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d025f1e4 ZJS |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
24882e06 LP |
22 | #ifdef HAVE_SELINUX |
23 | #include <selinux/selinux.h> | |
24 | #endif | |
8580d1f7 LP |
25 | #include <sys/ioctl.h> |
26 | #include <sys/mman.h> | |
27 | #include <sys/signalfd.h> | |
28 | #include <sys/statvfs.h> | |
07630cea | 29 | #include <linux/sockios.h> |
24882e06 | 30 | |
8580d1f7 LP |
31 | #include "libudev.h" |
32 | #include "sd-daemon.h" | |
74df0fca LP |
33 | #include "sd-journal.h" |
34 | #include "sd-messages.h" | |
8580d1f7 LP |
35 | |
36 | #include "acl-util.h" | |
430f0182 | 37 | #include "audit-util.h" |
d025f1e4 | 38 | #include "cgroup-util.h" |
d025f1e4 | 39 | #include "conf-parser.h" |
a0956174 | 40 | #include "dirent-util.h" |
0dec689b | 41 | #include "extract-word.h" |
3ffd4af2 | 42 | #include "fd-util.h" |
958b66ea | 43 | #include "formats-util.h" |
f4f15635 | 44 | #include "fs-util.h" |
8580d1f7 | 45 | #include "hashmap.h" |
958b66ea | 46 | #include "hostname-util.h" |
afc5dbf3 | 47 | #include "io-util.h" |
8580d1f7 LP |
48 | #include "journal-authenticate.h" |
49 | #include "journal-file.h" | |
d025f1e4 ZJS |
50 | #include "journal-internal.h" |
51 | #include "journal-vacuum.h" | |
8580d1f7 | 52 | #include "journald-audit.h" |
d025f1e4 | 53 | #include "journald-kmsg.h" |
d025f1e4 | 54 | #include "journald-native.h" |
8580d1f7 | 55 | #include "journald-rate-limit.h" |
3ffd4af2 | 56 | #include "journald-server.h" |
8580d1f7 LP |
57 | #include "journald-stream.h" |
58 | #include "journald-syslog.h" | |
07630cea LP |
59 | #include "missing.h" |
60 | #include "mkdir.h" | |
6bedfcbb | 61 | #include "parse-util.h" |
4e731273 | 62 | #include "proc-cmdline.h" |
07630cea LP |
63 | #include "process-util.h" |
64 | #include "rm-rf.h" | |
65 | #include "selinux-util.h" | |
66 | #include "signal-util.h" | |
67 | #include "socket-util.h" | |
8b43440b | 68 | #include "string-table.h" |
07630cea | 69 | #include "string-util.h" |
d025f1e4 | 70 | |
d025f1e4 ZJS |
71 | #define USER_JOURNALS_MAX 1024 |
72 | ||
26687bf8 | 73 | #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE) |
7f1ad696 LP |
74 | #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC) |
75 | #define DEFAULT_RATE_LIMIT_BURST 1000 | |
e150e820 | 76 | #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH |
d025f1e4 | 77 | |
8580d1f7 | 78 | #define RECHECK_SPACE_USEC (30*USEC_PER_SEC) |
d025f1e4 | 79 | |
8580d1f7 LP |
80 | static int determine_space_for( |
81 | Server *s, | |
82 | JournalMetrics *metrics, | |
83 | const char *path, | |
84 | const char *name, | |
85 | bool verbose, | |
86 | bool patch_min_use, | |
87 | uint64_t *available, | |
88 | uint64_t *limit) { | |
89 | ||
90 | uint64_t sum = 0, ss_avail, avail; | |
7fd1b19b | 91 | _cleanup_closedir_ DIR *d = NULL; |
8580d1f7 LP |
92 | struct dirent *de; |
93 | struct statvfs ss; | |
94 | const char *p; | |
d025f1e4 | 95 | usec_t ts; |
d025f1e4 | 96 | |
8580d1f7 LP |
97 | assert(s); |
98 | assert(metrics); | |
99 | assert(path); | |
100 | assert(name); | |
d025f1e4 | 101 | |
8580d1f7 | 102 | ts = now(CLOCK_MONOTONIC); |
d025f1e4 | 103 | |
8580d1f7 | 104 | if (!verbose && s->cached_space_timestamp + RECHECK_SPACE_USEC > ts) { |
d025f1e4 | 105 | |
8580d1f7 LP |
106 | if (available) |
107 | *available = s->cached_space_available; | |
108 | if (limit) | |
109 | *limit = s->cached_space_limit; | |
d025f1e4 | 110 | |
d025f1e4 | 111 | return 0; |
8580d1f7 | 112 | } |
d025f1e4 | 113 | |
8580d1f7 | 114 | p = strjoina(path, SERVER_MACHINE_ID(s)); |
d025f1e4 | 115 | d = opendir(p); |
d025f1e4 | 116 | if (!d) |
8580d1f7 | 117 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno, "Failed to open %s: %m", p); |
d025f1e4 ZJS |
118 | |
119 | if (fstatvfs(dirfd(d), &ss) < 0) | |
8580d1f7 | 120 | return log_error_errno(errno, "Failed to fstatvfs(%s): %m", p); |
d025f1e4 | 121 | |
8580d1f7 | 122 | FOREACH_DIRENT_ALL(de, d, break) { |
d025f1e4 | 123 | struct stat st; |
d025f1e4 ZJS |
124 | |
125 | if (!endswith(de->d_name, ".journal") && | |
126 | !endswith(de->d_name, ".journal~")) | |
127 | continue; | |
128 | ||
8580d1f7 LP |
129 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) { |
130 | log_debug_errno(errno, "Failed to stat %s/%s, ignoring: %m", p, de->d_name); | |
d025f1e4 | 131 | continue; |
8580d1f7 | 132 | } |
d025f1e4 ZJS |
133 | |
134 | if (!S_ISREG(st.st_mode)) | |
135 | continue; | |
136 | ||
137 | sum += (uint64_t) st.st_blocks * 512UL; | |
138 | } | |
139 | ||
8580d1f7 LP |
140 | /* If request, then let's bump the min_use limit to the |
141 | * current usage on disk. We do this when starting up and | |
142 | * first opening the journal files. This way sudden spikes in | |
143 | * disk usage will not cause journald to vacuum files without | |
144 | * bounds. Note that this means that only a restart of | |
145 | * journald will make it reset this value. */ | |
d025f1e4 | 146 | |
8580d1f7 LP |
147 | if (patch_min_use) |
148 | metrics->min_use = MAX(metrics->min_use, sum); | |
348ced90 | 149 | |
8580d1f7 LP |
150 | ss_avail = ss.f_bsize * ss.f_bavail; |
151 | avail = LESS_BY(ss_avail, metrics->keep_free); | |
348ced90 | 152 | |
8580d1f7 LP |
153 | s->cached_space_limit = MIN(MAX(sum + avail, metrics->min_use), metrics->max_use); |
154 | s->cached_space_available = LESS_BY(s->cached_space_limit, sum); | |
155 | s->cached_space_timestamp = ts; | |
d025f1e4 | 156 | |
670b110c ZJS |
157 | if (verbose) { |
158 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
8580d1f7 | 159 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX], fb6[FORMAT_BYTES_MAX]; |
670b110c ZJS |
160 | |
161 | server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE, | |
8580d1f7 | 162 | "%s (%s) is currently using %s.\n" |
da2e288b LP |
163 | "Maximum allowed usage is set to %s.\n" |
164 | "Leaving at least %s free (of currently available %s of space).\n" | |
8580d1f7 LP |
165 | "Enforced usage limit is thus %s, of which %s are still available.", |
166 | name, path, | |
670b110c | 167 | format_bytes(fb1, sizeof(fb1), sum), |
8580d1f7 LP |
168 | format_bytes(fb2, sizeof(fb2), metrics->max_use), |
169 | format_bytes(fb3, sizeof(fb3), metrics->keep_free), | |
670b110c | 170 | format_bytes(fb4, sizeof(fb4), ss_avail), |
8580d1f7 LP |
171 | format_bytes(fb5, sizeof(fb5), s->cached_space_limit), |
172 | format_bytes(fb6, sizeof(fb6), s->cached_space_available)); | |
173 | } | |
174 | ||
175 | if (available) | |
176 | *available = s->cached_space_available; | |
177 | if (limit) | |
178 | *limit = s->cached_space_limit; | |
179 | ||
180 | return 1; | |
181 | } | |
182 | ||
183 | static int determine_space(Server *s, bool verbose, bool patch_min_use, uint64_t *available, uint64_t *limit) { | |
184 | JournalMetrics *metrics; | |
185 | const char *path, *name; | |
186 | ||
187 | assert(s); | |
188 | ||
189 | if (s->system_journal) { | |
190 | path = "/var/log/journal/"; | |
191 | metrics = &s->system_metrics; | |
192 | name = "System journal"; | |
193 | } else { | |
194 | path = "/run/log/journal/"; | |
195 | metrics = &s->runtime_metrics; | |
196 | name = "Runtime journal"; | |
670b110c ZJS |
197 | } |
198 | ||
8580d1f7 | 199 | return determine_space_for(s, metrics, path, name, verbose, patch_min_use, available, limit); |
d025f1e4 ZJS |
200 | } |
201 | ||
d025f1e4 ZJS |
202 | void server_fix_perms(Server *s, JournalFile *f, uid_t uid) { |
203 | int r; | |
204 | #ifdef HAVE_ACL | |
0fb39831 | 205 | _cleanup_(acl_freep) acl_t acl = NULL; |
d025f1e4 ZJS |
206 | acl_entry_t entry; |
207 | acl_permset_t permset; | |
208 | #endif | |
209 | ||
210 | assert(f); | |
211 | ||
4608af43 | 212 | r = fchmod(f->fd, 0640); |
d025f1e4 | 213 | if (r < 0) |
65089b82 | 214 | log_warning_errno(errno, "Failed to fix access mode on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
215 | |
216 | #ifdef HAVE_ACL | |
