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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
87d2c1ff | 2 | |
87d2c1ff | 3 | #include <errno.h> |
87d2c1ff | 4 | #include <fcntl.h> |
82e24b00 | 5 | #include <inttypes.h> |
07630cea LP |
6 | #include <linux/magic.h> |
7 | #include <poll.h> | |
3fbf9cbb | 8 | #include <stddef.h> |
50f20cfd | 9 | #include <sys/inotify.h> |
85210bff | 10 | #include <sys/vfs.h> |
07630cea | 11 | #include <unistd.h> |
87d2c1ff LP |
12 | |
13 | #include "sd-journal.h" | |
c004493c | 14 | |
b5efdb8a | 15 | #include "alloc-util.h" |
07630cea LP |
16 | #include "catalog.h" |
17 | #include "compress.h" | |
a0956174 | 18 | #include "dirent-util.h" |
686d13b9 | 19 | #include "env-file.h" |
9e8b1ec0 | 20 | #include "escape.h" |
3ffd4af2 | 21 | #include "fd-util.h" |
07630cea | 22 | #include "fileio.h" |
f97b34a6 | 23 | #include "format-util.h" |
77601719 | 24 | #include "fs-util.h" |
07630cea LP |
25 | #include "hashmap.h" |
26 | #include "hostname-util.h" | |
a9be0692 | 27 | #include "id128-util.h" |
c004493c | 28 | #include "io-util.h" |
87d2c1ff | 29 | #include "journal-def.h" |
cec736d2 | 30 | #include "journal-file.h" |
07630cea | 31 | #include "journal-internal.h" |
cec736d2 | 32 | #include "list.h" |
de7b95cd | 33 | #include "lookup3.h" |
d8b4d14d | 34 | #include "nulstr-util.h" |
07630cea | 35 | #include "path-util.h" |
dccca82b | 36 | #include "process-util.h" |
d4205751 | 37 | #include "replace-var.h" |
15a5e950 LP |
38 | #include "stat-util.h" |
39 | #include "stdio-util.h" | |
07630cea LP |
40 | #include "string-util.h" |
41 | #include "strv.h" | |
456aa879 | 42 | #include "syslog-util.h" |
87d2c1ff | 43 | |
9e8abdf0 LP |
44 | #define JOURNAL_FILES_MAX 7168 |
45 | ||
85210bff LP |
46 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
47 | ||
8dd7cbce LP |
48 | /* The maximum size of variable values we'll expand in catalog entries. We bind this to PATH_MAX for now, as |
49 | * we want to be able to show all officially valid paths at least */ | |
50 | #define REPLACE_VAR_MAX PATH_MAX | |
d4205751 | 51 | |
93b73b06 LP |
52 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
53 | ||
a9a245c1 ZJS |
54 | static void remove_file_real(sd_journal *j, JournalFile *f); |
55 | ||
a65f06bb ZJS |
56 | static bool journal_pid_changed(sd_journal *j) { |
57 | assert(j); | |
58 | ||
59 | /* We don't support people creating a journal object and | |
60 | * keeping it around over a fork(). Let's complain. */ | |
61 | ||
df0ff127 | 62 | return j->original_pid != getpid_cached(); |
a65f06bb ZJS |
63 | } |
64 | ||
5768d259 | 65 | static int journal_put_error(sd_journal *j, int r, const char *path) { |
8231485b | 66 | _cleanup_free_ char *copy = NULL; |
3ac251b8 LP |
67 | int k; |
68 | ||
5768d259 LP |
69 | /* Memorize an error we encountered, and store which |
70 | * file/directory it was generated from. Note that we store | |
71 | * only *one* path per error code, as the error code is the | |
72 | * key into the hashmap, and the path is the value. This means | |
73 | * we keep track only of all error kinds, but not of all error | |
74 | * locations. This has the benefit that the hashmap cannot | |
75 | * grow beyond bounds. | |
76 | * | |
77 | * We return an error here only if we didn't manage to | |
78 | * memorize the real error. */ | |
79 | ||
6fe391c5 ZJS |
80 | if (r >= 0) |
81 | return r; | |
82 | ||
5768d259 LP |
83 | if (path) { |
84 | copy = strdup(path); | |
85 | if (!copy) | |
86 | return -ENOMEM; | |
8231485b | 87 | } |
5768d259 | 88 | |
faa7e5a4 | 89 | k = hashmap_ensure_put(&j->errors, NULL, INT_TO_PTR(r), copy); |
5768d259 | 90 | if (k < 0) { |
5768d259 LP |
91 | if (k == -EEXIST) |
92 | return 0; | |
93 | ||
94 | return k; | |
95 | } | |
96 | ||
8231485b | 97 | TAKE_PTR(copy); |
5768d259 | 98 | return 0; |
6fe391c5 ZJS |
99 | } |
100 | ||
de190aef | 101 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
102 | JournalFile *f; |
103 | ||
104 | assert(j); | |
105 | ||
106 | j->current_file = NULL; | |
107 | j->current_field = 0; | |
108 | ||
90e74a66 | 109 | ORDERED_HASHMAP_FOREACH(f, j->files) |
1fc605b0 | 110 | journal_file_reset_location(f); |
8f9b6cd9 LP |
111 | } |
112 | ||
a87247dd | 113 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 114 | assert(l); |
3742095b | 115 | assert(IN_SET(type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef | 116 | assert(f); |
de190aef | 117 | |
bba6e4ae LP |
118 | *l = (Location) { |
119 | .type = type, | |
120 | .seqnum = le64toh(o->entry.seqnum), | |
121 | .seqnum_id = f->header->seqnum_id, | |
122 | .realtime = le64toh(o->entry.realtime), | |
123 | .monotonic = le64toh(o->entry.monotonic), | |
124 | .boot_id = o->entry.boot_id, | |
125 | .xor_hash = le64toh(o->entry.xor_hash), | |
126 | .seqnum_set = true, | |
127 | .realtime_set = true, | |
128 | .monotonic_set = true, | |
129 | .xor_hash_set = true, | |
130 | }; | |
de190aef LP |
131 | } |
132 | ||
1eb6332d | 133 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
134 | assert(j); |
135 | assert(f); | |
136 | assert(o); | |
137 | ||
1eb6332d | 138 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
139 | |
140 | j->current_file = f; | |
141 | j->current_field = 0; | |
142 | ||
6573ef05 MS |
143 | /* Let f know its candidate entry was picked. */ |
144 | assert(f->location_type == LOCATION_SEEK); | |
145 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
146 | } |
147 | ||
cbdca852 LP |
148 | static int match_is_valid(const void *data, size_t size) { |
149 | const char *b, *p; | |
150 | ||
151 | assert(data); | |
152 | ||
153 | if (size < 2) | |
154 | return false; | |
155 | ||
e0567bc8 | 156 | if (((char*) data)[0] == '_' && ((char*) data)[1] == '_') |
cbdca852 LP |
157 | return false; |
158 | ||
159 | b = data; | |
160 | for (p = b; p < b + size; p++) { | |
161 | ||
162 | if (*p == '=') | |
163 | return p > b; | |
164 | ||
165 | if (*p == '_') | |
166 | continue; | |
167 | ||
168 | if (*p >= 'A' && *p <= 'Z') | |
169 | continue; | |
170 | ||
171 | if (*p >= '0' && *p <= '9') | |
172 | continue; | |
173 | ||
174 | return false; | |
175 | } | |
176 | ||
177 | return false; | |
178 | } | |
179 | ||
180 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef LP |
181 | const uint8_t *a = _a, *b = _b; |
182 | size_t j; | |
de190aef LP |
183 | |
184 | for (j = 0; j < s && j < t; j++) { | |
185 | ||
de190aef | 186 | if (a[j] != b[j]) |
cbdca852 | 187 | return false; |
de190aef | 188 | |
cbdca852 LP |
189 | if (a[j] == '=') |
190 | return true; | |
de190aef LP |
191 | } |
192 | ||
bc302926 | 193 | assert_not_reached("\"=\" not found"); |
cbdca852 LP |
194 | } |
195 | ||
196 | static Match *match_new(Match *p, MatchType t) { | |
197 | Match *m; | |
198 | ||
2f5435a1 | 199 | m = new(Match, 1); |
cbdca852 LP |
200 | if (!m) |
201 | return NULL; | |
202 | ||
2f5435a1 LP |
203 | *m = (Match) { |
204 | .type = t, | |
205 | .parent = p, | |
206 | }; | |
cbdca852 | 207 | |
2f5435a1 | 208 | if (p) |
71fda00f | 209 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
210 | |
211 | return m; | |
212 | } | |
213 | ||
214 | static void match_free(Match *m) { | |
215 | assert(m); | |
216 | ||
217 | while (m->matches) | |
218 | match_free(m->matches); | |
219 | ||
220 | if (m->parent) | |
71fda00f | 221 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
222 | |
223 | free(m->data); | |
224 | free(m); | |
225 | } | |
226 | ||
227 | static void match_free_if_empty(Match *m) { | |
c5a10d9c | 228 | if (!m || m->matches) |
cbdca852 LP |
229 | return; |
230 | ||
231 | match_free(m); | |
de190aef LP |
232 | } |
233 | ||
a5344d2c | 234 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
cd34b3c6 | 235 | Match *l3, *l4, *add_here = NULL, *m; |
cde8c5f7 | 236 | uint64_t hash; |
87d2c1ff | 237 | |
1ae464e0 TA |
238 | assert_return(j, -EINVAL); |
239 | assert_return(!journal_pid_changed(j), -ECHILD); | |
240 | assert_return(data, -EINVAL); | |
cbdca852 LP |
241 | |
242 | if (size == 0) | |
243 | size = strlen(data); | |
244 | ||
1ae464e0 | 245 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 246 | |
cd34b3c6 HH |
247 | /* level 0: AND term |
248 | * level 1: OR terms | |
249 | * level 2: AND terms | |
250 | * level 3: OR terms | |
251 | * level 4: concrete matches */ | |
cbdca852 LP |
252 | |
253 | if (!j->level0) { | |
cd34b3c6 | 254 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
255 | if (!j->level0) |
256 | return -ENOMEM; | |
257 | } | |
258 | ||
259 | if (!j->level1) { | |
cd34b3c6 | 260 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
261 | if (!j->level1) |
262 | return -ENOMEM; | |
263 | } | |
264 | ||
cd34b3c6 HH |
265 | if (!j->level2) { |
266 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
267 | if (!j->level2) | |
268 | return -ENOMEM; | |
269 | } | |
270 | ||
271 | assert(j->level0->type == MATCH_AND_TERM); | |
272 | assert(j->level1->type == MATCH_OR_TERM); | |
273 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 274 | |
4ce534f4 LP |
275 | /* Old-style Jenkins (unkeyed) hashing only here. We do not cover new-style siphash (keyed) hashing |
276 | * here, since it's different for each file, and thus can't be pre-calculated in the Match object. */ | |
20b0acfa | 277 | hash = jenkins_hash64(data, size); |
de190aef | 278 | |
cd34b3c6 HH |
279 | LIST_FOREACH(matches, l3, j->level2->matches) { |
280 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 281 | |
cd34b3c6 HH |
282 | LIST_FOREACH(matches, l4, l3->matches) { |
283 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 284 | |
cbdca852 LP |
285 | /* Exactly the same match already? Then ignore |
286 | * this addition */ | |
cde8c5f7 | 287 | if (l4->hash == hash && |
cd34b3c6 HH |
288 | l4->size == size && |
289 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
290 | return 0; |
291 | ||
292 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
293 | if (same_field(data, size, l4->data, l4->size)) { |
294 | add_here = l3; | |
cbdca852 LP |
295 | break; |
296 | } | |
297 | } | |
298 | ||
299 | if (add_here) | |
300 | break; | |
de190aef LP |
301 | } |
302 | ||
cbdca852 | 303 | if (!add_here) { |
cd34b3c6 | 304 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
305 | if (!add_here) |
306 | goto fail; | |
307 | } | |
308 | ||
309 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 310 | if (!m) |
cbdca852 | 311 | goto fail; |
87d2c1ff | 312 | |
cde8c5f7 | 313 | m->hash = hash; |
1cc101f1 | 314 | m->size = size; |
cbdca852 LP |
315 | m->data = memdup(data, size); |
316 | if (!m->data) | |
317 | goto fail; | |
318 | ||
319 | detach_location(j); | |
320 | ||
321 | return 0; | |
322 | ||
323 | fail: | |
c5a10d9c ZJS |
324 | match_free_if_empty(add_here); |
325 | match_free_if_empty(j->level2); | |
326 | match_free_if_empty(j->level1); | |
327 | match_free_if_empty(j->level0); | |
cbdca852 LP |
328 | |
329 | return -ENOMEM; | |
330 | } | |
331 | ||
cd34b3c6 | 332 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 TA |
333 | assert_return(j, -EINVAL); |
334 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1cc101f1 | 335 | |
cbdca852 LP |
336 | if (!j->level0) |
337 | return 0; | |
338 | ||
339 | if (!j->level1) | |
340 | return 0; | |
341 | ||
342 | if (!j->level1->matches) | |
343 | return 0; | |
344 | ||
cd34b3c6 HH |
345 | j->level1 = NULL; |
346 | j->level2 = NULL; | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 TA |
352 | assert_return(j, -EINVAL); |
353 | assert_return(!journal_pid_changed(j), -ECHILD); | |
cd34b3c6 HH |
354 | |
355 | if (!j->level0) | |
356 | return 0; | |
357 | ||
358 | if (!j->level1) | |
359 | return 0; | |
360 | ||
361 | if (!j->level2) | |
362 | return 0; | |
363 | ||
364 | if (!j->level2->matches) | |
365 | return 0; | |
cbdca852 | 366 | |
cd34b3c6 | 367 | j->level2 = NULL; |
cbdca852 LP |
368 | return 0; |
369 | } | |
370 | ||
371 | static char *match_make_string(Match *m) { | |
6b430fdb | 372 | char *p = NULL, *r; |
cbdca852 LP |
373 | Match *i; |
374 | bool enclose = false; | |
375 | ||
376 | if (!m) | |
4ad16808 | 377 | return strdup("none"); |
cbdca852 LP |
378 | |
379 | if (m->type == MATCH_DISCRETE) | |
9e8b1ec0 | 380 | return cescape_length(m->data, m->size); |
cbdca852 | 381 | |
cbdca852 LP |
382 | LIST_FOREACH(matches, i, m->matches) { |
383 | char *t, *k; | |
384 | ||
385 | t = match_make_string(i); | |
6b430fdb ZJS |
386 | if (!t) |
387 | return mfree(p); | |
cbdca852 LP |
388 | |
389 | if (p) { | |
605405c6 | 390 | k = strjoin(p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t); |
cbdca852 LP |
391 | free(p); |
392 | free(t); | |
393 | ||
394 | if (!k) | |
395 | return NULL; | |
396 | ||
397 | p = k; | |
398 | ||
399 | enclose = true; | |
bc302926 | 400 | } else |
cbdca852 | 401 | p = t; |
87d2c1ff LP |
402 | } |
403 | ||
cbdca852 | 404 | if (enclose) { |
605405c6 | 405 | r = strjoin("(", p, ")"); |
cbdca852 LP |
406 | free(p); |
407 | return r; | |
408 | } | |
87d2c1ff | 409 | |
cbdca852 LP |
410 | return p; |
411 | } | |
de7b95cd | 412 | |
cbdca852 LP |
413 | char *journal_make_match_string(sd_journal *j) { |
414 | assert(j); | |
8f9b6cd9 | 415 | |
cbdca852 | 416 | return match_make_string(j->level0); |
87d2c1ff LP |
417 | } |
418 | ||
a5344d2c LP |
419 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
420 | if (!j) | |
421 | return; | |
87d2c1ff | 422 | |
cbdca852 LP |
423 | if (j->level0) |
424 | match_free(j->level0); | |
de7b95cd | 425 | |
cd34b3c6 | 426 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 427 | |
de190aef | 428 | detach_location(j); |
87d2c1ff LP |
429 | } |
430 | ||
b6849042 | 431 | _pure_ static int compare_with_location(const JournalFile *f, const Location *l, const JournalFile *current_file) { |
90c88092 YW |
432 | int r; |
433 | ||
487d3720 | 434 | assert(f); |
de190aef | 435 | assert(l); |
487d3720 | 436 | assert(f->location_type == LOCATION_SEEK); |
