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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 | ||
d025f1e4 | 22 | #include <linux/sockios.h> |
24882e06 LP |
23 | #ifdef HAVE_SELINUX |
24 | #include <selinux/selinux.h> | |
25 | #endif | |
8580d1f7 LP |
26 | #include <sys/ioctl.h> |
27 | #include <sys/mman.h> | |
28 | #include <sys/signalfd.h> | |
29 | #include <sys/statvfs.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 "missing.h" |
43 | #include "mkdir.h" | |
44 | #include "process-util.h" | |
45 | #include "rm-rf.h" | |
46 | #include "selinux-util.h" | |
24882e06 | 47 | #include "signal-util.h" |
8580d1f7 LP |
48 | #include "socket-util.h" |
49 | #include "journal-authenticate.h" | |
50 | #include "journal-file.h" | |
d025f1e4 ZJS |
51 | #include "journal-internal.h" |
52 | #include "journal-vacuum.h" | |
8580d1f7 | 53 | #include "journald-audit.h" |
d025f1e4 | 54 | #include "journald-kmsg.h" |
d025f1e4 | 55 | #include "journald-native.h" |
8580d1f7 | 56 | #include "journald-rate-limit.h" |
74df0fca | 57 | #include "journald-server.h" |
8580d1f7 LP |
58 | #include "journald-stream.h" |
59 | #include "journald-syslog.h" | |
d025f1e4 | 60 | |
d025f1e4 ZJS |
61 | #define USER_JOURNALS_MAX 1024 |
62 | ||
26687bf8 | 63 | #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE) |
7f1ad696 LP |
64 | #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC) |
65 | #define DEFAULT_RATE_LIMIT_BURST 1000 | |
e150e820 | 66 | #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH |
d025f1e4 | 67 | |
8580d1f7 | 68 | #define RECHECK_SPACE_USEC (30*USEC_PER_SEC) |
d025f1e4 | 69 | |
8580d1f7 LP |
70 | static int determine_space_for( |
71 | Server *s, | |
72 | JournalMetrics *metrics, | |
73 | const char *path, | |
74 | const char *name, | |
75 | bool verbose, | |
76 | bool patch_min_use, | |
77 | uint64_t *available, | |
78 | uint64_t *limit) { | |
79 | ||
80 | uint64_t sum = 0, ss_avail, avail; | |
7fd1b19b | 81 | _cleanup_closedir_ DIR *d = NULL; |
8580d1f7 LP |
82 | struct dirent *de; |
83 | struct statvfs ss; | |
84 | const char *p; | |
d025f1e4 | 85 | usec_t ts; |
d025f1e4 | 86 | |
8580d1f7 LP |
87 | assert(s); |
88 | assert(metrics); | |
89 | assert(path); | |
90 | assert(name); | |
d025f1e4 | 91 | |
8580d1f7 | 92 | ts = now(CLOCK_MONOTONIC); |
d025f1e4 | 93 | |
8580d1f7 | 94 | if (!verbose && s->cached_space_timestamp + RECHECK_SPACE_USEC > ts) { |
d025f1e4 | 95 | |
8580d1f7 LP |
96 | if (available) |
97 | *available = s->cached_space_available; | |
98 | if (limit) | |
99 | *limit = s->cached_space_limit; | |
d025f1e4 | 100 | |
d025f1e4 | 101 | return 0; |
8580d1f7 | 102 | } |
d025f1e4 | 103 | |
8580d1f7 | 104 | p = strjoina(path, SERVER_MACHINE_ID(s)); |
d025f1e4 | 105 | d = opendir(p); |
d025f1e4 | 106 | if (!d) |
8580d1f7 | 107 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno, "Failed to open %s: %m", p); |
d025f1e4 ZJS |
108 | |
109 | if (fstatvfs(dirfd(d), &ss) < 0) | |
8580d1f7 | 110 | return log_error_errno(errno, "Failed to fstatvfs(%s): %m", p); |
d025f1e4 | 111 | |
8580d1f7 | 112 | FOREACH_DIRENT_ALL(de, d, break) { |
d025f1e4 | 113 | struct stat st; |
d025f1e4 ZJS |
114 | |
115 | if (!endswith(de->d_name, ".journal") && | |
116 | !endswith(de->d_name, ".journal~")) | |
117 | continue; | |
118 | ||
8580d1f7 LP |
119 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) { |
120 | log_debug_errno(errno, "Failed to stat %s/%s, ignoring: %m", p, de->d_name); | |
d025f1e4 | 121 | continue; |
8580d1f7 | 122 | } |
d025f1e4 ZJS |
123 | |
124 | if (!S_ISREG(st.st_mode)) | |
125 | continue; | |
126 | ||
127 | sum += (uint64_t) st.st_blocks * 512UL; | |
128 | } | |
129 | ||
8580d1f7 LP |
130 | /* If request, then let's bump the min_use limit to the |
131 | * current usage on disk. We do this when starting up and | |
132 | * first opening the journal files. This way sudden spikes in | |
133 | * disk usage will not cause journald to vacuum files without | |
134 | * bounds. Note that this means that only a restart of | |
135 | * journald will make it reset this value. */ | |
d025f1e4 | 136 | |
8580d1f7 LP |
137 | if (patch_min_use) |
138 | metrics->min_use = MAX(metrics->min_use, sum); | |
348ced90 | 139 | |
8580d1f7 LP |
140 | ss_avail = ss.f_bsize * ss.f_bavail; |
141 | avail = LESS_BY(ss_avail, metrics->keep_free); | |
348ced90 | 142 | |
8580d1f7 LP |
143 | s->cached_space_limit = MIN(MAX(sum + avail, metrics->min_use), metrics->max_use); |
144 | s->cached_space_available = LESS_BY(s->cached_space_limit, sum); | |
145 | s->cached_space_timestamp = ts; | |
d025f1e4 | 146 | |
670b110c ZJS |
147 | if (verbose) { |
148 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
8580d1f7 | 149 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX], fb6[FORMAT_BYTES_MAX]; |
670b110c ZJS |
150 | |
151 | server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE, | |
8580d1f7 | 152 | "%s (%s) is currently using %s.\n" |
da2e288b LP |
153 | "Maximum allowed usage is set to %s.\n" |
154 | "Leaving at least %s free (of currently available %s of space).\n" | |
8580d1f7 LP |
155 | "Enforced usage limit is thus %s, of which %s are still available.", |
156 | name, path, | |
670b110c | 157 | format_bytes(fb1, sizeof(fb1), sum), |
8580d1f7 LP |
158 | format_bytes(fb2, sizeof(fb2), metrics->max_use), |
159 | format_bytes(fb3, sizeof(fb3), metrics->keep_free), | |
670b110c | 160 | format_bytes(fb4, sizeof(fb4), ss_avail), |
8580d1f7 LP |
161 | format_bytes(fb5, sizeof(fb5), s->cached_space_limit), |
162 | format_bytes(fb6, sizeof(fb6), s->cached_space_available)); | |
163 | } | |
164 | ||
165 | if (available) | |
166 | *available = s->cached_space_available; | |
167 | if (limit) | |
168 | *limit = s->cached_space_limit; | |
169 | ||
170 | return 1; | |
171 | } | |
172 | ||
173 | static int determine_space(Server *s, bool verbose, bool patch_min_use, uint64_t *available, uint64_t *limit) { | |
174 | JournalMetrics *metrics; | |
175 | const char *path, *name; | |
176 | ||
177 | assert(s); | |
178 | ||
179 | if (s->system_journal) { | |
180 | path = "/var/log/journal/"; | |
181 | metrics = &s->system_metrics; | |
182 | name = "System journal"; | |
183 | } else { | |
184 | path = "/run/log/journal/"; | |
185 | metrics = &s->runtime_metrics; | |
186 | name = "Runtime journal"; | |
670b110c ZJS |
187 | } |
188 | ||
8580d1f7 | 189 | return determine_space_for(s, metrics, path, name, verbose, patch_min_use, available, limit); |
d025f1e4 ZJS |
190 | } |
191 | ||
d025f1e4 ZJS |
192 | void server_fix_perms(Server *s, JournalFile *f, uid_t uid) { |
193 | int r; | |
194 | #ifdef HAVE_ACL | |
0fb39831 | 195 | _cleanup_(acl_freep) acl_t acl = NULL; |
d025f1e4 ZJS |
196 | acl_entry_t entry; |
197 | acl_permset_t permset; | |
198 | #endif | |
199 | ||
200 | assert(f); | |
201 | ||
4608af43 | 202 | r = fchmod(f->fd, 0640); |
d025f1e4 | 203 | if (r < 0) |
65089b82 | 204 | log_warning_errno(errno, "Failed to fix access mode on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
205 | |
206 | #ifdef HAVE_ACL | |
34c10968 | 207 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
208 | return; |
209 | ||
210 | acl = acl_get_fd(f->fd); | |
211 | if (!acl) { | |
56f64d95 | 212 | log_warning_errno(errno, "Failed to read ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
213 | return; |
214 | } | |
215 | ||
216 | r = acl_find_uid(acl, uid, &entry); | |
217 | if (r <= 0) { | |
218 | ||
219 | if (acl_create_entry(&acl, &entry) < 0 || | |
220 | acl_set_tag_type(entry, ACL_USER) < 0 || | |
221 | acl_set_qualifier(entry, &uid) < 0) { | |
56f64d95 | 222 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
0fb39831 | 223 | return; |
d025f1e4 ZJS |
224 | } |
225 | } | |
226 | ||
23ad4dd8 JAS |
227 | /* We do not recalculate the mask unconditionally here, |
