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Relicense hwdb/parse_hwdb.py as MIT (#4129)
[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;
5d1ce257 104static bool arg_file_stdin = false;
941e990d 105static int arg_priorities = 0xFF;
baed47c3 106static const char *arg_verify_key = NULL;
feb12d3e 107#ifdef HAVE_GCRYPT
baed47c3 108static usec_t arg_interval = DEFAULT_FSS_INTERVAL_USEC;
b8547c10 109static bool arg_force = false;
feb12d3e 110#endif
cfbc22ab
LP		 111static usec_t arg_since, arg_until;
112static bool arg_since_set = false, arg_until_set = false;
73083640 113static char **arg_syslog_identifier = NULL;
b9e40524
HH		 114static char **arg_system_units = NULL;
115static char **arg_user_units = NULL;
3c1668da 116static const char *arg_field = NULL;
d4205751 117static bool arg_catalog = false;
d89d6c86 118static bool arg_reverse = false;
3f3a438f 119static int arg_journal_type = 0;
0f03c2a4 120static char *arg_root = NULL;
b6741478 121static const char *arg_machine = NULL;
8580d1f7
LP		 122static uint64_t arg_vacuum_size = 0;
123static uint64_t arg_vacuum_n_files = 0;
124static usec_t arg_vacuum_time = 0;
50f20cfd 125
7560fffc
LP		 126static enum {
127 ACTION_SHOW,
128 ACTION_NEW_ID128,
129 ACTION_PRINT_HEADER,
beec0085 130 ACTION_SETUP_KEYS,
a1a03e30
LP		 131 ACTION_VERIFY,
132 ACTION_DISK_USAGE,
d4205751 133 ACTION_LIST_CATALOG,
54b7254c 134 ACTION_DUMP_CATALOG,
f1188074
ZJS		 135 ACTION_UPDATE_CATALOG,
136 ACTION_LIST_BOOTS,
74055aa7 137 ACTION_FLUSH,
a020b3b3 138 ACTION_SYNC,
e3fdfb49 139 ACTION_ROTATE,
dbd2a83f 140 ACTION_VACUUM,
69e714f3
LP		 141 ACTION_LIST_FIELDS,
142 ACTION_LIST_FIELD_NAMES,
7560fffc
LP		 143} arg_action = ACTION_SHOW;
144
45bc27b6 145typedef struct BootId {
a331b5e6 146 sd_id128_t id;
f1188074
ZJS		 147 uint64_t first;
148 uint64_t last;
45bc27b6
LP		 149 LIST_FIELDS(struct BootId, boot_list);
150} BootId;
a331b5e6 151
795ab08f
MS		 152static int add_matches_for_device(sd_journal *j, const char *devpath) {
153 int r;
154 _cleanup_udev_unref_ struct udev *udev = NULL;
155 _cleanup_udev_device_unref_ struct udev_device *device = NULL;
156 struct udev_device *d = NULL;
157 struct stat st;
158
159 assert(j);
160 assert(devpath);
161
162 if (!path_startswith(devpath, "/dev/")) {
163 log_error("Devpath does not start with /dev/");
164 return -EINVAL;
165 }
166
167 udev = udev_new();
168 if (!udev)
169 return log_oom();
170
171 r = stat(devpath, &st);
172 if (r < 0)
173 log_error_errno(errno, "Couldn't stat file: %m");
174
175 d = device = udev_device_new_from_devnum(udev, S_ISBLK(st.st_mode) ? 'b' : 'c', st.st_rdev);
176 if (!device)
177 return log_error_errno(errno, "Failed to get udev device from devnum %u:%u: %m", major(st.st_rdev), minor(st.st_rdev));
178
179 while (d) {
180 _cleanup_free_ char *match = NULL;
181 const char *subsys, *sysname, *devnode;
182
183 subsys = udev_device_get_subsystem(d);
184 if (!subsys) {
185 d = udev_device_get_parent(d);
186 continue;
187 }
188
189 sysname = udev_device_get_sysname(d);
190 if (!sysname) {
191 d = udev_device_get_parent(d);
192 continue;
193 }
194
195 match = strjoin("_KERNEL_DEVICE=+", subsys, ":", sysname, NULL);
196 if (!match)
197 return log_oom();
198
199 r = sd_journal_add_match(j, match, 0);
200 if (r < 0)
201 return log_error_errno(r, "Failed to add match: %m");
202
203 devnode = udev_device_get_devnode(d);
204 if (devnode) {
205 _cleanup_free_ char *match1 = NULL;
206
207 r = stat(devnode, &st);
208 if (r < 0)
209 return log_error_errno(r, "Failed to stat() device node \"%s\": %m", devnode);
210
211 r = asprintf(&match1, "_KERNEL_DEVICE=%c%u:%u", S_ISBLK(st.st_mode) ? 'b' : 'c', major(st.st_rdev), minor(st.st_rdev));
212 if (r < 0)
213 return log_oom();
214
215 r = sd_journal_add_match(j, match1, 0);
216 if (r < 0)
217 return log_error_errno(r, "Failed to add match: %m");
218 }
219
220 d = udev_device_get_parent(d);
221 }
222
485fd9a7
MS		 223 r = add_match_this_boot(j, arg_machine);
224 if (r < 0)
225 return log_error_errno(r, "Failed to add match for the current boot: %m");
226
795ab08f
MS		 227 return 0;
228}
229
5ab99e07
LP		 230static char *format_timestamp_maybe_utc(char *buf, size_t l, usec_t t) {
231
232 if (arg_utc)
233 return format_timestamp_utc(buf, l, t);
234
235 return format_timestamp(buf, l, t);
236}
237
442e2def
LP		 238static int parse_boot_descriptor(const char *x, sd_id128_t *boot_id, int *offset) {
239 sd_id128_t id = SD_ID128_NULL;
240 int off = 0, r;
241
242 if (strlen(x) >= 32) {
243 char *t;
244
245 t = strndupa(x, 32);
246 r = sd_id128_from_string(t, &id);
247 if (r >= 0)
248 x += 32;
249
250 if (*x != '-' && *x != '+' && *x != 0)
251 return -EINVAL;
252
253 if (*x != 0) {
254 r = safe_atoi(x, &off);
255 if (r < 0)
256 return r;
257 }
258 } else {
259 r = safe_atoi(x, &off);
260 if (r < 0)
261 return r;
262 }
263
264 if (boot_id)
265 *boot_id = id;
266
267 if (offset)
268 *offset = off;
269
270 return 0;
271}
272
601185b4 273static void help(void) {
0d43c694 274
ea4b98e6 275 pager_open(arg_no_pager, arg_pager_end);
faf5077f 276
cd4b13e0 277 printf("%s [OPTIONS...] [MATCHES...]\n\n"
15119c16 278 "Query the journal.\n\n"
94b65516 279 "Options:\n"
eacbb4d3
ZJS		 280 " --system Show the system journal\n"
281 " --user Show the user journal for the current user\n"
b6741478 282 " -M --machine=CONTAINER Operate on local container\n"
66f52924
JS		 283 " -S --since=DATE Show entries not older than the specified date\n"
284 " -U --until=DATE Show entries not newer than the specified date\n"
40f0b71b
ZJS		 285 " -c --cursor=CURSOR Show entries starting at the specified cursor\n"
286 " --after-cursor=CURSOR Show entries after the specified cursor\n"
248fc619 287 " --show-cursor Print the cursor after all the entries\n"
40f0b71b 288 " -b --boot[=ID] Show current boot or the specified boot\n"
f1188074 289 " --list-boots Show terse information about recorded boots\n"
c736283b 290 " -k --dmesg Show kernel message log from the current boot\n"
40f0b71b
ZJS		 291 " -u --unit=UNIT Show logs from the specified unit\n"
292 " --user-unit=UNIT Show logs from the specified user unit\n"
293 " -t --identifier=STRING Show entries with the specified syslog identifier\n"
294 " -p --priority=RANGE Show entries with the specified priority\n"
295 " -e --pager-end Immediately jump to the end in the pager\n"
c736283b 296 " -f --follow Follow the journal\n"
248fc619
ZJS		 297 " -n --lines[=INTEGER] Number of journal entries to show\n"
298 " --no-tail Show all lines, even in follow mode\n"
299 " -r --reverse Show the newest entries first\n"
584c6e70
ZJS		 300 " -o --output=STRING Change journal output mode (short, short-precise,\n"
301 " short-iso, short-full, short-monotonic, short-unix,\n"
302 " verbose, export, json, json-pretty, json-sse, cat)\n"
9fd29044 303 " --utc Express time in Coordinated Universal Time (UTC)\n"
248fc619 304 " -x --catalog Add message explanations where available\n"
2b8f6883 305 " --no-full Ellipsize fields\n"
248fc619 306 " -a --all Show all fields, including long and unprintable\n"
20d936ba 307 " -q --quiet Do not show info messages and privilege warning\n"
248fc619 308 " --no-pager Do not pipe output into a pager\n"
991e274b 309 " --no-hostname Suppress output of hostname field\n"
248fc619
ZJS		 310 " -m --merge Show entries from all available journals\n"
311 " -D --directory=PATH Show journal files from directory\n"
312 " --file=PATH Show journal file\n"
0a175093 313 " --root=ROOT Operate on files below a root directory\n"
15119c16 314#ifdef HAVE_GCRYPT
248fc619
ZJS		 315 " --interval=TIME Time interval for changing the FSS sealing key\n"
316 " --verify-key=KEY Specify FSS verification key\n"
40f0b71b 317 " --force Override of the FSS key pair with --setup-keys\n"
15119c16
LP		 318#endif
319 "\nCommands:\n"
c736283b 320 " -h --help Show this help text\n"
248fc619 321 " --version Show package version\n"
69e714f3 322 " -N --fields List all field names currently used\n"
dbd2a83f 323 " -F --field=FIELD List all values that a specified field takes\n"
c736283b 324 " --disk-usage Show total disk usage of all journal files\n"
40f0b71b 325 " --vacuum-size=BYTES Reduce disk usage below specified size\n"
8580d1f7
LP		 326 " --vacuum-files=INT Leave only the specified number of journal files\n"
327 " --vacuum-time=TIME Remove journal files older than specified time\n"
94b65516
LP		 328 " --verify Verify journal file consistency\n"
329 " --sync Synchronize unwritten journal messages to disk\n"
dbd2a83f 330 " --flush Flush all journal data from /run into /var\n"
e3fdfb49 331 " --rotate Request immediate rotation of the journal files\n"
dbd2a83f 332 " --header Show journal header information\n"
40f0b71b 333 " --list-catalog Show all message IDs in the catalog\n"
248fc619
ZJS		 334 " --dump-catalog Show entries in the message catalog\n"
335 " --update-catalog Update the message catalog database\n"
94b65516 336 " --new-id128 Generate a new 128-bit ID\n"
feb12d3e 337#ifdef HAVE_GCRYPT
c736283b 338 " --setup-keys Generate a new FSS key pair\n"
feb12d3e
LP		 339#endif
340 , program_invocation_short_name);
0d43c694
LP		 341}
342
343static int parse_argv(int argc, char *argv[]) {
344
345 enum {
346 ARG_VERSION = 0x100,
e91af489 347 ARG_NO_PAGER,
2b8f6883 348 ARG_NO_FULL,
55ee336c 349 ARG_NO_TAIL,
dca6219e 350 ARG_NEW_ID128,
8453f062 351 ARG_THIS_BOOT,
f1188074 352 ARG_LIST_BOOTS,
3f3a438f
ZJS		 353 ARG_USER,
354 ARG_SYSTEM,
13cbf3a5 355 ARG_ROOT,
7560fffc 356 ARG_HEADER,
beec0085 357 ARG_SETUP_KEYS,
8d98da3f 358 ARG_FILE,
baed47c3 359 ARG_INTERVAL,
4da416aa 360 ARG_VERIFY,
a1a03e30 361 ARG_VERIFY_KEY,
cfbc22ab 362 ARG_DISK_USAGE,
248fc619
ZJS		 363 ARG_AFTER_CURSOR,
364 ARG_SHOW_CURSOR,
ffa7cd15 365 ARG_USER_UNIT,
d4205751 366 ARG_LIST_CATALOG,
54b7254c 367 ARG_DUMP_CATALOG,
3f3a438f 368 ARG_UPDATE_CATALOG,
b8547c10 369 ARG_FORCE,
9fd29044 370 ARG_UTC,
94b65516 371 ARG_SYNC,
74055aa7 372 ARG_FLUSH,
e3fdfb49 373 ARG_ROTATE,
dbd2a83f 374 ARG_VACUUM_SIZE,
8580d1f7 375 ARG_VACUUM_FILES,
dbd2a83f 376 ARG_VACUUM_TIME,
991e274b 377 ARG_NO_HOSTNAME,
0d43c694
LP		 378 };
379
380 static const struct option options[] = {
248fc619
ZJS		 381 { "help", no_argument, NULL, 'h' },
382 { "version" , no_argument, NULL, ARG_VERSION },
383 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
384 { "pager-end", no_argument, NULL, 'e' },
385 { "follow", no_argument, NULL, 'f' },
386 { "force", no_argument, NULL, ARG_FORCE },
387 { "output", required_argument, NULL, 'o' },
388 { "all", no_argument, NULL, 'a' },
389 { "full", no_argument, NULL, 'l' },
2b8f6883 390 { "no-full", no_argument, NULL, ARG_NO_FULL },
248fc619
ZJS		 391 { "lines", optional_argument, NULL, 'n' },
392 { "no-tail", no_argument, NULL, ARG_NO_TAIL },
393 { "new-id128", no_argument, NULL, ARG_NEW_ID128 },
394 { "quiet", no_argument, NULL, 'q' },
395 { "merge", no_argument, NULL, 'm' },
