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sd-journal: minor simplification
[thirdparty/systemd.git] / src / journal / journalctl.c
CommitLineData
87d2c1ff
LP		 1/***
2 This file is part of systemd.
3
4 Copyright 2011 Lennart Poettering
5
6 systemd is free software; you can redistribute it and/or modify it
5430f7f2
LP		 7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
87d2c1ff
LP		 9 (at your option) any later version.
10
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5430f7f2 14 Lesser General Public License for more details.
87d2c1ff 15
5430f7f2 16 You should have received a copy of the GNU Lesser General Public License
87d2c1ff
LP		 17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
18***/
19
3f6fd1ba 20#include <errno.h>
87d2c1ff 21#include <fcntl.h>
ea18a4b5 22#include <fnmatch.h>
3f6fd1ba
LP		 23#include <getopt.h>
24#include <linux/fs.h>
25#include <locale.h>
26#include <poll.h>
27#include <signal.h>
87d2c1ff 28#include <stddef.h>
3fbf9cbb 29#include <stdio.h>
3fbf9cbb 30#include <stdlib.h>
3f6fd1ba 31#include <string.h>
74055aa7 32#include <sys/inotify.h>
3f6fd1ba
LP		 33#include <sys/stat.h>
34#include <unistd.h>
87d2c1ff 35
74055aa7 36#include "sd-bus.h"
3f6fd1ba
LP		 37#include "sd-journal.h"
38
f8eeeaf9 39#include "acl-util.h"
b5efdb8a 40#include "alloc-util.h"
3f6fd1ba
LP		 41#include "bus-error.h"
42#include "bus-util.h"
43#include "catalog.h"
c8b3094d 44#include "chattr-util.h"
3ffd4af2 45#include "fd-util.h"
68fee104 46#include "fileio.h"
f4f15635 47#include "fs-util.h"
3f6fd1ba 48#include "fsprg.h"
7d50b32a 49#include "glob-util.h"
3f6fd1ba 50#include "hostname-util.h"
c004493c 51#include "io-util.h"
7560fffc 52#include "journal-def.h"
3f6fd1ba 53#include "journal-internal.h"
f6a971bc 54#include "journal-qrcode.h"
dbd2a83f 55#include "journal-vacuum.h"
3f6fd1ba 56#include "journal-verify.h"
8752c575 57#include "locale-util.h"
3f6fd1ba
LP		 58#include "log.h"
59#include "logs-show.h"
74055aa7 60#include "mkdir.h"
3f6fd1ba 61#include "pager.h"
6bedfcbb 62#include "parse-util.h"
3f6fd1ba 63#include "path-util.h"
78f22b97 64#include "rlimit-util.h"
3f6fd1ba
LP		 65#include "set.h"
66#include "sigbus.h"
67#include "strv.h"
7ccbd1ae 68#include "syslog-util.h"
288a74cc 69#include "terminal-util.h"
795ab08f
MS		 70#include "udev.h"
71#include "udev-util.h"
3f6fd1ba 72#include "unit-name.h"
b1d4f8e1 73#include "user-util.h"
7560fffc 74
baed47c3 75#define DEFAULT_FSS_INTERVAL_USEC (15*USEC_PER_MINUTE)
250d54b5 76
97e1cc8b
LP		 77enum {
78 /* Special values for arg_lines */
79 ARG_LINES_DEFAULT = -2,
80 ARG_LINES_ALL = -1,
81};
82
df50185b 83static OutputMode arg_output = OUTPUT_SHORT;
9fd29044 84static bool arg_utc = false;
1b12a7b5 85static bool arg_pager_end = false;
72f59706 86static bool arg_follow = false;
2b8f6883 87static bool arg_full = true;
cd4b13e0 88static bool arg_all = false;
0d43c694 89static bool arg_no_pager = false;
97e1cc8b 90static int arg_lines = ARG_LINES_DEFAULT;
e91af489 91static bool arg_no_tail = false;
43673799 92static bool arg_quiet = false;
9e8a535f 93static bool arg_merge = false;
d121b396 94static bool arg_boot = false;
442e2def
LP		 95static sd_id128_t arg_boot_id = {};
96static int arg_boot_offset = 0;
99271804 97static bool arg_dmesg = false;
991e274b 98static bool arg_no_hostname = false;
8f14c832 99static const char *arg_cursor = NULL;
248fc619
ZJS		 100static const char *arg_after_cursor = NULL;
101static bool arg_show_cursor = false;
a963990f 102static const char *arg_directory = NULL;
8d98da3f 103static char **arg_file = NULL;
941e990d 104static int arg_priorities = 0xFF;
baed47c3 105static const char *arg_verify_key = NULL;
feb12d3e 106#ifdef HAVE_GCRYPT
baed47c3 107static usec_t arg_interval = DEFAULT_FSS_INTERVAL_USEC;
b8547c10 108static bool arg_force = false;
feb12d3e 109#endif
cfbc22ab
LP		 110static usec_t arg_since, arg_until;
111static bool arg_since_set = false, arg_until_set = false;
73083640 112static char **arg_syslog_identifier = NULL;
b9e40524
HH		 113static char **arg_system_units = NULL;
114static char **arg_user_units = NULL;
3c1668da 115static const char *arg_field = NULL;
d4205751 116static bool arg_catalog = false;
d89d6c86 117static bool arg_reverse = false;
3f3a438f 118static int arg_journal_type = 0;
0f03c2a4 119static char *arg_root = NULL;
b6741478 120static const char *arg_machine = NULL;
8580d1f7
LP		 121static uint64_t arg_vacuum_size = 0;
122static uint64_t arg_vacuum_n_files = 0;
123static usec_t arg_vacuum_time = 0;
50f20cfd 124
7560fffc
LP		 125static enum {
126 ACTION_SHOW,
127 ACTION_NEW_ID128,
128 ACTION_PRINT_HEADER,
beec0085 129 ACTION_SETUP_KEYS,
a1a03e30
LP		 130 ACTION_VERIFY,
131 ACTION_DISK_USAGE,
d4205751 132 ACTION_LIST_CATALOG,
54b7254c 133 ACTION_DUMP_CATALOG,
f1188074
ZJS		 134 ACTION_UPDATE_CATALOG,
135 ACTION_LIST_BOOTS,
74055aa7 136 ACTION_FLUSH,
a020b3b3 137 ACTION_SYNC,
e3fdfb49 138 ACTION_ROTATE,
dbd2a83f 139 ACTION_VACUUM,
69e714f3
LP		 140 ACTION_LIST_FIELDS,
141 ACTION_LIST_FIELD_NAMES,
7560fffc
LP		 142} arg_action = ACTION_SHOW;
143
45bc27b6 144typedef struct BootId {
a331b5e6 145 sd_id128_t id;
f1188074
ZJS		 146 uint64_t first;
147 uint64_t last;
45bc27b6
LP		 148 LIST_FIELDS(struct BootId, boot_list);
149} BootId;
a331b5e6 150
795ab08f
MS		 151static int add_matches_for_device(sd_journal *j, const char *devpath) {
152 int r;
153 _cleanup_udev_unref_ struct udev *udev = NULL;
154 _cleanup_udev_device_unref_ struct udev_device *device = NULL;
155 struct udev_device *d = NULL;
156 struct stat st;
157
158 assert(j);
159 assert(devpath);
160
161 if (!path_startswith(devpath, "/dev/")) {
162 log_error("Devpath does not start with /dev/");
163 return -EINVAL;
164 }
165
166 udev = udev_new();
167 if (!udev)
168 return log_oom();
169
170 r = stat(devpath, &st);
171 if (r < 0)
172 log_error_errno(errno, "Couldn't stat file: %m");
173
174 d = device = udev_device_new_from_devnum(udev, S_ISBLK(st.st_mode) ? 'b' : 'c', st.st_rdev);
175 if (!device)
176 return log_error_errno(errno, "Failed to get udev device from devnum %u:%u: %m", major(st.st_rdev), minor(st.st_rdev));
177
178 while (d) {
179 _cleanup_free_ char *match = NULL;
180 const char *subsys, *sysname, *devnode;
181
182 subsys = udev_device_get_subsystem(d);
183 if (!subsys) {
184 d = udev_device_get_parent(d);
185 continue;
186 }
187
188 sysname = udev_device_get_sysname(d);
189 if (!sysname) {
190 d = udev_device_get_parent(d);
191 continue;
192 }
193
194 match = strjoin("_KERNEL_DEVICE=+", subsys, ":", sysname, NULL);
195 if (!match)
196 return log_oom();
197
198 r = sd_journal_add_match(j, match, 0);
199 if (r < 0)
200 return log_error_errno(r, "Failed to add match: %m");
201
202 devnode = udev_device_get_devnode(d);
203 if (devnode) {
204 _cleanup_free_ char *match1 = NULL;
205
206 r = stat(devnode, &st);
207 if (r < 0)
208 return log_error_errno(r, "Failed to stat() device node \"%s\": %m", devnode);
209
210 r = asprintf(&match1, "_KERNEL_DEVICE=%c%u:%u", S_ISBLK(st.st_mode) ? 'b' : 'c', major(st.st_rdev), minor(st.st_rdev));
211 if (r < 0)
212 return log_oom();
213
214 r = sd_journal_add_match(j, match1, 0);
215 if (r < 0)
216 return log_error_errno(r, "Failed to add match: %m");
217 }
218
219 d = udev_device_get_parent(d);
220 }
221
485fd9a7
MS		 222 r = add_match_this_boot(j, arg_machine);
223 if (r < 0)
224 return log_error_errno(r, "Failed to add match for the current boot: %m");
225
795ab08f
MS		 226 return 0;
227}
228
5ab99e07
LP		 229static char *format_timestamp_maybe_utc(char *buf, size_t l, usec_t t) {
230
231 if (arg_utc)
232 return format_timestamp_utc(buf, l, t);
233
234 return format_timestamp(buf, l, t);
235}
236
442e2def
LP		 237static int parse_boot_descriptor(const char *x, sd_id128_t *boot_id, int *offset) {
238 sd_id128_t id = SD_ID128_NULL;
239 int off = 0, r;
240
241 if (strlen(x) >= 32) {
242 char *t;
243
244 t = strndupa(x, 32);
245 r = sd_id128_from_string(t, &id);
246 if (r >= 0)
247 x += 32;
248
249 if (*x != '-' && *x != '+' && *x != 0)
250 return -EINVAL;
251
252 if (*x != 0) {
253 r = safe_atoi(x, &off);
254 if (r < 0)
255 return r;
256 }
257 } else {
258 r = safe_atoi(x, &off);
259 if (r < 0)
260 return r;
261 }
262
263 if (boot_id)
264 *boot_id = id;
265
266 if (offset)
267 *offset = off;
268
269 return 0;
270}
271
601185b4 272static void help(void) {
0d43c694 273
ea4b98e6 274 pager_open(arg_no_pager, arg_pager_end);
faf5077f 275
cd4b13e0 276 printf("%s [OPTIONS...] [MATCHES...]\n\n"
15119c16 277 "Query the journal.\n\n"
94b65516 278 "Options:\n"
eacbb4d3
ZJS		 279 " --system Show the system journal\n"
280 " --user Show the user journal for the current user\n"
b6741478 281 " -M --machine=CONTAINER Operate on local container\n"
66f52924
JS		 282 " -S --since=DATE Show entries not older than the specified date\n"
283 " -U --until=DATE Show entries not newer than the specified date\n"
40f0b71b
ZJS		 284 " -c --cursor=CURSOR Show entries starting at the specified cursor\n"
285 " --after-cursor=CURSOR Show entries after the specified cursor\n"
248fc619 286 " --show-cursor Print the cursor after all the entries\n"
40f0b71b 287 " -b --boot[=ID] Show current boot or the specified boot\n"
f1188074 288 " --list-boots Show terse information about recorded boots\n"
c736283b 289 " -k --dmesg Show kernel message log from the current boot\n"
40f0b71b
ZJS		 290 " -u --unit=UNIT Show logs from the specified unit\n"
291 " --user-unit=UNIT Show logs from the specified user unit\n"
292 " -t --identifier=STRING Show entries with the specified syslog identifier\n"
293 " -p --priority=RANGE Show entries with the specified priority\n"
294 " -e --pager-end Immediately jump to the end in the pager\n"
c736283b 295 " -f --follow Follow the journal\n"
248fc619
ZJS		 296 " -n --lines[=INTEGER] Number of journal entries to show\n"
