1 /* $NetBSD: clnt_vc.c,v 1.4 2000/07/14 08:40:42 fvdl Exp $ */
4 * Copyright (c) 2009, Sun Microsystems, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * - Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 * - Neither the name of Sun Microsystems, Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
31 #if defined(LIBC_SCCS) && !defined(lint)
32 static char *sccsid2 = "@(#)clnt_tcp.c 1.37 87/10/05 Copyr 1984 Sun Micro";
33 static char *sccsid = "@(#)clnt_tcp.c 2.2 88/08/01 4.0 RPCSRC";
34 static char sccsid3[] = "@(#)clnt_vc.c 1.19 89/03/16 Copyr 1988 Sun Micro";
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
40 * clnt_tcp.c, Implements a TCP/IP based, client side RPC.
42 * Copyright (C) 1984, Sun Microsystems, Inc.
44 * TCP based RPC supports 'batched calls'.
45 * A sequence of calls may be batched-up in a send buffer. The rpc call
46 * return immediately to the client even though the call was not necessarily
47 * sent. The batching occurs if the results' xdr routine is NULL (0) AND
48 * the rpc timeout value is zero (see clnt.h, rpc).
50 * Clients should NOT casually batch calls that in fact return results; that is,
51 * the server side should be aware that a call is batched and not produce any
52 * return message. Batched calls that produce many result messages can
53 * deadlock (netlock) the client and the server....
55 * Now go hang yourself.
58 #include "namespace.h"
59 #include "reentrant.h"
60 #include <sys/types.h>
62 #include <sys/syslog.h>
63 #include <sys/socket.h>
67 #include <arpa/inet.h>
79 #include <rpc/rpcsec_gss.h>
80 #include "un-namespace.h"
84 #define MCALL_MSG_SIZE 24
88 struct cmsgcred cmcred;
91 static enum clnt_stat clnt_vc_call(CLIENT *, rpcproc_t, xdrproc_t, void *,
92 xdrproc_t, void *, struct timeval);
93 static void clnt_vc_geterr(CLIENT *, struct rpc_err *);
94 static bool_t clnt_vc_freeres(CLIENT *, xdrproc_t, void *);
95 static void clnt_vc_abort(CLIENT *);
96 static bool_t clnt_vc_control(CLIENT *, u_int, void *);
97 static void clnt_vc_destroy(CLIENT *);
98 static struct clnt_ops *clnt_vc_ops(void);
99 static bool_t time_not_ok(struct timeval *);
100 static int read_vc(void *, void *, int);
101 static int write_vc(void *, void *, int);
102 static int __msgwrite(int, void *, size_t);
103 static int __msgread(int, void *, size_t);
106 int ct_fd; /* connection's fd */
107 bool_t ct_closeit; /* close it on destroy */
108 struct timeval ct_wait; /* wait interval in milliseconds */
109 bool_t ct_waitset; /* wait set by clnt_control? */
110 struct netbuf ct_addr; /* remote addr */
111 struct rpc_err ct_error;
113 char ct_mcallc[MCALL_MSG_SIZE]; /* marshalled callmsg */
116 u_int ct_mpos; /* pos after marshal */
117 XDR ct_xdrs; /* XDR stream */
121 * This machinery implements per-fd locks for MT-safety. It is not
122 * sufficient to do per-CLIENT handle locks for MT-safety because a
123 * user may create more than one CLIENT handle with the same fd behind
124 * it. Therfore, we allocate an array of flags (vc_fd_locks), protected
125 * by the clnt_fd_lock mutex, and an array (vc_cv) of condition variables
126 * similarly protected. Vc_fd_lock[fd] == 1 => a call is activte on some
127 * CLIENT handle created for that fd.
128 * The current implementation holds locks across the entire RPC and reply.
129 * Yes, this is silly, and as soon as this code is proven to work, this
130 * should be the first thing fixed. One step at a time.
132 static int *vc_fd_locks;
133 static cond_t *vc_cv;
134 #define release_fd_lock(fd, mask) { \
135 mutex_lock(&clnt_fd_lock); \
136 vc_fd_locks[fd] = 0; \
137 mutex_unlock(&clnt_fd_lock); \
138 thr_sigsetmask(SIG_SETMASK, &(mask), (sigset_t *) NULL); \
139 cond_signal(&vc_cv[fd]); \
142 static const char clnt_vc_errstr[] = "%s : %s";
143 static const char clnt_vc_str[] = "clnt_vc_create";
144 static const char __no_mem_str[] = "out of memory";
147 * Create a client handle for a connection.
