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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 | |
e150e820 | 70 | #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH |
d025f1e4 ZJS |
71 | |
72 | #define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC) | |
73 | ||
2c5859af | 74 | static const char* const storage_table[_STORAGE_MAX] = { |
d025f1e4 ZJS |
75 | [STORAGE_AUTO] = "auto", |
76 | [STORAGE_VOLATILE] = "volatile", | |
77 | [STORAGE_PERSISTENT] = "persistent", | |
78 | [STORAGE_NONE] = "none" | |
79 | }; | |
80 | ||
81 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
82 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
83 | ||
2c5859af DM |
84 | static const char* const split_mode_table[_SPLIT_MAX] = { |
85 | [SPLIT_LOGIN] = "login", | |
d025f1e4 | 86 | [SPLIT_UID] = "uid", |
2c5859af | 87 | [SPLIT_NONE] = "none", |
d025f1e4 ZJS |
88 | }; |
89 | ||
90 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
91 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); | |
92 | ||
670b110c | 93 | static uint64_t available_space(Server *s, bool verbose) { |
db91ea32 | 94 | char ids[33]; |
7fd1b19b | 95 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
96 | sd_id128_t machine; |
97 | struct statvfs ss; | |
670b110c | 98 | uint64_t sum = 0, ss_avail = 0, avail = 0; |
d025f1e4 | 99 | int r; |
7fd1b19b | 100 | _cleanup_closedir_ DIR *d = NULL; |
d025f1e4 | 101 | usec_t ts; |
670b110c | 102 | const char *f; |
d025f1e4 ZJS |
103 | JournalMetrics *m; |
104 | ||
105 | ts = now(CLOCK_MONOTONIC); | |
106 | ||
670b110c ZJS |
107 | if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts |
108 | && !verbose) | |
d025f1e4 ZJS |
109 | return s->cached_available_space; |
110 | ||
111 | r = sd_id128_get_machine(&machine); | |
112 | if (r < 0) | |
113 | return 0; | |
114 | ||
115 | if (s->system_journal) { | |
116 | f = "/var/log/journal/"; | |
117 | m = &s->system_metrics; | |
118 | } else { | |
119 | f = "/run/log/journal/"; | |
120 | m = &s->runtime_metrics; | |
121 | } | |
122 | ||
123 | assert(m); | |
124 | ||
125 | p = strappend(f, sd_id128_to_string(machine, ids)); | |
126 | if (!p) | |
127 | return 0; | |
128 | ||
129 | d = opendir(p); | |
d025f1e4 ZJS |
130 | if (!d) |
131 | return 0; | |
132 | ||
133 | if (fstatvfs(dirfd(d), &ss) < 0) | |
db91ea32 | 134 | return 0; |
d025f1e4 ZJS |
135 | |
136 | for (;;) { | |
137 | struct stat st; | |
138 | struct dirent *de; | |
d025f1e4 | 139 | |
0371ca0d FW |
140 | errno = 0; |
141 | de = readdir(d); | |
142 | if (!de && errno != 0) | |
143 | return 0; | |
d025f1e4 ZJS |
144 | |
145 | if (!de) | |
146 | break; | |
147 | ||
148 | if (!endswith(de->d_name, ".journal") && | |
149 | !endswith(de->d_name, ".journal~")) | |
150 | continue; | |
151 | ||
152 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) | |
153 | continue; | |
154 | ||
155 | if (!S_ISREG(st.st_mode)) | |
156 | continue; | |
157 | ||
158 | sum += (uint64_t) st.st_blocks * 512UL; | |
159 | } | |
160 | ||
d025f1e4 ZJS |
161 | ss_avail = ss.f_bsize * ss.f_bavail; |
162 | ||
348ced90 ZJS |
163 | /* If we reached a high mark, we will always allow this much |
164 | * again, unless usage goes above max_use. This watermark | |
165 | * value is cached so that we don't give up space on pressure, | |
166 | * but hover below the maximum usage. */ | |
167 | ||
168 | if (m->use < sum) | |
169 | m->use = sum; | |
170 | ||
171 | avail = LESS_BY(ss_avail, m->keep_free); | |
172 | ||
173 | s->cached_available_space = LESS_BY(MIN(m->max_use, avail), sum); | |
d025f1e4 ZJS |
174 | s->cached_available_space_timestamp = ts; |
175 | ||
670b110c ZJS |
176 | if (verbose) { |
177 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
178 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX]; | |
179 | ||
180 | server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE, | |
348ced90 ZJS |
181 | "%s journal is using %s (max allowed %s, " |
182 | "trying to leave %s free of %s available → current limit %s).", | |
670b110c ZJS |
183 | s->system_journal ? "Permanent" : "Runtime", |
184 | format_bytes(fb1, sizeof(fb1), sum), | |
185 | format_bytes(fb2, sizeof(fb2), m->max_use), | |
186 | format_bytes(fb3, sizeof(fb3), m->keep_free), | |
187 | format_bytes(fb4, sizeof(fb4), ss_avail), | |
348ced90 | 188 | format_bytes(fb5, sizeof(fb5), s->cached_available_space + sum)); |
670b110c ZJS |
189 | } |
190 | ||
191 | return s->cached_available_space; | |
d025f1e4 ZJS |
192 | } |
193 | ||
d025f1e4 ZJS |
194 | void server_fix_perms(Server *s, JournalFile *f, uid_t uid) { |
195 | int r; | |
196 | #ifdef HAVE_ACL | |
197 | acl_t acl; | |
198 | acl_entry_t entry; | |
199 | acl_permset_t permset; | |
200 | #endif | |
201 | ||
202 | assert(f); | |
203 | ||
4608af43 | 204 | r = fchmod(f->fd, 0640); |
d025f1e4 | 205 | if (r < 0) |
4608af43 | 206 | log_warning("Failed to fix access mode on %s, ignoring: %s", f->path, strerror(-r)); |
d025f1e4 ZJS |
207 | |
208 | #ifdef HAVE_ACL | |
34c10968 | 209 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
210 | return; |
211 | ||
212 | acl = acl_get_fd(f->fd); | |
213 | if (!acl) { | |
214 | log_warning("Failed to read ACL on %s, ignoring: %m", f->path); | |
215 | return; | |
216 | } | |
217 | ||
218 | r = acl_find_uid(acl, uid, &entry); | |
219 | if (r <= 0) { | |
220 | ||
221 | if (acl_create_entry(&acl, &entry) < 0 || | |
222 | acl_set_tag_type(entry, ACL_USER) < 0 || | |
223 | acl_set_qualifier(entry, &uid) < 0) { | |
224 | log_warning("Failed to patch ACL on %s, ignoring: %m", f->path); | |
225 | goto finish; | |
226 | } | |
227 | } | |
228 | ||
23ad4dd8 JAS |
229 | /* We do not recalculate the mask unconditionally here, |
230 | * so that the fchmod() mask above stays intact. */ | |
d025f1e4 | 231 | if (acl_get_permset(entry, &permset) < 0 || |
23ad4dd8 JAS |
232 | acl_add_perm(permset, ACL_READ) < 0 || |
233 | calc_acl_mask_if_needed(&acl) < 0) { | |
d025f1e4 ZJS |
234 | log_warning("Failed to patch ACL on %s, ignoring: %m", f->path); |
235 | goto finish; | |
236 | } | |
237 | ||
238 | if (acl_set_fd(f->fd, acl) < 0) | |
239 | log_warning("Failed to set ACL on %s, ignoring: %m", f->path); | |
