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d025f1e4 ZJS |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <sys/signalfd.h> | |
23 | #include <sys/ioctl.h> | |
24 | #include <linux/sockios.h> | |
25 | #include <sys/statvfs.h> | |
26 | #include <sys/mman.h> | |
26687bf8 | 27 | #include <sys/timerfd.h> |
d025f1e4 ZJS |
28 | |
29 | #include <libudev.h> | |
d025f1e4 | 30 | |
74df0fca LP |
31 | #include "sd-journal.h" |
32 | #include "sd-messages.h" | |
33 | #include "sd-daemon.h" | |
a5c32cff | 34 | #include "fileio.h" |
d025f1e4 ZJS |
35 | #include "mkdir.h" |
36 | #include "hashmap.h" | |
37 | #include "journal-file.h" | |
38 | #include "socket-util.h" | |
39 | #include "cgroup-util.h" | |
40 | #include "list.h" | |
d025f1e4 ZJS |
41 | #include "missing.h" |
42 | #include "conf-parser.h" | |
74df0fca | 43 | #include "selinux-util.h" |
d025f1e4 ZJS |
44 | #include "journal-internal.h" |
45 | #include "journal-vacuum.h" | |
46 | #include "journal-authenticate.h" | |
d025f1e4 ZJS |
47 | #include "journald-rate-limit.h" |
48 | #include "journald-kmsg.h" | |
49 | #include "journald-syslog.h" | |
50 | #include "journald-stream.h" | |
51 | #include "journald-console.h" | |
52 | #include "journald-native.h" | |
74df0fca | 53 | #include "journald-server.h" |
d025f1e4 ZJS |
54 | |
55 | #ifdef HAVE_ACL | |
56 | #include <sys/acl.h> | |
57 | #include <acl/libacl.h> | |
58 | #include "acl-util.h" | |
59 | #endif | |
60 | ||
61 | #ifdef HAVE_SELINUX | |
62 | #include <selinux/selinux.h> | |
63 | #endif | |
64 | ||
65 | #define USER_JOURNALS_MAX 1024 | |
66 | ||
26687bf8 | 67 | #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE) |
7f1ad696 LP |
68 | #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC) |
69 | #define DEFAULT_RATE_LIMIT_BURST 1000 | |
d025f1e4 ZJS |
70 | |
71 | #define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC) | |
72 | ||
2c5859af | 73 | static const char* const storage_table[_STORAGE_MAX] = { |
d025f1e4 ZJS |
74 | [STORAGE_AUTO] = "auto", |
75 | [STORAGE_VOLATILE] = "volatile", | |
76 | [STORAGE_PERSISTENT] = "persistent", | |
77 | [STORAGE_NONE] = "none" | |
78 | }; | |
79 | ||
80 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
81 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
82 | ||
2c5859af DM |
83 | static const char* const split_mode_table[_SPLIT_MAX] = { |
84 | [SPLIT_LOGIN] = "login", | |
d025f1e4 | 85 | [SPLIT_UID] = "uid", |
2c5859af | 86 | [SPLIT_NONE] = "none", |
d025f1e4 ZJS |
87 | }; |
88 | ||
89 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
90 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); | |
91 | ||
670b110c | 92 | static uint64_t available_space(Server *s, bool verbose) { |
db91ea32 | 93 | char ids[33]; |
7fd1b19b | 94 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
95 | sd_id128_t machine; |
96 | struct statvfs ss; | |
670b110c | 97 | uint64_t sum = 0, ss_avail = 0, avail = 0; |
d025f1e4 | 98 | int r; |
7fd1b19b | 99 | _cleanup_closedir_ DIR *d = NULL; |
d025f1e4 | 100 | usec_t ts; |
670b110c | 101 | const char *f; |
d025f1e4 ZJS |
102 | JournalMetrics *m; |
103 | ||
104 | ts = now(CLOCK_MONOTONIC); | |
105 | ||
670b110c ZJS |
106 | if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts |
107 | && !verbose) | |
d025f1e4 ZJS |
108 | return s->cached_available_space; |
109 | ||
110 | r = sd_id128_get_machine(&machine); | |
111 | if (r < 0) | |
112 | return 0; | |
113 | ||
114 | if (s->system_journal) { | |
115 | f = "/var/log/journal/"; | |
116 | m = &s->system_metrics; | |
117 | } else { | |
118 | f = "/run/log/journal/"; | |
119 | m = &s->runtime_metrics; | |
120 | } | |
121 | ||
122 | assert(m); | |
123 | ||
124 | p = strappend(f, sd_id128_to_string(machine, ids)); | |
125 | if (!p) | |
126 | return 0; | |
127 | ||
128 | d = opendir(p); | |
d025f1e4 ZJS |
129 | if (!d) |
130 | return 0; | |
131 | ||
132 | if (fstatvfs(dirfd(d), &ss) < 0) | |
db91ea32 | 133 | return 0; |
d025f1e4 ZJS |
134 | |
135 | for (;;) { | |
136 | struct stat st; | |
137 | struct dirent *de; | |
d025f1e4 | 138 | |
0371ca0d FW |
139 | errno = 0; |
140 | de = readdir(d); | |
141 | if (!de && errno != 0) | |
142 | return 0; | |
d025f1e4 ZJS |
143 | |
144 | if (!de) | |
145 | break; | |
146 | ||
147 | if (!endswith(de->d_name, ".journal") && | |
148 | !endswith(de->d_name, ".journal~")) | |
149 | continue; | |
150 | ||
151 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) | |
152 | continue; | |
153 | ||
154 | if (!S_ISREG(st.st_mode)) | |
155 | continue; | |
156 | ||
157 | sum += (uint64_t) st.st_blocks * 512UL; | |
158 | } | |
159 | ||
d025f1e4 ZJS |
160 | ss_avail = ss.f_bsize * ss.f_bavail; |
161 | ||
348ced90 ZJS |
162 | /* If we reached a high mark, we will always allow this much |
163 | * again, unless usage goes above max_use. This watermark | |
164 | * value is cached so that we don't give up space on pressure, | |
165 | * but hover below the maximum usage. */ | |
166 | ||
167 | if (m->use < sum) | |
168 | m->use = sum; | |
169 | ||
170 | avail = LESS_BY(ss_avail, m->keep_free); | |
171 | ||
172 | s->cached_available_space = LESS_BY(MIN(m->max_use, avail), sum); | |
d025f1e4 ZJS |
173 | s->cached_available_space_timestamp = ts; |
174 | ||
670b110c ZJS |
175 | if (verbose) { |
176 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
177 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX]; | |
178 | ||
179 | server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE, | |
348ced90 ZJS |
180 | "%s journal is using %s (max allowed %s, " |
181 | "trying to leave %s free of %s available → current limit %s).", | |
670b110c ZJS |
182 | s->system_journal ? "Permanent" : "Runtime", |
183 | format_bytes(fb1, sizeof(fb1), sum), | |
184 | format_bytes(fb2, sizeof(fb2), m->max_use), | |
185 | format_bytes(fb3, sizeof(fb3), m->keep_free), | |
186 | format_bytes(fb4, sizeof(fb4), ss_avail), | |
348ced90 | 187 | format_bytes(fb5, sizeof(fb5), s->cached_available_space + sum)); |
670b110c ZJS |
188 | } |
189 | ||
190 | return s->cached_available_space; | |
d025f1e4 ZJS |
191 | } |
192 | ||
d025f1e4 ZJS |
193 | void server_fix_perms(Server *s, JournalFile *f, uid_t uid) { |
194 | int r; | |
195 | #ifdef HAVE_ACL | |
196 | acl_t acl; | |
197 | acl_entry_t entry; | |
198 | acl_permset_t permset; | |
199 | #endif | |
200 | ||
201 | assert(f); | |
202 | ||
4608af43 | 203 | r = fchmod(f->fd, 0640); |
d025f1e4 | 204 | if (r < 0) |
4608af43 | 205 | log_warning("Failed to fix access mode on %s, ignoring: %s", f->path, strerror(-r)); |
d025f1e4 ZJS |
206 | |
207 | #ifdef HAVE_ACL | |
208 | if (uid <= 0) | |
209 | return; | |
210 | ||
211 | acl = acl_get_fd(f->fd); | |
212 | if (!acl) { | |
213 | log_warning("Failed to read ACL on %s, ignoring: %m", f->path); | |
214 | return; | |
215 | } | |
216 | ||
217 | r = acl_find_uid(acl, uid, &entry); | |
218 | if (r <= 0) { | |
219 | ||
220 | if (acl_create_entry(&acl, &entry) < 0 || | |
221 | acl_set_tag_type(entry, ACL_USER) < 0 || | |
222 | acl_set_qualifier(entry, &uid) < 0) { | |
223 | log_warning("Failed to patch ACL on %s, ignoring: %m", f->path); | |
224 | goto finish; | |