4c701096 | 437 | assert(IN_SET(l->type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef LP |
438 | |
439 | if (l->monotonic_set && | |
487d3720 | 440 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 441 | l->realtime_set && |
487d3720 | 442 | f->current_realtime == l->realtime && |
de190aef | 443 | l->xor_hash_set && |
b6849042 | 444 | f->current_xor_hash == l->xor_hash && |
b17f651a | 445 | l->seqnum_set && |
446 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id) && | |
447 | f->current_seqnum == l->seqnum && | |
b6849042 | 448 | f != current_file) |
de190aef LP |
449 | return 0; |
450 | ||
451 | if (l->seqnum_set && | |
487d3720 | 452 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
de190aef | 453 | |
90c88092 YW |
454 | r = CMP(f->current_seqnum, l->seqnum); |
455 | if (r != 0) | |
456 | return r; | |
de190aef LP |
457 | } |
458 | ||
459 | if (l->monotonic_set && | |
487d3720 | 460 | sd_id128_equal(f->current_boot_id, l->boot_id)) { |
de190aef | 461 | |
90c88092 YW |
462 | r = CMP(f->current_monotonic, l->monotonic); |
463 | if (r != 0) | |
464 | return r; | |
de190aef LP |
465 | } |
466 | ||
467 | if (l->realtime_set) { | |
468 | ||
90c88092 YW |
469 | r = CMP(f->current_realtime, l->realtime); |
470 | if (r != 0) | |
471 | return r; | |
de190aef LP |
472 | } |
473 | ||
474 | if (l->xor_hash_set) { | |
de190aef | 475 | |
90c88092 YW |
476 | r = CMP(f->current_xor_hash, l->xor_hash); |
477 | if (r != 0) | |
478 | return r; | |
de190aef LP |
479 | } |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
cbdca852 LP |
484 | static int next_for_match( |
485 | sd_journal *j, | |
486 | Match *m, | |
487 | JournalFile *f, | |
488 | uint64_t after_offset, | |
489 | direction_t direction, | |
490 | Object **ret, | |
491 | uint64_t *offset) { | |
492 | ||
de7b95cd | 493 | int r; |
cbdca852 LP |
494 | uint64_t np = 0; |
495 | Object *n; | |
de7b95cd LP |
496 | |
497 | assert(j); | |
cbdca852 LP |
498 | assert(m); |
499 | assert(f); | |
de7b95cd | 500 | |
cbdca852 | 501 | if (m->type == MATCH_DISCRETE) { |
4ce534f4 | 502 | uint64_t dp, hash; |
de190aef | 503 | |
4ce534f4 LP |
504 | /* If the keyed hash logic is used, we need to calculate the hash fresh per file. Otherwise |
505 | * we can use what we pre-calculated. */ | |
506 | if (JOURNAL_HEADER_KEYED_HASH(f->header)) | |
507 | hash = journal_file_hash_data(f, m->data, m->size); | |
508 | else | |
509 | hash = m->hash; | |
510 | ||
511 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, hash, NULL, &dp); | |
de190aef LP |
512 | if (r <= 0) |
513 | return r; | |
514 | ||
cbdca852 | 515 | return journal_file_move_to_entry_by_offset_for_data(f, dp, after_offset, direction, ret, offset); |
de190aef | 516 | |
cbdca852 LP |
517 | } else if (m->type == MATCH_OR_TERM) { |
518 | Match *i; | |
de7b95cd | 519 | |
cbdca852 | 520 | /* Find the earliest match beyond after_offset */ |
de190aef | 521 | |
cbdca852 LP |
522 | LIST_FOREACH(matches, i, m->matches) { |
523 | uint64_t cp; | |
de190aef | 524 | |
cbdca852 | 525 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
526 | if (r < 0) |
527 | return r; | |
cbdca852 | 528 | else if (r > 0) { |
bc302926 | 529 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
530 | np = cp; |
531 | } | |
532 | } | |
b4e5f920 | 533 | |
bc302926 ZJS |
534 | if (np == 0) |
535 | return 0; | |
536 | ||
cbdca852 | 537 | } else if (m->type == MATCH_AND_TERM) { |
2bc8ca0c | 538 | Match *i, *last_moved; |
de190aef | 539 | |
cbdca852 | 540 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 541 | * this until we find an offset that matches for all |
cbdca852 | 542 | * matches. */ |
de190aef | 543 | |
cbdca852 LP |
544 | if (!m->matches) |
545 | return 0; | |
de7b95cd | 546 | |
2bc8ca0c ZJS |
547 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
548 | if (r <= 0) | |
549 | return r; | |
de190aef | 550 | |
2bc8ca0c ZJS |
551 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
552 | last_moved = m->matches; | |
de190aef | 553 | |
2bc8ca0c ZJS |
554 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
555 | uint64_t cp; | |
de190aef | 556 | |
2bc8ca0c ZJS |
557 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
558 | if (r <= 0) | |
559 | return r; | |
de190aef | 560 | |
2bc8ca0c ZJS |
561 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
562 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
563 | np = cp; | |
564 | last_moved = i; | |
de190aef | 565 | } |
2bc8ca0c | 566 | } |
cbdca852 | 567 | } |
de190aef | 568 | |
bc302926 | 569 | assert(np > 0); |
de190aef | 570 | |
cbdca852 LP |
571 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
572 | if (r < 0) | |
573 | return r; | |
de7b95cd | 574 | |
de190aef | 575 | if (ret) |
cbdca852 | 576 | *ret = n; |
de190aef | 577 | if (offset) |
cbdca852 | 578 | *offset = np; |
de190aef LP |
579 | |
580 | return 1; | |
581 | } | |
582 | ||
cbdca852 LP |
583 | static int find_location_for_match( |
584 | sd_journal *j, | |
585 | Match *m, | |
586 | JournalFile *f, | |
587 | direction_t direction, | |
588 | Object **ret, | |
589 | uint64_t *offset) { | |
590 | ||
de190aef | 591 | int r; |
de190aef LP |
592 | |
593 | assert(j); | |
cbdca852 | 594 | assert(m); |
de190aef | 595 | assert(f); |
de190aef | 596 | |
cbdca852 | 597 | if (m->type == MATCH_DISCRETE) { |
4ce534f4 LP |
598 | uint64_t dp, hash; |
599 | ||
600 | if (JOURNAL_HEADER_KEYED_HASH(f->header)) | |
601 | hash = journal_file_hash_data(f, m->data, m->size); | |
602 | else | |
603 | hash = m->hash; | |
de190aef | 604 | |
4ce534f4 | 605 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, hash, NULL, &dp); |
de7b95cd LP |
606 | if (r <= 0) |
607 | return r; | |
608 | ||
cbdca852 | 609 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 610 | |
cbdca852 LP |
611 | if (j->current_location.type == LOCATION_HEAD) |
612 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_DOWN, ret, offset); | |
613 | if (j->current_location.type == LOCATION_TAIL) | |
614 | return journal_file_next_entry_for_data(f, NULL, 0, dp, DIRECTION_UP, ret, offset); | |
615 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) | |
616 | return journal_file_move_to_entry_by_seqnum_for_data(f, dp, j->current_location.seqnum, direction, ret, offset); | |
617 | if (j->current_location.monotonic_set) { | |
618 | r = journal_file_move_to_entry_by_monotonic_for_data(f, dp, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
619 | if (r != -ENOENT) | |
620 | return r; | |
621 | } | |
622 | if (j->current_location.realtime_set) | |
623 | return journal_file_move_to_entry_by_realtime_for_data(f, dp, j->current_location.realtime, direction, ret, offset); | |
de190aef | 624 | |
cbdca852 | 625 | return journal_file_next_entry_for_data(f, NULL, 0, dp, direction, ret, offset); |
de7b95cd | 626 | |
cbdca852 LP |
627 | } else if (m->type == MATCH_OR_TERM) { |
628 | uint64_t np = 0; | |
629 | Object *n; | |
630 | Match *i; | |
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 | |
cbdca852 LP |
649 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, &n); |
650 | if (r < 0) | |
651 | return r; | |
de7b95cd | 652 | |
cbdca852 LP |
653 | if (ret) |
654 | *ret = n; | |
655 | if (offset) | |
656 | *offset = np; | |
de190aef | 657 | |
cbdca852 | 658 | return 1; |
e892bd17 | 659 | |
cbdca852 LP |
660 | } else { |
661 | Match *i; | |
662 | uint64_t np = 0; | |
663 | ||
664 | assert(m->type == MATCH_AND_TERM); | |
665 | ||
666 | /* First jump to the last match, and then find the | |
667 | * next one where all matches match */ | |
668 | ||
669 | if (!m->matches) | |
670 | return 0; | |
671 | ||
672 | LIST_FOREACH(matches, i, m->matches) { | |
673 | uint64_t cp; | |
674 | ||
675 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
676 | if (r <= 0) | |
4b067dc9 LP |
677 | return r; |
678 | ||
bc302926 | 679 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 680 | np = cp; |
de7b95cd LP |
681 | } |
682 | ||
cbdca852 LP |
683 | return next_for_match(j, m, f, np, direction, ret, offset); |
684 | } | |
685 | } | |
de190aef | 686 | |
cbdca852 LP |
687 | static int find_location_with_matches( |
688 | sd_journal *j, | |
689 | JournalFile *f, | |
690 | direction_t direction, | |
691 | Object **ret, | |
692 | uint64_t *offset) { | |
693 | ||
694 | int r; | |
695 | ||
696 | assert(j); | |
697 | assert(f); | |
698 | assert(ret); | |
699 | assert(offset); | |
700 | ||
701 | if (!j->level0) { | |
702 | /* No matches is simple */ | |
703 | ||
704 | if (j->current_location.type == LOCATION_HEAD) | |
f534928a | 705 | return journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset); |
cbdca852 | 706 | if (j->current_location.type == LOCATION_TAIL) |
f534928a | 707 | return journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset); |
cbdca852 LP |
708 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
709 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
710 | if (j->current_location.monotonic_set) { | |
711 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
712 | if (r != -ENOENT) | |
713 | return r; | |
de7b95cd | 714 | } |
cbdca852 LP |
715 | if (j->current_location.realtime_set) |
716 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 717 | |
f534928a | 718 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
719 | } else |
720 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
721 | } | |
de7b95cd | 722 | |
cbdca852 LP |
723 | static int next_with_matches( |
724 | sd_journal *j, | |
725 | JournalFile *f, | |
726 | direction_t direction, | |
727 | Object **ret, | |
728 | uint64_t *offset) { | |
729 | ||
cbdca852 LP |
730 | assert(j); |
731 | assert(f); | |
732 | assert(ret); | |
733 | assert(offset); | |
734 | ||
cbdca852 LP |
735 | /* No matches is easy. We simple advance the file |
736 | * pointer by one. */ | |
737 | if (!j->level0) | |
b29ddfcb | 738 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
739 | |
740 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 741 | * with an offset at least one step larger */ |
b29ddfcb MS |
742 | return next_for_match(j, j->level0, f, |
743 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
744 | : f->current_offset - 1, | |
745 | direction, ret, offset); | |
de7b95cd LP |
746 | } |
747 | ||
58439db4 | 748 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 749 | Object *c; |
6e693b42 | 750 | uint64_t cp, n_entries; |
cbdca852 | 751 | int r; |
de190aef LP |
752 | |
753 | assert(j); | |
754 | assert(f); | |
755 | ||
950c07d4 MS |
756 | n_entries = le64toh(f->header->n_entries); |
757 | ||
758 | /* If we hit EOF before, we don't need to look into this file again | |
759 | * unless direction changed or new entries appeared. */ | |
760 | if (f->last_direction == direction && f->location_type == LOCATION_TAIL && | |
761 | n_entries == f->last_n_entries) | |
762 | return 0; | |
668c965a | 763 | |
950c07d4 MS |
764 | f->last_n_entries = n_entries; |
765 | ||
766 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
767 | /* LOCATION_SEEK here means we did the work in a previous |
768 | * iteration and the current location already points to a | |
769 | * candidate entry. */ | |
487d3720 MS |
770 | if (f->location_type != LOCATION_SEEK) { |
771 | r = next_with_matches(j, f, direction, &c, &cp); | |
772 | if (r <= 0) | |
773 | return r; | |
466ccd92 | 774 | |
950c07d4 | 775 | journal_file_save_location(f, c, cp); |
487d3720 | 776 | } |
de190aef | 777 | } else { |
950c07d4 MS |
778 | f->last_direction = direction; |
779 | ||
cbdca852 | 780 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
781 | if (r <= 0) |
782 | return r; | |
487d3720 | 783 | |
950c07d4 | 784 | journal_file_save_location(f, c, cp); |
de190aef LP |
785 | } |
786 | ||
bc302926 | 787 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
788 | * that is actually different from what we were previously |
789 | * looking at. This is necessary to handle entries which exist | |
790 | * in two (or more) journal files, and which shall all be | |
791 | * suppressed but one. */ | |
792 | ||
de190aef LP |
793 | for (;;) { |
794 | bool found; | |
795 | ||
796 | if (j->current_location.type == LOCATION_DISCRETE) { | |
797 | int k; | |
798 | ||
b6849042 | 799 | k = compare_with_location(f, &j->current_location, j->current_file); |
1cdf7175 CH |
800 | |
801 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
802 | } else |
803 | found = true; | |
804 | ||
487d3720 | 805 | if (found) |
de190aef | 806 | return 1; |
de190aef LP |
807 | |
808 | r = next_with_matches(j, f, direction, &c, &cp); | |
809 | if (r <= 0) | |
810 | return r; | |
487d3720 | 811 | |
950c07d4 | 812 | journal_file_save_location(f, c, cp); |
de190aef LP |
813 | } |
814 | } | |
815 | ||
e892bd17 | 816 | static int real_journal_next(sd_journal *j, direction_t direction) { |
5d4ba7f2 VC |
817 | JournalFile *new_file = NULL; |
818 | unsigned i, n_files; | |
819 | const void **files; | |
a002d44b | 820 | Object *o; |
87d2c1ff LP |
821 | int r; |
822 | ||
1ae464e0 TA |
823 | assert_return(j, -EINVAL); |
824 | assert_return(!journal_pid_changed(j), -ECHILD); | |
87d2c1ff | 825 | |
5d4ba7f2 VC |
826 | r = iterated_cache_get(j->files_cache, NULL, &files, &n_files); |
827 | if (r < 0) | |
828 | return r; | |
829 | ||
830 | for (i = 0; i < n_files; i++) { | |
831 | JournalFile *f = (JournalFile *)files[i]; | |
de190aef | 832 | bool found; |
87d2c1ff | 833 | |
58439db4 | 834 | r = next_beyond_location(j, f, direction); |
e590af26 | 835 | if (r < 0) { |
da927ba9 | 836 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 837 | remove_file_real(j, f); |
e590af26 | 838 | continue; |
6573ef05 MS |
839 | } else if (r == 0) { |
840 | f->location_type = LOCATION_TAIL; | |
cec736d2 | 841 | continue; |
6573ef05 | 842 | } |
87d2c1ff | 843 | |
468b21de | 844 | if (!new_file) |
de190aef LP |
845 | found = true; |
846 | else { | |
847 | int k; | |
848 | ||
d8ae66d7 | 849 | k = journal_file_compare_locations(f, new_file); |
