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cec736d2 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 | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
cec736d2 LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
cec736d2 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
cec736d2 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
22 | #include <sys/mman.h> | |
23 | #include <errno.h> | |
24 | #include <sys/uio.h> | |
25 | #include <unistd.h> | |
26 | #include <sys/statvfs.h> | |
27 | #include <fcntl.h> | |
28 | #include <stddef.h> | |
29 | ||
30 | #include "journal-def.h" | |
31 | #include "journal-file.h" | |
32 | #include "lookup3.h" | |
807e17f0 | 33 | #include "compress.h" |
7560fffc | 34 | #include "fsprg.h" |
cec736d2 | 35 | |
4a92baf3 LP |
36 | #define DEFAULT_DATA_HASH_TABLE_SIZE (2047ULL*sizeof(HashItem)) |
37 | #define DEFAULT_FIELD_HASH_TABLE_SIZE (333ULL*sizeof(HashItem)) | |
cec736d2 | 38 | |
be19b7df | 39 | #define COMPRESSION_SIZE_THRESHOLD (512ULL) |
807e17f0 | 40 | |
babfc091 | 41 | /* This is the minimum journal file size */ |
b47ffcfd | 42 | #define JOURNAL_FILE_SIZE_MIN (64ULL*1024ULL) /* 64 KiB */ |
babfc091 LP |
43 | |
44 | /* These are the lower and upper bounds if we deduce the max_use value | |
45 | * from the file system size */ | |
46 | #define DEFAULT_MAX_USE_LOWER (1ULL*1024ULL*1024ULL) /* 1 MiB */ | |
47 | #define DEFAULT_MAX_USE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
48 | ||
49 | /* This is the upper bound if we deduce max_size from max_use */ | |
71100051 | 50 | #define DEFAULT_MAX_SIZE_UPPER (128ULL*1024ULL*1024ULL) /* 128 MiB */ |
babfc091 LP |
51 | |
52 | /* This is the upper bound if we deduce the keep_free value from the | |
53 | * file system size */ | |
54 | #define DEFAULT_KEEP_FREE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
55 | ||
56 | /* This is the keep_free value when we can't determine the system | |
57 | * size */ | |
58 | #define DEFAULT_KEEP_FREE (1024ULL*1024ULL) /* 1 MB */ | |
59 | ||
dca6219e LP |
60 | /* n_data was the first entry we added after the initial file format design */ |
61 | #define HEADER_SIZE_MIN ALIGN64(offsetof(Header, n_data)) | |
cec736d2 LP |
62 | |
63 | #define ALIGN64(x) (((x) + 7ULL) & ~7ULL) | |
64 | ||
dca6219e LP |
65 | #define JOURNAL_HEADER_CONTAINS(h, field) \ |
66 | (le64toh((h)->header_size) >= offsetof(Header, field) + sizeof((h)->field)) | |
67 | ||
7560fffc | 68 | static int journal_file_maybe_append_tag(JournalFile *f, uint64_t realtime); |
b0af6f41 | 69 | static int journal_file_hmac_put_object(JournalFile *f, int type, uint64_t p); |
dca6219e | 70 | |
cec736d2 | 71 | void journal_file_close(JournalFile *f) { |
de190aef | 72 | assert(f); |
cec736d2 | 73 | |
b0af6f41 LP |
74 | /* Write the final tag */ |
75 | if (f->authenticate) | |
76 | journal_file_append_tag(f); | |
77 | ||
7560fffc | 78 | /* Sync everything to disk, before we mark the file offline */ |
16e9f408 LP |
79 | if (f->mmap && f->fd >= 0) |
80 | mmap_cache_close_fd(f->mmap, f->fd); | |
7560fffc LP |
81 | |
82 | if (f->writable && f->fd >= 0) | |
83 | fdatasync(f->fd); | |
84 | ||
d384c7a8 | 85 | if (f->header) { |
cd96b3b8 LP |
86 | /* Mark the file offline. Don't override the archived state if it already is set */ |
87 | if (f->writable && f->header->state == STATE_ONLINE) | |
d384c7a8 | 88 | f->header->state = STATE_OFFLINE; |
cec736d2 | 89 | |
d384c7a8 MS |
90 | munmap(f->header, PAGE_ALIGN(sizeof(Header))); |
91 | } | |
cec736d2 | 92 | |
0ac38b70 LP |
93 | if (f->fd >= 0) |
94 | close_nointr_nofail(f->fd); | |
95 | ||
cec736d2 | 96 | free(f->path); |
807e17f0 | 97 | |
16e9f408 LP |
98 | if (f->mmap) |
99 | mmap_cache_unref(f->mmap); | |
100 | ||
807e17f0 LP |
101 | #ifdef HAVE_XZ |
102 | free(f->compress_buffer); | |
103 | #endif | |
104 | ||
7560fffc LP |
105 | #ifdef HAVE_GCRYPT |
106 | if (f->fsprg_header) | |
107 | munmap(f->fsprg_header, PAGE_ALIGN(f->fsprg_size)); | |
108 | ||
109 | if (f->hmac) | |
110 | gcry_md_close(f->hmac); | |
111 | #endif | |
112 | ||
cec736d2 LP |
113 | free(f); |
114 | } | |
115 | ||
0ac38b70 | 116 | static int journal_file_init_header(JournalFile *f, JournalFile *template) { |
cec736d2 LP |
117 | Header h; |
118 | ssize_t k; | |
119 | int r; | |
120 | ||
121 | assert(f); | |
122 | ||
123 | zero(h); | |
7560fffc | 124 | memcpy(h.signature, HEADER_SIGNATURE, 8); |
23b0b2b2 | 125 | h.header_size = htole64(ALIGN64(sizeof(h))); |
cec736d2 | 126 | |
7560fffc LP |
127 | h.incompatible_flags = |
128 | htole32(f->compress ? HEADER_INCOMPATIBLE_COMPRESSED : 0); | |
129 | ||
130 | h.compatible_flags = | |
131 | htole32(f->authenticate ? HEADER_COMPATIBLE_AUTHENTICATED : 0); | |
132 | ||
cec736d2 LP |
133 | r = sd_id128_randomize(&h.file_id); |
134 | if (r < 0) | |
135 | return r; | |
136 | ||
0ac38b70 LP |
137 | if (template) { |
138 | h.seqnum_id = template->header->seqnum_id; | |
dca6219e | 139 | h.tail_seqnum = template->header->tail_seqnum; |
0ac38b70 LP |
140 | } else |
141 | h.seqnum_id = h.file_id; | |
cec736d2 LP |
142 | |
143 | k = pwrite(f->fd, &h, sizeof(h), 0); | |
144 | if (k < 0) | |
145 | return -errno; | |
146 | ||
147 | if (k != sizeof(h)) | |
148 | return -EIO; | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | static int journal_file_refresh_header(JournalFile *f) { | |
154 | int r; | |
de190aef | 155 | sd_id128_t boot_id; |
cec736d2 LP |
156 | |
157 | assert(f); | |
158 | ||
159 | r = sd_id128_get_machine(&f->header->machine_id); | |
160 | if (r < 0) | |
161 | return r; | |
162 | ||
de190aef | 163 | r = sd_id128_get_boot(&boot_id); |
cec736d2 LP |
164 | if (r < 0) |
165 | return r; | |
166 | ||
de190aef LP |
167 | if (sd_id128_equal(boot_id, f->header->boot_id)) |
168 | f->tail_entry_monotonic_valid = true; | |
169 | ||
170 | f->header->boot_id = boot_id; | |
171 | ||
172 | f->header->state = STATE_ONLINE; | |
b788cc23 | 173 | |
7560fffc LP |
174 | /* Sync the online state to disk */ |
175 | msync(f->header, PAGE_ALIGN(sizeof(Header)), MS_SYNC); | |
176 | fdatasync(f->fd); | |
b788cc23 | 177 | |
cec736d2 LP |
178 | return 0; |
179 | } | |
180 | ||
181 | static int journal_file_verify_header(JournalFile *f) { | |
182 | assert(f); | |
183 | ||
7560fffc | 184 | if (memcmp(f->header->signature, HEADER_SIGNATURE, 8)) |
cec736d2 LP |
185 | return -EBADMSG; |
186 | ||
7560fffc LP |
187 | /* In both read and write mode we refuse to open files with |
188 | * incompatible flags we don't know */ | |
807e17f0 | 189 | #ifdef HAVE_XZ |
7560fffc | 190 | if ((le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) != 0) |
807e17f0 LP |
191 | return -EPROTONOSUPPORT; |
192 | #else | |
cec736d2 LP |
193 | if (f->header->incompatible_flags != 0) |
194 | return -EPROTONOSUPPORT; | |
807e17f0 | 195 | #endif |
cec736d2 | 196 | |
7560fffc LP |
197 | /* When open for writing we refuse to open files with |
198 | * compatible flags, too */ | |
199 | if (f->writable) { | |
200 | #ifdef HAVE_GCRYPT | |
201 | if ((le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_AUTHENTICATED) != 0) | |
202 | return -EPROTONOSUPPORT; | |
203 | #else | |
204 | if (f->header->compatible_flags != 0) | |
205 | return -EPROTONOSUPPORT; | |
206 | #endif | |
207 | } | |
208 | ||
dca6219e LP |
209 | /* The first addition was n_data, so check that we are at least this large */ |
210 | if (le64toh(f->header->header_size) < HEADER_SIZE_MIN) | |
23b0b2b2 LP |
211 | return -EBADMSG; |
212 | ||
213 | if ((uint64_t) f->last_stat.st_size < (le64toh(f->header->header_size) + le64toh(f->header->arena_size))) | |
cec736d2 LP |
214 | return -ENODATA; |
215 | ||
216 | if (f->writable) { | |
ccdbaf91 | 217 | uint8_t state; |
cec736d2 LP |
218 | sd_id128_t machine_id; |
219 | int r; | |
220 | ||
221 | r = sd_id128_get_machine(&machine_id); | |
222 | if (r < 0) | |
223 | return r; | |
224 | ||
225 | if (!sd_id128_equal(machine_id, f->header->machine_id)) | |
226 | return -EHOSTDOWN; | |
227 | ||
de190aef | 228 | state = f->header->state; |
cec736d2 | 229 | |
71fa6f00 LP |
230 | if (state == STATE_ONLINE) { |
231 | log_debug("Journal file %s is already online. Assuming unclean closing.", f->path); | |
232 | return -EBUSY; | |
233 | } else if (state == STATE_ARCHIVED) | |
cec736d2 | 234 | return -ESHUTDOWN; |
71fa6f00 LP |
235 | else if (state != STATE_OFFLINE) { |
236 | log_debug("Journal file %s has unknown state %u.", f->path, state); | |
237 | return -EBUSY; | |
238 | } | |
cec736d2 LP |
239 | } |
240 | ||
7560fffc LP |
241 | f->compress = !!(le32toh(f->header->incompatible_flags) & HEADER_INCOMPATIBLE_COMPRESSED); |
242 | f->authenticate = !!(le32toh(f->header->compatible_flags) & HEADER_COMPATIBLE_AUTHENTICATED); | |
243 | ||
cec736d2 LP |
244 | return 0; |
245 | } | |
246 | ||
247 | static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size) { | |
cec736d2 | 248 | uint64_t old_size, new_size; |
fec2aa2f | 249 | int r; |
cec736d2 LP |
250 | |
251 | assert(f); | |
252 | ||
cec736d2 | 253 | /* We assume that this file is not sparse, and we know that |
38ac38b2 | 254 | * for sure, since we always call posix_fallocate() |
cec736d2 LP |
255 | * ourselves */ |
256 | ||
257 | old_size = | |
23b0b2b2 | 258 | le64toh(f->header->header_size) + |
cec736d2 LP |
259 | le64toh(f->header->arena_size); |
260 | ||
bc85bfee | 261 | new_size = PAGE_ALIGN(offset + size); |
23b0b2b2 LP |
262 | if (new_size < le64toh(f->header->header_size)) |
263 | new_size = le64toh(f->header->header_size); | |
bc85bfee LP |
264 | |
265 | if (new_size <= old_size) | |
cec736d2 LP |
266 | return 0; |
267 | ||
bc85bfee LP |
268 | if (f->metrics.max_size > 0 && |
269 | new_size > f->metrics.max_size) | |
270 | return -E2BIG; | |
cec736d2 | 271 | |
bc85bfee LP |
272 | if (new_size > f->metrics.min_size && |
273 | f->metrics.keep_free > 0) { | |
cec736d2 LP |
274 | struct statvfs svfs; |
275 | ||
276 | if (fstatvfs(f->fd, &svfs) >= 0) { | |
277 | uint64_t available; | |
278 | ||
279 | available = svfs.f_bfree * svfs.f_bsize; | |
280 | ||
bc85bfee LP |
281 | if (available >= f->metrics.keep_free) |
282 | available -= f->metrics.keep_free; | |
cec736d2 LP |
283 | else |
284 | available = 0; | |
285 | ||
286 | if (new_size - old_size > available) | |
287 | return -E2BIG; | |
288 | } | |
289 | } | |
290 | ||
bc85bfee LP |
291 | /* Note that the glibc fallocate() fallback is very |
292 | inefficient, hence we try to minimize the allocation area | |
293 | as we can. */ | |
fec2aa2f GV |
294 | r = posix_fallocate(f->fd, old_size, new_size - old_size); |
295 | if (r != 0) | |
296 | return -r; | |
cec736d2 LP |
297 | |
298 | if (fstat(f->fd, &f->last_stat) < 0) | |
299 | return -errno; | |
300 | ||
23b0b2b2 | 301 | f->header->arena_size = htole64(new_size - le64toh(f->header->header_size)); |
cec736d2 LP |
302 | |
303 | return 0; | |
304 | } | |
305 | ||
16e9f408 | 306 | static int journal_file_move_to(JournalFile *f, int context, uint64_t offset, uint64_t size, void **ret) { |
cec736d2 | 307 | assert(f); |
cec736d2 LP |
308 | assert(ret); |
309 | ||
2a59ea54 | 310 | /* Avoid SIGBUS on invalid accesses */ |
4bbdcdb3 LP |
311 | if (offset + size > (uint64_t) f->last_stat.st_size) { |
312 | /* Hmm, out of range? Let's refresh the fstat() data | |
313 | * first, before we trust that check. */ | |
314 | ||
315 | if (fstat(f->fd, &f->last_stat) < 0 || | |
316 | offset + size > (uint64_t) f->last_stat.st_size) | |
317 | return -EADDRNOTAVAIL; | |
318 | } | |
319 | ||
16e9f408 | 320 | return mmap_cache_get(f->mmap, f->fd, f->prot, context, offset, size, ret); |
cec736d2 LP |
321 | } |
322 | ||
323 | static bool verify_hash(Object *o) { | |
de190aef | 324 | uint64_t h1, h2; |
cec736d2 LP |
325 | |
326 | assert(o); | |
327 | ||
807e17f0 | 328 | if (o->object.type == OBJECT_DATA && !(o->object.flags & OBJECT_COMPRESSED)) { |
cec736d2 | 329 | h1 = le64toh(o->data.hash); |
de190aef LP |
330 | h2 = hash64(o->data.payload, le64toh(o->object.size) - offsetof(Object, data.payload)); |
331 | } else if (o->object.type == OBJECT_FIELD) { | |
332 | h1 = le64toh(o->field.hash); | |
333 | h2 = hash64(o->field.payload, le64toh(o->object.size) - offsetof(Object, field.payload)); | |
334 | } else | |
335 | return true; | |
cec736d2 | 336 | |
de190aef | 337 | return h1 == h2; |
cec736d2 LP |
338 | } |
339 | ||
16e9f408 LP |
340 | static uint64_t minimum_header_size(Object *o) { |
341 | ||
342 | static uint64_t table[] = { | |
