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[thirdparty/systemd.git] / src / journal / journalctl.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4 This file is part of systemd.
5
6 Copyright 2011 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <locale.h>
23 #include <fcntl.h>
24 #include <fnmatch.h>
25 #include <errno.h>
26 #include <stddef.h>
27 #include <string.h>
28 #include <stdio.h>
29 #include <unistd.h>
30 #include <stdlib.h>
31 #include <getopt.h>
32 #include <signal.h>
33 #include <poll.h>
34 #include <sys/stat.h>
35 #include <sys/inotify.h>
36 #include <linux/fs.h>
37
38 #include "sd-journal.h"
39 #include "sd-bus.h"
40
41 #include "log.h"
42 #include "logs-show.h"
43 #include "util.h"
44 #include "acl-util.h"
45 #include "path-util.h"
46 #include "fileio.h"
47 #include "build.h"
48 #include "pager.h"
49 #include "strv.h"
50 #include "set.h"
51 #include "sigbus.h"
52 #include "journal-internal.h"
53 #include "journal-def.h"
54 #include "journal-verify.h"
55 #include "journal-qrcode.h"
56 #include "journal-vacuum.h"
57 #include "fsprg.h"
58 #include "unit-name.h"
59 #include "catalog.h"
60 #include "mkdir.h"
61 #include "bus-util.h"
62 #include "bus-error.h"
63
64 #define DEFAULT_FSS_INTERVAL_USEC (15*USEC_PER_MINUTE)
65
66 enum {
67 /* Special values for arg_lines */
68 ARG_LINES_DEFAULT = -2,
69 ARG_LINES_ALL = -1,
70 };
71
72 static OutputMode arg_output = OUTPUT_SHORT;
73 static bool arg_utc = false;
74 static bool arg_pager_end = false;
75 static bool arg_follow = false;
76 static bool arg_full = true;
77 static bool arg_all = false;
78 static bool arg_no_pager = false;
79 static int arg_lines = ARG_LINES_DEFAULT;
80 static bool arg_no_tail = false;
81 static bool arg_quiet = false;
82 static bool arg_merge = false;
83 static bool arg_boot = false;
84 static sd_id128_t arg_boot_id = {};
85 static int arg_boot_offset = 0;
86 static bool arg_dmesg = false;
87 static const char *arg_cursor = NULL;
88 static const char *arg_after_cursor = NULL;
89 static bool arg_show_cursor = false;
90 static const char *arg_directory = NULL;
91 static char **arg_file = NULL;
92 static int arg_priorities = 0xFF;
93 static const char *arg_verify_key = NULL;
94 #ifdef HAVE_GCRYPT
95 static usec_t arg_interval = DEFAULT_FSS_INTERVAL_USEC;
96 static bool arg_force = false;
97 #endif
98 static usec_t arg_since, arg_until;
99 static bool arg_since_set = false, arg_until_set = false;
100 static char **arg_syslog_identifier = NULL;
101 static char **arg_system_units = NULL;
102 static char **arg_user_units = NULL;
103 static const char *arg_field = NULL;
104 static bool arg_catalog = false;
105 static bool arg_reverse = false;
106 static int arg_journal_type = 0;
107 static const char *arg_root = NULL;
108 static const char *arg_machine = NULL;
109 static off_t arg_vacuum_size = (off_t) -1;
110 static usec_t arg_vacuum_time = USEC_INFINITY;
111
112 static enum {
113 ACTION_SHOW,
114 ACTION_NEW_ID128,
115 ACTION_PRINT_HEADER,
116 ACTION_SETUP_KEYS,
117 ACTION_VERIFY,
118 ACTION_DISK_USAGE,
119 ACTION_LIST_CATALOG,
120 ACTION_DUMP_CATALOG,
121 ACTION_UPDATE_CATALOG,
122 ACTION_LIST_BOOTS,
123 ACTION_FLUSH,
124 ACTION_VACUUM,
125 } arg_action = ACTION_SHOW;
126
127 typedef struct boot_id_t {
128 sd_id128_t id;
129 uint64_t first;
130 uint64_t last;
131 } boot_id_t;
132
133 static void pager_open_if_enabled(void) {
134
135 if (arg_no_pager)
136 return;
137
138 pager_open(arg_pager_end);
139 }
140
141 static char *format_timestamp_maybe_utc(char *buf, size_t l, usec_t t) {
142
143 if (arg_utc)
144 return format_timestamp_utc(buf, l, t);
145
146 return format_timestamp(buf, l, t);
147 }
148
149 static int parse_boot_descriptor(const char *x, sd_id128_t *boot_id, int *offset) {
150 sd_id128_t id = SD_ID128_NULL;
151 int off = 0, r;
152
153 if (strlen(x) >= 32) {
154 char *t;
155
156 t = strndupa(x, 32);
157 r = sd_id128_from_string(t, &id);
158 if (r >= 0)
159 x += 32;
160
161 if (*x != '-' && *x != '+' && *x != 0)
162 return -EINVAL;
163
164 if (*x != 0) {
165 r = safe_atoi(x, &off);
166 if (r < 0)
167 return r;
168 }
169 } else {
170 r = safe_atoi(x, &off);
171 if (r < 0)
172 return r;
173 }
174
175 if (boot_id)
176 *boot_id = id;
177
178 if (offset)
179 *offset = off;
180
181 return 0;
182 }
183
184 static void help(void) {
185
186 pager_open_if_enabled();
187
188 printf("%s [OPTIONS...] [MATCHES...]\n\n"
189 "Query the journal.\n\n"
190 "Flags:\n"
191 " --system Show the system journal\n"
192 " --user Show the user journal for the current user\n"
193 " -M --machine=CONTAINER Operate on local container\n"
194 " --since=DATE Show entries not older than the specified date\n"
195 " --until=DATE Show entries not newer than the specified date\n"
196 " -c --cursor=CURSOR Show entries starting at the specified cursor\n"
197 " --after-cursor=CURSOR Show entries after the specified cursor\n"
198 " --show-cursor Print the cursor after all the entries\n"
199 " -b --boot[=ID] Show current boot or the specified boot\n"
200 " --list-boots Show terse information about recorded boots\n"
201 " -k --dmesg Show kernel message log from the current boot\n"
202 " -u --unit=UNIT Show logs from the specified unit\n"
203 " --user-unit=UNIT Show logs from the specified user unit\n"
204 " -t --identifier=STRING Show entries with the specified syslog identifier\n"
205 " -p --priority=RANGE Show entries with the specified priority\n"
206 " -e --pager-end Immediately jump to the end in the pager\n"
207 " -f --follow Follow the journal\n"
208 " -n --lines[=INTEGER] Number of journal entries to show\n"
209 " --no-tail Show all lines, even in follow mode\n"
210 " -r --reverse Show the newest entries first\n"
211 " -o --output=STRING Change journal output mode (short, short-iso,\n"
212 " short-precise, short-monotonic, verbose,\n"
213 " export, json, json-pretty, json-sse, cat)\n"
214 " --utc Express time in Coordinated Universal Time (UTC)\n"
215 " -x --catalog Add message explanations where available\n"
216 " --no-full Ellipsize fields\n"
217 " -a --all Show all fields, including long and unprintable\n"
218 " -q --quiet Do not show privilege warning\n"
219 " --no-pager Do not pipe output into a pager\n"
220 " -m --merge Show entries from all available journals\n"
221 " -D --directory=PATH Show journal files from directory\n"
222 " --file=PATH Show journal file\n"
223 " --root=ROOT Operate on catalog files underneath the root ROOT\n"
224 #ifdef HAVE_GCRYPT
225 " --interval=TIME Time interval for changing the FSS sealing key\n"
226 " --verify-key=KEY Specify FSS verification key\n"
227 " --force Override of the FSS key pair with --setup-keys\n"
228 #endif
229 "\nCommands:\n"
230 " -h --help Show this help text\n"
231 " --version Show package version\n"
232 " -F --field=FIELD List all values that a specified field takes\n"
233 " --new-id128 Generate a new 128-bit ID\n"
