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fe000966 DM |
1 | /* |
2 | Copyright (C) 2010 Proxmox Server Solutions GmbH | |
3 | ||
4 | This program is free software: you can redistribute it and/or modify | |
5 | it under the terms of the GNU Affero General Public License as published by | |
6 | the Free Software Foundation, either version 3 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU Affero General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Affero General Public License | |
15 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | ||
17 | Author: Dietmar Maurer <dietmar@proxmox.com> | |
18 | ||
19 | */ | |
20 | ||
21 | #ifdef HAVE_CONFIG_H | |
22 | #include <config.h> | |
23 | #endif /* HAVE_CONFIG_H */ | |
24 | ||
25 | #include <stdlib.h> | |
26 | #include <stdio.h> | |
27 | #include <string.h> | |
28 | #include <unistd.h> | |
29 | #include <glib.h> | |
fe000966 DM |
30 | #include <sys/types.h> |
31 | #include <sys/stat.h> | |
32 | #include <sys/mount.h> | |
33 | #include <fcntl.h> | |
34 | #include <errno.h> | |
35 | #include <sys/file.h> | |
36 | #include <sys/types.h> | |
37 | #include <dirent.h> | |
38 | #include <sys/utsname.h> | |
39 | #include <grp.h> | |
40 | #include <netdb.h> | |
41 | #include <sys/socket.h> | |
42 | #include <netinet/in.h> | |
43 | #include <arpa/inet.h> | |
44 | ||
45 | #include <qb/qbdefs.h> | |
46 | #include <qb/qbutil.h> | |
64405e32 | 47 | #include <qb/qblog.h> |
fe000966 DM |
48 | |
49 | #include "cfs-utils.h" | |
50 | #include "cfs-plug.h" | |
51 | #include "cfs-plug-memdb.h" | |
52 | #include "status.h" | |
53 | #include "dcdb.h" | |
54 | #include "dfsm.h" | |
55 | #include "quorum.h" | |
56 | #include "confdb.h" | |
57 | #include "server.h" | |
58 | ||
59 | #define DBFILENAME VARLIBDIR "/config.db" | |
60 | #define LOCKFILE VARLIBDIR "/.pmxcfs.lockfile" | |
61 | ||
62 | #define CFSDIR "/etc/pve" | |
63 | ||
64 | cfs_t cfs = { | |
65 | .debug = 0, | |
fe000966 DM |
66 | }; |
67 | ||
68 | static struct fuse *fuse = NULL; | |
69 | ||
70 | static cfs_plug_t *root_plug; | |
71 | ||
72 | static void glib_print_handler(const gchar *string) | |
73 | { | |
64405e32 | 74 | printf("%s", string); |
fe000966 DM |
75 | } |
76 | ||
77 | static void glib_log_handler(const gchar *log_domain, | |
78 | GLogLevelFlags log_level, | |
79 | const gchar *message, | |
80 | gpointer user_data) | |
81 | { | |
82 | ||
83 | cfs_log(log_domain, log_level, NULL, 0, NULL, message); | |
84 | } | |
85 | ||
86 | static gboolean write_pidfile(pid_t pid) | |
87 | { | |
88 | char *strpid = g_strdup_printf("%d\n", pid); | |
89 | gboolean res = atomic_write_file(CFS_PID_FN, strpid, strlen(strpid), 0644, getgid()); | |
90 | g_free(strpid); | |
91 | ||
92 | return res; | |
93 | } | |
94 | ||
95 | static cfs_plug_t *find_plug(const char *path, char **sub) | |
96 | { | |
97 | g_return_val_if_fail(root_plug != NULL, NULL); | |
98 | g_return_val_if_fail(path != NULL, NULL); | |
99 | ||
100 | while(*path == '/') path++; | |
101 | ||
102 | cfs_debug("find_plug start %s", path); | |
103 | ||
104 | char *tmppath = g_strdup(path); | |
105 | char *subpath = tmppath; | |
106 | ||
107 | cfs_plug_t *plug = root_plug->lookup_plug(root_plug, &subpath); | |
108 | ||
109 | cfs_debug("find_plug end %s = %p (%s)", path, plug, subpath); | |
110 | ||
111 | if (subpath && subpath[0]) | |
112 | *sub = g_strdup(subpath); | |
113 | ||
114 | g_free(tmppath); | |
115 | ||
116 | return plug; | |
117 | } | |
118 | ||
119 | void *cfs_fuse_init(struct fuse_conn_info *conn) | |
120 | { | |
121 | return NULL; | |
122 | } | |
123 | ||
124 | static int cfs_fuse_getattr(const char *path, struct stat *stbuf) | |
125 | { | |
126 | cfs_debug("enter cfs_fuse_getattr %s", path); | |
127 | ||
128 | int ret = -EACCES; | |
129 | ||
130 | char *subpath = NULL; | |
131 | cfs_plug_t *plug = find_plug(path, &subpath); | |
132 | ||
