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87d2c1ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
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 | |
87d2c1ff LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
87d2c1ff | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
87d2c1ff LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
87d2c1ff | 22 | #include <errno.h> |
87d2c1ff | 23 | #include <fcntl.h> |
3fbf9cbb | 24 | #include <stddef.h> |
50f20cfd LP |
25 | #include <unistd.h> |
26 | #include <sys/inotify.h> | |
e02d1cf7 | 27 | #include <sys/poll.h> |
85210bff LP |
28 | #include <sys/vfs.h> |
29 | #include <linux/magic.h> | |
87d2c1ff LP |
30 | |
31 | #include "sd-journal.h" | |
32 | #include "journal-def.h" | |
cec736d2 | 33 | #include "journal-file.h" |
260a2be4 | 34 | #include "hashmap.h" |
cec736d2 | 35 | #include "list.h" |
5302ebe1 | 36 | #include "strv.h" |
9eb977db | 37 | #include "path-util.h" |
de7b95cd | 38 | #include "lookup3.h" |
807e17f0 | 39 | #include "compress.h" |
cf244689 | 40 | #include "journal-internal.h" |
85210bff | 41 | #include "missing.h" |
d4205751 LP |
42 | #include "catalog.h" |
43 | #include "replace-var.h" | |
b6741478 | 44 | #include "fileio.h" |
87d2c1ff | 45 | |
cab8ac60 LP |
46 | #define JOURNAL_FILES_MAX 1024 |
47 | ||
85210bff LP |
48 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
49 | ||
d4205751 LP |
50 | #define REPLACE_VAR_MAX 256 |
51 | ||
93b73b06 LP |
52 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
53 | ||
a65f06bb ZJS |
54 | static bool journal_pid_changed(sd_journal *j) { |
55 | assert(j); | |
56 | ||
57 | /* We don't support people creating a journal object and | |
58 | * keeping it around over a fork(). Let's complain. */ | |
59 | ||
60 | return j->original_pid != getpid(); | |
61 | } | |
62 | ||
6fe391c5 ZJS |
63 | /* We return an error here only if we didn't manage to |
64 | memorize the real error. */ | |
3ac251b8 LP |
65 | static int set_put_error(sd_journal *j, int r) { |
66 | int k; | |
67 | ||
6fe391c5 ZJS |
68 | if (r >= 0) |
69 | return r; | |
70 | ||
3ac251b8 LP |
71 | k = set_ensure_allocated(&j->errors, trivial_hash_func, trivial_compare_func); |
72 | if (k < 0) | |
73 | return k; | |
74 | ||
75 | return set_put(j->errors, INT_TO_PTR(r)); | |
6fe391c5 ZJS |
76 | } |
77 | ||
de190aef | 78 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
79 | Iterator i; |
80 | JournalFile *f; | |
81 | ||
82 | assert(j); | |
83 | ||
84 | j->current_file = NULL; | |
85 | j->current_field = 0; | |
86 | ||
87 | HASHMAP_FOREACH(f, j->files, i) | |
88 | f->current_offset = 0; | |
89 | } | |
90 | ||
de190aef LP |
91 | static void reset_location(sd_journal *j) { |
92 | assert(j); | |
93 | ||
94 | detach_location(j); | |
95 | zero(j->current_location); | |
96 | } | |
97 | ||
a87247dd | 98 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 99 | assert(l); |
a87247dd | 100 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
101 | assert(f); |
102 | assert(o->object.type == OBJECT_ENTRY); | |
103 | ||
a87247dd | 104 | l->type = type; |
de190aef LP |
105 | l->seqnum = le64toh(o->entry.seqnum); |
106 | l->seqnum_id = f->header->seqnum_id; | |
107 | l->realtime = le64toh(o->entry.realtime); | |
108 | l->monotonic = le64toh(o->entry.monotonic); | |
ce3fd7e7 | 109 | l->boot_id = o->entry.boot_id; |
de190aef LP |
110 | l->xor_hash = le64toh(o->entry.xor_hash); |
111 | ||
112 | l->seqnum_set = l->realtime_set = l->monotonic_set = l->xor_hash_set = true; | |
113 | } | |
114 | ||
87011c25 ZJS |
115 | static void set_location(sd_journal *j, LocationType type, JournalFile *f, Object *o, |
116 | direction_t direction, uint64_t offset) { | |
de190aef | 117 | assert(j); |
a87247dd | 118 | assert(type == LOCATION_DISCRETE || type == LOCATION_SEEK); |
de190aef LP |
119 | assert(f); |
120 | assert(o); | |
121 | ||
a87247dd | 122 | init_location(&j->current_location, type, f, o); |
de190aef LP |
123 | |
124 | j->current_file = f; | |
125 | j->current_field = 0; | |
126 | ||
87011c25 | 127 | f->last_direction = direction; |
de190aef LP |
128 | f->current_offset = offset; |
129 | } | |
130 | ||
cbdca852 LP |
131 | static int match_is_valid(const void *data, size_t size) { |
132 | const char *b, *p; | |
133 | ||
134 | assert(data); | |
135 | ||
136 | if (size < 2) | |
137 | return false; | |
138 | ||
139 | if (startswith(data, "__")) | |
140 | return false; | |
141 | ||
142 | b = data; | |
143 | for (p = b; p < b + size; p++) { | |
144 | ||
145 | if (*p == '=') | |
146 | return p > b; | |
147 | ||
148 | if (*p == '_') | |
149 | continue; | |
150 | ||
151 | if (*p >= 'A' && *p <= 'Z') | |
152 | continue; | |
153 | ||
154 | if (*p >= '0' && *p <= '9') | |
155 | continue; | |
156 | ||
157 | return false; | |
158 | } | |
159 | ||
160 | return false; | |
161 | } | |
162 | ||
163 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
164 | const uint8_t *a = _a, *b = _b; |
165 | size_t j; | |
de190aef LP |
166 | |
167 | for (j = 0; j < s && j < t; j++) { | |
168 | ||
de190aef | 169 | if (a[j] != b[j]) |
cbdca852 | 170 | return false; |
de190aef | 171 | |
cbdca852 LP |
172 | if (a[j] == '=') |
173 | return true; | |
de190aef LP |
174 | } |
175 | ||
bc302926 | 176 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
177 | } |
178 | ||
179 | static Match *match_new(Match *p, MatchType t) { | |
180 | Match *m; | |
181 | ||
182 | m = new0(Match, 1); | |
183 | if (!m) | |
184 | return NULL; | |
185 | ||
186 | m->type = t; | |
187 | ||
188 | if (p) { | |
189 | m->parent = p; | |
71fda00f | 190 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
191 | } |
192 | ||
193 | return m; | |
194 | } | |
195 | ||
196 | static void match_free(Match *m) { | |
197 | assert(m); | |
198 | ||
199 | while (m->matches) | |
200 | match_free(m->matches); | |
201 | ||
202 | if (m->parent) | |
71fda00f | 203 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
204 | |
205 | free(m->data); | |
206 | free(m); | |
207 | } | |
208 | ||
209 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 210 | if (!m || m->matches) |
cbdca852 LP |
211 | return; |
212 | ||
213 | match_free(m); | |
de190aef LP |
214 | } |
215 | ||
a5344d2c | 216 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 217 | Match *l3, *l4, *add_here = NULL, *m; |
4fd052ae | 218 | le64_t le_hash; |
87d2c1ff | 219 | |
1ae464e0 TA |
220 | assert_return(j, -EINVAL); |
221 | assert_return(!journal_pid_changed(j), -ECHILD); | |
222 | assert_return(data, -EINVAL); | |
cbdca852 LP |
223 | |
224 | if (size == 0) | |
225 | size = strlen(data); | |
226 | ||
1ae464e0 | 227 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 228 | |
cd34b3c6 HH |
229 | /* level 0: AND term |
230 | * level 1: OR terms | |
231 | * level 2: AND terms | |
232 | * level 3: OR terms | |
233 | * level 4: concrete matches */ | |
cbdca852 LP |
234 | |
235 | if (!j->level0) { | |
cd34b3c6 | 236 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
237 | if (!j->level0) |
238 | return -ENOMEM; | |
239 | } | |
240 | ||
241 | if (!j->level1) { | |
cd34b3c6 | 242 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
243 | if (!j->level1) |
244 | return -ENOMEM; | |
245 | } | |
246 | ||
cd34b3c6 HH |
247 | if (!j->level2) { |
248 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
249 | if (!j->level2) | |
250 | return -ENOMEM; | |
251 | } | |
252 | ||
253 | assert(j->level0->type == MATCH_AND_TERM); | |
254 | assert(j->level1->type == MATCH_OR_TERM); | |
255 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 256 | |
de190aef LP |
257 | le_hash = htole64(hash64(data, size)); |
258 | ||
cd34b3c6 HH |
259 | LIST_FOREACH(matches, l3, j->level2->matches) { |
260 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 261 | |
cd34b3c6 HH |
262 | LIST_FOREACH(matches, l4, l3->matches) { |
263 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 264 | |
cbdca852 LP |
265 | /* Exactly the same match already? Then ignore |
266 | * this addition */ | |
cd34b3c6 HH |
267 | if (l4->le_hash == le_hash && |
268 | l4->size == size && | |
269 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
270 | return 0; |
271 | ||
272 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
273 | if (same_field(data, size, l4->data, l4->size)) { |
274 | add_here = l3; | |
cbdca852 LP |
275 | break; |
276 | } | |
277 | } | |
278 | ||
279 | if (add_here) | |
280 | break; | |
de190aef LP |
281 | } |
282 | ||
cbdca852 | 283 | if (!add_here) { |
cd34b3c6 | 284 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
285 | if (!add_here) |
286 | goto fail; | |
287 | } | |
288 | ||
289 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 290 | if (!m) |
cbdca852 | 291 | goto fail; |
87d2c1ff | 292 | |
cbdca852 | 293 | m->le_hash = le_hash; |
1cc101f1 | 294 | m->size = size; |
cbdca852 LP |
295 | m->data = memdup(data, size); |
296 | if (!m->data) | |
297 | goto fail; | |
298 | ||
299 | detach_location(j); | |
300 | ||
301 | return 0; | |
302 | ||
303 | fail: | |
c5a10d9c ZJS |
304 | match_free_if_empty(add_here); |
305 | match_free_if_empty(j->level2); | |
306 | match_free_if_empty(j->level1); | |
307 | match_free_if_empty(j->level0); | |
cbdca852 LP |
308 | |
309 | return -ENOMEM; | |
310 | } | |
311 | ||
cd34b3c6 | 312 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
313 | assert_return(j, -EINVAL); |
314 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 315 | |
cbdca852 LP |
316 | if (!j->level0) |
317 | return 0; | |
318 | ||
319 | if (!j->level1) | |
320 | return 0; | |
321 | ||
322 | if (!j->level1->matches) | |
323 | return 0; | |
324 | ||
cd34b3c6 HH |
325 | j->level1 = NULL; |
326 | j->level2 = NULL; | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
332 | assert_return(j, -EINVAL); |
333 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
334 | |
335 | if (!j->level0) | |
336 | return 0; | |
337 | ||
338 | if (!j->level1) | |
339 | return 0; | |
340 | ||
341 | if (!j->level2) | |
342 | return 0; | |
343 | ||
344 | if (!j->level2->matches) | |
345 | return 0; | |
cbdca852 | 346 | |
cd34b3c6 | 347 | j->level2 = NULL; |
cbdca852 LP |
348 | return 0; |
349 | } | |
350 | ||
351 | static char *match_make_string(Match *m) { | |
352 | char *p, *r; | |
353 | Match *i; | |
354 | bool enclose = false; | |
355 | ||
356 | if (!m) | |
4ad16808 | 357 | return strdup("none"); |
cbdca852 LP |
358 | |
359 | if (m->type == MATCH_DISCRETE) | |
360 | return strndup(m->data, m->size); | |
361 | ||
362 | p = NULL; | |
363 | LIST_FOREACH(matches, i, m->matches) { | |
364 | char *t, *k; | |
365 | ||
366 | t = match_make_string(i); | |
367 | if (!t) { | |
368 | free(p); | |
