/*
* Before reading (deserializing from the stream, one should always call
* this procedure to guarantee proper record alignment.
*/
bool_t
xdrrec_skiprecord(XDR *xdrs)
{
RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
enum xprt_stat xstat;
if (rstrm->nonblock) {
if (__xdrrec_getrec(xdrs, &xstat, FALSE)) {
rstrm->fbtbc = 0;
return TRUE;
}
if (rstrm->in_finger == rstrm->in_boundry &&
xstat == XPRT_MOREREQS) {
rstrm->fbtbc = 0;
return TRUE;
}
return FALSE;
}
while (rstrm->fbtbc > 0 || (! rstrm->last_frag)) {
if (! skip_input_bytes(rstrm, rstrm->fbtbc))
return (FALSE);
rstrm->fbtbc = 0;
if ((! rstrm->last_frag) && (! set_input_fragment(rstrm)))
return (FALSE);
}
rstrm->last_frag = FALSE;
return (TRUE);
}
static bool_t /* must manage buffers, fragments, and records */
xdrrec_getbytes(
XDR *xdrs,
void *baddr,
uint_t len)
{
char *addr = baddr;
RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
int current;
while (len > 0) {
current = rstrm->fbtbc;
if (current == 0) {
if (rstrm->last_frag)
return (FALSE);
if (! set_input_fragment(rstrm))
return (FALSE);
continue;
}
current = (len < current) ? len : current;
if (! get_input_bytes(rstrm, addr, current))
return (FALSE);
addr += current;
rstrm->fbtbc -= current;
len -= current;
}
return (TRUE);
}
/*
* Before reading (deserializing) from the stream, one should always call
* this procedure to guarantee proper record alignment.
*/
XDR_API bool_t
xdrrec_skiprecord(XDR *xdrs)
{
/* LINTED pointer cast */
RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
if (rstrm->in_nonblock) {
enum xprt_stat pstat;
/*
* Read and discard a record from the non-blocking
* buffer. Return succes only if a complete record can
* be retrieved without blocking, or if the buffer was
* empty and there was no data to fetch.
*/
if (__xdrrec_getbytes_nonblock(xdrs, &pstat) ||
(pstat == XPRT_MOREREQS &&
rstrm->in_finger == rstrm->in_boundry)) {
rstrm->fbtbc = 0;
return (TRUE);
}
return (FALSE);
}
while (rstrm->fbtbc > 0 || (!rstrm->last_frag)) {
if (!skip_input_bytes(rstrm, rstrm->fbtbc))
return (FALSE);
rstrm->fbtbc = 0;
if ((!rstrm->last_frag) && (!set_input_fragment(rstrm)))
return (FALSE);
}
rstrm->last_frag = FALSE;
return (TRUE);
}
static bool /* must manage buffers, fragments, and records */
xdr_inrec_getbytes(XDR *xdrs, char *addr, u_int len)
{
RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
int current;
while (len > 0) {
current = (int)rstrm->fbtbc;
if (current == 0) {
if (rstrm->last_frag)
return (FALSE);
if (! set_input_fragment(rstrm, INT_MAX))
return (FALSE);
continue;
}
current = (len < current) ? len : current;
if (! get_input_bytes(rstrm, addr, current, INT_MAX))
return (FALSE);
addr += current;
rstrm->fbtbc -= current;
len -= current;
/* handle checksumming if requested */
if (xdrs->x_flags & XDR_FLAG_CKSUM) {
if (rstrm->cklen) {
if (! (rstrm->cksum)) {
if (rstrm->offset >= rstrm->cklen) {
compute_buffer_cksum(rstrm);
}
}
}
}
}
return (TRUE);
}
/*
* This is just like the ops vector x_getbytes(), except that
* instead of returning success or failure on getting a certain number
* of bytes, it behaves much more like the read() system call against a
* pipe -- it returns up to the number of bytes requested and a return of
* zero indicates end-of-record. A -1 means something very bad happened.
