1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2011 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
35 #include <sys/inotify.h>
38 #include "sd-journal.h"
41 #include "logs-show.h"
44 #include "path-util.h"
51 #include "journal-internal.h"
52 #include "journal-def.h"
53 #include "journal-verify.h"
54 #include "journal-qrcode.h"
55 #include "journal-vacuum.h"
57 #include "unit-name.h"
61 #include "bus-error.h"
62 #include "terminal-util.h"
63 #include "hostname-util.h"
65 #define DEFAULT_FSS_INTERVAL_USEC (15*USEC_PER_MINUTE)
68 /* Special values for arg_lines */
69 ARG_LINES_DEFAULT
= -2,
73 static OutputMode arg_output
= OUTPUT_SHORT
;
74 static bool arg_utc
= false;
75 static bool arg_pager_end
= false;
76 static bool arg_follow
= false;
77 static bool arg_full
= true;
78 static bool arg_all
= false;
79 static bool arg_no_pager
= false;
80 static int arg_lines
= ARG_LINES_DEFAULT
;
81 static bool arg_no_tail
= false;
82 static bool arg_quiet
= false;
83 static bool arg_merge
= false;
84 static bool arg_boot
= false;
85 static sd_id128_t arg_boot_id
= {};
86 static int arg_boot_offset
= 0;
87 static bool arg_dmesg
= false;
88 static const char *arg_cursor
= NULL
;
89 static const char *arg_after_cursor
= NULL
;
90 static bool arg_show_cursor
= false;
91 static const char *arg_directory
= NULL
;
92 static char **arg_file
= NULL
;
93 static int arg_priorities
= 0xFF;
94 static const char *arg_verify_key
= NULL
;
96 static usec_t arg_interval
= DEFAULT_FSS_INTERVAL_USEC
;
97 static bool arg_force
= false;
99 static usec_t arg_since
, arg_until
;
100 static bool arg_since_set
= false, arg_until_set
= false;
101 static char **arg_syslog_identifier
= NULL
;
102 static char **arg_system_units
= NULL
;
103 static char **arg_user_units
= NULL
;
104 static const char *arg_field
= NULL
;
105 static bool arg_catalog
= false;
106 static bool arg_reverse
= false;
107 static int arg_journal_type
= 0;
108 static const char *arg_root
= NULL
;
109 static const char *arg_machine
= NULL
;
110 static uint64_t arg_vacuum_size
= (uint64_t) -1;
111 static usec_t arg_vacuum_time
= USEC_INFINITY
;
122 ACTION_UPDATE_CATALOG
,
126 } arg_action
= ACTION_SHOW
;
128 typedef struct BootId
{
132 LIST_FIELDS(struct BootId
, boot_list
);
135 static void pager_open_if_enabled(void) {
140 pager_open(arg_pager_end
);
143 static char *format_timestamp_maybe_utc(char *buf
, size_t l
, usec_t t
) {
146 return format_timestamp_utc(buf
, l
, t
);
148 return format_timestamp(buf
, l
, t
);
151 static int parse_boot_descriptor(const char *x
, sd_id128_t
*boot_id
, int *offset
) {
152 sd_id128_t id
= SD_ID128_NULL
;
155 if (strlen(x
) >= 32) {
159 r
= sd_id128_from_string(t
, &id
);
163 if (*x
!= '-' && *x
!= '+' && *x
!= 0)
167 r
= safe_atoi(x
, &off
);
172 r
= safe_atoi(x
, &off
);
186 static void help(void) {
188 pager_open_if_enabled();
190 printf("%s [OPTIONS...] [MATCHES...]\n\n"
191 "Query the journal.\n\n"
193 " --system Show the system journal\n"
194 " --user Show the user journal for the current user\n"
195 " -M --machine=CONTAINER Operate on local container\n"
196 " --since=DATE Show entries not older than the specified date\n"
197 " --until=DATE Show entries not newer than the specified date\n"
198 " -c --cursor=CURSOR Show entries starting at the specified cursor\n"
199 " --after-cursor=CURSOR Show entries after the specified cursor\n"
200 " --show-cursor Print the cursor after all the entries\n"
201 " -b --boot[=ID] Show current boot or the specified boot\n"
202 " --list-boots Show terse information about recorded boots\n"
203 " -k --dmesg Show kernel message log from the current boot\n"
204 " -u --unit=UNIT Show logs from the specified unit\n"
205 " --user-unit=UNIT Show logs from the specified user unit\n"
206 " -t --identifier=STRING Show entries with the specified syslog identifier\n"
207 " -p --priority=RANGE Show entries with the specified priority\n"
208 " -e --pager-end Immediately jump to the end in the pager\n"
209 " -f --follow Follow the journal\n"
210 " -n --lines[=INTEGER] Number of journal entries to show\n"
211 " --no-tail Show all lines, even in follow mode\n"
212 " -r --reverse Show the newest entries first\n"
213 " -o --output=STRING Change journal output mode (short, short-iso,\n"
214 " short-precise, short-monotonic, verbose,\n"
215 " export, json, json-pretty, json-sse, cat)\n"
216 " --utc Express time in Coordinated Universal Time (UTC)\n"
217 " -x --catalog Add message explanations where available\n"
218 " --no-full Ellipsize fields\n"
219 " -a --all Show all fields, including long and unprintable\n"
220 " -q --quiet Do not show privilege warning\n"
221 " --no-pager Do not pipe output into a pager\n"
222 " -m --merge Show entries from all available journals\n"
223 " -D --directory=PATH Show journal files from directory\n"
224 " --file=PATH Show journal file\n"
225 " --root=ROOT Operate on catalog files underneath the root ROOT\n"
227 " --interval=TIME Time interval for changing the FSS sealing key\n"
