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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
87d2c1ff | 2 | |
87d2c1ff | 3 | #include <errno.h> |
87d2c1ff | 4 | #include <fcntl.h> |
82e24b00 | 5 | #include <inttypes.h> |
07630cea LP |
6 | #include <linux/magic.h> |
7 | #include <poll.h> | |
3fbf9cbb | 8 | #include <stddef.h> |
50f20cfd | 9 | #include <sys/inotify.h> |
85210bff | 10 | #include <sys/vfs.h> |
07630cea | 11 | #include <unistd.h> |
87d2c1ff LP |
12 | |
13 | #include "sd-journal.h" | |
c004493c | 14 | |
b5efdb8a | 15 | #include "alloc-util.h" |
07630cea LP |
16 | #include "catalog.h" |
17 | #include "compress.h" | |
a0956174 | 18 | #include "dirent-util.h" |
686d13b9 | 19 | #include "env-file.h" |
9e8b1ec0 | 20 | #include "escape.h" |
3ffd4af2 | 21 | #include "fd-util.h" |
07630cea | 22 | #include "fileio.h" |
f97b34a6 | 23 | #include "format-util.h" |
77601719 | 24 | #include "fs-util.h" |
07630cea LP |
25 | #include "hashmap.h" |
26 | #include "hostname-util.h" | |
a9be0692 | 27 | #include "id128-util.h" |
9e5fd717 | 28 | #include "inotify-util.h" |
c004493c | 29 | #include "io-util.h" |
87d2c1ff | 30 | #include "journal-def.h" |
cec736d2 | 31 | #include "journal-file.h" |
07630cea | 32 | #include "journal-internal.h" |
cec736d2 | 33 | #include "list.h" |
de7b95cd | 34 | #include "lookup3.h" |
d8b4d14d | 35 | #include "nulstr-util.h" |
e046719b | 36 | #include "origin-id.h" |
07630cea | 37 | #include "path-util.h" |
34af7494 | 38 | #include "prioq.h" |
dccca82b | 39 | #include "process-util.h" |
d4205751 | 40 | #include "replace-var.h" |
15a5e950 LP |
41 | #include "stat-util.h" |
42 | #include "stdio-util.h" | |
07630cea LP |
43 | #include "string-util.h" |
44 | #include "strv.h" | |
456aa879 | 45 | #include "syslog-util.h" |
97c621b7 | 46 | #include "uid-alloc-range.h" |
87d2c1ff | 47 | |
85210bff LP |
48 | #define JOURNAL_FILES_RECHECK_USEC (2 * USEC_PER_SEC) |
49 | ||
8dd7cbce LP |
50 | /* The maximum size of variable values we'll expand in catalog entries. We bind this to PATH_MAX for now, as |
51 | * we want to be able to show all officially valid paths at least */ | |
52 | #define REPLACE_VAR_MAX PATH_MAX | |
d4205751 | 53 | |
93b73b06 LP |
54 | #define DEFAULT_DATA_THRESHOLD (64*1024) |
55 | ||
e046719b LB |
56 | DEFINE_PRIVATE_ORIGIN_ID_HELPERS(sd_journal, journal); |
57 | ||
a9a245c1 | 58 | static void remove_file_real(sd_journal *j, JournalFile *f); |
34af7494 LP |
59 | static int journal_file_read_tail_timestamp(sd_journal *j, JournalFile *f); |
60 | static void journal_file_unlink_newest_by_bood_id(sd_journal *j, JournalFile *f); | |
a9a245c1 | 61 | |
5768d259 | 62 | static int journal_put_error(sd_journal *j, int r, const char *path) { |
8231485b | 63 | _cleanup_free_ char *copy = NULL; |
3ac251b8 LP |
64 | int k; |
65 | ||
5768d259 LP |
66 | /* Memorize an error we encountered, and store which |
67 | * file/directory it was generated from. Note that we store | |
68 | * only *one* path per error code, as the error code is the | |
69 | * key into the hashmap, and the path is the value. This means | |
70 | * we keep track only of all error kinds, but not of all error | |
71 | * locations. This has the benefit that the hashmap cannot | |
72 | * grow beyond bounds. | |
73 | * | |
74 | * We return an error here only if we didn't manage to | |
75 | * memorize the real error. */ | |
76 | ||
6fe391c5 ZJS |
77 | if (r >= 0) |
78 | return r; | |
79 | ||
5768d259 LP |
80 | if (path) { |
81 | copy = strdup(path); | |
82 | if (!copy) | |
83 | return -ENOMEM; | |
8231485b | 84 | } |
5768d259 | 85 | |
faa7e5a4 | 86 | k = hashmap_ensure_put(&j->errors, NULL, INT_TO_PTR(r), copy); |
5768d259 | 87 | if (k < 0) { |
5768d259 LP |
88 | if (k == -EEXIST) |
89 | return 0; | |
90 | ||
91 | return k; | |
92 | } | |
93 | ||
8231485b | 94 | TAKE_PTR(copy); |
5768d259 | 95 | return 0; |
6fe391c5 ZJS |
96 | } |
97 | ||
de190aef | 98 | static void detach_location(sd_journal *j) { |
8f9b6cd9 LP |
99 | JournalFile *f; |
100 | ||
101 | assert(j); | |
102 | ||
103 | j->current_file = NULL; | |
104 | j->current_field = 0; | |
105 | ||
90e74a66 | 106 | ORDERED_HASHMAP_FOREACH(f, j->files) |
1fc605b0 | 107 | journal_file_reset_location(f); |
8f9b6cd9 LP |
108 | } |
109 | ||
a87247dd | 110 | static void init_location(Location *l, LocationType type, JournalFile *f, Object *o) { |
de190aef | 111 | assert(l); |
3742095b | 112 | assert(IN_SET(type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef | 113 | assert(f); |
de190aef | 114 | |
bba6e4ae LP |
115 | *l = (Location) { |
116 | .type = type, | |
117 | .seqnum = le64toh(o->entry.seqnum), | |
118 | .seqnum_id = f->header->seqnum_id, | |
119 | .realtime = le64toh(o->entry.realtime), | |
120 | .monotonic = le64toh(o->entry.monotonic), | |
121 | .boot_id = o->entry.boot_id, | |
122 | .xor_hash = le64toh(o->entry.xor_hash), | |
123 | .seqnum_set = true, | |
124 | .realtime_set = true, | |
125 | .monotonic_set = true, | |
126 | .xor_hash_set = true, | |
127 | }; | |
de190aef LP |
128 | } |
129 | ||
1eb6332d | 130 | static void set_location(sd_journal *j, JournalFile *f, Object *o) { |
de190aef LP |
131 | assert(j); |
132 | assert(f); | |
133 | assert(o); | |
134 | ||
1eb6332d | 135 | init_location(&j->current_location, LOCATION_DISCRETE, f, o); |
de190aef LP |
136 | |
137 | j->current_file = f; | |
138 | j->current_field = 0; | |
139 | ||
6573ef05 MS |
140 | /* Let f know its candidate entry was picked. */ |
141 | assert(f->location_type == LOCATION_SEEK); | |
142 | f->location_type = LOCATION_DISCRETE; | |
de190aef LP |
143 | } |
144 | ||
cbdca852 | 145 | static int match_is_valid(const void *data, size_t size) { |
99534007 | 146 | const char *b = ASSERT_PTR(data); |
cbdca852 LP |
147 | |
148 | if (size < 2) | |
149 | return false; | |
150 | ||
e0567bc8 | 151 | if (((char*) data)[0] == '_' && ((char*) data)[1] == '_') |
cbdca852 LP |
152 | return false; |
153 | ||
abcdc02c | 154 | for (const char *p = b; p < b + size; p++) { |
cbdca852 LP |
155 | |
156 | if (*p == '=') | |
157 | return p > b; | |
158 | ||
159 | if (*p == '_') | |
160 | continue; | |
161 | ||
162 | if (*p >= 'A' && *p <= 'Z') | |
163 | continue; | |
164 | ||
ff25d338 | 165 | if (ascii_isdigit(*p)) |
cbdca852 LP |
166 | continue; |
167 | ||
168 | return false; | |
169 | } | |
170 | ||
171 | return false; | |
172 | } | |
173 | ||
174 | static bool same_field(const void *_a, size_t s, const void *_b, size_t t) { | |
de190aef | 175 | const uint8_t *a = _a, *b = _b; |
de190aef | 176 | |
abcdc02c | 177 | for (size_t j = 0; j < s && j < t; j++) { |
de190aef | 178 | |
de190aef | 179 | if (a[j] != b[j]) |
cbdca852 | 180 | return false; |
de190aef | 181 | |
cbdca852 LP |
182 | if (a[j] == '=') |
183 | return true; | |
de190aef LP |
184 | } |
185 | ||
04499a70 | 186 | assert_not_reached(); |
cbdca852 LP |
187 | } |
188 | ||
189 | static Match *match_new(Match *p, MatchType t) { | |
190 | Match *m; | |
191 | ||
2f5435a1 | 192 | m = new(Match, 1); |
cbdca852 LP |
193 | if (!m) |
194 | return NULL; | |
195 | ||
2f5435a1 LP |
196 | *m = (Match) { |
197 | .type = t, | |
198 | .parent = p, | |
199 | }; | |
cbdca852 | 200 | |
2f5435a1 | 201 | if (p) |
71fda00f | 202 | LIST_PREPEND(matches, p->matches, m); |
cbdca852 LP |
203 | |
204 | return m; | |
205 | } | |
206 | ||
39dfc0de | 207 | static Match *match_free(Match *m) { |
cbdca852 LP |
208 | assert(m); |
209 | ||
210 | while (m->matches) | |
211 | match_free(m->matches); | |
212 | ||
213 | if (m->parent) | |
71fda00f | 214 | LIST_REMOVE(matches, m->parent->matches, m); |
cbdca852 LP |
215 | |
216 | free(m->data); | |
39dfc0de | 217 | return mfree(m); |
cbdca852 LP |
218 | } |
219 | ||
39dfc0de | 220 | static Match *match_free_if_empty(Match *m) { |
c5a10d9c | 221 | if (!m || m->matches) |
39dfc0de | 222 | return m; |
cbdca852 | 223 | |
39dfc0de | 224 | return match_free(m); |
de190aef LP |
225 | } |
226 | ||
a5344d2c | 227 | _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size) { |
03677889 | 228 | Match *add_here = NULL, *m = NULL; |
cde8c5f7 | 229 | uint64_t hash; |
87d2c1ff | 230 | |
1ae464e0 | 231 | assert_return(j, -EINVAL); |
e046719b | 232 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 | 233 | assert_return(data, -EINVAL); |
cbdca852 LP |
234 | |
235 | if (size == 0) | |
236 | size = strlen(data); | |
237 | ||
1ae464e0 | 238 | assert_return(match_is_valid(data, size), -EINVAL); |
1cc101f1 | 239 | |
cd34b3c6 HH |
240 | /* level 0: AND term |
241 | * level 1: OR terms | |
242 | * level 2: AND terms | |
243 | * level 3: OR terms | |
244 | * level 4: concrete matches */ | |
cbdca852 LP |
245 | |
246 | if (!j->level0) { | |
cd34b3c6 | 247 | j->level0 = match_new(NULL, MATCH_AND_TERM); |
cbdca852 LP |
248 | if (!j->level0) |
249 | return -ENOMEM; | |
250 | } | |
251 | ||
252 | if (!j->level1) { | |
cd34b3c6 | 253 | j->level1 = match_new(j->level0, MATCH_OR_TERM); |
cbdca852 LP |
254 | if (!j->level1) |
255 | return -ENOMEM; | |
256 | } | |
257 | ||
cd34b3c6 HH |
258 | if (!j->level2) { |
259 | j->level2 = match_new(j->level1, MATCH_AND_TERM); | |
260 | if (!j->level2) | |
261 | return -ENOMEM; | |
262 | } | |
263 | ||
264 | assert(j->level0->type == MATCH_AND_TERM); | |
265 | assert(j->level1->type == MATCH_OR_TERM); | |
266 | assert(j->level2->type == MATCH_AND_TERM); | |
ab4979d2 | 267 | |
4ce534f4 LP |
268 | /* Old-style Jenkins (unkeyed) hashing only here. We do not cover new-style siphash (keyed) hashing |
269 | * here, since it's different for each file, and thus can't be pre-calculated in the Match object. */ | |
20b0acfa | 270 | hash = jenkins_hash64(data, size); |
de190aef | 271 | |
cd34b3c6 HH |
272 | LIST_FOREACH(matches, l3, j->level2->matches) { |
273 | assert(l3->type == MATCH_OR_TERM); | |
de190aef | 274 | |
cd34b3c6 HH |
275 | LIST_FOREACH(matches, l4, l3->matches) { |
276 | assert(l4->type == MATCH_DISCRETE); | |
de190aef | 277 | |
cbdca852 LP |
278 | /* Exactly the same match already? Then ignore |
279 | * this addition */ | |
cde8c5f7 | 280 | if (l4->hash == hash && |
cd34b3c6 HH |
281 | l4->size == size && |
282 | memcmp(l4->data, data, size) == 0) | |
cbdca852 LP |
283 | return 0; |
284 | ||
285 | /* Same field? Then let's add this to this OR term */ | |
cd34b3c6 HH |
286 | if (same_field(data, size, l4->data, l4->size)) { |
287 | add_here = l3; | |
cbdca852 LP |
288 | break; |
289 | } | |
290 | } | |
291 | ||
292 | if (add_here) | |
293 | break; | |
de190aef LP |
294 | } |
295 | ||
cbdca852 | 296 | if (!add_here) { |
cd34b3c6 | 297 | add_here = match_new(j->level2, MATCH_OR_TERM); |
cbdca852 LP |
298 | if (!add_here) |
299 | goto fail; | |
300 | } | |
301 | ||
302 | m = match_new(add_here, MATCH_DISCRETE); | |
cec736d2 | 303 | if (!m) |
cbdca852 | 304 | goto fail; |
87d2c1ff | 305 | |
cde8c5f7 | 306 | m->hash = hash; |
1cc101f1 | 307 | m->size = size; |
cbdca852 LP |
308 | m->data = memdup(data, size); |
309 | if (!m->data) | |
310 | goto fail; | |
311 | ||
312 | detach_location(j); | |
313 | ||
314 | return 0; | |
315 | ||
316 | fail: | |
418cce62 | 317 | match_free(m); |
c5a10d9c | 318 | match_free_if_empty(add_here); |
39dfc0de YW |
319 | j->level2 = match_free_if_empty(j->level2); |
320 | j->level1 = match_free_if_empty(j->level1); | |
321 | j->level0 = match_free_if_empty(j->level0); | |
cbdca852 LP |
322 | |
323 | return -ENOMEM; | |
324 | } | |
325 | ||
cd34b3c6 | 326 | _public_ int sd_journal_add_conjunction(sd_journal *j) { |
1ae464e0 | 327 | assert_return(j, -EINVAL); |
e046719b | 328 | assert_return(!journal_origin_changed(j), -ECHILD); |
1cc101f1 | 329 | |
cbdca852 LP |
330 | if (!j->level0) |
331 | return 0; | |
332 | ||
333 | if (!j->level1) | |
334 | return 0; | |
335 | ||
336 | if (!j->level1->matches) | |
337 | return 0; | |
338 | ||
cd34b3c6 HH |
339 | j->level1 = NULL; |
340 | j->level2 = NULL; | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | _public_ int sd_journal_add_disjunction(sd_journal *j) { | |
1ae464e0 | 346 | assert_return(j, -EINVAL); |
e046719b | 347 | assert_return(!journal_origin_changed(j), -ECHILD); |
cd34b3c6 HH |
348 | |
349 | if (!j->level0) | |
350 | return 0; | |
351 | ||
352 | if (!j->level1) | |
353 | return 0; | |
354 | ||
355 | if (!j->level2) | |
356 | return 0; | |
357 | ||
358 | if (!j->level2->matches) | |
359 | return 0; | |
cbdca852 | 360 | |
cd34b3c6 | 361 | j->level2 = NULL; |
cbdca852 LP |
362 | return 0; |
363 | } | |
364 | ||
365 | static char *match_make_string(Match *m) { | |
6320409c | 366 | _cleanup_free_ char *p = NULL; |
cbdca852 LP |
367 | bool enclose = false; |
368 | ||
369 | if (!m) | |
4ad16808 | 370 | return strdup("none"); |
cbdca852 LP |
371 | |
372 | if (m->type == MATCH_DISCRETE) | |
9e8b1ec0 | 373 | return cescape_length(m->data, m->size); |
cbdca852 | 374 | |
cbdca852 | 375 | LIST_FOREACH(matches, i, m->matches) { |
6320409c | 376 | _cleanup_free_ char *t = NULL; |
cbdca852 LP |
377 | |
378 | t = match_make_string(i); | |
6b430fdb | 379 | if (!t) |
6320409c | 380 | return NULL; |
cbdca852 LP |
381 | |
382 | if (p) { | |
6320409c | 383 | if (!strextend(&p, m->type == MATCH_OR_TERM ? " OR " : " AND ", t)) |
cbdca852 LP |
384 | return NULL; |
385 | ||
cbdca852 | 386 | enclose = true; |
bc302926 | 387 | } else |
6320409c | 388 | p = TAKE_PTR(t); |
87d2c1ff LP |
389 | } |
390 | ||
6320409c LP |
391 | if (enclose) |
392 | return strjoin("(", p, ")"); | |
87d2c1ff | 393 | |
6320409c | 394 | return TAKE_PTR(p); |
cbdca852 | 395 | } |
de7b95cd | 396 | |
cbdca852 LP |
397 | char *journal_make_match_string(sd_journal *j) { |
398 | assert(j); | |
8f9b6cd9 | 399 | |
cbdca852 | 400 | return match_make_string(j->level0); |
87d2c1ff LP |
401 | } |
402 | ||
a5344d2c | 403 | _public_ void sd_journal_flush_matches(sd_journal *j) { |
e046719b | 404 | if (!j || journal_origin_changed(j)) |
a5344d2c | 405 | return; |
87d2c1ff | 406 | |
cbdca852 LP |
407 | if (j->level0) |
408 | match_free(j->level0); | |
de7b95cd | 409 | |
cd34b3c6 | 410 | j->level0 = j->level1 = j->level2 = NULL; |
8f9b6cd9 | 411 | |
de190aef | 412 | detach_location(j); |
87d2c1ff LP |
413 | } |
414 | ||
262299dc LP |
415 | static int journal_file_find_newest_for_boot_id( |
416 | sd_journal *j, | |
417 | sd_id128_t id, | |
418 | JournalFile **ret) { | |
419 | ||
420 | JournalFile *prev = NULL; | |
421 | int r; | |
422 | ||
423 | assert(j); | |
424 | assert(ret); | |
425 | ||
426 | /* Before we use it, let's refresh the timestamp from the header, and reshuffle our prioq | |
427 | * accordingly. We do this only a bunch of times, to not be caught in some update loop. */ | |
428 | for (unsigned n_tries = 0;; n_tries++) { | |
429 | JournalFile *f; | |
430 | Prioq *q; | |
431 | ||
432 | q = hashmap_get(j->newest_by_boot_id, &id); | |
433 | if (!q) | |
434 | return log_debug_errno(SYNTHETIC_ERRNO(ENODATA), | |
435 | "Requested delta for boot ID %s, but we have no information about that boot ID.", SD_ID128_TO_STRING(id)); | |
436 | ||
437 | assert_se(f = prioq_peek(q)); /* we delete hashmap entries once the prioq is empty, so this must hold */ | |
438 | ||
439 | if (f == prev || n_tries >= 5) { | |
440 | /* This was already the best answer in the previous run, or we tried too often, use it */ | |
441 | *ret = f; | |
442 | return 0; | |
443 | } | |
444 | ||
445 | prev = f; | |
446 | ||
447 | /* Let's read the journal file's current timestamp once, before we return it, maybe it has changed. */ | |
448 | r = journal_file_read_tail_timestamp(j, f); | |
449 | if (r < 0) | |
450 | return log_debug_errno(r, "Failed to read tail timestamp while trying to find newest journal file for boot ID %s.", SD_ID128_TO_STRING(id)); | |
451 | ||
452 | /* Refreshing the timestamp we read might have reshuffled the prioq, hence let's check the | |
453 | * prioq again and only use the the information once we reached an equilibrium or hit a | |
454 | * limit */ | |
455 | } | |
456 | } | |
457 | ||
458 | static int compare_boot_ids(sd_journal *j, sd_id128_t a, sd_id128_t b) { | |
459 | JournalFile *x, *y; | |
460 | ||
461 | assert(j); | |
462 | ||
463 | /* Try to find the newest open journal file for the two boot ids */ | |
464 | if (journal_file_find_newest_for_boot_id(j, a, &x) < 0 || | |