148 * Default options are set, which the user can change using clnt_control()'s.
149 * The rpc/vc package does buffering similar to stdio, so the client
150 * must pick send and receive buffer sizes, 0 => use the default.
151 * NB: fd is copied into a private area.
152 * NB: The rpch->cl_auth is set null authentication. Caller may wish to
153 * set this something more useful.
155 * fd should be an open socket
157 * fd - open file descriptor
158 * raddr - servers address
159 * prog - program number
160 * vers - version number
161 * sendsz - buffer send size
162 * recvsz - buffer recv size
165 clnt_vc_create(int fd, const struct netbuf *raddr, const rpcprog_t prog,
166 const rpcvers_t vers, u_int sendsz, u_int recvsz)
168 CLIENT *cl; /* client handle */
169 struct ct_data *ct = NULL; /* client handle */
171 struct rpc_msg call_msg;
172 static u_int32_t disrupt;
175 struct sockaddr_storage ss;
177 struct __rpc_sockinfo si;
180 disrupt = (u_int32_t)(long)raddr;
182 cl = (CLIENT *)mem_alloc(sizeof (*cl));
183 ct = (struct ct_data *)mem_alloc(sizeof (*ct));
184 if ((cl == (CLIENT *)NULL) || (ct == (struct ct_data *)NULL)) {
185 (void) syslog(LOG_ERR, clnt_vc_errstr,
186 clnt_vc_str, __no_mem_str);
187 rpc_createerr.cf_stat = RPC_SYSTEMERROR;
188 rpc_createerr.cf_error.re_errno = errno;
191 ct->ct_addr.buf = NULL;
192 sigfillset(&newmask);
193 thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
194 mutex_lock(&clnt_fd_lock);
195 if (vc_fd_locks == (int *) NULL) {
196 int cv_allocsz, fd_allocsz;
197 int dtbsize = __rpc_dtbsize();
199 fd_allocsz = dtbsize * sizeof (int);
200 vc_fd_locks = (int *) mem_alloc(fd_allocsz);
201 if (vc_fd_locks == (int *) NULL) {
202 mutex_unlock(&clnt_fd_lock);
203 thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
206 memset(vc_fd_locks, '\0', fd_allocsz);
208 assert(vc_cv == (cond_t *) NULL);
209 cv_allocsz = dtbsize * sizeof (cond_t);
210 vc_cv = (cond_t *) mem_alloc(cv_allocsz);
211 if (vc_cv == (cond_t *) NULL) {
212 mem_free(vc_fd_locks, fd_allocsz);
213 vc_fd_locks = (int *) NULL;
214 mutex_unlock(&clnt_fd_lock);
215 thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
220 for (i = 0; i < dtbsize; i++)
221 cond_init(&vc_cv[i], 0, (void *) 0);
224 assert(vc_cv != (cond_t *) NULL);
227 * XXX - fvdl connecting while holding a mutex?