228 " --verify-key=KEY Specify FSS verification key\n"
229 " --force Override of the FSS key pair with --setup-keys\n"
232 " -h --help Show this help text\n"
233 " --version Show package version\n"
234 " -F --field=FIELD List all values that a specified field takes\n"
235 " --new-id128 Generate a new 128-bit ID\n"
236 " --disk-usage Show total disk usage of all journal files\n"
237 " --vacuum-size=BYTES Reduce disk usage below specified size\n"
238 " --vacuum-time=TIME Remove journal files older than specified date\n"
239 " --flush Flush all journal data from /run into /var\n"
240 " --header Show journal header information\n"
241 " --list-catalog Show all message IDs in the catalog\n"
242 " --dump-catalog Show entries in the message catalog\n"
243 " --update-catalog Update the message catalog database\n"
245 " --setup-keys Generate a new FSS key pair\n"
246 " --verify Verify journal file consistency\n"
248 , program_invocation_short_name
);
251 static int parse_argv(int argc
, char *argv
[]) {
285 static const struct option options
[] = {
286 { "help", no_argument
, NULL
, 'h' },
287 { "version" , no_argument
, NULL
, ARG_VERSION
},
288 { "no-pager", no_argument
, NULL
, ARG_NO_PAGER
},
289 { "pager-end", no_argument
, NULL
, 'e' },
290 { "follow", no_argument
, NULL
, 'f' },
291 { "force", no_argument
, NULL
, ARG_FORCE
},
292 { "output", required_argument
, NULL
, 'o' },
293 { "all", no_argument
, NULL
, 'a' },
294 { "full", no_argument
, NULL
, 'l' },
295 { "no-full", no_argument
, NULL
, ARG_NO_FULL
},
296 { "lines", optional_argument
, NULL
, 'n' },
297 { "no-tail", no_argument
, NULL
, ARG_NO_TAIL
},
298 { "new-id128", no_argument
, NULL
, ARG_NEW_ID128
},
299 { "quiet", no_argument
, NULL
, 'q' },
300 { "merge", no_argument
, NULL
, 'm' },
301 { "boot", optional_argument
, NULL
, 'b' },
302 { "list-boots", no_argument
, NULL
, ARG_LIST_BOOTS
},
303 { "this-boot", optional_argument
, NULL
, 'b' }, /* deprecated */
304 { "dmesg", no_argument
, NULL
, 'k' },
305 { "system", no_argument
, NULL
, ARG_SYSTEM
},
306 { "user", no_argument
, NULL
, ARG_USER
},
307 { "directory", required_argument
, NULL
, 'D' },
308 { "file", required_argument
, NULL
, ARG_FILE
},
309 { "root", required_argument
, NULL
, ARG_ROOT
},
310 { "header", no_argument
, NULL
, ARG_HEADER
},
311 { "identifier", required_argument
, NULL
, 't' },
312 { "priority", required_argument
, NULL
, 'p' },
313 { "setup-keys", no_argument
, NULL
, ARG_SETUP_KEYS
},
314 { "interval", required_argument
, NULL
, ARG_INTERVAL
},
315 { "verify", no_argument
, NULL
, ARG_VERIFY
},
316 { "verify-key", required_argument
, NULL
, ARG_VERIFY_KEY
},
317 { "disk-usage", no_argument
, NULL
, ARG_DISK_USAGE
},
318 { "cursor", required_argument
, NULL
, 'c' },
319 { "after-cursor", required_argument
, NULL
, ARG_AFTER_CURSOR
},
320 { "show-cursor", no_argument
, NULL
, ARG_SHOW_CURSOR
},
321 { "since", required_argument
, NULL
, ARG_SINCE
},
322 { "until", required_argument
, NULL
, ARG_UNTIL
},
323 { "unit", required_argument
, NULL
, 'u' },
324 { "user-unit", required_argument
, NULL
, ARG_USER_UNIT
},
325 { "field", required_argument
, NULL
, 'F' },
326 { "catalog", no_argument
, NULL
, 'x' },
327 { "list-catalog", no_argument
, NULL
, ARG_LIST_CATALOG
},
328 { "dump-catalog", no_argument
, NULL
, ARG_DUMP_CATALOG
},
329 { "update-catalog", no_argument
, NULL
, ARG_UPDATE_CATALOG
},
330 { "reverse", no_argument
, NULL
, 'r' },
331 { "machine", required_argument
, NULL
, 'M' },
332 { "utc", no_argument
, NULL
, ARG_UTC
},
333 { "flush", no_argument
, NULL
, ARG_FLUSH
},
334 { "vacuum-size", required_argument
, NULL
, ARG_VACUUM_SIZE
},
335 { "vacuum-time", required_argument
, NULL
, ARG_VACUUM_TIME
},
344 while ((c
= getopt_long(argc
, argv
, "hefo:aln::qmb::kD:p:c:t:u:F:xrM:", options
, NULL
)) >= 0)
353 puts(PACKAGE_STRING
);
354 puts(SYSTEMD_FEATURES
);
362 arg_pager_end
= true;
364 if (arg_lines
== ARG_LINES_DEFAULT
)
374 arg_output
= output_mode_from_string(optarg
);
375 if (arg_output
< 0) {
376 log_error("Unknown output format '%s'.", optarg
);
380 if (arg_output
== OUTPUT_EXPORT
||
381 arg_output
== OUTPUT_JSON
||
382 arg_output
== OUTPUT_JSON_PRETTY
||
383 arg_output
== OUTPUT_JSON_SSE
||
384 arg_output
== OUTPUT_CAT
)
403 if (streq(optarg
, "all"))
404 arg_lines
= ARG_LINES_ALL
;
406 r
= safe_atoi(optarg
, &arg_lines
);
407 if (r
< 0 || arg_lines
< 0) {
408 log_error("Failed to parse lines '%s'", optarg
);
415 /* Hmm, no argument? Maybe the next
416 * word on the command line is
417 * supposed to be the argument? Let's
418 * see if there is one, and is
422 if (streq(argv
[optind
], "all")) {
423 arg_lines
= ARG_LINES_ALL
;
425 } else if (safe_atoi(argv
[optind
], &n
) >= 0 && n
>= 0) {
439 arg_action
= ACTION_NEW_ID128
;
454 r
= parse_boot_descriptor(optarg
, &arg_boot_id
, &arg_boot_offset
);
456 log_error("Failed to parse boot descriptor '%s'", optarg
);
461 /* Hmm, no argument? Maybe the next
