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d025f1e4 ZJS |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
24882e06 LP |
22 | #ifdef HAVE_SELINUX |
23 | #include <selinux/selinux.h> | |
24 | #endif | |
8580d1f7 LP |
25 | #include <sys/ioctl.h> |
26 | #include <sys/mman.h> | |
27 | #include <sys/signalfd.h> | |
28 | #include <sys/statvfs.h> | |
07630cea | 29 | #include <linux/sockios.h> |
24882e06 | 30 | |
8580d1f7 LP |
31 | #include "libudev.h" |
32 | #include "sd-daemon.h" | |
74df0fca LP |
33 | #include "sd-journal.h" |
34 | #include "sd-messages.h" | |
8580d1f7 LP |
35 | |
36 | #include "acl-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" |
958b66ea | 43 | #include "formats-util.h" |
f4f15635 | 44 | #include "fs-util.h" |
8580d1f7 | 45 | #include "hashmap.h" |
958b66ea | 46 | #include "hostname-util.h" |
8580d1f7 LP |
47 | #include "journal-authenticate.h" |
48 | #include "journal-file.h" | |
d025f1e4 ZJS |
49 | #include "journal-internal.h" |
50 | #include "journal-vacuum.h" | |
8580d1f7 | 51 | #include "journald-audit.h" |
d025f1e4 | 52 | #include "journald-kmsg.h" |
d025f1e4 | 53 | #include "journald-native.h" |
8580d1f7 | 54 | #include "journald-rate-limit.h" |
3ffd4af2 | 55 | #include "journald-server.h" |
8580d1f7 LP |
56 | #include "journald-stream.h" |
57 | #include "journald-syslog.h" | |
07630cea LP |
58 | #include "missing.h" |
59 | #include "mkdir.h" | |
6bedfcbb | 60 | #include "parse-util.h" |
07630cea LP |
61 | #include "process-util.h" |
62 | #include "rm-rf.h" | |
63 | #include "selinux-util.h" | |
64 | #include "signal-util.h" | |
65 | #include "socket-util.h" | |
8b43440b | 66 | #include "string-table.h" |
07630cea | 67 | #include "string-util.h" |
d025f1e4 | 68 | |
d025f1e4 ZJS |
69 | #define USER_JOURNALS_MAX 1024 |
70 | ||
26687bf8 | 71 | #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE) |
7f1ad696 LP |
72 | #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC) |
73 | #define DEFAULT_RATE_LIMIT_BURST 1000 | |
e150e820 | 74 | #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH |
d025f1e4 | 75 | |
8580d1f7 | 76 | #define RECHECK_SPACE_USEC (30*USEC_PER_SEC) |
d025f1e4 | 77 | |
8580d1f7 LP |
78 | static int determine_space_for( |
79 | Server *s, | |
80 | JournalMetrics *metrics, | |
81 | const char *path, | |
82 | const char *name, | |
83 | bool verbose, | |
84 | bool patch_min_use, | |
85 | uint64_t *available, | |
86 | uint64_t *limit) { | |
87 | ||
88 | uint64_t sum = 0, ss_avail, avail; | |
7fd1b19b | 89 | _cleanup_closedir_ DIR *d = NULL; |
8580d1f7 LP |
90 | struct dirent *de; |
91 | struct statvfs ss; | |
92 | const char *p; | |
d025f1e4 | 93 | usec_t ts; |
d025f1e4 | 94 | |
8580d1f7 LP |
95 | assert(s); |
96 | assert(metrics); | |
97 | assert(path); | |
98 | assert(name); | |
d025f1e4 | 99 | |
8580d1f7 | 100 | ts = now(CLOCK_MONOTONIC); |
d025f1e4 | 101 | |
8580d1f7 | 102 | if (!verbose && s->cached_space_timestamp + RECHECK_SPACE_USEC > ts) { |
d025f1e4 | 103 | |
8580d1f7 LP |
104 | if (available) |
105 | *available = s->cached_space_available; | |
106 | if (limit) | |
107 | *limit = s->cached_space_limit; | |
d025f1e4 | 108 | |
d025f1e4 | 109 | return 0; |
8580d1f7 | 110 | } |
d025f1e4 | 111 | |
8580d1f7 | 112 | p = strjoina(path, SERVER_MACHINE_ID(s)); |
d025f1e4 | 113 | d = opendir(p); |
d025f1e4 | 114 | if (!d) |
8580d1f7 | 115 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno, "Failed to open %s: %m", p); |
d025f1e4 ZJS |
116 | |
117 | if (fstatvfs(dirfd(d), &ss) < 0) | |
8580d1f7 | 118 | return log_error_errno(errno, "Failed to fstatvfs(%s): %m", p); |
d025f1e4 | 119 | |
8580d1f7 | 120 | FOREACH_DIRENT_ALL(de, d, break) { |
d025f1e4 | 121 | struct stat st; |
d025f1e4 ZJS |
122 | |
123 | if (!endswith(de->d_name, ".journal") && | |
124 | !endswith(de->d_name, ".journal~")) | |
125 | continue; | |
126 | ||
8580d1f7 LP |
127 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) { |
128 | log_debug_errno(errno, "Failed to stat %s/%s, ignoring: %m", p, de->d_name); | |
d025f1e4 | 129 | continue; |
8580d1f7 | 130 | } |
d025f1e4 ZJS |
131 | |
132 | if (!S_ISREG(st.st_mode)) | |
133 | continue; | |
134 | ||
135 | sum += (uint64_t) st.st_blocks * 512UL; | |
136 | } | |
137 | ||
8580d1f7 LP |
138 | /* If request, then let's bump the min_use limit to the |
139 | * current usage on disk. We do this when starting up and | |
140 | * first opening the journal files. This way sudden spikes in | |
141 | * disk usage will not cause journald to vacuum files without | |
142 | * bounds. Note that this means that only a restart of | |
143 | * journald will make it reset this value. */ | |
d025f1e4 | 144 | |
8580d1f7 LP |
145 | if (patch_min_use) |
146 | metrics->min_use = MAX(metrics->min_use, sum); | |
348ced90 | 147 | |
8580d1f7 LP |
148 | ss_avail = ss.f_bsize * ss.f_bavail; |
149 | avail = LESS_BY(ss_avail, metrics->keep_free); | |
348ced90 | 150 | |
8580d1f7 LP |
151 | s->cached_space_limit = MIN(MAX(sum + avail, metrics->min_use), metrics->max_use); |
152 | s->cached_space_available = LESS_BY(s->cached_space_limit, sum); | |
153 | s->cached_space_timestamp = ts; | |
d025f1e4 | 154 | |
670b110c ZJS |
155 | if (verbose) { |
156 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
8580d1f7 | 157 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX], fb6[FORMAT_BYTES_MAX]; |
670b110c ZJS |
158 | |
159 | server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE, | |
8580d1f7 | 160 | "%s (%s) is currently using %s.\n" |
da2e288b LP |
161 | "Maximum allowed usage is set to %s.\n" |
162 | "Leaving at least %s free (of currently available %s of space).\n" | |
8580d1f7 LP |
163 | "Enforced usage limit is thus %s, of which %s are still available.", |
164 | name, path, | |
670b110c | 165 | format_bytes(fb1, sizeof(fb1), sum), |
8580d1f7 LP |
166 | format_bytes(fb2, sizeof(fb2), metrics->max_use), |
167 | format_bytes(fb3, sizeof(fb3), metrics->keep_free), | |
670b110c | 168 | format_bytes(fb4, sizeof(fb4), ss_avail), |
8580d1f7 LP |
169 | format_bytes(fb5, sizeof(fb5), s->cached_space_limit), |
170 | format_bytes(fb6, sizeof(fb6), s->cached_space_available)); | |
171 | } | |
172 | ||
173 | if (available) | |
174 | *available = s->cached_space_available; | |
175 | if (limit) | |
176 | *limit = s->cached_space_limit; | |
177 | ||
178 | return 1; | |
179 | } | |
180 | ||
181 | static int determine_space(Server *s, bool verbose, bool patch_min_use, uint64_t *available, uint64_t *limit) { | |
182 | JournalMetrics *metrics; | |
183 | const char *path, *name; | |
184 | ||
185 | assert(s); | |
186 | ||
187 | if (s->system_journal) { | |
188 | path = "/var/log/journal/"; | |
189 | metrics = &s->system_metrics; | |
190 | name = "System journal"; | |
191 | } else { | |
192 | path = "/run/log/journal/"; | |
193 | metrics = &s->runtime_metrics; | |
194 | name = "Runtime journal"; | |
670b110c ZJS |
195 | } |
196 | ||
8580d1f7 | 197 | return determine_space_for(s, metrics, path, name, verbose, patch_min_use, available, limit); |
d025f1e4 ZJS |
198 | } |
199 | ||
d025f1e4 ZJS |
200 | void server_fix_perms(Server *s, JournalFile *f, uid_t uid) { |
201 | int r; | |
202 | #ifdef HAVE_ACL | |
0fb39831 | 203 | _cleanup_(acl_freep) acl_t acl = NULL; |
d025f1e4 ZJS |
204 | acl_entry_t entry; |
205 | acl_permset_t permset; | |
206 | #endif | |
207 | ||
208 | assert(f); | |
209 | ||
4608af43 | 210 | r = fchmod(f->fd, 0640); |
d025f1e4 | 211 | if (r < 0) |
65089b82 | 212 | log_warning_errno(errno, "Failed to fix access mode on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
213 | |
214 | #ifdef HAVE_ACL | |
34c10968 | 215 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
216 | return; |
217 | ||
218 | acl = acl_get_fd(f->fd); | |
219 | if (!acl) { | |
56f64d95 | 220 | log_warning_errno(errno, "Failed to read ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
