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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
87d2c1ff | 2 | |
87d2c1ff | 3 | #include <errno.h> |
87d2c1ff | 4 | #include <fcntl.h> |
82e24b00 | 5 | #include <inttypes.h> |
07630cea LP |
6 | #include <linux/magic.h> |
7 | #include <poll.h> | |
3fbf9cbb | 8 | #include <stddef.h> |
50f20cfd | 9 | #include <sys/inotify.h> |
85210bff | 10 | #include <sys/vfs.h> |
07630cea | 11 | #include <unistd.h> |
87d2c1ff LP |
12 | |
13 | #include "sd-journal.h" | |
c004493c | 14 | |
b5efdb8a | 15 | #include "alloc-util.h" |
07630cea LP |
16 | #include "catalog.h" |
17 | #include "compress.h" | |
a0956174 | 18 | #include "dirent-util.h" |
686d13b9 | 19 | #include "env-file.h" |
9e8b1ec0 | 20 | #include "escape.h" |
3ffd4af2 | 21 | #include "fd-util.h" |
07630cea | 22 | #include "fileio.h" |
f97b34a6 | 23 | #include "format-util.h" |
77601719 | 24 | #include "fs-util.h" |
07630cea LP |
25 | #include "hashmap.h" |
26 | #include "hostname-util.h" | |
a9be0692 | 27 | #include "id128-util.h" |
c004493c | 28 | #include "io-util.h" |
87d2c1ff | 29 | #include "journal-def.h" |
cec736d2 | 30 | #include "journal-file.h" |
07630cea | 31 | #include "journal-internal.h" |
cec736d2 | 32 | #include "list.h" |
de7b95cd | 33 | #include "lookup3.h" |
d8b4d14d | 34 | #include "nulstr-util.h" |
07630cea | 35 | #include "path-util.h" |
dccca82b | 36 | #include "process-util.h" |
d4205751 | 37 | #include "replace-var.h" |
15a5e950 LP |
38 | #include "stat-util.h" |
39 | #include "stdio-util.h" | |
07630cea LP |
40 | #include "string-util.h" |
41 | #include "strv.h" | |
456aa879 | 42 | #include "syslog-util.h" |
87d2c1ff | 43 | |
9e8abdf0 LP |
44 | #define JOURNAL_FILES_MAX 7168 |
45 | ||
85210bff LP |
46 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
47 | ||
8dd7cbce LP |
48 | /* The maximum size of variable values we'll expand in catalog entries. We bind this to PATH_MAX for now, as |
49 | * we want to be able to show all officially valid paths at least */ | |
50 | #define REPLACE_VAR_MAX PATH_MAX | |
d4205751 | 51 | |
93b73b06 LP |
52 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
53 | ||
a9a245c1 ZJS |
54 | static void remove_file_real(sd_journal *j, JournalFile *f); |
55 | ||
a65f06bb ZJS |
56 | static bool journal_pid_changed(sd_journal *j) { |
57 | assert(j); | |
58 | ||
59 | /* We don't support people creating a journal object and | |
60 | * keeping it around over a fork(). Let's complain. */ | |
61 | ||
df0ff127 | 62 | return j->original_pid != getpid_cached(); |
a65f06bb ZJS |
63 | } |
64 | ||
5768d259 LP |
65 | static int journal_put_error(sd_journal *j, int r, const char *path) { |
66 | char *copy; | |
3ac251b8 LP |
67 | int k; |
68 | ||
5768d259 LP |
69 | /* Memorize an error we encountered, and store which |
70 | * file/directory it was generated from. Note that we store | |
71 | * only *one* path per error code, as the error code is the | |
72 | * key into the hashmap, and the path is the value. This means | |
73 | * we keep track only of all error kinds, but not of all error | |
74 | * locations. This has the benefit that the hashmap cannot | |
75 | * grow beyond bounds. | |
76 | * | |
77 | * We return an error here only if we didn't manage to | |
78 | * memorize the real error. */ | |
79 | ||
6fe391c5 ZJS |
80 | if (r >= 0) |
81 | return r; | |
82 | ||
5768d259 | 83 | k = hashmap_ensure_allocated(&j->errors, NULL); |
3ac251b8 LP |
84 | if (k < 0) |
85 | return k; | |
86 | ||
5768d259 LP |
87 | if (path) { |
88 | copy = strdup(path); | |
89 | if (!copy) | |
90 | return -ENOMEM; | |
91 | } else | |
92 | copy = NULL; | |
93 | ||
94 | k = hashmap_put(j->errors, INT_TO_PTR(r), copy); | |
95 | if (k < 0) { | |
96 | free(copy); | |
97 | ||
98 | if (k == -EEXIST) | |
99 | return 0; | |
100 | ||
101 | return k; | |
102 | } | |
103 | ||
104 | return 0; | |
6fe391c5 ZJS |
105 | } |
106 | ||
de190aef | 107 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
108 | JournalFile *f; |
109 | ||
110 | assert(j); | |
111 | ||
112 | j->current_file = NULL; | |
113 | j->current_field = 0; | |
114 | ||
90e74a66 | 115 | ORDERED_HASHMAP_FOREACH(f, j->files) |
1fc605b0 | 116 | journal_file_reset_location(f); |
8f9b6cd9 LP |
117 | } |
118 | ||
a87247dd | 119 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 120 | assert(l); |
3742095b | 121 | assert(IN_SET(type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef | 122 | assert(f); |
de190aef | 123 | |
bba6e4ae LP |
124 | *l = (Location) { |
125 | .type = type, | |
126 | .seqnum = le64toh(o->entry.seqnum), | |
127 | .seqnum_id = f->header->seqnum_id, | |
128 | .realtime = le64toh(o->entry.realtime), | |
129 | .monotonic = le64toh(o->entry.monotonic), | |
130 | .boot_id = o->entry.boot_id, | |
131 | .xor_hash = le64toh(o->entry.xor_hash), | |
132 | .seqnum_set = true, | |
133 | .realtime_set = true, | |
134 | .monotonic_set = true, | |
135 | .xor_hash_set = true, | |
136 | }; | |
de190aef LP |
137 | } |
138 | ||
1eb6332d | 139 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
140 | assert(j); |
141 | assert(f); | |
142 | assert(o); | |
143 | ||
1eb6332d | 144 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
145 | |
146 | j->current_file = f; | |
147 | j->current_field = 0; | |
148 | ||
6573ef05 MS |
149 | /* Let f know its candidate entry was picked. */ |
150 | assert(f->location_type == LOCATION_SEEK); | |
151 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
152 | } |
153 | ||
cbdca852 LP |
154 | static int match_is_valid(const void *data, size_t size) { |
155 | const char *b, *p; | |
156 | ||
157 | assert(data); | |
158 | ||
159 | if (size < 2) | |
160 | return false; | |
161 | ||
e0567bc8 | 162 | if (((char*) data)[0] == '_' && ((char*) data)[1] == '_') |
cbdca852 LP |
163 | return false; |
164 | ||
165 | b = data; | |
166 | for (p = b; p < b + size; p++) { | |
167 | ||
168 | if (*p == '=') | |
169 | return p > b; | |
170 | ||
171 | if (*p == '_') | |
172 | continue; | |
173 | ||
174 | if (*p >= 'A' && *p <= 'Z') | |
175 | continue; | |
176 | ||
177 | if (*p >= '0' && *p <= '9') | |
178 | continue; | |
179 | ||
180 | return false; | |
181 | } | |
182 | ||
183 | return false; | |
184 | } | |
185 | ||
186 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
187 | const uint8_t *a = _a, *b = _b; |
188 | size_t j; | |
de190aef LP |
189 | |
190 | for (j = 0; j < s && j < t; j++) { | |
191 | ||
de190aef | 192 | if (a[j] != b[j]) |
cbdca852 | 193 | return false; |
de190aef | 194 | |
cbdca852 LP |
195 | if (a[j] == '=') |
196 | return true; | |
de190aef LP |
197 | } |
198 | ||
bc302926 | 199 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
200 | } |
201 | ||
202 | static Match *match_new(Match *p, MatchType t) { | |
203 | Match *m; | |
204 | ||
2f5435a1 | 205 | m = new(Match, 1); |
cbdca852 LP |
206 | if (!m) |
207 | return NULL; | |
208 | ||
2f5435a1 LP |
209 | *m = (Match) { |
210 | .type = t, | |
211 | .parent = p, | |
212 | }; | |
cbdca852 | 213 | |
2f5435a1 | 214 | if (p) |
71fda00f | 215 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
216 | |
217 | return m; | |
218 | } | |
219 | ||
220 | static void match_free(Match *m) { | |
221 | assert(m); | |
222 | ||
223 | while (m->matches) | |
224 | match_free(m->matches); | |
225 | ||
226 | if (m->parent) | |
71fda00f | 227 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
228 | |
229 | free(m->data); | |
230 | free(m); | |
231 | } | |
232 | ||
233 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 234 | if (!m || m->matches) |
cbdca852 LP |
235 | return; |
236 | ||
237 | match_free(m); | |
de190aef LP |
238 | } |
239 | ||
a5344d2c | 240 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 241 | Match *l3, *l4, *add_here = NULL, *m; |
cde8c5f7 | 242 | uint64_t hash; |
87d2c1ff | 243 | |
1ae464e0 TA |
244 | assert_return(j, -EINVAL); |
245 | assert_return(!journal_pid_changed(j), -ECHILD); | |
246 | assert_return(data, -EINVAL); | |
cbdca852 LP |
247 | |
248 | if (size == 0) | |
249 | size = strlen(data); | |
250 | ||
1ae464e0 | 251 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 252 | |
cd34b3c6 HH |
253 | /* level 0: AND term |
254 | * level 1: OR terms | |
255 | * level 2: AND terms | |
256 | * level 3: OR terms | |
257 | * level 4: concrete matches */ | |
cbdca852 LP |
258 | |
259 | if (!j->level0) { | |
cd34b3c6 | 260 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
261 | if (!j->level0) |
262 | return -ENOMEM; | |
263 | } | |
264 | ||
265 | if (!j->level1) { | |
cd34b3c6 | 266 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
267 | if (!j->level1) |
268 | return -ENOMEM; | |
269 | } | |
270 | ||
cd34b3c6 HH |
271 | if (!j->level2) { |
272 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
273 | if (!j->level2) | |
274 | return -ENOMEM; | |
275 | } | |
276 | ||
277 | assert(j->level0->type == MATCH_AND_TERM); | |
278 | assert(j->level1->type == MATCH_OR_TERM); | |
279 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 280 | |
4ce534f4 LP |
281 | /* Old-style Jenkins (unkeyed) hashing only here. We do not cover new-style siphash (keyed) hashing |
282 | * here, since it's different for each file, and thus can't be pre-calculated in the Match object. */ | |
20b0acfa | 283 | hash = jenkins_hash64(data, size); |
de190aef | 284 | |
cd34b3c6 HH |
285 | LIST_FOREACH(matches, l3, j->level2->matches) { |
286 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 287 | |
cd34b3c6 HH |
288 | LIST_FOREACH(matches, l4, l3->matches) { |
289 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 290 | |
cbdca852 LP |
291 | /* Exactly the same match already? Then ignore |
292 | * this addition */ | |
cde8c5f7 | 293 | if (l4->hash == hash && |
cd34b3c6 HH |
294 | l4->size == size && |
295 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
296 | return 0; |
297 | ||
298 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
299 | if (same_field(data, size, l4->data, l4->size)) { |
300 | add_here = l3; | |
cbdca852 LP |
301 | break; |
302 | } | |
303 | } | |
304 | ||
305 | if (add_here) | |
306 | break; | |
de190aef LP |
307 | } |
308 | ||
cbdca852 | 309 | if (!add_here) { |
cd34b3c6 | 310 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
311 | if (!add_here) |
312 | goto fail; | |
313 | } | |
314 | ||
315 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 316 | if (!m) |
cbdca852 | 317 | goto fail; |
87d2c1ff | 318 | |
cde8c5f7 | 319 | m->hash = hash; |
1cc101f1 | 320 | m->size = size; |
cbdca852 LP |
321 | m->data = memdup(data, size); |
322 | if (!m->data) | |
323 | goto fail; | |
324 | ||
325 | detach_location(j); | |
326 | ||
327 | return 0; | |
328 | ||
329 | fail: | |
c5a10d9c ZJS |
330 | match_free_if_empty(add_here); |
331 | match_free_if_empty(j->level2); | |
332 | match_free_if_empty(j->level1); | |
333 | match_free_if_empty(j->level0); | |
cbdca852 LP |
334 | |
335 | return -ENOMEM; | |
336 | } | |
337 | ||
cd34b3c6 | 338 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
339 | assert_return(j, -EINVAL); |
340 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 341 | |
cbdca852 LP |
342 | if (!j->level0) |
343 | return 0; | |
344 | ||
345 | if (!j->level1) | |
346 | return 0; | |
347 | ||
348 | if (!j->level1->matches) | |
349 | return 0; | |
350 | ||
cd34b3c6 HH |
351 | j->level1 = NULL; |
352 | j->level2 = NULL; | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
358 | assert_return(j, -EINVAL); |
359 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
360 | |
361 | if (!j->level0) | |
362 | return 0; | |
363 | ||
364 | if (!j->level1) | |
365 | return 0; | |
366 | ||
367 | if (!j->level2) | |
368 | return 0; | |
369 | ||
370 | if (!j->level2->matches) | |
371 | return 0; | |
cbdca852 | 372 | |
cd34b3c6 | 373 | j->level2 = NULL; |
cbdca852 LP |
374 | return 0; |
375 | } | |
376 | ||
377 | static char *match_make_string(Match *m) { | |
6b430fdb | 378 | char *p = NULL, *r; |
cbdca852 LP |
379 | Match *i; |
380 | bool enclose = false; | |
381 | ||
382 | if (!m) | |
4ad16808 | 383 | return strdup("none"); |
cbdca852 LP |
384 | |
385 | if (m->type == MATCH_DISCRETE) | |
9e8b1ec0 | 386 | return cescape_length(m->data, m->size); |
cbdca852 | 387 | |
cbdca852 LP |
388 | LIST_FOREACH(matches, i, m->matches) { |
389 | char *t, *k; | |
390 | ||
391 | t = match_make_string(i); | |
6b430fdb ZJS |
392 | if (!t) |
393 | return mfree(p); | |
cbdca852 LP |
394 | |
395 | if (p) { | |
605405c6 | 396 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t); |
cbdca852 LP |
397 | free(p); |
398 | free(t); | |
399 | ||
400 | if (!k) | |
401 | return NULL; | |
402 | ||
403 | p = k; | |
404 | ||
405 | enclose = true; | |
bc302926 | 406 | } else |
cbdca852 | 407 | p = t; |
87d2c1ff LP |
408 | } |
409 | ||
cbdca852 | 410 | if (enclose) { |
605405c6 | 411 | r = strjoin("(", p, ")"); |
cbdca852 LP |
412 | free(p); |
413 | return r; | |
414 | } | |
87d2c1ff | 415 | |
cbdca852 LP |
416 | return p; |
417 | } | |
de7b95cd | 418 | |
cbdca852 LP |
419 | char *journal_make_match_string(sd_journal *j) { |
420 | assert(j); | |
8f9b6cd9 | 421 | |
cbdca852 | 422 | return match_make_string(j->level0); |
87d2c1ff LP |
423 | } |
424 | ||
a5344d2c LP |
425 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
426 | if (!j) | |
427 | return; | |
87d2c1ff | 428 | |
cbdca852 LP |
429 | if (j->level0) |
430 | match_free(j->level0); | |
de7b95cd | 431 | |
cd34b3c6 | 432 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 433 | |
de190aef | 434 | detach_location(j); |
87d2c1ff LP |
435 | } |
436 | ||
b6849042 | 437 | _pure_ static int compare_with_location(const JournalFile *f, const Location *l, const JournalFile *current_file) { |
90c88092 YW |
438 | int r; |
439 | ||
487d3720 | 440 | assert(f); |
de190aef | 441 | assert(l); |