462 * word on the command line is
463 * supposed to be the argument? Let's
464 * see if there is one and is parsable
465 * as a boot descriptor... */
468 parse_boot_descriptor(argv
[optind
], &arg_boot_id
, &arg_boot_offset
) >= 0)
475 arg_action
= ACTION_LIST_BOOTS
;
479 arg_boot
= arg_dmesg
= true;
483 arg_journal_type
|= SD_JOURNAL_SYSTEM
;
487 arg_journal_type
|= SD_JOURNAL_CURRENT_USER
;
491 arg_machine
= optarg
;
495 arg_directory
= optarg
;
499 r
= glob_extend(&arg_file
, optarg
);
501 return log_error_errno(r
, "Failed to add paths: %m");
512 case ARG_AFTER_CURSOR
:
513 arg_after_cursor
= optarg
;
516 case ARG_SHOW_CURSOR
:
517 arg_show_cursor
= true;
521 arg_action
= ACTION_PRINT_HEADER
;
525 arg_action
= ACTION_VERIFY
;
529 arg_action
= ACTION_DISK_USAGE
;
532 case ARG_VACUUM_SIZE
:
533 r
= parse_size(optarg
, 1024, &arg_vacuum_size
);
535 log_error("Failed to parse vacuum size: %s", optarg
);
539 arg_action
= ACTION_VACUUM
;
542 case ARG_VACUUM_TIME
:
543 r
= parse_sec(optarg
, &arg_vacuum_time
);
545 log_error("Failed to parse vacuum time: %s", optarg
);
549 arg_action
= ACTION_VACUUM
;
558 arg_action
= ACTION_SETUP_KEYS
;
563 arg_action
= ACTION_VERIFY
;
564 arg_verify_key
= optarg
;
569 r
= parse_sec(optarg
, &arg_interval
);
570 if (r
< 0 || arg_interval
<= 0) {
571 log_error("Failed to parse sealing key change interval: %s", optarg
);
580 log_error("Forward-secure sealing not available.");
587 dots
= strstr(optarg
, "..");
593 a
= strndup(optarg
, dots
- optarg
);
597 from
= log_level_from_string(a
);
598 to
= log_level_from_string(dots
+ 2);
601 if (from
< 0 || to
< 0) {
602 log_error("Failed to parse log level range %s", optarg
);
609 for (i
= from
; i
<= to
; i
++)
610 arg_priorities
|= 1 << i
;
612 for (i
= to
; i
<= from
; i
++)
613 arg_priorities
|= 1 << i
;
619 p
= log_level_from_string(optarg
);
621 log_error("Unknown log level %s", optarg
);
627 for (i
= 0; i
<= p
; i
++)
628 arg_priorities
|= 1 << i
;
635 r
= parse_timestamp(optarg
, &arg_since
);
637 log_error("Failed to parse timestamp: %s", optarg
);
640 arg_since_set
= true;
644 r
= parse_timestamp(optarg
, &arg_until
);
646 log_error("Failed to parse timestamp: %s", optarg
);
649 arg_until_set
= true;
653 r
= strv_extend(&arg_syslog_identifier
, optarg
);
659 r
= strv_extend(&arg_system_units
, optarg
);
665 r
= strv_extend(&arg_user_units
, optarg
);
678 case ARG_LIST_CATALOG
:
679 arg_action
= ACTION_LIST_CATALOG
;
682 case ARG_DUMP_CATALOG
:
683 arg_action
= ACTION_DUMP_CATALOG
;
686 case ARG_UPDATE_CATALOG
:
687 arg_action
= ACTION_UPDATE_CATALOG
;
699 arg_action
= ACTION_FLUSH
;
706 assert_not_reached("Unhandled option");
709 if (arg_follow
&& !arg_no_tail
&& !arg_since
&& arg_lines
== ARG_LINES_DEFAULT
)
712 if (!!arg_directory
+ !!arg_file
+ !!arg_machine
> 1) {
713 log_error("Please specify either -D/--directory= or --file= or -M/--machine=, not more than one.");
717 if (arg_since_set
&& arg_until_set
&& arg_since
> arg_until
) {
718 log_error("--since= must be before --until=.");
722 if (!!arg_cursor
+ !!arg_after_cursor
+ !!arg_since_set
> 1) {
723 log_error("Please specify only one of --since=, --cursor=, and --after-cursor.");
727 if (arg_follow
&& arg_reverse
) {
728 log_error("Please specify either --reverse= or --follow=, not both.");
732 if (arg_action
!= ACTION_SHOW
&& optind
< argc
) {
733 log_error("Extraneous arguments starting with '%s'", argv
[optind
]);
737 if ((arg_boot
|| arg_action
== ACTION_LIST_BOOTS
) && (arg_file
|| arg_directory
|| arg_merge
)) {
738 log_error("Using --boot or --list-boots with --file, --directory or --merge is not supported.");
745 static int generate_new_id128(void) {
750 r
= sd_id128_randomize(&id
);
752 return log_error_errno(r
, "Failed to generate ID: %m");
754 printf("As string:\n"
755 SD_ID128_FORMAT_STR
"\n\n"
757 "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n\n"
759 "#define MESSAGE_XYZ SD_ID128_MAKE(",
760 SD_ID128_FORMAT_VAL(id
),
761 SD_ID128_FORMAT_VAL(id
));
762 for (i
= 0; i
< 16; i
++)
763 printf("%02x%s", id
.bytes
[i
], i
!= 15 ? "," : "");
764 fputs(")\n\n", stdout
);
766 printf("As Python constant:\n"
768 ">>> MESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR
"')\n",
769 SD_ID128_FORMAT_VAL(id
));
774 static int add_matches(sd_journal
*j
, char **args
) {
776 bool have_term
= false;
780 STRV_FOREACH(i
, args
) {
783 if (streq(*i
, "+")) {
786 r
= sd_journal_add_disjunction(j
);
789 } else if (path_is_absolute(*i
)) {
790 _cleanup_free_
char *p
, *t
= NULL
, *t2
= NULL
;
792 _cleanup_free_
char *interpreter
= NULL
;
795 p
= canonicalize_file_name(*i
);
798 if (lstat(path
, &st
) < 0)
799 return log_error_errno(errno
, "Couldn't stat file: %m");
801 if (S_ISREG(st
.st_mode
) && (0111 & st
.st_mode
)) {
802 if (executable_is_script(path
, &interpreter
) > 0) {
803 _cleanup_free_
char *comm
;
805 comm
= strndup(basename(path
), 15);
809 t
= strappend("_COMM=", comm
);
811 /* Append _EXE only if the interpreter is not a link.
