]>
Commit | Line | Data |
---|---|---|
87d2c1ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
87d2c1ff | 22 | #include <errno.h> |
87d2c1ff | 23 | #include <fcntl.h> |
3fbf9cbb | 24 | #include <stddef.h> |
87d2c1ff LP |
25 | |
26 | #include "sd-journal.h" | |
27 | #include "journal-def.h" | |
cec736d2 | 28 | #include "journal-file.h" |
260a2be4 | 29 | #include "hashmap.h" |
cec736d2 | 30 | #include "list.h" |
87d2c1ff | 31 | |
cec736d2 | 32 | typedef struct Match Match; |
87d2c1ff | 33 | |
cec736d2 LP |
34 | struct Match { |
35 | char *data; | |
36 | size_t size; | |
37 | uint64_t hash; | |
87d2c1ff | 38 | |
cec736d2 LP |
39 | LIST_FIELDS(Match, matches); |
40 | }; | |
87d2c1ff | 41 | |
87d2c1ff | 42 | struct sd_journal { |
260a2be4 | 43 | Hashmap *files; |
87d2c1ff | 44 | |
cec736d2 | 45 | JournalFile *current_file; |
87d2c1ff | 46 | |
cec736d2 LP |
47 | LIST_HEAD(Match, matches); |
48 | }; | |
87d2c1ff | 49 | |
cec736d2 LP |
50 | int sd_journal_add_match(sd_journal *j, const char *field, const void *data, size_t size) { |
51 | Match *m; | |
52 | char *e; | |
87d2c1ff | 53 | |
cec736d2 LP |
54 | assert(j); |
55 | assert(field); | |
56 | assert(data || size == 0); | |
87d2c1ff | 57 | |
cec736d2 LP |
58 | m = new0(Match, 1); |
59 | if (!m) | |
60 | return -ENOMEM; | |
87d2c1ff | 61 | |
cec736d2 LP |
62 | m->size = strlen(field) + 1 + size; |
63 | m->data = malloc(m->size); | |
64 | if (!m->data) { | |
65 | free(m); | |
66 | return -ENOMEM; | |
87d2c1ff LP |
67 | } |
68 | ||
cec736d2 LP |
69 | e = stpcpy(m->data, field); |
70 | *(e++) = '='; | |
71 | memcpy(e, data, size); | |
87d2c1ff | 72 | |
cec736d2 | 73 | LIST_PREPEND(Match, matches, j->matches, m); |
87d2c1ff LP |
74 | return 0; |
75 | } | |
76 | ||
cec736d2 LP |
77 | void sd_journal_flush_matches(sd_journal *j) { |
78 | assert(j); | |
87d2c1ff | 79 | |
cec736d2 LP |
80 | while (j->matches) { |
81 | Match *m = j->matches; | |
87d2c1ff | 82 | |
cec736d2 LP |
83 | LIST_REMOVE(Match, matches, j->matches, m); |
84 | free(m->data); | |
85 | free(m); | |
87d2c1ff | 86 | } |
87d2c1ff LP |
87 | } |
88 | ||
cec736d2 | 89 | static int compare_order(JournalFile *af, Object *ao, uint64_t ap, |
ae2cc8ef | 90 | JournalFile *bf, Object *bo, uint64_t bp) { |
87d2c1ff | 91 | |
cec736d2 | 92 | uint64_t a, b; |
87d2c1ff | 93 | |
ae2cc8ef LP |
94 | /* We operate on two different files here, hence we can access |
95 | * two objects at the same time, which we normally can't */ | |
96 | ||
cec736d2 | 97 | if (sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id)) { |
87d2c1ff | 98 | |
cec736d2 LP |
99 | /* If this is from the same seqnum source, compare |
100 | * seqnums */ | |
101 | a = le64toh(ao->entry.seqnum); | |
102 | b = le64toh(bo->entry.seqnum); | |
87d2c1ff | 103 | |
ae2cc8ef LP |
104 | if (a < b) |
105 | return -1; | |
106 | if (a > b) | |
107 | return 1; | |
108 | } | |
87d2c1ff | 109 | |
ae2cc8ef | 110 | if (sd_id128_equal(ao->entry.boot_id, bo->entry.boot_id)) { |