465 | journal_file_find_newest_for_boot_id(j, b, &y) < 0) | |
466 | return 0; | |
467 | ||
468 | /* Only compare the boot id timestamps if they originate from the same machine. If they are from | |
469 | * different machines, then we timestamps of the boot ids might be as off as the timestamps on the | |
470 | * entries and hence not useful for comparing. */ | |
471 | if (!sd_id128_equal(x->newest_machine_id, y->newest_machine_id)) | |
472 | return 0; | |
473 | ||
474 | return CMP(x->newest_realtime_usec, y->newest_realtime_usec); | |
475 | } | |
476 | ||
477 | static int compare_with_location( | |
478 | sd_journal *j, | |
479 | const JournalFile *f, | |
480 | const Location *l, | |
481 | const JournalFile *current_file) { | |
90c88092 YW |
482 | int r; |
483 | ||
262299dc | 484 | assert(j); |
487d3720 | 485 | assert(f); |
de190aef | 486 | assert(l); |
487d3720 | 487 | assert(f->location_type == LOCATION_SEEK); |
4c701096 | 488 | assert(IN_SET(l->type, LOCATION_DISCRETE, LOCATION_SEEK)); |
de190aef LP |
489 | |
490 | if (l->monotonic_set && | |
487d3720 | 491 | sd_id128_equal(f->current_boot_id, l->boot_id) && |
de190aef | 492 | l->realtime_set && |
487d3720 | 493 | f->current_realtime == l->realtime && |
de190aef | 494 | l->xor_hash_set && |
b6849042 | 495 | f->current_xor_hash == l->xor_hash && |
b17f651a | 496 | l->seqnum_set && |
497 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id) && | |
498 | f->current_seqnum == l->seqnum && | |
b6849042 | 499 | f != current_file) |
de190aef LP |
500 | return 0; |
501 | ||
502 | if (l->seqnum_set && | |
487d3720 | 503 | sd_id128_equal(f->header->seqnum_id, l->seqnum_id)) { |
90c88092 YW |
504 | r = CMP(f->current_seqnum, l->seqnum); |
505 | if (r != 0) | |
506 | return r; | |
de190aef LP |
507 | } |
508 | ||
262299dc LP |
509 | if (l->monotonic_set) { |
510 | /* If both arguments have the same boot ID, then we can compare the monotonic timestamps. If | |
511 | * they are distinct, then we might able to lookup the timestamps of those boot IDs (if they | |
512 | * are from the same machine) and order by that. */ | |
513 | if (sd_id128_equal(f->current_boot_id, l->boot_id)) | |
514 | r = CMP(f->current_monotonic, l->monotonic); | |
515 | else | |
516 | r = compare_boot_ids(j, f->current_boot_id, l->boot_id); | |
90c88092 YW |
517 | if (r != 0) |
518 | return r; | |
de190aef LP |
519 | } |
520 | ||
521 | if (l->realtime_set) { | |
90c88092 YW |
522 | r = CMP(f->current_realtime, l->realtime); |
523 | if (r != 0) | |
524 | return r; | |
de190aef LP |
525 | } |
526 | ||
527 | if (l->xor_hash_set) { | |
90c88092 YW |
528 | r = CMP(f->current_xor_hash, l->xor_hash); |
529 | if (r != 0) | |
530 | return r; | |
de190aef LP |
531 | } |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
cbdca852 LP |
536 | static int next_for_match( |
537 | sd_journal *j, | |
538 | Match *m, | |
539 | JournalFile *f, | |
540 | uint64_t after_offset, | |
541 | direction_t direction, | |
542 | Object **ret, | |
543 | uint64_t *offset) { | |
544 | ||
de7b95cd | 545 | int r; |
cbdca852 | 546 | uint64_t np = 0; |
de7b95cd LP |
547 | |
548 | assert(j); | |
cbdca852 LP |
549 | assert(m); |
550 | assert(f); | |
de7b95cd | 551 | |
cbdca852 | 552 | if (m->type == MATCH_DISCRETE) { |
ec50313d DDM |
553 | Object *d; |
554 | uint64_t hash; | |
de190aef | 555 | |
4ce534f4 LP |
556 | /* If the keyed hash logic is used, we need to calculate the hash fresh per file. Otherwise |
557 | * we can use what we pre-calculated. */ | |
558 | if (JOURNAL_HEADER_KEYED_HASH(f->header)) | |
559 | hash = journal_file_hash_data(f, m->data, m->size); | |
560 | else | |
561 | hash = m->hash; | |
562 | ||
ec50313d | 563 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, hash, &d, NULL); |
de190aef LP |
564 | if (r <= 0) |
565 | return r; | |
566 | ||
ec50313d | 567 | return journal_file_move_to_entry_by_offset_for_data(f, d, after_offset, direction, ret, offset); |
de190aef | 568 | |
cbdca852 | 569 | } else if (m->type == MATCH_OR_TERM) { |
de7b95cd | 570 | |
cbdca852 | 571 | /* Find the earliest match beyond after_offset */ |
de190aef | 572 | |
cbdca852 LP |
573 | LIST_FOREACH(matches, i, m->matches) { |
574 | uint64_t cp; | |
de190aef | 575 | |
cbdca852 | 576 | r = next_for_match(j, i, f, after_offset, direction, NULL, &cp); |
b4e5f920 LP |
577 | if (r < 0) |
578 | return r; | |
cbdca852 | 579 | else if (r > 0) { |
bc302926 | 580 | if (np == 0 || (direction == DIRECTION_DOWN ? cp < np : cp > np)) |
cbdca852 LP |
581 | np = cp; |
582 | } | |
583 | } | |
b4e5f920 | 584 | |
bc302926 ZJS |
585 | if (np == 0) |
586 | return 0; | |
587 | ||
cbdca852 | 588 | } else if (m->type == MATCH_AND_TERM) { |
03677889 | 589 | Match *last_moved; |
de190aef | 590 | |
cbdca852 | 591 | /* Always jump to the next matching entry and repeat |
2bc8ca0c | 592 | * this until we find an offset that matches for all |
cbdca852 | 593 | * matches. */ |
de190aef | 594 | |
cbdca852 LP |
595 | if (!m->matches) |
596 | return 0; | |
de7b95cd | 597 | |
2bc8ca0c ZJS |
598 | r = next_for_match(j, m->matches, f, after_offset, direction, NULL, &np); |
599 | if (r <= 0) | |
600 | return r; | |
de190aef | 601 | |
2bc8ca0c ZJS |
602 | assert(direction == DIRECTION_DOWN ? np >= after_offset : np <= after_offset); |
603 | last_moved = m->matches; | |
de190aef | 604 | |
2bc8ca0c ZJS |
605 | LIST_LOOP_BUT_ONE(matches, i, m->matches, last_moved) { |
606 | uint64_t cp; | |
de190aef | 607 | |
2bc8ca0c ZJS |
608 | r = next_for_match(j, i, f, np, direction, NULL, &cp); |
609 | if (r <= 0) | |
610 | return r; | |
de190aef | 611 | |
2bc8ca0c ZJS |
612 | assert(direction == DIRECTION_DOWN ? cp >= np : cp <= np); |
613 | if (direction == DIRECTION_DOWN ? cp > np : cp < np) { | |
614 | np = cp; | |
615 | last_moved = i; | |
de190aef | 616 | } |
2bc8ca0c | 617 | } |
cbdca852 | 618 | } |
de190aef | 619 | |
bc302926 | 620 | assert(np > 0); |
de190aef | 621 | |
4d8b09e4 DDM |
622 | if (ret) { |
623 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, ret); | |
624 | if (r < 0) | |
625 | return r; | |
626 | } | |
de7b95cd | 627 | |
de190aef | 628 | if (offset) |
cbdca852 | 629 | *offset = np; |
de190aef LP |
630 | |
631 | return 1; | |
632 | } | |
633 | ||
cbdca852 LP |
634 | static int find_location_for_match( |
635 | sd_journal *j, | |
636 | Match *m, | |
637 | JournalFile *f, | |
638 | direction_t direction, | |
639 | Object **ret, | |
640 | uint64_t *offset) { | |
641 | ||
de190aef | 642 | int r; |
de190aef LP |
643 | |
644 | assert(j); | |
cbdca852 | 645 | assert(m); |
de190aef | 646 | assert(f); |
de190aef | 647 | |
cbdca852 | 648 | if (m->type == MATCH_DISCRETE) { |
ec50313d | 649 | Object *d; |
4ce534f4 LP |
650 | uint64_t dp, hash; |
651 | ||
652 | if (JOURNAL_HEADER_KEYED_HASH(f->header)) | |
653 | hash = journal_file_hash_data(f, m->data, m->size); | |
654 | else | |
655 | hash = m->hash; | |
de190aef | 656 | |
ec50313d | 657 | r = journal_file_find_data_object_with_hash(f, m->data, m->size, hash, &d, &dp); |
de7b95cd LP |
658 | if (r <= 0) |
659 | return r; | |
660 | ||
cbdca852 | 661 | /* FIXME: missing: find by monotonic */ |
de7b95cd | 662 | |
cbdca852 | 663 | if (j->current_location.type == LOCATION_HEAD) |
7a4ee861 | 664 | return direction == DIRECTION_DOWN ? journal_file_next_entry_for_data(f, d, DIRECTION_DOWN, ret, offset) : 0; |
cbdca852 | 665 | if (j->current_location.type == LOCATION_TAIL) |
7a4ee861 | 666 | return direction == DIRECTION_UP ? journal_file_next_entry_for_data(f, d, DIRECTION_UP, ret, offset) : 0; |
cbdca852 | 667 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
ec50313d | 668 | return journal_file_move_to_entry_by_seqnum_for_data(f, d, j->current_location.seqnum, direction, ret, offset); |
cbdca852 | 669 | if (j->current_location.monotonic_set) { |
ec50313d | 670 | r = journal_file_move_to_entry_by_monotonic_for_data(f, d, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); |
cbdca852 LP |
671 | if (r != -ENOENT) |
672 | return r; | |
ec50313d DDM |
673 | |
674 | /* The data object might have been invalidated. */ | |
675 | r = journal_file_move_to_object(f, OBJECT_DATA, dp, &d); | |
676 | if (r < 0) | |
677 | return r; | |
cbdca852 LP |
678 | } |
679 | if (j->current_location.realtime_set) | |
ec50313d | 680 | return journal_file_move_to_entry_by_realtime_for_data(f, d, j->current_location.realtime, direction, ret, offset); |
de190aef | 681 | |
ec50313d | 682 | return journal_file_next_entry_for_data(f, d, direction, ret, offset); |
de7b95cd | 683 | |
cbdca852 LP |
684 | } else if (m->type == MATCH_OR_TERM) { |
685 | uint64_t np = 0; | |
de7b95cd | 686 | |
cbdca852 | 687 | /* Find the earliest match */ |
de7b95cd | 688 | |
cbdca852 LP |
689 | LIST_FOREACH(matches, i, m->matches) { |
690 | uint64_t cp; | |
691 | ||
692 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
693 | if (r < 0) | |
694 | return r; | |
695 | else if (r > 0) { | |
696 | if (np == 0 || (direction == DIRECTION_DOWN ? np > cp : np < cp)) | |
697 | np = cp; | |
de190aef | 698 | } |
cbdca852 | 699 | } |
de190aef | 700 | |
cbdca852 LP |
701 | if (np == 0) |
702 | return 0; | |
de7b95cd | 703 | |
4d8b09e4 DDM |
704 | if (ret) { |
705 | r = journal_file_move_to_object(f, OBJECT_ENTRY, np, ret); | |
706 | if (r < 0) | |
707 | return r; | |
708 | } | |
de7b95cd | 709 | |
cbdca852 LP |
710 | if (offset) |
711 | *offset = np; | |
de190aef | 712 | |
cbdca852 | 713 | return 1; |
e892bd17 | 714 | |
cbdca852 | 715 | } else { |
cbdca852 LP |
716 | uint64_t np = 0; |
717 | ||
718 | assert(m->type == MATCH_AND_TERM); | |
719 | ||
720 | /* First jump to the last match, and then find the | |
721 | * next one where all matches match */ | |
722 | ||
723 | if (!m->matches) | |
724 | return 0; | |
725 | ||
726 | LIST_FOREACH(matches, i, m->matches) { | |
727 | uint64_t cp; | |
728 | ||
729 | r = find_location_for_match(j, i, f, direction, NULL, &cp); | |
730 | if (r <= 0) | |
4b067dc9 LP |
731 | return r; |
732 | ||
bc302926 | 733 | if (np == 0 || (direction == DIRECTION_DOWN ? cp > np : cp < np)) |
cbdca852 | 734 | np = cp; |
de7b95cd LP |
735 | } |
736 | ||
cbdca852 LP |
737 | return next_for_match(j, m, f, np, direction, ret, offset); |
738 | } | |
739 | } | |
de190aef | 740 | |
cbdca852 LP |
741 | static int find_location_with_matches( |
742 | sd_journal *j, | |
743 | JournalFile *f, | |
744 | direction_t direction, | |
745 | Object **ret, | |
746 | uint64_t *offset) { | |
747 | ||
748 | int r; | |
749 | ||
750 | assert(j); | |
751 | assert(f); | |
752 | assert(ret); | |
753 | assert(offset); | |
754 | ||
755 | if (!j->level0) { | |
756 | /* No matches is simple */ | |
757 | ||
758 | if (j->current_location.type == LOCATION_HEAD) | |
7a4ee861 | 759 | return direction == DIRECTION_DOWN ? journal_file_next_entry(f, 0, DIRECTION_DOWN, ret, offset) : 0; |
cbdca852 | 760 | if (j->current_location.type == LOCATION_TAIL) |
7a4ee861 | 761 | return direction == DIRECTION_UP ? journal_file_next_entry(f, 0, DIRECTION_UP, ret, offset) : 0; |
cbdca852 LP |
762 | if (j->current_location.seqnum_set && sd_id128_equal(j->current_location.seqnum_id, f->header->seqnum_id)) |
763 | return journal_file_move_to_entry_by_seqnum(f, j->current_location.seqnum, direction, ret, offset); | |
764 | if (j->current_location.monotonic_set) { | |
765 | r = journal_file_move_to_entry_by_monotonic(f, j->current_location.boot_id, j->current_location.monotonic, direction, ret, offset); | |
766 | if (r != -ENOENT) | |
767 | return r; | |
de7b95cd | 768 | } |
cbdca852 LP |
769 | if (j->current_location.realtime_set) |
770 | return journal_file_move_to_entry_by_realtime(f, j->current_location.realtime, direction, ret, offset); | |
de7b95cd | 771 | |
f534928a | 772 | return journal_file_next_entry(f, 0, direction, ret, offset); |
cbdca852 LP |
773 | } else |
774 | return find_location_for_match(j, j->level0, f, direction, ret, offset); | |
775 | } | |
de7b95cd | 776 | |
cbdca852 LP |
777 | static int next_with_matches( |
778 | sd_journal *j, | |
779 | JournalFile *f, | |
780 | direction_t direction, | |
781 | Object **ret, | |
782 | uint64_t *offset) { | |
783 | ||
cbdca852 LP |
784 | assert(j); |
785 | assert(f); | |
786 | assert(ret); | |
787 | assert(offset); | |
788 | ||
cbdca852 LP |
789 | /* No matches is easy. We simple advance the file |
790 | * pointer by one. */ | |
791 | if (!j->level0) | |
b29ddfcb | 792 | return journal_file_next_entry(f, f->current_offset, direction, ret, offset); |
cbdca852 LP |
793 | |
794 | /* If we have a match then we look for the next matching entry | |
49f43d5f | 795 | * with an offset at least one step larger */ |
b29ddfcb MS |
796 | return next_for_match(j, j->level0, f, |
797 | direction == DIRECTION_DOWN ? f->current_offset + 1 | |
798 | : f->current_offset - 1, | |
799 | direction, ret, offset); | |
de7b95cd LP |
800 | } |
801 | ||
58439db4 | 802 | static int next_beyond_location(sd_journal *j, JournalFile *f, direction_t direction) { |
de190aef | 803 | Object *c; |
6e693b42 | 804 | uint64_t cp, n_entries; |
cbdca852 | 805 | int r; |
de190aef LP |
806 | |
807 | assert(j); | |
808 | assert(f); | |
809 | ||
34af7494 LP |
810 | (void) journal_file_read_tail_timestamp(j, f); |
811 | ||
950c07d4 MS |
812 | n_entries = le64toh(f->header->n_entries); |
813 | ||
814 | /* If we hit EOF before, we don't need to look into this file again | |
815 | * unless direction changed or new entries appeared. */ | |
a9414960 YW |
816 | if (f->last_direction == direction && |
817 | f->location_type == (direction == DIRECTION_DOWN ? LOCATION_TAIL : LOCATION_HEAD) && | |
950c07d4 MS |
818 | n_entries == f->last_n_entries) |
819 | return 0; | |
668c965a | 820 | |
950c07d4 MS |
821 | f->last_n_entries = n_entries; |
822 | ||
823 | if (f->last_direction == direction && f->current_offset > 0) { | |
7943f422 MS |
824 | /* LOCATION_SEEK here means we did the work in a previous |
825 | * iteration and the current location already points to a | |
826 | * candidate entry. */ | |
487d3720 MS |
827 | if (f->location_type != LOCATION_SEEK) { |
828 | r = next_with_matches(j, f, direction, &c, &cp); | |
829 | if (r <= 0) | |
830 | return r; | |
466ccd92 | 831 | |
950c07d4 | 832 | journal_file_save_location(f, c, cp); |
487d3720 | 833 | } |
de190aef | 834 | } else { |
950c07d4 MS |
835 | f->last_direction = direction; |
836 | ||
cbdca852 | 837 | r = find_location_with_matches(j, f, direction, &c, &cp); |
de190aef LP |
838 | if (r <= 0) |
839 | return r; | |
487d3720 | 840 | |
950c07d4 | 841 | journal_file_save_location(f, c, cp); |
de190aef LP |
842 | } |
843 | ||
bc302926 | 844 | /* OK, we found the spot, now let's advance until an entry |
cbdca852 LP |
845 | * that is actually different from what we were previously |
846 | * looking at. This is necessary to handle entries which exist | |
847 | * in two (or more) journal files, and which shall all be | |
848 | * suppressed but one. */ | |
849 | ||
de190aef LP |
850 | for (;;) { |
851 | bool found; | |
852 | ||
853 | if (j->current_location.type == LOCATION_DISCRETE) { | |
854 | int k; | |
855 | ||
262299dc | 856 | k = compare_with_location(j, f, &j->current_location, j->current_file); |
1cdf7175 CH |
857 | |
858 | found = direction == DIRECTION_DOWN ? k > 0 : k < 0; | |
de190aef LP |
859 | } else |
860 | found = true; | |
861 | ||
487d3720 | 862 | if (found) |
de190aef | 863 | return 1; |
de190aef LP |
864 | |
865 | r = next_with_matches(j, f, direction, &c, &cp); | |
866 | if (r <= 0) | |
867 | return r; | |
487d3720 | 868 | |
950c07d4 | 869 | journal_file_save_location(f, c, cp); |
de190aef LP |
870 | } |
871 | } | |
872 | ||
262299dc | 873 | static int compare_locations(sd_journal *j, JournalFile *af, JournalFile *bf) { |
01e4f03f LP |
874 | int r; |
875 | ||
262299dc | 876 | assert(j); |
01e4f03f LP |
877 | assert(af); |
878 | assert(af->header); | |
879 | assert(bf); | |
880 | assert(bf->header); | |
881 | assert(af->location_type == LOCATION_SEEK); | |
882 | assert(bf->location_type == LOCATION_SEEK); | |
883 | ||
884 | /* If contents, timestamps and seqnum match, these entries are identical. */ | |
885 | if (sd_id128_equal(af->current_boot_id, bf->current_boot_id) && | |
886 | af->current_monotonic == bf->current_monotonic && | |
