| File: | kern/tty_endrun.c |
| Warning: | line 343, column 10 Although the value stored to 'tfom' is used in the enclosing expression, the value is never actually read from 'tfom' |
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| 1 | /* $OpenBSD: tty_endrun.c,v 1.8 2018/02/19 08:59:52 mpi Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2008 Marc Balmer <mbalmer@openbsd.org> |
| 5 | * Copyright (c) 2009 Kevin Steves <stevesk@openbsd.org> |
| 6 | * |
| 7 | * Permission to use, copy, modify, and distribute this software for any |
| 8 | * purpose with or without fee is hereby granted, provided that the above |
| 9 | * copyright notice and this permission notice appear in all copies. |
| 10 | * |
| 11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 15 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 16 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 17 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * A tty line discipline to decode the EndRun Technologies native |
| 22 | * time-of-day message. |
| 23 | * http://www.endruntechnologies.com/ |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * EndRun Format: |
| 28 | * |
| 29 | * T YYYY DDD HH:MM:SS zZZ m<CR><LF> |
| 30 | * |
| 31 | * T is the Time Figure of Merit (TFOM) character (described below). |
| 32 | * This is the on-time character, transmitted during the first |
| 33 | * millisecond of each second. |
| 34 | * |
| 35 | * YYYY is the year |
| 36 | * DDD is the day-of-year |
| 37 | * : is the colon character (0x3A) |
| 38 | * HH is the hour of the day |
| 39 | * MM is the minute of the hour |
| 40 | * SS is the second of the minute |
| 41 | * z is the sign of the offset to UTC, + implies time is ahead of UTC. |
| 42 | * ZZ is the magnitude of the offset to UTC in units of half-hours. |
| 43 | * Non-zero only when the Timemode is Local. |
| 44 | * m is the Timemode character and is one of: |
| 45 | * G = GPS |
| 46 | * L = Local |
| 47 | * U = UTC |
| 48 | * <CR> is the ASCII carriage return character (0x0D) |
| 49 | * <LF> is the ASCII line feed character (0x0A) |
| 50 | */ |
| 51 | |
| 52 | #include <sys/param.h> |
| 53 | #include <sys/systm.h> |
| 54 | #include <sys/malloc.h> |
| 55 | #include <sys/sensors.h> |
| 56 | #include <sys/tty.h> |
| 57 | #include <sys/conf.h> |
| 58 | #include <sys/time.h> |
| 59 | |
| 60 | #ifdef ENDRUN_DEBUG |
| 61 | #define DPRINTFN(n, x) do { if (endrundebug > (n)) printf x; } while (0) |
| 62 | int endrundebug = 0; |
| 63 | #else |
| 64 | #define DPRINTFN(n, x) |
| 65 | #endif |
| 66 | #define DPRINTF(x) DPRINTFN(0, x) |
| 67 | |
| 68 | void endrunattach(int); |
| 69 | |
| 70 | #define ENDRUNLEN27 27 /* strlen("6 2009 018 20:41:17 +00 U\r\n") */ |
| 71 | #define NUMFLDS6 6 |
| 72 | #ifdef ENDRUN_DEBUG |
| 73 | #define TRUSTTIME(10 * 60) 30 |
| 74 | #else |
| 75 | #define TRUSTTIME(10 * 60) (10 * 60) /* 10 minutes */ |
| 76 | #endif |
| 77 | |
| 78 | int endrun_count, endrun_nxid; |
| 79 | |
| 80 | struct endrun { |
