1 /* SPDX-License-Identifier: LGPL-2.1+ */
4 #include <selinux/selinux.h>
8 #include <sys/signalfd.h>
9 #include <sys/statvfs.h>
10 #include <linux/sockios.h>
12 #include "sd-daemon.h"
13 #include "sd-journal.h"
14 #include "sd-messages.h"
17 #include "alloc-util.h"
18 #include "audit-util.h"
19 #include "cgroup-util.h"
20 #include "conf-parser.h"
21 #include "dirent-util.h"
22 #include "extract-word.h"
25 #include "format-util.h"
28 #include "hostname-util.h"
29 #include "id128-util.h"
31 #include "journal-authenticate.h"
32 #include "journal-file.h"
33 #include "journal-internal.h"
34 #include "journal-vacuum.h"
35 #include "journald-audit.h"
36 #include "journald-context.h"
37 #include "journald-kmsg.h"
38 #include "journald-native.h"
39 #include "journald-rate-limit.h"
40 #include "journald-server.h"
41 #include "journald-stream.h"
42 #include "journald-syslog.h"
46 #include "parse-util.h"
47 #include "proc-cmdline.h"
48 #include "process-util.h"
50 #include "selinux-util.h"
51 #include "signal-util.h"
52 #include "socket-util.h"
53 #include "stdio-util.h"
54 #include "string-table.h"
55 #include "string-util.h"
56 #include "syslog-util.h"
57 #include "user-util.h"
59 #define USER_JOURNALS_MAX 1024
61 #define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE)
62 #define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC)
63 #define DEFAULT_RATE_LIMIT_BURST 10000
64 #define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH
66 #define RECHECK_SPACE_USEC (30*USEC_PER_SEC)
68 #define NOTIFY_SNDBUF_SIZE (8*1024*1024)
70 /* The period to insert between posting changes for coalescing */
71 #define POST_CHANGE_TIMER_INTERVAL_USEC (250*USEC_PER_MSEC)
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)
77 #define DEFERRED_CLOSES_MAX (4096)
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
;
89 return log_full_errno(errno
== ENOENT
? LOG_DEBUG
: LOG_ERR
,
90 errno
, "Failed to open %s: %m", path
);
92 if (fstatvfs(dirfd(d
), &ss
) < 0)
93 return log_error_errno(errno
, "Failed to fstatvfs(%s): %m", path
);
95 *ret_free
= ss
.f_bsize
* ss
.f_bavail
;
97 FOREACH_DIRENT_ALL(de
, d
, break) {
100 if (!endswith(de
->d_name
, ".journal") &&
101 !endswith(de
->d_name
, ".journal~"))
104 if (fstatat(dirfd(d
), de
->d_name
, &st
, AT_SYMLINK_NOFOLLOW
) < 0) {
105 log_debug_errno(errno
, "Failed to stat %s/%s, ignoring: %m", path
, de
->d_name
);
109 if (!S_ISREG(st
.st_mode
))
112 *ret_used
+= (uint64_t) st
.st_blocks
* 512UL;
118 static void cache_space_invalidate(JournalStorageSpace
*space
) {
122 static int cache_space_refresh(Server
*s
, JournalStorage
*storage
) {
123 JournalStorageSpace
*space
;
124 JournalMetrics
*metrics
;
125 uint64_t vfs_used
, vfs_avail
, avail
;
131 metrics
= &storage
->metrics
;
132 space
= &storage
->space
;
134 ts
= now(CLOCK_MONOTONIC
);
136 if (space
->timestamp
!= 0 && space
->timestamp
+ RECHECK_SPACE_USEC
> ts
)
139 r
= determine_path_usage(s
, storage
->path
, &vfs_used
, &vfs_avail
);
143 space
->vfs_used
= vfs_used
;
144 space
->vfs_available
= vfs_avail
;
146 avail
= LESS_BY(vfs_avail
, metrics
->keep_free
);
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
;
154 static void patch_min_use(JournalStorage
*storage
) {
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. */
163 storage
->metrics
.min_use
= MAX(storage
->metrics
.min_use
, storage
->space
.vfs_used
);
166 static int determine_space(Server
*s
, uint64_t *available
, uint64_t *limit
) {
172 js
= s
->system_journal
? &s
->system_storage
: &s
->runtime_storage
;
174 r
= cache_space_refresh(s
, js
);
177 *available
= js
->space
.available
;
179 *limit
= js
->space
.limit
;
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
;
192 storage
= s
->system_journal
? &s
->system_storage
: &s
->runtime_storage
;
194 if (cache_space_refresh(s
, storage
) < 0)
197 metrics
= &storage
->metrics
;
198 format_bytes(fb1
, sizeof(fb1
), storage
->space
.vfs_used
);
199 format_bytes(fb2
, sizeof(fb2
), metrics
->max_use
);
200 format_bytes(fb3
, sizeof(fb3
), metrics
->keep_free
);
201 format_bytes(fb4
, sizeof(fb4
), storage
->space
.vfs_available
);
202 format_bytes(fb5
, sizeof(fb5
), storage
->space
.limit
);
203 format_bytes(fb6
, sizeof(fb6
), storage
->space
.available
);
205 server_driver_message(s
, 0,
206 "MESSAGE_ID=" SD_MESSAGE_JOURNAL_USAGE_STR
,
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
,
211 "CURRENT_USE=%"PRIu64
, storage
->space
.vfs_used
,
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
,
217 "DISK_AVAILABLE=%"PRIu64
, storage
->space
.vfs_available
,
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
,
226 static bool uid_for_system_journal(uid_t uid
) {
228 /* Returns true if the specified UID shall get its data stored in the system journal*/
230 return uid_is_system(uid
) || uid_is_dynamic(uid
) || uid
== UID_NOBODY
;
233 static void server_add_acls(JournalFile
*f
, uid_t uid
) {
240 if (uid_for_system_journal(uid
))
243 r
= add_acls_for_user(f
->fd
, uid
);
245 log_warning_errno(r
, "Failed to set ACL on %s, ignoring: %m", f
->path
);
249 static int open_journal(
255 JournalMetrics
*metrics
,
258 _cleanup_(journal_file_closep
) JournalFile
*f
= NULL
;
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
);
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
);
275 r
= journal_file_enable_post_change_timer(f
, s
->event
, POST_CHANGE_TIMER_INTERVAL_USEC
);
283 static bool flushed_flag_is_set(void) {
284 return access("/run/systemd/journal/flushed", F_OK
) >= 0;
287 static int system_journal_open(Server
*s
, bool flush_requested
, bool relinquish_requested
) {
291 if (!s
->system_journal
&&
292 IN_SET(s
->storage
, STORAGE_PERSISTENT
, STORAGE_AUTO
) &&
293 (flush_requested
|| flushed_flag_is_set()) &&
294 !relinquish_requested
) {
296 /* If in auto mode: first try to create the machine
297 * path, but not the prefix.
299 * If in persistent mode: create /var/log/journal and
300 * the machine path */
302 if (s
->storage
== STORAGE_PERSISTENT
)
303 (void) mkdir_p("/var/log/journal/", 0755);
305 (void) mkdir(s
->system_storage
.path
, 0755);
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
);
310 server_add_acls(s
->system_journal
, 0);
311 (void) cache_space_refresh(s
, &s
->system_storage
);
312 patch_min_use(&s
->system_storage
);
314 if (!IN_SET(r
, -ENOENT
, -EROFS
))
315 log_warning_errno(r
, "Failed to open system journal: %m");
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.
