1 | /* |
2 | * clnt_unix.c, Implements a TCP/IP based, client side RPC. |
3 | * |
4 | * Copyright (c) 2010, Oracle America, Inc. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions are |
8 | * met: |
9 | * |
10 | * * Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * * Redistributions in binary form must reproduce the above |
13 | * copyright notice, this list of conditions and the following |
14 | * disclaimer in the documentation and/or other materials |
15 | * provided with the distribution. |
16 | * * Neither the name of the "Oracle America, Inc." nor the names of its |
17 | * contributors may be used to endorse or promote products derived |
18 | * from this software without specific prior written permission. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
23 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
24 | * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
25 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
27 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
29 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
32 | * |
33 | * TCP based RPC supports 'batched calls'. |
34 | * A sequence of calls may be batched-up in a send buffer. The rpc call |
35 | * return immediately to the client even though the call was not necessarily |
36 | * sent. The batching occurs if the results' xdr routine is NULL (0) AND |
37 | * the rpc timeout value is zero (see clnt.h, rpc). |
38 | * |
39 | * Clients should NOT casually batch calls that in fact return results; that is, |
40 | * the server side should be aware that a call is batched and not produce any |
41 | * return message. Batched calls that produce many result messages can |
42 | * deadlock (netlock) the client and the server.... |
43 | * |
44 | * Now go hang yourself. |
45 | */ |
46 | |
47 | #include <netdb.h> |
48 | #include <errno.h> |
49 | #include <stdio.h> |
50 | #include <unistd.h> |
51 | #include <libintl.h> |
52 | #include <rpc/rpc.h> |
53 | #include <sys/uio.h> |
54 | #include <sys/poll.h> |
55 | #include <sys/socket.h> |
56 | #include <rpc/pmap_clnt.h> |
57 | #include <wchar.h> |
58 | #include <shlib-compat.h> |
59 | |
60 | extern u_long _create_xid (void); |
61 | |
62 | #define MCALL_MSG_SIZE 24 |
63 | |
64 | struct ct_data |
65 | { |
66 | int ct_sock; |
67 | bool_t ct_closeit; |
68 | struct timeval ct_wait; |
69 | bool_t ct_waitset; /* wait set by clnt_control? */ |
70 | struct sockaddr_un ct_addr; |
71 | struct rpc_err ct_error; |
72 | char ct_mcall[MCALL_MSG_SIZE]; /* marshalled callmsg */ |
73 | u_int ct_mpos; /* pos after marshal */ |
74 | XDR ct_xdrs; |
75 | }; |
76 | |
77 | static int readunix (char *, char *, int); |
78 | static int writeunix (char *, char *, int); |
79 | |
80 | static enum clnt_stat clntunix_call (CLIENT *, u_long, xdrproc_t, caddr_t, |
81 | xdrproc_t, caddr_t, struct timeval); |
82 | static void clntunix_abort (void); |
83 | static void clntunix_geterr (CLIENT *, struct rpc_err *); |
84 | static bool_t clntunix_freeres (CLIENT *, xdrproc_t, caddr_t); |
85 | static bool_t clntunix_control (CLIENT *, int, char *); |
86 | static void clntunix_destroy (CLIENT *); |