240 | ||
241 | finish: | |
242 | acl_free(acl); | |
243 | #endif | |
244 | } | |
245 | ||
246 | static JournalFile* find_journal(Server *s, uid_t uid) { | |
ed375beb | 247 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
248 | int r; |
249 | JournalFile *f; | |
250 | sd_id128_t machine; | |
251 | ||
252 | assert(s); | |
253 | ||
254 | /* We split up user logs only on /var, not on /run. If the | |
255 | * runtime file is open, we write to it exclusively, in order | |
256 | * to guarantee proper order as soon as we flush /run to | |
257 | * /var and close the runtime file. */ | |
258 | ||
259 | if (s->runtime_journal) | |
260 | return s->runtime_journal; | |
261 | ||
f7dc3ab9 | 262 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
263 | return s->system_journal; |
264 | ||
265 | r = sd_id128_get_machine(&machine); | |
266 | if (r < 0) | |
267 | return s->system_journal; | |
268 | ||
269 | f = hashmap_get(s->user_journals, UINT32_TO_PTR(uid)); | |
270 | if (f) | |
271 | return f; | |
272 | ||
de0671ee ZJS |
273 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
274 | SD_ID128_FORMAT_VAL(machine), uid) < 0) | |
d025f1e4 ZJS |
275 | return s->system_journal; |
276 | ||
277 | while (hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { | |
278 | /* Too many open? Then let's close one */ | |
279 | f = hashmap_steal_first(s->user_journals); | |
280 | assert(f); | |
281 | journal_file_close(f); | |
282 | } | |
283 | ||
cbd67177 | 284 | r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f); |
d025f1e4 ZJS |
285 | if (r < 0) |
286 | return s->system_journal; | |
287 | ||
288 | server_fix_perms(s, f, uid); | |
289 | ||
290 | r = hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f); | |
291 | if (r < 0) { | |
292 | journal_file_close(f); | |
293 | return s->system_journal; | |
294 | } | |
295 | ||
296 | return f; | |
297 | } | |
298 | ||
fc55baee ZJS |
299 | static int do_rotate(Server *s, JournalFile **f, const char* name, |
300 | bool seal, uint32_t uid) { | |
301 | int r; | |
302 | assert(s); | |
303 | ||
304 | if (!*f) | |
305 | return -EINVAL; | |
306 | ||
307 | r = journal_file_rotate(f, s->compress, seal); | |
308 | if (r < 0) | |
309 | if (*f) | |
310 | log_error("Failed to rotate %s: %s", | |
311 | (*f)->path, strerror(-r)); | |
312 | else | |
313 | log_error("Failed to create new %s journal: %s", | |
314 | name, strerror(-r)); | |
315 | else | |
316 | server_fix_perms(s, *f, uid); | |
317 | return r; | |
318 | } | |
319 | ||
d025f1e4 ZJS |
320 | void server_rotate(Server *s) { |
321 | JournalFile *f; | |
322 | void *k; | |
323 | Iterator i; | |
324 | int r; | |
325 | ||
326 | log_debug("Rotating..."); | |
327 | ||
fc55baee ZJS |
328 | do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
329 | do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 ZJS |
330 | |
331 | HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { | |
fc55baee ZJS |
332 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k)); |
333 | if (r >= 0) | |
d025f1e4 | 334 | hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
335 | else if (!f) |
336 | /* Old file has been closed and deallocated */ | |
337 | hashmap_remove(s->user_journals, k); | |
d025f1e4 ZJS |
338 | } |
339 | } | |
340 | ||
26687bf8 OS |
341 | void server_sync(Server *s) { |
342 | JournalFile *f; | |
343 | void *k; | |
344 | Iterator i; | |
345 | int r; | |
346 | ||
26687bf8 OS |
347 | if (s->system_journal) { |
348 | r = journal_file_set_offline(s->system_journal); | |
349 | if (r < 0) | |
350 | log_error("Failed to sync system journal: %s", strerror(-r)); | |
351 | } | |
352 | ||
353 | HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { | |
354 | r = journal_file_set_offline(f); | |
355 | if (r < 0) | |
356 | log_error("Failed to sync user journal: %s", strerror(-r)); | |
357 | } | |
358 | ||
f9a810be LP |
359 | if (s->sync_event_source) { |
360 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
361 | if (r < 0) | |
362 | log_error("Failed to disable sync timer source: %s", strerror(-r)); | |
363 | } | |
26687bf8 OS |
364 | |
365 | s->sync_scheduled = false; | |
366 | } | |
367 | ||
63c8666b ZJS |
368 | static void do_vacuum(Server *s, char *ids, JournalFile *f, const char* path, |
369 | JournalMetrics *metrics) { | |
370 | char *p; | |
371 | int r; | |
372 | ||
373 | if (!f) | |
374 | return; | |
375 | ||
376 | p = strappenda(path, ids); | |
377 | r = journal_directory_vacuum(p, metrics->max_use, s->max_retention_usec, &s->oldest_file_usec); | |
378 | if (r < 0 && r != -ENOENT) | |
379 | log_error("Failed to vacuum %s: %s", p, strerror(-r)); | |
380 | } | |
381 | ||
d025f1e4 | 382 | void server_vacuum(Server *s) { |
d025f1e4 ZJS |
383 | char ids[33]; |
384 | sd_id128_t machine; | |
385 | int r; | |
386 | ||
387 | log_debug("Vacuuming..."); | |
388 | ||
389 | s->oldest_file_usec = 0; | |
390 | ||
391 | r = sd_id128_get_machine(&machine); | |
392 | if (r < 0) { | |
393 | log_error("Failed to get machine ID: %s", strerror(-r)); | |
394 | return; | |
395 | } | |
d025f1e4 ZJS |
396 | sd_id128_to_string(machine, ids); |
397 | ||
63c8666b ZJS |
398 | do_vacuum(s, ids, s->system_journal, "/var/log/journal/", &s->system_metrics); |
399 | do_vacuum(s, ids, s->runtime_journal, "/run/log/journal/", &s->runtime_metrics); | |
d025f1e4 ZJS |
400 | |
401 | s->cached_available_space_timestamp = 0; | |
402 | } | |
403 | ||
0c24bb23 LP |
404 | static void server_cache_machine_id(Server *s) { |
405 | sd_id128_t id; | |
406 | int r; | |
407 | ||
408 | assert(s); | |
409 | ||
410 | r = sd_id128_get_machine(&id); | |
411 | if (r < 0) | |
412 | return; | |
413 | ||
414 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
415 | } | |
416 | ||
417 | static void server_cache_boot_id(Server *s) { | |
418 | sd_id128_t id; | |
419 | int r; | |
420 | ||
421 | assert(s); | |
422 | ||
423 | r = sd_id128_get_boot(&id); | |
424 | if (r < 0) | |
425 | return; | |
426 | ||
427 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
428 | } | |
429 | ||
430 | static void server_cache_hostname(Server *s) { | |
431 | _cleanup_free_ char *t = NULL; | |
432 | char *x; | |
433 | ||
434 | assert(s); | |