234 " --disk-usage Show total disk usage of all journal files\n"
235 " --vacuum-size=BYTES Reduce disk usage below specified size\n"
236 " --vacuum-time=TIME Remove journal files older than specified date\n"
237 " --flush Flush all journal data from /run into /var\n"
238 " --header Show journal header information\n"
239 " --list-catalog Show all message IDs in the catalog\n"
240 " --dump-catalog Show entries in the message catalog\n"
241 " --update-catalog Update the message catalog database\n"
242 #ifdef HAVE_GCRYPT
243 " --setup-keys Generate a new FSS key pair\n"
244 " --verify Verify journal file consistency\n"
245 #endif
246 , program_invocation_short_name);
247 }
248
249 static int parse_argv(int argc, char *argv[]) {
250
251 enum {
252 ARG_VERSION = 0x100,
253 ARG_NO_PAGER,
254 ARG_NO_FULL,
255 ARG_NO_TAIL,
256 ARG_NEW_ID128,
257 ARG_LIST_BOOTS,
258 ARG_USER,
259 ARG_SYSTEM,
260 ARG_ROOT,
261 ARG_HEADER,
262 ARG_SETUP_KEYS,
263 ARG_FILE,
264 ARG_INTERVAL,
265 ARG_VERIFY,
266 ARG_VERIFY_KEY,
267 ARG_DISK_USAGE,
268 ARG_SINCE,
269 ARG_UNTIL,
270 ARG_AFTER_CURSOR,
271 ARG_SHOW_CURSOR,
272 ARG_USER_UNIT,
273 ARG_LIST_CATALOG,
274 ARG_DUMP_CATALOG,
275 ARG_UPDATE_CATALOG,
276 ARG_FORCE,
277 ARG_UTC,
278 ARG_FLUSH,
279 ARG_VACUUM_SIZE,
280 ARG_VACUUM_TIME,
281 };
282
283 static const struct option options[] = {
284 { "help", no_argument, NULL, 'h' },
285 { "version" , no_argument, NULL, ARG_VERSION },
286 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
287 { "pager-end", no_argument, NULL, 'e' },
288 { "follow", no_argument, NULL, 'f' },
289 { "force", no_argument, NULL, ARG_FORCE },
290 { "output", required_argument, NULL, 'o' },
291 { "all", no_argument, NULL, 'a' },
292 { "full", no_argument, NULL, 'l' },
293 { "no-full", no_argument, NULL, ARG_NO_FULL },
294 { "lines", optional_argument, NULL, 'n' },
295 { "no-tail", no_argument, NULL, ARG_NO_TAIL },
296 { "new-id128", no_argument, NULL, ARG_NEW_ID128 },
297 { "quiet", no_argument, NULL, 'q' },
298 { "merge", no_argument, NULL, 'm' },
299 { "boot", optional_argument, NULL, 'b' },
300 { "list-boots", no_argument, NULL, ARG_LIST_BOOTS },
301 { "this-boot", optional_argument, NULL, 'b' }, /* deprecated */
302 { "dmesg", no_argument, NULL, 'k' },
303 { "system", no_argument, NULL, ARG_SYSTEM },
304 { "user", no_argument, NULL, ARG_USER },
305 { "directory", required_argument, NULL, 'D' },
306 { "file", required_argument, NULL, ARG_FILE },
307 { "root", required_argument, NULL, ARG_ROOT },
308 { "header", no_argument, NULL, ARG_HEADER },
309 { "identifier", required_argument, NULL, 't' },
310 { "priority", required_argument, NULL, 'p' },
311 { "setup-keys", no_argument, NULL, ARG_SETUP_KEYS },
312 { "interval", required_argument, NULL, ARG_INTERVAL },
313 { "verify", no_argument, NULL, ARG_VERIFY },
314 { "verify-key", required_argument, NULL, ARG_VERIFY_KEY },
315 { "disk-usage", no_argument, NULL, ARG_DISK_USAGE },
316 { "cursor", required_argument, NULL, 'c' },
317 { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR },
318 { "show-cursor", no_argument, NULL, ARG_SHOW_CURSOR },
319 { "since", required_argument, NULL, ARG_SINCE },
320 { "until", required_argument, NULL, ARG_UNTIL },
321 { "unit", required_argument, NULL, 'u' },
322 { "user-unit", required_argument, NULL, ARG_USER_UNIT },
323 { "field", required_argument, NULL, 'F' },
324 { "catalog", no_argument, NULL, 'x' },
325 { "list-catalog", no_argument, NULL, ARG_LIST_CATALOG },
326 { "dump-catalog", no_argument, NULL, ARG_DUMP_CATALOG },
327 { "update-catalog", no_argument, NULL, ARG_UPDATE_CATALOG },
328 { "reverse", no_argument, NULL, 'r' },
329 { "machine", required_argument, NULL, 'M' },
330 { "utc", no_argument, NULL, ARG_UTC },
331 { "flush", no_argument, NULL, ARG_FLUSH },
332 { "vacuum-size", required_argument, NULL, ARG_VACUUM_SIZE },
333 { "vacuum-time", required_argument, NULL, ARG_VACUUM_TIME },
334 {}
335 };
336
337 int c, r;
338
339 assert(argc >= 0);
340 assert(argv);
341
342 while ((c = getopt_long(argc, argv, "hefo:aln::qmb::kD:p:c:t:u:F:xrM:", options, NULL)) >= 0)
343
344 switch (c) {
345
346 case 'h':
347 help();
348 return 0;
349
350 case ARG_VERSION:
351 puts(PACKAGE_STRING);
352 puts(SYSTEMD_FEATURES);
353 return 0;
354
355 case ARG_NO_PAGER:
356 arg_no_pager = true;
357 break;
358
359 case 'e':
360 arg_pager_end = true;
361
362 if (arg_lines == ARG_LINES_DEFAULT)
363 arg_lines = 1000;
364
365 break;
366
367 case 'f':
368 arg_follow = true;
369 break;
370
371 case 'o':
372 arg_output = output_mode_from_string(optarg);
373 if (arg_output < 0) {
374 log_error("Unknown output format '%s'.", optarg);
375 return -EINVAL;
376 }
377
378 if (arg_output == OUTPUT_EXPORT ||
379 arg_output == OUTPUT_JSON ||
380 arg_output == OUTPUT_JSON_PRETTY ||
381 arg_output == OUTPUT_JSON_SSE ||
382 arg_output == OUTPUT_CAT)
383 arg_quiet = true;
384
385 break;
386
387 case 'l':
388 arg_full = true;
389 break;
390
391 case ARG_NO_FULL:
392 arg_full = false;
393 break;
394
395 case 'a':
396 arg_all = true;
397 break;
398
399 case 'n':
400 if (optarg) {
401 if (streq(optarg, "all"))
402 arg_lines = ARG_LINES_ALL;
403 else {
404 r = safe_atoi(optarg, &arg_lines);
405 if (r < 0 || arg_lines < 0) {
406 log_error("Failed to parse lines '%s'", optarg);
407 return -EINVAL;
408 }
409 }
410 } else {
411 arg_lines = 10;
412
413 /* Hmm, no argument? Maybe the next
414 * word on the command line is
415 * supposed to be the argument? Let's
416 * see if there is one, and is
417 * parsable. */
418 if (optind < argc) {
419 int n;
420 if (streq(argv[optind], "all")) {
421 arg_lines = ARG_LINES_ALL;
422 optind++;
423 } else if (safe_atoi(argv[optind], &n) >= 0 && n >= 0) {
424 arg_lines = n;
425 optind++;
426 }
427 }
428 }
429
430 break;
431
432 case ARG_NO_TAIL:
433 arg_no_tail = true;
434 break;
435
436 case ARG_NEW_ID128:
437 arg_action = ACTION_NEW_ID128;
438 break;
439
440 case 'q':
441 arg_quiet = true;
442 break;
443
444 case 'm':
445 arg_merge = true;
446 break;
447
448 case 'b':
449 arg_boot = true;
450
451 if (optarg) {
452 r = parse_boot_descriptor(optarg, &arg_boot_id, &arg_boot_offset);
453 if (r < 0) {
454 log_error("Failed to parse boot descriptor '%s'", optarg);
455 return -EINVAL;
456 }
457 } else {
458
459 /* Hmm, no argument? Maybe the next
460 * word on the command line is
461 * supposed to be the argument? Let's
462 * see if there is one and is parsable
463 * as a boot descriptor... */
464
465 if (optind < argc &&
466 parse_boot_descriptor(argv[optind], &arg_boot_id, &arg_boot_offset) >= 0)
467 optind++;
468 }
469
470 break;
471
472 case ARG_LIST_BOOTS:
473 arg_action = ACTION_LIST_BOOTS;
474 break;
475
476 case 'k':
477 arg_boot = arg_dmesg = true;
478 break;
479
480 case ARG_SYSTEM:
481 arg_journal_type |= SD_JOURNAL_SYSTEM;
482 break;
483
484 case ARG_USER:
485 arg_journal_type |= SD_JOURNAL_CURRENT_USER;
486 break;
