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 return log_error_errno(r, "Failed to get monotonic timestamp: %m");
301 fprintf(f, "[%5llu.%06llu]",
302 (unsigned long long) (t / USEC_PER_SEC),
303 (unsigned long long) (t % USEC_PER_SEC));
305 n += 1 + 5 + 1 + 6 + 1;
312 struct tm *(*gettime_r)(const time_t *, struct tm *);
315 gettime_r = (flags & OUTPUT_UTC) ? gmtime_r : localtime_r;
318 r = safe_atou64(realtime, &x);
321 r = sd_journal_get_realtime_usec(j, &x);
324 return log_error_errno(r, "Failed to get realtime timestamp: %m");
326 t = (time_t) (x / USEC_PER_SEC);
329 case OUTPUT_SHORT_ISO:
330 r = strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S%z", gettime_r(&t, &tm));
332 case OUTPUT_SHORT_PRECISE:
333 r = strftime(buf, sizeof(buf), "%b %d %H:%M:%S", gettime_r(&t, &tm));
335 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
336 ".%06llu", (unsigned long long) (x % USEC_PER_SEC));
340 r = strftime(buf, sizeof(buf), "%b %d %H:%M:%S", gettime_r(&t, &tm));
344 log_error("Failed to format time.");
352 if (hostname && shall_print(hostname, hostname_len, flags)) {
353 fprintf(f, " %.*s", (int) hostname_len, hostname);
354 n += hostname_len + 1;
357 if (identifier && shall_print(identifier, identifier_len, flags)) {
358 fprintf(f, " %.*s", (int) identifier_len, identifier);
359 n += identifier_len + 1;
360 } else if (comm && shall_print(comm, comm_len, flags)) {
361 fprintf(f, " %.*s", (int) comm_len, comm);
364 fputs(" unknown", f);
366 if (pid && shall_print(pid, pid_len, flags)) {
367 fprintf(f, "[%.*s]", (int) pid_len, pid);
369 } else if (fake_pid && shall_print(fake_pid, fake_pid_len, flags)) {
370 fprintf(f, "[%.*s]", (int) fake_pid_len, fake_pid);
371 n += fake_pid_len + 2;
374 if (!(flags & OUTPUT_SHOW_ALL) && !utf8_is_printable(message, message_len)) {
375 char bytes[FORMAT_BYTES_MAX];
376 fprintf(f, ": [%s blob data]\n", format_bytes(bytes, sizeof(bytes), message_len));
380 print_multiline(f, n + 2, n_columns, flags, p, message, message_len);
383 if (flags & OUTPUT_CATALOG)
389 static int output_verbose(
398 _cleanup_free_ char *cursor = NULL;
400 char ts[FORMAT_TIMESTAMP_MAX + 7];
406 sd_journal_set_data_threshold(j, 0);
408 r = sd_journal_get_data(j, "_SOURCE_REALTIME_TIMESTAMP", &data, &length);
410 log_debug("Source realtime timestamp not found");
412 log_full(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR,
413 "Failed to get source realtime timestamp: %s", strerror(-r));
416 _cleanup_free_ char *value = NULL;
419 r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=", &value, &size);
421 log_debug_errno(r, "_SOURCE_REALTIME_TIMESTAMP invalid: %m");
423 r = safe_atou64(value, &realtime);
425 log_debug_errno(r, "Failed to parse realtime timestamp: %m");
430 r = sd_journal_get_realtime_usec(j, &realtime);
432 log_full(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR,
433 "Failed to get realtime timestamp: %s", strerror(-r));
438 r = sd_journal_get_cursor(j, &cursor);
440 return log_error_errno(r, "Failed to get cursor: %m");
442 fprintf(f, "%s [%s]\n",
444 format_timestamp_us_utc(ts, sizeof(ts), realtime) :
445 format_timestamp_us(ts, sizeof(ts), realtime),
448 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