133 | if (plug && plug->ops && plug->ops->getattr) { | |
134 | ret = plug->ops->getattr(plug, subpath ? subpath : "", stbuf); | |
135 | ||
136 | stbuf->st_gid = cfs.gid; | |
137 | ||
138 | stbuf->st_mode &= 0777750; // no access for other users | |
139 | ||
140 | if (path_is_private(path)) | |
141 | stbuf->st_mode &= 0777700; | |
142 | } | |
143 | ||
144 | cfs_debug("leave cfs_fuse_getattr %s (%d)", path, ret); | |
145 | ||
146 | if (subpath) | |
147 | g_free(subpath); | |
148 | ||
149 | return ret; | |
150 | ||
151 | } | |
152 | ||
153 | static int cfs_fuse_readdir(const char *path, void *buf, fuse_fill_dir_t filler, | |
154 | off_t offset, struct fuse_file_info *fi) | |
155 | { | |
156 | (void) offset; | |
157 | (void) fi; | |
158 | ||
159 | cfs_debug("enter cfs_fuse_readdir %s", path); | |
160 | ||
161 | int ret = -EACCES; | |
162 | ||
163 | char *subpath = NULL; | |
164 | cfs_plug_t *plug = find_plug(path, &subpath); | |
165 | ||
166 | if (!plug) | |
167 | goto ret; | |
168 | ||
169 | if (plug->ops && plug->ops->readdir) | |
170 | ret = plug->ops->readdir(plug, subpath ? subpath : "", buf, filler, 0, fi); | |
171 | ret: | |
172 | cfs_debug("leave cfs_fuse_readdir %s (%d)", path, ret); | |
173 | ||
174 | if (subpath) | |
175 | g_free(subpath); | |
176 | ||
177 | return ret; | |
178 | } | |
179 | ||
180 | static int cfs_fuse_mkdir(const char *path, mode_t mode) | |
181 | { | |
182 | cfs_debug("enter cfs_fuse_mkdir %s", path); | |
183 | ||
184 | int ret = -EACCES; | |
185 | ||
186 | char *subpath = NULL; | |
187 | cfs_plug_t *plug = find_plug(path, &subpath); | |
188 | ||
189 | if (!plug) | |
190 | goto ret; | |
191 | ||
192 | if (subpath && plug->ops && plug->ops->mkdir) | |
193 | ret = plug->ops->mkdir(plug, subpath, mode); | |
194 | ||
195 | ret: | |
196 | cfs_debug("leave cfs_fuse_mkdir %s (%d)", path, ret); | |
197 | ||
198 | if (subpath) | |
199 | g_free(subpath); | |
200 | ||
201 | return ret; | |
202 | } | |
203 | ||
204 | static int cfs_fuse_rmdir(const char *path) | |
205 | { | |
206 | cfs_debug("enter cfs_fuse_rmdir %s", path); | |
207 | ||
208 | int ret = -EACCES; | |
209 | ||
210 | char *subpath = NULL; | |
211 | cfs_plug_t *plug = find_plug(path, &subpath); | |
212 | ||
213 | if (!plug) | |
214 | goto ret; | |
215 | ||
216 | if (subpath && plug->ops && plug->ops->rmdir) | |
217 | ret = plug->ops->rmdir(plug, subpath); | |
218 | ||
219 | ret: | |
220 | cfs_debug("leave cfs_fuse_rmdir %s (%d)", path, ret); | |
221 | ||
222 | if (subpath) | |
223 | g_free(subpath); | |
224 | ||
225 | return ret; | |
226 | } | |
227 | ||
228 | static int cfs_fuse_rename(const char *from, const char *to) | |
229 | { | |
230 | cfs_debug("enter cfs_fuse_rename from %s to %s", from, to); | |
231 | ||
232 | int ret = -EACCES; | |
233 | ||
234 | char *sub_from = NULL; | |
235 | cfs_plug_t *plug_from = find_plug(from, &sub_from); | |
236 | ||
237 | char *sub_to = NULL; | |
238 | cfs_plug_t *plug_to = find_plug(to, &sub_to); | |
239 | ||
240 | if (!plug_from || !plug_to || plug_from != plug_to) | |
241 | goto ret; | |
242 | ||
243 | if (plug_from->ops && plug_from->ops->rename && sub_from && sub_to) | |
244 | ret = plug_from->ops->rename(plug_from, sub_from, sub_to); | |
245 | ||
246 | ret: | |
247 | cfs_debug("leave cfs_fuse_rename from %s to %s (%d)", from, to, ret); | |
248 | ||
249 | if (sub_from) | |
250 | g_free(sub_from); | |
251 | ||
252 | if (sub_to) | |
253 | g_free(sub_to); | |
254 | ||
255 | return ret; | |
256 | } | |
257 | ||
258 | static int cfs_fuse_open(const char *path, struct fuse_file_info *fi) | |
259 | { | |
260 | cfs_debug("enter cfs_fuse_open %s", path); | |
261 | ||
262 | fi->direct_io = 1; | |
263 | fi->keep_cache = 0; | |
264 | ||
265 | int ret = -EACCES; | |
266 | ||
267 | char *subpath = NULL; | |
268 | cfs_plug_t *plug = find_plug(path, &subpath); | |
269 | ||
270 | if (plug && plug->ops) { | |
271 | if ((subpath || !plug->ops->readdir) && plug->ops->open) { | |