225 | } | |
226 | } | |
227 | ||
23ad4dd8 JAS |
228 | /* We do not recalculate the mask unconditionally here, |
229 | * so that the fchmod() mask above stays intact. */ | |
d025f1e4 | 230 | if (acl_get_permset(entry, &permset) < 0 || |
23ad4dd8 JAS |
231 | acl_add_perm(permset, ACL_READ) < 0 || |
232 | calc_acl_mask_if_needed(&acl) < 0) { | |
d025f1e4 ZJS |
233 | log_warning("Failed to patch ACL on %s, ignoring: %m", f->path); |
234 | goto finish; | |
235 | } | |
236 | ||
237 | if (acl_set_fd(f->fd, acl) < 0) | |
238 | log_warning("Failed to set ACL on %s, ignoring: %m", f->path); | |
239 | ||
240 | finish: | |
241 | acl_free(acl); | |
242 | #endif | |
243 | } | |
244 | ||
245 | static JournalFile* find_journal(Server *s, uid_t uid) { | |
ed375beb | 246 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
247 | int r; |
248 | JournalFile *f; | |
249 | sd_id128_t machine; | |
250 | ||
251 | assert(s); | |
252 | ||
253 | /* We split up user logs only on /var, not on /run. If the | |
254 | * runtime file is open, we write to it exclusively, in order | |
255 | * to guarantee proper order as soon as we flush /run to | |
256 | * /var and close the runtime file. */ | |
257 | ||
258 | if (s->runtime_journal) | |
259 | return s->runtime_journal; | |
260 | ||
261 | if (uid <= 0) | |
262 | return s->system_journal; | |
263 | ||
264 | r = sd_id128_get_machine(&machine); | |
265 | if (r < 0) | |
266 | return s->system_journal; | |
267 | ||
268 | f = hashmap_get(s->user_journals, UINT32_TO_PTR(uid)); | |
269 | if (f) | |
270 | return f; | |
271 | ||
de0671ee ZJS |
272 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
273 | SD_ID128_FORMAT_VAL(machine), uid) < 0) | |
d025f1e4 ZJS |
274 | return s->system_journal; |
275 | ||
276 | while (hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { | |
277 | /* Too many open? Then let's close one */ | |
278 | f = hashmap_steal_first(s->user_journals); | |
279 | assert(f); | |
280 | journal_file_close(f); | |
281 | } | |
282 | ||
cbd67177 | 283 | r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f); |
d025f1e4 ZJS |
284 | if (r < 0) |
285 | return s->system_journal; | |
286 | ||
287 | server_fix_perms(s, f, uid); | |
288 | ||
289 | r = hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f); | |
290 | if (r < 0) { | |
291 | journal_file_close(f); | |
292 | return s->system_journal; | |
293 | } | |
294 | ||
295 | return f; | |
296 | } | |
297 | ||
fc55baee ZJS |
298 | static int do_rotate(Server *s, JournalFile **f, const char* name, |
299 | bool seal, uint32_t uid) { | |
300 | int r; | |
301 | assert(s); | |
302 | ||
303 | if (!*f) | |
304 | return -EINVAL; | |
305 | ||
306 | r = journal_file_rotate(f, s->compress, seal); | |
307 | if (r < 0) | |
308 | if (*f) | |
309 | log_error("Failed to rotate %s: %s", | |
310 | (*f)->path, strerror(-r)); | |
311 | else | |
312 | log_error("Failed to create new %s journal: %s", | |
313 | name, strerror(-r)); | |
314 | else | |
315 | server_fix_perms(s, *f, uid); | |
316 | return r; | |
317 | } | |
318 | ||
d025f1e4 ZJS |
319 | void server_rotate(Server *s) { |
320 | JournalFile *f; | |
321 | void *k; | |
322 | Iterator i; | |
323 | int r; | |
324 | ||
325 | log_debug("Rotating..."); | |
326 | ||
fc55baee ZJS |
327 | do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
328 | do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 ZJS |
329 | |
330 | HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { | |
fc55baee ZJS |
331 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k)); |
332 | if (r >= 0) | |
d025f1e4 | 333 | hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
334 | else if (!f) |
335 | /* Old file has been closed and deallocated */ | |
336 | hashmap_remove(s->user_journals, k); | |
d025f1e4 ZJS |
337 | } |
338 | } | |
339 | ||
26687bf8 OS |
340 | void server_sync(Server *s) { |
341 | JournalFile *f; | |
342 | void *k; | |
343 | Iterator i; | |
344 | int r; | |
345 | ||
26687bf8 OS |
346 | if (s->system_journal) { |
347 | r = journal_file_set_offline(s->system_journal); | |
348 | if (r < 0) | |
349 | log_error("Failed to sync system journal: %s", strerror(-r)); | |
350 | } | |
351 | ||
352 | HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { | |
353 | r = journal_file_set_offline(f); | |
354 | if (r < 0) | |
355 | log_error("Failed to sync user journal: %s", strerror(-r)); | |
356 | } | |
357 | ||
f9a810be LP |
358 | if (s->sync_event_source) { |
359 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
360 | if (r < 0) | |
361 | log_error("Failed to disable sync timer source: %s", strerror(-r)); | |
362 | } | |
26687bf8 OS |
363 | |
364 | s->sync_scheduled = false; | |
365 | } | |
366 | ||
63c8666b ZJS |
367 | static void do_vacuum(Server *s, char *ids, JournalFile *f, const char* path, |
368 | JournalMetrics *metrics) { | |
369 | char *p; | |
370 | int r; | |
371 | ||
372 | if (!f) | |
373 | return; | |
374 | ||
375 | p = strappenda(path, ids); | |
376 | r = journal_directory_vacuum(p, metrics->max_use, s->max_retention_usec, &s->oldest_file_usec); | |
377 | if (r < 0 && r != -ENOENT) | |
378 | log_error("Failed to vacuum %s: %s", p, strerror(-r)); | |
379 | } | |
380 | ||
d025f1e4 | 381 | void server_vacuum(Server *s) { |
d025f1e4 ZJS |
382 | char ids[33]; |
383 | sd_id128_t machine; | |
384 | int r; | |
385 | ||
386 | log_debug("Vacuuming..."); | |
387 | ||
388 | s->oldest_file_usec = 0; | |
389 | ||
390 | r = sd_id128_get_machine(&machine); | |
391 | if (r < 0) { | |
392 | log_error("Failed to get machine ID: %s", strerror(-r)); | |
393 | return; | |
394 | } | |
d025f1e4 ZJS |
395 | sd_id128_to_string(machine, ids); |
396 | ||
63c8666b ZJS |
397 | do_vacuum(s, ids, s->system_journal, "/var/log/journal/", &s->system_metrics); |
398 | do_vacuum(s, ids, s->runtime_journal, "/run/log/journal/", &s->runtime_metrics); | |
d025f1e4 ZJS |
399 | |
400 | s->cached_available_space_timestamp = 0; | |
401 | } | |
402 | ||
0c24bb23 LP |
403 | static void server_cache_machine_id(Server *s) { |
404 | sd_id128_t id; | |
405 | int r; | |
406 | ||
407 | assert(s); | |
408 | ||
409 | r = sd_id128_get_machine(&id); | |
410 | if (r < 0) | |
411 | return; | |
412 | ||
413 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
414 | } | |
415 | ||
416 | static void server_cache_boot_id(Server *s) { | |
417 | sd_id128_t id; | |
418 | int r; | |
419 | ||
420 | assert(s); | |
421 | ||
422 | r = sd_id128_get_boot(&id); | |
423 | if (r < 0) | |
424 | return; | |
425 | ||
426 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
427 | } | |
428 | ||
429 | static void server_cache_hostname(Server *s) { | |
430 | _cleanup_free_ char *t = NULL; | |
431 | char *x; | |
432 | ||
433 | assert(s); | |
434 | ||
435 | t = gethostname_malloc(); | |
436 | if (!t) | |
437 | return; | |
438 | ||
439 | x = strappend("_HOSTNAME=", t); | |
440 | if (!x) | |
441 | return; | |
442 | ||
443 | free(s->hostname_field); | |
444 | s->hostname_field = x; | |
445 | } | |
446 | ||
d025f1e4 ZJS |
447 | bool shall_try_append_again(JournalFile *f, int r) { |
448 | ||
449 | /* -E2BIG Hit configured limit | |
450 | -EFBIG Hit fs limit | |