de190aef | 850 | |
bc302926 | 851 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
852 | } |
853 | ||
e499c999 | 854 | if (found) |
468b21de | 855 | new_file = f; |
87d2c1ff LP |
856 | } |
857 | ||
468b21de | 858 | if (!new_file) |
de190aef | 859 | return 0; |
ae2cc8ef | 860 | |
e499c999 | 861 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
862 | if (r < 0) |
863 | return r; | |
864 | ||
1eb6332d | 865 | set_location(j, new_file, o); |
ae2cc8ef | 866 | |
de190aef LP |
867 | return 1; |
868 | } | |
ae2cc8ef | 869 | |
a5344d2c | 870 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
871 | return real_journal_next(j, DIRECTION_DOWN); |
872 | } | |
ae2cc8ef | 873 | |
a5344d2c | 874 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
875 | return real_journal_next(j, DIRECTION_UP); |
876 | } | |
ae2cc8ef | 877 | |
6f003b43 | 878 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 879 | int c = 0, r; |
ae2cc8ef | 880 | |
1ae464e0 TA |
881 | assert_return(j, -EINVAL); |
882 | assert_return(!journal_pid_changed(j), -ECHILD); | |
41d544a1 | 883 | assert_return(skip <= INT_MAX, -ERANGE); |
de190aef | 884 | |
6f003b43 LP |
885 | if (skip == 0) { |
886 | /* If this is not a discrete skip, then at least | |
887 | * resolve the current location */ | |
04884354 LK |
888 | if (j->current_location.type != LOCATION_DISCRETE) { |
889 | r = real_journal_next(j, direction); | |
890 | if (r < 0) | |
891 | return r; | |
892 | } | |
6f003b43 LP |
893 | |
894 | return 0; | |
895 | } | |
896 | ||
897 | do { | |
898 | r = real_journal_next(j, direction); | |
de190aef LP |
899 | if (r < 0) |
900 | return r; | |
901 | ||
902 | if (r == 0) | |
903 | return c; | |
904 | ||
905 | skip--; | |
906 | c++; | |
6f003b43 | 907 | } while (skip > 0); |
87d2c1ff | 908 | |
de190aef | 909 | return c; |
87d2c1ff LP |
910 | } |
911 | ||
6f003b43 LP |
912 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
913 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
914 | } | |
de190aef | 915 | |
6f003b43 LP |
916 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
917 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
918 | } |
919 | ||
a5344d2c | 920 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 921 | Object *o; |
87d2c1ff | 922 | int r; |
5905d7cf | 923 | char bid[SD_ID128_STRING_MAX], sid[SD_ID128_STRING_MAX]; |
87d2c1ff | 924 | |
1ae464e0 TA |
925 | assert_return(j, -EINVAL); |
926 | assert_return(!journal_pid_changed(j), -ECHILD); | |
927 | assert_return(cursor, -EINVAL); | |
87d2c1ff | 928 | |
3fbf9cbb LP |
929 | if (!j->current_file || j->current_file->current_offset <= 0) |
930 | return -EADDRNOTAVAIL; | |
87d2c1ff | 931 | |
de190aef | 932 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
933 | if (r < 0) |
934 | return r; | |
935 | ||
3fbf9cbb LP |
936 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
937 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 938 | |
3fbf9cbb | 939 | if (asprintf(cursor, |
507f22bd ZJS |
940 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
941 | sid, le64toh(o->entry.seqnum), | |
942 | bid, le64toh(o->entry.monotonic), | |
943 | le64toh(o->entry.realtime), | |
944 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 945 | return -ENOMEM; |
87d2c1ff | 946 | |
6f47ad30 | 947 | return 0; |
87d2c1ff LP |
948 | } |
949 | ||
a5344d2c | 950 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
de190aef | 951 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
da277e90 ZJS |
952 | bool seqnum_id_set = false, |
953 | seqnum_set = false, | |
954 | boot_id_set = false, | |
955 | monotonic_set = false, | |
956 | realtime_set = false, | |
957 | xor_hash_set = false; | |
de190aef | 958 | sd_id128_t seqnum_id, boot_id; |
da277e90 | 959 | int r; |
de190aef | 960 | |
1ae464e0 TA |
961 | assert_return(j, -EINVAL); |
962 | assert_return(!journal_pid_changed(j), -ECHILD); | |
963 | assert_return(!isempty(cursor), -EINVAL); | |
de190aef | 964 | |
da277e90 ZJS |
965 | for (const char *p = cursor;;) { |
966 | _cleanup_free_ char *word = NULL; | |
de190aef | 967 | |
da277e90 ZJS |
968 | r = extract_first_word(&p, &word, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
969 | if (r < 0) | |
970 | return r; | |
971 | if (r == 0) | |
972 | break; | |
de190aef | 973 | |
da277e90 ZJS |
974 | if (word[0] == '\0' || word[1] != '=') |
975 | return -EINVAL; | |
de190aef | 976 | |
a2a5291b | 977 | switch (word[0]) { |
de190aef LP |
978 | case 's': |
979 | seqnum_id_set = true; | |
da277e90 ZJS |
980 | r = sd_id128_from_string(word + 2, &seqnum_id); |
981 | if (r < 0) | |
982 | return r; | |
de190aef LP |
983 | break; |
984 | ||
985 | case 'i': | |
986 | seqnum_set = true; | |
da277e90 ZJS |
987 | if (sscanf(word + 2, "%llx", &seqnum) != 1) |
988 | return -EINVAL; | |
de190aef LP |
989 | break; |
990 | ||
991 | case 'b': | |
992 | boot_id_set = true; | |
da277e90 | 993 | r = sd_id128_from_string(word + 2, &boot_id); |
de190aef LP |
994 | break; |
995 | ||
996 | case 'm': | |
997 | monotonic_set = true; | |
da277e90 ZJS |
998 | if (sscanf(word + 2, "%llx", &monotonic) != 1) |
999 | return -EINVAL; | |
de190aef LP |
1000 | break; |
1001 | ||
1002 | case 't': | |
1003 | realtime_set = true; | |
da277e90 ZJS |
1004 | if (sscanf(word + 2, "%llx", &realtime) != 1) |
1005 | return -EINVAL; | |
de190aef LP |
1006 | break; |
1007 | ||
1008 | case 'x': | |
1009 | xor_hash_set = true; | |
da277e90 ZJS |
1010 | if (sscanf(word + 2, "%llx", &xor_hash) != 1) |
1011 | return -EINVAL; | |
de190aef LP |
1012 | break; |
1013 | } | |
de190aef LP |
1014 | } |
1015 | ||
1016 | if ((!seqnum_set || !seqnum_id_set) && | |
1017 | (!monotonic_set || !boot_id_set) && | |
1018 | !realtime_set) | |
1019 | return -EINVAL; | |
1020 | ||
bba6e4ae LP |
1021 | detach_location(j); |
1022 | j->current_location = (Location) { | |
1023 | .type = LOCATION_SEEK, | |
1024 | }; | |
de190aef LP |
1025 | |
1026 | if (realtime_set) { | |
1027 | j->current_location.realtime = (uint64_t) realtime; | |
1028 | j->current_location.realtime_set = true; | |
1029 | } | |
1030 | ||
1031 | if (seqnum_set && seqnum_id_set) { | |
1032 | j->current_location.seqnum = (uint64_t) seqnum; | |
1033 | j->current_location.seqnum_id = seqnum_id; | |
1034 | j->current_location.seqnum_set = true; | |
1035 | } | |
1036 | ||
1037 | if (monotonic_set && boot_id_set) { | |
1038 | j->current_location.monotonic = (uint64_t) monotonic; | |
1039 | j->current_location.boot_id = boot_id; | |
1040 | j->current_location.monotonic_set = true; | |
1041 | } | |
1042 | ||
1043 | if (xor_hash_set) { | |
1044 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1045 | j->current_location.xor_hash_set = true; | |
1046 | } | |
1047 | ||
1048 | return 0; | |
1049 | } | |
1050 | ||
c6511e85 LP |
1051 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1052 | int r; | |
c6511e85 LP |
1053 | Object *o; |
1054 | ||
1ae464e0 TA |
1055 | assert_return(j, -EINVAL); |
1056 | assert_return(!journal_pid_changed(j), -ECHILD); | |
1057 | assert_return(!isempty(cursor), -EINVAL); | |
c6511e85 LP |
1058 | |
1059 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1060 | return -EADDRNOTAVAIL; | |
1061 | ||
1062 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1063 | if (r < 0) | |
1064 | return r; | |
1065 | ||
9ed794a3 | 1066 | for (;;) { |
c6511e85 | 1067 | _cleanup_free_ char *item = NULL; |
c6511e85 | 1068 | unsigned long long ll; |
7294bb5b | 1069 | sd_id128_t id; |
c6511e85 LP |
1070 | int k = 0; |
1071 | ||
7294bb5b SS |
1072 | r = extract_first_word(&cursor, &item, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
1073 | if (r < 0) | |
1074 | return r; | |
c6511e85 | 1075 | |
7294bb5b SS |
1076 | if (r == 0) |
1077 | break; | |
c6511e85 | 1078 | |
7294bb5b SS |
1079 | if (strlen(item) < 2 || item[1] != '=') |
1080 | return -EINVAL; | |
1081 | ||
1082 | switch (item[0]) { | |
c6511e85 LP |
1083 | |
1084 | case 's': | |
1085 | k = sd_id128_from_string(item+2, &id); | |
1086 | if (k < 0) | |
1087 | return k; | |
1088 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1089 | return 0; | |
1090 | break; | |
1091 | ||
1092 | case 'i': | |
1093 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1094 | return -EINVAL; | |
1095 | if (ll != le64toh(o->entry.seqnum)) | |
1096 | return 0; | |
1097 | break; | |
1098 | ||
1099 | case 'b': | |
1100 | k = sd_id128_from_string(item+2, &id); | |
1101 | if (k < 0) | |
1102 | return k; | |
1103 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1104 | return 0; | |
1105 | break; | |
1106 | ||
1107 | case 'm': | |
1108 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1109 | return -EINVAL; | |
1110 | if (ll != le64toh(o->entry.monotonic)) | |
1111 | return 0; | |
1112 | break; | |
1113 | ||
1114 | case 't': | |
1115 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1116 | return -EINVAL; | |
1117 | if (ll != le64toh(o->entry.realtime)) | |
1118 | return 0; | |
1119 | break; | |
1120 | ||
1121 | case 'x': | |
1122 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1123 | return -EINVAL; | |
1124 | if (ll != le64toh(o->entry.xor_hash)) | |
1125 | return 0; | |
1126 | break; | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | return 1; | |
1131 | } | |
1132 | ||
a5344d2c | 1133 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 TA |
1134 | assert_return(j, -EINVAL); |
1135 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1136 | |
bba6e4ae LP |
1137 | detach_location(j); |
1138 | ||
1139 | j->current_location = (Location) { | |
1140 | .type = LOCATION_SEEK, | |
1141 | .boot_id = boot_id, | |
1142 | .monotonic = usec, | |
1143 | .monotonic_set = true, | |
1144 | }; | |
de190aef LP |
1145 | |
1146 | return 0; | |
1147 | } | |
1148 | ||
a5344d2c | 1149 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 TA |
1150 | assert_return(j, -EINVAL); |
1151 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1152 | |
bba6e4ae LP |
1153 | detach_location(j); |
1154 | ||
1155 | j->current_location = (Location) { | |
1156 | .type = LOCATION_SEEK, | |
1157 | .realtime = usec, | |
1158 | .realtime_set = true, | |
1159 | }; | |
de190aef LP |
1160 | |
1161 | return 0; | |
1162 | } | |
1163 | ||
a5344d2c | 1164 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 TA |
1165 | assert_return(j, -EINVAL); |
1166 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1167 | |
bba6e4ae LP |
1168 | detach_location(j); |
1169 | ||
1170 | j->current_location = (Location) { | |
1171 | .type = LOCATION_HEAD, | |
1172 | }; | |
de190aef LP |
1173 | |
1174 | return 0; | |
1175 | } | |
1176 | ||
a5344d2c | 1177 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 TA |
1178 | assert_return(j, -EINVAL); |
1179 | assert_return(!journal_pid_changed(j), -ECHILD); | |
de190aef | 1180 | |
bba6e4ae LP |
1181 | detach_location(j); |
1182 | ||
1183 | j->current_location = (Location) { | |
1184 | .type = LOCATION_TAIL, | |
1185 | }; | |
de190aef LP |
1186 | |
1187 | return 0; | |
87d2c1ff LP |
1188 | } |
1189 | ||
85210bff | 1190 | static void check_network(sd_journal *j, int fd) { |
85210bff LP |
1191 | assert(j); |
1192 | ||
1193 | if (j->on_network) | |
1194 | return; | |
1195 | ||
77f9fa3b | 1196 | j->on_network = fd_is_network_fs(fd); |
85210bff LP |
1197 | } |
1198 | ||
a688baa8 ZJS |
1199 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1200 | const char *full, *tilded, *atted; | |
1201 | ||
63c372cb LP |
1202 | full = strjoina(prefix, ".journal"); |
1203 | tilded = strjoina(full, "~"); | |
1204 | atted = strjoina(prefix, "@"); | |
a688baa8 | 1205 | |
0cbd293e | 1206 | return STR_IN_SET(filename, full, tilded) || |
a688baa8 ZJS |
1207 | startswith(filename, atted); |
1208 | } | |
1209 | ||
1210 | static bool file_type_wanted(int flags, const char *filename) { | |
d617408e LP |
1211 | assert(filename); |
1212 | ||
a688baa8 ZJS |
1213 | if (!endswith(filename, ".journal") && !endswith(filename, ".journal~")) |
1214 | return false; | |
1215 | ||
1216 | /* no flags set → every type is OK */ | |
1217 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1218 | return true; | |
1219 | ||
1220 | if (flags & SD_JOURNAL_SYSTEM && file_has_type_prefix("system", filename)) | |
1221 | return true; | |
1222 | ||
1223 | if (flags & SD_JOURNAL_CURRENT_USER) { | |
1224 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; | |
1225 | ||
5ffa8c81 | 1226 | xsprintf(prefix, "user-"UID_FMT, getuid()); |
a688baa8 ZJS |
1227 | |
1228 | if (file_has_type_prefix(prefix, filename)) | |
1229 | return true; | |
1230 | } | |
1231 | ||
1232 | return false; | |
1233 | } | |
1234 | ||
5d1ce257 LP |
1235 | static bool path_has_prefix(sd_journal *j, const char *path, const char *prefix) { |
1236 | assert(j); | |
1237 | assert(path); | |
1238 | assert(prefix); | |
1239 | ||
1240 | if (j->toplevel_fd >= 0) | |
1241 | return false; | |
1242 | ||
1243 | return path_startswith(path, prefix); | |
1244 | } | |
1245 | ||
9c66f528 LP |
1246 | static void track_file_disposition(sd_journal *j, JournalFile *f) { |
1247 | assert(j); | |
1248 | assert(f); | |
1249 | ||
1250 | if (!j->has_runtime_files && path_has_prefix(j, f->path, "/run")) | |
1251 | j->has_runtime_files = true; | |
1252 | else if (!j->has_persistent_files && path_has_prefix(j, f->path, "/var")) | |
1253 | j->has_persistent_files = true; | |
1254 | } | |
1255 | ||
5d1ce257 LP |
1256 | static const char *skip_slash(const char *p) { |
1257 | ||
1258 | if (!p) | |
1259 | return NULL; | |
1260 | ||
1261 | while (*p == '/') | |
1262 | p++; | |
1263 | ||
1264 | return p; | |
1265 | } | |
1266 | ||
9c66f528 LP |
1267 | static int add_any_file( |
1268 | sd_journal *j, | |
1269 | int fd, | |
1270 | const char *path) { | |
1271 | ||
5d1ce257 | 1272 | bool close_fd = false; |
9c66f528 LP |
1273 | JournalFile *f; |
1274 | struct stat st; | |
d617408e | 1275 | int r, k; |
3fbf9cbb LP |
1276 | |
