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Commit | Line | Data |
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a54d5262 DW |
1 | /* |
2 | * mdmon - monitor external metadata arrays | |
3 | * | |
e736b623 N |
4 | * Copyright (C) 2007-2009 Neil Brown <neilb@suse.de> |
5 | * Copyright (C) 2007-2009 Intel Corporation | |
a54d5262 DW |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms and conditions of the GNU General Public License, | |
9 | * version 2, as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along with | |
17 | * this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
19 | */ | |
549e9569 NB |
20 | |
21 | /* | |
22 | * md array manager. | |
23 | * When md arrays have user-space managed metadata, this is the program | |
24 | * that does the managing. | |
25 | * | |
26 | * Given one argument: the name of the array (e.g. /dev/md0) that is | |
27 | * the container. | |
28 | * We fork off a helper that runs high priority and mlocked. It responds to | |
29 | * device failures and other events that might stop writeout, or that are | |
30 | * trivial to deal with. | |
31 | * The main thread then watches for new arrays being created in the container | |
32 | * and starts monitoring them too ... along with a few other tasks. | |
33 | * | |
34 | * The main thread communicates with the priority thread by writing over | |
35 | * a pipe. | |
36 | * Separate programs can communicate with the main thread via Unix-domain | |
37 | * socket. | |
38 | * The two threads share address space and open file table. | |
39 | * | |
40 | */ | |
41 | ||
42 | #ifndef _GNU_SOURCE | |
43 | #define _GNU_SOURCE | |
44 | #endif | |
45 | ||
46 | #include <unistd.h> | |
47 | #include <stdlib.h> | |
4d43913c | 48 | #include <sys/types.h> |
549e9569 NB |
49 | #include <sys/stat.h> |
50 | #include <sys/socket.h> | |
51 | #include <sys/un.h> | |
52 | #include <sys/mman.h> | |
4d43913c | 53 | #include <sys/syscall.h> |
9fe32043 | 54 | #include <sys/wait.h> |
549e9569 NB |
55 | #include <stdio.h> |
56 | #include <errno.h> | |
57 | #include <string.h> | |
58 | #include <fcntl.h> | |
b109d928 | 59 | #include <signal.h> |
13047e4c | 60 | #include <dirent.h> |
f4190c2f DW |
61 | #ifdef USE_PTHREADS |
62 | #include <pthread.h> | |
63 | #else | |
549e9569 | 64 | #include <sched.h> |
f4190c2f | 65 | #endif |
549e9569 NB |
66 | |
67 | #include "mdadm.h" | |
68 | #include "mdmon.h" | |
69 | ||
549e9569 NB |
70 | struct active_array *discard_this; |
71 | struct active_array *pending_discard; | |
4d43913c NB |
72 | |
73 | int mon_tid, mgr_tid; | |
549e9569 | 74 | |
6144ed44 DW |
75 | int sigterm; |
76 | ||
f4190c2f DW |
77 | #ifdef USE_PTHREADS |
78 | static void *run_child(void *v) | |
79 | { | |
80 | struct supertype *c = v; | |
81 | ||
82 | mon_tid = syscall(SYS_gettid); | |
83 | do_monitor(c); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | static int clone_monitor(struct supertype *container) | |
