]>
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> | |
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" | |
875c2e22 | 53 | #include "journald-audit.h" |
74df0fca | 54 | #include "journald-server.h" |
d025f1e4 ZJS |
55 | |
56 | #ifdef HAVE_ACL | |
57 | #include <sys/acl.h> | |
58 | #include <acl/libacl.h> | |
59 | #include "acl-util.h" | |
60 | #endif | |
61 | ||
62 | #ifdef HAVE_SELINUX | |
63 | #include <selinux/selinux.h> | |
64 | #endif | |
65 | ||
66 | #define USER_JOURNALS_MAX 1024 | |
67 | ||
26687bf8 | 68 | #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE) |
7f1ad696 LP |
69 | #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC) |
70 | #define DEFAULT_RATE_LIMIT_BURST 1000 | |
e150e820 | 71 | #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH |
d025f1e4 ZJS |
72 | |
73 | #define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC) | |
74 | ||
2c5859af | 75 | static const char* const storage_table[_STORAGE_MAX] = { |
d025f1e4 ZJS |
76 | [STORAGE_AUTO] = "auto", |
77 | [STORAGE_VOLATILE] = "volatile", | |
78 | [STORAGE_PERSISTENT] = "persistent", | |
79 | [STORAGE_NONE] = "none" | |
80 | }; | |
81 | ||
82 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
83 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
84 | ||
2c5859af DM |
85 | static const char* const split_mode_table[_SPLIT_MAX] = { |
86 | [SPLIT_LOGIN] = "login", | |
d025f1e4 | 87 | [SPLIT_UID] = "uid", |
2c5859af | 88 | [SPLIT_NONE] = "none", |
d025f1e4 ZJS |
89 | }; |
90 | ||
91 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
92 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); | |
93 | ||
670b110c | 94 | static uint64_t available_space(Server *s, bool verbose) { |
db91ea32 | 95 | char ids[33]; |
7fd1b19b | 96 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
97 | sd_id128_t machine; |
98 | struct statvfs ss; | |
670b110c | 99 | uint64_t sum = 0, ss_avail = 0, avail = 0; |
d025f1e4 | 100 | int r; |
7fd1b19b | 101 | _cleanup_closedir_ DIR *d = NULL; |
d025f1e4 | 102 | usec_t ts; |
670b110c | 103 | const char *f; |
d025f1e4 ZJS |
104 | JournalMetrics *m; |
105 | ||
106 | ts = now(CLOCK_MONOTONIC); | |
107 | ||
670b110c ZJS |
108 | if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts |
109 | && !verbose) | |
d025f1e4 ZJS |
110 | return s->cached_available_space; |
111 | ||
112 | r = sd_id128_get_machine(&machine); | |
113 | if (r < 0) | |
114 | return 0; | |
115 | ||
116 | if (s->system_journal) { | |
117 | f = "/var/log/journal/"; | |
118 | m = &s->system_metrics; | |
119 | } else { | |
120 | f = "/run/log/journal/"; | |
121 | m = &s->runtime_metrics; | |
122 | } | |
123 | ||
124 | assert(m); | |
125 | ||
126 | p = strappend(f, sd_id128_to_string(machine, ids)); | |
127 | if (!p) | |
128 | return 0; | |
129 | ||
130 | d = opendir(p); | |
d025f1e4 ZJS |
131 | if (!d) |
132 | return 0; | |
133 | ||
134 | if (fstatvfs(dirfd(d), &ss) < 0) | |
db91ea32 | 135 | return 0; |
d025f1e4 ZJS |
136 | |
137 | for (;;) { | |
138 | struct stat st; | |
139 | struct dirent *de; | |
d025f1e4 | 140 | |
0371ca0d FW |
141 | errno = 0; |
142 | de = readdir(d); | |
143 | if (!de && errno != 0) | |
144 | return 0; | |
d025f1e4 ZJS |
145 | |
146 | if (!de) | |
147 | break; | |
148 | ||
149 | if (!endswith(de->d_name, ".journal") && | |
150 | !endswith(de->d_name, ".journal~")) | |
151 | continue; | |
152 | ||
153 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) | |
154 | continue; | |
155 | ||
156 | if (!S_ISREG(st.st_mode)) | |
157 | continue; | |
158 | ||
159 | sum += (uint64_t) st.st_blocks * 512UL; | |
160 | } | |
161 | ||
d025f1e4 ZJS |
162 | ss_avail = ss.f_bsize * ss.f_bavail; |
163 | ||
348ced90 ZJS |
164 | /* If we reached a high mark, we will always allow this much |
165 | * again, unless usage goes above max_use. This watermark | |
166 | * value is cached so that we don't give up space on pressure, | |
167 | * but hover below the maximum usage. */ | |
168 | ||
169 | if (m->use < sum) | |
170 | m->use = sum; | |
171 | ||
172 | avail = LESS_BY(ss_avail, m->keep_free); | |
173 | ||
174 | s->cached_available_space = LESS_BY(MIN(m->max_use, avail), sum); | |
d025f1e4 ZJS |
175 | s->cached_available_space_timestamp = ts; |
176 | ||
670b110c ZJS |
177 | if (verbose) { |
178 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
179 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX]; | |
180 | ||
181 | server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE, | |
348ced90 ZJS |
182 | "%s journal is using %s (max allowed %s, " |
183 | "trying to leave %s free of %s available → current limit %s).", | |
670b110c ZJS |
184 | s->system_journal ? "Permanent" : "Runtime", |
185 | format_bytes(fb1, sizeof(fb1), sum), | |
186 | format_bytes(fb2, sizeof(fb2), m->max_use), | |
187 | format_bytes(fb3, sizeof(fb3), m->keep_free), | |
188 | format_bytes(fb4, sizeof(fb4), ss_avail), | |
348ced90 | 189 | format_bytes(fb5, sizeof(fb5), s->cached_available_space + sum)); |
670b110c ZJS |
190 | } |
191 | ||
192 | return s->cached_available_space; | |
d025f1e4 ZJS |
193 | } |
194 | ||
d025f1e4 ZJS |
195 | void server_fix_perms(Server *s, JournalFile *f, uid_t uid) { |
196 | int r; | |
197 | #ifdef HAVE_ACL | |
198 | acl_t acl; | |
199 | acl_entry_t entry; | |
200 | acl_permset_t permset; | |
201 | #endif | |
202 | ||
203 | assert(f); | |
204 | ||
4608af43 | 205 | r = fchmod(f->fd, 0640); |
d025f1e4 | 206 | if (r < 0) |
da927ba9 | 207 | log_warning_errno(r, "Failed to fix access mode on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
208 | |
209 | #ifdef HAVE_ACL | |
34c10968 | 210 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
211 | return; |
212 | ||
213 | acl = acl_get_fd(f->fd); | |
214 | if (!acl) { | |
56f64d95 | 215 | log_warning_errno(errno, "Failed to read ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
216 | return; |
217 | } | |
218 | ||
219 | r = acl_find_uid(acl, uid, &entry); | |
220 | if (r <= 0) { | |
221 | ||
222 | if (acl_create_entry(&acl, &entry) < 0 || | |
223 | acl_set_tag_type(entry, ACL_USER) < 0 || | |
224 | acl_set_qualifier(entry, &uid) < 0) { | |
56f64d95 | 225 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
226 | goto finish; |
227 | } | |
228 | } | |
229 | ||
23ad4dd8 JAS |
230 | /* We do not recalculate the mask unconditionally here, |
231 | * so that the fchmod() mask above stays intact. */ | |
d025f1e4 | 232 | if (acl_get_permset(entry, &permset) < 0 || |
23ad4dd8 JAS |
233 | acl_add_perm(permset, ACL_READ) < 0 || |
234 | calc_acl_mask_if_needed(&acl) < 0) { | |
56f64d95 | 235 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
236 | goto finish; |
237 | } | |
238 | ||
239 | if (acl_set_fd(f->fd, acl) < 0) | |
56f64d95 | 240 | log_warning_errno(errno, "Failed to set ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
241 | |