369 | return NULL; | |
370 | } | |
371 | ||
372 | if (p) { | |
b7def684 | 373 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t, NULL); |
cbdca852 LP |
374 | free(p); |
375 | free(t); | |
376 | ||
377 | if (!k) | |
378 | return NULL; | |
379 | ||
380 | p = k; | |
381 | ||
382 | enclose = true; | |
bc302926 | 383 | } else |
cbdca852 | 384 | p = t; |
87d2c1ff LP |
385 | } |
386 | ||
cbdca852 | 387 | if (enclose) { |
b7def684 | 388 | r = strjoin("(", p, ")", NULL); |
cbdca852 LP |
389 | free(p); |
390 | return r; | |
391 | } | |
87d2c1ff | 392 | |
cbdca852 LP |
393 | return p; |
394 | } | |
de7b95cd | 395 | |
cbdca852 LP |
396 | char *journal_make_match_string(sd_journal *j) { |
397 | assert(j); | |
8f9b6cd9 | 398 | |
cbdca852 | 399 | return match_make_string(j->level0); |
87d2c1ff LP |
400 | } |
401 | ||
a5344d2c LP |
402 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
403 | if (!j) | |
404 | return; | |
87d2c1ff | 405 | |
cbdca852 LP |
406 | if (j->level0) |
407 | match_free(j->level0); | |
de7b95cd | 408 | |
cd34b3c6 | 409 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 410 | |
de190aef | 411 | detach_location(j); |
87d2c1ff LP |
412 | } |
413 | ||
468b21de | 414 | static int compare_entry_order(JournalFile *af, Object *_ao, |
5afbe712 | 415 | JournalFile *bf, uint64_t bp) { |
87d2c1ff | 416 | |
cec736d2 | 417 | uint64_t a, b; |
468b21de LP |
418 | Object *ao, *bo; |
419 | int r; | |
87d2c1ff | 420 | |
de190aef | 421 | assert(af); |
de190aef | 422 | assert(bf); |
468b21de LP |
423 | assert(_ao); |
424 | ||
425 | /* The mmap cache might invalidate the object from the first | |
426 | * file if we look at the one from the second file. Hence | |
427 | * temporarily copy the header of the first one, and look at | |
428 | * that only. */ | |
429 | ao = alloca(offsetof(EntryObject, items)); | |
430 | memcpy(ao, _ao, offsetof(EntryObject, items)); | |
431 | ||
432 | r = journal_file_move_to_object(bf, OBJECT_ENTRY, bp, &bo); | |
433 | if (r < 0) | |
434 | return strcmp(af->path, bf->path); | |
de190aef | 435 | |
ae2cc8ef | 436 | /* We operate on two different files here, hence we can access |
1cc101f1 LP |
437 | * two objects at the same time, which we normally can't. |
438 | * | |
439 | * If contents and timestamps match, these entries are | |
440 | * identical, even if the seqnum does not match */ | |
441 | ||
442 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id) && | |
443 | ao->entry.monotonic == bo->entry.monotonic && | |
444 | ao->entry.realtime == bo->entry.realtime && | |
445 | ao->entry.xor_hash == bo->entry.xor_hash) | |
446 | return 0; | |
ae2cc8ef | 447 | |
cec736d2 | 448 | if (sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id)) { |
87d2c1ff | 449 | |
cec736d2 LP |
450 | /* If this is from the same seqnum source, compare |
451 | * seqnums */ | |
452 | a = le64toh(ao->entry.seqnum); | |
453 | b = le64toh(bo->entry.seqnum); | |
87d2c1ff | 454 | |
ae2cc8ef LP |
455 | if (a < b) |
456 | return -1; | |
457 | if (a > b) | |
458 | return 1; | |
1cc101f1 LP |
459 | |
460 | /* Wow! This is weird, different data but the same | |
461 | * seqnums? Something is borked, but let's make the | |
462 | * best of it and compare by time. */ | |
ae2cc8ef | 463 | } |
87d2c1ff | 464 | |
ae2cc8ef | 465 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id)) { |
87d2c1ff | 466 | |
73e231ab | 467 | /* If the boot id matches, compare monotonic time */ |
cec736d2 LP |
468 | a = le64toh(ao->entry.monotonic); |
469 | b = le64toh(bo->entry.monotonic); | |
87d2c1ff | 470 | |
ae2cc8ef LP |
471 | if (a < b) |
472 | return -1; | |
473 | if (a > b) | |
474 | return 1; | |
87d2c1ff LP |
475 | } |
476 | ||
73e231ab | 477 | /* Otherwise, compare UTC time */ |
ae2cc8ef | 478 | a = le64toh(ao->entry.realtime); |
c4aff78b | 479 | b = le64toh(bo->entry.realtime); |
ae2cc8ef LP |
480 | |
481 | if (a < b) | |
482 | return -1; | |
483 | if (a > b) | |
484 | return 1; | |
485 | ||
486 | /* Finally, compare by contents */ | |
487 | a = le64toh(ao->entry.xor_hash); | |
c4aff78b | 488 | b = le64toh(bo->entry.xor_hash); |
ae2cc8ef LP |
489 | |
490 | if (a < b) | |
491 | return -1; | |
492 | if (a > b) | |
493 | return 1; | |
494 | ||
495 | return 0; | |
87d2c1ff LP |
496 | } |
497 | ||
44a6b1b6 | 498 | _pure_ static int compare_with_location(JournalFile *af, Object *ao, Location *l) { |
de190aef LP |
499 | uint64_t a; |
500 | ||
501 | assert(af); | |
502 | assert(ao); | |
503 | assert(l); | |
a87247dd | 504 | assert(l->type == LOCATION_DISCRETE || l->type == LOCATION_SEEK); |
de190aef LP |
505 | |
506 | if (l->monotonic_set && | |
507 | sd_id128_equal(ao->entry.boot_id, l->boot_id) && | |
508 | l->realtime_set && | |
509 | le64toh(ao->entry.realtime) == l->realtime && | |
510 | l->xor_hash_set && | |
511 | le64toh(ao->entry.xor_hash) == l->xor_hash) | |
512 | return 0; | |
513 | ||
514 | if (l->seqnum_set && | |
515 | sd_id128_equal(af->header->seqnum_id, l->seqnum_id)) { | |
516 | ||
517 | a = le64toh(ao->entry.seqnum); | |
518 | ||
519 | if (a < l->seqnum) | |
520 | return -1; | |
521 | if (a > l->seqnum) | |
522 | return 1; | |
523 | } | |
524 | ||
525 | if (l->monotonic_set && | |
526 | sd_id128_equal(ao->entry.boot_id, l->boot_id)) { | |
527 | ||
528 | a = le64toh(ao->entry.monotonic); | |
529 | ||
530 | if (a < l->monotonic) | |
531 | return -1; | |
532 | if (a > l->monotonic) | |
533 | return 1; | |
534 | } | |
535 | ||
536 | if (l->realtime_set) { | |
537 | ||
538 | a = le64toh(ao->entry.realtime); | |
539 | ||
540 | if (a < l->realtime) | |
541 | return -1; | |
542 | if (a > l->realtime) | |
543 | return 1; | |
544 | } | |
545 | ||
546 | if (l->xor_hash_set) { | |
547 | a = le64toh(ao->entry.xor_hash); | |
548 | ||
549 | if (a < l->xor_hash) | |
550 | return -1; | |
551 | if (a > l->xor_hash) | |
552 | return 1; | |
553 | } | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
cbdca852 LP |
558 | static int next_for_match( |
559 | sd_journal *j, | |
560 | Match *m, | |
561 | JournalFile *f, | |
562 | uint64_t after_offset, | |
563 | direction_t direction, | |
564 | Object **ret, | |
565 | uint64_t *offset) { | |
566 | ||
de7b95cd | 567 | int r; |
cbdca852 LP |
568 | uint64_t np = 0; |
569 | Object *n; | |
de7b95cd LP |
570 | |
571 | assert(j); | |
cbdca852 LP |
572 | assert(m); |
573 | assert(f); | |
de7b95cd | 574 | |
cbdca852 LP |
575 | if (m->type == MATCH_DISCRETE) { |
576 | uint64_t dp; | |
de190aef | 577 | |
cbdca852 | 578 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de190aef LP |
579 | if (r <= 0) |
580 | return r; | |
581 | ||
cbdca852 | 582 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 583 | |
cbdca852 LP |
584 | } else if (m->type == MATCH_OR_TERM) { |
585 | Match *i; | |
de7b95cd | 586 | |
cbdca852 | 587 | /* Find the earliest match beyond after_offset */ |
de190aef | 588 | |
cbdca852 LP |
589 | LIST_FOREACH(matches, i, m->matches) { |
590 | uint64_t cp; | |
de190aef | 591 | |
cbdca852 | 592 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
593 | if (r < 0) |
594 | return r; | |
cbdca852 | 595 | else if (r > 0) { |
bc302926 | 596 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
597 | np = cp; |
598 | } | |
599 | } | |
b4e5f920 | 600 | |
bc302926 ZJS |
601 | if (np == 0) |
602 | return 0; | |
603 | ||
cbdca852 | 604 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 605 | Match *i, *last_moved; |
de190aef | 606 | |
cbdca852 | 607 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 608 | * this until we find an offset that matches for all |
cbdca852 | 609 | * matches. */ |
de190aef | 610 | |
cbdca852 LP |
611 | if (!m->matches) |
612 | return 0; | |
de7b95cd | 613 | |
2bc8ca0c ZJS |
614 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
615 | if (r <= 0) | |
616 | return r; | |
de190aef | 617 | |
2bc8ca0c ZJS |
618 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
619 | last_moved = m->matches; | |
de190aef | 620 | |
2bc8ca0c ZJS |
621 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
622 | uint64_t cp; | |
de190aef | 623 | |
2bc8ca0c ZJS |
624 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
625 | if (r <= 0) | |
626 | return r; | |
de190aef | 627 | |
2bc8ca0c ZJS |
628 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
629 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
630 | np = cp; | |
631 | last_moved = i; | |
de190aef | 632 | } |
2bc8ca0c | 633 | } |
cbdca852 | 634 | } |
de190aef | 635 | |
bc302926 | 636 | assert(np > 0); |
de190aef | 637 | |
cbdca852 LP |
638 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
639 | if (r < 0) | |
640 | return r; | |
de7b95cd | 641 | |
de190aef | 642 | if (ret) |
cbdca852 | 643 | *ret = n; |
de190aef | 644 | if (offset) |
cbdca852 | 645 | *offset = np; |
de190aef LP |
646 | |
647 | return 1; | |
648 | } | |
649 | ||
cbdca852 LP |
650 | static int find_location_for_match( |
651 | sd_journal *j, | |
652 | Match *m, | |
653 | JournalFile *f, | |
654 | direction_t direction, | |
655 | Object **ret, | |
656 | uint64_t *offset) { | |
657 | ||
de190aef | 658 | int r; |
de190aef LP |
659 | |
660 | assert(j); | |
cbdca852 | 661 | assert(m); |
de190aef | 662 | assert(f); |
de190aef | 663 | |
cbdca852 LP |
664 | if (m->type == MATCH_DISCRETE) { |
665 | uint64_t dp; | |
de190aef | 666 | |
cbdca852 | 667 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, le64toh(m->le_hash), NULL, &dp); |
de7b95cd LP |
668 | if (r <= 0) |
669 | return r; | |
670 | ||
cbdca852 | 671 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 672 | |
cbdca852 LP |
673 | if (j->current_location.type == LOCATION_HEAD) |
674 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
675 | if (j->current_location.type == LOCATION_TAIL) | |
676 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
677 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
678 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
679 | if (j->current_location.monotonic_set) { | |
680 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
681 | if (r != -ENOENT) | |
682 | return r; | |
683 | } | |
684 | if (j->current_location.realtime_set) | |
685 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 686 | |
cbdca852 | 687 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 688 | |
cbdca852 LP |
689 | } else if (m->type == MATCH_OR_TERM) { |
690 | uint64_t np = 0; | |
691 | Object *n; | |
692 | Match *i; | |
de7b95cd | 693 | |
cbdca852 | 694 | /* Find the earliest match */ |
de7b95cd | 695 | |
cbdca852 LP |
696 | LIST_FOREACH(matches, i, m->matches) { |
697 | uint64_t cp; | |
698 | ||
699 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
700 | if (r < 0) | |
