2 * Copyright (c) 2002-2010 M. Warner Losh.
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.
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
26 * my_system is a variation on lib/libc/stdlib/system.c:
28 * Copyright (c) 1988, 1993
29 * The Regents of the University of California. All rights reserved.
31 * Redistribution and use in source and binary forms, with or without
32 * modification, are permitted provided that the following conditions
34 * 1. Redistributions of source code must retain the above copyright
35 * notice, this list of conditions and the following disclaimer.
36 * 2. Redistributions in binary form must reproduce the above copyright
37 * notice, this list of conditions and the following disclaimer in the
38 * documentation and/or other materials provided with the distribution.
39 * 3. Neither the name of the University nor the names of its contributors
40 * may be used to endorse or promote products derived from this software
41 * without specific prior written permission.
43 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * $FreeBSD: head/sbin/devd/devd.cc 270004 2014-08-14 22:33:56Z asomers $
59 * DEVD control daemon.
63 // o devd.conf and devd man pages need a lot of help:
64 // - devd needs to document the unix domain socket
65 // - devd.conf needs more details on the supported statements.
67 #include <sys/param.h>
68 #include <sys/socket.h>
70 #include <sys/sysctl.h>
71 #include <sys/types.h>
99 #include "devd.h" /* C compatible definitions */
100 #include "devd.hh" /* C++ class definitions */
102 #define STREAMPIPE "/var/run/devd.pipe"
103 #define SEQPACKETPIPE "/var/run/devd.seqpacket.pipe"
104 #define CF "/etc/devd.conf"
105 #define SYSCTL "hw.bus.devctl_disable"
108 * Since the client socket is nonblocking, we must increase its send buffer to
109 * handle brief event storms. On FreeBSD, AF_UNIX sockets don't have a receive
110 * buffer, so the client can't increate the buffersize by itself.
112 * For example, when creating a ZFS pool, devd emits one 165 character
113 * resource.fs.zfs.statechange message for each vdev in the pool. A 64k
114 * buffer has enough space for almost 400 drives, which would be very large but
115 * not impossibly large pool. A 128k buffer has enough space for 794 drives,
116 * which is more than can fit in a rack with modern technology.
118 #define CLIENT_BUFSIZE 131072
122 typedef struct client {
130 static const char notify = '!';
131 static const char nomatch = '?';
132 static const char attach = '+';
133 static const char detach = '-';
135 static struct pidfh *pfh;
137 static int no_daemon = 0;
138 static int daemonize_quick = 0;
139 static int quiet_mode = 0;
140 static unsigned total_events = 0;
141 static volatile sig_atomic_t got_siginfo = 0;
142 static volatile sig_atomic_t romeo_must_die = 0;
144 static const char *configfile = CF;
146 static void devdlog(int priority, const char* message, ...)
148 static void event_loop(void);
149 static void usage(void);
151 template <class T> void
152 delete_and_clear(vector<T *> &v)
154 typename vector<T *>::const_iterator i;
156 for (i = v.begin(); i != v.end(); ++i)
163 event_proc::event_proc() : _prio(-1)
168 event_proc::~event_proc()
170 delete_and_clear(_epsvec);
174 event_proc::add(eps *eps)
176 _epsvec.push_back(eps);
180 event_proc::matches(config &c) const
182 vector<eps *>::const_iterator i;
184 for (i = _epsvec.begin(); i != _epsvec.end(); ++i)
185 if (!(*i)->do_match(c))
191 event_proc::run(config &c) const
193 vector<eps *>::const_iterator i;
195 for (i = _epsvec.begin(); i != _epsvec.end(); ++i)
196 if (!(*i)->do_action(c))
201 action::action(const char *cmd)
213 my_system(const char *command)
217 struct sigaction ign, intact, quitact;
218 sigset_t newsigblock, oldsigblock;
220 if (!command) /* just checking... */
224 * Ignore SIGINT and SIGQUIT, block SIGCHLD. Remember to save
225 * existing signal dispositions.
227 ign.sa_handler = SIG_IGN;
228 ::sigemptyset(&ign.sa_mask);
230 ::sigaction(SIGINT, &ign, &intact);
231 ::sigaction(SIGQUIT, &ign, &quitact);
232 ::sigemptyset(&newsigblock);
233 ::sigaddset(&newsigblock, SIGCHLD);
234 ::sigprocmask(SIG_BLOCK, &newsigblock, &oldsigblock);
235 switch (pid = ::fork()) {
240 * Restore original signal dispositions and exec the command.
242 ::sigaction(SIGINT, &intact, NULL);
243 ::sigaction(SIGQUIT, &quitact, NULL);
244 ::sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
246 * Close the PID file, and all other open descriptors.