34c10968 | 217 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
218 | return; |
219 | ||
220 | acl = acl_get_fd(f->fd); | |
221 | if (!acl) { | |
56f64d95 | 222 | log_warning_errno(errno, "Failed to read ACL on %s, ignoring: %m", f->path); |
d025f1e4 ZJS |
223 | return; |
224 | } | |
225 | ||
226 | r = acl_find_uid(acl, uid, &entry); | |
227 | if (r <= 0) { | |
228 | ||
229 | if (acl_create_entry(&acl, &entry) < 0 || | |
230 | acl_set_tag_type(entry, ACL_USER) < 0 || | |
231 | acl_set_qualifier(entry, &uid) < 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 | ||
23ad4dd8 JAS |
237 | /* We do not recalculate the mask unconditionally here, |
238 | * so that the fchmod() mask above stays intact. */ | |
d025f1e4 | 239 | if (acl_get_permset(entry, &permset) < 0 || |
23ad4dd8 JAS |
240 | acl_add_perm(permset, ACL_READ) < 0 || |
241 | calc_acl_mask_if_needed(&acl) < 0) { | |
56f64d95 | 242 | log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path); |
0fb39831 | 243 | return; |
d025f1e4 ZJS |
244 | } |
245 | ||
246 | if (acl_set_fd(f->fd, acl) < 0) | |
56f64d95 | 247 | log_warning_errno(errno, "Failed to set ACL on %s, ignoring: %m", f->path); |
d025f1e4 | 248 | |
d025f1e4 ZJS |
249 | #endif |
250 | } | |
251 | ||
252 | static JournalFile* find_journal(Server *s, uid_t uid) { | |
ed375beb | 253 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
254 | int r; |
255 | JournalFile *f; | |
256 | sd_id128_t machine; | |
257 | ||
258 | assert(s); | |
259 | ||
260 | /* We split up user logs only on /var, not on /run. If the | |
261 | * runtime file is open, we write to it exclusively, in order | |
262 | * to guarantee proper order as soon as we flush /run to | |
263 | * /var and close the runtime file. */ | |
264 | ||
265 | if (s->runtime_journal) | |
266 | return s->runtime_journal; | |
267 | ||
f7dc3ab9 | 268 | if (uid <= SYSTEM_UID_MAX) |
d025f1e4 ZJS |
269 | return s->system_journal; |
270 | ||
271 | r = sd_id128_get_machine(&machine); | |
272 | if (r < 0) | |
273 | return s->system_journal; | |
274 | ||
43cf8388 | 275 | f = ordered_hashmap_get(s->user_journals, UINT32_TO_PTR(uid)); |
d025f1e4 ZJS |
276 | if (f) |
277 | return f; | |
278 | ||
de0671ee ZJS |
279 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
280 | SD_ID128_FORMAT_VAL(machine), uid) < 0) | |
d025f1e4 ZJS |
281 | return s->system_journal; |
282 | ||
43cf8388 | 283 | while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { |
d025f1e4 | 284 | /* Too many open? Then let's close one */ |
43cf8388 | 285 | f = ordered_hashmap_steal_first(s->user_journals); |
d025f1e4 ZJS |
286 | assert(f); |
287 | journal_file_close(f); | |
288 | } | |
289 | ||
cbd67177 | 290 | r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f); |
d025f1e4 ZJS |
291 | if (r < 0) |
292 | return s->system_journal; | |
293 | ||
294 | server_fix_perms(s, f, uid); | |
295 | ||
43cf8388 | 296 | r = ordered_hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f); |
d025f1e4 ZJS |
297 | if (r < 0) { |
298 | journal_file_close(f); | |
299 | return s->system_journal; | |
300 | } | |
301 | ||
302 | return f; | |
303 | } | |
304 | ||
ea69bd41 LP |
305 | static int do_rotate( |
306 | Server *s, | |
307 | JournalFile **f, | |
308 | const char* name, | |
309 | bool seal, | |
310 | uint32_t uid) { | |
311 | ||
fc55baee ZJS |
312 | int r; |
313 | assert(s); | |
314 | ||
315 | if (!*f) | |
316 | return -EINVAL; | |
317 | ||
318 | r = journal_file_rotate(f, s->compress, seal); | |
319 | if (r < 0) | |
320 | if (*f) | |
ea69bd41 | 321 | log_error_errno(r, "Failed to rotate %s: %m", (*f)->path); |
fc55baee | 322 | else |
ea69bd41 | 323 | log_error_errno(r, "Failed to create new %s journal: %m", name); |
fc55baee ZJS |
324 | else |
325 | server_fix_perms(s, *f, uid); | |
2678031a | 326 | |
fc55baee ZJS |
327 | return r; |
328 | } | |
329 | ||
d025f1e4 ZJS |
330 | void server_rotate(Server *s) { |
331 | JournalFile *f; | |
332 | void *k; | |
333 | Iterator i; | |
334 | int r; | |
335 | ||
336 | log_debug("Rotating..."); | |
337 | ||
8580d1f7 LP |
338 | (void) do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
339 | (void) do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 | 340 | |
43cf8388 | 341 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
fc55baee ZJS |
342 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k)); |
343 | if (r >= 0) | |
43cf8388 | 344 | ordered_hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
345 | else if (!f) |
346 | /* Old file has been closed and deallocated */ | |
43cf8388 | 347 | ordered_hashmap_remove(s->user_journals, k); |
d025f1e4 ZJS |
348 | } |
349 | } | |
350 | ||
26687bf8 OS |
351 | void server_sync(Server *s) { |
352 | JournalFile *f; | |
353 | void *k; | |
354 | Iterator i; | |
355 | int r; | |
356 | ||
26687bf8 OS |
357 | if (s->system_journal) { |
358 | r = journal_file_set_offline(s->system_journal); | |
359 | if (r < 0) | |
65089b82 | 360 | log_warning_errno(r, "Failed to sync system journal, ignoring: %m"); |
26687bf8 OS |
361 | } |
362 | ||
43cf8388 | 363 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
26687bf8 OS |
364 | r = journal_file_set_offline(f); |
365 | if (r < 0) | |
65089b82 | 366 | log_warning_errno(r, "Failed to sync user journal, ignoring: %m"); |
26687bf8 OS |
367 | } |
368 | ||
f9a810be LP |
369 | if (s->sync_event_source) { |
370 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
371 | if (r < 0) | |
da927ba9 | 372 | log_error_errno(r, "Failed to disable sync timer source: %m"); |
f9a810be | 373 | } |
26687bf8 OS |
374 | |
375 | s->sync_scheduled = false; | |
376 | } | |
377 | ||
ea69bd41 LP |
378 | static void do_vacuum( |
379 | Server *s, | |
ea69bd41 | 380 | JournalFile *f, |
8580d1f7 LP |
381 | JournalMetrics *metrics, |
382 | const char *path, | |
383 | const char *name, | |
384 | bool verbose, | |
385 | bool patch_min_use) { | |
ea69bd41 LP |
386 | |
387 | const char *p; | |
8580d1f7 | 388 | uint64_t limit; |
63c8666b ZJS |
389 | int r; |
390 | ||
8580d1f7 LP |
391 | assert(s); |
392 | assert(metrics); | |
393 | assert(path); | |
394 | assert(name); | |
395 | ||
63c8666b ZJS |
396 | if (!f) |
397 | return; | |
398 | ||
8580d1f7 LP |
399 | p = strjoina(path, SERVER_MACHINE_ID(s)); |
400 | ||
401 | limit = metrics->max_use; | |
402 | (void) determine_space_for(s, metrics, path, name, verbose, patch_min_use, NULL, &limit); | |
403 | ||
404 | r = journal_directory_vacuum(p, limit, metrics->n_max_files, s->max_retention_usec, &s->oldest_file_usec, verbose); | |
63c8666b | 405 | if (r < 0 && r != -ENOENT) |
8580d1f7 | 406 | log_warning_errno(r, "Failed to vacuum %s, ignoring: %m", p); |
63c8666b ZJS |
407 | } |
408 | ||
8580d1f7 LP |
409 | int server_vacuum(Server *s, bool verbose, bool patch_min_use) { |
410 | assert(s); | |
d025f1e4 ZJS |
411 | |
412 | log_debug("Vacuuming..."); | |
413 | ||
414 | s->oldest_file_usec = 0; | |
415 | ||
8580d1f7 LP |
416 | do_vacuum(s, s->system_journal, &s->system_metrics, "/var/log/journal/", "System journal", verbose, patch_min_use); |
417 | do_vacuum(s, s->runtime_journal, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", verbose, patch_min_use); | |
d025f1e4 | 418 | |
8580d1f7 LP |
419 | s->cached_space_limit = 0; |
420 | s->cached_space_available = 0; | |
421 | s->cached_space_timestamp = 0; | |
d025f1e4 | 422 | |
8580d1f7 | 423 | return 0; |
d025f1e4 ZJS |
424 | } |
425 | ||
0c24bb23 LP |
426 | static void server_cache_machine_id(Server *s) { |
427 | sd_id128_t id; | |
428 | int r; | |
429 | ||
430 | assert(s); | |
431 | ||
432 | r = sd_id128_get_machine(&id); | |
433 | if (r < 0) | |
434 | return; | |
435 | ||
436 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
437 | } | |
438 | ||
439 | static void server_cache_boot_id(Server *s) { | |
440 | sd_id128_t id; | |
441 | int r; | |
442 | ||
443 | assert(s); | |
444 | ||
445 | r = sd_id128_get_boot(&id); | |