242 | finish: | |
243 | acl_free(acl); | |
244 | #endif | |
245 | } | |
246 | ||
247 | static JournalFile* find_journal(Server *s, uid_t uid) { | |
ed375beb | 248 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
249 | int r; |
250 | JournalFile *f; | |
251 | sd_id128_t machine; | |
252 | ||
253 | assert(s); | |
254 | ||
255 | /* We split up user logs only on /var, not on /run. If the | |
256 | * runtime file is open, we write to it exclusively, in order | |
257 | * to guarantee proper order as soon as we flush /run to | |
258 | * /var and close the runtime file. */ | |
259 | ||
260 | if (s->runtime_journal) | |
261 | return s->runtime_journal; | |
262 | ||
f7dc3ab9 | 263 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
264 | return s->system_journal; |
265 | ||
266 | r = sd_id128_get_machine(&machine); | |
267 | if (r < 0) | |
268 | return s->system_journal; | |
269 | ||
43cf8388 | 270 | f = ordered_hashmap_get(s->user_journals, UINT32_TO_PTR(uid)); |
d025f1e4 ZJS |
271 | if (f) |
272 | return f; | |
273 | ||
de0671ee ZJS |
274 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
275 | SD_ID128_FORMAT_VAL(machine), uid) < 0) | |
d025f1e4 ZJS |
276 | return s->system_journal; |
277 | ||
43cf8388 | 278 | while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { |
d025f1e4 | 279 | /* Too many open? Then let's close one */ |
43cf8388 | 280 | f = ordered_hashmap_steal_first(s->user_journals); |
d025f1e4 ZJS |
281 | assert(f); |
282 | journal_file_close(f); | |
283 | } | |
284 | ||
cbd67177 | 285 | r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f); |
d025f1e4 ZJS |
286 | if (r < 0) |
287 | return s->system_journal; | |
288 | ||
289 | server_fix_perms(s, f, uid); | |
290 | ||
43cf8388 | 291 | r = ordered_hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f); |
d025f1e4 ZJS |
292 | if (r < 0) { |
293 | journal_file_close(f); | |
294 | return s->system_journal; | |
295 | } | |
296 | ||
297 | return f; | |
298 | } | |
299 | ||
fc55baee ZJS |
300 | static int do_rotate(Server *s, JournalFile **f, const char* name, |
301 | bool seal, uint32_t uid) { | |
302 | int r; | |
303 | assert(s); | |
304 | ||
305 | if (!*f) | |
306 | return -EINVAL; | |
307 | ||
308 | r = journal_file_rotate(f, s->compress, seal); | |
309 | if (r < 0) | |
310 | if (*f) | |
c33b3297 MS |
311 | log_error_errno(r, "Failed to rotate %s: %m", |
312 | (*f)->path); | |
fc55baee | 313 | else |
c33b3297 MS |
314 | log_error_errno(r, "Failed to create new %s journal: %m", |
315 | name); | |
fc55baee ZJS |
316 | else |
317 | server_fix_perms(s, *f, uid); | |
318 | return r; | |
319 | } | |
320 | ||
d025f1e4 ZJS |
321 | void server_rotate(Server *s) { |
322 | JournalFile *f; | |
323 | void *k; | |
324 | Iterator i; | |
325 | int r; | |
326 | ||
327 | log_debug("Rotating..."); | |
328 | ||
fc55baee ZJS |
329 | do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
330 | do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 | 331 | |
43cf8388 | 332 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
fc55baee ZJS |
333 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k)); |
334 | if (r >= 0) | |
43cf8388 | 335 | ordered_hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
336 | else if (!f) |
337 | /* Old file has been closed and deallocated */ | |
43cf8388 | 338 | ordered_hashmap_remove(s->user_journals, k); |
d025f1e4 ZJS |
339 | } |
340 | } | |
341 | ||
26687bf8 OS |
342 | void server_sync(Server *s) { |
343 | JournalFile *f; | |
344 | void *k; | |
345 | Iterator i; | |
346 | int r; | |
347 | ||
26687bf8 OS |
348 | if (s->system_journal) { |
349 | r = journal_file_set_offline(s->system_journal); | |
350 | if (r < 0) | |
da927ba9 | 351 | log_error_errno(r, "Failed to sync system journal: %m"); |
26687bf8 OS |
352 | } |
353 | ||
43cf8388 | 354 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
26687bf8 OS |
355 | r = journal_file_set_offline(f); |
356 | if (r < 0) | |
da927ba9 | 357 | log_error_errno(r, "Failed to sync user journal: %m"); |
26687bf8 OS |
358 | } |
359 | ||
f9a810be LP |
360 | if (s->sync_event_source) { |
361 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
362 | if (r < 0) | |
da927ba9 | 363 | log_error_errno(r, "Failed to disable sync timer source: %m"); |
f9a810be | 364 | } |
26687bf8 OS |
365 | |
366 | s->sync_scheduled = false; | |
367 | } | |
368 | ||
63c8666b ZJS |
369 | static void do_vacuum(Server *s, char *ids, JournalFile *f, const char* path, |
370 | JournalMetrics *metrics) { | |
371 | char *p; | |
372 | int r; | |
373 | ||
374 | if (!f) | |
375 | return; | |
376 | ||
377 | p = strappenda(path, ids); | |
dbd2a83f | 378 | r = journal_directory_vacuum(p, metrics->max_use, s->max_retention_usec, &s->oldest_file_usec, false); |
63c8666b | 379 | if (r < 0 && r != -ENOENT) |
da927ba9 | 380 | log_error_errno(r, "Failed to vacuum %s: %m", p); |
63c8666b ZJS |
381 | } |
382 | ||
d025f1e4 | 383 | void server_vacuum(Server *s) { |
d025f1e4 ZJS |
384 | char ids[33]; |
385 | sd_id128_t machine; | |
386 | int r; | |
387 | ||
388 | log_debug("Vacuuming..."); | |
389 | ||
390 | s->oldest_file_usec = 0; | |
391 | ||
392 | r = sd_id128_get_machine(&machine); | |
393 | if (r < 0) { | |
da927ba9 | 394 | log_error_errno(r, "Failed to get machine ID: %m"); |
d025f1e4 ZJS |
395 | return; |
396 | } | |
d025f1e4 ZJS |
397 | sd_id128_to_string(machine, ids); |
398 | ||
63c8666b ZJS |
399 | do_vacuum(s, ids, s->system_journal, "/var/log/journal/", &s->system_metrics); |
400 | do_vacuum(s, ids, s->runtime_journal, "/run/log/journal/", &s->runtime_metrics); | |
d025f1e4 ZJS |
401 | |
402 | s->cached_available_space_timestamp = 0; | |
403 | } | |
404 | ||
0c24bb23 LP |
405 | static void server_cache_machine_id(Server *s) { |
406 | sd_id128_t id; | |
407 | int r; | |
408 | ||
409 | assert(s); | |
410 | ||
411 | r = sd_id128_get_machine(&id); | |
412 | if (r < 0) | |
413 | return; | |
414 | ||
415 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
416 | } | |
417 | ||
418 | static void server_cache_boot_id(Server *s) { | |
419 | sd_id128_t id; | |
420 | int r; | |
421 | ||
422 | assert(s); | |
423 | ||
424 | r = sd_id128_get_boot(&id); | |
425 | if (r < 0) | |
426 | return; | |
427 | ||
428 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
429 | } | |
430 | ||
431 | static void server_cache_hostname(Server *s) { | |
432 | _cleanup_free_ char *t = NULL; | |
433 | char *x; | |
434 | ||
435 | assert(s); | |
436 | ||
437 | t = gethostname_malloc(); | |
438 | if (!t) | |
439 | return; | |
440 | ||
441 | x = strappend("_HOSTNAME=", t); | |
442 | if (!x) | |
443 | return; | |
444 | ||
445 | free(s->hostname_field); | |
446 | s->hostname_field = x; | |
447 | } | |
448 | ||
8531ae70 | 449 | static bool shall_try_append_again(JournalFile *f, int r) { |
d025f1e4 ZJS |
450 | |
451 | /* -E2BIG Hit configured limit | |
