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Commit | Line | Data |
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76700389 BW |
1 | /* |
2 | * rtcwake -- enter a system sleep state until specified wakeup time. | |
3 | * | |
4 | * This uses cross-platform Linux interfaces to enter a system sleep state, | |
5 | * and leave it no later than a specified time. It uses any RTC framework | |
6 | * driver that supports standard driver model wakeup flags. | |
7 | * | |
8 | * This is normally used like the old "apmsleep" utility, to wake from a | |
9 | * suspend state like ACPI S1 (standby) or S3 (suspend-to-RAM). Most | |
10 | * platforms can implement those without analogues of BIOS, APM, or ACPI. | |
11 | * | |
12 | * On some systems, this can also be used like "nvram-wakeup", waking | |
13 | * from states like ACPI S4 (suspend to disk). Not all systems have | |
14 | * persistent media that are appropriate for such suspend modes. | |
15 | * | |
16 | * The best way to set the system's RTC is so that it holds the current | |
17 | * time in UTC. Use the "-l" flag to tell this program that the system | |
18 | * RTC uses a local timezone instead (maybe you dual-boot MS-Windows). | |
2148b051 | 19 | * That flag should not be needed on systems with adjtime support. |
76700389 BW |
20 | */ |
21 | ||
22 | #include <stdio.h> | |
23 | #include <getopt.h> | |
24 | #include <fcntl.h> | |
c41e1340 | 25 | #include <libgen.h> |
76700389 BW |
26 | #include <stdlib.h> |
27 | #include <string.h> | |
28 | #include <unistd.h> | |
29 | #include <errno.h> | |
30 | #include <time.h> | |
31 | ||
32 | #include <sys/ioctl.h> | |
33 | #include <sys/time.h> | |
34 | #include <sys/types.h> | |
35 | ||
36 | #include <linux/rtc.h> | |
37 | ||
38 | #include "nls.h" | |
2ab428f6 | 39 | #include "xalloc.h" |
77f5744c | 40 | #include "pathnames.h" |
437fa54f | 41 | #include "usleep.h" |
07b336c9 | 42 | #include "strutils.h" |
eb76ca98 | 43 | #include "c.h" |
76700389 BW |
44 | |
45 | /* constants from legacy PC/AT hardware */ | |
46 | #define RTC_PF 0x40 | |
47 | #define RTC_AF 0x20 | |
48 | #define RTC_UF 0x10 | |
49 | ||
50 | #define MAX_LINE 1024 | |
51 | ||
76700389 BW |
52 | #define VERSION_STRING "rtcwake from " PACKAGE_STRING |
53 | #define RTC_PATH "/sys/class/rtc/%s/device/power/wakeup" | |
d3cf5414 | 54 | #define SYS_POWER_STATE_PATH "/sys/power/state" |
76700389 BW |
55 | #define ADJTIME_PATH "/etc/adjtime" |
56 | #define DEFAULT_DEVICE "/dev/rtc0" | |
47bf8ef7 | 57 | #define DEFAULT_MODE "standby" |
76700389 BW |
58 | |
59 | enum ClockMode { | |
60 | CM_AUTO, | |
61 | CM_UTC, | |
62 | CM_LOCAL | |
63 | }; | |
64 | ||
65 | static unsigned verbose; | |
569f3ca2 | 66 | static unsigned dryrun; |
76700389 BW |
67 | enum ClockMode clock_mode = CM_AUTO; |
68 | ||
69 | static struct option long_options[] = { | |
70 | {"auto", no_argument, 0, 'a'}, | |
569f3ca2 | 71 | {"dry-run", no_argument, 0, 'n'}, |
76700389 BW |
72 | {"local", no_argument, 0, 'l'}, |
73 | {"utc", no_argument, 0, 'u'}, | |
74 | {"verbose", no_argument, 0, 'v'}, | |
75 | {"version", no_argument, 0, 'V'}, | |