435 | ||
436 | t = gethostname_malloc(); | |
437 | if (!t) | |
438 | return; | |
439 | ||
440 | x = strappend("_HOSTNAME=", t); | |
441 | if (!x) | |
442 | return; | |
443 | ||
444 | free(s->hostname_field); | |
445 | s->hostname_field = x; | |
446 | } | |
447 | ||
d025f1e4 ZJS |
448 | bool shall_try_append_again(JournalFile *f, int r) { |
449 | ||
450 | /* -E2BIG Hit configured limit | |
451 | -EFBIG Hit fs limit | |
452 | -EDQUOT Quota limit hit | |
453 | -ENOSPC Disk full | |
454 | -EHOSTDOWN Other machine | |
455 | -EBUSY Unclean shutdown | |
456 | -EPROTONOSUPPORT Unsupported feature | |
457 | -EBADMSG Corrupted | |
458 | -ENODATA Truncated | |
459 | -ESHUTDOWN Already archived */ | |
460 | ||
461 | if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC) | |
462 | log_debug("%s: Allocation limit reached, rotating.", f->path); | |
463 | else if (r == -EHOSTDOWN) | |
464 | log_info("%s: Journal file from other machine, rotating.", f->path); | |
465 | else if (r == -EBUSY) | |
466 | log_info("%s: Unclean shutdown, rotating.", f->path); | |
467 | else if (r == -EPROTONOSUPPORT) | |
468 | log_info("%s: Unsupported feature, rotating.", f->path); | |
469 | else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN) | |
470 | log_warning("%s: Journal file corrupted, rotating.", f->path); | |
471 | else | |
472 | return false; | |
473 | ||
474 | return true; | |
475 | } | |
476 | ||
d07f7b9e | 477 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) { |
d025f1e4 ZJS |
478 | JournalFile *f; |
479 | bool vacuumed = false; | |
480 | int r; | |
481 | ||
482 | assert(s); | |
483 | assert(iovec); | |
484 | assert(n > 0); | |
485 | ||
486 | f = find_journal(s, uid); | |
487 | if (!f) | |
488 | return; | |
489 | ||
490 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
491 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
492 | server_rotate(s); | |
493 | server_vacuum(s); | |
494 | vacuumed = true; | |
495 | ||
496 | f = find_journal(s, uid); | |
497 | if (!f) | |
498 | return; | |
499 | } | |
500 | ||
501 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
26687bf8 | 502 | if (r >= 0) { |
d07f7b9e | 503 | server_schedule_sync(s, priority); |
d025f1e4 | 504 | return; |
26687bf8 | 505 | } |
d025f1e4 ZJS |
506 | |
507 | if (vacuumed || !shall_try_append_again(f, r)) { | |
e40ec7ae ZJS |
508 | size_t size = 0; |
509 | unsigned i; | |
510 | for (i = 0; i < n; i++) | |
511 | size += iovec[i].iov_len; | |
512 | ||
513 | log_error("Failed to write entry (%d items, %zu bytes), ignoring: %s", n, size, strerror(-r)); | |
d025f1e4 ZJS |
514 | return; |
515 | } | |
516 | ||
517 | server_rotate(s); | |
518 | server_vacuum(s); | |
519 | ||
520 | f = find_journal(s, uid); | |
521 | if (!f) | |
522 | return; | |
523 | ||
524 | log_debug("Retrying write."); | |
525 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
e40ec7ae ZJS |
526 | if (r < 0) { |
527 | size_t size = 0; | |
528 | unsigned i; | |
529 | for (i = 0; i < n; i++) | |
530 | size += iovec[i].iov_len; | |
531 | ||
532 | log_error("Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %s", n, size, strerror(-r)); | |
d07f7b9e LP |
533 | } else |
534 | server_schedule_sync(s, priority); | |
d025f1e4 ZJS |
535 | } |
536 | ||
537 | static void dispatch_message_real( | |
538 | Server *s, | |
539 | struct iovec *iovec, unsigned n, unsigned m, | |
540 | struct ucred *ucred, | |
541 | struct timeval *tv, | |
542 | const char *label, size_t label_len, | |
968f3196 | 543 | const char *unit_id, |
d07f7b9e | 544 | int priority, |
968f3196 | 545 | pid_t object_pid) { |
d025f1e4 | 546 | |
968f3196 | 547 | char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)], |
ae018d9b LP |
548 | uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)], |
549 | gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)], | |
550 | owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)], | |
d3789917 | 551 | source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)], |
968f3196 ZJS |
552 | o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)], |
553 | o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)], | |
554 | o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)]; | |
555 | uid_t object_uid; | |
556 | gid_t object_gid; | |
968f3196 | 557 | char *x; |
d025f1e4 | 558 | int r; |
ae018d9b | 559 | char *t, *c; |
82499507 LP |
560 | uid_t realuid = 0, owner = 0, journal_uid; |
561 | bool owner_valid = false; | |
ae018d9b | 562 | #ifdef HAVE_AUDIT |
968f3196 ZJS |
563 | char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], |
564 | audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)], | |
565 | o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], | |
566 | o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)]; | |
ae018d9b LP |
567 | |
568 | uint32_t audit; | |
569 | uid_t loginuid; | |
570 | #endif | |
d025f1e4 ZJS |
571 | |
572 | assert(s); | |
573 | assert(iovec); | |
574 | assert(n > 0); | |
968f3196 | 575 | assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m); |
d025f1e4 ZJS |
576 | |
577 | if (ucred) { | |
d025f1e4 ZJS |
578 | realuid = ucred->uid; |
579 | ||
de0671ee | 580 | sprintf(pid, "_PID="PID_FMT, ucred->pid); |
c2457105 | 581 | IOVEC_SET_STRING(iovec[n++], pid); |
d025f1e4 | 582 | |
de0671ee | 583 | sprintf(uid, "_UID="UID_FMT, ucred->uid); |
c2457105 | 584 | IOVEC_SET_STRING(iovec[n++], uid); |
d025f1e4 | 585 | |
de0671ee | 586 | sprintf(gid, "_GID="GID_FMT, ucred->gid); |
c2457105 | 587 | IOVEC_SET_STRING(iovec[n++], gid); |
d025f1e4 ZJS |
588 | |
589 | r = get_process_comm(ucred->pid, &t); | |
590 | if (r >= 0) { | |
968f3196 | 591 | x = strappenda("_COMM=", t); |
d025f1e4 | 592 | free(t); |
968f3196 | 593 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
594 | } |
595 | ||
596 | r = get_process_exe(ucred->pid, &t); | |
597 | if (r >= 0) { | |
968f3196 | 598 | x = strappenda("_EXE=", t); |
d025f1e4 | 599 | free(t); |
968f3196 | 600 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
601 | } |
602 | ||
9bdbc2e2 | 603 | r = get_process_cmdline(ucred->pid, 0, false, &t); |
d025f1e4 | 604 | if (r >= 0) { |
968f3196 | 605 | x = strappenda("_CMDLINE=", t); |