452 | -EFBIG Hit fs limit | |
453 | -EDQUOT Quota limit hit | |
454 | -ENOSPC Disk full | |
fa6ac760 | 455 | -EIO I/O error of some kind (mmap) |
d025f1e4 ZJS |
456 | -EHOSTDOWN Other machine |
457 | -EBUSY Unclean shutdown | |
458 | -EPROTONOSUPPORT Unsupported feature | |
459 | -EBADMSG Corrupted | |
460 | -ENODATA Truncated | |
461 | -ESHUTDOWN Already archived */ | |
462 | ||
463 | if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC) | |
464 | log_debug("%s: Allocation limit reached, rotating.", f->path); | |
465 | else if (r == -EHOSTDOWN) | |
466 | log_info("%s: Journal file from other machine, rotating.", f->path); | |
467 | else if (r == -EBUSY) | |
468 | log_info("%s: Unclean shutdown, rotating.", f->path); | |
469 | else if (r == -EPROTONOSUPPORT) | |
470 | log_info("%s: Unsupported feature, rotating.", f->path); | |
471 | else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN) | |
472 | log_warning("%s: Journal file corrupted, rotating.", f->path); | |
fa6ac760 LP |
473 | else if (r == -EIO) |
474 | log_warning("%s: IO error, rotating.", f->path); | |
d025f1e4 ZJS |
475 | else |
476 | return false; | |
477 | ||
478 | return true; | |
479 | } | |
480 | ||
d07f7b9e | 481 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) { |
d025f1e4 ZJS |
482 | JournalFile *f; |
483 | bool vacuumed = false; | |
484 | int r; | |
485 | ||
486 | assert(s); | |
487 | assert(iovec); | |
488 | assert(n > 0); | |
489 | ||
490 | f = find_journal(s, uid); | |
491 | if (!f) | |
492 | return; | |
493 | ||
494 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
495 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
496 | server_rotate(s); | |
497 | server_vacuum(s); | |
498 | vacuumed = true; | |
499 | ||
500 | f = find_journal(s, uid); | |
501 | if (!f) | |
502 | return; | |
503 | } | |
504 | ||
505 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
26687bf8 | 506 | if (r >= 0) { |
d07f7b9e | 507 | server_schedule_sync(s, priority); |
d025f1e4 | 508 | return; |
26687bf8 | 509 | } |
d025f1e4 ZJS |
510 | |
511 | if (vacuumed || !shall_try_append_again(f, r)) { | |
e40ec7ae ZJS |
512 | size_t size = 0; |
513 | unsigned i; | |
514 | for (i = 0; i < n; i++) | |
515 | size += iovec[i].iov_len; | |
516 | ||
da927ba9 | 517 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, size); |
d025f1e4 ZJS |
518 | return; |
519 | } | |
520 | ||
521 | server_rotate(s); | |
522 | server_vacuum(s); | |
523 | ||
524 | f = find_journal(s, uid); | |
525 | if (!f) | |
526 | return; | |
527 | ||
528 | log_debug("Retrying write."); | |
529 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
e40ec7ae ZJS |
530 | if (r < 0) { |
531 | size_t size = 0; | |
532 | unsigned i; | |
533 | for (i = 0; i < n; i++) | |
534 | size += iovec[i].iov_len; | |
535 | ||
da927ba9 | 536 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, size); |
d07f7b9e LP |
537 | } else |
538 | server_schedule_sync(s, priority); | |
d025f1e4 ZJS |
539 | } |
540 | ||
541 | static void dispatch_message_real( | |
542 | Server *s, | |
543 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
544 | const struct ucred *ucred, |
545 | const struct timeval *tv, | |
d025f1e4 | 546 | const char *label, size_t label_len, |
968f3196 | 547 | const char *unit_id, |
d07f7b9e | 548 | int priority, |
968f3196 | 549 | pid_t object_pid) { |
d025f1e4 | 550 | |
968f3196 | 551 | char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)], |
ae018d9b LP |
552 | uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)], |
553 | gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)], | |
554 | owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)], | |
d3789917 | 555 | source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)], |
968f3196 ZJS |
556 | o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)], |
557 | o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)], | |
558 | o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)]; | |
559 | uid_t object_uid; | |
560 | gid_t object_gid; | |
968f3196 | 561 | char *x; |
d025f1e4 | 562 | int r; |
ae018d9b | 563 | char *t, *c; |
82499507 LP |
564 | uid_t realuid = 0, owner = 0, journal_uid; |
565 | bool owner_valid = false; | |
ae018d9b | 566 | #ifdef HAVE_AUDIT |
968f3196 ZJS |
567 | char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], |
568 | audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)], | |
569 | o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], | |
570 | o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)]; | |
ae018d9b LP |
571 | |
572 | uint32_t audit; | |
573 | uid_t loginuid; | |
574 | #endif | |
d025f1e4 ZJS |
575 | |
576 | assert(s); | |
577 | assert(iovec); | |
578 | assert(n > 0); | |
968f3196 | 579 | assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m); |
d025f1e4 ZJS |
580 | |
581 | if (ucred) { | |
d025f1e4 ZJS |
582 | realuid = ucred->uid; |
583 | ||
de0671ee | 584 | sprintf(pid, "_PID="PID_FMT, ucred->pid); |
c2457105 | 585 | IOVEC_SET_STRING(iovec[n++], pid); |
d025f1e4 | 586 | |
de0671ee | 587 | sprintf(uid, "_UID="UID_FMT, ucred->uid); |
c2457105 | 588 | IOVEC_SET_STRING(iovec[n++], uid); |
d025f1e4 | 589 | |
de0671ee | 590 | sprintf(gid, "_GID="GID_FMT, ucred->gid); |
c2457105 | 591 | IOVEC_SET_STRING(iovec[n++], gid); |
d025f1e4 ZJS |
592 | |
593 | r = get_process_comm(ucred->pid, &t); | |
594 | if (r >= 0) { | |
968f3196 | 595 | x = strappenda("_COMM=", t); |
d025f1e4 | 596 | free(t); |
968f3196 | 597 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
598 | } |
599 | ||
600 | r = get_process_exe(ucred->pid, &t); | |
601 | if (r >= 0) { | |
968f3196 | 602 | x = strappenda("_EXE=", t); |
d025f1e4 | 603 | free(t); |
968f3196 | 604 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
605 | } |
606 | ||
9bdbc2e2 | 607 | r = get_process_cmdline(ucred->pid, 0, false, &t); |
d025f1e4 | 608 | if (r >= 0) { |
968f3196 | 609 | x = strappenda("_CMDLINE=", t); |
d025f1e4 | 610 | free(t); |
3a832116 SL |
611 | IOVEC_SET_STRING(iovec[n++], x); |
612 | } | |
613 | ||
614 | r = get_process_capeff(ucred->pid, &t); | |
615 | if (r >= 0) { | |
616 | x = strappenda("_CAP_EFFECTIVE=", t); | |
617 | free(t); | |
968f3196 | 618 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
619 | } |
620 | ||
0a20e3c1 | 621 | #ifdef HAVE_AUDIT |
d025f1e4 | 622 | r = audit_session_from_pid(ucred->pid, &audit); |
ae018d9b | 623 | if (r >= 0) { |
de0671ee | 624 | sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit); |
ae018d9b LP |
625 | IOVEC_SET_STRING(iovec[n++], audit_session); |
626 | } | |
d025f1e4 ZJS |
627 | |
628 | r = audit_loginuid_from_pid(ucred->pid, &loginuid); | |
7027ff61 | 629 | if (r >= 0) { |
de0671ee | 630 | sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid); |
ae018d9b | 631 | IOVEC_SET_STRING(iovec[n++], audit_loginuid); |