272 | ret = plug->ops->open(plug, subpath ? subpath : "", fi); | |
273 | } | |
274 | } | |
275 | ||
276 | cfs_debug("leave cfs_fuse_open %s (%d)", path, ret); | |
277 | ||
278 | if (subpath) | |
279 | g_free(subpath); | |
280 | ||
281 | return ret; | |
282 | } | |
283 | ||
284 | static int cfs_fuse_read(const char *path, char *buf, size_t size, off_t offset, | |
285 | struct fuse_file_info *fi) | |
286 | { | |
287 | (void) fi; | |
288 | ||
289 | cfs_debug("enter cfs_fuse_read %s %lu %ld", path, size, offset); | |
290 | ||
291 | int ret = -EACCES; | |
292 | ||
293 | char *subpath = NULL; | |
294 | cfs_plug_t *plug = find_plug(path, &subpath); | |
295 | ||
296 | if (plug && plug->ops) { | |
297 | if ((subpath || !plug->ops->readdir) && plug->ops->read) | |
298 | ret = plug->ops->read(plug, subpath ? subpath : "", buf, size, offset, fi); | |
299 | } | |
300 | ||
301 | cfs_debug("leave cfs_fuse_read %s (%d)", path, ret); | |
302 | ||
303 | if (subpath) | |
304 | g_free(subpath); | |
305 | ||
306 | return ret; | |
307 | } | |
308 | ||
309 | static int cfs_fuse_write(const char *path, const char *buf, size_t size, | |
310 | off_t offset, struct fuse_file_info *fi) | |
311 | { | |
312 | (void) fi; | |
313 | ||
314 | cfs_debug("enter cfs_fuse_write %s %lu %ld", path, size, offset); | |
315 | ||
316 | int ret = -EACCES; | |
317 | ||
318 | char *subpath = NULL; | |
319 | cfs_plug_t *plug = find_plug(path, &subpath); | |
320 | ||
321 | if (plug && plug->ops) { | |
322 | if ((subpath || !plug->ops->readdir) && plug->ops->write) | |
323 | ret = plug->ops->write(plug, subpath ? subpath : "", | |
324 | buf, size, offset, fi); | |
325 | } | |
326 | ||
327 | cfs_debug("leave cfs_fuse_write %s (%d)", path, ret); | |
328 | ||
329 | if (subpath) | |
330 | g_free(subpath); | |
331 | ||
332 | return ret; | |
333 | } | |
334 | ||
335 | static int cfs_fuse_truncate(const char *path, off_t size) | |
336 | { | |
337 | cfs_debug("enter cfs_fuse_truncate %s %ld", path, size); | |
338 | ||
339 | int ret = -EACCES; | |
340 | ||
341 | char *subpath = NULL; | |
342 | cfs_plug_t *plug = find_plug(path, &subpath); | |
343 | ||
344 | if (plug && plug->ops) { | |
345 | if ((subpath || !plug->ops->readdir) && plug->ops->truncate) | |
346 | ret = plug->ops->truncate(plug, subpath ? subpath : "", size); | |
347 | } | |
348 | ||
349 | cfs_debug("leave cfs_fuse_truncate %s (%d)", path, ret); | |
350 | ||
351 | if (subpath) | |
352 | g_free(subpath); | |
353 | ||
354 | return ret; | |
355 | } | |
356 | ||
357 | static int cfs_fuse_create(const char *path, mode_t mode, struct fuse_file_info *fi) | |
358 | { | |
359 | cfs_debug("enter cfs_fuse_create %s", path); | |
360 | ||
361 | int ret = -EACCES; | |
362 | ||
363 | char *subpath = NULL; | |
364 | cfs_plug_t *plug = find_plug(path, &subpath); | |
365 | ||
366 | if (!plug) | |
367 | goto ret; | |
368 | ||
369 | if (subpath && plug->ops && plug->ops->create) | |
370 | ret = plug->ops->create(plug, subpath, mode, fi); | |
371 | ||
372 | ret: | |
373 | cfs_debug("leave cfs_fuse_create %s (%d)", path, ret); | |
374 | ||
375 | if (subpath) | |
376 | g_free(subpath); | |
377 | ||
378 | return ret; | |
379 | } | |
380 | ||
381 | static int cfs_fuse_unlink(const char *path) | |
382 | { | |
383 | cfs_debug("enter cfs_fuse_unlink %s", path); | |
384 | ||
385 | int ret = -EACCES; | |
386 | ||
387 | char *subpath = NULL; | |
388 | cfs_plug_t *plug = find_plug(path, &subpath); | |
389 | ||
390 | if (!plug) | |
391 | goto ret; | |
392 | ||
393 | if (subpath && plug->ops && plug->ops->unlink) | |
394 | ret = plug->ops->unlink(plug, subpath); | |
395 | ||
396 | ret: | |
397 | cfs_debug("leave cfs_fuse_unlink %s (%d)", path, ret); | |
398 | ||
399 | if (subpath) | |
400 | g_free(subpath); | |
401 | ||
402 | return ret; | |
403 | } | |
404 | ||
405 | static int cfs_fuse_readlink(const char *path, char *buf, size_t max) | |
