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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
d025f1e4 | 2 | |
349cc4a5 | 3 | #if HAVE_SELINUX |
24882e06 LP |
4 | #include <selinux/selinux.h> |
5 | #endif | |
8580d1f7 LP |
6 | #include <sys/ioctl.h> |
7 | #include <sys/mman.h> | |
8 | #include <sys/signalfd.h> | |
9 | #include <sys/statvfs.h> | |
07630cea | 10 | #include <linux/sockios.h> |
24882e06 | 11 | |
8580d1f7 | 12 | #include "sd-daemon.h" |
74df0fca LP |
13 | #include "sd-journal.h" |
14 | #include "sd-messages.h" | |
8580d1f7 LP |
15 | |
16 | #include "acl-util.h" | |
b5efdb8a | 17 | #include "alloc-util.h" |
430f0182 | 18 | #include "audit-util.h" |
d025f1e4 | 19 | #include "cgroup-util.h" |
d025f1e4 | 20 | #include "conf-parser.h" |
a0956174 | 21 | #include "dirent-util.h" |
0dec689b | 22 | #include "extract-word.h" |
3ffd4af2 | 23 | #include "fd-util.h" |
33d52ab9 | 24 | #include "fileio.h" |
f97b34a6 | 25 | #include "format-util.h" |
f4f15635 | 26 | #include "fs-util.h" |
8580d1f7 | 27 | #include "hashmap.h" |
958b66ea | 28 | #include "hostname-util.h" |
4b58153d | 29 | #include "id128-util.h" |
afc5dbf3 | 30 | #include "io-util.h" |
8580d1f7 LP |
31 | #include "journal-authenticate.h" |
32 | #include "journal-file.h" | |
d025f1e4 ZJS |
33 | #include "journal-internal.h" |
34 | #include "journal-vacuum.h" | |
8580d1f7 | 35 | #include "journald-audit.h" |
22e3a02b | 36 | #include "journald-context.h" |
d025f1e4 | 37 | #include "journald-kmsg.h" |
d025f1e4 | 38 | #include "journald-native.h" |
8580d1f7 | 39 | #include "journald-rate-limit.h" |
3ffd4af2 | 40 | #include "journald-server.h" |
8580d1f7 LP |
41 | #include "journald-stream.h" |
42 | #include "journald-syslog.h" | |
4b58153d | 43 | #include "log.h" |
07630cea LP |
44 | #include "missing.h" |
45 | #include "mkdir.h" | |
6bedfcbb | 46 | #include "parse-util.h" |
4e731273 | 47 | #include "proc-cmdline.h" |
07630cea LP |
48 | #include "process-util.h" |
49 | #include "rm-rf.h" | |
50 | #include "selinux-util.h" | |
51 | #include "signal-util.h" | |
52 | #include "socket-util.h" | |
32917e33 | 53 | #include "stdio-util.h" |
8b43440b | 54 | #include "string-table.h" |
07630cea | 55 | #include "string-util.h" |
863a5610 | 56 | #include "syslog-util.h" |
22e3a02b | 57 | #include "user-util.h" |
d025f1e4 | 58 | |
d025f1e4 ZJS |
59 | #define USER_JOURNALS_MAX 1024 |
60 | ||
26687bf8 | 61 | #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE) |
7f1ad696 | 62 | #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC) |
3de8ff5a | 63 | #define DEFAULT_RATE_LIMIT_BURST 10000 |
e150e820 | 64 | #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH |
d025f1e4 | 65 | |
8580d1f7 | 66 | #define RECHECK_SPACE_USEC (30*USEC_PER_SEC) |
d025f1e4 | 67 | |
e22aa3d3 LP |
68 | #define NOTIFY_SNDBUF_SIZE (8*1024*1024) |
69 | ||
7a24f3bf VC |
70 | /* The period to insert between posting changes for coalescing */ |
71 | #define POST_CHANGE_TIMER_INTERVAL_USEC (250*USEC_PER_MSEC) | |
72 | ||
ec20fe5f LP |
73 | /* Pick a good default that is likely to fit into AF_UNIX and AF_INET SOCK_DGRAM datagrams, and even leaves some room |
74 | * for a bit of additional metadata. */ | |
75 | #define DEFAULT_LINE_MAX (48*1024) | |
76 | ||
a33687b7 LP |
77 | #define DEFERRED_CLOSES_MAX (4096) |
78 | ||
e0ed6db9 FB |
79 | static int determine_path_usage(Server *s, const char *path, uint64_t *ret_used, uint64_t *ret_free) { |
80 | _cleanup_closedir_ DIR *d = NULL; | |
81 | struct dirent *de; | |
82 | struct statvfs ss; | |
e0ed6db9 FB |
83 | |
84 | assert(ret_used); | |
85 | assert(ret_free); | |
86 | ||
266a4700 | 87 | d = opendir(path); |
e0ed6db9 FB |
88 | if (!d) |
89 | return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, | |
266a4700 | 90 | errno, "Failed to open %s: %m", path); |
e0ed6db9 FB |
91 | |
92 | if (fstatvfs(dirfd(d), &ss) < 0) | |
266a4700 | 93 | return log_error_errno(errno, "Failed to fstatvfs(%s): %m", path); |
e0ed6db9 FB |
94 | |
95 | *ret_free = ss.f_bsize * ss.f_bavail; | |
96 | *ret_used = 0; | |
97 | FOREACH_DIRENT_ALL(de, d, break) { | |
98 | struct stat st; | |
99 | ||
100 | if (!endswith(de->d_name, ".journal") && | |
101 | !endswith(de->d_name, ".journal~")) | |
102 | continue; | |
103 | ||
104 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) { | |
266a4700 | 105 | log_debug_errno(errno, "Failed to stat %s/%s, ignoring: %m", path, de->d_name); |
e0ed6db9 FB |
106 | continue; |
107 | } | |
108 | ||
109 | if (!S_ISREG(st.st_mode)) | |
110 | continue; | |
111 | ||
112 | *ret_used += (uint64_t) st.st_blocks * 512UL; | |
113 | } | |
114 | ||
115 | return 0; | |
116 | } | |
117 | ||
a0edc477 | 118 | static void cache_space_invalidate(JournalStorageSpace *space) { |
67319249 | 119 | zero(*space); |
a0edc477 FB |
120 | } |
121 | ||
57f443a6 | 122 | static int cache_space_refresh(Server *s, JournalStorage *storage) { |
23aba343 | 123 | JournalStorageSpace *space; |
266a4700 | 124 | JournalMetrics *metrics; |
23aba343 | 125 | uint64_t vfs_used, vfs_avail, avail; |
d025f1e4 | 126 | usec_t ts; |
e0ed6db9 | 127 | int r; |
d025f1e4 | 128 | |
8580d1f7 | 129 | assert(s); |
266a4700 | 130 | |
266a4700 | 131 | metrics = &storage->metrics; |
23aba343 | 132 | space = &storage->space; |
d025f1e4 | 133 | |
8580d1f7 | 134 | ts = now(CLOCK_MONOTONIC); |
d025f1e4 | 135 | |
3099caf2 | 136 | if (space->timestamp != 0 && space->timestamp + RECHECK_SPACE_USEC > ts) |
d025f1e4 ZJS |
137 | return 0; |
138 | ||
23aba343 | 139 | r = determine_path_usage(s, storage->path, &vfs_used, &vfs_avail); |
e0ed6db9 FB |
140 | if (r < 0) |
141 | return r; | |
d025f1e4 | 142 | |
23aba343 FB |
143 | space->vfs_used = vfs_used; |
144 | space->vfs_available = vfs_avail; | |
145 | ||
146 | avail = LESS_BY(vfs_avail, metrics->keep_free); | |
147 | ||
23aba343 FB |
148 | space->limit = MIN(MAX(vfs_used + avail, metrics->min_use), metrics->max_use); |
149 | space->available = LESS_BY(space->limit, vfs_used); | |
150 | space->timestamp = ts; | |
8580d1f7 LP |
151 | return 1; |
152 | } | |
153 | ||
3a19f215 FB |
154 | static void patch_min_use(JournalStorage *storage) { |
155 | assert(storage); | |
156 | ||
157 | /* Let's bump the min_use limit to the current usage on disk. We do | |
158 | * this when starting up and first opening the journal files. This way | |
159 | * sudden spikes in disk usage will not cause journald to vacuum files | |
160 | * without bounds. Note that this means that only a restart of journald | |
161 | * will make it reset this value. */ | |
162 | ||
163 | storage->metrics.min_use = MAX(storage->metrics.min_use, storage->space.vfs_used); | |
164 | } | |
165 | ||
3a19f215 | 166 | static int determine_space(Server *s, uint64_t *available, uint64_t *limit) { |
266a4700 | 167 | JournalStorage *js; |
57f443a6 | 168 | int r; |
8580d1f7 LP |
169 | |
170 | assert(s); | |
171 | ||
266a4700 | 172 | js = s->system_journal ? &s->system_storage : &s->runtime_storage; |
57f443a6 FB |
173 | |
174 | r = cache_space_refresh(s, js); | |
175 | if (r >= 0) { | |
176 | if (available) | |
177 | *available = js->space.available; | |
178 | if (limit) | |
179 | *limit = js->space.limit; | |
180 | } | |
181 | return r; | |
d025f1e4 ZJS |
182 | } |
183 | ||
cba5629e FB |
184 | void server_space_usage_message(Server *s, JournalStorage *storage) { |
185 | char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX], | |
186 | fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX], fb6[FORMAT_BYTES_MAX]; | |
187 | JournalMetrics *metrics; | |
cba5629e FB |
188 | |
189 | assert(s); | |
190 | ||
191 | if (!storage) | |
192 | storage = s->system_journal ? &s->system_storage : &s->runtime_storage; | |
193 | ||
57f443a6 | 194 | if (cache_space_refresh(s, storage) < 0) |
cba5629e FB |
195 | return; |
196 | ||
197 | metrics = &storage->metrics; | |
23aba343 | 198 | format_bytes(fb1, sizeof(fb1), storage->space.vfs_used); |
cba5629e FB |
199 | format_bytes(fb2, sizeof(fb2), metrics->max_use); |
200 | format_bytes(fb3, sizeof(fb3), metrics->keep_free); | |
23aba343 | 201 | format_bytes(fb4, sizeof(fb4), storage->space.vfs_available); |
cba5629e FB |
202 | format_bytes(fb5, sizeof(fb5), storage->space.limit); |
203 | format_bytes(fb6, sizeof(fb6), storage->space.available); | |
204 | ||
13181942 LP |
205 | server_driver_message(s, 0, |
206 | "MESSAGE_ID=" SD_MESSAGE_JOURNAL_USAGE_STR, | |
cba5629e FB |
207 | LOG_MESSAGE("%s (%s) is %s, max %s, %s free.", |
208 | storage->name, storage->path, fb1, fb5, fb6), | |
209 | "JOURNAL_NAME=%s", storage->name, | |
210 | "JOURNAL_PATH=%s", storage->path, | |
23aba343 | 211 | "CURRENT_USE=%"PRIu64, storage->space.vfs_used, |
cba5629e FB |
212 | "CURRENT_USE_PRETTY=%s", fb1, |
213 | "MAX_USE=%"PRIu64, metrics->max_use, | |
214 | "MAX_USE_PRETTY=%s", fb2, | |
215 | "DISK_KEEP_FREE=%"PRIu64, metrics->keep_free, | |
216 | "DISK_KEEP_FREE_PRETTY=%s", fb3, | |
23aba343 | 217 | "DISK_AVAILABLE=%"PRIu64, storage->space.vfs_available, |
cba5629e FB |
218 | "DISK_AVAILABLE_PRETTY=%s", fb4, |
219 | "LIMIT=%"PRIu64, storage->space.limit, | |
220 | "LIMIT_PRETTY=%s", fb5, | |
221 | "AVAILABLE=%"PRIu64, storage->space.available, | |
222 | "AVAILABLE_PRETTY=%s", fb6, | |
223 | NULL); | |
224 | } | |
225 | ||
2fce06b0 LP |
226 | static bool uid_for_system_journal(uid_t uid) { |
227 | ||
228 | /* Returns true if the specified UID shall get its data stored in the system journal*/ | |
229 | ||
230 | return uid_is_system(uid) || uid_is_dynamic(uid) || uid == UID_NOBODY; | |
231 | } | |
232 | ||
5c3bde3f | 233 | static void server_add_acls(JournalFile *f, uid_t uid) { |
349cc4a5 | 234 | #if HAVE_ACL |
5c3bde3f | 235 | int r; |
d025f1e4 | 236 | #endif |
d025f1e4 ZJS |
237 | assert(f); |
238 | ||
349cc4a5 | 239 | #if HAVE_ACL |
2fce06b0 | 240 | if (uid_for_system_journal(uid)) |
d025f1e4 ZJS |
241 | return; |
242 | ||
5c3bde3f ZJS |
243 | r = add_acls_for_user(f->fd, uid); |
244 | if (r < 0) | |
245 | log_warning_errno(r, "Failed to set ACL on %s, ignoring: %m", f->path); | |
d025f1e4 ZJS |
246 | #endif |
247 | } | |
248 | ||
7a24f3bf VC |
249 | static int open_journal( |
250 | Server *s, | |
251 | bool reliably, | |
252 | const char *fname, | |
253 | int flags, | |
254 | bool seal, | |
255 | JournalMetrics *metrics, | |
7a24f3bf | 256 | JournalFile **ret) { |
e8591544 | 257 | |
627df1dc | 258 | _cleanup_(journal_file_closep) JournalFile *f = NULL; |
e8591544 | 259 | int r; |
7a24f3bf VC |
260 | |
261 | assert(s); | |
262 | assert(fname); | |
263 | assert(ret); | |
264 | ||
265 | if (reliably) | |
1b7cf0e5 AG |
266 | r = journal_file_open_reliably(fname, flags, 0640, s->compress.enabled, s->compress.threshold_bytes, |
267 | seal, metrics, s->mmap, s->deferred_closes, NULL, &f); | |
7a24f3bf | 268 | else |
1b7cf0e5 AG |
269 | r = journal_file_open(-1, fname, flags, 0640, s->compress.enabled, s->compress.threshold_bytes, seal, |
270 | metrics, s->mmap, s->deferred_closes, NULL, &f); | |
271 | ||
7a24f3bf VC |
272 | if (r < 0) |
273 | return r; | |
274 | ||
e167d7fd | 275 | r = journal_file_enable_post_change_timer(f, s->event, POST_CHANGE_TIMER_INTERVAL_USEC); |
627df1dc | 276 | if (r < 0) |
7a24f3bf | 277 | return r; |
7a24f3bf | 278 | |
627df1dc | 279 | *ret = TAKE_PTR(f); |
7a24f3bf VC |
280 | return r; |
281 | } | |
282 | ||
6431c7e2 | 283 | static bool flushed_flag_is_set(void) { |
f78273c8 | 284 | return access("/run/systemd/journal/flushed", F_OK) >= 0; |
6431c7e2 VC |
285 | } |
286 | ||
b4e26d1d | 287 | static int system_journal_open(Server *s, bool flush_requested, bool relinquish_requested) { |
105bdb46 VC |
288 | const char *fn; |
289 | int r = 0; | |
290 | ||
291 | if (!s->system_journal && | |
f78273c8 | 292 | IN_SET(s->storage, STORAGE_PERSISTENT, STORAGE_AUTO) && |
b4e26d1d LP |
293 | (flush_requested || flushed_flag_is_set()) && |
294 | !relinquish_requested) { | |
105bdb46 VC |
295 | |
296 | /* If in auto mode: first try to create the machine | |
297 | * path, but not the prefix. | |
298 | * | |
299 | * If in persistent mode: create /var/log/journal and | |
300 | * the machine path */ | |
301 | ||
