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Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [librpc/] [src/] [rpc/] [clnt_unix.c] - Blame information for rev 173

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1 30 unneback
/*
2
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3
 * unrestricted use provided that this legend is included on all tape
4
 * media and as a part of the software program in whole or part.  Users
5
 * may copy or modify Sun RPC without charge, but are not authorized
6
 * to license or distribute it to anyone else except as part of a product or
7
 * program developed by the user.
8
 *
9
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12
 *
13
 * Sun RPC is provided with no support and without any obligation on the
14
 * part of Sun Microsystems, Inc. to assist in its use, correction,
15
 * modification or enhancement.
16
 *
17
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19
 * OR ANY PART THEREOF.
20
 *
21
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22
 * or profits or other special, indirect and consequential damages, even if
23
 * Sun has been advised of the possibility of such damages.
24
 *
25
 * Sun Microsystems, Inc.
26
 * 2550 Garcia Avenue
27
 * Mountain View, California  94043
28
 */
29
 
30
#if defined(LIBC_SCCS) && !defined(lint)
31
/*static char *sccsid = "from: @(#)clnt_unix.c 1.37 87/10/05 Copyr 1984 Sun Micro";*/
32
/*static char *sccsid = "from: @(#)clnt_unix.c  2.2 88/08/01 4.0 RPCSRC";*/
33
static char *rcsid = "$FreeBSD: src/lib/libc/rpc/clnt_unix.c,v 1.5 2000/01/27 23:06:37 jasone Exp $";
34
#endif
35
 
36
/*
37
 * clnt_unix.c, Implements a AF_UNIX based, client side RPC.
38
 *
39
 * Copyright (C) 1984, Sun Microsystems, Inc.
40
 *
41
 * AF_UNIX based RPC supports 'batched calls'.
42
 * A sequence of calls may be batched-up in a send buffer.  The rpc call
43
 * return immediately to the client even though the call was not necessarily
44
 * sent.  The batching occurs if the results' xdr routine is NULL (0) AND
45
 * the rpc timeout value is zero (see clnt.h, rpc).
46
 *
47
 * Clients should NOT casually batch calls that in fact return results; that is,
48
 * the server side should be aware that a call is batched and not produce any
49
 * return message.  Batched calls that produce many result messages can
50
 * deadlock (netlock) the client and the server....
51
 *
52
 * Now go hang yourself.
53
 */
54
 
55
#include <stdio.h>
56
#include <stdlib.h>
57
#include <unistd.h>
58
#include <string.h>
59
#include <rpc/rpc.h>
60
#include <sys/uio.h>
61
#include <sys/socket.h>
62
#include <sys/un.h>
63
#include <netdb.h>
64
#include <errno.h>
65
#include <rpc/pmap_clnt.h>
66
 
67
#define MCALL_MSG_SIZE 24
68
 
69
static int      readunix();
70
static int      writeunix();
71
 
72
static enum clnt_stat   clntunix_call();
73
static void             clntunix_abort();
74
static void             clntunix_geterr();
75
static bool_t           clntunix_freeres();
76
static bool_t           clntunix_control();
77
static void             clntunix_destroy();
78
 
79
static struct clnt_ops unix_ops = {
80
        clntunix_call,
81
        clntunix_abort,
82
        clntunix_geterr,
83
        clntunix_freeres,
84
        clntunix_destroy,
85
        clntunix_control
86
};
87
 
88
struct ct_data {
89
        int             ct_sock;
90
        bool_t          ct_closeit;
91
        struct timeval  ct_wait;
92
        bool_t          ct_waitset;       /* wait set by clnt_control? */
93
        struct sockaddr_un ct_addr;
94
        struct rpc_err  ct_error;
95
        char            ct_mcall[MCALL_MSG_SIZE];       /* marshalled callmsg */
96
        u_int           ct_mpos;                        /* pos after marshal */
97
        XDR             ct_xdrs;
98
};
99
 
