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]",
304 (unsigned long long) (t / USEC_PER_SEC),
305 (unsigned long long) (t % USEC_PER_SEC));
307 n += 1 + 5 + 1 + 6 + 1;
314 struct tm *(*gettime_r)(const time_t *, struct tm *);
317 gettime_r = (flags & OUTPUT_UTC) ? gmtime_r : localtime_r;
320 r = safe_atou64(realtime, &x);
323 r = sd_journal_get_realtime_usec(j, &x);
326 log_error("Failed to get realtime timestamp: %s", strerror(-r));
330 t = (time_t) (x / USEC_PER_SEC);
333 case OUTPUT_SHORT_ISO:
334 r = strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S%z", gettime_r(&t, &tm));
336 case OUTPUT_SHORT_PRECISE:
337 r = strftime(buf, sizeof(buf), "%b %d %H:%M:%S", gettime_r(&t, &tm));
339 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
340 ".%06llu", (unsigned long long) (x % USEC_PER_SEC));
344 r = strftime(buf, sizeof(buf), "%b %d %H:%M:%S", gettime_r(&t, &tm));
348 log_error("Failed to format time.");
356 if (hostname && shall_print(hostname, hostname_len, flags)) {
357 fprintf(f, " %.*s", (int) hostname_len, hostname);
358 n += hostname_len + 1;
361 if (identifier && shall_print(identifier, identifier_len, flags)) {
362 fprintf(f, " %.*s", (int) identifier_len, identifier);
363 n += identifier_len + 1;
364 } else if (comm && shall_print(comm, comm_len, flags)) {
365 fprintf(f, " %.*s", (int) comm_len, comm);
370 if (pid && shall_print(pid, pid_len, flags)) {
371 fprintf(f, "[%.*s]", (int) pid_len, pid);
373 } else if (fake_pid && shall_print(fake_pid, fake_pid_len, flags)) {
374 fprintf(f, "[%.*s]", (int) fake_pid_len, fake_pid);
375 n += fake_pid_len + 2;
378 if (!(flags & OUTPUT_SHOW_ALL) && !utf8_is_printable(message, message_len)) {
379 char bytes[FORMAT_BYTES_MAX];
380 fprintf(f, ": [%s blob data]\n", format_bytes(bytes, sizeof(bytes), message_len));
384 print_multiline(f, n + 2, n_columns, flags, p, message, message_len);
387 if (flags & OUTPUT_CATALOG)
393 static int output_verbose(
402 _cleanup_free_ char *cursor = NULL;
404 char ts[FORMAT_TIMESTAMP_MAX + 7];
410 sd_journal_set_data_threshold(j, 0);
412 r = sd_journal_get_data(j, "_SOURCE_REALTIME_TIMESTAMP", &data, &length);
414 log_debug("Source realtime timestamp not found");
416 log_full(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR,
417 "Failed to get source realtime timestamp: %s", strerror(-r));
420 _cleanup_free_ char *value = NULL;
423 r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=", &value, &size);
425 log_debug("_SOURCE_REALTIME_TIMESTAMP invalid: %s", strerror(-r));
427 r = safe_atou64(value, &realtime);
429 log_debug("Failed to parse realtime timestamp: %s",
435 r = sd_journal_get_realtime_usec(j, &realtime);
437 log_full(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR,
438 "Failed to get realtime timestamp: %s", strerror(-r));
443 r = sd_journal_get_cursor(j, &cursor);
445 log_error("Failed to get cursor: %s", strerror(-r));
449 fprintf(f, "%s [%s]\n",
450 format_timestamp_us(ts, sizeof(ts), realtime, flags & OUTPUT_UTC),
453 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
456 const char *on = "", *off = "";
458 c = memchr(data, '=', length);
460 log_error("Invalid field.");