887 | af->current_realtime == bf->current_realtime && | |
888 | af->current_xor_hash == bf->current_xor_hash && | |
889 | sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id) && | |
890 | af->current_seqnum == bf->current_seqnum) | |
891 | return 0; | |
892 | ||
893 | if (sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id)) { | |
894 | /* If this is from the same seqnum source, compare seqnums */ | |
895 | r = CMP(af->current_seqnum, bf->current_seqnum); | |
896 | if (r != 0) | |
897 | return r; | |
898 | ||
899 | /* Wow! This is weird, different data but the same seqnums? Something is borked, but let's | |
900 | * make the best of it and compare by time. */ | |
901 | } | |
902 | ||
262299dc | 903 | if (sd_id128_equal(af->current_boot_id, bf->current_boot_id)) |
01e4f03f LP |
904 | /* If the boot id matches, compare monotonic time */ |
905 | r = CMP(af->current_monotonic, bf->current_monotonic); | |
262299dc LP |
906 | else |
907 | /* If they don't match try to compare boot IDs */ | |
908 | r = compare_boot_ids(j, af->current_boot_id, bf->current_boot_id); | |
909 | if (r != 0) | |
910 | return r; | |
01e4f03f LP |
911 | |
912 | /* Otherwise, compare UTC time */ | |
913 | r = CMP(af->current_realtime, bf->current_realtime); | |
914 | if (r != 0) | |
915 | return r; | |
916 | ||
917 | /* Finally, compare by contents */ | |
918 | return CMP(af->current_xor_hash, bf->current_xor_hash); | |
919 | } | |
920 | ||
e892bd17 | 921 | static int real_journal_next(sd_journal *j, direction_t direction) { |
5d4ba7f2 | 922 | JournalFile *new_file = NULL; |
abcdc02c | 923 | unsigned n_files; |
5d4ba7f2 | 924 | const void **files; |
a002d44b | 925 | Object *o; |
87d2c1ff LP |
926 | int r; |
927 | ||
1ae464e0 | 928 | assert_return(j, -EINVAL); |
e046719b | 929 | assert_return(!journal_origin_changed(j), -ECHILD); |
87d2c1ff | 930 | |
5d4ba7f2 VC |
931 | r = iterated_cache_get(j->files_cache, NULL, &files, &n_files); |
932 | if (r < 0) | |
933 | return r; | |
934 | ||
abcdc02c | 935 | for (unsigned i = 0; i < n_files; i++) { |
5d4ba7f2 | 936 | JournalFile *f = (JournalFile *)files[i]; |
de190aef | 937 | bool found; |
87d2c1ff | 938 | |
58439db4 | 939 | r = next_beyond_location(j, f, direction); |
e590af26 | 940 | if (r < 0) { |
da927ba9 | 941 | log_debug_errno(r, "Can't iterate through %s, ignoring: %m", f->path); |
a9a245c1 | 942 | remove_file_real(j, f); |
e590af26 | 943 | continue; |
6573ef05 | 944 | } else if (r == 0) { |
a9414960 | 945 | f->location_type = direction == DIRECTION_DOWN ? LOCATION_TAIL : LOCATION_HEAD; |
cec736d2 | 946 | continue; |
6573ef05 | 947 | } |
87d2c1ff | 948 | |
468b21de | 949 | if (!new_file) |
de190aef LP |
950 | found = true; |
951 | else { | |
952 | int k; | |
953 | ||
262299dc | 954 | k = compare_locations(j, f, new_file); |
de190aef | 955 | |
bc302926 | 956 | found = direction == DIRECTION_DOWN ? k < 0 : k > 0; |
de190aef LP |
957 | } |
958 | ||
e499c999 | 959 | if (found) |
468b21de | 960 | new_file = f; |
87d2c1ff LP |
961 | } |
962 | ||
468b21de | 963 | if (!new_file) |
de190aef | 964 | return 0; |
ae2cc8ef | 965 | |
e499c999 | 966 | r = journal_file_move_to_object(new_file, OBJECT_ENTRY, new_file->current_offset, &o); |
468b21de LP |
967 | if (r < 0) |
968 | return r; | |
969 | ||
1eb6332d | 970 | set_location(j, new_file, o); |
ae2cc8ef | 971 | |
de190aef LP |
972 | return 1; |
973 | } | |
ae2cc8ef | 974 | |
a5344d2c | 975 | _public_ int sd_journal_next(sd_journal *j) { |
de190aef LP |
976 | return real_journal_next(j, DIRECTION_DOWN); |
977 | } | |
ae2cc8ef | 978 | |
a5344d2c | 979 | _public_ int sd_journal_previous(sd_journal *j) { |
de190aef LP |
980 | return real_journal_next(j, DIRECTION_UP); |
981 | } | |
ae2cc8ef | 982 | |
b78f9481 YW |
983 | _public_ int sd_journal_step_one(sd_journal *j, int advanced) { |
984 | assert_return(j, -EINVAL); | |
985 | ||
986 | if (j->current_location.type == LOCATION_HEAD) | |
987 | return sd_journal_next(j); | |
988 | if (j->current_location.type == LOCATION_TAIL) | |
989 | return sd_journal_previous(j); | |
990 | return real_journal_next(j, advanced ? DIRECTION_DOWN : DIRECTION_UP); | |
991 | } | |
992 | ||
6f003b43 | 993 | static int real_journal_next_skip(sd_journal *j, direction_t direction, uint64_t skip) { |
de190aef | 994 | int c = 0, r; |
ae2cc8ef | 995 | |
1ae464e0 | 996 | assert_return(j, -EINVAL); |
e046719b | 997 | assert_return(!journal_origin_changed(j), -ECHILD); |
41d544a1 | 998 | assert_return(skip <= INT_MAX, -ERANGE); |
de190aef | 999 | |
6f003b43 LP |
1000 | if (skip == 0) { |
1001 | /* If this is not a discrete skip, then at least | |
1002 | * resolve the current location */ | |
04884354 LK |
1003 | if (j->current_location.type != LOCATION_DISCRETE) { |
1004 | r = real_journal_next(j, direction); | |
1005 | if (r < 0) | |
1006 | return r; | |
1007 | } | |
6f003b43 LP |
1008 | |
1009 | return 0; | |
1010 | } | |
1011 | ||
1012 | do { | |
1013 | r = real_journal_next(j, direction); | |
de190aef LP |
1014 | if (r < 0) |
1015 | return r; | |
1016 | ||
1017 | if (r == 0) | |
1018 | return c; | |
1019 | ||
1020 | skip--; | |
1021 | c++; | |
6f003b43 | 1022 | } while (skip > 0); |
87d2c1ff | 1023 | |
de190aef | 1024 | return c; |
87d2c1ff LP |
1025 | } |
1026 | ||
6f003b43 LP |
1027 | _public_ int sd_journal_next_skip(sd_journal *j, uint64_t skip) { |
1028 | return real_journal_next_skip(j, DIRECTION_DOWN, skip); | |
1029 | } | |
de190aef | 1030 | |
6f003b43 LP |
1031 | _public_ int sd_journal_previous_skip(sd_journal *j, uint64_t skip) { |
1032 | return real_journal_next_skip(j, DIRECTION_UP, skip); | |
87d2c1ff LP |
1033 | } |
1034 | ||
a5344d2c | 1035 | _public_ int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 1036 | Object *o; |
87d2c1ff LP |
1037 | int r; |
1038 | ||
1ae464e0 | 1039 | assert_return(j, -EINVAL); |
e046719b | 1040 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 | 1041 | assert_return(cursor, -EINVAL); |
87d2c1ff | 1042 | |
3fbf9cbb LP |
1043 | if (!j->current_file || j->current_file->current_offset <= 0) |
1044 | return -EADDRNOTAVAIL; | |
87d2c1ff | 1045 | |
de190aef | 1046 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); |
87d2c1ff LP |
1047 | if (r < 0) |
1048 | return r; | |
1049 | ||
3fbf9cbb | 1050 | if (asprintf(cursor, |
507f22bd | 1051 | "s=%s;i=%"PRIx64";b=%s;m=%"PRIx64";t=%"PRIx64";x=%"PRIx64, |
85b55869 LP |
1052 | SD_ID128_TO_STRING(j->current_file->header->seqnum_id), le64toh(o->entry.seqnum), |
1053 | SD_ID128_TO_STRING(o->entry.boot_id), le64toh(o->entry.monotonic), | |
507f22bd ZJS |
1054 | le64toh(o->entry.realtime), |
1055 | le64toh(o->entry.xor_hash)) < 0) | |
3fbf9cbb | 1056 | return -ENOMEM; |
87d2c1ff | 1057 | |
6f47ad30 | 1058 | return 0; |
87d2c1ff LP |
1059 | } |
1060 | ||
a5344d2c | 1061 | _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) { |
de190aef | 1062 | unsigned long long seqnum, monotonic, realtime, xor_hash; |
da277e90 ZJS |
1063 | bool seqnum_id_set = false, |
1064 | seqnum_set = false, | |
1065 | boot_id_set = false, | |
1066 | monotonic_set = false, | |
1067 | realtime_set = false, | |
1068 | xor_hash_set = false; | |
de190aef | 1069 | sd_id128_t seqnum_id, boot_id; |
da277e90 | 1070 | int r; |
de190aef | 1071 | |
1ae464e0 | 1072 | assert_return(j, -EINVAL); |
e046719b | 1073 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 | 1074 | assert_return(!isempty(cursor), -EINVAL); |
de190aef | 1075 | |
da277e90 ZJS |
1076 | for (const char *p = cursor;;) { |
1077 | _cleanup_free_ char *word = NULL; | |
de190aef | 1078 | |
da277e90 ZJS |
1079 | r = extract_first_word(&p, &word, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
1080 | if (r < 0) | |
1081 | return r; | |
1082 | if (r == 0) | |
1083 | break; | |
de190aef | 1084 | |
da277e90 ZJS |
1085 | if (word[0] == '\0' || word[1] != '=') |
1086 | return -EINVAL; | |
de190aef | 1087 | |
a2a5291b | 1088 | switch (word[0]) { |
de190aef LP |
1089 | case 's': |
1090 | seqnum_id_set = true; | |
da277e90 ZJS |
1091 | r = sd_id128_from_string(word + 2, &seqnum_id); |
1092 | if (r < 0) | |
1093 | return r; | |
de190aef LP |
1094 | break; |
1095 | ||
1096 | case 'i': | |
1097 | seqnum_set = true; | |
da277e90 ZJS |
1098 | if (sscanf(word + 2, "%llx", &seqnum) != 1) |
1099 | return -EINVAL; | |
de190aef LP |
1100 | break; |
1101 | ||
1102 | case 'b': | |
1103 | boot_id_set = true; | |
da277e90 | 1104 | r = sd_id128_from_string(word + 2, &boot_id); |
c9f5ac09 SS |
1105 | if (r < 0) |
1106 | return r; | |
de190aef LP |
1107 | break; |
1108 | ||
1109 | case 'm': | |
1110 | monotonic_set = true; | |
da277e90 ZJS |
1111 | if (sscanf(word + 2, "%llx", &monotonic) != 1) |
1112 | return -EINVAL; | |
de190aef LP |
1113 | break; |
1114 | ||
1115 | case 't': | |
1116 | realtime_set = true; | |
da277e90 ZJS |
1117 | if (sscanf(word + 2, "%llx", &realtime) != 1) |
1118 | return -EINVAL; | |
de190aef LP |
1119 | break; |
1120 | ||
1121 | case 'x': | |
1122 | xor_hash_set = true; | |
da277e90 ZJS |
1123 | if (sscanf(word + 2, "%llx", &xor_hash) != 1) |
1124 | return -EINVAL; | |
de190aef LP |
1125 | break; |
1126 | } | |
de190aef LP |
1127 | } |
1128 | ||
1129 | if ((!seqnum_set || !seqnum_id_set) && | |
1130 | (!monotonic_set || !boot_id_set) && | |
1131 | !realtime_set) | |
1132 | return -EINVAL; | |
1133 | ||
bba6e4ae LP |
1134 | detach_location(j); |
1135 | j->current_location = (Location) { | |
1136 | .type = LOCATION_SEEK, | |
1137 | }; | |
de190aef LP |
1138 | |
1139 | if (realtime_set) { | |
1140 | j->current_location.realtime = (uint64_t) realtime; | |
1141 | j->current_location.realtime_set = true; | |
1142 | } | |
1143 | ||
1144 | if (seqnum_set && seqnum_id_set) { | |
1145 | j->current_location.seqnum = (uint64_t) seqnum; | |
1146 | j->current_location.seqnum_id = seqnum_id; | |
1147 | j->current_location.seqnum_set = true; | |
1148 | } | |
1149 | ||
1150 | if (monotonic_set && boot_id_set) { | |
1151 | j->current_location.monotonic = (uint64_t) monotonic; | |
1152 | j->current_location.boot_id = boot_id; | |
1153 | j->current_location.monotonic_set = true; | |
1154 | } | |
1155 | ||
1156 | if (xor_hash_set) { | |
1157 | j->current_location.xor_hash = (uint64_t) xor_hash; | |
1158 | j->current_location.xor_hash_set = true; | |
1159 | } | |
1160 | ||
1161 | return 0; | |
1162 | } | |
1163 | ||
c6511e85 LP |
1164 | _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) { |
1165 | int r; | |
c6511e85 LP |
1166 | Object *o; |
1167 | ||
1ae464e0 | 1168 | assert_return(j, -EINVAL); |
e046719b | 1169 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 | 1170 | assert_return(!isempty(cursor), -EINVAL); |
c6511e85 LP |
1171 | |
1172 | if (!j->current_file || j->current_file->current_offset <= 0) | |
1173 | return -EADDRNOTAVAIL; | |
1174 | ||
1175 | r = journal_file_move_to_object(j->current_file, OBJECT_ENTRY, j->current_file->current_offset, &o); | |
1176 | if (r < 0) | |
1177 | return r; | |
1178 | ||
9ed794a3 | 1179 | for (;;) { |
c6511e85 | 1180 | _cleanup_free_ char *item = NULL; |
c6511e85 | 1181 | unsigned long long ll; |
7294bb5b | 1182 | sd_id128_t id; |
c6511e85 LP |
1183 | int k = 0; |
1184 | ||
7294bb5b SS |
1185 | r = extract_first_word(&cursor, &item, ";", EXTRACT_DONT_COALESCE_SEPARATORS); |
1186 | if (r < 0) | |
1187 | return r; | |
c6511e85 | 1188 | |
7294bb5b SS |
1189 | if (r == 0) |
1190 | break; | |
c6511e85 | 1191 | |
7294bb5b SS |
1192 | if (strlen(item) < 2 || item[1] != '=') |
1193 | return -EINVAL; | |
1194 | ||
1195 | switch (item[0]) { | |
c6511e85 LP |
1196 | |
1197 | case 's': | |
1198 | k = sd_id128_from_string(item+2, &id); | |
1199 | if (k < 0) | |
1200 | return k; | |
1201 | if (!sd_id128_equal(id, j->current_file->header->seqnum_id)) | |
1202 | return 0; | |
1203 | break; | |
1204 | ||
1205 | case 'i': | |
1206 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1207 | return -EINVAL; | |
1208 | if (ll != le64toh(o->entry.seqnum)) | |
1209 | return 0; | |
1210 | break; | |
1211 | ||
1212 | case 'b': | |
1213 | k = sd_id128_from_string(item+2, &id); | |
1214 | if (k < 0) | |
1215 | return k; | |
1216 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
1217 | return 0; | |
1218 | break; | |
1219 | ||
1220 | case 'm': | |
1221 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1222 | return -EINVAL; | |
1223 | if (ll != le64toh(o->entry.monotonic)) | |
1224 | return 0; | |
1225 | break; | |
1226 | ||
1227 | case 't': | |
1228 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1229 | return -EINVAL; | |
1230 | if (ll != le64toh(o->entry.realtime)) | |
1231 | return 0; | |
1232 | break; | |
1233 | ||
1234 | case 'x': | |
1235 | if (sscanf(item+2, "%llx", &ll) != 1) | |
1236 | return -EINVAL; | |
1237 | if (ll != le64toh(o->entry.xor_hash)) | |
1238 | return 0; | |
1239 | break; | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | return 1; | |
1244 | } | |
1245 | ||
a5344d2c | 1246 | _public_ int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec) { |
1ae464e0 | 1247 | assert_return(j, -EINVAL); |
e046719b | 1248 | assert_return(!journal_origin_changed(j), -ECHILD); |
de190aef | 1249 | |
bba6e4ae LP |
1250 | detach_location(j); |
1251 | ||
1252 | j->current_location = (Location) { | |
1253 | .type = LOCATION_SEEK, | |
1254 | .boot_id = boot_id, | |
1255 | .monotonic = usec, | |
1256 | .monotonic_set = true, | |
1257 | }; | |
de190aef LP |
1258 | |
1259 | return 0; | |
1260 | } | |
1261 | ||
a5344d2c | 1262 | _public_ int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec) { |
1ae464e0 | 1263 | assert_return(j, -EINVAL); |
e046719b | 1264 | assert_return(!journal_origin_changed(j), -ECHILD); |
de190aef | 1265 | |
bba6e4ae LP |
1266 | detach_location(j); |
1267 | ||
1268 | j->current_location = (Location) { | |
1269 | .type = LOCATION_SEEK, | |
1270 | .realtime = usec, | |
1271 | .realtime_set = true, | |
1272 | }; | |
de190aef LP |
1273 | |
1274 | return 0; | |
1275 | } | |
1276 | ||
a5344d2c | 1277 | _public_ int sd_journal_seek_head(sd_journal *j) { |
1ae464e0 | 1278 | assert_return(j, -EINVAL); |
e046719b | 1279 | assert_return(!journal_origin_changed(j), -ECHILD); |
de190aef | 1280 | |
bba6e4ae LP |
1281 | detach_location(j); |
1282 | ||
1283 | j->current_location = (Location) { | |
1284 | .type = LOCATION_HEAD, | |
1285 | }; | |
de190aef LP |
1286 | |
1287 | return 0; | |
1288 | } | |
1289 | ||
a5344d2c | 1290 | _public_ int sd_journal_seek_tail(sd_journal *j) { |
1ae464e0 | 1291 | assert_return(j, -EINVAL); |
e046719b | 1292 | assert_return(!journal_origin_changed(j), -ECHILD); |
de190aef | 1293 | |
bba6e4ae LP |
1294 | detach_location(j); |
1295 | ||
1296 | j->current_location = (Location) { | |
1297 | .type = LOCATION_TAIL, | |
1298 | }; | |
de190aef LP |
1299 | |
1300 | return 0; | |
87d2c1ff LP |
1301 | } |
1302 | ||
85210bff | 1303 | static void check_network(sd_journal *j, int fd) { |
85210bff LP |
1304 | assert(j); |
1305 | ||
1306 | if (j->on_network) | |
1307 | return; | |
1308 | ||
77f9fa3b | 1309 | j->on_network = fd_is_network_fs(fd); |
85210bff LP |
1310 | } |
1311 | ||
a688baa8 ZJS |
1312 | static bool file_has_type_prefix(const char *prefix, const char *filename) { |
1313 | const char *full, *tilded, *atted; | |
1314 | ||
63c372cb LP |
1315 | full = strjoina(prefix, ".journal"); |
1316 | tilded = strjoina(full, "~"); | |
1317 | atted = strjoina(prefix, "@"); | |
a688baa8 | 1318 | |
0cbd293e | 1319 | return STR_IN_SET(filename, full, tilded) || |
a688baa8 ZJS |
1320 | startswith(filename, atted); |
1321 | } | |
1322 | ||
1323 | static bool file_type_wanted(int flags, const char *filename) { | |
d617408e LP |
1324 | assert(filename); |
1325 | ||
97c621b7 | 1326 | if (!ENDSWITH_SET(filename, ".journal", ".journal~")) |
a688baa8 ZJS |
1327 | return false; |
1328 | ||
1329 | /* no flags set → every type is OK */ | |
1330 | if (!(flags & (SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER))) | |
1331 | return true; | |
1332 | ||
97c621b7 | 1333 | if (FLAGS_SET(flags, SD_JOURNAL_CURRENT_USER)) { |
a688baa8 ZJS |
1334 | char prefix[5 + DECIMAL_STR_MAX(uid_t) + 1]; |
1335 | ||
97c621b7 | 1336 | xsprintf(prefix, "user-" UID_FMT, getuid()); |
a688baa8 ZJS |
1337 | |
1338 | if (file_has_type_prefix(prefix, filename)) | |
1339 | return true; | |
