]> git.ipfire.org Git - thirdparty/systemd.git/blame - src/journal/journald.c
projects / thirdparty / systemd.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
rename /etc/systemd/systemd-{login,journal}d.conf to {login,journal}d.conf
[thirdparty/systemd.git] / src / journal / journald.c
CommitLineData
87d2c1ff
LP		 1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3/***
4 This file is part of systemd.
5
6 Copyright 2011 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
22#include <sys/epoll.h>
23#include <sys/socket.h>
24#include <errno.h>
25#include <sys/signalfd.h>
26#include <unistd.h>
27#include <fcntl.h>
7f3e6257
LP		 28#include <stddef.h>
29#include <sys/ioctl.h>
30#include <linux/sockios.h>
6e409ce1 31#include <sys/statvfs.h>
87d2c1ff 32
81527be1
LP		 33#include <systemd/sd-journal.h>
34#include <systemd/sd-login.h>
35#include <systemd/sd-messages.h>
36#include <systemd/sd-daemon.h>
37
87d2c1ff 38#include "hashmap.h"
cec736d2 39#include "journal-file.h"
87d2c1ff 40#include "socket-util.h"
69e5d42d 41#include "cgroup-util.h"
fe652127 42#include "list.h"
6e409ce1 43#include "journal-rate-limit.h"
cf244689 44#include "journal-internal.h"
e6960940
LP		 45#include "conf-parser.h"
46#include "journald.h"
effb1102 47#include "virt.h"
7f2c63cb 48#include "missing.h"
87d2c1ff 49
e6520a0f
LP		 50#ifdef HAVE_ACL
51#include <sys/acl.h>
52#include <acl/libacl.h>
53#include "acl-util.h"
54#endif
55
8a0f04e6
LP		 56#ifdef HAVE_SELINUX
57#include <selinux/selinux.h>
58#endif
59
cab8ac60 60#define USER_JOURNALS_MAX 1024
fe652127
LP		 61#define STDOUT_STREAMS_MAX 4096
62
de97b26a
LP		 63#define DEFAULT_RATE_LIMIT_INTERVAL (10*USEC_PER_SEC)
64#define DEFAULT_RATE_LIMIT_BURST 200
65
9cfb57c9
LP		 66#define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC)
67
54a7b863
LP		 68#define RECHECK_VAR_AVAILABLE_USEC (30*USEC_PER_SEC)
69
8a0f04e6 70#define N_IOVEC_META_FIELDS 17
224f2ee2 71
0dad12c1
LP		 72#define ENTRY_SIZE_MAX (1024*1024*32)
73
fe652127 74typedef enum StdoutStreamState {
4cd9a9d9 75 STDOUT_STREAM_IDENTIFIER,
fe652127 76 STDOUT_STREAM_PRIORITY,
258cdffc 77 STDOUT_STREAM_LEVEL_PREFIX,
224f2ee2
LP		 78 STDOUT_STREAM_FORWARD_TO_SYSLOG,
79 STDOUT_STREAM_FORWARD_TO_KMSG,
80 STDOUT_STREAM_FORWARD_TO_CONSOLE,
fe652127
LP		 81 STDOUT_STREAM_RUNNING
82} StdoutStreamState;
83
84struct StdoutStream {
85 Server *server;
86 StdoutStreamState state;
87
88 int fd;
89
90 struct ucred ucred;
7f2c63cb
LP		 91#ifdef HAVE_SELINUX
92 security_context_t security_context;
93#endif
fe652127 94
4cd9a9d9 95 char *identifier;
fe652127 96 int priority;
258cdffc 97 bool level_prefix:1;
224f2ee2
LP		 98 bool forward_to_syslog:1;
99 bool forward_to_kmsg:1;
100 bool forward_to_console:1;
fe652127
LP		 101
102 char buffer[LINE_MAX+1];
103 size_t length;
104
105 LIST_FIELDS(StdoutStream, stdout_stream);
106};
107
cf244689
LP		 108static int server_flush_to_var(Server *s);
109
6e409ce1 110static uint64_t available_space(Server *s) {
babfc091 111 char ids[33], *p;
6e409ce1 112 const char *f;
babfc091 113 sd_id128_t machine;
6e409ce1
LP		 114 struct statvfs ss;
115 uint64_t sum = 0, avail = 0, ss_avail = 0;
116 int r;
117 DIR *d;
babfc091
LP		 118 usec_t ts;
119 JournalMetrics *m;
120
121 ts = now(CLOCK_MONOTONIC);
9cfb57c9
LP		 122
123 if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts)
124 return s->cached_available_space;
6e409ce1
LP		 125
126 r = sd_id128_get_machine(&machine);
127 if (r < 0)
128 return 0;
129
babfc091 130 if (s->system_journal) {
6e409ce1 131 f = "/var/log/journal/";
babfc091
LP		 132 m = &s->system_metrics;
133 } else {
6e409ce1 134 f = "/run/log/journal/";
babfc091
LP		 135 m = &s->runtime_metrics;
136 }
137
138 assert(m);
6e409ce1
LP		 139
140 p = strappend(f, sd_id128_to_string(machine, ids));
141 if (!p)
142 return 0;
143
144 d = opendir(p);
145 free(p);
146
147 if (!d)
148 return 0;
149
150 if (fstatvfs(dirfd(d), &ss) < 0)
151 goto finish;
152
153 for (;;) {
154 struct stat st;
155 struct dirent buf, *de;
6e409ce1 156
34a35ece
LP		 157 r = readdir_r(d, &buf, &de);
158 if (r != 0)
159 break;
6e409ce1
LP		 160
161 if (!de)
162 break;
163
c0421793
LP		 164 if (!endswith(de->d_name, ".journal") &&
165 !endswith(de->d_name, ".journal~"))
6e409ce1
LP		 166 continue;
167
168 if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
169 continue;
170
a3a52c0f
LP		 171 if (!S_ISREG(st.st_mode))
172 continue;
173
174 sum += (uint64_t) st.st_blocks * 512UL;
6e409ce1
LP		 175 }
176
babfc091 177 avail = sum >= m->max_use ? 0 : m->max_use - sum;
6e409ce1
LP		 178
179 ss_avail = ss.f_bsize * ss.f_bavail;
180
babfc091 181 ss_avail = ss_avail < m->keep_free ? 0 : ss_avail - m->keep_free;
6e409ce1
LP		 182
183 if (ss_avail < avail)
184 avail = ss_avail;
185
9cfb57c9
LP		 186 s->cached_available_space = avail;
187 s->cached_available_space_timestamp = ts;
188
6e409ce1
LP		 189finish:
190 closedir(d);
191
192 return avail;
193}
194
5e41cfec
LP		 195static void server_read_file_gid(Server *s) {
196 const char *adm = "adm";
197 int r;
198
199 assert(s);
200
201 if (s->file_gid_valid)
202 return;
203
204 r = get_group_creds(&adm, &s->file_gid);
205 if (r < 0)
206 log_warning("Failed to resolve 'adm' group: %s", strerror(-r));
207
208 /* if we couldn't read the gid, then it will be 0, but that's
209 * fine and we shouldn't try to resolve the group again, so
210 * let's just pretend it worked right-away. */
211 s->file_gid_valid = true;
212}
213
214static void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
e6520a0f
LP		 215 int r;
216#ifdef HAVE_ACL
f4b47811
LP		 217 acl_t acl;
218 acl_entry_t entry;
219 acl_permset_t permset;
e6520a0f 220#endif
f4b47811
LP		 221
222 assert(f);
223
5e41cfec
LP		 224 server_read_file_gid(s);
225
226 r = fchmod_and_fchown(f->fd, 0640, 0, s->file_gid);
f4b47811
LP		 227 if (r < 0)
228 log_warning("Failed to fix access mode/rights on %s, ignoring: %s", f->path, strerror(-r));
229
e6520a0f 230#ifdef HAVE_ACL
f4b47811
LP		 231 if (uid <= 0)
232 return;
233
234 acl = acl_get_fd(f->fd);
235 if (!acl) {
236 log_warning("Failed to read ACL on %s, ignoring: %m", f->path);
237 return;
238 }
239
240 r = acl_find_uid(acl, uid, &entry);
241 if (r <= 0) {
242
243 if (acl_create_entry(&acl, &entry) < 0 ||
244 acl_set_tag_type(entry, ACL_USER) < 0 ||
245 acl_set_qualifier(entry, &uid) < 0) {
246 log_warning("Failed to patch ACL on %s, ignoring: %m", f->path);
247 goto finish;
248 }
249 }
250
251 if (acl_get_permset(entry, &permset) < 0 ||
252 acl_add_perm(permset, ACL_READ) < 0 ||
253 acl_calc_mask(&acl) < 0) {
254 log_warning("Failed to patch ACL on %s, ignoring: %m", f->path);
255 goto finish;
256 }
257
258 if (acl_set_fd(f->fd, acl) < 0)
259 log_warning("Failed to set ACL on %s, ignoring: %m", f->path);
260
261finish:
262 acl_free(acl);
e6520a0f 263#endif
f4b47811
LP		 264}
265
266static JournalFile* find_journal(Server *s, uid_t uid) {
267 char *p;
268 int r;
269 JournalFile *f;
3fbf9cbb
LP		 270 char ids[33];
271 sd_id128_t machine;
f4b47811
LP		 272
273 assert(s);
274
cf244689
LP		 275 /* We split up user logs only on /var, not on /run. If the
276 * runtime file is open, we write to it exclusively, in order
277 * to guarantee proper order as soon as we flush /run to
278 * /var and close the runtime file. */
279
280 if (s->runtime_journal)
f4b47811
LP		 281 return s->runtime_journal;
282
283 if (uid <= 0)
284 return s->system_journal;
285
3fbf9cbb
LP		 286 r = sd_id128_get_machine(&machine);
287 if (r < 0)
288 return s->system_journal;
289
f4b47811
LP		 290 f = hashmap_get(s->user_journals, UINT32_TO_PTR(uid));
291 if (f)
292 return f;
293
3fbf9cbb 294 if (asprintf(&p, "/var/log/journal/%s/user-%lu.journal", sd_id128_to_string(machine, ids), (unsigned long) uid) < 0)
f4b47811
LP		 295 return s->system_journal;
296
cab8ac60
LP		 297 while (hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) {
298 /* Too many open? Then let's close one */
299 f = hashmap_steal_first(s->user_journals);
300 assert(f);
301 journal_file_close(f);
302 }
303
9447a7f1 304 r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->system_journal, &f);
f4b47811
LP		 305 free(p);
306
307 if (r < 0)
308 return s->system_journal;
309
5e41cfec 310 server_fix_perms(s, f, uid);
f4b47811
LP		 311
312 r = hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f);
313 if (r < 0) {
314 journal_file_close(f);
315 return s->system_journal;
316 }
317
318 return f;
319}
320
b1a0ab71
LP		 321static void server_rotate(Server *s) {
322 JournalFile *f;
bc85bfee 323 void *k;
b1a0ab71 324 Iterator i;
bc85bfee 325 int r;
bc85bfee
LP		 326
327 log_info("Rotating...");
328
329 if (s->runtime_journal) {
330 r = journal_file_rotate(&s->runtime_journal);
331 if (r < 0)
332 log_error("Failed to rotate %s: %s", s->runtime_journal->path, strerror(-r));
5e62067d
LP		 333 else
334 server_fix_perms(s, s->runtime_journal, 0);
bc85bfee
LP		 335 }
336
337 if (s->system_journal) {
338 r = journal_file_rotate(&s->system_journal);
339 if (r < 0)
340 log_error("Failed to rotate %s: %s", s->system_journal->path, strerror(-r));
5e62067d
LP		 341 else
342 server_fix_perms(s, s->system_journal, 0);
bc85bfee
LP		 343 }
344
345 HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
346 r = journal_file_rotate(&f);
347 if (r < 0)
348 log_error("Failed to rotate %s: %s", f->path, strerror(-r));
5e62067d 349 else {
bc85bfee 350 hashmap_replace(s->user_journals, k, f);
5e62067d
LP		 351 server_fix_perms(s, s->system_journal, PTR_TO_UINT32(k));
352 }
bc85bfee 353 }
b1a0ab71
LP		 354}
355
356static void server_vacuum(Server *s) {
357 char *p;
358 char ids[33];
359 sd_id128_t machine;
360 int r;
bc85bfee
LP		 361
362 log_info("Vacuuming...");
363
364 r = sd_id128_get_machine(&machine);