76 | {"help", no_argument, 0, 'h'}, | |
77 | {"mode", required_argument, 0, 'm'}, | |
78 | {"device", required_argument, 0, 'd'}, | |
79 | {"seconds", required_argument, 0, 's'}, | |
80 | {"time", required_argument, 0, 't'}, | |
81 | {0, 0, 0, 0 } | |
82 | }; | |
83 | ||
07b336c9 | 84 | static void __attribute__((__noreturn__)) usage(FILE *out) |
76700389 | 85 | { |
07b336c9 KZ |
86 | fprintf(out, _("Usage: %s [options]\n\nOptions:\n"), |
87 | program_invocation_short_name); | |
88 | ||
89 | fprintf(out, _( | |
76700389 | 90 | " -d | --device <device> select rtc device (rtc0|rtc1|...)\n" |
569f3ca2 | 91 | " -n | --dry-run does everything, but suspend\n" |
76700389 | 92 | " -l | --local RTC uses local timezone\n" |
07b336c9 | 93 | " -m | --mode <mode> standby|mem|... sleep mode\n" |
76700389 BW |
94 | " -s | --seconds <seconds> seconds to sleep\n" |
95 | " -t | --time <time_t> time to wake\n" | |
96 | " -u | --utc RTC uses UTC\n" | |
97 | " -v | --verbose verbose messages\n" | |
07b336c9 KZ |
98 | " -V | --version show version\n")); |
99 | ||
100 | fprintf(out, _("\nFor more information see rtcwake(8).\n")); | |
101 | ||
102 | exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); | |
76700389 BW |
103 | } |
104 | ||
f8d87ab1 | 105 | static int is_wakeup_enabled(const char *devname) |
76700389 BW |
106 | { |
107 | char buf[128], *s; | |
108 | FILE *f; | |
109 | ||
110 | /* strip the '/dev/' from the devname here */ | |
111 | snprintf(buf, sizeof buf, RTC_PATH, devname + strlen("/dev/")); | |
112 | f = fopen(buf, "r"); | |
113 | if (!f) { | |
07b336c9 | 114 | warn(_("open failed: %s"), buf); |
76700389 BW |
115 | return 0; |
116 | } | |
117 | s = fgets(buf, sizeof buf, f); | |
118 | fclose(f); | |
119 | if (!s) | |
120 | return 0; | |
121 | ||
122 | s = strchr(buf, '\n'); | |
123 | if (!s) | |
124 | return 0; | |
125 | *s = 0; | |
126 | ||
127 | /* wakeup events could be disabled or not supported */ | |
128 | return strcmp(buf, "enabled") == 0; | |
129 | } | |
130 | ||
131 | /* all times should be in UTC */ | |
132 | static time_t sys_time; | |
133 | static time_t rtc_time; | |
134 | ||
135 | static int get_basetimes(int fd) | |
136 | { | |
137 | struct tm tm; | |
138 | struct rtc_time rtc; | |
139 | ||
140 | /* this process works in RTC time, except when working | |
141 | * with the system clock (which always uses UTC). | |
142 | */ | |
143 | if (clock_mode == CM_UTC) | |
144 | setenv("TZ", "UTC", 1); | |
145 | tzset(); | |
146 | ||
147 | /* read rtc and system clocks "at the same time", or as | |
148 | * precisely (+/- a second) as we can read them. | |
149 | */ | |
150 | if (ioctl(fd, RTC_RD_TIME, &rtc) < 0) { | |
07b336c9 | 151 | warn(_("read rtc time failed")); |
f8d87ab1 | 152 | return -1; |
76700389 BW |
153 | } |
154 | sys_time = time(0); | |
155 | if (sys_time == (time_t)-1) { | |
07b336c9 | 156 | warn(_("read system time failed")); |
f8d87ab1 | 157 | return -1; |
76700389 BW |
158 | } |
159 | ||
160 | /* convert rtc_time to normal arithmetic-friendly form, | |
161 | * updating tm.tm_wday as used by asctime(). | |
162 | */ | |
