static enum clnt_stat
clnt_vc_call(CLIENT *cl, rpcproc_t proc, xdrproc_t xdr_args, void *args_ptr,
xdrproc_t xdr_results, void *results_ptr, struct timeval timeout)
{
struct ct_data *ct = (struct ct_data *) cl->cl_private;
XDR *xdrs = &(ct->ct_xdrs);
struct rpc_msg reply_msg;
u_int32_t x_id;
u_int32_t *msg_x_id = &ct->ct_u.ct_mcalli; /* yuk */
bool_t shipnow;
int refreshes = 2;
sigset_t mask, newmask;
int rpc_lock_value;
bool_t reply_stat;
assert(cl != NULL);
sigfillset(&newmask);
thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
mutex_lock(&clnt_fd_lock);
while (vc_fd_locks[ct->ct_fd])
cond_wait(&vc_cv[ct->ct_fd], &clnt_fd_lock);
if (__isthreaded)
rpc_lock_value = 1;
else
rpc_lock_value = 0;
vc_fd_locks[ct->ct_fd] = rpc_lock_value;
mutex_unlock(&clnt_fd_lock);
if (!ct->ct_waitset) {
/* If time is not within limits, we ignore it. */
if (time_not_ok(&timeout) == FALSE)
ct->ct_wait = timeout;
}
shipnow =
(xdr_results == NULL && timeout.tv_sec == 0
&& timeout.tv_usec == 0) ? FALSE : TRUE;
call_again:
xdrs->x_op = XDR_ENCODE;
ct->ct_error.re_status = RPC_SUCCESS;
x_id = ntohl(--(*msg_x_id));
if (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
if ((! XDR_PUTBYTES(xdrs, ct->ct_u.ct_mcallc, ct->ct_mpos)) ||
(! XDR_PUTINT32(xdrs, &proc)) ||
(! AUTH_MARSHALL(cl->cl_auth, xdrs)) ||
(! (*xdr_args)(xdrs, args_ptr))) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status = RPC_CANTENCODEARGS;
(void)xdrrec_endofrecord(xdrs, TRUE);
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
} else {
*(uint32_t *) &ct->ct_u.ct_mcallc[ct->ct_mpos] = htonl(proc);
if (! __rpc_gss_wrap(cl->cl_auth, ct->ct_u.ct_mcallc,
ct->ct_mpos + sizeof(uint32_t),
xdrs, xdr_args, args_ptr)) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status = RPC_CANTENCODEARGS;
(void)xdrrec_endofrecord(xdrs, TRUE);
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
}
if (! xdrrec_endofrecord(xdrs, shipnow)) {
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status = RPC_CANTSEND);
}
if (! shipnow) {
release_fd_lock(ct->ct_fd, mask);
return (RPC_SUCCESS);
}
/*
* Hack to provide rpc-based message passing
*/
if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
release_fd_lock(ct->ct_fd, mask);
return(ct->ct_error.re_status = RPC_TIMEDOUT);
}
/*
* Keep receiving until we get a valid transaction id
*/
xdrs->x_op = XDR_DECODE;
while (TRUE) {
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = NULL;
reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void;
if (! xdrrec_skiprecord(xdrs)) {
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
/* now decode and validate the response header */
if (! xdr_replymsg(xdrs, &reply_msg)) {
if (ct->ct_error.re_status == RPC_SUCCESS)
continue;
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
if (reply_msg.rm_xid == x_id)
break;
}
/*
* process header
*/
_seterr_reply(&reply_msg, &(ct->ct_error));
if (ct->ct_error.re_status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(cl->cl_auth,
&reply_msg.acpted_rply.ar_verf)) {
ct->ct_error.re_status = RPC_AUTHERROR;
ct->ct_error.re_why = AUTH_INVALIDRESP;
} else {
if (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
reply_stat = (*xdr_results)(xdrs, results_ptr);
} else {
reply_stat = __rpc_gss_unwrap(cl->cl_auth,
xdrs, xdr_results, results_ptr);
}
if (! reply_stat) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status =
RPC_CANTDECODERES;
}
}
/* free verifier ... */
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void)xdr_opaque_auth(xdrs,
&(reply_msg.acpted_rply.ar_verf));
}
} /* end successful completion */
else {
/* maybe our credentials need to be refreshed ... */
if (refreshes-- && AUTH_REFRESH(cl->cl_auth, &reply_msg))
goto call_again;
} /* end of unsuccessful completion */
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
static enum clnt_stat
clnttcp_call(CLIENT *h, u_long proc, xdrproc_t xdr_args, caddr_t args_ptr,
xdrproc_t xdr_results, caddr_t results_ptr, struct timeval timeout)
{
struct ct_data *ct = (struct ct_data *) h->cl_private;
XDR *xdrs = &(ct->ct_xdrs);
struct rpc_msg reply_msg;
u_long x_id;
u_int32_t *msg_x_id = (u_int32_t *)(ct->ct_mcall); /* yuk */
bool_t shipnow;
int refreshes = 2;
if (!ct->ct_waitset) {
ct->ct_wait = timeout;
}
shipnow =
(xdr_results == NULL && timeout.tv_sec == 0
&& timeout.tv_usec == 0) ? FALSE : TRUE;
call_again:
xdrs->x_op = XDR_ENCODE;
ct->ct_error.re_status = RPC_SUCCESS;
x_id = ntohl(--(*msg_x_id));
if ((! XDR_PUTBYTES(xdrs, ct->ct_mcall, ct->ct_mpos)) ||
(! XDR_PUTLONG(xdrs, (long *)&proc)) ||
(! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
(! (*xdr_args)(xdrs, args_ptr))) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status = RPC_CANTENCODEARGS;
(void)xdrrec_endofrecord(xdrs, TRUE);
return (ct->ct_error.re_status);
}
if (! xdrrec_endofrecord(xdrs, shipnow))
return (ct->ct_error.re_status = RPC_CANTSEND);
if (! shipnow)
return (RPC_SUCCESS);
/*
* Hack to provide rpc-based message passing
*/
if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
return(ct->ct_error.re_status = RPC_TIMEDOUT);
}
/*
* Keep receiving until we get a valid transaction id
*/
xdrs->x_op = XDR_DECODE;
while (TRUE) {
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = NULL;
reply_msg.acpted_rply.ar_results.proc = xdr_void;
if (! xdrrec_skiprecord(xdrs))
return (ct->ct_error.re_status);
/* now decode and validate the response header */
if (! xdr_replymsg(xdrs, &reply_msg)) {
if (ct->ct_error.re_status == RPC_SUCCESS)
continue;
return (ct->ct_error.re_status);
}
if (reply_msg.rm_xid == x_id)
break;
}
/*
* process header
*/
_seterr_reply(&reply_msg, &(ct->ct_error));
if (ct->ct_error.re_status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(h->cl_auth, &reply_msg.acpted_rply.ar_verf)) {
ct->ct_error.re_status = RPC_AUTHERROR;
ct->ct_error.re_why = AUTH_INVALIDRESP;
} else if (! (*xdr_results)(xdrs, results_ptr)) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status = RPC_CANTDECODERES;
}
/* free verifier ... */
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void)xdr_opaque_auth(xdrs, &(reply_msg.acpted_rply.ar_verf));
}
} /* end successful completion */
else {
/* maybe our credentials need to be refreshed ... */
if (refreshes-- && AUTH_REFRESH(h->cl_auth))
goto call_again;
} /* end of unsuccessful completion */
return (ct->ct_error.re_status);
}
static enum clnt_stat
clnt_dg_call(CLIENT *cl, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp, struct timeval utimeout)
{
/* LINTED pointer alignment */
struct cu_data *cu = (struct cu_data *)cl->cl_private;
XDR *xdrs;
int outlen;
struct rpc_msg reply_msg;
XDR reply_xdrs;
struct timeval time_waited;
bool_t ok;
int nrefreshes = 2; /* number of times to refresh cred */
struct timeval timeout;
struct timeval retransmit_time;
struct timeval poll_time;
struct timeval startime, curtime;
struct t_unitdata tu_data;
int res; /* result of operations */
uint32_t x_id;
if (rpc_fd_lock(dgtbl, cu->cu_fd)) {
rpc_callerr.re_status = RPC_FAILED;
rpc_callerr.re_errno = errno;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (RPC_FAILED);
}
if (cu->cu_total.tv_usec == -1) {
timeout = utimeout; /* use supplied timeout */
} else {
timeout = cu->cu_total; /* use default timeout */
}
time_waited.tv_sec = 0;
time_waited.tv_usec = 0;
retransmit_time = cu->cu_wait;
tu_data.addr = cu->cu_raddr;
call_again:
xdrs = &(cu->cu_outxdrs);
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
/*
* Due to little endian byte order, it is necessary to convert to host
* format before incrementing xid.
*/
/* LINTED pointer cast */
x_id = ntohl(*(uint32_t *)(cu->cu_outbuf)) + 1; /* set XID */
/* LINTED pointer cast */
*(uint32_t *)cu->cu_outbuf = htonl(x_id);
if (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
if ((!XDR_PUTBYTES(xdrs, cu->cu_outbuf, cu->cu_xdrpos)) ||
(!XDR_PUTINT32(xdrs, (int32_t *)&proc)) ||
(!AUTH_MARSHALL(cl->cl_auth, xdrs)) ||
(!xargs(xdrs, argsp))) {
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTENCODEARGS);
}
} else {
/* LINTED pointer alignment */
uint32_t *u = (uint32_t *)&cu->cu_outbuf[cu->cu_xdrpos];
IXDR_PUT_U_INT32(u, proc);
if (!__rpc_gss_wrap(cl->cl_auth, cu->cu_outbuf,
((char *)u) - cu->cu_outbuf, xdrs, xargs, argsp)) {
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTENCODEARGS);
}
}
outlen = (int)XDR_GETPOS(xdrs);
send_again:
tu_data.udata.buf = cu->cu_outbuf_start;
tu_data.udata.len = outlen;
tu_data.opt.len = 0;
if (t_sndudata(cu->cu_fd, &tu_data) == -1) {
rpc_callerr.re_terrno = t_errno;
rpc_callerr.re_errno = errno;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTSEND);
}
/*
* Hack to provide rpc-based message passing
*/
if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_TIMEDOUT);
}
/*
* sub-optimal code appears here because we have
* some clock time to spare while the packets are in flight.
* (We assume that this is actually only executed once.)
*/
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = NULL;
reply_msg.acpted_rply.ar_results.proc = xdr_void;
/*
* Set polling time so that we don't wait for
* longer than specified by the total time to wait,
* or the retransmit time.