324 * Perform an implicit flush to var, leaving the runtime
325 * journal closed, now that the system journal is back.
327 if (!flush_requested
)
328 (void) server_flush_to_var(s
, true);
331 if (!s
->runtime_journal
&&
332 (s
->storage
!= STORAGE_NONE
)) {
334 fn
= strjoina(s
->runtime_storage
.path
, "/system.journal");
336 if (s
->system_journal
&& !relinquish_requested
) {
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 */
342 r
= open_journal(s
, false, fn
, O_RDWR
, false, &s
->runtime_storage
.metrics
, &s
->runtime_journal
);
345 log_warning_errno(r
, "Failed to open runtime journal: %m");
352 /* OK, we really need the runtime journal, so create
353 * it if necessary. */
355 (void) mkdir("/run/log", 0755);
356 (void) mkdir("/run/log/journal", 0755);
357 (void) mkdir_parents(fn
, 0750);
359 r
= open_journal(s
, true, fn
, O_RDWR
|O_CREAT
, false, &s
->runtime_storage
.metrics
, &s
->runtime_journal
);
361 return log_error_errno(r
, "Failed to open runtime journal: %m");
364 if (s
->runtime_journal
) {
365 server_add_acls(s
->runtime_journal
, 0);
366 (void) cache_space_refresh(s
, &s
->runtime_storage
);
367 patch_min_use(&s
->runtime_storage
);
374 static JournalFile
* find_journal(Server
*s
, uid_t uid
) {
375 _cleanup_free_
char *p
= NULL
;
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.
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).
390 * Fixes https://github.com/systemd/systemd/issues/3968 */
391 (void) system_journal_open(s
, false, false);
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. */
398 if (s
->runtime_journal
)
399 return s
->runtime_journal
;
401 if (uid_for_system_journal(uid
))
402 return s
->system_journal
;
404 f
= ordered_hashmap_get(s
->user_journals
, UID_TO_PTR(uid
));
408 r
= sd_id128_get_machine(&machine
);
410 log_debug_errno(r
, "Failed to determine machine ID, using system log: %m");
411 return s
->system_journal
;
414 if (asprintf(&p
, "/var/log/journal/" SD_ID128_FORMAT_STR
"/user-"UID_FMT
".journal",
415 SD_ID128_FORMAT_VAL(machine
), uid
) < 0) {
417 return s
->system_journal
;
420 while (ordered_hashmap_size(s
->user_journals
) >= USER_JOURNALS_MAX
) {
421 /* Too many open? Then let's close one */
422 f
= ordered_hashmap_steal_first(s
->user_journals
);
424 (void) journal_file_close(f
);
427 r
= open_journal(s
, true, p
, O_RDWR
|O_CREAT
, s
->seal
, &s
->system_storage
.metrics
, &f
);
429 return s
->system_journal
;
431 server_add_acls(f
, uid
);
433 r
= ordered_hashmap_put(s
->user_journals
, UID_TO_PTR(uid
), f
);
435 (void) journal_file_close(f
);
436 return s
->system_journal
;
442 static int do_rotate(
455 r
= journal_file_rotate(f
, s
->compress
.enabled
, s
->compress
.threshold_bytes
, seal
, s
->deferred_closes
);
458 return log_error_errno(r
, "Failed to rotate %s: %m", (*f
)->path
);
460 return log_error_errno(r
, "Failed to create new %s journal: %m", name
);
463 server_add_acls(*f
, uid
);
468 static void server_process_deferred_closes(Server
*s
) {
472 /* Perform any deferred closes which aren't still offlining. */
473 SET_FOREACH(f
, s
->deferred_closes
, i
) {
474 if (journal_file_is_offlining(f
))
477 (void) set_remove(s
->deferred_closes
, f
);
478 (void) journal_file_close(f
);
482 static void server_vacuum_deferred_closes(Server
*s
) {
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
)
489 /* Let's first remove all journal files that might already have completed closing */
490 server_process_deferred_closes(s
);
492 /* And now, let's close some more until we reach the limit again. */
493 while (set_size(s
->deferred_closes
) >= DEFERRED_CLOSES_MAX
) {
496 assert_se(f
= set_steal_first(s
->deferred_closes
));
497 journal_file_close(f
);
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
;
509 r
= sd_id128_get_machine(&machine
);
511 return log_error_errno(r
, "Failed to determine machine ID, ignoring: %m");
513 if (asprintf(&path
, "/var/log/journal/" SD_ID128_FORMAT_STR
"/", SD_ID128_FORMAT_VAL(machine
)) < 0)
518 return log_error_errno(errno
, "Failed to open user journal directory '%s': %m", path
);
521 *ret_dir
= TAKE_PTR(dir
);
523 *ret_path
= TAKE_PTR(path
);
528 void server_rotate(Server
*s
) {
529 _cleanup_free_
char *path
= NULL
;
530 _cleanup_closedir_
DIR *d
= NULL
;
536 log_debug("Rotating...");
538 /* First, rotate the system journal (either in its runtime flavour or in its runtime flavour) */
539 (void) do_rotate(s
, &s
->runtime_journal
, "runtime", false, 0);
540 (void) do_rotate(s
, &s
->system_journal
, "system", s
->seal
, 0);
542 /* Then, rotate all user journals we have open (keeping them open) */
543 ORDERED_HASHMAP_FOREACH_KEY(f
, k
, s
->user_journals
, i
) {
544 r
= do_rotate(s
, &f
, "user", s
->seal
, PTR_TO_UID(k
));
546 ordered_hashmap_replace(s
->user_journals
, k
, f
);
548 /* Old file has been closed and deallocated */
549 ordered_hashmap_remove(s
->user_journals
, k
);
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) {
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;
565 a
= startswith(de
->d_name
, "user-");
568 b
= endswith(de
->d_name
, ".journal");
578 r
= parse_uid(u
, &uid
);
580 log_debug_errno(r
, "Failed to parse UID from file name '%s', ignoring: %m", de
->d_name
);
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
)))
588 full
= strjoin(path
, de
->d_name
);
594 fd
= openat(dirfd(d
), de
->d_name
, O_RDWR
|O_CLOEXEC
|O_NOCTTY
|O_NOFOLLOW
|O_NONBLOCK
);
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
);
601 /* Make some room in the set of deferred close()s */
602 server_vacuum_deferred_closes(s
);
604 /* Open the file briefly, so that we can archive it */
605 r
= journal_file_open(fd
,
610 s
->compress
.threshold_bytes
,
612 &s
->system_storage
.metrics
,
618 log_warning_errno(r
, "Failed to read journal file %s for rotation, trying to move it out of the way: %m", full
);
620 r
= journal_file_dispose(dirfd(d
), de
->d_name
);
622 log_warning_errno(r
, "Failed to move %s out of the way, ignoring: %m", full
);
624 log_debug("Successfully moved %s out of the way.", full
);
629 TAKE_FD(fd
); /* Donated to journal_file_open() */
631 r
= journal_file_archive(f
);
633 log_debug_errno(r
, "Failed to archive journal file '%s', ignoring: %m", full
);
635 f
= journal_initiate_close(f
, s
->deferred_closes
);