451 const char *on = "", *off = "";
453 c = memchr(data, '=', length);
455 log_error("Invalid field.");
458 fieldlen = c - (const char*) data;
460 if (flags & OUTPUT_COLOR && startswith(data, "MESSAGE=")) {
461 on = ANSI_HIGHLIGHT_ON;
462 off = ANSI_HIGHLIGHT_OFF;
465 if (flags & OUTPUT_SHOW_ALL ||
466 (((length < PRINT_CHAR_THRESHOLD) || flags & OUTPUT_FULL_WIDTH)
467 && utf8_is_printable(data, length))) {
468 fprintf(f, " %s%.*s=", on, fieldlen, (const char*)data);
469 print_multiline(f, 4 + fieldlen + 1, 0, OUTPUT_FULL_WIDTH, 0, c + 1, length - fieldlen - 1);
472 char bytes[FORMAT_BYTES_MAX];
474 fprintf(f, " %s%.*s=[%s blob data]%s\n",
476 (int) (c - (const char*) data),
478 format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1),
486 if (flags & OUTPUT_CATALOG)
492 static int output_export(
502 usec_t realtime, monotonic;
503 _cleanup_free_ char *cursor = NULL;
509 sd_journal_set_data_threshold(j, 0);
511 r = sd_journal_get_realtime_usec(j, &realtime);
513 return log_error_errno(r, "Failed to get realtime timestamp: %m");
515 r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
517 return log_error_errno(r, "Failed to get monotonic timestamp: %m");
519 r = sd_journal_get_cursor(j, &cursor);
521 return log_error_errno(r, "Failed to get cursor: %m");
525 "__REALTIME_TIMESTAMP="USEC_FMT"\n"
526 "__MONOTONIC_TIMESTAMP="USEC_FMT"\n"
531 sd_id128_to_string(boot_id, sid));
533 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
535 /* We already printed the boot id, from the data in
536 * the header, hence let's suppress it here */
538 startswith(data, "_BOOT_ID="))
541 if (utf8_is_printable_newline(data, length, false))
542 fwrite(data, length, 1, f);
547 c = memchr(data, '=', length);
549 log_error("Invalid field.");
553 fwrite(data, c - (const char*) data, 1, f);
555 le64 = htole64(length - (c - (const char*) data) - 1);
556 fwrite(&le64, sizeof(le64), 1, f);
557 fwrite(c + 1, length - (c - (const char*) data) - 1, 1, f);
580 if (!(flags & OUTPUT_SHOW_ALL) && l >= JSON_THRESHOLD)
584 else if (!utf8_is_printable(p, l)) {
585 bool not_first = false;
591 fprintf(f, ", %u", (uint8_t) *p);
594 fprintf(f, "%u", (uint8_t) *p);
606 if (*p == '"' || *p == '\\') {
609 } else if (*p == '\n')
612 fprintf(f, "\\u%04x", *p);
624 static int output_json(
631 uint64_t realtime, monotonic;
632 _cleanup_free_ char *cursor = NULL;
639 bool done, separator;
643 sd_journal_set_data_threshold(j, flags & OUTPUT_SHOW_ALL ? 0 : JSON_THRESHOLD);
645 r = sd_journal_get_realtime_usec(j, &realtime);
647 return log_error_errno(r, "Failed to get realtime timestamp: %m");
649 r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
651 return log_error_errno(r, "Failed to get monotonic timestamp: %m");
653 r = sd_journal_get_cursor(j, &cursor);
655 return log_error_errno(r, "Failed to get cursor: %m");
657 if (mode == OUTPUT_JSON_PRETTY)
660 "\t\"__CURSOR\" : \"%s\",\n"
661 "\t\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\",\n"
662 "\t\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\",\n"
663 "\t\"_BOOT_ID\" : \"%s\"",
667 sd_id128_to_string(boot_id, sid));
669 if (mode == OUTPUT_JSON_SSE)
673 "{ \"__CURSOR\" : \"%s\", "