365 if (r < 0) {
366 log_error("Failed to get machine ID: %s", strerror(-r));
367 return;
368 }
369
babfc091 370 sd_id128_to_string(machine, ids);
bc85bfee 371
babfc091
LP		 372 if (s->system_journal) {
373 if (asprintf(&p, "/var/log/journal/%s", ids) < 0) {
374 log_error("Out of memory.");
375 return;
376 }
bc85bfee 377
babfc091
LP		 378 r = journal_directory_vacuum(p, s->system_metrics.max_use, s->system_metrics.keep_free);
379 if (r < 0 && r != -ENOENT)
380 log_error("Failed to vacuum %s: %s", p, strerror(-r));
381 free(p);
bc85bfee
LP		 382 }
383
babfc091
LP		 384
385 if (s->runtime_journal) {
386 if (asprintf(&p, "/run/log/journal/%s", ids) < 0) {
387 log_error("Out of memory.");
388 return;
389 }
390
391 r = journal_directory_vacuum(p, s->runtime_metrics.max_use, s->runtime_metrics.keep_free);
392 if (r < 0 && r != -ENOENT)
393 log_error("Failed to vacuum %s: %s", p, strerror(-r));
394 free(p);
395 }
9cfb57c9
LP		 396
397 s->cached_available_space_timestamp = 0;
bc85bfee
LP		 398}
399
6e409ce1
LP		 400static char *shortened_cgroup_path(pid_t pid) {
401 int r;
402 char *process_path, *init_path, *path;
403
404 assert(pid > 0);
405
406 r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &process_path);
407 if (r < 0)
408 return NULL;
409
410 r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &init_path);
411 if (r < 0) {
412 free(process_path);
413 return NULL;
414 }
415
bad75c27
LP		 416 if (endswith(init_path, "/system"))
417 init_path[strlen(init_path) - 7] = 0;
418 else if (streq(init_path, "/"))
6e409ce1
LP		 419 init_path[0] = 0;
420
783d2675
LP		 421 if (startswith(process_path, init_path)) {
422 char *p;
423
424 p = strdup(process_path + strlen(init_path));
425 if (!p) {
426 free(process_path);
427 free(init_path);
428 return NULL;
429 }
430 path = p;
431 } else {
6e409ce1 432 path = process_path;
783d2675
LP		 433 process_path = NULL;
434 }
6e409ce1 435
783d2675 436 free(process_path);
6e409ce1
LP		 437 free(init_path);
438
439 return path;
440}
441
7f2c63cb
LP		 442static void dispatch_message_real(
443 Server *s,
444 struct iovec *iovec, unsigned n, unsigned m,
445 struct ucred *ucred,
446 struct timeval *tv,
447 const char *label, size_t label_len) {
6e409ce1 448
7f3e6257 449 char *pid = NULL, *uid = NULL, *gid = NULL,
87d2c1ff
LP		 450 *source_time = NULL, *boot_id = NULL, *machine_id = NULL,
451 *comm = NULL, *cmdline = NULL, *hostname = NULL,
452 *audit_session = NULL, *audit_loginuid = NULL,
85d83bf4 453 *exe = NULL, *cgroup = NULL, *session = NULL,
8a0f04e6 454 *owner_uid = NULL, *unit = NULL, *selinux_context = NULL;
7f3e6257 455
87d2c1ff
LP		 456 char idbuf[33];
457 sd_id128_t id;
458 int r;
459 char *t;
de190aef 460 uid_t loginuid = 0, realuid = 0;
f4b47811 461 JournalFile *f;
bc85bfee 462 bool vacuumed = false;
87d2c1ff 463
7f3e6257 464 assert(s);
6e409ce1
LP		 465 assert(iovec);
466 assert(n > 0);
224f2ee2 467 assert(n + N_IOVEC_META_FIELDS <= m);
87d2c1ff
LP		 468
469 if (ucred) {
85d83bf4
LP		 470 uint32_t audit;
471 uid_t owner;
87d2c1ff 472
de190aef
LP		 473 realuid = ucred->uid;
474
475 if (asprintf(&pid, "_PID=%lu", (unsigned long) ucred->pid) >= 0)
87d2c1ff
LP		 476 IOVEC_SET_STRING(iovec[n++], pid);
477
de190aef 478 if (asprintf(&uid, "_UID=%lu", (unsigned long) ucred->uid) >= 0)
87d2c1ff
LP		 479 IOVEC_SET_STRING(iovec[n++], uid);
480
de190aef 481 if (asprintf(&gid, "_GID=%lu", (unsigned long) ucred->gid) >= 0)
87d2c1ff
LP		 482 IOVEC_SET_STRING(iovec[n++], gid);
483
484 r = get_process_comm(ucred->pid, &t);
485 if (r >= 0) {
de190aef 486 comm = strappend("_COMM=", t);
85d83bf4
LP		 487 free(t);
488
87d2c1ff
LP		 489 if (comm)
490 IOVEC_SET_STRING(iovec[n++], comm);
87d2c1ff
LP		 491 }
492
493 r = get_process_exe(ucred->pid, &t);
494 if (r >= 0) {
de190aef 495 exe = strappend("_EXE=", t);
85d83bf4
LP		 496 free(t);
497
5c3759bf 498 if (exe)
87d2c1ff 499 IOVEC_SET_STRING(iovec[n++], exe);
87d2c1ff
LP		 500 }
501
502 r = get_process_cmdline(ucred->pid, LINE_MAX, false, &t);
503 if (r >= 0) {
de190aef 504 cmdline = strappend("_CMDLINE=", t);
85d83bf4
LP		 505 free(t);
506
87d2c1ff
LP		 507 if (cmdline)
508 IOVEC_SET_STRING(iovec[n++], cmdline);
87d2c1ff
LP		 509 }
510
85d83bf4 511 r = audit_session_from_pid(ucred->pid, &audit);
87d2c1ff 512 if (r >= 0)
85d83bf4 513 if (asprintf(&audit_session, "_AUDIT_SESSION=%lu", (unsigned long) audit) >= 0)
87d2c1ff
LP		 514 IOVEC_SET_STRING(iovec[n++], audit_session);
515
516 r = audit_loginuid_from_pid(ucred->pid, &loginuid);
517 if (r >= 0)
de190aef 518 if (asprintf(&audit_loginuid, "_AUDIT_LOGINUID=%lu", (unsigned long) loginuid) >= 0)
87d2c1ff 519 IOVEC_SET_STRING(iovec[n++], audit_loginuid);
69e5d42d 520
85d83bf4
LP		 521 t = shortened_cgroup_path(ucred->pid);
522 if (t) {
523 cgroup = strappend("_SYSTEMD_CGROUP=", t);
524 free(t);
525
69e5d42d
LP		 526 if (cgroup)
527 IOVEC_SET_STRING(iovec[n++], cgroup);
85d83bf4
LP		 528 }
529
530 if (sd_pid_get_session(ucred->pid, &t) >= 0) {
531 session = strappend("_SYSTEMD_SESSION=", t);
532 free(t);
533
534 if (session)
535 IOVEC_SET_STRING(iovec[n++], session);
536 }
6e409ce1 537
94fb446e
LP		 538 if (sd_pid_get_unit(ucred->pid, &t) >= 0) {
539 unit = strappend("_SYSTEMD_UNIT=", t);
85d83bf4
LP		 540 free(t);
541
94fb446e
LP		 542 if (unit)
543 IOVEC_SET_STRING(iovec[n++], unit);
69e5d42d 544 }
85d83bf4
LP		 545
546 if (sd_pid_get_owner_uid(ucred->uid, &owner) >= 0)
547 if (asprintf(&owner_uid, "_SYSTEMD_OWNER_UID=%lu", (unsigned long) owner) >= 0)
548 IOVEC_SET_STRING(iovec[n++], owner_uid);
8a0f04e6
LP		 549
550#ifdef HAVE_SELINUX
7f2c63cb
LP		 551 if (label) {
552 selinux_context = malloc(sizeof("_SELINUX_CONTEXT=") + label_len);
553 if (selinux_context) {
554 memcpy(selinux_context, "_SELINUX_CONTEXT=", sizeof("_SELINUX_CONTEXT=")-1);
555 memcpy(selinux_context+sizeof("_SELINUX_CONTEXT=")-1, label, label_len);
556 selinux_context[sizeof("_SELINUX_CONTEXT=")-1+label_len] = 0;
8a0f04e6 557 IOVEC_SET_STRING(iovec[n++], selinux_context);
7f2c63cb
LP		 558 }
559 } else {
560 security_context_t con;
561
562 if (getpidcon(ucred->pid, &con) >= 0) {
563 selinux_context = strappend("_SELINUX_CONTEXT=", con);
564 if (selinux_context)
565 IOVEC_SET_STRING(iovec[n++], selinux_context);
8a0f04e6 566
7f2c63cb
LP		 567 freecon(con);
568 }
8a0f04e6
LP		 569 }
570#endif
87d2c1ff
LP		 571 }
572
573 if (tv) {
de190aef 574 if (asprintf(&source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu",
87d2c1ff
LP		 575 (unsigned long long) timeval_load(tv)) >= 0)
576 IOVEC_SET_STRING(iovec[n++], source_time);
577 }
578
ed49ef3f
LP		 579 /* Note that strictly speaking storing the boot id here is
580 * redundant since the entry includes this in-line
581 * anyway. However, we need this indexed, too. */
87d2c1ff
LP		 582 r = sd_id128_get_boot(&id);
583 if (r >= 0)
de190aef 584 if (asprintf(&boot_id, "_BOOT_ID=%s", sd_id128_to_string(id, idbuf)) >= 0)
87d2c1ff
LP		 585 IOVEC_SET_STRING(iovec[n++], boot_id);
586
587 r = sd_id128_get_machine(&id);
588 if (r >= 0)
de190aef 589 if (asprintf(&machine_id, "_MACHINE_ID=%s", sd_id128_to_string(id, idbuf)) >= 0)
87d2c1ff
LP		 590 IOVEC_SET_STRING(iovec[n++], machine_id);
591
592 t = gethostname_malloc();
593 if (t) {
de190aef 594 hostname = strappend("_HOSTNAME=", t);
85d83bf4 595 free(t);
87d2c1ff
LP		 596 if (hostname)
597 IOVEC_SET_STRING(iovec[n++], hostname);
87d2c1ff
LP		 598 }
599
7f3e6257
LP		 600 assert(n <= m);
601
cf244689
LP		 602 server_flush_to_var(s);
603
bc85bfee 604retry:
de190aef 605 f = find_journal(s, realuid == 0 ? 0 : loginuid);
f4b47811
LP		 606 if (!f)
607 log_warning("Dropping message, as we can't find a place to store the data.");
608 else {
c2373f84 609 r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
87d2c1ff 610
0071d9f1
LP		 611 if ((r == -E2BIG || /* hit limit */
612 r == -EFBIG || /* hit fs limit */
613 r == -EDQUOT || /* quota hit */
614 r == -ENOSPC || /* disk full */
615 r == -EBADMSG || /* corrupted */
616 r == -ENODATA || /* truncated */
617 r == -EHOSTDOWN || /* other machine */
618 r == -EPROTONOSUPPORT) && /* unsupported feature */
619 !vacuumed) {
9447a7f1
LP		 620
621 if (r == -E2BIG)
622 log_info("Allocation limit reached, rotating.");
623 else
624 log_warning("Journal file corrupted, rotating.");
bc85bfee 625
b1a0ab71 626 server_rotate(s);
bc85bfee
LP		 627 server_vacuum(s);
628 vacuumed = true;
629
630 log_info("Retrying write.");
631 goto retry;
632 }
633
f4b47811
LP		 634 if (r < 0)
635 log_error("Failed to write entry, ignoring: %s", strerror(-r));
636 }
87d2c1ff 637
87d2c1ff
LP		 638 free(pid);
639 free(uid);
640 free(gid);
641 free(comm);
69e5d42d 642 free(exe);
87d2c1ff
LP		 643 free(cmdline);
644 free(source_time);
645 free(boot_id);
646 free(machine_id);
647 free(hostname);
648 free(audit_session);
649 free(audit_loginuid);
7f3e6257 650 free(cgroup);
85d83bf4
LP		 651 free(session);
652 free(owner_uid);
94fb446e 653 free(unit);
8a0f04e6 654 free(selinux_context);
7f3e6257
LP		 655}
656
224f2ee2
LP		 657static void driver_message(Server *s, sd_id128_t message_id, const char *format, ...) {
658 char mid[11 + 32 + 1];
659 char buffer[16 + LINE_MAX + 1];
33eb8abf 660 struct iovec iovec[N_IOVEC_META_FIELDS + 4];
224f2ee2
LP		 661 int n = 0;
662 va_list ap;
663 struct ucred ucred;
664
665 assert(s);
666 assert(format);
667
668 IOVEC_SET_STRING(iovec[n++], "PRIORITY=5");
33eb8abf 669 IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver");
224f2ee2
LP		 670
671 memcpy(buffer, "MESSAGE=", 8);
672 va_start(ap, format);
673 vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap);
674 va_end(ap);
675 char_array_0(buffer);
676 IOVEC_SET_STRING(iovec[n++], buffer);
677