221 | return; |
222 | } | |
223 | ||
224 | r = acl_find_uid(acl, uid, &entry); | |
225 | if (r <= 0) { | |
226 | ||
227 | if (acl_create_entry(&acl, &entry) < 0 || | |
228 | acl_set_tag_type(entry, ACL_USER) < 0 || | |
229 | acl_set_qualifier(entry, &uid) < 0) { | |
56f64d95 | 230 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
0fb39831 | 231 | return; |
d025f1e4 ZJS |
232 | } |
233 | } | |
234 | ||
23ad4dd8 JAS |
235 | /* We do not recalculate the mask unconditionally here, |
236 | * so that the fchmod() mask above stays intact. */ | |
d025f1e4 | 237 | if (acl_get_permset(entry, &permset) < 0 || |
23ad4dd8 JAS |
238 | acl_add_perm(permset, ACL_READ) < 0 || |
239 | calc_acl_mask_if_needed(&acl) < 0) { | |
56f64d95 | 240 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
0fb39831 | 241 | return; |
d025f1e4 ZJS |
242 | } |
243 | ||
244 | if (acl_set_fd(f->fd, acl) < 0) | |
56f64d95 | 245 | log_warning_errno(errno, "Failed to set ACL on %s, ignoring: %m", f->path); |
d025f1e4 | 246 | |
d025f1e4 ZJS |
247 | #endif |
248 | } | |
249 | ||
250 | static JournalFile* find_journal(Server *s, uid_t uid) { | |
ed375beb | 251 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
252 | int r; |
253 | JournalFile *f; | |
254 | sd_id128_t machine; | |
255 | ||
256 | assert(s); | |
257 | ||
258 | /* We split up user logs only on /var, not on /run. If the | |
259 | * runtime file is open, we write to it exclusively, in order | |
260 | * to guarantee proper order as soon as we flush /run to | |
261 | * /var and close the runtime file. */ | |
262 | ||
263 | if (s->runtime_journal) | |
264 | return s->runtime_journal; | |
265 | ||
f7dc3ab9 | 266 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
267 | return s->system_journal; |
268 | ||
269 | r = sd_id128_get_machine(&machine); | |
270 | if (r < 0) | |
271 | return s->system_journal; | |
272 | ||
43cf8388 | 273 | f = ordered_hashmap_get(s->user_journals, UINT32_TO_PTR(uid)); |
d025f1e4 ZJS |
274 | if (f) |
275 | return f; | |
276 | ||
de0671ee ZJS |
277 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
278 | SD_ID128_FORMAT_VAL(machine), uid) < 0) | |
d025f1e4 ZJS |
279 | return s->system_journal; |
280 | ||
43cf8388 | 281 | while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { |
d025f1e4 | 282 | /* Too many open? Then let's close one */ |
43cf8388 | 283 | f = ordered_hashmap_steal_first(s->user_journals); |
d025f1e4 ZJS |
284 | assert(f); |
285 | journal_file_close(f); | |
286 | } | |
287 | ||
cbd67177 | 288 | r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f); |
d025f1e4 ZJS |
289 | if (r < 0) |
290 | return s->system_journal; | |
291 | ||
292 | server_fix_perms(s, f, uid); | |
293 | ||
43cf8388 | 294 | r = ordered_hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f); |
d025f1e4 ZJS |
295 | if (r < 0) { |
296 | journal_file_close(f); | |
297 | return s->system_journal; | |
298 | } | |
299 | ||
300 | return f; | |
301 | } | |
302 | ||
ea69bd41 LP |
303 | static int do_rotate( |
304 | Server *s, | |
305 | JournalFile **f, | |
306 | const char* name, | |
307 | bool seal, | |
308 | uint32_t uid) { | |
309 | ||
fc55baee ZJS |
310 | int r; |
311 | assert(s); | |
312 | ||
313 | if (!*f) | |
314 | return -EINVAL; | |
315 | ||
316 | r = journal_file_rotate(f, s->compress, seal); | |
317 | if (r < 0) | |
318 | if (*f) | |
ea69bd41 | 319 | log_error_errno(r, "Failed to rotate %s: %m", (*f)->path); |
fc55baee | 320 | else |
ea69bd41 | 321 | log_error_errno(r, "Failed to create new %s journal: %m", name); |
fc55baee ZJS |
322 | else |
323 | server_fix_perms(s, *f, uid); | |
2678031a | 324 | |
fc55baee ZJS |
325 | return r; |
326 | } | |
327 | ||
d025f1e4 ZJS |
328 | void server_rotate(Server *s) { |
329 | JournalFile *f; | |
330 | void *k; | |
331 | Iterator i; | |
332 | int r; | |
333 | ||
334 | log_debug("Rotating..."); | |
335 | ||
8580d1f7 LP |
336 | (void) do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
337 | (void) do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 | 338 | |
43cf8388 | 339 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
fc55baee ZJS |
340 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k)); |
341 | if (r >= 0) | |
43cf8388 | 342 | ordered_hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
343 | else if (!f) |
344 | /* Old file has been closed and deallocated */ | |
43cf8388 | 345 | ordered_hashmap_remove(s->user_journals, k); |
d025f1e4 ZJS |
346 | } |
347 | } | |
348 | ||
26687bf8 OS |
349 | void server_sync(Server *s) { |
350 | JournalFile *f; | |
351 | void *k; | |
352 | Iterator i; | |
353 | int r; | |
354 | ||
26687bf8 OS |
355 | if (s->system_journal) { |
356 | r = journal_file_set_offline(s->system_journal); | |
357 | if (r < 0) | |
65089b82 | 358 | log_warning_errno(r, "Failed to sync system journal, ignoring: %m"); |
26687bf8 OS |
359 | } |
360 | ||
43cf8388 | 361 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
26687bf8 OS |
362 | r = journal_file_set_offline(f); |
363 | if (r < 0) | |
65089b82 | 364 | log_warning_errno(r, "Failed to sync user journal, ignoring: %m"); |
26687bf8 OS |
365 | } |
366 | ||
f9a810be LP |
367 | if (s->sync_event_source) { |
368 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
369 | if (r < 0) | |
da927ba9 | 370 | log_error_errno(r, "Failed to disable sync timer source: %m"); |
f9a810be | 371 | } |
26687bf8 OS |
372 | |
373 | s->sync_scheduled = false; | |
374 | } | |
375 | ||
ea69bd41 LP |
376 | static void do_vacuum( |
377 | Server *s, | |
ea69bd41 | 378 | JournalFile *f, |
8580d1f7 LP |
379 | JournalMetrics *metrics, |
380 | const char *path, | |
381 | const char *name, | |
382 | bool verbose, | |
383 | bool patch_min_use) { | |
ea69bd41 LP |
384 | |
385 | const char *p; | |
8580d1f7 | 386 | uint64_t limit; |
63c8666b ZJS |
387 | int r; |
388 | ||
8580d1f7 LP |
389 | assert(s); |
390 | assert(metrics); | |
391 | assert(path); | |
392 | assert(name); | |
393 | ||
63c8666b ZJS |
394 | if (!f) |
395 | return; | |
396 | ||
8580d1f7 LP |
397 | p = strjoina(path, SERVER_MACHINE_ID(s)); |
398 | ||
399 | limit = metrics->max_use; | |
400 | (void) determine_space_for(s, metrics, path, name, verbose, patch_min_use, NULL, &limit); | |
401 | ||
402 | r = journal_directory_vacuum(p, limit, metrics->n_max_files, s->max_retention_usec, &s->oldest_file_usec, verbose); | |
63c8666b | 403 | if (r < 0 && r != -ENOENT) |
8580d1f7 | 404 | log_warning_errno(r, "Failed to vacuum %s, ignoring: %m", p); |
63c8666b ZJS |
405 | } |
406 | ||
8580d1f7 LP |
407 | int server_vacuum(Server *s, bool verbose, bool patch_min_use) { |
408 | assert(s); | |
d025f1e4 ZJS |
409 | |
410 | log_debug("Vacuuming..."); | |
411 | ||
412 | s->oldest_file_usec = 0; | |
413 | ||
8580d1f7 LP |
414 | do_vacuum(s, s->system_journal, &s->system_metrics, "/var/log/journal/", "System journal", verbose, patch_min_use); |
415 | do_vacuum(s, s->runtime_journal, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", verbose, patch_min_use); | |
d025f1e4 | 416 | |
8580d1f7 LP |
417 | s->cached_space_limit = 0; |
418 | s->cached_space_available = 0; | |
419 | s->cached_space_timestamp = 0; | |
d025f1e4 | 420 | |
8580d1f7 | 421 | return 0; |
d025f1e4 ZJS |
422 | } |
423 | ||
0c24bb23 LP |
424 | static void server_cache_machine_id(Server *s) { |
425 | sd_id128_t id; | |
426 | int r; | |
427 | ||
428 | assert(s); | |
429 | ||
430 | r = sd_id128_get_machine(&id); | |
431 | if (r < 0) | |
432 | return; | |
433 | ||
434 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
435 | } | |
436 | ||
437 | static void server_cache_boot_id(Server *s) { | |
438 | sd_id128_t id; | |
439 | int r; | |
440 | ||
441 | assert(s); | |
442 | ||
443 | r = sd_id128_get_boot(&id); | |
444 | if (r < 0) | |
445 | return; | |
446 | ||
447 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
