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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
d025f1e4 ZJS |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2011 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
349cc4a5 | 21 | #if HAVE_SELINUX |
24882e06 LP |
22 | #include <selinux/selinux.h> |
23 | #endif | |
8580d1f7 LP |
24 | #include <sys/ioctl.h> |
25 | #include <sys/mman.h> | |
26 | #include <sys/signalfd.h> | |
27 | #include <sys/statvfs.h> | |
07630cea | 28 | #include <linux/sockios.h> |
24882e06 | 29 | |
b4bbcaa9 | 30 | #include "libudev.h" |
8580d1f7 | 31 | #include "sd-daemon.h" |
74df0fca LP |
32 | #include "sd-journal.h" |
33 | #include "sd-messages.h" | |
8580d1f7 LP |
34 | |
35 | #include "acl-util.h" | |
b5efdb8a | 36 | #include "alloc-util.h" |
430f0182 | 37 | #include "audit-util.h" |
d025f1e4 | 38 | #include "cgroup-util.h" |
d025f1e4 | 39 | #include "conf-parser.h" |
a0956174 | 40 | #include "dirent-util.h" |
0dec689b | 41 | #include "extract-word.h" |
3ffd4af2 | 42 | #include "fd-util.h" |
33d52ab9 | 43 | #include "fileio.h" |
f97b34a6 | 44 | #include "format-util.h" |
f4f15635 | 45 | #include "fs-util.h" |
8580d1f7 | 46 | #include "hashmap.h" |
958b66ea | 47 | #include "hostname-util.h" |
4b58153d | 48 | #include "id128-util.h" |
afc5dbf3 | 49 | #include "io-util.h" |
8580d1f7 LP |
50 | #include "journal-authenticate.h" |
51 | #include "journal-file.h" | |
d025f1e4 ZJS |
52 | #include "journal-internal.h" |
53 | #include "journal-vacuum.h" | |
8580d1f7 | 54 | #include "journald-audit.h" |
22e3a02b | 55 | #include "journald-context.h" |
d025f1e4 | 56 | #include "journald-kmsg.h" |
d025f1e4 | 57 | #include "journald-native.h" |
8580d1f7 | 58 | #include "journald-rate-limit.h" |
3ffd4af2 | 59 | #include "journald-server.h" |
8580d1f7 LP |
60 | #include "journald-stream.h" |
61 | #include "journald-syslog.h" | |
4b58153d | 62 | #include "log.h" |
07630cea LP |
63 | #include "missing.h" |
64 | #include "mkdir.h" | |
6bedfcbb | 65 | #include "parse-util.h" |
4e731273 | 66 | #include "proc-cmdline.h" |
07630cea LP |
67 | #include "process-util.h" |
68 | #include "rm-rf.h" | |
69 | #include "selinux-util.h" | |
70 | #include "signal-util.h" | |
71 | #include "socket-util.h" | |
32917e33 | 72 | #include "stdio-util.h" |
8b43440b | 73 | #include "string-table.h" |
07630cea | 74 | #include "string-util.h" |
863a5610 | 75 | #include "syslog-util.h" |
22e3a02b | 76 | #include "user-util.h" |
d025f1e4 | 77 | |
d025f1e4 ZJS |
78 | #define USER_JOURNALS_MAX 1024 |
79 | ||
26687bf8 | 80 | #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE) |
7f1ad696 LP |
81 | #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC) |
82 | #define DEFAULT_RATE_LIMIT_BURST 1000 | |
e150e820 | 83 | #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH |
d025f1e4 | 84 | |
8580d1f7 | 85 | #define RECHECK_SPACE_USEC (30*USEC_PER_SEC) |
d025f1e4 | 86 | |
e22aa3d3 LP |
87 | #define NOTIFY_SNDBUF_SIZE (8*1024*1024) |
88 | ||
7a24f3bf VC |
89 | /* The period to insert between posting changes for coalescing */ |
90 | #define POST_CHANGE_TIMER_INTERVAL_USEC (250*USEC_PER_MSEC) | |
91 | ||
ec20fe5f LP |
92 | /* Pick a good default that is likely to fit into AF_UNIX and AF_INET SOCK_DGRAM datagrams, and even leaves some room |
93 | * for a bit of additional metadata. */ | |
94 | #define DEFAULT_LINE_MAX (48*1024) | |
95 | ||
e0ed6db9 FB |
96 | static int determine_path_usage(Server *s, const char *path, uint64_t *ret_used, uint64_t *ret_free) { |
97 | _cleanup_closedir_ DIR *d = NULL; | |
98 | struct dirent *de; | |
99 | struct statvfs ss; | |
e0ed6db9 FB |
100 | |
101 | assert(ret_used); | |
102 | assert(ret_free); | |
103 | ||
266a4700 | 104 | d = opendir(path); |
e0ed6db9 FB |
105 | if (!d) |
106 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, | |
266a4700 | 107 | errno, "Failed to open %s: %m", path); |
e0ed6db9 FB |
108 | |
109 | if (fstatvfs(dirfd(d), &ss) < 0) | |
266a4700 | 110 | return log_error_errno(errno, "Failed to fstatvfs(%s): %m", path); |
e0ed6db9 FB |
111 | |
112 | *ret_free = ss.f_bsize * ss.f_bavail; | |
113 | *ret_used = 0; | |
114 | FOREACH_DIRENT_ALL(de, d, break) { | |
115 | struct stat st; | |
116 | ||
117 | if (!endswith(de->d_name, ".journal") && | |
118 | !endswith(de->d_name, ".journal~")) | |
119 | continue; | |
120 | ||
121 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) { | |
266a4700 | 122 | log_debug_errno(errno, "Failed to stat %s/%s, ignoring: %m", path, de->d_name); |
e0ed6db9 FB |
123 | continue; |
124 | } | |
125 | ||
126 | if (!S_ISREG(st.st_mode)) | |
127 | continue; | |
128 | ||
129 | *ret_used += (uint64_t) st.st_blocks * 512UL; | |
130 | } | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
a0edc477 FB |
135 | static void cache_space_invalidate(JournalStorageSpace *space) { |
136 | memset(space, 0, sizeof(*space)); | |
137 | } | |
138 | ||
57f443a6 | 139 | static int cache_space_refresh(Server *s, JournalStorage *storage) { |
23aba343 | 140 | JournalStorageSpace *space; |
266a4700 | 141 | JournalMetrics *metrics; |
23aba343 | 142 | uint64_t vfs_used, vfs_avail, avail; |
d025f1e4 | 143 | usec_t ts; |
e0ed6db9 | 144 | int r; |
d025f1e4 | 145 | |
8580d1f7 | 146 | assert(s); |
266a4700 | 147 | |
266a4700 | 148 | metrics = &storage->metrics; |
23aba343 | 149 | space = &storage->space; |
d025f1e4 | 150 | |
8580d1f7 | 151 | ts = now(CLOCK_MONOTONIC); |
d025f1e4 | 152 | |
3099caf2 | 153 | if (space->timestamp != 0 && space->timestamp + RECHECK_SPACE_USEC > ts) |
d025f1e4 ZJS |
154 | return 0; |
155 | ||
23aba343 | 156 | r = determine_path_usage(s, storage->path, &vfs_used, &vfs_avail); |
e0ed6db9 FB |
157 | if (r < 0) |
158 | return r; | |
d025f1e4 | 159 | |
23aba343 FB |
160 | space->vfs_used = vfs_used; |
161 | space->vfs_available = vfs_avail; | |
162 | ||
163 | avail = LESS_BY(vfs_avail, metrics->keep_free); | |
164 | ||
23aba343 FB |
165 | space->limit = MIN(MAX(vfs_used + avail, metrics->min_use), metrics->max_use); |
166 | space->available = LESS_BY(space->limit, vfs_used); | |
167 | space->timestamp = ts; | |
8580d1f7 LP |
168 | return 1; |
169 | } | |
170 | ||
3a19f215 FB |
171 | static void patch_min_use(JournalStorage *storage) { |
172 | assert(storage); | |
173 | ||
174 | /* Let's bump the min_use limit to the current usage on disk. We do | |
175 | * this when starting up and first opening the journal files. This way | |
176 | * sudden spikes in disk usage will not cause journald to vacuum files | |
177 | * without bounds. Note that this means that only a restart of journald | |
178 | * will make it reset this value. */ | |
179 | ||
180 | storage->metrics.min_use = MAX(storage->metrics.min_use, storage->space.vfs_used); | |
181 | } | |
182 | ||
183 | ||
184 | static int determine_space(Server *s, uint64_t *available, uint64_t *limit) { | |
266a4700 | 185 | JournalStorage *js; |
57f443a6 | 186 | int r; |
8580d1f7 LP |
187 | |
188 | assert(s); | |
189 | ||
266a4700 | 190 | js = s->system_journal ? &s->system_storage : &s->runtime_storage; |
57f443a6 FB |
191 | |
192 | r = cache_space_refresh(s, js); | |
193 | if (r >= 0) { | |
194 | if (available) | |
195 | *available = js->space.available; | |
196 | if (limit) | |
197 | *limit = js->space.limit; | |
198 | } | |
199 | return r; | |
d025f1e4 ZJS |
200 | } |
201 | ||
cba5629e FB |
202 | void server_space_usage_message(Server *s, JournalStorage *storage) { |
203 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
204 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX], fb6[FORMAT_BYTES_MAX]; | |
205 | JournalMetrics *metrics; | |
cba5629e FB |
206 | |
207 | assert(s); | |
208 | ||
209 | if (!storage) | |
210 | storage = s->system_journal ? &s->system_storage : &s->runtime_storage; | |
211 | ||
57f443a6 | 212 | if (cache_space_refresh(s, storage) < 0) |
cba5629e FB |
213 | return; |
214 | ||
215 | metrics = &storage->metrics; | |
23aba343 | 216 | format_bytes(fb1, sizeof(fb1), storage->space.vfs_used); |
cba5629e FB |
217 | format_bytes(fb2, sizeof(fb2), metrics->max_use); |
218 | format_bytes(fb3, sizeof(fb3), metrics->keep_free); | |
23aba343 | 219 | format_bytes(fb4, sizeof(fb4), storage->space.vfs_available); |
cba5629e FB |
220 | format_bytes(fb5, sizeof(fb5), storage->space.limit); |
221 | format_bytes(fb6, sizeof(fb6), storage->space.available); | |
222 | ||
13181942 LP |
223 | server_driver_message(s, 0, |
224 | "MESSAGE_ID=" SD_MESSAGE_JOURNAL_USAGE_STR, | |
cba5629e FB |
225 | LOG_MESSAGE("%s (%s) is %s, max %s, %s free.", |
226 | storage->name, storage->path, fb1, fb5, fb6), | |
227 | "JOURNAL_NAME=%s", storage->name, | |
228 | "JOURNAL_PATH=%s", storage->path, | |
23aba343 | 229 | "CURRENT_USE=%"PRIu64, storage->space.vfs_used, |
cba5629e FB |
230 | "CURRENT_USE_PRETTY=%s", fb1, |
231 | "MAX_USE=%"PRIu64, metrics->max_use, | |
232 | "MAX_USE_PRETTY=%s", fb2, | |
233 | "DISK_KEEP_FREE=%"PRIu64, metrics->keep_free, | |
234 | "DISK_KEEP_FREE_PRETTY=%s", fb3, | |
23aba343 | 235 | "DISK_AVAILABLE=%"PRIu64, storage->space.vfs_available, |
cba5629e FB |
236 | "DISK_AVAILABLE_PRETTY=%s", fb4, |
237 | "LIMIT=%"PRIu64, storage->space.limit, | |
238 | "LIMIT_PRETTY=%s", fb5, | |
239 | "AVAILABLE=%"PRIu64, storage->space.available, | |
240 | "AVAILABLE_PRETTY=%s", fb6, | |
241 | NULL); | |
242 | } | |
243 | ||
5c3bde3f | 244 | static void server_add_acls(JournalFile *f, uid_t uid) { |
349cc4a5 | 245 | #if HAVE_ACL |
5c3bde3f | 246 | int r; |
d025f1e4 | 247 | #endif |
d025f1e4 ZJS |
248 | assert(f); |
249 | ||
349cc4a5 | 250 | #if HAVE_ACL |
34c10968 | 251 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
252 | return; |
253 | ||
5c3bde3f ZJS |
254 | r = add_acls_for_user(f->fd, uid); |
255 | if (r < 0) | |
256 | log_warning_errno(r, "Failed to set ACL on %s, ignoring: %m", f->path); | |
d025f1e4 ZJS |
257 | #endif |
258 | } | |
259 | ||
7a24f3bf VC |
260 | static int open_journal( |
261 | Server *s, | |
262 | bool reliably, | |
263 | const char *fname, | |
