3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * $FreeBSD: src/usr.sbin/yppush/yppush_main.c,v 1.11.2.2 2002/02/15 00:46:59 des Exp $
33 * $DragonFly: src/usr.sbin/yppush/yppush_main.c,v 1.3 2005/11/24 22:23:02 swildner Exp $
43 #include <sys/socket.h>
44 #include <sys/fcntl.h>
46 #include <sys/param.h>
49 #include <rpc/pmap_clnt.h>
50 #include <rpcsvc/yp.h>
51 struct dom_binding {};
52 #include <rpcsvc/ypclnt.h>
53 #include "ypxfr_extern.h"
54 #include "yppush_extern.h"
56 char *progname = "yppush";
59 char *yp_dir = _PATH_YP;
61 char *yppush_mapname = NULL; /* Map to transfer. */
62 char *yppush_domain = NULL; /* Domain in which map resides. */
63 char *yppush_master = NULL; /* Master NIS server for said domain. */
64 int verbose = 0; /* Toggle verbose mode. */
65 unsigned long yppush_transid = 0;
66 int yppush_timeout = 80; /* Default timeout. */
67 int yppush_jobs = 0; /* Number of allowed concurrent jobs. */
68 int yppush_running_jobs = 0; /* Number of currently running jobs. */
69 int yppush_alarm_tripped = 0;
71 /* Structure for holding information about a running job. */
77 unsigned long prognum;
84 struct jobs *yppush_joblist; /* Linked list of running jobs. */
87 * Local error messages.
90 yppusherr_string(int err)
93 case YPPUSH_TIMEDOUT: return("transfer or callback timed out");
94 case YPPUSH_YPSERV: return("failed to contact ypserv");
95 case YPPUSH_NOHOST: return("no such host");
96 case YPPUSH_PMAP: return("portmapper failure");
97 default: return("unknown error code");
102 * Report state of a job.
105 yppush_show_status(ypxfrstat status, unsigned long tid)
109 job = yppush_joblist;
122 yp_error("checking return status: transaction ID: %lu",
124 if (status != YPPUSH_SUCC || verbose) {
125 yp_error("transfer of map %s to server %s %s",
126 job->map, job->server, status == YPPUSH_SUCC ?
127 "succeeded" : "failed");
128 yp_error("status returned by ypxfr: %s", status > YPPUSH_AGE ?
129 yppusherr_string(status) :
130 ypxfrerr_string(status));
135 svc_unregister(job->prognum, 1);
137 yppush_running_jobs--;
146 int still_pending = 1;
148 /* Let all the information trickle in. */
149 while (!now && still_pending) {
150 jptr = yppush_joblist;
153 if (jptr->polled == 0) {
156 yp_error("%s has not responded",
160 yp_error("%s has responded",
167 yp_error("%d transfer%sstill pending",
169 still_pending > 1 ? "s " : " ");
170 yppush_alarm_tripped = 0;
171 alarm(YPPUSH_RESPONSE_TIMEOUT);
174 if (yppush_alarm_tripped == 1) {
175 yp_error("timed out");
180 yp_error("all transfers complete");
186 /* All stats collected and reported -- kill all the stragglers. */
187 jptr = yppush_joblist;
190 yp_error("warning: exiting with transfer \
191 to %s (transid = %lu) still pending", jptr->server, jptr->tid);
192 svc_unregister(jptr->prognum, 1);
200 * Handler for 'normal' signals.
206 if (sig == SIGTERM || sig == SIGINT || sig == SIGABRT) {
211 if (sig == SIGALRM) {
213 yppush_alarm_tripped++;
220 * Dispatch loop for callback RPC services.
229 #endif /* def FD_SETSIZE */
230 struct timeval timeout;
240 #endif /* def FD_SETSIZE */
241 switch (select(_rpc_dtablesize(), &readfds, NULL, NULL, &timeout)) {
245 yp_error("select failed: %s", strerror(errno));
248 yp_error("select() timed out");
251 svc_getreqset(&readfds);
258 * Special handler for asynchronous socket I/O. We mark the
259 * sockets of the callback handlers as O_ASYNC and handle SIGIO
260 * events here, which will occur when the callback handler has
261 * something interesting to tell us.
264 async_handler(int sig)
268 /* reset any pending alarms. */
270 yppush_alarm_tripped++;
271 kill(getpid(), SIGALRM);
276 * RPC service routines for callbacks.
279 yppushproc_null_1_svc(void *argp, struct svc_req *rqstp)
281 static char * result;
282 /* Do nothing -- RPC conventions call for all a null proc. */
283 return((void *) &result);
287 yppushproc_xfrresp_1_svc(yppushresp_xfr *argp, struct svc_req *rqstp)
289 static char * result;
290 yppush_show_status(argp->status, argp->transid);
291 return((void *) &result);
295 * Transmit a YPPROC_XFR request to ypserv.