*/
poll_time.tv_sec = timeout.tv_sec - time_waited.tv_sec;
poll_time.tv_usec = timeout.tv_usec - time_waited.tv_usec;
while (poll_time.tv_usec < 0) {
poll_time.tv_usec += 1000000;
poll_time.tv_sec--;
}
if (poll_time.tv_sec < 0 || (poll_time.tv_sec == 0 &&
poll_time.tv_usec == 0)) {
/*
* this could happen if time_waited >= timeout
*/
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_TIMEDOUT);
}
if (poll_time.tv_sec > retransmit_time.tv_sec ||
(poll_time.tv_sec == retransmit_time.tv_sec &&
poll_time.tv_usec > retransmit_time.tv_usec))
poll_time = retransmit_time;
for (;;) {
(void) gettimeofday(&startime, NULL);
switch (poll(&cu->pfdp, 1,
__rpc_timeval_to_msec(&poll_time))) {
case -1:
if (errno != EINTR && errno != EAGAIN) {
rpc_callerr.re_errno = errno;
rpc_callerr.re_terrno = 0;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTRECV);
}
/*FALLTHROUGH*/
case 0:
/*
* update time waited
*/
timeout: (void) gettimeofday(&curtime, NULL);
time_waited.tv_sec += curtime.tv_sec - startime.tv_sec;
time_waited.tv_usec += curtime.tv_usec -
startime.tv_usec;
while (time_waited.tv_usec >= 1000000) {
time_waited.tv_usec -= 1000000;
time_waited.tv_sec++;
}
while (time_waited.tv_usec < 0) {
time_waited.tv_usec += 1000000;
time_waited.tv_sec--;
}
/*
* decrement time left to poll by same amount
*/
poll_time.tv_sec -= curtime.tv_sec - startime.tv_sec;
poll_time.tv_usec -= curtime.tv_usec - startime.tv_usec;
while (poll_time.tv_usec >= 1000000) {
poll_time.tv_usec -= 1000000;
poll_time.tv_sec++;
}
while (poll_time.tv_usec < 0) {
poll_time.tv_usec += 1000000;
poll_time.tv_sec--;
}
/*
* if there's time left to poll, poll again
*/
if (poll_time.tv_sec > 0 ||
(poll_time.tv_sec == 0 && poll_time.tv_usec > 0))
continue;
/*
* if there's more time left, retransmit;
* otherwise, return timeout error
*/
if (time_waited.tv_sec < timeout.tv_sec ||
(time_waited.tv_sec == timeout.tv_sec &&
time_waited.tv_usec < timeout.tv_usec)) {
/*
* update retransmit_time
*/
retransmit_time.tv_usec *= 2;
retransmit_time.tv_sec *= 2;
while (retransmit_time.tv_usec >= 1000000) {
retransmit_time.tv_usec -= 1000000;
retransmit_time.tv_sec++;
}
if (retransmit_time.tv_sec >= RPC_MAX_BACKOFF) {
retransmit_time.tv_sec =
RPC_MAX_BACKOFF;
retransmit_time.tv_usec = 0;
}
/*
* redo AUTH_MARSHAL if AUTH_DES or RPCSEC_GSS.
*/
if (cl->cl_auth->ah_cred.oa_flavor ==
AUTH_DES ||
cl->cl_auth->ah_cred.oa_flavor ==
RPCSEC_GSS)
goto call_again;
else
goto send_again;
}
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_TIMEDOUT);
default:
break;
}
if (cu->pfdp.revents & POLLNVAL || (cu->pfdp.revents == 0)) {
rpc_callerr.re_status = RPC_CANTRECV;
/*
* Note: we're faking errno here because we
* previously would have expected select() to
* return -1 with errno EBADF. Poll(BA_OS)
* returns 0 and sets the POLLNVAL revents flag
* instead.
*/
rpc_callerr.re_errno = errno = EBADF;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (-1);
}
/* We have some data now */
do {
int moreflag; /* flag indicating more data */
moreflag = 0;
res = t_rcvudata(cu->cu_fd, cu->cu_tr_data, &moreflag);
if (moreflag & T_MORE) {
/*
* Drop this packet. I aint got any
* more space.
*/
res = -1;
/* I should not really be doing this */
errno = 0;
/*
* XXX: Not really Buffer overflow in the
* sense of TLI.
*/
t_errno = TBUFOVFLW;
}
} while (res < 0 && (t_errno == TSYSERR && errno == EINTR));
if (res < 0) {
int err, errnoflag = FALSE;
#ifdef sun
if (t_errno == TSYSERR && errno == EWOULDBLOCK)
#else
if (t_errno == TSYSERR && errno == EAGAIN)
#endif
continue;
if (t_errno == TLOOK) {
if ((err = _rcv_unitdata_err(cu)) == 0)
continue;
else if (err == 1)
errnoflag = TRUE;
} else {
rpc_callerr.re_terrno = t_errno;
}
if (errnoflag == FALSE)
rpc_callerr.re_errno = errno;
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status = RPC_CANTRECV);
}
if (cu->cu_tr_data->udata.len < (uint_t)sizeof (uint32_t))
continue;
/* see if reply transaction id matches sent id */
/* LINTED pointer alignment */
if (*((uint32_t *)(cu->cu_inbuf)) !=
/* LINTED pointer alignment */
*((uint32_t *)(cu->cu_outbuf)))
goto timeout;
/* we now assume we have the proper reply */
break;
}
/*
* now decode and validate the response
*/
xdrmem_create(&reply_xdrs, cu->cu_inbuf,
(uint_t)cu->cu_tr_data->udata.len, XDR_DECODE);
ok = xdr_replymsg(&reply_xdrs, &reply_msg);
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
if (ok) {
if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(reply_msg.acpted_rply.ar_stat == SUCCESS))
rpc_callerr.re_status = RPC_SUCCESS;
else
__seterr_reply(&reply_msg, &(rpc_callerr));
if (rpc_callerr.re_status == RPC_SUCCESS) {
if (!AUTH_VALIDATE(cl->cl_auth,
&reply_msg.acpted_rply.ar_verf)) {
rpc_callerr.re_status = RPC_AUTHERROR;
rpc_callerr.re_why = AUTH_INVALIDRESP;
} else if (cl->cl_auth->ah_cred.oa_flavor !=
RPCSEC_GSS) {
if (!(*xresults)(&reply_xdrs, resultsp)) {
if (rpc_callerr.re_status ==
RPC_SUCCESS)
rpc_callerr.re_status =
RPC_CANTDECODERES;
}
} else if (!__rpc_gss_unwrap(cl->cl_auth, &reply_xdrs,
xresults, resultsp)) {
if (rpc_callerr.re_status == RPC_SUCCESS)
rpc_callerr.re_status =
RPC_CANTDECODERES;
}
} /* end successful completion */
/*
* If unsuccesful AND error is an authentication error
* then refresh credentials and try again, else break
*/
else if (rpc_callerr.re_status == RPC_AUTHERROR)
/* maybe our credentials need to be refreshed ... */
if (nrefreshes-- &&
AUTH_REFRESH(cl->cl_auth, &reply_msg))
goto call_again;
else
/*
* We are setting rpc_callerr here given that
* libnsl is not reentrant thereby
* reinitializing the TSD. If not set here then
* success could be returned even though refresh
* failed.
*/
rpc_callerr.re_status = RPC_AUTHERROR;
/* end of unsuccessful completion */
/* free verifier */
if (reply_msg.rm_reply.rp_stat == MSG_ACCEPTED &&
reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void) xdr_opaque_auth(xdrs,
&(reply_msg.acpted_rply.ar_verf));
}
} /* end of valid reply message */
else {
rpc_callerr.re_status = RPC_CANTDECODERES;
}
rpc_fd_unlock(dgtbl, cu->cu_fd);
return (rpc_callerr.re_status);
}
static enum clnt_stat clntudp_call(CLIENT *cl, unsigned long proc,
xdrproc_t xargs, char* argsp,
xdrproc_t xresults, char* resultsp,
struct timeval utimeout)
{
register struct cu_data *cu = (struct cu_data *) cl->cl_private;
register XDR *xdrs;
register int outlen;
register int inlen;
socklen_t fromlen;
struct sockaddr_in from;
struct rpc_msg reply_msg;
XDR reply_xdrs;
bool_t ok;
int nrefreshes = 2; /* number of times to refresh cred */
call_again:
xdrs = &(cu->cu_outxdrs);
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, cu->cu_xdrpos);
/*
* the transaction is the first thing in the out buffer
*/
(*(unsigned long *) (cu->cu_outbuf))++;
if ((!XDR_PUTLONG(xdrs, (long *) &proc)) ||
(!AUTH_MARSHALL(cl->cl_auth, xdrs)) || (!(*xargs) (xdrs, argsp)))
return (cu->cu_error.re_status = RPC_CANTENCODEARGS);
outlen = (int) XDR_GETPOS(xdrs);
send_again:
if (sendto(cu->cu_sock, cu->cu_outbuf, outlen, 0,
(struct sockaddr *) &(cu->cu_raddr), cu->cu_rlen)
!= outlen)
{
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTSEND);
}
/*
* sub-optimal code appears here because we have
* some clock time to spare while the packets are in flight.
* (We assume that this is actually only executed once.)
*/
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = resultsp;
reply_msg.acpted_rply.ar_results.proc = xresults;
/* do recv */
do
{
fromlen = sizeof(struct sockaddr);
inlen = recvfrom(cu->cu_sock, cu->cu_inbuf,
(int) cu->cu_recvsz, 0,
(struct sockaddr *) &from, &fromlen);
}while (inlen < 0 && errno == EINTR);
if (inlen < 4)
{
rt_kprintf("recv error, len %d\n", inlen);
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTRECV);
}
/* see if reply transaction id matches sent id */
if (*((uint32_t *) (cu->cu_inbuf)) != *((uint32_t *) (cu->cu_outbuf)))
goto send_again;
/* we now assume we have the proper reply */
/*
* now decode and validate the response
*/
xdrmem_create(&reply_xdrs, cu->cu_inbuf, (unsigned int) inlen, XDR_DECODE);
ok = xdr_replymsg(&reply_xdrs, &reply_msg);
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
if (ok)
{
_seterr_reply(&reply_msg, &(cu->cu_error));
if (cu->cu_error.re_status == RPC_SUCCESS)
{
if (!AUTH_VALIDATE(cl->cl_auth,
&reply_msg.acpted_rply.ar_verf))
{
cu->cu_error.re_status = RPC_AUTHERROR;
cu->cu_error.re_why = AUTH_INVALIDRESP;
}
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL)
{
xdrs->x_op = XDR_FREE;
(void) xdr_opaque_auth(xdrs, &(reply_msg.acpted_rply.ar_verf));
}
} /* end successful completion */
else
{
/* maybe our credentials need to be refreshed ... */
if (nrefreshes > 0 && AUTH_REFRESH(cl->cl_auth))
{
nrefreshes--;
goto call_again;
}
} /* end of unsuccessful completion */
} /* end of valid reply message */
else
{
cu->cu_error.re_status = RPC_CANTDECODERES;
}
return (cu->cu_error.re_status);
}
/* ARGSUSED */
static enum clnt_stat
clnt_door_call(CLIENT *cl, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp, struct timeval utimeout)
{
/* LINTED pointer alignment */
struct cu_data *cu = (struct cu_data *)cl->cl_private;
XDR xdrs;
door_arg_t params;
char *outbuf_ref;
struct rpc_msg reply_msg;
bool_t need_to_unmap;
int nrefreshes = 2; /* number of times to refresh cred */
rpc_callerr.re_errno = 0;
rpc_callerr.re_terrno = 0;
if ((params.rbuf = alloca(cu->cu_sendsz)) == NULL) {
rpc_callerr.re_terrno = 0;
rpc_callerr.re_errno = errno;
return (rpc_callerr.re_status = RPC_SYSTEMERROR);
}
outbuf_ref = params.rbuf;
params.rsize = cu->cu_sendsz;
if ((params.data_ptr = alloca(cu->cu_sendsz)) == NULL) {
rpc_callerr.re_terrno = 0;
rpc_callerr.re_errno = errno;
return (rpc_callerr.re_status = RPC_SYSTEMERROR);
}
call_again:
xdrmem_create(&xdrs, params.data_ptr, cu->cu_sendsz, XDR_ENCODE);
/* LINTED pointer alignment */
(*(uint32_t *)cu->cu_header)++; /* increment XID */
(void) memcpy(params.data_ptr, cu->cu_header, cu->cu_xdrpos);
XDR_SETPOS(&xdrs, cu->cu_xdrpos);
if ((!XDR_PUTINT32(&xdrs, (int32_t *)&proc)) ||
(!AUTH_MARSHALL(cl->cl_auth, &xdrs)) ||
(!(*xargs)(&xdrs, argsp))) {
return (rpc_callerr.re_status = RPC_CANTENCODEARGS);
}
params.data_size = (int)XDR_GETPOS(&xdrs);
params.desc_ptr = NULL;
params.desc_num = 0;
if (door_call(cu->cu_fd, ¶ms) < 0) {
rpc_callerr.re_errno = errno;
return (rpc_callerr.re_status = RPC_CANTSEND);
}
if (params.rbuf == NULL || params.rsize == 0) {
return (rpc_callerr.re_status = RPC_FAILED);
}
need_to_unmap = (params.rbuf != outbuf_ref);
/* LINTED pointer alignment */
if (*(uint32_t *)params.rbuf != *(uint32_t *)cu->cu_header) {
rpc_callerr.re_status = RPC_CANTDECODERES;
goto done;
}
xdrmem_create(&xdrs, params.rbuf, params.rsize, XDR_DECODE);
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = resultsp;
reply_msg.acpted_rply.ar_results.proc = xresults;
if (xdr_replymsg(&xdrs, &reply_msg)) {
if (reply_msg.rm_reply.rp_stat == MSG_ACCEPTED &&
reply_msg.acpted_rply.ar_stat == SUCCESS)
rpc_callerr.re_status = RPC_SUCCESS;
else
__seterr_reply(&reply_msg, &rpc_callerr);
if (rpc_callerr.re_status == RPC_SUCCESS) {
if (!AUTH_VALIDATE(cl->cl_auth,
&reply_msg.acpted_rply.ar_verf)) {
rpc_callerr.re_status = RPC_AUTHERROR;
rpc_callerr.re_why = AUTH_INVALIDRESP;
}
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs.x_op = XDR_FREE;
(void) xdr_opaque_auth(&xdrs,
&(reply_msg.acpted_rply.ar_verf));
}
}
/*
* If unsuccesful AND error is an authentication error
* then refresh credentials and try again, else break
*/
else if (rpc_callerr.re_status == RPC_AUTHERROR) {
/*
* maybe our credentials need to be refreshed ...