264 | int flags, | |
265 | bool seal, | |
266 | JournalMetrics *metrics, | |
7a24f3bf VC |
267 | JournalFile **ret) { |
268 | int r; | |
e167d7fd | 269 | JournalFile *f; |
7a24f3bf VC |
270 | |
271 | assert(s); | |
272 | assert(fname); | |
273 | assert(ret); | |
274 | ||
275 | if (reliably) | |
b58c888f | 276 | r = journal_file_open_reliably(fname, flags, 0640, s->compress, seal, metrics, s->mmap, s->deferred_closes, NULL, &f); |
7a24f3bf | 277 | else |
5d1ce257 | 278 | r = journal_file_open(-1, fname, flags, 0640, s->compress, seal, metrics, s->mmap, s->deferred_closes, NULL, &f); |
7a24f3bf VC |
279 | if (r < 0) |
280 | return r; | |
281 | ||
e167d7fd | 282 | r = journal_file_enable_post_change_timer(f, s->event, POST_CHANGE_TIMER_INTERVAL_USEC); |
7a24f3bf | 283 | if (r < 0) { |
69a3a6fd | 284 | (void) journal_file_close(f); |
7a24f3bf VC |
285 | return r; |
286 | } | |
287 | ||
e167d7fd | 288 | *ret = f; |
7a24f3bf VC |
289 | return r; |
290 | } | |
291 | ||
6431c7e2 | 292 | static bool flushed_flag_is_set(void) { |
f78273c8 | 293 | return access("/run/systemd/journal/flushed", F_OK) >= 0; |
6431c7e2 VC |
294 | } |
295 | ||
105bdb46 VC |
296 | static int system_journal_open(Server *s, bool flush_requested) { |
297 | const char *fn; | |
298 | int r = 0; | |
299 | ||
300 | if (!s->system_journal && | |
f78273c8 LP |
301 | IN_SET(s->storage, STORAGE_PERSISTENT, STORAGE_AUTO) && |
302 | (flush_requested || flushed_flag_is_set())) { | |
105bdb46 VC |
303 | |
304 | /* If in auto mode: first try to create the machine | |
305 | * path, but not the prefix. | |
306 | * | |
307 | * If in persistent mode: create /var/log/journal and | |
308 | * the machine path */ | |
309 | ||
310 | if (s->storage == STORAGE_PERSISTENT) | |
311 | (void) mkdir_p("/var/log/journal/", 0755); | |
312 | ||
266a4700 | 313 | (void) mkdir(s->system_storage.path, 0755); |
105bdb46 | 314 | |
266a4700 FB |
315 | fn = strjoina(s->system_storage.path, "/system.journal"); |
316 | r = open_journal(s, true, fn, O_RDWR|O_CREAT, s->seal, &s->system_storage.metrics, &s->system_journal); | |
105bdb46 VC |
317 | if (r >= 0) { |
318 | server_add_acls(s->system_journal, 0); | |
57f443a6 | 319 | (void) cache_space_refresh(s, &s->system_storage); |
3a19f215 | 320 | patch_min_use(&s->system_storage); |
105bdb46 | 321 | } else if (r < 0) { |
4c701096 | 322 | if (!IN_SET(r, -ENOENT, -EROFS)) |
105bdb46 VC |
323 | log_warning_errno(r, "Failed to open system journal: %m"); |
324 | ||
325 | r = 0; | |
326 | } | |
929eeb54 VC |
327 | |
328 | /* If the runtime journal is open, and we're post-flush, we're | |
329 | * recovering from a failed system journal rotate (ENOSPC) | |
330 | * for which the runtime journal was reopened. | |
331 | * | |
332 | * Perform an implicit flush to var, leaving the runtime | |
333 | * journal closed, now that the system journal is back. | |
334 | */ | |
f78273c8 LP |
335 | if (!flush_requested) |
336 | (void) server_flush_to_var(s, true); | |
105bdb46 VC |
337 | } |
338 | ||
339 | if (!s->runtime_journal && | |
340 | (s->storage != STORAGE_NONE)) { | |
341 | ||
266a4700 | 342 | fn = strjoina(s->runtime_storage.path, "/system.journal"); |
105bdb46 VC |
343 | |
344 | if (s->system_journal) { | |
345 | ||
346 | /* Try to open the runtime journal, but only | |
347 | * if it already exists, so that we can flush | |
348 | * it into the system journal */ | |
349 | ||
266a4700 | 350 | r = open_journal(s, false, fn, O_RDWR, false, &s->runtime_storage.metrics, &s->runtime_journal); |
105bdb46 VC |
351 | if (r < 0) { |
352 | if (r != -ENOENT) | |
353 | log_warning_errno(r, "Failed to open runtime journal: %m"); | |
354 | ||
355 | r = 0; | |
356 | } | |
357 | ||
358 | } else { | |
359 | ||
360 | /* OK, we really need the runtime journal, so create | |
361 | * it if necessary. */ | |
362 | ||
363 | (void) mkdir("/run/log", 0755); | |
364 | (void) mkdir("/run/log/journal", 0755); | |
365 | (void) mkdir_parents(fn, 0750); | |
366 | ||
266a4700 | 367 | r = open_journal(s, true, fn, O_RDWR|O_CREAT, false, &s->runtime_storage.metrics, &s->runtime_journal); |
105bdb46 VC |
368 | if (r < 0) |
369 | return log_error_errno(r, "Failed to open runtime journal: %m"); | |
370 | } | |
371 | ||
372 | if (s->runtime_journal) { | |
373 | server_add_acls(s->runtime_journal, 0); | |
57f443a6 | 374 | (void) cache_space_refresh(s, &s->runtime_storage); |
3a19f215 | 375 | patch_min_use(&s->runtime_storage); |
105bdb46 VC |
376 | } |
377 | } | |
378 | ||
379 | return r; | |
380 | } | |
381 | ||
d025f1e4 | 382 | static JournalFile* find_journal(Server *s, uid_t uid) { |
ed375beb | 383 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
384 | int r; |
385 | JournalFile *f; | |
386 | sd_id128_t machine; | |
387 | ||
388 | assert(s); | |
389 | ||
105bdb46 VC |
390 | /* A rotate that fails to create the new journal (ENOSPC) leaves the |
391 | * rotated journal as NULL. Unless we revisit opening, even after | |
392 | * space is made available we'll continue to return NULL indefinitely. | |
393 | * | |
394 | * system_journal_open() is a noop if the journals are already open, so | |
395 | * we can just call it here to recover from failed rotates (or anything | |
396 | * else that's left the journals as NULL). | |
397 | * | |
398 | * Fixes https://github.com/systemd/systemd/issues/3968 */ | |
399 | (void) system_journal_open(s, false); | |
400 | ||
d025f1e4 ZJS |
401 | /* We split up user logs only on /var, not on /run. If the |
402 | * runtime file is open, we write to it exclusively, in order | |
403 | * to guarantee proper order as soon as we flush /run to | |
404 | * /var and close the runtime file. */ | |
405 | ||
406 | if (s->runtime_journal) | |
407 | return s->runtime_journal; | |
408 | ||
61755fda | 409 | if (uid <= SYSTEM_UID_MAX || uid_is_dynamic(uid)) |
d025f1e4 ZJS |
410 | return s->system_journal; |
411 | ||
412 | r = sd_id128_get_machine(&machine); | |
413 | if (r < 0) | |
414 | return s->system_journal; | |
415 | ||
4a0b58c4 | 416 | f = ordered_hashmap_get(s->user_journals, UID_TO_PTR(uid)); |
d025f1e4 ZJS |
417 | if (f) |
418 | return f; | |
419 | ||
de0671ee ZJS |
420 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
421 | SD_ID128_FORMAT_VAL(machine), uid) < 0) | |
d025f1e4 ZJS |
422 | return s->system_journal; |
423 | ||
43cf8388 | 424 | while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { |
d025f1e4 | 425 | /* Too many open? Then let's close one */ |
43cf8388 | 426 | f = ordered_hashmap_steal_first(s->user_journals); |
d025f1e4 | 427 | assert(f); |
69a3a6fd | 428 | (void) journal_file_close(f); |
d025f1e4 ZJS |
429 | } |
430 | ||
266a4700 | 431 | r = open_journal(s, true, p, O_RDWR|O_CREAT, s->seal, &s->system_storage.metrics, &f); |
d025f1e4 ZJS |
432 | if (r < 0) |
433 | return s->system_journal; | |
434 | ||
5c3bde3f | 435 | server_add_acls(f, uid); |
d025f1e4 | 436 | |
4a0b58c4 | 437 | r = ordered_hashmap_put(s->user_journals, UID_TO_PTR(uid), f); |
d025f1e4 | 438 | if (r < 0) { |
69a3a6fd | 439 | (void) journal_file_close(f); |
d025f1e4 ZJS |
440 | return s->system_journal; |
441 | } | |
442 | ||
443 | return f; | |
444 | } | |
445 | ||
ea69bd41 LP |
446 | static int do_rotate( |
447 | Server *s, | |
448 | JournalFile **f, | |
449 | const char* name, | |
450 | bool seal, | |
451 | uint32_t uid) { | |
452 | ||
fc55baee ZJS |
453 | int r; |
454 | assert(s); | |
455 | ||
456 | if (!*f) | |
457 | return -EINVAL; | |
458 | ||
b58c888f | 459 | r = journal_file_rotate(f, s->compress, seal, s->deferred_closes); |
fc55baee ZJS |
460 | if (r < 0) |
461 | if (*f) | |
ea69bd41 | 462 | log_error_errno(r, "Failed to rotate %s: %m", (*f)->path); |
fc55baee | 463 | else |
ea69bd41 | 464 | log_error_errno(r, "Failed to create new %s journal: %m", name); |
fc55baee | 465 | else |
5c3bde3f | 466 | server_add_acls(*f, uid); |
2678031a | 467 | |
fc55baee ZJS |
468 | return r; |
469 | } | |
470 | ||
d025f1e4 ZJS |
471 | void server_rotate(Server *s) { |
472 | JournalFile *f; | |
473 | void *k; | |
474 | Iterator i; | |
475 | int r; | |
476 | ||
477 | log_debug("Rotating..."); | |
478 | ||
8580d1f7 LP |
479 | (void) do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
480 | (void) do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 | 481 | |
43cf8388 | 482 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
4a0b58c4 | 483 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UID(k)); |
fc55baee | 484 | if (r >= 0) |
43cf8388 | 485 | ordered_hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
486 | else if (!f) |
487 | /* Old file has been closed and deallocated */ | |
43cf8388 | 488 | ordered_hashmap_remove(s->user_journals, k); |
d025f1e4 | 489 | } |
b58c888f VC |
490 | |
491 | /* Perform any deferred closes which aren't still offlining. */ | |
492 | SET_FOREACH(f, s->deferred_closes, i) | |
493 | if (!journal_file_is_offlining(f)) { | |
494 | (void) set_remove(s->deferred_closes, f); | |
495 | (void) journal_file_close(f); | |
496 | } | |
d025f1e4 ZJS |
497 | } |
498 | ||
26687bf8 OS |
499 | void server_sync(Server *s) { |
500 | JournalFile *f; | |
26687bf8 OS |
501 | Iterator i; |
502 | int r; | |
503 | ||
26687bf8 | 504 | if (s->system_journal) { |
ac2e41f5 | 505 | r = journal_file_set_offline(s->system_journal, false); |
26687bf8 | 506 | if (r < 0) |
65089b82 | 507 | log_warning_errno(r, "Failed to sync system journal, ignoring: %m"); |
26687bf8 OS |
508 | } |
509 | ||
65c1d46b | 510 | ORDERED_HASHMAP_FOREACH(f, s->user_journals, i) { |
ac2e41f5 | 511 | r = journal_file_set_offline(f, false); |
26687bf8 | 512 | if (r < 0) |
65089b82 | 513 | log_warning_errno(r, "Failed to sync user journal, ignoring: %m"); |
26687bf8 OS |
514 | } |
515 | ||
f9a810be LP |
516 | if (s->sync_event_source) { |
517 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
518 | if (r < 0) | |
da927ba9 | 519 | log_error_errno(r, "Failed to disable sync timer source: %m"); |
f9a810be | 520 | } |
26687bf8 OS |
521 | |
522 | s->sync_scheduled = false; | |