446 | if (r < 0) | |
447 | return; | |
448 | ||
449 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
450 | } | |
451 | ||
452 | static void server_cache_hostname(Server *s) { | |
453 | _cleanup_free_ char *t = NULL; | |
454 | char *x; | |
455 | ||
456 | assert(s); | |
457 | ||
458 | t = gethostname_malloc(); | |
459 | if (!t) | |
460 | return; | |
461 | ||
462 | x = strappend("_HOSTNAME=", t); | |
463 | if (!x) | |
464 | return; | |
465 | ||
466 | free(s->hostname_field); | |
467 | s->hostname_field = x; | |
468 | } | |
469 | ||
8531ae70 | 470 | static bool shall_try_append_again(JournalFile *f, int r) { |
d025f1e4 ZJS |
471 | |
472 | /* -E2BIG Hit configured limit | |
473 | -EFBIG Hit fs limit | |
474 | -EDQUOT Quota limit hit | |
475 | -ENOSPC Disk full | |
fa6ac760 | 476 | -EIO I/O error of some kind (mmap) |
d025f1e4 ZJS |
477 | -EHOSTDOWN Other machine |
478 | -EBUSY Unclean shutdown | |
479 | -EPROTONOSUPPORT Unsupported feature | |
480 | -EBADMSG Corrupted | |
481 | -ENODATA Truncated | |
2678031a LP |
482 | -ESHUTDOWN Already archived |
483 | -EIDRM Journal file has been deleted */ | |
d025f1e4 ZJS |
484 | |
485 | if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC) | |
486 | log_debug("%s: Allocation limit reached, rotating.", f->path); | |
487 | else if (r == -EHOSTDOWN) | |
488 | log_info("%s: Journal file from other machine, rotating.", f->path); | |
489 | else if (r == -EBUSY) | |
490 | log_info("%s: Unclean shutdown, rotating.", f->path); | |
491 | else if (r == -EPROTONOSUPPORT) | |
492 | log_info("%s: Unsupported feature, rotating.", f->path); | |
493 | else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN) | |
494 | log_warning("%s: Journal file corrupted, rotating.", f->path); | |
fa6ac760 LP |
495 | else if (r == -EIO) |
496 | log_warning("%s: IO error, rotating.", f->path); | |
2678031a LP |
497 | else if (r == -EIDRM) |
498 | log_warning("%s: Journal file has been deleted, rotating.", f->path); | |
d025f1e4 ZJS |
499 | else |
500 | return false; | |
501 | ||
502 | return true; | |
503 | } | |
504 | ||
d07f7b9e | 505 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) { |
d025f1e4 ZJS |
506 | JournalFile *f; |
507 | bool vacuumed = false; | |
508 | int r; | |
509 | ||
510 | assert(s); | |
511 | assert(iovec); | |
512 | assert(n > 0); | |
513 | ||
514 | f = find_journal(s, uid); | |
515 | if (!f) | |
516 | return; | |
517 | ||
518 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
519 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
520 | server_rotate(s); | |
8580d1f7 | 521 | server_vacuum(s, false, false); |
d025f1e4 ZJS |
522 | vacuumed = true; |
523 | ||
524 | f = find_journal(s, uid); | |
525 | if (!f) | |
526 | return; | |
527 | } | |
528 | ||
529 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
26687bf8 | 530 | if (r >= 0) { |
d07f7b9e | 531 | server_schedule_sync(s, priority); |
d025f1e4 | 532 | return; |
26687bf8 | 533 | } |
d025f1e4 ZJS |
534 | |
535 | if (vacuumed || !shall_try_append_again(f, r)) { | |
8266e1c0 | 536 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); |
d025f1e4 ZJS |
537 | return; |
538 | } | |
539 | ||
540 | server_rotate(s); | |
8580d1f7 | 541 | server_vacuum(s, false, false); |
d025f1e4 ZJS |
542 | |
543 | f = find_journal(s, uid); | |
544 | if (!f) | |
545 | return; | |
546 | ||
547 | log_debug("Retrying write."); | |
548 | r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL); | |
8266e1c0 LP |
549 | if (r < 0) |
550 | log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); | |
551 | else | |
d07f7b9e | 552 | server_schedule_sync(s, priority); |
d025f1e4 ZJS |
553 | } |
554 | ||
555 | static void dispatch_message_real( | |
556 | Server *s, | |
557 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
558 | const struct ucred *ucred, |
559 | const struct timeval *tv, | |
d025f1e4 | 560 | const char *label, size_t label_len, |
968f3196 | 561 | const char *unit_id, |
d07f7b9e | 562 | int priority, |
968f3196 | 563 | pid_t object_pid) { |
d025f1e4 | 564 | |
968f3196 | 565 | char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)], |
ae018d9b LP |
566 | uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)], |
567 | gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)], | |
568 | owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)], | |
d3789917 | 569 | source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)], |
968f3196 ZJS |
570 | o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)], |
571 | o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)], | |
572 | o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)]; | |
573 | uid_t object_uid; | |
574 | gid_t object_gid; | |
968f3196 | 575 | char *x; |
d025f1e4 | 576 | int r; |
ae018d9b | 577 | char *t, *c; |
82499507 LP |
578 | uid_t realuid = 0, owner = 0, journal_uid; |
579 | bool owner_valid = false; | |
ae018d9b | 580 | #ifdef HAVE_AUDIT |
968f3196 ZJS |
581 | char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], |
582 | audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)], | |
583 | o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)], | |
584 | o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)]; | |
ae018d9b LP |
585 | |
586 | uint32_t audit; | |
587 | uid_t loginuid; | |
588 | #endif | |
d025f1e4 ZJS |
589 | |
590 | assert(s); | |
591 | assert(iovec); | |
592 | assert(n > 0); | |
968f3196 | 593 | assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m); |
d025f1e4 ZJS |
594 | |
595 | if (ucred) { | |
d025f1e4 ZJS |
596 | realuid = ucred->uid; |
597 | ||
de0671ee | 598 | sprintf(pid, "_PID="PID_FMT, ucred->pid); |
c2457105 | 599 | IOVEC_SET_STRING(iovec[n++], pid); |
d025f1e4 | 600 | |
de0671ee | 601 | sprintf(uid, "_UID="UID_FMT, ucred->uid); |
c2457105 | 602 | IOVEC_SET_STRING(iovec[n++], uid); |
d025f1e4 | 603 | |
de0671ee | 604 | sprintf(gid, "_GID="GID_FMT, ucred->gid); |
c2457105 | 605 | IOVEC_SET_STRING(iovec[n++], gid); |
d025f1e4 ZJS |
606 | |
607 | r = get_process_comm(ucred->pid, &t); | |
608 | if (r >= 0) { | |
63c372cb | 609 | x = strjoina("_COMM=", t); |
d025f1e4 | 610 | free(t); |
968f3196 | 611 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
612 | } |
613 | ||
614 | r = get_process_exe(ucred->pid, &t); | |
615 | if (r >= 0) { | |
63c372cb | 616 | x = strjoina("_EXE=", t); |
d025f1e4 | 617 | free(t); |
968f3196 | 618 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
619 | } |
620 | ||
9bdbc2e2 | 621 | r = get_process_cmdline(ucred->pid, 0, false, &t); |
d025f1e4 | 622 | if (r >= 0) { |
63c372cb | 623 | x = strjoina("_CMDLINE=", t); |
d025f1e4 | 624 | free(t); |
3a832116 SL |
625 | IOVEC_SET_STRING(iovec[n++], x); |
626 | } | |
627 | ||
628 | r = get_process_capeff(ucred->pid, &t); | |
629 | if (r >= 0) { | |
63c372cb | 630 | x = strjoina("_CAP_EFFECTIVE=", t); |
3a832116 | 631 | free(t); |
968f3196 | 632 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 ZJS |
633 | } |
634 | ||
0a20e3c1 | 635 | #ifdef HAVE_AUDIT |
d025f1e4 | 636 | r = audit_session_from_pid(ucred->pid, &audit); |
ae018d9b | 637 | if (r >= 0) { |
de0671ee | 638 | sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit); |
ae018d9b LP |
639 | IOVEC_SET_STRING(iovec[n++], audit_session); |
640 | } | |
d025f1e4 ZJS |
641 | |
642 | r = audit_loginuid_from_pid(ucred->pid, &loginuid); | |
7027ff61 | 643 | if (r >= 0) { |
de0671ee | 644 | sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid); |
ae018d9b | 645 | IOVEC_SET_STRING(iovec[n++], audit_loginuid); |
d025f1e4 | 646 | } |
ae018d9b | 647 | #endif |
d025f1e4 | 648 | |
e9174f29 | 649 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c); |
7027ff61 | 650 | if (r >= 0) { |
968f3196 ZJS |
651 | char *session = NULL; |
652 | ||
63c372cb | 653 | x = strjoina("_SYSTEMD_CGROUP=", c); |
968f3196 | 654 | IOVEC_SET_STRING(iovec[n++], x); |
d025f1e4 | 655 | |
ae018d9b LP |
656 | r = cg_path_get_session(c, &t); |