88 | { | |
89 | pthread_attr_t attr; | |
90 | pthread_t thread; | |
91 | int rc; | |
92 | ||
93 | mon_tid = -1; | |
94 | pthread_attr_init(&attr); | |
95 | pthread_attr_setstacksize(&attr, 4096); | |
96 | pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); | |
97 | rc = pthread_create(&thread, &attr, run_child, container); | |
98 | if (rc) | |
99 | return rc; | |
100 | while (mon_tid == -1) | |
101 | usleep(10); | |
102 | pthread_attr_destroy(&attr); | |
103 | ||
104 | mgr_tid = syscall(SYS_gettid); | |
105 | ||
106 | return mon_tid; | |
107 | } | |
108 | #else /* USE_PTHREADS */ | |
109 | static int run_child(void *v) | |
549e9569 NB |
110 | { |
111 | struct supertype *c = v; | |
1ed3f387 | 112 | |
549e9569 NB |
113 | do_monitor(c); |
114 | return 0; | |
115 | } | |
116 | ||
97f734fd N |
117 | #ifdef __ia64__ |
118 | int __clone2(int (*fn)(void *), | |
119 | void *child_stack_base, size_t stack_size, | |
120 | int flags, void *arg, ... | |
121 | /* pid_t *pid, struct user_desc *tls, pid_t *ctid */ ); | |
122 | #endif | |
f4190c2f | 123 | static int clone_monitor(struct supertype *container) |
549e9569 | 124 | { |
549e9569 | 125 | static char stack[4096]; |
549e9569 | 126 | |
97f734fd N |
127 | #ifdef __ia64__ |
128 | mon_tid = __clone2(run_child, stack, sizeof(stack), | |
129 | CLONE_FS|CLONE_FILES|CLONE_VM|CLONE_SIGHAND|CLONE_THREAD, | |
130 | container); | |
131 | #else | |
2cc98f9e | 132 | mon_tid = clone(run_child, stack+4096-64, |
549e9569 NB |
133 | CLONE_FS|CLONE_FILES|CLONE_VM|CLONE_SIGHAND|CLONE_THREAD, |
134 | container); | |
97f734fd | 135 | #endif |
3e70c845 | 136 | |
4d43913c | 137 | mgr_tid = syscall(SYS_gettid); |
2cc98f9e DW |
138 | |
139 | return mon_tid; | |
549e9569 | 140 | } |
f4190c2f | 141 | #endif /* USE_PTHREADS */ |
549e9569 | 142 | |
fa716c83 | 143 | static int make_pidfile(char *devname) |
549e9569 NB |
144 | { |
145 | char path[100]; | |
146 | char pid[10]; | |
147 | int fd; | |
3d2c4fc7 DW |
148 | int n; |
149 | ||
753cf905 | 150 | if (mkdir(MDMON_DIR, 0755) < 0 && |
ed8fa52f LB |
151 | errno != EEXIST) |
152 | return -errno; | |
753cf905 | 153 | sprintf(path, "%s/%s.pid", MDMON_DIR, devname); |
549e9569 | 154 | |
5d4d1b26 | 155 | fd = open(path, O_RDWR|O_CREAT|O_EXCL, 0600); |
549e9569 | 156 | if (fd < 0) |
295646b3 | 157 | return -errno; |
549e9569 | 158 | sprintf(pid, "%d\n", getpid()); |
3d2c4fc7 | 159 | n = write(fd, pid, strlen(pid)); |
549e9569 | 160 | close(fd); |
3d2c4fc7 DW |
161 | if (n < 0) |
162 | return -errno; | |
549e9569 NB |
163 | return 0; |
164 | } | |
165 | ||
9f1da824 | 166 | static void try_kill_monitor(pid_t pid, char *devname, int sock) |
96a8270d DW |
167 | { |
168 | char buf[100]; | |
169 | int fd; | |
417a4b04 | 170 | int n; |
af7ca334 | 171 | long fl; |
b109d928 | 172 | |
8aae4219 DW |
173 | /* first rule of survival... don't off yourself */ |
174 | if (pid == getpid()) | |
175 | return; | |
176 | ||
