1 /* Blue Sky: File Systems in the Cloud
3 * Copyright (C) 2009 The Regents of the University of California
4 * Written by Michael Vrable <mvrable@cs.ucsd.edu>
9 /* RPC handling: registration, marshalling and unmarshalling of messages. For
10 * now this uses the standard Sun RPC mechanisms in the standard C library.
11 * Later, it might be changed to use something better. Much of this code was
12 * generated with rpcgen from the XDR specifications, but has been hand-edited
15 #include "mount_prot.h"
16 #include "nfs3_prot.h"
19 #include <rpc/pmap_clnt.h>
22 #include <sys/socket.h>
23 #include <netinet/in.h>
24 #include <netinet/ip.h>
29 /* TCP port number to use for NFS protocol. (Should be 2049.) */
30 #define NFS_SERVICE_PORT 2051
32 /* Maximum size of a single RPC message that we will accept (8 MB). */
33 #define MAX_RPC_MSGSIZE (8 << 20)
36 mount_program_3(struct svc_req *rqstp, register SVCXPRT *transp)
39 dirpath mountproc3_mnt_3_arg;
40 dirpath mountproc3_umnt_3_arg;
43 xdrproc_t _xdr_argument, _xdr_result;
44 char *(*local)(char *, struct svc_req *);
46 switch (rqstp->rq_proc) {
48 _xdr_argument = (xdrproc_t) xdr_void;
49 _xdr_result = (xdrproc_t) xdr_void;
50 local = (char *(*)(char *, struct svc_req *)) mountproc3_null_3_svc;
54 _xdr_argument = (xdrproc_t) xdr_dirpath;
55 _xdr_result = (xdrproc_t) xdr_mountres3;
56 local = (char *(*)(char *, struct svc_req *)) mountproc3_mnt_3_svc;
60 _xdr_argument = (xdrproc_t) xdr_void;
61 _xdr_result = (xdrproc_t) xdr_mountlist;
62 local = (char *(*)(char *, struct svc_req *)) mountproc3_dump_3_svc;
66 _xdr_argument = (xdrproc_t) xdr_dirpath;
67 _xdr_result = (xdrproc_t) xdr_void;
68 local = (char *(*)(char *, struct svc_req *)) mountproc3_umnt_3_svc;
71 case MOUNTPROC3_UMNTALL:
72 _xdr_argument = (xdrproc_t) xdr_void;
73 _xdr_result = (xdrproc_t) xdr_void;
74 local = (char *(*)(char *, struct svc_req *)) mountproc3_umntall_3_svc;
77 case MOUNTPROC3_EXPORT:
78 _xdr_argument = (xdrproc_t) xdr_void;
79 _xdr_result = (xdrproc_t) xdr_exports;
80 local = (char *(*)(char *, struct svc_req *)) mountproc3_export_3_svc;
84 svcerr_noproc (transp);
87 memset ((char *)&argument, 0, sizeof (argument));
88 if (!svc_getargs (transp, (xdrproc_t) _xdr_argument, (caddr_t) &argument)) {
89 svcerr_decode (transp);
92 result = (*local)((char *)&argument, rqstp);
93 if (result != NULL && !svc_sendreply(transp, (xdrproc_t) _xdr_result, result)) {
94 svcerr_systemerr (transp);
96 if (!svc_freeargs (transp, (xdrproc_t) _xdr_argument, (caddr_t) &argument)) {
97 fprintf (stderr, "%s", "unable to free arguments");
107 uint32_t verf_flavor;
109 uint32_t accept_stat;
112 static void async_rpc_write(RPCConnection *rpc,
113 const char *buf, gsize len);
115 struct rpc_fail_reply {
119 uint32_t verf_flavor;
121 uint32_t accept_stat;
124 /* Routines for XDR-encoding to a growable string. */
125 static bool_t xdr_string_putlong(XDR *xdrs, const long *lp)
127 GString *str = (GString *)xdrs->x_private;
128 uint32_t data = htonl(*lp);
129 g_string_set_size(str, str->len + 4);
130 memcpy(str->str + str->len - 4, &data, 4);
134 static bool_t xdr_string_putbytes(XDR *xdrs, const char *addr, u_int len)
136 GString *str = (GString *)xdrs->x_private;
137 g_string_set_size(str, str->len + len);
138 memcpy(str->str + str->len - len, addr, len);
142 static u_int xdr_string_getpos(const XDR *xdrs)
144 GString *str = (GString *)xdrs->x_private;