343 | [OBJECT_DATA] = sizeof(DataObject), | |
344 | [OBJECT_FIELD] = sizeof(FieldObject), | |
345 | [OBJECT_ENTRY] = sizeof(EntryObject), | |
346 | [OBJECT_DATA_HASH_TABLE] = sizeof(HashTableObject), | |
347 | [OBJECT_FIELD_HASH_TABLE] = sizeof(HashTableObject), | |
348 | [OBJECT_ENTRY_ARRAY] = sizeof(EntryArrayObject), | |
349 | [OBJECT_TAG] = sizeof(TagObject), | |
350 | }; | |
351 | ||
352 | if (o->object.type >= ELEMENTSOF(table) || table[o->object.type] <= 0) | |
353 | return sizeof(ObjectHeader); | |
354 | ||
355 | return table[o->object.type]; | |
356 | } | |
357 | ||
de190aef | 358 | int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret) { |
cec736d2 LP |
359 | int r; |
360 | void *t; | |
361 | Object *o; | |
362 | uint64_t s; | |
16e9f408 | 363 | unsigned context; |
cec736d2 LP |
364 | |
365 | assert(f); | |
366 | assert(ret); | |
367 | ||
16e9f408 LP |
368 | /* One context for each type, plus one catch-all for the rest */ |
369 | context = type > 0 && type < _OBJECT_TYPE_MAX ? type : 0; | |
370 | ||
371 | r = journal_file_move_to(f, context, offset, sizeof(ObjectHeader), &t); | |
cec736d2 LP |
372 | if (r < 0) |
373 | return r; | |
374 | ||
375 | o = (Object*) t; | |
376 | s = le64toh(o->object.size); | |
377 | ||
378 | if (s < sizeof(ObjectHeader)) | |
379 | return -EBADMSG; | |
380 | ||
16e9f408 LP |
381 | if (o->object.type <= OBJECT_UNUSED) |
382 | return -EBADMSG; | |
383 | ||
384 | if (s < minimum_header_size(o)) | |
385 | return -EBADMSG; | |
386 | ||
de190aef | 387 | if (type >= 0 && o->object.type != type) |
cec736d2 LP |
388 | return -EBADMSG; |
389 | ||
390 | if (s > sizeof(ObjectHeader)) { | |
de190aef | 391 | r = journal_file_move_to(f, o->object.type, offset, s, &t); |
cec736d2 LP |
392 | if (r < 0) |
393 | return r; | |
394 | ||
395 | o = (Object*) t; | |
396 | } | |
397 | ||
398 | if (!verify_hash(o)) | |
399 | return -EBADMSG; | |
400 | ||
401 | *ret = o; | |
402 | return 0; | |
403 | } | |
404 | ||
d98cc1f2 | 405 | static uint64_t journal_file_entry_seqnum(JournalFile *f, uint64_t *seqnum) { |
cec736d2 LP |
406 | uint64_t r; |
407 | ||
408 | assert(f); | |
409 | ||
dca6219e | 410 | r = le64toh(f->header->tail_seqnum) + 1; |
c2373f84 LP |
411 | |
412 | if (seqnum) { | |
de190aef | 413 | /* If an external seqnum counter was passed, we update |
c2373f84 LP |
414 | * both the local and the external one, and set it to |
415 | * the maximum of both */ | |
416 | ||
417 | if (*seqnum + 1 > r) | |
418 | r = *seqnum + 1; | |
419 | ||
420 | *seqnum = r; | |
421 | } | |
422 | ||
dca6219e | 423 | f->header->tail_seqnum = htole64(r); |
cec736d2 | 424 | |
dca6219e LP |
425 | if (f->header->head_seqnum == 0) |
426 | f->header->head_seqnum = htole64(r); | |
de190aef | 427 | |
cec736d2 LP |
428 | return r; |
429 | } | |
430 | ||
de190aef | 431 | static int journal_file_append_object(JournalFile *f, int type, uint64_t size, Object **ret, uint64_t *offset) { |
cec736d2 LP |
432 | int r; |
433 | uint64_t p; | |
434 | Object *tail, *o; | |
435 | void *t; | |
436 | ||
437 | assert(f); | |
16e9f408 | 438 | assert(type > 0 && type < _OBJECT_TYPE_MAX); |
cec736d2 LP |
439 | assert(size >= sizeof(ObjectHeader)); |
440 | assert(offset); | |
441 | assert(ret); | |
442 | ||
443 | p = le64toh(f->header->tail_object_offset); | |
cec736d2 | 444 | if (p == 0) |
23b0b2b2 | 445 | p = le64toh(f->header->header_size); |
cec736d2 | 446 | else { |
de190aef | 447 | r = journal_file_move_to_object(f, -1, p, &tail); |
cec736d2 LP |
448 | if (r < 0) |
449 | return r; | |
450 | ||
451 | p += ALIGN64(le64toh(tail->object.size)); | |
452 | } | |
453 | ||
454 | r = journal_file_allocate(f, p, size); | |
455 | if (r < 0) | |
456 | return r; | |
457 | ||
de190aef | 458 | r = journal_file_move_to(f, type, p, size, &t); |
cec736d2 LP |
459 | if (r < 0) |
460 | return r; | |
461 | ||
462 | o = (Object*) t; | |
463 | ||
464 | zero(o->object); | |
de190aef | 465 | o->object.type = type; |
cec736d2 LP |
466 | o->object.size = htole64(size); |
467 | ||
468 | f->header->tail_object_offset = htole64(p); | |
cec736d2 LP |
469 | f->header->n_objects = htole64(le64toh(f->header->n_objects) + 1); |
470 | ||
471 | *ret = o; | |
472 | *offset = p; | |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
de190aef | 477 | static int journal_file_setup_data_hash_table(JournalFile *f) { |
cec736d2 LP |
478 | uint64_t s, p; |
479 | Object *o; | |
480 | int r; | |
481 | ||
482 | assert(f); | |
483 | ||
dfabe643 | 484 | /* We estimate that we need 1 hash table entry per 768 of |
4a92baf3 LP |
485 | journal file and we want to make sure we never get beyond |
486 | 75% fill level. Calculate the hash table size for the | |
487 | maximum file size based on these metrics. */ | |
488 | ||
dfabe643 | 489 | s = (f->metrics.max_size * 4 / 768 / 3) * sizeof(HashItem); |
4a92baf3 LP |
490 | if (s < DEFAULT_DATA_HASH_TABLE_SIZE) |
491 | s = DEFAULT_DATA_HASH_TABLE_SIZE; | |
492 | ||
dfabe643 | 493 | log_info("Reserving %llu entries in hash table.", (unsigned long long) (s / sizeof(HashItem))); |
4a92baf3 | 494 | |
de190aef LP |
495 | r = journal_file_append_object(f, |
496 | OBJECT_DATA_HASH_TABLE, | |
497 | offsetof(Object, hash_table.items) + s, | |
498 | &o, &p); | |
cec736d2 LP |
499 | if (r < 0) |
500 | return r; | |
501 | ||
de190aef | 502 | memset(o->hash_table.items, 0, s); |
cec736d2 | 503 | |
de190aef LP |
504 | f->header->data_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
505 | f->header->data_hash_table_size = htole64(s); | |
cec736d2 LP |
506 | |
507 | return 0; | |
508 | } | |
509 | ||
de190aef | 510 | static int journal_file_setup_field_hash_table(JournalFile *f) { |
cec736d2 LP |
511 | uint64_t s, p; |
512 | Object *o; | |
513 | int r; | |
514 | ||
515 | assert(f); | |
516 | ||
de190aef LP |
517 | s = DEFAULT_FIELD_HASH_TABLE_SIZE; |
518 | r = journal_file_append_object(f, | |
519 | OBJECT_FIELD_HASH_TABLE, | |
520 | offsetof(Object, hash_table.items) + s, | |
521 | &o, &p); | |
cec736d2 LP |
522 | if (r < 0) |
523 | return r; | |
524 | ||
de190aef | 525 | memset(o->hash_table.items, 0, s); |
cec736d2 | 526 | |
de190aef LP |
527 | f->header->field_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
528 | f->header->field_hash_table_size = htole64(s); | |
cec736d2 LP |
529 | |
530 | return 0; | |
531 | } | |
532 | ||
de190aef | 533 | static int journal_file_map_data_hash_table(JournalFile *f) { |
cec736d2 LP |
534 | uint64_t s, p; |
535 | void *t; | |
536 | int r; | |
537 | ||
538 | assert(f); | |
539 | ||
de190aef LP |
540 | p = le64toh(f->header->data_hash_table_offset); |
541 | s = le64toh(f->header->data_hash_table_size); | |
cec736d2 | 542 | |
de190aef | 543 | r = journal_file_move_to(f, |
16e9f408 | 544 | OBJECT_DATA_HASH_TABLE, |
de190aef LP |
545 | p, s, |
546 | &t); | |
cec736d2 LP |
547 | if (r < 0) |
548 | return r; | |
549 | ||
de190aef | 550 | f->data_hash_table = t; |
cec736d2 LP |
551 | return 0; |
552 | } | |
553 | ||
de190aef | 554 | static int journal_file_map_field_hash_table(JournalFile *f) { |
cec736d2 LP |
555 | uint64_t s, p; |
556 | void *t; | |
557 | int r; | |
558 | ||
559 | assert(f); | |
560 | ||
de190aef LP |
561 | p = le64toh(f->header->field_hash_table_offset); |
562 | s = le64toh(f->header->field_hash_table_size); | |
cec736d2 | 563 | |
de190aef | 564 | r = journal_file_move_to(f, |
16e9f408 | 565 | OBJECT_FIELD_HASH_TABLE, |
de190aef LP |
566 | p, s, |
567 | &t); | |
cec736d2 LP |
568 | if (r < 0) |
569 | return r; | |
570 | ||
de190aef | 571 | f->field_hash_table = t; |
cec736d2 LP |
572 | return 0; |
573 | } | |
574 | ||
de190aef LP |
575 | static int journal_file_link_data(JournalFile *f, Object *o, uint64_t offset, uint64_t hash) { |
576 | uint64_t p, h; | |
cec736d2 LP |
577 | int r; |
578 | ||
579 | assert(f); | |
580 | assert(o); | |
581 | assert(offset > 0); | |
de190aef | 582 | assert(o->object.type == OBJECT_DATA); |
cec736d2 | 583 | |
48496df6 LP |
584 | /* This might alter the window we are looking at */ |
585 | ||
de190aef LP |
586 | o->data.next_hash_offset = o->data.next_field_offset = 0; |
587 | o->data.entry_offset = o->data.entry_array_offset = 0; | |
588 | o->data.n_entries = 0; | |
cec736d2 | 589 | |
de190aef | 590 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
8db4213e | 591 | p = le64toh(f->data_hash_table[h].tail_hash_offset); |
cec736d2 LP |
592 | if (p == 0) { |
593 | /* Only entry in the hash table is easy */ | |
de190aef | 594 | f->data_hash_table[h].head_hash_offset = htole64(offset); |
cec736d2 | 595 | } else { |
48496df6 LP |
596 | /* Move back to the previous data object, to patch in |
597 | * pointer */ | |
cec736d2 | 598 | |
de190aef | 599 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
600 | if (r < 0) |
601 | return r; | |
602 | ||
de190aef | 603 | o->data.next_hash_offset = htole64(offset); |
cec736d2 LP |
604 | } |
605 | ||
de190aef | 606 | f->data_hash_table[h].tail_hash_offset = htole64(offset); |
cec736d2 | 607 | |
dca6219e LP |
608 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
609 | f->header->n_data = htole64(le64toh(f->header->n_data) + 1); | |
610 | ||
cec736d2 LP |
611 | return 0; |
612 | } | |
613 | ||
de190aef LP |
614 | int journal_file_find_data_object_with_hash( |
615 | JournalFile *f, | |
616 | const void *data, uint64_t size, uint64_t hash, | |
617 | Object **ret, uint64_t *offset) { | |
48496df6 | 618 | |
de190aef | 619 | uint64_t p, osize, h; |
cec736d2 LP |
620 | int r; |
621 | ||
622 | assert(f); | |
623 | assert(data || size == 0); | |
624 | ||
625 | osize = offsetof(Object, data.payload) + size; | |
626 | ||
bc85bfee LP |
627 | if (f->header->data_hash_table_size == 0) |
628 | return -EBADMSG; | |
629 | ||
de190aef LP |
630 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
631 | p = le64toh(f->data_hash_table[h].head_hash_offset); | |
cec736d2 | 632 | |
de190aef LP |
633 | while (p > 0) { |
634 | Object *o; | |
cec736d2 | 635 | |
de190aef | 636 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
637 | if (r < 0) |
638 | return r; | |
639 | ||
807e17f0 | 640 | if (le64toh(o->data.hash) != hash) |
85a131e8 | 641 | goto next; |
807e17f0 LP |
642 | |
643 | if (o->object.flags & OBJECT_COMPRESSED) { | |
644 | #ifdef HAVE_XZ | |
b785c858 | 645 | uint64_t l, rsize; |
cec736d2 | 646 | |
807e17f0 LP |
647 | l = le64toh(o->object.size); |
648 | if (l <= offsetof(Object, data.payload)) | |
cec736d2 LP |
649 | return -EBADMSG; |
650 | ||
807e17f0 LP |
651 | l -= offsetof(Object, data.payload); |
652 | ||
653 | if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize)) | |
654 | return -EBADMSG; | |
655 | ||
b785c858 | 656 | if (rsize == size && |
807e17f0 LP |
657 | memcmp(f->compress_buffer, data, size) == 0) { |
658 | ||
659 | if (ret) | |
660 | *ret = o; | |
661 | ||
662 | if (offset) | |
663 | *offset = p; | |
664 | ||
665 | return 1; | |
666 | } | |
667 | #else | |
668 | return -EPROTONOSUPPORT; | |
669 | #endif | |
670 | ||
671 | } else if (le64toh(o->object.size) == osize && | |
672 | memcmp(o->data.payload, data, size) == 0) { | |
673 | ||
cec736d2 LP |
674 | if (ret) |
675 | *ret = o; | |
676 | ||
677 | if (offset) | |
678 | *offset = p; | |
679 | ||
de190aef | 680 | return 1; |
cec736d2 LP |
681 | } |
682 | ||
85a131e8 | 683 | next: |
cec736d2 LP |
684 | p = le64toh(o->data.next_hash_offset); |
685 | } | |
686 | ||
de190aef LP |
687 | return 0; |
688 | } | |
689 | ||
690 | int journal_file_find_data_object( | |
691 | JournalFile *f, | |
692 | const void *data, uint64_t size, | |
693 | Object **ret, uint64_t *offset) { | |
694 | ||
695 | uint64_t hash; | |
696 | ||
697 | assert(f); | |
698 | assert(data || size == 0); | |
699 | ||
700 | hash = hash64(data, size); | |
701 | ||
702 | return journal_file_find_data_object_with_hash(f, | |
703 | data, size, hash, | |
704 | ret, offset); | |
705 | } | |
706 | ||
48496df6 LP |
707 | static int journal_file_append_data( |
708 | JournalFile *f, | |
709 | const void *data, uint64_t size, | |
710 | Object **ret, uint64_t *offset) { | |
711 | ||
de190aef LP |
712 | uint64_t hash, p; |
713 | uint64_t osize; | |
714 | Object *o; | |
715 | int r; | |
807e17f0 | 716 | bool compressed = false; |
de190aef LP |
717 | |
718 | assert(f); | |
719 | assert(data || size == 0); | |
720 | ||
721 | hash = hash64(data, size); | |
722 | ||
723 | r = journal_file_find_data_object_with_hash(f, data, size, hash, &o, &p); | |