| 81 | char cbuf[ENDRUNLEN27]; /* receive buffer */ |
| 82 | struct ksensor time; /* the timedelta sensor */ |
| 83 | struct ksensor signal; /* signal status */ |
| 84 | struct ksensordev timedev; |
| 85 | struct timespec ts; /* current timestamp */ |
| 86 | struct timespec lts; /* timestamp of last TFOM */ |
| 87 | struct timeout endrun_tout; /* invalidate sensor */ |
| 88 | int64_t gap; /* gap between two sentences */ |
| 89 | int64_t last; /* last time rcvd */ |
| 90 | #define SYNC_SCAN1 1 /* scanning for '\n' */ |
| 91 | #define SYNC_EOL2 2 /* '\n' seen, next char TFOM */ |
| 92 | int sync; |
| 93 | int pos; /* position in rcv buffer */ |
| 94 | int no_pps; /* no PPS although requested */ |
| 95 | #ifdef ENDRUN_DEBUG |
| 96 | char tfom; |
| 97 | #endif |
| 98 | }; |
| 99 | |
| 100 | /* EndRun decoding */ |
| 101 | void endrun_scan(struct endrun *, struct tty *); |
| 102 | void endrun_decode(struct endrun *, struct tty *, char *fld[], int fldcnt); |
| 103 | |
| 104 | /* date and time conversion */ |
| 105 | int endrun_atoi(char *s, int len); |
| 106 | int endrun_date_to_nano(char *s1, char *s2, int64_t *nano); |
| 107 | int endrun_time_to_nano(char *s, int64_t *nano); |
| 108 | int endrun_offset_to_nano(char *s, int64_t *nano); |
| 109 | |
| 110 | /* degrade the timedelta sensor */ |
| 111 | void endrun_timeout(void *); |
| 112 | |
| 113 | void |
| 114 | endrunattach(int dummy) |
| 115 | { |
| 116 | } |
| 117 | |
| 118 | int |
| 119 | endrunopen(dev_t dev, struct tty *tp, struct proc *p) |
| 120 | { |
| 121 | struct endrun *np; |
| 122 | int error; |
| 123 | |
| 124 | DPRINTF(("endrunopen\n")); |
| 125 | if (tp->t_line == ENDRUNDISC9) |
| 126 | return ENODEV19; |
| 127 | if ((error = suser(p)) != 0) |
| 128 | return error; |
| 129 | np = malloc(sizeof(struct endrun), M_DEVBUF2, M_WAITOK0x0001|M_ZERO0x0008); |
| 130 | snprintf(np->timedev.xname, sizeof(np->timedev.xname), "endrun%d", |
| 131 | endrun_nxid++); |
| 132 | endrun_count++; |
| 133 | np->time.status = SENSOR_S_UNKNOWN; |
| 134 | np->time.type = SENSOR_TIMEDELTA; |
| 135 | #ifndef ENDRUN_DEBUG |
| 136 | np->time.flags = SENSOR_FINVALID0x0001; |
| 137 | #endif |
| 138 | sensor_attach(&np->timedev, &np->time); |
| 139 | |
| 140 | np->signal.type = SENSOR_PERCENT; |
| 141 | np->signal.status = SENSOR_S_UNKNOWN; |
| 142 | np->signal.value = 100000LL; |
| 143 | strlcpy(np->signal.desc, "Signal", sizeof(np->signal.desc)); |
| 144 | sensor_attach(&np->timedev, &np->signal); |
| 145 | |
| 146 | np->sync = SYNC_SCAN1; |
| 147 | #ifdef ENDRUN_DEBUG |
| 148 | np->tfom = '0'; |
| 149 | #endif |
| 150 | tp->t_sc = (caddr_t)np; |
| 151 | |
| 152 | error = linesw[TTYDISC0].l_open(dev, tp, p); |
| 153 | if (error) { |
| 154 | free(np, M_DEVBUF2, sizeof(*np)); |
| 155 | tp->t_sc = NULL((void *)0); |
| 156 | } else { |
| 157 | sensordev_install(&np->timedev); |
| 158 | timeout_set(&np->endrun_tout, endrun_timeout, np); |
| 159 | } |
| 160 | |
| 161 | return error; |
| 162 | } |