487d3720 | 442 | assert(f->location_type == LOCATION_SEEK); |
4c701096 | 443 | assert(IN_SET(l->type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef LP |
444 | |
445 | if (l->monotonic_set && | |
487d3720 | 446 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 447 | l->realtime_set && |
487d3720 | 448 | f->current_realtime == l->realtime && |
de190aef | 449 | l->xor_hash_set && |
b6849042 GM |
450 | f->current_xor_hash == l->xor_hash && |
451 | f != current_file) | |
de190aef LP |
452 | return 0; |
453 | ||
454 | if (l->seqnum_set && | |
487d3720 | 455 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 456 | |
90c88092 YW |
457 | r = CMP(f->current_seqnum, l->seqnum); |
458 | if (r != 0) | |
459 | return r; | |
de190aef LP |
460 | } |
461 | ||
462 | if (l->monotonic_set && | |
487d3720 | 463 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 464 | |
90c88092 YW |
465 | r = CMP(f->current_monotonic, l->monotonic); |
466 | if (r != 0) | |
467 | return r; | |
de190aef LP |
468 | } |
469 | ||
470 | if (l->realtime_set) { | |
471 | ||
90c88092 YW |
472 | r = CMP(f->current_realtime, l->realtime); |
473 | if (r != 0) | |
474 | return r; | |
de190aef LP |
475 | } |
476 | ||
477 | if (l->xor_hash_set) { | |
de190aef | 478 | |
90c88092 YW |
479 | r = CMP(f->current_xor_hash, l->xor_hash); |
480 | if (r != 0) | |
481 | return r; | |
de190aef LP |
482 | } |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
cbdca852 LP |
487 | static int next_for_match( |
488 | sd_journal *j, | |
489 | Match *m, | |
490 | JournalFile *f, | |
491 | uint64_t after_offset, | |
492 | direction_t direction, | |
493 | Object **ret, | |
494 | uint64_t *offset) { | |
495 | ||
de7b95cd | 496 | int r; |
cbdca852 LP |
497 | uint64_t np = 0; |
498 | Object *n; | |
de7b95cd LP |
499 | |
500 | assert(j); | |
cbdca852 LP |
501 | assert(m); |
502 | assert(f); | |
de7b95cd | 503 | |
cbdca852 | 504 | if (m->type == MATCH_DISCRETE) { |
4ce534f4 | 505 | uint64_t dp, hash; |
de190aef | 506 | |
4ce534f4 LP |
507 | /* If the keyed hash logic is used, we need to calculate the hash fresh per file. Otherwise |
508 | * we can use what we pre-calculated. */ | |
509 | if (JOURNAL_HEADER_KEYED_HASH(f->header)) | |
510 | hash = journal_file_hash_data(f, m->data, m->size); | |
511 | else | |
512 | hash = m->hash; | |
513 | ||
514 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, hash, NULL, &dp); | |
de190aef LP |
515 | if (r <= 0) |
516 | return r; | |
517 | ||
cbdca852 | 518 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 519 | |
cbdca852 LP |
520 | } else if (m->type == MATCH_OR_TERM) { |
521 | Match *i; | |
de7b95cd | 522 | |
cbdca852 | 523 | /* Find the earliest match beyond after_offset */ |
de190aef | 524 | |
cbdca852 LP |
525 | LIST_FOREACH(matches, i, m->matches) { |
526 | uint64_t cp; | |
de190aef | 527 | |
cbdca852 | 528 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
529 | if (r < 0) |
530 | return r; | |
cbdca852 | 531 | else if (r > 0) { |
bc302926 | 532 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
533 | np = cp; |
534 | } | |
535 | } | |
b4e5f920 | 536 | |
bc302926 ZJS |
537 | if (np == 0) |
538 | return 0; | |
539 | ||
cbdca852 | 540 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 541 | Match *i, *last_moved; |
de190aef | 542 | |
cbdca852 | 543 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 544 | * this until we find an offset that matches for all |
cbdca852 | 545 | * matches. */ |
de190aef | 546 | |
cbdca852 LP |
547 | if (!m->matches) |
548 | return 0; | |
de7b95cd | 549 | |
2bc8ca0c ZJS |
550 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
551 | if (r <= 0) | |
552 | return r; | |
de190aef | 553 | |
2bc8ca0c ZJS |
554 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
555 | last_moved = m->matches; | |
de190aef | 556 | |
2bc8ca0c ZJS |
557 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
558 | uint64_t cp; | |
de190aef | 559 | |
2bc8ca0c ZJS |
560 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
561 | if (r <= 0) | |
562 | return r; | |
de190aef | 563 | |
2bc8ca0c ZJS |
564 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
565 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
566 | np = cp; | |
567 | last_moved = i; | |
de190aef | 568 | } |
2bc8ca0c | 569 | } |
cbdca852 | 570 | } |
de190aef | 571 | |
bc302926 | 572 | assert(np > 0); |
de190aef | 573 | |
cbdca852 LP |
574 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
575 | if (r < 0) | |
576 | return r; | |
de7b95cd | 577 | |
de190aef | 578 | if (ret) |
cbdca852 | 579 | *ret = n; |
de190aef | 580 | if (offset) |
cbdca852 | 581 | *offset = np; |
de190aef LP |
582 | |
583 | return 1; | |
584 | } | |
585 | ||
cbdca852 LP |
586 | static int find_location_for_match( |
587 | sd_journal *j, | |
588 | Match *m, | |
589 | JournalFile *f, | |
590 | direction_t direction, | |
591 | Object **ret, | |
592 | uint64_t *offset) { | |
593 | ||
de190aef | 594 | int r; |
de190aef LP |
595 | |
596 | assert(j); | |
cbdca852 | 597 | assert(m); |
de190aef | 598 | assert(f); |
de190aef | 599 | |
cbdca852 | 600 | if (m->type == MATCH_DISCRETE) { |
4ce534f4 LP |
601 | uint64_t dp, hash; |
602 | ||
603 | if (JOURNAL_HEADER_KEYED_HASH(f->header)) | |
604 | hash = journal_file_hash_data(f, m->data, m->size); | |
605 | else | |
606 | hash = m->hash; | |
de190aef | 607 | |
4ce534f4 | 608 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, hash, NULL, &dp); |
de7b95cd LP |
609 | if (r <= 0) |
610 | return r; | |
611 | ||
cbdca852 | 612 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 613 | |
cbdca852 LP |
614 | if (j->current_location.type == LOCATION_HEAD) |
615 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
616 | if (j->current_location.type == LOCATION_TAIL) | |
617 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
618 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
619 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
620 | if (j->current_location.monotonic_set) { | |
621 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
622 | if (r != -ENOENT) | |
623 | return r; | |
624 | } | |
625 | if (j->current_location.realtime_set) | |
626 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 627 | |
cbdca852 | 628 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 629 | |
cbdca852 LP |
630 | } else if (m->type == MATCH_OR_TERM) { |
631 | uint64_t np = 0; | |
632 | Object *n; | |
633 | Match *i; | |
de7b95cd | 634 | |
cbdca852 | 635 | /* Find the earliest match */ |
de7b95cd | 636 | |
cbdca852 LP |
637 | LIST_FOREACH(matches, i, m->matches) { |
638 | uint64_t cp; | |
639 | ||
640 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
641 | if (r < 0) | |
642 | return r; | |
643 | else if (r > 0) { | |
644 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
645 | np = cp; | |
de190aef | 646 | } |
cbdca852 | 647 | } |
de190aef | 648 | |
cbdca852 LP |
649 | if (np == 0) |
650 | return 0; | |
de7b95cd | 651 | |
cbdca852 LP |
652 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
653 | if (r < 0) | |
654 | return r; | |
de7b95cd | 655 | |
cbdca852 LP |
656 | if (ret) |
657 | *ret = n; | |
658 | if (offset) | |
659 | *offset = np; | |
de190aef | 660 | |
cbdca852 | 661 | return 1; |
e892bd17 | 662 | |
cbdca852 LP |
663 | } else { |
664 | Match *i; | |
665 | uint64_t np = 0; | |
666 | ||
667 | assert(m->type == MATCH_AND_TERM); | |
668 | ||
669 | /* First jump to the last match, and then find the | |
670 | * next one where all matches match */ | |
671 | ||
672 | if (!m->matches) | |
673 | return 0; | |
674 | ||
675 | LIST_FOREACH(matches, i, m->matches) { | |
676 | uint64_t cp; | |
677 | ||
678 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
679 | if (r <= 0) | |
4b067dc9 LP |
680 | return r; |
681 | ||
bc302926 | 682 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 683 | np = cp; |
de7b95cd LP |
684 | } |
685 | ||
cbdca852 LP |
686 | return next_for_match(j, m, f, np, direction, ret, offset); |
687 | } | |
688 | } | |
de190aef | 689 | |
cbdca852 LP |
690 | static int find_location_with_matches( |
691 | sd_journal *j, | |
692 | JournalFile *f, | |
693 | direction_t direction, | |
694 | Object **ret, | |
695 | uint64_t *offset) { | |
696 | ||
697 | int r; | |
698 | ||
699 | assert(j); | |
700 | assert(f); | |
701 | assert(ret); | |
702 | assert(offset); | |
703 | ||
704 | if (!j->level0) { | |
705 | /* No matches is simple */ | |
706 | ||
707 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 708 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 709 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 710 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
711 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
712 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
713 | if (j->current_location.monotonic_set) { | |
714 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
715 | if (r != -ENOENT) | |
716 | return r; | |
de7b95cd | 717 | } |
cbdca852 LP |
718 | if (j->current_location.realtime_set) |
719 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 720 | |
f534928a | 721 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
722 | } else |
723 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
724 | } | |
de7b95cd | 725 | |
cbdca852 LP |
726 | static int next_with_matches( |
727 | sd_journal *j, | |
728 | JournalFile *f, | |
729 | direction_t direction, | |
730 | Object **ret, | |
731 | uint64_t *offset) { | |
732 | ||
cbdca852 LP |
733 | assert(j); |
734 | assert(f); | |
735 | assert(ret); | |
736 | assert(offset); | |
737 | ||
cbdca852 LP |
738 | /* No matches is easy. We simple advance the file |
739 | * pointer by one. */ | |
740 | if (!j->level0) | |
b29ddfcb | 741 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
742 | |
743 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 744 | * with an offset at least one step larger */ |
b29ddfcb MS |
745 | return next_for_match(j, j->level0, f, |
746 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
747 | : f->current_offset - 1, | |
748 | direction, ret, offset); | |
de7b95cd LP |
749 | } |
750 | ||
58439db4 | 751 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 752 | Object *c; |
6e693b42 | 753 | uint64_t cp, n_entries; |
cbdca852 | 754 | int r; |
de190aef LP |
755 | |
756 | assert(j); | |
757 | assert(f); | |
758 | ||
950c07d4 MS |
759 | n_entries = le64toh(f->header->n_entries); |
760 | ||
761 | /* If we hit EOF before, we don't need to look into this file again | |
762 | * unless direction changed or new entries appeared. */ | |
763 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
764 | n_entries == f->last_n_entries) | |
765 | return 0; | |
668c965a | 766 | |
950c07d4 MS |
767 | f->last_n_entries = n_entries; |
768 | ||
769 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
770 | /* LOCATION_SEEK here means we did the work in a previous |
771 | * iteration and the current location already points to a | |
772 | * candidate entry. */ | |
487d3720 MS |
773 | if (f->location_type != LOCATION_SEEK) { |
774 | r = next_with_matches(j, f, direction, &c, &cp); | |
775 | if (r <= 0) | |
776 | return r; | |
466ccd92 | 777 | |
950c07d4 | 778 | journal_file_save_location(f, c, cp); |
487d3720 | 779 | } |
de190aef | 780 | } else { |
950c07d4 MS |
781 | f->last_direction = direction; |
782 | ||
cbdca852 | 783 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
784 | if (r <= 0) |
785 | return r; | |
487d3720 | 786 | |
950c07d4 | 787 | journal_file_save_location(f, c, cp); |
de190aef LP |
788 | } |
789 | ||
bc302926 | 790 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
791 | * that is actually different from what we were previously |
792 | * looking at. This is necessary to handle entries which exist | |
793 | * in two (or more) journal files, and which shall all be | |
794 | * suppressed but one. */ | |
795 | ||
de190aef LP |
796 | for (;;) { |
797 | bool found; | |
798 | ||
799 | if (j->current_location.type == LOCATION_DISCRETE) { | |
800 | int k; | |
801 | ||
b6849042 | 802 | k = compare_with_location(f, &j->current_location, j->current_file); |
1cdf7175 CH |
803 | |
804 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
805 | } else |
806 | found = true; | |
807 | ||
487d3720 | 808 | if (found) |
de190aef | 809 | return 1; |
de190aef LP |
810 | |
811 | r = next_with_matches(j, f, direction, &c, &cp); | |
812 | if (r <= 0) | |
813 | return r; | |
487d3720 | 814 | |
950c07d4 | 815 | journal_file_save_location(f, c, cp); |
de190aef LP |
816 | } |
817 | } | |
818 | ||
e892bd17 | 819 | static int real_journal_next(sd_journal *j, direction_t direction) { |
5d4ba7f2 VC |
820 | JournalFile *new_file = NULL; |
821 | unsigned i, n_files; | |
822 | const void **files; | |
a002d44b | 823 | Object *o; |
87d2c1ff LP |
824 | int r; |
825 | ||
1ae464e0 TA |
826 | assert_return(j, -EINVAL); |
827 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 828 | |
5d4ba7f2 VC |
829 | r = iterated_cache_get(j->files_cache, NULL, &files, &n_files); |
830 | if (r < 0) | |
831 | return r; | |
832 | ||
833 | for (i = 0; i < n_files; i++) { | |
834 | JournalFile *f = (JournalFile *)files[i]; | |
de190aef | 835 | bool found; |
87d2c1ff | 836 | |
58439db4 | 837 | r = next_beyond_location(j, f, direction); |
e590af26 | 838 | if (r < 0) { |
da927ba9 | 839 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 840 | remove_file_real(j, f); |
e590af26 | 841 | continue; |
6573ef05 MS |
842 | } else if (r == 0) { |
843 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 844 | continue; |
6573ef05 | 845 | } |
87d2c1ff | 846 | |
468b21de | 847 | if (!new_file) |
de190aef LP |
848 | found = true; |
849 | else { | |
850 | int k; | |
851 | ||
d8ae66d7 | 852 | k = journal_file_compare_locations(f, new_file); |
