AddRun() - Allow for resizing the size of the data runs when the attribute isn't the last in the file record. Fix some comments.
CreateIndexBufferFromBTreeNode(), CreateIndexRootFromBTree - Fix math of IndexSize when checking if the index buffer is too large.
InternalSetResidentAttributeLength() - Allow changing the length of an attribute in the middle of a file record. Adjust the position of every attribute after the one being resized.
+MoveAttributes() - Moves a block of attributes to a new location in the file Record.
PrintAllVCNs() - Add consideration for an index allocation with a size of 0.
WriteAttribute() - Add optional parameter for a pointer to the file record being written to. If passed a file record, WriteAttribute() will skip reading the file record from disk, and will update the file record in memory before returning. This helps callers that use the file record after writing an attribute to stay in-sync with what's on disk.
svn path=/branches/GSoC_2016/NTFS/; revision=75554
-PrepareAttributeContext() - update to allocate memory for pRecord. Don't assume allocations are succeeding.
-ReleaseAttributeContext() - update to free memory for pRecord.
-InternalSetResidentAttributeLength() - Increase size of AttrContext->pRecord as needed. Update to return an NTSTATUS.
-SetResidentAttributeDataLength() - Fix bug that could occur when migrating resident attributes to non-resident if AttrContext->pRecord is too small for the new attribute.
-AddRun() - Fix a bug by reallocating AttrContext->pRecord if the record needs to be enlarged.
svn path=/branches/GSoC_2016/NTFS/; revision=75493
-CreateBTreeFromIndex() - Fix memory allocation; allocate sizeof(B_TREE_KEY) bytes for the key, not the size of the pointer. Add support for child nodes. Update parameter list.
-CreateIndexRootFromBTree() - Update Header->Flags if any of index root's keys have sub-nodes.
+CreateIndexBufferFromBTreeNode() - Converts a B-Tree node to an index buffer to be written to the index allocation.
+UpdateIndexAllocation() - Updates all of the stale nodes in an index allocation based on a PB_TREE.
+UpdateIndexNode() - Writes a B-Tree node into the index allocation.
+CreateBTreeKeyFromFilename() - Creates a PB_TREE_KEY based on a FILENAME_ATTRIBUTE.
-DestroyBTreeKey() - Destroy a child node, if present.
-DumpBTreeKey() - Dump a child node, if present.
-DumpBTreeNode() - Include Node->KeyCount in output.
-NtfsAddFilenameToDirectory() - Call UpdateIndexAllocation() prior to CreateIndexRootFromBTree().
-Update B_TREE_FILENAME_NODE with members to keep track of its existence on disk.
svn path=/branches/GSoC_2016/NTFS/; revision=75428
+PrintAllVCNs() - Diagnostic function which prints VCN of every node in an index allocation.
+GetAllocationOffsetFromVCN() - Calculates location of an index buffer from the node's VCN.
+GetInfoClassName() - Gets a string representation of an info class enumeration, to speed up development of unimplemented classes.
-NtfsSetInformation() & NtfsQueryInformation() - Use GetInfoClassName to report unhandled information classes.
-CompareTreeKeys() - Add a comment and clarify some comments.
-NtfsAddFilenameToDirectory() - Don't try to update the size of Index Root on disk if the attribute length hasn't changed.
svn path=/branches/GSoC_2016/NTFS/; revision=75424
-Add define for indexed flag for resident attributes, RA_INDEXED.
-CreateBTreeFromIndex() - Don't try to read index entries beyond attribute length.
-Move NtfsAddFileNameToDirectory() from dirctl.c to mft.c (no changes to function).
-SetResidentAttributeDataLength() - Don't try to free AttribData if it hasn't been allocated. Cast IndexRecord to PUCHAR for WriteAttribute(), and cast BitmapData to PCHAR for ReadAttribute() (make gcc happy).
-Replace magic number 16 with a define, NTFS_FILE_FIRST_USER_FILE.
svn path=/branches/GSoC_2016/NTFS/; revision=75371
-Add ATTR_RECORD_ALIGNMENT define to replace magic value of 8 when we need to adjust an attribute's beginning or length.
-Don't use int's.
-GetPackedByteCount() - Remove unused "bytes" variable.
svn path=/branches/GSoC_2016/NTFS/; revision=75288
FindAttribute() - Use * sizeof(WCHAR) in place bit-shifting wizardry.
IncreaseMftSize() - Remove two useless casts. Return error code if WriteAttribute() fails.