1277 | assert(j); | |
5d1ce257 | 1278 | assert(fd >= 0 || path); |
3fbf9cbb | 1279 | |
9c66f528 LP |
1280 | if (fd < 0) { |
1281 | if (j->toplevel_fd >= 0) | |
1282 | /* If there's a top-level fd defined make the path relative, explicitly, since otherwise | |
1283 | * openat() ignores the first argument. */ | |
1284 | ||
1285 | fd = openat(j->toplevel_fd, skip_slash(path), O_RDONLY|O_CLOEXEC|O_NONBLOCK); | |
1286 | else | |
1287 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK); | |
1288 | if (fd < 0) { | |
1289 | r = log_debug_errno(errno, "Failed to open journal file %s: %m", path); | |
1290 | goto finish; | |
1291 | } | |
1292 | ||
1293 | close_fd = true; | |
1294 | ||
1295 | r = fd_nonblock(fd, false); | |
1296 | if (r < 0) { | |
1297 | r = log_debug_errno(errno, "Failed to turn off O_NONBLOCK for %s: %m", path); | |
1298 | goto finish; | |
858749f7 LP |
1299 | } |
1300 | } | |
50f20cfd | 1301 | |
9c66f528 LP |
1302 | if (fstat(fd, &st) < 0) { |
1303 | r = log_debug_errno(errno, "Failed to fstat file '%s': %m", path); | |
1304 | goto finish; | |
1305 | } | |
3cc44114 LP |
1306 | |
1307 | r = stat_verify_regular(&st); | |
1308 | if (r < 0) { | |
1309 | log_debug_errno(r, "Refusing to open '%s', as it is not a regular file.", path); | |
9c66f528 | 1310 | goto finish; |
9e8abdf0 LP |
1311 | } |
1312 | ||
9c66f528 LP |
1313 | f = ordered_hashmap_get(j->files, path); |
1314 | if (f) { | |
1315 | if (f->last_stat.st_dev == st.st_dev && | |
1316 | f->last_stat.st_ino == st.st_ino) { | |
5d1ce257 | 1317 | |
9c66f528 LP |
1318 | /* We already track this file, under the same path and with the same device/inode numbers, it's |
1319 | * hence really the same. Mark this file as seen in this generation. This is used to GC old | |
1320 | * files in process_q_overflow() to detect journal files that are still there and discern them | |
1321 | * from those which are gone. */ | |
5d1ce257 | 1322 | |
9c66f528 LP |
1323 | f->last_seen_generation = j->generation; |
1324 | r = 0; | |
1325 | goto finish; | |
5d1ce257 LP |
1326 | } |
1327 | ||
9c66f528 LP |
1328 | /* So we tracked a file under this name, but it has a different inode/device. In that case, it got |
1329 | * replaced (probably due to rotation?), let's drop it hence from our list. */ | |
1330 | remove_file_real(j, f); | |
1331 | f = NULL; | |
1332 | } | |
1333 | ||
1334 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { | |
1335 | log_debug("Too many open journal files, not adding %s.", path); | |
1336 | r = -ETOOMANYREFS; | |
1337 | goto finish; | |
5d1ce257 LP |
1338 | } |
1339 | ||
57850536 | 1340 | r = journal_file_open(fd, path, O_RDONLY, 0, false, 0, false, NULL, j->mmap, NULL, NULL, &f); |
d617408e LP |
1341 | if (r < 0) { |
1342 | log_debug_errno(r, "Failed to open journal file %s: %m", path); | |
9c66f528 | 1343 | goto finish; |
d617408e | 1344 | } |
3fbf9cbb | 1345 | |
72f59706 | 1346 | /* journal_file_dump(f); */ |
de190aef | 1347 | |
c1f906bd | 1348 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb | 1349 | if (r < 0) { |
9c66f528 | 1350 | f->close_fd = false; /* make sure journal_file_close() doesn't close the caller's fd (or our own). We'll let the caller do that, or ourselves */ |
69a3a6fd | 1351 | (void) journal_file_close(f); |
9c66f528 | 1352 | goto finish; |
3fbf9cbb LP |
1353 | } |
1354 | ||
9c66f528 | 1355 | close_fd = false; /* the fd is now owned by the JournalFile object */ |
5d1ce257 | 1356 | |
9c66f528 | 1357 | f->last_seen_generation = j->generation; |
a50d7d43 | 1358 | |
9c66f528 | 1359 | track_file_disposition(j, f); |
85210bff LP |
1360 | check_network(j, f->fd); |
1361 | ||
313cefa1 | 1362 | j->current_invalidate_counter++; |
a963990f | 1363 | |
9c66f528 | 1364 | log_debug("File %s added.", f->path); |
d617408e | 1365 | |
9c66f528 LP |
1366 | r = 0; |
1367 | ||
1368 | finish: | |
1369 | if (close_fd) | |
1370 | safe_close(fd); | |
1371 | ||
1372 | if (r < 0) { | |
1373 | k = journal_put_error(j, r, path); | |
1374 | if (k < 0) | |
1375 | return k; | |
1376 | } | |
d617408e LP |
1377 | |
1378 | return r; | |
50f20cfd LP |
1379 | } |
1380 | ||
fc1813c0 LP |
1381 | static int add_file_by_name( |
1382 | sd_journal *j, | |
1383 | const char *prefix, | |
1384 | const char *filename) { | |
1385 | ||
d617408e | 1386 | const char *path; |
5302ebe1 ZJS |
1387 | |
1388 | assert(j); | |
1389 | assert(prefix); | |
1390 | assert(filename); | |
1391 | ||
5d1ce257 | 1392 | if (j->no_new_files) |
5302ebe1 ZJS |
1393 | return 0; |
1394 | ||
5d1ce257 LP |
1395 | if (!file_type_wanted(j->flags, filename)) |
1396 | return 0; | |
39fd5b08 | 1397 | |
270384b2 | 1398 | path = prefix_roota(prefix, filename); |
5d1ce257 | 1399 | return add_any_file(j, -1, path); |
5302ebe1 ZJS |
1400 | } |
1401 | ||
fc1813c0 LP |
1402 | static void remove_file_by_name( |
1403 | sd_journal *j, | |
1404 | const char *prefix, | |
1405 | const char *filename) { | |
1406 | ||
d617408e | 1407 | const char *path; |
50f20cfd LP |
1408 | JournalFile *f; |
1409 | ||
1410 | assert(j); | |
1411 | assert(prefix); | |
1412 | assert(filename); | |
1413 | ||
270384b2 | 1414 | path = prefix_roota(prefix, filename); |
c1f906bd | 1415 | f = ordered_hashmap_get(j->files, path); |
50f20cfd | 1416 | if (!f) |
d617408e | 1417 | return; |
50f20cfd | 1418 | |
a9a245c1 | 1419 | remove_file_real(j, f); |
a9a245c1 ZJS |
1420 | } |
1421 | ||
1422 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1423 | assert(j); | |
1424 | assert(f); | |
1425 | ||
fc1813c0 | 1426 | (void) ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1427 | |
5ec76417 | 1428 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1429 | |
3c1668da LP |
1430 | if (j->current_file == f) { |
1431 | j->current_file = NULL; | |
1432 | j->current_field = 0; | |
1433 | } | |
1434 | ||
1435 | if (j->unique_file == f) { | |
360af4cf | 1436 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1437 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1438 | j->unique_offset = 0; |
360af4cf ZJS |
1439 | if (!j->unique_file) |
1440 | j->unique_file_lost = true; | |
3c1668da LP |
1441 | } |
1442 | ||
eb86030e LP |
1443 | if (j->fields_file == f) { |
1444 | j->fields_file = ordered_hashmap_next(j->files, j->fields_file->path); | |
1445 | j->fields_offset = 0; | |
1446 | if (!j->fields_file) | |
1447 | j->fields_file_lost = true; | |
1448 | } | |
1449 | ||
69a3a6fd | 1450 | (void) journal_file_close(f); |
50f20cfd | 1451 | |
313cefa1 | 1452 | j->current_invalidate_counter++; |
3fbf9cbb LP |
1453 | } |
1454 | ||
d617408e LP |
1455 | static int dirname_is_machine_id(const char *fn) { |
1456 | sd_id128_t id, machine; | |
456aa879 | 1457 | const char *e; |
d617408e LP |
1458 | int r; |
1459 | ||
456aa879 LP |
1460 | /* Returns true if the specified directory name matches the local machine ID */ |
1461 | ||
d617408e LP |
1462 | r = sd_id128_get_machine(&machine); |
1463 | if (r < 0) | |
1464 | return r; | |
1465 | ||
456aa879 LP |
1466 | e = strchr(fn, '.'); |
1467 | if (e) { | |
1468 | const char *k; | |
1469 | ||
1470 | /* Looks like it has a namespace suffix. Verify that. */ | |
1471 | if (!log_namespace_name_valid(e + 1)) | |
1472 | return false; | |
1473 | ||
1474 | k = strndupa(fn, e - fn); | |
1475 | r = sd_id128_from_string(k, &id); | |
1476 | } else | |
1477 | r = sd_id128_from_string(fn, &id); | |
d617408e LP |
1478 | if (r < 0) |
1479 | return r; | |
1480 | ||
1481 | return sd_id128_equal(id, machine); | |
1482 | } | |
1483 | ||
456aa879 LP |
1484 | static int dirname_has_namespace(const char *fn, const char *namespace) { |
1485 | const char *e; | |
1486 | ||
1487 | /* Returns true if the specified directory name matches the specified namespace */ | |
1488 | ||
1489 | e = strchr(fn, '.'); | |
1490 | if (e) { | |
1491 | const char *k; | |
1492 | ||
1493 | if (!namespace) | |
1494 | return false; | |
1495 | ||
1496 | if (!streq(e + 1, namespace)) | |
1497 | return false; | |
1498 | ||
1499 | k = strndupa(fn, e - fn); | |
1500 | return id128_is_valid(k); | |
1501 | } | |
1502 | ||
1503 | if (namespace) | |
1504 | return false; | |
1505 | ||
1506 | return id128_is_valid(fn); | |
1507 | } | |
1508 | ||
858749f7 LP |
1509 | static bool dirent_is_journal_file(const struct dirent *de) { |
1510 | assert(de); | |
1511 | ||
456aa879 LP |
1512 | /* Returns true if the specified directory entry looks like a journal file we might be interested in */ |
1513 | ||
858749f7 LP |
1514 | if (!IN_SET(de->d_type, DT_REG, DT_LNK, DT_UNKNOWN)) |
1515 | return false; | |
1516 | ||
1517 | return endswith(de->d_name, ".journal") || | |
1518 | endswith(de->d_name, ".journal~"); | |
1519 | } | |
1520 | ||
456aa879 LP |
1521 | static bool dirent_is_journal_subdir(const struct dirent *de) { |
1522 | const char *e, *n; | |
858749f7 LP |
1523 | assert(de); |
1524 | ||
456aa879 LP |
1525 | /* returns true if the specified directory entry looks like a directory that might contain journal |
1526 | * files we might be interested in, i.e. is either a 128bit ID or a 128bit ID suffixed by a | |
1527 | * namespace. */ | |
1528 | ||
858749f7 LP |
1529 | if (!IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN)) |
1530 | return false; | |
1531 | ||
456aa879 LP |
1532 | e = strchr(de->d_name, '.'); |
1533 | if (!e) | |
1534 | return id128_is_valid(de->d_name); /* No namespace */ | |
1535 | ||
1536 | n = strndupa(de->d_name, e - de->d_name); | |
1537 | if (!id128_is_valid(n)) | |
1538 | return false; | |
1539 | ||
1540 | return log_namespace_name_valid(e + 1); | |
858749f7 LP |
1541 | } |
1542 | ||
1543 | static int directory_open(sd_journal *j, const char *path, DIR **ret) { | |
1544 | DIR *d; | |
1545 | ||
1546 | assert(j); | |
1547 | assert(path); | |
1548 | assert(ret); | |
1549 | ||
1550 | if (j->toplevel_fd < 0) | |
1551 | d = opendir(path); | |
1552 | else | |
1553 | /* Open the specified directory relative to the toplevel fd. Enforce that the path specified is | |
1554 | * relative, by dropping the initial slash */ | |
1555 | d = xopendirat(j->toplevel_fd, skip_slash(path), 0); | |
1556 | if (!d) | |
1557 | return -errno; | |
1558 | ||
1559 | *ret = d; | |
1560 | return 0; | |
1561 | } | |
1562 | ||
1563 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname); | |
1564 | ||
1565 | static void directory_enumerate(sd_journal *j, Directory *m, DIR *d) { | |
1566 | struct dirent *de; | |
1567 | ||
1568 | assert(j); | |
1569 | assert(m); | |
1570 | assert(d); | |
1571 | ||
1572 | FOREACH_DIRENT_ALL(de, d, goto fail) { | |
fc1813c0 | 1573 | |
858749f7 | 1574 | if (dirent_is_journal_file(de)) |
fc1813c0 | 1575 | (void) add_file_by_name(j, m->path, de->d_name); |
858749f7 | 1576 | |
456aa879 | 1577 | if (m->is_root && dirent_is_journal_subdir(de)) |
858749f7 LP |
1578 | (void) add_directory(j, m->path, de->d_name); |
1579 | } | |
1580 | ||
1581 | return; | |
1582 | ||
1583 | fail: | |
1584 | log_debug_errno(errno, "Failed to enumerate directory %s, ignoring: %m", m->path); | |
1585 | } | |
1586 | ||
1587 | static void directory_watch(sd_journal *j, Directory *m, int fd, uint32_t mask) { | |
1588 | int r; | |
1589 | ||
1590 | assert(j); | |
1591 | assert(m); | |
1592 | assert(fd >= 0); | |
1593 | ||
1594 | /* Watch this directory if that's enabled and if it not being watched yet. */ | |
1595 | ||
1596 | if (m->wd > 0) /* Already have a watch? */ | |
1597 | return; | |
1598 | if (j->inotify_fd < 0) /* Not watching at all? */ | |
1599 | return; | |
1600 | ||
1601 | m->wd = inotify_add_watch_fd(j->inotify_fd, fd, mask); | |
1602 | if (m->wd < 0) { | |
1603 | log_debug_errno(errno, "Failed to watch journal directory '%s', ignoring: %m", m->path); | |
1604 | return; | |
1605 | } | |
1606 | ||
1607 | r = hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m); | |
1608 | if (r == -EEXIST) | |
1609 | log_debug_errno(r, "Directory '%s' already being watched under a different path, ignoring: %m", m->path); | |
1610 | if (r < 0) { | |
1611 | log_debug_errno(r, "Failed to add watch for journal directory '%s' to hashmap, ignoring: %m", m->path); | |
1612 | (void) inotify_rm_watch(j->inotify_fd, m->wd); | |
1613 | m->wd = -1; | |
1614 | } | |
1615 | } | |
1616 | ||
456aa879 LP |
1617 | static int add_directory( |
1618 | sd_journal *j, | |
1619 | const char *prefix, | |
1620 | const char *dirname) { | |
1621 | ||
7fd1b19b | 1622 | _cleanup_free_ char *path = NULL; |
7fd1b19b | 1623 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1624 | Directory *m; |
d617408e | 1625 | int r, k; |
3fbf9cbb LP |
1626 | |
1627 | assert(j); | |
1628 | assert(prefix); | |
3fbf9cbb | 1629 | |
5d1ce257 LP |
1630 | /* Adds a journal file directory to watch. If the directory is already tracked this updates the inotify watch |
1631 | * and reenumerates directory contents */ | |
d95b1fb3 | 1632 | |
657ee2d8 | 1633 | path = path_join(prefix, dirname); |
d617408e LP |
1634 | if (!path) { |
1635 | r = -ENOMEM; | |
1636 | goto fail; | |
1637 | } | |
3fbf9cbb | 1638 | |
858749f7 | 1639 | log_debug("Considering directory '%s'.", path); |
5d1ce257 LP |
1640 | |
1641 | /* We consider everything local that is in a directory for the local machine ID, or that is stored in /run */ | |
1642 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && | |
1643 | !((dirname && dirname_is_machine_id(dirname) > 0) || path_has_prefix(j, path, "/run"))) | |
858749f7 | 1644 | return 0; |
5d1ce257 | 1645 | |
2b6df46d LP |
1646 | if (dirname && |
1647 | (!(FLAGS_SET(j->flags, SD_JOURNAL_ALL_NAMESPACES) || | |
1648 | dirname_has_namespace(dirname, j->namespace) > 0 || | |
1649 | (FLAGS_SET(j->flags, SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE) && dirname_has_namespace(dirname, NULL) > 0)))) | |
456aa879 LP |
1650 | return 0; |
1651 | ||
858749f7 LP |
1652 | r = directory_open(j, path, &d); |
1653 | if (r < 0) { | |
1654 | log_debug_errno(r, "Failed to open directory '%s': %m", path); | |