448 | } | |
449 | ||
450 | static void server_cache_hostname(Server *s) { | |
451 | _cleanup_free_ char *t = NULL; | |
452 | char *x; | |
453 | ||
454 | assert(s); | |
455 | ||
456 | t = gethostname_malloc(); | |
457 | if (!t) | |
458 | return; | |
459 | ||
460 | x = strappend("_HOSTNAME=", t); | |
461 | if (!x) | |
462 | return; | |
463 | ||
464 | free(s->hostname_field); | |
465 | s->hostname_field = x; | |
466 | } | |
467 | ||
8531ae70 | 468 | static bool shall_try_append_again(JournalFile *f, int r) { |
d025f1e4 ZJS |
469 | |
470 | /* -E2BIG Hit configured limit | |
471 | -EFBIG Hit fs limit | |
472 | -EDQUOT Quota limit hit | |
473 | -ENOSPC Disk full | |
fa6ac760 | 474 | -EIO I/O error of some kind (mmap) |
d025f1e4 ZJS |
475 | -EHOSTDOWN Other machine |
476 | -EBUSY Unclean shutdown | |
477 | -EPROTONOSUPPORT Unsupported feature | |
478 | -EBADMSG Corrupted | |
479 | -ENODATA Truncated | |
2678031a LP |
480 | -ESHUTDOWN Already archived |
481 | -EIDRM Journal file has been deleted */ | |
d025f1e4 ZJS |
482 | |
483 | if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC) | |
484 | log_debug("%s: Allocation limit reached, rotating.", f->path); | |
485 | else if (r == -EHOSTDOWN) | |
486 | log_info("%s: Journal file from other machine, rotating.", f->path); | |
487 | else if (r == -EBUSY) | |
488 | log_info("%s: Unclean shutdown, rotating.", f->path); | |
489 | else if (r == -EPROTONOSUPPORT) | |
490 | log_info("%s: Unsupported feature, rotating.", f->path); | |
491 | else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN) | |
492 | log_warning("%s: Journal file corrupted, rotating.", f->path); | |
fa6ac760 LP |
493 | else if (r == -EIO) |
494 | log_warning("%s: IO error, rotating.", f->path); | |
2678031a LP |
495 | else if (r == -EIDRM) |
496 | log_warning("%s: Journal file has been deleted, rotating.", f->path); | |
d025f1e4 ZJS |
497 | else |
498 | return false; | |
499 | ||
500 | return true; | |
501 | } | |
502 | ||
d07f7b9e | 503 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) { |
d025f1e4 ZJS |
504 | JournalFile *f; |
505 | bool vacuumed = false; | |
506 | int r; | |
507 | ||
508 | assert(s); | |
509 | assert(iovec); | |
510 | assert(n > 0); | |
511 | ||
512 | f = find_journal(s, uid); | |
513 | if (!f) | |
514 | return; | |
515 | ||
516 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
517 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
518 | server_rotate(s); | |
8580d1f7 | 519 | server_vacuum(s, false, false); |
d025f1e4 ZJS |
520 | vacuumed = true; |
521 | ||
522 | f = find_journal(s, uid); | |
523 | if (!f) | |
524 | return; | |
525 | } | |
526 | ||
527 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
26687bf8 | 528 | if (r >= 0) { |
d07f7b9e | 529 | server_schedule_sync(s, priority); |
d025f1e4 | 530 | return; |
26687bf8 | 531 | } |
d025f1e4 ZJS |
532 | |
533 | if (vacuumed || !shall_try_append_again(f, r)) { | |
8266e1c0 | 534 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); |
d025f1e4 ZJS |
535 | return; |
536 | } | |
537 | ||
538 | server_rotate(s); | |
8580d1f7 | 539 | server_vacuum(s, false, false); |
d025f1e4 ZJS |
540 | |
541 | f = find_journal(s, uid); | |
542 | if (!f) | |
543 | return; | |
544 | ||
545 | log_debug("Retrying write."); | |
546 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
8266e1c0 LP |
547 | if (r < 0) |
548 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); | |
549 | else | |
d07f7b9e | 550 | server_schedule_sync(s, priority); |
d025f1e4 ZJS |
551 | } |
552 | ||
553 | static void dispatch_message_real( | |
554 | Server *s, | |
555 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
556 | const struct ucred *ucred, |
557 | const struct timeval *tv, | |
d025f1e4 | 558 | const char *label, size_t label_len, |
968f3196 | 559 | const char *unit_id, |
d07f7b9e | 560 | int priority, |
968f3196 | 561 | pid_t object_pid) { |
d025f1e4 | 562 | |
968f3196 | 563 | char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)], |
ae018d9b LP |
564 | uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)], |
565 | gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)], | |
566 | owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)], | |
d3789917 | 567 | source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)], |
968f3196 ZJS |
568 | o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)], |
569 | o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)], | |
570 | o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)]; | |
571 | uid_t object_uid; | |
572 | gid_t object_gid; | |
968f3196 | 573 | char *x; |
d025f1e4 | 574 | int r; |
ae018d9b | 575 | char *t, *c; |
82499507 LP |
576 | uid_t realuid = 0, owner = 0, journal_uid; |
577 | bool owner_valid = false; | |
ae018d9b | 578 | #ifdef HAVE_AUDIT |
968f3196 ZJS |
579 | char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], |
580 | audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)], | |
581 | o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], | |
582 | o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)]; | |
ae018d9b LP |
583 | |
584 | uint32_t audit; | |
585 | uid_t loginuid; | |
586 | #endif | |
d025f1e4 ZJS |
587 | |
588 | assert(s); | |
589 | assert(iovec); | |
590 | assert(n > 0); | |
968f3196 | 591 | assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m); |
d025f1e4 ZJS |
592 | |
593 | if (ucred) { | |
d025f1e4 ZJS |
594 | realuid = ucred->uid; |
595 | ||
de0671ee | 596 | sprintf(pid, "_PID="PID_FMT, ucred->pid); |
c2457105 | 597 | IOVEC_SET_STRING(iovec[n++], pid); |
d025f1e4 | 598 | |
de0671ee | 599 | sprintf(uid, "_UID="UID_FMT, ucred->uid); |
c2457105 | 600 | IOVEC_SET_STRING(iovec[n++], uid); |
d025f1e4 | 601 | |
de0671ee | 602 | sprintf(gid, "_GID="GID_FMT, ucred->gid); |
c2457105 | 603 | IOVEC_SET_STRING(iovec[n++], gid); |
d025f1e4 ZJS |
604 | |
605 | r = get_process_comm(ucred->pid, &t); | |
606 | if (r >= 0) { | |
63c372cb | 607 | x = strjoina("_COMM=", t); |
d025f1e4 | 608 | free(t); |
968f3196 | 609 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
610 | } |
611 | ||
612 | r = get_process_exe(ucred->pid, &t); | |
613 | if (r >= 0) { | |
63c372cb | 614 | x = strjoina("_EXE=", t); |
d025f1e4 | 615 | free(t); |
968f3196 | 616 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
617 | } |
618 | ||
9bdbc2e2 | 619 | r = get_process_cmdline(ucred->pid, 0, false, &t); |
d025f1e4 | 620 | if (r >= 0) { |
63c372cb | 621 | x = strjoina("_CMDLINE=", t); |
d025f1e4 | 622 | free(t); |
3a832116 SL |
623 | IOVEC_SET_STRING(iovec[n++], x); |
624 | } | |
625 | ||
626 | r = get_process_capeff(ucred->pid, &t); | |
627 | if (r >= 0) { | |
63c372cb | 628 | x = strjoina("_CAP_EFFECTIVE=", t); |
3a832116 | 629 | free(t); |
968f3196 | 630 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
631 | } |
632 | ||
0a20e3c1 | 633 | #ifdef HAVE_AUDIT |
d025f1e4 | 634 | r = audit_session_from_pid(ucred->pid, &audit); |
ae018d9b | 635 | if (r >= 0) { |
de0671ee | 636 | sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit); |
ae018d9b LP |
637 | IOVEC_SET_STRING(iovec[n++], audit_session); |
638 | } | |
d025f1e4 ZJS |
639 | |
640 | r = audit_loginuid_from_pid(ucred->pid, &loginuid); | |
7027ff61 | 641 | if (r >= 0) { |
de0671ee | 642 | sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid); |
ae018d9b | 643 | IOVEC_SET_STRING(iovec[n++], audit_loginuid); |
d025f1e4 | 644 | } |
ae018d9b | 645 | #endif |
d025f1e4 | 646 | |
e9174f29 | 647 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c); |
7027ff61 | 648 | if (r >= 0) { |
968f3196 ZJS |
649 | char *session = NULL; |
650 | ||
63c372cb | 651 | x = strjoina("_SYSTEMD_CGROUP=", c); |
968f3196 | 652 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 | 653 | |
ae018d9b LP |
654 | r = cg_path_get_session(c, &t); |
655 | if (r >= 0) { | |