523 | } | |
524 | ||
3a19f215 | 525 | static void do_vacuum(Server *s, JournalStorage *storage, bool verbose) { |
ea69bd41 | 526 | |
63c8666b ZJS |
527 | int r; |
528 | ||
8580d1f7 | 529 | assert(s); |
266a4700 | 530 | assert(storage); |
8580d1f7 | 531 | |
57f443a6 | 532 | (void) cache_space_refresh(s, storage); |
18e758bf FB |
533 | |
534 | if (verbose) | |
535 | server_space_usage_message(s, storage); | |
8580d1f7 | 536 | |
57f443a6 FB |
537 | r = journal_directory_vacuum(storage->path, storage->space.limit, |
538 | storage->metrics.n_max_files, s->max_retention_usec, | |
539 | &s->oldest_file_usec, verbose); | |
63c8666b | 540 | if (r < 0 && r != -ENOENT) |
266a4700 FB |
541 | log_warning_errno(r, "Failed to vacuum %s, ignoring: %m", storage->path); |
542 | ||
a0edc477 | 543 | cache_space_invalidate(&storage->space); |
63c8666b ZJS |
544 | } |
545 | ||
3a19f215 | 546 | int server_vacuum(Server *s, bool verbose) { |
8580d1f7 | 547 | assert(s); |
d025f1e4 ZJS |
548 | |
549 | log_debug("Vacuuming..."); | |
550 | ||
551 | s->oldest_file_usec = 0; | |
552 | ||
266a4700 | 553 | if (s->system_journal) |
3a19f215 | 554 | do_vacuum(s, &s->system_storage, verbose); |
266a4700 | 555 | if (s->runtime_journal) |
3a19f215 | 556 | do_vacuum(s, &s->runtime_storage, verbose); |
d025f1e4 | 557 | |
8580d1f7 | 558 | return 0; |
d025f1e4 ZJS |
559 | } |
560 | ||
0c24bb23 LP |
561 | static void server_cache_machine_id(Server *s) { |
562 | sd_id128_t id; | |
563 | int r; | |
564 | ||
565 | assert(s); | |
566 | ||
567 | r = sd_id128_get_machine(&id); | |
568 | if (r < 0) | |
569 | return; | |
570 | ||
571 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
572 | } | |
573 | ||
574 | static void server_cache_boot_id(Server *s) { | |
575 | sd_id128_t id; | |
576 | int r; | |
577 | ||
578 | assert(s); | |
579 | ||
580 | r = sd_id128_get_boot(&id); | |
581 | if (r < 0) | |
582 | return; | |
583 | ||
584 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
585 | } | |
586 | ||
587 | static void server_cache_hostname(Server *s) { | |
588 | _cleanup_free_ char *t = NULL; | |
589 | char *x; | |
590 | ||
591 | assert(s); | |
592 | ||
593 | t = gethostname_malloc(); | |
594 | if (!t) | |
595 | return; | |
596 | ||
597 | x = strappend("_HOSTNAME=", t); | |
598 | if (!x) | |
599 | return; | |
600 | ||
601 | free(s->hostname_field); | |
602 | s->hostname_field = x; | |
603 | } | |
604 | ||
8531ae70 | 605 | static bool shall_try_append_again(JournalFile *f, int r) { |
6e1045e5 | 606 | switch(r) { |
ae739cc1 | 607 | |
6e1045e5 ZJS |
608 | case -E2BIG: /* Hit configured limit */ |
609 | case -EFBIG: /* Hit fs limit */ | |
610 | case -EDQUOT: /* Quota limit hit */ | |
611 | case -ENOSPC: /* Disk full */ | |
d025f1e4 | 612 | log_debug("%s: Allocation limit reached, rotating.", f->path); |
6e1045e5 | 613 | return true; |
ae739cc1 | 614 | |
6e1045e5 ZJS |
615 | case -EIO: /* I/O error of some kind (mmap) */ |
616 | log_warning("%s: IO error, rotating.", f->path); | |
617 | return true; | |
ae739cc1 | 618 | |
6e1045e5 | 619 | case -EHOSTDOWN: /* Other machine */ |
d025f1e4 | 620 | log_info("%s: Journal file from other machine, rotating.", f->path); |
6e1045e5 | 621 | return true; |
ae739cc1 | 622 | |
6e1045e5 | 623 | case -EBUSY: /* Unclean shutdown */ |
d025f1e4 | 624 | log_info("%s: Unclean shutdown, rotating.", f->path); |
6e1045e5 | 625 | return true; |
ae739cc1 | 626 | |
6e1045e5 | 627 | case -EPROTONOSUPPORT: /* Unsupported feature */ |
d025f1e4 | 628 | log_info("%s: Unsupported feature, rotating.", f->path); |
6e1045e5 | 629 | return true; |
ae739cc1 | 630 | |
6e1045e5 ZJS |
631 | case -EBADMSG: /* Corrupted */ |
632 | case -ENODATA: /* Truncated */ | |
633 | case -ESHUTDOWN: /* Already archived */ | |
d025f1e4 | 634 | log_warning("%s: Journal file corrupted, rotating.", f->path); |
6e1045e5 | 635 | return true; |
ae739cc1 | 636 | |
6e1045e5 | 637 | case -EIDRM: /* Journal file has been deleted */ |
2678031a | 638 | log_warning("%s: Journal file has been deleted, rotating.", f->path); |
6e1045e5 | 639 | return true; |
ae739cc1 LP |
640 | |
641 | case -ETXTBSY: /* Journal file is from the future */ | |
c1a9199e | 642 | log_warning("%s: Journal file is from the future, rotating.", f->path); |
ae739cc1 LP |
643 | return true; |
644 | ||
6e1045e5 | 645 | default: |
d025f1e4 | 646 | return false; |
6e1045e5 | 647 | } |
d025f1e4 ZJS |
648 | } |
649 | ||
d07f7b9e | 650 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) { |
7c070017 | 651 | bool vacuumed = false, rotate = false; |
0f972d66 | 652 | struct dual_timestamp ts; |
d025f1e4 | 653 | JournalFile *f; |
d025f1e4 ZJS |
654 | int r; |
655 | ||
656 | assert(s); | |
657 | assert(iovec); | |
658 | assert(n > 0); | |
659 | ||
0f972d66 LP |
660 | /* Get the closest, linearized time we have for this log event from the event loop. (Note that we do not use |
661 | * the source time, and not even the time the event was originally seen, but instead simply the time we started | |
662 | * processing it, as we want strictly linear ordering in what we write out.) */ | |
663 | assert_se(sd_event_now(s->event, CLOCK_REALTIME, &ts.realtime) >= 0); | |
664 | assert_se(sd_event_now(s->event, CLOCK_MONOTONIC, &ts.monotonic) >= 0); | |
665 | ||
7c070017 LP |
666 | if (ts.realtime < s->last_realtime_clock) { |
667 | /* When the time jumps backwards, let's immediately rotate. Of course, this should not happen during | |
668 | * regular operation. However, when it does happen, then we should make sure that we start fresh files | |
669 | * to ensure that the entries in the journal files are strictly ordered by time, in order to ensure | |
670 | * bisection works correctly. */ | |
d025f1e4 | 671 | |
7c070017 LP |
672 | log_debug("Time jumped backwards, rotating."); |
673 | rotate = true; | |
674 | } else { | |
675 | ||
676 | f = find_journal(s, uid); | |
677 | if (!f) | |
678 | return; | |
679 | ||
680 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
681 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
682 | rotate = true; | |
683 | } | |
684 | } | |
d025f1e4 | 685 | |
7c070017 | 686 | if (rotate) { |
d025f1e4 | 687 | server_rotate(s); |
3a19f215 | 688 | server_vacuum(s, false); |
d025f1e4 ZJS |
689 | vacuumed = true; |
690 | ||
691 | f = find_journal(s, uid); | |
692 | if (!f) | |
693 | return; | |
694 | } | |
695 | ||
7c070017 LP |
696 | s->last_realtime_clock = ts.realtime; |
697 | ||
0f972d66 | 698 | r = journal_file_append_entry(f, &ts, iovec, n, &s->seqnum, NULL, NULL); |
26687bf8 | 699 | if (r >= 0) { |
d07f7b9e | 700 | server_schedule_sync(s, priority); |
d025f1e4 | 701 | return; |
26687bf8 | 702 | } |
d025f1e4 ZJS |
703 | |
704 | if (vacuumed || !shall_try_append_again(f, r)) { | |
8266e1c0 | 705 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); |
d025f1e4 ZJS |
706 | return; |
707 | } | |
708 | ||
709 | server_rotate(s); | |
3a19f215 | 710 | server_vacuum(s, false); |
d025f1e4 ZJS |
711 | |
712 | f = find_journal(s, uid); | |
713 | if (!f) | |
714 | return; | |
715 | ||
716 | log_debug("Retrying write."); | |
0f972d66 | 717 | r = journal_file_append_entry(f, &ts, iovec, n, &s->seqnum, NULL, NULL); |
8266e1c0 LP |
718 | if (r < 0) |
719 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); | |
720 | else | |
d07f7b9e | 721 | server_schedule_sync(s, priority); |
d025f1e4 ZJS |
722 | } |
723 | ||
22e3a02b LP |
724 | #define IOVEC_ADD_NUMERIC_FIELD(iovec, n, value, type, isset, format, field) \ |
725 | if (isset(value)) { \ | |
726 | char *k; \ | |
727 | k = newa(char, strlen(field "=") + DECIMAL_STR_MAX(type) + 1); \ | |
728 | sprintf(k, field "=" format, value); \ | |
e6a7ec4b | 729 | iovec[n++] = IOVEC_MAKE_STRING(k); \ |
22e3a02b | 730 | } |
4b58153d | 731 | |
22e3a02b LP |
732 | #define IOVEC_ADD_STRING_FIELD(iovec, n, value, field) \ |
733 | if (!isempty(value)) { \ | |
734 | char *k; \ | |
735 | k = strjoina(field "=", value); \ | |
e6a7ec4b | 736 | iovec[n++] = IOVEC_MAKE_STRING(k); \ |
22e3a02b | 737 | } |
4b58153d | 738 | |
22e3a02b LP |
739 | #define IOVEC_ADD_ID128_FIELD(iovec, n, value, field) \ |
740 | if (!sd_id128_is_null(value)) { \ | |
741 | char *k; \ | |
742 | k = newa(char, strlen(field "=") + SD_ID128_STRING_MAX); \ | |
743 | sd_id128_to_string(value, stpcpy(k, field "=")); \ | |
e6a7ec4b | 744 | iovec[n++] = IOVEC_MAKE_STRING(k); \ |
22e3a02b | 745 | } |
4b58153d | 746 | |
22e3a02b LP |
747 | #define IOVEC_ADD_SIZED_FIELD(iovec, n, value, value_size, field) \ |
748 | if (value_size > 0) { \ | |
749 | char *k; \ | |
750 | k = newa(char, strlen(field "=") + value_size + 1); \ | |
751 | *((char*) mempcpy(stpcpy(k, field "="), value, value_size)) = 0; \ | |
e6a7ec4b | 752 | iovec[n++] = IOVEC_MAKE_STRING(k); \ |
22e3a02b | 753 | } \ |
4b58153d | 754 | |
d025f1e4 ZJS |
755 | static void dispatch_message_real( |
756 | Server *s, | |
d3070fbd | 757 | struct iovec *iovec, size_t n, size_t m, |
22e3a02b | 758 | const ClientContext *c, |
3b3154df | 759 | const struct timeval *tv, |
d07f7b9e | 760 | int priority, |
22e3a02b LP |
761 | pid_t object_pid) { |
762 | ||
763 | char source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)]; | |
764 | uid_t journal_uid; | |
765 | ClientContext *o; | |
d025f1e4 ZJS |
766 | |
767 | assert(s); | |
768 | assert(iovec); | |
769 | assert(n > 0); | |
d3070fbd LP |
770 | assert(n + |
771 | N_IOVEC_META_FIELDS + | |
772 | (pid_is_valid(object_pid) ? N_IOVEC_OBJECT_FIELDS : 0) + | |
773 | client_context_extra_fields_n_iovec(c) <= m); | |
19cace37 | 774 | |
22e3a02b LP |
775 | if (c) { |
776 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->pid, pid_t, pid_is_valid, PID_FMT, "_PID"); | |
777 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->uid, uid_t, uid_is_valid, UID_FMT, "_UID"); | |
778 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->gid, gid_t, gid_is_valid, GID_FMT, "_GID"); | |
4b58153d | 779 | |
22e3a02b LP |
780 | IOVEC_ADD_STRING_FIELD(iovec, n, c->comm, "_COMM"); |
