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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" | |
d025f1e4 | 37 | #include "cgroup-util.h" |
d025f1e4 | 38 | #include "conf-parser.h" |
958b66ea | 39 | #include "formats-util.h" |
8580d1f7 | 40 | #include "hashmap.h" |
958b66ea | 41 | #include "hostname-util.h" |
8580d1f7 LP |
42 | #include "journal-authenticate.h" |
43 | #include "journal-file.h" | |
d025f1e4 ZJS |
44 | #include "journal-internal.h" |
45 | #include "journal-vacuum.h" | |
8580d1f7 | 46 | #include "journald-audit.h" |
d025f1e4 | 47 | #include "journald-kmsg.h" |
d025f1e4 | 48 | #include "journald-native.h" |
8580d1f7 | 49 | #include "journald-rate-limit.h" |
8580d1f7 LP |
50 | #include "journald-stream.h" |
51 | #include "journald-syslog.h" | |
07630cea LP |
52 | #include "missing.h" |
53 | #include "mkdir.h" | |
54 | #include "process-util.h" | |
55 | #include "rm-rf.h" | |
56 | #include "selinux-util.h" | |
57 | #include "signal-util.h" | |
58 | #include "socket-util.h" | |
59 | #include "string-util.h" | |
60 | #include "journald-server.h" | |
d025f1e4 | 61 | |
d025f1e4 ZJS |
62 | #define USER_JOURNALS_MAX 1024 |
63 | ||
26687bf8 | 64 | #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE) |
7f1ad696 LP |
65 | #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC) |
66 | #define DEFAULT_RATE_LIMIT_BURST 1000 | |
e150e820 | 67 | #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH |
d025f1e4 | 68 | |
8580d1f7 | 69 | #define RECHECK_SPACE_USEC (30*USEC_PER_SEC) |
d025f1e4 | 70 | |
8580d1f7 LP |
71 | static int determine_space_for( |
72 | Server *s, | |
73 | JournalMetrics *metrics, | |
74 | const char *path, | |
75 | const char *name, | |
76 | bool verbose, | |
77 | bool patch_min_use, | |
78 | uint64_t *available, | |
79 | uint64_t *limit) { | |
80 | ||
81 | uint64_t sum = 0, ss_avail, avail; | |
7fd1b19b | 82 | _cleanup_closedir_ DIR *d = NULL; |
8580d1f7 LP |
83 | struct dirent *de; |
84 | struct statvfs ss; | |
85 | const char *p; | |
d025f1e4 | 86 | usec_t ts; |
d025f1e4 | 87 | |
8580d1f7 LP |
88 | assert(s); |
89 | assert(metrics); | |
90 | assert(path); | |
91 | assert(name); | |
d025f1e4 | 92 | |
8580d1f7 | 93 | ts = now(CLOCK_MONOTONIC); |
d025f1e4 | 94 | |
8580d1f7 | 95 | if (!verbose && s->cached_space_timestamp + RECHECK_SPACE_USEC > ts) { |
d025f1e4 | 96 | |
8580d1f7 LP |
97 | if (available) |
98 | *available = s->cached_space_available; | |
99 | if (limit) | |
100 | *limit = s->cached_space_limit; | |
d025f1e4 | 101 | |
d025f1e4 | 102 | return 0; |
8580d1f7 | 103 | } |
d025f1e4 | 104 | |
8580d1f7 | 105 | p = strjoina(path, SERVER_MACHINE_ID(s)); |
d025f1e4 | 106 | d = opendir(p); |
d025f1e4 | 107 | if (!d) |
8580d1f7 | 108 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno, "Failed to open %s: %m", p); |
d025f1e4 ZJS |
109 | |
110 | if (fstatvfs(dirfd(d), &ss) < 0) | |
8580d1f7 | 111 | return log_error_errno(errno, "Failed to fstatvfs(%s): %m", p); |
d025f1e4 | 112 | |
8580d1f7 | 113 | FOREACH_DIRENT_ALL(de, d, break) { |
d025f1e4 | 114 | struct stat st; |
d025f1e4 ZJS |
115 | |
116 | if (!endswith(de->d_name, ".journal") && | |
117 | !endswith(de->d_name, ".journal~")) | |
118 | continue; | |
119 | ||
8580d1f7 LP |
120 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) { |
121 | log_debug_errno(errno, "Failed to stat %s/%s, ignoring: %m", p, de->d_name); | |
d025f1e4 | 122 | continue; |
8580d1f7 | 123 | } |
d025f1e4 ZJS |
124 | |
125 | if (!S_ISREG(st.st_mode)) | |
126 | continue; | |
127 | ||
128 | sum += (uint64_t) st.st_blocks * 512UL; | |
129 | } | |
130 | ||
8580d1f7 LP |
131 | /* If request, then let's bump the min_use limit to the |
132 | * current usage on disk. We do this when starting up and | |
133 | * first opening the journal files. This way sudden spikes in | |
134 | * disk usage will not cause journald to vacuum files without | |
135 | * bounds. Note that this means that only a restart of | |
136 | * journald will make it reset this value. */ | |
d025f1e4 | 137 | |
8580d1f7 LP |
138 | if (patch_min_use) |
139 | metrics->min_use = MAX(metrics->min_use, sum); | |
348ced90 | 140 | |
8580d1f7 LP |
141 | ss_avail = ss.f_bsize * ss.f_bavail; |
142 | avail = LESS_BY(ss_avail, metrics->keep_free); | |
348ced90 | 143 | |
8580d1f7 LP |
144 | s->cached_space_limit = MIN(MAX(sum + avail, metrics->min_use), metrics->max_use); |
145 | s->cached_space_available = LESS_BY(s->cached_space_limit, sum); | |
146 | s->cached_space_timestamp = ts; | |
d025f1e4 | 147 | |
670b110c ZJS |
148 | if (verbose) { |
149 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
8580d1f7 | 150 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX], fb6[FORMAT_BYTES_MAX]; |
670b110c ZJS |
151 | |
152 | server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE, | |
8580d1f7 | 153 | "%s (%s) is currently using %s.\n" |
da2e288b LP |
154 | "Maximum allowed usage is set to %s.\n" |
155 | "Leaving at least %s free (of currently available %s of space).\n" | |
8580d1f7 LP |
156 | "Enforced usage limit is thus %s, of which %s are still available.", |
157 | name, path, | |
670b110c | 158 | format_bytes(fb1, sizeof(fb1), sum), |
8580d1f7 LP |
159 | format_bytes(fb2, sizeof(fb2), metrics->max_use), |
160 | format_bytes(fb3, sizeof(fb3), metrics->keep_free), | |
670b110c | 161 | format_bytes(fb4, sizeof(fb4), ss_avail), |
8580d1f7 LP |
162 | format_bytes(fb5, sizeof(fb5), s->cached_space_limit), |
163 | format_bytes(fb6, sizeof(fb6), s->cached_space_available)); | |
164 | } | |
165 | ||
166 | if (available) | |
167 | *available = s->cached_space_available; | |
168 | if (limit) | |
169 | *limit = s->cached_space_limit; | |
170 | ||
171 | return 1; | |
172 | } | |
173 | ||
174 | static int determine_space(Server *s, bool verbose, bool patch_min_use, uint64_t *available, uint64_t *limit) { | |
175 | JournalMetrics *metrics; | |
176 | const char *path, *name; | |
177 | ||
178 | assert(s); | |
179 | ||
180 | if (s->system_journal) { | |
181 | path = "/var/log/journal/"; | |
182 | metrics = &s->system_metrics; | |
183 | name = "System journal"; | |
184 | } else { | |
185 | path = "/run/log/journal/"; | |
186 | metrics = &s->runtime_metrics; | |
187 | name = "Runtime journal"; | |
670b110c ZJS |
188 | } |
189 | ||
8580d1f7 | 190 | return determine_space_for(s, metrics, path, name, verbose, patch_min_use, available, limit); |
d025f1e4 ZJS |
191 | } |
192 | ||
d025f1e4 ZJS |
193 | void server_fix_perms(Server *s, JournalFile *f, uid_t uid) { |
194 | int r; | |
195 | #ifdef HAVE_ACL | |
0fb39831 | 196 | _cleanup_(acl_freep) acl_t acl = NULL; |
d025f1e4 ZJS |
197 | acl_entry_t entry; |
198 | acl_permset_t permset; | |
199 | #endif | |
200 | ||
201 | assert(f); | |
202 | ||
4608af43 | 203 | r = fchmod(f->fd, 0640); |
d025f1e4 | 204 | if (r < 0) |
65089b82 | 205 | log_warning_errno(errno, "Failed to fix access mode on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
206 | |
207 | #ifdef HAVE_ACL | |
34c10968 | 208 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
209 | return; |
210 | ||
211 | acl = acl_get_fd(f->fd); | |
212 | if (!acl) { | |
56f64d95 | 213 | log_warning_errno(errno, "Failed to read ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
214 | return; |
215 | } | |
216 | ||
217 | r = acl_find_uid(acl, uid, &entry); | |
218 | if (r <= 0) { | |
219 | ||
220 | if (acl_create_entry(&acl, &entry) < 0 || | |
221 | acl_set_tag_type(entry, ACL_USER) < 0 || | |
222 | acl_set_qualifier(entry, &uid) < 0) { | |
56f64d95 | 223 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
0fb39831 | 224 | return; |
d025f1e4 ZJS |
225 | } |
226 | } | |
227 | ||
23ad4dd8 JAS |
228 | /* We do not recalculate the mask unconditionally here, |
229 | * so that the fchmod() mask above stays intact. */ | |