678 snprintf(mid, sizeof(mid), "MESSAGE_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(message_id));
679 char_array_0(mid);
680 IOVEC_SET_STRING(iovec[n++], mid);
681
682 zero(ucred);
683 ucred.pid = getpid();
684 ucred.uid = getuid();
685 ucred.gid = getgid();
686
7f2c63cb 687 dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0);
224f2ee2
LP		 688}
689
6e409ce1
LP		 690static void dispatch_message(Server *s,
691 struct iovec *iovec, unsigned n, unsigned m,
692 struct ucred *ucred,
693 struct timeval *tv,
7f2c63cb 694 const char *label, size_t label_len,
6e409ce1
LP		 695 int priority) {
696 int rl;
783d2675 697 char *path = NULL, *c;
6e409ce1
LP		 698
699 assert(s);
700 assert(iovec || n == 0);
701
702 if (n == 0)
703 return;
704
705 if (!ucred)
706 goto finish;
707
708 path = shortened_cgroup_path(ucred->pid);
709 if (!path)
710 goto finish;
711
712 /* example: /user/lennart/3/foobar
713 * /system/dbus.service/foobar
714 *
715 * So let's cut of everything past the third /, since that is
716 * wher user directories start */
717
718 c = strchr(path, '/');
719 if (c) {
720 c = strchr(c+1, '/');
721 if (c) {
722 c = strchr(c+1, '/');
723 if (c)
724 *c = 0;
725 }
726 }
727
224f2ee2 728 rl = journal_rate_limit_test(s->rate_limit, path, priority & LOG_PRIMASK, available_space(s));
6e409ce1
LP		 729
730 if (rl == 0) {
731 free(path);
732 return;
733 }
734
224f2ee2
LP		 735 /* Write a suppression message if we suppressed something */
736 if (rl > 1)
737 driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, "Suppressed %u messages from %s", rl - 1, path);
738
739 free(path);
740
741finish:
7f2c63cb 742 dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len);
224f2ee2
LP		 743}
744
745static void forward_syslog_iovec(Server *s, const struct iovec *iovec, unsigned n_iovec, struct ucred *ucred, struct timeval *tv) {
746 struct msghdr msghdr;
747 struct cmsghdr *cmsg;
748 union {
749 struct cmsghdr cmsghdr;
750 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
751 } control;
752 union sockaddr_union sa;
753
754 assert(s);
755 assert(iovec);
756 assert(n_iovec > 0);
757
758 zero(msghdr);
759 msghdr.msg_iov = (struct iovec*) iovec;
760 msghdr.msg_iovlen = n_iovec;
761
762 zero(sa);
763 sa.un.sun_family = AF_UNIX;
259d2e76 764 strncpy(sa.un.sun_path, "/run/systemd/journal/syslog", sizeof(sa.un.sun_path));
224f2ee2
LP		 765 msghdr.msg_name = &sa;
766 msghdr.msg_namelen = offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path);
767
768 if (ucred) {
769 zero(control);
770 msghdr.msg_control = &control;
771 msghdr.msg_controllen = sizeof(control);
772
773 cmsg = CMSG_FIRSTHDR(&msghdr);
774 cmsg->cmsg_level = SOL_SOCKET;
775 cmsg->cmsg_type = SCM_CREDENTIALS;
776 cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred));
777 memcpy(CMSG_DATA(cmsg), ucred, sizeof(struct ucred));
778 msghdr.msg_controllen = cmsg->cmsg_len;
779 }
780
781 /* Forward the syslog message we received via /dev/log to
782 * /run/systemd/syslog. Unfortunately we currently can't set
783 * the SO_TIMESTAMP auxiliary data, and hence we don't. */
6e409ce1 784
224f2ee2
LP		 785 if (sendmsg(s->syslog_fd, &msghdr, MSG_NOSIGNAL) >= 0)
786 return;
6e409ce1 787
7c8bbccd
LP		 788 /* The socket is full? I guess the syslog implementation is
789 * too slow, and we shouldn't wait for that... */
790 if (errno == EAGAIN)
791 return;
792
224f2ee2
LP		 793 if (ucred && errno == ESRCH) {
794 struct ucred u;
6e409ce1 795
224f2ee2
LP		 796 /* Hmm, presumably the sender process vanished
797 * by now, so let's fix it as good as we
798 * can, and retry */
6e409ce1 799
224f2ee2
LP		 800 u = *ucred;
801 u.pid = getpid();
802 memcpy(CMSG_DATA(cmsg), &u, sizeof(struct ucred));
803
804 if (sendmsg(s->syslog_fd, &msghdr, MSG_NOSIGNAL) >= 0)
805 return;
7c8bbccd
LP		 806
807 if (errno == EAGAIN)
808 return;
6e409ce1
LP		 809 }
810
224f2ee2
LP		 811 log_debug("Failed to forward syslog message: %m");
812}
813
814static void forward_syslog_raw(Server *s, const char *buffer, struct ucred *ucred, struct timeval *tv) {
815 struct iovec iovec;
816
817 assert(s);
818 assert(buffer);
819
820 IOVEC_SET_STRING(iovec, buffer);
821 forward_syslog_iovec(s, &iovec, 1, ucred, tv);
822}
823
4cd9a9d9 824static void forward_syslog(Server *s, int priority, const char *identifier, const char *message, struct ucred *ucred, struct timeval *tv) {
224f2ee2
LP		 825 struct iovec iovec[5];
826 char header_priority[6], header_time[64], header_pid[16];
827 int n = 0;
828 time_t t;
829 struct tm *tm;
4cd9a9d9 830 char *ident_buf = NULL;
224f2ee2
LP		 831
832 assert(s);
833 assert(priority >= 0);
834 assert(priority <= 999);
835 assert(message);
836
837 /* First: priority field */
838 snprintf(header_priority, sizeof(header_priority), "<%i>", priority);
839 char_array_0(header_priority);
840 IOVEC_SET_STRING(iovec[n++], header_priority);
841
842 /* Second: timestamp */
843 t = tv ? tv->tv_sec : ((time_t) (now(CLOCK_REALTIME) / USEC_PER_SEC));
844 tm = localtime(&t);
845 if (!tm)
846 return;
847 if (strftime(header_time, sizeof(header_time), "%h %e %T ", tm) <= 0)
848 return;
849 IOVEC_SET_STRING(iovec[n++], header_time);
850
4cd9a9d9 851 /* Third: identifier and PID */
224f2ee2 852 if (ucred) {
4cd9a9d9
LP		 853 if (!identifier) {
854 get_process_comm(ucred->pid, &ident_buf);
855 identifier = ident_buf;
224f2ee2
LP		 856 }
857
858 snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) ucred->pid);
859 char_array_0(header_pid);
860
4cd9a9d9
LP		 861 if (identifier)
862 IOVEC_SET_STRING(iovec[n++], identifier);
224f2ee2
LP		 863
864 IOVEC_SET_STRING(iovec[n++], header_pid);
4cd9a9d9
LP		 865 } else if (identifier) {
866 IOVEC_SET_STRING(iovec[n++], identifier);
224f2ee2
LP		 867 IOVEC_SET_STRING(iovec[n++], ": ");
868 }
869
870 /* Fourth: message */
871 IOVEC_SET_STRING(iovec[n++], message);
872
873 forward_syslog_iovec(s, iovec, n, ucred, tv);
874
4cd9a9d9 875 free(ident_buf);
224f2ee2
LP		 876}
877
878static int fixup_priority(int priority) {
879
880 if ((priority & LOG_FACMASK) == 0)
881 return (priority & LOG_PRIMASK) | LOG_USER;
882
883 return priority;
884}
885
4cd9a9d9 886static void forward_kmsg(Server *s, int priority, const char *identifier, const char *message, struct ucred *ucred) {
224f2ee2
LP		 887 struct iovec iovec[5];
888 char header_priority[6], header_pid[16];
889 int n = 0;
4cd9a9d9 890 char *ident_buf = NULL;
224f2ee2
LP		 891 int fd;
892
893 assert(s);
894 assert(priority >= 0);
895 assert(priority <= 999);
896 assert(message);
897
898 /* Never allow messages with kernel facility to be written to
899 * kmsg, regardless where the data comes from. */
900 priority = fixup_priority(priority);
901
902 /* First: priority field */
903 snprintf(header_priority, sizeof(header_priority), "<%i>", priority);
904 char_array_0(header_priority);
905 IOVEC_SET_STRING(iovec[n++], header_priority);
906
4cd9a9d9 907 /* Second: identifier and PID */
224f2ee2 908 if (ucred) {
4cd9a9d9
LP		 909 if (!identifier) {
910 get_process_comm(ucred->pid, &ident_buf);
911 identifier = ident_buf;
224f2ee2
LP		 912 }
913
914 snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) ucred->pid);
915 char_array_0(header_pid);
916
4cd9a9d9
LP		 917 if (identifier)
918 IOVEC_SET_STRING(iovec[n++], identifier);
224f2ee2
LP		 919
920 IOVEC_SET_STRING(iovec[n++], header_pid);
4cd9a9d9
LP		 921 } else if (identifier) {
922 IOVEC_SET_STRING(iovec[n++], identifier);
224f2ee2
LP		 923 IOVEC_SET_STRING(iovec[n++], ": ");
924 }
925
926 /* Fourth: message */
927 IOVEC_SET_STRING(iovec[n++], message);
928 IOVEC_SET_STRING(iovec[n++], "\n");
929
930 fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC);
931 if (fd < 0) {
932 log_debug("Failed to open /dev/kmsg for logging: %s", strerror(errno));
933 goto finish;
934 }
935
936 if (writev(fd, iovec, n) < 0)
937 log_debug("Failed to write to /dev/kmsg for logging: %s", strerror(errno));
938
939 close_nointr_nofail(fd);
6e409ce1
LP		 940
941finish:
4cd9a9d9 942 free(ident_buf);
224f2ee2
LP		 943}
944
4cd9a9d9 945static void forward_console(Server *s, const char *identifier, const char *message, struct ucred *ucred) {
224f2ee2
LP		 946 struct iovec iovec[4];
947 char header_pid[16];
948 int n = 0, fd;
4cd9a9d9 949 char *ident_buf = NULL;
224f2ee2
LP		 950
951 assert(s);
952 assert(message);
953
4cd9a9d9 954 /* First: identifier and PID */
224f2ee2 955 if (ucred) {
4cd9a9d9
LP		 956 if (!identifier) {
957 get_process_comm(ucred->pid, &ident_buf);
958 identifier = ident_buf;
224f2ee2
LP		 959 }
960
961 snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) ucred->pid);
962 char_array_0(header_pid);
963
4cd9a9d9
LP		 964 if (identifier)
965 IOVEC_SET_STRING(iovec[n++], identifier);
224f2ee2
LP		 966
967 IOVEC_SET_STRING(iovec[n++], header_pid);
4cd9a9d9
LP		 968 } else if (identifier) {
969 IOVEC_SET_STRING(iovec[n++], identifier);
224f2ee2
LP		 970 IOVEC_SET_STRING(iovec[n++], ": ");
971 }
972
973 /* Third: message */
974 IOVEC_SET_STRING(iovec[n++], message);
975 IOVEC_SET_STRING(iovec[n++], "\n");
976
977 fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
978 if (fd < 0) {
979 log_debug("Failed to open /dev/console for logging: %s", strerror(errno));
980 goto finish;
981 }
982
983 if (writev(fd, iovec, n) < 0)
984 log_debug("Failed to write to /dev/console for logging: %s", strerror(errno));
985
986 close_nointr_nofail(fd);
987
988finish:
4cd9a9d9 989 free(ident_buf);
224f2ee2
LP		 990}
991
6c1e6b98 992static void read_identifier(const char **buf, char **identifier, char **pid) {
224f2ee2
LP		 993 const char *p;
994 char *t;
995 size_t l, e;
996
997 assert(buf);
4cd9a9d9 998 assert(identifier);
6c1e6b98 999 assert(pid);
224f2ee2
LP		 1000
1001 p = *buf;
1002
1003 p += strspn(p, WHITESPACE);