63c372cb | 656 | session = strjoina("_SYSTEMD_SESSION=", t); |
ae018d9b | 657 | free(t); |
d025f1e4 | 658 | IOVEC_SET_STRING(iovec[n++], session); |
ae018d9b LP |
659 | } |
660 | ||
661 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
662 | owner_valid = true; | |
d025f1e4 | 663 | |
de0671ee | 664 | sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner); |
d025f1e4 | 665 | IOVEC_SET_STRING(iovec[n++], owner_uid); |
ae018d9b | 666 | } |
d025f1e4 | 667 | |
ae018d9b | 668 | if (cg_path_get_unit(c, &t) >= 0) { |
63c372cb | 669 | x = strjoina("_SYSTEMD_UNIT=", t); |
ae018d9b | 670 | free(t); |
19cace37 LP |
671 | IOVEC_SET_STRING(iovec[n++], x); |
672 | } else if (unit_id && !session) { | |
63c372cb | 673 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
19cace37 LP |
674 | IOVEC_SET_STRING(iovec[n++], x); |
675 | } | |
676 | ||
677 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 678 | x = strjoina("_SYSTEMD_USER_UNIT=", t); |
ae018d9b | 679 | free(t); |
968f3196 | 680 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 681 | } else if (unit_id && session) { |
63c372cb | 682 | x = strjoina("_SYSTEMD_USER_UNIT=", unit_id); |
19cace37 LP |
683 | IOVEC_SET_STRING(iovec[n++], x); |
684 | } | |
ae018d9b | 685 | |
0a244b8e | 686 | if (cg_path_get_slice(c, &t) >= 0) { |
63c372cb | 687 | x = strjoina("_SYSTEMD_SLICE=", t); |
0a244b8e LP |
688 | free(t); |
689 | IOVEC_SET_STRING(iovec[n++], x); | |
690 | } | |
691 | ||
ae018d9b | 692 | free(c); |
2d43b190 | 693 | } else if (unit_id) { |
63c372cb | 694 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
2d43b190 | 695 | IOVEC_SET_STRING(iovec[n++], x); |
ef1673d1 | 696 | } |
d025f1e4 | 697 | |
d025f1e4 | 698 | #ifdef HAVE_SELINUX |
6baa7db0 | 699 | if (mac_selinux_use()) { |
d682b3a7 | 700 | if (label) { |
f8294e41 | 701 | x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1); |
ae018d9b | 702 | |
d682b3a7 LP |
703 | *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0; |
704 | IOVEC_SET_STRING(iovec[n++], x); | |
705 | } else { | |
706 | security_context_t con; | |
d025f1e4 | 707 | |
d682b3a7 | 708 | if (getpidcon(ucred->pid, &con) >= 0) { |
63c372cb | 709 | x = strjoina("_SELINUX_CONTEXT=", con); |
e7ff4e7f | 710 | |
d682b3a7 LP |
711 | freecon(con); |
712 | IOVEC_SET_STRING(iovec[n++], x); | |
713 | } | |
d025f1e4 ZJS |
714 | } |
715 | } | |
716 | #endif | |
717 | } | |
968f3196 ZJS |
718 | assert(n <= m); |
719 | ||
720 | if (object_pid) { | |
721 | r = get_process_uid(object_pid, &object_uid); | |
722 | if (r >= 0) { | |
de0671ee | 723 | sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid); |
968f3196 ZJS |
724 | IOVEC_SET_STRING(iovec[n++], o_uid); |
725 | } | |
726 | ||
727 | r = get_process_gid(object_pid, &object_gid); | |
728 | if (r >= 0) { | |
de0671ee | 729 | sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid); |
968f3196 ZJS |
730 | IOVEC_SET_STRING(iovec[n++], o_gid); |
731 | } | |
732 | ||
733 | r = get_process_comm(object_pid, &t); | |
734 | if (r >= 0) { | |
63c372cb | 735 | x = strjoina("OBJECT_COMM=", t); |
968f3196 ZJS |
736 | free(t); |
737 | IOVEC_SET_STRING(iovec[n++], x); | |
738 | } | |
739 | ||
740 | r = get_process_exe(object_pid, &t); | |
741 | if (r >= 0) { | |
63c372cb | 742 | x = strjoina("OBJECT_EXE=", t); |
968f3196 ZJS |
743 | free(t); |
744 | IOVEC_SET_STRING(iovec[n++], x); | |
745 | } | |
746 | ||
747 | r = get_process_cmdline(object_pid, 0, false, &t); | |
748 | if (r >= 0) { | |
63c372cb | 749 | x = strjoina("OBJECT_CMDLINE=", t); |
968f3196 ZJS |
750 | free(t); |
751 | IOVEC_SET_STRING(iovec[n++], x); | |
752 | } | |
753 | ||
754 | #ifdef HAVE_AUDIT | |
755 | r = audit_session_from_pid(object_pid, &audit); | |
756 | if (r >= 0) { | |
de0671ee | 757 | sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit); |
968f3196 ZJS |
758 | IOVEC_SET_STRING(iovec[n++], o_audit_session); |
759 | } | |
760 | ||
761 | r = audit_loginuid_from_pid(object_pid, &loginuid); | |
762 | if (r >= 0) { | |
de0671ee | 763 | sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid); |
968f3196 ZJS |
764 | IOVEC_SET_STRING(iovec[n++], o_audit_loginuid); |
765 | } | |
766 | #endif | |
767 | ||
e9174f29 | 768 | r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c); |
968f3196 | 769 | if (r >= 0) { |
63c372cb | 770 | x = strjoina("OBJECT_SYSTEMD_CGROUP=", c); |
968f3196 ZJS |
771 | IOVEC_SET_STRING(iovec[n++], x); |
772 | ||
773 | r = cg_path_get_session(c, &t); | |
774 | if (r >= 0) { | |
63c372cb | 775 | x = strjoina("OBJECT_SYSTEMD_SESSION=", t); |
968f3196 ZJS |
776 | free(t); |
777 | IOVEC_SET_STRING(iovec[n++], x); | |
778 | } | |
779 | ||
780 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
de0671ee | 781 | sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner); |
968f3196 ZJS |
782 | IOVEC_SET_STRING(iovec[n++], o_owner_uid); |
783 | } | |
784 | ||
785 | if (cg_path_get_unit(c, &t) >= 0) { | |
63c372cb | 786 | x = strjoina("OBJECT_SYSTEMD_UNIT=", t); |
968f3196 | 787 | free(t); |
19cace37 LP |
788 | IOVEC_SET_STRING(iovec[n++], x); |
789 | } | |
790 | ||
791 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 792 | x = strjoina("OBJECT_SYSTEMD_USER_UNIT=", t); |
968f3196 | 793 | free(t); |
968f3196 | 794 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 795 | } |
968f3196 ZJS |
796 | |
797 | free(c); | |
798 | } | |
799 | } | |
800 | assert(n <= m); | |
d025f1e4 ZJS |
801 | |
802 | if (tv) { | |
ae018d9b | 803 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv)); |
a5693989 | 804 | IOVEC_SET_STRING(iovec[n++], source_time); |
d025f1e4 ZJS |
805 | } |
806 | ||
807 | /* Note that strictly speaking storing the boot id here is | |
808 | * redundant since the entry includes this in-line | |
809 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 LP |
810 | if (!isempty(s->boot_id_field)) |
811 | IOVEC_SET_STRING(iovec[n++], s->boot_id_field); | |
d025f1e4 | 812 | |
0c24bb23 LP |
813 | if (!isempty(s->machine_id_field)) |
814 | IOVEC_SET_STRING(iovec[n++], s->machine_id_field); | |
d025f1e4 | 815 | |
0c24bb23 LP |
816 | if (!isempty(s->hostname_field)) |
817 | IOVEC_SET_STRING(iovec[n++], s->hostname_field); | |
d025f1e4 ZJS |
818 | |
819 | assert(n <= m); | |
820 | ||
da499392 | 821 | if (s->split_mode == SPLIT_UID && realuid > 0) |
40adcda8 | 822 | /* Split up strictly by any UID */ |
759c945a | 823 | journal_uid = realuid; |
82499507 | 824 | else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0) |
edc3797f LP |
825 | /* Split up by login UIDs. We do this only if the |
826 | * realuid is not root, in order not to accidentally | |
827 | * leak privileged information to the user that is | |
828 | * logged by a privileged process that is part of an | |
7517e174 | 829 | * unprivileged session. */ |
8a0889df | 830 | journal_uid = owner; |
da499392 KS |
831 | else |
832 | journal_uid = 0; | |
759c945a | 833 | |
d07f7b9e | 834 | write_to_journal(s, journal_uid, iovec, n, priority); |
d025f1e4 ZJS |
835 | } |
836 | ||
837 | void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) { | |
838 | char mid[11 + 32 + 1]; | |
839 | char buffer[16 + LINE_MAX + 1]; | |
b6fa2555 | 840 | struct iovec iovec[N_IOVEC_META_FIELDS + 6]; |
d025f1e4 ZJS |
841 | int n = 0; |
842 | va_list ap; | |
b92bea5d | 843 | struct ucred ucred = {}; |
d025f1e4 ZJS |
844 | |
845 | assert(s); | |
846 | assert(format); | |
847 | ||
b6fa2555 EV |
848 | IOVEC_SET_STRING(iovec[n++], "SYSLOG_FACILITY=3"); |
849 | IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=systemd-journald"); | |
850 | ||
d025f1e4 ZJS |
851 | IOVEC_SET_STRING(iovec[n++], "PRIORITY=6"); |
852 | IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver"); | |
853 | ||
854 | memcpy(buffer, "MESSAGE=", 8); | |
855 | va_start(ap, format); | |
856 | vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap); | |
857 | va_end(ap); | |
d025f1e4 ZJS |
