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>
23 #include <sys/socket.h>
24 #include <netinet/in.h>
25 #include <netinet/ip.h>
30 /* TCP port number to use for NFS protocol. (Should be 2049.) */
31 #define NFS_SERVICE_PORT 2051
33 /* Maximum size of a single RPC message that we will accept (8 MB). */
34 #define MAX_RPC_MSGSIZE (8 << 20)
37 mount_program_3(struct svc_req *rqstp, register SVCXPRT *transp)
40 dirpath mountproc3_mnt_3_arg;
41 dirpath mountproc3_umnt_3_arg;
44 xdrproc_t _xdr_argument, _xdr_result;
45 char *(*local)(char *, struct svc_req *);
47 switch (rqstp->rq_proc) {
49 _xdr_argument = (xdrproc_t) xdr_void;
50 _xdr_result = (xdrproc_t) xdr_void;
51 local = (char *(*)(char *, struct svc_req *)) mountproc3_null_3_svc;
55 _xdr_argument = (xdrproc_t) xdr_dirpath;
56 _xdr_result = (xdrproc_t) xdr_mountres3;
57 local = (char *(*)(char *, struct svc_req *)) mountproc3_mnt_3_svc;
61 _xdr_argument = (xdrproc_t) xdr_void;
62 _xdr_result = (xdrproc_t) xdr_mountlist;
63 local = (char *(*)(char *, struct svc_req *)) mountproc3_dump_3_svc;
67 _xdr_argument = (xdrproc_t) xdr_dirpath;
68 _xdr_result = (xdrproc_t) xdr_void;
69 local = (char *(*)(char *, struct svc_req *)) mountproc3_umnt_3_svc;
72 case MOUNTPROC3_UMNTALL:
73 _xdr_argument = (xdrproc_t) xdr_void;
74 _xdr_result = (xdrproc_t) xdr_void;
75 local = (char *(*)(char *, struct svc_req *)) mountproc3_umntall_3_svc;
78 case MOUNTPROC3_EXPORT:
79 _xdr_argument = (xdrproc_t) xdr_void;
80 _xdr_result = (xdrproc_t) xdr_exports;
81 local = (char *(*)(char *, struct svc_req *)) mountproc3_export_3_svc;
85 svcerr_noproc (transp);
88 memset ((char *)&argument, 0, sizeof (argument));
89 if (!svc_getargs (transp, (xdrproc_t) _xdr_argument, (caddr_t) &argument)) {
90 svcerr_decode (transp);
93 result = (*local)((char *)&argument, rqstp);
94 if (result != NULL && !svc_sendreply(transp, (xdrproc_t) _xdr_result, result)) {
95 svcerr_systemerr (transp);
97 if (!svc_freeargs (transp, (xdrproc_t) _xdr_argument, (caddr_t) &argument)) {
98 fprintf (stderr, "%s", "unable to free arguments");
108 uint32_t verf_flavor;
110 uint32_t accept_stat;
113 static void async_rpc_write(RPCConnection *rpc,
114 const char *buf, gsize len);
116 struct rpc_fail_reply {
120 uint32_t verf_flavor;
122 uint32_t accept_stat;
126 async_rpc_send_failure(RPCRequest *req, enum accept_stat stat)
128 struct rpc_fail_reply header;
130 header.xid = htonl(req->xid);
131 header.type = htonl(1); /* REPLY */
132 header.stat = htonl(MSG_ACCEPTED);
133 header.verf_flavor = 0;
135 header.accept_stat = htonl(stat);
137 g_mutex_lock(req->connection->send_lock);
138 uint32_t fragment = htonl(sizeof(header) | 0x80000000);
139 async_rpc_write(req->connection, (const char *)&fragment, sizeof(fragment));
140 async_rpc_write(req->connection, (const char *)&header, sizeof(header));
141 g_io_channel_flush(req->connection->channel, NULL);
