1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2012 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/>.
26 #include <sys/socket.h>
30 #include "logs-show.h"
36 #include "journal-internal.h"
38 /* up to three lines (each up to 100 characters),
39 or 300 characters, whichever is less */
40 #define PRINT_LINE_THRESHOLD 3
41 #define PRINT_CHAR_THRESHOLD 300
43 #define JSON_THRESHOLD 4096
45 static int print_catalog(FILE *f, sd_journal *j) {
47 _cleanup_free_ char *t = NULL, *z = NULL;
50 r = sd_journal_get_catalog(j, &t);
54 z = strreplace(strstrip(t), "\n", "\n-- ");
65 static int parse_field(const void *data, size_t length, const char *field, char **target, size_t *target_size) {
78 if (memcmp(data, field, fl))
86 memcpy(buf, (const char*) data + fl, nl);
96 static bool shall_print(const char *p, size_t l, OutputFlags flags) {
99 if (flags & OUTPUT_SHOW_ALL)
102 if (l >= PRINT_CHAR_THRESHOLD)
105 if (!utf8_is_printable(p, l))
111 static bool print_multiline(FILE *f, unsigned prefix, unsigned n_columns, OutputFlags flags, int priority, const char* message, size_t message_len) {
112 const char *color_on = "", *color_off = "";
113 const char *pos, *end;
114 bool ellipsized = false;
117 if (flags & OUTPUT_COLOR) {
118 if (priority <= LOG_ERR) {
119 color_on = ANSI_HIGHLIGHT_RED_ON;
120 color_off = ANSI_HIGHLIGHT_OFF;
121 } else if (priority <= LOG_NOTICE) {
122 color_on = ANSI_HIGHLIGHT_ON;
123 color_off = ANSI_HIGHLIGHT_OFF;
127 /* A special case: make sure that we print a newline when
128 the message is empty. */
129 if (message_len == 0)
133 pos < message + message_len;
134 pos = end + 1, line++) {
135 bool continuation = line > 0;
138 for (end = pos; end < message + message_len && *end != '\n'; end++)
143 /* We need to figure out when we are showing not-last line, *and*
144 * will skip subsequent lines. In that case, we will put the dots
145 * at the end of the line, instead of putting dots in the middle
149 line + 1 == PRINT_LINE_THRESHOLD ||
150 end + 1 >= message + PRINT_CHAR_THRESHOLD;
152 if (flags & (OUTPUT_FULL_WIDTH | OUTPUT_SHOW_ALL) ||
153 (prefix + len + 1 < n_columns && !tail_line)) {
154 fprintf(f, "%*s%s%.*s%s\n",
155 continuation * prefix, "",
156 color_on, len, pos, color_off);
160 /* Beyond this point, ellipsization will happen. */
163 if (prefix < n_columns && n_columns - prefix >= 3) {
164 if (n_columns - prefix > (unsigned) len + 3)
165 fprintf(f, "%*s%s%.*s...%s\n",
166 continuation * prefix, "",
167 color_on, len, pos, color_off);
169 _cleanup_free_ char *e;
171 e = ellipsize_mem(pos, len, n_columns - prefix,
172 tail_line ? 100 : 90);
174 fprintf(f, "%*s%s%.*s%s\n",
175 continuation * prefix, "",
176 color_on, len, pos, color_off);
178 fprintf(f, "%*s%s%s%s\n",
179 continuation * prefix, "",
180 color_on, e, color_off);
192 static int output_short(
203 _cleanup_free_ char *hostname = NULL, *identifier = NULL, *comm = NULL, *pid = NULL, *fake_pid = NULL, *message = NULL, *realtime = NULL, *monotonic = NULL, *priority = NULL;
204 size_t hostname_len = 0, identifier_len = 0, comm_len = 0, pid_len = 0, fake_pid_len = 0, message_len = 0, realtime_len = 0, monotonic_len = 0, priority_len = 0;
206 bool ellipsized = false;
211 /* Set the threshold to one bigger than the actual print
212 * threshold, so that if the line is actually longer than what
213 * we're willing to print, ellipsization will occur. This way