657 | if (r >= 0) { | |
63c372cb | 658 | session = strjoina("_SYSTEMD_SESSION=", t); |
ae018d9b | 659 | free(t); |
d025f1e4 | 660 | IOVEC_SET_STRING(iovec[n++], session); |
ae018d9b LP |
661 | } |
662 | ||
663 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
664 | owner_valid = true; | |
d025f1e4 | 665 | |
de0671ee | 666 | sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner); |
d025f1e4 | 667 | IOVEC_SET_STRING(iovec[n++], owner_uid); |
ae018d9b | 668 | } |
d025f1e4 | 669 | |
ae018d9b | 670 | if (cg_path_get_unit(c, &t) >= 0) { |
63c372cb | 671 | x = strjoina("_SYSTEMD_UNIT=", t); |
ae018d9b | 672 | free(t); |
19cace37 LP |
673 | IOVEC_SET_STRING(iovec[n++], x); |
674 | } else if (unit_id && !session) { | |
63c372cb | 675 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
19cace37 LP |
676 | IOVEC_SET_STRING(iovec[n++], x); |
677 | } | |
678 | ||
679 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 680 | x = strjoina("_SYSTEMD_USER_UNIT=", t); |
ae018d9b | 681 | free(t); |
968f3196 | 682 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 683 | } else if (unit_id && session) { |
63c372cb | 684 | x = strjoina("_SYSTEMD_USER_UNIT=", unit_id); |
19cace37 LP |
685 | IOVEC_SET_STRING(iovec[n++], x); |
686 | } | |
ae018d9b | 687 | |
0a244b8e | 688 | if (cg_path_get_slice(c, &t) >= 0) { |
63c372cb | 689 | x = strjoina("_SYSTEMD_SLICE=", t); |
0a244b8e LP |
690 | free(t); |
691 | IOVEC_SET_STRING(iovec[n++], x); | |
692 | } | |
693 | ||
ae018d9b | 694 | free(c); |
2d43b190 | 695 | } else if (unit_id) { |
63c372cb | 696 | x = strjoina("_SYSTEMD_UNIT=", unit_id); |
2d43b190 | 697 | IOVEC_SET_STRING(iovec[n++], x); |
ef1673d1 | 698 | } |
d025f1e4 | 699 | |
d025f1e4 | 700 | #ifdef HAVE_SELINUX |
6baa7db0 | 701 | if (mac_selinux_use()) { |
d682b3a7 | 702 | if (label) { |
f8294e41 | 703 | x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1); |
ae018d9b | 704 | |
d682b3a7 LP |
705 | *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0; |
706 | IOVEC_SET_STRING(iovec[n++], x); | |
707 | } else { | |
708 | security_context_t con; | |
d025f1e4 | 709 | |
d682b3a7 | 710 | if (getpidcon(ucred->pid, &con) >= 0) { |
63c372cb | 711 | x = strjoina("_SELINUX_CONTEXT=", con); |
e7ff4e7f | 712 | |
d682b3a7 LP |
713 | freecon(con); |
714 | IOVEC_SET_STRING(iovec[n++], x); | |
715 | } | |
d025f1e4 ZJS |
716 | } |
717 | } | |
718 | #endif | |
719 | } | |
968f3196 ZJS |
720 | assert(n <= m); |
721 | ||
722 | if (object_pid) { | |
723 | r = get_process_uid(object_pid, &object_uid); | |
724 | if (r >= 0) { | |
de0671ee | 725 | sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid); |
968f3196 ZJS |
726 | IOVEC_SET_STRING(iovec[n++], o_uid); |
727 | } | |
728 | ||
729 | r = get_process_gid(object_pid, &object_gid); | |
730 | if (r >= 0) { | |
de0671ee | 731 | sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid); |
968f3196 ZJS |
732 | IOVEC_SET_STRING(iovec[n++], o_gid); |
733 | } | |
734 | ||
735 | r = get_process_comm(object_pid, &t); | |
736 | if (r >= 0) { | |
63c372cb | 737 | x = strjoina("OBJECT_COMM=", t); |
968f3196 ZJS |
738 | free(t); |
739 | IOVEC_SET_STRING(iovec[n++], x); | |
740 | } | |
741 | ||
742 | r = get_process_exe(object_pid, &t); | |
743 | if (r >= 0) { | |
63c372cb | 744 | x = strjoina("OBJECT_EXE=", t); |
968f3196 ZJS |
745 | free(t); |
746 | IOVEC_SET_STRING(iovec[n++], x); | |
747 | } | |
748 | ||
749 | r = get_process_cmdline(object_pid, 0, false, &t); | |
750 | if (r >= 0) { | |
63c372cb | 751 | x = strjoina("OBJECT_CMDLINE=", t); |
968f3196 ZJS |
752 | free(t); |
753 | IOVEC_SET_STRING(iovec[n++], x); | |
754 | } | |
755 | ||
756 | #ifdef HAVE_AUDIT | |
757 | r = audit_session_from_pid(object_pid, &audit); | |
758 | if (r >= 0) { | |
de0671ee | 759 | sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit); |
968f3196 ZJS |
760 | IOVEC_SET_STRING(iovec[n++], o_audit_session); |
761 | } | |
762 | ||
763 | r = audit_loginuid_from_pid(object_pid, &loginuid); | |
764 | if (r >= 0) { | |
de0671ee | 765 | sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid); |
968f3196 ZJS |
766 | IOVEC_SET_STRING(iovec[n++], o_audit_loginuid); |
767 | } | |
768 | #endif | |
769 | ||
e9174f29 | 770 | r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c); |
968f3196 | 771 | if (r >= 0) { |
63c372cb | 772 | x = strjoina("OBJECT_SYSTEMD_CGROUP=", c); |
968f3196 ZJS |
773 | IOVEC_SET_STRING(iovec[n++], x); |
774 | ||
775 | r = cg_path_get_session(c, &t); | |
776 | if (r >= 0) { | |
63c372cb | 777 | x = strjoina("OBJECT_SYSTEMD_SESSION=", t); |
968f3196 ZJS |
778 | free(t); |
779 | IOVEC_SET_STRING(iovec[n++], x); | |
780 | } | |
781 | ||
782 | if (cg_path_get_owner_uid(c, &owner) >= 0) { | |
de0671ee | 783 | sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner); |
968f3196 ZJS |
784 | IOVEC_SET_STRING(iovec[n++], o_owner_uid); |
785 | } | |
786 | ||
787 | if (cg_path_get_unit(c, &t) >= 0) { | |
63c372cb | 788 | x = strjoina("OBJECT_SYSTEMD_UNIT=", t); |
968f3196 | 789 | free(t); |
19cace37 LP |
790 | IOVEC_SET_STRING(iovec[n++], x); |
791 | } | |
792 | ||
793 | if (cg_path_get_user_unit(c, &t) >= 0) { | |
63c372cb | 794 | x = strjoina("OBJECT_SYSTEMD_USER_UNIT=", t); |
968f3196 | 795 | free(t); |
968f3196 | 796 | IOVEC_SET_STRING(iovec[n++], x); |
19cace37 | 797 | } |
968f3196 ZJS |
798 | |
799 | free(c); | |
800 | } | |
801 | } | |
802 | assert(n <= m); | |
d025f1e4 ZJS |
803 | |
804 | if (tv) { | |
ae018d9b | 805 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv)); |
a5693989 | 806 | IOVEC_SET_STRING(iovec[n++], source_time); |
d025f1e4 ZJS |
807 | } |
808 | ||
809 | /* Note that strictly speaking storing the boot id here is | |
810 | * redundant since the entry includes this in-line | |
811 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 LP |
812 | if (!isempty(s->boot_id_field)) |
813 | IOVEC_SET_STRING(iovec[n++], s->boot_id_field); | |
d025f1e4 | 814 | |
0c24bb23 LP |
815 | if (!isempty(s->machine_id_field)) |
816 | IOVEC_SET_STRING(iovec[n++], s->machine_id_field); | |
d025f1e4 | 817 | |
0c24bb23 LP |
818 | if (!isempty(s->hostname_field)) |
819 | IOVEC_SET_STRING(iovec[n++], s->hostname_field); | |
d025f1e4 ZJS |
820 | |
821 | assert(n <= m); | |
822 | ||
da499392 | 823 | if (s->split_mode == SPLIT_UID && realuid > 0) |
40adcda8 | 824 | /* Split up strictly by any UID */ |
759c945a | 825 | journal_uid = realuid; |
82499507 | 826 | else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0) |
edc3797f LP |
827 | /* Split up by login UIDs. We do this only if the |
828 | * realuid is not root, in order not to accidentally | |
829 | * leak privileged information to the user that is | |
830 | * logged by a privileged process that is part of an | |
7517e174 | 831 | * unprivileged session. */ |
8a0889df | 832 | journal_uid = owner; |
da499392 KS |
833 | else |
834 | journal_uid = 0; | |
759c945a | 835 | |
d07f7b9e | 836 | write_to_journal(s, journal_uid, iovec, n, priority); |
d025f1e4 ZJS |
837 | } |
838 | ||
839 | void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) { | |
840 | char mid[11 + 32 + 1]; | |
841 | char buffer[16 + LINE_MAX + 1]; | |
b6fa2555 | 842 | struct iovec iovec[N_IOVEC_META_FIELDS + 6]; |
d025f1e4 ZJS |
843 | int n = 0; |
844 | va_list ap; | |
b92bea5d | 845 | struct ucred ucred = {}; |
d025f1e4 ZJS |
846 | |
847 | assert(s); | |
848 | assert(format); | |
849 | ||
b6fa2555 EV |
850 | IOVEC_SET_STRING(iovec[n++], "SYSLOG_FACILITY=3"); |
851 | IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=systemd-journald"); | |
852 | ||
d025f1e4 ZJS |
853 | IOVEC_SET_STRING(iovec[n++], "PRIORITY=6"); |
854 | IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver"); | |
855 | ||
856 | memcpy(buffer, "MESSAGE=", 8); | |
857 | va_start(ap, format); | |
858 | vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap); | |
859 | va_end(ap); | |
d025f1e4 ZJS |