*/
if (nrefreshes-- &&
AUTH_REFRESH(cl->cl_auth, &reply_msg)) {
if (need_to_unmap)
(void) munmap(params.rbuf,
params.rsize);
goto call_again;
} else
/*
* We are setting rpc_callerr here given that
* libnsl is not reentrant thereby
* reinitializing the TSD. If not set here then
* success could be returned even though refresh
* failed.
*/
rpc_callerr.re_status = RPC_AUTHERROR;
}
} else
rpc_callerr.re_status = RPC_CANTDECODERES;
done:
if (need_to_unmap)
(void) munmap(params.rbuf, params.rsize);
return (rpc_callerr.re_status);
}
static enum clnt_stat
clntudp_call(
register CLIENT *cl, /* client handle */
unsigned long proc, /* procedure number */
xdrproc_t xargs, /* xdr routine for args */
char* argsp, /* pointer to args */
xdrproc_t xresults, /* xdr routine for results */
char* resultsp, /* pointer to results */
struct timeval utimeout) /* seconds to wait before giving up */
{
register struct cu_data *cu = (struct cu_data *)cl->cl_private;
register XDR *xdrs;
register int outlen;
register ssize_t inlen;
socklen_t fromlen;
#ifdef FD_SETSIZE
fd_set readfds;
fd_set mask;
#else
int readfds;
register int mask;
#endif /* def FD_SETSIZE */
struct sockaddr_in from;
struct rpc_msg reply_msg;
XDR reply_xdrs;
struct timeval time_waited;
bool_t ok;
int nrefreshes = 2; /* number of times to refresh cred */
struct timeval timeout;
if (cu->cu_total.tv_usec == -1) {
timeout = utimeout; /* use supplied timeout */
} else {
timeout = cu->cu_total; /* use default timeout */
}
time_waited.tv_sec = 0;
time_waited.tv_usec = 0;
call_again:
xdrs = &(cu->cu_outxdrs);
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, cu->cu_xdrpos);
/*
* the transaction is the first thing in the out buffer
*/
(*(uint32_t*)(cu->cu_outbuf))++;
if ((! xdr_u_long(xdrs, &proc)) ||
(! AUTH_MARSHALL(cl->cl_auth, xdrs)) ||
(! (*xargs)(xdrs, argsp)))
return (cu->cu_error.re_status = RPC_CANTENCODEARGS);
outlen = (int)XDR_GETPOS(xdrs);
send_again:
if (sendto(cu->cu_sock, cu->cu_outbuf, outlen, 0,
(struct sockaddr *)&(cu->cu_raddr), cu->cu_rlen)
!= (ssize_t)outlen) {
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTSEND);
}
/*
* Hack to provide rpc-based message passing
*/
if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
return (cu->cu_error.re_status = RPC_TIMEDOUT);
}
/*
* sub-optimal code appears here because we have
* some clock time to spare while the packets are in flight.
* (We assume that this is actually only executed once.)
*/
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = resultsp;
reply_msg.acpted_rply.ar_results.proc = xresults;
#ifdef FD_SETSIZE
FD_ZERO(&mask);
FD_SET(cu->cu_sock, &mask);
#else
mask = 1 << cu->cu_sock;
#endif /* def FD_SETSIZE */
for (;;) {
struct timeval to = cu->cu_wait;
readfds = mask;
switch (select(cu->cu_sock+1, &readfds, NULL,
NULL, &to)) {
case 0:
time_waited.tv_sec += cu->cu_wait.tv_sec;
time_waited.tv_usec += cu->cu_wait.tv_usec;
while (time_waited.tv_usec >= 1000000) {
time_waited.tv_sec++;
time_waited.tv_usec -= 1000000;
}
if ((time_waited.tv_sec < timeout.tv_sec) ||
((time_waited.tv_sec == timeout.tv_sec) &&
(time_waited.tv_usec < timeout.tv_usec)))
goto send_again;
return (cu->cu_error.re_status = RPC_TIMEDOUT);
/*
* buggy in other cases because time_waited is not being
* updated.
*/
case -1:
if (errno == EINTR)
continue;
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTRECV);
}
do {
fromlen = (socklen_t)sizeof(struct sockaddr);
inlen = recvfrom(cu->cu_sock, cu->cu_inbuf,
(int) cu->cu_recvsz, 0,
(struct sockaddr *)&from, &fromlen);
} while (inlen < 0 && errno == EINTR);
if (inlen < 0) {
if (errno == EWOULDBLOCK)
continue;
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTRECV);
}
if (inlen < sizeof(uint32_t))
continue;
/* see if reply transaction id matches sent id */
if (*(uint32_t*)cu->cu_inbuf != *(uint32_t*)cu->cu_outbuf)
continue;
/* we now assume we have the proper reply */
break;
}
/*
* now decode and validate the response
*/
xdrmem_create(&reply_xdrs, cu->cu_inbuf, (unsigned)inlen,
XDR_DECODE);
ok = xdr_replymsg(&reply_xdrs, &reply_msg);
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
if (ok) {
_seterr_reply(&reply_msg, &(cu->cu_error));
if (cu->cu_error.re_status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(cl->cl_auth,
reply_msg.acpted_rply.ar_verf)) {
cu->cu_error.re_status = RPC_AUTHERROR;
cu->cu_error.re_why = AUTH_INVALIDRESP;
}
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void)xdr_opaque_auth(xdrs,
&(reply_msg.acpted_rply.ar_verf));
}
} /* end successful completion */
else {
/* maybe our credentials need to be refreshed ... */
if (nrefreshes > 0 && AUTH_REFRESH(cl->cl_auth)) {
nrefreshes--;
goto call_again;
}
} /* end of unsuccessful completion */
} /* end of valid reply message */
else {
cu->cu_error.re_status = RPC_CANTDECODERES;
}
return (cu->cu_error.re_status);
}
static enum clnt_stat
clnt_vc_call(
CLIENT *h,
rpcproc_t proc,
xdrproc_t xdr_args,
const char *args_ptr,
xdrproc_t xdr_results,
caddr_t results_ptr,
struct timeval timeout
)
{
struct ct_data *ct;
XDR *xdrs;
struct rpc_msg reply_msg;
u_int32_t x_id;
u_int32_t *msg_x_id;
bool_t shipnow;
int refreshes = 2;
#ifdef _REENTRANT
sigset_t mask, newmask;
#endif
_DIAGASSERT(h != NULL);
ct = (struct ct_data *) h->cl_private;
#ifdef _REENTRANT
__clnt_sigfillset(&newmask);
thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
mutex_lock(&clnt_fd_lock);
while (vc_fd_locks[ct->ct_fd])
cond_wait(&vc_cv[ct->ct_fd], &clnt_fd_lock);
vc_fd_locks[ct->ct_fd] = __rpc_lock_value;
mutex_unlock(&clnt_fd_lock);
#endif
xdrs = &(ct->ct_xdrs);
msg_x_id = &ct->ct_u.ct_mcalli;
if (!ct->ct_waitset) {
if (time_not_ok(&timeout) == FALSE)
ct->ct_wait = timeout;
}
shipnow =
(xdr_results == NULL && timeout.tv_sec == 0
&& timeout.tv_usec == 0) ? FALSE : TRUE;
call_again:
xdrs->x_op = XDR_ENCODE;
ct->ct_error.re_status = RPC_SUCCESS;
x_id = ntohl(--(*msg_x_id));
if ((! XDR_PUTBYTES(xdrs, ct->ct_u.ct_mcallc, ct->ct_mpos)) ||
(! XDR_PUTINT32(xdrs, (int32_t *)&proc)) ||
(! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
(! (*xdr_args)(xdrs, __UNCONST(args_ptr)))) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status = RPC_CANTENCODEARGS;
(void)xdrrec_endofrecord(xdrs, TRUE);
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
if (! xdrrec_endofrecord(xdrs, shipnow)) {
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status = RPC_CANTSEND);
}
if (! shipnow) {
release_fd_lock(ct->ct_fd, mask);
return (RPC_SUCCESS);
}
/*
* Hack to provide rpc-based message passing
*/
if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
release_fd_lock(ct->ct_fd, mask);
return(ct->ct_error.re_status = RPC_TIMEDOUT);
}
/*
* Keep receiving until we get a valid transaction id
*/
xdrs->x_op = XDR_DECODE;
for (;;) {
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = NULL;
reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void;
if (! xdrrec_skiprecord(xdrs)) {
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
/* now decode and validate the response header */
if (! xdr_replymsg(xdrs, &reply_msg)) {
if (ct->ct_error.re_status == RPC_SUCCESS)
continue;
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
if (reply_msg.rm_xid == x_id)
break;
}
/*
* process header
*/
_seterr_reply(&reply_msg, &(ct->ct_error));
if (ct->ct_error.re_status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(h->cl_auth,
&reply_msg.acpted_rply.ar_verf)) {
ct->ct_error.re_status = RPC_AUTHERROR;
ct->ct_error.re_why = AUTH_INVALIDRESP;
} else if (! (*xdr_results)(xdrs, results_ptr)) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status = RPC_CANTDECODERES;
}
/* free verifier ... */
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void)xdr_opaque_auth(xdrs,
&(reply_msg.acpted_rply.ar_verf));
}
} /* end successful completion */
else {
/* maybe our credentials need to be refreshed ... */
if (refreshes-- && AUTH_REFRESH(h->cl_auth))
goto call_again;
} /* end of unsuccessful completion */
release_fd_lock(ct->ct_fd, mask);
return (ct->ct_error.re_status);
}
static enum clnt_stat
clnt_dg_call(CLIENT *clnt, /* client handle */
AUTH *auth, /* auth handle */
rpcproc_t proc, /* procedure number */
xdrproc_t xargs, /* xdr routine for args */
void *argsp, /* pointer to args */
xdrproc_t xresults, /* xdr routine for results */
void *resultsp, /* pointer to results */
struct timeval utimeout
/* seconds to wait before giving up */)
{
struct cu_data *cu = CU_DATA((struct cx_data *)clnt->cl_p1);
XDR *xdrs;
size_t outlen = 0;
struct rpc_msg reply_msg;
XDR reply_xdrs;
bool ok;
int nrefreshes = 2; /* number of times to refresh cred */
struct timeval timeout;
struct pollfd fd;
int total_time, nextsend_time, tv = 0;
struct sockaddr *sa;
socklen_t __attribute__ ((unused)) inlen, salen;
ssize_t recvlen = 0;
u_int32_t xid, inval, outval;
bool slocked = false;
bool rlocked = false;
bool once = true;
outlen = 0;
rpc_dplx_slc(clnt);
slocked = true;
if (cu->cu_total.tv_usec == -1)
timeout = utimeout; /* use supplied timeout */
else
timeout = cu->cu_total; /* use default timeout */
total_time = timeout.tv_sec * 1000 + timeout.tv_usec / 1000;
nextsend_time = cu->cu_wait.tv_sec * 1000 + cu->cu_wait.tv_usec / 1000;
if (cu->cu_connect && !cu->cu_connected) {
if (connect
(cu->cu_fd, (struct sockaddr *)&cu->cu_raddr,
cu->cu_rlen) < 0) {
cu->cu_error.re_errno = errno;
cu->cu_error.re_status = RPC_CANTSEND;
goto out;
}
cu->cu_connected = 1;
}
if (cu->cu_connected) {
sa = NULL;
salen = 0;
} else {
sa = (struct sockaddr *)&cu->cu_raddr;
salen = cu->cu_rlen;
}
/* Clean up in case the last call ended in a longjmp(3) call. */
call_again:
if (!slocked) {
rpc_dplx_slc(clnt);
slocked = true;
}
xdrs = &(cu->cu_outxdrs);
if (cu->cu_async == true && xargs == NULL)
goto get_reply;
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, cu->cu_xdrpos);
/*
* the transaction is the first thing in the out buffer
* XXX Yes, and it's in network byte order, so we should to
* be careful when we increment it, shouldn't we.