487
488 case 'M':
489 arg_machine = optarg;
490 break;
491
492 case 'D':
493 arg_directory = optarg;
494 break;
495
496 case ARG_FILE:
497 r = glob_extend(&arg_file, optarg);
498 if (r < 0)
499 return log_error_errno(r, "Failed to add paths: %m");
500 break;
501
502 case ARG_ROOT:
503 arg_root = optarg;
504 break;
505
506 case 'c':
507 arg_cursor = optarg;
508 break;
509
510 case ARG_AFTER_CURSOR:
511 arg_after_cursor = optarg;
512 break;
513
514 case ARG_SHOW_CURSOR:
515 arg_show_cursor = true;
516 break;
517
518 case ARG_HEADER:
519 arg_action = ACTION_PRINT_HEADER;
520 break;
521
522 case ARG_VERIFY:
523 arg_action = ACTION_VERIFY;
524 break;
525
526 case ARG_DISK_USAGE:
527 arg_action = ACTION_DISK_USAGE;
528 break;
529
530 case ARG_VACUUM_SIZE:
531 r = parse_size(optarg, 1024, &arg_vacuum_size);
532 if (r < 0) {
533 log_error("Failed to parse vacuum size: %s", optarg);
534 return r;
535 }
536
537 arg_action = ACTION_VACUUM;
538 break;
539
540 case ARG_VACUUM_TIME:
541 r = parse_sec(optarg, &arg_vacuum_time);
542 if (r < 0) {
543 log_error("Failed to parse vacuum time: %s", optarg);
544 return r;
545 }
546
547 arg_action = ACTION_VACUUM;
548 break;
549
550 #ifdef HAVE_GCRYPT
551 case ARG_FORCE:
552 arg_force = true;
553 break;
554
555 case ARG_SETUP_KEYS:
556 arg_action = ACTION_SETUP_KEYS;
557 break;
558
559
560 case ARG_VERIFY_KEY:
561 arg_action = ACTION_VERIFY;
562 arg_verify_key = optarg;
563 arg_merge = false;
564 break;
565
566 case ARG_INTERVAL:
567 r = parse_sec(optarg, &arg_interval);
568 if (r < 0 || arg_interval <= 0) {
569 log_error("Failed to parse sealing key change interval: %s", optarg);
570 return -EINVAL;
571 }
572 break;
573 #else
574 case ARG_SETUP_KEYS:
575 case ARG_VERIFY_KEY:
576 case ARG_INTERVAL:
577 case ARG_FORCE:
578 log_error("Forward-secure sealing not available.");
579 return -EOPNOTSUPP;
580 #endif
581
582 case 'p': {
583 const char *dots;
584
585 dots = strstr(optarg, "..");
586 if (dots) {
587 char *a;
588 int from, to, i;
589
590 /* a range */
591 a = strndup(optarg, dots - optarg);
592 if (!a)
593 return log_oom();
594
595 from = log_level_from_string(a);
596 to = log_level_from_string(dots + 2);
597 free(a);
598
599 if (from < 0 || to < 0) {
600 log_error("Failed to parse log level range %s", optarg);
601 return -EINVAL;
602 }
603
604 arg_priorities = 0;
605
606 if (from < to) {
607 for (i = from; i <= to; i++)
608 arg_priorities |= 1 << i;
609 } else {
610 for (i = to; i <= from; i++)
611 arg_priorities |= 1 << i;
612 }
613
614 } else {
615 int p, i;
616
617 p = log_level_from_string(optarg);
618 if (p < 0) {
619 log_error("Unknown log level %s", optarg);
620 return -EINVAL;
621 }
622
623 arg_priorities = 0;
624
625 for (i = 0; i <= p; i++)
626 arg_priorities |= 1 << i;
627 }
628
629 break;
630 }
631
632 case ARG_SINCE:
633 r = parse_timestamp(optarg, &arg_since);
634 if (r < 0) {
635 log_error("Failed to parse timestamp: %s", optarg);
636 return -EINVAL;
637 }
638 arg_since_set = true;
639 break;
640
641 case ARG_UNTIL:
642 r = parse_timestamp(optarg, &arg_until);
643 if (r < 0) {
644 log_error("Failed to parse timestamp: %s", optarg);
645 return -EINVAL;
646 }
647 arg_until_set = true;
648 break;
649
650 case 't':
651 r = strv_extend(&arg_syslog_identifier, optarg);
652 if (r < 0)
653 return log_oom();
654 break;
655
656 case 'u':
657 r = strv_extend(&arg_system_units, optarg);
658 if (r < 0)
659 return log_oom();
660 break;
661
662 case ARG_USER_UNIT:
663 r = strv_extend(&arg_user_units, optarg);
664 if (r < 0)
665 return log_oom();
666 break;
667
668 case 'F':
669 arg_field = optarg;
670 break;
671
672 case 'x':
673 arg_catalog = true;
674 break;
675
676 case ARG_LIST_CATALOG:
677 arg_action = ACTION_LIST_CATALOG;
678 break;
679
680 case ARG_DUMP_CATALOG:
681 arg_action = ACTION_DUMP_CATALOG;
682 break;
683
684 case ARG_UPDATE_CATALOG:
685 arg_action = ACTION_UPDATE_CATALOG;
686 break;
687
688 case 'r':
689 arg_reverse = true;
690 break;
691
692 case ARG_UTC:
693 arg_utc = true;
694 break;
695
696 case ARG_FLUSH:
697 arg_action = ACTION_FLUSH;
698 break;
699
700 case '?':
701 return -EINVAL;
702
703 default:
704 assert_not_reached("Unhandled option");
705 }
706
707 if (arg_follow && !arg_no_tail && !arg_since && arg_lines == ARG_LINES_DEFAULT)
708 arg_lines = 10;
709
710 if (!!arg_directory + !!arg_file + !!arg_machine > 1) {
711 log_error("Please specify either -D/--directory= or --file= or -M/--machine=, not more than one.");
712 return -EINVAL;
713 }
714
715 if (arg_since_set && arg_until_set && arg_since > arg_until) {
716 log_error("--since= must be before --until=.");
717 return -EINVAL;
718 }
719
720 if (!!arg_cursor + !!arg_after_cursor + !!arg_since_set > 1) {
721 log_error("Please specify only one of --since=, --cursor=, and --after-cursor.");
722 return -EINVAL;
723 }
724
725 if (arg_follow && arg_reverse) {
726 log_error("Please specify either --reverse= or --follow=, not both.");
727 return -EINVAL;
728 }
729
730 if (arg_action != ACTION_SHOW && optind < argc) {
731 log_error("Extraneous arguments starting with '%s'", argv[optind]);
732 return -EINVAL;
733 }
734
735 return 1;
736 }
737
738 static int generate_new_id128(void) {
739 sd_id128_t id;
740 int r;
741 unsigned i;
742
743 r = sd_id128_randomize(&id);
744 if (r < 0)
745 return log_error_errno(r, "Failed to generate ID: %m");
746
747 printf("As string:\n"
748 SD_ID128_FORMAT_STR "\n\n"
749 "As UUID:\n"
750 "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n\n"
751 "As macro:\n"
752 "#define MESSAGE_XYZ SD_ID128_MAKE(",
753 SD_ID128_FORMAT_VAL(id),
754 SD_ID128_FORMAT_VAL(id));
755 for (i = 0; i < 16; i++)
756 printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
757 fputs(")\n\n", stdout);
758
759 printf("As Python constant:\n"
760 ">>> import uuid\n"
761 ">>> MESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')\n",
762 SD_ID128_FORMAT_VAL(id));
763
764 return 0;
765 }
766
767 static int add_matches(sd_journal *j, char **args) {
768 char **i;
769 bool have_term = false;
770
771 assert(j);
772
773 STRV_FOREACH(i, args) {
774 int r;
775
776 if (streq(*i, "+")) {
777 if (!have_term)
778 break;
779 r = sd_journal_add_disjunction(j);
780 have_term = false;
781
782 } else if (path_is_absolute(*i)) {
783 _cleanup_free_ char *p, *t = NULL, *t2 = NULL;
784 const char *path;
785 _cleanup_free_ char *interpreter = NULL;
786 struct stat st;
787
788 p = canonicalize_file_name(*i);
789 path = p ? p : *i;
790
791 if (stat(path, &st) < 0)
792 return log_error_errno(errno, "Couldn't stat file: %m");
793
794 if (S_ISREG(st.st_mode) && (0111 & st.st_mode)) {
795 if (executable_is_script(path, &interpreter) > 0) {
796 _cleanup_free_ char *comm;
797
798 comm = strndup(basename(path), 15);
799 if (!comm)
800 return log_oom();
801
802 t = strappend("_COMM=", comm);
803
804 /* Append _EXE only if the interpreter is not a link.