d025f1e4 | 606 | free(t); |
3a832116 SL |
607 | IOVEC_SET_STRING(iovec[n++], x); |
608 | } | |
609 | ||
610 | r = get_process_capeff(ucred->pid, &t); | |
611 | if (r >= 0) { | |
612 | x = strappenda("_CAP_EFFECTIVE=", t); | |
613 | free(t); | |
968f3196 | 614 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
615 | } |
616 | ||
0a20e3c1 | 617 | #ifdef HAVE_AUDIT |
d025f1e4 | 618 | r = audit_session_from_pid(ucred->pid, &audit); |
ae018d9b | 619 | if (r >= 0) { |
de0671ee | 620 | sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit); |
ae018d9b LP |
621 | IOVEC_SET_STRING(iovec[n++], audit_session); |
622 | } | |
d025f1e4 ZJS |
623 | |
624 | r = audit_loginuid_from_pid(ucred->pid, &loginuid); | |
7027ff61 | 625 | if (r >= 0) { |
de0671ee | 626 | sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid); |
ae018d9b | 627 | IOVEC_SET_STRING(iovec[n++], audit_loginuid); |
d025f1e4 | 628 | } |
ae018d9b | 629 | #endif |
d025f1e4 | 630 | |
e9174f29 | 631 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c); |
7027ff61 | 632 | if (r >= 0) { |
968f3196 ZJS |
633 | char *session = NULL; |
634 | ||
635 | x = strappenda("_SYSTEMD_CGROUP=", c); | |
636 | IOVEC_SET_STRING(iovec[n++], x); | |
d025f1e4 | 637 | |
ae018d9b LP |
638 | r = cg_path_get_session(c, &t); |
639 | if (r >= 0) { | |
640 | session = strappenda("_SYSTEMD_SESSION=", t); | |
641 | free(t); | |
d025f1e4 | 642 | IOVEC_SET_STRING(iovec[n++], session); |
ae018d9b LP |
643 | } |
644 | ||
645 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
646 | owner_valid = true; | |
d025f1e4 | 647 | |
de0671ee | 648 | sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner); |
d025f1e4 | 649 | IOVEC_SET_STRING(iovec[n++], owner_uid); |
ae018d9b | 650 | } |
d025f1e4 | 651 | |
ae018d9b | 652 | if (cg_path_get_unit(c, &t) >= 0) { |
968f3196 | 653 | x = strappenda("_SYSTEMD_UNIT=", t); |
ae018d9b | 654 | free(t); |
19cace37 LP |
655 | IOVEC_SET_STRING(iovec[n++], x); |
656 | } else if (unit_id && !session) { | |
657 | x = strappenda("_SYSTEMD_UNIT=", unit_id); | |
658 | IOVEC_SET_STRING(iovec[n++], x); | |
659 | } | |
660 | ||
661 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
968f3196 | 662 | x = strappenda("_SYSTEMD_USER_UNIT=", t); |
ae018d9b | 663 | free(t); |
968f3196 | 664 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 LP |
665 | } else if (unit_id && session) { |
666 | x = strappenda("_SYSTEMD_USER_UNIT=", unit_id); | |
667 | IOVEC_SET_STRING(iovec[n++], x); | |
668 | } | |
ae018d9b | 669 | |
0a244b8e LP |
670 | if (cg_path_get_slice(c, &t) >= 0) { |
671 | x = strappenda("_SYSTEMD_SLICE=", t); | |
672 | free(t); | |
673 | IOVEC_SET_STRING(iovec[n++], x); | |
674 | } | |
675 | ||
ae018d9b | 676 | free(c); |
2d43b190 DM |
677 | } else if (unit_id) { |
678 | x = strappenda("_SYSTEMD_UNIT=", unit_id); | |
679 | IOVEC_SET_STRING(iovec[n++], x); | |
ef1673d1 | 680 | } |
d025f1e4 | 681 | |
d025f1e4 | 682 | #ifdef HAVE_SELINUX |
d682b3a7 LP |
683 | if (use_selinux()) { |
684 | if (label) { | |
f8294e41 | 685 | x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1); |
ae018d9b | 686 | |
d682b3a7 LP |
687 | *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0; |
688 | IOVEC_SET_STRING(iovec[n++], x); | |
689 | } else { | |
690 | security_context_t con; | |
d025f1e4 | 691 | |
d682b3a7 LP |
692 | if (getpidcon(ucred->pid, &con) >= 0) { |
693 | x = strappenda("_SELINUX_CONTEXT=", con); | |
e7ff4e7f | 694 | |
d682b3a7 LP |
695 | freecon(con); |
696 | IOVEC_SET_STRING(iovec[n++], x); | |
697 | } | |
d025f1e4 ZJS |
698 | } |
699 | } | |
700 | #endif | |
701 | } | |
968f3196 ZJS |
702 | assert(n <= m); |
703 | ||
704 | if (object_pid) { | |
705 | r = get_process_uid(object_pid, &object_uid); | |
706 | if (r >= 0) { | |
de0671ee | 707 | sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid); |
968f3196 ZJS |
708 | IOVEC_SET_STRING(iovec[n++], o_uid); |
709 | } | |
710 | ||
711 | r = get_process_gid(object_pid, &object_gid); | |
712 | if (r >= 0) { | |
de0671ee | 713 | sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid); |
968f3196 ZJS |
714 | IOVEC_SET_STRING(iovec[n++], o_gid); |
715 | } | |
716 | ||
717 | r = get_process_comm(object_pid, &t); | |
718 | if (r >= 0) { | |
719 | x = strappenda("OBJECT_COMM=", t); | |
720 | free(t); | |
721 | IOVEC_SET_STRING(iovec[n++], x); | |
722 | } | |
723 | ||
724 | r = get_process_exe(object_pid, &t); | |
725 | if (r >= 0) { | |
726 | x = strappenda("OBJECT_EXE=", t); | |
727 | free(t); | |
728 | IOVEC_SET_STRING(iovec[n++], x); | |
729 | } | |
730 | ||
731 | r = get_process_cmdline(object_pid, 0, false, &t); | |
732 | if (r >= 0) { | |
733 | x = strappenda("OBJECT_CMDLINE=", t); | |
734 | free(t); | |
735 | IOVEC_SET_STRING(iovec[n++], x); | |
736 | } | |
737 | ||
738 | #ifdef HAVE_AUDIT | |
739 | r = audit_session_from_pid(object_pid, &audit); | |
740 | if (r >= 0) { | |
de0671ee | 741 | sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit); |
968f3196 ZJS |
742 | IOVEC_SET_STRING(iovec[n++], o_audit_session); |
743 | } | |
744 | ||
745 | r = audit_loginuid_from_pid(object_pid, &loginuid); | |
746 | if (r >= 0) { | |
de0671ee | 747 | sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid); |
968f3196 ZJS |
748 | IOVEC_SET_STRING(iovec[n++], o_audit_loginuid); |
749 | } | |
750 | #endif | |
751 | ||
e9174f29 | 752 | r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c); |
968f3196 ZJS |
753 | if (r >= 0) { |
754 | x = strappenda("OBJECT_SYSTEMD_CGROUP=", c); | |
755 | IOVEC_SET_STRING(iovec[n++], x); | |
756 | ||
757 | r = cg_path_get_session(c, &t); | |
758 | if (r >= 0) { | |
759 | x = strappenda("OBJECT_SYSTEMD_SESSION=", t); | |
760 | free(t); | |
761 | IOVEC_SET_STRING(iovec[n++], x); | |
762 | } | |
763 | ||
764 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
de0671ee | 765 | sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner); |
968f3196 ZJS |
766 | IOVEC_SET_STRING(iovec[n++], o_owner_uid); |
767 | } | |
768 | ||
769 | if (cg_path_get_unit(c, &t) >= 0) { | |
770 | x = strappenda("OBJECT_SYSTEMD_UNIT=", t); | |
771 | free(t); | |
19cace37 LP |
772 | IOVEC_SET_STRING(iovec[n++], x); |
