Return to tp.5 CVS log

Up to [Research Unix] / researchv10dc / dist / man / v4 / man5

Annotation of researchv10dc/dist/man/v4/man5/tp.5, revision 1.1

1.1     ! root        1: .th TP V 9/10/73
        !             2: .sh NAME
        !             3: tp \*- DEC/mag tape formats
        !             4: .sh DESCRIPTION
        !             5: The
        !             6: command
        !             7: .it tp
        !             8: dumps and extracts files to and
        !             9: DECtape and magtape.
        !            10: The formats of these tapes are the same except
        !            11: that magtapes have larger directories.
        !            12: .s3
        !            13: Block zero contains a
        !            14: copy of a stand-alone bootstrap program.
        !            15: See boot procedures (VIII).
        !            16: .s3
        !            17: Blocks 1 through 24
        !            18: for DECtape (1 through 62 for magtape)
        !            19: contain a directory of the tape.
        !            20: There are 192 (resp. 496) entries in the directory;
        !            21: 8 entries per block;
        !            22: 64 bytes per entry.
        !            23: Each entry has the following format:
        !            24: .s3
        !            25: .lp +24 20
        !            26: path name      32 bytes
        !            27: .lp +24 20
        !            28: mode   2 bytes
        !            29: .lp +24 20
        !            30: uid    1 byte
        !            31: .lp +24 20
        !            32: gid    1 byte
        !            33: .lp +24 20
        !            34: unused 1 byte
        !            35: .lp +24 20
        !            36: size   3 bytes
        !            37: .lp +24 20
        !            38: time modified  4 bytes
        !            39: .lp +24 20
        !            40: tape address   2 bytes
        !            41: .lp +24 20
        !            42: unused 16 bytes
        !            43: .lp +24 20
        !            44: check sum      2 bytes
        !            45: .s3
        !            46: .i0
        !            47: The path name entry is the path name of the
        !            48: file when put on the tape.
        !            49: If the pathname starts with a zero word,
        !            50: the entry is empty.
        !            51: It is at most 32 bytes long and ends in a null byte.
        !            52: Mode, uid, gid, size and time modified
        !            53: are the same as described under i-nodes (file system (V)).
        !            54: The tape address is the tape block number of the start of
        !            55: the contents of the file.
        !            56: Every file
        !            57: starts on a block boundary.
        !            58: The file occupies (size+511)/512 blocks
        !            59: of continuous tape.
        !            60: The checksum entry has a value such that
        !            61: the sum of the 32 words of the directory entry is zero.
        !            62: .s3
        !            63: Blocks 25 (resp. 63) on are available for file storage.
        !            64: .s3
        !            65: A fake entry (see tp(I))
        !            66: has a size of zero.
        !            67: .sh "SEE ALSO"
        !            68: file system(V), tp(I)

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.