1004 l = strcspn(p, WHITESPACE);
1005
1006 if (l <= 0 ||
1007 p[l-1] != ':')
1008 return;
1009
1010 e = l;
1011 l--;
1012
1013 if (p[l-1] == ']') {
1014 size_t k = l-1;
1015
1016 for (;;) {
1017
1018 if (p[k] == '[') {
6c1e6b98
LP		 1019 t = strndup(p+k+1, l-k-2);
1020 if (t)
1021 *pid = t;
1022
224f2ee2
LP		 1023 l = k;
1024 break;
1025 }
1026
1027 if (k == 0)
1028 break;
1029
1030 k--;
1031 }
1032 }
1033
1034 t = strndup(p, l);
1035 if (t)
4cd9a9d9 1036 *identifier = t;
224f2ee2
LP		 1037
1038 *buf = p + e;
1039 *buf += strspn(*buf, WHITESPACE);
6e409ce1
LP		 1040}
1041
7f2c63cb 1042static void process_syslog_message(Server *s, const char *buf, struct ucred *ucred, struct timeval *tv, const char *label, size_t label_len) {
6c1e6b98
LP		 1043 char *message = NULL, *syslog_priority = NULL, *syslog_facility = NULL, *syslog_identifier = NULL, *syslog_pid = NULL;
1044 struct iovec iovec[N_IOVEC_META_FIELDS + 6];
7f3e6257
LP		 1045 unsigned n = 0;
1046 int priority = LOG_USER | LOG_INFO;
6c1e6b98 1047 char *identifier = NULL, *pid = NULL;
7f3e6257
LP		 1048
1049 assert(s);
1050 assert(buf);
1051
224f2ee2
LP		 1052 if (s->forward_to_syslog)
1053 forward_syslog_raw(s, buf, ucred, tv);
1054
7f3e6257
LP		 1055 parse_syslog_priority((char**) &buf, &priority);
1056 skip_syslog_date((char**) &buf);
6c1e6b98 1057 read_identifier(&buf, &identifier, &pid);
224f2ee2
LP		 1058
1059 if (s->forward_to_kmsg)
4cd9a9d9 1060 forward_kmsg(s, priority, identifier, buf, ucred);
224f2ee2
LP		 1061
1062 if (s->forward_to_console)
4cd9a9d9 1063 forward_console(s, identifier, buf, ucred);
7f3e6257 1064
33eb8abf
LP		 1065 IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=syslog");
1066
7f3e6257
LP		 1067 if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
1068 IOVEC_SET_STRING(iovec[n++], syslog_priority);
1069
224f2ee2
LP		 1070 if (priority & LOG_FACMASK)
1071 if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
1072 IOVEC_SET_STRING(iovec[n++], syslog_facility);
1073
4cd9a9d9
LP		 1074 if (identifier) {
1075 syslog_identifier = strappend("SYSLOG_IDENTIFIER=", identifier);
1076 if (syslog_identifier)
1077 IOVEC_SET_STRING(iovec[n++], syslog_identifier);
224f2ee2 1078 }
7f3e6257 1079
6c1e6b98
LP		 1080 if (pid) {
1081 syslog_pid = strappend("SYSLOG_PID=", pid);
1082 if (syslog_pid)
1083 IOVEC_SET_STRING(iovec[n++], syslog_pid);
1084 }
1085
7f3e6257
LP		 1086 message = strappend("MESSAGE=", buf);
1087 if (message)
1088 IOVEC_SET_STRING(iovec[n++], message);
1089
7f2c63cb 1090 dispatch_message(s, iovec, n, ELEMENTSOF(iovec), ucred, tv, label, label_len, priority);
7f3e6257
LP		 1091
1092 free(message);
4cd9a9d9 1093 free(identifier);
6c1e6b98 1094 free(pid);
87d2c1ff 1095 free(syslog_priority);
224f2ee2 1096 free(syslog_facility);
4cd9a9d9 1097 free(syslog_identifier);
7f3e6257
LP		 1098}
1099
6ad1d1c3
LP		 1100static bool valid_user_field(const char *p, size_t l) {
1101 const char *a;
1102
1103 /* We kinda enforce POSIX syntax recommendations for
1104 environment variables here, but make a couple of additional
1105 requirements.
1106
1107 http://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap08.html */
1108
1109 /* No empty field names */
1110 if (l <= 0)
1111 return false;
1112
1113 /* Don't allow names longer than 64 chars */
1114 if (l > 64)
1115 return false;
1116
1117 /* Variables starting with an underscore are protected */
1118 if (p[0] == '_')
1119 return false;
1120
1121 /* Don't allow digits as first character */
1122 if (p[0] >= '0' && p[0] <= '9')
1123 return false;
1124
1125 /* Only allow A-Z0-9 and '_' */
1126 for (a = p; a < p + l; a++)
1127 if (!((*a >= 'A' && *a <= 'Z') ||
1128 (*a >= '0' && *a <= '9') ||
1129 *a == '_'))
1130 return false;
1131
1132 return true;
1133}
1134
7f2c63cb
LP		 1135static void process_native_message(
1136 Server *s,
1137 const void *buffer, size_t buffer_size,
1138 struct ucred *ucred,
1139 struct timeval *tv,
1140 const char *label, size_t label_len) {
1141
7f3e6257 1142 struct iovec *iovec = NULL;
33eb8abf 1143 unsigned n = 0, m = 0, j, tn = (unsigned) -1;
7f3e6257
LP		 1144 const char *p;
1145 size_t remaining;
6e409ce1 1146 int priority = LOG_INFO;
4cd9a9d9 1147 char *identifier = NULL, *message = NULL;
7f3e6257
LP		 1148
1149 assert(s);
1150 assert(buffer || n == 0);
1151
1152 p = buffer;
1153 remaining = buffer_size;
1154
1155 while (remaining > 0) {
1156 const char *e, *q;
1157
1158 e = memchr(p, '\n', remaining);
1159
1160 if (!e) {
1161 /* Trailing noise, let's ignore it, and flush what we collected */
1162 log_debug("Received message with trailing noise, ignoring.");
1163 break;
1164 }
1165
1166 if (e == p) {
1167 /* Entry separator */
7f2c63cb 1168 dispatch_message(s, iovec, n, m, ucred, tv, label, label_len, priority);
7f3e6257 1169 n = 0;
6e409ce1 1170 priority = LOG_INFO;
7f3e6257
LP		 1171
1172 p++;
1173 remaining--;
1174 continue;
1175 }
1176
6ad1d1c3
LP		 1177 if (*p == '.' || *p == '#') {
1178 /* Ignore control commands for now, and
1179 * comments too. */
7f3e6257
LP		 1180 remaining -= (e - p) + 1;
1181 p = e + 1;
1182 continue;
1183 }
1184
1185 /* A property follows */
1186
224f2ee2 1187 if (n+N_IOVEC_META_FIELDS >= m) {
7f3e6257
LP		 1188 struct iovec *c;
1189 unsigned u;
1190
33eb8abf 1191 u = MAX((n+N_IOVEC_META_FIELDS+1) * 2U, 4U);
7f3e6257
LP		 1192 c = realloc(iovec, u * sizeof(struct iovec));
1193 if (!c) {
1194 log_error("Out of memory");
1195 break;
1196 }
1197
1198 iovec = c;
1199 m = u;
1200 }
1201
1202 q = memchr(p, '=', e - p);
1203 if (q) {
6ad1d1c3 1204 if (valid_user_field(p, q - p)) {
224f2ee2
LP		 1205 size_t l;
1206
1207 l = e - p;
1208
2b0ba69b
LP		 1209 /* If the field name starts with an
1210 * underscore, skip the variable,
1211 * since that indidates a trusted
1212 * field */
1213 iovec[n].iov_base = (char*) p;
224f2ee2 1214 iovec[n].iov_len = l;
2b0ba69b 1215 n++;
6e409ce1
LP		 1216
1217 /* We need to determine the priority
1218 * of this entry for the rate limiting
1219 * logic */
224f2ee2
LP		 1220 if (l == 10 &&
1221 memcmp(p, "PRIORITY=", 9) == 0 &&
1222 p[9] >= '0' && p[9] <= '9')
1223 priority = (priority & LOG_FACMASK) | (p[9] - '0');
1224
1225 else if (l == 17 &&
1226 memcmp(p, "SYSLOG_FACILITY=", 16) == 0 &&
1227 p[16] >= '0' && p[16] <= '9')
1228 priority = (priority & LOG_PRIMASK) | ((p[16] - '0') << 3);
1229
1230 else if (l == 18 &&
1231 memcmp(p, "SYSLOG_FACILITY=", 16) == 0 &&
1232 p[16] >= '0' && p[16] <= '9' &&
1233 p[17] >= '0' && p[17] <= '9')
1234 priority = (priority & LOG_PRIMASK) | (((p[16] - '0')*10 + (p[17] - '0')) << 3);
1235
1236 else if (l >= 12 &&
4cd9a9d9 1237 memcmp(p, "SYSLOG_IDENTIFIER=", 11) == 0) {
224f2ee2
LP		 1238 char *t;
1239
1240 t = strndup(p + 11, l - 11);
1241 if (t) {
4cd9a9d9
LP		 1242 free(identifier);
1243 identifier = t;
224f2ee2
LP		 1244 }
1245 } else if (l >= 8 &&
1246 memcmp(p, "MESSAGE=", 8) == 0) {
1247 char *t;
1248
1249 t = strndup(p + 8, l - 8);
1250 if (t) {
1251 free(message);
1252 message = t;
1253 }
1254 }
2b0ba69b 1255 }
7f3e6257
LP		 1256
1257 remaining -= (e - p) + 1;
1258 p = e + 1;
1259 continue;
1260 } else {
4fd052ae 1261 le64_t l_le;
7f3e6257
LP		 1262 uint64_t l;
1263 char *k;
1264
1265 if (remaining < e - p + 1 + sizeof(uint64_t) + 1) {
1266 log_debug("Failed to parse message, ignoring.");
1267 break;
1268 }
1269
4fd052ae
FC		 1270 memcpy(&l_le, e + 1, sizeof(uint64_t));
1271 l = le64toh(l_le);
7f3e6257
LP		 1272
1273 if (remaining < e - p + 1 + sizeof(uint64_t) + l + 1 ||
1274 e[1+sizeof(uint64_t)+l] != '\n') {
1275 log_debug("Failed to parse message, ignoring.");
1276 break;
1277 }
1278
1279 k = malloc((e - p) + 1 + l);
1280 if (!k) {
1281 log_error("Out of memory");
1282 break;
1283 }
1284
1285 memcpy(k, p, e - p);
1286 k[e - p] = '=';
1287 memcpy(k + (e - p) + 1, e + 1 + sizeof(uint64_t), l);
1288
6ad1d1c3 1289 if (valid_user_field(p, e - p)) {
2b0ba69b
LP		 1290 iovec[n].iov_base = k;
1291 iovec[n].iov_len = (e - p) + 1 + l;
1292 n++;
1293 } else
1294 free(k);
7f3e6257
LP		 1295
1296 remaining -= (e - p) + 1 + sizeof(uint64_t) + l + 1;
1297 p = e + 1 + sizeof(uint64_t) + l + 1;
1298 }
1299 }
1300
33eb8abf
LP		 1301 if (n <= 0)
1302 goto finish;
1303
1304 tn = n++;
1305 IOVEC_SET_STRING(iovec[tn], "_TRANSPORT=journal");
1306
224f2ee2
LP		 1307 if (message) {
1308 if (s->forward_to_syslog)
4cd9a9d9 1309 forward_syslog(s, priority, identifier, message, ucred, tv);
224f2ee2
LP		 1310
1311 if (s->forward_to_kmsg)
4cd9a9d9 1312 forward_kmsg(s, priority, identifier, message, ucred);
224f2ee2
LP		 1313
1314 if (s->forward_to_console)
4cd9a9d9 1315 forward_console(s, identifier, message, ucred);
224f2ee2
LP		 1316 }
1317
7f2c63cb 1318 dispatch_message(s, iovec, n, m, ucred, tv, label, label_len, priority);
7f3e6257 1319
33eb8abf
LP		 1320finish:
1321 for (j = 0; j < n; j++) {
1322 if (j == tn)
1323 continue;
1324
7f3e6257
LP		 1325 if (iovec[j].iov_base < buffer ||
1326 (const uint8_t*) iovec[j].iov_base >= (const uint8_t*) buffer + buffer_size)
1327 free(iovec[j].iov_base);
33eb8abf 1328 }
224f2ee2 1329
071fd8c2 1330 free(iovec);
4cd9a9d9 1331 free(identifier);
224f2ee2 1332 free(message);
87d2c1ff
LP		 1333}
1334
7f2c63cb
LP		 1335static void process_native_file(
1336 Server *s,
1337 int fd,
1338 struct ucred *ucred,
1339 struct timeval *tv,
1340 const char *label, size_t label_len) {
1341
0dad12c1
LP		 1342 struct stat st;
1343 void *p;
1344 ssize_t n;
1345
1346 assert(s);
1347 assert(fd >= 0);
1348
1349 /* Data is in the passed file, since it didn't fit in a
1350 * datagram. We can't map the file here, since clients might
1351 * then truncate it and trigger a SIGBUS for us. So let's
1352 * stupidly read it */
1353
1354 if (fstat(fd, &st) < 0) {