674 "\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\", "
675 "\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\", "
676 "\"_BOOT_ID\" : \"%s\"",
680 sd_id128_to_string(boot_id, sid));
683 h = hashmap_new(&string_hash_ops);
687 /* First round, iterate through the entry and count how often each field appears */
688 JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
694 memcmp(data, "_BOOT_ID=", 9) == 0)
697 eq = memchr(data, '=', length);
701 n = strndup(data, eq - (const char*) data);
707 u = PTR_TO_UINT(hashmap_get(h, n));
709 r = hashmap_put(h, n, UINT_TO_PTR(1));
715 r = hashmap_update(h, n, UINT_TO_PTR(u + 1));
729 SD_JOURNAL_FOREACH_DATA(j, data, length) {
735 /* We already printed the boot id, from the data in
736 * the header, hence let's suppress it here */
738 memcmp(data, "_BOOT_ID=", 9) == 0)
741 eq = memchr(data, '=', length);
746 if (mode == OUTPUT_JSON_PRETTY)
752 m = eq - (const char*) data;
754 n = strndup(data, m);
760 u = PTR_TO_UINT(hashmap_get2(h, n, (void**) &kk));
762 /* We already printed this, let's jump to the next */
768 /* Field only appears once, output it directly */
770 json_escape(f, data, m, flags);
773 json_escape(f, eq + 1, length - m - 1, flags);
775 hashmap_remove(h, n);
784 /* Field appears multiple times, output it as array */
785 json_escape(f, data, m, flags);
787 json_escape(f, eq + 1, length - m - 1, flags);
789 /* Iterate through the end of the list */
791 while (sd_journal_enumerate_data(j, &data, &length) > 0) {
795 if (memcmp(data, n, m) != 0)
798 if (((const char*) data)[m] != '=')
802 json_escape(f, (const char*) data + m + 1, length - m - 1, flags);
807 hashmap_remove(h, n);
811 /* Iterate data fields form the beginning */
821 if (mode == OUTPUT_JSON_PRETTY)
823 else if (mode == OUTPUT_JSON_SSE)
831 while ((k = hashmap_steal_first_key(h)))
839 static int output_cat(
853 sd_journal_set_data_threshold(j, 0);
855 r = sd_journal_get_data(j, "MESSAGE", &data, &l);
857 /* An entry without MESSAGE=? */
861 return log_error_errno(r, "Failed to get data: %m");
866 fwrite((const char*) data + 8, 1, l - 8, f);
872 static int (*output_funcs[_OUTPUT_MODE_MAX])(
877 OutputFlags flags) = {
879 [OUTPUT_SHORT] = output_short,
880 [OUTPUT_SHORT_ISO] = output_short,
881 [OUTPUT_SHORT_PRECISE] = output_short,
882 [OUTPUT_SHORT_MONOTONIC] = output_short,
883 [OUTPUT_VERBOSE] = output_verbose,
884 [OUTPUT_EXPORT] = output_export,
885 [OUTPUT_JSON] = output_json,
886 [OUTPUT_JSON_PRETTY] = output_json,
887 [OUTPUT_JSON_SSE] = output_json,
888 [OUTPUT_CAT] = output_cat
901 assert(mode < _OUTPUT_MODE_MAX);
904 n_columns = columns();
906 ret = output_funcs[mode](f, j, mode, n_columns, flags);
909 if (ellipsized && ret > 0)
915 static int maybe_print_begin_newline(FILE *f, OutputFlags *flags) {
919 if (!(*flags & OUTPUT_BEGIN_NEWLINE))
922 /* Print a beginning new line if that's request, but only once
923 * on the first line we print. */
926 *flags &= ~OUTPUT_BEGIN_NEWLINE;
930 static int show_journal(FILE *f,
941 bool need_seek = false;
942 int warn_cutoff = flags & OUTPUT_WARN_CUTOFF;
946 assert(mode < _OUTPUT_MODE_MAX);
949 r = sd_journal_seek_tail(j);
953 r = sd_journal_previous_skip(j, how_many);
962 r = sd_journal_next(j);
