1 /*- 2 * Copyright (c) 2002-2010 M. Warner Losh. 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 * $FreeBSD: src/sbin/devd/devd.cc,v 1.33 2006/09/17 22:49:26 ru Exp $ 27 * $DragonFly: src/sbin/devd/devd.cc,v 1.1 2008/10/03 00:26:21 hasso Exp $ 28 */ 29 30 /* 31 * DEVD control daemon. 32 */ 33 34 // TODO list: 35 // o devd.conf and devd man pages need a lot of help: 36 // - devd needs to document the unix domain socket 37 // - devd.conf needs more details on the supported statements. 38 39 #include <sys/param.h> 40 #include <sys/socket.h> 41 #include <sys/stat.h> 42 #include <sys/sysctl.h> 43 #include <sys/types.h> 44 #include <sys/un.h> 45 46 #include <cctype> 47 #include <cerrno> 48 #include <csignal> 49 #include <cstdlib> 50 #include <cstdio> 51 #include <cstring> 52 53 #include <dirent.h> 54 #include <err.h> 55 #include <fcntl.h> 56 #include <libutil.h> 57 #include <regex.h> 58 #include <unistd.h> 59 60 #include <algorithm> 61 #include <map> 62 #include <string> 63 #include <list> 64 #include <vector> 65 66 #include "devd.h" /* C compatible definitions */ 67 #include "devd.hh" /* C++ class definitions */ 68 69 #define PIPE "/var/run/devd.pipe" 70 #define CF "/etc/devd.conf" 71 #define SYSCTL "hw.bus.devctl_disable" 72 73 using namespace std; 74 75 extern FILE *yyin; 76 extern int lineno; 77 78 static const char notify = '!'; 79 static const char nomatch = '?'; 80 static const char attach = '+'; 81 static const char detach = '-'; 82 83 int Dflag; 84 int dflag; 85 int nflag; 86 static volatile sig_atomic_t romeo_must_die = 0; 87 88 static const char *configfile = CF; 89 90 static void event_loop(void); 91 static void usage(void); 92 93 template <class T> void 94 delete_and_clear(vector<T *> &v) 95 { 96 typename vector<T *>::const_iterator i; 97 98 for (i = v.begin(); i != v.end(); ++i) 99 delete *i; 100 v.clear(); 101 } 102 103 config cfg; 104 105 event_proc::event_proc() : _prio(-1) 106 { 107 // nothing 108 } 109 110 event_proc::~event_proc() 111 { 112 delete_and_clear(_epsvec); 113 } 114 115 void 116 event_proc::add(eps *eps) 117 { 118 _epsvec.push_back(eps); 119 } 120 121 bool 122 event_proc::matches(config &c) const 123 { 124 vector<eps *>::const_iterator i; 125 126 for (i = _epsvec.begin(); i != _epsvec.end(); ++i) 127 if (!(*i)->do_match(c)) 128 return (false); 129 return (true); 130 } 131 132 bool 133 event_proc::run(config &c) const 134 { 135 vector<eps *>::const_iterator i; 136 137 for (i = _epsvec.begin(); i != _epsvec.end(); ++i) 138 if (!(*i)->do_action(c)) 139 return (false); 140 return (true); 141 } 142 143 action::action(const char *cmd) 144 : _cmd(cmd) 145 { 146 // nothing 147 } 148 149 action::~action() 150 { 151 // nothing 152 } 153 154 bool 155 action::do_action(config &c) 156 { 157 string s = c.expand_string(_cmd); 158 if (Dflag) 159 fprintf(stderr, "Executing '%s'\n", s.c_str()); 160 ::system(s.c_str()); 161 return (true); 162 } 163 164 match::match(config &c, const char *var, const char *re) 165 : _var(var), _re("^") 166 { 167 _re.append(c.expand_string(string(re))); 168 _re.append("$"); 169 regcomp(&_regex, _re.c_str(), REG_EXTENDED | REG_NOSUB | REG_ICASE); 170 } 171 172 match::~match() 173 { 174 regfree(&_regex); 175 } 176 177 bool 178 match::do_match(config &c) 179 { 180 const string &value = c.get_variable(_var); 181 bool retval; 182 183 if (Dflag) 184 fprintf(stderr, "Testing %s=%s against %s\n", _var.c_str(), 185 value.c_str(), _re.c_str()); 186 187 retval = (regexec(&_regex, value.c_str(), 0, NULL, 0) == 0); 188 return retval; 189 } 190 191 #include <sys/sockio.h> 192 #include <net/if.h> 193 #include <net/if_media.h> 194 195 media::media(config &, const char *var, const char *type) 196 : _var(var), _type(-1) 197 { 198 static struct ifmedia_description media_types[] = { 199 { IFM_ETHER, "Ethernet" }, 200 { IFM_IEEE80211, "802.11" }, 201 { IFM_ATM, "ATM" }, 202 { IFM_CARP, "CARP" }, 203 { -1, "unknown" }, 204 { 0, NULL }, 205 }; 206 for (int i = 0; media_types[i].ifmt_string != NULL; ++i) 207 if (strcasecmp(type, media_types[i].ifmt_string) == 0) { 208 _type = media_types[i].ifmt_word; 209 break; 210 } 211 } 212 213 media::~media() 214 { 215 } 216 217 bool 218 media::do_match(config &c) 219 { 220 string value; 221 struct ifmediareq ifmr; 222 bool retval; 223 int s; 224 225 // Since we can be called from both a device attach/detach 226 // context where device-name is defined and what we want, 227 // as well as from a link status context, where subsystem is 228 // the name of interest, first try device-name and fall back 229 // to subsystem if none exists. 230 value = c.get_variable("device-name"); 231 if (value.empty()) 232 value = c.get_variable("subsystem"); 233 if (Dflag) 234 fprintf(stderr, "Testing media type of %s against 0x%x\n", 235 value.c_str(), _type); 236 237 retval = false; 238 239 s = socket(PF_INET, SOCK_DGRAM, 0); 240 if (s >= 0) { 241 memset(&ifmr, 0, sizeof(ifmr)); 242 strncpy(ifmr.ifm_name, value.c_str(), sizeof(ifmr.ifm_name)); 243 244 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) >= 0 && 245 ifmr.ifm_status & IFM_AVALID) { 246 if (Dflag) 247 fprintf(stderr, "%s has media type 0x%x\n", 248 value.c_str(), IFM_TYPE(ifmr.ifm_active)); 249 retval = (IFM_TYPE(ifmr.ifm_active) == _type); 250 } else if (_type == -1) { 251 if (Dflag) 252 fprintf(stderr, "%s has unknown media type\n", 253 value.c_str()); 254 retval = true; 255 } 256 close(s); 257 } 258 259 return retval; 260 } 261 262 const string var_list::bogus = "_$_$_$_$_B_O_G_U_S_$_$_$_$_"; 263 const string var_list::nothing = ""; 264 265 const string & 266 var_list::get_variable(const string &var) const 267 { 268 map<string, string>::const_iterator i; 269 270 i = _vars.find(var); 271 if (i == _vars.end()) 272 return (var_list::bogus); 273 return (i->second); 274 } 275 276 bool 277 var_list::is_set(const string &var) const 278 { 279 return (_vars.find(var) != _vars.end()); 280 } 281 282 void 283 var_list::set_variable(const string &var, const string &val) 284 { 285 if (Dflag) 286 fprintf(stderr, "setting %s=%s\n", var.c_str(), val.c_str()); 287 _vars[var] = val; 288 } 289 290 void 291 config::reset(void) 292 { 293 _dir_list.clear(); 294 delete_and_clear(_var_list_table); 295 delete_and_clear(_attach_list); 296 delete_and_clear(_detach_list); 297 delete_and_clear(_nomatch_list); 298 delete_and_clear(_notify_list); 299 } 300 301 void 302 config::parse_one_file(const char *fn) 303 { 304 