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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" |
9e5fd717 | 28 | #include "inotify-util.h" |
c004493c | 29 | #include "io-util.h" |
87d2c1ff | 30 | #include "journal-def.h" |
cec736d2 | 31 | #include "journal-file.h" |
07630cea | 32 | #include "journal-internal.h" |
cec736d2 | 33 | #include "list.h" |
de7b95cd | 34 | #include "lookup3.h" |
d8b4d14d | 35 | #include "nulstr-util.h" |
07630cea | 36 | #include "path-util.h" |
dccca82b | 37 | #include "process-util.h" |
d4205751 | 38 | #include "replace-var.h" |
15a5e950 LP |
39 | #include "stat-util.h" |
40 | #include "stdio-util.h" | |
07630cea LP |
41 | #include "string-util.h" |
42 | #include "strv.h" | |
456aa879 | 43 | #include "syslog-util.h" |
87d2c1ff | 44 | |
9e8abdf0 LP |
45 | #define JOURNAL_FILES_MAX 7168 |
46 | ||
85210bff LP |
47 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
48 | ||
8dd7cbce LP |
49 | /* The maximum size of variable values we'll expand in catalog entries. We bind this to PATH_MAX for now, as |
50 | * we want to be able to show all officially valid paths at least */ | |
51 | #define REPLACE_VAR_MAX PATH_MAX | |
d4205751 | 52 | |
93b73b06 LP |
53 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
54 | ||
a9a245c1 ZJS |
55 | static void remove_file_real(sd_journal *j, JournalFile *f); |
56 | ||
a65f06bb ZJS |
57 | static bool journal_pid_changed(sd_journal *j) { |
58 | assert(j); | |
59 | ||
60 | /* We don't support people creating a journal object and | |
61 | * keeping it around over a fork(). Let's complain. */ | |
62 | ||
df0ff127 | 63 | return j->original_pid != getpid_cached(); |
a65f06bb ZJS |
64 | } |
65 | ||
5768d259 | 66 | static int journal_put_error(sd_journal *j, int r, const char *path) { |
8231485b | 67 | _cleanup_free_ char *copy = NULL; |
3ac251b8 LP |
68 | int k; |
69 | ||
5768d259 LP |
70 | /* Memorize an error we encountered, and store which |
71 | * file/directory it was generated from. Note that we store | |
72 | * only *one* path per error code, as the error code is the | |
73 | * key into the hashmap, and the path is the value. This means | |
74 | * we keep track only of all error kinds, but not of all error | |
75 | * locations. This has the benefit that the hashmap cannot | |
76 | * grow beyond bounds. | |
77 | * | |
78 | * We return an error here only if we didn't manage to | |
79 | * memorize the real error. */ | |
80 | ||
6fe391c5 ZJS |
81 | if (r >= 0) |
82 | return r; | |
83 | ||
5768d259 LP |
84 | if (path) { |
85 | copy = strdup(path); | |
86 | if (!copy) | |
87 | return -ENOMEM; | |
8231485b | 88 | } |
5768d259 | 89 | |
faa7e5a4 | 90 | k = hashmap_ensure_put(&j->errors, NULL, INT_TO_PTR(r), copy); |
5768d259 | 91 | if (k < 0) { |
5768d259 LP |
92 | if (k == -EEXIST) |
93 | return 0; | |
94 | ||
95 | return k; | |
96 | } | |
97 | ||
8231485b | 98 | TAKE_PTR(copy); |
5768d259 | 99 | return 0; |
6fe391c5 ZJS |
100 | } |
101 | ||
de190aef | 102 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
103 | JournalFile *f; |
104 | ||
105 | assert(j); | |
106 | ||
107 | j->current_file = NULL; | |
108 | j->current_field = 0; | |
109 | ||
90e74a66 | 110 | ORDERED_HASHMAP_FOREACH(f, j->files) |
1fc605b0 | 111 | journal_file_reset_location(f); |
8f9b6cd9 LP |
112 | } |
113 | ||
a87247dd | 114 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 115 | assert(l); |
3742095b | 116 | assert(IN_SET(type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef | 117 | assert(f); |
de190aef | 118 | |
bba6e4ae LP |
119 | *l = (Location) { |
120 | .type = type, | |
121 | .seqnum = le64toh(o->entry.seqnum), | |
122 | .seqnum_id = f->header->seqnum_id, | |
123 | .realtime = le64toh(o->entry.realtime), | |
124 | .monotonic = le64toh(o->entry.monotonic), | |
125 | .boot_id = o->entry.boot_id, | |
126 | .xor_hash = le64toh(o->entry.xor_hash), | |
127 | .seqnum_set = true, | |
128 | .realtime_set = true, | |
129 | .monotonic_set = true, | |
130 | .xor_hash_set = true, | |
131 | }; | |
de190aef LP |
132 | } |
133 | ||
1eb6332d | 134 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
135 | assert(j); |
136 | assert(f); | |
137 | assert(o); | |
138 | ||
1eb6332d | 139 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
140 | |
141 | j->current_file = f; | |
142 | j->current_field = 0; | |
143 | ||
6573ef05 MS |
144 | /* Let f know its candidate entry was picked. */ |
145 | assert(f->location_type == LOCATION_SEEK); | |
146 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
147 | } |
148 | ||
cbdca852 | 149 | static int match_is_valid(const void *data, size_t size) { |
99534007 | 150 | const char *b = ASSERT_PTR(data); |
cbdca852 LP |
151 | |
152 | if (size < 2) | |
153 | return false; | |
154 | ||
e0567bc8 | 155 | if (((char*) data)[0] == '_' && ((char*) data)[1] == '_') |
cbdca852 LP |
156 | return false; |
157 | ||
abcdc02c | 158 | for (const char *p = b; p < b + size; p++) { |
cbdca852 LP |
159 | |
160 | if (*p == '=') | |
161 | return p > b; | |
162 | ||
163 | if (*p == '_') | |
164 | continue; | |
165 | ||
166 | if (*p >= 'A' && *p <= 'Z') | |
167 | continue; | |
168 | ||
ff25d338 | 169 | if (ascii_isdigit(*p)) |
cbdca852 LP |
170 | continue; |
171 | ||
172 | return false; | |
173 | } | |
174 | ||
175 | return false; | |
176 | } | |
177 | ||
178 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef | 179 | const uint8_t *a = _a, *b = _b; |
de190aef | 180 | |
abcdc02c | 181 | for (size_t j = 0; j < s && j < t; j++) { |
de190aef | 182 | |
de190aef | 183 | if (a[j] != b[j]) |
cbdca852 | 184 | return false; |
de190aef | 185 | |
cbdca852 LP |
186 | if (a[j] == '=') |
187 | return true; | |
de190aef LP |
188 | } |
189 | ||
04499a70 | 190 | assert_not_reached(); |
cbdca852 LP |
191 | } |
192 | ||
193 | static Match *match_new(Match *p, MatchType t) { | |
194 | Match *m; | |
195 | ||
2f5435a1 | 196 | m = new(Match, 1); |
cbdca852 LP |
197 | if (!m) |
198 | return NULL; | |
199 | ||
2f5435a1 LP |
200 | *m = (Match) { |
201 | .type = t, | |
202 | .parent = p, | |
203 | }; | |
cbdca852 | 204 | |
2f5435a1 | 205 | if (p) |
71fda00f | 206 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
207 | |
208 | return m; | |
209 | } | |
210 | ||
39dfc0de | 211 | static Match *match_free(Match *m) { |
cbdca852 LP |
212 | assert(m); |
213 | ||
214 | while (m->matches) | |
215 | match_free(m->matches); | |
216 | ||
217 | if (m->parent) | |
71fda00f | 218 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
219 | |
220 | free(m->data); | |
39dfc0de | 221 | return mfree(m); |
cbdca852 LP |
222 | } |
223 | ||
39dfc0de | 224 | static Match *match_free_if_empty(Match *m) { |
c5a10d9c | 225 | if (!m || m->matches) |
39dfc0de | 226 | return m; |
cbdca852 | 227 | |
39dfc0de | 228 | return match_free(m); |
de190aef LP |
229 | } |
230 | ||
a5344d2c | 231 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
03677889 | 232 | Match *add_here = NULL, *m = NULL; |
cde8c5f7 | 233 | uint64_t hash; |
87d2c1ff | 234 | |
1ae464e0 TA |
235 | assert_return(j, -EINVAL); |
236 | assert_return(!journal_pid_changed(j), -ECHILD); | |
237 | assert_return(data, -EINVAL); | |
cbdca852 LP |
238 | |
239 | if (size == 0) | |
240 | size = strlen(data); | |
241 | ||
1ae464e0 | 242 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 243 | |
cd34b3c6 HH |
244 | /* level 0: AND term |
245 | * level 1: OR terms | |
246 | * level 2: AND terms | |
247 | * level 3: OR terms | |
248 | * level 4: concrete matches */ | |
cbdca852 LP |
249 | |
250 | if (!j->level0) { | |
cd34b3c6 | 251 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
252 | if (!j->level0) |
253 | return -ENOMEM; | |
254 | } | |
255 | ||
256 | if (!j->level1) { | |
cd34b3c6 | 257 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
258 | if (!j->level1) |
259 | return -ENOMEM; | |
260 | } | |
261 | ||
cd34b3c6 HH |
262 | if (!j->level2) { |
263 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
264 | if (!j->level2) | |
265 | return -ENOMEM; | |
266 | } | |
267 | ||
268 | assert(j->level0->type == MATCH_AND_TERM); | |
269 | assert(j->level1->type == MATCH_OR_TERM); | |
270 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 271 | |
4ce534f4 LP |
272 | /* Old-style Jenkins (unkeyed) hashing only here. We do not cover new-style siphash (keyed) hashing |
273 | * here, since it's different for each file, and thus can't be pre-calculated in the Match object. */ | |
20b0acfa | 274 | hash = jenkins_hash64(data, size); |
de190aef | 275 | |
cd34b3c6 HH |
276 | LIST_FOREACH(matches, l3, j->level2->matches) { |
277 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 278 | |
cd34b3c6 HH |
279 | LIST_FOREACH(matches, l4, l3->matches) { |
280 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 281 | |
cbdca852 LP |
282 | /* Exactly the same match already? Then ignore |
283 | * this addition */ | |
cde8c5f7 | 284 | if (l4->hash == hash && |
cd34b3c6 HH |
285 | l4->size == size && |
286 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
287 | return 0; |
288 | ||
289 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
290 | if (same_field(data, size, l4->data, l4->size)) { |
291 | add_here = l3; | |
cbdca852 LP |
292 | break; |
293 | } | |
294 | } | |
295 | ||
296 | if (add_here) | |
297 | break; | |
de190aef LP |
298 | } |
299 | ||
cbdca852 | 300 | if (!add_here) { |
cd34b3c6 | 301 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
302 | if (!add_here) |
303 | goto fail; | |
304 | } | |
305 | ||
306 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 307 | if (!m) |
cbdca852 | 308 | goto fail; |
87d2c1ff | 309 | |
cde8c5f7 | 310 | m->hash = hash; |
1cc101f1 | 311 | m->size = size; |
cbdca852 LP |
312 | m->data = memdup(data, size); |
313 | if (!m->data) | |
314 | goto fail; | |
315 | ||
316 | detach_location(j); | |
317 | ||
318 | return 0; | |
319 | ||
320 | fail: | |
418cce62 | 321 | match_free(m); |
c5a10d9c | 322 | match_free_if_empty(add_here); |
39dfc0de YW |
323 | j->level2 = match_free_if_empty(j->level2); |
324 | j->level1 = match_free_if_empty(j->level1); | |
325 | j->level0 = match_free_if_empty(j->level0); | |
cbdca852 LP |
326 | |
327 | return -ENOMEM; | |
328 | } | |
329 | ||
cd34b3c6 | 330 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
331 | assert_return(j, -EINVAL); |
332 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 333 | |
cbdca852 LP |
334 | if (!j->level0) |
335 | return 0; | |
336 | ||
337 | if (!j->level1) | |
338 | return 0; | |
339 | ||
340 | if (!j->level1->matches) | |
341 | return 0; | |
342 | ||
cd34b3c6 HH |
343 | j->level1 = NULL; |
344 | j->level2 = NULL; | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
349 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
350 | assert_return(j, -EINVAL); |
351 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
352 | |
353 | if (!j->level0) | |
354 | return 0; | |
355 | ||
356 | if (!j->level1) | |
357 | return 0; | |
358 | ||
359 | if (!j->level2) | |
360 | return 0; | |
361 | ||
362 | if (!j->level2->matches) | |
363 | return 0; | |
cbdca852 | 364 | |
cd34b3c6 | 365 | j->level2 = NULL; |
cbdca852 LP |
366 | return 0; |
367 | } | |
368 | ||
369 | static char *match_make_string(Match *m) { | |
6b430fdb | 370 | char *p = NULL, *r; |
cbdca852 LP |
371 | bool enclose = false; |
372 | ||
373 | if (!m) | |
4ad16808 | 374 | return strdup("none"); |
cbdca852 LP |
375 | |
376 | if (m->type == MATCH_DISCRETE) | |
9e8b1ec0 | 377 | return cescape_length(m->data, m->size); |
cbdca852 | 378 | |
cbdca852 LP |
379 | LIST_FOREACH(matches, i, m->matches) { |
380 | char *t, *k; | |
381 | ||
382 | t = match_make_string(i); | |
6b430fdb ZJS |
383 | if (!t) |
384 | return mfree(p); | |
cbdca852 LP |
385 | |
386 | if (p) { | |
605405c6 | 387 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t); |
cbdca852 LP |
388 | free(p); |
389 | free(t); | |
390 | ||
391 | if (!k) | |
392 | return NULL; | |
393 | ||
394 | p = k; | |
395 | ||
396 | enclose = true; | |
bc302926 | 397 | } else |
cbdca852 | 398 | p = t; |
87d2c1ff LP |
399 | } |
400 | ||
cbdca852 | 401 | if (enclose) { |
605405c6 | 402 | r = strjoin("(", p, ")"); |
cbdca852 LP |
403 | free(p); |
404 | return r; | |
405 | } | |
87d2c1ff | 406 | |
cbdca852 LP |
407 | return p; |
408 | } | |
de7b95cd | 409 | |
cbdca852 LP |
410 | char *journal_make_match_string(sd_journal *j) { |
411 | assert(j); | |
8f9b6cd9 | 412 | |
cbdca852 | 413 | return match_make_string(j->level0); |
87d2c1ff LP |
414 | } |
415 | ||
a5344d2c LP |
416 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
417 | if (!j) | |
418 | return; | |
87d2c1ff | 419 | |
cbdca852 LP |
420 | if (j->level0) |
421 | match_free(j->level0); | |
de7b95cd | 422 | |
cd34b3c6 | 423 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 424 | |
de190aef | 425 | detach_location(j); |
87d2c1ff LP |
426 | } |
427 | ||
b6849042 | 428 | _pure_ static int compare_with_location(const JournalFile *f, const Location *l, const JournalFile *current_file) { |
90c88092 YW |
429 | int r; |
430 | ||
487d3720 | 431 | assert(f); |
de190aef | 432 | assert(l); |
487d3720 | 433 | assert(f->location_type == LOCATION_SEEK); |
4c701096 | 434 | assert(IN_SET(l->type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef LP |
435 | |
436 | if (l->monotonic_set && | |
487d3720 | 437 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 438 | l->realtime_set && |
487d3720 | 439 | f->current_realtime == l->realtime && |
de190aef | 440 | l->xor_hash_set && |
b6849042 | 441 | f->current_xor_hash == l->xor_hash && |
b17f651a | 442 | l->seqnum_set && |
443 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id) && | |
444 | f->current_seqnum == l->seqnum && | |
b6849042 | 445 | f != current_file) |
de190aef LP |
