Initial commit - WPinternals 2.6

DiscUtils/Partitions/BiosPartitionInfo.cs

@@ -0,0 +1,136 @@
+//
+// 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.Partitions
+{
+    using System;
+    using System.IO;
+
+    /// <summary>
+    /// Provides access to partition records in a BIOS (MBR) partition table.
+    /// </summary>
+    public sealed class BiosPartitionInfo : PartitionInfo
+    {
+        private BiosPartitionRecord _record;
+        private BiosPartitionTable _table;
+
+        internal BiosPartitionInfo(BiosPartitionTable table, BiosPartitionRecord record)
+        {
+            _table = table;
+            _record = record;
+        }
+
+        /// <summary>
+        /// Gets the first sector of the partion (relative to start of disk) as a Logical Block Address.
+        /// </summary>
+        public override long FirstSector
+        {
+            get { return _record.LBAStartAbsolute; }
+        }
+
+        /// <summary>
+        /// Gets the last sector of the partion (relative to start of disk) as a Logical Block Address (inclusive).
+        /// </summary>
+        public override long LastSector
+        {
+            get { return _record.LBAStartAbsolute + _record.LBALength - 1; }
+        }
+
+        /// <summary>
+        /// Always returns <see cref="System.Guid"/>.Empty.
+        /// </summary>
+        public override Guid GuidType
+        {
+            get { return Guid.Empty; }
+        }
+
+        /// <summary>
+        /// Gets the type of the partition.
+        /// </summary>
+        public override byte BiosType
+        {
+            get { return _record.PartitionType; }
+        }
+
+        /// <summary>
+        /// Gets the type of the partition as a string.
+        /// </summary>
+        public override string TypeAsString
+        {
+            get { return _record.FriendlyPartitionType; }
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether this partition is active (bootable).
+        /// </summary>
+        public bool IsActive
+        {
+            get { return _record.Status != 0; }
+        }
+
+        /// <summary>
+        /// Gets the start of the partition as a CHS address.
+        /// </summary>
+        public ChsAddress Start
+        {
+            get { return new ChsAddress(_record.StartCylinder, _record.StartHead, _record.StartSector); }
+        }
+
+        /// <summary>
+        /// Gets the end (inclusive) of the partition as a CHS address.
+        /// </summary>
+        public ChsAddress End
+        {
+            get { return new ChsAddress(_record.EndCylinder, _record.EndHead, _record.EndSector); }
+        }
+
+        /// <summary>
+        /// Gets the index of the partition in the primary partition table, or <c>-1</c> if not a primary partition.
+        /// </summary>
+        public int PrimaryIndex
+        {
+            get { return _record.Index; }
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether the partition is a primary (rather than extended) partition.
+        /// </summary>
+        public bool IsPrimary
+        {
+            get { return PrimaryIndex >= 0; }
+        }
+
+        internal override PhysicalVolumeType VolumeType
+        {
+            get { return PhysicalVolumeType.BiosPartition; }
+        }
+
+        /// <summary>
+        /// Opens a stream to access the content of the partition.
+        /// </summary>
+        /// <returns>The new stream.</returns>
+        public override SparseStream Open()
+        {
+            return _table.Open(_record);
+        }
+    }
+}