SetNonResidentAttributeDataLength() - Assert that AttrContext parameter describes a NonResident attribute. When migrating a resident attribute to non-resident, don't leak memory if FsRtlInitializeLargeMcb() throws an exception, and don't mark the attribute as non-resident until after the Mcb is initialized.
InternalSetResidentAttributeLength() and SetResidentAttributeLength() - Assert that AttrContext parameter describes a resident attribute.
AddNewMftEntry() - Simplify math of backing up and restoring reserved bits by changing BitmapData to PUCHAR type. Don't attempt to modify a volume with more than 2^32 clusters.
AddFixupArray() - Use ULONG in place of int.
svn path=/branches/GSoC_2016/NTFS/; revision=75284
NtfsSetEndOfFile() - Make fileNameAttribute and filename variables uppercase. Don't leak FileRecord if we can't truncate the file. Don't leak memory if there's no FileName attribute.
svn path=/branches/GSoC_2016/NTFS/; revision=75283
-NtfsOpenFile() - Replace an ExFreePool() with ExFreePoolWithTag().
-NtfsCreateFile() - Fix broken cast with BooleanFlagOn() macro.
-NtfsAddFilenameToDirectory() - Remove an extra cast. Return an error if we fail to allocate I30IndexRoot.
-NtfsGetNextPathElement(), NtfsWSubString(), NtfsGetFCBForFile() - Use PCWSTR in place of const PWCHAR or PWCHAR where it makes sense.
svn path=/branches/GSoC_2016/NTFS/; revision=75281
-CompareTreeKeys() - Assert that the first key isn't the dummy key.
-CreateIndexRootFromBTree() - Assert that CurrentKey->IndexEntry->Length isn't 0.
-DumpBTreeKey() - Use sizeof(WCHAR) in place of magic 2.
-NtfsInsertKey() - Check for allocation failure of NewKey.
svn path=/branches/GSoC_2016/NTFS/; revision=75280
-AddFileName() - Don't use dedicated buffer for FileNameNoPath, just point into FileObject->FileName's buffer. Don't use RtlCopyUnicodeString(), just update pointers.
-AddRun() - Fix an SEH2_YIELD with missing return statement.
-FreeClusters() - Use ULONG_MAX in place of 0xffffffff.
-NtfsDumpIndexRootAttribute() - Use consistent UpperCase naming convention. Use BooleanFlagOn() macro where appropriate. Replace magic 8 with sizeof(ULONGLONG).
-GetFileNameAttributeLength() - Add documentation.
svn path=/branches/GSoC_2016/NTFS/; revision=75279
NtfsAddFilenameToDirectory() - Add CaseSensitive parameter. Update to use new B-Tree code: First, the index is read and converted to a B-Tree in memory. Next, a key for the new file is inserted into the tree. Finally, the tree is converted back to an index root attribute which is written to disk.
+btree.c - Includes functions related to B-Trees (AKA B*Trees).
ntfs.h - Added several structures for representing B-Trees in memory.
Known limitations: For simplicity, only trees with a depth of one are currently supported (i.e. an ordered list of filenames). Directories that have or will require an index allocation to store all their filenames are still TODO. As a consequence, the user will only be able to create about 6 files in a directory.
svn path=/branches/GSoC_2016/NTFS/; revision=75223
Improve, add, or fix some DPRINTs. In particular, ULONG's should use %lu, not %u. Also, don't be silent about filesystem corruption.
NtfsFindMftRecord() - move CaseSensitive parameter before output parameter in parameter list.
svn path=/branches/GSoC_2016/NTFS/; revision=75199
Whether or not a filename should be interpreted as case-sensitive is dependent on a flag passed to the driver when a file is created (opened); it's separate from the namespace associated with the file being accessed.
svn path=/branches/GSoC_2016/NTFS/; revision=75178
-AddNewMftEntry() - Increase size of MFT as needed. Fix math for bitmap length. Don't assign file records to MFT indices 0x10 - 0x17; In Windows, these records aren't used unless they have to be, even though they are marked as unused in the bitmap.
+IncreaseMftSize() - Adds room for additional file records in the master file table.
-BrowseIndexEntries() - allow for the rare situation when a non-system file has an MFT index of 0x10.
svn path=/branches/GSoC_2016/NTFS/; revision=75056
-SetAttributeDataLength() has been split into two functions, SetNonResidentAttributeDataLength() and SetResidentAttributeDataLength(). This should improve code readibility and allows for resizing an attribute when there's no FileObject associated with it.