446 | return 0; |
447 | ||
448 | if (l->seqnum_set && | |
487d3720 | 449 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 450 | |
90c88092 YW |
451 | r = CMP(f->current_seqnum, l->seqnum); |
452 | if (r != 0) | |
453 | return r; | |
de190aef LP |
454 | } |
455 | ||
456 | if (l->monotonic_set && | |
487d3720 | 457 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 458 | |
90c88092 YW |
459 | r = CMP(f->current_monotonic, l->monotonic); |
460 | if (r != 0) | |
461 | return r; | |
de190aef LP |
462 | } |
463 | ||
464 | if (l->realtime_set) { | |
465 | ||
90c88092 YW |
466 | r = CMP(f->current_realtime, l->realtime); |
467 | if (r != 0) | |
468 | return r; | |
de190aef LP |
469 | } |
470 | ||
471 | if (l->xor_hash_set) { | |
de190aef | 472 | |
90c88092 YW |
473 | r = CMP(f->current_xor_hash, l->xor_hash); |
474 | if (r != 0) | |
475 | return r; | |
de190aef LP |
476 | } |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
cbdca852 LP |
481 | static int next_for_match( |
482 | sd_journal *j, | |
483 | Match *m, | |
484 | JournalFile *f, | |
485 | uint64_t after_offset, | |
486 | direction_t direction, | |
487 | Object **ret, | |
488 | uint64_t *offset) { | |
489 | ||
de7b95cd | 490 | int r; |
cbdca852 | 491 | uint64_t np = 0; |
de7b95cd LP |
492 | |
493 | assert(j); | |
cbdca852 LP |
494 | assert(m); |
495 | assert(f); | |
de7b95cd | 496 | |
cbdca852 | 497 | if (m->type == MATCH_DISCRETE) { |
ec50313d DDM |
498 | Object *d; |
499 | uint64_t hash; | |
de190aef | 500 | |
4ce534f4 LP |
501 | /* If the keyed hash logic is used, we need to calculate the hash fresh per file. Otherwise |
502 | * we can use what we pre-calculated. */ | |
503 | if (JOURNAL_HEADER_KEYED_HASH(f->header)) | |
504 | hash = journal_file_hash_data(f, m->data, m->size); | |
505 | else | |
506 | hash = m->hash; | |
507 | ||
ec50313d | 508 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, hash, &d, NULL); |
de190aef LP |
509 | if (r <= 0) |
510 | return r; | |
511 | ||
ec50313d | 512 | return journal_file_move_to_entry_by_offset_for_data(f, d, after_offset, direction, ret, offset); |
de190aef | 513 | |
cbdca852 | 514 | } else if (m->type == MATCH_OR_TERM) { |
de7b95cd | 515 | |
cbdca852 | 516 | /* Find the earliest match beyond after_offset */ |
de190aef | 517 | |
cbdca852 LP |
518 | LIST_FOREACH(matches, i, m->matches) { |
519 | uint64_t cp; | |
de190aef | 520 | |
cbdca852 | 521 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
522 | if (r < 0) |
523 | return r; | |
cbdca852 | 524 | else if (r > 0) { |
bc302926 | 525 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
526 | np = cp; |
527 | } | |
528 | } | |
b4e5f920 | 529 | |
bc302926 ZJS |
530 | if (np == 0) |
531 | return 0; | |
532 | ||
cbdca852 | 533 | } else if (m->type == MATCH_AND_TERM) { |
03677889 | 534 | Match *last_moved; |
de190aef | 535 | |
cbdca852 | 536 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 537 | * this until we find an offset that matches for all |
cbdca852 | 538 | * matches. */ |
de190aef | 539 | |
cbdca852 LP |
540 | if (!m->matches) |
541 | return 0; | |
de7b95cd | 542 | |
2bc8ca0c ZJS |
543 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
544 | if (r <= 0) | |
545 | return r; | |
de190aef | 546 | |
2bc8ca0c ZJS |
547 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
548 | last_moved = m->matches; | |
de190aef | 549 | |
2bc8ca0c ZJS |
550 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
551 | uint64_t cp; | |
de190aef | 552 | |
2bc8ca0c ZJS |
553 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
554 | if (r <= 0) | |
555 | return r; | |
de190aef | 556 | |
2bc8ca0c ZJS |
557 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
558 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
559 | np = cp; | |
560 | last_moved = i; | |
de190aef | 561 | } |
2bc8ca0c | 562 | } |
cbdca852 | 563 | } |
de190aef | 564 | |
bc302926 | 565 | assert(np > 0); |
de190aef | 566 | |
4d8b09e4 DDM |
567 | if (ret) { |
568 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, ret); | |
569 | if (r < 0) | |
570 | return r; | |
571 | } | |
de7b95cd | 572 | |
de190aef | 573 | if (offset) |
cbdca852 | 574 | *offset = np; |
de190aef LP |
575 | |
576 | return 1; | |
577 | } | |
578 | ||
cbdca852 LP |
579 | static int find_location_for_match( |
580 | sd_journal *j, | |
581 | Match *m, | |
582 | JournalFile *f, | |
583 | direction_t direction, | |
584 | Object **ret, | |
585 | uint64_t *offset) { | |
586 | ||
de190aef | 587 | int r; |
de190aef LP |
588 | |
589 | assert(j); | |
cbdca852 | 590 | assert(m); |
de190aef | 591 | assert(f); |
de190aef | 592 | |
cbdca852 | 593 | if (m->type == MATCH_DISCRETE) { |
ec50313d | 594 | Object *d; |
4ce534f4 LP |
595 | uint64_t dp, hash; |
596 | ||
597 | if (JOURNAL_HEADER_KEYED_HASH(f->header)) | |
598 | hash = journal_file_hash_data(f, m->data, m->size); | |
599 | else | |
600 | hash = m->hash; | |
de190aef | 601 | |
ec50313d | 602 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, hash, &d, &dp); |
de7b95cd LP |
603 | if (r <= 0) |
604 | return r; | |
605 | ||
cbdca852 | 606 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 607 | |
cbdca852 | 608 | if (j->current_location.type == LOCATION_HEAD) |
1db6dbb1 | 609 | return journal_file_next_entry_for_data(f, d, DIRECTION_DOWN, ret, offset); |
cbdca852 | 610 | if (j->current_location.type == LOCATION_TAIL) |
1db6dbb1 | 611 | return journal_file_next_entry_for_data(f, d, DIRECTION_UP, ret, offset); |
cbdca852 | 612 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
ec50313d | 613 | return journal_file_move_to_entry_by_seqnum_for_data(f, d, j->current_location.seqnum, direction, ret, offset); |
cbdca852 | 614 | if (j->current_location.monotonic_set) { |
ec50313d | 615 | r = journal_file_move_to_entry_by_monotonic_for_data(f, d, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); |
cbdca852 LP |
616 | if (r != -ENOENT) |
617 | return r; | |
ec50313d DDM |
618 | |
619 | /* The data object might have been invalidated. */ | |
620 | r = journal_file_move_to_object(f, OBJECT_DATA, dp, &d); | |
621 | if (r < 0) | |
622 | return r; | |
cbdca852 LP |
623 | } |
624 | if (j->current_location.realtime_set) | |
ec50313d | 625 | return journal_file_move_to_entry_by_realtime_for_data(f, d, j->current_location.realtime, direction, ret, offset); |
de190aef | 626 | |
ec50313d | 627 | return journal_file_next_entry_for_data(f, d, direction, ret, offset); |
de7b95cd | 628 | |
cbdca852 LP |
629 | } else if (m->type == MATCH_OR_TERM) { |
630 | uint64_t np = 0; | |
de7b95cd | 631 | |
cbdca852 | 632 | /* Find the earliest match */ |
de7b95cd | 633 | |
cbdca852 LP |
634 | LIST_FOREACH(matches, i, m->matches) { |
635 | uint64_t cp; | |
636 | ||
637 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
638 | if (r < 0) | |
639 | return r; | |
640 | else if (r > 0) { | |
641 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
642 | np = cp; | |
de190aef | 643 | } |
cbdca852 | 644 | } |
de190aef | 645 | |
cbdca852 LP |
646 | if (np == 0) |
647 | return 0; | |
de7b95cd | 648 | |
4d8b09e4 DDM |
649 | if (ret) { |
650 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, ret); | |
651 | if (r < 0) | |
652 | return r; | |
653 | } | |
de7b95cd | 654 | |
cbdca852 LP |
655 | if (offset) |
656 | *offset = np; | |
de190aef | 657 | |
cbdca852 | 658 | return 1; |
e892bd17 | 659 | |
cbdca852 | 660 | } else { |
cbdca852 LP |
661 | uint64_t np = 0; |
662 | ||
663 | assert(m->type == MATCH_AND_TERM); | |
664 | ||
665 | /* First jump to the last match, and then find the | |
666 | * next one where all matches match */ | |
667 | ||
668 | if (!m->matches) | |
669 | return 0; | |
670 | ||
671 | LIST_FOREACH(matches, i, m->matches) { | |
672 | uint64_t cp; | |
673 | ||
674 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
675 | if (r <= 0) | |
4b067dc9 LP |
676 | return r; |
677 | ||
bc302926 | 678 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 679 | np = cp; |
de7b95cd LP |
680 | } |
681 | ||
cbdca852 LP |
682 | return next_for_match(j, m, f, np, direction, ret, offset); |
683 | } | |
684 | } | |
de190aef | 685 | |
cbdca852 LP |
686 | static int find_location_with_matches( |
687 | sd_journal *j, | |
688 | JournalFile *f, | |
689 | direction_t direction, | |
690 | Object **ret, | |
691 | uint64_t *offset) { | |
692 | ||
693 | int r; | |
694 | ||
695 | assert(j); | |
696 | assert(f); | |
697 | assert(ret); | |
698 | assert(offset); | |
699 | ||
700 | if (!j->level0) { | |
701 | /* No matches is simple */ | |
702 | ||
703 | if (j->current_location.type == LOCATION_HEAD) | |
1db6dbb1 | 704 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 705 | if (j->current_location.type == LOCATION_TAIL) |
1db6dbb1 | 706 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
707 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
708 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
709 | if (j->current_location.monotonic_set) { | |
710 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
711 | if (r != -ENOENT) | |
712 | return r; | |
de7b95cd | 713 | } |
cbdca852 LP |
714 | if (j->current_location.realtime_set) |
715 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 716 | |
f534928a | 717 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
718 | } else |
719 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
720 | } | |
de7b95cd | 721 | |
cbdca852 LP |
722 | static int next_with_matches( |
723 | sd_journal *j, | |
724 | JournalFile *f, | |
725 | direction_t direction, | |
726 | Object **ret, | |
727 | uint64_t *offset) { | |
728 | ||
cbdca852 LP |
729 | assert(j); |
730 | assert(f); | |
731 | assert(ret); | |
732 | assert(offset); | |
733 | ||
cbdca852 LP |
734 | /* No matches is easy. We simple advance the file |
735 | * pointer by one. */ | |
736 | if (!j->level0) | |
b29ddfcb | 737 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
738 | |
739 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 740 | * with an offset at least one step larger */ |
b29ddfcb MS |
741 | return next_for_match(j, j->level0, f, |
742 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
743 | : f->current_offset - 1, | |
744 | direction, ret, offset); | |
de7b95cd LP |
745 | } |
746 | ||
58439db4 | 747 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 748 | Object *c; |
6e693b42 | 749 | uint64_t cp, n_entries; |
cbdca852 | 750 | int r; |
de190aef LP |
751 | |
752 | assert(j); | |
753 | assert(f); | |
754 | ||
950c07d4 MS |
755 | n_entries = le64toh(f->header->n_entries); |
756 | ||
757 | /* If we hit EOF before, we don't need to look into this file again | |
758 | * unless direction changed or new entries appeared. */ | |
759 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
760 | n_entries == f->last_n_entries) | |
761 | return 0; | |
668c965a | 762 | |
950c07d4 MS |
763 | f->last_n_entries = n_entries; |
764 | ||
765 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
766 | /* LOCATION_SEEK here means we did the work in a previous |
767 | * iteration and the current location already points to a | |
768 | * candidate entry. */ | |
487d3720 MS |
769 | if (f->location_type != LOCATION_SEEK) { |
770 | r = next_with_matches(j, f, direction, &c, &cp); | |
771 | if (r <= 0) | |
772 | return r; | |
466ccd92 | 773 | |
950c07d4 | 774 | journal_file_save_location(f, c, cp); |
487d3720 | 775 | } |
de190aef | 776 | } else { |
950c07d4 MS |
777 | f->last_direction = direction; |
778 | ||
cbdca852 | 779 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
780 | if (r <= 0) |
781 | return r; | |
487d3720 | 782 | |
950c07d4 | 783 | journal_file_save_location(f, c, cp); |
de190aef LP |
784 | } |
785 | ||
bc302926 | 786 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
787 | * that is actually different from what we were previously |
788 | * looking at. This is necessary to handle entries which exist | |
789 | * in two (or more) journal files, and which shall all be | |
790 | * suppressed but one. */ | |
791 | ||
de190aef LP |
792 | for (;;) { |
793 | bool found; | |
794 | ||
795 | if (j->current_location.type == LOCATION_DISCRETE) { | |
796 | int k; | |
797 | ||
b6849042 | 798 | k = compare_with_location(f, &j->current_location, j->current_file); |
1cdf7175 CH |
799 | |
800 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
801 | } else |
802 | found = true; | |
803 | ||
487d3720 | 804 | if (found) |
de190aef | 805 | return 1; |
de190aef LP |
806 | |
807 | r = next_with_matches(j, f, direction, &c, &cp); | |
808 | if (r <= 0) | |
809 | return r; | |
487d3720 | 810 | |
950c07d4 | 811 | journal_file_save_location(f, c, cp); |
de190aef LP |
812 | } |
813 | } | |
814 | ||
e892bd17 | 815 | static int real_journal_next(sd_journal *j, direction_t direction) { |
5d4ba7f2 | 816 | JournalFile *new_file = NULL; |
abcdc02c | 817 | unsigned n_files; |
5d4ba7f2 | 818 | const void **files; |
a002d44b | 819 | Object *o; |
87d2c1ff LP |
820 | int r; |
821 | ||
1ae464e0 TA |
822 | assert_return(j, -EINVAL); |
823 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 824 | |
5d4ba7f2 VC |
825 | r = iterated_cache_get(j->files_cache, NULL, &files, &n_files); |
826 | if (r < 0) | |
827 | return r; | |
828 | ||
abcdc02c | 829 | for (unsigned i = 0; i < n_files; i++) { |
5d4ba7f2 | 830 | JournalFile *f = (JournalFile *)files[i]; |
de190aef | 831 | bool found; |
87d2c1ff | 832 | |
58439db4 | 833 | r = next_beyond_location(j, f, direction); |
e590af26 | 834 | if (r < 0) { |
da927ba9 | 835 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 836 | remove_file_real(j, f); |
e590af26 | 837 | continue; |
6573ef05 MS |
838 | } else if (r == 0) { |
839 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 840 | continue; |
6573ef05 | 841 | } |
87d2c1ff | 842 | |
