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Annotation of 43BSDTahoe/new/xns/courierlib/Filing4.cr, revision 1.1

1.1     ! root        1: -- $Header: Filing4.cr,v 2.6 87/03/23 13:05:51 ed Exp $
        !             2: 
        !             3: -- Note:  this is a TEST version of Filing, and is not guaranteed to
        !             4: -- match the official Xerox version at all.  It does seem to be adequate
        !             5: -- for FTP, however.
        !             6: 
        !             7: -- $Log:       Filing4.cr,v $
        !             8: -- Revision 2.6  87/03/23  13:05:51  ed
        !             9: -- Minor typo in SerializedTree.
        !            10: -- 
        !            11: -- Revision 2.5  87/03/23  11:19:35  ed
        !            12: -- Slight mod to SerializedTree to allow current implementation.
        !            13: -- Depth is really ScopeType of 4 in Filing4 (reverts to 3 in Filing5).
        !            14: -- 
        !            15: -- Revision 2.4  87/01/14  13:02:00  ed
        !            16: -- Remove controls from Move
        !            17: --
        !            18: -- Revision 2.3  86/12/31  11:45:30  ed
        !            19: -- Added RandomAccess and Serialize/Deserialize for completeness
        !            20: -- Some REPORTS error typos fixed
        !            21: --
        !            22: -- Revision 2.2  86/06/30  11:31:13  jqj
        !            23: -- convert to Authentication v 2 for compatibility with spec., now that
        !            24: -- compiler allows it.
        !            25: -- 
        !            26: -- Revision 2.1  86/06/02  07:08:22  jqj
        !            27: -- typos
        !            28: -- 
        !            29: -- Revision 2.0  85/11/21  07:22:38  jqj
        !            30: -- 4.3BSD standard release
        !            31: -- 
        !            32: -- Revision 1.1  85/05/27  06:30:46  jqj
        !            33: -- Initial revision
        !            34: -- 
        !            35: -- Revision 1.1  85/05/27  06:30:46  jqj
        !            36: -- Initial revision
        !            37: -- 
        !            38: 
        !            39: Filing: PROGRAM 10 VERSION 4 =
        !            40: BEGIN
        !            41:        DEPENDS UPON
        !            42:                BulkData(0) VERSION 1,
        !            43:                Clearinghouse(2) VERSION 2,
        !            44:                Authentication(14) VERSION 2,
        !            45:                Time(15) VERSION 2;
        !            46: 
        !            47: 
        !            48: 
        !            49: 
        !            50: -- TYPES AND CONSTANTS --
        !            51: 
        !            52: -- Attributes (individual attributes defined later) --
        !            53: 
        !            54: AttributeType: TYPE = LONG CARDINAL;
        !            55: AttributeTypeSequence: TYPE = SEQUENCE OF AttributeType;
        !            56: allAttributeTypes: AttributeTypeSequence = [37777777777B];
        !            57: Attribute: TYPE = RECORD [type: AttributeType, value: SEQUENCE OF UNSPECIFIED];
        !            58: AttributeSequence: TYPE = SEQUENCE OF Attribute;
        !            59: 
        !            60: -- Controls --
        !            61: 
        !            62: ControlType: TYPE = {lockControl(0), timeoutControl(1), accessControl(2)};
        !            63: ControlTypeSequence: TYPE = SEQUENCE 3 OF ControlType;
        !            64: 
        !            65: Lock: TYPE = {lockNone(0), share(1), exclusive(2)};
        !            66: 
        !            67: Timeout: TYPE = CARDINAL;      -- in seconds --
        !            68: defaultTimeout: Timeout = 177777B;     -- actual value impl.-dependent --
        !            69: 
        !            70: AccessType: TYPE = {
        !            71:        readAccess(0), writeAccess(1), ownerAccess(2),  -- all files --
        !            72:        addAccess(3), removeAccess(4) };                -- directories only --
        !            73: AccessSequence: TYPE = SEQUENCE 5 OF AccessType;
        !            74: -- fullAccess: AccessSequence = [177777B]; --
        !            75: 
        !            76: Control: TYPE = CHOICE ControlType OF {
        !            77:        lockControl => Lock,
        !            78:        timeoutControl => Timeout,
        !            79:        accessControl => AccessSequence};
        !            80: ControlSequence: TYPE = SEQUENCE 3 OF Control;
        !            81: 
        !            82: -- Scopes --
        !            83: 
        !            84: Count: TYPE = CARDINAL;
        !            85: unlimitedCount: Count = 177777B;
        !            86: 
        !            87: Depth: TYPE = CARDINAL;
        !            88: allDescendants: Depth = 177777B;
        !            89: 
        !            90: Direction: TYPE = {forward(0), backward(1)};