858 | IOVEC_SET_STRING(iovec[n++], buffer); |
859 | ||
860 | if (!sd_id128_equal(message_id, SD_ID128_NULL)) { | |
e2cc6eca | 861 | snprintf(mid, sizeof(mid), LOG_MESSAGE_ID(message_id)); |
d025f1e4 ZJS |
862 | IOVEC_SET_STRING(iovec[n++], mid); |
863 | } | |
864 | ||
d025f1e4 ZJS |
865 | ucred.pid = getpid(); |
866 | ucred.uid = getuid(); | |
867 | ucred.gid = getgid(); | |
868 | ||
d07f7b9e | 869 | dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL, LOG_INFO, 0); |
d025f1e4 ZJS |
870 | } |
871 | ||
872 | void server_dispatch_message( | |
873 | Server *s, | |
874 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
875 | const struct ucred *ucred, |
876 | const struct timeval *tv, | |
d025f1e4 ZJS |
877 | const char *label, size_t label_len, |
878 | const char *unit_id, | |
968f3196 ZJS |
879 | int priority, |
880 | pid_t object_pid) { | |
d025f1e4 | 881 | |
7027ff61 | 882 | int rl, r; |
7fd1b19b | 883 | _cleanup_free_ char *path = NULL; |
8580d1f7 | 884 | uint64_t available = 0; |
db91ea32 | 885 | char *c; |
d025f1e4 ZJS |
886 | |
887 | assert(s); | |
888 | assert(iovec || n == 0); | |
889 | ||
890 | if (n == 0) | |
891 | return; | |
892 | ||
893 | if (LOG_PRI(priority) > s->max_level_store) | |
894 | return; | |
895 | ||
2f5df74a HHPF |
896 | /* Stop early in case the information will not be stored |
897 | * in a journal. */ | |
898 | if (s->storage == STORAGE_NONE) | |
899 | return; | |
900 | ||
d025f1e4 ZJS |
901 | if (!ucred) |
902 | goto finish; | |
903 | ||
e9174f29 | 904 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path); |
7027ff61 | 905 | if (r < 0) |
d025f1e4 ZJS |
906 | goto finish; |
907 | ||
908 | /* example: /user/lennart/3/foobar | |
909 | * /system/dbus.service/foobar | |
910 | * | |
911 | * So let's cut of everything past the third /, since that is | |
912 | * where user directories start */ | |
913 | ||
914 | c = strchr(path, '/'); | |
915 | if (c) { | |
916 | c = strchr(c+1, '/'); | |
917 | if (c) { | |
918 | c = strchr(c+1, '/'); | |
919 | if (c) | |
920 | *c = 0; | |
921 | } | |
922 | } | |
923 | ||
8580d1f7 LP |
924 | (void) determine_space(s, false, false, &available, NULL); |
925 | rl = journal_rate_limit_test(s->rate_limit, path, priority & LOG_PRIMASK, available); | |
db91ea32 | 926 | if (rl == 0) |
d025f1e4 | 927 | return; |
d025f1e4 ZJS |
928 | |
929 | /* Write a suppression message if we suppressed something */ | |
930 | if (rl > 1) | |
db91ea32 ZJS |
931 | server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, |
932 | "Suppressed %u messages from %s", rl - 1, path); | |
d025f1e4 ZJS |
933 | |
934 | finish: | |
d07f7b9e | 935 | dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id, priority, object_pid); |
d025f1e4 ZJS |
936 | } |
937 | ||
938 | ||
caa2f4c0 | 939 | static int system_journal_open(Server *s, bool flush_requested) { |
84267e40 | 940 | const char *fn; |
09eba4d4 | 941 | int r = 0; |
d025f1e4 ZJS |
942 | |
943 | if (!s->system_journal && | |
944 | (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) && | |
caa2f4c0 ZJS |
945 | (flush_requested |
946 | || access("/run/systemd/journal/flushed", F_OK) >= 0)) { | |
d025f1e4 ZJS |
947 | |
948 | /* If in auto mode: first try to create the machine | |
949 | * path, but not the prefix. | |
950 | * | |
951 | * If in persistent mode: create /var/log/journal and | |
952 | * the machine path */ | |
953 | ||
954 | if (s->storage == STORAGE_PERSISTENT) | |
ac892057 | 955 | (void) mkdir_p("/var/log/journal/", 0755); |
d025f1e4 | 956 | |
8580d1f7 | 957 | fn = strjoina("/var/log/journal/", SERVER_MACHINE_ID(s)); |
d025f1e4 | 958 | (void) mkdir(fn, 0755); |
d025f1e4 | 959 | |
63c372cb | 960 | fn = strjoina(fn, "/system.journal"); |
d025f1e4 | 961 | r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &s->system_journal); |
8580d1f7 | 962 | if (r >= 0) { |
d025f1e4 | 963 | server_fix_perms(s, s->system_journal, 0); |
8580d1f7 LP |
964 | (void) determine_space_for(s, &s->system_metrics, "/var/log/journal/", "System journal", true, true, NULL, NULL); |
965 | } else if (r < 0) { | |
433dd100 | 966 | if (r != -ENOENT && r != -EROFS) |
da927ba9 | 967 | log_warning_errno(r, "Failed to open system journal: %m"); |
e40ec7ae | 968 | |
433dd100 LN |
969 | r = 0; |
970 | } | |
d025f1e4 ZJS |
971 | } |
972 | ||
973 | if (!s->runtime_journal && | |
974 | (s->storage != STORAGE_NONE)) { | |
975 | ||
8580d1f7 | 976 | fn = strjoina("/run/log/journal/", SERVER_MACHINE_ID(s), "/system.journal"); |
d025f1e4 ZJS |
977 | |
978 | if (s->system_journal) { | |
979 | ||
980 | /* Try to open the runtime journal, but only | |
981 | * if it already exists, so that we can flush | |
982 | * it into the system journal */ | |
983 | ||
984 | r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); | |
d025f1e4 ZJS |
985 | if (r < 0) { |
986 | if (r != -ENOENT) | |
da927ba9 | 987 | log_warning_errno(r, "Failed to open runtime journal: %m"); |
d025f1e4 ZJS |
988 | |
989 | r = 0; | |
990 | } | |
991 | ||
992 | } else { | |
993 | ||
994 | /* OK, we really need the runtime journal, so create | |
995 | * it if necessary. */ | |
996 | ||
fc1d70af LP |
997 | (void) mkdir("/run/log", 0755); |
998 | (void) mkdir("/run/log/journal", 0755); | |
999 | (void) mkdir_parents(fn, 0750); | |
1000 | ||
d025f1e4 | 1001 | r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); |
23bbb0de MS |
1002 | if (r < 0) |
1003 | return log_error_errno(r, "Failed to open runtime journal: %m"); | |
d025f1e4 ZJS |
1004 | } |
1005 | ||
8580d1f7 | 1006 | if (s->runtime_journal) { |
d025f1e4 | 1007 | server_fix_perms(s, s->runtime_journal, 0); |
8580d1f7 LP |
1008 | (void) determine_space_for(s, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", true, true, NULL, NULL); |
1009 | } | |
d025f1e4 ZJS |
1010 | } |
1011 | ||
1012 | return r; | |
1013 | } | |
1014 | ||
1015 | int server_flush_to_var(Server *s) { | |
d025f1e4 ZJS |
1016 | sd_id128_t machine; |
1017 | sd_journal *j = NULL; | |
fbb63411 LP |
1018 | char ts[FORMAT_TIMESPAN_MAX]; |
1019 | usec_t start; | |
1020 | unsigned n = 0; | |
1021 | int r; | |
d025f1e4 ZJS |
1022 | |
1023 | assert(s); | |
1024 | ||
1025 | if (s->storage != STORAGE_AUTO && | |
1026 | s->storage != STORAGE_PERSISTENT) | |
1027 | return 0; | |
1028 | ||
1029 | if (!s->runtime_journal) | |
1030 | return 0; | |
1031 | ||
8580d1f7 | 1032 | (void) system_journal_open(s, true); |
d025f1e4 ZJS |
1033 | |
1034 | if (!s->system_journal) | |
1035 | return 0; | |
1036 | ||
1037 | log_debug("Flushing to /var..."); | |
1038 | ||
fbb63411 LP |
1039 | start = now(CLOCK_MONOTONIC); |
1040 | ||
d025f1e4 | 1041 | r = sd_id128_get_machine(&machine); |
00a16861 | 1042 | if (r < 0) |
d025f1e4 | 1043 | return r; |
d025f1e4 ZJS |
1044 | |
1045 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
23bbb0de MS |
1046 | if (r < 0) |
1047 | return log_error_errno(r, "Failed to read runtime journal: %m"); | |
d025f1e4 | 1048 | |
93b73b06 LP |
1049 | sd_journal_set_data_threshold(j, 0); |
1050 | ||
d025f1e4 ZJS |
1051 | SD_JOURNAL_FOREACH(j) { |
1052 | Object *o = NULL; | |
1053 | JournalFile *f; | |
1054 | ||
1055 | f = j->current_file; | |
1056 | assert(f && f->current_offset > 0); | |
1057 | ||
fbb63411 LP |
1058 | n++; |
1059 | ||
d025f1e4 ZJS |
1060 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1061 | if (r < 0) { | |
da927ba9 | 1062 | log_error_errno(r, "Can't read entry: %m"); |
d025f1e4 ZJS |
1063 | goto finish; |
1064 | } | |
1065 | ||
1066 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1067 | if (r >= 0) | |
1068 | continue; | |
1069 | ||
1070 | if (!shall_try_append_again(s->system_journal, r)) { | |
da927ba9 | 1071 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1072 | goto finish; |
1073 | } | |
1074 | ||
1075 | server_rotate(s); | |
8580d1f7 | 1076 | server_vacuum(s, false, false); |
d025f1e4 | 1077 | |
