Contents of /tags/mkinitrd-6_1_12/busybox/runit/runsv.c
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Tue Nov 17 21:24:51 2009 UTC (14 years, 10 months ago) by niro
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Tue Nov 17 21:24:51 2009 UTC (14 years, 10 months ago) by niro
File MIME type: text/plain
File size: 15551 byte(s)
tagged 'mkinitrd-6_1_12'
1 | /* |
2 | Copyright (c) 2001-2006, Gerrit Pape |
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 are met: |
7 | |
8 | 1. Redistributions of source code must retain the above copyright notice, |
9 | 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 | 3. The name of the author may not be used to endorse or promote products |
14 | derived from this software without specific prior written permission. |
15 | |
16 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
18 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
20 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
22 | OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
23 | WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
24 | OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
25 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | /* Busyboxed by Denys Vlasenko <vda.linux@googlemail.com> */ |
29 | /* TODO: depends on runit_lib.c - review and reduce/eliminate */ |
30 | |
31 | #include <sys/poll.h> |
32 | #include <sys/file.h> |
33 | #include "libbb.h" |
34 | #include "runit_lib.h" |
35 | |
36 | #if ENABLE_MONOTONIC_SYSCALL |
37 | #include <sys/syscall.h> |
38 | |
39 | /* libc has incredibly messy way of doing this, |
40 | * typically requiring -lrt. We just skip all this mess */ |
41 | static void gettimeofday_ns(struct timespec *ts) |
42 | { |
43 | syscall(__NR_clock_gettime, CLOCK_REALTIME, ts); |
44 | } |
45 | #else |
46 | static void gettimeofday_ns(struct timespec *ts) |
47 | { |
48 | if (sizeof(struct timeval) == sizeof(struct timespec) |
49 | && sizeof(((struct timeval*)ts)->tv_usec) == sizeof(ts->tv_nsec) |
50 | ) { |
51 | /* Cheat */ |
52 | gettimeofday((void*)ts, NULL); |
53 | ts->tv_nsec *= 1000; |
54 | } else { |
55 | extern void BUG_need_to_implement_gettimeofday_ns(void); |
56 | BUG_need_to_implement_gettimeofday_ns(); |
57 | } |
58 | } |
59 | #endif |
60 | |
61 | /* Compare possibly overflowing unsigned counters */ |
62 | #define LESS(a,b) ((int)((unsigned)(b) - (unsigned)(a)) > 0) |
63 | |
64 | /* state */ |
65 | #define S_DOWN 0 |
66 | #define S_RUN 1 |
67 | #define S_FINISH 2 |
68 | /* ctrl */ |
69 | #define C_NOOP 0 |
70 | #define C_TERM 1 |
71 | #define C_PAUSE 2 |
72 | /* want */ |
73 | #define W_UP 0 |
74 | #define W_DOWN 1 |
75 | #define W_EXIT 2 |
76 | |
77 | struct svdir { |
78 | int pid; |
79 | smallint state; |
80 | smallint ctrl; |
81 | smallint want; |
82 | smallint islog; |
83 | struct timespec start; |
84 | int fdlock; |
85 | int fdcontrol; |
86 | int fdcontrolwrite; |
87 | }; |
88 | |
89 | struct globals { |
90 | smallint haslog; |
91 | smallint sigterm; |
92 | smallint pidchanged; |
93 | struct fd_pair selfpipe; |
94 | struct fd_pair logpipe; |
95 | char *dir; |
96 | struct svdir svd[2]; |
97 | }; |
98 | #define G (*(struct globals*)&bb_common_bufsiz1) |