        !            91: 
        !            92: Interpretation: TYPE = { interpretationNone(0), boolean(1), cardinal(2),
        !            93:        longCardinal(3), time(4), integer(5), longInteger(6), string(7) };
        !            94: FilterType: TYPE = {
        !            95:        -- relations --
        !            96:        less(0), lessOrEqual(1), equal(2), notEqual(3), greaterOrEqual(4),
        !            97:        greater(5), 
        !            98:        -- logical --
        !            99:        and(6), or(7), not(8),
        !           100:        -- constants --
        !           101:        filterNone(9), all(10),
        !           102:        -- patterns --
        !           103:        matches(11) };
        !           104: RestrictedFilter: TYPE = CHOICE FilterType OF {
        !           105:        less, lessOrEqual, equal, notEqual, greaterOrEqual, greater =>
        !           106:                RECORD [attribute: Attribute, interpretation: Interpretation],
        !           107:                -- interpretation ignored if attribute interpreted by
        !           108:                -- implementor
        !           109:        -- NOT IMPLEMENTED: and, or, not --
        !           110:        filterNone, all => RECORD [],
        !           111:        matches => RECORD [attribute: Attribute] };
        !           112: Filter: TYPE = CHOICE FilterType OF {
        !           113:        less, lessOrEqual, equal, notEqual, greaterOrEqual, greater =>
        !           114:                RECORD [attribute: Attribute, interpretation: Interpretation],
        !           115:                -- interpretation ignored if attribute interpreted by
        !           116:                -- implementor
        !           117:        -- NOT YET IMPLEMENTED: (at least, not generally) and, or, not --
        !           118:        and, or => SEQUENCE OF RestrictedFilter,
        !           119:        not => RestrictedFilter,
        !           120:        filterNone, all => RECORD [],
        !           121:        matches => RECORD [attribute: Attribute] };
        !           122: nullFilter: Filter = all[];
        !           123:        
        !           124: ScopeType: TYPE = { count(0), direction(1), filter(2), depth(4) };
        !           125: Scope: TYPE = CHOICE ScopeType OF {
        !           126:        count => Count,
        !           127:        depth => Depth,
        !           128:        direction => Direction,
        !           129:        filter => Filter };
        !           130: ScopeSequence: TYPE = SEQUENCE 4 OF Scope;
        !           131: 
        !           132: -- Handles and Authentication --
        !           133: 
        !           134: Credentials: TYPE = Authentication.Credentials;
        !           135: Verifier: TYPE = Authentication.Verifier;
        !           136: SimpleVerifier: TYPE = Authentication.SimpleVerifier;
        !           137: 
        !           138: Handle: TYPE = ARRAY 2 OF UNSPECIFIED;
        !           139: nullHandle: Handle = [0,0];
        !           140: 
        !           141: Session: TYPE = RECORD [token: ARRAY 2 OF UNSPECIFIED, verifier: Verifier ];
        !           142: 
        !           143: 
        !           144: -- Random Access --
        !           145: 
        !           146: ByteAddress: TYPE = LONG CARDINAL;
        !           147: ByteCount: TYPE = LONG CARDINAL;
        !           148: endOfFile: LONG CARDINAL = 3777777777B; -- logical end of file --
        !           149: 
        !           150: ByteRange: TYPE = RECORD [ firstByte: ByteAddress, count: ByteCount ];
        !           151: 
        !           152: 
        !           153: -- REMOTE ERRORS --
        !           154: 
        !           155: ArgumentProblem: TYPE = {
        !           156:        illegal(0),
        !           157:        disallowed(1),
        !           158:        unreasonable(2),
        !           159:        unimplemented(3),
        !           160:        duplicated(4),
        !           161:        missing(5) };
        !           162: 
        !           163: -- problem with an attribute type or value --
        !           164: AttributeTypeError: ERROR [ problem: ArgumentProblem, type: AttributeType]
        !           165:        = 0;
        !           166: AttributeValueError: ERROR [ problem: ArgumentProblem, type: AttributeType]
        !           167:        = 1;
        !           168: 
        !           169: -- problem with an control type or value --
        !           170: ControlTypeError: ERROR [ problem: ArgumentProblem, type: ControlType]
        !           171:        = 2;
        !           172: ControlValueError: ERROR [ problem: ArgumentProblem, type: ControlType]
        !           173:        = 3;
        !           174: 