253f59df LP |
1078 | if (!s->system_journal) { |
1079 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1080 | r = -EIO; | |
1081 | goto finish; | |
1082 | } | |
1083 | ||
d025f1e4 ZJS |
1084 | log_debug("Retrying write."); |
1085 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1086 | if (r < 0) { | |
da927ba9 | 1087 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1088 | goto finish; |
1089 | } | |
1090 | } | |
1091 | ||
804ae586 LP |
1092 | r = 0; |
1093 | ||
d025f1e4 ZJS |
1094 | finish: |
1095 | journal_file_post_change(s->system_journal); | |
1096 | ||
804ae586 | 1097 | s->runtime_journal = journal_file_close(s->runtime_journal); |
d025f1e4 ZJS |
1098 | |
1099 | if (r >= 0) | |
c6878637 | 1100 | (void) rm_rf("/run/log/journal", REMOVE_ROOT); |
d025f1e4 | 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 | 1110 | Server *s = userdata; |
a315ac4e LP |
1111 | struct ucred *ucred = NULL; |
1112 | struct timeval *tv = NULL; | |
1113 | struct cmsghdr *cmsg; | |
1114 | char *label = NULL; | |
1115 | size_t label_len = 0, m; | |
1116 | struct iovec iovec; | |
1117 | ssize_t n; | |
1118 | int *fds = NULL, v = 0; | |
1119 | unsigned n_fds = 0; | |
1120 | ||
1121 | union { | |
1122 | struct cmsghdr cmsghdr; | |
1123 | ||
1124 | /* We use NAME_MAX space for the SELinux label | |
1125 | * here. The kernel currently enforces no | |
1126 | * limit, but according to suggestions from | |
1127 | * the SELinux people this will change and it | |
1128 | * will probably be identical to NAME_MAX. For | |
1129 | * now we use that, but this should be updated | |
1130 | * one day when the final limit is known. */ | |
1131 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1132 | CMSG_SPACE(sizeof(struct timeval)) + | |
1133 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1134 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1135 | } control = {}; | |
1136 | ||
1137 | union sockaddr_union sa = {}; | |
1138 | ||
1139 | struct msghdr msghdr = { | |
1140 | .msg_iov = &iovec, | |
1141 | .msg_iovlen = 1, | |
1142 | .msg_control = &control, | |
1143 | .msg_controllen = sizeof(control), | |
1144 | .msg_name = &sa, | |
1145 | .msg_namelen = sizeof(sa), | |
1146 | }; | |
f9a810be | 1147 | |
d025f1e4 | 1148 | assert(s); |
875c2e22 | 1149 | assert(fd == s->native_fd || fd == s->syslog_fd || fd == s->audit_fd); |
f9a810be LP |
1150 | |
1151 | if (revents != EPOLLIN) { | |
1152 | log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents); | |
1153 | return -EIO; | |
1154 | } | |
1155 | ||
a315ac4e LP |
1156 | /* Try to get the right size, if we can. (Not all |
1157 | * sockets support SIOCINQ, hence we just try, but | |
1158 | * don't rely on it. */ | |
1159 | (void) ioctl(fd, SIOCINQ, &v); | |
d025f1e4 | 1160 | |
a315ac4e LP |
1161 | /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */ |
1162 | m = PAGE_ALIGN(MAX3((size_t) v + 1, | |
1163 | (size_t) LINE_MAX, | |
1164 | ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1); | |
d025f1e4 | 1165 | |
a315ac4e LP |
1166 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m)) |
1167 | return log_oom(); | |
875c2e22 | 1168 | |
a315ac4e LP |
1169 | iovec.iov_base = s->buffer; |
1170 | iovec.iov_len = s->buffer_size - 1; /* Leave room for trailing NUL we add later */ | |
d025f1e4 | 1171 | |
a315ac4e LP |
1172 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1173 | if (n < 0) { | |
1174 | if (errno == EINTR || errno == EAGAIN) | |
1175 | return 0; | |
875c2e22 | 1176 | |
a315ac4e LP |
1177 | return log_error_errno(errno, "recvmsg() failed: %m"); |
1178 | } | |
875c2e22 | 1179 | |
a315ac4e LP |
1180 | CMSG_FOREACH(cmsg, &msghdr) { |
1181 | ||
1182 | if (cmsg->cmsg_level == SOL_SOCKET && | |
1183 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1184 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) | |
1185 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1186 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1187 | cmsg->cmsg_type == SCM_SECURITY) { | |
1188 | label = (char*) CMSG_DATA(cmsg); | |
1189 | label_len = cmsg->cmsg_len - CMSG_LEN(0); | |
1190 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1191 | cmsg->cmsg_type == SO_TIMESTAMP && | |
1192 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval))) | |
1193 | tv = (struct timeval*) CMSG_DATA(cmsg); | |
1194 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1195 | cmsg->cmsg_type == SCM_RIGHTS) { | |
1196 | fds = (int*) CMSG_DATA(cmsg); | |
1197 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
d025f1e4 | 1198 | } |
a315ac4e | 1199 | } |
d025f1e4 | 1200 | |
a315ac4e LP |
1201 | /* And a trailing NUL, just in case */ |
1202 | s->buffer[n] = 0; | |
1203 | ||
1204 | if (fd == s->syslog_fd) { | |
1205 | if (n > 0 && n_fds == 0) | |
1206 | server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len); | |
1207 | else if (n_fds > 0) | |
1208 | log_warning("Got file descriptors via syslog socket. Ignoring."); | |
1209 | ||
1210 | } else if (fd == s->native_fd) { | |
1211 | if (n > 0 && n_fds == 0) | |
1212 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1213 | else if (n == 0 && n_fds == 1) | |
1214 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1215 | else if (n_fds > 0) | |
1216 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
1217 | ||
1218 | } else { | |
1219 | assert(fd == s->audit_fd); | |
1220 | ||
1221 | if (n > 0 && n_fds == 0) | |
1222 | server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen); | |
1223 | else if (n_fds > 0) | |
1224 | log_warning("Got file descriptors via audit socket. Ignoring."); | |
f9a810be | 1225 | } |
a315ac4e LP |
1226 | |
1227 | close_many(fds, n_fds); | |
1228 | return 0; | |
f9a810be | 1229 | } |
d025f1e4 | 1230 | |
f9a810be LP |
1231 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1232 | Server *s = userdata; | |
d025f1e4 | 1233 | |
f9a810be | 1234 | assert(s); |
d025f1e4 | 1235 | |
f9a810be | 1236 | log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid); |
d025f1e4 | 1237 | |
f9a810be LP |
1238 | server_flush_to_var(s); |
1239 | server_sync(s); | |
8580d1f7 | 1240 | server_vacuum(s, false, false); |
d025f1e4 | 1241 | |
ac5b0c13 | 1242 | (void) touch("/run/systemd/journal/flushed"); |
74055aa7 | 1243 | |
f9a810be LP |
1244 | return 0; |
1245 | } | |
d025f1e4 | 1246 | |
f9a810be LP |
1247 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1248 | Server *s = userdata; | |
d025f1e4 | 1249 | |
f9a810be | 1250 | assert(s); |
d025f1e4 | 1251 | |
f9a810be LP |
1252 | log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid); |
1253 | server_rotate(s); | |
8580d1f7 | 1254 | server_vacuum(s, true, true); |
d025f1e4 | 1255 | |
f9a810be LP |
1256 | return 0; |
1257 | } | |
d025f1e4 | 1258 | |
f9a810be LP |
1259 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1260 | Server *s = userdata; | |
d025f1e4 | 1261 | |
f9a810be | 1262 | assert(s); |
d025f1e4 | 1263 | |
4daf54a8 | 1264 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1265 | |
6203e07a | 1266 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1267 | return 0; |
1268 | } | |
1269 | ||
f9a810be | 1270 | static int setup_signals(Server *s) { |
f9a810be | 1271 | int r; |
d025f1e4 ZJS |
1272 | |
1273 | assert(s); | |
1274 | ||
72c0a2c2 | 1275 | assert(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1) >= 0); |
d025f1e4 | 1276 | |
151b9b96 | 1277 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1278 | if (r < 0) |
1279 | return r; | |
1280 | ||
151b9b96 | 1281 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1282 | if (r < 0) |
1283 | return r; | |
d025f1e4 | 1284 | |
151b9b96 | 1285 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1286 | if (r < 0) |
1287 | return r; | |
d025f1e4 | 1288 | |
151b9b96 | 1289 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1290 | if (r < 0) |
1291 | return r; | |