163 | memset(&tm, 0, sizeof tm); | |
164 | tm.tm_sec = rtc.tm_sec; | |
165 | tm.tm_min = rtc.tm_min; | |
166 | tm.tm_hour = rtc.tm_hour; | |
167 | tm.tm_mday = rtc.tm_mday; | |
168 | tm.tm_mon = rtc.tm_mon; | |
169 | tm.tm_year = rtc.tm_year; | |
1da17ec6 | 170 | tm.tm_isdst = -1; /* assume the system knows better than the RTC */ |
76700389 BW |
171 | rtc_time = mktime(&tm); |
172 | ||
173 | if (rtc_time == (time_t)-1) { | |
07b336c9 | 174 | warn(_("convert rtc time failed")); |
f8d87ab1 | 175 | return -1; |
76700389 BW |
176 | } |
177 | ||
178 | if (verbose) { | |
2148b051 DB |
179 | /* Unless the system uses UTC, either delta or tzone |
180 | * reflects a seconds offset from UTC. The value can | |
181 | * help sort out problems like bugs in your C library. | |
182 | */ | |
183 | printf("\tdelta = %ld\n", sys_time - rtc_time); | |
184 | printf("\ttzone = %ld\n", timezone); | |
185 | ||
186 | printf("\ttzname = %s\n", tzname[daylight]); | |
187 | gmtime_r(&rtc_time, &tm); | |
188 | printf("\tsystime = %ld, (UTC) %s", | |
76700389 | 189 | (long) sys_time, asctime(gmtime(&sys_time))); |
2148b051 | 190 | printf("\trtctime = %ld, (UTC) %s", |
76700389 BW |
191 | (long) rtc_time, asctime(&tm)); |
192 | } | |
193 | ||
f8d87ab1 | 194 | return 0; |
76700389 BW |
195 | } |
196 | ||
197 | static int setup_alarm(int fd, time_t *wakeup) | |
198 | { | |
199 | struct tm *tm; | |
200 | struct rtc_wkalrm wake; | |
201 | ||
1b7c164c DB |
202 | /* The wakeup time is in POSIX time (more or less UTC). |
203 | * Ideally RTCs use that same time; but PCs can't do that | |
204 | * if they need to boot MS-Windows. Messy... | |
205 | * | |
206 | * When clock_mode == CM_UTC this process's timezone is UTC, | |
207 | * so we'll pass a UTC date to the RTC. | |
208 | * | |
209 | * Else clock_mode == CM_LOCAL so the time given to the RTC | |
210 | * will instead use the local time zone. | |
211 | */ | |
212 | tm = localtime(wakeup); | |
76700389 BW |
213 | |
214 | wake.time.tm_sec = tm->tm_sec; | |
215 | wake.time.tm_min = tm->tm_min; | |
216 | wake.time.tm_hour = tm->tm_hour; | |
217 | wake.time.tm_mday = tm->tm_mday; | |
218 | wake.time.tm_mon = tm->tm_mon; | |
219 | wake.time.tm_year = tm->tm_year; | |
2148b051 DB |
220 | /* wday, yday, and isdst fields are unused by Linux */ |
221 | wake.time.tm_wday = -1; | |
222 | wake.time.tm_yday = -1; | |
223 | wake.time.tm_isdst = -1; | |
76700389 | 224 | |
fc181184 | 225 | wake.enabled = 1; |
569f3ca2 | 226 | |
fc181184 | 227 | /* First try the preferred RTC_WKALM_SET */ |
569f3ca2 | 228 | if (!dryrun && ioctl(fd, RTC_WKALM_SET, &wake) < 0) { |
fc181184 GB |
229 | wake.enabled = 0; |
230 | /* Fall back on the non-preferred way of setting wakeups; only | |
231 | * works for alarms < 24 hours from now */ | |
232 | if ((rtc_time + (24 * 60 * 60)) > *wakeup) { | |
233 | if (ioctl(fd, RTC_ALM_SET, &wake.time) < 0) { | |
07b336c9 | 234 | warn(_("set rtc alarm failed")); |
fc181184 GB |
235 | return -1; |
236 | } | |
237 | if (ioctl(fd, RTC_AIE_ON, 0) < 0) { | |
07b336c9 | 238 | warn(_("enable rtc alarm failed")); |
fc181184 GB |
239 | return -1; |