812 Otherwise, it might be outdated often. */
813 if (lstat(interpreter
, &st
) == 0 &&
814 !S_ISLNK(st
.st_mode
)) {
815 t2
= strappend("_EXE=", interpreter
);
820 t
= strappend("_EXE=", path
);
821 } else if (S_ISCHR(st
.st_mode
))
822 (void) asprintf(&t
, "_KERNEL_DEVICE=c%u:%u", major(st
.st_rdev
), minor(st
.st_rdev
));
823 else if (S_ISBLK(st
.st_mode
))
824 (void) asprintf(&t
, "_KERNEL_DEVICE=b%u:%u", major(st
.st_rdev
), minor(st
.st_rdev
));
826 log_error("File is neither a device node, nor regular file, nor executable: %s", *i
);
833 r
= sd_journal_add_match(j
, t
, 0);
835 r
= sd_journal_add_match(j
, t2
, 0);
839 r
= sd_journal_add_match(j
, *i
, 0);
844 return log_error_errno(r
, "Failed to add match '%s': %m", *i
);
847 if (!strv_isempty(args
) && !have_term
) {
848 log_error("\"+\" can only be used between terms");
855 static void boot_id_free_all(BootId
*l
) {
859 LIST_REMOVE(boot_list
, l
, i
);
864 static int discover_next_boot(
868 bool read_realtime
) {
871 char match
[9+32+1] = "_BOOT_ID=";
872 _cleanup_free_ BootId
*next_boot
= NULL
;
877 /* We expect the journal to be on the last position of a boot
878 * (in relation to the direction we are going), so that the next
879 * invocation of sd_journal_next/previous will be from a different
880 * boot. We then collect any information we desire and then jump
881 * to the last location of the new boot by using a _BOOT_ID match
882 * coming from the other journal direction. */
884 /* Make sure we aren't restricted by any _BOOT_ID matches, so that
885 * we can actually advance to a *different* boot. */
886 sd_journal_flush_matches(j
);
889 r
= sd_journal_previous(j
);
891 r
= sd_journal_next(j
);
895 return 0; /* End of journal, yay. */
897 next_boot
= new0(BootId
, 1);
901 r
= sd_journal_get_monotonic_usec(j
, NULL
, &next_boot
->id
);
906 r
= sd_journal_get_realtime_usec(j
, &next_boot
->first
);
911 /* Now seek to the last occurrence of this boot ID. */
912 sd_id128_to_string(next_boot
->id
, match
+ 9);
913 r
= sd_journal_add_match(j
, match
, sizeof(match
) - 1);
918 r
= sd_journal_seek_head(j
);
920 r
= sd_journal_seek_tail(j
);
925 r
= sd_journal_next(j
);
927 r
= sd_journal_previous(j
);
931 return -ENODATA
; /* This shouldn't happen. We just came from this very boot ID. */
934 r
= sd_journal_get_realtime_usec(j
, &next_boot
->last
);
945 static int get_boots(
948 BootId
*query_ref_boot
,
949 int ref_boot_offset
) {
953 BootId
*head
= NULL
, *tail
= NULL
;
954 const bool advance_older
= query_ref_boot
&& ref_boot_offset
<= 0;
958 /* Adjust for the asymmetry that offset 0 is
959 * the last (and current) boot, while 1 is considered the
960 * (chronological) first boot in the journal. */
961 skip_once
= query_ref_boot
&& sd_id128_is_null(query_ref_boot
->id
) && ref_boot_offset
< 0;
963 /* Advance to the earliest/latest occurrence of our reference
964 * boot ID (taking our lookup direction into account), so that
965 * discover_next_boot() can do its job.
966 * If no reference is given, the journal head/tail will do,
967 * they're "virtual" boots after all. */
968 if (query_ref_boot
&& !sd_id128_is_null(query_ref_boot
->id
)) {
969 char match
[9+32+1] = "_BOOT_ID=";
971 sd_journal_flush_matches(j
);
973 sd_id128_to_string(query_ref_boot
->id
, match
+ 9);
974 r
= sd_journal_add_match(j
, match
, sizeof(match
) - 1);
979 r
= sd_journal_seek_head(j
);
981 r
= sd_journal_seek_tail(j
);
986 r
= sd_journal_next(j
);
988 r
= sd_journal_previous(j
);
993 else if (ref_boot_offset
== 0) {
999 r
= sd_journal_seek_tail(j
);
1001 r
= sd_journal_seek_head(j
);
1005 /* No sd_journal_next/previous here. */
1009 _cleanup_free_ BootId
*current
= NULL
;
1011 r
= discover_next_boot(j
, ¤t
, advance_older
, !query_ref_boot
);
1013 boot_id_free_all(head
);
1020 if (query_ref_boot
) {
1022 ref_boot_offset
+= advance_older
? 1 : -1;
1025 if (ref_boot_offset
== 0) {
1027 query_ref_boot
->id
= current
->id
;
1031 LIST_INSERT_AFTER(boot_list
, head
, tail
, current
);
1042 sd_journal_flush_matches(j
);
1047 static int list_boots(sd_journal
*j
) {
1049 BootId
*id
, *all_ids
;
1053 count
= get_boots(j
, &all_ids
, NULL
, 0);
1055 return log_error_errno(count
, "Failed to determine boots: %m");
1059 pager_open_if_enabled();
1061 /* numbers are one less, but we need an extra char for the sign */
1062 w
= DECIMAL_STR_WIDTH(count
- 1) + 1;
1065 LIST_FOREACH(boot_list
, id
, all_ids
) {
1066 char a
[FORMAT_TIMESTAMP_MAX
], b
[FORMAT_TIMESTAMP_MAX
];
1068 printf("% *i " SD_ID128_FORMAT_STR
" %s—%s\n",
1070 SD_ID128_FORMAT_VAL(id
->id
),
1071 format_timestamp_maybe_utc(a
, sizeof(a
), id
->first
),
1072 format_timestamp_maybe_utc(b
, sizeof(b
), id
->last
));
1076 boot_id_free_all(all_ids
);
1081 static int add_boot(sd_journal
*j
) {
1082 char match
[9+32+1] = "_BOOT_ID=";
1084 BootId ref_boot_id
= {};
1091 if (arg_boot_offset
== 0 && sd_id128_equal(arg_boot_id
, SD_ID128_NULL
))
1092 return add_match_this_boot(j
, arg_machine
);
1094 ref_boot_id
.id
= arg_boot_id
;
1095 r
= get_boots(j
, NULL
, &ref_boot_id
, arg_boot_offset
);
1098 const char *reason
= (r
== 0) ? "No such boot ID in journal" : strerror(-r
);
1100 if (sd_id128_is_null(arg_boot_id
))
1101 log_error("Failed to look up boot %+i: %s", arg_boot_offset
, reason
);
1103 log_error("Failed to look up boot ID "SD_ID128_FORMAT_STR
"%+i: %s",
1104 SD_ID128_FORMAT_VAL(arg_boot_id
), arg_boot_offset