781 | IOVEC_ADD_STRING_FIELD(iovec, n, c->exe, "_EXE"); | |
782 | IOVEC_ADD_STRING_FIELD(iovec, n, c->cmdline, "_CMDLINE"); | |
783 | IOVEC_ADD_STRING_FIELD(iovec, n, c->capeff, "_CAP_EFFECTIVE"); | |
d025f1e4 | 784 | |
22e3a02b | 785 | IOVEC_ADD_SIZED_FIELD(iovec, n, c->label, c->label_size, "_SELINUX_CONTEXT"); |
ae018d9b | 786 | |
22e3a02b LP |
787 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->auditid, uint32_t, audit_session_is_valid, "%" PRIu32, "_AUDIT_SESSION"); |
788 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->loginuid, uid_t, uid_is_valid, UID_FMT, "_AUDIT_LOGINUID"); | |
d025f1e4 | 789 | |
22e3a02b LP |
790 | IOVEC_ADD_STRING_FIELD(iovec, n, c->cgroup, "_SYSTEMD_CGROUP"); |
791 | IOVEC_ADD_STRING_FIELD(iovec, n, c->session, "_SYSTEMD_SESSION"); | |
792 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->owner_uid, uid_t, uid_is_valid, UID_FMT, "_SYSTEMD_OWNER_UID"); | |
793 | IOVEC_ADD_STRING_FIELD(iovec, n, c->unit, "_SYSTEMD_UNIT"); | |
794 | IOVEC_ADD_STRING_FIELD(iovec, n, c->user_unit, "_SYSTEMD_USER_UNIT"); | |
795 | IOVEC_ADD_STRING_FIELD(iovec, n, c->slice, "_SYSTEMD_SLICE"); | |
796 | IOVEC_ADD_STRING_FIELD(iovec, n, c->user_slice, "_SYSTEMD_USER_SLICE"); | |
e7ff4e7f | 797 | |
22e3a02b | 798 | IOVEC_ADD_ID128_FIELD(iovec, n, c->invocation_id, "_SYSTEMD_INVOCATION_ID"); |
d3070fbd LP |
799 | |
800 | if (c->extra_fields_n_iovec > 0) { | |
801 | memcpy(iovec + n, c->extra_fields_iovec, c->extra_fields_n_iovec * sizeof(struct iovec)); | |
802 | n += c->extra_fields_n_iovec; | |
803 | } | |
d025f1e4 | 804 | } |
968f3196 | 805 | |
22e3a02b | 806 | assert(n <= m); |
968f3196 | 807 | |
22e3a02b | 808 | if (pid_is_valid(object_pid) && client_context_get(s, object_pid, NULL, NULL, 0, NULL, &o) >= 0) { |
968f3196 | 809 | |
22e3a02b LP |
810 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->pid, pid_t, pid_is_valid, PID_FMT, "OBJECT_PID"); |
811 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->uid, uid_t, uid_is_valid, UID_FMT, "OBJECT_UID"); | |
812 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->gid, gid_t, gid_is_valid, GID_FMT, "OBJECT_GID"); | |
968f3196 | 813 | |
22e3a02b LP |
814 | IOVEC_ADD_STRING_FIELD(iovec, n, o->comm, "OBJECT_COMM"); |
815 | IOVEC_ADD_STRING_FIELD(iovec, n, o->exe, "OBJECT_EXE"); | |
816 | IOVEC_ADD_STRING_FIELD(iovec, n, o->cmdline, "OBJECT_CMDLINE"); | |
817 | IOVEC_ADD_STRING_FIELD(iovec, n, o->capeff, "OBJECT_CAP_EFFECTIVE"); | |
968f3196 | 818 | |
22e3a02b | 819 | IOVEC_ADD_SIZED_FIELD(iovec, n, o->label, o->label_size, "OBJECT_SELINUX_CONTEXT"); |
19cace37 | 820 | |
22e3a02b LP |
821 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->auditid, uint32_t, audit_session_is_valid, "%" PRIu32, "OBJECT_AUDIT_SESSION"); |
822 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->loginuid, uid_t, uid_is_valid, UID_FMT, "OBJECT_AUDIT_LOGINUID"); | |
d473176a | 823 | |
22e3a02b LP |
824 | IOVEC_ADD_STRING_FIELD(iovec, n, o->cgroup, "OBJECT_SYSTEMD_CGROUP"); |
825 | IOVEC_ADD_STRING_FIELD(iovec, n, o->session, "OBJECT_SYSTEMD_SESSION"); | |
826 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->owner_uid, uid_t, uid_is_valid, UID_FMT, "OBJECT_SYSTEMD_OWNER_UID"); | |
827 | IOVEC_ADD_STRING_FIELD(iovec, n, o->unit, "OBJECT_SYSTEMD_UNIT"); | |
828 | IOVEC_ADD_STRING_FIELD(iovec, n, o->user_unit, "OBJECT_SYSTEMD_USER_UNIT"); | |
829 | IOVEC_ADD_STRING_FIELD(iovec, n, o->slice, "OBJECT_SYSTEMD_SLICE"); | |
830 | IOVEC_ADD_STRING_FIELD(iovec, n, o->user_slice, "OBJECT_SYSTEMD_USER_SLICE"); | |
d473176a | 831 | |
22e3a02b | 832 | IOVEC_ADD_ID128_FIELD(iovec, n, o->invocation_id, "OBJECT_SYSTEMD_INVOCATION_ID="); |
968f3196 | 833 | } |
22e3a02b | 834 | |
968f3196 | 835 | assert(n <= m); |
d025f1e4 ZJS |
836 | |
837 | if (tv) { | |
398a50cd | 838 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=" USEC_FMT, timeval_load(tv)); |
e6a7ec4b | 839 | iovec[n++] = IOVEC_MAKE_STRING(source_time); |
d025f1e4 ZJS |
840 | } |
841 | ||
842 | /* Note that strictly speaking storing the boot id here is | |
843 | * redundant since the entry includes this in-line | |
844 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 | 845 | if (!isempty(s->boot_id_field)) |
e6a7ec4b | 846 | iovec[n++] = IOVEC_MAKE_STRING(s->boot_id_field); |
d025f1e4 | 847 | |
0c24bb23 | 848 | if (!isempty(s->machine_id_field)) |
e6a7ec4b | 849 | iovec[n++] = IOVEC_MAKE_STRING(s->machine_id_field); |
d025f1e4 | 850 | |
0c24bb23 | 851 | if (!isempty(s->hostname_field)) |
e6a7ec4b | 852 | iovec[n++] = IOVEC_MAKE_STRING(s->hostname_field); |
d025f1e4 ZJS |
853 | |
854 | assert(n <= m); | |
855 | ||
22e3a02b LP |
856 | if (s->split_mode == SPLIT_UID && c && uid_is_valid(c->uid)) |
857 | /* Split up strictly by (non-root) UID */ | |
858 | journal_uid = c->uid; | |
859 | else if (s->split_mode == SPLIT_LOGIN && c && c->uid > 0 && uid_is_valid(c->owner_uid)) | |
edc3797f LP |
860 | /* Split up by login UIDs. We do this only if the |
861 | * realuid is not root, in order not to accidentally | |
862 | * leak privileged information to the user that is | |
863 | * logged by a privileged process that is part of an | |
7517e174 | 864 | * unprivileged session. */ |
22e3a02b | 865 | journal_uid = c->owner_uid; |
da499392 KS |
866 | else |
867 | journal_uid = 0; | |
759c945a | 868 | |
d07f7b9e | 869 | write_to_journal(s, journal_uid, iovec, n, priority); |
d025f1e4 ZJS |
870 | } |
871 | ||
13181942 | 872 | void server_driver_message(Server *s, pid_t object_pid, const char *message_id, const char *format, ...) { |
22e3a02b | 873 | |
d3070fbd LP |
874 | struct iovec *iovec; |
875 | size_t n = 0, k, m; | |
d025f1e4 | 876 | va_list ap; |
22e3a02b | 877 | int r; |
d025f1e4 ZJS |
878 | |
879 | assert(s); | |
880 | assert(format); | |
881 | ||
d3070fbd LP |
882 | m = N_IOVEC_META_FIELDS + 5 + N_IOVEC_PAYLOAD_FIELDS + client_context_extra_fields_n_iovec(s->my_context); |
883 | iovec = newa(struct iovec, m); | |
884 | ||
4850d39a | 885 | assert_cc(3 == LOG_FAC(LOG_DAEMON)); |
e6a7ec4b LP |
886 | iovec[n++] = IOVEC_MAKE_STRING("SYSLOG_FACILITY=3"); |
887 | iovec[n++] = IOVEC_MAKE_STRING("SYSLOG_IDENTIFIER=systemd-journald"); | |
b6fa2555 | 888 | |
e6a7ec4b | 889 | iovec[n++] = IOVEC_MAKE_STRING("_TRANSPORT=driver"); |
4850d39a | 890 | assert_cc(6 == LOG_INFO); |
e6a7ec4b | 891 | iovec[n++] = IOVEC_MAKE_STRING("PRIORITY=6"); |
d025f1e4 | 892 | |
2b044526 | 893 | if (message_id) |
e6a7ec4b | 894 | iovec[n++] = IOVEC_MAKE_STRING(message_id); |
d3070fbd | 895 | k = n; |
8a03c9ef ZJS |
896 | |
897 | va_start(ap, format); | |
d3070fbd | 898 | r = log_format_iovec(iovec, m, &n, false, 0, format, ap); |
32917e33 | 899 | /* Error handling below */ |
8a03c9ef ZJS |
900 | va_end(ap); |
901 | ||
32917e33 | 902 | if (r >= 0) |
d3070fbd | 903 | dispatch_message_real(s, iovec, n, m, s->my_context, NULL, LOG_INFO, object_pid); |
8a03c9ef | 904 | |
d3070fbd LP |
905 | while (k < n) |
906 | free(iovec[k++].iov_base); | |
32917e33 ZJS |
907 | |
908 | if (r < 0) { | |
909 | /* We failed to format the message. Emit a warning instead. */ | |
910 | char buf[LINE_MAX]; | |
911 | ||
912 | xsprintf(buf, "MESSAGE=Entry printing failed: %s", strerror(-r)); | |
913 | ||
914 | n = 3; | |
e6a7ec4b LP |
915 | iovec[n++] = IOVEC_MAKE_STRING("PRIORITY=4"); |
916 | iovec[n++] = IOVEC_MAKE_STRING(buf); | |
d3070fbd | 917 | dispatch_message_real(s, iovec, n, m, s->my_context, NULL, LOG_INFO, object_pid); |
32917e33 | 918 | } |
d025f1e4 ZJS |
919 | } |
920 | ||
921 | void server_dispatch_message( | |
922 | Server *s, | |
d3070fbd | 923 | struct iovec *iovec, size_t n, size_t m, |
22e3a02b | 924 | ClientContext *c, |
3b3154df | 925 | const struct timeval *tv, |
968f3196 ZJS |
926 | int priority, |
927 | pid_t object_pid) { | |
d025f1e4 | 928 | |
8580d1f7 | 929 | uint64_t available = 0; |
22e3a02b | 930 | int rl; |
d025f1e4 ZJS |
931 | |
932 | assert(s); | |
933 | assert(iovec || n == 0); | |
934 | ||
935 | if (n == 0) | |
936 | return; | |
937 | ||
938 | if (LOG_PRI(priority) > s->max_level_store) | |
939 | return; | |
940 | ||
2f5df74a HHPF |
941 | /* Stop early in case the information will not be stored |
942 | * in a journal. */ | |
943 | if (s->storage == STORAGE_NONE) | |
944 | return; | |
945 | ||
22e3a02b LP |
946 | if (c && c->unit) { |
947 | (void) determine_space(s, &available, NULL); | |
d025f1e4 | 948 | |
22e3a02b LP |
949 | rl = journal_rate_limit_test(s->rate_limit, c->unit, priority & LOG_PRIMASK, available); |
950 | if (rl == 0) | |
951 | return; | |
d025f1e4 | 952 | |
22e3a02b LP |
953 | /* Write a suppression message if we suppressed something */ |
954 | if (rl > 1) | |
13181942 LP |
955 | server_driver_message(s, c->pid, |
956 | "MESSAGE_ID=" SD_MESSAGE_JOURNAL_DROPPED_STR, | |
957 | LOG_MESSAGE("Suppressed %i messages from %s", rl - 1, c->unit), | |
958 | LOG_MESSAGE("N_DROPPED=%i", rl - 1), | |
22e3a02b | 959 | NULL); |
d025f1e4 ZJS |
960 | } |
961 | ||
22e3a02b | 962 | dispatch_message_real(s, iovec, n, m, c, tv, priority, object_pid); |
d025f1e4 ZJS |
963 | } |
964 | ||
f78273c8 | 965 | int server_flush_to_var(Server *s, bool require_flag_file) { |
d025f1e4 ZJS |
966 | sd_id128_t machine; |
967 | sd_journal *j = NULL; | |
fbb63411 LP |
968 | char ts[FORMAT_TIMESPAN_MAX]; |
969 | usec_t start; | |
970 | unsigned n = 0; | |
971 | int r; | |
d025f1e4 ZJS |
972 | |
973 | assert(s); | |
974 | ||
f78273c8 | 975 | if (!IN_SET(s->storage, STORAGE_AUTO, STORAGE_PERSISTENT)) |
d025f1e4 ZJS |
976 | return 0; |
977 | ||
978 | if (!s->runtime_journal) | |
979 | return 0; | |
980 | ||
f78273c8 LP |
981 | if (require_flag_file && !flushed_flag_is_set()) |
982 | return 0; | |
983 | ||
8580d1f7 | 984 | (void) system_journal_open(s, true); |
d025f1e4 ZJS |
985 | |
986 | if (!s->system_journal) | |
987 | return 0; | |
988 | ||
989 | log_debug("Flushing to /var..."); | |
990 | ||
fbb63411 LP |
991 | start = now(CLOCK_MONOTONIC); |
992 | ||
d025f1e4 | 993 | r = sd_id128_get_machine(&machine); |
