|
|
- Change NTFS driver name to just NTFS and set version number to 2.0.0
|
|
to make a clear distinction from the old driver which is still on
|
|
version 1.1.22.
|
|
|
|
tng-0.0.8 - 08/03/2002 - Now using BitKeeper, http://linux-ntfs.bkbits.net/
|
|
|
|
- Replace bdevname(sb->s_dev) with sb->s_id.
|
|
- Remove now superfluous new-line characters in all callers of
|
|
ntfs_debug().
|
|
- Apply kludge in ntfs_read_inode(), setting i_nlink to 1 for
|
|
directories. Without this the "find" utility gets very upset which is
|
|
fair enough as Linux/Unix do not support directory hard links.
|
|
- Further runlist merging work. (Richard Russon)
|
|
- Backwards compatibility for gcc-2.95. (Richard Russon)
|
|
- Update to kernel 2.5.5-pre1 and rediff the now tiny patch.
|
|
- Convert to new filesystem declaration using ->ntfs_get_sb() and
|
|
replacing ntfs_read_super() with ntfs_fill_super().
|
|
- Set s_maxbytes to MAX_LFS_FILESIZE to avoid page cache page index
|
|
overflow on 32-bit architectures.
|
|
- Cleanup upcase loading code to use ntfs_(un)map_page().
|
|
- Disable/reenable preemtion in critical sections of compession engine.
|
|
- Replace device size determination in ntfs_fill_super() with
|
|
sb->s_bdev->bd_inode->i_size (in bytes) and remove now superfluous
|
|
function super.c::get_nr_blocks().
|
|
- Implement a mount time option (show_inodes) allowing choice of which
|
|
types of inode names readdir() returns and modify ntfs_filldir()
|
|
accordingly. There are several parameters to show_inodes:
|
|
system: system files
|
|
win32: long file names (including POSIX file names) [DEFAULT]
|
|
long: same as win32
|
|
dos: short file names only (excluding POSIX file names)
|
|
short: same as dos
|
|
posix: same as both win32 and dos
|
|
all: all file names
|
|
Note that the options are additive, i.e. specifying:
|
|
-o show_inodes=system,show_inodes=win32,show_inodes=dos
|
|
is the same as specifying:
|
|
-o show_inodes=all
|
|
Note that the "posix" and "all" options will show all directory
|
|
names, BUT the link count on each directory inode entry is set to 1,
|
|
due to Linux not supporting directory hard links. This may well
|
|
confuse some userspace applications, since the directory names will
|
|
have the same inode numbers. Thus it is NOT advisable to use the
|
|
"posix" or "all" options. We provide them only for completeness sake.
|
|
- Add copies of allocated_size, initialized_size, and compressed_size to
|
|
the ntfs inode structure and set them up in
|
|
inode.c::ntfs_read_inode(). These reflect the unnamed data attribute
|
|
for files and the index allocation attribute for directories.
|
|
- Add copies of allocated_size and initialized_size to ntfs inode for
|
|
$BITMAP attribute of large directories and set them up in
|
|
inode.c::ntfs_read_inode().
|
|
- Add copies of allocated_size and initialized_size to ntfs volume for
|
|
$BITMAP attribute of $MFT and set them up in
|
|
super.c::load_system_files().
|
|
- Parse deprecated ntfs driver options (iocharset, show_sys_files,
|
|
posix, and utf8) and tell user what the new options to use are. Note
|
|
we still do support them but they will be removed with kernel 2.7.x.
|
|
- Change all occurences of integer long long printf formatting to hex
|
|
as printk() will not support long long integer format if/when the
|
|
div64 patch goes into the kernel.
|
|
- Make slab caches have stable names and change the names to what they
|
|
were intended to be. These changes are required/made possible by the
|
|
new slab cache name handling which removes the length limitation by
|
|
requiring the caller of kmem_cache_create() to supply a stable name
|
|
which is then referenced but not copied.