468b21de | 843 | if (!new_file) |
de190aef LP |
844 | found = true; |
845 | else { | |
846 | int k; | |
847 | ||
d8ae66d7 | 848 | k = journal_file_compare_locations(f, new_file); |
de190aef | 849 | |
bc302926 | 850 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
851 | } |
852 | ||
e499c999 | 853 | if (found) |
468b21de | 854 | new_file = f; |
87d2c1ff LP |
855 | } |
856 | ||
468b21de | 857 | if (!new_file) |
de190aef | 858 | return 0; |
ae2cc8ef | 859 | |
e499c999 | 860 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
861 | if (r < 0) |
862 | return r; | |
863 | ||
1eb6332d | 864 | set_location(j, new_file, o); |
ae2cc8ef | 865 | |
de190aef LP |
866 | return 1; |
867 | } | |
ae2cc8ef | 868 | |
a5344d2c | 869 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
870 | return real_journal_next(j, DIRECTION_DOWN); |
871 | } | |
ae2cc8ef | 872 | |
a5344d2c | 873 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
874 | return real_journal_next(j, DIRECTION_UP); |
875 | } | |
ae2cc8ef | 876 | |
6f003b43 | 877 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 878 | int c = 0, r; |
ae2cc8ef | 879 | |
1ae464e0 TA |
880 | assert_return(j, -EINVAL); |
881 | assert_return(!journal_pid_changed(j), -ECHILD); | |
41d544a1 | 882 | assert_return(skip <= INT_MAX, -ERANGE); |
de190aef | 883 | |
6f003b43 LP |
884 | if (skip == 0) { |
885 | /* If this is not a discrete skip, then at least | |
886 | * resolve the current location */ | |
04884354 LK |
887 | if (j->current_location.type != LOCATION_DISCRETE) { |
888 | r = real_journal_next(j, direction); | |
889 | if (r < 0) | |
890 | return r; | |
891 | } | |
6f003b43 LP |
892 | |
893 | return 0; | |
894 | } | |
895 | ||
896 | do { | |
897 | r = real_journal_next(j, direction); | |
de190aef LP |
898 | if (r < 0) |
899 | return r; | |
900 | ||
901 | if (r == 0) | |
902 | return c; | |
903 | ||
904 | skip--; | |
905 | c++; | |
6f003b43 | 906 | } while (skip > 0); |
87d2c1ff | 907 | |
de190aef | 908 | return c; |
87d2c1ff LP |
909 | } |
910 | ||
6f003b43 LP |
911 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
912 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
913 | } | |
de190aef | 914 | |
6f003b43 LP |
915 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
916 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
917 | } |
918 | ||
a5344d2c | 919 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 920 | Object *o; |
87d2c1ff LP |
921 | int r; |
922 | ||
1ae464e0 TA |
923 | assert_return(j, -EINVAL); |
924 | assert_return(!journal_pid_changed(j), -ECHILD); | |
925 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 926 | |
3fbf9cbb LP |
927 | if (!j->current_file || j->current_file->current_offset <= 0) |
928 | return -EADDRNOTAVAIL; | |
87d2c1ff | 929 | |
de190aef | 930 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
931 | if (r < 0) |
932 | return r; | |
933 | ||
3fbf9cbb | 934 | if (asprintf(cursor, |
507f22bd | 935 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
85b55869 LP |
936 | SD_ID128_TO_STRING(j->current_file->header->seqnum_id), le64toh(o->entry.seqnum), |
937 | SD_ID128_TO_STRING(o->entry.boot_id), le64toh(o->entry.monotonic), | |
507f22bd ZJS |
938 | le64toh(o->entry.realtime), |
939 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 940 | return -ENOMEM; |
87d2c1ff | 941 | |
6f47ad30 | 942 | return 0; |
87d2c1ff LP |
943 | } |
944 | ||
a5344d2c | 945 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
de190aef | 946 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
da277e90 ZJS |
947 | bool seqnum_id_set = false, |
948 | seqnum_set = false, | |
949 | boot_id_set = false, | |
950 | monotonic_set = false, | |
951 | realtime_set = false, | |
952 | xor_hash_set = false; | |
de190aef | 953 | sd_id128_t seqnum_id, boot_id; |
da277e90 | 954 | int r; |
de190aef | 955 | |
1ae464e0 TA |
956 | assert_return(j, -EINVAL); |
957 | assert_return(!journal_pid_changed(j), -ECHILD); | |
958 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 959 | |
da277e90 ZJS |
960 | for (const char *p = cursor;;) { |
961 | _cleanup_free_ char *word = NULL; | |
de190aef | 962 | |
da277e90 ZJS |
963 | r = extract_first_word(&p, &word, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
964 | if (r < 0) | |
965 | return r; | |
966 | if (r == 0) | |
967 | break; | |
de190aef | 968 | |
da277e90 ZJS |
969 | if (word[0] == '\0' || word[1] != '=') |
970 | return -EINVAL; | |
de190aef | 971 | |
a2a5291b | 972 | switch (word[0]) { |
de190aef LP |
973 | case 's': |
974 | seqnum_id_set = true; | |
da277e90 ZJS |
975 | r = sd_id128_from_string(word + 2, &seqnum_id); |
976 | if (r < 0) | |
977 | return r; | |
de190aef LP |
978 | break; |
979 | ||
980 | case 'i': | |
981 | seqnum_set = true; | |
da277e90 ZJS |
982 | if (sscanf(word + 2, "%llx", &seqnum) != 1) |
983 | return -EINVAL; | |
de190aef LP |
984 | break; |
985 | ||
986 | case 'b': | |
987 | boot_id_set = true; | |
da277e90 | 988 | r = sd_id128_from_string(word + 2, &boot_id); |
c9f5ac09 SS |
989 | if (r < 0) |
990 | return r; | |
de190aef LP |
991 | break; |
992 | ||
993 | case 'm': | |
994 | monotonic_set = true; | |
da277e90 ZJS |
995 | if (sscanf(word + 2, "%llx", &monotonic) != 1) |
996 | return -EINVAL; | |
de190aef LP |
997 | break; |
998 | ||
999 | case 't': | |
1000 | realtime_set = true; | |
da277e90 ZJS |
1001 | if (sscanf(word + 2, "%llx", &realtime) != 1) |
1002 | return -EINVAL; | |
de190aef LP |
1003 | break; |
1004 | ||
1005 | case 'x': | |
1006 | xor_hash_set = true; | |
da277e90 ZJS |
1007 | if (sscanf(word + 2, "%llx", &xor_hash) != 1) |
1008 | return -EINVAL; | |
de190aef LP |
1009 | break; |
1010 | } | |
de190aef LP |
1011 | } |
1012 | ||
1013 | if ((!seqnum_set || !seqnum_id_set) && | |
1014 | (!monotonic_set || !boot_id_set) && | |
1015 | !realtime_set) | |
1016 | return -EINVAL; | |
1017 | ||
bba6e4ae LP |
1018 | detach_location(j); |
1019 | j->current_location = (Location) { | |
1020 | .type = LOCATION_SEEK, | |
1021 | }; | |
de190aef LP |
1022 | |
1023 | if (realtime_set) { | |
1024 | j->current_location.realtime = (uint64_t) realtime; | |
1025 | j->current_location.realtime_set = true; | |
1026 | } | |
1027 | ||
1028 | if (seqnum_set && seqnum_id_set) { | |
1029 | j->current_location.seqnum = (uint64_t) seqnum; | |
1030 | j->current_location.seqnum_id = seqnum_id; | |
1031 | j->current_location.seqnum_set = true; | |
1032 | } | |
1033 | ||
1034 | if (monotonic_set && boot_id_set) { | |
1035 | j->current_location.monotonic = (uint64_t) monotonic; | |
1036 | j->current_location.boot_id = boot_id; | |
1037 | j->current_location.monotonic_set = true; | |
1038 | } | |
1039 | ||
1040 | if (xor_hash_set) { | |
1041 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1042 | j->current_location.xor_hash_set = true; | |
1043 | } | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
c6511e85 LP |
1048 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1049 | int r; | |
c6511e85 LP |
1050 | Object *o; |
1051 | ||
1ae464e0 TA |
1052 | assert_return(j, -EINVAL); |
1053 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1054 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1055 | |
1056 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1057 | return -EADDRNOTAVAIL; | |
1058 | ||
1059 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1060 | if (r < 0) | |
1061 | return r; | |
1062 | ||
9ed794a3 | 1063 | for (;;) { |
c6511e85 | 1064 | _cleanup_free_ char *item = NULL; |
c6511e85 | 1065 | unsigned long long ll; |
7294bb5b | 1066 | sd_id128_t id; |
c6511e85 LP |
1067 | int k = 0; |
1068 | ||
7294bb5b SS |
1069 | r = extract_first_word(&cursor, &item, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
1070 | if (r < 0) | |
1071 | return r; | |
c6511e85 | 1072 | |
7294bb5b SS |
1073 | if (r == 0) |
1074 | break; | |
c6511e85 | 1075 | |
7294bb5b SS |
1076 | if (strlen(item) < 2 || item[1] != '=') |
1077 | return -EINVAL; | |
1078 | ||
1079 | switch (item[0]) { | |
c6511e85 LP |
1080 | |
1081 | case 's': | |
1082 | k = sd_id128_from_string(item+2, &id); | |
1083 | if (k < 0) | |
1084 | return k; | |
1085 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1086 | return 0; | |
1087 | break; | |
1088 | ||
1089 | case 'i': | |
1090 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1091 | return -EINVAL; | |
1092 | if (ll != le64toh(o->entry.seqnum)) | |
1093 | return 0; | |
1094 | break; | |
1095 | ||
1096 | case 'b': | |
1097 | k = sd_id128_from_string(item+2, &id); | |
1098 | if (k < 0) | |
1099 | return k; | |
1100 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1101 | return 0; | |
1102 | break; | |
1103 | ||
1104 | case 'm': | |
1105 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1106 | return -EINVAL; | |
1107 | if (ll != le64toh(o->entry.monotonic)) | |
1108 | return 0; | |
1109 | break; | |
1110 | ||
1111 | case 't': | |
1112 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1113 | return -EINVAL; | |
1114 | if (ll != le64toh(o->entry.realtime)) | |
1115 | return 0; | |
1116 | break; | |
1117 | ||
1118 | case 'x': | |
1119 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1120 | return -EINVAL; | |
1121 | if (ll != le64toh(o->entry.xor_hash)) | |
1122 | return 0; | |
1123 | break; | |
1124 | } | |
1125 | } | |
1126 | ||
1127 | return 1; | |
1128 | } | |
1129 | ||
a5344d2c | 1130 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1131 | assert_return(j, -EINVAL); |
1132 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1133 | |
bba6e4ae LP |
1134 | detach_location(j); |
1135 | ||
1136 | j->current_location = (Location) { | |
1137 | .type = LOCATION_SEEK, | |
1138 | .boot_id = boot_id, | |
1139 | .monotonic = usec, | |
1140 | .monotonic_set = true, | |
1141 | }; | |
de190aef LP |
1142 | |
1143 | return 0; | |
1144 | } | |
1145 | ||
a5344d2c | 1146 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1147 | assert_return(j, -EINVAL); |
1148 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1149 | |
bba6e4ae LP |
1150 | detach_location(j); |
1151 | ||
1152 | j->current_location = (Location) { | |
1153 | .type = LOCATION_SEEK, | |
1154 | .realtime = usec, | |
1155 | .realtime_set = true, | |
1156 | }; | |
de190aef LP |
1157 | |
1158 | return 0; | |
1159 | } | |
1160 | ||
a5344d2c | 1161 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1162 | assert_return(j, -EINVAL); |
1163 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1164 | |
bba6e4ae LP |
1165 | detach_location(j); |
1166 | ||
1167 | j->current_location = (Location) { | |
1168 | .type = LOCATION_HEAD, | |
1169 | }; | |
de190aef LP |
1170 | |
1171 | return 0; | |
1172 | } | |
1173 | ||
a5344d2c | 1174 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1175 | assert_return(j, -EINVAL); |
1176 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1177 | |
bba6e4ae LP |
1178 | detach_location(j); |
1179 | ||
1180 | j->current_location = (Location) { | |
1181 | .type = LOCATION_TAIL, | |
1182 | }; | |
de190aef LP |
1183 | |
1184 | return 0; | |
87d2c1ff LP |
1185 | } |
1186 | ||
85210bff | 1187 | static void check_network(sd_journal *j, int fd) { |
85210bff LP |
1188 | assert(j); |
1189 | ||
1190 | if (j->on_network) | |
1191 | return; | |
1192 | ||
77f9fa3b | 1193 | j->on_network = fd_is_network_fs(fd); |
85210bff LP |
1194 | } |
1195 | ||
a688baa8 ZJS |
1196 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1197 | const char *full, *tilded, *atted; | |
1198 | ||
63c372cb LP |
1199 | full = strjoina(prefix, ".journal"); |
1200 | tilded = strjoina(full, "~"); | |
1201 | atted = strjoina(prefix, "@"); | |
a688baa8 | 1202 | |
0cbd293e | 1203 | return STR_IN_SET(filename, full, tilded) || |
a688baa8 ZJS |
1204 | startswith(filename, atted); |
1205 | } | |
1206 | ||
1207 | static bool file_type_wanted(int flags, const char *filename) { | |
d617408e LP |
1208 | assert(filename); |
1209 | ||
a688baa8 ZJS |
1210 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) |
1211 | return false; | |
1212 | ||
1213 | /* no flags set → every type is OK */ | |
1214 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1215 | return true; | |
1216 | ||
1217 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1218 | return true; | |
1219 | ||
1220 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1221 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1222 | ||
5ffa8c81 | 1223 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1224 | |
1225 | if (file_has_type_prefix(prefix, filename)) | |
1226 | return true; | |
1227 | } | |
1228 | ||
1229 | return false; | |
1230 | } | |
1231 | ||
5d1ce257 LP |
1232 | static bool path_has_prefix(sd_journal *j, const char *path, const char *prefix) { |
1233 | assert(j); | |
1234 | assert(path); | |
1235 | assert(prefix); | |
1236 | ||
1237 | if (j->toplevel_fd >= 0) | |
1238 | return false; | |
1239 | ||
1240 | return path_startswith(path, prefix); | |
1241 | } | |
1242 | ||
9c66f528 LP |
1243 | static void track_file_disposition(sd_journal *j, JournalFile *f) { |
1244 | assert(j); | |
1245 | assert(f); | |
1246 | ||
1247 | if (!j->has_runtime_files && path_has_prefix(j, f->path, "/run")) | |
1248 | j->has_runtime_files = true; | |
1249 | else if (!j->has_persistent_files && path_has_prefix(j, f->path, "/var")) | |
1250 | j->has_persistent_files = true; | |
1251 | } | |
1252 | ||
5d1ce257 LP |
1253 | static const char *skip_slash(const char *p) { |
1254 | ||
1255 | if (!p) | |
1256 | return NULL; | |
1257 | ||
1258 | while (*p == '/') | |
1259 | p++; | |
1260 | ||
1261 | return p; | |
1262 | } | |
1263 | ||
9c66f528 LP |
1264 | static int add_any_file( |
1265 | sd_journal *j, | |
1266 | int fd, | |
1267 | const char *path) { | |
1268 | ||
254d1313 | 1269 | _cleanup_close_ int our_fd = -EBADF; |