230 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) {
231 if (errno != ENOTCONN) {
232 rpc_createerr.cf_stat = RPC_SYSTEMERROR;
233 rpc_createerr.cf_error.re_errno = errno;
234 mutex_unlock(&clnt_fd_lock);
235 thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
238 if (_connect(fd, (struct sockaddr *)raddr->buf, raddr->len) < 0){
239 rpc_createerr.cf_stat = RPC_SYSTEMERROR;
240 rpc_createerr.cf_error.re_errno = errno;
241 mutex_unlock(&clnt_fd_lock);
242 thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
246 mutex_unlock(&clnt_fd_lock);
247 thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
248 if (!__rpc_fd2sockinfo(fd, &si))
251 ct->ct_closeit = FALSE;
254 * Set up private data struct
257 ct->ct_wait.tv_usec = 0;
258 ct->ct_waitset = FALSE;
259 ct->ct_addr.buf = malloc(raddr->maxlen);
260 if (ct->ct_addr.buf == NULL)
262 memcpy(ct->ct_addr.buf, raddr->buf, raddr->len);
263 ct->ct_addr.len = raddr->len;
264 ct->ct_addr.maxlen = raddr->maxlen;
267 * Initialize call message
269 (void)gettimeofday(&now, NULL);
270 call_msg.rm_xid = ((u_int32_t)++disrupt) ^ __RPC_GETXID(&now);
271 call_msg.rm_direction = CALL;
272 call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
273 call_msg.rm_call.cb_prog = (u_int32_t)prog;
274 call_msg.rm_call.cb_vers = (u_int32_t)vers;
277 * pre-serialize the static part of the call msg and stash it away
279 xdrmem_create(&(ct->ct_xdrs), ct->ct_u.ct_mcallc, MCALL_MSG_SIZE,
281 if (! xdr_callhdr(&(ct->ct_xdrs), &call_msg)) {
282 if (ct->ct_closeit) {
287 ct->ct_mpos = XDR_GETPOS(&(ct->ct_xdrs));
288 XDR_DESTROY(&(ct->ct_xdrs));
289 assert(ct->ct_mpos + sizeof(uint32_t) <= MCALL_MSG_SIZE);
292 * Create a client handle which uses xdrrec for serialization
293 * and authnone for authentication.
295 cl->cl_ops = clnt_vc_ops();
297 cl->cl_auth = authnone_create();
298 sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz);
299 recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz);
300 xdrrec_create(&(ct->ct_xdrs), sendsz, recvsz,
301 cl->cl_private, read_vc, write_vc);
307 mem_free(ct->ct_addr.buf, ct->ct_addr.len);
308 mem_free(ct, sizeof (struct ct_data));
311 mem_free(cl, sizeof (CLIENT));
312 return ((CLIENT *)NULL);
315 static enum clnt_stat
316 clnt_vc_call(CLIENT *cl, rpcproc_t proc, xdrproc_t xdr_args, void *args_ptr,
317 xdrproc_t xdr_results, void *results_ptr, struct timeval timeout)
319 struct ct_data *ct = (struct ct_data *) cl->cl_private;
320 XDR *xdrs = &(ct->ct_xdrs);
321 struct rpc_msg reply_msg;
323 u_int32_t *msg_x_id = &ct->ct_u.ct_mcalli; /* yuk */
326 sigset_t mask, newmask;
332 sigfillset(&newmask);
333 thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
334 mutex_lock(&clnt_fd_lock);
335 while (vc_fd_locks[ct->ct_fd])
336 cond_wait(&vc_cv[ct->ct_fd], &clnt_fd_lock);
341 vc_fd_locks[ct->ct_fd] = rpc_lock_value;
342 mutex_unlock(&clnt_fd_lock);
343 if (!ct->ct_waitset) {
344 /* If time is not within limits, we ignore it. */
345 if (time_not_ok(&timeout) == FALSE)
346 ct->ct_wait = timeout;
350 (xdr_results == NULL && timeout.tv_sec == 0
351 && timeout.tv_usec == 0) ? FALSE : TRUE;
354 xdrs->x_op = XDR_ENCODE;
355 ct->ct_error.re_status = RPC_SUCCESS;
356 x_id = ntohl(--(*msg_x_id));
358 if (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
359 if ((! XDR_PUTBYTES(xdrs, ct->ct_u.ct_mcallc, ct->ct_mpos)) ||
360 (! XDR_PUTINT32(xdrs, &proc)) ||
361 (! AUTH_MARSHALL(cl->cl_auth, xdrs)) ||