        !           175: -- problem with an scope type or value --
        !           176: ScopeTypeError: ERROR [ problem: ArgumentProblem, type: ScopeType]
        !           177:        = 4;
        !           178: ScopeValueError: ERROR [ problem: ArgumentProblem, type: ScopeType]
        !           179:        = 5;
        !           180: 
        !           181: -- problem in obtaining access to a file --
        !           182: AccessProblem: TYPE = {
        !           183:        accessRightsInsufficient(0),
        !           184:        accessRightsIndeterminate(1),
        !           185:        fileChanged(2),
        !           186:        fileDamaged(3),
        !           187:        fileInUse(4),
        !           188:        fileNotFound(5),
        !           189:        fileOpen(6) };
        !           190: AccessError: ERROR [problem: AccessProblem] = 6;
        !           191: 
        !           192: -- problem with a credentials or verifier --
        !           193: AuthenticationError: ERROR [problem: Authentication.Problem] = 7;
        !           194: 
        !           195: -- problem with a BDT --
        !           196: ConnectionProblem: TYPE = {
        !           197:                -- communication problems --
        !           198:        noRoute(0),
        !           199:        noResponse(1),
        !           200:        transmissionHardware(2),
        !           201:        transportTimeout(3),
        !           202:                -- resource problems --
        !           203:        tooManyLocalConnections(4),
        !           204:        tooManyRemoteConnections(5),
        !           205:                -- remote program implementation problems --
        !           206:        missingCourier(6),
        !           207:        missingProgram(7),
        !           208:        missingProcedure(8),
        !           209:        protocolMismatch(9),
        !           210:        parameterInconsistency(10),
        !           211:        invalidMessage(11),
        !           212:        returnTimedOut(12),
        !           213:                -- miscellaneous --
        !           214:        otherCallProblem(177777B) };
        !           215: ConnectionError: ERROR [problem: ConnectionProblem] = 8;
        !           216: 
        !           217: -- problem with file handle --
        !           218: HandleProblem: TYPE = {
        !           219:        invalid(0),
        !           220:        nullDisallowed(1),
        !           221:        directoryRequired(2) };
        !           222: HandleError: ERROR [problem: HandleProblem] = 9;
        !           223: 
        !           224: -- problem during insertion in directory or changing attributes --
        !           225: InsertionProblem: TYPE = {
        !           226:        positionUnavailable(0),
        !           227:        fileNotUnique(1),
        !           228:        loopInHierarchy(2) };
        !           229: InsertionError: ERROR [problem: InsertionProblem] = 10;
        !           230: 
        !           231: -- problem during random access operation --
        !           232: RangeError: ERROR [problem: ArgumentProblem] = 16;
        !           233: 
        !           234: -- problem during logon or logoff --
        !           235: ServiceProblem: TYPE = {
        !           236:        cannotAuthenticate(0),
        !           237:        serviceFull(1),
        !           238:        serviceUnavailable(2),
        !           239:        sessionInUse(3) };
        !           240: ServiceError: ERROR [problem: ServiceProblem] = 11;
        !           241: 
        !           242: -- problem with a session --
        !           243: SessionProblem: TYPE = {
        !           244:        tokenInvalid(0),
        !           245:        serviceAlreadySet(1) };
        !           246: SessionError: ERROR [problem: SessionProblem ] = 12;
        !           247: 
        !           248: -- problem obtaining space for file contents or attributes --
        !           249: SpaceProblem: TYPE = {
        !           250:        allocationExceeded(0),
        !           251:        attributeAreaFull(1),
        !           252:        mediumFull(2) };
        !           253: SpaceError: ERROR [problem: SpaceProblem ] = 13;
        !           254: 
        !           255: -- problem during BDT --
        !           256: TransferProblem: TYPE = {
        !           257:        aborted(0),
        !           258:        checksumIncorrect(1),
        !           259:        formatIncorrect(2),
        !           260:        noRendezvous(3),
        !           261:        wrongDirection(4) };
        !           262: TransferError: ERROR [problem: TransferProblem ] = 14;
        !           263: 
        !           264: -- some undefined (and implementation-dependent) problem occurred --
        !           265: UndefinedProblem: TYPE = CARDINAL;
