]>
Commit | Line | Data |
---|---|---|
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> | |
27 | ||
28 | #include <libudev.h> | |
d025f1e4 | 29 | |
74df0fca LP |
30 | #include "sd-journal.h" |
31 | #include "sd-messages.h" | |
32 | #include "sd-daemon.h" | |
d025f1e4 | 33 | #include "mkdir.h" |
c6878637 | 34 | #include "rm-rf.h" |
d025f1e4 ZJS |
35 | #include "hashmap.h" |
36 | #include "journal-file.h" | |
37 | #include "socket-util.h" | |
38 | #include "cgroup-util.h" | |
d025f1e4 ZJS |
39 | #include "missing.h" |
40 | #include "conf-parser.h" | |
74df0fca | 41 | #include "selinux-util.h" |
d025f1e4 ZJS |
42 | #include "journal-internal.h" |
43 | #include "journal-vacuum.h" | |
44 | #include "journal-authenticate.h" | |
d025f1e4 ZJS |
45 | #include "journald-rate-limit.h" |
46 | #include "journald-kmsg.h" | |
47 | #include "journald-syslog.h" | |
48 | #include "journald-stream.h" | |
d025f1e4 | 49 | #include "journald-native.h" |
875c2e22 | 50 | #include "journald-audit.h" |
74df0fca | 51 | #include "journald-server.h" |
d025f1e4 | 52 | #include "acl-util.h" |
d025f1e4 ZJS |
53 | |
54 | #ifdef HAVE_SELINUX | |
55 | #include <selinux/selinux.h> | |
56 | #endif | |
57 | ||
58 | #define USER_JOURNALS_MAX 1024 | |
59 | ||
26687bf8 | 60 | #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE) |
7f1ad696 LP |
61 | #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC) |
62 | #define DEFAULT_RATE_LIMIT_BURST 1000 | |
e150e820 | 63 | #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH |
d025f1e4 ZJS |
64 | |
65 | #define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC) | |
66 | ||
2c5859af | 67 | static const char* const storage_table[_STORAGE_MAX] = { |
d025f1e4 ZJS |
68 | [STORAGE_AUTO] = "auto", |
69 | [STORAGE_VOLATILE] = "volatile", | |
70 | [STORAGE_PERSISTENT] = "persistent", | |
71 | [STORAGE_NONE] = "none" | |
72 | }; | |
73 | ||
74 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
75 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
76 | ||
2c5859af DM |
77 | static const char* const split_mode_table[_SPLIT_MAX] = { |
78 | [SPLIT_LOGIN] = "login", | |
d025f1e4 | 79 | [SPLIT_UID] = "uid", |
2c5859af | 80 | [SPLIT_NONE] = "none", |
d025f1e4 ZJS |
81 | }; |
82 | ||
83 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
84 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); | |
85 | ||
670b110c | 86 | static uint64_t available_space(Server *s, bool verbose) { |
db91ea32 | 87 | char ids[33]; |
7fd1b19b | 88 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
89 | sd_id128_t machine; |
90 | struct statvfs ss; | |
670b110c | 91 | uint64_t sum = 0, ss_avail = 0, avail = 0; |
d025f1e4 | 92 | int r; |
7fd1b19b | 93 | _cleanup_closedir_ DIR *d = NULL; |
d025f1e4 | 94 | usec_t ts; |
670b110c | 95 | const char *f; |
d025f1e4 ZJS |
96 | JournalMetrics *m; |
97 | ||
98 | ts = now(CLOCK_MONOTONIC); | |
99 | ||
670b110c ZJS |
100 | if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts |
101 | && !verbose) | |
d025f1e4 ZJS |
102 | return s->cached_available_space; |
103 | ||
104 | r = sd_id128_get_machine(&machine); | |
105 | if (r < 0) | |
106 | return 0; | |
107 | ||
108 | if (s->system_journal) { | |
109 | f = "/var/log/journal/"; | |
110 | m = &s->system_metrics; | |
111 | } else { | |
112 | f = "/run/log/journal/"; | |
113 | m = &s->runtime_metrics; | |
114 | } | |
115 | ||
116 | assert(m); | |
117 | ||
118 | p = strappend(f, sd_id128_to_string(machine, ids)); | |
119 | if (!p) | |
120 | return 0; | |
121 | ||
122 | d = opendir(p); | |
d025f1e4 ZJS |
123 | if (!d) |
124 | return 0; | |
125 | ||
126 | if (fstatvfs(dirfd(d), &ss) < 0) | |
db91ea32 | 127 | return 0; |
d025f1e4 ZJS |
128 | |
129 | for (;;) { | |
130 | struct stat st; | |
131 | struct dirent *de; | |
d025f1e4 | 132 | |
0371ca0d FW |
133 | errno = 0; |
134 | de = readdir(d); | |
135 | if (!de && errno != 0) | |
136 | return 0; | |
d025f1e4 ZJS |
137 | |
138 | if (!de) | |
139 | break; | |
140 | ||
141 | if (!endswith(de->d_name, ".journal") && | |
142 | !endswith(de->d_name, ".journal~")) | |
143 | continue; | |
144 | ||
145 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) | |
146 | continue; | |
147 | ||
148 | if (!S_ISREG(st.st_mode)) | |
149 | continue; | |
150 | ||
151 | sum += (uint64_t) st.st_blocks * 512UL; | |
152 | } | |
153 | ||
d025f1e4 ZJS |
154 | ss_avail = ss.f_bsize * ss.f_bavail; |
155 | ||
348ced90 ZJS |
156 | /* If we reached a high mark, we will always allow this much |
157 | * again, unless usage goes above max_use. This watermark | |
158 | * value is cached so that we don't give up space on pressure, | |
159 | * but hover below the maximum usage. */ | |
160 | ||
161 | if (m->use < sum) | |
162 | m->use = sum; | |
163 | ||
164 | avail = LESS_BY(ss_avail, m->keep_free); | |
165 | ||
166 | s->cached_available_space = LESS_BY(MIN(m->max_use, avail), sum); | |
d025f1e4 ZJS |
167 | s->cached_available_space_timestamp = ts; |
168 | ||
670b110c ZJS |
169 | if (verbose) { |
170 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
171 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX]; | |
172 | ||
173 | server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE, | |
348ced90 ZJS |
174 | "%s journal is using %s (max allowed %s, " |
175 | "trying to leave %s free of %s available → current limit %s).", | |
670b110c ZJS |
176 | s->system_journal ? "Permanent" : "Runtime", |
177 | format_bytes(fb1, sizeof(fb1), sum), | |
178 | format_bytes(fb2, sizeof(fb2), m->max_use), | |
179 | format_bytes(fb3, sizeof(fb3), m->keep_free), | |
180 | format_bytes(fb4, sizeof(fb4), ss_avail), | |
348ced90 | 181 | format_bytes(fb5, sizeof(fb5), s->cached_available_space + sum)); |
670b110c ZJS |
182 | } |
183 | ||
184 | return s->cached_available_space; | |
d025f1e4 ZJS |
185 | } |
186 | ||
d025f1e4 ZJS |
187 | void server_fix_perms(Server *s, JournalFile *f, uid_t uid) { |
188 | int r; | |
189 | #ifdef HAVE_ACL | |
190 | acl_t acl; | |
191 | acl_entry_t entry; | |
192 | acl_permset_t permset; | |
193 | #endif | |
194 | ||
195 | assert(f); | |
196 | ||
4608af43 | 197 | r = fchmod(f->fd, 0640); |
d025f1e4 | 198 | if (r < 0) |
da927ba9 | 199 | log_warning_errno(r, "Failed to fix access mode on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
200 | |
201 | #ifdef HAVE_ACL | |
34c10968 | 202 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
203 | return; |
204 | ||
205 | acl = acl_get_fd(f->fd); | |
206 | if (!acl) { | |
56f64d95 | 207 | log_warning_errno(errno, "Failed to read ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
208 | return; |
209 | } | |
210 | ||
211 | r = acl_find_uid(acl, uid, &entry); | |
212 | if (r <= 0) { | |
213 | ||
214 | if (acl_create_entry(&acl, &entry) < 0 || | |
215 | acl_set_tag_type(entry, ACL_USER) < 0 || | |
216 | acl_set_qualifier(entry, &uid) < 0) { | |
56f64d95 | 217 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
218 | goto finish; |
219 | } | |
220 | } | |
221 | ||
23ad4dd8 JAS |
222 | /* We do not recalculate the mask unconditionally here, |
223 | * so that the fchmod() mask above stays intact. */ | |
d025f1e4 | 224 | if (acl_get_permset(entry, &permset) < 0 || |
23ad4dd8 JAS |
225 | acl_add_perm(permset, ACL_READ) < 0 || |
226 | calc_acl_mask_if_needed(&acl) < 0) { | |