1355 log_error("Failed to stat passed file, ignoring: %m");
1356 return;
1357 }
1358
1359 if (!S_ISREG(st.st_mode)) {
1360 log_error("File passed is not regular. Ignoring.");
1361 return;
1362 }
1363
1364 if (st.st_size <= 0)
1365 return;
1366
1367 if (st.st_size > ENTRY_SIZE_MAX) {
1368 log_error("File passed too large. Ignoring.");
1369 return;
1370 }
1371
1372 p = malloc(st.st_size);
1373 if (!p) {
1374 log_error("Out of memory");
1375 return;
1376 }
1377
1378 n = pread(fd, p, st.st_size, 0);
1379 if (n < 0)
1380 log_error("Failed to read file, ignoring: %s", strerror(-n));
1381 else if (n > 0)
7f2c63cb 1382 process_native_message(s, p, n, ucred, tv, label, label_len);
0dad12c1
LP		 1383
1384 free(p);
1385}
1386
224f2ee2 1387static int stdout_stream_log(StdoutStream *s, const char *p) {
33eb8abf 1388 struct iovec iovec[N_IOVEC_META_FIELDS + 5];
4cd9a9d9 1389 char *message = NULL, *syslog_priority = NULL, *syslog_facility = NULL, *syslog_identifier = NULL;
fe652127 1390 unsigned n = 0;
fe652127 1391 int priority;
7f2c63cb
LP		 1392 char *label = NULL;
1393 size_t label_len = 0;
fe652127 1394
87d2c1ff 1395 assert(s);
fe652127
LP		 1396 assert(p);
1397
0dad12c1
LP		 1398 if (isempty(p))
1399 return 0;
1400
fe652127
LP		 1401 priority = s->priority;
1402
258cdffc 1403 if (s->level_prefix)
224f2ee2 1404 parse_syslog_priority((char**) &p, &priority);
fe652127 1405
224f2ee2 1406 if (s->forward_to_syslog || s->server->forward_to_syslog)
4cd9a9d9 1407 forward_syslog(s->server, fixup_priority(priority), s->identifier, p, &s->ucred, NULL);
fe652127 1408
224f2ee2 1409 if (s->forward_to_kmsg || s->server->forward_to_kmsg)
4cd9a9d9 1410 forward_kmsg(s->server, priority, s->identifier, p, &s->ucred);
fe652127 1411
224f2ee2 1412 if (s->forward_to_console || s->server->forward_to_console)
4cd9a9d9 1413 forward_console(s->server, s->identifier, p, &s->ucred);
224f2ee2 1414
33eb8abf
LP		 1415 IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=stdout");
1416
224f2ee2 1417 if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
fe652127
LP		 1418 IOVEC_SET_STRING(iovec[n++], syslog_priority);
1419
224f2ee2
LP		 1420 if (priority & LOG_FACMASK)
1421 if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
1422 IOVEC_SET_STRING(iovec[n++], syslog_facility);
fe652127 1423
4cd9a9d9
LP		 1424 if (s->identifier) {
1425 syslog_identifier = strappend("SYSLOG_IDENTIFIER=", s->identifier);
1426 if (syslog_identifier)
1427 IOVEC_SET_STRING(iovec[n++], syslog_identifier);
87d2c1ff
LP		 1428 }
1429
224f2ee2
LP		 1430 message = strappend("MESSAGE=", p);
1431 if (message)
1432 IOVEC_SET_STRING(iovec[n++], message);
fe652127 1433
7f2c63cb
LP		 1434#ifdef HAVE_SELINUX
1435 if (s->security_context) {
1436 label = (char*) s->security_context;
1437 label_len = strlen((char*) s->security_context);
1438 }
1439#endif
1440
1441 dispatch_message(s->server, iovec, n, ELEMENTSOF(iovec), &s->ucred, NULL, label, label_len, priority);
fe652127
LP		 1442
1443 free(message);
1444 free(syslog_priority);
224f2ee2 1445 free(syslog_facility);
4cd9a9d9 1446 free(syslog_identifier);
fe652127
LP		 1447
1448 return 0;
1449}
1450
224f2ee2
LP		 1451static int stdout_stream_line(StdoutStream *s, char *p) {
1452 int r;
1453
fe652127
LP		 1454 assert(s);
1455 assert(p);
1456
224f2ee2 1457 p = strstrip(p);
fe652127
LP		 1458
1459 switch (s->state) {
1460
4cd9a9d9 1461 case STDOUT_STREAM_IDENTIFIER:
4c7de074
LP		 1462 if (isempty(p))
1463 s->identifier = NULL;
1464 else {
1465 s->identifier = strdup(p);
1466 if (!s->identifier) {
1467 log_error("Out of memory");
1468 return -ENOMEM;
1469 }
fe652127
LP		 1470 }
1471
1472 s->state = STDOUT_STREAM_PRIORITY;
1473 return 0;
1474
1475 case STDOUT_STREAM_PRIORITY:
224f2ee2
LP		 1476 r = safe_atoi(p, &s->priority);
1477 if (r < 0 || s->priority <= 0 || s->priority >= 999) {
fe652127
LP		 1478 log_warning("Failed to parse log priority line.");
1479 return -EINVAL;
1480 }
1481
258cdffc 1482 s->state = STDOUT_STREAM_LEVEL_PREFIX;
fe652127
LP		 1483 return 0;
1484
258cdffc 1485 case STDOUT_STREAM_LEVEL_PREFIX:
224f2ee2
LP		 1486 r = parse_boolean(p);
1487 if (r < 0) {
258cdffc 1488 log_warning("Failed to parse level prefix line.");
fe652127
LP		 1489 return -EINVAL;
1490 }
1491
258cdffc 1492 s->level_prefix = !!r;
224f2ee2 1493 s->state = STDOUT_STREAM_FORWARD_TO_SYSLOG;
fe652127
LP		 1494 return 0;
1495
224f2ee2
LP		 1496 case STDOUT_STREAM_FORWARD_TO_SYSLOG:
1497 r = parse_boolean(p);
1498 if (r < 0) {
1499 log_warning("Failed to parse forward to syslog line.");
fe652127
LP		 1500 return -EINVAL;
1501 }
1502
224f2ee2
LP		 1503 s->forward_to_syslog = !!r;
1504 s->state = STDOUT_STREAM_FORWARD_TO_KMSG;
1505 return 0;
1506
1507 case STDOUT_STREAM_FORWARD_TO_KMSG:
1508 r = parse_boolean(p);
1509 if (r < 0) {
1510 log_warning("Failed to parse copy to kmsg line.");
1511 return -EINVAL;
1512 }
1513
1514 s->forward_to_kmsg = !!r;
1515 s->state = STDOUT_STREAM_FORWARD_TO_CONSOLE;
1516 return 0;
1517
1518 case STDOUT_STREAM_FORWARD_TO_CONSOLE:
1519 r = parse_boolean(p);
1520 if (r < 0) {
1521 log_warning("Failed to parse copy to console line.");
1522 return -EINVAL;
1523 }
1524
1525 s->forward_to_console = !!r;
fe652127
LP		 1526 s->state = STDOUT_STREAM_RUNNING;
1527 return 0;
1528
1529 case STDOUT_STREAM_RUNNING:
224f2ee2 1530 return stdout_stream_log(s, p);
fe652127
LP		 1531 }
1532
1533 assert_not_reached("Unknown stream state");
1534}
1535
1536static int stdout_stream_scan(StdoutStream *s, bool force_flush) {
1537 char *p;
1538 size_t remaining;
1539 int r;
1540
1541 assert(s);
1542
1543 p = s->buffer;
1544 remaining = s->length;
1545 for (;;) {
1546 char *end;
1547 size_t skip;
1548
1549 end = memchr(p, '\n', remaining);
224f2ee2 1550 if (end)
fe652127 1551 skip = end - p + 1;
224f2ee2
LP		 1552 else if (remaining >= sizeof(s->buffer) - 1) {
1553 end = p + sizeof(s->buffer) - 1;
6c1e6b98 1554 skip = remaining;
224f2ee2
LP		 1555 } else
1556 break;
1557
1558 *end = 0;
fe652127 1559
224f2ee2 1560 r = stdout_stream_line(s, p);
fe652127
LP		 1561 if (r < 0)
1562 return r;
1563
1564 remaining -= skip;
1565 p += skip;
1566 }
1567
1568 if (force_flush && remaining > 0) {
224f2ee2
LP		 1569 p[remaining] = 0;
1570 r = stdout_stream_line(s, p);
fe652127
LP		 1571 if (r < 0)
1572 return r;
1573
1574 p += remaining;
1575 remaining = 0;
1576 }
1577
1578 if (p > s->buffer) {
1579 memmove(s->buffer, p, remaining);
1580 s->length = remaining;
1581 }
1582
1583 return 0;
1584}
1585
1586static int stdout_stream_process(StdoutStream *s) {
1587 ssize_t l;
1588 int r;
1589
1590 assert(s);
1591
1592 l = read(s->fd, s->buffer+s->length, sizeof(s->buffer)-1-s->length);
1593 if (l < 0) {
1594
1595 if (errno == EAGAIN)
1596 return 0;
1597
1598 log_warning("Failed to read from stream: %m");
1599 return -errno;
1600 }
1601
1602 if (l == 0) {
1603 r = stdout_stream_scan(s, true);
1604 if (r < 0)
1605 return r;
1606
1607 return 0;
1608 }
1609
1610 s->length += l;
1611 r = stdout_stream_scan(s, false);
1612 if (r < 0)
1613 return r;
1614
1615 return 1;
1616
1617}
1618
1619static void stdout_stream_free(StdoutStream *s) {
1620 assert(s);
1621
1622 if (s->server) {
1623 assert(s->server->n_stdout_streams > 0);
1624 s->server->n_stdout_streams --;
1625 LIST_REMOVE(StdoutStream, stdout_stream, s->server->stdout_streams, s);
1626 }
1627
1628 if (s->fd >= 0) {
1629 if (s->server)
1630 epoll_ctl(s->server->epoll_fd, EPOLL_CTL_DEL, s->fd, NULL);
1631
1632 close_nointr_nofail(s->fd);
1633 }
1634
7f2c63cb
LP		 1635#ifdef HAVE_SELINUX
1636 if (s->security_context)
1637 freecon(s->security_context);
1638#endif
1639
4cd9a9d9 1640 free(s->identifier);
fe652127
LP		 1641 free(s);
1642}
1643
1644static int stdout_stream_new(Server *s) {
1645 StdoutStream *stream;
1646 int fd, r;
1647 socklen_t len;
1648 struct epoll_event ev;
1649
1650 assert(s);
1651
1652 fd = accept4(s->stdout_fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC);
1653 if (fd < 0) {
1654 if (errno == EAGAIN)
1655 return 0;
1656
1657 log_error("Failed to accept stdout connection: %m");
1658 return -errno;
1659 }
1660
1661 if (s->n_stdout_streams >= STDOUT_STREAMS_MAX) {
1662 log_warning("Too many stdout streams, refusing connection.");
1663 close_nointr_nofail(fd);
1664 return 0;
1665 }
1666
1667 stream = new0(StdoutStream, 1);
1668 if (!stream) {
1669 log_error("Out of memory.");
1670 close_nointr_nofail(fd);
1671 return -ENOMEM;
1672 }
1673
1674 stream->fd = fd;
1675
1676 len = sizeof(stream->ucred);
1677 if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &stream->ucred, &len) < 0) {
1678 log_error("Failed to determine peer credentials: %m");
1679 r = -errno;
1680 goto fail;
1681 }
1682
7f2c63cb
LP		 1683#ifdef HAVE_SELINUX
1684 if (getpeercon(fd, &stream->security_context) < 0)
1685 log_error("Failed to determine peer security context.");
1686#endif
1687
fe652127
LP		 1688 if (shutdown(fd, SHUT_WR) < 0) {
1689 log_error("Failed to shutdown writing side of socket: %m");
1690 r = -errno;
1691 goto fail;
1692 }
1693
1694 zero(ev);
1695 ev.data.ptr = stream;
1696 ev.events = EPOLLIN;
1697 if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) {
1698 log_error("Failed to add stream to event loop: %m");
1699 r = -errno;
1700 goto fail;
1701 }
1702
1703 stream->server = s;
1704 LIST_PREPEND(StdoutStream, stdout_stream, s->stdout_streams, stream);
1705 s->n_stdout_streams ++;
1706
1707 return 0;
1708
1709fail:
1710 stdout_stream_free(stream);
1711 return r;
1712}
1713
6c1e6b98
LP		 1714static int parse_kernel_timestamp(char **_p, usec_t *t) {
1715 usec_t r;
1716 int k, i;
1717 char *p;
1718
1719 assert(_p);
1720 assert(*_p);
1721 assert(t);
1722
1723 p = *_p;
1724
1725 if (strlen(p) < 14 || p[0] != '[' || p[13] != ']' || p[6] != '.')
