Rename 'vm.disk' package to 'virtualization.disk'

1 files changed, 0 insertions, 232 deletions

diff --git a/src/main/java/org/openslx/vm/disk/DiskImageQcow2.java b/src/main/java/org/openslx/vm/disk/DiskImageQcow2.java
deleted file mode 100644
index e569708..0000000
--- a/src/main/java/org/openslx/vm/disk/DiskImageQcow2.java
+++ /dev/null
@@ -1,232 +0,0 @@
-package org.openslx.vm.disk;
-
-import java.io.RandomAccessFile;
-
-import org.openslx.virtualization.Version;
-
-/**
- * QCOW2 disk image for virtual machines.
- * 
- * A QCOW2 disk image consists of a header, one L1 table and several L2 tables used for lookup data
- * clusters in the file via a two-level lookup. The QCOW2 header contains the following fields:
- * 
- * <pre>
- *   QCOW2 (version 2 and 3) header format:
- *   
- *   magic                   (4 byte)
- *   version                 (4 byte)
- *   backing_file_offset     (8 byte)
- *   backing_file_size       (4 byte)
- *   cluster_bits            (4 byte)
- *   size                    (8 byte)
- *   crypt_method            (4 byte)
- *   l1_size                 (4 byte)
- *   l1_table_offset         (8 byte)
- *   refcount_table_offset   (8 byte)
- *   refcount_table_clusters (4 byte)
- *   nb_snapshots            (4 byte)
- *   snapshots_offset        (8 byte)
- *   incompatible_features   (8 byte)  [*]
- *   compatible_features     (8 byte)  [*]
- *   autoclear_features      (8 byte)  [*]
- *   refcount_order          (8 byte)  [*]
- *   header_length           (4 byte)  [*]
- *
- *   [*] these fields are only available in the QCOW2 version 3 header format
- * </pre>
- * 
- * @author Manuel Bentele
- * @version 1.0
- */
-public class DiskImageQcow2 extends DiskImage
-{
-	/**
-	 * Big endian representation of the big endian QCOW2 magic bytes <code>QFI\xFB</code>.
-	 */
-	private static final int QCOW2_MAGIC = 0x514649fb;
-
-	/**
-	 * Creates a new QCOW2 disk image from an existing QCOW2 image file.
-	 * 
-	 * @param diskImage file to a QCOW2 disk storing the image content.
-	 */
-	DiskImageQcow2( RandomAccessFile diskImage )
-	{
-		super( diskImage );
-	}
-
-	/**
-	 * Probe specified file with unknown format to be a QCOW2 disk image file.
-	 * 
-	 * @param diskImage file with unknown format that should be probed.
-	 * @return state whether file is a QCOW2 disk image or not.
-	 * 
-	 * @throws DiskImageException cannot probe specified file with unknown format.
-	 */
-	public static boolean probe( RandomAccessFile diskImage ) throws DiskImageException
-	{
-		final boolean isQcow2ImageFormat;
-
-		// goto the beginning of the disk image to read the disk image
-		final int diskImageMagic = DiskImageUtils.readInt( diskImage, 0 );
-
-		// check if disk image's magic bytes can be found
-		if ( diskImageMagic == DiskImageQcow2.QCOW2_MAGIC ) {
-			isQcow2ImageFormat = true;
-		} else {
-			isQcow2ImageFormat = false;
-		}
-
-		return isQcow2ImageFormat;
-	}
-
-	@Override
-	public boolean isStandalone() throws DiskImageException
-	{
-		final RandomAccessFile diskFile = this.getDiskImage();
-		final long qcowBackingFileOffset = DiskImageUtils.readLong( diskFile, 8 );
-		final boolean qcowStandalone;
-
-		// check if QCOW2 image does not refer to any backing file
-		if ( qcowBackingFileOffset == 0 ) {
-			qcowStandalone = true;
-		} else {
-			qcowStandalone = false;
-		}
-
-		return qcowStandalone;
-	}
-
-	@Override
-	public boolean isCompressed() throws DiskImageException
-	{
-		final RandomAccessFile diskFile = this.getDiskImage();
-		final boolean qcowUseExtendedL2;
-		boolean qcowCompressed = false;
-
-		// check if QCOW2 image uses extended L2 tables
-		// extended L2 tables are only possible in QCOW2 version 3 header format
-		if ( this.getVersion().getMajor() >= Short.valueOf( "3" ) ) {
-			// read incompatible feature bits
-			final long qcowIncompatibleFeatures = DiskImageUtils.readLong( diskFile, 72 );
-
-			// support for extended L2 tables is enabled if bit 4 is set
-			qcowUseExtendedL2 = ( ( ( qcowIncompatibleFeatures & 0x000000000010 ) >>> 4 ) == 1 );