56f64d95 | 227 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
228 | goto finish; |
229 | } | |
230 | ||
231 | if (acl_set_fd(f->fd, acl) < 0) | |
56f64d95 | 232 | log_warning_errno(errno, "Failed to set ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
233 | |
234 | finish: | |
235 | acl_free(acl); | |
236 | #endif | |
237 | } | |
238 | ||
239 | static JournalFile* find_journal(Server *s, uid_t uid) { | |
ed375beb | 240 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
241 | int r; |
242 | JournalFile *f; | |
243 | sd_id128_t machine; | |
244 | ||
245 | assert(s); | |
246 | ||
247 | /* We split up user logs only on /var, not on /run. If the | |
248 | * runtime file is open, we write to it exclusively, in order | |
249 | * to guarantee proper order as soon as we flush /run to | |
250 | * /var and close the runtime file. */ | |
251 | ||
252 | if (s->runtime_journal) | |
253 | return s->runtime_journal; | |
254 | ||
f7dc3ab9 | 255 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
256 | return s->system_journal; |
257 | ||
258 | r = sd_id128_get_machine(&machine); | |
259 | if (r < 0) | |
260 | return s->system_journal; | |
261 | ||
43cf8388 | 262 | f = ordered_hashmap_get(s->user_journals, UINT32_TO_PTR(uid)); |
d025f1e4 ZJS |
263 | if (f) |
264 | return f; | |
265 | ||
de0671ee ZJS |
266 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
267 | SD_ID128_FORMAT_VAL(machine), uid) < 0) | |
d025f1e4 ZJS |
268 | return s->system_journal; |
269 | ||
43cf8388 | 270 | while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { |
d025f1e4 | 271 | /* Too many open? Then let's close one */ |
43cf8388 | 272 | f = ordered_hashmap_steal_first(s->user_journals); |
d025f1e4 ZJS |
273 | assert(f); |
274 | journal_file_close(f); | |
275 | } | |
276 | ||
cbd67177 | 277 | r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f); |
d025f1e4 ZJS |
278 | if (r < 0) |
279 | return s->system_journal; | |
280 | ||
281 | server_fix_perms(s, f, uid); | |
282 | ||
43cf8388 | 283 | r = ordered_hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f); |
d025f1e4 ZJS |
284 | if (r < 0) { |
285 | journal_file_close(f); | |
286 | return s->system_journal; | |
287 | } | |
288 | ||
289 | return f; | |
290 | } | |
291 | ||
ea69bd41 LP |
292 | static int do_rotate( |
293 | Server *s, | |
294 | JournalFile **f, | |
295 | const char* name, | |
296 | bool seal, | |
297 | uint32_t uid) { | |
298 | ||
fc55baee ZJS |
299 | int r; |
300 | assert(s); | |
301 | ||
302 | if (!*f) | |
303 | return -EINVAL; | |
304 | ||
305 | r = journal_file_rotate(f, s->compress, seal); | |
306 | if (r < 0) | |
307 | if (*f) | |
ea69bd41 | 308 | log_error_errno(r, "Failed to rotate %s: %m", (*f)->path); |
fc55baee | 309 | else |
ea69bd41 | 310 | log_error_errno(r, "Failed to create new %s journal: %m", name); |
fc55baee ZJS |
311 | else |
312 | server_fix_perms(s, *f, uid); | |
2678031a | 313 | |
fc55baee ZJS |
314 | return r; |
315 | } | |
316 | ||
d025f1e4 ZJS |
317 | void server_rotate(Server *s) { |
318 | JournalFile *f; | |
319 | void *k; | |
320 | Iterator i; | |
321 | int r; | |
322 | ||
323 | log_debug("Rotating..."); | |
324 | ||
fc55baee ZJS |
325 | do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
326 | do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 | 327 | |
43cf8388 | 328 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
fc55baee ZJS |
329 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k)); |
330 | if (r >= 0) | |
43cf8388 | 331 | ordered_hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
332 | else if (!f) |
333 | /* Old file has been closed and deallocated */ | |
43cf8388 | 334 | ordered_hashmap_remove(s->user_journals, k); |
d025f1e4 ZJS |
335 | } |
336 | } | |
337 | ||
26687bf8 OS |
338 | void server_sync(Server *s) { |
339 | JournalFile *f; | |
340 | void *k; | |
341 | Iterator i; | |
342 | int r; | |
343 | ||
26687bf8 OS |
344 | if (s->system_journal) { |
345 | r = journal_file_set_offline(s->system_journal); | |
346 | if (r < 0) | |
da927ba9 | 347 | log_error_errno(r, "Failed to sync system journal: %m"); |
26687bf8 OS |
348 | } |
349 | ||
43cf8388 | 350 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
26687bf8 OS |
351 | r = journal_file_set_offline(f); |
352 | if (r < 0) | |
da927ba9 | 353 | log_error_errno(r, "Failed to sync user journal: %m"); |
26687bf8 OS |
354 | } |
355 | ||
f9a810be LP |
356 | if (s->sync_event_source) { |
357 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
358 | if (r < 0) | |
da927ba9 | 359 | log_error_errno(r, "Failed to disable sync timer source: %m"); |
f9a810be | 360 | } |
26687bf8 OS |
361 | |
362 | s->sync_scheduled = false; | |
363 | } | |
364 | ||
ea69bd41 LP |
365 | static void do_vacuum( |
366 | Server *s, | |
367 | const char *id, | |
368 | JournalFile *f, | |
369 | const char* path, | |
370 | JournalMetrics *metrics) { | |
371 | ||
372 | const char *p; | |
63c8666b ZJS |
373 | int r; |
374 | ||
375 | if (!f) | |
376 | return; | |
377 | ||
63c372cb | 378 | p = strjoina(path, id); |
dbd2a83f | 379 | r = journal_directory_vacuum(p, metrics->max_use, s->max_retention_usec, &s->oldest_file_usec, false); |
63c8666b | 380 | if (r < 0 && r != -ENOENT) |
da927ba9 | 381 | log_error_errno(r, "Failed to vacuum %s: %m", p); |
63c8666b ZJS |
382 | } |
383 | ||
d025f1e4 | 384 | void server_vacuum(Server *s) { |
d025f1e4 ZJS |
385 | char ids[33]; |
386 | sd_id128_t machine; | |
387 | int r; | |
388 | ||
389 | log_debug("Vacuuming..."); | |
390 | ||
391 | s->oldest_file_usec = 0; | |
392 | ||
393 | r = sd_id128_get_machine(&machine); | |
394 | if (r < 0) { | |
da927ba9 | 395 | log_error_errno(r, "Failed to get machine ID: %m"); |
d025f1e4 ZJS |
396 | return; |
397 | } | |
d025f1e4 ZJS |
398 | sd_id128_to_string(machine, ids); |
399 | ||
63c8666b ZJS |
400 | do_vacuum(s, ids, s->system_journal, "/var/log/journal/", &s->system_metrics); |
401 | do_vacuum(s, ids, s->runtime_journal, "/run/log/journal/", &s->runtime_metrics); | |
d025f1e4 ZJS |
402 | |
403 | s->cached_available_space_timestamp = 0; | |
404 | } | |
405 | ||
0c24bb23 LP |
406 | static void server_cache_machine_id(Server *s) { |
407 | sd_id128_t id; | |
408 | int r; | |
409 | ||
410 | assert(s); | |
411 | ||
412 | r = sd_id128_get_machine(&id); | |
413 | if (r < 0) | |
414 | return; | |
415 | ||
416 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
417 | } | |
418 | ||
419 | static void server_cache_boot_id(Server *s) { | |
420 | sd_id128_t id; | |
421 | int r; | |
422 | ||
423 | assert(s); | |
424 | ||
425 | r = sd_id128_get_boot(&id); | |
426 | if (r < 0) | |
427 | return; | |
428 | ||
429 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
430 | } | |
431 | ||
432 | static void server_cache_hostname(Server *s) { | |
433 | _cleanup_free_ char *t = NULL; | |
434 | char *x; | |
435 | ||
436 | assert(s); | |
437 | ||
438 | t = gethostname_malloc(); | |
439 | if (!t) | |
440 | return; | |
441 | ||
442 | x = strappend("_HOSTNAME=", t); | |
443 | if (!x) | |
444 | return; | |
445 | ||
446 | free(s->hostname_field); | |
447 | s->hostname_field = x; | |
448 | } | |
449 | ||
8531ae70 | 450 | static bool shall_try_append_again(JournalFile *f, int r) { |
d025f1e4 ZJS |
451 | |