148 static bool_t xdr_string_putint32(XDR *xdrs, const int32_t *ip)
150 GString *str = (GString *)xdrs->x_private;
151 uint32_t data = htonl(*ip);
152 g_string_set_size(str, str->len + 4);
153 memcpy(str->str + str->len - 4, &data, 4);
157 static int32_t *xdr_string_inline(XDR *xdrs, u_int len)
159 GString *str = (GString *)xdrs->x_private;
160 g_string_set_size(str, str->len + len);
161 return (int32_t *)(str->str + str->len - len);
164 static void xdr_string_destroy(XDR *xdrs)
168 static struct xdr_ops xdr_string_ops = {
169 .x_putlong = xdr_string_putlong,
170 .x_putbytes = xdr_string_putbytes,
171 .x_getpostn = xdr_string_getpos,
172 .x_putint32 = xdr_string_putint32,
173 .x_inline = xdr_string_inline,
174 .x_destroy = xdr_string_destroy,
177 static void xdr_string_create(XDR *xdrs, GString *string, enum xdr_op op)
180 xdrs->x_ops = &xdr_string_ops;
181 xdrs->x_private = (char *)string;
187 async_rpc_send_failure(RPCRequest *req, enum accept_stat stat)
189 struct rpc_fail_reply header;
191 header.xid = htonl(req->xid);
192 header.type = htonl(1); /* REPLY */
193 header.stat = htonl(MSG_ACCEPTED);
194 header.verf_flavor = 0;
196 header.accept_stat = htonl(stat);
198 uint32_t fragment = htonl(sizeof(header) | 0x80000000);
199 async_rpc_write(req->connection, (const char *)&fragment, sizeof(fragment));
200 async_rpc_write(req->connection, (const char *)&header, sizeof(header));
201 g_io_channel_flush(req->connection->channel, NULL);
203 if (req->args != NULL) {
206 xdrmem_create(&xdr, buf, sizeof(buf), XDR_FREE);
207 if (!req->xdr_args_free(&xdr, req->args)) {
208 fprintf(stderr, "unable to free arguments");
212 if (req->raw_args != NULL)
213 g_string_free(req->raw_args, TRUE);
215 while (req->cleanup != NULL) {
216 struct cleanup_list *c = req->cleanup;
217 req->cleanup = c->next;
226 async_rpc_send_reply(RPCRequest *req, void *result)
228 bluesky_time_hires time_end;
230 GString *str = g_string_new("");
232 xdr_string_create(&xdr_out, str, XDR_ENCODE);
233 if (!req->xdr_result(&xdr_out, result)) {
234 async_rpc_send_failure(req, SYSTEM_ERR);
235 g_string_free(str, TRUE);
239 struct rpc_reply header;
240 header.xid = htonl(req->xid);
241 header.type = htonl(1); /* REPLY */
242 header.stat = htonl(MSG_ACCEPTED);
243 header.verf_flavor = 0;
245 header.accept_stat = 0;
247 gsize msg_size = str->len;
248 uint32_t fragment = htonl((msg_size + sizeof(header)) | 0x80000000);
249 async_rpc_write(req->connection, (const char *)&fragment, sizeof(fragment));
250 async_rpc_write(req->connection, (const char *)&header, sizeof(header));
251 async_rpc_write(req->connection, str->str, str->len);
252 g_io_channel_flush(req->connection->channel, NULL);
254 time_end = bluesky_now_hires();
256 printf("RPC[%"PRIx32"]: time = %"PRId64" ns\n",
257 req->xid, time_end - req->time_start);
260 g_string_free(str, TRUE);
262 if (req->args != NULL) {
265 xdrmem_create(&xdr, buf, sizeof(buf), XDR_FREE);
266 if (!req->xdr_args_free(&xdr, req->args)) {
267 fprintf(stderr, "unable to free arguments");
271 if (req->raw_args != NULL)
272 g_string_free(req->raw_args, TRUE);
274 while (req->cleanup != NULL) {
275 struct cleanup_list *c = req->cleanup;
276 req->cleanup = c->next;
285 nfs_program_3(RPCRequest *req)
287 RPCConnection *connection = req->connection;
288 uint32_t xid = req->xid;
289 const char *msg_buf = req->raw_args->str + req->raw_args_header_bytes;