*/
xid = ntohl(*(u_int32_t *) (void *)(cu->cu_outbuf));
xid++;
*(u_int32_t *) (void *)(cu->cu_outbuf) = htonl(xid);
if ((!XDR_PUTINT32(xdrs, (int32_t *) &proc))
|| (!AUTH_MARSHALL(auth, xdrs))
|| (!AUTH_WRAP(auth, xdrs, xargs, argsp))) {
cu->cu_error.re_status = RPC_CANTENCODEARGS;
goto out;
}
outlen = (size_t) XDR_GETPOS(xdrs);
send_again:
nextsend_time = cu->cu_wait.tv_sec * 1000 + cu->cu_wait.tv_usec / 1000;
if (sendto(cu->cu_fd, cu->cu_outbuf, outlen, 0, sa, salen) != outlen) {
cu->cu_error.re_errno = errno;
cu->cu_error.re_status = RPC_CANTSEND;
goto out;
}
get_reply:
/*
* sub-optimal code appears here because we have
* some clock time to spare while the packets are in flight.
* (We assume that this is actually only executed once.)
*/
rpc_dplx_suc(clnt);
slocked = false;
rpc_dplx_rlc(clnt);
rlocked = true;
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = NULL;
reply_msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
fd.fd = cu->cu_fd;
fd.events = POLLIN;
fd.revents = 0;
while ((total_time > 0) || once) {
tv = total_time < nextsend_time ? total_time : nextsend_time;
once = false;
switch (poll(&fd, 1, tv)) {
case 0:
total_time -= tv;
rpc_dplx_ruc(clnt);
rlocked = false;
if (total_time <= 0) {
cu->cu_error.re_status = RPC_TIMEDOUT;
goto out;
}
goto send_again;
case -1:
if (errno == EINTR)
continue;
cu->cu_error.re_status = RPC_CANTRECV;
cu->cu_error.re_errno = errno;
goto out;
}
break;
}
#ifdef IP_RECVERR
if (fd.revents & POLLERR) {
struct msghdr msg;
struct cmsghdr *cmsg;
struct sock_extended_err *e;
struct sockaddr_in err_addr;
struct sockaddr_in *sin = (struct sockaddr_in *)&cu->cu_raddr;
struct iovec iov;
char *cbuf = (char *)alloca(outlen + 256);
int ret;
iov.iov_base = cbuf + 256;
iov.iov_len = outlen;
msg.msg_name = (void *)&err_addr;
msg.msg_namelen = sizeof(err_addr);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_flags = 0;
msg.msg_control = cbuf;
msg.msg_controllen = 256;
ret = recvmsg(cu->cu_fd, &msg, MSG_ERRQUEUE);
if (ret >= 0 && memcmp(cbuf + 256, cu->cu_outbuf, ret) == 0
&& (msg.msg_flags & MSG_ERRQUEUE)
&& ((msg.msg_namelen == 0 && ret >= 12)
|| (msg.msg_namelen == sizeof(err_addr)
&& err_addr.sin_family == AF_INET
&& memcmp(&err_addr.sin_addr, &sin->sin_addr,
sizeof(err_addr.sin_addr)) == 0
&& err_addr.sin_port == sin->sin_port)))
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg;
cmsg = CMSG_NXTHDR(&msg, cmsg))
if ((cmsg->cmsg_level == SOL_IP)
&& (cmsg->cmsg_type == IP_RECVERR)) {
e = (struct sock_extended_err *)
CMSG_DATA(cmsg);
cu->cu_error.re_errno = e->ee_errno;
cu->cu_error.re_status = RPC_CANTRECV;
}
}
#endif
/* We have some data now */
do {
recvlen =
recvfrom(cu->cu_fd, cu->cu_inbuf, cu->cu_recvsz, 0, NULL,
NULL);
} while (recvlen < 0 && errno == EINTR);
if (recvlen < 0 && errno != EWOULDBLOCK) {
cu->cu_error.re_errno = errno;
cu->cu_error.re_status = RPC_CANTRECV;
goto out;
}
if (recvlen < sizeof(u_int32_t)) {
total_time -= tv;
rpc_dplx_ruc(clnt);
rlocked = false;
goto send_again;
}
if (cu->cu_async == true)
inlen = (socklen_t) recvlen;
else {
memcpy(&inval, cu->cu_inbuf, sizeof(u_int32_t));
memcpy(&outval, cu->cu_outbuf, sizeof(u_int32_t));
if (inval != outval) {
total_time -= tv;
rpc_dplx_ruc(clnt);
rlocked = false;
goto send_again;
}
inlen = (socklen_t) recvlen;
}
/*
* now decode and validate the response
*/
xdrmem_create(&reply_xdrs, cu->cu_inbuf, (u_int) recvlen, XDR_DECODE);
ok = xdr_replymsg(&reply_xdrs, &reply_msg);
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
if (ok) {
if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED)
&& (reply_msg.acpted_rply.ar_stat == SUCCESS))
cu->cu_error.re_status = RPC_SUCCESS;
else
_seterr_reply(&reply_msg, &(cu->cu_error));
if (cu->cu_error.re_status == RPC_SUCCESS) {
if (!AUTH_VALIDATE
(auth, &reply_msg.acpted_rply.ar_verf)) {
cu->cu_error.re_status = RPC_AUTHERROR;
cu->cu_error.re_why = AUTH_INVALIDRESP;
} else
if (!AUTH_UNWRAP
(auth, &reply_xdrs, xresults, resultsp)) {
if (cu->cu_error.re_status == RPC_SUCCESS)
cu->cu_error.re_status =
RPC_CANTDECODERES;
}
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void)xdr_opaque_auth(xdrs,
&(reply_msg.acpted_rply.
ar_verf));
}
}
/* end successful completion */
/*
* If unsuccesful AND error is an authentication error
* then refresh credentials and try again, else break
*/
else if (cu->cu_error.re_status == RPC_AUTHERROR)
/* maybe our credentials need to be refreshed ... */
if (nrefreshes > 0 && AUTH_REFRESH(auth, &reply_msg)) {
nrefreshes--;
rpc_dplx_ruc(clnt);
rlocked = false;
goto call_again;
}
/* end of unsuccessful completion */
} /* end of valid reply message */
else
cu->cu_error.re_status = RPC_CANTDECODERES;
out:
if (slocked)
rpc_dplx_suc(clnt);
if (rlocked)
rpc_dplx_ruc(clnt);
return (cu->cu_error.re_status);
}
static enum clnt_stat
clntudp_call (
CLIENT *cl, /* client handle */
u_long proc, /* procedure number */
xdrproc_t xargs, /* xdr routine for args */
caddr_t argsp, /* pointer to args */
xdrproc_t xresults, /* xdr routine for results */
caddr_t resultsp, /* pointer to results */
struct timeval utimeout /* seconds to wait before giving up */)
{
struct cu_data *cu = (struct cu_data *) cl->cl_private;
XDR *xdrs;
int outlen = 0;
int inlen;
socklen_t fromlen;
struct pollfd fd;
int milliseconds = (cu->cu_wait.tv_sec * 1000) +
(cu->cu_wait.tv_usec / 1000);
struct sockaddr_in from;
struct rpc_msg reply_msg;
XDR reply_xdrs;
struct timeval time_waited;
bool_t ok;
int nrefreshes = 2; /* number of times to refresh cred */
struct timeval timeout;
int anyup; /* any network interface up */
if (cu->cu_total.tv_usec == -1)
{
timeout = utimeout; /* use supplied timeout */
}
else
{
timeout = cu->cu_total; /* use default timeout */
}
time_waited.tv_sec = 0;
time_waited.tv_usec = 0;
call_again:
xdrs = &(cu->cu_outxdrs);
if (xargs == NULL)
goto get_reply;
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS (xdrs, cu->cu_xdrpos);
/*
* the transaction is the first thing in the out buffer
*/
(*(uint32_t *) (cu->cu_outbuf))++;
if ((!XDR_PUTLONG (xdrs, (long *) &proc)) ||
(!AUTH_MARSHALL (cl->cl_auth, xdrs)) ||
(!(*xargs) (xdrs, argsp)))
return (cu->cu_error.re_status = RPC_CANTENCODEARGS);
outlen = (int) XDR_GETPOS (xdrs);
send_again:
if (sendto (cu->cu_sock, cu->cu_outbuf, outlen, 0,
(struct sockaddr *) &(cu->cu_raddr), cu->cu_rlen)
!= outlen)
{
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTSEND);
}
/*
* Hack to provide rpc-based message passing
*/
if (timeout.tv_sec == 0 && timeout.tv_usec == 0)
{
return (cu->cu_error.re_status = RPC_TIMEDOUT);
}
get_reply:
/*
* sub-optimal code appears here because we have
* some clock time to spare while the packets are in flight.
* (We assume that this is actually only executed once.)
*/
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = resultsp;
reply_msg.acpted_rply.ar_results.proc = xresults;
fd.fd = cu->cu_sock;
fd.events = POLLIN;
anyup = 0;
for (;;)
{
switch (poll (&fd, 1, milliseconds))
{
case 0:
if (anyup == 0)
{
anyup = is_network_up (cu->cu_sock);
if (!anyup)
return (cu->cu_error.re_status = RPC_CANTRECV);
}
time_waited.tv_sec += cu->cu_wait.tv_sec;
time_waited.tv_usec += cu->cu_wait.tv_usec;
while (time_waited.tv_usec >= 1000000)
{
time_waited.tv_sec++;
time_waited.tv_usec -= 1000000;
}
if ((time_waited.tv_sec < timeout.tv_sec) ||
((time_waited.tv_sec == timeout.tv_sec) &&
(time_waited.tv_usec < timeout.tv_usec)))
goto send_again;
return (cu->cu_error.re_status = RPC_TIMEDOUT);
/*
* buggy in other cases because time_waited is not being
* updated.
*/
case -1:
if (errno == EINTR)
continue;
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTRECV);
}
#ifdef IP_RECVERR
if (fd.revents & POLLERR)
{
struct msghdr msg;
struct cmsghdr *cmsg;
struct sock_extended_err *e;
struct sockaddr_in err_addr;
struct iovec iov;
char *cbuf = (char *) alloca (outlen + 256);
int ret;
iov.iov_base = cbuf + 256;
iov.iov_len = outlen;
msg.msg_name = (void *) &err_addr;
msg.msg_namelen = sizeof (err_addr);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_flags = 0;
msg.msg_control = cbuf;
msg.msg_controllen = 256;
ret = recvmsg (cu->cu_sock, &msg, MSG_ERRQUEUE);
if (ret >= 0
&& memcmp (cbuf + 256, cu->cu_outbuf, ret) == 0
&& (msg.msg_flags & MSG_ERRQUEUE)
&& ((msg.msg_namelen == 0
&& ret >= 12)
|| (msg.msg_namelen == sizeof (err_addr)
&& err_addr.sin_family == AF_INET
&& memcmp (&err_addr.sin_addr, &cu->cu_raddr.sin_addr,
sizeof (err_addr.sin_addr)) == 0
&& err_addr.sin_port == cu->cu_raddr.sin_port)))
for (cmsg = CMSG_FIRSTHDR (&msg); cmsg;
cmsg = CMSG_NXTHDR (&msg, cmsg))
if (cmsg->cmsg_level == SOL_IP && cmsg->cmsg_type == IP_RECVERR)
{
e = (struct sock_extended_err *) CMSG_DATA(cmsg);
cu->cu_error.re_errno = e->ee_errno;
return (cu->cu_error.re_status = RPC_CANTRECV);
}
}
#endif
do
{
fromlen = sizeof (struct sockaddr);
inlen = recvfrom (cu->cu_sock, cu->cu_inbuf,
(int) cu->cu_recvsz, 0,
(struct sockaddr *) &from, &fromlen);
}
while (inlen < 0 && errno == EINTR);
if (inlen < 0)
{
if (errno == EWOULDBLOCK)
continue;
cu->cu_error.re_errno = errno;
return (cu->cu_error.re_status = RPC_CANTRECV);
}
if (inlen < 4)
continue;
/* see if reply transaction id matches sent id.