100
/*
101
 * Create a client handle for a unix/ip connection.
102
 * If *sockp<0, *sockp is set to a newly created TCP socket and it is
103
 * connected to raddr.  If *sockp non-negative then
104
 * raddr is ignored.  The rpc/unix package does buffering
105
 * similar to stdio, so the client must pick send and receive buffer sizes,];
106
 * 0 => use the default.
107
 * If raddr->sin_port is 0, then a binder on the remote machine is
108
 * consulted for the right port number.
109
 * NB: *sockp is copied into a private area.
110
 * NB: It is the clients responsibility to close *sockp.
111
 * NB: The rpch->cl_auth is set null authentication.  Caller may wish to set this
112
 * something more useful.
113
 */
114
CLIENT *
115
clntunix_create(raddr, prog, vers, sockp, sendsz, recvsz)
116
        struct sockaddr_un *raddr;
117
        u_long prog;
118
        u_long vers;
119
        register int *sockp;
120
        u_int sendsz;
121
        u_int recvsz;
122
{
123
        CLIENT *h;
124
        register struct ct_data *ct = NULL;
125
        struct timeval now;
126
        struct rpc_msg call_msg;
127
        static u_int32_t disrupt;
128
        int len;
129
 
130
        if (disrupt == 0)
131
                disrupt = (u_int32_t)(long)raddr;
132
 
133
        h  = (CLIENT *)mem_alloc(sizeof(*h));
134
        if (h == NULL) {
135
                (void)fprintf(stderr, "clntunix_create: out of memory\n");
136
                rpc_createerr.cf_stat = RPC_SYSTEMERROR;
137
                rpc_createerr.cf_error.re_errno = errno;
138
                goto fooy;
139
        }
140
        ct = (struct ct_data *)mem_alloc(sizeof(*ct));
141
        if (ct == NULL) {
142
                (void)fprintf(stderr, "clntunix_create: out of memory\n");
143
                rpc_createerr.cf_stat = RPC_SYSTEMERROR;
144
                rpc_createerr.cf_error.re_errno = errno;
145
                goto fooy;
146
        }
147
 
148
        /*
149
         * If no socket given, open one
150
         */
151
        if (*sockp < 0) {
152
                *sockp = socket(AF_UNIX, SOCK_STREAM, 0);
153
                len = strlen(raddr->sun_path) + sizeof(raddr->sun_family) +
154
                        sizeof(raddr->sun_len) + 1;
155
                raddr->sun_len = len;
156
                if ((*sockp < 0)
157
                    || (connect(*sockp, (struct sockaddr *)raddr, len) < 0)) {
158
                        rpc_createerr.cf_stat = RPC_SYSTEMERROR;
159
                        rpc_createerr.cf_error.re_errno = errno;
160
                        if (*sockp != -1)
161
                                (void)_close(*sockp);
162
                        goto fooy;
163
                }
164
                ct->ct_closeit = TRUE;
165
        } else {
166
                ct->ct_closeit = FALSE;
167
        }
168
 
169
        /*
170
         * Set up private data struct
171
         */
172
        ct->ct_sock = *sockp;
173
        ct->ct_wait.tv_usec = 0;
174
        ct->ct_waitset = FALSE;
175
        ct->ct_addr = *raddr;
176
 
177
        /*
178
         * Initialize call message
179
         */
180
        (void)gettimeofday(&now, (struct timezone *)0);
181
        call_msg.rm_xid = (++disrupt) ^ getpid() ^ now.tv_sec ^ now.tv_usec;
182
        call_msg.rm_direction = CALL;
183
        call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
184
        call_msg.rm_call.cb_prog = prog;
185
        call_msg.rm_call.cb_vers = vers;
186
 
187
        /*
188
         * pre-serialize the static part of the call msg and stash it away
189
         */
190
        xdrmem_create(&(ct->ct_xdrs), ct->ct_mcall, MCALL_MSG_SIZE,
191
            XDR_ENCODE);
192
        if (! xdr_callhdr(&(ct->ct_xdrs), &call_msg)) {
193
                if (ct->ct_closeit) {
194
                        (void)_close(*sockp);
195
                }
196
                goto fooy;
197
        }
198
        ct->ct_mpos = XDR_GETPOS(&(ct->ct_xdrs));
199
        XDR_DESTROY(&(ct->ct_xdrs));
200
 