406 | { | |
407 | cfs_debug("enter cfs_fuse_readlink %s", path); | |
408 | ||
409 | int ret = -EACCES; | |
410 | ||
411 | char *subpath = NULL; | |
412 | cfs_plug_t *plug = find_plug(path, &subpath); | |
413 | ||
414 | if (!plug) | |
415 | goto ret; | |
416 | ||
417 | if (plug->ops && plug->ops->readlink) | |
418 | ret = plug->ops->readlink(plug, subpath ? subpath : "", buf, max); | |
419 | ||
420 | ret: | |
421 | cfs_debug("leave cfs_fuse_readlink %s (%d)", path, ret); | |
422 | ||
423 | if (subpath) | |
424 | g_free(subpath); | |
425 | ||
426 | return ret; | |
427 | } | |
428 | ||
429 | static int cfs_fuse_utimens(const char *path, const struct timespec tv[2]) | |
430 | { | |
431 | cfs_debug("enter cfs_fuse_utimens %s", path); | |
432 | ||
433 | int ret = -EACCES; | |
434 | ||
435 | char *subpath = NULL; | |
436 | cfs_plug_t *plug = find_plug(path, &subpath); | |
437 | ||
438 | if (!plug) | |
439 | goto ret; | |
440 | ||
441 | if (plug->ops && plug->ops->utimens) | |
442 | ret = plug->ops->utimens(plug, subpath ? subpath : "", tv); | |
443 | ||
444 | ret: | |
445 | cfs_debug("leave cfs_fuse_utimens %s (%d)", path, ret); | |
446 | ||
447 | if (subpath) | |
448 | g_free(subpath); | |
449 | ||
450 | return ret; | |
451 | } | |
452 | ||
453 | static int cfs_fuse_statfs(const char *path, struct statvfs *stbuf) | |
454 | { | |
455 | g_return_val_if_fail(root_plug != NULL, PARAM_CHECK_ERRNO); | |
456 | ||
457 | cfs_debug("enter cfs_fuse_statfs %s", path); | |
458 | ||
459 | int ret = -EACCES; | |
460 | ||
461 | if (root_plug && root_plug->ops && root_plug->ops->statfs) | |
462 | ret = root_plug->ops->statfs(root_plug, "", stbuf); | |
463 | ||
464 | return ret; | |
465 | } | |
466 | ||
467 | static struct fuse_operations fuse_ops = { | |
468 | .getattr = cfs_fuse_getattr, | |
469 | .readdir = cfs_fuse_readdir, | |
470 | .mkdir = cfs_fuse_mkdir, | |
471 | .rmdir = cfs_fuse_rmdir, | |
472 | .rename = cfs_fuse_rename, | |
473 | .open = cfs_fuse_open, | |
474 | .read = cfs_fuse_read, | |
475 | .write = cfs_fuse_write, | |
476 | .truncate = cfs_fuse_truncate, | |
477 | .create = cfs_fuse_create, | |
478 | .unlink = cfs_fuse_unlink, | |
479 | .readlink = cfs_fuse_readlink, | |
480 | .utimens = cfs_fuse_utimens, | |
481 | .statfs = cfs_fuse_statfs, | |
482 | .init = cfs_fuse_init | |
483 | }; | |
484 | ||
485 | static char * | |
486 | create_dot_version_cb(cfs_plug_t *plug) | |
487 | { | |
488 | GString *outbuf = g_string_new(NULL); | |
489 | char *data = NULL; | |
490 | ||
491 | if (cfs_create_version_msg(outbuf) == 0) { | |
492 | data = outbuf->str; | |
493 | g_string_free(outbuf, FALSE); | |
494 | } else { | |
495 | g_string_free(outbuf, TRUE); | |
496 | } | |
497 | ||
498 | return data; | |
499 | } | |
500 | ||
501 | static char * | |
502 | create_dot_members_cb(cfs_plug_t *plug) | |
503 | { | |
504 | GString *outbuf = g_string_new(NULL); | |
505 | char *data = NULL; | |
506 | ||
507 | if (cfs_create_memberlist_msg(outbuf) == 0) { | |
508 | data = outbuf->str; | |
509 | g_string_free(outbuf, FALSE); | |
510 | } else { | |
511 | g_string_free(outbuf, TRUE); | |
512 | } | |
513 | ||
514 | return data; | |
515 | } | |
516 | ||
517 | static char * | |
518 | create_dot_vmlist_cb(cfs_plug_t *plug) | |
519 | { | |
520 | GString *outbuf = g_string_new(NULL); | |
521 | char *data = NULL; | |
522 | ||
523 | if (cfs_create_vmlist_msg(outbuf) == 0) { | |
524 | data = outbuf->str; | |
525 | g_string_free(outbuf, FALSE); | |
526 | } else { | |
527 | g_string_free(outbuf, TRUE); | |
528 | } | |
529 | ||
530 | return data; | |
531 | } | |
532 | ||
533 | static char * | |
534 | create_dot_rrd_cb(cfs_plug_t *plug) | |
535 | { | |
536 | GString *outbuf = g_string_new(NULL); | |
537 | ||
538 | cfs_rrd_dump(outbuf); | |
539 | char *data = outbuf->str; | |
540 | g_string_free(outbuf, FALSE); | |
541 | ||
542 | return data; | |
543 | } | |
544 | ||