362 (! (*xdr_args)(xdrs, args_ptr))) {
363 if (ct->ct_error.re_status == RPC_SUCCESS)
364 ct->ct_error.re_status = RPC_CANTENCODEARGS;
365 (void)xdrrec_endofrecord(xdrs, TRUE);
366 release_fd_lock(ct->ct_fd, mask);
367 return (ct->ct_error.re_status);
370 *(uint32_t *) &ct->ct_u.ct_mcallc[ct->ct_mpos] = htonl(proc);
371 if (! __rpc_gss_wrap(cl->cl_auth, ct->ct_u.ct_mcallc,
372 ct->ct_mpos + sizeof(uint32_t),
373 xdrs, xdr_args, args_ptr)) {
374 if (ct->ct_error.re_status == RPC_SUCCESS)
375 ct->ct_error.re_status = RPC_CANTENCODEARGS;
376 (void)xdrrec_endofrecord(xdrs, TRUE);
377 release_fd_lock(ct->ct_fd, mask);
378 return (ct->ct_error.re_status);
381 if (! xdrrec_endofrecord(xdrs, shipnow)) {
382 release_fd_lock(ct->ct_fd, mask);
383 return (ct->ct_error.re_status = RPC_CANTSEND);
386 release_fd_lock(ct->ct_fd, mask);
387 return (RPC_SUCCESS);
390 * Hack to provide rpc-based message passing
392 if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
393 release_fd_lock(ct->ct_fd, mask);
394 return(ct->ct_error.re_status = RPC_TIMEDOUT);
399 * Keep receiving until we get a valid transaction id
401 xdrs->x_op = XDR_DECODE;
403 reply_msg.acpted_rply.ar_verf = _null_auth;
404 reply_msg.acpted_rply.ar_results.where = NULL;
405 reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void;
406 if (! xdrrec_skiprecord(xdrs)) {
407 release_fd_lock(ct->ct_fd, mask);
408 return (ct->ct_error.re_status);
410 /* now decode and validate the response header */
411 if (! xdr_replymsg(xdrs, &reply_msg)) {
412 if (ct->ct_error.re_status == RPC_SUCCESS)
414 release_fd_lock(ct->ct_fd, mask);
415 return (ct->ct_error.re_status);
417 if (reply_msg.rm_xid == x_id)
424 _seterr_reply(&reply_msg, &(ct->ct_error));
425 if (ct->ct_error.re_status == RPC_SUCCESS) {
426 if (! AUTH_VALIDATE(cl->cl_auth,
427 &reply_msg.acpted_rply.ar_verf)) {
428 ct->ct_error.re_status = RPC_AUTHERROR;
429 ct->ct_error.re_why = AUTH_INVALIDRESP;
431 if (cl->cl_auth->ah_cred.oa_flavor != RPCSEC_GSS) {
432 reply_stat = (*xdr_results)(xdrs, results_ptr);
434 reply_stat = __rpc_gss_unwrap(cl->cl_auth,
435 xdrs, xdr_results, results_ptr);
438 if (ct->ct_error.re_status == RPC_SUCCESS)
439 ct->ct_error.re_status =
443 /* free verifier ... */
444 if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
445 xdrs->x_op = XDR_FREE;
446 (void)xdr_opaque_auth(xdrs,
447 &(reply_msg.acpted_rply.ar_verf));
449 } /* end successful completion */
451 /* maybe our credentials need to be refreshed ... */
452 if (refreshes-- && AUTH_REFRESH(cl->cl_auth, &reply_msg))
454 } /* end of unsuccessful completion */
455 release_fd_lock(ct->ct_fd, mask);
456 return (ct->ct_error.re_status);
460 clnt_vc_geterr(CLIENT *cl, struct rpc_err *errp)
465 assert(errp != NULL);
467 ct = (struct ct_data *) cl->cl_private;
468 *errp = ct->ct_error;
472 clnt_vc_freeres(CLIENT *cl, xdrproc_t xdr_res, void *res_ptr)
482 ct = (struct ct_data *)cl->cl_private;
483 xdrs = &(ct->ct_xdrs);
485 sigfillset(&newmask);
486 thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
487 mutex_lock(&clnt_fd_lock);
488 while (vc_fd_locks[ct->ct_fd])
489 cond_wait(&vc_cv[ct->ct_fd], &clnt_fd_lock);
490 xdrs->x_op = XDR_FREE;
491 dummy = (*xdr_res)(xdrs, res_ptr);
492 mutex_unlock(&clnt_fd_lock);
493 thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
494 cond_signal(&vc_cv[ct->ct_fd]);
501 clnt_vc_abort(CLIENT *cl)
506 htonlp(void *dst, const void *src, uint32_t incr)
508 /* We are aligned, so we think */
