GitLab

      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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      typed enums.  This completes the sparse annotations in NTFS.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

- Fix 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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

- Fix all the sparse bitwise warnings.  Had to change all the enums
  storing little endian values to #defines because we cannot set enums
  to be little endian so we had lots of bitwise warnings from sparse.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

- 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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

- 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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

        inode size has changed and to only output an error if so.
      - Rename fs/ntfs/attrib.h::attribute_value_length() to ntfs_attr_size().
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      and ntfs_filldir() as per suggestion from Al Viro.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

        kernel.
      - 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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

- Minor cleanup of fs/ntfs/inode.c::ntfs_init_locked_inode().
- Bump version number and update Documentation/filesystems/ntfs.txt
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      - 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.
      - Force use of ntfs_attr_find() in ntfs_attr_lookup() when searching
	for the attribute list attribute itself.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      ntfs_attr_{{re,}init,get,put}_search_ctx() as well as the type
      attr_search_context to ntfs_attr_search_ctx.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      find_external_attr() to ntfs_external_attr_find() to cleanup the
      namespace a bit and to be more consistent with libntfs.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      because the code itself is using the ntfs_lock semaphore which
      provides safe locking.  (Ingo Molnar)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      the calculation of total/free inodes as used by statfs().
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      - 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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      includes functions to set/clear a single bit or a run of bits.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      and directories (fs/ntfs/dir.c).
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      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().
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      and if so, mark the quotas out of date.  This causes windows to
      rescan the volume on boot and update all quota entries.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      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).
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      accessing them to ensure we never see corrupt data while the page is
      under writeout.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      PAGE_CACHE_SHIFT by casting page->index to s64 in fs/ntfs/aops.c.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

        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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

- 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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

- 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.
- Fix a silly bug that caused a deadlock in ntfs_mft_writepage().
  For inode 0, i.e. $MFT itself, we cannot use ilookup5() from
  there because the inode is already locked by the kernel
  (fs/fs-writeback.c::__sync_single_inode()) and ilookup5() waits
  until the inode is unlocked before returning it and it never gets
  unlocked because ntfs_mft_writepage() never returns.  )-:
  Fortunately, we have inode 0 pinned in icache for the duration
  of the mount so we can access it directly.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      information flags (fs/ntfs/super.c).
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

      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.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>