297 " --no-tail Show all lines, even in follow mode\n"
298 " -r --reverse Show the newest entries first\n"
f02d8367 299 " -o --output=STRING Change journal output mode (short, short-iso,\n"
c736283b
JSJ		 300 " short-precise, short-monotonic, verbose,\n"
301 " export, json, json-pretty, json-sse, cat)\n"
9fd29044 302 " --utc Express time in Coordinated Universal Time (UTC)\n"
248fc619 303 " -x --catalog Add message explanations where available\n"
2b8f6883 304 " --no-full Ellipsize fields\n"
248fc619 305 " -a --all Show all fields, including long and unprintable\n"
20d936ba 306 " -q --quiet Do not show info messages and privilege warning\n"
248fc619 307 " --no-pager Do not pipe output into a pager\n"
991e274b 308 " --no-hostname Suppress output of hostname field\n"
248fc619
ZJS		 309 " -m --merge Show entries from all available journals\n"
310 " -D --directory=PATH Show journal files from directory\n"
311 " --file=PATH Show journal file\n"
94b65516 312 " --root=ROOT Operate on catalog files below a root directory\n"
15119c16 313#ifdef HAVE_GCRYPT
248fc619
ZJS		 314 " --interval=TIME Time interval for changing the FSS sealing key\n"
315 " --verify-key=KEY Specify FSS verification key\n"
40f0b71b 316 " --force Override of the FSS key pair with --setup-keys\n"
15119c16
LP		 317#endif
318 "\nCommands:\n"
c736283b 319 " -h --help Show this help text\n"
248fc619 320 " --version Show package version\n"
69e714f3 321 " -N --fields List all field names currently used\n"
dbd2a83f 322 " -F --field=FIELD List all values that a specified field takes\n"
c736283b 323 " --disk-usage Show total disk usage of all journal files\n"
40f0b71b 324 " --vacuum-size=BYTES Reduce disk usage below specified size\n"
8580d1f7
LP		 325 " --vacuum-files=INT Leave only the specified number of journal files\n"
326 " --vacuum-time=TIME Remove journal files older than specified time\n"
94b65516
LP		 327 " --verify Verify journal file consistency\n"
328 " --sync Synchronize unwritten journal messages to disk\n"
dbd2a83f 329 " --flush Flush all journal data from /run into /var\n"
e3fdfb49 330 " --rotate Request immediate rotation of the journal files\n"
dbd2a83f 331 " --header Show journal header information\n"
40f0b71b 332 " --list-catalog Show all message IDs in the catalog\n"
248fc619
ZJS		 333 " --dump-catalog Show entries in the message catalog\n"
334 " --update-catalog Update the message catalog database\n"
94b65516 335 " --new-id128 Generate a new 128-bit ID\n"
feb12d3e 336#ifdef HAVE_GCRYPT
c736283b 337 " --setup-keys Generate a new FSS key pair\n"
feb12d3e
LP		 338#endif
339 , program_invocation_short_name);
0d43c694
LP		 340}
341
342static int parse_argv(int argc, char *argv[]) {
343
344 enum {
345 ARG_VERSION = 0x100,
e91af489 346 ARG_NO_PAGER,
2b8f6883 347 ARG_NO_FULL,
55ee336c 348 ARG_NO_TAIL,
dca6219e 349 ARG_NEW_ID128,
f1188074 350 ARG_LIST_BOOTS,
3f3a438f
ZJS		 351 ARG_USER,
352 ARG_SYSTEM,
13cbf3a5 353 ARG_ROOT,
7560fffc 354 ARG_HEADER,
beec0085 355 ARG_SETUP_KEYS,
8d98da3f 356 ARG_FILE,
baed47c3 357 ARG_INTERVAL,
4da416aa 358 ARG_VERIFY,
a1a03e30 359 ARG_VERIFY_KEY,
cfbc22ab 360 ARG_DISK_USAGE,
248fc619
ZJS		 361 ARG_AFTER_CURSOR,
362 ARG_SHOW_CURSOR,
ffa7cd15 363 ARG_USER_UNIT,
d4205751 364 ARG_LIST_CATALOG,
54b7254c 365 ARG_DUMP_CATALOG,
3f3a438f 366 ARG_UPDATE_CATALOG,
b8547c10 367 ARG_FORCE,
9fd29044 368 ARG_UTC,
94b65516 369 ARG_SYNC,
74055aa7 370 ARG_FLUSH,
e3fdfb49 371 ARG_ROTATE,
dbd2a83f 372 ARG_VACUUM_SIZE,
8580d1f7 373 ARG_VACUUM_FILES,
dbd2a83f 374 ARG_VACUUM_TIME,
991e274b 375 ARG_NO_HOSTNAME,
0d43c694
LP		 376 };
377
378 static const struct option options[] = {
248fc619
ZJS		 379 { "help", no_argument, NULL, 'h' },
380 { "version" , no_argument, NULL, ARG_VERSION },
381 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
382 { "pager-end", no_argument, NULL, 'e' },
383 { "follow", no_argument, NULL, 'f' },
384 { "force", no_argument, NULL, ARG_FORCE },
385 { "output", required_argument, NULL, 'o' },
386 { "all", no_argument, NULL, 'a' },
387 { "full", no_argument, NULL, 'l' },
2b8f6883 388 { "no-full", no_argument, NULL, ARG_NO_FULL },
248fc619
ZJS		 389 { "lines", optional_argument, NULL, 'n' },
390 { "no-tail", no_argument, NULL, ARG_NO_TAIL },
391 { "new-id128", no_argument, NULL, ARG_NEW_ID128 },
392 { "quiet", no_argument, NULL, 'q' },
393 { "merge", no_argument, NULL, 'm' },
394 { "boot", optional_argument, NULL, 'b' },
f1188074 395 { "list-boots", no_argument, NULL, ARG_LIST_BOOTS },
248fc619
ZJS		 396 { "this-boot", optional_argument, NULL, 'b' }, /* deprecated */
397 { "dmesg", no_argument, NULL, 'k' },
398 { "system", no_argument, NULL, ARG_SYSTEM },
399 { "user", no_argument, NULL, ARG_USER },
400 { "directory", required_argument, NULL, 'D' },
401 { "file", required_argument, NULL, ARG_FILE },
402 { "root", required_argument, NULL, ARG_ROOT },
403 { "header", no_argument, NULL, ARG_HEADER },
73083640 404 { "identifier", required_argument, NULL, 't' },
248fc619
ZJS		 405 { "priority", required_argument, NULL, 'p' },
406 { "setup-keys", no_argument, NULL, ARG_SETUP_KEYS },
407 { "interval", required_argument, NULL, ARG_INTERVAL },
408 { "verify", no_argument, NULL, ARG_VERIFY },
409 { "verify-key", required_argument, NULL, ARG_VERIFY_KEY },
410 { "disk-usage", no_argument, NULL, ARG_DISK_USAGE },
411 { "cursor", required_argument, NULL, 'c' },
412 { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR },
413 { "show-cursor", no_argument, NULL, ARG_SHOW_CURSOR },
66f52924
JS		 414 { "since", required_argument, NULL, 'S' },
415 { "until", required_argument, NULL, 'U' },
248fc619
ZJS		 416 { "unit", required_argument, NULL, 'u' },
417 { "user-unit", required_argument, NULL, ARG_USER_UNIT },
418 { "field", required_argument, NULL, 'F' },
69e714f3 419 { "fields", no_argument, NULL, 'N' },
248fc619
ZJS		 420 { "catalog", no_argument, NULL, 'x' },
421 { "list-catalog", no_argument, NULL, ARG_LIST_CATALOG },
422 { "dump-catalog", no_argument, NULL, ARG_DUMP_CATALOG },
423 { "update-catalog", no_argument, NULL, ARG_UPDATE_CATALOG },
424 { "reverse", no_argument, NULL, 'r' },
b6741478 425 { "machine", required_argument, NULL, 'M' },
9fd29044 426 { "utc", no_argument, NULL, ARG_UTC },
74055aa7 427 { "flush", no_argument, NULL, ARG_FLUSH },
94b65516 428 { "sync", no_argument, NULL, ARG_SYNC },
e3fdfb49 429 { "rotate", no_argument, NULL, ARG_ROTATE },
dbd2a83f 430 { "vacuum-size", required_argument, NULL, ARG_VACUUM_SIZE },
8580d1f7 431 { "vacuum-files", required_argument, NULL, ARG_VACUUM_FILES },
dbd2a83f 432 { "vacuum-time", required_argument, NULL, ARG_VACUUM_TIME },
991e274b 433 { "no-hostname", no_argument, NULL, ARG_NO_HOSTNAME },
eb9da376 434 {}
0d43c694
LP		 435 };
436
2100675e 437 int c, r;
0d43c694
LP		 438
439 assert(argc >= 0);
440 assert(argv);
441
69e714f3 442 while ((c = getopt_long(argc, argv, "hefo:aln::qmb::kD:p:c:S:U:t:u:NF:xrM:", options, NULL)) >= 0)
0d43c694
LP		 443
444 switch (c) {
445
446 case 'h':
601185b4
ZJS		 447 help();
448 return 0;
0d43c694
LP		 449
450 case ARG_VERSION:
3f6fd1ba 451 return version();
0d43c694
LP		 452
453 case ARG_NO_PAGER:
454 arg_no_pager = true;
455 break;
456
1b12a7b5
HH		 457 case 'e':
458 arg_pager_end = true;
fe59e38b 459
97e1cc8b 460 if (arg_lines == ARG_LINES_DEFAULT)
fe59e38b
LP		 461 arg_lines = 1000;
462
1b12a7b5
HH		 463 break;
464
0d43c694
LP		 465 case 'f':
466 arg_follow = true;
467 break;
468
469 case 'o':
1705594f 470 arg_output = output_mode_from_string(optarg);
df50185b 471 if (arg_output < 0) {
edfb521a 472 log_error("Unknown output format '%s'.", optarg);
0d43c694
LP		 473 return -EINVAL;
474 }
df50185b 475
edfb521a
ZJS		 476 if (arg_output == OUTPUT_EXPORT ||
477 arg_output == OUTPUT_JSON ||
478 arg_output == OUTPUT_JSON_PRETTY ||
479 arg_output == OUTPUT_JSON_SSE ||
480 arg_output == OUTPUT_CAT)
481 arg_quiet = true;
482
0d43c694
LP		 483 break;
484
98a6e132 485 case 'l':
e3657ecd
ZJS		 486 arg_full = true;
487 break;
488
2b8f6883
ZJS		 489 case ARG_NO_FULL:
490 arg_full = false;
491 break;
492
0d43c694 493 case 'a':
cd4b13e0 494 arg_all = true;
0d43c694
LP		 495 break;
496
2100675e 497 case 'n':
1705594f 498 if (optarg) {
48382487 499 if (streq(optarg, "all"))
97e1cc8b 500 arg_lines = ARG_LINES_ALL;
48382487
JJ		 501 else {
502 r = safe_atoi(optarg, &arg_lines);
503 if (r < 0 || arg_lines < 0) {
504 log_error("Failed to parse lines '%s'", optarg);
505 return -EINVAL;
506 }
1705594f 507 }
96088db0 508 } else {
48382487 509 arg_lines = 10;
96088db0
LP		 510
511 /* Hmm, no argument? Maybe the next
512 * word on the command line is
513 * supposed to be the argument? Let's
514 * see if there is one, and is
48382487
JJ		 515 * parsable. */
516 if (optind < argc) {
517 int n;
518 if (streq(argv[optind], "all")) {
97e1cc8b 519 arg_lines = ARG_LINES_ALL;
48382487
JJ		 520 optind++;
521 } else if (safe_atoi(argv[optind], &n) >= 0 && n >= 0) {
522 arg_lines = n;
523 optind++;
524 }
525 }
96088db0 526 }
1705594f 527
2100675e
LP		 528 break;
529
e91af489
LP		 530 case ARG_NO_TAIL:
531 arg_no_tail = true;
532 break;
533
39f7f5c1 534 case ARG_NEW_ID128:
7560fffc 535 arg_action = ACTION_NEW_ID128;
55ee336c
LP		 536 break;
537
43673799
LP		 538 case 'q':
539 arg_quiet = true;
490e567d 540 break;
43673799 541
9e8a535f
LP		 542 case 'm':
543 arg_merge = true;
2bd3c38a
LP		 544 break;
545
59cea26a 546 case 'b':
d121b396 547 arg_boot = true;
6cebe83c 548
442e2def 549 if (optarg) {
909dea0c 550 r = parse_boot_descriptor(optarg, &arg_boot_id, &arg_boot_offset);
442e2def
LP		 551 if (r < 0) {
552 log_error("Failed to parse boot descriptor '%s'", optarg);
553 return -EINVAL;
554 }
555 } else {
6cebe83c 556
442e2def
LP		 557 /* Hmm, no argument? Maybe the next
558 * word on the command line is
559 * supposed to be the argument? Let's