724 | if (r < 0) | |
725 | return r; | |
726 | else if (r > 0) { | |
727 | ||
728 | if (ret) | |
729 | *ret = o; | |
730 | ||
731 | if (offset) | |
732 | *offset = p; | |
733 | ||
734 | return 0; | |
735 | } | |
736 | ||
737 | osize = offsetof(Object, data.payload) + size; | |
738 | r = journal_file_append_object(f, OBJECT_DATA, osize, &o, &p); | |
cec736d2 LP |
739 | if (r < 0) |
740 | return r; | |
741 | ||
cec736d2 | 742 | o->data.hash = htole64(hash); |
807e17f0 LP |
743 | |
744 | #ifdef HAVE_XZ | |
745 | if (f->compress && | |
746 | size >= COMPRESSION_SIZE_THRESHOLD) { | |
747 | uint64_t rsize; | |
748 | ||
749 | compressed = compress_blob(data, size, o->data.payload, &rsize); | |
750 | ||
751 | if (compressed) { | |
752 | o->object.size = htole64(offsetof(Object, data.payload) + rsize); | |
753 | o->object.flags |= OBJECT_COMPRESSED; | |
754 | ||
807e17f0 LP |
755 | log_debug("Compressed data object %lu -> %lu", (unsigned long) size, (unsigned long) rsize); |
756 | } | |
757 | } | |
758 | #endif | |
759 | ||
64825d3c | 760 | if (!compressed && size > 0) |
807e17f0 | 761 | memcpy(o->data.payload, data, size); |
cec736d2 | 762 | |
de190aef | 763 | r = journal_file_link_data(f, o, p, hash); |
cec736d2 LP |
764 | if (r < 0) |
765 | return r; | |
766 | ||
b0af6f41 LP |
767 | r = journal_file_hmac_put_object(f, OBJECT_DATA, p); |
768 | if (r < 0) | |
769 | return r; | |
770 | ||
48496df6 LP |
771 | /* The linking might have altered the window, so let's |
772 | * refresh our pointer */ | |
773 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
774 | if (r < 0) | |
775 | return r; | |
776 | ||
cec736d2 LP |
777 | if (ret) |
778 | *ret = o; | |
779 | ||
780 | if (offset) | |
de190aef | 781 | *offset = p; |
cec736d2 LP |
782 | |
783 | return 0; | |
784 | } | |
785 | ||
786 | uint64_t journal_file_entry_n_items(Object *o) { | |
787 | assert(o); | |
7be3aa17 | 788 | assert(o->object.type == OBJECT_ENTRY); |
cec736d2 LP |
789 | |
790 | return (le64toh(o->object.size) - offsetof(Object, entry.items)) / sizeof(EntryItem); | |
791 | } | |
792 | ||
de190aef LP |
793 | static uint64_t journal_file_entry_array_n_items(Object *o) { |
794 | assert(o); | |
7be3aa17 | 795 | assert(o->object.type == OBJECT_ENTRY_ARRAY); |
de190aef LP |
796 | |
797 | return (le64toh(o->object.size) - offsetof(Object, entry_array.items)) / sizeof(uint64_t); | |
798 | } | |
799 | ||
800 | static int link_entry_into_array(JournalFile *f, | |
4fd052ae FC |
801 | le64_t *first, |
802 | le64_t *idx, | |
de190aef | 803 | uint64_t p) { |
cec736d2 | 804 | int r; |
de190aef LP |
805 | uint64_t n = 0, ap = 0, q, i, a, hidx; |
806 | Object *o; | |
807 | ||
cec736d2 | 808 | assert(f); |
de190aef LP |
809 | assert(first); |
810 | assert(idx); | |
811 | assert(p > 0); | |
cec736d2 | 812 | |
de190aef LP |
813 | a = le64toh(*first); |
814 | i = hidx = le64toh(*idx); | |
815 | while (a > 0) { | |
816 | ||
817 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); | |
818 | if (r < 0) | |
819 | return r; | |
cec736d2 | 820 | |
de190aef LP |
821 | n = journal_file_entry_array_n_items(o); |
822 | if (i < n) { | |
823 | o->entry_array.items[i] = htole64(p); | |
824 | *idx = htole64(hidx + 1); | |
825 | return 0; | |
826 | } | |
cec736d2 | 827 | |
de190aef LP |
828 | i -= n; |
829 | ap = a; | |
830 | a = le64toh(o->entry_array.next_entry_array_offset); | |
831 | } | |
832 | ||
833 | if (hidx > n) | |
834 | n = (hidx+1) * 2; | |
835 | else | |
836 | n = n * 2; | |
837 | ||
838 | if (n < 4) | |
839 | n = 4; | |
840 | ||
841 | r = journal_file_append_object(f, OBJECT_ENTRY_ARRAY, | |
842 | offsetof(Object, entry_array.items) + n * sizeof(uint64_t), | |
843 | &o, &q); | |
cec736d2 LP |
844 | if (r < 0) |
845 | return r; | |
846 | ||
b0af6f41 LP |
847 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY_ARRAY, q); |
848 | if (r < 0) | |
849 | return r; | |
850 | ||
de190aef | 851 | o->entry_array.items[i] = htole64(p); |
cec736d2 | 852 | |
de190aef | 853 | if (ap == 0) |
7be3aa17 | 854 | *first = htole64(q); |
cec736d2 | 855 | else { |
de190aef | 856 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, ap, &o); |
cec736d2 LP |
857 | if (r < 0) |
858 | return r; | |
859 | ||
de190aef LP |
860 | o->entry_array.next_entry_array_offset = htole64(q); |
861 | } | |
cec736d2 | 862 | |
de190aef LP |
863 | *idx = htole64(hidx + 1); |
864 | ||
865 | return 0; | |
866 | } | |
cec736d2 | 867 | |
de190aef | 868 | static int link_entry_into_array_plus_one(JournalFile *f, |
4fd052ae FC |
869 | le64_t *extra, |
870 | le64_t *first, | |
871 | le64_t *idx, | |
de190aef LP |
872 | uint64_t p) { |
873 | ||
874 | int r; | |
875 | ||
876 | assert(f); | |
877 | assert(extra); | |
878 | assert(first); | |
879 | assert(idx); | |
880 | assert(p > 0); | |
881 | ||
882 | if (*idx == 0) | |
883 | *extra = htole64(p); | |
884 | else { | |
4fd052ae | 885 | le64_t i; |
de190aef | 886 | |
7be3aa17 | 887 | i = htole64(le64toh(*idx) - 1); |
de190aef LP |
888 | r = link_entry_into_array(f, first, &i, p); |
889 | if (r < 0) | |
890 | return r; | |
cec736d2 LP |
891 | } |
892 | ||
de190aef LP |
893 | *idx = htole64(le64toh(*idx) + 1); |
894 | return 0; | |
895 | } | |
896 | ||
897 | static int journal_file_link_entry_item(JournalFile *f, Object *o, uint64_t offset, uint64_t i) { | |
898 | uint64_t p; | |
899 | int r; | |
900 | assert(f); | |
901 | assert(o); | |
902 | assert(offset > 0); | |
903 | ||
904 | p = le64toh(o->entry.items[i].object_offset); | |
905 | if (p == 0) | |
906 | return -EINVAL; | |
907 | ||
908 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
cec736d2 LP |
909 | if (r < 0) |
910 | return r; | |
911 | ||
de190aef LP |
912 | return link_entry_into_array_plus_one(f, |
913 | &o->data.entry_offset, | |
914 | &o->data.entry_array_offset, | |
915 | &o->data.n_entries, | |
916 | offset); | |
cec736d2 LP |
917 | } |
918 | ||
919 | static int journal_file_link_entry(JournalFile *f, Object *o, uint64_t offset) { | |
de190aef | 920 | uint64_t n, i; |
cec736d2 LP |
921 | int r; |
922 | ||
923 | assert(f); | |
924 | assert(o); | |
925 | assert(offset > 0); | |
de190aef | 926 | assert(o->object.type == OBJECT_ENTRY); |
cec736d2 | 927 | |
b788cc23 LP |
928 | __sync_synchronize(); |
929 | ||
cec736d2 | 930 | /* Link up the entry itself */ |
de190aef LP |
931 | r = link_entry_into_array(f, |
932 | &f->header->entry_array_offset, | |
933 | &f->header->n_entries, | |
934 | offset); | |
935 | if (r < 0) | |
936 | return r; | |
cec736d2 | 937 | |
aaf53376 | 938 | /* log_debug("=> %s seqnr=%lu n_entries=%lu", f->path, (unsigned long) o->entry.seqnum, (unsigned long) f->header->n_entries); */ |
cec736d2 | 939 | |
de190aef | 940 | if (f->header->head_entry_realtime == 0) |
0ac38b70 | 941 | f->header->head_entry_realtime = o->entry.realtime; |
cec736d2 | 942 | |
0ac38b70 | 943 | f->header->tail_entry_realtime = o->entry.realtime; |
de190aef LP |
944 | f->header->tail_entry_monotonic = o->entry.monotonic; |
945 | ||
946 | f->tail_entry_monotonic_valid = true; | |
cec736d2 LP |
947 | |
948 | /* Link up the items */ | |
949 | n = journal_file_entry_n_items(o); | |
950 | for (i = 0; i < n; i++) { | |
951 | r = journal_file_link_entry_item(f, o, offset, i); | |
952 | if (r < 0) | |
953 | return r; | |
954 | } | |
955 | ||
cec736d2 LP |
956 | return 0; |
957 | } | |
958 | ||
959 | static int journal_file_append_entry_internal( | |
960 | JournalFile *f, | |
961 | const dual_timestamp *ts, | |
962 | uint64_t xor_hash, | |
963 | const EntryItem items[], unsigned n_items, | |
de190aef | 964 | uint64_t *seqnum, |
cec736d2 LP |
965 | Object **ret, uint64_t *offset) { |
966 | uint64_t np; | |
967 | uint64_t osize; | |
968 | Object *o; | |
969 | int r; | |
970 | ||
971 | assert(f); | |
972 | assert(items || n_items == 0); | |
de190aef | 973 | assert(ts); |
cec736d2 LP |
974 | |
975 | osize = offsetof(Object, entry.items) + (n_items * sizeof(EntryItem)); | |
976 | ||
de190aef | 977 | r = journal_file_append_object(f, OBJECT_ENTRY, osize, &o, &np); |
cec736d2 LP |
978 | if (r < 0) |
979 | return r; | |
980 | ||
d98cc1f2 | 981 | o->entry.seqnum = htole64(journal_file_entry_seqnum(f, seqnum)); |
cec736d2 | 982 | memcpy(o->entry.items, items, n_items * sizeof(EntryItem)); |
de190aef LP |
983 | o->entry.realtime = htole64(ts->realtime); |
984 | o->entry.monotonic = htole64(ts->monotonic); | |
cec736d2 LP |
985 | o->entry.xor_hash = htole64(xor_hash); |
986 | o->entry.boot_id = f->header->boot_id; | |
987 | ||
b0af6f41 LP |
988 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY, np); |
989 | if (r < 0) | |
990 | return r; | |
991 | ||
cec736d2 LP |
992 | r = journal_file_link_entry(f, o, np); |
993 | if (r < 0) | |
994 | return r; | |
995 | ||
996 | if (ret) | |
997 | *ret = o; | |
998 | ||
999 | if (offset) | |
1000 | *offset = np; | |
1001 | ||
1002 | return 0; | |
1003 | } | |
1004 | ||
cf244689 | 1005 | void journal_file_post_change(JournalFile *f) { |
50f20cfd LP |
1006 | assert(f); |
1007 | ||
1008 | /* inotify() does not receive IN_MODIFY events from file | |
1009 | * accesses done via mmap(). After each access we hence | |
1010 | * trigger IN_MODIFY by truncating the journal file to its | |
1011 | * current size which triggers IN_MODIFY. */ | |
1012 | ||
bc85bfee LP |
1013 | __sync_synchronize(); |
1014 | ||
50f20cfd LP |
1015 | if (ftruncate(f->fd, f->last_stat.st_size) < 0) |
1016 | log_error("Failed to to truncate file to its own size: %m"); | |
1017 | } | |
1018 | ||
de190aef | 1019 | int journal_file_append_entry(JournalFile *f, const dual_timestamp *ts, const struct iovec iovec[], unsigned n_iovec, uint64_t *seqnum, Object **ret, uint64_t *offset) { |
cec736d2 LP |
1020 | unsigned i; |
1021 | EntryItem *items; | |
1022 | int r; | |
1023 | uint64_t xor_hash = 0; | |
de190aef | 1024 | struct dual_timestamp _ts; |
cec736d2 LP |
1025 | |
1026 | assert(f); | |
1027 | assert(iovec || n_iovec == 0); | |
1028 | ||
de190aef LP |
1029 | if (!f->writable) |
1030 | return -EPERM; | |
1031 | ||
1032 | if (!ts) { | |
1033 | dual_timestamp_get(&_ts); | |
1034 | ts = &_ts; | |
1035 | } | |
1036 | ||
1037 | if (f->tail_entry_monotonic_valid && | |
1038 | ts->monotonic < le64toh(f->header->tail_entry_monotonic)) | |
1039 | return -EINVAL; | |
1040 | ||
7560fffc LP |
1041 | r = journal_file_maybe_append_tag(f, ts->realtime); |
1042 | if (r < 0) | |
1043 | return r; | |
1044 | ||
64825d3c LP |
1045 | /* alloca() can't take 0, hence let's allocate at least one */ |
1046 | items = alloca(sizeof(EntryItem) * MAX(1, n_iovec)); | |
cec736d2 LP |
1047 | |
1048 | for (i = 0; i < n_iovec; i++) { | |
1049 | uint64_t p; | |
1050 | Object *o; | |
1051 | ||
1052 | r = journal_file_append_data(f, iovec[i].iov_base, iovec[i].iov_len, &o, &p); | |
1053 | if (r < 0) | |
cf244689 | 1054 | return r; |
cec736d2 LP |
1055 | |
1056 | xor_hash ^= le64toh(o->data.hash); | |
1057 | items[i].object_offset = htole64(p); | |
de7b95cd | 1058 | items[i].hash = o->data.hash; |
cec736d2 LP |
1059 | } |
1060 | ||
de190aef | 1061 | r = journal_file_append_entry_internal(f, ts, xor_hash, items, n_iovec, seqnum, ret, offset); |
cec736d2 | 1062 | |
50f20cfd LP |
1063 | journal_file_post_change(f); |
1064 | ||
cec736d2 LP |
1065 | return r; |
1066 | } | |
1067 | ||
de190aef LP |
1068 | static int generic_array_get(JournalFile *f, |
1069 | uint64_t first, | |
1070 | uint64_t i, | |
1071 | Object **ret, uint64_t *offset) { | |
1072 | ||
cec736d2 | 1073 | Object *o; |
6c8a39b8 | 1074 | uint64_t p = 0, a; |
cec736d2 LP |
1075 | int r; |
1076 | ||
1077 | assert(f); | |
1078 | ||
de190aef LP |
1079 | a = first; |
1080 | while (a > 0) { | |
1081 | uint64_t n; | |
cec736d2 | 1082 | |
de190aef LP |
1083 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); |
1084 | if (r < 0) | |
1085 | return r; | |
cec736d2 | 1086 | |
de190aef LP |
1087 | n = journal_file_entry_array_n_items(o); |
1088 | if (i < n) { | |
1089 | p = le64toh(o->entry_array.items[i]); | |
1090 | break; | |
cec736d2 LP |
1091 | } |
1092 | ||
de190aef LP |
1093 | i -= n; |
1094 | a = le64toh(o->entry_array.next_entry_array_offset); | |
1095 | } | |
1096 | ||
1097 | if (a <= 0 || p <= 0) | |
1098 | return 0; | |
1099 | ||
1100 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1101 | if (r < 0) | |
1102 | return r; | |
1103 | ||
1104 | if (ret) | |
1105 | *ret = o; | |
1106 | ||
1107 | if (offset) | |
1108 | *offset = p; | |