00a16861 | 994 | if (r < 0) |
d025f1e4 | 995 | return r; |
d025f1e4 ZJS |
996 | |
997 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
23bbb0de MS |
998 | if (r < 0) |
999 | return log_error_errno(r, "Failed to read runtime journal: %m"); | |
d025f1e4 | 1000 | |
93b73b06 LP |
1001 | sd_journal_set_data_threshold(j, 0); |
1002 | ||
d025f1e4 ZJS |
1003 | SD_JOURNAL_FOREACH(j) { |
1004 | Object *o = NULL; | |
1005 | JournalFile *f; | |
1006 | ||
1007 | f = j->current_file; | |
1008 | assert(f && f->current_offset > 0); | |
1009 | ||
fbb63411 LP |
1010 | n++; |
1011 | ||
d025f1e4 ZJS |
1012 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1013 | if (r < 0) { | |
da927ba9 | 1014 | log_error_errno(r, "Can't read entry: %m"); |
d025f1e4 ZJS |
1015 | goto finish; |
1016 | } | |
1017 | ||
1018 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1019 | if (r >= 0) | |
1020 | continue; | |
1021 | ||
1022 | if (!shall_try_append_again(s->system_journal, r)) { | |
da927ba9 | 1023 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1024 | goto finish; |
1025 | } | |
1026 | ||
1027 | server_rotate(s); | |
3a19f215 | 1028 | server_vacuum(s, false); |
d025f1e4 | 1029 | |
253f59df LP |
1030 | if (!s->system_journal) { |
1031 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1032 | r = -EIO; | |
1033 | goto finish; | |
1034 | } | |
1035 | ||
d025f1e4 ZJS |
1036 | log_debug("Retrying write."); |
1037 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1038 | if (r < 0) { | |
da927ba9 | 1039 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1040 | goto finish; |
1041 | } | |
1042 | } | |
1043 | ||
804ae586 LP |
1044 | r = 0; |
1045 | ||
d025f1e4 ZJS |
1046 | finish: |
1047 | journal_file_post_change(s->system_journal); | |
1048 | ||
804ae586 | 1049 | s->runtime_journal = journal_file_close(s->runtime_journal); |
d025f1e4 ZJS |
1050 | |
1051 | if (r >= 0) | |
c6878637 | 1052 | (void) rm_rf("/run/log/journal", REMOVE_ROOT); |
d025f1e4 | 1053 | |
763c7aa2 | 1054 | sd_journal_close(j); |
d025f1e4 | 1055 | |
13181942 | 1056 | server_driver_message(s, 0, NULL, |
8a03c9ef ZJS |
1057 | LOG_MESSAGE("Time spent on flushing to /var is %s for %u entries.", |
1058 | format_timespan(ts, sizeof(ts), now(CLOCK_MONOTONIC) - start, 0), | |
1059 | n), | |
1060 | NULL); | |
fbb63411 | 1061 | |
d025f1e4 ZJS |
1062 | return r; |
1063 | } | |
1064 | ||
8531ae70 | 1065 | int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
f9a810be | 1066 | Server *s = userdata; |
a315ac4e LP |
1067 | struct ucred *ucred = NULL; |
1068 | struct timeval *tv = NULL; | |
1069 | struct cmsghdr *cmsg; | |
1070 | char *label = NULL; | |
1071 | size_t label_len = 0, m; | |
1072 | struct iovec iovec; | |
1073 | ssize_t n; | |
1074 | int *fds = NULL, v = 0; | |
1075 | unsigned n_fds = 0; | |
1076 | ||
1077 | union { | |
1078 | struct cmsghdr cmsghdr; | |
1079 | ||
1080 | /* We use NAME_MAX space for the SELinux label | |
1081 | * here. The kernel currently enforces no | |
1082 | * limit, but according to suggestions from | |
1083 | * the SELinux people this will change and it | |
1084 | * will probably be identical to NAME_MAX. For | |
1085 | * now we use that, but this should be updated | |
1086 | * one day when the final limit is known. */ | |
1087 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1088 | CMSG_SPACE(sizeof(struct timeval)) + | |
1089 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1090 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1091 | } control = {}; | |
1092 | ||
1093 | union sockaddr_union sa = {}; | |
1094 | ||
1095 | struct msghdr msghdr = { | |
1096 | .msg_iov = &iovec, | |
1097 | .msg_iovlen = 1, | |
1098 | .msg_control = &control, | |
1099 | .msg_controllen = sizeof(control), | |
1100 | .msg_name = &sa, | |
1101 | .msg_namelen = sizeof(sa), | |
1102 | }; | |
f9a810be | 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 | ||
22e3a02b LP |
1112 | /* Try to get the right size, if we can. (Not all sockets support SIOCINQ, hence we just try, but don't rely on |
1113 | * it.) */ | |
a315ac4e | 1114 | (void) ioctl(fd, SIOCINQ, &v); |
d025f1e4 | 1115 | |
a315ac4e LP |
1116 | /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */ |
1117 | m = PAGE_ALIGN(MAX3((size_t) v + 1, | |
1118 | (size_t) LINE_MAX, | |
1119 | ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1); | |
d025f1e4 | 1120 | |
a315ac4e LP |
1121 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m)) |
1122 | return log_oom(); | |
875c2e22 | 1123 | |
a315ac4e LP |
1124 | iovec.iov_base = s->buffer; |
1125 | iovec.iov_len = s->buffer_size - 1; /* Leave room for trailing NUL we add later */ | |
d025f1e4 | 1126 | |
a315ac4e LP |
1127 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1128 | if (n < 0) { | |
3742095b | 1129 | if (IN_SET(errno, EINTR, EAGAIN)) |
a315ac4e | 1130 | return 0; |
875c2e22 | 1131 | |
a315ac4e LP |
1132 | return log_error_errno(errno, "recvmsg() failed: %m"); |
1133 | } | |
875c2e22 | 1134 | |
a315ac4e LP |
1135 | CMSG_FOREACH(cmsg, &msghdr) { |
1136 | ||
1137 | if (cmsg->cmsg_level == SOL_SOCKET && | |
1138 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1139 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) | |
1140 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1141 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1142 | cmsg->cmsg_type == SCM_SECURITY) { | |
1143 | label = (char*) CMSG_DATA(cmsg); | |
1144 | label_len = cmsg->cmsg_len - CMSG_LEN(0); | |
1145 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1146 | cmsg->cmsg_type == SO_TIMESTAMP && | |
1147 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval))) | |
1148 | tv = (struct timeval*) CMSG_DATA(cmsg); | |
1149 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1150 | cmsg->cmsg_type == SCM_RIGHTS) { | |
1151 | fds = (int*) CMSG_DATA(cmsg); | |
1152 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
d025f1e4 | 1153 | } |
a315ac4e | 1154 | } |
d025f1e4 | 1155 | |
a315ac4e LP |
1156 | /* And a trailing NUL, just in case */ |
1157 | s->buffer[n] = 0; | |
1158 | ||
1159 | if (fd == s->syslog_fd) { | |
1160 | if (n > 0 && n_fds == 0) | |
1161 | server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len); | |
1162 | else if (n_fds > 0) | |
1163 | log_warning("Got file descriptors via syslog socket. Ignoring."); | |
1164 | ||
1165 | } else if (fd == s->native_fd) { | |
1166 | if (n > 0 && n_fds == 0) | |
1167 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1168 | else if (n == 0 && n_fds == 1) | |
1169 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1170 | else if (n_fds > 0) | |
1171 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
1172 | ||
1173 | } else { | |
1174 | assert(fd == s->audit_fd); | |
1175 | ||
1176 | if (n > 0 && n_fds == 0) | |
1177 | server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen); | |
1178 | else if (n_fds > 0) | |
1179 | log_warning("Got file descriptors via audit socket. Ignoring."); | |
f9a810be | 1180 | } |
a315ac4e LP |
1181 | |
1182 | close_many(fds, n_fds); | |
1183 | return 0; | |
f9a810be | 1184 | } |
d025f1e4 | 1185 | |
f9a810be LP |
1186 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1187 | Server *s = userdata; | |
33d52ab9 | 1188 | int r; |
d025f1e4 | 1189 | |
f9a810be | 1190 | assert(s); |
d025f1e4 | 1191 | |
94b65516 | 1192 | log_info("Received request to flush runtime journal from PID " PID_FMT, si->ssi_pid); |
d025f1e4 | 1193 | |
f78273c8 | 1194 | (void) server_flush_to_var(s, false); |
f9a810be | 1195 | server_sync(s); |
3a19f215 | 1196 | server_vacuum(s, false); |
d025f1e4 | 1197 | |
33d52ab9 LP |
1198 | r = touch("/run/systemd/journal/flushed"); |
1199 | if (r < 0) | |
1200 | log_warning_errno(r, "Failed to touch /run/systemd/journal/flushed, ignoring: %m"); | |
74055aa7 | 1201 | |
18e758bf | 1202 | server_space_usage_message(s, NULL); |
f9a810be LP |
1203 | return 0; |
1204 | } | |
d025f1e4 | 1205 | |
f9a810be LP |
1206 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1207 | Server *s = userdata; | |
33d52ab9 | 1208 | int r; |
d025f1e4 | 1209 | |
f9a810be | 1210 | assert(s); |
d025f1e4 | 1211 | |
94b65516 | 1212 | log_info("Received request to rotate journal from PID " PID_FMT, si->ssi_pid); |
f9a810be | 1213 | server_rotate(s); |
3a19f215 FB |
1214 | server_vacuum(s, true); |
1215 | ||
1216 | if (s->system_journal) | |
1217 | patch_min_use(&s->system_storage); | |
1218 | if (s->runtime_journal) | |
1219 | patch_min_use(&s->runtime_storage); | |
d025f1e4 | 1220 | |
dbd6e31c | 1221 | /* Let clients know when the most recent rotation happened. */ |
33d52ab9 LP |
1222 | r = write_timestamp_file_atomic("/run/systemd/journal/rotated", now(CLOCK_MONOTONIC)); |
1223 | if (r < 0) | |
1224 | log_warning_errno(r, "Failed to write /run/systemd/journal/rotated, ignoring: %m"); | |
dbd6e31c | 1225 | |
f9a810be LP |
1226 | return 0; |
1227 | } | |
d025f1e4 | 1228 | |
f9a810be LP |
1229 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1230 | Server *s = userdata; | |
d025f1e4 | 1231 | |
f9a810be | 1232 | assert(s); |
d025f1e4 | 1233 | |
4daf54a8 | 1234 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1235 | |
6203e07a | 1236 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1237 | return 0; |
1238 | } | |
1239 | ||
94b65516 LP |
1240 | static int dispatch_sigrtmin1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1241 | Server *s = userdata; | |
33d52ab9 | 1242 | int r; |
94b65516 LP |
1243 | |
1244 | assert(s); | |
1245 | ||
1246 | log_debug("Received request to sync from PID " PID_FMT, si->ssi_pid); | |
1247 | ||
1248 | server_sync(s); | |
1249 | ||
1250 | /* Let clients know when the most recent sync happened. */ | |
33d52ab9 LP |
1251 | r = write_timestamp_file_atomic("/run/systemd/journal/synced", now(CLOCK_MONOTONIC)); |
1252 | if (r < 0) | |
1253 | log_warning_errno(r, "Failed to write /run/systemd/journal/synced, ignoring: %m"); | |
94b65516 LP |
1254 | |
1255 | return 0; | |
1256 | } | |
1257 | ||