560 * see if there is one and is parsable
561 * as a boot descriptor... */
562
563 if (optind < argc &&
564 parse_boot_descriptor(argv[optind], &arg_boot_id, &arg_boot_offset) >= 0)
6cebe83c 565 optind++;
6cebe83c 566 }
d121b396 567
59cea26a
LP		 568 break;
569
f1188074
ZJS		 570 case ARG_LIST_BOOTS:
571 arg_action = ACTION_LIST_BOOTS;
572 break;
573
99271804 574 case 'k':
d121b396 575 arg_boot = arg_dmesg = true;
99271804
ZJS		 576 break;
577
3f3a438f
ZJS		 578 case ARG_SYSTEM:
579 arg_journal_type |= SD_JOURNAL_SYSTEM;
580 break;
581
582 case ARG_USER:
583 arg_journal_type |= SD_JOURNAL_CURRENT_USER;
584 break;
585
b6741478
LP		 586 case 'M':
587 arg_machine = optarg;
588 break;
589
a963990f
LP		 590 case 'D':
591 arg_directory = optarg;
592 break;
593
8d98da3f
ZJS		 594 case ARG_FILE:
595 r = glob_extend(&arg_file, optarg);
23bbb0de
MS		 596 if (r < 0)
597 return log_error_errno(r, "Failed to add paths: %m");
8d98da3f
ZJS		 598 break;
599
13cbf3a5 600 case ARG_ROOT:
0f03c2a4
LP		 601 r = parse_path_argument_and_warn(optarg, true, &arg_root);
602 if (r < 0)
603 return r;
13cbf3a5
ZJS		 604 break;
605
8f14c832
LP		 606 case 'c':
607 arg_cursor = optarg;
608 break;
609
248fc619
ZJS		 610 case ARG_AFTER_CURSOR:
611 arg_after_cursor = optarg;
612 break;
613
614 case ARG_SHOW_CURSOR:
615 arg_show_cursor = true;
616 break;
617
dca6219e 618 case ARG_HEADER:
7560fffc
LP		 619 arg_action = ACTION_PRINT_HEADER;
620 break;
621
feb12d3e
LP		 622 case ARG_VERIFY:
623 arg_action = ACTION_VERIFY;
624 break;
625
a1a03e30
LP		 626 case ARG_DISK_USAGE:
627 arg_action = ACTION_DISK_USAGE;
628 break;
629
dbd2a83f
LP		 630 case ARG_VACUUM_SIZE:
631 r = parse_size(optarg, 1024, &arg_vacuum_size);
632 if (r < 0) {
633 log_error("Failed to parse vacuum size: %s", optarg);
634 return r;
635 }
636
637 arg_action = ACTION_VACUUM;
638 break;
639
8580d1f7
LP		 640 case ARG_VACUUM_FILES:
641 r = safe_atou64(optarg, &arg_vacuum_n_files);
642 if (r < 0) {
643 log_error("Failed to parse vacuum files: %s", optarg);
644 return r;
645 }
646
647 arg_action = ACTION_VACUUM;
648 break;
649
dbd2a83f
LP		 650 case ARG_VACUUM_TIME:
651 r = parse_sec(optarg, &arg_vacuum_time);
652 if (r < 0) {
653 log_error("Failed to parse vacuum time: %s", optarg);
654 return r;
655 }
656
657 arg_action = ACTION_VACUUM;
658 break;
659
feb12d3e 660#ifdef HAVE_GCRYPT
b8547c10
SL		 661 case ARG_FORCE:
662 arg_force = true;
663 break;
664
7560fffc
LP		 665 case ARG_SETUP_KEYS:
666 arg_action = ACTION_SETUP_KEYS;
dca6219e
LP		 667 break;
668
beec0085 669
baed47c3 670 case ARG_VERIFY_KEY:
4da416aa 671 arg_action = ACTION_VERIFY;
baed47c3 672 arg_verify_key = optarg;
9e8a535f 673 arg_merge = false;
4da416aa
LP		 674 break;
675
baed47c3 676 case ARG_INTERVAL:
7f602784 677 r = parse_sec(optarg, &arg_interval);
baed47c3
LP		 678 if (r < 0 || arg_interval <= 0) {
679 log_error("Failed to parse sealing key change interval: %s", optarg);
14d10188
LP		 680 return -EINVAL;
681 }
682 break;
feb12d3e
LP		 683#else
684 case ARG_SETUP_KEYS:
685 case ARG_VERIFY_KEY:
686 case ARG_INTERVAL:
b8547c10 687 case ARG_FORCE:
feb12d3e 688 log_error("Forward-secure sealing not available.");
15411c0c 689 return -EOPNOTSUPP;
feb12d3e 690#endif
14d10188 691
941e990d
LP		 692 case 'p': {
693 const char *dots;
694
695 dots = strstr(optarg, "..");
696 if (dots) {
697 char *a;
698 int from, to, i;
699
700 /* a range */
701 a = strndup(optarg, dots - optarg);
702 if (!a)
703 return log_oom();
704
705 from = log_level_from_string(a);
706 to = log_level_from_string(dots + 2);
707 free(a);
708
709 if (from < 0 || to < 0) {
710 log_error("Failed to parse log level range %s", optarg);
711 return -EINVAL;
712 }
713
714 arg_priorities = 0;
715
716 if (from < to) {
717 for (i = from; i <= to; i++)
718 arg_priorities |= 1 << i;
719 } else {
720 for (i = to; i <= from; i++)
721 arg_priorities |= 1 << i;
722 }
723
724 } else {
725 int p, i;
726
727 p = log_level_from_string(optarg);
728 if (p < 0) {
729 log_error("Unknown log level %s", optarg);
730 return -EINVAL;
731 }
732
733 arg_priorities = 0;
734
735 for (i = 0; i <= p; i++)
736 arg_priorities |= 1 << i;
737 }
738
739 break;
740 }
741
66f52924 742 case 'S':
cfbc22ab
LP		 743 r = parse_timestamp(optarg, &arg_since);
744 if (r < 0) {
745 log_error("Failed to parse timestamp: %s", optarg);
746 return -EINVAL;
747 }
748 arg_since_set = true;
749 break;
750
66f52924 751 case 'U':
cfbc22ab
LP		 752 r = parse_timestamp(optarg, &arg_until);
753 if (r < 0) {
754 log_error("Failed to parse timestamp: %s", optarg);
755 return -EINVAL;
756 }
757 arg_until_set = true;
758 break;
759
73083640
HH		 760 case 't':
761 r = strv_extend(&arg_syslog_identifier, optarg);
762 if (r < 0)
763 return log_oom();
764 break;
765
7199aa96 766 case 'u':
b9e40524
HH		 767 r = strv_extend(&arg_system_units, optarg);
768 if (r < 0)
769 return log_oom();
ffa7cd15
DW		 770 break;
771
7199aa96 772 case ARG_USER_UNIT:
b9e40524
HH		 773 r = strv_extend(&arg_user_units, optarg);
774 if (r < 0)
775 return log_oom();
c3f60ec5
LP		 776 break;
777
15119c16 778 case 'F':
69e714f3 779 arg_action = ACTION_LIST_FIELDS;
15119c16
LP		 780 arg_field = optarg;
781 break;
782
69e714f3
LP		 783 case 'N':
784 arg_action = ACTION_LIST_FIELD_NAMES;
785 break;
786
991e274b
LP		 787 case ARG_NO_HOSTNAME:
788 arg_no_hostname = true;
789 break;
790
d4205751
LP		 791 case 'x':
792 arg_catalog = true;
793 break;
794
795 case ARG_LIST_CATALOG:
796 arg_action = ACTION_LIST_CATALOG;
797 break;
798
54b7254c
ZJS		 799 case ARG_DUMP_CATALOG:
800 arg_action = ACTION_DUMP_CATALOG;
801 break;
802
d4205751
LP		 803 case ARG_UPDATE_CATALOG:
804 arg_action = ACTION_UPDATE_CATALOG;
805 break;
806
d89d6c86
LN		 807 case 'r':
808 arg_reverse = true;
809 break;
810
9fd29044
JS		 811 case ARG_UTC:
812 arg_utc = true;
813 break;
814
74055aa7
LP		 815 case ARG_FLUSH:
816 arg_action = ACTION_FLUSH;
817 break;
818
e3fdfb49
EV		 819 case ARG_ROTATE:
820 arg_action = ACTION_ROTATE;
821 break;
822
94b65516
LP		 823 case ARG_SYNC:
824 arg_action = ACTION_SYNC;
825 break;
826
eb9da376 827 case '?':
0d43c694 828 return -EINVAL;
eb9da376
LP		 829
830 default:
831 assert_not_reached("Unhandled option");
0d43c694 832 }
0d43c694 833
70af7b8a 834 if (arg_follow && !arg_no_tail && !arg_since && arg_lines == ARG_LINES_DEFAULT)
e91af489
LP		 835 arg_lines = 10;
836
b6741478
LP		 837 if (!!arg_directory + !!arg_file + !!arg_machine > 1) {
838 log_error("Please specify either -D/--directory= or --file= or -M/--machine=, not more than one.");
8d98da3f
ZJS		 839 return -EINVAL;
840 }
841
3ba09ee8 842 if (arg_since_set && arg_until_set && arg_since > arg_until) {
cfbc22ab
LP		 843 log_error("--since= must be before --until=.");
844 return -EINVAL;
845 }
846
248fc619
ZJS		 847 if (!!arg_cursor + !!arg_after_cursor + !!arg_since_set > 1) {
848 log_error("Please specify only one of --since=, --cursor=, and --after-cursor.");
cfbc22ab
LP		 849 return -EINVAL;
850 }
851
d89d6c86
LN		 852 if (arg_follow && arg_reverse) {
853 log_error("Please specify either --reverse= or --follow=, not both.");
854 return -EINVAL;
855 }
856
f98a41c2 857 if (!IN_SET(arg_action, ACTION_SHOW, ACTION_DUMP_CATALOG, ACTION_LIST_CATALOG) && optind < argc) {
0b6b7c20
ZJS		 858 log_error("Extraneous arguments starting with '%s'", argv[optind]);
859 return -EINVAL;
860 }
861
596a2329
JJ		 862 if ((arg_boot || arg_action == ACTION_LIST_BOOTS) && (arg_file || arg_directory || arg_merge)) {
863 log_error("Using --boot or --list-boots with --file, --directory or --merge is not supported.");
864 return -EINVAL;
865 }
866
0d43c694
LP		 867 return 1;
868}
869
39f7f5c1 870static int generate_new_id128(void) {
55ee336c
LP		 871 sd_id128_t id;
872 int r;
873 unsigned i;
874
875 r = sd_id128_randomize(&id);
23bbb0de
MS		 876 if (r < 0)
877 return log_error_errno(r, "Failed to generate ID: %m");
55ee336c
LP		 878
879 printf("As string:\n"
880 SD_ID128_FORMAT_STR "\n\n"
881 "As UUID:\n"
882 "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n\n"
883 "As macro:\n"
d489071f 884 "#define MESSAGE_XYZ SD_ID128_MAKE(",
55ee336c
LP		 885 SD_ID128_FORMAT_VAL(id),
886 SD_ID128_FORMAT_VAL(id));
55ee336c
LP		 887 for (i = 0; i < 16; i++)
888 printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
d489071f 889 fputs(")\n\n", stdout);
55ee336c 890
d489071f
ZJS		 891 printf("As Python constant:\n"
892 ">>> import uuid\n"
893 ">>> MESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')\n",
894 SD_ID128_FORMAT_VAL(id));
55ee336c
LP		 895
896 return 0;
897}
898
a963990f
LP		 899static int add_matches(sd_journal *j, char **args) {
900 char **i;
4e602943 901 bool have_term = false;
59cea26a 902
a963990f 903 assert(j);
59cea26a 904
a963990f 905 STRV_FOREACH(i, args) {
52aeb63c 906 int r;
59cea26a 907
4e602943
ZJS		 908 if (streq(*i, "+")) {
909 if (!have_term)
910 break;
cbdca852 911 r = sd_journal_add_disjunction(j);
4e602943
ZJS		 912 have_term = false;
913
914 } else if (path_is_absolute(*i)) {
795ab08f 915 _cleanup_free_ char *p, *t = NULL, *t2 = NULL, *interpreter = NULL;
e5124088 916 const char *path;
a963990f 917 struct stat st;
e5124088 918
a963990f 919 p = canonicalize_file_name(*i);
795ab08f 920 path = p ?: *i;
e5124088 921
26b9f165 922 if (lstat(path, &st) < 0)
4a62c710 923 return log_error_errno(errno, "Couldn't stat file: %m");
e5124088 924
68fee104
ZJS		 925 if (S_ISREG(st.st_mode) && (0111 & st.st_mode)) {
926 if (executable_is_script(path, &interpreter) > 0) {
927 _cleanup_free_ char *comm;
928
2b6bf07d 929 comm = strndup(basename(path), 15);
68fee104
ZJS		 930 if (!comm)
931 return log_oom();
932
933 t = strappend("_COMM=", comm);
795ab08f
MS		 934 if (!t)
935 return log_oom();
68fee104
ZJS		 936
937 /* Append _EXE only if the interpreter is not a link.