99 | #define haslog (G.haslog ) |
100 | #define sigterm (G.sigterm ) |
101 | #define pidchanged (G.pidchanged ) |
102 | #define selfpipe (G.selfpipe ) |
103 | #define logpipe (G.logpipe ) |
104 | #define dir (G.dir ) |
105 | #define svd (G.svd ) |
106 | #define INIT_G() do { \ |
107 | pidchanged = 1; \ |
108 | } while (0) |
109 | |
110 | static void fatal2_cannot(const char *m1, const char *m2) |
111 | { |
112 | bb_perror_msg_and_die("%s: fatal: cannot %s%s", dir, m1, m2); |
113 | /* was exiting 111 */ |
114 | } |
115 | static void fatal_cannot(const char *m) |
116 | { |
117 | fatal2_cannot(m, ""); |
118 | /* was exiting 111 */ |
119 | } |
120 | static void fatal2x_cannot(const char *m1, const char *m2) |
121 | { |
122 | bb_error_msg_and_die("%s: fatal: cannot %s%s", dir, m1, m2); |
123 | /* was exiting 111 */ |
124 | } |
125 | static void warn_cannot(const char *m) |
126 | { |
127 | bb_perror_msg("%s: warning: cannot %s", dir, m); |
128 | } |
129 | |
130 | static void s_child(int sig_no UNUSED_PARAM) |
131 | { |
132 | write(selfpipe.wr, "", 1); |
133 | } |
134 | |
135 | static void s_term(int sig_no UNUSED_PARAM) |
136 | { |
137 | sigterm = 1; |
138 | write(selfpipe.wr, "", 1); /* XXX */ |
139 | } |
140 | |
141 | static char *add_str(char *p, const char *to_add) |
142 | { |
143 | while ((*p = *to_add) != '\0') { |
144 | p++; |
145 | to_add++; |
146 | } |
147 | return p; |
148 | } |
149 | |
150 | static int open_trunc_or_warn(const char *name) |
151 | { |
152 | int fd = open_trunc(name); |
153 | if (fd < 0) |
154 | bb_perror_msg("%s: warning: cannot open %s", |
155 | dir, name); |
156 | return fd; |
157 | } |
158 | |
159 | static void update_status(struct svdir *s) |
160 | { |
161 | ssize_t sz; |
162 | int fd; |
163 | svstatus_t status; |
164 | |
165 | /* pid */ |
166 | if (pidchanged) { |
167 | fd = open_trunc_or_warn("supervise/pid.new"); |
168 | if (fd < 0) |
169 | return; |
170 | if (s->pid) { |
171 | char spid[sizeof(int)*3 + 2]; |
172 | int size = sprintf(spid, "%u\n", (unsigned)s->pid); |
173 | write(fd, spid, size); |
174 | } |
175 | close(fd); |
176 | if (rename_or_warn("supervise/pid.new", |
177 | s->islog ? "log/supervise/pid" : "log/supervise/pid"+4)) |
178 | return; |
179 | pidchanged = 0; |
180 | } |
181 | |
182 | /* stat */ |
183 | fd = open_trunc_or_warn("supervise/stat.new"); |
184 | if (fd < -1) |
185 | return; |
186 | |
187 | { |
188 | char stat_buf[sizeof("finish, paused, got TERM, want down\n")]; |
189 | char *p = stat_buf; |
190 | switch (s->state) { |
191 | case S_DOWN: |
192 | p = add_str(p, "down"); |
193 | break; |
194 | case S_RUN: |
195 | p = add_str(p, "run"); |
196 | break; |
197 | case S_FINISH: |
198 | p = add_str(p, "finish"); |
199 | break; |
200 | } |
201 | if (s->ctrl & C_PAUSE) p = add_str(p, ", paused"); |
202 | if (s->ctrl & C_TERM) p = add_str(p, ", got TERM"); |
203 | if (s->state != S_DOWN) |
204 | switch (s->want) { |
205 | case W_DOWN: |
206 | p = add_str(p, ", want down"); |
207 | break; |
208 | case W_EXIT: |
209 | p = add_str(p, ", want exit"); |
210 | break; |
211 | } |
212 | *p++ = '\n'; |
213 | write(fd, stat_buf, p - stat_buf); |
214 | close(fd); |
215 | } |