805 Otherwise, it might be outdated often. */
806 if (lstat(interpreter, &st) == 0 &&
807 !S_ISLNK(st.st_mode)) {
808 t2 = strappend("_EXE=", interpreter);
809 if (!t2)
810 return log_oom();
811 }
812 } else
813 t = strappend("_EXE=", path);
814 } else if (S_ISCHR(st.st_mode)) {
815 if (asprintf(&t, "_KERNEL_DEVICE=c%u:%u",
816 major(st.st_rdev),
817 minor(st.st_rdev)) < 0)
818 return -ENOMEM;
819 } else if (S_ISBLK(st.st_mode)) {
820 if (asprintf(&t, "_KERNEL_DEVICE=b%u:%u",
821 major(st.st_rdev),
822 minor(st.st_rdev)) < 0)
823 return -ENOMEM;
824 } else {
825 log_error("File is neither a device node, nor regular file, nor executable: %s", *i);
826 return -EINVAL;
827 }
828
829 if (!t)
830 return log_oom();
831
832 r = sd_journal_add_match(j, t, 0);
833 if (t2)
834 r = sd_journal_add_match(j, t2, 0);
835 have_term = true;
836
837 } else {
838 r = sd_journal_add_match(j, *i, 0);
839 have_term = true;
840 }
841
842 if (r < 0)
843 return log_error_errno(r, "Failed to add match '%s': %m", *i);
844 }
845
846 if (!strv_isempty(args) && !have_term) {
847 log_error("\"+\" can only be used between terms");
848 return -EINVAL;
849 }
850
851 return 0;
852 }
853
854 static int boot_id_cmp(const void *a, const void *b) {
855 uint64_t _a, _b;
856
857 _a = ((const boot_id_t *)a)->first;
858 _b = ((const boot_id_t *)b)->first;
859
860 return _a < _b ? -1 : (_a > _b ? 1 : 0);
861 }
862
863 static int get_boots(sd_journal *j,
864 boot_id_t **boots,
865 unsigned int *count,
866 boot_id_t *query_ref_boot) {
867 int r;
868 const void *data;
869 size_t length, allocated = 0;
870
871 assert(j);
872 assert(boots);
873 assert(count);
874
875 r = sd_journal_query_unique(j, "_BOOT_ID");
876 if (r < 0)
877 return r;
878
879 *count = 0;
880 SD_JOURNAL_FOREACH_UNIQUE(j, data, length) {
881 boot_id_t *id;
882
883 assert(startswith(data, "_BOOT_ID="));
884
885 if (!GREEDY_REALLOC(*boots, allocated, *count + 1))
886 return log_oom();
887
888 id = *boots + *count;
889
890 r = sd_id128_from_string(((const char *)data) + strlen("_BOOT_ID="), &id->id);
891 if (r < 0)
892 continue;
893
894 r = sd_journal_add_match(j, data, length);
895 if (r < 0)
896 return r;
897
898 r = sd_journal_seek_head(j);
899 if (r < 0)
900 return r;
901
902 r = sd_journal_next(j);
903 if (r < 0)
904 return r;
905 else if (r == 0)
906 goto flush;
907
908 r = sd_journal_get_realtime_usec(j, &id->first);
909 if (r < 0)
910 return r;
911
912 if (query_ref_boot) {
913 id->last = 0;
914 if (sd_id128_equal(id->id, query_ref_boot->id))
915 *query_ref_boot = *id;
916 } else {
917 r = sd_journal_seek_tail(j);
918 if (r < 0)
919 return r;
920
921 r = sd_journal_previous(j);
922 if (r < 0)
923 return r;
924 else if (r == 0)
925 goto flush;
926
927 r = sd_journal_get_realtime_usec(j, &id->last);
928 if (r < 0)
929 return r;
930 }
931
932 (*count)++;
933 flush:
934 sd_journal_flush_matches(j);
935 }
936
937 qsort_safe(*boots, *count, sizeof(boot_id_t), boot_id_cmp);
938 return 0;
939 }
940
941 static int list_boots(sd_journal *j) {
942 int r, w, i;
943 unsigned int count;
944 boot_id_t *id;
945 _cleanup_free_ boot_id_t *all_ids = NULL;
946
947 assert(j);
948
949 r = get_boots(j, &all_ids, &count, NULL);
950 if (r < 0)
951 return r;
952
953 pager_open_if_enabled();
954
955 /* numbers are one less, but we need an extra char for the sign */
956 w = DECIMAL_STR_WIDTH(count - 1) + 1;
957
958 for (id = all_ids, i = 0; id < all_ids + count; id++, i++) {
959 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX];
960
961 printf("% *i " SD_ID128_FORMAT_STR " %s—%s\n",
962 w, i - count + 1,
963 SD_ID128_FORMAT_VAL(id->id),
964 format_timestamp_maybe_utc(a, sizeof(a), id->first),
965 format_timestamp_maybe_utc(b, sizeof(b), id->last));
966 }
967
968 return 0;
969 }
970
971 static int get_boot_id_by_offset(sd_journal *j, sd_id128_t *boot_id, int offset) {
972 int r;
973 unsigned int count;
974 boot_id_t ref_boot_id = {}, *id;
975 _cleanup_free_ boot_id_t *all_ids = NULL;
976
977 assert(j);
978 assert(boot_id);
979
980 ref_boot_id.id = *boot_id;
981 r = get_boots(j, &all_ids, &count, &ref_boot_id);
982 if (r < 0)
983 return r;
984
985 if (sd_id128_equal(*boot_id, SD_ID128_NULL)) {
986 if (offset > (int) count || offset <= -(int)count)
987 return -EADDRNOTAVAIL;
988
989 *boot_id = all_ids[(offset <= 0)*count + offset - 1].id;
990 } else {
991 id = bsearch(&ref_boot_id, all_ids, count, sizeof(boot_id_t), boot_id_cmp);
992
993 if (!id ||
994 offset <= 0 ? (id - all_ids) + offset < 0 :
995 (id - all_ids) + offset >= (int) count)
996 return -EADDRNOTAVAIL;
997
998 *boot_id = (id + offset)->id;
999 }
1000
1001 return 0;
1002 }
1003
1004 static int add_boot(sd_journal *j) {
1005 char match[9+32+1] = "_BOOT_ID=";
1006 int r;
1007
1008 assert(j);
1009
1010 if (!arg_boot)
1011 return 0;
1012
1013 if (arg_boot_offset == 0 && sd_id128_equal(arg_boot_id, SD_ID128_NULL))
1014 return add_match_this_boot(j, arg_machine);
1015
1016 r = get_boot_id_by_offset(j, &arg_boot_id, arg_boot_offset);
1017 if (r < 0) {
1018 if (sd_id128_equal(arg_boot_id, SD_ID128_NULL))
1019 log_error_errno(r, "Failed to look up boot %+i: %m", arg_boot_offset);
1020 else
1021 log_error("Failed to look up boot ID "SD_ID128_FORMAT_STR"%+i: %s",
1022 SD_ID128_FORMAT_VAL(arg_boot_id), arg_boot_offset, strerror(-r));
1023 return r;
1024 }
1025
1026 sd_id128_to_string(arg_boot_id, match + 9);
1027
1028 r = sd_journal_add_match(j, match, sizeof(match) - 1);
1029 if (r < 0)
1030 return log_error_errno(r, "Failed to add match: %m");
1031
1032 r = sd_journal_add_conjunction(j);
1033 if (r < 0)
1034 return r;
1035
1036 return 0;
1037 }
1038
1039 static int add_dmesg(sd_journal *j) {
1040 int r;
1041 assert(j);
1042
1043 if (!arg_dmesg)
1044 return 0;
1045
1046 r = sd_journal_add_match(j, "_TRANSPORT=kernel", strlen("_TRANSPORT=kernel"));
1047 if (r < 0)
1048 return log_error_errno(r, "Failed to add match: %m");
1049
1050 r = sd_journal_add_conjunction(j);
1051 if (r < 0)
1052 return r;
1053
1054 return 0;
1055 }
1056
1057 static int get_possible_units(sd_journal *j,
1058 const char *fields,
1059 char **patterns,
1060 Set **units) {
1061 _cleanup_set_free_free_ Set *found;
1062 const char *field;
1063 int r;
1064
1065 found = set_new(&string_hash_ops);
1066 if (!found)
1067 return log_oom();
1068
1069 NULSTR_FOREACH(field, fields) {
1070 const void *data;
1071 size_t size;
1072
1073 r = sd_journal_query_unique(j, field);
1074 if (r < 0)
1075 return r;
1076
1077 SD_JOURNAL_FOREACH_UNIQUE(j, data, size) {
1078 char **pattern, *eq;
1079 size_t prefix;
1080 _cleanup_free_ char *u = NULL;
1081
1082 eq = memchr(data, '=', size);
1083 if (eq)
1084 prefix = eq - (char*) data + 1;