247 * Inherit std{in,out,err} only.
251 ::execl(_PATH_BSHELL, "sh", "-c", command, (char *)NULL);
253 default: /* parent */
256 pid = ::wait4(savedpid, &pstat, 0, (struct rusage *)0);
257 } while (pid == -1 && errno == EINTR);
260 ::sigaction(SIGINT, &intact, NULL);
261 ::sigaction(SIGQUIT, &quitact, NULL);
262 ::sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
263 return (pid == -1 ? -1 : pstat);
267 action::do_action(config &c)
269 string s = c.expand_string(_cmd.c_str());
270 devdlog(LOG_INFO, "Executing '%s'\n", s.c_str());
271 my_system(s.c_str());
275 match::match(config &c, const char *var, const char *re) :
278 _re(c.expand_string(_inv ? re + 1 : re, "^", "$"))
280 regcomp(&_regex, _re.c_str(), REG_EXTENDED | REG_NOSUB | REG_ICASE);
289 match::do_match(config &c)
291 const string &value = c.get_variable(_var);
295 * This function gets called WAY too often to justify calling syslog()
296 * each time, even at LOG_DEBUG. Because if syslogd isn't running, it
297 * can consume excessive amounts of systime inside of connect(). Only
298 * log when we're in -d mode.
301 devdlog(LOG_DEBUG, "Testing %s=%s against %s, invert=%d\n",
302 _var.c_str(), value.c_str(), _re.c_str(), _inv);
305 retval = (regexec(&_regex, value.c_str(), 0, NULL, 0) == 0);
307 retval = (retval == 0) ? 1 : 0;
312 #include <sys/sockio.h>
314 #include <net/if_media.h>
316 media::media(config &, const char *var, const char *type)
317 : _var(var), _type(-1)
319 static struct ifmedia_description media_types[] = {
320 { IFM_ETHER, "Ethernet" },
321 { IFM_IEEE80211, "802.11" },
323 { IFM_CARP, "CARP" },
327 for (int i = 0; media_types[i].ifmt_string != NULL; ++i)
328 if (strcasecmp(type, media_types[i].ifmt_string) == 0) {
329 _type = media_types[i].ifmt_word;
339 media::do_match(config &c)
342 struct ifmediareq ifmr;
346 // Since we can be called from both a device attach/detach
347 // context where device-name is defined and what we want,
348 // as well as from a link status context, where subsystem is
349 // the name of interest, first try device-name and fall back
350 // to subsystem if none exists.
351 value = c.get_variable("device-name");
353 value = c.get_variable("subsystem");
354 devdlog(LOG_DEBUG, "Testing media type of %s against 0x%x\n",
355 value.c_str(), _type);
359 s = socket(PF_INET, SOCK_DGRAM, 0);
361 memset(&ifmr, 0, sizeof(ifmr));
362 strncpy(ifmr.ifm_name, value.c_str(), sizeof(ifmr.ifm_name));
364 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) >= 0 &&
365 ifmr.ifm_status & IFM_AVALID) {
366 devdlog(LOG_DEBUG, "%s has media type 0x%x\n",
367 value.c_str(), IFM_TYPE(ifmr.ifm_active));
368 retval = (IFM_TYPE(ifmr.ifm_active) == _type);
369 } else if (_type == -1) {
370 devdlog(LOG_DEBUG, "%s has unknown media type\n",
380 const string var_list::bogus = "_$_$_$_$_B_O_G_U_S_$_$_$_$_";
381 const string var_list::nothing = "";
384 var_list::get_variable(const string &var) const
386 map<string, string>::const_iterator i;
389 if (i == _vars.end())
390 return (var_list::bogus);
395 var_list::is_set(const string &var) const
397 return (_vars.find(var) != _vars.end());
401 var_list::set_variable(const string &var, const string &val)
404 * This function gets called WAY too often to justify calling syslog()
405 * each time, even at LOG_DEBUG. Because if syslogd isn't running, it
406 * can consume excessive amounts of systime inside of connect(). Only
407 * log when we're in -d mode.