701 | return r; | |
702 | else if (r > 0) { | |
703 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
704 | np = cp; | |
de190aef | 705 | } |
cbdca852 | 706 | } |
de190aef | 707 | |
cbdca852 LP |
708 | if (np == 0) |
709 | return 0; | |
de7b95cd | 710 | |
cbdca852 LP |
711 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
712 | if (r < 0) | |
713 | return r; | |
de7b95cd | 714 | |
cbdca852 LP |
715 | if (ret) |
716 | *ret = n; | |
717 | if (offset) | |
718 | *offset = np; | |
de190aef | 719 | |
cbdca852 | 720 | return 1; |
e892bd17 | 721 | |
cbdca852 LP |
722 | } else { |
723 | Match *i; | |
724 | uint64_t np = 0; | |
725 | ||
726 | assert(m->type == MATCH_AND_TERM); | |
727 | ||
728 | /* First jump to the last match, and then find the | |
729 | * next one where all matches match */ | |
730 | ||
731 | if (!m->matches) | |
732 | return 0; | |
733 | ||
734 | LIST_FOREACH(matches, i, m->matches) { | |
735 | uint64_t cp; | |
736 | ||
737 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
738 | if (r <= 0) | |
4b067dc9 LP |
739 | return r; |
740 | ||
bc302926 | 741 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 742 | np = cp; |
de7b95cd LP |
743 | } |
744 | ||
cbdca852 LP |
745 | return next_for_match(j, m, f, np, direction, ret, offset); |
746 | } | |
747 | } | |
de190aef | 748 | |
cbdca852 LP |
749 | static int find_location_with_matches( |
750 | sd_journal *j, | |
751 | JournalFile *f, | |
752 | direction_t direction, | |
753 | Object **ret, | |
754 | uint64_t *offset) { | |
755 | ||
756 | int r; | |
757 | ||
758 | assert(j); | |
759 | assert(f); | |
760 | assert(ret); | |
761 | assert(offset); | |
762 | ||
763 | if (!j->level0) { | |
764 | /* No matches is simple */ | |
765 | ||
766 | if (j->current_location.type == LOCATION_HEAD) | |
767 | return journal_file_next_entry(f, NULL, 0, DIRECTION_DOWN, ret, offset); | |
768 | if (j->current_location.type == LOCATION_TAIL) | |
769 | return journal_file_next_entry(f, NULL, 0, DIRECTION_UP, ret, offset); | |
770 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
771 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
772 | if (j->current_location.monotonic_set) { | |
773 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
774 | if (r != -ENOENT) | |
775 | return r; | |
de7b95cd | 776 | } |
cbdca852 LP |
777 | if (j->current_location.realtime_set) |
778 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 779 | |
cbdca852 LP |
780 | return journal_file_next_entry(f, NULL, 0, direction, ret, offset); |
781 | } else | |
782 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
783 | } | |
de7b95cd | 784 | |
cbdca852 LP |
785 | static int next_with_matches( |
786 | sd_journal *j, | |
787 | JournalFile *f, | |
788 | direction_t direction, | |
789 | Object **ret, | |
790 | uint64_t *offset) { | |
791 | ||
792 | Object *c; | |
793 | uint64_t cp; | |
794 | ||
795 | assert(j); | |
796 | assert(f); | |
797 | assert(ret); | |
798 | assert(offset); | |
799 | ||
800 | c = *ret; | |
801 | cp = *offset; | |
802 | ||
803 | /* No matches is easy. We simple advance the file | |
804 | * pointer by one. */ | |
805 | if (!j->level0) | |
806 | return journal_file_next_entry(f, c, cp, direction, ret, offset); | |
807 | ||
808 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 809 | * with an offset at least one step larger */ |
cbdca852 | 810 | return next_for_match(j, j->level0, f, direction == DIRECTION_DOWN ? cp+1 : cp-1, direction, ret, offset); |
de7b95cd LP |
811 | } |
812 | ||
de190aef LP |
813 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction, Object **ret, uint64_t *offset) { |
814 | Object *c; | |
815 | uint64_t cp; | |
cbdca852 | 816 | int r; |
de190aef LP |
817 | |
818 | assert(j); | |
819 | assert(f); | |
820 | ||
87011c25 | 821 | if (f->last_direction == direction && f->current_offset > 0) { |
466ccd92 LP |
822 | cp = f->current_offset; |
823 | ||
824 | r = journal_file_move_to_object(f, OBJECT_ENTRY, cp, &c); | |
de190aef LP |
825 | if (r < 0) |
826 | return r; | |
827 | ||
de190aef LP |
828 | r = next_with_matches(j, f, direction, &c, &cp); |
829 | if (r <= 0) | |
830 | return r; | |
de190aef | 831 | } else { |
cbdca852 | 832 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
833 | if (r <= 0) |
834 | return r; | |
de190aef LP |
835 | } |
836 | ||
bc302926 | 837 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
838 | * that is actually different from what we were previously |
839 | * looking at. This is necessary to handle entries which exist | |
840 | * in two (or more) journal files, and which shall all be | |
841 | * suppressed but one. */ | |
842 | ||
de190aef LP |
843 | for (;;) { |
844 | bool found; | |
845 | ||
846 | if (j->current_location.type == LOCATION_DISCRETE) { | |
847 | int k; | |
848 | ||
849 | k = compare_with_location(f, c, &j->current_location); | |
850 | if (direction == DIRECTION_DOWN) | |
cbdca852 | 851 | found = k > 0; |
de190aef | 852 | else |
cbdca852 | 853 | found = k < 0; |
de190aef LP |
854 | } else |
855 | found = true; | |
856 | ||
857 | if (found) { | |
858 | if (ret) | |
859 | *ret = c; | |
860 | if (offset) | |
861 | *offset = cp; | |
862 | return 1; | |
863 | } | |
864 | ||
865 | r = next_with_matches(j, f, direction, &c, &cp); | |
866 | if (r <= 0) | |
867 | return r; | |
868 | } | |
869 | } | |
870 | ||
e892bd17 | 871 | static int real_journal_next(sd_journal *j, direction_t direction) { |
468b21de LP |
872 | JournalFile *f, *new_file = NULL; |
873 | uint64_t new_offset = 0; | |
874 | Object *o; | |
875 | uint64_t p; | |
cec736d2 | 876 | Iterator i; |
87d2c1ff LP |
877 | int r; |
878 | ||
1ae464e0 TA |
879 | assert_return(j, -EINVAL); |
880 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 881 | |
cec736d2 | 882 | HASHMAP_FOREACH(f, j->files, i) { |
de190aef | 883 | bool found; |
87d2c1ff | 884 | |
de190aef | 885 | r = next_beyond_location(j, f, direction, &o, &p); |
e590af26 LP |
886 | if (r < 0) { |
887 | log_debug("Can't iterate through %s, ignoring: %s", f->path, strerror(-r)); | |
888 | continue; | |
889 | } else if (r == 0) | |
cec736d2 | 890 | continue; |
87d2c1ff | 891 | |
468b21de | 892 | if (!new_file) |
de190aef LP |
893 | found = true; |
894 | else { | |
895 | int k; | |
896 | ||
468b21de | 897 | k = compare_entry_order(f, o, new_file, new_offset); |
de190aef | 898 | |
bc302926 | 899 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
900 | } |
901 | ||
902 | if (found) { | |
468b21de | 903 | new_file = f; |
cec736d2 | 904 | new_offset = p; |
87d2c1ff | 905 | } |
87d2c1ff LP |
906 | } |
907 | ||
468b21de | 908 | if (!new_file) |
de190aef | 909 | return 0; |
ae2cc8ef | 910 | |
468b21de LP |
911 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_offset, &o); |
912 | if (r < 0) | |
913 | return r; | |
914 | ||
87011c25 | 915 | set_location(j, LOCATION_DISCRETE, new_file, o, direction, new_offset); |
ae2cc8ef | 916 | |
de190aef LP |
917 | return 1; |
918 | } | |
ae2cc8ef | 919 | |
a5344d2c | 920 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
921 | return real_journal_next(j, DIRECTION_DOWN); |
922 | } | |
ae2cc8ef | 923 | |
a5344d2c | 924 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
925 | return real_journal_next(j, DIRECTION_UP); |
926 | } | |
ae2cc8ef | 927 | |
6f003b43 | 928 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 929 | int c = 0, r; |
ae2cc8ef | 930 | |
1ae464e0 TA |
931 | assert_return(j, -EINVAL); |
932 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 933 | |
6f003b43 LP |
934 | if (skip == 0) { |
935 | /* If this is not a discrete skip, then at least | |
936 | * resolve the current location */ | |
937 | if (j->current_location.type != LOCATION_DISCRETE) | |
938 | return real_journal_next(j, direction); | |
939 | ||
940 | return 0; | |
941 | } | |
942 | ||
943 | do { | |
944 | r = real_journal_next(j, direction); | |
de190aef LP |
945 | if (r < 0) |
946 | return r; | |
947 | ||
948 | if (r == 0) | |
949 | return c; | |
950 | ||
951 | skip--; | |
952 | c++; | |
6f003b43 | 953 | } while (skip > 0); |
87d2c1ff | 954 | |
de190aef | 955 | return c; |
87d2c1ff LP |
956 | } |
957 | ||
6f003b43 LP |
958 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
959 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
960 | } | |
de190aef | 961 | |
6f003b43 LP |
962 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
963 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
964 | } |
965 | ||
a5344d2c | 966 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 967 | Object *o; |
87d2c1ff | 968 | int r; |
3fbf9cbb | 969 | char bid[33], sid[33]; |
87d2c1ff | 970 | |
1ae464e0 TA |
971 | assert_return(j, -EINVAL); |
972 | assert_return(!journal_pid_changed(j), -ECHILD); | |
973 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 974 | |
3fbf9cbb LP |
975 | if (!j->current_file || j->current_file->current_offset <= 0) |
976 | return -EADDRNOTAVAIL; | |
87d2c1ff | 977 | |
de190aef | 978 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
979 | if (r < 0) |
980 | return r; | |
981 | ||
3fbf9cbb LP |
982 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
983 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 984 | |
3fbf9cbb | 985 | if (asprintf(cursor, |
507f22bd ZJS |
986 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
987 | sid, le64toh(o->entry.seqnum), | |
988 | bid, le64toh(o->entry.monotonic), | |
989 | le64toh(o->entry.realtime), | |
990 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 991 | return -ENOMEM; |
87d2c1ff | 992 | |
6f47ad30 | 993 | return 0; |
87d2c1ff LP |
994 | } |
995 | ||
a5344d2c | 996 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
c6511e85 | 997 | char *w, *state; |
de190aef | 998 | size_t l; |
de190aef LP |
999 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
1000 | bool | |
1001 | seqnum_id_set = false, | |
1002 | seqnum_set = false, | |
1003 | boot_id_set = false, | |
1004 | monotonic_set = false, | |
1005 | realtime_set = false, | |
1006 | xor_hash_set = false; | |
1007 | sd_id128_t seqnum_id, boot_id; | |
1008 | ||
1ae464e0 TA |
1009 | assert_return(j, -EINVAL); |
1010 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1011 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef LP |
1012 | |
1013 | FOREACH_WORD_SEPARATOR(w, l, cursor, ";", state) { | |
1014 | char *item; | |
1015 | int k = 0; | |
1016 | ||
1017 | if (l < 2 || w[1] != '=') | |
1018 | return -EINVAL; | |
1019 | ||
1020 | item = strndup(w, l); | |
1021 | if (!item) | |
1022 | return -ENOMEM; | |
1023 | ||
1024 | switch (w[0]) { | |
1025 | ||
1026 | case 's': | |
1027 | seqnum_id_set = true; | |