1085 else
1086 prefix = 0;
1087
1088 u = strndup((char*) data + prefix, size - prefix);
1089 if (!u)
1090 return log_oom();
1091
1092 STRV_FOREACH(pattern, patterns)
1093 if (fnmatch(*pattern, u, FNM_NOESCAPE) == 0) {
1094 log_debug("Matched %s with pattern %s=%s", u, field, *pattern);
1095
1096 r = set_consume(found, u);
1097 u = NULL;
1098 if (r < 0 && r != -EEXIST)
1099 return r;
1100
1101 break;
1102 }
1103 }
1104 }
1105
1106 *units = found;
1107 found = NULL;
1108 return 0;
1109 }
1110
1111 /* This list is supposed to return the superset of unit names
1112 * possibly matched by rules added with add_matches_for_unit... */
1113 #define SYSTEM_UNITS \
1114 "_SYSTEMD_UNIT\0" \
1115 "COREDUMP_UNIT\0" \
1116 "UNIT\0" \
1117 "OBJECT_SYSTEMD_UNIT\0" \
1118 "_SYSTEMD_SLICE\0"
1119
1120 /* ... and add_matches_for_user_unit */
1121 #define USER_UNITS \
1122 "_SYSTEMD_USER_UNIT\0" \
1123 "USER_UNIT\0" \
1124 "COREDUMP_USER_UNIT\0" \
1125 "OBJECT_SYSTEMD_USER_UNIT\0"
1126
1127 static int add_units(sd_journal *j) {
1128 _cleanup_strv_free_ char **patterns = NULL;
1129 int r, count = 0;
1130 char **i;
1131
1132 assert(j);
1133
1134 STRV_FOREACH(i, arg_system_units) {
1135 _cleanup_free_ char *u = NULL;
1136
1137 u = unit_name_mangle(*i, MANGLE_GLOB);
1138 if (!u)
1139 return log_oom();
1140
1141 if (string_is_glob(u)) {
1142 r = strv_push(&patterns, u);
1143 if (r < 0)
1144 return r;
1145 u = NULL;
1146 } else {
1147 r = add_matches_for_unit(j, u);
1148 if (r < 0)
1149 return r;
1150 r = sd_journal_add_disjunction(j);
1151 if (r < 0)
1152 return r;
1153 count ++;
1154 }
1155 }
1156
1157 if (!strv_isempty(patterns)) {
1158 _cleanup_set_free_free_ Set *units = NULL;
1159 Iterator it;
1160 char *u;
1161
1162 r = get_possible_units(j, SYSTEM_UNITS, patterns, &units);
1163 if (r < 0)
1164 return r;
1165
1166 SET_FOREACH(u, units, it) {
1167 r = add_matches_for_unit(j, u);
1168 if (r < 0)
1169 return r;
1170 r = sd_journal_add_disjunction(j);
1171 if (r < 0)
1172 return r;
1173 count ++;
1174 }
1175 }
1176
1177 strv_free(patterns);
1178 patterns = NULL;
1179
1180 STRV_FOREACH(i, arg_user_units) {
1181 _cleanup_free_ char *u = NULL;
1182
1183 u = unit_name_mangle(*i, MANGLE_GLOB);
1184 if (!u)
1185 return log_oom();
1186
1187 if (string_is_glob(u)) {
1188 r = strv_push(&patterns, u);
1189 if (r < 0)
1190 return r;
1191 u = NULL;
1192 } else {
1193 r = add_matches_for_user_unit(j, u, getuid());
1194 if (r < 0)
1195 return r;
1196 r = sd_journal_add_disjunction(j);
1197 if (r < 0)
1198 return r;
1199 count ++;
1200 }
1201 }
1202
1203 if (!strv_isempty(patterns)) {
1204 _cleanup_set_free_free_ Set *units = NULL;
1205 Iterator it;
1206 char *u;
1207
1208 r = get_possible_units(j, USER_UNITS, patterns, &units);
1209 if (r < 0)
1210 return r;
1211
1212 SET_FOREACH(u, units, it) {
1213 r = add_matches_for_user_unit(j, u, getuid());
1214 if (r < 0)
1215 return r;
1216 r = sd_journal_add_disjunction(j);
1217 if (r < 0)
1218 return r;
1219 count ++;
1220 }
1221 }
1222
1223 /* Complain if the user request matches but nothing whatsoever was
1224 * found, since otherwise everything would be matched. */
1225 if (!(strv_isempty(arg_system_units) && strv_isempty(arg_user_units)) && count == 0)
1226 return -ENODATA;
1227
1228 r = sd_journal_add_conjunction(j);
1229 if (r < 0)
1230 return r;
1231
1232 return 0;
1233 }
1234
1235 static int add_priorities(sd_journal *j) {
1236 char match[] = "PRIORITY=0";
1237 int i, r;
1238 assert(j);
1239
1240 if (arg_priorities == 0xFF)
1241 return 0;
1242
1243 for (i = LOG_EMERG; i <= LOG_DEBUG; i++)
1244 if (arg_priorities & (1 << i)) {
1245 match[sizeof(match)-2] = '0' + i;
1246
1247 r = sd_journal_add_match(j, match, strlen(match));
1248 if (r < 0)
1249 return log_error_errno(r, "Failed to add match: %m");
1250 }
1251
1252 r = sd_journal_add_conjunction(j);
1253 if (r < 0)
1254 return r;
1255
1256 return 0;
1257 }
1258
1259
1260 static int add_syslog_identifier(sd_journal *j) {
1261 int r;
1262 char **i;
1263
1264 assert(j);
1265
1266 STRV_FOREACH(i, arg_syslog_identifier) {
1267 char *u;
1268
1269 u = strjoina("SYSLOG_IDENTIFIER=", *i);
1270 r = sd_journal_add_match(j, u, 0);
1271 if (r < 0)
1272 return r;
1273 r = sd_journal_add_disjunction(j);
1274 if (r < 0)
1275 return r;
1276 }
1277
1278 r = sd_journal_add_conjunction(j);
1279 if (r < 0)
1280 return r;
1281
1282 return 0;
1283 }
1284
1285 static int setup_keys(void) {
1286 #ifdef HAVE_GCRYPT
1287 size_t mpk_size, seed_size, state_size, i;
1288 uint8_t *mpk, *seed, *state;
1289 int fd = -1, r;
1290 sd_id128_t machine, boot;
1291 char *p = NULL, *k = NULL;
1292 struct FSSHeader h;
1293 uint64_t n;
1294 struct stat st;
1295
1296 r = stat("/var/log/journal", &st);
1297 if (r < 0 && errno != ENOENT && errno != ENOTDIR)
1298 return log_error_errno(errno, "stat(\"%s\") failed: %m", "/var/log/journal");
1299
1300 if (r < 0 || !S_ISDIR(st.st_mode)) {
1301 log_error("%s is not a directory, must be using persistent logging for FSS.",
1302 "/var/log/journal");
1303 return r < 0 ? -errno : -ENOTDIR;
1304 }
1305
1306 r = sd_id128_get_machine(&machine);
1307 if (r < 0)
1308 return log_error_errno(r, "Failed to get machine ID: %m");
1309
1310 r = sd_id128_get_boot(&boot);
1311 if (r < 0)
1312 return log_error_errno(r, "Failed to get boot ID: %m");
1313
1314 if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss",
1315 SD_ID128_FORMAT_VAL(machine)) < 0)
1316 return log_oom();
1317
1318 if (arg_force) {
1319 r = unlink(p);
1320 if (r < 0 && errno != ENOENT) {
1321 r = log_error_errno(errno, "unlink(\"%s\") failed: %m", p);
1322 goto finish;
1323 }
1324 } else if (access(p, F_OK) >= 0) {
1325 log_error("Sealing key file %s exists already. Use --force to recreate.", p);
1326 r = -EEXIST;
1327 goto finish;
1328 }
1329
1330 if (asprintf(&k, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss.tmp.XXXXXX",
1331 SD_ID128_FORMAT_VAL(machine)) < 0) {
1332 r = log_oom();
1333 goto finish;
1334 }
1335
1336 mpk_size = FSPRG_mskinbytes(FSPRG_RECOMMENDED_SECPAR);
1337 mpk = alloca(mpk_size);
1338
1339 seed_size = FSPRG_RECOMMENDED_SEEDLEN;
1340 seed = alloca(seed_size);
1341
1342 state_size = FSPRG_stateinbytes(FSPRG_RECOMMENDED_SECPAR);
1343 state = alloca(state_size);
1344
1345 fd = open("/dev/random", O_RDONLY|O_CLOEXEC|O_NOCTTY);
1346 if (fd < 0) {
1347 log_error_errno(errno, "Failed to open /dev/random: %m");
1348 r = -errno;
1349 goto finish;
1350 }
1351
1352 log_info("Generating seed...");
1353 r = loop_read_exact(fd, seed, seed_size, true);
1354 if (r < 0) {
1355 log_error_errno(r, "Failed to read random seed: %m");
1356 goto finish;
1357 }
1358
1359 log_info("Generating key pair...");