290 size_t msg_len = req->raw_args->len - req->raw_args_header_bytes;
293 nfs_fh3 nfsproc3_getattr_3_arg;
294 setattr3args nfsproc3_setattr_3_arg;
295 diropargs3 nfsproc3_lookup_3_arg;
296 access3args nfsproc3_access_3_arg;
297 nfs_fh3 nfsproc3_readlink_3_arg;
298 read3args nfsproc3_read_3_arg;
299 write3args nfsproc3_write_3_arg;
300 create3args nfsproc3_create_3_arg;
301 mkdir3args nfsproc3_mkdir_3_arg;
302 symlink3args nfsproc3_symlink_3_arg;
303 mknod3args nfsproc3_mknod_3_arg;
304 diropargs3 nfsproc3_remove_3_arg;
305 diropargs3 nfsproc3_rmdir_3_arg;
306 rename3args nfsproc3_rename_3_arg;
307 link3args nfsproc3_link_3_arg;
308 readdir3args nfsproc3_readdir_3_arg;
309 readdirplus3args nfsproc3_readdirplus_3_arg;
310 nfs_fh3 nfsproc3_fsstat_3_arg;
311 nfs_fh3 nfsproc3_fsinfo_3_arg;
312 nfs_fh3 nfsproc3_pathconf_3_arg;
313 commit3args nfsproc3_commit_3_arg;
316 xdrproc_t _xdr_argument, _xdr_result;
317 char *(*local)(char *, RPCRequest *);
319 printf("Dispatched NFS RPC message type %d\n", req->req_proc);
321 switch (req->req_proc) {
323 _xdr_argument = (xdrproc_t) xdr_void;
324 _xdr_result = (xdrproc_t) xdr_void;
325 local = (char *(*)(char *, RPCRequest *)) nfsproc3_null_3_svc;
328 case NFSPROC3_GETATTR:
329 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
330 _xdr_result = (xdrproc_t) xdr_getattr3res;
331 local = (char *(*)(char *, RPCRequest *)) nfsproc3_getattr_3_svc;
334 case NFSPROC3_SETATTR:
335 _xdr_argument = (xdrproc_t) xdr_setattr3args;
336 _xdr_result = (xdrproc_t) xdr_wccstat3;
337 local = (char *(*)(char *, RPCRequest *)) nfsproc3_setattr_3_svc;
340 case NFSPROC3_LOOKUP:
341 _xdr_argument = (xdrproc_t) xdr_diropargs3;
342 _xdr_result = (xdrproc_t) xdr_lookup3res;
343 local = (char *(*)(char *, RPCRequest *)) nfsproc3_lookup_3_svc;
346 case NFSPROC3_ACCESS:
347 _xdr_argument = (xdrproc_t) xdr_access3args;
348 _xdr_result = (xdrproc_t) xdr_access3res;
349 local = (char *(*)(char *, RPCRequest *)) nfsproc3_access_3_svc;
352 case NFSPROC3_READLINK:
353 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
354 _xdr_result = (xdrproc_t) xdr_readlink3res;
355 local = (char *(*)(char *, RPCRequest *)) nfsproc3_readlink_3_svc;
359 _xdr_argument = (xdrproc_t) xdr_read3args;
360 _xdr_result = (xdrproc_t) xdr_read3res;
361 local = (char *(*)(char *, RPCRequest *)) nfsproc3_read_3_svc;
365 _xdr_argument = (xdrproc_t) xdr_write3args;
366 _xdr_result = (xdrproc_t) xdr_write3res;
367 local = (char *(*)(char *, RPCRequest *)) nfsproc3_write_3_svc;
370 case NFSPROC3_CREATE:
371 _xdr_argument = (xdrproc_t) xdr_create3args;
372 _xdr_result = (xdrproc_t) xdr_diropres3;
373 local = (char *(*)(char *, RPCRequest *)) nfsproc3_create_3_svc;
377 _xdr_argument = (xdrproc_t) xdr_mkdir3args;
378 _xdr_result = (xdrproc_t) xdr_diropres3;
379 local = (char *(*)(char *, RPCRequest *)) nfsproc3_mkdir_3_svc;
382 case NFSPROC3_SYMLINK:
383 _xdr_argument = (xdrproc_t) xdr_symlink3args;
384 _xdr_result = (xdrproc_t) xdr_diropres3;
385 local = (char *(*)(char *, RPCRequest *)) nfsproc3_symlink_3_svc;
389 _xdr_argument = (xdrproc_t) xdr_mknod3args;
390 _xdr_result = (xdrproc_t) xdr_diropres3;
391 local = (char *(*)(char *, RPCRequest *)) nfsproc3_mknod_3_svc;
394 case NFSPROC3_REMOVE:
395 _xdr_argument = (xdrproc_t) xdr_diropargs3;
396 _xdr_result = (xdrproc_t) xdr_wccstat3;
397 local = (char *(*)(char *, RPCRequest *)) nfsproc3_remove_3_svc;