302 | if (s->storage == STORAGE_PERSISTENT) | |
303 | (void) mkdir_p("/var/log/journal/", 0755); | |
304 | ||
266a4700 | 305 | (void) mkdir(s->system_storage.path, 0755); |
105bdb46 | 306 | |
266a4700 FB |
307 | fn = strjoina(s->system_storage.path, "/system.journal"); |
308 | r = open_journal(s, true, fn, O_RDWR|O_CREAT, s->seal, &s->system_storage.metrics, &s->system_journal); | |
105bdb46 VC |
309 | if (r >= 0) { |
310 | server_add_acls(s->system_journal, 0); | |
57f443a6 | 311 | (void) cache_space_refresh(s, &s->system_storage); |
3a19f215 | 312 | patch_min_use(&s->system_storage); |
29bfb683 | 313 | } else { |
4c701096 | 314 | if (!IN_SET(r, -ENOENT, -EROFS)) |
105bdb46 VC |
315 | log_warning_errno(r, "Failed to open system journal: %m"); |
316 | ||
317 | r = 0; | |
318 | } | |
929eeb54 VC |
319 | |
320 | /* If the runtime journal is open, and we're post-flush, we're | |
321 | * recovering from a failed system journal rotate (ENOSPC) | |
322 | * for which the runtime journal was reopened. | |
323 | * | |
324 | * Perform an implicit flush to var, leaving the runtime | |
325 | * journal closed, now that the system journal is back. | |
326 | */ | |
f78273c8 LP |
327 | if (!flush_requested) |
328 | (void) server_flush_to_var(s, true); | |
105bdb46 VC |
329 | } |
330 | ||
331 | if (!s->runtime_journal && | |
332 | (s->storage != STORAGE_NONE)) { | |
333 | ||
266a4700 | 334 | fn = strjoina(s->runtime_storage.path, "/system.journal"); |
105bdb46 | 335 | |
b4e26d1d | 336 | if (s->system_journal && !relinquish_requested) { |
105bdb46 VC |
337 | |
338 | /* Try to open the runtime journal, but only | |
339 | * if it already exists, so that we can flush | |
340 | * it into the system journal */ | |
341 | ||
266a4700 | 342 | r = open_journal(s, false, fn, O_RDWR, false, &s->runtime_storage.metrics, &s->runtime_journal); |
105bdb46 VC |
343 | if (r < 0) { |
344 | if (r != -ENOENT) | |
345 | log_warning_errno(r, "Failed to open runtime journal: %m"); | |
346 | ||
347 | r = 0; | |
348 | } | |
349 | ||
350 | } else { | |
351 | ||
352 | /* OK, we really need the runtime journal, so create | |
353 | * it if necessary. */ | |
354 | ||
355 | (void) mkdir("/run/log", 0755); | |
356 | (void) mkdir("/run/log/journal", 0755); | |
357 | (void) mkdir_parents(fn, 0750); | |
358 | ||
266a4700 | 359 | r = open_journal(s, true, fn, O_RDWR|O_CREAT, false, &s->runtime_storage.metrics, &s->runtime_journal); |
105bdb46 VC |
360 | if (r < 0) |
361 | return log_error_errno(r, "Failed to open runtime journal: %m"); | |
362 | } | |
363 | ||
364 | if (s->runtime_journal) { | |
365 | server_add_acls(s->runtime_journal, 0); | |
57f443a6 | 366 | (void) cache_space_refresh(s, &s->runtime_storage); |
3a19f215 | 367 | patch_min_use(&s->runtime_storage); |
105bdb46 VC |
368 | } |
369 | } | |
370 | ||
371 | return r; | |
372 | } | |
373 | ||
d025f1e4 | 374 | static JournalFile* find_journal(Server *s, uid_t uid) { |
ed375beb | 375 | _cleanup_free_ char *p = NULL; |
d025f1e4 ZJS |
376 | int r; |
377 | JournalFile *f; | |
378 | sd_id128_t machine; | |
379 | ||
380 | assert(s); | |
381 | ||
105bdb46 VC |
382 | /* A rotate that fails to create the new journal (ENOSPC) leaves the |
383 | * rotated journal as NULL. Unless we revisit opening, even after | |
384 | * space is made available we'll continue to return NULL indefinitely. | |
385 | * | |
386 | * system_journal_open() is a noop if the journals are already open, so | |
387 | * we can just call it here to recover from failed rotates (or anything | |
388 | * else that's left the journals as NULL). | |
389 | * | |
390 | * Fixes https://github.com/systemd/systemd/issues/3968 */ | |
b4e26d1d | 391 | (void) system_journal_open(s, false, false); |
105bdb46 | 392 | |
d025f1e4 ZJS |
393 | /* We split up user logs only on /var, not on /run. If the |
394 | * runtime file is open, we write to it exclusively, in order | |
395 | * to guarantee proper order as soon as we flush /run to | |
396 | * /var and close the runtime file. */ | |
397 | ||
398 | if (s->runtime_journal) | |
399 | return s->runtime_journal; | |
400 | ||
2fce06b0 | 401 | if (uid_for_system_journal(uid)) |
d025f1e4 ZJS |
402 | return s->system_journal; |
403 | ||
4a0b58c4 | 404 | f = ordered_hashmap_get(s->user_journals, UID_TO_PTR(uid)); |
d025f1e4 ZJS |
405 | if (f) |
406 | return f; | |
407 | ||
e8591544 LP |
408 | r = sd_id128_get_machine(&machine); |
409 | if (r < 0) { | |
410 | log_debug_errno(r, "Failed to determine machine ID, using system log: %m"); | |
411 | return s->system_journal; | |
412 | } | |
413 | ||
de0671ee | 414 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal", |
d0307775 LP |
415 | SD_ID128_FORMAT_VAL(machine), uid) < 0) { |
416 | log_oom(); | |
d025f1e4 | 417 | return s->system_journal; |
d0307775 | 418 | } |
d025f1e4 | 419 | |
43cf8388 | 420 | while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) { |
d025f1e4 | 421 | /* Too many open? Then let's close one */ |
43cf8388 | 422 | f = ordered_hashmap_steal_first(s->user_journals); |
d025f1e4 | 423 | assert(f); |
69a3a6fd | 424 | (void) journal_file_close(f); |
d025f1e4 ZJS |
425 | } |
426 | ||
266a4700 | 427 | r = open_journal(s, true, p, O_RDWR|O_CREAT, s->seal, &s->system_storage.metrics, &f); |
d025f1e4 ZJS |
428 | if (r < 0) |
429 | return s->system_journal; | |
430 | ||
5c3bde3f | 431 | server_add_acls(f, uid); |
d025f1e4 | 432 | |
4a0b58c4 | 433 | r = ordered_hashmap_put(s->user_journals, UID_TO_PTR(uid), f); |
d025f1e4 | 434 | if (r < 0) { |
69a3a6fd | 435 | (void) journal_file_close(f); |
d025f1e4 ZJS |
436 | return s->system_journal; |
437 | } | |
438 | ||
439 | return f; | |
440 | } | |
441 | ||
ea69bd41 LP |
442 | static int do_rotate( |
443 | Server *s, | |
444 | JournalFile **f, | |
445 | const char* name, | |
446 | bool seal, | |
447 | uint32_t uid) { | |
448 | ||
fc55baee ZJS |
449 | int r; |
450 | assert(s); | |
451 | ||
452 | if (!*f) | |
453 | return -EINVAL; | |
454 | ||
1b7cf0e5 | 455 | r = journal_file_rotate(f, s->compress.enabled, s->compress.threshold_bytes, seal, s->deferred_closes); |
bb6b922f | 456 | if (r < 0) { |
fc55baee | 457 | if (*f) |
bb6b922f | 458 | return log_error_errno(r, "Failed to rotate %s: %m", (*f)->path); |
fc55baee | 459 | else |
bb6b922f YW |
460 | return log_error_errno(r, "Failed to create new %s journal: %m", name); |
461 | } | |
462 | ||
463 | server_add_acls(*f, uid); | |
2678031a | 464 | |
fc55baee ZJS |
465 | return r; |
466 | } | |
467 | ||
f760d8a8 LP |
468 | static void server_process_deferred_closes(Server *s) { |
469 | JournalFile *f; | |
470 | Iterator i; | |
471 | ||
472 | /* Perform any deferred closes which aren't still offlining. */ | |
a33687b7 LP |
473 | SET_FOREACH(f, s->deferred_closes, i) { |
474 | if (journal_file_is_offlining(f)) | |
475 | continue; | |
476 | ||
477 | (void) set_remove(s->deferred_closes, f); | |
478 | (void) journal_file_close(f); | |
479 | } | |
480 | } | |
481 | ||
482 | static void server_vacuum_deferred_closes(Server *s) { | |
483 | assert(s); | |
484 | ||
485 | /* Make some room in the deferred closes list, so that it doesn't grow without bounds */ | |
486 | if (set_size(s->deferred_closes) < DEFERRED_CLOSES_MAX) | |
487 | return; | |
488 | ||
489 | /* Let's first remove all journal files that might already have completed closing */ | |
490 | server_process_deferred_closes(s); | |
491 | ||
492 | /* And now, let's close some more until we reach the limit again. */ | |
493 | while (set_size(s->deferred_closes) >= DEFERRED_CLOSES_MAX) { | |
494 | JournalFile *f; | |
495 | ||
496 | assert_se(f = set_steal_first(s->deferred_closes)); | |
497 | journal_file_close(f); | |
498 | } | |
499 | } | |
500 | ||
501 | static int open_user_journal_directory(Server *s, DIR **ret_dir, char **ret_path) { | |
502 | _cleanup_closedir_ DIR *dir = NULL; | |
503 | _cleanup_free_ char *path = NULL; | |
504 | sd_id128_t machine; | |
505 | int r; | |
506 | ||
507 | assert(s); | |
508 | ||
509 | r = sd_id128_get_machine(&machine); | |
510 | if (r < 0) | |
511 | return log_error_errno(r, "Failed to determine machine ID, ignoring: %m"); | |
512 | ||
513 | if (asprintf(&path, "/var/log/journal/" SD_ID128_FORMAT_STR "/", SD_ID128_FORMAT_VAL(machine)) < 0) | |
514 | return log_oom(); | |
515 | ||
516 | dir = opendir(path); | |
517 | if (!dir) | |
518 | return log_error_errno(errno, "Failed to open user journal directory '%s': %m", path); | |
519 | ||
520 | if (ret_dir) | |
521 | *ret_dir = TAKE_PTR(dir); | |
522 | if (ret_path) | |
523 | *ret_path = TAKE_PTR(path); | |
524 | ||
525 | return 0; | |
f760d8a8 LP |
526 | } |
527 | ||
d025f1e4 | 528 | void server_rotate(Server *s) { |
a33687b7 LP |
529 | _cleanup_free_ char *path = NULL; |
530 | _cleanup_closedir_ DIR *d = NULL; | |
d025f1e4 | 531 | JournalFile *f; |
d025f1e4 | 532 | Iterator i; |
a33687b7 | 533 | void *k; |
d025f1e4 ZJS |
534 | int r; |
535 | ||
536 | log_debug("Rotating..."); | |
537 | ||
a33687b7 | 538 | /* First, rotate the system journal (either in its runtime flavour or in its runtime flavour) */ |
8580d1f7 LP |
539 | (void) do_rotate(s, &s->runtime_journal, "runtime", false, 0); |
540 | (void) do_rotate(s, &s->system_journal, "system", s->seal, 0); | |
d025f1e4 | 541 | |
a33687b7 | 542 | /* Then, rotate all user journals we have open (keeping them open) */ |
43cf8388 | 543 | ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { |
4a0b58c4 | 544 | r = do_rotate(s, &f, "user", s->seal, PTR_TO_UID(k)); |
fc55baee | 545 | if (r >= 0) |
43cf8388 | 546 | ordered_hashmap_replace(s->user_journals, k, f); |
fc55baee ZJS |
547 | else if (!f) |
548 | /* Old file has been closed and deallocated */ | |
43cf8388 | 549 | ordered_hashmap_remove(s->user_journals, k); |
d025f1e4 | 550 | } |
b58c888f | 551 | |
30acbadc LP |
552 | /* Finally, also rotate all user journals we currently do not have open. (But do so only if we actually have |
553 | * access to /var, i.e. are not in the log-to-runtime-journal mode). */ | |
554 | if (!s->runtime_journal && | |
555 | open_user_journal_directory(s, &d, &path) >= 0) { | |
556 | ||
a33687b7 LP |
557 | struct dirent *de; |
558 | ||
559 | FOREACH_DIRENT(de, d, log_warning_errno(errno, "Failed to enumerate %s, ignoring: %m", path)) { | |
560 | _cleanup_free_ char *u = NULL, *full = NULL; | |
561 | _cleanup_close_ int fd = -1; | |
562 | const char *a, *b; | |
563 | uid_t uid; | |
564 | ||
565 | a = startswith(de->d_name, "user-"); | |
566 | if (!a) | |
567 | continue; | |
568 | b = endswith(de->d_name, ".journal"); | |
569 | if (!b) | |
570 | continue; | |
571 | ||
572 | u = strndup(a, b-a); | |
573 | if (!u) { | |
574 | log_oom(); | |
575 | break; | |
576 | } | |
577 | ||
578 | r = parse_uid(u, &uid); | |
579 | if (r < 0) { | |
580 | log_debug_errno(r, "Failed to parse UID from file name '%s', ignoring: %m", de->d_name); | |
581 | continue; | |
582 | } | |
583 | ||
584 | /* Already rotated in the above loop? i.e. is it an open user journal? */ | |
585 | if (ordered_hashmap_contains(s->user_journals, UID_TO_PTR(uid))) | |
586 | continue; | |
587 | ||
588 | full = strjoin(path, de->d_name); | |
589 | if (!full) { | |
590 | log_oom(); | |
591 | break; | |
592 | } | |
593 | ||
594 | fd = openat(dirfd(d), de->d_name, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW|O_NONBLOCK); | |
595 | if (fd < 0) { | |
596 | log_full_errno(IN_SET(errno, ELOOP, ENOENT) ? LOG_DEBUG : LOG_WARNING, errno, | |
597 | "Failed to open journal file '%s' for rotation: %m", full); | |
598 | continue; | |
599 | } | |
600 | ||
601 | /* Make some room in the set of deferred close()s */ | |
602 | server_vacuum_deferred_closes(s); | |
603 | ||
604 | /* Open the file briefly, so that we can archive it */ | |
605 | r = journal_file_open(fd, | |
606 | full, | |
607 | O_RDWR, | |
608 | 0640, | |
609 | s->compress.enabled, | |
610 | s->compress.threshold_bytes, | |
611 | s->seal, | |
612 | &s->system_storage.metrics, | |
613 | s->mmap, | |
614 | s->deferred_closes, | |
615 | NULL, | |
616 | &f); | |
617 | if (r < 0) { | |
618 | log_warning_errno(r, "Failed to read journal file %s for rotation, trying to move it out of the way: %m", full); | |
