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Annotation of researchv9/sys/conf/src/config/config.5, revision 1.1

1.1     ! root        1: .TH CONFIG 5
        !             2: .SH NAME
        !             3: config \- system configuration template files
        !             4: .SH DESCRIPTION
        !             5: These files are used as input by
        !             6: .IR config (8).
        !             7: Except as noted,
        !             8: they are kept in
        !             9: .IR /usr/sys/conf .
        !            10: .PP
        !            11: .I Files
        !            12: names the source files
        !            13: that make up the kernel.
        !            14: Each line consists of a filename
        !            15: (relative to
        !            16: .IR /usr/sys )
        !            17: followed by some magic words.
        !            18: For example:
        !            19: .IP
        !            20: sys/acct.c     standard
        !            21: .PP
        !            22: is a file used by any version of the system;
        !            23: .IP
        !            24: dev/uba.c      standard device-driver
        !            25: .PP
        !            26: is also always used,
        !            27: and contains device register references
        !            28: (which may require special compilation hacks);
        !            29: .IP
        !            30: dev/ju.c       optional ju device-driver
        !            31: .PP
        !            32: is included only if the
        !            33: .I ju
        !            34: device is expected;
        !            35: .IP
        !            36: dev/ttyld.c    optional tty pseudo-device
        !            37: .PP
        !            38: is included only if the
        !            39: .I tty
        !            40: pseudo-device is requested.
        !            41: .PP
        !            42: .I Devices
        !            43: describes possible device drivers,
        !            44: file system handlers,
        !            45: and line disciplines;
        !            46: the information is used to generate
        !            47: handler dispatch tables.
        !            48: It consists of lines with the following blank-separated fields:
        !            49: .IP
        !            50: Type of handler:
        !            51: .I device
        !            52: for character devices,
        !            53: .I stream-device
        !            54: for character stream devices,
        !            55: .I block-device
        !            56: for block devices,
        !            57: .I file-system
        !            58: for file system handlers,
        !            59: .I line-discipline
        !            60: for line discipline handlers.
        !            61: If the type is preceded by the word `standard'
        !            62: .RI ( e.g.
        !            63: .IR "standard block-device" ),
        !            64: the handler is always included;
        !            65: otherwise,
        !            66: it is included only if requested.
        !            67: .IP
        !            68: Table index:
        !            69: major device number,
        !            70: filesystem type,
        !            71: or line discipline number.
        !            72: .IP
        !            73: Driver name.
        !            74: Used in
        !            75: .IR files 
        !            76: and
        !            77: .IR conf .
        !            78: .I Config
        !            79: writes a header file
        !            80: .I name.h
        !            81: for each device;
        !            82: if that device
        !            83: is configured,
        !            84: NAME
        !            85: is defined to be
        !            86: the number of devices
        !            87: of that type.
        !            88: .IP
        !            89: Entry point name.
        !            90: Used as a prefix for data structure
        !            91: and driver entry points.
        !            92: .IP
        !            93: Entry points.
        !            94: For block devices,
        !            95: some of
        !            96: .IR open ,
        !            97: .IR close ,
        !            98: .IR strategy ,
        !            99: .IR dump ,
        !           100: .IR B_TAPE
        !           101: (the last puts the flag
        !           102: .I B_TAPE
        !           103: in the
        !           104: .I d_flags
        !           105: entry in the block device switch);
        !           106: for character devices,
        !           107: .IR open ,
        !           108: .IR close ,
        !           109: .IR read ,
        !           110: .IR write ,
        !           111: .IR ioctl ,
        !           112: .IR reset .
        !           113: For stream devices
        !           114: and line disciplines,
        !           115: .I info
        !           116: should be specified.
        !           117: For file system handlers,
        !           118: .IR put ,
        !           119: .IR get ,
        !           120: .IR free ,
        !           121: .IR updat ,
        !           122: .IR read ,
        !           123: .IR write ,
        !           124: .IR trunc ,
        !           125: .IR stat ,
        !           126: .IR nami ,
        !           127: .IR mount ,
        !           128: .IR ioctl .
        !           129: .PP
        !           130: As a special case,
        !           131: lines beginning with
        !           132: .RB ` : '
        !           133: are copied intact to
        !           134: .IR conf.c .
        !           135: This can be used for hacks like
        !           136: .IP
        !           137: : int mem_no = 3;      /* major device number of memory special file */
        !           138: .PP
        !           139: Addenda to
        !           140: .I files
        !           141: and
        !           142: .I devices
        !           143: specific to a particular machine
        !           144: may be kept in
        !           145: .IR /usr/sys/ machine /files
        !           146: and
        !           147: .IR /usr/sys/ machine /devices .
        !           148: The addenda are treated as if appended to the
        !           149: general files.

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