216 | |
217 | rename_or_warn("supervise/stat.new", |
218 | s->islog ? "log/supervise/stat" : "log/supervise/stat"+4); |
219 | |
220 | /* supervise compatibility */ |
221 | memset(&status, 0, sizeof(status)); |
222 | status.time_be64 = SWAP_BE64(s->start.tv_sec + 0x400000000000000aULL); |
223 | status.time_nsec_be32 = SWAP_BE32(s->start.tv_nsec); |
224 | status.pid_le32 = SWAP_LE32(s->pid); |
225 | if (s->ctrl & C_PAUSE) |
226 | status.paused = 1; |
227 | if (s->want == W_UP) |
228 | status.want = 'u'; |
229 | else |
230 | status.want = 'd'; |
231 | if (s->ctrl & C_TERM) |
232 | status.got_term = 1; |
233 | status.run_or_finish = s->state; |
234 | fd = open_trunc_or_warn("supervise/status.new"); |
235 | if (fd < 0) |
236 | return; |
237 | sz = write(fd, &status, sizeof(status)); |
238 | close(fd); |
239 | if (sz != sizeof(status)) { |
240 | warn_cannot("write supervise/status.new"); |
241 | unlink("supervise/status.new"); |
242 | return; |
243 | } |
244 | rename_or_warn("supervise/status.new", |
245 | s->islog ? "log/supervise/status" : "log/supervise/status"+4); |
246 | } |
247 | |
248 | static unsigned custom(struct svdir *s, char c) |
249 | { |
250 | pid_t pid; |
251 | int w; |
252 | char a[10]; |
253 | struct stat st; |
254 | char *prog[2]; |
255 | |
256 | if (s->islog) return 0; |
257 | strcpy(a, "control/?"); |
258 | a[8] = c; /* replace '?' */ |
259 | if (stat(a, &st) == 0) { |
260 | if (st.st_mode & S_IXUSR) { |
261 | pid = vfork(); |
262 | if (pid == -1) { |
263 | warn_cannot("vfork for control/?"); |
264 | return 0; |
265 | } |
266 | if (!pid) { |
267 | /* child */ |
268 | if (haslog && dup2(logpipe.wr, 1) == -1) |
269 | warn_cannot("setup stdout for control/?"); |
270 | prog[0] = a; |
271 | prog[1] = NULL; |
272 | execv(a, prog); |
273 | fatal_cannot("run control/?"); |
274 | } |
275 | /* parent */ |
276 | while (safe_waitpid(pid, &w, 0) == -1) { |
277 | warn_cannot("wait for child control/?"); |
278 | return 0; |
279 | } |
280 | return !wait_exitcode(w); |
281 | } |
282 | } else { |
283 | if (errno != ENOENT) |
284 | warn_cannot("stat control/?"); |
285 | } |
286 | return 0; |
287 | } |
288 | |
289 | static void stopservice(struct svdir *s) |
290 | { |
291 | if (s->pid && !custom(s, 't')) { |
292 | kill(s->pid, SIGTERM); |
293 | s->ctrl |= C_TERM; |
294 | update_status(s); |
295 | } |
296 | if (s->want == W_DOWN) { |
297 | kill(s->pid, SIGCONT); |
298 | custom(s, 'd'); |
299 | return; |
300 | } |
301 | if (s->want == W_EXIT) { |
302 | kill(s->pid, SIGCONT); |
303 | custom(s, 'x'); |
304 | } |
305 | } |
306 | |
307 | static void startservice(struct svdir *s) |
308 | { |
309 | int p; |
310 | char *run[2]; |
311 | |
312 | if (s->state == S_FINISH) |
313 | run[0] = (char*)"./finish"; |
314 | else { |
315 | run[0] = (char*)"./run"; |
316 | custom(s, 'u'); |
317 | } |
318 | run[1] = NULL; |
319 | |
320 | if (s->pid != 0) |
321 | stopservice(s); /* should never happen */ |
322 | while ((p = vfork()) == -1) { |
323 | warn_cannot("vfork, sleeping"); |
324 | sleep(5); |
325 | } |
326 | if (p == 0) { |
327 | /* child */ |
328 | if (haslog) { |
329 | /* NB: bug alert! right order is close, then dup2 */ |
330 | if (s->islog) { |