401 _xdr_argument = (xdrproc_t) xdr_diropargs3;
402 _xdr_result = (xdrproc_t) xdr_wccstat3;
403 local = (char *(*)(char *, RPCRequest *)) nfsproc3_rmdir_3_svc;
406 case NFSPROC3_RENAME:
407 _xdr_argument = (xdrproc_t) xdr_rename3args;
408 _xdr_result = (xdrproc_t) xdr_rename3res;
409 local = (char *(*)(char *, RPCRequest *)) nfsproc3_rename_3_svc;
413 _xdr_argument = (xdrproc_t) xdr_link3args;
414 _xdr_result = (xdrproc_t) xdr_link3res;
415 local = (char *(*)(char *, RPCRequest *)) nfsproc3_link_3_svc;
418 case NFSPROC3_READDIR:
419 _xdr_argument = (xdrproc_t) xdr_readdir3args;
420 _xdr_result = (xdrproc_t) xdr_readdir3res;
421 local = (char *(*)(char *, RPCRequest *)) nfsproc3_readdir_3_svc;
424 case NFSPROC3_READDIRPLUS:
425 _xdr_argument = (xdrproc_t) xdr_readdirplus3args;
426 _xdr_result = (xdrproc_t) xdr_readdirplus3res;
427 local = (char *(*)(char *, RPCRequest *)) nfsproc3_readdirplus_3_svc;
430 case NFSPROC3_FSSTAT:
431 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
432 _xdr_result = (xdrproc_t) xdr_fsstat3res;
433 local = (char *(*)(char *, RPCRequest *)) nfsproc3_fsstat_3_svc;
436 case NFSPROC3_FSINFO:
437 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
438 _xdr_result = (xdrproc_t) xdr_fsinfo3res;
439 local = (char *(*)(char *, RPCRequest *)) nfsproc3_fsinfo_3_svc;
442 case NFSPROC3_PATHCONF:
443 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
444 _xdr_result = (xdrproc_t) xdr_pathconf3res;
445 local = (char *(*)(char *, RPCRequest *)) nfsproc3_pathconf_3_svc;
448 case NFSPROC3_COMMIT:
449 _xdr_argument = (xdrproc_t) xdr_commit3args;
450 _xdr_result = (xdrproc_t) xdr_commit3res;
451 local = (char *(*)(char *, RPCRequest *)) nfsproc3_commit_3_svc;
455 async_rpc_send_failure(req, PROC_UNAVAIL);
459 /* Decode incoming message */
460 req->xdr_args_free = _xdr_argument;
461 req->args = g_new0(union argtype, 1);
463 xdrmem_create(&xdr_in, (char *)msg_buf, msg_len, XDR_DECODE);
464 if (!_xdr_argument(&xdr_in, req->args)) {
465 async_rpc_send_failure(req, GARBAGE_ARGS);
466 fprintf(stderr, "RPC decode error!\n");
470 /* Perform the call. */
471 req->xdr_result = _xdr_result;
472 result = (*local)((char *)req->args, req);
474 bluesky_debug_dump(fs);
479 /* Enhanced, asynchronous-friendly RPC layer. This is a replacement for the
480 * built-in sunrpc parsing and dispatch that will allow for processing multiple
481 * requests at the same time. */
482 static GMainContext *main_context;
483 static GMainLoop *main_loop;
485 static gboolean async_flushd(gpointer data)
487 bluesky_flushd_invoke(fs);
491 static async_rpc_init()
493 main_context = g_main_context_new();
494 main_loop = g_main_loop_new(main_context, FALSE);
496 /* Arrange to have the cache writeback code run every five seconds. */
497 GSource *source = g_timeout_source_new_seconds(5);
498 g_source_set_callback(source, async_flushd, NULL, NULL);
499 g_source_attach(source, main_context);
500 g_source_unref(source);
503 struct rpc_call_header {
517 /* Decode an RPC message and process it. Returns a boolean indicating whether
518 * the message could be processed; if false, an unrecoverable error occurred
519 * and the transport should be closed. */
520 static gboolean async_rpc_dispatch(RPCConnection *rpc)
522 bluesky_time_hires time_start = bluesky_now_hires();
524 GString *msg = rpc->msgbuf;
525 const char *buf = msg->str;