1360 FSPRG_GenMK(NULL, mpk, seed, seed_size, FSPRG_RECOMMENDED_SECPAR);
1361
1362 log_info("Generating sealing key...");
1363 FSPRG_GenState0(state, mpk, seed, seed_size);
1364
1365 assert(arg_interval > 0);
1366
1367 n = now(CLOCK_REALTIME);
1368 n /= arg_interval;
1369
1370 safe_close(fd);
1371 fd = mkostemp_safe(k, O_WRONLY|O_CLOEXEC);
1372 if (fd < 0) {
1373 log_error_errno(errno, "Failed to open %s: %m", k);
1374 r = -errno;
1375 goto finish;
1376 }
1377
1378 /* Enable secure remove, exclusion from dump, synchronous
1379 * writing and in-place updating */
1380 r = chattr_fd(fd, true, FS_SECRM_FL|FS_NODUMP_FL|FS_SYNC_FL|FS_NOCOW_FL);
1381 if (r < 0)
1382 log_warning_errno(errno, "Failed to set file attributes: %m");
1383
1384 zero(h);
1385 memcpy(h.signature, "KSHHRHLP", 8);
1386 h.machine_id = machine;
1387 h.boot_id = boot;
1388 h.header_size = htole64(sizeof(h));
1389 h.start_usec = htole64(n * arg_interval);
1390 h.interval_usec = htole64(arg_interval);
1391 h.fsprg_secpar = htole16(FSPRG_RECOMMENDED_SECPAR);
1392 h.fsprg_state_size = htole64(state_size);
1393
1394 r = loop_write(fd, &h, sizeof(h), false);
1395 if (r < 0) {
1396 log_error_errno(r, "Failed to write header: %m");
1397 goto finish;
1398 }
1399
1400 r = loop_write(fd, state, state_size, false);
1401 if (r < 0) {
1402 log_error_errno(r, "Failed to write state: %m");
1403 goto finish;
1404 }
1405
1406 if (link(k, p) < 0) {
1407 log_error_errno(errno, "Failed to link file: %m");
1408 r = -errno;
1409 goto finish;
1410 }
1411
1412 if (on_tty()) {
1413 fprintf(stderr,
1414 "\n"
1415 "The new key pair has been generated. The " ANSI_HIGHLIGHT_ON "secret sealing key" ANSI_HIGHLIGHT_OFF " has been written to\n"
1416 "the following local file. This key file is automatically updated when the\n"
1417 "sealing key is advanced. It should not be used on multiple hosts.\n"
1418 "\n"
1419 "\t%s\n"
1420 "\n"
1421 "Please write down the following " ANSI_HIGHLIGHT_ON "secret verification key" ANSI_HIGHLIGHT_OFF ". It should be stored\n"
1422 "at a safe location and should not be saved locally on disk.\n"
1423 "\n\t" ANSI_HIGHLIGHT_RED_ON, p);
1424 fflush(stderr);
1425 }
1426 for (i = 0; i < seed_size; i++) {
1427 if (i > 0 && i % 3 == 0)
1428 putchar('-');
1429 printf("%02x", ((uint8_t*) seed)[i]);
1430 }
1431
1432 printf("/%llx-%llx\n", (unsigned long long) n, (unsigned long long) arg_interval);
1433
1434 if (on_tty()) {
1435 char tsb[FORMAT_TIMESPAN_MAX], *hn;
1436
1437 fprintf(stderr,
1438 ANSI_HIGHLIGHT_OFF "\n"
1439 "The sealing key is automatically changed every %s.\n",
1440 format_timespan(tsb, sizeof(tsb), arg_interval, 0));
1441
1442 hn = gethostname_malloc();
1443
1444 if (hn) {
1445 hostname_cleanup(hn, false);
1446 fprintf(stderr, "\nThe keys have been generated for host %s/" SD_ID128_FORMAT_STR ".\n", hn, SD_ID128_FORMAT_VAL(machine));
1447 } else
1448 fprintf(stderr, "\nThe keys have been generated for host " SD_ID128_FORMAT_STR ".\n", SD_ID128_FORMAT_VAL(machine));
1449
1450 #ifdef HAVE_QRENCODE
1451 /* If this is not an UTF-8 system don't print any QR codes */
1452 if (is_locale_utf8()) {
1453 fputs("\nTo transfer the verification key to your phone please scan the QR code below:\n\n", stderr);
1454 print_qr_code(stderr, seed, seed_size, n, arg_interval, hn, machine);
1455 }
1456 #endif
1457 free(hn);
1458 }
1459
1460 r = 0;
1461
1462 finish:
1463 safe_close(fd);
1464
1465 if (k) {
1466 unlink(k);
1467 free(k);
1468 }
1469
1470 free(p);
1471
1472 return r;
1473 #else
1474 log_error("Forward-secure sealing not available.");
1475 return -EOPNOTSUPP;
1476 #endif
1477 }
1478
1479 static int verify(sd_journal *j) {
1480 int r = 0;
1481 Iterator i;
1482 JournalFile *f;
1483
1484 assert(j);
1485
1486 log_show_color(true);
1487
1488 ORDERED_HASHMAP_FOREACH(f, j->files, i) {
1489 int k;
1490 usec_t first, validated, last;
1491
1492 #ifdef HAVE_GCRYPT
1493 if (!arg_verify_key && JOURNAL_HEADER_SEALED(f->header))
1494 log_notice("Journal file %s has sealing enabled but verification key has not been passed using --verify-key=.", f->path);
1495 #endif
1496
1497 k = journal_file_verify(f, arg_verify_key, &first, &validated, &last, true);
1498 if (k == -EINVAL) {
1499 /* If the key was invalid give up right-away. */
1500 return k;
1501 } else if (k < 0) {
1502 log_warning("FAIL: %s (%s)", f->path, strerror(-k));
1503 r = k;
1504 } else {
1505 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX], c[FORMAT_TIMESPAN_MAX];
1506 log_info("PASS: %s", f->path);
1507
1508 if (arg_verify_key && JOURNAL_HEADER_SEALED(f->header)) {
1509 if (validated > 0) {
1510 log_info("=> Validated from %s to %s, final %s entries not sealed.",
1511 format_timestamp_maybe_utc(a, sizeof(a), first),
1512 format_timestamp_maybe_utc(b, sizeof(b), validated),
1513 format_timespan(c, sizeof(c), last > validated ? last - validated : 0, 0));
1514 } else if (last > 0)
1515 log_info("=> No sealing yet, %s of entries not sealed.",
1516 format_timespan(c, sizeof(c), last - first, 0));
1517 else
1518 log_info("=> No sealing yet, no entries in file.");
1519 }
1520 }
1521 }
1522
1523 return r;
1524 }
1525
1526 #ifdef HAVE_ACL
1527 static int access_check_var_log_journal(sd_journal *j) {
1528 _cleanup_strv_free_ char **g = NULL;
1529 bool have_access;
1530 int r;
1531
1532 assert(j);
1533
1534 have_access = in_group("systemd-journal") > 0;
1535
1536 if (!have_access) {
1537 const char* dir;
1538
1539 if (access("/run/log/journal", F_OK) >= 0)
1540 dir = "/run/log/journal";
1541 else
1542 dir = "/var/log/journal";
1543
1544 /* Let's enumerate all groups from the default ACL of
1545 * the directory, which generally should allow access
1546 * to most journal files too */
1547 r = search_acl_groups(&g, dir, &have_access);
1548 if (r < 0)
1549 return r;
1550 }
1551
1552 if (!have_access) {
1553
1554 if (strv_isempty(g))
1555 log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
1556 " Users in the 'systemd-journal' group can see all messages. Pass -q to\n"
1557 " turn off this notice.");
1558 else {
1559 _cleanup_free_ char *s = NULL;
1560
1561 r = strv_extend(&g, "systemd-journal");
1562 if (r < 0)
1563 return log_oom();
1564
1565 strv_sort(g);
1566 strv_uniq(g);
1567
1568 s = strv_join(g, "', '");
1569 if (!s)
1570 return log_oom();
1571
1572 log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
1573 " Users in groups '%s' can see all messages.\n"
1574 " Pass -q to turn off this notice.", s);
1575 }
1576 }
1577
1578 return 0;
1579 }
1580 #endif
1581
1582 static int access_check(sd_journal *j) {
1583 Iterator it;
1584 void *code;
1585 int r = 0;
1586
1587 assert(j);
1588
1589 if (set_isempty(j->errors)) {