142 g_mutex_unlock(req->connection->send_lock);
144 if (req->args != NULL) {
147 xdrmem_create(&xdr, buf, sizeof(buf), XDR_FREE);
148 if (!req->xdr_args_free(&xdr, req->args)) {
149 fprintf(stderr, "unable to free arguments");
154 if (req->raw_args != NULL)
155 g_string_free(req->raw_args, TRUE);
157 while (req->cleanup != NULL) {
158 struct cleanup_list *c = req->cleanup;
159 req->cleanup = c->next;
168 async_rpc_send_reply(RPCRequest *req, void *result)
170 bluesky_time_hires time_end;
172 GString *str = g_string_new("");
174 xdr_string_create(&xdr_out, str, XDR_ENCODE);
175 if (!req->xdr_result(&xdr_out, result)) {
176 async_rpc_send_failure(req, SYSTEM_ERR);
177 g_string_free(str, TRUE);
181 struct rpc_reply header;
182 header.xid = htonl(req->xid);
183 header.type = htonl(1); /* REPLY */
184 header.stat = htonl(MSG_ACCEPTED);
185 header.verf_flavor = 0;
187 header.accept_stat = 0;
189 g_mutex_lock(req->connection->send_lock);
190 gsize msg_size = str->len;
191 uint32_t fragment = htonl((msg_size + sizeof(header)) | 0x80000000);
192 async_rpc_write(req->connection, (const char *)&fragment, sizeof(fragment));
193 async_rpc_write(req->connection, (const char *)&header, sizeof(header));
194 async_rpc_write(req->connection, str->str, str->len);
195 g_io_channel_flush(req->connection->channel, NULL);
196 g_mutex_unlock(req->connection->send_lock);
198 time_end = bluesky_now_hires();
200 printf("RPC[%"PRIx32"]: time = %"PRId64" ns\n",
201 req->xid, time_end - req->time_start);
204 g_string_free(str, TRUE);
206 if (req->args != NULL) {
209 xdrmem_create(&xdr, buf, sizeof(buf), XDR_FREE);
210 if (!req->xdr_args_free(&xdr, req->args)) {
211 fprintf(stderr, "unable to free arguments");
216 if (req->raw_args != NULL)
217 g_string_free(req->raw_args, TRUE);
219 while (req->cleanup != NULL) {
220 struct cleanup_list *c = req->cleanup;
221 req->cleanup = c->next;
229 static const char *nfs_proc_names[] = {
230 [NFSPROC3_NULL] = "NULL",
231 [NFSPROC3_GETATTR] = "GETATTR",
232 [NFSPROC3_SETATTR] = "SETATTR",
233 [NFSPROC3_LOOKUP] = "LOOKUP",
234 [NFSPROC3_ACCESS] = "ACCESS",
235 [NFSPROC3_READLINK] = "READLINK",
236 [NFSPROC3_READ] = "READ",
237 [NFSPROC3_WRITE] = "WRITE",
238 [NFSPROC3_CREATE] = "CREATE",
239 [NFSPROC3_MKDIR] = "MKDIR",
240 [NFSPROC3_SYMLINK] = "SYMLINK",
241 [NFSPROC3_MKNOD] = "MKNOD",
242 [NFSPROC3_REMOVE] = "REMOVE",
243 [NFSPROC3_RMDIR] = "RMDIR",
244 [NFSPROC3_RENAME] = "RENAME",
245 [NFSPROC3_LINK] = "LINK",
246 [NFSPROC3_READDIR] = "READDIR",
247 [NFSPROC3_READDIRPLUS] = "READDIRPLUS",
248 [NFSPROC3_FSSTAT] = "FSSTAT",
249 [NFSPROC3_FSINFO] = "FSINFO",
250 [NFSPROC3_PATHCONF] = "PATHCONF",
251 [NFSPROC3_COMMIT] = "COMMIT",
255 nfs_program_3(RPCRequest *req)
257 RPCConnection *connection = req->connection;
258 uint32_t xid = req->xid;
259 const char *msg_buf = req->raw_args->str + req->raw_args_header_bytes;