452 | /* -E2BIG Hit configured limit | |
453 | -EFBIG Hit fs limit | |
454 | -EDQUOT Quota limit hit | |
455 | -ENOSPC Disk full | |
fa6ac760 | 456 | -EIO I/O error of some kind (mmap) |
d025f1e4 ZJS |
457 | -EHOSTDOWN Other machine |
458 | -EBUSY Unclean shutdown | |
459 | -EPROTONOSUPPORT Unsupported feature | |
460 | -EBADMSG Corrupted | |
461 | -ENODATA Truncated | |
2678031a LP |
462 | -ESHUTDOWN Already archived |
463 | -EIDRM Journal file has been deleted */ | |
d025f1e4 ZJS |
464 | |
465 | if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC) | |
466 | log_debug("%s: Allocation limit reached, rotating.", f->path); | |
467 | else if (r == -EHOSTDOWN) | |
468 | log_info("%s: Journal file from other machine, rotating.", f->path); | |
469 | else if (r == -EBUSY) | |
470 | log_info("%s: Unclean shutdown, rotating.", f->path); | |
471 | else if (r == -EPROTONOSUPPORT) | |
472 | log_info("%s: Unsupported feature, rotating.", f->path); | |
473 | else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN) | |
474 | log_warning("%s: Journal file corrupted, rotating.", f->path); | |
fa6ac760 LP |
475 | else if (r == -EIO) |
476 | log_warning("%s: IO error, rotating.", f->path); | |
2678031a LP |
477 | else if (r == -EIDRM) |
478 | log_warning("%s: Journal file has been deleted, rotating.", f->path); | |
d025f1e4 ZJS |
479 | else |
480 | return false; | |
481 | ||
482 | return true; | |
483 | } | |
484 | ||
d07f7b9e | 485 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) { |
d025f1e4 ZJS |
486 | JournalFile *f; |
487 | bool vacuumed = false; | |
488 | int r; | |
489 | ||
490 | assert(s); | |
491 | assert(iovec); | |
492 | assert(n > 0); | |
493 | ||
494 | f = find_journal(s, uid); | |
495 | if (!f) | |
496 | return; | |
497 | ||
498 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
499 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
500 | server_rotate(s); | |
501 | server_vacuum(s); | |
502 | vacuumed = true; | |
503 | ||
504 | f = find_journal(s, uid); | |
505 | if (!f) | |
506 | return; | |
507 | } | |
508 | ||
509 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
26687bf8 | 510 | if (r >= 0) { |
d07f7b9e | 511 | server_schedule_sync(s, priority); |
d025f1e4 | 512 | return; |
26687bf8 | 513 | } |
d025f1e4 ZJS |
514 | |
515 | if (vacuumed || !shall_try_append_again(f, r)) { | |
8266e1c0 | 516 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); |
d025f1e4 ZJS |
517 | return; |
518 | } | |
519 | ||
520 | server_rotate(s); | |
521 | server_vacuum(s); | |
522 | ||
523 | f = find_journal(s, uid); | |
524 | if (!f) | |
525 | return; | |
526 | ||
527 | log_debug("Retrying write."); | |
528 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
8266e1c0 LP |
529 | if (r < 0) |
530 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); | |
531 | else | |
d07f7b9e | 532 | server_schedule_sync(s, priority); |
d025f1e4 ZJS |
533 | } |
534 | ||
535 | static void dispatch_message_real( | |
536 | Server *s, | |
537 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
538 | const struct ucred *ucred, |
539 | const struct timeval *tv, | |
d025f1e4 | 540 | const char *label, size_t label_len, |
968f3196 | 541 | const char *unit_id, |
d07f7b9e | 542 | int priority, |
968f3196 | 543 | pid_t object_pid) { |
d025f1e4 | 544 | |
968f3196 | 545 | char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)], |
ae018d9b LP |
546 | uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)], |
547 | gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)], | |
548 | owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)], | |
d3789917 | 549 | source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)], |
968f3196 ZJS |
550 | o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)], |
551 | o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)], | |
552 | o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)]; | |
553 | uid_t object_uid; | |
554 | gid_t object_gid; | |
968f3196 | 555 | char *x; |
d025f1e4 | 556 | int r; |
ae018d9b | 557 | char *t, *c; |
82499507 LP |
558 | uid_t realuid = 0, owner = 0, journal_uid; |
559 | bool owner_valid = false; | |
ae018d9b | 560 | #ifdef HAVE_AUDIT |
968f3196 ZJS |
561 | char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], |
562 | audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)], | |
563 | o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], | |
564 | o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)]; | |
ae018d9b LP |
565 | |
566 | uint32_t audit; | |
567 | uid_t loginuid; | |
568 | #endif | |
d025f1e4 ZJS |
569 | |
570 | assert(s); | |
571 | assert(iovec); | |
572 | assert(n > 0); | |
968f3196 | 573 | assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m); |
d025f1e4 ZJS |
574 | |
575 | if (ucred) { | |
d025f1e4 ZJS |
576 | realuid = ucred->uid; |
577 | ||
de0671ee | 578 | sprintf(pid, "_PID="PID_FMT, ucred->pid); |
c2457105 | 579 | IOVEC_SET_STRING(iovec[n++], pid); |
d025f1e4 | 580 | |
de0671ee | 581 | sprintf(uid, "_UID="UID_FMT, ucred->uid); |
c2457105 | 582 | IOVEC_SET_STRING(iovec[n++], uid); |
d025f1e4 | 583 | |
de0671ee | 584 | sprintf(gid, "_GID="GID_FMT, ucred->gid); |
c2457105 | 585 | IOVEC_SET_STRING(iovec[n++], gid); |
d025f1e4 ZJS |
586 | |
587 | r = get_process_comm(ucred->pid, &t); | |
588 | if (r >= 0) { | |
63c372cb | 589 | x = strjoina("_COMM=", t); |
d025f1e4 | 590 | free(t); |
968f3196 | 591 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
592 | } |
593 | ||
594 | r = get_process_exe(ucred->pid, &t); | |
595 | if (r >= 0) { | |
63c372cb | 596 | x = strjoina("_EXE=", t); |
d025f1e4 | 597 | free(t); |
968f3196 | 598 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
599 | } |
600 | ||
9bdbc2e2 | 601 | r = get_process_cmdline(ucred->pid, 0, false, &t); |
d025f1e4 | 602 | if (r >= 0) { |
63c372cb | 603 | x = strjoina("_CMDLINE=", t); |
d025f1e4 | 604 | free(t); |
3a832116 SL |
605 | IOVEC_SET_STRING(iovec[n++], x); |
606 | } | |
607 | ||
608 | r = get_process_capeff(ucred->pid, &t); | |
609 | if (r >= 0) { | |
63c372cb | 610 | x = strjoina("_CAP_EFFECTIVE=", t); |
3a832116 | 611 | free(t); |
968f3196 | 612 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
613 | } |
614 | ||
0a20e3c1 | 615 | #ifdef HAVE_AUDIT |
d025f1e4 | 616 | r = audit_session_from_pid(ucred->pid, &audit); |
ae018d9b | 617 | if (r >= 0) { |
de0671ee | 618 | sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit); |
ae018d9b LP |
619 | IOVEC_SET_STRING(iovec[n++], audit_session); |
620 | } | |
d025f1e4 ZJS |
621 | |
622 | r = audit_loginuid_from_pid(ucred->pid, &loginuid); | |
7027ff61 | 623 | if (r >= 0) { |
de0671ee | 624 | sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid); |
ae018d9b | 625 | IOVEC_SET_STRING(iovec[n++], audit_loginuid); |
d025f1e4 | 626 | } |
ae018d9b | 627 | #endif |
d025f1e4 | 628 | |
e9174f29 | 629 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c); |
7027ff61 | 630 | if (r >= 0) { |
968f3196 ZJS |
631 | char *session = NULL; |
632 | ||
63c372cb | 633 | x = strjoina("_SYSTEMD_CGROUP=", c); |
968f3196 | 634 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 | 635 | |
ae018d9b LP |
636 | r = cg_path_get_session(c, &t); |
637 | if (r >= 0) { | |
63c372cb | 638 | session = strjoina("_SYSTEMD_SESSION=", t); |