201
        /*
202
         * Create a client handle which uses xdrrec for serialization
203
         * and authnone for authentication.
204
         */
205
        xdrrec_create(&(ct->ct_xdrs), sendsz, recvsz,
206
            (caddr_t)ct, readunix, writeunix);
207
        h->cl_ops = &unix_ops;
208
        h->cl_private = (caddr_t) ct;
209
        h->cl_auth = authnone_create();
210
        return (h);
211
 
212
fooy:
213
        /*
214
         * Something goofed, free stuff and barf
215
         */
216
        if (ct)
217
                mem_free((caddr_t)ct, sizeof(struct ct_data));
218
        if (h)
219
                mem_free((caddr_t)h, sizeof(CLIENT));
220
        return ((CLIENT *)NULL);
221
}
222
 
223
static enum clnt_stat
224
clntunix_call(h, proc, xdr_args, args_ptr, xdr_results, results_ptr, timeout)
225
        register CLIENT *h;
226
        u_long proc;
227
        xdrproc_t xdr_args;
228
        caddr_t args_ptr;
229
        xdrproc_t xdr_results;
230
        caddr_t results_ptr;
231
        struct timeval timeout;
232
{
233
        register struct ct_data *ct = (struct ct_data *) h->cl_private;
234
        register XDR *xdrs = &(ct->ct_xdrs);
235
        struct rpc_msg reply_msg;
236
        u_long x_id;
237
        u_int32_t *msg_x_id = (u_int32_t *)(ct->ct_mcall);      /* yuk */
238
        register bool_t shipnow;
239
        int refreshes = 2;
240
 
241
        if (!ct->ct_waitset) {
242
                ct->ct_wait = timeout;
243
        }
244
 
245
        shipnow =
246
            (xdr_results == (xdrproc_t)0 && timeout.tv_sec == 0
247
            && timeout.tv_usec == 0) ? FALSE : TRUE;
248
 
249
call_again:
250
        xdrs->x_op = XDR_ENCODE;
251
        ct->ct_error.re_status = RPC_SUCCESS;
252
        x_id = ntohl(--(*msg_x_id));
253
        if ((! XDR_PUTBYTES(xdrs, ct->ct_mcall, ct->ct_mpos)) ||
254
            (! XDR_PUTLONG(xdrs, (long *)&proc)) ||
255
            (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
256
            (! (*xdr_args)(xdrs, args_ptr))) {
257
                if (ct->ct_error.re_status == RPC_SUCCESS)
258
                        ct->ct_error.re_status = RPC_CANTENCODEARGS;
259
                (void)xdrrec_endofrecord(xdrs, TRUE);
260
                return (ct->ct_error.re_status);
261
        }
262
        if (! xdrrec_endofrecord(xdrs, shipnow))
263
                return (ct->ct_error.re_status = RPC_CANTSEND);
264
        if (! shipnow)
265
                return (RPC_SUCCESS);
266
        /*
267
         * Hack to provide rpc-based message passing
268
         */
269
        if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
270
                return(ct->ct_error.re_status = RPC_TIMEDOUT);
271
        }
272
 
273
 
274
        /*
275
         * Keep receiving until we get a valid transaction id
276
         */
277
        xdrs->x_op = XDR_DECODE;
278
        while (TRUE) {
279
                reply_msg.acpted_rply.ar_verf = _null_auth;
280
                reply_msg.acpted_rply.ar_results.where = NULL;
281
                reply_msg.acpted_rply.ar_results.proc = xdr_void;
282
                if (! xdrrec_skiprecord(xdrs))
283
                        return (ct->ct_error.re_status);
284
                /* now decode and validate the response header */
285
                if (! xdr_replymsg(xdrs, &reply_msg)) {
286
                        if (ct->ct_error.re_status == RPC_SUCCESS)
287
                                continue;
288
                        return (ct->ct_error.re_status);
289
                }
290
                if (reply_msg.rm_xid == x_id)
291
                        break;
292
        }
293
 