8453f062 396 { "this-boot", no_argument, NULL, ARG_THIS_BOOT }, /* deprecated */
248fc619 397 { "boot", optional_argument, NULL, 'b' },
f1188074 398 { "list-boots", no_argument, NULL, ARG_LIST_BOOTS },
248fc619
ZJS		 399 { "dmesg", no_argument, NULL, 'k' },
400 { "system", no_argument, NULL, ARG_SYSTEM },
401 { "user", no_argument, NULL, ARG_USER },
402 { "directory", required_argument, NULL, 'D' },
403 { "file", required_argument, NULL, ARG_FILE },
404 { "root", required_argument, NULL, ARG_ROOT },
405 { "header", no_argument, NULL, ARG_HEADER },
73083640 406 { "identifier", required_argument, NULL, 't' },
248fc619
ZJS		 407 { "priority", required_argument, NULL, 'p' },
408 { "setup-keys", no_argument, NULL, ARG_SETUP_KEYS },
409 { "interval", required_argument, NULL, ARG_INTERVAL },
410 { "verify", no_argument, NULL, ARG_VERIFY },
411 { "verify-key", required_argument, NULL, ARG_VERIFY_KEY },
412 { "disk-usage", no_argument, NULL, ARG_DISK_USAGE },
413 { "cursor", required_argument, NULL, 'c' },
414 { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR },
415 { "show-cursor", no_argument, NULL, ARG_SHOW_CURSOR },
66f52924
JS		 416 { "since", required_argument, NULL, 'S' },
417 { "until", required_argument, NULL, 'U' },
248fc619
ZJS		 418 { "unit", required_argument, NULL, 'u' },
419 { "user-unit", required_argument, NULL, ARG_USER_UNIT },
420 { "field", required_argument, NULL, 'F' },
69e714f3 421 { "fields", no_argument, NULL, 'N' },
248fc619
ZJS		 422 { "catalog", no_argument, NULL, 'x' },
423 { "list-catalog", no_argument, NULL, ARG_LIST_CATALOG },
424 { "dump-catalog", no_argument, NULL, ARG_DUMP_CATALOG },
425 { "update-catalog", no_argument, NULL, ARG_UPDATE_CATALOG },
426 { "reverse", no_argument, NULL, 'r' },
b6741478 427 { "machine", required_argument, NULL, 'M' },
9fd29044 428 { "utc", no_argument, NULL, ARG_UTC },
74055aa7 429 { "flush", no_argument, NULL, ARG_FLUSH },
94b65516 430 { "sync", no_argument, NULL, ARG_SYNC },
e3fdfb49 431 { "rotate", no_argument, NULL, ARG_ROTATE },
dbd2a83f 432 { "vacuum-size", required_argument, NULL, ARG_VACUUM_SIZE },
8580d1f7 433 { "vacuum-files", required_argument, NULL, ARG_VACUUM_FILES },
dbd2a83f 434 { "vacuum-time", required_argument, NULL, ARG_VACUUM_TIME },
991e274b 435 { "no-hostname", no_argument, NULL, ARG_NO_HOSTNAME },
eb9da376 436 {}
0d43c694
LP		 437 };
438
2100675e 439 int c, r;
0d43c694
LP		 440
441 assert(argc >= 0);
442 assert(argv);
443
69e714f3 444 while ((c = getopt_long(argc, argv, "hefo:aln::qmb::kD:p:c:S:U:t:u:NF:xrM:", options, NULL)) >= 0)
0d43c694
LP		 445
446 switch (c) {
447
448 case 'h':
601185b4
ZJS		 449 help();
450 return 0;
0d43c694
LP		 451
452 case ARG_VERSION:
3f6fd1ba 453 return version();
0d43c694
LP		 454
455 case ARG_NO_PAGER:
456 arg_no_pager = true;
457 break;
458
1b12a7b5
HH		 459 case 'e':
460 arg_pager_end = true;
fe59e38b 461
97e1cc8b 462 if (arg_lines == ARG_LINES_DEFAULT)
fe59e38b
LP		 463 arg_lines = 1000;
464
1b12a7b5
HH		 465 break;
466
0d43c694
LP		 467 case 'f':
468 arg_follow = true;
469 break;
470
471 case 'o':
1705594f 472 arg_output = output_mode_from_string(optarg);
df50185b 473 if (arg_output < 0) {
edfb521a 474 log_error("Unknown output format '%s'.", optarg);
0d43c694
LP		 475 return -EINVAL;
476 }
df50185b 477
edfb521a
ZJS		 478 if (arg_output == OUTPUT_EXPORT ||
479 arg_output == OUTPUT_JSON ||
480 arg_output == OUTPUT_JSON_PRETTY ||
481 arg_output == OUTPUT_JSON_SSE ||
482 arg_output == OUTPUT_CAT)
483 arg_quiet = true;
484
0d43c694
LP		 485 break;
486
98a6e132 487 case 'l':
e3657ecd
ZJS		 488 arg_full = true;
489 break;
490
2b8f6883
ZJS		 491 case ARG_NO_FULL:
492 arg_full = false;
493 break;
494
0d43c694 495 case 'a':
cd4b13e0 496 arg_all = true;
0d43c694
LP		 497 break;
498
2100675e 499 case 'n':
1705594f 500 if (optarg) {
48382487 501 if (streq(optarg, "all"))
97e1cc8b 502 arg_lines = ARG_LINES_ALL;
48382487
JJ		 503 else {
504 r = safe_atoi(optarg, &arg_lines);
505 if (r < 0 || arg_lines < 0) {
506 log_error("Failed to parse lines '%s'", optarg);
507 return -EINVAL;
508 }
1705594f 509 }
96088db0 510 } else {
48382487 511 arg_lines = 10;
96088db0
LP		 512
513 /* Hmm, no argument? Maybe the next
514 * word on the command line is
515 * supposed to be the argument? Let's
516 * see if there is one, and is
48382487
JJ		 517 * parsable. */
518 if (optind < argc) {
519 int n;
520 if (streq(argv[optind], "all")) {
97e1cc8b 521 arg_lines = ARG_LINES_ALL;
48382487
JJ		 522 optind++;
523 } else if (safe_atoi(argv[optind], &n) >= 0 && n >= 0) {
524 arg_lines = n;
525 optind++;
526 }
527 }
96088db0 528 }
1705594f 529
2100675e
LP		 530 break;
531
e91af489
LP		 532 case ARG_NO_TAIL:
533 arg_no_tail = true;
534 break;
535
39f7f5c1 536 case ARG_NEW_ID128:
7560fffc 537 arg_action = ACTION_NEW_ID128;
55ee336c
LP		 538 break;
539
43673799
LP		 540 case 'q':
541 arg_quiet = true;
490e567d 542 break;
43673799 543
9e8a535f
LP		 544 case 'm':
545 arg_merge = true;
2bd3c38a
LP		 546 break;
547
8453f062
ZJS		 548 case ARG_THIS_BOOT:
549 arg_boot = true;
550 break;
551
59cea26a 552 case 'b':
d121b396 553 arg_boot = true;
6cebe83c 554
442e2def 555 if (optarg) {
909dea0c 556 r = parse_boot_descriptor(optarg, &arg_boot_id, &arg_boot_offset);
442e2def
LP		 557 if (r < 0) {
558 log_error("Failed to parse boot descriptor '%s'", optarg);
559 return -EINVAL;
560 }
561 } else {
6cebe83c 562
442e2def
LP		 563 /* Hmm, no argument? Maybe the next
564 * word on the command line is
565 * supposed to be the argument? Let's
566 * see if there is one and is parsable
567 * as a boot descriptor... */
568
569 if (optind < argc &&
570 parse_boot_descriptor(argv[optind], &arg_boot_id, &arg_boot_offset) >= 0)
6cebe83c 571 optind++;
6cebe83c 572 }
d121b396 573
59cea26a
LP		 574 break;
575
f1188074
ZJS		 576 case ARG_LIST_BOOTS:
577 arg_action = ACTION_LIST_BOOTS;
578 break;
579
99271804 580 case 'k':
d121b396 581 arg_boot = arg_dmesg = true;
99271804
ZJS		 582 break;
583
3f3a438f
ZJS		 584 case ARG_SYSTEM:
585 arg_journal_type |= SD_JOURNAL_SYSTEM;
586 break;
587
588 case ARG_USER:
589 arg_journal_type |= SD_JOURNAL_CURRENT_USER;
590 break;
591
b6741478
LP		 592 case 'M':
593 arg_machine = optarg;
594 break;
595
a963990f
LP		 596 case 'D':
597 arg_directory = optarg;
598 break;
599
8d98da3f 600 case ARG_FILE:
5d1ce257
LP		 601 if (streq(optarg, "-"))
602 /* An undocumented feature: we can read journal files from STDIN. We don't document
603 * this though, since after all we only support this for mmap-able, seekable files, and
604 * not for example pipes which are probably the primary usecase for reading things from
605 * STDIN. To avoid confusion we hence don't document this feature. */
606 arg_file_stdin = true;
607 else {
608 r = glob_extend(&arg_file, optarg);
609 if (r < 0)
610 return log_error_errno(r, "Failed to add paths: %m");
611 }
8d98da3f
ZJS		 612 break;
613
13cbf3a5 614 case ARG_ROOT:
0f03c2a4
LP		 615 r = parse_path_argument_and_warn(optarg, true, &arg_root);
616 if (r < 0)
617 return r;
13cbf3a5
ZJS		 618 break;
619
8f14c832
LP		 620 case 'c':
621 arg_cursor = optarg;
622 break;
623
248fc619
ZJS		 624 case ARG_AFTER_CURSOR:
625 arg_after_cursor = optarg;
626 break;
627
628 case ARG_SHOW_CURSOR:
629 arg_show_cursor = true;
630 break;
631
dca6219e 632 case ARG_HEADER:
7560fffc
LP		 633 arg_action = ACTION_PRINT_HEADER;
634 break;
635
feb12d3e
LP		 636 case ARG_VERIFY:
637 arg_action = ACTION_VERIFY;
638 break;
639
a1a03e30
LP		 640 case ARG_DISK_USAGE:
641 arg_action = ACTION_DISK_USAGE;
642 break;
643
dbd2a83f
LP		 644 case ARG_VACUUM_SIZE:
645 r = parse_size(optarg, 1024, &arg_vacuum_size);
646 if (r < 0) {
647 log_error("Failed to parse vacuum size: %s", optarg);
648 return r;
649 }
650
651 arg_action = ACTION_VACUUM;
652 break;
653
8580d1f7
LP		 654 case ARG_VACUUM_FILES:
655 r = safe_atou64(optarg, &arg_vacuum_n_files);
656 if (r < 0) {
657 log_error("Failed to parse vacuum files: %s", optarg);
658 return r;
659 }
660
661 arg_action = ACTION_VACUUM;
662 break;
663
dbd2a83f
LP		 664 case ARG_VACUUM_TIME:
665 r = parse_sec(optarg, &arg_vacuum_time);
666 if (r < 0) {
667 log_error("Failed to parse vacuum time: %s", optarg);
668 return r;
669 }
670
671 arg_action = ACTION_VACUUM;
672 break;
673
feb12d3e 674#ifdef HAVE_GCRYPT
b8547c10
SL		 675 case ARG_FORCE:
676 arg_force = true;
677 break;
678
7560fffc
LP		 679 case ARG_SETUP_KEYS:
680 arg_action = ACTION_SETUP_KEYS;
dca6219e
LP		 681 break;
682
beec0085 683
baed47c3 684 case ARG_VERIFY_KEY:
4da416aa 685 arg_action = ACTION_VERIFY;
baed47c3 686 arg_verify_key = optarg;
9e8a535f 687 arg_merge = false;
4da416aa
LP		 688 break;
689
baed47c3 690 case ARG_INTERVAL:
7f602784 691 r = parse_sec(optarg, &arg_interval);
baed47c3
LP		 692 if (r < 0 || arg_interval <= 0) {
693 log_error("Failed to parse sealing key change interval: %s", optarg);
14d10188
LP		 694 return -EINVAL;
695 }
696 break;
feb12d3e
LP		 697#else
698 case ARG_SETUP_KEYS:
699 case ARG_VERIFY_KEY:
700 case ARG_INTERVAL:
b8547c10 701 case ARG_FORCE:
feb12d3e 702 log_error("Forward-secure sealing not available.");
15411c0c 703 return -EOPNOTSUPP;
feb12d3e 704#endif
14d10188 705
941e990d
LP		 706 case 'p': {
707 const char *dots;
708
709 dots = strstr(optarg, "..");
710 if (dots) {
711 char *a;
712 int from, to, i;
713
714 /* a range */
715 a = strndup(optarg, dots - optarg);
716 if (!a)
717 return log_oom();
718
719 from = log_level_from_string(a);
720 to = log_level_from_string(dots + 2);
721 free(a);
722
723 if (from < 0 || to < 0) {
724 log_error("Failed to parse log level range %s", optarg);
725 return -EINVAL;
726 }
727
728 arg_priorities = 0;
729
730 if (from < to) {
731 for (i = from; i <= to; i++)
732 arg_priorities |= 1 << i;
733 } else {
734 for (i = to; i <= from; i++)
735 arg_priorities |= 1 << i;
736 }
737
738 } else {
739 int p, i;
740
741 p = log_level_from_string(optarg);
742 if (p < 0) {
743 log_error("Unknown log level %s", optarg);
744 return -EINVAL;
745 }
746
747 arg_priorities = 0;
748
749 for (i = 0; i <= p; i++)
750 arg_priorities |= 1 << i;
751 }
752
753 break;
754 }
755
66f52924 756 case 'S':
cfbc22ab
LP		 757 r = parse_timestamp(optarg, &arg_since);
758 if (r < 0) {
759 log_error("Failed to parse timestamp: %s", optarg);
760 return -EINVAL;
761 }
762 arg_since_set = true;
763 break;
764
66f52924 765 case 'U':
cfbc22ab
LP		 766 r = parse_timestamp(optarg, &arg_until);
767 if (r < 0) {
768 log_error("Failed to parse timestamp: %s", optarg);
769 return -EINVAL;
770 }
771 arg_until_set = true;
772 break;
773
73083640
HH		 774 case 't':
775 r = strv_extend(&arg_syslog_identifier, optarg);
776 if (r < 0)
777 return log_oom();
778 break;
779
7199aa96 780 case 'u':
b9e40524
HH		 781 r = strv_extend(&arg_system_units, optarg);
782 if (r < 0)
783 return log_oom();
ffa7cd15
DW		 784 break;
785
7199aa96 786 case ARG_USER_UNIT:
