2 * APM (Advanced Power Management) Event Dispatcher
4 * Copyright (c) 1999 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
5 * Copyright (c) 1999 KOIE Hidetaka <koie@suri.co.jp>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/usr.sbin/apmd/apmd.c,v 1.3.2.1 2001/08/13 17:30:30 nsayer Exp $
30 * $DragonFly: src/usr.sbin/apmd/apmd.c,v 1.3 2003/11/15 20:33:42 eirikn Exp $
34 #include <bitstring.h>
45 #include <sys/ioctl.h>
46 #include <sys/types.h>
49 #include <machine/apm_bios.h>
53 extern int yyparse(void);
57 const char *apmd_configfile = APMD_CONFIGFILE;
58 const char *apmd_pidfile = APMD_PIDFILE;
59 int apmctl_fd = -1, apmnorm_fd = -1;
62 * table of event handlers
64 #define EVENT_CONFIG_INITIALIZER(EV,R) { #EV, NULL, R },
65 struct event_config events[EVENT_MAX] = {
66 EVENT_CONFIG_INITIALIZER(NOEVENT, 0)
67 EVENT_CONFIG_INITIALIZER(STANDBYREQ, 1)
68 EVENT_CONFIG_INITIALIZER(SUSPENDREQ, 1)
69 EVENT_CONFIG_INITIALIZER(NORMRESUME, 0)
70 EVENT_CONFIG_INITIALIZER(CRITRESUME, 0)
71 EVENT_CONFIG_INITIALIZER(BATTERYLOW, 0)
72 EVENT_CONFIG_INITIALIZER(POWERSTATECHANGE, 0)
73 EVENT_CONFIG_INITIALIZER(UPDATETIME, 0)
74 EVENT_CONFIG_INITIALIZER(CRITSUSPEND, 1)
75 EVENT_CONFIG_INITIALIZER(USERSTANDBYREQ, 1)
76 EVENT_CONFIG_INITIALIZER(USERSUSPENDREQ, 1)
77 EVENT_CONFIG_INITIALIZER(STANDBYRESUME, 0)
78 EVENT_CONFIG_INITIALIZER(CAPABILITIESCHANGE, 0)
82 * List of battery events
84 struct battery_watch_event *battery_watch_list = NULL;
86 #define BATT_CHK_INTV 10 /* how many seconds between battery state checks? */
92 event_cmd_default_clone(void *this)
94 struct event_cmd * oldone = this;
95 struct event_cmd * newone = malloc(oldone->len);
98 newone->len = oldone->len;
99 newone->name = oldone->name;
100 newone->op = oldone->op;
108 event_cmd_exec_act(void *this)
110 struct event_cmd_exec * p = this;
114 switch ((pid = fork())) {
116 (void) warn("cannot fork");
120 execl(_PATH_BSHELL, "sh", "-c", p->line, (char *)NULL);
125 pid = waitpid(pid, &status, 0);
126 } while (pid == -1 && errno == EINTR);
133 event_cmd_exec_dump(void *this, FILE *fp)
135 fprintf(fp, " \"%s\"", ((struct event_cmd_exec *)this)->line);
138 event_cmd_exec_clone(void *this)
140 struct event_cmd_exec * newone = (struct event_cmd_exec *) event_cmd_default_clone(this);
141 struct event_cmd_exec * oldone = this;
143 newone->evcmd.next = NULL;
144 newone->evcmd.len = oldone->evcmd.len;
145 newone->evcmd.name = oldone->evcmd.name;
146 newone->evcmd.op = oldone->evcmd.op;
147 if ((newone->line = strdup(oldone->line)) == NULL)
148 err(1, "out of memory");
149 return (struct event_cmd *) newone;
152 event_cmd_exec_free(void *this)
154 free(((struct event_cmd_exec *)this)->line);
156 struct event_cmd_op event_cmd_exec_ops = {
159 event_cmd_exec_clone,
167 event_cmd_reject_act(void *this)
171 if (ioctl(apmctl_fd, APMIO_REJECTLASTREQ, NULL)) {
172 syslog(LOG_NOTICE, "fail to reject\n");
179 struct event_cmd_op event_cmd_reject_ops = {
180 event_cmd_reject_act,
182 event_cmd_default_clone,
187 * manipulate event_config
190 clone_event_cmd_list(struct event_cmd *p)
192 struct event_cmd dummy;
193 struct event_cmd *q = &dummy;
194 for ( ;p; p = p->next) {
195 assert(p->op->clone);
196 if ((q->next = p->op->clone(p)) == NULL)
197 (void) err(1, "out of memory");
204 free_event_cmd_list(struct event_cmd *p)
206 struct event_cmd * q;
215 register_battery_handlers(
216 int level, int direction,
217 struct event_cmd *cmdlist)
220 * level is negative if it's in "minutes", non-negative if
223 * direction =1 means we care about this level when charging,
224 * direction =-1 means we care about it when discharging.
