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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ | |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2012 Lennart Poettering | |
7 | ||
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. | |
12 | ||
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. | |
17 | ||
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/>. | |
20 | ***/ | |
21 | ||
22 | #include <time.h> | |
23 | #include <errno.h> | |
24 | #include <sys/socket.h> | |
25 | #include <string.h> | |
26 | #include <fcntl.h> | |
27 | ||
28 | #include "logs-show.h" | |
29 | #include "log.h" | |
30 | #include "util.h" | |
31 | #include "utf8.h" | |
32 | #include "hashmap.h" | |
33 | #include "journal-internal.h" | |
34 | #include "formats-util.h" | |
35 | #include "process-util.h" | |
36 | #include "terminal-util.h" | |
37 | #include "hostname-util.h" | |
38 | ||
39 | /* up to three lines (each up to 100 characters), | |
40 | or 300 characters, whichever is less */ | |
41 | #define PRINT_LINE_THRESHOLD 3 | |
42 | #define PRINT_CHAR_THRESHOLD 300 | |
43 | ||
44 | #define JSON_THRESHOLD 4096 | |
45 | ||
46 | static int print_catalog(FILE *f, sd_journal *j) { | |
47 | int r; | |
48 | _cleanup_free_ char *t = NULL, *z = NULL; | |
49 | ||
50 | ||
51 | r = sd_journal_get_catalog(j, &t); | |
52 | if (r < 0) | |
53 | return r; | |
54 | ||
55 | z = strreplace(strstrip(t), "\n", "\n-- "); | |
56 | if (!z) | |
57 | return log_oom(); | |
58 | ||
59 | fputs("-- ", f); | |
60 | fputs(z, f); | |
61 | fputc('\n', f); | |
62 | ||
63 | return 0; | |
64 | } | |
65 | ||
66 | static int parse_field(const void *data, size_t length, const char *field, char **target, size_t *target_size) { | |
67 | size_t fl, nl; | |
68 | void *buf; | |
69 | ||
70 | assert(data); | |
71 | assert(field); | |
72 | assert(target); | |
73 | assert(target_size); | |
74 | ||
75 | fl = strlen(field); | |
76 | if (length < fl) | |
77 | return 0; | |
78 | ||
79 | if (memcmp(data, field, fl)) | |
80 | return 0; | |
81 | ||
82 | nl = length - fl; | |
83 | buf = malloc(nl+1); | |
84 | if (!buf) | |
85 | return log_oom(); | |
86 | ||
87 | memcpy(buf, (const char*) data + fl, nl); | |
88 | ((char*)buf)[nl] = 0; | |
89 | ||
90 | free(*target); | |
91 | *target = buf; | |
92 | *target_size = nl; | |
93 | ||
94 | return 1; | |
95 | } | |
96 | ||
97 | static bool shall_print(const char *p, size_t l, OutputFlags flags) { | |
98 | assert(p); | |
99 | ||
100 | if (flags & OUTPUT_SHOW_ALL) | |
101 | return true; | |
102 | ||
103 | if (l >= PRINT_CHAR_THRESHOLD) | |
104 | return false; | |
105 | ||
106 | if (!utf8_is_printable(p, l)) | |
107 | return false; | |
108 | ||
109 | return true; | |
110 | } | |
111 | ||
112 | static bool print_multiline(FILE *f, unsigned prefix, unsigned n_columns, OutputFlags flags, int priority, const char* message, size_t message_len) { | |
113 | const char *color_on = "", *color_off = ""; | |
114 | const char *pos, *end; | |
115 | bool ellipsized = false; | |
116 | int line = 0; | |
117 | ||
118 | if (flags & OUTPUT_COLOR) { | |
119 | if (priority <= LOG_ERR) { | |
120 | color_on = ANSI_HIGHLIGHT_RED_ON; | |
121 | color_off = ANSI_HIGHLIGHT_OFF; | |
122 | } else if (priority <= LOG_NOTICE) { | |
123 | color_on = ANSI_HIGHLIGHT_ON; | |
124 | color_off = ANSI_HIGHLIGHT_OFF; | |
125 | } | |
126 | } | |
127 | ||
128 | /* A special case: make sure that we print a newline when | |
129 | the message is empty. */ | |
130 | if (message_len == 0) | |
131 | fputs("\n", f); | |
132 | ||
133 | for (pos = message; | |
134 | pos < message + message_len; | |
135 | pos = end + 1, line++) { | |
136 | bool continuation = line > 0; | |
137 | bool tail_line; | |
138 | int len; | |
139 | for (end = pos; end < message + message_len && *end != '\n'; end++) | |
140 | ; | |
141 | len = end - pos; | |
142 | assert(len >= 0); | |
143 | ||
144 | /* We need to figure out when we are showing not-last line, *and* | |
145 | * will skip subsequent lines. In that case, we will put the dots | |
146 | * at the end of the line, instead of putting dots in the middle | |
147 | * or not at all. | |
148 | */ | |
149 | tail_line = | |
150 | line + 1 == PRINT_LINE_THRESHOLD || | |
151 | end + 1 >= message + PRINT_CHAR_THRESHOLD; | |
152 | ||
153 | if (flags & (OUTPUT_FULL_WIDTH | OUTPUT_SHOW_ALL) || | |
154 | (prefix + len + 1 < n_columns && !tail_line)) { | |
155 | fprintf(f, "%*s%s%.*s%s\n", | |
156 | continuation * prefix, "", | |
157 | color_on, len, pos, color_off); | |
158 | continue; | |
159 | } | |
160 | ||
161 | /* Beyond this point, ellipsization will happen. */ | |
162 | ellipsized = true; | |
163 | ||
164 | if (prefix < n_columns && n_columns - prefix >= 3) { | |
165 | if (n_columns - prefix > (unsigned) len + 3) | |
166 | fprintf(f, "%*s%s%.*s...%s\n", | |
167 | continuation * prefix, "", | |