294
        /*
295
         * process header
296
         */
297
        _seterr_reply(&reply_msg, &(ct->ct_error));
298
        if (ct->ct_error.re_status == RPC_SUCCESS) {
299
                if (! AUTH_VALIDATE(h->cl_auth, &reply_msg.acpted_rply.ar_verf)) {
300
                        ct->ct_error.re_status = RPC_AUTHERROR;
301
                        ct->ct_error.re_why = AUTH_INVALIDRESP;
302
                } else if (! (*xdr_results)(xdrs, results_ptr)) {
303
                        if (ct->ct_error.re_status == RPC_SUCCESS)
304
                                ct->ct_error.re_status = RPC_CANTDECODERES;
305
                }
306
                /* free verifier ... */
307
                if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
308
                        xdrs->x_op = XDR_FREE;
309
                        (void)xdr_opaque_auth(xdrs, &(reply_msg.acpted_rply.ar_verf));
310
                }
311
        }  /* end successful completion */
312
        else {
313
                /* maybe our credentials need to be refreshed ... */
314
                if (refreshes-- && AUTH_REFRESH(h->cl_auth))
315
                        goto call_again;
316
        }  /* end of unsuccessful completion */
317
        return (ct->ct_error.re_status);
318
}
319
 
320
static void
321
clntunix_geterr(h, errp)
322
        CLIENT *h;
323
        struct rpc_err *errp;
324
{
325
        register struct ct_data *ct =
326
            (struct ct_data *) h->cl_private;
327
 
328
        *errp = ct->ct_error;
329
}
330
 
331
static bool_t
332
clntunix_freeres(cl, xdr_res, res_ptr)
333
        CLIENT *cl;
334
        xdrproc_t xdr_res;
335
        caddr_t res_ptr;
336
{
337
        register struct ct_data *ct = (struct ct_data *)cl->cl_private;
338
        register XDR *xdrs = &(ct->ct_xdrs);
339
 
340
        xdrs->x_op = XDR_FREE;
341
        return ((*xdr_res)(xdrs, res_ptr));
342
}
343
 
344
static void
345
clntunix_abort()
346
{
347
}
348
 
349
 
350
static bool_t
351
clntunix_control(cl, request, info)
352
        CLIENT *cl;
353
        int request;
354
        char *info;
355
{
356
        register struct ct_data *ct = (struct ct_data *)cl->cl_private;
357
        register struct timeval *tv;
358
        int len;
359
 