b9e40524
HH		 787 r = strv_extend(&arg_user_units, optarg);
788 if (r < 0)
789 return log_oom();
c3f60ec5
LP		 790 break;
791
15119c16 792 case 'F':
69e714f3 793 arg_action = ACTION_LIST_FIELDS;
15119c16
LP		 794 arg_field = optarg;
795 break;
796
69e714f3
LP		 797 case 'N':
798 arg_action = ACTION_LIST_FIELD_NAMES;
799 break;
800
991e274b
LP		 801 case ARG_NO_HOSTNAME:
802 arg_no_hostname = true;
803 break;
804
d4205751
LP		 805 case 'x':
806 arg_catalog = true;
807 break;
808
809 case ARG_LIST_CATALOG:
810 arg_action = ACTION_LIST_CATALOG;
811 break;
812
54b7254c
ZJS		 813 case ARG_DUMP_CATALOG:
814 arg_action = ACTION_DUMP_CATALOG;
815 break;
816
d4205751
LP		 817 case ARG_UPDATE_CATALOG:
818 arg_action = ACTION_UPDATE_CATALOG;
819 break;
820
d89d6c86
LN		 821 case 'r':
822 arg_reverse = true;
823 break;
824
9fd29044
JS		 825 case ARG_UTC:
826 arg_utc = true;
827 break;
828
74055aa7
LP		 829 case ARG_FLUSH:
830 arg_action = ACTION_FLUSH;
831 break;
832
e3fdfb49
EV		 833 case ARG_ROTATE:
834 arg_action = ACTION_ROTATE;
835 break;
836
94b65516
LP		 837 case ARG_SYNC:
838 arg_action = ACTION_SYNC;
839 break;
840
eb9da376 841 case '?':
0d43c694 842 return -EINVAL;
eb9da376
LP		 843
844 default:
845 assert_not_reached("Unhandled option");
0d43c694 846 }
0d43c694 847
70af7b8a 848 if (arg_follow && !arg_no_tail && !arg_since && arg_lines == ARG_LINES_DEFAULT)
e91af489
LP		 849 arg_lines = 10;
850
0a175093
ZJS		 851 if (!!arg_directory + !!arg_file + !!arg_machine + !!arg_root > 1) {
852 log_error("Please specify at most one of -D/--directory=, --file=, -M/--machine=, --root.");
8d98da3f
ZJS		 853 return -EINVAL;
854 }
855
3ba09ee8 856 if (arg_since_set && arg_until_set && arg_since > arg_until) {
cfbc22ab
LP		 857 log_error("--since= must be before --until=.");
858 return -EINVAL;
859 }
860
248fc619
ZJS		 861 if (!!arg_cursor + !!arg_after_cursor + !!arg_since_set > 1) {
862 log_error("Please specify only one of --since=, --cursor=, and --after-cursor.");
cfbc22ab
LP		 863 return -EINVAL;
864 }
865
d89d6c86
LN		 866 if (arg_follow && arg_reverse) {
867 log_error("Please specify either --reverse= or --follow=, not both.");
868 return -EINVAL;
869 }
870
f98a41c2 871 if (!IN_SET(arg_action, ACTION_SHOW, ACTION_DUMP_CATALOG, ACTION_LIST_CATALOG) && optind < argc) {
0b6b7c20
ZJS		 872 log_error("Extraneous arguments starting with '%s'", argv[optind]);
873 return -EINVAL;
874 }
875
f3bd7561
ZJS		 876 if ((arg_boot || arg_action == ACTION_LIST_BOOTS) && arg_merge) {
877 log_error("Using --boot or --list-boots with --merge is not supported.");
596a2329
JJ		 878 return -EINVAL;
879 }
880
52051dd8
LP		 881 if (!strv_isempty(arg_system_units) && (arg_journal_type == SD_JOURNAL_CURRENT_USER)) {
882
883 /* Specifying --user and --unit= at the same time makes no sense (as the former excludes the user
884 * journal, but the latter excludes the system journal, thus resulting in empty output). Let's be nice
885 * to users, and automatically turn --unit= into --user-unit= if combined with --user. */
886 r = strv_extend_strv(&arg_user_units, arg_system_units, true);
887 if (r < 0)
888 return -ENOMEM;
889
890 arg_system_units = strv_free(arg_system_units);
891 }
892
0d43c694
LP		 893 return 1;
894}
895
39f7f5c1 896static int generate_new_id128(void) {
55ee336c
LP		 897 sd_id128_t id;
898 int r;
899 unsigned i;
900
901 r = sd_id128_randomize(&id);
23bbb0de
MS		 902 if (r < 0)
903 return log_error_errno(r, "Failed to generate ID: %m");
55ee336c
LP		 904
905 printf("As string:\n"
906 SD_ID128_FORMAT_STR "\n\n"
907 "As UUID:\n"
908 "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n\n"
909 "As macro:\n"
d489071f 910 "#define MESSAGE_XYZ SD_ID128_MAKE(",
55ee336c
LP		 911 SD_ID128_FORMAT_VAL(id),
912 SD_ID128_FORMAT_VAL(id));
55ee336c
LP		 913 for (i = 0; i < 16; i++)
914 printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
d489071f 915 fputs(")\n\n", stdout);
55ee336c 916
d489071f
ZJS		 917 printf("As Python constant:\n"
918 ">>> import uuid\n"
919 ">>> MESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')\n",
920 SD_ID128_FORMAT_VAL(id));
55ee336c
LP		 921
922 return 0;
923}
924
a963990f
LP		 925static int add_matches(sd_journal *j, char **args) {
926 char **i;
4e602943 927 bool have_term = false;
59cea26a 928
a963990f 929 assert(j);
59cea26a 930
a963990f 931 STRV_FOREACH(i, args) {
52aeb63c 932 int r;
59cea26a 933
4e602943
ZJS		 934 if (streq(*i, "+")) {
935 if (!have_term)
936 break;
cbdca852 937 r = sd_journal_add_disjunction(j);
4e602943
ZJS		 938 have_term = false;
939
940 } else if (path_is_absolute(*i)) {
795ab08f 941 _cleanup_free_ char *p, *t = NULL, *t2 = NULL, *interpreter = NULL;
e5124088 942 const char *path;
a963990f 943 struct stat st;
e5124088 944
a963990f 945 p = canonicalize_file_name(*i);
795ab08f 946 path = p ?: *i;
e5124088 947
26b9f165 948 if (lstat(path, &st) < 0)
4a62c710 949 return log_error_errno(errno, "Couldn't stat file: %m");
e5124088 950
68fee104
ZJS		 951 if (S_ISREG(st.st_mode) && (0111 & st.st_mode)) {
952 if (executable_is_script(path, &interpreter) > 0) {
953 _cleanup_free_ char *comm;
954
2b6bf07d 955 comm = strndup(basename(path), 15);
68fee104
ZJS		 956 if (!comm)
957 return log_oom();
958
959 t = strappend("_COMM=", comm);
795ab08f
MS		 960 if (!t)
961 return log_oom();
68fee104
ZJS		 962
963 /* Append _EXE only if the interpreter is not a link.
73e231ab 964 Otherwise, it might be outdated often. */
795ab08f 965 if (lstat(interpreter, &st) == 0 && !S_ISLNK(st.st_mode)) {
68fee104
ZJS		 966 t2 = strappend("_EXE=", interpreter);
967 if (!t2)
968 return log_oom();
969 }
795ab08f 970 } else {
68fee104 971 t = strappend("_EXE=", path);
795ab08f
MS		 972 if (!t)
973 return log_oom();
974 }
975
976 r = sd_journal_add_match(j, t, 0);
977
978 if (r >=0 && t2)
979 r = sd_journal_add_match(j, t2, 0);
980
981 } else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
982 r = add_matches_for_device(j, path);
983 if (r < 0)
984 return r;
985 } else {
fb93cf73 986 log_error("File is neither a device node, nor regular file, nor executable: %s", *i);
a963990f 987 return -EINVAL;
50940700 988 }
e5124088 989
4e602943 990 have_term = true;
4e602943 991 } else {
cbdca852 992 r = sd_journal_add_match(j, *i, 0);
4e602943
ZJS		 993 have_term = true;
994 }
e5124088 995
23bbb0de
MS		 996 if (r < 0)
997 return log_error_errno(r, "Failed to add match '%s': %m", *i);
de7b95cd
LP		 998 }
999
4e602943
ZJS		 1000 if (!strv_isempty(args) && !have_term) {
1001 log_error("\"+\" can only be used between terms");
1002 return -EINVAL;
1003 }
1004
a963990f
LP		 1005 return 0;
1006}
1007
9530e0d0
LP		 1008static void boot_id_free_all(BootId *l) {
1009
1010 while (l) {
1011 BootId *i = l;
1012 LIST_REMOVE(boot_list, l, i);
1013 free(i);
1014 }
1015}
1016
dc009662
LP		 1017static int discover_next_boot(sd_journal *j,
1018 sd_id128_t previous_boot_id,
1019 bool advance_older,
1020 BootId **ret) {
45bc27b6 1021
45bc27b6 1022 _cleanup_free_ BootId *next_boot = NULL;
dc009662
LP		 1023 char match[9+32+1] = "_BOOT_ID=";
1024 sd_id128_t boot_id;
1025 int r;
ea7061e4
JJ		 1026
1027 assert(j);
dc009662 1028 assert(ret);
596a2329
JJ		 1029
1030 /* We expect the journal to be on the last position of a boot
1031 * (in relation to the direction we are going), so that the next
1032 * invocation of sd_journal_next/previous will be from a different
1033 * boot. We then collect any information we desire and then jump
1034 * to the last location of the new boot by using a _BOOT_ID match
1035 * coming from the other journal direction. */
1036
1037 /* Make sure we aren't restricted by any _BOOT_ID matches, so that
1038 * we can actually advance to a *different* boot. */
1039 sd_journal_flush_matches(j);
1040
dc009662
LP		 1041 do {
1042 if (advance_older)
1043 r = sd_journal_previous(j);
1044 else
1045 r = sd_journal_next(j);
1046 if (r < 0)
1047 return r;
1048 else if (r == 0)
1049 return 0; /* End of journal, yay. */
1050
1051 r = sd_journal_get_monotonic_usec(j, NULL, &boot_id);
1052 if (r < 0)
1053 return r;
1054
1055 /* We iterate through this in a loop, until the boot ID differs from the previous one. Note that
1056 * normally, this will only require a single iteration, as we seeked to the last entry of the previous
1057 * boot entry already. However, it might happen that the per-journal-field entry arrays are less
1058 * complete than the main entry array, and hence might reference an entry that's not actually the last
1059 * one of the boot ID as last one. Let's hence use the per-field array is initial seek position to
1060 * speed things up, but let's not trust that it is complete, and hence, manually advance as
1061 * necessary. */
1062
1063 } while (sd_id128_equal(boot_id, previous_boot_id));
596a2329 1064
45bc27b6 1065 next_boot = new0(BootId, 1);
596a2329 1066 if (!next_boot)
b56d608e 1067 return -ENOMEM;
f1188074 1068
dc009662 1069 next_boot->id = boot_id;
f1188074 1070
d1bf9dc9
LP		 1071 r = sd_journal_get_realtime_usec(j, &next_boot->first);
1072 if (r < 0)
1073 return r;
ea7061e4 1074
596a2329
JJ		 1075 /* Now seek to the last occurrence of this boot ID. */
1076 sd_id128_to_string(next_boot->id, match + 9);
1077 r = sd_journal_add_match(j, match, sizeof(match) - 1);
1078 if (r < 0)
1079 return r;
f1188074 1080
596a2329
JJ		 1081 if (advance_older)
1082 r = sd_journal_seek_head(j);
1083 else
1084 r = sd_journal_seek_tail(j);
1085 if (r < 0)
1086 return r;
f1188074 1087
596a2329
JJ		 1088 if (advance_older)
1089 r = sd_journal_next(j);
1090 else
1091 r = sd_journal_previous(j);
1092 if (r < 0)
1093 return r;
1094 else if (r == 0)
1095 return -ENODATA; /* This shouldn't happen. We just came from this very boot ID. */
f1188074 1096
d1bf9dc9
LP		 1097 r = sd_journal_get_realtime_usec(j, &next_boot->last);
1098 if (r < 0)
1099 return r;
596a2329 1100
dc009662 1101 *ret = next_boot;
596a2329 1102 next_boot = NULL;
9530e0d0 1103
596a2329
JJ		 1104 return 0;
1105}
1106
45bc27b6
LP		 1107static int get_boots(
1108 sd_journal *j,
1109 BootId **boots,
07ff6b08
ZJS		 1110 sd_id128_t *boot_id,
1111 int offset) {
45bc27b6 1112
596a2329
JJ		 1113 bool skip_once;
1114 int r, count = 0;
45bc27b6 1115 BootId *head = NULL, *tail = NULL;
07ff6b08 1116 const bool advance_older = boot_id && offset <= 0;
dc009662 1117 sd_id128_t previous_boot_id;
596a2329
JJ		 1118
1119 assert(j);
f1188074 1120
596a2329
JJ		 1121 /* Adjust for the asymmetry that offset 0 is
1122 * the last (and current) boot, while 1 is considered the
1123 * (chronological) first boot in the journal. */
592855c3 1124 skip_once = boot_id && sd_id128_is_null(*boot_id) && offset <= 0;
596a2329
JJ		 1125
1126 /* Advance to the earliest/latest occurrence of our reference
1127 * boot ID (taking our lookup direction into account), so that
1128 * discover_next_boot() can do its job.
