Guardian Programmer's Guide

Writing a Command-Interpreter Monitor ($CMON)
Guardian Programmer’s Guide — 421922-014
23 - 45
Sample $CMON Program
!------------------------------------------------------------
! Procedure to process a Logon^msg message. The logon is
! always accepted, except after the shutdown phase has begun.
! The logon message returned to the TACL process can be
! changed at run time.
!------------------------------------------------------------
PROC PROCESS^LOGON^MSG;
BEGIN
STRUCT MSG(*); !template for LOGON^MSG message
BEGIN
INT MSGCODE;
INT USERID;
INT CIPRI;
INT CIINFILE[0:11];
INT CIOUTFILE[0:11];
END;
INT .EXT LOGON^MSG(MSG) :=
$XADR(BUFFER); !structure pointer to I/O buffer
STRUCT .LOGON^REPLY; !structure for reply
BEGIN
INT REPLYCODE;
STRING REPLYTEXT[0:63];
END;
! Blank the logon reply buffer:
LOGON^REPLY.REPLYTEXT[0] ':=' " ";
LOGON^REPLY.REPLYTEXT[1] ':=' LOGON^REPLY[0] FOR 63;
! Extract the group ID of the requesting process:
REQUESTING^GROUPID := LOGON^MSG.USERID.<0:7>;
! If shutting the system down, accept only operator group
! requests:
IF REFUSE^ALL AND (REQUESTING^GROUPID <> 255) THEN
BEGIN
LOGON^REPLY.REPLYCODE := 1;
LOGON^REPLY.REPLYTEXT ':=' SHUTDOWN^TEXT FOR 64;
END
ELSE