97c621b7 LP |
1340 | |
1341 | /* If SD_JOURNAL_CURRENT_USER is specified and we are invoked under a system UID, then | |
1342 | * automatically enable SD_JOURNAL_SYSTEM too, because journald will actually put system user | |
1343 | * data into the system journal. */ | |
1344 | ||
1345 | if (uid_for_system_journal(getuid())) | |
1346 | flags |= SD_JOURNAL_SYSTEM; | |
a688baa8 ZJS |
1347 | } |
1348 | ||
97c621b7 LP |
1349 | if (FLAGS_SET(flags, SD_JOURNAL_SYSTEM) && file_has_type_prefix("system", filename)) |
1350 | return true; | |
1351 | ||
a688baa8 ZJS |
1352 | return false; |
1353 | } | |
1354 | ||
5d1ce257 LP |
1355 | static bool path_has_prefix(sd_journal *j, const char *path, const char *prefix) { |
1356 | assert(j); | |
1357 | assert(path); | |
1358 | assert(prefix); | |
1359 | ||
1360 | if (j->toplevel_fd >= 0) | |
1361 | return false; | |
1362 | ||
1363 | return path_startswith(path, prefix); | |
1364 | } | |
1365 | ||
9c66f528 LP |
1366 | static void track_file_disposition(sd_journal *j, JournalFile *f) { |
1367 | assert(j); | |
1368 | assert(f); | |
1369 | ||
1370 | if (!j->has_runtime_files && path_has_prefix(j, f->path, "/run")) | |
1371 | j->has_runtime_files = true; | |
1372 | else if (!j->has_persistent_files && path_has_prefix(j, f->path, "/var")) | |
1373 | j->has_persistent_files = true; | |
1374 | } | |
1375 | ||
5d1ce257 LP |
1376 | static const char *skip_slash(const char *p) { |
1377 | ||
1378 | if (!p) | |
1379 | return NULL; | |
1380 | ||
1381 | while (*p == '/') | |
1382 | p++; | |
1383 | ||
1384 | return p; | |
1385 | } | |
1386 | ||
9c66f528 LP |
1387 | static int add_any_file( |
1388 | sd_journal *j, | |
1389 | int fd, | |
1390 | const char *path) { | |
1391 | ||
254d1313 | 1392 | _cleanup_close_ int our_fd = -EBADF; |
9c66f528 LP |
1393 | JournalFile *f; |
1394 | struct stat st; | |
70f50a47 | 1395 | int r; |
3fbf9cbb LP |
1396 | |
1397 | assert(j); | |
5d1ce257 | 1398 | assert(fd >= 0 || path); |
3fbf9cbb | 1399 | |
9c66f528 | 1400 | if (fd < 0) { |
85b0ff8a | 1401 | assert(path); /* For gcc. */ |
9c66f528 LP |
1402 | if (j->toplevel_fd >= 0) |
1403 | /* If there's a top-level fd defined make the path relative, explicitly, since otherwise | |
1404 | * openat() ignores the first argument. */ | |
1405 | ||
70f50a47 | 1406 | fd = our_fd = openat(j->toplevel_fd, skip_slash(path), O_RDONLY|O_CLOEXEC|O_NONBLOCK); |
9c66f528 | 1407 | else |
70f50a47 | 1408 | fd = our_fd = open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK); |
9c66f528 LP |
1409 | if (fd < 0) { |
1410 | r = log_debug_errno(errno, "Failed to open journal file %s: %m", path); | |
70f50a47 | 1411 | goto error; |
9c66f528 LP |
1412 | } |
1413 | ||
9c66f528 LP |
1414 | r = fd_nonblock(fd, false); |
1415 | if (r < 0) { | |
1416 | r = log_debug_errno(errno, "Failed to turn off O_NONBLOCK for %s: %m", path); | |
70f50a47 | 1417 | goto error; |
858749f7 LP |
1418 | } |
1419 | } | |
50f20cfd | 1420 | |
9c66f528 | 1421 | if (fstat(fd, &st) < 0) { |
85b0ff8a | 1422 | r = log_debug_errno(errno, "Failed to fstat %s: %m", path ?: "fd"); |
70f50a47 | 1423 | goto error; |
9c66f528 | 1424 | } |
3cc44114 LP |
1425 | |
1426 | r = stat_verify_regular(&st); | |
1427 | if (r < 0) { | |
85b0ff8a | 1428 | log_debug_errno(r, "Refusing to open %s: %m", path ?: "fd"); |
70f50a47 | 1429 | goto error; |
9e8abdf0 LP |
1430 | } |
1431 | ||
85b0ff8a ZJS |
1432 | if (path) { |
1433 | f = ordered_hashmap_get(j->files, path); | |
1434 | if (f) { | |
1435 | if (stat_inode_same(&f->last_stat, &st)) { | |
1436 | /* We already track this file, under the same path and with the same | |
1437 | * device/inode numbers, it's hence really the same. Mark this file as seen | |
1438 | * in this generation. This is used to GC old files in process_q_overflow() | |
1439 | * to detect journal files that are still there and discern them from those | |
1440 | * which are gone. */ | |
1441 | ||
1442 | f->last_seen_generation = j->generation; | |
34af7494 | 1443 | (void) journal_file_read_tail_timestamp(j, f); |
70f50a47 | 1444 | return 0; |
85b0ff8a | 1445 | } |
5d1ce257 | 1446 | |
85b0ff8a ZJS |
1447 | /* So we tracked a file under this name, but it has a different inode/device. In that |
1448 | * case, it got replaced (probably due to rotation?), let's drop it hence from our | |
1449 | * list. */ | |
1450 | remove_file_real(j, f); | |
1451 | f = NULL; | |
5d1ce257 | 1452 | } |
9c66f528 LP |
1453 | } |
1454 | ||
1455 | if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) { | |
70f50a47 ZJS |
1456 | r = log_debug_errno(SYNTHETIC_ERRNO(ETOOMANYREFS), |
1457 | "Too many open journal files, not adding %s.", path ?: "fd"); | |
1458 | goto error; | |
5d1ce257 LP |
1459 | } |
1460 | ||
49615dbd | 1461 | r = journal_file_open(fd, path, O_RDONLY, 0, 0, 0, NULL, j->mmap, NULL, &f); |
d617408e | 1462 | if (r < 0) { |
85b0ff8a | 1463 | log_debug_errno(r, "Failed to open journal file %s: %m", path ?: "from fd"); |
70f50a47 | 1464 | goto error; |
d617408e | 1465 | } |
3fbf9cbb | 1466 | |
72f59706 | 1467 | /* journal_file_dump(f); */ |
de190aef | 1468 | |
85b0ff8a | 1469 | /* journal_file_open() generates an replacement fname if necessary, so we can use f->path. */ |
c1f906bd | 1470 | r = ordered_hashmap_put(j->files, f->path, f); |
3fbf9cbb | 1471 | if (r < 0) { |
85b0ff8a ZJS |
1472 | f->close_fd = false; /* Make sure journal_file_close() doesn't close the caller's fd |
1473 | * (or our own). The caller or we will do that ourselves. */ | |
69a3a6fd | 1474 | (void) journal_file_close(f); |
70f50a47 | 1475 | goto error; |
3fbf9cbb LP |
1476 | } |
1477 | ||
70f50a47 | 1478 | TAKE_FD(our_fd); /* the fd is now owned by the JournalFile object */ |
5d1ce257 | 1479 | |
9c66f528 | 1480 | f->last_seen_generation = j->generation; |
a50d7d43 | 1481 | |
9c66f528 | 1482 | track_file_disposition(j, f); |
85210bff | 1483 | check_network(j, f->fd); |
34af7494 | 1484 | (void) journal_file_read_tail_timestamp(j, f); |
85210bff | 1485 | |
313cefa1 | 1486 | j->current_invalidate_counter++; |
a963990f | 1487 | |
9c66f528 | 1488 | log_debug("File %s added.", f->path); |
d617408e | 1489 | |
70f50a47 | 1490 | return 0; |
d617408e | 1491 | |
70f50a47 ZJS |
1492 | error: |
1493 | (void) journal_put_error(j, r, path); /* path==NULL is OK. */ | |
d617408e | 1494 | return r; |
50f20cfd LP |
1495 | } |
1496 | ||
fc1813c0 LP |
1497 | static int add_file_by_name( |
1498 | sd_journal *j, | |
1499 | const char *prefix, | |
1500 | const char *filename) { | |
1501 | ||
8e7e4a73 | 1502 | _cleanup_free_ char *path = NULL; |
5302ebe1 ZJS |
1503 | |
1504 | assert(j); | |
1505 | assert(prefix); | |
1506 | assert(filename); | |
1507 | ||
5d1ce257 | 1508 | if (j->no_new_files) |
5302ebe1 ZJS |
1509 | return 0; |
1510 | ||
5d1ce257 LP |
1511 | if (!file_type_wanted(j->flags, filename)) |
1512 | return 0; | |
39fd5b08 | 1513 | |
8e7e4a73 LP |
1514 | path = path_join(prefix, filename); |
1515 | if (!path) | |
1516 | return -ENOMEM; | |
1517 | ||
5d1ce257 | 1518 | return add_any_file(j, -1, path); |
5302ebe1 ZJS |
1519 | } |
1520 | ||
8e7e4a73 | 1521 | static int remove_file_by_name( |
fc1813c0 LP |
1522 | sd_journal *j, |
1523 | const char *prefix, | |
1524 | const char *filename) { | |
1525 | ||
8e7e4a73 | 1526 | _cleanup_free_ char *path = NULL; |
50f20cfd LP |
1527 | JournalFile *f; |
1528 | ||
1529 | assert(j); | |
1530 | assert(prefix); | |
1531 | assert(filename); | |
1532 | ||
8e7e4a73 LP |
1533 | path = path_join(prefix, filename); |
1534 | if (!path) | |
1535 | return -ENOMEM; | |
1536 | ||
c1f906bd | 1537 | f = ordered_hashmap_get(j->files, path); |
50f20cfd | 1538 | if (!f) |
8e7e4a73 | 1539 | return 0; |
50f20cfd | 1540 | |
a9a245c1 | 1541 | remove_file_real(j, f); |
8e7e4a73 | 1542 | return 1; |
a9a245c1 ZJS |
1543 | } |
1544 | ||
1545 | static void remove_file_real(sd_journal *j, JournalFile *f) { | |
1546 | assert(j); | |
1547 | assert(f); | |
1548 | ||
fc1813c0 | 1549 | (void) ordered_hashmap_remove(j->files, f->path); |
44a5fa34 | 1550 | |
5ec76417 | 1551 | log_debug("File %s removed.", f->path); |
44a5fa34 | 1552 | |
3c1668da LP |
1553 | if (j->current_file == f) { |
1554 | j->current_file = NULL; | |
1555 | j->current_field = 0; | |
1556 | } | |
1557 | ||
1558 | if (j->unique_file == f) { | |
360af4cf | 1559 | /* Jump to the next unique_file or NULL if that one was last */ |
c1f906bd | 1560 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
3c1668da | 1561 | j->unique_offset = 0; |
360af4cf ZJS |
1562 | if (!j->unique_file) |
1563 | j->unique_file_lost = true; | |
3c1668da LP |
1564 | } |
1565 | ||
eb86030e LP |
1566 | if (j->fields_file == f) { |
1567 | j->fields_file = ordered_hashmap_next(j->files, j->fields_file->path); | |
1568 | j->fields_offset = 0; | |
1569 | if (!j->fields_file) | |
1570 | j->fields_file_lost = true; | |
1571 | } | |
1572 | ||
34af7494 | 1573 | journal_file_unlink_newest_by_bood_id(j, f); |
69a3a6fd | 1574 | (void) journal_file_close(f); |
50f20cfd | 1575 | |
313cefa1 | 1576 | j->current_invalidate_counter++; |
3fbf9cbb LP |
1577 | } |
1578 | ||
d617408e LP |
1579 | static int dirname_is_machine_id(const char *fn) { |
1580 | sd_id128_t id, machine; | |
456aa879 | 1581 | const char *e; |
d617408e LP |
1582 | int r; |
1583 | ||
456aa879 LP |
1584 | /* Returns true if the specified directory name matches the local machine ID */ |
1585 | ||
d617408e LP |
1586 | r = sd_id128_get_machine(&machine); |
1587 | if (r < 0) | |
1588 | return r; | |
1589 | ||
456aa879 LP |
1590 | e = strchr(fn, '.'); |
1591 | if (e) { | |
1592 | const char *k; | |
1593 | ||
1594 | /* Looks like it has a namespace suffix. Verify that. */ | |
1595 | if (!log_namespace_name_valid(e + 1)) | |
1596 | return false; | |
1597 | ||
2f82562b | 1598 | k = strndupa_safe(fn, e - fn); |
456aa879 LP |
1599 | r = sd_id128_from_string(k, &id); |
1600 | } else | |
1601 | r = sd_id128_from_string(fn, &id); | |
d617408e LP |
1602 | if (r < 0) |
1603 | return r; | |
1604 | ||
1605 | return sd_id128_equal(id, machine); | |
1606 | } | |
1607 | ||
456aa879 LP |
1608 | static int dirname_has_namespace(const char *fn, const char *namespace) { |
1609 | const char *e; | |
1610 | ||
1611 | /* Returns true if the specified directory name matches the specified namespace */ | |
1612 | ||
1613 | e = strchr(fn, '.'); | |
1614 | if (e) { | |
1615 | const char *k; | |
1616 | ||
1617 | if (!namespace) | |
1618 | return false; | |
1619 | ||
1620 | if (!streq(e + 1, namespace)) | |
1621 | return false; | |
1622 | ||
2f82562b | 1623 | k = strndupa_safe(fn, e - fn); |
456aa879 LP |
1624 | return id128_is_valid(k); |
1625 | } | |
1626 | ||
1627 | if (namespace) | |
1628 | return false; | |
1629 | ||
1630 | return id128_is_valid(fn); | |
1631 | } | |
1632 | ||
858749f7 LP |
1633 | static bool dirent_is_journal_file(const struct dirent *de) { |
1634 | assert(de); | |
1635 | ||
456aa879 LP |
1636 | /* Returns true if the specified directory entry looks like a journal file we might be interested in */ |
1637 | ||
858749f7 LP |
1638 | if (!IN_SET(de->d_type, DT_REG, DT_LNK, DT_UNKNOWN)) |
1639 | return false; | |
1640 | ||
1641 | return endswith(de->d_name, ".journal") || | |
1642 | endswith(de->d_name, ".journal~"); | |
1643 | } | |
1644 | ||
456aa879 LP |
1645 | static bool dirent_is_journal_subdir(const struct dirent *de) { |
1646 | const char *e, *n; | |
858749f7 LP |
1647 | assert(de); |
1648 | ||
456aa879 | 1649 | /* returns true if the specified directory entry looks like a directory that might contain journal |
da890466 | 1650 | * files we might be interested in, i.e. is either a 128-bit ID or a 128-bit ID suffixed by a |
456aa879 LP |
1651 | * namespace. */ |
1652 | ||
858749f7 LP |
1653 | if (!IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN)) |
1654 | return false; | |
1655 | ||
456aa879 LP |
1656 | e = strchr(de->d_name, '.'); |
1657 | if (!e) | |
1658 | return id128_is_valid(de->d_name); /* No namespace */ | |
1659 | ||
2f82562b | 1660 | n = strndupa_safe(de->d_name, e - de->d_name); |
456aa879 LP |
1661 | if (!id128_is_valid(n)) |
1662 | return false; | |
1663 | ||
1664 | return log_namespace_name_valid(e + 1); | |
858749f7 LP |
1665 | } |
1666 | ||
1667 | static int directory_open(sd_journal *j, const char *path, DIR **ret) { | |
1668 | DIR *d; | |
1669 | ||
1670 | assert(j); | |
1671 | assert(path); | |
1672 | assert(ret); | |
1673 | ||
1674 | if (j->toplevel_fd < 0) | |
1675 | d = opendir(path); | |
1676 | else | |
1677 | /* Open the specified directory relative to the toplevel fd. Enforce that the path specified is | |
1678 | * relative, by dropping the initial slash */ | |
1679 | d = xopendirat(j->toplevel_fd, skip_slash(path), 0); | |
1680 | if (!d) | |
1681 | return -errno; | |
1682 | ||
1683 | *ret = d; | |
1684 | return 0; | |
1685 | } | |
1686 | ||
1687 | static int add_directory(sd_journal *j, const char *prefix, const char *dirname); | |
1688 | ||
1689 | static void directory_enumerate(sd_journal *j, Directory *m, DIR *d) { | |
858749f7 LP |
1690 | assert(j); |
1691 | assert(m); | |
1692 | assert(d); | |
1693 | ||
1694 | FOREACH_DIRENT_ALL(de, d, goto fail) { | |
1695 | if (dirent_is_journal_file(de)) | |
fc1813c0 | 1696 | (void) add_file_by_name(j, m->path, de->d_name); |
858749f7 | 1697 | |
456aa879 | 1698 | if (m->is_root && dirent_is_journal_subdir(de)) |
858749f7 LP |
1699 | (void) add_directory(j, m->path, de->d_name); |
1700 | } | |
1701 | ||
1702 | return; | |
858749f7 LP |
1703 | fail: |
1704 | log_debug_errno(errno, "Failed to enumerate directory %s, ignoring: %m", m->path); | |
1705 | } | |
1706 | ||
1707 | static void directory_watch(sd_journal *j, Directory *m, int fd, uint32_t mask) { | |
1708 | int r; | |
1709 | ||
1710 | assert(j); | |
1711 | assert(m); | |
1712 | assert(fd >= 0); | |
1713 | ||
1714 | /* Watch this directory if that's enabled and if it not being watched yet. */ | |
1715 | ||
1716 | if (m->wd > 0) /* Already have a watch? */ | |
1717 | return; | |
1718 | if (j->inotify_fd < 0) /* Not watching at all? */ | |
1719 | return; | |
1720 | ||
1721 | m->wd = inotify_add_watch_fd(j->inotify_fd, fd, mask); | |
1722 | if (m->wd < 0) { | |
1723 | log_debug_errno(errno, "Failed to watch journal directory '%s', ignoring: %m", m->path); | |
1724 | return; | |
1725 | } | |
1726 | ||
1727 | r = hashmap_put(j->directories_by_wd, INT_TO_PTR(m->wd), m); | |
1728 | if (r == -EEXIST) | |
1729 | log_debug_errno(r, "Directory '%s' already being watched under a different path, ignoring: %m", m->path); | |
1730 | if (r < 0) { | |
1731 | log_debug_errno(r, "Failed to add watch for journal directory '%s' to hashmap, ignoring: %m", m->path); | |
1732 | (void) inotify_rm_watch(j->inotify_fd, m->wd); | |
1733 | m->wd = -1; | |
1734 | } | |
1735 | } | |
1736 | ||
456aa879 LP |
1737 | static int add_directory( |
1738 | sd_journal *j, | |
1739 | const char *prefix, | |
1740 | const char *dirname) { | |
1741 | ||
7fd1b19b | 1742 | _cleanup_free_ char *path = NULL; |
7fd1b19b | 1743 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1744 | Directory *m; |
d617408e | 1745 | int r, k; |
3fbf9cbb LP |
1746 | |
1747 | assert(j); | |
1748 | assert(prefix); | |
3fbf9cbb | 1749 | |
5d1ce257 LP |
1750 | /* Adds a journal file directory to watch. If the directory is already tracked this updates the inotify watch |
1751 | * and reenumerates directory contents */ | |
d95b1fb3 | 1752 | |
657ee2d8 | 1753 | path = path_join(prefix, dirname); |
d617408e LP |
1754 | if (!path) { |
1755 | r = -ENOMEM; | |
1756 | goto fail; | |
1757 | } | |
3fbf9cbb | 1758 | |
858749f7 | 1759 | log_debug("Considering directory '%s'.", path); |
5d1ce257 LP |
1760 | |
1761 | /* We consider everything local that is in a directory for the local machine ID, or that is stored in /run */ | |
1762 | if ((j->flags & SD_JOURNAL_LOCAL_ONLY) && | |
1763 | !((dirname && dirname_is_machine_id(dirname) > 0) || path_has_prefix(j, path, "/run"))) | |
858749f7 | 1764 | return 0; |
5d1ce257 | 1765 | |
2b6df46d LP |
1766 | if (dirname && |
1767 | (!(FLAGS_SET(j->flags, SD_JOURNAL_ALL_NAMESPACES) || | |
1768 | dirname_has_namespace(dirname, j->namespace) > 0 || | |
1769 | (FLAGS_SET(j->flags, SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE) && dirname_has_namespace(dirname, NULL) > 0)))) | |