d025f1e4 | 632 | } |
ae018d9b | 633 | #endif |
d025f1e4 | 634 | |
e9174f29 | 635 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c); |
7027ff61 | 636 | if (r >= 0) { |
968f3196 ZJS |
637 | char *session = NULL; |
638 | ||
639 | x = strappenda("_SYSTEMD_CGROUP=", c); | |
640 | IOVEC_SET_STRING(iovec[n++], x); | |
d025f1e4 | 641 | |
ae018d9b LP |
642 | r = cg_path_get_session(c, &t); |
643 | if (r >= 0) { | |
644 | session = strappenda("_SYSTEMD_SESSION=", t); | |
645 | free(t); | |
d025f1e4 | 646 | IOVEC_SET_STRING(iovec[n++], session); |
ae018d9b LP |
647 | } |
648 | ||
649 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
650 | owner_valid = true; | |
d025f1e4 | 651 | |
de0671ee | 652 | sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner); |
d025f1e4 | 653 | IOVEC_SET_STRING(iovec[n++], owner_uid); |
ae018d9b | 654 | } |
d025f1e4 | 655 | |
ae018d9b | 656 | if (cg_path_get_unit(c, &t) >= 0) { |
968f3196 | 657 | x = strappenda("_SYSTEMD_UNIT=", t); |
ae018d9b | 658 | free(t); |
19cace37 LP |
659 | IOVEC_SET_STRING(iovec[n++], x); |
660 | } else if (unit_id && !session) { | |
661 | x = strappenda("_SYSTEMD_UNIT=", unit_id); | |
662 | IOVEC_SET_STRING(iovec[n++], x); | |
663 | } | |
664 | ||
665 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
968f3196 | 666 | x = strappenda("_SYSTEMD_USER_UNIT=", t); |
ae018d9b | 667 | free(t); |
968f3196 | 668 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 LP |
669 | } else if (unit_id && session) { |
670 | x = strappenda("_SYSTEMD_USER_UNIT=", unit_id); | |
671 | IOVEC_SET_STRING(iovec[n++], x); | |
672 | } | |
ae018d9b | 673 | |
0a244b8e LP |
674 | if (cg_path_get_slice(c, &t) >= 0) { |
675 | x = strappenda("_SYSTEMD_SLICE=", t); | |
676 | free(t); | |
677 | IOVEC_SET_STRING(iovec[n++], x); | |
678 | } | |
679 | ||
ae018d9b | 680 | free(c); |
2d43b190 DM |
681 | } else if (unit_id) { |
682 | x = strappenda("_SYSTEMD_UNIT=", unit_id); | |
683 | IOVEC_SET_STRING(iovec[n++], x); | |
ef1673d1 | 684 | } |
d025f1e4 | 685 | |
d025f1e4 | 686 | #ifdef HAVE_SELINUX |
6baa7db0 | 687 | if (mac_selinux_use()) { |
d682b3a7 | 688 | if (label) { |
f8294e41 | 689 | x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1); |
ae018d9b | 690 | |
d682b3a7 LP |
691 | *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0; |
692 | IOVEC_SET_STRING(iovec[n++], x); | |
693 | } else { | |
694 | security_context_t con; | |
d025f1e4 | 695 | |
d682b3a7 LP |
696 | if (getpidcon(ucred->pid, &con) >= 0) { |
697 | x = strappenda("_SELINUX_CONTEXT=", con); | |
e7ff4e7f | 698 | |
d682b3a7 LP |
699 | freecon(con); |
700 | IOVEC_SET_STRING(iovec[n++], x); | |
701 | } | |
d025f1e4 ZJS |
702 | } |
703 | } | |
704 | #endif | |
705 | } | |
968f3196 ZJS |
706 | assert(n <= m); |
707 | ||
708 | if (object_pid) { | |
709 | r = get_process_uid(object_pid, &object_uid); | |
710 | if (r >= 0) { | |
de0671ee | 711 | sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid); |
968f3196 ZJS |
712 | IOVEC_SET_STRING(iovec[n++], o_uid); |
713 | } | |
714 | ||
715 | r = get_process_gid(object_pid, &object_gid); | |
716 | if (r >= 0) { | |
de0671ee | 717 | sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid); |
968f3196 ZJS |
718 | IOVEC_SET_STRING(iovec[n++], o_gid); |
719 | } | |
720 | ||
721 | r = get_process_comm(object_pid, &t); | |
722 | if (r >= 0) { | |
723 | x = strappenda("OBJECT_COMM=", t); | |
724 | free(t); | |
725 | IOVEC_SET_STRING(iovec[n++], x); | |
726 | } | |
727 | ||
728 | r = get_process_exe(object_pid, &t); | |
729 | if (r >= 0) { | |
730 | x = strappenda("OBJECT_EXE=", t); | |
731 | free(t); | |
732 | IOVEC_SET_STRING(iovec[n++], x); | |
733 | } | |
734 | ||
735 | r = get_process_cmdline(object_pid, 0, false, &t); | |
736 | if (r >= 0) { | |
737 | x = strappenda("OBJECT_CMDLINE=", t); | |
738 | free(t); | |
739 | IOVEC_SET_STRING(iovec[n++], x); | |
740 | } | |
741 | ||
742 | #ifdef HAVE_AUDIT | |
743 | r = audit_session_from_pid(object_pid, &audit); | |
744 | if (r >= 0) { | |
de0671ee | 745 | sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit); |
968f3196 ZJS |
746 | IOVEC_SET_STRING(iovec[n++], o_audit_session); |
747 | } | |
748 | ||
749 | r = audit_loginuid_from_pid(object_pid, &loginuid); | |
750 | if (r >= 0) { | |
de0671ee | 751 | sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid); |
968f3196 ZJS |
752 | IOVEC_SET_STRING(iovec[n++], o_audit_loginuid); |
753 | } | |
754 | #endif | |
755 | ||
e9174f29 | 756 | r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c); |
968f3196 ZJS |
757 | if (r >= 0) { |
758 | x = strappenda("OBJECT_SYSTEMD_CGROUP=", c); | |
759 | IOVEC_SET_STRING(iovec[n++], x); | |
760 | ||
761 | r = cg_path_get_session(c, &t); | |
762 | if (r >= 0) { | |
763 | x = strappenda("OBJECT_SYSTEMD_SESSION=", t); | |
764 | free(t); | |
765 | IOVEC_SET_STRING(iovec[n++], x); | |
766 | } | |
767 | ||
768 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
de0671ee | 769 | sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner); |
968f3196 ZJS |
770 | IOVEC_SET_STRING(iovec[n++], o_owner_uid); |
771 | } | |
772 | ||
773 | if (cg_path_get_unit(c, &t) >= 0) { | |
774 | x = strappenda("OBJECT_SYSTEMD_UNIT=", t); | |
775 | free(t); | |
19cace37 LP |
776 | IOVEC_SET_STRING(iovec[n++], x); |
777 | } | |
778 | ||
779 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
968f3196 ZJS |
780 | x = strappenda("OBJECT_SYSTEMD_USER_UNIT=", t); |
781 | free(t); | |
968f3196 | 782 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 783 | } |
968f3196 ZJS |
784 | |
785 | free(c); | |
786 | } | |
787 | } | |
788 | assert(n <= m); | |
d025f1e4 ZJS |
789 | |
790 | if (tv) { | |
ae018d9b | 791 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv)); |
a5693989 | 792 | IOVEC_SET_STRING(iovec[n++], source_time); |
d025f1e4 ZJS |
793 | } |
794 | ||
795 | /* Note that strictly speaking storing the boot id here is | |
796 | * redundant since the entry includes this in-line | |
797 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 LP |
798 | if (!isempty(s->boot_id_field)) |
799 | IOVEC_SET_STRING(iovec[n++], s->boot_id_field); | |
d025f1e4 | 800 | |
0c24bb23 LP |
801 | if (!isempty(s->machine_id_field)) |
802 | IOVEC_SET_STRING(iovec[n++], s->machine_id_field); | |
d025f1e4 | 803 | |
0c24bb23 LP |
804 | if (!isempty(s->hostname_field)) |
805 | IOVEC_SET_STRING(iovec[n++], s->hostname_field); | |
d025f1e4 ZJS |
806 | |
807 | assert(n <= m); | |
808 | ||
da499392 | 809 | if (s->split_mode == SPLIT_UID && realuid > 0) |
40adcda8 | 810 | /* Split up strictly by any UID */ |
759c945a | 811 | journal_uid = realuid; |
82499507 | 812 | else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0) |
edc3797f LP |
813 | /* Split up by login UIDs. We do this only if the |
814 | * realuid is not root, in order not to accidentally | |