73e231ab 938 Otherwise, it might be outdated often. */
795ab08f 939 if (lstat(interpreter, &st) == 0 && !S_ISLNK(st.st_mode)) {
68fee104
ZJS		 940 t2 = strappend("_EXE=", interpreter);
941 if (!t2)
942 return log_oom();
943 }
795ab08f 944 } else {
68fee104 945 t = strappend("_EXE=", path);
795ab08f
MS		 946 if (!t)
947 return log_oom();
948 }
949
950 r = sd_journal_add_match(j, t, 0);
951
952 if (r >=0 && t2)
953 r = sd_journal_add_match(j, t2, 0);
954
955 } else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
956 r = add_matches_for_device(j, path);
957 if (r < 0)
958 return r;
959 } else {
fb93cf73 960 log_error("File is neither a device node, nor regular file, nor executable: %s", *i);
a963990f 961 return -EINVAL;
50940700 962 }
e5124088 963
4e602943 964 have_term = true;
4e602943 965 } else {
cbdca852 966 r = sd_journal_add_match(j, *i, 0);
4e602943
ZJS		 967 have_term = true;
968 }
e5124088 969
23bbb0de
MS		 970 if (r < 0)
971 return log_error_errno(r, "Failed to add match '%s': %m", *i);
de7b95cd
LP		 972 }
973
4e602943
ZJS		 974 if (!strv_isempty(args) && !have_term) {
975 log_error("\"+\" can only be used between terms");
976 return -EINVAL;
977 }
978
a963990f
LP		 979 return 0;
980}
981
9530e0d0
LP		 982static void boot_id_free_all(BootId *l) {
983
984 while (l) {
985 BootId *i = l;
986 LIST_REMOVE(boot_list, l, i);
987 free(i);
988 }
989}
990
45bc27b6
LP		 991static int discover_next_boot(
992 sd_journal *j,
993 BootId **boot,
994 bool advance_older,
995 bool read_realtime) {
996
f1188074 997 int r;
596a2329 998 char match[9+32+1] = "_BOOT_ID=";
45bc27b6 999 _cleanup_free_ BootId *next_boot = NULL;
ea7061e4
JJ		 1000
1001 assert(j);
596a2329
JJ		 1002 assert(boot);
1003
1004 /* We expect the journal to be on the last position of a boot
1005 * (in relation to the direction we are going), so that the next
1006 * invocation of sd_journal_next/previous will be from a different
1007 * boot. We then collect any information we desire and then jump
1008 * to the last location of the new boot by using a _BOOT_ID match
1009 * coming from the other journal direction. */
1010
1011 /* Make sure we aren't restricted by any _BOOT_ID matches, so that
1012 * we can actually advance to a *different* boot. */
1013 sd_journal_flush_matches(j);
1014
1015 if (advance_older)
1016 r = sd_journal_previous(j);
1017 else
1018 r = sd_journal_next(j);
1019 if (r < 0)
1020 return r;
1021 else if (r == 0)
1022 return 0; /* End of journal, yay. */
1023
45bc27b6 1024 next_boot = new0(BootId, 1);
596a2329 1025 if (!next_boot)
b56d608e 1026 return -ENOMEM;
f1188074 1027
596a2329 1028 r = sd_journal_get_monotonic_usec(j, NULL, &next_boot->id);
f1188074
ZJS		 1029 if (r < 0)
1030 return r;
1031
596a2329
JJ		 1032 if (read_realtime) {
1033 r = sd_journal_get_realtime_usec(j, &next_boot->first);
1034 if (r < 0)
1035 return r;
1036 }
ea7061e4 1037
596a2329
JJ		 1038 /* Now seek to the last occurrence of this boot ID. */
1039 sd_id128_to_string(next_boot->id, match + 9);
1040 r = sd_journal_add_match(j, match, sizeof(match) - 1);
1041 if (r < 0)
1042 return r;
f1188074 1043
596a2329
JJ		 1044 if (advance_older)
1045 r = sd_journal_seek_head(j);
1046 else
1047 r = sd_journal_seek_tail(j);
1048 if (r < 0)
1049 return r;
f1188074 1050
596a2329
JJ		 1051 if (advance_older)
1052 r = sd_journal_next(j);
1053 else
1054 r = sd_journal_previous(j);
1055 if (r < 0)
1056 return r;
1057 else if (r == 0)
1058 return -ENODATA; /* This shouldn't happen. We just came from this very boot ID. */
f1188074 1059
596a2329
JJ		 1060 if (read_realtime) {
1061 r = sd_journal_get_realtime_usec(j, &next_boot->last);
f1188074 1062 if (r < 0)
596a2329
JJ		 1063 return r;
1064 }
1065
1066 *boot = next_boot;
1067 next_boot = NULL;
9530e0d0 1068
596a2329
JJ		 1069 return 0;
1070}
1071
45bc27b6
LP		 1072static int get_boots(
1073 sd_journal *j,
1074 BootId **boots,
1075 BootId *query_ref_boot,
1076 int ref_boot_offset) {
1077
596a2329
JJ		 1078 bool skip_once;
1079 int r, count = 0;
45bc27b6 1080 BootId *head = NULL, *tail = NULL;
596a2329
JJ		 1081 const bool advance_older = query_ref_boot && ref_boot_offset <= 0;
1082
1083 assert(j);
f1188074 1084
596a2329
JJ		 1085 /* Adjust for the asymmetry that offset 0 is
1086 * the last (and current) boot, while 1 is considered the
1087 * (chronological) first boot in the journal. */
1088 skip_once = query_ref_boot && sd_id128_is_null(query_ref_boot->id) && ref_boot_offset < 0;
1089
1090 /* Advance to the earliest/latest occurrence of our reference
1091 * boot ID (taking our lookup direction into account), so that
1092 * discover_next_boot() can do its job.
1093 * If no reference is given, the journal head/tail will do,
1094 * they're "virtual" boots after all. */
1095 if (query_ref_boot && !sd_id128_is_null(query_ref_boot->id)) {
1096 char match[9+32+1] = "_BOOT_ID=";
1097
1098 sd_journal_flush_matches(j);
1099
1100 sd_id128_to_string(query_ref_boot->id, match + 9);
1101 r = sd_journal_add_match(j, match, sizeof(match) - 1);
f1188074
ZJS		 1102 if (r < 0)
1103 return r;
1104
596a2329
JJ		 1105 if (advance_older)
1106 r = sd_journal_seek_head(j);
1107 else
1108 r = sd_journal_seek_tail(j);
f1188074
ZJS		 1109 if (r < 0)
1110 return r;
1111
596a2329
JJ		 1112 if (advance_older)
1113 r = sd_journal_next(j);
1114 else
1115 r = sd_journal_previous(j);
f1188074
ZJS		 1116 if (r < 0)
1117 return r;
1118 else if (r == 0)
596a2329
JJ		 1119 goto finish;
1120 else if (ref_boot_offset == 0) {
1121 count = 1;
1122 goto finish;
1123 }
1124 } else {
1125 if (advance_older)
1126 r = sd_journal_seek_tail(j);
1127 else
1128 r = sd_journal_seek_head(j);
f1188074
ZJS		 1129 if (r < 0)
1130 return r;
1131
596a2329
JJ		 1132 /* No sd_journal_next/previous here. */
1133 }
f1188074 1134
45bc27b6
LP		 1135 for (;;) {
1136 _cleanup_free_ BootId *current = NULL;
f1188074 1137
596a2329
JJ		 1138 r = discover_next_boot(j, &current, advance_older, !query_ref_boot);
1139 if (r < 0) {
9530e0d0 1140 boot_id_free_all(head);
596a2329 1141 return r;
ea7061e4 1142 }
f1188074 1143
596a2329
JJ		 1144 if (!current)
1145 break;
1146
1147 if (query_ref_boot) {
1148 if (!skip_once)
1149 ref_boot_offset += advance_older ? 1 : -1;
1150 skip_once = false;
1151
1152 if (ref_boot_offset == 0) {
1153 count = 1;
1154 query_ref_boot->id = current->id;
1155 break;
1156 }
1157 } else {
1158 LIST_INSERT_AFTER(boot_list, head, tail, current);
1159 tail = current;
1160 current = NULL;
1161 count++;
1162 }
f1188074
ZJS		 1163 }
1164
596a2329
JJ		 1165finish:
1166 if (boots)
1167 *boots = head;
1168
1169 sd_journal_flush_matches(j);
1170
1171 return count;
ea7061e4
JJ		 1172}
1173
1174static int list_boots(sd_journal *j) {
596a2329 1175 int w, i, count;
9530e0d0 1176 BootId *id, *all_ids;
ea7061e4
JJ		 1177
1178 assert(j);
1179
596a2329 1180 count = get_boots(j, &all_ids, NULL, 0);
b56d608e
LP		 1181 if (count < 0)
1182 return log_error_errno(count, "Failed to determine boots: %m");
1183 if (count == 0)
596a2329 1184 return count;
ea7061e4 1185
ea4b98e6 1186 pager_open(arg_no_pager, arg_pager_end);
f1188074
ZJS		 1187
1188 /* numbers are one less, but we need an extra char for the sign */
1189 w = DECIMAL_STR_WIDTH(count - 1) + 1;
1190
596a2329 1191 i = 0;
9530e0d0 1192 LIST_FOREACH(boot_list, id, all_ids) {
f1188074
ZJS		 1193 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX];
1194
1195 printf("% *i " SD_ID128_FORMAT_STR " %s—%s\n",
1196 w, i - count + 1,
1197 SD_ID128_FORMAT_VAL(id->id),
5ab99e07
LP		 1198 format_timestamp_maybe_utc(a, sizeof(a), id->first),
1199 format_timestamp_maybe_utc(b, sizeof(b), id->last));
596a2329 1200 i++;
d121b396 1201 }
a963990f 1202
9530e0d0
LP		 1203 boot_id_free_all(all_ids);
1204
a331b5e6
JJ		 1205 return 0;
1206}
1207
1208static int add_boot(sd_journal *j) {
1209 char match[9+32+1] = "_BOOT_ID=";
442e2def 1210 int r;
45bc27b6 1211 BootId ref_boot_id = {};
a331b5e6
JJ		 1212
1213 assert(j);
1214
d121b396 1215 if (!arg_boot)
a331b5e6
JJ		 1216 return 0;
1217
442e2def 1218 if (arg_boot_offset == 0 && sd_id128_equal(arg_boot_id, SD_ID128_NULL))
b6741478 1219 return add_match_this_boot(j, arg_machine);
a331b5e6 1220
596a2329
JJ		 1221 ref_boot_id.id = arg_boot_id;
1222 r = get_boots(j, NULL, &ref_boot_id, arg_boot_offset);
1223 assert(r <= 1);
1224 if (r <= 0) {
1225 const char *reason = (r == 0) ? "No such boot ID in journal" : strerror(-r);
1226
1227 if (sd_id128_is_null(arg_boot_id))
c34e9399
JS		 1228 log_error("Data from the specified boot (%+i) is not available: %s",
1229 arg_boot_offset, reason);
d121b396 1230 else
c34e9399
JS		 1231 log_error("Data from the specified boot ("SD_ID128_FORMAT_STR") is not available: %s",
1232 SD_ID128_FORMAT_VAL(arg_boot_id), reason);
596a2329
JJ		 1233
1234 return r == 0 ? -ENODATA : r;
a331b5e6
JJ		 1235 }
1236
596a2329 1237 sd_id128_to_string(ref_boot_id.id, match + 9);
d121b396
ZJS		 1238
1239 r = sd_journal_add_match(j, match, sizeof(match) - 1);
23bbb0de
MS		 1240 if (r < 0)
1241 return log_error_errno(r, "Failed to add match: %m");
a331b5e6
JJ		 1242
1243 r = sd_journal_add_conjunction(j);
1244 if (r < 0)
b56d608e 1245 return log_error_errno(r, "Failed to add conjunction: %m");
a331b5e6
JJ		 1246
1247 return 0;
a963990f
LP		 1248}
1249
99271804
ZJS		 1250static int add_dmesg(sd_journal *j) {
1251 int r;
1252 assert(j);
1253
1254 if (!arg_dmesg)
1255 return 0;
1256
1257 r = sd_journal_add_match(j, "_TRANSPORT=kernel", strlen("_TRANSPORT=kernel"));
23bbb0de
MS		 1258 if (r < 0)
1259 return log_error_errno(r, "Failed to add match: %m");
99271804
ZJS		 1260
1261 r = sd_journal_add_conjunction(j);
1262 if (r < 0)
b56d608e 1263 return log_error_errno(r, "Failed to add conjunction: %m");
99271804
ZJS		 1264
1265 return 0;
1266}
1267
b56d608e
LP		 1268static int get_possible_units(
1269 sd_journal *j,
1270 const char *fields,
1271 char **patterns,