87 | |
88 | static const struct clnt_ops unix_ops = |
89 | { |
90 | clntunix_call, |
91 | clntunix_abort, |
92 | clntunix_geterr, |
93 | clntunix_freeres, |
94 | clntunix_destroy, |
95 | clntunix_control |
96 | }; |
97 | |
98 | /* |
99 | * Create a client handle for a tcp/ip connection. |
100 | * If *sockp<0, *sockp is set to a newly created TCP socket and it is |
101 | * connected to raddr. If *sockp non-negative then |
102 | * raddr is ignored. The rpc/tcp package does buffering |
103 | * similar to stdio, so the client must pick send and receive buffer sizes,]; |
104 | * 0 => use the default. |
105 | * If raddr->sin_port is 0, then a binder on the remote machine is |
106 | * consulted for the right port number. |
107 | * NB: *sockp is copied into a private area. |
108 | * NB: It is the clients responsibility to close *sockp. |
109 | * NB: The rpch->cl_auth is set null authentication. Caller may wish to set this |
110 | * something more useful. |
111 | */ |
112 | CLIENT * |
113 | clntunix_create (struct sockaddr_un *raddr, u_long prog, u_long vers, |
114 | int *sockp, u_int sendsz, u_int recvsz) |
115 | { |
116 | CLIENT *h; |
117 | struct ct_data *ct = (struct ct_data *) mem_alloc (sizeof (*ct)); |
118 | struct rpc_msg call_msg; |
119 | int len; |
120 | |
121 | h = (CLIENT *) mem_alloc (sizeof (*h)); |
122 | if (h == NULL || ct == NULL) |
123 | { |
124 | struct rpc_createerr *ce = &get_rpc_createerr (); |
125 | (void) __fxprintf (NULL, "%s: %s" , __func__, _("out of memory\n" )); |
126 | ce->cf_stat = RPC_SYSTEMERROR; |
127 | ce->cf_error.re_errno = ENOMEM; |
128 | goto fooy; |
129 | } |
130 | |
131 | /* |
132 | * If no socket given, open one |
133 | */ |
134 | if (*sockp < 0) |
135 | { |
136 | *sockp = __socket (AF_UNIX, SOCK_STREAM, 0); |
137 | len = strlen (raddr->sun_path) + sizeof (raddr->sun_family) + 1; |
138 | if (*sockp < 0 |
139 | || __connect (*sockp, (struct sockaddr *) raddr, len) < 0) |
140 | { |
141 | struct rpc_createerr *ce = &get_rpc_createerr (); |
142 | ce->cf_stat = RPC_SYSTEMERROR; |
143 | ce->cf_error.re_errno = errno; |
144 | if (*sockp != -1) |
145 | __close (*sockp); |
146 | goto fooy; |
147 | } |
148 | ct->ct_closeit = TRUE; |
149 | } |
150 | else |
151 | { |
152 | ct->ct_closeit = FALSE; |
153 | } |
154 | |
155 | /* |
156 | * Set up private data struct |
157 | */ |
158 | ct->ct_sock = *sockp; |
159 | ct->ct_wait.tv_usec = 0; |
160 | ct->ct_waitset = FALSE; |
161 | ct->ct_addr = *raddr; |
162 | |
163 | /* |
164 | * Initialize call message |
165 | */ |
166 | call_msg.rm_xid = _create_xid (); |
167 | call_msg.rm_direction = CALL; |
168 | call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; |
169 | call_msg.rm_call.cb_prog = prog; |
170 | call_msg.rm_call.cb_vers = vers; |
171 | |
172 | /* |
173 | * pre-serialize the static part of the call msg and stash it away |
174 | */ |
175 | xdrmem_create (&(ct->ct_xdrs), ct->ct_mcall, MCALL_MSG_SIZE, XDR_ENCODE); |
176 | if (!xdr_callhdr (&(ct->ct_xdrs), &call_msg)) |
177 | { |
178 | if (ct->ct_closeit) |
179 | __close (*sockp); |
180 | goto fooy; |
181 | } |
182 | ct->ct_mpos = XDR_GETPOS (&(ct->ct_xdrs)); |