360
        switch (request) {
361
        case CLSET_FD_CLOSE:
362
                ct->ct_closeit = TRUE;
363
                break;
364
        case CLSET_FD_NCLOSE:
365
                ct->ct_closeit = FALSE;
366
                break;
367
        case CLSET_TIMEOUT:
368
                if (info == NULL)
369
                        return(FALSE);
370
                tv = (struct timeval *)info;
371
                ct->ct_wait.tv_sec = tv->tv_sec;
372
                ct->ct_wait.tv_usec = tv->tv_usec;
373
                ct->ct_waitset = TRUE;
374
                break;
375
        case CLGET_TIMEOUT:
376
                if (info == NULL)
377
                        return(FALSE);
378
                *(struct timeval *)info = ct->ct_wait;
379
                break;
380
        case CLGET_SERVER_ADDR:
381
                if (info == NULL)
382
                        return(FALSE);
383
                *(struct sockaddr_un *)info = ct->ct_addr;
384
                break;
385
        case CLGET_FD:
386
                if (info == NULL)
387
                        return(FALSE);
388
                *(int *)info = ct->ct_sock;
389
                break;
390
        case CLGET_XID:
391
                /*
392
                 * use the knowledge that xid is the
393
                 * first element in the call structure *.
394
                 * This will get the xid of the PREVIOUS call
395
                 */
396
                if (info == NULL)
397
                        return(FALSE);
398
                *(u_long *)info = ntohl(*(u_long *)ct->ct_mcall);
399
                break;
400
        case CLSET_XID:
401
                /* This will set the xid of the NEXT call */
402
                if (info == NULL)
403
                        return(FALSE);
404
                *(u_long *)ct->ct_mcall =  htonl(*(u_long *)info - 1);
405
                /* decrement by 1 as clntunix_call() increments once */
406
        case CLGET_VERS:
407
                /*
408
                 * This RELIES on the information that, in the call body,
409
                 * the version number field is the fifth field from the
410
                 * begining of the RPC header. MUST be changed if the
411
                 * call_struct is changed
412
                 */
413
                if (info == NULL)
414
                        return(FALSE);
415
                *(u_long *)info = ntohl(*(u_long *)(ct->ct_mcall +
416
                                                4 * BYTES_PER_XDR_UNIT));
417
                break;
418
        case CLSET_VERS:
419
                if (info == NULL)
420
                        return(FALSE);
421
                *(u_long *)(ct->ct_mcall + 4 * BYTES_PER_XDR_UNIT)
422
                                = htonl(*(u_long *)info);
423
                break;
424
        case CLGET_PROG:
425
                /*
426
                 * This RELIES on the information that, in the call body,
427
                 * the program number field is the  field from the
428
                 * begining of the RPC header. MUST be changed if the
429
                 * call_struct is changed
430
                 */
431
                if (info == NULL)
432
                        return(FALSE);
433
                *(u_long *)info = ntohl(*(u_long *)(ct->ct_mcall +
434
                                                3 * BYTES_PER_XDR_UNIT));
435
                break;
436
        case CLSET_PROG:
437
                if (info == NULL)
438
                        return(FALSE);
439
                *(u_long *)(ct->ct_mcall + 3 * BYTES_PER_XDR_UNIT)
440
                                = htonl(*(u_long *)info);
441
                break;
442
        case CLGET_LOCAL_ADDR:
443
                len = sizeof(struct sockaddr);
444
                if (getsockname(ct->ct_sock, (struct sockaddr *)info, &len) <0)
445
                        return(FALSE);
446
                break;
447
        case CLGET_RETRY_TIMEOUT:
448
        case CLSET_RETRY_TIMEOUT:
449
        case CLGET_SVC_ADDR:
450
        case CLSET_SVC_ADDR:
451
        case CLSET_PUSH_TIMOD:
452
        case CLSET_POP_TIMOD:
453
        default:
454
                return (FALSE);
455
        }
456
        return (TRUE);
457
}
458
 
459
 
460
static void
461
clntunix_destroy(h)
462
        CLIENT *h;
463
{
464
        register struct ct_data *ct =
465
            (struct ct_data *) h->cl_private;
466
 
467
        if (ct->ct_closeit) {
468
                (void)_close(ct->ct_sock);
469
        }
470
        XDR_DESTROY(&(ct->ct_xdrs));
471
        mem_free((caddr_t)ct, sizeof(struct ct_data));
472
        mem_free((caddr_t)h, sizeof(CLIENT));
473
}
474
 
475
/*
476
 * read() and write() are replaced with recvmsg()/sendmsg() so that
477
 * we can pass ancillary control data. In this case, the data constists
478
 * of credential information which the kernel will fill in for us.
479
 * XXX: This code is specific to FreeBSD and will not work on other
480
 * platforms without the requisite kernel modifications.
481
 */
482
struct cmessage {
483
        struct cmsghdr cmsg;
484
        struct cmsgcred cmcred;
485
};
486
 
487
static int __msgread(sock, buf, cnt)
488
        int sock;
489
        void *buf;
490
        size_t cnt;
491
{
492
        struct iovec iov[1];
493
        struct msghdr msg;
494
        struct cmessage cm;
495
 
496
        bzero((char *)&cm, sizeof(cm));
497
        iov[0].iov_base = buf;
498
        iov[0].iov_len = cnt;
499
 
500
        msg.msg_iov = iov;
501
        msg.msg_iovlen = 1;
502
        msg.msg_name = NULL;
503
        msg.msg_namelen = 0;
504
        msg.msg_control = (caddr_t)&cm;
505
        msg.msg_controllen = sizeof(struct cmessage);
506
        msg.msg_flags = 0;
507
 
508
        return(recvmsg(sock, &msg, 0));
509
}
510
 
511
static int __msgwrite(sock, buf, cnt)
512
        int sock;
513
        void *buf;
514
        size_t cnt;
515
{
516
        struct iovec iov[1];
517
        struct msghdr msg;
518
        struct cmessage cm;
519
 