1129 * If no reference is given, the journal head/tail will do,
1130 * they're "virtual" boots after all. */
07ff6b08 1131 if (boot_id && !sd_id128_is_null(*boot_id)) {
596a2329
JJ		 1132 char match[9+32+1] = "_BOOT_ID=";
1133
1134 sd_journal_flush_matches(j);
1135
07ff6b08 1136 sd_id128_to_string(*boot_id, match + 9);
596a2329 1137 r = sd_journal_add_match(j, match, sizeof(match) - 1);
f1188074
ZJS		 1138 if (r < 0)
1139 return r;
1140
596a2329 1141 if (advance_older)
c4fbc6b6 1142 r = sd_journal_seek_head(j); /* seek to oldest */
596a2329 1143 else
c4fbc6b6 1144 r = sd_journal_seek_tail(j); /* seek to newest */
f1188074
ZJS		 1145 if (r < 0)
1146 return r;
1147
596a2329 1148 if (advance_older)
c4fbc6b6 1149 r = sd_journal_next(j); /* read the oldest entry */
596a2329 1150 else
c4fbc6b6 1151 r = sd_journal_previous(j); /* read the most recently added entry */
f1188074
ZJS		 1152 if (r < 0)
1153 return r;
1154 else if (r == 0)
596a2329 1155 goto finish;
07ff6b08 1156 else if (offset == 0) {
596a2329
JJ		 1157 count = 1;
1158 goto finish;
1159 }
c4fbc6b6
LP		 1160
1161 /* At this point the read pointer is positioned at the oldest/newest occurence of the reference boot
1162 * ID. After flushing the matches, one more invocation of _previous()/_next() will hence place us at
1163 * the following entry, which must then have an older/newer boot ID */
596a2329 1164 } else {
c4fbc6b6 1165
596a2329 1166 if (advance_older)
c4fbc6b6 1167 r = sd_journal_seek_tail(j); /* seek to newest */
596a2329 1168 else
c4fbc6b6 1169 r = sd_journal_seek_head(j); /* seek to oldest */
f1188074
ZJS		 1170 if (r < 0)
1171 return r;
1172
c4fbc6b6
LP		 1173 /* No sd_journal_next()/_previous() here.
1174 *
1175 * At this point the read pointer is positioned after the newest/before the oldest entry in the whole
1176 * journal. The next invocation of _previous()/_next() will hence position us at the newest/oldest
1177 * entry we have. */
596a2329 1178 }
f1188074 1179
dc009662 1180 previous_boot_id = SD_ID128_NULL;
45bc27b6
LP		 1181 for (;;) {
1182 _cleanup_free_ BootId *current = NULL;
f1188074 1183
dc009662 1184 r = discover_next_boot(j, previous_boot_id, advance_older, &current);
596a2329 1185 if (r < 0) {
9530e0d0 1186 boot_id_free_all(head);
596a2329 1187 return r;
ea7061e4 1188 }
f1188074 1189
596a2329
JJ		 1190 if (!current)
1191 break;
1192
dc009662
LP		 1193 previous_boot_id = current->id;
1194
07ff6b08 1195 if (boot_id) {
596a2329 1196 if (!skip_once)
07ff6b08 1197 offset += advance_older ? 1 : -1;
596a2329
JJ		 1198 skip_once = false;
1199
07ff6b08 1200 if (offset == 0) {
596a2329 1201 count = 1;
07ff6b08 1202 *boot_id = current->id;
596a2329
JJ		 1203 break;
1204 }
1205 } else {
1206 LIST_INSERT_AFTER(boot_list, head, tail, current);
1207 tail = current;
1208 current = NULL;
1209 count++;
1210 }
f1188074
ZJS		 1211 }
1212
596a2329
JJ		 1213finish:
1214 if (boots)
1215 *boots = head;
1216
1217 sd_journal_flush_matches(j);
1218
1219 return count;
ea7061e4
JJ		 1220}
1221
1222static int list_boots(sd_journal *j) {
596a2329 1223 int w, i, count;
9530e0d0 1224 BootId *id, *all_ids;
ea7061e4
JJ		 1225
1226 assert(j);
1227
596a2329 1228 count = get_boots(j, &all_ids, NULL, 0);
b56d608e
LP		 1229 if (count < 0)
1230 return log_error_errno(count, "Failed to determine boots: %m");
1231 if (count == 0)
596a2329 1232 return count;
ea7061e4 1233
ea4b98e6 1234 pager_open(arg_no_pager, arg_pager_end);
f1188074
ZJS		 1235
1236 /* numbers are one less, but we need an extra char for the sign */
1237 w = DECIMAL_STR_WIDTH(count - 1) + 1;
1238
596a2329 1239 i = 0;
9530e0d0 1240 LIST_FOREACH(boot_list, id, all_ids) {
f1188074
ZJS		 1241 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX];
1242
1243 printf("% *i " SD_ID128_FORMAT_STR " %s—%s\n",
1244 w, i - count + 1,
1245 SD_ID128_FORMAT_VAL(id->id),
5ab99e07
LP		 1246 format_timestamp_maybe_utc(a, sizeof(a), id->first),
1247 format_timestamp_maybe_utc(b, sizeof(b), id->last));
596a2329 1248 i++;
d121b396 1249 }
a963990f 1250
9530e0d0
LP		 1251 boot_id_free_all(all_ids);
1252
a331b5e6
JJ		 1253 return 0;
1254}
1255
1256static int add_boot(sd_journal *j) {
1257 char match[9+32+1] = "_BOOT_ID=";
07ff6b08 1258 sd_id128_t boot_id;
442e2def 1259 int r;
a331b5e6
JJ		 1260
1261 assert(j);
1262
d121b396 1263 if (!arg_boot)
a331b5e6
JJ		 1264 return 0;
1265
592855c3
ZJS		 1266 /* Take a shortcut and use the current boot_id, which we can do very quickly.
1267 * We can do this only when we logs are coming from the current machine,
1268 * so take the slow path if log location is specified. */
3bbaff3e 1269 if (arg_boot_offset == 0 && sd_id128_is_null(arg_boot_id) &&
0a175093 1270 !arg_directory && !arg_file && !arg_root)
592855c3 1271
b6741478 1272 return add_match_this_boot(j, arg_machine);
a331b5e6 1273
07ff6b08
ZJS		 1274 boot_id = arg_boot_id;
1275 r = get_boots(j, NULL, &boot_id, arg_boot_offset);
596a2329
JJ		 1276 assert(r <= 1);
1277 if (r <= 0) {
1278 const char *reason = (r == 0) ? "No such boot ID in journal" : strerror(-r);
1279
1280 if (sd_id128_is_null(arg_boot_id))
c34e9399
JS		 1281 log_error("Data from the specified boot (%+i) is not available: %s",
1282 arg_boot_offset, reason);
d121b396 1283 else
c34e9399
JS		 1284 log_error("Data from the specified boot ("SD_ID128_FORMAT_STR") is not available: %s",
1285 SD_ID128_FORMAT_VAL(arg_boot_id), reason);
596a2329
JJ		 1286
1287 return r == 0 ? -ENODATA : r;
a331b5e6
JJ		 1288 }
1289
07ff6b08 1290 sd_id128_to_string(boot_id, match + 9);
d121b396
ZJS		 1291
1292 r = sd_journal_add_match(j, match, sizeof(match) - 1);
23bbb0de
MS		 1293 if (r < 0)
1294 return log_error_errno(r, "Failed to add match: %m");
a331b5e6
JJ		 1295
1296 r = sd_journal_add_conjunction(j);
1297 if (r < 0)
b56d608e 1298 return log_error_errno(r, "Failed to add conjunction: %m");
a331b5e6
JJ		 1299
1300 return 0;
a963990f
LP		 1301}
1302
99271804
ZJS		 1303static int add_dmesg(sd_journal *j) {
1304 int r;
1305 assert(j);
1306
1307 if (!arg_dmesg)
1308 return 0;
1309
1310 r = sd_journal_add_match(j, "_TRANSPORT=kernel", strlen("_TRANSPORT=kernel"));
23bbb0de
MS		 1311 if (r < 0)
1312 return log_error_errno(r, "Failed to add match: %m");
99271804
ZJS		 1313
1314 r = sd_journal_add_conjunction(j);
1315 if (r < 0)
b56d608e 1316 return log_error_errno(r, "Failed to add conjunction: %m");
99271804
ZJS		 1317
1318 return 0;
1319}
1320
b56d608e
LP		 1321static int get_possible_units(
1322 sd_journal *j,
1323 const char *fields,
1324 char **patterns,
1325 Set **units) {
1326
ea18a4b5
ZJS		 1327 _cleanup_set_free_free_ Set *found;
1328 const char *field;
c3f60ec5 1329 int r;
ea18a4b5 1330
d5099efc 1331 found = set_new(&string_hash_ops);
ea18a4b5 1332 if (!found)
b56d608e 1333 return -ENOMEM;
ea18a4b5
ZJS		 1334
1335 NULSTR_FOREACH(field, fields) {
1336 const void *data;
1337 size_t size;
1338
1339 r = sd_journal_query_unique(j, field);
1340 if (r < 0)
1341 return r;
1342
1343 SD_JOURNAL_FOREACH_UNIQUE(j, data, size) {
1344 char **pattern, *eq;
1345 size_t prefix;
1346 _cleanup_free_ char *u = NULL;
1347
1348 eq = memchr(data, '=', size);
1349 if (eq)
1350 prefix = eq - (char*) data + 1;
1351 else
1352 prefix = 0;
1353
1354 u = strndup((char*) data + prefix, size - prefix);
1355 if (!u)
b56d608e 1356 return -ENOMEM;
ea18a4b5
ZJS		 1357
1358 STRV_FOREACH(pattern, patterns)
1359 if (fnmatch(*pattern, u, FNM_NOESCAPE) == 0) {
1360 log_debug("Matched %s with pattern %s=%s", u, field, *pattern);
1361
1362 r = set_consume(found, u);
1363 u = NULL;
1364 if (r < 0 && r != -EEXIST)
1365 return r;
1366
1367 break;
1368 }
1369 }
1370 }
1371
1372 *units = found;
1373 found = NULL;
1374 return 0;
1375}
1376
1377/* This list is supposed to return the superset of unit names
1378 * possibly matched by rules added with add_matches_for_unit... */
1379#define SYSTEM_UNITS \
1380 "_SYSTEMD_UNIT\0" \
1381 "COREDUMP_UNIT\0" \
1382 "UNIT\0" \
1383 "OBJECT_SYSTEMD_UNIT\0" \
1384 "_SYSTEMD_SLICE\0"
1385
1386/* ... and add_matches_for_user_unit */
1387#define USER_UNITS \
1388 "_SYSTEMD_USER_UNIT\0" \
1389 "USER_UNIT\0" \
1390 "COREDUMP_USER_UNIT\0" \
1391 "OBJECT_SYSTEMD_USER_UNIT\0"
1392
1393static int add_units(sd_journal *j) {
1394 _cleanup_strv_free_ char **patterns = NULL;
1395 int r, count = 0;
b9e40524 1396 char **i;
c3f60ec5
LP		 1397
1398 assert(j);
1399
b9e40524 1400 STRV_FOREACH(i, arg_system_units) {
ea18a4b5
ZJS		 1401 _cleanup_free_ char *u = NULL;
1402
7410616c
LP		 1403 r = unit_name_mangle(*i, UNIT_NAME_GLOB, &u);
1404 if (r < 0)
1405 return r;
ea18a4b5
ZJS		 1406
1407 if (string_is_glob(u)) {
1408 r = strv_push(&patterns, u);
1409 if (r < 0)
1410 return r;
1411 u = NULL;
1412 } else {
1413 r = add_matches_for_unit(j, u);
1414 if (r < 0)
1415 return r;
1416 r = sd_journal_add_disjunction(j);
1417 if (r < 0)
1418 return r;
313cefa1 1419 count++;
ea18a4b5
ZJS		 1420 }
1421 }
1422
1423 if (!strv_isempty(patterns)) {
1424 _cleanup_set_free_free_ Set *units = NULL;
1425 Iterator it;
1426 char *u;
1427
1428 r = get_possible_units(j, SYSTEM_UNITS, patterns, &units);
b9e40524
HH		 1429 if (r < 0)
1430 return r;
ea18a4b5
ZJS		 1431
1432 SET_FOREACH(u, units, it) {
1433 r = add_matches_for_unit(j, u);
1434 if (r < 0)
1435 return r;
1436 r = sd_journal_add_disjunction(j);
1437 if (r < 0)
1438 return r;
313cefa1 1439 count++;
ea18a4b5 1440 }
b9e40524 1441 }
c3f60ec5 1442
97b11eed 1443 patterns = strv_free(patterns);
ea18a4b5 1444