527 if (msg->len < sizeof(struct rpc_call_header)) {
528 fprintf(stderr, "Short RPC message: only %zd bytes!\n", msg->len);
532 struct rpc_call_header *header = (struct rpc_call_header *)(msg->str);
533 uint32_t xid = ntohl(header->xid);
535 if (ntohl(header->mtype) != 0) {
536 /* Not an RPC call */
540 if (ntohl(header->rpcvers) != 2) {
544 RPCRequest *req = g_new0(RPCRequest, 1);
545 req->connection = rpc;
546 req->time_start = time_start;
549 if (ntohl(header->prog) != NFS_PROGRAM) {
550 async_rpc_send_failure(req, PROG_UNAVAIL);
552 } else if (ntohl(header->vers) != NFS_V3) {
553 /* FIXME: Should be PROG_MISMATCH */
554 async_rpc_send_failure(req, PROG_UNAVAIL);
558 uint32_t proc = ntohl(header->proc);
560 /* Next, skip over authentication headers. */
561 buf += sizeof(struct rpc_call_header);
562 for (i = 0; i < 2; i++) {
563 struct rpc_auth *auth = (struct rpc_auth *)buf;
564 if (buf - msg->str + sizeof(struct rpc_auth) > msg->len)
567 gsize authsize = ntohl(auth->len) + sizeof(struct rpc_auth);
568 if (authsize > MAX_RPC_MSGSIZE)
574 if (buf - msg->str > msg->len)
578 req->raw_args_header_bytes = buf - msg->str;
579 req->req_proc = ntohl(header->proc);
580 rpc->msgbuf = g_string_new("");
587 /* Write the given data to the RPC socket. */
588 static void async_rpc_write(RPCConnection *rpc,
589 const char *buf, gsize len)
593 switch (g_io_channel_write_chars(rpc->channel, buf, len,
595 case G_IO_STATUS_ERROR:
596 case G_IO_STATUS_EOF:
597 case G_IO_STATUS_AGAIN:
598 fprintf(stderr, "Error writing to socket!\n");
600 case G_IO_STATUS_NORMAL:
607 // g_io_channel_flush(rpc->channel, NULL);
610 static gboolean async_rpc_do_read(GIOChannel *channel,
611 GIOCondition condition,
614 RPCConnection *rpc = (RPCConnection *)data;
616 gsize bytes_to_read = 0; /* Number of bytes to attempt to read. */
618 /* If we have not yet read in the fragment header, do that first. This is
619 * 4 bytes that indicates the number of bytes in the message to follow
620 * (with the high bit set if this is the last fragment making up the
622 if (rpc->frag_len == 0) {
623 bytes_to_read = 4 - rpc->frag_hdr_bytes;
625 bytes_to_read = rpc->frag_len & 0x7fffffff;
628 if (bytes_to_read > MAX_RPC_MSGSIZE
629 || rpc->msgbuf->len + bytes_to_read > MAX_RPC_MSGSIZE)
631 fprintf(stderr, "Excessive fragment size for RPC: %zd bytes\n",
633 g_io_channel_shutdown(rpc->channel, TRUE, NULL);
637 gsize bytes_read = 0;
638 g_string_set_size(rpc->msgbuf, rpc->msgbuf->len + bytes_to_read);
639 char *buf = &rpc->msgbuf->str[rpc->msgbuf->len - bytes_to_read];
640 switch (g_io_channel_read_chars(rpc->channel, buf,
641 bytes_to_read, &bytes_read, NULL)) {
642 case G_IO_STATUS_NORMAL:
644 case G_IO_STATUS_AGAIN:
646 case G_IO_STATUS_EOF:
647 if (bytes_read == bytes_to_read)
649 /* else fall through */
650 case G_IO_STATUS_ERROR:
651 fprintf(stderr, "Unexpected error or end of file on RPC stream %d!\n",
652 g_io_channel_unix_get_fd(rpc->channel));
653 g_io_channel_shutdown(rpc->channel, TRUE, NULL);
657 g_assert(bytes_read >= 0 && bytes_read <= bytes_to_read);
659 g_string_set_size(rpc->msgbuf,
660 rpc->msgbuf->len - (bytes_to_read - bytes_read));
662 if (rpc->frag_len == 0) {
663 /* Handle reading in the fragment header. If we've read the complete
664 * header, store the fragment size. */
665 rpc->frag_hdr_bytes += bytes_read;
666 if (rpc->frag_hdr_bytes == 4) {