183 | XDR_DESTROY (&(ct->ct_xdrs)); |
184 | |
185 | /* |
186 | * Create a client handle which uses xdrrec for serialization |
187 | * and authnone for authentication. |
188 | */ |
189 | xdrrec_create (&(ct->ct_xdrs), sendsz, recvsz, |
190 | (caddr_t) ct, readunix, writeunix); |
191 | h->cl_ops = (struct clnt_ops *) &unix_ops; |
192 | h->cl_private = (caddr_t) ct; |
193 | h->cl_auth = authnone_create (); |
194 | return h; |
195 | |
196 | fooy: |
197 | /* |
198 | * Something goofed, free stuff and barf |
199 | */ |
200 | mem_free ((caddr_t) ct, sizeof (struct ct_data)); |
201 | mem_free ((caddr_t) h, sizeof (CLIENT)); |
202 | return (CLIENT *) NULL; |
203 | } |
204 | libc_hidden_nolink_sunrpc (clntunix_create, GLIBC_2_1) |
205 | |
206 | static enum clnt_stat |
207 | clntunix_call (CLIENT *h, u_long proc, xdrproc_t xdr_args, caddr_t args_ptr, |
208 | xdrproc_t xdr_results, caddr_t results_ptr, |
209 | struct timeval timeout) |
210 | { |
211 | struct ct_data *ct = (struct ct_data *) h->cl_private; |
212 | XDR *xdrs = &(ct->ct_xdrs); |
213 | struct rpc_msg reply_msg; |
214 | u_long x_id; |
215 | uint32_t *msg_x_id = (uint32_t *) (ct->ct_mcall); /* yuk */ |
216 | bool_t shipnow; |
217 | int refreshes = 2; |
218 | |
219 | if (!ct->ct_waitset) |
220 | { |
221 | ct->ct_wait = timeout; |
222 | } |
223 | |
224 | shipnow = |
225 | (xdr_results == (xdrproc_t) 0 && ct->ct_wait.tv_sec == 0 |
226 | && ct->ct_wait.tv_usec == 0) ? FALSE : TRUE; |
227 | |
228 | call_again: |
229 | xdrs->x_op = XDR_ENCODE; |
230 | ct->ct_error.re_status = RPC_SUCCESS; |
231 | x_id = ntohl (--(*msg_x_id)); |
232 | if ((!XDR_PUTBYTES (xdrs, ct->ct_mcall, ct->ct_mpos)) || |
233 | (!XDR_PUTLONG (xdrs, (long *) &proc)) || |
234 | (!AUTH_MARSHALL (h->cl_auth, xdrs)) || |
235 | (!(*xdr_args) (xdrs, args_ptr))) |
236 | { |
237 | if (ct->ct_error.re_status == RPC_SUCCESS) |
238 | ct->ct_error.re_status = RPC_CANTENCODEARGS; |
239 | (void) xdrrec_endofrecord (xdrs, TRUE); |
240 | return ct->ct_error.re_status; |
241 | } |
242 | if (!xdrrec_endofrecord (xdrs, shipnow)) |
243 | return ct->ct_error.re_status = RPC_CANTSEND; |
244 | if (!shipnow) |
245 | return RPC_SUCCESS; |
246 | /* |
247 | * Hack to provide rpc-based message passing |
248 | */ |
249 | if (ct->ct_wait.tv_sec == 0 && ct->ct_wait.tv_usec == 0) |
250 | return ct->ct_error.re_status = RPC_TIMEDOUT; |
251 | |
252 | |
253 | /* |
254 | * Keep receiving until we get a valid transaction id |
255 | */ |
256 | xdrs->x_op = XDR_DECODE; |
257 | while (TRUE) |
258 | { |
259 | reply_msg.acpted_rply.ar_verf = _null_auth; |
260 | reply_msg.acpted_rply.ar_results.where = NULL; |
261 | reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void; |
262 | if (!xdrrec_skiprecord (xdrs)) |
263 | return ct->ct_error.re_status; |
264 | /* now decode and validate the response header */ |
265 | if (!xdr_replymsg (xdrs, &reply_msg)) |
266 | { |
267 | if (ct->ct_error.re_status == RPC_SUCCESS) |
268 | continue; |
269 | return ct->ct_error.re_status; |
270 | } |
271 | if (reply_msg.rm_xid == x_id) |
272 | break; |
273 | } |
274 | |
275 | /* |
276 | * process header |
277 | */ |