815 | * leak privileged information to the user that is | |
816 | * logged by a privileged process that is part of an | |
7517e174 | 817 | * unprivileged session. */ |
8a0889df | 818 | journal_uid = owner; |
da499392 KS |
819 | else |
820 | journal_uid = 0; | |
759c945a | 821 | |
d07f7b9e | 822 | write_to_journal(s, journal_uid, iovec, n, priority); |
d025f1e4 ZJS |
823 | } |
824 | ||
825 | void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) { | |
826 | char mid[11 + 32 + 1]; | |
827 | char buffer[16 + LINE_MAX + 1]; | |
828 | struct iovec iovec[N_IOVEC_META_FIELDS + 4]; | |
829 | int n = 0; | |
830 | va_list ap; | |
b92bea5d | 831 | struct ucred ucred = {}; |
d025f1e4 ZJS |
832 | |
833 | assert(s); | |
834 | assert(format); | |
835 | ||
836 | IOVEC_SET_STRING(iovec[n++], "PRIORITY=6"); | |
837 | IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver"); | |
838 | ||
839 | memcpy(buffer, "MESSAGE=", 8); | |
840 | va_start(ap, format); | |
841 | vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap); | |
842 | va_end(ap); | |
843 | char_array_0(buffer); | |
844 | IOVEC_SET_STRING(iovec[n++], buffer); | |
845 | ||
846 | if (!sd_id128_equal(message_id, SD_ID128_NULL)) { | |
e2cc6eca | 847 | snprintf(mid, sizeof(mid), LOG_MESSAGE_ID(message_id)); |
d025f1e4 ZJS |
848 | char_array_0(mid); |
849 | IOVEC_SET_STRING(iovec[n++], mid); | |
850 | } | |
851 | ||
d025f1e4 ZJS |
852 | ucred.pid = getpid(); |
853 | ucred.uid = getuid(); | |
854 | ucred.gid = getgid(); | |
855 | ||
d07f7b9e | 856 | dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL, LOG_INFO, 0); |
d025f1e4 ZJS |
857 | } |
858 | ||
859 | void server_dispatch_message( | |
860 | Server *s, | |
861 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
862 | const struct ucred *ucred, |
863 | const struct timeval *tv, | |
d025f1e4 ZJS |
864 | const char *label, size_t label_len, |
865 | const char *unit_id, | |
968f3196 ZJS |
866 | int priority, |
867 | pid_t object_pid) { | |
d025f1e4 | 868 | |
7027ff61 | 869 | int rl, r; |
7fd1b19b | 870 | _cleanup_free_ char *path = NULL; |
db91ea32 | 871 | char *c; |
d025f1e4 ZJS |
872 | |
873 | assert(s); | |
874 | assert(iovec || n == 0); | |
875 | ||
876 | if (n == 0) | |
877 | return; | |
878 | ||
879 | if (LOG_PRI(priority) > s->max_level_store) | |
880 | return; | |
881 | ||
2f5df74a HHPF |
882 | /* Stop early in case the information will not be stored |
883 | * in a journal. */ | |
884 | if (s->storage == STORAGE_NONE) | |
885 | return; | |
886 | ||
d025f1e4 ZJS |
887 | if (!ucred) |
888 | goto finish; | |
889 | ||
e9174f29 | 890 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path); |
7027ff61 | 891 | if (r < 0) |
d025f1e4 ZJS |
892 | goto finish; |
893 | ||
894 | /* example: /user/lennart/3/foobar | |
895 | * /system/dbus.service/foobar | |
896 | * | |
897 | * So let's cut of everything past the third /, since that is | |
898 | * where user directories start */ | |
899 | ||
900 | c = strchr(path, '/'); | |
901 | if (c) { | |
902 | c = strchr(c+1, '/'); | |
903 | if (c) { | |
904 | c = strchr(c+1, '/'); | |
905 | if (c) | |
906 | *c = 0; | |
907 | } | |
908 | } | |
909 | ||
db91ea32 | 910 | rl = journal_rate_limit_test(s->rate_limit, path, |
670b110c | 911 | priority & LOG_PRIMASK, available_space(s, false)); |
d025f1e4 | 912 | |
db91ea32 | 913 | if (rl == 0) |
d025f1e4 | 914 | return; |
d025f1e4 ZJS |
915 | |
916 | /* Write a suppression message if we suppressed something */ | |
917 | if (rl > 1) | |
db91ea32 ZJS |
918 | server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, |
919 | "Suppressed %u messages from %s", rl - 1, path); | |
d025f1e4 ZJS |
920 | |
921 | finish: | |
d07f7b9e | 922 | dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id, priority, object_pid); |
d025f1e4 ZJS |
923 | } |
924 | ||
925 | ||
caa2f4c0 | 926 | static int system_journal_open(Server *s, bool flush_requested) { |
d025f1e4 ZJS |
927 | int r; |
928 | char *fn; | |
929 | sd_id128_t machine; | |
930 | char ids[33]; | |
931 | ||
932 | r = sd_id128_get_machine(&machine); | |
23bbb0de MS |
933 | if (r < 0) |
934 | return log_error_errno(r, "Failed to get machine id: %m"); | |
d025f1e4 ZJS |
935 | |
936 | sd_id128_to_string(machine, ids); | |
937 | ||
938 | if (!s->system_journal && | |
939 | (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) && | |
caa2f4c0 ZJS |
940 | (flush_requested |
941 | || access("/run/systemd/journal/flushed", F_OK) >= 0)) { | |
d025f1e4 ZJS |
942 | |
943 | /* If in auto mode: first try to create the machine | |
944 | * path, but not the prefix. | |
945 | * | |
946 | * If in persistent mode: create /var/log/journal and | |
947 | * the machine path */ | |
948 | ||
949 | if (s->storage == STORAGE_PERSISTENT) | |
950 | (void) mkdir("/var/log/journal/", 0755); | |
951 | ||
e40ec7ae | 952 | fn = strappenda("/var/log/journal/", ids); |
d025f1e4 | 953 | (void) mkdir(fn, 0755); |
d025f1e4 | 954 | |
e40ec7ae | 955 | fn = strappenda(fn, "/system.journal"); |
d025f1e4 | 956 | 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 | 957 | |
670b110c | 958 | if (r >= 0) |
d025f1e4 | 959 | server_fix_perms(s, s->system_journal, 0); |
433dd100 LN |
960 | else if (r < 0) { |
961 | if (r != -ENOENT && r != -EROFS) | |
da927ba9 | 962 | log_warning_errno(r, "Failed to open system journal: %m"); |
e40ec7ae | 963 | |
433dd100 LN |
964 | r = 0; |
965 | } | |
d025f1e4 ZJS |
966 | } |
967 | ||
968 | if (!s->runtime_journal && | |
969 | (s->storage != STORAGE_NONE)) { | |
970 | ||
971 | fn = strjoin("/run/log/journal/", ids, "/system.journal", NULL); | |
972 | if (!fn) | |
973 | return -ENOMEM; | |
974 | ||
975 | if (s->system_journal) { | |
976 | ||
977 | /* Try to open the runtime journal, but only | |
978 | * if it already exists, so that we can flush | |
979 | * it into the system journal */ | |
980 | ||
981 | r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); | |
982 | free(fn); | |
983 | ||
984 | if (r < 0) { | |
985 | if (r != -ENOENT) | |
da927ba9 | 986 | log_warning_errno(r, "Failed to open runtime journal: %m"); |
d025f1e4 ZJS |
987 | |
988 | r = 0; | |
989 | } | |
990 | ||
991 | } else { | |
992 | ||
993 | /* OK, we really need the runtime journal, so create | |
994 | * it if necessary. */ | |
995 | ||
fc1d70af LP |
996 | (void) mkdir("/run/log", 0755); |
997 | (void) mkdir("/run/log/journal", 0755); | |
998 | (void) mkdir_parents(fn, 0750); | |
999 | ||
d025f1e4 ZJS |
1000 | r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); |
1001 | free(fn); | |
1002 | ||
23bbb0de MS |
1003 | if (r < 0) |
1004 | return log_error_errno(r, "Failed to open runtime journal: %m"); | |
d025f1e4 ZJS |
1005 | } |
1006 | ||
670b110c | 1007 | if (s->runtime_journal) |
d025f1e4 | 1008 | server_fix_perms(s, s->runtime_journal, 0); |
d025f1e4 ZJS |
1009 | } |
1010 | ||
670b110c ZJS |