1272 Set **units) {
1273
ea18a4b5
ZJS		 1274 _cleanup_set_free_free_ Set *found;
1275 const char *field;
c3f60ec5 1276 int r;
ea18a4b5 1277
d5099efc 1278 found = set_new(&string_hash_ops);
ea18a4b5 1279 if (!found)
b56d608e 1280 return -ENOMEM;
ea18a4b5
ZJS		 1281
1282 NULSTR_FOREACH(field, fields) {
1283 const void *data;
1284 size_t size;
1285
1286 r = sd_journal_query_unique(j, field);
1287 if (r < 0)
1288 return r;
1289
1290 SD_JOURNAL_FOREACH_UNIQUE(j, data, size) {
1291 char **pattern, *eq;
1292 size_t prefix;
1293 _cleanup_free_ char *u = NULL;
1294
1295 eq = memchr(data, '=', size);
1296 if (eq)
1297 prefix = eq - (char*) data + 1;
1298 else
1299 prefix = 0;
1300
1301 u = strndup((char*) data + prefix, size - prefix);
1302 if (!u)
b56d608e 1303 return -ENOMEM;
ea18a4b5
ZJS		 1304
1305 STRV_FOREACH(pattern, patterns)
1306 if (fnmatch(*pattern, u, FNM_NOESCAPE) == 0) {
1307 log_debug("Matched %s with pattern %s=%s", u, field, *pattern);
1308
1309 r = set_consume(found, u);
1310 u = NULL;
1311 if (r < 0 && r != -EEXIST)
1312 return r;
1313
1314 break;
1315 }
1316 }
1317 }
1318
1319 *units = found;
1320 found = NULL;
1321 return 0;
1322}
1323
1324/* This list is supposed to return the superset of unit names
1325 * possibly matched by rules added with add_matches_for_unit... */
1326#define SYSTEM_UNITS \
1327 "_SYSTEMD_UNIT\0" \
1328 "COREDUMP_UNIT\0" \
1329 "UNIT\0" \
1330 "OBJECT_SYSTEMD_UNIT\0" \
1331 "_SYSTEMD_SLICE\0"
1332
1333/* ... and add_matches_for_user_unit */
1334#define USER_UNITS \
1335 "_SYSTEMD_USER_UNIT\0" \
1336 "USER_UNIT\0" \
1337 "COREDUMP_USER_UNIT\0" \
1338 "OBJECT_SYSTEMD_USER_UNIT\0"
1339
1340static int add_units(sd_journal *j) {
1341 _cleanup_strv_free_ char **patterns = NULL;
1342 int r, count = 0;
b9e40524 1343 char **i;
c3f60ec5
LP		 1344
1345 assert(j);
1346
b9e40524 1347 STRV_FOREACH(i, arg_system_units) {
ea18a4b5
ZJS		 1348 _cleanup_free_ char *u = NULL;
1349
7410616c
LP		 1350 r = unit_name_mangle(*i, UNIT_NAME_GLOB, &u);
1351 if (r < 0)
1352 return r;
ea18a4b5
ZJS		 1353
1354 if (string_is_glob(u)) {
1355 r = strv_push(&patterns, u);
1356 if (r < 0)
1357 return r;
1358 u = NULL;
1359 } else {
1360 r = add_matches_for_unit(j, u);
1361 if (r < 0)
1362 return r;
1363 r = sd_journal_add_disjunction(j);
1364 if (r < 0)
1365 return r;
313cefa1 1366 count++;
ea18a4b5
ZJS		 1367 }
1368 }
1369
1370 if (!strv_isempty(patterns)) {
1371 _cleanup_set_free_free_ Set *units = NULL;
1372 Iterator it;
1373 char *u;
1374
1375 r = get_possible_units(j, SYSTEM_UNITS, patterns, &units);
b9e40524
HH		 1376 if (r < 0)
1377 return r;
ea18a4b5
ZJS		 1378
1379 SET_FOREACH(u, units, it) {
1380 r = add_matches_for_unit(j, u);
1381 if (r < 0)
1382 return r;
1383 r = sd_journal_add_disjunction(j);
1384 if (r < 0)
1385 return r;
313cefa1 1386 count++;
ea18a4b5 1387 }
b9e40524 1388 }
c3f60ec5 1389
97b11eed 1390 patterns = strv_free(patterns);
ea18a4b5 1391
b9e40524 1392 STRV_FOREACH(i, arg_user_units) {
ea18a4b5
ZJS		 1393 _cleanup_free_ char *u = NULL;
1394
7410616c
LP		 1395 r = unit_name_mangle(*i, UNIT_NAME_GLOB, &u);
1396 if (r < 0)
1397 return r;
c3f60ec5 1398
ea18a4b5
ZJS		 1399 if (string_is_glob(u)) {
1400 r = strv_push(&patterns, u);
1401 if (r < 0)
1402 return r;
1403 u = NULL;
1404 } else {
1405 r = add_matches_for_user_unit(j, u, getuid());
1406 if (r < 0)
1407 return r;
1408 r = sd_journal_add_disjunction(j);
1409 if (r < 0)
1410 return r;
313cefa1 1411 count++;
ea18a4b5
ZJS		 1412 }
1413 }
1414
1415 if (!strv_isempty(patterns)) {
1416 _cleanup_set_free_free_ Set *units = NULL;
1417 Iterator it;
1418 char *u;
b9e40524 1419
ea18a4b5 1420 r = get_possible_units(j, USER_UNITS, patterns, &units);
b9e40524
HH		 1421 if (r < 0)
1422 return r;
1423
ea18a4b5
ZJS		 1424 SET_FOREACH(u, units, it) {
1425 r = add_matches_for_user_unit(j, u, getuid());
1426 if (r < 0)
1427 return r;
1428 r = sd_journal_add_disjunction(j);
1429 if (r < 0)
1430 return r;
313cefa1 1431 count++;
ea18a4b5 1432 }
b9e40524 1433 }
c3f60ec5 1434
ea18a4b5
ZJS		 1435 /* Complain if the user request matches but nothing whatsoever was
1436 * found, since otherwise everything would be matched. */
1437 if (!(strv_isempty(arg_system_units) && strv_isempty(arg_user_units)) && count == 0)
1438 return -ENODATA;
1439
cd34b3c6
HH		 1440 r = sd_journal_add_conjunction(j);
1441 if (r < 0)
1442 return r;
1443
c3f60ec5
LP		 1444 return 0;
1445}
1446
941e990d
LP		 1447static int add_priorities(sd_journal *j) {
1448 char match[] = "PRIORITY=0";
1449 int i, r;
941e990d
LP		 1450 assert(j);
1451
1452 if (arg_priorities == 0xFF)
1453 return 0;
1454
1455 for (i = LOG_EMERG; i <= LOG_DEBUG; i++)
1456 if (arg_priorities & (1 << i)) {
1457 match[sizeof(match)-2] = '0' + i;
1458
941e990d 1459 r = sd_journal_add_match(j, match, strlen(match));
23bbb0de
MS		 1460 if (r < 0)
1461 return log_error_errno(r, "Failed to add match: %m");
941e990d
LP		 1462 }
1463
cd34b3c6
HH		 1464 r = sd_journal_add_conjunction(j);
1465 if (r < 0)
b56d608e 1466 return log_error_errno(r, "Failed to add conjunction: %m");
cd34b3c6 1467
941e990d
LP		 1468 return 0;
1469}
1470
73083640
HH		 1471
1472static int add_syslog_identifier(sd_journal *j) {
1473 int r;
1474 char **i;
1475
1476 assert(j);
1477
1478 STRV_FOREACH(i, arg_syslog_identifier) {
1479 char *u;
1480
63c372cb 1481 u = strjoina("SYSLOG_IDENTIFIER=", *i);
73083640
HH		 1482 r = sd_journal_add_match(j, u, 0);
1483 if (r < 0)
1484 return r;
1485 r = sd_journal_add_disjunction(j);
1486 if (r < 0)
1487 return r;
1488 }
1489
1490 r = sd_journal_add_conjunction(j);
1491 if (r < 0)
1492 return r;
1493
1494 return 0;
1495}
1496
7560fffc
LP		 1497static int setup_keys(void) {
1498#ifdef HAVE_GCRYPT
1499 size_t mpk_size, seed_size, state_size, i;
1500 uint8_t *mpk, *seed, *state;
11689d2a 1501 int fd = -1, r;
7560fffc
LP		 1502 sd_id128_t machine, boot;
1503 char *p = NULL, *k = NULL;
baed47c3 1504 struct FSSHeader h;
14d10188 1505 uint64_t n;
b98e3866
SL		 1506 struct stat st;
1507
1508 r = stat("/var/log/journal", &st);
4a62c710
MS		 1509 if (r < 0 && errno != ENOENT && errno != ENOTDIR)
1510 return log_error_errno(errno, "stat(\"%s\") failed: %m", "/var/log/journal");
b98e3866
SL		 1511
1512 if (r < 0 || !S_ISDIR(st.st_mode)) {
1513 log_error("%s is not a directory, must be using persistent logging for FSS.",
1514 "/var/log/journal");
1515 return r < 0 ? -errno : -ENOTDIR;
1516 }
7560fffc
LP		 1517
1518 r = sd_id128_get_machine(&machine);
23bbb0de
MS		 1519 if (r < 0)
1520 return log_error_errno(r, "Failed to get machine ID: %m");
7560fffc
LP		 1521
1522 r = sd_id128_get_boot(&boot);
23bbb0de
MS		 1523 if (r < 0)
1524 return log_error_errno(r, "Failed to get boot ID: %m");
7560fffc 1525
baed47c3 1526 if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss",
7560fffc
LP		 1527 SD_ID128_FORMAT_VAL(machine)) < 0)
1528 return log_oom();
1529
faf9da01
ZJS		 1530 if (arg_force) {
1531 r = unlink(p);
1532 if (r < 0 && errno != ENOENT) {
1533 r = log_error_errno(errno, "unlink(\"%s\") failed: %m", p);
b8547c10
SL		 1534 goto finish;
1535 }
faf9da01
ZJS		 1536 } else if (access(p, F_OK) >= 0) {
1537 log_error("Sealing key file %s exists already. Use --force to recreate.", p);
1538 r = -EEXIST;
1539 goto finish;
7560fffc
LP		 1540 }
1541
baed47c3 1542 if (asprintf(&k, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss.tmp.XXXXXX",
7560fffc
LP		 1543 SD_ID128_FORMAT_VAL(machine)) < 0) {
1544 r = log_oom();
1545 goto finish;
1546 }
1547
1548 mpk_size = FSPRG_mskinbytes(FSPRG_RECOMMENDED_SECPAR);
1549 mpk = alloca(mpk_size);
1550
1551 seed_size = FSPRG_RECOMMENDED_SEEDLEN;
1552 seed = alloca(seed_size);
1553
1554 state_size = FSPRG_stateinbytes(FSPRG_RECOMMENDED_SECPAR);
1555 state = alloca(state_size);
1556
1557 fd = open("/dev/random", O_RDONLY|O_CLOEXEC|O_NOCTTY);
1558 if (fd < 0) {
76ef789d 1559 r = log_error_errno(errno, "Failed to open /dev/random: %m");
7560fffc
LP		 1560 goto finish;
1561 }
1562
1563 log_info("Generating seed...");
a6dcc7e5
ZJS		 1564 r = loop_read_exact(fd, seed, seed_size, true);
1565 if (r < 0) {
1566 log_error_errno(r, "Failed to read random seed: %m");
7560fffc
LP		 1567 goto finish;
1568 }
1569
1570 log_info("Generating key pair...");
1571 FSPRG_GenMK(NULL, mpk, seed, seed_size, FSPRG_RECOMMENDED_SECPAR);
1572
baed47c3 1573 log_info("Generating sealing key...");
7560fffc
LP		 1574 FSPRG_GenState0(state, mpk, seed, seed_size);
1575
baed47c3
LP		 1576 assert(arg_interval > 0);
1577
7560fffc 1578 n = now(CLOCK_REALTIME);
baed47c3 1579 n /= arg_interval;
7560fffc 1580
03e334a1 1581 safe_close(fd);
2d5bdf5b 1582 fd = mkostemp_safe(k, O_WRONLY|O_CLOEXEC);
7560fffc 1583 if (fd < 0) {
709f6e46 1584 r = log_error_errno(fd, "Failed to open %s: %m", k);
7560fffc
LP		 1585 goto finish;
1586 }
1587
f982e6f7
LP		 1588 /* Enable secure remove, exclusion from dump, synchronous
1589 * writing and in-place updating */
1ed8f8c1 1590 r = chattr_fd(fd, FS_SECRM_FL|FS_NODUMP_FL|FS_SYNC_FL|FS_NOCOW_FL, FS_SECRM_FL|FS_NODUMP_FL|FS_SYNC_FL|FS_NOCOW_FL);
11689d2a 1591 if (r < 0)
709f6e46 1592 log_warning_errno(r, "Failed to set file attributes: %m");
f982e6f7 1593
7560fffc
LP		 1594 zero(h);
1595 memcpy(h.signature, "KSHHRHLP", 8);
1596 h.machine_id = machine;
1597 h.boot_id = boot;
1598 h.header_size = htole64(sizeof(h));
baed47c3
LP		 1599 h.start_usec = htole64(n * arg_interval);
1600 h.interval_usec = htole64(arg_interval);
1601 h.fsprg_secpar = htole16(FSPRG_RECOMMENDED_SECPAR);
1602 h.fsprg_state_size = htole64(state_size);
7560fffc 1603
553acb7b
ZJS		 1604 r = loop_write(fd, &h, sizeof(h), false);
1605 if (r < 0) {
1606 log_error_errno(r, "Failed to write header: %m");
7560fffc
LP		 1607 goto finish;
1608 }
1609
553acb7b
ZJS		 1610 r = loop_write(fd, state, state_size, false);
1611 if (r < 0) {
1612 log_error_errno(r, "Failed to write state: %m");
7560fffc