b109d928 DW |
177 | /* kill this process if it is mdmon */ |
178 | sprintf(buf, "/proc/%lu/cmdline", (unsigned long) pid); | |
179 | fd = open(buf, O_RDONLY); | |
180 | if (fd < 0) | |
181 | return; | |
182 | ||
417a4b04 N |
183 | n = read(fd, buf, sizeof(buf)-1); |
184 | buf[sizeof(buf)-1] = 0; | |
185 | close(fd); | |
b109d928 | 186 | |
a99d3469 N |
187 | /* Note that if started with --offroot, the name |
188 | * might be "@dmon" | |
189 | */ | |
190 | if (n < 0 || !(strstr(buf, "mdmon") || | |
191 | strstr(buf, "@dmon"))) | |
883a6142 DW |
192 | return; |
193 | ||
194 | kill(pid, SIGTERM); | |
195 | ||
88e5516e N |
196 | if (sock < 0) |
197 | return; | |
198 | ||
af7ca334 N |
199 | /* Wait for monitor to exit by reading from the socket, after |
200 | * clearing the non-blocking flag */ | |
201 | fl = fcntl(sock, F_GETFL, 0); | |
202 | fl &= ~O_NONBLOCK; | |
203 | fcntl(sock, F_SETFL, fl); | |
fcf57625 N |
204 | n = read(sock, buf, 100); |
205 | /* Ignore result, it is just the wait that | |
206 | * matters | |
207 | */ | |
b109d928 DW |
208 | } |
209 | ||
e0d6609f NB |
210 | void remove_pidfile(char *devname) |
211 | { | |
212 | char buf[100]; | |
213 | ||
753cf905 | 214 | sprintf(buf, "%s/%s.pid", MDMON_DIR, devname); |
e0d6609f | 215 | unlink(buf); |
753cf905 | 216 | sprintf(buf, "%s/%s.sock", MDMON_DIR, devname); |
57752795 | 217 | unlink(buf); |
e0d6609f NB |
218 | } |
219 | ||
fa716c83 | 220 | static int make_control_sock(char *devname) |
549e9569 NB |
221 | { |
222 | char path[100]; | |
223 | int sfd; | |
224 | long fl; | |
225 | struct sockaddr_un addr; | |
226 | ||
6144ed44 DW |
227 | if (sigterm) |
228 | return -1; | |
229 | ||
753cf905 | 230 | sprintf(path, "%s/%s.sock", MDMON_DIR, devname); |
549e9569 NB |
231 | unlink(path); |
232 | sfd = socket(PF_LOCAL, SOCK_STREAM, 0); | |
233 | if (sfd < 0) | |
234 | return -1; | |
235 | ||
236 | addr.sun_family = PF_LOCAL; | |
237 | strcpy(addr.sun_path, path); | |
238 | if (bind(sfd, &addr, sizeof(addr)) < 0) { | |
239 | close(sfd); | |
240 | return -1; | |
241 | } | |
242 | listen(sfd, 10); | |
243 | fl = fcntl(sfd, F_GETFL, 0); | |
244 | fl |= O_NONBLOCK; | |
245 | fcntl(sfd, F_SETFL, fl); | |
246 | return sfd; | |
247 | } | |
248 | ||
6144ed44 DW |
249 | static void term(int sig) |
250 | { | |
251 | sigterm = 1; | |
252 | } | |
253 | ||
4d43913c NB |
254 | static void wake_me(int sig) |
255 | { | |
256 | ||
257 | } | |
258 | ||
16ddab0d DW |
259 | /* if we are debugging and starting mdmon by hand then don't fork */ |
260 | static int do_fork(void) | |
261 | { | |
262 | #ifdef DEBUG | |
40ebbb9c | 263 | if (check_env("MDADM_NO_MDMON")) |
16ddab0d DW |
264 | return 0; |
265 | #endif | |
266 | ||
267 | return 1; | |
268 | } | |
269 | ||
13047e4c DW |
270 | void usage(void) |
271 | { | |
eb155f6d JS |
272 | fprintf(stderr, |
273 | "Usage: mdmon [options] CONTAINER\n" | |
274 | "\n" | |
275 | "Options are:\n" | |