b9e40524 1445 STRV_FOREACH(i, arg_user_units) {
ea18a4b5
ZJS		 1446 _cleanup_free_ char *u = NULL;
1447
7410616c
LP		 1448 r = unit_name_mangle(*i, UNIT_NAME_GLOB, &u);
1449 if (r < 0)
1450 return r;
c3f60ec5 1451
ea18a4b5
ZJS		 1452 if (string_is_glob(u)) {
1453 r = strv_push(&patterns, u);
1454 if (r < 0)
1455 return r;
1456 u = NULL;
1457 } else {
1458 r = add_matches_for_user_unit(j, u, getuid());
1459 if (r < 0)
1460 return r;
1461 r = sd_journal_add_disjunction(j);
1462 if (r < 0)
1463 return r;
313cefa1 1464 count++;
ea18a4b5
ZJS		 1465 }
1466 }
1467
1468 if (!strv_isempty(patterns)) {
1469 _cleanup_set_free_free_ Set *units = NULL;
1470 Iterator it;
1471 char *u;
b9e40524 1472
ea18a4b5 1473 r = get_possible_units(j, USER_UNITS, patterns, &units);
b9e40524
HH		 1474 if (r < 0)
1475 return r;
1476
ea18a4b5
ZJS		 1477 SET_FOREACH(u, units, it) {
1478 r = add_matches_for_user_unit(j, u, getuid());
1479 if (r < 0)
1480 return r;
1481 r = sd_journal_add_disjunction(j);
1482 if (r < 0)
1483 return r;
313cefa1 1484 count++;
ea18a4b5 1485 }
b9e40524 1486 }
c3f60ec5 1487
ea18a4b5
ZJS		 1488 /* Complain if the user request matches but nothing whatsoever was
1489 * found, since otherwise everything would be matched. */
1490 if (!(strv_isempty(arg_system_units) && strv_isempty(arg_user_units)) && count == 0)
1491 return -ENODATA;
1492
cd34b3c6
HH		 1493 r = sd_journal_add_conjunction(j);
1494 if (r < 0)
1495 return r;
1496
c3f60ec5
LP		 1497 return 0;
1498}
1499
941e990d
LP		 1500static int add_priorities(sd_journal *j) {
1501 char match[] = "PRIORITY=0";
1502 int i, r;
941e990d
LP		 1503 assert(j);
1504
1505 if (arg_priorities == 0xFF)
1506 return 0;
1507
1508 for (i = LOG_EMERG; i <= LOG_DEBUG; i++)
1509 if (arg_priorities & (1 << i)) {
1510 match[sizeof(match)-2] = '0' + i;
1511
941e990d 1512 r = sd_journal_add_match(j, match, strlen(match));
23bbb0de
MS		 1513 if (r < 0)
1514 return log_error_errno(r, "Failed to add match: %m");
941e990d
LP		 1515 }
1516
cd34b3c6
HH		 1517 r = sd_journal_add_conjunction(j);
1518 if (r < 0)
b56d608e 1519 return log_error_errno(r, "Failed to add conjunction: %m");
cd34b3c6 1520
941e990d
LP		 1521 return 0;
1522}
1523
73083640
HH		 1524
1525static int add_syslog_identifier(sd_journal *j) {
1526 int r;
1527 char **i;
1528
1529 assert(j);
1530
1531 STRV_FOREACH(i, arg_syslog_identifier) {
1532 char *u;
1533
63c372cb 1534 u = strjoina("SYSLOG_IDENTIFIER=", *i);
73083640
HH		 1535 r = sd_journal_add_match(j, u, 0);
1536 if (r < 0)
1537 return r;
1538 r = sd_journal_add_disjunction(j);
1539 if (r < 0)
1540 return r;
1541 }
1542
1543 r = sd_journal_add_conjunction(j);
1544 if (r < 0)
1545 return r;
1546
1547 return 0;
1548}
1549
7560fffc
LP		 1550static int setup_keys(void) {
1551#ifdef HAVE_GCRYPT
1552 size_t mpk_size, seed_size, state_size, i;
1553 uint8_t *mpk, *seed, *state;
11689d2a 1554 int fd = -1, r;
7560fffc
LP		 1555 sd_id128_t machine, boot;
1556 char *p = NULL, *k = NULL;
baed47c3 1557 struct FSSHeader h;
14d10188 1558 uint64_t n;
b98e3866
SL		 1559 struct stat st;
1560
1561 r = stat("/var/log/journal", &st);
4a62c710
MS		 1562 if (r < 0 && errno != ENOENT && errno != ENOTDIR)
1563 return log_error_errno(errno, "stat(\"%s\") failed: %m", "/var/log/journal");
b98e3866
SL		 1564
1565 if (r < 0 || !S_ISDIR(st.st_mode)) {
1566 log_error("%s is not a directory, must be using persistent logging for FSS.",
1567 "/var/log/journal");
1568 return r < 0 ? -errno : -ENOTDIR;
1569 }
7560fffc
LP		 1570
1571 r = sd_id128_get_machine(&machine);
23bbb0de
MS		 1572 if (r < 0)
1573 return log_error_errno(r, "Failed to get machine ID: %m");
7560fffc
LP		 1574
1575 r = sd_id128_get_boot(&boot);
23bbb0de
MS		 1576 if (r < 0)
1577 return log_error_errno(r, "Failed to get boot ID: %m");
7560fffc 1578
baed47c3 1579 if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss",
7560fffc
LP		 1580 SD_ID128_FORMAT_VAL(machine)) < 0)
1581 return log_oom();
1582
faf9da01
ZJS		 1583 if (arg_force) {
1584 r = unlink(p);
1585 if (r < 0 && errno != ENOENT) {
1586 r = log_error_errno(errno, "unlink(\"%s\") failed: %m", p);
b8547c10
SL		 1587 goto finish;
1588 }
faf9da01
ZJS		 1589 } else if (access(p, F_OK) >= 0) {
1590 log_error("Sealing key file %s exists already. Use --force to recreate.", p);
1591 r = -EEXIST;
1592 goto finish;
7560fffc
LP		 1593 }
1594
baed47c3 1595 if (asprintf(&k, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss.tmp.XXXXXX",
7560fffc
LP		 1596 SD_ID128_FORMAT_VAL(machine)) < 0) {
1597 r = log_oom();
1598 goto finish;
1599 }
1600
1601 mpk_size = FSPRG_mskinbytes(FSPRG_RECOMMENDED_SECPAR);
1602 mpk = alloca(mpk_size);
1603
1604 seed_size = FSPRG_RECOMMENDED_SEEDLEN;
1605 seed = alloca(seed_size);
1606
1607 state_size = FSPRG_stateinbytes(FSPRG_RECOMMENDED_SECPAR);
1608 state = alloca(state_size);
1609
1610 fd = open("/dev/random", O_RDONLY|O_CLOEXEC|O_NOCTTY);
1611 if (fd < 0) {
76ef789d 1612 r = log_error_errno(errno, "Failed to open /dev/random: %m");
7560fffc
LP		 1613 goto finish;
1614 }
1615
1616 log_info("Generating seed...");
a6dcc7e5
ZJS		 1617 r = loop_read_exact(fd, seed, seed_size, true);
1618 if (r < 0) {
1619 log_error_errno(r, "Failed to read random seed: %m");
7560fffc
LP		 1620 goto finish;
1621 }
1622
1623 log_info("Generating key pair...");
1624 FSPRG_GenMK(NULL, mpk, seed, seed_size, FSPRG_RECOMMENDED_SECPAR);
1625
baed47c3 1626 log_info("Generating sealing key...");
7560fffc
LP		 1627 FSPRG_GenState0(state, mpk, seed, seed_size);
1628
baed47c3
LP		 1629 assert(arg_interval > 0);
1630
7560fffc 1631 n = now(CLOCK_REALTIME);
baed47c3 1632 n /= arg_interval;
7560fffc 1633
03e334a1 1634 safe_close(fd);
2d5bdf5b 1635 fd = mkostemp_safe(k, O_WRONLY|O_CLOEXEC);
7560fffc 1636 if (fd < 0) {
709f6e46 1637 r = log_error_errno(fd, "Failed to open %s: %m", k);
7560fffc
LP		 1638 goto finish;
1639 }
1640
f982e6f7
LP		 1641 /* Enable secure remove, exclusion from dump, synchronous
1642 * writing and in-place updating */
1ed8f8c1 1643 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 1644 if (r < 0)
709f6e46 1645 log_warning_errno(r, "Failed to set file attributes: %m");
f982e6f7 1646
7560fffc
LP		 1647 zero(h);
1648 memcpy(h.signature, "KSHHRHLP", 8);
1649 h.machine_id = machine;
1650 h.boot_id = boot;
1651 h.header_size = htole64(sizeof(h));
baed47c3
LP		 1652 h.start_usec = htole64(n * arg_interval);
1653 h.interval_usec = htole64(arg_interval);
1654 h.fsprg_secpar = htole16(FSPRG_RECOMMENDED_SECPAR);
1655 h.fsprg_state_size = htole64(state_size);
7560fffc 1656
553acb7b
ZJS		 1657 r = loop_write(fd, &h, sizeof(h), false);
1658 if (r < 0) {
1659 log_error_errno(r, "Failed to write header: %m");
7560fffc
LP		 1660 goto finish;
1661 }
1662
553acb7b
ZJS		 1663 r = loop_write(fd, state, state_size, false);
1664 if (r < 0) {
1665 log_error_errno(r, "Failed to write state: %m");
7560fffc
LP		 1666 goto finish;
1667 }
1668
1669 if (link(k, p) < 0) {
76ef789d 1670 r = log_error_errno(errno, "Failed to link file: %m");
7560fffc
LP		 1671 goto finish;
1672 }
1673
8481248b 1674 if (on_tty()) {
7560fffc
LP		 1675 fprintf(stderr,
1676 "\n"
54f8c958 1677 "The new key pair has been generated. The %ssecret sealing key%s has been written to\n"
c05276f2
LP		 1678 "the following local file. This key file is automatically updated when the\n"
1679 "sealing key is advanced. It should not be used on multiple hosts.\n"
7560fffc
LP		 1680 "\n"
1681 "\t%s\n"
1682 "\n"
54f8c958 1683 "Please write down the following %ssecret verification key%s. It should be stored\n"
baed47c3 1684 "at a safe location and should not be saved locally on disk.\n"
54f8c958
LP		 1685 "\n\t%s",
1686 ansi_highlight(), ansi_normal(),
1687 ansi_highlight(), ansi_normal(),
1688 ansi_highlight_red(),
1689 p);
7560fffc
LP		 1690 fflush(stderr);
1691 }
1692 for (i = 0; i < seed_size; i++) {
1693 if (i > 0 && i % 3 == 0)
1694 putchar('-');
1695 printf("%02x", ((uint8_t*) seed)[i]);
1696 }
1697
baed47c3
LP		 1698 printf("/%llx-%llx\n", (unsigned long long) n, (unsigned long long) arg_interval);
1699
8481248b 1700 if (on_tty()) {
f6a971bc 1701 char tsb[FORMAT_TIMESPAN_MAX], *hn;
7560fffc 1702
baed47c3 1703 fprintf(stderr,
54f8c958 1704 "%s\n"
baed47c3 1705 "The sealing key is automatically changed every %s.\n",
54f8c958 1706 ansi_normal(),
2fa4092c 1707 format_timespan(tsb, sizeof(tsb), arg_interval, 0));
f6a971bc
LP		 1708
1709 hn = gethostname_malloc();
1710
1711 if (hn) {
ae691c1d 1712 hostname_cleanup(hn);
adac1c93 1713 fprintf(stderr, "\nThe keys have been generated for host %s/" SD_ID128_FORMAT_STR ".\n", hn, SD_ID128_FORMAT_VAL(machine));
f6a971bc 1714 } else
adac1c93 1715 fprintf(stderr, "\nThe keys have been generated for host " SD_ID128_FORMAT_STR ".\n", SD_ID128_FORMAT_VAL(machine));
f6a971bc
LP		 1716
1717#ifdef HAVE_QRENCODE
cf5a3432 1718 /* If this is not an UTF-8 system don't print any QR codes */
09017585 1719 if (is_locale_utf8()) {
cf5a3432
LP		 1720 fputs("\nTo transfer the verification key to your phone please scan the QR code below:\n\n", stderr);
1721 print_qr_code(stderr, seed, seed_size, n, arg_interval, hn, machine);
1722 }
f6a971bc
LP		 1723#endif
1724 free(hn);
baed47c3 1725 }
7560fffc
LP		 1726
1727 r = 0;
1728
1729finish:
03e334a1 1730 safe_close(fd);
7560fffc
LP		 1731
1732 if (k) {
1733 unlink(k);
1734 free(k);
1735 }
1736
1737 free(p);
1738
1739 return r;
1740#else
feb12d3e 1741 log_error("Forward-secure sealing not available.");