Don't do this if we only wait for a replay */
if (xargs != NULL
&& (*((u_int32_t *) (cu->cu_inbuf))
!= *((u_int32_t *) (cu->cu_outbuf))))
continue;
/* we now assume we have the proper reply */
break;
}
/*
* now decode and validate the response
*/
xdrmem_create (&reply_xdrs, cu->cu_inbuf, (u_int) inlen, XDR_DECODE);
ok = xdr_replymsg (&reply_xdrs, &reply_msg);
/* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */
if (ok)
{
_seterr_reply (&reply_msg, &(cu->cu_error));
if (cu->cu_error.re_status == RPC_SUCCESS)
{
if (!AUTH_VALIDATE (cl->cl_auth,
&reply_msg.acpted_rply.ar_verf))
{
cu->cu_error.re_status = RPC_AUTHERROR;
cu->cu_error.re_why = AUTH_INVALIDRESP;
}
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL)
{
xdrs->x_op = XDR_FREE;
(void) xdr_opaque_auth (xdrs,
&(reply_msg.acpted_rply.ar_verf));
}
} /* end successful completion */
else
{
/* maybe our credentials need to be refreshed ... */
if (nrefreshes > 0 && AUTH_REFRESH (cl->cl_auth))
{
nrefreshes--;
goto call_again;
}
} /* end of unsuccessful completion */
} /* end of valid reply message */
else
{
cu->cu_error.re_status = RPC_CANTDECODERES;
}
return cu->cu_error.re_status;
}
static enum clnt_stat
clnt_rdma_call(CLIENT *cl, /* client handle */
AUTH *auth,
rpcproc_t proc, /* procedure number */
xdrproc_t xargs, /* xdr routine for args */
void *argsp, /* pointer to args */
xdrproc_t xresults, /* xdr routine for results */
void *resultsp, /* pointer to results */
struct timeval utimeout /* seconds to wait before giving up */)
{
struct cm_data *cm = CM_DATA((struct cx_data *) cl->cl_p1);
XDR *xdrs;
struct rpc_msg reply_msg;
bool ok;
#if 0
struct timeval timeout;
int total_time;
#endif
// sigset_t mask;
socklen_t __attribute__((unused)) inlen, salen;
int nrefreshes = 2; /* number of times to refresh cred */
// thr_sigsetmask(SIG_SETMASK, (sigset_t *) 0, &mask); /* XXX */
// vc_fd_lock_c(cl, &mask); //What does that do?
#if 0
if (cm->cm_total.tv_usec == -1) {
timeout = utimeout; /* use supplied timeout */
} else {
timeout = cm->cm_total; /* use default timeout */
}
total_time = timeout.tv_sec * 1000 + timeout.tv_usec / 1000;
#endif
/* Clean up in case the last call ended in a longjmp(3) call. */
call_again:
xdrs = &(cm->cm_xdrs);
if (0) //FIXME check for async
goto get_reply;
if (! xdr_rdma_clnt_call(&cm->cm_xdrs, cm->call_msg.rm_xid) ||
! xdr_callhdr(&(cm->cm_xdrs), &cm->call_msg)) {
rpc_createerr.cf_stat = RPC_CANTENCODEARGS; /* XXX */
rpc_createerr.cf_error.re_errno = 0;
goto out;
}
if ((! XDR_PUTINT32(xdrs, (int32_t *)&proc)) ||
(! AUTH_MARSHALL(auth, xdrs)) ||
(! AUTH_WRAP(auth, xdrs, xargs, argsp))) {
cm->cm_error.re_status = RPC_CANTENCODEARGS;
goto out;
}
if (! xdr_rdma_clnt_flushout(&cm->cm_xdrs)) {
cm->cm_error.re_errno = errno;
cm->cm_error.re_status = RPC_CANTSEND;
goto out;
}
get_reply:
/*
* sub-optimal code appears here because we have
* some clock time to spare while the packets are in flight.
* (We assume that this is actually only executed once.)
*/
reply_msg.acpted_rply.ar_verf = _null_auth;
reply_msg.acpted_rply.ar_results.where = NULL;
reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void;
if (! xdr_rdma_clnt_reply(&cm->cm_xdrs, cm->call_msg.rm_xid)) {
//FIXME add timeout
cm->cm_error.re_status = RPC_TIMEDOUT;
goto out;
}
/*
* now decode and validate the response
*/
ok = xdr_replymsg(&cm->cm_xdrs, &reply_msg);
if (ok) {
if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(reply_msg.acpted_rply.ar_stat == SUCCESS))
cm->cm_error.re_status = RPC_SUCCESS;
else
_seterr_reply(&reply_msg, &(cm->cm_error));
if (cm->cm_error.re_status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(auth,
&reply_msg.acpted_rply.ar_verf)) {
cm->cm_error.re_status = RPC_AUTHERROR;
cm->cm_error.re_why = AUTH_INVALIDRESP;
} else if (! AUTH_UNWRAP(auth, &cm->cm_xdrs,
xresults, resultsp)) {
if (cm->cm_error.re_status == RPC_SUCCESS)
cm->cm_error.re_status = RPC_CANTDECODERES;
}
if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void) xdr_opaque_auth(xdrs,
&(reply_msg.acpted_rply.ar_verf));
}
} /* end successful completion */
/*
* If unsuccesful AND error is an authentication error
* then refresh credentials and try again, else break
*/
else if (cm->cm_error.re_status == RPC_AUTHERROR)
/* maybe our credentials need to be refreshed ... */
if (nrefreshes > 0 &&
AUTH_REFRESH(auth, &reply_msg)) {
nrefreshes--;
goto call_again;
}
/* end of unsuccessful completion */
} /* end of valid reply message */
else {
cm->cm_error.re_status = RPC_CANTDECODERES;
}
out:
cm->call_msg.rm_xid++;
// vc_fd_unlock_c(cl, &mask);
return (cm->cm_error.re_status);
}
/* ARGSUSED */
static enum clnt_stat
clnt_raw_call(CLIENT *h, AUTH *auth, rpcproc_t proc, xdrproc_t xargs,
void *argsp, xdrproc_t xresults, void *resultsp,
struct timeval timeout)
{
struct clntraw_private *clp = clntraw_private;
XDR *xdrs = &clp->xdr_stream;
struct rpc_msg msg;
enum clnt_stat status;
struct rpc_err error;
assert(h != NULL);
mutex_lock(&clntraw_lock);
if (clp == NULL) {
mutex_unlock(&clntraw_lock);
return (RPC_FAILED);
}
mutex_unlock(&clntraw_lock);
call_again:
/*
* send request
*/
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
clp->u.mashl_rpcmsg.rm_xid ++ ;
if ((! XDR_PUTBYTES(xdrs, clp->u.mashl_callmsg, clp->mcnt)) ||
(! XDR_PUTINT32(xdrs, (int32_t *)&proc)) ||
(! AUTH_MARSHALL(auth, xdrs)) ||
(! (*xargs)(xdrs, argsp))) {
return (RPC_CANTENCODEARGS);
}
(void)XDR_GETPOS(xdrs); /* called just to cause overhead */
/*
* We have to call server input routine here because this is
* all going on in one process. Yuk.
*/
svc_getreq_common(FD_SETSIZE);
/*
* get results
*/
xdrs->x_op = XDR_DECODE;
XDR_SETPOS(xdrs, 0);
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where = resultsp;
msg.acpted_rply.ar_results.proc = xresults;
if (! xdr_replymsg(xdrs, &msg)) {
/*
* It's possible for xdr_replymsg() to fail partway
* through its attempt to decode the result from the
* server. If this happens, it will leave the reply
* structure partially populated with dynamically
* allocated memory. (This can happen if someone uses
* clntudp_bufcreate() to create a CLIENT handle and
* specifies a receive buffer size that is too small.)
* This memory must be free()ed to avoid a leak.
*/
int op = xdrs->x_op;
xdrs->x_op = XDR_FREE;
xdr_replymsg(xdrs, &msg);
xdrs->x_op = op;
return (RPC_CANTDECODERES);
}
_seterr_reply(&msg, &error);
status = error.re_status;
if (status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(auth, &msg.acpted_rply.ar_verf)) {
status = RPC_AUTHERROR;
}
} /* end successful completion */
else {
if (AUTH_REFRESH(auth, &msg))
goto call_again;
} /* end of unsuccessful completion */
if (status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(auth, &msg.acpted_rply.ar_verf)) {
status = RPC_AUTHERROR;
}
if (msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf));
}
}
return (status);
}
/*
* our version of brpc_call(). We cache in portnumber in to->sin_port for
* your convenience. to and from addresses are taken and received in network
* order.
*/
enum clnt_stat
brpc_call(
rpcprog_t prog, /* rpc program number to call. */
rpcvers_t vers, /* rpc program version */
rpcproc_t proc, /* rpc procedure to call */
xdrproc_t in_xdr, /* routine to serialize arguments */
caddr_t args, /* arg vector for remote call */
xdrproc_t out_xdr, /* routine to deserialize results */
caddr_t ret, /* addr of buf to place results in */
int rexmit, /* retransmission interval (secs) */
int wait_time, /* how long (secs) to wait (resp) */
struct sockaddr_in *to, /* destination */
struct sockaddr_in *from_who, /* responder's port/address */
uint_t auth) /* type of auth wanted. */
{
int s;
char hostname[MAXHOSTNAMELEN];
struct sockaddr_in from; /* us. */
socklen_t from_len;
XDR xmit_xdrs, rcv_xdrs; /* xdr memory */
AUTH *xmit_auth; /* our chosen auth cookie */
gid_t fake_gids = 1; /* fake gids list for auth_unix */
caddr_t trm_msg, rcv_msg; /* outgoing/incoming rpc mesgs */
struct rpc_msg reply; /* our reply msg header */
int trm_len, rcv_len;
struct rpc_err rpc_error; /* to store RPC errors in on rcv. */
static uint_t xid; /* current xid */
uint_t xmit_len; /* How much of the buffer we used */
int nrefreshes = 2; /* # of times to refresh cred */
int flags = 0; /* send flags */
uint_t xdelay;
int errors, preserve_errno;
uint32_t timeout;
socklen_t optlen;
xmit_auth = NULL;
trm_len = mac_get_mtu();
trm_msg = bkmem_alloc(trm_len);
rcv_msg = bkmem_alloc(NFSBUF_SIZE);
if (trm_msg == NULL || rcv_msg == NULL) {
errno = ENOMEM;
rpc_error.re_status = RPC_CANTSEND;
goto gt_error;
}
if ((s = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
rpc_error.re_status = RPC_CANTSEND;
goto gt_error;
}
if (dontroute) {
(void) setsockopt(s, SOL_SOCKET, SO_DONTROUTE,
(const void *)&dontroute, sizeof (dontroute));
}
if (to->sin_addr.s_addr == cached_destination.s_addr) {
optlen = sizeof (timeout);
(void) getsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (void *)&timeout,
&optlen);
} else {
cached_destination.s_addr = htonl(INADDR_ANY);
}
/* Bind our endpoint. */
from.sin_family = AF_INET;
ipv4_getipaddr(&from.sin_addr);
from.sin_addr.s_addr = htonl(from.sin_addr.s_addr);
from.sin_port = get_source_port(B_TRUE);
if (bind(s, (struct sockaddr *)&from, sizeof (from)) < 0) {
rpc_error.re_status = RPC_CANTSEND;
goto gt_error;
}
bzero((caddr_t)&rpc_error, sizeof (struct rpc_err));
/* initialize reply's rpc_msg struct, so we can decode later. */
reply.acpted_rply.ar_verf = _null_auth; /* struct copy */
reply.acpted_rply.ar_results.where = ret;
reply.acpted_rply.ar_results.proc = out_xdr;
if (ntohs(to->sin_port) == 0) {
/* snag the udp port we need. */
if ((to->sin_port = (in_port_t)bpmap_getport(prog, vers,
&(rpc_error.re_status), to, NULL)) == 0)
goto gt_error;
to->sin_port = htons(to->sin_port);
}
/* generate xid - increment */
if (xid == 0)
xid = (uint_t)(prom_gettime() / 1000) + 1;
else
xid++;
/* set up outgoing pkt as xdr modified. */
xdrmem_create(&xmit_xdrs, trm_msg, trm_len, XDR_ENCODE);
/* setup rpc header */
if (rpc_hdr(&xmit_xdrs, xid, prog, vers, proc) != TRUE) {
dprintf("brpc_call: cannot setup rpc header.\n");
rpc_error.re_status = RPC_FAILED;
goto gt_error;
}
/* setup authentication */
switch (auth) {
case AUTH_NONE:
xmit_auth = authnone_create();
break;
case AUTH_UNIX:
/*
* Assumes we've configured the stack and thus know our
* IP address/hostname, either by using DHCP or rarp/bootparams.