d617408e | 1655 | goto fail; |
3fbf9cbb LP |
1656 | } |
1657 | ||
a963990f LP |
1658 | m = hashmap_get(j->directories_by_path, path); |
1659 | if (!m) { | |
2f5435a1 | 1660 | m = new(Directory, 1); |
d617408e LP |
1661 | if (!m) { |
1662 | r = -ENOMEM; | |
1663 | goto fail; | |
1664 | } | |
a963990f | 1665 | |
2f5435a1 LP |
1666 | *m = (Directory) { |
1667 | .is_root = false, | |
1668 | .path = path, | |
1669 | }; | |
a963990f LP |
1670 | |
1671 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f | 1672 | free(m); |
d617408e LP |
1673 | r = -ENOMEM; |
1674 | goto fail; | |
a963990f LP |
1675 | } |
1676 | ||
a50d7d43 | 1677 | path = NULL; /* avoid freeing in cleanup */ |
313cefa1 | 1678 | j->current_invalidate_counter++; |
a963990f | 1679 | |
5ec76417 | 1680 | log_debug("Directory %s added.", m->path); |
a963990f | 1681 | |
a50d7d43 | 1682 | } else if (m->is_root) |
858749f7 | 1683 | return 0; /* Don't 'downgrade' from root directory */ |
a963990f | 1684 | |
858749f7 | 1685 | m->last_seen_generation = j->generation; |
a963990f | 1686 | |
858749f7 LP |
1687 | directory_watch(j, m, dirfd(d), |
1688 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1689 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| | |
1690 | IN_ONLYDIR); | |
a963990f | 1691 | |
858749f7 LP |
1692 | if (!j->no_new_files) |
1693 | directory_enumerate(j, m, d); | |
a963990f | 1694 | |
85210bff LP |
1695 | check_network(j, dirfd(d)); |
1696 | ||
a963990f | 1697 | return 0; |
d617408e LP |
1698 | |
1699 | fail: | |
5d1ce257 | 1700 | k = journal_put_error(j, r, path ?: prefix); |
d617408e LP |
1701 | if (k < 0) |
1702 | return k; | |
1703 | ||
1704 | return r; | |
a963990f LP |
1705 | } |
1706 | ||
d617408e | 1707 | static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) { |
5d1ce257 | 1708 | |
7fd1b19b | 1709 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1710 | Directory *m; |
d617408e | 1711 | int r, k; |
a963990f LP |
1712 | |
1713 | assert(j); | |
a963990f | 1714 | |
5d1ce257 LP |
1715 | /* Adds a root directory to our set of directories to use. If the root directory is already in the set, we |
1716 | * update the inotify logic, and renumerate the directory entries. This call may hence be called to initially | |
1717 | * populate the set, as well as to update it later. */ | |
a963990f | 1718 | |
5d1ce257 LP |
1719 | if (p) { |
1720 | /* If there's a path specified, use it. */ | |
b6741478 | 1721 | |
858749f7 LP |
1722 | log_debug("Considering root directory '%s'.", p); |
1723 | ||
5d1ce257 LP |
1724 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && |
1725 | !path_has_prefix(j, p, "/run")) | |
1726 | return -EINVAL; | |
d617408e | 1727 | |
5d1ce257 LP |
1728 | if (j->prefix) |
1729 | p = strjoina(j->prefix, p); | |
1730 | ||
858749f7 LP |
1731 | r = directory_open(j, p, &d); |
1732 | if (r == -ENOENT && missing_ok) | |
1733 | return 0; | |
1734 | if (r < 0) { | |
1735 | log_debug_errno(r, "Failed to open root directory %s: %m", p); | |
5d1ce257 LP |
1736 | goto fail; |
1737 | } | |
1738 | } else { | |
8e06af80 | 1739 | _cleanup_close_ int dfd = -1; |
5d1ce257 LP |
1740 | |
1741 | /* If there's no path specified, then we use the top-level fd itself. We duplicate the fd here, since | |
1742 | * opendir() will take possession of the fd, and close it, which we don't want. */ | |
1743 | ||
1744 | p = "."; /* store this as "." in the directories hashmap */ | |
1745 | ||
1746 | dfd = fcntl(j->toplevel_fd, F_DUPFD_CLOEXEC, 3); | |
1747 | if (dfd < 0) { | |
1748 | r = -errno; | |
1749 | goto fail; | |
1750 | } | |
1751 | ||
8e06af80 | 1752 | d = take_fdopendir(&dfd); |
5d1ce257 LP |
1753 | if (!d) { |
1754 | r = -errno; | |
5d1ce257 LP |
1755 | goto fail; |
1756 | } | |
1757 | ||
1758 | rewinddir(d); | |
d617408e | 1759 | } |
a963990f LP |
1760 | |
1761 | m = hashmap_get(j->directories_by_path, p); | |
1762 | if (!m) { | |
1763 | m = new0(Directory, 1); | |
d617408e LP |
1764 | if (!m) { |
1765 | r = -ENOMEM; | |
1766 | goto fail; | |
1767 | } | |
a963990f LP |
1768 | |
1769 | m->is_root = true; | |
5d1ce257 | 1770 | |
a963990f LP |
1771 | m->path = strdup(p); |
1772 | if (!m->path) { | |
a963990f | 1773 | free(m); |
d617408e LP |
1774 | r = -ENOMEM; |
1775 | goto fail; | |
a963990f LP |
1776 | } |
1777 | ||
1778 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1779 | free(m->path); |
1780 | free(m); | |
d617408e LP |
1781 | r = -ENOMEM; |
1782 | goto fail; | |
a963990f LP |
1783 | } |
1784 | ||
313cefa1 | 1785 | j->current_invalidate_counter++; |
a963990f | 1786 | |
5ec76417 | 1787 | log_debug("Root directory %s added.", m->path); |
a963990f | 1788 | |
a50d7d43 | 1789 | } else if (!m->is_root) |
a963990f | 1790 | return 0; |
50f20cfd | 1791 | |
858749f7 LP |
1792 | directory_watch(j, m, dirfd(d), |
1793 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1794 | IN_ONLYDIR); | |
a963990f | 1795 | |
858749f7 LP |
1796 | if (!j->no_new_files) |
1797 | directory_enumerate(j, m, d); | |
3fbf9cbb | 1798 | |
85210bff LP |
1799 | check_network(j, dirfd(d)); |
1800 | ||
a963990f | 1801 | return 0; |
d617408e LP |
1802 | |
1803 | fail: | |
5768d259 | 1804 | k = journal_put_error(j, r, p); |
d617408e LP |
1805 | if (k < 0) |
1806 | return k; | |
1807 | ||
1808 | return r; | |
a963990f LP |
1809 | } |
1810 | ||
b2b46f91 | 1811 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1812 | assert(j); |
1813 | ||
1814 | if (d->wd > 0) { | |
1815 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1816 | ||
1817 | if (j->inotify_fd >= 0) | |
98d4a4df | 1818 | (void) inotify_rm_watch(j->inotify_fd, d->wd); |
a963990f LP |
1819 | } |
1820 | ||
1821 | hashmap_remove(j->directories_by_path, d->path); | |
1822 | ||
1823 | if (d->is_root) | |
5ec76417 | 1824 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1825 | else |
5ec76417 | 1826 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1827 | |
1828 | free(d->path); | |
1829 | free(d); | |
3fbf9cbb LP |
1830 | } |
1831 | ||
89739579 | 1832 | static int add_search_paths(sd_journal *j) { |
d617408e LP |
1833 | |
1834 | static const char search_paths[] = | |
a963990f LP |
1835 | "/run/log/journal\0" |
1836 | "/var/log/journal\0"; | |
1837 | const char *p; | |
50f20cfd LP |
1838 | |
1839 | assert(j); | |
50f20cfd | 1840 | |
a963990f LP |
1841 | /* We ignore most errors here, since the idea is to only open |
1842 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1843 | |
d617408e LP |
1844 | NULSTR_FOREACH(p, search_paths) |
1845 | (void) add_root_directory(j, p, true); | |
50f20cfd | 1846 | |
574b77ef MB |
1847 | if (!(j->flags & SD_JOURNAL_LOCAL_ONLY)) |
1848 | (void) add_root_directory(j, "/var/log/journal/remote", true); | |
1849 | ||
a963990f | 1850 | return 0; |
50f20cfd LP |
1851 | } |
1852 | ||
5302ebe1 | 1853 | static int add_current_paths(sd_journal *j) { |
5302ebe1 ZJS |
1854 | JournalFile *f; |
1855 | ||
1856 | assert(j); | |
1857 | assert(j->no_new_files); | |
1858 | ||
5d1ce257 | 1859 | /* Simply adds all directories for files we have open as directories. We don't expect errors here, so we |
5302ebe1 ZJS |
1860 | * treat them as fatal. */ |
1861 | ||
90e74a66 | 1862 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
c2b2df60 | 1863 | _cleanup_free_ char *dir = NULL; |
e9174f29 | 1864 | int r; |
5302ebe1 ZJS |
1865 | |
1866 | dir = dirname_malloc(f->path); | |
1867 | if (!dir) | |
1868 | return -ENOMEM; | |
1869 | ||
5d1ce257 | 1870 | r = add_directory(j, dir, NULL); |
d617408e | 1871 | if (r < 0) |
5302ebe1 | 1872 | return r; |
5302ebe1 ZJS |
1873 | } |
1874 | ||
1875 | return 0; | |
1876 | } | |
1877 | ||
a963990f | 1878 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1879 | assert(j); |
50f20cfd | 1880 | |
a963990f LP |
1881 | if (j->inotify_fd < 0) { |
1882 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
1883 | if (j->inotify_fd < 0) | |
1884 | return -errno; | |
1885 | } | |
50f20cfd | 1886 | |
cb306f5d | 1887 | return hashmap_ensure_allocated(&j->directories_by_wd, NULL); |
50f20cfd LP |
1888 | } |
1889 | ||
456aa879 | 1890 | static sd_journal *journal_new(int flags, const char *path, const char *namespace) { |
17c9aff8 | 1891 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
50f20cfd | 1892 | |
a963990f LP |
1893 | j = new0(sd_journal, 1); |
1894 | if (!j) | |
1895 | return NULL; | |
50f20cfd | 1896 | |
df0ff127 | 1897 | j->original_pid = getpid_cached(); |
5d1ce257 | 1898 | j->toplevel_fd = -1; |
a963990f LP |
1899 | j->inotify_fd = -1; |
1900 | j->flags = flags; | |
93b73b06 | 1901 | j->data_threshold = DEFAULT_DATA_THRESHOLD; |
50f20cfd | 1902 | |
7827b1a1 | 1903 | if (path) { |
16fefe90 ZJS |
1904 | char *t; |
1905 | ||
1906 | t = strdup(path); | |
1907 | if (!t) | |
17c9aff8 | 1908 | return NULL; |
16fefe90 ZJS |
1909 | |
1910 | if (flags & SD_JOURNAL_OS_ROOT) | |
1911 | j->prefix = t; | |
1912 | else | |
1913 | j->path = t; | |
7827b1a1 LP |
1914 | } |
1915 | ||
456aa879 LP |
1916 | if (namespace) { |
1917 | j->namespace = strdup(namespace); | |
1918 | if (!j->namespace) | |
1919 | return NULL; | |
1920 | } | |
1921 | ||
548f6937 | 1922 | j->files = ordered_hashmap_new(&path_hash_ops); |
5d4ba7f2 | 1923 | if (!j->files) |
17c9aff8 | 1924 | return NULL; |
5d4ba7f2 VC |
1925 | |
1926 | j->files_cache = ordered_hashmap_iterated_cache_new(j->files); | |
548f6937 | 1927 | j->directories_by_path = hashmap_new(&path_hash_ops); |
84168d80 | 1928 | j->mmap = mmap_cache_new(); |
5d4ba7f2 | 1929 | if (!j->files_cache || !j->directories_by_path || !j->mmap) |
17c9aff8 | 1930 | return NULL; |
6180fc61 | 1931 | |
17c9aff8 | 1932 | return TAKE_PTR(j); |
50f20cfd LP |
1933 | } |
1934 | ||
1aaa68f5 ZJS |
1935 | #define OPEN_ALLOWED_FLAGS \ |
1936 | (SD_JOURNAL_LOCAL_ONLY | \ | |
1937 | SD_JOURNAL_RUNTIME_ONLY | \ | |
456aa879 LP |
1938 | SD_JOURNAL_SYSTEM | \ |
1939 | SD_JOURNAL_CURRENT_USER | \ | |
1940 | SD_JOURNAL_ALL_NAMESPACES | \ | |
1941 | SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE) | |
1aaa68f5 | 1942 | |
456aa879 | 1943 | _public_ int sd_journal_open_namespace(sd_journal **ret, const char *namespace, int flags) { |
17c9aff8 | 1944 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
3fbf9cbb | 1945 | int r; |
87d2c1ff | 1946 | |
1ae464e0 | 1947 | assert_return(ret, -EINVAL); |
1aaa68f5 | 1948 | assert_return((flags & ~OPEN_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 1949 | |
456aa879 | 1950 | j = journal_new(flags, NULL, namespace); |
87d2c1ff LP |
1951 | if (!j) |
1952 | return -ENOMEM; | |
1953 | ||
89739579 | 1954 | r = add_search_paths(j); |
a963990f | 1955 | if (r < 0) |
17c9aff8 | 1956 | return r; |
50f20cfd | 1957 | |
17c9aff8 | 1958 | *ret = TAKE_PTR(j); |
a963990f | 1959 | return 0; |
a963990f | 1960 | } |
50f20cfd | 1961 | |
456aa879 LP |
1962 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
1963 | return sd_journal_open_namespace(ret, NULL, flags); | |
1964 | } | |
1965 | ||
1aaa68f5 ZJS |
1966 | #define OPEN_CONTAINER_ALLOWED_FLAGS \ |
1967 | (SD_JOURNAL_LOCAL_ONLY | SD_JOURNAL_SYSTEM) | |
1968 | ||
b6741478 LP |
1969 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
1970 | _cleanup_free_ char *root = NULL, *class = NULL; | |
17c9aff8 | 1971 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
b6741478 LP |
1972 | char *p; |
1973 | int r; | |
1974 | ||
68312977 | 1975 | /* This is deprecated, people should use machined's OpenMachineRootDirectory() call instead in |
2daa9cbd LP |
1976 | * combination with sd_journal_open_directory_fd(). */ |
1977 | ||
b6741478 LP |
1978 | assert_return(machine, -EINVAL); |
1979 | assert_return(ret, -EINVAL); | |
1aaa68f5 | 1980 | assert_return((flags & ~OPEN_CONTAINER_ALLOWED_FLAGS) == 0, -EINVAL); |
52ef5dd7 | 1981 | assert_return(hostname_is_valid(machine, 0), -EINVAL); |
b6741478 | 1982 | |
63c372cb | 1983 | p = strjoina("/run/systemd/machines/", machine); |
13df9c39 LP |
1984 | r = parse_env_file(NULL, p, |
1985 | "ROOT", &root, | |
1986 | "CLASS", &class); | |
b6741478 LP |
1987 | if (r == -ENOENT) |
1988 | return -EHOSTDOWN; | |
1989 | if (r < 0) | |
1990 | return r; | |
1991 | if (!root) | |
1992 | return -ENODATA; | |
1993 | ||
1994 | if (!streq_ptr(class, "container")) | |
1995 | return -EIO; | |
1996 | ||
456aa879 | 1997 | j = journal_new(flags, root, NULL); |
b6741478 LP |
1998 | if (!j) |
1999 | return -ENOMEM; | |
2000 | ||
89739579 | 2001 | r = add_search_paths(j); |
b6741478 | 2002 | if (r < 0) |
17c9aff8 | 2003 | return r; |
b6741478 | 2004 | |
17c9aff8 | 2005 | *ret = TAKE_PTR(j); |
b6741478 | 2006 | return 0; |
b6741478 LP |
2007 | } |
2008 | ||
1aaa68f5 | 2009 | #define OPEN_DIRECTORY_ALLOWED_FLAGS \ |
10752e82 ZJS |
2010 | (SD_JOURNAL_OS_ROOT | \ |
2011 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 2012 | |
a963990f | 2013 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
17c9aff8 | 2014 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
a963990f | 2015 | int r; |
87d2c1ff | 2016 | |
1ae464e0 TA |
2017 | assert_return(ret, -EINVAL); |
2018 | assert_return(path, -EINVAL); | |
1aaa68f5 | 2019 | assert_return((flags & ~OPEN_DIRECTORY_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 2020 | |
456aa879 | 2021 | j = journal_new(flags, path, NULL); |
a963990f LP |
2022 | if (!j) |
2023 | return -ENOMEM; | |
3fbf9cbb | 2024 | |
d077390c LP |
2025 | if (flags & SD_JOURNAL_OS_ROOT) |
2026 | r = add_search_paths(j); | |
2027 | else | |
2028 | r = add_root_directory(j, path, false); | |
d617408e | 2029 | if (r < 0) |
17c9aff8 | 2030 | return r; |
87d2c1ff | 2031 | |
17c9aff8 | 2032 | *ret = TAKE_PTR(j); |
87d2c1ff | 2033 | return 0; |
a963990f | 2034 | } |
87d2c1ff | 2035 | |
5302ebe1 | 2036 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
17c9aff8 | 2037 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5302ebe1 ZJS |
2038 | const char **path; |
2039 | int r; | |
2040 | ||
1ae464e0 TA |