87d2c1ff | 111 | |
cec736d2 LP |
112 | /* If the boot id matches compare monotonic time */ |
113 | a = le64toh(ao->entry.monotonic); | |
114 | b = le64toh(bo->entry.monotonic); | |
87d2c1ff | 115 | |
ae2cc8ef LP |
116 | if (a < b) |
117 | return -1; | |
118 | if (a > b) | |
119 | return 1; | |
87d2c1ff LP |
120 | } |
121 | ||
ae2cc8ef LP |
122 | /* Otherwise compare UTC time */ |
123 | a = le64toh(ao->entry.realtime); | |
124 | b = le64toh(ao->entry.realtime); | |
125 | ||
126 | if (a < b) | |
127 | return -1; | |
128 | if (a > b) | |
129 | return 1; | |
130 | ||
131 | /* Finally, compare by contents */ | |
132 | a = le64toh(ao->entry.xor_hash); | |
133 | b = le64toh(ao->entry.xor_hash); | |
134 | ||
135 | if (a < b) | |
136 | return -1; | |
137 | if (a > b) | |
138 | return 1; | |
139 | ||
140 | return 0; | |
87d2c1ff LP |
141 | } |
142 | ||
cec736d2 LP |
143 | int sd_journal_next(sd_journal *j) { |
144 | JournalFile *f, *new_current = NULL; | |
145 | Iterator i; | |
87d2c1ff | 146 | int r; |
cec736d2 LP |
147 | uint64_t new_offset = 0; |
148 | Object *new_entry = NULL; | |
87d2c1ff | 149 | |
cec736d2 | 150 | assert(j); |
87d2c1ff | 151 | |
cec736d2 LP |
152 | HASHMAP_FOREACH(f, j->files, i) { |
153 | Object *o; | |
154 | uint64_t p; | |
87d2c1ff | 155 | |
cec736d2 LP |
156 | if (f->current_offset > 0) { |
157 | r = journal_file_move_to_object(f, f->current_offset, OBJECT_ENTRY, &o); | |
158 | if (r < 0) | |
159 | return r; | |
160 | } else | |
161 | o = NULL; | |
87d2c1ff | 162 | |
cec736d2 | 163 | r = journal_file_next_entry(f, o, &o, &p); |
87d2c1ff LP |
164 | if (r < 0) |
165 | return r; | |
cec736d2 LP |
166 | else if (r == 0) |
167 | continue; | |
87d2c1ff | 168 | |
ae2cc8ef LP |
169 | if (!new_current || |
170 | compare_order(new_current, new_entry, new_offset, f, o, p) > 0) { | |
cec736d2 LP |
171 | new_current = f; |
172 | new_entry = o; | |
173 | new_offset = p; | |
87d2c1ff | 174 | } |
87d2c1ff LP |
175 | } |
176 | ||
cec736d2 LP |
177 | if (new_current) { |
178 | j->current_file = new_current; | |
3fbf9cbb LP |
179 | j->current_file->current_offset = new_offset; |
180 | j->current_file->current_field = 0; | |
ae2cc8ef LP |
181 | |
182 | /* Skip over any identical entries in the other files too */ | |
183 | ||
184 | HASHMAP_FOREACH(f, j->files, i) { | |
185 | Object *o; | |
186 | uint64_t p; | |
187 | ||
188 | if (j->current_file == f) | |
189 | continue; | |
190 | ||
191 | if (f->current_offset > 0) { | |
192 | r = journal_file_move_to_object(f, f->current_offset, OBJECT_ENTRY, &o); | |
193 | if (r < 0) | |
194 | return r; | |
195 | } else | |
196 | o = NULL; | |
197 | ||
198 | r = journal_file_next_entry(f, o, &o, &p); | |
199 | if (r < 0) | |
200 | return r; | |
201 | else if (r == 0) | |
202 | continue; | |
203 | ||
204 | if (compare_order(new_current, new_entry, new_offset, f, o, p) == 0) { | |
205 | f->current_offset = p; | |
206 | f->current_field = 0; | |
207 | } | |
208 | } | |
209 | ||