ae018d9b | 639 | free(t); |
d025f1e4 | 640 | IOVEC_SET_STRING(iovec[n++], session); |
ae018d9b LP |
641 | } |
642 | ||
643 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
644 | owner_valid = true; | |
d025f1e4 | 645 | |
de0671ee | 646 | sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner); |
d025f1e4 | 647 | IOVEC_SET_STRING(iovec[n++], owner_uid); |
ae018d9b | 648 | } |
d025f1e4 | 649 | |
ae018d9b | 650 | if (cg_path_get_unit(c, &t) >= 0) { |
63c372cb | 651 | x = strjoina("_SYSTEMD_UNIT=", t); |
ae018d9b | 652 | free(t); |
19cace37 LP |
653 | IOVEC_SET_STRING(iovec[n++], x); |
654 | } else if (unit_id && !session) { | |
63c372cb | 655 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
19cace37 LP |
656 | IOVEC_SET_STRING(iovec[n++], x); |
657 | } | |
658 | ||
659 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 660 | x = strjoina("_SYSTEMD_USER_UNIT=", t); |
ae018d9b | 661 | free(t); |
968f3196 | 662 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 663 | } else if (unit_id && session) { |
63c372cb | 664 | x = strjoina("_SYSTEMD_USER_UNIT=", unit_id); |
19cace37 LP |
665 | IOVEC_SET_STRING(iovec[n++], x); |
666 | } | |
ae018d9b | 667 | |
0a244b8e | 668 | if (cg_path_get_slice(c, &t) >= 0) { |
63c372cb | 669 | x = strjoina("_SYSTEMD_SLICE=", t); |
0a244b8e LP |
670 | free(t); |
671 | IOVEC_SET_STRING(iovec[n++], x); | |
672 | } | |
673 | ||
ae018d9b | 674 | free(c); |
2d43b190 | 675 | } else if (unit_id) { |
63c372cb | 676 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
2d43b190 | 677 | IOVEC_SET_STRING(iovec[n++], x); |
ef1673d1 | 678 | } |
d025f1e4 | 679 | |
d025f1e4 | 680 | #ifdef HAVE_SELINUX |
6baa7db0 | 681 | if (mac_selinux_use()) { |
d682b3a7 | 682 | if (label) { |
f8294e41 | 683 | x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1); |
ae018d9b | 684 | |
d682b3a7 LP |
685 | *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0; |
686 | IOVEC_SET_STRING(iovec[n++], x); | |
687 | } else { | |
688 | security_context_t con; | |
d025f1e4 | 689 | |
d682b3a7 | 690 | if (getpidcon(ucred->pid, &con) >= 0) { |
63c372cb | 691 | x = strjoina("_SELINUX_CONTEXT=", con); |
e7ff4e7f | 692 | |
d682b3a7 LP |
693 | freecon(con); |
694 | IOVEC_SET_STRING(iovec[n++], x); | |
695 | } | |
d025f1e4 ZJS |
696 | } |
697 | } | |
698 | #endif | |
699 | } | |
968f3196 ZJS |
700 | assert(n <= m); |
701 | ||
702 | if (object_pid) { | |
703 | r = get_process_uid(object_pid, &object_uid); | |
704 | if (r >= 0) { | |
de0671ee | 705 | sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid); |
968f3196 ZJS |
706 | IOVEC_SET_STRING(iovec[n++], o_uid); |
707 | } | |
708 | ||
709 | r = get_process_gid(object_pid, &object_gid); | |
710 | if (r >= 0) { | |
de0671ee | 711 | sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid); |
968f3196 ZJS |
712 | IOVEC_SET_STRING(iovec[n++], o_gid); |
713 | } | |
714 | ||
715 | r = get_process_comm(object_pid, &t); | |
716 | if (r >= 0) { | |
63c372cb | 717 | x = strjoina("OBJECT_COMM=", t); |
968f3196 ZJS |
718 | free(t); |
719 | IOVEC_SET_STRING(iovec[n++], x); | |
720 | } | |
721 | ||
722 | r = get_process_exe(object_pid, &t); | |
723 | if (r >= 0) { | |
63c372cb | 724 | x = strjoina("OBJECT_EXE=", t); |
968f3196 ZJS |
725 | free(t); |
726 | IOVEC_SET_STRING(iovec[n++], x); | |
727 | } | |
728 | ||
729 | r = get_process_cmdline(object_pid, 0, false, &t); | |
730 | if (r >= 0) { | |
63c372cb | 731 | x = strjoina("OBJECT_CMDLINE=", t); |
968f3196 ZJS |
732 | free(t); |
733 | IOVEC_SET_STRING(iovec[n++], x); | |
734 | } | |
735 | ||
736 | #ifdef HAVE_AUDIT | |
737 | r = audit_session_from_pid(object_pid, &audit); | |
738 | if (r >= 0) { | |
de0671ee | 739 | sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit); |
968f3196 ZJS |
740 | IOVEC_SET_STRING(iovec[n++], o_audit_session); |
741 | } | |
742 | ||
743 | r = audit_loginuid_from_pid(object_pid, &loginuid); | |
744 | if (r >= 0) { | |
de0671ee | 745 | sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid); |
968f3196 ZJS |
746 | IOVEC_SET_STRING(iovec[n++], o_audit_loginuid); |
747 | } | |
748 | #endif | |
749 | ||
e9174f29 | 750 | r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c); |
968f3196 | 751 | if (r >= 0) { |
63c372cb | 752 | x = strjoina("OBJECT_SYSTEMD_CGROUP=", c); |
968f3196 ZJS |
753 | IOVEC_SET_STRING(iovec[n++], x); |
754 | ||
755 | r = cg_path_get_session(c, &t); | |
756 | if (r >= 0) { | |
63c372cb | 757 | x = strjoina("OBJECT_SYSTEMD_SESSION=", t); |
968f3196 ZJS |
758 | free(t); |
759 | IOVEC_SET_STRING(iovec[n++], x); | |
760 | } | |
761 | ||
762 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
de0671ee | 763 | sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner); |
968f3196 ZJS |
764 | IOVEC_SET_STRING(iovec[n++], o_owner_uid); |
765 | } | |
766 | ||
767 | if (cg_path_get_unit(c, &t) >= 0) { | |
63c372cb | 768 | x = strjoina("OBJECT_SYSTEMD_UNIT=", t); |
968f3196 | 769 | free(t); |
19cace37 LP |
770 | IOVEC_SET_STRING(iovec[n++], x); |
771 | } | |
772 | ||
773 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 774 | x = strjoina("OBJECT_SYSTEMD_USER_UNIT=", t); |
968f3196 | 775 | free(t); |
968f3196 | 776 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 777 | } |
968f3196 ZJS |
778 | |
779 | free(c); | |
780 | } | |
781 | } | |
782 | assert(n <= m); | |
d025f1e4 ZJS |
783 | |
784 | if (tv) { | |
ae018d9b | 785 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv)); |
a5693989 | 786 | IOVEC_SET_STRING(iovec[n++], source_time); |
d025f1e4 ZJS |
787 | } |
788 | ||
789 | /* Note that strictly speaking storing the boot id here is | |
790 | * redundant since the entry includes this in-line | |
791 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 LP |
792 | if (!isempty(s->boot_id_field)) |
793 | IOVEC_SET_STRING(iovec[n++], s->boot_id_field); | |
d025f1e4 | 794 | |
0c24bb23 LP |
795 | if (!isempty(s->machine_id_field)) |
796 | IOVEC_SET_STRING(iovec[n++], s->machine_id_field); | |
d025f1e4 | 797 | |
0c24bb23 LP |
798 | if (!isempty(s->hostname_field)) |
799 | IOVEC_SET_STRING(iovec[n++], s->hostname_field); | |
d025f1e4 ZJS |
800 | |
801 | assert(n <= m); | |
802 | ||
da499392 | 803 | if (s->split_mode == SPLIT_UID && realuid > 0) |
40adcda8 | 804 | /* Split up strictly by any UID */ |
759c945a | 805 | journal_uid = realuid; |
82499507 | 806 | else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0) |
edc3797f LP |
807 | /* Split up by login UIDs. We do this only if the |
808 | * realuid is not root, in order not to accidentally | |
809 | * leak privileged information to the user that is | |
810 | * logged by a privileged process that is part of an | |
7517e174 | 811 | * unprivileged session. */ |
8a0889df | 812 | journal_uid = owner; |
da499392 KS |
813 | else |
814 | journal_uid = 0; | |
759c945a | 815 | |
d07f7b9e | 816 | write_to_journal(s, journal_uid, iovec, n, priority); |
d025f1e4 ZJS |
817 | } |
818 | ||
819 | void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) { | |
820 | char mid[11 + 32 + 1]; | |
821 | char buffer[16 + LINE_MAX + 1]; | |
822 | struct iovec iovec[N_IOVEC_META_FIELDS + 4]; | |
823 | int n = 0; | |
824 | va_list ap; | |
b92bea5d | 825 | struct ucred ucred = {}; |
d025f1e4 ZJS |
826 | |
827 | assert(s); | |