168 | color_on, len, pos, color_off); | |
169 | else { | |
170 | _cleanup_free_ char *e; | |
171 | ||
172 | e = ellipsize_mem(pos, len, n_columns - prefix, | |
173 | tail_line ? 100 : 90); | |
174 | if (!e) | |
175 | fprintf(f, "%*s%s%.*s%s\n", | |
176 | continuation * prefix, "", | |
177 | color_on, len, pos, color_off); | |
178 | else | |
179 | fprintf(f, "%*s%s%s%s\n", | |
180 | continuation * prefix, "", | |
181 | color_on, e, color_off); | |
182 | } | |
183 | } else | |
184 | fputs("...\n", f); | |
185 | ||
186 | if (tail_line) | |
187 | break; | |
188 | } | |
189 | ||
190 | return ellipsized; | |
191 | } | |
192 | ||
193 | static int output_short( | |
194 | FILE *f, | |
195 | sd_journal *j, | |
196 | OutputMode mode, | |
197 | unsigned n_columns, | |
198 | OutputFlags flags) { | |
199 | ||
200 | int r; | |
201 | const void *data; | |
202 | size_t length; | |
203 | size_t n = 0; | |
204 | _cleanup_free_ char *hostname = NULL, *identifier = NULL, *comm = NULL, *pid = NULL, *fake_pid = NULL, *message = NULL, *realtime = NULL, *monotonic = NULL, *priority = NULL; | |
205 | 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 | int p = LOG_INFO; | |
207 | bool ellipsized = false; | |
208 | ||
209 | assert(f); | |
210 | assert(j); | |
211 | ||
212 | /* Set the threshold to one bigger than the actual print | |
213 | * threshold, so that if the line is actually longer than what | |
214 | * we're willing to print, ellipsization will occur. This way | |
215 | * we won't output a misleading line without any indication of | |
216 | * truncation. | |
217 | */ | |
218 | sd_journal_set_data_threshold(j, flags & (OUTPUT_SHOW_ALL|OUTPUT_FULL_WIDTH) ? 0 : PRINT_CHAR_THRESHOLD + 1); | |
219 | ||
220 | JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) { | |
221 | ||
222 | r = parse_field(data, length, "PRIORITY=", &priority, &priority_len); | |
223 | if (r < 0) | |
224 | return r; | |
225 | else if (r > 0) | |
226 | continue; | |
227 | ||
228 | r = parse_field(data, length, "_HOSTNAME=", &hostname, &hostname_len); | |
229 | if (r < 0) | |
230 | return r; | |
231 | else if (r > 0) | |
232 | continue; | |
233 | ||
234 | r = parse_field(data, length, "SYSLOG_IDENTIFIER=", &identifier, &identifier_len); | |
235 | if (r < 0) | |
236 | return r; | |
237 | else if (r > 0) | |
238 | continue; | |
239 | ||
240 | r = parse_field(data, length, "_COMM=", &comm, &comm_len); | |
241 | if (r < 0) | |
242 | return r; | |
243 | else if (r > 0) | |
244 | continue; | |
245 | ||
246 | r = parse_field(data, length, "_PID=", &pid, &pid_len); | |
247 | if (r < 0) | |
248 | return r; | |
249 | else if (r > 0) | |
250 | continue; | |
251 | ||
252 | r = parse_field(data, length, "SYSLOG_PID=", &fake_pid, &fake_pid_len); | |
253 | if (r < 0) | |
254 | return r; | |
255 | else if (r > 0) | |
256 | continue; | |
257 | ||
258 | r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=", &realtime, &realtime_len); | |
259 | if (r < 0) | |
260 | return r; | |
261 | else if (r > 0) | |
262 | continue; | |
263 | ||
264 | r = parse_field(data, length, "_SOURCE_MONOTONIC_TIMESTAMP=", &monotonic, &monotonic_len); | |
265 | if (r < 0) | |
266 | return r; | |
267 | else if (r > 0) | |
268 | continue; | |
269 | ||
270 | r = parse_field(data, length, "MESSAGE=", &message, &message_len); | |
271 | if (r < 0) | |
272 | return r; | |
273 | } | |
274 | ||
275 | if (r < 0) | |
276 | return log_error_errno(r, "Failed to get journal fields: %m"); | |
277 | ||
278 | if (!message) { | |
279 | log_debug("Skipping message without MESSAGE= field."); | |
280 | return 0; | |
281 | } | |
282 | ||
283 | if (!(flags & OUTPUT_SHOW_ALL)) | |
284 | strip_tab_ansi(&message, &message_len); | |
285 | ||
286 | if (priority_len == 1 && *priority >= '0' && *priority <= '7') | |
287 | p = *priority - '0'; | |
288 | ||
289 | if (mode == OUTPUT_SHORT_MONOTONIC) { | |
290 | uint64_t t; | |
291 | sd_id128_t boot_id; | |
292 | ||
293 | r = -ENOENT; | |
294 | ||
295 | if (monotonic) | |
296 | r = safe_atou64(monotonic, &t); | |
297 | ||
298 | if (r < 0) | |
299 | r = sd_journal_get_monotonic_usec(j, &t, &boot_id); | |
300 | ||
301 | if (r < 0) | |
302 | return log_error_errno(r, "Failed to get monotonic timestamp: %m"); | |
303 | ||
304 | fprintf(f, "[%5llu.%06llu]", | |
305 | (unsigned long long) (t / USEC_PER_SEC), | |
306 | (unsigned long long) (t % USEC_PER_SEC)); | |
307 | ||
308 | n += 1 + 5 + 1 + 6 + 1; | |
309 | ||
310 | } else { | |
311 | char buf[64]; | |
312 | uint64_t x; | |
313 | time_t t; | |
314 | struct tm tm; | |
315 | struct tm *(*gettime_r)(const time_t *, struct tm *); | |
316 | ||
317 | r = -ENOENT; | |
318 | gettime_r = (flags & OUTPUT_UTC) ? gmtime_r : localtime_r; | |
319 | ||
320 | if (realtime) | |
321 | r = safe_atou64(realtime, &x); | |
322 | ||
323 | if (r < 0) | |