cec736d2 | 210 | return 1; |
87d2c1ff LP |
211 | } |
212 | ||
87d2c1ff LP |
213 | return 0; |
214 | } | |
215 | ||
cec736d2 LP |
216 | int sd_journal_previous(sd_journal *j) { |
217 | JournalFile *f, *new_current = NULL; | |
218 | Iterator i; | |
87d2c1ff | 219 | int r; |
cec736d2 LP |
220 | uint64_t new_offset = 0; |
221 | Object *new_entry = NULL; | |
87d2c1ff | 222 | |
cec736d2 | 223 | assert(j); |
87d2c1ff | 224 | |
cec736d2 | 225 | HASHMAP_FOREACH(f, j->files, i) { |
dad50316 | 226 | Object *o; |
cec736d2 | 227 | uint64_t p; |
87d2c1ff | 228 | |
cec736d2 LP |
229 | if (f->current_offset > 0) { |
230 | r = journal_file_move_to_object(f, f->current_offset, OBJECT_ENTRY, &o); | |
231 | if (r < 0) | |
232 | return r; | |
233 | } else | |
234 | o = NULL; | |
87d2c1ff | 235 | |
cec736d2 | 236 | r = journal_file_prev_entry(f, o, &o, &p); |
87d2c1ff LP |
237 | if (r < 0) |
238 | return r; | |
cec736d2 LP |
239 | else if (r == 0) |
240 | continue; | |
87d2c1ff | 241 | |
cec736d2 LP |
242 | if (!new_current || compare_order(new_current, new_entry, new_offset, f, o, p) > 0) { |
243 | new_current = f; | |
244 | new_entry = o; | |
245 | new_offset = p; | |
246 | } | |
87d2c1ff LP |
247 | } |
248 | ||
cec736d2 LP |
249 | if (new_current) { |
250 | j->current_file = new_current; | |
3fbf9cbb LP |
251 | j->current_file->current_offset = new_offset; |
252 | j->current_file->current_field = 0; | |
cec736d2 | 253 | return 1; |
87d2c1ff LP |
254 | } |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
3fbf9cbb | 259 | int sd_journal_get_cursor(sd_journal *j, char **cursor) { |
cec736d2 | 260 | Object *o; |
87d2c1ff | 261 | int r; |
3fbf9cbb | 262 | char bid[33], sid[33]; |
87d2c1ff | 263 | |
cec736d2 LP |
264 | assert(j); |
265 | assert(cursor); | |
87d2c1ff | 266 | |
3fbf9cbb LP |
267 | if (!j->current_file || j->current_file->current_offset <= 0) |
268 | return -EADDRNOTAVAIL; | |
87d2c1ff | 269 | |
cec736d2 | 270 | r = journal_file_move_to_object(j->current_file, j->current_file->current_offset, OBJECT_ENTRY, &o); |
87d2c1ff LP |
271 | if (r < 0) |
272 | return r; | |
273 | ||
3fbf9cbb LP |
274 | sd_id128_to_string(j->current_file->header->seqnum_id, sid); |
275 | sd_id128_to_string(o->entry.boot_id, bid); | |
87d2c1ff | 276 | |
3fbf9cbb LP |
277 | if (asprintf(cursor, |
278 | "s=%s;i=%llx;b=%s;m=%llx;t=%llx;x=%llx;p=%s", | |
279 | sid, (unsigned long long) le64toh(o->entry.seqnum), | |
280 | bid, (unsigned long long) le64toh(o->entry.monotonic), | |
281 | (unsigned long long) le64toh(o->entry.realtime), | |
282 | (unsigned long long) le64toh(o->entry.xor_hash), | |
283 | file_name_from_path(j->current_file->path)) < 0) | |
284 | return -ENOMEM; | |
87d2c1ff LP |
285 | |
286 | return 1; | |
287 | } | |
288 | ||
3fbf9cbb | 289 | int sd_journal_set_cursor(sd_journal *j, const char *cursor) { |
cec736d2 | 290 | return -EINVAL; |
87d2c1ff LP |
291 | } |
292 | ||
3fbf9cbb LP |
293 | static int add_file(sd_journal *j, const char *prefix, const char *dir, const char *filename) { |