2041 | assert_return(ret, -EINVAL); |
2042 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 | 2043 | |
456aa879 | 2044 | j = journal_new(flags, NULL, NULL); |
5302ebe1 ZJS |
2045 | if (!j) |
2046 | return -ENOMEM; | |
2047 | ||
2048 | STRV_FOREACH(path, paths) { | |
5d1ce257 | 2049 | r = add_any_file(j, -1, *path); |
d617408e | 2050 | if (r < 0) |
17c9aff8 | 2051 | return r; |
5302ebe1 ZJS |
2052 | } |
2053 | ||
2054 | j->no_new_files = true; | |
2055 | ||
17c9aff8 | 2056 | *ret = TAKE_PTR(j); |
5302ebe1 | 2057 | return 0; |
5d1ce257 LP |
2058 | } |
2059 | ||
1aaa68f5 | 2060 | #define OPEN_DIRECTORY_FD_ALLOWED_FLAGS \ |
10752e82 ZJS |
2061 | (SD_JOURNAL_OS_ROOT | \ |
2062 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 2063 | |
5d1ce257 | 2064 | _public_ int sd_journal_open_directory_fd(sd_journal **ret, int fd, int flags) { |
17c9aff8 | 2065 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5d1ce257 LP |
2066 | struct stat st; |
2067 | int r; | |
2068 | ||
2069 | assert_return(ret, -EINVAL); | |
2070 | assert_return(fd >= 0, -EBADF); | |
1aaa68f5 | 2071 | assert_return((flags & ~OPEN_DIRECTORY_FD_ALLOWED_FLAGS) == 0, -EINVAL); |
5d1ce257 LP |
2072 | |
2073 | if (fstat(fd, &st) < 0) | |
2074 | return -errno; | |
2075 | ||
2076 | if (!S_ISDIR(st.st_mode)) | |
2077 | return -EBADFD; | |
2078 | ||
456aa879 | 2079 | j = journal_new(flags, NULL, NULL); |
5d1ce257 LP |
2080 | if (!j) |
2081 | return -ENOMEM; | |
2082 | ||
2083 | j->toplevel_fd = fd; | |
2084 | ||
d077390c LP |
2085 | if (flags & SD_JOURNAL_OS_ROOT) |
2086 | r = add_search_paths(j); | |
2087 | else | |
2088 | r = add_root_directory(j, NULL, false); | |
5d1ce257 | 2089 | if (r < 0) |
17c9aff8 | 2090 | return r; |
5d1ce257 | 2091 | |
17c9aff8 | 2092 | *ret = TAKE_PTR(j); |
5d1ce257 | 2093 | return 0; |
5d1ce257 LP |
2094 | } |
2095 | ||
2096 | _public_ int sd_journal_open_files_fd(sd_journal **ret, int fds[], unsigned n_fds, int flags) { | |
5d1ce257 | 2097 | JournalFile *f; |
17c9aff8 | 2098 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5d1ce257 LP |
2099 | unsigned i; |
2100 | int r; | |
2101 | ||
2102 | assert_return(ret, -EINVAL); | |
2103 | assert_return(n_fds > 0, -EBADF); | |
2104 | assert_return(flags == 0, -EINVAL); | |
2105 | ||
456aa879 | 2106 | j = journal_new(flags, NULL, NULL); |
5d1ce257 LP |
2107 | if (!j) |
2108 | return -ENOMEM; | |
2109 | ||
2110 | for (i = 0; i < n_fds; i++) { | |
2111 | struct stat st; | |
2112 | ||
2113 | if (fds[i] < 0) { | |
2114 | r = -EBADF; | |
2115 | goto fail; | |
2116 | } | |
2117 | ||
2118 | if (fstat(fds[i], &st) < 0) { | |
2119 | r = -errno; | |
2120 | goto fail; | |
2121 | } | |
2122 | ||
3cc44114 LP |
2123 | r = stat_verify_regular(&st); |
2124 | if (r < 0) | |
5d1ce257 | 2125 | goto fail; |
5d1ce257 LP |
2126 | |
2127 | r = add_any_file(j, fds[i], NULL); | |
2128 | if (r < 0) | |
2129 | goto fail; | |
2130 | } | |
2131 | ||
2132 | j->no_new_files = true; | |
2133 | j->no_inotify = true; | |
5302ebe1 | 2134 | |
17c9aff8 | 2135 | *ret = TAKE_PTR(j); |
5d1ce257 LP |
2136 | return 0; |
2137 | ||
2138 | fail: | |
f8e2f4d6 | 2139 | /* If we fail, make sure we don't take possession of the files we managed to make use of successfully, and they |
5d1ce257 | 2140 | * remain open */ |
90e74a66 | 2141 | ORDERED_HASHMAP_FOREACH(f, j->files) |
5d1ce257 LP |
2142 | f->close_fd = false; |
2143 | ||
5302ebe1 ZJS |
2144 | return r; |
2145 | } | |
2146 | ||
a5344d2c | 2147 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f | 2148 | Directory *d; |
a963990f | 2149 | |
a5344d2c LP |
2150 | if (!j) |
2151 | return; | |
87d2c1ff | 2152 | |
54b1da83 LP |
2153 | sd_journal_flush_matches(j); |
2154 | ||
f9168190 | 2155 | ordered_hashmap_free_with_destructor(j->files, journal_file_close); |
5d4ba7f2 | 2156 | iterated_cache_free(j->files_cache); |
260a2be4 | 2157 | |
a963990f LP |
2158 | while ((d = hashmap_first(j->directories_by_path))) |
2159 | remove_directory(j, d); | |
260a2be4 | 2160 | |
a963990f LP |
2161 | while ((d = hashmap_first(j->directories_by_wd))) |
2162 | remove_directory(j, d); | |
87d2c1ff | 2163 | |
a963990f LP |
2164 | hashmap_free(j->directories_by_path); |
2165 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 2166 | |
03e334a1 | 2167 | safe_close(j->inotify_fd); |
50f20cfd | 2168 | |
bf807d4d | 2169 | if (j->mmap) { |
3a595c59 | 2170 | mmap_cache_stats_log_debug(j->mmap); |
16e9f408 | 2171 | mmap_cache_unref(j->mmap); |
bf807d4d | 2172 | } |
16e9f408 | 2173 | |
ec1d2909 | 2174 | hashmap_free_free(j->errors); |
5768d259 | 2175 | |
7827b1a1 | 2176 | free(j->path); |
89739579 | 2177 | free(j->prefix); |
456aa879 | 2178 | free(j->namespace); |
3c1668da | 2179 | free(j->unique_field); |
eb86030e | 2180 | free(j->fields_buffer); |
87d2c1ff LP |
2181 | free(j); |
2182 | } | |
3fbf9cbb | 2183 | |
a5344d2c | 2184 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb LP |
2185 | Object *o; |
2186 | JournalFile *f; | |
2187 | int r; | |
2188 | ||
1ae464e0 TA |
2189 | assert_return(j, -EINVAL); |
2190 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2191 | assert_return(ret, -EINVAL); | |
3fbf9cbb LP |
2192 | |
2193 | f = j->current_file; | |
2194 | if (!f) | |
de190aef | 2195 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2196 | |
2197 | if (f->current_offset <= 0) | |
de190aef | 2198 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2199 | |
de190aef | 2200 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2201 | if (r < 0) |
2202 | return r; | |
2203 | ||
2204 | *ret = le64toh(o->entry.realtime); | |
de190aef | 2205 | return 0; |
3fbf9cbb LP |
2206 | } |
2207 | ||
a5344d2c | 2208 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb LP |
2209 | Object *o; |
2210 | JournalFile *f; | |
2211 | int r; | |
3fbf9cbb | 2212 | |
1ae464e0 TA |
2213 | assert_return(j, -EINVAL); |
2214 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3fbf9cbb LP |
2215 | |
2216 | f = j->current_file; | |
2217 | if (!f) | |
de190aef | 2218 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2219 | |
2220 | if (f->current_offset <= 0) | |
de190aef | 2221 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2222 | |
de190aef | 2223 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2224 | if (r < 0) |
2225 | return r; | |
2226 | ||
de190aef LP |
2227 | if (ret_boot_id) |
2228 | *ret_boot_id = o->entry.boot_id; | |
2229 | else { | |
d4739bc4 VC |
2230 | sd_id128_t id; |
2231 | ||
de190aef LP |
2232 | r = sd_id128_get_boot(&id); |
2233 | if (r < 0) | |
2234 | return r; | |
3fbf9cbb | 2235 | |
de190aef | 2236 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 2237 | return -ESTALE; |
de190aef | 2238 | } |
3fbf9cbb | 2239 | |
14a65d65 LP |
2240 | if (ret) |
2241 | *ret = le64toh(o->entry.monotonic); | |
2242 | ||
de190aef | 2243 | return 0; |
3fbf9cbb LP |
2244 | } |
2245 | ||
362a3f81 LP |
2246 | static bool field_is_valid(const char *field) { |
2247 | const char *p; | |
2248 | ||
2249 | assert(field); | |
2250 | ||
2251 | if (isempty(field)) | |
2252 | return false; | |
2253 | ||
2254 | if (startswith(field, "__")) | |
2255 | return false; | |
2256 | ||
2257 | for (p = field; *p; p++) { | |
2258 | ||
2259 | if (*p == '_') | |
2260 | continue; | |
2261 | ||
2262 | if (*p >= 'A' && *p <= 'Z') | |
2263 | continue; | |
2264 | ||
2265 | if (*p >= '0' && *p <= '9') | |
2266 | continue; | |
2267 | ||
2268 | return false; | |
2269 | } | |
2270 | ||
2271 | return true; | |
2272 | } | |
2273 | ||
a5344d2c | 2274 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb LP |
2275 | JournalFile *f; |
2276 | uint64_t i, n; | |
2277 | size_t field_length; | |
2278 | int r; | |
2279 | Object *o; | |
2280 | ||
1ae464e0 TA |
2281 | assert_return(j, -EINVAL); |
2282 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2283 | assert_return(field, -EINVAL); | |
2284 | assert_return(data, -EINVAL); | |
2285 | assert_return(size, -EINVAL); | |
2286 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
2287 | |
2288 | f = j->current_file; | |
2289 | if (!f) | |
de190aef | 2290 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2291 | |
2292 | if (f->current_offset <= 0) | |
de190aef | 2293 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2294 | |
de190aef | 2295 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2296 | if (r < 0) |
2297 | return r; | |
2298 | ||
2299 | field_length = strlen(field); | |
2300 | ||
2301 | n = journal_file_entry_n_items(o); | |
2302 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2303 | uint64_t p, l; |
2304 | le64_t le_hash; | |
3fbf9cbb | 2305 | size_t t; |
1ec7120e | 2306 | int compression; |
3fbf9cbb LP |
2307 | |
2308 | p = le64toh(o->entry.items[i].object_offset); | |
807e17f0 | 2309 | le_hash = o->entry.items[i].hash; |
de190aef | 2310 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
3fbf9cbb LP |
2311 | if (r < 0) |
2312 | return r; | |
2313 | ||
de190aef | 2314 | if (le_hash != o->data.hash) |
de7b95cd LP |
2315 | return -EBADMSG; |
2316 | ||
3fbf9cbb LP |
2317 | l = le64toh(o->object.size) - offsetof(Object, data.payload); |
2318 | ||
1ec7120e | 2319 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
3b1a55e1 | 2320 | if (compression) { |
d80b051c | 2321 | #if HAVE_COMPRESSION |
2aaec9b4 | 2322 | r = decompress_startswith(compression, |
3b1a55e1 ZJS |
2323 | o->data.payload, l, |
2324 | &f->compress_buffer, &f->compress_buffer_size, | |
2aaec9b4 ZJS |
2325 | field, field_length, '='); |
2326 | if (r < 0) | |
82e24b00 | 2327 | log_debug_errno(r, "Cannot decompress %s object of length %"PRIu64" at offset "OFSfmt": %m", |
2aaec9b4 ZJS |
2328 | object_compressed_to_string(compression), l, p); |
2329 | else if (r > 0) { | |
3b1a55e1 | 2330 | |
fa1c4b51 | 2331 | size_t rsize; |
3b1a55e1 ZJS |
2332 | |
2333 | r = decompress_blob(compression, | |
2334 | o->data.payload, l, | |
2335 | &f->compress_buffer, &f->compress_buffer_size, &rsize, | |
2336 | j->data_threshold); | |
2337 | if (r < 0) | |
2338 | return r; | |
807e17f0 | 2339 | |
3b1a55e1 ZJS |
2340 | *data = f->compress_buffer; |
2341 | *size = (size_t) rsize; | |
807e17f0 | 2342 | |
3b1a55e1 ZJS |
2343 | return 0; |
2344 | } | |
2345 | #else | |
2346 | return -EPROTONOSUPPORT; | |
2347 | #endif | |
807e17f0 LP |
2348 | } else if (l >= field_length+1 && |
2349 | memcmp(o->data.payload, field, field_length) == 0 && | |
2350 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 2351 | |
161e54f8 | 2352 | t = (size_t) l; |
3fbf9cbb | 2353 | |
161e54f8 LP |
2354 | if ((uint64_t) t != l) |
2355 | return -E2BIG; | |
3fbf9cbb | 2356 | |
161e54f8 LP |
2357 | *data = o->data.payload; |
2358 | *size = t; | |
3fbf9cbb | 2359 | |
99613ec5 | 2360 | return 0; |
161e54f8 | 2361 | } |
3fbf9cbb | 2362 | |
de190aef | 2363 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
161e54f8 LP |
2364 | if (r < 0) |
2365 | return r; | |
3fbf9cbb LP |
2366 | } |
2367 | ||
de190aef | 2368 | return -ENOENT; |
3fbf9cbb LP |
2369 | } |
2370 | ||
93b73b06 | 2371 | static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **data, size_t *size) { |
3c1668da LP |
2372 | size_t t; |
2373 | uint64_t l; | |
3b1a55e1 | 2374 | int compression; |
3c1668da | 2375 | |
893e0f8f LP |
2376 | l = le64toh(READ_NOW(o->object.size)); |
2377 | if (l < offsetof(Object, data.payload)) | |
2378 | return -EBADMSG; | |
2379 | l -= offsetof(Object, data.payload); | |
3c1668da LP |
2380 | t = (size_t) l; |
2381 | ||
2382 | /* We can't read objects larger than 4G on a 32bit machine */ | |
2383 | if ((uint64_t) t != l) | |
2384 | return -E2BIG; | |
2385 | ||
1ec7120e ZJS |
2386 | compression = o->object.flags & OBJECT_COMPRESSION_MASK; |
2387 | if (compression) { | |
d80b051c | 2388 | #if HAVE_COMPRESSION |
fa1c4b51 | 2389 | size_t rsize; |
3b1a55e1 | 2390 | int r; |
3c1668da | 2391 | |
1ec7120e ZJS |
2392 | r = decompress_blob(compression, |
2393 | o->data.payload, l, &f->compress_buffer, | |
2394 | &f->compress_buffer_size, &rsize, j->data_threshold); | |
2395 | if (r < 0) | |
2396 | return r; | |
3c1668da LP |
2397 | |
2398 | *data = f->compress_buffer; | |
2399 | *size = (size_t) rsize; | |
3b1a55e1 ZJS |
2400 | #else |
2401 | return -EPROTONOSUPPORT; | |
2402 | #endif | |
3c1668da LP |
2403 | } else { |
2404 | *data = o->data.payload; | |
2405 | *size = t; | |
2406 | } | |
2407 | ||
2408 | return 0; | |
2409 | } | |
2410 | ||
a5344d2c | 2411 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2412 | JournalFile *f; |
3c1668da | 2413 | uint64_t p, n; |
4fd052ae | 2414 | le64_t le_hash; |
3fbf9cbb LP |
2415 | int r; |
2416 | Object *o; | |
2417 | ||
1ae464e0 TA |
2418 | assert_return(j, -EINVAL); |
2419 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2420 | assert_return(data, -EINVAL); | |
2421 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2422 | |
2423 | f = j->current_file; | |
2424 | if (!f) | |
de190aef | 2425 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2426 | |
2427 | if (f->current_offset <= 0) | |
de190aef | 2428 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2429 | |
de190aef | 2430 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2431 | if (r < 0) |
2432 | return r; | |
2433 | ||
2434 | n = journal_file_entry_n_items(o); | |
7210bfb3 | 2435 | if (j->current_field >= n) |
3fbf9cbb LP |
2436 | return 0; |
2437 | ||
7210bfb3 | 2438 | p = le64toh(o->entry.items[j->current_field].object_offset); |
de190aef LP |
2439 | le_hash = o->entry.items[j->current_field].hash; |
2440 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3fbf9cbb LP |
2441 | if (r < 0) |
2442 | return r; | |
2443 | ||
de190aef | 2444 | if (le_hash != o->data.hash) |
de7b95cd LP |
2445 | return -EBADMSG; |
2446 | ||
93b73b06 | 2447 | r = return_data(j, f, o, data, size); |
3c1668da LP |
2448 | if (r < 0) |
2449 | return r; | |
3fbf9cbb | 2450 | |
313cefa1 | 2451 | j->current_field++; |
3fbf9cbb LP |
2452 | |
2453 | return 1; | |
2454 | } | |
