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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> | |
b1f92b4e | 44 | |
fe000966 DM |
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 | ||
b1f92b4e | 62 | #define CFSDIR "/etc/pve" |
fe000966 DM |
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 | ||
b1f92b4e | 111 | if (subpath && subpath[0]) |
fe000966 DM |
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); | |
b1f92b4e | 132 | |
fe000966 DM |
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 | ||
42789cda | 138 | if (path_is_private(path)) { |
fe000966 | 139 | stbuf->st_mode &= 0777700; |
42789cda DM |
140 | } else { |
141 | if (S_ISDIR(stbuf->st_mode) || S_ISLNK(stbuf->st_mode)) { | |
142 | stbuf->st_mode &= 0777755; // access for other users | |
143 | } else { | |
144 | if (path_is_lxc_conf(path)) { | |
145 | stbuf->st_mode &= 0777755; // access for other users | |
146 | } else { | |
147 | stbuf->st_mode &= 0777750; // no access for other users | |
148 | } | |
149 | } | |
150 | } | |
fe000966 DM |
151 | } |
152 | ||
153 | cfs_debug("leave cfs_fuse_getattr %s (%d)", path, ret); | |
154 | ||
155 | if (subpath) | |
156 | g_free(subpath); | |
157 | ||
158 | return ret; | |
159 | ||
160 | } | |
161 | ||
162 | static int cfs_fuse_readdir(const char *path, void *buf, fuse_fill_dir_t filler, | |
163 | off_t offset, struct fuse_file_info *fi) | |
164 | { | |
165 | (void) offset; | |
166 | (void) fi; | |
167 | ||
168 | cfs_debug("enter cfs_fuse_readdir %s", path); | |
169 | ||
170 | int ret = -EACCES; | |
171 | ||
172 | char *subpath = NULL; | |
173 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e | 174 | |
fe000966 DM |
175 | if (!plug) |
176 | goto ret; | |
177 | ||
178 | if (plug->ops && plug->ops->readdir) | |
179 | ret = plug->ops->readdir(plug, subpath ? subpath : "", buf, filler, 0, fi); | |
180 | ret: | |
181 | cfs_debug("leave cfs_fuse_readdir %s (%d)", path, ret); | |
b1f92b4e | 182 | |
fe000966 DM |
183 | if (subpath) |
184 | g_free(subpath); | |
b1f92b4e | 185 | |
fe000966 DM |
186 | return ret; |
187 | } | |
188 | ||
2927674d SP |
189 | static int cfs_fuse_chmod(const char *path, mode_t mode) |
190 | { | |
191 | int ret = -EPERM; | |
192 | ||
193 | cfs_debug("enter cfs_fuse_chmod %s", path); | |
194 | ||
195 | mode_t allowed_mode = (S_IRUSR | S_IWUSR); | |
196 | if (!path_is_private(path)) | |
197 | allowed_mode |= (S_IRGRP); | |
198 | ||
199 | // allow only setting our supported modes (0600 for priv, 0640 for rest) | |
55910ea1 DC |
200 | // mode has additional bits set, which we ignore; see stat(2) |
201 | if ((mode & ALLPERMS) == allowed_mode) | |
2927674d SP |
202 | ret = 0; |
203 | ||
204 | cfs_debug("leave cfs_fuse_chmod %s (%d) mode: %o", path, ret, (int)mode); | |
205 | ||
206 | return ret; | |
207 | } | |
208 | ||
209 | static int cfs_fuse_chown(const char *path, uid_t user, gid_t group) | |
210 | { | |
211 | int ret = -EPERM; | |
212 | ||
213 | cfs_debug("enter cfs_fuse_chown %s", path); | |
214 | ||
215 | // we get -1 if no change should be made | |
216 | if ((user == 0 || user == -1) && (group == cfs.gid || group == -1)) | |
217 | ret = 0; | |
218 | ||
219 | cfs_debug("leave cfs_fuse_chown %s (%d) (uid: %d; gid: %d)", path, ret, user, group); | |
220 | ||
221 | return ret; | |
222 | } | |
223 | ||
fe000966 DM |
224 | static int cfs_fuse_mkdir(const char *path, mode_t mode) |
225 | { | |
226 | cfs_debug("enter cfs_fuse_mkdir %s", path); | |
227 | ||
228 | int ret = -EACCES; | |
229 | ||
230 | char *subpath = NULL; | |
231 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e | 232 | |
fe000966 DM |
233 | if (!plug) |
234 | goto ret; | |
235 | ||
236 | if (subpath && plug->ops && plug->ops->mkdir) | |
237 | ret = plug->ops->mkdir(plug, subpath, mode); | |
238 | ||
239 | ret: | |
240 | cfs_debug("leave cfs_fuse_mkdir %s (%d)", path, ret); | |
241 | ||