276 | " --help -h : This message\n" | |
277 | " --all : All devices\n" | |
278 | " --takeover -t : Takeover container\n" | |
da827518 JS |
279 | " --offroot : Set first character of argv[0] to @ to indicate the\n" |
280 | " application was launched from initrd/initramfs and\n" | |
281 | " should not be shutdown by systemd as part of the\n" | |
282 | " regular shutdown process.\n" | |
eb155f6d | 283 | ); |
13047e4c DW |
284 | exit(2); |
285 | } | |
16ddab0d | 286 | |
b5c727dc | 287 | static int mdmon(char *devname, int devnum, int must_fork, int takeover); |
1ffd2840 | 288 | |
549e9569 NB |
289 | int main(int argc, char *argv[]) |
290 | { | |
13047e4c | 291 | char *container_name = NULL; |
e8a70c89 N |
292 | int devnum; |
293 | char *devname; | |
1ffd2840 | 294 | int status = 0; |
eb155f6d | 295 | int opt; |
b5c727dc N |
296 | int all = 0; |
297 | int takeover = 0; | |
eb155f6d JS |
298 | static struct option options[] = { |
299 | {"all", 0, NULL, 'a'}, | |
300 | {"takeover", 0, NULL, 't'}, | |
301 | {"help", 0, NULL, 'h'}, | |
da827518 | 302 | {"offroot", 0, NULL, OffRootOpt}, |
eb155f6d JS |
303 | {NULL, 0, NULL, 0} |
304 | }; | |
305 | ||
bcd2b448 | 306 | while ((opt = getopt_long(argc, argv, "tha", options, NULL)) != -1) { |
eb155f6d JS |
307 | switch (opt) { |
308 | case 'a': | |
309 | container_name = argv[optind-1]; | |
b5c727dc | 310 | all = 1; |
eb155f6d JS |
311 | break; |
312 | case 't': | |
b5c727dc | 313 | takeover = 1; |
eb155f6d | 314 | break; |
da827518 JS |
315 | case OffRootOpt: |
316 | argv[0][0] = '@'; | |
317 | break; | |
eb155f6d JS |
318 | case 'h': |
319 | default: | |
b5c727dc | 320 | usage(); |
eb155f6d JS |
321 | break; |
322 | } | |
323 | } | |
324 | ||
325 | if (all == 0 && container_name == NULL) { | |
326 | if (argv[optind]) | |
327 | container_name = argv[optind]; | |
549e9569 | 328 | } |
eb155f6d | 329 | |
eb49460b LB |
330 | if (container_name == NULL) |
331 | usage(); | |
13047e4c | 332 | |
eb155f6d JS |
333 | if (argc - optind > 1) |
334 | usage(); | |
335 | ||
336 | if (strcmp(container_name, "/proc/mdstat") == 0) | |
337 | all = 1; | |
338 | ||
b5c727dc | 339 | if (all) { |
1ffd2840 | 340 | struct mdstat_ent *mdstat, *e; |
eb49460b | 341 | int container_len = strlen(container_name); |
1ffd2840 DW |
342 | |
343 | /* launch an mdmon instance for each container found */ | |
1ffd2840 DW |
344 | mdstat = mdstat_read(0, 0); |
345 | for (e = mdstat; e; e = e->next) { | |
f4db7a6f MM |
346 | if (e->metadata_version && |
347 | strncmp(e->metadata_version, "external:", 9) == 0 && | |
1ffd2840 DW |
348 | !is_subarray(&e->metadata_version[9])) { |
349 | devname = devnum2devname(e->devnum); | |
1b34f519 DW |
350 | /* update cmdline so this mdmon instance can be |
351 | * distinguished from others in a call to ps(1) | |
352 | */ | |
f21e18ca | 353 | if (strlen(devname) <= (unsigned)container_len) { |
eb49460b | 354 | memset(container_name, 0, container_len); |