226 if (level>100) /* percentage > 100 */
228 if (abs(direction) != 1) /* nonsense direction value */
232 struct battery_watch_event *we;
234 if ((we = malloc(sizeof(struct battery_watch_event))) == NULL)
235 (void) err(1, "out of memory");
237 we->next = battery_watch_list; /* starts at NULL */
238 battery_watch_list = we;
239 we->level = abs(level);
240 we->type = (level<0)?BATTERY_MINUTES:BATTERY_PERCENT;
241 we->direction = (direction<0)?BATTERY_DISCHARGING:
244 we->cmdlist = clone_event_cmd_list(cmdlist);
249 register_apm_event_handlers(
250 bitstr_t bit_decl(evlist, EVENT_MAX),
251 struct event_cmd *cmdlist)
254 bitstr_t bit_decl(tmp, EVENT_MAX);
255 memcpy(&tmp, evlist, bitstr_size(EVENT_MAX));
261 bit_ffs(tmp, EVENT_MAX, &n);
264 p = events[n].cmdlist;
265 if ((q = clone_event_cmd_list(cmdlist)) == NULL)
266 (void) err(1, "out of memory");
268 while (p->next != NULL)
272 events[n].cmdlist = q;
284 exec_run_cmd(struct event_cmd *p)
288 for (; p; p = p->next) {
291 syslog(LOG_INFO, "action: %s", p->name);
292 status = p->op->act(p);
294 syslog(LOG_NOTICE, "command finished with %d\n", status);
302 * execute command -- the event version
305 exec_event_cmd(struct event_config *ev)
309 status = exec_run_cmd(ev->cmdlist);
310 if (status && ev->rejectable) {
311 syslog(LOG_ERR, "canceled");
312 (void) event_cmd_reject_act(NULL);
328 if ((yyin = fopen(apmd_configfile, "r")) == NULL) {
329 (void) err(1, "cannot open config file");
333 yydebug = debug_level;
337 (void) err(1, "cannot parse config file");
342 for (i = 0; i < EVENT_MAX; i++) {
343 if (events[i].cmdlist) {
344 u_int event_type = i;
345 if (write(apmctl_fd, &event_type, sizeof(u_int)) == -1) {
346 (void) err(1, "cannot enable event 0x%x", event_type);
356 struct battery_watch_event *q;
358 for (i = 0; i < EVENT_MAX; i++) {
359 struct event_cmd * p;
360 if ((p = events[i].cmdlist)) {
361 fprintf(stderr, "apm_event %s {\n", events[i].name);
362 for ( ; p ; p = p->next) {
363 fprintf(stderr, "\t%s", p->name);
365 p->op->dump(p, stderr);
366 fprintf(stderr, ";\n");
368 fprintf(stderr, "}\n");
371 for (q = battery_watch_list ; q != NULL ; q = q -> next) {
372 struct event_cmd * p;
373 fprintf(stderr, "apm_battery %d%s %s {\n",
375 (q -> type == BATTERY_PERCENT)?"%":"m",
376 (q -> direction == BATTERY_CHARGING)?"charging":
378 for ( p = q -> cmdlist; p ; p = p->next) {
379 fprintf(stderr, "\t%s", p->name);
381 p->op->dump(p, stderr);
382 fprintf(stderr, ";\n");
384 fprintf(stderr, "}\n");
392 struct battery_watch_event *q;
395 for (i = 0; i < EVENT_MAX; i++) {
396 if (events[i].cmdlist) {
397 u_int event_type = i;
398 if (write(apmctl_fd, &event_type, sizeof(u_int)) == -1) {
399 (void) err(1, "cannot disable event 0x%x", event_type);
404 for (i = 0; i < EVENT_MAX; i++) {
405 struct event_cmd * p;
406 if ((p = events[i].cmdlist))
407 free_event_cmd_list(p);
408 events[i].cmdlist = NULL;
411 for( ; battery_watch_list; battery_watch_list = battery_watch_list -> next) {
412 free_event_cmd_list(battery_watch_list->cmdlist);
413 q = battery_watch_list->next;
414 free(battery_watch_list);
415 battery_watch_list = q;
434 FILE *fp = fopen(apmd_pidfile, "w");
437 fprintf(fp, "%d\n", getpid());
445 static int signal_fd[2];
448 enque_signal(int sig)
450 if (write(signal_fd[1], &sig, sizeof sig) != sizeof sig)
451 (void) err(1, "cannot process signal.");
458 while (waitpid(-1, &status, WNOHANG) > 0)
468 while (read(fd, &sig, sizeof sig) == sizeof sig) {
469 syslog(LOG_INFO, "caught signal: %d", sig);
472 syslog(LOG_NOTICE, "restart by SIG");
476 syslog(LOG_NOTICE, "going down on signal %d", sig);
483 (void) warn("unexpected signal(%d) received.", sig);
492 proc_apmevent(int fd)
494 struct apm_event_info apmevent;
496 while (ioctl(fd, APMIO_NEXTEVENT, &apmevent) == 0) {
498 syslog(LOG_NOTICE, "apmevent %04x index %d\n",
499 apmevent.type, apmevent.index);
500 syslog(LOG_INFO, "apm event: %s", events[apmevent.type].name);
502 status = exec_event_cmd(&events[apmevent.type]);
508 #define AC_POWER_STATE ((pw_info.ai_acline == 1) ? BATTERY_CHARGING :\
515 static int first_time=1, last_state;
517 struct apm_info pw_info;
518 struct battery_watch_event *p;
520 /* If we don't care, don't bother */
521 if (battery_watch_list == NULL)
525 if ( ioctl(apmnorm_fd, APMIO_GETINFO, &pw_info) < 0)
526 (void) err(1, "cannot check battery state.");
528 * This next statement isn't entirely true. The spec does not tie AC
529 * line state to battery charging or not, but this is a bit lazier to do.