if (Dflag) 305 fprintf(stderr, "Parsing %s\n", fn); 306 yyin = fopen(fn, "r"); 307 if (yyin == NULL) 308 err(1, "Cannot open config file %s", fn); 309 lineno = 1; 310 if (yyparse() != 0) 311 errx(1, "Cannot parse %s at line %d", fn, lineno); 312 fclose(yyin); 313 } 314 315 void 316 config::parse_files_in_dir(const char *dirname) 317 { 318 DIR *dirp; 319 struct dirent *dp; 320 char path[PATH_MAX]; 321 322 if (Dflag) 323 fprintf(stderr, "Parsing files in %s\n", dirname); 324 dirp = opendir(dirname); 325 if (dirp == NULL) 326 return; 327 readdir(dirp); /* Skip . */ 328 readdir(dirp); /* Skip .. */ 329 while ((dp = readdir(dirp)) != NULL) { 330 if (strcmp(dp->d_name + dp->d_namlen - 5, ".conf") == 0) { 331 snprintf(path, sizeof(path), "%s/%s", 332 dirname, dp->d_name); 333 parse_one_file(path); 334 } 335 } 336 } 337 338 class epv_greater { 339 public: 340 int operator()(event_proc *const&l1, event_proc *const&l2) const 341 { 342 return (l1->get_priority() > l2->get_priority()); 343 } 344 }; 345 346 void 347 config::sort_vector(vector<event_proc *> &v) 348 { 349 sort(v.begin(), v.end(), epv_greater()); 350 } 351 352 void 353 config::parse(void) 354 { 355 vector<string>::const_iterator i; 356 357 parse_one_file(configfile); 358 for (i = _dir_list.begin(); i != _dir_list.end(); ++i) 359 parse_files_in_dir((*i).c_str()); 360 sort_vector(_attach_list); 361 sort_vector(_detach_list); 362 sort_vector(_nomatch_list); 363 sort_vector(_notify_list); 364 } 365 366 void 367 config::open_pidfile() 368 { 369 if (pidfile(NULL)) 370 errx(1, "devd already running"); 371 } 372 373 void 374 config::add_attach(int prio, event_proc *p) 375 { 376 p->set_priority(prio); 377 _attach_list.push_back(p); 378 } 379 380 void 381 config::add_detach(int prio, event_proc *p) 382 { 383 p->set_priority(prio); 384 _detach_list.push_back(p); 385 } 386 387 void 388 config::add_directory(const char *dir) 389 { 390 _dir_list.push_back(string(dir)); 391 } 392 393 void 394 config::add_nomatch(int prio, event_proc *p) 395 { 396 p->set_priority(prio); 397 _nomatch_list.push_back(p); 398 } 399 400 void 401 config::add_notify(int prio, event_proc *p) 402 { 403 p->set_priority(prio); 404 _notify_list.push_back(p); 405 } 406 407 void 408 config::set_pidfile(const char *fn) 409 { 410 _pidfile = fn; 411 } 412 413 void 414 config::push_var_table() 415 { 416 var_list *vl; 417 418 vl = new var_list(); 419 _var_list_table.push_back(vl); 420 if (Dflag) 421 fprintf(stderr, "Pushing table\n"); 422 } 423 424 void 425 config::pop_var_table() 426 { 427 delete _var_list_table.back(); 428 _var_list_table.pop_back(); 429 if (Dflag) 430 fprintf(stderr, "Popping table\n"); 431 } 432 433 void 434 config::set_variable(const char *var, const char *val) 435 { 436 _var_list_table.back()->set_variable(var, val); 437 } 438 439 const string & 440 config::get_variable(const string &var) 441 { 442 vector<var_list *>::reverse_iterator i; 443 444 for (i = _var_list_table.rbegin(); i != _var_list_table.rend(); ++i) { 445 if ((*i)->is_set(var)) 446 return ((*i)->get_variable(var)); 447 } 448 return (var_list::nothing); 449 } 450 451 bool 452 config::is_id_char(char ch) const 453 { 454 return (ch != '\0' && (isalpha(ch) || isdigit(ch) || ch == '_' || 455 ch == '-')); 456 } 457 458 void 459 config::expand_one(const char *&src, string &dst) 460 { 461 int count; 462 string buffer, varstr; 463 464 src++; 465 // $$ -> $ 466 if (*src == '$') { 467 dst += *src++; 468 return; 469 } 470 471 // $(foo) -> $(foo) 472 // Not sure if I want to support this or not, so for now we just pass 473 // it through. 