463 fieldlen = c - (const char*) data;
465 if (flags & OUTPUT_COLOR && startswith(data, "MESSAGE=")) {
466 on = ANSI_HIGHLIGHT_ON;
467 off = ANSI_HIGHLIGHT_OFF;
470 if (flags & OUTPUT_SHOW_ALL ||
471 (((length < PRINT_CHAR_THRESHOLD) || flags & OUTPUT_FULL_WIDTH)
472 && utf8_is_printable(data, length))) {
473 fprintf(f, " %s%.*s=", on, fieldlen, (const char*)data);
474 print_multiline(f, 4 + fieldlen + 1, 0, OUTPUT_FULL_WIDTH, 0, c + 1, length - fieldlen - 1);
477 char bytes[FORMAT_BYTES_MAX];
479 fprintf(f, " %s%.*s=[%s blob data]%s\n",
481 (int) (c - (const char*) data),
483 format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1),
491 if (flags & OUTPUT_CATALOG)
497 static int output_export(
507 usec_t realtime, monotonic;
508 _cleanup_free_ char *cursor = NULL;
514 sd_journal_set_data_threshold(j, 0);
516 r = sd_journal_get_realtime_usec(j, &realtime);
518 log_error("Failed to get realtime timestamp: %s", strerror(-r));
522 r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
524 log_error("Failed to get monotonic timestamp: %s", strerror(-r));
528 r = sd_journal_get_cursor(j, &cursor);
530 log_error("Failed to get cursor: %s", strerror(-r));
536 "__REALTIME_TIMESTAMP="USEC_FMT"\n"
537 "__MONOTONIC_TIMESTAMP="USEC_FMT"\n"
542 sd_id128_to_string(boot_id, sid));
544 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
546 /* We already printed the boot id, from the data in
547 * the header, hence let's suppress it here */
549 startswith(data, "_BOOT_ID="))
552 if (utf8_is_printable_newline(data, length, false))
553 fwrite(data, length, 1, f);
558 c = memchr(data, '=', length);
560 log_error("Invalid field.");
564 fwrite(data, c - (const char*) data, 1, f);
566 le64 = htole64(length - (c - (const char*) data) - 1);
567 fwrite(&le64, sizeof(le64), 1, f);
568 fwrite(c + 1, length - (c - (const char*) data) - 1, 1, f);
591 if (!(flags & OUTPUT_SHOW_ALL) && l >= JSON_THRESHOLD)
595 else if (!utf8_is_printable(p, l)) {
596 bool not_first = false;
602 fprintf(f, ", %u", (uint8_t) *p);
605 fprintf(f, "%u", (uint8_t) *p);
617 if (*p == '"' || *p == '\\') {
620 } else if (*p == '\n')
623 fprintf(f, "\\u%04x", *p);
635 static int output_json(
642 uint64_t realtime, monotonic;
643 _cleanup_free_ char *cursor = NULL;
650 bool done, separator;
654 sd_journal_set_data_threshold(j, flags & OUTPUT_SHOW_ALL ? 0 : JSON_THRESHOLD);
656 r = sd_journal_get_realtime_usec(j, &realtime);
658 log_error("Failed to get realtime timestamp: %s", strerror(-r));
662 r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
664 log_error("Failed to get monotonic timestamp: %s", strerror(-r));
668 r = sd_journal_get_cursor(j, &cursor);
670 log_error("Failed to get cursor: %s", strerror(-r));
674 if (mode == OUTPUT_JSON_PRETTY)
677 "\t\"__CURSOR\" : \"%s\",\n"
678 "\t\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\",\n"
679 "\t\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\",\n"
680 "\t\"_BOOT_ID\" : \"%s\"",
684 sd_id128_to_string(boot_id, sid));
686 if (mode == OUTPUT_JSON_SSE)
690 "{ \"__CURSOR\" : \"%s\", "
691 "\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\", "
692 "\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\", "
