1 /*- 2 * Copyright (c) 2009 Rick Macklem, University of Guelph 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/errno.h> 33 #include <sys/linker.h> 34 #include <sys/module.h> 35 #include <sys/mount.h> 36 #include <sys/socket.h> 37 #include <sys/socketvar.h> 38 #include <sys/time.h> 39 #include <sys/ucred.h> 40 #include <sys/vnode.h> 41 #include <sys/wait.h> 42 43 #include <nfs/nfssvc.h> 44 45 #include <rpc/rpc.h> 46 47 #include <fs/nfs/rpcv2.h> 48 #include <fs/nfs/nfsproto.h> 49 #include <fs/nfs/nfskpiport.h> 50 #include <fs/nfs/nfs.h> 51 52 #include <ctype.h> 53 #include <err.h> 54 #include <grp.h> 55 #include <netdb.h> 56 #include <pwd.h> 57 #include <signal.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <syslog.h> 62 #include <unistd.h> 63 64 /* 65 * This program loads the password and group databases into the kernel 66 * for NFS V4. 67 */ 68 69 static void cleanup_term(int); 70 static void usage(void); 71 static void nfsuserdsrv(struct svc_req *, SVCXPRT *); 72 static bool_t xdr_getid(XDR *, caddr_t); 73 static bool_t xdr_getname(XDR *, caddr_t); 74 static bool_t xdr_retval(XDR *, caddr_t); 75 76 #define MAXNAME 1024 77 #define MAXNFSUSERD 20 78 #define DEFNFSUSERD 4 79 #define MAXUSERMAX 100000 80 #define MINUSERMAX 10 81 #define DEFUSERMAX 200 82 #define DEFUSERTIMEOUT (1 * 60) 83 struct info { 84 long id; 85 long retval; 86 char name[MAXNAME + 1]; 87 }; 88 89 u_char *dnsname = "default.domain"; 90 u_char *defaultuser = "nobody"; 91 uid_t defaultuid = (uid_t)32767; 92 u_char *defaultgroup = "nogroup"; 93 gid_t defaultgid = (gid_t)32767; 94 int verbose = 0, im_a_slave = 0, nfsuserdcnt = -1, forcestart = 0; 95 int defusertimeout = DEFUSERTIMEOUT, manage_gids = 0; 96 pid_t slaves[MAXNFSUSERD]; 97 98 int 99 main(int argc, char *argv[]) 100 { 101 int i, j; 102 int error, fnd_dup, len, mustfreeai = 0, start_uidpos; 103 struct nfsd_idargs nid; 104 struct passwd *pwd; 105 struct group *grp; 106 int sock, one = 1; 107 SVCXPRT *udptransp; 108 u_short portnum; 109 sigset_t signew; 110 char hostname[MAXHOSTNAMELEN + 1], *cp; 111 struct addrinfo *aip, hints; 112 static uid_t check_dups[MAXUSERMAX]; 113 gid_t grps[NGROUPS]; 114 int ngroup; 115 116 if (modfind("nfscommon") < 0) { 117 /* Not present in kernel, try loading it */ 118 if (kldload("nfscommon") < 0 || 119 modfind("nfscommon") < 0) 120 errx(1, "Experimental nfs subsystem is not available"); 121 } 122 123 /* 124 * First, figure out what our domain name and Kerberos Realm 125 * seem to be. Command line args may override these later. 126 */ 127 if (gethostname(hostname, MAXHOSTNAMELEN) == 0) { 128 if ((cp = strchr(hostname, '.')) != NULL && 129 *(cp + 1) != '\0') { 130 dnsname = cp + 1; 131 } else { 132 memset((void *)&hints, 0, sizeof (hints)); 133 hints.ai_flags = AI_CANONNAME; 134 error = getaddrinfo(hostname, NULL, &hints, &aip); 135 if (error == 0) { 136 if (aip->ai_canonname != NULL && 137 (cp = strchr(aip->ai_canonname, '.')) != NULL 138 && *(cp + 1) != '\0') { 139 dnsname = cp + 1; 140 mustfreeai = 1; 141 } else { 142 freeaddrinfo(aip); 143 } 144 } 145 } 146 } 147 nid.nid_usermax = DEFUSERMAX; 148 nid.nid_usertimeout = defusertimeout; 149 150 argc--; 151 argv++; 152 while (argc >= 1) { 153 if (!strcmp(*argv, "-domain")) { 154 if (argc == 1) 155 usage(); 156 argc--; 157 argv++; 158 strncpy(hostname, *argv, MAXHOSTNAMELEN); 159 hostname[MAXHOSTNAMELEN] = '\0'; 160 dnsname = hostname; 161 } else if (!strcmp(*argv, "-verbose")) { 162 verbose = 1; 163 } else if (!strcmp(*argv, "-force")) { 164 forcestart = 1; 165 } else if (!strcmp(*argv, "-manage-gids")) { 166 manage_gids = 1; 167 } else if (!strcmp(*argv, "-usermax")) { 168 if (argc == 1) 169 usage(); 170 argc--; 171 argv++; 172 i = atoi(*argv); 173 if (i < MINUSERMAX || i > MAXUSERMAX) { 174 fprintf(stderr, 175 "usermax %d out of range %d<->%d\n", i, 176 MINUSERMAX, MAXUSERMAX); 177 usage(); 178 } 179 nid.nid_usermax = i; 180 } else if (!strcmp(*argv, "-usertimeout")) { 181 if (argc == 1) 182 usage(); 183 argc--; 184 argv++; 185 i = atoi(*argv); 186 if (i < 0 || i > 100000) { 187 fprintf(stderr, 188 "usertimeout %d out of range 0<->100000\n", 189 i); 190 usage(); 191 } 192 nid.nid_usertimeout = defusertimeout = i * 60; 193 } else if (nfsuserdcnt == -1) { 194 nfsuserdcnt = atoi(*argv); 195 if (nfsuserdcnt < 1) 196 usage(); 197 if (nfsuserdcnt > MAXNFSUSERD) { 198 warnx("nfsuserd count %d; reset to %d", 199 nfsuserdcnt, DEFNFSUSERD); 200 nfsuserdcnt = DEFNFSUSERD; 201 } 202 } else { 203 usage(); 204 } 205 argc--; 206 argv++; 207 } 208 if (nfsuserdcnt < 1) 209 nfsuserdcnt = DEFNFSUSERD; 210 211 /* 212 * Strip off leading and trailing '.'s in domain name and map 213 * alphabetics to lower case. 214 */ 215 while (*dnsname == '.') 216 dnsname++; 217 if (*dnsname == '\0') 218 errx(1, "Domain name all '.'"); 219 len = strlen(dnsname); 220 cp = dnsname + len - 1; 221 while (*cp == '.') { 222 *cp = '\0'; 223 len--; 224 cp--; 225 } 226 for (i = 0; i < len; i++) { 227 if (!isascii(dnsname[i])) 228 errx(1, "Domain name has non-ascii char"); 229 if (isupper(dnsname[i])) 230 dnsname[i] = tolower(dnsname[i]); 231 } 232 233 /* 234 * If the nfsuserd died off ungracefully, this is necessary to 235 * get them to start again. 236 */ 237 if (forcestart && nfssvc(NFSSVC_NFSUSERDDELPORT, NULL) < 0) 238 errx(1, "Can't do nfssvc() to delete the port"); 239 240 if (verbose) 241 fprintf(stderr, 242 "nfsuserd: domain=%s usermax=%d usertimeout=%d\n", 243 dnsname, nid.nid_usermax, nid.nid_usertimeout); 244 245 for (i = 0; i < nfsuserdcnt; i++) 246 slaves[i] = (pid_t)-1; 247 248 /* 249 * Set up the service port to accept requests via UDP from 250 * localhost (127.0.0.1). 