Exemplo n.º 1
0
        internal DirectoryEntry AddEntry(File file, string name, FileNameNamespace nameNamespace)
        {
            if (name.Length > 255)
            {
                throw new IOException("Invalid file name, more than 255 characters: " + name);
            }
            else if (name.IndexOfAny(new char[] { '\0', '/' }) != -1)
            {
                throw new IOException(@"Invalid file name, contains '\0' or '/': " + name);
            }

            FileNameRecord newNameRecord = file.GetFileNameRecord(null, true);

            newNameRecord.FileNameNamespace = nameNamespace;
            newNameRecord.FileName          = name;
            newNameRecord.ParentDirectory   = MftReference;

            NtfsStream nameStream = file.CreateStream(AttributeType.FileName, null);

            nameStream.SetContent(newNameRecord);

            file.HardLinkCount++;
            file.UpdateRecordInMft();

            Index[newNameRecord] = file.MftReference;

            Modified();
            UpdateRecordInMft();

            return(new DirectoryEntry(this, file.MftReference, newNameRecord));
        }
Exemplo n.º 2
0
        internal void FreshenFileName(FileNameRecord fileName, bool updateMftRecord)
        {
            //
            // Freshen the record from the definitive info in the other attributes
            //
            StandardInformation si           = StandardInformation;
            NtfsAttribute       anonDataAttr = GetAttribute(AttributeType.Data, null);

            fileName.CreationTime     = si.CreationTime;
            fileName.ModificationTime = si.ModificationTime;
            fileName.MftChangedTime   = si.MftChangedTime;
            fileName.LastAccessTime   = si.LastAccessTime;
            fileName.Flags            = si.FileAttributes;

            if (_dirty && NtfsTransaction.Current != null)
            {
                fileName.MftChangedTime = NtfsTransaction.Current.Timestamp;
            }

            // Directories don't have directory flag set in StandardInformation, so set from MFT record
            if ((_records[0].Flags & FileRecordFlags.IsDirectory) != 0)
            {
                fileName.Flags |= FileAttributeFlags.Directory;
            }

            if (anonDataAttr != null)
            {
                fileName.RealSize      = (ulong)anonDataAttr.PrimaryRecord.DataLength;
                fileName.AllocatedSize = (ulong)anonDataAttr.PrimaryRecord.AllocatedLength;
            }

            if (updateMftRecord)
            {
                foreach (NtfsStream stream in GetStreams(AttributeType.FileName, null))
                {
                    FileNameRecord fnr = stream.GetContent <FileNameRecord>();
                    if (fnr.Equals(fileName))
                    {
                        fnr        = new FileNameRecord(fileName);
                        fnr.Flags &= ~FileAttributeFlags.ReparsePoint;
                        stream.SetContent(fnr);
                    }
                }
            }
        }
Exemplo n.º 3
0
        public FileNameRecord GetFileNameRecord(string name, bool freshened)
        {
            NtfsAttribute[] attrs = GetAttributes(AttributeType.FileName);
            StructuredNtfsAttribute <FileNameRecord> attr = null;

            if (String.IsNullOrEmpty(name))
            {
                if (attrs.Length != 0)
                {
                    attr = (StructuredNtfsAttribute <FileNameRecord>)attrs[0];
                }
            }
            else
            {
                foreach (StructuredNtfsAttribute <FileNameRecord> a in attrs)
                {
                    if (_context.UpperCase.Compare(a.Content.FileName, name) == 0)
                    {
                        attr = a;
                    }
                }

                if (attr == null)
                {
                    throw new FileNotFoundException("File name not found on file", name);
                }
            }

            FileNameRecord fnr = attr == null ? new FileNameRecord() : new FileNameRecord(attr.Content);

            if (freshened)
            {
                FreshenFileName(fnr, false);
            }

            return(fnr);
        }
Exemplo n.º 4
0
        internal void RemoveEntry(DirectoryEntry dirEntry)
        {
            File file = _context.GetFileByRef(dirEntry.Reference);

            FileNameRecord nameRecord = dirEntry.Details;

            Index.Remove(dirEntry.Details);

            foreach (NtfsStream stream in file.GetStreams(AttributeType.FileName, null))
            {
                FileNameRecord streamName = stream.GetContent <FileNameRecord>();
                if (nameRecord.Equals(streamName))
                {
                    file.RemoveStream(stream);
                    break;
                }
            }

            file.HardLinkCount--;
            file.UpdateRecordInMft();

            Modified();
            UpdateRecordInMft();
        }
Exemplo n.º 5
0
        internal static string EntryAsString(IndexEntry entry, string fileName, string indexName)
        {
            IByteArraySerializable keyValue  = null;
            IByteArraySerializable dataValue = null;

            // Try to guess the type of data in the key and data fields from the filename and index name
            if (indexName == "$I30")
            {
                keyValue  = new FileNameRecord();
                dataValue = new FileRecordReference();
            }
            else if (fileName == "$ObjId" && indexName == "$O")
            {
                keyValue  = new ObjectIds.IndexKey();
                dataValue = new ObjectIdRecord();
            }
            else if (fileName == "$Reparse" && indexName == "$R")
            {
                keyValue  = new ReparsePoints.Key();
                dataValue = new ReparsePoints.Data();
            }
            else if (fileName == "$Quota")
            {
                if (indexName == "$O")
                {
                    keyValue  = new Quotas.OwnerKey();
                    dataValue = new Quotas.OwnerRecord();
                }
                else if (indexName == "$Q")
                {
                    keyValue  = new Quotas.OwnerRecord();
                    dataValue = new Quotas.QuotaRecord();
                }
            }
            else if (fileName == "$Secure")
            {
                if (indexName == "$SII")
                {
                    keyValue  = new SecurityDescriptors.IdIndexKey();
                    dataValue = new SecurityDescriptors.IdIndexData();
                }
                else if (indexName == "$SDH")
                {
                    keyValue  = new SecurityDescriptors.HashIndexKey();
                    dataValue = new SecurityDescriptors.IdIndexData();
                }
            }

            try
            {
                if (keyValue != null && dataValue != null)
                {
                    keyValue.ReadFrom(entry.KeyBuffer, 0);
                    dataValue.ReadFrom(entry.DataBuffer, 0);
                    return("{" + keyValue + "-->" + dataValue + "}");
                }
            }
            catch
            {
                return("{Parsing-Error}");
            }

            return("{Unknown-Index-Type}");
        }