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Annotation of researchv10dc/dist/man/v4/man2/seek.2, revision 1.1

1.1     ! root        1: .th SEEK II 8/5/73
        !             2: .sh NAME
        !             3: seek \*- move read/write pointer
        !             4: .sh SYNOPSIS
        !             5: (seek = 19.)
        !             6: .br
        !             7: (file descriptor in r0)
        !             8: .ft B
        !             9: .br
        !            10: sys seek; offset; ptrname
        !            11: .s3
        !            12: seek(fildes, offset, ptrname)
        !            13: .ft R
        !            14: .sh DESCRIPTION
        !            15: The file
        !            16: descriptor refers to a file open for reading or writing.
        !            17: The read (resp. write) pointer for the file is set as follows:
        !            18: .s3
        !            19: .lp +6 3
        !            20: if
        !            21: .it ptrname
        !            22: is 0, the pointer is set to
        !            23: .it offset.
        !            24: .s3
        !            25: .lp +6 3
        !            26: if
        !            27: .it ptrname
        !            28: is 1, the pointer is set to its current location plus
        !            29: .it offset.
        !            30: .s3
        !            31: .lp +6 3
        !            32: if
        !            33: .it ptrname
        !            34: is 2, the pointer is set to the size of the
        !            35: file plus
        !            36: .it offset.
        !            37: .s3
        !            38: .lp +6 3
        !            39: if
        !            40: .it ptrname
        !            41: is 3, 4 or 5,
        !            42: the meaning is as above for
        !            43: 0, 1 and 2 except that
        !            44: the offset is
        !            45: multiplied by 512.
        !            46: .s3
        !            47: .i0
        !            48: If
        !            49: .it ptrname
        !            50: is 0 or 3,
        !            51: .it offset
        !            52: is unsigned,
        !            53: otherwise
        !            54: it is signed.
        !            55: .sh "SEE ALSO"
        !            56: open(II), creat(II)
        !            57: .sh DIAGNOSTICS
        !            58: The error bit
        !            59: (c-bit) is set for an undefined file descriptor.
        !            60: From C, a \*-1 return indicates an error.

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