-		} else {
-			qcowUseExtendedL2 = false;
-		}
-
-		// get number of entries in L1 table
-		final int qcowL1TableSize = DiskImageUtils.readInt( diskFile, 36 );
-
-		// check if a valid L1 table is present
-		if ( qcowL1TableSize > 0 ) {
-			// QCOW2 image contains active L1 table with more than 0 entries: l1_size > 0
-			// search for first L2 table and its first entry to get compression bit
-
-			// get cluster bits to calculate the cluster size
-			final int qcowClusterBits = DiskImageUtils.readInt( diskFile, 20 );
-			final int qcowClusterSize = ( 1 << qcowClusterBits );
-
-			// entries of a L1 table have always the size of 8 byte (64 bit)
-			final int qcowL1TableEntrySize = 8;
-
-			// entries of a L2 table have either the size of 8 or 16 byte (64 or 128 bit)
-			final int qcowL2TableEntrySize = ( qcowUseExtendedL2 ) ? 16 : 8;
-
-			// calculate number of L2 table entries
-			final int qcowL2TableSize = qcowClusterSize / qcowL2TableEntrySize;
-
-			// get offset of L1 table
-			final long qcowL1TableOffset = DiskImageUtils.readLong( diskFile, 40 );
-
-			// check for each L2 table referenced from an L1 table its entries
-			// until a compressed cluster descriptor is found
-			for ( long i = 0; i < qcowL1TableSize; i++ ) {
-				// get offset of current L2 table from the current L1 table entry
-				final long qcowL1TableEntryOffset = qcowL1TableOffset + ( i * qcowL1TableEntrySize );
-				final long qcowL1TableEntry = DiskImageUtils.readLong( diskFile, qcowL1TableEntryOffset );
-
-				// extract offset (bits 9 - 55) from L1 table entry
-				final long qcowL2TableOffset = ( qcowL1TableEntry & 0x00fffffffffffe00L );
-
-				if ( qcowL2TableOffset == 0 ) {
-					// L2 table and all clusters described by this L2 table are unallocated
-					continue;
-				}
-
-				// get each L2 table entry and check if it is a compressed cluster descriptor
-				for ( long j = 0; j < qcowL2TableSize; j++ ) {
-					// get current L2 table entry
-					final long qcowL2TableEntryOffset = qcowL2TableOffset + ( j * qcowL2TableEntrySize );
-					final long qcowL2TableEntry = DiskImageUtils.readLong( diskFile, qcowL2TableEntryOffset );
-
-					// extract cluster type (standard or compressed) (bit 62)
-					boolean qcowClusterCompressed = ( ( ( qcowL2TableEntry & 0x4000000000000000L ) >>> 62 ) == 1 );
-
-					// check if QCOW2 disk image contains at least one compressed cluster descriptor
-					if ( qcowClusterCompressed ) {
-						qcowCompressed = true;
-						break;
-					}
-				}
-
-				// terminate if one compressed cluster descriptor is already found
-				if ( qcowCompressed ) {
-					break;
-				}
-			}
-		} else {
-			// QCOW2 image does not contain an active L1 table with any entry: l1_size = 0
-			qcowCompressed = false;
-		}
-
-		return qcowCompressed;
-	}
-
-	@Override
-	public boolean isSnapshot() throws DiskImageException
-	{
-		final RandomAccessFile diskFile = this.getDiskImage();
-		final int qcowNumSnapshots = DiskImageUtils.readInt( diskFile, 56 );
-		final boolean qcowSnapshot;
-
-		// check if QCOW2 image contains at least one snapshot
-		if ( qcowNumSnapshots == 0 ) {
-			qcowSnapshot = true;
-		} else {
-			qcowSnapshot = false;
-		}
-
-		return qcowSnapshot;
-	}
-
-	@Override
-	public Version getVersion() throws DiskImageException
-	{
-		final RandomAccessFile diskFile = this.getDiskImage();
-		final int qcowVersion = DiskImageUtils.readInt( diskFile, 4 );
-
-		// check QCOW2 file format version
-		if ( qcowVersion < 2 || qcowVersion > 3 ) {
-			// QCOW2 disk image does not contain a valid QCOW2 version
-			final String errorMsg = new String( "Invalid QCOW2 version in header found!" );
-			throw new DiskImageException( errorMsg );
-		}
-
-		return new Version( Integer.valueOf( qcowVersion ).shortValue() );
-	}
-
-	@Override
-	public String getDescription() throws DiskImageException
-	{
-		// QCOW2 disk image format does not support any disk description
-		return null;
-	}
-
-	@Override
-	public ImageFormat getFormat()
-	{
-		return ImageFormat.QCOW2;
-	}
-}