545 | static char * | |
546 | create_dot_clusterlog_cb(cfs_plug_t *plug) | |
547 | { | |
548 | GString *outbuf = g_string_new(NULL); | |
549 | ||
550 | cfs_cluster_log_dump(outbuf, NULL, 50); | |
551 | char *data = outbuf->str; | |
552 | g_string_free(outbuf, FALSE); | |
553 | ||
554 | return data; | |
555 | } | |
556 | ||
557 | static char * | |
558 | read_debug_setting_cb(cfs_plug_t *plug) | |
559 | { | |
560 | return g_strdup_printf("%d\n", !!cfs.debug); | |
561 | } | |
562 | ||
65420fb3 DM |
563 | static void |
564 | my_qb_log_filter(struct qb_log_callsite *cs) | |
565 | { | |
566 | int32_t priority = cfs.debug ? LOG_DEBUG : LOG_INFO; | |
567 | ||
568 | if (qb_bit_is_set(cs->tags, QB_LOG_TAG_LIBQB_MSG_BIT)) { | |
569 | if (cs->priority <= (cfs.debug ? priority : LOG_WARNING)) { | |
570 | qb_bit_set(cs->targets, QB_LOG_SYSLOG); | |
571 | } else { | |
572 | qb_bit_clear(cs->targets, QB_LOG_SYSLOG); | |
573 | } | |
574 | if (cs->priority <= priority) { | |
575 | qb_bit_set(cs->targets, QB_LOG_STDERR); | |
576 | } else { | |
577 | qb_bit_clear(cs->targets, QB_LOG_STDERR); | |
578 | } | |
579 | } else { | |
580 | if (cs->priority <= priority) { | |
581 | qb_bit_set(cs->targets, QB_LOG_SYSLOG); | |
582 | qb_bit_set(cs->targets, QB_LOG_STDERR); | |
583 | } else { | |
584 | qb_bit_clear(cs->targets, QB_LOG_SYSLOG); | |
585 | qb_bit_clear(cs->targets, QB_LOG_STDERR); | |
586 | } | |
587 | } | |
588 | } | |
589 | ||
64405e32 DM |
590 | static void |
591 | update_qb_log_settings(void) | |
592 | { | |
65420fb3 | 593 | qb_log_filter_fn_set(my_qb_log_filter); |
92bc48dd | 594 | |
64405e32 DM |
595 | if (cfs.debug) { |
596 | qb_log_format_set(QB_LOG_SYSLOG, "[%g] %p: %b (%f:%l:%n)"); | |
597 | qb_log_format_set(QB_LOG_STDERR, "[%g] %p: %b (%f:%l:%n)"); | |
64405e32 DM |
598 | } else { |
599 | qb_log_format_set(QB_LOG_SYSLOG, "[%g] %p: %b"); | |
600 | qb_log_format_set(QB_LOG_STDERR, "[%g] %p: %b"); | |
64405e32 DM |
601 | } |
602 | } | |
603 | ||
65420fb3 DM |
604 | static int |
605 | write_debug_setting_cb( | |
fe000966 DM |
606 | cfs_plug_t *plug, |
607 | const char *buf, | |
608 | size_t size) | |
609 | { | |
610 | int res = -EIO; | |
611 | ||
612 | if (size < 2) | |
613 | return res; | |
614 | ||
615 | if (strncmp(buf, "0\n", 2) == 0) { | |
616 | if (cfs.debug) { | |
617 | cfs_message("disable debug mode"); | |
618 | cfs.debug = 0; | |
64405e32 | 619 | update_qb_log_settings(); |
fe000966 DM |
620 | } |
621 | return 2; | |
622 | } else if (strncmp(buf, "1\n", 2) == 0) { | |
623 | if (!cfs.debug) { | |
fe000966 | 624 | cfs.debug = 1; |
64405e32 DM |
625 | update_qb_log_settings(); |
626 | cfs_message("enable debug mode"); | |
fe000966 DM |
627 | } |
628 | return 2; | |
629 | } | |
630 | ||
631 | return res; | |
632 | } | |
633 | ||
fe000966 DM |
634 | static void |
635 | create_symlinks(cfs_plug_base_t *bplug, const char *nodename) | |
636 | { | |
637 | g_return_if_fail(bplug != NULL); | |
638 | g_return_if_fail(nodename != NULL); | |
639 | ||
640 | char *lnktarget = g_strdup_printf("nodes/%s", nodename); | |
641 | cfs_plug_link_t *lnk = cfs_plug_link_new("local", lnktarget); | |
642 | g_free(lnktarget); | |
643 | cfs_plug_base_insert(bplug, (cfs_plug_t*)lnk); | |
644 | ||
645 | lnktarget = g_strdup_printf("nodes/%s/qemu-server", nodename); | |
646 | lnk = cfs_plug_link_new("qemu-server", lnktarget); | |
647 | g_free(lnktarget); | |
648 | cfs_plug_base_insert(bplug, (cfs_plug_t*)lnk); | |
649 | ||
650 | lnktarget = g_strdup_printf("nodes/%s/openvz", nodename); | |
651 | lnk = cfs_plug_link_new("openvz", lnktarget); | |
652 | g_free(lnktarget); | |
653 | cfs_plug_base_insert(bplug, (cfs_plug_t*)lnk); | |
654 | ||
655 | cfs_plug_func_t *fplug = cfs_plug_func_new(".version", 0440, create_dot_version_cb, NULL); | |
656 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
657 | ||
658 | fplug = cfs_plug_func_new(".members", 0440, create_dot_members_cb, NULL); | |