639 server_process_deferred_closes(s
);
642 void server_sync(Server
*s
) {
647 if (s
->system_journal
) {
648 r
= journal_file_set_offline(s
->system_journal
, false);
650 log_warning_errno(r
, "Failed to sync system journal, ignoring: %m");
653 ORDERED_HASHMAP_FOREACH(f
, s
->user_journals
, i
) {
654 r
= journal_file_set_offline(f
, false);
656 log_warning_errno(r
, "Failed to sync user journal, ignoring: %m");
659 if (s
->sync_event_source
) {
660 r
= sd_event_source_set_enabled(s
->sync_event_source
, SD_EVENT_OFF
);
662 log_error_errno(r
, "Failed to disable sync timer source: %m");
665 s
->sync_scheduled
= false;
668 static void do_vacuum(Server
*s
, JournalStorage
*storage
, bool verbose
) {
675 (void) cache_space_refresh(s
, storage
);
678 server_space_usage_message(s
, storage
);
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
);
683 if (r
< 0 && r
!= -ENOENT
)
684 log_warning_errno(r
, "Failed to vacuum %s, ignoring: %m", storage
->path
);
686 cache_space_invalidate(&storage
->space
);
689 int server_vacuum(Server
*s
, bool verbose
) {
692 log_debug("Vacuuming...");
694 s
->oldest_file_usec
= 0;
696 if (s
->system_journal
)
697 do_vacuum(s
, &s
->system_storage
, verbose
);
698 if (s
->runtime_journal
)
699 do_vacuum(s
, &s
->runtime_storage
, verbose
);
704 static void server_cache_machine_id(Server
*s
) {
710 r
= sd_id128_get_machine(&id
);
714 sd_id128_to_string(id
, stpcpy(s
->machine_id_field
, "_MACHINE_ID="));
717 static void server_cache_boot_id(Server
*s
) {
723 r
= sd_id128_get_boot(&id
);
727 sd_id128_to_string(id
, stpcpy(s
->boot_id_field
, "_BOOT_ID="));
730 static void server_cache_hostname(Server
*s
) {
731 _cleanup_free_
char *t
= NULL
;
736 t
= gethostname_malloc();
740 x
= strjoin("_HOSTNAME=", t
);
744 free(s
->hostname_field
);
745 s
->hostname_field
= x
;
748 static bool shall_try_append_again(JournalFile
*f
, int r
) {
751 case -E2BIG
: /* Hit configured limit */
752 case -EFBIG
: /* Hit fs limit */
753 case -EDQUOT
: /* Quota limit hit */
754 case -ENOSPC
: /* Disk full */
755 log_debug("%s: Allocation limit reached, rotating.", f
->path
);
758 case -EIO
: /* I/O error of some kind (mmap) */
759 log_warning("%s: IO error, rotating.", f
->path
);
762 case -EHOSTDOWN
: /* Other machine */
763 log_info("%s: Journal file from other machine, rotating.", f
->path
);
766 case -EBUSY
: /* Unclean shutdown */
767 log_info("%s: Unclean shutdown, rotating.", f
->path
);
770 case -EPROTONOSUPPORT
: /* Unsupported feature */
771 log_info("%s: Unsupported feature, rotating.", f
->path
);
774 case -EBADMSG
: /* Corrupted */
775 case -ENODATA
: /* Truncated */
776 case -ESHUTDOWN
: /* Already archived */
777 log_warning("%s: Journal file corrupted, rotating.", f
->path
);
780 case -EIDRM
: /* Journal file has been deleted */
781 log_warning("%s: Journal file has been deleted, rotating.", f
->path
);
784 case -ETXTBSY
: /* Journal file is from the future */
785 log_warning("%s: Journal file is from the future, rotating.", f
->path
);
789 log_warning("%s: underlying file system does not support memory mapping or another required file system feature.", f
->path
);
797 static void write_to_journal(Server
*s
, uid_t uid
, struct iovec
*iovec
, size_t n
, int priority
) {
798 bool vacuumed
= false, rotate
= false;
799 struct dual_timestamp ts
;
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);
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. */
819 log_debug("Time jumped backwards, rotating.");
823 f
= find_journal(s
, uid
);
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
);
835 server_vacuum(s
, false);
838 f
= find_journal(s
, uid
);
843 s
->last_realtime_clock
= ts
.realtime
;
845 r
= journal_file_append_entry(f
, &ts
, NULL
, iovec
, n
, &s
->seqnum
, NULL
, NULL
);
847 server_schedule_sync(s
, priority
);
851 if (vacuumed
|| !shall_try_append_again(f
, r
)) {
852 log_error_errno(r
, "Failed to write entry (%zu items, %zu bytes), ignoring: %m", n
, IOVEC_TOTAL_SIZE(iovec
, n
));
857 server_vacuum(s
, false);
859 f
= find_journal(s
, uid
);
863 log_debug("Retrying write.");
864 r
= journal_file_append_entry(f
, &ts
, NULL
, iovec
, n
, &s
->seqnum
, NULL
, NULL
);
866 log_error_errno(r
, "Failed to write entry (%zu items, %zu bytes) despite vacuuming, ignoring: %m", n
, IOVEC_TOTAL_SIZE(iovec
, n
));
868 server_schedule_sync(s
, priority
);
871 #define IOVEC_ADD_NUMERIC_FIELD(iovec, n, value, type, isset, format, field) \
872 if (isset(value)) { \
874 k = newa(char, STRLEN(field "=") + DECIMAL_STR_MAX(type) + 1); \
875 sprintf(k, field "=" format, value); \
876 iovec[n++] = IOVEC_MAKE_STRING(k); \
879 #define IOVEC_ADD_STRING_FIELD(iovec, n, value, field) \
880 if (!isempty(value)) { \
882 k = strjoina(field "=", value); \
883 iovec[n++] = IOVEC_MAKE_STRING(k); \
886 #define IOVEC_ADD_ID128_FIELD(iovec, n, value, field) \
887 if (!sd_id128_is_null(value)) { \
889 k = newa(char, STRLEN(field "=") + SD_ID128_STRING_MAX); \
890 sd_id128_to_string(value, stpcpy(k, field "=")); \
891 iovec[n++] = IOVEC_MAKE_STRING(k); \
894 #define IOVEC_ADD_SIZED_FIELD(iovec, n, value, value_size, field) \
895 if (value_size > 0) { \
897 k = newa(char, STRLEN(field "=") + value_size + 1); \
898 *((char*) mempcpy(stpcpy(k, field "="), value, value_size)) = 0; \
899 iovec[n++] = IOVEC_MAKE_STRING(k); \
902 static void dispatch_message_real(
904 struct iovec
*iovec
, size_t n
, size_t m
,
905 const ClientContext
*c
,
906 const struct timeval
*tv
,
910 char source_time
[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t
)];
911 _cleanup_free_
char *cmdline1
= NULL
, *cmdline2
= NULL
;
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
);
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");
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) */
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
);
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");
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");
941 IOVEC_ADD_STRING_FIELD(iovec
, n
, c
->cgroup
, "_SYSTEMD_CGROUP"); /* A path */
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");
944 IOVEC_ADD_STRING_FIELD(iovec
, n
, c
->unit
, "_SYSTEMD_UNIT"); /* Unit names are bounded by UNIT_NAME_MAX */
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");
949 IOVEC_ADD_ID128_FIELD(iovec