260 size_t msg_len = req->raw_args->len - req->raw_args_header_bytes;
263 nfs_fh3 nfsproc3_getattr_3_arg;
264 setattr3args nfsproc3_setattr_3_arg;
265 diropargs3 nfsproc3_lookup_3_arg;
266 access3args nfsproc3_access_3_arg;
267 nfs_fh3 nfsproc3_readlink_3_arg;
268 read3args nfsproc3_read_3_arg;
269 write3args nfsproc3_write_3_arg;
270 create3args nfsproc3_create_3_arg;
271 mkdir3args nfsproc3_mkdir_3_arg;
272 symlink3args nfsproc3_symlink_3_arg;
273 mknod3args nfsproc3_mknod_3_arg;
274 diropargs3 nfsproc3_remove_3_arg;
275 diropargs3 nfsproc3_rmdir_3_arg;
276 rename3args nfsproc3_rename_3_arg;
277 link3args nfsproc3_link_3_arg;
278 readdir3args nfsproc3_readdir_3_arg;
279 readdirplus3args nfsproc3_readdirplus_3_arg;
280 nfs_fh3 nfsproc3_fsstat_3_arg;
281 nfs_fh3 nfsproc3_fsinfo_3_arg;
282 nfs_fh3 nfsproc3_pathconf_3_arg;
283 commit3args nfsproc3_commit_3_arg;
286 xdrproc_t _xdr_argument, _xdr_result;
287 char *(*local)(char *, RPCRequest *);
289 if (req->req_proc < sizeof(nfs_proc_names) / sizeof(const char *)) {
290 printf("Dispatched NFS RPC message type %s\n",
291 nfs_proc_names[req->req_proc]);
293 printf("Dispatched unknown NFS RPC message type %d\n", req->req_proc);
296 switch (req->req_proc) {
298 _xdr_argument = (xdrproc_t) xdr_void;
299 _xdr_result = (xdrproc_t) xdr_void;
300 local = (char *(*)(char *, RPCRequest *)) nfsproc3_null_3_svc;
303 case NFSPROC3_GETATTR:
304 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
305 _xdr_result = (xdrproc_t) xdr_getattr3res;
306 local = (char *(*)(char *, RPCRequest *)) nfsproc3_getattr_3_svc;
309 case NFSPROC3_SETATTR:
310 _xdr_argument = (xdrproc_t) xdr_setattr3args;
311 _xdr_result = (xdrproc_t) xdr_wccstat3;
312 local = (char *(*)(char *, RPCRequest *)) nfsproc3_setattr_3_svc;
315 case NFSPROC3_LOOKUP:
316 _xdr_argument = (xdrproc_t) xdr_diropargs3;
317 _xdr_result = (xdrproc_t) xdr_lookup3res;
318 local = (char *(*)(char *, RPCRequest *)) nfsproc3_lookup_3_svc;
321 case NFSPROC3_ACCESS:
322 _xdr_argument = (xdrproc_t) xdr_access3args;
323 _xdr_result = (xdrproc_t) xdr_access3res;
324 local = (char *(*)(char *, RPCRequest *)) nfsproc3_access_3_svc;
327 case NFSPROC3_READLINK:
328 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
329 _xdr_result = (xdrproc_t) xdr_readlink3res;
330 local = (char *(*)(char *, RPCRequest *)) nfsproc3_readlink_3_svc;
334 _xdr_argument = (xdrproc_t) xdr_read3args;
335 _xdr_result = (xdrproc_t) xdr_read3res;
336 local = (char *(*)(char *, RPCRequest *)) nfsproc3_read_3_svc;
340 _xdr_argument = (xdrproc_t) xdr_write3args;
341 _xdr_result = (xdrproc_t) xdr_write3res;
342 local = (char *(*)(char *, RPCRequest *)) nfsproc3_write_3_svc;
345 case NFSPROC3_CREATE:
346 _xdr_argument = (xdrproc_t) xdr_create3args;
347 _xdr_result = (xdrproc_t) xdr_diropres3;
348 local = (char *(*)(char *, RPCRequest *)) nfsproc3_create_3_svc;
352 _xdr_argument = (xdrproc_t) xdr_mkdir3args;
