package org.jscsi.target.scsi.cdb;
import org.jscsi.target.scsi.lun.AddressMethod;
/**
* The SELECT REPORT field is a member of the {@link ReportLunsCDB} and
* specifies the types of logical unit addresses that shall be reported.
* <p>
* The field is two bits long.
*
* @author Andreas Ergenzinger
*/
public enum SelectReport {
/**
* The list shall contain the logical units accessible to the I_T nexus with
* the following addressing methods (see SAM):
* <ol>
* <li>{@link AddressMethod#LOGICAL_UNIT_ADDRESSING_METHOD},</li>
* <li>{@link AddressMethod#PERIPHERAL_DEVICE_ADDRESSING_METHOD}, and</li>
* <li>{@link AddressMethod#FLAT_SPACE_ADDRESSING_METHOD}.</li>
* </ol>
* If there are no logical units, the LUN LIST LENGTH field shall be zero.
*/
SELECTED_ADDRESSING_METHODS((byte)0),
/**
* The list shall contain only well known logical units, if any. If there
* are no well known logical units, the LUN LIST LENGTH field shall be zero.
*/
WELL_KNOWN_LUNS_ONLY((byte)1),
/**
* The list shall contain all logical units accessible to the I_T nexus.
*/
ALL((byte)2);
// all other values are reserved
/**
* The serialized value of this {@link SelectReport} object.
*/
private final byte value;
private SelectReport(final byte value) {
this.value = value;
}
/**
* Returns the serialized value of this {@link SelectReport} object.
*
* @return the serialized value of this {@link SelectReport} object
*/
public byte getValue() {
return value;
}
/**
* Returns the {@link SelectReport} corresponding to the passed value.
*
* @param value
* the value of a SELECT REPORT field
* @return the {@link SelectReport} corresponding to the passed value or <code>null</code> if none exists
*/
public final static SelectReport getValue(byte value) {
if (0 <= value && value <= 2)
return values()[value];
return null;
}
}