1109 | ||
1110 | return 1; | |
1111 | } | |
1112 | ||
1113 | static int generic_array_get_plus_one(JournalFile *f, | |
1114 | uint64_t extra, | |
1115 | uint64_t first, | |
1116 | uint64_t i, | |
1117 | Object **ret, uint64_t *offset) { | |
1118 | ||
1119 | Object *o; | |
1120 | ||
1121 | assert(f); | |
1122 | ||
1123 | if (i == 0) { | |
1124 | int r; | |
1125 | ||
1126 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
cec736d2 LP |
1127 | if (r < 0) |
1128 | return r; | |
1129 | ||
de190aef LP |
1130 | if (ret) |
1131 | *ret = o; | |
cec736d2 | 1132 | |
de190aef LP |
1133 | if (offset) |
1134 | *offset = extra; | |
cec736d2 | 1135 | |
de190aef | 1136 | return 1; |
cec736d2 LP |
1137 | } |
1138 | ||
de190aef LP |
1139 | return generic_array_get(f, first, i-1, ret, offset); |
1140 | } | |
cec736d2 | 1141 | |
de190aef LP |
1142 | enum { |
1143 | TEST_FOUND, | |
1144 | TEST_LEFT, | |
1145 | TEST_RIGHT | |
1146 | }; | |
cec736d2 | 1147 | |
de190aef LP |
1148 | static int generic_array_bisect(JournalFile *f, |
1149 | uint64_t first, | |
1150 | uint64_t n, | |
1151 | uint64_t needle, | |
1152 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1153 | direction_t direction, | |
1154 | Object **ret, | |
1155 | uint64_t *offset, | |
1156 | uint64_t *idx) { | |
1157 | ||
1158 | uint64_t a, p, t = 0, i = 0, last_p = 0; | |
1159 | bool subtract_one = false; | |
1160 | Object *o, *array = NULL; | |
1161 | int r; | |
cec736d2 | 1162 | |
de190aef LP |
1163 | assert(f); |
1164 | assert(test_object); | |
cec736d2 | 1165 | |
de190aef LP |
1166 | a = first; |
1167 | while (a > 0) { | |
1168 | uint64_t left, right, k, lp; | |
1169 | ||
1170 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &array); | |
cec736d2 LP |
1171 | if (r < 0) |
1172 | return r; | |
1173 | ||
de190aef LP |
1174 | k = journal_file_entry_array_n_items(array); |
1175 | right = MIN(k, n); | |
1176 | if (right <= 0) | |
1177 | return 0; | |
cec736d2 | 1178 | |
de190aef LP |
1179 | i = right - 1; |
1180 | lp = p = le64toh(array->entry_array.items[i]); | |
1181 | if (p <= 0) | |
1182 | return -EBADMSG; | |
cec736d2 | 1183 | |
de190aef LP |
1184 | r = test_object(f, p, needle); |
1185 | if (r < 0) | |
1186 | return r; | |
cec736d2 | 1187 | |
de190aef LP |
1188 | if (r == TEST_FOUND) |
1189 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1190 | ||
1191 | if (r == TEST_RIGHT) { | |
1192 | left = 0; | |
1193 | right -= 1; | |
1194 | for (;;) { | |
1195 | if (left == right) { | |
1196 | if (direction == DIRECTION_UP) | |
1197 | subtract_one = true; | |
1198 | ||
1199 | i = left; | |
1200 | goto found; | |
1201 | } | |
1202 | ||
1203 | assert(left < right); | |
1204 | ||
1205 | i = (left + right) / 2; | |
1206 | p = le64toh(array->entry_array.items[i]); | |
1207 | if (p <= 0) | |
1208 | return -EBADMSG; | |
1209 | ||
1210 | r = test_object(f, p, needle); | |
1211 | if (r < 0) | |
1212 | return r; | |
cec736d2 | 1213 | |
de190aef LP |
1214 | if (r == TEST_FOUND) |
1215 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1216 | ||
1217 | if (r == TEST_RIGHT) | |
1218 | right = i; | |
1219 | else | |
1220 | left = i + 1; | |
1221 | } | |
1222 | } | |
1223 | ||
cbdca852 LP |
1224 | if (k > n) { |
1225 | if (direction == DIRECTION_UP) { | |
1226 | i = n; | |
1227 | subtract_one = true; | |
1228 | goto found; | |
1229 | } | |
1230 | ||
cec736d2 | 1231 | return 0; |
cbdca852 | 1232 | } |
cec736d2 | 1233 | |
de190aef LP |
1234 | last_p = lp; |
1235 | ||
1236 | n -= k; | |
1237 | t += k; | |
1238 | a = le64toh(array->entry_array.next_entry_array_offset); | |
cec736d2 LP |
1239 | } |
1240 | ||
1241 | return 0; | |
de190aef LP |
1242 | |
1243 | found: | |
1244 | if (subtract_one && t == 0 && i == 0) | |
1245 | return 0; | |
1246 | ||
1247 | if (subtract_one && i == 0) | |
1248 | p = last_p; | |
1249 | else if (subtract_one) | |
1250 | p = le64toh(array->entry_array.items[i-1]); | |
1251 | else | |
1252 | p = le64toh(array->entry_array.items[i]); | |
1253 | ||
1254 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1255 | if (r < 0) | |
1256 | return r; | |
1257 | ||
1258 | if (ret) | |
1259 | *ret = o; | |
1260 | ||
1261 | if (offset) | |
1262 | *offset = p; | |
1263 | ||
1264 | if (idx) | |
cbdca852 | 1265 | *idx = t + i + (subtract_one ? -1 : 0); |
de190aef LP |
1266 | |
1267 | return 1; | |
cec736d2 LP |
1268 | } |
1269 | ||
de190aef LP |
1270 | static int generic_array_bisect_plus_one(JournalFile *f, |
1271 | uint64_t extra, | |
1272 | uint64_t first, | |
1273 | uint64_t n, | |
1274 | uint64_t needle, | |
1275 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1276 | direction_t direction, | |
1277 | Object **ret, | |
1278 | uint64_t *offset, | |
1279 | uint64_t *idx) { | |
1280 | ||
cec736d2 | 1281 | int r; |
cbdca852 LP |
1282 | bool step_back = false; |
1283 | Object *o; | |
cec736d2 LP |
1284 | |
1285 | assert(f); | |
de190aef | 1286 | assert(test_object); |
cec736d2 | 1287 | |
de190aef LP |
1288 | if (n <= 0) |
1289 | return 0; | |
cec736d2 | 1290 | |
de190aef LP |
1291 | /* This bisects the array in object 'first', but first checks |
1292 | * an extra */ | |
de190aef LP |
1293 | r = test_object(f, extra, needle); |
1294 | if (r < 0) | |
1295 | return r; | |
a536e261 LP |
1296 | |
1297 | if (r == TEST_FOUND) | |
1298 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1299 | ||
cbdca852 LP |
1300 | /* if we are looking with DIRECTION_UP then we need to first |
1301 | see if in the actual array there is a matching entry, and | |
1302 | return the last one of that. But if there isn't any we need | |
1303 | to return this one. Hence remember this, and return it | |
1304 | below. */ | |
1305 | if (r == TEST_LEFT) | |
1306 | step_back = direction == DIRECTION_UP; | |
de190aef | 1307 | |
cbdca852 LP |
1308 | if (r == TEST_RIGHT) { |
1309 | if (direction == DIRECTION_DOWN) | |
1310 | goto found; | |
1311 | else | |
1312 | return 0; | |
a536e261 | 1313 | } |
cec736d2 | 1314 | |
de190aef LP |
1315 | r = generic_array_bisect(f, first, n-1, needle, test_object, direction, ret, offset, idx); |
1316 | ||
cbdca852 LP |
1317 | if (r == 0 && step_back) |
1318 | goto found; | |
1319 | ||
ecf68b1d | 1320 | if (r > 0 && idx) |
de190aef LP |
1321 | (*idx) ++; |
1322 | ||
1323 | return r; | |
cbdca852 LP |
1324 | |
1325 | found: | |
1326 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
1327 | if (r < 0) | |
1328 | return r; | |
1329 | ||
1330 | if (ret) | |
1331 | *ret = o; | |
1332 | ||
1333 | if (offset) | |
1334 | *offset = extra; | |
1335 | ||
1336 | if (idx) | |
1337 | *idx = 0; | |
1338 | ||
1339 | return 1; | |
1340 | } | |
1341 | ||
1342 | static int test_object_offset(JournalFile *f, uint64_t p, uint64_t needle) { | |
1343 | assert(f); | |
1344 | assert(p > 0); | |
1345 | ||
1346 | if (p == needle) | |
1347 | return TEST_FOUND; | |
1348 | else if (p < needle) | |
1349 | return TEST_LEFT; | |
1350 | else | |
1351 | return TEST_RIGHT; | |
1352 | } | |
1353 | ||
1354 | int journal_file_move_to_entry_by_offset( | |
1355 | JournalFile *f, | |
1356 | uint64_t p, | |
1357 | direction_t direction, | |
1358 | Object **ret, | |
1359 | uint64_t *offset) { | |
1360 | ||
1361 | return generic_array_bisect(f, | |
1362 | le64toh(f->header->entry_array_offset), | |
1363 | le64toh(f->header->n_entries), | |
1364 | p, | |
1365 | test_object_offset, | |
1366 | direction, | |
1367 | ret, offset, NULL); | |
de190aef LP |
1368 | } |
1369 | ||
cbdca852 | 1370 | |
de190aef LP |
1371 | static int test_object_seqnum(JournalFile *f, uint64_t p, uint64_t needle) { |
1372 | Object *o; | |
1373 | int r; | |
1374 | ||
1375 | assert(f); | |
1376 | assert(p > 0); | |
1377 | ||
1378 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
cec736d2 LP |
1379 | if (r < 0) |
1380 | return r; | |
1381 | ||
de190aef LP |
1382 | if (le64toh(o->entry.seqnum) == needle) |
1383 | return TEST_FOUND; | |
1384 | else if (le64toh(o->entry.seqnum) < needle) | |
1385 | return TEST_LEFT; | |
1386 | else | |
1387 | return TEST_RIGHT; | |
1388 | } | |
cec736d2 | 1389 | |
de190aef LP |
1390 | int journal_file_move_to_entry_by_seqnum( |
1391 | JournalFile *f, | |
1392 | uint64_t seqnum, | |
1393 | direction_t direction, | |
1394 | Object **ret, | |
1395 | uint64_t *offset) { | |
1396 | ||
1397 | return generic_array_bisect(f, | |
1398 | le64toh(f->header->entry_array_offset), | |
1399 | le64toh(f->header->n_entries), | |
1400 | seqnum, | |
1401 | test_object_seqnum, | |
1402 | direction, | |
1403 | ret, offset, NULL); | |
1404 | } | |
cec736d2 | 1405 | |
de190aef LP |
1406 | static int test_object_realtime(JournalFile *f, uint64_t p, uint64_t needle) { |
1407 | Object *o; | |
1408 | int r; | |
1409 | ||
1410 | assert(f); | |
1411 | assert(p > 0); | |
1412 | ||
1413 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1414 | if (r < 0) | |
1415 | return r; | |
1416 | ||
1417 | if (le64toh(o->entry.realtime) == needle) | |
1418 | return TEST_FOUND; | |
1419 | else if (le64toh(o->entry.realtime) < needle) | |
1420 | return TEST_LEFT; | |
1421 | else | |
1422 | return TEST_RIGHT; | |
cec736d2 LP |
1423 | } |
1424 | ||
de190aef LP |
1425 | int journal_file_move_to_entry_by_realtime( |
1426 | JournalFile *f, | |
1427 | uint64_t realtime, | |
1428 | direction_t direction, | |
1429 | Object **ret, | |
1430 | uint64_t *offset) { | |
1431 | ||
1432 | return generic_array_bisect(f, | |
1433 | le64toh(f->header->entry_array_offset), | |
1434 | le64toh(f->header->n_entries), | |
1435 | realtime, | |
1436 | test_object_realtime, | |
1437 | direction, | |
1438 | ret, offset, NULL); | |
1439 | } | |
1440 | ||
1441 | static int test_object_monotonic(JournalFile *f, uint64_t p, uint64_t needle) { | |
1442 | Object *o; | |
1443 | int r; | |
1444 | ||
1445 | assert(f); | |
1446 | assert(p > 0); | |
1447 | ||
1448 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1449 | if (r < 0) | |
1450 | return r; | |
1451 | ||
1452 | if (le64toh(o->entry.monotonic) == needle) | |
1453 | return TEST_FOUND; | |
1454 | else if (le64toh(o->entry.monotonic) < needle) | |
1455 | return TEST_LEFT; | |
1456 | else | |
1457 | return TEST_RIGHT; | |
1458 | } | |
1459 | ||
1460 | int journal_file_move_to_entry_by_monotonic( | |
1461 | JournalFile *f, | |
1462 | sd_id128_t boot_id, | |
1463 | uint64_t monotonic, | |
1464 | direction_t direction, | |
1465 | Object **ret, | |
1466 | uint64_t *offset) { | |
1467 | ||
10b6f904 | 1468 | char t[9+32+1] = "_BOOT_ID="; |
de190aef LP |
1469 | Object *o; |
1470 | int r; | |
1471 | ||
cbdca852 | 1472 | assert(f); |
de190aef | 1473 | |
cbdca852 | 1474 | sd_id128_to_string(boot_id, t + 9); |
de190aef LP |
1475 | r = journal_file_find_data_object(f, t, strlen(t), &o, NULL); |
1476 | if (r < 0) | |
1477 | return r; | |
cbdca852 | 1478 | if (r == 0) |
de190aef LP |
1479 | return -ENOENT; |
1480 | ||
1481 | return generic_array_bisect_plus_one(f, | |
1482 | le64toh(o->data.entry_offset), | |
1483 | le64toh(o->data.entry_array_offset), | |
1484 | le64toh(o->data.n_entries), | |
1485 | monotonic, | |
1486 | test_object_monotonic, | |
1487 | direction, | |
1488 | ret, offset, NULL); | |
1489 | } | |
1490 | ||
de190aef LP |
1491 | int journal_file_next_entry( |
1492 | JournalFile *f, | |
1493 | Object *o, uint64_t p, | |
1494 | direction_t direction, | |
1495 | Object **ret, uint64_t *offset) { | |
1496 | ||
1497 | uint64_t i, n; | |
cec736d2 LP |
1498 | int r; |
1499 | ||
1500 | assert(f); | |
de190aef LP |
1501 | assert(p > 0 || !o); |
1502 | ||
1503 | n = le64toh(f->header->n_entries); | |
1504 | if (n <= 0) | |
1505 | return 0; | |
cec736d2 LP |
1506 | |
1507 | if (!o) | |
de190aef | 1508 | i = direction == DIRECTION_DOWN ? 0 : n - 1; |
cec736d2 | 1509 | else { |
de190aef | 1510 | if (o->object.type != OBJECT_ENTRY) |
cec736d2 LP |
1511 | return -EINVAL; |
1512 | ||
de190aef LP |
1513 | r = generic_array_bisect(f, |
1514 | le64toh(f->header->entry_array_offset), | |
1515 | le64toh(f->header->n_entries), | |
1516 | p, | |
1517 | test_object_offset, | |
1518 | DIRECTION_DOWN, | |
1519 | NULL, NULL, | |
1520 | &i); | |
1521 | if (r <= 0) | |
1522 | return r; | |
1523 | ||
1524 | if (direction == DIRECTION_DOWN) { | |
1525 | if (i >= n - 1) | |
1526 | return 0; | |
1527 | ||
1528 | i++; | |
1529 | } else { | |
1530 | if (i <= 0) | |
1531 | return 0; | |
1532 | ||
1533 | i--; | |
1534 | } | |
cec736d2 LP |
1535 | } |
1536 | ||
de190aef LP |