860 | IOVEC_SET_STRING(iovec[n++], buffer); |
861 | ||
862 | if (!sd_id128_equal(message_id, SD_ID128_NULL)) { | |
e2cc6eca | 863 | snprintf(mid, sizeof(mid), LOG_MESSAGE_ID(message_id)); |
d025f1e4 ZJS |
864 | IOVEC_SET_STRING(iovec[n++], mid); |
865 | } | |
866 | ||
d025f1e4 ZJS |
867 | ucred.pid = getpid(); |
868 | ucred.uid = getuid(); | |
869 | ucred.gid = getgid(); | |
870 | ||
d07f7b9e | 871 | dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL, LOG_INFO, 0); |
d025f1e4 ZJS |
872 | } |
873 | ||
874 | void server_dispatch_message( | |
875 | Server *s, | |
876 | struct iovec *iovec, unsigned n, unsigned m, | |
3b3154df LP |
877 | const struct ucred *ucred, |
878 | const struct timeval *tv, | |
d025f1e4 ZJS |
879 | const char *label, size_t label_len, |
880 | const char *unit_id, | |
968f3196 ZJS |
881 | int priority, |
882 | pid_t object_pid) { | |
d025f1e4 | 883 | |
7027ff61 | 884 | int rl, r; |
7fd1b19b | 885 | _cleanup_free_ char *path = NULL; |
8580d1f7 | 886 | uint64_t available = 0; |
db91ea32 | 887 | char *c; |
d025f1e4 ZJS |
888 | |
889 | assert(s); | |
890 | assert(iovec || n == 0); | |
891 | ||
892 | if (n == 0) | |
893 | return; | |
894 | ||
895 | if (LOG_PRI(priority) > s->max_level_store) | |
896 | return; | |
897 | ||
2f5df74a HHPF |
898 | /* Stop early in case the information will not be stored |
899 | * in a journal. */ | |
900 | if (s->storage == STORAGE_NONE) | |
901 | return; | |
902 | ||
d025f1e4 ZJS |
903 | if (!ucred) |
904 | goto finish; | |
905 | ||
e9174f29 | 906 | r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path); |
7027ff61 | 907 | if (r < 0) |
d025f1e4 ZJS |
908 | goto finish; |
909 | ||
910 | /* example: /user/lennart/3/foobar | |
911 | * /system/dbus.service/foobar | |
912 | * | |
913 | * So let's cut of everything past the third /, since that is | |
914 | * where user directories start */ | |
915 | ||
916 | c = strchr(path, '/'); | |
917 | if (c) { | |
918 | c = strchr(c+1, '/'); | |
919 | if (c) { | |
920 | c = strchr(c+1, '/'); | |
921 | if (c) | |
922 | *c = 0; | |
923 | } | |
924 | } | |
925 | ||
8580d1f7 LP |
926 | (void) determine_space(s, false, false, &available, NULL); |
927 | rl = journal_rate_limit_test(s->rate_limit, path, priority & LOG_PRIMASK, available); | |
db91ea32 | 928 | if (rl == 0) |
d025f1e4 | 929 | return; |
d025f1e4 ZJS |
930 | |
931 | /* Write a suppression message if we suppressed something */ | |
932 | if (rl > 1) | |
db91ea32 ZJS |
933 | server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, |
934 | "Suppressed %u messages from %s", rl - 1, path); | |
d025f1e4 ZJS |
935 | |
936 | finish: | |
d07f7b9e | 937 | dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id, priority, object_pid); |
d025f1e4 ZJS |
938 | } |
939 | ||
940 | ||
caa2f4c0 | 941 | static int system_journal_open(Server *s, bool flush_requested) { |
84267e40 | 942 | const char *fn; |
09eba4d4 | 943 | int r = 0; |
d025f1e4 ZJS |
944 | |
945 | if (!s->system_journal && | |
946 | (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) && | |
caa2f4c0 ZJS |
947 | (flush_requested |
948 | || access("/run/systemd/journal/flushed", F_OK) >= 0)) { | |
d025f1e4 ZJS |
949 | |
950 | /* If in auto mode: first try to create the machine | |
951 | * path, but not the prefix. | |
952 | * | |
953 | * If in persistent mode: create /var/log/journal and | |
954 | * the machine path */ | |
955 | ||
956 | if (s->storage == STORAGE_PERSISTENT) | |
ac892057 | 957 | (void) mkdir_p("/var/log/journal/", 0755); |
d025f1e4 | 958 | |
8580d1f7 | 959 | fn = strjoina("/var/log/journal/", SERVER_MACHINE_ID(s)); |
d025f1e4 | 960 | (void) mkdir(fn, 0755); |
d025f1e4 | 961 | |
63c372cb | 962 | fn = strjoina(fn, "/system.journal"); |
d025f1e4 | 963 | 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 | 964 | if (r >= 0) { |
d025f1e4 | 965 | server_fix_perms(s, s->system_journal, 0); |
8580d1f7 LP |
966 | (void) determine_space_for(s, &s->system_metrics, "/var/log/journal/", "System journal", true, true, NULL, NULL); |
967 | } else if (r < 0) { | |
433dd100 | 968 | if (r != -ENOENT && r != -EROFS) |
da927ba9 | 969 | log_warning_errno(r, "Failed to open system journal: %m"); |
e40ec7ae | 970 | |
433dd100 LN |
971 | r = 0; |
972 | } | |
d025f1e4 ZJS |
973 | } |
974 | ||
975 | if (!s->runtime_journal && | |
976 | (s->storage != STORAGE_NONE)) { | |
977 | ||
8580d1f7 | 978 | fn = strjoina("/run/log/journal/", SERVER_MACHINE_ID(s), "/system.journal"); |
d025f1e4 ZJS |
979 | |
980 | if (s->system_journal) { | |
981 | ||
982 | /* Try to open the runtime journal, but only | |
983 | * if it already exists, so that we can flush | |
984 | * it into the system journal */ | |
985 | ||
986 | r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal); | |
d025f1e4 ZJS |
987 | if (r < 0) { |
988 | if (r != -ENOENT) | |
da927ba9 | 989 | log_warning_errno(r, "Failed to open runtime journal: %m"); |
d025f1e4 ZJS |
990 | |
991 | r = 0; | |
992 | } | |
993 | ||
994 | } else { | |
995 | ||
996 | /* OK, we really need the runtime journal, so create | |
997 | * it if necessary. */ | |
998 | ||
fc1d70af LP |
999 | (void) mkdir("/run/log", 0755); |
1000 | (void) mkdir("/run/log/journal", 0755); | |
1001 | (void) mkdir_parents(fn, 0750); | |
1002 | ||
d025f1e4 | 1003 | 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 |
1004 | if (r < 0) |
1005 | return log_error_errno(r, "Failed to open runtime journal: %m"); | |
d025f1e4 ZJS |
1006 | } |
1007 | ||
8580d1f7 | 1008 | if (s->runtime_journal) { |
d025f1e4 | 1009 | server_fix_perms(s, s->runtime_journal, 0); |
8580d1f7 LP |
1010 | (void) determine_space_for(s, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", true, true, NULL, NULL); |
1011 | } | |
d025f1e4 ZJS |
1012 | } |
1013 | ||
1014 | return r; | |
1015 | } | |
1016 | ||
1017 | int server_flush_to_var(Server *s) { | |
d025f1e4 ZJS |
1018 | sd_id128_t machine; |
1019 | sd_journal *j = NULL; | |
fbb63411 LP |
1020 | char ts[FORMAT_TIMESPAN_MAX]; |
1021 | usec_t start; | |
1022 | unsigned n = 0; | |
1023 | int r; | |
d025f1e4 ZJS |
1024 | |
1025 | assert(s); | |
1026 | ||
1027 | if (s->storage != STORAGE_AUTO && | |
1028 | s->storage != STORAGE_PERSISTENT) | |
1029 | return 0; | |
1030 | ||
1031 | if (!s->runtime_journal) | |
1032 | return 0; | |
1033 | ||
8580d1f7 | 1034 | (void) system_journal_open(s, true); |
d025f1e4 ZJS |
1035 | |
1036 | if (!s->system_journal) | |
1037 | return 0; | |
1038 | ||
1039 | log_debug("Flushing to /var..."); | |
1040 | ||
fbb63411 LP |
1041 | start = now(CLOCK_MONOTONIC); |
1042 | ||
d025f1e4 | 1043 | r = sd_id128_get_machine(&machine); |
00a16861 | 1044 | if (r < 0) |
d025f1e4 | 1045 | return r; |
d025f1e4 ZJS |
1046 | |
1047 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
23bbb0de MS |
1048 | if (r < 0) |
1049 | return log_error_errno(r, "Failed to read runtime journal: %m"); | |
d025f1e4 | 1050 | |
93b73b06 LP |
1051 | sd_journal_set_data_threshold(j, 0); |
1052 | ||
d025f1e4 ZJS |
1053 | SD_JOURNAL_FOREACH(j) { |
1054 | Object *o = NULL; | |
1055 | JournalFile *f; | |
1056 | ||
1057 | f = j->current_file; | |
1058 | assert(f && f->current_offset > 0); | |
1059 | ||
fbb63411 LP |
1060 | n++; |
1061 | ||
d025f1e4 ZJS |
1062 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1063 | if (r < 0) { | |
da927ba9 | 1064 | log_error_errno(r, "Can't read entry: %m"); |
d025f1e4 ZJS |
1065 | goto finish; |
1066 | } | |
1067 | ||
1068 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1069 | if (r >= 0) | |
1070 | continue; | |
1071 | ||
1072 | if (!shall_try_append_again(s->system_journal, r)) { | |
da927ba9 | 1073 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1074 | goto finish; |
1075 | } | |
1076 | ||
1077 | server_rotate(s); | |
8580d1f7 | 1078 | server_vacuum(s, false, false); |
d025f1e4 | 1079 | |
253f59df LP |
1080 | if (!s->system_journal) { |
1081 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1082 | r = -EIO; | |