667 memcpy((char *)&rpc->frag_len,
668 &rpc->msgbuf->str[rpc->msgbuf->len - 4], 4);
669 rpc->frag_len = ntohl(rpc->frag_len);
670 g_string_set_size(rpc->msgbuf, rpc->msgbuf->len - 4);
671 rpc->frag_hdr_bytes = 0;
674 /* We were reading in the fragment body. */
675 rpc->frag_len -= bytes_read;
677 if (rpc->frag_len = 0x80000000) {
678 /* We have a complete message since this was the last fragment and
679 * there are no more bytes in it. Dispatch the message. */
680 if (!async_rpc_dispatch(rpc)) {
681 fprintf(stderr, "Invalid RPC message, closing channel\n");
682 g_io_channel_shutdown(rpc->channel, TRUE, NULL);
686 g_string_set_size(rpc->msgbuf, 0);
693 static gboolean async_rpc_do_accept(GIOChannel *channel,
694 GIOCondition condition,
697 int fd = g_io_channel_unix_get_fd(channel);
698 struct sockaddr_in addr;
699 socklen_t addrlen = sizeof(addr);
701 g_print("Received new connection on fd %d!\n", fd);
702 int nfd = accept(fd, (struct sockaddr *)&addr, &addrlen);
704 fprintf(stderr, "Error accepting connection: %m\n");
708 RPCConnection *rpc = g_new0(RPCConnection, 1);
709 rpc->channel = g_io_channel_unix_new(nfd);
710 rpc->msgbuf = g_string_new("");
711 g_io_channel_set_encoding(rpc->channel, NULL, NULL);
712 GSource *source = g_io_create_watch(rpc->channel, G_IO_IN);
713 g_source_set_callback(source, (GSourceFunc)async_rpc_do_read,
715 g_source_attach(source, main_context);
716 g_source_unref(source);
721 static async_rpc_register_listening(int fd)
723 GIOChannel *channel = g_io_channel_unix_new(fd);
724 g_io_channel_set_encoding(channel, NULL, NULL);
725 GSource *source = g_io_create_watch(channel, G_IO_IN);
726 g_source_set_callback(source, (GSourceFunc)async_rpc_do_accept,
728 g_source_attach(source, main_context);
729 g_source_unref(source);
732 static gpointer async_rpc_run(gpointer data)
734 g_print("Starting NFS main loop...\n");
735 g_main_loop_run(main_loop);
745 pmap_unset (MOUNT_PROGRAM, MOUNT_V3);
747 transp = svcudp_create(RPC_ANYSOCK);
748 if (transp == NULL) {
749 fprintf(stderr, "%s", "cannot create udp service.");
752 if (!svc_register(transp, MOUNT_PROGRAM, MOUNT_V3, mount_program_3, IPPROTO_UDP)) {
753 fprintf(stderr, "%s", "unable to register (MOUNT_PROGRAM, MOUNT_V3, udp).");
757 transp = svctcp_create(RPC_ANYSOCK, 0, 0);
758 if (transp == NULL) {
759 fprintf(stderr, "%s", "cannot create tcp service.");
762 if (!svc_register(transp, MOUNT_PROGRAM, MOUNT_V3, mount_program_3, IPPROTO_TCP)) {
763 fprintf(stderr, "%s", "unable to register (MOUNT_PROGRAM, MOUNT_V3, tcp).");
767 /* NFS protocol (version 3) */
768 pmap_unset (NFS_PROGRAM, NFS_V3);
770 int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
772 fprintf(stderr, "Unable to create NFS TCP socket: %m\n");
777 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&n, sizeof(n));
779 struct sockaddr_in addr;
780 addr.sin_family = AF_INET;
781 addr.sin_port = htons(NFS_SERVICE_PORT);
782 addr.sin_addr.s_addr = INADDR_ANY;
783 if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
784 fprintf(stderr, "Unable to bind to NFS TCP address: %m\n");
788 if (listen(fd, SOMAXCONN) < 0) {
789 fprintf(stderr, "Unable to listen on NFS TCP socket: %m\n");
793 if (!pmap_set(NFS_PROGRAM, NFS_V3, IPPROTO_TCP, NFS_SERVICE_PORT)) {
794 fprintf(stderr, "Could not register NFS RPC service!\n");
798 async_rpc_register_listening(fd);
800 g_thread_create(async_rpc_run, NULL, TRUE, NULL);