693 "\"_BOOT_ID\" : \"%s\"",
697 sd_id128_to_string(boot_id, sid));
700 h = hashmap_new(&string_hash_ops);
704 /* First round, iterate through the entry and count how often each field appears */
705 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
711 memcmp(data, "_BOOT_ID=", 9) == 0)
714 eq = memchr(data, '=', length);
718 n = strndup(data, eq - (const char*) data);
724 u = PTR_TO_UINT(hashmap_get(h, n));
726 r = hashmap_put(h, n, UINT_TO_PTR(1));
732 r = hashmap_update(h, n, UINT_TO_PTR(u + 1));
746 SD_JOURNAL_FOREACH_DATA(j, data, length) {
752 /* We already printed the boot id, from the data in
753 * the header, hence let's suppress it here */
755 memcmp(data, "_BOOT_ID=", 9) == 0)
758 eq = memchr(data, '=', length);
763 if (mode == OUTPUT_JSON_PRETTY)
769 m = eq - (const char*) data;
771 n = strndup(data, m);
777 u = PTR_TO_UINT(hashmap_get2(h, n, (void**) &kk));
779 /* We already printed this, let's jump to the next */
785 /* Field only appears once, output it directly */
787 json_escape(f, data, m, flags);
790 json_escape(f, eq + 1, length - m - 1, flags);
792 hashmap_remove(h, n);
801 /* Field appears multiple times, output it as array */
802 json_escape(f, data, m, flags);
804 json_escape(f, eq + 1, length - m - 1, flags);
806 /* Iterate through the end of the list */
808 while (sd_journal_enumerate_data(j, &data, &length) > 0) {
812 if (memcmp(data, n, m) != 0)
815 if (((const char*) data)[m] != '=')
819 json_escape(f, (const char*) data + m + 1, length - m - 1, flags);
824 hashmap_remove(h, n);
828 /* Iterate data fields form the beginning */
838 if (mode == OUTPUT_JSON_PRETTY)
840 else if (mode == OUTPUT_JSON_SSE)
848 while ((k = hashmap_steal_first_key(h)))
856 static int output_cat(
870 sd_journal_set_data_threshold(j, 0);
872 r = sd_journal_get_data(j, "MESSAGE", &data, &l);
874 /* An entry without MESSAGE=? */
878 log_error("Failed to get data: %s", strerror(-r));
884 fwrite((const char*) data + 8, 1, l - 8, f);
890 static int (*output_funcs[_OUTPUT_MODE_MAX])(
895 OutputFlags flags) = {
897 [OUTPUT_SHORT] = output_short,
898 [OUTPUT_SHORT_ISO] = output_short,
899 [OUTPUT_SHORT_PRECISE] = output_short,
900 [OUTPUT_SHORT_MONOTONIC] = output_short,
901 [OUTPUT_VERBOSE] = output_verbose,
902 [OUTPUT_EXPORT] = output_export,
903 [OUTPUT_JSON] = output_json,
904 [OUTPUT_JSON_PRETTY] = output_json,
905 [OUTPUT_JSON_SSE] = output_json,
906 [OUTPUT_CAT] = output_cat
919 assert(mode < _OUTPUT_MODE_MAX);
922 n_columns = columns();
924 ret = output_funcs[mode](f, j, mode, n_columns, flags);
927 if (ellipsized && ret > 0)
933 static int maybe_print_begin_newline(FILE *f, OutputFlags *flags) {
937 if (!(*flags & OUTPUT_BEGIN_NEWLINE))
940 /* Print a beginning new line if that's request, but only once
941 * on the first line we print. */
944 *flags &= ~OUTPUT_BEGIN_NEWLINE;
948 static int show_journal(FILE *f,
959 bool need_seek = false;
960 int warn_cutoff = flags & OUTPUT_WARN_CUTOFF;
964 assert(mode < _OUTPUT_MODE_MAX);
967 r = sd_journal_seek_tail(j);
971 r = sd_journal_previous_skip(j, how_many);
980 r = sd_journal_next(j);
990 if (not_before > 0) {
991 r = sd_journal_get_monotonic_usec(j, &usec, NULL);