        !           266: UndefinedError: ERROR [problem: UndefinedProblem ] = 15;
        !           267: 
        !           268: 
        !           269: 
        !           270: 
        !           271: -- REMOTE PROCEDURES --
        !           272: 
        !           273: -- Logging On and Off --
        !           274: 
        !           275: Logon: PROCEDURE [
        !           276:        service: Clearinghouse.Name, credentials: Credentials,
        !           277:        verifier: Verifier ] 
        !           278:        RETURNS [ session: Session ]
        !           279:        REPORTS [ AuthenticationError, ServiceError, SessionError,
        !           280:                UndefinedError ]
        !           281:        = 0;
        !           282: 
        !           283: Logoff: PROCEDURE [ session: Session ]
        !           284:        REPORTS [ AuthenticationError, ServiceError, SessionError,
        !           285:                UndefinedError ]
        !           286:        = 1;
        !           287: 
        !           288: Continue: PROCEDURE [ session: Session ]
        !           289:        RETURNS [ continuance: CARDINAL ]
        !           290:        REPORTS [ AuthenticationError, SessionError, UndefinedError ]
        !           291:        = 19;
        !           292: 
        !           293: -- Opening and Closing Files --
        !           294: 
        !           295: Open: PROCEDURE [ attributes: AttributeSequence, directory: Handle,
        !           296:                controls: ControlSequence, session: Session ]
        !           297:        RETURNS [ file: Handle ]
        !           298:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           299:                AuthenticationError, ControlTypeError, ControlValueError,
        !           300:                HandleError, SessionError, UndefinedError ]
        !           301:        = 2;
        !           302: 
        !           303: Close: PROCEDURE [ file: Handle, session: Session ]
        !           304:        REPORTS [ AuthenticationError, HandleError, SessionError,
        !           305:                UndefinedError ] 
        !           306:        = 3;
        !           307: 
        !           308: -- Creating and Deleting Files --
        !           309: 
        !           310: Create: PROCEDURE [ directory: Handle, attributes: AttributeSequence,
        !           311:                controls: ControlSequence, session: Session ]
        !           312:        RETURNS [ file: Handle ]
        !           313:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           314:                AuthenticationError, ControlTypeError, ControlValueError,
        !           315:                HandleError, InsertionError, SessionError, SpaceError,
        !           316:                UndefinedError ]
        !           317:        = 4;
        !           318: 
        !           319: Delete: PROCEDURE [ file: Handle, session: Session ]
        !           320:        REPORTS [ AccessError, AuthenticationError, HandleError, SessionError,
        !           321:                UndefinedError ]
        !           322:        = 5;
        !           323: 
        !           324: -- Getting and Changing Controls (transient) --
        !           325: 
        !           326: GetControls: PROCEDURE [ file: Handle, types: ControlTypeSequence,
        !           327:                session: Session ]
        !           328:        RETURNS [ controls: ControlSequence ]
        !           329:        REPORTS [ AccessError, AuthenticationError, ControlTypeError,
        !           330:                HandleError, SessionError, UndefinedError ]
        !           331:        = 6;
        !           332: 
        !           333: ChangeControls: PROCEDURE [ file: Handle, controls: ControlSequence,
        !           334:                session: Session ]
        !           335:        REPORTS [ AccessError, AuthenticationError,
        !           336:                ControlTypeError, ControlValueError,
        !           337:                HandleError, SessionError, UndefinedError ]
        !           338:        = 7;
        !           339: 
        !           340: 
        !           341: -- Getting and Changing Attributes (permanent) --
        !           342: 
        !           343: GetAttributes: PROCEDURE [ file: Handle, types: AttributeTypeSequence,
        !           344:                session: Session ]
        !           345:        RETURNS [ attributes: AttributeSequence ]
        !           346:        REPORTS [ AccessError, AttributeTypeError, AuthenticationError,
        !           347:                HandleError, SessionError, UndefinedError ]
        !           348:        = 8;
        !           349: 
        !           350: ChangeAttributes: PROCEDURE [file: Handle, attributes: AttributeSequence,