242 | if (subpath) | |
243 | g_free(subpath); | |
244 | ||
245 | return ret; | |
246 | } | |
247 | ||
248 | static int cfs_fuse_rmdir(const char *path) | |
249 | { | |
250 | cfs_debug("enter cfs_fuse_rmdir %s", path); | |
251 | ||
252 | int ret = -EACCES; | |
253 | ||
254 | char *subpath = NULL; | |
255 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e | 256 | |
fe000966 DM |
257 | if (!plug) |
258 | goto ret; | |
259 | ||
260 | if (subpath && plug->ops && plug->ops->rmdir) | |
261 | ret = plug->ops->rmdir(plug, subpath); | |
262 | ||
263 | ret: | |
264 | cfs_debug("leave cfs_fuse_rmdir %s (%d)", path, ret); | |
265 | ||
266 | if (subpath) | |
267 | g_free(subpath); | |
268 | ||
269 | return ret; | |
270 | } | |
271 | ||
272 | static int cfs_fuse_rename(const char *from, const char *to) | |
273 | { | |
274 | cfs_debug("enter cfs_fuse_rename from %s to %s", from, to); | |
275 | ||
276 | int ret = -EACCES; | |
277 | ||
278 | char *sub_from = NULL; | |
279 | cfs_plug_t *plug_from = find_plug(from, &sub_from); | |
280 | ||
281 | char *sub_to = NULL; | |
282 | cfs_plug_t *plug_to = find_plug(to, &sub_to); | |
283 | ||
284 | if (!plug_from || !plug_to || plug_from != plug_to) | |
285 | goto ret; | |
286 | ||
287 | if (plug_from->ops && plug_from->ops->rename && sub_from && sub_to) | |
288 | ret = plug_from->ops->rename(plug_from, sub_from, sub_to); | |
289 | ||
290 | ret: | |
291 | cfs_debug("leave cfs_fuse_rename from %s to %s (%d)", from, to, ret); | |
292 | ||
293 | if (sub_from) | |
294 | g_free(sub_from); | |
295 | ||
296 | if (sub_to) | |
297 | g_free(sub_to); | |
298 | ||
299 | return ret; | |
300 | } | |
301 | ||
302 | static int cfs_fuse_open(const char *path, struct fuse_file_info *fi) | |
303 | { | |
304 | cfs_debug("enter cfs_fuse_open %s", path); | |
305 | ||
306 | fi->direct_io = 1; | |
307 | fi->keep_cache = 0; | |
308 | ||
309 | int ret = -EACCES; | |
310 | ||
311 | char *subpath = NULL; | |
312 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e DM |
313 | |
314 | if (plug && plug->ops) { | |
fe000966 DM |
315 | if ((subpath || !plug->ops->readdir) && plug->ops->open) { |
316 | ret = plug->ops->open(plug, subpath ? subpath : "", fi); | |
317 | } | |
318 | } | |
319 | ||
320 | cfs_debug("leave cfs_fuse_open %s (%d)", path, ret); | |
321 | ||
322 | if (subpath) | |
323 | g_free(subpath); | |
324 | ||
325 | return ret; | |
326 | } | |
327 | ||
328 | static int cfs_fuse_read(const char *path, char *buf, size_t size, off_t offset, | |
329 | struct fuse_file_info *fi) | |
330 | { | |
331 | (void) fi; | |
332 | ||
e5a5a3ea | 333 | cfs_debug("enter cfs_fuse_read %s %zu %jd", path, size, offset); |
fe000966 DM |
334 | |
335 | int ret = -EACCES; | |
336 | ||
337 | char *subpath = NULL; | |
338 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e DM |
339 | |
340 | if (plug && plug->ops) { | |
fe000966 DM |
341 | if ((subpath || !plug->ops->readdir) && plug->ops->read) |
342 | ret = plug->ops->read(plug, subpath ? subpath : "", buf, size, offset, fi); | |
343 | } | |
344 | ||
345 | cfs_debug("leave cfs_fuse_read %s (%d)", path, ret); | |
346 | ||
347 | if (subpath) | |
348 | g_free(subpath); | |
349 | ||
350 | return ret; | |
351 | } | |
352 | ||
353 | static int cfs_fuse_write(const char *path, const char *buf, size_t size, | |
354 | off_t offset, struct fuse_file_info *fi) | |
355 | { | |
356 | (void) fi; | |
357 | ||
e5a5a3ea | 358 | cfs_debug("enter cfs_fuse_write %s %zu %jd", path, size, offset); |
fe000966 DM |
359 | |
360 | int ret = -EACCES; | |
361 | ||
362 | char *subpath = NULL; | |
363 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e DM |
364 | |
365 | if (plug && plug->ops) { | |
fe000966 | 366 | if ((subpath || !plug->ops->readdir) && plug->ops->write) |
b1f92b4e | 367 | ret = plug->ops->write(plug, subpath ? subpath : "", |
fe000966 DM |
368 | buf, size, offset, fi); |
369 | } | |