, n
, c
->invocation_id
, "_SYSTEMD_INVOCATION_ID");
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
;
959 if (pid_is_valid(object_pid
) && client_context_get(s
, object_pid
, NULL
, NULL
, 0, NULL
, &o
) >= 0) {
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");
965 /* See above for size limits, only ->cmdline may be large, so use a heap allocation for it. */
966 IOVEC_ADD_STRING_FIELD(iovec
, n
, o
->comm
, "OBJECT_COMM");
967 IOVEC_ADD_STRING_FIELD(iovec
, n
, o
->exe
, "OBJECT_EXE");
969 cmdline2
= set_iovec_string_field(iovec
, &n
, "OBJECT_CMDLINE=", o
->cmdline
);
971 IOVEC_ADD_STRING_FIELD(iovec
, n
, o
->capeff
, "OBJECT_CAP_EFFECTIVE");
972 IOVEC_ADD_SIZED_FIELD(iovec
, n
, o
->label
, o
->label_size
, "OBJECT_SELINUX_CONTEXT");
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");
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");
984 IOVEC_ADD_ID128_FIELD(iovec
, n
, o
->invocation_id
, "OBJECT_SYSTEMD_INVOCATION_ID=");
990 sprintf(source_time
, "_SOURCE_REALTIME_TIMESTAMP=" USEC_FMT
, timeval_load(tv
));
991 iovec
[n
++] = IOVEC_MAKE_STRING(source_time
);
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. */
997 if (!isempty(s
->boot_id_field
))
998 iovec
[n
++] = IOVEC_MAKE_STRING(s
->boot_id_field
);
1000 if (!isempty(s
->machine_id_field
))
1001 iovec
[n
++] = IOVEC_MAKE_STRING(s
->machine_id_field
);
1003 if (!isempty(s
->hostname_field
))
1004 iovec
[n
++] = IOVEC_MAKE_STRING(s
->hostname_field
);
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
))
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
1016 * unprivileged session. */
1017 journal_uid
= c
->owner_uid
;
1021 write_to_journal(s
, journal_uid
, iovec
, n
, priority
);
1024 void server_driver_message(Server
*s
, pid_t object_pid
, const char *message_id
, const char *format
, ...) {
1026 struct iovec
*iovec
;
1034 m
= N_IOVEC_META_FIELDS
+ 5 + N_IOVEC_PAYLOAD_FIELDS
+ client_context_extra_fields_n_iovec(s
->my_context
) + N_IOVEC_OBJECT_FIELDS
;
1035 iovec
= newa(struct iovec
, m
);
1037 assert_cc(3 == LOG_FAC(LOG_DAEMON
));
1038 iovec
[n
++] = IOVEC_MAKE_STRING("SYSLOG_FACILITY=3");
1039 iovec
[n
++] = IOVEC_MAKE_STRING("SYSLOG_IDENTIFIER=systemd-journald");
1041 iovec
[n
++] = IOVEC_MAKE_STRING("_TRANSPORT=driver");
1042 assert_cc(6 == LOG_INFO
);
1043 iovec
[n
++] = IOVEC_MAKE_STRING("PRIORITY=6");
1046 iovec
[n
++] = IOVEC_MAKE_STRING(message_id
);
1049 va_start(ap
, format
);
1050 r
= log_format_iovec(iovec
, m
, &n
, false, 0, format
, ap
);
1051 /* Error handling below */
1055 dispatch_message_real(s
, iovec
, n
, m
, s
->my_context
, NULL
, LOG_INFO
, object_pid
);
1058 free(iovec
[k
++].iov_base
);
1061 /* We failed to format the message. Emit a warning instead. */
1064 xsprintf(buf
, "MESSAGE=Entry printing failed: %s", strerror_safe(r
));
1067 iovec
[n
++] = IOVEC_MAKE_STRING("PRIORITY=4");
1068 iovec
[n
++] = IOVEC_MAKE_STRING(buf
);
1069 dispatch_message_real(s
, iovec
, n
, m
, s
->my_context
, NULL
, LOG_INFO
, object_pid
);
1073 void server_dispatch_message(
1075 struct iovec
*iovec
, size_t n
, size_t m
,
1077 const struct timeval
*tv
,
1081 uint64_t available
= 0;
1085 assert(iovec
|| n
== 0);
1090 if (LOG_PRI(priority
) > s
->max_level_store
)
1093 /* Stop early in case the information will not be stored
1095 if (s
->storage
== STORAGE_NONE
)
1099 (void) determine_space(s
, &available
, NULL
);
1101 rl
= journal_ratelimit_test(s
->ratelimit
, c
->unit
, c
->log_ratelimit_interval
, c
->log_ratelimit_burst
, priority
& LOG_PRIMASK
, available
);
1105 /* Write a suppression message if we suppressed something */
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
),
1110 "N_DROPPED=%i", rl
- 1,
1114 dispatch_message_real(s
, iovec
, n
, m
, c
, tv
, priority
, object_pid
);
1117 int server_flush_to_var(Server
*s
, bool require_flag_file
) {
1119 sd_journal
*j
= NULL
;
1120 char ts
[FORMAT_TIMESPAN_MAX
];
1127 if (!IN_SET(s
->storage
, STORAGE_AUTO
, STORAGE_PERSISTENT
))
1130 if (!s
->runtime_journal
)
1133 if (require_flag_file
&& !flushed_flag_is_set())
1136 (void) system_journal_open(s
, true, false);
1138 if (!s
->system_journal
)
1141 log_debug("Flushing to /var...");
1143 start
= now(CLOCK_MONOTONIC
);
1145 r
= sd_id128_get_machine(&machine
);
1149 r
= sd_journal_open(&j
, SD_JOURNAL_RUNTIME_ONLY
);
1151 return log_error_errno(r
, "Failed to read runtime journal: %m");
1153 sd_journal_set_data_threshold(j
, 0);
1155 SD_JOURNAL_FOREACH(j
) {
1159 f
= j
->current_file
;
1160 assert(f
&& f
->current_offset
> 0);
1164 r
= journal_file_move_to_object(f
, OBJECT_ENTRY
, f
->current_offset
, &o
);
1166 log_error_errno(r
, "Can't read entry: %m");
1170 r
= journal_file_copy_entry(f
, s
->system_journal
, o
, f
->current_offset
);
1174 if (!shall_try_append_again(s
->system_journal
, r
)) {
1175 log_error_errno(r
, "Can't write entry: %m");
1180 server_vacuum(s
, false);
1182 if (!s
->system_journal
) {
1183 log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful.");
1188 log_debug("Retrying write.");
1189 r
= journal_file_copy_entry(f
, s
->system_journal
, o
, f
->current_offset
);
1191 log_error_errno(r
, "Can't write entry: %m");
1199 if (s
->system_journal
)
1200 journal_file_post_change(s
->system_journal
);
1202 s
->runtime_journal
= journal_file_close(s
->runtime_journal
);
1205 (void) rm_rf("/run/log/journal", REMOVE_ROOT
);
1207 sd_journal_close(j
);
1209 server_driver_message(s
, 0, NULL
,
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),
1215 k
= touch("/run/systemd/journal/flushed");
1217 log_warning_errno(k
, "Failed to touch /run/systemd/journal/flushed, ignoring: %m");
1222 static int server_relinquish_var(Server
*s
) {
1225 if (s
->storage
== STORAGE_NONE
)
1228 if (s
->runtime_journal
&& !s
->system_journal
)
1231 log_debug("Relinquishing /var...");
1233 (void) system_journal_open(s
, false, true);
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
);
1239 if (unlink("/run/systemd/journal/flushed") < 0 && errno
!= ENOENT
)
1240 log_warning_errno(errno
, "Failed to unlink /run/systemd/journal/flushed, ignoring: %m");
1245 int server_process_datagram(sd_event_source
*es
, int fd
, uint32_t revents
, void *userdata
) {
1246 Server
*s
= userdata
;
1247 struct ucred
*ucred
= NULL
;
1248 struct timeval
*tv
= NULL
;