de190aef | 853 | |
bc302926 | 854 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
855 | } |
856 | ||
e499c999 | 857 | if (found) |
468b21de | 858 | new_file = f; |
87d2c1ff LP |
859 | } |
860 | ||
468b21de | 861 | if (!new_file) |
de190aef | 862 | return 0; |
ae2cc8ef | 863 | |
e499c999 | 864 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
865 | if (r < 0) |
866 | return r; | |
867 | ||
1eb6332d | 868 | set_location(j, new_file, o); |
ae2cc8ef | 869 | |
de190aef LP |
870 | return 1; |
871 | } | |
ae2cc8ef | 872 | |
a5344d2c | 873 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
874 | return real_journal_next(j, DIRECTION_DOWN); |
875 | } | |
ae2cc8ef | 876 | |
a5344d2c | 877 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
878 | return real_journal_next(j, DIRECTION_UP); |
879 | } | |
ae2cc8ef | 880 | |
6f003b43 | 881 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 882 | int c = 0, r; |
ae2cc8ef | 883 | |
1ae464e0 TA |
884 | assert_return(j, -EINVAL); |
885 | assert_return(!journal_pid_changed(j), -ECHILD); | |
41d544a1 | 886 | assert_return(skip <= INT_MAX, -ERANGE); |
de190aef | 887 | |
6f003b43 LP |
888 | if (skip == 0) { |
889 | /* If this is not a discrete skip, then at least | |
890 | * resolve the current location */ | |
04884354 LK |
891 | if (j->current_location.type != LOCATION_DISCRETE) { |
892 | r = real_journal_next(j, direction); | |
893 | if (r < 0) | |
894 | return r; | |
895 | } | |
6f003b43 LP |
896 | |
897 | return 0; | |
898 | } | |
899 | ||
900 | do { | |
901 | r = real_journal_next(j, direction); | |
de190aef LP |
902 | if (r < 0) |
903 | return r; | |
904 | ||
905 | if (r == 0) | |
906 | return c; | |
907 | ||
908 | skip--; | |
909 | c++; | |
6f003b43 | 910 | } while (skip > 0); |
87d2c1ff | 911 | |
de190aef | 912 | return c; |
87d2c1ff LP |
913 | } |
914 | ||
6f003b43 LP |
915 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
916 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
917 | } | |
de190aef | 918 | |
6f003b43 LP |
919 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
920 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
921 | } |
922 | ||
a5344d2c | 923 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 924 | Object *o; |
87d2c1ff | 925 | int r; |
5905d7cf | 926 | char bid[SD_ID128_STRING_MAX], sid[SD_ID128_STRING_MAX]; |
87d2c1ff | 927 | |
1ae464e0 TA |
928 | assert_return(j, -EINVAL); |
929 | assert_return(!journal_pid_changed(j), -ECHILD); | |
930 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 931 | |
3fbf9cbb LP |
932 | if (!j->current_file || j->current_file->current_offset <= 0) |
933 | return -EADDRNOTAVAIL; | |
87d2c1ff | 934 | |
de190aef | 935 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
936 | if (r < 0) |
937 | return r; | |
938 | ||
3fbf9cbb LP |
939 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
940 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 941 | |
3fbf9cbb | 942 | if (asprintf(cursor, |
507f22bd ZJS |
943 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
944 | sid, le64toh(o->entry.seqnum), | |
945 | bid, le64toh(o->entry.monotonic), | |
946 | le64toh(o->entry.realtime), | |
947 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 948 | return -ENOMEM; |
87d2c1ff | 949 | |
6f47ad30 | 950 | return 0; |
87d2c1ff LP |
951 | } |
952 | ||
a5344d2c | 953 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
de190aef | 954 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
da277e90 ZJS |
955 | bool seqnum_id_set = false, |
956 | seqnum_set = false, | |
957 | boot_id_set = false, | |
958 | monotonic_set = false, | |
959 | realtime_set = false, | |
960 | xor_hash_set = false; | |
de190aef | 961 | sd_id128_t seqnum_id, boot_id; |
da277e90 | 962 | int r; |
de190aef | 963 | |
1ae464e0 TA |
964 | assert_return(j, -EINVAL); |
965 | assert_return(!journal_pid_changed(j), -ECHILD); | |
966 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 967 | |
da277e90 ZJS |
968 | for (const char *p = cursor;;) { |
969 | _cleanup_free_ char *word = NULL; | |
de190aef | 970 | |
da277e90 ZJS |
971 | r = extract_first_word(&p, &word, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
972 | if (r < 0) | |
973 | return r; | |
974 | if (r == 0) | |
975 | break; | |
de190aef | 976 | |
da277e90 ZJS |
977 | if (word[0] == '\0' || word[1] != '=') |
978 | return -EINVAL; | |
de190aef | 979 | |
a2a5291b | 980 | switch (word[0]) { |
de190aef LP |
981 | case 's': |
982 | seqnum_id_set = true; | |
da277e90 ZJS |
983 | r = sd_id128_from_string(word + 2, &seqnum_id); |
984 | if (r < 0) | |
985 | return r; | |
de190aef LP |
986 | break; |
987 | ||
988 | case 'i': | |
989 | seqnum_set = true; | |
da277e90 ZJS |
990 | if (sscanf(word + 2, "%llx", &seqnum) != 1) |
991 | return -EINVAL; | |
de190aef LP |
992 | break; |
993 | ||
994 | case 'b': | |
995 | boot_id_set = true; | |
da277e90 | 996 | r = sd_id128_from_string(word + 2, &boot_id); |
de190aef LP |
997 | break; |
998 | ||
999 | case 'm': | |
1000 | monotonic_set = true; | |
da277e90 ZJS |
1001 | if (sscanf(word + 2, "%llx", &monotonic) != 1) |
1002 | return -EINVAL; | |
de190aef LP |
1003 | break; |
1004 | ||
1005 | case 't': | |
1006 | realtime_set = true; | |
da277e90 ZJS |
1007 | if (sscanf(word + 2, "%llx", &realtime) != 1) |
1008 | return -EINVAL; | |
de190aef LP |
1009 | break; |
1010 | ||
1011 | case 'x': | |
1012 | xor_hash_set = true; | |
da277e90 ZJS |
1013 | if (sscanf(word + 2, "%llx", &xor_hash) != 1) |
1014 | return -EINVAL; | |
de190aef LP |
1015 | break; |
1016 | } | |
de190aef LP |
1017 | } |
1018 | ||
1019 | if ((!seqnum_set || !seqnum_id_set) && | |
1020 | (!monotonic_set || !boot_id_set) && | |
1021 | !realtime_set) | |
1022 | return -EINVAL; | |
1023 | ||
bba6e4ae LP |
1024 | detach_location(j); |
1025 | j->current_location = (Location) { | |
1026 | .type = LOCATION_SEEK, | |
1027 | }; | |
de190aef LP |
1028 | |
1029 | if (realtime_set) { | |
1030 | j->current_location.realtime = (uint64_t) realtime; | |
1031 | j->current_location.realtime_set = true; | |
1032 | } | |
1033 | ||
1034 | if (seqnum_set && seqnum_id_set) { | |
1035 | j->current_location.seqnum = (uint64_t) seqnum; | |
1036 | j->current_location.seqnum_id = seqnum_id; | |
1037 | j->current_location.seqnum_set = true; | |
1038 | } | |
1039 | ||
1040 | if (monotonic_set && boot_id_set) { | |
1041 | j->current_location.monotonic = (uint64_t) monotonic; | |
1042 | j->current_location.boot_id = boot_id; | |
1043 | j->current_location.monotonic_set = true; | |
1044 | } | |
1045 | ||
1046 | if (xor_hash_set) { | |
1047 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1048 | j->current_location.xor_hash_set = true; | |
1049 | } | |
1050 | ||
1051 | return 0; | |
1052 | } | |
1053 | ||
c6511e85 LP |
1054 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1055 | int r; | |
c6511e85 LP |
1056 | Object *o; |
1057 | ||
1ae464e0 TA |
1058 | assert_return(j, -EINVAL); |
1059 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1060 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1061 | |
1062 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1063 | return -EADDRNOTAVAIL; | |
1064 | ||
1065 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1066 | if (r < 0) | |
1067 | return r; | |
1068 | ||
9ed794a3 | 1069 | for (;;) { |
c6511e85 | 1070 | _cleanup_free_ char *item = NULL; |
c6511e85 | 1071 | unsigned long long ll; |
7294bb5b | 1072 | sd_id128_t id; |
c6511e85 LP |
1073 | int k = 0; |
1074 | ||
7294bb5b SS |
1075 | r = extract_first_word(&cursor, &item, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
1076 | if (r < 0) | |
1077 | return r; | |
c6511e85 | 1078 | |
7294bb5b SS |
1079 | if (r == 0) |
1080 | break; | |
c6511e85 | 1081 | |
7294bb5b SS |
1082 | if (strlen(item) < 2 || item[1] != '=') |
1083 | return -EINVAL; | |
1084 | ||
1085 | switch (item[0]) { | |
c6511e85 LP |
1086 | |
1087 | case 's': | |
1088 | k = sd_id128_from_string(item+2, &id); | |
1089 | if (k < 0) | |
1090 | return k; | |
1091 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1092 | return 0; | |
1093 | break; | |
1094 | ||
1095 | case 'i': | |
1096 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1097 | return -EINVAL; | |
1098 | if (ll != le64toh(o->entry.seqnum)) | |
1099 | return 0; | |
1100 | break; | |
1101 | ||
1102 | case 'b': | |
1103 | k = sd_id128_from_string(item+2, &id); | |
1104 | if (k < 0) | |
1105 | return k; | |
1106 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1107 | return 0; | |
1108 | break; | |
1109 | ||
1110 | case 'm': | |
1111 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1112 | return -EINVAL; | |
1113 | if (ll != le64toh(o->entry.monotonic)) | |
1114 | return 0; | |
1115 | break; | |
1116 | ||
1117 | case 't': | |
1118 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1119 | return -EINVAL; | |
1120 | if (ll != le64toh(o->entry.realtime)) | |
1121 | return 0; | |
1122 | break; | |
1123 | ||
1124 | case 'x': | |
1125 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1126 | return -EINVAL; | |
1127 | if (ll != le64toh(o->entry.xor_hash)) | |
1128 | return 0; | |
1129 | break; | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | return 1; | |
1134 | } | |
1135 | ||
a5344d2c | 1136 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1137 | assert_return(j, -EINVAL); |
1138 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1139 | |
bba6e4ae LP |
1140 | detach_location(j); |
1141 | ||
1142 | j->current_location = (Location) { | |
1143 | .type = LOCATION_SEEK, | |
1144 | .boot_id = boot_id, | |
1145 | .monotonic = usec, | |
1146 | .monotonic_set = true, | |
1147 | }; | |
de190aef LP |
1148 | |
1149 | return 0; | |
1150 | } | |
1151 | ||
a5344d2c | 1152 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1153 | assert_return(j, -EINVAL); |
1154 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1155 | |
bba6e4ae LP |
1156 | detach_location(j); |
1157 | ||
1158 | j->current_location = (Location) { | |
1159 | .type = LOCATION_SEEK, | |
1160 | .realtime = usec, | |
1161 | .realtime_set = true, | |
1162 | }; | |
de190aef LP |
1163 | |
1164 | return 0; | |
1165 | } | |
1166 | ||
a5344d2c | 1167 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1168 | assert_return(j, -EINVAL); |
1169 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1170 | |
bba6e4ae LP |
1171 | detach_location(j); |
1172 | ||
1173 | j->current_location = (Location) { | |
1174 | .type = LOCATION_HEAD, | |
1175 | }; | |
de190aef LP |
1176 | |
1177 | return 0; | |
1178 | } | |
1179 | ||
a5344d2c | 1180 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1181 | assert_return(j, -EINVAL); |
1182 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1183 | |
bba6e4ae LP |
1184 | detach_location(j); |
1185 | ||
1186 | j->current_location = (Location) { | |
1187 | .type = LOCATION_TAIL, | |
1188 | }; | |
de190aef LP |
1189 | |
1190 | return 0; | |
87d2c1ff LP |
1191 | } |
1192 | ||
85210bff | 1193 | static void check_network(sd_journal *j, int fd) { |
85210bff LP |
1194 | assert(j); |
1195 | ||
1196 | if (j->on_network) | |
1197 | return; | |
1198 | ||
77f9fa3b | 1199 | j->on_network = fd_is_network_fs(fd); |
85210bff LP |
1200 | } |
1201 | ||
a688baa8 ZJS |
1202 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1203 | const char *full, *tilded, *atted; | |
1204 | ||
63c372cb LP |
1205 | full = strjoina(prefix, ".journal"); |
1206 | tilded = strjoina(full, "~"); | |
1207 | atted = strjoina(prefix, "@"); | |
a688baa8 | 1208 | |
0cbd293e | 1209 | return STR_IN_SET(filename, full, tilded) || |
a688baa8 ZJS |
1210 | startswith(filename, atted); |
1211 | } | |
1212 | ||
1213 | static bool file_type_wanted(int flags, const char *filename) { | |
d617408e LP |
1214 | assert(filename); |
1215 | ||
a688baa8 ZJS |
1216 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) |
1217 | return false; | |
1218 | ||
1219 | /* no flags set → every type is OK */ | |
1220 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1221 | return true; | |
1222 | ||
1223 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1224 | return true; | |
1225 | ||
1226 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1227 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1228 | ||
5ffa8c81 | 1229 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1230 | |
1231 | if (file_has_type_prefix(prefix, filename)) | |
1232 | return true; | |
1233 | } | |
1234 | ||
1235 | return false; | |
1236 | } | |
1237 | ||
5d1ce257 LP |
1238 | static bool path_has_prefix(sd_journal *j, const char *path, const char *prefix) { |
1239 | assert(j); | |
1240 | assert(path); | |
1241 | assert(prefix); | |
1242 | ||
1243 | if (j->toplevel_fd >= 0) | |
1244 | return false; | |
1245 | ||
1246 | return path_startswith(path, prefix); | |
1247 | } | |
1248 | ||
9c66f528 LP |
1249 | static void track_file_disposition(sd_journal *j, JournalFile *f) { |
1250 | assert(j); | |
1251 | assert(f); | |
1252 | ||
1253 | if (!j->has_runtime_files && path_has_prefix(j, f->path, "/run")) | |
1254 | j->has_runtime_files = true; | |
1255 | else if (!j->has_persistent_files && path_has_prefix(j, f->path, "/var")) | |
1256 | j->has_persistent_files = true; | |
1257 | } | |
1258 | ||
5d1ce257 LP |
1259 | static const char *skip_slash(const char *p) { |
1260 | ||
1261 | if (!p) | |
1262 | return NULL; | |
1263 | ||
1264 | while (*p == '/') | |
1265 | p++; | |
1266 | ||
1267 | return p; | |
1268 | } | |
1269 | ||
9c66f528 LP |
1270 | static int add_any_file( |
1271 | sd_journal *j, | |
1272 | int fd, | |
1273 | const char *path) { | |
1274 | ||
5d1ce257 | 1275 | bool close_fd = false; |
9c66f528 LP |
1276 | JournalFile *f; |
1277 | struct stat st; | |
d617408e | 1278 | int r, k; |
3fbf9cbb LP |
1279 | |
1280 | assert(j); | |