828 | assert(format); | |
829 | ||
830 | IOVEC_SET_STRING(iovec[n++], "PRIORITY=6"); | |
831 | IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver"); | |
832 | ||
833 | memcpy(buffer, "MESSAGE=", 8); | |
834 | va_start(ap, format); | |
835 | vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap); | |
836 | va_end(ap); | |
d025f1e4 ZJS |
837 | IOVEC_SET_STRING(iovec[n++], buffer); |
838 | ||
839 | if (!sd_id128_equal(message_id, SD_ID128_NULL)) { | |
e2cc6eca | 840 | snprintf(mid, sizeof(mid), LOG_MESSAGE_ID(message_id)); |
d025f1e4 ZJS |
841 | IOVEC_SET_STRING(iovec[n++], mid); |
842 | } | |
843 | ||
d025f1e4 ZJS |
844 | ucred.pid = getpid(); |
845 | ucred.uid = getuid(); | |
846 | ucred.gid = getgid(); | |
847 | ||
d07f7b9e | 848 | dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL, LOG_INFO, 0); |
d025f1e4 ZJS |
849 | } |
850 | ||
851 | void server_dispatch_message( | |
852 | Server *s, | |
853 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
854 | const struct ucred *ucred, |
855 | const struct timeval *tv, | |
d025f1e4 ZJS |
856 | const char *label, size_t label_len, |
857 | const char *unit_id, | |
968f3196 ZJS |
858 | int priority, |
859 | pid_t object_pid) { | |
d025f1e4 | 860 | |
7027ff61 | 861 | int rl, r; |
7fd1b19b | 862 | _cleanup_free_ char *path = NULL; |
db91ea32 | 863 | char *c; |
d025f1e4 ZJS |
864 | |
865 | assert(s); | |
866 | assert(iovec || n == 0); | |
867 | ||
868 | if (n == 0) | |
869 | return; | |
870 | ||
871 | if (LOG_PRI(priority) > s->max_level_store) | |
872 | return; | |
873 | ||
2f5df74a HHPF |
874 | /* Stop early in case the information will not be stored |
875 | * in a journal. */ | |
876 | if (s->storage == STORAGE_NONE) | |
877 | return; | |
878 | ||
d025f1e4 ZJS |
879 | if (!ucred) |
880 | goto finish; | |
881 | ||
e9174f29 | 882 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path); |
7027ff61 | 883 | if (r < 0) |
d025f1e4 ZJS |
884 | goto finish; |
885 | ||
886 | /* example: /user/lennart/3/foobar | |
887 | * /system/dbus.service/foobar | |
888 | * | |
889 | * So let's cut of everything past the third /, since that is | |
890 | * where user directories start */ | |
891 | ||
892 | c = strchr(path, '/'); | |
893 | if (c) { | |
894 | c = strchr(c+1, '/'); | |
895 | if (c) { | |
896 | c = strchr(c+1, '/'); | |
897 | if (c) | |
898 | *c = 0; | |
899 | } | |
900 | } | |
901 | ||
db91ea32 | 902 | rl = journal_rate_limit_test(s->rate_limit, path, |
670b110c | 903 | priority & LOG_PRIMASK, available_space(s, false)); |
d025f1e4 | 904 | |
db91ea32 | 905 | if (rl == 0) |
d025f1e4 | 906 | return; |
d025f1e4 ZJS |
907 | |
908 | /* Write a suppression message if we suppressed something */ | |
909 | if (rl > 1) | |
db91ea32 ZJS |
910 | server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, |
911 | "Suppressed %u messages from %s", rl - 1, path); | |
d025f1e4 ZJS |
912 | |
913 | finish: | |
d07f7b9e | 914 | dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id, priority, object_pid); |
d025f1e4 ZJS |
915 | } |
916 | ||
917 | ||
caa2f4c0 | 918 | static int system_journal_open(Server *s, bool flush_requested) { |
d025f1e4 ZJS |
919 | int r; |
920 | char *fn; | |
921 | sd_id128_t machine; | |
922 | char ids[33]; | |
923 | ||
924 | r = sd_id128_get_machine(&machine); | |
23bbb0de MS |
925 | if (r < 0) |
926 | return log_error_errno(r, "Failed to get machine id: %m"); | |
d025f1e4 ZJS |
927 | |
928 | sd_id128_to_string(machine, ids); | |
929 | ||
930 | if (!s->system_journal && | |
931 | (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) && | |
caa2f4c0 ZJS |
932 | (flush_requested |
933 | || access("/run/systemd/journal/flushed", F_OK) >= 0)) { | |
d025f1e4 ZJS |
934 | |
935 | /* If in auto mode: first try to create the machine | |
936 | * path, but not the prefix. | |
937 | * | |
938 | * If in persistent mode: create /var/log/journal and | |
939 | * the machine path */ | |
940 | ||
941 | if (s->storage == STORAGE_PERSISTENT) | |
942 | (void) mkdir("/var/log/journal/", 0755); | |
943 | ||
63c372cb | 944 | fn = strjoina("/var/log/journal/", ids); |
d025f1e4 | 945 | (void) mkdir(fn, 0755); |
d025f1e4 | 946 | |
63c372cb | 947 | fn = strjoina(fn, "/system.journal"); |
d025f1e4 | 948 | 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 | 949 | |
670b110c | 950 | if (r >= 0) |
d025f1e4 | 951 | server_fix_perms(s, s->system_journal, 0); |
433dd100 LN |
952 | else if (r < 0) { |
953 | if (r != -ENOENT && r != -EROFS) | |
da927ba9 | 954 | log_warning_errno(r, "Failed to open system journal: %m"); |
e40ec7ae | 955 | |
433dd100 LN |
956 | r = 0; |
957 | } | |
d025f1e4 ZJS |
958 | } |
959 | ||
960 | if (!s->runtime_journal && | |
961 | (s->storage != STORAGE_NONE)) { | |
962 | ||
963 | fn = strjoin("/run/log/journal/", ids, "/system.journal", NULL); | |
964 | if (!fn) | |
965 | return -ENOMEM; | |
966 | ||
967 | if (s->system_journal) { | |
968 | ||
969 | /* Try to open the runtime journal, but only | |
970 | * if it already exists, so that we can flush | |
971 | * it into the system journal */ | |
972 | ||
973 | r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); | |
974 | free(fn); | |
975 | ||
976 | if (r < 0) { | |
977 | if (r != -ENOENT) | |
da927ba9 | 978 | log_warning_errno(r, "Failed to open runtime journal: %m"); |
d025f1e4 ZJS |
979 | |
980 | r = 0; | |
981 | } | |
982 | ||
983 | } else { | |
984 | ||
985 | /* OK, we really need the runtime journal, so create | |
986 | * it if necessary. */ | |
987 | ||
fc1d70af LP |
988 | (void) mkdir("/run/log", 0755); |
989 | (void) mkdir("/run/log/journal", 0755); | |
990 | (void) mkdir_parents(fn, 0750); | |
991 | ||
d025f1e4 ZJS |
992 | r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); |
993 | free(fn); | |
994 | ||
23bbb0de MS |
995 | if (r < 0) |
996 | return log_error_errno(r, "Failed to open runtime journal: %m"); | |
d025f1e4 ZJS |
997 | } |
998 | ||
670b110c | 999 | if (s->runtime_journal) |
d025f1e4 | 1000 | server_fix_perms(s, s->runtime_journal, 0); |
d025f1e4 ZJS |
1001 | } |
1002 | ||
670b110c ZJS |
1003 | available_space(s, true); |
1004 | ||
d025f1e4 ZJS |
1005 | return r; |
1006 | } | |
1007 | ||
1008 | int server_flush_to_var(Server *s) { | |
d025f1e4 ZJS |
1009 | sd_id128_t machine; |
1010 | sd_journal *j = NULL; | |
fbb63411 LP |
1011 | char ts[FORMAT_TIMESPAN_MAX]; |
1012 | usec_t start; | |
1013 | unsigned n = 0; | |
1014 | int r; | |
d025f1e4 ZJS |
1015 | |
1016 | assert(s); | |
1017 | ||
1018 | if (s->storage != STORAGE_AUTO && | |
1019 | s->storage != STORAGE_PERSISTENT) | |
1020 | return 0; | |
1021 | ||
1022 | if (!s->runtime_journal) | |
1023 | return 0; | |
1024 | ||
caa2f4c0 | 1025 | system_journal_open(s, true); |
d025f1e4 ZJS |
1026 | |
1027 | if (!s->system_journal) | |
1028 | return 0; | |
1029 | ||
1030 | log_debug("Flushing to /var..."); | |
1031 | ||
fbb63411 LP |
1032 | start = now(CLOCK_MONOTONIC); |
1033 | ||
d025f1e4 | 1034 | r = sd_id128_get_machine(&machine); |
00a16861 | 1035 | if (r < 0) |
d025f1e4 | 1036 | return r; |
d025f1e4 ZJS |
1037 | |
1038 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
23bbb0de MS |
1039 | if (r < 0) |
1040 | return log_error_errno(r, "Failed to read runtime journal: %m"); | |
d025f1e4 | 1041 | |
93b73b06 LP |
