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 int
clnt_compose_rpcmsg(CLIENT *h, rpcproc_t procnum,
rdma_buf_t *rpcmsg, XDR *xdrs,
xdrproc_t xdr_args, caddr_t argsp)
{
cku_private_t *p = htop(h);
if (h->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
/*
* Copy in the preserialized RPC header
* information.
*/
bcopy(p->cku_rpchdr, rpcmsg->addr, CKU_HDRSIZE);
/*
* transaction id is the 1st thing in the output
* buffer.
*/
/* LINTED pointer alignment */
(*(uint32_t *)(rpcmsg->addr)) = p->cku_xid;
/* Skip the preserialized stuff. */
XDR_SETPOS(xdrs, CKU_HDRSIZE);
/* Serialize dynamic stuff into the output buffer. */
if ((!XDR_PUTINT32(xdrs, (int32_t *)&procnum)) ||
(!AUTH_MARSHALL(h->cl_auth, xdrs, p->cku_cred)) ||
(!(*xdr_args)(xdrs, argsp))) {
DTRACE_PROBE(krpc__e__clntrdma__rpcmsg__dynargs);
return (CLNT_RDMA_FAIL);
}
p->cku_outsz = XDR_GETPOS(xdrs);
} else {
uint32_t *uproc = (uint32_t *)&p->cku_rpchdr[CKU_HDRSIZE];
IXDR_PUT_U_INT32(uproc, procnum);
(*(uint32_t *)(&p->cku_rpchdr[0])) = p->cku_xid;
XDR_SETPOS(xdrs, 0);
/* Serialize the procedure number and the arguments. */
if (!AUTH_WRAP(h->cl_auth, (caddr_t)p->cku_rpchdr,
CKU_HDRSIZE+4, xdrs, xdr_args, argsp)) {
if (rpcmsg->addr != xdrs->x_base) {
rpcmsg->addr = xdrs->x_base;
rpcmsg->len = xdr_getbufsize(xdrs);
}
DTRACE_PROBE(krpc__e__clntrdma__rpcmsg__procnum);
return (CLNT_RDMA_FAIL);
}
/*
* If we had to allocate a new buffer while encoding
* then update the addr and len.
*/
if (rpcmsg->addr != xdrs->x_base) {
rpcmsg->addr = xdrs->x_base;
rpcmsg->len = xdr_getbufsize(xdrs);
}
p->cku_outsz = XDR_GETPOS(xdrs);
DTRACE_PROBE1(krpc__i__compose__size__sec, int, p->cku_outsz)
}
return (CLNT_RDMA_SUCCESS);
}
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);
}
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);
}