1249 struct cmsghdr
*cmsg
;
1251 size_t label_len
= 0, m
;
1254 int *fds
= NULL
, v
= 0;
1258 struct cmsghdr cmsghdr
;
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 */
1273 union sockaddr_union sa
= {};
1275 struct msghdr msghdr
= {
1278 .msg_control
= &control
,
1279 .msg_controllen
= sizeof(control
),
1281 .msg_namelen
= sizeof(sa
),
1285 assert(fd
== s
->native_fd
|| fd
== s
->syslog_fd
|| fd
== s
->audit_fd
);
1287 if (revents
!= EPOLLIN
)
1288 return log_error_errno(SYNTHETIC_ERRNO(EIO
),
1289 "Got invalid event from epoll for datagram fd: %" PRIx32
,
1292 /* Try to get the right size, if we can. (Not all sockets support SIOCINQ, hence we just try, but don't rely on
1294 (void) ioctl(fd
, SIOCINQ
, &v
);
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,
1299 ALIGN(sizeof(struct nlmsghdr
)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH
)) + 1);
1301 if (!GREEDY_REALLOC(s
->buffer
, s
->buffer_size
, m
))
1304 iovec
= IOVEC_MAKE(s
->buffer
, s
->buffer_size
- 1); /* Leave room for trailing NUL we add later */
1306 n
= recvmsg(fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
);
1308 if (IN_SET(errno
, EINTR
, EAGAIN
))
1311 return log_error_errno(errno
, "recvmsg() failed: %m");
1314 CMSG_FOREACH(cmsg
, &msghdr
)
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);
1333 /* And a trailing NUL, just in case */
1336 if (fd
== s
->syslog_fd
) {
1337 if (n
> 0 && n_fds
== 0)
1338 server_process_syslog_message(s
, s
->buffer
, n
, ucred
, tv
, label
, label_len
);
1340 log_warning("Got file descriptors via syslog socket. Ignoring.");
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
);
1348 log_warning("Got too many file descriptors via native socket. Ignoring.");
1351 assert(fd
== s
->audit_fd
);
1353 if (n
> 0 && n_fds
== 0)
1354 server_process_audit_message(s
, s
->buffer
, n
, ucred
, &sa
, msghdr
.msg_namelen
);
1356 log_warning("Got file descriptors via audit socket. Ignoring.");
1359 close_many(fds
, n_fds
);
1363 static void server_full_flush(Server
*s
) {
1366 (void) server_flush_to_var(s
, false);
1368 server_vacuum(s
, false);
1370 server_space_usage_message(s
, NULL
);
1373 static int dispatch_sigusr1(sd_event_source
*es
, const struct signalfd_siginfo
*si
, void *userdata
) {
1374 Server
*s
= userdata
;
1378 log_info("Received SIGUSR1 signal from PID " PID_FMT
", as request to flush runtime journal.", si
->ssi_pid
);
1379 server_full_flush(s
);
1384 static void server_full_rotate(Server
*s
) {
1390 server_vacuum(s
, true);
1392 if (s
->system_journal
)
1393 patch_min_use(&s
->system_storage
);
1394 if (s
->runtime_journal
)
1395 patch_min_use(&s
->runtime_storage
);
1397 /* Let clients know when the most recent rotation happened. */
1398 r
= write_timestamp_file_atomic("/run/systemd/journal/rotated", now(CLOCK_MONOTONIC
));
1400 log_warning_errno(r
, "Failed to write /run/systemd/journal/rotated, ignoring: %m");
1403 static int dispatch_sigusr2(sd_event_source
*es
, const struct signalfd_siginfo
*si
, void *userdata
) {
1404 Server
*s
= userdata
;
1408 log_info("Received SIGUSR2 signal from PID " PID_FMT
", as request to rotate journal.", si
->ssi_pid
);
1409 server_full_rotate(s
);
1414 static int dispatch_sigterm(sd_event_source
*es
, const struct signalfd_siginfo
*si
, void *userdata
) {
1415 Server
*s
= userdata
;
1419 log_received_signal(LOG_INFO
, si
);
1421 sd_event_exit(s
->event
, 0);
1425 static void server_full_sync(Server
*s
) {
1432 /* Let clients know when the most recent sync happened. */
1433 r
= write_timestamp_file_atomic("/run/systemd/journal/synced", now(CLOCK_MONOTONIC
));
1435 log_warning_errno(r
, "Failed to write /run/systemd/journal/synced, ignoring: %m");
1440 static int dispatch_sigrtmin1(sd_event_source
*es
, const struct signalfd_siginfo
*si
, void *userdata
) {
1441 Server
*s
= userdata
;
1445 log_debug("Received SIGRTMIN1 signal from PID " PID_FMT
", as request to sync.", si
->ssi_pid
);
1446 server_full_sync(s
);
1451 static int setup_signals(Server
*s
) {
1456 assert_se(sigprocmask_many(SIG_SETMASK
, NULL
, SIGINT
, SIGTERM
, SIGUSR1
, SIGUSR2
, SIGRTMIN
+1, -1) >= 0);
1458 r
= sd_event_add_signal(s
->event
, &s
->sigusr1_event_source
, SIGUSR1
, dispatch_sigusr1
, s
);
1462 r
= sd_event_add_signal(s
->event
, &s
->sigusr2_event_source
, SIGUSR2
, dispatch_sigusr2
, s
);
1466 r
= sd_event_add_signal(s
->event
, &s
->sigterm_event_source
, SIGTERM
, dispatch_sigterm
, s
);
1470 /* Let's process SIGTERM late, so that we flush all queued messages to disk before we exit */
1471 r
= sd_event_source_set_priority(s
->sigterm_event_source
, SD_EVENT_PRIORITY_NORMAL
+20);
1475 /* When journald is invoked on the terminal (when debugging), it's useful if C-c is handled
1476 * equivalent to SIGTERM. */
1477 r
= sd_event_add_signal(s
->event
, &s
->sigint_event_source
, SIGINT
, dispatch_sigterm
, s
);
1481 r
= sd_event_source_set_priority(s
->sigint_event_source
, SD_EVENT_PRIORITY_NORMAL
+20);
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. */
1488 r
= sd_event_add_signal(s
->event
, &s
->sigrtmin1_event_source
, SIGRTMIN
+1, dispatch_sigrtmin1
, s
);
1492 r
= sd_event_source_set_priority(s
->sigrtmin1_event_source
, SD_EVENT_PRIORITY_NORMAL
+15);
1499 static int parse_proc_cmdline_item(const char *key
, const char *value
, void *data
) {
1505 if (proc_cmdline_key_streq(key
, "systemd.journald.forward_to_syslog")) {
1507 r
= value
? parse_boolean(value
) : true;
1509 log_warning("Failed to parse forward to syslog switch \"%s\". Ignoring.", value
);
1511 s
->forward_to_syslog
= r
;
1513 } else if (proc_cmdline_key_streq(key
, "systemd.journald.forward_to_kmsg")) {
1515 r
= value
? parse_boolean(value
) : true;
1517 log_warning("Failed to parse forward to kmsg switch \"%s\". Ignoring.", value
);
1519 s
->forward_to_kmsg
= r
;
1521 } else if (proc_cmdline_key_streq(key
, "systemd.journald.forward_to_console")) {
1523 r
= value
? parse_boolean(value
) : true;
1525 log_warning("Failed to parse forward to console switch \"%s\". Ignoring.", value
);
1527 s
->forward_to_console
= r
;
1529 } else if (proc_cmdline_key_streq(key
, "systemd.journald.forward_to_wall")) {
1531 r
= value
? parse_boolean(value
) : true;
1533 log_warning("Failed to parse forward to wall switch \"%s\". Ignoring.", value
);
1535 s