d025f1e4 | 230 | if (acl_get_permset(entry, &permset) < 0 || |
23ad4dd8 JAS |
231 | acl_add_perm(permset, ACL_READ) < 0 || |
232 | calc_acl_mask_if_needed(&acl) < 0) { | |
56f64d95 | 233 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
0fb39831 | 234 | return; |
d025f1e4 ZJS |
235 | } |
236 | ||
237 | if (acl_set_fd(f->fd, acl) < 0) | |
56f64d95 | 238 | log_warning_errno(errno, "Failed to set ACL on %s, ignoring: %m", f->path); |
d025f1e4 | 239 | |
d025f1e4 ZJS |
240 | #endif |
241 | } | |
242 | ||
243 | static JournalFile* find_journal(Server *s, uid_t uid) { | |
ed375beb | 244 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
245 | int r; |
246 | JournalFile *f; | |
247 | sd_id128_t machine; | |
248 | ||
249 | assert(s); | |
250 | ||
251 | /* We split up user logs only on /var, not on /run. If the | |
252 | * runtime file is open, we write to it exclusively, in order | |
253 | * to guarantee proper order as soon as we flush /run to | |
254 | * /var and close the runtime file. */ | |
255 | ||
256 | if (s->runtime_journal) | |
257 | return s->runtime_journal; | |
258 | ||
f7dc3ab9 | 259 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
260 | return s->system_journal; |
261 | ||
262 | r = sd_id128_get_machine(&machine); | |
263 | if (r < 0) | |
264 | return s->system_journal; | |
265 | ||
43cf8388 | 266 | f = ordered_hashmap_get(s->user_journals, UINT32_TO_PTR(uid)); |
d025f1e4 ZJS |
267 | if (f) |
268 | return f; | |
269 | ||
de0671ee ZJS |
270 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
271 | SD_ID128_FORMAT_VAL(machine), uid) < 0) | |
d025f1e4 ZJS |
272 | return s->system_journal; |
273 | ||
43cf8388 | 274 | while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { |
d025f1e4 | 275 | /* Too many open? Then let's close one */ |
43cf8388 | 276 | f = ordered_hashmap_steal_first(s->user_journals); |
d025f1e4 ZJS |
277 | assert(f); |
278 | journal_file_close(f); | |
279 | } | |
280 | ||
cbd67177 | 281 | r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f); |
d025f1e4 ZJS |
282 | if (r < 0) |
283 | return s->system_journal; | |
284 | ||
285 | server_fix_perms(s, f, uid); | |
286 | ||
43cf8388 | 287 | r = ordered_hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f); |
d025f1e4 ZJS |
288 | if (r < 0) { |
289 | journal_file_close(f); | |
290 | return s->system_journal; | |
291 | } | |
292 | ||
293 | return f; | |
294 | } | |
295 | ||
ea69bd41 LP |
296 | static int do_rotate( |
297 | Server *s, | |
298 | JournalFile **f, | |
299 | const char* name, | |
300 | bool seal, | |
301 | uint32_t uid) { | |
302 | ||
fc55baee ZJS |
303 | int r; |
304 | assert(s); | |
305 | ||
306 | if (!*f) | |
307 | return -EINVAL; | |
308 | ||
309 | r = journal_file_rotate(f, s->compress, seal); | |
310 | if (r < 0) | |
311 | if (*f) | |
ea69bd41 | 312 | log_error_errno(r, "Failed to rotate %s: %m", (*f)->path); |
fc55baee | 313 | else |
ea69bd41 | 314 | log_error_errno(r, "Failed to create new %s journal: %m", name); |
fc55baee ZJS |
315 | else |
316 | server_fix_perms(s, *f, uid); | |
2678031a | 317 | |
fc55baee ZJS |
318 | return r; |
319 | } | |
320 | ||
d025f1e4 ZJS |
321 | void server_rotate(Server *s) { |
322 | JournalFile *f; | |
323 | void *k; | |
324 | Iterator i; | |
325 | int r; | |
326 | ||
327 | log_debug("Rotating..."); | |
328 | ||
8580d1f7 LP |
329 | (void) do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
330 | (void) do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 | 331 | |
43cf8388 | 332 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
fc55baee ZJS |
333 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k)); |
334 | if (r >= 0) | |
43cf8388 | 335 | ordered_hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
336 | else if (!f) |
337 | /* Old file has been closed and deallocated */ | |
43cf8388 | 338 | ordered_hashmap_remove(s->user_journals, k); |
d025f1e4 ZJS |
339 | } |
340 | } | |
341 | ||
26687bf8 OS |
342 | void server_sync(Server *s) { |
343 | JournalFile *f; | |
344 | void *k; | |
345 | Iterator i; | |
346 | int r; | |
347 | ||
26687bf8 OS |
348 | if (s->system_journal) { |
349 | r = journal_file_set_offline(s->system_journal); | |
350 | if (r < 0) | |
65089b82 | 351 | log_warning_errno(r, "Failed to sync system journal, ignoring: %m"); |
26687bf8 OS |
352 | } |
353 | ||
43cf8388 | 354 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
26687bf8 OS |
355 | r = journal_file_set_offline(f); |
356 | if (r < 0) | |
65089b82 | 357 | log_warning_errno(r, "Failed to sync user journal, ignoring: %m"); |
26687bf8 OS |
358 | } |
359 | ||
f9a810be LP |
360 | if (s->sync_event_source) { |
361 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
362 | if (r < 0) | |
da927ba9 | 363 | log_error_errno(r, "Failed to disable sync timer source: %m"); |
f9a810be | 364 | } |
26687bf8 OS |
365 | |
366 | s->sync_scheduled = false; | |
367 | } | |
368 | ||
ea69bd41 LP |
369 | static void do_vacuum( |
370 | Server *s, | |
ea69bd41 | 371 | JournalFile *f, |
8580d1f7 LP |
372 | JournalMetrics *metrics, |
373 | const char *path, | |
374 | const char *name, | |
375 | bool verbose, | |
376 | bool patch_min_use) { | |
ea69bd41 LP |
377 | |
378 | const char *p; | |
8580d1f7 | 379 | uint64_t limit; |
63c8666b ZJS |
380 | int r; |
381 | ||
8580d1f7 LP |
382 | assert(s); |
383 | assert(metrics); | |
384 | assert(path); | |
385 | assert(name); | |
386 | ||
63c8666b ZJS |
387 | if (!f) |
388 | return; | |
389 | ||
8580d1f7 LP |
390 | p = strjoina(path, SERVER_MACHINE_ID(s)); |
391 | ||
392 | limit = metrics->max_use; | |
393 | (void) determine_space_for(s, metrics, path, name, verbose, patch_min_use, NULL, &limit); | |
394 | ||
395 | r = journal_directory_vacuum(p, limit, metrics->n_max_files, s->max_retention_usec, &s->oldest_file_usec, verbose); | |
63c8666b | 396 | if (r < 0 && r != -ENOENT) |
8580d1f7 | 397 | log_warning_errno(r, "Failed to vacuum %s, ignoring: %m", p); |
63c8666b ZJS |
398 | } |
399 | ||
8580d1f7 LP |
400 | int server_vacuum(Server *s, bool verbose, bool patch_min_use) { |
401 | assert(s); | |
d025f1e4 ZJS |
402 | |
403 | log_debug("Vacuuming..."); | |
404 | ||
405 | s->oldest_file_usec = 0; | |
406 | ||
8580d1f7 LP |
407 | do_vacuum(s, s->system_journal, &s->system_metrics, "/var/log/journal/", "System journal", verbose, patch_min_use); |
408 | do_vacuum(s, s->runtime_journal, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", verbose, patch_min_use); | |
d025f1e4 | 409 | |
8580d1f7 LP |
410 | s->cached_space_limit = 0; |
411 | s->cached_space_available = 0; | |
412 | s->cached_space_timestamp = 0; | |
d025f1e4 | 413 | |
8580d1f7 | 414 | return 0; |
d025f1e4 ZJS |
415 | } |
416 | ||
0c24bb23 LP |
417 | static void server_cache_machine_id(Server *s) { |
418 | sd_id128_t id; | |
419 | int r; | |
420 | ||
421 | assert(s); | |
422 | ||
423 | r = sd_id128_get_machine(&id); | |
424 | if (r < 0) | |
425 | return; | |
426 | ||
427 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
428 | } | |
429 | ||
430 | static void server_cache_boot_id(Server *s) { | |
431 | sd_id128_t id; | |
432 | int r; | |
433 | ||
434 | assert(s); | |
435 | ||
436 | r = sd_id128_get_boot(&id); | |
437 | if (r < 0) | |
438 | return; | |
439 | ||
440 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
441 | } | |
442 | ||
443 | static void server_cache_hostname(Server *s) { | |
444 | _cleanup_free_ char *t = NULL; | |
445 | char *x; | |
446 | ||
447 | assert(s); | |
448 | ||
449 | t = gethostname_malloc(); | |
450 | if (!t) | |
451 | return; | |
452 | ||
453 | x = strappend("_HOSTNAME=", t); | |
454 | if (!x) | |
455 | return; | |
456 | ||
457 | free(s->hostname_field); | |
458 | s->hostname_field = x; | |
459 | } | |
460 | ||
8531ae70 | 461 | static bool shall_try_append_again(JournalFile *f, int r) { |