be3ea5ea | 1028 | k = sd_id128_from_string(item+2, &seqnum_id); |
de190aef LP |
1029 | break; |
1030 | ||
1031 | case 'i': | |
1032 | seqnum_set = true; | |
be3ea5ea | 1033 | if (sscanf(item+2, "%llx", &seqnum) != 1) |
de190aef LP |
1034 | k = -EINVAL; |
1035 | break; | |
1036 | ||
1037 | case 'b': | |
1038 | boot_id_set = true; | |
be3ea5ea | 1039 | k = sd_id128_from_string(item+2, &boot_id); |
de190aef LP |
1040 | break; |
1041 | ||
1042 | case 'm': | |
1043 | monotonic_set = true; | |
be3ea5ea | 1044 | if (sscanf(item+2, "%llx", &monotonic) != 1) |
de190aef LP |
1045 | k = -EINVAL; |
1046 | break; | |
1047 | ||
1048 | case 't': | |
1049 | realtime_set = true; | |
be3ea5ea | 1050 | if (sscanf(item+2, "%llx", &realtime) != 1) |
de190aef LP |
1051 | k = -EINVAL; |
1052 | break; | |
1053 | ||
1054 | case 'x': | |
1055 | xor_hash_set = true; | |
be3ea5ea | 1056 | if (sscanf(item+2, "%llx", &xor_hash) != 1) |
de190aef LP |
1057 | k = -EINVAL; |
1058 | break; | |
1059 | } | |
1060 | ||
1061 | free(item); | |
1062 | ||
1063 | if (k < 0) | |
1064 | return k; | |
1065 | } | |
1066 | ||
1067 | if ((!seqnum_set || !seqnum_id_set) && | |
1068 | (!monotonic_set || !boot_id_set) && | |
1069 | !realtime_set) | |
1070 | return -EINVAL; | |
1071 | ||
1072 | reset_location(j); | |
1073 | ||
a87247dd | 1074 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1075 | |
1076 | if (realtime_set) { | |
1077 | j->current_location.realtime = (uint64_t) realtime; | |
1078 | j->current_location.realtime_set = true; | |
1079 | } | |
1080 | ||
1081 | if (seqnum_set && seqnum_id_set) { | |
1082 | j->current_location.seqnum = (uint64_t) seqnum; | |
1083 | j->current_location.seqnum_id = seqnum_id; | |
1084 | j->current_location.seqnum_set = true; | |
1085 | } | |
1086 | ||
1087 | if (monotonic_set && boot_id_set) { | |
1088 | j->current_location.monotonic = (uint64_t) monotonic; | |
1089 | j->current_location.boot_id = boot_id; | |
1090 | j->current_location.monotonic_set = true; | |
1091 | } | |
1092 | ||
1093 | if (xor_hash_set) { | |
1094 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1095 | j->current_location.xor_hash_set = true; | |
1096 | } | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | ||
c6511e85 LP |
1101 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1102 | int r; | |
1103 | char *w, *state; | |
1104 | size_t l; | |
1105 | Object *o; | |
1106 | ||
1ae464e0 TA |
1107 | assert_return(j, -EINVAL); |
1108 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1109 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1110 | |
1111 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1112 | return -EADDRNOTAVAIL; | |
1113 | ||
1114 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1115 | if (r < 0) | |
1116 | return r; | |
1117 | ||
1118 | FOREACH_WORD_SEPARATOR(w, l, cursor, ";", state) { | |
1119 | _cleanup_free_ char *item = NULL; | |
1120 | sd_id128_t id; | |
1121 | unsigned long long ll; | |
1122 | int k = 0; | |
1123 | ||
1124 | if (l < 2 || w[1] != '=') | |
1125 | return -EINVAL; | |
1126 | ||
1127 | item = strndup(w, l); | |
1128 | if (!item) | |
1129 | return -ENOMEM; | |
1130 | ||
1131 | switch (w[0]) { | |
1132 | ||
1133 | case 's': | |
1134 | k = sd_id128_from_string(item+2, &id); | |
1135 | if (k < 0) | |
1136 | return k; | |
1137 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1138 | return 0; | |
1139 | break; | |
1140 | ||
1141 | case 'i': | |
1142 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1143 | return -EINVAL; | |
1144 | if (ll != le64toh(o->entry.seqnum)) | |
1145 | return 0; | |
1146 | break; | |
1147 | ||
1148 | case 'b': | |
1149 | k = sd_id128_from_string(item+2, &id); | |
1150 | if (k < 0) | |
1151 | return k; | |
1152 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1153 | return 0; | |
1154 | break; | |
1155 | ||
1156 | case 'm': | |
1157 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1158 | return -EINVAL; | |
1159 | if (ll != le64toh(o->entry.monotonic)) | |
1160 | return 0; | |
1161 | break; | |
1162 | ||
1163 | case 't': | |
1164 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1165 | return -EINVAL; | |
1166 | if (ll != le64toh(o->entry.realtime)) | |
1167 | return 0; | |
1168 | break; | |
1169 | ||
1170 | case 'x': | |
1171 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1172 | return -EINVAL; | |
1173 | if (ll != le64toh(o->entry.xor_hash)) | |
1174 | return 0; | |
1175 | break; | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | return 1; | |
1180 | } | |
1181 | ||
1182 | ||
a5344d2c | 1183 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1184 | assert_return(j, -EINVAL); |
1185 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1186 | |
1187 | reset_location(j); | |
a87247dd | 1188 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1189 | j->current_location.boot_id = boot_id; |
1190 | j->current_location.monotonic = usec; | |
1191 | j->current_location.monotonic_set = true; | |
1192 | ||
1193 | return 0; | |
1194 | } | |
1195 | ||
a5344d2c | 1196 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1197 | assert_return(j, -EINVAL); |
1198 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1199 | |
1200 | reset_location(j); | |
a87247dd | 1201 | j->current_location.type = LOCATION_SEEK; |
de190aef LP |
1202 | j->current_location.realtime = usec; |
1203 | j->current_location.realtime_set = true; | |
1204 | ||
1205 | return 0; | |
1206 | } | |
1207 | ||
a5344d2c | 1208 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1209 | assert_return(j, -EINVAL); |
1210 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1211 | |
1212 | reset_location(j); | |
1213 | j->current_location.type = LOCATION_HEAD; | |
1214 | ||
1215 | return 0; | |
1216 | } | |
1217 | ||
a5344d2c | 1218 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1219 | assert_return(j, -EINVAL); |
1220 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef LP |
1221 | |
1222 | reset_location(j); | |
1223 | j->current_location.type = LOCATION_TAIL; | |
1224 | ||
1225 | return 0; | |
87d2c1ff LP |
1226 | } |
1227 | ||
85210bff LP |
1228 | static void check_network(sd_journal *j, int fd) { |
1229 | struct statfs sfs; | |
1230 | ||
1231 | assert(j); | |
1232 | ||
1233 | if (j->on_network) | |
1234 | return; | |
1235 | ||
1236 | if (fstatfs(fd, &sfs) < 0) | |
1237 | return; | |
1238 | ||
1239 | j->on_network = | |
c51cf056 ZJS |
1240 | F_TYPE_EQUAL(sfs.f_type, CIFS_MAGIC_NUMBER) || |
1241 | F_TYPE_EQUAL(sfs.f_type, CODA_SUPER_MAGIC) || | |
1242 | F_TYPE_EQUAL(sfs.f_type, NCP_SUPER_MAGIC) || | |
1243 | F_TYPE_EQUAL(sfs.f_type, NFS_SUPER_MAGIC) || | |
1244 | F_TYPE_EQUAL(sfs.f_type, SMB_SUPER_MAGIC); | |
85210bff LP |
1245 | } |
1246 | ||
a688baa8 ZJS |
1247 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1248 | const char *full, *tilded, *atted; | |
1249 | ||
baabc091 | 1250 | full = strappenda(prefix, ".journal"); |
a688baa8 ZJS |
1251 | tilded = strappenda(full, "~"); |
1252 | atted = strappenda(prefix, "@"); | |
1253 | ||
1254 | return streq(filename, full) || | |
1255 | streq(filename, tilded) || | |
1256 | startswith(filename, atted); | |
1257 | } | |
1258 | ||
1259 | static bool file_type_wanted(int flags, const char *filename) { | |
1260 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) | |
1261 | return false; | |
1262 | ||
1263 | /* no flags set → every type is OK */ | |
1264 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1265 | return true; | |
1266 | ||
1267 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1268 | return true; | |
1269 | ||
1270 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1271 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1272 | ||
1273 | assert_se(snprintf(prefix, sizeof(prefix), "user-%lu", (unsigned long) getuid()) | |
1274 | < (int) sizeof(prefix)); | |
1275 | ||
1276 | if (file_has_type_prefix(prefix, filename)) | |
1277 | return true; | |
1278 | } | |
1279 | ||
1280 | return false; | |
1281 | } | |
1282 | ||
5302ebe1 | 1283 | static int add_any_file(sd_journal *j, const char *path) { |
39883f62 | 1284 | JournalFile *f = NULL; |
5302ebe1 | 1285 | int r; |
3fbf9cbb LP |
1286 | |
1287 | assert(j); | |
5302ebe1 | 1288 | assert(path); |
3fbf9cbb | 1289 | |
a50d7d43 | 1290 | if (hashmap_get(j->files, path)) |
50f20cfd | 1291 | return 0; |
50f20cfd LP |
1292 | |
1293 | if (hashmap_size(j->files) >= JOURNAL_FILES_MAX) { | |
5302ebe1 | 1294 | log_warning("Too many open journal files, not adding %s.", path); |
3ac251b8 | 1295 | return set_put_error(j, -ETOOMANYREFS); |
50f20cfd LP |
1296 | } |
1297 | ||
16e9f408 | 1298 | r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f); |
5302ebe1 | 1299 | if (r < 0) |
3fbf9cbb | 1300 | return r; |
3fbf9cbb | 1301 | |
72f59706 | 1302 | /* journal_file_dump(f); */ |
de190aef | 1303 | |
3fbf9cbb LP |
1304 | r = hashmap_put(j->files, f->path, f); |
1305 | if (r < 0) { | |
1306 | journal_file_close(f); | |
1307 | return r; | |
1308 | } | |
1309 | ||
5ec76417 | 1310 | log_debug("File %s added.", f->path); |
a50d7d43 | 1311 | |
85210bff LP |
1312 | check_network(j, f->fd); |
1313 | ||
a963990f LP |
1314 | j->current_invalidate_counter ++; |
1315 | ||
50f20cfd LP |
1316 | return 0; |
1317 | } | |
1318 | ||
5302ebe1 ZJS |
1319 | static int add_file(sd_journal *j, const char *prefix, const char *filename) { |
1320 | _cleanup_free_ char *path = NULL; | |
1321 | int r; | |
1322 | ||
1323 | assert(j); | |
1324 | assert(prefix); | |
1325 | assert(filename); | |
1326 | ||
1327 | if (j->no_new_files || | |
1328 | !file_type_wanted(j->flags, filename)) | |
1329 | return 0; | |
1330 | ||
1331 | path = strjoin(prefix, "/", filename, NULL); | |
1332 | if (!path) | |
1333 | return -ENOMEM; | |
1334 | ||
1335 | r = add_any_file(j, path); | |
1336 | if (r == -ENOENT) | |
1337 | return 0; | |
1338 | return 0; | |
1339 | } | |
1340 | ||
a963990f LP |
1341 | static int remove_file(sd_journal *j, const char *prefix, const char *filename) { |
1342 | char *path; | |
50f20cfd LP |
1343 | JournalFile *f; |
1344 | ||
1345 | assert(j); | |
1346 | assert(prefix); | |
1347 | assert(filename); | |
1348 | ||
b7def684 | 1349 | path = strjoin(prefix, "/", filename, NULL); |
a963990f | 1350 | if (!path) |
50f20cfd LP |
1351 | return -ENOMEM; |
1352 | ||
a963990f LP |
1353 | f = hashmap_get(j->files, path); |
1354 | free(path); | |
50f20cfd LP |
1355 | if (!f) |
1356 | return 0; | |
1357 | ||
1358 | hashmap_remove(j->files, f->path); | |
44a5fa34 | 1359 | |
5ec76417 | 1360 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1361 | |
3c1668da LP |
1362 | if (j->current_file == f) { |
1363 | j->current_file = NULL; | |