451 | -EDQUOT Quota limit hit | |
452 | -ENOSPC Disk full | |
453 | -EHOSTDOWN Other machine | |
454 | -EBUSY Unclean shutdown | |
455 | -EPROTONOSUPPORT Unsupported feature | |
456 | -EBADMSG Corrupted | |
457 | -ENODATA Truncated | |
458 | -ESHUTDOWN Already archived */ | |
459 | ||
460 | if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC) | |
461 | log_debug("%s: Allocation limit reached, rotating.", f->path); | |
462 | else if (r == -EHOSTDOWN) | |
463 | log_info("%s: Journal file from other machine, rotating.", f->path); | |
464 | else if (r == -EBUSY) | |
465 | log_info("%s: Unclean shutdown, rotating.", f->path); | |
466 | else if (r == -EPROTONOSUPPORT) | |
467 | log_info("%s: Unsupported feature, rotating.", f->path); | |
468 | else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN) | |
469 | log_warning("%s: Journal file corrupted, rotating.", f->path); | |
470 | else | |
471 | return false; | |
472 | ||
473 | return true; | |
474 | } | |
475 | ||
d07f7b9e | 476 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) { |
d025f1e4 ZJS |
477 | JournalFile *f; |
478 | bool vacuumed = false; | |
479 | int r; | |
480 | ||
481 | assert(s); | |
482 | assert(iovec); | |
483 | assert(n > 0); | |
484 | ||
485 | f = find_journal(s, uid); | |
486 | if (!f) | |
487 | return; | |
488 | ||
489 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
490 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
491 | server_rotate(s); | |
492 | server_vacuum(s); | |
493 | vacuumed = true; | |
494 | ||
495 | f = find_journal(s, uid); | |
496 | if (!f) | |
497 | return; | |
498 | } | |
499 | ||
500 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
26687bf8 | 501 | if (r >= 0) { |
d07f7b9e | 502 | server_schedule_sync(s, priority); |
d025f1e4 | 503 | return; |
26687bf8 | 504 | } |
d025f1e4 ZJS |
505 | |
506 | if (vacuumed || !shall_try_append_again(f, r)) { | |
e40ec7ae ZJS |
507 | size_t size = 0; |
508 | unsigned i; | |
509 | for (i = 0; i < n; i++) | |
510 | size += iovec[i].iov_len; | |
511 | ||
512 | log_error("Failed to write entry (%d items, %zu bytes), ignoring: %s", n, size, strerror(-r)); | |
d025f1e4 ZJS |
513 | return; |
514 | } | |
515 | ||
516 | server_rotate(s); | |
517 | server_vacuum(s); | |
518 | ||
519 | f = find_journal(s, uid); | |
520 | if (!f) | |
521 | return; | |
522 | ||
523 | log_debug("Retrying write."); | |
524 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
e40ec7ae ZJS |
525 | if (r < 0) { |
526 | size_t size = 0; | |
527 | unsigned i; | |
528 | for (i = 0; i < n; i++) | |
529 | size += iovec[i].iov_len; | |
530 | ||
531 | log_error("Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %s", n, size, strerror(-r)); | |
d07f7b9e LP |
532 | } else |
533 | server_schedule_sync(s, priority); | |
d025f1e4 ZJS |
534 | } |
535 | ||
536 | static void dispatch_message_real( | |
537 | Server *s, | |
538 | struct iovec *iovec, unsigned n, unsigned m, | |
539 | struct ucred *ucred, | |
540 | struct timeval *tv, | |
541 | const char *label, size_t label_len, | |
968f3196 | 542 | const char *unit_id, |
d07f7b9e | 543 | int priority, |
968f3196 | 544 | pid_t object_pid) { |
d025f1e4 | 545 | |
968f3196 | 546 | char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)], |
ae018d9b LP |
547 | uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)], |
548 | gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)], | |
549 | owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)], | |
d3789917 | 550 | source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)], |
968f3196 ZJS |
551 | o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)], |
552 | o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)], | |
553 | o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)]; | |
554 | uid_t object_uid; | |
555 | gid_t object_gid; | |
968f3196 | 556 | char *x; |
d025f1e4 | 557 | int r; |
ae018d9b | 558 | char *t, *c; |
82499507 LP |
559 | uid_t realuid = 0, owner = 0, journal_uid; |
560 | bool owner_valid = false; | |
ae018d9b | 561 | #ifdef HAVE_AUDIT |
968f3196 ZJS |
562 | char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], |
563 | audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)], | |
564 | o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], | |
565 | o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)]; | |
ae018d9b LP |
566 | |
567 | uint32_t audit; | |
568 | uid_t loginuid; | |
569 | #endif | |
d025f1e4 ZJS |
570 | |
571 | assert(s); | |
572 | assert(iovec); | |
573 | assert(n > 0); | |
968f3196 | 574 | assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m); |
d025f1e4 ZJS |
575 | |
576 | if (ucred) { | |
d025f1e4 ZJS |
577 | realuid = ucred->uid; |
578 | ||
de0671ee | 579 | sprintf(pid, "_PID="PID_FMT, ucred->pid); |
c2457105 | 580 | IOVEC_SET_STRING(iovec[n++], pid); |
d025f1e4 | 581 | |
de0671ee | 582 | sprintf(uid, "_UID="UID_FMT, ucred->uid); |
c2457105 | 583 | IOVEC_SET_STRING(iovec[n++], uid); |
d025f1e4 | 584 | |
de0671ee | 585 | sprintf(gid, "_GID="GID_FMT, ucred->gid); |
c2457105 | 586 | IOVEC_SET_STRING(iovec[n++], gid); |
d025f1e4 ZJS |
587 | |
588 | r = get_process_comm(ucred->pid, &t); | |
589 | if (r >= 0) { | |
968f3196 | 590 | x = strappenda("_COMM=", t); |
d025f1e4 | 591 | free(t); |
968f3196 | 592 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
593 | } |
594 | ||
595 | r = get_process_exe(ucred->pid, &t); | |
596 | if (r >= 0) { | |
968f3196 | 597 | x = strappenda("_EXE=", t); |
d025f1e4 | 598 | free(t); |
968f3196 | 599 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
600 | } |
601 | ||
9bdbc2e2 | 602 | r = get_process_cmdline(ucred->pid, 0, false, &t); |
d025f1e4 | 603 | if (r >= 0) { |
968f3196 | 604 | x = strappenda("_CMDLINE=", t); |
d025f1e4 | 605 | free(t); |
3a832116 SL |
606 | IOVEC_SET_STRING(iovec[n++], x); |
607 | } | |
608 | ||
609 | r = get_process_capeff(ucred->pid, &t); | |
610 | if (r >= 0) { | |
611 | x = strappenda("_CAP_EFFECTIVE=", t); | |
612 | free(t); | |
968f3196 | 613 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
614 | } |
615 | ||
0a20e3c1 | 616 | #ifdef HAVE_AUDIT |
d025f1e4 | 617 | r = audit_session_from_pid(ucred->pid, &audit); |
ae018d9b | 618 | if (r >= 0) { |
de0671ee | 619 | sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit); |
ae018d9b LP |
620 | IOVEC_SET_STRING(iovec[n++], audit_session); |
621 | } | |
d025f1e4 ZJS |
622 | |
623 | r = audit_loginuid_from_pid(ucred->pid, &loginuid); | |
7027ff61 | 624 | if (r >= 0) { |
de0671ee | 625 | sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid); |
ae018d9b | 626 | IOVEC_SET_STRING(iovec[n++], audit_loginuid); |
d025f1e4 | 627 | } |
ae018d9b | 628 | #endif |
d025f1e4 | 629 | |
e9174f29 | 630 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c); |
7027ff61 | 631 | if (r >= 0) { |
968f3196 ZJS |
632 | char *session = NULL; |
633 | ||
634 | x = strappenda("_SYSTEMD_CGROUP=", c); | |
635 | IOVEC_SET_STRING(iovec[n++], x); | |
d025f1e4 | 636 | |
ae018d9b LP |
637 | r = cg_path_get_session(c, &t); |
638 | if (r >= 0) { | |
639 | session = strappenda("_SYSTEMD_SESSION=", t); | |
640 | free(t); | |