b1f92b4e | 370 | |
fe000966 DM |
371 | cfs_debug("leave cfs_fuse_write %s (%d)", path, ret); |
372 | ||
373 | if (subpath) | |
374 | g_free(subpath); | |
375 | ||
376 | return ret; | |
377 | } | |
378 | ||
379 | static int cfs_fuse_truncate(const char *path, off_t size) | |
380 | { | |
e5a5a3ea | 381 | cfs_debug("enter cfs_fuse_truncate %s %jd", path, size); |
fe000966 DM |
382 | |
383 | int ret = -EACCES; | |
384 | ||
385 | char *subpath = NULL; | |
386 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e DM |
387 | |
388 | if (plug && plug->ops) { | |
fe000966 DM |
389 | if ((subpath || !plug->ops->readdir) && plug->ops->truncate) |
390 | ret = plug->ops->truncate(plug, subpath ? subpath : "", size); | |
391 | } | |
392 | ||
393 | cfs_debug("leave cfs_fuse_truncate %s (%d)", path, ret); | |
394 | ||
395 | if (subpath) | |
396 | g_free(subpath); | |
397 | ||
398 | return ret; | |
399 | } | |
400 | ||
401 | static int cfs_fuse_create(const char *path, mode_t mode, struct fuse_file_info *fi) | |
402 | { | |
403 | cfs_debug("enter cfs_fuse_create %s", path); | |
404 | ||
405 | int ret = -EACCES; | |
406 | ||
407 | char *subpath = NULL; | |
408 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e | 409 | |
fe000966 DM |
410 | if (!plug) |
411 | goto ret; | |
412 | ||
413 | if (subpath && plug->ops && plug->ops->create) | |
414 | ret = plug->ops->create(plug, subpath, mode, fi); | |
415 | ||
416 | ret: | |
417 | cfs_debug("leave cfs_fuse_create %s (%d)", path, ret); | |
418 | ||
419 | if (subpath) | |
420 | g_free(subpath); | |
421 | ||
422 | return ret; | |
423 | } | |
424 | ||
425 | static int cfs_fuse_unlink(const char *path) | |
426 | { | |
427 | cfs_debug("enter cfs_fuse_unlink %s", path); | |
428 | ||
429 | int ret = -EACCES; | |
430 | ||
431 | char *subpath = NULL; | |
432 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e | 433 | |
fe000966 DM |
434 | if (!plug) |
435 | goto ret; | |
436 | ||
437 | if (subpath && plug->ops && plug->ops->unlink) | |
438 | ret = plug->ops->unlink(plug, subpath); | |
439 | ||
440 | ret: | |
441 | cfs_debug("leave cfs_fuse_unlink %s (%d)", path, ret); | |
442 | ||
443 | if (subpath) | |
444 | g_free(subpath); | |
b1f92b4e | 445 | |
fe000966 DM |
446 | return ret; |
447 | } | |
448 | ||
449 | static int cfs_fuse_readlink(const char *path, char *buf, size_t max) | |
450 | { | |
451 | cfs_debug("enter cfs_fuse_readlink %s", path); | |
452 | ||
453 | int ret = -EACCES; | |
454 | ||
455 | char *subpath = NULL; | |
456 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e | 457 | |
fe000966 DM |
458 | if (!plug) |
459 | goto ret; | |
460 | ||
461 | if (plug->ops && plug->ops->readlink) | |
462 | ret = plug->ops->readlink(plug, subpath ? subpath : "", buf, max); | |
b1f92b4e | 463 | |
fe000966 DM |
464 | ret: |
465 | cfs_debug("leave cfs_fuse_readlink %s (%d)", path, ret); | |
466 | ||
467 | if (subpath) | |
468 | g_free(subpath); | |
469 | ||
470 | return ret; | |
471 | } | |
472 | ||
473 | static int cfs_fuse_utimens(const char *path, const struct timespec tv[2]) | |
474 | { | |
475 | cfs_debug("enter cfs_fuse_utimens %s", path); | |
476 | ||
477 | int ret = -EACCES; | |
478 | ||
479 | char *subpath = NULL; | |
480 | cfs_plug_t *plug = find_plug(path, &subpath); | |
b1f92b4e | 481 | |
fe000966 DM |
482 | if (!plug) |
483 | goto ret; | |
484 | ||
485 | if (plug->ops && plug->ops->utimens) | |
486 | ret = plug->ops->utimens(plug, subpath ? subpath : "", tv); | |
b1f92b4e | 487 | |
fe000966 DM |
488 | ret: |
489 | cfs_debug("leave cfs_fuse_utimens %s (%d)", path, ret); | |
490 | ||
491 | if (subpath) | |
492 | g_free(subpath); | |
493 | ||
494 | return ret; | |
495 | } | |
496 | ||
497 | static int cfs_fuse_statfs(const char *path, struct statvfs *stbuf) | |
498 | { | |
499 | g_return_val_if_fail(root_plug != NULL, PARAM_CHECK_ERRNO); | |
500 | ||