1083 | goto finish; | |
1084 | } | |
1085 | ||
d025f1e4 ZJS |
1086 | log_debug("Retrying write."); |
1087 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL); | |
1088 | if (r < 0) { | |
da927ba9 | 1089 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1090 | goto finish; |
1091 | } | |
1092 | } | |
1093 | ||
804ae586 LP |
1094 | r = 0; |
1095 | ||
d025f1e4 ZJS |
1096 | finish: |
1097 | journal_file_post_change(s->system_journal); | |
1098 | ||
804ae586 | 1099 | s->runtime_journal = journal_file_close(s->runtime_journal); |
d025f1e4 ZJS |
1100 | |
1101 | if (r >= 0) | |
c6878637 | 1102 | (void) rm_rf("/run/log/journal", REMOVE_ROOT); |
d025f1e4 | 1103 | |
763c7aa2 | 1104 | sd_journal_close(j); |
d025f1e4 | 1105 | |
fbb63411 LP |
1106 | 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); |
1107 | ||
d025f1e4 ZJS |
1108 | return r; |
1109 | } | |
1110 | ||
8531ae70 | 1111 | int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
f9a810be | 1112 | Server *s = userdata; |
a315ac4e LP |
1113 | struct ucred *ucred = NULL; |
1114 | struct timeval *tv = NULL; | |
1115 | struct cmsghdr *cmsg; | |
1116 | char *label = NULL; | |
1117 | size_t label_len = 0, m; | |
1118 | struct iovec iovec; | |
1119 | ssize_t n; | |
1120 | int *fds = NULL, v = 0; | |
1121 | unsigned n_fds = 0; | |
1122 | ||
1123 | union { | |
1124 | struct cmsghdr cmsghdr; | |
1125 | ||
1126 | /* We use NAME_MAX space for the SELinux label | |
1127 | * here. The kernel currently enforces no | |
1128 | * limit, but according to suggestions from | |
1129 | * the SELinux people this will change and it | |
1130 | * will probably be identical to NAME_MAX. For | |
1131 | * now we use that, but this should be updated | |
1132 | * one day when the final limit is known. */ | |
1133 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1134 | CMSG_SPACE(sizeof(struct timeval)) + | |
1135 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1136 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1137 | } control = {}; | |
1138 | ||
1139 | union sockaddr_union sa = {}; | |
1140 | ||
1141 | struct msghdr msghdr = { | |
1142 | .msg_iov = &iovec, | |
1143 | .msg_iovlen = 1, | |
1144 | .msg_control = &control, | |
1145 | .msg_controllen = sizeof(control), | |
1146 | .msg_name = &sa, | |
1147 | .msg_namelen = sizeof(sa), | |
1148 | }; | |
f9a810be | 1149 | |
d025f1e4 | 1150 | assert(s); |
875c2e22 | 1151 | assert(fd == s->native_fd || fd == s->syslog_fd || fd == s->audit_fd); |
f9a810be LP |
1152 | |
1153 | if (revents != EPOLLIN) { | |
1154 | log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents); | |
1155 | return -EIO; | |
1156 | } | |
1157 | ||
a315ac4e LP |
1158 | /* Try to get the right size, if we can. (Not all |
1159 | * sockets support SIOCINQ, hence we just try, but | |
1160 | * don't rely on it. */ | |
1161 | (void) ioctl(fd, SIOCINQ, &v); | |
d025f1e4 | 1162 | |
a315ac4e LP |
1163 | /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */ |
1164 | m = PAGE_ALIGN(MAX3((size_t) v + 1, | |
1165 | (size_t) LINE_MAX, | |
1166 | ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1); | |
d025f1e4 | 1167 | |
a315ac4e LP |
1168 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m)) |
1169 | return log_oom(); | |
875c2e22 | 1170 | |
a315ac4e LP |
1171 | iovec.iov_base = s->buffer; |
1172 | iovec.iov_len = s->buffer_size - 1; /* Leave room for trailing NUL we add later */ | |
d025f1e4 | 1173 | |
a315ac4e LP |
1174 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1175 | if (n < 0) { | |
1176 | if (errno == EINTR || errno == EAGAIN) | |
1177 | return 0; | |
875c2e22 | 1178 | |
a315ac4e LP |
1179 | return log_error_errno(errno, "recvmsg() failed: %m"); |
1180 | } | |
875c2e22 | 1181 | |
a315ac4e LP |
1182 | CMSG_FOREACH(cmsg, &msghdr) { |
1183 | ||
1184 | if (cmsg->cmsg_level == SOL_SOCKET && | |
1185 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1186 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) | |
1187 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1188 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1189 | cmsg->cmsg_type == SCM_SECURITY) { | |
1190 | label = (char*) CMSG_DATA(cmsg); | |
1191 | label_len = cmsg->cmsg_len - CMSG_LEN(0); | |
1192 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1193 | cmsg->cmsg_type == SO_TIMESTAMP && | |
1194 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval))) | |
1195 | tv = (struct timeval*) CMSG_DATA(cmsg); | |
1196 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1197 | cmsg->cmsg_type == SCM_RIGHTS) { | |
1198 | fds = (int*) CMSG_DATA(cmsg); | |
1199 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
d025f1e4 | 1200 | } |
a315ac4e | 1201 | } |
d025f1e4 | 1202 | |
a315ac4e LP |
1203 | /* And a trailing NUL, just in case */ |
1204 | s->buffer[n] = 0; | |
1205 | ||
1206 | if (fd == s->syslog_fd) { | |
1207 | if (n > 0 && n_fds == 0) | |
1208 | server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len); | |
1209 | else if (n_fds > 0) | |
1210 | log_warning("Got file descriptors via syslog socket. Ignoring."); | |
1211 | ||
1212 | } else if (fd == s->native_fd) { | |
1213 | if (n > 0 && n_fds == 0) | |
1214 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1215 | else if (n == 0 && n_fds == 1) | |
1216 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1217 | else if (n_fds > 0) | |
1218 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
1219 | ||
1220 | } else { | |
1221 | assert(fd == s->audit_fd); | |
1222 | ||
1223 | if (n > 0 && n_fds == 0) | |
1224 | server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen); | |
1225 | else if (n_fds > 0) | |
1226 | log_warning("Got file descriptors via audit socket. Ignoring."); | |
f9a810be | 1227 | } |
a315ac4e LP |
1228 | |
1229 | close_many(fds, n_fds); | |
1230 | return 0; | |
f9a810be | 1231 | } |
d025f1e4 | 1232 | |
f9a810be LP |
1233 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1234 | Server *s = userdata; | |
d025f1e4 | 1235 | |
f9a810be | 1236 | assert(s); |
d025f1e4 | 1237 | |
f9a810be | 1238 | log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid); |
d025f1e4 | 1239 | |
f9a810be LP |
1240 | server_flush_to_var(s); |
1241 | server_sync(s); | |
8580d1f7 | 1242 | server_vacuum(s, false, false); |
d025f1e4 | 1243 | |
ac5b0c13 | 1244 | (void) touch("/run/systemd/journal/flushed"); |
74055aa7 | 1245 | |
f9a810be LP |
1246 | return 0; |
1247 | } | |
d025f1e4 | 1248 | |
f9a810be LP |
1249 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1250 | Server *s = userdata; | |
d025f1e4 | 1251 | |
f9a810be | 1252 | assert(s); |
d025f1e4 | 1253 | |
f9a810be LP |
1254 | log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid); |
1255 | server_rotate(s); | |
8580d1f7 | 1256 | server_vacuum(s, true, true); |
d025f1e4 | 1257 | |
f9a810be LP |
1258 | return 0; |
1259 | } | |
d025f1e4 | 1260 | |
f9a810be LP |
1261 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1262 | Server *s = userdata; | |
d025f1e4 | 1263 | |
f9a810be | 1264 | assert(s); |
d025f1e4 | 1265 | |
4daf54a8 | 1266 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1267 | |
6203e07a | 1268 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1269 | return 0; |
1270 | } | |
1271 | ||
f9a810be | 1272 | static int setup_signals(Server *s) { |
f9a810be | 1273 | int r; |
d025f1e4 ZJS |
1274 | |
1275 | assert(s); | |
1276 | ||
72c0a2c2 | 1277 | assert(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1) >= 0); |
d025f1e4 | 1278 | |
151b9b96 | 1279 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1280 | if (r < 0) |
1281 | return r; | |
1282 | ||
151b9b96 | 1283 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1284 | if (r < 0) |
1285 | return r; | |
d025f1e4 | 1286 | |
151b9b96 | 1287 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1288 | if (r < 0) |
1289 | return r; | |
d025f1e4 | 1290 | |