, reason
);
1106 return r
== 0 ? -ENODATA
: r
;
1109 sd_id128_to_string(ref_boot_id
.id
, match
+ 9);
1111 r
= sd_journal_add_match(j
, match
, sizeof(match
) - 1);
1113 return log_error_errno(r
, "Failed to add match: %m");
1115 r
= sd_journal_add_conjunction(j
);
1117 return log_error_errno(r
, "Failed to add conjunction: %m");
1122 static int add_dmesg(sd_journal
*j
) {
1129 r
= sd_journal_add_match(j
, "_TRANSPORT=kernel", strlen("_TRANSPORT=kernel"));
1131 return log_error_errno(r
, "Failed to add match: %m");
1133 r
= sd_journal_add_conjunction(j
);
1135 return log_error_errno(r
, "Failed to add conjunction: %m");
1140 static int get_possible_units(
1146 _cleanup_set_free_free_ Set
*found
;
1150 found
= set_new(&string_hash_ops
);
1154 NULSTR_FOREACH(field
, fields
) {
1158 r
= sd_journal_query_unique(j
, field
);
1162 SD_JOURNAL_FOREACH_UNIQUE(j
, data
, size
) {
1163 char **pattern
, *eq
;
1165 _cleanup_free_
char *u
= NULL
;
1167 eq
= memchr(data
, '=', size
);
1169 prefix
= eq
- (char*) data
+ 1;
1173 u
= strndup((char*) data
+ prefix
, size
- prefix
);
1177 STRV_FOREACH(pattern
, patterns
)
1178 if (fnmatch(*pattern
, u
, FNM_NOESCAPE
) == 0) {
1179 log_debug("Matched %s with pattern %s=%s", u
, field
, *pattern
);
1181 r
= set_consume(found
, u
);
1183 if (r
< 0 && r
!= -EEXIST
)
1196 /* This list is supposed to return the superset of unit names
1197 * possibly matched by rules added with add_matches_for_unit... */
1198 #define SYSTEM_UNITS \
1202 "OBJECT_SYSTEMD_UNIT\0" \
1205 /* ... and add_matches_for_user_unit */
1206 #define USER_UNITS \
1207 "_SYSTEMD_USER_UNIT\0" \
1209 "COREDUMP_USER_UNIT\0" \
1210 "OBJECT_SYSTEMD_USER_UNIT\0"
1212 static int add_units(sd_journal
*j
) {
1213 _cleanup_strv_free_
char **patterns
= NULL
;
1219 STRV_FOREACH(i
, arg_system_units
) {
1220 _cleanup_free_
char *u
= NULL
;
1222 r
= unit_name_mangle(*i
, UNIT_NAME_GLOB
, &u
);
1226 if (string_is_glob(u
)) {
1227 r
= strv_push(&patterns
, u
);
1232 r
= add_matches_for_unit(j
, u
);
1235 r
= sd_journal_add_disjunction(j
);
1242 if (!strv_isempty(patterns
)) {
1243 _cleanup_set_free_free_ Set
*units
= NULL
;
1247 r
= get_possible_units(j
, SYSTEM_UNITS
, patterns
, &units
);
1251 SET_FOREACH(u
, units
, it
) {
1252 r
= add_matches_for_unit(j
, u
);
1255 r
= sd_journal_add_disjunction(j
);
1262 patterns
= strv_free(patterns
);
1264 STRV_FOREACH(i
, arg_user_units
) {
1265 _cleanup_free_
char *u
= NULL
;
1267 r
= unit_name_mangle(*i
, UNIT_NAME_GLOB
, &u
);
1271 if (string_is_glob(u
)) {
1272 r
= strv_push(&patterns
, u
);
1277 r
= add_matches_for_user_unit(j
, u
, getuid());
1280 r
= sd_journal_add_disjunction(j
);
1287 if (!strv_isempty(patterns
)) {
1288 _cleanup_set_free_free_ Set
*units
= NULL
;
1292 r
= get_possible_units(j
, USER_UNITS
, patterns
, &units
);
1296 SET_FOREACH(u
, units
, it
) {
1297 r
= add_matches_for_user_unit(j
, u
, getuid());
1300 r
= sd_journal_add_disjunction(j
);
1307 /* Complain if the user request matches but nothing whatsoever was
1308 * found, since otherwise everything would be matched. */
1309 if (!(strv_isempty(arg_system_units
) && strv_isempty(arg_user_units
)) && count
== 0)
1312 r
= sd_journal_add_conjunction(j
);
1319 static int add_priorities(sd_journal
*j
) {
1320 char match
[] = "PRIORITY=0";
1324 if (arg_priorities
== 0xFF)
1327 for (i
= LOG_EMERG
; i
<= LOG_DEBUG
; i
++)
1328 if (arg_priorities
& (1 << i
)) {
1329 match
[sizeof(match
)-2] = '0' + i
;
1331 r
= sd_journal_add_match(j
, match
, strlen(match
));
1333 return log_error_errno(r
, "Failed to add match: %m");
1336 r
= sd_journal_add_conjunction(j
);
1338 return log_error_errno(r
, "Failed to add conjunction: %m");
1344 static int add_syslog_identifier(sd_journal
*j
) {
1350 STRV_FOREACH(i
, arg_syslog_identifier
) {
1353 u
= strjoina("SYSLOG_IDENTIFIER=", *i
);
1354 r
= sd_journal_add_match(j
, u
, 0);
1357 r
= sd_journal_add_disjunction(j
);
1362 r
= sd_journal_add_conjunction(j
);
1369 static int setup_keys(void) {
1371 size_t mpk_size
, seed_size
, state_size
, i
;
1372 uint8_t *mpk
, *seed
, *state
;
1374 sd_id128_t machine
, boot
;
1375 char *p
= NULL
, *k
= NULL
;
1380 r
= stat("/var/log/journal", &st
);
1381 if (r
< 0 && errno
!= ENOENT
&& errno
!= ENOTDIR
)
1382 return log_error_errno(errno
, "stat(\"%s\") failed: %m", "/var/log/journal");
1384 if (r
< 0 || !S_ISDIR(st
.st_mode
)) {
1385 log_error("%s is not a directory, must be using persistent logging for FSS.",
1386 "/var/log/journal");
1387 return r
< 0 ? -errno
: -ENOTDIR
;
1390 r
= sd_id128_get_machine(&machine
);
1392 return log_error_errno(r
, "Failed to get machine ID: %m");
1394 r
= sd_id128_get_boot(&boot
);
1396 return log_error_errno(r
, "Failed to get boot ID: %m");
1398 if (asprintf(&p
, "/var/log/journal/" SD_ID128_FORMAT_STR
"/fss",
1399 SD_ID128_FORMAT_VAL(machine
)) < 0)
1404 if (r
< 0 && errno
!= ENOENT
) {
1405 r
= log_error_errno(errno
, "unlink(\"%s\") failed: %m", p
);
1408 } else if (access(p
, F_OK
) >= 0) {
1409 log_error("Sealing key file %s exists already. Use --force to recreate.", p
);
1414 if (asprintf(&k
, "/var/log/journal/" SD_ID128_FORMAT_STR
"/fss.tmp.XXXXXX",
1415 SD_ID128_FORMAT_VAL(machine
)) < 0) {
1420 mpk_size
= FSPRG_mskinbytes(FSPRG_RECOMMENDED_SECPAR
);
1421 mpk
= alloca(mpk_size
);
1423 seed_size
= FSPRG_RECOMMENDED_SEEDLEN
;
1424 seed
= alloca(seed_size
);
1426 state_size