1b34f519 DW |
355 | sprintf(container_name, "%s", devname); |
356 | } | |
3e7312a9 | 357 | status |= mdmon(devname, e->devnum, 1, |
b5c727dc | 358 | takeover); |
1ffd2840 DW |
359 | } |
360 | } | |
361 | free_mdstat(mdstat); | |
362 | ||
363 | return status; | |
364 | } else if (strncmp(container_name, "md", 2) == 0) { | |
6f4098a6 DW |
365 | devnum = devname2devnum(container_name); |
366 | devname = devnum2devname(devnum); | |
367 | if (strcmp(container_name, devname) != 0) | |
368 | devname = NULL; | |
369 | } else { | |
370 | struct stat st; | |
371 | ||
372 | devnum = NoMdDev; | |
373 | if (stat(container_name, &st) == 0) | |
374 | devnum = stat2devnum(&st); | |
375 | if (devnum == NoMdDev) | |
376 | devname = NULL; | |
377 | else | |
378 | devname = devnum2devname(devnum); | |
379 | } | |
380 | ||
381 | if (!devname) { | |
e8a70c89 N |
382 | fprintf(stderr, "mdmon: %s is not a valid md device name\n", |
383 | container_name); | |
384 | exit(1); | |
385 | } | |
b5c727dc | 386 | return mdmon(devname, devnum, do_fork(), takeover); |
1ffd2840 DW |
387 | } |
388 | ||
b5c727dc | 389 | static int mdmon(char *devname, int devnum, int must_fork, int takeover) |
1ffd2840 DW |
390 | { |
391 | int mdfd; | |
392 | struct mdinfo *mdi, *di; | |
393 | struct supertype *container; | |
394 | sigset_t set; | |
395 | struct sigaction act; | |
396 | int pfd[2]; | |
397 | int status; | |
398 | int ignore; | |
96a8270d | 399 | pid_t victim = -1; |
9f1da824 | 400 | int victim_sock = -1; |
1ffd2840 | 401 | |
b5c727dc | 402 | dprintf("starting mdmon for %s\n", devname); |
b928b5a0 | 403 | |
e8a70c89 | 404 | mdfd = open_dev(devnum); |
549e9569 | 405 | if (mdfd < 0) { |
1ffd2840 | 406 | fprintf(stderr, "mdmon: %s: %s\n", devname, |
549e9569 | 407 | strerror(errno)); |
1ffd2840 | 408 | return 1; |
549e9569 NB |
409 | } |
410 | if (md_get_version(mdfd) < 0) { | |
13047e4c | 411 | fprintf(stderr, "mdmon: %s: Not an md device\n", |
1ffd2840 DW |
412 | devname); |
413 | return 1; | |
549e9569 NB |
414 | } |
415 | ||
9fe32043 | 416 | /* Fork, and have the child tell us when they are ready */ |
3e7312a9 | 417 | if (must_fork) { |
3d2c4fc7 DW |
418 | if (pipe(pfd) != 0) { |
419 | fprintf(stderr, "mdmon: failed to create pipe\n"); | |
1ffd2840 | 420 | return 1; |
3d2c4fc7 | 421 | } |
16ddab0d DW |
422 | switch(fork()) { |
423 | case -1: | |
424 | fprintf(stderr, "mdmon: failed to fork: %s\n", | |
425 | strerror(errno)); | |
1ffd2840 | 426 | return 1; |
16ddab0d DW |
427 | case 0: /* child */ |
428 | close(pfd[0]); | |
429 | break; | |
430 | default: /* parent */ | |
431 | close(pfd[1]); | |
432 | if (read(pfd[0], &status, sizeof(status)) != sizeof(status)) { | |
433 | wait(&status); | |
434 | status = WEXITSTATUS(status); | |
435 | } | |
1ffd2840 | 436 | return status; |
9fe32043 | 437 | } |
16ddab0d DW |
438 | } else |
439 | pfd[0] = pfd[1] = -1; | |
549e9569 | 440 | |
503975b9 | 441 | container = xcalloc(1, sizeof(*container)); |