        !           351:                session: Session ]
        !           352:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           353:                AuthenticationError, HandleError, InsertionError,
        !           354:                SessionError, SpaceError, UndefinedError ]
        !           355:        = 9;
        !           356: 
        !           357: UnifyAccessLists: PROCEDURE [directory: Handle, session: Session ]
        !           358:        REPORTS [ AccessError, AuthenticationError, HandleError, SessionError,
        !           359:                UndefinedError ] 
        !           360:        = 20;
        !           361: 
        !           362: -- Copying and Moving Files --
        !           363: 
        !           364: Copy: PROCEDURE [ file, destinationDirectory: Handle ,
        !           365:                attributes: AttributeSequence, controls: ControlSequence,
        !           366:                session: Session ]
        !           367:        RETURNS [ newFile: Handle ]
        !           368:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           369:                AuthenticationError, ControlTypeError, ControlValueError,
        !           370:                HandleError, InsertionError, SessionError, SpaceError,
        !           371:                UndefinedError ] 
        !           372:        = 10;
        !           373: 
        !           374: Move: PROCEDURE [ file, destinationDirectory: Handle ,
        !           375:                attributes: AttributeSequence, session: Session ]
        !           376:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           377:                AuthenticationError, HandleError, InsertionError,
        !           378:                SessionError, SpaceError, UndefinedError ] 
        !           379:        = 11;
        !           380: 
        !           381: -- Transfering Bulk Data (File Content) --
        !           382: 
        !           383: Store: PROCEDURE [ directory: Handle, attributes: AttributeSequence,
        !           384:                controls: ControlSequence, content: BulkData.Source,
        !           385:                session: Session ]
        !           386:        RETURNS [ file: Handle ]
        !           387:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           388:                AuthenticationError, ConnectionError, ControlTypeError,
        !           389:                ControlValueError, HandleError, InsertionError, SessionError,
        !           390:                SpaceError, TransferError, UndefinedError ]
        !           391:        = 12;
        !           392: 
        !           393: Retrieve: PROCEDURE [ file: Handle, content: BulkData.Sink, session: Session ]
        !           394:        REPORTS [ AccessError, AuthenticationError, ConnectionError,
        !           395:                HandleError, SessionError, TransferError,
        !           396:                UndefinedError ]
        !           397:        = 13;
        !           398: 
        !           399: Replace: PROCEDURE [ file: Handle,  attributes: AttributeSequence,
        !           400:                content: BulkData.Source, session: Session ]
        !           401:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           402:                AuthenticationError, ConnectionError, HandleError,
        !           403:                SessionError, SpaceError, TransferError, UndefinedError ]
        !           404:        = 14;
        !           405: 
        !           406: -- Transferring Bulk Data (Serialized Files) --
        !           407: 
        !           408: Serialize: PROCEDURE [ file: Handle, serializedFile: BulkData.Sink,
        !           409:                session: Session ]
        !           410:        REPORTS [ AccessError, AuthenticationError, ConnectionError,
        !           411:                HandleError, SessionError, TransferError, UndefinedError ]
        !           412:        = 15;
        !           413: 
        !           414: Deserialize: PROCEDURE [ directory: Handle, attributes: AttributeSequence,
        !           415:                controls: ControlSequence, serializedFile: BulkData.Source,
        !           416:                session: Session ]
        !           417:        RETURNS [ file: Handle ]
        !           418:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           419:                AuthenticationError, ConnectionError, ControlTypeError,
        !           420:                ControlValueError, HandleError, InsertionError,
        !           421:                SessionError, SpaceError, TransferError, UndefinedError ]
        !           422:        = 16;
        !           423: 
        !           424: -- Random Access to File Data --
        !           425: 
        !           426: RetrieveBytes: PROCEDURE [ file: Handle, range: ByteRange,