1011 | available_space(s, true); |
1012 | ||
d025f1e4 ZJS |
1013 | return r; |
1014 | } | |
1015 | ||
1016 | int server_flush_to_var(Server *s) { | |
d025f1e4 ZJS |
1017 | sd_id128_t machine; |
1018 | sd_journal *j = NULL; | |
fbb63411 LP |
1019 | char ts[FORMAT_TIMESPAN_MAX]; |
1020 | usec_t start; | |
1021 | unsigned n = 0; | |
1022 | int r; | |
d025f1e4 ZJS |
1023 | |
1024 | assert(s); | |
1025 | ||
1026 | if (s->storage != STORAGE_AUTO && | |
1027 | s->storage != STORAGE_PERSISTENT) | |
1028 | return 0; | |
1029 | ||
1030 | if (!s->runtime_journal) | |
1031 | return 0; | |
1032 | ||
caa2f4c0 | 1033 | system_journal_open(s, true); |
d025f1e4 ZJS |
1034 | |
1035 | if (!s->system_journal) | |
1036 | return 0; | |
1037 | ||
1038 | log_debug("Flushing to /var..."); | |
1039 | ||
fbb63411 LP |
1040 | start = now(CLOCK_MONOTONIC); |
1041 | ||
d025f1e4 | 1042 | r = sd_id128_get_machine(&machine); |
00a16861 | 1043 | if (r < 0) |
d025f1e4 | 1044 | return r; |
d025f1e4 ZJS |
1045 | |
1046 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
23bbb0de MS |
1047 | if (r < 0) |
1048 | return log_error_errno(r, "Failed to read runtime journal: %m"); | |
d025f1e4 | 1049 | |
93b73b06 LP |
1050 | sd_journal_set_data_threshold(j, 0); |
1051 | ||
d025f1e4 ZJS |
1052 | SD_JOURNAL_FOREACH(j) { |
1053 | Object *o = NULL; | |
1054 | JournalFile *f; | |
1055 | ||
1056 | f = j->current_file; | |
1057 | assert(f && f->current_offset > 0); | |
1058 | ||
fbb63411 LP |
1059 | n++; |
1060 | ||
d025f1e4 ZJS |
1061 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1062 | if (r < 0) { | |
da927ba9 | 1063 | log_error_errno(r, "Can't read entry: %m"); |
d025f1e4 ZJS |
1064 | goto finish; |
1065 | } | |
1066 | ||
1067 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1068 | if (r >= 0) | |
1069 | continue; | |
1070 | ||
1071 | if (!shall_try_append_again(s->system_journal, r)) { | |
da927ba9 | 1072 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1073 | goto finish; |
1074 | } | |
1075 | ||
1076 | server_rotate(s); | |
1077 | server_vacuum(s); | |
1078 | ||
253f59df LP |
1079 | if (!s->system_journal) { |
1080 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1081 | r = -EIO; | |
1082 | goto finish; | |
1083 | } | |
1084 | ||
d025f1e4 ZJS |
1085 | log_debug("Retrying write."); |
1086 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1087 | if (r < 0) { | |
da927ba9 | 1088 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1089 | goto finish; |
1090 | } | |
1091 | } | |
1092 | ||
1093 | finish: | |
1094 | journal_file_post_change(s->system_journal); | |
1095 | ||
1096 | journal_file_close(s->runtime_journal); | |
1097 | s->runtime_journal = NULL; | |
1098 | ||
1099 | if (r >= 0) | |
1100 | rm_rf("/run/log/journal", false, true, false); | |
1101 | ||
763c7aa2 | 1102 | sd_journal_close(j); |
d025f1e4 | 1103 | |
fbb63411 LP |
1104 | 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); |
1105 | ||
d025f1e4 ZJS |
1106 | return r; |
1107 | } | |
1108 | ||
8531ae70 | 1109 | int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
f9a810be LP |
1110 | Server *s = userdata; |
1111 | ||
d025f1e4 | 1112 | assert(s); |
875c2e22 | 1113 | assert(fd == s->native_fd || fd == s->syslog_fd || fd == s->audit_fd); |
f9a810be LP |
1114 | |
1115 | if (revents != EPOLLIN) { | |
1116 | log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents); | |
1117 | return -EIO; | |
1118 | } | |
1119 | ||
1120 | for (;;) { | |
1121 | struct ucred *ucred = NULL; | |
1122 | struct timeval *tv = NULL; | |
1123 | struct cmsghdr *cmsg; | |
1124 | char *label = NULL; | |
1125 | size_t label_len = 0; | |
1126 | struct iovec iovec; | |
1127 | ||
1128 | union { | |
1129 | struct cmsghdr cmsghdr; | |
1130 | ||
bdd13f6b ZJS |
1131 | /* We use NAME_MAX space for the SELinux label |
1132 | * here. The kernel currently enforces no | |
1133 | * limit, but according to suggestions from | |
1134 | * the SELinux people this will change and it | |
1135 | * will probably be identical to NAME_MAX. For | |
1136 | * now we use that, but this should be updated | |
7517e174 | 1137 | * one day when the final limit is known. */ |
f9a810be LP |
1138 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + |
1139 | CMSG_SPACE(sizeof(struct timeval)) + | |
1140 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1141 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1142 | } control = {}; | |
875c2e22 | 1143 | union sockaddr_union sa = {}; |
f9a810be LP |
1144 | struct msghdr msghdr = { |
1145 | .msg_iov = &iovec, | |
1146 | .msg_iovlen = 1, | |
1147 | .msg_control = &control, | |
1148 | .msg_controllen = sizeof(control), | |
875c2e22 LP |
1149 | .msg_name = &sa, |
1150 | .msg_namelen = sizeof(sa), | |
f9a810be | 1151 | }; |
d025f1e4 | 1152 | |
d025f1e4 | 1153 | ssize_t n; |
f9a810be LP |
1154 | int *fds = NULL; |
1155 | unsigned n_fds = 0; | |
875c2e22 LP |
1156 | int v = 0; |
1157 | size_t m; | |
d025f1e4 | 1158 | |
875c2e22 LP |
1159 | /* Try to get the right size, if we can. (Not all |
1160 | * sockets support SIOCINQ, hence we just try, but | |
1161 | * don't rely on it. */ | |
1162 | (void) ioctl(fd, SIOCINQ, &v); | |
1163 | ||
7517e174 | 1164 | /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */ |
875c2e22 LP |
1165 | m = PAGE_ALIGN(MAX3((size_t) v + 1, |
1166 | (size_t) LINE_MAX, | |
1167 | ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1); | |
d025f1e4 | 1168 | |
875c2e22 | 1169 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m)) |
f9a810be | 1170 | return log_oom(); |
d025f1e4 | 1171 | |
f9a810be | 1172 | iovec.iov_base = s->buffer; |
875c2e22 | 1173 | iovec.iov_len = s->buffer_size - 1; /* Leave room for trailing NUL we add later */ |
d025f1e4 | 1174 | |
f9a810be LP |
1175 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1176 | if (n < 0) { | |
d025f1e4 | 1177 | if (errno == EINTR || errno == EAGAIN) |
f9a810be | 1178 | return 0; |
d025f1e4 | 1179 | |
56f64d95 | 1180 | log_error_errno(errno, "recvmsg() failed: %m"); |
d025f1e4 ZJS |
1181 | return -errno; |
1182 | } | |
1183 | ||
f9a810be LP |
1184 | for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) { |
1185 | ||
1186 | if (cmsg->cmsg_level == SOL_SOCKET && | |
1187 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1188 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) | |
1189 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1190 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1191 | cmsg->cmsg_type == SCM_SECURITY) { | |
1192 | label = (char*) CMSG_DATA(cmsg); | |
1193 | label_len = cmsg->cmsg_len - CMSG_LEN(0); | |
1194 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1195 | cmsg->cmsg_type == SO_TIMESTAMP && | |
1196 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval))) | |
1197 | tv = (struct timeval*) CMSG_DATA(cmsg); | |