993 /* -ESTALE is returned if the
994 timestamp is not from this boot */
1000 if (usec < not_before)
1005 maybe_print_begin_newline(f, &flags);
1007 r = output_journal(f, j, mode, n_columns, flags, ellipsized);
1012 if (warn_cutoff && line < how_many && not_before > 0) {
1016 /* Check whether the cutoff line is too early */
1018 r = sd_id128_get_boot(&boot_id);
1022 r = sd_journal_get_cutoff_monotonic_usec(j, boot_id, &cutoff, NULL);
1026 if (r > 0 && not_before < cutoff) {
1027 maybe_print_begin_newline(f, &flags);
1028 fprintf(f, "Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.\n");
1031 warn_cutoff = false;
1034 if (!(flags & OUTPUT_FOLLOW))
1037 r = sd_journal_wait(j, USEC_INFINITY);
1047 int add_matches_for_unit(sd_journal *j, const char *unit) {
1049 char *m1, *m2, *m3, *m4;
1054 m1 = strappenda("_SYSTEMD_UNIT=", unit);
1055 m2 = strappenda("COREDUMP_UNIT=", unit);
1056 m3 = strappenda("UNIT=", unit);
1057 m4 = strappenda("OBJECT_SYSTEMD_UNIT=", unit);
1060 /* Look for messages from the service itself */
1061 (r = sd_journal_add_match(j, m1, 0)) ||
1063 /* Look for coredumps of the service */
1064 (r = sd_journal_add_disjunction(j)) ||
1065 (r = sd_journal_add_match(j, "MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1", 0)) ||
1066 (r = sd_journal_add_match(j, "_UID=0", 0)) ||
1067 (r = sd_journal_add_match(j, m2, 0)) ||
1069 /* Look for messages from PID 1 about this service */
1070 (r = sd_journal_add_disjunction(j)) ||
1071 (r = sd_journal_add_match(j, "_PID=1", 0)) ||
1072 (r = sd_journal_add_match(j, m3, 0)) ||
1074 /* Look for messages from authorized daemons about this service */
1075 (r = sd_journal_add_disjunction(j)) ||
1076 (r = sd_journal_add_match(j, "_UID=0", 0)) ||
1077 (r = sd_journal_add_match(j, m4, 0))
1080 if (r == 0 && endswith(unit, ".slice")) {
1081 char *m5 = strappend("_SYSTEMD_SLICE=", unit);
1083 /* Show all messages belonging to a slice */
1085 (r = sd_journal_add_disjunction(j)) ||
1086 (r = sd_journal_add_match(j, m5, 0))
1093 int add_matches_for_user_unit(sd_journal *j, const char *unit, uid_t uid) {
1095 char *m1, *m2, *m3, *m4;
1096 char muid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)];
1101 m1 = strappenda("_SYSTEMD_USER_UNIT=", unit);
1102 m2 = strappenda("USER_UNIT=", unit);
1103 m3 = strappenda("COREDUMP_USER_UNIT=", unit);
1104 m4 = strappenda("OBJECT_SYSTEMD_USER_UNIT=", unit);
1105 sprintf(muid, "_UID="UID_FMT, uid);
1108 /* Look for messages from the user service itself */
1109 (r = sd_journal_add_match(j, m1, 0)) ||
1110 (r = sd_journal_add_match(j, muid, 0)) ||
1112 /* Look for messages from systemd about this service */
1113 (r = sd_journal_add_disjunction(j)) ||
1114 (r = sd_journal_add_match(j, m2, 0)) ||
1115 (r = sd_journal_add_match(j, muid, 0)) ||
1117 /* Look for coredumps of the service */
1118 (r = sd_journal_add_disjunction(j)) ||
1119 (r = sd_journal_add_match(j, m3, 0)) ||
1120 (r = sd_journal_add_match(j, muid, 0)) ||
1121 (r = sd_journal_add_match(j, "_UID=0", 0)) ||
1123 /* Look for messages from authorized daemons about this service */
1124 (r = sd_journal_add_disjunction(j)) ||