->forward_to_wall
= r
;
1537 } else if (proc_cmdline_key_streq(key
, "systemd.journald.max_level_console")) {
1539 if (proc_cmdline_value_missing(key
, value
))
1542 r
= log_level_from_string(value
);
1544 log_warning("Failed to parse max level console value \"%s\". Ignoring.", value
);
1546 s
->max_level_console
= r
;
1548 } else if (proc_cmdline_key_streq(key
, "systemd.journald.max_level_store")) {
1550 if (proc_cmdline_value_missing(key
, value
))
1553 r
= log_level_from_string(value
);
1555 log_warning("Failed to parse max level store value \"%s\". Ignoring.", value
);
1557 s
->max_level_store
= r
;
1559 } else if (proc_cmdline_key_streq(key
, "systemd.journald.max_level_syslog")) {
1561 if (proc_cmdline_value_missing(key
, value
))
1564 r
= log_level_from_string(value
);
1566 log_warning("Failed to parse max level syslog value \"%s\". Ignoring.", value
);
1568 s
->max_level_syslog
= r
;
1570 } else if (proc_cmdline_key_streq(key
, "systemd.journald.max_level_kmsg")) {
1572 if (proc_cmdline_value_missing(key
, value
))
1575 r
= log_level_from_string(value
);
1577 log_warning("Failed to parse max level kmsg value \"%s\". Ignoring.", value
);
1579 s
->max_level_kmsg
= r
;
1581 } else if (proc_cmdline_key_streq(key
, "systemd.journald.max_level_wall")) {
1583 if (proc_cmdline_value_missing(key
, value
))
1586 r
= log_level_from_string(value
);
1588 log_warning("Failed to parse max level wall value \"%s\". Ignoring.", value
);
1590 s
->max_level_wall
= r
;
1592 } else if (startswith(key
, "systemd.journald"))
1593 log_warning("Unknown journald kernel command line option \"%s\". Ignoring.", key
);
1595 /* do not warn about state here, since probably systemd already did */
1599 static int server_parse_config_file(Server
*s
) {
1602 return config_parse_many_nulstr(PKGSYSCONFDIR
"/journald.conf",
1603 CONF_PATHS_NULSTR("systemd/journald.conf.d"),
1605 config_item_perf_lookup
, journald_gperf_lookup
,
1606 CONFIG_PARSE_WARN
, s
);
1609 static int server_dispatch_sync(sd_event_source
*es
, usec_t t
, void *userdata
) {
1610 Server
*s
= userdata
;
1618 int server_schedule_sync(Server
*s
, int priority
) {
1623 if (priority
<= LOG_CRIT
) {
1624 /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */
1629 if (s
->sync_scheduled
)
1632 if (s
->sync_interval_usec
> 0) {
1635 r
= sd_event_now(s
->event
, CLOCK_MONOTONIC
, &when
);
1639 when
+= s
->sync_interval_usec
;
1641 if (!s
->sync_event_source
) {
1642 r
= sd_event_add_time(
1644 &s
->sync_event_source
,
1647 server_dispatch_sync
, s
);
1651 r
= sd_event_source_set_priority(s
->sync_event_source
, SD_EVENT_PRIORITY_IMPORTANT
);
1653 r
= sd_event_source_set_time(s
->sync_event_source
, when
);
1657 r
= sd_event_source_set_enabled(s
->sync_event_source
, SD_EVENT_ONESHOT
);
1662 s
->sync_scheduled
= true;
1668 static int dispatch_hostname_change(sd_event_source
*es
, int fd
, uint32_t revents
, void *userdata
) {
1669 Server
*s
= userdata
;
1673 server_cache_hostname(s
);
1677 static int server_open_hostname(Server
*s
) {
1682 s
->hostname_fd
= open("/proc/sys/kernel/hostname",
1683 O_RDONLY
|O_CLOEXEC
|O_NONBLOCK
|O_NOCTTY
);
1684 if (s
->hostname_fd
< 0)
1685 return log_error_errno(errno
, "Failed to open /proc/sys/kernel/hostname: %m");
1687 r
= sd_event_add_io(s
->event
, &s
->hostname_event_source
, s
->hostname_fd
, 0, dispatch_hostname_change
, s
);
1689 /* kernels prior to 3.2 don't support polling this file. Ignore
1692 log_warning_errno(r
, "Failed to register hostname fd in event loop, ignoring: %m");
1693 s
->hostname_fd
= safe_close(s
->hostname_fd
);
1697 return log_error_errno(r
, "Failed to register hostname fd in event loop: %m");
1700 r
= sd_event_source_set_priority(s
->hostname_event_source
, SD_EVENT_PRIORITY_IMPORTANT
-10);
1702 return log_error_errno(r
, "Failed to adjust priority of host name event source: %m");
1707 static int dispatch_notify_event(sd_event_source
*es
, int fd
, uint32_t revents
, void *userdata
) {
1708 Server
*s
= userdata
;
1712 assert(s
->notify_event_source
== es
);
1713 assert(s
->notify_fd
== fd
);
1715 /* The $NOTIFY_SOCKET is writable again, now send exactly one
1716 * message on it. Either it's the watchdog event, the initial
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. */
1721 if (!s
->sent_notify_ready
) {
1722 static const char p
[] =
1724 "STATUS=Processing requests...";
1727 l
= send(s
->notify_fd
, p
, strlen(p
), MSG_DONTWAIT
);
1729 if (errno
== EAGAIN
)
1732 return log_error_errno(errno
, "Failed to send READY=1 notification message: %m");
1735 s
->sent_notify_ready
= true;
1736 log_debug("Sent READY=1 notification.");
1738 } else if (s
->send_watchdog
) {
1740 static const char p
[] =
1745 l
= send(s
->notify_fd
, p
, strlen(p
), MSG_DONTWAIT
);
1747 if (errno
== EAGAIN
)
1750 return log_error_errno(errno
, "Failed to send WATCHDOG=1 notification message: %m");
1753 s
->send_watchdog
= false;
1754 log_debug("Sent WATCHDOG=1 notification.");
1756 } else if (s
->stdout_streams_notify_queue
)
1757 /* Dispatch one stream notification event */
1758 stdout_stream_send_notify(s
->stdout_streams_notify_queue
);
1760 /* Leave us enabled if there's still more to do. */
1761 if (s
->send_watchdog
|| s
->stdout_streams_notify_queue
)
1764 /* There was nothing to do anymore, let's turn ourselves off. */
1765 r
= sd_event_source_set_enabled(es
, SD_EVENT_OFF
);
1767 return log_error_errno(r
, "Failed to turn off notify event source: %m");
1772 static int dispatch_watchdog(sd_event_source
*es
, uint64_t usec
, void *userdata
) {
1773 Server
*s
= userdata
;
1778 s
->send_watchdog
= true;
1780 r
= sd_event_source_set_enabled(s
->notify_event_source
, SD_EVENT_ON
);
1782 log_warning_errno(r
, "Failed to turn on notify event source: %m");
1784 r
= sd_event_source_set_time(s
->watchdog_event_source
, usec
+ s
->watchdog_usec
/ 2);
1786 return log_error_errno(r
, "Failed to restart watchdog event source: %m");
1788 r
= sd_event_source_set_enabled(s
->watchdog_event_source
, SD_EVENT_ON
);
1790 return log_error_errno(r
, "Failed to enable watchdog event source: %m");
1795 static int server_connect_notify(Server
*s
) {
1796 union sockaddr_union sa
= {};
1801 assert(s
->notify_fd
< 0);
1802 assert(!s
->notify_event_source
);
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.