1198 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1199 | cmsg->cmsg_type == SCM_RIGHTS) { | |
1200 | fds = (int*) CMSG_DATA(cmsg); | |
1201 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
1202 | } | |
d025f1e4 ZJS |
1203 | } |
1204 | ||
875c2e22 LP |
1205 | /* And a trailing NUL, just in case */ |
1206 | s->buffer[n] = 0; | |
1207 | ||
f9a810be | 1208 | if (fd == s->syslog_fd) { |
875c2e22 | 1209 | if (n > 0 && n_fds == 0) |
f9a810be | 1210 | server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len); |
875c2e22 | 1211 | else if (n_fds > 0) |
f9a810be | 1212 | log_warning("Got file descriptors via syslog socket. Ignoring."); |
d025f1e4 | 1213 | |
875c2e22 | 1214 | } else if (fd == s->native_fd) { |
f9a810be LP |
1215 | if (n > 0 && n_fds == 0) |
1216 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1217 | else if (n == 0 && n_fds == 1) | |
1218 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1219 | else if (n_fds > 0) | |
1220 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
875c2e22 LP |
1221 | |
1222 | } else { | |
1223 | assert(fd == s->audit_fd); | |
1224 | ||
1225 | if (n > 0 && n_fds == 0) | |
0b97208d | 1226 | server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen); |
875c2e22 LP |
1227 | else if (n_fds > 0) |
1228 | log_warning("Got file descriptors via audit socket. Ignoring."); | |
d025f1e4 ZJS |
1229 | } |
1230 | ||
f9a810be LP |
1231 | close_many(fds, n_fds); |
1232 | } | |
f9a810be | 1233 | } |
d025f1e4 | 1234 | |
f9a810be LP |
1235 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1236 | Server *s = userdata; | |
d025f1e4 | 1237 | |
f9a810be | 1238 | assert(s); |
d025f1e4 | 1239 | |
f9a810be | 1240 | log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid); |
d025f1e4 | 1241 | |
f9a810be LP |
1242 | server_flush_to_var(s); |
1243 | server_sync(s); | |
3bfd4e0c | 1244 | server_vacuum(s); |
d025f1e4 | 1245 | |
74055aa7 LP |
1246 | touch("/run/systemd/journal/flushed"); |
1247 | ||
f9a810be LP |
1248 | return 0; |
1249 | } | |
d025f1e4 | 1250 | |
f9a810be LP |
1251 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1252 | Server *s = userdata; | |
d025f1e4 | 1253 | |
f9a810be | 1254 | assert(s); |
d025f1e4 | 1255 | |
f9a810be LP |
1256 | log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid); |
1257 | server_rotate(s); | |
1258 | server_vacuum(s); | |
d025f1e4 | 1259 | |
f9a810be LP |
1260 | return 0; |
1261 | } | |
d025f1e4 | 1262 | |
f9a810be LP |
1263 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1264 | Server *s = userdata; | |
d025f1e4 | 1265 | |
f9a810be | 1266 | assert(s); |
d025f1e4 | 1267 | |
4daf54a8 | 1268 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1269 | |
6203e07a | 1270 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1271 | return 0; |
1272 | } | |
1273 | ||
f9a810be | 1274 | static int setup_signals(Server *s) { |
d025f1e4 | 1275 | sigset_t mask; |
f9a810be | 1276 | int r; |
d025f1e4 ZJS |
1277 | |
1278 | assert(s); | |
1279 | ||
1280 | assert_se(sigemptyset(&mask) == 0); | |
1281 | sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1); | |
1282 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); | |
1283 | ||
151b9b96 | 1284 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1285 | if (r < 0) |
1286 | return r; | |
1287 | ||
151b9b96 | 1288 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1289 | if (r < 0) |
1290 | return r; | |
d025f1e4 | 1291 | |
151b9b96 | 1292 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1293 | if (r < 0) |
1294 | return r; | |
d025f1e4 | 1295 | |
151b9b96 | 1296 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1297 | if (r < 0) |
1298 | return r; | |
d025f1e4 ZJS |
1299 | |
1300 | return 0; | |
1301 | } | |
1302 | ||
1303 | static int server_parse_proc_cmdline(Server *s) { | |
7fd1b19b | 1304 | _cleanup_free_ char *line = NULL; |
a2a5291b | 1305 | const char *w, *state; |
d025f1e4 | 1306 | size_t l; |
74df0fca | 1307 | int r; |
d025f1e4 | 1308 | |
74df0fca | 1309 | r = proc_cmdline(&line); |
b5884878 | 1310 | if (r < 0) { |
da927ba9 | 1311 | log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m"); |
d025f1e4 | 1312 | return 0; |
b5884878 | 1313 | } |
d025f1e4 ZJS |
1314 | |
1315 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
7fd1b19b | 1316 | _cleanup_free_ char *word; |
d025f1e4 ZJS |
1317 | |
1318 | word = strndup(w, l); | |
db91ea32 ZJS |
1319 | if (!word) |
1320 | return -ENOMEM; | |
d025f1e4 ZJS |
1321 | |
1322 | if (startswith(word, "systemd.journald.forward_to_syslog=")) { | |
1323 | r = parse_boolean(word + 35); | |
1324 | if (r < 0) | |
1325 | log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35); | |
1326 | else | |
1327 | s->forward_to_syslog = r; | |
1328 | } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) { | |
1329 | r = parse_boolean(word + 33); | |
1330 | if (r < 0) | |
1331 | log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33); | |
1332 | else | |
1333 | s->forward_to_kmsg = r; | |
1334 | } else if (startswith(word, "systemd.journald.forward_to_console=")) { | |
1335 | r = parse_boolean(word + 36); | |
1336 | if (r < 0) | |
1337 | log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36); | |
1338 | else | |
1339 | s->forward_to_console = r; | |
40b71e89 ST |
1340 | } else if (startswith(word, "systemd.journald.forward_to_wall=")) { |
1341 | r = parse_boolean(word + 33); | |
1342 | if (r < 0) | |
1343 | log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33); | |
1344 | else | |
1345 | s->forward_to_wall = r; | |
d025f1e4 ZJS |
1346 | } else if (startswith(word, "systemd.journald")) |
1347 | log_warning("Invalid systemd.journald parameter. Ignoring."); | |
d025f1e4 | 1348 | } |
b2fadec6 | 1349 | /* do not warn about state here, since probably systemd already did */ |
d025f1e4 | 1350 | |
db91ea32 | 1351 | return 0; |
d025f1e4 ZJS |
1352 | } |
1353 | ||
1354 | static int server_parse_config_file(Server *s) { | |
d025f1e4 ZJS |
1355 | assert(s); |
1356 | ||
a9edaeff JT |
1357 | return config_parse_many("/etc/systemd/journald.conf", |
1358 | CONF_DIRS_NULSTR("systemd/journald.conf"), | |
1359 | "Journal\0", | |
1360 | config_item_perf_lookup, journald_gperf_lookup, | |
1361 | false, s); | |
d025f1e4 ZJS |
1362 | } |
1363 | ||
f9a810be LP |
1364 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1365 | Server *s = userdata; | |
26687bf8 OS |
1366 | |
1367 | assert(s); | |
1368 | ||
f9a810be | 1369 | server_sync(s); |
26687bf8 OS |
1370 | return 0; |
1371 | } | |
1372 | ||
d07f7b9e | 1373 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1374 | int r; |
1375 | ||
26687bf8 OS |
1376 | assert(s); |
1377 | ||
d07f7b9e LP |
1378 | if (priority <= LOG_CRIT) { |
1379 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1380 | server_sync(s); | |
1381 | return 0; | |
1382 | } | |
1383 | ||
26687bf8 OS |