e8a70c89 N |
442 | container->devnum = devnum; |
443 | container->devname = devname; | |
13047e4c | 444 | container->arrays = NULL; |
96a8270d | 445 | container->sock = -1; |
13047e4c DW |
446 | |
447 | if (!container->devname) { | |
448 | fprintf(stderr, "mdmon: failed to allocate container name string\n"); | |
449 | exit(3); | |
450 | } | |
451 | ||
b526e52d | 452 | mdi = sysfs_read(mdfd, container->devnum, GET_VERSION|GET_LEVEL|GET_DEVS); |
13047e4c DW |
453 | |
454 | if (!mdi) { | |
455 | fprintf(stderr, "mdmon: failed to load sysfs info for %s\n", | |
456 | container->devname); | |
457 | exit(3); | |
458 | } | |
459 | if (mdi->array.level != UnSet) { | |
460 | fprintf(stderr, "mdmon: %s is not a container - cannot monitor\n", | |
1ffd2840 | 461 | devname); |
13047e4c DW |
462 | exit(3); |
463 | } | |
464 | if (mdi->array.major_version != -1 || | |
465 | mdi->array.minor_version != -2) { | |
466 | fprintf(stderr, "mdmon: %s does not use external metadata - cannot monitor\n", | |
1ffd2840 | 467 | devname); |
13047e4c DW |
468 | exit(3); |
469 | } | |
470 | ||
33414a01 | 471 | container->ss = version_to_superswitch(mdi->text_version); |
13047e4c | 472 | if (container->ss == NULL) { |
33414a01 | 473 | fprintf(stderr, "mdmon: %s uses unsupported metadata: %s\n", |
1ffd2840 | 474 | devname, mdi->text_version); |
13047e4c DW |
475 | exit(3); |
476 | } | |
477 | ||
478 | container->devs = NULL; | |
479 | for (di = mdi->devs; di; di = di->next) { | |
503975b9 | 480 | struct mdinfo *cd = xmalloc(sizeof(*cd)); |
13047e4c DW |
481 | *cd = *di; |
482 | cd->next = container->devs; | |
483 | container->devs = cd; | |
484 | } | |
485 | sysfs_free(mdi); | |
549e9569 | 486 | |
883a6142 DW |
487 | /* SIGUSR is sent between parent and child. So both block it |
488 | * and enable it only with pselect. | |
489 | */ | |
490 | sigemptyset(&set); | |
491 | sigaddset(&set, SIGUSR1); | |
883a6142 DW |
492 | sigaddset(&set, SIGTERM); |
493 | sigprocmask(SIG_BLOCK, &set, NULL); | |
494 | act.sa_handler = wake_me; | |
495 | act.sa_flags = 0; | |
496 | sigaction(SIGUSR1, &act, NULL); | |
883a6142 DW |
497 | act.sa_handler = term; |
498 | sigaction(SIGTERM, &act, NULL); | |
499 | act.sa_handler = SIG_IGN; | |
500 | sigaction(SIGPIPE, &act, NULL); | |
501 | ||
32f21701 | 502 | victim = mdmon_pid(container->devnum); |
84a230d9 | 503 | if (victim >= 0) |
32f21701 | 504 | victim_sock = connect_monitor(container->devname); |
13047e4c | 505 | |
13047e4c | 506 | ignore = chdir("/"); |
32f21701 N |
507 | if (!takeover && victim > 0 && victim_sock >= 0) { |
508 | if (fping_monitor(victim_sock) == 0) { | |
b109d928 DW |
509 | fprintf(stderr, "mdmon: %s already managed\n", |
510 | container->devname); | |
511 | exit(3); | |
24cfdbc5 | 512 | } |
32f21701 | 513 | close(victim_sock); |
88e5516e | 514 | victim_sock = -1; |
549e9569 | 515 | } |
0fb69d1d | 516 | if (container->ss->load_container(container, mdfd, devname)) { |