= FSPRG_stateinbytes(FSPRG_RECOMMENDED_SECPAR
);
1427 state
= alloca(state_size
);
1429 fd
= open("/dev/random", O_RDONLY
|O_CLOEXEC
|O_NOCTTY
);
1431 r
= log_error_errno(errno
, "Failed to open /dev/random: %m");
1435 log_info("Generating seed...");
1436 r
= loop_read_exact(fd
, seed
, seed_size
, true);
1438 log_error_errno(r
, "Failed to read random seed: %m");
1442 log_info("Generating key pair...");
1443 FSPRG_GenMK(NULL
, mpk
, seed
, seed_size
, FSPRG_RECOMMENDED_SECPAR
);
1445 log_info("Generating sealing key...");
1446 FSPRG_GenState0(state
, mpk
, seed
, seed_size
);
1448 assert(arg_interval
> 0);
1450 n
= now(CLOCK_REALTIME
);
1454 fd
= mkostemp_safe(k
, O_WRONLY
|O_CLOEXEC
);
1456 r
= log_error_errno(errno
, "Failed to open %s: %m", k
);
1460 /* Enable secure remove, exclusion from dump, synchronous
1461 * writing and in-place updating */
1462 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
);
1464 log_warning_errno(errno
, "Failed to set file attributes: %m");
1467 memcpy(h
.signature
, "KSHHRHLP", 8);
1468 h
.machine_id
= machine
;
1470 h
.header_size
= htole64(sizeof(h
));
1471 h
.start_usec
= htole64(n
* arg_interval
);
1472 h
.interval_usec
= htole64(arg_interval
);
1473 h
.fsprg_secpar
= htole16(FSPRG_RECOMMENDED_SECPAR
);
1474 h
.fsprg_state_size
= htole64(state_size
);
1476 r
= loop_write(fd
, &h
, sizeof(h
), false);
1478 log_error_errno(r
, "Failed to write header: %m");
1482 r
= loop_write(fd
, state
, state_size
, false);
1484 log_error_errno(r
, "Failed to write state: %m");
1488 if (link(k
, p
) < 0) {
1489 r
= log_error_errno(errno
, "Failed to link file: %m");
1496 "The new key pair has been generated. The " ANSI_HIGHLIGHT_ON
"secret sealing key" ANSI_HIGHLIGHT_OFF
" has been written to\n"
1497 "the following local file. This key file is automatically updated when the\n"
1498 "sealing key is advanced. It should not be used on multiple hosts.\n"
1502 "Please write down the following " ANSI_HIGHLIGHT_ON
"secret verification key" ANSI_HIGHLIGHT_OFF
". It should be stored\n"
1503 "at a safe location and should not be saved locally on disk.\n"
1504 "\n\t" ANSI_HIGHLIGHT_RED_ON
, p
);
1507 for (i
= 0; i
< seed_size
; i
++) {
1508 if (i
> 0 && i
% 3 == 0)
1510 printf("%02x", ((uint8_t*) seed
)[i
]);
1513 printf("/%llx-%llx\n", (unsigned long long) n
, (unsigned long long) arg_interval
);
1516 char tsb
[FORMAT_TIMESPAN_MAX
], *hn
;
1519 ANSI_HIGHLIGHT_OFF
"\n"
1520 "The sealing key is automatically changed every %s.\n",
1521 format_timespan(tsb
, sizeof(tsb
), arg_interval
, 0));
1523 hn
= gethostname_malloc();
1526 hostname_cleanup(hn
);
1527 fprintf(stderr
, "\nThe keys have been generated for host %s/" SD_ID128_FORMAT_STR
".\n", hn
, SD_ID128_FORMAT_VAL(machine
));
1529 fprintf(stderr
, "\nThe keys have been generated for host " SD_ID128_FORMAT_STR
".\n", SD_ID128_FORMAT_VAL(machine
));
1531 #ifdef HAVE_QRENCODE
1532 /* If this is not an UTF-8 system don't print any QR codes */
1533 if (is_locale_utf8()) {
1534 fputs("\nTo transfer the verification key to your phone please scan the QR code below:\n\n", stderr
);
1535 print_qr_code(stderr
, seed
, seed_size
, n
, arg_interval
, hn
, machine
);
1555 log_error("Forward-secure sealing not available.");
1560 static int verify(sd_journal
*j
) {
1567 log_show_color(true);
1569 ORDERED_HASHMAP_FOREACH(f
, j
->files
, i
) {
1571 usec_t first
= 0, validated
= 0, last
= 0;
1574 if (!arg_verify_key
&& JOURNAL_HEADER_SEALED(f
->header
))
1575 log_notice("Journal file %s has sealing enabled but verification key has not been passed using --verify-key=.", f
->path
);
1578 k
= journal_file_verify(f
, arg_verify_key
, &first
, &validated
, &last
, true);
1580 /* If the key was invalid give up right-away. */
1583 log_warning("FAIL: %s (%s)", f
->path
, strerror(-k
));
1586 char a
[FORMAT_TIMESTAMP_MAX
], b
[FORMAT_TIMESTAMP_MAX
], c
[FORMAT_TIMESPAN_MAX
];
1587 log_info("PASS: %s", f
->path
);
1589 if (arg_verify_key
&& JOURNAL_HEADER_SEALED(f
->header
)) {
1590 if (validated
> 0) {
1591 log_info("=> Validated from %s to %s, final %s entries not sealed.",
1592 format_timestamp_maybe_utc(a
, sizeof(a
), first
),
1593 format_timestamp_maybe_utc(b
, sizeof(b
), validated
),
1594 format_timespan(c
, sizeof(c
), last
> validated
? last
- validated
: 0, 0));
1595 } else if (last
> 0)
1596 log_info("=> No sealing yet, %s of entries not sealed.",
1597 format_timespan(c
, sizeof(c
), last
- first
, 0));
1599 log_info("=> No sealing yet, no entries in file.");
1607 static int access_check_var_log_journal(sd_journal
*j
) {
1609 _cleanup_strv_free_
char **g
= NULL
;
1619 /* If we are root, we should have access, don't warn. */
1623 /* If we are in the 'systemd-journal' group, we should have
1625 r
= in_group("systemd-journal");
1627 return log_error_errno(r
, "Failed to check if we are in the 'systemd-journal' group: %m");
1632 if (laccess("/run/log/journal", F_OK
) >= 0)
1633 dir
= "/run/log/journal";
1635 dir
= "/var/log/journal";
1637 /* If we are in any of the groups listed in the journal ACLs,
1638 * then all is good, too. Let's enumerate all groups from the
1639 * default ACL of the directory, which generally should allow
1640 * access to most journal files too. */
1641 r
= acl_search_groups(dir
, &g
);
1643 return log_error_errno(r
, "Failed to search journal ACL: %m");
1647 /* Print a pretty list, if there were ACLs set. */