d025f1e4 | 641 | IOVEC_SET_STRING(iovec[n++], session); |
ae018d9b LP |
642 | } |
643 | ||
644 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
645 | owner_valid = true; | |
d025f1e4 | 646 | |
de0671ee | 647 | sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner); |
d025f1e4 | 648 | IOVEC_SET_STRING(iovec[n++], owner_uid); |
ae018d9b | 649 | } |
d025f1e4 | 650 | |
ae018d9b | 651 | if (cg_path_get_unit(c, &t) >= 0) { |
968f3196 | 652 | x = strappenda("_SYSTEMD_UNIT=", t); |
ae018d9b | 653 | free(t); |
19cace37 LP |
654 | IOVEC_SET_STRING(iovec[n++], x); |
655 | } else if (unit_id && !session) { | |
656 | x = strappenda("_SYSTEMD_UNIT=", unit_id); | |
657 | IOVEC_SET_STRING(iovec[n++], x); | |
658 | } | |
659 | ||
660 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
968f3196 | 661 | x = strappenda("_SYSTEMD_USER_UNIT=", t); |
ae018d9b | 662 | free(t); |
968f3196 | 663 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 LP |
664 | } else if (unit_id && session) { |
665 | x = strappenda("_SYSTEMD_USER_UNIT=", unit_id); | |
666 | IOVEC_SET_STRING(iovec[n++], x); | |
667 | } | |
ae018d9b | 668 | |
0a244b8e LP |
669 | if (cg_path_get_slice(c, &t) >= 0) { |
670 | x = strappenda("_SYSTEMD_SLICE=", t); | |
671 | free(t); | |
672 | IOVEC_SET_STRING(iovec[n++], x); | |
673 | } | |
674 | ||
ae018d9b | 675 | free(c); |
2d43b190 DM |
676 | } else if (unit_id) { |
677 | x = strappenda("_SYSTEMD_UNIT=", unit_id); | |
678 | IOVEC_SET_STRING(iovec[n++], x); | |
ef1673d1 | 679 | } |
d025f1e4 | 680 | |
d025f1e4 | 681 | #ifdef HAVE_SELINUX |
d682b3a7 LP |
682 | if (use_selinux()) { |
683 | if (label) { | |
f8294e41 | 684 | x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1); |
ae018d9b | 685 | |
d682b3a7 LP |
686 | *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0; |
687 | IOVEC_SET_STRING(iovec[n++], x); | |
688 | } else { | |
689 | security_context_t con; | |
d025f1e4 | 690 | |
d682b3a7 LP |
691 | if (getpidcon(ucred->pid, &con) >= 0) { |
692 | x = strappenda("_SELINUX_CONTEXT=", con); | |
e7ff4e7f | 693 | |
d682b3a7 LP |
694 | freecon(con); |
695 | IOVEC_SET_STRING(iovec[n++], x); | |
696 | } | |
d025f1e4 ZJS |
697 | } |
698 | } | |
699 | #endif | |
700 | } | |
968f3196 ZJS |
701 | assert(n <= m); |
702 | ||
703 | if (object_pid) { | |
704 | r = get_process_uid(object_pid, &object_uid); | |
705 | if (r >= 0) { | |
de0671ee | 706 | sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid); |
968f3196 ZJS |
707 | IOVEC_SET_STRING(iovec[n++], o_uid); |
708 | } | |
709 | ||
710 | r = get_process_gid(object_pid, &object_gid); | |
711 | if (r >= 0) { | |
de0671ee | 712 | sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid); |
968f3196 ZJS |
713 | IOVEC_SET_STRING(iovec[n++], o_gid); |
714 | } | |
715 | ||
716 | r = get_process_comm(object_pid, &t); | |
717 | if (r >= 0) { | |
718 | x = strappenda("OBJECT_COMM=", t); | |
719 | free(t); | |
720 | IOVEC_SET_STRING(iovec[n++], x); | |
721 | } | |
722 | ||
723 | r = get_process_exe(object_pid, &t); | |
724 | if (r >= 0) { | |
725 | x = strappenda("OBJECT_EXE=", t); | |
726 | free(t); | |
727 | IOVEC_SET_STRING(iovec[n++], x); | |
728 | } | |
729 | ||
730 | r = get_process_cmdline(object_pid, 0, false, &t); | |
731 | if (r >= 0) { | |
732 | x = strappenda("OBJECT_CMDLINE=", t); | |
733 | free(t); | |
734 | IOVEC_SET_STRING(iovec[n++], x); | |
735 | } | |
736 | ||
737 | #ifdef HAVE_AUDIT | |
738 | r = audit_session_from_pid(object_pid, &audit); | |
739 | if (r >= 0) { | |
de0671ee | 740 | sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit); |
968f3196 ZJS |
741 | IOVEC_SET_STRING(iovec[n++], o_audit_session); |
742 | } | |
743 | ||
744 | r = audit_loginuid_from_pid(object_pid, &loginuid); | |
745 | if (r >= 0) { | |
de0671ee | 746 | sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid); |
968f3196 ZJS |
747 | IOVEC_SET_STRING(iovec[n++], o_audit_loginuid); |
748 | } | |
749 | #endif | |
750 | ||
e9174f29 | 751 | r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c); |
968f3196 ZJS |
752 | if (r >= 0) { |
753 | x = strappenda("OBJECT_SYSTEMD_CGROUP=", c); | |
754 | IOVEC_SET_STRING(iovec[n++], x); | |
755 | ||
756 | r = cg_path_get_session(c, &t); | |
757 | if (r >= 0) { | |
758 | x = strappenda("OBJECT_SYSTEMD_SESSION=", t); | |
759 | free(t); | |
760 | IOVEC_SET_STRING(iovec[n++], x); | |
761 | } | |
762 | ||
763 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
de0671ee | 764 | sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner); |
968f3196 ZJS |
765 | IOVEC_SET_STRING(iovec[n++], o_owner_uid); |
766 | } | |
767 | ||
768 | if (cg_path_get_unit(c, &t) >= 0) { | |
769 | x = strappenda("OBJECT_SYSTEMD_UNIT=", t); | |
770 | free(t); | |
19cace37 LP |
771 | IOVEC_SET_STRING(iovec[n++], x); |
772 | } | |
773 | ||
774 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
968f3196 ZJS |
775 | x = strappenda("OBJECT_SYSTEMD_USER_UNIT=", t); |
776 | free(t); | |
968f3196 | 777 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 778 | } |
968f3196 ZJS |
779 | |
780 | free(c); | |
781 | } | |
782 | } | |
783 | assert(n <= m); | |
d025f1e4 ZJS |
784 | |
785 | if (tv) { | |
ae018d9b | 786 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv)); |
a5693989 | 787 | IOVEC_SET_STRING(iovec[n++], source_time); |
d025f1e4 ZJS |
788 | } |
789 | ||
790 | /* Note that strictly speaking storing the boot id here is | |
791 | * redundant since the entry includes this in-line | |
792 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 LP |
793 | if (!isempty(s->boot_id_field)) |
794 | IOVEC_SET_STRING(iovec[n++], s->boot_id_field); | |
d025f1e4 | 795 | |
0c24bb23 LP |
796 | if (!isempty(s->machine_id_field)) |
797 | IOVEC_SET_STRING(iovec[n++], s->machine_id_field); | |
d025f1e4 | 798 | |
0c24bb23 LP |
799 | if (!isempty(s->hostname_field)) |
800 | IOVEC_SET_STRING(iovec[n++], s->hostname_field); | |
d025f1e4 ZJS |
801 | |
802 | assert(n <= m); | |
803 | ||
da499392 | 804 | if (s->split_mode == SPLIT_UID && realuid > 0) |
40adcda8 | 805 | /* Split up strictly by any UID */ |
759c945a | 806 | journal_uid = realuid; |
82499507 | 807 | else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0) |
40adcda8 LP |
808 | /* Split up by login UIDs, this avoids creation of |
809 | * individual journals for system UIDs. We do this | |
810 | * only if the realuid is not root, in order not to | |
82499507 LP |
811 | * accidentally leak privileged information to the |
812 | * user that is logged by a privileged process that is | |
813 | * part of an unprivileged session.*/ | |
8a0889df | 814 | journal_uid = owner; |
da499392 KS |
815 | else |
816 | journal_uid = 0; | |
759c945a | 817 | |
d07f7b9e | 818 | write_to_journal(s, journal_uid, iovec, n, priority); |
d025f1e4 ZJS |
819 | } |
820 | ||
821 | void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) { | |
822 | char mid[11 + 32 + 1]; | |
823 | char buffer[16 + LINE_MAX + 1]; | |
824 | struct iovec iovec[N_IOVEC_META_FIELDS + 4]; | |
825 | int n = 0; | |
826 | va_list ap; | |
b92bea5d | 827 | struct ucred ucred = {}; |
d025f1e4 ZJS |
828 | |
829 | assert(s); | |
830 | assert(format); | |