1042 | sd_journal_set_data_threshold(j, 0); |
1043 | ||
d025f1e4 ZJS |
1044 | SD_JOURNAL_FOREACH(j) { |
1045 | Object *o = NULL; | |
1046 | JournalFile *f; | |
1047 | ||
1048 | f = j->current_file; | |
1049 | assert(f && f->current_offset > 0); | |
1050 | ||
fbb63411 LP |
1051 | n++; |
1052 | ||
d025f1e4 ZJS |
1053 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1054 | if (r < 0) { | |
da927ba9 | 1055 | log_error_errno(r, "Can't read entry: %m"); |
d025f1e4 ZJS |
1056 | goto finish; |
1057 | } | |
1058 | ||
1059 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1060 | if (r >= 0) | |
1061 | continue; | |
1062 | ||
1063 | if (!shall_try_append_again(s->system_journal, r)) { | |
da927ba9 | 1064 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1065 | goto finish; |
1066 | } | |
1067 | ||
1068 | server_rotate(s); | |
1069 | server_vacuum(s); | |
1070 | ||
253f59df LP |
1071 | if (!s->system_journal) { |
1072 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1073 | r = -EIO; | |
1074 | goto finish; | |
1075 | } | |
1076 | ||
d025f1e4 ZJS |
1077 | log_debug("Retrying write."); |
1078 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1079 | if (r < 0) { | |
da927ba9 | 1080 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1081 | goto finish; |
1082 | } | |
1083 | } | |
1084 | ||
1085 | finish: | |
1086 | journal_file_post_change(s->system_journal); | |
1087 | ||
1088 | journal_file_close(s->runtime_journal); | |
1089 | s->runtime_journal = NULL; | |
1090 | ||
1091 | if (r >= 0) | |
c6878637 | 1092 | (void) rm_rf("/run/log/journal", REMOVE_ROOT); |
d025f1e4 | 1093 | |
763c7aa2 | 1094 | sd_journal_close(j); |
d025f1e4 | 1095 | |
fbb63411 LP |
1096 | 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); |
1097 | ||
d025f1e4 ZJS |
1098 | return r; |
1099 | } | |
1100 | ||
8531ae70 | 1101 | int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
f9a810be LP |
1102 | Server *s = userdata; |
1103 | ||
d025f1e4 | 1104 | assert(s); |
875c2e22 | 1105 | assert(fd == s->native_fd || fd == s->syslog_fd || fd == s->audit_fd); |
f9a810be LP |
1106 | |
1107 | if (revents != EPOLLIN) { | |
1108 | log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents); | |
1109 | return -EIO; | |
1110 | } | |
1111 | ||
1112 | for (;;) { | |
1113 | struct ucred *ucred = NULL; | |
1114 | struct timeval *tv = NULL; | |
1115 | struct cmsghdr *cmsg; | |
1116 | char *label = NULL; | |
1117 | size_t label_len = 0; | |
1118 | struct iovec iovec; | |
1119 | ||
1120 | union { | |
1121 | struct cmsghdr cmsghdr; | |
1122 | ||
bdd13f6b ZJS |
1123 | /* We use NAME_MAX space for the SELinux label |
1124 | * here. The kernel currently enforces no | |
1125 | * limit, but according to suggestions from | |
1126 | * the SELinux people this will change and it | |
1127 | * will probably be identical to NAME_MAX. For | |
1128 | * now we use that, but this should be updated | |
7517e174 | 1129 | * one day when the final limit is known. */ |
f9a810be LP |
1130 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + |
1131 | CMSG_SPACE(sizeof(struct timeval)) + | |
1132 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1133 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1134 | } control = {}; | |
875c2e22 | 1135 | union sockaddr_union sa = {}; |
f9a810be LP |
1136 | struct msghdr msghdr = { |
1137 | .msg_iov = &iovec, | |
1138 | .msg_iovlen = 1, | |
1139 | .msg_control = &control, | |
1140 | .msg_controllen = sizeof(control), | |
875c2e22 LP |
1141 | .msg_name = &sa, |
1142 | .msg_namelen = sizeof(sa), | |
f9a810be | 1143 | }; |
d025f1e4 | 1144 | |
d025f1e4 | 1145 | ssize_t n; |
f9a810be LP |
1146 | int *fds = NULL; |
1147 | unsigned n_fds = 0; | |
875c2e22 LP |
1148 | int v = 0; |
1149 | size_t m; | |
d025f1e4 | 1150 | |
875c2e22 LP |
1151 | /* Try to get the right size, if we can. (Not all |
1152 | * sockets support SIOCINQ, hence we just try, but | |
1153 | * don't rely on it. */ | |
1154 | (void) ioctl(fd, SIOCINQ, &v); | |
1155 | ||
7517e174 | 1156 | /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */ |
875c2e22 LP |
1157 | m = PAGE_ALIGN(MAX3((size_t) v + 1, |
1158 | (size_t) LINE_MAX, | |
1159 | ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1); | |
d025f1e4 | 1160 | |
875c2e22 | 1161 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m)) |
f9a810be | 1162 | return log_oom(); |
d025f1e4 | 1163 | |
f9a810be | 1164 | iovec.iov_base = s->buffer; |
875c2e22 | 1165 | iovec.iov_len = s->buffer_size - 1; /* Leave room for trailing NUL we add later */ |
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 | |
56f64d95 | 1172 | log_error_errno(errno, "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 | ||
875c2e22 LP |
1197 | /* And a trailing NUL, just in case */ |
1198 | s->buffer[n] = 0; | |
1199 | ||
f9a810be | 1200 | if (fd == s->syslog_fd) { |
875c2e22 | 1201 | if (n > 0 && n_fds == 0) |
f9a810be | 1202 | server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len); |
875c2e22 | 1203 | else if (n_fds > 0) |
f9a810be | 1204 | log_warning("Got file descriptors via syslog socket. Ignoring."); |
d025f1e4 | 1205 | |
875c2e22 | 1206 | } else if (fd == s->native_fd) { |
f9a810be LP |
1207 | if (n > 0 && n_fds == 0) |
1208 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1209 | else if (n == 0 && n_fds == 1) | |
1210 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1211 | else if (n_fds > 0) | |
1212 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
875c2e22 LP |
1213 | |
1214 | } else { | |
1215 | assert(fd == s->audit_fd); | |
1216 | ||
1217 | if (n > 0 && n_fds == 0) | |
0b97208d | 1218 | server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen); |
875c2e22 LP |
1219 | else if (n_fds > 0) |
1220 | log_warning("Got file descriptors via audit socket. Ignoring."); | |
d025f1e4 ZJS |
1221 | } |
1222 | ||
f9a810be LP |
1223 | close_many(fds, n_fds); |
1224 | } | |
f9a810be | 1225 | } |
d025f1e4 | 1226 | |
f9a810be LP |
1227 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1228 | Server *s = userdata; | |
d025f1e4 | 1229 | |
f9a810be | 1230 | assert(s); |
d025f1e4 | 1231 | |
f9a810be | 1232 | log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid); |
d025f1e4 | 1233 | |
f9a810be LP |
1234 | server_flush_to_var(s); |
1235 | server_sync(s); | |
3bfd4e0c | 1236 | server_vacuum(s); |
d025f1e4 | 1237 | |
74055aa7 LP |
1238 | touch("/run/systemd/journal/flushed"); |
1239 | ||
f9a810be LP |
1240 | return 0; |
1241 | } | |
d025f1e4 | 1242 | |
f9a810be LP |
1243 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1244 | Server *s = userdata; | |
d025f1e4 | 1245 | |
f9a810be | 1246 | assert(s); |
d025f1e4 | 1247 | |
f9a810be LP |
1248 | log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid); |
1249 | server_rotate(s); | |
1250 | server_vacuum(s); | |
d025f1e4 | 1251 | |
f9a810be LP |
1252 | return 0; |
1253 | } | |
d025f1e4 | 1254 | |
f9a810be LP |
1255 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1256 | Server *s = userdata; | |
d025f1e4 | 1257 | |
f9a810be | 1258 | assert(s); |
d025f1e4 | 1259 | |
4daf54a8 | 1260 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1261 | |
6203e07a | 1262 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1263 | return 0; |
1264 | } | |
1265 | ||