-Added "MftDataOffset" member to DEVICE_EXTENSION, which stores the offset of the Mft's $DATA attribute. (I'm starting to think it's better to add a member for offset to NTFS_ATTR_CONTEXT directly, but I'll save that level of restructuring for a future commit.)
svn path=/branches/GSoC_2016/NTFS/; revision=75055
AddFileName() - Add a parameter to receive the Mft index of the parent directory. Fix so the name of the file will be stored in the attribute, not the name of the directory.
NtfsCreateFile() - Open a file that was successfully created, instead of assuming failure.
NtfsCreateFileRecord() - Add the filename attribute of the created file to the parent directory's index.
+NtfsAddFilenameToDirectory() - Adds a $FILE_NAME attribute to a given directory index. Presently, a file can be created in an empty directory only.
AddNewMftEntry() - Add a parameter to receive the mft index where the new entry was stored.
svn path=/branches/GSoC_2016/NTFS/; revision=74970
[BOOTDATA] - Add a commented-out section to hivesys.inf which can add the required key to enable NTFS write support.
svn path=/branches/GSoC_2016/NTFS/; revision=74685
-Handle IRP_MJ_SET_INFORMATION IRP requests.
+NtfsSetEndOfFile() - Sets the end of file (file size) for a given file.
+NtfsSetInformation() - Sets the specified file information. At this point, only FileEndOfFileInformation is fully implemented. FileAllocationInformation is handled the same way and not truly implemented, but this works well enough for SetEndOfFile().
Overwriting a file in NTFS should now work in the majority of use cases.
svn path=/branches/GSoC_2016/NTFS/; revision=74675
-Modify SetAttributeDataLength() to allow a resident attribute to migrate to non-resident if the attribute grows too large to remain resident.
-Fix values returned by NtfsAllocateClusters() in case of error; return error codes, not 0.
svn path=/branches/GSoC_2016/NTFS/; revision=74524
-Add a new member to the NTFS_ATTR_CONTEXT struct, a LARGE_MCB. This allows an attribute context to describe the cluster mapping of a non-resident file while allowing that mapping to change dynamically, without the context itself needing to be resized. This fixes problems which sometimes arose from resizing files.
-Remove hacky code from NtfsWriteFile() for dealing with "stale" contexts. This fixes that issue.
-Update SetDataAttributeLength(), PrepareAttributeContext(), ReleaseAttributeContext(), FreeClusters(), and AddRun() for the new member.
-Update ReadAttribute() and WriteAttribute() to work with the changed structure. A very-soon-to-come commit will overhaul these functions so they'll operate directly on the LARGE_MCB, instead of converting to and from a packed list of data runs. (Sparse files are broken until then.)
-Rename "RunBufferOffset" to "RunBufferSize" in several places where appropriate.
-Fix, improve, and add some comments.
svn path=/branches/GSoC_2016/NTFS/; revision=74523
+AddStandardInformation(), +AddData(), +AddFileName() - Add attributes to a file record
+NtfsCreateFileRecord() - Creates a new file record and saves it to the MFT.
+AddNewMftEntry() - Adds a file record to the MFT.
NtfsCreateFile() - Modified to create a file record on a file-creation request (file creation is still unsupported; the created file needs to be added to the parent's directory index).
+SetFileRecordEnd() - Establishes a new file record size
UpdateFileRecord() - Improved documentation
InternalSetResidentAttributeLength() - Updated to use SetFileRecordEnd().
svn path=/branches/GSoC_2016/NTFS/; revision=74321
Add some fixes to attrib.c, as suggested by Pierre Schweitzer:
*ConvertLargeMCBToDataRuns() - Use MS portable type, ULONG, for variable i.
*FreeClusters(), AddRun() - Check for invalid parameter before allocating memory, and confirm the memory is allocated.
*ConvertDataRunsToLargeMCB(), AddRun() - Avoid code duplication by using ExRaiseStatus() in try block, and return accurate status via _SEH2_GetExceptionCode().
svn path=/branches/GSoC_2016/NTFS/; revision=72422
Implement AddRun(). Add support functions and documentation.
+ConvertDataRunsToLargeMCB()
+ConvertLargeMCBToDataRuns()
*SetAttributeDataLength(), *NtfsWriteFile() - Update for AddRun() implementation. Add hack to SetAttributeDataLength() to allow notepad.exe to save files until freeing clusters is implemented.
svn path=/branches/GSoC_2016/NTFS/; revision=71942
Add support functions, fix warning from previous commit.
+NtfsDumpDataRuns(), +NtfsDumpDataRunData() - Provide diagnostic output.
+GetPackedByteCount() - Used to encode data runs.
svn path=/branches/GSoC_2016/NTFS/; revision=71921
