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

1.1     ! root        1: .th CREAT II 8/5/73
        !             2: .sh NAME
        !             3: creat  \*-  create a new file
        !             4: .sh SYNOPSIS
        !             5: (creat = 8.)
        !             6: .br
        !             7: .ft B
        !             8: sys creat; name; mode
        !             9: .br
        !            10: (file descriptor in r0)
        !            11: .s3
        !            12: creat(name, mode)
        !            13: .br
        !            14: char *name;
        !            15: .ft R
        !            16: .sh DESCRIPTION
        !            17: .it Creat
        !            18: creates a new file or prepares to rewrite an existing
        !            19: file called 
        !            20: .it name,
        !            21: given as the address of a null-terminated string.
        !            22: If the file did not exist, it is given
        !            23: mode
        !            24: .it mode.
        !            25: See
        !            26: chmod(II) for the
        !            27: construction of the
        !            28: .it mode
        !            29: argument.
        !            30: .s3
        !            31: If the file did exist, its mode and owner remain unchanged
        !            32: but it is truncated to 0 length.
        !            33: .s3
        !            34: The file is also opened for writing, and its file descriptor
        !            35: is returned (in r0).
        !            36: .s3
        !            37: The
        !            38: .it mode
        !            39: given is arbitrary; it need not allow
        !            40: writing.
        !            41: This feature is used by programs which deal with temporary
        !            42: files of fixed names.
        !            43: The creation is done with
        !            44: a mode that forbids writing.
        !            45: Then if a second
        !            46: instance of the program attempts a
        !            47: .it creat,
        !            48: an error is
        !            49: returned and the program knows that the name is unusable
        !            50: for the moment.
        !            51: .sh "SEE ALSO"
        !            52: write(II), close(II), stat(II)
        !            53: .sh DIAGNOSTICS
        !            54: The error bit
        !            55: (c-bit) may be set if: a needed directory is not searchable;
        !            56: the file does not exist and the directory
        !            57: in which it is to be created is not writable; the file
        !            58: does exist and is unwritable;
        !            59: the file is a directory;
        !            60: there are already 10 files open.
        !            61: .s3
        !            62: From C, a \*-1 return indicates an error.

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