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Annotation of researchv8dc/sys/conf/config_how, revision 1.1

1.1     ! root        1: config makes the following files for each system:
        !             2:        conf.c
        !             3:        ioconf.c
        !             4:        ubglue.s
        !             5:        makefile
        !             6:        zillions of header files
        !             7: 
        !             8: to build a system from scratch,
        !             9:        mkdir /usr/sys/sysname
        !            10:        cd /usr/sys/sysname
        !            11:        (create a machine description in `conf')
        !            12:        /etc/config
        !            13:        make
        !            14: 
        !            15: to change a configuration, edit `conf,' run /etc/config, and make.
        !            16: 
        !            17: to add a piece to the system:
        !            18: put the filename in conf/files, with appropriate annotations (device-driver,
        !            19: pseudo-device, optional, and all that).
        !            20: if it's a device driver, line discipline, or filesystem handler, add an
        !            21: entry to conf/devices as well.
        !            22: if you just want to test things, addenda to `files' and `devices' can be
        !            23: put in /usr/sys/sysname; they'll be treated as if appended to the ones in
        !            24: /usr/sys/conf.
        !            25: 
        !            26: the fields in devices are
        !            27:        [standard] typeofthing
        !            28:                typeofthing is (character) device, block-device, stream-device,
        !            29:                file-system, line-discipline.
        !            30:        major device number (or filesystem number, or line discipline number)
        !            31:        driver name.  the one you use in the conf file, and in conf/files.
        !            32:        driver routine prefix.  see below.
        !            33:        entry points:
        !            34:                for a block device, some of open close strategy B_TAPE
        !            35:                        (the last puts B_TAPE into d_flags in bdevsw)
        !            36:                for a character device, open close read write ioctl reset
        !            37:                for a stream device or a line discipline, info
        !            38:                for a filesystem, put get free updat read write trinc stat nami mount ioctl
        !            39: entry points are catenated with the prefix.  example:
        !            40: device 13              up      up      read write reset
        !            41: defines device up:
        !            42: major character device 13
        !            43: has entry points named upread upwrite upreset
        !            44: 
        !            45: default entry points are generally `nodev'.
        !            46: exceptions: open close default to `nulldev,' except for stream devices.
        !            47: reset defaults to nulldev always.
        !            48: info (obviously) defaults to NULL.

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