324 | r = sd_journal_get_realtime_usec(j, &x); | |
325 | ||
326 | if (r < 0) | |
327 | return log_error_errno(r, "Failed to get realtime timestamp: %m"); | |
328 | ||
329 | t = (time_t) (x / USEC_PER_SEC); | |
330 | ||
331 | switch(mode) { | |
332 | case OUTPUT_SHORT_ISO: | |
333 | r = strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S%z", gettime_r(&t, &tm)); | |
334 | break; | |
335 | case OUTPUT_SHORT_PRECISE: | |
336 | r = strftime(buf, sizeof(buf), "%b %d %H:%M:%S", gettime_r(&t, &tm)); | |
337 | if (r > 0) | |
338 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
339 | ".%06llu", (unsigned long long) (x % USEC_PER_SEC)); | |
340 | break; | |
341 | default: | |
342 | r = strftime(buf, sizeof(buf), "%b %d %H:%M:%S", gettime_r(&t, &tm)); | |
343 | } | |
344 | ||
345 | if (r <= 0) { | |
346 | log_error("Failed to format time."); | |
347 | return -EINVAL; | |
348 | } | |
349 | ||
350 | fputs(buf, f); | |
351 | n += strlen(buf); | |
352 | } | |
353 | ||
354 | if (hostname && shall_print(hostname, hostname_len, flags)) { | |
355 | fprintf(f, " %.*s", (int) hostname_len, hostname); | |
356 | n += hostname_len + 1; | |
357 | } | |
358 | ||
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); | |
364 | n += comm_len + 1; | |
365 | } else | |
366 | fputs(" unknown", f); | |
367 | ||
368 | if (pid && shall_print(pid, pid_len, flags)) { | |
369 | fprintf(f, "[%.*s]", (int) pid_len, pid); | |
370 | n += pid_len + 2; | |
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; | |
374 | } | |
375 | ||
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)); | |
379 | } else { | |
380 | fputs(": ", f); | |
381 | ellipsized |= | |
382 | print_multiline(f, n + 2, n_columns, flags, p, message, message_len); | |
383 | } | |
384 | ||
385 | if (flags & OUTPUT_CATALOG) | |
386 | print_catalog(f, j); | |
387 | ||
388 | return ellipsized; | |
389 | } | |
390 | ||
391 | static int output_verbose( | |
392 | FILE *f, | |
393 | sd_journal *j, | |
394 | OutputMode mode, | |
395 | unsigned n_columns, | |
396 | OutputFlags flags) { | |
397 | ||
398 | const void *data; | |
399 | size_t length; | |
400 | _cleanup_free_ char *cursor = NULL; | |
401 | uint64_t realtime; | |
402 | char ts[FORMAT_TIMESTAMP_MAX + 7]; | |
403 | int r; | |
404 | ||
405 | assert(f); | |
406 | assert(j); | |
407 | ||
408 | sd_journal_set_data_threshold(j, 0); | |
409 | ||
410 | r = sd_journal_get_data(j, "_SOURCE_REALTIME_TIMESTAMP", &data, &length); | |
411 | if (r == -ENOENT) | |
412 | log_debug("Source realtime timestamp not found"); | |
413 | else if (r < 0) | |
414 | return log_full_errno(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR, r, "Failed to get source realtime timestamp: %m"); | |
415 | else { | |
416 | _cleanup_free_ char *value = NULL; | |
417 | size_t size; | |
418 | ||
419 | r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=", &value, &size); | |
420 | if (r < 0) | |
421 | log_debug_errno(r, "_SOURCE_REALTIME_TIMESTAMP invalid: %m"); | |
422 | else { | |
423 | r = safe_atou64(value, &realtime); | |
424 | if (r < 0) | |
425 | log_debug_errno(r, "Failed to parse realtime timestamp: %m"); | |
426 | } | |
427 | } | |
428 | ||
429 | if (r < 0) { | |
430 | r = sd_journal_get_realtime_usec(j, &realtime); | |
431 | if (r < 0) | |
432 | return log_full_errno(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR, r, "Failed to get realtime timestamp: %m"); | |
433 | } | |
434 | ||
435 | r = sd_journal_get_cursor(j, &cursor); | |
436 | if (r < 0) | |
437 | return log_error_errno(r, "Failed to get cursor: %m"); | |
438 | ||
439 | fprintf(f, "%s [%s]\n", | |
440 | flags & OUTPUT_UTC ? | |
441 | format_timestamp_us_utc(ts, sizeof(ts), realtime) : | |
442 | format_timestamp_us(ts, sizeof(ts), realtime), | |
443 | cursor); | |
444 | ||
445 | JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) { | |
446 | const char *c; | |
447 | int fieldlen; | |
448 | const char *on = "", *off = ""; | |
449 | ||
450 | c = memchr(data, '=', length); | |
451 | if (!c) { | |
452 | log_error("Invalid field."); | |
453 | return -EINVAL; | |
454 | } | |
455 | fieldlen = c - (const char*) data; | |
456 | ||
457 | if (flags & OUTPUT_COLOR && startswith(data, "MESSAGE=")) { | |
458 | on = ANSI_HIGHLIGHT_ON; | |
459 | off = ANSI_HIGHLIGHT_OFF; | |
460 | } | |
461 | ||
462 | if (flags & OUTPUT_SHOW_ALL || | |
463 | (((length < PRINT_CHAR_THRESHOLD) || flags & OUTPUT_FULL_WIDTH) | |
464 | && utf8_is_printable(data, length))) { | |
465 | fprintf(f, " %s%.*s=", on, fieldlen, (const char*)data); | |
466 | print_multiline(f, 4 + fieldlen + 1, 0, OUTPUT_FULL_WIDTH, 0, c + 1, length - fieldlen - 1); | |
467 | fputs(off, f); | |
468 | } else { | |
469 | char bytes[FORMAT_BYTES_MAX]; | |
470 | ||
471 | fprintf(f, " %s%.*s=[%s blob data]%s\n", | |
472 | on, | |
473 | (int) (c - (const char*) data), | |