5d1ce257 | 1281 | assert(fd >= 0 || path); |
3fbf9cbb | 1282 | |
9c66f528 LP |
1283 | if (fd < 0) { |
1284 | if (j->toplevel_fd >= 0) | |
1285 | /* If there's a top-level fd defined make the path relative, explicitly, since otherwise | |
1286 | * openat() ignores the first argument. */ | |
1287 | ||
1288 | fd = openat(j->toplevel_fd, skip_slash(path), O_RDONLY|O_CLOEXEC|O_NONBLOCK); | |
1289 | else | |
1290 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK); | |
1291 | if (fd < 0) { | |
1292 | r = log_debug_errno(errno, "Failed to open journal file %s: %m", path); | |
1293 | goto finish; | |
1294 | } | |
1295 | ||
1296 | close_fd = true; | |
1297 | ||
1298 | r = fd_nonblock(fd, false); | |
1299 | if (r < 0) { | |
1300 | r = log_debug_errno(errno, "Failed to turn off O_NONBLOCK for %s: %m", path); | |
1301 | goto finish; | |
858749f7 LP |
1302 | } |
1303 | } | |
50f20cfd | 1304 | |
9c66f528 LP |
1305 | if (fstat(fd, &st) < 0) { |
1306 | r = log_debug_errno(errno, "Failed to fstat file '%s': %m", path); | |
1307 | goto finish; | |
1308 | } | |
3cc44114 LP |
1309 | |
1310 | r = stat_verify_regular(&st); | |
1311 | if (r < 0) { | |
1312 | log_debug_errno(r, "Refusing to open '%s', as it is not a regular file.", path); | |
9c66f528 | 1313 | goto finish; |
9e8abdf0 LP |
1314 | } |
1315 | ||
9c66f528 LP |
1316 | f = ordered_hashmap_get(j->files, path); |
1317 | if (f) { | |
1318 | if (f->last_stat.st_dev == st.st_dev && | |
1319 | f->last_stat.st_ino == st.st_ino) { | |
5d1ce257 | 1320 | |
9c66f528 LP |
1321 | /* We already track this file, under the same path and with the same device/inode numbers, it's |
1322 | * hence really the same. Mark this file as seen in this generation. This is used to GC old | |
1323 | * files in process_q_overflow() to detect journal files that are still there and discern them | |
1324 | * from those which are gone. */ | |
5d1ce257 | 1325 | |
9c66f528 LP |
1326 | f->last_seen_generation = j->generation; |
1327 | r = 0; | |
1328 | goto finish; | |
5d1ce257 LP |
1329 | } |
1330 | ||
9c66f528 LP |
1331 | /* So we tracked a file under this name, but it has a different inode/device. In that case, it got |
1332 | * replaced (probably due to rotation?), let's drop it hence from our list. */ | |
1333 | remove_file_real(j, f); | |
1334 | f = NULL; | |
1335 | } | |
1336 | ||
1337 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { | |
1338 | log_debug("Too many open journal files, not adding %s.", path); | |
1339 | r = -ETOOMANYREFS; | |
1340 | goto finish; | |
5d1ce257 LP |
1341 | } |
1342 | ||
57850536 | 1343 | r = journal_file_open(fd, path, O_RDONLY, 0, false, 0, false, NULL, j->mmap, NULL, NULL, &f); |
d617408e LP |
1344 | if (r < 0) { |
1345 | log_debug_errno(r, "Failed to open journal file %s: %m", path); | |
9c66f528 | 1346 | goto finish; |
d617408e | 1347 | } |
3fbf9cbb | 1348 | |
72f59706 | 1349 | /* journal_file_dump(f); */ |
de190aef | 1350 | |
c1f906bd | 1351 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb | 1352 | if (r < 0) { |
9c66f528 | 1353 | f->close_fd = false; /* make sure journal_file_close() doesn't close the caller's fd (or our own). We'll let the caller do that, or ourselves */ |
69a3a6fd | 1354 | (void) journal_file_close(f); |
9c66f528 | 1355 | goto finish; |
3fbf9cbb LP |
1356 | } |
1357 | ||
9c66f528 | 1358 | close_fd = false; /* the fd is now owned by the JournalFile object */ |
5d1ce257 | 1359 | |
9c66f528 | 1360 | f->last_seen_generation = j->generation; |
a50d7d43 | 1361 | |
9c66f528 | 1362 | track_file_disposition(j, f); |
85210bff LP |
1363 | check_network(j, f->fd); |
1364 | ||
313cefa1 | 1365 | j->current_invalidate_counter++; |
a963990f | 1366 | |
9c66f528 | 1367 | log_debug("File %s added.", f->path); |
d617408e | 1368 | |
9c66f528 LP |
1369 | r = 0; |
1370 | ||
1371 | finish: | |
1372 | if (close_fd) | |
1373 | safe_close(fd); | |
1374 | ||
1375 | if (r < 0) { | |
1376 | k = journal_put_error(j, r, path); | |
1377 | if (k < 0) | |
1378 | return k; | |
1379 | } | |
d617408e LP |
1380 | |
1381 | return r; | |
50f20cfd LP |
1382 | } |
1383 | ||
fc1813c0 LP |
1384 | static int add_file_by_name( |
1385 | sd_journal *j, | |
1386 | const char *prefix, | |
1387 | const char *filename) { | |
1388 | ||
d617408e | 1389 | const char *path; |
5302ebe1 ZJS |
1390 | |
1391 | assert(j); | |
1392 | assert(prefix); | |
1393 | assert(filename); | |
1394 | ||
5d1ce257 | 1395 | if (j->no_new_files) |
5302ebe1 ZJS |
1396 | return 0; |
1397 | ||
5d1ce257 LP |
1398 | if (!file_type_wanted(j->flags, filename)) |
1399 | return 0; | |
39fd5b08 | 1400 | |
270384b2 | 1401 | path = prefix_roota(prefix, filename); |
5d1ce257 | 1402 | return add_any_file(j, -1, path); |
5302ebe1 ZJS |
1403 | } |
1404 | ||
fc1813c0 LP |
1405 | static void remove_file_by_name( |
1406 | sd_journal *j, | |
1407 | const char *prefix, | |
1408 | const char *filename) { | |
1409 | ||
d617408e | 1410 | const char *path; |
50f20cfd LP |
1411 | JournalFile *f; |
1412 | ||
1413 | assert(j); | |
1414 | assert(prefix); | |
1415 | assert(filename); | |
1416 | ||
270384b2 | 1417 | path = prefix_roota(prefix, filename); |
c1f906bd | 1418 | f = ordered_hashmap_get(j->files, path); |
50f20cfd | 1419 | if (!f) |
d617408e | 1420 | return; |
50f20cfd | 1421 | |
a9a245c1 | 1422 | remove_file_real(j, f); |
a9a245c1 ZJS |
1423 | } |
1424 | ||
1425 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1426 | assert(j); | |
1427 | assert(f); | |
1428 | ||
fc1813c0 | 1429 | (void) ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1430 | |
5ec76417 | 1431 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1432 | |
3c1668da LP |
1433 | if (j->current_file == f) { |
1434 | j->current_file = NULL; | |
1435 | j->current_field = 0; | |
1436 | } | |
1437 | ||
1438 | if (j->unique_file == f) { | |
360af4cf | 1439 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1440 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1441 | j->unique_offset = 0; |
360af4cf ZJS |
1442 | if (!j->unique_file) |
1443 | j->unique_file_lost = true; | |
3c1668da LP |
1444 | } |
1445 | ||
eb86030e LP |
1446 | if (j->fields_file == f) { |
1447 | j->fields_file = ordered_hashmap_next(j->files, j->fields_file->path); | |
1448 | j->fields_offset = 0; | |
1449 | if (!j->fields_file) | |
1450 | j->fields_file_lost = true; | |
1451 | } | |
1452 | ||
69a3a6fd | 1453 | (void) journal_file_close(f); |
50f20cfd | 1454 | |
313cefa1 | 1455 | j->current_invalidate_counter++; |
3fbf9cbb LP |
1456 | } |
1457 | ||
d617408e LP |
1458 | static int dirname_is_machine_id(const char *fn) { |
1459 | sd_id128_t id, machine; | |
456aa879 | 1460 | const char *e; |
d617408e LP |
1461 | int r; |
1462 | ||
456aa879 LP |
1463 | /* Returns true if the specified directory name matches the local machine ID */ |
1464 | ||
d617408e LP |
1465 | r = sd_id128_get_machine(&machine); |
1466 | if (r < 0) | |
1467 | return r; | |
1468 | ||
456aa879 LP |
1469 | e = strchr(fn, '.'); |
1470 | if (e) { | |
1471 | const char *k; | |
1472 | ||
1473 | /* Looks like it has a namespace suffix. Verify that. */ | |
1474 | if (!log_namespace_name_valid(e + 1)) | |
1475 | return false; | |
1476 | ||
1477 | k = strndupa(fn, e - fn); | |
1478 | r = sd_id128_from_string(k, &id); | |
1479 | } else | |
1480 | r = sd_id128_from_string(fn, &id); | |
d617408e LP |
1481 | if (r < 0) |
1482 | return r; | |
1483 | ||
1484 | return sd_id128_equal(id, machine); | |
1485 | } | |
1486 | ||
456aa879 LP |
1487 | static int dirname_has_namespace(const char *fn, const char *namespace) { |
1488 | const char *e; | |
1489 | ||
1490 | /* Returns true if the specified directory name matches the specified namespace */ | |
1491 | ||
1492 | e = strchr(fn, '.'); | |
1493 | if (e) { | |
1494 | const char *k; | |
1495 | ||
1496 | if (!namespace) | |
1497 | return false; | |
1498 | ||
1499 | if (!streq(e + 1, namespace)) | |
1500 | return false; | |
1501 | ||
1502 | k = strndupa(fn, e - fn); | |
1503 | return id128_is_valid(k); | |
1504 | } | |
1505 | ||
1506 | if (namespace) | |
1507 | return false; | |
1508 | ||
1509 | return id128_is_valid(fn); | |
1510 | } | |
1511 | ||
858749f7 LP |
1512 | static bool dirent_is_journal_file(const struct dirent *de) { |
1513 | assert(de); | |
1514 | ||
456aa879 LP |
1515 | /* Returns true if the specified directory entry looks like a journal file we might be interested in */ |
1516 | ||
858749f7 LP |
1517 | if (!IN_SET(de->d_type, DT_REG, DT_LNK, DT_UNKNOWN)) |
1518 | return false; | |
1519 | ||
1520 | return endswith(de->d_name, ".journal") || | |
1521 | endswith(de->d_name, ".journal~"); | |
1522 | } | |
1523 | ||
456aa879 LP |
1524 | static bool dirent_is_journal_subdir(const struct dirent *de) { |
1525 | const char *e, *n; | |
858749f7 LP |
1526 | assert(de); |
1527 | ||
456aa879 LP |
1528 | /* returns true if the specified directory entry looks like a directory that might contain journal |
1529 | * files we might be interested in, i.e. is either a 128bit ID or a 128bit ID suffixed by a | |
1530 | * namespace. */ | |
1531 | ||
858749f7 LP |
1532 | if (!IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN)) |
1533 | return false; | |
1534 | ||
456aa879 LP |
1535 | e = strchr(de->d_name, '.'); |
1536 | if (!e) | |
1537 | return id128_is_valid(de->d_name); /* No namespace */ | |
1538 | ||
1539 | n = strndupa(de->d_name, e - de->d_name); | |
1540 | if (!id128_is_valid(n)) | |
1541 | return false; | |
1542 | ||
1543 | return log_namespace_name_valid(e + 1); | |
858749f7 LP |
1544 | } |
1545 | ||
1546 | static int directory_open(sd_journal *j, const char *path, DIR **ret) { | |
1547 | DIR *d; | |
1548 | ||
1549 | assert(j); | |
1550 | assert(path); | |
1551 | assert(ret); | |
1552 | ||
1553 | if (j->toplevel_fd < 0) | |
1554 | d = opendir(path); | |
1555 | else | |
1556 | /* Open the specified directory relative to the toplevel fd. Enforce that the path specified is | |
1557 | * relative, by dropping the initial slash */ | |
1558 | d = xopendirat(j->toplevel_fd, skip_slash(path), 0); | |
1559 | if (!d) | |
1560 | return -errno; | |
1561 | ||
1562 | *ret = d; | |
1563 | return 0; | |
1564 | } | |
1565 | ||
1566 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname); | |
1567 | ||
1568 | static void directory_enumerate(sd_journal *j, Directory *m, DIR *d) { | |
1569 | struct dirent *de; | |
1570 | ||
1571 | assert(j); | |
1572 | assert(m); | |
1573 | assert(d); | |
1574 | ||
1575 | FOREACH_DIRENT_ALL(de, d, goto fail) { | |
fc1813c0 | 1576 | |
858749f7 | 1577 | if (dirent_is_journal_file(de)) |
fc1813c0 | 1578 | (void) add_file_by_name(j, m->path, de->d_name); |
858749f7 | 1579 | |
456aa879 | 1580 | if (m->is_root && dirent_is_journal_subdir(de)) |
858749f7 LP |
1581 | (void) add_directory(j, m->path, de->d_name); |
1582 | } | |
1583 | ||
1584 | return; | |
1585 | ||
1586 | fail: | |
1587 | log_debug_errno(errno, "Failed to enumerate directory %s, ignoring: %m", m->path); | |
1588 | } | |
1589 | ||
1590 | static void directory_watch(sd_journal *j, Directory *m, int fd, uint32_t mask) { | |
1591 | int r; | |
1592 | ||
1593 | assert(j); | |
1594 | assert(m); | |
1595 | assert(fd >= 0); | |
1596 | ||
1597 | /* Watch this directory if that's enabled and if it not being watched yet. */ | |
1598 | ||
1599 | if (m->wd > 0) /* Already have a watch? */ | |
1600 | return; | |
1601 | if (j->inotify_fd < 0) /* Not watching at all? */ | |
1602 | return; | |
1603 | ||
1604 | m->wd = inotify_add_watch_fd(j->inotify_fd, fd, mask); | |
1605 | if (m->wd < 0) { | |
1606 | log_debug_errno(errno, "Failed to watch journal directory '%s', ignoring: %m", m->path); | |
1607 | return; | |
1608 | } | |
1609 | ||
1610 | r = hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m); | |
1611 | if (r == -EEXIST) | |
1612 | log_debug_errno(r, "Directory '%s' already being watched under a different path, ignoring: %m", m->path); | |
1613 | if (r < 0) { | |
1614 | log_debug_errno(r, "Failed to add watch for journal directory '%s' to hashmap, ignoring: %m", m->path); | |
1615 | (void) inotify_rm_watch(j->inotify_fd, m->wd); | |
1616 | m->wd = -1; | |
1617 | } | |
1618 | } | |
1619 | ||
456aa879 LP |
1620 | static int add_directory( |
1621 | sd_journal *j, | |
1622 | const char *prefix, | |
1623 | const char *dirname) { | |
1624 | ||
7fd1b19b | 1625 | _cleanup_free_ char *path = NULL; |
7fd1b19b | 1626 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1627 | Directory *m; |
d617408e | 1628 | int r, k; |
3fbf9cbb LP |
1629 | |
1630 | assert(j); | |
1631 | assert(prefix); | |
3fbf9cbb | 1632 | |
5d1ce257 LP |
1633 | /* Adds a journal file directory to watch. If the directory is already tracked this updates the inotify watch |
1634 | * and reenumerates directory contents */ | |
d95b1fb3 | 1635 | |
657ee2d8 | 1636 | path = path_join(prefix, dirname); |
d617408e LP |
1637 | if (!path) { |
1638 | r = -ENOMEM; | |
1639 | goto fail; | |
1640 | } | |
3fbf9cbb | 1641 | |
858749f7 | 1642 | log_debug("Considering directory '%s'.", path); |
5d1ce257 LP |
1643 | |
1644 | /* We consider everything local that is in a directory for the local machine ID, or that is stored in /run */ | |
1645 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && | |
1646 | !((dirname && dirname_is_machine_id(dirname) > 0) || path_has_prefix(j, path, "/run"))) | |
858749f7 | 1647 | return 0; |
5d1ce257 | 1648 | |
2b6df46d LP |
1649 | if (dirname && |
1650 | (!(FLAGS_SET(j->flags, SD_JOURNAL_ALL_NAMESPACES) || | |
1651 | dirname_has_namespace(dirname, j->namespace) > 0 || | |
1652 | (FLAGS_SET(j->flags, SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE) && dirname_has_namespace(dirname, NULL) > 0)))) | |
456aa879 LP |
1653 | return 0; |
1654 | ||
858749f7 LP |
1655 | r = directory_open(j, path, &d); |