d025f1e4 ZJS |
1292 | |
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | static int server_parse_proc_cmdline(Server *s) { | |
7fd1b19b | 1297 | _cleanup_free_ char *line = NULL; |
d581d9d9 | 1298 | const char *p; |
74df0fca | 1299 | int r; |
d025f1e4 | 1300 | |
74df0fca | 1301 | r = proc_cmdline(&line); |
b5884878 | 1302 | if (r < 0) { |
da927ba9 | 1303 | log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m"); |
d025f1e4 | 1304 | return 0; |
b5884878 | 1305 | } |
d025f1e4 | 1306 | |
d581d9d9 SS |
1307 | p = line; |
1308 | for(;;) { | |
7fd1b19b | 1309 | _cleanup_free_ char *word; |
d025f1e4 | 1310 | |
d581d9d9 SS |
1311 | r = extract_first_word(&p, &word, NULL, 0); |
1312 | if (r < 0) | |
1313 | return log_error_errno(r, "Failed to parse journald syntax \"%s\": %m", line); | |
1314 | ||
1315 | if (r == 0) | |
1316 | break; | |
d025f1e4 ZJS |
1317 | |
1318 | if (startswith(word, "systemd.journald.forward_to_syslog=")) { | |
1319 | r = parse_boolean(word + 35); | |
1320 | if (r < 0) | |
1321 | log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35); | |
1322 | else | |
1323 | s->forward_to_syslog = r; | |
1324 | } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) { | |
1325 | r = parse_boolean(word + 33); | |
1326 | if (r < 0) | |
1327 | log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33); | |
1328 | else | |
1329 | s->forward_to_kmsg = r; | |
1330 | } else if (startswith(word, "systemd.journald.forward_to_console=")) { | |
1331 | r = parse_boolean(word + 36); | |
1332 | if (r < 0) | |
1333 | log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36); | |
1334 | else | |
1335 | s->forward_to_console = r; | |
40b71e89 ST |
1336 | } else if (startswith(word, "systemd.journald.forward_to_wall=")) { |
1337 | r = parse_boolean(word + 33); | |
1338 | if (r < 0) | |
1339 | log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33); | |
1340 | else | |
1341 | s->forward_to_wall = r; | |
d025f1e4 ZJS |
1342 | } else if (startswith(word, "systemd.journald")) |
1343 | log_warning("Invalid systemd.journald parameter. Ignoring."); | |
d025f1e4 ZJS |
1344 | } |
1345 | ||
804ae586 | 1346 | /* do not warn about state here, since probably systemd already did */ |
db91ea32 | 1347 | return 0; |
d025f1e4 ZJS |
1348 | } |
1349 | ||
1350 | static int server_parse_config_file(Server *s) { | |
d025f1e4 ZJS |
1351 | assert(s); |
1352 | ||
a9edaeff JT |
1353 | return config_parse_many("/etc/systemd/journald.conf", |
1354 | CONF_DIRS_NULSTR("systemd/journald.conf"), | |
1355 | "Journal\0", | |
1356 | config_item_perf_lookup, journald_gperf_lookup, | |
1357 | false, s); | |
d025f1e4 ZJS |
1358 | } |
1359 | ||
f9a810be LP |
1360 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1361 | Server *s = userdata; | |
26687bf8 OS |
1362 | |
1363 | assert(s); | |
1364 | ||
f9a810be | 1365 | server_sync(s); |
26687bf8 OS |
1366 | return 0; |
1367 | } | |
1368 | ||
d07f7b9e | 1369 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1370 | int r; |
1371 | ||
26687bf8 OS |
1372 | assert(s); |
1373 | ||
d07f7b9e LP |
1374 | if (priority <= LOG_CRIT) { |
1375 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1376 | server_sync(s); | |
1377 | return 0; | |
1378 | } | |
1379 | ||
26687bf8 OS |
1380 | if (s->sync_scheduled) |
1381 | return 0; | |
1382 | ||
f9a810be LP |
1383 | if (s->sync_interval_usec > 0) { |
1384 | usec_t when; | |
ca267016 | 1385 | |
6a0f1f6d | 1386 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1387 | if (r < 0) |
1388 | return r; | |
26687bf8 | 1389 | |
f9a810be LP |
1390 | when += s->sync_interval_usec; |
1391 | ||
1392 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1393 | r = sd_event_add_time( |
1394 | s->event, | |
1395 | &s->sync_event_source, | |
1396 | CLOCK_MONOTONIC, | |
1397 | when, 0, | |
1398 | server_dispatch_sync, s); | |
f9a810be LP |
1399 | if (r < 0) |
1400 | return r; | |
1401 | ||
1402 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1403 | } else { | |
1404 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1405 | if (r < 0) | |
1406 | return r; | |
1407 | ||
1408 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1409 | } | |
26687bf8 | 1410 | if (r < 0) |
f9a810be | 1411 | return r; |
26687bf8 | 1412 | |
f9a810be LP |
1413 | s->sync_scheduled = true; |
1414 | } | |
26687bf8 OS |
1415 | |
1416 | return 0; | |
1417 | } | |
1418 | ||
0c24bb23 LP |
1419 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1420 | Server *s = userdata; | |
1421 | ||
1422 | assert(s); | |
1423 | ||
1424 | server_cache_hostname(s); | |
1425 | return 0; | |
1426 | } | |
1427 | ||
1428 | static int server_open_hostname(Server *s) { | |
1429 | int r; | |
1430 | ||
1431 | assert(s); | |
1432 | ||
1433 | s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY); | |
4a62c710 MS |
1434 | if (s->hostname_fd < 0) |
1435 | return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m"); | |
0c24bb23 | 1436 | |
151b9b96 | 1437 | r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s); |
0c24bb23 | 1438 | if (r < 0) { |
28def94c DR |
1439 | /* kernels prior to 3.2 don't support polling this file. Ignore |
1440 | * the failure. */ | |
1441 | if (r == -EPERM) { | |
e53fc357 | 1442 | log_warning_errno(r, "Failed to register hostname fd in event loop, ignoring: %m"); |
03e334a1 | 1443 | s->hostname_fd = safe_close(s->hostname_fd); |
28def94c DR |
1444 | return 0; |
1445 | } | |
1446 | ||
23bbb0de | 1447 | return log_error_errno(r, "Failed to register hostname fd in event loop: %m"); |
0c24bb23 LP |
1448 | } |
1449 | ||
1450 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
23bbb0de MS |
1451 | if (r < 0) |
1452 | return log_error_errno(r, "Failed to adjust priority of host name event source: %m"); | |
0c24bb23 LP |
1453 | |
1454 | return 0; | |
1455 | } | |
1456 | ||
d025f1e4 | 1457 | int server_init(Server *s) { |
13790add | 1458 | _cleanup_fdset_free_ FDSet *fds = NULL; |
d025f1e4 | 1459 | int n, r, fd; |
7d18d348 | 1460 | bool no_sockets; |
d025f1e4 ZJS |
1461 | |
1462 | assert(s); | |
1463 | ||
1464 | zero(*s); | |
875c2e22 | 1465 | s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->audit_fd = s->hostname_fd = -1; |
d025f1e4 ZJS |
1466 | s->compress = true; |
1467 | s->seal = true; | |
1468 | ||
26687bf8 OS |
1469 | s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC; |
1470 | s->sync_scheduled = false; | |
1471 | ||
d025f1e4 ZJS |
1472 | s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL; |
1473 | s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST; | |
1474 | ||
40b71e89 | 1475 | s->forward_to_wall = true; |
d025f1e4 | 1476 | |
e150e820 MB |
1477 | s->max_file_usec = DEFAULT_MAX_FILE_USEC; |
1478 | ||
d025f1e4 ZJS |
1479 | s->max_level_store = LOG_DEBUG; |
1480 | s->max_level_syslog = LOG_DEBUG; | |
1481 | s->max_level_kmsg = LOG_NOTICE; | |
1482 | s->max_level_console = LOG_INFO; | |
40b71e89 | 1483 | s->max_level_wall = LOG_EMERG; |
d025f1e4 | 1484 | |
8580d1f7 LP |
1485 | journal_reset_metrics(&s->system_metrics); |
1486 | journal_reset_metrics(&s->runtime_metrics); | |
d025f1e4 ZJS |
1487 | |
1488 | server_parse_config_file(s); | |
1489 | server_parse_proc_cmdline(s); | |
8580d1f7 | 1490 | |
d288f79f | 1491 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
b1389b0d ZJS |
1492 | log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", |
1493 | s->rate_limit_interval, s->rate_limit_burst); | |
d288f79f ZJS |
1494 | s->rate_limit_interval = s->rate_limit_burst = 0; |
1495 | } | |
d025f1e4 | 1496 | |
8580d1f7 | 1497 | (void) mkdir_p("/run/systemd/journal", 0755); |
d025f1e4 | 1498 | |
43cf8388 | 1499 | s->user_journals = ordered_hashmap_new(NULL); |
d025f1e4 ZJS |
1500 | if (!s->user_journals) |
1501 | return log_oom(); | |
1502 | ||
1503 | s->mmap = mmap_cache_new(); | |
1504 | if (!s->mmap) | |
1505 | return log_oom(); | |
1506 | ||