214 * we won't output a misleading line without any indication of
217 sd_journal_set_data_threshold(j, flags & (OUTPUT_SHOW_ALL|OUTPUT_FULL_WIDTH) ? 0 : PRINT_CHAR_THRESHOLD + 1);
219 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
221 r = parse_field(data, length, "PRIORITY=", &priority, &priority_len);
227 r = parse_field(data, length, "_HOSTNAME=", &hostname, &hostname_len);
233 r = parse_field(data, length, "SYSLOG_IDENTIFIER=", &identifier, &identifier_len);
239 r = parse_field(data, length, "_COMM=", &comm, &comm_len);
245 r = parse_field(data, length, "_PID=", &pid, &pid_len);
251 r = parse_field(data, length, "SYSLOG_PID=", &fake_pid, &fake_pid_len);
257 r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=", &realtime, &realtime_len);
263 r = parse_field(data, length, "_SOURCE_MONOTONIC_TIMESTAMP=", &monotonic, &monotonic_len);
269 r = parse_field(data, length, "MESSAGE=", &message, &message_len);
280 if (!(flags & OUTPUT_SHOW_ALL))
281 strip_tab_ansi(&message, &message_len);
283 if (priority_len == 1 && *priority >= '0' && *priority <= '7')
286 if (mode == OUTPUT_SHORT_MONOTONIC) {
293 r = safe_atou64(monotonic, &t);
296 r = sd_journal_get_monotonic_usec(j, &t, &boot_id);
299 log_error("Failed to get monotonic timestamp: %s", strerror(-r));
303 fprintf(f, "[%5llu.%06llu]",
307 n += 1 + 5 + 1 + 6 + 1;
318 r = safe_atou64(realtime, &x);
321 r = sd_journal_get_realtime_usec(j, &x);
324 log_error("Failed to get realtime timestamp: %s", strerror(-r));
328 t = (time_t) (x / USEC_PER_SEC);
331 case OUTPUT_SHORT_ISO:
332 r = strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S%z", localtime_r(&t, &tm));
334 case OUTPUT_SHORT_PRECISE:
335 r = strftime(buf, sizeof(buf), "%b %d %H:%M:%S", localtime_r(&t, &tm));
337 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
338 ".%06llu", x % USEC_PER_SEC);
342 r = strftime(buf, sizeof(buf), "%b %d %H:%M:%S", localtime_r(&t, &tm));
346 log_error("Failed to format time.");
354 if (hostname && shall_print(hostname, hostname_len, flags)) {
355 fprintf(f, " %.*s", (int) hostname_len, hostname);
356 n += hostname_len + 1;
359 if (identifier && shall_print(identifier, identifier_len, flags)) {
360 fprintf(f, " %.*s", (int) identifier_len, identifier);
361 n += identifier_len + 1;
362 } else if (comm && shall_print(comm, comm_len, flags)) {
363 fprintf(f, " %.*s", (int) comm_len, comm);
368 if (pid && shall_print(pid, pid_len, flags)) {
369 fprintf(f, "[%.*s]", (int) pid_len, pid);
371 } else if (fake_pid && shall_print(fake_pid, fake_pid_len, flags)) {
372 fprintf(f, "[%.*s]", (int) fake_pid_len, fake_pid);
373 n += fake_pid_len + 2;
376 if (!(flags & OUTPUT_SHOW_ALL) && !utf8_is_printable(message, message_len)) {
377 char bytes[FORMAT_BYTES_MAX];
378 fprintf(f, ": [%s blob data]\n", format_bytes(bytes, sizeof(bytes), message_len));
382 print_multiline(f, n + 2, n_columns, flags, p, message, message_len);
385 if (flags & OUTPUT_CATALOG)
391 static int output_verbose(
400 _cleanup_free_ char *cursor = NULL;
402 char ts[FORMAT_TIMESTAMP_MAX + 7];
408 sd_journal_set_data_threshold(j, 0);
410 r = sd_journal_get_data(j, "_SOURCE_REALTIME_TIMESTAMP", &data, &length);
412 log_debug("Source realtime timestamp not found");
414 log_full(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR,
415 "Failed to get source realtime timestamp: %s", strerror(-r));