410 devdlog(LOG_DEBUG, "setting %s=%s\n", var.c_str(), val.c_str());
418 delete_and_clear(_var_list_table);
419 delete_and_clear(_attach_list);
420 delete_and_clear(_detach_list);
421 delete_and_clear(_nomatch_list);
422 delete_and_clear(_notify_list);
426 config::parse_one_file(const char *fn)
428 devdlog(LOG_DEBUG, "Parsing %s\n", fn);
429 yyin = fopen(fn, "r");
431 err(1, "Cannot open config file %s", fn);
434 errx(1, "Cannot parse %s at line %d", fn, lineno);
439 config::parse_files_in_dir(const char *dirname)
445 devdlog(LOG_DEBUG, "Parsing files in %s\n", dirname);
446 dirp = opendir(dirname);
449 readdir(dirp); /* Skip . */
450 readdir(dirp); /* Skip .. */
451 while ((dp = readdir(dirp)) != NULL) {
452 if (strcmp(dp->d_name + dp->d_namlen - 5, ".conf") == 0) {
453 snprintf(path, sizeof(path), "%s/%s",
454 dirname, dp->d_name);
455 parse_one_file(path);
463 int operator()(event_proc *const&l1, event_proc *const&l2) const
465 return (l1->get_priority() > l2->get_priority());
470 config::sort_vector(vector<event_proc *> &v)
472 stable_sort(v.begin(), v.end(), epv_greater());
478 vector<string>::const_iterator i;
480 parse_one_file(configfile);
481 for (i = _dir_list.begin(); i != _dir_list.end(); ++i)
482 parse_files_in_dir((*i).c_str());
483 sort_vector(_attach_list);
484 sort_vector(_detach_list);
485 sort_vector(_nomatch_list);
486 sort_vector(_notify_list);
490 config::open_pidfile()
494 if (_pidfile.empty())
496 pfh = pidfile_open(_pidfile.c_str(), 0600, &otherpid);
499 errx(1, "devd already running, pid: %d", (int)otherpid);
500 warn("cannot open pid file");
505 config::write_pidfile()
512 config::close_pidfile()
519 config::remove_pidfile()
526 config::add_attach(int prio, event_proc *p)
528 p->set_priority(prio);
529 _attach_list.push_back(p);
533 config::add_detach(int prio, event_proc *p)
535 p->set_priority(prio);
536 _detach_list.push_back(p);
540 config::add_directory(const char *dir)
542 _dir_list.push_back(string(dir));
546 config::add_nomatch(int prio, event_proc *p)
548 p->set_priority(prio);
549 _nomatch_list.push_back(p);
553 config::add_notify(int prio, event_proc *p)
555 p->set_priority(prio);
556 _notify_list.push_back(p);
560 config::set_pidfile(const char *fn)
566 config::push_var_table()
571 _var_list_table.push_back(vl);
572 devdlog(LOG_DEBUG, "Pushing table\n");
576 config::pop_var_table()
578 delete _var_list_table.back();
579 _var_list_table.pop_back();
580 devdlog(LOG_DEBUG, "Popping table\n");
584 config::set_variable(const char *var, const char *val)
586 _var_list_table.back()->set_variable(var, val);
590 config::get_variable(const string &var)
592 vector<var_list *>::reverse_iterator i;
594 for (i = _var_list_table.rbegin(); i != _var_list_table.rend(); ++i) {
595 if ((*i)->is_set(var))
596 return ((*i)->get_variable(var));
598 return (var_list::nothing);
602 config::is_id_char(char ch) const
604 return (ch != '\0' && (isalpha(ch) || isdigit(ch) || ch == '_' ||
609 config::expand_one(const char *&src, string &dst)
622 // Not sure if I want to support this or not, so for now we just pass
627 /* If the string ends before ) is matched , return. */
628 while (count > 0 && *src) {
631 else if (*src == '(')
639 if (!isalpha(*src)) {
645 // $var -> replace with value
648 } while (is_id_char(*src));
649 dst.append(get_variable(buffer));
653 config::expand_string(const char *src, const char *prepend, const char *append)
659 * 128 bytes is enough for 2427 of 2438 expansions that happen
660 * while parsing config files, as tested on 2013-01-30.
668 var_at = strchr(src, '$');
669 if (var_at == NULL) {
673 dst.append(src, var_at - src);
675 expand_one(src, dst);
685 config::chop_var(char *&buffer, char *&lhs, char *&rhs) const
691 walker = lhs = buffer;
692 while (is_id_char(*walker))
697 if (*walker == '"') {
700 while (*walker && *walker != '"')
708 while (*walker && !isspace(*walker))
714 while (isspace(*walker))
722 config::set_vars(char *buffer)
728 if (!chop_var(buffer, lhs, rhs))
730 set_variable(lhs, rhs);
736 config::find_and_execute(char type)
738 vector<event_proc *> *l;
739 vector<event_proc *>::const_iterator i;
762 devdlog(LOG_DEBUG, "Processing %s event\n", s);
763 for (i = l->begin(); i != l->end(); ++i) {
764 if ((*i)->matches(*this)) {
774 process_event(char *buffer)
780 devdlog(LOG_INFO, "Processing event '%s'\n", buffer);
782 cfg.push_var_table();
783 // No match doesn't have a device, and the format is a little
784 // different, so handle it separately.