474 if (*src == '(') { 475 dst += '$'; 476 count = 1; 477 /* If the string ends before ) is matched , return. */ 478 while (count > 0 && *src) { 479 if (*src == ')') 480 count--; 481 else if (*src == '(') 482 count++; 483 dst += *src++; 484 } 485 return; 486 } 487 488 // $[^A-Za-z] -> $\1 489 if (!isalpha(*src)) { 490 dst += '$'; 491 dst += *src++; 492 return; 493 } 494 495 // $var -> replace with value 496 do { 497 buffer += *src++; 498 } while (is_id_char(*src)); 499 buffer.append("", 1); 500 varstr = get_variable(buffer.c_str()); 501 dst.append(varstr); 502 } 503 504 const string 505 config::expand_string(const string &s) 506 { 507 const char *src; 508 string dst; 509 510 src = s.c_str(); 511 while (*src) { 512 if (*src == '$') 513 expand_one(src, dst); 514 else 515 dst.append(src++, 1); 516 } 517 dst.append("", 1); 518 519 return (dst); 520 } 521 522 bool 523 config::chop_var(char *&buffer, char *&lhs, char *&rhs) const 524 { 525 char *walker; 526 527 if (*buffer == '\0') 528 return (false); 529 walker = lhs = buffer; 530 while (is_id_char(*walker)) 531 walker++; 532 if (*walker != '=') 533 return (false); 534 walker++; // skip = 535 if (*walker == '"') { 536 walker++; // skip " 537 rhs = walker; 538 while (*walker && *walker != '"') 539 walker++; 540 if (*walker != '"') 541 return (false); 542 rhs[-2] = '\0'; 543 *walker++ = '\0'; 544 } else { 545 rhs = walker; 546 while (*walker && !isspace(*walker)) 547 walker++; 548 if (*walker != '\0') 549 *walker++ = '\0'; 550 rhs[-1] = '\0'; 551 } 552 while (isspace(*walker)) 553 walker++; 554 buffer = walker; 555 return (true); 556 } 557 558 559 char * 560 config::set_vars(char *buffer) 561 { 562 char *lhs; 563 char *rhs; 564 565 while (1) { 566 if (!chop_var(buffer, lhs, rhs)) 567 break; 568 set_variable(lhs, rhs); 569 } 570 return (buffer); 571 } 572 573 void 574 config::find_and_execute(char type) 575 { 576 vector<event_proc *> *l; 577 vector<event_proc *>::const_iterator i; 578 const char *s; 579 580 switch (type) { 581 default: 582 return; 583 case notify: 584 l = &_notify_list; 585 s = "notify"; 586 break; 587 case nomatch: 588 l = &_nomatch_list; 589 s = "nomatch"; 590 break; 591 case attach: 592 l = &_attach_list; 593 s = "attach"; 594 break; 595 case detach: 596 l = &_detach_list; 597 s = "detach"; 598 break; 599 } 600 if (Dflag) 601 fprintf(stderr, "Processing %s event\n", s); 602 for (i = l->begin(); i != l->end(); ++i) { 603 if ((*i)->matches(*this)) { 604 (*i)->run(*this); 605 break; 606 } 607 } 608 609 } 610 611 612 static void 613 process_event(char *buffer) 614 { 615 char type; 616 char *sp; 617 618 sp = buffer + 1; 619 if (Dflag) 620 fprintf(stderr, "Processing event '%s'\n", buffer); 621 type = *buffer++; 622 cfg.push_var_table(); 623 // No match doesn't have a device, and the format is a little 624 // different, so handle it separately. 