972 if (not_before > 0) {
973 r = sd_journal_get_monotonic_usec(j, &usec, NULL);
975 /* -ESTALE is returned if the
976 timestamp is not from this boot */
982 if (usec < not_before)
987 maybe_print_begin_newline(f, &flags);
989 r = output_journal(f, j, mode, n_columns, flags, ellipsized);
994 if (warn_cutoff && line < how_many && not_before > 0) {
998 /* Check whether the cutoff line is too early */
1000 r = sd_id128_get_boot(&boot_id);
1004 r = sd_journal_get_cutoff_monotonic_usec(j, boot_id, &cutoff, NULL);
1008 if (r > 0 && not_before < cutoff) {
1009 maybe_print_begin_newline(f, &flags);
1010 fprintf(f, "Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.\n");
1013 warn_cutoff = false;
1016 if (!(flags & OUTPUT_FOLLOW))
1019 r = sd_journal_wait(j, USEC_INFINITY);
1029 int add_matches_for_unit(sd_journal *j, const char *unit) {
1031 char *m1, *m2, *m3, *m4;
1036 m1 = strappenda("_SYSTEMD_UNIT=", unit);
1037 m2 = strappenda("COREDUMP_UNIT=", unit);
1038 m3 = strappenda("UNIT=", unit);
1039 m4 = strappenda("OBJECT_SYSTEMD_UNIT=", unit);
1042 /* Look for messages from the service itself */
1043 (r = sd_journal_add_match(j, m1, 0)) ||
1045 /* Look for coredumps of the service */
1046 (r = sd_journal_add_disjunction(j)) ||
1047 (r = sd_journal_add_match(j, "MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1", 0)) ||
1048 (r = sd_journal_add_match(j, "_UID=0", 0)) ||
1049 (r = sd_journal_add_match(j, m2, 0)) ||
1051 /* Look for messages from PID 1 about this service */
1052 (r = sd_journal_add_disjunction(j)) ||
1053 (r = sd_journal_add_match(j, "_PID=1", 0)) ||
1054 (r = sd_journal_add_match(j, m3, 0)) ||
1056 /* Look for messages from authorized daemons about this service */
1057 (r = sd_journal_add_disjunction(j)) ||
1058 (r = sd_journal_add_match(j, "_UID=0", 0)) ||
1059 (r = sd_journal_add_match(j, m4, 0))
1062 if (r == 0 && endswith(unit, ".slice")) {
1063 char *m5 = strappend("_SYSTEMD_SLICE=", unit);
1065 /* Show all messages belonging to a slice */
1067 (r = sd_journal_add_disjunction(j)) ||
1068 (r = sd_journal_add_match(j, m5, 0))
1075 int add_matches_for_user_unit(sd_journal *j, const char *unit, uid_t uid) {
1077 char *m1, *m2, *m3, *m4;
1078 char muid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)];
1083 m1 = strappenda("_SYSTEMD_USER_UNIT=", unit);
1084 m2 = strappenda("USER_UNIT=", unit);
1085 m3 = strappenda("COREDUMP_USER_UNIT=", unit);
1086 m4 = strappenda("OBJECT_SYSTEMD_USER_UNIT=", unit);
1087 sprintf(muid, "_UID="UID_FMT, uid);
1090 /* Look for messages from the user service itself */
1091 (r = sd_journal_add_match(j, m1, 0)) ||
1092 (r = sd_journal_add_match(j, muid, 0)) ||
1094 /* Look for messages from systemd about this service */
1095 (r = sd_journal_add_disjunction(j)) ||
1096 (r = sd_journal_add_match(j, m2, 0)) ||
1097 (r = sd_journal_add_match(j, muid, 0)) ||
1099 /* Look for coredumps of the service */
1100 (r = sd_journal_add_disjunction(j)) ||
1101 (r = sd_journal_add_match(j, m3, 0)) ||
1102 (r = sd_journal_add_match(j, muid, 0)) ||
1103 (r = sd_journal_add_match(j, "_UID=0", 0)) ||
1105 /* Look for messages from authorized daemons about this service */
1106 (r = sd_journal_add_disjunction(j)) ||