d025f1e4 ZJS |
462 | |
463 | /* -E2BIG Hit configured limit | |
464 | -EFBIG Hit fs limit | |
465 | -EDQUOT Quota limit hit | |
466 | -ENOSPC Disk full | |
fa6ac760 | 467 | -EIO I/O error of some kind (mmap) |
d025f1e4 ZJS |
468 | -EHOSTDOWN Other machine |
469 | -EBUSY Unclean shutdown | |
470 | -EPROTONOSUPPORT Unsupported feature | |
471 | -EBADMSG Corrupted | |
472 | -ENODATA Truncated | |
2678031a LP |
473 | -ESHUTDOWN Already archived |
474 | -EIDRM Journal file has been deleted */ | |
d025f1e4 ZJS |
475 | |
476 | if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC) | |
477 | log_debug("%s: Allocation limit reached, rotating.", f->path); | |
478 | else if (r == -EHOSTDOWN) | |
479 | log_info("%s: Journal file from other machine, rotating.", f->path); | |
480 | else if (r == -EBUSY) | |
481 | log_info("%s: Unclean shutdown, rotating.", f->path); | |
482 | else if (r == -EPROTONOSUPPORT) | |
483 | log_info("%s: Unsupported feature, rotating.", f->path); | |
484 | else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN) | |
485 | log_warning("%s: Journal file corrupted, rotating.", f->path); | |
fa6ac760 LP |
486 | else if (r == -EIO) |
487 | log_warning("%s: IO error, rotating.", f->path); | |
2678031a LP |
488 | else if (r == -EIDRM) |
489 | log_warning("%s: Journal file has been deleted, rotating.", f->path); | |
d025f1e4 ZJS |
490 | else |
491 | return false; | |
492 | ||
493 | return true; | |
494 | } | |
495 | ||
d07f7b9e | 496 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) { |
d025f1e4 ZJS |
497 | JournalFile *f; |
498 | bool vacuumed = false; | |
499 | int r; | |
500 | ||
501 | assert(s); | |
502 | assert(iovec); | |
503 | assert(n > 0); | |
504 | ||
505 | f = find_journal(s, uid); | |
506 | if (!f) | |
507 | return; | |
508 | ||
509 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
510 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
511 | server_rotate(s); | |
8580d1f7 | 512 | server_vacuum(s, false, false); |
d025f1e4 ZJS |
513 | vacuumed = true; |
514 | ||
515 | f = find_journal(s, uid); | |
516 | if (!f) | |
517 | return; | |
518 | } | |
519 | ||
520 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
26687bf8 | 521 | if (r >= 0) { |
d07f7b9e | 522 | server_schedule_sync(s, priority); |
d025f1e4 | 523 | return; |
26687bf8 | 524 | } |
d025f1e4 ZJS |
525 | |
526 | if (vacuumed || !shall_try_append_again(f, r)) { | |
8266e1c0 | 527 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); |
d025f1e4 ZJS |
528 | return; |
529 | } | |
530 | ||
531 | server_rotate(s); | |
8580d1f7 | 532 | server_vacuum(s, false, false); |
d025f1e4 ZJS |
533 | |
534 | f = find_journal(s, uid); | |
535 | if (!f) | |
536 | return; | |
537 | ||
538 | log_debug("Retrying write."); | |
539 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
8266e1c0 LP |
540 | if (r < 0) |
541 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); | |
542 | else | |
d07f7b9e | 543 | server_schedule_sync(s, priority); |
d025f1e4 ZJS |
544 | } |
545 | ||
546 | static void dispatch_message_real( | |
547 | Server *s, | |
548 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
549 | const struct ucred *ucred, |
550 | const struct timeval *tv, | |
d025f1e4 | 551 | const char *label, size_t label_len, |
968f3196 | 552 | const char *unit_id, |
d07f7b9e | 553 | int priority, |
968f3196 | 554 | pid_t object_pid) { |
d025f1e4 | 555 | |
968f3196 | 556 | char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)], |
ae018d9b LP |
557 | uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)], |
558 | gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)], | |
559 | owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)], | |
d3789917 | 560 | source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)], |
968f3196 ZJS |
561 | o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)], |
562 | o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)], | |
563 | o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)]; | |
564 | uid_t object_uid; | |
565 | gid_t object_gid; | |
968f3196 | 566 | char *x; |
d025f1e4 | 567 | int r; |
ae018d9b | 568 | char *t, *c; |
82499507 LP |
569 | uid_t realuid = 0, owner = 0, journal_uid; |
570 | bool owner_valid = false; | |
ae018d9b | 571 | #ifdef HAVE_AUDIT |
968f3196 ZJS |
572 | char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], |
573 | audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)], | |
574 | o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], | |
575 | o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)]; | |
ae018d9b LP |
576 | |
577 | uint32_t audit; | |
578 | uid_t loginuid; | |
579 | #endif | |
d025f1e4 ZJS |
580 | |
581 | assert(s); | |
582 | assert(iovec); | |
583 | assert(n > 0); | |
968f3196 | 584 | assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m); |
d025f1e4 ZJS |
585 | |
586 | if (ucred) { | |
d025f1e4 ZJS |
587 | realuid = ucred->uid; |
588 | ||
de0671ee | 589 | sprintf(pid, "_PID="PID_FMT, ucred->pid); |
c2457105 | 590 | IOVEC_SET_STRING(iovec[n++], pid); |
d025f1e4 | 591 | |
de0671ee | 592 | sprintf(uid, "_UID="UID_FMT, ucred->uid); |
c2457105 | 593 | IOVEC_SET_STRING(iovec[n++], uid); |
d025f1e4 | 594 | |
de0671ee | 595 | sprintf(gid, "_GID="GID_FMT, ucred->gid); |
c2457105 | 596 | IOVEC_SET_STRING(iovec[n++], gid); |
d025f1e4 ZJS |
597 | |
598 | r = get_process_comm(ucred->pid, &t); | |
599 | if (r >= 0) { | |
63c372cb | 600 | x = strjoina("_COMM=", t); |
d025f1e4 | 601 | free(t); |
968f3196 | 602 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
603 | } |
604 | ||
605 | r = get_process_exe(ucred->pid, &t); | |
606 | if (r >= 0) { | |
63c372cb | 607 | x = strjoina("_EXE=", t); |
d025f1e4 | 608 | free(t); |
968f3196 | 609 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
610 | } |
611 | ||
9bdbc2e2 | 612 | r = get_process_cmdline(ucred->pid, 0, false, &t); |
d025f1e4 | 613 | if (r >= 0) { |
63c372cb | 614 | x = strjoina("_CMDLINE=", t); |
d025f1e4 | 615 | free(t); |
3a832116 SL |
616 | IOVEC_SET_STRING(iovec[n++], x); |
617 | } | |
618 | ||
619 | r = get_process_capeff(ucred->pid, &t); | |
620 | if (r >= 0) { | |
63c372cb | 621 | x = strjoina("_CAP_EFFECTIVE=", t); |
3a832116 | 622 | free(t); |
968f3196 | 623 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
624 | } |
625 | ||
0a20e3c1 | 626 | #ifdef HAVE_AUDIT |
d025f1e4 | 627 | r = audit_session_from_pid(ucred->pid, &audit); |
ae018d9b | 628 | if (r >= 0) { |
de0671ee | 629 | sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit); |
ae018d9b LP |
630 | IOVEC_SET_STRING(iovec[n++], audit_session); |
631 | } | |
d025f1e4 ZJS |
632 | |
633 | r = audit_loginuid_from_pid(ucred->pid, &loginuid); | |
7027ff61 | 634 | if (r >= 0) { |
de0671ee | 635 | sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid); |
ae018d9b | 636 | IOVEC_SET_STRING(iovec[n++], audit_loginuid); |
d025f1e4 | 637 | } |
ae018d9b | 638 | #endif |
d025f1e4 | 639 | |
e9174f29 | 640 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c); |
7027ff61 | 641 | if (r >= 0) { |
968f3196 ZJS |
642 | char *session = NULL; |
643 | ||
63c372cb | 644 | x = strjoina("_SYSTEMD_CGROUP=", c); |
968f3196 | 645 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 | 646 | |
ae018d9b LP |
647 | r = cg_path_get_session(c, &t); |
648 | if (r >= 0) { | |
63c372cb | 649 | session = strjoina("_SYSTEMD_SESSION=", t); |
ae018d9b | 650 | free(t); |
d025f1e4 | 651 | IOVEC_SET_STRING(iovec[n++], session); |
ae018d9b LP |
652 | } |
653 | ||
654 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
655 | owner_valid = true; | |
d025f1e4 | 656 | |
de0671ee | 657 | sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner); |
d025f1e4 | 658 | IOVEC_SET_STRING(iovec[n++], owner_uid); |
ae018d9b | 659 | } |