228 | * so that the fchmod() mask above stays intact. */ | |
d025f1e4 | 229 | if (acl_get_permset(entry, &permset) < 0 || |
23ad4dd8 JAS |
230 | acl_add_perm(permset, ACL_READ) < 0 || |
231 | calc_acl_mask_if_needed(&acl) < 0) { | |
56f64d95 | 232 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
0fb39831 | 233 | return; |
d025f1e4 ZJS |
234 | } |
235 | ||
236 | if (acl_set_fd(f->fd, acl) < 0) | |
56f64d95 | 237 | log_warning_errno(errno, "Failed to set ACL on %s, ignoring: %m", f->path); |
d025f1e4 | 238 | |
d025f1e4 ZJS |
239 | #endif |
240 | } | |
241 | ||
242 | static JournalFile* find_journal(Server *s, uid_t uid) { | |
ed375beb | 243 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
244 | int r; |
245 | JournalFile *f; | |
246 | sd_id128_t machine; | |
247 | ||
248 | assert(s); | |
249 | ||
250 | /* We split up user logs only on /var, not on /run. If the | |
251 | * runtime file is open, we write to it exclusively, in order | |
252 | * to guarantee proper order as soon as we flush /run to | |
253 | * /var and close the runtime file. */ | |
254 | ||
255 | if (s->runtime_journal) | |
256 | return s->runtime_journal; | |
257 | ||
f7dc3ab9 | 258 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
259 | return s->system_journal; |
260 | ||
261 | r = sd_id128_get_machine(&machine); | |
262 | if (r < 0) | |
263 | return s->system_journal; | |
264 | ||
43cf8388 | 265 | f = ordered_hashmap_get(s->user_journals, UINT32_TO_PTR(uid)); |
d025f1e4 ZJS |
266 | if (f) |
267 | return f; | |
268 | ||
de0671ee ZJS |
269 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
270 | SD_ID128_FORMAT_VAL(machine), uid) < 0) | |
d025f1e4 ZJS |
271 | return s->system_journal; |
272 | ||
43cf8388 | 273 | while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { |
d025f1e4 | 274 | /* Too many open? Then let's close one */ |
43cf8388 | 275 | f = ordered_hashmap_steal_first(s->user_journals); |
d025f1e4 ZJS |
276 | assert(f); |
277 | journal_file_close(f); | |
278 | } | |
279 | ||
cbd67177 | 280 | r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f); |
d025f1e4 ZJS |
281 | if (r < 0) |
282 | return s->system_journal; | |
283 | ||
284 | server_fix_perms(s, f, uid); | |
285 | ||
43cf8388 | 286 | r = ordered_hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f); |
d025f1e4 ZJS |
287 | if (r < 0) { |
288 | journal_file_close(f); | |
289 | return s->system_journal; | |
290 | } | |
291 | ||
292 | return f; | |
293 | } | |
294 | ||
ea69bd41 LP |
295 | static int do_rotate( |
296 | Server *s, | |
297 | JournalFile **f, | |
298 | const char* name, | |
299 | bool seal, | |
300 | uint32_t uid) { | |
301 | ||
fc55baee ZJS |
302 | int r; |
303 | assert(s); | |
304 | ||
305 | if (!*f) | |
306 | return -EINVAL; | |
307 | ||
308 | r = journal_file_rotate(f, s->compress, seal); | |
309 | if (r < 0) | |
310 | if (*f) | |
ea69bd41 | 311 | log_error_errno(r, "Failed to rotate %s: %m", (*f)->path); |
fc55baee | 312 | else |
ea69bd41 | 313 | log_error_errno(r, "Failed to create new %s journal: %m", name); |
fc55baee ZJS |
314 | else |
315 | server_fix_perms(s, *f, uid); | |
2678031a | 316 | |
fc55baee ZJS |
317 | return r; |
318 | } | |
319 | ||
d025f1e4 ZJS |
320 | void server_rotate(Server *s) { |
321 | JournalFile *f; | |
322 | void *k; | |
323 | Iterator i; | |
324 | int r; | |
325 | ||
326 | log_debug("Rotating..."); | |
327 | ||
8580d1f7 LP |
328 | (void) do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
329 | (void) do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 | 330 | |
43cf8388 | 331 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
fc55baee ZJS |
332 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k)); |
333 | if (r >= 0) | |
43cf8388 | 334 | ordered_hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
335 | else if (!f) |
336 | /* Old file has been closed and deallocated */ | |
43cf8388 | 337 | ordered_hashmap_remove(s->user_journals, k); |
d025f1e4 ZJS |
338 | } |
339 | } | |
340 | ||
26687bf8 OS |
341 | void server_sync(Server *s) { |
342 | JournalFile *f; | |
343 | void *k; | |
344 | Iterator i; | |
345 | int r; | |
346 | ||
26687bf8 OS |
347 | if (s->system_journal) { |
348 | r = journal_file_set_offline(s->system_journal); | |
349 | if (r < 0) | |
65089b82 | 350 | log_warning_errno(r, "Failed to sync system journal, ignoring: %m"); |
26687bf8 OS |
351 | } |
352 | ||
43cf8388 | 353 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
26687bf8 OS |
354 | r = journal_file_set_offline(f); |
355 | if (r < 0) | |
65089b82 | 356 | log_warning_errno(r, "Failed to sync user journal, ignoring: %m"); |
26687bf8 OS |
357 | } |
358 | ||
f9a810be LP |
359 | if (s->sync_event_source) { |
360 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
361 | if (r < 0) | |
da927ba9 | 362 | log_error_errno(r, "Failed to disable sync timer source: %m"); |
f9a810be | 363 | } |
26687bf8 OS |
364 | |
365 | s->sync_scheduled = false; | |
366 | } | |
367 | ||
ea69bd41 LP |
368 | static void do_vacuum( |
369 | Server *s, | |
ea69bd41 | 370 | JournalFile *f, |
8580d1f7 LP |
371 | JournalMetrics *metrics, |
372 | const char *path, | |
373 | const char *name, | |
374 | bool verbose, | |
375 | bool patch_min_use) { | |
ea69bd41 LP |
376 | |
377 | const char *p; | |
8580d1f7 | 378 | uint64_t limit; |
63c8666b ZJS |
379 | int r; |
380 | ||
8580d1f7 LP |
381 | assert(s); |
382 | assert(metrics); | |
383 | assert(path); | |
384 | assert(name); | |
385 | ||
63c8666b ZJS |
386 | if (!f) |
387 | return; | |
388 | ||
8580d1f7 LP |
389 | p = strjoina(path, SERVER_MACHINE_ID(s)); |
390 | ||
391 | limit = metrics->max_use; | |
392 | (void) determine_space_for(s, metrics, path, name, verbose, patch_min_use, NULL, &limit); | |
393 | ||
394 | r = journal_directory_vacuum(p, limit, metrics->n_max_files, s->max_retention_usec, &s->oldest_file_usec, verbose); | |
63c8666b | 395 | if (r < 0 && r != -ENOENT) |
8580d1f7 | 396 | log_warning_errno(r, "Failed to vacuum %s, ignoring: %m", p); |
63c8666b ZJS |
397 | } |
398 | ||
8580d1f7 LP |
399 | int server_vacuum(Server *s, bool verbose, bool patch_min_use) { |
400 | assert(s); | |
d025f1e4 ZJS |
401 | |
402 | log_debug("Vacuuming..."); | |
403 | ||
404 | s->oldest_file_usec = 0; | |
405 | ||
8580d1f7 LP |
406 | do_vacuum(s, s->system_journal, &s->system_metrics, "/var/log/journal/", "System journal", verbose, patch_min_use); |
407 | do_vacuum(s, s->runtime_journal, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", verbose, patch_min_use); | |
d025f1e4 | 408 | |
8580d1f7 LP |
409 | s->cached_space_limit = 0; |
410 | s->cached_space_available = 0; | |
411 | s->cached_space_timestamp = 0; | |
d025f1e4 | 412 | |
8580d1f7 | 413 | return 0; |
d025f1e4 ZJS |
414 | } |
415 | ||
0c24bb23 LP |
416 | static void server_cache_machine_id(Server *s) { |
417 | sd_id128_t id; | |
418 | int r; | |
419 | ||
420 | assert(s); | |
421 | ||
422 | r = sd_id128_get_machine(&id); | |
423 | if (r < 0) | |
424 | return; | |
425 | ||
426 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
427 | } | |
428 | ||
429 | static void server_cache_boot_id(Server *s) { | |
430 | sd_id128_t id; | |
431 | int r; | |
432 | ||
433 | assert(s); | |
434 | ||
435 | r = sd_id128_get_boot(&id); | |
436 | if (r < 0) | |
437 | return; | |
438 | ||
439 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
440 | } | |
441 | ||
442 | static void server_cache_hostname(Server *s) { | |
443 | _cleanup_free_ char *t = NULL; | |
444 | char *x; | |
445 | ||
446 | assert(s); | |
447 | ||
448 | t = gethostname_malloc(); | |
449 | if (!t) | |
450 | return; | |
451 | ||
452 | x = strappend("_HOSTNAME=", t); | |
453 | if (!x) | |
454 | return; | |
455 | ||
456 | free(s->hostname_field); | |
457 | s->hostname_field = x; | |
458 | } | |
459 | ||