418 _cleanup_free_ char *value = NULL;
421 r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=", &value, &size);
423 log_debug("_SOURCE_REALTIME_TIMESTAMP invalid: %s", strerror(-r));
425 r = safe_atou64(value, &realtime);
427 log_debug("Failed to parse realtime timestamp: %s",
433 r = sd_journal_get_realtime_usec(j, &realtime);
435 log_full(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR,
436 "Failed to get realtime timestamp: %s", strerror(-r));
441 r = sd_journal_get_cursor(j, &cursor);
443 log_error("Failed to get cursor: %s", strerror(-r));
447 fprintf(f, "%s [%s]\n",
448 format_timestamp_us(ts, sizeof(ts), realtime),
451 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
454 const char *on = "", *off = "";
456 c = memchr(data, '=', length);
458 log_error("Invalid field.");
461 fieldlen = c - (const char*) data;
463 if (flags & OUTPUT_COLOR && startswith(data, "MESSAGE=")) {
464 on = ANSI_HIGHLIGHT_ON;
465 off = ANSI_HIGHLIGHT_OFF;
468 if (flags & OUTPUT_SHOW_ALL ||
469 (((length < PRINT_CHAR_THRESHOLD) || flags & OUTPUT_FULL_WIDTH)
470 && utf8_is_printable(data, length))) {
471 fprintf(f, " %s%.*s=", on, fieldlen, (const char*)data);
472 print_multiline(f, 4 + fieldlen + 1, 0, OUTPUT_FULL_WIDTH, 0, c + 1, length - fieldlen - 1);
475 char bytes[FORMAT_BYTES_MAX];
477 fprintf(f, " %s%.*s=[%s blob data]%s\n",
479 (int) (c - (const char*) data),
481 format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1),
489 if (flags & OUTPUT_CATALOG)
495 static int output_export(
505 usec_t realtime, monotonic;
506 _cleanup_free_ char *cursor = NULL;
512 sd_journal_set_data_threshold(j, 0);
514 r = sd_journal_get_realtime_usec(j, &realtime);
516 log_error("Failed to get realtime timestamp: %s", strerror(-r));
520 r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
522 log_error("Failed to get monotonic timestamp: %s", strerror(-r));
526 r = sd_journal_get_cursor(j, &cursor);
528 log_error("Failed to get cursor: %s", strerror(-r));
534 "__REALTIME_TIMESTAMP="USEC_FMT"\n"
535 "__MONOTONIC_TIMESTAMP="USEC_FMT"\n"
540 sd_id128_to_string(boot_id, sid));
542 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
544 /* We already printed the boot id, from the data in
545 * the header, hence let's suppress it here */
547 startswith(data, "_BOOT_ID="))
550 if (utf8_is_printable_newline(data, length, false))
551 fwrite(data, length, 1, f);
556 c = memchr(data, '=', length);
558 log_error("Invalid field.");
562 fwrite(data, c - (const char*) data, 1, f);
564 le64 = htole64(length - (c - (const char*) data) - 1);
565 fwrite(&le64, sizeof(le64), 1, f);
566 fwrite(c + 1, length - (c - (const char*) data) - 1, 1, f);
589 if (!(flags & OUTPUT_SHOW_ALL) && l >= JSON_THRESHOLD)
593 else if (!utf8_is_printable(p, l)) {
594 bool not_first = false;
600 fprintf(f, ", %u", (uint8_t) *p);
603 fprintf(f, "%u", (uint8_t) *p);
615 if (*p == '"' || *p == '\\') {
618 } else if (*p == '\n')
621 fprintf(f, "\\u%04x", *p);
633 static int output_json(
640 uint64_t realtime, monotonic;
641 _cleanup_free_ char *cursor = NULL;
648 bool done, separator;
652 sd_journal_set_data_threshold(j, flags & OUTPUT_SHOW_ALL ? 0 : JSON_THRESHOLD);
654 r = sd_journal_get_realtime_usec(j, &realtime);
656 log_error("Failed to get realtime timestamp: %s", strerror(-r));
660 r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