1814 * Don't think that this issue is real? It is, see: https://github.com/systemd/systemd/issues/1505
1817 e
= getenv("NOTIFY_SOCKET");
1821 salen
= sockaddr_un_set_path(&sa
.un
, e
);
1823 return log_error_errno(salen
, "NOTIFY_SOCKET set to invalid value '%s': %m", e
);
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");
1829 (void) fd_inc_sndbuf(s
->notify_fd
, NOTIFY_SNDBUF_SIZE
);
1831 r
= connect(s
->notify_fd
, &sa
.sa
, salen
);
1833 return log_error_errno(errno
, "Failed to connect to notify socket: %m");
1835 r
= sd_event_add_io(s
->event
, &s
->notify_event_source
, s
->notify_fd
, EPOLLOUT
, dispatch_notify_event
, s
);
1837 return log_error_errno(r
, "Failed to watch notification socket: %m");
1839 if (sd_watchdog_enabled(false, &s
->watchdog_usec
) > 0) {
1840 s
->send_watchdog
= true;
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
);
1844 return log_error_errno(r
, "Failed to add watchdog time event: %m");
1847 /* This should fire pretty soon, which we'll use to send the READY=1 event. */
1852 static int synchronize_second_half(sd_event_source
*event_source
, void *userdata
) {
1853 Varlink
*link
= userdata
;
1858 assert_se(s
= varlink_get_userdata(link
));
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
);
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);
1870 return log_error_errno(r
, "Failed to mark event source as non-floating: %m");
1872 return varlink_reply(link
, NULL
);
1875 static void synchronize_destroy(void *userdata
) {
1876 varlink_unref(userdata
);
1879 static int vl_method_synchronize(Varlink
*link
, JsonVariant
*parameters
, VarlinkMethodFlags flags
, void *userdata
) {
1880 _cleanup_(sd_event_source_unrefp
) sd_event_source
*event_source
= NULL
;
1881 Server
*s
= userdata
;
1887 if (json_variant_elements(parameters
) > 0)
1888 return varlink_error_invalid_parameter(link
, parameters
);
1890 log_info("Received client request to rotate journal.");
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
);
1898 return log_error_errno(r
, "Failed to allocate defer event source: %m");
1900 r
= sd_event_source_set_destroy_callback(event_source
, synchronize_destroy
);
1902 return log_error_errno(r
, "Failed to set event source destroy callback: %m");
1904 varlink_ref(link
); /* The varlink object is now left to the destroy callack to unref */
1906 r
= sd_event_source_set_priority(event_source
, SD_EVENT_PRIORITY_NORMAL
+15);
1908 return log_error_errno(r
, "Failed to set defer event source priority: %m");
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);
1914 return log_error_errno(r
, "Failed to mark event source as floating: %m");
1916 (void) sd_event_source_set_description(event_source
, "deferred-sync");
1921 static int vl_method_rotate(Varlink
*link
, JsonVariant
*parameters
, VarlinkMethodFlags flags
, void *userdata
) {
1922 Server
*s
= userdata
;
1927 if (json_variant_elements(parameters
) > 0)
1928 return varlink_error_invalid_parameter(link
, parameters
);
1930 log_info("Received client request to rotate journal.");
1931 server_full_rotate(s
);
1933 return varlink_reply(link
, NULL
);
1936 static int vl_method_flush_to_var(Varlink
*link
, JsonVariant
*parameters
, VarlinkMethodFlags flags
, void *userdata
) {
1937 Server
*s
= userdata
;
1942 if (json_variant_elements(parameters
) > 0)
1943 return varlink_error_invalid_parameter(link
, parameters
);
1945 log_info("Received client request to flush runtime journal.");
1946 server_full_flush(s
);
1948 return varlink_reply(link
, NULL
);
1951 static int vl_method_relinquish_var(Varlink
*link
, JsonVariant
*parameters
, VarlinkMethodFlags flags
, void *userdata
) {
1952 Server
*s
= userdata
;
1957 if (json_variant_elements(parameters
) > 0)
1958 return varlink_error_invalid_parameter(link
, parameters
);
1960 log_info("Received client request to relinquish /var access.");
1961 server_relinquish_var(s
);
1963 return varlink_reply(link
, NULL
);
1966 static int server_open_varlink(Server
*s
) {
1971 r
= varlink_server_new(&s
->varlink_server
, VARLINK_SERVER_ROOT_ONLY
);
1975 varlink_server_set_userdata(s
->varlink_server
, s
);
1977 r
= varlink_server_bind_method_many(
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
);
1986 r
= varlink_server_listen_address(s
->varlink_server
, "/run/systemd/journal/io.systemd.journal", 0600);
1990 r
= varlink_server_attach_event(s
->varlink_server
, s
->event
, SD_EVENT_PRIORITY_NORMAL
);
1997 int server_init(Server
*s
) {
1998 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2013 .compress
.enabled
= true,
2014 .compress
.threshold_bytes
= (uint64_t) -1,
2018 .watchdog_usec
= USEC_INFINITY
,
2020 .sync_interval_usec
= DEFAULT_SYNC_INTERVAL_USEC
,
2021 .sync_scheduled
= false,
2023 .ratelimit_interval
= DEFAULT_RATE_LIMIT_INTERVAL
,
2024 .ratelimit_burst
= DEFAULT_RATE_LIMIT_BURST
,
2026 .forward_to_wall
= true,
2028 .max_file_usec
= DEFAULT_MAX_FILE_USEC
,
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
,
2036 .line_max
= DEFAULT_LINE_MAX
,
2038 .runtime_storage
.name
= "Runtime Journal",
2039 .system_storage
.name
= "System Journal",
2042 journal_reset_metrics(&s
->system_storage
.metrics
);
2043 journal_reset_metrics(&s
->runtime_storage
.metrics
);
2045 server_parse_config_file(s
);
2047 r
= proc_cmdline_parse(parse_proc_cmdline_item
, s
, PROC_CMDLINE_STRIP_RD_PREFIX
);
2049 log_warning_errno(r
, "Failed to parse kernel command line, ignoring: %m");
2051 if (!!s
->ratelimit_interval
^ !!s
->ratelimit_burst
) {
2052 log_debug("Setting both rate limit interval and burst from "USEC_FMT
",%u to 0,0",
2053 s
->ratelimit_interval
, s
->ratelimit_burst
);
2054 s
->ratelimit_interval
= s
->ratelimit_burst
= 0;
2057 (void) mkdir_p("/run/systemd/journal", 0755);
2059 s
->user_journals
= ordered_hashmap_new(NULL
);
2060 if (!s
->user_journals
)
2063 s
->mmap
= mmap_cache_new();