1656 | if (r < 0) { | |
1657 | log_debug_errno(r, "Failed to open directory '%s': %m", path); | |
d617408e | 1658 | goto fail; |
3fbf9cbb LP |
1659 | } |
1660 | ||
a963990f LP |
1661 | m = hashmap_get(j->directories_by_path, path); |
1662 | if (!m) { | |
2f5435a1 | 1663 | m = new(Directory, 1); |
d617408e LP |
1664 | if (!m) { |
1665 | r = -ENOMEM; | |
1666 | goto fail; | |
1667 | } | |
a963990f | 1668 | |
2f5435a1 LP |
1669 | *m = (Directory) { |
1670 | .is_root = false, | |
1671 | .path = path, | |
1672 | }; | |
a963990f LP |
1673 | |
1674 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f | 1675 | free(m); |
d617408e LP |
1676 | r = -ENOMEM; |
1677 | goto fail; | |
a963990f LP |
1678 | } |
1679 | ||
a50d7d43 | 1680 | path = NULL; /* avoid freeing in cleanup */ |
313cefa1 | 1681 | j->current_invalidate_counter++; |
a963990f | 1682 | |
5ec76417 | 1683 | log_debug("Directory %s added.", m->path); |
a963990f | 1684 | |
a50d7d43 | 1685 | } else if (m->is_root) |
858749f7 | 1686 | return 0; /* Don't 'downgrade' from root directory */ |
a963990f | 1687 | |
858749f7 | 1688 | m->last_seen_generation = j->generation; |
a963990f | 1689 | |
858749f7 LP |
1690 | directory_watch(j, m, dirfd(d), |
1691 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1692 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| | |
1693 | IN_ONLYDIR); | |
a963990f | 1694 | |
858749f7 LP |
1695 | if (!j->no_new_files) |
1696 | directory_enumerate(j, m, d); | |
a963990f | 1697 | |
85210bff LP |
1698 | check_network(j, dirfd(d)); |
1699 | ||
a963990f | 1700 | return 0; |
d617408e LP |
1701 | |
1702 | fail: | |
5d1ce257 | 1703 | k = journal_put_error(j, r, path ?: prefix); |
d617408e LP |
1704 | if (k < 0) |
1705 | return k; | |
1706 | ||
1707 | return r; | |
a963990f LP |
1708 | } |
1709 | ||
d617408e | 1710 | static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) { |
5d1ce257 | 1711 | |
7fd1b19b | 1712 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1713 | Directory *m; |
d617408e | 1714 | int r, k; |
a963990f LP |
1715 | |
1716 | assert(j); | |
a963990f | 1717 | |
5d1ce257 LP |
1718 | /* Adds a root directory to our set of directories to use. If the root directory is already in the set, we |
1719 | * update the inotify logic, and renumerate the directory entries. This call may hence be called to initially | |
1720 | * populate the set, as well as to update it later. */ | |
a963990f | 1721 | |
5d1ce257 LP |
1722 | if (p) { |
1723 | /* If there's a path specified, use it. */ | |
b6741478 | 1724 | |
858749f7 LP |
1725 | log_debug("Considering root directory '%s'.", p); |
1726 | ||
5d1ce257 LP |
1727 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && |
1728 | !path_has_prefix(j, p, "/run")) | |
1729 | return -EINVAL; | |
d617408e | 1730 | |
5d1ce257 LP |
1731 | if (j->prefix) |
1732 | p = strjoina(j->prefix, p); | |
1733 | ||
858749f7 LP |
1734 | r = directory_open(j, p, &d); |
1735 | if (r == -ENOENT && missing_ok) | |
1736 | return 0; | |
1737 | if (r < 0) { | |
1738 | log_debug_errno(r, "Failed to open root directory %s: %m", p); | |
5d1ce257 LP |
1739 | goto fail; |
1740 | } | |
1741 | } else { | |
8e06af80 | 1742 | _cleanup_close_ int dfd = -1; |
5d1ce257 LP |
1743 | |
1744 | /* If there's no path specified, then we use the top-level fd itself. We duplicate the fd here, since | |
1745 | * opendir() will take possession of the fd, and close it, which we don't want. */ | |
1746 | ||
1747 | p = "."; /* store this as "." in the directories hashmap */ | |
1748 | ||
1749 | dfd = fcntl(j->toplevel_fd, F_DUPFD_CLOEXEC, 3); | |
1750 | if (dfd < 0) { | |
1751 | r = -errno; | |
1752 | goto fail; | |
1753 | } | |
1754 | ||
8e06af80 | 1755 | d = take_fdopendir(&dfd); |
5d1ce257 LP |
1756 | if (!d) { |
1757 | r = -errno; | |
5d1ce257 LP |
1758 | goto fail; |
1759 | } | |
1760 | ||
1761 | rewinddir(d); | |
d617408e | 1762 | } |
a963990f LP |
1763 | |
1764 | m = hashmap_get(j->directories_by_path, p); | |
1765 | if (!m) { | |
1766 | m = new0(Directory, 1); | |
d617408e LP |
1767 | if (!m) { |
1768 | r = -ENOMEM; | |
1769 | goto fail; | |
1770 | } | |
a963990f LP |
1771 | |
1772 | m->is_root = true; | |
5d1ce257 | 1773 | |
a963990f LP |
1774 | m->path = strdup(p); |
1775 | if (!m->path) { | |
a963990f | 1776 | free(m); |
d617408e LP |
1777 | r = -ENOMEM; |
1778 | goto fail; | |
a963990f LP |
1779 | } |
1780 | ||
1781 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1782 | free(m->path); |
1783 | free(m); | |
d617408e LP |
1784 | r = -ENOMEM; |
1785 | goto fail; | |
a963990f LP |
1786 | } |
1787 | ||
313cefa1 | 1788 | j->current_invalidate_counter++; |
a963990f | 1789 | |
5ec76417 | 1790 | log_debug("Root directory %s added.", m->path); |
a963990f | 1791 | |
a50d7d43 | 1792 | } else if (!m->is_root) |
a963990f | 1793 | return 0; |
50f20cfd | 1794 | |
858749f7 LP |
1795 | directory_watch(j, m, dirfd(d), |
1796 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1797 | IN_ONLYDIR); | |
a963990f | 1798 | |
858749f7 LP |
1799 | if (!j->no_new_files) |
1800 | directory_enumerate(j, m, d); | |
3fbf9cbb | 1801 | |
85210bff LP |
1802 | check_network(j, dirfd(d)); |
1803 | ||
a963990f | 1804 | return 0; |
d617408e LP |
1805 | |
1806 | fail: | |
5768d259 | 1807 | k = journal_put_error(j, r, p); |
d617408e LP |
1808 | if (k < 0) |
1809 | return k; | |
1810 | ||
1811 | return r; | |
a963990f LP |
1812 | } |
1813 | ||
b2b46f91 | 1814 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1815 | assert(j); |
1816 | ||
1817 | if (d->wd > 0) { | |
1818 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1819 | ||
1820 | if (j->inotify_fd >= 0) | |
98d4a4df | 1821 | (void) inotify_rm_watch(j->inotify_fd, d->wd); |
a963990f LP |
1822 | } |
1823 | ||
1824 | hashmap_remove(j->directories_by_path, d->path); | |
1825 | ||
1826 | if (d->is_root) | |
5ec76417 | 1827 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1828 | else |
5ec76417 | 1829 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1830 | |
1831 | free(d->path); | |
1832 | free(d); | |
3fbf9cbb LP |
1833 | } |
1834 | ||
89739579 | 1835 | static int add_search_paths(sd_journal *j) { |
d617408e LP |
1836 | |
1837 | static const char search_paths[] = | |
a963990f LP |
1838 | "/run/log/journal\0" |
1839 | "/var/log/journal\0"; | |
1840 | const char *p; | |
50f20cfd LP |
1841 | |
1842 | assert(j); | |
50f20cfd | 1843 | |
a963990f LP |
1844 | /* We ignore most errors here, since the idea is to only open |
1845 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1846 | |
d617408e LP |
1847 | NULSTR_FOREACH(p, search_paths) |
1848 | (void) add_root_directory(j, p, true); | |
50f20cfd | 1849 | |
574b77ef MB |
1850 | if (!(j->flags & SD_JOURNAL_LOCAL_ONLY)) |
1851 | (void) add_root_directory(j, "/var/log/journal/remote", true); | |
1852 | ||
a963990f | 1853 | return 0; |
50f20cfd LP |
1854 | } |
1855 | ||
5302ebe1 | 1856 | static int add_current_paths(sd_journal *j) { |
5302ebe1 ZJS |
1857 | JournalFile *f; |
1858 | ||
1859 | assert(j); | |
1860 | assert(j->no_new_files); | |
1861 | ||
5d1ce257 | 1862 | /* Simply adds all directories for files we have open as directories. We don't expect errors here, so we |
5302ebe1 ZJS |
1863 | * treat them as fatal. */ |
1864 | ||
90e74a66 | 1865 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
5302ebe1 | 1866 | _cleanup_free_ char *dir; |
e9174f29 | 1867 | int r; |
5302ebe1 ZJS |
1868 | |
1869 | dir = dirname_malloc(f->path); | |
1870 | if (!dir) | |
1871 | return -ENOMEM; | |
1872 | ||
5d1ce257 | 1873 | r = add_directory(j, dir, NULL); |
d617408e | 1874 | if (r < 0) |
5302ebe1 | 1875 | return r; |
5302ebe1 ZJS |
1876 | } |
1877 | ||
1878 | return 0; | |
1879 | } | |
1880 | ||
a963990f | 1881 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1882 | assert(j); |
50f20cfd | 1883 | |
a963990f LP |
1884 | if (j->inotify_fd < 0) { |
1885 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1886 | if (j->inotify_fd < 0) | |
1887 | return -errno; | |
1888 | } | |
50f20cfd | 1889 | |
cb306f5d | 1890 | return hashmap_ensure_allocated(&j->directories_by_wd, NULL); |
50f20cfd LP |
1891 | } |
1892 | ||
456aa879 | 1893 | static sd_journal *journal_new(int flags, const char *path, const char *namespace) { |
17c9aff8 | 1894 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
50f20cfd | 1895 | |
a963990f LP |
1896 | j = new0(sd_journal, 1); |
1897 | if (!j) | |
1898 | return NULL; | |
50f20cfd | 1899 | |
df0ff127 | 1900 | j->original_pid = getpid_cached(); |
5d1ce257 | 1901 | j->toplevel_fd = -1; |
a963990f LP |
1902 | j->inotify_fd = -1; |
1903 | j->flags = flags; | |
93b73b06 | 1904 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1905 | |
7827b1a1 | 1906 | if (path) { |
16fefe90 ZJS |
1907 | char *t; |
1908 | ||
1909 | t = strdup(path); | |
1910 | if (!t) | |
17c9aff8 | 1911 | return NULL; |
16fefe90 ZJS |
1912 | |
1913 | if (flags & SD_JOURNAL_OS_ROOT) | |
1914 | j->prefix = t; | |
1915 | else | |
1916 | j->path = t; | |
7827b1a1 LP |
1917 | } |
1918 | ||
456aa879 LP |
1919 | if (namespace) { |
1920 | j->namespace = strdup(namespace); | |
1921 | if (!j->namespace) | |
1922 | return NULL; | |
1923 | } | |
1924 | ||
548f6937 | 1925 | j->files = ordered_hashmap_new(&path_hash_ops); |
5d4ba7f2 | 1926 | if (!j->files) |
17c9aff8 | 1927 | return NULL; |
5d4ba7f2 VC |
1928 | |
1929 | j->files_cache = ordered_hashmap_iterated_cache_new(j->files); | |
548f6937 | 1930 | j->directories_by_path = hashmap_new(&path_hash_ops); |
84168d80 | 1931 | j->mmap = mmap_cache_new(); |
5d4ba7f2 | 1932 | if (!j->files_cache || !j->directories_by_path || !j->mmap) |
17c9aff8 | 1933 | return NULL; |
6180fc61 | 1934 | |
17c9aff8 | 1935 | return TAKE_PTR(j); |
50f20cfd LP |
1936 | } |
1937 | ||
1aaa68f5 ZJS |
1938 | #define OPEN_ALLOWED_FLAGS \ |
1939 | (SD_JOURNAL_LOCAL_ONLY | \ | |
1940 | SD_JOURNAL_RUNTIME_ONLY | \ | |
456aa879 LP |
1941 | SD_JOURNAL_SYSTEM | \ |
1942 | SD_JOURNAL_CURRENT_USER | \ | |
1943 | SD_JOURNAL_ALL_NAMESPACES | \ | |
1944 | SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE) | |
1aaa68f5 | 1945 | |
456aa879 | 1946 | _public_ int sd_journal_open_namespace(sd_journal **ret, const char *namespace, int flags) { |
17c9aff8 | 1947 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
3fbf9cbb | 1948 | int r; |
87d2c1ff | 1949 | |
1ae464e0 | 1950 | assert_return(ret, -EINVAL); |
1aaa68f5 | 1951 | assert_return((flags & ~OPEN_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 1952 | |
456aa879 | 1953 | j = journal_new(flags, NULL, namespace); |
87d2c1ff LP |
1954 | if (!j) |
1955 | return -ENOMEM; | |
1956 | ||
89739579 | 1957 | r = add_search_paths(j); |
a963990f | 1958 | if (r < 0) |
17c9aff8 | 1959 | return r; |
50f20cfd | 1960 | |
17c9aff8 | 1961 | *ret = TAKE_PTR(j); |
a963990f | 1962 | return 0; |
a963990f | 1963 | } |
50f20cfd | 1964 | |
456aa879 LP |
1965 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
1966 | return sd_journal_open_namespace(ret, NULL, flags); | |
1967 | } | |
1968 | ||
1aaa68f5 ZJS |
1969 | #define OPEN_CONTAINER_ALLOWED_FLAGS \ |
1970 | (SD_JOURNAL_LOCAL_ONLY | SD_JOURNAL_SYSTEM) | |
1971 | ||
b6741478 LP |
1972 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1973 | _cleanup_free_ char *root = NULL, *class = NULL; | |
17c9aff8 | 1974 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
b6741478 LP |
1975 | char *p; |
1976 | int r; | |
1977 | ||
68312977 | 1978 | /* This is deprecated, people should use machined's OpenMachineRootDirectory() call instead in |
2daa9cbd LP |
1979 | * combination with sd_journal_open_directory_fd(). */ |
1980 | ||
b6741478 LP |
1981 | assert_return(machine, -EINVAL); |
1982 | assert_return(ret, -EINVAL); | |
1aaa68f5 | 1983 | assert_return((flags & ~OPEN_CONTAINER_ALLOWED_FLAGS) == 0, -EINVAL); |
affcf189 | 1984 | assert_return(machine_name_is_valid(machine), -EINVAL); |
b6741478 | 1985 | |
63c372cb | 1986 | p = strjoina("/run/systemd/machines/", machine); |
13df9c39 LP |
1987 | r = parse_env_file(NULL, p, |
1988 | "ROOT", &root, | |
1989 | "CLASS", &class); | |
b6741478 LP |
1990 | if (r == -ENOENT) |
1991 | return -EHOSTDOWN; | |
1992 | if (r < 0) | |
1993 | return r; | |
1994 | if (!root) | |
1995 | return -ENODATA; | |
1996 | ||
1997 | if (!streq_ptr(class, "container")) | |
1998 | return -EIO; | |
1999 | ||
456aa879 | 2000 | j = journal_new(flags, root, NULL); |
b6741478 LP |
2001 | if (!j) |
2002 | return -ENOMEM; | |
2003 | ||
89739579 | 2004 | r = add_search_paths(j); |
b6741478 | 2005 | if (r < 0) |
17c9aff8 | 2006 | return r; |
b6741478 | 2007 | |
17c9aff8 | 2008 | *ret = TAKE_PTR(j); |
b6741478 | 2009 | return 0; |
b6741478 LP |
2010 | } |
2011 | ||
1aaa68f5 | 2012 | #define OPEN_DIRECTORY_ALLOWED_FLAGS \ |
10752e82 ZJS |
2013 | (SD_JOURNAL_OS_ROOT | \ |
2014 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 2015 | |
a963990f | 2016 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
17c9aff8 | 2017 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
a963990f | 2018 | int r; |
87d2c1ff | 2019 | |
1ae464e0 TA |
2020 | assert_return(ret, -EINVAL); |
2021 | assert_return(path, -EINVAL); | |
1aaa68f5 | 2022 | assert_return((flags & ~OPEN_DIRECTORY_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 2023 | |
456aa879 | 2024 | j = journal_new(flags, path, NULL); |
a963990f LP |
2025 | if (!j) |
2026 | return -ENOMEM; | |
3fbf9cbb | 2027 | |
d077390c LP |
2028 | if (flags & SD_JOURNAL_OS_ROOT) |
2029 | r = add_search_paths(j); | |
2030 | else | |
2031 | r = add_root_directory(j, path, false); | |
d617408e | 2032 | if (r < 0) |
17c9aff8 | 2033 | return r; |
87d2c1ff | 2034 | |
17c9aff8 | 2035 | *ret = TAKE_PTR(j); |
87d2c1ff | 2036 | return 0; |
a963990f | 2037 | } |
87d2c1ff | 2038 | |
5302ebe1 | 2039 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