662 log_error("Failed to get monotonic timestamp: %s", strerror(-r));
666 r = sd_journal_get_cursor(j, &cursor);
668 log_error("Failed to get cursor: %s", strerror(-r));
672 if (mode == OUTPUT_JSON_PRETTY)
675 "\t\"__CURSOR\" : \"%s\",\n"
676 "\t\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\",\n"
677 "\t\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\",\n"
678 "\t\"_BOOT_ID\" : \"%s\"",
682 sd_id128_to_string(boot_id, sid));
684 if (mode == OUTPUT_JSON_SSE)
688 "{ \"__CURSOR\" : \"%s\", "
689 "\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\", "
690 "\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\", "
691 "\"_BOOT_ID\" : \"%s\"",
695 sd_id128_to_string(boot_id, sid));
698 h = hashmap_new(string_hash_func, string_compare_func);
702 /* First round, iterate through the entry and count how often each field appears */
703 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
709 memcmp(data, "_BOOT_ID=", 9) == 0)
712 eq = memchr(data, '=', length);
716 n = strndup(data, eq - (const char*) data);
722 u = PTR_TO_UINT(hashmap_get(h, n));
724 r = hashmap_put(h, n, UINT_TO_PTR(1));
730 r = hashmap_update(h, n, UINT_TO_PTR(u + 1));
744 SD_JOURNAL_FOREACH_DATA(j, data, length) {
750 /* We already printed the boot id, from the data in
751 * the header, hence let's suppress it here */
753 memcmp(data, "_BOOT_ID=", 9) == 0)
756 eq = memchr(data, '=', length);
761 if (mode == OUTPUT_JSON_PRETTY)
767 m = eq - (const char*) data;
769 n = strndup(data, m);
775 u = PTR_TO_UINT(hashmap_get2(h, n, (void**) &kk));
777 /* We already printed this, let's jump to the next */
783 /* Field only appears once, output it directly */
785 json_escape(f, data, m, flags);
788 json_escape(f, eq + 1, length - m - 1, flags);
790 hashmap_remove(h, n);
799 /* Field appears multiple times, output it as array */
800 json_escape(f, data, m, flags);
802 json_escape(f, eq + 1, length - m - 1, flags);
804 /* Iterate through the end of the list */
806 while (sd_journal_enumerate_data(j, &data, &length) > 0) {
810 if (memcmp(data, n, m) != 0)
813 if (((const char*) data)[m] != '=')
817 json_escape(f, (const char*) data + m + 1, length - m - 1, flags);
822 hashmap_remove(h, n);
826 /* Iterate data fields form the beginning */
836 if (mode == OUTPUT_JSON_PRETTY)
838 else if (mode == OUTPUT_JSON_SSE)
846 while ((k = hashmap_steal_first_key(h)))
854 static int output_cat(
868 sd_journal_set_data_threshold(j, 0);
870 r = sd_journal_get_data(j, "MESSAGE", &data, &l);
872 /* An entry without MESSAGE=? */
876 log_error("Failed to get data: %s", strerror(-r));
882 fwrite((const char*) data + 8, 1, l - 8, f);
888 static int (*output_funcs[_OUTPUT_MODE_MAX])(
893 OutputFlags flags) = {
895 [OUTPUT_SHORT] = output_short,
896 [OUTPUT_SHORT_ISO] = output_short,
897 [OUTPUT_SHORT_PRECISE] = output_short,
898 [OUTPUT_SHORT_MONOTONIC] = output_short,
899 [OUTPUT_VERBOSE] = output_verbose,
900 [OUTPUT_EXPORT] = output_export,
901 [OUTPUT_JSON] = output_json,
902 [OUTPUT_JSON_PRETTY] = output_json,
903 [OUTPUT_JSON_SSE] = output_json,
904 [OUTPUT_CAT] = output_cat
917 assert(mode < _OUTPUT_MODE_MAX);
920 n_columns = columns();
922 ret = output_funcs[mode](f, j, mode, n_columns, flags);
925 if (ellipsized && ret > 0)
931 static int maybe_print_begin_newline(FILE *f, OutputFlags *flags) {
935 if (!(*flags & OUTPUT_BEGIN_NEWLINE))