619 | ||
620 | r = journal_file_dispose(dirfd(d), de->d_name); | |
621 | if (r < 0) | |
622 | log_warning_errno(r, "Failed to move %s out of the way, ignoring: %m", full); | |
623 | else | |
624 | log_debug("Successfully moved %s out of the way.", full); | |
625 | ||
626 | continue; | |
627 | } | |
628 | ||
629 | TAKE_FD(fd); /* Donated to journal_file_open() */ | |
630 | ||
631 | r = journal_file_archive(f); | |
632 | if (r < 0) | |
633 | log_debug_errno(r, "Failed to archive journal file '%s', ignoring: %m", full); | |
634 | ||
635 | f = journal_initiate_close(f, s->deferred_closes); | |
636 | } | |
637 | } | |
638 | ||
f760d8a8 | 639 | server_process_deferred_closes(s); |
d025f1e4 ZJS |
640 | } |
641 | ||
26687bf8 OS |
642 | void server_sync(Server *s) { |
643 | JournalFile *f; | |
26687bf8 OS |
644 | Iterator i; |
645 | int r; | |
646 | ||
26687bf8 | 647 | if (s->system_journal) { |
ac2e41f5 | 648 | r = journal_file_set_offline(s->system_journal, false); |
26687bf8 | 649 | if (r < 0) |
65089b82 | 650 | log_warning_errno(r, "Failed to sync system journal, ignoring: %m"); |
26687bf8 OS |
651 | } |
652 | ||
65c1d46b | 653 | ORDERED_HASHMAP_FOREACH(f, s->user_journals, i) { |
ac2e41f5 | 654 | r = journal_file_set_offline(f, false); |
26687bf8 | 655 | if (r < 0) |
65089b82 | 656 | log_warning_errno(r, "Failed to sync user journal, ignoring: %m"); |
26687bf8 OS |
657 | } |
658 | ||
f9a810be LP |
659 | if (s->sync_event_source) { |
660 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF); | |
661 | if (r < 0) | |
da927ba9 | 662 | log_error_errno(r, "Failed to disable sync timer source: %m"); |
f9a810be | 663 | } |
26687bf8 OS |
664 | |
665 | s->sync_scheduled = false; | |
666 | } | |
667 | ||
3a19f215 | 668 | static void do_vacuum(Server *s, JournalStorage *storage, bool verbose) { |
ea69bd41 | 669 | |
63c8666b ZJS |
670 | int r; |
671 | ||
8580d1f7 | 672 | assert(s); |
266a4700 | 673 | assert(storage); |
8580d1f7 | 674 | |
57f443a6 | 675 | (void) cache_space_refresh(s, storage); |
18e758bf FB |
676 | |
677 | if (verbose) | |
678 | server_space_usage_message(s, storage); | |
8580d1f7 | 679 | |
57f443a6 FB |
680 | r = journal_directory_vacuum(storage->path, storage->space.limit, |
681 | storage->metrics.n_max_files, s->max_retention_usec, | |
682 | &s->oldest_file_usec, verbose); | |
63c8666b | 683 | if (r < 0 && r != -ENOENT) |
266a4700 FB |
684 | log_warning_errno(r, "Failed to vacuum %s, ignoring: %m", storage->path); |
685 | ||
a0edc477 | 686 | cache_space_invalidate(&storage->space); |
63c8666b ZJS |
687 | } |
688 | ||
3a19f215 | 689 | int server_vacuum(Server *s, bool verbose) { |
8580d1f7 | 690 | assert(s); |
d025f1e4 ZJS |
691 | |
692 | log_debug("Vacuuming..."); | |
693 | ||
694 | s->oldest_file_usec = 0; | |
695 | ||
266a4700 | 696 | if (s->system_journal) |
3a19f215 | 697 | do_vacuum(s, &s->system_storage, verbose); |
266a4700 | 698 | if (s->runtime_journal) |
3a19f215 | 699 | do_vacuum(s, &s->runtime_storage, verbose); |
d025f1e4 | 700 | |
8580d1f7 | 701 | return 0; |
d025f1e4 ZJS |
702 | } |
703 | ||
0c24bb23 LP |
704 | static void server_cache_machine_id(Server *s) { |
705 | sd_id128_t id; | |
706 | int r; | |
707 | ||
708 | assert(s); | |
709 | ||
710 | r = sd_id128_get_machine(&id); | |
711 | if (r < 0) | |
712 | return; | |
713 | ||
714 | sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID=")); | |
715 | } | |
716 | ||
717 | static void server_cache_boot_id(Server *s) { | |
718 | sd_id128_t id; | |
719 | int r; | |
720 | ||
721 | assert(s); | |
722 | ||
723 | r = sd_id128_get_boot(&id); | |
724 | if (r < 0) | |
725 | return; | |
726 | ||
727 | sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID=")); | |
728 | } | |
729 | ||
730 | static void server_cache_hostname(Server *s) { | |
731 | _cleanup_free_ char *t = NULL; | |
732 | char *x; | |
733 | ||
734 | assert(s); | |
735 | ||
736 | t = gethostname_malloc(); | |
737 | if (!t) | |
738 | return; | |
739 | ||
740 | x = strappend("_HOSTNAME=", t); | |
741 | if (!x) | |
742 | return; | |
743 | ||
744 | free(s->hostname_field); | |
745 | s->hostname_field = x; | |
746 | } | |
747 | ||
8531ae70 | 748 | static bool shall_try_append_again(JournalFile *f, int r) { |
6e1045e5 | 749 | switch(r) { |
ae739cc1 | 750 | |
6e1045e5 ZJS |
751 | case -E2BIG: /* Hit configured limit */ |
752 | case -EFBIG: /* Hit fs limit */ | |
753 | case -EDQUOT: /* Quota limit hit */ | |
754 | case -ENOSPC: /* Disk full */ | |
d025f1e4 | 755 | log_debug("%s: Allocation limit reached, rotating.", f->path); |
6e1045e5 | 756 | return true; |
ae739cc1 | 757 | |
6e1045e5 ZJS |
758 | case -EIO: /* I/O error of some kind (mmap) */ |
759 | log_warning("%s: IO error, rotating.", f->path); | |
760 | return true; | |
ae739cc1 | 761 | |
6e1045e5 | 762 | case -EHOSTDOWN: /* Other machine */ |
d025f1e4 | 763 | log_info("%s: Journal file from other machine, rotating.", f->path); |
6e1045e5 | 764 | return true; |
ae739cc1 | 765 | |
6e1045e5 | 766 | case -EBUSY: /* Unclean shutdown */ |
d025f1e4 | 767 | log_info("%s: Unclean shutdown, rotating.", f->path); |
6e1045e5 | 768 | return true; |
ae739cc1 | 769 | |
6e1045e5 | 770 | case -EPROTONOSUPPORT: /* Unsupported feature */ |
d025f1e4 | 771 | log_info("%s: Unsupported feature, rotating.", f->path); |
6e1045e5 | 772 | return true; |
ae739cc1 | 773 | |
6e1045e5 ZJS |
774 | case -EBADMSG: /* Corrupted */ |
775 | case -ENODATA: /* Truncated */ | |
776 | case -ESHUTDOWN: /* Already archived */ | |
d025f1e4 | 777 | log_warning("%s: Journal file corrupted, rotating.", f->path); |
6e1045e5 | 778 | return true; |
ae739cc1 | 779 | |
6e1045e5 | 780 | case -EIDRM: /* Journal file has been deleted */ |
2678031a | 781 | log_warning("%s: Journal file has been deleted, rotating.", f->path); |
6e1045e5 | 782 | return true; |
ae739cc1 LP |
783 | |
784 | case -ETXTBSY: /* Journal file is from the future */ | |
c1a9199e | 785 | log_warning("%s: Journal file is from the future, rotating.", f->path); |
ae739cc1 LP |
786 | return true; |
787 | ||
5087825e LP |
788 | case -EAFNOSUPPORT: |
789 | log_warning("%s: underlying file system does not support memory mapping or another required file system feature.", f->path); | |
790 | return false; | |
791 | ||
6e1045e5 | 792 | default: |
d025f1e4 | 793 | return false; |
6e1045e5 | 794 | } |
d025f1e4 ZJS |
795 | } |
796 | ||
da6053d0 | 797 | static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, size_t n, int priority) { |
7c070017 | 798 | bool vacuumed = false, rotate = false; |
0f972d66 | 799 | struct dual_timestamp ts; |
d025f1e4 | 800 | JournalFile *f; |
d025f1e4 ZJS |
801 | int r; |
802 | ||
803 | assert(s); | |
804 | assert(iovec); | |
805 | assert(n > 0); | |
806 | ||
0f972d66 LP |
807 | /* Get the closest, linearized time we have for this log event from the event loop. (Note that we do not use |
808 | * the source time, and not even the time the event was originally seen, but instead simply the time we started | |
809 | * processing it, as we want strictly linear ordering in what we write out.) */ | |
810 | assert_se(sd_event_now(s->event, CLOCK_REALTIME, &ts.realtime) >= 0); | |
811 | assert_se(sd_event_now(s->event, CLOCK_MONOTONIC, &ts.monotonic) >= 0); | |
812 | ||
7c070017 LP |
813 | if (ts.realtime < s->last_realtime_clock) { |
814 | /* When the time jumps backwards, let's immediately rotate. Of course, this should not happen during | |
815 | * regular operation. However, when it does happen, then we should make sure that we start fresh files | |
816 | * to ensure that the entries in the journal files are strictly ordered by time, in order to ensure | |
817 | * bisection works correctly. */ | |
d025f1e4 | 818 | |
7c070017 LP |
819 | log_debug("Time jumped backwards, rotating."); |
820 | rotate = true; | |
821 | } else { | |
822 | ||
823 | f = find_journal(s, uid); | |
824 | if (!f) | |
825 | return; | |
826 | ||
827 | if (journal_file_rotate_suggested(f, s->max_file_usec)) { | |
828 | log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path); | |
829 | rotate = true; | |
830 | } | |
831 | } | |
d025f1e4 | 832 | |
7c070017 | 833 | if (rotate) { |
d025f1e4 | 834 | server_rotate(s); |
3a19f215 | 835 | server_vacuum(s, false); |
d025f1e4 ZJS |
836 | vacuumed = true; |
837 | ||
838 | f = find_journal(s, uid); | |
839 | if (!f) | |
840 | return; | |
841 | } | |
842 | ||
7c070017 LP |
843 | s->last_realtime_clock = ts.realtime; |
844 | ||
d180c349 | 845 | r = journal_file_append_entry(f, &ts, NULL, iovec, n, &s->seqnum, NULL, NULL); |
26687bf8 | 846 | if (r >= 0) { |
d07f7b9e | 847 | server_schedule_sync(s, priority); |
d025f1e4 | 848 | return; |
26687bf8 | 849 | } |
d025f1e4 ZJS |
850 | |
851 | if (vacuumed || !shall_try_append_again(f, r)) { | |
da6053d0 | 852 | log_error_errno(r, "Failed to write entry (%zu items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); |
d025f1e4 ZJS |
853 | return; |
854 | } | |
855 | ||
856 | server_rotate(s); | |
3a19f215 | 857 | server_vacuum(s, false); |
d025f1e4 ZJS |
858 | |
859 | f = find_journal(s, uid); | |
860 | if (!f) | |
861 | return; | |
862 | ||
863 | log_debug("Retrying write."); | |
d180c349 | 864 | r = journal_file_append_entry(f, &ts, NULL, iovec, n, &s->seqnum, NULL, NULL); |
8266e1c0 | 865 | if (r < 0) |
da6053d0 | 866 | log_error_errno(r, "Failed to write entry (%zu items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n)); |
8266e1c0 | 867 | else |
d07f7b9e | 868 | server_schedule_sync(s, priority); |
d025f1e4 ZJS |
869 | } |
870 | ||
22e3a02b LP |
871 | #define IOVEC_ADD_NUMERIC_FIELD(iovec, n, value, type, isset, format, field) \ |
872 | if (isset(value)) { \ | |
873 | char *k; \ | |
fbd0b64f | 874 | k = newa(char, STRLEN(field "=") + DECIMAL_STR_MAX(type) + 1); \ |
22e3a02b | 875 | sprintf(k, field "=" format, value); \ |
e6a7ec4b | 876 | iovec[n++] = IOVEC_MAKE_STRING(k); \ |
22e3a02b | 877 | } |
4b58153d | 878 | |
22e3a02b LP |
879 | #define IOVEC_ADD_STRING_FIELD(iovec, n, value, field) \ |
880 | if (!isempty(value)) { \ | |
881 | char *k; \ | |
882 | k = strjoina(field "=", value); \ | |
e6a7ec4b | 883 | iovec[n++] = IOVEC_MAKE_STRING(k); \ |
22e3a02b | 884 | } |
4b58153d | 885 | |
22e3a02b LP |
886 | #define IOVEC_ADD_ID128_FIELD(iovec, n, value, field) \ |
887 | if (!sd_id128_is_null(value)) { \ | |
888 | char *k; \ | |
fbd0b64f | 889 | k = newa(char, STRLEN(field "=") + SD_ID128_STRING_MAX); \ |
22e3a02b | 890 | sd_id128_to_string(value, stpcpy(k, field "=")); \ |
e6a7ec4b | 891 | iovec[n++] = IOVEC_MAKE_STRING(k); \ |
22e3a02b | 892 | } |
4b58153d | 893 | |
22e3a02b LP |
894 | #define IOVEC_ADD_SIZED_FIELD(iovec, n, value, value_size, field) \ |
895 | if (value_size > 0) { \ | |
896 | char *k; \ | |
fbd0b64f | 897 | k = newa(char, STRLEN(field "=") + value_size + 1); \ |
22e3a02b | 898 | *((char*) mempcpy(stpcpy(k, field "="), value, value_size)) = 0; \ |
e6a7ec4b | 899 | iovec[n++] = IOVEC_MAKE_STRING(k); \ |
22e3a02b | 900 | } \ |
4b58153d | 901 | |
d025f1e4 ZJS |
902 | static void dispatch_message_real( |
903 | Server *s, | |
d3070fbd | 904 | struct iovec *iovec, size_t n, size_t m, |
22e3a02b | 905 | const ClientContext *c, |
3b3154df | 906 | const struct timeval *tv, |
d07f7b9e | 907 | int priority, |
22e3a02b LP |
908 | pid_t object_pid) { |
909 | ||
910 | char source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)]; | |
084eeb86 | 911 | _cleanup_free_ char *cmdline1 = NULL, *cmdline2 = NULL; |
22e3a02b LP |
912 | uid_t journal_uid; |
913 | ClientContext *o; | |
d025f1e4 ZJS |
914 | |
915 | assert(s); | |
916 | assert(iovec); | |
917 | assert(n > 0); | |
d3070fbd LP |
918 | assert(n + |
919 | N_IOVEC_META_FIELDS + | |
920 | (pid_is_valid(object_pid) ? N_IOVEC_OBJECT_FIELDS : 0) + | |
921 | client_context_extra_fields_n_iovec(c) <= m); | |
19cace37 | 922 | |
22e3a02b LP |
923 | if (c) { |
924 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->pid, pid_t, pid_is_valid, PID_FMT, "_PID"); | |
925 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->uid, uid_t, uid_is_valid, UID_FMT, "_UID"); | |