474 | (const char*) data, | |
475 | format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1), | |
476 | off); | |
477 | } | |
478 | } | |
479 | ||
480 | if (r < 0) | |
481 | return r; | |
482 | ||
483 | if (flags & OUTPUT_CATALOG) | |
484 | print_catalog(f, j); | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
489 | static int output_export( | |
490 | FILE *f, | |
491 | sd_journal *j, | |
492 | OutputMode mode, | |
493 | unsigned n_columns, | |
494 | OutputFlags flags) { | |
495 | ||
496 | sd_id128_t boot_id; | |
497 | char sid[33]; | |
498 | int r; | |
499 | usec_t realtime, monotonic; | |
500 | _cleanup_free_ char *cursor = NULL; | |
501 | const void *data; | |
502 | size_t length; | |
503 | ||
504 | assert(j); | |
505 | ||
506 | sd_journal_set_data_threshold(j, 0); | |
507 | ||
508 | r = sd_journal_get_realtime_usec(j, &realtime); | |
509 | if (r < 0) | |
510 | return log_error_errno(r, "Failed to get realtime timestamp: %m"); | |
511 | ||
512 | r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id); | |
513 | if (r < 0) | |
514 | return log_error_errno(r, "Failed to get monotonic timestamp: %m"); | |
515 | ||
516 | r = sd_journal_get_cursor(j, &cursor); | |
517 | if (r < 0) | |
518 | return log_error_errno(r, "Failed to get cursor: %m"); | |
519 | ||
520 | fprintf(f, | |
521 | "__CURSOR=%s\n" | |
522 | "__REALTIME_TIMESTAMP="USEC_FMT"\n" | |
523 | "__MONOTONIC_TIMESTAMP="USEC_FMT"\n" | |
524 | "_BOOT_ID=%s\n", | |
525 | cursor, | |
526 | realtime, | |
527 | monotonic, | |
528 | sd_id128_to_string(boot_id, sid)); | |
529 | ||
530 | JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) { | |
531 | ||
532 | /* We already printed the boot id, from the data in | |
533 | * the header, hence let's suppress it here */ | |
534 | if (length >= 9 && | |
535 | startswith(data, "_BOOT_ID=")) | |
536 | continue; | |
537 | ||
538 | if (utf8_is_printable_newline(data, length, false)) | |
539 | fwrite(data, length, 1, f); | |
540 | else { | |
541 | const char *c; | |
542 | uint64_t le64; | |
543 | ||
544 | c = memchr(data, '=', length); | |
545 | if (!c) { | |
546 | log_error("Invalid field."); | |
547 | return -EINVAL; | |
548 | } | |
549 | ||
550 | fwrite(data, c - (const char*) data, 1, f); | |
551 | fputc('\n', f); | |
552 | le64 = htole64(length - (c - (const char*) data) - 1); | |
553 | fwrite(&le64, sizeof(le64), 1, f); | |
554 | fwrite(c + 1, length - (c - (const char*) data) - 1, 1, f); | |
555 | } | |
556 | ||
557 | fputc('\n', f); | |
558 | } | |
559 | ||
560 | if (r < 0) | |
561 | return r; | |
562 | ||
563 | fputc('\n', f); | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | void json_escape( | |
569 | FILE *f, | |
570 | const char* p, | |
571 | size_t l, | |
572 | OutputFlags flags) { | |
573 | ||
574 | assert(f); | |
575 | assert(p); | |
576 | ||
577 | if (!(flags & OUTPUT_SHOW_ALL) && l >= JSON_THRESHOLD) | |
578 | fputs("null", f); | |
579 | ||
580 | else if (!utf8_is_printable(p, l)) { | |
581 | bool not_first = false; | |
582 | ||
583 | fputs("[ ", f); | |
584 | ||
585 | while (l > 0) { | |
586 | if (not_first) | |
587 | fprintf(f, ", %u", (uint8_t) *p); | |
588 | else { | |
589 | not_first = true; | |
590 | fprintf(f, "%u", (uint8_t) *p); | |
591 | } | |
592 | ||
593 | p++; | |
594 | l--; | |
595 | } | |
596 | ||
597 | fputs(" ]", f); | |
598 | } else { | |
599 | fputc('\"', f); | |
600 | ||
601 | while (l > 0) { | |
602 | if (*p == '"' || *p == '\\') { | |
603 | fputc('\\', f); | |
604 | fputc(*p, f); | |
605 | } else if (*p == '\n') | |
606 | fputs("\\n", f); | |
607 | else if ((uint8_t) *p < ' ') | |
608 | fprintf(f, "\\u%04x", (uint8_t) *p); | |
609 | else | |
610 | fputc(*p, f); | |
611 | ||
612 | p++; | |
613 | l--; | |
614 | } | |
615 | ||
616 | fputc('\"', f); | |
617 | } | |
618 | } | |
619 | ||
620 | static int output_json( | |
621 | FILE *f, | |
622 | sd_journal *j, | |
623 | OutputMode mode, | |
624 | unsigned n_columns, | |
625 | OutputFlags flags) { | |
626 | ||
627 | uint64_t realtime, monotonic; | |
628 | _cleanup_free_ char *cursor = NULL; | |
629 | const void *data; | |
630 | size_t length; | |
631 | sd_id128_t boot_id; | |
632 | char sid[33], *k; | |
633 | int r; | |
634 | Hashmap *h = NULL; | |
635 | bool done, separator; | |
636 | ||
637 | assert(j); | |
638 | ||
639 | sd_journal_set_data_threshold(j, flags & OUTPUT_SHOW_ALL ? 0 : JSON_THRESHOLD); | |
640 | ||
641 | r = sd_journal_get_realtime_usec(j, &realtime); | |
642 | if (r < 0) | |
643 | return log_error_errno(r, "Failed to get realtime timestamp: %m"); | |
644 | ||
645 | r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id); | |
646 | if (r < 0) | |
647 | return log_error_errno(r, "Failed to get monotonic timestamp: %m"); | |
648 | ||
649 | r = sd_journal_get_cursor(j, &cursor); | |
650 | if (r < 0) | |