353 _xdr_result = (xdrproc_t) xdr_diropres3;
354 local = (char *(*)(char *, RPCRequest *)) nfsproc3_mkdir_3_svc;
357 case NFSPROC3_SYMLINK:
358 _xdr_argument = (xdrproc_t) xdr_symlink3args;
359 _xdr_result = (xdrproc_t) xdr_diropres3;
360 local = (char *(*)(char *, RPCRequest *)) nfsproc3_symlink_3_svc;
364 _xdr_argument = (xdrproc_t) xdr_mknod3args;
365 _xdr_result = (xdrproc_t) xdr_diropres3;
366 local = (char *(*)(char *, RPCRequest *)) nfsproc3_mknod_3_svc;
369 case NFSPROC3_REMOVE:
370 _xdr_argument = (xdrproc_t) xdr_diropargs3;
371 _xdr_result = (xdrproc_t) xdr_wccstat3;
372 local = (char *(*)(char *, RPCRequest *)) nfsproc3_remove_3_svc;
376 _xdr_argument = (xdrproc_t) xdr_diropargs3;
377 _xdr_result = (xdrproc_t) xdr_wccstat3;
378 local = (char *(*)(char *, RPCRequest *)) nfsproc3_rmdir_3_svc;
381 case NFSPROC3_RENAME:
382 _xdr_argument = (xdrproc_t) xdr_rename3args;
383 _xdr_result = (xdrproc_t) xdr_rename3res;
384 local = (char *(*)(char *, RPCRequest *)) nfsproc3_rename_3_svc;
388 _xdr_argument = (xdrproc_t) xdr_link3args;
389 _xdr_result = (xdrproc_t) xdr_link3res;
390 local = (char *(*)(char *, RPCRequest *)) nfsproc3_link_3_svc;
393 case NFSPROC3_READDIR:
394 _xdr_argument = (xdrproc_t) xdr_readdir3args;
395 _xdr_result = (xdrproc_t) xdr_readdir3res;
396 local = (char *(*)(char *, RPCRequest *)) nfsproc3_readdir_3_svc;
399 case NFSPROC3_READDIRPLUS:
400 _xdr_argument = (xdrproc_t) xdr_readdirplus3args;
401 _xdr_result = (xdrproc_t) xdr_readdirplus3res;
402 local = (char *(*)(char *, RPCRequest *)) nfsproc3_readdirplus_3_svc;
405 case NFSPROC3_FSSTAT:
406 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
407 _xdr_result = (xdrproc_t) xdr_fsstat3res;
408 local = (char *(*)(char *, RPCRequest *)) nfsproc3_fsstat_3_svc;
411 case NFSPROC3_FSINFO:
412 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
413 _xdr_result = (xdrproc_t) xdr_fsinfo3res;
414 local = (char *(*)(char *, RPCRequest *)) nfsproc3_fsinfo_3_svc;
417 case NFSPROC3_PATHCONF:
418 _xdr_argument = (xdrproc_t) xdr_nfs_fh3;
419 _xdr_result = (xdrproc_t) xdr_pathconf3res;
420 local = (char *(*)(char *, RPCRequest *)) nfsproc3_pathconf_3_svc;
423 case NFSPROC3_COMMIT:
424 _xdr_argument = (xdrproc_t) xdr_commit3args;
425 _xdr_result = (xdrproc_t) xdr_commit3res;
426 local = (char *(*)(char *, RPCRequest *)) nfsproc3_commit_3_svc;
430 async_rpc_send_failure(req, PROC_UNAVAIL);
434 /* Decode incoming message */
435 req->xdr_args_free = _xdr_argument;
436 req->args = g_new0(union argtype, 1);
438 xdrmem_create(&xdr_in, (char *)msg_buf, msg_len, XDR_DECODE);
439 if (!_xdr_argument(&xdr_in, req->args)) {
440 async_rpc_send_failure(req, GARBAGE_ARGS);
441 fprintf(stderr, "RPC decode error!\n");
445 /* Perform the call. */
446 req->xdr_result = _xdr_result;
447 result = (*local)((char *)req->args, req);
452 /* Enhanced, asynchronous-friendly RPC layer. This is a replacement for the