1648 if (!strv_isempty(g
)) {
1649 _cleanup_free_
char *s
= NULL
;
1651 /* Thre are groups in the ACL, let's list them */
1652 r
= strv_extend(&g
, "systemd-journal");
1659 s
= strv_join(g
, "', '");
1663 log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
1664 " Users in groups '%s' can see all messages.\n"
1665 " Pass -q to turn off this notice.", s
);
1670 /* If no ACLs were found, print a short version of the message. */
1671 log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
1672 " Users in the 'systemd-journal' group can see all messages. Pass -q to\n"
1673 " turn off this notice.");
1678 static int access_check(sd_journal
*j
) {
1685 if (set_isempty(j
->errors
)) {
1686 if (ordered_hashmap_isempty(j
->files
))
1687 log_notice("No journal files were found.");
1692 if (set_contains(j
->errors
, INT_TO_PTR(-EACCES
))) {
1693 (void) access_check_var_log_journal(j
);
1695 if (ordered_hashmap_isempty(j
->files
))
1696 r
= log_error_errno(EACCES
, "No journal files were opened due to insufficient permissions.");
1699 SET_FOREACH(code
, j
->errors
, it
) {
1702 err
= -PTR_TO_INT(code
);
1708 log_warning_errno(err
, "Error was encountered while opening journal files: %m");
1716 static int flush_to_var(void) {
1717 _cleanup_bus_error_free_ sd_bus_error error
= SD_BUS_ERROR_NULL
;
1718 _cleanup_bus_flush_close_unref_ sd_bus
*bus
= NULL
;
1719 _cleanup_close_
int watch_fd
= -1;
1723 if (access("/run/systemd/journal/flushed", F_OK
) >= 0)
1726 /* OK, let's actually do the full logic, send SIGUSR1 to the
1727 * daemon and set up inotify to wait for the flushed file to appear */
1728 r
= bus_open_system_systemd(&bus
);
1730 return log_error_errno(r
, "Failed to get D-Bus connection: %m");
1732 r
= sd_bus_call_method(
1734 "org.freedesktop.systemd1",
1735 "/org/freedesktop/systemd1",
1736 "org.freedesktop.systemd1.Manager",
1740 "ssi", "systemd-journald.service", "main", SIGUSR1
);
1742 log_error("Failed to kill journal service: %s", bus_error_message(&error
, r
));
1746 mkdir_p("/run/systemd/journal", 0755);
1748 watch_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
1750 return log_error_errno(errno
, "Failed to create inotify watch: %m");
1752 r
= inotify_add_watch(watch_fd
, "/run/systemd/journal", IN_CREATE
|IN_DONT_FOLLOW
|IN_ONLYDIR
);
1754 return log_error_errno(errno
, "Failed to watch journal directory: %m");
1757 if (access("/run/systemd/journal/flushed", F_OK
) >= 0)
1760 if (errno
!= ENOENT
)
1761 return log_error_errno(errno
, "Failed to check for existence of /run/systemd/journal/flushed: %m");
1763 r
= fd_wait_for_event(watch_fd
, POLLIN
, USEC_INFINITY
);
1765 return log_error_errno(r
, "Failed to wait for event: %m");
1767 r
= flush_fd(watch_fd
);
1769 return log_error_errno(r
, "Failed to flush inotify events: %m");
1775 int main(int argc
, char *argv
[]) {
1777 _cleanup_journal_close_ sd_journal
*j
= NULL
;
1778 bool need_seek
= false;
1779 sd_id128_t previous_boot_id
;
1780 bool previous_boot_id_valid
= false, first_line
= true;
1782 bool ellipsized
= false;
1784 setlocale(LC_ALL
, "");
1785 log_parse_environment();
1788 r
= parse_argv(argc
, argv
);
1792 signal(SIGWINCH
, columns_lines_cache_reset
);
1795 /* Increase max number of open files to 16K if we can, we
1796 * might needs this when browsing journal files, which might
1797 * be split up into many files. */
1798 setrlimit_closest(RLIMIT_NOFILE
, &RLIMIT_MAKE_CONST(16384));
1800 if (arg_action
== ACTION_NEW_ID128
) {
1801 r
= generate_new_id128();
1805 if (arg_action
== ACTION_FLUSH
) {
1810 if (arg_action
== ACTION_SETUP_KEYS
) {
1815 if (arg_action
== ACTION_UPDATE_CATALOG
||
1816 arg_action
== ACTION_LIST_CATALOG
||
1817 arg_action
== ACTION_DUMP_CATALOG
) {
1819 _cleanup_free_
char *database
;
1821 database
= path_join(arg_root
, CATALOG_DATABASE
, NULL
);
1827 if (arg_action
== ACTION_UPDATE_CATALOG
) {
1828 r
= catalog_update(database
, arg_root
, catalog_file_dirs
);
1830 log_error_errno(r
, "Failed to list catalog: %m");
1832 bool oneline
= arg_action
== ACTION_LIST_CATALOG
;
1835 r
= catalog_list_items(stdout
, database
,
1836 oneline
, argv
+ optind
);
1838 r
= catalog_list(stdout
, database
, oneline
);
1840 log_error_errno(r
, "Failed to list catalog: %m");
1847 r
= sd_journal_open_directory(&j
, arg_directory
, arg_journal_type
);
1849 r
= sd_journal_open_files(&j
, (const char**) arg_file
, 0);
1850 else if (arg_machine
)
1851 r
= sd_journal_open_container(&j
, arg_machine
, 0);
1853 r
= sd_journal_open(&j
, !arg_merge
*SD_JOURNAL_LOCAL_ONLY
+ arg_journal_type
);
1855 log_error_errno(r
, "Failed to open %s: %m",
1856 arg_directory
? arg_directory
: arg_file
? "files" : "journal");
1860 r
= access_check(j
);
1864 if (arg_action
== ACTION_VERIFY
) {
1869 if (arg_action
== ACTION_PRINT_HEADER
) {
1870 journal_print_header(j
);
1875 if (arg_action
== ACTION_DISK_USAGE
) {
1877 char sbytes
[FORMAT_BYTES_MAX
];
1879 r
= sd_journal_get_usage(j
, &bytes
);
1883 printf("Archived and active journals take up %s on disk.\n",
1884 format_bytes(sbytes
, sizeof(sbytes
), bytes
));
1888 if (arg_action
== ACTION_VACUUM
) {
1892 HASHMAP_FOREACH(d
, j
->directories_by_path
, i
) {
1898 q
= journal_directory_vacuum(d
->path
, arg_vacuum_size
, arg_vacuum_time
, NULL
, true);
1900 log_error_errno(q
, "Failed to vacuum: %m");
1908 if (arg_action
== ACTION_LIST_BOOTS
) {
1913 /* add_boot() must be called first!