509 *(uint32_t *)dst = htonl(*(const uint32_t *)src + incr);
513 ntohlp(void *dst, const void *src)
515 /* We are aligned, so we think */
516 *(uint32_t *)dst = htonl(*(const uint32_t *)src);
520 clnt_vc_control(CLIENT *cl, u_int request, void *info)
530 ct = (struct ct_data *)cl->cl_private;
532 sigfillset(&newmask);
533 thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
534 mutex_lock(&clnt_fd_lock);
535 while (vc_fd_locks[ct->ct_fd])
536 cond_wait(&vc_cv[ct->ct_fd], &clnt_fd_lock);
541 vc_fd_locks[ct->ct_fd] = rpc_lock_value;
542 mutex_unlock(&clnt_fd_lock);
546 ct->ct_closeit = TRUE;
547 release_fd_lock(ct->ct_fd, mask);
549 case CLSET_FD_NCLOSE:
550 ct->ct_closeit = FALSE;
551 release_fd_lock(ct->ct_fd, mask);
557 /* for other requests which use info */
559 release_fd_lock(ct->ct_fd, mask);
564 if (time_not_ok((struct timeval *)info)) {
565 release_fd_lock(ct->ct_fd, mask);
568 ct->ct_wait = *(struct timeval *)infop;
569 ct->ct_waitset = TRUE;
572 *(struct timeval *)infop = ct->ct_wait;
574 case CLGET_SERVER_ADDR:
575 (void) memcpy(info, ct->ct_addr.buf, (size_t)ct->ct_addr.len);
578 *(int *)info = ct->ct_fd;
581 /* The caller should not free this memory area */
582 *(struct netbuf *)info = ct->ct_addr;
584 case CLSET_SVC_ADDR: /* set to new address */
585 release_fd_lock(ct->ct_fd, mask);
589 * use the knowledge that xid is the
590 * first element in the call structure
591 * This will get the xid of the PREVIOUS call
593 ntohlp(info, &ct->ct_u.ct_mcalli);
596 /* This will set the xid of the NEXT call */
597 /* increment by 1 as clnt_vc_call() decrements once */
598 htonlp(&ct->ct_u.ct_mcalli, info, 1);
602 * This RELIES on the information that, in the call body,
603 * the version number field is the fifth field from the
604 * beginning of the RPC header. MUST be changed if the
605 * call_struct is changed
607 ntohlp(info, ct->ct_u.ct_mcallc + 4 * BYTES_PER_XDR_UNIT);
611 htonlp(ct->ct_u.ct_mcallc + 4 * BYTES_PER_XDR_UNIT, info, 0);
616 * This RELIES on the information that, in the call body,
617 * the program number field is the fourth field from the
618 * beginning of the RPC header. MUST be changed if the
619 * call_struct is changed
621 ntohlp(info, ct->ct_u.ct_mcallc + 3 * BYTES_PER_XDR_UNIT);
625 htonlp(ct->ct_u.ct_mcallc + 3 * BYTES_PER_XDR_UNIT, info, 0);
629 release_fd_lock(ct->ct_fd, mask);
632 release_fd_lock(ct->ct_fd, mask);
638 clnt_vc_destroy(CLIENT *cl)
640 struct ct_data *ct = (struct ct_data *) cl->cl_private;
641 int ct_fd = ct->ct_fd;
647 ct = (struct ct_data *) cl->cl_private;
649 sigfillset(&newmask);
650 thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
651 mutex_lock(&clnt_fd_lock);
652 while (vc_fd_locks[ct_fd])
653 cond_wait(&vc_cv[ct_fd], &clnt_fd_lock);
654 if (ct->ct_closeit && ct->ct_fd != -1) {
655 (void)_close(ct->ct_fd);
657 XDR_DESTROY(&(ct->ct_xdrs));
658 free(ct->ct_addr.buf);
659 mem_free(ct, sizeof(struct ct_data));
660 if (cl->cl_netid && cl->cl_netid[0])
661 mem_free(cl->cl_netid, strlen(cl->cl_netid) +1);
662 if (cl->cl_tp && cl->cl_tp[0])
663 mem_free(cl->cl_tp, strlen(cl->cl_tp) +1);
664 mem_free(cl, sizeof(CLIENT));
665 mutex_unlock(&clnt_fd_lock);
666 thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
667 cond_signal(&vc_cv[ct_fd]);
671 * Interface between xdr serializer and tcp connection.
672 * Behaves like the system calls, read & write, but keeps some error state
673 * around for the rpc level.