831 | ||
832 | IOVEC_SET_STRING(iovec[n++], "PRIORITY=6"); | |
833 | IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver"); | |
834 | ||
835 | memcpy(buffer, "MESSAGE=", 8); | |
836 | va_start(ap, format); | |
837 | vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap); | |
838 | va_end(ap); | |
839 | char_array_0(buffer); | |
840 | IOVEC_SET_STRING(iovec[n++], buffer); | |
841 | ||
842 | if (!sd_id128_equal(message_id, SD_ID128_NULL)) { | |
843 | snprintf(mid, sizeof(mid), MESSAGE_ID(message_id)); | |
844 | char_array_0(mid); | |
845 | IOVEC_SET_STRING(iovec[n++], mid); | |
846 | } | |
847 | ||
d025f1e4 ZJS |
848 | ucred.pid = getpid(); |
849 | ucred.uid = getuid(); | |
850 | ucred.gid = getgid(); | |
851 | ||
d07f7b9e | 852 | dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL, LOG_INFO, 0); |
d025f1e4 ZJS |
853 | } |
854 | ||
855 | void server_dispatch_message( | |
856 | Server *s, | |
857 | struct iovec *iovec, unsigned n, unsigned m, | |
858 | struct ucred *ucred, | |
859 | struct timeval *tv, | |
860 | const char *label, size_t label_len, | |
861 | const char *unit_id, | |
968f3196 ZJS |
862 | int priority, |
863 | pid_t object_pid) { | |
d025f1e4 | 864 | |
7027ff61 | 865 | int rl, r; |
7fd1b19b | 866 | _cleanup_free_ char *path = NULL; |
db91ea32 | 867 | char *c; |
d025f1e4 ZJS |
868 | |
869 | assert(s); | |
870 | assert(iovec || n == 0); | |
871 | ||
872 | if (n == 0) | |
873 | return; | |
874 | ||
875 | if (LOG_PRI(priority) > s->max_level_store) | |
876 | return; | |
877 | ||
2f5df74a HHPF |
878 | /* Stop early in case the information will not be stored |
879 | * in a journal. */ | |
880 | if (s->storage == STORAGE_NONE) | |
881 | return; | |
882 | ||
d025f1e4 ZJS |
883 | if (!ucred) |
884 | goto finish; | |
885 | ||
e9174f29 | 886 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path); |
7027ff61 | 887 | if (r < 0) |
d025f1e4 ZJS |
888 | goto finish; |
889 | ||
890 | /* example: /user/lennart/3/foobar | |
891 | * /system/dbus.service/foobar | |
892 | * | |
893 | * So let's cut of everything past the third /, since that is | |
894 | * where user directories start */ | |
895 | ||
896 | c = strchr(path, '/'); | |
897 | if (c) { | |
898 | c = strchr(c+1, '/'); | |
899 | if (c) { | |
900 | c = strchr(c+1, '/'); | |
901 | if (c) | |
902 | *c = 0; | |
903 | } | |
904 | } | |
905 | ||
db91ea32 | 906 | rl = journal_rate_limit_test(s->rate_limit, path, |
670b110c | 907 | priority & LOG_PRIMASK, available_space(s, false)); |
d025f1e4 | 908 | |
db91ea32 | 909 | if (rl == 0) |
d025f1e4 | 910 | return; |
d025f1e4 ZJS |
911 | |
912 | /* Write a suppression message if we suppressed something */ | |
913 | if (rl > 1) | |
db91ea32 ZJS |
914 | server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, |
915 | "Suppressed %u messages from %s", rl - 1, path); | |
d025f1e4 ZJS |
916 | |
917 | finish: | |
d07f7b9e | 918 | dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id, priority, object_pid); |
d025f1e4 ZJS |
919 | } |
920 | ||
921 | ||
922 | static int system_journal_open(Server *s) { | |
923 | int r; | |
924 | char *fn; | |
925 | sd_id128_t machine; | |
926 | char ids[33]; | |
927 | ||
928 | r = sd_id128_get_machine(&machine); | |
00a16861 OB |
929 | if (r < 0) { |
930 | log_error("Failed to get machine id: %s", strerror(-r)); | |
d025f1e4 | 931 | return r; |
00a16861 | 932 | } |
d025f1e4 ZJS |
933 | |
934 | sd_id128_to_string(machine, ids); | |
935 | ||
936 | if (!s->system_journal && | |
937 | (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) && | |
938 | access("/run/systemd/journal/flushed", F_OK) >= 0) { | |
939 | ||
940 | /* If in auto mode: first try to create the machine | |
941 | * path, but not the prefix. | |
942 | * | |
943 | * If in persistent mode: create /var/log/journal and | |
944 | * the machine path */ | |
945 | ||
946 | if (s->storage == STORAGE_PERSISTENT) | |
947 | (void) mkdir("/var/log/journal/", 0755); | |
948 | ||
e40ec7ae | 949 | fn = strappenda("/var/log/journal/", ids); |
d025f1e4 | 950 | (void) mkdir(fn, 0755); |
d025f1e4 | 951 | |
e40ec7ae | 952 | fn = strappenda(fn, "/system.journal"); |
d025f1e4 | 953 | r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &s->system_journal); |
d025f1e4 | 954 | |
670b110c | 955 | if (r >= 0) |
d025f1e4 | 956 | server_fix_perms(s, s->system_journal, 0); |
433dd100 LN |
957 | else if (r < 0) { |
958 | if (r != -ENOENT && r != -EROFS) | |
959 | log_warning("Failed to open system journal: %s", strerror(-r)); | |
e40ec7ae | 960 | |
433dd100 LN |
961 | r = 0; |
962 | } | |
d025f1e4 ZJS |
963 | } |
964 | ||
965 | if (!s->runtime_journal && | |
966 | (s->storage != STORAGE_NONE)) { | |
967 | ||
968 | fn = strjoin("/run/log/journal/", ids, "/system.journal", NULL); | |
969 | if (!fn) | |
970 | return -ENOMEM; | |
971 | ||
972 | if (s->system_journal) { | |
973 | ||
974 | /* Try to open the runtime journal, but only | |
975 | * if it already exists, so that we can flush | |
976 | * it into the system journal */ | |
977 | ||
978 | r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); | |
979 | free(fn); | |
980 | ||
981 | if (r < 0) { | |
982 | if (r != -ENOENT) | |
983 | log_warning("Failed to open runtime journal: %s", strerror(-r)); | |
984 | ||
985 | r = 0; | |
986 | } | |
987 | ||
988 | } else { | |
989 | ||
990 | /* OK, we really need the runtime journal, so create | |
991 | * it if necessary. */ | |
992 | ||
993 | (void) mkdir_parents(fn, 0755); | |
994 | r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); | |
995 | free(fn); | |
996 | ||
997 | if (r < 0) { | |
998 | log_error("Failed to open runtime journal: %s", strerror(-r)); | |
999 | return r; | |
1000 | } | |
1001 | } | |
1002 | ||
670b110c | 1003 | if (s->runtime_journal) |
d025f1e4 | 1004 | server_fix_perms(s, s->runtime_journal, 0); |
d025f1e4 ZJS |
1005 | } |
1006 | ||
670b110c ZJS |
1007 | available_space(s, true); |
1008 | ||
d025f1e4 ZJS |
1009 | return r; |
1010 | } | |
1011 | ||
1012 | int server_flush_to_var(Server *s) { | |
d025f1e4 ZJS |
1013 | sd_id128_t machine; |
1014 | sd_journal *j = NULL; | |
fbb63411 LP |
1015 | char ts[FORMAT_TIMESPAN_MAX]; |
1016 | usec_t start; | |
1017 | unsigned n = 0; | |
1018 | int r; | |
d025f1e4 ZJS |
1019 | |
1020 | assert(s); | |
1021 | ||
1022 | if (s->storage != STORAGE_AUTO && | |
1023 | s->storage != STORAGE_PERSISTENT) | |
1024 | return 0; | |
1025 | ||
1026 | if (!s->runtime_journal) | |
1027 | return 0; | |
1028 | ||
1029 | system_journal_open(s); | |
1030 | ||
1031 | if (!s->system_journal) | |
1032 | return 0; | |
1033 | ||
1034 | log_debug("Flushing to /var..."); | |
1035 | ||
fbb63411 LP |
1036 | start = now(CLOCK_MONOTONIC); |
1037 | ||
d025f1e4 | 1038 | r = sd_id128_get_machine(&machine); |
00a16861 | 1039 | if (r < 0) |
d025f1e4 | 1040 | return r; |
d025f1e4 ZJS |
1041 | |
1042 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
1043 | if (r < 0) { | |
1044 | log_error("Failed to read runtime journal: %s", strerror(-r)); | |
1045 | return r; | |
1046 | } | |
1047 | ||
93b73b06 LP |
1048 | sd_journal_set_data_threshold(j, 0); |
1049 | ||
d025f1e4 ZJS |