938 /* Print a beginning new line if that's request, but only once
939 * on the first line we print. */
942 *flags &= ~OUTPUT_BEGIN_NEWLINE;
946 static int show_journal(FILE *f,
957 bool need_seek = false;
958 int warn_cutoff = flags & OUTPUT_WARN_CUTOFF;
962 assert(mode < _OUTPUT_MODE_MAX);
965 r = sd_journal_seek_tail(j);
969 r = sd_journal_previous_skip(j, how_many);
978 r = sd_journal_next(j);
988 if (not_before > 0) {
989 r = sd_journal_get_monotonic_usec(j, &usec, NULL);
991 /* -ESTALE is returned if the
992 timestamp is not from this boot */
998 if (usec < not_before)
1003 maybe_print_begin_newline(f, &flags);
1005 r = output_journal(f, j, mode, n_columns, flags, ellipsized);
1010 if (warn_cutoff && line < how_many && not_before > 0) {
1014 /* Check whether the cutoff line is too early */
1016 r = sd_id128_get_boot(&boot_id);
1020 r = sd_journal_get_cutoff_monotonic_usec(j, boot_id, &cutoff, NULL);
1024 if (r > 0 && not_before < cutoff) {
1025 maybe_print_begin_newline(f, &flags);
1026 fprintf(f, "Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.\n");
1029 warn_cutoff = false;
1032 if (!(flags & OUTPUT_FOLLOW))
1035 r = sd_journal_wait(j, (usec_t) -1);
1045 int add_matches_for_unit(sd_journal *j, const char *unit) {
1047 char *m1, *m2, *m3, *m4;
1052 m1 = strappenda("_SYSTEMD_UNIT=", unit);
1053 m2 = strappenda("COREDUMP_UNIT=", unit);
1054 m3 = strappenda("UNIT=", unit);
1055 m4 = strappenda("OBJECT_SYSTEMD_UNIT=", unit);
1058 /* Look for messages from the service itself */
1059 (r = sd_journal_add_match(j, m1, 0)) ||
1061 /* Look for coredumps of the service */
1062 (r = sd_journal_add_disjunction(j)) ||
1063 (r = sd_journal_add_match(j, "MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1", 0)) ||
1064 (r = sd_journal_add_match(j, "_UID=0", 0)) ||
1065 (r = sd_journal_add_match(j, m2, 0)) ||
1067 /* Look for messages from PID 1 about this service */
1068 (r = sd_journal_add_disjunction(j)) ||
1069 (r = sd_journal_add_match(j, "_PID=1", 0)) ||
1070 (r = sd_journal_add_match(j, m3, 0)) ||
1072 /* Look for messages from authorized daemons about this service */
1073 (r = sd_journal_add_disjunction(j)) ||
1074 (r = sd_journal_add_match(j, "_UID=0", 0)) ||
1075 (r = sd_journal_add_match(j, m4, 0))
1078 if (r == 0 && endswith(unit, ".slice")) {
1079 char *m5 = strappend("_SYSTEMD_SLICE=", unit);
1081 /* Show all messages belonging to a slice */
1083 (r = sd_journal_add_disjunction(j)) ||
1084 (r = sd_journal_add_match(j, m5, 0))
1091 int add_matches_for_user_unit(sd_journal *j, const char *unit, uid_t uid) {
1093 char *m1, *m2, *m3, *m4;
1094 char muid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)];
1099 m1 = strappenda("_SYSTEMD_USER_UNIT=", unit);
1100 m2 = strappenda("USER_UNIT=", unit);
1101 m3 = strappenda("COREDUMP_USER_UNIT=", unit);
1102 m4 = strappenda("OBJECT_SYSTEMD_USER_UNIT=", unit);
1103 sprintf(muid, "_UID="UID_FMT, uid);
1106 /* Look for messages from the user service itself */
1107 (r = sd_journal_add_match(j, m1, 0)) ||
1108 (r = sd_journal_add_match(j, muid, 0)) ||
1110 /* Look for messages from systemd about this service */
1111 (r = sd_journal_add_disjunction(j)) ||
1112 (r = sd_journal_add_match(j, m2, 0)) ||
1113 (r = sd_journal_add_match(j, muid, 0)) ||
1115 /* Look for coredumps of the service */
1116 (r = sd_journal_add_disjunction(j)) ||
1117 (r = sd_journal_add_match(j, m3, 0)) ||