9c66f528 LP |
1270 | JournalFile *f; |
1271 | struct stat st; | |
70f50a47 | 1272 | int r; |
3fbf9cbb LP |
1273 | |
1274 | assert(j); | |
5d1ce257 | 1275 | assert(fd >= 0 || path); |
3fbf9cbb | 1276 | |
9c66f528 | 1277 | if (fd < 0) { |
85b0ff8a | 1278 | assert(path); /* For gcc. */ |
9c66f528 LP |
1279 | if (j->toplevel_fd >= 0) |
1280 | /* If there's a top-level fd defined make the path relative, explicitly, since otherwise | |
1281 | * openat() ignores the first argument. */ | |
1282 | ||
70f50a47 | 1283 | fd = our_fd = openat(j->toplevel_fd, skip_slash(path), O_RDONLY|O_CLOEXEC|O_NONBLOCK); |
9c66f528 | 1284 | else |
70f50a47 | 1285 | fd = our_fd = open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK); |
9c66f528 LP |
1286 | if (fd < 0) { |
1287 | r = log_debug_errno(errno, "Failed to open journal file %s: %m", path); | |
70f50a47 | 1288 | goto error; |
9c66f528 LP |
1289 | } |
1290 | ||
9c66f528 LP |
1291 | r = fd_nonblock(fd, false); |
1292 | if (r < 0) { | |
1293 | r = log_debug_errno(errno, "Failed to turn off O_NONBLOCK for %s: %m", path); | |
70f50a47 | 1294 | goto error; |
858749f7 LP |
1295 | } |
1296 | } | |
50f20cfd | 1297 | |
9c66f528 | 1298 | if (fstat(fd, &st) < 0) { |
85b0ff8a | 1299 | r = log_debug_errno(errno, "Failed to fstat %s: %m", path ?: "fd"); |
70f50a47 | 1300 | goto error; |
9c66f528 | 1301 | } |
3cc44114 LP |
1302 | |
1303 | r = stat_verify_regular(&st); | |
1304 | if (r < 0) { | |
85b0ff8a | 1305 | log_debug_errno(r, "Refusing to open %s: %m", path ?: "fd"); |
70f50a47 | 1306 | goto error; |
9e8abdf0 LP |
1307 | } |
1308 | ||
85b0ff8a ZJS |
1309 | if (path) { |
1310 | f = ordered_hashmap_get(j->files, path); | |
1311 | if (f) { | |
1312 | if (stat_inode_same(&f->last_stat, &st)) { | |
1313 | /* We already track this file, under the same path and with the same | |
1314 | * device/inode numbers, it's hence really the same. Mark this file as seen | |
1315 | * in this generation. This is used to GC old files in process_q_overflow() | |
1316 | * to detect journal files that are still there and discern them from those | |
1317 | * which are gone. */ | |
1318 | ||
1319 | f->last_seen_generation = j->generation; | |
70f50a47 | 1320 | return 0; |
85b0ff8a | 1321 | } |
5d1ce257 | 1322 | |
85b0ff8a ZJS |
1323 | /* So we tracked a file under this name, but it has a different inode/device. In that |
1324 | * case, it got replaced (probably due to rotation?), let's drop it hence from our | |
1325 | * list. */ | |
1326 | remove_file_real(j, f); | |
1327 | f = NULL; | |
5d1ce257 | 1328 | } |
9c66f528 LP |
1329 | } |
1330 | ||
1331 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { | |
70f50a47 ZJS |
1332 | r = log_debug_errno(SYNTHETIC_ERRNO(ETOOMANYREFS), |
1333 | "Too many open journal files, not adding %s.", path ?: "fd"); | |
1334 | goto error; | |
5d1ce257 LP |
1335 | } |
1336 | ||
49615dbd | 1337 | r = journal_file_open(fd, path, O_RDONLY, 0, 0, 0, NULL, j->mmap, NULL, &f); |
d617408e | 1338 | if (r < 0) { |
85b0ff8a | 1339 | log_debug_errno(r, "Failed to open journal file %s: %m", path ?: "from fd"); |
70f50a47 | 1340 | goto error; |
d617408e | 1341 | } |
3fbf9cbb | 1342 | |
72f59706 | 1343 | /* journal_file_dump(f); */ |
de190aef | 1344 | |
85b0ff8a | 1345 | /* journal_file_open() generates an replacement fname if necessary, so we can use f->path. */ |
c1f906bd | 1346 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb | 1347 | if (r < 0) { |
85b0ff8a ZJS |
1348 | f->close_fd = false; /* Make sure journal_file_close() doesn't close the caller's fd |
1349 | * (or our own). The caller or we will do that ourselves. */ | |
69a3a6fd | 1350 | (void) journal_file_close(f); |
70f50a47 | 1351 | goto error; |
3fbf9cbb LP |
1352 | } |
1353 | ||
70f50a47 | 1354 | TAKE_FD(our_fd); /* the fd is now owned by the JournalFile object */ |
5d1ce257 | 1355 | |
9c66f528 | 1356 | f->last_seen_generation = j->generation; |
a50d7d43 | 1357 | |
9c66f528 | 1358 | track_file_disposition(j, f); |
85210bff LP |
1359 | check_network(j, f->fd); |
1360 | ||
313cefa1 | 1361 | j->current_invalidate_counter++; |
a963990f | 1362 | |
9c66f528 | 1363 | log_debug("File %s added.", f->path); |
d617408e | 1364 | |
70f50a47 | 1365 | return 0; |
d617408e | 1366 | |
70f50a47 ZJS |
1367 | error: |
1368 | (void) journal_put_error(j, r, path); /* path==NULL is OK. */ | |
d617408e | 1369 | return r; |
50f20cfd LP |
1370 | } |
1371 | ||
fc1813c0 LP |
1372 | static int add_file_by_name( |
1373 | sd_journal *j, | |
1374 | const char *prefix, | |
1375 | const char *filename) { | |
1376 | ||
8e7e4a73 | 1377 | _cleanup_free_ char *path = NULL; |
5302ebe1 ZJS |
1378 | |
1379 | assert(j); | |
1380 | assert(prefix); | |
1381 | assert(filename); | |
1382 | ||
5d1ce257 | 1383 | if (j->no_new_files) |
5302ebe1 ZJS |
1384 | return 0; |
1385 | ||
5d1ce257 LP |
1386 | if (!file_type_wanted(j->flags, filename)) |
1387 | return 0; | |
39fd5b08 | 1388 | |
8e7e4a73 LP |
1389 | path = path_join(prefix, filename); |
1390 | if (!path) | |
1391 | return -ENOMEM; | |
1392 | ||
5d1ce257 | 1393 | return add_any_file(j, -1, path); |
5302ebe1 ZJS |
1394 | } |
1395 | ||
8e7e4a73 | 1396 | static int remove_file_by_name( |
fc1813c0 LP |
1397 | sd_journal *j, |
1398 | const char *prefix, | |
1399 | const char *filename) { | |
1400 | ||
8e7e4a73 | 1401 | _cleanup_free_ char *path = NULL; |
50f20cfd LP |
1402 | JournalFile *f; |
1403 | ||
1404 | assert(j); | |
1405 | assert(prefix); | |
1406 | assert(filename); | |
1407 | ||
8e7e4a73 LP |
1408 | path = path_join(prefix, filename); |
1409 | if (!path) | |
1410 | return -ENOMEM; | |
1411 | ||
c1f906bd | 1412 | f = ordered_hashmap_get(j->files, path); |
50f20cfd | 1413 | if (!f) |
8e7e4a73 | 1414 | return 0; |
50f20cfd | 1415 | |
a9a245c1 | 1416 | remove_file_real(j, f); |
8e7e4a73 | 1417 | return 1; |
a9a245c1 ZJS |
1418 | } |
1419 | ||
1420 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1421 | assert(j); | |
1422 | assert(f); | |
1423 | ||
fc1813c0 | 1424 | (void) ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1425 | |
5ec76417 | 1426 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1427 | |
3c1668da LP |
1428 | if (j->current_file == f) { |
1429 | j->current_file = NULL; | |
1430 | j->current_field = 0; | |
1431 | } | |
1432 | ||
1433 | if (j->unique_file == f) { | |
360af4cf | 1434 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1435 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1436 | j->unique_offset = 0; |
360af4cf ZJS |
1437 | if (!j->unique_file) |
1438 | j->unique_file_lost = true; | |
3c1668da LP |
1439 | } |
1440 | ||
eb86030e LP |
1441 | if (j->fields_file == f) { |
1442 | j->fields_file = ordered_hashmap_next(j->files, j->fields_file->path); | |
1443 | j->fields_offset = 0; | |
1444 | if (!j->fields_file) | |
1445 | j->fields_file_lost = true; | |
1446 | } | |
1447 | ||
69a3a6fd | 1448 | (void) journal_file_close(f); |
50f20cfd | 1449 | |
313cefa1 | 1450 | j->current_invalidate_counter++; |
3fbf9cbb LP |
1451 | } |
1452 | ||
d617408e LP |
1453 | static int dirname_is_machine_id(const char *fn) { |
1454 | sd_id128_t id, machine; | |
456aa879 | 1455 | const char *e; |
d617408e LP |
1456 | int r; |
1457 | ||
456aa879 LP |
1458 | /* Returns true if the specified directory name matches the local machine ID */ |
1459 | ||
d617408e LP |
1460 | r = sd_id128_get_machine(&machine); |
1461 | if (r < 0) | |
1462 | return r; | |
1463 | ||
456aa879 LP |
1464 | e = strchr(fn, '.'); |
1465 | if (e) { | |
1466 | const char *k; | |
1467 | ||
1468 | /* Looks like it has a namespace suffix. Verify that. */ | |
1469 | if (!log_namespace_name_valid(e + 1)) | |
1470 | return false; | |
1471 | ||
2f82562b | 1472 | k = strndupa_safe(fn, e - fn); |
456aa879 LP |
1473 | r = sd_id128_from_string(k, &id); |
1474 | } else | |
1475 | r = sd_id128_from_string(fn, &id); | |
d617408e LP |
1476 | if (r < 0) |
1477 | return r; | |
1478 | ||
1479 | return sd_id128_equal(id, machine); | |
1480 | } | |
1481 | ||
456aa879 LP |
1482 | static int dirname_has_namespace(const char *fn, const char *namespace) { |
1483 | const char *e; | |
1484 | ||
1485 | /* Returns true if the specified directory name matches the specified namespace */ | |
1486 | ||
1487 | e = strchr(fn, '.'); | |
1488 | if (e) { | |
1489 | const char *k; | |
1490 | ||
1491 | if (!namespace) | |
1492 | return false; | |
1493 | ||
1494 | if (!streq(e + 1, namespace)) | |
1495 | return false; | |
1496 | ||
2f82562b | 1497 | k = strndupa_safe(fn, e - fn); |
456aa879 LP |
1498 | return id128_is_valid(k); |
1499 | } | |
1500 | ||
1501 | if (namespace) | |
1502 | return false; | |
1503 | ||
1504 | return id128_is_valid(fn); | |
1505 | } | |
1506 | ||
858749f7 LP |
1507 | static bool dirent_is_journal_file(const struct dirent *de) { |
1508 | assert(de); | |
1509 | ||
456aa879 LP |
1510 | /* Returns true if the specified directory entry looks like a journal file we might be interested in */ |
1511 | ||
858749f7 LP |
1512 | if (!IN_SET(de->d_type, DT_REG, DT_LNK, DT_UNKNOWN)) |
1513 | return false; | |
1514 | ||
1515 | return endswith(de->d_name, ".journal") || | |
1516 | endswith(de->d_name, ".journal~"); | |
1517 | } | |
1518 | ||
456aa879 LP |
1519 | static bool dirent_is_journal_subdir(const struct dirent *de) { |
1520 | const char *e, *n; | |
858749f7 LP |
1521 | assert(de); |
1522 | ||
456aa879 LP |
1523 | /* returns true if the specified directory entry looks like a directory that might contain journal |
1524 | * files we might be interested in, i.e. is either a 128bit ID or a 128bit ID suffixed by a | |
1525 | * namespace. */ | |
1526 | ||
858749f7 LP |
1527 | if (!IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN)) |
1528 | return false; | |
1529 | ||
456aa879 LP |
1530 | e = strchr(de->d_name, '.'); |
1531 | if (!e) | |
1532 | return id128_is_valid(de->d_name); /* No namespace */ | |
1533 | ||
2f82562b | 1534 | n = strndupa_safe(de->d_name, e - de->d_name); |
456aa879 LP |
1535 | if (!id128_is_valid(n)) |
1536 | return false; | |
1537 | ||
1538 | return log_namespace_name_valid(e + 1); | |
858749f7 LP |
1539 | } |
1540 | ||
1541 | static int directory_open(sd_journal *j, const char *path, DIR **ret) { | |
1542 | DIR *d; | |
1543 | ||
1544 | assert(j); | |
1545 | assert(path); | |
1546 | assert(ret); | |
1547 | ||
1548 | if (j->toplevel_fd < 0) | |
1549 | d = opendir(path); | |
1550 | else | |
1551 | /* Open the specified directory relative to the toplevel fd. Enforce that the path specified is | |
1552 | * relative, by dropping the initial slash */ | |
1553 | d = xopendirat(j->toplevel_fd, skip_slash(path), 0); | |
1554 | if (!d) | |
1555 | return -errno; | |
1556 | ||
1557 | *ret = d; | |
1558 | return 0; | |
1559 | } | |
1560 | ||
1561 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname); | |
1562 | ||
1563 | static void directory_enumerate(sd_journal *j, Directory *m, DIR *d) { | |
858749f7 LP |
1564 | assert(j); |
1565 | assert(m); | |
1566 | assert(d); | |
1567 | ||
1568 | FOREACH_DIRENT_ALL(de, d, goto fail) { | |
1569 | if (dirent_is_journal_file(de)) | |
fc1813c0 | 1570 | (void) add_file_by_name(j, m->path, de->d_name); |
858749f7 | 1571 | |
456aa879 | 1572 | if (m->is_root && dirent_is_journal_subdir(de)) |
858749f7 LP |
1573 | (void) add_directory(j, m->path, de->d_name); |
1574 | } | |
1575 | ||
1576 | return; | |
858749f7 LP |
1577 | fail: |
1578 | log_debug_errno(errno, "Failed to enumerate directory %s, ignoring: %m", m->path); | |
1579 | } | |
1580 | ||
1581 | static void directory_watch(sd_journal *j, Directory *m, int fd, uint32_t mask) { | |
1582 | int r; | |
1583 | ||
1584 | assert(j); | |
1585 | assert(m); | |
1586 | assert(fd >= 0); | |
1587 | ||
1588 | /* Watch this directory if that's enabled and if it not being watched yet. */ | |
1589 | ||
1590 | if (m->wd > 0) /* Already have a watch? */ | |
1591 | return; | |
1592 | if (j->inotify_fd < 0) /* Not watching at all? */ | |
1593 | return; | |
1594 | ||
1595 | m->wd = inotify_add_watch_fd(j->inotify_fd, fd, mask); | |
1596 | if (m->wd < 0) { | |
1597 | log_debug_errno(errno, "Failed to watch journal directory '%s', ignoring: %m", m->path); | |
1598 | return; | |
1599 | } | |
1600 | ||
1601 | r = hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m); | |
1602 | if (r == -EEXIST) | |
1603 | log_debug_errno(r, "Directory '%s' already being watched under a different path, ignoring: %m", m->path); | |
1604 | if (r < 0) { | |
1605 | log_debug_errno(r, "Failed to add watch for journal directory '%s' to hashmap, ignoring: %m", m->path); | |
1606 | (void) inotify_rm_watch(j->inotify_fd, m->wd); | |
1607 | m->wd = -1; | |
1608 | } | |
1609 | } | |
1610 | ||
456aa879 LP |
1611 | static int add_directory( |
1612 | sd_journal *j, | |
1613 | const char *prefix, | |
1614 | const char *dirname) { | |
1615 | ||
7fd1b19b | 1616 | _cleanup_free_ char *path = NULL; |
7fd1b19b | 1617 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1618 | Directory *m; |
d617408e | 1619 | int r, k; |
3fbf9cbb LP |
1620 | |
1621 | assert(j); | |
1622 | assert(prefix); | |
3fbf9cbb | 1623 | |
5d1ce257 LP |
1624 | /* Adds a journal file directory to watch. If the directory is already tracked this updates the inotify watch |
1625 | * and reenumerates directory contents */ | |
d95b1fb3 | 1626 | |
657ee2d8 | 1627 | path = path_join(prefix, dirname); |
d617408e LP |
1628 | if (!path) { |
1629 | r = -ENOMEM; | |
1630 | goto fail; | |
1631 | } | |
3fbf9cbb | 1632 | |
858749f7 | 1633 | log_debug("Considering directory '%s'.", path); |
5d1ce257 LP |
1634 | |
1635 | /* We consider everything local that is in a directory for the local machine ID, or that is stored in /run */ | |
1636 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && | |
1637 | !((dirname && dirname_is_machine_id(dirname) > 0) || path_has_prefix(j, path, "/run"))) | |
858749f7 | 1638 | return 0; |
5d1ce257 | 1639 | |
2b6df46d LP |
1640 | if (dirname && |
1641 | (!(FLAGS_SET(j->flags, SD_JOURNAL_ALL_NAMESPACES) || | |
1642 | dirname_has_namespace(dirname, j->namespace) > 0 || | |
1643 | (FLAGS_SET(j->flags, SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE) && dirname_has_namespace(dirname, NULL) > 0)))) | |
456aa879 LP |
1644 | return 0; |
1645 | ||
858749f7 LP |
1646 | r = directory_open(j, path, &d); |
1647 | if (r < 0) { | |
1648 | log_debug_errno(r, "Failed to open directory '%s': %m", path); | |
d617408e | 1649 | goto fail; |
3fbf9cbb LP |
1650 | } |
1651 | ||
a963990f LP |
1652 | m = hashmap_get(j->directories_by_path, path); |
1653 | if (!m) { | |
2f5435a1 | 1654 | m = new(Directory, 1); |
d617408e LP |
1655 | if (!m) { |
1656 | r = -ENOMEM; | |
1657 | goto fail; | |
1658 | } | |
a963990f | 1659 | |
2f5435a1 LP |
1660 | *m = (Directory) { |
1661 | .is_root = false, | |
1662 | .path = path, | |
1663 | }; | |
a963990f LP |
1664 | |
1665 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f | 1666 | free(m); |
d617408e LP |
1667 | r = -ENOMEM; |
1668 | goto fail; | |
a963990f LP |
1669 | } |
1670 | ||
a50d7d43 | 1671 | path = NULL; /* avoid freeing in cleanup */ |
313cefa1 | 1672 | j->current_invalidate_counter++; |
a963990f | 1673 | |
5ec76417 | 1674 | log_debug("Directory %s added.", m->path); |
a963990f | 1675 | |
a50d7d43 | 1676 | } else if (m->is_root) |
858749f7 | 1677 | return 0; /* Don't 'downgrade' from root directory */ |
a963990f | 1678 | |
858749f7 | 1679 | m->last_seen_generation = j->generation; |
a963990f | 1680 | |
858749f7 LP |
1681 | directory_watch(j, m, dirfd(d), |
1682 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1683 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| | |
1684 | IN_ONLYDIR); | |
a963990f | 1685 | |
858749f7 LP |
1686 | if (!j->no_new_files) |
1687 | directory_enumerate(j, m, d); | |
a963990f | 1688 | |
85210bff LP |
1689 | check_network(j, dirfd(d)); |
1690 | ||
a963990f | 1691 | return 0; |
d617408e LP |
1692 | |
1693 | fail: | |
5d1ce257 | 1694 | k = journal_put_error(j, r, path ?: prefix); |
d617408e LP |
1695 | if (k < 0) |
1696 | return k; | |
1697 | ||
1698 | return r; | |
a963990f LP |
1699 | } |
1700 | ||
d617408e | 1701 | static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) { |
5d1ce257 | 1702 | |
7fd1b19b | 1703 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1704 | Directory *m; |
d617408e | 1705 | int r, k; |
a963990f LP |
1706 | |
1707 | assert(j); | |
a963990f | 1708 | |
5d1ce257 LP |
1709 | /* Adds a root directory to our set of directories to use. If the root directory is already in the set, we |
1710 | * update the inotify logic, and renumerate the directory entries. This call may hence be called to initially | |
1711 | * populate the set, as well as to update it later. */ | |
a963990f | 1712 | |
5d1ce257 LP |
1713 | if (p) { |
1714 | /* If there's a path specified, use it. */ | |
b6741478 | 1715 | |
858749f7 LP |
1716 | log_debug("Considering root directory '%s'.", p); |
1717 | ||
5d1ce257 LP |
1718 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && |
1719 | !path_has_prefix(j, p, "/run")) | |
1720 | return -EINVAL; | |
d617408e | 1721 | |
5d1ce257 LP |
1722 | if (j->prefix) |
1723 | p = strjoina(j->prefix, p); | |
1724 | ||
858749f7 LP |
1725 | r = directory_open(j, p, &d); |
1726 | if (r == -ENOENT && missing_ok) | |
1727 | return 0; | |
1728 | if (r < 0) { | |
1729 | log_debug_errno(r, "Failed to open root directory %s: %m", p); | |
5d1ce257 LP |
1730 | goto fail; |
1731 | } | |
1732 | } else { | |
254d1313 | 1733 | _cleanup_close_ int dfd = -EBADF; |
5d1ce257 LP |
1734 | |
1735 | /* If there's no path specified, then we use the top-level fd itself. We duplicate the fd here, since | |
1736 | * opendir() will take possession of the fd, and close it, which we don't want. */ | |
1737 | ||
1738 | p = "."; /* store this as "." in the directories hashmap */ | |
1739 | ||
1740 | dfd = fcntl(j->toplevel_fd, F_DUPFD_CLOEXEC, 3); | |
1741 | if (dfd < 0) { | |
1742 | r = -errno; | |
1743 | goto fail; | |
1744 | } | |
1745 | ||
8e06af80 | 1746 | d = take_fdopendir(&dfd); |
5d1ce257 LP |
1747 | if (!d) { |
1748 | r = -errno; | |
5d1ce257 LP |
1749 | goto fail; |
1750 | } | |
1751 | ||
1752 | rewinddir(d); | |
d617408e | 1753 | } |
a963990f LP |
1754 | |
1755 | m = hashmap_get(j->directories_by_path, p); | |
1756 | if (!m) { | |
1757 | m = new0(Directory, 1); | |
d617408e LP |
1758 | if (!m) { |
1759 | r = -ENOMEM; | |
1760 | goto fail; | |
1761 | } | |
a963990f LP |
1762 | |
1763 | m->is_root = true; | |
5d1ce257 | 1764 | |
a963990f LP |
1765 | m->path = strdup(p); |
1766 | if (!m->path) { | |
a963990f | 1767 | free(m); |
d617408e LP |
1768 | r = -ENOMEM; |
1769 | goto fail; | |
a963990f LP |
1770 | } |
1771 | ||
1772 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1773 | free(m->path); |
1774 | free(m); | |
d617408e LP |
1775 | r = -ENOMEM; |
1776 | goto fail; | |
a963990f LP |
1777 | } |
1778 | ||
313cefa1 | 1779 | j->current_invalidate_counter++; |
a963990f | 1780 | |
5ec76417 | 1781 | log_debug("Root directory %s added.", m->path); |
a963990f | 1782 | |
a50d7d43 | 1783 | } else if (!m->is_root) |
a963990f | 1784 | return 0; |
50f20cfd | 1785 | |
858749f7 LP |
1786 | directory_watch(j, m, dirfd(d), |
1787 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1788 | IN_ONLYDIR); | |
a963990f | 1789 | |
858749f7 LP |
1790 | if (!j->no_new_files) |
1791 | directory_enumerate(j, m, d); | |
3fbf9cbb | 1792 | |
85210bff LP |
1793 | check_network(j, dirfd(d)); |
1794 | ||
a963990f | 1795 | return 0; |
d617408e LP |
1796 | |
1797 | fail: | |
5768d259 | 1798 | k = journal_put_error(j, r, p); |
d617408e LP |
1799 | if (k < 0) |
1800 | return k; | |
1801 | ||
1802 | return r; | |
a963990f LP |
1803 | } |
1804 | ||
b2b46f91 | 1805 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1806 | assert(j); |
1807 | ||
1808 | if (d->wd > 0) { | |
1809 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1810 | ||
1811 | if (j->inotify_fd >= 0) | |
98d4a4df | 1812 | (void) inotify_rm_watch(j->inotify_fd, d->wd); |
a963990f LP |
1813 | } |
1814 | ||
1815 | hashmap_remove(j->directories_by_path, d->path); | |
1816 | ||
1817 | if (d->is_root) | |
5ec76417 | 1818 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1819 | else |
5ec76417 | 1820 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1821 | |
1822 | free(d->path); | |
1823 | free(d); | |
3fbf9cbb LP |
1824 | } |
1825 | ||
89739579 | 1826 | static int add_search_paths(sd_journal *j) { |
d617408e LP |
1827 | |
1828 | static const char search_paths[] = | |
a963990f LP |
1829 | "/run/log/journal\0" |
1830 | "/var/log/journal\0"; | |
50f20cfd LP |
1831 | |
1832 | assert(j); | |
50f20cfd | 1833 | |
a963990f LP |
1834 | /* We ignore most errors here, since the idea is to only open |
1835 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1836 | |
d617408e LP |
1837 | NULSTR_FOREACH(p, search_paths) |
1838 | (void) add_root_directory(j, p, true); | |
50f20cfd | 1839 | |
574b77ef MB |
1840 | if (!(j->flags & SD_JOURNAL_LOCAL_ONLY)) |
1841 | (void) add_root_directory(j, "/var/log/journal/remote", true); | |
1842 | ||
a963990f | 1843 | return 0; |
50f20cfd LP |
1844 | } |
1845 | ||
5302ebe1 | 1846 | static int add_current_paths(sd_journal *j) { |
5302ebe1 ZJS |
1847 | JournalFile *f; |
1848 | ||
1849 | assert(j); | |
1850 | assert(j->no_new_files); | |
1851 | ||
5d1ce257 | 1852 | /* Simply adds all directories for files we have open as directories. We don't expect errors here, so we |
5302ebe1 ZJS |
1853 | * treat them as fatal. */ |
1854 | ||
90e74a66 | 1855 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
c2b2df60 | 1856 | _cleanup_free_ char *dir = NULL; |
e9174f29 | 1857 | int r; |
5302ebe1 | 1858 | |
45519d13 LP |
1859 | r = path_extract_directory(f->path, &dir); |
1860 | if (r < 0) | |
1861 | return r; | |
5302ebe1 | 1862 | |
5d1ce257 | 1863 | r = add_directory(j, dir, NULL); |
d617408e | 1864 | if (r < 0) |
5302ebe1 | 1865 | return r; |
5302ebe1 ZJS |
1866 | } |
1867 | ||
1868 | return 0; | |
1869 | } | |
1870 | ||
a963990f | 1871 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1872 | assert(j); |
50f20cfd | 1873 | |
a963990f LP |
1874 | if (j->inotify_fd < 0) { |
1875 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1876 | if (j->inotify_fd < 0) | |
1877 | return -errno; | |
1878 | } | |
50f20cfd | 1879 | |
cb306f5d | 1880 | return hashmap_ensure_allocated(&j->directories_by_wd, NULL); |
50f20cfd LP |
1881 | } |
1882 | ||
456aa879 | 1883 | static sd_journal *journal_new(int flags, const char *path, const char *namespace) { |
17c9aff8 | 1884 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
50f20cfd | 1885 | |
a963990f LP |
1886 | j = new0(sd_journal, 1); |
1887 | if (!j) | |
1888 | return NULL; | |
50f20cfd | 1889 | |
df0ff127 | 1890 | j->original_pid = getpid_cached(); |
254d1313 ZJS |
1891 | j->toplevel_fd = -EBADF; |
1892 | j->inotify_fd = -EBADF; | |
a963990f | 1893 | j->flags = flags; |
93b73b06 | 1894 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1895 | |
7827b1a1 | 1896 | if (path) { |
16fefe90 ZJS |
1897 | char *t; |
1898 | ||
1899 | t = strdup(path); | |
1900 | if (!t) | |
17c9aff8 | 1901 | return NULL; |
16fefe90 ZJS |
1902 | |
1903 | if (flags & SD_JOURNAL_OS_ROOT) | |
1904 | j->prefix = t; | |
1905 | else | |
1906 | j->path = t; | |
7827b1a1 LP |
1907 | } |
1908 | ||
456aa879 LP |
1909 | if (namespace) { |
1910 | j->namespace = strdup(namespace); | |
1911 | if (!j->namespace) | |
1912 | return NULL; | |
1913 | } | |
1914 | ||
548f6937 | 1915 | j->files = ordered_hashmap_new(&path_hash_ops); |
5d4ba7f2 | 1916 | if (!j->files) |
17c9aff8 | 1917 | return NULL; |
5d4ba7f2 VC |
1918 | |
1919 | j->files_cache = ordered_hashmap_iterated_cache_new(j->files); | |
548f6937 | 1920 | j->directories_by_path = hashmap_new(&path_hash_ops); |
84168d80 | 1921 | j->mmap = mmap_cache_new(); |
5d4ba7f2 | 1922 | if (!j->files_cache || !j->directories_by_path || !j->mmap) |
17c9aff8 | 1923 | return NULL; |
6180fc61 | 1924 | |
17c9aff8 | 1925 | return TAKE_PTR(j); |
50f20cfd LP |
1926 | } |
1927 | ||
1aaa68f5 ZJS |
1928 | #define OPEN_ALLOWED_FLAGS \ |
1929 | (SD_JOURNAL_LOCAL_ONLY | \ | |
1930 | SD_JOURNAL_RUNTIME_ONLY | \ | |
456aa879 LP |
1931 | SD_JOURNAL_SYSTEM | \ |
1932 | SD_JOURNAL_CURRENT_USER | \ | |
1933 | SD_JOURNAL_ALL_NAMESPACES | \ | |
1934 | SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE) | |
1aaa68f5 | 1935 | |
456aa879 | 1936 | _public_ int sd_journal_open_namespace(sd_journal **ret, const char *namespace, int flags) { |
17c9aff8 | 1937 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
3fbf9cbb | 1938 | int r; |
87d2c1ff | 1939 | |
1ae464e0 | 1940 | assert_return(ret, -EINVAL); |
1aaa68f5 | 1941 | assert_return((flags & ~OPEN_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 1942 | |
456aa879 | 1943 | j = journal_new(flags, NULL, namespace); |
87d2c1ff LP |
1944 | if (!j) |
1945 | return -ENOMEM; | |
1946 | ||
89739579 | 1947 | r = add_search_paths(j); |
a963990f | 1948 | if (r < 0) |
17c9aff8 | 1949 | return r; |
50f20cfd | 1950 | |
17c9aff8 | 1951 | *ret = TAKE_PTR(j); |
a963990f | 1952 | return 0; |
a963990f | 1953 | } |
50f20cfd | 1954 | |
456aa879 LP |
1955 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
1956 | return sd_journal_open_namespace(ret, NULL, flags); | |
1957 | } | |
1958 | ||
1aaa68f5 ZJS |
1959 | #define OPEN_CONTAINER_ALLOWED_FLAGS \ |
1960 | (SD_JOURNAL_LOCAL_ONLY | SD_JOURNAL_SYSTEM) | |
1961 | ||
b6741478 LP |
1962 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1963 | _cleanup_free_ char *root = NULL, *class = NULL; | |
17c9aff8 | 1964 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
b6741478 LP |
1965 | char *p; |
1966 | int r; | |
1967 | ||
68312977 | 1968 | /* This is deprecated, people should use machined's OpenMachineRootDirectory() call instead in |
2daa9cbd LP |
1969 | * combination with sd_journal_open_directory_fd(). */ |
1970 | ||
b6741478 LP |
1971 | assert_return(machine, -EINVAL); |
1972 | assert_return(ret, -EINVAL); | |
1aaa68f5 | 1973 | assert_return((flags & ~OPEN_CONTAINER_ALLOWED_FLAGS) == 0, -EINVAL); |
52ef5dd7 | 1974 | assert_return(hostname_is_valid(machine, 0), -EINVAL); |
b6741478 | 1975 | |
63c372cb | 1976 | p = strjoina("/run/systemd/machines/", machine); |
13df9c39 LP |
1977 | r = parse_env_file(NULL, p, |
1978 | "ROOT", &root, | |
1979 | "CLASS", &class); | |
b6741478 LP |
1980 | if (r == -ENOENT) |
1981 | return -EHOSTDOWN; | |
1982 | if (r < 0) | |
1983 | return r; | |
1984 | if (!root) | |
1985 | return -ENODATA; | |
1986 | ||
1987 | if (!streq_ptr(class, "container")) | |
1988 | return -EIO; | |
1989 | ||
456aa879 | 1990 | j = journal_new(flags, root, NULL); |
b6741478 LP |
1991 | if (!j) |
1992 | return -ENOMEM; | |
1993 | ||
89739579 | 1994 | r = add_search_paths(j); |
b6741478 | 1995 | if (r < 0) |
17c9aff8 | 1996 | return r; |
b6741478 | 1997 | |
17c9aff8 | 1998 | *ret = TAKE_PTR(j); |
b6741478 | 1999 | return 0; |
b6741478 LP |
2000 | } |
2001 | ||
1aaa68f5 | 2002 | #define OPEN_DIRECTORY_ALLOWED_FLAGS \ |
10752e82 ZJS |
2003 | (SD_JOURNAL_OS_ROOT | \ |
2004 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 2005 | |
a963990f | 2006 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
17c9aff8 | 2007 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
a963990f | 2008 | int r; |
87d2c1ff | 2009 | |
1ae464e0 TA |
2010 | assert_return(ret, -EINVAL); |
2011 | assert_return(path, -EINVAL); | |
