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Annotation of 42BSD/ingres/source/ctlmod/readmon.c, revision 1.1

1.1     ! root        1: # include      "ctlmod.h"
        !             2: # include      "pipes.h"
        !             3: # include      <sccs.h>
        !             4: 
        !             5: SCCSID(@(#)readmon.c   7.1     2/5/81)
        !             6: 
        !             7: /*
        !             8: **  READMON -- Read bytes from tty monitor
        !             9: **
        !            10: **     This routine is a cludge.  It will exist only in version
        !            11: **     6.3 with split monitor/parser.  The purpose is to get
        !            12: **     around the problem caused by the monitor not outputting
        !            13: **     text in one of the basic internal data types.  What it
        !            14: **     can do is to output no parameters & terminate with a
        !            15: **     PV_EOF.  This doesn't flush the pipe, so it can continue
        !            16: **     with plain text.  This routine retrieves that text.
        !            17: **     The name "readmon" is somewhat of a misnomer -- it is
        !            18: **     not restricted to the monitor, & does not necessarily
        !            19: **     read from the monitor; but this routine should only
        !            20: **     be called from the parser on the monitor pipe.
        !            21: **
        !            22: **     Parameters:
        !            23: **             buf -- a buffer to read into.
        !            24: **             nbytes -- the max number of bytes to read.
        !            25: **
        !            26: **     Returns:
        !            27: **             The actual number of bytes read.
        !            28: **             zero on eof.
        !            29: **
        !            30: **     Side Effects:
        !            31: **             none.
        !            32: **
        !            33: **     NOTE:
        !            34: **             When this routine is eliminated, so should the
        !            35: **             'cm_monppb' field of the Cm struct and the code
        !            36: **             in proc_err to flush the monitor input pipe.
        !            37: **
        !            38: **     Trace Flags:
        !            39: **             none.
        !            40: */
        !            41: 
        !            42: pb_t   *MonPpb;        /* pointer to ppb for monitor */
        !            43: 
        !            44: readmon(buf, nbytes)
        !            45: char   *buf;
        !            46: int    nbytes;
        !            47: {
        !            48:        Cm.cm_input = Cm.cm_rinput;
        !            49:        return (pb_get(MonPpb, buf, nbytes));
        !            50: }

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