        !           427:                sink: BulkData.Sink, session: Session ]
        !           428:        REPORTS [ AccessError, HandleError, RangeError, SessionError,
        !           429:                UndefinedError ]
        !           430:        = 22;
        !           431: 
        !           432: ReplaceBytes: PROCEDURE [ file: Handle, range: ByteRange,
        !           433:                source: BulkData.Source, session: Session ]
        !           434:        REPORTS [ AccessError, HandleError, RangeError, SessionError,
        !           435:                SpaceError, UndefinedError ]
        !           436:        = 23;
        !           437: 
        !           438: -- Locating and Listing Files in a Directory --
        !           439: 
        !           440: Find: PROCEDURE [ directory: Handle, scope: ScopeSequence,
        !           441:                controls: ControlSequence, session: Session ]
        !           442:        RETURNS [ file: Handle ]
        !           443:        REPORTS [ AccessError, AuthenticationError,
        !           444:                ControlTypeError, ControlValueError, HandleError,
        !           445:                ScopeTypeError, ScopeValueError,
        !           446:                SessionError, UndefinedError ]
        !           447:        = 17;
        !           448: 
        !           449: List: PROCEDURE [ directory: Handle, types: AttributeTypeSequence,
        !           450:                scope: ScopeSequence, listing: BulkData.Sink,
        !           451:                session: Session ]
        !           452:        REPORTS [ AccessError, AttributeTypeError,
        !           453:                AuthenticationError, ConnectionError,
        !           454:                HandleError,
        !           455:                ScopeTypeError, ScopeValueError,
        !           456:                SessionError, TransferError, UndefinedError ]
        !           457:        = 18;
        !           458: 
        !           459: 
        !           460: 
        !           461: 
        !           462: 
        !           463: -- INTERPRETED ATTRIBUTE DEFINITIONS --
        !           464: 
        !           465: -- common definitions --
        !           466: 
        !           467: Time: TYPE = Time.Time;                -- seconds --
        !           468: nullTime: Time = Time.earliestTime;
        !           469: 
        !           470: User: TYPE = Clearinghouse.Name;
        !           471: 
        !           472: -- attributes --
        !           473: 
        !           474: accessList: AttributeType = 19;
        !           475: AccessEntry: TYPE = RECORD [key: Clearinghouse.Name, access: AccessSequence ];
        !           476: AccessList: TYPE = RECORD [entries: SEQUENCE OF AccessEntry, defaulted: BOOLEAN];
        !           477: 
        !           478: checksum: AttributeType = 0;
        !           479: Checksum: TYPE = CARDINAL;
        !           480: unknownChecksum: Checksum = 177777B;
        !           481: 
        !           482: childrenUniquelyNamed: AttributeType = 1;
        !           483: ChildrenUniquelyNamed: TYPE = BOOLEAN;
        !           484: 
        !           485: createdBy: AttributeType = 2;
        !           486: CreatedBy: TYPE = User;
        !           487: 
        !           488: createdOn: AttributeType = 3;
        !           489: CreatedOn: TYPE = Time;
        !           490: 
        !           491: dataSize: AttributeType = 16;
        !           492: DataSize: TYPE = LONG CARDINAL;
        !           493: 
        !           494: defaultAccessList: AttributeType = 20;
        !           495: DefaultAccessList: TYPE = AccessList;
        !           496: 
        !           497: fileID: AttributeType = 4;
        !           498: FileID: TYPE = ARRAY 5 OF UNSPECIFIED;
        !           499: nullFileID: FileID = [0,0,0,0,0];
        !           500: 
        !           501: isDirectory: AttributeType = 5;
        !           502: IsDirectory: TYPE = BOOLEAN;
        !           503: 
        !           504: isTemporary: AttributeType = 6;
        !           505: IsTemporary: TYPE = BOOLEAN;
        !           506: 
        !           507: modifiedBy: AttributeType = 7;
        !           508: ModifiedBy: TYPE = User;
        !           509: 
        !           510: modifiedOn: AttributeType = 8;
        !           511: ModifiedOn: TYPE = Time;
        !           512: 
        !           513: name: AttributeType = 9;       -- name relative to parent --
        !           514: Name: TYPE = STRING;   -- must not exceed 100 bytes --
        !           515: 
        !           516: numberOfChildren: AttributeType = 10;
        !           517: NumberOfChildren: TYPE = CARDINAL;
        !           518: 
        !           519: ordering: AttributeType = 11;