251 */ 252 if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) 253 err(1, "cannot create udp socket"); 254 255 /* 256 * Not sure what this does, so I'll leave it here for now. 257 */ 258 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); 259 260 if ((udptransp = svcudp_create(sock)) == NULL) 261 err(1, "Can't set up socket"); 262 263 /* 264 * By not specifying a protocol, it is linked into the 265 * dispatch queue, but not registered with portmapper, 266 * which is just what I want. 267 */ 268 if (!svc_register(udptransp, RPCPROG_NFSUSERD, RPCNFSUSERD_VERS, 269 nfsuserdsrv, 0)) 270 err(1, "Can't register nfsuserd"); 271 272 /* 273 * Tell the kernel what my port# is. 274 */ 275 portnum = htons(udptransp->xp_port); 276 #ifdef DEBUG 277 printf("portnum=0x%x\n", portnum); 278 #else 279 if (nfssvc(NFSSVC_NFSUSERDPORT, (caddr_t)&portnum) < 0) { 280 if (errno == EPERM) { 281 fprintf(stderr, 282 "Can't start nfsuserd when already running"); 283 fprintf(stderr, 284 " If not running, use the -force option.\n"); 285 } else { 286 fprintf(stderr, "Can't do nfssvc() to add port\n"); 287 } 288 exit(1); 289 } 290 #endif 291 292 pwd = getpwnam(defaultuser); 293 if (pwd) 294 nid.nid_uid = pwd->pw_uid; 295 else 296 nid.nid_uid = defaultuid; 297 grp = getgrnam(defaultgroup); 298 if (grp) 299 nid.nid_gid = grp->gr_gid; 300 else 301 nid.nid_gid = defaultgid; 302 nid.nid_name = dnsname; 303 nid.nid_namelen = strlen(nid.nid_name); 304 nid.nid_ngroup = 0; 305 nid.nid_grps = NULL; 306 nid.nid_flag = NFSID_INITIALIZE; 307 #ifdef DEBUG 308 printf("Initialize uid=%d gid=%d dns=%s\n", nid.nid_uid, nid.nid_gid, 309 nid.nid_name); 310 #else 311 error = nfssvc(NFSSVC_IDNAME | NFSSVC_NEWSTRUCT, &nid); 312 if (error) 313 errx(1, "Can't initialize nfs user/groups"); 314 #endif 315 316 i = 0; 317 /* 318 * Loop around adding all groups. 319 */ 320 setgrent(); 321 while (i < nid.nid_usermax && (grp = getgrent())) { 322 nid.nid_gid = grp->gr_gid; 323 nid.nid_name = grp->gr_name; 324 nid.nid_namelen = strlen(grp->gr_name); 325 nid.nid_ngroup = 0; 326 nid.nid_grps = NULL; 327 nid.nid_flag = NFSID_ADDGID; 328 #ifdef DEBUG 329 printf("add gid=%d name=%s\n", nid.nid_gid, nid.nid_name); 330 #else 331 error = nfssvc(NFSSVC_IDNAME | NFSSVC_NEWSTRUCT, &nid); 332 if (error) 333 errx(1, "Can't add group %s", grp->gr_name); 334 #endif 335 i++; 336 } 337 338 /* 339 * Loop around adding all users. 340 */ 341 start_uidpos = i; 342 setpwent(); 343 while (i < nid.nid_usermax && (pwd = getpwent())) { 344 fnd_dup = 0; 345 /* 346 * Yes, this is inefficient, but it is only done once when 347 * the daemon is started and will run in a fraction of a second 348 * for nid_usermax at 10000. If nid_usermax is cranked up to 349 * 100000, it will take several seconds, depending on the CPU. 350 */ 351 for (j = 0; j < (i - start_uidpos); j++) 352 if (check_dups[j] == pwd->pw_uid) { 353 /* Found another entry for uid, so skip it */ 354 fnd_dup = 1; 355 break; 356 } 357 if (fnd_dup != 0) 358 continue; 359 check_dups[i - start_uidpos] = pwd->pw_uid; 360 nid.nid_uid = pwd->pw_uid; 361 nid.nid_name = pwd->pw_name; 362 nid.nid_namelen = strlen(pwd->pw_name); 363 if (manage_gids != 0) { 364 /* Get the group list for this user. */ 365 ngroup = NGROUPS; 366 if (getgrouplist(pwd->pw_name, pwd->pw_gid, grps, 367 &ngroup) < 0) 368 syslog(LOG_ERR, "Group list too small"); 369 nid.nid_ngroup = ngroup; 370 nid.nid_grps = grps; 371 } else { 372 nid.nid_ngroup = 0; 373 nid.nid_grps = NULL; 374 } 375 nid.nid_flag = NFSID_ADDUID; 376 #ifdef DEBUG 377 printf("add uid=%d name=%s\n", nid.nid_uid, nid.nid_name); 378 #else 379 error = nfssvc(NFSSVC_IDNAME | NFSSVC_NEWSTRUCT, &nid); 380 if (error) 381 errx(1, "Can't add user %s", pwd->pw_name); 382 #endif 383 i++; 384 } 385 386 /* 387 * I should feel guilty for not calling this for all the above exit() 388 * upon error cases, but I don't. 389 */ 390 if (mustfreeai) 391 freeaddrinfo(aip); 392 393 #ifdef DEBUG 394 exit(0); 395 #endif 396 /* 397 * Temporarily block SIGUSR1 and SIGCHLD, so slaves[] can't 398 * end up bogus. 399 */ 400 sigemptyset(&signew); 401 sigaddset(&signew, SIGUSR1); 402 sigaddset(&signew, SIGCHLD); 403 sigprocmask(SIG_BLOCK, &signew, NULL); 404 405 daemon(0, 0); 406 (void)signal(SIGHUP, SIG_IGN); 407 (void)signal(SIGINT, SIG_IGN); 408 (void)signal(SIGQUIT, SIG_IGN); 409 (void)signal(SIGTERM, SIG_IGN); 410 (void)signal(SIGUSR1, cleanup_term); 411 (void)signal(SIGCHLD, cleanup_term); 412 413 openlog("nfsuserd:", LOG_PID, LOG_DAEMON); 414 415 /* 416 * Fork off the slave daemons that do the work. All the master 417 * does is kill them off and cleanup. 418 */ 419 for (i = 0; i < nfsuserdcnt; i++) { 420 slaves[i] = fork(); 421 if (slaves[i] == 0) { 422 im_a_slave = 1; 423 setproctitle("slave"); 424 sigemptyset(&signew); 425 sigaddset(&signew, SIGUSR1); 426 sigprocmask(SIG_UNBLOCK, &signew, NULL); 427 428 /* 429 * and away we go. 430 */ 431 svc_run(); 432 syslog(LOG_ERR, "nfsuserd died: %m"); 433 exit(1); 434 } else if (slaves[i] < 0) { 435 syslog(LOG_ERR, "fork: %m"); 436 } 437 } 438 439 /* 440 * Just wait for SIGUSR1 or a child to die and then... 441 * As the Governor of California would say, "Terminate them". 442 */ 443 setproctitle("master"); 444 sigemptyset(&signew); 445 while (1) 446 sigsuspend(&signew); 447 } 448 449 /* 450 * The nfsuserd rpc service 451 */ 452 static void 453 nfsuserdsrv(struct svc_req *rqstp, SVCXPRT *transp) 454 { 455 struct passwd *pwd; 456 struct group *grp; 457 int error; 458 u_short sport; 459 struct info info; 460 struct nfsd_idargs nid; 461 u_int32_t saddr; 462 gid_t grps[NGROUPS]; 463 int ngroup; 464 465 /* 466 * Only handle requests from 127.0.0.1 on a reserved port number. 467 * (Since a reserved port # at localhost implies a client with 468 * local root, there won't be a security breach. This is about 469 * the only case I can think of where a reserved port # means 470 * something.) 471 */ 472 sport = ntohs(transp->xp_raddr.sin_port); 473 saddr = ntohl(transp->xp_raddr.sin_addr.s_addr); 474 if ((rqstp->rq_proc != NULLPROC && sport >= IPPORT_RESERVED) || 475 saddr != 0x7f000001) { 476 syslog(LOG_ERR, "req from ip=0x%x port=%d\n", saddr, sport); 477 svcerr_weakauth(transp); 478 return; 479 } 480 switch (rqstp->rq_proc) { 481 case NULLPROC: 482 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL)) 483 syslog(LOG_ERR, "Can't send reply"); 484 return; 485 case