c2373f84 | 2455 | |
76cbafcd ZJS |
2456 | _public_ int sd_journal_enumerate_available_data(sd_journal *j, const void **data, size_t *size) { |
2457 | for (;;) { | |
2458 | int r; | |
2459 | ||
2460 | r = sd_journal_enumerate_data(j, data, size); | |
2461 | if (r >= 0) | |
2462 | return r; | |
2463 | if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r)) | |
2464 | return r; | |
2465 | j->current_field++; /* Try with the next field */ | |
2466 | } | |
2467 | } | |
2468 | ||
a5344d2c LP |
2469 | _public_ void sd_journal_restart_data(sd_journal *j) { |
2470 | if (!j) | |
2471 | return; | |
8725d60a LP |
2472 | |
2473 | j->current_field = 0; | |
c2373f84 | 2474 | } |
50f20cfd | 2475 | |
858749f7 LP |
2476 | static int reiterate_all_paths(sd_journal *j) { |
2477 | assert(j); | |
2478 | ||
2479 | if (j->no_new_files) | |
2480 | return add_current_paths(j); | |
2481 | ||
2482 | if (j->flags & SD_JOURNAL_OS_ROOT) | |
2483 | return add_search_paths(j); | |
2484 | ||
2485 | if (j->toplevel_fd >= 0) | |
2486 | return add_root_directory(j, NULL, false); | |
2487 | ||
2488 | if (j->path) | |
2489 | return add_root_directory(j, j->path, true); | |
2490 | ||
2491 | return add_search_paths(j); | |
2492 | } | |
2493 | ||
a5344d2c | 2494 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2495 | int r; |
2496 | ||
1ae464e0 TA |
2497 | assert_return(j, -EINVAL); |
2498 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2499 | |
5d1ce257 LP |
2500 | if (j->no_inotify) |
2501 | return -EMEDIUMTYPE; | |
2502 | ||
a963990f LP |
2503 | if (j->inotify_fd >= 0) |
2504 | return j->inotify_fd; | |
2505 | ||
2506 | r = allocate_inotify(j); | |
2507 | if (r < 0) | |
2508 | return r; | |
2509 | ||
858749f7 | 2510 | log_debug("Reiterating files to get inotify watches established."); |
5d1ce257 | 2511 | |
858749f7 LP |
2512 | /* Iterate through all dirs again, to add them to the inotify */ |
2513 | r = reiterate_all_paths(j); | |
a963990f LP |
2514 | if (r < 0) |
2515 | return r; | |
2516 | ||
50f20cfd LP |
2517 | return j->inotify_fd; |
2518 | } | |
2519 | ||
ee531d94 LP |
2520 | _public_ int sd_journal_get_events(sd_journal *j) { |
2521 | int fd; | |
2522 | ||
1ae464e0 TA |
2523 | assert_return(j, -EINVAL); |
2524 | assert_return(!journal_pid_changed(j), -ECHILD); | |
ee531d94 LP |
2525 | |
2526 | fd = sd_journal_get_fd(j); | |
2527 | if (fd < 0) | |
2528 | return fd; | |
2529 | ||
2530 | return POLLIN; | |
2531 | } | |
2532 | ||
39c155ea LP |
2533 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2534 | int fd; | |
2535 | ||
1ae464e0 TA |
2536 | assert_return(j, -EINVAL); |
2537 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2538 | assert_return(timeout_usec, -EINVAL); | |
39c155ea LP |
2539 | |
2540 | fd = sd_journal_get_fd(j); | |
2541 | if (fd < 0) | |
2542 | return fd; | |
2543 | ||
2544 | if (!j->on_network) { | |
f5fbe71d | 2545 | *timeout_usec = UINT64_MAX; |
39c155ea LP |
2546 | return 0; |
2547 | } | |
2548 | ||
2549 | /* If we are on the network we need to regularly check for | |
2550 | * changes manually */ | |
2551 | ||
2552 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2553 | return 1; | |
2554 | } | |
2555 | ||
858749f7 LP |
2556 | static void process_q_overflow(sd_journal *j) { |
2557 | JournalFile *f; | |
2558 | Directory *m; | |
858749f7 LP |
2559 | |
2560 | assert(j); | |
2561 | ||
2562 | /* When the inotify queue overruns we need to enumerate and re-validate all journal files to bring our list | |
2563 | * back in sync with what's on disk. For this we pick a new generation counter value. It'll be assigned to all | |
2564 | * journal files we encounter. All journal files and all directories that don't carry it after reenumeration | |
2565 | * are subject for unloading. */ | |
2566 | ||
2567 | log_debug("Inotify queue overrun, reiterating everything."); | |
2568 | ||
2569 | j->generation++; | |
2570 | (void) reiterate_all_paths(j); | |
2571 | ||
90e74a66 | 2572 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
858749f7 LP |
2573 | |
2574 | if (f->last_seen_generation == j->generation) | |
2575 | continue; | |
2576 | ||
2577 | log_debug("File '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2578 | remove_file_real(j, f); | |
2579 | } | |
2580 | ||
90e74a66 | 2581 | HASHMAP_FOREACH(m, j->directories_by_path) { |
858749f7 LP |
2582 | |
2583 | if (m->last_seen_generation == j->generation) | |
2584 | continue; | |
2585 | ||
2586 | if (m->is_root) /* Never GC root directories */ | |
2587 | continue; | |
2588 | ||
2589 | log_debug("Directory '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2590 | remove_directory(j, m); | |
2591 | } | |
2592 | ||
2593 | log_debug("Reiteration complete."); | |
2594 | } | |
2595 | ||
31e99dd2 | 2596 | static void process_inotify_event(sd_journal *j, const struct inotify_event *e) { |
a963990f | 2597 | Directory *d; |
50f20cfd LP |
2598 | |
2599 | assert(j); | |
2600 | assert(e); | |
2601 | ||
858749f7 LP |
2602 | if (e->mask & IN_Q_OVERFLOW) { |
2603 | process_q_overflow(j); | |
2604 | return; | |
2605 | } | |
2606 | ||
50f20cfd | 2607 | /* Is this a subdirectory we watch? */ |
a963990f LP |
2608 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2609 | if (d) { | |
de2c3907 LP |
2610 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2611 | (endswith(e->name, ".journal") || | |
2612 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2613 | |
2614 | /* Event for a journal file */ | |
2615 | ||
d617408e | 2616 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
fc1813c0 | 2617 | (void) add_file_by_name(j, d->path, e->name); |
d617408e | 2618 | else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) |
fc1813c0 | 2619 | remove_file_by_name(j, d->path, e->name); |
50f20cfd | 2620 | |
a963990f | 2621 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2622 | |
a963990f | 2623 | /* Event for a subdirectory */ |
50f20cfd | 2624 | |
b2b46f91 TA |
2625 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2626 | remove_directory(j, d); | |
50f20cfd | 2627 | |
a9be0692 | 2628 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && id128_is_valid(e->name)) { |
50f20cfd | 2629 | |
a963990f | 2630 | /* Event for root directory */ |
50f20cfd | 2631 | |
d617408e LP |
2632 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2633 | (void) add_directory(j, d->path, e->name); | |
50f20cfd LP |
2634 | } |
2635 | ||
2636 | return; | |
2637 | } | |
2638 | ||
2639 | if (e->mask & IN_IGNORED) | |
2640 | return; | |
2641 | ||
a9be0692 | 2642 | log_debug("Unexpected inotify event."); |
50f20cfd LP |
2643 | } |
2644 | ||
a963990f LP |
2645 | static int determine_change(sd_journal *j) { |
2646 | bool b; | |
2647 | ||
2648 | assert(j); | |
2649 | ||
2650 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2651 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2652 | ||
2653 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2654 | } | |
2655 | ||
a5344d2c | 2656 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2657 | bool got_something = false; |
50f20cfd | 2658 | |
1ae464e0 TA |
2659 | assert_return(j, -EINVAL); |
2660 | assert_return(!journal_pid_changed(j), -ECHILD); | |
50f20cfd | 2661 | |
10c4d640 LP |
2662 | if (j->inotify_fd < 0) /* We have no inotify fd yet? Then there's noting to process. */ |
2663 | return 0; | |
2664 | ||
39c155ea | 2665 | j->last_process_usec = now(CLOCK_MONOTONIC); |
f9346444 | 2666 | j->last_invalidate_counter = j->current_invalidate_counter; |
39c155ea | 2667 | |
50f20cfd | 2668 | for (;;) { |
0254e944 | 2669 | union inotify_event_buffer buffer; |
50f20cfd LP |
2670 | struct inotify_event *e; |
2671 | ssize_t l; | |
2672 | ||
0254e944 | 2673 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2674 | if (l < 0) { |
3742095b | 2675 | if (IN_SET(errno, EAGAIN, EINTR)) |
a963990f | 2676 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; |
50f20cfd LP |
2677 | |
2678 | return -errno; | |
2679 | } | |
2680 | ||
a963990f LP |
2681 | got_something = true; |
2682 | ||
f7c1ad4f | 2683 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2684 | process_inotify_event(j, e); |
50f20cfd LP |
2685 | } |
2686 | } | |
6ad1d1c3 | 2687 | |
e02d1cf7 | 2688 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2689 | int r; |
39c155ea | 2690 | uint64_t t; |
e02d1cf7 | 2691 | |
1ae464e0 TA |
2692 | assert_return(j, -EINVAL); |
2693 | assert_return(!journal_pid_changed(j), -ECHILD); | |
e02d1cf7 | 2694 | |
a963990f | 2695 | if (j->inotify_fd < 0) { |
28ca867a | 2696 | JournalFile *f; |
a963990f LP |
2697 | |
2698 | /* This is the first invocation, hence create the | |
2699 | * inotify watch */ | |
2700 | r = sd_journal_get_fd(j); | |
2701 | if (r < 0) | |
2702 | return r; | |
2703 | ||
28ca867a MS |
2704 | /* Server might have done some vacuuming while we weren't watching. |
2705 | Get rid of the deleted files now so they don't stay around indefinitely. */ | |
90e74a66 | 2706 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
28ca867a | 2707 | r = journal_file_fstat(f); |
8581b9f9 MS |
2708 | if (r == -EIDRM) |
2709 | remove_file_real(j, f); | |
2710 | else if (r < 0) { | |
28ca867a MS |
2711 | log_debug_errno(r,"Failed to fstat() journal file '%s' : %m", f->path); |
2712 | continue; | |
2713 | } | |
28ca867a MS |
2714 | } |
2715 | ||
a963990f LP |
2716 | /* The journal might have changed since the context |
2717 | * object was created and we weren't watching before, | |
2718 | * hence don't wait for anything, and return | |
2719 | * immediately. */ | |
2720 | return determine_change(j); | |
2721 | } | |
2722 | ||
39c155ea LP |
2723 | r = sd_journal_get_timeout(j, &t); |
2724 | if (r < 0) | |
2725 | return r; | |
2726 | ||
f5fbe71d | 2727 | if (t != UINT64_MAX) { |
496db330 | 2728 | t = usec_sub_unsigned(t, now(CLOCK_MONOTONIC)); |
85210bff | 2729 | |
f5fbe71d | 2730 | if (timeout_usec == UINT64_MAX || timeout_usec > t) |
39c155ea | 2731 | timeout_usec = t; |
85210bff LP |
2732 | } |
2733 | ||
a963990f LP |
2734 | do { |
2735 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2736 | } while (r == -EINTR); | |
e02d1cf7 LP |
2737 | |
2738 | if (r < 0) | |
2739 | return r; | |
2740 | ||
a963990f | 2741 | return sd_journal_process(j); |
e02d1cf7 LP |
2742 | } |
2743 | ||
08984293 | 2744 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
08984293 LP |
2745 | JournalFile *f; |
2746 | bool first = true; | |
581483bf | 2747 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
2748 | int r; |
2749 | ||
1ae464e0 TA |
2750 | assert_return(j, -EINVAL); |
2751 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2752 | assert_return(from || to, -EINVAL); | |
2753 | assert_return(from != to, -EINVAL); | |
08984293 | 2754 | |
90e74a66 | 2755 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
08984293 LP |
2756 | usec_t fr, t; |
2757 | ||
2758 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
2759 | if (r == -ENOENT) |
2760 | continue; | |
08984293 LP |
2761 | if (r < 0) |
2762 | return r; | |
2763 | if (r == 0) | |
2764 | continue; | |
2765 | ||
2766 | if (first) { | |
581483bf LP |
2767 | fmin = fr; |
2768 | tmax = t; | |
08984293 LP |
2769 | first = false; |
2770 | } else { | |
581483bf LP |
2771 | fmin = MIN(fr, fmin); |
2772 | tmax = MAX(t, tmax); | |
08984293 LP |
2773 | } |
2774 | } | |
2775 | ||
581483bf LP |
2776 | if (from) |
2777 | *from = fmin; | |
2778 | if (to) | |
2779 | *to = tmax; | |
2780 | ||
08984293 LP |
2781 | return first ? 0 : 1; |
2782 | } | |
2783 | ||
2784 | _public_ int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t *from, uint64_t *to) { | |
08984293 | 2785 | JournalFile *f; |
1651e2c6 | 2786 | bool found = false; |
08984293 LP |
2787 | int r; |
2788 | ||
1ae464e0 TA |
2789 | assert_return(j, -EINVAL); |
2790 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2791 | assert_return(from || to, -EINVAL); | |
2792 | assert_return(from != to, -EINVAL); | |
08984293 | 2793 | |
90e74a66 | 2794 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
08984293 LP |
2795 | usec_t fr, t; |
2796 | ||
2797 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &fr, &t); | |
9f8d2983 LP |
2798 | if (r == -ENOENT) |
2799 | continue; | |
08984293 LP |
2800 | if (r < 0) |
2801 | return r; | |
2802 | if (r == 0) | |
2803 | continue; | |
2804 | ||
1651e2c6 | 2805 | if (found) { |
08984293 | 2806 | if (from) |
1651e2c6 | 2807 | *from = MIN(fr, *from); |
08984293 | 2808 | if (to) |
1651e2c6 | 2809 | *to = MAX(t, *to); |
08984293 LP |
2810 | } else { |
2811 | if (from) | |
1651e2c6 | 2812 | *from = fr; |
08984293 | 2813 | if (to) |
1651e2c6 ZJS |
2814 | *to = t; |
2815 | found = true; | |
08984293 LP |
2816 | } |
2817 | } | |
2818 | ||
1651e2c6 | 2819 | return found; |
08984293 LP |
2820 | } |
2821 | ||
dca6219e | 2822 | void journal_print_header(sd_journal *j) { |
dca6219e LP |
2823 | JournalFile *f; |
2824 | bool newline = false; | |
2825 | ||
2826 | assert(j); | |
2827 | ||
90e74a66 | 2828 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
dca6219e LP |
2829 | if (newline) |
2830 | putchar('\n'); | |
2831 | else | |
2832 | newline = true; | |
2833 | ||
2834 | journal_file_print_header(f); | |
2835 | } | |
2836 | } | |
08984293 | 2837 | |
a1a03e30 | 2838 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *bytes) { |
a1a03e30 LP |
2839 | JournalFile *f; |
2840 | uint64_t sum = 0; | |
2841 | ||
1ae464e0 TA |
2842 | assert_return(j, -EINVAL); |
2843 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2844 | assert_return(bytes, -EINVAL); | |
a1a03e30 | 2845 | |
90e74a66 | 2846 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
a1a03e30 LP |
2847 | struct stat st; |
2848 | ||
2849 | if (fstat(f->fd, &st) < 0) | |
2850 | return -errno; | |
2851 | ||
2852 | sum += (uint64_t) st.st_blocks * 512ULL; | |
2853 | } | |
2854 | ||
2855 | *bytes = sum; | |
2856 | return 0; | |
2857 | } | |
2858 | ||
3c1668da LP |