*/
gethostname(hostname, sizeof (hostname));
xmit_auth = authunix_create(hostname, 0, 1, 1, &fake_gids);
break;
default:
dprintf("brpc_call: Unsupported authentication type: %d\n",
auth);
rpc_error.re_status = RPC_AUTHERROR;
goto gt_error;
/*NOTREACHED*/
}
/*
* rpc_hdr puts everything in the xmit buffer for the header
* EXCEPT the proc. Put it, and our authentication info into
* it now, serializing as we go. We will be at the place where
* we left off.
*/
xmit_xdrs.x_op = XDR_ENCODE;
if ((XDR_PUTINT32(&xmit_xdrs, (int32_t *)&proc) == FALSE) ||
(AUTH_MARSHALL(xmit_auth, &xmit_xdrs, NULL) == FALSE) ||
((*in_xdr)(&xmit_xdrs, args) == FALSE)) {
rpc_error.re_status = RPC_CANTENCODEARGS;
goto gt_error;
} else
xmit_len = (int)XDR_GETPOS(&xmit_xdrs); /* for sendto */
/*
* Right now the outgoing packet should be all serialized and
* ready to go... Set up timers.
*/
xdelay = (rexmit == 0) ? RPC_REXMIT_MSEC : (rexmit * 1000);
(void) setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (void *)&xdelay,
sizeof (xdelay));
wait_time = (wait_time == 0) ? RPC_RCVWAIT_MSEC : (wait_time * 1000);
wait_time += prom_gettime();
/*
* send out the request. The first item in the receive buffer will
* be the xid. Check if it is correct.
*/
errors = 0;
rpc_error.re_status = RPC_TIMEDOUT;
do {
if (sendto(s, trm_msg, xmit_len, flags, (struct sockaddr *)to,
sizeof (struct sockaddr_in)) < 0) {
/*
* If errno is set to ETIMEDOUT, return
* with RPC status as RPC_TIMEDOUT. Calling
* funciton will take care of this error by
* retrying the RPC call.
*/
if (errno == ETIMEDOUT) {
rpc_error.re_status = RPC_TIMEDOUT;
} else {
rpc_error.re_status = RPC_CANTSEND;
}
goto gt_error;
}
from_len = sizeof (struct sockaddr_in);
while ((rcv_len = recvfrom(s, rcv_msg, NFSBUF_SIZE,
MSG_DONTWAIT, (struct sockaddr *)from_who,
&from_len)) > 0 || errors < RPC_ALLOWABLE_ERRORS) {
if (rcv_len < 0) {
if (errno == EWOULDBLOCK ||
errno == ETIMEDOUT) {
break; /* timeout */
}
rpc_error.re_status = RPC_CANTRECV;
goto gt_error;
}
if (ntohl(*((uint32_t *)(rcv_msg))) != xid) {
dprintf("brpc_call: xid: 0x%x != 0x%x\n",
*(uint32_t *)(rcv_msg), xid);
continue;
}
/*
* Let's deserialize the data into our 'ret' buffer.
*/
xdrmem_create(&rcv_xdrs, rcv_msg, rcv_len, XDR_DECODE);
if (xdr_replymsg(&rcv_xdrs, &reply) == FALSE) {
rpc_error.re_status = RPC_CANTDECODERES;
goto gt_error;
}
_seterr_reply(&reply, &rpc_error);
switch (rpc_error.re_status) {
case RPC_SUCCESS:
/*
* XXX - validate for unix and none
* always return true.
*/
if (AUTH_VALIDATE(xmit_auth,
&reply.acpted_rply.ar_verf) == FALSE) {
rpc_error.re_status = RPC_AUTHERROR;
rpc_error.re_why = AUTH_INVALIDRESP;
errors++;
}
if (reply.acpted_rply.ar_verf.oa_base !=
0) {
xmit_xdrs.x_op = XDR_FREE;
(void) xdr_opaque_auth(
&xmit_xdrs,
&reply.acpted_rply.ar_verf);
}
break;
case RPC_AUTHERROR:
/*
* Let's see if our credentials need
* refreshing
*/
if (nrefreshes > 0 && AUTH_REFRESH(xmit_auth,
NULL, NULL)) {
nrefreshes--;
}
errors++;
break;
case RPC_PROCUNAVAIL:
/*
* Might be a silly portmapper implementation
* erroneously responding to our rpc broadcast
* indirect portmapper call. For this
* particular case, we don't increment the
* error counter because we want to keep
* sifting for successful replies...
*/
if (to->sin_addr.s_addr !=
ntohl(INADDR_BROADCAST))
errors++;
break;
case RPC_PROGVERSMISMATCH:
/*
* Successfully talked to server, but they
* don't speak our lingo.
*/
goto gt_error;
default:
/* Just keep trying till there's no data... */
errors++;
break;
}
if (rpc_error.re_status != RPC_SUCCESS) {
dprintf("brpc_call: from: %s, error: ",
inet_ntoa(from_who->sin_addr));
rpc_disperr(&rpc_error);
} else
break;
}
/*
* If we're having trouble reassembling datagrams, let the
* application know ASAP so that it can take the appropriate
* actions.
*/
} while (rpc_error.re_status != RPC_SUCCESS && errno != ETIMEDOUT &&
prom_gettime() < wait_time);
gt_error:
if (xmit_auth != NULL)
AUTH_DESTROY(xmit_auth);
if (trm_msg != NULL)
bkmem_free(trm_msg, trm_len);
if (rcv_msg != NULL)
bkmem_free(rcv_msg, NFSBUF_SIZE);
if (rpc_error.re_status != RPC_SUCCESS)
rpc_disperr(&rpc_error);
/*
* socket calls reset errno. Since we want to hold onto the errno
* value if it is ETIMEDOUT to communicate to our caller that this
* RPC_TIMEDOUT situation is due to a stack problem (we're getting
* a reply, but the stack simply can't assemble it.), we need to
* preserve errno's value over the socket_close().
*/
preserve_errno = (errno == ETIMEDOUT) ? errno : 0;
(void) socket_close(s);
errno = preserve_errno;
return (rpc_error.re_status);
}
/* ARGSUSED */
static enum clnt_stat
clnt_rdma_kcallit(CLIENT *h, rpcproc_t procnum, xdrproc_t xdr_args,
caddr_t argsp, xdrproc_t xdr_results, caddr_t resultsp,
struct timeval wait)
{
cku_private_t *p = htop(h);
int try_call_again;
int refresh_attempt = AUTH_REFRESH_COUNT;
int status;
int msglen;
XDR *call_xdrp, callxdr; /* for xdrrdma encoding the RPC call */
XDR *reply_xdrp, replyxdr; /* for xdrrdma decoding the RPC reply */
XDR *rdmahdr_o_xdrs, *rdmahdr_i_xdrs;
struct rpc_msg reply_msg;
rdma_registry_t *m;
struct clist *cl_sendlist;
struct clist *cl_recvlist;
struct clist *cl;
struct clist *cl_rpcmsg;
struct clist *cl_rdma_reply;
struct clist *cl_rpcreply_wlist;
struct clist *cl_long_reply;
rdma_buf_t rndup;
uint_t vers;
uint_t op;
uint_t off;
uint32_t seg_array_len;
uint_t long_reply_len;
uint_t rpcsec_gss;
uint_t gss_i_or_p;
CONN *conn = NULL;
rdma_buf_t clmsg;
rdma_buf_t rpcmsg;
rdma_chunkinfo_lengths_t rcil;
clock_t ticks;
bool_t wlist_exists_reply;
uint32_t rdma_credit = rdma_bufs_rqst;
RCSTAT_INCR(rccalls);
call_again:
bzero(&clmsg, sizeof (clmsg));
bzero(&rpcmsg, sizeof (rpcmsg));
bzero(&rndup, sizeof (rndup));
try_call_again = 0;
cl_sendlist = NULL;
cl_recvlist = NULL;
cl = NULL;
cl_rpcmsg = NULL;
cl_rdma_reply = NULL;
call_xdrp = NULL;
reply_xdrp = NULL;
wlist_exists_reply = FALSE;
cl_rpcreply_wlist = NULL;
cl_long_reply = NULL;
rcil.rcil_len = 0;
rcil.rcil_len_alt = 0;
long_reply_len = 0;
rw_enter(&rdma_lock, RW_READER);
m = (rdma_registry_t *)p->cku_rd_handle;
if (m->r_mod_state == RDMA_MOD_INACTIVE) {
/*
* If we didn't find a matching RDMA module in the registry
* then there is no transport.
*/
rw_exit(&rdma_lock);
p->cku_err.re_status = RPC_CANTSEND;
p->cku_err.re_errno = EIO;
ticks = clnt_rdma_min_delay * drv_usectohz(1000000);
if (h->cl_nosignal == TRUE) {
delay(ticks);
} else {
if (delay_sig(ticks) == EINTR) {
p->cku_err.re_status = RPC_INTR;
p->cku_err.re_errno = EINTR;
}
}
return (RPC_CANTSEND);
}
/*
* Get unique xid
*/
if (p->cku_xid == 0)
p->cku_xid = alloc_xid();
status = RDMA_GET_CONN(p->cku_rd_mod->rdma_ops, &p->cku_srcaddr,
&p->cku_addr, p->cku_addrfmly, p->cku_rd_handle, &conn);
rw_exit(&rdma_lock);
/*
* If there is a problem with the connection reflect the issue
* back to the higher level to address, we MAY delay for a short
* period so that we are kind to the transport.
*/
if (conn == NULL) {
/*
* Connect failed to server. Could be because of one
* of several things. In some cases we don't want
* the caller to retry immediately - delay before
* returning to caller.
*/
switch (status) {
case RDMA_TIMEDOUT:
/*
* Already timed out. No need to delay
* some more.
*/
p->cku_err.re_status = RPC_TIMEDOUT;
p->cku_err.re_errno = ETIMEDOUT;
break;
case RDMA_INTR:
/*
* Failed because of an signal. Very likely
* the caller will not retry.
*/
p->cku_err.re_status = RPC_INTR;
p->cku_err.re_errno = EINTR;
break;
default:
/*
* All other failures - server down or service
* down or temporary resource failure. Delay before
* returning to caller.