926 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->gid, gid_t, gid_is_valid, GID_FMT, "_GID"); | |
4b58153d | 927 | |
084eeb86 ZJS |
928 | IOVEC_ADD_STRING_FIELD(iovec, n, c->comm, "_COMM"); /* At most TASK_COMM_LENGTH (16 bytes) */ |
929 | IOVEC_ADD_STRING_FIELD(iovec, n, c->exe, "_EXE"); /* A path, so at most PATH_MAX (4096 bytes) */ | |
d025f1e4 | 930 | |
084eeb86 ZJS |
931 | if (c->cmdline) |
932 | /* At most _SC_ARG_MAX (2MB usually), which is too much to put on stack. | |
933 | * Let's use a heap allocation for this one. */ | |
934 | cmdline1 = set_iovec_string_field(iovec, &n, "_CMDLINE=", c->cmdline); | |
ae018d9b | 935 | |
084eeb86 ZJS |
936 | IOVEC_ADD_STRING_FIELD(iovec, n, c->capeff, "_CAP_EFFECTIVE"); /* Read from /proc/.../status */ |
937 | IOVEC_ADD_SIZED_FIELD(iovec, n, c->label, c->label_size, "_SELINUX_CONTEXT"); | |
22e3a02b LP |
938 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->auditid, uint32_t, audit_session_is_valid, "%" PRIu32, "_AUDIT_SESSION"); |
939 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->loginuid, uid_t, uid_is_valid, UID_FMT, "_AUDIT_LOGINUID"); | |
d025f1e4 | 940 | |
084eeb86 | 941 | IOVEC_ADD_STRING_FIELD(iovec, n, c->cgroup, "_SYSTEMD_CGROUP"); /* A path */ |
22e3a02b LP |
942 | IOVEC_ADD_STRING_FIELD(iovec, n, c->session, "_SYSTEMD_SESSION"); |
943 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, c->owner_uid, uid_t, uid_is_valid, UID_FMT, "_SYSTEMD_OWNER_UID"); | |
084eeb86 | 944 | IOVEC_ADD_STRING_FIELD(iovec, n, c->unit, "_SYSTEMD_UNIT"); /* Unit names are bounded by UNIT_NAME_MAX */ |
22e3a02b LP |
945 | IOVEC_ADD_STRING_FIELD(iovec, n, c->user_unit, "_SYSTEMD_USER_UNIT"); |
946 | IOVEC_ADD_STRING_FIELD(iovec, n, c->slice, "_SYSTEMD_SLICE"); | |
947 | IOVEC_ADD_STRING_FIELD(iovec, n, c->user_slice, "_SYSTEMD_USER_SLICE"); | |
e7ff4e7f | 948 | |
22e3a02b | 949 | IOVEC_ADD_ID128_FIELD(iovec, n, c->invocation_id, "_SYSTEMD_INVOCATION_ID"); |
d3070fbd LP |
950 | |
951 | if (c->extra_fields_n_iovec > 0) { | |
952 | memcpy(iovec + n, c->extra_fields_iovec, c->extra_fields_n_iovec * sizeof(struct iovec)); | |
953 | n += c->extra_fields_n_iovec; | |
954 | } | |
d025f1e4 | 955 | } |
968f3196 | 956 | |
22e3a02b | 957 | assert(n <= m); |
968f3196 | 958 | |
22e3a02b | 959 | if (pid_is_valid(object_pid) && client_context_get(s, object_pid, NULL, NULL, 0, NULL, &o) >= 0) { |
968f3196 | 960 | |
22e3a02b LP |
961 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->pid, pid_t, pid_is_valid, PID_FMT, "OBJECT_PID"); |
962 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->uid, uid_t, uid_is_valid, UID_FMT, "OBJECT_UID"); | |
963 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->gid, gid_t, gid_is_valid, GID_FMT, "OBJECT_GID"); | |
968f3196 | 964 | |
084eeb86 | 965 | /* See above for size limits, only ->cmdline may be large, so use a heap allocation for it. */ |
22e3a02b LP |
966 | IOVEC_ADD_STRING_FIELD(iovec, n, o->comm, "OBJECT_COMM"); |
967 | IOVEC_ADD_STRING_FIELD(iovec, n, o->exe, "OBJECT_EXE"); | |
084eeb86 ZJS |
968 | if (o->cmdline) |
969 | cmdline2 = set_iovec_string_field(iovec, &n, "OBJECT_CMDLINE=", o->cmdline); | |
968f3196 | 970 | |
084eeb86 | 971 | IOVEC_ADD_STRING_FIELD(iovec, n, o->capeff, "OBJECT_CAP_EFFECTIVE"); |
22e3a02b | 972 | IOVEC_ADD_SIZED_FIELD(iovec, n, o->label, o->label_size, "OBJECT_SELINUX_CONTEXT"); |
22e3a02b LP |
973 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->auditid, uint32_t, audit_session_is_valid, "%" PRIu32, "OBJECT_AUDIT_SESSION"); |
974 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->loginuid, uid_t, uid_is_valid, UID_FMT, "OBJECT_AUDIT_LOGINUID"); | |
d473176a | 975 | |
22e3a02b LP |
976 | IOVEC_ADD_STRING_FIELD(iovec, n, o->cgroup, "OBJECT_SYSTEMD_CGROUP"); |
977 | IOVEC_ADD_STRING_FIELD(iovec, n, o->session, "OBJECT_SYSTEMD_SESSION"); | |
978 | IOVEC_ADD_NUMERIC_FIELD(iovec, n, o->owner_uid, uid_t, uid_is_valid, UID_FMT, "OBJECT_SYSTEMD_OWNER_UID"); | |
979 | IOVEC_ADD_STRING_FIELD(iovec, n, o->unit, "OBJECT_SYSTEMD_UNIT"); | |
980 | IOVEC_ADD_STRING_FIELD(iovec, n, o->user_unit, "OBJECT_SYSTEMD_USER_UNIT"); | |
981 | IOVEC_ADD_STRING_FIELD(iovec, n, o->slice, "OBJECT_SYSTEMD_SLICE"); | |
982 | IOVEC_ADD_STRING_FIELD(iovec, n, o->user_slice, "OBJECT_SYSTEMD_USER_SLICE"); | |
d473176a | 983 | |
22e3a02b | 984 | IOVEC_ADD_ID128_FIELD(iovec, n, o->invocation_id, "OBJECT_SYSTEMD_INVOCATION_ID="); |
968f3196 | 985 | } |
22e3a02b | 986 | |
968f3196 | 987 | assert(n <= m); |
d025f1e4 ZJS |
988 | |
989 | if (tv) { | |
398a50cd | 990 | sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=" USEC_FMT, timeval_load(tv)); |
e6a7ec4b | 991 | iovec[n++] = IOVEC_MAKE_STRING(source_time); |
d025f1e4 ZJS |
992 | } |
993 | ||
994 | /* Note that strictly speaking storing the boot id here is | |
995 | * redundant since the entry includes this in-line | |
996 | * anyway. However, we need this indexed, too. */ | |
0c24bb23 | 997 | if (!isempty(s->boot_id_field)) |
e6a7ec4b | 998 | iovec[n++] = IOVEC_MAKE_STRING(s->boot_id_field); |
d025f1e4 | 999 | |
0c24bb23 | 1000 | if (!isempty(s->machine_id_field)) |
e6a7ec4b | 1001 | iovec[n++] = IOVEC_MAKE_STRING(s->machine_id_field); |
d025f1e4 | 1002 | |
0c24bb23 | 1003 | if (!isempty(s->hostname_field)) |
e6a7ec4b | 1004 | iovec[n++] = IOVEC_MAKE_STRING(s->hostname_field); |
d025f1e4 ZJS |
1005 | |
1006 | assert(n <= m); | |
1007 | ||
22e3a02b LP |
1008 | if (s->split_mode == SPLIT_UID && c && uid_is_valid(c->uid)) |
1009 | /* Split up strictly by (non-root) UID */ | |
1010 | journal_uid = c->uid; | |
1011 | else if (s->split_mode == SPLIT_LOGIN && c && c->uid > 0 && uid_is_valid(c->owner_uid)) | |
edc3797f LP |
1012 | /* Split up by login UIDs. We do this only if the |
1013 | * realuid is not root, in order not to accidentally | |
1014 | * leak privileged information to the user that is | |
1015 | * logged by a privileged process that is part of an | |
7517e174 | 1016 | * unprivileged session. */ |
22e3a02b | 1017 | journal_uid = c->owner_uid; |
da499392 KS |
1018 | else |
1019 | journal_uid = 0; | |
759c945a | 1020 | |
d07f7b9e | 1021 | write_to_journal(s, journal_uid, iovec, n, priority); |
d025f1e4 ZJS |
1022 | } |
1023 | ||
13181942 | 1024 | void server_driver_message(Server *s, pid_t object_pid, const char *message_id, const char *format, ...) { |
22e3a02b | 1025 | |
d3070fbd LP |
1026 | struct iovec *iovec; |
1027 | size_t n = 0, k, m; | |
d025f1e4 | 1028 | va_list ap; |
22e3a02b | 1029 | int r; |
d025f1e4 ZJS |
1030 | |
1031 | assert(s); | |
1032 | assert(format); | |
1033 | ||
f643ae71 | 1034 | m = N_IOVEC_META_FIELDS + 5 + N_IOVEC_PAYLOAD_FIELDS + client_context_extra_fields_n_iovec(s->my_context) + N_IOVEC_OBJECT_FIELDS; |
d3070fbd LP |
1035 | iovec = newa(struct iovec, m); |
1036 | ||
4850d39a | 1037 | assert_cc(3 == LOG_FAC(LOG_DAEMON)); |
e6a7ec4b LP |
1038 | iovec[n++] = IOVEC_MAKE_STRING("SYSLOG_FACILITY=3"); |
1039 | iovec[n++] = IOVEC_MAKE_STRING("SYSLOG_IDENTIFIER=systemd-journald"); | |
b6fa2555 | 1040 | |
e6a7ec4b | 1041 | iovec[n++] = IOVEC_MAKE_STRING("_TRANSPORT=driver"); |
4850d39a | 1042 | assert_cc(6 == LOG_INFO); |
e6a7ec4b | 1043 | iovec[n++] = IOVEC_MAKE_STRING("PRIORITY=6"); |
d025f1e4 | 1044 | |
2b044526 | 1045 | if (message_id) |
e6a7ec4b | 1046 | iovec[n++] = IOVEC_MAKE_STRING(message_id); |
d3070fbd | 1047 | k = n; |
8a03c9ef ZJS |
1048 | |
1049 | va_start(ap, format); | |
d3070fbd | 1050 | r = log_format_iovec(iovec, m, &n, false, 0, format, ap); |
32917e33 | 1051 | /* Error handling below */ |
8a03c9ef ZJS |
1052 | va_end(ap); |
1053 | ||
32917e33 | 1054 | if (r >= 0) |
d3070fbd | 1055 | dispatch_message_real(s, iovec, n, m, s->my_context, NULL, LOG_INFO, object_pid); |
8a03c9ef | 1056 | |
d3070fbd LP |
1057 | while (k < n) |
1058 | free(iovec[k++].iov_base); | |
32917e33 ZJS |
1059 | |
1060 | if (r < 0) { | |
1061 | /* We failed to format the message. Emit a warning instead. */ | |
1062 | char buf[LINE_MAX]; | |
1063 | ||
1064 | xsprintf(buf, "MESSAGE=Entry printing failed: %s", strerror(-r)); | |
1065 | ||
1066 | n = 3; | |
e6a7ec4b LP |
1067 | iovec[n++] = IOVEC_MAKE_STRING("PRIORITY=4"); |
1068 | iovec[n++] = IOVEC_MAKE_STRING(buf); | |
d3070fbd | 1069 | dispatch_message_real(s, iovec, n, m, s->my_context, NULL, LOG_INFO, object_pid); |
32917e33 | 1070 | } |
d025f1e4 ZJS |
1071 | } |
1072 | ||
1073 | void server_dispatch_message( | |
1074 | Server *s, | |
d3070fbd | 1075 | struct iovec *iovec, size_t n, size_t m, |
22e3a02b | 1076 | ClientContext *c, |
3b3154df | 1077 | const struct timeval *tv, |
968f3196 ZJS |
1078 | int priority, |
1079 | pid_t object_pid) { | |
d025f1e4 | 1080 | |
8580d1f7 | 1081 | uint64_t available = 0; |
22e3a02b | 1082 | int rl; |
d025f1e4 ZJS |
1083 | |
1084 | assert(s); | |
1085 | assert(iovec || n == 0); | |
1086 | ||
1087 | if (n == 0) | |
1088 | return; | |
1089 | ||
1090 | if (LOG_PRI(priority) > s->max_level_store) | |
1091 | return; | |
1092 | ||
2f5df74a HHPF |
1093 | /* Stop early in case the information will not be stored |
1094 | * in a journal. */ | |
1095 | if (s->storage == STORAGE_NONE) | |
1096 | return; | |
1097 | ||
22e3a02b LP |
1098 | if (c && c->unit) { |
1099 | (void) determine_space(s, &available, NULL); | |
d025f1e4 | 1100 | |
90fc172e | 1101 | rl = journal_rate_limit_test(s->rate_limit, c->unit, c->log_rate_limit_interval, c->log_rate_limit_burst, priority & LOG_PRIMASK, available); |
22e3a02b LP |
1102 | if (rl == 0) |
1103 | return; | |
d025f1e4 | 1104 | |
22e3a02b LP |
1105 | /* Write a suppression message if we suppressed something */ |
1106 | if (rl > 1) | |
13181942 LP |
1107 | server_driver_message(s, c->pid, |
1108 | "MESSAGE_ID=" SD_MESSAGE_JOURNAL_DROPPED_STR, | |
1109 | LOG_MESSAGE("Suppressed %i messages from %s", rl - 1, c->unit), | |
5908ff1c | 1110 | "N_DROPPED=%i", rl - 1, |
22e3a02b | 1111 | NULL); |
d025f1e4 ZJS |
1112 | } |
1113 | ||
22e3a02b | 1114 | dispatch_message_real(s, iovec, n, m, c, tv, priority, object_pid); |
d025f1e4 ZJS |
1115 | } |
1116 | ||
f78273c8 | 1117 | int server_flush_to_var(Server *s, bool require_flag_file) { |
d025f1e4 ZJS |
1118 | sd_id128_t machine; |
1119 | sd_journal *j = NULL; | |
fbb63411 LP |
1120 | char ts[FORMAT_TIMESPAN_MAX]; |
1121 | usec_t start; | |
1122 | unsigned n = 0; | |
b4e26d1d | 1123 | int r, k; |
d025f1e4 ZJS |
1124 | |
1125 | assert(s); | |
1126 | ||
f78273c8 | 1127 | if (!IN_SET(s->storage, STORAGE_AUTO, STORAGE_PERSISTENT)) |
d025f1e4 ZJS |
1128 | return 0; |
1129 | ||
1130 | if (!s->runtime_journal) | |
1131 | return 0; | |
1132 | ||
f78273c8 LP |
1133 | if (require_flag_file && !flushed_flag_is_set()) |
1134 | return 0; | |
1135 | ||
b4e26d1d | 1136 | (void) system_journal_open(s, true, false); |
d025f1e4 ZJS |
1137 | |
1138 | if (!s->system_journal) | |
1139 | return 0; | |
1140 | ||
1141 | log_debug("Flushing to /var..."); | |
1142 | ||
fbb63411 LP |
1143 | start = now(CLOCK_MONOTONIC); |
1144 | ||
d025f1e4 | 1145 | r = sd_id128_get_machine(&machine); |
00a16861 | 1146 | if (r < 0) |
d025f1e4 | 1147 | return r; |
d025f1e4 ZJS |
1148 | |
1149 | r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY); | |
23bbb0de MS |
1150 | if (r < 0) |
1151 | return log_error_errno(r, "Failed to read runtime journal: %m"); | |
d025f1e4 | 1152 | |
93b73b06 LP |
1153 | sd_journal_set_data_threshold(j, 0); |
1154 | ||
d025f1e4 ZJS |
1155 | SD_JOURNAL_FOREACH(j) { |
1156 | Object *o = NULL; | |
1157 | JournalFile *f; | |
1158 | ||
1159 | f = j->current_file; | |
1160 | assert(f && f->current_offset > 0); | |
1161 | ||
fbb63411 LP |
1162 | n++; |
1163 | ||
d025f1e4 ZJS |
1164 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
1165 | if (r < 0) { | |
da927ba9 | 1166 | log_error_errno(r, "Can't read entry: %m"); |
d025f1e4 ZJS |
1167 | goto finish; |
1168 | } | |
1169 | ||
5a271b08 | 1170 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset); |
d025f1e4 ZJS |
1171 | if (r >= 0) |
1172 | continue; | |
1173 | ||
1174 | if (!shall_try_append_again(s->system_journal, r)) { | |
da927ba9 | 1175 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1176 | goto finish; |
1177 | } | |
1178 | ||
1179 | server_rotate(s); | |