f9a810be | 1266 | static int setup_signals(Server *s) { |
d025f1e4 | 1267 | sigset_t mask; |
f9a810be | 1268 | int r; |
d025f1e4 ZJS |
1269 | |
1270 | assert(s); | |
1271 | ||
1272 | assert_se(sigemptyset(&mask) == 0); | |
1273 | sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1); | |
1274 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); | |
1275 | ||
151b9b96 | 1276 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1277 | if (r < 0) |
1278 | return r; | |
1279 | ||
151b9b96 | 1280 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1281 | if (r < 0) |
1282 | return r; | |
d025f1e4 | 1283 | |
151b9b96 | 1284 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1285 | if (r < 0) |
1286 | return r; | |
d025f1e4 | 1287 | |
151b9b96 | 1288 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1289 | if (r < 0) |
1290 | return r; | |
d025f1e4 ZJS |
1291 | |
1292 | return 0; | |
1293 | } | |
1294 | ||
1295 | static int server_parse_proc_cmdline(Server *s) { | |
7fd1b19b | 1296 | _cleanup_free_ char *line = NULL; |
a2a5291b | 1297 | const char *w, *state; |
d025f1e4 | 1298 | size_t l; |
74df0fca | 1299 | int r; |
d025f1e4 | 1300 | |
74df0fca | 1301 | r = proc_cmdline(&line); |
b5884878 | 1302 | if (r < 0) { |
da927ba9 | 1303 | log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m"); |
d025f1e4 | 1304 | return 0; |
b5884878 | 1305 | } |
d025f1e4 ZJS |
1306 | |
1307 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
7fd1b19b | 1308 | _cleanup_free_ char *word; |
d025f1e4 ZJS |
1309 | |
1310 | word = strndup(w, l); | |
db91ea32 ZJS |
1311 | if (!word) |
1312 | return -ENOMEM; | |
d025f1e4 ZJS |
1313 | |
1314 | if (startswith(word, "systemd.journald.forward_to_syslog=")) { | |
1315 | r = parse_boolean(word + 35); | |
1316 | if (r < 0) | |
1317 | log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35); | |
1318 | else | |
1319 | s->forward_to_syslog = r; | |
1320 | } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) { | |
1321 | r = parse_boolean(word + 33); | |
1322 | if (r < 0) | |
1323 | log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33); | |
1324 | else | |
1325 | s->forward_to_kmsg = r; | |
1326 | } else if (startswith(word, "systemd.journald.forward_to_console=")) { | |
1327 | r = parse_boolean(word + 36); | |
1328 | if (r < 0) | |
1329 | log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36); | |
1330 | else | |
1331 | s->forward_to_console = r; | |
40b71e89 ST |
1332 | } else if (startswith(word, "systemd.journald.forward_to_wall=")) { |
1333 | r = parse_boolean(word + 33); | |
1334 | if (r < 0) | |
1335 | log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33); | |
1336 | else | |
1337 | s->forward_to_wall = r; | |
d025f1e4 ZJS |
1338 | } else if (startswith(word, "systemd.journald")) |
1339 | log_warning("Invalid systemd.journald parameter. Ignoring."); | |
d025f1e4 | 1340 | } |
b2fadec6 | 1341 | /* do not warn about state here, since probably systemd already did */ |
d025f1e4 | 1342 | |
db91ea32 | 1343 | return 0; |
d025f1e4 ZJS |
1344 | } |
1345 | ||
1346 | static int server_parse_config_file(Server *s) { | |
d025f1e4 ZJS |
1347 | assert(s); |
1348 | ||
a9edaeff JT |
1349 | return config_parse_many("/etc/systemd/journald.conf", |
1350 | CONF_DIRS_NULSTR("systemd/journald.conf"), | |
1351 | "Journal\0", | |
1352 | config_item_perf_lookup, journald_gperf_lookup, | |
1353 | false, s); | |
d025f1e4 ZJS |
1354 | } |
1355 | ||
f9a810be LP |
1356 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1357 | Server *s = userdata; | |
26687bf8 OS |
1358 | |
1359 | assert(s); | |
1360 | ||
f9a810be | 1361 | server_sync(s); |
26687bf8 OS |
1362 | return 0; |
1363 | } | |
1364 | ||
d07f7b9e | 1365 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1366 | int r; |
1367 | ||
26687bf8 OS |
1368 | assert(s); |
1369 | ||
d07f7b9e LP |
1370 | if (priority <= LOG_CRIT) { |
1371 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1372 | server_sync(s); | |
1373 | return 0; | |
1374 | } | |
1375 | ||
26687bf8 OS |
1376 | if (s->sync_scheduled) |
1377 | return 0; | |
1378 | ||
f9a810be LP |
1379 | if (s->sync_interval_usec > 0) { |
1380 | usec_t when; | |
ca267016 | 1381 | |
6a0f1f6d | 1382 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1383 | if (r < 0) |
1384 | return r; | |
26687bf8 | 1385 | |
f9a810be LP |
1386 | when += s->sync_interval_usec; |
1387 | ||
1388 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1389 | r = sd_event_add_time( |
1390 | s->event, | |
1391 | &s->sync_event_source, | |
1392 | CLOCK_MONOTONIC, | |
1393 | when, 0, | |
1394 | server_dispatch_sync, s); | |
f9a810be LP |
1395 | if (r < 0) |
1396 | return r; | |
1397 | ||
1398 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1399 | } else { | |
1400 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1401 | if (r < 0) | |
1402 | return r; | |
1403 | ||
1404 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1405 | } | |
26687bf8 | 1406 | if (r < 0) |
f9a810be | 1407 | return r; |
26687bf8 | 1408 | |
f9a810be LP |
1409 | s->sync_scheduled = true; |
1410 | } | |
26687bf8 OS |
1411 | |
1412 | return 0; | |
1413 | } | |
1414 | ||
0c24bb23 LP |
1415 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1416 | Server *s = userdata; | |
1417 | ||
1418 | assert(s); | |
1419 | ||
1420 | server_cache_hostname(s); | |
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | static int server_open_hostname(Server *s) { | |
1425 | int r; | |
1426 | ||
1427 | assert(s); | |
1428 | ||
1429 | s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY); | |
4a62c710 MS |
1430 | if (s->hostname_fd < 0) |
1431 | return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m"); | |
0c24bb23 | 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 | ||
23bbb0de | 1444 | return log_error_errno(r, "Failed to register hostname fd in event loop: %m"); |
0c24bb23 LP |
1445 | } |
1446 | ||
1447 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
23bbb0de MS |
1448 | if (r < 0) |
1449 | return log_error_errno(r, "Failed to adjust priority of host name event source: %m"); | |
0c24bb23 LP |
1450 | |
1451 | return 0; | |
1452 | } | |
1453 | ||
d025f1e4 | 1454 | int server_init(Server *s) { |
13790add | 1455 | _cleanup_fdset_free_ FDSet *fds = NULL; |
d025f1e4 ZJS |
1456 | int n, r, fd; |
1457 | ||
1458 | assert(s); | |
1459 | ||
1460 | zero(*s); | |
875c2e22 | 1461 | s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->audit_fd = s->hostname_fd = -1; |
d025f1e4 ZJS |
1462 | s->compress = true; |
1463 | s->seal = true; | |
1464 | ||
26687bf8 OS |
1465 | s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC; |
1466 | s->sync_scheduled = false; | |
1467 | ||
d025f1e4 ZJS |
1468 | s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL; |
1469 | s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST; | |
1470 | ||
40b71e89 | 1471 | s->forward_to_wall = true; |
d025f1e4 | 1472 | |
e150e820 MB |
1473 | s->max_file_usec = DEFAULT_MAX_FILE_USEC; |
1474 | ||
d025f1e4 ZJS |
1475 | s->max_level_store = LOG_DEBUG; |
1476 | s->max_level_syslog = LOG_DEBUG; | |
1477 | s->max_level_kmsg = LOG_NOTICE; | |
1478 | s->max_level_console = LOG_INFO; | |
40b71e89 | 1479 | s->max_level_wall = LOG_EMERG; |
d025f1e4 ZJS |
1480 | |