|
|
- Rename run_list structure to run_list_element and create a new
|
|
run_list structure containing a pointer to a run_list_element
|
|
structure and a read/write semaphore. Adapt all users of runlists
|
|
to new scheme and take and release the lock as needed. This fixes a
|
|
nasty race as the run_list changes even when inodes are locked for
|
|
reading and even when the inode isn't locked at all, so we really
|
|
needed the serialization. We use a semaphore rather than a spinlock
|
|
as memory allocations can sleep and doing everything GFP_ATOMIC
|
|
would be silly.
|
|
- Cleanup read_inode() removing all code checking for lowest_vcn != 0.
|
|
This can never happen due to the nature of lookup_attr() and how we
|
|
support attribute lists. If it did happen it would imply the inode
|
|
being corrupt.
|
|
- Check for lowest_vcn != 0 in ntfs_read_inode() and mark the inode as
|
|
bad if found.
|
|
- Update to 2.5.6-pre2 changes in struct address_space.
|
|
- Use parent_ino() when accessing d_parent inode number in dir.c.
|
|
- Import Sourceforge CVS repository into BitKeeper repository:
|
|
http://linux-ntfs.bkbits.net/ntfs-tng-2.5
|
|
- Update fs/Makefile, fs/Config.help, fs/Config.in, and
|
|
Documentation/filesystems/ntfs.txt for NTFS TNG.
|
|
- Create kernel configuration option controlling whether debugging
|
|
is enabled or not.
|
|
- Add the required export of end_buffer_io_sync() from the patches
|
|
directory to the kernel code.
|
|
- Update inode.c::ntfs_show_options() with show_inodes mount option.
|
|
- Update errors mount option.
|
|
|
|
tng-0.0.7 - 13/02/2002 - The driver is now feature complete for read-only!
|
|
|
|
- Cleanup mft.c and it's debug/error output in particular. Fix a minor
|
|
bug in mapping of extent inodes. Update all the comments to fit all
|
|
the recent code changes.
|
|
- Modify vcn_to_lcn() to cope with entirely unmapped runlists.
|
|
- Cleanups in compress.c, mostly comments and folding help.
|
|
- Implement attrib.c::map_run_list() as a generic helper.
|
|
- Make compress.c::ntfs_file_read_compressed_block() use map_run_list()
|
|
thus making code shorter and enabling attribute list support.
|
|
- Cleanup incorrect use of [su]64 with %L printf format specifier in
|
|
all source files. Type casts to [unsigned] long long added to correct
|
|
the mismatches (important for architectures which have long long not
|
|
being 64 bits).
|
|
- Merge async io completion handlers for directory indexes and $MFT
|
|
data into one by setting the index_block_size{_bits} of the ntfs
|
|
inode for $MFT to the mft_record_size{_bits} of the ntfs_volume.
|
|
- Cleanup aops.c, update comments.
|
|
- Make ntfs_file_get_block() use map_run_list() so all files now
|
|
support attribute lists.
|
|
- Make ntfs_dir_readpage() almost verbatim copy of
|
|
block_read_full_page() by using ntfs_file_get_block() with only real
|
|
difference being the use of our own async io completion handler
|
|
rather than the default one, thus reducing the amount of code and
|
|
automatically enabling attribute list support for directory indices.
|
|
- Fix bug in load_attribute_list() - forgot to call brelse in error
|
|
code path.
|
|
- Change parameters to find_attr() and lookup_attr(). We no longer
|
|
pass in the upcase table and its length. These can be gotten from
|
|
ctx->ntfs_ino->vol->upcase{_len}. Update all callers.
|
|
- Cleanups in attrib.c.
|
|
- Implement merging of runlists, attrib.c::merge_run_lists() and its
|
|
helpers. (Richard Russon)
|
|
- Attribute lists part 2, attribute extents and multi part runlists:
|
|
enable proper support for LCN_RL_NOT_MAPPED and automatic mapping of
|
|
further runlist parts via attrib.c::map_run_list().