3a19f215 | 1180 | server_vacuum(s, false); |
d025f1e4 | 1181 | |
253f59df LP |
1182 | if (!s->system_journal) { |
1183 | log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful."); | |
1184 | r = -EIO; | |
1185 | goto finish; | |
1186 | } | |
1187 | ||
d025f1e4 | 1188 | log_debug("Retrying write."); |
5a271b08 | 1189 | r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset); |
d025f1e4 | 1190 | if (r < 0) { |
da927ba9 | 1191 | log_error_errno(r, "Can't write entry: %m"); |
d025f1e4 ZJS |
1192 | goto finish; |
1193 | } | |
1194 | } | |
1195 | ||
804ae586 LP |
1196 | r = 0; |
1197 | ||
d025f1e4 | 1198 | finish: |
fd790d6f RM |
1199 | if (s->system_journal) |
1200 | journal_file_post_change(s->system_journal); | |
d025f1e4 | 1201 | |
804ae586 | 1202 | s->runtime_journal = journal_file_close(s->runtime_journal); |
d025f1e4 ZJS |
1203 | |
1204 | if (r >= 0) | |
c6878637 | 1205 | (void) rm_rf("/run/log/journal", REMOVE_ROOT); |
d025f1e4 | 1206 | |
763c7aa2 | 1207 | sd_journal_close(j); |
d025f1e4 | 1208 | |
13181942 | 1209 | server_driver_message(s, 0, NULL, |
8a03c9ef ZJS |
1210 | LOG_MESSAGE("Time spent on flushing to /var is %s for %u entries.", |
1211 | format_timespan(ts, sizeof(ts), now(CLOCK_MONOTONIC) - start, 0), | |
1212 | n), | |
1213 | NULL); | |
fbb63411 | 1214 | |
b4e26d1d LP |
1215 | k = touch("/run/systemd/journal/flushed"); |
1216 | if (k < 0) | |
1217 | log_warning_errno(k, "Failed to touch /run/systemd/journal/flushed, ignoring: %m"); | |
1218 | ||
d025f1e4 ZJS |
1219 | return r; |
1220 | } | |
1221 | ||
b4e26d1d LP |
1222 | static int server_relinquish_var(Server *s) { |
1223 | assert(s); | |
1224 | ||
1225 | if (s->storage == STORAGE_NONE) | |
1226 | return 0; | |
1227 | ||
1228 | if (s->runtime_journal && !s->system_journal) | |
1229 | return 0; | |
1230 | ||
1231 | log_debug("Relinquishing /var..."); | |
1232 | ||
1233 | (void) system_journal_open(s, false, true); | |
1234 | ||
1235 | s->system_journal = journal_file_close(s->system_journal); | |
1236 | ordered_hashmap_clear_with_destructor(s->user_journals, journal_file_close); | |
1237 | set_clear_with_destructor(s->deferred_closes, journal_file_close); | |
1238 | ||
1239 | if (unlink("/run/systemd/journal/flushed") < 0 && errno != ENOENT) | |
1240 | log_warning_errno(errno, "Failed to unlink /run/systemd/journal/flushed, ignoring: %m"); | |
1241 | ||
1242 | return 0; | |
1243 | } | |
1244 | ||
8531ae70 | 1245 | int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
f9a810be | 1246 | Server *s = userdata; |
a315ac4e LP |
1247 | struct ucred *ucred = NULL; |
1248 | struct timeval *tv = NULL; | |
1249 | struct cmsghdr *cmsg; | |
1250 | char *label = NULL; | |
1251 | size_t label_len = 0, m; | |
1252 | struct iovec iovec; | |
1253 | ssize_t n; | |
1254 | int *fds = NULL, v = 0; | |
da6053d0 | 1255 | size_t n_fds = 0; |
a315ac4e LP |
1256 | |
1257 | union { | |
1258 | struct cmsghdr cmsghdr; | |
1259 | ||
1260 | /* We use NAME_MAX space for the SELinux label | |
1261 | * here. The kernel currently enforces no | |
1262 | * limit, but according to suggestions from | |
1263 | * the SELinux people this will change and it | |
1264 | * will probably be identical to NAME_MAX. For | |
1265 | * now we use that, but this should be updated | |
1266 | * one day when the final limit is known. */ | |
1267 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1268 | CMSG_SPACE(sizeof(struct timeval)) + | |
1269 | CMSG_SPACE(sizeof(int)) + /* fd */ | |
1270 | CMSG_SPACE(NAME_MAX)]; /* selinux label */ | |
1271 | } control = {}; | |
1272 | ||
1273 | union sockaddr_union sa = {}; | |
1274 | ||
1275 | struct msghdr msghdr = { | |
1276 | .msg_iov = &iovec, | |
1277 | .msg_iovlen = 1, | |
1278 | .msg_control = &control, | |
1279 | .msg_controllen = sizeof(control), | |
1280 | .msg_name = &sa, | |
1281 | .msg_namelen = sizeof(sa), | |
1282 | }; | |
f9a810be | 1283 | |
d025f1e4 | 1284 | assert(s); |
875c2e22 | 1285 | assert(fd == s->native_fd || fd == s->syslog_fd || fd == s->audit_fd); |
f9a810be | 1286 | |
baaa35ad ZJS |
1287 | if (revents != EPOLLIN) |
1288 | return log_error_errno(SYNTHETIC_ERRNO(EIO), | |
1289 | "Got invalid event from epoll for datagram fd: %" PRIx32, | |
1290 | revents); | |
f9a810be | 1291 | |
22e3a02b LP |
1292 | /* Try to get the right size, if we can. (Not all sockets support SIOCINQ, hence we just try, but don't rely on |
1293 | * it.) */ | |
a315ac4e | 1294 | (void) ioctl(fd, SIOCINQ, &v); |
d025f1e4 | 1295 | |
a315ac4e LP |
1296 | /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */ |
1297 | m = PAGE_ALIGN(MAX3((size_t) v + 1, | |
1298 | (size_t) LINE_MAX, | |
1299 | ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1); | |
d025f1e4 | 1300 | |
a315ac4e LP |
1301 | if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m)) |
1302 | return log_oom(); | |
875c2e22 | 1303 | |
5cfa2c3d | 1304 | iovec = IOVEC_MAKE(s->buffer, s->buffer_size - 1); /* Leave room for trailing NUL we add later */ |
d025f1e4 | 1305 | |
a315ac4e LP |
1306 | n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1307 | if (n < 0) { | |
3742095b | 1308 | if (IN_SET(errno, EINTR, EAGAIN)) |
a315ac4e | 1309 | return 0; |
875c2e22 | 1310 | |
a315ac4e LP |
1311 | return log_error_errno(errno, "recvmsg() failed: %m"); |
1312 | } | |
875c2e22 | 1313 | |
bc2762a3 | 1314 | CMSG_FOREACH(cmsg, &msghdr) |
a315ac4e LP |
1315 | if (cmsg->cmsg_level == SOL_SOCKET && |
1316 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1317 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) | |
1318 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1319 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1320 | cmsg->cmsg_type == SCM_SECURITY) { | |
1321 | label = (char*) CMSG_DATA(cmsg); | |
1322 | label_len = cmsg->cmsg_len - CMSG_LEN(0); | |
1323 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1324 | cmsg->cmsg_type == SO_TIMESTAMP && | |
1325 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval))) | |
1326 | tv = (struct timeval*) CMSG_DATA(cmsg); | |
1327 | else if (cmsg->cmsg_level == SOL_SOCKET && | |
1328 | cmsg->cmsg_type == SCM_RIGHTS) { | |
1329 | fds = (int*) CMSG_DATA(cmsg); | |
1330 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
d025f1e4 ZJS |
1331 | } |
1332 | ||
a315ac4e LP |
1333 | /* And a trailing NUL, just in case */ |
1334 | s->buffer[n] = 0; | |
1335 | ||
1336 | if (fd == s->syslog_fd) { | |
1337 | if (n > 0 && n_fds == 0) | |
bb3ff70a | 1338 | server_process_syslog_message(s, s->buffer, n, ucred, tv, label, label_len); |
a315ac4e LP |
1339 | else if (n_fds > 0) |
1340 | log_warning("Got file descriptors via syslog socket. Ignoring."); | |
1341 | ||
1342 | } else if (fd == s->native_fd) { | |
1343 | if (n > 0 && n_fds == 0) | |
1344 | server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len); | |
1345 | else if (n == 0 && n_fds == 1) | |
1346 | server_process_native_file(s, fds[0], ucred, tv, label, label_len); | |
1347 | else if (n_fds > 0) | |
1348 | log_warning("Got too many file descriptors via native socket. Ignoring."); | |
1349 | ||
1350 | } else { | |
1351 | assert(fd == s->audit_fd); | |
1352 | ||
1353 | if (n > 0 && n_fds == 0) | |
1354 | server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen); | |
1355 | else if (n_fds > 0) | |
1356 | log_warning("Got file descriptors via audit socket. Ignoring."); | |
f9a810be | 1357 | } |
a315ac4e LP |
1358 | |
1359 | close_many(fds, n_fds); | |
1360 | return 0; | |
f9a810be | 1361 | } |
d025f1e4 | 1362 | |
1ec23479 | 1363 | static void server_full_flush(Server *s) { |
f9a810be | 1364 | assert(s); |
d025f1e4 | 1365 | |
f78273c8 | 1366 | (void) server_flush_to_var(s, false); |
f9a810be | 1367 | server_sync(s); |
3a19f215 | 1368 | server_vacuum(s, false); |
d025f1e4 | 1369 | |
18e758bf | 1370 | server_space_usage_message(s, NULL); |
f9a810be | 1371 | } |
d025f1e4 | 1372 | |
1ec23479 | 1373 | static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
f9a810be | 1374 | Server *s = userdata; |
1ec23479 LP |
1375 | |
1376 | assert(s); | |
1377 | ||
b4e26d1d | 1378 | log_info("Received SIGUSR1 signal from PID " PID_FMT ", as request to flush runtime journal.", si->ssi_pid); |
1ec23479 LP |
1379 | server_full_flush(s); |
1380 | ||
1381 | return 0; | |
1382 | } | |
1383 | ||
1384 | static void server_full_rotate(Server *s) { | |
33d52ab9 | 1385 | int r; |
d025f1e4 | 1386 | |
f9a810be | 1387 | assert(s); |
d025f1e4 | 1388 | |
f9a810be | 1389 | server_rotate(s); |
3a19f215 FB |
1390 | server_vacuum(s, true); |
1391 | ||
1392 | if (s->system_journal) | |
1393 | patch_min_use(&s->system_storage); | |
1394 | if (s->runtime_journal) | |
1395 | patch_min_use(&s->runtime_storage); | |
d025f1e4 | 1396 | |
dbd6e31c | 1397 | /* Let clients know when the most recent rotation happened. */ |
33d52ab9 LP |
1398 | r = write_timestamp_file_atomic("/run/systemd/journal/rotated", now(CLOCK_MONOTONIC)); |
1399 | if (r < 0) | |
1400 | log_warning_errno(r, "Failed to write /run/systemd/journal/rotated, ignoring: %m"); | |
1ec23479 LP |
1401 | } |
1402 | ||
1403 | static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { | |
1404 | Server *s = userdata; | |
1405 | ||
1406 | assert(s); | |
1407 | ||
b4e26d1d | 1408 | log_info("Received SIGUSR2 signal from PID " PID_FMT ", as request to rotate journal.", si->ssi_pid); |
1ec23479 | 1409 | server_full_rotate(s); |
dbd6e31c | 1410 | |
f9a810be LP |
1411 | return 0; |
1412 | } | |
d025f1e4 | 1413 | |
f9a810be LP |
1414 | static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { |
1415 | Server *s = userdata; | |
d025f1e4 | 1416 | |
f9a810be | 1417 | assert(s); |
d025f1e4 | 1418 | |
4daf54a8 | 1419 | log_received_signal(LOG_INFO, si); |
d025f1e4 | 1420 | |
6203e07a | 1421 | sd_event_exit(s->event, 0); |
d025f1e4 ZJS |
1422 | return 0; |
1423 | } | |
1424 | ||
1ec23479 | 1425 | static void server_full_sync(Server *s) { |
33d52ab9 | 1426 | int r; |
94b65516 LP |
1427 | |
1428 | assert(s); | |
1429 | ||
94b65516 LP |
1430 | server_sync(s); |
1431 | ||
1432 | /* Let clients know when the most recent sync happened. */ | |
33d52ab9 LP |
1433 | r = write_timestamp_file_atomic("/run/systemd/journal/synced", now(CLOCK_MONOTONIC)); |
1434 | if (r < 0) | |
1435 | log_warning_errno(r, "Failed to write /run/systemd/journal/synced, ignoring: %m"); | |
94b65516 | 1436 | |
1ec23479 LP |
1437 | return; |
1438 | } | |
1439 | ||
1440 | static int dispatch_sigrtmin1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) { | |
1441 | Server *s = userdata; | |
1442 | ||
1443 | assert(s); | |
1444 | ||
b4e26d1d | 1445 | log_debug("Received SIGRTMIN1 signal from PID " PID_FMT ", as request to sync.", si->ssi_pid ); |
1ec23479 LP |
1446 | server_full_sync(s); |
1447 | ||
94b65516 LP |
1448 | return 0; |
1449 | } | |
1450 | ||
f9a810be | 1451 | static int setup_signals(Server *s) { |
f9a810be | 1452 | int r; |
d025f1e4 ZJS |
1453 | |
1454 | assert(s); | |
1455 | ||
9bab3b65 | 1456 | assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, SIGRTMIN+1, -1) >= 0); |
d025f1e4 | 1457 | |
151b9b96 | 1458 | r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s); |
f9a810be LP |
1459 | if (r < 0) |
1460 | return r; | |
1461 | ||
151b9b96 | 1462 | r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s); |
f9a810be LP |
1463 | if (r < 0) |
1464 | return r; | |
d025f1e4 | 1465 | |
151b9b96 | 1466 | r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s); |
f9a810be LP |
1467 | if (r < 0) |
1468 | return r; | |
d025f1e4 | 1469 | |
337fabf7 | 1470 | /* Let's process SIGTERM late, so that we flush all queued messages to disk before we exit */ |
b374689c LP |
1471 | r = sd_event_source_set_priority(s->sigterm_event_source, SD_EVENT_PRIORITY_NORMAL+20); |
1472 | if (r < 0) | |
1473 | return r; | |
1474 | ||
337fabf7 LP |
1475 | /* When journald is invoked on the terminal (when debugging), it's useful if C-c is handled |
1476 | * equivalent to SIGTERM. */ | |
151b9b96 | 1477 | r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s); |
f9a810be LP |
1478 | if (r < 0) |
1479 | return r; | |
d025f1e4 | 1480 | |
b374689c LP |