531 last_state = AC_POWER_STATE;
533 return; /* We can't process events, we have no baseline */
537 * XXX - should we do this a bunch of times and perform some sort
538 * of smoothing or correction?
540 if ( ioctl(apmnorm_fd, APMIO_GETINFO, &pw_info) < 0)
541 (void) err(1, "cannot check battery state.");
544 * If we're not in the state now that we were in last time,
545 * then it's a transition, which means we must clean out
546 * the event-caught state.
548 if (last_state != AC_POWER_STATE) {
549 last_state = AC_POWER_STATE;
550 for (p = battery_watch_list ; p!=NULL ; p = p -> next)
553 for (p = battery_watch_list ; p != NULL ; p = p -> next)
554 if (p -> direction == AC_POWER_STATE &&
556 ((p -> type == BATTERY_PERCENT &&
557 p -> level == pw_info.ai_batt_life) ||
558 (p -> type == BATTERY_MINUTES &&
559 p -> level == (pw_info.ai_batt_time / 60)))) {
562 syslog(LOG_NOTICE, "Caught battery event: %s, %d%s",
563 (p -> direction == BATTERY_CHARGING)?"charging":"discharging",
565 (p -> type == BATTERY_PERCENT)?"%":" minutes");
568 status = exec_run_cmd(p -> cmdlist);
577 struct sigaction nsa;
579 sigset_t sigmask, osigmask;
581 FD_ZERO(&master_rfds);
582 FD_SET(apmctl_fd, &master_rfds);
583 fdmax = apmctl_fd > fdmax ? apmctl_fd : fdmax;
585 FD_SET(signal_fd[0], &master_rfds);
586 fdmax = signal_fd[0] > fdmax ? signal_fd[0] : fdmax;
588 memset(&nsa, 0, sizeof nsa);
589 nsa.sa_handler = enque_signal;
590 sigfillset(&nsa.sa_mask);
591 nsa.sa_flags = SA_RESTART;
592 sigaction(SIGHUP, &nsa, NULL);
593 sigaction(SIGCHLD, &nsa, NULL);
594 sigaction(SIGTERM, &nsa, NULL);
596 sigemptyset(&sigmask);
597 sigaddset(&sigmask, SIGHUP);
598 sigaddset(&sigmask, SIGCHLD);
599 sigaddset(&sigmask, SIGTERM);
600 sigprocmask(SIG_SETMASK, &sigmask, &osigmask);
607 to.tv_sec = BATT_CHK_INTV;
610 memcpy(&rfds, &master_rfds, sizeof rfds);
611 sigprocmask(SIG_SETMASK, &osigmask, NULL);
612 if ((res=select(fdmax + 1, &rfds, 0, 0, &to)) < 0) {
614 (void) err(1, "select");
616 sigprocmask(SIG_SETMASK, &sigmask, NULL);
618 if (res == 0) { /* time to check the battery */
623 if (FD_ISSET(signal_fd[0], &rfds)) {
624 if (proc_signal(signal_fd[0]) < 0)
628 if (FD_ISSET(apmctl_fd, &rfds))
629 proc_apmevent(apmctl_fd);
636 main(int ac, char* av[])
641 int logopt = LOG_NDELAY | LOG_PID;
643 while ((ch = getopt(ac, av, "df:v")) != EOF) {
650 apmd_configfile = optarg;
656 (void) err(1, "unknown option `%c'", ch);
664 (void) nice(NICE_INCR);
668 logopt |= LOG_PERROR;
670 prog = strrchr(av[0], '/');
671 openlog(prog ? prog+1 : av[0], logopt, LOG_DAEMON);
673 syslog(LOG_NOTICE, "start");
675 if (pipe(signal_fd) < 0)
676 (void) err(1, "pipe");
677 if (fcntl(signal_fd[0], F_SETFL, O_NONBLOCK) < 0)
678 (void) err(1, "fcntl");
680 if ((apmnorm_fd = open(APM_NORM_DEVICEFILE, O_RDWR)) == -1) {
681 (void) err(1, "cannot open device file `%s'", APM_NORM_DEVICEFILE);
684 if ((apmctl_fd = open(APM_CTL_DEVICEFILE, O_RDWR)) == -1) {
685 (void) err(1, "cannot open device file `%s'", APM_CTL_DEVICEFILE);