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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <mach.h>
include <config.h>
include <fio.h>
include "ki.h"
# KB_ZSTT -- Get file status on a binary device. We are called only if the
# device does not reside on the local node.
procedure kb_zstt (device, chan, what, lvalue)
int device # device driver code
int chan # channel assigned device
int what # file parameter to be returned
long lvalue # receives the parameter value
int server, ks_maxbufsize
int ki_sendrcv()
include "kichan.com"
include "kinode.com"
include "kii.com"
data ks_maxbufsize /-1/
begin
server = k_node[chan]
p_arg[1] = k_oschan[chan]
p_arg[2] = what
if (ki_sendrcv (server, device, BF_STT) == ERR)
lvalue = ERR
else {
lvalue = p_arg[1]
# The maximum buffer (transfer) size for a device is determined
# by the the network interface or by the device, whichever is
# smaller.
if (what == FSTT_MAXBUFSIZE || what == FSTT_OPTBUFSIZE) {
if (ks_maxbufsize < 0)
call zsttks (n_kschan[server], FSTT_MAXBUFSIZE, ks_maxbufsize)
if (lvalue == 0)
lvalue = ks_maxbufsize
else if (ks_maxbufsize > 0)
lvalue = min (lvalue, ks_maxbufsize)
}
}
end
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