1107 (r = sd_journal_add_match(j, m4, 0)) ||
1108 (r = sd_journal_add_match(j, muid, 0)) ||
1109 (r = sd_journal_add_match(j, "_UID=0", 0))
1112 if (r == 0 && endswith(unit, ".slice")) {
1113 char *m5 = strappend("_SYSTEMD_SLICE=", unit);
1115 /* Show all messages belonging to a slice */
1117 (r = sd_journal_add_disjunction(j)) ||
1118 (r = sd_journal_add_match(j, m5, 0)) ||
1119 (r = sd_journal_add_match(j, muid, 0))
1126 static int get_boot_id_for_machine(const char *machine, sd_id128_t *boot_id) {
1127 _cleanup_close_pair_ int pair[2] = { -1, -1 };
1128 _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, rootfd = -1;
1138 if (!machine_name_is_valid(machine))
1141 r = container_get_leader(machine, &pid);
1145 r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &rootfd);
1149 if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0)
1159 pair[0] = safe_close(pair[0]);
1161 r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd);
1163 _exit(EXIT_FAILURE);
1165 fd = open("/proc/sys/kernel/random/boot_id", O_RDONLY|O_CLOEXEC|O_NOCTTY);
1167 _exit(EXIT_FAILURE);
1169 k = loop_read(fd, buf, 36, false);
1172 _exit(EXIT_FAILURE);
1174 k = send(pair[1], buf, 36, MSG_NOSIGNAL);
1176 _exit(EXIT_FAILURE);
1178 _exit(EXIT_SUCCESS);
1181 pair[1] = safe_close(pair[1]);
1183 r = wait_for_terminate(child, &si);
1184 if (r < 0 || si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)
1185 return r < 0 ? r : -EIO;
1187 k = recv(pair[0], buf, 36, 0);
1192 r = sd_id128_from_string(buf, boot_id);
1199 int add_match_this_boot(sd_journal *j, const char *machine) {
1200 char match[9+32+1] = "_BOOT_ID=";
1207 r = get_boot_id_for_machine(machine, &boot_id);
1209 return log_error_errno(r, "Failed to get boot id of container %s: %m", machine);
1211 r = sd_id128_get_boot(&boot_id);
1213 return log_error_errno(r, "Failed to get boot id: %m");
1216 sd_id128_to_string(boot_id, match + 9);
1217 r = sd_journal_add_match(j, match, strlen(match));
1219 return log_error_errno(r, "Failed to add match: %m");
1221 r = sd_journal_add_conjunction(j);
1228 int show_journal_by_unit(
1240 _cleanup_journal_close_ sd_journal*j = NULL;
1242 int jflags = SD_JOURNAL_LOCAL_ONLY | system * SD_JOURNAL_SYSTEM;
1245 assert(mode < _OUTPUT_MODE_MAX);
1251 r = sd_journal_open(&j, jflags);
1255 r = add_match_this_boot(j, NULL);
1260 r = add_matches_for_unit(j, unit);
1262 r = add_matches_for_user_unit(j, unit, uid);
1266 if (_unlikely_(log_get_max_level() >= LOG_PRI(LOG_DEBUG))) {
1267 _cleanup_free_ char *filter;
1269 filter = journal_make_match_string(j);
1270 log_debug("Journal filter: %s", filter);
1273 return show_journal(f, j, mode, n_columns, not_before, how_many, flags, ellipsized);
1276 static const char *const output_mode_table[_OUTPUT_MODE_MAX] = {
1277 [OUTPUT_SHORT] = "short",
1278 [OUTPUT_SHORT_ISO] = "short-iso",
1279 [OUTPUT_SHORT_PRECISE] = "short-precise",
1280 [OUTPUT_SHORT_MONOTONIC] = "short-monotonic",
1281 [OUTPUT_VERBOSE] = "verbose",
1282 [OUTPUT_EXPORT] = "export",
1283 [OUTPUT_JSON] = "json",
1284 [OUTPUT_JSON_PRETTY] = "json-pretty",
1285 [OUTPUT_JSON_SSE] = "json-sse",
1286 [OUTPUT_CAT] = "cat"
1289 DEFINE_STRING_TABLE_LOOKUP(output_mode, OutputMode);