331 | xchdir("./log"); |
332 | close(logpipe.wr); |
333 | xdup2(logpipe.rd, 0); |
334 | } else { |
335 | close(logpipe.rd); |
336 | xdup2(logpipe.wr, 1); |
337 | } |
338 | } |
339 | /* Non-ignored signals revert to SIG_DFL on exec anyway */ |
340 | /*bb_signals(0 |
341 | + (1 << SIGCHLD) |
342 | + (1 << SIGTERM) |
343 | , SIG_DFL);*/ |
344 | sig_unblock(SIGCHLD); |
345 | sig_unblock(SIGTERM); |
346 | execvp(*run, run); |
347 | fatal2_cannot(s->islog ? "start log/" : "start ", *run); |
348 | } |
349 | /* parent */ |
350 | if (s->state != S_FINISH) { |
351 | gettimeofday_ns(&s->start); |
352 | s->state = S_RUN; |
353 | } |
354 | s->pid = p; |
355 | pidchanged = 1; |
356 | s->ctrl = C_NOOP; |
357 | update_status(s); |
358 | } |
359 | |
360 | static int ctrl(struct svdir *s, char c) |
361 | { |
362 | int sig; |
363 | |
364 | switch (c) { |
365 | case 'd': /* down */ |
366 | s->want = W_DOWN; |
367 | update_status(s); |
368 | if (s->pid && s->state != S_FINISH) |
369 | stopservice(s); |
370 | break; |
371 | case 'u': /* up */ |
372 | s->want = W_UP; |
373 | update_status(s); |
374 | if (s->pid == 0) |
375 | startservice(s); |
376 | break; |
377 | case 'x': /* exit */ |
378 | if (s->islog) |
379 | break; |
380 | s->want = W_EXIT; |
381 | update_status(s); |
382 | /* FALLTHROUGH */ |
383 | case 't': /* sig term */ |
384 | if (s->pid && s->state != S_FINISH) |
385 | stopservice(s); |
386 | break; |
387 | case 'k': /* sig kill */ |
388 | if (s->pid && !custom(s, c)) |
389 | kill(s->pid, SIGKILL); |
390 | s->state = S_DOWN; |
391 | break; |
392 | case 'p': /* sig pause */ |
393 | if (s->pid && !custom(s, c)) |
394 | kill(s->pid, SIGSTOP); |
395 | s->ctrl |= C_PAUSE; |
396 | update_status(s); |
397 | break; |
398 | case 'c': /* sig cont */ |
399 | if (s->pid && !custom(s, c)) |
400 | kill(s->pid, SIGCONT); |
401 | if (s->ctrl & C_PAUSE) |
402 | s->ctrl &= ~C_PAUSE; |
403 | update_status(s); |
404 | break; |
405 | case 'o': /* once */ |
406 | s->want = W_DOWN; |
407 | update_status(s); |
408 | if (!s->pid) |
409 | startservice(s); |
410 | break; |
411 | case 'a': /* sig alarm */ |
412 | sig = SIGALRM; |
413 | goto sendsig; |
414 | case 'h': /* sig hup */ |
415 | sig = SIGHUP; |
416 | goto sendsig; |
417 | case 'i': /* sig int */ |
418 | sig = SIGINT; |
419 | goto sendsig; |
420 | case 'q': /* sig quit */ |
421 | sig = SIGQUIT; |
422 | goto sendsig; |
423 | case '1': /* sig usr1 */ |
424 | sig = SIGUSR1; |
425 | goto sendsig; |
426 | case '2': /* sig usr2 */ |
427 | sig = SIGUSR2; |
428 | goto sendsig; |
429 | } |
430 | return 1; |
431 | sendsig: |
432 | if (s->pid && !custom(s, c)) |
433 | kill(s->pid, sig); |
434 | return 1; |
435 | } |
436 | |
437 | int runsv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
438 | int runsv_main(int argc UNUSED_PARAM, char **argv) |
439 | { |
440 | struct stat s; |
441 | int fd; |
442 | int r; |
443 | char buf[256]; |
444 | |
445 | INIT_G(); |
446 | |
447 | if (!argv[1] || argv[2]) |
448 | bb_show_usage(); |
449 | dir = argv[1]; |
450 | |
451 | xpiped_pair(selfpipe); |
452 | close_on_exec_on(selfpipe.rd); |
453 | close_on_exec_on(selfpipe.wr); |
454 | ndelay_on(selfpipe.rd); |