501 | cfs_debug("enter cfs_fuse_statfs %s", path); | |
502 | ||
503 | int ret = -EACCES; | |
504 | ||
505 | if (root_plug && root_plug->ops && root_plug->ops->statfs) | |
506 | ret = root_plug->ops->statfs(root_plug, "", stbuf); | |
507 | ||
508 | return ret; | |
509 | } | |
510 | ||
511 | static struct fuse_operations fuse_ops = { | |
512 | .getattr = cfs_fuse_getattr, | |
513 | .readdir = cfs_fuse_readdir, | |
514 | .mkdir = cfs_fuse_mkdir, | |
515 | .rmdir = cfs_fuse_rmdir, | |
516 | .rename = cfs_fuse_rename, | |
517 | .open = cfs_fuse_open, | |
518 | .read = cfs_fuse_read, | |
519 | .write = cfs_fuse_write, | |
520 | .truncate = cfs_fuse_truncate, | |
521 | .create = cfs_fuse_create, | |
522 | .unlink = cfs_fuse_unlink, | |
523 | .readlink = cfs_fuse_readlink, | |
524 | .utimens = cfs_fuse_utimens, | |
525 | .statfs = cfs_fuse_statfs, | |
2927674d SP |
526 | .init = cfs_fuse_init, |
527 | .chown = cfs_fuse_chown, | |
528 | .chmod = cfs_fuse_chmod | |
fe000966 DM |
529 | }; |
530 | ||
531 | static char * | |
532 | create_dot_version_cb(cfs_plug_t *plug) | |
533 | { | |
534 | GString *outbuf = g_string_new(NULL); | |
535 | char *data = NULL; | |
536 | ||
537 | if (cfs_create_version_msg(outbuf) == 0) { | |
538 | data = outbuf->str; | |
539 | g_string_free(outbuf, FALSE); | |
540 | } else { | |
541 | g_string_free(outbuf, TRUE); | |
542 | } | |
543 | ||
544 | return data; | |
545 | } | |
546 | ||
547 | static char * | |
548 | create_dot_members_cb(cfs_plug_t *plug) | |
549 | { | |
550 | GString *outbuf = g_string_new(NULL); | |
551 | char *data = NULL; | |
552 | ||
553 | if (cfs_create_memberlist_msg(outbuf) == 0) { | |
554 | data = outbuf->str; | |
555 | g_string_free(outbuf, FALSE); | |
556 | } else { | |
557 | g_string_free(outbuf, TRUE); | |
558 | } | |
559 | ||
560 | return data; | |
561 | } | |
562 | ||
563 | static char * | |
564 | create_dot_vmlist_cb(cfs_plug_t *plug) | |
565 | { | |
566 | GString *outbuf = g_string_new(NULL); | |
567 | char *data = NULL; | |
568 | ||
569 | if (cfs_create_vmlist_msg(outbuf) == 0) { | |
570 | data = outbuf->str; | |
571 | g_string_free(outbuf, FALSE); | |
572 | } else { | |
573 | g_string_free(outbuf, TRUE); | |
574 | } | |
575 | ||
576 | return data; | |
577 | } | |
578 | ||
579 | static char * | |
580 | create_dot_rrd_cb(cfs_plug_t *plug) | |
581 | { | |
582 | GString *outbuf = g_string_new(NULL); | |
583 | ||
584 | cfs_rrd_dump(outbuf); | |
585 | char *data = outbuf->str; | |
586 | g_string_free(outbuf, FALSE); | |
587 | ||
588 | return data; | |
589 | } | |
590 | ||
591 | static char * | |
592 | create_dot_clusterlog_cb(cfs_plug_t *plug) | |
593 | { | |
594 | GString *outbuf = g_string_new(NULL); | |
595 | ||
596 | cfs_cluster_log_dump(outbuf, NULL, 50); | |
597 | char *data = outbuf->str; | |
598 | g_string_free(outbuf, FALSE); | |
599 | ||
600 | return data; | |
601 | } | |
602 | ||
603 | static char * | |
604 | read_debug_setting_cb(cfs_plug_t *plug) | |
605 | { | |
b1f92b4e | 606 | return g_strdup_printf("%d\n", !!cfs.debug); |
fe000966 DM |
607 | } |
608 | ||
65420fb3 DM |
609 | static void |
610 | my_qb_log_filter(struct qb_log_callsite *cs) | |
611 | { | |
612 | int32_t priority = cfs.debug ? LOG_DEBUG : LOG_INFO; | |
613 | ||
614 | if (qb_bit_is_set(cs->tags, QB_LOG_TAG_LIBQB_MSG_BIT)) { | |
615 | if (cs->priority <= (cfs.debug ? priority : LOG_WARNING)) { | |
616 | qb_bit_set(cs->targets, QB_LOG_SYSLOG); | |
617 | } else { | |
618 | qb_bit_clear(cs->targets, QB_LOG_SYSLOG); | |
619 | } | |
620 | if (cs->priority <= priority) { | |
621 | qb_bit_set(cs->targets, QB_LOG_STDERR); | |
622 | } else { | |
623 | qb_bit_clear(cs->targets, QB_LOG_STDERR); | |
624 | } | |
625 | } else { | |
626 | if (cs->priority <= priority) { | |
627 | qb_bit_set(cs->targets, QB_LOG_SYSLOG); | |
628 | qb_bit_set(cs->targets, QB_LOG_STDERR); | |
629 | } else { | |
630 | qb_bit_clear(cs->targets, QB_LOG_SYSLOG); | |