f9a810be | 1258 | static int setup_signals(Server *s) { |
f9a810be | 1259 | int r; |
d025f1e4 ZJS |
1260 | |
1261 | assert(s); | |
1262 | ||
9bab3b65 | 1263 | assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, SIGRTMIN+1, -1) >= 0); |
d025f1e4 | 1264 | |
151b9b96 | 1265 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1266 | if (r < 0) |
1267 | return r; | |
1268 | ||
151b9b96 | 1269 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1270 | if (r < 0) |
1271 | return r; | |
d025f1e4 | 1272 | |
151b9b96 | 1273 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1274 | if (r < 0) |
1275 | return r; | |
d025f1e4 | 1276 | |
b374689c LP |
1277 | /* Let's process SIGTERM late, so that we flush all queued |
1278 | * messages to disk before we exit */ | |
1279 | r = sd_event_source_set_priority(s->sigterm_event_source, SD_EVENT_PRIORITY_NORMAL+20); | |
1280 | if (r < 0) | |
1281 | return r; | |
1282 | ||
1283 | /* When journald is invoked on the terminal (when debugging), | |
1284 | * it's useful if C-c is handled equivalent to SIGTERM. */ | |
151b9b96 | 1285 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1286 | if (r < 0) |
1287 | return r; | |
d025f1e4 | 1288 | |
b374689c LP |
1289 | r = sd_event_source_set_priority(s->sigint_event_source, SD_EVENT_PRIORITY_NORMAL+20); |
1290 | if (r < 0) | |
1291 | return r; | |
1292 | ||
94b65516 LP |
1293 | /* SIGRTMIN+1 causes an immediate sync. We process this very |
1294 | * late, so that everything else queued at this point is | |
1295 | * really written to disk. Clients can watch | |
1296 | * /run/systemd/journal/synced with inotify until its mtime | |
1297 | * changes to see when a sync happened. */ | |
1298 | r = sd_event_add_signal(s->event, &s->sigrtmin1_event_source, SIGRTMIN+1, dispatch_sigrtmin1, s); | |
1299 | if (r < 0) | |
1300 | return r; | |
1301 | ||
1302 | r = sd_event_source_set_priority(s->sigrtmin1_event_source, SD_EVENT_PRIORITY_NORMAL+15); | |
1303 | if (r < 0) | |
1304 | return r; | |
1305 | ||
d025f1e4 ZJS |
1306 | return 0; |
1307 | } | |
1308 | ||
5707ecf3 ZJS |
1309 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
1310 | Server *s = data; | |
74df0fca | 1311 | int r; |
d025f1e4 | 1312 | |
5707ecf3 | 1313 | assert(s); |
d025f1e4 | 1314 | |
1d84ad94 LP |
1315 | if (proc_cmdline_key_streq(key, "systemd.journald.forward_to_syslog")) { |
1316 | ||
5707ecf3 | 1317 | r = value ? parse_boolean(value) : true; |
d581d9d9 | 1318 | if (r < 0) |
5707ecf3 ZJS |
1319 | log_warning("Failed to parse forward to syslog switch \"%s\". Ignoring.", value); |
1320 | else | |
1321 | s->forward_to_syslog = r; | |
1d84ad94 LP |
1322 | |
1323 | } else if (proc_cmdline_key_streq(key, "systemd.journald.forward_to_kmsg")) { | |
1324 | ||
5707ecf3 ZJS |
1325 | r = value ? parse_boolean(value) : true; |
1326 | if (r < 0) | |
1327 | log_warning("Failed to parse forward to kmsg switch \"%s\". Ignoring.", value); | |
1328 | else | |
1329 | s->forward_to_kmsg = r; | |
1d84ad94 LP |
1330 | |
1331 | } else if (proc_cmdline_key_streq(key, "systemd.journald.forward_to_console")) { | |
1332 | ||
5707ecf3 ZJS |
1333 | r = value ? parse_boolean(value) : true; |
1334 | if (r < 0) | |
1335 | log_warning("Failed to parse forward to console switch \"%s\". Ignoring.", value); | |
1336 | else | |
1337 | s->forward_to_console = r; | |
1d84ad94 LP |
1338 | |
1339 | } else if (proc_cmdline_key_streq(key, "systemd.journald.forward_to_wall")) { | |
1340 | ||
5707ecf3 ZJS |
1341 | r = value ? parse_boolean(value) : true; |
1342 | if (r < 0) | |
1343 | log_warning("Failed to parse forward to wall switch \"%s\". Ignoring.", value); | |
1344 | else | |
1345 | s->forward_to_wall = r; | |
1d84ad94 LP |
1346 | |
1347 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_console")) { | |
1348 | ||
1349 | if (proc_cmdline_value_missing(key, value)) | |
1350 | return 0; | |
1351 | ||
5707ecf3 ZJS |
1352 | r = log_level_from_string(value); |
1353 | if (r < 0) | |
1354 | log_warning("Failed to parse max level console value \"%s\". Ignoring.", value); | |
1355 | else | |
1356 | s->max_level_console = r; | |
1d84ad94 LP |
1357 | |
1358 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_store")) { | |
1359 | ||
1360 | if (proc_cmdline_value_missing(key, value)) | |
1361 | return 0; | |
1362 | ||
5707ecf3 ZJS |
1363 | r = log_level_from_string(value); |
1364 | if (r < 0) | |
1365 | log_warning("Failed to parse max level store value \"%s\". Ignoring.", value); | |
1366 | else | |
1367 | s->max_level_store = r; | |
1d84ad94 LP |
1368 | |
1369 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_syslog")) { | |
1370 | ||
1371 | if (proc_cmdline_value_missing(key, value)) | |
1372 | return 0; | |
1373 | ||
5707ecf3 ZJS |
1374 | r = log_level_from_string(value); |
1375 | if (r < 0) | |
1376 | log_warning("Failed to parse max level syslog value \"%s\". Ignoring.", value); | |
1377 | else | |
1378 | s->max_level_syslog = r; | |
1d84ad94 LP |
1379 | |
1380 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_kmsg")) { | |
1381 | ||
1382 | if (proc_cmdline_value_missing(key, value)) | |
1383 | return 0; | |
1384 | ||
5707ecf3 ZJS |
1385 | r = log_level_from_string(value); |
1386 | if (r < 0) | |
1387 | log_warning("Failed to parse max level kmsg value \"%s\". Ignoring.", value); | |
1388 | else | |
1389 | s->max_level_kmsg = r; | |
1d84ad94 LP |
1390 | |
1391 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_wall")) { | |
1392 | ||
1393 | if (proc_cmdline_value_missing(key, value)) | |
1394 | return 0; | |
1395 | ||
5707ecf3 ZJS |
1396 | r = log_level_from_string(value); |
1397 | if (r < 0) | |
1398 | log_warning("Failed to parse max level wall value \"%s\". Ignoring.", value); | |
1399 | else | |
1400 | s->max_level_wall = r; | |
1d84ad94 | 1401 | |
5707ecf3 ZJS |
1402 | } else if (startswith(key, "systemd.journald")) |
1403 | log_warning("Unknown journald kernel command line option \"%s\". Ignoring.", key); | |
d025f1e4 | 1404 | |
804ae586 | 1405 | /* do not warn about state here, since probably systemd already did */ |
db91ea32 | 1406 | return 0; |
d025f1e4 ZJS |
1407 | } |
1408 | ||
1409 | static int server_parse_config_file(Server *s) { | |
d025f1e4 ZJS |
1410 | assert(s); |
1411 | ||
43688c49 | 1412 | return config_parse_many_nulstr(PKGSYSCONFDIR "/journald.conf", |
da412854 YW |
1413 | CONF_PATHS_NULSTR("systemd/journald.conf.d"), |
1414 | "Journal\0", | |
1415 | config_item_perf_lookup, journald_gperf_lookup, | |
bcde742e | 1416 | CONFIG_PARSE_WARN, s); |
d025f1e4 ZJS |
1417 | } |
1418 | ||
f9a810be LP |
1419 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1420 | Server *s = userdata; | |
26687bf8 OS |
1421 | |
1422 | assert(s); | |
1423 | ||
f9a810be | 1424 | server_sync(s); |
26687bf8 OS |
1425 | return 0; |
1426 | } | |
1427 | ||
d07f7b9e | 1428 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1429 | int r; |
1430 | ||
26687bf8 OS |
1431 | assert(s); |
1432 | ||
d07f7b9e LP |
1433 | if (priority <= LOG_CRIT) { |
1434 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1435 | server_sync(s); | |
1436 | return 0; | |
1437 | } | |
1438 | ||
26687bf8 OS |
1439 | if (s->sync_scheduled) |
1440 | return 0; | |
1441 | ||
f9a810be LP |
1442 | if (s->sync_interval_usec > 0) { |
1443 | usec_t when; | |
ca267016 | 1444 | |
6a0f1f6d | 1445 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1446 | if (r < 0) |
1447 | return r; | |
26687bf8 | 1448 | |
f9a810be LP |
1449 | when += s->sync_interval_usec; |
1450 | ||
1451 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1452 | r = sd_event_add_time( |
1453 | s->event, | |
1454 | &s->sync_event_source, | |
1455 | CLOCK_MONOTONIC, | |
1456 | when, 0, | |
1457 | server_dispatch_sync, s); | |
f9a810be LP |
1458 | if (r < 0) |
1459 | return r; | |
1460 | ||
1461 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1462 | } else { | |
1463 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1464 | if (r < 0) | |
1465 | return r; | |
1466 | ||
1467 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1468 | } | |
26687bf8 | 1469 | if (r < 0) |
f9a810be | 1470 | return r; |
26687bf8 | 1471 | |
f9a810be LP |
1472 | s->sync_scheduled = true; |
1473 | } | |
26687bf8 OS |
1474 | |
1475 | return 0; | |
1476 | } | |
1477 | ||
0c24bb23 LP |
1478 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1479 | Server *s = userdata; | |
1480 | ||
1481 | assert(s); | |
1482 | ||
1483 | server_cache_hostname(s); | |
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | static int server_open_hostname(Server *s) { | |
1488 | int r; | |
1489 | ||
1490 | assert(s); | |
1491 | ||
1492 | s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY); | |
4a62c710 MS |
1493 | if (s->hostname_fd < 0) |
1494 | return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m"); | |
0c24bb23 | 1495 | |
151b9b96 | 1496 | r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s); |
0c24bb23 | 1497 | if (r < 0) { |
28def94c DR |
1498 | /* kernels prior to 3.2 don't support polling this file. Ignore |
1499 | * the failure. */ | |
1500 | if (r == -EPERM) { | |
e53fc357 | 1501 | log_warning_errno(r, "Failed to register hostname fd in event loop, ignoring: %m"); |
03e334a1 | 1502 | s->hostname_fd = safe_close(s->hostname_fd); |
28def94c DR |
1503 | return 0; |
1504 | } | |
1505 | ||
23bbb0de | 1506 | return log_error_errno(r, "Failed to register hostname fd in event loop: %m"); |
0c24bb23 LP |
1507 | } |
1508 | ||
1509 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
23bbb0de MS |
1510 | if (r < 0) |
1511 | return log_error_errno(r, "Failed to adjust priority of host name event source: %m"); | |
0c24bb23 LP |
1512 | |
1513 | return 0; | |
1514 | } | |
1515 | ||
e22aa3d3 LP |
1516 | static int dispatch_notify_event(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1517 | Server *s = userdata; | |
1518 | int r; | |
1519 | ||
1520 | assert(s); | |
1521 | assert(s->notify_event_source == es); | |
1522 | assert(s->notify_fd == fd); | |
1523 | ||