240 | } | |
241 | } else { | |
07b336c9 | 242 | warn(_("set rtc wake alarm failed")); |
fc181184 | 243 | return -1; |
76700389 BW |
244 | } |
245 | } | |
246 | ||
f8d87ab1 | 247 | return 0; |
76700389 BW |
248 | } |
249 | ||
e6d1dc94 LR |
250 | static int is_suspend_available(const char *suspend) |
251 | { | |
252 | int rc; | |
253 | char buf[32]; | |
254 | FILE *f = fopen(SYS_POWER_STATE_PATH, "r"); | |
255 | ||
256 | if (!f) | |
257 | return -1; | |
258 | ||
259 | if (fgets(buf, sizeof buf, f) == NULL) | |
260 | rc = -1; | |
261 | else | |
262 | rc = strstr(buf, suspend) != NULL; | |
263 | ||
264 | fclose(f); | |
265 | return rc; | |
266 | } | |
267 | ||
76700389 BW |
268 | static void suspend_system(const char *suspend) |
269 | { | |
d3cf5414 | 270 | FILE *f = fopen(SYS_POWER_STATE_PATH, "w"); |
76700389 BW |
271 | |
272 | if (!f) { | |
07b336c9 | 273 | warn(_("open failed: %s"), SYS_POWER_STATE_PATH); |
76700389 BW |
274 | return; |
275 | } | |
276 | ||
569f3ca2 KZ |
277 | if (!dryrun) { |
278 | fprintf(f, "%s\n", suspend); | |
279 | fflush(f); | |
280 | } | |
76700389 BW |
281 | |
282 | /* this executes after wake from suspend */ | |
283 | fclose(f); | |
284 | } | |
285 | ||
286 | ||
287 | static int read_clock_mode(void) | |
288 | { | |
289 | FILE *fp; | |
290 | char linebuf[MAX_LINE]; | |
291 | ||
292 | fp = fopen(ADJTIME_PATH, "r"); | |
293 | if (!fp) | |
f8d87ab1 | 294 | return -1; |
76700389 BW |
295 | |
296 | /* skip first line */ | |
297 | if (!fgets(linebuf, MAX_LINE, fp)) { | |
298 | fclose(fp); | |
f8d87ab1 | 299 | return -1; |
76700389 BW |
300 | } |
301 | ||
302 | /* skip second line */ | |
303 | if (!fgets(linebuf, MAX_LINE, fp)) { | |
304 | fclose(fp); | |
f8d87ab1 | 305 | return -1; |
76700389 BW |
306 | } |
307 | ||
308 | /* read third line */ | |
309 | if (!fgets(linebuf, MAX_LINE, fp)) { | |
310 | fclose(fp); | |
f8d87ab1 | 311 | return -1; |
76700389 BW |
312 | } |
313 | ||
314 | if (strncmp(linebuf, "UTC", 3) == 0) | |
315 | clock_mode = CM_UTC; | |
316 | else if (strncmp(linebuf, "LOCAL", 5) == 0) | |
317 | clock_mode = CM_LOCAL; | |
318 | ||
319 | fclose(fp); | |
320 | ||
f8d87ab1 | 321 | return 0; |
76700389 BW |
322 | } |
323 | ||
fcf67294 MO |
324 | /** |
325 | * print basic alarm settings | |
326 | */ | |
327 | static int print_alarm(int fd) | |
328 | { | |
329 | struct rtc_wkalrm wake; | |
330 | struct rtc_time rtc; | |
331 | struct tm tm; | |
332 | time_t alarm; | |
333 | ||
334 | /* First try the preferred RTC_WKALM_RD */ | |
335 | if (ioctl(fd, RTC_WKALM_RD, &wake) < 0) { | |
336 | /* Fall back on the non-preferred way of reading wakeups; only | |
337 | * works for alarms < 24 hours from now | |
338 | * | |
339 | * set wake.enabled to 1 and determine from value of the year-1 | |
340 | * means disabled | |
341 | */ | |
342 | wake.enabled = 1; | |
343 | if (ioctl(fd, RTC_ALM_READ, &wake.time) < 0) { | |
07b336c9 | 344 | warn(_("read rtc alarm failed")); |
fcf67294 MO |
345 | return -1; |
346 | } | |
347 | } | |
348 | ||
349 | if (wake.enabled != 1 || wake.time.tm_year == -1) { | |
350 | printf(_("alarm: off\n")); | |