| 163 | |
| 164 | int |
| 165 | endrunclose(struct tty *tp, int flags, struct proc *p) |
| 166 | { |
| 167 | struct endrun *np = (struct endrun *)tp->t_sc; |
| 168 | |
| 169 | DPRINTF(("endrunclose\n")); |
| 170 | tp->t_line = TTYDISC0; /* switch back to termios */ |
| 171 | timeout_del(&np->endrun_tout); |
| 172 | sensordev_deinstall(&np->timedev); |
| 173 | free(np, M_DEVBUF2, sizeof(*np)); |
| 174 | tp->t_sc = NULL((void *)0); |
| 175 | endrun_count--; |
| 176 | if (endrun_count == 0) |
| 177 | endrun_nxid = 0; |
| 178 | return linesw[TTYDISC0].l_close(tp, flags, p); |
| 179 | } |
| 180 | |
| 181 | /* collect EndRun sentence from tty */ |
| 182 | int |
| 183 | endruninput(int c, struct tty *tp) |
| 184 | { |
| 185 | struct endrun *np = (struct endrun *)tp->t_sc; |
| 186 | struct timespec ts; |
| 187 | int64_t gap; |
| 188 | long tmin, tmax; |
| 189 | |
| 190 | if (np->sync == SYNC_EOL2) { |
| 191 | nanotime(&ts); |
| 192 | np->pos = 0; |
| 193 | np->sync = SYNC_SCAN1; |
| 194 | np->cbuf[np->pos++] = c; /* TFOM char */ |
| 195 | |
| 196 | gap = (ts.tv_sec * 1000000000LL + ts.tv_nsec) - |
| 197 | (np->lts.tv_sec * 1000000000LL + np->lts.tv_nsec); |
| 198 | |
| 199 | np->lts.tv_sec = ts.tv_sec; |
| 200 | np->lts.tv_nsec = ts.tv_nsec; |
| 201 | |
| 202 | if (gap <= np->gap) |
| 203 | goto nogap; |
| 204 | |
| 205 | np->ts.tv_sec = ts.tv_sec; |
| 206 | np->ts.tv_nsec = ts.tv_nsec; |
| 207 | np->gap = gap; |
| 208 | |
| 209 | /* |
| 210 | * If a tty timestamp is available, make sure its value is |
| 211 | * reasonable by comparing against the timestamp just taken. |
| 212 | * If they differ by more than 2 seconds, assume no PPS signal |
| 213 | * is present, note the fact, and keep using the timestamp |
| 214 | * value. When this happens, the sensor state is set to |
| 215 | * CRITICAL later when the EndRun sentence is decoded. |
| 216 | */ |
| 217 | if (tp->t_flags & (TS_TSTAMPDCDSET0x10000 | TS_TSTAMPDCDCLR0x20000 | |
| 218 | TS_TSTAMPCTSSET0x40000 | TS_TSTAMPCTSCLR0x80000)) { |
| 219 | tmax = lmax(np->ts.tv_sec, tp->t_tv.tv_sec); |
| 220 | tmin = lmin(np->ts.tv_sec, tp->t_tv.tv_sec); |
| 221 | if (tmax - tmin > 1) |
| 222 | np->no_pps = 1; |
| 223 | else { |
| 224 | np->ts.tv_sec = tp->t_tv.tv_sec; |
| 225 | np->ts.tv_nsec = tp->t_tv.tv_usec * |
| 226 | 1000L; |
| 227 | np->no_pps = 0; |
| 228 | } |
| 229 | } |
| 230 | } else if (c == '\n') { |
| 231 | if (np->pos == ENDRUNLEN27 - 1) { |
| 232 | /* don't copy '\n' into cbuf */ |
| 233 | np->cbuf[np->pos] = '\0'; |
| 234 | endrun_scan(np, tp); |
| 235 | } |
| 236 | np->sync = SYNC_EOL2; |
| 237 | } else { |
| 238 | if (np->pos < ENDRUNLEN27 - 1) |
| 239 | np->cbuf[np->pos++] = c; |
| 240 | } |
| 241 | |
| 242 | nogap: |
| 243 | /* pass data to termios */ |
| 244 | return linesw[TTYDISC0].l_rint(c, tp); |
| 245 | } |
| 246 | |
| 247 | /* Scan the EndRun sentence just received */ |
| 248 | void |
| 249 | endrun_scan(struct endrun *np, struct tty *tp) |
| 250 | { |