659 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
660 | ||
661 | fplug = cfs_plug_func_new(".vmlist", 0440, create_dot_vmlist_cb, NULL); | |
662 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
663 | ||
664 | fplug = cfs_plug_func_new(".rrd", 0440, create_dot_rrd_cb, NULL); | |
665 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
666 | ||
667 | fplug = cfs_plug_func_new(".clusterlog", 0440, create_dot_clusterlog_cb, NULL); | |
668 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
669 | ||
670 | fplug = cfs_plug_func_new(".debug", 0640, read_debug_setting_cb, write_debug_setting_cb); | |
671 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
672 | ||
673 | ||
674 | } | |
675 | ||
676 | static char * | |
677 | lookup_node_ip(const char *nodename) | |
678 | { | |
679 | struct addrinfo *ainfo; | |
680 | struct addrinfo ahints; | |
681 | memset(&ahints, 0, sizeof(ahints)); | |
682 | ||
683 | if (getaddrinfo(nodename, NULL, &ahints, &ainfo)) | |
684 | return NULL; | |
685 | ||
686 | if (ainfo->ai_family == AF_INET) { | |
687 | char buf[INET6_ADDRSTRLEN]; | |
688 | struct sockaddr_in *sa = (struct sockaddr_in *)ainfo->ai_addr; | |
689 | inet_ntop(ainfo->ai_family, &sa->sin_addr, buf, sizeof(buf)); | |
690 | if (strncmp(buf, "127.", 4) != 0) { | |
691 | return g_strdup(buf); | |
692 | } | |
693 | } | |
694 | ||
695 | // ipv6 support ? | |
696 | ||
697 | return NULL; | |
698 | } | |
64405e32 DM |
699 | |
700 | static const char* | |
701 | log_tags_stringify(uint32_t tags) { | |
702 | if (qb_bit_is_set(tags, QB_LOG_TAG_LIBQB_MSG_BIT)) { | |
703 | return "libqb"; | |
704 | } else { | |
705 | GQuark quark = tags; | |
706 | const char *domain = g_quark_to_string(quark); | |
707 | if (domain != NULL) { | |
708 | return domain; | |
709 | } else { | |
710 | return "main"; | |
711 | } | |
712 | } | |
713 | } | |
714 | ||
fe000966 DM |
715 | int main(int argc, char *argv[]) |
716 | { | |
717 | int ret = -1; | |
718 | int lockfd = -1; | |
719 | ||
720 | gboolean foreground = FALSE; | |
721 | gboolean force_local_mode = FALSE; | |
722 | gboolean wrote_pidfile = FALSE; | |
723 | memdb_t *memdb = NULL; | |
724 | dfsm_t *dcdb = NULL; | |
725 | dfsm_t *status_fsm = NULL; | |
726 | ||
64405e32 | 727 | qb_log_init("pmxcfs", LOG_DAEMON, LOG_DEBUG); |
65420fb3 DM |
728 | /* remove default filter */ |
729 | qb_log_filter_ctl(QB_LOG_SYSLOG, QB_LOG_FILTER_REMOVE, | |
730 | QB_LOG_FILTER_FILE, "*", LOG_DEBUG); | |
731 | ||
64405e32 DM |
732 | qb_log_tags_stringify_fn_set(log_tags_stringify); |
733 | ||
734 | qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE); | |
64405e32 DM |
735 | |
736 | update_qb_log_settings(); | |
fe000966 DM |
737 | |
738 | g_set_print_handler(glib_print_handler); | |
739 | g_set_printerr_handler(glib_print_handler); | |
740 | g_log_set_default_handler(glib_log_handler, NULL); | |
741 | ||
742 | GOptionContext *context; | |
fe000966 DM |
743 | |
744 | GOptionEntry entries[] = { | |
745 | { "debug", 'd', 0, G_OPTION_ARG_NONE, &cfs.debug, "Turn on debug messages", NULL }, | |
746 | { "foreground", 'f', 0, G_OPTION_ARG_NONE, &foreground, "Do not daemonize server", NULL }, | |
747 | { "local", 'l', 0, G_OPTION_ARG_NONE, &force_local_mode, | |
748 | "Force local mode (ignore cluster.conf, force quorum)", NULL }, | |
fe000966 DM |
749 | { NULL }, |
750 | }; | |
751 | ||
752 | context = g_option_context_new (""); | |
753 | g_option_context_add_main_entries (context, entries, NULL); | |
754 | ||
755 | GError *err = NULL; | |
756 | if (!g_option_context_parse (context, &argc, &argv, &err)) | |
757 | { | |
758 | cfs_critical("option parsing failed: %s", err->message); | |
759 | g_error_free (err); | |
64405e32 | 760 | qb_log_fini(); |
fe000966 DM |
761 | exit (1); |
762 | } | |
763 | g_option_context_free(context); | |
764 | ||
765 | if (optind < argc) { | |
766 | cfs_critical("too many arguments"); | |