d025f1e4 | 660 | |
ae018d9b | 661 | if (cg_path_get_unit(c, &t) >= 0) { |
63c372cb | 662 | x = strjoina("_SYSTEMD_UNIT=", t); |
ae018d9b | 663 | free(t); |
19cace37 LP |
664 | IOVEC_SET_STRING(iovec[n++], x); |
665 | } else if (unit_id && !session) { | |
63c372cb | 666 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
19cace37 LP |
667 | IOVEC_SET_STRING(iovec[n++], x); |
668 | } | |
669 | ||
670 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 671 | x = strjoina("_SYSTEMD_USER_UNIT=", t); |
ae018d9b | 672 | free(t); |
968f3196 | 673 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 674 | } else if (unit_id && session) { |
63c372cb | 675 | x = strjoina("_SYSTEMD_USER_UNIT=", unit_id); |
19cace37 LP |
676 | IOVEC_SET_STRING(iovec[n++], x); |
677 | } | |
ae018d9b | 678 | |
0a244b8e | 679 | if (cg_path_get_slice(c, &t) >= 0) { |
63c372cb | 680 | x = strjoina("_SYSTEMD_SLICE=", t); |
0a244b8e LP |
681 | free(t); |
682 | IOVEC_SET_STRING(iovec[n++], x); | |
683 | } | |
684 | ||
ae018d9b | 685 | free(c); |
2d43b190 | 686 | } else if (unit_id) { |
63c372cb | 687 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
2d43b190 | 688 | IOVEC_SET_STRING(iovec[n++], x); |
ef1673d1 | 689 | } |
d025f1e4 | 690 | |
d025f1e4 | 691 | #ifdef HAVE_SELINUX |
6baa7db0 | 692 | if (mac_selinux_use()) { |
d682b3a7 | 693 | if (label) { |
f8294e41 | 694 | x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1); |
ae018d9b | 695 | |
d682b3a7 LP |
696 | *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0; |
697 | IOVEC_SET_STRING(iovec[n++], x); | |
698 | } else { | |
699 | security_context_t con; | |
d025f1e4 | 700 | |
d682b3a7 | 701 | if (getpidcon(ucred->pid, &con) >= 0) { |
63c372cb | 702 | x = strjoina("_SELINUX_CONTEXT=", con); |
e7ff4e7f | 703 | |
d682b3a7 LP |
704 | freecon(con); |
705 | IOVEC_SET_STRING(iovec[n++], x); | |
706 | } | |
d025f1e4 ZJS |
707 | } |
708 | } | |
709 | #endif | |
710 | } | |
968f3196 ZJS |
711 | assert(n <= m); |
712 | ||
713 | if (object_pid) { | |
714 | r = get_process_uid(object_pid, &object_uid); | |
715 | if (r >= 0) { | |
de0671ee | 716 | sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid); |
968f3196 ZJS |
717 | IOVEC_SET_STRING(iovec[n++], o_uid); |
718 | } | |
719 | ||
720 | r = get_process_gid(object_pid, &object_gid); | |
721 | if (r >= 0) { | |
de0671ee | 722 | sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid); |
968f3196 ZJS |
723 | IOVEC_SET_STRING(iovec[n++], o_gid); |
724 | } | |
725 | ||
726 | r = get_process_comm(object_pid, &t); | |
727 | if (r >= 0) { | |
63c372cb | 728 | x = strjoina("OBJECT_COMM=", t); |
968f3196 ZJS |
729 | free(t); |
730 | IOVEC_SET_STRING(iovec[n++], x); | |
731 | } | |
732 | ||
733 | r = get_process_exe(object_pid, &t); | |
734 | if (r >= 0) { | |
63c372cb | 735 | x = strjoina("OBJECT_EXE=", t); |
968f3196 ZJS |
736 | free(t); |
737 | IOVEC_SET_STRING(iovec[n++], x); | |
738 | } | |
739 | ||
740 | r = get_process_cmdline(object_pid, 0, false, &t); | |
741 | if (r >= 0) { | |
63c372cb | 742 | x = strjoina("OBJECT_CMDLINE=", t); |
968f3196 ZJS |
743 | free(t); |
744 | IOVEC_SET_STRING(iovec[n++], x); | |
745 | } | |
746 | ||
747 | #ifdef HAVE_AUDIT | |
748 | r = audit_session_from_pid(object_pid, &audit); | |
749 | if (r >= 0) { | |
de0671ee | 750 | sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit); |
968f3196 ZJS |
751 | IOVEC_SET_STRING(iovec[n++], o_audit_session); |
752 | } | |
753 | ||
754 | r = audit_loginuid_from_pid(object_pid, &loginuid); | |
755 | if (r >= 0) { | |
de0671ee | 756 | sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid); |
968f3196 ZJS |
757 | IOVEC_SET_STRING(iovec[n++], o_audit_loginuid); |
758 | } | |
759 | #endif | |
760 | ||
e9174f29 | 761 | r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c); |
968f3196 | 762 | if (r >= 0) { |
63c372cb | 763 | x = strjoina("OBJECT_SYSTEMD_CGROUP=", c); |
968f3196 ZJS |
764 | IOVEC_SET_STRING(iovec[n++], x); |
765 | ||
766 | r = cg_path_get_session(c, &t); | |
767 | if (r >= 0) { | |
63c372cb | 768 | x = strjoina("OBJECT_SYSTEMD_SESSION=", t); |
968f3196 ZJS |
769 | free(t); |
770 | IOVEC_SET_STRING(iovec[n++], x); | |
771 | } | |
772 | ||
773 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
de0671ee | 774 | sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner); |
968f3196 ZJS |
775 | IOVEC_SET_STRING(iovec[n++], o_owner_uid); |
776 | } | |
777 | ||
778 | if (cg_path_get_unit(c, &t) >= 0) { | |
63c372cb | 779 | x = strjoina("OBJECT_SYSTEMD_UNIT=", t); |
968f3196 | 780 | free(t); |
19cace37 LP |
781 | IOVEC_SET_STRING(iovec[n++], x); |
782 | } | |
783 | ||
784 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 785 | x = strjoina("OBJECT_SYSTEMD_USER_UNIT=", t); |
968f3196 | 786 | free(t); |
968f3196 | 787 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 788 | } |
968f3196 ZJS |
789 | |
790 | free(c); | |
791 | } | |
792 | } | |
793 | assert(n <= m); | |
d025f1e4 ZJS |
794 | |
795 | if (tv) { | |
ae018d9b | 796 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv)); |
a5693989 | 797 | IOVEC_SET_STRING(iovec[n++], source_time); |
d025f1e4 ZJS |
798 | } |
799 | ||
800 | /* Note that strictly speaking storing the boot id here is | |
801 | * redundant since the entry includes this in-line | |
802 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 LP |
803 | if (!isempty(s->boot_id_field)) |
804 | IOVEC_SET_STRING(iovec[n++], s->boot_id_field); | |
d025f1e4 | 805 | |
0c24bb23 LP |
806 | if (!isempty(s->machine_id_field)) |
807 | IOVEC_SET_STRING(iovec[n++], s->machine_id_field); | |
d025f1e4 | 808 | |
0c24bb23 LP |
809 | if (!isempty(s->hostname_field)) |
810 | IOVEC_SET_STRING(iovec[n++], s->hostname_field); | |
d025f1e4 ZJS |
811 | |
812 | assert(n <= m); | |
813 | ||
da499392 | 814 | if (s->split_mode == SPLIT_UID && realuid > 0) |
40adcda8 | 815 | /* Split up strictly by any UID */ |
759c945a | 816 | journal_uid = realuid; |
82499507 | 817 | else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0) |
edc3797f LP |
818 | /* Split up by login UIDs. We do this only if the |
819 | * realuid is not root, in order not to accidentally | |
820 | * leak privileged information to the user that is | |
821 | * logged by a privileged process that is part of an | |
7517e174 | 822 | * unprivileged session. */ |
8a0889df | 823 | journal_uid = owner; |
da499392 KS |
824 | else |
825 | journal_uid = 0; | |
759c945a | 826 | |
d07f7b9e | 827 | write_to_journal(s, journal_uid, iovec, n, priority); |
d025f1e4 ZJS |
828 | } |
829 | ||
830 | void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) { | |
831 | char mid[11 + 32 + 1]; | |
832 | char buffer[16 + LINE_MAX + 1]; | |
b6fa2555 | 833 | struct iovec iovec[N_IOVEC_META_FIELDS + 6]; |
d025f1e4 ZJS |
834 | int n = 0; |
835 | va_list ap; | |
b92bea5d | 836 | struct ucred ucred = {}; |
d025f1e4 ZJS |
837 | |
838 | assert(s); | |
839 | assert(format); | |
840 | ||
b6fa2555 EV |
841 | IOVEC_SET_STRING(iovec[n++], "SYSLOG_FACILITY=3"); |
842 | IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=systemd-journald"); | |
843 | ||
d025f1e4 ZJS |
844 | IOVEC_SET_STRING(iovec[n++], "PRIORITY=6"); |
845 | IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver"); | |
846 | ||
847 | memcpy(buffer, "MESSAGE=", 8); | |
848 | va_start(ap, format); | |
849 | vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap); | |
850 | va_end(ap); | |
d025f1e4 ZJS |
851 | IOVEC_SET_STRING(iovec[n++], buffer); |
852 | ||
853 | if (!sd_id128_equal(message_id, SD_ID128_NULL)) { | |
e2cc6eca | 854 | snprintf(mid, sizeof(mid), LOG_MESSAGE_ID(message_id)); |
d025f1e4 ZJS |
855 | IOVEC_SET_STRING(iovec[n++], mid); |
856 | } | |
857 | ||
d025f1e4 ZJS |
858 | ucred.pid = getpid(); |
859 | ucred.uid = getuid(); | |
860 | ucred.gid = getgid(); | |