1125 (r = sd_journal_add_match(j, m4, 0)) ||
1126 (r = sd_journal_add_match(j, muid, 0)) ||
1127 (r = sd_journal_add_match(j, "_UID=0", 0))
1130 if (r == 0 && endswith(unit, ".slice")) {
1131 char *m5 = strappend("_SYSTEMD_SLICE=", unit);
1133 /* Show all messages belonging to a slice */
1135 (r = sd_journal_add_disjunction(j)) ||
1136 (r = sd_journal_add_match(j, m5, 0)) ||
1137 (r = sd_journal_add_match(j, muid, 0))
1144 static int get_boot_id_for_machine(const char *machine, sd_id128_t *boot_id) {
1145 _cleanup_close_pair_ int pair[2] = { -1, -1 };
1146 _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, rootfd = -1;
1156 if (!filename_is_safe(machine))
1159 r = container_get_leader(machine, &pid);
1163 r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &rootfd);
1167 if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0)
1177 pair[0] = safe_close(pair[0]);
1179 r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd);
1181 _exit(EXIT_FAILURE);
1183 fd = open("/proc/sys/kernel/random/boot_id", O_RDONLY|O_CLOEXEC|O_NOCTTY);
1185 _exit(EXIT_FAILURE);
1187 k = loop_read(fd, buf, 36, false);
1190 _exit(EXIT_FAILURE);
1192 k = send(pair[1], buf, 36, MSG_NOSIGNAL);
1194 _exit(EXIT_FAILURE);
1196 _exit(EXIT_SUCCESS);
1199 pair[1] = safe_close(pair[1]);
1201 r = wait_for_terminate(child, &si);
1202 if (r < 0 || si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)
1203 return r < 0 ? r : -EIO;
1205 k = recv(pair[0], buf, 36, 0);
1210 r = sd_id128_from_string(buf, boot_id);
1217 int add_match_this_boot(sd_journal *j, const char *machine) {
1218 char match[9+32+1] = "_BOOT_ID=";
1225 r = get_boot_id_for_machine(machine, &boot_id);
1227 log_error("Failed to get boot id of container %s: %s", machine, strerror(-r));
1231 r = sd_id128_get_boot(&boot_id);
1233 log_error("Failed to get boot id: %s", strerror(-r));
1238 sd_id128_to_string(boot_id, match + 9);
1239 r = sd_journal_add_match(j, match, strlen(match));
1241 log_error("Failed to add match: %s", strerror(-r));
1245 r = sd_journal_add_conjunction(j);
1252 int show_journal_by_unit(
1264 _cleanup_journal_close_ sd_journal*j = NULL;
1266 int jflags = SD_JOURNAL_LOCAL_ONLY | system * SD_JOURNAL_SYSTEM;
1269 assert(mode < _OUTPUT_MODE_MAX);
1275 r = sd_journal_open(&j, jflags);
1279 r = add_match_this_boot(j, NULL);
1284 r = add_matches_for_unit(j, unit);
1286 r = add_matches_for_user_unit(j, unit, uid);
1290 if (_unlikely_(log_get_max_level() >= LOG_PRI(LOG_DEBUG))) {
1291 _cleanup_free_ char *filter;
1293 filter = journal_make_match_string(j);
1294 log_debug("Journal filter: %s", filter);
1297 return show_journal(f, j, mode, n_columns, not_before, how_many, flags, ellipsized);
1300 static const char *const output_mode_table[_OUTPUT_MODE_MAX] = {
1301 [OUTPUT_SHORT] = "short",
1302 [OUTPUT_SHORT_ISO] = "short-iso",
1303 [OUTPUT_SHORT_PRECISE] = "short-precise",
1304 [OUTPUT_SHORT_MONOTONIC] = "short-monotonic",
1305 [OUTPUT_VERBOSE] = "verbose",
1306 [OUTPUT_EXPORT] = "export",
1307 [OUTPUT_JSON] = "json",
1308 [OUTPUT_JSON_PRETTY] = "json-pretty",
1309 [OUTPUT_JSON_SSE] = "json-sse",
1310 [OUTPUT_CAT] = "cat"
1313 DEFINE_STRING_TABLE_LOOKUP(output_mode, OutputMode);