456aa879 LP |
1770 | return 0; |
1771 | ||
858749f7 LP |
1772 | r = directory_open(j, path, &d); |
1773 | if (r < 0) { | |
1774 | log_debug_errno(r, "Failed to open directory '%s': %m", path); | |
d617408e | 1775 | goto fail; |
3fbf9cbb LP |
1776 | } |
1777 | ||
a963990f LP |
1778 | m = hashmap_get(j->directories_by_path, path); |
1779 | if (!m) { | |
2f5435a1 | 1780 | m = new(Directory, 1); |
d617408e LP |
1781 | if (!m) { |
1782 | r = -ENOMEM; | |
1783 | goto fail; | |
1784 | } | |
a963990f | 1785 | |
2f5435a1 LP |
1786 | *m = (Directory) { |
1787 | .is_root = false, | |
1788 | .path = path, | |
1789 | }; | |
a963990f LP |
1790 | |
1791 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f | 1792 | free(m); |
d617408e LP |
1793 | r = -ENOMEM; |
1794 | goto fail; | |
a963990f LP |
1795 | } |
1796 | ||
a50d7d43 | 1797 | path = NULL; /* avoid freeing in cleanup */ |
313cefa1 | 1798 | j->current_invalidate_counter++; |
a963990f | 1799 | |
5ec76417 | 1800 | log_debug("Directory %s added.", m->path); |
a963990f | 1801 | |
a50d7d43 | 1802 | } else if (m->is_root) |
858749f7 | 1803 | return 0; /* Don't 'downgrade' from root directory */ |
a963990f | 1804 | |
858749f7 | 1805 | m->last_seen_generation = j->generation; |
a963990f | 1806 | |
858749f7 LP |
1807 | directory_watch(j, m, dirfd(d), |
1808 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1809 | IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_MOVED_FROM| | |
1810 | IN_ONLYDIR); | |
a963990f | 1811 | |
858749f7 LP |
1812 | if (!j->no_new_files) |
1813 | directory_enumerate(j, m, d); | |
a963990f | 1814 | |
85210bff LP |
1815 | check_network(j, dirfd(d)); |
1816 | ||
a963990f | 1817 | return 0; |
d617408e LP |
1818 | |
1819 | fail: | |
5d1ce257 | 1820 | k = journal_put_error(j, r, path ?: prefix); |
d617408e LP |
1821 | if (k < 0) |
1822 | return k; | |
1823 | ||
1824 | return r; | |
a963990f LP |
1825 | } |
1826 | ||
d617408e | 1827 | static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) { |
5d1ce257 | 1828 | |
7fd1b19b | 1829 | _cleanup_closedir_ DIR *d = NULL; |
a963990f | 1830 | Directory *m; |
d617408e | 1831 | int r, k; |
a963990f LP |
1832 | |
1833 | assert(j); | |
a963990f | 1834 | |
5d1ce257 LP |
1835 | /* Adds a root directory to our set of directories to use. If the root directory is already in the set, we |
1836 | * update the inotify logic, and renumerate the directory entries. This call may hence be called to initially | |
1837 | * populate the set, as well as to update it later. */ | |
a963990f | 1838 | |
5d1ce257 LP |
1839 | if (p) { |
1840 | /* If there's a path specified, use it. */ | |
b6741478 | 1841 | |
858749f7 LP |
1842 | log_debug("Considering root directory '%s'.", p); |
1843 | ||
5d1ce257 LP |
1844 | if ((j->flags & SD_JOURNAL_RUNTIME_ONLY) && |
1845 | !path_has_prefix(j, p, "/run")) | |
1846 | return -EINVAL; | |
d617408e | 1847 | |
5d1ce257 LP |
1848 | if (j->prefix) |
1849 | p = strjoina(j->prefix, p); | |
1850 | ||
858749f7 LP |
1851 | r = directory_open(j, p, &d); |
1852 | if (r == -ENOENT && missing_ok) | |
1853 | return 0; | |
1854 | if (r < 0) { | |
1855 | log_debug_errno(r, "Failed to open root directory %s: %m", p); | |
5d1ce257 LP |
1856 | goto fail; |
1857 | } | |
1858 | } else { | |
254d1313 | 1859 | _cleanup_close_ int dfd = -EBADF; |
5d1ce257 LP |
1860 | |
1861 | /* If there's no path specified, then we use the top-level fd itself. We duplicate the fd here, since | |
1862 | * opendir() will take possession of the fd, and close it, which we don't want. */ | |
1863 | ||
1864 | p = "."; /* store this as "." in the directories hashmap */ | |
1865 | ||
1866 | dfd = fcntl(j->toplevel_fd, F_DUPFD_CLOEXEC, 3); | |
1867 | if (dfd < 0) { | |
1868 | r = -errno; | |
1869 | goto fail; | |
1870 | } | |
1871 | ||
8e06af80 | 1872 | d = take_fdopendir(&dfd); |
5d1ce257 LP |
1873 | if (!d) { |
1874 | r = -errno; | |
5d1ce257 LP |
1875 | goto fail; |
1876 | } | |
1877 | ||
1878 | rewinddir(d); | |
d617408e | 1879 | } |
a963990f LP |
1880 | |
1881 | m = hashmap_get(j->directories_by_path, p); | |
1882 | if (!m) { | |
1883 | m = new0(Directory, 1); | |
d617408e LP |
1884 | if (!m) { |
1885 | r = -ENOMEM; | |
1886 | goto fail; | |
1887 | } | |
a963990f LP |
1888 | |
1889 | m->is_root = true; | |
5d1ce257 | 1890 | |
a963990f LP |
1891 | m->path = strdup(p); |
1892 | if (!m->path) { | |
a963990f | 1893 | free(m); |
d617408e LP |
1894 | r = -ENOMEM; |
1895 | goto fail; | |
a963990f LP |
1896 | } |
1897 | ||
1898 | if (hashmap_put(j->directories_by_path, m->path, m) < 0) { | |
a963990f LP |
1899 | free(m->path); |
1900 | free(m); | |
d617408e LP |
1901 | r = -ENOMEM; |
1902 | goto fail; | |
a963990f LP |
1903 | } |
1904 | ||
313cefa1 | 1905 | j->current_invalidate_counter++; |
a963990f | 1906 | |
5ec76417 | 1907 | log_debug("Root directory %s added.", m->path); |
a963990f | 1908 | |
a50d7d43 | 1909 | } else if (!m->is_root) |
a963990f | 1910 | return 0; |
50f20cfd | 1911 | |
858749f7 LP |
1912 | directory_watch(j, m, dirfd(d), |
1913 | IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB|IN_DELETE| | |
1914 | IN_ONLYDIR); | |
a963990f | 1915 | |
858749f7 LP |
1916 | if (!j->no_new_files) |
1917 | directory_enumerate(j, m, d); | |
3fbf9cbb | 1918 | |
85210bff LP |
1919 | check_network(j, dirfd(d)); |
1920 | ||
a963990f | 1921 | return 0; |
d617408e LP |
1922 | |
1923 | fail: | |
5768d259 | 1924 | k = journal_put_error(j, r, p); |
d617408e LP |
1925 | if (k < 0) |
1926 | return k; | |
1927 | ||
1928 | return r; | |
a963990f LP |
1929 | } |
1930 | ||
b2b46f91 | 1931 | static void remove_directory(sd_journal *j, Directory *d) { |
a963990f LP |
1932 | assert(j); |
1933 | ||
1934 | if (d->wd > 0) { | |
1935 | hashmap_remove(j->directories_by_wd, INT_TO_PTR(d->wd)); | |
1936 | ||
1937 | if (j->inotify_fd >= 0) | |
98d4a4df | 1938 | (void) inotify_rm_watch(j->inotify_fd, d->wd); |
a963990f LP |
1939 | } |
1940 | ||
1941 | hashmap_remove(j->directories_by_path, d->path); | |
1942 | ||
1943 | if (d->is_root) | |
5ec76417 | 1944 | log_debug("Root directory %s removed.", d->path); |
a963990f | 1945 | else |
5ec76417 | 1946 | log_debug("Directory %s removed.", d->path); |
a963990f LP |
1947 | |
1948 | free(d->path); | |
1949 | free(d); | |
3fbf9cbb LP |
1950 | } |
1951 | ||
89739579 | 1952 | static int add_search_paths(sd_journal *j) { |
d617408e LP |
1953 | |
1954 | static const char search_paths[] = | |
a963990f LP |
1955 | "/run/log/journal\0" |
1956 | "/var/log/journal\0"; | |
50f20cfd LP |
1957 | |
1958 | assert(j); | |
50f20cfd | 1959 | |
a963990f LP |
1960 | /* We ignore most errors here, since the idea is to only open |
1961 | * what's actually accessible, and ignore the rest. */ | |
50f20cfd | 1962 | |
d617408e LP |
1963 | NULSTR_FOREACH(p, search_paths) |
1964 | (void) add_root_directory(j, p, true); | |
50f20cfd | 1965 | |
574b77ef MB |
1966 | if (!(j->flags & SD_JOURNAL_LOCAL_ONLY)) |
1967 | (void) add_root_directory(j, "/var/log/journal/remote", true); | |
1968 | ||
a963990f | 1969 | return 0; |
50f20cfd LP |
1970 | } |
1971 | ||
5302ebe1 | 1972 | static int add_current_paths(sd_journal *j) { |
5302ebe1 ZJS |
1973 | JournalFile *f; |
1974 | ||
1975 | assert(j); | |
1976 | assert(j->no_new_files); | |
1977 | ||
5d1ce257 | 1978 | /* Simply adds all directories for files we have open as directories. We don't expect errors here, so we |
5302ebe1 ZJS |
1979 | * treat them as fatal. */ |
1980 | ||
90e74a66 | 1981 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
c2b2df60 | 1982 | _cleanup_free_ char *dir = NULL; |
e9174f29 | 1983 | int r; |
5302ebe1 | 1984 | |
45519d13 LP |
1985 | r = path_extract_directory(f->path, &dir); |
1986 | if (r < 0) | |
1987 | return r; | |
5302ebe1 | 1988 | |
5d1ce257 | 1989 | r = add_directory(j, dir, NULL); |
d617408e | 1990 | if (r < 0) |
5302ebe1 | 1991 | return r; |
5302ebe1 ZJS |
1992 | } |
1993 | ||
1994 | return 0; | |
1995 | } | |
1996 | ||
a963990f | 1997 | static int allocate_inotify(sd_journal *j) { |
50f20cfd | 1998 | assert(j); |
50f20cfd | 1999 | |
a963990f LP |
2000 | if (j->inotify_fd < 0) { |
2001 | j->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
2002 | if (j->inotify_fd < 0) | |
2003 | return -errno; | |
2004 | } | |
50f20cfd | 2005 | |
cb306f5d | 2006 | return hashmap_ensure_allocated(&j->directories_by_wd, NULL); |
50f20cfd LP |
2007 | } |
2008 | ||
456aa879 | 2009 | static sd_journal *journal_new(int flags, const char *path, const char *namespace) { |
17c9aff8 | 2010 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
50f20cfd | 2011 | |
6f30a67a | 2012 | j = new(sd_journal, 1); |
a963990f LP |
2013 | if (!j) |
2014 | return NULL; | |
50f20cfd | 2015 | |
6f30a67a | 2016 | *j = (sd_journal) { |
e046719b | 2017 | .origin_id = origin_id_query(), |
6f30a67a LP |
2018 | .toplevel_fd = -EBADF, |
2019 | .inotify_fd = -EBADF, | |
2020 | .flags = flags, | |
2021 | .data_threshold = DEFAULT_DATA_THRESHOLD, | |
2022 | }; | |
50f20cfd | 2023 | |
7827b1a1 | 2024 | if (path) { |
16fefe90 ZJS |
2025 | char *t; |
2026 | ||
2027 | t = strdup(path); | |
2028 | if (!t) | |
17c9aff8 | 2029 | return NULL; |
16fefe90 ZJS |
2030 | |
2031 | if (flags & SD_JOURNAL_OS_ROOT) | |
2032 | j->prefix = t; | |
2033 | else | |
2034 | j->path = t; | |
7827b1a1 LP |
2035 | } |
2036 | ||
456aa879 LP |
2037 | if (namespace) { |
2038 | j->namespace = strdup(namespace); | |
2039 | if (!j->namespace) | |
2040 | return NULL; | |
2041 | } | |
2042 | ||
548f6937 | 2043 | j->files = ordered_hashmap_new(&path_hash_ops); |
5d4ba7f2 | 2044 | if (!j->files) |
17c9aff8 | 2045 | return NULL; |
5d4ba7f2 VC |
2046 | |
2047 | j->files_cache = ordered_hashmap_iterated_cache_new(j->files); | |
548f6937 | 2048 | j->directories_by_path = hashmap_new(&path_hash_ops); |
84168d80 | 2049 | j->mmap = mmap_cache_new(); |
5d4ba7f2 | 2050 | if (!j->files_cache || !j->directories_by_path || !j->mmap) |
17c9aff8 | 2051 | return NULL; |
6180fc61 | 2052 | |
17c9aff8 | 2053 | return TAKE_PTR(j); |
50f20cfd LP |
2054 | } |
2055 | ||
1aaa68f5 ZJS |
2056 | #define OPEN_ALLOWED_FLAGS \ |
2057 | (SD_JOURNAL_LOCAL_ONLY | \ | |
2058 | SD_JOURNAL_RUNTIME_ONLY | \ | |
456aa879 LP |
2059 | SD_JOURNAL_SYSTEM | \ |
2060 | SD_JOURNAL_CURRENT_USER | \ | |
2061 | SD_JOURNAL_ALL_NAMESPACES | \ | |
2062 | SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE) | |
1aaa68f5 | 2063 | |
456aa879 | 2064 | _public_ int sd_journal_open_namespace(sd_journal **ret, const char *namespace, int flags) { |
17c9aff8 | 2065 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
3fbf9cbb | 2066 | int r; |
87d2c1ff | 2067 | |
1ae464e0 | 2068 | assert_return(ret, -EINVAL); |
1aaa68f5 | 2069 | assert_return((flags & ~OPEN_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 2070 | |
456aa879 | 2071 | j = journal_new(flags, NULL, namespace); |
87d2c1ff LP |
2072 | if (!j) |
2073 | return -ENOMEM; | |
2074 | ||
89739579 | 2075 | r = add_search_paths(j); |
a963990f | 2076 | if (r < 0) |
17c9aff8 | 2077 | return r; |
50f20cfd | 2078 | |
17c9aff8 | 2079 | *ret = TAKE_PTR(j); |
a963990f | 2080 | return 0; |
a963990f | 2081 | } |
50f20cfd | 2082 | |
456aa879 LP |
2083 | _public_ int sd_journal_open(sd_journal **ret, int flags) { |
2084 | return sd_journal_open_namespace(ret, NULL, flags); | |
2085 | } | |
2086 | ||
1aaa68f5 ZJS |
2087 | #define OPEN_CONTAINER_ALLOWED_FLAGS \ |
2088 | (SD_JOURNAL_LOCAL_ONLY | SD_JOURNAL_SYSTEM) | |
2089 | ||
b6741478 LP |
2090 | _public_ int sd_journal_open_container(sd_journal **ret, const char *machine, int flags) { |
2091 | _cleanup_free_ char *root = NULL, *class = NULL; | |
17c9aff8 | 2092 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
b6741478 LP |
2093 | char *p; |
2094 | int r; | |
2095 | ||
68312977 | 2096 | /* This is deprecated, people should use machined's OpenMachineRootDirectory() call instead in |
2daa9cbd LP |
2097 | * combination with sd_journal_open_directory_fd(). */ |
2098 | ||
b6741478 LP |
2099 | assert_return(machine, -EINVAL); |
2100 | assert_return(ret, -EINVAL); | |
1aaa68f5 | 2101 | assert_return((flags & ~OPEN_CONTAINER_ALLOWED_FLAGS) == 0, -EINVAL); |
52ef5dd7 | 2102 | assert_return(hostname_is_valid(machine, 0), -EINVAL); |
b6741478 | 2103 | |
63c372cb | 2104 | p = strjoina("/run/systemd/machines/", machine); |
13df9c39 LP |
2105 | r = parse_env_file(NULL, p, |
2106 | "ROOT", &root, | |
2107 | "CLASS", &class); | |
b6741478 LP |
2108 | if (r == -ENOENT) |
2109 | return -EHOSTDOWN; | |
2110 | if (r < 0) | |
2111 | return r; | |
2112 | if (!root) | |
2113 | return -ENODATA; | |
2114 | ||
2115 | if (!streq_ptr(class, "container")) | |
2116 | return -EIO; | |
2117 | ||
456aa879 | 2118 | j = journal_new(flags, root, NULL); |
b6741478 LP |
2119 | if (!j) |
2120 | return -ENOMEM; | |
2121 | ||
89739579 | 2122 | r = add_search_paths(j); |
b6741478 | 2123 | if (r < 0) |
17c9aff8 | 2124 | return r; |
b6741478 | 2125 | |
17c9aff8 | 2126 | *ret = TAKE_PTR(j); |
b6741478 | 2127 | return 0; |
b6741478 LP |
2128 | } |
2129 | ||
1aaa68f5 | 2130 | #define OPEN_DIRECTORY_ALLOWED_FLAGS \ |
10752e82 ZJS |
2131 | (SD_JOURNAL_OS_ROOT | \ |
2132 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 2133 | |
a963990f | 2134 | _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int flags) { |
17c9aff8 | 2135 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
a963990f | 2136 | int r; |
87d2c1ff | 2137 | |
1ae464e0 TA |
2138 | assert_return(ret, -EINVAL); |
2139 | assert_return(path, -EINVAL); | |
1aaa68f5 | 2140 | assert_return((flags & ~OPEN_DIRECTORY_ALLOWED_FLAGS) == 0, -EINVAL); |
87d2c1ff | 2141 | |
456aa879 | 2142 | j = journal_new(flags, path, NULL); |
a963990f LP |
2143 | if (!j) |
2144 | return -ENOMEM; | |
3fbf9cbb | 2145 | |
d077390c LP |
2146 | if (flags & SD_JOURNAL_OS_ROOT) |
2147 | r = add_search_paths(j); | |
2148 | else | |
2149 | r = add_root_directory(j, path, false); | |
d617408e | 2150 | if (r < 0) |
17c9aff8 | 2151 | return r; |
87d2c1ff | 2152 | |
17c9aff8 | 2153 | *ret = TAKE_PTR(j); |
87d2c1ff | 2154 | return 0; |
a963990f | 2155 | } |
87d2c1ff | 2156 | |
5302ebe1 | 2157 | _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int flags) { |
17c9aff8 | 2158 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5302ebe1 ZJS |
2159 | int r; |
2160 | ||
1ae464e0 TA |
2161 | assert_return(ret, -EINVAL); |
2162 | assert_return(flags == 0, -EINVAL); | |
5302ebe1 | 2163 | |
456aa879 | 2164 | j = journal_new(flags, NULL, NULL); |
5302ebe1 ZJS |
2165 | if (!j) |
2166 | return -ENOMEM; | |
2167 | ||
2168 | STRV_FOREACH(path, paths) { | |
5d1ce257 | 2169 | r = add_any_file(j, -1, *path); |
d617408e | 2170 | if (r < 0) |
17c9aff8 | 2171 | return r; |
5302ebe1 ZJS |
2172 | } |
2173 | ||
2174 | j->no_new_files = true; | |
2175 | ||
17c9aff8 | 2176 | *ret = TAKE_PTR(j); |
5302ebe1 | 2177 | return 0; |
5d1ce257 LP |
2178 | } |
2179 | ||
1aaa68f5 | 2180 | #define OPEN_DIRECTORY_FD_ALLOWED_FLAGS \ |
10752e82 ZJS |
2181 | (SD_JOURNAL_OS_ROOT | \ |
2182 | SD_JOURNAL_SYSTEM | SD_JOURNAL_CURRENT_USER ) | |
1aaa68f5 | 2183 | |
5d1ce257 | 2184 | _public_ int sd_journal_open_directory_fd(sd_journal **ret, int fd, int flags) { |
17c9aff8 | 2185 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5d1ce257 LP |
2186 | struct stat st; |
2187 | int r; | |
2188 | ||
2189 | assert_return(ret, -EINVAL); | |
2190 | assert_return(fd >= 0, -EBADF); | |
1aaa68f5 | 2191 | assert_return((flags & ~OPEN_DIRECTORY_FD_ALLOWED_FLAGS) == 0, -EINVAL); |
5d1ce257 LP |
2192 | |
2193 | if (fstat(fd, &st) < 0) | |
2194 | return -errno; | |
2195 | ||
2196 | if (!S_ISDIR(st.st_mode)) | |
2197 | return -EBADFD; | |
2198 | ||
456aa879 | 2199 | j = journal_new(flags, NULL, NULL); |
5d1ce257 LP |
2200 | if (!j) |
2201 | return -ENOMEM; | |
2202 | ||
2203 | j->toplevel_fd = fd; | |
2204 | ||
d077390c LP |
2205 | if (flags & SD_JOURNAL_OS_ROOT) |
2206 | r = add_search_paths(j); | |
2207 | else | |
2208 | r = add_root_directory(j, NULL, false); | |
5d1ce257 | 2209 | if (r < 0) |
17c9aff8 | 2210 | return r; |
5d1ce257 | 2211 | |
17c9aff8 | 2212 | *ret = TAKE_PTR(j); |
5d1ce257 | 2213 | return 0; |
5d1ce257 LP |
2214 | } |
2215 | ||