861 | ||
d07f7b9e | 862 | dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL, LOG_INFO, 0); |
d025f1e4 ZJS |
863 | } |
864 | ||
865 | void server_dispatch_message( | |
866 | Server *s, | |
867 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
868 | const struct ucred *ucred, |
869 | const struct timeval *tv, | |
d025f1e4 ZJS |
870 | const char *label, size_t label_len, |
871 | const char *unit_id, | |
968f3196 ZJS |
872 | int priority, |
873 | pid_t object_pid) { | |
d025f1e4 | 874 | |
7027ff61 | 875 | int rl, r; |
7fd1b19b | 876 | _cleanup_free_ char *path = NULL; |
8580d1f7 | 877 | uint64_t available = 0; |
db91ea32 | 878 | char *c; |
d025f1e4 ZJS |
879 | |
880 | assert(s); | |
881 | assert(iovec || n == 0); | |
882 | ||
883 | if (n == 0) | |
884 | return; | |
885 | ||
886 | if (LOG_PRI(priority) > s->max_level_store) | |
887 | return; | |
888 | ||
2f5df74a HHPF |
889 | /* Stop early in case the information will not be stored |
890 | * in a journal. */ | |
891 | if (s->storage == STORAGE_NONE) | |
892 | return; | |
893 | ||
d025f1e4 ZJS |
894 | if (!ucred) |
895 | goto finish; | |
896 | ||
e9174f29 | 897 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path); |
7027ff61 | 898 | if (r < 0) |
d025f1e4 ZJS |
899 | goto finish; |
900 | ||
901 | /* example: /user/lennart/3/foobar | |
902 | * /system/dbus.service/foobar | |
903 | * | |
904 | * So let's cut of everything past the third /, since that is | |
905 | * where user directories start */ | |
906 | ||
907 | c = strchr(path, '/'); | |
908 | if (c) { | |
909 | c = strchr(c+1, '/'); | |
910 | if (c) { | |
911 | c = strchr(c+1, '/'); | |
912 | if (c) | |
913 | *c = 0; | |
914 | } | |
915 | } | |
916 | ||
8580d1f7 LP |
917 | (void) determine_space(s, false, false, &available, NULL); |
918 | rl = journal_rate_limit_test(s->rate_limit, path, priority & LOG_PRIMASK, available); | |
db91ea32 | 919 | if (rl == 0) |
d025f1e4 | 920 | return; |
d025f1e4 ZJS |
921 | |
922 | /* Write a suppression message if we suppressed something */ | |
923 | if (rl > 1) | |
db91ea32 ZJS |
924 | server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, |
925 | "Suppressed %u messages from %s", rl - 1, path); | |
d025f1e4 ZJS |
926 | |
927 | finish: | |
d07f7b9e | 928 | dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id, priority, object_pid); |
d025f1e4 ZJS |
929 | } |
930 | ||
931 | ||
caa2f4c0 | 932 | static int system_journal_open(Server *s, bool flush_requested) { |
84267e40 | 933 | const char *fn; |
09eba4d4 | 934 | int r = 0; |
d025f1e4 ZJS |
935 | |
936 | if (!s->system_journal && | |
937 | (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) && | |
caa2f4c0 ZJS |
938 | (flush_requested |
939 | || access("/run/systemd/journal/flushed", F_OK) >= 0)) { | |
d025f1e4 ZJS |
940 | |
941 | /* If in auto mode: first try to create the machine | |
942 | * path, but not the prefix. | |
943 | * | |
944 | * If in persistent mode: create /var/log/journal and | |
945 | * the machine path */ | |
946 | ||
947 | if (s->storage == STORAGE_PERSISTENT) | |
ac892057 | 948 | (void) mkdir_p("/var/log/journal/", 0755); |
d025f1e4 | 949 | |
8580d1f7 | 950 | fn = strjoina("/var/log/journal/", SERVER_MACHINE_ID(s)); |
d025f1e4 | 951 | (void) mkdir(fn, 0755); |
d025f1e4 | 952 | |
63c372cb | 953 | fn = strjoina(fn, "/system.journal"); |
d025f1e4 | 954 | 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 | 955 | if (r >= 0) { |
d025f1e4 | 956 | server_fix_perms(s, s->system_journal, 0); |
8580d1f7 LP |
957 | (void) determine_space_for(s, &s->system_metrics, "/var/log/journal/", "System journal", true, true, NULL, NULL); |
958 | } else if (r < 0) { | |
433dd100 | 959 | if (r != -ENOENT && r != -EROFS) |
da927ba9 | 960 | log_warning_errno(r, "Failed to open system journal: %m"); |
e40ec7ae | 961 | |
433dd100 LN |
962 | r = 0; |
963 | } | |
d025f1e4 ZJS |
964 | } |
965 | ||
966 | if (!s->runtime_journal && | |
967 | (s->storage != STORAGE_NONE)) { | |
968 | ||
8580d1f7 | 969 | fn = strjoina("/run/log/journal/", SERVER_MACHINE_ID(s), "/system.journal"); |
d025f1e4 ZJS |
970 | |
971 | if (s->system_journal) { | |
972 | ||
973 | /* Try to open the runtime journal, but only | |
974 | * if it already exists, so that we can flush | |
975 | * it into the system journal */ | |
976 | ||
977 | r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); | |
d025f1e4 ZJS |
978 | if (r < 0) { |
979 | if (r != -ENOENT) | |
da927ba9 | 980 | log_warning_errno(r, "Failed to open runtime journal: %m"); |
d025f1e4 ZJS |
981 | |
982 | r = 0; | |
983 | } | |
984 | ||
985 | } else { | |
986 | ||
987 | /* OK, we really need the runtime journal, so create | |
988 | * it if necessary. */ | |
989 | ||
fc1d70af LP |
990 | (void) mkdir("/run/log", 0755); |
991 | (void) mkdir("/run/log/journal", 0755); | |
992 | (void) mkdir_parents(fn, 0750); | |
993 | ||
d025f1e4 | 994 | 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 |
995 | if (r < 0) |
996 | return log_error_errno(r, "Failed to open runtime journal: %m"); | |
d025f1e4 ZJS |
997 | } |
998 | ||
8580d1f7 | 999 | if (s->runtime_journal) { |
d025f1e4 | 1000 | server_fix_perms(s, s->runtime_journal, 0); |
8580d1f7 LP |
1001 | (void) determine_space_for(s, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", true, true, NULL, NULL); |
1002 | } | |
d025f1e4 ZJS |
1003 | } |
1004 | ||
1005 | return r; | |
1006 | } | |
1007 | ||
1008 | int server_flush_to_var(Server *s) { | |
d025f1e4 ZJS |
1009 | sd_id128_t machine; |
1010 | sd_journal *j = NULL; | |
fbb63411 LP |
1011 | char ts[FORMAT_TIMESPAN_MAX]; |
1012 | usec_t start; | |
1013 | unsigned n = 0; | |
1014 | int r; | |
d025f1e4 ZJS |
1015 | |
1016 | assert(s); | |
1017 | ||
1018 | if (s->storage != STORAGE_AUTO && | |
1019 | s->storage != STORAGE_PERSISTENT) | |
1020 | return 0; | |
1021 | ||
1022 | if (!s->runtime_journal) | |
1023 | return 0; | |
1024 | ||
8580d1f7 | 1025 | (void) system_journal_open(s, true); |
d025f1e4 ZJS |
1026 | |
1027 | if (!s->system_journal) | |
1028 | return 0; | |
1029 | ||
1030 | log_debug("Flushing to /var..."); | |
1031 | ||
fbb63411 LP |
1032 | start = now(CLOCK_MONOTONIC); |
1033 | ||
d025f1e4 | 1034 | r = sd_id128_get_machine(&machine); |
00a16861 | 1035 | if (r < 0) |
d025f1e4 | 1036 | return r; |
d025f1e4 ZJS |
1037 | |
1038 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
23bbb0de MS |
1039 | if (r < 0) |
1040 | return log_error_errno(r, "Failed to read runtime journal: %m"); | |
d025f1e4 | 1041 | |
93b73b06 LP |
1042 | sd_journal_set_data_threshold(j, 0); |
1043 | ||
d025f1e4 ZJS |
1044 | SD_JOURNAL_FOREACH(j) { |
1045 | Object *o = NULL; | |
1046 | JournalFile *f; | |
1047 | ||
1048 | f = j->current_file; | |
1049 | assert(f && f->current_offset > 0); | |
1050 | ||
fbb63411 LP |
1051 | n++; |
1052 | ||
d025f1e4 ZJS |
1053 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1054 | if (r < 0) { | |
da927ba9 | 1055 | log_error_errno(r, "Can't read entry: %m"); |
d025f1e4 ZJS |
1056 | goto finish; |
1057 | } | |
1058 | ||
1059 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1060 | if (r >= 0) | |
1061 | continue; | |
1062 | ||
1063 | if (!shall_try_append_again(s->system_journal, r)) { | |
da927ba9 | 1064 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1065 | goto finish; |
1066 | } | |
1067 | ||
1068 | server_rotate(s); | |
8580d1f7 | 1069 | server_vacuum(s, false, false); |
d025f1e4 | 1070 | |
253f59df LP |
1071 | if (!s->system_journal) { |
1072 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1073 | r = -EIO; | |
1074 | goto finish; | |
1075 | } | |
1076 | ||
d025f1e4 ZJS |
1077 | log_debug("Retrying write."); |
1078 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1079 | if (r < 0) { | |
da927ba9 | 1080 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1081 | goto finish; |