1481 | r = sd_event_source_set_priority(s->sigint_event_source, SD_EVENT_PRIORITY_NORMAL+20); |
1482 | if (r < 0) | |
1483 | return r; | |
1484 | ||
337fabf7 LP |
1485 | /* SIGRTMIN+1 causes an immediate sync. We process this very late, so that everything else queued at |
1486 | * this point is really written to disk. Clients can watch /run/systemd/journal/synced with inotify | |
1487 | * until its mtime changes to see when a sync happened. */ | |
94b65516 LP |
1488 | r = sd_event_add_signal(s->event, &s->sigrtmin1_event_source, SIGRTMIN+1, dispatch_sigrtmin1, s); |
1489 | if (r < 0) | |
1490 | return r; | |
1491 | ||
1492 | r = sd_event_source_set_priority(s->sigrtmin1_event_source, SD_EVENT_PRIORITY_NORMAL+15); | |
1493 | if (r < 0) | |
1494 | return r; | |
1495 | ||
d025f1e4 ZJS |
1496 | return 0; |
1497 | } | |
1498 | ||
5707ecf3 ZJS |
1499 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
1500 | Server *s = data; | |
74df0fca | 1501 | int r; |
d025f1e4 | 1502 | |
5707ecf3 | 1503 | assert(s); |
d025f1e4 | 1504 | |
1d84ad94 LP |
1505 | if (proc_cmdline_key_streq(key, "systemd.journald.forward_to_syslog")) { |
1506 | ||
5707ecf3 | 1507 | r = value ? parse_boolean(value) : true; |
d581d9d9 | 1508 | if (r < 0) |
5707ecf3 ZJS |
1509 | log_warning("Failed to parse forward to syslog switch \"%s\". Ignoring.", value); |
1510 | else | |
1511 | s->forward_to_syslog = r; | |
1d84ad94 LP |
1512 | |
1513 | } else if (proc_cmdline_key_streq(key, "systemd.journald.forward_to_kmsg")) { | |
1514 | ||
5707ecf3 ZJS |
1515 | r = value ? parse_boolean(value) : true; |
1516 | if (r < 0) | |
1517 | log_warning("Failed to parse forward to kmsg switch \"%s\". Ignoring.", value); | |
1518 | else | |
1519 | s->forward_to_kmsg = r; | |
1d84ad94 LP |
1520 | |
1521 | } else if (proc_cmdline_key_streq(key, "systemd.journald.forward_to_console")) { | |
1522 | ||
5707ecf3 ZJS |
1523 | r = value ? parse_boolean(value) : true; |
1524 | if (r < 0) | |
1525 | log_warning("Failed to parse forward to console switch \"%s\". Ignoring.", value); | |
1526 | else | |
1527 | s->forward_to_console = r; | |
1d84ad94 LP |
1528 | |
1529 | } else if (proc_cmdline_key_streq(key, "systemd.journald.forward_to_wall")) { | |
1530 | ||
5707ecf3 ZJS |
1531 | r = value ? parse_boolean(value) : true; |
1532 | if (r < 0) | |
1533 | log_warning("Failed to parse forward to wall switch \"%s\". Ignoring.", value); | |
1534 | else | |
1535 | s->forward_to_wall = r; | |
1d84ad94 LP |
1536 | |
1537 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_console")) { | |
1538 | ||
1539 | if (proc_cmdline_value_missing(key, value)) | |
1540 | return 0; | |
1541 | ||
5707ecf3 ZJS |
1542 | r = log_level_from_string(value); |
1543 | if (r < 0) | |
1544 | log_warning("Failed to parse max level console value \"%s\". Ignoring.", value); | |
1545 | else | |
1546 | s->max_level_console = r; | |
1d84ad94 LP |
1547 | |
1548 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_store")) { | |
1549 | ||
1550 | if (proc_cmdline_value_missing(key, value)) | |
1551 | return 0; | |
1552 | ||
5707ecf3 ZJS |
1553 | r = log_level_from_string(value); |
1554 | if (r < 0) | |
1555 | log_warning("Failed to parse max level store value \"%s\". Ignoring.", value); | |
1556 | else | |
1557 | s->max_level_store = r; | |
1d84ad94 LP |
1558 | |
1559 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_syslog")) { | |
1560 | ||
1561 | if (proc_cmdline_value_missing(key, value)) | |
1562 | return 0; | |
1563 | ||
5707ecf3 ZJS |
1564 | r = log_level_from_string(value); |
1565 | if (r < 0) | |
1566 | log_warning("Failed to parse max level syslog value \"%s\". Ignoring.", value); | |
1567 | else | |
1568 | s->max_level_syslog = r; | |
1d84ad94 LP |
1569 | |
1570 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_kmsg")) { | |
1571 | ||
1572 | if (proc_cmdline_value_missing(key, value)) | |
1573 | return 0; | |
1574 | ||
5707ecf3 ZJS |
1575 | r = log_level_from_string(value); |
1576 | if (r < 0) | |
1577 | log_warning("Failed to parse max level kmsg value \"%s\". Ignoring.", value); | |
1578 | else | |
1579 | s->max_level_kmsg = r; | |
1d84ad94 LP |
1580 | |
1581 | } else if (proc_cmdline_key_streq(key, "systemd.journald.max_level_wall")) { | |
1582 | ||
1583 | if (proc_cmdline_value_missing(key, value)) | |
1584 | return 0; | |
1585 | ||
5707ecf3 ZJS |
1586 | r = log_level_from_string(value); |
1587 | if (r < 0) | |
1588 | log_warning("Failed to parse max level wall value \"%s\". Ignoring.", value); | |
1589 | else | |
1590 | s->max_level_wall = r; | |
1d84ad94 | 1591 | |
5707ecf3 ZJS |
1592 | } else if (startswith(key, "systemd.journald")) |
1593 | log_warning("Unknown journald kernel command line option \"%s\". Ignoring.", key); | |
d025f1e4 | 1594 | |
804ae586 | 1595 | /* do not warn about state here, since probably systemd already did */ |
db91ea32 | 1596 | return 0; |
d025f1e4 ZJS |
1597 | } |
1598 | ||
1599 | static int server_parse_config_file(Server *s) { | |
d025f1e4 ZJS |
1600 | assert(s); |
1601 | ||
43688c49 | 1602 | return config_parse_many_nulstr(PKGSYSCONFDIR "/journald.conf", |
da412854 YW |
1603 | CONF_PATHS_NULSTR("systemd/journald.conf.d"), |
1604 | "Journal\0", | |
1605 | config_item_perf_lookup, journald_gperf_lookup, | |
bcde742e | 1606 | CONFIG_PARSE_WARN, s); |
d025f1e4 ZJS |
1607 | } |
1608 | ||
f9a810be LP |
1609 | static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) { |
1610 | Server *s = userdata; | |
26687bf8 OS |
1611 | |
1612 | assert(s); | |
1613 | ||
f9a810be | 1614 | server_sync(s); |
26687bf8 OS |
1615 | return 0; |
1616 | } | |
1617 | ||
d07f7b9e | 1618 | int server_schedule_sync(Server *s, int priority) { |
26687bf8 OS |
1619 | int r; |
1620 | ||
26687bf8 OS |
1621 | assert(s); |
1622 | ||
d07f7b9e LP |
1623 | if (priority <= LOG_CRIT) { |
1624 | /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */ | |
1625 | server_sync(s); | |
1626 | return 0; | |
1627 | } | |
1628 | ||
26687bf8 OS |
1629 | if (s->sync_scheduled) |
1630 | return 0; | |
1631 | ||
f9a810be LP |
1632 | if (s->sync_interval_usec > 0) { |
1633 | usec_t when; | |
ca267016 | 1634 | |
6a0f1f6d | 1635 | r = sd_event_now(s->event, CLOCK_MONOTONIC, &when); |
f9a810be LP |
1636 | if (r < 0) |
1637 | return r; | |
26687bf8 | 1638 | |
f9a810be LP |
1639 | when += s->sync_interval_usec; |
1640 | ||
1641 | if (!s->sync_event_source) { | |
6a0f1f6d LP |
1642 | r = sd_event_add_time( |
1643 | s->event, | |
1644 | &s->sync_event_source, | |
1645 | CLOCK_MONOTONIC, | |
1646 | when, 0, | |
1647 | server_dispatch_sync, s); | |
f9a810be LP |
1648 | if (r < 0) |
1649 | return r; | |
1650 | ||
1651 | r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT); | |
1652 | } else { | |
1653 | r = sd_event_source_set_time(s->sync_event_source, when); | |
1654 | if (r < 0) | |
1655 | return r; | |
1656 | ||
1657 | r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT); | |
1658 | } | |
26687bf8 | 1659 | if (r < 0) |
f9a810be | 1660 | return r; |
26687bf8 | 1661 | |
f9a810be LP |
1662 | s->sync_scheduled = true; |
1663 | } | |
26687bf8 OS |
1664 | |
1665 | return 0; | |
1666 | } | |
1667 | ||
0c24bb23 LP |
1668 | static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1669 | Server *s = userdata; | |
1670 | ||
1671 | assert(s); | |
1672 | ||
1673 | server_cache_hostname(s); | |
1674 | return 0; | |
1675 | } | |
1676 | ||
1677 | static int server_open_hostname(Server *s) { | |
1678 | int r; | |
1679 | ||
1680 | assert(s); | |
1681 | ||
db4a47e9 LP |
1682 | s->hostname_fd = open("/proc/sys/kernel/hostname", |
1683 | O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_NOCTTY); | |
4a62c710 MS |
1684 | if (s->hostname_fd < 0) |
1685 | return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m"); | |
0c24bb23 | 1686 | |
151b9b96 | 1687 | r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s); |
0c24bb23 | 1688 | if (r < 0) { |
28def94c DR |
1689 | /* kernels prior to 3.2 don't support polling this file. Ignore |
1690 | * the failure. */ | |
1691 | if (r == -EPERM) { | |
e53fc357 | 1692 | log_warning_errno(r, "Failed to register hostname fd in event loop, ignoring: %m"); |
03e334a1 | 1693 | s->hostname_fd = safe_close(s->hostname_fd); |
28def94c DR |
1694 | return 0; |
1695 | } | |
1696 | ||
23bbb0de | 1697 | return log_error_errno(r, "Failed to register hostname fd in event loop: %m"); |
0c24bb23 LP |
1698 | } |
1699 | ||
1700 | r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10); | |
23bbb0de MS |
1701 | if (r < 0) |
1702 | return log_error_errno(r, "Failed to adjust priority of host name event source: %m"); | |
0c24bb23 LP |
1703 | |
1704 | return 0; | |
1705 | } | |
1706 | ||
e22aa3d3 LP |
1707 | static int dispatch_notify_event(sd_event_source *es, int fd, uint32_t revents, void *userdata) { |
1708 | Server *s = userdata; | |
1709 | int r; | |
1710 | ||
1711 | assert(s); | |
1712 | assert(s->notify_event_source == es); | |
1713 | assert(s->notify_fd == fd); | |
1714 | ||
e22aa3d3 | 1715 | /* The $NOTIFY_SOCKET is writable again, now send exactly one |
dd835265 | 1716 | * message on it. Either it's the watchdog event, the initial |
119e9655 LP |
1717 | * READY=1 event or an stdout stream event. If there's nothing |
1718 | * to write anymore, turn our event source off. The next time | |
1719 | * there's something to send it will be turned on again. */ | |
e22aa3d3 LP |
1720 | |
1721 | if (!s->sent_notify_ready) { | |
1722 | static const char p[] = | |
1723 | "READY=1\n" | |
1724 | "STATUS=Processing requests..."; | |
1725 | ssize_t l; | |
1726 | ||
1727 | l = send(s->notify_fd, p, strlen(p), MSG_DONTWAIT); | |
1728 | if (l < 0) { | |
1729 | if (errno == EAGAIN) | |
1730 | return 0; | |
1731 | ||
1732 | return log_error_errno(errno, "Failed to send READY=1 notification message: %m"); | |
1733 | } | |
1734 | ||
1735 | s->sent_notify_ready = true; | |
1736 | log_debug("Sent READY=1 notification."); | |
1737 | ||
119e9655 LP |
1738 | } else if (s->send_watchdog) { |
1739 | ||
1740 | static const char p[] = | |
1741 | "WATCHDOG=1"; | |
1742 | ||
1743 | ssize_t l; | |
1744 | ||
1745 | l = send(s->notify_fd, p, strlen(p), MSG_DONTWAIT); | |
1746 | if (l < 0) { | |
1747 | if (errno == EAGAIN) | |
1748 | return 0; | |
1749 | ||
1750 | return log_error_errno(errno, "Failed to send WATCHDOG=1 notification message: %m"); | |
1751 | } | |
1752 | ||
1753 | s->send_watchdog = false; | |
1754 | log_debug("Sent WATCHDOG=1 notification."); | |
1755 | ||
e22aa3d3 LP |
1756 | } else if (s->stdout_streams_notify_queue) |
1757 | /* Dispatch one stream notification event */ | |
1758 | stdout_stream_send_notify(s->stdout_streams_notify_queue); | |
1759 | ||
61233823 | 1760 | /* Leave us enabled if there's still more to do. */ |
119e9655 | 1761 | if (s->send_watchdog || s->stdout_streams_notify_queue) |
e22aa3d3 LP |
1762 | return 0; |
1763 | ||
1764 | /* There was nothing to do anymore, let's turn ourselves off. */ | |
1765 | r = sd_event_source_set_enabled(es, SD_EVENT_OFF); | |
1766 | if (r < 0) | |
1767 | return log_error_errno(r, "Failed to turn off notify event source: %m"); | |
1768 | ||
1769 | return 0; | |
1770 | } | |
1771 | ||
119e9655 LP |
1772 | static int dispatch_watchdog(sd_event_source *es, uint64_t usec, void *userdata) { |
1773 | Server *s = userdata; | |
1774 | int r; | |
1775 | ||
1776 | assert(s); | |
1777 | ||
1778 | s->send_watchdog = true; | |
1779 | ||
1780 | r = sd_event_source_set_enabled(s->notify_event_source, SD_EVENT_ON); | |
1781 | if (r < 0) | |
1782 | log_warning_errno(r, "Failed to turn on notify event source: %m"); | |
1783 | ||
1784 | r = sd_event_source_set_time(s->watchdog_event_source, usec + s->watchdog_usec / 2); | |
1785 | if (r < 0) | |
1786 | return log_error_errno(r, "Failed to restart watchdog event source: %m"); | |
1787 | ||
1788 | r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ON); | |
1789 | if (r < 0) | |
1790 | return log_error_errno(r, "Failed to enable watchdog event source: %m"); | |
1791 | ||
1792 | return 0; | |
1793 | } | |
1794 | ||
e22aa3d3 | 1795 | static int server_connect_notify(Server *s) { |
15a3e96f | 1796 | union sockaddr_union sa = {}; |