1726 return 0;
1727
1728 r = 0;
1729
1730 for (i = 1; i <= 5; i++) {
1731 r *= 10;
1732
1733 if (p[i] == ' ')
1734 continue;
1735
1736 k = undecchar(p[i]);
1737 if (k < 0)
1738 return 0;
1739
1740 r += k;
1741 }
1742
1743 for (i = 7; i <= 12; i++) {
1744 r *= 10;
1745
1746 k = undecchar(p[i]);
1747 if (k < 0)
1748 return 0;
1749
1750 r += k;
1751 }
1752
1753 *t = r;
1754 *_p += 14;
1755 *_p += strspn(*_p, WHITESPACE);
1756
1757 return 1;
1758}
1759
1760static void proc_kmsg_line(Server *s, const char *p) {
1761 struct iovec iovec[N_IOVEC_META_FIELDS + 7];
1762 char *message = NULL, *syslog_priority = NULL, *syslog_pid = NULL, *syslog_facility = NULL, *syslog_identifier = NULL, *source_time = NULL;
1763 int priority = LOG_KERN | LOG_INFO;
1764 unsigned n = 0;
1765 usec_t usec;
1766 char *identifier = NULL, *pid = NULL;
1767
1768 assert(s);
1769 assert(p);
1770
0dad12c1
LP		 1771 if (isempty(p))
1772 return;
1773
6c1e6b98
LP		 1774 parse_syslog_priority((char **) &p, &priority);
1775
1776 if (s->forward_to_kmsg && (priority & LOG_FACMASK) != LOG_KERN)
1777 return;
1778
1779 if (parse_kernel_timestamp((char **) &p, &usec) > 0) {
1780 if (asprintf(&source_time, "_SOURCE_MONOTONIC_TIMESTAMP=%llu",
1781 (unsigned long long) usec) >= 0)
1782 IOVEC_SET_STRING(iovec[n++], source_time);
1783 }
1784
1785 IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=kernel");
1786
1787 if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
1788 IOVEC_SET_STRING(iovec[n++], syslog_priority);
1789
1790 if ((priority & LOG_FACMASK) == LOG_KERN) {
1791
1792 if (s->forward_to_syslog)
1793 forward_syslog(s, priority, "kernel", p, NULL, NULL);
1794
1795 IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=kernel");
1796 } else {
1797 read_identifier(&p, &identifier, &pid);
1798
1799 if (s->forward_to_syslog)
1800 forward_syslog(s, priority, identifier, p, NULL, NULL);
1801
1802 if (identifier) {
1803 syslog_identifier = strappend("SYSLOG_IDENTIFIER=", identifier);
1804 if (syslog_identifier)
1805 IOVEC_SET_STRING(iovec[n++], syslog_identifier);
1806 }
1807
1808 if (pid) {
1809 syslog_pid = strappend("SYSLOG_PID=", pid);
1810 if (syslog_pid)
1811 IOVEC_SET_STRING(iovec[n++], syslog_pid);
1812 }
1813
1814 if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
1815 IOVEC_SET_STRING(iovec[n++], syslog_facility);
1816 }
1817
1818 message = strappend("MESSAGE=", p);
1819 if (message)
1820 IOVEC_SET_STRING(iovec[n++], message);
1821
7f2c63cb 1822 dispatch_message(s, iovec, n, ELEMENTSOF(iovec), NULL, NULL, NULL, 0, priority);
6c1e6b98
LP		 1823
1824 free(message);
1825 free(syslog_priority);
1826 free(syslog_identifier);
1827 free(syslog_pid);
1828 free(syslog_facility);
1829 free(source_time);
1830 free(identifier);
1831 free(pid);
1832}
1833
1834static void proc_kmsg_scan(Server *s) {
1835 char *p;
1836 size_t remaining;
1837
1838 assert(s);
1839
1840 p = s->proc_kmsg_buffer;
1841 remaining = s->proc_kmsg_length;
1842 for (;;) {
1843 char *end;
1844 size_t skip;
1845
1846 end = memchr(p, '\n', remaining);
1847 if (end)
1848 skip = end - p + 1;
1849 else if (remaining >= sizeof(s->proc_kmsg_buffer) - 1) {
1850 end = p + sizeof(s->proc_kmsg_buffer) - 1;
1851 skip = remaining;
1852 } else
1853 break;
1854
1855 *end = 0;
1856
1857 proc_kmsg_line(s, p);
1858
1859 remaining -= skip;
1860 p += skip;
1861 }
1862
1863 if (p > s->proc_kmsg_buffer) {
1864 memmove(s->proc_kmsg_buffer, p, remaining);
1865 s->proc_kmsg_length = remaining;
1866 }
1867}
1868
cf244689
LP		 1869static int system_journal_open(Server *s) {
1870 int r;
1871 char *fn;
1872 sd_id128_t machine;
1873 char ids[33];
1874
1875 r = sd_id128_get_machine(&machine);
1876 if (r < 0)
1877 return r;
1878
1879 sd_id128_to_string(machine, ids);
1880
1881 if (!s->system_journal) {
1882
1883 /* First try to create the machine path, but not the prefix */
1884 fn = strappend("/var/log/journal/", ids);
1885 if (!fn)
1886 return -ENOMEM;
1887 (void) mkdir(fn, 0755);
1888 free(fn);
1889
1890 /* The create the system journal file */
1891 fn = join("/var/log/journal/", ids, "/system.journal", NULL);
1892 if (!fn)
1893 return -ENOMEM;
1894
9447a7f1 1895 r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, NULL, &s->system_journal);
cf244689
LP		 1896 free(fn);
1897
1898 if (r >= 0) {
babfc091
LP		 1899 journal_default_metrics(&s->system_metrics, s->system_journal->fd);
1900
1901 s->system_journal->metrics = s->system_metrics;
cf244689
LP		 1902 s->system_journal->compress = s->compress;
1903
5e41cfec 1904 server_fix_perms(s, s->system_journal, 0);
cf244689
LP		 1905 } else if (r < 0) {
1906
adf7d506
LP		 1907 if (r != -ENOENT && r != -EROFS)
1908 log_warning("Failed to open system journal: %s", strerror(-r));
1909
1910 r = 0;
cf244689
LP		 1911 }
1912 }
1913
1914 if (!s->runtime_journal) {
1915
1916 fn = join("/run/log/journal/", ids, "/system.journal", NULL);
1917 if (!fn)
1918 return -ENOMEM;
1919
1920 if (s->system_journal) {
1921
1922 /* Try to open the runtime journal, but only
1923 * if it already exists, so that we can flush
1924 * it into the system journal */
1925
27d1ae06 1926 r = journal_file_open(fn, O_RDWR, 0640, NULL, &s->runtime_journal);
cf244689
LP		 1927 free(fn);
1928
1929 if (r < 0) {
adf7d506
LP		 1930 if (r != -ENOENT)
1931 log_warning("Failed to open runtime journal: %s", strerror(-r));
cf244689 1932
adf7d506 1933 r = 0;
cf244689
LP		 1934 }
1935
1936 } else {
1937
1938 /* OK, we really need the runtime journal, so create
1939 * it if necessary. */
1940
1941 (void) mkdir_parents(fn, 0755);
9447a7f1 1942 r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, NULL, &s->runtime_journal);
cf244689
LP		 1943 free(fn);
1944
1945 if (r < 0) {
1946 log_error("Failed to open runtime journal: %s", strerror(-r));
1947 return r;
1948 }
1949 }
1950
1951 if (s->runtime_journal) {
babfc091
LP		 1952 journal_default_metrics(&s->runtime_metrics, s->runtime_journal->fd);
1953
1954 s->runtime_journal->metrics = s->runtime_metrics;
cf244689
LP		 1955 s->runtime_journal->compress = s->compress;
1956
5e41cfec 1957 server_fix_perms(s, s->runtime_journal, 0);
cf244689
LP		 1958 }
1959 }
1960
1961 return r;
1962}
1963
1964static int server_flush_to_var(Server *s) {
1965 char path[] = "/run/log/journal/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
1966 Object *o = NULL;
1967 int r;
1968 sd_id128_t machine;
1969 sd_journal *j;
54a7b863 1970 usec_t ts;
cf244689
LP		 1971
1972 assert(s);
1973
54a7b863
LP		 1974 if (!s->runtime_journal)
1975 return 0;
1976
1977 ts = now(CLOCK_MONOTONIC);
1978 if (s->var_available_timestamp + RECHECK_VAR_AVAILABLE_USEC > ts)
1979 return 0;
1980
1981 s->var_available_timestamp = ts;
1982
cf244689
LP		 1983 system_journal_open(s);
1984
54a7b863 1985 if (!s->system_journal)
cf244689
LP		 1986 return 0;
1987
6c1e6b98
LP		 1988 log_info("Flushing to /var...");
1989
cf244689
LP		 1990 r = sd_id128_get_machine(&machine);
1991 if (r < 0) {
1992 log_error("Failed to get machine id: %s", strerror(-r));
1993 return r;
1994 }
1995
1996 r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY);
1997 if (r < 0) {
1998 log_error("Failed to read runtime journal: %s", strerror(-r));
1999 return r;
2000 }
2001
2002 SD_JOURNAL_FOREACH(j) {
2003 JournalFile *f;
2004
2005 f = j->current_file;
2006 assert(f && f->current_offset > 0);
2007
2008 r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o);
2009 if (r < 0) {
2010 log_error("Can't read entry: %s", strerror(-r));
2011 goto finish;
2012 }
2013
2014 r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
2015 if (r == -E2BIG) {
2016 log_info("Allocation limit reached.");
2017
2018 journal_file_post_change(s->system_journal);
b1a0ab71 2019 server_rotate(s);
cf244689
LP		 2020 server_vacuum(s);
2021
2022 r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
2023 }
2024
2025 if (r < 0) {
2026 log_error("Can't write entry: %s", strerror(-r));
2027 goto finish;
2028 }
2029 }
2030
2031finish:
2032 journal_file_post_change(s->system_journal);
2033
2034 journal_file_close(s->runtime_journal);
2035 s->runtime_journal = NULL;
2036
2037 if (r >= 0) {
2038 sd_id128_to_string(machine, path + 17);
2039 rm_rf(path, false, true, false);
2040 }
2041
2042 return r;
2043}
2044
6c1e6b98
LP		 2045static int server_read_proc_kmsg(Server *s) {
2046 ssize_t l;
2047 assert(s);
2048 assert(s->proc_kmsg_fd >= 0);
2049
2050 l = read(s->proc_kmsg_fd, s->proc_kmsg_buffer + s->proc_kmsg_length, sizeof(s->proc_kmsg_buffer) - 1 - s->proc_kmsg_length);
2051 if (l < 0) {
2052
2053 if (errno == EAGAIN || errno == EINTR)
2054 return 0;
2055
2056 log_error("Failed to read from kernel: %m");
2057 return -errno;
2058 }
2059
2060 s->proc_kmsg_length += l;
2061
2062 proc_kmsg_scan(s);
2063 return 1;
2064}
2065
2066static int server_flush_proc_kmsg(Server *s) {
2067 int r;
2068
2069 assert(s);
2070
2071 if (s->proc_kmsg_fd < 0)
2072 return 0;
2073
2074 log_info("Flushing /proc/kmsg...");
2075
2076 for (;;) {
2077 r = server_read_proc_kmsg(s);
2078 if (r < 0)
2079 return r;
2080
2081 if (r == 0)
2082 break;
2083 }
2084
2085 return 0;
2086}
2087
fe652127
LP		 2088static int process_event(Server *s, struct epoll_event *ev) {
2089 assert(s);
2090
87d2c1ff
LP		 2091 if (ev->data.fd == s->signal_fd) {
2092 struct signalfd_siginfo sfsi;
2093 ssize_t n;
2094
fe652127
LP		 2095 if (ev->events != EPOLLIN) {
2096 log_info("Got invalid event from epoll.");
2097 return -EIO;
2098 }
2099
87d2c1ff
LP		 2100 n = read(s->signal_fd, &sfsi, sizeof(sfsi));
2101 if (n != sizeof(sfsi)) {
2102
2103 if (n >= 0)
2104 return -EIO;
2105
2106 if (errno == EINTR || errno == EAGAIN)
6c1e6b98 2107 return 1;
87d2c1ff
LP		 2108
2109 return -errno;
2110 }
2111
cf244689
LP		 2112 if (sfsi.ssi_signo == SIGUSR1) {
2113 server_flush_to_var(s);
2114 return 0;
2115 }
2116
87d2c1ff
LP		 2117 log_debug("Received SIG%s", signal_to_string(sfsi.ssi_signo));
2118 return 0;
2119