1537 | /* And jump to it */ |
1538 | return generic_array_get(f, | |
1539 | le64toh(f->header->entry_array_offset), | |
1540 | i, | |
1541 | ret, offset); | |
1542 | } | |
cec736d2 | 1543 | |
de190aef LP |
1544 | int journal_file_skip_entry( |
1545 | JournalFile *f, | |
1546 | Object *o, uint64_t p, | |
1547 | int64_t skip, | |
1548 | Object **ret, uint64_t *offset) { | |
1549 | ||
1550 | uint64_t i, n; | |
1551 | int r; | |
1552 | ||
1553 | assert(f); | |
1554 | assert(o); | |
1555 | assert(p > 0); | |
1556 | ||
1557 | if (o->object.type != OBJECT_ENTRY) | |
1558 | return -EINVAL; | |
1559 | ||
1560 | r = generic_array_bisect(f, | |
1561 | le64toh(f->header->entry_array_offset), | |
1562 | le64toh(f->header->n_entries), | |
1563 | p, | |
1564 | test_object_offset, | |
1565 | DIRECTION_DOWN, | |
1566 | NULL, NULL, | |
1567 | &i); | |
1568 | if (r <= 0) | |
cec736d2 LP |
1569 | return r; |
1570 | ||
de190aef LP |
1571 | /* Calculate new index */ |
1572 | if (skip < 0) { | |
1573 | if ((uint64_t) -skip >= i) | |
1574 | i = 0; | |
1575 | else | |
1576 | i = i - (uint64_t) -skip; | |
1577 | } else | |
1578 | i += (uint64_t) skip; | |
cec736d2 | 1579 | |
de190aef LP |
1580 | n = le64toh(f->header->n_entries); |
1581 | if (n <= 0) | |
1582 | return -EBADMSG; | |
cec736d2 | 1583 | |
de190aef LP |
1584 | if (i >= n) |
1585 | i = n-1; | |
1586 | ||
1587 | return generic_array_get(f, | |
1588 | le64toh(f->header->entry_array_offset), | |
1589 | i, | |
1590 | ret, offset); | |
cec736d2 LP |
1591 | } |
1592 | ||
de190aef LP |
1593 | int journal_file_next_entry_for_data( |
1594 | JournalFile *f, | |
1595 | Object *o, uint64_t p, | |
1596 | uint64_t data_offset, | |
1597 | direction_t direction, | |
1598 | Object **ret, uint64_t *offset) { | |
1599 | ||
1600 | uint64_t n, i; | |
cec736d2 | 1601 | int r; |
de190aef | 1602 | Object *d; |
cec736d2 LP |
1603 | |
1604 | assert(f); | |
de190aef | 1605 | assert(p > 0 || !o); |
cec736d2 | 1606 | |
de190aef | 1607 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
466ccd92 | 1608 | if (r < 0) |
de190aef | 1609 | return r; |
cec736d2 | 1610 | |
de190aef LP |
1611 | n = le64toh(d->data.n_entries); |
1612 | if (n <= 0) | |
1613 | return n; | |
cec736d2 | 1614 | |
de190aef LP |
1615 | if (!o) |
1616 | i = direction == DIRECTION_DOWN ? 0 : n - 1; | |
1617 | else { | |
1618 | if (o->object.type != OBJECT_ENTRY) | |
1619 | return -EINVAL; | |
cec736d2 | 1620 | |
de190aef LP |
1621 | r = generic_array_bisect_plus_one(f, |
1622 | le64toh(d->data.entry_offset), | |
1623 | le64toh(d->data.entry_array_offset), | |
1624 | le64toh(d->data.n_entries), | |
1625 | p, | |
1626 | test_object_offset, | |
1627 | DIRECTION_DOWN, | |
1628 | NULL, NULL, | |
1629 | &i); | |
1630 | ||
1631 | if (r <= 0) | |
cec736d2 LP |
1632 | return r; |
1633 | ||
de190aef LP |
1634 | if (direction == DIRECTION_DOWN) { |
1635 | if (i >= n - 1) | |
1636 | return 0; | |
cec736d2 | 1637 | |
de190aef LP |
1638 | i++; |
1639 | } else { | |
1640 | if (i <= 0) | |
1641 | return 0; | |
cec736d2 | 1642 | |
de190aef LP |
1643 | i--; |
1644 | } | |
cec736d2 | 1645 | |
de190aef | 1646 | } |
cec736d2 | 1647 | |
de190aef LP |
1648 | return generic_array_get_plus_one(f, |
1649 | le64toh(d->data.entry_offset), | |
1650 | le64toh(d->data.entry_array_offset), | |
1651 | i, | |
1652 | ret, offset); | |
1653 | } | |
cec736d2 | 1654 | |
cbdca852 LP |
1655 | int journal_file_move_to_entry_by_offset_for_data( |
1656 | JournalFile *f, | |
1657 | uint64_t data_offset, | |
1658 | uint64_t p, | |
1659 | direction_t direction, | |
1660 | Object **ret, uint64_t *offset) { | |
1661 | ||
1662 | int r; | |
1663 | Object *d; | |
1664 | ||
1665 | assert(f); | |
1666 | ||
1667 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1668 | if (r < 0) | |
1669 | return r; | |
1670 | ||
1671 | return generic_array_bisect_plus_one(f, | |
1672 | le64toh(d->data.entry_offset), | |
1673 | le64toh(d->data.entry_array_offset), | |
1674 | le64toh(d->data.n_entries), | |
1675 | p, | |
1676 | test_object_offset, | |
1677 | direction, | |
1678 | ret, offset, NULL); | |
1679 | } | |
1680 | ||
1681 | int journal_file_move_to_entry_by_monotonic_for_data( | |
1682 | JournalFile *f, | |
1683 | uint64_t data_offset, | |
1684 | sd_id128_t boot_id, | |
1685 | uint64_t monotonic, | |
1686 | direction_t direction, | |
1687 | Object **ret, uint64_t *offset) { | |
1688 | ||
1689 | char t[9+32+1] = "_BOOT_ID="; | |
1690 | Object *o, *d; | |
1691 | int r; | |
1692 | uint64_t b, z; | |
1693 | ||
1694 | assert(f); | |
1695 | ||
1696 | /* First, seek by time */ | |
1697 | sd_id128_to_string(boot_id, t + 9); | |
1698 | r = journal_file_find_data_object(f, t, strlen(t), &o, &b); | |
1699 | if (r < 0) | |
1700 | return r; | |
1701 | if (r == 0) | |
1702 | return -ENOENT; | |
1703 | ||
1704 | r = generic_array_bisect_plus_one(f, | |
1705 | le64toh(o->data.entry_offset), | |
1706 | le64toh(o->data.entry_array_offset), | |
1707 | le64toh(o->data.n_entries), | |
1708 | monotonic, | |
1709 | test_object_monotonic, | |
1710 | direction, | |
1711 | NULL, &z, NULL); | |
1712 | if (r <= 0) | |
1713 | return r; | |
1714 | ||
1715 | /* And now, continue seeking until we find an entry that | |
1716 | * exists in both bisection arrays */ | |
1717 | ||
1718 | for (;;) { | |
1719 | Object *qo; | |
1720 | uint64_t p, q; | |
1721 | ||
1722 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1723 | if (r < 0) | |
1724 | return r; | |
1725 | ||
1726 | r = generic_array_bisect_plus_one(f, | |
1727 | le64toh(d->data.entry_offset), | |
1728 | le64toh(d->data.entry_array_offset), | |
1729 | le64toh(d->data.n_entries), | |
1730 | z, | |
1731 | test_object_offset, | |
1732 | direction, | |
1733 | NULL, &p, NULL); | |
1734 | if (r <= 0) | |
1735 | return r; | |
1736 | ||
1737 | r = journal_file_move_to_object(f, OBJECT_DATA, b, &o); | |
1738 | if (r < 0) | |
1739 | return r; | |
1740 | ||
1741 | r = generic_array_bisect_plus_one(f, | |
1742 | le64toh(o->data.entry_offset), | |
1743 | le64toh(o->data.entry_array_offset), | |
1744 | le64toh(o->data.n_entries), | |
1745 | p, | |
1746 | test_object_offset, | |
1747 | direction, | |
1748 | &qo, &q, NULL); | |
1749 | ||
1750 | if (r <= 0) | |
1751 | return r; | |
1752 | ||
1753 | if (p == q) { | |
1754 | if (ret) | |
1755 | *ret = qo; | |
1756 | if (offset) | |
1757 | *offset = q; | |
1758 | ||
1759 | return 1; | |
1760 | } | |
1761 | ||
1762 | z = q; | |
1763 | } | |
1764 | ||
1765 | return 0; | |
1766 | } | |
1767 | ||
de190aef LP |
1768 | int journal_file_move_to_entry_by_seqnum_for_data( |
1769 | JournalFile *f, | |
1770 | uint64_t data_offset, | |
1771 | uint64_t seqnum, | |
1772 | direction_t direction, | |
1773 | Object **ret, uint64_t *offset) { | |
cec736d2 | 1774 | |
de190aef LP |
1775 | Object *d; |
1776 | int r; | |
cec736d2 | 1777 | |
91a31dde LP |
1778 | assert(f); |
1779 | ||
de190aef | 1780 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 1781 | if (r < 0) |
de190aef | 1782 | return r; |
cec736d2 | 1783 | |
de190aef LP |
1784 | return generic_array_bisect_plus_one(f, |
1785 | le64toh(d->data.entry_offset), | |
1786 | le64toh(d->data.entry_array_offset), | |
1787 | le64toh(d->data.n_entries), | |
1788 | seqnum, | |
1789 | test_object_seqnum, | |
1790 | direction, | |
1791 | ret, offset, NULL); | |
1792 | } | |
cec736d2 | 1793 | |
de190aef LP |
1794 | int journal_file_move_to_entry_by_realtime_for_data( |
1795 | JournalFile *f, | |
1796 | uint64_t data_offset, | |
1797 | uint64_t realtime, | |
1798 | direction_t direction, | |
1799 | Object **ret, uint64_t *offset) { | |
1800 | ||
1801 | Object *d; | |
1802 | int r; | |
1803 | ||
91a31dde LP |
1804 | assert(f); |
1805 | ||
de190aef | 1806 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 1807 | if (r < 0) |
de190aef LP |
1808 | return r; |
1809 | ||
1810 | return generic_array_bisect_plus_one(f, | |
1811 | le64toh(d->data.entry_offset), | |
1812 | le64toh(d->data.entry_array_offset), | |
1813 | le64toh(d->data.n_entries), | |
1814 | realtime, | |
1815 | test_object_realtime, | |
1816 | direction, | |
1817 | ret, offset, NULL); | |
cec736d2 LP |
1818 | } |
1819 | ||
7560fffc LP |
1820 | static void *fsprg_state(JournalFile *f) { |
1821 | uint64_t a, b; | |
1822 | assert(f); | |
1823 | ||
1824 | if (!f->authenticate) | |
1825 | return NULL; | |
1826 | ||
1827 | a = le64toh(f->fsprg_header->header_size); | |
1828 | b = le64toh(f->fsprg_header->state_size); | |
1829 | ||
1830 | if (a + b > f->fsprg_size) | |
1831 | return NULL; | |
1832 | ||
1833 | return (uint8_t*) f->fsprg_header + a; | |
1834 | } | |
1835 | ||
d98cc1f2 LP |
1836 | static uint64_t journal_file_tag_seqnum(JournalFile *f) { |
1837 | uint64_t r; | |
1838 | ||
1839 | assert(f); | |
1840 | ||
1841 | r = le64toh(f->header->n_tags) + 1; | |
1842 | f->header->n_tags = htole64(r); | |
1843 | ||
1844 | return r; | |
1845 | } | |
1846 | ||
b0af6f41 | 1847 | int journal_file_append_tag(JournalFile *f) { |
7560fffc LP |
1848 | Object *o; |
1849 | uint64_t p; | |
1850 | int r; | |
1851 | ||
1852 | assert(f); | |
1853 | ||
1854 | if (!f->authenticate) | |
1855 | return 0; | |
1856 | ||
1857 | if (!f->hmac_running) | |
1858 | return 0; | |
1859 | ||
1860 | log_debug("Writing tag for epoch %llu\n", (unsigned long long) FSPRG_GetEpoch(fsprg_state(f))); | |
1861 | ||
1862 | assert(f->hmac); | |
1863 | ||
1864 | r = journal_file_append_object(f, OBJECT_TAG, sizeof(struct TagObject), &o, &p); | |
1865 | if (r < 0) | |
1866 | return r; | |
1867 | ||
d98cc1f2 LP |
1868 | o->tag.seqnum = htole64(journal_file_tag_seqnum(f)); |
1869 | ||
1870 | /* Add the tag object itself, so that we can protect its | |
1871 | * header. This will exclude the actual hash value in it */ | |
1872 | r = journal_file_hmac_put_object(f, OBJECT_TAG, p); | |
1873 | if (r < 0) | |
1874 | return r; | |
1875 | ||
7560fffc LP |
1876 | /* Get the HMAC tag and store it in the object */ |
1877 | memcpy(o->tag.tag, gcry_md_read(f->hmac, 0), TAG_LENGTH); | |
1878 | f->hmac_running = false; | |
1879 | ||
1880 | return 0; | |
1881 | } | |
1882 | ||
1883 | static int journal_file_hmac_start(JournalFile *f) { | |
1884 | uint8_t key[256 / 8]; /* Let's pass 256 bit from FSPRG to HMAC */ | |
1885 | ||
1886 | assert(f); | |
1887 | ||
1888 | if (!f->authenticate) | |
1889 | return 0; | |
1890 | ||
1891 | if (f->hmac_running) | |
1892 | return 0; | |
1893 | ||
1894 | /* Prepare HMAC for next cycle */ | |
1895 | gcry_md_reset(f->hmac); | |
1896 | FSPRG_GetKey(fsprg_state(f), key, sizeof(key), 0); | |
1897 | gcry_md_setkey(f->hmac, key, sizeof(key)); | |
1898 | ||
1899 | f->hmac_running = true; | |
1900 | ||
1901 | return 0; | |
1902 | } | |
1903 | ||
1904 | static int journal_file_get_epoch(JournalFile *f, uint64_t realtime, uint64_t *epoch) { | |
1905 | uint64_t t; | |
1906 | ||
1907 | assert(f); | |
1908 | assert(epoch); | |
1909 | assert(f->authenticate); | |
1910 | ||
1911 | if (le64toh(f->fsprg_header->fsprg_start_usec) == 0 || | |
1912 | le64toh(f->fsprg_header->fsprg_interval_usec) == 0) | |
1913 | return -ENOTSUP; | |
1914 | ||
1915 | if (realtime < le64toh(f->fsprg_header->fsprg_start_usec)) | |
1916 | return -ESTALE; | |
1917 | ||
1918 | t = realtime - le64toh(f->fsprg_header->fsprg_start_usec); | |
1919 | t = t / le64toh(f->fsprg_header->fsprg_interval_usec); | |
1920 | ||
1921 | *epoch = t; | |
1922 | return 0; | |
1923 | } | |
1924 | ||
1925 | static int journal_file_need_evolve(JournalFile *f, uint64_t realtime) { | |
1926 | uint64_t goal, epoch; | |
1927 | int r; | |
1928 | assert(f); | |
1929 | ||
1930 | if (!f->authenticate) | |
1931 | return 0; | |
1932 | ||
1933 | r = journal_file_get_epoch(f, realtime, &goal); | |
1934 | if (r < 0) | |
1935 | return r; | |
1936 | ||
1937 | epoch = FSPRG_GetEpoch(fsprg_state(f)); | |
1938 | if (epoch > goal) | |
1939 | return -ESTALE; | |
1940 | ||
1941 | return epoch != goal; | |
1942 | } | |
1943 | ||
1944 | static int journal_file_evolve(JournalFile *f, uint64_t realtime) { | |
1945 | uint64_t goal, epoch; | |
1946 | int r; | |
1947 | ||
1948 | assert(f); | |
1949 | ||
1950 | if (!f->authenticate) | |
1951 | return 0; | |
1952 | ||
1953 | r = journal_file_get_epoch(f, realtime, &goal); | |
1954 | if (r < 0) | |
1955 | return r; | |
1956 | ||
1957 | epoch = FSPRG_GetEpoch(fsprg_state(f)); | |
1958 | if (epoch < goal) | |
1959 | log_debug("Evolving FSPRG key from epoch %llu to %llu.", (unsigned long long) epoch, (unsigned long long) goal); | |