1481 | memset(&s->system_metrics, 0xFF, sizeof(s->system_metrics)); | |
1482 | memset(&s->runtime_metrics, 0xFF, sizeof(s->runtime_metrics)); | |
1483 | ||
1484 | server_parse_config_file(s); | |
1485 | server_parse_proc_cmdline(s); | |
d288f79f | 1486 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
b1389b0d ZJS |
1487 | log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", |
1488 | s->rate_limit_interval, s->rate_limit_burst); | |
d288f79f ZJS |
1489 | s->rate_limit_interval = s->rate_limit_burst = 0; |
1490 | } | |
d025f1e4 ZJS |
1491 | |
1492 | mkdir_p("/run/systemd/journal", 0755); | |
1493 | ||
43cf8388 | 1494 | s->user_journals = ordered_hashmap_new(NULL); |
d025f1e4 ZJS |
1495 | if (!s->user_journals) |
1496 | return log_oom(); | |
1497 | ||
1498 | s->mmap = mmap_cache_new(); | |
1499 | if (!s->mmap) | |
1500 | return log_oom(); | |
1501 | ||
f9a810be | 1502 | r = sd_event_default(&s->event); |
23bbb0de MS |
1503 | if (r < 0) |
1504 | return log_error_errno(r, "Failed to create event loop: %m"); | |
d025f1e4 | 1505 | |
f9a810be LP |
1506 | sd_event_set_watchdog(s->event, true); |
1507 | ||
d025f1e4 | 1508 | n = sd_listen_fds(true); |
23bbb0de MS |
1509 | if (n < 0) |
1510 | return log_error_errno(n, "Failed to read listening file descriptors from environment: %m"); | |
d025f1e4 ZJS |
1511 | |
1512 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
1513 | ||
1514 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
1515 | ||
1516 | if (s->native_fd >= 0) { | |
1517 | log_error("Too many native sockets passed."); | |
1518 | return -EINVAL; | |
1519 | } | |
1520 | ||
1521 | s->native_fd = fd; | |
1522 | ||
1523 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
1524 | ||
1525 | if (s->stdout_fd >= 0) { | |
1526 | log_error("Too many stdout sockets passed."); | |
1527 | return -EINVAL; | |
1528 | } | |
1529 | ||
1530 | s->stdout_fd = fd; | |
1531 | ||
03ee5c38 LP |
1532 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 || |
1533 | sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) { | |
d025f1e4 ZJS |
1534 | |
1535 | if (s->syslog_fd >= 0) { | |
1536 | log_error("Too many /dev/log sockets passed."); | |
1537 | return -EINVAL; | |
1538 | } | |
1539 | ||
1540 | s->syslog_fd = fd; | |
1541 | ||
875c2e22 LP |
1542 | } else if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
1543 | ||
1544 | if (s->audit_fd >= 0) { | |
1545 | log_error("Too many audit sockets passed."); | |
1546 | return -EINVAL; | |
1547 | } | |
1548 | ||
1549 | s->audit_fd = fd; | |
1550 | ||
4ec3cd73 | 1551 | } else { |
4ec3cd73 | 1552 | |
13790add LP |
1553 | if (!fds) { |
1554 | fds = fdset_new(); | |
1555 | if (!fds) | |
1556 | return log_oom(); | |
1557 | } | |
4ec3cd73 | 1558 | |
13790add LP |
1559 | r = fdset_put(fds, fd); |
1560 | if (r < 0) | |
1561 | return log_oom(); | |
4ec3cd73 | 1562 | } |
d025f1e4 ZJS |
1563 | } |
1564 | ||
13790add | 1565 | r = server_open_stdout_socket(s, fds); |
d025f1e4 ZJS |
1566 | if (r < 0) |
1567 | return r; | |
1568 | ||
13790add LP |
1569 | if (fdset_size(fds) > 0) { |
1570 | log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds)); | |
1571 | fds = fdset_free(fds); | |
1572 | } | |
1573 | ||
1574 | r = server_open_syslog_socket(s); | |
d025f1e4 ZJS |
1575 | if (r < 0) |
1576 | return r; | |
1577 | ||
13790add | 1578 | r = server_open_native_socket(s); |
d025f1e4 ZJS |
1579 | if (r < 0) |
1580 | return r; | |
1581 | ||
1582 | r = server_open_dev_kmsg(s); | |
1583 | if (r < 0) | |
1584 | return r; | |
1585 | ||
875c2e22 LP |
1586 | r = server_open_audit(s); |
1587 | if (r < 0) | |
1588 | return r; | |
1589 | ||
d025f1e4 ZJS |
1590 | r = server_open_kernel_seqnum(s); |
1591 | if (r < 0) | |
1592 | return r; | |
1593 | ||
0c24bb23 LP |
1594 | r = server_open_hostname(s); |
1595 | if (r < 0) | |
1596 | return r; | |
1597 | ||
f9a810be | 1598 | r = setup_signals(s); |
d025f1e4 ZJS |
1599 | if (r < 0) |
1600 | return r; | |
1601 | ||
1602 | s->udev = udev_new(); | |
1603 | if (!s->udev) | |
1604 | return -ENOMEM; | |
1605 | ||
f9a810be | 1606 | s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst); |
d025f1e4 ZJS |
1607 | if (!s->rate_limit) |
1608 | return -ENOMEM; | |
1609 | ||
e9174f29 LP |
1610 | r = cg_get_root_path(&s->cgroup_root); |
1611 | if (r < 0) | |
1612 | return r; | |
1613 | ||
0c24bb23 LP |
1614 | server_cache_hostname(s); |
1615 | server_cache_boot_id(s); | |
1616 | server_cache_machine_id(s); | |
1617 | ||
caa2f4c0 | 1618 | r = system_journal_open(s, false); |
d025f1e4 ZJS |
1619 | if (r < 0) |
1620 | return r; | |
1621 | ||
1622 | return 0; | |
1623 | } | |
1624 | ||
1625 | void server_maybe_append_tags(Server *s) { | |
1626 | #ifdef HAVE_GCRYPT | |
1627 | JournalFile *f; | |
1628 | Iterator i; | |
1629 | usec_t n; | |
1630 | ||
1631 | n = now(CLOCK_REALTIME); | |
1632 | ||
1633 | if (s->system_journal) | |
1634 | journal_file_maybe_append_tag(s->system_journal, n); | |
1635 | ||
43cf8388 | 1636 | ORDERED_HASHMAP_FOREACH(f, s->user_journals, i) |
d025f1e4 ZJS |
1637 | journal_file_maybe_append_tag(f, n); |
1638 | #endif | |
1639 | } | |
1640 | ||
1641 | void server_done(Server *s) { | |
1642 | JournalFile *f; | |
1643 | assert(s); | |
1644 | ||
1645 | while (s->stdout_streams) | |
1646 | stdout_stream_free(s->stdout_streams); | |
1647 | ||
1648 | if (s->system_journal) | |
1649 | journal_file_close(s->system_journal); | |
1650 | ||
1651 | if (s->runtime_journal) | |
1652 | journal_file_close(s->runtime_journal); | |
1653 | ||
43cf8388 | 1654 | while ((f = ordered_hashmap_steal_first(s->user_journals))) |
d025f1e4 ZJS |
1655 | journal_file_close(f); |
1656 | ||
43cf8388 | 1657 | ordered_hashmap_free(s->user_journals); |
d025f1e4 | 1658 | |
f9a810be LP |
1659 | sd_event_source_unref(s->syslog_event_source); |
1660 | sd_event_source_unref(s->native_event_source); | |
1661 | sd_event_source_unref(s->stdout_event_source); | |
1662 | sd_event_source_unref(s->dev_kmsg_event_source); | |
875c2e22 | 1663 | sd_event_source_unref(s->audit_event_source); |
f9a810be LP |
1664 | sd_event_source_unref(s->sync_event_source); |
1665 | sd_event_source_unref(s->sigusr1_event_source); | |
1666 | sd_event_source_unref(s->sigusr2_event_source); | |
1667 | sd_event_source_unref(s->sigterm_event_source); | |
1668 | sd_event_source_unref(s->sigint_event_source); | |
0c24bb23 | 1669 | sd_event_source_unref(s->hostname_event_source); |
f9a810be | 1670 | sd_event_unref(s->event); |
d025f1e4 | 1671 | |
03e334a1 LP |
1672 | safe_close(s->syslog_fd); |
1673 | safe_close(s->native_fd); | |
1674 | safe_close(s->stdout_fd); | |
1675 | safe_close(s->dev_kmsg_fd); | |
875c2e22 | 1676 | safe_close(s->audit_fd); |
03e334a1 | 1677 | safe_close(s->hostname_fd); |
0c24bb23 | 1678 | |
d025f1e4 ZJS |
1679 | if (s->rate_limit) |
1680 | journal_rate_limit_free(s->rate_limit); | |
1681 | ||
1682 | if (s->kernel_seqnum) | |
1683 | munmap(s->kernel_seqnum, sizeof(uint64_t)); | |
1684 | ||
1685 | free(s->buffer); | |
1686 | free(s->tty_path); | |
e9174f29 | 1687 | free(s->cgroup_root); |
99d0966e | 1688 | free(s->hostname_field); |
d025f1e4 ZJS |
1689 | |
1690 | if (s->mmap) | |
1691 | mmap_cache_unref(s->mmap); | |
1692 | ||
1693 | if (s->udev) | |
1694 | udev_unref(s->udev); | |
1695 | } |