e22aa3d3 | 1797 | const char *e; |
15a3e96f | 1798 | int r, salen; |
e22aa3d3 LP |
1799 | |
1800 | assert(s); | |
1801 | assert(s->notify_fd < 0); | |
1802 | assert(!s->notify_event_source); | |
1803 | ||
1804 | /* | |
337fabf7 LP |
1805 | * So here's the problem: we'd like to send notification messages to PID 1, but we cannot do that via |
1806 | * sd_notify(), since that's synchronous, and we might end up blocking on it. Specifically: given | |
1807 | * that PID 1 might block on dbus-daemon during IPC, and dbus-daemon is logging to us, and might | |
1808 | * hence block on us, we might end up in a deadlock if we block on sending PID 1 notification | |
1809 | * messages — by generating a full blocking circle. To avoid this, let's create a non-blocking | |
1810 | * socket, and connect it to the notification socket, and then wait for POLLOUT before we send | |
1811 | * anything. This should efficiently avoid any deadlocks, as we'll never block on PID 1, hence PID 1 | |
1812 | * can safely block on dbus-daemon which can safely block on us again. | |
1813 | * | |
1814 | * Don't think that this issue is real? It is, see: https://github.com/systemd/systemd/issues/1505 | |
1815 | */ | |
e22aa3d3 LP |
1816 | |
1817 | e = getenv("NOTIFY_SOCKET"); | |
1818 | if (!e) | |
1819 | return 0; | |
1820 | ||
15a3e96f LP |
1821 | salen = sockaddr_un_set_path(&sa.un, e); |
1822 | if (salen < 0) | |
1823 | return log_error_errno(salen, "NOTIFY_SOCKET set to invalid value '%s': %m", e); | |
e22aa3d3 LP |
1824 | |
1825 | s->notify_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
1826 | if (s->notify_fd < 0) | |
1827 | return log_error_errno(errno, "Failed to create notify socket: %m"); | |
1828 | ||
1829 | (void) fd_inc_sndbuf(s->notify_fd, NOTIFY_SNDBUF_SIZE); | |
1830 | ||
15a3e96f | 1831 | r = connect(s->notify_fd, &sa.sa, salen); |
e22aa3d3 LP |
1832 | if (r < 0) |
1833 | return log_error_errno(errno, "Failed to connect to notify socket: %m"); | |
1834 | ||
1835 | r = sd_event_add_io(s->event, &s->notify_event_source, s->notify_fd, EPOLLOUT, dispatch_notify_event, s); | |
1836 | if (r < 0) | |
1837 | return log_error_errno(r, "Failed to watch notification socket: %m"); | |
1838 | ||
119e9655 LP |
1839 | if (sd_watchdog_enabled(false, &s->watchdog_usec) > 0) { |
1840 | s->send_watchdog = true; | |
1841 | ||
4de2402b | 1842 | r = sd_event_add_time(s->event, &s->watchdog_event_source, CLOCK_MONOTONIC, now(CLOCK_MONOTONIC) + s->watchdog_usec/2, s->watchdog_usec/4, dispatch_watchdog, s); |
119e9655 LP |
1843 | if (r < 0) |
1844 | return log_error_errno(r, "Failed to add watchdog time event: %m"); | |
1845 | } | |
1846 | ||
337fabf7 | 1847 | /* This should fire pretty soon, which we'll use to send the READY=1 event. */ |
e22aa3d3 LP |
1848 | |
1849 | return 0; | |
1850 | } | |
1851 | ||
4f413af2 LP |
1852 | static int synchronize_second_half(sd_event_source *event_source, void *userdata) { |
1853 | Varlink *link = userdata; | |
1854 | Server *s; | |
1855 | int r; | |
1856 | ||
1857 | assert(link); | |
1858 | assert_se(s = varlink_get_userdata(link)); | |
1859 | ||
1860 | /* This is the "second half" of the Synchronize() varlink method. This function is called as deferred | |
1861 | * event source at a low priority to ensure the synchronization completes after all queued log | |
1862 | * messages are processed. */ | |
1863 | server_full_sync(s); | |
1864 | ||
1865 | /* Let's get rid of the event source now, by marking it as non-floating again. It then has no ref | |
1866 | * anymore and is immediately destroyed after we return from this function, i.e. from this event | |
1867 | * source handler at the end. */ | |
1868 | r = sd_event_source_set_floating(event_source, false); | |
1869 | if (r < 0) | |
1870 | return log_error_errno(r, "Failed to mark event source as non-floating: %m"); | |
1871 | ||
1872 | return varlink_reply(link, NULL); | |
1873 | } | |
1874 | ||
1875 | static void synchronize_destroy(void *userdata) { | |
1876 | varlink_unref(userdata); | |
1877 | } | |
1878 | ||
1ec23479 | 1879 | static int vl_method_synchronize(Varlink *link, JsonVariant *parameters, VarlinkMethodFlags flags, void *userdata) { |
4f413af2 | 1880 | _cleanup_(sd_event_source_unrefp) sd_event_source *event_source = NULL; |
1ec23479 | 1881 | Server *s = userdata; |
4f413af2 | 1882 | int r; |
1ec23479 LP |
1883 | |
1884 | assert(link); | |
1885 | assert(s); | |
1886 | ||
1887 | if (json_variant_elements(parameters) > 0) | |
1888 | return varlink_error_invalid_parameter(link, parameters); | |
1889 | ||
1890 | log_info("Received client request to rotate journal."); | |
1ec23479 | 1891 | |
4f413af2 LP |
1892 | /* We don't do the main work now, but instead enqueue a deferred event loop job which will do |
1893 | * it. That job is scheduled at low priority, so that we return from this method call only after all | |
1894 | * queued but not processed log messages are written to disk, so that this method call returning can | |
1895 | * be used as nice synchronization point. */ | |
1896 | r = sd_event_add_defer(s->event, &event_source, synchronize_second_half, link); | |
1897 | if (r < 0) | |
1898 | return log_error_errno(r, "Failed to allocate defer event source: %m"); | |
1899 | ||
1900 | r = sd_event_source_set_destroy_callback(event_source, synchronize_destroy); | |
1901 | if (r < 0) | |
1902 | return log_error_errno(r, "Failed to set event source destroy callback: %m"); | |
1903 | ||
1904 | varlink_ref(link); /* The varlink object is now left to the destroy callack to unref */ | |
1905 | ||
1906 | r = sd_event_source_set_priority(event_source, SD_EVENT_PRIORITY_NORMAL+15); | |
1907 | if (r < 0) | |
1908 | return log_error_errno(r, "Failed to set defer event source priority: %m"); | |
1909 | ||
1910 | /* Give up ownership of this event source. It will now be destroyed along with event loop itself, | |
1911 | * unless it destroys itself earlier. */ | |
1912 | r = sd_event_source_set_floating(event_source, true); | |
1913 | if (r < 0) | |
1914 | return log_error_errno(r, "Failed to mark event source as floating: %m"); | |
1915 | ||
1916 | (void) sd_event_source_set_description(event_source, "deferred-sync"); | |
1917 | ||
1918 | return 0; | |
1ec23479 LP |
1919 | } |
1920 | ||
1921 | static int vl_method_rotate(Varlink *link, JsonVariant *parameters, VarlinkMethodFlags flags, void *userdata) { | |
1922 | Server *s = userdata; | |
1923 | ||
1924 | assert(link); | |
1925 | assert(s); | |
1926 | ||
1927 | if (json_variant_elements(parameters) > 0) | |
1928 | return varlink_error_invalid_parameter(link, parameters); | |
1929 | ||
1930 | log_info("Received client request to rotate journal."); | |
1931 | server_full_rotate(s); | |
1932 | ||
1933 | return varlink_reply(link, NULL); | |
1934 | } | |
1935 | ||
1936 | static int vl_method_flush_to_var(Varlink *link, JsonVariant *parameters, VarlinkMethodFlags flags, void *userdata) { | |
1937 | Server *s = userdata; | |
1938 | ||
1939 | assert(link); | |
1940 | assert(s); | |
1941 | ||
1942 | if (json_variant_elements(parameters) > 0) | |
1943 | return varlink_error_invalid_parameter(link, parameters); | |
1944 | ||
1945 | log_info("Received client request to flush runtime journal."); | |
1946 | server_full_flush(s); | |
1947 | ||
1948 | return varlink_reply(link, NULL); | |
1949 | } | |
1950 | ||
b4e26d1d LP |
1951 | static int vl_method_relinquish_var(Varlink *link, JsonVariant *parameters, VarlinkMethodFlags flags, void *userdata) { |
1952 | Server *s = userdata; | |
1953 | ||
1954 | assert(link); | |
1955 | assert(s); | |
1956 | ||
1957 | if (json_variant_elements(parameters) > 0) | |
1958 | return varlink_error_invalid_parameter(link, parameters); | |
1959 | ||
1960 | log_info("Received client request to relinquish /var access."); | |
1961 | server_relinquish_var(s); | |
1962 | ||
1963 | return varlink_reply(link, NULL); | |
1964 | } | |
1965 | ||
1ec23479 LP |
1966 | static int server_open_varlink(Server *s) { |
1967 | int r; | |
1968 | ||
1969 | assert(s); | |
1970 | ||
1971 | r = varlink_server_new(&s->varlink_server, VARLINK_SERVER_ROOT_ONLY); | |
1972 | if (r < 0) | |
1973 | return r; | |
1974 | ||
1975 | varlink_server_set_userdata(s->varlink_server, s); | |
1976 | ||
1977 | r = varlink_server_bind_method_many( | |
1978 | s->varlink_server, | |
b4e26d1d LP |
1979 | "io.systemd.Journal.Synchronize", vl_method_synchronize, |
1980 | "io.systemd.Journal.Rotate", vl_method_rotate, | |
1981 | "io.systemd.Journal.FlushToVar", vl_method_flush_to_var, | |
1982 | "io.systemd.Journal.RelinquishVar", vl_method_relinquish_var); | |
1ec23479 LP |
1983 | if (r < 0) |
1984 | return r; | |
1985 | ||
1986 | r = varlink_server_listen_address(s->varlink_server, "/run/systemd/journal/io.systemd.journal", 0600); | |
1987 | if (r < 0) | |
1988 | return r; | |
1989 | ||
1990 | r = varlink_server_attach_event(s->varlink_server, s->event, SD_EVENT_PRIORITY_NORMAL); | |
1991 | if (r < 0) | |
1992 | return r; | |
1993 | ||
1994 | return 0; | |
1995 | } | |
1996 | ||
d025f1e4 | 1997 | int server_init(Server *s) { |
13790add | 1998 | _cleanup_fdset_free_ FDSet *fds = NULL; |
d025f1e4 | 1999 | int n, r, fd; |
7d18d348 | 2000 | bool no_sockets; |
d025f1e4 ZJS |
2001 | |
2002 | assert(s); | |
2003 | ||
e4d9c985 LP |
2004 | *s = (Server) { |
2005 | .syslog_fd = -1, | |
2006 | .native_fd = -1, | |
2007 | .stdout_fd = -1, | |
2008 | .dev_kmsg_fd = -1, | |
2009 | .audit_fd = -1, | |
2010 | .hostname_fd = -1, | |
2011 | .notify_fd = -1, | |
d025f1e4 | 2012 | |
e4d9c985 LP |
2013 | .compress.enabled = true, |
2014 | .compress.threshold_bytes = (uint64_t) -1, | |
2015 | .seal = true, | |
2016 | .read_kmsg = true, | |
119e9655 | 2017 | |
e4d9c985 LP |
2018 | .watchdog_usec = USEC_INFINITY, |
2019 | ||
2020 | .sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC, | |
2021 | .sync_scheduled = false, | |
26687bf8 | 2022 | |
e4d9c985 LP |
2023 | .rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL, |
2024 | .rate_limit_burst = DEFAULT_RATE_LIMIT_BURST, | |
d025f1e4 | 2025 | |
e4d9c985 | 2026 | .forward_to_wall = true, |
d025f1e4 | 2027 | |
e4d9c985 | 2028 | .max_file_usec = DEFAULT_MAX_FILE_USEC, |
e150e820 | 2029 | |
e4d9c985 LP |
2030 | .max_level_store = LOG_DEBUG, |
2031 | .max_level_syslog = LOG_DEBUG, | |
2032 | .max_level_kmsg = LOG_NOTICE, | |
2033 | .max_level_console = LOG_INFO, | |
2034 | .max_level_wall = LOG_EMERG, | |
d025f1e4 | 2035 | |
e4d9c985 LP |
2036 | .line_max = DEFAULT_LINE_MAX, |
2037 | ||
2038 | .runtime_storage.name = "Runtime Journal", | |
2039 | .system_storage.name = "System Journal", | |
2040 | }; | |
ec20fe5f | 2041 | |
266a4700 FB |
2042 | journal_reset_metrics(&s->system_storage.metrics); |
2043 | journal_reset_metrics(&s->runtime_storage.metrics); | |
d025f1e4 ZJS |
2044 | |
2045 | server_parse_config_file(s); | |
1d84ad94 LP |
2046 | |
2047 | r = proc_cmdline_parse(parse_proc_cmdline_item, s, PROC_CMDLINE_STRIP_RD_PREFIX); | |
2048 | if (r < 0) | |
2049 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
8580d1f7 | 2050 | |
d288f79f | 2051 | if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) { |
b1389b0d ZJS |
2052 | log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0", |
2053 | s->rate_limit_interval, s->rate_limit_burst); | |
d288f79f ZJS |
2054 | s->rate_limit_interval = s->rate_limit_burst = 0; |
2055 | } | |
d025f1e4 | 2056 | |
8580d1f7 | 2057 | (void) mkdir_p("/run/systemd/journal", 0755); |
d025f1e4 | 2058 | |
43cf8388 | 2059 | s->user_journals = ordered_hashmap_new(NULL); |
d025f1e4 ZJS |
2060 | if (!s->user_journals) |
2061 | return log_oom(); | |
2062 | ||
2063 | s->mmap = mmap_cache_new(); | |
2064 | if (!s->mmap) | |
2065 | return log_oom(); | |
2066 | ||
b58c888f VC |
2067 | s->deferred_closes = set_new(NULL); |
2068 | if (!s->deferred_closes) | |
2069 | return log_oom(); | |
2070 | ||
f9a810be | 2071 | r = sd_event_default(&s->event); |
23bbb0de MS |
2072 | if (r < 0) |
2073 | return log_error_errno(r, "Failed to create event loop: %m"); | |
d025f1e4 ZJS |
2074 | |
2075 | n = sd_listen_fds(true); | |
23bbb0de MS |
2076 | if (n < 0) |