1960 | ||
1961 | for (;;) { | |
1962 | if (epoch > goal) | |
1963 | return -ESTALE; | |
1964 | if (epoch == goal) | |
1965 | return 0; | |
1966 | ||
1967 | FSPRG_Evolve(fsprg_state(f)); | |
1968 | epoch = FSPRG_GetEpoch(fsprg_state(f)); | |
1969 | } | |
1970 | } | |
1971 | ||
1972 | static int journal_file_maybe_append_tag(JournalFile *f, uint64_t realtime) { | |
1973 | int r; | |
1974 | ||
1975 | assert(f); | |
1976 | ||
1977 | if (!f->authenticate) | |
1978 | return 0; | |
1979 | ||
1980 | r = journal_file_need_evolve(f, realtime); | |
1981 | if (r <= 0) | |
1982 | return 0; | |
1983 | ||
1984 | r = journal_file_append_tag(f); | |
1985 | if (r < 0) | |
1986 | return r; | |
1987 | ||
1988 | r = journal_file_evolve(f, realtime); | |
1989 | if (r < 0) | |
1990 | return r; | |
1991 | ||
1992 | r = journal_file_hmac_start(f); | |
1993 | if (r < 0) | |
1994 | return r; | |
1995 | ||
1996 | return 0; | |
1997 | } | |
1998 | ||
1999 | static int journal_file_hmac_put_object(JournalFile *f, int type, uint64_t p) { | |
2000 | int r; | |
2001 | Object *o; | |
2002 | ||
2003 | assert(f); | |
2004 | ||
2005 | if (!f->authenticate) | |
2006 | return 0; | |
2007 | ||
2008 | r = journal_file_hmac_start(f); | |
2009 | if (r < 0) | |
2010 | return r; | |
2011 | ||
2012 | r = journal_file_move_to_object(f, type, p, &o); | |
2013 | if (r < 0) | |
2014 | return r; | |
2015 | ||
2016 | gcry_md_write(f->hmac, o, offsetof(ObjectHeader, payload)); | |
2017 | ||
2018 | switch (o->object.type) { | |
2019 | ||
2020 | case OBJECT_DATA: | |
d98cc1f2 LP |
2021 | /* All but: hash and payload are mutable */ |
2022 | gcry_md_write(f->hmac, &o->data.hash, sizeof(o->data.hash)); | |
7560fffc LP |
2023 | gcry_md_write(f->hmac, o->data.payload, le64toh(o->object.size) - offsetof(DataObject, payload)); |
2024 | break; | |
2025 | ||
2026 | case OBJECT_ENTRY: | |
2027 | /* All */ | |
2028 | gcry_md_write(f->hmac, &o->entry.seqnum, le64toh(o->object.size) - offsetof(EntryObject, seqnum)); | |
2029 | break; | |
2030 | ||
2031 | case OBJECT_FIELD_HASH_TABLE: | |
2032 | case OBJECT_DATA_HASH_TABLE: | |
2033 | case OBJECT_ENTRY_ARRAY: | |
2034 | /* Nothing: everything is mutable */ | |
2035 | break; | |
2036 | ||
2037 | case OBJECT_TAG: | |
d98cc1f2 LP |
2038 | /* All but the tag itself */ |
2039 | gcry_md_write(f->hmac, &o->tag.seqnum, sizeof(o->tag.seqnum)); | |
7560fffc | 2040 | break; |
7560fffc LP |
2041 | default: |
2042 | return -EINVAL; | |
2043 | } | |
2044 | ||
2045 | return 0; | |
2046 | } | |
2047 | ||
2048 | static int journal_file_hmac_put_header(JournalFile *f) { | |
2049 | int r; | |
2050 | ||
2051 | assert(f); | |
2052 | ||
2053 | if (!f->authenticate) | |
2054 | return 0; | |
2055 | ||
2056 | r = journal_file_hmac_start(f); | |
2057 | if (r < 0) | |
2058 | return r; | |
2059 | ||
2060 | /* All but state+reserved, boot_id, arena_size, | |
2061 | * tail_object_offset, n_objects, n_entries, tail_seqnum, | |
2062 | * head_entry_realtime, tail_entry_realtime, | |
2063 | * tail_entry_monotonic, n_data, n_fields, header_tag */ | |
2064 | ||
2065 | gcry_md_write(f->hmac, f->header->signature, offsetof(Header, state) - offsetof(Header, signature)); | |
2066 | gcry_md_write(f->hmac, &f->header->file_id, offsetof(Header, boot_id) - offsetof(Header, file_id)); | |
2067 | gcry_md_write(f->hmac, &f->header->seqnum_id, offsetof(Header, arena_size) - offsetof(Header, seqnum_id)); | |
2068 | gcry_md_write(f->hmac, &f->header->data_hash_table_offset, offsetof(Header, tail_object_offset) - offsetof(Header, data_hash_table_offset)); | |
2069 | gcry_md_write(f->hmac, &f->header->head_seqnum, offsetof(Header, head_entry_realtime) - offsetof(Header, head_seqnum)); | |
2070 | ||
2071 | return 0; | |
2072 | } | |
2073 | ||
2074 | static int journal_file_load_fsprg(JournalFile *f) { | |
2075 | int r, fd = -1; | |
2076 | char *p = NULL; | |
2077 | struct stat st; | |
2078 | FSPRGHeader *m = NULL; | |
2079 | sd_id128_t machine; | |
2080 | ||
2081 | assert(f); | |
2082 | ||
2083 | if (!f->authenticate) | |
2084 | return 0; | |
2085 | ||
2086 | r = sd_id128_get_machine(&machine); | |
2087 | if (r < 0) | |
2088 | return r; | |
2089 | ||
2090 | if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/fsprg", | |
2091 | SD_ID128_FORMAT_VAL(machine)) < 0) | |
2092 | return -ENOMEM; | |
2093 | ||
2094 | fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY, 0600); | |
2095 | if (fd < 0) { | |
2096 | log_error("Failed to open %s: %m", p); | |
2097 | r = -errno; | |
2098 | goto finish; | |
2099 | } | |
2100 | ||
2101 | if (fstat(fd, &st) < 0) { | |
2102 | r = -errno; | |
2103 | goto finish; | |
2104 | } | |
2105 | ||
2106 | if (st.st_size < (off_t) sizeof(FSPRGHeader)) { | |
2107 | r = -ENODATA; | |
2108 | goto finish; | |
2109 | } | |
2110 | ||
2111 | m = mmap(NULL, PAGE_ALIGN(sizeof(FSPRGHeader)), PROT_READ, MAP_SHARED, fd, 0); | |
2112 | if (m == MAP_FAILED) { | |
2113 | m = NULL; | |
2114 | r = -errno; | |
2115 | goto finish; | |
2116 | } | |
2117 | ||
2118 | if (memcmp(m->signature, FSPRG_HEADER_SIGNATURE, 8) != 0) { | |
2119 | r = -EBADMSG; | |
2120 | goto finish; | |
2121 | } | |
2122 | ||
2123 | if (m->incompatible_flags != 0) { | |
2124 | r = -EPROTONOSUPPORT; | |
2125 | goto finish; | |
2126 | } | |
2127 | ||
2128 | if (le64toh(m->header_size) < sizeof(FSPRGHeader)) { | |
2129 | r = -EBADMSG; | |
2130 | goto finish; | |
2131 | } | |
2132 | ||
2133 | if (le64toh(m->state_size) != FSPRG_stateinbytes(m->secpar)) { | |
2134 | r = -EBADMSG; | |
2135 | goto finish; | |
2136 | } | |
2137 | ||
2138 | f->fsprg_size = le64toh(m->header_size) + le64toh(m->state_size); | |
2139 | if ((uint64_t) st.st_size < f->fsprg_size) { | |
2140 | r = -ENODATA; | |
2141 | goto finish; | |
2142 | } | |
2143 | ||
2144 | if (!sd_id128_equal(machine, m->machine_id)) { | |
2145 | r = -EHOSTDOWN; | |
2146 | goto finish; | |
2147 | } | |
2148 | ||
2149 | if (le64toh(m->fsprg_start_usec) <= 0 || | |
2150 | le64toh(m->fsprg_interval_usec) <= 0) { | |
2151 | r = -EBADMSG; | |
2152 | goto finish; | |
2153 | } | |
2154 | ||
2155 | f->fsprg_header = mmap(NULL, PAGE_ALIGN(f->fsprg_size), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); | |
2156 | if (f->fsprg_header == MAP_FAILED) { | |
2157 | f->fsprg_header = NULL; | |
2158 | r = -errno; | |
2159 | goto finish; | |
2160 | } | |
2161 | ||
2162 | r = 0; | |
2163 | ||
2164 | finish: | |
2165 | if (m) | |
2166 | munmap(m, PAGE_ALIGN(sizeof(FSPRGHeader))); | |
2167 | ||
2168 | if (fd >= 0) | |
2169 | close_nointr_nofail(fd); | |
2170 | ||
2171 | free(p); | |
2172 | return r; | |
2173 | } | |
2174 | ||
2175 | static int journal_file_setup_hmac(JournalFile *f) { | |
2176 | gcry_error_t e; | |
2177 | ||
2178 | if (!f->authenticate) | |
2179 | return 0; | |
2180 | ||
2181 | e = gcry_md_open(&f->hmac, GCRY_MD_SHA256, GCRY_MD_FLAG_HMAC); | |
2182 | if (e != 0) | |
2183 | return -ENOTSUP; | |
2184 | ||
2185 | return 0; | |
2186 | } | |
2187 | ||
2188 | static int journal_file_append_first_tag(JournalFile *f) { | |
2189 | int r; | |
2190 | uint64_t p; | |
2191 | ||
2192 | if (!f->authenticate) | |
2193 | return 0; | |
2194 | ||
2195 | log_debug("Calculating first tag..."); | |
2196 | ||
2197 | r = journal_file_hmac_put_header(f); | |
2198 | if (r < 0) | |
2199 | return r; | |
2200 | ||
2201 | p = le64toh(f->header->field_hash_table_offset); | |
2202 | if (p < offsetof(Object, hash_table.items)) | |
2203 | return -EINVAL; | |
2204 | p -= offsetof(Object, hash_table.items); | |
2205 | ||
2206 | r = journal_file_hmac_put_object(f, OBJECT_FIELD_HASH_TABLE, p); | |
2207 | if (r < 0) | |
2208 | return r; | |
2209 | ||
2210 | p = le64toh(f->header->data_hash_table_offset); | |
2211 | if (p < offsetof(Object, hash_table.items)) | |
2212 | return -EINVAL; | |
2213 | p -= offsetof(Object, hash_table.items); | |
2214 | ||
2215 | r = journal_file_hmac_put_object(f, OBJECT_DATA_HASH_TABLE, p); | |
2216 | if (r < 0) | |
2217 | return r; | |
2218 | ||
2219 | r = journal_file_append_tag(f); | |
2220 | if (r < 0) | |
2221 | return r; | |
2222 | ||
2223 | return 0; | |
2224 | } | |
2225 | ||
cec736d2 | 2226 | void journal_file_dump(JournalFile *f) { |
cec736d2 LP |
2227 | Object *o; |
2228 | int r; | |
2229 | uint64_t p; | |
2230 | ||
2231 | assert(f); | |
2232 | ||
dca6219e | 2233 | journal_file_print_header(f); |
cec736d2 | 2234 | |
23b0b2b2 | 2235 | p = le64toh(f->header->header_size); |
cec736d2 | 2236 | while (p != 0) { |
de190aef | 2237 | r = journal_file_move_to_object(f, -1, p, &o); |
cec736d2 LP |
2238 | if (r < 0) |
2239 | goto fail; | |
2240 | ||
2241 | switch (o->object.type) { | |
2242 | ||
2243 | case OBJECT_UNUSED: | |
2244 | printf("Type: OBJECT_UNUSED\n"); | |
2245 | break; | |
2246 | ||
2247 | case OBJECT_DATA: | |
2248 | printf("Type: OBJECT_DATA\n"); | |
2249 | break; | |
2250 | ||
2251 | case OBJECT_ENTRY: | |
3fbf9cbb LP |
2252 | printf("Type: OBJECT_ENTRY %llu %llu %llu\n", |
2253 | (unsigned long long) le64toh(o->entry.seqnum), | |
2254 | (unsigned long long) le64toh(o->entry.monotonic), | |
2255 | (unsigned long long) le64toh(o->entry.realtime)); | |
cec736d2 LP |
2256 | break; |
2257 | ||
de190aef LP |
2258 | case OBJECT_FIELD_HASH_TABLE: |
2259 | printf("Type: OBJECT_FIELD_HASH_TABLE\n"); | |
cec736d2 LP |
2260 | break; |
2261 | ||
de190aef LP |
2262 | case OBJECT_DATA_HASH_TABLE: |
2263 | printf("Type: OBJECT_DATA_HASH_TABLE\n"); | |
2264 | break; | |
2265 | ||
2266 | case OBJECT_ENTRY_ARRAY: | |
2267 | printf("Type: OBJECT_ENTRY_ARRAY\n"); | |
cec736d2 | 2268 | break; |
8144056f | 2269 | |
7560fffc | 2270 | case OBJECT_TAG: |
d98cc1f2 LP |
2271 | printf("Type: OBJECT_TAG %llu\n", |
2272 | (unsigned long long) le64toh(o->tag.seqnum)); | |
8144056f | 2273 | break; |
cec736d2 LP |
2274 | } |
2275 | ||
807e17f0 LP |
2276 | if (o->object.flags & OBJECT_COMPRESSED) |
2277 | printf("Flags: COMPRESSED\n"); | |
2278 | ||
cec736d2 LP |
2279 | if (p == le64toh(f->header->tail_object_offset)) |
2280 | p = 0; | |
2281 | else | |
2282 | p = p + ALIGN64(le64toh(o->object.size)); | |
2283 | } | |
2284 | ||
2285 | return; | |
2286 | fail: | |
2287 | log_error("File corrupt"); | |
2288 | } | |
2289 | ||
dca6219e LP |
2290 | void journal_file_print_header(JournalFile *f) { |
2291 | char a[33], b[33], c[33]; | |
2292 | char x[FORMAT_TIMESTAMP_MAX], y[FORMAT_TIMESTAMP_MAX]; | |
2293 | ||
2294 | assert(f); | |
2295 | ||
2296 | printf("File Path: %s\n" | |
2297 | "File ID: %s\n" | |
2298 | "Machine ID: %s\n" | |
2299 | "Boot ID: %s\n" | |
2300 | "Sequential Number ID: %s\n" | |
dc36ac67 LP |
2301 | "State: %s\n" |
2302 | "Compatible Flags:%s%s\n" | |
2303 | "Incompatible Flags:%s%s\n" | |
dca6219e LP |
2304 | "Header size: %llu\n" |
2305 | "Arena size: %llu\n" | |
2306 | "Data Hash Table Size: %llu\n" | |
2307 | "Field Hash Table Size: %llu\n" | |
2308 | "Objects: %llu\n" | |
2309 | "Entry Objects: %llu\n" | |
2310 | "Rotate Suggested: %s\n" | |
2311 | "Head Sequential Number: %llu\n" | |
2312 | "Tail Sequential Number: %llu\n" | |
2313 | "Head Realtime Timestamp: %s\n" | |
2314 | "Tail Realtime Timestamp: %s\n", | |
2315 | f->path, | |
2316 | sd_id128_to_string(f->header->file_id, a), | |
2317 | sd_id128_to_string(f->header->machine_id, b), | |
2318 | sd_id128_to_string(f->header->boot_id, c), | |
2319 | sd_id128_to_string(f->header->seqnum_id, c), | |
dc36ac67 LP |
2320 | f->header->state == STATE_OFFLINE ? "offline" : |
2321 | f->header->state == STATE_ONLINE ? "online" : | |
2322 | f->header->state == STATE_ARCHIVED ? "archived" : "unknown", | |
7560fffc LP |
2323 | (f->header->compatible_flags & HEADER_COMPATIBLE_AUTHENTICATED) ? " AUTHENTICATED" : "", |
2324 | (f->header->compatible_flags & ~HEADER_COMPATIBLE_AUTHENTICATED) ? " ???" : "", | |
dc36ac67 LP |
2325 | (f->header->incompatible_flags & HEADER_INCOMPATIBLE_COMPRESSED) ? " COMPRESSED" : "", |
2326 | (f->header->incompatible_flags & ~HEADER_INCOMPATIBLE_COMPRESSED) ? " ???" : "", | |
dca6219e LP |
2327 | (unsigned long long) le64toh(f->header->header_size), |
2328 | (unsigned long long) le64toh(f->header->arena_size), | |
2329 | (unsigned long long) le64toh(f->header->data_hash_table_size) / sizeof(HashItem), | |
2330 | (unsigned long long) le64toh(f->header->field_hash_table_size) / sizeof(HashItem), | |
2331 | (unsigned long long) le64toh(f->header->n_objects), | |