RPCNFSUSERD_GETUID: 486 if (!svc_getargs(transp, (xdrproc_t)xdr_getid, 487 (caddr_t)&info)) { 488 svcerr_decode(transp); 489 return; 490 } 491 pwd = getpwuid((uid_t)info.id); 492 info.retval = 0; 493 if (pwd != NULL) { 494 nid.nid_usertimeout = defusertimeout; 495 nid.nid_uid = pwd->pw_uid; 496 nid.nid_name = pwd->pw_name; 497 if (manage_gids != 0) { 498 /* Get the group list for this user. */ 499 ngroup = NGROUPS; 500 if (getgrouplist(pwd->pw_name, pwd->pw_gid, 501 grps, &ngroup) < 0) 502 syslog(LOG_ERR, "Group list too small"); 503 nid.nid_ngroup = ngroup; 504 nid.nid_grps = grps; 505 } else { 506 nid.nid_ngroup = 0; 507 nid.nid_grps = NULL; 508 } 509 } else { 510 nid.nid_usertimeout = 5; 511 nid.nid_uid = (uid_t)info.id; 512 nid.nid_name = defaultuser; 513 nid.nid_ngroup = 0; 514 nid.nid_grps = NULL; 515 } 516 nid.nid_namelen = strlen(nid.nid_name); 517 nid.nid_flag = NFSID_ADDUID; 518 error = nfssvc(NFSSVC_IDNAME | NFSSVC_NEWSTRUCT, &nid); 519 if (error) { 520 info.retval = error; 521 syslog(LOG_ERR, "Can't add user %s\n", pwd->pw_name); 522 } else if (verbose) { 523 syslog(LOG_ERR,"Added uid=%d name=%s\n", 524 nid.nid_uid, nid.nid_name); 525 } 526 if (!svc_sendreply(transp, (xdrproc_t)xdr_retval, 527 (caddr_t)&info)) 528 syslog(LOG_ERR, "Can't send reply"); 529 return; 530 case RPCNFSUSERD_GETGID: 531 if (!svc_getargs(transp, (xdrproc_t)xdr_getid, 532 (caddr_t)&info)) { 533 svcerr_decode(transp); 534 return; 535 } 536 grp = getgrgid((gid_t)info.id); 537 info.retval = 0; 538 if (grp != NULL) { 539 nid.nid_usertimeout = defusertimeout; 540 nid.nid_gid = grp->gr_gid; 541 nid.nid_name = grp->gr_name; 542 } else { 543 nid.nid_usertimeout = 5; 544 nid.nid_gid = (gid_t)info.id; 545 nid.nid_name = defaultgroup; 546 } 547 nid.nid_namelen = strlen(nid.nid_name); 548 nid.nid_ngroup = 0; 549 nid.nid_grps = NULL; 550 nid.nid_flag = NFSID_ADDGID; 551 error = nfssvc(NFSSVC_IDNAME | NFSSVC_NEWSTRUCT, &nid); 552 if (error) { 553 info.retval = error; 554 syslog(LOG_ERR, "Can't add group %s\n", 555 grp->gr_name); 556 } else if (verbose) { 557 syslog(LOG_ERR,"Added gid=%d name=%s\n", 558 nid.nid_gid, nid.nid_name); 559 } 560 if (!svc_sendreply(transp, (xdrproc_t)xdr_retval, 561 (caddr_t)&info)) 562 syslog(LOG_ERR, "Can't send reply"); 563 return; 564 case RPCNFSUSERD_GETUSER: 565 if (!svc_getargs(transp, (xdrproc_t)xdr_getname, 566 (caddr_t)&info)) { 567 svcerr_decode(transp); 568 return; 569 } 570 pwd = getpwnam(info.name); 571 info.retval = 0; 572 if (pwd != NULL) { 573 nid.nid_usertimeout = defusertimeout; 574 nid.nid_uid = pwd->pw_uid; 575 nid.nid_name = pwd->pw_name; 576 } else { 577 nid.nid_usertimeout = 5; 578 nid.nid_uid = defaultuid; 579 nid.nid_name = info.name; 580 } 581 nid.nid_namelen = strlen(nid.nid_name); 582 nid.nid_ngroup = 0; 583 nid.nid_grps = NULL; 584 nid.nid_flag = NFSID_ADDUSERNAME; 585 error = nfssvc(NFSSVC_IDNAME | NFSSVC_NEWSTRUCT, &nid); 586 if (error) { 587 info.retval = error; 588 syslog(LOG_ERR, "Can't add user %s\n", pwd->pw_name); 589 } else if (verbose) { 590 syslog(LOG_ERR,"Added uid=%d name=%s\n", 591 nid.nid_uid, nid.nid_name); 592 } 593 if (!svc_sendreply(transp, (xdrproc_t)xdr_retval, 594 (caddr_t)&info)) 595 syslog(LOG_ERR, "Can't send reply"); 596 return; 597 case RPCNFSUSERD_GETGROUP: 598 if (!svc_getargs(transp, (xdrproc_t)xdr_getname, 599 (caddr_t)&info)) { 600 svcerr_decode(transp); 601 return; 602 } 603 grp = getgrnam(info.name); 604 info.retval = 0; 605 if (grp != NULL) { 606 nid.nid_usertimeout = defusertimeout; 607 nid.nid_gid = grp->gr_gid; 608 nid.nid_name = grp->gr_name; 609 } else { 610 nid.nid_usertimeout = 5; 611 nid.nid_gid = defaultgid; 612 nid.nid_name = info.name; 613 } 614 nid.nid_namelen = strlen(nid.nid_name); 615 nid.nid_ngroup = 0; 616 nid.nid_grps = NULL; 617 nid.nid_flag = NFSID_ADDGROUPNAME; 618 error = nfssvc(NFSSVC_IDNAME | NFSSVC_NEWSTRUCT, &nid); 619 if (error) { 620 info.retval = error; 621 syslog(LOG_ERR, "Can't add group %s\n", 622 grp->gr_name); 623 } else if (verbose) { 624 syslog(LOG_ERR,"Added gid=%d name=%s\n", 625 nid.nid_gid, nid.nid_name); 626 } 627 if (!svc_sendreply(transp, (xdrproc_t)xdr_retval, 628 (caddr_t)&info)) 629 syslog(LOG_ERR, "Can't send reply"); 630 return; 631 default: 632 svcerr_noproc(transp); 633 return; 634 }; 635 } 636 637 /* 638 * Xdr routine to get an id number 639 */ 640 static bool_t 641 xdr_getid(XDR *xdrsp, caddr_t cp) 642 { 643 struct info *ifp = (struct info *)cp; 644 645 return (xdr_long(xdrsp, &ifp->id)); 646 } 647 648 /* 649 * Xdr routine to get a user name 650 */ 651 static bool_t 652 xdr_getname(XDR *xdrsp, caddr_t cp) 653 { 654 struct info *ifp = (struct info *)cp; 655 long len; 656 657 if (!xdr_long(xdrsp, &len)) 658 return (0); 659 if (len > MAXNAME) 660 return (0); 661 if (!xdr_opaque(xdrsp, ifp->name, len)) 662 return (0); 663 ifp->name[len] = '\0'; 664 return (1); 665 } 666 667 /* 668 * Xdr routine to return the value. 669 */ 670 static bool_t 671 xdr_retval(XDR *xdrsp, caddr_t cp) 672 { 673 struct info *ifp = (struct info *)cp; 674 long val; 675 676 val = ifp->retval; 677 return (xdr_long(xdrsp, &val)); 678 } 679 680 /* 681 * cleanup_term() called via SIGUSR1. 682 */ 683 static void 684 cleanup_term(int signo __unused) 685 { 686 int i, cnt; 687 688 if (im_a_slave) 689 exit(0); 690 691 /* 692 * Ok, so I'm the master. 693 * As the Governor of California might say, "Terminate them". 694 */ 695 cnt = 0; 696 for (i = 0; i < nfsuserdcnt; i++) { 697 if (slaves[i] != (pid_t)-1) { 698 cnt++; 699 kill(slaves[i], SIGUSR1); 700 } 701 } 702 703 /* 704 * and wait for them to die 705 */ 706 for (i = 0; i < cnt; i++) 707 wait3(NULL, 0, NULL); 708 709 /* 710 * Finally, get rid of the socket 711 */ 712 if (nfssvc(NFSSVC_NFSUSERDDELPORT, NULL) < 0) { 713 syslog(LOG_ERR, "Can't do nfssvc() to delete the port\n"); 714 exit(1); 715 } 716 exit(0); 717 } 718 719 static void 720 usage(void) 721 { 722 723 errx(1, 724 "usage: nfsuserd [-usermax cache_size] [-usertimeout minutes] [-verbose] [-manage-gids] [-domain domain_name] [n]"); 725 } 726