        !           520: Ordering: TYPE = RECORD [key: AttributeType, ascending: BOOLEAN,
        !           521:                interpretation: Interpretation];
        !           522: -- see below for defaultOrdering, byAscendingPosition, byDescendingPosition --
        !           523: 
        !           524: parentID: AttributeType = 12;
        !           525: ParentID: TYPE = FileID;
        !           526: 
        !           527: pathname: AttributeType = 21;
        !           528: Pathname: TYPE = STRING;
        !           529: 
        !           530: position: AttributeType = 11;
        !           531: Position: TYPE = SEQUENCE 100 OF UNSPECIFIED;
        !           532: firstPosition: Position = [0];
        !           533: lastPosition: Position = [177777B];
        !           534: 
        !           535: readBy: AttributeType = 14;
        !           536: ReadBy: TYPE = User;
        !           537: 
        !           538: readOn: AttributeType = 15;
        !           539: ReadOn: TYPE = Time;
        !           540: 
        !           541: storedSize: AttributeType = 26;
        !           542: StoredSize: TYPE = LONG CARDINAL;
        !           543: 
        !           544: subtreeSize: AttributeType = 27;
        !           545: SubtreeSize: TYPE = LONG CARDINAL;
        !           546: 
        !           547: subtreeSizeLimit: AttributeType = 28;
        !           548: SubtreeSizeLimit: TYPE = LONG CARDINAL;
        !           549: nullSubtreeSizeLimit: SubtreeSizeLimit = 37777777777B;
        !           550: 
        !           551: type: AttributeType = 17;
        !           552: Type: TYPE = LONG CARDINAL;
        !           553: 
        !           554: version: AttributeType = 18;
        !           555: Version: TYPE = CARDINAL;
        !           556: lowestVersion: Version = 0;
        !           557: highestVersion: Version = 177777B;
        !           558: 
        !           559: defaultOrdering: Ordering = [key: name, ascending: TRUE, interpretation:
        !           560:                string];
        !           561: byAscendingPosition: Ordering = [key: position, ascending: TRUE,
        !           562:                interpretation: interpretationNone];
        !           563: byDescendingPosition: Ordering = [key: position, ascending: FALSE,
        !           564:                interpretation: interpretationNone];
        !           565: 
        !           566: 
        !           567: 
        !           568: 
        !           569: -- BULK DATA FORMATS --
        !           570: 
        !           571: -- Serialized File Format, used in Serialize and Deserialize --
        !           572: 
        !           573: -- SerializedTree should contain following but compiler won't allow it
        !           574: -- Use Sequence of Unspecified  to get around it for now.
        !           575: -- 
        !           576: -- SerializedTree: TYPE = RECORD [
        !           577: --     attributes: AttributeSequence,
        !           578: --     content: RECORD [ data: BulkData.StreamOfUnspecified ,
        !           579: --                     lastByteIsSignificant: BOOLEAN ],
        !           580: --     children: SEQUENCE OF SerializedTree ];
        !           581: 
        !           582: SerializedTree: TYPE = RECORD [
        !           583:        attributes: AttributeSequence,
        !           584:        content: RECORD [ data: BulkData.StreamOfUnspecified ,
        !           585:                        lastByteIsSignificant: BOOLEAN ],
        !           586:        children: SEQUENCE OF UNSPECIFIED ];
        !           587: 
        !           588: SerializedFile: TYPE = RECORD [ version: LONG CARDINAL, file: SerializedTree ];
        !           589: currentVersion: LONG CARDINAL = 3;
        !           590: 
        !           591: 
        !           592: 
        !           593: -- Attribute Series Format, used in List --
        !           594: 
        !           595: StreamOfAttributeSequence: TYPE = CHOICE OF {
        !           596:        nextSegment(0) => RECORD [
        !           597:                segment: SEQUENCE OF AttributeSequence,
        !           598:                restOfStream: StreamOfAttributeSequence],
        !           599:        lastSegment(1) => SEQUENCE OF AttributeSequence};
        !           600: 
        !           601: 
        !           602: 
        !           603: 
        !           604: 
        !           605: -- FILE TYPES --
        !           606: 
        !           607: tUnspecified: Type = 0;
        !           608: tDirectory: Type = 1;
        !           609: tText: Type = 2;
        !           610: tSerialized: Type = 3;
        !           611: tEmpty: Type = 4;
        !           612: 
        !           613: END. -- of Filing --
        !           614: 

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