453 * built-in sunrpc parsing and dispatch that will allow for processing multiple
454 * requests at the same time. */
455 static GMainContext *main_context;
456 static GMainLoop *main_loop;
458 static GThreadPool *rpc_thread_pool;
460 static volatile int fs_dump_requested = 0;
462 static void sig_handler(int sig)
464 if (sig == SIGUSR1) {
465 fs_dump_requested = 1;
469 static gboolean async_flushd(gpointer data)
471 if (fs_dump_requested) {
472 bluesky_debug_dump(fs);
473 fs_dump_requested = 0;
476 bluesky_flushd_invoke(fs);
480 static void async_rpc_task(gpointer data, gpointer user_data)
482 nfs_program_3((RPCRequest *)data);
485 static async_rpc_init()
487 main_context = g_main_context_new();
488 main_loop = g_main_loop_new(main_context, FALSE);
490 rpc_thread_pool = g_thread_pool_new(async_rpc_task, NULL, -1, FALSE, NULL);
492 /* Arrange to have the cache writeback code run every five seconds. */
493 GSource *source = g_timeout_source_new_seconds(5);
494 g_source_set_callback(source, async_flushd, NULL, NULL);
495 g_source_attach(source, main_context);
496 g_source_unref(source);
498 /* Signal USR1 is used to request a debugging dump of filesyste info */
500 sa.sa_handler = sig_handler;
501 sigemptyset(&sa.sa_mask);
502 sa.sa_flags = SA_RESTART;
503 if (sigaction(SIGUSR1, &sa, NULL) < 0) {
508 struct rpc_call_header {
522 /* Decode an RPC message and process it. Returns a boolean indicating whether
523 * the message could be processed; if false, an unrecoverable error occurred
524 * and the transport should be closed. */
525 static gboolean async_rpc_dispatch(RPCConnection *rpc)
527 bluesky_time_hires time_start = bluesky_now_hires();
529 GString *msg = rpc->msgbuf;
530 const char *buf = msg->str;
532 if (msg->len < sizeof(struct rpc_call_header)) {
533 fprintf(stderr, "Short RPC message: only %zd bytes!\n", msg->len);
537 struct rpc_call_header *header = (struct rpc_call_header *)(msg->str);
538 uint32_t xid = ntohl(header->xid);
540 if (ntohl(header->mtype) != 0) {
541 /* Not an RPC call */
545 if (ntohl(header->rpcvers) != 2) {
549 RPCRequest *req = g_new0(RPCRequest, 1);
550 req->connection = rpc;
551 req->time_start = time_start;
554 if (ntohl(header->prog) != NFS_PROGRAM) {
555 async_rpc_send_failure(req, PROG_UNAVAIL);
557 } else if (ntohl(header->vers) != NFS_V3) {
558 /* FIXME: Should be PROG_MISMATCH */
559 async_rpc_send_failure(req, PROG_UNAVAIL);
563 uint32_t proc = ntohl(header->proc);
565 /* Next, skip over authentication headers. */
566 buf += sizeof(struct rpc_call_header);
567 for (i = 0; i < 2; i++) {
568 struct rpc_auth *auth = (struct rpc_auth *)buf;
569 if (buf - msg->str + sizeof(struct rpc_auth) > msg->len)
572 gsize authsize = ntohl(auth->len) + sizeof(struct rpc_auth);
573 if (authsize > MAX_RPC_MSGSIZE)
579 if (buf - msg->str > msg->len)
583 req->raw_args_header_bytes = buf - msg->str;
584 req->req_proc = ntohl(header->proc);