1050 | SD_JOURNAL_FOREACH(j) { |
1051 | Object *o = NULL; | |
1052 | JournalFile *f; | |
1053 | ||
1054 | f = j->current_file; | |
1055 | assert(f && f->current_offset > 0); | |
1056 | ||
fbb63411 LP |
1057 | n++; |
1058 | ||
d025f1e4 ZJS |
1059 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1060 | if (r < 0) { | |
1061 | log_error("Can't read entry: %s", strerror(-r)); | |
1062 | goto finish; | |
1063 | } | |
1064 | ||
1065 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1066 | if (r >= 0) | |
1067 | continue; | |
1068 | ||
1069 | if (!shall_try_append_again(s->system_journal, r)) { | |
1070 | log_error("Can't write entry: %s", strerror(-r)); | |
1071 | goto finish; | |
1072 | } | |
1073 | ||
1074 | server_rotate(s); | |
1075 | server_vacuum(s); | |
1076 | ||
253f59df LP |
1077 | if (!s->system_journal) { |
1078 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1079 | r = -EIO; | |
1080 | goto finish; | |
1081 | } | |
1082 | ||
d025f1e4 ZJS |
1083 | log_debug("Retrying write."); |
1084 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1085 | if (r < 0) { | |
1086 | log_error("Can't write entry: %s", strerror(-r)); | |
1087 | goto finish; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | finish: | |
1092 | journal_file_post_change(s->system_journal); | |
1093 | ||
1094 | journal_file_close(s->runtime_journal); | |
1095 | s->runtime_journal = NULL; | |
1096 | ||
1097 | if (r >= 0) | |
1098 | rm_rf("/run/log/journal", false, true, false); | |
1099 | ||
763c7aa2 | 1100 | sd_journal_close(j); |
d025f1e4 | 1101 | |
fbb63411 LP |
1102 | server_driver_message(s, SD_ID128_NULL, "Time spent on flushing to /var is %s for %u entries.", format_timespan(ts, sizeof(ts), now(CLOCK_MONOTONIC) - start, 0), n); |
1103 | ||
d025f1e4 ZJS |
1104 | return r; |
1105 | } | |
1106 | ||
f9a810be LP |
1107 | int process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1108 | Server *s = userdata; | |
1109 | ||
d025f1e4 | 1110 | assert(s); |
f9a810be LP |
1111 | assert(fd == s->native_fd || fd == s->syslog_fd); |
1112 | ||
1113 | if (revents != EPOLLIN) { | |
1114 | log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents); | |
1115 | return -EIO; | |
1116 | } | |
1117 | ||
1118 | for (;;) { | |
1119 | struct ucred *ucred = NULL; | |
1120 | struct timeval *tv = NULL; | |
1121 | struct cmsghdr *cmsg; | |
1122 | char *label = NULL; | |
1123 | size_t label_len = 0; | |
1124 | struct iovec iovec; | |
1125 | ||
1126 | union { | |
1127 | struct cmsghdr cmsghdr; | |
1128 | ||
bdd13f6b ZJS |
1129 | /* We use NAME_MAX space for the SELinux label |
1130 | * here. The kernel currently enforces no | |
1131 | * limit, but according to suggestions from | |
1132 | * the SELinux people this will change and it | |
1133 | * will probably be identical to NAME_MAX. For | |
1134 | * now we use that, but this should be updated | |
1135 | * one day when the final limit is known.*/ | |
f9a810be LP |
1136 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + |
1137 | CMSG_SPACE(sizeof(struct timeval)) + | |
1138 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1139 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1140 | } control = {}; | |
1141 | struct msghdr msghdr = { | |
1142 | .msg_iov = &iovec, | |
1143 | .msg_iovlen = 1, | |
1144 | .msg_control = &control, | |
1145 | .msg_controllen = sizeof(control), | |
1146 | }; | |
d025f1e4 | 1147 | |
d025f1e4 | 1148 | ssize_t n; |
f9a810be LP |
1149 | int v; |
1150 | int *fds = NULL; | |
1151 | unsigned n_fds = 0; | |
d025f1e4 | 1152 | |
f9a810be LP |
1153 | if (ioctl(fd, SIOCINQ, &v) < 0) { |
1154 | log_error("SIOCINQ failed: %m"); | |
1155 | return -errno; | |
d025f1e4 ZJS |
1156 | } |
1157 | ||
f9a810be LP |
1158 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, LINE_MAX + (size_t) v)) |
1159 | return log_oom(); | |
d025f1e4 | 1160 | |
f9a810be LP |
1161 | iovec.iov_base = s->buffer; |
1162 | iovec.iov_len = s->buffer_size; | |
d025f1e4 | 1163 | |
f9a810be LP |
1164 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1165 | if (n < 0) { | |
d025f1e4 | 1166 | if (errno == EINTR || errno == EAGAIN) |
f9a810be | 1167 | return 0; |
d025f1e4 | 1168 | |
f9a810be | 1169 | log_error("recvmsg() failed: %m"); |
d025f1e4 ZJS |
1170 | return -errno; |
1171 | } | |
1172 | ||
f9a810be LP |
1173 | for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) { |
1174 | ||
1175 | if (cmsg->cmsg_level == SOL_SOCKET && | |
1176 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1177 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) | |
1178 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1179 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1180 | cmsg->cmsg_type == SCM_SECURITY) { | |
1181 | label = (char*) CMSG_DATA(cmsg); | |
1182 | label_len = cmsg->cmsg_len - CMSG_LEN(0); | |
1183 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1184 | cmsg->cmsg_type == SO_TIMESTAMP && | |
1185 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval))) | |
1186 | tv = (struct timeval*) CMSG_DATA(cmsg); | |
1187 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1188 | cmsg->cmsg_type == SCM_RIGHTS) { | |
1189 | fds = (int*) CMSG_DATA(cmsg); | |
1190 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
1191 | } | |
d025f1e4 ZJS |
1192 | } |
1193 | ||
f9a810be LP |
1194 | if (fd == s->syslog_fd) { |
1195 | if (n > 0 && n_fds == 0) { | |
1196 | s->buffer[n] = 0; | |
1197 | server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len); | |
1198 | } else if (n_fds > 0) | |
1199 | log_warning("Got file descriptors via syslog socket. Ignoring."); | |
d025f1e4 | 1200 | |
f9a810be LP |
1201 | } else { |
1202 | if (n > 0 && n_fds == 0) | |
1203 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1204 | else if (n == 0 && n_fds == 1) | |
1205 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1206 | else if (n_fds > 0) | |
1207 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
d025f1e4 ZJS |
1208 | } |
1209 | ||
f9a810be LP |
1210 | close_many(fds, n_fds); |
1211 | } | |
f9a810be | 1212 | } |
d025f1e4 | 1213 | |
f9a810be LP |
1214 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1215 | Server *s = userdata; | |
d025f1e4 | 1216 | |
f9a810be | 1217 | assert(s); |
d025f1e4 | 1218 | |
f9a810be | 1219 | log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid); |
d025f1e4 | 1220 | |
f9a810be LP |
1221 | touch("/run/systemd/journal/flushed"); |
1222 | server_flush_to_var(s); | |
1223 | server_sync(s); | |
d025f1e4 | 1224 | |
f9a810be LP |
1225 | return 0; |
1226 | } | |
d025f1e4 | 1227 | |
f9a810be LP |
1228 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1229 | Server *s = userdata; | |
d025f1e4 | 1230 | |
f9a810be | 1231 | assert(s); |
d025f1e4 | 1232 | |
f9a810be LP |
1233 | log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid); |
1234 | server_rotate(s); | |
1235 | server_vacuum(s); | |
d025f1e4 | 1236 | |
f9a810be LP |
1237 | return 0; |
1238 | } | |
d025f1e4 | 1239 | |
f9a810be LP |
1240 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1241 | Server *s = userdata; | |
d025f1e4 | 1242 | |
f9a810be | 1243 | assert(s); |
d025f1e4 | 1244 | |