2216 | _public_ int sd_journal_open_files_fd(sd_journal **ret, int fds[], unsigned n_fds, int flags) { | |
5d1ce257 | 2217 | JournalFile *f; |
17c9aff8 | 2218 | _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
5d1ce257 LP |
2219 | int r; |
2220 | ||
2221 | assert_return(ret, -EINVAL); | |
2222 | assert_return(n_fds > 0, -EBADF); | |
2223 | assert_return(flags == 0, -EINVAL); | |
2224 | ||
456aa879 | 2225 | j = journal_new(flags, NULL, NULL); |
5d1ce257 LP |
2226 | if (!j) |
2227 | return -ENOMEM; | |
2228 | ||
abcdc02c | 2229 | for (unsigned i = 0; i < n_fds; i++) { |
5d1ce257 LP |
2230 | struct stat st; |
2231 | ||
2232 | if (fds[i] < 0) { | |
2233 | r = -EBADF; | |
2234 | goto fail; | |
2235 | } | |
2236 | ||
2237 | if (fstat(fds[i], &st) < 0) { | |
2238 | r = -errno; | |
2239 | goto fail; | |
2240 | } | |
2241 | ||
3cc44114 LP |
2242 | r = stat_verify_regular(&st); |
2243 | if (r < 0) | |
5d1ce257 | 2244 | goto fail; |
5d1ce257 LP |
2245 | |
2246 | r = add_any_file(j, fds[i], NULL); | |
2247 | if (r < 0) | |
2248 | goto fail; | |
2249 | } | |
2250 | ||
2251 | j->no_new_files = true; | |
2252 | j->no_inotify = true; | |
5302ebe1 | 2253 | |
17c9aff8 | 2254 | *ret = TAKE_PTR(j); |
5d1ce257 LP |
2255 | return 0; |
2256 | ||
2257 | fail: | |
f8e2f4d6 | 2258 | /* If we fail, make sure we don't take possession of the files we managed to make use of successfully, and they |
5d1ce257 | 2259 | * remain open */ |
90e74a66 | 2260 | ORDERED_HASHMAP_FOREACH(f, j->files) |
5d1ce257 LP |
2261 | f->close_fd = false; |
2262 | ||
5302ebe1 ZJS |
2263 | return r; |
2264 | } | |
2265 | ||
a5344d2c | 2266 | _public_ void sd_journal_close(sd_journal *j) { |
a963990f | 2267 | Directory *d; |
34af7494 | 2268 | Prioq *p; |
a963990f | 2269 | |
e046719b | 2270 | if (!j || journal_origin_changed(j)) |
a5344d2c | 2271 | return; |
87d2c1ff | 2272 | |
34af7494 LP |
2273 | while ((p = hashmap_first(j->newest_by_boot_id))) |
2274 | journal_file_unlink_newest_by_bood_id(j, prioq_peek(p)); | |
2275 | hashmap_free(j->newest_by_boot_id); | |
2276 | ||
54b1da83 LP |
2277 | sd_journal_flush_matches(j); |
2278 | ||
f9168190 | 2279 | ordered_hashmap_free_with_destructor(j->files, journal_file_close); |
5d4ba7f2 | 2280 | iterated_cache_free(j->files_cache); |
260a2be4 | 2281 | |
a963990f LP |
2282 | while ((d = hashmap_first(j->directories_by_path))) |
2283 | remove_directory(j, d); | |
260a2be4 | 2284 | |
a963990f LP |
2285 | while ((d = hashmap_first(j->directories_by_wd))) |
2286 | remove_directory(j, d); | |
87d2c1ff | 2287 | |
a963990f LP |
2288 | hashmap_free(j->directories_by_path); |
2289 | hashmap_free(j->directories_by_wd); | |
1cc101f1 | 2290 | |
03e334a1 | 2291 | safe_close(j->inotify_fd); |
50f20cfd | 2292 | |
bf807d4d | 2293 | if (j->mmap) { |
3a595c59 | 2294 | mmap_cache_stats_log_debug(j->mmap); |
16e9f408 | 2295 | mmap_cache_unref(j->mmap); |
bf807d4d | 2296 | } |
16e9f408 | 2297 | |
ec1d2909 | 2298 | hashmap_free_free(j->errors); |
5768d259 | 2299 | |
7827b1a1 | 2300 | free(j->path); |
89739579 | 2301 | free(j->prefix); |
456aa879 | 2302 | free(j->namespace); |
3c1668da | 2303 | free(j->unique_field); |
eb86030e | 2304 | free(j->fields_buffer); |
87d2c1ff LP |
2305 | free(j); |
2306 | } | |
3fbf9cbb | 2307 | |
34af7494 LP |
2308 | static void journal_file_unlink_newest_by_bood_id(sd_journal *j, JournalFile *f) { |
2309 | JournalFile *nf; | |
2310 | Prioq *p; | |
2311 | ||
2312 | assert(j); | |
2313 | assert(f); | |
2314 | ||
2315 | if (f->newest_boot_id_prioq_idx == PRIOQ_IDX_NULL) /* not linked currently, hence this is a NOP */ | |
2316 | return; | |
2317 | ||
2318 | assert_se(p = hashmap_get(j->newest_by_boot_id, &f->newest_boot_id)); | |
2319 | assert_se(prioq_remove(p, f, &f->newest_boot_id_prioq_idx) > 0); | |
2320 | ||
2321 | nf = prioq_peek(p); | |
2322 | if (nf) | |
2323 | /* There's still a member in the prioq? Then make sure the hashmap key now points to its | |
2324 | * .newest_boot_id field (and not ours!). Not we only replace the memory of the key here, the | |
2325 | * value of the key (and the data associated with it) remain the same. */ | |
e28d8251 | 2326 | assert_se(hashmap_replace(j->newest_by_boot_id, &nf->newest_boot_id, p) >= 0); |
34af7494 LP |
2327 | else { |
2328 | assert_se(hashmap_remove(j->newest_by_boot_id, &f->newest_boot_id) == p); | |
2329 | prioq_free(p); | |
2330 | } | |
2331 | ||
2332 | f->newest_boot_id_prioq_idx = PRIOQ_IDX_NULL; | |
2333 | } | |
2334 | ||
2335 | static int journal_file_newest_monotonic_compare(const void *a, const void *b) { | |
2336 | const JournalFile *x = a, *y = b; | |
2337 | ||
2338 | return -CMP(x->newest_monotonic_usec, y->newest_monotonic_usec); /* Invert order, we want newest first! */ | |
2339 | } | |
2340 | ||
2341 | static int journal_file_reshuffle_newest_by_boot_id(sd_journal *j, JournalFile *f) { | |
2342 | Prioq *p; | |
2343 | int r; | |
2344 | ||
2345 | assert(j); | |
2346 | assert(f); | |
2347 | ||
2348 | p = hashmap_get(j->newest_by_boot_id, &f->newest_boot_id); | |
2349 | if (p) { | |
2350 | /* There's already a priority queue for this boot ID */ | |
2351 | ||
2352 | if (f->newest_boot_id_prioq_idx == PRIOQ_IDX_NULL) { | |
2353 | r = prioq_put(p, f, &f->newest_boot_id_prioq_idx); /* Insert if we aren't in there yet */ | |
2354 | if (r < 0) | |
2355 | return r; | |
2356 | } else | |
2357 | prioq_reshuffle(p, f, &f->newest_boot_id_prioq_idx); /* Reshuffle otherwise */ | |
2358 | ||
2359 | } else { | |
2360 | _cleanup_(prioq_freep) Prioq *q = NULL; | |
2361 | ||
2362 | /* No priority queue yet, then allocate one */ | |
2363 | ||
2364 | assert(f->newest_boot_id_prioq_idx == PRIOQ_IDX_NULL); /* we can't be a member either */ | |
2365 | ||
2366 | q = prioq_new(journal_file_newest_monotonic_compare); | |
2367 | if (!q) | |
2368 | return -ENOMEM; | |
2369 | ||
2370 | r = prioq_put(q, f, &f->newest_boot_id_prioq_idx); | |
2371 | if (r < 0) | |
2372 | return r; | |
2373 | ||
2374 | r = hashmap_ensure_put(&j->newest_by_boot_id, &id128_hash_ops, &f->newest_boot_id, q); | |
f11de491 YW |
2375 | if (r < 0) { |
2376 | f->newest_boot_id_prioq_idx = PRIOQ_IDX_NULL; | |
34af7494 | 2377 | return r; |
f11de491 | 2378 | } |
34af7494 LP |
2379 | |
2380 | TAKE_PTR(q); | |
2381 | } | |
2382 | ||
2383 | return 0; | |
2384 | } | |
2385 | ||
2386 | static int journal_file_read_tail_timestamp(sd_journal *j, JournalFile *f) { | |
2387 | uint64_t offset, mo, rt; | |
2388 | sd_id128_t id; | |
2389 | ObjectType type; | |
2390 | Object *o; | |
2391 | int r; | |
2392 | ||
2393 | assert(j); | |
2394 | assert(f); | |
2395 | assert(f->header); | |
2396 | ||
2397 | /* Tries to read the timestamp of the most recently written entry. */ | |
2398 | ||
2399 | r = journal_file_fstat(f); | |
2400 | if (r < 0) | |
2401 | return r; | |
2402 | if (f->newest_mtime == timespec_load(&f->last_stat.st_mtim)) | |
2403 | return 0; /* mtime didn't change since last time, don't bother */ | |
2404 | ||
2405 | if (JOURNAL_HEADER_CONTAINS(f->header, tail_entry_offset)) { | |
2406 | offset = le64toh(READ_NOW(f->header->tail_entry_offset)); | |
2407 | type = OBJECT_ENTRY; | |
2408 | } else { | |
2409 | offset = le64toh(READ_NOW(f->header->tail_object_offset)); | |
2410 | type = OBJECT_UNUSED; | |
2411 | } | |
2412 | if (offset == 0) | |
2413 | return -ENODATA; /* not a single object/entry, hence no tail timestamp */ | |
2414 | ||
2415 | /* Move to the last object in the journal file, in the hope it is an entry (which it usually will | |
2416 | * be). If we lack the "tail_entry_offset" field in the header, we specify the type as OBJECT_UNUSED | |
2417 | * here, since we cannot be sure what the last object will be, and want no noisy logging if it isn't | |
2418 | * an entry. We instead check after figuring out the pointer. */ | |
2419 | r = journal_file_move_to_object(f, type, offset, &o); | |
2420 | if (r < 0) { | |
2421 | log_debug_errno(r, "Failed to move to last object in journal file, ignoring: %m"); | |
2422 | o = NULL; | |
2423 | } | |
2424 | if (o && o->object.type == OBJECT_ENTRY) { | |
2425 | /* Yay, last object is an entry, let's use the data. */ | |
2426 | id = o->entry.boot_id; | |
2427 | mo = le64toh(o->entry.monotonic); | |
2428 | rt = le64toh(o->entry.realtime); | |
2429 | } else { | |
2430 | /* So the object is not an entry or we couldn't access it? In that case, let's read the most | |
2431 | * recent entry timestamps from the header. It's equally good. Unfortunately though, in old | |
2432 | * versions of the journal the boot ID in the header doesn't have to match the monotonic | |
2433 | * timestamp of the header. Let's check the header flag that indicates whether this strictly | |
2434 | * matches first hence, before using the data. */ | |
2435 | ||
2436 | if (JOURNAL_HEADER_TAIL_ENTRY_BOOT_ID(f->header) && f->header->state == STATE_ARCHIVED) { | |
2437 | mo = le64toh(f->header->tail_entry_monotonic); | |
2438 | rt = le64toh(f->header->tail_entry_realtime); | |
2439 | id = f->header->tail_entry_boot_id; | |
2440 | ||
2441 | /* Some superficial checking if what we read makes sense. Note that we only do this | |
2442 | * when reading the timestamps from the Header object, but not when reading them from | |
2443 | * the most recent entry object, because in that case journal_file_move_to_object() | |
2444 | * already validated them. */ | |
2445 | if (!VALID_MONOTONIC(mo) || !VALID_REALTIME(rt)) | |
2446 | return -ENODATA; | |
2447 | ||
2448 | } else { | |
2449 | /* Otherwise let's find the last entry manually (this possibly means traversing the | |
2450 | * chain of entry arrays, till the end */ | |
2451 | r = journal_file_next_entry(f, 0, DIRECTION_UP, &o, NULL); | |
2452 | if (r < 0) | |
2453 | return r; | |
3b1b0f1a YW |
2454 | if (r == 0) |
2455 | return -ENODATA; | |
34af7494 LP |
2456 | |
2457 | id = o->entry.boot_id; | |
2458 | mo = le64toh(o->entry.monotonic); | |
2459 | rt = le64toh(o->entry.realtime); | |
2460 | } | |
2461 | } | |
2462 | ||
2463 | if (mo > rt) /* monotonic clock is further ahead than realtime? that's weird, refuse to use the data */ | |
2464 | return -ENODATA; | |
2465 | ||
2466 | if (!sd_id128_equal(f->newest_boot_id, id)) | |
2467 | journal_file_unlink_newest_by_bood_id(j, f); | |
2468 | ||
2469 | f->newest_boot_id = id; | |
2470 | f->newest_monotonic_usec = mo; | |
2471 | f->newest_realtime_usec = rt; | |
2472 | f->newest_machine_id = f->header->machine_id; | |
2473 | f->newest_mtime = timespec_load(&f->last_stat.st_mtim); | |
2474 | ||
2475 | r = journal_file_reshuffle_newest_by_boot_id(j, f); | |
2476 | if (r < 0) | |
2477 | return r; | |
2478 | ||
2479 | return 0; | |
2480 | } | |
2481 | ||
a5344d2c | 2482 | _public_ int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { |
3fbf9cbb | 2483 | JournalFile *f; |
834f759c | 2484 | Object *o; |
3fbf9cbb LP |
2485 | int r; |
2486 | ||
1ae464e0 | 2487 | assert_return(j, -EINVAL); |
e046719b | 2488 | assert_return(!journal_origin_changed(j), -ECHILD); |
3fbf9cbb LP |
2489 | |
2490 | f = j->current_file; | |
2491 | if (!f) | |
de190aef | 2492 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2493 | if (f->current_offset <= 0) |
de190aef | 2494 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2495 | |
de190aef | 2496 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2497 | if (r < 0) |
2498 | return r; | |
2499 | ||
834f759c LP |
2500 | uint64_t t = le64toh(o->entry.realtime); |
2501 | if (!VALID_REALTIME(t)) | |
2502 | return -EBADMSG; | |
2503 | ||
2504 | if (ret) | |
2505 | *ret = t; | |
2506 | ||
de190aef | 2507 | return 0; |
3fbf9cbb LP |
2508 | } |
2509 | ||
a5344d2c | 2510 | _public_ int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id) { |
3fbf9cbb | 2511 | JournalFile *f; |
404803e6 | 2512 | Object *o; |
3fbf9cbb | 2513 | int r; |
3fbf9cbb | 2514 | |
1ae464e0 | 2515 | assert_return(j, -EINVAL); |
e046719b | 2516 | assert_return(!journal_origin_changed(j), -ECHILD); |
3fbf9cbb LP |
2517 | |
2518 | f = j->current_file; | |
2519 | if (!f) | |
de190aef | 2520 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2521 | if (f->current_offset <= 0) |
de190aef | 2522 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2523 | |
de190aef | 2524 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2525 | if (r < 0) |
2526 | return r; | |
2527 | ||
de190aef LP |
2528 | if (ret_boot_id) |
2529 | *ret_boot_id = o->entry.boot_id; | |
2530 | else { | |
d4739bc4 VC |
2531 | sd_id128_t id; |
2532 | ||
de190aef LP |
2533 | r = sd_id128_get_boot(&id); |
2534 | if (r < 0) | |
2535 | return r; | |
3fbf9cbb | 2536 | |
de190aef | 2537 | if (!sd_id128_equal(id, o->entry.boot_id)) |
df50185b | 2538 | return -ESTALE; |
de190aef | 2539 | } |
3fbf9cbb | 2540 | |
404803e6 LP |
2541 | uint64_t t = le64toh(o->entry.monotonic); |
2542 | if (!VALID_MONOTONIC(t)) | |
2543 | return -EBADMSG; | |
2544 | ||
14a65d65 | 2545 | if (ret) |
404803e6 | 2546 | *ret = t; |
14a65d65 | 2547 | |
de190aef | 2548 | return 0; |
3fbf9cbb LP |
2549 | } |
2550 | ||
b1712fab LP |
2551 | _public_ int sd_journal_get_seqnum( |
2552 | sd_journal *j, | |
2553 | uint64_t *ret_seqnum, | |
2554 | sd_id128_t *ret_seqnum_id) { | |
2555 | ||
2556 | JournalFile *f; | |
2557 | Object *o; | |
2558 | int r; | |
2559 | ||
2560 | assert_return(j, -EINVAL); | |
e046719b | 2561 | assert_return(!journal_origin_changed(j), -ECHILD); |
b1712fab LP |
2562 | |
2563 | f = j->current_file; | |
2564 | if (!f) | |
2565 | return -EADDRNOTAVAIL; | |
2566 | ||
2567 | if (f->current_offset <= 0) | |
2568 | return -EADDRNOTAVAIL; | |
2569 | ||
2570 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); | |
2571 | if (r < 0) | |
2572 | return r; | |
2573 | ||
2574 | if (ret_seqnum_id) | |
2575 | *ret_seqnum_id = f->header->seqnum_id; | |
2576 | if (ret_seqnum) | |
2577 | *ret_seqnum = le64toh(o->entry.seqnum); | |
2578 | ||
2579 | return 0; | |
2580 | } | |
2581 | ||
362a3f81 | 2582 | static bool field_is_valid(const char *field) { |
362a3f81 LP |
2583 | assert(field); |
2584 | ||
2585 | if (isempty(field)) | |
2586 | return false; | |
2587 | ||
2588 | if (startswith(field, "__")) | |
2589 | return false; | |
2590 | ||
abcdc02c | 2591 | for (const char *p = field; *p; p++) { |
362a3f81 LP |
2592 | |
2593 | if (*p == '_') | |
2594 | continue; | |
2595 | ||
2596 | if (*p >= 'A' && *p <= 'Z') | |
2597 | continue; | |
2598 | ||
ff25d338 | 2599 | if (ascii_isdigit(*p)) |
362a3f81 LP |
2600 | continue; |
2601 | ||
2602 | return false; | |
2603 | } | |
2604 | ||
2605 | return true; | |
2606 | } | |
2607 | ||
a5344d2c | 2608 | _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *size) { |
3fbf9cbb | 2609 | JournalFile *f; |
3fbf9cbb | 2610 | size_t field_length; |
3fbf9cbb | 2611 | Object *o; |
a1640191 | 2612 | int r; |
3fbf9cbb | 2613 | |
1ae464e0 | 2614 | assert_return(j, -EINVAL); |
e046719b | 2615 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 TA |
2616 | assert_return(field, -EINVAL); |
2617 | assert_return(data, -EINVAL); | |
2618 | assert_return(size, -EINVAL); | |
2619 | assert_return(field_is_valid(field), -EINVAL); | |
3fbf9cbb LP |
2620 | |
2621 | f = j->current_file; | |
2622 | if (!f) | |
de190aef | 2623 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2624 | |
2625 | if (f->current_offset <= 0) | |
de190aef | 2626 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2627 | |
de190aef | 2628 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2629 | if (r < 0) |
2630 | return r; | |
2631 | ||
2632 | field_length = strlen(field); | |
2633 | ||
a9089a66 | 2634 | uint64_t n = journal_file_entry_n_items(f, o); |
abcdc02c | 2635 | for (uint64_t i = 0; i < n; i++) { |
0e35afff DDM |
2636 | uint64_t p; |
2637 | void *d; | |
2638 | size_t l; | |
3fbf9cbb | 2639 | |
a9089a66 | 2640 | p = journal_file_entry_item_object_offset(f, o, i); |
0e35afff DDM |
2641 | r = journal_file_data_payload(f, NULL, p, field, field_length, j->data_threshold, &d, &l); |
2642 | if (r == 0) | |
a1640191 | 2643 | goto next; |
df207ccb DDM |
2644 | if (IN_SET(r, -EADDRNOTAVAIL, -EBADMSG)) { |
2645 | log_debug_errno(r, "Entry item %"PRIu64" data object is bad, skipping over it: %m", i); | |
a1640191 | 2646 | goto next; |
8a799bed | 2647 | } |
3fbf9cbb LP |
2648 | if (r < 0) |
2649 | return r; | |
2650 | ||
0e35afff DDM |