2077 | return log_error_errno(n, "Failed to read listening file descriptors from environment: %m"); | |
d025f1e4 ZJS |
2078 | |
2079 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) { | |
2080 | ||
2081 | if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) { | |
2082 | ||
baaa35ad ZJS |
2083 | if (s->native_fd >= 0) |
2084 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2085 | "Too many native sockets passed."); | |
d025f1e4 ZJS |
2086 | |
2087 | s->native_fd = fd; | |
2088 | ||
2089 | } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) { | |
2090 | ||
baaa35ad ZJS |
2091 | if (s->stdout_fd >= 0) |
2092 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2093 | "Too many stdout sockets passed."); | |
d025f1e4 ZJS |
2094 | |
2095 | s->stdout_fd = fd; | |
2096 | ||
03ee5c38 LP |
2097 | } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 || |
2098 | sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) { | |
d025f1e4 | 2099 | |
baaa35ad ZJS |
2100 | if (s->syslog_fd >= 0) |
2101 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2102 | "Too many /dev/log sockets passed."); | |
d025f1e4 ZJS |
2103 | |
2104 | s->syslog_fd = fd; | |
2105 | ||
875c2e22 LP |
2106 | } else if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
2107 | ||
baaa35ad ZJS |
2108 | if (s->audit_fd >= 0) |
2109 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2110 | "Too many audit sockets passed."); | |
875c2e22 LP |
2111 | |
2112 | s->audit_fd = fd; | |
2113 | ||
4ec3cd73 | 2114 | } else { |
4ec3cd73 | 2115 | |
13790add LP |
2116 | if (!fds) { |
2117 | fds = fdset_new(); | |
2118 | if (!fds) | |
2119 | return log_oom(); | |
2120 | } | |
4ec3cd73 | 2121 | |
13790add LP |
2122 | r = fdset_put(fds, fd); |
2123 | if (r < 0) | |
2124 | return log_oom(); | |
4ec3cd73 | 2125 | } |
d025f1e4 ZJS |
2126 | } |
2127 | ||
15d91bff ZJS |
2128 | /* Try to restore streams, but don't bother if this fails */ |
2129 | (void) server_restore_streams(s, fds); | |
d025f1e4 | 2130 | |
13790add LP |
2131 | if (fdset_size(fds) > 0) { |
2132 | log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds)); | |
2133 | fds = fdset_free(fds); | |
2134 | } | |
2135 | ||
7d18d348 ZJS |
2136 | no_sockets = s->native_fd < 0 && s->stdout_fd < 0 && s->syslog_fd < 0 && s->audit_fd < 0; |
2137 | ||
2138 | /* always open stdout, syslog, native, and kmsg sockets */ | |
37b7affe ZJS |
2139 | |
2140 | /* systemd-journald.socket: /run/systemd/journal/stdout */ | |
15d91bff ZJS |
2141 | r = server_open_stdout_socket(s); |
2142 | if (r < 0) | |
2143 | return r; | |
2144 | ||
37b7affe | 2145 | /* systemd-journald-dev-log.socket: /run/systemd/journal/dev-log */ |
13790add | 2146 | r = server_open_syslog_socket(s); |
d025f1e4 ZJS |
2147 | if (r < 0) |
2148 | return r; | |
2149 | ||
37b7affe | 2150 | /* systemd-journald.socket: /run/systemd/journal/socket */ |
13790add | 2151 | r = server_open_native_socket(s); |
d025f1e4 ZJS |
2152 | if (r < 0) |
2153 | return r; | |
2154 | ||
b2392ff3 | 2155 | /* /dev/kmsg */ |
d025f1e4 ZJS |
2156 | r = server_open_dev_kmsg(s); |
2157 | if (r < 0) | |
2158 | return r; | |
2159 | ||
7d18d348 ZJS |
2160 | /* Unless we got *some* sockets and not audit, open audit socket */ |
2161 | if (s->audit_fd >= 0 || no_sockets) { | |
2162 | r = server_open_audit(s); | |
2163 | if (r < 0) | |
2164 | return r; | |
2165 | } | |
875c2e22 | 2166 | |
1ec23479 LP |
2167 | r = server_open_varlink(s); |
2168 | if (r < 0) | |
2169 | return r; | |
2170 | ||
d025f1e4 ZJS |
2171 | r = server_open_kernel_seqnum(s); |
2172 | if (r < 0) | |
2173 | return r; | |
2174 | ||
0c24bb23 LP |
2175 | r = server_open_hostname(s); |
2176 | if (r < 0) | |
2177 | return r; | |
2178 | ||
f9a810be | 2179 | r = setup_signals(s); |
d025f1e4 ZJS |
2180 | if (r < 0) |
2181 | return r; | |
2182 | ||
90fc172e | 2183 | s->rate_limit = journal_rate_limit_new(); |
d025f1e4 ZJS |
2184 | if (!s->rate_limit) |
2185 | return -ENOMEM; | |
2186 | ||
e9174f29 LP |
2187 | r = cg_get_root_path(&s->cgroup_root); |
2188 | if (r < 0) | |
2189 | return r; | |
2190 | ||
0c24bb23 LP |
2191 | server_cache_hostname(s); |
2192 | server_cache_boot_id(s); | |
2193 | server_cache_machine_id(s); | |
2194 | ||
657ee2d8 YW |
2195 | s->runtime_storage.path = path_join("/run/log/journal", SERVER_MACHINE_ID(s)); |
2196 | s->system_storage.path = path_join("/var/log/journal", SERVER_MACHINE_ID(s)); | |
266a4700 FB |
2197 | if (!s->runtime_storage.path || !s->system_storage.path) |
2198 | return -ENOMEM; | |
2199 | ||
e22aa3d3 LP |
2200 | (void) server_connect_notify(s); |
2201 | ||
22e3a02b LP |
2202 | (void) client_context_acquire_default(s); |
2203 | ||
b4e26d1d | 2204 | return system_journal_open(s, false, false); |
d025f1e4 ZJS |
2205 | } |
2206 | ||
2207 | void server_maybe_append_tags(Server *s) { | |
349cc4a5 | 2208 | #if HAVE_GCRYPT |
d025f1e4 ZJS |
2209 | JournalFile *f; |
2210 | Iterator i; | |
2211 | usec_t n; | |
2212 | ||
2213 | n = now(CLOCK_REALTIME); | |
2214 | ||
2215 | if (s->system_journal) | |
2216 | journal_file_maybe_append_tag(s->system_journal, n); | |
2217 | ||
43cf8388 | 2218 | ORDERED_HASHMAP_FOREACH(f, s->user_journals, i) |
d025f1e4 ZJS |
2219 | journal_file_maybe_append_tag(f, n); |
2220 | #endif | |
2221 | } | |
2222 | ||
2223 | void server_done(Server *s) { | |
d025f1e4 ZJS |
2224 | assert(s); |
2225 | ||
f9168190 | 2226 | set_free_with_destructor(s->deferred_closes, journal_file_close); |
b58c888f | 2227 | |
d025f1e4 ZJS |
2228 | while (s->stdout_streams) |
2229 | stdout_stream_free(s->stdout_streams); | |
2230 | ||
22e3a02b LP |
2231 | client_context_flush_all(s); |
2232 | ||
c377a6f3 YW |
2233 | (void) journal_file_close(s->system_journal); |
2234 | (void) journal_file_close(s->runtime_journal); | |
d025f1e4 | 2235 | |
f9168190 | 2236 | ordered_hashmap_free_with_destructor(s->user_journals, journal_file_close); |
d025f1e4 | 2237 | |
1ec23479 LP |
2238 | varlink_server_unref(s->varlink_server); |
2239 | ||
f9a810be LP |
2240 | sd_event_source_unref(s->syslog_event_source); |
2241 | sd_event_source_unref(s->native_event_source); | |
2242 | sd_event_source_unref(s->stdout_event_source); | |
2243 | sd_event_source_unref(s->dev_kmsg_event_source); | |
875c2e22 | 2244 | sd_event_source_unref(s->audit_event_source); |
f9a810be LP |
2245 | sd_event_source_unref(s->sync_event_source); |
2246 | sd_event_source_unref(s->sigusr1_event_source); | |
2247 | sd_event_source_unref(s->sigusr2_event_source); | |
2248 | sd_event_source_unref(s->sigterm_event_source); | |
2249 | sd_event_source_unref(s->sigint_event_source); | |
94b65516 | 2250 | sd_event_source_unref(s->sigrtmin1_event_source); |
0c24bb23 | 2251 | sd_event_source_unref(s->hostname_event_source); |
e22aa3d3 | 2252 | sd_event_source_unref(s->notify_event_source); |
119e9655 | 2253 | sd_event_source_unref(s->watchdog_event_source); |
f9a810be | 2254 | sd_event_unref(s->event); |
d025f1e4 | 2255 | |
03e334a1 LP |
2256 | safe_close(s->syslog_fd); |
2257 | safe_close(s->native_fd); | |
2258 | safe_close(s->stdout_fd); | |
2259 | safe_close(s->dev_kmsg_fd); | |
875c2e22 | 2260 | safe_close(s->audit_fd); |
03e334a1 | 2261 | safe_close(s->hostname_fd); |
e22aa3d3 | 2262 | safe_close(s->notify_fd); |
0c24bb23 | 2263 | |
d025f1e4 ZJS |
2264 | if (s->rate_limit) |
2265 | journal_rate_limit_free(s->rate_limit); | |
2266 | ||
2267 | if (s->kernel_seqnum) | |
2268 | munmap(s->kernel_seqnum, sizeof(uint64_t)); | |
2269 | ||
2270 | free(s->buffer); | |
2271 | free(s->tty_path); | |
e9174f29 | 2272 | free(s->cgroup_root); |
99d0966e | 2273 | free(s->hostname_field); |
c6e9e16f ZJS |
2274 | free(s->runtime_storage.path); |
2275 | free(s->system_storage.path); | |
d025f1e4 | 2276 | |
e3d78cb1 | 2277 | mmap_cache_unref(s->mmap); |
d025f1e4 | 2278 | } |
8580d1f7 LP |
2279 | |
2280 | static const char* const storage_table[_STORAGE_MAX] = { | |
2281 | [STORAGE_AUTO] = "auto", | |
2282 | [STORAGE_VOLATILE] = "volatile", | |
2283 | [STORAGE_PERSISTENT] = "persistent", | |
2284 | [STORAGE_NONE] = "none" | |
2285 | }; | |
2286 | ||
2287 | DEFINE_STRING_TABLE_LOOKUP(storage, Storage); | |
2288 | DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting"); | |
2289 | ||
2290 | static const char* const split_mode_table[_SPLIT_MAX] = { | |
2291 | [SPLIT_LOGIN] = "login", | |
2292 | [SPLIT_UID] = "uid", | |
2293 | [SPLIT_NONE] = "none", | |
2294 | }; | |
2295 | ||
2296 | DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode); | |
2297 | DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting"); | |
ec20fe5f LP |
2298 | |
2299 | int config_parse_line_max( | |
2300 | const char* unit, | |
2301 | const char *filename, | |
2302 | unsigned line, | |
2303 | const char *section, | |
2304 | unsigned section_line, | |
2305 | const char *lvalue, | |
2306 | int ltype, | |
2307 | const char *rvalue, | |
2308 | void *data, | |
2309 | void *userdata) { | |
2310 | ||
2311 | size_t *sz = data; | |
2312 | int r; | |
2313 | ||
2314 | assert(filename); | |
2315 | assert(lvalue); | |
2316 | assert(rvalue); | |
2317 | assert(data); | |
2318 | ||
2319 | if (isempty(rvalue)) | |
2320 | /* Empty assignment means default */ | |
2321 | *sz = DEFAULT_LINE_MAX; | |
2322 | else { | |
2323 | uint64_t v; | |
2324 | ||
2325 | r = parse_size(rvalue, 1024, &v); | |
2326 | if (r < 0) { | |
2327 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse LineMax= value, ignoring: %s", rvalue); | |
2328 | return 0; | |
2329 | } | |
2330 | ||
2331 | if (v < 79) { | |
2332 | /* Why specify 79 here as minimum line length? Simply, because the most common traditional | |
2333 | * terminal size is 80ch, and it might make sense to break one character before the natural | |
2334 | * line break would occur on that. */ | |
2335 | log_syntax(unit, LOG_WARNING, filename, line, 0, "LineMax= too small, clamping to 79: %s", rvalue); | |
2336 | *sz = 79; | |
2337 | } else if (v > (uint64_t) (SSIZE_MAX-1)) { | |
2338 | /* So, why specify SSIZE_MAX-1 here? Because that's one below the largest size value read() | |
2339 | * can return, and we need one extra byte for the trailing NUL byte. Of course IRL such large | |
2340 | * memory allocations will fail anyway, hence this limit is mostly theoretical anyway, as we'll | |
2341 | * fail much earlier anyway. */ | |
2342 | log_syntax(unit, LOG_WARNING, filename, line, 0, "LineMax= too large, clamping to %" PRIu64 ": %s", (uint64_t) (SSIZE_MAX-1), rvalue); | |
2343 | *sz = SSIZE_MAX-1; | |
2344 | } else | |
2345 | *sz = (size_t) v; | |
2346 | } | |
2347 | ||
2348 | return 0; | |
2349 | } | |
1b7cf0e5 | 2350 | |
e3d36a8d LP |
2351 | int config_parse_compress( |
2352 | const char* unit, | |
2353 | const char *filename, | |
2354 | unsigned line, | |
2355 | const char *section, | |
2356 | unsigned section_line, | |
2357 | const char *lvalue, | |
2358 | int ltype, | |
2359 | const char *rvalue, | |
2360 | void *data, | |
2361 | void *userdata) { | |
2362 | ||
1b7cf0e5 AG |
2363 | JournalCompressOptions* compress = data; |
2364 | int r; | |
2365 | ||
e3d36a8d LP |
2366 | if (isempty(rvalue)) { |
2367 | compress->enabled = true; | |
2368 | compress->threshold_bytes = (uint64_t) -1; | |
2369 | } else if (streq(rvalue, "1")) { | |
1b7cf0e5 AG |
2370 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
2371 | "Compress= ambiguously specified as 1, enabling compression with default threshold"); | |
2372 | compress->enabled = true; | |
2373 | } else if (streq(rvalue, "0")) { | |
2374 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
2375 | "Compress= ambiguously specified as 0, disabling compression"); | |
2376 | compress->enabled = false; | |
e3d36a8d LP |
2377 | } else { |
2378 | r = parse_boolean(rvalue); | |
2379 | if (r < 0) { | |
2380 | r = parse_size(rvalue, 1024, &compress->threshold_bytes); | |
2381 | if (r < 0) | |
2382 | log_syntax(unit, LOG_ERR, filename, line, r, | |
2383 | "Failed to parse Compress= value, ignoring: %s", rvalue); | |
2384 | else | |
2385 | compress->enabled = true; | |
2386 | } else | |
2387 | compress->enabled = r; | |
2388 | } | |
1b7cf0e5 AG |
2389 | |
2390 | return 0; | |
2391 | } |