631 | qb_bit_clear(cs->targets, QB_LOG_STDERR); | |
632 | } | |
633 | } | |
634 | } | |
635 | ||
b1f92b4e DM |
636 | static void |
637 | update_qb_log_settings(void) | |
64405e32 | 638 | { |
65420fb3 | 639 | qb_log_filter_fn_set(my_qb_log_filter); |
92bc48dd | 640 | |
64405e32 DM |
641 | if (cfs.debug) { |
642 | qb_log_format_set(QB_LOG_SYSLOG, "[%g] %p: %b (%f:%l:%n)"); | |
643 | qb_log_format_set(QB_LOG_STDERR, "[%g] %p: %b (%f:%l:%n)"); | |
64405e32 DM |
644 | } else { |
645 | qb_log_format_set(QB_LOG_SYSLOG, "[%g] %p: %b"); | |
646 | qb_log_format_set(QB_LOG_STDERR, "[%g] %p: %b"); | |
64405e32 DM |
647 | } |
648 | } | |
649 | ||
b1f92b4e | 650 | static int |
65420fb3 | 651 | write_debug_setting_cb( |
b1f92b4e | 652 | cfs_plug_t *plug, |
fe000966 DM |
653 | const char *buf, |
654 | size_t size) | |
655 | { | |
656 | int res = -EIO; | |
657 | ||
658 | if (size < 2) | |
659 | return res; | |
660 | ||
661 | if (strncmp(buf, "0\n", 2) == 0) { | |
662 | if (cfs.debug) { | |
663 | cfs_message("disable debug mode"); | |
664 | cfs.debug = 0; | |
64405e32 | 665 | update_qb_log_settings(); |
fe000966 DM |
666 | } |
667 | return 2; | |
668 | } else if (strncmp(buf, "1\n", 2) == 0) { | |
669 | if (!cfs.debug) { | |
fe000966 | 670 | cfs.debug = 1; |
64405e32 DM |
671 | update_qb_log_settings(); |
672 | cfs_message("enable debug mode"); | |
fe000966 DM |
673 | } |
674 | return 2; | |
675 | } | |
676 | ||
677 | return res; | |
678 | } | |
679 | ||
b1f92b4e | 680 | static void |
fe000966 DM |
681 | create_symlinks(cfs_plug_base_t *bplug, const char *nodename) |
682 | { | |
683 | g_return_if_fail(bplug != NULL); | |
684 | g_return_if_fail(nodename != NULL); | |
685 | ||
686 | char *lnktarget = g_strdup_printf("nodes/%s", nodename); | |
687 | cfs_plug_link_t *lnk = cfs_plug_link_new("local", lnktarget); | |
688 | g_free(lnktarget); | |
689 | cfs_plug_base_insert(bplug, (cfs_plug_t*)lnk); | |
690 | ||
691 | lnktarget = g_strdup_printf("nodes/%s/qemu-server", nodename); | |
692 | lnk = cfs_plug_link_new("qemu-server", lnktarget); | |
693 | g_free(lnktarget); | |
694 | cfs_plug_base_insert(bplug, (cfs_plug_t*)lnk); | |
b1f92b4e | 695 | |
fe000966 DM |
696 | lnktarget = g_strdup_printf("nodes/%s/openvz", nodename); |
697 | lnk = cfs_plug_link_new("openvz", lnktarget); | |
698 | g_free(lnktarget); | |
699 | cfs_plug_base_insert(bplug, (cfs_plug_t*)lnk); | |
700 | ||
7f66b436 DM |
701 | lnktarget = g_strdup_printf("nodes/%s/lxc", nodename); |
702 | lnk = cfs_plug_link_new("lxc", lnktarget); | |
703 | g_free(lnktarget); | |
704 | cfs_plug_base_insert(bplug, (cfs_plug_t*)lnk); | |
705 | ||
fe000966 DM |
706 | cfs_plug_func_t *fplug = cfs_plug_func_new(".version", 0440, create_dot_version_cb, NULL); |
707 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
b1f92b4e | 708 | |
fe000966 DM |
709 | fplug = cfs_plug_func_new(".members", 0440, create_dot_members_cb, NULL); |
710 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
711 | ||
712 | fplug = cfs_plug_func_new(".vmlist", 0440, create_dot_vmlist_cb, NULL); | |
713 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
714 | ||
715 | fplug = cfs_plug_func_new(".rrd", 0440, create_dot_rrd_cb, NULL); | |
716 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
717 | ||
718 | fplug = cfs_plug_func_new(".clusterlog", 0440, create_dot_clusterlog_cb, NULL); | |
719 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
720 | ||
721 | fplug = cfs_plug_func_new(".debug", 0640, read_debug_setting_cb, write_debug_setting_cb); | |
722 | cfs_plug_base_insert(bplug, (cfs_plug_t*)fplug); | |
723 | ||
724 | ||
725 | } | |
726 | ||
727 | static char * | |
b1f92b4e | 728 | lookup_node_ip(const char *nodename) |
fe000966 | 729 | { |
6f2ef085 | 730 | char buf[INET6_ADDRSTRLEN]; |
fe000966 DM |
731 | struct addrinfo *ainfo; |
732 | struct addrinfo ahints; | |