1082 | } | |
1083 | } | |
1084 | ||
804ae586 LP |
1085 | r = 0; |
1086 | ||
d025f1e4 ZJS |
1087 | finish: |
1088 | journal_file_post_change(s->system_journal); | |
1089 | ||
804ae586 | 1090 | s->runtime_journal = journal_file_close(s->runtime_journal); |
d025f1e4 ZJS |
1091 | |
1092 | if (r >= 0) | |
c6878637 | 1093 | (void) rm_rf("/run/log/journal", REMOVE_ROOT); |
d025f1e4 | 1094 | |
763c7aa2 | 1095 | sd_journal_close(j); |
d025f1e4 | 1096 | |
fbb63411 LP |
1097 | 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); |
1098 | ||
d025f1e4 ZJS |
1099 | return r; |
1100 | } | |
1101 | ||
8531ae70 | 1102 | int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
f9a810be | 1103 | Server *s = userdata; |
a315ac4e LP |
1104 | struct ucred *ucred = NULL; |
1105 | struct timeval *tv = NULL; | |
1106 | struct cmsghdr *cmsg; | |
1107 | char *label = NULL; | |
1108 | size_t label_len = 0, m; | |
1109 | struct iovec iovec; | |
1110 | ssize_t n; | |
1111 | int *fds = NULL, v = 0; | |
1112 | unsigned n_fds = 0; | |
1113 | ||
1114 | union { | |
1115 | struct cmsghdr cmsghdr; | |
1116 | ||
1117 | /* We use NAME_MAX space for the SELinux label | |
1118 | * here. The kernel currently enforces no | |
1119 | * limit, but according to suggestions from | |
1120 | * the SELinux people this will change and it | |
1121 | * will probably be identical to NAME_MAX. For | |
1122 | * now we use that, but this should be updated | |
1123 | * one day when the final limit is known. */ | |
1124 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1125 | CMSG_SPACE(sizeof(struct timeval)) + | |
1126 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1127 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1128 | } control = {}; | |
1129 | ||
1130 | union sockaddr_union sa = {}; | |
1131 | ||
1132 | struct msghdr msghdr = { | |
1133 | .msg_iov = &iovec, | |
1134 | .msg_iovlen = 1, | |
1135 | .msg_control = &control, | |
1136 | .msg_controllen = sizeof(control), | |
1137 | .msg_name = &sa, | |
1138 | .msg_namelen = sizeof(sa), | |
1139 | }; | |
f9a810be | 1140 | |
d025f1e4 | 1141 | assert(s); |
875c2e22 | 1142 | assert(fd == s->native_fd || fd == s->syslog_fd || fd == s->audit_fd); |
f9a810be LP |
1143 | |
1144 | if (revents != EPOLLIN) { | |
1145 | log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents); | |
1146 | return -EIO; | |
1147 | } | |
1148 | ||
a315ac4e LP |
1149 | /* Try to get the right size, if we can. (Not all |
1150 | * sockets support SIOCINQ, hence we just try, but | |
1151 | * don't rely on it. */ | |
1152 | (void) ioctl(fd, SIOCINQ, &v); | |
d025f1e4 | 1153 | |
a315ac4e LP |
1154 | /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */ |
1155 | m = PAGE_ALIGN(MAX3((size_t) v + 1, | |
1156 | (size_t) LINE_MAX, | |
1157 | ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1); | |
d025f1e4 | 1158 | |
a315ac4e LP |
1159 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m)) |
1160 | return log_oom(); | |
875c2e22 | 1161 | |
a315ac4e LP |
1162 | iovec.iov_base = s->buffer; |
1163 | iovec.iov_len = s->buffer_size - 1; /* Leave room for trailing NUL we add later */ | |
d025f1e4 | 1164 | |
a315ac4e LP |
1165 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1166 | if (n < 0) { | |
1167 | if (errno == EINTR || errno == EAGAIN) | |
1168 | return 0; | |
875c2e22 | 1169 | |
a315ac4e LP |
1170 | return log_error_errno(errno, "recvmsg() failed: %m"); |
1171 | } | |
875c2e22 | 1172 | |
a315ac4e LP |
1173 | CMSG_FOREACH(cmsg, &msghdr) { |
1174 | ||
1175 | if (cmsg->cmsg_level == SOL_SOCKET && | |
1176 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1177 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) | |
1178 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1179 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1180 | cmsg->cmsg_type == SCM_SECURITY) { | |
1181 | label = (char*) CMSG_DATA(cmsg); | |
1182 | label_len = cmsg->cmsg_len - CMSG_LEN(0); | |
1183 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1184 | cmsg->cmsg_type == SO_TIMESTAMP && | |
1185 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval))) | |
1186 | tv = (struct timeval*) CMSG_DATA(cmsg); | |
1187 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1188 | cmsg->cmsg_type == SCM_RIGHTS) { | |
1189 | fds = (int*) CMSG_DATA(cmsg); | |
1190 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
d025f1e4 | 1191 | } |
a315ac4e | 1192 | } |
d025f1e4 | 1193 | |
a315ac4e LP |
1194 | /* And a trailing NUL, just in case */ |
1195 | s->buffer[n] = 0; | |
1196 | ||
1197 | if (fd == s->syslog_fd) { | |
1198 | if (n > 0 && n_fds == 0) | |
1199 | server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len); | |
1200 | else if (n_fds > 0) | |
1201 | log_warning("Got file descriptors via syslog socket. Ignoring."); | |
1202 | ||
1203 | } else if (fd == s->native_fd) { | |
1204 | if (n > 0 && n_fds == 0) | |
1205 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1206 | else if (n == 0 && n_fds == 1) | |
1207 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1208 | else if (n_fds > 0) | |
1209 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
1210 | ||
1211 | } else { | |
1212 | assert(fd == s->audit_fd); | |
1213 | ||
1214 | if (n > 0 && n_fds == 0) | |
1215 | server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen); | |
1216 | else if (n_fds > 0) | |
1217 | log_warning("Got file descriptors via audit socket. Ignoring."); | |
f9a810be | 1218 | } |
a315ac4e LP |
1219 | |
1220 | close_many(fds, n_fds); | |
1221 | return 0; | |
f9a810be | 1222 | } |
d025f1e4 | 1223 | |
f9a810be LP |
1224 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1225 | Server *s = userdata; | |
d025f1e4 | 1226 | |
f9a810be | 1227 | assert(s); |
d025f1e4 | 1228 | |
f9a810be | 1229 | log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid); |
d025f1e4 | 1230 | |
f9a810be LP |
1231 | server_flush_to_var(s); |
1232 | server_sync(s); | |
8580d1f7 | 1233 | server_vacuum(s, false, false); |
d025f1e4 | 1234 | |
ac5b0c13 | 1235 | (void) touch("/run/systemd/journal/flushed"); |
74055aa7 | 1236 | |
f9a810be LP |
1237 | return 0; |
1238 | } | |
d025f1e4 | 1239 | |
f9a810be LP |
1240 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1241 | Server *s = userdata; | |
d025f1e4 | 1242 | |
f9a810be | 1243 | assert(s); |
d025f1e4 | 1244 | |
f9a810be LP |
1245 | log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid); |
1246 | server_rotate(s); | |
8580d1f7 | 1247 | server_vacuum(s, true, true); |
d025f1e4 | 1248 | |
f9a810be LP |
1249 | return 0; |
1250 | } | |
d025f1e4 | 1251 | |
f9a810be LP |
1252 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1253 | Server *s = userdata; | |
d025f1e4 | 1254 | |
f9a810be | 1255 | assert(s); |
d025f1e4 | 1256 | |
4daf54a8 | 1257 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1258 | |
6203e07a | 1259 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1260 | return 0; |
1261 | } | |
1262 | ||
f9a810be | 1263 | static int setup_signals(Server *s) { |
f9a810be | 1264 | int r; |
d025f1e4 ZJS |
1265 | |
1266 | assert(s); | |
1267 | ||
72c0a2c2 | 1268 | assert(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1) >= 0); |
d025f1e4 | 1269 | |
151b9b96 | 1270 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1271 | if (r < 0) |
1272 | return r; | |
1273 | ||
151b9b96 | 1274 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1275 | if (r < 0) |
1276 | return r; | |
d025f1e4 | 1277 | |
151b9b96 | 1278 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1279 | if (r < 0) |
1280 | return r; | |
d025f1e4 | 1281 | |
151b9b96 | 1282 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1283 | if (r < 0) |
1284 | return r; | |
d025f1e4 ZJS |
1285 | |