1aaa68f5 | 2012 | assert_return((flags & ~OPEN_DIRECTORY_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 2013 | |
456aa879 | 2014 | j = journal_new(flags, path, NULL); |
a963990f LP |
2015 | if (!j) |
2016 | return -ENOMEM; | |
3fbf9cbb | 2017 | |
d077390c LP |
2018 | if (flags & SD_JOURNAL_OS_ROOT) |
2019 | r = add_search_paths(j); | |
2020 | else | |
2021 | r = add_root_directory(j, path, false); | |
d617408e | 2022 | if (r < 0) |
17c9aff8 | 2023 | return r; |
87d2c1ff | 2024 | |
17c9aff8 | 2025 | *ret = TAKE_PTR(j); |
87d2c1ff | 2026 | return 0; |
a963990f | 2027 | } |
87d2c1ff | 2028 | |
5302ebe1 | 2029 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
17c9aff8 | 2030 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5302ebe1 ZJS |
2031 | int r; |
2032 | ||
1ae464e0 TA |
2033 | assert_return(ret, -EINVAL); |
2034 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 | 2035 | |
456aa879 | 2036 | j = journal_new(flags, NULL, NULL); |
5302ebe1 ZJS |
2037 | if (!j) |
2038 | return -ENOMEM; | |
2039 | ||
2040 | STRV_FOREACH(path, paths) { | |
5d1ce257 | 2041 | r = add_any_file(j, -1, *path); |
d617408e | 2042 | if (r < 0) |
17c9aff8 | 2043 | return r; |
5302ebe1 ZJS |
2044 | } |
2045 | ||
2046 | j->no_new_files = true; | |
2047 | ||
17c9aff8 | 2048 | *ret = TAKE_PTR(j); |
5302ebe1 | 2049 | return 0; |
5d1ce257 LP |
2050 | } |
2051 | ||
1aaa68f5 | 2052 | #define OPEN_DIRECTORY_FD_ALLOWED_FLAGS \ |
10752e82 ZJS |
2053 | (SD_JOURNAL_OS_ROOT | \ |
2054 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 2055 | |
5d1ce257 | 2056 | _public_ int sd_journal_open_directory_fd(sd_journal **ret, int fd, int flags) { |
17c9aff8 | 2057 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5d1ce257 LP |
2058 | struct stat st; |
2059 | int r; | |
2060 | ||
2061 | assert_return(ret, -EINVAL); | |
2062 | assert_return(fd >= 0, -EBADF); | |
1aaa68f5 | 2063 | assert_return((flags & ~OPEN_DIRECTORY_FD_ALLOWED_FLAGS) == 0, -EINVAL); |
5d1ce257 LP |
2064 | |
2065 | if (fstat(fd, &st) < 0) | |
2066 | return -errno; | |
2067 | ||
2068 | if (!S_ISDIR(st.st_mode)) | |
2069 | return -EBADFD; | |
2070 | ||
456aa879 | 2071 | j = journal_new(flags, NULL, NULL); |
5d1ce257 LP |
2072 | if (!j) |
2073 | return -ENOMEM; | |
2074 | ||
2075 | j->toplevel_fd = fd; | |
2076 | ||
d077390c LP |
2077 | if (flags & SD_JOURNAL_OS_ROOT) |
2078 | r = add_search_paths(j); | |
2079 | else | |
2080 | r = add_root_directory(j, NULL, false); | |
5d1ce257 | 2081 | if (r < 0) |
17c9aff8 | 2082 | return r; |
5d1ce257 | 2083 | |
17c9aff8 | 2084 | *ret = TAKE_PTR(j); |
5d1ce257 | 2085 | return 0; |
5d1ce257 LP |
2086 | } |
2087 | ||
2088 | _public_ int sd_journal_open_files_fd(sd_journal **ret, int fds[], unsigned n_fds, int flags) { | |
5d1ce257 | 2089 | JournalFile *f; |
17c9aff8 | 2090 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5d1ce257 LP |
2091 | int r; |
2092 | ||
2093 | assert_return(ret, -EINVAL); | |
2094 | assert_return(n_fds > 0, -EBADF); | |
2095 | assert_return(flags == 0, -EINVAL); | |
2096 | ||
456aa879 | 2097 | j = journal_new(flags, NULL, NULL); |
5d1ce257 LP |
2098 | if (!j) |
2099 | return -ENOMEM; | |
2100 | ||
abcdc02c | 2101 | for (unsigned i = 0; i < n_fds; i++) { |
5d1ce257 LP |
2102 | struct stat st; |
2103 | ||
2104 | if (fds[i] < 0) { | |
2105 | r = -EBADF; | |
2106 | goto fail; | |
2107 | } | |
2108 | ||
2109 | if (fstat(fds[i], &st) < 0) { | |
2110 | r = -errno; | |
2111 | goto fail; | |
2112 | } | |
2113 | ||
3cc44114 LP |
2114 | r = stat_verify_regular(&st); |
2115 | if (r < 0) | |
5d1ce257 | 2116 | goto fail; |
5d1ce257 LP |
2117 | |
2118 | r = add_any_file(j, fds[i], NULL); | |
2119 | if (r < 0) | |
2120 | goto fail; | |
2121 | } | |
2122 | ||
2123 | j->no_new_files = true; | |
2124 | j->no_inotify = true; | |
5302ebe1 | 2125 | |
17c9aff8 | 2126 | *ret = TAKE_PTR(j); |
5d1ce257 LP |
2127 | return 0; |
2128 | ||
2129 | fail: | |
f8e2f4d6 | 2130 | /* If we fail, make sure we don't take possession of the files we managed to make use of successfully, and they |
5d1ce257 | 2131 | * remain open */ |
90e74a66 | 2132 | ORDERED_HASHMAP_FOREACH(f, j->files) |
5d1ce257 LP |
2133 | f->close_fd = false; |
2134 | ||
5302ebe1 ZJS |
2135 | return r; |
2136 | } | |
2137 | ||
a5344d2c | 2138 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f | 2139 | Directory *d; |
a963990f | 2140 | |
a5344d2c LP |
2141 | if (!j) |
2142 | return; | |
87d2c1ff | 2143 | |
54b1da83 LP |
2144 | sd_journal_flush_matches(j); |
2145 | ||
f9168190 | 2146 | ordered_hashmap_free_with_destructor(j->files, journal_file_close); |
5d4ba7f2 | 2147 | iterated_cache_free(j->files_cache); |
260a2be4 | 2148 | |
a963990f LP |
2149 | while ((d = hashmap_first(j->directories_by_path))) |
2150 | remove_directory(j, d); | |
260a2be4 | 2151 | |
a963990f LP |
2152 | while ((d = hashmap_first(j->directories_by_wd))) |
2153 | remove_directory(j, d); | |
87d2c1ff | 2154 | |
a963990f LP |
2155 | hashmap_free(j->directories_by_path); |
2156 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 2157 | |
03e334a1 | 2158 | safe_close(j->inotify_fd); |
50f20cfd | 2159 | |
bf807d4d | 2160 | if (j->mmap) { |
3a595c59 | 2161 | mmap_cache_stats_log_debug(j->mmap); |
16e9f408 | 2162 | mmap_cache_unref(j->mmap); |
bf807d4d | 2163 | } |
16e9f408 | 2164 | |
ec1d2909 | 2165 | hashmap_free_free(j->errors); |
5768d259 | 2166 | |
7827b1a1 | 2167 | free(j->path); |
89739579 | 2168 | free(j->prefix); |
456aa879 | 2169 | free(j->namespace); |
3c1668da | 2170 | free(j->unique_field); |
eb86030e | 2171 | free(j->fields_buffer); |
87d2c1ff LP |
2172 | free(j); |
2173 | } | |
3fbf9cbb | 2174 | |
a5344d2c | 2175 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
2176 | Object *o; |
2177 | JournalFile *f; | |
2178 | int r; | |
2179 | ||
1ae464e0 TA |
2180 | assert_return(j, -EINVAL); |
2181 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2182 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
2183 | |
2184 | f = j->current_file; | |
2185 | if (!f) | |
de190aef | 2186 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2187 | |
2188 | if (f->current_offset <= 0) | |
de190aef | 2189 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2190 | |
de190aef | 2191 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2192 | if (r < 0) |
2193 | return r; | |
2194 | ||
2195 | *ret = le64toh(o->entry.realtime); | |
de190aef | 2196 | return 0; |
3fbf9cbb LP |
2197 | } |
2198 | ||
a5344d2c | 2199 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
2200 | Object *o; |
2201 | JournalFile *f; | |
2202 | int r; | |
3fbf9cbb | 2203 | |
1ae464e0 TA |
2204 | assert_return(j, -EINVAL); |
2205 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
2206 | |
2207 | f = j->current_file; | |
2208 | if (!f) | |
de190aef | 2209 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2210 | |
2211 | if (f->current_offset <= 0) | |
de190aef | 2212 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2213 | |
de190aef | 2214 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2215 | if (r < 0) |
2216 | return r; | |
2217 | ||
de190aef LP |
2218 | if (ret_boot_id) |
2219 | *ret_boot_id = o->entry.boot_id; | |
2220 | else { | |
d4739bc4 VC |
2221 | sd_id128_t id; |
2222 | ||
de190aef LP |
2223 | r = sd_id128_get_boot(&id); |
2224 | if (r < 0) | |
2225 | return r; | |
3fbf9cbb | 2226 | |
de190aef | 2227 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 2228 | return -ESTALE; |
de190aef | 2229 | } |
3fbf9cbb | 2230 | |
14a65d65 LP |
2231 | if (ret) |
2232 | *ret = le64toh(o->entry.monotonic); | |
2233 | ||
de190aef | 2234 | return 0; |
3fbf9cbb LP |
2235 | } |
2236 | ||
362a3f81 | 2237 | static bool field_is_valid(const char *field) { |
362a3f81 LP |
2238 | assert(field); |
2239 | ||
2240 | if (isempty(field)) | |
2241 | return false; | |
2242 | ||
2243 | if (startswith(field, "__")) | |
2244 | return false; | |
2245 | ||
abcdc02c | 2246 | for (const char *p = field; *p; p++) { |
362a3f81 LP |
2247 | |
2248 | if (*p == '_') | |
2249 | continue; | |
2250 | ||
2251 | if (*p >= 'A' && *p <= 'Z') | |
2252 | continue; | |
2253 | ||
ff25d338 | 2254 | if (ascii_isdigit(*p)) |
362a3f81 LP |
2255 | continue; |
2256 | ||
2257 | return false; | |
2258 | } | |
2259 | ||
2260 | return true; | |
2261 | } | |
2262 | ||
a5344d2c | 2263 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb | 2264 | JournalFile *f; |
3fbf9cbb | 2265 | size_t field_length; |
3fbf9cbb | 2266 | Object *o; |
a1640191 | 2267 | int r; |
3fbf9cbb | 2268 | |
1ae464e0 TA |
2269 | assert_return(j, -EINVAL); |
2270 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2271 | assert_return(field, -EINVAL); | |
2272 | assert_return(data, -EINVAL); | |
2273 | assert_return(size, -EINVAL); | |
2274 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
2275 | |
2276 | f = j->current_file; | |
2277 | if (!f) | |
de190aef | 2278 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2279 | |
2280 | if (f->current_offset <= 0) | |
de190aef | 2281 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2282 | |
de190aef | 2283 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2284 | if (r < 0) |
2285 | return r; | |
2286 | ||
2287 | field_length = strlen(field); | |
2288 | ||
a9089a66 | 2289 | uint64_t n = journal_file_entry_n_items(f, o); |
abcdc02c | 2290 | for (uint64_t i = 0; i < n; i++) { |
0e35afff DDM |
2291 | uint64_t p; |
2292 | void *d; | |
2293 | size_t l; | |
3fbf9cbb | 2294 | |
a9089a66 | 2295 | p = journal_file_entry_item_object_offset(f, o, i); |
0e35afff DDM |
2296 | r = journal_file_data_payload(f, NULL, p, field, field_length, j->data_threshold, &d, &l); |
2297 | if (r == 0) | |
a1640191 | 2298 | goto next; |
df207ccb DDM |
2299 | if (IN_SET(r, -EADDRNOTAVAIL, -EBADMSG)) { |
2300 | log_debug_errno(r, "Entry item %"PRIu64" data object is bad, skipping over it: %m", i); | |
a1640191 | 2301 | goto next; |
8a799bed | 2302 | } |
3fbf9cbb LP |
2303 | if (r < 0) |
2304 | return r; | |
2305 | ||
0e35afff DDM |
2306 | *data = d; |
2307 | *size = l; | |
3fbf9cbb | 2308 | |
0e35afff | 2309 | return 0; |
a1640191 YW |
2310 | |
2311 | next: | |
2312 | /* journal_file_data_payload() may clear or overwrite cached object. */ | |
2313 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); | |
2314 | if (r < 0) | |
2315 | return r; | |
3fbf9cbb LP |
2316 | } |
2317 | ||
de190aef | 2318 | return -ENOENT; |
3fbf9cbb LP |
2319 | } |
2320 | ||
a5344d2c | 2321 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2322 | JournalFile *f; |
3fbf9cbb | 2323 | Object *o; |
5a94a2bf | 2324 | int r; |
3fbf9cbb | 2325 | |
1ae464e0 TA |
2326 | assert_return(j, -EINVAL); |
2327 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2328 | assert_return(data, -EINVAL); | |
2329 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2330 | |
2331 | f = j->current_file; | |
2332 | if (!f) | |
de190aef | 2333 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2334 | |
2335 | if (f->current_offset <= 0) | |
de190aef | 2336 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2337 | |
de190aef | 2338 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2339 | if (r < 0) |
2340 | return r; | |
2341 | ||
a9089a66 | 2342 | for (uint64_t n = journal_file_entry_n_items(f, o); j->current_field < n; j->current_field++) { |
5a94a2bf | 2343 | uint64_t p; |
0e35afff DDM |
2344 | void *d; |
2345 | size_t l; | |
3fbf9cbb | 2346 | |
a9089a66 | 2347 | p = journal_file_entry_item_object_offset(f, o, j->current_field); |
0e35afff | 2348 | r = journal_file_data_payload(f, NULL, p, NULL, 0, j->data_threshold, &d, &l); |
df207ccb DDM |
2349 | if (IN_SET(r, -EADDRNOTAVAIL, -EBADMSG)) { |
2350 | log_debug_errno(r, "Entry item %"PRIu64" data object is bad, skipping over it: %m", j->current_field); | |
a1640191 | 2351 | goto next; |
5a94a2bf DDM |
2352 | } |
2353 | if (r < 0) | |
2354 | return r; | |
0e35afff | 2355 | assert(r > 0); |
3fbf9cbb | 2356 | |
0e35afff DDM |
2357 | *data = d; |
2358 | *size = l; | |
3fbf9cbb | 2359 | |
5a94a2bf | 2360 | j->current_field++; |
3fbf9cbb | 2361 | |
5a94a2bf | 2362 | return 1; |
a1640191 YW |
2363 | |
2364 | next: | |
2365 | /* journal_file_data_payload() may clear or overwrite cached object. */ | |
2366 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); | |
2367 | if (r < 0) | |
2368 | return r; | |
5a94a2bf DDM |
2369 | } |
2370 | ||
2371 | return 0; | |
3fbf9cbb | 2372 | } |
c2373f84 | 2373 | |
76cbafcd ZJS |
2374 | _public_ int sd_journal_enumerate_available_data(sd_journal *j, const void **data, size_t *size) { |
2375 | for (;;) { | |
2376 | int r; | |
2377 | ||
2378 | r = sd_journal_enumerate_data(j, data, size); | |
2379 | if (r >= 0) | |
2380 | return r; | |
2381 | if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r)) | |
2382 | return r; | |
2383 | j->current_field++; /* Try with the next field */ | |
2384 | } | |
2385 | } | |
2386 | ||
a5344d2c LP |
2387 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2388 | if (!j) | |
2389 | return; | |
8725d60a LP |
2390 | |
2391 | j->current_field = 0; | |
c2373f84 | 2392 | } |
50f20cfd | 2393 | |
858749f7 LP |
2394 | static int reiterate_all_paths(sd_journal *j) { |
2395 | assert(j); | |
2396 | ||
2397 | if (j->no_new_files) | |
2398 | return add_current_paths(j); | |
2399 | ||
2400 | if (j->flags & SD_JOURNAL_OS_ROOT) | |
2401 | return add_search_paths(j); | |
2402 | ||
2403 | if (j->toplevel_fd >= 0) | |
2404 | return add_root_directory(j, NULL, false); | |
2405 | ||
2406 | if (j->path) | |
2407 | return add_root_directory(j, j->path, true); | |
2408 | ||
2409 | return add_search_paths(j); | |
2410 | } | |
2411 | ||
a5344d2c | 2412 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2413 | int r; |
2414 | ||
1ae464e0 TA |
2415 | assert_return(j, -EINVAL); |