|
|
- Tiny endianness bug fix in decompress_mapping_pairs().
|
|
|
|
tng-0.0.6 - Encrypted directories, bug fixes, cleanups, debugging enhancements.
|
|
|
|
- Enable encrypted directories. (Their index root is marked encrypted
|
|
to indicate that new files in that directory should be created
|
|
encrypted.)
|
|
- Fix bug in NInoBmpNonResident() macro. (Cut and paste error.)
|
|
- Enable $Extend system directory. Most (if not all) extended system
|
|
files do not have unnamed data attributes so ntfs_read_inode() had to
|
|
special case them but that is ok, as the special casing recovery
|
|
happens inside an error code path so there is zero slow down in the
|
|
normal fast path. The special casing is done by introducing a new
|
|
function inode.c::ntfs_is_extended_system_file() which checks if any
|
|
of the hard links in the inode point to $Extend as being their parent
|
|
directory and if they do we assume this is an extended system file.
|
|
- Create a sysctl/proc interface to allow {dis,en}abling of debug output
|
|
when compiled with -DDEBUG. Default is debug messages to be disabled.
|
|
To enable them, one writes a non-zero value to /proc/sys/fs/ntfs-debug
|
|
(if /proc is enabled) or uses sysctl(2) to effect the same (if sysctl
|
|
interface is enabled). Inspired by old ntfs driver.
|
|
- Add debug_msgs insmod/kernel boot parameter to set whether debug
|
|
messages are {dis,en}abled. This is useful to enable debug messages
|
|
during ntfs initialization and is the only way to activate debugging
|
|
when the sysctl interface is not enabled.
|
|
- Cleanup debug output in various places.
|
|
- Remove all dollar signs ($) from the source (except comments) to
|
|
enable compilation on architectures whose gcc compiler does not
|
|
support dollar signs in the names of variables/constants. Attribute
|
|
types now start with AT_ instead of $ and $I30 is now just I30.
|
|
- Cleanup ntfs_lookup() and add consistency check of sequence numbers.
|
|
- Load complete runlist for $MFT/$BITMAP during mount and cleanup
|
|
access functions. This means we now cope with $MFT/$BITMAP being
|
|
spread accross several mft records.
|
|
- Disable modification of mft_zone_multiplier on remount. We can always
|
|
reenable this later on if we really want to, but we will need to make
|
|
sure we readjust the mft_zone size / layout accordingly.
|
|
|
|
tng-0.0.5 - Modernize for 2.5.x and further in line-ing with Al Viro's comments.
|
|
|
|
- Use sb_set_blocksize() instead of set_blocksize() and verify the
|
|
return value.
|
|
- Use sb_bread() instead of bread() throughout.
|
|
- Add index_vcn_size{_bits} to ntfs_inode structure to store the size
|
|
of a directory index block vcn. Apply resulting simplifications in
|
|
dir.c everywhere.
|
|
- Fix a small bug somewhere (but forgot what it was).
|
|
- Change ntfs_{debug,error,warning} to enable gcc to do type checking
|
|
on the printf-format parameter list and fix bugs reported by gcc
|
|
as a result. (Richard Russon)
|
|
- Move inode allocation strategy to Al's new stuff but maintain the
|
|
divorce of ntfs_inode from struct inode. To achieve this we have two
|
|
separate slab caches, one for big ntfs inodes containing a struct
|
|
inode and pure ntfs inodes and at the same time fix some faulty
|
|
error code paths in ntfs_read_inode().
|
|
- Show mount options in proc (inode.c::ntfs_show_options()).
|
|
|
|
tng-0.0.4 - Big changes, getting in line with Al Viro's comments.
|
|
|
|
- Modified (un)map_mft_record functions to be common for read and write
|
|
case. To specify which is which, added extra parameter at front of
|
|
parameter list. Pass either READ or WRITE to this, each has the
|
|
obvious meaning.