17c9aff8 | 2040 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5302ebe1 ZJS |
2041 | const char **path; |
2042 | int r; | |
2043 | ||
1ae464e0 TA |
2044 | assert_return(ret, -EINVAL); |
2045 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 | 2046 | |
456aa879 | 2047 | j = journal_new(flags, NULL, NULL); |
5302ebe1 ZJS |
2048 | if (!j) |
2049 | return -ENOMEM; | |
2050 | ||
2051 | STRV_FOREACH(path, paths) { | |
5d1ce257 | 2052 | r = add_any_file(j, -1, *path); |
d617408e | 2053 | if (r < 0) |
17c9aff8 | 2054 | return r; |
5302ebe1 ZJS |
2055 | } |
2056 | ||
2057 | j->no_new_files = true; | |
2058 | ||
17c9aff8 | 2059 | *ret = TAKE_PTR(j); |
5302ebe1 | 2060 | return 0; |
5d1ce257 LP |
2061 | } |
2062 | ||
1aaa68f5 | 2063 | #define OPEN_DIRECTORY_FD_ALLOWED_FLAGS \ |
10752e82 ZJS |
2064 | (SD_JOURNAL_OS_ROOT | \ |
2065 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 2066 | |
5d1ce257 | 2067 | _public_ int sd_journal_open_directory_fd(sd_journal **ret, int fd, int flags) { |
17c9aff8 | 2068 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5d1ce257 LP |
2069 | struct stat st; |
2070 | int r; | |
2071 | ||
2072 | assert_return(ret, -EINVAL); | |
2073 | assert_return(fd >= 0, -EBADF); | |
1aaa68f5 | 2074 | assert_return((flags & ~OPEN_DIRECTORY_FD_ALLOWED_FLAGS) == 0, -EINVAL); |
5d1ce257 LP |
2075 | |
2076 | if (fstat(fd, &st) < 0) | |
2077 | return -errno; | |
2078 | ||
2079 | if (!S_ISDIR(st.st_mode)) | |
2080 | return -EBADFD; | |
2081 | ||
456aa879 | 2082 | j = journal_new(flags, NULL, NULL); |
5d1ce257 LP |
2083 | if (!j) |
2084 | return -ENOMEM; | |
2085 | ||
2086 | j->toplevel_fd = fd; | |
2087 | ||
d077390c LP |
2088 | if (flags & SD_JOURNAL_OS_ROOT) |
2089 | r = add_search_paths(j); | |
2090 | else | |
2091 | r = add_root_directory(j, NULL, false); | |
5d1ce257 | 2092 | if (r < 0) |
17c9aff8 | 2093 | return r; |
5d1ce257 | 2094 | |
17c9aff8 | 2095 | *ret = TAKE_PTR(j); |
5d1ce257 | 2096 | return 0; |
5d1ce257 LP |
2097 | } |
2098 | ||
2099 | _public_ int sd_journal_open_files_fd(sd_journal **ret, int fds[], unsigned n_fds, int flags) { | |
5d1ce257 | 2100 | JournalFile *f; |
17c9aff8 | 2101 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5d1ce257 LP |
2102 | unsigned i; |
2103 | int r; | |
2104 | ||
2105 | assert_return(ret, -EINVAL); | |
2106 | assert_return(n_fds > 0, -EBADF); | |
2107 | assert_return(flags == 0, -EINVAL); | |
2108 | ||
456aa879 | 2109 | j = journal_new(flags, NULL, NULL); |
5d1ce257 LP |
2110 | if (!j) |
2111 | return -ENOMEM; | |
2112 | ||
2113 | for (i = 0; i < n_fds; i++) { | |
2114 | struct stat st; | |
2115 | ||
2116 | if (fds[i] < 0) { | |
2117 | r = -EBADF; | |
2118 | goto fail; | |
2119 | } | |
2120 | ||
2121 | if (fstat(fds[i], &st) < 0) { | |
2122 | r = -errno; | |
2123 | goto fail; | |
2124 | } | |
2125 | ||
3cc44114 LP |
2126 | r = stat_verify_regular(&st); |
2127 | if (r < 0) | |
5d1ce257 | 2128 | goto fail; |
5d1ce257 LP |
2129 | |
2130 | r = add_any_file(j, fds[i], NULL); | |
2131 | if (r < 0) | |
2132 | goto fail; | |
2133 | } | |
2134 | ||
2135 | j->no_new_files = true; | |
2136 | j->no_inotify = true; | |
5302ebe1 | 2137 | |
17c9aff8 | 2138 | *ret = TAKE_PTR(j); |
5d1ce257 LP |
2139 | return 0; |
2140 | ||
2141 | fail: | |
f8e2f4d6 | 2142 | /* If we fail, make sure we don't take possession of the files we managed to make use of successfully, and they |
5d1ce257 | 2143 | * remain open */ |
90e74a66 | 2144 | ORDERED_HASHMAP_FOREACH(f, j->files) |
5d1ce257 LP |
2145 | f->close_fd = false; |
2146 | ||
5302ebe1 ZJS |
2147 | return r; |
2148 | } | |
2149 | ||
a5344d2c | 2150 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f | 2151 | Directory *d; |
a963990f | 2152 | |
a5344d2c LP |
2153 | if (!j) |
2154 | return; | |
87d2c1ff | 2155 | |
54b1da83 LP |
2156 | sd_journal_flush_matches(j); |
2157 | ||
f9168190 | 2158 | ordered_hashmap_free_with_destructor(j->files, journal_file_close); |
5d4ba7f2 | 2159 | iterated_cache_free(j->files_cache); |
260a2be4 | 2160 | |
a963990f LP |
2161 | while ((d = hashmap_first(j->directories_by_path))) |
2162 | remove_directory(j, d); | |
260a2be4 | 2163 | |
a963990f LP |
2164 | while ((d = hashmap_first(j->directories_by_wd))) |
2165 | remove_directory(j, d); | |
87d2c1ff | 2166 | |
a963990f LP |
2167 | hashmap_free(j->directories_by_path); |
2168 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 2169 | |
03e334a1 | 2170 | safe_close(j->inotify_fd); |
50f20cfd | 2171 | |
bf807d4d | 2172 | if (j->mmap) { |
3a595c59 | 2173 | mmap_cache_stats_log_debug(j->mmap); |
16e9f408 | 2174 | mmap_cache_unref(j->mmap); |
bf807d4d | 2175 | } |
16e9f408 | 2176 | |
ec1d2909 | 2177 | hashmap_free_free(j->errors); |
5768d259 | 2178 | |
7827b1a1 | 2179 | free(j->path); |
89739579 | 2180 | free(j->prefix); |
456aa879 | 2181 | free(j->namespace); |
3c1668da | 2182 | free(j->unique_field); |
eb86030e | 2183 | free(j->fields_buffer); |
87d2c1ff LP |
2184 | free(j); |
2185 | } | |
3fbf9cbb | 2186 | |
a5344d2c | 2187 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
2188 | Object *o; |
2189 | JournalFile *f; | |
2190 | int r; | |
2191 | ||
1ae464e0 TA |
2192 | assert_return(j, -EINVAL); |
2193 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2194 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
2195 | |
2196 | f = j->current_file; | |
2197 | if (!f) | |
de190aef | 2198 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2199 | |
2200 | if (f->current_offset <= 0) | |
de190aef | 2201 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2202 | |
de190aef | 2203 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2204 | if (r < 0) |
2205 | return r; | |
2206 | ||
2207 | *ret = le64toh(o->entry.realtime); | |
de190aef | 2208 | return 0; |
3fbf9cbb LP |
2209 | } |
2210 | ||
a5344d2c | 2211 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
2212 | Object *o; |
2213 | JournalFile *f; | |
2214 | int r; | |
3fbf9cbb | 2215 | |
1ae464e0 TA |
2216 | assert_return(j, -EINVAL); |
2217 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
2218 | |
2219 | f = j->current_file; | |
2220 | if (!f) | |
de190aef | 2221 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2222 | |
2223 | if (f->current_offset <= 0) | |
de190aef | 2224 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2225 | |
de190aef | 2226 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2227 | if (r < 0) |
2228 | return r; | |
2229 | ||
de190aef LP |
2230 | if (ret_boot_id) |
2231 | *ret_boot_id = o->entry.boot_id; | |
2232 | else { | |
d4739bc4 VC |
2233 | sd_id128_t id; |
2234 | ||
de190aef LP |
2235 | r = sd_id128_get_boot(&id); |
2236 | if (r < 0) | |
2237 | return r; | |
3fbf9cbb | 2238 | |
de190aef | 2239 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 2240 | return -ESTALE; |
de190aef | 2241 | } |
3fbf9cbb | 2242 | |
14a65d65 LP |
2243 | if (ret) |
2244 | *ret = le64toh(o->entry.monotonic); | |
2245 | ||
de190aef | 2246 | return 0; |
3fbf9cbb LP |
2247 | } |
2248 | ||
362a3f81 LP |
2249 | static bool field_is_valid(const char *field) { |
2250 | const char *p; | |
2251 | ||
2252 | assert(field); | |
2253 | ||
2254 | if (isempty(field)) | |
2255 | return false; | |
2256 | ||
2257 | if (startswith(field, "__")) | |
2258 | return false; | |
2259 | ||
2260 | for (p = field; *p; p++) { | |
2261 | ||
2262 | if (*p == '_') | |
2263 | continue; | |
2264 | ||
2265 | if (*p >= 'A' && *p <= 'Z') | |
2266 | continue; | |
2267 | ||
2268 | if (*p >= '0' && *p <= '9') | |
2269 | continue; | |
2270 | ||
2271 | return false; | |
2272 | } | |
2273 | ||
2274 | return true; | |
2275 | } | |
2276 | ||
a5344d2c | 2277 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
2278 | JournalFile *f; |
2279 | uint64_t i, n; | |
2280 | size_t field_length; | |
2281 | int r; | |
2282 | Object *o; | |
2283 | ||
1ae464e0 TA |
2284 | assert_return(j, -EINVAL); |
2285 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2286 | assert_return(field, -EINVAL); | |
2287 | assert_return(data, -EINVAL); | |
2288 | assert_return(size, -EINVAL); | |
2289 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
2290 | |
2291 | f = j->current_file; | |
2292 | if (!f) | |
de190aef | 2293 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2294 | |
2295 | if (f->current_offset <= 0) | |
de190aef | 2296 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2297 | |
de190aef | 2298 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2299 | if (r < 0) |
2300 | return r; | |
2301 | ||
2302 | field_length = strlen(field); | |
2303 | ||
2304 | n = journal_file_entry_n_items(o); | |
2305 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2306 | uint64_t p, l; |
2307 | le64_t le_hash; | |
3fbf9cbb | 2308 | size_t t; |
1ec7120e | 2309 | int compression; |
3fbf9cbb LP |
2310 | |
2311 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 2312 | le_hash = o->entry.items[i].hash; |
de190aef | 2313 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
2314 | if (r < 0) |
2315 | return r; | |
2316 | ||
de190aef | 2317 | if (le_hash != o->data.hash) |
de7b95cd LP |
2318 | return -EBADMSG; |
2319 | ||
3fbf9cbb LP |
2320 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
2321 | ||
1ec7120e | 2322 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 | 2323 | if (compression) { |
d80b051c | 2324 | #if HAVE_COMPRESSION |
2aaec9b4 | 2325 | r = decompress_startswith(compression, |
3b1a55e1 ZJS |
2326 | o->data.payload, l, |
2327 | &f->compress_buffer, &f->compress_buffer_size, | |
2aaec9b4 ZJS |
2328 | field, field_length, '='); |
2329 | if (r < 0) | |
82e24b00 | 2330 | log_debug_errno(r, "Cannot decompress %s object of length %"PRIu64" at offset "OFSfmt": %m", |
2aaec9b4 ZJS |
2331 | object_compressed_to_string(compression), l, p); |
2332 | else if (r > 0) { | |
3b1a55e1 | 2333 | |
fa1c4b51 | 2334 | size_t rsize; |
3b1a55e1 ZJS |
2335 | |
2336 | r = decompress_blob(compression, | |
2337 | o->data.payload, l, | |
2338 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
2339 | j->data_threshold); | |
2340 | if (r < 0) | |
2341 | return r; | |
807e17f0 | 2342 | |
3b1a55e1 ZJS |
2343 | *data = f->compress_buffer; |
2344 | *size = (size_t) rsize; | |
807e17f0 | 2345 | |
3b1a55e1 ZJS |
2346 | return 0; |
2347 | } | |
2348 | #else | |
2349 | return -EPROTONOSUPPORT; | |
2350 | #endif | |
807e17f0 LP |
2351 | } else if (l >= field_length+1 && |
2352 | memcmp(o->data.payload, field, field_length) == 0 && | |
2353 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 2354 | |
161e54f8 | 2355 | t = (size_t) l; |
3fbf9cbb | 2356 | |
161e54f8 LP |
2357 | if ((uint64_t) t != l) |
2358 | return -E2BIG; | |
3fbf9cbb | 2359 | |
161e54f8 LP |
2360 | *data = o->data.payload; |
2361 | *size = t; | |
3fbf9cbb | 2362 | |
99613ec5 | 2363 | return 0; |
161e54f8 | 2364 | } |
3fbf9cbb | 2365 | |
de190aef | 2366 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
2367 | if (r < 0) |
2368 | return r; | |
3fbf9cbb LP |
2369 | } |
2370 | ||
de190aef | 2371 | return -ENOENT; |
3fbf9cbb LP |
2372 | } |
2373 | ||
93b73b06 | 2374 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2375 | size_t t; |
2376 | uint64_t l; | |
3b1a55e1 | 2377 | int compression; |
3c1668da | 2378 | |
893e0f8f LP |
2379 | l = le64toh(READ_NOW(o->object.size)); |
2380 | if (l < offsetof(Object, data.payload)) | |
2381 | return -EBADMSG; | |
2382 | l -= offsetof(Object, data.payload); | |
3c1668da LP |
2383 | t = (size_t) l; |
2384 | ||
2385 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2386 | if ((uint64_t) t != l) | |
2387 | return -E2BIG; | |
2388 | ||
1ec7120e ZJS |
2389 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
2390 | if (compression) { | |
d80b051c | 2391 | #if HAVE_COMPRESSION |
fa1c4b51 | 2392 | size_t rsize; |
3b1a55e1 | 2393 | int r; |
3c1668da | 2394 | |
1ec7120e ZJS |
2395 | r = decompress_blob(compression, |
2396 | o->data.payload, l, &f->compress_buffer, | |
2397 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
2398 | if (r < 0) | |
2399 | return r; | |
3c1668da LP |
2400 | |
2401 | *data = f->compress_buffer; | |
2402 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
2403 | #else |
2404 | return -EPROTONOSUPPORT; | |
2405 | #endif | |
3c1668da LP |
2406 | } else { |
2407 | *data = o->data.payload; | |
2408 | *size = t; | |
2409 | } | |
2410 | ||
2411 | return 0; | |
2412 | } | |
2413 | ||
a5344d2c | 2414 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2415 | JournalFile *f; |
3c1668da | 2416 | uint64_t p, n; |
4fd052ae | 2417 | le64_t le_hash; |
3fbf9cbb LP |
2418 | int r; |
2419 | Object *o; | |
2420 | ||
1ae464e0 TA |
2421 | assert_return(j, -EINVAL); |
2422 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2423 | assert_return(data, -EINVAL); | |
2424 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2425 | |
2426 | f = j->current_file; | |
2427 | if (!f) | |
de190aef | 2428 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2429 | |
2430 | if (f->current_offset <= 0) | |
de190aef | 2431 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2432 | |
de190aef | 2433 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2434 | if (r < 0) |
2435 | return r; | |
2436 | ||
2437 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2438 | if (j->current_field >= n) |
3fbf9cbb LP |
2439 | return 0; |
2440 | ||
7210bfb3 | 2441 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2442 | le_hash = o->entry.items[j->current_field].hash; |
2443 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2444 | if (r < 0) |
2445 | return r; | |
2446 | ||
de190aef | 2447 | if (le_hash != o->data.hash) |
de7b95cd LP |
2448 | return -EBADMSG; |
2449 | ||
93b73b06 | 2450 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2451 | if (r < 0) |
2452 | return r; | |
3fbf9cbb | 2453 | |