625 switch (type) { 626 case notify: 627 sp = cfg.set_vars(sp); 628 break; 629 case nomatch: 630 //? at location pnp-info on bus 631 sp = strchr(sp, ' '); 632 if (sp == NULL) 633 return; /* Can't happen? */ 634 *sp++ = '\0'; 635 if (strncmp(sp, "at ", 3) == 0) 636 sp += 3; 637 sp = cfg.set_vars(sp); 638 if (strncmp(sp, "on ", 3) == 0) 639 cfg.set_variable("bus", sp + 3); 640 break; 641 case attach: /*FALLTHROUGH*/ 642 case detach: 643 sp = strchr(sp, ' '); 644 if (sp == NULL) 645 return; /* Can't happen? */ 646 *sp++ = '\0'; 647 cfg.set_variable("device-name", buffer); 648 if (strncmp(sp, "at ", 3) == 0) 649 sp += 3; 650 sp = cfg.set_vars(sp); 651 if (strncmp(sp, "on ", 3) == 0) 652 cfg.set_variable("bus", sp + 3); 653 break; 654 } 655 656 cfg.find_and_execute(type); 657 cfg.pop_var_table(); 658 } 659 660 int 661 create_socket(const char *name) 662 { 663 int fd, slen; 664 struct sockaddr_un sun; 665 666 if ((fd = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) 667 err(1, "socket"); 668 bzero(&sun, sizeof(sun)); 669 sun.sun_family = AF_UNIX; 670 strlcpy(sun.sun_path, name, sizeof(sun.sun_path)); 671 slen = SUN_LEN(&sun); 672 unlink(name); 673 if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) 674 err(1, "fcntl"); 675 if (::bind(fd, (struct sockaddr *) & sun, slen) < 0) 676 err(1, "bind"); 677 listen(fd, 4); 678 chown(name, 0, 0); /* XXX - root.wheel */ 679 chmod(name, 0666); 680 return (fd); 681 } 682 683 list<int> clients; 684 685 void 686 notify_clients(const char *data, int len) 687 { 688 list<int> bad; 689 list<int>::const_iterator i; 690 691 for (i = clients.begin(); i != clients.end(); ++i) { 692 if (write(*i, data, len) <= 0) { 693 bad.push_back(*i); 694 close(*i); 695 } 696 } 697 698 for (i = bad.begin(); i != bad.end(); ++i) 699 clients.erase(find(clients.begin(), clients.end(), *i)); 700 } 701 702 void 703 new_client(int fd) 704 { 705 int s; 706 707 s = accept(fd, NULL, NULL); 708 if (s != -1) 709 clients.push_back(s); 710 } 711 712 static void 713 event_loop(void) 714 { 715 int rv; 716 int fd; 717 char buffer[DEVCTL_MAXBUF]; 718 int once = 0; 719 int server_fd, max_fd; 720 timeval tv; 721 fd_set fds; 722 723 fd = open(PATH_DEVCTL, O_RDONLY); 724 if (fd == -1) 725 err(1, "Can't open devctl device %s", PATH_DEVCTL); 726 if (fcntl(fd, F_SETFD, FD_CLOEXEC) != 0) 727 err(1, "Can't set close-on-exec flag on devctl"); 728 server_fd = create_socket(PIPE); 729 max_fd = max(fd, server_fd) + 1; 730 while (!romeo_must_die) { 731 if (!once && !dflag && !nflag) { 732 // Check to see if we have any events pending. 733 tv.tv_sec = 0; 734 tv.tv_usec = 0; 735 FD_ZERO(&fds); 736 FD_SET(fd, &fds); 737 rv = select(fd + 1, &fds, NULL, NULL, &tv); 738 // No events -> we've processed all pending events 739 if (rv == 0) { 740 if (Dflag) 741 fprintf(stderr, "Calling daemon\n"); 742 daemon(0, 0); 743 cfg.open_pidfile(); 744 once++; 745 } 746 } 747 FD_ZERO(&fds); 748 FD_SET(fd, &fds); 749 FD_SET(server_fd, &fds); 750 rv = select(max_fd, &fds, NULL, NULL, NULL); 751 if (rv == -1) { 752 if (errno == EINTR) 753 continue; 754 err(1, "select"); 755 } 756 if (FD_ISSET(fd, &fds)) { 757 rv = read(fd, buffer, sizeof(buffer) - 1); 758 if (rv > 