8531ae70 | 460 | static bool shall_try_append_again(JournalFile *f, int r) { |
d025f1e4 ZJS |
461 | |
462 | /* -E2BIG Hit configured limit | |
463 | -EFBIG Hit fs limit | |
464 | -EDQUOT Quota limit hit | |
465 | -ENOSPC Disk full | |
fa6ac760 | 466 | -EIO I/O error of some kind (mmap) |
d025f1e4 ZJS |
467 | -EHOSTDOWN Other machine |
468 | -EBUSY Unclean shutdown | |
469 | -EPROTONOSUPPORT Unsupported feature | |
470 | -EBADMSG Corrupted | |
471 | -ENODATA Truncated | |
2678031a LP |
472 | -ESHUTDOWN Already archived |
473 | -EIDRM Journal file has been deleted */ | |
d025f1e4 ZJS |
474 | |
475 | if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC) | |
476 | log_debug("%s: Allocation limit reached, rotating.", f->path); | |
477 | else if (r == -EHOSTDOWN) | |
478 | log_info("%s: Journal file from other machine, rotating.", f->path); | |
479 | else if (r == -EBUSY) | |
480 | log_info("%s: Unclean shutdown, rotating.", f->path); | |
481 | else if (r == -EPROTONOSUPPORT) | |
482 | log_info("%s: Unsupported feature, rotating.", f->path); | |
483 | else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN) | |
484 | log_warning("%s: Journal file corrupted, rotating.", f->path); | |
fa6ac760 LP |
485 | else if (r == -EIO) |
486 | log_warning("%s: IO error, rotating.", f->path); | |
2678031a LP |
487 | else if (r == -EIDRM) |
488 | log_warning("%s: Journal file has been deleted, rotating.", f->path); | |
d025f1e4 ZJS |
489 | else |
490 | return false; | |
491 | ||
492 | return true; | |
493 | } | |
494 | ||
d07f7b9e | 495 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) { |
d025f1e4 ZJS |
496 | JournalFile *f; |
497 | bool vacuumed = false; | |
498 | int r; | |
499 | ||
500 | assert(s); | |
501 | assert(iovec); | |
502 | assert(n > 0); | |
503 | ||
504 | f = find_journal(s, uid); | |
505 | if (!f) | |
506 | return; | |
507 | ||
508 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
509 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
510 | server_rotate(s); | |
8580d1f7 | 511 | server_vacuum(s, false, false); |
d025f1e4 ZJS |
512 | vacuumed = true; |
513 | ||
514 | f = find_journal(s, uid); | |
515 | if (!f) | |
516 | return; | |
517 | } | |
518 | ||
519 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
26687bf8 | 520 | if (r >= 0) { |
d07f7b9e | 521 | server_schedule_sync(s, priority); |
d025f1e4 | 522 | return; |
26687bf8 | 523 | } |
d025f1e4 ZJS |
524 | |
525 | if (vacuumed || !shall_try_append_again(f, r)) { | |
8266e1c0 | 526 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); |
d025f1e4 ZJS |
527 | return; |
528 | } | |
529 | ||
530 | server_rotate(s); | |
8580d1f7 | 531 | server_vacuum(s, false, false); |
d025f1e4 ZJS |
532 | |
533 | f = find_journal(s, uid); | |
534 | if (!f) | |
535 | return; | |
536 | ||
537 | log_debug("Retrying write."); | |
538 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
8266e1c0 LP |
539 | if (r < 0) |
540 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); | |
541 | else | |
d07f7b9e | 542 | server_schedule_sync(s, priority); |
d025f1e4 ZJS |
543 | } |
544 | ||
545 | static void dispatch_message_real( | |
546 | Server *s, | |
547 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
548 | const struct ucred *ucred, |
549 | const struct timeval *tv, | |
d025f1e4 | 550 | const char *label, size_t label_len, |
968f3196 | 551 | const char *unit_id, |
d07f7b9e | 552 | int priority, |
968f3196 | 553 | pid_t object_pid) { |
d025f1e4 | 554 | |
968f3196 | 555 | char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)], |
ae018d9b LP |
556 | uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)], |
557 | gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)], | |
558 | owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)], | |
d3789917 | 559 | source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)], |
968f3196 ZJS |
560 | o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)], |
561 | o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)], | |
562 | o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)]; | |
563 | uid_t object_uid; | |
564 | gid_t object_gid; | |
968f3196 | 565 | char *x; |
d025f1e4 | 566 | int r; |
ae018d9b | 567 | char *t, *c; |
82499507 LP |
568 | uid_t realuid = 0, owner = 0, journal_uid; |
569 | bool owner_valid = false; | |
ae018d9b | 570 | #ifdef HAVE_AUDIT |
968f3196 ZJS |
571 | char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], |
572 | audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)], | |
573 | o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], | |
574 | o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)]; | |
ae018d9b LP |
575 | |
576 | uint32_t audit; | |
577 | uid_t loginuid; | |
578 | #endif | |
d025f1e4 ZJS |
579 | |
580 | assert(s); | |
581 | assert(iovec); | |
582 | assert(n > 0); | |
968f3196 | 583 | assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m); |
d025f1e4 ZJS |
584 | |
585 | if (ucred) { | |
d025f1e4 ZJS |
586 | realuid = ucred->uid; |
587 | ||
de0671ee | 588 | sprintf(pid, "_PID="PID_FMT, ucred->pid); |
c2457105 | 589 | IOVEC_SET_STRING(iovec[n++], pid); |
d025f1e4 | 590 | |
de0671ee | 591 | sprintf(uid, "_UID="UID_FMT, ucred->uid); |
c2457105 | 592 | IOVEC_SET_STRING(iovec[n++], uid); |
d025f1e4 | 593 | |
de0671ee | 594 | sprintf(gid, "_GID="GID_FMT, ucred->gid); |
c2457105 | 595 | IOVEC_SET_STRING(iovec[n++], gid); |
d025f1e4 ZJS |
596 | |
597 | r = get_process_comm(ucred->pid, &t); | |
598 | if (r >= 0) { | |
63c372cb | 599 | x = strjoina("_COMM=", t); |
d025f1e4 | 600 | free(t); |
968f3196 | 601 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
602 | } |
603 | ||
604 | r = get_process_exe(ucred->pid, &t); | |
605 | if (r >= 0) { | |
63c372cb | 606 | x = strjoina("_EXE=", t); |
d025f1e4 | 607 | free(t); |
968f3196 | 608 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
609 | } |
610 | ||
9bdbc2e2 | 611 | r = get_process_cmdline(ucred->pid, 0, false, &t); |
d025f1e4 | 612 | if (r >= 0) { |
63c372cb | 613 | x = strjoina("_CMDLINE=", t); |
d025f1e4 | 614 | free(t); |
3a832116 SL |
615 | IOVEC_SET_STRING(iovec[n++], x); |
616 | } | |
617 | ||
618 | r = get_process_capeff(ucred->pid, &t); | |
619 | if (r >= 0) { | |
63c372cb | 620 | x = strjoina("_CAP_EFFECTIVE=", t); |
3a832116 | 621 | free(t); |
968f3196 | 622 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
623 | } |
624 | ||
0a20e3c1 | 625 | #ifdef HAVE_AUDIT |
d025f1e4 | 626 | r = audit_session_from_pid(ucred->pid, &audit); |
ae018d9b | 627 | if (r >= 0) { |
de0671ee | 628 | sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit); |
ae018d9b LP |
629 | IOVEC_SET_STRING(iovec[n++], audit_session); |
630 | } | |
d025f1e4 ZJS |
631 | |
632 | r = audit_loginuid_from_pid(ucred->pid, &loginuid); | |
7027ff61 | 633 | if (r >= 0) { |
de0671ee | 634 | sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid); |
ae018d9b | 635 | IOVEC_SET_STRING(iovec[n++], audit_loginuid); |
d025f1e4 | 636 | } |
ae018d9b | 637 | #endif |
d025f1e4 | 638 | |
e9174f29 | 639 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c); |
7027ff61 | 640 | if (r >= 0) { |
968f3196 ZJS |
641 | char *session = NULL; |
642 | ||
63c372cb | 643 | x = strjoina("_SYSTEMD_CGROUP=", c); |
968f3196 | 644 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 | 645 | |
ae018d9b LP |
646 | r = cg_path_get_session(c, &t); |
647 | if (r >= 0) { | |
63c372cb | 648 | session = strjoina("_SYSTEMD_SESSION=", t); |
ae018d9b | 649 | free(t); |
d025f1e4 | 650 | IOVEC_SET_STRING(iovec[n++], session); |
ae018d9b LP |
651 | } |
652 | ||
653 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
654 | owner_valid = true; | |
d025f1e4 | 655 | |
de0671ee | 656 | sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner); |
d025f1e4 | 657 | IOVEC_SET_STRING(iovec[n++], owner_uid); |
ae018d9b | 658 | } |