585 rpc->msgbuf = g_string_new("");
587 if (bluesky_options.sync_frontends) {
590 g_thread_pool_push(rpc_thread_pool, req, NULL);
596 /* Write the given data to the RPC socket. */
597 static void async_rpc_write(RPCConnection *rpc,
598 const char *buf, gsize len)
602 switch (g_io_channel_write_chars(rpc->channel, buf, len,
604 case G_IO_STATUS_ERROR:
605 case G_IO_STATUS_EOF:
606 case G_IO_STATUS_AGAIN:
607 fprintf(stderr, "Error writing to socket!\n");
609 case G_IO_STATUS_NORMAL:
616 // g_io_channel_flush(rpc->channel, NULL);
619 static gboolean async_rpc_do_read(GIOChannel *channel,
620 GIOCondition condition,
623 RPCConnection *rpc = (RPCConnection *)data;
625 gsize bytes_to_read = 0; /* Number of bytes to attempt to read. */
627 /* If we have not yet read in the fragment header, do that first. This is
628 * 4 bytes that indicates the number of bytes in the message to follow
629 * (with the high bit set if this is the last fragment making up the
631 if (rpc->frag_len == 0) {
632 bytes_to_read = 4 - rpc->frag_hdr_bytes;
634 bytes_to_read = rpc->frag_len & 0x7fffffff;
637 if (bytes_to_read > MAX_RPC_MSGSIZE
638 || rpc->msgbuf->len + bytes_to_read > MAX_RPC_MSGSIZE)
640 fprintf(stderr, "Excessive fragment size for RPC: %zd bytes\n",
642 g_io_channel_shutdown(rpc->channel, TRUE, NULL);
646 gsize bytes_read = 0;
647 g_string_set_size(rpc->msgbuf, rpc->msgbuf->len + bytes_to_read);
648 char *buf = &rpc->msgbuf->str[rpc->msgbuf->len - bytes_to_read];
649 switch (g_io_channel_read_chars(rpc->channel, buf,
650 bytes_to_read, &bytes_read, NULL)) {
651 case G_IO_STATUS_NORMAL:
653 case G_IO_STATUS_AGAIN:
655 case G_IO_STATUS_EOF:
656 if (bytes_read == bytes_to_read)
658 /* else fall through */
659 case G_IO_STATUS_ERROR:
660 fprintf(stderr, "Unexpected error or end of file on RPC stream %d!\n",
661 g_io_channel_unix_get_fd(rpc->channel));
662 g_io_channel_shutdown(rpc->channel, TRUE, NULL);
663 /* TODO: Clean up connection object. */
667 g_assert(bytes_read >= 0 && bytes_read <= bytes_to_read);
669 g_string_set_size(rpc->msgbuf,
670 rpc->msgbuf->len - (bytes_to_read - bytes_read));
672 if (rpc->frag_len == 0) {
673 /* Handle reading in the fragment header. If we've read the complete
674 * header, store the fragment size. */
675 rpc->frag_hdr_bytes += bytes_read;
676 if (rpc->frag_hdr_bytes == 4) {
677 memcpy((char *)&rpc->frag_len,
678 &rpc->msgbuf->str[rpc->msgbuf->len - 4], 4);
679 rpc->frag_len = ntohl(rpc->frag_len);
680 g_string_set_size(rpc->msgbuf, rpc->msgbuf->len - 4);
681 rpc->frag_hdr_bytes = 0;
684 /* We were reading in the fragment body. */
685 rpc->frag_len -= bytes_read;
687 if (rpc->frag_len = 0x80000000) {
688 /* We have a complete message since this was the last fragment and
689 * there are no more bytes in it. Dispatch the message. */
690 if (!async_rpc_dispatch(rpc)) {
691 fprintf(stderr, "Invalid RPC message, closing channel\n");