LP		 1613 goto finish;
1614 }
1615
1616 if (link(k, p) < 0) {
76ef789d 1617 r = log_error_errno(errno, "Failed to link file: %m");
7560fffc
LP		 1618 goto finish;
1619 }
1620
8481248b 1621 if (on_tty()) {
7560fffc
LP		 1622 fprintf(stderr,
1623 "\n"
1fc464f6 1624 "The new key pair has been generated. The " ANSI_HIGHLIGHT "secret sealing key" ANSI_NORMAL " has been written to\n"
c05276f2
LP		 1625 "the following local file. This key file is automatically updated when the\n"
1626 "sealing key is advanced. It should not be used on multiple hosts.\n"
7560fffc
LP		 1627 "\n"
1628 "\t%s\n"
1629 "\n"
1fc464f6 1630 "Please write down the following " ANSI_HIGHLIGHT "secret verification key" ANSI_NORMAL ". It should be stored\n"
baed47c3 1631 "at a safe location and should not be saved locally on disk.\n"
1fc464f6 1632 "\n\t" ANSI_HIGHLIGHT_RED, p);
7560fffc
LP		 1633 fflush(stderr);
1634 }
1635 for (i = 0; i < seed_size; i++) {
1636 if (i > 0 && i % 3 == 0)
1637 putchar('-');
1638 printf("%02x", ((uint8_t*) seed)[i]);
1639 }
1640
baed47c3
LP		 1641 printf("/%llx-%llx\n", (unsigned long long) n, (unsigned long long) arg_interval);
1642
8481248b 1643 if (on_tty()) {
f6a971bc 1644 char tsb[FORMAT_TIMESPAN_MAX], *hn;
7560fffc 1645
baed47c3 1646 fprintf(stderr,
1fc464f6 1647 ANSI_NORMAL "\n"
baed47c3 1648 "The sealing key is automatically changed every %s.\n",
2fa4092c 1649 format_timespan(tsb, sizeof(tsb), arg_interval, 0));
f6a971bc
LP		 1650
1651 hn = gethostname_malloc();
1652
1653 if (hn) {
ae691c1d 1654 hostname_cleanup(hn);
adac1c93 1655 fprintf(stderr, "\nThe keys have been generated for host %s/" SD_ID128_FORMAT_STR ".\n", hn, SD_ID128_FORMAT_VAL(machine));
f6a971bc 1656 } else
adac1c93 1657 fprintf(stderr, "\nThe keys have been generated for host " SD_ID128_FORMAT_STR ".\n", SD_ID128_FORMAT_VAL(machine));
f6a971bc
LP		 1658
1659#ifdef HAVE_QRENCODE
cf5a3432 1660 /* If this is not an UTF-8 system don't print any QR codes */
09017585 1661 if (is_locale_utf8()) {
cf5a3432
LP		 1662 fputs("\nTo transfer the verification key to your phone please scan the QR code below:\n\n", stderr);
1663 print_qr_code(stderr, seed, seed_size, n, arg_interval, hn, machine);
1664 }
f6a971bc
LP		 1665#endif
1666 free(hn);
baed47c3 1667 }
7560fffc
LP		 1668
1669 r = 0;
1670
1671finish:
03e334a1 1672 safe_close(fd);
7560fffc
LP		 1673
1674 if (k) {
1675 unlink(k);
1676 free(k);
1677 }
1678
1679 free(p);
1680
1681 return r;
1682#else
feb12d3e 1683 log_error("Forward-secure sealing not available.");
15411c0c 1684 return -EOPNOTSUPP;
7560fffc
LP		 1685#endif
1686}
1687
beec0085
LP		 1688static int verify(sd_journal *j) {
1689 int r = 0;
1690 Iterator i;
1691 JournalFile *f;
1692
1693 assert(j);
1694
cedb42bb
LP		 1695 log_show_color(true);
1696
c1f906bd 1697 ORDERED_HASHMAP_FOREACH(f, j->files, i) {
beec0085 1698 int k;
a7f7d1bd 1699 usec_t first = 0, validated = 0, last = 0;
beec0085 1700
56e81f7c 1701#ifdef HAVE_GCRYPT
feb12d3e 1702 if (!arg_verify_key && JOURNAL_HEADER_SEALED(f->header))
cedb42bb 1703 log_notice("Journal file %s has sealing enabled but verification key has not been passed using --verify-key=.", f->path);
56e81f7c 1704#endif
4da416aa 1705
2a7b539a 1706 k = journal_file_verify(f, arg_verify_key, &first, &validated, &last, true);
56e81f7c 1707 if (k == -EINVAL) {
baed47c3 1708 /* If the key was invalid give up right-away. */
56e81f7c
LP		 1709 return k;
1710 } else if (k < 0) {
e53fc357 1711 log_warning_errno(k, "FAIL: %s (%m)", f->path);
56e81f7c 1712 r = k;
6c7be122
LP		 1713 } else {
1714 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX], c[FORMAT_TIMESPAN_MAX];
beec0085 1715 log_info("PASS: %s", f->path);
6c7be122 1716
c0ca7aee 1717 if (arg_verify_key && JOURNAL_HEADER_SEALED(f->header)) {
2a7b539a 1718 if (validated > 0) {
c0ca7aee 1719 log_info("=> Validated from %s to %s, final %s entries not sealed.",
5ab99e07
LP		 1720 format_timestamp_maybe_utc(a, sizeof(a), first),
1721 format_timestamp_maybe_utc(b, sizeof(b), validated),
2fa4092c 1722 format_timespan(c, sizeof(c), last > validated ? last - validated : 0, 0));
2a7b539a 1723 } else if (last > 0)
c0ca7aee 1724 log_info("=> No sealing yet, %s of entries not sealed.",
2fa4092c 1725 format_timespan(c, sizeof(c), last - first, 0));
c0ca7aee
LP		 1726 else
1727 log_info("=> No sealing yet, no entries in file.");
1728 }
6c7be122 1729 }
beec0085
LP		 1730 }
1731
1732 return r;
1733}
1734
6fe391c5 1735static int access_check_var_log_journal(sd_journal *j) {
e346512c 1736#ifdef HAVE_ACL
6fe391c5 1737 _cleanup_strv_free_ char **g = NULL;
e346512c
LP		 1738 const char* dir;
1739#endif
6fe391c5
ZJS		 1740 int r;
1741
1742 assert(j);
1743
e346512c
LP		 1744 if (arg_quiet)
1745 return 0;
05c18530 1746
e346512c
LP		 1747 /* If we are root, we should have access, don't warn. */
1748 if (getuid() == 0)
1749 return 0;
05c18530 1750
e346512c
LP		 1751 /* If we are in the 'systemd-journal' group, we should have
1752 * access too. */
1753 r = in_group("systemd-journal");
1754 if (r < 0)
1755 return log_error_errno(r, "Failed to check if we are in the 'systemd-journal' group: %m");
1756 if (r > 0)
1757 return 0;
15804ceb 1758
e346512c
LP		 1759#ifdef HAVE_ACL
1760 if (laccess("/run/log/journal", F_OK) >= 0)
1761 dir = "/run/log/journal";
1762 else
1763 dir = "/var/log/journal";
1764
1765 /* If we are in any of the groups listed in the journal ACLs,
1766 * then all is good, too. Let's enumerate all groups from the
1767 * default ACL of the directory, which generally should allow
1768 * access to most journal files too. */
1769 r = acl_search_groups(dir, &g);
1770 if (r < 0)
1771 return log_error_errno(r, "Failed to search journal ACL: %m");
1772 if (r > 0)
1773 return 0;
4468addc 1774
e346512c
LP		 1775 /* Print a pretty list, if there were ACLs set. */
1776 if (!strv_isempty(g)) {
1777 _cleanup_free_ char *s = NULL;
4468addc 1778
e346512c
LP		 1779 /* Thre are groups in the ACL, let's list them */
1780 r = strv_extend(&g, "systemd-journal");
1781 if (r < 0)
1782 return log_oom();
6fe391c5 1783
e346512c
LP		 1784 strv_sort(g);
1785 strv_uniq(g);
6fe391c5 1786
e346512c
LP		 1787 s = strv_join(g, "', '");
1788 if (!s)
1789 return log_oom();
6fe391c5 1790
e346512c
LP		 1791 log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
1792 " Users in groups '%s' can see all messages.\n"
1793 " Pass -q to turn off this notice.", s);
1794 return 1;
6fe391c5 1795 }
e346512c 1796#endif
4468addc 1797
e346512c
LP		 1798 /* If no ACLs were found, print a short version of the message. */
1799 log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
1800 " Users in the 'systemd-journal' group can see all messages. Pass -q to\n"
1801 " turn off this notice.");
1802
1803 return 1;
6fe391c5 1804}
4468addc 1805
6fe391c5 1806static int access_check(sd_journal *j) {
6fe391c5 1807 Iterator it;
3ac251b8 1808 void *code;
5768d259 1809 char *path;
6fe391c5 1810 int r = 0;
4468addc 1811
6fe391c5 1812 assert(j);
4468addc 1813
5768d259 1814 if (hashmap_isempty(j->errors)) {
c1f906bd 1815 if (ordered_hashmap_isempty(j->files))
3ac251b8 1816 log_notice("No journal files were found.");
e346512c 1817
6fe391c5
ZJS		 1818 return 0;
1819 }
4468addc 1820
5768d259 1821 if (hashmap_contains(j->errors, INT_TO_PTR(-EACCES))) {
e346512c 1822 (void) access_check_var_log_journal(j);
3ac251b8 1823
e346512c
LP		 1824 if (ordered_hashmap_isempty(j->files))
1825 r = log_error_errno(EACCES, "No journal files were opened due to insufficient permissions.");
6fe391c5 1826 }
15804ceb 1827
5768d259 1828 HASHMAP_FOREACH_KEY(path, code, j->errors, it) {
3ac251b8
LP		 1829 int err;
1830
4f52b822 1831 err = abs(PTR_TO_INT(code));
3ac251b8 1832
5768d259
LP		 1833 switch (err) {
1834 case EACCES:
e346512c
LP		 1835 continue;
1836
5768d259
LP		 1837 case ENODATA:
1838 log_warning_errno(err, "Journal file %s is truncated, ignoring file.", path);
1839 break;
1840
1841 case EPROTONOSUPPORT:
1842 log_warning_errno(err, "Journal file %s uses an unsupported feature, ignoring file.", path);
1843 break;
1844
1845 case EBADMSG:
1846 log_warning_errno(err, "Journal file %s corrupted, ignoring file.", path);
1847 break;
1848
1849 default:
0f748872 1850 log_warning_errno(err, "An error was encountered while opening journal file or directory %s, ignoring file: %m", path);
5768d259
LP		 1851 break;
1852 }
6fe391c5
ZJS		 1853 }
1854
6fe391c5 1855 return r;
15804ceb
LP		 1856}
1857
74055aa7 1858static int flush_to_var(void) {
4afd3348
LP		 1859 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1860 _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
74055aa7
LP		 1861 _cleanup_close_ int watch_fd = -1;
1862 int r;
1863
176ee07b
LP		 1864 if (arg_machine) {
1865 log_error("--flush is not supported in conjunction with --machine=.");
1866 return -EOPNOTSUPP;
1867 }
1868
74055aa7
LP		 1869 /* Quick exit */
1870 if (access("/run/systemd/journal/flushed", F_OK) >= 0)
1871 return 0;
1872
1873 /* OK, let's actually do the full logic, send SIGUSR1 to the
1874 * daemon and set up inotify to wait for the flushed file to appear */
266f3e26 1875 r = bus_connect_system_systemd(&bus);
23bbb0de
MS		 1876 if (r < 0)
1877 return log_error_errno(r, "Failed to get D-Bus connection: %m");
74055aa7
LP		 1878
1879 r = sd_bus_call_method(
1880 bus,
1881 "org.freedesktop.systemd1",
1882 "/org/freedesktop/systemd1",
1883 "org.freedesktop.systemd1.Manager",
1884 "KillUnit",
1885 &error,
1886 NULL,
1887 "ssi", "systemd-journald.service", "main", SIGUSR1);
94b65516
LP		 1888 if (r < 0)
1889 return log_error_errno(r, "Failed to kill journal service: %s", bus_error_message(&error, r));
74055aa7
LP		 1890
1891 mkdir_p("/run/systemd/journal", 0755);
1892
1893 watch_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
4a62c710
MS		 1894 if (watch_fd < 0)
1895 return log_error_errno(errno, "Failed to create inotify watch: %m");