351 | return 0; | |
352 | } | |
353 | ||
354 | rtc = wake.time; | |
355 | ||
356 | memset(&tm, 0, sizeof tm); | |
357 | tm.tm_sec = rtc.tm_sec; | |
358 | tm.tm_min = rtc.tm_min; | |
359 | tm.tm_hour = rtc.tm_hour; | |
360 | tm.tm_mday = rtc.tm_mday; | |
361 | tm.tm_mon = rtc.tm_mon; | |
362 | tm.tm_year = rtc.tm_year; | |
363 | tm.tm_isdst = -1; /* assume the system knows better than the RTC */ | |
364 | ||
365 | alarm = mktime(&tm); | |
366 | if (alarm == (time_t)-1) { | |
07b336c9 | 367 | warn(_("convert time failed")); |
fcf67294 MO |
368 | return -1; |
369 | } | |
370 | ||
371 | /* 0 if both UTC, or expresses diff if RTC in local time */ | |
372 | alarm += sys_time - rtc_time; | |
373 | ||
07b336c9 | 374 | printf(_("alarm: on %s"), ctime(&alarm)); |
fcf67294 MO |
375 | return 0; |
376 | } | |
377 | ||
76700389 BW |
378 | int main(int argc, char **argv) |
379 | { | |
380 | char *devname = DEFAULT_DEVICE; | |
381 | unsigned seconds = 0; | |
382 | char *suspend = DEFAULT_MODE; | |
383 | ||
77f5744c | 384 | int rc = EXIT_SUCCESS; |
76700389 BW |
385 | int t; |
386 | int fd; | |
387 | time_t alarm = 0; | |
388 | ||
389 | setlocale(LC_ALL, ""); | |
390 | bindtextdomain(PACKAGE, LOCALEDIR); | |
391 | textdomain(PACKAGE); | |
392 | ||
569f3ca2 | 393 | while ((t = getopt_long(argc, argv, "ahd:lm:ns:t:uVv", |
76700389 BW |
394 | long_options, NULL)) != EOF) { |
395 | switch (t) { | |
396 | case 'a': | |
397 | /* CM_AUTO is default */ | |
398 | break; | |
399 | ||
400 | case 'd': | |
c1196d3a | 401 | devname = optarg; |
76700389 BW |
402 | break; |
403 | ||
404 | case 'l': | |
405 | clock_mode = CM_LOCAL; | |
406 | break; | |
407 | ||
408 | /* what system power mode to use? for now handle only | |
409 | * standardized mode names; eventually when systems | |
410 | * define their own state names, parse | |
411 | * /sys/power/state. | |
412 | * | |
413 | * "on" is used just to test the RTC alarm mechanism, | |
414 | * bypassing all the wakeup-from-sleep infrastructure. | |
415 | */ | |
416 | case 'm': | |
417 | if (strcmp(optarg, "standby") == 0 | |
418 | || strcmp(optarg, "mem") == 0 | |
419 | || strcmp(optarg, "disk") == 0 | |
420 | || strcmp(optarg, "on") == 0 | |
e4b0fc36 | 421 | || strcmp(optarg, "no") == 0 |
77f5744c | 422 | || strcmp(optarg, "off") == 0 |
c15dd93b | 423 | || strcmp(optarg, "disable") == 0 |
fcf67294 | 424 | || strcmp(optarg, "show") == 0 |
76700389 | 425 | ) { |
c1196d3a | 426 | suspend = optarg; |
76700389 BW |
427 | break; |
428 | } | |
07b336c9 KZ |
429 | |
430 | errx(EXIT_FAILURE, _("unrecognized suspend state '%s'"), | |
431 | optarg); | |
432 | break; | |
76700389 | 433 | |
569f3ca2 KZ |
434 | case 'n': |
435 | dryrun = 1; | |
436 | break; | |
437 | ||
76700389 BW |
438 | /* alarm time, seconds-to-sleep (relative) */ |
439 | case 's': | |
07b336c9 KZ |
440 | seconds = strtol_or_err(optarg, |
441 | _("failed to parse seconds value")); | |
76700389 BW |
442 | break; |
443 | ||
444 | /* alarm time, time_t (absolute, seconds since | |
445 | * 1/1 1970 UTC) | |
446 | */ | |
447 | case 't': | |
07b336c9 KZ |