2416 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2417 | |
5d1ce257 LP |
2418 | if (j->no_inotify) |
2419 | return -EMEDIUMTYPE; | |
2420 | ||
a963990f LP |
2421 | if (j->inotify_fd >= 0) |
2422 | return j->inotify_fd; | |
2423 | ||
2424 | r = allocate_inotify(j); | |
2425 | if (r < 0) | |
2426 | return r; | |
2427 | ||
858749f7 | 2428 | log_debug("Reiterating files to get inotify watches established."); |
5d1ce257 | 2429 | |
858749f7 LP |
2430 | /* Iterate through all dirs again, to add them to the inotify */ |
2431 | r = reiterate_all_paths(j); | |
a963990f LP |
2432 | if (r < 0) |
2433 | return r; | |
2434 | ||
50f20cfd LP |
2435 | return j->inotify_fd; |
2436 | } | |
2437 | ||
ee531d94 LP |
2438 | _public_ int sd_journal_get_events(sd_journal *j) { |
2439 | int fd; | |
2440 | ||
1ae464e0 TA |
2441 | assert_return(j, -EINVAL); |
2442 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2443 | |
2444 | fd = sd_journal_get_fd(j); | |
2445 | if (fd < 0) | |
2446 | return fd; | |
2447 | ||
2448 | return POLLIN; | |
2449 | } | |
2450 | ||
39c155ea LP |
2451 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2452 | int fd; | |
2453 | ||
1ae464e0 TA |
2454 | assert_return(j, -EINVAL); |
2455 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2456 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2457 | |
2458 | fd = sd_journal_get_fd(j); | |
2459 | if (fd < 0) | |
2460 | return fd; | |
2461 | ||
2462 | if (!j->on_network) { | |
f5fbe71d | 2463 | *timeout_usec = UINT64_MAX; |
39c155ea LP |
2464 | return 0; |
2465 | } | |
2466 | ||
2467 | /* If we are on the network we need to regularly check for | |
2468 | * changes manually */ | |
2469 | ||
2470 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2471 | return 1; | |
2472 | } | |
2473 | ||
858749f7 LP |
2474 | static void process_q_overflow(sd_journal *j) { |
2475 | JournalFile *f; | |
2476 | Directory *m; | |
858749f7 LP |
2477 | |
2478 | assert(j); | |
2479 | ||
2480 | /* When the inotify queue overruns we need to enumerate and re-validate all journal files to bring our list | |
2481 | * back in sync with what's on disk. For this we pick a new generation counter value. It'll be assigned to all | |
2482 | * journal files we encounter. All journal files and all directories that don't carry it after reenumeration | |
2483 | * are subject for unloading. */ | |
2484 | ||
2485 | log_debug("Inotify queue overrun, reiterating everything."); | |
2486 | ||
2487 | j->generation++; | |
2488 | (void) reiterate_all_paths(j); | |
2489 | ||
90e74a66 | 2490 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
858749f7 LP |
2491 | |
2492 | if (f->last_seen_generation == j->generation) | |
2493 | continue; | |
2494 | ||
2495 | log_debug("File '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2496 | remove_file_real(j, f); | |
2497 | } | |
2498 | ||
90e74a66 | 2499 | HASHMAP_FOREACH(m, j->directories_by_path) { |
858749f7 LP |
2500 | |
2501 | if (m->last_seen_generation == j->generation) | |
2502 | continue; | |
2503 | ||
2504 | if (m->is_root) /* Never GC root directories */ | |
2505 | continue; | |
2506 | ||
2507 | log_debug("Directory '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2508 | remove_directory(j, m); | |
2509 | } | |
2510 | ||
2511 | log_debug("Reiteration complete."); | |
2512 | } | |
2513 | ||
31e99dd2 | 2514 | static void process_inotify_event(sd_journal *j, const struct inotify_event *e) { |
a963990f | 2515 | Directory *d; |
50f20cfd LP |
2516 | |
2517 | assert(j); | |
2518 | assert(e); | |
2519 | ||
858749f7 LP |
2520 | if (e->mask & IN_Q_OVERFLOW) { |
2521 | process_q_overflow(j); | |
2522 | return; | |
2523 | } | |
2524 | ||
50f20cfd | 2525 | /* Is this a subdirectory we watch? */ |
a963990f LP |
2526 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2527 | if (d) { | |
de2c3907 LP |
2528 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2529 | (endswith(e->name, ".journal") || | |
2530 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2531 | |
2532 | /* Event for a journal file */ | |
2533 | ||
d617408e | 2534 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
fc1813c0 | 2535 | (void) add_file_by_name(j, d->path, e->name); |
d617408e | 2536 | else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) |
8e7e4a73 | 2537 | (void) remove_file_by_name(j, d->path, e->name); |
50f20cfd | 2538 | |
a963990f | 2539 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2540 | |
a963990f | 2541 | /* Event for a subdirectory */ |
50f20cfd | 2542 | |
b2b46f91 TA |
2543 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2544 | remove_directory(j, d); | |
50f20cfd | 2545 | |
a9be0692 | 2546 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && id128_is_valid(e->name)) { |
50f20cfd | 2547 | |
a963990f | 2548 | /* Event for root directory */ |
50f20cfd | 2549 | |
d617408e LP |
2550 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2551 | (void) add_directory(j, d->path, e->name); | |
50f20cfd LP |
2552 | } |
2553 | ||
2554 | return; | |
2555 | } | |
2556 | ||
2557 | if (e->mask & IN_IGNORED) | |
2558 | return; | |
2559 | ||
a9be0692 | 2560 | log_debug("Unexpected inotify event."); |
50f20cfd LP |
2561 | } |
2562 | ||
a963990f LP |
2563 | static int determine_change(sd_journal *j) { |
2564 | bool b; | |
2565 | ||
2566 | assert(j); | |
2567 | ||
2568 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2569 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2570 | ||
2571 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2572 | } | |
2573 | ||
a5344d2c | 2574 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2575 | bool got_something = false; |
50f20cfd | 2576 | |
1ae464e0 TA |
2577 | assert_return(j, -EINVAL); |
2578 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2579 | |
10c4d640 LP |
2580 | if (j->inotify_fd < 0) /* We have no inotify fd yet? Then there's noting to process. */ |
2581 | return 0; | |
2582 | ||
39c155ea | 2583 | j->last_process_usec = now(CLOCK_MONOTONIC); |
f9346444 | 2584 | j->last_invalidate_counter = j->current_invalidate_counter; |
39c155ea | 2585 | |
50f20cfd | 2586 | for (;;) { |
0254e944 | 2587 | union inotify_event_buffer buffer; |
50f20cfd LP |
2588 | ssize_t l; |
2589 | ||
0254e944 | 2590 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2591 | if (l < 0) { |
8add30a0 | 2592 | if (ERRNO_IS_TRANSIENT(errno)) |
a963990f | 2593 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; |
50f20cfd LP |
2594 | |
2595 | return -errno; | |
2596 | } | |
2597 | ||
a963990f LP |
2598 | got_something = true; |
2599 | ||
f7c1ad4f | 2600 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2601 | process_inotify_event(j, e); |
50f20cfd LP |
2602 | } |
2603 | } | |
6ad1d1c3 | 2604 | |
e02d1cf7 | 2605 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2606 | int r; |
39c155ea | 2607 | uint64_t t; |
e02d1cf7 | 2608 | |
1ae464e0 TA |
2609 | assert_return(j, -EINVAL); |
2610 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2611 | |
a963990f | 2612 | if (j->inotify_fd < 0) { |
28ca867a | 2613 | JournalFile *f; |
a963990f LP |
2614 | |
2615 | /* This is the first invocation, hence create the | |
2616 | * inotify watch */ | |
2617 | r = sd_journal_get_fd(j); | |
2618 | if (r < 0) | |
2619 | return r; | |
2620 | ||
28ca867a MS |
2621 | /* Server might have done some vacuuming while we weren't watching. |
2622 | Get rid of the deleted files now so they don't stay around indefinitely. */ | |
90e74a66 | 2623 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
28ca867a | 2624 | r = journal_file_fstat(f); |
8581b9f9 MS |
2625 | if (r == -EIDRM) |
2626 | remove_file_real(j, f); | |
2627 | else if (r < 0) { | |
28ca867a MS |
2628 | log_debug_errno(r,"Failed to fstat() journal file '%s' : %m", f->path); |
2629 | continue; | |
2630 | } | |
28ca867a MS |
2631 | } |
2632 | ||
a963990f LP |
2633 | /* The journal might have changed since the context |
2634 | * object was created and we weren't watching before, | |
2635 | * hence don't wait for anything, and return | |
2636 | * immediately. */ | |
2637 | return determine_change(j); | |
2638 | } | |
2639 | ||
39c155ea LP |
2640 | r = sd_journal_get_timeout(j, &t); |
2641 | if (r < 0) | |
2642 | return r; | |
2643 | ||
f5fbe71d | 2644 | if (t != UINT64_MAX) { |
496db330 | 2645 | t = usec_sub_unsigned(t, now(CLOCK_MONOTONIC)); |
85210bff | 2646 | |
f5fbe71d | 2647 | if (timeout_usec == UINT64_MAX || timeout_usec > t) |
39c155ea | 2648 | timeout_usec = t; |
85210bff LP |
2649 | } |
2650 | ||
a963990f LP |
2651 | do { |
2652 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2653 | } while (r == -EINTR); | |
e02d1cf7 LP |
2654 | |
2655 | if (r < 0) | |
2656 | return r; | |
2657 | ||
a963990f | 2658 | return sd_journal_process(j); |
e02d1cf7 LP |
2659 | } |
2660 | ||
08984293 | 2661 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
08984293 LP |
2662 | JournalFile *f; |
2663 | bool first = true; | |
581483bf | 2664 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2665 | int r; |
2666 | ||
1ae464e0 TA |
2667 | assert_return(j, -EINVAL); |
2668 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2669 | assert_return(from || to, -EINVAL); | |
2670 | assert_return(from != to, -EINVAL); | |
08984293 | 2671 | |
90e74a66 | 2672 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
08984293 LP |
2673 | usec_t fr, t; |
2674 | ||
2675 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2676 | if (r == -ENOENT) |
2677 | continue; | |
08984293 LP |
2678 | if (r < 0) |
2679 | return r; | |
2680 | if (r == 0) | |
2681 | continue; | |
2682 | ||
2683 | if (first) { | |
581483bf LP |
2684 | fmin = fr; |
2685 | tmax = t; | |
08984293 LP |
2686 | first = false; |
2687 | } else { | |
581483bf LP |
2688 | fmin = MIN(fr, fmin); |
2689 | tmax = MAX(t, tmax); | |
08984293 LP |
2690 | } |
2691 | } | |
2692 | ||
581483bf LP |
2693 | if (from) |
2694 | *from = fmin; | |
2695 | if (to) | |
2696 | *to = tmax; | |
2697 | ||
08984293 LP |
2698 | return first ? 0 : 1; |
2699 | } | |
2700 | ||
f4cb1bfd LP |
2701 | _public_ int sd_journal_get_cutoff_monotonic_usec( |
2702 | sd_journal *j, | |
2703 | sd_id128_t boot_id, | |
2704 | uint64_t *ret_from, | |
2705 | uint64_t *ret_to) { | |
2706 | ||
2707 | uint64_t from = UINT64_MAX, to = UINT64_MAX; | |
1651e2c6 | 2708 | bool found = false; |
f4cb1bfd | 2709 | JournalFile *f; |
08984293 LP |
2710 | int r; |
2711 | ||
1ae464e0 TA |
2712 | assert_return(j, -EINVAL); |
2713 | assert_return(!journal_pid_changed(j), -ECHILD); | |
f4cb1bfd | 2714 | assert_return(ret_from != ret_to, -EINVAL); |
08984293 | 2715 | |
90e74a66 | 2716 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
f4cb1bfd | 2717 | usec_t ff, tt; |
08984293 | 2718 | |
f4cb1bfd | 2719 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &ff, &tt); |
9f8d2983 LP |
2720 | if (r == -ENOENT) |
2721 | continue; | |
08984293 LP |
2722 | if (r < 0) |
2723 | return r; | |
2724 | if (r == 0) | |
2725 | continue; | |
2726 | ||
1651e2c6 | 2727 | if (found) { |
f4cb1bfd LP |
2728 | from = MIN(ff, from); |
2729 | to = MAX(tt, to); | |
08984293 | 2730 | } else { |
f4cb1bfd LP |
2731 | from = ff; |
2732 | to = tt; | |
1651e2c6 | 2733 | found = true; |
08984293 LP |
2734 | } |
2735 | } | |
2736 | ||
f4cb1bfd LP |
2737 | if (ret_from) |
2738 | *ret_from = from; | |
2739 | if (ret_to) | |
2740 | *ret_to = to; | |
2741 | ||
1651e2c6 | 2742 | return found; |
08984293 LP |
2743 | } |
2744 | ||
dca6219e | 2745 | void journal_print_header(sd_journal *j) { |
dca6219e LP |
2746 | JournalFile *f; |
2747 | bool newline = false; | |
2748 | ||
2749 | assert(j); | |
2750 | ||
90e74a66 | 2751 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
dca6219e LP |
2752 | if (newline) |
2753 | putchar('\n'); | |
2754 | else | |
2755 | newline = true; | |
2756 | ||
2757 | journal_file_print_header(f); | |
2758 | } | |
2759 | } | |
08984293 | 2760 | |
d8671b1c | 2761 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *ret) { |
a1a03e30 LP |
2762 | JournalFile *f; |
2763 | uint64_t sum = 0; | |
2764 | ||
1ae464e0 TA |
2765 | assert_return(j, -EINVAL); |
2766 | assert_return(!journal_pid_changed(j), -ECHILD); | |
d8671b1c | 2767 | assert_return(ret, -EINVAL); |
a1a03e30 | 2768 | |
90e74a66 | 2769 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
a1a03e30 | 2770 | struct stat st; |
d8671b1c | 2771 | uint64_t b; |
a1a03e30 LP |
2772 | |
2773 | if (fstat(f->fd, &st) < 0) | |
2774 | return -errno; | |
2775 | ||
d8671b1c LP |
2776 | b = (uint64_t) st.st_blocks; |
2777 | if (b > UINT64_MAX / 512) | |
2778 | return -EOVERFLOW; | |
2779 | b *= 512; | |
2780 | ||
2781 | if (sum > UINT64_MAX - b) | |
2782 | return -EOVERFLOW; | |
2783 | sum += b; | |
a1a03e30 LP |
2784 | } |
2785 | ||
d8671b1c | 2786 | *ret = sum; |
a1a03e30 LP |
2787 | return 0; |
2788 | } | |
2789 | ||
3c1668da | 2790 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
900952ec | 2791 | int r; |
3c1668da | 2792 | |
1ae464e0 TA |
2793 | assert_return(j, -EINVAL); |
2794 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2795 | assert_return(!isempty(field), -EINVAL); | |
2796 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da | 2797 | |
900952ec LP |
2798 | r = free_and_strdup(&j->unique_field, field); |
2799 | if (r < 0) | |
2800 | return r; | |
3c1668da | 2801 | |
3c1668da LP |
2802 | j->unique_file = NULL; |
2803 | j->unique_offset = 0; | |
360af4cf | 2804 | j->unique_file_lost = false; |
3c1668da LP |
2805 | |
2806 | return 0; | |
2807 | } | |
2808 | ||
0e0b0529 LP |
2809 | _public_ int sd_journal_enumerate_unique( |
2810 | sd_journal *j, | |
2811 | const void **ret_data, | |
2812 | size_t *ret_size) { | |
2813 | ||
3c1668da | 2814 | size_t k; |
19a2bd80 | 2815 | |
1ae464e0 TA |