278 | _seterr_reply (&reply_msg, &(ct->ct_error)); |
279 | if (ct->ct_error.re_status == RPC_SUCCESS) |
280 | { |
281 | if (!AUTH_VALIDATE (h->cl_auth, &reply_msg.acpted_rply.ar_verf)) |
282 | { |
283 | ct->ct_error.re_status = RPC_AUTHERROR; |
284 | ct->ct_error.re_why = AUTH_INVALIDRESP; |
285 | } |
286 | else if (!(*xdr_results) (xdrs, results_ptr)) |
287 | { |
288 | if (ct->ct_error.re_status == RPC_SUCCESS) |
289 | ct->ct_error.re_status = RPC_CANTDECODERES; |
290 | } |
291 | /* free verifier ... */ |
292 | if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) |
293 | { |
294 | xdrs->x_op = XDR_FREE; |
295 | (void) xdr_opaque_auth (xdrs, &(reply_msg.acpted_rply.ar_verf)); |
296 | } |
297 | } /* end successful completion */ |
298 | else |
299 | { |
300 | /* maybe our credentials need to be refreshed ... */ |
301 | if (refreshes-- && AUTH_REFRESH (h->cl_auth)) |
302 | goto call_again; |
303 | } /* end of unsuccessful completion */ |
304 | return ct->ct_error.re_status; |
305 | } |
306 | |
307 | static void |
308 | clntunix_geterr (CLIENT *h, struct rpc_err *errp) |
309 | { |
310 | struct ct_data *ct = (struct ct_data *) h->cl_private; |
311 | |
312 | *errp = ct->ct_error; |
313 | } |
314 | |
315 | static bool_t |
316 | clntunix_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr) |
317 | { |
318 | struct ct_data *ct = (struct ct_data *) cl->cl_private; |
319 | XDR *xdrs = &(ct->ct_xdrs); |
320 | |
321 | xdrs->x_op = XDR_FREE; |
322 | return (*xdr_res) (xdrs, res_ptr); |
323 | } |
324 | |
325 | static void |
326 | clntunix_abort (void) |
327 | { |
328 | } |
329 | |
330 | static bool_t |
331 | clntunix_control (CLIENT *cl, int request, char *info) |
332 | { |
333 | struct ct_data *ct = (struct ct_data *) cl->cl_private; |
334 | u_long ul; |
335 | uint32_t ui32; |
336 | |
337 | switch (request) |
338 | { |
339 | case CLSET_FD_CLOSE: |
340 | ct->ct_closeit = TRUE; |
341 | break; |
342 | case CLSET_FD_NCLOSE: |
343 | ct->ct_closeit = FALSE; |
344 | break; |
345 | case CLSET_TIMEOUT: |
346 | ct->ct_wait = *(struct timeval *) info; |
347 | break; |
348 | case CLGET_TIMEOUT: |
349 | *(struct timeval *) info = ct->ct_wait; |
350 | break; |
351 | case CLGET_SERVER_ADDR: |
352 | *(struct sockaddr_un *) info = ct->ct_addr; |
353 | break; |
354 | case CLGET_FD: |
355 | *(int *)info = ct->ct_sock; |
356 | break; |
357 | case CLGET_XID: |
358 | /* |
359 | * use the knowledge that xid is the |
360 | * first element in the call structure *. |
361 | * This will get the xid of the PREVIOUS call |
362 | */ |
363 | memcpy (&ui32, ct->ct_mcall, sizeof (ui32)); |
364 | ul = ntohl (ui32); |
365 | memcpy (info, &ul, sizeof (ul)); |
366 | break; |
367 | case CLSET_XID: |
368 | /* This will set the xid of the NEXT call */ |
369 | memcpy (&ul, info, sizeof (ul)); |
370 | ui32 = htonl (ul - 1); |
371 | memcpy (ct->ct_mcall, &ui32, sizeof (ui32)); |
372 | /* decrement by 1 as clntunix_call() increments once */ |
373 | break; |
374 | case CLGET_VERS: |
375 | /* |
376 | * This RELIES on the information that, in the call body, |
377 | * the version number field is the fifth field from the |