787 sp = cfg.set_vars(sp);
790 //? at location pnp-info on bus
791 sp = strchr(sp, ' ');
793 return; /* Can't happen? */
797 if (strncmp(sp, "at ", 3) == 0)
799 sp = cfg.set_vars(sp);
802 if (strncmp(sp, "on ", 3) == 0)
803 cfg.set_variable("bus", sp + 3);
805 case attach: /*FALLTHROUGH*/
807 sp = strchr(sp, ' ');
809 return; /* Can't happen? */
811 cfg.set_variable("device-name", buffer);
814 if (strncmp(sp, "at ", 3) == 0)
816 sp = cfg.set_vars(sp);
819 if (strncmp(sp, "on ", 3) == 0)
820 cfg.set_variable("bus", sp + 3);
824 cfg.find_and_execute(type);
829 create_socket(const char *name, int socktype)
832 struct sockaddr_un sun;
834 if ((fd = socket(PF_LOCAL, socktype, 0)) < 0)
836 bzero(&sun, sizeof(sun));
837 sun.sun_family = AF_UNIX;
838 strlcpy(sun.sun_path, name, sizeof(sun.sun_path));
839 slen = SUN_LEN(&sun);
841 if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
843 if (::bind(fd, (struct sockaddr *) & sun, slen) < 0)
846 chown(name, 0, 0); /* XXX - root.wheel */
851 unsigned int max_clients = 10; /* Default, can be overridden on cmdline. */
852 unsigned int num_clients;
854 list<client_t> clients;
857 notify_clients(const char *data, int len)
859 list<client_t>::iterator i;
862 * Deliver the data to all clients. Throw clients overboard at the
863 * first sign of trouble. This reaps clients who've died or closed
864 * their sockets, and also clients who are alive but failing to keep up
865 * (or who are maliciously not reading, to consume buffer space in
866 * kernel memory or tie up the limited number of available connections).
868 for (i = clients.begin(); i != clients.end(); ) {
870 if (i->socktype == SOCK_SEQPACKET)
875 if (send(i->fd, data, len, flags) != len) {
878 i = clients.erase(i);
879 devdlog(LOG_WARNING, "notify_clients: send() failed; "
880 "dropping unresponsive client\n");
891 list<client_t>::iterator i;
894 * Check all existing clients to see if any of them have disappeared.
895 * Normally we reap clients when we get an error trying to send them an
896 * event. This check eliminates the problem of an ever-growing list of
897 * zombie clients because we're never writing to them on a system
898 * without frequent device-change activity.
901 for (i = clients.begin(); i != clients.end(); ) {
903 s = poll(&pfd, 1, 0);
904 if ((s < 0 && s != EINTR ) ||
905 (s > 0 && (pfd.revents & POLLHUP))) {
908 i = clients.erase(i);
909 devdlog(LOG_NOTICE, "check_clients: "
910 "dropping disconnected client\n");
917 new_client(int fd, int socktype)
923 * First go reap any zombie clients, then accept the connection, and
924 * shut down the read side to stop clients from consuming kernel memory
925 * by sending large buffers full of data we'll never read.
928 s.socktype = socktype;
929 s.fd = accept(fd, NULL, NULL);
931 sndbuf_size = CLIENT_BUFSIZE;
932 if (setsockopt(s.fd, SOL_SOCKET, SO_SNDBUF, &sndbuf_size,
933 sizeof(sndbuf_size)))
934 err(1, "setsockopt");
935 shutdown(s.fd, SHUT_RD);
936 clients.push_back(s);
947 char buffer[DEVCTL_MAXBUF];
949 int stream_fd, seqpacket_fd, max_fd;
954 fd = open(PATH_DEVCTL, O_RDONLY | O_CLOEXEC);
956 err(1, "Can't open devctl device %s", PATH_DEVCTL);
957 stream_fd = create_socket(STREAMPIPE, SOCK_STREAM);
958 seqpacket_fd = create_socket(SEQPACKETPIPE, SOCK_SEQPACKET);
960 max_fd = max(fd, max(stream_fd, seqpacket_fd)) + 1;
961 while (!romeo_must_die) {
962 if (!once && !no_daemon && !daemonize_quick) {
963 // Check to see if we have any events pending.