1590 if (ordered_hashmap_isempty(j->files))
1591 log_notice("No journal files were found.");
1592 return 0;
1593 }
1594
1595 if (set_contains(j->errors, INT_TO_PTR(-EACCES))) {
1596 #ifdef HAVE_ACL
1597 /* If /run/log/journal or /var/log/journal exist, try
1598 to pring a nice notice if the user lacks access to it. */
1599 if (!arg_quiet && geteuid() != 0) {
1600 r = access_check_var_log_journal(j);
1601 if (r < 0)
1602 return r;
1603 }
1604 #else
1605 if (geteuid() != 0 && in_group("systemd-journal") <= 0) {
1606 log_error("Unprivileged users cannot access messages. Users in the 'systemd-journal' group\n"
1607 "group may access messages.");
1608 return -EACCES;
1609 }
1610 #endif
1611
1612 if (ordered_hashmap_isempty(j->files)) {
1613 log_error("No journal files were opened due to insufficient permissions.");
1614 r = -EACCES;
1615 }
1616 }
1617
1618 SET_FOREACH(code, j->errors, it) {
1619 int err;
1620
1621 err = -PTR_TO_INT(code);
1622 assert(err > 0);
1623
1624 if (err != EACCES)
1625 log_warning_errno(err, "Error was encountered while opening journal files: %m");
1626 }
1627
1628 return r;
1629 }
1630
1631 static int flush_to_var(void) {
1632 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1633 _cleanup_bus_close_unref_ sd_bus *bus = NULL;
1634 _cleanup_close_ int watch_fd = -1;
1635 int r;
1636
1637 /* Quick exit */
1638 if (access("/run/systemd/journal/flushed", F_OK) >= 0)
1639 return 0;
1640
1641 /* OK, let's actually do the full logic, send SIGUSR1 to the
1642 * daemon and set up inotify to wait for the flushed file to appear */
1643 r = bus_open_system_systemd(&bus);
1644 if (r < 0)
1645 return log_error_errno(r, "Failed to get D-Bus connection: %m");
1646
1647 r = sd_bus_call_method(
1648 bus,
1649 "org.freedesktop.systemd1",
1650 "/org/freedesktop/systemd1",
1651 "org.freedesktop.systemd1.Manager",
1652 "KillUnit",
1653 &error,
1654 NULL,
1655 "ssi", "systemd-journald.service", "main", SIGUSR1);
1656 if (r < 0) {
1657 log_error("Failed to kill journal service: %s", bus_error_message(&error, r));
1658 return r;
1659 }
1660
1661 mkdir_p("/run/systemd/journal", 0755);
1662
1663 watch_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
1664 if (watch_fd < 0)
1665 return log_error_errno(errno, "Failed to create inotify watch: %m");
1666
1667 r = inotify_add_watch(watch_fd, "/run/systemd/journal", IN_CREATE|IN_DONT_FOLLOW|IN_ONLYDIR);
1668 if (r < 0)
1669 return log_error_errno(errno, "Failed to watch journal directory: %m");
1670
1671 for (;;) {
1672 if (access("/run/systemd/journal/flushed", F_OK) >= 0)
1673 break;
1674
1675 if (errno != ENOENT)
1676 return log_error_errno(errno, "Failed to check for existence of /run/systemd/journal/flushed: %m");
1677
1678 r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY);
1679 if (r < 0)
1680 return log_error_errno(r, "Failed to wait for event: %m");
1681
1682 r = flush_fd(watch_fd);
1683 if (r < 0)
1684 return log_error_errno(r, "Failed to flush inotify events: %m");
1685 }
1686
1687 return 0;
1688 }
1689
1690 int main(int argc, char *argv[]) {
1691 int r;
1692 _cleanup_journal_close_ sd_journal *j = NULL;
1693 bool need_seek = false;
1694 sd_id128_t previous_boot_id;
1695 bool previous_boot_id_valid = false, first_line = true;
1696 int n_shown = 0;
1697 bool ellipsized = false;
1698
1699 setlocale(LC_ALL, "");
1700 log_parse_environment();
1701 log_open();
1702
1703 r = parse_argv(argc, argv);
1704 if (r <= 0)
1705 goto finish;
1706
1707 signal(SIGWINCH, columns_lines_cache_reset);
1708 sigbus_install();
1709
1710 /* Increase max number of open files to 16K if we can, we
1711 * might needs this when browsing journal files, which might
1712 * be split up into many files. */
1713 setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(16384));
1714
1715 if (arg_action == ACTION_NEW_ID128) {
1716 r = generate_new_id128();
1717 goto finish;
1718 }
1719
1720 if (arg_action == ACTION_FLUSH) {
1721 r = flush_to_var();
1722 goto finish;
1723 }
1724
1725 if (arg_action == ACTION_SETUP_KEYS) {
1726 r = setup_keys();
1727 goto finish;
1728 }
1729
1730 if (arg_action == ACTION_UPDATE_CATALOG ||
1731 arg_action == ACTION_LIST_CATALOG ||
1732 arg_action == ACTION_DUMP_CATALOG) {
1733
1734 _cleanup_free_ char *database;
1735
1736 database = path_join(arg_root, CATALOG_DATABASE, NULL);
1737 if (!database) {
1738 r = log_oom();
1739 goto finish;
1740 }
1741
1742 if (arg_action == ACTION_UPDATE_CATALOG) {
1743 r = catalog_update(database, arg_root, catalog_file_dirs);
1744 if (r < 0)
1745 log_error_errno(r, "Failed to list catalog: %m");
1746 } else {
1747 bool oneline = arg_action == ACTION_LIST_CATALOG;
1748
1749 if (optind < argc)
1750 r = catalog_list_items(stdout, database,
1751 oneline, argv + optind);
1752 else
1753 r = catalog_list(stdout, database, oneline);
1754 if (r < 0)
1755 log_error_errno(r, "Failed to list catalog: %m");
1756 }
1757
1758 goto finish;
1759 }
1760
1761 if (arg_directory)
1762 r = sd_journal_open_directory(&j, arg_directory, arg_journal_type);
1763 else if (arg_file)
1764 r = sd_journal_open_files(&j, (const char**) arg_file, 0);
1765 else if (arg_machine)
1766 r = sd_journal_open_container(&j, arg_machine, 0);
1767 else
1768 r = sd_journal_open(&j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type);
1769 if (r < 0) {
1770 log_error_errno(r, "Failed to open %s: %m",
1771 arg_directory ? arg_directory : arg_file ? "files" : "journal");
1772 return EXIT_FAILURE;
1773 }
1774
1775 r = access_check(j);
1776 if (r < 0)
1777 return EXIT_FAILURE;
1778
1779 if (arg_action == ACTION_VERIFY) {
1780 r = verify(j);
1781 goto finish;
1782 }
1783
1784 if (arg_action == ACTION_PRINT_HEADER) {
1785 journal_print_header(j);
1786 return EXIT_SUCCESS;
1787 }
1788
1789 if (arg_action == ACTION_DISK_USAGE) {
1790 uint64_t bytes = 0;
1791 char sbytes[FORMAT_BYTES_MAX];
1792
1793 r = sd_journal_get_usage(j, &bytes);
1794 if (r < 0)
1795 return EXIT_FAILURE;
1796
1797 printf("Archived and active journals take up %s on disk.\n",
1798 format_bytes(sbytes, sizeof(sbytes), bytes));
1799 return EXIT_SUCCESS;
1800 }
1801
1802 if (arg_action == ACTION_VACUUM) {
1803 Directory *d;
1804 Iterator i;
1805
1806 HASHMAP_FOREACH(d, j->directories_by_path, i) {
1807 int q;
1808
1809 if (d->is_root)
1810 continue;
1811
1812 q = journal_directory_vacuum(d->path, arg_vacuum_size, arg_vacuum_time, NULL, true);
1813 if (q < 0) {
1814 log_error_errno(q, "Failed to vacuum: %m");
1815 r = q;
1816 }
1817 }
1818
1819 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1820 }
1821
1822 if (arg_action == ACTION_LIST_BOOTS) {
1823 r = list_boots(j);
1824 goto finish;
1825 }
1826
1827 /* add_boot() must be called first!