0) { 759 notify_clients(buffer, rv); 760 buffer[rv] = '\0'; 761 while (buffer[--rv] == '\n') 762 buffer[rv] = '\0'; 763 process_event(buffer); 764 } else if (rv < 0) { 765 if (errno != EINTR) 766 break; 767 } else { 768 /* EOF */ 769 break; 770 } 771 } 772 if (FD_ISSET(server_fd, &fds)) 773 new_client(server_fd); 774 } 775 close(fd); 776 } 777 778 /* 779 * functions that the parser uses. 780 */ 781 void 782 add_attach(int prio, event_proc *p) 783 { 784 cfg.add_attach(prio, p); 785 } 786 787 void 788 add_detach(int prio, event_proc *p) 789 { 790 cfg.add_detach(prio, p); 791 } 792 793 void 794 add_directory(const char *dir) 795 { 796 cfg.add_directory(dir); 797 free(const_cast<char *>(dir)); 798 } 799 800 void 801 add_nomatch(int prio, event_proc *p) 802 { 803 cfg.add_nomatch(prio, p); 804 } 805 806 void 807 add_notify(int prio, event_proc *p) 808 { 809 cfg.add_notify(prio, p); 810 } 811 812 event_proc * 813 add_to_event_proc(event_proc *ep, eps *eps) 814 { 815 if (ep == NULL) 816 ep = new event_proc(); 817 ep->add(eps); 818 return (ep); 819 } 820 821 eps * 822 new_action(const char *cmd) 823 { 824 eps *e = new action(cmd); 825 free(const_cast<char *>(cmd)); 826 return (e); 827 } 828 829 eps * 830 new_match(const char *var, const char *re) 831 { 832 eps *e = new match(cfg, var, re); 833 free(const_cast<char *>(var)); 834 free(const_cast<char *>(re)); 835 return (e); 836 } 837 838 eps * 839 new_media(const char *var, const char *re) 840 { 841 eps *e = new media(cfg, var, re); 842 free(const_cast<char *>(var)); 843 free(const_cast<char *>(re)); 844 return (e); 845 } 846 847 void 848 set_pidfile(const char *name) 849 { 850 cfg.set_pidfile(name); 851 free(const_cast<char *>(name)); 852 } 853 854 void 855 set_variable(const char *var, const char *val) 856 { 857 cfg.set_variable(var, val); 858 free(const_cast<char *>(var)); 859 free(const_cast<char *>(val)); 860 } 861 862 863 864 static void 865 gensighand(int) 866 { 867 romeo_must_die = 1; 868 unlink("/var/run/devd.pid"); /* XXX */ 869 } 870 871 static void 872 usage() 873 { 874 fprintf(stderr, "usage: %s [-Ddn] [-f file]\n", getprogname()); 875 exit(1); 876 } 877 878 static void 879 check_devd_enabled() 880 { 881 int val = 0; 882 size_t len; 883 884 len = sizeof(val); 885 if (sysctlbyname(SYSCTL, &val, &len, NULL, 0) != 0) 886 errx(1, "devctl sysctl missing from kernel!"); 887 if (val) { 888 warnx("Setting " SYSCTL " to 0"); 889 val = 0; 890 sysctlbyname(SYSCTL, NULL, NULL, &val, sizeof(val)); 891 } 892 } 893 894 /* 895 * main 896 */ 897 int 898 main(int argc, char **argv) 899 { 900 int ch; 901 902 check_devd_enabled(); 903 while ((ch = getopt(argc, argv, "Ddf:n")) != -1) { 904 switch (ch) { 905 case 'D': 906 Dflag++; 907 break; 908 case 'd': 909 dflag++; 910 break; 911 case 'f': 912 configfile = optarg; 913 break; 914 case 'n': 915 nflag++; 916 break; 917 default: 918 usage(); 919 } 920 } 921 922 cfg.parse(); 923 if (!dflag && nflag) { 924 if (Dflag) 925 fprintf(stderr, "Calling daemon\n"); 926 daemon(0, 0); 927 cfg.open_pidfile(); 928 } 929 signal(SIGPIPE, SIG_IGN); 930 signal(SIGHUP, gensighand); 931 signal(SIGINT, gensighand); 932 signal(SIGTERM, gensighand); 933 event_loop(); 934 return (0); 935 } 936