651 | return log_error_errno(r, "Failed to get cursor: %m"); | |
652 | ||
653 | if (mode == OUTPUT_JSON_PRETTY) | |
654 | fprintf(f, | |
655 | "{\n" | |
656 | "\t\"__CURSOR\" : \"%s\",\n" | |
657 | "\t\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\",\n" | |
658 | "\t\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\",\n" | |
659 | "\t\"_BOOT_ID\" : \"%s\"", | |
660 | cursor, | |
661 | realtime, | |
662 | monotonic, | |
663 | sd_id128_to_string(boot_id, sid)); | |
664 | else { | |
665 | if (mode == OUTPUT_JSON_SSE) | |
666 | fputs("data: ", f); | |
667 | ||
668 | fprintf(f, | |
669 | "{ \"__CURSOR\" : \"%s\", " | |
670 | "\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\", " | |
671 | "\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\", " | |
672 | "\"_BOOT_ID\" : \"%s\"", | |
673 | cursor, | |
674 | realtime, | |
675 | monotonic, | |
676 | sd_id128_to_string(boot_id, sid)); | |
677 | } | |
678 | ||
679 | h = hashmap_new(&string_hash_ops); | |
680 | if (!h) | |
681 | return log_oom(); | |
682 | ||
683 | /* First round, iterate through the entry and count how often each field appears */ | |
684 | JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) { | |
685 | const char *eq; | |
686 | char *n; | |
687 | unsigned u; | |
688 | ||
689 | if (length >= 9 && | |
690 | memcmp(data, "_BOOT_ID=", 9) == 0) | |
691 | continue; | |
692 | ||
693 | eq = memchr(data, '=', length); | |
694 | if (!eq) | |
695 | continue; | |
696 | ||
697 | n = strndup(data, eq - (const char*) data); | |
698 | if (!n) { | |
699 | r = log_oom(); | |
700 | goto finish; | |
701 | } | |
702 | ||
703 | u = PTR_TO_UINT(hashmap_get(h, n)); | |
704 | if (u == 0) { | |
705 | r = hashmap_put(h, n, UINT_TO_PTR(1)); | |
706 | if (r < 0) { | |
707 | free(n); | |
708 | log_oom(); | |
709 | goto finish; | |
710 | } | |
711 | } else { | |
712 | r = hashmap_update(h, n, UINT_TO_PTR(u + 1)); | |
713 | free(n); | |
714 | if (r < 0) { | |
715 | log_oom(); | |
716 | goto finish; | |
717 | } | |
718 | } | |
719 | } | |
720 | ||
721 | if (r < 0) | |
722 | return r; | |
723 | ||
724 | separator = true; | |
725 | do { | |
726 | done = true; | |
727 | ||
728 | SD_JOURNAL_FOREACH_DATA(j, data, length) { | |
729 | const char *eq; | |
730 | char *kk, *n; | |
731 | size_t m; | |
732 | unsigned u; | |
733 | ||
734 | /* We already printed the boot id, from the data in | |
735 | * the header, hence let's suppress it here */ | |
736 | if (length >= 9 && | |
737 | memcmp(data, "_BOOT_ID=", 9) == 0) | |
738 | continue; | |
739 | ||
740 | eq = memchr(data, '=', length); | |
741 | if (!eq) | |
742 | continue; | |
743 | ||
744 | if (separator) { | |
745 | if (mode == OUTPUT_JSON_PRETTY) | |
746 | fputs(",\n\t", f); | |
747 | else | |
748 | fputs(", ", f); | |
749 | } | |
750 | ||
751 | m = eq - (const char*) data; | |
752 | ||
753 | n = strndup(data, m); | |
754 | if (!n) { | |
755 | r = log_oom(); | |
756 | goto finish; | |
757 | } | |
758 | ||
759 | u = PTR_TO_UINT(hashmap_get2(h, n, (void**) &kk)); | |
760 | if (u == 0) { | |
761 | /* We already printed this, let's jump to the next */ | |
762 | free(n); | |
763 | separator = false; | |
764 | ||
765 | continue; | |
766 | } else if (u == 1) { | |
767 | /* Field only appears once, output it directly */ | |
768 | ||
769 | json_escape(f, data, m, flags); | |
770 | fputs(" : ", f); | |
771 | ||
772 | json_escape(f, eq + 1, length - m - 1, flags); | |
773 | ||
774 | hashmap_remove(h, n); | |
775 | free(kk); | |
776 | free(n); | |
777 | ||
778 | separator = true; | |
779 | ||
780 | continue; | |
781 | ||
782 | } else { | |
783 | /* Field appears multiple times, output it as array */ | |
784 | json_escape(f, data, m, flags); | |
785 | fputs(" : [ ", f); | |
786 | json_escape(f, eq + 1, length - m - 1, flags); | |
787 | ||
788 | /* Iterate through the end of the list */ | |
789 | ||
790 | while (sd_journal_enumerate_data(j, &data, &length) > 0) { | |
791 | if (length < m + 1) | |
792 | continue; | |
793 | ||
794 | if (memcmp(data, n, m) != 0) | |
795 | continue; | |
796 | ||
797 | if (((const char*) data)[m] != '=') | |
798 | continue; | |
799 | ||
800 | fputs(", ", f); | |
801 | json_escape(f, (const char*) data + m + 1, length - m - 1, flags); | |
802 | } | |
803 | ||
804 | fputs(" ]", f); | |
805 | ||
806 | hashmap_remove(h, n); | |
807 | free(kk); | |
808 | free(n); | |
809 | ||
810 | /* Iterate data fields form the beginning */ | |
811 | done = false; | |
812 | separator = true; | |
813 | ||
814 | break; | |
815 | } | |
816 | } | |
817 | ||
818 | } while (!done); | |
819 | ||
820 | if (mode == OUTPUT_JSON_PRETTY) | |
821 | fputs("\n}\n", f); | |
822 | else if (mode == OUTPUT_JSON_SSE) | |
823 | fputs("}\n\n", f); | |
824 | else | |
825 | fputs(" }\n", f); | |
826 | ||
827 | r = 0; | |
828 | ||
829 | finish: | |
830 | while ((k = hashmap_steal_first_key(h))) | |