773 | } | |
774 | ||
775 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
968f3196 ZJS |
776 | x = strappenda("OBJECT_SYSTEMD_USER_UNIT=", t); |
777 | free(t); | |
968f3196 | 778 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 779 | } |
968f3196 ZJS |
780 | |
781 | free(c); | |
782 | } | |
783 | } | |
784 | assert(n <= m); | |
d025f1e4 ZJS |
785 | |
786 | if (tv) { | |
ae018d9b | 787 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv)); |
a5693989 | 788 | IOVEC_SET_STRING(iovec[n++], source_time); |
d025f1e4 ZJS |
789 | } |
790 | ||
791 | /* Note that strictly speaking storing the boot id here is | |
792 | * redundant since the entry includes this in-line | |
793 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 LP |
794 | if (!isempty(s->boot_id_field)) |
795 | IOVEC_SET_STRING(iovec[n++], s->boot_id_field); | |
d025f1e4 | 796 | |
0c24bb23 LP |
797 | if (!isempty(s->machine_id_field)) |
798 | IOVEC_SET_STRING(iovec[n++], s->machine_id_field); | |
d025f1e4 | 799 | |
0c24bb23 LP |
800 | if (!isempty(s->hostname_field)) |
801 | IOVEC_SET_STRING(iovec[n++], s->hostname_field); | |
d025f1e4 ZJS |
802 | |
803 | assert(n <= m); | |
804 | ||
da499392 | 805 | if (s->split_mode == SPLIT_UID && realuid > 0) |
40adcda8 | 806 | /* Split up strictly by any UID */ |
759c945a | 807 | journal_uid = realuid; |
82499507 | 808 | else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0) |
edc3797f LP |
809 | /* Split up by login UIDs. We do this only if the |
810 | * realuid is not root, in order not to accidentally | |
811 | * leak privileged information to the user that is | |
812 | * logged by a privileged process that is part of an | |
813 | * 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 | ||
fc1d70af LP |
993 | (void) mkdir("/run/log", 0755); |
994 | (void) mkdir("/run/log/journal", 0755); | |
995 | (void) mkdir_parents(fn, 0750); | |
996 | ||
d025f1e4 ZJS |
997 | r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); |
998 | free(fn); | |
999 | ||
1000 | if (r < 0) { | |
1001 | log_error("Failed to open runtime journal: %s", strerror(-r)); | |
1002 | return r; | |
1003 | } | |
1004 | } | |
1005 | ||
670b110c | 1006 | if (s->runtime_journal) |
d025f1e4 | 1007 | server_fix_perms(s, s->runtime_journal, 0); |
d025f1e4 ZJS |
1008 | } |
1009 | ||
670b110c ZJS |
1010 | available_space(s, true); |
1011 | ||
d025f1e4 ZJS |
1012 | return r; |
1013 | } | |
1014 | ||
1015 | int server_flush_to_var(Server *s) { | |
d025f1e4 ZJS |
1016 | sd_id128_t machine; |
1017 | sd_journal *j = NULL; | |
fbb63411 LP |
1018 | char ts[FORMAT_TIMESPAN_MAX]; |
1019 | usec_t start; | |
1020 | unsigned n = 0; | |
1021 | int r; | |
d025f1e4 ZJS |
1022 | |
1023 | assert(s); | |
1024 | ||
1025 | if (s->storage != STORAGE_AUTO && | |
1026 | s->storage != STORAGE_PERSISTENT) | |
1027 | return 0; | |
1028 | ||
1029 | if (!s->runtime_journal) | |
1030 | return 0; | |
1031 | ||
1032 | system_journal_open(s); | |
1033 | ||
1034 | if (!s->system_journal) | |
1035 | return 0; | |
1036 | ||
1037 | log_debug("Flushing to /var..."); | |
1038 | ||
fbb63411 LP |
1039 | start = now(CLOCK_MONOTONIC); |
1040 | ||
d025f1e4 | 1041 | r = sd_id128_get_machine(&machine); |
00a16861 | 1042 | if (r < 0) |
d025f1e4 | 1043 | return r; |
d025f1e4 ZJS |
1044 | |
1045 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
1046 | if (r < 0) { | |
1047 | log_error("Failed to read runtime journal: %s", strerror(-r)); | |
1048 | return r; | |
1049 | } | |
1050 | ||
93b73b06 LP |
1051 | sd_journal_set_data_threshold(j, 0); |
1052 | ||
d025f1e4 ZJS |
1053 | SD_JOURNAL_FOREACH(j) { |
1054 | Object *o = NULL; | |
1055 | JournalFile *f; | |
1056 | ||
1057 | f = j->current_file; | |
1058 | assert(f && f->current_offset > 0); | |
1059 | ||
fbb63411 LP |
1060 | n++; |
1061 | ||
d025f1e4 ZJS |
1062 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1063 | if (r < 0) { | |
1064 | log_error("Can't read entry: %s", strerror(-r)); | |
1065 | goto finish; | |
1066 | } | |
1067 | ||
1068 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1069 | if (r >= 0) | |
1070 | continue; | |
1071 | ||
1072 | if (!shall_try_append_again(s->system_journal, r)) { | |
1073 | log_error("Can't write entry: %s", strerror(-r)); | |
1074 | goto finish; | |
1075 | } | |
1076 | ||
1077 | server_rotate(s); | |
1078 | server_vacuum(s); | |
1079 | ||
253f59df LP |
1080 | if (!s->system_journal) { |
1081 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1082 | r = -EIO; | |
1083 | goto finish; | |
1084 | } | |
1085 | ||
d025f1e4 ZJS |
1086 | log_debug("Retrying write."); |
1087 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1088 | if (r < 0) { | |
1089 | log_error("Can't write entry: %s", strerror(-r)); | |
1090 | goto finish; | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | finish: | |
1095 | journal_file_post_change(s->system_journal); | |
1096 | ||
1097 | journal_file_close(s->runtime_journal); | |
1098 | s->runtime_journal = NULL; | |
1099 | ||
1100 | if (r >= 0) | |
1101 | rm_rf("/run/log/journal", false, true, false); | |
1102 | ||
763c7aa2 | 1103 | sd_journal_close(j); |
d025f1e4 | 1104 | |
fbb63411 LP |
1105 | 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); |
1106 | ||
d025f1e4 ZJS |
1107 | return r; |
1108 | } | |
1109 | ||
f9a810be LP |
1110 | int process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1111 | Server *s = userdata; | |
1112 | ||
d025f1e4 | 1113 | assert(s); |
f9a810be LP |
1114 | assert(fd == s->native_fd || fd == s->syslog_fd); |
1115 | ||
1116 | if (revents != EPOLLIN) { | |
1117 | log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents); | |
1118 | return -EIO; | |
1119 | } | |
1120 | ||
1121 | for (;;) { | |
1122 | struct ucred *ucred = NULL; | |
1123 | struct timeval *tv = NULL; | |
1124 | struct cmsghdr *cmsg; | |
1125 | char *label = NULL; | |
1126 | size_t label_len = 0; | |
1127 | struct iovec iovec; | |
1128 | ||
1129 | union { | |
1130 | struct cmsghdr cmsghdr; | |
1131 | ||
bdd13f6b ZJS |
1132 | /* We use NAME_MAX space for the SELinux label |
1133 | * here. The kernel currently enforces no | |
1134 | * limit, but according to suggestions from | |