ef105625 | 733 | char *res = NULL; |
fe000966 DM |
734 | memset(&ahints, 0, sizeof(ahints)); |
735 | ||
736 | if (getaddrinfo(nodename, NULL, &ahints, &ainfo)) | |
737 | return NULL; | |
738 | ||
739 | if (ainfo->ai_family == AF_INET) { | |
fe000966 DM |
740 | struct sockaddr_in *sa = (struct sockaddr_in *)ainfo->ai_addr; |
741 | inet_ntop(ainfo->ai_family, &sa->sin_addr, buf, sizeof(buf)); | |
742 | if (strncmp(buf, "127.", 4) != 0) { | |
ef105625 | 743 | res = g_strdup(buf); |
fe000966 | 744 | } |
b1f92b4e | 745 | } else if (ainfo->ai_family == AF_INET6) { |
6f2ef085 WB |
746 | struct sockaddr_in6 *sa = (struct sockaddr_in6 *)ainfo->ai_addr; |
747 | inet_ntop(ainfo->ai_family, &sa->sin6_addr, buf, sizeof(buf)); | |
748 | if (strcmp(buf, "::1") != 0) { | |
ef105625 | 749 | res = g_strdup(buf); |
6f2ef085 WB |
750 | } |
751 | } | |
fe000966 | 752 | |
ef105625 WB |
753 | freeaddrinfo(ainfo); |
754 | ||
755 | return res; | |
fe000966 | 756 | } |
64405e32 | 757 | |
b1f92b4e | 758 | static const char* |
64405e32 DM |
759 | log_tags_stringify(uint32_t tags) { |
760 | if (qb_bit_is_set(tags, QB_LOG_TAG_LIBQB_MSG_BIT)) { | |
761 | return "libqb"; | |
762 | } else { | |
763 | GQuark quark = tags; | |
764 | const char *domain = g_quark_to_string(quark); | |
765 | if (domain != NULL) { | |
766 | return domain; | |
767 | } else { | |
768 | return "main"; | |
769 | } | |
770 | } | |
771 | } | |
772 | ||
fe000966 DM |
773 | int main(int argc, char *argv[]) |
774 | { | |
775 | int ret = -1; | |
776 | int lockfd = -1; | |
777 | ||
778 | gboolean foreground = FALSE; | |
779 | gboolean force_local_mode = FALSE; | |
780 | gboolean wrote_pidfile = FALSE; | |
781 | memdb_t *memdb = NULL; | |
782 | dfsm_t *dcdb = NULL; | |
783 | dfsm_t *status_fsm = NULL; | |
784 | ||
64405e32 | 785 | qb_log_init("pmxcfs", LOG_DAEMON, LOG_DEBUG); |
65420fb3 | 786 | /* remove default filter */ |
b1f92b4e | 787 | qb_log_filter_ctl(QB_LOG_SYSLOG, QB_LOG_FILTER_REMOVE, |
65420fb3 DM |
788 | QB_LOG_FILTER_FILE, "*", LOG_DEBUG); |
789 | ||
64405e32 DM |
790 | qb_log_tags_stringify_fn_set(log_tags_stringify); |
791 | ||
792 | qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE); | |
64405e32 DM |
793 | |
794 | update_qb_log_settings(); | |
fe000966 DM |
795 | |
796 | g_set_print_handler(glib_print_handler); | |
797 | g_set_printerr_handler(glib_print_handler); | |
798 | g_log_set_default_handler(glib_log_handler, NULL); | |
799 | ||
800 | GOptionContext *context; | |
fe000966 DM |
801 | |
802 | GOptionEntry entries[] = { | |
803 | { "debug", 'd', 0, G_OPTION_ARG_NONE, &cfs.debug, "Turn on debug messages", NULL }, | |
804 | { "foreground", 'f', 0, G_OPTION_ARG_NONE, &foreground, "Do not daemonize server", NULL }, | |
b1f92b4e | 805 | { "local", 'l', 0, G_OPTION_ARG_NONE, &force_local_mode, |
2113d031 | 806 | "Force local mode (ignore corosync.conf, force quorum)", NULL }, |
fe000966 DM |
807 | { NULL }, |
808 | }; | |
809 | ||
810 | context = g_option_context_new (""); | |
811 | g_option_context_add_main_entries (context, entries, NULL); | |
812 | ||
813 | GError *err = NULL; | |
814 | if (!g_option_context_parse (context, &argc, &argv, &err)) | |
815 | { | |
816 | cfs_critical("option parsing failed: %s", err->message); | |
817 | g_error_free (err); | |
64405e32 | 818 | qb_log_fini(); |
fe000966 DM |
819 | exit (1); |
820 | } | |
821 | g_option_context_free(context); | |
822 | ||
823 | if (optind < argc) { | |
824 | cfs_critical("too many arguments"); | |
64405e32 | 825 | qb_log_fini(); |
fe000966 DM |
826 | exit(-1); |
827 | } | |
64405e32 DM |
828 | |
829 | if (cfs.debug) { | |
830 | update_qb_log_settings(); | |
831 | } | |
832 | ||
fe000966 DM |
833 | struct utsname utsname; |
834 | if (uname(&utsname) != 0) { | |
835 | cfs_critical("Unable to read local node name"); | |
64405e32 | 836 | qb_log_fini(); |
fe000966 DM |
837 | exit (-1); |
838 | } | |