|
|
- General cleanups to allow for easier folding in vi.
|
|
- attrib.c::decompress_mapping_pairs() now accepts the old runlist
|
|
argument, and invokes attrib.c::merge_run_lists() to merge the old
|
|
and the new runlists.
|
|
- Removed attrib.c::find_first_attr().
|
|
- Implemented loading of attribute list and complete runlist for $MFT.
|
|
This means we now cope with $MFT being spread across several mft
|
|
records.
|
|
- Adapt to 2.5.2-pre9 and the changed create_empty_buffers() syntax.
|
|
- Adapt major/minor/kdev_t/[bk]devname stuff to new 2.5.x kernels.
|
|
- Make ntfs_volume be allocated via kmalloc() instead of using a slab
|
|
cache. There are too little ntfs_volume structures at any one time
|
|
to justify a private slab cache.
|
|
- Fix bogus kmap() use in async io completion. Now use kmap_atomic().
|
|
Use KM_BIO_IRQ on advice from IRC/kernel...
|
|
- Use ntfs_map_page() in map_mft_record() and create ->readpage method
|
|
for reading $MFT (ntfs_mft_readpage). In the process create dedicated
|
|
address space operations (ntfs_mft_aops) for $MFT inode mapping. Also
|
|
removed the now superfluous exports from the kernel core patch.
|
|
- Fix a bug where kfree() was used insted of ntfs_free().
|
|
- Change map_mft_record() to take ntfs_inode as argument instead of
|
|
vfs inode. Dito for unmap_mft_record(). Adapt all callers.
|
|
- Add pointer to ntfs_volume to ntfs_inode.
|
|
- Add mft record number and sequence number to ntfs_inode. Stop using
|
|
i_ino and i_generation for in-driver purposes.
|
|
- Implement attrib.c::merge_run_lists(). (Richard Russon)
|
|
- Remove use of proper inodes by extent inodes. Move i_ino and
|
|
i_generation to ntfs_inode to do this. Apply simplifications that
|
|
result and remove iget_no_wait(), etc.
|
|
- Pass ntfs_inode everywhere in the driver (used to be struct inode).
|
|
- Add reference counting in ntfs_inode for the ntfs inode itself and
|
|
for the mapped mft record.
|
|
- Extend mft record mapping so we can (un)map extent mft records (new
|
|
functions (un)map_extent_mft_record), and so mappings are reference
|
|
counted and don't have to happen twice if already mapped - just ref
|
|
count increases.
|
|
- Add -o iocharset as alias to -o nls for backwards compatibility.
|
|
- The latest core patch is now tiny. In fact just a single additional
|
|
export is necessary over the base kernel.
|
|
|
|
tng-0.0.3 - Cleanups, enhancements, bug fixes.
|
|
|
|
- Work on attrib.c::decompress_mapping_pairs() to detect base extents
|
|
and setup the runlist appropriately using knowledge provided by the
|
|
sizes in the base attribute record.
|
|
- Balance the get_/put_attr_search_ctx() calls so we don't leak memory
|
|
any more.
|
|
- Introduce ntfs_malloc_nofs() and ntfs_free() to allocate/free a single
|
|
page or use vmalloc depending on the amount of memory requested.
|
|
- Cleanup error output. The __FUNCTION__ "(): " is now added
|
|
automatically. Introduced a new header file debug.h to support this
|
|
and also moved ntfs_debug() function into it.
|
|
- Make reading of compressed files more intelligent and especially get
|
|
rid of the vmalloc_nofs() from readpage(). This now uses per CPU
|
|
buffers (allocated at first mount with cluster size <= 4kiB and
|
|
deallocated on last umount with cluster size <= 4kiB), and
|
|
asynchronous io for the compressed data using a list of buffer heads.
|
|
Er, we use synchronous io as async io only works on whole pages
|
|
covered by buffers and not on individual buffer heads...
|
|
- Bug fix for reading compressed files with sparse compression blocks.