692 g_io_channel_shutdown(rpc->channel, TRUE, NULL);
696 g_string_set_size(rpc->msgbuf, 0);
703 static gboolean async_rpc_do_accept(GIOChannel *channel,
704 GIOCondition condition,
707 int fd = g_io_channel_unix_get_fd(channel);
708 struct sockaddr_in addr;
709 socklen_t addrlen = sizeof(addr);
711 g_print("Received new connection on fd %d!\n", fd);
712 int nfd = accept(fd, (struct sockaddr *)&addr, &addrlen);
714 fprintf(stderr, "Error accepting connection: %m\n");
718 RPCConnection *rpc = g_new0(RPCConnection, 1);
719 rpc->channel = g_io_channel_unix_new(nfd);
720 rpc->msgbuf = g_string_new("");
721 g_io_channel_set_encoding(rpc->channel, NULL, NULL);
722 rpc->send_lock = g_mutex_new();
723 GSource *source = g_io_create_watch(rpc->channel, G_IO_IN);
724 g_source_set_callback(source, (GSourceFunc)async_rpc_do_read,
726 g_source_attach(source, main_context);
727 g_source_unref(source);
732 static async_rpc_register_listening(int fd)
734 GIOChannel *channel = g_io_channel_unix_new(fd);
735 g_io_channel_set_encoding(channel, NULL, NULL);
736 GSource *source = g_io_create_watch(channel, G_IO_IN);
737 g_source_set_callback(source, (GSourceFunc)async_rpc_do_accept,
739 g_source_attach(source, main_context);
740 g_source_unref(source);
743 static gpointer async_rpc_run(gpointer data)
745 g_print("Starting NFS main loop...\n");
746 g_main_loop_run(main_loop);
756 pmap_unset (MOUNT_PROGRAM, MOUNT_V3);
758 transp = svcudp_create(RPC_ANYSOCK);
759 if (transp == NULL) {
760 fprintf(stderr, "%s", "cannot create udp service.");
763 if (!svc_register(transp, MOUNT_PROGRAM, MOUNT_V3, mount_program_3, IPPROTO_UDP)) {
764 fprintf(stderr, "%s", "unable to register (MOUNT_PROGRAM, MOUNT_V3, udp).");
768 transp = svctcp_create(RPC_ANYSOCK, 0, 0);
769 if (transp == NULL) {
770 fprintf(stderr, "%s", "cannot create tcp service.");
773 if (!svc_register(transp, MOUNT_PROGRAM, MOUNT_V3, mount_program_3, IPPROTO_TCP)) {
774 fprintf(stderr, "%s", "unable to register (MOUNT_PROGRAM, MOUNT_V3, tcp).");
778 /* NFS protocol (version 3) */
779 pmap_unset (NFS_PROGRAM, NFS_V3);
781 int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
783 fprintf(stderr, "Unable to create NFS TCP socket: %m\n");
788 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&n, sizeof(n));
790 struct sockaddr_in addr;
791 addr.sin_family = AF_INET;
792 addr.sin_port = htons(NFS_SERVICE_PORT);
793 addr.sin_addr.s_addr = INADDR_ANY;
794 if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
795 fprintf(stderr, "Unable to bind to NFS TCP address: %m\n");
799 if (listen(fd, SOMAXCONN) < 0) {
800 fprintf(stderr, "Unable to listen on NFS TCP socket: %m\n");
804 if (!pmap_set(NFS_PROGRAM, NFS_V3, IPPROTO_TCP, NFS_SERVICE_PORT)) {
805 fprintf(stderr, "Could not register NFS RPC service!\n");
809 async_rpc_register_listening(fd);
811 g_thread_create(async_rpc_run, NULL, TRUE, NULL);