64405e32 | 767 | qb_log_fini(); |
fe000966 DM |
768 | exit(-1); |
769 | } | |
64405e32 DM |
770 | |
771 | if (cfs.debug) { | |
772 | update_qb_log_settings(); | |
773 | } | |
774 | ||
fe000966 DM |
775 | struct utsname utsname; |
776 | if (uname(&utsname) != 0) { | |
777 | cfs_critical("Unable to read local node name"); | |
64405e32 | 778 | qb_log_fini(); |
fe000966 DM |
779 | exit (-1); |
780 | } | |
781 | ||
782 | for (int i=0; i < sizeof(utsname.nodename); i++) { | |
783 | if (utsname.nodename[i] =='.') utsname.nodename[i] = 0; | |
784 | } | |
785 | ||
786 | cfs.nodename = g_strdup(utsname.nodename); | |
787 | ||
788 | if (!(cfs.ip = lookup_node_ip(cfs.nodename))) { | |
789 | cfs_critical("Unable to get local IP address"); | |
64405e32 | 790 | qb_log_fini(); |
fe000966 DM |
791 | exit(-1); |
792 | } | |
793 | ||
794 | struct group *www_data = getgrnam("www-data"); | |
795 | if (!www_data) { | |
796 | cfs_critical("Unable to get www-data group ID"); | |
64405e32 | 797 | qb_log_fini(); |
fe000966 DM |
798 | exit (-1); |
799 | } | |
800 | cfs.gid = www_data->gr_gid; | |
801 | ||
fe000966 DM |
802 | umask(027); |
803 | ||
804 | mkdir(VARLIBDIR, 0755); | |
805 | ||
806 | if ((lockfd = open(LOCKFILE, O_RDWR|O_CREAT|O_APPEND)) == -1) { | |
807 | cfs_critical("unable to create lock '%s': %s", LOCKFILE, strerror (errno)); | |
808 | goto err; | |
809 | } | |
810 | ||
811 | for (int i = 10; i >= 0; i--) { | |
812 | if (flock(lockfd, LOCK_EX|LOCK_NB) != 0) { | |
813 | if (!i) { | |
814 | cfs_critical("unable to aquire pmxcfs lock: %s", strerror (errno)); | |
815 | goto err; | |
816 | } | |
817 | if (i == 10) | |
818 | cfs_message("unable to aquire pmxcfs lock - trying again"); | |
819 | ||
820 | sleep(1); | |
821 | } | |
822 | } | |
823 | ||
824 | cfs_status_init(); | |
825 | ||
826 | gboolean create = !g_file_test(DBFILENAME, G_FILE_TEST_EXISTS); | |
827 | ||
828 | if (!(memdb = memdb_open (DBFILENAME))) { | |
829 | cfs_critical("memdb_open failed - unable to open database '%s'", DBFILENAME); | |
830 | goto err; | |
831 | } | |
832 | ||
833 | // automatically import cluster.conf from host | |
834 | if (create && !force_local_mode) { | |
835 | char *cdata = NULL; | |
836 | gsize clen = 0; | |
837 | if (g_file_get_contents(HOST_CLUSTER_CONF_FN, &cdata, &clen, NULL)) { | |
838 | ||
839 | guint32 mtime = time(NULL); | |
840 | ||
841 | memdb_create(memdb, "/cluster.conf", 0, mtime); | |
842 | if (memdb_write(memdb, "/cluster.conf", 0, mtime, cdata, clen, 0, 1) < 0) { | |
843 | cfs_critical("memdb_write failed - unable to import cluster.conf"); | |
844 | goto err; | |
845 | } | |
846 | } | |
847 | } | |
848 | ||
849 | // does cluster.conf exist? | |
850 | gpointer conf_data = NULL; | |
851 | int len = memdb_read(memdb, "cluster.conf", &conf_data); | |
852 | if (len >= 0) { | |
853 | if (force_local_mode) { | |
854 | cfs_message("forcing local mode (althought cluster.conf exists)"); | |
855 | cfs_set_quorate(1, TRUE); | |
856 | } else { | |
857 | if (!(dcdb = dcdb_new(memdb))) | |
858 | goto err; | |
859 | dcdb_sync_cluster_conf(memdb, 1); | |
860 | } | |
861 | } else { | |
862 | cfs_debug("using local mode (cluster.conf does not exist)"); | |
863 | cfs_set_quorate(1, TRUE); | |
864 | } | |
865 | if (conf_data) g_free(conf_data); | |
866 | ||
867 | cfs_plug_memdb_t *config = cfs_plug_memdb_new("memdb", memdb, dcdb); | |
868 | ||
869 | cfs_plug_base_t *bplug = cfs_plug_base_new("", (cfs_plug_t *)config); | |
870 | ||
871 | create_symlinks(bplug, cfs.nodename); | |
872 | ||
873 | root_plug = (cfs_plug_t *)bplug; | |
874 | ||
875 | system("umount -f " CFSDIR " >/dev/null 2>&1"); | |
876 | ||
27b69f59 DM |
877 | mkdir(CFSDIR, 0755); |
878 | ||
fe000966 DM |
879 | char *fa[] = { "-f", "-odefault_permissions", "-oallow_other", NULL}; |
880 | ||
881 | struct fuse_args fuse_args = FUSE_ARGS_INIT(sizeof (fa)/sizeof(gpointer) - 1, fa); | |
882 | ||