968 rv = select(fd + 1, &fds, NULL, NULL, &tv);
969 // No events -> we've processed all pending events
971 devdlog(LOG_DEBUG, "Calling daemon\n");
972 cfg.remove_pidfile();
980 * When we've already got the max number of clients, stop
981 * accepting new connections (don't put the listening sockets in
982 * the set), shrink the accept() queue to reject connections
983 * quickly, and poll the existing clients more often, so that we
984 * notice more quickly when any of them disappear to free up
989 if (num_clients < max_clients) {
991 listen(stream_fd, max_clients);
992 listen(seqpacket_fd, max_clients);
995 FD_SET(stream_fd, &fds);
996 FD_SET(seqpacket_fd, &fds);
1001 listen(stream_fd, 0);
1002 listen(seqpacket_fd, 0);
1008 rv = select(max_fd, &fds, NULL, NULL, &tv);
1010 devdlog(LOG_NOTICE, "Events received so far=%u\n",
1020 if (FD_ISSET(fd, &fds)) {
1021 rv = read(fd, buffer, sizeof(buffer) - 1);
1024 if (rv == sizeof(buffer) - 1) {
1025 devdlog(LOG_WARNING, "Warning: "
1026 "available event data exceeded "
1029 notify_clients(buffer, rv);
1031 while (buffer[--rv] == '\n')
1033 process_event(buffer);
1034 } else if (rv < 0) {
1042 if (FD_ISSET(stream_fd, &fds))
1043 new_client(stream_fd, SOCK_STREAM);
1045 * Aside from the socket type, both sockets use the same
1046 * protocol, so we can process clients the same way.
1048 if (FD_ISSET(seqpacket_fd, &fds))
1049 new_client(seqpacket_fd, SOCK_SEQPACKET);
1055 * functions that the parser uses.
1058 add_attach(int prio, event_proc *p)
1060 cfg.add_attach(prio, p);
1064 add_detach(int prio, event_proc *p)
1066 cfg.add_detach(prio, p);
1070 add_directory(const char *dir)
1072 cfg.add_directory(dir);
1073 free(const_cast<char *>(dir));
1077 add_nomatch(int prio, event_proc *p)
1079 cfg.add_nomatch(prio, p);
1083 add_notify(int prio, event_proc *p)
1085 cfg.add_notify(prio, p);
1089 add_to_event_proc(event_proc *ep, eps *eps)
1092 ep = new event_proc();
1098 new_action(const char *cmd)
1100 eps *e = new action(cmd);
1101 free(const_cast<char *>(cmd));
1106 new_match(const char *var, const char *re)
1108 eps *e = new match(cfg, var, re);
1109 free(const_cast<char *>(var));
1110 free(const_cast<char *>(re));
1115 new_media(const char *var, const char *re)
1117 eps *e = new media(cfg, var, re);
1118 free(const_cast<char *>(var));
1119 free(const_cast<char *>(re));
1124 set_pidfile(const char *name)
1126 cfg.set_pidfile(name);
1127 free(const_cast<char *>(name));
1131 set_variable(const char *var, const char *val)
1133 cfg.set_variable(var, val);
1134 free(const_cast<char *>(var));
1135 free(const_cast<char *>(val));
1147 * SIGINFO handler. Will print useful statistics to the syslog or stderr
1157 * Local logging function. Prints to syslog if we're daemonized; stderr
1161 devdlog(int priority, const char* fmt, ...)
1165 va_start(argp, fmt);
1167 vfprintf(stderr, fmt, argp);
1168 else if ((! quiet_mode) || (priority <= LOG_WARNING))
1169 vsyslog(priority, fmt, argp);
1176 fprintf(stderr, "usage: %s [-dnq] [-l connlimit] [-f file]\n",
1182 check_devd_enabled()
1188 if (sysctlbyname(SYSCTL, &val, &len, NULL, 0) != 0)
1189 errx(1, "devctl sysctl missing from kernel!");
1191 warnx("Setting " SYSCTL " to 0");
1193 sysctlbyname(SYSCTL, NULL, NULL, &val, sizeof(val));
1201 main(int argc, char **argv)
1205 check_devd_enabled();
1206 while ((ch = getopt(argc, argv, "df:l:nq")) != -1) {
1212 configfile = optarg;
1215 max_clients = MAX(1, strtoul(optarg, NULL, 0));
1218 daemonize_quick = 1;
1229 if (!no_daemon && daemonize_quick) {
1232 cfg.write_pidfile();
1234 signal(SIGPIPE, SIG_IGN);
1235 signal(SIGHUP, gensighand);
1236 signal(SIGINT, gensighand);
1237 signal(SIGTERM, gensighand);
1238 signal(SIGINFO, siginfohand);