| 251 | int fldcnt = 0, n; |
| 252 | char *fld[NUMFLDS6], *cs; |
| 253 | |
| 254 | DPRINTFN(1, ("%s\n", np->cbuf)); |
| 255 | /* split into fields */ |
| 256 | fld[fldcnt++] = &np->cbuf[0]; |
| 257 | for (cs = NULL((void *)0), n = 0; n < np->pos && cs == NULL((void *)0); n++) { |
| 258 | switch (np->cbuf[n]) { |
| 259 | case '\r': |
| 260 | np->cbuf[n] = '\0'; |
| 261 | cs = &np->cbuf[n + 1]; |
| 262 | break; |
| 263 | case ' ': |
| 264 | if (fldcnt < NUMFLDS6) { |
| 265 | np->cbuf[n] = '\0'; |
| 266 | fld[fldcnt++] = &np->cbuf[n + 1]; |
| 267 | } else { |
| 268 | DPRINTF(("endrun: nr of fields in sentence " |
| 269 | "exceeds expected: %d\n", NUMFLDS)); |
| 270 | return; |
| 271 | } |
| 272 | break; |
| 273 | } |
| 274 | } |
| 275 | endrun_decode(np, tp, fld, fldcnt); |
| 276 | } |
| 277 | |
| 278 | /* Decode the time string */ |
| 279 | void |
| 280 | endrun_decode(struct endrun *np, struct tty *tp, char *fld[], int fldcnt) |
| 281 | { |
| 282 | int64_t date_nano, time_nano, offset_nano, endrun_now; |
| 283 | char tfom; |
| 284 | int jumped = 0; |
| 285 | |
| 286 | if (fldcnt != NUMFLDS6) { |
| 287 | DPRINTF(("endrun: field count mismatch, %d\n", fldcnt)); |
| 288 | return; |
| 289 | } |
| 290 | if (endrun_time_to_nano(fld[3], &time_nano) == -1) { |
| 291 | DPRINTF(("endrun: illegal time, %s\n", fld[3])); |
| 292 | return; |
| 293 | } |
| 294 | if (endrun_date_to_nano(fld[1], fld[2], &date_nano) == -1) { |
| 295 | DPRINTF(("endrun: illegal date, %s %s\n", fld[1], fld[2])); |
| 296 | return; |
| 297 | } |
| 298 | offset_nano = 0; |
| 299 | /* only parse offset when timemode is local */ |
| 300 | if (fld[5][0] == 'L' && |
| 301 | endrun_offset_to_nano(fld[4], &offset_nano) == -1) { |
| 302 | DPRINTF(("endrun: illegal offset, %s\n", fld[4])); |
| 303 | return; |
| 304 | } |
| 305 | |
| 306 | endrun_now = date_nano + time_nano + offset_nano; |
| 307 | if (endrun_now <= np->last) { |
| 308 | DPRINTF(("endrun: time not monotonically increasing " |
| 309 | "last %lld now %lld\n", |
| 310 | (long long)np->last, (long long)endrun_now)); |
| 311 | jumped = 1; |
| 312 | } |
| 313 | np->last = endrun_now; |
| 314 | np->gap = 0LL; |
| 315 | #ifdef ENDRUN_DEBUG |
| 316 | if (np->time.status == SENSOR_S_UNKNOWN) { |
| 317 | np->time.status = SENSOR_S_OK; |
| 318 | timeout_add_sec(&np->endrun_tout, TRUSTTIME(10 * 60)); |
| 319 | } |
| 320 | #endif |
| 321 | |
| 322 | np->time.value = np->ts.tv_sec * 1000000000LL + |
| 323 | np->ts.tv_nsec - endrun_now; |
| 324 | np->time.tv.tv_sec = np->ts.tv_sec; |
| 325 | np->time.tv.tv_usec = np->ts.tv_nsec / 1000L; |
| 326 | if (np->time.status == SENSOR_S_UNKNOWN) { |
| 327 | np->time.status = SENSOR_S_OK; |
| 328 | np->time.flags &= ~SENSOR_FINVALID0x0001; |
| 329 | strlcpy(np->time.desc, "EndRun", sizeof(np->time.desc)); |
| 330 | } |
| 331 | /* |
| 332 | * Only update the timeout if the clock reports the time as valid. |
| 333 | * |
| 334 | * Time Figure Of Merit (TFOM) values: |
| 335 | * |