d025f1e4 | 659 | |
ae018d9b | 660 | if (cg_path_get_unit(c, &t) >= 0) { |
63c372cb | 661 | x = strjoina("_SYSTEMD_UNIT=", t); |
ae018d9b | 662 | free(t); |
19cace37 LP |
663 | IOVEC_SET_STRING(iovec[n++], x); |
664 | } else if (unit_id && !session) { | |
63c372cb | 665 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
19cace37 LP |
666 | IOVEC_SET_STRING(iovec[n++], x); |
667 | } | |
668 | ||
669 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 670 | x = strjoina("_SYSTEMD_USER_UNIT=", t); |
ae018d9b | 671 | free(t); |
968f3196 | 672 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 673 | } else if (unit_id && session) { |
63c372cb | 674 | x = strjoina("_SYSTEMD_USER_UNIT=", unit_id); |
19cace37 LP |
675 | IOVEC_SET_STRING(iovec[n++], x); |
676 | } | |
ae018d9b | 677 | |
0a244b8e | 678 | if (cg_path_get_slice(c, &t) >= 0) { |
63c372cb | 679 | x = strjoina("_SYSTEMD_SLICE=", t); |
0a244b8e LP |
680 | free(t); |
681 | IOVEC_SET_STRING(iovec[n++], x); | |
682 | } | |
683 | ||
ae018d9b | 684 | free(c); |
2d43b190 | 685 | } else if (unit_id) { |
63c372cb | 686 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
2d43b190 | 687 | IOVEC_SET_STRING(iovec[n++], x); |
ef1673d1 | 688 | } |
d025f1e4 | 689 | |
d025f1e4 | 690 | #ifdef HAVE_SELINUX |
6baa7db0 | 691 | if (mac_selinux_use()) { |
d682b3a7 | 692 | if (label) { |
f8294e41 | 693 | x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1); |
ae018d9b | 694 | |
d682b3a7 LP |
695 | *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0; |
696 | IOVEC_SET_STRING(iovec[n++], x); | |
697 | } else { | |
698 | security_context_t con; | |
d025f1e4 | 699 | |
d682b3a7 | 700 | if (getpidcon(ucred->pid, &con) >= 0) { |
63c372cb | 701 | x = strjoina("_SELINUX_CONTEXT=", con); |
e7ff4e7f | 702 | |
d682b3a7 LP |
703 | freecon(con); |
704 | IOVEC_SET_STRING(iovec[n++], x); | |
705 | } | |
d025f1e4 ZJS |
706 | } |
707 | } | |
708 | #endif | |
709 | } | |
968f3196 ZJS |
710 | assert(n <= m); |
711 | ||
712 | if (object_pid) { | |
713 | r = get_process_uid(object_pid, &object_uid); | |
714 | if (r >= 0) { | |
de0671ee | 715 | sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid); |
968f3196 ZJS |
716 | IOVEC_SET_STRING(iovec[n++], o_uid); |
717 | } | |
718 | ||
719 | r = get_process_gid(object_pid, &object_gid); | |
720 | if (r >= 0) { | |
de0671ee | 721 | sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid); |
968f3196 ZJS |
722 | IOVEC_SET_STRING(iovec[n++], o_gid); |
723 | } | |
724 | ||
725 | r = get_process_comm(object_pid, &t); | |
726 | if (r >= 0) { | |
63c372cb | 727 | x = strjoina("OBJECT_COMM=", t); |
968f3196 ZJS |
728 | free(t); |
729 | IOVEC_SET_STRING(iovec[n++], x); | |
730 | } | |
731 | ||
732 | r = get_process_exe(object_pid, &t); | |
733 | if (r >= 0) { | |
63c372cb | 734 | x = strjoina("OBJECT_EXE=", t); |
968f3196 ZJS |
735 | free(t); |
736 | IOVEC_SET_STRING(iovec[n++], x); | |
737 | } | |
738 | ||
739 | r = get_process_cmdline(object_pid, 0, false, &t); | |
740 | if (r >= 0) { | |
63c372cb | 741 | x = strjoina("OBJECT_CMDLINE=", t); |
968f3196 ZJS |
742 | free(t); |
743 | IOVEC_SET_STRING(iovec[n++], x); | |
744 | } | |
745 | ||
746 | #ifdef HAVE_AUDIT | |
747 | r = audit_session_from_pid(object_pid, &audit); | |
748 | if (r >= 0) { | |
de0671ee | 749 | sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit); |
968f3196 ZJS |
750 | IOVEC_SET_STRING(iovec[n++], o_audit_session); |
751 | } | |
752 | ||
753 | r = audit_loginuid_from_pid(object_pid, &loginuid); | |
754 | if (r >= 0) { | |
de0671ee | 755 | sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid); |
968f3196 ZJS |
756 | IOVEC_SET_STRING(iovec[n++], o_audit_loginuid); |
757 | } | |
758 | #endif | |
759 | ||
e9174f29 | 760 | r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c); |
968f3196 | 761 | if (r >= 0) { |
63c372cb | 762 | x = strjoina("OBJECT_SYSTEMD_CGROUP=", c); |
968f3196 ZJS |
763 | IOVEC_SET_STRING(iovec[n++], x); |
764 | ||
765 | r = cg_path_get_session(c, &t); | |
766 | if (r >= 0) { | |
63c372cb | 767 | x = strjoina("OBJECT_SYSTEMD_SESSION=", t); |
968f3196 ZJS |
768 | free(t); |
769 | IOVEC_SET_STRING(iovec[n++], x); | |
770 | } | |
771 | ||
772 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
de0671ee | 773 | sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner); |
968f3196 ZJS |
774 | IOVEC_SET_STRING(iovec[n++], o_owner_uid); |
775 | } | |
776 | ||
777 | if (cg_path_get_unit(c, &t) >= 0) { | |
63c372cb | 778 | x = strjoina("OBJECT_SYSTEMD_UNIT=", t); |
968f3196 | 779 | free(t); |
19cace37 LP |
780 | IOVEC_SET_STRING(iovec[n++], x); |
781 | } | |
782 | ||
783 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 784 | x = strjoina("OBJECT_SYSTEMD_USER_UNIT=", t); |
968f3196 | 785 | free(t); |
968f3196 | 786 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 787 | } |
968f3196 ZJS |
788 | |
789 | free(c); | |
790 | } | |
791 | } | |
792 | assert(n <= m); | |
d025f1e4 ZJS |
793 | |
794 | if (tv) { | |
ae018d9b | 795 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv)); |
a5693989 | 796 | IOVEC_SET_STRING(iovec[n++], source_time); |
d025f1e4 ZJS |
797 | } |
798 | ||
799 | /* Note that strictly speaking storing the boot id here is | |
800 | * redundant since the entry includes this in-line | |
801 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 LP |
802 | if (!isempty(s->boot_id_field)) |
803 | IOVEC_SET_STRING(iovec[n++], s->boot_id_field); | |
d025f1e4 | 804 | |
0c24bb23 LP |
805 | if (!isempty(s->machine_id_field)) |
806 | IOVEC_SET_STRING(iovec[n++], s->machine_id_field); | |
d025f1e4 | 807 | |
0c24bb23 LP |
808 | if (!isempty(s->hostname_field)) |
809 | IOVEC_SET_STRING(iovec[n++], s->hostname_field); | |
d025f1e4 ZJS |
810 | |
811 | assert(n <= m); | |
812 | ||
da499392 | 813 | if (s->split_mode == SPLIT_UID && realuid > 0) |
40adcda8 | 814 | /* Split up strictly by any UID */ |
759c945a | 815 | journal_uid = realuid; |
82499507 | 816 | else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0) |
edc3797f LP |
817 | /* Split up by login UIDs. We do this only if the |
818 | * realuid is not root, in order not to accidentally | |
819 | * leak privileged information to the user that is | |
820 | * logged by a privileged process that is part of an | |
7517e174 | 821 | * unprivileged session. */ |
8a0889df | 822 | journal_uid = owner; |
da499392 KS |
823 | else |
824 | journal_uid = 0; | |
759c945a | 825 | |
d07f7b9e | 826 | write_to_journal(s, journal_uid, iovec, n, priority); |
d025f1e4 ZJS |
827 | } |
828 | ||
829 | void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) { | |
830 | char mid[11 + 32 + 1]; | |
831 | char buffer[16 + LINE_MAX + 1]; | |
b6fa2555 | 832 | struct iovec iovec[N_IOVEC_META_FIELDS + 6]; |
d025f1e4 ZJS |
833 | int n = 0; |
834 | va_list ap; | |
b92bea5d | 835 | struct ucred ucred = {}; |
d025f1e4 ZJS |
836 | |
837 | assert(s); | |
838 | assert(format); | |
839 | ||
b6fa2555 EV |
840 | IOVEC_SET_STRING(iovec[n++], "SYSLOG_FACILITY=3"); |
841 | IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=systemd-journald"); | |
842 | ||
d025f1e4 ZJS |
843 | IOVEC_SET_STRING(iovec[n++], "PRIORITY=6"); |
844 | IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver"); | |
845 | ||
846 | memcpy(buffer, "MESSAGE=", 8); | |
847 | va_start(ap, format); | |
848 | vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap); | |
849 | va_end(ap); | |
d025f1e4 ZJS |
850 | IOVEC_SET_STRING(iovec[n++], buffer); |
851 | ||
852 | if (!sd_id128_equal(message_id, SD_ID128_NULL)) { | |
e2cc6eca | 853 | snprintf(mid, sizeof(mid), LOG_MESSAGE_ID(message_id)); |
d025f1e4 ZJS |
854 | IOVEC_SET_STRING(iovec[n++], mid); |
855 | } | |
856 | ||
d025f1e4 ZJS |
857 | ucred.pid = getpid(); |
858 | ucred.uid = getuid(); | |
859 | ucred.gid = getgid(); | |