4daf54a8 | 1245 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1246 | |
6203e07a | 1247 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1248 | return 0; |
1249 | } | |
1250 | ||
f9a810be | 1251 | static int setup_signals(Server *s) { |
d025f1e4 | 1252 | sigset_t mask; |
f9a810be | 1253 | int r; |
d025f1e4 ZJS |
1254 | |
1255 | assert(s); | |
1256 | ||
1257 | assert_se(sigemptyset(&mask) == 0); | |
1258 | sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1); | |
1259 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); | |
1260 | ||
151b9b96 | 1261 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1262 | if (r < 0) |
1263 | return r; | |
1264 | ||
151b9b96 | 1265 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1266 | if (r < 0) |
1267 | return r; | |
d025f1e4 | 1268 | |
151b9b96 | 1269 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1270 | if (r < 0) |
1271 | return r; | |
d025f1e4 | 1272 | |
151b9b96 | 1273 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1274 | if (r < 0) |
1275 | return r; | |
d025f1e4 ZJS |
1276 | |
1277 | return 0; | |
1278 | } | |
1279 | ||
1280 | static int server_parse_proc_cmdline(Server *s) { | |
7fd1b19b | 1281 | _cleanup_free_ char *line = NULL; |
db91ea32 | 1282 | char *w, *state; |
d025f1e4 | 1283 | size_t l; |
74df0fca | 1284 | int r; |
d025f1e4 | 1285 | |
74df0fca LP |
1286 | r = proc_cmdline(&line); |
1287 | if (r < 0) | |
d025f1e4 | 1288 | log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); |
74df0fca | 1289 | if (r <= 0) |
d025f1e4 | 1290 | return 0; |
d025f1e4 ZJS |
1291 | |
1292 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
7fd1b19b | 1293 | _cleanup_free_ char *word; |
d025f1e4 ZJS |
1294 | |
1295 | word = strndup(w, l); | |
db91ea32 ZJS |
1296 | if (!word) |
1297 | return -ENOMEM; | |
d025f1e4 ZJS |
1298 | |
1299 | if (startswith(word, "systemd.journald.forward_to_syslog=")) { | |
1300 | r = parse_boolean(word + 35); | |
1301 | if (r < 0) | |
1302 | log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35); | |
1303 | else | |
1304 | s->forward_to_syslog = r; | |
1305 | } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) { | |
1306 | r = parse_boolean(word + 33); | |
1307 | if (r < 0) | |
1308 | log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33); | |
1309 | else | |
1310 | s->forward_to_kmsg = r; | |
1311 | } else if (startswith(word, "systemd.journald.forward_to_console=")) { | |
1312 | r = parse_boolean(word + 36); | |
1313 | if (r < 0) | |
1314 | log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36); | |
1315 | else | |
1316 | s->forward_to_console = r; | |
40b71e89 ST |
1317 | } else if (startswith(word, "systemd.journald.forward_to_wall=")) { |
1318 | r = parse_boolean(word + 33); | |
1319 | if (r < 0) | |
1320 | log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33); | |
1321 | else | |
1322 | s->forward_to_wall = r; | |
d025f1e4 ZJS |
1323 | } else if (startswith(word, "systemd.journald")) |
1324 | log_warning("Invalid systemd.journald parameter. Ignoring."); | |
d025f1e4 ZJS |
1325 | } |
1326 | ||
db91ea32 | 1327 | return 0; |
d025f1e4 ZJS |
1328 | } |
1329 | ||
1330 | static int server_parse_config_file(Server *s) { | |
db5c0122 | 1331 | static const char fn[] = "/etc/systemd/journald.conf"; |
7fd1b19b | 1332 | _cleanup_fclose_ FILE *f = NULL; |
d025f1e4 ZJS |
1333 | int r; |
1334 | ||
1335 | assert(s); | |
1336 | ||
d025f1e4 ZJS |
1337 | f = fopen(fn, "re"); |
1338 | if (!f) { | |
1339 | if (errno == ENOENT) | |
1340 | return 0; | |
1341 | ||
1342 | log_warning("Failed to open configuration file %s: %m", fn); | |
1343 | return -errno; | |
1344 | } | |
1345 | ||
e8e581bf | 1346 | r = config_parse(NULL, fn, f, "Journal\0", config_item_perf_lookup, |
db5c0122 | 1347 | (void*) journald_gperf_lookup, false, false, s); |
d025f1e4 ZJS |
1348 | if (r < 0) |
1349 | log_warning("Failed to parse configuration file: %s", strerror(-r)); | |
1350 | ||
d025f1e4 ZJS |
1351 | return r; |
1352 | } | |
1353 | ||
f9a810be LP |
1354 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1355 | Server *s = userdata; | |
26687bf8 OS |
1356 | |
1357 | assert(s); | |
1358 | ||
f9a810be | 1359 | server_sync(s); |
26687bf8 OS |
1360 | return 0; |
1361 | } | |
1362 | ||
d07f7b9e | 1363 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1364 | int r; |
1365 | ||
26687bf8 OS |
1366 | assert(s); |
1367 | ||
d07f7b9e LP |
1368 | if (priority <= LOG_CRIT) { |
1369 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1370 | server_sync(s); | |
1371 | return 0; | |
1372 | } | |
1373 | ||
26687bf8 OS |
1374 | if (s->sync_scheduled) |
1375 | return 0; | |
1376 | ||
f9a810be LP |
1377 | if (s->sync_interval_usec > 0) { |
1378 | usec_t when; | |
ca267016 | 1379 | |
6a0f1f6d | 1380 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1381 | if (r < 0) |
1382 | return r; | |
26687bf8 | 1383 | |
f9a810be LP |
1384 | when += s->sync_interval_usec; |
1385 | ||
1386 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1387 | r = sd_event_add_time( |
1388 | s->event, | |
1389 | &s->sync_event_source, | |
1390 | CLOCK_MONOTONIC, | |
1391 | when, 0, | |
1392 | server_dispatch_sync, s); | |
f9a810be LP |
1393 | if (r < 0) |
1394 | return r; | |
1395 | ||
1396 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1397 | } else { | |
1398 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1399 | if (r < 0) | |
1400 | return r; | |
1401 | ||
1402 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1403 | } | |
26687bf8 | 1404 | if (r < 0) |
f9a810be | 1405 | return r; |
26687bf8 | 1406 | |
f9a810be LP |
1407 | s->sync_scheduled = true; |
1408 | } | |
26687bf8 OS |
1409 | |
1410 | return 0; | |
1411 | } | |
1412 | ||
0c24bb23 LP |
1413 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1414 | Server *s = userdata; | |
1415 | ||
1416 | assert(s); | |
1417 | ||
1418 | server_cache_hostname(s); | |
1419 | return 0; | |
1420 | } | |
1421 | ||
1422 | static int server_open_hostname(Server *s) { | |
1423 | int r; | |
1424 | ||
1425 | assert(s); | |
1426 | ||
1427 | s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY); | |
1428 | if (s->hostname_fd < 0) { | |
1429 | log_error("Failed to open /proc/sys/kernel/hostname: %m"); | |
1430 | return -errno; | |
1431 | } | |
1432 | ||
151b9b96 | 1433 | r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s); |
0c24bb23 | 1434 | if (r < 0) { |
28def94c DR |
1435 | /* kernels prior to 3.2 don't support polling this file. Ignore |
1436 | * the failure. */ | |
1437 | if (r == -EPERM) { | |
1438 | log_warning("Failed to register hostname fd in event loop: %s. Ignoring.", | |
1439 | strerror(-r)); | |
03e334a1 | 1440 | s->hostname_fd = safe_close(s->hostname_fd); |
28def94c DR |
1441 | return 0; |
1442 | } | |
1443 | ||
0c24bb23 LP |
1444 | log_error("Failed to register hostname fd in event loop: %s", strerror(-r)); |
1445 | return r; | |
1446 | } | |
1447 | ||
1448 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
1449 | if (r < 0) { | |
1450 | log_error("Failed to adjust priority of host name event source: %s", strerror(-r)); | |
1451 | return r; | |