298 yppush_send_xfr(struct jobs *job)
301 /* ypresp_xfr *resp; */
305 struct timeval timeout;
311 * The ypreq_xfr structure has a member of type map_parms,
312 * which seems to require the order number of the map.
313 * It isn't actually used at the other end (at least the
314 * FreeBSD ypserv doesn't use it) but we fill it in here
315 * for the sake of completeness.
317 key.data = "YP_LAST_MODIFIED";
318 key.size = sizeof ("YP_LAST_MODIFIED") - 1;
320 if (yp_get_record(yppush_domain, yppush_mapname, &key, &data,
322 yp_error("failed to read order number from %s: %s: %s",
323 yppush_mapname, yperr_string(yp_errno),
328 /* Fill in the request arguments */
329 req.map_parms.ordernum = atoi(data.data);
330 req.map_parms.domain = yppush_domain;
331 req.map_parms.peer = yppush_master;
332 req.map_parms.map = job->map;
333 req.transid = job->tid;
334 req.prog = job->prognum;
335 req.port = job->port;
337 /* Get a handle to the remote ypserv. */
338 if ((clnt = clnt_create(job->server, YPPROG, YPVERS, "udp")) == NULL) {
339 yp_error("%s: %s",job->server,clnt_spcreateerror("couldn't \
340 create udp handle to NIS server"));
341 switch (rpc_createerr.cf_stat) {
342 case RPC_UNKNOWNHOST:
343 job->stat = YPPUSH_NOHOST;
345 case RPC_PMAPFAILURE:
346 job->stat = YPPUSH_PMAP;
349 job->stat = YPPUSH_RPC;
356 * Reduce timeout to nothing since we may not
357 * get a response from ypserv and we don't want to block.
359 if (clnt_control(clnt, CLSET_TIMEOUT, (char *)&timeout) == FALSE)
360 yp_error("failed to set timeout on ypproc_xfr call");
362 /* Invoke the ypproc_xfr service. */
363 if (ypproc_xfr_2(&req, clnt) == NULL) {
364 clnt_geterr(clnt, &err);
365 if (err.re_status != RPC_SUCCESS &&
366 err.re_status != RPC_TIMEDOUT) {
367 yp_error("%s: %s", job->server, clnt_sperror(clnt,
369 job->stat = YPPUSH_YPSERV;
381 * Main driver function. Register the callback service, add the transfer
382 * request to the internal list, send the YPPROC_XFR request to ypserv
383 * do other magic things.
386 yp_push(char *server, char *map, unsigned long tid)
388 unsigned long prognum;
389 int sock = RPC_ANYSOCK;
394 * Register the callback service on the first free
395 * transient program number.
397 xprt = svcudp_create(sock);
398 for (prognum = 0x40000000; prognum < 0x5FFFFFFF; prognum++) {
399 if (svc_register(xprt, prognum, 1,
400 yppush_xfrrespprog_1, IPPROTO_UDP) == TRUE)
404 /* Register the job in our linked list of jobs. */
405 if ((job = (struct jobs *)malloc(sizeof (struct jobs))) == NULL) {
406 yp_error("malloc failed");
410 /* Initialize the info for this job. */
413 job->port = xprt->xp_port;
414 job->sock = xprt->xp_sock; /*XXX: Evil!! EEEEEEEVIL!!! */
415 job->server = strdup(server);
416 job->map = strdup(map);
417 job->prognum = prognum;
419 job->next = yppush_joblist;
420 yppush_joblist = job;
423 * Set the RPC sockets to asynchronous mode. This will
424 * cause the system to smack us with a SIGIO when an RPC
425 * callback is delivered. This in turn allows us to handle
426 * the callback even though we may be in the middle of doing
427 * something else at the time.
429 * XXX This is a horrible thing to do for two reasons,
430 * both of which have to do with portability:
431 * 1) We really ought not to be sticking our grubby mits
432 * into the RPC service transport handle like this.
433 * 2) Even in this day and age, there are still some *NIXes
434 * that don't support async socket I/O.
436 if (fcntl(xprt->xp_sock, F_SETOWN, getpid()) == -1 ||
437 fcntl(xprt->xp_sock, F_SETFL, O_ASYNC) == -1) {
438 yp_error("failed to set async I/O mode: %s",
444 yp_error("initiating transfer: %s -> %s (transid = %lu)",
445 yppush_mapname, server, tid);
449 * Send the XFR request to ypserv. We don't have to wait for
450 * a response here since we can handle them asynchronously.
453 if (yppush_send_xfr(job)){
454 /* Transfer request blew up. */
455 yppush_show_status(job->stat ? job->stat :
456 YPPUSH_YPSERV,job->tid);
459 yp_error("%s has been called", server);
466 * Called for each entry in the ypservers map from yp_get_map(), which
467 * is our private yp_all() routine.