1914 * It may need to seek the journal to find parent boot IDs. */
1925 log_error_errno(r
, "Failed to add filter for units: %m");
1929 r
= add_syslog_identifier(j
);
1931 log_error_errno(r
, "Failed to add filter for syslog identifiers: %m");
1935 r
= add_priorities(j
);
1939 r
= add_matches(j
, argv
+ optind
);
1943 if (_unlikely_(log_get_max_level() >= LOG_DEBUG
)) {
1944 _cleanup_free_
char *filter
;
1946 filter
= journal_make_match_string(j
);
1950 log_debug("Journal filter: %s", filter
);
1957 r
= sd_journal_set_data_threshold(j
, 0);
1959 log_error_errno(r
, "Failed to unset data size threshold: %m");
1963 r
= sd_journal_query_unique(j
, arg_field
);
1965 log_error_errno(r
, "Failed to query unique data objects: %m");
1969 SD_JOURNAL_FOREACH_UNIQUE(j
, data
, size
) {
1972 if (arg_lines
>= 0 && n_shown
>= arg_lines
)
1975 eq
= memchr(data
, '=', size
);
1977 printf("%.*s\n", (int) (size
- ((const uint8_t*) eq
- (const uint8_t*) data
+ 1)), (const char*) eq
+ 1);
1979 printf("%.*s\n", (int) size
, (const char*) data
);
1988 /* Opening the fd now means the first sd_journal_wait() will actually wait */
1990 r
= sd_journal_get_fd(j
);
1992 log_error_errno(r
, "Failed to get journal fd: %m");
1997 if (arg_cursor
|| arg_after_cursor
) {
1998 r
= sd_journal_seek_cursor(j
, arg_cursor
?: arg_after_cursor
);
2000 log_error_errno(r
, "Failed to seek to cursor: %m");
2005 r
= sd_journal_next_skip(j
, 1 + !!arg_after_cursor
);
2007 r
= sd_journal_previous_skip(j
, 1 + !!arg_after_cursor
);
2009 if (arg_after_cursor
&& r
< 2) {
2010 /* We couldn't find the next entry after the cursor. */
2017 } else if (arg_since_set
&& !arg_reverse
) {
2018 r
= sd_journal_seek_realtime_usec(j
, arg_since
);
2020 log_error_errno(r
, "Failed to seek to date: %m");
2023 r
= sd_journal_next(j
);
2025 } else if (arg_until_set
&& arg_reverse
) {
2026 r
= sd_journal_seek_realtime_usec(j
, arg_until
);
2028 log_error_errno(r
, "Failed to seek to date: %m");
2031 r
= sd_journal_previous(j
);
2033 } else if (arg_lines
>= 0) {
2034 r
= sd_journal_seek_tail(j
);
2036 log_error_errno(r
, "Failed to seek to tail: %m");
2040 r
= sd_journal_previous_skip(j
, arg_lines
);
2042 } else if (arg_reverse
) {
2043 r
= sd_journal_seek_tail(j
);
2045 log_error_errno(r
, "Failed to seek to tail: %m");
2049 r
= sd_journal_previous(j
);
2052 r
= sd_journal_seek_head(j
);
2054 log_error_errno(r
, "Failed to seek to head: %m");
2058 r
= sd_journal_next(j
);
2062 log_error_errno(r
, "Failed to iterate through journal: %m");
2069 printf("-- No entries --\n");
2075 pager_open_if_enabled();
2079 char start_buf
[FORMAT_TIMESTAMP_MAX
], end_buf
[FORMAT_TIMESTAMP_MAX
];
2081 r
= sd_journal_get_cutoff_realtime_usec(j
, &start
, &end
);
2083 log_error_errno(r
, "Failed to get cutoff: %m");
2089 printf("-- Logs begin at %s. --\n",
2090 format_timestamp_maybe_utc(start_buf
, sizeof(start_buf
), start
));
2092 printf("-- Logs begin at %s, end at %s. --\n",
2093 format_timestamp_maybe_utc(start_buf
, sizeof(start_buf
), start
),
2094 format_timestamp_maybe_utc(end_buf
, sizeof(end_buf
), end
));
2099 while (arg_lines
< 0 || n_shown
< arg_lines
|| (arg_follow
&& !first_line
)) {
2104 r
= sd_journal_next(j
);
2106 r
= sd_journal_previous(j
);
2108 log_error_errno(r
, "Failed to iterate through journal: %m");
2115 if (arg_until_set
&& !arg_reverse
) {
2118 r
= sd_journal_get_realtime_usec(j
, &usec
);
2120 log_error_errno(r
, "Failed to determine timestamp: %m");
2123 if (usec
> arg_until
)
2127 if (arg_since_set
&& arg_reverse
) {
2130 r
= sd_journal_get_realtime_usec(j
, &usec
);
2132 log_error_errno(r
, "Failed to determine timestamp: %m");
2135 if (usec
< arg_since
)
2139 if (!arg_merge
&& !arg_quiet
) {
2142 r
= sd_journal_get_monotonic_usec(j
, NULL
, &boot_id
);
2144 if (previous_boot_id_valid
&&
2145 !sd_id128_equal(boot_id
, previous_boot_id
))
2146 printf("%s-- Reboot --%s\n",
2147 ansi_highlight(), ansi_highlight_off());
2149 previous_boot_id
= boot_id
;
2150 previous_boot_id_valid
= true;
2155 arg_all
* OUTPUT_SHOW_ALL
|
2156 arg_full
* OUTPUT_FULL_WIDTH
|
2157 on_tty() * OUTPUT_COLOR
|
2158 arg_catalog
* OUTPUT_CATALOG
|
2159 arg_utc
* OUTPUT_UTC
;
2161 r
= output_journal(stdout
, j
, arg_output
, 0, flags
, &ellipsized
);
2163 if (r
== -EADDRNOTAVAIL
)
2165 else if (r
< 0 || ferror(stdout
))
2172 if (arg_show_cursor
) {
2173 _cleanup_free_
char *cursor
= NULL
;
2175 r
= sd_journal_get_cursor(j
, &cursor
);
2176 if (r
< 0 && r
!= -EADDRNOTAVAIL
)
2177 log_error_errno(r
, "Failed to get cursor: %m");
2179 printf("-- cursor: %s\n", cursor
);
2185 r
= sd_journal_wait(j
, (uint64_t) -1);
2187 log_error_errno(r
, "Couldn't wait for journal event: %m");
2197 strv_free(arg_file
);
2199 strv_free(arg_syslog_identifier
);
2200 strv_free(arg_system_units
);
2201 strv_free(arg_user_units
);
2203 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;