1364 | j->current_field = 0; | |
1365 | } | |
1366 | ||
1367 | if (j->unique_file == f) { | |
1368 | j->unique_file = NULL; | |
1369 | j->unique_offset = 0; | |
1370 | } | |
1371 | ||
50f20cfd LP |
1372 | journal_file_close(f); |
1373 | ||
a963990f LP |
1374 | j->current_invalidate_counter ++; |
1375 | ||
3fbf9cbb LP |
1376 | return 0; |
1377 | } | |
1378 | ||
a963990f | 1379 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname) { |
7fd1b19b | 1380 | _cleanup_free_ char *path = NULL; |
3fbf9cbb | 1381 | int r; |
7fd1b19b | 1382 | _cleanup_closedir_ DIR *d = NULL; |
cf244689 | 1383 | sd_id128_t id, mid; |
a963990f | 1384 | Directory *m; |
3fbf9cbb LP |
1385 | |
1386 | assert(j); | |
1387 | assert(prefix); | |
a963990f | 1388 | assert(dirname); |
3fbf9cbb | 1389 | |
d95b1fb3 ZJS |
1390 | log_debug("Considering %s/%s.", prefix, dirname); |
1391 | ||
cf244689 | 1392 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && |
a963990f | 1393 | (sd_id128_from_string(dirname, &id) < 0 || |
cf244689 | 1394 | sd_id128_get_machine(&mid) < 0 || |
d95b1fb3 | 1395 | !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run")))) |
cf244689 LP |
1396 | return 0; |
1397 | ||
b7def684 | 1398 | path = strjoin(prefix, "/", dirname, NULL); |
a963990f | 1399 | if (!path) |
3fbf9cbb LP |
1400 | return -ENOMEM; |
1401 | ||
a963990f | 1402 | d = opendir(path); |
3fbf9cbb | 1403 | if (!d) { |
a963990f | 1404 | log_debug("Failed to open %s: %m", path); |
3fbf9cbb LP |
1405 | if (errno == ENOENT) |
1406 | return 0; | |
3fbf9cbb LP |
1407 | return -errno; |
1408 | } | |
1409 | ||
a963990f LP |
1410 | m = hashmap_get(j->directories_by_path, path); |
1411 | if (!m) { | |
1412 | m = new0(Directory, 1); | |
a50d7d43 | 1413 | if (!m) |
a963990f | 1414 | return -ENOMEM; |
a963990f LP |
1415 | |
1416 | m->is_root = false; | |
1417 | m->path = path; | |
1418 | ||
1419 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1420 | free(m); |
1421 | return -ENOMEM; | |
1422 | } | |
1423 | ||
a50d7d43 | 1424 | path = NULL; /* avoid freeing in cleanup */ |
a963990f LP |
1425 | j->current_invalidate_counter ++; |
1426 | ||
5ec76417 | 1427 | log_debug("Directory %s added.", m->path); |
a963990f | 1428 | |
a50d7d43 | 1429 | } else if (m->is_root) |
a963990f | 1430 | return 0; |
a963990f LP |
1431 | |
1432 | if (m->wd <= 0 && j->inotify_fd >= 0) { | |
1433 | ||
1434 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1435 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
5e6870ea | 1436 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| |
4a842cad | 1437 | IN_ONLYDIR); |
a963990f LP |
1438 | |
1439 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1440 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1441 | } | |
1442 | ||
1443 | for (;;) { | |
7d5e9c0f | 1444 | struct dirent *de; |
a963990f | 1445 | |
bde1fdd7 FW |
1446 | errno = 0; |
1447 | de = readdir(d); | |
1448 | if (!de && errno != 0) { | |
1449 | r = -errno; | |
1450 | log_debug("Failed to read directory %s: %s", | |
1451 | m->path, strerror(errno)); | |
1452 | return r; | |
1453 | } | |
1454 | if (!de) | |
a963990f LP |
1455 | break; |
1456 | ||
de2c3907 LP |
1457 | if (dirent_is_file_with_suffix(de, ".journal") || |
1458 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1459 | r = add_file(j, m->path, de->d_name); |
6fe391c5 ZJS |
1460 | if (r < 0) { |
1461 | log_debug("Failed to add file %s/%s: %s", | |
1462 | m->path, de->d_name, strerror(-r)); | |
3ac251b8 | 1463 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1464 | if (r < 0) |
1465 | return r; | |
1466 | } | |
a963990f LP |
1467 | } |
1468 | } | |
1469 | ||
85210bff LP |
1470 | check_network(j, dirfd(d)); |
1471 | ||
a963990f LP |
1472 | return 0; |
1473 | } | |
1474 | ||
89739579 | 1475 | static int add_root_directory(sd_journal *j, const char *p) { |
7fd1b19b | 1476 | _cleanup_closedir_ DIR *d = NULL; |
a963990f LP |
1477 | Directory *m; |
1478 | int r; | |
1479 | ||
1480 | assert(j); | |
1481 | assert(p); | |
1482 | ||
1483 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && | |
1484 | !path_startswith(p, "/run")) | |
1485 | return -EINVAL; | |
1486 | ||
89739579 LP |
1487 | if (j->prefix) |
1488 | p = strappenda(j->prefix, p); | |
b6741478 | 1489 | |
a963990f LP |
1490 | d = opendir(p); |
1491 | if (!d) | |
1492 | return -errno; | |
1493 | ||
1494 | m = hashmap_get(j->directories_by_path, p); | |
1495 | if (!m) { | |
1496 | m = new0(Directory, 1); | |
a50d7d43 | 1497 | if (!m) |
a963990f | 1498 | return -ENOMEM; |
a963990f LP |
1499 | |
1500 | m->is_root = true; | |
1501 | m->path = strdup(p); | |
1502 | if (!m->path) { | |
a963990f LP |
1503 | free(m); |
1504 | return -ENOMEM; | |
1505 | } | |
1506 | ||
1507 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1508 | free(m->path); |
1509 | free(m); | |
1510 | return -ENOMEM; | |
1511 | } | |
1512 | ||
1513 | j->current_invalidate_counter ++; | |
1514 | ||
5ec76417 | 1515 | log_debug("Root directory %s added.", m->path); |
a963990f | 1516 | |
a50d7d43 | 1517 | } else if (!m->is_root) |
a963990f | 1518 | return 0; |
50f20cfd | 1519 | |
a963990f LP |
1520 | if (m->wd <= 0 && j->inotify_fd >= 0) { |
1521 | ||
1522 | m->wd = inotify_add_watch(j->inotify_fd, m->path, | |
1523 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
4a842cad | 1524 | IN_ONLYDIR); |
a963990f LP |
1525 | |
1526 | if (m->wd > 0 && hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m) < 0) | |
1527 | inotify_rm_watch(j->inotify_fd, m->wd); | |
1528 | } | |
50f20cfd | 1529 | |
5302ebe1 ZJS |
1530 | if (j->no_new_files) |
1531 | return 0; | |
1532 | ||
3fbf9cbb | 1533 | for (;;) { |
7d5e9c0f | 1534 | struct dirent *de; |
a963990f | 1535 | sd_id128_t id; |
3fbf9cbb | 1536 | |
bde1fdd7 FW |
1537 | errno = 0; |
1538 | de = readdir(d); | |
1539 | if (!de && errno != 0) { | |
1540 | r = -errno; | |
1541 | log_debug("Failed to read directory %s: %s", | |
1542 | m->path, strerror(errno)); | |
1543 | return r; | |
1544 | } | |
1545 | if (!de) | |
3fbf9cbb LP |
1546 | break; |
1547 | ||
de2c3907 LP |
1548 | if (dirent_is_file_with_suffix(de, ".journal") || |
1549 | dirent_is_file_with_suffix(de, ".journal~")) { | |
a963990f | 1550 | r = add_file(j, m->path, de->d_name); |
6fe391c5 ZJS |
1551 | if (r < 0) { |
1552 | log_debug("Failed to add file %s/%s: %s", | |
1553 | m->path, de->d_name, strerror(-r)); | |
3ac251b8 | 1554 | r = set_put_error(j, r); |
6fe391c5 ZJS |
1555 | if (r < 0) |
1556 | return r; | |
1557 | } | |
6f5878a2 | 1558 | } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) && |
a963990f LP |
1559 | sd_id128_from_string(de->d_name, &id) >= 0) { |
1560 | ||
1561 | r = add_directory(j, m->path, de->d_name); | |
1562 | if (r < 0) | |
1563 | log_debug("Failed to add directory %s/%s: %s", m->path, de->d_name, strerror(-r)); | |
1564 | } | |
3fbf9cbb LP |
1565 | } |
1566 | ||
85210bff LP |
1567 | check_network(j, dirfd(d)); |
1568 | ||
a963990f LP |
1569 | return 0; |
1570 | } | |
1571 | ||
1572 | static int remove_directory(sd_journal *j, Directory *d) { | |
1573 | assert(j); | |
1574 | ||
1575 | if (d->wd > 0) { | |
1576 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1577 | ||
1578 | if (j->inotify_fd >= 0) | |
1579 | inotify_rm_watch(j->inotify_fd, d->wd); | |
1580 | } | |
1581 | ||
1582 | hashmap_remove(j->directories_by_path, d->path); | |
1583 | ||
1584 | if (d->is_root) | |
5ec76417 | 1585 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1586 | else |
5ec76417 | 1587 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1588 | |
1589 | free(d->path); | |
1590 | free(d); | |
50f20cfd | 1591 | |
3fbf9cbb LP |
1592 | return 0; |
1593 | } | |
1594 | ||
89739579 | 1595 | static int add_search_paths(sd_journal *j) { |
6fe391c5 | 1596 | int r; |
a963990f LP |
1597 | const char search_paths[] = |
1598 | "/run/log/journal\0" | |
1599 | "/var/log/journal\0"; | |
1600 | const char *p; | |
50f20cfd LP |
1601 | |
1602 | assert(j); | |
50f20cfd | 1603 | |
a963990f LP |
1604 | /* We ignore most errors here, since the idea is to only open |
1605 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1606 | |
6fe391c5 | 1607 | NULSTR_FOREACH(p, search_paths) { |
89739579 | 1608 | r = add_root_directory(j, p); |
3ac251b8 LP |
1609 | if (r < 0 && r != -ENOENT) { |
1610 | r = set_put_error(j, r); | |
1611 | if (r < 0) | |
1612 | return r; | |
1613 | } | |
6fe391c5 | 1614 | } |
50f20cfd | 1615 | |
a963990f | 1616 | return 0; |
50f20cfd LP |
1617 | } |
1618 | ||
5302ebe1 ZJS |
1619 | static int add_current_paths(sd_journal *j) { |
1620 | Iterator i; | |
1621 | JournalFile *f; | |
1622 | ||
1623 | assert(j); | |
1624 | assert(j->no_new_files); | |
1625 | ||
1626 | /* Simply adds all directories for files we have open as | |
1627 | * "root" directories. We don't expect errors here, so we | |
1628 | * treat them as fatal. */ | |
1629 | ||
1630 | HASHMAP_FOREACH(f, j->files, i) { | |
5302ebe1 | 1631 | _cleanup_free_ char *dir; |
e9174f29 | 1632 | int r; |
5302ebe1 ZJS |
1633 | |
1634 | dir = dirname_malloc(f->path); | |
1635 | if (!dir) | |
1636 | return -ENOMEM; | |
1637 | ||
89739579 | 1638 | r = add_root_directory(j, dir); |
5302ebe1 ZJS |
1639 | if (r < 0) { |
1640 | set_put_error(j, r); | |
1641 | return r; | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | return 0; | |
1646 | } | |
1647 | ||
1648 | ||
a963990f | 1649 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1650 | assert(j); |
50f20cfd | 1651 | |
a963990f LP |
1652 | if (j->inotify_fd < 0) { |
1653 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1654 | if (j->inotify_fd < 0) | |
1655 | return -errno; | |
1656 | } | |
50f20cfd | 1657 | |
a963990f LP |
1658 | if (!j->directories_by_wd) { |
1659 | j->directories_by_wd = hashmap_new(trivial_hash_func, trivial_compare_func); | |
1660 | if (!j->directories_by_wd) | |
1661 | return -ENOMEM; | |
50f20cfd | 1662 | } |
a963990f LP |
1663 | |
1664 | return 0; | |
50f20cfd LP |
1665 | } |
1666 | ||
7827b1a1 | 1667 | static sd_journal *journal_new(int flags, const char *path) { |
a963990f | 1668 | sd_journal *j; |
50f20cfd | 1669 | |
a963990f LP |
1670 | j = new0(sd_journal, 1); |
1671 | if (!j) | |
1672 | return NULL; | |
50f20cfd | 1673 | |
a65f06bb | 1674 | j->original_pid = getpid(); |
a963990f LP |
1675 | j->inotify_fd = -1; |
1676 | j->flags = flags; | |
93b73b06 | 1677 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1678 | |
7827b1a1 LP |
1679 | if (path) { |
1680 | j->path = strdup(path); | |
6180fc61 ZJS |
1681 | if (!j->path) |
1682 | goto fail; | |
7827b1a1 LP |
1683 | } |
1684 | ||
a963990f | 1685 | j->files = hashmap_new(string_hash_func, string_compare_func); |