1118 (r = sd_journal_add_match(j, muid, 0)) ||
1119 (r = sd_journal_add_match(j, "_UID=0", 0)) ||
1121 /* Look for messages from authorized daemons about this service */
1122 (r = sd_journal_add_disjunction(j)) ||
1123 (r = sd_journal_add_match(j, m4, 0)) ||
1124 (r = sd_journal_add_match(j, muid, 0)) ||
1125 (r = sd_journal_add_match(j, "_UID=0", 0))
1128 if (r == 0 && endswith(unit, ".slice")) {
1129 char *m5 = strappend("_SYSTEMD_SLICE=", unit);
1131 /* Show all messages belonging to a slice */
1133 (r = sd_journal_add_disjunction(j)) ||
1134 (r = sd_journal_add_match(j, m5, 0)) ||
1135 (r = sd_journal_add_match(j, muid, 0))
1142 static int get_boot_id_for_machine(const char *machine, sd_id128_t *boot_id) {
1143 _cleanup_close_pair_ int pair[2] = { -1, -1 };
1144 _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, rootfd = -1;
1154 if (!filename_is_safe(machine))
1157 r = container_get_leader(machine, &pid);
1161 r = namespace_open(pid, &pidnsfd, &mntnsfd, &rootfd);
1165 if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0)
1175 pair[0] = safe_close(pair[0]);
1177 r = namespace_enter(pidnsfd, mntnsfd, rootfd);
1179 _exit(EXIT_FAILURE);
1181 fd = open("/proc/sys/kernel/random/boot_id", O_RDONLY|O_CLOEXEC|O_NOCTTY);
1183 _exit(EXIT_FAILURE);
1185 k = loop_read(fd, buf, 36, false);
1188 _exit(EXIT_FAILURE);
1190 k = send(pair[1], buf, 36, MSG_NOSIGNAL);
1192 _exit(EXIT_FAILURE);
1194 _exit(EXIT_SUCCESS);
1197 pair[1] = safe_close(pair[1]);
1199 r = wait_for_terminate(child, &si);
1200 if (r < 0 || si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)
1201 return r < 0 ? r : -EIO;
1203 k = recv(pair[0], buf, 36, 0);
1208 r = sd_id128_from_string(buf, boot_id);
1215 int add_match_this_boot(sd_journal *j, const char *machine) {
1216 char match[9+32+1] = "_BOOT_ID=";
1223 r = get_boot_id_for_machine(machine, &boot_id);
1225 log_error("Failed to get boot id of container %s: %s", machine, strerror(-r));
1229 r = sd_id128_get_boot(&boot_id);
1231 log_error("Failed to get boot id: %s", strerror(-r));
1236 sd_id128_to_string(boot_id, match + 9);
1237 r = sd_journal_add_match(j, match, strlen(match));
1239 log_error("Failed to add match: %s", strerror(-r));
1243 r = sd_journal_add_conjunction(j);
1250 int show_journal_by_unit(
1262 _cleanup_journal_close_ sd_journal*j = NULL;
1264 int jflags = SD_JOURNAL_LOCAL_ONLY | system * SD_JOURNAL_SYSTEM;
1267 assert(mode < _OUTPUT_MODE_MAX);
1273 r = sd_journal_open(&j, jflags);
1277 r = add_match_this_boot(j, NULL);
1282 r = add_matches_for_unit(j, unit);
1284 r = add_matches_for_user_unit(j, unit, uid);
1288 if (_unlikely_(log_get_max_level() >= LOG_PRI(LOG_DEBUG))) {
1289 _cleanup_free_ char *filter;
1291 filter = journal_make_match_string(j);
1292 log_debug("Journal filter: %s", filter);
1295 return show_journal(f, j, mode, n_columns, not_before, how_many, flags, ellipsized);
1298 static const char *const output_mode_table[_OUTPUT_MODE_MAX] = {
1299 [OUTPUT_SHORT] = "short",
1300 [OUTPUT_SHORT_ISO] = "short-iso",
1301 [OUTPUT_SHORT_PRECISE] = "short-precise",
1302 [OUTPUT_SHORT_MONOTONIC] = "short-monotonic",
1303 [OUTPUT_VERBOSE] = "verbose",
1304 [OUTPUT_EXPORT] = "export",
1305 [OUTPUT_JSON] = "json",
1306 [OUTPUT_JSON_PRETTY] = "json-pretty",
1307 [OUTPUT_JSON_SSE] = "json-sse",
1308 [OUTPUT_CAT] = "cat"
1311 DEFINE_STRING_TABLE_LOOKUP(output_mode, OutputMode);