378 | * beginning of the RPC header. MUST be changed if the |
379 | * call_struct is changed |
380 | */ |
381 | memcpy (&ui32, ct->ct_mcall + 4 * BYTES_PER_XDR_UNIT, sizeof (ui32)); |
382 | ul = ntohl (ui32); |
383 | memcpy (info, &ul, sizeof (ul)); |
384 | break; |
385 | case CLSET_VERS: |
386 | memcpy (&ul, info, sizeof (ul)); |
387 | ui32 = htonl (ul); |
388 | memcpy (ct->ct_mcall + 4 * BYTES_PER_XDR_UNIT, &ui32, sizeof (ui32)); |
389 | break; |
390 | case CLGET_PROG: |
391 | /* |
392 | * This RELIES on the information that, in the call body, |
393 | * the program number field is the field from the |
394 | * beginning of the RPC header. MUST be changed if the |
395 | * call_struct is changed |
396 | */ |
397 | memcpy (&ui32, ct->ct_mcall + 3 * BYTES_PER_XDR_UNIT, sizeof (ui32)); |
398 | ul = ntohl (ui32); |
399 | memcpy (info, &ul, sizeof (ul)); |
400 | break; |
401 | case CLSET_PROG: |
402 | memcpy (&ul, info, sizeof (ul)); |
403 | ui32 = htonl (ul); |
404 | memcpy (ct->ct_mcall + 3 * BYTES_PER_XDR_UNIT, &ui32, sizeof (ui32)); |
405 | break; |
406 | /* The following are only possible with TI-RPC */ |
407 | case CLGET_RETRY_TIMEOUT: |
408 | case CLSET_RETRY_TIMEOUT: |
409 | case CLGET_SVC_ADDR: |
410 | case CLSET_SVC_ADDR: |
411 | case CLSET_PUSH_TIMOD: |
412 | case CLSET_POP_TIMOD: |
413 | default: |
414 | return FALSE; |
415 | } |
416 | return TRUE; |
417 | } |
418 | |
419 | |
420 | static void |
421 | clntunix_destroy (CLIENT *h) |
422 | { |
423 | struct ct_data *ct = |
424 | (struct ct_data *) h->cl_private; |
425 | |
426 | if (ct->ct_closeit) |
427 | { |
428 | (void) __close (ct->ct_sock); |
429 | } |
430 | XDR_DESTROY (&(ct->ct_xdrs)); |
431 | mem_free ((caddr_t) ct, sizeof (struct ct_data)); |
432 | mem_free ((caddr_t) h, sizeof (CLIENT)); |
433 | } |
434 | |
435 | static int |
436 | __msgread (int sock, void *data, size_t cnt) |
437 | { |
438 | struct iovec iov; |
439 | struct msghdr msg; |
440 | #ifdef SCM_CREDENTIALS |
441 | static char cm[CMSG_SPACE(sizeof (struct ucred))]; |
442 | #endif |
443 | int len; |
444 | |
445 | iov.iov_base = data; |
446 | iov.iov_len = cnt; |
447 | |
448 | msg.msg_iov = &iov; |
449 | msg.msg_iovlen = 1; |
450 | msg.msg_name = NULL; |
451 | msg.msg_namelen = 0; |
452 | #ifdef SCM_CREDENTIALS |
453 | msg.msg_control = (caddr_t) &cm; |
454 | msg.msg_controllen = CMSG_SPACE(sizeof (struct ucred)); |
455 | #endif |
456 | msg.msg_flags = 0; |
457 | |
458 | #ifdef SO_PASSCRED |
459 | { |
460 | int on = 1; |
461 | if (__setsockopt (sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof (on))) |
462 | return -1; |
463 | } |
464 | #endif |
465 | |
466 | restart: |
467 | len = __recvmsg (sock, &msg, 0); |
468 | if (len >= 0) |
469 | { |
470 | if (msg.msg_flags & MSG_CTRUNC || len == 0) |
471 | return 0; |
472 | else |
473 | return len; |
474 | } |
475 | if (errno == EINTR) |
476 | goto restart; |
477 | return -1; |
478 | } |
479 | |
480 | static int |
481 | __msgwrite (int sock, void *data, size_t cnt) |
482 | { |
483 | #ifndef SCM_CREDENTIALS |
484 | /* We cannot implement this reliably. */ |
485 | __set_errno (ENOSYS); |
486 | return -1; |