313cefa1 | 2454 | j->current_field++; |
3fbf9cbb LP |
2455 | |
2456 | return 1; | |
2457 | } | |
c2373f84 | 2458 | |
76cbafcd ZJS |
2459 | _public_ int sd_journal_enumerate_available_data(sd_journal *j, const void **data, size_t *size) { |
2460 | for (;;) { | |
2461 | int r; | |
2462 | ||
2463 | r = sd_journal_enumerate_data(j, data, size); | |
2464 | if (r >= 0) | |
2465 | return r; | |
2466 | if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r)) | |
2467 | return r; | |
2468 | j->current_field++; /* Try with the next field */ | |
2469 | } | |
2470 | } | |
2471 | ||
a5344d2c LP |
2472 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2473 | if (!j) | |
2474 | return; | |
8725d60a LP |
2475 | |
2476 | j->current_field = 0; | |
c2373f84 | 2477 | } |
50f20cfd | 2478 | |
858749f7 LP |
2479 | static int reiterate_all_paths(sd_journal *j) { |
2480 | assert(j); | |
2481 | ||
2482 | if (j->no_new_files) | |
2483 | return add_current_paths(j); | |
2484 | ||
2485 | if (j->flags & SD_JOURNAL_OS_ROOT) | |
2486 | return add_search_paths(j); | |
2487 | ||
2488 | if (j->toplevel_fd >= 0) | |
2489 | return add_root_directory(j, NULL, false); | |
2490 | ||
2491 | if (j->path) | |
2492 | return add_root_directory(j, j->path, true); | |
2493 | ||
2494 | return add_search_paths(j); | |
2495 | } | |
2496 | ||
a5344d2c | 2497 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2498 | int r; |
2499 | ||
1ae464e0 TA |
2500 | assert_return(j, -EINVAL); |
2501 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2502 | |
5d1ce257 LP |
2503 | if (j->no_inotify) |
2504 | return -EMEDIUMTYPE; | |
2505 | ||
a963990f LP |
2506 | if (j->inotify_fd >= 0) |
2507 | return j->inotify_fd; | |
2508 | ||
2509 | r = allocate_inotify(j); | |
2510 | if (r < 0) | |
2511 | return r; | |
2512 | ||
858749f7 | 2513 | log_debug("Reiterating files to get inotify watches established."); |
5d1ce257 | 2514 | |
858749f7 LP |
2515 | /* Iterate through all dirs again, to add them to the inotify */ |
2516 | r = reiterate_all_paths(j); | |
a963990f LP |
2517 | if (r < 0) |
2518 | return r; | |
2519 | ||
50f20cfd LP |
2520 | return j->inotify_fd; |
2521 | } | |
2522 | ||
ee531d94 LP |
2523 | _public_ int sd_journal_get_events(sd_journal *j) { |
2524 | int fd; | |
2525 | ||
1ae464e0 TA |
2526 | assert_return(j, -EINVAL); |
2527 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2528 | |
2529 | fd = sd_journal_get_fd(j); | |
2530 | if (fd < 0) | |
2531 | return fd; | |
2532 | ||
2533 | return POLLIN; | |
2534 | } | |
2535 | ||
39c155ea LP |
2536 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2537 | int fd; | |
2538 | ||
1ae464e0 TA |
2539 | assert_return(j, -EINVAL); |
2540 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2541 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2542 | |
2543 | fd = sd_journal_get_fd(j); | |
2544 | if (fd < 0) | |
2545 | return fd; | |
2546 | ||
2547 | if (!j->on_network) { | |
2548 | *timeout_usec = (uint64_t) -1; | |
2549 | return 0; | |
2550 | } | |
2551 | ||
2552 | /* If we are on the network we need to regularly check for | |
2553 | * changes manually */ | |
2554 | ||
2555 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2556 | return 1; | |
2557 | } | |
2558 | ||
858749f7 LP |
2559 | static void process_q_overflow(sd_journal *j) { |
2560 | JournalFile *f; | |
2561 | Directory *m; | |
858749f7 LP |
2562 | |
2563 | assert(j); | |
2564 | ||
2565 | /* When the inotify queue overruns we need to enumerate and re-validate all journal files to bring our list | |
2566 | * back in sync with what's on disk. For this we pick a new generation counter value. It'll be assigned to all | |
2567 | * journal files we encounter. All journal files and all directories that don't carry it after reenumeration | |
2568 | * are subject for unloading. */ | |
2569 | ||
2570 | log_debug("Inotify queue overrun, reiterating everything."); | |
2571 | ||
2572 | j->generation++; | |
2573 | (void) reiterate_all_paths(j); | |
2574 | ||
90e74a66 | 2575 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
858749f7 LP |
2576 | |
2577 | if (f->last_seen_generation == j->generation) | |
2578 | continue; | |
2579 | ||
2580 | log_debug("File '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2581 | remove_file_real(j, f); | |
2582 | } | |
2583 | ||
90e74a66 | 2584 | HASHMAP_FOREACH(m, j->directories_by_path) { |
858749f7 LP |
2585 | |
2586 | if (m->last_seen_generation == j->generation) | |
2587 | continue; | |
2588 | ||
2589 | if (m->is_root) /* Never GC root directories */ | |
2590 | continue; | |
2591 | ||
2592 | log_debug("Directory '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2593 | remove_directory(j, m); | |
2594 | } | |
2595 | ||
2596 | log_debug("Reiteration complete."); | |
2597 | } | |
2598 | ||
31e99dd2 | 2599 | static void process_inotify_event(sd_journal *j, const struct inotify_event *e) { |
a963990f | 2600 | Directory *d; |
50f20cfd LP |
2601 | |
2602 | assert(j); | |
2603 | assert(e); | |
2604 | ||
858749f7 LP |
2605 | if (e->mask & IN_Q_OVERFLOW) { |
2606 | process_q_overflow(j); | |
2607 | return; | |
2608 | } | |
2609 | ||
50f20cfd | 2610 | /* Is this a subdirectory we watch? */ |
a963990f LP |
2611 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2612 | if (d) { | |
de2c3907 LP |
2613 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2614 | (endswith(e->name, ".journal") || | |
2615 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2616 | |
2617 | /* Event for a journal file */ | |
2618 | ||
d617408e | 2619 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
fc1813c0 | 2620 | (void) add_file_by_name(j, d->path, e->name); |
d617408e | 2621 | else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) |
fc1813c0 | 2622 | remove_file_by_name(j, d->path, e->name); |
50f20cfd | 2623 | |
a963990f | 2624 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2625 | |
a963990f | 2626 | /* Event for a subdirectory */ |
50f20cfd | 2627 | |
b2b46f91 TA |
2628 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2629 | remove_directory(j, d); | |
50f20cfd | 2630 | |
a9be0692 | 2631 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && id128_is_valid(e->name)) { |
50f20cfd | 2632 | |
a963990f | 2633 | /* Event for root directory */ |
50f20cfd | 2634 | |
d617408e LP |
2635 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2636 | (void) add_directory(j, d->path, e->name); | |
50f20cfd LP |
2637 | } |
2638 | ||
2639 | return; | |
2640 | } | |
2641 | ||
2642 | if (e->mask & IN_IGNORED) | |
2643 | return; | |
2644 | ||
a9be0692 | 2645 | log_debug("Unexpected inotify event."); |
50f20cfd LP |
2646 | } |
2647 | ||
a963990f LP |
2648 | static int determine_change(sd_journal *j) { |
2649 | bool b; | |
2650 | ||
2651 | assert(j); | |
2652 | ||
2653 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2654 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2655 | ||
2656 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2657 | } | |
2658 | ||
a5344d2c | 2659 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2660 | bool got_something = false; |
50f20cfd | 2661 | |
1ae464e0 TA |
2662 | assert_return(j, -EINVAL); |
2663 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2664 | |
10c4d640 LP |
2665 | if (j->inotify_fd < 0) /* We have no inotify fd yet? Then there's noting to process. */ |
2666 | return 0; | |
2667 | ||
39c155ea | 2668 | j->last_process_usec = now(CLOCK_MONOTONIC); |
f9346444 | 2669 | j->last_invalidate_counter = j->current_invalidate_counter; |
39c155ea | 2670 | |
50f20cfd | 2671 | for (;;) { |
0254e944 | 2672 | union inotify_event_buffer buffer; |
50f20cfd LP |
2673 | struct inotify_event *e; |
2674 | ssize_t l; | |
2675 | ||
0254e944 | 2676 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2677 | if (l < 0) { |
3742095b | 2678 | if (IN_SET(errno, EAGAIN, EINTR)) |
a963990f | 2679 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; |
50f20cfd LP |
2680 | |
2681 | return -errno; | |
2682 | } | |
2683 | ||
a963990f LP |
2684 | got_something = true; |
2685 | ||
f7c1ad4f | 2686 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2687 | process_inotify_event(j, e); |
50f20cfd LP |
2688 | } |
2689 | } | |
6ad1d1c3 | 2690 | |
e02d1cf7 | 2691 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2692 | int r; |
39c155ea | 2693 | uint64_t t; |
e02d1cf7 | 2694 | |
1ae464e0 TA |
2695 | assert_return(j, -EINVAL); |
2696 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2697 | |
a963990f | 2698 | if (j->inotify_fd < 0) { |
28ca867a | 2699 | JournalFile *f; |
a963990f LP |
2700 | |
2701 | /* This is the first invocation, hence create the | |
2702 | * inotify watch */ | |
2703 | r = sd_journal_get_fd(j); | |
2704 | if (r < 0) | |
2705 | return r; | |
2706 | ||
28ca867a MS |
2707 | /* Server might have done some vacuuming while we weren't watching. |
2708 | Get rid of the deleted files now so they don't stay around indefinitely. */ | |
90e74a66 | 2709 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
28ca867a | 2710 | r = journal_file_fstat(f); |
8581b9f9 MS |
2711 | if (r == -EIDRM) |
2712 | remove_file_real(j, f); | |
2713 | else if (r < 0) { | |
28ca867a MS |
2714 | log_debug_errno(r,"Failed to fstat() journal file '%s' : %m", f->path); |
2715 | continue; | |
2716 | } | |
28ca867a MS |
2717 | } |
2718 | ||
a963990f LP |
2719 | /* The journal might have changed since the context |
2720 | * object was created and we weren't watching before, | |
2721 | * hence don't wait for anything, and return | |
2722 | * immediately. */ | |
2723 | return determine_change(j); | |
2724 | } | |
2725 | ||
39c155ea LP |
2726 | r = sd_journal_get_timeout(j, &t); |
2727 | if (r < 0) | |
2728 | return r; | |
2729 | ||
2730 | if (t != (uint64_t) -1) { | |
2731 | usec_t n; | |
2732 | ||
2733 | n = now(CLOCK_MONOTONIC); | |
2734 | t = t > n ? t - n : 0; | |
85210bff | 2735 | |
39c155ea LP |
2736 | if (timeout_usec == (uint64_t) -1 || timeout_usec > t) |
2737 | timeout_usec = t; | |
85210bff LP |
2738 | } |
2739 | ||
a963990f LP |
2740 | do { |
2741 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2742 | } while (r == -EINTR); | |
e02d1cf7 LP |
2743 | |
2744 | if (r < 0) | |
2745 | return r; | |
2746 | ||
a963990f | 2747 | return sd_journal_process(j); |
e02d1cf7 LP |
2748 | } |
2749 | ||
08984293 | 2750 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
08984293 LP |
2751 | JournalFile *f; |
2752 | bool first = true; | |
581483bf | 2753 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2754 | int r; |
2755 | ||
1ae464e0 TA |
2756 | assert_return(j, -EINVAL); |
2757 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2758 | assert_return(from || to, -EINVAL); | |
2759 | assert_return(from != to, -EINVAL); | |
08984293 | 2760 | |
90e74a66 | 2761 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
08984293 LP |
2762 | usec_t fr, t; |
2763 | ||
2764 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2765 | if (r == -ENOENT) |
2766 | continue; | |
08984293 LP |
2767 | if (r < 0) |
2768 | return r; | |
2769 | if (r == 0) | |
2770 | continue; | |
2771 | ||
2772 | if (first) { | |
581483bf LP |
2773 | fmin = fr; |
2774 | tmax = t; | |
08984293 LP |
2775 | first = false; |
2776 | } else { | |
581483bf LP |
2777 | fmin = MIN(fr, fmin); |
2778 | tmax = MAX(t, tmax); | |
08984293 LP |
2779 | } |
2780 | } | |
2781 | ||
581483bf LP |
2782 | if (from) |
2783 | *from = fmin; | |
2784 | if (to) | |
2785 | *to = tmax; | |
2786 | ||
08984293 LP |
2787 | return first ? 0 : 1; |
2788 | } | |
2789 | ||
2790 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
08984293 | 2791 | JournalFile *f; |
1651e2c6 | 2792 | bool found = false; |
08984293 LP |
2793 | int r; |
2794 | ||
1ae464e0 TA |
2795 | assert_return(j, -EINVAL); |
2796 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2797 | assert_return(from || to, -EINVAL); | |
2798 | assert_return(from != to, -EINVAL); | |
08984293 | 2799 | |
90e74a66 | 2800 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
08984293 LP |
2801 | usec_t fr, t; |
2802 | ||
2803 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2804 | if (r == -ENOENT) |
2805 | continue; | |
08984293 LP |
2806 | if (r < 0) |
2807 | return r; | |
2808 | if (r == 0) | |
2809 | continue; | |
2810 | ||
1651e2c6 | 2811 | if (found) { |
08984293 | 2812 | if (from) |
1651e2c6 | 2813 | *from = MIN(fr, *from); |
08984293 | 2814 | if (to) |
1651e2c6 | 2815 | *to = MAX(t, *to); |
08984293 LP |
2816 | } else { |
2817 | if (from) | |
1651e2c6 | 2818 | *from = fr; |
08984293 | 2819 | if (to) |
1651e2c6 ZJS |
2820 | *to = t; |
2821 | found = true; | |
08984293 LP |
2822 | } |
2823 | } | |
2824 | ||
1651e2c6 | 2825 | return found; |
08984293 LP |
2826 | } |
2827 | ||
dca6219e | 2828 | void journal_print_header(sd_journal *j) { |
dca6219e LP |
2829 | JournalFile *f; |
2830 | bool newline = false; | |
2831 | ||
2832 | assert(j); | |
2833 | ||
90e74a66 | 2834 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
dca6219e LP |
2835 | if (newline) |
2836 | putchar('\n'); | |
2837 | else | |
2838 | newline = true; | |
2839 | ||
2840 | journal_file_print_header(f); | |
2841 | } | |
2842 | } | |
08984293 | 2843 | |
a1a03e30 | 2844 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
a1a03e30 LP |
2845 | JournalFile *f; |
2846 | uint64_t sum = 0; | |
2847 | ||
1ae464e0 TA |
2848 | assert_return(j, -EINVAL); |
2849 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2850 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2851 | |
90e74a66 | 2852 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
a1a03e30 LP |
2853 | struct stat st; |
2854 | ||
2855 | if (fstat(f->fd, &st) < 0) | |
2856 | return -errno; | |
2857 | ||
2858 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2859 | } | |
2860 | ||