549e9569 | 517 | fprintf(stderr, "mdmon: Cannot load metadata for %s\n", |
1ffd2840 | 518 | devname); |
549e9569 NB |
519 | exit(3); |
520 | } | |
e8a70c89 | 521 | close(mdfd); |
549e9569 | 522 | |
9fe32043 N |
523 | /* Ok, this is close enough. We can say goodbye to our parent now. |
524 | */ | |
fa716c83 N |
525 | if (victim > 0) |
526 | remove_pidfile(devname); | |
fa716c83 | 527 | if (make_pidfile(devname) < 0) { |
753cf905 | 528 | exit(3); |
fa716c83 N |
529 | } |
530 | container->sock = make_control_sock(devname); | |
531 | ||
9fe32043 | 532 | status = 0; |
3d2c4fc7 DW |
533 | if (write(pfd[1], &status, sizeof(status)) < 0) |
534 | fprintf(stderr, "mdmon: failed to notify our parent: %d\n", | |
535 | getppid()); | |
9fe32043 N |
536 | close(pfd[1]); |
537 | ||
1373b07d | 538 | mlockall(MCL_CURRENT | MCL_FUTURE); |
549e9569 | 539 | |
3e70c845 | 540 | if (clone_monitor(container) < 0) { |
295646b3 | 541 | fprintf(stderr, "mdmon: failed to start monitor process: %s\n", |
549e9569 NB |
542 | strerror(errno)); |
543 | exit(2); | |
544 | } | |
545 | ||
fa716c83 | 546 | if (victim > 0) { |
9f1da824 | 547 | try_kill_monitor(victim, container->devname, victim_sock); |
88e5516e N |
548 | if (victim_sock >= 0) |
549 | close(victim_sock); | |
9f1da824 | 550 | } |
e98ef225 N |
551 | |
552 | setsid(); | |
553 | close(0); | |
554 | open("/dev/null", O_RDWR); | |
555 | close(1); | |
556 | ignore = dup(0); | |
557 | #ifndef DEBUG | |
558 | close(2); | |
559 | ignore = dup(0); | |
560 | #endif | |
561 | ||
e4c72d1d LB |
562 | /* This silliness is to stop the compiler complaining |
563 | * that we ignore 'ignore' | |
564 | */ | |
565 | if (ignore) | |
566 | ignore++; | |
567 | ||
549e9569 NB |
568 | do_manager(container); |
569 | ||
570 | exit(0); | |
571 | } | |
999b4972 N |
572 | |
573 | /* Some stub functions so super-* can link with us */ | |
574 | int child_monitor(int afd, struct mdinfo *sra, struct reshape *reshape, | |
575 | struct supertype *st, unsigned long blocks, | |
576 | int *fds, unsigned long long *offsets, | |
577 | int dests, int *destfd, unsigned long long *destoffsets) | |
578 | { | |
579 | return 0; | |
580 | } | |
afbbf073 AK |
581 | |
582 | int restore_stripes(int *dest, unsigned long long *offsets, | |
583 | int raid_disks, int chunk_size, int level, int layout, | |
584 | int source, unsigned long long read_offset, | |
585 | unsigned long long start, unsigned long long length, | |
586 | char *src_buf) | |
587 | { | |
588 | return 1; | |
589 | } | |
590 | ||
591 | void abort_reshape(struct mdinfo *sra) | |
592 | { | |
593 | return; | |
594 | } | |
595 | ||
596 | int save_stripes(int *source, unsigned long long *offsets, | |
597 | int raid_disks, int chunk_size, int level, int layout, | |
598 | int nwrites, int *dest, | |
599 | unsigned long long start, unsigned long long length, | |
600 | char *buf) | |
601 | { | |
602 | return 0; | |
603 | } |