2067 s
->deferred_closes
= set_new(NULL
);
2068 if (!s
->deferred_closes
)
2071 r
= sd_event_default(&s
->event
);
2073 return log_error_errno(r
, "Failed to create event loop: %m");
2075 n
= sd_listen_fds(true);
2077 return log_error_errno(n
, "Failed to read listening file descriptors from environment: %m");
2079 for (fd
= SD_LISTEN_FDS_START
; fd
< SD_LISTEN_FDS_START
+ n
; fd
++) {
2081 if (sd_is_socket_unix(fd
, SOCK_DGRAM
, -1, "/run/systemd/journal/socket", 0) > 0) {
2083 if (s
->native_fd
>= 0)
2084 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
),
2085 "Too many native sockets passed.");
2089 } else if (sd_is_socket_unix(fd
, SOCK_STREAM
, 1, "/run/systemd/journal/stdout", 0) > 0) {
2091 if (s
->stdout_fd
>= 0)
2092 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
),
2093 "Too many stdout sockets passed.");
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) {
2100 if (s
->syslog_fd
>= 0)
2101 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
),
2102 "Too many /dev/log sockets passed.");
2106 } else if (sd_is_socket(fd
, AF_NETLINK
, SOCK_RAW
, -1) > 0) {
2108 if (s
->audit_fd
>= 0)
2109 return log_error_errno(SYNTHETIC_ERRNO(EINVAL
),
2110 "Too many audit sockets passed.");
2122 r
= fdset_put(fds
, fd
);
2128 /* Try to restore streams, but don't bother if this fails */
2129 (void) server_restore_streams(s
, fds
);
2131 if (fdset_size(fds
) > 0) {
2132 log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds
));
2133 fds
= fdset_free(fds
);
2136 no_sockets
= s
->native_fd
< 0 && s
->stdout_fd
< 0 && s
->syslog_fd
< 0 && s
->audit_fd
< 0;
2138 /* always open stdout, syslog, native, and kmsg sockets */
2140 /* systemd-journald.socket: /run/systemd/journal/stdout */
2141 r
= server_open_stdout_socket(s
);
2145 /* systemd-journald-dev-log.socket: /run/systemd/journal/dev-log */
2146 r
= server_open_syslog_socket(s
);
2150 /* systemd-journald.socket: /run/systemd/journal/socket */
2151 r
= server_open_native_socket(s
);
2156 r
= server_open_dev_kmsg(s
);
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
);
2167 r
= server_open_varlink(s
);
2171 r
= server_open_kernel_seqnum(s
);
2175 r
= server_open_hostname(s
);
2179 r
= setup_signals(s
);
2183 s
->ratelimit
= journal_ratelimit_new();
2187 r
= cg_get_root_path(&s
->cgroup_root
);
2191 server_cache_hostname(s
);
2192 server_cache_boot_id(s
);
2193 server_cache_machine_id(s
);
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
));
2197 if (!s
->runtime_storage
.path
|| !s
->system_storage
.path
)
2200 (void) server_connect_notify(s
);
2202 (void) client_context_acquire_default(s
);
2204 return system_journal_open(s
, false, false);
2207 void server_maybe_append_tags(Server
*s
) {
2213 n
= now(CLOCK_REALTIME
);
2215 if (s
->system_journal
)
2216 journal_file_maybe_append_tag(s
->system_journal
, n
);
2218 ORDERED_HASHMAP_FOREACH(f
, s
->user_journals
, i
)
2219 journal_file_maybe_append_tag(f
, n
);
2223 void server_done(Server
*s
) {
2226 set_free_with_destructor(s
->deferred_closes
, journal_file_close
);
2228 while (s
->stdout_streams
)
2229 stdout_stream_free(s
->stdout_streams
);
2231 client_context_flush_all(s
);
2233 (void) journal_file_close(s
->system_journal
);
2234 (void) journal_file_close(s
->runtime_journal
);
2236 ordered_hashmap_free_with_destructor(s
->user_journals
, journal_file_close
);
2238 varlink_server_unref(s
->varlink_server
);
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
);
2244 sd_event_source_unref(s
->audit_event_source
);
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
);
2250 sd_event_source_unref(s
->sigrtmin1_event_source
);
2251 sd_event_source_unref(s
->hostname_event_source
);
2252 sd_event_source_unref(s
->notify_event_source
);
2253 sd_event_source_unref(s
->watchdog_event_source
);
2254 sd_event_unref(s
->event
);
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
);
2260 safe_close(s
->audit_fd
);
2261 safe_close(s
->hostname_fd
);
2262 safe_close(s
->notify_fd
);
2265 journal_ratelimit_free(s
->ratelimit
);
2267 if (s
->kernel_seqnum
)
2268 munmap(s
->kernel_seqnum
, sizeof(uint64_t));
2272 free(s
->cgroup_root
);
2273 free(s
->hostname_field
);
2274 free(s
->runtime_storage
.path
);
2275 free(s
->system_storage
.path
);
2277 mmap_cache_unref(s
->mmap
);
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"
2287 DEFINE_STRING_TABLE_LOOKUP(storage
, Storage
);
2288 DEFINE_CONFIG_PARSE_ENUM(config_parse_storage
, storage
, Storage
, "Failed to parse storage setting");
2290 static const char* const split_mode_table
[_SPLIT_MAX
] = {
2291 [SPLIT_LOGIN
] = "login",
2292 [SPLIT_UID
] = "uid",
2293 [SPLIT_NONE
] = "none",
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");
2299 int config_parse_line_max(
2301 const char *filename
,
2303 const char *section
,
2304 unsigned section_line
,
2319 if (isempty(rvalue
))
2320 /* Empty assignment means default */
2321 *sz
= DEFAULT_LINE_MAX
;
2325 r
= parse_size(rvalue
, 1024, &v
);
2327 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Failed to parse LineMax= value, ignoring: %s", rvalue
);
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
);
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
);
2351 int config_parse_compress(
2353 const char *filename
,
2355 const char *section
,
2356 unsigned section_line
,
2363 JournalCompressOptions
* compress
= data
;
2366 if (isempty(rvalue
)) {
2367 compress
->enabled
= true;
2368 compress
->threshold_bytes
= (uint64_t) -1;
2369 } else if (streq(rvalue
, "1")) {
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;
2378 r
= parse_boolean(rvalue
);
2380 r
= parse_size(rvalue
, 1024, &compress
->threshold_bytes
);
2382 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
2383 "Failed to parse Compress= value, ignoring: %s", rvalue
);
2385 compress
->enabled
= true;
2387 compress
->enabled
= r
;