2861 | *bytes = sum; | |
2862 | return 0; | |
2863 | } | |
2864 | ||
3c1668da LP |
2865 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2866 | char *f; | |
2867 | ||
1ae464e0 TA |
2868 | assert_return(j, -EINVAL); |
2869 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2870 | assert_return(!isempty(field), -EINVAL); | |
2871 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2872 | |
2873 | f = strdup(field); | |
2874 | if (!f) | |
2875 | return -ENOMEM; | |
2876 | ||
2877 | free(j->unique_field); | |
2878 | j->unique_field = f; | |
2879 | j->unique_file = NULL; | |
2880 | j->unique_offset = 0; | |
360af4cf | 2881 | j->unique_file_lost = false; |
3c1668da LP |
2882 | |
2883 | return 0; | |
2884 | } | |
2885 | ||
2886 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2887 | size_t k; |
19a2bd80 | 2888 | |
1ae464e0 TA |
2889 | assert_return(j, -EINVAL); |
2890 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2891 | assert_return(data, -EINVAL); | |
2892 | assert_return(l, -EINVAL); | |
2893 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2894 | |
3c1668da | 2895 | k = strlen(j->unique_field); |
19a2bd80 | 2896 | |
3c1668da | 2897 | if (!j->unique_file) { |
360af4cf ZJS |
2898 | if (j->unique_file_lost) |
2899 | return 0; | |
2900 | ||
c1f906bd | 2901 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2902 | if (!j->unique_file) |
2903 | return 0; | |
360af4cf | 2904 | |
3c1668da LP |
2905 | j->unique_offset = 0; |
2906 | } | |
19a2bd80 | 2907 | |
3c1668da LP |
2908 | for (;;) { |
2909 | JournalFile *of; | |
ae97089d | 2910 | Object *o; |
3c1668da LP |
2911 | const void *odata; |
2912 | size_t ol; | |
2913 | bool found; | |
ae97089d | 2914 | int r; |
3c1668da | 2915 | |
bdc02927 | 2916 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2917 | if (j->unique_offset == 0) { |
2918 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2919 | if (r < 0) | |
2920 | return r; | |
2921 | ||
2922 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2923 | } else { | |
2924 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2925 | if (r < 0) | |
2926 | return r; | |
2927 | ||
2928 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2929 | } | |
2930 | ||
2931 | /* We reached the end of the list? Then start again, with the next file */ | |
2932 | if (j->unique_offset == 0) { | |
c1f906bd | 2933 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2934 | if (!j->unique_file) |
3c1668da LP |
2935 | return 0; |
2936 | ||
3c1668da LP |
2937 | continue; |
2938 | } | |
2939 | ||
d05089d8 MS |
2940 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2941 | * instead, so that we can look at this data object at the same | |
3c1668da | 2942 | * time as one on another file */ |
d05089d8 | 2943 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2944 | if (r < 0) |
2945 | return r; | |
2946 | ||
2947 | /* Let's do the type check by hand, since we used 0 context above. */ | |
baaa35ad ZJS |
2948 | if (o->object.type != OBJECT_DATA) |
2949 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
2950 | "%s:offset " OFSfmt ": object has type %d, expected %d", | |
2951 | j->unique_file->path, | |
2952 | j->unique_offset, | |
2953 | o->object.type, OBJECT_DATA); | |
ae97089d | 2954 | |
93b73b06 | 2955 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2956 | if (r < 0) |
2957 | return r; | |
2958 | ||
0f99f74a | 2959 | /* Check if we have at least the field name and "=". */ |
baaa35ad ZJS |
2960 | if (ol <= k) |
2961 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
2962 | "%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2963 | j->unique_file->path, | |
2964 | j->unique_offset, ol, k + 1); | |
2965 | ||
2966 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') | |
2967 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
2968 | "%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2969 | j->unique_file->path, | |
2970 | j->unique_offset, | |
2971 | j->unique_field); | |
0f99f74a | 2972 | |
3c1668da LP |
2973 | /* OK, now let's see if we already returned this data |
2974 | * object by checking if it exists in the earlier | |
2975 | * traversed files. */ | |
2976 | found = false; | |
90e74a66 | 2977 | ORDERED_HASHMAP_FOREACH(of, j->files) { |
3c1668da LP |
2978 | if (of == j->unique_file) |
2979 | break; | |
2980 | ||
ed71f956 LP |
2981 | /* Skip this file it didn't have any fields indexed */ |
2982 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3c1668da LP |
2983 | continue; |
2984 | ||
ed71f956 | 2985 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), NULL, NULL); |
3c1668da LP |
2986 | if (r < 0) |
2987 | return r; | |
ed71f956 | 2988 | if (r > 0) { |
3c1668da | 2989 | found = true; |
ed71f956 LP |
2990 | break; |
2991 | } | |
3c1668da LP |
2992 | } |
2993 | ||
06cc69d4 JJ |
2994 | if (found) |
2995 | continue; | |
2996 | ||
93b73b06 | 2997 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2998 | if (r < 0) |
2999 | return r; | |
3000 | ||
3001 | return 1; | |
3002 | } | |
3003 | } | |
3004 | ||
76cbafcd ZJS |
3005 | _public_ int sd_journal_enumerate_available_unique(sd_journal *j, const void **data, size_t *size) { |
3006 | for (;;) { | |
3007 | int r; | |
3008 | ||
3009 | r = sd_journal_enumerate_unique(j, data, size); | |
3010 | if (r >= 0) | |
3011 | return r; | |
3012 | if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r)) | |
3013 | return r; | |
3014 | /* Try with the next field. sd_journal_enumerate_unique() modifies state, so on the next try | |
3015 | * we will access the next field. */ | |
3016 | } | |
3017 | } | |
3018 | ||
115646c7 | 3019 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
3020 | if (!j) |
3021 | return; | |
3022 | ||
3023 | j->unique_file = NULL; | |
3024 | j->unique_offset = 0; | |
360af4cf | 3025 | j->unique_file_lost = false; |
3c1668da | 3026 | } |
85210bff | 3027 | |
eb86030e LP |
3028 | _public_ int sd_journal_enumerate_fields(sd_journal *j, const char **field) { |
3029 | int r; | |
3030 | ||
3031 | assert_return(j, -EINVAL); | |
3032 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3033 | assert_return(field, -EINVAL); | |
3034 | ||
3035 | if (!j->fields_file) { | |
3036 | if (j->fields_file_lost) | |
3037 | return 0; | |
3038 | ||
3039 | j->fields_file = ordered_hashmap_first(j->files); | |
3040 | if (!j->fields_file) | |
3041 | return 0; | |
3042 | ||
3043 | j->fields_hash_table_index = 0; | |
3044 | j->fields_offset = 0; | |
3045 | } | |
3046 | ||
3047 | for (;;) { | |
3048 | JournalFile *f, *of; | |
eb86030e LP |
3049 | uint64_t m; |
3050 | Object *o; | |
3051 | size_t sz; | |
3052 | bool found; | |
3053 | ||
3054 | f = j->fields_file; | |
3055 | ||
3056 | if (j->fields_offset == 0) { | |
3057 | bool eof = false; | |
3058 | ||
3059 | /* We are not yet positioned at any field. Let's pick the first one */ | |
3060 | r = journal_file_map_field_hash_table(f); | |
3061 | if (r < 0) | |
3062 | return r; | |
3063 | ||
3064 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); | |
3065 | for (;;) { | |
3066 | if (j->fields_hash_table_index >= m) { | |
3067 | /* Reached the end of the hash table, go to the next file. */ | |
3068 | eof = true; | |
3069 | break; | |
3070 | } | |
3071 | ||
3072 | j->fields_offset = le64toh(f->field_hash_table[j->fields_hash_table_index].head_hash_offset); | |
3073 | ||
3074 | if (j->fields_offset != 0) | |
3075 | break; | |
3076 | ||
3077 | /* Empty hash table bucket, go to next one */ | |
3078 | j->fields_hash_table_index++; | |
3079 | } | |
3080 | ||
3081 | if (eof) { | |
3082 | /* Proceed with next file */ | |
3083 | j->fields_file = ordered_hashmap_next(j->files, f->path); | |
3084 | if (!j->fields_file) { | |
3085 | *field = NULL; | |
3086 | return 0; | |
3087 | } | |
3088 | ||
3089 | j->fields_offset = 0; | |
3090 | j->fields_hash_table_index = 0; | |
3091 | continue; | |
3092 | } | |
3093 | ||
3094 | } else { | |
3095 | /* We are already positioned at a field. If so, let's figure out the next field from it */ | |
3096 | ||
3097 | r = journal_file_move_to_object(f, OBJECT_FIELD, j->fields_offset, &o); | |
3098 | if (r < 0) | |
3099 | return r; | |
3100 | ||
3101 | j->fields_offset = le64toh(o->field.next_hash_offset); | |
3102 | if (j->fields_offset == 0) { | |
3103 | /* Reached the end of the hash table chain */ | |
3104 | j->fields_hash_table_index++; | |
3105 | continue; | |
3106 | } | |
3107 | } | |
3108 | ||
1f133e0d | 3109 | /* We use OBJECT_UNUSED here, so that the iterator below doesn't remove our mmap window */ |
eb86030e LP |
3110 | r = journal_file_move_to_object(f, OBJECT_UNUSED, j->fields_offset, &o); |
3111 | if (r < 0) | |
3112 | return r; | |
3113 | ||
3114 | /* Because we used OBJECT_UNUSED above, we need to do our type check manually */ | |
baaa35ad ZJS |
3115 | if (o->object.type != OBJECT_FIELD) |
3116 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
3117 | "%s:offset " OFSfmt ": object has type %i, expected %i", | |
3118 | f->path, j->fields_offset, | |
3119 | o->object.type, OBJECT_FIELD); | |
eb86030e LP |
3120 | |
3121 | sz = le64toh(o->object.size) - offsetof(Object, field.payload); | |
3122 | ||
3123 | /* Let's see if we already returned this field name before. */ | |
3124 | found = false; | |
90e74a66 | 3125 | ORDERED_HASHMAP_FOREACH(of, j->files) { |
eb86030e LP |
3126 | if (of == f) |
3127 | break; | |
3128 | ||
3129 | /* Skip this file it didn't have any fields indexed */ | |
3130 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3131 | continue; | |
3132 | ||
3133 | r = journal_file_find_field_object_with_hash(of, o->field.payload, sz, le64toh(o->field.hash), NULL, NULL); | |
3134 | if (r < 0) | |
3135 | return r; | |
3136 | if (r > 0) { | |
3137 | found = true; | |
3138 | break; | |
3139 | } | |
3140 | } | |
3141 | ||
3142 | if (found) | |
3143 | continue; | |
3144 | ||
3145 | /* Check if this is really a valid string containing no NUL byte */ | |
3146 | if (memchr(o->field.payload, 0, sz)) | |
3147 | return -EBADMSG; | |
3148 | ||
3149 | if (sz > j->data_threshold) | |
3150 | sz = j->data_threshold; | |
3151 | ||
3152 | if (!GREEDY_REALLOC(j->fields_buffer, j->fields_buffer_allocated, sz + 1)) | |
3153 | return -ENOMEM; | |
3154 | ||
3155 | memcpy(j->fields_buffer, o->field.payload, sz); | |
3156 | j->fields_buffer[sz] = 0; | |
3157 | ||
3158 | if (!field_is_valid(j->fields_buffer)) | |
3159 | return -EBADMSG; | |
3160 | ||
3161 | *field = j->fields_buffer; | |
3162 | return 1; | |
3163 | } | |
3164 | } | |
3165 | ||
3166 | _public_ void sd_journal_restart_fields(sd_journal *j) { | |
3167 | if (!j) | |
3168 | return; | |
3169 | ||
3170 | j->fields_file = NULL; | |
3171 | j->fields_hash_table_index = 0; | |
3172 | j->fields_offset = 0; | |
3173 | j->fields_file_lost = false; | |
3174 | } | |
3175 | ||
85210bff | 3176 | _public_ int sd_journal_reliable_fd(sd_journal *j) { |
1ae464e0 TA |
3177 | assert_return(j, -EINVAL); |
3178 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
3179 | |
3180 | return !j->on_network; | |
3181 | } | |
d4205751 LP |
3182 | |
3183 | static char *lookup_field(const char *field, void *userdata) { | |
3184 | sd_journal *j = userdata; | |
3185 | const void *data; | |
3186 | size_t size, d; | |
3187 | int r; | |
3188 | ||
3189 | assert(field); | |
3190 | assert(j); | |
3191 | ||
3192 | r = sd_journal_get_data(j, field, &data, &size); | |
3193 | if (r < 0 || | |
3194 | size > REPLACE_VAR_MAX) | |
3195 | return strdup(field); | |
3196 | ||
3197 | d = strlen(field) + 1; | |
3198 | ||
3199 | return strndup((const char*) data + d, size - d); | |
3200 | } | |
3201 | ||
3202 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
3203 | const void *data; | |
3204 | size_t size; | |
3205 | sd_id128_t id; | |
3206 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
3207 | char *t; | |
3208 | int r; | |
3209 | ||
1ae464e0 TA |
3210 | assert_return(j, -EINVAL); |
3211 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3212 | assert_return(ret, -EINVAL); | |
d4205751 LP |
3213 | |
3214 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
3215 | if (r < 0) | |
3216 | return r; | |
3217 | ||
3218 | cid = strndup((const char*) data + 11, size - 11); | |
3219 | if (!cid) | |
3220 | return -ENOMEM; | |
3221 | ||
3222 | r = sd_id128_from_string(cid, &id); | |
3223 | if (r < 0) | |
3224 | return r; | |
3225 | ||
844ec79b | 3226 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
3227 | if (r < 0) |
3228 | return r; | |
3229 | ||
3230 | t = replace_var(text, lookup_field, j); | |
3231 | if (!t) | |
3232 | return -ENOMEM; | |
3233 | ||
3234 | *ret = t; | |
3235 | return 0; | |
3236 | } | |
8f1e860f LP |
3237 | |
3238 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 3239 | assert_return(ret, -EINVAL); |
8f1e860f | 3240 | |
844ec79b | 3241 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 3242 | } |
93b73b06 LP |
3243 | |
3244 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
3245 | assert_return(j, -EINVAL); |
3246 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
3247 | |
3248 | j->data_threshold = sz; | |
3249 | return 0; | |
3250 | } | |
3251 | ||
3252 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
3253 | assert_return(j, -EINVAL); |
3254 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3255 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
3256 | |
3257 | *sz = j->data_threshold; | |
3258 | return 0; | |
3259 | } | |
39fd5b08 JS |
3260 | |
3261 | _public_ int sd_journal_has_runtime_files(sd_journal *j) { | |
3262 | assert_return(j, -EINVAL); | |
3263 | ||
3264 | return j->has_runtime_files; | |
3265 | } | |
3266 | ||
3267 | _public_ int sd_journal_has_persistent_files(sd_journal *j) { | |
3268 | assert_return(j, -EINVAL); | |
3269 | ||
3270 | return j->has_persistent_files; | |
3271 | } |