676 read_vc(void *ctp, void *buf, int len)
680 struct ct_data *ct = (struct ct_data *)ctp;
682 int milliseconds = (int)((ct->ct_wait.tv_sec * 1000) +
683 (ct->ct_wait.tv_usec / 1000));
690 switch (_poll(&fd, 1, milliseconds)) {
692 ct->ct_error.re_status = RPC_TIMEDOUT;
698 ct->ct_error.re_status = RPC_CANTRECV;
699 ct->ct_error.re_errno = errno;
706 if ((_getpeername(ct->ct_fd, &sa, &sal) == 0) &&
707 (sa.sa_family == AF_LOCAL)) {
708 len = __msgread(ct->ct_fd, buf, (size_t)len);
710 len = _read(ct->ct_fd, buf, (size_t)len);
716 ct->ct_error.re_errno = ECONNRESET;
717 ct->ct_error.re_status = RPC_CANTRECV;
718 len = -1; /* it's really an error */
722 ct->ct_error.re_errno = errno;
723 ct->ct_error.re_status = RPC_CANTRECV;
730 write_vc(void *ctp, void *buf, int len)
734 struct ct_data *ct = (struct ct_data *)ctp;
738 if ((_getpeername(ct->ct_fd, &sa, &sal) == 0) &&
739 (sa.sa_family == AF_LOCAL)) {
740 for (cnt = len; cnt > 0; cnt -= i, buf = (char *)buf + i) {
741 if ((i = __msgwrite(ct->ct_fd, buf,
742 (size_t)cnt)) == -1) {
743 ct->ct_error.re_errno = errno;
744 ct->ct_error.re_status = RPC_CANTSEND;
749 for (cnt = len; cnt > 0; cnt -= i, buf = (char *)buf + i) {
750 if ((i = _write(ct->ct_fd, buf, (size_t)cnt)) == -1) {
751 ct->ct_error.re_errno = errno;
752 ct->ct_error.re_status = RPC_CANTSEND;
760 static struct clnt_ops *
763 static struct clnt_ops ops;
764 sigset_t mask, newmask;
766 /* VARIABLES PROTECTED BY ops_lock: ops */
768 sigfillset(&newmask);
769 thr_sigsetmask(SIG_SETMASK, &newmask, &mask);
770 mutex_lock(&ops_lock);
771 if (ops.cl_call == NULL) {
772 ops.cl_call = clnt_vc_call;
773 ops.cl_abort = clnt_vc_abort;
774 ops.cl_geterr = clnt_vc_geterr;
775 ops.cl_freeres = clnt_vc_freeres;
776 ops.cl_destroy = clnt_vc_destroy;
777 ops.cl_control = clnt_vc_control;
779 mutex_unlock(&ops_lock);
780 thr_sigsetmask(SIG_SETMASK, &(mask), NULL);
785 * Make sure that the time is not garbage. -1 value is disallowed.
786 * Note this is different from time_not_ok in clnt_dg.c
789 time_not_ok(struct timeval *t)
791 return (t->tv_sec <= -1 || t->tv_sec > 100000000 ||
792 t->tv_usec <= -1 || t->tv_usec > 1000000);
796 __msgread(int sock, void *buf, size_t cnt)
802 char control[CMSG_SPACE(sizeof(struct cmsgcred))];
805 bzero((char *)&cm, sizeof(cm));
806 iov[0].iov_base = buf;
807 iov[0].iov_len = cnt;
813 msg.msg_control = (caddr_t)&cm;
814 msg.msg_controllen = CMSG_SPACE(sizeof(struct cmsgcred));
817 return(_recvmsg(sock, &msg, 0));
821 __msgwrite(int sock, void *buf, size_t cnt)
827 char control[CMSG_SPACE(sizeof(struct cmsgcred))];
830 bzero((char *)&cm, sizeof(cm));
831 iov[0].iov_base = buf;
832 iov[0].iov_len = cnt;
834 cm.cmsg.cmsg_type = SCM_CREDS;
835 cm.cmsg.cmsg_level = SOL_SOCKET;
836 cm.cmsg.cmsg_len = CMSG_LEN(sizeof(struct cmsgcred));
842 msg.msg_control = (caddr_t)&cm;
843 msg.msg_controllen = CMSG_SPACE(sizeof(struct cmsgcred));
846 return(_sendmsg(sock, &msg, 0));