1 package org.jscsi.target.scsi.cdb;
2
3
4 import org.jscsi.target.scsi.lun.AddressMethod;
5
6
7 /**
8 * The SELECT REPORT field is a member of the {@link ReportLunsCDB} and specifies the types of logical unit addresses
9 * that shall be reported.
10 * <p>
11 * The field is two bits long.
12 *
13 * @author Andreas Ergenzinger
14 */
15 public enum SelectReport {
16
17 /**
18 * The list shall contain the logical units accessible to the I_T nexus with the following addressing methods (see
19 * SAM):
20 * <ol>
21 * <li>{@link AddressMethod#LOGICAL_UNIT_ADDRESSING_METHOD},</li>
22 * <li>{@link AddressMethod#PERIPHERAL_DEVICE_ADDRESSING_METHOD}, and</li>
23 * <li>{@link AddressMethod#FLAT_SPACE_ADDRESSING_METHOD}.</li>
24 * </ol>
25 * If there are no logical units, the LUN LIST LENGTH field shall be zero.
26 */
27 SELECTED_ADDRESSING_METHODS((byte) 0),
28 /**
29 * The list shall contain only well known logical units, if any. If there are no well known logical units, the LUN
30 * LIST LENGTH field shall be zero.
31 */
32 WELL_KNOWN_LUNS_ONLY((byte) 1),
33 /**
34 * The list shall contain all logical units accessible to the I_T nexus.
35 */
36 ALL((byte) 2);
37 // all other values are reserved
38
39 /**
40 * The serialized value of this {@link SelectReport} object.
41 */
42 private final byte value;
43
44 private SelectReport (final byte value) {
45 this.value = value;
46 }
47
48 /**
49 * Returns the serialized value of this {@link SelectReport} object.
50 *
51 * @return the serialized value of this {@link SelectReport} object
52 */
53 public byte getValue () {
54 return value;
55 }
56
57 /**
58 * Returns the {@link SelectReport} corresponding to the passed value.
59 *
60 * @param value the value of a SELECT REPORT field
61 * @return the {@link SelectReport} corresponding to the passed value or <code>null</code> if none exists
62 */
63 public final static SelectReport getValue (byte value) {
64 if (0 <= value && value <= 2) return values()[value];
65 return null;
66 }
67 }