831 | free(k); | |
832 | ||
833 | hashmap_free(h); | |
834 | ||
835 | return r; | |
836 | } | |
837 | ||
838 | static int output_cat( | |
839 | FILE *f, | |
840 | sd_journal *j, | |
841 | OutputMode mode, | |
842 | unsigned n_columns, | |
843 | OutputFlags flags) { | |
844 | ||
845 | const void *data; | |
846 | size_t l; | |
847 | int r; | |
848 | ||
849 | assert(j); | |
850 | assert(f); | |
851 | ||
852 | sd_journal_set_data_threshold(j, 0); | |
853 | ||
854 | r = sd_journal_get_data(j, "MESSAGE", &data, &l); | |
855 | if (r < 0) { | |
856 | /* An entry without MESSAGE=? */ | |
857 | if (r == -ENOENT) | |
858 | return 0; | |
859 | ||
860 | return log_error_errno(r, "Failed to get data: %m"); | |
861 | } | |
862 | ||
863 | assert(l >= 8); | |
864 | ||
865 | fwrite((const char*) data + 8, 1, l - 8, f); | |
866 | fputc('\n', f); | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
871 | static int (*output_funcs[_OUTPUT_MODE_MAX])( | |
872 | FILE *f, | |
873 | sd_journal*j, | |
874 | OutputMode mode, | |
875 | unsigned n_columns, | |
876 | OutputFlags flags) = { | |
877 | ||
878 | [OUTPUT_SHORT] = output_short, | |
879 | [OUTPUT_SHORT_ISO] = output_short, | |
880 | [OUTPUT_SHORT_PRECISE] = output_short, | |
881 | [OUTPUT_SHORT_MONOTONIC] = output_short, | |
882 | [OUTPUT_VERBOSE] = output_verbose, | |
883 | [OUTPUT_EXPORT] = output_export, | |
884 | [OUTPUT_JSON] = output_json, | |
885 | [OUTPUT_JSON_PRETTY] = output_json, | |
886 | [OUTPUT_JSON_SSE] = output_json, | |
887 | [OUTPUT_CAT] = output_cat | |
888 | }; | |
889 | ||
890 | int output_journal( | |
891 | FILE *f, | |
892 | sd_journal *j, | |
893 | OutputMode mode, | |
894 | unsigned n_columns, | |
895 | OutputFlags flags, | |
896 | bool *ellipsized) { | |
897 | ||
898 | int ret; | |
899 | assert(mode >= 0); | |
900 | assert(mode < _OUTPUT_MODE_MAX); | |
901 | ||
902 | if (n_columns <= 0) | |
903 | n_columns = columns(); | |
904 | ||
905 | ret = output_funcs[mode](f, j, mode, n_columns, flags); | |
906 | fflush(stdout); | |
907 | ||
908 | if (ellipsized && ret > 0) | |
909 | *ellipsized = true; | |
910 | ||
911 | return ret; | |
912 | } | |
913 | ||
914 | static int maybe_print_begin_newline(FILE *f, OutputFlags *flags) { | |
915 | assert(f); | |
916 | assert(flags); | |
917 | ||
918 | if (!(*flags & OUTPUT_BEGIN_NEWLINE)) | |
919 | return 0; | |
920 | ||
921 | /* Print a beginning new line if that's request, but only once | |
922 | * on the first line we print. */ | |
923 | ||
924 | fputc('\n', f); | |
925 | *flags &= ~OUTPUT_BEGIN_NEWLINE; | |
926 | return 0; | |
927 | } | |
928 | ||
929 | static int show_journal(FILE *f, | |
930 | sd_journal *j, | |
931 | OutputMode mode, | |
932 | unsigned n_columns, | |
933 | usec_t not_before, | |
934 | unsigned how_many, | |
935 | OutputFlags flags, | |
936 | bool *ellipsized) { | |
937 | ||
938 | int r; | |
939 | unsigned line = 0; | |
940 | bool need_seek = false; | |
941 | int warn_cutoff = flags & OUTPUT_WARN_CUTOFF; | |
942 | ||
943 | assert(j); | |
944 | assert(mode >= 0); | |
945 | assert(mode < _OUTPUT_MODE_MAX); | |
946 | ||
947 | /* Seek to end */ | |
948 | r = sd_journal_seek_tail(j); | |
949 | if (r < 0) | |
950 | return log_error_errno(r, "Failed to seek to tail: %m"); | |
951 | ||
952 | r = sd_journal_previous_skip(j, how_many); | |
953 | if (r < 0) | |
954 | return log_error_errno(r, "Failed to skip previous: %m"); | |
955 | ||
956 | for (;;) { | |
957 | for (;;) { | |
958 | usec_t usec; | |
959 | ||
960 | if (need_seek) { | |
961 | r = sd_journal_next(j); | |
962 | if (r < 0) | |
963 | return log_error_errno(r, "Failed to iterate through journal: %m"); | |
964 | } | |
965 | ||
966 | if (r == 0) | |
967 | break; | |
968 | ||
969 | need_seek = true; | |
970 | ||
971 | if (not_before > 0) { | |
972 | r = sd_journal_get_monotonic_usec(j, &usec, NULL); | |
973 | ||
974 | /* -ESTALE is returned if the | |
975 | timestamp is not from this boot */ | |
976 | if (r == -ESTALE) | |
977 | continue; | |
978 | else if (r < 0) | |
979 | return log_error_errno(r, "Failed to get journal time: %m"); | |
980 | ||
981 | if (usec < not_before) | |
982 | continue; | |
983 | } | |
984 | ||
985 | line ++; | |
986 | maybe_print_begin_newline(f, &flags); | |
987 | ||
988 | r = output_journal(f, j, mode, n_columns, flags, ellipsized); | |
989 | if (r < 0) | |
990 | return r; | |
991 | } | |
992 | ||
993 | if (warn_cutoff && line < how_many && not_before > 0) { | |
994 | sd_id128_t boot_id; | |
995 | usec_t cutoff = 0; | |
996 | ||
997 | /* Check whether the cutoff line is too early */ | |
998 | ||
999 | r = sd_id128_get_boot(&boot_id); | |
1000 | if (r < 0) | |
1001 | return log_error_errno(r, "Failed to get boot id: %m"); | |
1002 | ||
1003 | r = sd_journal_get_cutoff_monotonic_usec(j, boot_id, &cutoff, NULL); | |
1004 | if (r < 0) | |