a963990f | 1686 | j->directories_by_path = hashmap_new(string_hash_func, string_compare_func); |
84168d80 | 1687 | j->mmap = mmap_cache_new(); |
3ac251b8 | 1688 | if (!j->files || !j->directories_by_path || !j->mmap) |
6180fc61 | 1689 | goto fail; |
16e9f408 | 1690 | |
a963990f | 1691 | return j; |
6180fc61 ZJS |
1692 | |
1693 | fail: | |
1694 | sd_journal_close(j); | |
1695 | return NULL; | |
50f20cfd LP |
1696 | } |
1697 | ||
a5344d2c | 1698 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
87d2c1ff | 1699 | sd_journal *j; |
3fbf9cbb | 1700 | int r; |
87d2c1ff | 1701 | |
1ae464e0 | 1702 | assert_return(ret, -EINVAL); |
b6741478 | 1703 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY|SD_JOURNAL_SYSTEM|SD_JOURNAL_CURRENT_USER)) == 0, -EINVAL); |
87d2c1ff | 1704 | |
7827b1a1 | 1705 | j = journal_new(flags, NULL); |
87d2c1ff LP |
1706 | if (!j) |
1707 | return -ENOMEM; | |
1708 | ||
89739579 | 1709 | r = add_search_paths(j); |
a963990f | 1710 | if (r < 0) |
50f20cfd | 1711 | goto fail; |
50f20cfd | 1712 | |
a963990f LP |
1713 | *ret = j; |
1714 | return 0; | |
cf244689 | 1715 | |
a963990f LP |
1716 | fail: |
1717 | sd_journal_close(j); | |
87d2c1ff | 1718 | |
a963990f LP |
1719 | return r; |
1720 | } | |
50f20cfd | 1721 | |
b6741478 LP |
1722 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1723 | _cleanup_free_ char *root = NULL, *class = NULL; | |
1724 | sd_journal *j; | |
1725 | char *p; | |
1726 | int r; | |
1727 | ||
1728 | assert_return(machine, -EINVAL); | |
1729 | assert_return(ret, -EINVAL); | |
1730 | assert_return((flags & ~(SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM)) == 0, -EINVAL); | |
1731 | assert_return(filename_is_safe(machine), -EINVAL); | |
1732 | ||
1733 | p = strappenda("/run/systemd/machines/", machine); | |
1734 | r = parse_env_file(p, NEWLINE, "ROOT", &root, "CLASS", &class, NULL); | |
1735 | if (r == -ENOENT) | |
1736 | return -EHOSTDOWN; | |
1737 | if (r < 0) | |
1738 | return r; | |
1739 | if (!root) | |
1740 | return -ENODATA; | |
1741 | ||
1742 | if (!streq_ptr(class, "container")) | |
1743 | return -EIO; | |
1744 | ||
1745 | j = journal_new(flags, NULL); | |
1746 | if (!j) | |
1747 | return -ENOMEM; | |
1748 | ||
89739579 LP |
1749 | j->prefix = root; |
1750 | root = NULL; | |
1751 | ||
1752 | r = add_search_paths(j); | |
b6741478 LP |
1753 | if (r < 0) |
1754 | goto fail; | |
1755 | ||
1756 | *ret = j; | |
1757 | return 0; | |
1758 | ||
1759 | fail: | |
1760 | sd_journal_close(j); | |
1761 | return r; | |
1762 | } | |
1763 | ||
a963990f LP |
1764 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
1765 | sd_journal *j; | |
1766 | int r; | |
87d2c1ff | 1767 | |
1ae464e0 TA |
1768 | assert_return(ret, -EINVAL); |
1769 | assert_return(path, -EINVAL); | |
1770 | assert_return(flags == 0, -EINVAL); | |
87d2c1ff | 1771 | |
7827b1a1 | 1772 | j = journal_new(flags, path); |
a963990f LP |
1773 | if (!j) |
1774 | return -ENOMEM; | |
3fbf9cbb | 1775 | |
89739579 | 1776 | r = add_root_directory(j, path); |
6fe391c5 | 1777 | if (r < 0) { |
3ac251b8 | 1778 | set_put_error(j, r); |
a963990f | 1779 | goto fail; |
6fe391c5 | 1780 | } |
87d2c1ff LP |
1781 | |
1782 | *ret = j; | |
1783 | return 0; | |
1784 | ||
1785 | fail: | |
1786 | sd_journal_close(j); | |
1787 | ||
1788 | return r; | |
a963990f | 1789 | } |
87d2c1ff | 1790 | |
5302ebe1 ZJS |
1791 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
1792 | sd_journal *j; | |
1793 | const char **path; | |
1794 | int r; | |
1795 | ||
1ae464e0 TA |
1796 | assert_return(ret, -EINVAL); |
1797 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 ZJS |
1798 | |
1799 | j = journal_new(flags, NULL); | |
1800 | if (!j) | |
1801 | return -ENOMEM; | |
1802 | ||
1803 | STRV_FOREACH(path, paths) { | |
1804 | r = add_any_file(j, *path); | |
1805 | if (r < 0) { | |
1806 | log_error("Failed to open %s: %s", *path, strerror(-r)); | |
1807 | goto fail; | |
1808 | } | |
1809 | } | |
1810 | ||
1811 | j->no_new_files = true; | |
1812 | ||
1813 | *ret = j; | |
1814 | return 0; | |
1815 | ||
1816 | fail: | |
1817 | sd_journal_close(j); | |
1818 | ||
1819 | return r; | |
1820 | } | |
1821 | ||
a5344d2c | 1822 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f LP |
1823 | Directory *d; |
1824 | JournalFile *f; | |
1825 | ||
a5344d2c LP |
1826 | if (!j) |
1827 | return; | |
87d2c1ff | 1828 | |
54b1da83 LP |
1829 | sd_journal_flush_matches(j); |
1830 | ||
a963990f LP |
1831 | while ((f = hashmap_steal_first(j->files))) |
1832 | journal_file_close(f); | |
50f20cfd | 1833 | |
a963990f | 1834 | hashmap_free(j->files); |
260a2be4 | 1835 | |
a963990f LP |
1836 | while ((d = hashmap_first(j->directories_by_path))) |
1837 | remove_directory(j, d); | |
260a2be4 | 1838 | |
a963990f LP |
1839 | while ((d = hashmap_first(j->directories_by_wd))) |
1840 | remove_directory(j, d); | |
87d2c1ff | 1841 | |
a963990f LP |
1842 | hashmap_free(j->directories_by_path); |
1843 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 1844 | |
50f20cfd LP |
1845 | if (j->inotify_fd >= 0) |
1846 | close_nointr_nofail(j->inotify_fd); | |
1847 | ||
bf807d4d LP |
1848 | if (j->mmap) { |
1849 | log_debug("mmap cache statistics: %u hit, %u miss", mmap_cache_get_hit(j->mmap), mmap_cache_get_missed(j->mmap)); | |
16e9f408 | 1850 | mmap_cache_unref(j->mmap); |
bf807d4d | 1851 | } |
16e9f408 | 1852 | |
7827b1a1 | 1853 | free(j->path); |
89739579 | 1854 | free(j->prefix); |
3c1668da | 1855 | free(j->unique_field); |
6fe391c5 | 1856 | set_free(j->errors); |
87d2c1ff LP |
1857 | free(j); |
1858 | } | |
3fbf9cbb | 1859 | |
a5344d2c | 1860 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
1861 | Object *o; |
1862 | JournalFile *f; | |
1863 | int r; | |
1864 | ||
1ae464e0 TA |
1865 | assert_return(j, -EINVAL); |
1866 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1867 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
1868 | |
1869 | f = j->current_file; | |
1870 | if (!f) | |
de190aef | 1871 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1872 | |
1873 | if (f->current_offset <= 0) | |
de190aef | 1874 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1875 | |
de190aef | 1876 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1877 | if (r < 0) |
1878 | return r; | |
1879 | ||
1880 | *ret = le64toh(o->entry.realtime); | |
de190aef | 1881 | return 0; |
3fbf9cbb LP |
1882 | } |
1883 | ||
a5344d2c | 1884 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
1885 | Object *o; |
1886 | JournalFile *f; | |
1887 | int r; | |
1888 | sd_id128_t id; | |
1889 | ||
1ae464e0 TA |
1890 | assert_return(j, -EINVAL); |
1891 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
1892 | |
1893 | f = j->current_file; | |
1894 | if (!f) | |
de190aef | 1895 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1896 | |
1897 | if (f->current_offset <= 0) | |
de190aef | 1898 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1899 | |
de190aef | 1900 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1901 | if (r < 0) |
1902 | return r; | |
1903 | ||
de190aef LP |
1904 | if (ret_boot_id) |
1905 | *ret_boot_id = o->entry.boot_id; | |
1906 | else { | |
1907 | r = sd_id128_get_boot(&id); | |
1908 | if (r < 0) | |
1909 | return r; | |
3fbf9cbb | 1910 | |
de190aef | 1911 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 1912 | return -ESTALE; |
de190aef | 1913 | } |
3fbf9cbb | 1914 | |
14a65d65 LP |
1915 | if (ret) |
1916 | *ret = le64toh(o->entry.monotonic); | |
1917 | ||
de190aef | 1918 | return 0; |
3fbf9cbb LP |
1919 | } |
1920 | ||
362a3f81 LP |
1921 | static bool field_is_valid(const char *field) { |
1922 | const char *p; | |
1923 | ||
1924 | assert(field); | |
1925 | ||
1926 | if (isempty(field)) | |
1927 | return false; | |
1928 | ||
1929 | if (startswith(field, "__")) | |
1930 | return false; | |
1931 | ||
1932 | for (p = field; *p; p++) { | |
1933 | ||
1934 | if (*p == '_') | |
1935 | continue; | |
1936 | ||
1937 | if (*p >= 'A' && *p <= 'Z') | |
1938 | continue; | |
1939 | ||
1940 | if (*p >= '0' && *p <= '9') | |
1941 | continue; | |
1942 | ||
1943 | return false; | |
1944 | } | |
1945 | ||
1946 | return true; | |
1947 | } | |
1948 | ||
a5344d2c | 1949 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
1950 | JournalFile *f; |
1951 | uint64_t i, n; | |
1952 | size_t field_length; | |
1953 | int r; | |
1954 | Object *o; | |
1955 | ||
1ae464e0 TA |
1956 | assert_return(j, -EINVAL); |
1957 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1958 | assert_return(field, -EINVAL); | |
1959 | assert_return(data, -EINVAL); | |
1960 | assert_return(size, -EINVAL); | |
1961 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
1962 | |
1963 | f = j->current_file; | |
1964 | if (!f) | |
de190aef | 1965 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
1966 | |
1967 | if (f->current_offset <= 0) | |
de190aef | 1968 | return -EADDRNOTAVAIL; |
3fbf9cbb | 1969 | |
de190aef | 1970 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
1971 | if (r < 0) |
1972 | return r; | |
1973 | ||
1974 | field_length = strlen(field); | |
1975 | ||
1976 | n = journal_file_entry_n_items(o); | |
1977 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
1978 | uint64_t p, l; |
1979 | le64_t le_hash; | |
3fbf9cbb LP |
1980 | size_t t; |
1981 | ||
1982 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 1983 | le_hash = o->entry.items[i].hash; |
de190aef | 1984 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
1985 | if (r < 0) |
1986 | return r; | |
1987 | ||
de190aef | 1988 | if (le_hash != o->data.hash) |
de7b95cd LP |
1989 | return -EBADMSG; |
1990 | ||
3fbf9cbb LP |
1991 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
1992 | ||
807e17f0 LP |
1993 | if (o->object.flags & OBJECT_COMPRESSED) { |
1994 | ||
1995 | #ifdef HAVE_XZ | |
1996 | if (uncompress_startswith(o->data.payload, l, | |
1997 | &f->compress_buffer, &f->compress_buffer_size, | |
1998 | field, field_length, '=')) { | |
1999 | ||
2000 | uint64_t rsize; | |
2001 | ||
2002 | if (!uncompress_blob(o->data.payload, l, | |
93b73b06 LP |
2003 | &f->compress_buffer, &f->compress_buffer_size, &rsize, |
2004 | j->data_threshold)) | |
807e17f0 LP |
2005 | return -EBADMSG; |
2006 | ||
2007 | *data = f->compress_buffer; | |
2008 | *size = (size_t) rsize; | |
2009 | ||
2010 | return 0; | |
2011 | } | |
2012 | #else | |
2013 | return -EPROTONOSUPPORT; | |
2014 | #endif | |
2015 | ||
2016 | } else if (l >= field_length+1 && | |
2017 | memcmp(o->data.payload, field, field_length) == 0 && | |
2018 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 2019 | |
161e54f8 | 2020 | t = (size_t) l; |
3fbf9cbb | 2021 | |
161e54f8 LP |