1135 | * the SELinux people this will change and it | |
1136 | * will probably be identical to NAME_MAX. For | |
1137 | * now we use that, but this should be updated | |
1138 | * one day when the final limit is known.*/ | |
f9a810be LP |
1139 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + |
1140 | CMSG_SPACE(sizeof(struct timeval)) + | |
1141 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1142 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1143 | } control = {}; | |
1144 | struct msghdr msghdr = { | |
1145 | .msg_iov = &iovec, | |
1146 | .msg_iovlen = 1, | |
1147 | .msg_control = &control, | |
1148 | .msg_controllen = sizeof(control), | |
1149 | }; | |
d025f1e4 | 1150 | |
d025f1e4 | 1151 | ssize_t n; |
f9a810be LP |
1152 | int v; |
1153 | int *fds = NULL; | |
1154 | unsigned n_fds = 0; | |
d025f1e4 | 1155 | |
f9a810be LP |
1156 | if (ioctl(fd, SIOCINQ, &v) < 0) { |
1157 | log_error("SIOCINQ failed: %m"); | |
1158 | return -errno; | |
d025f1e4 ZJS |
1159 | } |
1160 | ||
f9a810be LP |
1161 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, LINE_MAX + (size_t) v)) |
1162 | return log_oom(); | |
d025f1e4 | 1163 | |
f9a810be LP |
1164 | iovec.iov_base = s->buffer; |
1165 | iovec.iov_len = s->buffer_size; | |
d025f1e4 | 1166 | |
f9a810be LP |
1167 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1168 | if (n < 0) { | |
d025f1e4 | 1169 | if (errno == EINTR || errno == EAGAIN) |
f9a810be | 1170 | return 0; |
d025f1e4 | 1171 | |
f9a810be | 1172 | log_error("recvmsg() failed: %m"); |
d025f1e4 ZJS |
1173 | return -errno; |
1174 | } | |
1175 | ||
f9a810be LP |
1176 | for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) { |
1177 | ||
1178 | if (cmsg->cmsg_level == SOL_SOCKET && | |
1179 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1180 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) | |
1181 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1182 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1183 | cmsg->cmsg_type == SCM_SECURITY) { | |
1184 | label = (char*) CMSG_DATA(cmsg); | |
1185 | label_len = cmsg->cmsg_len - CMSG_LEN(0); | |
1186 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1187 | cmsg->cmsg_type == SO_TIMESTAMP && | |
1188 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval))) | |
1189 | tv = (struct timeval*) CMSG_DATA(cmsg); | |
1190 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1191 | cmsg->cmsg_type == SCM_RIGHTS) { | |
1192 | fds = (int*) CMSG_DATA(cmsg); | |
1193 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
1194 | } | |
d025f1e4 ZJS |
1195 | } |
1196 | ||
f9a810be LP |
1197 | if (fd == s->syslog_fd) { |
1198 | if (n > 0 && n_fds == 0) { | |
1199 | s->buffer[n] = 0; | |
1200 | server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len); | |
1201 | } else if (n_fds > 0) | |
1202 | log_warning("Got file descriptors via syslog socket. Ignoring."); | |
d025f1e4 | 1203 | |
f9a810be LP |
1204 | } else { |
1205 | if (n > 0 && n_fds == 0) | |
1206 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1207 | else if (n == 0 && n_fds == 1) | |
1208 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1209 | else if (n_fds > 0) | |
1210 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
d025f1e4 ZJS |
1211 | } |
1212 | ||
f9a810be LP |
1213 | close_many(fds, n_fds); |
1214 | } | |
f9a810be | 1215 | } |
d025f1e4 | 1216 | |
f9a810be LP |
1217 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1218 | Server *s = userdata; | |
d025f1e4 | 1219 | |
f9a810be | 1220 | assert(s); |
d025f1e4 | 1221 | |
f9a810be | 1222 | log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid); |
d025f1e4 | 1223 | |
f9a810be LP |
1224 | server_flush_to_var(s); |
1225 | server_sync(s); | |
3bfd4e0c | 1226 | server_vacuum(s); |
d025f1e4 | 1227 | |
74055aa7 LP |
1228 | touch("/run/systemd/journal/flushed"); |
1229 | ||
f9a810be LP |
1230 | return 0; |
1231 | } | |
d025f1e4 | 1232 | |
f9a810be LP |
1233 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1234 | Server *s = userdata; | |
d025f1e4 | 1235 | |
f9a810be | 1236 | assert(s); |
d025f1e4 | 1237 | |
f9a810be LP |
1238 | log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid); |
1239 | server_rotate(s); | |
1240 | server_vacuum(s); | |
d025f1e4 | 1241 | |
f9a810be LP |
1242 | return 0; |
1243 | } | |
d025f1e4 | 1244 | |
f9a810be LP |
1245 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1246 | Server *s = userdata; | |
d025f1e4 | 1247 | |
f9a810be | 1248 | assert(s); |
d025f1e4 | 1249 | |
4daf54a8 | 1250 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1251 | |
6203e07a | 1252 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1253 | return 0; |
1254 | } | |
1255 | ||
f9a810be | 1256 | static int setup_signals(Server *s) { |
d025f1e4 | 1257 | sigset_t mask; |
f9a810be | 1258 | int r; |
d025f1e4 ZJS |
1259 | |
1260 | assert(s); | |
1261 | ||
1262 | assert_se(sigemptyset(&mask) == 0); | |
1263 | sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1); | |
1264 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); | |
1265 | ||
151b9b96 | 1266 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1267 | if (r < 0) |
1268 | return r; | |
1269 | ||
151b9b96 | 1270 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1271 | if (r < 0) |
1272 | return r; | |
d025f1e4 | 1273 | |
151b9b96 | 1274 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1275 | if (r < 0) |
1276 | return r; | |
d025f1e4 | 1277 | |
151b9b96 | 1278 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1279 | if (r < 0) |
1280 | return r; | |
d025f1e4 ZJS |
1281 | |
1282 | return 0; | |
1283 | } | |
1284 | ||
1285 | static int server_parse_proc_cmdline(Server *s) { | |
7fd1b19b | 1286 | _cleanup_free_ char *line = NULL; |
a2a5291b | 1287 | const char *w, *state; |
d025f1e4 | 1288 | size_t l; |
74df0fca | 1289 | int r; |
d025f1e4 | 1290 | |
74df0fca LP |
1291 | r = proc_cmdline(&line); |
1292 | if (r < 0) | |
d025f1e4 | 1293 | log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); |
74df0fca | 1294 | if (r <= 0) |
d025f1e4 | 1295 | return 0; |
d025f1e4 ZJS |
1296 | |
1297 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