6c1e6b98
LP		 2120 } else if (ev->data.fd == s->proc_kmsg_fd) {
2121 int r;
2122
2123 if (ev->events != EPOLLIN) {
2124 log_info("Got invalid event from epoll.");
2125 return -EIO;
2126 }
2127
2128 r = server_read_proc_kmsg(s);
2129 if (r < 0)
2130 return r;
2131
2132 return 1;
2133
fe652127
LP		 2134 } else if (ev->data.fd == s->native_fd ||
2135 ev->data.fd == s->syslog_fd) {
2136
2137 if (ev->events != EPOLLIN) {
2138 log_info("Got invalid event from epoll.");
2139 return -EIO;
2140 }
cec736d2 2141
87d2c1ff 2142 for (;;) {
87d2c1ff
LP		 2143 struct msghdr msghdr;
2144 struct iovec iovec;
2145 struct ucred *ucred = NULL;
2146 struct timeval *tv = NULL;
2147 struct cmsghdr *cmsg;
7f2c63cb
LP		 2148 char *label = NULL;
2149 size_t label_len = 0;
87d2c1ff
LP		 2150 union {
2151 struct cmsghdr cmsghdr;
7264278f
LP		 2152
2153 /* We use NAME_MAX space for the
2154 * SELinux label here. The kernel
2155 * currently enforces no limit, but
2156 * according to suggestions from the
2157 * SELinux people this will change and
2158 * it will probably be identical to
2159 * NAME_MAX. For now we use that, but
2160 * this should be updated one day when
2161 * the final limit is known.*/
87d2c1ff 2162 uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
0dad12c1 2163 CMSG_SPACE(sizeof(struct timeval)) +
7264278f
LP		 2164 CMSG_SPACE(sizeof(int)) + /* fd */
2165 CMSG_SPACE(NAME_MAX)]; /* selinux label */
87d2c1ff
LP		 2166 } control;
2167 ssize_t n;
7f3e6257 2168 int v;
0dad12c1
LP		 2169 int *fds = NULL;
2170 unsigned n_fds = 0;
7f3e6257
LP		 2171
2172 if (ioctl(ev->data.fd, SIOCINQ, &v) < 0) {
2173 log_error("SIOCINQ failed: %m");
2174 return -errno;
2175 }
2176
7f3e6257
LP		 2177 if (s->buffer_size < (size_t) v) {
2178 void *b;
2179 size_t l;
2180
2181 l = MAX(LINE_MAX + (size_t) v, s->buffer_size * 2);
2182 b = realloc(s->buffer, l+1);
2183
2184 if (!b) {
2185 log_error("Couldn't increase buffer.");
2186 return -ENOMEM;
2187 }
2188
2189 s->buffer_size = l;
2190 s->buffer = b;
2191 }
87d2c1ff
LP		 2192
2193 zero(iovec);
7f3e6257
LP		 2194 iovec.iov_base = s->buffer;
2195 iovec.iov_len = s->buffer_size;
87d2c1ff
LP		 2196
2197 zero(control);
2198 zero(msghdr);
2199 msghdr.msg_iov = &iovec;
2200 msghdr.msg_iovlen = 1;
2201 msghdr.msg_control = &control;
2202 msghdr.msg_controllen = sizeof(control);
2203
0dad12c1 2204 n = recvmsg(ev->data.fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
87d2c1ff
LP		 2205 if (n < 0) {
2206
2207 if (errno == EINTR || errno == EAGAIN)
2208 return 1;
2209
2210 log_error("recvmsg() failed: %m");
2211 return -errno;
2212 }
2213
2214 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
2215
2216 if (cmsg->cmsg_level == SOL_SOCKET &&
2217 cmsg->cmsg_type == SCM_CREDENTIALS &&
2218 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred)))
2219 ucred = (struct ucred*) CMSG_DATA(cmsg);
2220 else if (cmsg->cmsg_level == SOL_SOCKET &&
7f2c63cb
LP		 2221 cmsg->cmsg_type == SCM_SECURITY) {
2222 label = (char*) CMSG_DATA(cmsg);
2223 label_len = cmsg->cmsg_len - CMSG_LEN(0);
2224 } else if (cmsg->cmsg_level == SOL_SOCKET &&
87d2c1ff
LP		 2225 cmsg->cmsg_type == SO_TIMESTAMP &&
2226 cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval)))
2227 tv = (struct timeval*) CMSG_DATA(cmsg);
0dad12c1
LP		 2228 else if (cmsg->cmsg_level == SOL_SOCKET &&
2229 cmsg->cmsg_type == SCM_RIGHTS) {
2230 fds = (int*) CMSG_DATA(cmsg);
2231 n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
2232 }
87d2c1ff
LP		 2233 }
2234
7f3e6257
LP		 2235 if (ev->data.fd == s->syslog_fd) {
2236 char *e;
2237
0dad12c1
LP		 2238 if (n > 0 && n_fds == 0) {
2239 e = memchr(s->buffer, '\n', n);
2240 if (e)
2241 *e = 0;
2242 else
2243 s->buffer[n] = 0;
2244
7f2c63cb 2245 process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len);
0dad12c1
LP		 2246 } else if (n_fds > 0)
2247 log_warning("Got file descriptors via syslog socket. Ignoring.");
2248
2249 } else {
2250 if (n > 0 && n_fds == 0)
7f2c63cb 2251 process_native_message(s, s->buffer, n, ucred, tv, label, label_len);
0dad12c1 2252 else if (n == 0 && n_fds == 1)
7f2c63cb 2253 process_native_file(s, fds[0], ucred, tv, label, label_len);
0dad12c1
LP		 2254 else if (n_fds > 0)
2255 log_warning("Got too many file descriptors via native socket. Ignoring.");
2256 }
87d2c1ff 2257
0dad12c1 2258 close_many(fds, n_fds);
87d2c1ff 2259 }
cec736d2
LP		 2260
2261 return 1;
fe652127
LP		 2262
2263 } else if (ev->data.fd == s->stdout_fd) {
2264
2265 if (ev->events != EPOLLIN) {
2266 log_info("Got invalid event from epoll.");
2267 return -EIO;
2268 }
2269
2270 stdout_stream_new(s);
2271 return 1;
2272
2273 } else {
2274 StdoutStream *stream;
2275
2276 if ((ev->events|EPOLLIN|EPOLLHUP) != (EPOLLIN|EPOLLHUP)) {
2277 log_info("Got invalid event from epoll.");
2278 return -EIO;
2279 }
2280
2281 /* If it is none of the well-known fds, it must be an
2282 * stdout stream fd. Note that this is a bit ugly here
2283 * (since we rely that none of the well-known fds
2284 * could be interpreted as pointer), but nonetheless
2285 * safe, since the well-known fds would never get an
2286 * fd > 4096, i.e. beyond the first memory page */
2287
2288 stream = ev->data.ptr;
2289
2290 if (stdout_stream_process(stream) <= 0)
2291 stdout_stream_free(stream);
2292
2293 return 1;
87d2c1ff
LP		 2294 }
2295
cec736d2
LP		 2296 log_error("Unknown event.");
2297 return 0;
87d2c1ff
LP		 2298}
2299
7f3e6257
LP		 2300static int open_syslog_socket(Server *s) {
2301 union sockaddr_union sa;
2302 int one, r;
fe652127 2303 struct epoll_event ev;
87d2c1ff
LP		 2304
2305 assert(s);
2306
7f3e6257 2307 if (s->syslog_fd < 0) {
87d2c1ff 2308
6c1e6b98 2309 s->syslog_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
7f3e6257
LP		 2310 if (s->syslog_fd < 0) {
2311 log_error("socket() failed: %m");
2312 return -errno;
2313 }
2314
2315 zero(sa);
2316 sa.un.sun_family = AF_UNIX;
8b18eb67 2317 strncpy(sa.un.sun_path, "/dev/log", sizeof(sa.un.sun_path));
7f3e6257
LP		 2318
2319 unlink(sa.un.sun_path);
2320
2321 r = bind(s->syslog_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path));
2322 if (r < 0) {
2323 log_error("bind() failed: %m");
2324 return -errno;
2325 }
2326
2327 chmod(sa.un.sun_path, 0666);
632117b7
LP		 2328 } else
2329 fd_nonblock(s->syslog_fd, 1);
87d2c1ff 2330
7f3e6257
LP		 2331 one = 1;
2332 r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
2333 if (r < 0) {
2334 log_error("SO_PASSCRED failed: %m");
2335 return -errno;
87d2c1ff
LP		 2336 }
2337
6bc1ce40 2338#ifdef HAVE_SELINUX
54ecda32
LP		 2339 one = 1;
2340 r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one));
2341 if (r < 0)
2342 log_warning("SO_PASSSEC failed: %m");
67aa4551 2343#endif
54ecda32 2344
7f3e6257
LP		 2345 one = 1;
2346 r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one));
2347 if (r < 0) {
2348 log_error("SO_TIMESTAMP failed: %m");
2349 return -errno;
87d2c1ff
LP		 2350 }
2351
fe652127
LP		 2352 zero(ev);
2353 ev.events = EPOLLIN;
2354 ev.data.fd = s->syslog_fd;
2355 if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->syslog_fd, &ev) < 0) {
2356 log_error("Failed to add syslog server fd to epoll object: %m");
2357 return -errno;
2358 }
2359
7f3e6257
LP		 2360 return 0;
2361}
87d2c1ff 2362
7f3e6257
LP		 2363static int open_native_socket(Server*s) {
2364 union sockaddr_union sa;
2365 int one, r;
fe652127 2366 struct epoll_event ev;
7f3e6257
LP		 2367
2368 assert(s);
2369
2370 if (s->native_fd < 0) {
2371
6c1e6b98 2372 s->native_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
7f3e6257 2373 if (s->native_fd < 0) {
87d2c1ff
LP		 2374 log_error("socket() failed: %m");
2375 return -errno;
2376 }
2377
2378 zero(sa);
2379 sa.un.sun_family = AF_UNIX;
259d2e76 2380 strncpy(sa.un.sun_path, "/run/systemd/journal/socket", sizeof(sa.un.sun_path));
87d2c1ff
LP		 2381
2382 unlink(sa.un.sun_path);
2383
7f3e6257 2384 r = bind(s->native_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path));
87d2c1ff
LP		 2385 if (r < 0) {
2386 log_error("bind() failed: %m");
2387 return -errno;
2388 }
2389
2390 chmod(sa.un.sun_path, 0666);
632117b7
LP		 2391 } else
2392 fd_nonblock(s->native_fd, 1);
87d2c1ff
LP		 2393
2394 one = 1;
7f3e6257 2395 r = setsockopt(s->native_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
87d2c1ff
LP		 2396 if (r < 0) {
2397 log_error("SO_PASSCRED failed: %m");
2398 return -errno;
2399 }
2400
67aa4551 2401#ifdef HAVE_SELINUX
54ecda32
LP		 2402 one = 1;
2403 r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one));
2404 if (r < 0)
2405 log_warning("SO_PASSSEC failed: %m");
67aa4551 2406#endif
54ecda32 2407
87d2c1ff 2408 one = 1;
7f3e6257 2409 r = setsockopt(s->native_fd, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one));
87d2c1ff
LP		 2410 if (r < 0) {
2411 log_error("SO_TIMESTAMP failed: %m");
2412 return -errno;
2413 }
2414
fe652127
LP		 2415 zero(ev);
2416 ev.events = EPOLLIN;
2417 ev.data.fd = s->native_fd;
2418 if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->native_fd, &ev) < 0) {
2419 log_error("Failed to add native server fd to epoll object: %m");
2420 return -errno;
2421 }
2422
7f3e6257
LP		 2423 return 0;
2424}
2425
fe652127
LP		 2426static int open_stdout_socket(Server *s) {
2427 union sockaddr_union sa;
2428 int r;
7f3e6257 2429 struct epoll_event ev;
fe652127
LP		 2430
2431 assert(s);
2432
2433 if (s->stdout_fd < 0) {
2434
6c1e6b98 2435 s->stdout_fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
fe652127
LP		 2436 if (s->stdout_fd < 0) {
2437 log_error("socket() failed: %m");
2438 return -errno;
2439 }
2440
2441 zero(sa);
2442 sa.un.sun_family = AF_UNIX;
259d2e76 2443 strncpy(sa.un.sun_path, "/run/systemd/journal/stdout", sizeof(sa.un.sun_path));
fe652127
LP		 2444
2445 unlink(sa.un.sun_path);
2446
2447 r = bind(s->stdout_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path));
2448 if (r < 0) {
2449 log_error("bind() failed: %m");