2859 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
2860 | char *f; | |
2861 | ||
1ae464e0 TA |
2862 | assert_return(j, -EINVAL); |
2863 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2864 | assert_return(!isempty(field), -EINVAL); | |
2865 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da LP |
2866 | |
2867 | f = strdup(field); | |
2868 | if (!f) | |
2869 | return -ENOMEM; | |
2870 | ||
2871 | free(j->unique_field); | |
2872 | j->unique_field = f; | |
2873 | j->unique_file = NULL; | |
2874 | j->unique_offset = 0; | |
360af4cf | 2875 | j->unique_file_lost = false; |
3c1668da LP |
2876 | |
2877 | return 0; | |
2878 | } | |
2879 | ||
2880 | _public_ int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l) { | |
3c1668da | 2881 | size_t k; |
19a2bd80 | 2882 | |
1ae464e0 TA |
2883 | assert_return(j, -EINVAL); |
2884 | assert_return(!journal_pid_changed(j), -ECHILD); | |
2885 | assert_return(data, -EINVAL); | |
2886 | assert_return(l, -EINVAL); | |
2887 | assert_return(j->unique_field, -EINVAL); | |
19a2bd80 | 2888 | |
3c1668da | 2889 | k = strlen(j->unique_field); |
19a2bd80 | 2890 | |
3c1668da | 2891 | if (!j->unique_file) { |
360af4cf ZJS |
2892 | if (j->unique_file_lost) |
2893 | return 0; | |
2894 | ||
c1f906bd | 2895 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
2896 | if (!j->unique_file) |
2897 | return 0; | |
360af4cf | 2898 | |
3c1668da LP |
2899 | j->unique_offset = 0; |
2900 | } | |
19a2bd80 | 2901 | |
3c1668da LP |
2902 | for (;;) { |
2903 | JournalFile *of; | |
ae97089d | 2904 | Object *o; |
3c1668da LP |
2905 | const void *odata; |
2906 | size_t ol; | |
2907 | bool found; | |
ae97089d | 2908 | int r; |
3c1668da | 2909 | |
bdc02927 | 2910 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
2911 | if (j->unique_offset == 0) { |
2912 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
2913 | if (r < 0) | |
2914 | return r; | |
2915 | ||
2916 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
2917 | } else { | |
2918 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
2919 | if (r < 0) | |
2920 | return r; | |
2921 | ||
2922 | j->unique_offset = le64toh(o->data.next_field_offset); | |
2923 | } | |
2924 | ||
2925 | /* We reached the end of the list? Then start again, with the next file */ | |
2926 | if (j->unique_offset == 0) { | |
c1f906bd | 2927 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 2928 | if (!j->unique_file) |
3c1668da LP |
2929 | return 0; |
2930 | ||
3c1668da LP |
2931 | continue; |
2932 | } | |
2933 | ||
d05089d8 MS |
2934 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
2935 | * instead, so that we can look at this data object at the same | |
3c1668da | 2936 | * time as one on another file */ |
d05089d8 | 2937 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
2938 | if (r < 0) |
2939 | return r; | |
2940 | ||
2941 | /* Let's do the type check by hand, since we used 0 context above. */ | |
baaa35ad ZJS |
2942 | if (o->object.type != OBJECT_DATA) |
2943 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
2944 | "%s:offset " OFSfmt ": object has type %d, expected %d", | |
2945 | j->unique_file->path, | |
2946 | j->unique_offset, | |
2947 | o->object.type, OBJECT_DATA); | |
ae97089d | 2948 | |
93b73b06 | 2949 | r = return_data(j, j->unique_file, o, &odata, &ol); |
3c1668da LP |
2950 | if (r < 0) |
2951 | return r; | |
2952 | ||
0f99f74a | 2953 | /* Check if we have at least the field name and "=". */ |
baaa35ad ZJS |
2954 | if (ol <= k) |
2955 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
2956 | "%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
2957 | j->unique_file->path, | |
2958 | j->unique_offset, ol, k + 1); | |
2959 | ||
2960 | if (memcmp(odata, j->unique_field, k) || ((const char*) odata)[k] != '=') | |
2961 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
2962 | "%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
2963 | j->unique_file->path, | |
2964 | j->unique_offset, | |
2965 | j->unique_field); | |
0f99f74a | 2966 | |
3c1668da LP |
2967 | /* OK, now let's see if we already returned this data |
2968 | * object by checking if it exists in the earlier | |
2969 | * traversed files. */ | |
2970 | found = false; | |
90e74a66 | 2971 | ORDERED_HASHMAP_FOREACH(of, j->files) { |
3c1668da LP |
2972 | if (of == j->unique_file) |
2973 | break; | |
2974 | ||
ed71f956 LP |
2975 | /* Skip this file it didn't have any fields indexed */ |
2976 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3c1668da LP |
2977 | continue; |
2978 | ||
ed71f956 | 2979 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), NULL, NULL); |
3c1668da LP |
2980 | if (r < 0) |
2981 | return r; | |
ed71f956 | 2982 | if (r > 0) { |
3c1668da | 2983 | found = true; |
ed71f956 LP |
2984 | break; |
2985 | } | |
3c1668da LP |
2986 | } |
2987 | ||
06cc69d4 JJ |
2988 | if (found) |
2989 | continue; | |
2990 | ||
93b73b06 | 2991 | r = return_data(j, j->unique_file, o, data, l); |
3c1668da LP |
2992 | if (r < 0) |
2993 | return r; | |
2994 | ||
2995 | return 1; | |
2996 | } | |
2997 | } | |
2998 | ||
76cbafcd ZJS |
2999 | _public_ int sd_journal_enumerate_available_unique(sd_journal *j, const void **data, size_t *size) { |
3000 | for (;;) { | |
3001 | int r; | |
3002 | ||
3003 | r = sd_journal_enumerate_unique(j, data, size); | |
3004 | if (r >= 0) | |
3005 | return r; | |
3006 | if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r)) | |
3007 | return r; | |
3008 | /* Try with the next field. sd_journal_enumerate_unique() modifies state, so on the next try | |
3009 | * we will access the next field. */ | |
3010 | } | |
3011 | } | |
3012 | ||
115646c7 | 3013 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
3c1668da LP |
3014 | if (!j) |
3015 | return; | |
3016 | ||
3017 | j->unique_file = NULL; | |
3018 | j->unique_offset = 0; | |
360af4cf | 3019 | j->unique_file_lost = false; |
3c1668da | 3020 | } |
85210bff | 3021 | |
eb86030e LP |
3022 | _public_ int sd_journal_enumerate_fields(sd_journal *j, const char **field) { |
3023 | int r; | |
3024 | ||
3025 | assert_return(j, -EINVAL); | |
3026 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3027 | assert_return(field, -EINVAL); | |
3028 | ||
3029 | if (!j->fields_file) { | |
3030 | if (j->fields_file_lost) | |
3031 | return 0; | |
3032 | ||
3033 | j->fields_file = ordered_hashmap_first(j->files); | |
3034 | if (!j->fields_file) | |
3035 | return 0; | |
3036 | ||
3037 | j->fields_hash_table_index = 0; | |
3038 | j->fields_offset = 0; | |
3039 | } | |
3040 | ||
3041 | for (;;) { | |
3042 | JournalFile *f, *of; | |
eb86030e LP |
3043 | uint64_t m; |
3044 | Object *o; | |
3045 | size_t sz; | |
3046 | bool found; | |
3047 | ||
3048 | f = j->fields_file; | |
3049 | ||
3050 | if (j->fields_offset == 0) { | |
3051 | bool eof = false; | |
3052 | ||
3053 | /* We are not yet positioned at any field. Let's pick the first one */ | |
3054 | r = journal_file_map_field_hash_table(f); | |
3055 | if (r < 0) | |
3056 | return r; | |
3057 | ||
3058 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); | |
3059 | for (;;) { | |
3060 | if (j->fields_hash_table_index >= m) { | |
3061 | /* Reached the end of the hash table, go to the next file. */ | |
3062 | eof = true; | |
3063 | break; | |
3064 | } | |
3065 | ||
3066 | j->fields_offset = le64toh(f->field_hash_table[j->fields_hash_table_index].head_hash_offset); | |
3067 | ||
3068 | if (j->fields_offset != 0) | |
3069 | break; | |
3070 | ||
3071 | /* Empty hash table bucket, go to next one */ | |
3072 | j->fields_hash_table_index++; | |
3073 | } | |
3074 | ||
3075 | if (eof) { | |
3076 | /* Proceed with next file */ | |
3077 | j->fields_file = ordered_hashmap_next(j->files, f->path); | |
3078 | if (!j->fields_file) { | |
3079 | *field = NULL; | |
3080 | return 0; | |
3081 | } | |
3082 | ||
3083 | j->fields_offset = 0; | |
3084 | j->fields_hash_table_index = 0; | |
3085 | continue; | |
3086 | } | |
3087 | ||
3088 | } else { | |
3089 | /* We are already positioned at a field. If so, let's figure out the next field from it */ | |
3090 | ||
3091 | r = journal_file_move_to_object(f, OBJECT_FIELD, j->fields_offset, &o); | |
3092 | if (r < 0) | |
3093 | return r; | |
3094 | ||
3095 | j->fields_offset = le64toh(o->field.next_hash_offset); | |
3096 | if (j->fields_offset == 0) { | |
3097 | /* Reached the end of the hash table chain */ | |
3098 | j->fields_hash_table_index++; | |
3099 | continue; | |
3100 | } | |
3101 | } | |
3102 | ||
1f133e0d | 3103 | /* We use OBJECT_UNUSED here, so that the iterator below doesn't remove our mmap window */ |
eb86030e LP |
3104 | r = journal_file_move_to_object(f, OBJECT_UNUSED, j->fields_offset, &o); |
3105 | if (r < 0) | |
3106 | return r; | |
3107 | ||
3108 | /* Because we used OBJECT_UNUSED above, we need to do our type check manually */ | |
baaa35ad ZJS |
3109 | if (o->object.type != OBJECT_FIELD) |
3110 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
3111 | "%s:offset " OFSfmt ": object has type %i, expected %i", | |
3112 | f->path, j->fields_offset, | |
3113 | o->object.type, OBJECT_FIELD); | |
eb86030e LP |
3114 | |
3115 | sz = le64toh(o->object.size) - offsetof(Object, field.payload); | |
3116 | ||
3117 | /* Let's see if we already returned this field name before. */ | |
3118 | found = false; | |
90e74a66 | 3119 | ORDERED_HASHMAP_FOREACH(of, j->files) { |
eb86030e LP |
3120 | if (of == f) |
3121 | break; | |
3122 | ||
3123 | /* Skip this file it didn't have any fields indexed */ | |
3124 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3125 | continue; | |
3126 | ||
3127 | r = journal_file_find_field_object_with_hash(of, o->field.payload, sz, le64toh(o->field.hash), NULL, NULL); | |
3128 | if (r < 0) | |
3129 | return r; | |
3130 | if (r > 0) { | |
3131 | found = true; | |
3132 | break; | |
3133 | } | |
3134 | } | |
3135 | ||
3136 | if (found) | |
3137 | continue; | |
3138 | ||
3139 | /* Check if this is really a valid string containing no NUL byte */ | |
3140 | if (memchr(o->field.payload, 0, sz)) | |
3141 | return -EBADMSG; | |
3142 | ||
3143 | if (sz > j->data_threshold) | |
3144 | sz = j->data_threshold; | |
3145 | ||
3146 | if (!GREEDY_REALLOC(j->fields_buffer, j->fields_buffer_allocated, sz + 1)) | |
3147 | return -ENOMEM; | |
3148 | ||
3149 | memcpy(j->fields_buffer, o->field.payload, sz); | |
3150 | j->fields_buffer[sz] = 0; | |
3151 | ||
3152 | if (!field_is_valid(j->fields_buffer)) | |
3153 | return -EBADMSG; | |
3154 | ||
3155 | *field = j->fields_buffer; | |
3156 | return 1; | |
3157 | } | |
3158 | } | |
3159 | ||
3160 | _public_ void sd_journal_restart_fields(sd_journal *j) { | |
3161 | if (!j) | |
3162 | return; | |
3163 | ||
3164 | j->fields_file = NULL; | |
3165 | j->fields_hash_table_index = 0; | |
3166 | j->fields_offset = 0; | |
3167 | j->fields_file_lost = false; | |
3168 | } | |
3169 | ||
85210bff | 3170 | _public_ int sd_journal_reliable_fd(sd_journal *j) { |
1ae464e0 TA |
3171 | assert_return(j, -EINVAL); |
3172 | assert_return(!journal_pid_changed(j), -ECHILD); | |
85210bff LP |
3173 | |
3174 | return !j->on_network; | |
3175 | } | |
d4205751 LP |
3176 | |
3177 | static char *lookup_field(const char *field, void *userdata) { | |
3178 | sd_journal *j = userdata; | |
3179 | const void *data; | |
3180 | size_t size, d; | |
3181 | int r; | |
3182 | ||
3183 | assert(field); | |
3184 | assert(j); | |
3185 | ||
3186 | r = sd_journal_get_data(j, field, &data, &size); | |
3187 | if (r < 0 || | |
3188 | size > REPLACE_VAR_MAX) | |
3189 | return strdup(field); | |
3190 | ||
3191 | d = strlen(field) + 1; | |
3192 | ||
3193 | return strndup((const char*) data + d, size - d); | |
3194 | } | |
3195 | ||
3196 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
3197 | const void *data; | |
3198 | size_t size; | |
3199 | sd_id128_t id; | |
3200 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
3201 | char *t; | |
3202 | int r; | |
3203 | ||
1ae464e0 TA |
3204 | assert_return(j, -EINVAL); |
3205 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3206 | assert_return(ret, -EINVAL); | |
d4205751 LP |
3207 | |
3208 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
3209 | if (r < 0) | |
3210 | return r; | |
3211 | ||
3212 | cid = strndup((const char*) data + 11, size - 11); | |
3213 | if (!cid) | |
3214 | return -ENOMEM; | |
3215 | ||
3216 | r = sd_id128_from_string(cid, &id); | |
3217 | if (r < 0) | |
3218 | return r; | |
3219 | ||
844ec79b | 3220 | r = catalog_get(CATALOG_DATABASE, id, &text); |
d4205751 LP |
3221 | if (r < 0) |
3222 | return r; | |
3223 | ||
3224 | t = replace_var(text, lookup_field, j); | |
3225 | if (!t) | |
3226 | return -ENOMEM; | |
3227 | ||
3228 | *ret = t; | |
3229 | return 0; | |
3230 | } | |
8f1e860f LP |
3231 | |
3232 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 3233 | assert_return(ret, -EINVAL); |
8f1e860f | 3234 | |
844ec79b | 3235 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 3236 | } |
93b73b06 LP |
3237 | |
3238 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 TA |
3239 | assert_return(j, -EINVAL); |
3240 | assert_return(!journal_pid_changed(j), -ECHILD); | |
93b73b06 LP |
3241 | |
3242 | j->data_threshold = sz; | |
3243 | return 0; | |
3244 | } | |
3245 | ||
3246 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 TA |
3247 | assert_return(j, -EINVAL); |
3248 | assert_return(!journal_pid_changed(j), -ECHILD); | |
3249 | assert_return(sz, -EINVAL); | |
93b73b06 LP |
3250 | |
3251 | *sz = j->data_threshold; | |
3252 | return 0; | |
3253 | } | |
39fd5b08 JS |
3254 | |
3255 | _public_ int sd_journal_has_runtime_files(sd_journal *j) { | |
3256 | assert_return(j, -EINVAL); | |
3257 | ||
3258 | return j->has_runtime_files; | |
3259 | } | |
3260 | ||
3261 | _public_ int sd_journal_has_persistent_files(sd_journal *j) { | |
3262 | assert_return(j, -EINVAL); | |
3263 | ||
3264 | return j->has_persistent_files; | |
3265 | } |