151b9b96 | 1291 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1292 | if (r < 0) |
1293 | return r; | |
d025f1e4 ZJS |
1294 | |
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | static int server_parse_proc_cmdline(Server *s) { | |
7fd1b19b | 1299 | _cleanup_free_ char *line = NULL; |
d581d9d9 | 1300 | const char *p; |
74df0fca | 1301 | int r; |
d025f1e4 | 1302 | |
74df0fca | 1303 | r = proc_cmdline(&line); |
b5884878 | 1304 | if (r < 0) { |
da927ba9 | 1305 | log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m"); |
d025f1e4 | 1306 | return 0; |
b5884878 | 1307 | } |
d025f1e4 | 1308 | |
d581d9d9 SS |
1309 | p = line; |
1310 | for(;;) { | |
7fd1b19b | 1311 | _cleanup_free_ char *word; |
d025f1e4 | 1312 | |
d581d9d9 SS |
1313 | r = extract_first_word(&p, &word, NULL, 0); |
1314 | if (r < 0) | |
1315 | return log_error_errno(r, "Failed to parse journald syntax \"%s\": %m", line); | |
1316 | ||
1317 | if (r == 0) | |
1318 | break; | |
d025f1e4 ZJS |
1319 | |
1320 | if (startswith(word, "systemd.journald.forward_to_syslog=")) { | |
1321 | r = parse_boolean(word + 35); | |
1322 | if (r < 0) | |
1323 | log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35); | |
1324 | else | |
1325 | s->forward_to_syslog = r; | |
1326 | } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) { | |
1327 | r = parse_boolean(word + 33); | |
1328 | if (r < 0) | |
1329 | log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33); | |
1330 | else | |
1331 | s->forward_to_kmsg = r; | |
1332 | } else if (startswith(word, "systemd.journald.forward_to_console=")) { | |
1333 | r = parse_boolean(word + 36); | |
1334 | if (r < 0) | |
1335 | log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36); | |
1336 | else | |
1337 | s->forward_to_console = r; | |
40b71e89 ST |
1338 | } else if (startswith(word, "systemd.journald.forward_to_wall=")) { |
1339 | r = parse_boolean(word + 33); | |
1340 | if (r < 0) | |
1341 | log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33); | |
1342 | else | |
1343 | s->forward_to_wall = r; | |
d025f1e4 ZJS |
1344 | } else if (startswith(word, "systemd.journald")) |
1345 | log_warning("Invalid systemd.journald parameter. Ignoring."); | |
d025f1e4 ZJS |
1346 | } |
1347 | ||
804ae586 | 1348 | /* do not warn about state here, since probably systemd already did */ |
db91ea32 | 1349 | return 0; |
d025f1e4 ZJS |
1350 | } |
1351 | ||
1352 | static int server_parse_config_file(Server *s) { | |
d025f1e4 ZJS |
1353 | assert(s); |
1354 | ||
a9edaeff JT |
1355 | return config_parse_many("/etc/systemd/journald.conf", |
1356 | CONF_DIRS_NULSTR("systemd/journald.conf"), | |
1357 | "Journal\0", | |
1358 | config_item_perf_lookup, journald_gperf_lookup, | |
1359 | false, s); | |
d025f1e4 ZJS |
1360 | } |
1361 | ||
f9a810be LP |
1362 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1363 | Server *s = userdata; | |
26687bf8 OS |
1364 | |
1365 | assert(s); | |
1366 | ||
f9a810be | 1367 | server_sync(s); |
26687bf8 OS |
1368 | return 0; |
1369 | } | |
1370 | ||
d07f7b9e | 1371 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1372 | int r; |
1373 | ||
26687bf8 OS |
1374 | assert(s); |
1375 | ||
d07f7b9e LP |
1376 | if (priority <= LOG_CRIT) { |
1377 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1378 | server_sync(s); | |
1379 | return 0; | |
1380 | } | |
1381 | ||
26687bf8 OS |
1382 | if (s->sync_scheduled) |
1383 | return 0; | |
1384 | ||
f9a810be LP |
1385 | if (s->sync_interval_usec > 0) { |
1386 | usec_t when; | |
ca267016 | 1387 | |
6a0f1f6d | 1388 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1389 | if (r < 0) |
1390 | return r; | |
26687bf8 | 1391 | |
f9a810be LP |
1392 | when += s->sync_interval_usec; |
1393 | ||
1394 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1395 | r = sd_event_add_time( |
1396 | s->event, | |
1397 | &s->sync_event_source, | |
1398 | CLOCK_MONOTONIC, | |
1399 | when, 0, | |
1400 | server_dispatch_sync, s); | |
f9a810be LP |
1401 | if (r < 0) |
1402 | return r; | |
1403 | ||
1404 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1405 | } else { | |
1406 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1407 | if (r < 0) | |
1408 | return r; | |
1409 | ||
1410 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1411 | } | |
26687bf8 | 1412 | if (r < 0) |
f9a810be | 1413 | return r; |
26687bf8 | 1414 | |
f9a810be LP |
1415 | s->sync_scheduled = true; |
1416 | } | |
26687bf8 OS |
1417 | |
1418 | return 0; | |
1419 | } | |
1420 | ||
0c24bb23 LP |
1421 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1422 | Server *s = userdata; | |
1423 | ||
1424 | assert(s); | |
1425 | ||
1426 | server_cache_hostname(s); | |
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | static int server_open_hostname(Server *s) { | |
1431 | int r; | |
1432 | ||
1433 | assert(s); | |
1434 | ||
1435 | s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY); | |
4a62c710 MS |
1436 | if (s->hostname_fd < 0) |
1437 | return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m"); | |
0c24bb23 | 1438 | |
151b9b96 | 1439 | r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s); |
0c24bb23 | 1440 | if (r < 0) { |
28def94c DR |
1441 | /* kernels prior to 3.2 don't support polling this file. Ignore |
1442 | * the failure. */ | |
1443 | if (r == -EPERM) { | |
e53fc357 | 1444 | log_warning_errno(r, "Failed to register hostname fd in event loop, ignoring: %m"); |
03e334a1 | 1445 | s->hostname_fd = safe_close(s->hostname_fd); |
28def94c DR |
1446 | return 0; |
1447 | } | |
1448 | ||
23bbb0de | 1449 | return log_error_errno(r, "Failed to register hostname fd in event loop: %m"); |
0c24bb23 LP |
1450 | } |
1451 | ||
1452 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
23bbb0de MS |
1453 | if (r < 0) |
1454 | return log_error_errno(r, "Failed to adjust priority of host name event source: %m"); | |
0c24bb23 LP |
1455 | |
1456 | return 0; | |
1457 | } | |
1458 | ||
d025f1e4 | 1459 | int server_init(Server *s) { |
13790add | 1460 | _cleanup_fdset_free_ FDSet *fds = NULL; |
d025f1e4 | 1461 | int n, r, fd; |
7d18d348 | 1462 | bool no_sockets; |
d025f1e4 ZJS |
1463 | |
1464 | assert(s); | |
1465 | ||
1466 | zero(*s); | |
875c2e22 | 1467 | s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->audit_fd = s->hostname_fd = -1; |
d025f1e4 ZJS |
1468 | s->compress = true; |
1469 | s->seal = true; | |
1470 | ||
26687bf8 OS |
1471 | s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC; |
1472 | s->sync_scheduled = false; | |
1473 | ||
d025f1e4 ZJS |
1474 | s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL; |
1475 | s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST; | |
1476 | ||
40b71e89 | 1477 | s->forward_to_wall = true; |
d025f1e4 | 1478 | |
e150e820 MB |
1479 | s->max_file_usec = DEFAULT_MAX_FILE_USEC; |
1480 | ||
d025f1e4 ZJS |
1481 | s->max_level_store = LOG_DEBUG; |
1482 | s->max_level_syslog = LOG_DEBUG; | |
1483 | s->max_level_kmsg = LOG_NOTICE; | |
1484 | s->max_level_console = LOG_INFO; | |
40b71e89 | 1485 | s->max_level_wall = LOG_EMERG; |
d025f1e4 | 1486 | |
8580d1f7 LP |
1487 | journal_reset_metrics(&s->system_metrics); |
1488 | journal_reset_metrics(&s->runtime_metrics); | |
d025f1e4 ZJS |
1489 | |
1490 | server_parse_config_file(s); | |
1491 | server_parse_proc_cmdline(s); | |
8580d1f7 | 1492 | |
d288f79f | 1493 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
b1389b0d ZJS |
1494 | log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", |
1495 | s->rate_limit_interval, s->rate_limit_burst); | |
d288f79f ZJS |
1496 | s->rate_limit_interval = s->rate_limit_burst = 0; |
1497 | } | |
d025f1e4 | 1498 | |
8580d1f7 | 1499 | (void) mkdir_p("/run/systemd/journal", 0755); |
d025f1e4 | 1500 | |
43cf8388 | 1501 | s->user_journals = ordered_hashmap_new(NULL); |
d025f1e4 ZJS |
1502 | if (!s->user_journals) |
1503 | return log_oom(); | |
1504 | ||
1505 | s->mmap = mmap_cache_new(); | |