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | static int server_parse_proc_cmdline(Server *s) { | |
7fd1b19b | 1290 | _cleanup_free_ char *line = NULL; |
a2a5291b | 1291 | const char *w, *state; |
d025f1e4 | 1292 | size_t l; |
74df0fca | 1293 | int r; |
d025f1e4 | 1294 | |
74df0fca | 1295 | r = proc_cmdline(&line); |
b5884878 | 1296 | if (r < 0) { |
da927ba9 | 1297 | log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m"); |
d025f1e4 | 1298 | return 0; |
b5884878 | 1299 | } |
d025f1e4 ZJS |
1300 | |
1301 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
7fd1b19b | 1302 | _cleanup_free_ char *word; |
d025f1e4 ZJS |
1303 | |
1304 | word = strndup(w, l); | |
db91ea32 ZJS |
1305 | if (!word) |
1306 | return -ENOMEM; | |
d025f1e4 ZJS |
1307 | |
1308 | if (startswith(word, "systemd.journald.forward_to_syslog=")) { | |
1309 | r = parse_boolean(word + 35); | |
1310 | if (r < 0) | |
1311 | log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35); | |
1312 | else | |
1313 | s->forward_to_syslog = r; | |
1314 | } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) { | |
1315 | r = parse_boolean(word + 33); | |
1316 | if (r < 0) | |
1317 | log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33); | |
1318 | else | |
1319 | s->forward_to_kmsg = r; | |
1320 | } else if (startswith(word, "systemd.journald.forward_to_console=")) { | |
1321 | r = parse_boolean(word + 36); | |
1322 | if (r < 0) | |
1323 | log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36); | |
1324 | else | |
1325 | s->forward_to_console = r; | |
40b71e89 ST |
1326 | } else if (startswith(word, "systemd.journald.forward_to_wall=")) { |
1327 | r = parse_boolean(word + 33); | |
1328 | if (r < 0) | |
1329 | log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33); | |
1330 | else | |
1331 | s->forward_to_wall = r; | |
d025f1e4 ZJS |
1332 | } else if (startswith(word, "systemd.journald")) |
1333 | log_warning("Invalid systemd.journald parameter. Ignoring."); | |
d025f1e4 ZJS |
1334 | } |
1335 | ||
804ae586 | 1336 | /* do not warn about state here, since probably systemd already did */ |
db91ea32 | 1337 | return 0; |
d025f1e4 ZJS |
1338 | } |
1339 | ||
1340 | static int server_parse_config_file(Server *s) { | |
d025f1e4 ZJS |
1341 | assert(s); |
1342 | ||
a9edaeff JT |
1343 | return config_parse_many("/etc/systemd/journald.conf", |
1344 | CONF_DIRS_NULSTR("systemd/journald.conf"), | |
1345 | "Journal\0", | |
1346 | config_item_perf_lookup, journald_gperf_lookup, | |
1347 | false, s); | |
d025f1e4 ZJS |
1348 | } |
1349 | ||
f9a810be LP |
1350 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1351 | Server *s = userdata; | |
26687bf8 OS |
1352 | |
1353 | assert(s); | |
1354 | ||
f9a810be | 1355 | server_sync(s); |
26687bf8 OS |
1356 | return 0; |
1357 | } | |
1358 | ||
d07f7b9e | 1359 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1360 | int r; |
1361 | ||
26687bf8 OS |
1362 | assert(s); |
1363 | ||
d07f7b9e LP |
1364 | if (priority <= LOG_CRIT) { |
1365 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1366 | server_sync(s); | |
1367 | return 0; | |
1368 | } | |
1369 | ||
26687bf8 OS |
1370 | if (s->sync_scheduled) |
1371 | return 0; | |
1372 | ||
f9a810be LP |
1373 | if (s->sync_interval_usec > 0) { |
1374 | usec_t when; | |
ca267016 | 1375 | |
6a0f1f6d | 1376 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1377 | if (r < 0) |
1378 | return r; | |
26687bf8 | 1379 | |
f9a810be LP |
1380 | when += s->sync_interval_usec; |
1381 | ||
1382 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1383 | r = sd_event_add_time( |
1384 | s->event, | |
1385 | &s->sync_event_source, | |
1386 | CLOCK_MONOTONIC, | |
1387 | when, 0, | |
1388 | server_dispatch_sync, s); | |
f9a810be LP |
1389 | if (r < 0) |
1390 | return r; | |
1391 | ||
1392 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1393 | } else { | |
1394 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1395 | if (r < 0) | |
1396 | return r; | |
1397 | ||
1398 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1399 | } | |
26687bf8 | 1400 | if (r < 0) |
f9a810be | 1401 | return r; |
26687bf8 | 1402 | |
f9a810be LP |
1403 | s->sync_scheduled = true; |
1404 | } | |
26687bf8 OS |
1405 | |
1406 | return 0; | |
1407 | } | |
1408 | ||
0c24bb23 LP |
1409 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1410 | Server *s = userdata; | |
1411 | ||
1412 | assert(s); | |
1413 | ||
1414 | server_cache_hostname(s); | |
1415 | return 0; | |
1416 | } | |
1417 | ||
1418 | static int server_open_hostname(Server *s) { | |
1419 | int r; | |
1420 | ||
1421 | assert(s); | |
1422 | ||
1423 | s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY); | |
4a62c710 MS |
1424 | if (s->hostname_fd < 0) |
1425 | return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m"); | |
0c24bb23 | 1426 | |
151b9b96 | 1427 | r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s); |
0c24bb23 | 1428 | if (r < 0) { |
28def94c DR |
1429 | /* kernels prior to 3.2 don't support polling this file. Ignore |
1430 | * the failure. */ | |
1431 | if (r == -EPERM) { | |
e53fc357 | 1432 | log_warning_errno(r, "Failed to register hostname fd in event loop, ignoring: %m"); |
03e334a1 | 1433 | s->hostname_fd = safe_close(s->hostname_fd); |
28def94c DR |
1434 | return 0; |
1435 | } | |
1436 | ||
23bbb0de | 1437 | return log_error_errno(r, "Failed to register hostname fd in event loop: %m"); |
0c24bb23 LP |
1438 | } |
1439 | ||
1440 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
23bbb0de MS |
1441 | if (r < 0) |
1442 | return log_error_errno(r, "Failed to adjust priority of host name event source: %m"); | |
0c24bb23 LP |
1443 | |
1444 | return 0; | |
1445 | } | |
1446 | ||
d025f1e4 | 1447 | int server_init(Server *s) { |
13790add | 1448 | _cleanup_fdset_free_ FDSet *fds = NULL; |
d025f1e4 | 1449 | int n, r, fd; |
7d18d348 | 1450 | bool no_sockets; |
d025f1e4 ZJS |
1451 | |
1452 | assert(s); | |
1453 | ||
1454 | zero(*s); | |
875c2e22 | 1455 | s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->audit_fd = s->hostname_fd = -1; |
d025f1e4 ZJS |
1456 | s->compress = true; |
1457 | s->seal = true; | |
1458 | ||
26687bf8 OS |
1459 | s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC; |
1460 | s->sync_scheduled = false; | |
1461 | ||
d025f1e4 ZJS |
1462 | s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL; |
1463 | s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST; | |
1464 | ||
40b71e89 | 1465 | s->forward_to_wall = true; |
d025f1e4 | 1466 | |
e150e820 MB |
1467 | s->max_file_usec = DEFAULT_MAX_FILE_USEC; |
1468 | ||
d025f1e4 ZJS |
1469 | s->max_level_store = LOG_DEBUG; |
1470 | s->max_level_syslog = LOG_DEBUG; | |
1471 | s->max_level_kmsg = LOG_NOTICE; | |
1472 | s->max_level_console = LOG_INFO; | |
40b71e89 | 1473 | s->max_level_wall = LOG_EMERG; |
d025f1e4 | 1474 | |
8580d1f7 LP |
1475 | journal_reset_metrics(&s->system_metrics); |
1476 | journal_reset_metrics(&s->runtime_metrics); | |
d025f1e4 ZJS |
1477 | |
1478 | server_parse_config_file(s); | |
1479 | server_parse_proc_cmdline(s); | |
8580d1f7 | 1480 | |
d288f79f | 1481 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
b1389b0d ZJS |
1482 | log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", |
1483 | s->rate_limit_interval, s->rate_limit_burst); | |
d288f79f ZJS |
1484 | s->rate_limit_interval = s->rate_limit_burst = 0; |
1485 | } | |
d025f1e4 | 1486 | |
8580d1f7 | 1487 | (void) mkdir_p("/run/systemd/journal", 0755); |
d025f1e4 | 1488 | |
43cf8388 | 1489 | s->user_journals = ordered_hashmap_new(NULL); |
d025f1e4 ZJS |
1490 | if (!s->user_journals) |
1491 | return log_oom(); | |
1492 | ||
1493 | s->mmap = mmap_cache_new(); | |
1494 | if (!s->mmap) | |
1495 | return log_oom(); | |
1496 | ||
f9a810be | 1497 | r = sd_event_default(&s->event); |
23bbb0de MS |