455 | ndelay_on(selfpipe.wr); |
456 | |
457 | sig_block(SIGCHLD); |
458 | bb_signals_recursive(1 << SIGCHLD, s_child); |
459 | sig_block(SIGTERM); |
460 | bb_signals_recursive(1 << SIGTERM, s_term); |
461 | |
462 | xchdir(dir); |
463 | /* bss: svd[0].pid = 0; */ |
464 | if (S_DOWN) svd[0].state = S_DOWN; /* otherwise already 0 (bss) */ |
465 | if (C_NOOP) svd[0].ctrl = C_NOOP; |
466 | if (W_UP) svd[0].want = W_UP; |
467 | /* bss: svd[0].islog = 0; */ |
468 | /* bss: svd[1].pid = 0; */ |
469 | gettimeofday_ns(&svd[0].start); |
470 | if (stat("down", &s) != -1) svd[0].want = W_DOWN; |
471 | |
472 | if (stat("log", &s) == -1) { |
473 | if (errno != ENOENT) |
474 | warn_cannot("stat ./log"); |
475 | } else { |
476 | if (!S_ISDIR(s.st_mode)) { |
477 | errno = 0; |
478 | warn_cannot("stat log/down: log is not a directory"); |
479 | } else { |
480 | haslog = 1; |
481 | svd[1].state = S_DOWN; |
482 | svd[1].ctrl = C_NOOP; |
483 | svd[1].want = W_UP; |
484 | svd[1].islog = 1; |
485 | gettimeofday_ns(&svd[1].start); |
486 | if (stat("log/down", &s) != -1) |
487 | svd[1].want = W_DOWN; |
488 | xpiped_pair(logpipe); |
489 | close_on_exec_on(logpipe.rd); |
490 | close_on_exec_on(logpipe.wr); |
491 | } |
492 | } |
493 | |
494 | if (mkdir("supervise", 0700) == -1) { |
495 | r = readlink("supervise", buf, sizeof(buf)); |
496 | if (r != -1) { |
497 | if (r == sizeof(buf)) |
498 | fatal2x_cannot("readlink ./supervise", ": name too long"); |
499 | buf[r] = 0; |
500 | mkdir(buf, 0700); |
501 | } else { |
502 | if ((errno != ENOENT) && (errno != EINVAL)) |
503 | fatal_cannot("readlink ./supervise"); |
504 | } |
505 | } |
506 | svd[0].fdlock = xopen3("log/supervise/lock"+4, |
507 | O_WRONLY|O_NDELAY|O_APPEND|O_CREAT, 0600); |
508 | if (lock_exnb(svd[0].fdlock) == -1) |
509 | fatal_cannot("lock supervise/lock"); |
510 | close_on_exec_on(svd[0].fdlock); |
511 | if (haslog) { |
512 | if (mkdir("log/supervise", 0700) == -1) { |
513 | r = readlink("log/supervise", buf, 256); |
514 | if (r != -1) { |
515 | if (r == 256) |
516 | fatal2x_cannot("readlink ./log/supervise", ": name too long"); |
517 | buf[r] = 0; |
518 | fd = xopen(".", O_RDONLY|O_NDELAY); |
519 | xchdir("./log"); |
520 | mkdir(buf, 0700); |
521 | if (fchdir(fd) == -1) |
522 | fatal_cannot("change back to service directory"); |
523 | close(fd); |
524 | } |
525 | else { |
526 | if ((errno != ENOENT) && (errno != EINVAL)) |
527 | fatal_cannot("readlink ./log/supervise"); |
528 | } |
529 | } |
530 | svd[1].fdlock = xopen3("log/supervise/lock", |
531 | O_WRONLY|O_NDELAY|O_APPEND|O_CREAT, 0600); |
532 | if (lock_ex(svd[1].fdlock) == -1) |
533 | fatal_cannot("lock log/supervise/lock"); |
534 | close_on_exec_on(svd[1].fdlock); |
535 | } |
536 | |
537 | mkfifo("log/supervise/control"+4, 0600); |
538 | svd[0].fdcontrol = xopen("log/supervise/control"+4, O_RDONLY|O_NDELAY); |
539 | close_on_exec_on(svd[0].fdcontrol); |
540 | svd[0].fdcontrolwrite = xopen("log/supervise/control"+4, O_WRONLY|O_NDELAY); |
541 | close_on_exec_on(svd[0].fdcontrolwrite); |
542 | update_status(&svd[0]); |
543 | if (haslog) { |
544 | mkfifo("log/supervise/control", 0600); |
545 | svd[1].fdcontrol = xopen("log/supervise/control", O_RDONLY|O_NDELAY); |
