Initial commit - WPinternals 2.6

2026-06-17 12:50:11 +10:00 · 2018-10-25 22:35:49 +02:00
commit 396ae57f05
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+//
+// Copyright (c) 2008-2011, Kenneth Bell
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+namespace DiscUtils.Ntfs.Internals
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// An entry within the Master File Table.
+    /// </summary>
+    public sealed class MasterFileTableEntry
+    {
+        private INtfsContext _context;
+        private FileRecord _fileRecord;
+
+        internal MasterFileTableEntry(INtfsContext context, FileRecord fileRecord)
+        {
+            _context = context;
+            _fileRecord = fileRecord;
+        }
+
+        /// <summary>
+        /// Gets the index of this entry in the Master File Table.
+        /// </summary>
+        public long Index
+        {
+            get { return _fileRecord.LoadedIndex; }
+        }
+
+        /// <summary>
+        /// Gets the change identifier that is updated each time the file is modified by Windows, relates to the NTFS log file.
+        /// </summary>
+        /// <remarks>
+        /// The NTFS log file provides journalling, preventing meta-data corruption in the event of a system crash.
+        /// </remarks>
+        public long LogFileSequenceNumber
+        {
+            get { return (long)_fileRecord.LogFileSequenceNumber; }
+        }
+
+        /// <summary>
+        /// Gets the revision number of the entry.
+        /// </summary>
+        /// <remarks>
+        /// Each time an entry is allocated or de-allocated, this number is incremented by one.
+        /// </remarks>
+        public int SequenceNumber
+        {
+            get { return _fileRecord.SequenceNumber; }
+        }
+
+        /// <summary>
+        /// Gets the number of hard links referencing this file.
+        /// </summary>
+        public int HardLinkCount
+        {
+            get { return _fileRecord.HardLinkCount; }
+        }
+
+        /// <summary>
+        /// Gets the flags indicating the nature of the entry.
+        /// </summary>
+        public MasterFileTableEntryFlags Flags
+        {
+            get { return (MasterFileTableEntryFlags)_fileRecord.Flags; }
+        }
+
+        /// <summary>
+        /// Gets the identity of the base entry for files split over multiple entries.
+        /// </summary>
+        /// <remarks>
+        /// All entries that form part of the same file have the same value for
+        /// this property.
+        /// </remarks>
+        public MasterFileTableReference BaseRecordReference
+        {
+            get { return new MasterFileTableReference(_fileRecord.BaseFile); }
+        }
+
+        /// <summary>
+        /// Gets the next attribute identity that will be allocated.
+        /// </summary>
+        public int NextAttributeId
+        {
+            get { return _fileRecord.NextAttributeId; }
+        }
+
+        /// <summary>
+        /// Gets the index of this entry in the Master File Table (as stored in the entry itself).
+        /// </summary>
+        /// <remarks>
+        /// Note - older versions of Windows did not store this value, so it may be Zero.
+        /// </remarks>
+        public long SelfIndex
+        {
+            get { return _fileRecord.MasterFileTableIndex; }
+        }
+
+        /// <summary>
+        /// Gets the attributes contained in this entry.
+        /// </summary>
+        public ICollection<GenericAttribute> Attributes
+        {
+            get
+            {
+                List<GenericAttribute> result = new List<GenericAttribute>();
+                foreach (var attr in _fileRecord.Attributes)
+                {
+                    result.Add(GenericAttribute.FromAttributeRecord(_context, attr));
+                }
+
+                return result;
+            }
+        }
+    }
+}