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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <mach.h>
include <config.h>
include "ki.h"
# KT_ZSEK -- Seek on a text device. We are called only if the device does not
# reside on the local node.
procedure kt_zsek (device, chan, loffset, status)
int device # device driver code
int chan # channel assigned device
long loffset # znottx offset to seek to
int status # receives nchars written or ERR
pointer bd
int server
int ki_sendrcv()
include "kichan.com"
include "kii.com"
begin
call ki_flushtx (device, chan, status)
if (status == ERR)
return
# Discard any cached input text to force a buffer refill at the new
# offset.
bd = k_bufp[chan]
B_RP(bd) = B_ITOP(bd)
# Transmit the seek request to the server.
server = k_node[chan]
p_arg[1] = k_oschan[chan]
# The long integer seek offset is passed as an encoded char sequence
# rather than as an integer p_arg value to avoid possible loss of
# precision.
call ki_encode (loffset, p_sbuf, NCHARS_LONG)
p_sbuflen = NCHARS_LONG
if (ki_sendrcv (server, device, TX_SEK) == ERR)
status = ERR
else
status = p_arg[1]
end
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