2022 | if ((uint64_t) t != l) |
2023 | return -E2BIG; | |
3fbf9cbb | 2024 | |
161e54f8 LP |
2025 | *data = o->data.payload; |
2026 | *size = t; | |
3fbf9cbb | 2027 | |
99613ec5 | 2028 | return 0; |
161e54f8 | 2029 | } |
3fbf9cbb | 2030 | |
de190aef | 2031 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
2032 | if (r < 0) |
2033 | return r; | |
3fbf9cbb LP |
2034 | } |
2035 | ||
de190aef | 2036 | return -ENOENT; |
3fbf9cbb LP |
2037 | } |
2038 | ||
93b73b06 | 2039 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2040 | size_t t; |
2041 | uint64_t l; | |
2042 | ||
2043 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2044 | t = (size_t) l; | |
2045 | ||
2046 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2047 | if ((uint64_t) t != l) | |
2048 | return -E2BIG; | |
2049 | ||
2050 | if (o->object.flags & OBJECT_COMPRESSED) { | |
2051 | #ifdef HAVE_XZ | |
2052 | uint64_t rsize; | |
2053 | ||
93b73b06 | 2054 | if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize, j->data_threshold)) |
3c1668da LP |
2055 | return -EBADMSG; |
2056 | ||
2057 | *data = f->compress_buffer; | |
2058 | *size = (size_t) rsize; | |
2059 | #else | |
2060 | return -EPROTONOSUPPORT; | |
2061 | #endif | |
2062 | } else { | |
2063 | *data = o->data.payload; | |
2064 | *size = t; | |
2065 | } | |
2066 | ||
2067 | return 0; | |
2068 | } | |
2069 | ||
a5344d2c | 2070 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2071 | JournalFile *f; |
3c1668da | 2072 | uint64_t p, n; |
4fd052ae | 2073 | le64_t le_hash; |
3fbf9cbb LP |
2074 | int r; |
2075 | Object *o; | |
2076 | ||
1ae464e0 TA |
2077 | assert_return(j, -EINVAL); |
2078 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2079 | assert_return(data, -EINVAL); | |
2080 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2081 | |
2082 | f = j->current_file; | |
2083 | if (!f) | |
de190aef | 2084 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2085 | |
2086 | if (f->current_offset <= 0) | |
de190aef | 2087 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2088 | |
de190aef | 2089 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2090 | if (r < 0) |
2091 | return r; | |
2092 | ||
2093 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2094 | if (j->current_field >= n) |
3fbf9cbb LP |
2095 | return 0; |
2096 | ||
7210bfb3 | 2097 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2098 | le_hash = o->entry.items[j->current_field].hash; |
2099 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2100 | if (r < 0) |
2101 | return r; | |
2102 | ||
de190aef | 2103 | if (le_hash != o->data.hash) |
de7b95cd LP |
2104 | return -EBADMSG; |
2105 | ||
93b73b06 | 2106 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2107 | if (r < 0) |
2108 | return r; | |
3fbf9cbb | 2109 | |
7210bfb3 | 2110 | j->current_field ++; |
3fbf9cbb LP |
2111 | |
2112 | return 1; | |
2113 | } | |
c2373f84 | 2114 | |
a5344d2c LP |
2115 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2116 | if (!j) | |
2117 | return; | |
8725d60a LP |
2118 | |
2119 | j->current_field = 0; | |
c2373f84 | 2120 | } |
50f20cfd | 2121 | |
a5344d2c | 2122 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2123 | int r; |
2124 | ||
1ae464e0 TA |
2125 | assert_return(j, -EINVAL); |
2126 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2127 | |
a963990f LP |
2128 | if (j->inotify_fd >= 0) |
2129 | return j->inotify_fd; | |
2130 | ||
2131 | r = allocate_inotify(j); | |
2132 | if (r < 0) | |
2133 | return r; | |
2134 | ||
2135 | /* Iterate through all dirs again, to add them to the | |
2136 | * inotify */ | |
5302ebe1 ZJS |
2137 | if (j->no_new_files) |
2138 | r = add_current_paths(j); | |
2139 | else if (j->path) | |
89739579 | 2140 | r = add_root_directory(j, j->path); |
7827b1a1 | 2141 | else |
89739579 | 2142 | r = add_search_paths(j); |
a963990f LP |
2143 | if (r < 0) |
2144 | return r; | |
2145 | ||
50f20cfd LP |
2146 | return j->inotify_fd; |
2147 | } | |
2148 | ||
ee531d94 LP |
2149 | _public_ int sd_journal_get_events(sd_journal *j) { |
2150 | int fd; | |
2151 | ||
1ae464e0 TA |
2152 | assert_return(j, -EINVAL); |
2153 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2154 | |
2155 | fd = sd_journal_get_fd(j); | |
2156 | if (fd < 0) | |
2157 | return fd; | |
2158 | ||
2159 | return POLLIN; | |
2160 | } | |
2161 | ||
39c155ea LP |
2162 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2163 | int fd; | |
2164 | ||
1ae464e0 TA |
2165 | assert_return(j, -EINVAL); |
2166 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2167 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2168 | |
2169 | fd = sd_journal_get_fd(j); | |
2170 | if (fd < 0) | |
2171 | return fd; | |
2172 | ||
2173 | if (!j->on_network) { | |
2174 | *timeout_usec = (uint64_t) -1; | |
2175 | return 0; | |
2176 | } | |
2177 | ||
2178 | /* If we are on the network we need to regularly check for | |
2179 | * changes manually */ | |
2180 | ||
2181 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2182 | return 1; | |
2183 | } | |
2184 | ||
50f20cfd | 2185 | static void process_inotify_event(sd_journal *j, struct inotify_event *e) { |
a963990f | 2186 | Directory *d; |
50f20cfd LP |
2187 | int r; |
2188 | ||
2189 | assert(j); | |
2190 | assert(e); | |
2191 | ||
2192 | /* Is this a subdirectory we watch? */ | |
a963990f LP |
2193 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2194 | if (d) { | |
2195 | sd_id128_t id; | |
50f20cfd | 2196 | |
de2c3907 LP |
2197 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2198 | (endswith(e->name, ".journal") || | |
2199 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2200 | |
2201 | /* Event for a journal file */ | |
2202 | ||
2203 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { | |
a963990f | 2204 | r = add_file(j, d->path, e->name); |
6fe391c5 ZJS |
2205 | if (r < 0) { |
2206 | log_debug("Failed to add file %s/%s: %s", | |
2207 | d->path, e->name, strerror(-r)); | |
3ac251b8 | 2208 | set_put_error(j, r); |
6fe391c5 | 2209 | } |
a963990f | 2210 | |
5e6870ea | 2211 | } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) { |
50f20cfd | 2212 | |
a963990f | 2213 | r = remove_file(j, d->path, e->name); |
50f20cfd | 2214 | if (r < 0) |
a963990f | 2215 | log_debug("Failed to remove file %s/%s: %s", d->path, e->name, strerror(-r)); |
50f20cfd LP |
2216 | } |
2217 | ||
a963990f | 2218 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2219 | |
a963990f | 2220 | /* Event for a subdirectory */ |
50f20cfd | 2221 | |
a963990f LP |
2222 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) { |
2223 | r = remove_directory(j, d); | |
50f20cfd | 2224 | if (r < 0) |
a963990f | 2225 | log_debug("Failed to remove directory %s: %s", d->path, strerror(-r)); |
50f20cfd LP |
2226 | } |
2227 | ||
50f20cfd | 2228 | |
a963990f | 2229 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && sd_id128_from_string(e->name, &id) >= 0) { |
50f20cfd | 2230 | |
a963990f | 2231 | /* Event for root directory */ |
50f20cfd | 2232 | |
a963990f LP |
2233 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) { |
2234 | r = add_directory(j, d->path, e->name); | |
50f20cfd | 2235 | if (r < 0) |
a963990f | 2236 | log_debug("Failed to add directory %s/%s: %s", d->path, e->name, strerror(-r)); |
50f20cfd LP |
2237 | } |
2238 | } | |
2239 | ||
2240 | return; | |
2241 | } | |
2242 | ||
2243 | if (e->mask & IN_IGNORED) | |
2244 | return; | |
2245 | ||
2246 | log_warning("Unknown inotify event."); | |
2247 | } | |
2248 | ||
a963990f LP |
2249 | static int determine_change(sd_journal *j) { |
2250 | bool b; | |
2251 | ||
2252 | assert(j); | |
2253 | ||
2254 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2255 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2256 | ||
2257 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2258 | } | |
2259 | ||
a5344d2c | 2260 | _public_ int sd_journal_process(sd_journal *j) { |
19d1e4ee | 2261 | uint8_t buffer[sizeof(struct inotify_event) + FILENAME_MAX] _alignas_(struct inotify_event); |
a963990f | 2262 | bool got_something = false; |
50f20cfd | 2263 | |
1ae464e0 TA |
2264 | assert_return(j, -EINVAL); |
2265 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2266 | |
39c155ea LP |
2267 | j->last_process_usec = now(CLOCK_MONOTONIC); |
2268 | ||
50f20cfd LP |
2269 | for (;;) { |
2270 | struct inotify_event *e; | |
2271 | ssize_t l; | |
2272 | ||
2273 | l = read(j->inotify_fd, buffer, sizeof(buffer)); | |
2274 | if (l < 0) { | |
a963990f LP |
2275 | if (errno == EAGAIN || errno == EINTR) |
2276 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; | |
50f20cfd LP |
2277 | |
2278 | return -errno; | |
2279 | } | |
2280 | ||
a963990f LP |
2281 | got_something = true; |
2282 | ||
50f20cfd LP |
2283 | e = (struct inotify_event*) buffer; |
2284 | while (l > 0) { | |
2285 | size_t step; | |
2286 | ||
2287 | process_inotify_event(j, e); | |
2288 | ||
2289 | step = sizeof(struct inotify_event) + e->len; | |
2290 | assert(step <= (size_t) l); | |
2291 | ||
2292 | e = (struct inotify_event*) ((uint8_t*) e + step); | |
2293 | l -= step; | |
2294 | } | |
2295 | } | |
a963990f LP |
2296 | |
2297 | return determine_change(j); | |
50f20cfd | 2298 | } |
6ad1d1c3 | 2299 | |
e02d1cf7 | 2300 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2301 | int r; |
39c155ea | 2302 | uint64_t t; |
e02d1cf7 | 2303 | |
1ae464e0 TA |
2304 | assert_return(j, -EINVAL); |
2305 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2306 | |
a963990f LP |
2307 | if (j->inotify_fd < 0) { |
2308 | ||
2309 | /* This is the first invocation, hence create the | |
2310 | * inotify watch */ | |
2311 | r = sd_journal_get_fd(j); | |
2312 | if (r < 0) | |
2313 | return r; | |
2314 | ||
2315 | /* The journal might have changed since the context | |
2316 | * object was created and we weren't watching before, | |
2317 | * hence don't wait for anything, and return | |
2318 | * immediately. */ | |
2319 | return determine_change(j); | |
2320 | } | |
2321 | ||
39c155ea LP |
2322 | r = sd_journal_get_timeout(j, &t); |
2323 | if (r < 0) | |
2324 | return r; | |
2325 | ||
2326 | if (t != (uint64_t) -1) { | |
2327 | usec_t n; | |
2328 | ||
2329 | n = now(CLOCK_MONOTONIC); | |
2330 | t = t > n ? t - n : 0; | |
85210bff | 2331 | |
39c155ea LP |
2332 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2333 | timeout_usec = t; | |
85210bff LP |
2334 | } |
2335 | ||
a963990f LP |
2336 | do { |
2337 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2338 | } while (r == -EINTR); | |
e02d1cf7 LP |
2339 | |
2340 | if (r < 0) | |
2341 | return r; | |
2342 | ||
a963990f | 2343 | return sd_journal_process(j); |
e02d1cf7 LP |
