-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
Add ability to write to resident attributes.
SetAttributeDataLength() - Check if the file is memory mapped before truncating
+InternalSetResidentAttributeLength() - Used by SetAttributeDataLength()
svn path=/branches/GSoC_2016/NTFS/; revision=71820
Allow for an existing file to be opened with FILE_OVERWRITE, FILE_OVERWRITE_IF, or FILE_SUPERSEDE dispositions, and truncate that file. This allows for a file to be opened and saved in Notepad.exe [provided that file is non-resident and its allocation size doesn't need to change].
svn path=/branches/GSoC_2016/NTFS/; revision=71680
Update a file's size in the relevant $FILE_NAME attribute of the index entry in the parent directory.
+UpdateFileNameRecord() - Searches a parent directory for the proper index entry, then updates the file sizes in that entry.
+UpdateIndexEntryFileNameSize() - Recursively searches directory index and applies the size update.
svn path=/branches/GSoC_2016/NTFS/; revision=71664
Fix Up AddFixupArray - It needs to accept a PNTFS_RECORD_HEADER for parameter 2, not a PFILE_RECORD_HEADER.
svn path=/branches/GSoC_2016/NTFS/; revision=71662
When writing to a file, increase the file size if trying to write past the end.
*FindAttribute() has been given an optional pointer to a ULONG that will receive the offset of the found attribute from the beginning of the record. This is to allow for found attributes to be written back into their file records.
+SetAttributeDataLength()
+UpdateFileRecord() - Updates a file record in the master file table at a given index.
+AddFixupArray() - Prepares a file record or directory index for writing to the disk.
svn path=/branches/GSoC_2016/NTFS/; revision=71660
Add fixes to WriteAttribute():
-Remove erroneous check for end of run (before writing to the last run returned)
-Properly dereference RealLengthWritten pointer, as reported in CR-90
svn path=/branches/GSoC_2016/NTFS/; revision=71616
To check that these changes are correct, checkout in a directory (let's call it "ros_svn") the /trunk/reactos/ of our read-only SVN repo r76032 and in /trunk/reactos/modules/, the rosapps, rostests and wallpapers.
In a second directory (let's call it "ros_git"), clone the corresponding Git-converted ReactOS directory.
Before applying this patch (and the previous one that added back the empty directories), you should see additional files in ros_git that are not in ros_svn, corresponding to these files I'm deleting here (plus some .gitignore files),
and you should also see additional files in ros_svn that do not appear in ros_git: these are the empty directories I've restored in my previous patch.
Now, after the application of both the previous patch that restores the empty directories (and deletes the .gitignore files), and this patch that removes the ghost files, you should only see that the only differences
between ros_git and ros_svn are the extra .keep files in the empty directories, and that's all!
Command-line for the tests:
diff --strip-trailing-cr -r ros_svn ros_git > diff_svn2git.txt
"-r" means recursive, and "--strip-trailing-cr" ignores the CR-LF vs. LF (or CR) EOLs.
(*): by "ghost" old(*) files I understand files that existed previously in the far past, that then were deleted long ago in SVN, and that popped out back during the Git migration.