f9a810be | 1507 | r = sd_event_default(&s->event); |
23bbb0de MS |
1508 | if (r < 0) |
1509 | return log_error_errno(r, "Failed to create event loop: %m"); | |
d025f1e4 | 1510 | |
f9a810be LP |
1511 | sd_event_set_watchdog(s->event, true); |
1512 | ||
d025f1e4 | 1513 | n = sd_listen_fds(true); |
23bbb0de MS |
1514 | if (n < 0) |
1515 | return log_error_errno(n, "Failed to read listening file descriptors from environment: %m"); | |
d025f1e4 ZJS |
1516 | |
1517 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
1518 | ||
1519 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
1520 | ||
1521 | if (s->native_fd >= 0) { | |
1522 | log_error("Too many native sockets passed."); | |
1523 | return -EINVAL; | |
1524 | } | |
1525 | ||
1526 | s->native_fd = fd; | |
1527 | ||
1528 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
1529 | ||
1530 | if (s->stdout_fd >= 0) { | |
1531 | log_error("Too many stdout sockets passed."); | |
1532 | return -EINVAL; | |
1533 | } | |
1534 | ||
1535 | s->stdout_fd = fd; | |
1536 | ||
03ee5c38 LP |
1537 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 || |
1538 | sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) { | |
d025f1e4 ZJS |
1539 | |
1540 | if (s->syslog_fd >= 0) { | |
1541 | log_error("Too many /dev/log sockets passed."); | |
1542 | return -EINVAL; | |
1543 | } | |
1544 | ||
1545 | s->syslog_fd = fd; | |
1546 | ||
875c2e22 LP |
1547 | } else if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
1548 | ||
1549 | if (s->audit_fd >= 0) { | |
1550 | log_error("Too many audit sockets passed."); | |
1551 | return -EINVAL; | |
1552 | } | |
1553 | ||
1554 | s->audit_fd = fd; | |
1555 | ||
4ec3cd73 | 1556 | } else { |
4ec3cd73 | 1557 | |
13790add LP |
1558 | if (!fds) { |
1559 | fds = fdset_new(); | |
1560 | if (!fds) | |
1561 | return log_oom(); | |
1562 | } | |
4ec3cd73 | 1563 | |
13790add LP |
1564 | r = fdset_put(fds, fd); |
1565 | if (r < 0) | |
1566 | return log_oom(); | |
4ec3cd73 | 1567 | } |
d025f1e4 ZJS |
1568 | } |
1569 | ||
15d91bff ZJS |
1570 | /* Try to restore streams, but don't bother if this fails */ |
1571 | (void) server_restore_streams(s, fds); | |
d025f1e4 | 1572 | |
13790add LP |
1573 | if (fdset_size(fds) > 0) { |
1574 | log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds)); | |
1575 | fds = fdset_free(fds); | |
1576 | } | |
1577 | ||
7d18d348 ZJS |
1578 | no_sockets = s->native_fd < 0 && s->stdout_fd < 0 && s->syslog_fd < 0 && s->audit_fd < 0; |
1579 | ||
1580 | /* always open stdout, syslog, native, and kmsg sockets */ | |
37b7affe ZJS |
1581 | |
1582 | /* systemd-journald.socket: /run/systemd/journal/stdout */ | |
15d91bff ZJS |
1583 | r = server_open_stdout_socket(s); |
1584 | if (r < 0) | |
1585 | return r; | |
1586 | ||
37b7affe | 1587 | /* systemd-journald-dev-log.socket: /run/systemd/journal/dev-log */ |
13790add | 1588 | r = server_open_syslog_socket(s); |
d025f1e4 ZJS |
1589 | if (r < 0) |
1590 | return r; | |
1591 | ||
37b7affe | 1592 | /* systemd-journald.socket: /run/systemd/journal/socket */ |
13790add | 1593 | r = server_open_native_socket(s); |
d025f1e4 ZJS |
1594 | if (r < 0) |
1595 | return r; | |
1596 | ||
37b7affe | 1597 | /* /dev/ksmg */ |
d025f1e4 ZJS |
1598 | r = server_open_dev_kmsg(s); |
1599 | if (r < 0) | |
1600 | return r; | |
1601 | ||
7d18d348 ZJS |
1602 | /* Unless we got *some* sockets and not audit, open audit socket */ |
1603 | if (s->audit_fd >= 0 || no_sockets) { | |
1604 | r = server_open_audit(s); | |
1605 | if (r < 0) | |
1606 | return r; | |
1607 | } | |
875c2e22 | 1608 | |
d025f1e4 ZJS |
1609 | r = server_open_kernel_seqnum(s); |
1610 | if (r < 0) | |
1611 | return r; | |
1612 | ||
0c24bb23 LP |
1613 | r = server_open_hostname(s); |
1614 | if (r < 0) | |
1615 | return r; | |
1616 | ||
f9a810be | 1617 | r = setup_signals(s); |
d025f1e4 ZJS |
1618 | if (r < 0) |
1619 | return r; | |
1620 | ||
1621 | s->udev = udev_new(); | |
1622 | if (!s->udev) | |
1623 | return -ENOMEM; | |
1624 | ||
f9a810be | 1625 | s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst); |
d025f1e4 ZJS |
1626 | if (!s->rate_limit) |
1627 | return -ENOMEM; | |
1628 | ||
e9174f29 LP |
1629 | r = cg_get_root_path(&s->cgroup_root); |
1630 | if (r < 0) | |
1631 | return r; | |
1632 | ||
0c24bb23 LP |
1633 | server_cache_hostname(s); |
1634 | server_cache_boot_id(s); | |
1635 | server_cache_machine_id(s); | |
1636 | ||
804ae586 | 1637 | return system_journal_open(s, false); |
d025f1e4 ZJS |
1638 | } |
1639 | ||
1640 | void server_maybe_append_tags(Server *s) { | |
1641 | #ifdef HAVE_GCRYPT | |
1642 | JournalFile *f; | |
1643 | Iterator i; | |
1644 | usec_t n; | |
1645 | ||
1646 | n = now(CLOCK_REALTIME); | |
1647 | ||
1648 | if (s->system_journal) | |
1649 | journal_file_maybe_append_tag(s->system_journal, n); | |
1650 | ||
43cf8388 | 1651 | ORDERED_HASHMAP_FOREACH(f, s->user_journals, i) |
d025f1e4 ZJS |
1652 | journal_file_maybe_append_tag(f, n); |
1653 | #endif | |
1654 | } | |
1655 | ||
1656 | void server_done(Server *s) { | |
1657 | JournalFile *f; | |
1658 | assert(s); | |
1659 | ||
1660 | while (s->stdout_streams) | |
1661 | stdout_stream_free(s->stdout_streams); | |
1662 | ||
1663 | if (s->system_journal) | |
1664 | journal_file_close(s->system_journal); | |
1665 | ||
1666 | if (s->runtime_journal) | |
1667 | journal_file_close(s->runtime_journal); | |
1668 | ||
43cf8388 | 1669 | while ((f = ordered_hashmap_steal_first(s->user_journals))) |
d025f1e4 ZJS |
1670 | journal_file_close(f); |
1671 | ||
43cf8388 | 1672 | ordered_hashmap_free(s->user_journals); |
d025f1e4 | 1673 | |
f9a810be LP |
1674 | sd_event_source_unref(s->syslog_event_source); |
1675 | sd_event_source_unref(s->native_event_source); | |
1676 | sd_event_source_unref(s->stdout_event_source); | |
1677 | sd_event_source_unref(s->dev_kmsg_event_source); | |
875c2e22 | 1678 | sd_event_source_unref(s->audit_event_source); |
f9a810be LP |
1679 | sd_event_source_unref(s->sync_event_source); |
1680 | sd_event_source_unref(s->sigusr1_event_source); | |
1681 | sd_event_source_unref(s->sigusr2_event_source); | |
1682 | sd_event_source_unref(s->sigterm_event_source); | |
1683 | sd_event_source_unref(s->sigint_event_source); | |
0c24bb23 | 1684 | sd_event_source_unref(s->hostname_event_source); |
f9a810be | 1685 | sd_event_unref(s->event); |
d025f1e4 | 1686 | |
03e334a1 LP |
1687 | safe_close(s->syslog_fd); |
1688 | safe_close(s->native_fd); | |
1689 | safe_close(s->stdout_fd); | |
1690 | safe_close(s->dev_kmsg_fd); | |
875c2e22 | 1691 | safe_close(s->audit_fd); |
03e334a1 | 1692 | safe_close(s->hostname_fd); |
0c24bb23 | 1693 | |
d025f1e4 ZJS |
1694 | if (s->rate_limit) |
1695 | journal_rate_limit_free(s->rate_limit); | |
1696 | ||
1697 | if (s->kernel_seqnum) | |
1698 | munmap(s->kernel_seqnum, sizeof(uint64_t)); | |
1699 | ||
1700 | free(s->buffer); | |
1701 | free(s->tty_path); | |
e9174f29 | 1702 | free(s->cgroup_root); |
99d0966e | 1703 | free(s->hostname_field); |
d025f1e4 ZJS |
1704 | |
1705 | if (s->mmap) | |
1706 | mmap_cache_unref(s->mmap); | |
1707 | ||
3e044c49 | 1708 | udev_unref(s->udev); |
d025f1e4 | 1709 | } |
8580d1f7 LP |
1710 | |
1711 | static const char* const storage_table[_STORAGE_MAX] = { | |
1712 | [STORAGE_AUTO] = "auto", | |
1713 | [STORAGE_VOLATILE] = "volatile", | |
1714 | [STORAGE_PERSISTENT] = "persistent", | |
1715 | [STORAGE_NONE] = "none" | |
1716 | }; | |
1717 | ||
1718 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
1719 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
1720 | ||
1721 | static const char* const split_mode_table[_SPLIT_MAX] = { | |
1722 | [SPLIT_LOGIN] = "login", | |
1723 | [SPLIT_UID] = "uid", | |
1724 | [SPLIT_NONE] = "none", | |
1725 | }; | |
1726 | ||
1727 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
1728 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); |