e22aa3d3 | 1524 | /* The $NOTIFY_SOCKET is writable again, now send exactly one |
dd835265 | 1525 | * message on it. Either it's the watchdog event, the initial |
119e9655 LP |
1526 | * READY=1 event or an stdout stream event. If there's nothing |
1527 | * to write anymore, turn our event source off. The next time | |
1528 | * there's something to send it will be turned on again. */ | |
e22aa3d3 LP |
1529 | |
1530 | if (!s->sent_notify_ready) { | |
1531 | static const char p[] = | |
1532 | "READY=1\n" | |
1533 | "STATUS=Processing requests..."; | |
1534 | ssize_t l; | |
1535 | ||
1536 | l = send(s->notify_fd, p, strlen(p), MSG_DONTWAIT); | |
1537 | if (l < 0) { | |
1538 | if (errno == EAGAIN) | |
1539 | return 0; | |
1540 | ||
1541 | return log_error_errno(errno, "Failed to send READY=1 notification message: %m"); | |
1542 | } | |
1543 | ||
1544 | s->sent_notify_ready = true; | |
1545 | log_debug("Sent READY=1 notification."); | |
1546 | ||
119e9655 LP |
1547 | } else if (s->send_watchdog) { |
1548 | ||
1549 | static const char p[] = | |
1550 | "WATCHDOG=1"; | |
1551 | ||
1552 | ssize_t l; | |
1553 | ||
1554 | l = send(s->notify_fd, p, strlen(p), MSG_DONTWAIT); | |
1555 | if (l < 0) { | |
1556 | if (errno == EAGAIN) | |
1557 | return 0; | |
1558 | ||
1559 | return log_error_errno(errno, "Failed to send WATCHDOG=1 notification message: %m"); | |
1560 | } | |
1561 | ||
1562 | s->send_watchdog = false; | |
1563 | log_debug("Sent WATCHDOG=1 notification."); | |
1564 | ||
e22aa3d3 LP |
1565 | } else if (s->stdout_streams_notify_queue) |
1566 | /* Dispatch one stream notification event */ | |
1567 | stdout_stream_send_notify(s->stdout_streams_notify_queue); | |
1568 | ||
61233823 | 1569 | /* Leave us enabled if there's still more to do. */ |
119e9655 | 1570 | if (s->send_watchdog || s->stdout_streams_notify_queue) |
e22aa3d3 LP |
1571 | return 0; |
1572 | ||
1573 | /* There was nothing to do anymore, let's turn ourselves off. */ | |
1574 | r = sd_event_source_set_enabled(es, SD_EVENT_OFF); | |
1575 | if (r < 0) | |
1576 | return log_error_errno(r, "Failed to turn off notify event source: %m"); | |
1577 | ||
1578 | return 0; | |
1579 | } | |
1580 | ||
119e9655 LP |
1581 | static int dispatch_watchdog(sd_event_source *es, uint64_t usec, void *userdata) { |
1582 | Server *s = userdata; | |
1583 | int r; | |
1584 | ||
1585 | assert(s); | |
1586 | ||
1587 | s->send_watchdog = true; | |
1588 | ||
1589 | r = sd_event_source_set_enabled(s->notify_event_source, SD_EVENT_ON); | |
1590 | if (r < 0) | |
1591 | log_warning_errno(r, "Failed to turn on notify event source: %m"); | |
1592 | ||
1593 | r = sd_event_source_set_time(s->watchdog_event_source, usec + s->watchdog_usec / 2); | |
1594 | if (r < 0) | |
1595 | return log_error_errno(r, "Failed to restart watchdog event source: %m"); | |
1596 | ||
1597 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ON); | |
1598 | if (r < 0) | |
1599 | return log_error_errno(r, "Failed to enable watchdog event source: %m"); | |
1600 | ||
1601 | return 0; | |
1602 | } | |
1603 | ||
e22aa3d3 LP |
1604 | static int server_connect_notify(Server *s) { |
1605 | union sockaddr_union sa = { | |
1606 | .un.sun_family = AF_UNIX, | |
1607 | }; | |
1608 | const char *e; | |
1609 | int r; | |
1610 | ||
1611 | assert(s); | |
1612 | assert(s->notify_fd < 0); | |
1613 | assert(!s->notify_event_source); | |
1614 | ||
1615 | /* | |
1616 | So here's the problem: we'd like to send notification | |
1617 | messages to PID 1, but we cannot do that via sd_notify(), | |
1618 | since that's synchronous, and we might end up blocking on | |
1619 | it. Specifically: given that PID 1 might block on | |
1620 | dbus-daemon during IPC, and dbus-daemon is logging to us, | |
1621 | and might hence block on us, we might end up in a deadlock | |
ccddd104 | 1622 | if we block on sending PID 1 notification messages — by |
e22aa3d3 LP |
1623 | generating a full blocking circle. To avoid this, let's |
1624 | create a non-blocking socket, and connect it to the | |
1625 | notification socket, and then wait for POLLOUT before we | |
1626 | send anything. This should efficiently avoid any deadlocks, | |
1627 | as we'll never block on PID 1, hence PID 1 can safely block | |
1628 | on dbus-daemon which can safely block on us again. | |
1629 | ||
1630 | Don't think that this issue is real? It is, see: | |
1631 | https://github.com/systemd/systemd/issues/1505 | |
1632 | */ | |
1633 | ||
1634 | e = getenv("NOTIFY_SOCKET"); | |
1635 | if (!e) | |
1636 | return 0; | |
1637 | ||
4c701096 | 1638 | if (!IN_SET(e[0], '@', '/') || e[1] == 0) { |
e22aa3d3 LP |
1639 | log_error("NOTIFY_SOCKET set to an invalid value: %s", e); |
1640 | return -EINVAL; | |
1641 | } | |
1642 | ||
1643 | if (strlen(e) > sizeof(sa.un.sun_path)) { | |
1644 | log_error("NOTIFY_SOCKET path too long: %s", e); | |
1645 | return -EINVAL; | |
1646 | } | |
1647 | ||
1648 | s->notify_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
1649 | if (s->notify_fd < 0) | |
1650 | return log_error_errno(errno, "Failed to create notify socket: %m"); | |
1651 | ||
1652 | (void) fd_inc_sndbuf(s->notify_fd, NOTIFY_SNDBUF_SIZE); | |
1653 | ||
1654 | strncpy(sa.un.sun_path, e, sizeof(sa.un.sun_path)); | |
1655 | if (sa.un.sun_path[0] == '@') | |
1656 | sa.un.sun_path[0] = 0; | |
1657 | ||
fc2fffe7 | 1658 | r = connect(s->notify_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
e22aa3d3 LP |
1659 | if (r < 0) |
1660 | return log_error_errno(errno, "Failed to connect to notify socket: %m"); | |
1661 | ||
1662 | r = sd_event_add_io(s->event, &s->notify_event_source, s->notify_fd, EPOLLOUT, dispatch_notify_event, s); | |
1663 | if (r < 0) | |
1664 | return log_error_errno(r, "Failed to watch notification socket: %m"); | |
1665 | ||
119e9655 LP |
1666 | if (sd_watchdog_enabled(false, &s->watchdog_usec) > 0) { |
1667 | s->send_watchdog = true; | |
1668 | ||
4de2402b | 1669 | r = sd_event_add_time(s->event, &s->watchdog_event_source, CLOCK_MONOTONIC, now(CLOCK_MONOTONIC) + s->watchdog_usec/2, s->watchdog_usec/4, dispatch_watchdog, s); |
119e9655 LP |
1670 | if (r < 0) |
1671 | return log_error_errno(r, "Failed to add watchdog time event: %m"); | |
1672 | } | |
1673 | ||
e22aa3d3 LP |
1674 | /* This should fire pretty soon, which we'll use to send the |
1675 | * READY=1 event. */ | |
1676 | ||
1677 | return 0; | |
1678 | } | |
1679 | ||
d025f1e4 | 1680 | int server_init(Server *s) { |
13790add | 1681 | _cleanup_fdset_free_ FDSet *fds = NULL; |
d025f1e4 | 1682 | int n, r, fd; |
7d18d348 | 1683 | bool no_sockets; |
d025f1e4 ZJS |
1684 | |
1685 | assert(s); | |
1686 | ||
1687 | zero(*s); | |
e22aa3d3 | 1688 | s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->audit_fd = s->hostname_fd = s->notify_fd = -1; |
d025f1e4 ZJS |
1689 | s->compress = true; |
1690 | s->seal = true; | |
b2392ff3 | 1691 | s->read_kmsg = true; |
d025f1e4 | 1692 | |
119e9655 LP |
1693 | s->watchdog_usec = USEC_INFINITY; |
1694 | ||
26687bf8 OS |
1695 | s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC; |
1696 | s->sync_scheduled = false; | |
1697 | ||
d025f1e4 ZJS |
1698 | s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL; |
1699 | s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST; | |
1700 | ||
40b71e89 | 1701 | s->forward_to_wall = true; |
d025f1e4 | 1702 | |
e150e820 MB |
1703 | s->max_file_usec = DEFAULT_MAX_FILE_USEC; |
1704 | ||
d025f1e4 ZJS |
1705 | s->max_level_store = LOG_DEBUG; |
1706 | s->max_level_syslog = LOG_DEBUG; | |
1707 | s->max_level_kmsg = LOG_NOTICE; | |
1708 | s->max_level_console = LOG_INFO; | |
40b71e89 | 1709 | s->max_level_wall = LOG_EMERG; |
d025f1e4 | 1710 | |
ec20fe5f LP |
1711 | s->line_max = DEFAULT_LINE_MAX; |
1712 | ||
266a4700 FB |
1713 | journal_reset_metrics(&s->system_storage.metrics); |
1714 | journal_reset_metrics(&s->runtime_storage.metrics); | |
d025f1e4 ZJS |
1715 | |
1716 | server_parse_config_file(s); | |
1d84ad94 LP |
1717 | |
1718 | r = proc_cmdline_parse(parse_proc_cmdline_item, s, PROC_CMDLINE_STRIP_RD_PREFIX); | |
1719 | if (r < 0) | |
1720 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
8580d1f7 | 1721 | |
d288f79f | 1722 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
b1389b0d ZJS |
1723 | log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", |
1724 | s->rate_limit_interval, s->rate_limit_burst); | |
d288f79f ZJS |
1725 | s->rate_limit_interval = s->rate_limit_burst = 0; |
1726 | } | |
d025f1e4 | 1727 | |
8580d1f7 | 1728 | (void) mkdir_p("/run/systemd/journal", 0755); |
d025f1e4 | 1729 | |
43cf8388 | 1730 | s->user_journals = ordered_hashmap_new(NULL); |
d025f1e4 ZJS |
1731 | if (!s->user_journals) |
1732 | return log_oom(); | |
1733 | ||
1734 | s->mmap = mmap_cache_new(); | |
1735 | if (!s->mmap) | |
1736 | return log_oom(); | |
1737 | ||
b58c888f VC |
1738 | s->deferred_closes = set_new(NULL); |
1739 | if (!s->deferred_closes) | |
1740 | return log_oom(); | |
1741 | ||
f9a810be | 1742 | r = sd_event_default(&s->event); |
23bbb0de MS |
1743 | if (r < 0) |
1744 | return log_error_errno(r, "Failed to create event loop: %m"); | |
d025f1e4 ZJS |
1745 | |
1746 | n = sd_listen_fds(true); | |
23bbb0de MS |
1747 | if (n < 0) |
1748 | return log_error_errno(n, "Failed to read listening file descriptors from environment: %m"); | |
d025f1e4 ZJS |
1749 | |
1750 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
1751 | ||
1752 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
1753 | ||
1754 | if (s->native_fd >= 0) { | |
1755 | log_error("Too many native sockets passed."); | |
1756 | return -EINVAL; | |
1757 | } | |
1758 | ||
1759 | s->native_fd = fd; | |
1760 | ||
1761 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
1762 | ||
1763 | if (s->stdout_fd >= 0) { | |
1764 | log_error("Too many stdout sockets passed."); | |
1765 | return -EINVAL; | |
1766 | } | |
1767 | ||
1768 | s->stdout_fd = fd; | |
1769 | ||
03ee5c38 LP |
1770 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 || |