487 | #else |
488 | struct iovec iov; |
489 | struct msghdr msg; |
490 | struct cmsghdr *cmsg = alloca (CMSG_SPACE(sizeof (struct ucred))); |
491 | struct ucred cred; |
492 | int len; |
493 | |
494 | /* XXX I'm not sure, if gete?id() is always correct, or if we should use |
495 | get?id(). But since keyserv needs geteuid(), we have no other chance. |
496 | It would be much better, if the kernel could pass both to the server. */ |
497 | cred.pid = __getpid (); |
498 | cred.uid = __geteuid (); |
499 | cred.gid = __getegid (); |
500 | |
501 | memcpy (CMSG_DATA(cmsg), &cred, sizeof (struct ucred)); |
502 | cmsg->cmsg_level = SOL_SOCKET; |
503 | cmsg->cmsg_type = SCM_CREDENTIALS; |
504 | cmsg->cmsg_len = sizeof(*cmsg) + sizeof(struct ucred); |
505 | |
506 | iov.iov_base = data; |
507 | iov.iov_len = cnt; |
508 | |
509 | msg.msg_iov = &iov; |
510 | msg.msg_iovlen = 1; |
511 | msg.msg_name = NULL; |
512 | msg.msg_namelen = 0; |
513 | msg.msg_control = cmsg; |
514 | msg.msg_controllen = CMSG_ALIGN(cmsg->cmsg_len); |
515 | msg.msg_flags = 0; |
516 | |
517 | restart: |
518 | len = __sendmsg (sock, &msg, 0); |
519 | if (len >= 0) |
520 | return len; |
521 | if (errno == EINTR) |
522 | goto restart; |
523 | return -1; |
524 | |
525 | #endif |
526 | } |
527 | |
528 | |
529 | /* |
530 | * Interface between xdr serializer and unix connection. |
531 | * Behaves like the system calls, read & write, but keeps some error state |
532 | * around for the rpc level. |
533 | */ |
534 | static int |
535 | readunix (char *ctptr, char *buf, int len) |
536 | { |
537 | struct ct_data *ct = (struct ct_data *) ctptr; |
538 | struct pollfd fd; |
539 | int milliseconds = ((ct->ct_wait.tv_sec * 1000) |
540 | + (ct->ct_wait.tv_usec / 1000)); |
541 | |
542 | if (len == 0) |
543 | return 0; |
544 | |
545 | fd.fd = ct->ct_sock; |
546 | fd.events = POLLIN; |
547 | while (TRUE) |
548 | { |
549 | switch (__poll (&fd, 1, milliseconds)) |
550 | { |
551 | case 0: |
552 | ct->ct_error.re_status = RPC_TIMEDOUT; |
553 | return -1; |
554 | |
555 | case -1: |
556 | if (errno == EINTR) |
557 | continue; |
558 | ct->ct_error.re_status = RPC_CANTRECV; |
559 | ct->ct_error.re_errno = errno; |
560 | return -1; |
561 | } |
562 | break; |
563 | } |
564 | switch (len = __msgread (ct->ct_sock, buf, len)) |
565 | { |
566 | |
567 | case 0: |
568 | /* premature eof */ |
569 | ct->ct_error.re_errno = ECONNRESET; |
570 | ct->ct_error.re_status = RPC_CANTRECV; |
571 | len = -1; /* it's really an error */ |
572 | break; |
573 | |
574 | case -1: |
575 | ct->ct_error.re_errno = errno; |
576 | ct->ct_error.re_status = RPC_CANTRECV; |
577 | break; |
578 | } |
579 | return len; |
580 | } |
581 | |
582 | static int |
583 | writeunix (char *ctptr, char *buf, int len) |
584 | { |
585 | int i, cnt; |
586 | struct ct_data *ct = (struct ct_data *) ctptr; |
587 | |
588 | for (cnt = len; cnt > 0; cnt -= i, buf += i) |
589 | { |
590 | if ((i = __msgwrite (ct->ct_sock, buf, cnt)) == -1) |
591 | { |
592 | ct->ct_error.re_errno = errno; |
593 | ct->ct_error.re_status = RPC_CANTSEND; |
594 | return -1; |
595 | } |
596 | } |
597 | return len; |
598 | } |
599 | |