74055aa7
LP		 1896
1897 r = inotify_add_watch(watch_fd, "/run/systemd/journal", IN_CREATE|IN_DONT_FOLLOW|IN_ONLYDIR);
4a62c710
MS		 1898 if (r < 0)
1899 return log_error_errno(errno, "Failed to watch journal directory: %m");
74055aa7
LP		 1900
1901 for (;;) {
1902 if (access("/run/systemd/journal/flushed", F_OK) >= 0)
1903 break;
1904
4a62c710 1905 if (errno != ENOENT)
f131770b 1906 return log_error_errno(errno, "Failed to check for existence of /run/systemd/journal/flushed: %m");
74055aa7
LP		 1907
1908 r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY);
23bbb0de
MS		 1909 if (r < 0)
1910 return log_error_errno(r, "Failed to wait for event: %m");
74055aa7
LP		 1911
1912 r = flush_fd(watch_fd);
23bbb0de
MS		 1913 if (r < 0)
1914 return log_error_errno(r, "Failed to flush inotify events: %m");
74055aa7
LP		 1915 }
1916
1917 return 0;
1918}
1919
dbd6e31c 1920static int send_signal_and_wait(int sig, const char *watch_path) {
4afd3348 1921 _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
94b65516
LP		 1922 _cleanup_close_ int watch_fd = -1;
1923 usec_t start;
1924 int r;
1925
176ee07b
LP		 1926 if (arg_machine) {
1927 log_error("--sync and --rotate are not supported in conjunction with --machine=.");
1928 return -EOPNOTSUPP;
1929 }
1930
33d52ab9 1931 start = now(CLOCK_MONOTONIC);
94b65516 1932
dbd6e31c
LP		 1933 /* This call sends the specified signal to journald, and waits
1934 * for acknowledgment by watching the mtime of the specified
1935 * flag file. This is used to trigger syncing or rotation and
1936 * then wait for the operation to complete. */
94b65516
LP		 1937
1938 for (;;) {
33d52ab9 1939 usec_t tstamp;
94b65516
LP		 1940
1941 /* See if a sync happened by now. */
33d52ab9
LP		 1942 r = read_timestamp_file(watch_path, &tstamp);
1943 if (r < 0 && r != -ENOENT)
1944 return log_error_errno(errno, "Failed to read %s: %m", watch_path);
1945 if (r >= 0 && tstamp >= start)
1946 return 0;
94b65516
LP		 1947
1948 /* Let's ask for a sync, but only once. */
1949 if (!bus) {
4afd3348 1950 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
94b65516
LP		 1951
1952 r = bus_connect_system_systemd(&bus);
1953 if (r < 0)
1954 return log_error_errno(r, "Failed to get D-Bus connection: %m");
1955
1956 r = sd_bus_call_method(
1957 bus,
1958 "org.freedesktop.systemd1",
1959 "/org/freedesktop/systemd1",
1960 "org.freedesktop.systemd1.Manager",
1961 "KillUnit",
1962 &error,
1963 NULL,
dbd6e31c 1964 "ssi", "systemd-journald.service", "main", sig);
94b65516
LP		 1965 if (r < 0)
1966 return log_error_errno(r, "Failed to kill journal service: %s", bus_error_message(&error, r));
1967
1968 continue;
1969 }
1970
1971 /* Let's install the inotify watch, if we didn't do that yet. */
1972 if (watch_fd < 0) {
1973
1974 mkdir_p("/run/systemd/journal", 0755);
1975
1976 watch_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
1977 if (watch_fd < 0)
1978 return log_error_errno(errno, "Failed to create inotify watch: %m");
1979
33d52ab9 1980 r = inotify_add_watch(watch_fd, "/run/systemd/journal", IN_MOVED_TO|IN_DONT_FOLLOW|IN_ONLYDIR);
94b65516
LP		 1981 if (r < 0)
1982 return log_error_errno(errno, "Failed to watch journal directory: %m");
1983
1984 /* Recheck the flag file immediately, so that we don't miss any event since the last check. */
1985 continue;
1986 }
1987
1988 /* OK, all preparatory steps done, let's wait until
1989 * inotify reports an event. */
1990
1991 r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY);
1992 if (r < 0)
1993 return log_error_errno(r, "Failed to wait for event: %m");
1994
1995 r = flush_fd(watch_fd);
1996 if (r < 0)
1997 return log_error_errno(r, "Failed to flush inotify events: %m");
1998 }
1999
2000 return 0;
2001}
2002
dbd6e31c
LP		 2003static int rotate(void) {
2004 return send_signal_and_wait(SIGUSR2, "/run/systemd/journal/rotated");
2005}
2006
2007static int sync_journal(void) {
2008 return send_signal_and_wait(SIGRTMIN+1, "/run/systemd/journal/synced");
2009}
2010
a963990f
LP		 2011int main(int argc, char *argv[]) {
2012 int r;
4afd3348 2013 _cleanup_(sd_journal_closep) sd_journal *j = NULL;
a963990f 2014 bool need_seek = false;
14a65d65 2015 sd_id128_t previous_boot_id;
67e04a48
ZJS		 2016 bool previous_boot_id_valid = false, first_line = true;
2017 int n_shown = 0;
94e0bd7d 2018 bool ellipsized = false;
a963990f 2019
a9cdc94f 2020 setlocale(LC_ALL, "");
a963990f
LP		 2021 log_parse_environment();
2022 log_open();
2023
2024 r = parse_argv(argc, argv);
2025 if (r <= 0)
2026 goto finish;
2027
ed757c0c 2028 signal(SIGWINCH, columns_lines_cache_reset);
2cf4172a 2029 sigbus_install();
ed757c0c 2030
de45d726
LP		 2031 /* Increase max number of open files to 16K if we can, we
2032 * might needs this when browsing journal files, which might
2033 * be split up into many files. */
2034 setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(16384));
2035
a020b3b3 2036 switch (arg_action) {
94b65516 2037
a020b3b3
LP		 2038 case ACTION_NEW_ID128:
2039 r = generate_new_id128();
e3fdfb49 2040 goto finish;
e3fdfb49 2041
a020b3b3 2042 case ACTION_SETUP_KEYS:
7560fffc
LP		 2043 r = setup_keys();
2044 goto finish;
844ec79b 2045
a020b3b3
LP		 2046 case ACTION_LIST_CATALOG:
2047 case ACTION_DUMP_CATALOG:
2048 case ACTION_UPDATE_CATALOG: {
0c6ea3a4
ZJS		 2049 _cleanup_free_ char *database;
2050
2051 database = path_join(arg_root, CATALOG_DATABASE, NULL);
2052 if (!database) {
2053 r = log_oom();
2054 goto finish;
13cbf3a5
ZJS		 2055 }
2056
844ec79b 2057 if (arg_action == ACTION_UPDATE_CATALOG) {
13cbf3a5 2058 r = catalog_update(database, arg_root, catalog_file_dirs);
844ec79b 2059 if (r < 0)
da927ba9 2060 log_error_errno(r, "Failed to list catalog: %m");
844ec79b
ZJS		 2061 } else {
2062 bool oneline = arg_action == ACTION_LIST_CATALOG;
2063
ea4b98e6 2064 pager_open(arg_no_pager, arg_pager_end);
a020b3b3 2065
844ec79b 2066 if (optind < argc)
a020b3b3 2067 r = catalog_list_items(stdout, database, oneline, argv + optind);
844ec79b 2068 else
13cbf3a5 2069 r = catalog_list(stdout, database, oneline);
844ec79b 2070 if (r < 0)
da927ba9 2071 log_error_errno(r, "Failed to list catalog: %m");
844ec79b 2072 }
d4205751 2073
d4205751
LP		 2074 goto finish;
2075 }
2076
a020b3b3
LP		 2077 case ACTION_FLUSH:
2078 r = flush_to_var();
2079 goto finish;
2080
2081 case ACTION_SYNC:
2082 r = sync_journal();
2083 goto finish;
2084
2085 case ACTION_ROTATE:
2086 r = rotate();
2087 goto finish;
2088
2089 case ACTION_SHOW:
2090 case ACTION_PRINT_HEADER:
2091 case ACTION_VERIFY:
2092 case ACTION_DISK_USAGE:
2093 case ACTION_LIST_BOOTS:
2094 case ACTION_VACUUM:
69e714f3
LP		 2095 case ACTION_LIST_FIELDS:
2096 case ACTION_LIST_FIELD_NAMES:
a020b3b3
LP		 2097 /* These ones require access to the journal files, continue below. */
2098 break;
2099
2100 default:
2101 assert_not_reached("Unknown action");
2102 }
2103
a963990f 2104 if (arg_directory)
3f3a438f 2105 r = sd_journal_open_directory(&j, arg_directory, arg_journal_type);
8d98da3f
ZJS		 2106 else if (arg_file)
2107 r = sd_journal_open_files(&j, (const char**) arg_file, 0);
b6741478
LP		 2108 else if (arg_machine)
2109 r = sd_journal_open_container(&j, arg_machine, 0);
a963990f 2110 else
3f3a438f 2111 r = sd_journal_open(&j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type);
a963990f 2112 if (r < 0) {
a020b3b3 2113 log_error_errno(r, "Failed to open %s: %m", arg_directory ?: arg_file ? "files" : "journal");
909dea0c 2114 goto finish;
a963990f
LP		 2115 }
2116
6fe391c5
ZJS		 2117 r = access_check(j);
2118 if (r < 0)
909dea0c 2119 goto finish;
6fe391c5 2120
a020b3b3 2121 switch (arg_action) {
beec0085 2122
a020b3b3
LP		 2123 case ACTION_NEW_ID128:
2124 case ACTION_SETUP_KEYS:
2125 case ACTION_LIST_CATALOG:
2126 case ACTION_DUMP_CATALOG:
2127 case ACTION_UPDATE_CATALOG:
2128 case ACTION_FLUSH:
2129 case ACTION_SYNC:
2130 case ACTION_ROTATE:
2131 assert_not_reached("Unexpected action.");
2132
2133 case ACTION_PRINT_HEADER:
dca6219e 2134 journal_print_header(j);
909dea0c
LP		 2135 r = 0;
2136 goto finish;
dca6219e 2137
a020b3b3
LP		 2138 case ACTION_VERIFY:
2139 r = verify(j);
2140 goto finish;
2141
2142 case ACTION_DISK_USAGE: {
39883f62 2143 uint64_t bytes = 0;
a1a03e30
LP		 2144 char sbytes[FORMAT_BYTES_MAX];
2145
2146 r = sd_journal_get_usage(j, &bytes);
2147 if (r < 0)
909dea0c 2148 goto finish;
a1a03e30 2149
dbd2a83f 2150 printf("Archived and active journals take up %s on disk.\n",
763c7aa2 2151 format_bytes(sbytes, sizeof(sbytes), bytes));
909dea0c 2152 goto finish;
a1a03e30
LP		 2153 }
2154
a020b3b3
LP		 2155 case ACTION_LIST_BOOTS:
2156 r = list_boots(j);
2157 goto finish;
2158
2159 case ACTION_VACUUM: {
dbd2a83f
LP		 2160 Directory *d;
2161 Iterator i;
2162
2163 HASHMAP_FOREACH(d, j->directories_by_path, i) {
2164 int q;
2165
2166 if (d->is_root)
2167 continue;
2168
8580d1f7 2169 q = journal_directory_vacuum(d->path, arg_vacuum_size, arg_vacuum_n_files, arg_vacuum_time, NULL, true);
dbd2a83f 2170 if (q < 0) {
8580d1f7 2171 log_error_errno(q, "Failed to vacuum %s: %m", d->path);
dbd2a83f
LP		 2172 r = q;
2173 }
2174 }
2175
909dea0c 2176 goto finish;
dbd2a83f
LP		 2177 }
2178
69e714f3
LP		 2179 case ACTION_LIST_FIELD_NAMES: {
2180 const char *field;
2181
2182 SD_JOURNAL_FOREACH_FIELD(j, field) {
2183 printf("%s\n", field);
313cefa1 2184 n_shown++;
69e714f3
LP		 2185 }
2186
2187 r = 0;
2188 goto finish;
2189 }
2190
a020b3b3 2191 case ACTION_SHOW:
69e714f3 2192 case ACTION_LIST_FIELDS:
a020b3b3
LP		 2193 break;
2194
2195 default:
2196 assert_not_reached("Unknown action");
f1188074
ZJS		 2197 }
2198
0f1a9a83
JS		 2199 if (arg_boot_offset != 0 &&
2200 sd_journal_has_runtime_files(j) > 0 &&
2201 sd_journal_has_persistent_files(j) == 0) {
2202 log_info("Specifying boot ID has no effect, no persistent journal was found");
2203 r = 0;
2204 goto finish;
2205 }
a331b5e6
JJ		 2206 /* add_boot() must be called first!