860 | ||
d07f7b9e | 861 | dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL, LOG_INFO, 0); |
d025f1e4 ZJS |
862 | } |
863 | ||
864 | void server_dispatch_message( | |
865 | Server *s, | |
866 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
867 | const struct ucred *ucred, |
868 | const struct timeval *tv, | |
d025f1e4 ZJS |
869 | const char *label, size_t label_len, |
870 | const char *unit_id, | |
968f3196 ZJS |
871 | int priority, |
872 | pid_t object_pid) { | |
d025f1e4 | 873 | |
7027ff61 | 874 | int rl, r; |
7fd1b19b | 875 | _cleanup_free_ char *path = NULL; |
8580d1f7 | 876 | uint64_t available = 0; |
db91ea32 | 877 | char *c; |
d025f1e4 ZJS |
878 | |
879 | assert(s); | |
880 | assert(iovec || n == 0); | |
881 | ||
882 | if (n == 0) | |
883 | return; | |
884 | ||
885 | if (LOG_PRI(priority) > s->max_level_store) | |
886 | return; | |
887 | ||
2f5df74a HHPF |
888 | /* Stop early in case the information will not be stored |
889 | * in a journal. */ | |
890 | if (s->storage == STORAGE_NONE) | |
891 | return; | |
892 | ||
d025f1e4 ZJS |
893 | if (!ucred) |
894 | goto finish; | |
895 | ||
e9174f29 | 896 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path); |
7027ff61 | 897 | if (r < 0) |
d025f1e4 ZJS |
898 | goto finish; |
899 | ||
900 | /* example: /user/lennart/3/foobar | |
901 | * /system/dbus.service/foobar | |
902 | * | |
903 | * So let's cut of everything past the third /, since that is | |
904 | * where user directories start */ | |
905 | ||
906 | c = strchr(path, '/'); | |
907 | if (c) { | |
908 | c = strchr(c+1, '/'); | |
909 | if (c) { | |
910 | c = strchr(c+1, '/'); | |
911 | if (c) | |
912 | *c = 0; | |
913 | } | |
914 | } | |
915 | ||
8580d1f7 LP |
916 | (void) determine_space(s, false, false, &available, NULL); |
917 | rl = journal_rate_limit_test(s->rate_limit, path, priority & LOG_PRIMASK, available); | |
db91ea32 | 918 | if (rl == 0) |
d025f1e4 | 919 | return; |
d025f1e4 ZJS |
920 | |
921 | /* Write a suppression message if we suppressed something */ | |
922 | if (rl > 1) | |
db91ea32 ZJS |
923 | server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, |
924 | "Suppressed %u messages from %s", rl - 1, path); | |
d025f1e4 ZJS |
925 | |
926 | finish: | |
d07f7b9e | 927 | dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id, priority, object_pid); |
d025f1e4 ZJS |
928 | } |
929 | ||
930 | ||
caa2f4c0 | 931 | static int system_journal_open(Server *s, bool flush_requested) { |
84267e40 | 932 | const char *fn; |
8580d1f7 | 933 | int r; |
d025f1e4 ZJS |
934 | |
935 | if (!s->system_journal && | |
936 | (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) && | |
caa2f4c0 ZJS |
937 | (flush_requested |
938 | || access("/run/systemd/journal/flushed", F_OK) >= 0)) { | |
d025f1e4 ZJS |
939 | |
940 | /* If in auto mode: first try to create the machine | |
941 | * path, but not the prefix. | |
942 | * | |
943 | * If in persistent mode: create /var/log/journal and | |
944 | * the machine path */ | |
945 | ||
946 | if (s->storage == STORAGE_PERSISTENT) | |
ac892057 | 947 | (void) mkdir_p("/var/log/journal/", 0755); |
d025f1e4 | 948 | |
8580d1f7 | 949 | fn = strjoina("/var/log/journal/", SERVER_MACHINE_ID(s)); |
d025f1e4 | 950 | (void) mkdir(fn, 0755); |
d025f1e4 | 951 | |
63c372cb | 952 | fn = strjoina(fn, "/system.journal"); |
d025f1e4 | 953 | 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 | 954 | if (r >= 0) { |
d025f1e4 | 955 | server_fix_perms(s, s->system_journal, 0); |
8580d1f7 LP |
956 | (void) determine_space_for(s, &s->system_metrics, "/var/log/journal/", "System journal", true, true, NULL, NULL); |
957 | } else if (r < 0) { | |
433dd100 | 958 | if (r != -ENOENT && r != -EROFS) |
da927ba9 | 959 | log_warning_errno(r, "Failed to open system journal: %m"); |
e40ec7ae | 960 | |
433dd100 LN |
961 | r = 0; |
962 | } | |
d025f1e4 ZJS |
963 | } |
964 | ||
965 | if (!s->runtime_journal && | |
966 | (s->storage != STORAGE_NONE)) { | |
967 | ||
8580d1f7 | 968 | fn = strjoina("/run/log/journal/", SERVER_MACHINE_ID(s), "/system.journal"); |
d025f1e4 ZJS |
969 | |
970 | if (s->system_journal) { | |
971 | ||
972 | /* Try to open the runtime journal, but only | |
973 | * if it already exists, so that we can flush | |
974 | * it into the system journal */ | |
975 | ||
976 | r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); | |
d025f1e4 ZJS |
977 | if (r < 0) { |
978 | if (r != -ENOENT) | |
da927ba9 | 979 | log_warning_errno(r, "Failed to open runtime journal: %m"); |
d025f1e4 ZJS |
980 | |
981 | r = 0; | |
982 | } | |
983 | ||
984 | } else { | |
985 | ||
986 | /* OK, we really need the runtime journal, so create | |
987 | * it if necessary. */ | |
988 | ||
fc1d70af LP |
989 | (void) mkdir("/run/log", 0755); |
990 | (void) mkdir("/run/log/journal", 0755); | |
991 | (void) mkdir_parents(fn, 0750); | |
992 | ||
d025f1e4 | 993 | 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 |
994 | if (r < 0) |
995 | return log_error_errno(r, "Failed to open runtime journal: %m"); | |
d025f1e4 ZJS |
996 | } |
997 | ||
8580d1f7 | 998 | if (s->runtime_journal) { |
d025f1e4 | 999 | server_fix_perms(s, s->runtime_journal, 0); |
8580d1f7 LP |
1000 | (void) determine_space_for(s, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", true, true, NULL, NULL); |
1001 | } | |
d025f1e4 ZJS |
1002 | } |
1003 | ||
1004 | return r; | |
1005 | } | |
1006 | ||
1007 | int server_flush_to_var(Server *s) { | |
d025f1e4 ZJS |
1008 | sd_id128_t machine; |
1009 | sd_journal *j = NULL; | |
fbb63411 LP |
1010 | char ts[FORMAT_TIMESPAN_MAX]; |
1011 | usec_t start; | |
1012 | unsigned n = 0; | |
1013 | int r; | |
d025f1e4 ZJS |
1014 | |
1015 | assert(s); | |
1016 | ||
1017 | if (s->storage != STORAGE_AUTO && | |
1018 | s->storage != STORAGE_PERSISTENT) | |
1019 | return 0; | |
1020 | ||
1021 | if (!s->runtime_journal) | |
1022 | return 0; | |
1023 | ||
8580d1f7 | 1024 | (void) system_journal_open(s, true); |
d025f1e4 ZJS |
1025 | |
1026 | if (!s->system_journal) | |
1027 | return 0; | |
1028 | ||
1029 | log_debug("Flushing to /var..."); | |
1030 | ||
fbb63411 LP |
1031 | start = now(CLOCK_MONOTONIC); |
1032 | ||
d025f1e4 | 1033 | r = sd_id128_get_machine(&machine); |
00a16861 | 1034 | if (r < 0) |
d025f1e4 | 1035 | return r; |
d025f1e4 ZJS |
1036 | |
1037 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
23bbb0de MS |
1038 | if (r < 0) |
1039 | return log_error_errno(r, "Failed to read runtime journal: %m"); | |
d025f1e4 | 1040 | |
93b73b06 LP |
1041 | sd_journal_set_data_threshold(j, 0); |
1042 | ||
d025f1e4 ZJS |
1043 | SD_JOURNAL_FOREACH(j) { |
1044 | Object *o = NULL; | |
1045 | JournalFile *f; | |
1046 | ||
1047 | f = j->current_file; | |
1048 | assert(f && f->current_offset > 0); | |
1049 | ||
fbb63411 LP |
1050 | n++; |
1051 | ||
d025f1e4 ZJS |
1052 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1053 | if (r < 0) { | |
da927ba9 | 1054 | log_error_errno(r, "Can't read entry: %m"); |
d025f1e4 ZJS |
1055 | goto finish; |
1056 | } | |
1057 | ||
1058 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1059 | if (r >= 0) | |
1060 | continue; | |
1061 | ||
1062 | if (!shall_try_append_again(s->system_journal, r)) { | |
da927ba9 | 1063 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1064 | goto finish; |
1065 | } | |
1066 | ||
1067 | server_rotate(s); | |
8580d1f7 | 1068 | server_vacuum(s, false, false); |
d025f1e4 | 1069 | |
253f59df LP |
1070 | if (!s->system_journal) { |
1071 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1072 | r = -EIO; | |
1073 | goto finish; | |
1074 | } | |
1075 | ||
d025f1e4 ZJS |
1076 | log_debug("Retrying write."); |
1077 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1078 | if (r < 0) { | |
da927ba9 | 1079 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1080 | goto finish; |