546 | close_on_exec_on(svd[1].fdcontrol); |
547 | svd[1].fdcontrolwrite = xopen("log/supervise/control", O_WRONLY|O_NDELAY); |
548 | close_on_exec_on(svd[1].fdcontrolwrite); |
549 | update_status(&svd[1]); |
550 | } |
551 | mkfifo("log/supervise/ok"+4, 0600); |
552 | fd = xopen("log/supervise/ok"+4, O_RDONLY|O_NDELAY); |
553 | close_on_exec_on(fd); |
554 | if (haslog) { |
555 | mkfifo("log/supervise/ok", 0600); |
556 | fd = xopen("log/supervise/ok", O_RDONLY|O_NDELAY); |
557 | close_on_exec_on(fd); |
558 | } |
559 | for (;;) { |
560 | struct pollfd x[3]; |
561 | unsigned deadline; |
562 | char ch; |
563 | |
564 | if (haslog) |
565 | if (!svd[1].pid && svd[1].want == W_UP) |
566 | startservice(&svd[1]); |
567 | if (!svd[0].pid) |
568 | if (svd[0].want == W_UP || svd[0].state == S_FINISH) |
569 | startservice(&svd[0]); |
570 | |
571 | x[0].fd = selfpipe.rd; |
572 | x[0].events = POLLIN; |
573 | x[1].fd = svd[0].fdcontrol; |
574 | x[1].events = POLLIN; |
575 | /* x[2] is used only if haslog == 1 */ |
576 | x[2].fd = svd[1].fdcontrol; |
577 | x[2].events = POLLIN; |
578 | sig_unblock(SIGTERM); |
579 | sig_unblock(SIGCHLD); |
580 | poll(x, 2 + haslog, 3600*1000); |
581 | sig_block(SIGTERM); |
582 | sig_block(SIGCHLD); |
583 | |
584 | while (read(selfpipe.rd, &ch, 1) == 1) |
585 | continue; |
586 | |
587 | for (;;) { |
588 | pid_t child; |
589 | int wstat; |
590 | |
591 | child = wait_any_nohang(&wstat); |
592 | if (!child) |
593 | break; |
594 | if ((child == -1) && (errno != EINTR)) |
595 | break; |
596 | if (child == svd[0].pid) { |
597 | svd[0].pid = 0; |
598 | pidchanged = 1; |
599 | svd[0].ctrl &=~ C_TERM; |
600 | if (svd[0].state != S_FINISH) { |
601 | fd = open_read("finish"); |
602 | if (fd != -1) { |
603 | close(fd); |
604 | svd[0].state = S_FINISH; |
605 | update_status(&svd[0]); |
606 | continue; |
607 | } |
608 | } |
609 | svd[0].state = S_DOWN; |
610 | deadline = svd[0].start.tv_sec + 1; |
611 | gettimeofday_ns(&svd[0].start); |
612 | update_status(&svd[0]); |
613 | if (LESS(svd[0].start.tv_sec, deadline)) |
614 | sleep(1); |
615 | } |
616 | if (haslog) { |
617 | if (child == svd[1].pid) { |
618 | svd[1].pid = 0; |
619 | pidchanged = 1; |
620 | svd[1].state = S_DOWN; |
621 | svd[1].ctrl &= ~C_TERM; |
622 | deadline = svd[1].start.tv_sec + 1; |
623 | gettimeofday_ns(&svd[1].start); |
624 | update_status(&svd[1]); |
625 | if (LESS(svd[1].start.tv_sec, deadline)) |
626 | sleep(1); |
627 | } |
628 | } |
629 | } /* for (;;) */ |
630 | if (read(svd[0].fdcontrol, &ch, 1) == 1) |
631 | ctrl(&svd[0], ch); |
632 | if (haslog) |
633 | if (read(svd[1].fdcontrol, &ch, 1) == 1) |
634 | ctrl(&svd[1], ch); |
635 | |
636 | if (sigterm) { |
637 | ctrl(&svd[0], 'x'); |
638 | sigterm = 0; |
639 | } |
640 | |
641 | if (svd[0].want == W_EXIT && svd[0].state == S_DOWN) { |
642 | if (svd[1].pid == 0) |
643 | _exit(EXIT_SUCCESS); |
644 | if (svd[1].want != W_EXIT) { |
645 | svd[1].want = W_EXIT; |
646 | /* stopservice(&svd[1]); */ |
647 | update_status(&svd[1]); |
648 | close(logpipe.wr); |
649 | close(logpipe.rd); |
650 | } |
651 | } |
652 | } /* for (;;) */ |
653 | /* not reached */ |
654 | return 0; |
655 | } |