2816 | assert_return(j, -EINVAL); |
2817 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1ae464e0 | 2818 | assert_return(j->unique_field, -EINVAL); |
19a2bd80 | 2819 | |
3c1668da | 2820 | k = strlen(j->unique_field); |
19a2bd80 | 2821 | |
3c1668da | 2822 | if (!j->unique_file) { |
360af4cf ZJS |
2823 | if (j->unique_file_lost) |
2824 | return 0; | |
2825 | ||
c1f906bd | 2826 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2827 | if (!j->unique_file) |
2828 | return 0; | |
360af4cf | 2829 | |
3c1668da LP |
2830 | j->unique_offset = 0; |
2831 | } | |
19a2bd80 | 2832 | |
3c1668da LP |
2833 | for (;;) { |
2834 | JournalFile *of; | |
ae97089d | 2835 | Object *o; |
0e35afff | 2836 | void *odata; |
3c1668da LP |
2837 | size_t ol; |
2838 | bool found; | |
ae97089d | 2839 | int r; |
3c1668da | 2840 | |
bdc02927 | 2841 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2842 | if (j->unique_offset == 0) { |
2843 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2844 | if (r < 0) | |
2845 | return r; | |
2846 | ||
2847 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2848 | } else { | |
2849 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2850 | if (r < 0) | |
2851 | return r; | |
2852 | ||
2853 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2854 | } | |
2855 | ||
2856 | /* We reached the end of the list? Then start again, with the next file */ | |
2857 | if (j->unique_offset == 0) { | |
c1f906bd | 2858 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2859 | if (!j->unique_file) |
3c1668da LP |
2860 | return 0; |
2861 | ||
3c1668da LP |
2862 | continue; |
2863 | } | |
2864 | ||
d05089d8 MS |
2865 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2866 | * instead, so that we can look at this data object at the same | |
3c1668da | 2867 | * time as one on another file */ |
d05089d8 | 2868 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2869 | if (r < 0) |
2870 | return r; | |
2871 | ||
2872 | /* Let's do the type check by hand, since we used 0 context above. */ | |
baaa35ad ZJS |
2873 | if (o->object.type != OBJECT_DATA) |
2874 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
2875 | "%s:offset " OFSfmt ": object has type %d, expected %d", | |
2876 | j->unique_file->path, | |
2877 | j->unique_offset, | |
2878 | o->object.type, OBJECT_DATA); | |
ae97089d | 2879 | |
0e35afff DDM |
2880 | r = journal_file_data_payload(j->unique_file, o, j->unique_offset, NULL, 0, |
2881 | j->data_threshold, &odata, &ol); | |
3c1668da LP |
2882 | if (r < 0) |
2883 | return r; | |
2884 | ||
0f99f74a | 2885 | /* Check if we have at least the field name and "=". */ |
baaa35ad ZJS |
2886 | if (ol <= k) |
2887 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
2888 | "%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2889 | j->unique_file->path, | |
2890 | j->unique_offset, ol, k + 1); | |
2891 | ||
0e0b0529 | 2892 | if (memcmp(odata, j->unique_field, k) != 0 || ((const char*) odata)[k] != '=') |
baaa35ad ZJS |
2893 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), |
2894 | "%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2895 | j->unique_file->path, | |
2896 | j->unique_offset, | |
2897 | j->unique_field); | |
0f99f74a | 2898 | |
0e0b0529 LP |
2899 | /* OK, now let's see if we already returned this data object by checking if it exists in the |
2900 | * earlier traversed files. */ | |
3c1668da | 2901 | found = false; |
90e74a66 | 2902 | ORDERED_HASHMAP_FOREACH(of, j->files) { |
3c1668da LP |
2903 | if (of == j->unique_file) |
2904 | break; | |
2905 | ||
ed71f956 LP |
2906 | /* Skip this file it didn't have any fields indexed */ |
2907 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3c1668da LP |
2908 | continue; |
2909 | ||
2e1a8a5d LP |
2910 | /* We can reuse the hash from our current file only on old-style journal files |
2911 | * without keyed hashes. On new-style files we have to calculate the hash anew, to | |
2912 | * take the per-file hash seed into consideration. */ | |
2913 | if (!JOURNAL_HEADER_KEYED_HASH(j->unique_file->header) && !JOURNAL_HEADER_KEYED_HASH(of->header)) | |
2914 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), NULL, NULL); | |
2915 | else | |
2916 | r = journal_file_find_data_object(of, odata, ol, NULL, NULL); | |
3c1668da LP |
2917 | if (r < 0) |
2918 | return r; | |
ed71f956 | 2919 | if (r > 0) { |
3c1668da | 2920 | found = true; |
ed71f956 LP |
2921 | break; |
2922 | } | |
3c1668da LP |
2923 | } |
2924 | ||
06cc69d4 JJ |
2925 | if (found) |
2926 | continue; | |
2927 | ||
0e35afff DDM |
2928 | *ret_data = odata; |
2929 | *ret_size = ol; | |
3c1668da LP |
2930 | |
2931 | return 1; | |
2932 | } | |
2933 | } | |
2934 | ||
76cbafcd ZJS |
2935 | _public_ int sd_journal_enumerate_available_unique(sd_journal *j, const void **data, size_t *size) { |
2936 | for (;;) { | |
2937 | int r; | |
2938 | ||
2939 | r = sd_journal_enumerate_unique(j, data, size); | |
2940 | if (r >= 0) | |
2941 | return r; | |
2942 | if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r)) | |
2943 | return r; | |
2944 | /* Try with the next field. sd_journal_enumerate_unique() modifies state, so on the next try | |
2945 | * we will access the next field. */ | |
2946 | } | |
2947 | } | |
2948 | ||
115646c7 | 2949 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
2950 | if (!j) |
2951 | return; | |
2952 | ||
2953 | j->unique_file = NULL; | |
2954 | j->unique_offset = 0; | |
360af4cf | 2955 | j->unique_file_lost = false; |
3c1668da | 2956 | } |
85210bff | 2957 | |
eb86030e LP |
2958 | _public_ int sd_journal_enumerate_fields(sd_journal *j, const char **field) { |
2959 | int r; | |
2960 | ||
2961 | assert_return(j, -EINVAL); | |
2962 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2963 | assert_return(field, -EINVAL); | |
2964 | ||
2965 | if (!j->fields_file) { | |
2966 | if (j->fields_file_lost) | |
2967 | return 0; | |
2968 | ||
2969 | j->fields_file = ordered_hashmap_first(j->files); | |
2970 | if (!j->fields_file) | |
2971 | return 0; | |
2972 | ||
2973 | j->fields_hash_table_index = 0; | |
2974 | j->fields_offset = 0; | |
2975 | } | |
2976 | ||
2977 | for (;;) { | |
2978 | JournalFile *f, *of; | |
eb86030e LP |
2979 | uint64_t m; |
2980 | Object *o; | |
2981 | size_t sz; | |
2982 | bool found; | |
2983 | ||
2984 | f = j->fields_file; | |
2985 | ||
2986 | if (j->fields_offset == 0) { | |
2987 | bool eof = false; | |
2988 | ||
2989 | /* We are not yet positioned at any field. Let's pick the first one */ | |
2990 | r = journal_file_map_field_hash_table(f); | |
2991 | if (r < 0) | |
2992 | return r; | |
2993 | ||
2994 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); | |
2995 | for (;;) { | |
2996 | if (j->fields_hash_table_index >= m) { | |
2997 | /* Reached the end of the hash table, go to the next file. */ | |
2998 | eof = true; | |
2999 | break; | |
3000 | } | |
3001 | ||
3002 | j->fields_offset = le64toh(f->field_hash_table[j->fields_hash_table_index].head_hash_offset); | |
3003 | ||
3004 | if (j->fields_offset != 0) | |
3005 | break; | |
3006 | ||
3007 | /* Empty hash table bucket, go to next one */ | |
3008 | j->fields_hash_table_index++; | |
3009 | } | |
3010 | ||
3011 | if (eof) { | |
3012 | /* Proceed with next file */ | |
3013 | j->fields_file = ordered_hashmap_next(j->files, f->path); | |
3014 | if (!j->fields_file) { | |
3015 | *field = NULL; | |
3016 | return 0; | |
3017 | } | |
3018 | ||
3019 | j->fields_offset = 0; | |
3020 | j->fields_hash_table_index = 0; | |
3021 | continue; | |
3022 | } | |
3023 | ||
3024 | } else { | |
3025 | /* We are already positioned at a field. If so, let's figure out the next field from it */ | |
3026 | ||
3027 | r = journal_file_move_to_object(f, OBJECT_FIELD, j->fields_offset, &o); | |
3028 | if (r < 0) | |
3029 | return r; | |
3030 | ||
3031 | j->fields_offset = le64toh(o->field.next_hash_offset); | |
3032 | if (j->fields_offset == 0) { | |
3033 | /* Reached the end of the hash table chain */ | |
3034 | j->fields_hash_table_index++; | |
3035 | continue; | |
3036 | } | |
3037 | } | |
3038 | ||
1f133e0d | 3039 | /* We use OBJECT_UNUSED here, so that the iterator below doesn't remove our mmap window */ |
eb86030e LP |
3040 | r = journal_file_move_to_object(f, OBJECT_UNUSED, j->fields_offset, &o); |
3041 | if (r < 0) | |
3042 | return r; | |
3043 | ||
3044 | /* Because we used OBJECT_UNUSED above, we need to do our type check manually */ | |
baaa35ad ZJS |
3045 | if (o->object.type != OBJECT_FIELD) |
3046 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
3047 | "%s:offset " OFSfmt ": object has type %i, expected %i", | |
3048 | f->path, j->fields_offset, | |
3049 | o->object.type, OBJECT_FIELD); | |
eb86030e LP |
3050 | |
3051 | sz = le64toh(o->object.size) - offsetof(Object, field.payload); | |
3052 | ||
3053 | /* Let's see if we already returned this field name before. */ | |
3054 | found = false; | |
90e74a66 | 3055 | ORDERED_HASHMAP_FOREACH(of, j->files) { |
eb86030e LP |
3056 | if (of == f) |
3057 | break; | |
3058 | ||
3059 | /* Skip this file it didn't have any fields indexed */ | |
3060 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3061 | continue; | |
3062 | ||
27bf0ab7 DDM |
3063 | if (!JOURNAL_HEADER_KEYED_HASH(f->header) && !JOURNAL_HEADER_KEYED_HASH(of->header)) |
3064 | r = journal_file_find_field_object_with_hash(of, o->field.payload, sz, | |
3065 | le64toh(o->field.hash), NULL, NULL); | |
3066 | else | |
3067 | r = journal_file_find_field_object(of, o->field.payload, sz, NULL, NULL); | |
eb86030e LP |
3068 | if (r < 0) |
3069 | return r; | |
3070 | if (r > 0) { | |
3071 | found = true; | |
3072 | break; | |
3073 | } | |
3074 | } | |
3075 | ||
3076 | if (found) | |
3077 | continue; | |
3078 | ||
3079 | /* Check if this is really a valid string containing no NUL byte */ | |
3080 | if (memchr(o->field.payload, 0, sz)) | |
3081 | return -EBADMSG; | |
3082 | ||
adbd80f5 | 3083 | if (j->data_threshold > 0 && sz > j->data_threshold) |
eb86030e LP |
3084 | sz = j->data_threshold; |
3085 | ||
319a4f4b | 3086 | if (!GREEDY_REALLOC(j->fields_buffer, sz + 1)) |
eb86030e LP |
3087 | return -ENOMEM; |
3088 | ||
3089 | memcpy(j->fields_buffer, o->field.payload, sz); | |
3090 | j->fields_buffer[sz] = 0; | |
3091 | ||
3092 | if (!field_is_valid(j->fields_buffer)) | |
3093 | return -EBADMSG; | |
3094 | ||
3095 | *field = j->fields_buffer; | |
3096 | return 1; | |
3097 | } | |
3098 | } | |
3099 | ||
3100 | _public_ void sd_journal_restart_fields(sd_journal *j) { | |
3101 | if (!j) | |
3102 | return; | |
3103 | ||
3104 | j->fields_file = NULL; | |
3105 | j->fields_hash_table_index = 0; | |
3106 | j->fields_offset = 0; | |
3107 | j->fields_file_lost = false; | |
3108 | } | |
3109 | ||
85210bff | 3110 | _public_ int sd_journal_reliable_fd(sd_journal *j) { |
1ae464e0 TA |
3111 | assert_return(j, -EINVAL); |
3112 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
3113 | |
3114 | return !j->on_network; | |
3115 | } | |
d4205751 LP |
3116 | |
3117 | static char *lookup_field(const char *field, void *userdata) { | |
99534007 | 3118 | sd_journal *j = ASSERT_PTR(userdata); |
d4205751 LP |
3119 | const void *data; |
3120 | size_t size, d; | |
3121 | int r; | |
3122 | ||
3123 | assert(field); | |
d4205751 LP |
3124 | |
3125 | r = sd_journal_get_data(j, field, &data, &size); | |
3126 | if (r < 0 || | |
3127 | size > REPLACE_VAR_MAX) | |
3128 | return strdup(field); | |
3129 | ||
3130 | d = strlen(field) + 1; | |
3131 | ||
3132 | return strndup((const char*) data + d, size - d); | |
3133 | } | |
3134 | ||
3135 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
3136 | const void *data; | |
3137 | size_t size; | |
3138 | sd_id128_t id; | |
3139 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
3140 | char *t; | |
3141 | int r; | |
3142 | ||
1ae464e0 TA |
3143 | assert_return(j, -EINVAL); |
3144 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3145 | assert_return(ret, -EINVAL); | |
d4205751 LP |
3146 | |
3147 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
3148 | if (r < 0) | |
3149 | return r; | |
3150 | ||
3151 | cid = strndup((const char*) data + 11, size - 11); | |
3152 | if (!cid) | |
3153 | return -ENOMEM; | |
3154 | ||
3155 | r = sd_id128_from_string(cid, &id); | |
3156 | if (r < 0) | |
3157 | return r; | |
3158 | ||
844ec79b | 3159 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
3160 | if (r < 0) |
3161 | return r; | |
3162 | ||
3163 | t = replace_var(text, lookup_field, j); | |
3164 | if (!t) | |
3165 | return -ENOMEM; | |
3166 | ||
3167 | *ret = t; | |
3168 | return 0; | |
3169 | } | |
8f1e860f LP |
3170 | |
3171 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 3172 | assert_return(ret, -EINVAL); |
8f1e860f | 3173 | |
844ec79b | 3174 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 3175 | } |
93b73b06 LP |
3176 | |
3177 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
3178 | assert_return(j, -EINVAL); |
3179 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
3180 | |
3181 | j->data_threshold = sz; | |
3182 | return 0; | |
3183 | } | |
3184 | ||
3185 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
3186 | assert_return(j, -EINVAL); |
3187 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3188 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
3189 | |
3190 | *sz = j->data_threshold; | |
3191 | return 0; | |
3192 | } | |
39fd5b08 JS |
3193 | |
3194 | _public_ int sd_journal_has_runtime_files(sd_journal *j) { | |
3195 | assert_return(j, -EINVAL); | |
3196 | ||
3197 | return j->has_runtime_files; | |
3198 | } | |
3199 | ||
3200 | _public_ int sd_journal_has_persistent_files(sd_journal *j) { | |
3201 | assert_return(j, -EINVAL); | |
3202 | ||
3203 | return j->has_persistent_files; | |
3204 | } |