1384 | if (s->sync_scheduled) |
1385 | return 0; | |
1386 | ||
f9a810be LP |
1387 | if (s->sync_interval_usec > 0) { |
1388 | usec_t when; | |
ca267016 | 1389 | |
6a0f1f6d | 1390 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1391 | if (r < 0) |
1392 | return r; | |
26687bf8 | 1393 | |
f9a810be LP |
1394 | when += s->sync_interval_usec; |
1395 | ||
1396 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1397 | r = sd_event_add_time( |
1398 | s->event, | |
1399 | &s->sync_event_source, | |
1400 | CLOCK_MONOTONIC, | |
1401 | when, 0, | |
1402 | server_dispatch_sync, s); | |
f9a810be LP |
1403 | if (r < 0) |
1404 | return r; | |
1405 | ||
1406 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1407 | } else { | |
1408 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1409 | if (r < 0) | |
1410 | return r; | |
1411 | ||
1412 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1413 | } | |
26687bf8 | 1414 | if (r < 0) |
f9a810be | 1415 | return r; |
26687bf8 | 1416 | |
f9a810be LP |
1417 | s->sync_scheduled = true; |
1418 | } | |
26687bf8 OS |
1419 | |
1420 | return 0; | |
1421 | } | |
1422 | ||
0c24bb23 LP |
1423 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1424 | Server *s = userdata; | |
1425 | ||
1426 | assert(s); | |
1427 | ||
1428 | server_cache_hostname(s); | |
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | static int server_open_hostname(Server *s) { | |
1433 | int r; | |
1434 | ||
1435 | assert(s); | |
1436 | ||
1437 | s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY); | |
4a62c710 MS |
1438 | if (s->hostname_fd < 0) |
1439 | return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m"); | |
0c24bb23 | 1440 | |
151b9b96 | 1441 | r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s); |
0c24bb23 | 1442 | if (r < 0) { |
28def94c DR |
1443 | /* kernels prior to 3.2 don't support polling this file. Ignore |
1444 | * the failure. */ | |
1445 | if (r == -EPERM) { | |
1446 | log_warning("Failed to register hostname fd in event loop: %s. Ignoring.", | |
1447 | strerror(-r)); | |
03e334a1 | 1448 | s->hostname_fd = safe_close(s->hostname_fd); |
28def94c DR |
1449 | return 0; |
1450 | } | |
1451 | ||
23bbb0de | 1452 | return log_error_errno(r, "Failed to register hostname fd in event loop: %m"); |
0c24bb23 LP |
1453 | } |
1454 | ||
1455 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
23bbb0de MS |
1456 | if (r < 0) |
1457 | return log_error_errno(r, "Failed to adjust priority of host name event source: %m"); | |
0c24bb23 LP |
1458 | |
1459 | return 0; | |
1460 | } | |
1461 | ||
d025f1e4 ZJS |
1462 | int server_init(Server *s) { |
1463 | int n, r, fd; | |
1464 | ||
1465 | assert(s); | |
1466 | ||
1467 | zero(*s); | |
875c2e22 | 1468 | s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->audit_fd = s->hostname_fd = -1; |
d025f1e4 ZJS |
1469 | s->compress = true; |
1470 | s->seal = true; | |
1471 | ||
26687bf8 OS |
1472 | s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC; |
1473 | s->sync_scheduled = false; | |
1474 | ||
d025f1e4 ZJS |
1475 | s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL; |
1476 | s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST; | |
1477 | ||
40b71e89 | 1478 | s->forward_to_wall = true; |
d025f1e4 | 1479 | |
e150e820 MB |
1480 | s->max_file_usec = DEFAULT_MAX_FILE_USEC; |
1481 | ||
d025f1e4 ZJS |
1482 | s->max_level_store = LOG_DEBUG; |
1483 | s->max_level_syslog = LOG_DEBUG; | |
1484 | s->max_level_kmsg = LOG_NOTICE; | |
1485 | s->max_level_console = LOG_INFO; | |
40b71e89 | 1486 | s->max_level_wall = LOG_EMERG; |
d025f1e4 ZJS |
1487 | |
1488 | memset(&s->system_metrics, 0xFF, sizeof(s->system_metrics)); | |
1489 | memset(&s->runtime_metrics, 0xFF, sizeof(s->runtime_metrics)); | |
1490 | ||
1491 | server_parse_config_file(s); | |
1492 | server_parse_proc_cmdline(s); | |
d288f79f | 1493 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
b1389b0d ZJS |
1494 | log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", |
1495 | s->rate_limit_interval, s->rate_limit_burst); | |
d288f79f ZJS |
1496 | s->rate_limit_interval = s->rate_limit_burst = 0; |
1497 | } | |
d025f1e4 ZJS |
1498 | |
1499 | mkdir_p("/run/systemd/journal", 0755); | |
1500 | ||
43cf8388 | 1501 | s->user_journals = ordered_hashmap_new(NULL); |
d025f1e4 ZJS |
1502 | if (!s->user_journals) |
1503 | return log_oom(); | |
1504 | ||
1505 | s->mmap = mmap_cache_new(); | |
1506 | if (!s->mmap) | |
1507 | return log_oom(); | |
1508 | ||
f9a810be | 1509 | r = sd_event_default(&s->event); |
23bbb0de MS |
1510 | if (r < 0) |
1511 | return log_error_errno(r, "Failed to create event loop: %m"); | |
d025f1e4 | 1512 | |
f9a810be LP |
1513 | sd_event_set_watchdog(s->event, true); |
1514 | ||
d025f1e4 | 1515 | n = sd_listen_fds(true); |
23bbb0de MS |
1516 | if (n < 0) |
1517 | return log_error_errno(n, "Failed to read listening file descriptors from environment: %m"); | |
d025f1e4 ZJS |
1518 | |
1519 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
1520 | ||
1521 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
1522 | ||
1523 | if (s->native_fd >= 0) { | |
1524 | log_error("Too many native sockets passed."); | |
1525 | return -EINVAL; | |
1526 | } | |
1527 | ||
1528 | s->native_fd = fd; | |
1529 | ||
1530 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
1531 | ||
1532 | if (s->stdout_fd >= 0) { | |
1533 | log_error("Too many stdout sockets passed."); | |
1534 | return -EINVAL; | |
1535 | } | |
1536 | ||
1537 | s->stdout_fd = fd; | |
1538 | ||
03ee5c38 LP |
1539 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 || |
1540 | sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) { | |
d025f1e4 ZJS |
1541 | |
1542 | if (s->syslog_fd >= 0) { | |
1543 | log_error("Too many /dev/log sockets passed."); | |
1544 | return -EINVAL; | |
1545 | } | |
1546 | ||
1547 | s->syslog_fd = fd; | |
1548 | ||
875c2e22 LP |
1549 | } else if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
1550 | ||
1551 | if (s->audit_fd >= 0) { | |
1552 | log_error("Too many audit sockets passed."); | |
1553 | return -EINVAL; | |
1554 | } | |
1555 | ||
1556 | s->audit_fd = fd; | |
1557 | ||
4ec3cd73 LP |
1558 | } else { |
1559 | log_warning("Unknown socket passed as file descriptor %d, ignoring.", fd); | |
1560 | ||
1561 | /* Let's close the fd, better be safe than | |
1562 | sorry. The fd might reference some resource | |
1563 | that we really want to release if we don't | |
1564 | make use of it. */ | |
1565 | ||
1566 | safe_close(fd); | |
1567 | } | |
d025f1e4 ZJS |
1568 | } |
1569 | ||
1570 | r = server_open_syslog_socket(s); | |
1571 | if (r < 0) | |
1572 | return r; | |
1573 | ||
1574 | r = server_open_native_socket(s); | |
1575 | if (r < 0) | |
1576 | return r; | |
1577 | ||
1578 | r = server_open_stdout_socket(s); | |
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 | } |