1005 | return log_error_errno(r, "Failed to get journal cutoff time: %m"); | |
1006 | ||
1007 | if (r > 0 && not_before < cutoff) { | |
1008 | maybe_print_begin_newline(f, &flags); | |
1009 | fprintf(f, "Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.\n"); | |
1010 | } | |
1011 | ||
1012 | warn_cutoff = false; | |
1013 | } | |
1014 | ||
1015 | if (!(flags & OUTPUT_FOLLOW)) | |
1016 | break; | |
1017 | ||
1018 | r = sd_journal_wait(j, USEC_INFINITY); | |
1019 | if (r < 0) | |
1020 | return log_error_errno(r, "Failed to wait for journal: %m"); | |
1021 | ||
1022 | } | |
1023 | ||
1024 | return 0; | |
1025 | } | |
1026 | ||
1027 | int add_matches_for_unit(sd_journal *j, const char *unit) { | |
1028 | int r; | |
1029 | char *m1, *m2, *m3, *m4; | |
1030 | ||
1031 | assert(j); | |
1032 | assert(unit); | |
1033 | ||
1034 | m1 = strjoina("_SYSTEMD_UNIT=", unit); | |
1035 | m2 = strjoina("COREDUMP_UNIT=", unit); | |
1036 | m3 = strjoina("UNIT=", unit); | |
1037 | m4 = strjoina("OBJECT_SYSTEMD_UNIT=", unit); | |
1038 | ||
1039 | (void)( | |
1040 | /* Look for messages from the service itself */ | |
1041 | (r = sd_journal_add_match(j, m1, 0)) || | |
1042 | ||
1043 | /* Look for coredumps of the service */ | |
1044 | (r = sd_journal_add_disjunction(j)) || | |
1045 | (r = sd_journal_add_match(j, "MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1", 0)) || | |
1046 | (r = sd_journal_add_match(j, "_UID=0", 0)) || | |
1047 | (r = sd_journal_add_match(j, m2, 0)) || | |
1048 | ||
1049 | /* Look for messages from PID 1 about this service */ | |
1050 | (r = sd_journal_add_disjunction(j)) || | |
1051 | (r = sd_journal_add_match(j, "_PID=1", 0)) || | |
1052 | (r = sd_journal_add_match(j, m3, 0)) || | |
1053 | ||
1054 | /* Look for messages from authorized daemons about this service */ | |
1055 | (r = sd_journal_add_disjunction(j)) || | |
1056 | (r = sd_journal_add_match(j, "_UID=0", 0)) || | |
1057 | (r = sd_journal_add_match(j, m4, 0)) | |
1058 | ); | |
1059 | ||
1060 | if (r == 0 && endswith(unit, ".slice")) { | |
1061 | char *m5 = strappend("_SYSTEMD_SLICE=", unit); | |
1062 | ||
1063 | /* Show all messages belonging to a slice */ | |
1064 | (void)( | |
1065 | (r = sd_journal_add_disjunction(j)) || | |
1066 | (r = sd_journal_add_match(j, m5, 0)) | |
1067 | ); | |
1068 | } | |
1069 | ||
1070 | return r; | |
1071 | } | |
1072 | ||
1073 | int add_matches_for_user_unit(sd_journal *j, const char *unit, uid_t uid) { | |
1074 | int r; | |
1075 | char *m1, *m2, *m3, *m4; | |
1076 | char muid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)]; | |
1077 | ||
1078 | assert(j); | |
1079 | assert(unit); | |
1080 | ||
1081 | m1 = strjoina("_SYSTEMD_USER_UNIT=", unit); | |
1082 | m2 = strjoina("USER_UNIT=", unit); | |
1083 | m3 = strjoina("COREDUMP_USER_UNIT=", unit); | |
1084 | m4 = strjoina("OBJECT_SYSTEMD_USER_UNIT=", unit); | |
1085 | sprintf(muid, "_UID="UID_FMT, uid); | |
1086 | ||
1087 | (void) ( | |
1088 | /* Look for messages from the user service itself */ | |
1089 | (r = sd_journal_add_match(j, m1, 0)) || | |
1090 | (r = sd_journal_add_match(j, muid, 0)) || | |
1091 | ||
1092 | /* Look for messages from systemd about this service */ | |
1093 | (r = sd_journal_add_disjunction(j)) || | |
1094 | (r = sd_journal_add_match(j, m2, 0)) || | |
1095 | (r = sd_journal_add_match(j, muid, 0)) || | |
1096 | ||
1097 | /* Look for coredumps of the service */ | |
1098 | (r = sd_journal_add_disjunction(j)) || | |
1099 | (r = sd_journal_add_match(j, m3, 0)) || | |
1100 | (r = sd_journal_add_match(j, muid, 0)) || | |
1101 | (r = sd_journal_add_match(j, "_UID=0", 0)) || | |
1102 | ||
1103 | /* Look for messages from authorized daemons about this service */ | |
1104 | (r = sd_journal_add_disjunction(j)) || | |
1105 | (r = sd_journal_add_match(j, m4, 0)) || | |
1106 | (r = sd_journal_add_match(j, muid, 0)) || | |
1107 | (r = sd_journal_add_match(j, "_UID=0", 0)) | |
1108 | ); | |
1109 | ||
1110 | if (r == 0 && endswith(unit, ".slice")) { | |
1111 | char *m5 = strappend("_SYSTEMD_SLICE=", unit); | |
1112 | ||
1113 | /* Show all messages belonging to a slice */ | |
1114 | (void)( | |
1115 | (r = sd_journal_add_disjunction(j)) || | |
1116 | (r = sd_journal_add_match(j, m5, 0)) || | |
1117 | (r = sd_journal_add_match(j, muid, 0)) | |
1118 | ); | |
1119 | } | |
1120 | ||
1121 | return r; | |
1122 | } | |
1123 | ||
1124 | static int get_boot_id_for_machine(const char *machine, sd_id128_t *boot_id) { | |
1125 | _cleanup_close_pair_ int pair[2] = { -1, -1 }; | |
1126 | _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, rootfd = -1; | |
1127 | pid_t pid, child; | |
1128 | siginfo_t si; | |
1129 | char buf[37]; | |
1130 | ssize_t k; | |
1131 | int r; | |
1132 | ||
1133 | assert(machine); | |
1134 | assert(boot_id); | |
1135 | ||
1136 | if (!machine_name_is_valid(machine)) | |