1506 | if (!s->mmap) | |
1507 | return log_oom(); | |
1508 | ||
f9a810be | 1509 | r = sd_event_default(&s->event); |
23bbb0de MS |
1510 | if (r < 0) |
1511 | return log_error_errno(r, "Failed to create event loop: %m"); | |
d025f1e4 | 1512 | |
f9a810be LP |
1513 | sd_event_set_watchdog(s->event, true); |
1514 | ||
d025f1e4 | 1515 | n = sd_listen_fds(true); |
23bbb0de MS |
1516 | if (n < 0) |
1517 | return log_error_errno(n, "Failed to read listening file descriptors from environment: %m"); | |
d025f1e4 ZJS |
1518 | |
1519 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
1520 | ||
1521 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
1522 | ||
1523 | if (s->native_fd >= 0) { | |
1524 | log_error("Too many native sockets passed."); | |
1525 | return -EINVAL; | |
1526 | } | |
1527 | ||
1528 | s->native_fd = fd; | |
1529 | ||
1530 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
1531 | ||
1532 | if (s->stdout_fd >= 0) { | |
1533 | log_error("Too many stdout sockets passed."); | |
1534 | return -EINVAL; | |
1535 | } | |
1536 | ||
1537 | s->stdout_fd = fd; | |
1538 | ||
03ee5c38 LP |
1539 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 || |
1540 | sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) { | |
d025f1e4 ZJS |
1541 | |
1542 | if (s->syslog_fd >= 0) { | |
1543 | log_error("Too many /dev/log sockets passed."); | |
1544 | return -EINVAL; | |
1545 | } | |
1546 | ||
1547 | s->syslog_fd = fd; | |
1548 | ||
875c2e22 LP |
1549 | } else if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
1550 | ||
1551 | if (s->audit_fd >= 0) { | |
1552 | log_error("Too many audit sockets passed."); | |
1553 | return -EINVAL; | |
1554 | } | |
1555 | ||
1556 | s->audit_fd = fd; | |
1557 | ||
4ec3cd73 | 1558 | } else { |
4ec3cd73 | 1559 | |
13790add LP |
1560 | if (!fds) { |
1561 | fds = fdset_new(); | |
1562 | if (!fds) | |
1563 | return log_oom(); | |
1564 | } | |
4ec3cd73 | 1565 | |
13790add LP |
1566 | r = fdset_put(fds, fd); |
1567 | if (r < 0) | |
1568 | return log_oom(); | |
4ec3cd73 | 1569 | } |
d025f1e4 ZJS |
1570 | } |
1571 | ||
15d91bff ZJS |
1572 | /* Try to restore streams, but don't bother if this fails */ |
1573 | (void) server_restore_streams(s, fds); | |
d025f1e4 | 1574 | |
13790add LP |
1575 | if (fdset_size(fds) > 0) { |
1576 | log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds)); | |
1577 | fds = fdset_free(fds); | |
1578 | } | |
1579 | ||
7d18d348 ZJS |
1580 | no_sockets = s->native_fd < 0 && s->stdout_fd < 0 && s->syslog_fd < 0 && s->audit_fd < 0; |
1581 | ||
1582 | /* always open stdout, syslog, native, and kmsg sockets */ | |
37b7affe ZJS |
1583 | |
1584 | /* systemd-journald.socket: /run/systemd/journal/stdout */ | |
15d91bff ZJS |
1585 | r = server_open_stdout_socket(s); |
1586 | if (r < 0) | |
1587 | return r; | |
1588 | ||
37b7affe | 1589 | /* systemd-journald-dev-log.socket: /run/systemd/journal/dev-log */ |
13790add | 1590 | r = server_open_syslog_socket(s); |
d025f1e4 ZJS |
1591 | if (r < 0) |
1592 | return r; | |
1593 | ||
37b7affe | 1594 | /* systemd-journald.socket: /run/systemd/journal/socket */ |
13790add | 1595 | r = server_open_native_socket(s); |
d025f1e4 ZJS |
1596 | if (r < 0) |
1597 | return r; | |
1598 | ||
37b7affe | 1599 | /* /dev/ksmg */ |
d025f1e4 ZJS |
1600 | r = server_open_dev_kmsg(s); |
1601 | if (r < 0) | |
1602 | return r; | |
1603 | ||
7d18d348 ZJS |
1604 | /* Unless we got *some* sockets and not audit, open audit socket */ |
1605 | if (s->audit_fd >= 0 || no_sockets) { | |
1606 | r = server_open_audit(s); | |
1607 | if (r < 0) | |
1608 | return r; | |
1609 | } | |
875c2e22 | 1610 | |
d025f1e4 ZJS |
1611 | r = server_open_kernel_seqnum(s); |
1612 | if (r < 0) | |
1613 | return r; | |
1614 | ||
0c24bb23 LP |
1615 | r = server_open_hostname(s); |
1616 | if (r < 0) | |
1617 | return r; | |
1618 | ||
f9a810be | 1619 | r = setup_signals(s); |
d025f1e4 ZJS |
1620 | if (r < 0) |
1621 | return r; | |
1622 | ||
1623 | s->udev = udev_new(); | |
1624 | if (!s->udev) | |
1625 | return -ENOMEM; | |
1626 | ||
f9a810be | 1627 | s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst); |
d025f1e4 ZJS |
1628 | if (!s->rate_limit) |
1629 | return -ENOMEM; | |
1630 | ||
e9174f29 LP |
1631 | r = cg_get_root_path(&s->cgroup_root); |
1632 | if (r < 0) | |
1633 | return r; | |
1634 | ||
0c24bb23 LP |
1635 | server_cache_hostname(s); |
1636 | server_cache_boot_id(s); | |
1637 | server_cache_machine_id(s); | |
1638 | ||
804ae586 | 1639 | return system_journal_open(s, false); |
d025f1e4 ZJS |
1640 | } |
1641 | ||
1642 | void server_maybe_append_tags(Server *s) { | |
1643 | #ifdef HAVE_GCRYPT | |
1644 | JournalFile *f; | |
1645 | Iterator i; | |
1646 | usec_t n; | |
1647 | ||
1648 | n = now(CLOCK_REALTIME); | |
1649 | ||
1650 | if (s->system_journal) | |
1651 | journal_file_maybe_append_tag(s->system_journal, n); | |
1652 | ||
43cf8388 | 1653 | ORDERED_HASHMAP_FOREACH(f, s->user_journals, i) |
d025f1e4 ZJS |
1654 | journal_file_maybe_append_tag(f, n); |
1655 | #endif | |
1656 | } | |
1657 | ||
1658 | void server_done(Server *s) { | |
1659 | JournalFile *f; | |
1660 | assert(s); | |
1661 | ||
1662 | while (s->stdout_streams) | |
1663 | stdout_stream_free(s->stdout_streams); | |
1664 | ||
1665 | if (s->system_journal) | |
1666 | journal_file_close(s->system_journal); | |
1667 | ||
1668 | if (s->runtime_journal) | |
1669 | journal_file_close(s->runtime_journal); | |
1670 | ||
43cf8388 | 1671 | while ((f = ordered_hashmap_steal_first(s->user_journals))) |
d025f1e4 ZJS |
1672 | journal_file_close(f); |
1673 | ||
43cf8388 | 1674 | ordered_hashmap_free(s->user_journals); |
d025f1e4 | 1675 | |
f9a810be LP |
1676 | sd_event_source_unref(s->syslog_event_source); |
1677 | sd_event_source_unref(s->native_event_source); | |
1678 | sd_event_source_unref(s->stdout_event_source); | |
1679 | sd_event_source_unref(s->dev_kmsg_event_source); | |
875c2e22 | 1680 | sd_event_source_unref(s->audit_event_source); |
f9a810be LP |
1681 | sd_event_source_unref(s->sync_event_source); |
1682 | sd_event_source_unref(s->sigusr1_event_source); | |
1683 | sd_event_source_unref(s->sigusr2_event_source); | |
1684 | sd_event_source_unref(s->sigterm_event_source); | |
1685 | sd_event_source_unref(s->sigint_event_source); | |
0c24bb23 | 1686 | sd_event_source_unref(s->hostname_event_source); |
f9a810be | 1687 | sd_event_unref(s->event); |
d025f1e4 | 1688 | |
03e334a1 LP |
1689 | safe_close(s->syslog_fd); |
1690 | safe_close(s->native_fd); | |
1691 | safe_close(s->stdout_fd); | |
1692 | safe_close(s->dev_kmsg_fd); | |
875c2e22 | 1693 | safe_close(s->audit_fd); |
03e334a1 | 1694 | safe_close(s->hostname_fd); |
0c24bb23 | 1695 | |
d025f1e4 ZJS |
1696 | if (s->rate_limit) |
1697 | journal_rate_limit_free(s->rate_limit); | |
1698 | ||
1699 | if (s->kernel_seqnum) | |
1700 | munmap(s->kernel_seqnum, sizeof(uint64_t)); | |
1701 | ||
1702 | free(s->buffer); | |
1703 | free(s->tty_path); | |
e9174f29 | 1704 | free(s->cgroup_root); |
99d0966e | 1705 | free(s->hostname_field); |
d025f1e4 ZJS |
1706 | |
1707 | if (s->mmap) | |
1708 | mmap_cache_unref(s->mmap); | |
1709 | ||
3e044c49 | 1710 | udev_unref(s->udev); |
d025f1e4 | 1711 | } |
8580d1f7 LP |
1712 | |
1713 | static const char* const storage_table[_STORAGE_MAX] = { | |
1714 | [STORAGE_AUTO] = "auto", | |
1715 | [STORAGE_VOLATILE] = "volatile", | |
1716 | [STORAGE_PERSISTENT] = "persistent", | |
1717 | [STORAGE_NONE] = "none" | |
1718 | }; | |
1719 | ||
1720 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
1721 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
1722 | ||
1723 | static const char* const split_mode_table[_SPLIT_MAX] = { | |
1724 | [SPLIT_LOGIN] = "login", | |
1725 | [SPLIT_UID] = "uid", | |
1726 | [SPLIT_NONE] = "none", | |
1727 | }; | |
1728 | ||
1729 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
1730 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); |