294 | char *fn; | |
295 | int r; | |
296 | JournalFile *f; | |
297 | ||
298 | assert(j); | |
299 | assert(prefix); | |
300 | assert(filename); | |
301 | ||
302 | if (dir) | |
303 | fn = join(prefix, "/", dir, "/", filename, NULL); | |
304 | else | |
305 | fn = join(prefix, "/", filename, NULL); | |
306 | ||
307 | if (!fn) | |
308 | return -ENOMEM; | |
309 | ||
310 | r = journal_file_open(fn, O_RDONLY, 0, NULL, &f); | |
311 | free(fn); | |
312 | ||
313 | if (r < 0) { | |
314 | if (errno == ENOENT) | |
315 | return 0; | |
316 | ||
317 | return r; | |
318 | } | |
319 | ||
320 | r = hashmap_put(j->files, f->path, f); | |
321 | if (r < 0) { | |
322 | journal_file_close(f); | |
323 | return r; | |
324 | } | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
329 | static int add_directory(sd_journal *j, const char *prefix, const char *dir) { | |
330 | char *fn; | |
331 | int r; | |
332 | DIR *d; | |
333 | ||
334 | assert(j); | |
335 | assert(prefix); | |
336 | assert(dir); | |
337 | ||
338 | fn = join(prefix, "/", dir, NULL); | |
339 | if (!fn) | |
340 | return -ENOMEM; | |
341 | ||
342 | d = opendir(fn); | |
343 | free(fn); | |
344 | ||
345 | if (!d) { | |
346 | if (errno == ENOENT) | |
347 | return 0; | |
348 | ||
349 | return -errno; | |
350 | } | |
351 | ||
352 | for (;;) { | |
353 | struct dirent buf, *de; | |
354 | ||
355 | r = readdir_r(d, &buf, &de); | |
356 | if (r != 0 || !de) | |
357 | break; | |
358 | ||
359 | if (!dirent_is_file_with_suffix(de, ".journal")) | |
360 | continue; | |
361 | ||
362 | r = add_file(j, prefix, dir, de->d_name); | |
363 | if (r < 0) | |
364 | log_debug("Failed to add file %s/%s/%s: %s", prefix, dir, de->d_name, strerror(-r)); | |
365 | } | |
366 | ||
367 | closedir(d); | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
87d2c1ff LP |
372 | int sd_journal_open(sd_journal **ret) { |
373 | sd_journal *j; | |
87d2c1ff | 374 | const char *p; |
87d2c1ff LP |
375 | const char search_paths[] = |
376 | "/run/log/journal\0" | |
377 | "/var/log/journal\0"; | |
3fbf9cbb | 378 | int r; |
87d2c1ff LP |
379 | |
380 | assert(ret); | |
381 | ||
382 | j = new0(sd_journal, 1); | |
383 | if (!j) | |
384 | return -ENOMEM; | |
385 | ||
260a2be4 | 386 | j->files = hashmap_new(string_hash_func, string_compare_func); |
3fbf9cbb LP |
387 | if (!j->files) { |
388 | r = -ENOMEM; | |
260a2be4 | 389 | goto fail; |
3fbf9cbb LP |
390 | } |
391 | ||
392 | /* We ignore most errors here, since the idea is to only open | |
393 | * what's actually accessible, and ignore the rest. */ | |
260a2be4 | 394 | |
87d2c1ff LP |
395 | NULSTR_FOREACH(p, search_paths) { |
396 | DIR *d; | |
397 | ||
398 | d = opendir(p); | |
399 | if (!d) { | |
3fbf9cbb LP |
400 | if (errno != ENOENT) |
401 | log_debug("Failed to open %s: %m", p); | |
87d2c1ff LP |
402 | continue; |
403 | } | |
404 | ||
405 | for (;;) { | |
406 | struct dirent buf, *de; | |
3fbf9cbb | 407 | sd_id128_t id; |
87d2c1ff | 408 | |