b1f92b4e | 839 | |
b1bc4b27 WB |
840 | char *dot = strchr(utsname.nodename, '.'); |
841 | if (dot) | |
842 | *dot = 0; | |
fe000966 DM |
843 | |
844 | cfs.nodename = g_strdup(utsname.nodename); | |
845 | ||
b1f92b4e | 846 | if (!(cfs.ip = lookup_node_ip(cfs.nodename))) { |
fe000966 | 847 | cfs_critical("Unable to get local IP address"); |
64405e32 | 848 | qb_log_fini(); |
fe000966 DM |
849 | exit(-1); |
850 | } | |
851 | ||
852 | struct group *www_data = getgrnam("www-data"); | |
853 | if (!www_data) { | |
854 | cfs_critical("Unable to get www-data group ID"); | |
64405e32 | 855 | qb_log_fini(); |
fe000966 DM |
856 | exit (-1); |
857 | } | |
858 | cfs.gid = www_data->gr_gid; | |
859 | ||
fe000966 DM |
860 | umask(027); |
861 | ||
862 | mkdir(VARLIBDIR, 0755); | |
863 | ||
fbe6b41e | 864 | if ((lockfd = open(LOCKFILE, O_RDWR|O_CREAT|O_APPEND, 0600)) == -1) { |
fe000966 DM |
865 | cfs_critical("unable to create lock '%s': %s", LOCKFILE, strerror (errno)); |
866 | goto err; | |
867 | } | |
868 | ||
869 | for (int i = 10; i >= 0; i--) { | |
870 | if (flock(lockfd, LOCK_EX|LOCK_NB) != 0) { | |
871 | if (!i) { | |
872 | cfs_critical("unable to aquire pmxcfs lock: %s", strerror (errno)); | |
873 | goto err; | |
874 | } | |
875 | if (i == 10) | |
876 | cfs_message("unable to aquire pmxcfs lock - trying again"); | |
877 | ||
878 | sleep(1); | |
879 | } | |
880 | } | |
881 | ||
882 | cfs_status_init(); | |
883 | ||
884 | gboolean create = !g_file_test(DBFILENAME, G_FILE_TEST_EXISTS); | |
885 | ||
886 | if (!(memdb = memdb_open (DBFILENAME))) { | |
887 | cfs_critical("memdb_open failed - unable to open database '%s'", DBFILENAME); | |
888 | goto err; | |
889 | } | |
890 | ||
2113d031 | 891 | // automatically import corosync.conf from host |
fe000966 DM |
892 | if (create && !force_local_mode) { |
893 | char *cdata = NULL; | |
894 | gsize clen = 0; | |
895 | if (g_file_get_contents(HOST_CLUSTER_CONF_FN, &cdata, &clen, NULL)) { | |
896 | ||
897 | guint32 mtime = time(NULL); | |
898 | ||
2113d031 DM |
899 | memdb_create(memdb, "/corosync.conf", 0, mtime); |
900 | if (memdb_write(memdb, "/corosync.conf", 0, mtime, cdata, clen, 0, 1) < 0) { | |
901 | cfs_critical("memdb_write failed - unable to import corosync.conf"); | |
fe000966 DM |
902 | goto err; |
903 | } | |
904 | } | |
905 | } | |
906 | ||
2113d031 | 907 | // does corosync.conf exist? |
fe000966 | 908 | gpointer conf_data = NULL; |
2113d031 | 909 | int len = memdb_read(memdb, "corosync.conf", &conf_data); |
fe000966 DM |
910 | if (len >= 0) { |
911 | if (force_local_mode) { | |
2113d031 | 912 | cfs_message("forcing local mode (althought corosync.conf exists)"); |
fe000966 DM |
913 | cfs_set_quorate(1, TRUE); |
914 | } else { | |
915 | if (!(dcdb = dcdb_new(memdb))) | |
916 | goto err; | |
2113d031 | 917 | dcdb_sync_corosync_conf(memdb, 1); |
fe000966 DM |
918 | } |
919 | } else { | |
2113d031 | 920 | cfs_debug("using local mode (corosync.conf does not exist)"); |
fe000966 DM |
921 | cfs_set_quorate(1, TRUE); |
922 | } | |
923 | if (conf_data) g_free(conf_data); | |
924 | ||
925 | cfs_plug_memdb_t *config = cfs_plug_memdb_new("memdb", memdb, dcdb); | |
b1f92b4e | 926 | |
fe000966 DM |
927 | cfs_plug_base_t *bplug = cfs_plug_base_new("", (cfs_plug_t *)config); |
928 | ||
929 | create_symlinks(bplug, cfs.nodename); | |
930 | ||
931 | root_plug = (cfs_plug_t *)bplug; | |
932 | ||
8ce10e6f | 933 | umount2(CFSDIR, MNT_FORCE); |
fe000966 | 934 | |
27b69f59 | 935 | mkdir(CFSDIR, 0755); |
b1f92b4e | 936 | |
fe000966 DM |
937 | char *fa[] = { "-f", "-odefault_permissions", "-oallow_other", NULL}; |
938 | ||
b1f92b4e DM |
939 | struct fuse_args fuse_args = FUSE_ARGS_INIT(sizeof (fa)/sizeof(gpointer) - 1, fa); |
940 | ||
fe000966 DM |
941 | struct fuse_chan *fuse_chan = fuse_mount(CFSDIR, &fuse_args); |
942 | if (!fuse_chan) { | |
943 | cfs_critical("fuse_mount error: %s", strerror(errno)); | |