15411c0c 1742 return -EOPNOTSUPP;
7560fffc
LP		 1743#endif
1744}
1745
beec0085
LP		 1746static int verify(sd_journal *j) {
1747 int r = 0;
1748 Iterator i;
1749 JournalFile *f;
1750
1751 assert(j);
1752
cedb42bb
LP		 1753 log_show_color(true);
1754
c1f906bd 1755 ORDERED_HASHMAP_FOREACH(f, j->files, i) {
beec0085 1756 int k;
a7f7d1bd 1757 usec_t first = 0, validated = 0, last = 0;
beec0085 1758
56e81f7c 1759#ifdef HAVE_GCRYPT
feb12d3e 1760 if (!arg_verify_key && JOURNAL_HEADER_SEALED(f->header))
cedb42bb 1761 log_notice("Journal file %s has sealing enabled but verification key has not been passed using --verify-key=.", f->path);
56e81f7c 1762#endif
4da416aa 1763
2a7b539a 1764 k = journal_file_verify(f, arg_verify_key, &first, &validated, &last, true);
56e81f7c 1765 if (k == -EINVAL) {
baed47c3 1766 /* If the key was invalid give up right-away. */
56e81f7c
LP		 1767 return k;
1768 } else if (k < 0) {
e53fc357 1769 log_warning_errno(k, "FAIL: %s (%m)", f->path);
56e81f7c 1770 r = k;
6c7be122
LP		 1771 } else {
1772 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX], c[FORMAT_TIMESPAN_MAX];
beec0085 1773 log_info("PASS: %s", f->path);
6c7be122 1774
c0ca7aee 1775 if (arg_verify_key && JOURNAL_HEADER_SEALED(f->header)) {
2a7b539a 1776 if (validated > 0) {
c0ca7aee 1777 log_info("=> Validated from %s to %s, final %s entries not sealed.",
5ab99e07
LP		 1778 format_timestamp_maybe_utc(a, sizeof(a), first),
1779 format_timestamp_maybe_utc(b, sizeof(b), validated),
2fa4092c 1780 format_timespan(c, sizeof(c), last > validated ? last - validated : 0, 0));
2a7b539a 1781 } else if (last > 0)
c0ca7aee 1782 log_info("=> No sealing yet, %s of entries not sealed.",
2fa4092c 1783 format_timespan(c, sizeof(c), last - first, 0));
c0ca7aee
LP		 1784 else
1785 log_info("=> No sealing yet, no entries in file.");
1786 }
6c7be122 1787 }
beec0085
LP		 1788 }
1789
1790 return r;
1791}
1792
6fe391c5 1793static int access_check_var_log_journal(sd_journal *j) {
e346512c 1794#ifdef HAVE_ACL
6fe391c5 1795 _cleanup_strv_free_ char **g = NULL;
e346512c
LP		 1796 const char* dir;
1797#endif
6fe391c5
ZJS		 1798 int r;
1799
1800 assert(j);
1801
e346512c
LP		 1802 if (arg_quiet)
1803 return 0;
05c18530 1804
e346512c
LP		 1805 /* If we are root, we should have access, don't warn. */
1806 if (getuid() == 0)
1807 return 0;
05c18530 1808
e346512c
LP		 1809 /* If we are in the 'systemd-journal' group, we should have
1810 * access too. */
1811 r = in_group("systemd-journal");
1812 if (r < 0)
1813 return log_error_errno(r, "Failed to check if we are in the 'systemd-journal' group: %m");
1814 if (r > 0)
1815 return 0;
15804ceb 1816
e346512c
LP		 1817#ifdef HAVE_ACL
1818 if (laccess("/run/log/journal", F_OK) >= 0)
1819 dir = "/run/log/journal";
1820 else
1821 dir = "/var/log/journal";
1822
1823 /* If we are in any of the groups listed in the journal ACLs,
1824 * then all is good, too. Let's enumerate all groups from the
1825 * default ACL of the directory, which generally should allow
1826 * access to most journal files too. */
1827 r = acl_search_groups(dir, &g);
1828 if (r < 0)
1829 return log_error_errno(r, "Failed to search journal ACL: %m");
1830 if (r > 0)
1831 return 0;
4468addc 1832
e346512c
LP		 1833 /* Print a pretty list, if there were ACLs set. */
1834 if (!strv_isempty(g)) {
1835 _cleanup_free_ char *s = NULL;
4468addc 1836
e346512c
LP		 1837 /* Thre are groups in the ACL, let's list them */
1838 r = strv_extend(&g, "systemd-journal");
1839 if (r < 0)
1840 return log_oom();
6fe391c5 1841
e346512c
LP		 1842 strv_sort(g);
1843 strv_uniq(g);
6fe391c5 1844
e346512c
LP		 1845 s = strv_join(g, "', '");
1846 if (!s)
1847 return log_oom();
6fe391c5 1848
e346512c
LP		 1849 log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
1850 " Users in groups '%s' can see all messages.\n"
1851 " Pass -q to turn off this notice.", s);
1852 return 1;
6fe391c5 1853 }
e346512c 1854#endif
4468addc 1855
e346512c
LP		 1856 /* If no ACLs were found, print a short version of the message. */
1857 log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
1858 " Users in the 'systemd-journal' group can see all messages. Pass -q to\n"
1859 " turn off this notice.");
1860
1861 return 1;
6fe391c5 1862}
4468addc 1863
6fe391c5 1864static int access_check(sd_journal *j) {
6fe391c5 1865 Iterator it;
3ac251b8 1866 void *code;
5768d259 1867 char *path;
6fe391c5 1868 int r = 0;
4468addc 1869
6fe391c5 1870 assert(j);
4468addc 1871
5768d259 1872 if (hashmap_isempty(j->errors)) {
c1f906bd 1873 if (ordered_hashmap_isempty(j->files))
3ac251b8 1874 log_notice("No journal files were found.");
e346512c 1875
6fe391c5
ZJS		 1876 return 0;
1877 }
4468addc 1878
5768d259 1879 if (hashmap_contains(j->errors, INT_TO_PTR(-EACCES))) {
e346512c 1880 (void) access_check_var_log_journal(j);
3ac251b8 1881
e346512c
LP		 1882 if (ordered_hashmap_isempty(j->files))
1883 r = log_error_errno(EACCES, "No journal files were opened due to insufficient permissions.");
6fe391c5 1884 }
15804ceb 1885
5768d259 1886 HASHMAP_FOREACH_KEY(path, code, j->errors, it) {
3ac251b8
LP		 1887 int err;
1888
4f52b822 1889 err = abs(PTR_TO_INT(code));
3ac251b8 1890
5768d259
LP		 1891 switch (err) {
1892 case EACCES:
e346512c
LP		 1893 continue;
1894
5768d259
LP		 1895 case ENODATA:
1896 log_warning_errno(err, "Journal file %s is truncated, ignoring file.", path);
1897 break;
1898
1899 case EPROTONOSUPPORT:
1900 log_warning_errno(err, "Journal file %s uses an unsupported feature, ignoring file.", path);
1901 break;
1902
1903 case EBADMSG:
1904 log_warning_errno(err, "Journal file %s corrupted, ignoring file.", path);
1905 break;
1906
1907 default:
0f748872 1908 log_warning_errno(err, "An error was encountered while opening journal file or directory %s, ignoring file: %m", path);
5768d259
LP		 1909 break;
1910 }
6fe391c5
ZJS		 1911 }
1912
6fe391c5 1913 return r;
15804ceb
LP		 1914}
1915
74055aa7 1916static int flush_to_var(void) {
4afd3348
LP		 1917 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1918 _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
74055aa7
LP		 1919 _cleanup_close_ int watch_fd = -1;
1920 int r;
1921
176ee07b
LP		 1922 if (arg_machine) {
1923 log_error("--flush is not supported in conjunction with --machine=.");
1924 return -EOPNOTSUPP;
1925 }
1926
74055aa7
LP		 1927 /* Quick exit */
1928 if (access("/run/systemd/journal/flushed", F_OK) >= 0)
1929 return 0;
1930
1931 /* OK, let's actually do the full logic, send SIGUSR1 to the
1932 * daemon and set up inotify to wait for the flushed file to appear */
266f3e26 1933 r = bus_connect_system_systemd(&bus);
23bbb0de
MS		 1934 if (r < 0)
1935 return log_error_errno(r, "Failed to get D-Bus connection: %m");
74055aa7
LP		 1936
1937 r = sd_bus_call_method(
1938 bus,
1939 "org.freedesktop.systemd1",
1940 "/org/freedesktop/systemd1",
1941 "org.freedesktop.systemd1.Manager",
1942 "KillUnit",
1943 &error,
1944 NULL,
1945 "ssi", "systemd-journald.service", "main", SIGUSR1);
94b65516
LP		 1946 if (r < 0)
1947 return log_error_errno(r, "Failed to kill journal service: %s", bus_error_message(&error, r));
74055aa7
LP		 1948
1949 mkdir_p("/run/systemd/journal", 0755);
1950
1951 watch_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
4a62c710
MS		 1952 if (watch_fd < 0)
1953 return log_error_errno(errno, "Failed to create inotify watch: %m");
74055aa7
LP		 1954
1955 r = inotify_add_watch(watch_fd, "/run/systemd/journal", IN_CREATE|IN_DONT_FOLLOW|IN_ONLYDIR);
4a62c710
MS		 1956 if (r < 0)
1957 return log_error_errno(errno, "Failed to watch journal directory: %m");
74055aa7
LP		 1958
1959 for (;;) {
1960 if (access("/run/systemd/journal/flushed", F_OK) >= 0)
1961 break;
1962
4a62c710 1963 if (errno != ENOENT)
f131770b 1964 return log_error_errno(errno, "Failed to check for existence of /run/systemd/journal/flushed: %m");
74055aa7
LP		 1965
1966 r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY);
23bbb0de
MS		 1967 if (r < 0)
1968 return log_error_errno(r, "Failed to wait for event: %m");
74055aa7
LP		 1969
1970 r = flush_fd(watch_fd);
23bbb0de
MS		 1971 if (r < 0)
1972 return log_error_errno(r, "Failed to flush inotify events: %m");
74055aa7
LP		 1973 }
1974
1975 return 0;
1976}
1977
dbd6e31c 1978static int send_signal_and_wait(int sig, const char *watch_path) {
4afd3348 1979 _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
94b65516
LP		 1980 _cleanup_close_ int watch_fd = -1;
1981 usec_t start;
1982 int r;
1983
176ee07b
LP		 1984 if (arg_machine) {
1985 log_error("--sync and --rotate are not supported in conjunction with --machine=.");
1986 return -EOPNOTSUPP;
1987 }
1988
33d52ab9 1989 start = now(CLOCK_MONOTONIC);
94b65516 1990
dbd6e31c
LP		 1991 /* This call sends the specified signal to journald, and waits
1992 * for acknowledgment by watching the mtime of the specified
1993 * flag file. This is used to trigger syncing or rotation and
1994 * then wait for the operation to complete. */
94b65516
LP		 1995
1996 for (;;) {
33d52ab9 1997 usec_t tstamp;
94b65516
LP		 1998
1999 /* See if a sync happened by now. */
33d52ab9
LP		 2000 r = read_timestamp_file(watch_path, &tstamp);
2001 if (r < 0 && r != -ENOENT)
2002 return log_error_errno(errno, "Failed to read %s: %m", watch_path);
2003 if (r >= 0 && tstamp >= start)
2004 return 0;
94b65516
LP		 2005
2006 /* Let's ask for a sync, but only once. */
2007 if (!bus) {
4afd3348 2008 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