*/
XDR_API u_int /* must manage buffers, fragments, and records */
xdrrec_readbytes(XDR *xdrs, caddr_t addr, u_int l)
{
/* LINTED pointer cast */
RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
int current, len;
len = l;
while (len > 0) {
current = rstrm->fbtbc;
if (current == 0) {
if (rstrm->last_frag)
return (l - len);
if (!set_input_fragment(rstrm))
return ((u_int)-1);
continue;
}
current = (len < current) ? len : current;
if (!get_input_bytes(rstrm, addr, current, FALSE))
return ((u_int)-1);
addr += current;
rstrm->fbtbc -= current;
len -= current;
}
return (l - len);
}
static bool_t
xdrrec_control(XDR *xdrs, int request, void *info)
{
/* LINTED pointer cast */
RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
xdr_bytesrec *xptr;
switch (request) {
case XDR_GET_BYTES_AVAIL:
/* Check if at end of fragment and not last fragment */
if ((rstrm->fbtbc == 0) && (!rstrm->last_frag))
if (!set_input_fragment(rstrm)) {
return (FALSE);
};
xptr = (xdr_bytesrec *)info;
xptr->xc_is_last_record = rstrm->last_frag;
xptr->xc_num_avail = rstrm->fbtbc;
return (TRUE);
default:
return (FALSE);
}
}
static bool_t /* must manage buffers, fragments, and records */
xdrrec_getbytes(
XDR *xdrs,
register char* addr,
register unsigned len)
{
register RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
register int current;
while (len != 0) {
current = (int)rstrm->fbtbc;
if (current == 0) {
if (rstrm->last_frag)
return (FALSE);
if (! set_input_fragment(rstrm))
return (FALSE);
continue;
}
current = (len < current) ? (int)len : current;
if (! get_input_bytes(rstrm, addr, current))
return (FALSE);
addr += current;
rstrm->fbtbc -= current;
len -= current;
}
return (TRUE);
}
/*
* Before reading (deserializing from the stream, one should always call
* this procedure to guarantee proper record alignment.
*/
bool_t
xdrrec_skiprecord(XDR *xdrs)
{
register RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
while (rstrm->fbtbc > 0 || (! rstrm->last_frag)) {
if (! skip_input_bytes(rstrm, rstrm->fbtbc))
return (FALSE);
rstrm->fbtbc = 0;
if ((! rstrm->last_frag) && (! set_input_fragment(rstrm)))
return (FALSE);
}
rstrm->last_frag = FALSE;
return (TRUE);
}
/*
* Look ahead function.
* Returns TRUE iff there is no more input in the buffer
* after consuming the rest of the current record.
*/
bool_t
xdrrec_eof(XDR *xdrs)
{
RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
while (rstrm->fbtbc > 0 || (! rstrm->last_frag)) {
if (! skip_input_bytes(rstrm, rstrm->fbtbc))
return (TRUE);
rstrm->fbtbc = 0;
if ((! rstrm->last_frag) && (! set_input_fragment(rstrm)))
return (TRUE);
}
if (rstrm->in_finger == rstrm->in_boundry)
return (TRUE);
return (FALSE);
}
/*
* Before reading (deserializing from the stream), one should always call
* this procedure to guarantee proper record alignment.
*/
bool
xdr_inrec_skiprecord(XDR *xdrs)
{
RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
while (rstrm->fbtbc > 0 || (! rstrm->last_frag)) {
if (! skip_input_bytes(rstrm, rstrm->fbtbc))
return (FALSE);
rstrm->fbtbc = 0;
if ((! rstrm->last_frag) && (! set_input_fragment(rstrm, INT_MAX)))
return (FALSE);
}
rstrm->last_frag = FALSE;
rstrm->offset = 0;
rstrm->cksum = 0;
return (TRUE);
}
bool
xdr_inrec_readahead(XDR *xdrs, u_int maxfraglen)
{
RECSTREAM *rstrm;
int current;
rstrm = (RECSTREAM *)xdrs->x_private;
current = (int)rstrm->fbtbc;
if (current == 0) {
if (rstrm->last_frag) {
return (FALSE);
}
if (! set_input_fragment(rstrm, maxfraglen))
return (FALSE);
}
return (TRUE);
}
/*
* Look ahead fuction.
* Returns TRUE iff there is no more input in the buffer
* after consuming the rest of the current record.
*/
XDR_API bool_t
xdrrec_eof(XDR *xdrs)
{
/* LINTED pointer cast */
RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
if (rstrm->in_nonblock) {
/*
* If in_needpoll is true, the non-blocking XDR stream
* does not have a complete record.
*/
return (rstrm->in_needpoll);
}
while (rstrm->fbtbc > 0 || (!rstrm->last_frag)) {
if (!skip_input_bytes(rstrm, rstrm->fbtbc))
return (TRUE);
rstrm->fbtbc = 0;
if ((!rstrm->last_frag) && (!set_input_fragment(rstrm)))
return (TRUE);
}
if (rstrm->in_finger == rstrm->in_boundry)
return (TRUE);
return (FALSE);
}
static bool /* must manage buffers, fragments, and records */
xdrrec_getbytes(XDR *xdrs, char *addr, u_int len)
{
RECSTREAM *rstrm = (RECSTREAM *) (xdrs->x_private);
int current;
while (len > 0) {
current = (int)rstrm->fbtbc;
if (current == 0) {
if (rstrm->last_frag)
return (false);
if (!set_input_fragment(rstrm))
return (false);
continue;
}
current = (len < current) ? len : current;
if (!get_input_bytes(rstrm, addr, current))
return (false);
addr += current;
rstrm->fbtbc -= current;
len -= current;
}
return (true);
}