1498 | if (r < 0) |
1499 | return log_error_errno(r, "Failed to create event loop: %m"); | |
d025f1e4 | 1500 | |
f9a810be LP |
1501 | sd_event_set_watchdog(s->event, true); |
1502 | ||
d025f1e4 | 1503 | n = sd_listen_fds(true); |
23bbb0de MS |
1504 | if (n < 0) |
1505 | return log_error_errno(n, "Failed to read listening file descriptors from environment: %m"); | |
d025f1e4 ZJS |
1506 | |
1507 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
1508 | ||
1509 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
1510 | ||
1511 | if (s->native_fd >= 0) { | |
1512 | log_error("Too many native sockets passed."); | |
1513 | return -EINVAL; | |
1514 | } | |
1515 | ||
1516 | s->native_fd = fd; | |
1517 | ||
1518 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
1519 | ||
1520 | if (s->stdout_fd >= 0) { | |
1521 | log_error("Too many stdout sockets passed."); | |
1522 | return -EINVAL; | |
1523 | } | |
1524 | ||
1525 | s->stdout_fd = fd; | |
1526 | ||
03ee5c38 LP |
1527 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 || |
1528 | sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) { | |
d025f1e4 ZJS |
1529 | |
1530 | if (s->syslog_fd >= 0) { | |
1531 | log_error("Too many /dev/log sockets passed."); | |
1532 | return -EINVAL; | |
1533 | } | |
1534 | ||
1535 | s->syslog_fd = fd; | |
1536 | ||
875c2e22 LP |
1537 | } else if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
1538 | ||
1539 | if (s->audit_fd >= 0) { | |
1540 | log_error("Too many audit sockets passed."); | |
1541 | return -EINVAL; | |
1542 | } | |
1543 | ||
1544 | s->audit_fd = fd; | |
1545 | ||
4ec3cd73 | 1546 | } else { |
4ec3cd73 | 1547 | |
13790add LP |
1548 | if (!fds) { |
1549 | fds = fdset_new(); | |
1550 | if (!fds) | |
1551 | return log_oom(); | |
1552 | } | |
4ec3cd73 | 1553 | |
13790add LP |
1554 | r = fdset_put(fds, fd); |
1555 | if (r < 0) | |
1556 | return log_oom(); | |
4ec3cd73 | 1557 | } |
d025f1e4 ZJS |
1558 | } |
1559 | ||
15d91bff ZJS |
1560 | /* Try to restore streams, but don't bother if this fails */ |
1561 | (void) server_restore_streams(s, fds); | |
d025f1e4 | 1562 | |
13790add LP |
1563 | if (fdset_size(fds) > 0) { |
1564 | log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds)); | |
1565 | fds = fdset_free(fds); | |
1566 | } | |
1567 | ||
7d18d348 ZJS |
1568 | no_sockets = s->native_fd < 0 && s->stdout_fd < 0 && s->syslog_fd < 0 && s->audit_fd < 0; |
1569 | ||
1570 | /* always open stdout, syslog, native, and kmsg sockets */ | |
37b7affe ZJS |
1571 | |
1572 | /* systemd-journald.socket: /run/systemd/journal/stdout */ | |
15d91bff ZJS |
1573 | r = server_open_stdout_socket(s); |
1574 | if (r < 0) | |
1575 | return r; | |
1576 | ||
37b7affe | 1577 | /* systemd-journald-dev-log.socket: /run/systemd/journal/dev-log */ |
13790add | 1578 | r = server_open_syslog_socket(s); |
d025f1e4 ZJS |
1579 | if (r < 0) |
1580 | return r; | |
1581 | ||
37b7affe | 1582 | /* systemd-journald.socket: /run/systemd/journal/socket */ |
13790add | 1583 | r = server_open_native_socket(s); |
d025f1e4 ZJS |
1584 | if (r < 0) |
1585 | return r; | |
1586 | ||
37b7affe | 1587 | /* /dev/ksmg */ |
d025f1e4 ZJS |
1588 | r = server_open_dev_kmsg(s); |
1589 | if (r < 0) | |
1590 | return r; | |
1591 | ||
7d18d348 ZJS |
1592 | /* Unless we got *some* sockets and not audit, open audit socket */ |
1593 | if (s->audit_fd >= 0 || no_sockets) { | |
1594 | r = server_open_audit(s); | |
1595 | if (r < 0) | |
1596 | return r; | |
1597 | } | |
875c2e22 | 1598 | |
d025f1e4 ZJS |
1599 | r = server_open_kernel_seqnum(s); |
1600 | if (r < 0) | |
1601 | return r; | |
1602 | ||
0c24bb23 LP |
1603 | r = server_open_hostname(s); |
1604 | if (r < 0) | |
1605 | return r; | |
1606 | ||
f9a810be | 1607 | r = setup_signals(s); |
d025f1e4 ZJS |
1608 | if (r < 0) |
1609 | return r; | |
1610 | ||
1611 | s->udev = udev_new(); | |
1612 | if (!s->udev) | |
1613 | return -ENOMEM; | |
1614 | ||
f9a810be | 1615 | s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst); |
d025f1e4 ZJS |
1616 | if (!s->rate_limit) |
1617 | return -ENOMEM; | |
1618 | ||
e9174f29 LP |
1619 | r = cg_get_root_path(&s->cgroup_root); |
1620 | if (r < 0) | |
1621 | return r; | |
1622 | ||
0c24bb23 LP |
1623 | server_cache_hostname(s); |
1624 | server_cache_boot_id(s); | |
1625 | server_cache_machine_id(s); | |
1626 | ||
804ae586 | 1627 | return system_journal_open(s, false); |
d025f1e4 ZJS |
1628 | } |
1629 | ||
1630 | void server_maybe_append_tags(Server *s) { | |
1631 | #ifdef HAVE_GCRYPT | |
1632 | JournalFile *f; | |
1633 | Iterator i; | |
1634 | usec_t n; | |
1635 | ||
1636 | n = now(CLOCK_REALTIME); | |
1637 | ||
1638 | if (s->system_journal) | |
1639 | journal_file_maybe_append_tag(s->system_journal, n); | |
1640 | ||
43cf8388 | 1641 | ORDERED_HASHMAP_FOREACH(f, s->user_journals, i) |
d025f1e4 ZJS |
1642 | journal_file_maybe_append_tag(f, n); |
1643 | #endif | |
1644 | } | |
1645 | ||
1646 | void server_done(Server *s) { | |
1647 | JournalFile *f; | |
1648 | assert(s); | |
1649 | ||
1650 | while (s->stdout_streams) | |
1651 | stdout_stream_free(s->stdout_streams); | |
1652 | ||
1653 | if (s->system_journal) | |
1654 | journal_file_close(s->system_journal); | |
1655 | ||
1656 | if (s->runtime_journal) | |
1657 | journal_file_close(s->runtime_journal); | |
1658 | ||
43cf8388 | 1659 | while ((f = ordered_hashmap_steal_first(s->user_journals))) |
d025f1e4 ZJS |
1660 | journal_file_close(f); |
1661 | ||
43cf8388 | 1662 | ordered_hashmap_free(s->user_journals); |
d025f1e4 | 1663 | |
f9a810be LP |
1664 | sd_event_source_unref(s->syslog_event_source); |
1665 | sd_event_source_unref(s->native_event_source); | |
1666 | sd_event_source_unref(s->stdout_event_source); | |
1667 | sd_event_source_unref(s->dev_kmsg_event_source); | |
875c2e22 | 1668 | sd_event_source_unref(s->audit_event_source); |
f9a810be LP |
1669 | sd_event_source_unref(s->sync_event_source); |
1670 | sd_event_source_unref(s->sigusr1_event_source); | |
1671 | sd_event_source_unref(s->sigusr2_event_source); | |
1672 | sd_event_source_unref(s->sigterm_event_source); | |
1673 | sd_event_source_unref(s->sigint_event_source); | |
0c24bb23 | 1674 | sd_event_source_unref(s->hostname_event_source); |
f9a810be | 1675 | sd_event_unref(s->event); |
d025f1e4 | 1676 | |
03e334a1 LP |
1677 | safe_close(s->syslog_fd); |
1678 | safe_close(s->native_fd); | |
1679 | safe_close(s->stdout_fd); | |
1680 | safe_close(s->dev_kmsg_fd); | |
875c2e22 | 1681 | safe_close(s->audit_fd); |
03e334a1 | 1682 | safe_close(s->hostname_fd); |
0c24bb23 | 1683 | |
d025f1e4 ZJS |
1684 | if (s->rate_limit) |
1685 | journal_rate_limit_free(s->rate_limit); | |
1686 | ||
1687 | if (s->kernel_seqnum) | |
1688 | munmap(s->kernel_seqnum, sizeof(uint64_t)); | |
1689 | ||
1690 | free(s->buffer); | |
1691 | free(s->tty_path); | |
e9174f29 | 1692 | free(s->cgroup_root); |
99d0966e | 1693 | free(s->hostname_field); |
d025f1e4 ZJS |
1694 | |
1695 | if (s->mmap) | |
1696 | mmap_cache_unref(s->mmap); | |
1697 | ||
3e044c49 | 1698 | udev_unref(s->udev); |
d025f1e4 | 1699 | } |
8580d1f7 LP |
1700 | |
1701 | static const char* const storage_table[_STORAGE_MAX] = { | |
1702 | [STORAGE_AUTO] = "auto", | |
1703 | [STORAGE_VOLATILE] = "volatile", | |
1704 | [STORAGE_PERSISTENT] = "persistent", | |
1705 | [STORAGE_NONE] = "none" | |
1706 | }; | |
1707 | ||
1708 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
1709 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
1710 | ||
1711 | static const char* const split_mode_table[_SPLIT_MAX] = { | |
1712 | [SPLIT_LOGIN] = "login", | |
1713 | [SPLIT_UID] = "uid", | |
1714 | [SPLIT_NONE] = "none", | |
1715 | }; | |
1716 | ||
1717 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
1718 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); |