1771 | sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) { | |
d025f1e4 ZJS |
1772 | |
1773 | if (s->syslog_fd >= 0) { | |
1774 | log_error("Too many /dev/log sockets passed."); | |
1775 | return -EINVAL; | |
1776 | } | |
1777 | ||
1778 | s->syslog_fd = fd; | |
1779 | ||
875c2e22 LP |
1780 | } else if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
1781 | ||
1782 | if (s->audit_fd >= 0) { | |
1783 | log_error("Too many audit sockets passed."); | |
1784 | return -EINVAL; | |
1785 | } | |
1786 | ||
1787 | s->audit_fd = fd; | |
1788 | ||
4ec3cd73 | 1789 | } else { |
4ec3cd73 | 1790 | |
13790add LP |
1791 | if (!fds) { |
1792 | fds = fdset_new(); | |
1793 | if (!fds) | |
1794 | return log_oom(); | |
1795 | } | |
4ec3cd73 | 1796 | |
13790add LP |
1797 | r = fdset_put(fds, fd); |
1798 | if (r < 0) | |
1799 | return log_oom(); | |
4ec3cd73 | 1800 | } |
d025f1e4 ZJS |
1801 | } |
1802 | ||
15d91bff ZJS |
1803 | /* Try to restore streams, but don't bother if this fails */ |
1804 | (void) server_restore_streams(s, fds); | |
d025f1e4 | 1805 | |
13790add LP |
1806 | if (fdset_size(fds) > 0) { |
1807 | log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds)); | |
1808 | fds = fdset_free(fds); | |
1809 | } | |
1810 | ||
7d18d348 ZJS |
1811 | no_sockets = s->native_fd < 0 && s->stdout_fd < 0 && s->syslog_fd < 0 && s->audit_fd < 0; |
1812 | ||
1813 | /* always open stdout, syslog, native, and kmsg sockets */ | |
37b7affe ZJS |
1814 | |
1815 | /* systemd-journald.socket: /run/systemd/journal/stdout */ | |
15d91bff ZJS |
1816 | r = server_open_stdout_socket(s); |
1817 | if (r < 0) | |
1818 | return r; | |
1819 | ||
37b7affe | 1820 | /* systemd-journald-dev-log.socket: /run/systemd/journal/dev-log */ |
13790add | 1821 | r = server_open_syslog_socket(s); |
d025f1e4 ZJS |
1822 | if (r < 0) |
1823 | return r; | |
1824 | ||
37b7affe | 1825 | /* systemd-journald.socket: /run/systemd/journal/socket */ |
13790add | 1826 | r = server_open_native_socket(s); |
d025f1e4 ZJS |
1827 | if (r < 0) |
1828 | return r; | |
1829 | ||
b2392ff3 | 1830 | /* /dev/kmsg */ |
d025f1e4 ZJS |
1831 | r = server_open_dev_kmsg(s); |
1832 | if (r < 0) | |
1833 | return r; | |
1834 | ||
7d18d348 ZJS |
1835 | /* Unless we got *some* sockets and not audit, open audit socket */ |
1836 | if (s->audit_fd >= 0 || no_sockets) { | |
1837 | r = server_open_audit(s); | |
1838 | if (r < 0) | |
1839 | return r; | |
1840 | } | |
875c2e22 | 1841 | |
d025f1e4 ZJS |
1842 | r = server_open_kernel_seqnum(s); |
1843 | if (r < 0) | |
1844 | return r; | |
1845 | ||
0c24bb23 LP |
1846 | r = server_open_hostname(s); |
1847 | if (r < 0) | |
1848 | return r; | |
1849 | ||
f9a810be | 1850 | r = setup_signals(s); |
d025f1e4 ZJS |
1851 | if (r < 0) |
1852 | return r; | |
1853 | ||
1854 | s->udev = udev_new(); | |
1855 | if (!s->udev) | |
1856 | return -ENOMEM; | |
1857 | ||
f9a810be | 1858 | s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst); |
d025f1e4 ZJS |
1859 | if (!s->rate_limit) |
1860 | return -ENOMEM; | |
1861 | ||
e9174f29 LP |
1862 | r = cg_get_root_path(&s->cgroup_root); |
1863 | if (r < 0) | |
1864 | return r; | |
1865 | ||
0c24bb23 LP |
1866 | server_cache_hostname(s); |
1867 | server_cache_boot_id(s); | |
1868 | server_cache_machine_id(s); | |
1869 | ||
266a4700 FB |
1870 | s->runtime_storage.name = "Runtime journal"; |
1871 | s->system_storage.name = "System journal"; | |
1872 | ||
605405c6 ZJS |
1873 | s->runtime_storage.path = strjoin("/run/log/journal/", SERVER_MACHINE_ID(s)); |
1874 | s->system_storage.path = strjoin("/var/log/journal/", SERVER_MACHINE_ID(s)); | |
266a4700 FB |
1875 | if (!s->runtime_storage.path || !s->system_storage.path) |
1876 | return -ENOMEM; | |
1877 | ||
e22aa3d3 LP |
1878 | (void) server_connect_notify(s); |
1879 | ||
22e3a02b LP |
1880 | (void) client_context_acquire_default(s); |
1881 | ||
804ae586 | 1882 | return system_journal_open(s, false); |
d025f1e4 ZJS |
1883 | } |
1884 | ||
1885 | void server_maybe_append_tags(Server *s) { | |
349cc4a5 | 1886 | #if HAVE_GCRYPT |
d025f1e4 ZJS |
1887 | JournalFile *f; |
1888 | Iterator i; | |
1889 | usec_t n; | |
1890 | ||
1891 | n = now(CLOCK_REALTIME); | |
1892 | ||
1893 | if (s->system_journal) | |
1894 | journal_file_maybe_append_tag(s->system_journal, n); | |
1895 | ||
43cf8388 | 1896 | ORDERED_HASHMAP_FOREACH(f, s->user_journals, i) |
d025f1e4 ZJS |
1897 | journal_file_maybe_append_tag(f, n); |
1898 | #endif | |
1899 | } | |
1900 | ||
1901 | void server_done(Server *s) { | |
1902 | JournalFile *f; | |
1903 | assert(s); | |
1904 | ||
b58c888f VC |
1905 | if (s->deferred_closes) { |
1906 | journal_file_close_set(s->deferred_closes); | |
1907 | set_free(s->deferred_closes); | |
1908 | } | |
1909 | ||
d025f1e4 ZJS |
1910 | while (s->stdout_streams) |
1911 | stdout_stream_free(s->stdout_streams); | |
1912 | ||
22e3a02b LP |
1913 | client_context_flush_all(s); |
1914 | ||
d025f1e4 | 1915 | if (s->system_journal) |
69a3a6fd | 1916 | (void) journal_file_close(s->system_journal); |
d025f1e4 ZJS |
1917 | |
1918 | if (s->runtime_journal) | |
69a3a6fd | 1919 | (void) journal_file_close(s->runtime_journal); |
d025f1e4 | 1920 | |
43cf8388 | 1921 | while ((f = ordered_hashmap_steal_first(s->user_journals))) |
69a3a6fd | 1922 | (void) journal_file_close(f); |
d025f1e4 | 1923 | |
43cf8388 | 1924 | ordered_hashmap_free(s->user_journals); |
d025f1e4 | 1925 | |
f9a810be LP |
1926 | sd_event_source_unref(s->syslog_event_source); |
1927 | sd_event_source_unref(s->native_event_source); | |
1928 | sd_event_source_unref(s->stdout_event_source); | |
1929 | sd_event_source_unref(s->dev_kmsg_event_source); | |
875c2e22 | 1930 | sd_event_source_unref(s->audit_event_source); |
f9a810be LP |
1931 | sd_event_source_unref(s->sync_event_source); |
1932 | sd_event_source_unref(s->sigusr1_event_source); | |
1933 | sd_event_source_unref(s->sigusr2_event_source); | |
1934 | sd_event_source_unref(s->sigterm_event_source); | |
1935 | sd_event_source_unref(s->sigint_event_source); | |
94b65516 | 1936 | sd_event_source_unref(s->sigrtmin1_event_source); |
0c24bb23 | 1937 | sd_event_source_unref(s->hostname_event_source); |
e22aa3d3 | 1938 | sd_event_source_unref(s->notify_event_source); |
119e9655 | 1939 | sd_event_source_unref(s->watchdog_event_source); |
f9a810be | 1940 | sd_event_unref(s->event); |
d025f1e4 | 1941 | |
03e334a1 LP |
1942 | safe_close(s->syslog_fd); |
1943 | safe_close(s->native_fd); | |
1944 | safe_close(s->stdout_fd); | |
1945 | safe_close(s->dev_kmsg_fd); | |
875c2e22 | 1946 | safe_close(s->audit_fd); |
03e334a1 | 1947 | safe_close(s->hostname_fd); |
e22aa3d3 | 1948 | safe_close(s->notify_fd); |
0c24bb23 | 1949 | |
d025f1e4 ZJS |
1950 | if (s->rate_limit) |
1951 | journal_rate_limit_free(s->rate_limit); | |
1952 | ||
1953 | if (s->kernel_seqnum) | |
1954 | munmap(s->kernel_seqnum, sizeof(uint64_t)); | |
1955 | ||
1956 | free(s->buffer); | |
1957 | free(s->tty_path); | |
e9174f29 | 1958 | free(s->cgroup_root); |
99d0966e | 1959 | free(s->hostname_field); |
c6e9e16f ZJS |
1960 | free(s->runtime_storage.path); |
1961 | free(s->system_storage.path); | |
d025f1e4 ZJS |
1962 | |
1963 | if (s->mmap) | |
1964 | mmap_cache_unref(s->mmap); | |
1965 | ||
3e044c49 | 1966 | udev_unref(s->udev); |
d025f1e4 | 1967 | } |
8580d1f7 LP |
1968 | |
1969 | static const char* const storage_table[_STORAGE_MAX] = { | |
1970 | [STORAGE_AUTO] = "auto", | |
1971 | [STORAGE_VOLATILE] = "volatile", | |
1972 | [STORAGE_PERSISTENT] = "persistent", | |
1973 | [STORAGE_NONE] = "none" | |
1974 | }; | |
1975 | ||
1976 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
1977 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
1978 | ||
1979 | static const char* const split_mode_table[_SPLIT_MAX] = { | |
1980 | [SPLIT_LOGIN] = "login", | |
1981 | [SPLIT_UID] = "uid", | |
1982 | [SPLIT_NONE] = "none", | |
1983 | }; | |
1984 | ||
1985 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
1986 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); | |
ec20fe5f LP |
1987 | |
1988 | int config_parse_line_max( | |
1989 | const char* unit, | |
1990 | const char *filename, | |
1991 | unsigned line, | |
1992 | const char *section, | |
1993 | unsigned section_line, | |
1994 | const char *lvalue, | |
1995 | int ltype, | |
1996 | const char *rvalue, | |
1997 | void *data, | |
1998 | void *userdata) { | |
1999 | ||
2000 | size_t *sz = data; | |
2001 | int r; | |
2002 | ||
2003 | assert(filename); | |
2004 | assert(lvalue); | |
2005 | assert(rvalue); | |
2006 | assert(data); | |
2007 | ||
2008 | if (isempty(rvalue)) | |
2009 | /* Empty assignment means default */ | |
2010 | *sz = DEFAULT_LINE_MAX; | |
2011 | else { | |
2012 | uint64_t v; | |
2013 | ||
2014 | r = parse_size(rvalue, 1024, &v); | |
2015 | if (r < 0) { | |
2016 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse LineMax= value, ignoring: %s", rvalue); | |
2017 | return 0; | |
2018 | } | |
2019 | ||
2020 | if (v < 79) { | |
2021 | /* Why specify 79 here as minimum line length? Simply, because the most common traditional | |
2022 | * terminal size is 80ch, and it might make sense to break one character before the natural | |
2023 | * line break would occur on that. */ | |
2024 | log_syntax(unit, LOG_WARNING, filename, line, 0, "LineMax= too small, clamping to 79: %s", rvalue); | |
2025 | *sz = 79; | |
2026 | } else if (v > (uint64_t) (SSIZE_MAX-1)) { | |
2027 | /* So, why specify SSIZE_MAX-1 here? Because that's one below the largest size value read() | |
2028 | * can return, and we need one extra byte for the trailing NUL byte. Of course IRL such large | |
2029 | * memory allocations will fail anyway, hence this limit is mostly theoretical anyway, as we'll | |
2030 | * fail much earlier anyway. */ | |
2031 | log_syntax(unit, LOG_WARNING, filename, line, 0, "LineMax= too large, clamping to %" PRIu64 ": %s", (uint64_t) (SSIZE_MAX-1), rvalue); | |
2032 | *sz = SSIZE_MAX-1; | |
2033 | } else | |
2034 | *sz = (size_t) v; | |
2035 | } | |
2036 | ||
2037 | return 0; | |
2038 | } |