*/
ticks = clnt_rdma_min_delay * drv_usectohz(1000000);
p->cku_err.re_status = RPC_CANTCONNECT;
p->cku_err.re_errno = EIO;
if (h->cl_nosignal == TRUE) {
delay(ticks);
} else {
if (delay_sig(ticks) == EINTR) {
p->cku_err.re_status = RPC_INTR;
p->cku_err.re_errno = EINTR;
}
}
break;
}
return (p->cku_err.re_status);
}
if (p->cku_srcaddr.maxlen < conn->c_laddr.len) {
if ((p->cku_srcaddr.maxlen != 0) &&
(p->cku_srcaddr.buf != NULL))
kmem_free(p->cku_srcaddr.buf, p->cku_srcaddr.maxlen);
p->cku_srcaddr.buf = kmem_zalloc(conn->c_laddr.maxlen,
KM_SLEEP);
p->cku_srcaddr.maxlen = conn->c_laddr.maxlen;
}
p->cku_srcaddr.len = conn->c_laddr.len;
bcopy(conn->c_laddr.buf, p->cku_srcaddr.buf, conn->c_laddr.len);
clnt_check_credit(conn);
status = CLNT_RDMA_FAIL;
rpcsec_gss = gss_i_or_p = FALSE;
if (IS_RPCSEC_GSS(h)) {
rpcsec_gss = TRUE;
if (rpc_gss_get_service_type(h->cl_auth) ==
rpc_gss_svc_integrity ||
rpc_gss_get_service_type(h->cl_auth) ==
rpc_gss_svc_privacy)
gss_i_or_p = TRUE;
}
/*
* Try a regular RDMA message if RPCSEC_GSS is not being used
* or if RPCSEC_GSS is being used for authentication only.
*/
if (rpcsec_gss == FALSE ||
(rpcsec_gss == TRUE && gss_i_or_p == FALSE)) {
/*
* Grab a send buffer for the request. Try to
* encode it to see if it fits. If not, then it
* needs to be sent in a chunk.
*/
rpcmsg.type = SEND_BUFFER;
if (rdma_buf_alloc(conn, &rpcmsg)) {
DTRACE_PROBE(krpc__e__clntrdma__callit_nobufs);
goto done;
}
/* First try to encode into regular send buffer */
op = RDMA_MSG;
call_xdrp = &callxdr;
xdrrdma_create(call_xdrp, rpcmsg.addr, rpcmsg.len,
rdma_minchunk, NULL, XDR_ENCODE, conn);
status = clnt_compose_rpcmsg(h, procnum, &rpcmsg, call_xdrp,
xdr_args, argsp);
if (status != CLNT_RDMA_SUCCESS) {
/* Clean up from previous encode attempt */
rdma_buf_free(conn, &rpcmsg);
XDR_DESTROY(call_xdrp);
} else {
XDR_CONTROL(call_xdrp, XDR_RDMA_GET_CHUNK_LEN, &rcil);
}
}
/* If the encode didn't work, then try a NOMSG */
if (status != CLNT_RDMA_SUCCESS) {
msglen = CKU_HDRSIZE + BYTES_PER_XDR_UNIT + MAX_AUTH_BYTES +
xdr_sizeof(xdr_args, argsp);
msglen = calc_length(msglen);
/* pick up the lengths for the reply buffer needed */
(void) xdrrdma_sizeof(xdr_args, argsp, 0,
&rcil.rcil_len, &rcil.rcil_len_alt);
/*
* Construct a clist to describe the CHUNK_BUFFER
* for the rpcmsg.
*/
cl_rpcmsg = clist_alloc();
cl_rpcmsg->c_len = msglen;
cl_rpcmsg->rb_longbuf.type = RDMA_LONG_BUFFER;
cl_rpcmsg->rb_longbuf.len = msglen;
if (rdma_buf_alloc(conn, &cl_rpcmsg->rb_longbuf)) {
clist_free(cl_rpcmsg);
goto done;
}
cl_rpcmsg->w.c_saddr3 = cl_rpcmsg->rb_longbuf.addr;
op = RDMA_NOMSG;
call_xdrp = &callxdr;
xdrrdma_create(call_xdrp, cl_rpcmsg->rb_longbuf.addr,
cl_rpcmsg->rb_longbuf.len, 0,
cl_rpcmsg, XDR_ENCODE, conn);
status = clnt_compose_rpcmsg(h, procnum, &rpcmsg, call_xdrp,
xdr_args, argsp);
if (status != CLNT_RDMA_SUCCESS) {
p->cku_err.re_status = RPC_CANTENCODEARGS;
p->cku_err.re_errno = EIO;
DTRACE_PROBE(krpc__e__clntrdma__callit__composemsg);
goto done;
}
}
/*
* During the XDR_ENCODE we may have "allocated" an RDMA READ or
* RDMA WRITE clist.
*
* First pull the RDMA READ chunk list from the XDR private
* area to keep it handy.
*/
XDR_CONTROL(call_xdrp, XDR_RDMA_GET_RLIST, &cl);
if (gss_i_or_p) {
long_reply_len = rcil.rcil_len + rcil.rcil_len_alt;
long_reply_len += MAX_AUTH_BYTES;
} else {
long_reply_len = rcil.rcil_len;
}
/*
* Update the chunk size information for the Long RPC msg.
*/
if (cl && op == RDMA_NOMSG)
cl->c_len = p->cku_outsz;
/*
* Prepare the RDMA header. On success xdrs will hold the result
* of xdrmem_create() for a SEND_BUFFER.
*/
status = clnt_compose_rdma_header(conn, h, &clmsg,
&rdmahdr_o_xdrs, &op);
if (status != CLNT_RDMA_SUCCESS) {
p->cku_err.re_status = RPC_CANTSEND;
p->cku_err.re_errno = EIO;
RCSTAT_INCR(rcnomem);
DTRACE_PROBE(krpc__e__clntrdma__callit__nobufs2);
goto done;
}
/*
* Now insert the RDMA READ list iff present
*/
status = clnt_setup_rlist(conn, rdmahdr_o_xdrs, call_xdrp);
if (status != CLNT_RDMA_SUCCESS) {
DTRACE_PROBE(krpc__e__clntrdma__callit__clistreg);
rdma_buf_free(conn, &clmsg);
p->cku_err.re_status = RPC_CANTSEND;
p->cku_err.re_errno = EIO;
goto done;
}
/*
* Setup RDMA WRITE chunk list for nfs read operation
* other operations will have a NULL which will result
* as a NULL list in the XDR stream.
*/
status = clnt_setup_wlist(conn, rdmahdr_o_xdrs, call_xdrp, &rndup);
if (status != CLNT_RDMA_SUCCESS) {
rdma_buf_free(conn, &clmsg);
p->cku_err.re_status = RPC_CANTSEND;
p->cku_err.re_errno = EIO;
goto done;
}
/*
* If NULL call and RPCSEC_GSS, provide a chunk such that
* large responses can flow back to the client.
* If RPCSEC_GSS with integrity or privacy is in use, get chunk.
*/
if ((procnum == 0 && rpcsec_gss == TRUE) ||
(rpcsec_gss == TRUE && gss_i_or_p == TRUE))
long_reply_len += 1024;
status = clnt_setup_long_reply(conn, &cl_long_reply, long_reply_len);
if (status != CLNT_RDMA_SUCCESS) {
rdma_buf_free(conn, &clmsg);
p->cku_err.re_status = RPC_CANTSEND;
p->cku_err.re_errno = EIO;
goto done;
}
/*
* XDR encode the RDMA_REPLY write chunk
*/
seg_array_len = (cl_long_reply ? 1 : 0);
(void) xdr_encode_reply_wchunk(rdmahdr_o_xdrs, cl_long_reply,
seg_array_len);
/*
* Construct a clist in "sendlist" that represents what we
* will push over the wire.
*
* Start with the RDMA header and clist (if any)
*/
clist_add(&cl_sendlist, 0, XDR_GETPOS(rdmahdr_o_xdrs), &clmsg.handle,
clmsg.addr, NULL, NULL);
/*
* Put the RPC call message in sendlist if small RPC
*/
if (op == RDMA_MSG) {
clist_add(&cl_sendlist, 0, p->cku_outsz, &rpcmsg.handle,
rpcmsg.addr, NULL, NULL);
} else {
/* Long RPC already in chunk list */
RCSTAT_INCR(rclongrpcs);
}
/*
* Set up a reply buffer ready for the reply
*/
status = rdma_clnt_postrecv(conn, p->cku_xid);
if (status != RDMA_SUCCESS) {
rdma_buf_free(conn, &clmsg);
p->cku_err.re_status = RPC_CANTSEND;
p->cku_err.re_errno = EIO;
goto done;
}
/*
* sync the memory for dma
*/
if (cl != NULL) {
status = clist_syncmem(conn, cl, CLIST_REG_SOURCE);
if (status != RDMA_SUCCESS) {
(void) rdma_clnt_postrecv_remove(conn, p->cku_xid);
rdma_buf_free(conn, &clmsg);
p->cku_err.re_status = RPC_CANTSEND;
p->cku_err.re_errno = EIO;
goto done;
}
}
/*
* Send the RDMA Header and RPC call message to the server
*/
status = RDMA_SEND(conn, cl_sendlist, p->cku_xid);
if (status != RDMA_SUCCESS) {
(void) rdma_clnt_postrecv_remove(conn, p->cku_xid);
p->cku_err.re_status = RPC_CANTSEND;
p->cku_err.re_errno = EIO;
goto done;
}
/*
* RDMA plugin now owns the send msg buffers.
* Clear them out and don't free them.
*/
clmsg.addr = NULL;
if (rpcmsg.type == SEND_BUFFER)
rpcmsg.addr = NULL;
/*
* Recv rpc reply
*/
status = RDMA_RECV(conn, &cl_recvlist, p->cku_xid);
/*
* Now check recv status
*/
if (status != 0) {
if (status == RDMA_INTR) {
p->cku_err.re_status = RPC_INTR;
p->cku_err.re_errno = EINTR;
RCSTAT_INCR(rcintrs);
} else if (status == RPC_TIMEDOUT) {
p->cku_err.re_status = RPC_TIMEDOUT;
p->cku_err.re_errno = ETIMEDOUT;
RCSTAT_INCR(rctimeouts);
} else {
p->cku_err.re_status = RPC_CANTRECV;
p->cku_err.re_errno = EIO;
}
goto done;
}
/*
* Process the reply message.
*
* First the chunk list (if any)
*/
rdmahdr_i_xdrs = &(p->cku_inxdr);
xdrmem_create(rdmahdr_i_xdrs,
(caddr_t)(uintptr_t)cl_recvlist->w.c_saddr3,
cl_recvlist->c_len, XDR_DECODE);
/*
* Treat xid as opaque (xid is the first entity
* in the rpc rdma message).
* Skip xid and set the xdr position accordingly.
*/
XDR_SETPOS(rdmahdr_i_xdrs, sizeof (uint32_t));
(void) xdr_u_int(rdmahdr_i_xdrs, &vers);
(void) xdr_u_int(rdmahdr_i_xdrs, &rdma_credit);
(void) xdr_u_int(rdmahdr_i_xdrs, &op);
(void) xdr_do_clist(rdmahdr_i_xdrs, &cl);
clnt_update_credit(conn, rdma_credit);
wlist_exists_reply = FALSE;
if (! xdr_decode_wlist(rdmahdr_i_xdrs, &cl_rpcreply_wlist,
&wlist_exists_reply)) {
DTRACE_PROBE(krpc__e__clntrdma__callit__wlist_decode);
p->cku_err.re_status = RPC_CANTDECODERES;
p->cku_err.re_errno = EIO;
goto done;
}
/*
* The server shouldn't have sent a RDMA_SEND that
* the client needs to RDMA_WRITE a reply back to
* the server. So silently ignoring what the
* server returns in the rdma_reply section of the
* header.