883 | struct fuse_chan *fuse_chan = fuse_mount(CFSDIR, &fuse_args); | |
884 | if (!fuse_chan) { | |
885 | cfs_critical("fuse_mount error: %s", strerror(errno)); | |
886 | goto err; | |
887 | } | |
888 | ||
889 | if (!(fuse = fuse_new(fuse_chan, &fuse_args, &fuse_ops, sizeof(fuse_ops), NULL))) { | |
890 | cfs_critical("fuse_new error: %s", strerror(errno)); | |
891 | goto err; | |
892 | } | |
893 | ||
894 | fuse_set_signal_handlers(fuse_get_session(fuse)); | |
895 | ||
fe000966 DM |
896 | if (!foreground) { |
897 | pid_t cpid = fork(); | |
898 | ||
899 | if (cpid == -1) { | |
900 | cfs_critical("failed to daemonize program - %s", strerror (errno)); | |
901 | goto err; | |
902 | } else if (cpid) { | |
903 | write_pidfile(cpid); | |
64405e32 | 904 | qb_log_fini(); |
fe000966 DM |
905 | _exit (0); |
906 | } else { | |
907 | int nullfd; | |
908 | ||
909 | chroot("/"); | |
910 | ||
911 | if ((nullfd = open("/dev/null", O_RDWR, 0)) != -1) { | |
912 | dup2(nullfd, 0); | |
913 | dup2(nullfd, 1); | |
914 | dup2(nullfd, 2); | |
915 | if (nullfd > 2) | |
916 | close (nullfd); | |
917 | } | |
918 | ||
919 | // do not print to the console after this point | |
64405e32 DM |
920 | qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_FALSE); |
921 | ||
fe000966 DM |
922 | setsid(); |
923 | } | |
924 | } else { | |
925 | write_pidfile(getpid()); | |
926 | } | |
927 | ||
928 | wrote_pidfile = TRUE; | |
929 | ||
930 | cfs_loop_t *corosync_loop = cfs_loop_new(fuse); | |
931 | ||
932 | cfs_service_t *service_quorum = NULL; | |
933 | cfs_service_t *service_confdb = NULL; | |
934 | cfs_service_t *service_dcdb = NULL; | |
935 | cfs_service_t *service_status = NULL; | |
936 | ||
937 | if (dcdb) { | |
938 | ||
939 | service_quorum = service_quorum_new(); | |
940 | ||
941 | cfs_loop_add_service(corosync_loop, service_quorum, QB_LOOP_HIGH); | |
942 | ||
943 | service_confdb = service_confdb_new(); | |
944 | ||
945 | cfs_loop_add_service(corosync_loop, service_confdb, QB_LOOP_MED); | |
946 | ||
947 | service_dcdb = service_dfsm_new(dcdb); | |
948 | cfs_service_set_timer(service_dcdb, DCDB_VERIFY_TIME); | |
949 | ||
950 | cfs_loop_add_service(corosync_loop, service_dcdb, QB_LOOP_MED); | |
951 | ||
952 | status_fsm = cfs_status_dfsm_new(); | |
953 | service_status = service_dfsm_new(status_fsm); | |
954 | ||
955 | cfs_loop_add_service(corosync_loop, service_status, QB_LOOP_LOW); | |
956 | ||
957 | } | |
958 | ||
959 | cfs_loop_start_worker(corosync_loop); | |
960 | ||
961 | server_start(memdb); | |
962 | ||
963 | ret = fuse_loop_mt(fuse); | |
964 | ||
965 | cfs_message("teardown filesystem"); | |
966 | ||
967 | server_stop(); | |
968 | ||
969 | fuse_unmount(CFSDIR, fuse_chan); | |
970 | ||
971 | fuse_destroy(fuse); | |
972 | ||
973 | cfs_debug("set stop event loop flag"); | |
974 | ||
975 | cfs_loop_stop_worker(corosync_loop); | |
976 | ||
977 | cfs_loop_destroy(corosync_loop); | |
978 | ||
979 | cfs_debug("worker finished"); | |
980 | ||
981 | if (service_dcdb) | |
982 | service_dfsm_destroy(service_dcdb); | |
983 | ||
984 | if (service_confdb) | |
985 | service_confdb_destroy(service_confdb); | |
986 | ||
987 | if (service_quorum) | |
988 | service_quorum_destroy(service_quorum); | |
989 | ||
990 | if (service_status) | |
991 | service_dfsm_destroy(service_status); | |
992 | ||
993 | sleep(1); /* do not restart too fast */ | |
994 | ret: | |
995 | ||
996 | if (status_fsm) | |
997 | dfsm_destroy(status_fsm); | |
998 | ||
999 | if (dcdb) | |
1000 | dfsm_destroy(dcdb); | |
1001 | ||
1002 | if (memdb) | |
1003 | memdb_close(memdb); | |
1004 | ||
1005 | if (wrote_pidfile) | |
1006 | unlink(CFS_PID_FN); | |
1007 | ||
1008 | cfs_message("exit proxmox configuration filesystem (%d)", ret); | |
1009 | ||
1010 | cfs_status_cleanup(); | |
1011 | ||
64405e32 DM |
1012 | qb_log_fini(); |
1013 | ||
fe000966 DM |
1014 | exit(ret); |
1015 | ||
1016 | err: | |
1017 | goto ret; | |
1018 | } |