2450 return -errno;
2451 }
2452
2453 chmod(sa.un.sun_path, 0666);
2454
2455 if (listen(s->stdout_fd, SOMAXCONN) < 0) {
2456 log_error("liste() failed: %m");
2457 return -errno;
2458 }
632117b7
LP		 2459 } else
2460 fd_nonblock(s->stdout_fd, 1);
fe652127
LP		 2461
2462 zero(ev);
2463 ev.events = EPOLLIN;
2464 ev.data.fd = s->stdout_fd;
2465 if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->stdout_fd, &ev) < 0) {
2466 log_error("Failed to add stdout server fd to epoll object: %m");
2467 return -errno;
2468 }
2469
2470 return 0;
2471}
2472
6c1e6b98
LP		 2473static int open_proc_kmsg(Server *s) {
2474 struct epoll_event ev;
2475
2476 assert(s);
2477
2478 if (!s->import_proc_kmsg)
2479 return 0;
2480
2481
2482 s->proc_kmsg_fd = open("/proc/kmsg", O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
2483 if (s->proc_kmsg_fd < 0) {
2484 log_warning("Failed to open /proc/kmsg, ignoring: %m");
2485 return 0;
2486 }
2487
2488 zero(ev);
2489 ev.events = EPOLLIN;
2490 ev.data.fd = s->proc_kmsg_fd;
2491 if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->proc_kmsg_fd, &ev) < 0) {
2492 log_error("Failed to add /proc/kmsg fd to epoll object: %m");
2493 return -errno;
2494 }
2495
2496 return 0;
2497}
2498
fe652127 2499static int open_signalfd(Server *s) {
7f3e6257 2500 sigset_t mask;
fe652127
LP		 2501 struct epoll_event ev;
2502
2503 assert(s);
2504
2505 assert_se(sigemptyset(&mask) == 0);
cf244689 2506 sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, -1);
fe652127
LP		 2507 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
2508
2509 s->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
2510 if (s->signal_fd < 0) {
2511 log_error("signalfd(): %m");
2512 return -errno;
2513 }
2514
2515 zero(ev);
2516 ev.events = EPOLLIN;
2517 ev.data.fd = s->signal_fd;
2518
2519 if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->signal_fd, &ev) < 0) {
2520 log_error("epoll_ctl(): %m");
2521 return -errno;
2522 }
2523
2524 return 0;
2525}
2526
effb1102
LP		 2527static int server_parse_proc_cmdline(Server *s) {
2528 char *line, *w, *state;
2529 int r;
2530 size_t l;
2531
2532 if (detect_container(NULL) > 0)
2533 return 0;
2534
2535 r = read_one_line_file("/proc/cmdline", &line);
2536 if (r < 0) {
2537 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
2538 return 0;
2539 }
2540
2541 FOREACH_WORD_QUOTED(w, l, line, state) {
2542 char *word;
2543
2544 word = strndup(w, l);
2545 if (!word) {
2546 r = -ENOMEM;
2547 goto finish;
2548 }
2549
2550 if (startswith(word, "systemd_journald.forward_to_syslog=")) {
2551 r = parse_boolean(word + 35);
2552 if (r < 0)
2553 log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35);
2554 else
2555 s->forward_to_syslog = r;
2556 } else if (startswith(word, "systemd_journald.forward_to_kmsg=")) {
2557 r = parse_boolean(word + 33);
2558 if (r < 0)
2559 log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33);
2560 else
2561 s->forward_to_kmsg = r;
2562 } else if (startswith(word, "systemd_journald.forward_to_console=")) {
2563 r = parse_boolean(word + 36);
2564 if (r < 0)
2565 log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36);
2566 else
2567 s->forward_to_console = r;
2568 }
2569
2570 free(word);
2571 }
2572
2573 r = 0;
2574
2575finish:
2576 free(line);
2577 return r;
2578}
2579
e6960940
LP		 2580static int server_parse_config_file(Server *s) {
2581 FILE *f;
2582 const char *fn;
2583 int r;
2584
2585 assert(s);
2586
18b754d3 2587 fn = "/etc/systemd/journald.conf";
e6960940
LP		 2588 f = fopen(fn, "re");
2589 if (!f) {
2590 if (errno == ENOENT)
2591 return 0;
2592
2593 log_warning("Failed to open configuration file %s: %m", fn);
2594 return -errno;
2595 }
2596
2597 r = config_parse(fn, f, "Journal\0", config_item_perf_lookup, (void*) journald_gperf_lookup, false, s);
2598 if (r < 0)
2599 log_warning("Failed to parse configuration file: %s", strerror(-r));
2600
2601 fclose(f);
2602
2603 return r;
2604}
2605
fe652127
LP		 2606static int server_init(Server *s) {
2607 int n, r, fd;
7f3e6257
LP		 2608
2609 assert(s);
2610
2611 zero(*s);
6c1e6b98 2612 s->syslog_fd = s->native_fd = s->stdout_fd = s->signal_fd = s->epoll_fd = s->proc_kmsg_fd = -1;
807e17f0 2613 s->compress = true;
7f3e6257 2614
e6960940
LP		 2615 s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL;
2616 s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST;
2617
224f2ee2 2618 s->forward_to_syslog = true;
6c1e6b98 2619 s->import_proc_kmsg = true;
224f2ee2 2620
babfc091
LP		 2621 memset(&s->system_metrics, 0xFF, sizeof(s->system_metrics));
2622 memset(&s->runtime_metrics, 0xFF, sizeof(s->runtime_metrics));
2623
e6960940 2624 server_parse_config_file(s);
effb1102 2625 server_parse_proc_cmdline(s);
e6960940 2626
fe652127
LP		 2627 s->user_journals = hashmap_new(trivial_hash_func, trivial_compare_func);
2628 if (!s->user_journals) {
2629 log_error("Out of memory.");
2630 return -ENOMEM;
2631 }
2632
7f3e6257
LP		 2633 s->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
2634 if (s->epoll_fd < 0) {
2635 log_error("Failed to create epoll object: %m");
2636 return -errno;
2637 }
2638
2639 n = sd_listen_fds(true);
2640 if (n < 0) {
2641 log_error("Failed to read listening file descriptors from environment: %s", strerror(-n));
2642 return n;
2643 }
2644
2645 for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
2646
259d2e76 2647 if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) {
7f3e6257 2648
fe652127
LP		 2649 if (s->native_fd >= 0) {
2650 log_error("Too many native sockets passed.");
7f3e6257
LP		 2651 return -EINVAL;
2652 }
2653
fe652127 2654 s->native_fd = fd;
7f3e6257 2655
259d2e76 2656 } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) {
7f3e6257 2657
fe652127
LP		 2658 if (s->stdout_fd >= 0) {
2659 log_error("Too many stdout sockets passed.");
7f3e6257
LP		 2660 return -EINVAL;
2661 }
2662
fe652127
LP		 2663 s->stdout_fd = fd;
2664
2665 } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0) {
2666
2667 if (s->syslog_fd >= 0) {
2668 log_error("Too many /dev/log sockets passed.");
2669 return -EINVAL;
2670 }
2671
2672 s->syslog_fd = fd;
2673
7f3e6257
LP		 2674 } else {
2675 log_error("Unknown socket passed.");
2676 return -EINVAL;
2677 }
2678 }
2679
2680 r = open_syslog_socket(s);
2681 if (r < 0)
2682 return r;
2683
7f3e6257
LP		 2684 r = open_native_socket(s);
2685 if (r < 0)
2686 return r;
2687
fe652127
LP		 2688 r = open_stdout_socket(s);
2689 if (r < 0)
2690 return r;
87d2c1ff 2691
6c1e6b98
LP		 2692 r = open_proc_kmsg(s);
2693 if (r < 0)
2694 return r;
2695
fe652127
LP		 2696 r = open_signalfd(s);
2697 if (r < 0)
2698 return r;
87d2c1ff 2699
e6960940 2700 s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst);
6e409ce1
LP		 2701 if (!s->rate_limit)
2702 return -ENOMEM;
2703
9447a7f1
LP		 2704 r = system_journal_open(s);
2705 if (r < 0)
2706 return r;
2707
87d2c1ff
LP		 2708 return 0;
2709}
2710
2711static void server_done(Server *s) {
2712 JournalFile *f;
2713 assert(s);
2714
fe652127
LP		 2715 while (s->stdout_streams)
2716 stdout_stream_free(s->stdout_streams);
2717
87d2c1ff
LP		 2718 if (s->system_journal)
2719 journal_file_close(s->system_journal);
2720
f4b47811
LP		 2721 if (s->runtime_journal)
2722 journal_file_close(s->runtime_journal);
2723
87d2c1ff
LP		 2724 while ((f = hashmap_steal_first(s->user_journals)))
2725 journal_file_close(f);
2726
2727 hashmap_free(s->user_journals);
2728
2729 if (s->epoll_fd >= 0)
2730 close_nointr_nofail(s->epoll_fd);
2731
2732 if (s->signal_fd >= 0)
2733 close_nointr_nofail(s->signal_fd);
2734
2735 if (s->syslog_fd >= 0)
2736 close_nointr_nofail(s->syslog_fd);
7f3e6257
LP		 2737
2738 if (s->native_fd >= 0)
2739 close_nointr_nofail(s->native_fd);
fe652127
LP		 2740
2741 if (s->stdout_fd >= 0)
2742 close_nointr_nofail(s->stdout_fd);
6e409ce1 2743
6c1e6b98
LP		 2744 if (s->proc_kmsg_fd >= 0)
2745 close_nointr_nofail(s->proc_kmsg_fd);
2746
6e409ce1
LP		 2747 if (s->rate_limit)
2748 journal_rate_limit_free(s->rate_limit);
783d2675
LP		 2749
2750 free(s->buffer);
87d2c1ff
LP		 2751}
2752
2753int main(int argc, char *argv[]) {
2754 Server server;
2755 int r;
2756
2757 /* if (getppid() != 1) { */
2758 /* log_error("This program should be invoked by init only."); */
2759 /* return EXIT_FAILURE; */
2760 /* } */
2761
2762 if (argc > 1) {
2763 log_error("This program does not take arguments.");
2764 return EXIT_FAILURE;
2765 }
2766
f4b47811 2767 log_set_target(LOG_TARGET_CONSOLE);
87d2c1ff
LP		 2768 log_parse_environment();
2769 log_open();
2770
2771 umask(0022);
2772
2773 r = server_init(&server);
2774 if (r < 0)
2775 goto finish;
2776
e6960940
LP		 2777 server_vacuum(&server);
2778 server_flush_to_var(&server);
6c1e6b98 2779 server_flush_proc_kmsg(&server);
e6960940 2780
87d2c1ff 2781 log_debug("systemd-journald running as pid %lu", (unsigned long) getpid());
224f2ee2 2782 driver_message(&server, SD_MESSAGE_JOURNAL_START, "Journal started");
87d2c1ff
LP		 2783
2784 sd_notify(false,
2785 "READY=1\n"
fe652127 2786 "STATUS=Processing requests...");
50f20cfd 2787
87d2c1ff
LP		 2788 for (;;) {
2789 struct epoll_event event;
2790
2791 r = epoll_wait(server.epoll_fd, &event, 1, -1);
2792 if (r < 0) {
2793
2794 if (errno == EINTR)
2795 continue;
2796
2797 log_error("epoll_wait() failed: %m");
2798 r = -errno;
2799 goto finish;
2800 } else if (r == 0)
2801 break;
2802
2803 r = process_event(&server, &event);
2804 if (r < 0)
2805 goto finish;
2806 else if (r == 0)
2807 break;
2808 }
2809
fe652127 2810 log_debug("systemd-journald stopped as pid %lu", (unsigned long) getpid());
224f2ee2 2811 driver_message(&server, SD_MESSAGE_JOURNAL_STOP, "Journal stopped");
fe652127 2812
87d2c1ff
LP		 2813finish:
2814 sd_notify(false,
2815 "STATUS=Shutting down...");
2816
2817 server_done(&server);
2818
2819 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
2820}
Unnamed repository; edit this file 'description' to name the repository.