*/
(void) xdr_decode_reply_wchunk(rdmahdr_i_xdrs, &cl_rdma_reply);
off = xdr_getpos(rdmahdr_i_xdrs);
clnt_decode_long_reply(conn, cl_long_reply,
cl_rdma_reply, &replyxdr, &reply_xdrp,
cl, cl_recvlist, op, off);
if (reply_xdrp == NULL)
goto done;
if (wlist_exists_reply) {
XDR_CONTROL(reply_xdrp, XDR_RDMA_SET_WLIST, cl_rpcreply_wlist);
}
reply_msg.rm_direction = REPLY;
reply_msg.rm_reply.rp_stat = MSG_ACCEPTED;
reply_msg.acpted_rply.ar_stat = SUCCESS;
reply_msg.acpted_rply.ar_verf = _null_auth;
/*
* xdr_results will be done in AUTH_UNWRAP.
*/
reply_msg.acpted_rply.ar_results.where = NULL;
reply_msg.acpted_rply.ar_results.proc = xdr_void;
/*
* Decode and validate the response.
*/
if (xdr_replymsg(reply_xdrp, &reply_msg)) {
enum clnt_stat re_status;
_seterr_reply(&reply_msg, &(p->cku_err));
re_status = p->cku_err.re_status;
if (re_status == RPC_SUCCESS) {
/*
* Reply is good, check auth.
*/
if (!AUTH_VALIDATE(h->cl_auth,
&reply_msg.acpted_rply.ar_verf)) {
p->cku_err.re_status = RPC_AUTHERROR;
p->cku_err.re_why = AUTH_INVALIDRESP;
RCSTAT_INCR(rcbadverfs);
DTRACE_PROBE(
krpc__e__clntrdma__callit__authvalidate);
} else if (!AUTH_UNWRAP(h->cl_auth, reply_xdrp,
xdr_results, resultsp)) {
p->cku_err.re_status = RPC_CANTDECODERES;
p->cku_err.re_errno = EIO;
DTRACE_PROBE(
krpc__e__clntrdma__callit__authunwrap);
}
} else {
/* set errno in case we can't recover */
if (re_status != RPC_VERSMISMATCH &&
re_status != RPC_AUTHERROR &&
re_status != RPC_PROGVERSMISMATCH)
p->cku_err.re_errno = EIO;
if (re_status == RPC_AUTHERROR) {
if ((refresh_attempt > 0) &&
AUTH_REFRESH(h->cl_auth, &reply_msg,
p->cku_cred)) {
refresh_attempt--;
try_call_again = 1;
goto done;
}
try_call_again = 0;
/*
* We have used the client handle to
* do an AUTH_REFRESH and the RPC status may
* be set to RPC_SUCCESS; Let's make sure to
* set it to RPC_AUTHERROR.
*/
p->cku_err.re_status = RPC_AUTHERROR;
/*
* Map recoverable and unrecoverable
* authentication errors to appropriate
* errno
*/
switch (p->cku_err.re_why) {
case AUTH_BADCRED:
case AUTH_BADVERF:
case AUTH_INVALIDRESP:
case AUTH_TOOWEAK:
case AUTH_FAILED:
case RPCSEC_GSS_NOCRED:
case RPCSEC_GSS_FAILED:
p->cku_err.re_errno = EACCES;
break;
case AUTH_REJECTEDCRED:
case AUTH_REJECTEDVERF:
default:
p->cku_err.re_errno = EIO;
break;
}
}
DTRACE_PROBE1(krpc__e__clntrdma__callit__rpcfailed,
int, p->cku_err.re_why);
}
} else {
static enum clnt_stat
clntraw_call (CLIENT *h, u_long proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp, struct timeval timeout)
{
struct clntraw_private_s *clp = clntraw_private;
XDR *xdrs = &clp->xdr_stream;
struct rpc_msg msg;
enum clnt_stat status;
struct rpc_err error;
if (clp == NULL)
return RPC_FAILED;
call_again:
/*
* send request
*/
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS (xdrs, 0);
/* Just checking the union definition to access rm_xid is correct. */
if (offsetof (struct rpc_msg, rm_xid) != 0)
abort ();
clp->mashl_callmsg.rm_xid++;
if ((!XDR_PUTBYTES (xdrs, clp->mashl_callmsg.msg, clp->mcnt)) ||
(!XDR_PUTLONG (xdrs, (long *) &proc)) ||
(!AUTH_MARSHALL (h->cl_auth, xdrs)) ||
(!(*xargs) (xdrs, argsp)))
{
return (RPC_CANTENCODEARGS);
}
(void) XDR_GETPOS (xdrs); /* called just to cause overhead */
/*
* We have to call server input routine here because this is
* all going on in one process. Yuk.
*/
svc_getreq (1);
/*
* get results
*/
xdrs->x_op = XDR_DECODE;
XDR_SETPOS (xdrs, 0);
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where = resultsp;
msg.acpted_rply.ar_results.proc = xresults;
if (!xdr_replymsg (xdrs, &msg))
return RPC_CANTDECODERES;
_seterr_reply (&msg, &error);
status = error.re_status;
if (status == RPC_SUCCESS)
{
if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf))
{
status = RPC_AUTHERROR;
}
} /* end successful completion */
else
{
if (AUTH_REFRESH (h->cl_auth))
goto call_again;
} /* end of unsuccessful completion */
if (status == RPC_SUCCESS)
{
if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf))
{
status = RPC_AUTHERROR;
}
if (msg.acpted_rply.ar_verf.oa_base != NULL)
{
xdrs->x_op = XDR_FREE;
(void) xdr_opaque_auth (xdrs, &(msg.acpted_rply.ar_verf));
}
}
return status;
}
/*ARGSUSED*/
static enum clnt_stat
clnt_raw_call(CLIENT *h, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp, struct timeval timeout)
{
struct clnt_raw_private *clp;
XDR xdrs;
struct rpc_msg msg;
uint_t start;
rpc_callerr.re_errno = 0;
rpc_callerr.re_terrno = 0;
(void) mutex_lock(&clntraw_lock);
clp = clnt_raw_private;
if (clp == NULL) {
(void) mutex_unlock(&clntraw_lock);
return (rpc_callerr.re_status = RPC_FAILED);
}
(void) mutex_unlock(&clntraw_lock);
call_again:
/*
* send request
*/
xdrmem_create(&xdrs, clp->raw_netbuf->buf, clp->raw_netbuf->maxlen,
XDR_ENCODE);
start = XDR_GETPOS(&xdrs);
/* LINTED pointer alignment */
((struct rpc_msg *)clp->mashl_callmsg)->rm_xid++;
if ((!XDR_PUTBYTES(&xdrs, clp->mashl_callmsg, clp->mcnt)) ||
(!XDR_PUTINT32(&xdrs, (int32_t *)&proc)) ||
(!AUTH_MARSHALL(h->cl_auth, &xdrs)) ||
(!(*xargs)(&xdrs, argsp))) {
XDR_DESTROY(&xdrs);
return (rpc_callerr.re_status = RPC_CANTENCODEARGS);
}
clp->raw_netbuf->len = XDR_GETPOS(&xdrs) - start;
XDR_DESTROY(&xdrs);
/*
* We have to call server input routine here because this is
* all going on in one process.
* By convention using FD_SETSIZE as the pseudo file descriptor.
*/
svc_getreq_common(FD_SETSIZE);
/*
* get results
*/
xdrmem_create(&xdrs, clp->raw_netbuf->buf, clp->raw_netbuf->len,
XDR_DECODE);
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where = resultsp;
msg.acpted_rply.ar_results.proc = xresults;
if (!xdr_replymsg(&xdrs, &msg)) {
XDR_DESTROY(&xdrs);
return (rpc_callerr.re_status = RPC_CANTDECODERES);
}
XDR_DESTROY(&xdrs);
if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(msg.acpted_rply.ar_stat == SUCCESS))
rpc_callerr.re_status = RPC_SUCCESS;
else
__seterr_reply(&msg, &rpc_callerr);
if (rpc_callerr.re_status == RPC_SUCCESS) {
if (!AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
rpc_callerr.re_status = RPC_AUTHERROR;
rpc_callerr.re_why = AUTH_INVALIDRESP;
}
if (msg.acpted_rply.ar_verf.oa_base != NULL) {
xdr_free(xdr_opaque_auth,
(char *)&(msg.acpted_rply.ar_verf));
}
/* end successful completion */
} else {
if (AUTH_REFRESH(h->cl_auth, &msg))
goto call_again;
/* end of unsuccessful completion */
}
return (rpc_callerr.re_status);
}
static enum clnt_stat
clnttcp_call(
CLIENT *h,
rpcproc_t proc,
xdrproc_t xdr_args,
void * args_ptr,
xdrproc_t xdr_results,
void * results_ptr,
struct timeval timeout)
{
struct ct_data *ct = h->cl_private;
XDR *xdrs = &ct->ct_xdrs;
struct rpc_msg reply_msg;
uint32_t x_id;
uint32_t *msg_x_id = &ct->ct_u.ct_mcalli; /* yuk */
bool_t shipnow;
int refreshes = 2;
long procl = proc;
if (!ct->ct_waitset) {
ct->ct_wait = timeout;
}
shipnow =
(xdr_results == (xdrproc_t)0 && timeout.tv_sec == 0
&& timeout.tv_usec == 0) ? FALSE : TRUE;
call_again:
xdrs->x_op = XDR_ENCODE;
ct->ct_error.re_status = RPC_SUCCESS;
x_id = ntohl(--(*msg_x_id));
if ((! XDR_PUTBYTES(xdrs, ct->ct_u.ct_mcall, ct->ct_mpos)) ||
(! XDR_PUTLONG(xdrs, &procl)) ||
(! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
(! AUTH_WRAP(h->cl_auth, xdrs, xdr_args, args_ptr))) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status = RPC_CANTENCODEARGS;
(void)xdrrec_endofrecord(xdrs, TRUE);
return (ct->ct_error.re_status);
}
if (! xdrrec_endofrecord(xdrs, shipnow))
return (ct->ct_error.re_status = RPC_CANTSEND);
if (! shipnow)
return (RPC_SUCCESS);
/*
* Hack to provide rpc-based message passing
*/
if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
return(ct->ct_error.re_status = RPC_TIMEDOUT);
}
/*
* Keep receiving until we get a valid transaction id
*/
xdrs->x_op = XDR_DECODE;
while (TRUE) {
reply_msg.acpted_rply.ar_verf = gssrpc__null_auth;
reply_msg.acpted_rply.ar_results.where = NULL;
reply_msg.acpted_rply.ar_results.proc = xdr_void;
if (! xdrrec_skiprecord(xdrs))
return (ct->ct_error.re_status);
/* now decode and validate the response header */
if (! xdr_replymsg(xdrs, &reply_msg)) {
/*
* Free some stuff allocated by xdr_replymsg()
* to avoid leaks, since it may allocate
* memory from partially successful decodes.
*/
enum xdr_op op = xdrs->x_op;
xdrs->x_op = XDR_FREE;
xdr_replymsg(xdrs, &reply_msg);
xdrs->x_op = op;
if (ct->ct_error.re_status == RPC_SUCCESS)
continue;
return (ct->ct_error.re_status);
}
if (reply_msg.rm_xid == x_id)
break;
}
/*
* process header
*/
gssrpc__seterr_reply(&reply_msg, &(ct->ct_error));
if (ct->ct_error.re_status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(h->cl_auth, &reply_msg.acpted_rply.ar_verf)) {
ct->ct_error.re_status = RPC_AUTHERROR;
ct->ct_error.re_why = AUTH_INVALIDRESP;
} else if (! AUTH_UNWRAP(h->cl_auth, xdrs,
xdr_results, results_ptr)) {
if (ct->ct_error.re_status == RPC_SUCCESS)
ct->ct_error.re_status = RPC_CANTDECODERES;
}
} /* end successful completion */
else {
/* maybe our credentials need to be refreshed ... */
if (refreshes-- && AUTH_REFRESH(h->cl_auth, &reply_msg))
goto call_again;
} /* end of unsuccessful completion */
/* free verifier ... */
if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
(reply_msg.acpted_rply.ar_verf.oa_base != NULL)) {
xdrs->x_op = XDR_FREE;
(void)xdr_opaque_auth(xdrs, &(reply_msg.acpted_rply.ar_verf));
}
return (ct->ct_error.re_status);
}
