Volume services functions

• NWGetDiskUtilization(3nw)

• NWGetExtendedVolumeInfo(3nw)

• NWGetObjDiskRestrictions(3nw)

• NWGetVolumeInfoWithHandle(3nw)

• NWGetVolumeInfoWithNumber(3nw)

• NWGetVolumeName(3nw)

• NWGetVolumeNumber(3nw)

• NWGetVolumeStats(3nw)

• NWRemoveObjectDiskRestrictions(3nw)

• NWScanVolDiskRestrictions2(3nw)

• NWSetObjectVolSpaceLimit(3nw)