520
        bzero((char *)&cm, sizeof(cm));
521
        iov[0].iov_base = buf;
522
        iov[0].iov_len = cnt;
523
 
524
        cm.cmsg.cmsg_type = SCM_CREDS;
525
        cm.cmsg.cmsg_level = SOL_SOCKET;
526
        cm.cmsg.cmsg_len = sizeof(struct cmessage);
527
 
528
        msg.msg_iov = iov;
529
        msg.msg_iovlen = 1;
530
        msg.msg_name = NULL;
531
        msg.msg_namelen = 0;
532
        msg.msg_control = (caddr_t)&cm;
533
        msg.msg_controllen = sizeof(struct cmessage);
534
        msg.msg_flags = 0;
535
 
536
        return(sendmsg(sock, &msg, 0));
537
}
538
 
539
/*
540
 * Interface between xdr serializer and unix connection.
541
 * Behaves like the system calls, read & write, but keeps some error state
542
 * around for the rpc level.
543
 */
544
static int
545
readunix(ct, buf, len)
546
        register struct ct_data *ct;
547
        caddr_t buf;
548
        register int len;
549
{
550
        fd_set *fds, readfds;
551
        struct timeval start, after, duration, delta, tmp, tv;
552
        int r, save_errno;
553
 
554
        if (len == 0)
555
                return (0);
556
 
557
        if (ct->ct_sock + 1 > FD_SETSIZE) {
558
                int bytes = howmany(ct->ct_sock + 1, NFDBITS) * sizeof(fd_mask);
559
                fds = (fd_set *)malloc(bytes);
560
                if (fds == NULL)
561
                        return (-1);
562
                memset(fds, 0, bytes);
563
        } else {
564
                fds = &readfds;
565
                FD_ZERO(fds);
566
        }
567
 
568
        gettimeofday(&start, NULL);
569
        delta = ct->ct_wait;
570
        while (TRUE) {
571
                /* XXX we know the other bits are still clear */
572
                FD_SET(ct->ct_sock, fds);
573
                tv = delta;     /* in case select writes back */
574
                r = select(ct->ct_sock+1, fds, NULL, NULL, &tv);
575
                save_errno = errno;
576
 
577
                gettimeofday(&after, NULL);
578
                timersub(&start, &after, &duration);
579
                timersub(&delta, &duration, &tmp);
580
                delta = tmp;
581
                if (delta.tv_sec < 0 || !timerisset(&delta))
582
                        r = 0;
583
 
584
                switch (r) {
585
                case 0:
586
                        if (fds != &readfds)
587
                                free(fds);
588
                        ct->ct_error.re_status = RPC_TIMEDOUT;
589
                        return (-1);
590
 
591
                case -1:
592
                        if (errno == EINTR)
593
                                continue;
594
                        if (fds != &readfds)
595
                                free(fds);
596
                        ct->ct_error.re_status = RPC_CANTRECV;
597
                        ct->ct_error.re_errno = save_errno;
598
                        return (-1);
599
                }
600
                break;
601
        }
602
        switch (len = __msgread(ct->ct_sock, buf, len)) {
603
 
604
        case 0:
605
                /* premature eof */
606
                ct->ct_error.re_errno = ECONNRESET;
607
                ct->ct_error.re_status = RPC_CANTRECV;
608
                len = -1;  /* it's really an error */
609
                break;
610
 
611
        case -1:
612
                ct->ct_error.re_errno = errno;
613
                ct->ct_error.re_status = RPC_CANTRECV;
614
                break;
615
        }
616
        return (len);
617
}
618
 
619
static int
620
writeunix(ct, buf, len)
621
        struct ct_data *ct;
622
        caddr_t buf;
623
        int len;
624
{
625
        register int i, cnt;
626
 
627
        for (cnt = len; cnt > 0; cnt -= i, buf += i) {
628
                if ((i = __msgwrite(ct->ct_sock, buf, cnt)) == -1) {
629
                        ct->ct_error.re_errno = errno;
630
                        ct->ct_error.re_status = RPC_CANTSEND;
631
                        return (-1);
632
                }
633
        }
634
        return (len);
635
}

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