| 336 | * 6 - time error is < 100 us |
| 337 | * 7 - time error is < 1 ms |
| 338 | * 8 - time error is < 10 ms |
| 339 | * 9 - time error is > 10 ms, |
| 340 | * unsynchronized state if never locked to CDMA |
| 341 | */ |
| 342 | |
| 343 | switch (tfom = fld[0][0]) { |
Although the value stored to 'tfom' is used in the enclosing expression, the value is never actually read from 'tfom' | |
| 344 | case '6': |
| 345 | case '7': |
| 346 | case '8': |
| 347 | np->time.status = SENSOR_S_OK; |
| 348 | np->signal.status = SENSOR_S_OK; |
| 349 | break; |
| 350 | case '9': |
| 351 | np->signal.status = SENSOR_S_WARN; |
| 352 | break; |
| 353 | default: |
| 354 | DPRINTF(("endrun: invalid TFOM: '%c'\n", tfom)); |
| 355 | np->signal.status = SENSOR_S_CRIT; |
| 356 | break; |
| 357 | } |
| 358 | |
| 359 | #ifdef ENDRUN_DEBUG |
| 360 | if (np->tfom != tfom) { |
| 361 | DPRINTF(("endrun: TFOM changed from %c to %c\n", |
| 362 | np->tfom, tfom)); |
| 363 | np->tfom = tfom; |
| 364 | } |
| 365 | #endif |
| 366 | if (jumped) |
| 367 | np->time.status = SENSOR_S_WARN; |
| 368 | if (np->time.status == SENSOR_S_OK) |
| 369 | timeout_add_sec(&np->endrun_tout, TRUSTTIME(10 * 60)); |
| 370 | |
| 371 | /* |
| 372 | * If tty timestamping is requested, but no PPS signal is present, set |
| 373 | * the sensor state to CRITICAL. |
| 374 | */ |
| 375 | if (np->no_pps) |
| 376 | np->time.status = SENSOR_S_CRIT; |
| 377 | } |
| 378 | |
| 379 | int |
| 380 | endrun_atoi(char *s, int len) |
| 381 | { |
| 382 | int n; |
| 383 | char *p; |
| 384 | |
| 385 | /* make sure the input contains only numbers */ |
| 386 | for (n = 0, p = s; n < len && *p && *p >= '0' && *p <= '9'; n++, p++) |
| 387 | ; |
| 388 | if (n != len || *p != '\0') |
| 389 | return -1; |
| 390 | |
| 391 | for (n = 0; *s; s++) |
| 392 | n = n * 10 + *s - '0'; |
| 393 | |
| 394 | return n; |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * Convert date fields from EndRun to nanoseconds since the epoch. |
| 399 | * The year string must be of the form YYYY . |
| 400 | * The day of year string must be of the form DDD . |
| 401 | * Return 0 on success, -1 if illegal characters are encountered. |
| 402 | */ |
| 403 | int |
| 404 | endrun_date_to_nano(char *y, char *doy, int64_t *nano) |
| 405 | { |
| 406 | struct clock_ymdhms clock; |
| 407 | time_t secs; |
| 408 | int n, i; |
| 409 | int year_days = 365; |
| 410 | int month_days[] = { |
| 411 | 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 |
| 412 | }; |
| 413 | |
| 414 | #define FEBRUARY2 2 |
| 415 | |
| 416 | #define LEAPYEAR(x)((x) % 4 == 0 && (x) % 100 != 0) || (x) % 400 == 0 \ |
| 417 | ((x) % 4 == 0 && \ |
| 418 | (x) % 100 != 0) || \ |
| 419 | (x) % 400 == 0 |
| 420 | |
| 421 | if ((n = endrun_atoi(y, 4)) == -1) |
| 422 | return -1; |
| 423 | clock.dt_year = n; |
| 424 | |
| 425 | if (LEAPYEAR(n)((n) % 4 == 0 && (n) % 100 != 0) || (n) % 400 == 0) { |
| 426 | month_days[FEBRUARY2]++; |
| 427 | year_days++; |
| 428 | } |
| 429 | |