2344 | } |
2345 | ||
08984293 LP |
2346 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
2347 | Iterator i; | |
2348 | JournalFile *f; | |
2349 | bool first = true; | |
581483bf | 2350 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2351 | int r; |
2352 | ||
1ae464e0 TA |
2353 | assert_return(j, -EINVAL); |
2354 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2355 | assert_return(from || to, -EINVAL); | |
2356 | assert_return(from != to, -EINVAL); | |
08984293 LP |
2357 | |
2358 | HASHMAP_FOREACH(f, j->files, i) { | |
2359 | usec_t fr, t; | |
2360 | ||
2361 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2362 | if (r == -ENOENT) |
2363 | continue; | |
08984293 LP |
2364 | if (r < 0) |
2365 | return r; | |
2366 | if (r == 0) | |
2367 | continue; | |
2368 | ||
2369 | if (first) { | |
581483bf LP |
2370 | fmin = fr; |
2371 | tmax = t; | |
08984293 LP |
2372 | first = false; |
2373 | } else { | |
581483bf LP |
2374 | fmin = MIN(fr, fmin); |
2375 | tmax = MAX(t, tmax); | |
08984293 LP |
2376 | } |
2377 | } | |
2378 | ||
581483bf LP |
2379 | if (from) |
2380 | *from = fmin; | |
2381 | if (to) | |
2382 | *to = tmax; | |
2383 | ||
08984293 LP |
2384 | return first ? 0 : 1; |
2385 | } | |
2386 | ||
2387 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
2388 | Iterator i; | |
2389 | JournalFile *f; | |
2390 | bool first = true; | |
2391 | int r; | |
2392 | ||
1ae464e0 TA |
2393 | assert_return(j, -EINVAL); |
2394 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2395 | assert_return(from || to, -EINVAL); | |
2396 | assert_return(from != to, -EINVAL); | |
08984293 LP |
2397 | |
2398 | HASHMAP_FOREACH(f, j->files, i) { | |
2399 | usec_t fr, t; | |
2400 | ||
2401 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2402 | if (r == -ENOENT) |
2403 | continue; | |
08984293 LP |
2404 | if (r < 0) |
2405 | return r; | |
2406 | if (r == 0) | |
2407 | continue; | |
2408 | ||
2409 | if (first) { | |
2410 | if (from) | |
2411 | *from = fr; | |
2412 | if (to) | |
2413 | *to = t; | |
2414 | first = false; | |
2415 | } else { | |
2416 | if (from) | |
2417 | *from = MIN(fr, *from); | |
2418 | if (to) | |
0f91dd87 | 2419 | *to = MAX(t, *to); |
08984293 LP |
2420 | } |
2421 | } | |
2422 | ||
2423 | return first ? 0 : 1; | |
2424 | } | |
2425 | ||
dca6219e LP |
2426 | void journal_print_header(sd_journal *j) { |
2427 | Iterator i; | |
2428 | JournalFile *f; | |
2429 | bool newline = false; | |
2430 | ||
2431 | assert(j); | |
2432 | ||
2433 | HASHMAP_FOREACH(f, j->files, i) { | |
2434 | if (newline) | |
2435 | putchar('\n'); | |
2436 | else | |
2437 | newline = true; | |
2438 | ||
2439 | journal_file_print_header(f); | |
2440 | } | |
2441 | } | |
08984293 | 2442 | |
a1a03e30 LP |
2443 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
2444 | Iterator i; | |
2445 | JournalFile *f; | |
2446 | uint64_t sum = 0; | |
2447 | ||
1ae464e0 TA |
2448 | assert_return(j, -EINVAL); |
2449 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2450 | assert_return(bytes, -EINVAL); | |
a1a03e30 LP |
2451 | |
2452 | HASHMAP_FOREACH(f, j->files, i) { | |
2453 | struct stat st; | |
2454 | ||
2455 | if (fstat(f->fd, &st) < 0) | |
2456 | return -errno; | |
2457 | ||
2458 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2459 | } | |
2460 | ||
2461 | *bytes = sum; | |
2462 | return 0; | |
2463 | } | |
2464 | ||
3c1668da LP |
2465 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2466 | char *f; | |
2467 | ||
1ae464e0 TA |
2468 | assert_return(j, -EINVAL); |
2469 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2470 | assert_return(!isempty(field), -EINVAL); | |
2471 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2472 | |
2473 | f = strdup(field); | |
2474 | if (!f) | |
2475 | return -ENOMEM; | |
2476 | ||
2477 | free(j->unique_field); | |
2478 | j->unique_field = f; | |
2479 | j->unique_file = NULL; | |
2480 | j->unique_offset = 0; | |
2481 | ||
2482 | return 0; | |
2483 | } | |
2484 | ||
2485 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2486 | size_t k; |
19a2bd80 | 2487 | |
1ae464e0 TA |
2488 | assert_return(j, -EINVAL); |
2489 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2490 | assert_return(data, -EINVAL); | |
2491 | assert_return(l, -EINVAL); | |
2492 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2493 | |
3c1668da | 2494 | k = strlen(j->unique_field); |
19a2bd80 | 2495 | |
3c1668da LP |
2496 | if (!j->unique_file) { |
2497 | j->unique_file = hashmap_first(j->files); | |
2498 | if (!j->unique_file) | |
2499 | return 0; | |
2500 | j->unique_offset = 0; | |
2501 | } | |
19a2bd80 | 2502 | |
3c1668da LP |
2503 | for (;;) { |
2504 | JournalFile *of; | |
2505 | Iterator i; | |
ae97089d | 2506 | Object *o; |
3c1668da LP |
2507 | const void *odata; |
2508 | size_t ol; | |
2509 | bool found; | |
ae97089d | 2510 | int r; |
3c1668da | 2511 | |
bdc02927 | 2512 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2513 | if (j->unique_offset == 0) { |
2514 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2515 | if (r < 0) | |
2516 | return r; | |
2517 | ||
2518 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2519 | } else { | |
2520 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2521 | if (r < 0) | |
2522 | return r; | |
2523 | ||
2524 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2525 | } | |
2526 | ||
2527 | /* We reached the end of the list? Then start again, with the next file */ | |
2528 | if (j->unique_offset == 0) { | |
2529 | JournalFile *n; | |
2530 | ||
2531 | n = hashmap_next(j->files, j->unique_file->path); | |
2532 | if (!n) | |
2533 | return 0; | |
2534 | ||
2535 | j->unique_file = n; | |
2536 | continue; | |
2537 | } | |
2538 | ||
2539 | /* We do not use the type context here, but 0 instead, | |
2540 | * so that we can look at this data object at the same | |
2541 | * time as one on another file */ | |
2542 | r = journal_file_move_to_object(j->unique_file, 0, j->unique_offset, &o); | |
2543 | if (r < 0) | |
2544 | return r; | |
2545 | ||
2546 | /* Let's do the type check by hand, since we used 0 context above. */ | |
ae97089d ZJS |
2547 | if (o->object.type != OBJECT_DATA) { |
2548 | log_error("%s:offset " OFSfmt ": object has type %d, expected %d", | |
2549 | j->unique_file->path, j->unique_offset, | |
2550 | o->object.type, OBJECT_DATA); | |
3c1668da | 2551 | return -EBADMSG; |
ae97089d ZJS |
2552 | } |
2553 | ||
2554 | r = journal_file_object_keep(j->unique_file, o, j->unique_offset); | |
2555 | if (r < 0) | |
2556 | return r; | |
3c1668da | 2557 | |
93b73b06 | 2558 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2559 | if (r < 0) |
2560 | return r; | |
2561 | ||
2562 | /* OK, now let's see if we already returned this data | |
2563 | * object by checking if it exists in the earlier | |
2564 | * traversed files. */ | |
2565 | found = false; | |
2566 | HASHMAP_FOREACH(of, j->files, i) { | |
2567 | Object *oo; | |
2568 | uint64_t op; | |
2569 | ||
2570 | if (of == j->unique_file) | |
2571 | break; | |
2572 | ||
2573 | /* Skip this file it didn't have any fields | |
2574 | * indexed */ | |
2575 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && | |
2576 | le64toh(of->header->n_fields) <= 0) | |
2577 | continue; | |
2578 | ||
2579 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), &oo, &op); | |
2580 | if (r < 0) | |
2581 | return r; | |
2582 | ||
2583 | if (r > 0) | |
2584 | found = true; | |
2585 | } | |
2586 | ||
2587 | if (found) | |
2588 | continue; | |
2589 | ||
ae97089d ZJS |
2590 | r = journal_file_object_release(j->unique_file, o, j->unique_offset); |
2591 | if (r < 0) | |
2592 | return r; | |
2593 | ||
93b73b06 | 2594 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2595 | if (r < 0) |
2596 | return r; | |
2597 | ||
2598 | return 1; | |
2599 | } | |
2600 | } | |
2601 | ||
115646c7 | 2602 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2603 | if (!j) |
2604 | return; | |
2605 | ||
2606 | j->unique_file = NULL; | |
2607 | j->unique_offset = 0; | |
2608 | } | |
85210bff LP |
2609 | |
2610 | _public_ int sd_journal_reliable_fd(sd_journal *j) { | |
1ae464e0 TA |
2611 | assert_return(j, -EINVAL); |
2612 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
2613 | |
2614 | return !j->on_network; | |
2615 | } | |
d4205751 LP |
2616 | |
2617 | static char *lookup_field(const char *field, void *userdata) { | |
2618 | sd_journal *j = userdata; | |
2619 | const void *data; | |
2620 | size_t size, d; | |
2621 | int r; | |
2622 | ||
2623 | assert(field); | |
2624 | assert(j); | |
2625 | ||
2626 | r = sd_journal_get_data(j, field, &data, &size); | |
2627 | if (r < 0 || | |
2628 | size > REPLACE_VAR_MAX) | |
2629 | return strdup(field); | |
2630 | ||
2631 | d = strlen(field) + 1; | |
2632 | ||
2633 | return strndup((const char*) data + d, size - d); | |
2634 | } | |
2635 | ||
2636 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
2637 | const void *data; | |
2638 | size_t size; | |
2639 | sd_id128_t id; | |
2640 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
2641 | char *t; | |
2642 | int r; | |
2643 | ||
1ae464e0 TA |
2644 | assert_return(j, -EINVAL); |
2645 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2646 | assert_return(ret, -EINVAL); | |
d4205751 LP |
2647 | |
2648 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
2649 | if (r < 0) | |
2650 | return r; | |
2651 | ||
2652 | cid = strndup((const char*) data + 11, size - 11); | |
2653 | if (!cid) | |
2654 | return -ENOMEM; | |
2655 | ||
2656 | r = sd_id128_from_string(cid, &id); | |
2657 | if (r < 0) | |
2658 | return r; | |
2659 | ||
844ec79b | 2660 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
2661 | if (r < 0) |
2662 | return r; | |
2663 | ||
2664 | t = replace_var(text, lookup_field, j); | |
2665 | if (!t) | |
2666 | return -ENOMEM; | |
2667 | ||
2668 | *ret = t; | |
2669 | return 0; | |
2670 | } | |
8f1e860f LP |
2671 | |
2672 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 2673 | assert_return(ret, -EINVAL); |
8f1e860f | 2674 | |
844ec79b | 2675 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 2676 | } |
93b73b06 LP |
2677 | |
2678 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
2679 | assert_return(j, -EINVAL); |
2680 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
2681 | |
2682 | j->data_threshold = sz; | |
2683 | return 0; | |
2684 | } | |
2685 | ||
2686 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
2687 | assert_return(j, -EINVAL); |
2688 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2689 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
2690 | |
2691 | *sz = j->data_threshold; | |
2692 | return 0; | |
2693 | } |