94b65516
LP		 2009
2010 r = bus_connect_system_systemd(&bus);
2011 if (r < 0)
2012 return log_error_errno(r, "Failed to get D-Bus connection: %m");
2013
2014 r = sd_bus_call_method(
2015 bus,
2016 "org.freedesktop.systemd1",
2017 "/org/freedesktop/systemd1",
2018 "org.freedesktop.systemd1.Manager",
2019 "KillUnit",
2020 &error,
2021 NULL,
dbd6e31c 2022 "ssi", "systemd-journald.service", "main", sig);
94b65516
LP		 2023 if (r < 0)
2024 return log_error_errno(r, "Failed to kill journal service: %s", bus_error_message(&error, r));
2025
2026 continue;
2027 }
2028
2029 /* Let's install the inotify watch, if we didn't do that yet. */
2030 if (watch_fd < 0) {
2031
2032 mkdir_p("/run/systemd/journal", 0755);
2033
2034 watch_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
2035 if (watch_fd < 0)
2036 return log_error_errno(errno, "Failed to create inotify watch: %m");
2037
33d52ab9 2038 r = inotify_add_watch(watch_fd, "/run/systemd/journal", IN_MOVED_TO|IN_DONT_FOLLOW|IN_ONLYDIR);
94b65516
LP		 2039 if (r < 0)
2040 return log_error_errno(errno, "Failed to watch journal directory: %m");
2041
2042 /* Recheck the flag file immediately, so that we don't miss any event since the last check. */
2043 continue;
2044 }
2045
2046 /* OK, all preparatory steps done, let's wait until
2047 * inotify reports an event. */
2048
2049 r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY);
2050 if (r < 0)
2051 return log_error_errno(r, "Failed to wait for event: %m");
2052
2053 r = flush_fd(watch_fd);
2054 if (r < 0)
2055 return log_error_errno(r, "Failed to flush inotify events: %m");
2056 }
2057
2058 return 0;
2059}
2060
dbd6e31c
LP		 2061static int rotate(void) {
2062 return send_signal_and_wait(SIGUSR2, "/run/systemd/journal/rotated");
2063}
2064
2065static int sync_journal(void) {
2066 return send_signal_and_wait(SIGRTMIN+1, "/run/systemd/journal/synced");
2067}
2068
a963990f
LP		 2069int main(int argc, char *argv[]) {
2070 int r;
4afd3348 2071 _cleanup_(sd_journal_closep) sd_journal *j = NULL;
a963990f 2072 bool need_seek = false;
14a65d65 2073 sd_id128_t previous_boot_id;
67e04a48
ZJS		 2074 bool previous_boot_id_valid = false, first_line = true;
2075 int n_shown = 0;
94e0bd7d 2076 bool ellipsized = false;
a963990f 2077
a9cdc94f 2078 setlocale(LC_ALL, "");
a963990f
LP		 2079 log_parse_environment();
2080 log_open();
2081
2082 r = parse_argv(argc, argv);
2083 if (r <= 0)
2084 goto finish;
2085
ed757c0c 2086 signal(SIGWINCH, columns_lines_cache_reset);
2cf4172a 2087 sigbus_install();
ed757c0c 2088
de45d726
LP		 2089 /* Increase max number of open files to 16K if we can, we
2090 * might needs this when browsing journal files, which might
2091 * be split up into many files. */
2092 setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(16384));
2093
a020b3b3 2094 switch (arg_action) {
94b65516 2095
a020b3b3
LP		 2096 case ACTION_NEW_ID128:
2097 r = generate_new_id128();
e3fdfb49 2098 goto finish;
e3fdfb49 2099
a020b3b3 2100 case ACTION_SETUP_KEYS:
7560fffc
LP		 2101 r = setup_keys();
2102 goto finish;
844ec79b 2103
a020b3b3
LP		 2104 case ACTION_LIST_CATALOG:
2105 case ACTION_DUMP_CATALOG:
2106 case ACTION_UPDATE_CATALOG: {
0c6ea3a4
ZJS		 2107 _cleanup_free_ char *database;
2108
2109 database = path_join(arg_root, CATALOG_DATABASE, NULL);
2110 if (!database) {
2111 r = log_oom();
2112 goto finish;
13cbf3a5
ZJS		 2113 }
2114
844ec79b 2115 if (arg_action == ACTION_UPDATE_CATALOG) {
13cbf3a5 2116 r = catalog_update(database, arg_root, catalog_file_dirs);
844ec79b 2117 if (r < 0)
da927ba9 2118 log_error_errno(r, "Failed to list catalog: %m");
844ec79b
ZJS		 2119 } else {
2120 bool oneline = arg_action == ACTION_LIST_CATALOG;
2121
ea4b98e6 2122 pager_open(arg_no_pager, arg_pager_end);
a020b3b3 2123
844ec79b 2124 if (optind < argc)
a020b3b3 2125 r = catalog_list_items(stdout, database, oneline, argv + optind);
844ec79b 2126 else
13cbf3a5 2127 r = catalog_list(stdout, database, oneline);
844ec79b 2128 if (r < 0)
da927ba9 2129 log_error_errno(r, "Failed to list catalog: %m");
844ec79b 2130 }
d4205751 2131
d4205751
LP		 2132 goto finish;
2133 }
2134
a020b3b3
LP		 2135 case ACTION_FLUSH:
2136 r = flush_to_var();
2137 goto finish;
2138
2139 case ACTION_SYNC:
2140 r = sync_journal();
2141 goto finish;
2142
2143 case ACTION_ROTATE:
2144 r = rotate();
2145 goto finish;
2146
2147 case ACTION_SHOW:
2148 case ACTION_PRINT_HEADER:
2149 case ACTION_VERIFY:
2150 case ACTION_DISK_USAGE:
2151 case ACTION_LIST_BOOTS:
2152 case ACTION_VACUUM:
69e714f3
LP		 2153 case ACTION_LIST_FIELDS:
2154 case ACTION_LIST_FIELD_NAMES:
a020b3b3
LP		 2155 /* These ones require access to the journal files, continue below. */
2156 break;
2157
2158 default:
2159 assert_not_reached("Unknown action");
2160 }
2161
a963990f 2162 if (arg_directory)
3f3a438f 2163 r = sd_journal_open_directory(&j, arg_directory, arg_journal_type);
0a175093
ZJS		 2164 else if (arg_root)
2165 r = sd_journal_open_directory(&j, arg_root, arg_journal_type | SD_JOURNAL_OS_ROOT);
5d1ce257
LP		 2166 else if (arg_file_stdin) {
2167 int ifd = STDIN_FILENO;
2168 r = sd_journal_open_files_fd(&j, &ifd, 1, 0);
2169 } else if (arg_file)
8d98da3f 2170 r = sd_journal_open_files(&j, (const char**) arg_file, 0);
d38c62cc
LP		 2171 else if (arg_machine) {
2172 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2173 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2174 _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
2175 int fd;
2176
2177 if (geteuid() != 0) {
2178 /* The file descriptor returned by OpenMachineRootDirectory() will be owned by users/groups of
2179 * the container, thus we need root privileges to override them. */
2180 log_error("Using the --machine= switch requires root privileges.");
2181 r = -EPERM;
2182 goto finish;
2183 }
2184
2185 r = sd_bus_open_system(&bus);
2186 if (r < 0) {
2187 log_error_errno(r, "Failed to open system bus: %m");
2188 goto finish;
2189 }
2190
2191 r = sd_bus_call_method(
2192 bus,
2193 "org.freedesktop.machine1",
2194 "/org/freedesktop/machine1",
2195 "org.freedesktop.machine1.Manager",
2196 "OpenMachineRootDirectory",
2197 &error,
2198 &reply,
2199 "s", arg_machine);
2200 if (r < 0) {
2201 log_error_errno(r, "Failed to open root directory: %s", bus_error_message(&error, r));
2202 goto finish;
2203 }
2204
2205 r = sd_bus_message_read(reply, "h", &fd);
2206 if (r < 0) {
2207 bus_log_parse_error(r);
2208 goto finish;
2209 }
2210
2211 fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
2212 if (fd < 0) {
2213 r = log_error_errno(errno, "Failed to duplicate file descriptor: %m");
2214 goto finish;
2215 }
2216
2217 r = sd_journal_open_directory_fd(&j, fd, SD_JOURNAL_OS_ROOT);
2218 if (r < 0)
2219 safe_close(fd);
2220 } else
3f3a438f 2221 r = sd_journal_open(&j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type);
a963990f 2222 if (r < 0) {
a020b3b3 2223 log_error_errno(r, "Failed to open %s: %m", arg_directory ?: arg_file ? "files" : "journal");
909dea0c 2224 goto finish;
a963990f
LP		 2225 }
2226
6fe391c5
ZJS		 2227 r = access_check(j);
2228 if (r < 0)
909dea0c 2229 goto finish;
6fe391c5 2230
a020b3b3 2231 switch (arg_action) {
beec0085 2232
a020b3b3
LP		 2233 case ACTION_NEW_ID128:
2234 case ACTION_SETUP_KEYS:
2235 case ACTION_LIST_CATALOG:
2236 case ACTION_DUMP_CATALOG:
2237 case ACTION_UPDATE_CATALOG:
2238 case ACTION_FLUSH:
2239 case ACTION_SYNC:
2240 case ACTION_ROTATE:
2241 assert_not_reached("Unexpected action.");
2242
2243 case ACTION_PRINT_HEADER:
dca6219e 2244 journal_print_header(j);
909dea0c
LP		 2245 r = 0;
2246 goto finish;
dca6219e 2247
a020b3b3
LP		 2248 case ACTION_VERIFY:
2249 r = verify(j);
2250 goto finish;
2251
2252 case ACTION_DISK_USAGE: {
39883f62 2253 uint64_t bytes = 0;
a1a03e30
LP		 2254 char sbytes[FORMAT_BYTES_MAX];
2255
2256 r = sd_journal_get_usage(j, &bytes);
2257 if (r < 0)
909dea0c 2258 goto finish;
a1a03e30 2259
dbd2a83f 2260 printf("Archived and active journals take up %s on disk.\n",
763c7aa2 2261 format_bytes(sbytes, sizeof(sbytes), bytes));
909dea0c 2262 goto finish;
a1a03e30
LP		 2263 }
2264
a020b3b3
LP		 2265 case ACTION_LIST_BOOTS:
2266 r = list_boots(j);
2267 goto finish;
2268
2269 case ACTION_VACUUM: {
dbd2a83f
LP		 2270 Directory *d;
2271 Iterator i;
2272
2273 HASHMAP_FOREACH(d, j->directories_by_path, i) {
2274 int q;
2275
2276 if (d->is_root)
2277 continue;
2278
8580d1f7 2279 q = journal_directory_vacuum(d->path, arg_vacuum_size, arg_vacuum_n_files, arg_vacuum_time, NULL, true);
dbd2a83f 2280 if (q < 0) {
8580d1f7 2281 log_error_errno(q, "Failed to vacuum %s: %m", d->path);
dbd2a83f
LP		 2282 r = q;
2283 }
2284 }
2285
909dea0c 2286 goto finish;
dbd2a83f
LP		 2287 }
2288
69e714f3
LP		 2289 case ACTION_LIST_FIELD_NAMES: {
2290 const char *field;
2291
2292 SD_JOURNAL_FOREACH_FIELD(j, field) {
2293 printf("%s\n", field);
313cefa1 2294 n_shown++;
69e714f3
LP		 2295 }
2296
2297 r = 0;
2298 goto finish;
2299 }
2300
a020b3b3 2301 case ACTION_SHOW:
69e714f3 2302 case ACTION_LIST_FIELDS:
a020b3b3
LP		 2303 break;
2304
2305 default:
2306 assert_not_reached("Unknown action");
f1188074
ZJS		 2307 }
2308
0f1a9a83
JS		 2309 if (arg_boot_offset != 0 &&
2310 sd_journal_has_runtime_files(j) > 0 &&
2311 sd_journal_has_persistent_files(j) == 0) {
2312 log_info("Specifying boot ID has no effect, no persistent journal was found");
2313 r = 0;
2314 goto finish;
2315 }
a331b5e6
JJ		 2316 /* add_boot() must be called first!