2651 | *data = d; |
2652 | *size = l; | |
3fbf9cbb | 2653 | |
0e35afff | 2654 | return 0; |
a1640191 YW |
2655 | |
2656 | next: | |
2657 | /* journal_file_data_payload() may clear or overwrite cached object. */ | |
2658 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); | |
2659 | if (r < 0) | |
2660 | return r; | |
3fbf9cbb LP |
2661 | } |
2662 | ||
de190aef | 2663 | return -ENOENT; |
3fbf9cbb LP |
2664 | } |
2665 | ||
a5344d2c | 2666 | _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *size) { |
3fbf9cbb | 2667 | JournalFile *f; |
3fbf9cbb | 2668 | Object *o; |
5a94a2bf | 2669 | int r; |
3fbf9cbb | 2670 | |
1ae464e0 | 2671 | assert_return(j, -EINVAL); |
e046719b | 2672 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 TA |
2673 | assert_return(data, -EINVAL); |
2674 | assert_return(size, -EINVAL); | |
3fbf9cbb LP |
2675 | |
2676 | f = j->current_file; | |
2677 | if (!f) | |
de190aef | 2678 | return -EADDRNOTAVAIL; |
3fbf9cbb LP |
2679 | |
2680 | if (f->current_offset <= 0) | |
de190aef | 2681 | return -EADDRNOTAVAIL; |
3fbf9cbb | 2682 | |
de190aef | 2683 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); |
3fbf9cbb LP |
2684 | if (r < 0) |
2685 | return r; | |
2686 | ||
a9089a66 | 2687 | for (uint64_t n = journal_file_entry_n_items(f, o); j->current_field < n; j->current_field++) { |
5a94a2bf | 2688 | uint64_t p; |
0e35afff DDM |
2689 | void *d; |
2690 | size_t l; | |
3fbf9cbb | 2691 | |
a9089a66 | 2692 | p = journal_file_entry_item_object_offset(f, o, j->current_field); |
0e35afff | 2693 | r = journal_file_data_payload(f, NULL, p, NULL, 0, j->data_threshold, &d, &l); |
df207ccb DDM |
2694 | if (IN_SET(r, -EADDRNOTAVAIL, -EBADMSG)) { |
2695 | log_debug_errno(r, "Entry item %"PRIu64" data object is bad, skipping over it: %m", j->current_field); | |
a1640191 | 2696 | goto next; |
5a94a2bf DDM |
2697 | } |
2698 | if (r < 0) | |
2699 | return r; | |
0e35afff | 2700 | assert(r > 0); |
3fbf9cbb | 2701 | |
0e35afff DDM |
2702 | *data = d; |
2703 | *size = l; | |
3fbf9cbb | 2704 | |
5a94a2bf | 2705 | j->current_field++; |
3fbf9cbb | 2706 | |
5a94a2bf | 2707 | return 1; |
a1640191 YW |
2708 | |
2709 | next: | |
2710 | /* journal_file_data_payload() may clear or overwrite cached object. */ | |
2711 | r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o); | |
2712 | if (r < 0) | |
2713 | return r; | |
5a94a2bf DDM |
2714 | } |
2715 | ||
2716 | return 0; | |
3fbf9cbb | 2717 | } |
c2373f84 | 2718 | |
76cbafcd ZJS |
2719 | _public_ int sd_journal_enumerate_available_data(sd_journal *j, const void **data, size_t *size) { |
2720 | for (;;) { | |
2721 | int r; | |
2722 | ||
2723 | r = sd_journal_enumerate_data(j, data, size); | |
2724 | if (r >= 0) | |
2725 | return r; | |
2726 | if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r)) | |
2727 | return r; | |
2728 | j->current_field++; /* Try with the next field */ | |
2729 | } | |
2730 | } | |
2731 | ||
a5344d2c | 2732 | _public_ void sd_journal_restart_data(sd_journal *j) { |
e046719b | 2733 | if (!j || journal_origin_changed(j)) |
a5344d2c | 2734 | return; |
8725d60a LP |
2735 | |
2736 | j->current_field = 0; | |
c2373f84 | 2737 | } |
50f20cfd | 2738 | |
858749f7 LP |
2739 | static int reiterate_all_paths(sd_journal *j) { |
2740 | assert(j); | |
2741 | ||
2742 | if (j->no_new_files) | |
2743 | return add_current_paths(j); | |
2744 | ||
2745 | if (j->flags & SD_JOURNAL_OS_ROOT) | |
2746 | return add_search_paths(j); | |
2747 | ||
2748 | if (j->toplevel_fd >= 0) | |
2749 | return add_root_directory(j, NULL, false); | |
2750 | ||
2751 | if (j->path) | |
2752 | return add_root_directory(j, j->path, true); | |
2753 | ||
2754 | return add_search_paths(j); | |
2755 | } | |
2756 | ||
a5344d2c | 2757 | _public_ int sd_journal_get_fd(sd_journal *j) { |
a963990f LP |
2758 | int r; |
2759 | ||
1ae464e0 | 2760 | assert_return(j, -EINVAL); |
e046719b | 2761 | assert_return(!journal_origin_changed(j), -ECHILD); |
50f20cfd | 2762 | |
5d1ce257 LP |
2763 | if (j->no_inotify) |
2764 | return -EMEDIUMTYPE; | |
2765 | ||
a963990f LP |
2766 | if (j->inotify_fd >= 0) |
2767 | return j->inotify_fd; | |
2768 | ||
2769 | r = allocate_inotify(j); | |
2770 | if (r < 0) | |
2771 | return r; | |
2772 | ||
858749f7 | 2773 | log_debug("Reiterating files to get inotify watches established."); |
5d1ce257 | 2774 | |
858749f7 LP |
2775 | /* Iterate through all dirs again, to add them to the inotify */ |
2776 | r = reiterate_all_paths(j); | |
a963990f LP |
2777 | if (r < 0) |
2778 | return r; | |
2779 | ||
50f20cfd LP |
2780 | return j->inotify_fd; |
2781 | } | |
2782 | ||
ee531d94 LP |
2783 | _public_ int sd_journal_get_events(sd_journal *j) { |
2784 | int fd; | |
2785 | ||
1ae464e0 | 2786 | assert_return(j, -EINVAL); |
e046719b | 2787 | assert_return(!journal_origin_changed(j), -ECHILD); |
ee531d94 LP |
2788 | |
2789 | fd = sd_journal_get_fd(j); | |
2790 | if (fd < 0) | |
2791 | return fd; | |
2792 | ||
2793 | return POLLIN; | |
2794 | } | |
2795 | ||
39c155ea LP |
2796 | _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) { |
2797 | int fd; | |
2798 | ||
1ae464e0 | 2799 | assert_return(j, -EINVAL); |
e046719b | 2800 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 | 2801 | assert_return(timeout_usec, -EINVAL); |
39c155ea LP |
2802 | |
2803 | fd = sd_journal_get_fd(j); | |
2804 | if (fd < 0) | |
2805 | return fd; | |
2806 | ||
2807 | if (!j->on_network) { | |
f5fbe71d | 2808 | *timeout_usec = UINT64_MAX; |
39c155ea LP |
2809 | return 0; |
2810 | } | |
2811 | ||
2812 | /* If we are on the network we need to regularly check for | |
2813 | * changes manually */ | |
2814 | ||
2815 | *timeout_usec = j->last_process_usec + JOURNAL_FILES_RECHECK_USEC; | |
2816 | return 1; | |
2817 | } | |
2818 | ||
858749f7 LP |
2819 | static void process_q_overflow(sd_journal *j) { |
2820 | JournalFile *f; | |
2821 | Directory *m; | |
858749f7 LP |
2822 | |
2823 | assert(j); | |
2824 | ||
2825 | /* When the inotify queue overruns we need to enumerate and re-validate all journal files to bring our list | |
2826 | * back in sync with what's on disk. For this we pick a new generation counter value. It'll be assigned to all | |
2827 | * journal files we encounter. All journal files and all directories that don't carry it after reenumeration | |
2828 | * are subject for unloading. */ | |
2829 | ||
2830 | log_debug("Inotify queue overrun, reiterating everything."); | |
2831 | ||
2832 | j->generation++; | |
2833 | (void) reiterate_all_paths(j); | |
2834 | ||
90e74a66 | 2835 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
858749f7 LP |
2836 | |
2837 | if (f->last_seen_generation == j->generation) | |
2838 | continue; | |
2839 | ||
2840 | log_debug("File '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2841 | remove_file_real(j, f); | |
2842 | } | |
2843 | ||
90e74a66 | 2844 | HASHMAP_FOREACH(m, j->directories_by_path) { |
858749f7 LP |
2845 | |
2846 | if (m->last_seen_generation == j->generation) | |
2847 | continue; | |
2848 | ||
2849 | if (m->is_root) /* Never GC root directories */ | |
2850 | continue; | |
2851 | ||
2852 | log_debug("Directory '%s' hasn't been seen in this enumeration, removing.", f->path); | |
2853 | remove_directory(j, m); | |
2854 | } | |
2855 | ||
2856 | log_debug("Reiteration complete."); | |
2857 | } | |
2858 | ||
31e99dd2 | 2859 | static void process_inotify_event(sd_journal *j, const struct inotify_event *e) { |
a963990f | 2860 | Directory *d; |
50f20cfd LP |
2861 | |
2862 | assert(j); | |
2863 | assert(e); | |
2864 | ||
858749f7 LP |
2865 | if (e->mask & IN_Q_OVERFLOW) { |
2866 | process_q_overflow(j); | |
2867 | return; | |
2868 | } | |
2869 | ||
50f20cfd | 2870 | /* Is this a subdirectory we watch? */ |
a963990f LP |
2871 | d = hashmap_get(j->directories_by_wd, INT_TO_PTR(e->wd)); |
2872 | if (d) { | |
de2c3907 LP |
2873 | if (!(e->mask & IN_ISDIR) && e->len > 0 && |
2874 | (endswith(e->name, ".journal") || | |
2875 | endswith(e->name, ".journal~"))) { | |
50f20cfd LP |
2876 | |
2877 | /* Event for a journal file */ | |
2878 | ||
d617408e | 2879 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
fc1813c0 | 2880 | (void) add_file_by_name(j, d->path, e->name); |
d617408e | 2881 | else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) |
8e7e4a73 | 2882 | (void) remove_file_by_name(j, d->path, e->name); |
50f20cfd | 2883 | |
a963990f | 2884 | } else if (!d->is_root && e->len == 0) { |
50f20cfd | 2885 | |
a963990f | 2886 | /* Event for a subdirectory */ |
50f20cfd | 2887 | |
b2b46f91 TA |
2888 | if (e->mask & (IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT)) |
2889 | remove_directory(j, d); | |
50f20cfd | 2890 | |
a9be0692 | 2891 | } else if (d->is_root && (e->mask & IN_ISDIR) && e->len > 0 && id128_is_valid(e->name)) { |
50f20cfd | 2892 | |
a963990f | 2893 | /* Event for root directory */ |
50f20cfd | 2894 | |
d617408e LP |
2895 | if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) |
2896 | (void) add_directory(j, d->path, e->name); | |
50f20cfd LP |
2897 | } |
2898 | ||
2899 | return; | |
2900 | } | |
2901 | ||
2902 | if (e->mask & IN_IGNORED) | |
2903 | return; | |
2904 | ||
a9be0692 | 2905 | log_debug("Unexpected inotify event."); |
50f20cfd LP |
2906 | } |
2907 | ||
a963990f LP |
2908 | static int determine_change(sd_journal *j) { |
2909 | bool b; | |
2910 | ||
2911 | assert(j); | |
2912 | ||
2913 | b = j->current_invalidate_counter != j->last_invalidate_counter; | |
2914 | j->last_invalidate_counter = j->current_invalidate_counter; | |
2915 | ||
2916 | return b ? SD_JOURNAL_INVALIDATE : SD_JOURNAL_APPEND; | |
2917 | } | |
2918 | ||
a5344d2c | 2919 | _public_ int sd_journal_process(sd_journal *j) { |
a963990f | 2920 | bool got_something = false; |
50f20cfd | 2921 | |
1ae464e0 | 2922 | assert_return(j, -EINVAL); |
e046719b | 2923 | assert_return(!journal_origin_changed(j), -ECHILD); |
50f20cfd | 2924 | |
10c4d640 LP |
2925 | if (j->inotify_fd < 0) /* We have no inotify fd yet? Then there's noting to process. */ |
2926 | return 0; | |
2927 | ||
39c155ea | 2928 | j->last_process_usec = now(CLOCK_MONOTONIC); |
f9346444 | 2929 | j->last_invalidate_counter = j->current_invalidate_counter; |
39c155ea | 2930 | |
50f20cfd | 2931 | for (;;) { |
0254e944 | 2932 | union inotify_event_buffer buffer; |
50f20cfd LP |
2933 | ssize_t l; |
2934 | ||
0254e944 | 2935 | l = read(j->inotify_fd, &buffer, sizeof(buffer)); |
50f20cfd | 2936 | if (l < 0) { |
8add30a0 | 2937 | if (ERRNO_IS_TRANSIENT(errno)) |
a963990f | 2938 | return got_something ? determine_change(j) : SD_JOURNAL_NOP; |
50f20cfd LP |
2939 | |
2940 | return -errno; | |
2941 | } | |
2942 | ||
a963990f LP |
2943 | got_something = true; |
2944 | ||
f7c1ad4f | 2945 | FOREACH_INOTIFY_EVENT(e, buffer, l) |
50f20cfd | 2946 | process_inotify_event(j, e); |
50f20cfd LP |
2947 | } |
2948 | } | |
6ad1d1c3 | 2949 | |
e02d1cf7 | 2950 | _public_ int sd_journal_wait(sd_journal *j, uint64_t timeout_usec) { |
a963990f | 2951 | int r; |
39c155ea | 2952 | uint64_t t; |
e02d1cf7 | 2953 | |
1ae464e0 | 2954 | assert_return(j, -EINVAL); |
e046719b | 2955 | assert_return(!journal_origin_changed(j), -ECHILD); |
e02d1cf7 | 2956 | |
a963990f | 2957 | if (j->inotify_fd < 0) { |
28ca867a | 2958 | JournalFile *f; |
a963990f | 2959 | |
9eba03c7 | 2960 | /* This is the first invocation, hence create the inotify watch */ |
a963990f LP |
2961 | r = sd_journal_get_fd(j); |
2962 | if (r < 0) | |
2963 | return r; | |
2964 | ||
9eba03c7 LP |
2965 | /* Server might have done some vacuuming while we weren't watching. Get rid of the deleted |
2966 | * files now so they don't stay around indefinitely. */ | |
90e74a66 | 2967 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
28ca867a | 2968 | r = journal_file_fstat(f); |
8581b9f9 MS |
2969 | if (r == -EIDRM) |
2970 | remove_file_real(j, f); | |
9eba03c7 LP |
2971 | else if (r < 0) |
2972 | log_debug_errno(r, "Failed to fstat() journal file '%s', ignoring: %m", f->path); | |
28ca867a MS |
2973 | } |
2974 | ||
9eba03c7 LP |
2975 | /* The journal might have changed since the context object was created and we weren't |
2976 | * watching before, hence don't wait for anything, and return immediately. */ | |
a963990f LP |
2977 | return determine_change(j); |
2978 | } | |
2979 | ||
39c155ea LP |
2980 | r = sd_journal_get_timeout(j, &t); |
2981 | if (r < 0) | |
2982 | return r; | |
2983 | ||
f5fbe71d | 2984 | if (t != UINT64_MAX) { |
496db330 | 2985 | t = usec_sub_unsigned(t, now(CLOCK_MONOTONIC)); |
85210bff | 2986 | |
f5fbe71d | 2987 | if (timeout_usec == UINT64_MAX || timeout_usec > t) |
39c155ea | 2988 | timeout_usec = t; |
85210bff LP |
2989 | } |
2990 | ||
a963990f LP |
2991 | do { |
2992 | r = fd_wait_for_event(j->inotify_fd, POLLIN, timeout_usec); | |
2993 | } while (r == -EINTR); | |
e02d1cf7 LP |
2994 | |
2995 | if (r < 0) | |
2996 | return r; | |
2997 | ||
a963990f | 2998 | return sd_journal_process(j); |
e02d1cf7 LP |
2999 | } |
3000 | ||
08984293 | 3001 | _public_ int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to) { |
08984293 LP |
3002 | JournalFile *f; |
3003 | bool first = true; | |
581483bf | 3004 | uint64_t fmin = 0, tmax = 0; |
08984293 LP |
3005 | int r; |
3006 | ||
1ae464e0 | 3007 | assert_return(j, -EINVAL); |
e046719b | 3008 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 TA |
3009 | assert_return(from || to, -EINVAL); |
3010 | assert_return(from != to, -EINVAL); | |
08984293 | 3011 | |
90e74a66 | 3012 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
08984293 LP |
3013 | usec_t fr, t; |
3014 | ||
3015 | r = journal_file_get_cutoff_realtime_usec(f, &fr, &t); | |
9f8d2983 LP |
3016 | if (r == -ENOENT) |
3017 | continue; | |
08984293 LP |
3018 | if (r < 0) |
3019 | return r; | |
3020 | if (r == 0) | |
3021 | continue; | |
3022 | ||
3023 | if (first) { | |
581483bf LP |
3024 | fmin = fr; |
3025 | tmax = t; | |
08984293 LP |
3026 | first = false; |
3027 | } else { | |
581483bf LP |
3028 | fmin = MIN(fr, fmin); |
3029 | tmax = MAX(t, tmax); | |
08984293 LP |
3030 | } |
3031 | } | |
3032 | ||
581483bf LP |
3033 | if (from) |
3034 | *from = fmin; | |
3035 | if (to) | |
3036 | *to = tmax; | |
3037 | ||
08984293 LP |
3038 | return first ? 0 : 1; |
3039 | } | |
3040 | ||
f4cb1bfd LP |
3041 | _public_ int sd_journal_get_cutoff_monotonic_usec( |
3042 | sd_journal *j, | |
3043 | sd_id128_t boot_id, | |
3044 | uint64_t *ret_from, | |
3045 | uint64_t *ret_to) { | |
3046 | ||
3047 | uint64_t from = UINT64_MAX, to = UINT64_MAX; | |
1651e2c6 | 3048 | bool found = false; |
f4cb1bfd | 3049 | JournalFile *f; |
08984293 LP |
3050 | int r; |
3051 | ||
1ae464e0 | 3052 | assert_return(j, -EINVAL); |
e046719b | 3053 | assert_return(!journal_origin_changed(j), -ECHILD); |
f4cb1bfd | 3054 | assert_return(ret_from != ret_to, -EINVAL); |
08984293 | 3055 | |
90e74a66 | 3056 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
f4cb1bfd | 3057 | usec_t ff, tt; |
08984293 | 3058 | |
f4cb1bfd | 3059 | r = journal_file_get_cutoff_monotonic_usec(f, boot_id, &ff, &tt); |
9f8d2983 LP |
3060 | if (r == -ENOENT) |
3061 | continue; | |
08984293 LP |
3062 | if (r < 0) |
3063 | return r; | |
3064 | if (r == 0) | |
3065 | continue; | |
3066 | ||
1651e2c6 | 3067 | if (found) { |
f4cb1bfd LP |
3068 | from = MIN(ff, from); |
3069 | to = MAX(tt, to); | |
08984293 | 3070 | } else { |
f4cb1bfd LP |
3071 | from = ff; |
3072 | to = tt; | |
1651e2c6 | 3073 | found = true; |
08984293 LP |
3074 | } |
3075 | } | |
3076 | ||
f4cb1bfd LP |
3077 | if (ret_from) |
3078 | *ret_from = from; | |
3079 | if (ret_to) | |
3080 | *ret_to = to; | |
3081 | ||
1651e2c6 | 3082 | return found; |
08984293 LP |
3083 | } |
3084 | ||
dca6219e | 3085 | void journal_print_header(sd_journal *j) { |
dca6219e LP |
3086 | JournalFile *f; |
3087 | bool newline = false; | |
3088 | ||
3089 | assert(j); | |
3090 | ||
90e74a66 | 3091 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
dca6219e LP |
3092 | if (newline) |
3093 | putchar('\n'); | |
3094 | else | |
3095 | newline = true; | |
3096 | ||
3097 | journal_file_print_header(f); | |
3098 | } | |
3099 | } | |
08984293 | 3100 | |
d8671b1c | 3101 | _public_ int sd_journal_get_usage(sd_journal *j, uint64_t *ret) { |
a1a03e30 LP |
3102 | JournalFile *f; |