1452 | } | |
1453 | ||
1454 | return 0; | |
1455 | } | |
1456 | ||
d025f1e4 ZJS |
1457 | int server_init(Server *s) { |
1458 | int n, r, fd; | |
1459 | ||
1460 | assert(s); | |
1461 | ||
1462 | zero(*s); | |
0c24bb23 | 1463 | s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->hostname_fd = -1; |
d025f1e4 ZJS |
1464 | s->compress = true; |
1465 | s->seal = true; | |
1466 | ||
26687bf8 OS |
1467 | s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC; |
1468 | s->sync_scheduled = false; | |
1469 | ||
d025f1e4 ZJS |
1470 | s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL; |
1471 | s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST; | |
1472 | ||
1473 | s->forward_to_syslog = true; | |
40b71e89 | 1474 | s->forward_to_wall = true; |
d025f1e4 ZJS |
1475 | |
1476 | s->max_level_store = LOG_DEBUG; | |
1477 | s->max_level_syslog = LOG_DEBUG; | |
1478 | s->max_level_kmsg = LOG_NOTICE; | |
1479 | s->max_level_console = LOG_INFO; | |
40b71e89 | 1480 | s->max_level_wall = LOG_EMERG; |
d025f1e4 ZJS |
1481 | |
1482 | memset(&s->system_metrics, 0xFF, sizeof(s->system_metrics)); | |
1483 | memset(&s->runtime_metrics, 0xFF, sizeof(s->runtime_metrics)); | |
1484 | ||
1485 | server_parse_config_file(s); | |
1486 | server_parse_proc_cmdline(s); | |
d288f79f ZJS |
1487 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
1488 | log_debug("Setting both rate limit interval and burst from %llu,%u to 0,0", | |
1489 | (long long unsigned) s->rate_limit_interval, | |
1490 | s->rate_limit_burst); | |
1491 | s->rate_limit_interval = s->rate_limit_burst = 0; | |
1492 | } | |
d025f1e4 ZJS |
1493 | |
1494 | mkdir_p("/run/systemd/journal", 0755); | |
1495 | ||
1496 | s->user_journals = hashmap_new(trivial_hash_func, trivial_compare_func); | |
1497 | if (!s->user_journals) | |
1498 | return log_oom(); | |
1499 | ||
1500 | s->mmap = mmap_cache_new(); | |
1501 | if (!s->mmap) | |
1502 | return log_oom(); | |
1503 | ||
f9a810be LP |
1504 | r = sd_event_default(&s->event); |
1505 | if (r < 0) { | |
1506 | log_error("Failed to create event loop: %s", strerror(-r)); | |
1507 | return r; | |
d025f1e4 ZJS |
1508 | } |
1509 | ||
f9a810be LP |
1510 | sd_event_set_watchdog(s->event, true); |
1511 | ||
d025f1e4 ZJS |
1512 | n = sd_listen_fds(true); |
1513 | if (n < 0) { | |
1514 | log_error("Failed to read listening file descriptors from environment: %s", strerror(-n)); | |
1515 | return n; | |
1516 | } | |
1517 | ||
1518 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
1519 | ||
1520 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
1521 | ||
1522 | if (s->native_fd >= 0) { | |
1523 | log_error("Too many native sockets passed."); | |
1524 | return -EINVAL; | |
1525 | } | |
1526 | ||
1527 | s->native_fd = fd; | |
1528 | ||
1529 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
1530 | ||
1531 | if (s->stdout_fd >= 0) { | |
1532 | log_error("Too many stdout sockets passed."); | |
1533 | return -EINVAL; | |
1534 | } | |
1535 | ||
1536 | s->stdout_fd = fd; | |
1537 | ||
1538 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0) { | |
1539 | ||
1540 | if (s->syslog_fd >= 0) { | |
1541 | log_error("Too many /dev/log sockets passed."); | |
1542 | return -EINVAL; | |
1543 | } | |
1544 | ||
1545 | s->syslog_fd = fd; | |
1546 | ||
1547 | } else { | |
1548 | log_error("Unknown socket passed."); | |
1549 | return -EINVAL; | |
1550 | } | |
1551 | } | |
1552 | ||
1553 | r = server_open_syslog_socket(s); | |
1554 | if (r < 0) | |
1555 | return r; | |
1556 | ||
1557 | r = server_open_native_socket(s); | |
1558 | if (r < 0) | |
1559 | return r; | |
1560 | ||
1561 | r = server_open_stdout_socket(s); | |
1562 | if (r < 0) | |
1563 | return r; | |
1564 | ||
1565 | r = server_open_dev_kmsg(s); | |
1566 | if (r < 0) | |
1567 | return r; | |
1568 | ||
1569 | r = server_open_kernel_seqnum(s); | |
1570 | if (r < 0) | |
1571 | return r; | |
1572 | ||
0c24bb23 LP |
1573 | r = server_open_hostname(s); |
1574 | if (r < 0) | |
1575 | return r; | |
1576 | ||
f9a810be | 1577 | r = setup_signals(s); |
d025f1e4 ZJS |
1578 | if (r < 0) |
1579 | return r; | |
1580 | ||
1581 | s->udev = udev_new(); | |
1582 | if (!s->udev) | |
1583 | return -ENOMEM; | |
1584 | ||
f9a810be | 1585 | s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst); |
d025f1e4 ZJS |
1586 | if (!s->rate_limit) |
1587 | return -ENOMEM; | |
1588 | ||
e9174f29 LP |
1589 | r = cg_get_root_path(&s->cgroup_root); |
1590 | if (r < 0) | |
1591 | return r; | |
1592 | ||
0c24bb23 LP |
1593 | server_cache_hostname(s); |
1594 | server_cache_boot_id(s); | |
1595 | server_cache_machine_id(s); | |
1596 | ||
d025f1e4 ZJS |
1597 | r = system_journal_open(s); |
1598 | if (r < 0) | |
1599 | return r; | |
1600 | ||
1601 | return 0; | |
1602 | } | |
1603 | ||
1604 | void server_maybe_append_tags(Server *s) { | |
1605 | #ifdef HAVE_GCRYPT | |
1606 | JournalFile *f; | |
1607 | Iterator i; | |
1608 | usec_t n; | |
1609 | ||
1610 | n = now(CLOCK_REALTIME); | |
1611 | ||
1612 | if (s->system_journal) | |
1613 | journal_file_maybe_append_tag(s->system_journal, n); | |
1614 | ||
1615 | HASHMAP_FOREACH(f, s->user_journals, i) | |
1616 | journal_file_maybe_append_tag(f, n); | |
1617 | #endif | |
1618 | } | |
1619 | ||
1620 | void server_done(Server *s) { | |
1621 | JournalFile *f; | |
1622 | assert(s); | |
1623 | ||
1624 | while (s->stdout_streams) | |
1625 | stdout_stream_free(s->stdout_streams); | |
1626 | ||
1627 | if (s->system_journal) | |
1628 | journal_file_close(s->system_journal); | |
1629 | ||
1630 | if (s->runtime_journal) | |
1631 | journal_file_close(s->runtime_journal); | |
1632 | ||
1633 | while ((f = hashmap_steal_first(s->user_journals))) | |
1634 | journal_file_close(f); | |
1635 | ||
1636 | hashmap_free(s->user_journals); | |
1637 | ||
f9a810be LP |
1638 | sd_event_source_unref(s->syslog_event_source); |
1639 | sd_event_source_unref(s->native_event_source); | |
1640 | sd_event_source_unref(s->stdout_event_source); | |
1641 | sd_event_source_unref(s->dev_kmsg_event_source); | |
1642 | sd_event_source_unref(s->sync_event_source); | |
1643 | sd_event_source_unref(s->sigusr1_event_source); | |
1644 | sd_event_source_unref(s->sigusr2_event_source); | |
1645 | sd_event_source_unref(s->sigterm_event_source); | |
1646 | sd_event_source_unref(s->sigint_event_source); | |
0c24bb23 | 1647 | sd_event_source_unref(s->hostname_event_source); |
f9a810be | 1648 | sd_event_unref(s->event); |
d025f1e4 | 1649 | |
03e334a1 LP |
1650 | safe_close(s->syslog_fd); |
1651 | safe_close(s->native_fd); | |
1652 | safe_close(s->stdout_fd); | |
1653 | safe_close(s->dev_kmsg_fd); | |
1654 | safe_close(s->hostname_fd); | |
0c24bb23 | 1655 | |
d025f1e4 ZJS |
1656 | if (s->rate_limit) |
1657 | journal_rate_limit_free(s->rate_limit); | |
1658 | ||
1659 | if (s->kernel_seqnum) | |
1660 | munmap(s->kernel_seqnum, sizeof(uint64_t)); | |
1661 | ||
1662 | free(s->buffer); | |
1663 | free(s->tty_path); | |
e9174f29 | 1664 | free(s->cgroup_root); |
d025f1e4 ZJS |
1665 | |
1666 | if (s->mmap) | |
1667 | mmap_cache_unref(s->mmap); | |
1668 | ||
1669 | if (s->udev) | |
1670 | udev_unref(s->udev); | |
1671 | } |