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Annotation of 43BSD/ingres/doc/files/proctab.nr, revision 1.1

1.1     ! root        1: .th PROCTAB FILES
        !             2: .sh NAME
        !             3: \&.../files/proctab7 \- \*(II runtime configuration information
        !             4: .sh DESCRIPTION
        !             5: The process table
        !             6: describes the runtime configuration
        !             7: of the \*(II system.
        !             8: Each line of the process table
        !             9: has a special meaning depending on the first
        !            10: character of the line.
        !            11: Blank lines
        !            12: and lines beginning with an asterisk
        !            13: are comments.
        !            14: All other lines have a sequence of fields
        !            15: separated by commas.
        !            16: Pipe descriptor fields
        !            17: are lower case letters
        !            18: or digits;
        !            19: if they are digits
        !            20: they are replaced by file descriptors
        !            21: from the \*(EE flag
        !            22: or the @ flag.
        !            23: .s3
        !            24: .bd D
        !            25: defines a macro.
        !            26: The first field is a single character
        !            27: macro name.
        !            28: The second field is the string to use as the value.
        !            29: Macros are expanded using ``$\fIx\fP''
        !            30: where
        !            31: .it x
        !            32: is the macro name.
        !            33: The macro ``P'' is predefined
        !            34: to be the pathname of the \*(II subtree.
        !            35: .s3
        !            36: .bd P
        !            37: introduces a process description.
        !            38: All lines up to an end of file
        !            39: or another P line
        !            40: describe a single process.
        !            41: The first field is the process number.
        !            42: The next field is the pathname of the binary
        !            43: to execute for this process.
        !            44: The third field is the name of the process
        !            45: to use for printing messages.
        !            46: The fourth field must be a single character
        !            47: lower case letter
        !            48: representing the input pipe that is normally read
        !            49: when nothing special is happening,
        !            50: or a vertical bar followed by a single digit,
        !            51: meaning to read from that file descriptor.
        !            52: The next field is a set of flags in octal
        !            53: regarding processing of this process;
        !            54: these are described below.
        !            55: The final field is a single letter
        !            56: telling what trace flag this process uses.
        !            57: .s3
        !            58: .bd L
        !            59: defines what modules are defined locally
        !            60: by this process.
        !            61: The first field is the module number
        !            62: used internally.
        !            63: The second field is a set of flags
        !            64: describing processing of this module:
        !            65: the only bit defined is the 0001 bit
        !            66: which allows this module to be executed
        !            67: directly by the user.
        !            68: The third field is the function number
        !            69: in the process which defines this module.
        !            70: The final field is the module number
        !            71: to be executed after this module completes;
        !            72: zero is nothing (return).
        !            73: .s3
        !            74: .bd R
        !            75: defines modules that are known to this process
        !            76: but which must be passed to another process
        !            77: for execution.
        !            78: The first field is the process number the modules
        !            79: will be found in.
        !            80: The second field is the pipe to write
        !            81: to get to that process.
        !            82: The third field is the pipe to read to get a response
        !            83: from that process.
        !            84: The fourth field is a set of flags:
        !            85: 0001 means to write the output pipe
        !            86: if you get a broadcast message,
        !            87: 0002 means that the process is physically adjacent
        !            88: on the read pipe,
        !            89: and 0004 means that the process is adjacent
        !            90: on the write pipe.
        !            91: The fifth and subsequent fields are the module numbers
        !            92: that are defined by this process.
        !            93: .s3
        !            94: The status bits for the
        !            95: .bd P
        !            96: line are as follows:
        !            97: .nf
        !            98: .s3
        !            99:        000010  close diagnostic output
        !           100:        000004  close standard input
        !           101:        000002  run in user's directory, not database
        !           102:        000001  run as the user, not as \*(II
        !           103: .s3
        !           104: .fi
        !           105: .s3
        !           106: The lowest numbered process
        !           107: becomes the parent
        !           108: of all the other processes.
        !           109: .s1
        !           110: .bd WARNING:
        !           111: Giving a user permission to specify his or her own process table
        !           112: will allow them to bypass all protection provided by \*(II.
        !           113: This facility should be provided for system debugging only!
        !           114: .sh "EXAMPLE"
        !           115: The following example
        !           116: will execute a three process system.
        !           117: .s3
        !           118: .nf
        !           119: .in +4
        !           120: DB:$P/bin
        !           121: DS:$P/source
        !           122: ****  Process 0 -- terminal monitor
        !           123: P0:$B/monitor:MONITOR:h:0003:M
        !           124: L0:0:0:0
        !           125: R1:0:a:h:0007:1
        !           126: *  Process 1 -- parser
        !           127: P1:$B/parser:PARSER:a:0014:P
        !           128: L3:1:0:0
        !           129: R0:0:h:a:0006:0
        !           130: R2:0:b:g:0007:5:6:7
        !           131: *  Process 2 -- data base utilities
        !           132: P2:$B/alldbu:DBU:b:0014:Z
        !           133: L5:0:6:0
        !           134: L6:0:0:0
        !           135: L7:0:1:0
        !           136: R0:0:g:b:0000
        !           137: R1:0:g:b:0006
        !           138: .fi
        !           139: .in -4

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