1137 | return -EINVAL; | |
1138 | ||
1139 | r = container_get_leader(machine, &pid); | |
1140 | if (r < 0) | |
1141 | return r; | |
1142 | ||
1143 | r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, NULL, &rootfd); | |
1144 | if (r < 0) | |
1145 | return r; | |
1146 | ||
1147 | if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0) | |
1148 | return -errno; | |
1149 | ||
1150 | child = fork(); | |
1151 | if (child < 0) | |
1152 | return -errno; | |
1153 | ||
1154 | if (child == 0) { | |
1155 | int fd; | |
1156 | ||
1157 | pair[0] = safe_close(pair[0]); | |
1158 | ||
1159 | r = namespace_enter(pidnsfd, mntnsfd, -1, -1, rootfd); | |
1160 | if (r < 0) | |
1161 | _exit(EXIT_FAILURE); | |
1162 | ||
1163 | fd = open("/proc/sys/kernel/random/boot_id", O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
1164 | if (fd < 0) | |
1165 | _exit(EXIT_FAILURE); | |
1166 | ||
1167 | r = loop_read_exact(fd, buf, 36, false); | |
1168 | safe_close(fd); | |
1169 | if (r < 0) | |
1170 | _exit(EXIT_FAILURE); | |
1171 | ||
1172 | k = send(pair[1], buf, 36, MSG_NOSIGNAL); | |
1173 | if (k != 36) | |
1174 | _exit(EXIT_FAILURE); | |
1175 | ||
1176 | _exit(EXIT_SUCCESS); | |
1177 | } | |
1178 | ||
1179 | pair[1] = safe_close(pair[1]); | |
1180 | ||
1181 | r = wait_for_terminate(child, &si); | |
1182 | if (r < 0 || si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS) | |
1183 | return r < 0 ? r : -EIO; | |
1184 | ||
1185 | k = recv(pair[0], buf, 36, 0); | |
1186 | if (k != 36) | |
1187 | return -EIO; | |
1188 | ||
1189 | buf[36] = 0; | |
1190 | r = sd_id128_from_string(buf, boot_id); | |
1191 | if (r < 0) | |
1192 | return r; | |
1193 | ||
1194 | return 0; | |
1195 | } | |
1196 | ||
1197 | int add_match_this_boot(sd_journal *j, const char *machine) { | |
1198 | char match[9+32+1] = "_BOOT_ID="; | |
1199 | sd_id128_t boot_id; | |
1200 | int r; | |
1201 | ||
1202 | assert(j); | |
1203 | ||
1204 | if (machine) { | |
1205 | r = get_boot_id_for_machine(machine, &boot_id); | |
1206 | if (r < 0) | |
1207 | return log_error_errno(r, "Failed to get boot id of container %s: %m", machine); | |
1208 | } else { | |
1209 | r = sd_id128_get_boot(&boot_id); | |
1210 | if (r < 0) | |
1211 | return log_error_errno(r, "Failed to get boot id: %m"); | |
1212 | } | |
1213 | ||
1214 | sd_id128_to_string(boot_id, match + 9); | |
1215 | r = sd_journal_add_match(j, match, strlen(match)); | |
1216 | if (r < 0) | |
1217 | return log_error_errno(r, "Failed to add match: %m"); | |
1218 | ||
1219 | r = sd_journal_add_conjunction(j); | |
1220 | if (r < 0) | |
1221 | return log_error_errno(r, "Failed to add conjunction: %m"); | |
1222 | ||
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | int show_journal_by_unit( | |
1227 | FILE *f, | |
1228 | const char *unit, | |
1229 | OutputMode mode, | |
1230 | unsigned n_columns, | |
1231 | usec_t not_before, | |
1232 | unsigned how_many, | |
1233 | uid_t uid, | |
1234 | OutputFlags flags, | |
1235 | int journal_open_flags, | |
1236 | bool system_unit, | |
1237 | bool *ellipsized) { | |
1238 | ||
1239 | _cleanup_journal_close_ sd_journal*j = NULL; | |
1240 | int r; | |
1241 | ||
1242 | assert(mode >= 0); | |
1243 | assert(mode < _OUTPUT_MODE_MAX); | |
1244 | assert(unit); | |
1245 | ||
1246 | if (how_many <= 0) | |
1247 | return 0; | |
1248 | ||
1249 | r = sd_journal_open(&j, journal_open_flags); | |
1250 | if (r < 0) | |
1251 | return log_error_errno(r, "Failed to open journal: %m"); | |
1252 | ||
1253 | r = add_match_this_boot(j, NULL); | |
1254 | if (r < 0) | |
1255 | return r; | |
1256 | ||
1257 | if (system_unit) | |
1258 | r = add_matches_for_unit(j, unit); | |
1259 | else | |
1260 | r = add_matches_for_user_unit(j, unit, uid); | |
1261 | if (r < 0) | |
1262 | return log_error_errno(r, "Failed to add unit matches: %m"); | |
1263 | ||
1264 | if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { | |
1265 | _cleanup_free_ char *filter; | |
1266 | ||
1267 | filter = journal_make_match_string(j); | |
1268 | if (!filter) | |
1269 | return log_oom(); | |
1270 | ||
1271 | log_debug("Journal filter: %s", filter); | |
1272 | } | |
1273 | ||
1274 | return show_journal(f, j, mode, n_columns, not_before, how_many, flags, ellipsized); | |
1275 | } | |
1276 | ||
1277 | static const char *const output_mode_table[_OUTPUT_MODE_MAX] = { | |
1278 | [OUTPUT_SHORT] = "short", | |
1279 | [OUTPUT_SHORT_ISO] = "short-iso", | |
1280 | [OUTPUT_SHORT_PRECISE] = "short-precise", | |
1281 | [OUTPUT_SHORT_MONOTONIC] = "short-monotonic", | |
1282 | [OUTPUT_VERBOSE] = "verbose", | |
1283 | [OUTPUT_EXPORT] = "export", | |
1284 | [OUTPUT_JSON] = "json", | |
1285 | [OUTPUT_JSON_PRETTY] = "json-pretty", | |
1286 | [OUTPUT_JSON_SSE] = "json-sse", | |
1287 | [OUTPUT_CAT] = "cat" | |
1288 | }; | |
1289 | ||
1290 | DEFINE_STRING_TABLE_LOOKUP(output_mode, OutputMode); |