2317 * It may need to seek the journal to find parent boot IDs. */
2318 r = add_boot(j);
a963990f 2319 if (r < 0)
909dea0c 2320 goto finish;
a963990f 2321
99271804
ZJS		 2322 r = add_dmesg(j);
2323 if (r < 0)
909dea0c 2324 goto finish;
99271804 2325
b9e40524 2326 r = add_units(j);
ea18a4b5 2327 if (r < 0) {
da927ba9 2328 log_error_errno(r, "Failed to add filter for units: %m");
909dea0c 2329 goto finish;
ea18a4b5 2330 }
c3f60ec5 2331
73083640
HH		 2332 r = add_syslog_identifier(j);
2333 if (r < 0) {
da927ba9 2334 log_error_errno(r, "Failed to add filter for syslog identifiers: %m");
909dea0c 2335 goto finish;
73083640
HH		 2336 }
2337
cd34b3c6 2338 r = add_priorities(j);
b56d608e 2339 if (r < 0)
909dea0c 2340 goto finish;
a963990f 2341
cd34b3c6 2342 r = add_matches(j, argv + optind);
b56d608e 2343 if (r < 0)
909dea0c 2344 goto finish;
941e990d 2345
553d2243 2346 if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) {
4ad16808
ZJS		 2347 _cleanup_free_ char *filter;
2348
2349 filter = journal_make_match_string(j);
b56d608e
LP		 2350 if (!filter)
2351 return log_oom();
2352
4ad16808
ZJS		 2353 log_debug("Journal filter: %s", filter);
2354 }
67e04a48 2355
69e714f3 2356 if (arg_action == ACTION_LIST_FIELDS) {
15119c16
LP		 2357 const void *data;
2358 size_t size;
2359
69e714f3
LP		 2360 assert(arg_field);
2361
21ae4593
ZJS		 2362 r = sd_journal_set_data_threshold(j, 0);
2363 if (r < 0) {
b56d608e 2364 log_error_errno(r, "Failed to unset data size threshold: %m");
909dea0c 2365 goto finish;
21ae4593
ZJS		 2366 }
2367
15119c16
LP		 2368 r = sd_journal_query_unique(j, arg_field);
2369 if (r < 0) {
da927ba9 2370 log_error_errno(r, "Failed to query unique data objects: %m");
909dea0c 2371 goto finish;
15119c16
LP		 2372 }
2373
2374 SD_JOURNAL_FOREACH_UNIQUE(j, data, size) {
2375 const void *eq;
2376
67e04a48 2377 if (arg_lines >= 0 && n_shown >= arg_lines)
fd6e8875
LP		 2378 break;
2379
15119c16
LP		 2380 eq = memchr(data, '=', size);
2381 if (eq)
2382 printf("%.*s\n", (int) (size - ((const uint8_t*) eq - (const uint8_t*) data + 1)), (const char*) eq + 1);
2383 else
2384 printf("%.*s\n", (int) size, (const char*) data);
fd6e8875 2385
313cefa1 2386 n_shown++;
15119c16
LP		 2387 }
2388
909dea0c
LP		 2389 r = 0;
2390 goto finish;
15119c16
LP		 2391 }
2392
8d98da3f
ZJS		 2393 /* Opening the fd now means the first sd_journal_wait() will actually wait */
2394 if (arg_follow) {
2395 r = sd_journal_get_fd(j);
5d1ce257
LP		 2396 if (r == -EMEDIUMTYPE) {
2397 log_error_errno(r, "The --follow switch is not supported in conjunction with reading from STDIN.");
2398 goto finish;
2399 }
b56d608e
LP		 2400 if (r < 0) {
2401 log_error_errno(r, "Failed to get journal fd: %m");
909dea0c 2402 goto finish;
b56d608e 2403 }
8d98da3f
ZJS		 2404 }
2405
248fc619 2406 if (arg_cursor || arg_after_cursor) {
eacbb4d3 2407 r = sd_journal_seek_cursor(j, arg_cursor ?: arg_after_cursor);
08984293 2408 if (r < 0) {
da927ba9 2409 log_error_errno(r, "Failed to seek to cursor: %m");
909dea0c 2410 goto finish;
08984293 2411 }
909dea0c 2412
d89d6c86 2413 if (!arg_reverse)
248fc619 2414 r = sd_journal_next_skip(j, 1 + !!arg_after_cursor);
d89d6c86 2415 else
248fc619
ZJS		 2416 r = sd_journal_previous_skip(j, 1 + !!arg_after_cursor);
2417
8ee8e536 2418 if (arg_after_cursor && r < 2) {
248fc619 2419 /* We couldn't find the next entry after the cursor. */
8ee8e536
WD		 2420 if (arg_follow)
2421 need_seek = true;
2422 else
2423 arg_lines = 0;
2424 }
08984293 2425
d89d6c86 2426 } else if (arg_since_set && !arg_reverse) {
cfbc22ab 2427 r = sd_journal_seek_realtime_usec(j, arg_since);
8f14c832 2428 if (r < 0) {
da927ba9 2429 log_error_errno(r, "Failed to seek to date: %m");
909dea0c 2430 goto finish;
8f14c832 2431 }
8f14c832
LP		 2432 r = sd_journal_next(j);
2433
d89d6c86
LN		 2434 } else if (arg_until_set && arg_reverse) {
2435 r = sd_journal_seek_realtime_usec(j, arg_until);
2436 if (r < 0) {
da927ba9 2437 log_error_errno(r, "Failed to seek to date: %m");
909dea0c 2438 goto finish;
d89d6c86
LN		 2439 }
2440 r = sd_journal_previous(j);
2441
67e04a48 2442 } else if (arg_lines >= 0) {
2100675e
LP		 2443 r = sd_journal_seek_tail(j);
2444 if (r < 0) {
da927ba9 2445 log_error_errno(r, "Failed to seek to tail: %m");
909dea0c 2446 goto finish;
2100675e
LP		 2447 }
2448
2449 r = sd_journal_previous_skip(j, arg_lines);
8f14c832 2450
d89d6c86
LN		 2451 } else if (arg_reverse) {
2452 r = sd_journal_seek_tail(j);
2453 if (r < 0) {
da927ba9 2454 log_error_errno(r, "Failed to seek to tail: %m");
909dea0c 2455 goto finish;
d89d6c86
LN		 2456 }
2457
2458 r = sd_journal_previous(j);
2459
2100675e
LP		 2460 } else {
2461 r = sd_journal_seek_head(j);
2462 if (r < 0) {
da927ba9 2463 log_error_errno(r, "Failed to seek to head: %m");
909dea0c 2464 goto finish;
2100675e 2465 }
6f003b43
LP		 2466
2467 r = sd_journal_next(j);
2468 }
2469
2470 if (r < 0) {
da927ba9 2471 log_error_errno(r, "Failed to iterate through journal: %m");
909dea0c 2472 goto finish;
50f20cfd 2473 }
02ab86c7 2474 if (r == 0) {
c51e1a96
SW		 2475 if (arg_follow)
2476 need_seek = true;
2477 else {
bfcb7c5f
EV		 2478 if (!arg_quiet)
2479 printf("-- No entries --\n");
c51e1a96
SW		 2480 goto finish;
2481 }
02ab86c7 2482 }
87d2c1ff 2483
faf5077f 2484 if (!arg_follow)
ea4b98e6 2485 pager_open(arg_no_pager, arg_pager_end);
0d43c694 2486
cfbc22ab
LP		 2487 if (!arg_quiet) {
2488 usec_t start, end;
2489 char start_buf[FORMAT_TIMESTAMP_MAX], end_buf[FORMAT_TIMESTAMP_MAX];
2490
2491 r = sd_journal_get_cutoff_realtime_usec(j, &start, &end);
2492 if (r < 0) {
da927ba9 2493 log_error_errno(r, "Failed to get cutoff: %m");
cfbc22ab
LP		 2494 goto finish;
2495 }
2496
2497 if (r > 0) {
2498 if (arg_follow)
9048b11f 2499 printf("-- Logs begin at %s. --\n",
5ab99e07 2500 format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start));
cfbc22ab 2501 else
9048b11f 2502 printf("-- Logs begin at %s, end at %s. --\n",
5ab99e07
LP		 2503 format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start),
2504 format_timestamp_maybe_utc(end_buf, sizeof(end_buf), end));
cfbc22ab
LP		 2505 }
2506 }
2507
50f20cfd 2508 for (;;) {
67e04a48 2509 while (arg_lines < 0 || n_shown < arg_lines || (arg_follow && !first_line)) {
cfbc22ab
LP		 2510 int flags;
2511
6f003b43 2512 if (need_seek) {
99613ec5 2513 if (!arg_reverse)
d89d6c86
LN		 2514 r = sd_journal_next(j);
2515 else
2516 r = sd_journal_previous(j);
6f003b43 2517 if (r < 0) {
da927ba9 2518 log_error_errno(r, "Failed to iterate through journal: %m");
6f003b43
LP		 2519 goto finish;
2520 }
a72b6353
ZJS		 2521 if (r == 0)
2522 break;
0d43c694
LP		 2523 }
2524
d89d6c86 2525 if (arg_until_set && !arg_reverse) {
cfbc22ab
LP		 2526 usec_t usec;
2527
2528 r = sd_journal_get_realtime_usec(j, &usec);
2529 if (r < 0) {
da927ba9 2530 log_error_errno(r, "Failed to determine timestamp: %m");
cfbc22ab
LP		 2531 goto finish;
2532 }
3ba09ee8
PF		 2533 if (usec > arg_until)
2534 goto finish;
cfbc22ab
LP		 2535 }
2536
d89d6c86
LN		 2537 if (arg_since_set && arg_reverse) {
2538 usec_t usec;
2539
2540 r = sd_journal_get_realtime_usec(j, &usec);
2541 if (r < 0) {
da927ba9 2542 log_error_errno(r, "Failed to determine timestamp: %m");
d89d6c86
LN		 2543 goto finish;
2544 }
2545 if (usec < arg_since)
2546 goto finish;
2547 }
2548
4bed2485 2549 if (!arg_merge && !arg_quiet) {
cd931c0a 2550 sd_id128_t boot_id;
14a65d65 2551
cd931c0a
LP		 2552 r = sd_journal_get_monotonic_usec(j, NULL, &boot_id);
2553 if (r >= 0) {
2554 if (previous_boot_id_valid &&
2555 !sd_id128_equal(boot_id, previous_boot_id))
0b5a519c 2556 printf("%s-- Reboot --%s\n",
1fc464f6 2557 ansi_highlight(), ansi_normal());
cd931c0a
LP		 2558
2559 previous_boot_id = boot_id;
2560 previous_boot_id_valid = true;
2561 }
14a65d65
LP		 2562 }
2563
cfbc22ab 2564 flags =
cd4b13e0 2565 arg_all * OUTPUT_SHOW_ALL |
2b8f6883 2566 arg_full * OUTPUT_FULL_WIDTH |
40c9fe4c 2567 colors_enabled() * OUTPUT_COLOR |
9fd29044 2568 arg_catalog * OUTPUT_CATALOG |
991e274b
LP		 2569 arg_utc * OUTPUT_UTC |
2570 arg_no_hostname * OUTPUT_NO_HOSTNAME;
cfbc22ab 2571
94e0bd7d 2572 r = output_journal(stdout, j, arg_output, 0, flags, &ellipsized);
a72b6353
ZJS		 2573 need_seek = true;
2574 if (r == -EADDRNOTAVAIL)
2575 break;
2576 else if (r < 0 || ferror(stdout))
72f59706 2577 goto finish;
6f003b43 2578
cfbc22ab 2579 n_shown++;
87d2c1ff
LP		 2580 }
2581
248fc619
ZJS		 2582 if (!arg_follow) {
2583 if (arg_show_cursor) {
2584 _cleanup_free_ char *cursor = NULL;
2585
2586 r = sd_journal_get_cursor(j, &cursor);
2587 if (r < 0 && r != -EADDRNOTAVAIL)
da927ba9 2588 log_error_errno(r, "Failed to get cursor: %m");
248fc619
ZJS		 2589 else if (r >= 0)
2590 printf("-- cursor: %s\n", cursor);
2591 }
2592
50f20cfd 2593 break;
248fc619 2594 }
50f20cfd 2595
e02d1cf7 2596 r = sd_journal_wait(j, (uint64_t) -1);
50f20cfd 2597 if (r < 0) {
da927ba9 2598 log_error_errno(r, "Couldn't wait for journal event: %m");
50f20cfd
LP		 2599 goto finish;
2600 }
67e04a48
ZJS		 2601
2602 first_line = false;
de190aef 2603 }
87d2c1ff
LP		 2604
2605finish:
0d43c694
LP		 2606 pager_close();
2607
a36b8deb
ZJS		 2608 strv_free(arg_file);
2609
d52da205
LP		 2610 strv_free(arg_syslog_identifier);
2611 strv_free(arg_system_units);
2612 strv_free(arg_user_units);
2613
0f03c2a4
LP		 2614 free(arg_root);
2615
3fbf9cbb 2616 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
87d2c1ff 2617}
Unnamed repository; edit this file 'description' to name the repository.