7fd1b19b | 1298 | _cleanup_free_ char *word; |
d025f1e4 ZJS |
1299 | |
1300 | word = strndup(w, l); | |
db91ea32 ZJS |
1301 | if (!word) |
1302 | return -ENOMEM; | |
d025f1e4 ZJS |
1303 | |
1304 | if (startswith(word, "systemd.journald.forward_to_syslog=")) { | |
1305 | r = parse_boolean(word + 35); | |
1306 | if (r < 0) | |
1307 | log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35); | |
1308 | else | |
1309 | s->forward_to_syslog = r; | |
1310 | } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) { | |
1311 | r = parse_boolean(word + 33); | |
1312 | if (r < 0) | |
1313 | log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33); | |
1314 | else | |
1315 | s->forward_to_kmsg = r; | |
1316 | } else if (startswith(word, "systemd.journald.forward_to_console=")) { | |
1317 | r = parse_boolean(word + 36); | |
1318 | if (r < 0) | |
1319 | log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36); | |
1320 | else | |
1321 | s->forward_to_console = r; | |
40b71e89 ST |
1322 | } else if (startswith(word, "systemd.journald.forward_to_wall=")) { |
1323 | r = parse_boolean(word + 33); | |
1324 | if (r < 0) | |
1325 | log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33); | |
1326 | else | |
1327 | s->forward_to_wall = r; | |
d025f1e4 ZJS |
1328 | } else if (startswith(word, "systemd.journald")) |
1329 | log_warning("Invalid systemd.journald parameter. Ignoring."); | |
d025f1e4 | 1330 | } |
b2fadec6 | 1331 | /* do not warn about state here, since probably systemd already did */ |
d025f1e4 | 1332 | |
db91ea32 | 1333 | return 0; |
d025f1e4 ZJS |
1334 | } |
1335 | ||
1336 | static int server_parse_config_file(Server *s) { | |
d025f1e4 ZJS |
1337 | assert(s); |
1338 | ||
36f822c4 ZJS |
1339 | return config_parse(NULL, "/etc/systemd/journald.conf", NULL, |
1340 | "Journal\0", | |
1341 | config_item_perf_lookup, journald_gperf_lookup, | |
1342 | false, false, true, s); | |
d025f1e4 ZJS |
1343 | } |
1344 | ||
f9a810be LP |
1345 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1346 | Server *s = userdata; | |
26687bf8 OS |
1347 | |
1348 | assert(s); | |
1349 | ||
f9a810be | 1350 | server_sync(s); |
26687bf8 OS |
1351 | return 0; |
1352 | } | |
1353 | ||
d07f7b9e | 1354 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1355 | int r; |
1356 | ||
26687bf8 OS |
1357 | assert(s); |
1358 | ||
d07f7b9e LP |
1359 | if (priority <= LOG_CRIT) { |
1360 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1361 | server_sync(s); | |
1362 | return 0; | |
1363 | } | |
1364 | ||
26687bf8 OS |
1365 | if (s->sync_scheduled) |
1366 | return 0; | |
1367 | ||
f9a810be LP |
1368 | if (s->sync_interval_usec > 0) { |
1369 | usec_t when; | |
ca267016 | 1370 | |
6a0f1f6d | 1371 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1372 | if (r < 0) |
1373 | return r; | |
26687bf8 | 1374 | |
f9a810be LP |
1375 | when += s->sync_interval_usec; |
1376 | ||
1377 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1378 | r = sd_event_add_time( |
1379 | s->event, | |
1380 | &s->sync_event_source, | |
1381 | CLOCK_MONOTONIC, | |
1382 | when, 0, | |
1383 | server_dispatch_sync, s); | |
f9a810be LP |
1384 | if (r < 0) |
1385 | return r; | |
1386 | ||
1387 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1388 | } else { | |
1389 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1390 | if (r < 0) | |
1391 | return r; | |
1392 | ||
1393 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1394 | } | |
26687bf8 | 1395 | if (r < 0) |
f9a810be | 1396 | return r; |
26687bf8 | 1397 | |
f9a810be LP |
1398 | s->sync_scheduled = true; |
1399 | } | |
26687bf8 OS |
1400 | |
1401 | return 0; | |
1402 | } | |
1403 | ||
0c24bb23 LP |
1404 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1405 | Server *s = userdata; | |
1406 | ||
1407 | assert(s); | |
1408 | ||
1409 | server_cache_hostname(s); | |
1410 | return 0; | |
1411 | } | |
1412 | ||
1413 | static int server_open_hostname(Server *s) { | |
1414 | int r; | |
1415 | ||
1416 | assert(s); | |
1417 | ||
1418 | s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY); | |
1419 | if (s->hostname_fd < 0) { | |
1420 | log_error("Failed to open /proc/sys/kernel/hostname: %m"); | |
1421 | return -errno; | |
1422 | } | |
1423 | ||
151b9b96 | 1424 | r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s); |
0c24bb23 | 1425 | if (r < 0) { |
28def94c DR |
1426 | /* kernels prior to 3.2 don't support polling this file. Ignore |
1427 | * the failure. */ | |
1428 | if (r == -EPERM) { | |
1429 | log_warning("Failed to register hostname fd in event loop: %s. Ignoring.", | |
1430 | strerror(-r)); | |
03e334a1 | 1431 | s->hostname_fd = safe_close(s->hostname_fd); |
28def94c DR |
1432 | return 0; |
1433 | } | |
1434 | ||
0c24bb23 LP |
1435 | log_error("Failed to register hostname fd in event loop: %s", strerror(-r)); |
1436 | return r; | |
1437 | } | |
1438 | ||
1439 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
1440 | if (r < 0) { | |
1441 | log_error("Failed to adjust priority of host name event source: %s", strerror(-r)); | |
1442 | return r; | |
1443 | } | |
1444 | ||
1445 | return 0; | |
1446 | } | |
1447 | ||
d025f1e4 ZJS |
1448 | int server_init(Server *s) { |
1449 | int n, r, fd; | |
1450 | ||
1451 | assert(s); | |
1452 | ||
1453 | zero(*s); | |
0c24bb23 | 1454 | s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->hostname_fd = -1; |
d025f1e4 ZJS |
1455 | s->compress = true; |
1456 | s->seal = true; | |
1457 | ||
26687bf8 OS |
1458 | s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC; |
1459 | s->sync_scheduled = false; | |
1460 | ||
d025f1e4 ZJS |
1461 | s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL; |
1462 | s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST; | |
1463 | ||
40b71e89 | 1464 | s->forward_to_wall = true; |
d025f1e4 | 1465 | |
e150e820 MB |
1466 | s->max_file_usec = DEFAULT_MAX_FILE_USEC; |
1467 | ||
d025f1e4 ZJS |
1468 | s->max_level_store = LOG_DEBUG; |
1469 | s->max_level_syslog = LOG_DEBUG; | |
1470 | s->max_level_kmsg = LOG_NOTICE; | |
1471 | s->max_level_console = LOG_INFO; | |
40b71e89 | 1472 | s->max_level_wall = LOG_EMERG; |
d025f1e4 ZJS |
1473 | |