3103 | uint64_t sum = 0; | |
3104 | ||
1ae464e0 | 3105 | assert_return(j, -EINVAL); |
e046719b | 3106 | assert_return(!journal_origin_changed(j), -ECHILD); |
d8671b1c | 3107 | assert_return(ret, -EINVAL); |
a1a03e30 | 3108 | |
90e74a66 | 3109 | ORDERED_HASHMAP_FOREACH(f, j->files) { |
a1a03e30 | 3110 | struct stat st; |
d8671b1c | 3111 | uint64_t b; |
a1a03e30 LP |
3112 | |
3113 | if (fstat(f->fd, &st) < 0) | |
3114 | return -errno; | |
3115 | ||
d8671b1c LP |
3116 | b = (uint64_t) st.st_blocks; |
3117 | if (b > UINT64_MAX / 512) | |
3118 | return -EOVERFLOW; | |
3119 | b *= 512; | |
3120 | ||
3121 | if (sum > UINT64_MAX - b) | |
3122 | return -EOVERFLOW; | |
3123 | sum += b; | |
a1a03e30 LP |
3124 | } |
3125 | ||
d8671b1c | 3126 | *ret = sum; |
a1a03e30 LP |
3127 | return 0; |
3128 | } | |
3129 | ||
3c1668da | 3130 | _public_ int sd_journal_query_unique(sd_journal *j, const char *field) { |
900952ec | 3131 | int r; |
3c1668da | 3132 | |
1ae464e0 | 3133 | assert_return(j, -EINVAL); |
e046719b | 3134 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 TA |
3135 | assert_return(!isempty(field), -EINVAL); |
3136 | assert_return(field_is_valid(field), -EINVAL); | |
3c1668da | 3137 | |
900952ec LP |
3138 | r = free_and_strdup(&j->unique_field, field); |
3139 | if (r < 0) | |
3140 | return r; | |
3c1668da | 3141 | |
3c1668da LP |
3142 | j->unique_file = NULL; |
3143 | j->unique_offset = 0; | |
360af4cf | 3144 | j->unique_file_lost = false; |
3c1668da LP |
3145 | |
3146 | return 0; | |
3147 | } | |
3148 | ||
0e0b0529 LP |
3149 | _public_ int sd_journal_enumerate_unique( |
3150 | sd_journal *j, | |
3151 | const void **ret_data, | |
3152 | size_t *ret_size) { | |
3153 | ||
3c1668da | 3154 | size_t k; |
19a2bd80 | 3155 | |
1ae464e0 | 3156 | assert_return(j, -EINVAL); |
e046719b | 3157 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 | 3158 | assert_return(j->unique_field, -EINVAL); |
19a2bd80 | 3159 | |
3c1668da | 3160 | k = strlen(j->unique_field); |
19a2bd80 | 3161 | |
3c1668da | 3162 | if (!j->unique_file) { |
360af4cf ZJS |
3163 | if (j->unique_file_lost) |
3164 | return 0; | |
3165 | ||
c1f906bd | 3166 | j->unique_file = ordered_hashmap_first(j->files); |
3c1668da LP |
3167 | if (!j->unique_file) |
3168 | return 0; | |
360af4cf | 3169 | |
3c1668da LP |
3170 | j->unique_offset = 0; |
3171 | } | |
19a2bd80 | 3172 | |
3c1668da LP |
3173 | for (;;) { |
3174 | JournalFile *of; | |
ae97089d | 3175 | Object *o; |
0e35afff | 3176 | void *odata; |
3c1668da LP |
3177 | size_t ol; |
3178 | bool found; | |
ae97089d | 3179 | int r; |
3c1668da | 3180 | |
bdc02927 | 3181 | /* Proceed to next data object in the field's linked list */ |
3c1668da LP |
3182 | if (j->unique_offset == 0) { |
3183 | r = journal_file_find_field_object(j->unique_file, j->unique_field, k, &o, NULL); | |
3184 | if (r < 0) | |
3185 | return r; | |
3186 | ||
3187 | j->unique_offset = r > 0 ? le64toh(o->field.head_data_offset) : 0; | |
3188 | } else { | |
3189 | r = journal_file_move_to_object(j->unique_file, OBJECT_DATA, j->unique_offset, &o); | |
3190 | if (r < 0) | |
3191 | return r; | |
3192 | ||
3193 | j->unique_offset = le64toh(o->data.next_field_offset); | |
3194 | } | |
3195 | ||
3196 | /* We reached the end of the list? Then start again, with the next file */ | |
3197 | if (j->unique_offset == 0) { | |
c1f906bd | 3198 | j->unique_file = ordered_hashmap_next(j->files, j->unique_file->path); |
360af4cf | 3199 | if (!j->unique_file) |
3c1668da LP |
3200 | return 0; |
3201 | ||
3c1668da LP |
3202 | continue; |
3203 | } | |
3204 | ||
d05089d8 MS |
3205 | /* We do not use OBJECT_DATA context here, but OBJECT_UNUSED |
3206 | * instead, so that we can look at this data object at the same | |
3c1668da | 3207 | * time as one on another file */ |
d05089d8 | 3208 | r = journal_file_move_to_object(j->unique_file, OBJECT_UNUSED, j->unique_offset, &o); |
3c1668da LP |
3209 | if (r < 0) |
3210 | return r; | |
3211 | ||
3212 | /* Let's do the type check by hand, since we used 0 context above. */ | |
baaa35ad ZJS |
3213 | if (o->object.type != OBJECT_DATA) |
3214 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
3215 | "%s:offset " OFSfmt ": object has type %d, expected %d", | |
3216 | j->unique_file->path, | |
3217 | j->unique_offset, | |
3218 | o->object.type, OBJECT_DATA); | |
ae97089d | 3219 | |
0e35afff DDM |
3220 | r = journal_file_data_payload(j->unique_file, o, j->unique_offset, NULL, 0, |
3221 | j->data_threshold, &odata, &ol); | |
3c1668da LP |
3222 | if (r < 0) |
3223 | return r; | |
3224 | ||
0f99f74a | 3225 | /* Check if we have at least the field name and "=". */ |
baaa35ad ZJS |
3226 | if (ol <= k) |
3227 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
3228 | "%s:offset " OFSfmt ": object has size %zu, expected at least %zu", | |
3229 | j->unique_file->path, | |
3230 | j->unique_offset, ol, k + 1); | |
3231 | ||
0e0b0529 | 3232 | if (memcmp(odata, j->unique_field, k) != 0 || ((const char*) odata)[k] != '=') |
baaa35ad ZJS |
3233 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), |
3234 | "%s:offset " OFSfmt ": object does not start with \"%s=\"", | |
3235 | j->unique_file->path, | |
3236 | j->unique_offset, | |
3237 | j->unique_field); | |
0f99f74a | 3238 | |
0e0b0529 LP |
3239 | /* OK, now let's see if we already returned this data object by checking if it exists in the |
3240 | * earlier traversed files. */ | |
3c1668da | 3241 | found = false; |
90e74a66 | 3242 | ORDERED_HASHMAP_FOREACH(of, j->files) { |
3c1668da LP |
3243 | if (of == j->unique_file) |
3244 | break; | |
3245 | ||
ed71f956 LP |
3246 | /* Skip this file it didn't have any fields indexed */ |
3247 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3c1668da LP |
3248 | continue; |
3249 | ||
2e1a8a5d LP |
3250 | /* We can reuse the hash from our current file only on old-style journal files |
3251 | * without keyed hashes. On new-style files we have to calculate the hash anew, to | |
3252 | * take the per-file hash seed into consideration. */ | |
3253 | if (!JOURNAL_HEADER_KEYED_HASH(j->unique_file->header) && !JOURNAL_HEADER_KEYED_HASH(of->header)) | |
3254 | r = journal_file_find_data_object_with_hash(of, odata, ol, le64toh(o->data.hash), NULL, NULL); | |
3255 | else | |
3256 | r = journal_file_find_data_object(of, odata, ol, NULL, NULL); | |
3c1668da LP |
3257 | if (r < 0) |
3258 | return r; | |
ed71f956 | 3259 | if (r > 0) { |
3c1668da | 3260 | found = true; |
ed71f956 LP |
3261 | break; |
3262 | } | |
3c1668da LP |
3263 | } |
3264 | ||
06cc69d4 JJ |
3265 | if (found) |
3266 | continue; | |
3267 | ||
0e35afff DDM |
3268 | *ret_data = odata; |
3269 | *ret_size = ol; | |
3c1668da LP |
3270 | |
3271 | return 1; | |
3272 | } | |
3273 | } | |
3274 | ||
76cbafcd ZJS |
3275 | _public_ int sd_journal_enumerate_available_unique(sd_journal *j, const void **data, size_t *size) { |
3276 | for (;;) { | |
3277 | int r; | |
3278 | ||
3279 | r = sd_journal_enumerate_unique(j, data, size); | |
3280 | if (r >= 0) | |
3281 | return r; | |
3282 | if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r)) | |
3283 | return r; | |
3284 | /* Try with the next field. sd_journal_enumerate_unique() modifies state, so on the next try | |
3285 | * we will access the next field. */ | |
3286 | } | |
3287 | } | |
3288 | ||
115646c7 | 3289 | _public_ void sd_journal_restart_unique(sd_journal *j) { |
e046719b | 3290 | if (!j || journal_origin_changed(j)) |
3c1668da LP |
3291 | return; |
3292 | ||
3293 | j->unique_file = NULL; | |
3294 | j->unique_offset = 0; | |
360af4cf | 3295 | j->unique_file_lost = false; |
3c1668da | 3296 | } |
85210bff | 3297 | |
eb86030e LP |
3298 | _public_ int sd_journal_enumerate_fields(sd_journal *j, const char **field) { |
3299 | int r; | |
3300 | ||
3301 | assert_return(j, -EINVAL); | |
e046719b | 3302 | assert_return(!journal_origin_changed(j), -ECHILD); |
eb86030e LP |
3303 | assert_return(field, -EINVAL); |
3304 | ||
3305 | if (!j->fields_file) { | |
3306 | if (j->fields_file_lost) | |
3307 | return 0; | |
3308 | ||
3309 | j->fields_file = ordered_hashmap_first(j->files); | |
3310 | if (!j->fields_file) | |
3311 | return 0; | |
3312 | ||
3313 | j->fields_hash_table_index = 0; | |
3314 | j->fields_offset = 0; | |
3315 | } | |
3316 | ||
3317 | for (;;) { | |
3318 | JournalFile *f, *of; | |
eb86030e LP |
3319 | uint64_t m; |
3320 | Object *o; | |
3321 | size_t sz; | |
3322 | bool found; | |
3323 | ||
3324 | f = j->fields_file; | |
3325 | ||
3326 | if (j->fields_offset == 0) { | |
3327 | bool eof = false; | |
3328 | ||
3329 | /* We are not yet positioned at any field. Let's pick the first one */ | |
3330 | r = journal_file_map_field_hash_table(f); | |
3331 | if (r < 0) | |
3332 | return r; | |
3333 | ||
3334 | m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem); | |
3335 | for (;;) { | |
3336 | if (j->fields_hash_table_index >= m) { | |
3337 | /* Reached the end of the hash table, go to the next file. */ | |
3338 | eof = true; | |
3339 | break; | |
3340 | } | |
3341 | ||
3342 | j->fields_offset = le64toh(f->field_hash_table[j->fields_hash_table_index].head_hash_offset); | |
3343 | ||
3344 | if (j->fields_offset != 0) | |
3345 | break; | |
3346 | ||
3347 | /* Empty hash table bucket, go to next one */ | |
3348 | j->fields_hash_table_index++; | |
3349 | } | |
3350 | ||
3351 | if (eof) { | |
3352 | /* Proceed with next file */ | |
3353 | j->fields_file = ordered_hashmap_next(j->files, f->path); | |
3354 | if (!j->fields_file) { | |
3355 | *field = NULL; | |
3356 | return 0; | |
3357 | } | |
3358 | ||
3359 | j->fields_offset = 0; | |
3360 | j->fields_hash_table_index = 0; | |
3361 | continue; | |
3362 | } | |
3363 | ||
3364 | } else { | |
3365 | /* We are already positioned at a field. If so, let's figure out the next field from it */ | |
3366 | ||
3367 | r = journal_file_move_to_object(f, OBJECT_FIELD, j->fields_offset, &o); | |
3368 | if (r < 0) | |
3369 | return r; | |
3370 | ||
3371 | j->fields_offset = le64toh(o->field.next_hash_offset); | |
3372 | if (j->fields_offset == 0) { | |
3373 | /* Reached the end of the hash table chain */ | |
3374 | j->fields_hash_table_index++; | |
3375 | continue; | |
3376 | } | |
3377 | } | |
3378 | ||
1f133e0d | 3379 | /* We use OBJECT_UNUSED here, so that the iterator below doesn't remove our mmap window */ |
eb86030e LP |
3380 | r = journal_file_move_to_object(f, OBJECT_UNUSED, j->fields_offset, &o); |
3381 | if (r < 0) | |
3382 | return r; | |
3383 | ||
3384 | /* Because we used OBJECT_UNUSED above, we need to do our type check manually */ | |
baaa35ad ZJS |
3385 | if (o->object.type != OBJECT_FIELD) |
3386 | return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), | |
3387 | "%s:offset " OFSfmt ": object has type %i, expected %i", | |
3388 | f->path, j->fields_offset, | |
3389 | o->object.type, OBJECT_FIELD); | |
eb86030e LP |
3390 | |
3391 | sz = le64toh(o->object.size) - offsetof(Object, field.payload); | |
3392 | ||
3393 | /* Let's see if we already returned this field name before. */ | |
3394 | found = false; | |
90e74a66 | 3395 | ORDERED_HASHMAP_FOREACH(of, j->files) { |
eb86030e LP |
3396 | if (of == f) |
3397 | break; | |
3398 | ||
3399 | /* Skip this file it didn't have any fields indexed */ | |
3400 | if (JOURNAL_HEADER_CONTAINS(of->header, n_fields) && le64toh(of->header->n_fields) <= 0) | |
3401 | continue; | |
3402 | ||
27bf0ab7 DDM |
3403 | if (!JOURNAL_HEADER_KEYED_HASH(f->header) && !JOURNAL_HEADER_KEYED_HASH(of->header)) |
3404 | r = journal_file_find_field_object_with_hash(of, o->field.payload, sz, | |
3405 | le64toh(o->field.hash), NULL, NULL); | |
3406 | else | |
3407 | r = journal_file_find_field_object(of, o->field.payload, sz, NULL, NULL); | |
eb86030e LP |
3408 | if (r < 0) |
3409 | return r; | |
3410 | if (r > 0) { | |
3411 | found = true; | |
3412 | break; | |
3413 | } | |
3414 | } | |
3415 | ||
3416 | if (found) | |
3417 | continue; | |
3418 | ||
3419 | /* Check if this is really a valid string containing no NUL byte */ | |
3420 | if (memchr(o->field.payload, 0, sz)) | |
3421 | return -EBADMSG; | |
3422 | ||
adbd80f5 | 3423 | if (j->data_threshold > 0 && sz > j->data_threshold) |
eb86030e LP |
3424 | sz = j->data_threshold; |
3425 | ||
319a4f4b | 3426 | if (!GREEDY_REALLOC(j->fields_buffer, sz + 1)) |
eb86030e LP |
3427 | return -ENOMEM; |
3428 | ||
3429 | memcpy(j->fields_buffer, o->field.payload, sz); | |
3430 | j->fields_buffer[sz] = 0; | |
3431 | ||
3432 | if (!field_is_valid(j->fields_buffer)) | |
3433 | return -EBADMSG; | |
3434 | ||
3435 | *field = j->fields_buffer; | |
3436 | return 1; | |
3437 | } | |
3438 | } | |
3439 | ||
3440 | _public_ void sd_journal_restart_fields(sd_journal *j) { | |
e046719b | 3441 | if (!j || journal_origin_changed(j)) |
eb86030e LP |
3442 | return; |
3443 | ||
3444 | j->fields_file = NULL; | |
3445 | j->fields_hash_table_index = 0; | |
3446 | j->fields_offset = 0; | |
3447 | j->fields_file_lost = false; | |
3448 | } | |
3449 | ||
85210bff | 3450 | _public_ int sd_journal_reliable_fd(sd_journal *j) { |
1ae464e0 | 3451 | assert_return(j, -EINVAL); |
e046719b | 3452 | assert_return(!journal_origin_changed(j), -ECHILD); |
85210bff LP |
3453 | |
3454 | return !j->on_network; | |
3455 | } | |
d4205751 LP |
3456 | |
3457 | static char *lookup_field(const char *field, void *userdata) { | |
99534007 | 3458 | sd_journal *j = ASSERT_PTR(userdata); |
d4205751 LP |
3459 | const void *data; |
3460 | size_t size, d; | |
3461 | int r; | |
3462 | ||
3463 | assert(field); | |
d4205751 LP |
3464 | |
3465 | r = sd_journal_get_data(j, field, &data, &size); | |
3466 | if (r < 0 || | |
3467 | size > REPLACE_VAR_MAX) | |
3468 | return strdup(field); | |
3469 | ||
3470 | d = strlen(field) + 1; | |
3471 | ||
3472 | return strndup((const char*) data + d, size - d); | |
3473 | } | |
3474 | ||
3475 | _public_ int sd_journal_get_catalog(sd_journal *j, char **ret) { | |
3476 | const void *data; | |
3477 | size_t size; | |
3478 | sd_id128_t id; | |
3479 | _cleanup_free_ char *text = NULL, *cid = NULL; | |
3480 | char *t; | |
3481 | int r; | |
3482 | ||
1ae464e0 | 3483 | assert_return(j, -EINVAL); |
e046719b | 3484 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 | 3485 | assert_return(ret, -EINVAL); |
d4205751 LP |
3486 | |
3487 | r = sd_journal_get_data(j, "MESSAGE_ID", &data, &size); | |
3488 | if (r < 0) | |
3489 | return r; | |
3490 | ||
3491 | cid = strndup((const char*) data + 11, size - 11); | |
3492 | if (!cid) | |
3493 | return -ENOMEM; | |
3494 | ||
3495 | r = sd_id128_from_string(cid, &id); | |
3496 | if (r < 0) | |
3497 | return r; | |
3498 | ||
fba84e12 | 3499 | r = catalog_get(secure_getenv("SYSTEMD_CATALOG") ?: CATALOG_DATABASE, id, &text); |
d4205751 LP |
3500 | if (r < 0) |
3501 | return r; | |
3502 | ||
3503 | t = replace_var(text, lookup_field, j); | |
3504 | if (!t) | |
3505 | return -ENOMEM; | |
3506 | ||
3507 | *ret = t; | |
3508 | return 0; | |
3509 | } | |
8f1e860f LP |
3510 | |
3511 | _public_ int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret) { | |
1ae464e0 | 3512 | assert_return(ret, -EINVAL); |
8f1e860f | 3513 | |
844ec79b | 3514 | return catalog_get(CATALOG_DATABASE, id, ret); |
8f1e860f | 3515 | } |
93b73b06 LP |
3516 | |
3517 | _public_ int sd_journal_set_data_threshold(sd_journal *j, size_t sz) { | |
1ae464e0 | 3518 | assert_return(j, -EINVAL); |
e046719b | 3519 | assert_return(!journal_origin_changed(j), -ECHILD); |
93b73b06 LP |
3520 | |
3521 | j->data_threshold = sz; | |
3522 | return 0; | |
3523 | } | |
3524 | ||
3525 | _public_ int sd_journal_get_data_threshold(sd_journal *j, size_t *sz) { | |
1ae464e0 | 3526 | assert_return(j, -EINVAL); |
e046719b | 3527 | assert_return(!journal_origin_changed(j), -ECHILD); |
1ae464e0 | 3528 | assert_return(sz, -EINVAL); |
93b73b06 LP |
3529 | |
3530 | *sz = j->data_threshold; | |
3531 | return 0; | |
3532 | } | |
39fd5b08 JS |
3533 | |
3534 | _public_ int sd_journal_has_runtime_files(sd_journal *j) { | |
3535 | assert_return(j, -EINVAL); | |
3536 | ||
3537 | return j->has_runtime_files; | |
3538 | } | |
3539 | ||
3540 | _public_ int sd_journal_has_persistent_files(sd_journal *j) { | |
3541 | assert_return(j, -EINVAL); | |
3542 | ||
3543 | return j->has_persistent_files; | |
3544 | } |