3fbf9cbb LP |
409 | r = readdir_r(d, &buf, &de); |
410 | if (r != 0 || !de) | |
87d2c1ff LP |
411 | break; |
412 | ||
3fbf9cbb LP |
413 | if (dirent_is_file_with_suffix(de, ".journal")) { |
414 | r = add_file(j, p, NULL, de->d_name); | |
415 | if (r < 0) | |
416 | log_debug("Failed to add file %s/%s: %s", p, de->d_name, strerror(-r)); | |
87d2c1ff | 417 | |
3fbf9cbb LP |
418 | } else if ((de->d_type == DT_DIR || de->d_type == DT_UNKNOWN) && |
419 | sd_id128_from_string(de->d_name, &id) >= 0) { | |
87d2c1ff | 420 | |
3fbf9cbb LP |
421 | r = add_directory(j, p, de->d_name); |
422 | if (r < 0) | |
423 | log_debug("Failed to add directory %s/%s: %s", p, de->d_name, strerror(-r)); | |
260a2be4 LP |
424 | } |
425 | } | |
3fbf9cbb LP |
426 | |
427 | closedir(d); | |
87d2c1ff LP |
428 | } |
429 | ||
430 | *ret = j; | |
431 | return 0; | |
432 | ||
433 | fail: | |
434 | sd_journal_close(j); | |
435 | ||
436 | return r; | |
437 | }; | |
438 | ||
439 | void sd_journal_close(sd_journal *j) { | |
440 | assert(j); | |
441 | ||
260a2be4 LP |
442 | if (j->files) { |
443 | JournalFile *f; | |
444 | ||
445 | while ((f = hashmap_steal_first(j->files))) | |
446 | journal_file_close(f); | |
447 | ||
448 | hashmap_free(j->files); | |
449 | } | |
87d2c1ff LP |
450 | |
451 | free(j); | |
452 | } | |
3fbf9cbb LP |
453 | |
454 | int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret) { | |
455 | Object *o; | |
456 | JournalFile *f; | |
457 | int r; | |
458 | ||
459 | assert(j); | |
460 | assert(ret); | |
461 | ||
462 | f = j->current_file; | |
463 | if (!f) | |
464 | return 0; | |
465 | ||
466 | if (f->current_offset <= 0) | |
467 | return 0; | |
468 | ||
469 | r = journal_file_move_to_object(f, f->current_offset, OBJECT_ENTRY, &o); | |
470 | if (r < 0) | |
471 | return r; | |
472 | ||
473 | *ret = le64toh(o->entry.realtime); | |
474 | return 1; | |
475 | } | |
476 | ||
477 | int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret) { | |
478 | Object *o; | |
479 | JournalFile *f; | |
480 | int r; | |
481 | sd_id128_t id; | |
482 | ||
483 | assert(j); | |
484 | assert(ret); | |
485 | ||
486 | f = j->current_file; | |
487 | if (!f) | |
488 | return 0; | |
489 | ||
490 | if (f->current_offset <= 0) | |
491 | return 0; | |
492 | ||
493 | r = sd_id128_get_machine(&id); | |
494 | if (r < 0) | |
495 | return r; | |
496 | ||
497 | r = journal_file_move_to_object(f, f->current_offset, OBJECT_ENTRY, &o); | |
498 | if (r < 0) | |
499 | return r; | |
500 | ||
501 | if (!sd_id128_equal(id, o->entry.boot_id)) | |
502 | return 0; | |
503 | ||
504 | *ret = le64toh(o->entry.monotonic); | |
505 | return 1; | |
506 | ||
507 | } | |
508 | ||
509 | int sd_journal_get_field(sd_journal *j, const char *field, const void **data, size_t *size) { | |
510 | JournalFile *f; | |
511 | uint64_t i, n; | |
512 | size_t field_length; | |
513 | int r; | |
514 | Object *o; | |
515 | ||
516 | assert(j); | |
517 | assert(field); | |
518 | assert(data); | |
519 | assert(size); | |