448 | alarm = strtol_or_err(optarg, |
449 | _("failed to parse time_t value")); | |
76700389 BW |
450 | break; |
451 | ||
452 | case 'u': | |
453 | clock_mode = CM_UTC; | |
454 | break; | |
455 | ||
456 | case 'v': | |
457 | verbose++; | |
458 | break; | |
459 | ||
460 | case 'V': | |
07b336c9 | 461 | printf("%s\n", VERSION_STRING); |
76700389 BW |
462 | exit(EXIT_SUCCESS); |
463 | ||
464 | case 'h': | |
07b336c9 | 465 | usage(stdout); |
76700389 | 466 | default: |
07b336c9 | 467 | usage(stderr); |
76700389 BW |
468 | } |
469 | } | |
470 | ||
471 | if (clock_mode == CM_AUTO) { | |
f8d87ab1 | 472 | if (read_clock_mode() < 0) { |
07b336c9 KZ |
473 | printf(_("%s: assuming RTC uses UTC ...\n"), |
474 | program_invocation_short_name); | |
76700389 BW |
475 | clock_mode = CM_UTC; |
476 | } | |
76700389 | 477 | } |
2148b051 DB |
478 | if (verbose) |
479 | printf(clock_mode == CM_UTC ? _("Using UTC time.\n") : | |
480 | _("Using local time.\n")); | |
76700389 | 481 | |
fcf67294 MO |
482 | if (!alarm && !seconds && strcmp(suspend,"disable") && |
483 | strcmp(suspend,"show")) { | |
484 | ||
07b336c9 KZ |
485 | warnx(_("must provide wake time (see -t and -s options)")); |
486 | usage(stderr); | |
76700389 BW |
487 | } |
488 | ||
489 | /* when devname doesn't start with /dev, append it */ | |
490 | if (strncmp(devname, "/dev/", strlen("/dev/")) != 0) { | |
491 | char *new_devname; | |
492 | ||
2ab428f6 | 493 | new_devname = xmalloc(strlen(devname) + strlen("/dev/") + 1); |
76700389 BW |
494 | |
495 | strcpy(new_devname, "/dev/"); | |
496 | strcat(new_devname, devname); | |
497 | free(devname); | |
498 | devname = new_devname; | |
499 | } | |
500 | ||
e4b0fc36 | 501 | if (strcmp(suspend, "on") != 0 && strcmp(suspend, "no") != 0 |
07b336c9 KZ |
502 | && !is_wakeup_enabled(devname)) |
503 | errx(EXIT_FAILURE, _("%s not enabled for wakeup events"), devname); | |
76700389 BW |
504 | |
505 | /* this RTC must exist and (if we'll sleep) be wakeup-enabled */ | |
77f5744c KZ |
506 | #ifdef O_CLOEXEC |
507 | fd = open(devname, O_RDONLY | O_CLOEXEC); | |
508 | #else | |
76700389 | 509 | fd = open(devname, O_RDONLY); |
77f5744c | 510 | #endif |
07b336c9 KZ |
511 | if (fd < 0) |
512 | err(EXIT_FAILURE, _("open failed: %s"), devname); | |
76700389 BW |
513 | |
514 | /* relative or absolute alarm time, normalized to time_t */ | |
f8d87ab1 | 515 | if (get_basetimes(fd) < 0) |
76700389 BW |
516 | exit(EXIT_FAILURE); |
517 | if (verbose) | |
518 | printf(_("alarm %ld, sys_time %ld, rtc_time %ld, seconds %u\n"), | |
519 | alarm, sys_time, rtc_time, seconds); | |
77f5744c | 520 | |
fcf67294 | 521 | if (strcmp(suspend, "show") && strcmp(suspend, "disable")) { |
e6d1dc94 LR |
522 | if (strcmp(suspend, "no") && strcmp(suspend, "on") && |
523 | strcmp(suspend, "off") && is_suspend_available(suspend) <= 0) { | |
524 | errx(EXIT_FAILURE, _("suspend to \"%s\" unavailable"), suspend); | |
525 | } | |
526 | ||
fcf67294 MO |
527 | /* care about alarm setup only if the show|disable |
528 | * modes are not set | |
529 | */ | |
530 | if (alarm) { | |
07b336c9 KZ |
531 | if (alarm < sys_time) |