1474 | memset(&s->system_metrics, 0xFF, sizeof(s->system_metrics)); | |
1475 | memset(&s->runtime_metrics, 0xFF, sizeof(s->runtime_metrics)); | |
1476 | ||
1477 | server_parse_config_file(s); | |
1478 | server_parse_proc_cmdline(s); | |
d288f79f | 1479 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
b1389b0d ZJS |
1480 | log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", |
1481 | s->rate_limit_interval, s->rate_limit_burst); | |
d288f79f ZJS |
1482 | s->rate_limit_interval = s->rate_limit_burst = 0; |
1483 | } | |
d025f1e4 ZJS |
1484 | |
1485 | mkdir_p("/run/systemd/journal", 0755); | |
1486 | ||
d5099efc | 1487 | s->user_journals = hashmap_new(NULL); |
d025f1e4 ZJS |
1488 | if (!s->user_journals) |
1489 | return log_oom(); | |
1490 | ||
1491 | s->mmap = mmap_cache_new(); | |
1492 | if (!s->mmap) | |
1493 | return log_oom(); | |
1494 | ||
f9a810be LP |
1495 | r = sd_event_default(&s->event); |
1496 | if (r < 0) { | |
1497 | log_error("Failed to create event loop: %s", strerror(-r)); | |
1498 | return r; | |
d025f1e4 ZJS |
1499 | } |
1500 | ||
f9a810be LP |
1501 | sd_event_set_watchdog(s->event, true); |
1502 | ||
d025f1e4 ZJS |
1503 | n = sd_listen_fds(true); |
1504 | if (n < 0) { | |
1505 | log_error("Failed to read listening file descriptors from environment: %s", strerror(-n)); | |
1506 | return n; | |
1507 | } | |
1508 | ||
1509 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
1510 | ||
1511 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
1512 | ||
1513 | if (s->native_fd >= 0) { | |
1514 | log_error("Too many native sockets passed."); | |
1515 | return -EINVAL; | |
1516 | } | |
1517 | ||
1518 | s->native_fd = fd; | |
1519 | ||
1520 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
1521 | ||
1522 | if (s->stdout_fd >= 0) { | |
1523 | log_error("Too many stdout sockets passed."); | |
1524 | return -EINVAL; | |
1525 | } | |
1526 | ||
1527 | s->stdout_fd = fd; | |
1528 | ||
03ee5c38 LP |
1529 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 || |
1530 | sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) { | |
d025f1e4 ZJS |
1531 | |
1532 | if (s->syslog_fd >= 0) { | |
1533 | log_error("Too many /dev/log sockets passed."); | |
1534 | return -EINVAL; | |
1535 | } | |
1536 | ||
1537 | s->syslog_fd = fd; | |
1538 | ||
1539 | } else { | |
1540 | log_error("Unknown socket passed."); | |
1541 | return -EINVAL; | |
1542 | } | |
1543 | } | |
1544 | ||
1545 | r = server_open_syslog_socket(s); | |
1546 | if (r < 0) | |
1547 | return r; | |
1548 | ||
1549 | r = server_open_native_socket(s); | |
1550 | if (r < 0) | |
1551 | return r; | |
1552 | ||
1553 | r = server_open_stdout_socket(s); | |
1554 | if (r < 0) | |
1555 | return r; | |
1556 | ||
1557 | r = server_open_dev_kmsg(s); | |
1558 | if (r < 0) | |
1559 | return r; | |
1560 | ||
1561 | r = server_open_kernel_seqnum(s); | |
1562 | if (r < 0) | |
1563 | return r; | |
1564 | ||
0c24bb23 LP |
1565 | r = server_open_hostname(s); |
1566 | if (r < 0) | |
1567 | return r; | |
1568 | ||
f9a810be | 1569 | r = setup_signals(s); |
d025f1e4 ZJS |
1570 | if (r < 0) |
1571 | return r; | |
1572 | ||
1573 | s->udev = udev_new(); | |
1574 | if (!s->udev) | |
1575 | return -ENOMEM; | |
1576 | ||
f9a810be | 1577 | s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst); |
d025f1e4 ZJS |
1578 | if (!s->rate_limit) |
1579 | return -ENOMEM; | |
1580 | ||
e9174f29 LP |
1581 | r = cg_get_root_path(&s->cgroup_root); |
1582 | if (r < 0) | |
1583 | return r; | |
1584 | ||
0c24bb23 LP |
1585 | server_cache_hostname(s); |
1586 | server_cache_boot_id(s); | |
1587 | server_cache_machine_id(s); | |
1588 | ||
d025f1e4 ZJS |
1589 | r = system_journal_open(s); |
1590 | if (r < 0) | |
1591 | return r; | |
1592 | ||
1593 | return 0; | |
1594 | } | |
1595 | ||
1596 | void server_maybe_append_tags(Server *s) { | |
1597 | #ifdef HAVE_GCRYPT | |
1598 | JournalFile *f; | |
1599 | Iterator i; | |
1600 | usec_t n; | |
1601 | ||
1602 | n = now(CLOCK_REALTIME); | |
1603 | ||
1604 | if (s->system_journal) | |
1605 | journal_file_maybe_append_tag(s->system_journal, n); | |
1606 | ||
1607 | HASHMAP_FOREACH(f, s->user_journals, i) | |
1608 | journal_file_maybe_append_tag(f, n); | |
1609 | #endif | |
1610 | } | |
1611 | ||
1612 | void server_done(Server *s) { | |
1613 | JournalFile *f; | |
1614 | assert(s); | |
1615 | ||
1616 | while (s->stdout_streams) | |
1617 | stdout_stream_free(s->stdout_streams); | |
1618 | ||
1619 | if (s->system_journal) | |
1620 | journal_file_close(s->system_journal); | |
1621 | ||
1622 | if (s->runtime_journal) | |
1623 | journal_file_close(s->runtime_journal); | |
1624 | ||
1625 | while ((f = hashmap_steal_first(s->user_journals))) | |
1626 | journal_file_close(f); | |
1627 | ||
1628 | hashmap_free(s->user_journals); | |
1629 | ||
f9a810be LP |
1630 | sd_event_source_unref(s->syslog_event_source); |
1631 | sd_event_source_unref(s->native_event_source); | |
1632 | sd_event_source_unref(s->stdout_event_source); | |
1633 | sd_event_source_unref(s->dev_kmsg_event_source); | |
1634 | sd_event_source_unref(s->sync_event_source); | |
1635 | sd_event_source_unref(s->sigusr1_event_source); | |
1636 | sd_event_source_unref(s->sigusr2_event_source); | |
1637 | sd_event_source_unref(s->sigterm_event_source); | |
1638 | sd_event_source_unref(s->sigint_event_source); | |
0c24bb23 | 1639 | sd_event_source_unref(s->hostname_event_source); |
f9a810be | 1640 | sd_event_unref(s->event); |
d025f1e4 | 1641 | |
03e334a1 LP |
1642 | safe_close(s->syslog_fd); |
1643 | safe_close(s->native_fd); | |
1644 | safe_close(s->stdout_fd); | |
1645 | safe_close(s->dev_kmsg_fd); | |
1646 | safe_close(s->hostname_fd); | |
0c24bb23 | 1647 | |
d025f1e4 ZJS |
1648 | if (s->rate_limit) |
1649 | journal_rate_limit_free(s->rate_limit); | |
1650 | ||
1651 | if (s->kernel_seqnum) | |
1652 | munmap(s->kernel_seqnum, sizeof(uint64_t)); | |
1653 | ||
1654 | free(s->buffer); | |
1655 | free(s->tty_path); | |
e9174f29 | 1656 | free(s->cgroup_root); |
d025f1e4 ZJS |
1657 | |
1658 | if (s->mmap) | |
1659 | mmap_cache_unref(s->mmap); | |
1660 | ||
1661 | if (s->udev) | |
1662 | udev_unref(s->udev); | |
1663 | } |