520 | ||
521 | if (isempty(field) || strchr(field, '=')) | |
522 | return -EINVAL; | |
523 | ||
524 | f = j->current_file; | |
525 | if (!f) | |
526 | return 0; | |
527 | ||
528 | if (f->current_offset <= 0) | |
529 | return 0; | |
530 | ||
531 | r = journal_file_move_to_object(f, f->current_offset, OBJECT_ENTRY, &o); | |
532 | if (r < 0) | |
533 | return r; | |
534 | ||
535 | field_length = strlen(field); | |
536 | ||
537 | n = journal_file_entry_n_items(o); | |
538 | for (i = 0; i < n; i++) { | |
539 | uint64_t p, l; | |
540 | size_t t; | |
541 | ||
542 | p = le64toh(o->entry.items[i].object_offset); | |
543 | r = journal_file_move_to_object(f, p, OBJECT_DATA, &o); | |
544 | if (r < 0) | |
545 | return r; | |
546 | ||
547 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
548 | ||
161e54f8 LP |
549 | if (l >= field_length+1 && |
550 | memcmp(o->data.payload, field, field_length) == 0 && | |
551 | o->data.payload[field_length] == '=') { | |
3fbf9cbb | 552 | |
161e54f8 | 553 | t = (size_t) l; |
3fbf9cbb | 554 | |
161e54f8 LP |
555 | if ((uint64_t) t != l) |
556 | return -E2BIG; | |
3fbf9cbb | 557 | |
161e54f8 LP |
558 | *data = o->data.payload; |
559 | *size = t; | |
3fbf9cbb | 560 | |
161e54f8 LP |
561 | return 1; |
562 | } | |
3fbf9cbb | 563 | |
161e54f8 LP |
564 | r = journal_file_move_to_object(f, f->current_offset, OBJECT_ENTRY, &o); |
565 | if (r < 0) | |
566 | return r; | |
3fbf9cbb LP |
567 | } |
568 | ||
569 | return 0; | |
570 | } | |
571 | ||
572 | int sd_journal_iterate_fields(sd_journal *j, const void **data, size_t *size) { | |
573 | JournalFile *f; | |
574 | uint64_t p, l, n; | |
575 | size_t t; | |
576 | int r; | |
577 | Object *o; | |
578 | ||
579 | assert(j); | |
580 | assert(data); | |
581 | assert(size); | |
582 | ||
583 | f = j->current_file; | |
584 | if (!f) | |
585 | return 0; | |
586 | ||
587 | if (f->current_offset <= 0) | |
588 | return 0; | |
589 | ||
590 | r = journal_file_move_to_object(f, f->current_offset, OBJECT_ENTRY, &o); | |
591 | if (r < 0) | |
592 | return r; | |
593 | ||
594 | n = journal_file_entry_n_items(o); | |
595 | if (f->current_field >= n) | |
596 | return 0; | |
597 | ||
598 | p = le64toh(o->entry.items[f->current_field].object_offset); | |
599 | r = journal_file_move_to_object(f, p, OBJECT_DATA, &o); | |
600 | if (r < 0) | |
601 | return r; | |
602 | ||
603 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
604 | t = (size_t) l; | |
605 | ||
606 | /* We can't read objects larger than 4G on a 32bit machine */ | |
607 | if ((uint64_t) t != l) | |
608 | return -E2BIG; | |
609 | ||
610 | *data = o->data.payload; | |
611 | *size = t; | |
612 | ||
613 | f->current_field ++; | |
614 | ||
615 | return 1; | |
616 | } | |
c2373f84 LP |
617 | |
618 | int sd_journal_seek_head(sd_journal *j) { | |
619 | assert(j); | |
620 | return -EINVAL; | |
621 | } | |
622 | ||
623 | int sd_journal_seek_tail(sd_journal *j) { | |
624 | assert(j); | |
625 | return -EINVAL; | |
626 | } |