|
|
|
|
tng-0.0.2 - Now handles larger/fragmented/compressed volumes/files/dirs.
|
|
|
|
- Fixed handling of directories when cluster size exceeds index block
|
|
size.
|
|
- Hide DOS only name space directory entries from readdir() but allow
|
|
them in lookup(). This should fix the problem that Linux doesn't
|
|
support directory hard links, while still allowing access to entries
|
|
via their short file name. This also has the benefit of mimicking
|
|
what Windows users are used to, so it is the ideal solution.
|
|
- Implemented sync_page everywhere so no more hangs in D state when
|
|
waiting for a page.
|
|
- Stop using bforget() in favour of brelse().
|
|
- Stop locking buffers unnecessarily.
|
|
- Implemented compressed files (inode->mapping contains uncompressed
|
|
data, raw compressed data is currently bread() into a vmalloc()ed
|
|
memory buffer).
|
|
- Enable compressed directories. (Their index root is marked compressed
|
|
to indicate that new files in that directory should be created
|
|
compressed.)
|
|
- Use vsnprintf rather than vsprintf in the ntfs_error and ntfs_warning
|
|
functions. (Thanks to Will Dyson for pointing this out.)
|
|
- Moved the ntfs_inode and ntfs_volume (the former ntfs_inode_info and
|
|
ntfs_sb_info) out of the common inode and super_block structures and
|
|
started using the generic_ip and generic_sbp pointers instead. This
|
|
makes ntfs entirely private with respect to the kernel tree.
|
|
- Detect compiler version and abort with error message if gcc less than
|
|
2.96 is used.
|
|
- Fix bug in name comparison function in unistr.c.
|
|
- Implement attribute lists part 1, the infrastructure: search contexts
|
|
and operations, find_external_attr(), lookup_attr()) and make the
|
|
code use the infrastructure.
|
|
- Fix stupid buffer overflow bug that became apparent on larger run
|
|
list containing attributes.
|
|
- Fix bugs in readdir() that became apparent on larger directories.
|
|
|
|
The driver is now really useful and survives the test
|
|
find . -type f -exec md5sum "{}" \;
|
|
without any error messages on a over 1GiB sized partition with >16k
|
|
files on it, including compressed files and directories and many files
|
|
and directories with attribute lists.
|
|
|
|
tng-0.0.1 - The first useful version.
|
|
|
|
- Added ntfs_lookup().
|
|
- Added default upcase generation and handling.
|
|
- Added compile options to be shown on module init.
|
|
- Many bug fixes that were "hidden" before.
|
|
- Update to latest kernel.
|
|
- Added ntfs_readdir().
|
|
- Added file operations for mmap(), read(), open() and llseek(). We just
|
|
use the generic ones. The whole point of going through implementing
|
|
readpage() methods and where possible get_block() call backs is that
|
|
this allows us to make use of the generic high level methods provided
|
|
by the kernel.
|
|
|
|
The driver is now actually useful! Yey. (-: It undoubtedly has got bugs
|
|
though and it doesn't implement accesssing compressed files yet. Also,
|
|
accessing files with attribute list attributes is not implemented yet
|
|
either. But for small or simple filesystems it should work and allow
|
|
you to list directories, use stat on directory entries and the file
|
|
system, open, read, mmap and llseek around in files. A big mile stone
|
|
has been reached!
|
|
|
|
tng-0.0.0 - Initial version tag.
|
|
|
|
Initial driver implementation. The driver can mount and umount simple
|
|
NTFS filesystems (i.e. ones without attribute lists in the system
|
|
files). If the mount fails there might be problems in the error handling
|
|
code paths, so be warned. Otherwise it seems to be loading the system
|
|
files nicely and the mft record read mapping/unmapping seems to be
|
|
working nicely, too. Proof of inode metadata in the page cache and non-
|
|
resident file unnamed stream data in the page cache concepts is thus
|
|
complete.
|