1081 | } | |
1082 | } | |
1083 | ||
804ae586 LP |
1084 | r = 0; |
1085 | ||
d025f1e4 ZJS |
1086 | finish: |
1087 | journal_file_post_change(s->system_journal); | |
1088 | ||
804ae586 | 1089 | s->runtime_journal = journal_file_close(s->runtime_journal); |
d025f1e4 ZJS |
1090 | |
1091 | if (r >= 0) | |
c6878637 | 1092 | (void) rm_rf("/run/log/journal", REMOVE_ROOT); |
d025f1e4 | 1093 | |
763c7aa2 | 1094 | sd_journal_close(j); |
d025f1e4 | 1095 | |
fbb63411 LP |
1096 | server_driver_message(s, SD_ID128_NULL, "Time spent on flushing to /var is %s for %u entries.", format_timespan(ts, sizeof(ts), now(CLOCK_MONOTONIC) - start, 0), n); |
1097 | ||
d025f1e4 ZJS |
1098 | return r; |
1099 | } | |
1100 | ||
8531ae70 | 1101 | int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
f9a810be | 1102 | Server *s = userdata; |
a315ac4e LP |
1103 | struct ucred *ucred = NULL; |
1104 | struct timeval *tv = NULL; | |
1105 | struct cmsghdr *cmsg; | |
1106 | char *label = NULL; | |
1107 | size_t label_len = 0, m; | |
1108 | struct iovec iovec; | |
1109 | ssize_t n; | |
1110 | int *fds = NULL, v = 0; | |
1111 | unsigned n_fds = 0; | |
1112 | ||
1113 | union { | |
1114 | struct cmsghdr cmsghdr; | |
1115 | ||
1116 | /* We use NAME_MAX space for the SELinux label | |
1117 | * here. The kernel currently enforces no | |
1118 | * limit, but according to suggestions from | |
1119 | * the SELinux people this will change and it | |
1120 | * will probably be identical to NAME_MAX. For | |
1121 | * now we use that, but this should be updated | |
1122 | * one day when the final limit is known. */ | |
1123 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1124 | CMSG_SPACE(sizeof(struct timeval)) + | |
1125 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1126 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1127 | } control = {}; | |
1128 | ||
1129 | union sockaddr_union sa = {}; | |
1130 | ||
1131 | struct msghdr msghdr = { | |
1132 | .msg_iov = &iovec, | |
1133 | .msg_iovlen = 1, | |
1134 | .msg_control = &control, | |
1135 | .msg_controllen = sizeof(control), | |
1136 | .msg_name = &sa, | |
1137 | .msg_namelen = sizeof(sa), | |
1138 | }; | |
f9a810be | 1139 | |
d025f1e4 | 1140 | assert(s); |
875c2e22 | 1141 | assert(fd == s->native_fd || fd == s->syslog_fd || fd == s->audit_fd); |
f9a810be LP |
1142 | |
1143 | if (revents != EPOLLIN) { | |
1144 | log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents); | |
1145 | return -EIO; | |
1146 | } | |
1147 | ||
a315ac4e LP |
1148 | /* Try to get the right size, if we can. (Not all |
1149 | * sockets support SIOCINQ, hence we just try, but | |
1150 | * don't rely on it. */ | |
1151 | (void) ioctl(fd, SIOCINQ, &v); | |
d025f1e4 | 1152 | |
a315ac4e LP |
1153 | /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */ |
1154 | m = PAGE_ALIGN(MAX3((size_t) v + 1, | |
1155 | (size_t) LINE_MAX, | |
1156 | ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1); | |
d025f1e4 | 1157 | |
a315ac4e LP |
1158 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m)) |
1159 | return log_oom(); | |
875c2e22 | 1160 | |
a315ac4e LP |
1161 | iovec.iov_base = s->buffer; |
1162 | iovec.iov_len = s->buffer_size - 1; /* Leave room for trailing NUL we add later */ | |
d025f1e4 | 1163 | |
a315ac4e LP |
1164 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1165 | if (n < 0) { | |
1166 | if (errno == EINTR || errno == EAGAIN) | |
1167 | return 0; | |
875c2e22 | 1168 | |
a315ac4e LP |
1169 | return log_error_errno(errno, "recvmsg() failed: %m"); |
1170 | } | |
875c2e22 | 1171 | |
a315ac4e LP |
1172 | CMSG_FOREACH(cmsg, &msghdr) { |
1173 | ||
1174 | if (cmsg->cmsg_level == SOL_SOCKET && | |
1175 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1176 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) | |
1177 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1178 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1179 | cmsg->cmsg_type == SCM_SECURITY) { | |
1180 | label = (char*) CMSG_DATA(cmsg); | |
1181 | label_len = cmsg->cmsg_len - CMSG_LEN(0); | |
1182 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1183 | cmsg->cmsg_type == SO_TIMESTAMP && | |
1184 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval))) | |
1185 | tv = (struct timeval*) CMSG_DATA(cmsg); | |
1186 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1187 | cmsg->cmsg_type == SCM_RIGHTS) { | |
1188 | fds = (int*) CMSG_DATA(cmsg); | |
1189 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
d025f1e4 | 1190 | } |
a315ac4e | 1191 | } |
d025f1e4 | 1192 | |
a315ac4e LP |
1193 | /* And a trailing NUL, just in case */ |
1194 | s->buffer[n] = 0; | |
1195 | ||
1196 | if (fd == s->syslog_fd) { | |
1197 | if (n > 0 && n_fds == 0) | |
1198 | server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len); | |
1199 | else if (n_fds > 0) | |
1200 | log_warning("Got file descriptors via syslog socket. Ignoring."); | |
1201 | ||
1202 | } else if (fd == s->native_fd) { | |
1203 | if (n > 0 && n_fds == 0) | |
1204 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1205 | else if (n == 0 && n_fds == 1) | |
1206 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1207 | else if (n_fds > 0) | |
1208 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
1209 | ||
1210 | } else { | |
1211 | assert(fd == s->audit_fd); | |
1212 | ||
1213 | if (n > 0 && n_fds == 0) | |
1214 | server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen); | |
1215 | else if (n_fds > 0) | |
1216 | log_warning("Got file descriptors via audit socket. Ignoring."); | |
f9a810be | 1217 | } |
a315ac4e LP |
1218 | |
1219 | close_many(fds, n_fds); | |
1220 | return 0; | |
f9a810be | 1221 | } |
d025f1e4 | 1222 | |
f9a810be LP |
1223 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1224 | Server *s = userdata; | |
d025f1e4 | 1225 | |
f9a810be | 1226 | assert(s); |
d025f1e4 | 1227 | |
f9a810be | 1228 | log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid); |
d025f1e4 | 1229 | |
f9a810be LP |
1230 | server_flush_to_var(s); |
1231 | server_sync(s); | |
8580d1f7 | 1232 | server_vacuum(s, false, false); |
d025f1e4 | 1233 | |
74055aa7 LP |
1234 | touch("/run/systemd/journal/flushed"); |
1235 | ||
f9a810be LP |
1236 | return 0; |
1237 | } | |
d025f1e4 | 1238 | |
f9a810be LP |
1239 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1240 | Server *s = userdata; | |
d025f1e4 | 1241 | |
f9a810be | 1242 | assert(s); |
d025f1e4 | 1243 | |
f9a810be LP |
1244 | log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid); |
1245 | server_rotate(s); | |
8580d1f7 | 1246 | server_vacuum(s, true, true); |
d025f1e4 | 1247 | |
f9a810be LP |
1248 | return 0; |
1249 | } | |
d025f1e4 | 1250 | |
f9a810be LP |
1251 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1252 | Server *s = userdata; | |
d025f1e4 | 1253 | |
f9a810be | 1254 | assert(s); |
d025f1e4 | 1255 | |
4daf54a8 | 1256 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1257 | |
6203e07a | 1258 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1259 | return 0; |
1260 | } | |
1261 | ||
f9a810be | 1262 | static int setup_signals(Server *s) { |
f9a810be | 1263 | int r; |
d025f1e4 ZJS |
1264 | |
1265 | assert(s); | |
1266 | ||
72c0a2c2 | 1267 | assert(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1) >= 0); |
d025f1e4 | 1268 | |
151b9b96 | 1269 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1270 | if (r < 0) |
1271 | return r; | |
1272 | ||
151b9b96 | 1273 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1274 | if (r < 0) |
1275 | return r; | |
d025f1e4 | 1276 | |
151b9b96 | 1277 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1278 | if (r < 0) |
1279 | return r; | |
d025f1e4 | 1280 | |
151b9b96 | 1281 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1282 | if (r < 0) |
1283 | return r; | |
d025f1e4 ZJS |