2332 | (unsigned long long) le64toh(f->header->n_entries), | |
2333 | yes_no(journal_file_rotate_suggested(f)), | |
2334 | (unsigned long long) le64toh(f->header->head_seqnum), | |
2335 | (unsigned long long) le64toh(f->header->tail_seqnum), | |
2336 | format_timestamp(x, sizeof(x), le64toh(f->header->head_entry_realtime)), | |
2337 | format_timestamp(y, sizeof(y), le64toh(f->header->tail_entry_realtime))); | |
2338 | ||
2339 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) | |
2340 | printf("Data Objects: %llu\n" | |
2341 | "Data Hash Table Fill: %.1f%%\n", | |
2342 | (unsigned long long) le64toh(f->header->n_data), | |
2343 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)))); | |
2344 | ||
2345 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) | |
2346 | printf("Field Objects: %llu\n" | |
2347 | "Field Hash Table Fill: %.1f%%\n", | |
2348 | (unsigned long long) le64toh(f->header->n_fields), | |
2349 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)))); | |
2350 | } | |
2351 | ||
cec736d2 LP |
2352 | int journal_file_open( |
2353 | const char *fname, | |
2354 | int flags, | |
2355 | mode_t mode, | |
7560fffc LP |
2356 | bool compress, |
2357 | bool authenticate, | |
4a92baf3 | 2358 | JournalMetrics *metrics, |
16e9f408 | 2359 | MMapCache *mmap_cache, |
0ac38b70 | 2360 | JournalFile *template, |
cec736d2 LP |
2361 | JournalFile **ret) { |
2362 | ||
2363 | JournalFile *f; | |
2364 | int r; | |
2365 | bool newly_created = false; | |
2366 | ||
2367 | assert(fname); | |
2368 | ||
2369 | if ((flags & O_ACCMODE) != O_RDONLY && | |
2370 | (flags & O_ACCMODE) != O_RDWR) | |
2371 | return -EINVAL; | |
2372 | ||
9447a7f1 LP |
2373 | if (!endswith(fname, ".journal")) |
2374 | return -EINVAL; | |
2375 | ||
cec736d2 LP |
2376 | f = new0(JournalFile, 1); |
2377 | if (!f) | |
2378 | return -ENOMEM; | |
2379 | ||
0ac38b70 | 2380 | f->fd = -1; |
0ac38b70 | 2381 | f->mode = mode; |
cec736d2 | 2382 | |
7560fffc LP |
2383 | f->flags = flags; |
2384 | f->prot = prot_from_flags(flags); | |
2385 | f->writable = (flags & O_ACCMODE) != O_RDONLY; | |
2386 | f->compress = compress; | |
2387 | f->authenticate = authenticate; | |
15944db8 | 2388 | |
16e9f408 LP |
2389 | if (mmap_cache) |
2390 | f->mmap = mmap_cache_ref(mmap_cache); | |
2391 | else { | |
2392 | /* One context for each type, plus the zeroth catchall | |
2393 | * context. One fd for the file plus one for each type | |
2394 | * (which we need during verification */ | |
2395 | f->mmap = mmap_cache_new(_OBJECT_TYPE_MAX, 1 + _OBJECT_TYPE_MAX); | |
2396 | if (!f->mmap) { | |
2397 | r = -ENOMEM; | |
2398 | goto fail; | |
2399 | } | |
2400 | } | |
2401 | ||
cec736d2 LP |
2402 | f->path = strdup(fname); |
2403 | if (!f->path) { | |
2404 | r = -ENOMEM; | |
2405 | goto fail; | |
2406 | } | |
2407 | ||
0ac38b70 LP |
2408 | f->fd = open(f->path, f->flags|O_CLOEXEC, f->mode); |
2409 | if (f->fd < 0) { | |
2410 | r = -errno; | |
2411 | goto fail; | |
2412 | } | |
2413 | ||
cec736d2 LP |
2414 | if (fstat(f->fd, &f->last_stat) < 0) { |
2415 | r = -errno; | |
2416 | goto fail; | |
2417 | } | |
2418 | ||
2419 | if (f->last_stat.st_size == 0 && f->writable) { | |
2420 | newly_created = true; | |
2421 | ||
7560fffc LP |
2422 | /* Try to load the FSPRG state, and if we can't, then |
2423 | * just don't do authentication */ | |
2424 | r = journal_file_load_fsprg(f); | |
2425 | if (r < 0) | |
2426 | f->authenticate = false; | |
2427 | ||
0ac38b70 | 2428 | r = journal_file_init_header(f, template); |
cec736d2 LP |
2429 | if (r < 0) |
2430 | goto fail; | |
2431 | ||
2432 | if (fstat(f->fd, &f->last_stat) < 0) { | |
2433 | r = -errno; | |
2434 | goto fail; | |
2435 | } | |
2436 | } | |
2437 | ||
dca6219e | 2438 | if (f->last_stat.st_size < (off_t) HEADER_SIZE_MIN) { |
cec736d2 LP |
2439 | r = -EIO; |
2440 | goto fail; | |
2441 | } | |
2442 | ||
2443 | f->header = mmap(NULL, PAGE_ALIGN(sizeof(Header)), prot_from_flags(flags), MAP_SHARED, f->fd, 0); | |
2444 | if (f->header == MAP_FAILED) { | |
2445 | f->header = NULL; | |
2446 | r = -errno; | |
2447 | goto fail; | |
2448 | } | |
2449 | ||
2450 | if (!newly_created) { | |
2451 | r = journal_file_verify_header(f); | |
2452 | if (r < 0) | |
2453 | goto fail; | |
b0af6f41 | 2454 | } |
7560fffc | 2455 | |
b0af6f41 | 2456 | if (!newly_created && f->writable) { |
7560fffc LP |
2457 | r = journal_file_load_fsprg(f); |
2458 | if (r < 0) | |
2459 | goto fail; | |
cec736d2 LP |
2460 | } |
2461 | ||
2462 | if (f->writable) { | |
4a92baf3 LP |
2463 | if (metrics) { |
2464 | journal_default_metrics(metrics, f->fd); | |
2465 | f->metrics = *metrics; | |
2466 | } else if (template) | |
2467 | f->metrics = template->metrics; | |
2468 | ||
cec736d2 LP |
2469 | r = journal_file_refresh_header(f); |
2470 | if (r < 0) | |
2471 | goto fail; | |
7560fffc LP |
2472 | |
2473 | r = journal_file_setup_hmac(f); | |
2474 | if (r < 0) | |
2475 | goto fail; | |
cec736d2 LP |
2476 | } |
2477 | ||
2478 | if (newly_created) { | |
de190aef | 2479 | r = journal_file_setup_field_hash_table(f); |
cec736d2 LP |
2480 | if (r < 0) |
2481 | goto fail; | |
2482 | ||
de190aef | 2483 | r = journal_file_setup_data_hash_table(f); |
cec736d2 LP |
2484 | if (r < 0) |
2485 | goto fail; | |
7560fffc LP |
2486 | |
2487 | r = journal_file_append_first_tag(f); | |
2488 | if (r < 0) | |
2489 | goto fail; | |
cec736d2 LP |
2490 | } |
2491 | ||
de190aef | 2492 | r = journal_file_map_field_hash_table(f); |
cec736d2 LP |
2493 | if (r < 0) |
2494 | goto fail; | |
2495 | ||
de190aef | 2496 | r = journal_file_map_data_hash_table(f); |
cec736d2 LP |
2497 | if (r < 0) |
2498 | goto fail; | |
2499 | ||
2500 | if (ret) | |
2501 | *ret = f; | |
2502 | ||
2503 | return 0; | |
2504 | ||
2505 | fail: | |
2506 | journal_file_close(f); | |
2507 | ||
2508 | return r; | |
2509 | } | |
0ac38b70 | 2510 | |
7560fffc | 2511 | int journal_file_rotate(JournalFile **f, bool compress, bool authenticate) { |
0ac38b70 LP |
2512 | char *p; |
2513 | size_t l; | |
2514 | JournalFile *old_file, *new_file = NULL; | |
2515 | int r; | |
2516 | ||
2517 | assert(f); | |
2518 | assert(*f); | |
2519 | ||
2520 | old_file = *f; | |
2521 | ||
2522 | if (!old_file->writable) | |
2523 | return -EINVAL; | |
2524 | ||
2525 | if (!endswith(old_file->path, ".journal")) | |
2526 | return -EINVAL; | |
2527 | ||
2528 | l = strlen(old_file->path); | |
2529 | ||
9447a7f1 | 2530 | p = new(char, l + 1 + 32 + 1 + 16 + 1 + 16 + 1); |
0ac38b70 LP |
2531 | if (!p) |
2532 | return -ENOMEM; | |
2533 | ||
2534 | memcpy(p, old_file->path, l - 8); | |
2535 | p[l-8] = '@'; | |
2536 | sd_id128_to_string(old_file->header->seqnum_id, p + l - 8 + 1); | |
2537 | snprintf(p + l - 8 + 1 + 32, 1 + 16 + 1 + 16 + 8 + 1, | |
2538 | "-%016llx-%016llx.journal", | |
dca6219e | 2539 | (unsigned long long) le64toh((*f)->header->tail_seqnum), |
0ac38b70 LP |
2540 | (unsigned long long) le64toh((*f)->header->tail_entry_realtime)); |
2541 | ||
2542 | r = rename(old_file->path, p); | |
2543 | free(p); | |
2544 | ||
2545 | if (r < 0) | |
2546 | return -errno; | |
2547 | ||
ccdbaf91 | 2548 | old_file->header->state = STATE_ARCHIVED; |
0ac38b70 | 2549 | |
16e9f408 | 2550 | r = journal_file_open(old_file->path, old_file->flags, old_file->mode, compress, authenticate, NULL, old_file->mmap, old_file, &new_file); |
0ac38b70 LP |
2551 | journal_file_close(old_file); |
2552 | ||
2553 | *f = new_file; | |
2554 | return r; | |
2555 | } | |
2556 | ||
9447a7f1 LP |
2557 | int journal_file_open_reliably( |
2558 | const char *fname, | |
2559 | int flags, | |
2560 | mode_t mode, | |
7560fffc LP |
2561 | bool compress, |
2562 | bool authenticate, | |
4a92baf3 | 2563 | JournalMetrics *metrics, |
16e9f408 | 2564 | MMapCache *mmap, |
9447a7f1 LP |
2565 | JournalFile *template, |
2566 | JournalFile **ret) { | |
2567 | ||
2568 | int r; | |
2569 | size_t l; | |
2570 | char *p; | |
2571 | ||
16e9f408 | 2572 | r = journal_file_open(fname, flags, mode, compress, authenticate, metrics, mmap, template, ret); |
0071d9f1 LP |
2573 | if (r != -EBADMSG && /* corrupted */ |
2574 | r != -ENODATA && /* truncated */ | |
2575 | r != -EHOSTDOWN && /* other machine */ | |
a1a1898f LP |
2576 | r != -EPROTONOSUPPORT && /* incompatible feature */ |
2577 | r != -EBUSY && /* unclean shutdown */ | |
2578 | r != -ESHUTDOWN /* already archived */) | |
9447a7f1 LP |
2579 | return r; |
2580 | ||
2581 | if ((flags & O_ACCMODE) == O_RDONLY) | |
2582 | return r; | |
2583 | ||
2584 | if (!(flags & O_CREAT)) | |
2585 | return r; | |
2586 | ||
7560fffc LP |
2587 | if (!endswith(fname, ".journal")) |
2588 | return r; | |
2589 | ||
5c70eab4 LP |
2590 | /* The file is corrupted. Rotate it away and try it again (but only once) */ |
2591 | ||
9447a7f1 LP |
2592 | l = strlen(fname); |
2593 | if (asprintf(&p, "%.*s@%016llx-%016llx.journal~", | |
2594 | (int) (l-8), fname, | |
2595 | (unsigned long long) now(CLOCK_REALTIME), | |
2596 | random_ull()) < 0) | |
2597 | return -ENOMEM; | |
2598 | ||
2599 | r = rename(fname, p); | |
2600 | free(p); | |
2601 | if (r < 0) | |
2602 | return -errno; | |
2603 | ||
a1a1898f | 2604 | log_warning("File %s corrupted or uncleanly shut down, renaming and replacing.", fname); |
9447a7f1 | 2605 | |
16e9f408 | 2606 | return journal_file_open(fname, flags, mode, compress, authenticate, metrics, mmap, template, ret); |
9447a7f1 LP |
2607 | } |
2608 | ||
0ac38b70 LP |
2609 | struct vacuum_info { |
2610 | off_t usage; | |
2611 | char *filename; | |
2612 | ||
2613 | uint64_t realtime; | |
2614 | sd_id128_t seqnum_id; | |
2615 | uint64_t seqnum; | |
5c70eab4 LP |
2616 | |
2617 | bool have_seqnum; | |
0ac38b70 LP |
2618 | }; |
2619 | ||
2620 | static int vacuum_compare(const void *_a, const void *_b) { | |
2621 | const struct vacuum_info *a, *b; | |
2622 | ||
2623 | a = _a; | |
2624 | b = _b; | |
2625 | ||
5c70eab4 LP |
2626 | if (a->have_seqnum && b->have_seqnum && |
2627 | sd_id128_equal(a->seqnum_id, b->seqnum_id)) { | |
0ac38b70 LP |
2628 | if (a->seqnum < b->seqnum) |
2629 | return -1; | |
2630 | else if (a->seqnum > b->seqnum) | |
2631 | return 1; | |
2632 | else | |
2633 | return 0; | |
2634 | } | |
2635 | ||
2636 | if (a->realtime < b->realtime) | |
2637 | return -1; | |
2638 | else if (a->realtime > b->realtime) | |
2639 | return 1; | |
5c70eab4 | 2640 | else if (a->have_seqnum && b->have_seqnum) |
0ac38b70 | 2641 | return memcmp(&a->seqnum_id, &b->seqnum_id, 16); |
5c70eab4 LP |
2642 | else |
2643 | return strcmp(a->filename, b->filename); | |
0ac38b70 LP |
2644 | } |
2645 | ||
2646 | int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t min_free) { | |
2647 | DIR *d; | |
2648 | int r = 0; | |
2649 | struct vacuum_info *list = NULL; | |
2650 | unsigned n_list = 0, n_allocated = 0, i; | |
2651 | uint64_t sum = 0; | |
2652 | ||
2653 | assert(directory); | |
2654 | ||
2655 | if (max_use <= 0) | |
babfc091 | 2656 | return 0; |
0ac38b70 LP |
2657 | |
2658 | d = opendir(directory); | |
2659 | if (!d) | |
2660 | return -errno; | |
2661 | ||
2662 | for (;;) { | |
2663 | int k; | |
2664 | struct dirent buf, *de; | |
2665 | size_t q; | |
2666 | struct stat st; | |
2667 | char *p; | |
7ea07dcd | 2668 | unsigned long long seqnum = 0, realtime; |
0ac38b70 | 2669 | sd_id128_t seqnum_id; |
5c70eab4 | 2670 | bool have_seqnum; |
0ac38b70 LP |
2671 | |
2672 | k = readdir_r(d, &buf, &de); | |
2673 | if (k != 0) { | |
2674 | r = -k; | |
2675 | goto finish; | |
2676 | } | |
2677 | ||
2678 | if (!de) | |
2679 | break; | |
2680 | ||
5c70eab4 LP |
2681 | if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) |
2682 | continue; | |
2683 | ||
2684 | if (!S_ISREG(st.st_mode)) | |
0ac38b70 LP |
2685 | continue; |
2686 | ||
2687 | q = strlen(de->d_name); | |
2688 | ||
5c70eab4 | 2689 | if (endswith(de->d_name, ".journal")) { |
0ac38b70 | 2690 | |
5c70eab4 | 2691 | /* Vacuum archived files */ |
0ac38b70 | 2692 | |
5c70eab4 LP |
2693 | if (q < 1 + 32 + 1 + 16 + 1 + 16 + 8) |
2694 | continue; | |
0ac38b70 | 2695 | |
5c70eab4 LP |
2696 | if (de->d_name[q-8-16-1] != '-' || |
2697 | de->d_name[q-8-16-1-16-1] != '-' || | |
2698 | de->d_name[q-8-16-1-16-1-32-1] != '@') | |
2699 | continue; | |
0ac38b70 | 2700 | |
5c70eab4 LP |
2701 | p = strdup(de->d_name); |
2702 | if (!p) { | |
2703 | r = -ENOMEM; | |
2704 | goto finish; | |
2705 | } | |
0ac38b70 | 2706 | |
5c70eab4 LP |
2707 | de->d_name[q-8-16-1-16-1] = 0; |
2708 | if (sd_id128_from_string(de->d_name + q-8-16-1-16-1-32, &seqnum_id) < 0) { | |