1828 * It may need to seek the journal to find parent boot IDs. */
1829 r = add_boot(j);
1830 if (r < 0)
1831 return EXIT_FAILURE;
1832
1833 r = add_dmesg(j);
1834 if (r < 0)
1835 return EXIT_FAILURE;
1836
1837 r = add_units(j);
1838 strv_free(arg_system_units);
1839 strv_free(arg_user_units);
1840
1841 if (r < 0) {
1842 log_error_errno(r, "Failed to add filter for units: %m");
1843 return EXIT_FAILURE;
1844 }
1845
1846 r = add_syslog_identifier(j);
1847 if (r < 0) {
1848 log_error_errno(r, "Failed to add filter for syslog identifiers: %m");
1849 return EXIT_FAILURE;
1850 }
1851
1852 r = add_priorities(j);
1853 if (r < 0) {
1854 log_error_errno(r, "Failed to add filter for priorities: %m");
1855 return EXIT_FAILURE;
1856 }
1857
1858 r = add_matches(j, argv + optind);
1859 if (r < 0) {
1860 log_error_errno(r, "Failed to add filters: %m");
1861 return EXIT_FAILURE;
1862 }
1863
1864 if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) {
1865 _cleanup_free_ char *filter;
1866
1867 filter = journal_make_match_string(j);
1868 log_debug("Journal filter: %s", filter);
1869 }
1870
1871 if (arg_field) {
1872 const void *data;
1873 size_t size;
1874
1875 r = sd_journal_set_data_threshold(j, 0);
1876 if (r < 0) {
1877 log_error("Failed to unset data size threshold");
1878 return EXIT_FAILURE;
1879 }
1880
1881 r = sd_journal_query_unique(j, arg_field);
1882 if (r < 0) {
1883 log_error_errno(r, "Failed to query unique data objects: %m");
1884 return EXIT_FAILURE;
1885 }
1886
1887 SD_JOURNAL_FOREACH_UNIQUE(j, data, size) {
1888 const void *eq;
1889
1890 if (arg_lines >= 0 && n_shown >= arg_lines)
1891 break;
1892
1893 eq = memchr(data, '=', size);
1894 if (eq)
1895 printf("%.*s\n", (int) (size - ((const uint8_t*) eq - (const uint8_t*) data + 1)), (const char*) eq + 1);
1896 else
1897 printf("%.*s\n", (int) size, (const char*) data);
1898
1899 n_shown ++;
1900 }
1901
1902 return EXIT_SUCCESS;
1903 }
1904
1905 /* Opening the fd now means the first sd_journal_wait() will actually wait */
1906 if (arg_follow) {
1907 r = sd_journal_get_fd(j);
1908 if (r < 0)
1909 return EXIT_FAILURE;
1910 }
1911
1912 if (arg_cursor || arg_after_cursor) {
1913 r = sd_journal_seek_cursor(j, arg_cursor ?: arg_after_cursor);
1914 if (r < 0) {
1915 log_error_errno(r, "Failed to seek to cursor: %m");
1916 return EXIT_FAILURE;
1917 }
1918 if (!arg_reverse)
1919 r = sd_journal_next_skip(j, 1 + !!arg_after_cursor);
1920 else
1921 r = sd_journal_previous_skip(j, 1 + !!arg_after_cursor);
1922
1923 if (arg_after_cursor && r < 2) {
1924 /* We couldn't find the next entry after the cursor. */
1925 if (arg_follow)
1926 need_seek = true;
1927 else
1928 arg_lines = 0;
1929 }
1930
1931 } else if (arg_since_set && !arg_reverse) {
1932 r = sd_journal_seek_realtime_usec(j, arg_since);
1933 if (r < 0) {
1934 log_error_errno(r, "Failed to seek to date: %m");
1935 return EXIT_FAILURE;
1936 }
1937 r = sd_journal_next(j);
1938
1939 } else if (arg_until_set && arg_reverse) {
1940 r = sd_journal_seek_realtime_usec(j, arg_until);
1941 if (r < 0) {
1942 log_error_errno(r, "Failed to seek to date: %m");
1943 return EXIT_FAILURE;
1944 }
1945 r = sd_journal_previous(j);
1946
1947 } else if (arg_lines >= 0) {
1948 r = sd_journal_seek_tail(j);
1949 if (r < 0) {
1950 log_error_errno(r, "Failed to seek to tail: %m");
1951 return EXIT_FAILURE;
1952 }
1953
1954 r = sd_journal_previous_skip(j, arg_lines);
1955
1956 } else if (arg_reverse) {
1957 r = sd_journal_seek_tail(j);
1958 if (r < 0) {
1959 log_error_errno(r, "Failed to seek to tail: %m");
1960 return EXIT_FAILURE;
1961 }
1962
1963 r = sd_journal_previous(j);
1964
1965 } else {
1966 r = sd_journal_seek_head(j);
1967 if (r < 0) {
1968 log_error_errno(r, "Failed to seek to head: %m");
1969 return EXIT_FAILURE;
1970 }
1971
1972 r = sd_journal_next(j);
1973 }
1974
1975 if (r < 0) {
1976 log_error_errno(r, "Failed to iterate through journal: %m");
1977 return EXIT_FAILURE;
1978 }
1979
1980 if (!arg_follow)
1981 pager_open_if_enabled();
1982
1983 if (!arg_quiet) {
1984 usec_t start, end;
1985 char start_buf[FORMAT_TIMESTAMP_MAX], end_buf[FORMAT_TIMESTAMP_MAX];
1986
1987 r = sd_journal_get_cutoff_realtime_usec(j, &start, &end);
1988 if (r < 0) {
1989 log_error_errno(r, "Failed to get cutoff: %m");
1990 goto finish;
1991 }
1992
1993 if (r > 0) {
1994 if (arg_follow)
1995 printf("-- Logs begin at %s. --\n",
1996 format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start));
1997 else
1998 printf("-- Logs begin at %s, end at %s. --\n",
1999 format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start),
2000 format_timestamp_maybe_utc(end_buf, sizeof(end_buf), end));
2001 }
2002 }
2003
2004 for (;;) {
2005 while (arg_lines < 0 || n_shown < arg_lines || (arg_follow && !first_line)) {
2006 int flags;
2007
2008 if (need_seek) {
2009 if (!arg_reverse)
2010 r = sd_journal_next(j);
2011 else
2012 r = sd_journal_previous(j);
2013 if (r < 0) {
2014 log_error_errno(r, "Failed to iterate through journal: %m");
2015 goto finish;
2016 }
2017 if (r == 0)
2018 break;
2019 }
2020
2021 if (arg_until_set && !arg_reverse) {
2022 usec_t usec;
2023
2024 r = sd_journal_get_realtime_usec(j, &usec);
2025 if (r < 0) {
2026 log_error_errno(r, "Failed to determine timestamp: %m");
2027 goto finish;
2028 }
2029 if (usec > arg_until)
2030 goto finish;
2031 }
2032
2033 if (arg_since_set && arg_reverse) {
2034 usec_t usec;
2035
2036 r = sd_journal_get_realtime_usec(j, &usec);
2037 if (r < 0) {
2038 log_error_errno(r, "Failed to determine timestamp: %m");
2039 goto finish;
2040 }
2041 if (usec < arg_since)
2042 goto finish;
2043 }
2044
2045 if (!arg_merge && !arg_quiet) {
2046 sd_id128_t boot_id;
2047
2048 r = sd_journal_get_monotonic_usec(j, NULL, &boot_id);
2049 if (r >= 0) {
2050 if (previous_boot_id_valid &&
2051 !sd_id128_equal(boot_id, previous_boot_id))
2052 printf("%s-- Reboot --%s\n",
2053 ansi_highlight(), ansi_highlight_off());
2054
2055 previous_boot_id = boot_id;
2056 previous_boot_id_valid = true;
2057 }
2058 }
2059
2060 flags =
2061 arg_all * OUTPUT_SHOW_ALL |
2062 arg_full * OUTPUT_FULL_WIDTH |
2063 on_tty() * OUTPUT_COLOR |
2064 arg_catalog * OUTPUT_CATALOG |
2065 arg_utc * OUTPUT_UTC;
2066
2067 r = output_journal(stdout, j, arg_output, 0, flags, &ellipsized);
2068 need_seek = true;
2069 if (r == -EADDRNOTAVAIL)
2070 break;
2071 else if (r < 0 || ferror(stdout))
2072 goto finish;
2073
2074 n_shown++;
2075 }
2076
2077 if (!arg_follow) {
2078 if (arg_show_cursor) {
2079 _cleanup_free_ char *cursor = NULL;
2080
2081 r = sd_journal_get_cursor(j, &cursor);
2082 if (r < 0 && r != -EADDRNOTAVAIL)
2083 log_error_errno(r, "Failed to get cursor: %m");
2084 else if (r >= 0)
2085 printf("-- cursor: %s\n", cursor);
2086 }
2087
2088 break;
2089 }
2090
2091 r = sd_journal_wait(j, (uint64_t) -1);
2092 if (r < 0) {
2093 log_error_errno(r, "Couldn't wait for journal event: %m");
2094 goto finish;
2095 }
2096
2097 first_line = false;
2098 }
2099
2100 finish:
2101 pager_close();
2102
2103 strv_free(arg_file);
2104
2105 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
2106 }
Unnamed repository; edit this file 'description' to name the repository.