2207 * It may need to seek the journal to find parent boot IDs. */
2208 r = add_boot(j);
a963990f 2209 if (r < 0)
909dea0c 2210 goto finish;
a963990f 2211
99271804
ZJS		 2212 r = add_dmesg(j);
2213 if (r < 0)
909dea0c 2214 goto finish;
99271804 2215
b9e40524 2216 r = add_units(j);
ea18a4b5 2217 if (r < 0) {
da927ba9 2218 log_error_errno(r, "Failed to add filter for units: %m");
909dea0c 2219 goto finish;
ea18a4b5 2220 }
c3f60ec5 2221
73083640
HH		 2222 r = add_syslog_identifier(j);
2223 if (r < 0) {
da927ba9 2224 log_error_errno(r, "Failed to add filter for syslog identifiers: %m");
909dea0c 2225 goto finish;
73083640
HH		 2226 }
2227
cd34b3c6 2228 r = add_priorities(j);
b56d608e 2229 if (r < 0)
909dea0c 2230 goto finish;
a963990f 2231
cd34b3c6 2232 r = add_matches(j, argv + optind);
b56d608e 2233 if (r < 0)
909dea0c 2234 goto finish;
941e990d 2235
553d2243 2236 if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) {
4ad16808
ZJS		 2237 _cleanup_free_ char *filter;
2238
2239 filter = journal_make_match_string(j);
b56d608e
LP		 2240 if (!filter)
2241 return log_oom();
2242
4ad16808
ZJS		 2243 log_debug("Journal filter: %s", filter);
2244 }
67e04a48 2245
69e714f3 2246 if (arg_action == ACTION_LIST_FIELDS) {
15119c16
LP		 2247 const void *data;
2248 size_t size;
2249
69e714f3
LP		 2250 assert(arg_field);
2251
21ae4593
ZJS		 2252 r = sd_journal_set_data_threshold(j, 0);
2253 if (r < 0) {
b56d608e 2254 log_error_errno(r, "Failed to unset data size threshold: %m");
909dea0c 2255 goto finish;
21ae4593
ZJS		 2256 }
2257
15119c16
LP		 2258 r = sd_journal_query_unique(j, arg_field);
2259 if (r < 0) {
da927ba9 2260 log_error_errno(r, "Failed to query unique data objects: %m");
909dea0c 2261 goto finish;
15119c16
LP		 2262 }
2263
2264 SD_JOURNAL_FOREACH_UNIQUE(j, data, size) {
2265 const void *eq;
2266
67e04a48 2267 if (arg_lines >= 0 && n_shown >= arg_lines)
fd6e8875
LP		 2268 break;
2269
15119c16
LP		 2270 eq = memchr(data, '=', size);
2271 if (eq)
2272 printf("%.*s\n", (int) (size - ((const uint8_t*) eq - (const uint8_t*) data + 1)), (const char*) eq + 1);
2273 else
2274 printf("%.*s\n", (int) size, (const char*) data);
fd6e8875 2275
313cefa1 2276 n_shown++;
15119c16
LP		 2277 }
2278
909dea0c
LP		 2279 r = 0;
2280 goto finish;
15119c16
LP		 2281 }
2282
8d98da3f
ZJS		 2283 /* Opening the fd now means the first sd_journal_wait() will actually wait */
2284 if (arg_follow) {
2285 r = sd_journal_get_fd(j);
b56d608e
LP		 2286 if (r < 0) {
2287 log_error_errno(r, "Failed to get journal fd: %m");
909dea0c 2288 goto finish;
b56d608e 2289 }
8d98da3f
ZJS		 2290 }
2291
248fc619 2292 if (arg_cursor || arg_after_cursor) {
eacbb4d3 2293 r = sd_journal_seek_cursor(j, arg_cursor ?: arg_after_cursor);
08984293 2294 if (r < 0) {
da927ba9 2295 log_error_errno(r, "Failed to seek to cursor: %m");
909dea0c 2296 goto finish;
08984293 2297 }
909dea0c 2298
d89d6c86 2299 if (!arg_reverse)
248fc619 2300 r = sd_journal_next_skip(j, 1 + !!arg_after_cursor);
d89d6c86 2301 else
248fc619
ZJS		 2302 r = sd_journal_previous_skip(j, 1 + !!arg_after_cursor);
2303
8ee8e536 2304 if (arg_after_cursor && r < 2) {
248fc619 2305 /* We couldn't find the next entry after the cursor. */
8ee8e536
WD		 2306 if (arg_follow)
2307 need_seek = true;
2308 else
2309 arg_lines = 0;
2310 }
08984293 2311
d89d6c86 2312 } else if (arg_since_set && !arg_reverse) {
cfbc22ab 2313 r = sd_journal_seek_realtime_usec(j, arg_since);
8f14c832 2314 if (r < 0) {
da927ba9 2315 log_error_errno(r, "Failed to seek to date: %m");
909dea0c 2316 goto finish;
8f14c832 2317 }
8f14c832
LP		 2318 r = sd_journal_next(j);
2319
d89d6c86
LN		 2320 } else if (arg_until_set && arg_reverse) {
2321 r = sd_journal_seek_realtime_usec(j, arg_until);
2322 if (r < 0) {
da927ba9 2323 log_error_errno(r, "Failed to seek to date: %m");
909dea0c 2324 goto finish;
d89d6c86
LN		 2325 }
2326 r = sd_journal_previous(j);
2327
67e04a48 2328 } else if (arg_lines >= 0) {
2100675e
LP		 2329 r = sd_journal_seek_tail(j);
2330 if (r < 0) {
da927ba9 2331 log_error_errno(r, "Failed to seek to tail: %m");
909dea0c 2332 goto finish;
2100675e
LP		 2333 }
2334
2335 r = sd_journal_previous_skip(j, arg_lines);
8f14c832 2336
d89d6c86
LN		 2337 } else if (arg_reverse) {
2338 r = sd_journal_seek_tail(j);
2339 if (r < 0) {
da927ba9 2340 log_error_errno(r, "Failed to seek to tail: %m");
909dea0c 2341 goto finish;
d89d6c86
LN		 2342 }
2343
2344 r = sd_journal_previous(j);
2345
2100675e
LP		 2346 } else {
2347 r = sd_journal_seek_head(j);
2348 if (r < 0) {
da927ba9 2349 log_error_errno(r, "Failed to seek to head: %m");
909dea0c 2350 goto finish;
2100675e 2351 }
6f003b43
LP		 2352
2353 r = sd_journal_next(j);
2354 }
2355
2356 if (r < 0) {
da927ba9 2357 log_error_errno(r, "Failed to iterate through journal: %m");
909dea0c 2358 goto finish;
50f20cfd 2359 }
02ab86c7 2360 if (r == 0) {
c51e1a96
SW		 2361 if (arg_follow)
2362 need_seek = true;
2363 else {
bfcb7c5f
EV		 2364 if (!arg_quiet)
2365 printf("-- No entries --\n");
c51e1a96
SW		 2366 goto finish;
2367 }
02ab86c7 2368 }
87d2c1ff 2369
faf5077f 2370 if (!arg_follow)
ea4b98e6 2371 pager_open(arg_no_pager, arg_pager_end);
0d43c694 2372
cfbc22ab
LP		 2373 if (!arg_quiet) {
2374 usec_t start, end;
2375 char start_buf[FORMAT_TIMESTAMP_MAX], end_buf[FORMAT_TIMESTAMP_MAX];
2376
2377 r = sd_journal_get_cutoff_realtime_usec(j, &start, &end);
2378 if (r < 0) {
da927ba9 2379 log_error_errno(r, "Failed to get cutoff: %m");
cfbc22ab
LP		 2380 goto finish;
2381 }
2382
2383 if (r > 0) {
2384 if (arg_follow)
9048b11f 2385 printf("-- Logs begin at %s. --\n",
5ab99e07 2386 format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start));
cfbc22ab 2387 else
9048b11f 2388 printf("-- Logs begin at %s, end at %s. --\n",
5ab99e07
LP		 2389 format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start),
2390 format_timestamp_maybe_utc(end_buf, sizeof(end_buf), end));
cfbc22ab
LP		 2391 }
2392 }
2393
50f20cfd 2394 for (;;) {
67e04a48 2395 while (arg_lines < 0 || n_shown < arg_lines || (arg_follow && !first_line)) {
cfbc22ab
LP		 2396 int flags;
2397
6f003b43 2398 if (need_seek) {
99613ec5 2399 if (!arg_reverse)
d89d6c86
LN		 2400 r = sd_journal_next(j);
2401 else
2402 r = sd_journal_previous(j);
6f003b43 2403 if (r < 0) {
da927ba9 2404 log_error_errno(r, "Failed to iterate through journal: %m");
6f003b43
LP		 2405 goto finish;
2406 }
a72b6353
ZJS		 2407 if (r == 0)
2408 break;
0d43c694
LP		 2409 }
2410
d89d6c86 2411 if (arg_until_set && !arg_reverse) {
cfbc22ab
LP		 2412 usec_t usec;
2413
2414 r = sd_journal_get_realtime_usec(j, &usec);
2415 if (r < 0) {
da927ba9 2416 log_error_errno(r, "Failed to determine timestamp: %m");
cfbc22ab
LP		 2417 goto finish;
2418 }
3ba09ee8
PF		 2419 if (usec > arg_until)
2420 goto finish;
cfbc22ab
LP		 2421 }
2422
d89d6c86
LN		 2423 if (arg_since_set && arg_reverse) {
2424 usec_t usec;
2425
2426 r = sd_journal_get_realtime_usec(j, &usec);
2427 if (r < 0) {
da927ba9 2428 log_error_errno(r, "Failed to determine timestamp: %m");
d89d6c86
LN		 2429 goto finish;
2430 }
2431 if (usec < arg_since)
2432 goto finish;
2433 }
2434
4bed2485 2435 if (!arg_merge && !arg_quiet) {
cd931c0a 2436 sd_id128_t boot_id;
14a65d65 2437
cd931c0a
LP		 2438 r = sd_journal_get_monotonic_usec(j, NULL, &boot_id);
2439 if (r >= 0) {
2440 if (previous_boot_id_valid &&
2441 !sd_id128_equal(boot_id, previous_boot_id))
0b5a519c 2442 printf("%s-- Reboot --%s\n",
1fc464f6 2443 ansi_highlight(), ansi_normal());
cd931c0a
LP		 2444
2445 previous_boot_id = boot_id;
2446 previous_boot_id_valid = true;
2447 }
14a65d65
LP		 2448 }
2449
cfbc22ab 2450 flags =
cd4b13e0 2451 arg_all * OUTPUT_SHOW_ALL |
2b8f6883 2452 arg_full * OUTPUT_FULL_WIDTH |
40c9fe4c 2453 colors_enabled() * OUTPUT_COLOR |
9fd29044 2454 arg_catalog * OUTPUT_CATALOG |
991e274b
LP		 2455 arg_utc * OUTPUT_UTC |
2456 arg_no_hostname * OUTPUT_NO_HOSTNAME;
cfbc22ab 2457
94e0bd7d 2458 r = output_journal(stdout, j, arg_output, 0, flags, &ellipsized);
a72b6353
ZJS		 2459 need_seek = true;
2460 if (r == -EADDRNOTAVAIL)
2461 break;
2462 else if (r < 0 || ferror(stdout))
72f59706 2463 goto finish;
6f003b43 2464
cfbc22ab 2465 n_shown++;
87d2c1ff
LP		 2466 }
2467
248fc619
ZJS		 2468 if (!arg_follow) {
2469 if (arg_show_cursor) {
2470 _cleanup_free_ char *cursor = NULL;
2471
2472 r = sd_journal_get_cursor(j, &cursor);
2473 if (r < 0 && r != -EADDRNOTAVAIL)
da927ba9 2474 log_error_errno(r, "Failed to get cursor: %m");
248fc619
ZJS		 2475 else if (r >= 0)
2476 printf("-- cursor: %s\n", cursor);
2477 }
2478
50f20cfd 2479 break;
248fc619 2480 }
50f20cfd 2481
e02d1cf7 2482 r = sd_journal_wait(j, (uint64_t) -1);
50f20cfd 2483 if (r < 0) {
da927ba9 2484 log_error_errno(r, "Couldn't wait for journal event: %m");
50f20cfd
LP		 2485 goto finish;
2486 }
67e04a48
ZJS		 2487
2488 first_line = false;
de190aef 2489 }
87d2c1ff
LP		 2490
2491finish:
0d43c694
LP		 2492 pager_close();
2493
a36b8deb
ZJS		 2494 strv_free(arg_file);
2495
d52da205
LP		 2496 strv_free(arg_syslog_identifier);
2497 strv_free(arg_system_units);
2498 strv_free(arg_user_units);
2499
0f03c2a4
LP		 2500 free(arg_root);
2501
3fbf9cbb 2502 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
87d2c1ff 2503}
Unnamed repository; edit this file 'description' to name the repository.