470 yppush_foreach(int status, char *key, int keylen, char *val, int vallen,
473 char server[YPMAXRECORD + 2];
475 if (status != YP_TRUE)
478 snprintf(server, sizeof(server), "%.*s", vallen, val);
481 * Restrict the number of concurrent jobs. If yppush_jobs number
482 * of jobs have already been dispatched and are still pending,
483 * wait for one of them to finish so we can reuse its slot.
485 if (yppush_jobs <= 1) {
486 yppush_alarm_tripped = 0;
487 while (!yppush_alarm_tripped && yppush_running_jobs) {
488 alarm(yppush_timeout);
489 yppush_alarm_tripped = 0;
494 yppush_alarm_tripped = 0;
495 while (!yppush_alarm_tripped && yppush_running_jobs >= yppush_jobs) {
496 alarm(yppush_timeout);
497 yppush_alarm_tripped = 0;
503 /* Cleared for takeoff: set everything in motion. */
504 if (yp_push(&server, yppush_mapname, yppush_transid))
507 /* Bump the job counter and transaction ID. */
508 yppush_running_jobs++;
516 fprintf (stderr, "%s\n%s\n",
517 "usage: yppush [-d domain] [-t timeout] [-j #parallel jobs] [-h host]",
518 " [-p path] mapname");
523 * Entry point. (About time!)
526 main(int argc, char *argv[])
530 char myname[MAXHOSTNAMELEN];
533 struct hostlist *next;
535 struct hostlist *yppush_hostlist = NULL;
536 struct hostlist *tmp;
539 while ((ch = getopt(argc, argv, "d:j:p:h:t:v")) != -1) {
542 yppush_domain = optarg;
545 yppush_jobs = atoi(optarg);
546 if (yppush_jobs <= 0)
552 case 'h': /* we can handle multiple hosts */
553 if ((tmp = (struct hostlist *)malloc(sizeof(struct hostlist))) == NULL) {
554 yp_error("malloc failed");
557 tmp->name = strdup(optarg);
558 tmp->next = yppush_hostlist;
559 yppush_hostlist = tmp;
562 yppush_timeout = atoi(optarg);
576 yppush_mapname = argv[0];
578 if (yppush_mapname == NULL) {
579 /* "No guts, no glory." */
584 * If no domain was specified, try to find the default
585 * domain. If we can't find that, we're doomed and must bail.
587 if (yppush_domain == NULL) {
588 char *yppush_check_domain;
589 if (!yp_get_default_domain(&yppush_check_domain) &&
590 !_yp_check(&yppush_check_domain)) {
591 yp_error("no domain specified and NIS not running");
594 yp_get_default_domain(&yppush_domain);
597 /* Check to see that we are the master for this map. */
599 if (gethostname ((char *)&myname, sizeof(myname))) {
600 yp_error("failed to get name of local host: %s",
605 key.data = "YP_MASTER_NAME";
606 key.size = sizeof("YP_MASTER_NAME") - 1;
608 if (yp_get_record(yppush_domain, yppush_mapname,
609 &key, &data, 1) != YP_TRUE) {
610 yp_error("couldn't open %s map: %s", yppush_mapname,
615 if (strncmp(myname, data.data, data.size)) {
616 yp_error("warning: this host is not the master for %s",
623 yppush_master = malloc(data.size + 1);
624 strncpy(yppush_master, data.data, data.size);
625 yppush_master[data.size] = '\0';
627 /* Install some handy handlers. */
628 signal(SIGALRM, handler);
629 signal(SIGTERM, handler);
630 signal(SIGINT, handler);
631 signal(SIGABRT, handler);
634 * Set up the SIGIO handler. Make sure that some of the
635 * other signals are blocked while the handler is running so
636 * select() doesn't get interrupted.
638 sigemptyset(&sa.sa_mask);
639 sigaddset(&sa.sa_mask, SIGIO); /* Goes without saying. */
640 sigaddset(&sa.sa_mask, SIGPIPE);
641 sigaddset(&sa.sa_mask, SIGCHLD);
642 sigaddset(&sa.sa_mask, SIGALRM);
643 sigaddset(&sa.sa_mask, SIGINT);
644 sa.sa_handler = async_handler;
647 sigaction(SIGIO, &sa, NULL);
649 /* set initial transaction ID */
650 yppush_transid = time((time_t *)NULL);
652 if (yppush_hostlist) {
654 * Host list was specified on the command line:
655 * kick off the transfers by hand.
657 tmp = yppush_hostlist;
659 yppush_foreach(YP_TRUE, NULL, 0, tmp->name,
660 strlen(tmp->name), NULL);
665 * Do a yp_all() on the ypservers map and initiate a ypxfr
668 ypxfr_get_map("ypservers", yppush_domain,
669 "localhost", yppush_foreach);
673 yp_error("all jobs dispatched");
675 /* All done -- normal exit. */