2709 | free(p); | |
2710 | continue; | |
2711 | } | |
2712 | ||
2713 | if (sscanf(de->d_name + q-8-16-1-16, "%16llx-%16llx.journal", &seqnum, &realtime) != 2) { | |
2714 | free(p); | |
2715 | continue; | |
2716 | } | |
2717 | ||
2718 | have_seqnum = true; | |
2719 | ||
2720 | } else if (endswith(de->d_name, ".journal~")) { | |
2721 | unsigned long long tmp; | |
2722 | ||
2723 | /* Vacuum corrupted files */ | |
2724 | ||
2725 | if (q < 1 + 16 + 1 + 16 + 8 + 1) | |
2726 | continue; | |
0ac38b70 | 2727 | |
5c70eab4 LP |
2728 | if (de->d_name[q-1-8-16-1] != '-' || |
2729 | de->d_name[q-1-8-16-1-16-1] != '@') | |
2730 | continue; | |
2731 | ||
2732 | p = strdup(de->d_name); | |
2733 | if (!p) { | |
2734 | r = -ENOMEM; | |
2735 | goto finish; | |
2736 | } | |
2737 | ||
2738 | if (sscanf(de->d_name + q-1-8-16-1-16, "%16llx-%16llx.journal~", &realtime, &tmp) != 2) { | |
2739 | free(p); | |
2740 | continue; | |
2741 | } | |
2742 | ||
2743 | have_seqnum = false; | |
2744 | } else | |
0ac38b70 | 2745 | continue; |
0ac38b70 LP |
2746 | |
2747 | if (n_list >= n_allocated) { | |
2748 | struct vacuum_info *j; | |
2749 | ||
2750 | n_allocated = MAX(n_allocated * 2U, 8U); | |
2751 | j = realloc(list, n_allocated * sizeof(struct vacuum_info)); | |
2752 | if (!j) { | |
2753 | free(p); | |
2754 | r = -ENOMEM; | |
2755 | goto finish; | |
2756 | } | |
2757 | ||
2758 | list = j; | |
2759 | } | |
2760 | ||
2761 | list[n_list].filename = p; | |
a3a52c0f | 2762 | list[n_list].usage = 512UL * (uint64_t) st.st_blocks; |
0ac38b70 LP |
2763 | list[n_list].seqnum = seqnum; |
2764 | list[n_list].realtime = realtime; | |
2765 | list[n_list].seqnum_id = seqnum_id; | |
5c70eab4 | 2766 | list[n_list].have_seqnum = have_seqnum; |
0ac38b70 LP |
2767 | |
2768 | sum += list[n_list].usage; | |
2769 | ||
2770 | n_list ++; | |
2771 | } | |
2772 | ||
64825d3c LP |
2773 | if (n_list > 0) |
2774 | qsort(list, n_list, sizeof(struct vacuum_info), vacuum_compare); | |
0ac38b70 LP |
2775 | |
2776 | for(i = 0; i < n_list; i++) { | |
2777 | struct statvfs ss; | |
2778 | ||
2779 | if (fstatvfs(dirfd(d), &ss) < 0) { | |
2780 | r = -errno; | |
2781 | goto finish; | |
2782 | } | |
2783 | ||
2784 | if (sum <= max_use && | |
2785 | (uint64_t) ss.f_bavail * (uint64_t) ss.f_bsize >= min_free) | |
2786 | break; | |
2787 | ||
2788 | if (unlinkat(dirfd(d), list[i].filename, 0) >= 0) { | |
e7bf07b3 | 2789 | log_info("Deleted archived journal %s/%s.", directory, list[i].filename); |
0ac38b70 LP |
2790 | sum -= list[i].usage; |
2791 | } else if (errno != ENOENT) | |
2792 | log_warning("Failed to delete %s/%s: %m", directory, list[i].filename); | |
2793 | } | |
2794 | ||
2795 | finish: | |
2796 | for (i = 0; i < n_list; i++) | |
2797 | free(list[i].filename); | |
2798 | ||
2799 | free(list); | |
2800 | ||
de190aef LP |
2801 | if (d) |
2802 | closedir(d); | |
2803 | ||
0ac38b70 LP |
2804 | return r; |
2805 | } | |
cf244689 LP |
2806 | |
2807 | int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset) { | |
2808 | uint64_t i, n; | |
2809 | uint64_t q, xor_hash = 0; | |
2810 | int r; | |
2811 | EntryItem *items; | |
2812 | dual_timestamp ts; | |
2813 | ||
2814 | assert(from); | |
2815 | assert(to); | |
2816 | assert(o); | |
2817 | assert(p); | |
2818 | ||
2819 | if (!to->writable) | |
2820 | return -EPERM; | |
2821 | ||
2822 | ts.monotonic = le64toh(o->entry.monotonic); | |
2823 | ts.realtime = le64toh(o->entry.realtime); | |
2824 | ||
2825 | if (to->tail_entry_monotonic_valid && | |
2826 | ts.monotonic < le64toh(to->header->tail_entry_monotonic)) | |
2827 | return -EINVAL; | |
2828 | ||
cf244689 LP |
2829 | n = journal_file_entry_n_items(o); |
2830 | items = alloca(sizeof(EntryItem) * n); | |
2831 | ||
2832 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2833 | uint64_t l, h; |
2834 | le64_t le_hash; | |
cf244689 LP |
2835 | size_t t; |
2836 | void *data; | |
2837 | Object *u; | |
2838 | ||
2839 | q = le64toh(o->entry.items[i].object_offset); | |
2840 | le_hash = o->entry.items[i].hash; | |
2841 | ||
2842 | r = journal_file_move_to_object(from, OBJECT_DATA, q, &o); | |
2843 | if (r < 0) | |
2844 | return r; | |
2845 | ||
2846 | if (le_hash != o->data.hash) | |
2847 | return -EBADMSG; | |
2848 | ||
2849 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2850 | t = (size_t) l; | |
2851 | ||
2852 | /* We hit the limit on 32bit machines */ | |
2853 | if ((uint64_t) t != l) | |
2854 | return -E2BIG; | |
2855 | ||
2856 | if (o->object.flags & OBJECT_COMPRESSED) { | |
2857 | #ifdef HAVE_XZ | |
2858 | uint64_t rsize; | |
2859 | ||
2860 | if (!uncompress_blob(o->data.payload, l, &from->compress_buffer, &from->compress_buffer_size, &rsize)) | |
2861 | return -EBADMSG; | |
2862 | ||
2863 | data = from->compress_buffer; | |
2864 | l = rsize; | |
2865 | #else | |
2866 | return -EPROTONOSUPPORT; | |
2867 | #endif | |
2868 | } else | |
2869 | data = o->data.payload; | |
2870 | ||
2871 | r = journal_file_append_data(to, data, l, &u, &h); | |
2872 | if (r < 0) | |
2873 | return r; | |
2874 | ||
2875 | xor_hash ^= le64toh(u->data.hash); | |
2876 | items[i].object_offset = htole64(h); | |
2877 | items[i].hash = u->data.hash; | |
2878 | ||
2879 | r = journal_file_move_to_object(from, OBJECT_ENTRY, p, &o); | |
2880 | if (r < 0) | |
2881 | return r; | |
2882 | } | |
2883 | ||
2884 | return journal_file_append_entry_internal(to, &ts, xor_hash, items, n, seqnum, ret, offset); | |
2885 | } | |
babfc091 LP |
2886 | |
2887 | void journal_default_metrics(JournalMetrics *m, int fd) { | |
2888 | uint64_t fs_size = 0; | |
2889 | struct statvfs ss; | |
a7bc2c2a | 2890 | char a[FORMAT_BYTES_MAX], b[FORMAT_BYTES_MAX], c[FORMAT_BYTES_MAX], d[FORMAT_BYTES_MAX]; |
babfc091 LP |
2891 | |
2892 | assert(m); | |
2893 | assert(fd >= 0); | |
2894 | ||
2895 | if (fstatvfs(fd, &ss) >= 0) | |
2896 | fs_size = ss.f_frsize * ss.f_blocks; | |
2897 | ||
2898 | if (m->max_use == (uint64_t) -1) { | |
2899 | ||
2900 | if (fs_size > 0) { | |
2901 | m->max_use = PAGE_ALIGN(fs_size / 10); /* 10% of file system size */ | |
2902 | ||
2903 | if (m->max_use > DEFAULT_MAX_USE_UPPER) | |
2904 | m->max_use = DEFAULT_MAX_USE_UPPER; | |
2905 | ||
2906 | if (m->max_use < DEFAULT_MAX_USE_LOWER) | |
2907 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2908 | } else | |
2909 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2910 | } else { | |
2911 | m->max_use = PAGE_ALIGN(m->max_use); | |
2912 | ||
2913 | if (m->max_use < JOURNAL_FILE_SIZE_MIN*2) | |
2914 | m->max_use = JOURNAL_FILE_SIZE_MIN*2; | |
2915 | } | |
2916 | ||
2917 | if (m->max_size == (uint64_t) -1) { | |
2918 | m->max_size = PAGE_ALIGN(m->max_use / 8); /* 8 chunks */ | |
2919 | ||
2920 | if (m->max_size > DEFAULT_MAX_SIZE_UPPER) | |
2921 | m->max_size = DEFAULT_MAX_SIZE_UPPER; | |
2922 | } else | |
2923 | m->max_size = PAGE_ALIGN(m->max_size); | |
2924 | ||
2925 | if (m->max_size < JOURNAL_FILE_SIZE_MIN) | |
2926 | m->max_size = JOURNAL_FILE_SIZE_MIN; | |
2927 | ||
2928 | if (m->max_size*2 > m->max_use) | |
2929 | m->max_use = m->max_size*2; | |
2930 | ||
2931 | if (m->min_size == (uint64_t) -1) | |
2932 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2933 | else { | |
2934 | m->min_size = PAGE_ALIGN(m->min_size); | |
2935 | ||
2936 | if (m->min_size < JOURNAL_FILE_SIZE_MIN) | |
2937 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2938 | ||
2939 | if (m->min_size > m->max_size) | |
2940 | m->max_size = m->min_size; | |
2941 | } | |
2942 | ||
2943 | if (m->keep_free == (uint64_t) -1) { | |
2944 | ||
2945 | if (fs_size > 0) { | |
2946 | m->keep_free = PAGE_ALIGN(fs_size / 20); /* 5% of file system size */ | |
2947 | ||
2948 | if (m->keep_free > DEFAULT_KEEP_FREE_UPPER) | |
2949 | m->keep_free = DEFAULT_KEEP_FREE_UPPER; | |
2950 | ||
2951 | } else | |
2952 | m->keep_free = DEFAULT_KEEP_FREE; | |
2953 | } | |
2954 | ||
e7bf07b3 LP |
2955 | log_info("Fixed max_use=%s max_size=%s min_size=%s keep_free=%s", |
2956 | format_bytes(a, sizeof(a), m->max_use), | |
2957 | format_bytes(b, sizeof(b), m->max_size), | |
2958 | format_bytes(c, sizeof(c), m->min_size), | |
2959 | format_bytes(d, sizeof(d), m->keep_free)); | |
babfc091 | 2960 | } |
08984293 LP |
2961 | |
2962 | int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to) { | |
08984293 LP |
2963 | assert(f); |
2964 | assert(from || to); | |
2965 | ||
2966 | if (from) { | |
162566a4 LP |
2967 | if (f->header->head_entry_realtime == 0) |
2968 | return -ENOENT; | |
08984293 | 2969 | |
162566a4 | 2970 | *from = le64toh(f->header->head_entry_realtime); |
08984293 LP |
2971 | } |
2972 | ||
2973 | if (to) { | |
162566a4 LP |
2974 | if (f->header->tail_entry_realtime == 0) |
2975 | return -ENOENT; | |
08984293 | 2976 | |
162566a4 | 2977 | *to = le64toh(f->header->tail_entry_realtime); |
08984293 LP |
2978 | } |
2979 | ||
2980 | return 1; | |
2981 | } | |
2982 | ||
2983 | int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot_id, usec_t *from, usec_t *to) { | |
2984 | char t[9+32+1] = "_BOOT_ID="; | |
2985 | Object *o; | |
2986 | uint64_t p; | |
2987 | int r; | |
2988 | ||
2989 | assert(f); | |
2990 | assert(from || to); | |
2991 | ||
2992 | sd_id128_to_string(boot_id, t + 9); | |
2993 | ||
2994 | r = journal_file_find_data_object(f, t, strlen(t), &o, &p); | |
2995 | if (r <= 0) | |
2996 | return r; | |
2997 | ||
2998 | if (le64toh(o->data.n_entries) <= 0) | |
2999 | return 0; | |
3000 | ||
3001 | if (from) { | |
3002 | r = journal_file_move_to_object(f, OBJECT_ENTRY, le64toh(o->data.entry_offset), &o); | |
3003 | if (r < 0) | |
3004 | return r; | |
3005 | ||
3006 | *from = le64toh(o->entry.monotonic); | |
3007 | } | |
3008 | ||
3009 | if (to) { | |
3010 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
3011 | if (r < 0) | |
3012 | return r; | |
3013 | ||
3014 | r = generic_array_get_plus_one(f, | |
3015 | le64toh(o->data.entry_offset), | |
3016 | le64toh(o->data.entry_array_offset), | |
3017 | le64toh(o->data.n_entries)-1, | |
3018 | &o, NULL); | |
3019 | if (r <= 0) | |
3020 | return r; | |
3021 | ||
3022 | *to = le64toh(o->entry.monotonic); | |
3023 | } | |
3024 | ||
3025 | return 1; | |
3026 | } | |
dca6219e LP |
3027 | |
3028 | bool journal_file_rotate_suggested(JournalFile *f) { | |
3029 | assert(f); | |
3030 | ||
3031 | /* If we gained new header fields we gained new features, | |
3032 | * hence suggest a rotation */ | |
361f9cbc LP |
3033 | if (le64toh(f->header->header_size) < sizeof(Header)) { |
3034 | log_debug("%s uses an outdated header, suggesting rotation.", f->path); | |
dca6219e | 3035 | return true; |
361f9cbc | 3036 | } |
dca6219e LP |
3037 | |
3038 | /* Let's check if the hash tables grew over a certain fill | |
3039 | * level (75%, borrowing this value from Java's hash table | |
3040 | * implementation), and if so suggest a rotation. To calculate | |
3041 | * the fill level we need the n_data field, which only exists | |
3042 | * in newer versions. */ | |
3043 | ||
3044 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) | |
361f9cbc LP |
3045 | if (le64toh(f->header->n_data) * 4ULL > (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
3046 | log_debug("Data hash table of %s has a fill level at %.1f (%llu of %llu items, %llu file size, %llu bytes per hash table item), suggesting rotation.", | |
3047 | f->path, | |
3048 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem))), | |
3049 | (unsigned long long) le64toh(f->header->n_data), | |
3050 | (unsigned long long) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)), | |
3051 | (unsigned long long) (f->last_stat.st_size), | |
3052 | (unsigned long long) (f->last_stat.st_size / le64toh(f->header->n_data))); | |
dca6219e | 3053 | return true; |
361f9cbc | 3054 | } |
dca6219e LP |
3055 | |
3056 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) | |
361f9cbc LP |
3057 | if (le64toh(f->header->n_fields) * 4ULL > (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
3058 | log_debug("Field hash table of %s has a fill level at %.1f (%llu of %llu items), suggesting rotation.", | |
3059 | f->path, | |
3060 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))), | |
3061 | (unsigned long long) le64toh(f->header->n_fields), | |
3062 | (unsigned long long) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))); | |
dca6219e | 3063 | return true; |
361f9cbc | 3064 | } |
dca6219e LP |
3065 | |
3066 | return false; | |
3067 | } |