944 | goto err; | |
945 | } | |
946 | ||
947 | if (!(fuse = fuse_new(fuse_chan, &fuse_args, &fuse_ops, sizeof(fuse_ops), NULL))) { | |
948 | cfs_critical("fuse_new error: %s", strerror(errno)); | |
949 | goto err; | |
950 | } | |
951 | ||
952 | fuse_set_signal_handlers(fuse_get_session(fuse)); | |
953 | ||
fe000966 DM |
954 | if (!foreground) { |
955 | pid_t cpid = fork(); | |
956 | ||
957 | if (cpid == -1) { | |
958 | cfs_critical("failed to daemonize program - %s", strerror (errno)); | |
959 | goto err; | |
960 | } else if (cpid) { | |
961 | write_pidfile(cpid); | |
64405e32 | 962 | qb_log_fini(); |
fe000966 DM |
963 | _exit (0); |
964 | } else { | |
965 | int nullfd; | |
966 | ||
967 | chroot("/"); | |
968 | ||
969 | if ((nullfd = open("/dev/null", O_RDWR, 0)) != -1) { | |
970 | dup2(nullfd, 0); | |
971 | dup2(nullfd, 1); | |
972 | dup2(nullfd, 2); | |
973 | if (nullfd > 2) | |
974 | close (nullfd); | |
975 | } | |
976 | ||
977 | // do not print to the console after this point | |
64405e32 DM |
978 | qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_FALSE); |
979 | ||
fe000966 DM |
980 | setsid(); |
981 | } | |
982 | } else { | |
983 | write_pidfile(getpid()); | |
984 | } | |
985 | ||
986 | wrote_pidfile = TRUE; | |
987 | ||
988 | cfs_loop_t *corosync_loop = cfs_loop_new(fuse); | |
989 | ||
990 | cfs_service_t *service_quorum = NULL; | |
991 | cfs_service_t *service_confdb = NULL; | |
992 | cfs_service_t *service_dcdb = NULL; | |
993 | cfs_service_t *service_status = NULL; | |
994 | ||
995 | if (dcdb) { | |
996 | ||
997 | service_quorum = service_quorum_new(); | |
998 | ||
999 | cfs_loop_add_service(corosync_loop, service_quorum, QB_LOOP_HIGH); | |
1000 | ||
1001 | service_confdb = service_confdb_new(); | |
1002 | ||
1003 | cfs_loop_add_service(corosync_loop, service_confdb, QB_LOOP_MED); | |
1004 | ||
1005 | service_dcdb = service_dfsm_new(dcdb); | |
1006 | cfs_service_set_timer(service_dcdb, DCDB_VERIFY_TIME); | |
1007 | ||
1008 | cfs_loop_add_service(corosync_loop, service_dcdb, QB_LOOP_MED); | |
1009 | ||
1010 | status_fsm = cfs_status_dfsm_new(); | |
1011 | service_status = service_dfsm_new(status_fsm); | |
1012 | ||
1013 | cfs_loop_add_service(corosync_loop, service_status, QB_LOOP_LOW); | |
1014 | ||
1015 | } | |
1016 | ||
1017 | cfs_loop_start_worker(corosync_loop); | |
1018 | ||
1019 | server_start(memdb); | |
1020 | ||
1021 | ret = fuse_loop_mt(fuse); | |
1022 | ||
1023 | cfs_message("teardown filesystem"); | |
1024 | ||
1025 | server_stop(); | |
1026 | ||
1027 | fuse_unmount(CFSDIR, fuse_chan); | |
1028 | ||
1029 | fuse_destroy(fuse); | |
1030 | ||
1031 | cfs_debug("set stop event loop flag"); | |
1032 | ||
1033 | cfs_loop_stop_worker(corosync_loop); | |
1034 | ||
1035 | cfs_loop_destroy(corosync_loop); | |
1036 | ||
1037 | cfs_debug("worker finished"); | |
1038 | ||
1039 | if (service_dcdb) | |
1040 | service_dfsm_destroy(service_dcdb); | |
1041 | ||
1042 | if (service_confdb) | |
1043 | service_confdb_destroy(service_confdb); | |
1044 | ||
1045 | if (service_quorum) | |
1046 | service_quorum_destroy(service_quorum); | |
1047 | ||
1048 | if (service_status) | |
1049 | service_dfsm_destroy(service_status); | |
1050 | ||
1051 | sleep(1); /* do not restart too fast */ | |
1052 | ret: | |
1053 | ||
b1f92b4e | 1054 | if (status_fsm) |
fe000966 DM |
1055 | dfsm_destroy(status_fsm); |
1056 | ||
1057 | if (dcdb) | |
1058 | dfsm_destroy(dcdb); | |
1059 | ||
b1f92b4e | 1060 | if (memdb) |
fe000966 DM |
1061 | memdb_close(memdb); |
1062 | ||
1063 | if (wrote_pidfile) | |
1064 | unlink(CFS_PID_FN); | |
1065 | ||
1066 | cfs_message("exit proxmox configuration filesystem (%d)", ret); | |
1067 | ||
1068 | cfs_status_cleanup(); | |
1069 | ||
64405e32 DM |
1070 | qb_log_fini(); |
1071 | ||
fe000966 DM |
1072 | exit(ret); |
1073 | ||
1074 | err: | |
1075 | goto ret; | |
1076 | } |