532 | errx(EXIT_FAILURE, _("time doesn't go backward to %s"), | |
533 | ctime(&alarm)); | |
fcf67294 MO |
534 | alarm += sys_time - rtc_time; |
535 | } else | |
536 | alarm = rtc_time + seconds + 1; | |
537 | ||
538 | if (setup_alarm(fd, &alarm) < 0) | |
539 | exit(EXIT_FAILURE); | |
76700389 | 540 | |
07b336c9 KZ |
541 | if (strcmp(suspend, "no") == 0 || strcmp(suspend, "on") == 0) |
542 | printf(_("%s: wakeup using %s at %s"), | |
543 | program_invocation_short_name, devname, | |
544 | ctime(&alarm)); | |
545 | else | |
546 | printf(_("%s: wakeup from \"%s\" using %s at %s"), | |
547 | program_invocation_short_name, suspend, devname, | |
fcf67294 MO |
548 | ctime(&alarm)); |
549 | fflush(stdout); | |
550 | usleep(10 * 1000); | |
551 | } | |
76700389 | 552 | |
ecd55f96 KZ |
553 | if (strcmp(suspend, "no") == 0) { |
554 | if (verbose) | |
555 | printf(_("suspend mode: no; leaving\n")); | |
07b336c9 | 556 | dryrun = 1; /* to skip disabling alarm at the end */ |
ecd55f96 | 557 | |
77f5744c KZ |
558 | } else if (strcmp(suspend, "off") == 0) { |
559 | char *arg[4]; | |
560 | int i = 0; | |
561 | ||
ecd55f96 KZ |
562 | if (verbose) |
563 | printf(_("suspend mode: off; executing %s\n"), | |
564 | _PATH_SHUTDOWN); | |
77f5744c KZ |
565 | arg[i++] = _PATH_SHUTDOWN; |
566 | arg[i++] = "-P"; | |
567 | arg[i++] = "now"; | |
568 | arg[i] = NULL; | |
569 | ||
569f3ca2 KZ |
570 | if (!dryrun) { |
571 | execv(arg[0], arg); | |
77f5744c | 572 | |
07b336c9 | 573 | warn(_("unable to execute %s"), _PATH_SHUTDOWN); |
569f3ca2 KZ |
574 | rc = EXIT_FAILURE; |
575 | } | |
ecd55f96 KZ |
576 | |
577 | } else if (strcmp(suspend, "on") == 0) { | |
76700389 BW |
578 | unsigned long data; |
579 | ||
ecd55f96 KZ |
580 | if (verbose) |
581 | printf(_("suspend mode: on; reading rtc\n")); | |
582 | ||
569f3ca2 KZ |
583 | if (!dryrun) { |
584 | do { | |
585 | t = read(fd, &data, sizeof data); | |
586 | if (t < 0) { | |
07b336c9 | 587 | warn(_("rtc read failed")); |
569f3ca2 KZ |
588 | break; |
589 | } | |
590 | if (verbose) | |
591 | printf("... %s: %03lx\n", devname, data); | |
592 | } while (!(data & RTC_AF)); | |
593 | } | |
ecd55f96 | 594 | |
c15dd93b MO |
595 | } else if (strcmp(suspend, "disable") == 0) { |
596 | /* just break, alarm gets disabled in the end */ | |
597 | if (verbose) | |
598 | printf(_("suspend mode: disable; disabling alarm\n")); | |
fcf67294 MO |
599 | |
600 | } else if(strcmp(suspend,"show") == 0) { | |
601 | if (verbose) | |
602 | printf(_("suspend mode: show; printing alarm info\n")); | |
603 | if (print_alarm(fd)) | |
604 | rc = EXIT_FAILURE; | |
605 | dryrun = 1; /* don't really disable alarm in the end, just show */ | |
606 | ||
ecd55f96 KZ |
607 | } else { |
608 | if (verbose) | |
609 | printf(_("suspend mode: %s; suspending system\n"), suspend); | |
610 | sync(); | |
611 | suspend_system(suspend); | |
76700389 BW |
612 | } |
613 | ||
569f3ca2 | 614 | if (!dryrun && ioctl(fd, RTC_AIE_OFF, 0) < 0) |
07b336c9 | 615 | warn(_("disable rtc alarm interrupt failed")); |
76700389 BW |
616 | |
617 | close(fd); | |
77f5744c | 618 | return rc; |
76700389 | 619 | } |