1284 | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | static int server_parse_proc_cmdline(Server *s) { | |
7fd1b19b | 1289 | _cleanup_free_ char *line = NULL; |
a2a5291b | 1290 | const char *w, *state; |
d025f1e4 | 1291 | size_t l; |
74df0fca | 1292 | int r; |
d025f1e4 | 1293 | |
74df0fca | 1294 | r = proc_cmdline(&line); |
b5884878 | 1295 | if (r < 0) { |
da927ba9 | 1296 | log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m"); |
d025f1e4 | 1297 | return 0; |
b5884878 | 1298 | } |
d025f1e4 ZJS |
1299 | |
1300 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
7fd1b19b | 1301 | _cleanup_free_ char *word; |
d025f1e4 ZJS |
1302 | |
1303 | word = strndup(w, l); | |
db91ea32 ZJS |
1304 | if (!word) |
1305 | return -ENOMEM; | |
d025f1e4 ZJS |
1306 | |
1307 | if (startswith(word, "systemd.journald.forward_to_syslog=")) { | |
1308 | r = parse_boolean(word + 35); | |
1309 | if (r < 0) | |
1310 | log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35); | |
1311 | else | |
1312 | s->forward_to_syslog = r; | |
1313 | } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) { | |
1314 | r = parse_boolean(word + 33); | |
1315 | if (r < 0) | |
1316 | log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33); | |
1317 | else | |
1318 | s->forward_to_kmsg = r; | |
1319 | } else if (startswith(word, "systemd.journald.forward_to_console=")) { | |
1320 | r = parse_boolean(word + 36); | |
1321 | if (r < 0) | |
1322 | log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36); | |
1323 | else | |
1324 | s->forward_to_console = r; | |
40b71e89 ST |
1325 | } else if (startswith(word, "systemd.journald.forward_to_wall=")) { |
1326 | r = parse_boolean(word + 33); | |
1327 | if (r < 0) | |
1328 | log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33); | |
1329 | else | |
1330 | s->forward_to_wall = r; | |
d025f1e4 ZJS |
1331 | } else if (startswith(word, "systemd.journald")) |
1332 | log_warning("Invalid systemd.journald parameter. Ignoring."); | |
d025f1e4 ZJS |
1333 | } |
1334 | ||
804ae586 | 1335 | /* do not warn about state here, since probably systemd already did */ |
db91ea32 | 1336 | return 0; |
d025f1e4 ZJS |
1337 | } |
1338 | ||
1339 | static int server_parse_config_file(Server *s) { | |
d025f1e4 ZJS |
1340 | assert(s); |
1341 | ||
a9edaeff JT |
1342 | return config_parse_many("/etc/systemd/journald.conf", |
1343 | CONF_DIRS_NULSTR("systemd/journald.conf"), | |
1344 | "Journal\0", | |
1345 | config_item_perf_lookup, journald_gperf_lookup, | |
1346 | false, s); | |
d025f1e4 ZJS |
1347 | } |
1348 | ||
f9a810be LP |
1349 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1350 | Server *s = userdata; | |
26687bf8 OS |
1351 | |
1352 | assert(s); | |
1353 | ||
f9a810be | 1354 | server_sync(s); |
26687bf8 OS |
1355 | return 0; |
1356 | } | |
1357 | ||
d07f7b9e | 1358 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1359 | int r; |
1360 | ||
26687bf8 OS |
1361 | assert(s); |
1362 | ||
d07f7b9e LP |
1363 | if (priority <= LOG_CRIT) { |
1364 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1365 | server_sync(s); | |
1366 | return 0; | |
1367 | } | |
1368 | ||
26687bf8 OS |
1369 | if (s->sync_scheduled) |
1370 | return 0; | |
1371 | ||
f9a810be LP |
1372 | if (s->sync_interval_usec > 0) { |
1373 | usec_t when; | |
ca267016 | 1374 | |
6a0f1f6d | 1375 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1376 | if (r < 0) |
1377 | return r; | |
26687bf8 | 1378 | |
f9a810be LP |
1379 | when += s->sync_interval_usec; |
1380 | ||
1381 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1382 | r = sd_event_add_time( |
1383 | s->event, | |
1384 | &s->sync_event_source, | |
1385 | CLOCK_MONOTONIC, | |
1386 | when, 0, | |
1387 | server_dispatch_sync, s); | |
f9a810be LP |
1388 | if (r < 0) |
1389 | return r; | |
1390 | ||
1391 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1392 | } else { | |
1393 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1394 | if (r < 0) | |
1395 | return r; | |
1396 | ||
1397 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1398 | } | |
26687bf8 | 1399 | if (r < 0) |
f9a810be | 1400 | return r; |
26687bf8 | 1401 | |
f9a810be LP |
1402 | s->sync_scheduled = true; |
1403 | } | |
26687bf8 OS |
1404 | |
1405 | return 0; | |
1406 | } | |
1407 | ||
0c24bb23 LP |
1408 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1409 | Server *s = userdata; | |
1410 | ||
1411 | assert(s); | |
1412 | ||
1413 | server_cache_hostname(s); | |
1414 | return 0; | |
1415 | } | |
1416 | ||
1417 | static int server_open_hostname(Server *s) { | |
1418 | int r; | |
1419 | ||
1420 | assert(s); | |
1421 | ||
1422 | s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY); | |
4a62c710 MS |
1423 | if (s->hostname_fd < 0) |
1424 | return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m"); | |
0c24bb23 | 1425 | |
151b9b96 | 1426 | r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s); |
0c24bb23 | 1427 | if (r < 0) { |
28def94c DR |
1428 | /* kernels prior to 3.2 don't support polling this file. Ignore |
1429 | * the failure. */ | |
1430 | if (r == -EPERM) { | |
e53fc357 | 1431 | log_warning_errno(r, "Failed to register hostname fd in event loop, ignoring: %m"); |
03e334a1 | 1432 | s->hostname_fd = safe_close(s->hostname_fd); |
28def94c DR |
1433 | return 0; |
1434 | } | |
1435 | ||
23bbb0de | 1436 | return log_error_errno(r, "Failed to register hostname fd in event loop: %m"); |
0c24bb23 LP |
1437 | } |
1438 | ||
1439 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
23bbb0de MS |
1440 | if (r < 0) |
1441 | return log_error_errno(r, "Failed to adjust priority of host name event source: %m"); | |
0c24bb23 LP |
1442 | |
1443 | return 0; | |
1444 | } | |
1445 | ||
d025f1e4 | 1446 | int server_init(Server *s) { |
13790add | 1447 | _cleanup_fdset_free_ FDSet *fds = NULL; |
d025f1e4 | 1448 | int n, r, fd; |
7d18d348 | 1449 | bool no_sockets; |
d025f1e4 ZJS |
1450 | |
1451 | assert(s); | |
1452 | ||
1453 | zero(*s); | |
875c2e22 | 1454 | s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->audit_fd = s->hostname_fd = -1; |
d025f1e4 ZJS |
1455 | s->compress = true; |
1456 | s->seal = true; | |
1457 | ||
26687bf8 OS |
1458 | s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC; |
1459 | s->sync_scheduled = false; | |
1460 | ||
d025f1e4 ZJS |
1461 | s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL; |
1462 | s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST; | |
1463 | ||
40b71e89 | 1464 | s->forward_to_wall = true; |
d025f1e4 | 1465 | |
e150e820 MB |
1466 | s->max_file_usec = DEFAULT_MAX_FILE_USEC; |
1467 | ||
d025f1e4 ZJS |
1468 | s->max_level_store = LOG_DEBUG; |
1469 | s->max_level_syslog = LOG_DEBUG; | |
1470 | s->max_level_kmsg = LOG_NOTICE; | |
1471 | s->max_level_console = LOG_INFO; | |
40b71e89 | 1472 | s->max_level_wall = LOG_EMERG; |
d025f1e4 | 1473 | |
8580d1f7 LP |
1474 | journal_reset_metrics(&s->system_metrics); |
1475 | journal_reset_metrics(&s->runtime_metrics); | |
d025f1e4 ZJS |
1476 | |
1477 | server_parse_config_file(s); | |
1478 | server_parse_proc_cmdline(s); | |
8580d1f7 | 1479 | |
d288f79f | 1480 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
b1389b0d ZJS |
1481 | log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", |
1482 | s->rate_limit_interval, s->rate_limit_burst); | |
d288f79f ZJS |
1483 | s->rate_limit_interval = s->rate_limit_burst = 0; |
1484 | } | |
d025f1e4 | 1485 | |
8580d1f7 | 1486 | (void) mkdir_p("/run/systemd/journal", 0755); |
d025f1e4 | 1487 | |
43cf8388 | 1488 | s->user_journals = ordered_hashmap_new(NULL); |
d025f1e4 ZJS |
1489 | if (!s->user_journals) |
1490 | return log_oom(); | |
1491 | ||
1492 | s->mmap = mmap_cache_new(); | |
1493 | if (!s->mmap) | |
1494 | return log_oom(); | |
1495 | ||
f9a810be | 1496 | r = sd_event_default(&s->event); |