| 430 | if ((n = endrun_atoi(doy, 3)) == -1 || n == 0 || n > year_days) |
| 431 | return -1; |
| 432 | |
| 433 | /* convert day of year to month, day */ |
| 434 | for (i = 1; n > month_days[i]; i++) { |
| 435 | n -= month_days[i]; |
| 436 | } |
| 437 | clock.dt_mon = i; |
| 438 | clock.dt_day = n; |
| 439 | |
| 440 | DPRINTFN(1, ("mm/dd %d/%d\n", i, n)); |
| 441 | |
| 442 | clock.dt_hour = clock.dt_min = clock.dt_sec = 0; |
| 443 | |
| 444 | secs = clock_ymdhms_to_secs(&clock); |
| 445 | *nano = secs * 1000000000LL; |
| 446 | return 0; |
| 447 | } |
| 448 | |
| 449 | /* |
| 450 | * Convert time field from EndRun to nanoseconds since midnight. |
| 451 | * The string must be of the form HH:MM:SS . |
| 452 | * Return 0 on success, -1 if illegal characters are encountered. |
| 453 | */ |
| 454 | int |
| 455 | endrun_time_to_nano(char *s, int64_t *nano) |
| 456 | { |
| 457 | struct clock_ymdhms clock; |
| 458 | time_t secs; |
| 459 | int n; |
| 460 | |
| 461 | if (s[2] != ':' || s[5] != ':') |
| 462 | return -1; |
| 463 | |
| 464 | s[2] = '\0'; |
| 465 | s[5] = '\0'; |
| 466 | |
| 467 | if ((n = endrun_atoi(&s[0], 2)) == -1 || n > 23) |
| 468 | return -1; |
| 469 | clock.dt_hour = n; |
| 470 | if ((n = endrun_atoi(&s[3], 2)) == -1 || n > 59) |
| 471 | return -1; |
| 472 | clock.dt_min = n; |
| 473 | if ((n = endrun_atoi(&s[6], 2)) == -1 || n > 60) |
| 474 | return -1; |
| 475 | clock.dt_sec = n; |
| 476 | |
| 477 | DPRINTFN(1, ("hh:mm:ss %d:%d:%d\n", (int)clock.dt_hour, |
| 478 | (int)clock.dt_min, |
| 479 | (int)clock.dt_sec)); |
| 480 | secs = clock.dt_hour * 3600 |
| 481 | + clock.dt_min * 60 |
| 482 | + clock.dt_sec; |
| 483 | |
| 484 | DPRINTFN(1, ("secs %lu\n", (unsigned long)secs)); |
| 485 | |
| 486 | *nano = secs * 1000000000LL; |
| 487 | return 0; |
| 488 | } |
| 489 | |
| 490 | int |
| 491 | endrun_offset_to_nano(char *s, int64_t *nano) |
| 492 | { |
| 493 | time_t secs; |
| 494 | int n; |
| 495 | |
| 496 | if (!(s[0] == '+' || s[0] == '-')) |
| 497 | return -1; |
| 498 | |
| 499 | if ((n = endrun_atoi(&s[1], 2)) == -1) |
| 500 | return -1; |
| 501 | secs = n * 30 * 60; |
| 502 | |
| 503 | *nano = secs * 1000000000LL; |
| 504 | if (s[0] == '+') |
| 505 | *nano = -*nano; |
| 506 | |
| 507 | DPRINTFN(1, ("offset secs %lu nanosecs %lld\n", |
| 508 | (unsigned long)secs, (long long)*nano)); |
| 509 | |
| 510 | return 0; |
| 511 | } |
| 512 | |
| 513 | /* |
| 514 | * Degrade the sensor state if we received no EndRun string for more than |
| 515 | * TRUSTTIME seconds. |
| 516 | */ |
| 517 | void |
| 518 | endrun_timeout(void *xnp) |
| 519 | { |
| 520 | struct endrun *np = xnp; |
| 521 | |
| 522 | if (np->time.status == SENSOR_S_OK) { |
| 523 | np->time.status = SENSOR_S_WARN; |
| 524 | /* |
| 525 | * further degrade in TRUSTTIME seconds if no new valid EndRun |
| 526 | * strings are received. |
| 527 | */ |
| 528 | timeout_add_sec(&np->endrun_tout, TRUSTTIME(10 * 60)); |
| 529 | } else |
| 530 | np->time.status = SENSOR_S_CRIT; |
| 531 | } |