23bbb0de MS |
1497 | if (r < 0) |
1498 | return log_error_errno(r, "Failed to create event loop: %m"); | |
d025f1e4 | 1499 | |
f9a810be LP |
1500 | sd_event_set_watchdog(s->event, true); |
1501 | ||
d025f1e4 | 1502 | n = sd_listen_fds(true); |
23bbb0de MS |
1503 | if (n < 0) |
1504 | return log_error_errno(n, "Failed to read listening file descriptors from environment: %m"); | |
d025f1e4 ZJS |
1505 | |
1506 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
1507 | ||
1508 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
1509 | ||
1510 | if (s->native_fd >= 0) { | |
1511 | log_error("Too many native sockets passed."); | |
1512 | return -EINVAL; | |
1513 | } | |
1514 | ||
1515 | s->native_fd = fd; | |
1516 | ||
1517 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
1518 | ||
1519 | if (s->stdout_fd >= 0) { | |
1520 | log_error("Too many stdout sockets passed."); | |
1521 | return -EINVAL; | |
1522 | } | |
1523 | ||
1524 | s->stdout_fd = fd; | |
1525 | ||
03ee5c38 LP |
1526 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 || |
1527 | sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) { | |
d025f1e4 ZJS |
1528 | |
1529 | if (s->syslog_fd >= 0) { | |
1530 | log_error("Too many /dev/log sockets passed."); | |
1531 | return -EINVAL; | |
1532 | } | |
1533 | ||
1534 | s->syslog_fd = fd; | |
1535 | ||
875c2e22 LP |
1536 | } else if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
1537 | ||
1538 | if (s->audit_fd >= 0) { | |
1539 | log_error("Too many audit sockets passed."); | |
1540 | return -EINVAL; | |
1541 | } | |
1542 | ||
1543 | s->audit_fd = fd; | |
1544 | ||
4ec3cd73 | 1545 | } else { |
4ec3cd73 | 1546 | |
13790add LP |
1547 | if (!fds) { |
1548 | fds = fdset_new(); | |
1549 | if (!fds) | |
1550 | return log_oom(); | |
1551 | } | |
4ec3cd73 | 1552 | |
13790add LP |
1553 | r = fdset_put(fds, fd); |
1554 | if (r < 0) | |
1555 | return log_oom(); | |
4ec3cd73 | 1556 | } |
d025f1e4 ZJS |
1557 | } |
1558 | ||
15d91bff ZJS |
1559 | /* Try to restore streams, but don't bother if this fails */ |
1560 | (void) server_restore_streams(s, fds); | |
d025f1e4 | 1561 | |
13790add LP |
1562 | if (fdset_size(fds) > 0) { |
1563 | log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds)); | |
1564 | fds = fdset_free(fds); | |
1565 | } | |
1566 | ||
7d18d348 ZJS |
1567 | no_sockets = s->native_fd < 0 && s->stdout_fd < 0 && s->syslog_fd < 0 && s->audit_fd < 0; |
1568 | ||
1569 | /* always open stdout, syslog, native, and kmsg sockets */ | |
37b7affe ZJS |
1570 | |
1571 | /* systemd-journald.socket: /run/systemd/journal/stdout */ | |
15d91bff ZJS |
1572 | r = server_open_stdout_socket(s); |
1573 | if (r < 0) | |
1574 | return r; | |
1575 | ||
37b7affe | 1576 | /* systemd-journald-dev-log.socket: /run/systemd/journal/dev-log */ |
13790add | 1577 | r = server_open_syslog_socket(s); |
d025f1e4 ZJS |
1578 | if (r < 0) |
1579 | return r; | |
1580 | ||
37b7affe | 1581 | /* systemd-journald.socket: /run/systemd/journal/socket */ |
13790add | 1582 | r = server_open_native_socket(s); |
d025f1e4 ZJS |
1583 | if (r < 0) |
1584 | return r; | |
1585 | ||
37b7affe | 1586 | /* /dev/ksmg */ |
d025f1e4 ZJS |
1587 | r = server_open_dev_kmsg(s); |
1588 | if (r < 0) | |
1589 | return r; | |
1590 | ||
7d18d348 ZJS |
1591 | /* Unless we got *some* sockets and not audit, open audit socket */ |
1592 | if (s->audit_fd >= 0 || no_sockets) { | |
1593 | r = server_open_audit(s); | |
1594 | if (r < 0) | |
1595 | return r; | |
1596 | } | |
875c2e22 | 1597 | |
d025f1e4 ZJS |
1598 | r = server_open_kernel_seqnum(s); |
1599 | if (r < 0) | |
1600 | return r; | |
1601 | ||
0c24bb23 LP |
1602 | r = server_open_hostname(s); |
1603 | if (r < 0) | |
1604 | return r; | |
1605 | ||
f9a810be | 1606 | r = setup_signals(s); |
d025f1e4 ZJS |
1607 | if (r < 0) |
1608 | return r; | |
1609 | ||
1610 | s->udev = udev_new(); | |
1611 | if (!s->udev) | |
1612 | return -ENOMEM; | |
1613 | ||
f9a810be | 1614 | s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst); |
d025f1e4 ZJS |
1615 | if (!s->rate_limit) |
1616 | return -ENOMEM; | |
1617 | ||
e9174f29 LP |
1618 | r = cg_get_root_path(&s->cgroup_root); |
1619 | if (r < 0) | |
1620 | return r; | |
1621 | ||
0c24bb23 LP |
1622 | server_cache_hostname(s); |
1623 | server_cache_boot_id(s); | |
1624 | server_cache_machine_id(s); | |
1625 | ||
804ae586 | 1626 | return system_journal_open(s, false); |
d025f1e4 ZJS |
1627 | } |
1628 | ||
1629 | void server_maybe_append_tags(Server *s) { | |
1630 | #ifdef HAVE_GCRYPT | |
1631 | JournalFile *f; | |
1632 | Iterator i; | |
1633 | usec_t n; | |
1634 | ||
1635 | n = now(CLOCK_REALTIME); | |
1636 | ||
1637 | if (s->system_journal) | |
1638 | journal_file_maybe_append_tag(s->system_journal, n); | |
1639 | ||
43cf8388 | 1640 | ORDERED_HASHMAP_FOREACH(f, s->user_journals, i) |
d025f1e4 ZJS |
1641 | journal_file_maybe_append_tag(f, n); |
1642 | #endif | |
1643 | } | |
1644 | ||
1645 | void server_done(Server *s) { | |
1646 | JournalFile *f; | |
1647 | assert(s); | |
1648 | ||
1649 | while (s->stdout_streams) | |
1650 | stdout_stream_free(s->stdout_streams); | |
1651 | ||
1652 | if (s->system_journal) | |
1653 | journal_file_close(s->system_journal); | |
1654 | ||
1655 | if (s->runtime_journal) | |
1656 | journal_file_close(s->runtime_journal); | |
1657 | ||
43cf8388 | 1658 | while ((f = ordered_hashmap_steal_first(s->user_journals))) |
d025f1e4 ZJS |
1659 | journal_file_close(f); |
1660 | ||
43cf8388 | 1661 | ordered_hashmap_free(s->user_journals); |
d025f1e4 | 1662 | |
f9a810be LP |
1663 | sd_event_source_unref(s->syslog_event_source); |
1664 | sd_event_source_unref(s->native_event_source); | |
1665 | sd_event_source_unref(s->stdout_event_source); | |
1666 | sd_event_source_unref(s->dev_kmsg_event_source); | |
875c2e22 | 1667 | sd_event_source_unref(s->audit_event_source); |
f9a810be LP |
1668 | sd_event_source_unref(s->sync_event_source); |
1669 | sd_event_source_unref(s->sigusr1_event_source); | |
1670 | sd_event_source_unref(s->sigusr2_event_source); | |
1671 | sd_event_source_unref(s->sigterm_event_source); | |
1672 | sd_event_source_unref(s->sigint_event_source); | |
0c24bb23 | 1673 | sd_event_source_unref(s->hostname_event_source); |
f9a810be | 1674 | sd_event_unref(s->event); |
d025f1e4 | 1675 | |
03e334a1 LP |
1676 | safe_close(s->syslog_fd); |
1677 | safe_close(s->native_fd); | |
1678 | safe_close(s->stdout_fd); | |
1679 | safe_close(s->dev_kmsg_fd); | |
875c2e22 | 1680 | safe_close(s->audit_fd); |
03e334a1 | 1681 | safe_close(s->hostname_fd); |
0c24bb23 | 1682 | |
d025f1e4 ZJS |
1683 | if (s->rate_limit) |
1684 | journal_rate_limit_free(s->rate_limit); | |
1685 | ||
1686 | if (s->kernel_seqnum) | |
1687 | munmap(s->kernel_seqnum, sizeof(uint64_t)); | |
1688 | ||
1689 | free(s->buffer); | |
1690 | free(s->tty_path); | |
e9174f29 | 1691 | free(s->cgroup_root); |
99d0966e | 1692 | free(s->hostname_field); |
d025f1e4 ZJS |
1693 | |
1694 | if (s->mmap) | |
1695 | mmap_cache_unref(s->mmap); | |
1696 | ||
3e044c49 | 1697 | udev_unref(s->udev); |
d025f1e4 | 1698 | } |
8580d1f7 LP |
1699 | |
1700 | static const char* const storage_table[_STORAGE_MAX] = { | |
1701 | [STORAGE_AUTO] = "auto", | |
1702 | [STORAGE_VOLATILE] = "volatile", | |
1703 | [STORAGE_PERSISTENT] = "persistent", | |
1704 | [STORAGE_NONE] = "none" | |
1705 | }; | |
1706 | ||
1707 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
1708 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
1709 | ||
1710 | static const char* const split_mode_table[_SPLIT_MAX] = { | |
1711 | [SPLIT_LOGIN] = "login", | |
1712 | [SPLIT_UID] = "uid", | |
1713 | [SPLIT_NONE] = "none", | |
1714 | }; | |
1715 | ||
1716 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
1717 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); |