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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" | |
0284adc6 | 32 | #include "journal-authenticate.h" |
cec736d2 | 33 | #include "lookup3.h" |
807e17f0 | 34 | #include "compress.h" |
7560fffc | 35 | #include "fsprg.h" |
cec736d2 | 36 | |
4a92baf3 LP |
37 | #define DEFAULT_DATA_HASH_TABLE_SIZE (2047ULL*sizeof(HashItem)) |
38 | #define DEFAULT_FIELD_HASH_TABLE_SIZE (333ULL*sizeof(HashItem)) | |
cec736d2 | 39 | |
be19b7df | 40 | #define COMPRESSION_SIZE_THRESHOLD (512ULL) |
807e17f0 | 41 | |
babfc091 | 42 | /* This is the minimum journal file size */ |
b47ffcfd | 43 | #define JOURNAL_FILE_SIZE_MIN (64ULL*1024ULL) /* 64 KiB */ |
babfc091 LP |
44 | |
45 | /* These are the lower and upper bounds if we deduce the max_use value | |
46 | * from the file system size */ | |
47 | #define DEFAULT_MAX_USE_LOWER (1ULL*1024ULL*1024ULL) /* 1 MiB */ | |
48 | #define DEFAULT_MAX_USE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
49 | ||
50 | /* This is the upper bound if we deduce max_size from max_use */ | |
71100051 | 51 | #define DEFAULT_MAX_SIZE_UPPER (128ULL*1024ULL*1024ULL) /* 128 MiB */ |
babfc091 LP |
52 | |
53 | /* This is the upper bound if we deduce the keep_free value from the | |
54 | * file system size */ | |
55 | #define DEFAULT_KEEP_FREE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
56 | ||
57 | /* This is the keep_free value when we can't determine the system | |
58 | * size */ | |
59 | #define DEFAULT_KEEP_FREE (1024ULL*1024ULL) /* 1 MB */ | |
60 | ||
dca6219e LP |
61 | /* n_data was the first entry we added after the initial file format design */ |
62 | #define HEADER_SIZE_MIN ALIGN64(offsetof(Header, n_data)) | |
cec736d2 | 63 | |
cec736d2 | 64 | void journal_file_close(JournalFile *f) { |
de190aef | 65 | assert(f); |
cec736d2 | 66 | |
feb12d3e | 67 | #ifdef HAVE_GCRYPT |
b0af6f41 | 68 | /* Write the final tag */ |
c586dbf1 | 69 | if (f->seal && f->writable) |
b0af6f41 | 70 | journal_file_append_tag(f); |
feb12d3e | 71 | #endif |
b0af6f41 | 72 | |
7560fffc | 73 | /* Sync everything to disk, before we mark the file offline */ |
16e9f408 LP |
74 | if (f->mmap && f->fd >= 0) |
75 | mmap_cache_close_fd(f->mmap, f->fd); | |
7560fffc LP |
76 | |
77 | if (f->writable && f->fd >= 0) | |
78 | fdatasync(f->fd); | |
79 | ||
d384c7a8 | 80 | if (f->header) { |
cd96b3b8 LP |
81 | /* Mark the file offline. Don't override the archived state if it already is set */ |
82 | if (f->writable && f->header->state == STATE_ONLINE) | |
d384c7a8 | 83 | f->header->state = STATE_OFFLINE; |
cec736d2 | 84 | |
d384c7a8 MS |
85 | munmap(f->header, PAGE_ALIGN(sizeof(Header))); |
86 | } | |
cec736d2 | 87 | |
0ac38b70 LP |
88 | if (f->fd >= 0) |
89 | close_nointr_nofail(f->fd); | |
90 | ||
cec736d2 | 91 | free(f->path); |
807e17f0 | 92 | |
16e9f408 LP |
93 | if (f->mmap) |
94 | mmap_cache_unref(f->mmap); | |
95 | ||
807e17f0 LP |
96 | #ifdef HAVE_XZ |
97 | free(f->compress_buffer); | |
98 | #endif | |
99 | ||
7560fffc | 100 | #ifdef HAVE_GCRYPT |
baed47c3 LP |
101 | if (f->fss_file) |
102 | munmap(f->fss_file, PAGE_ALIGN(f->fss_file_size)); | |
b7c9ae91 LP |
103 | else if (f->fsprg_state) |
104 | free(f->fsprg_state); | |
105 | ||
106 | free(f->fsprg_seed); | |
7560fffc LP |
107 | |
108 | if (f->hmac) | |
109 | gcry_md_close(f->hmac); | |
110 | #endif | |
111 | ||
cec736d2 LP |
112 | free(f); |
113 | } | |
114 | ||
0ac38b70 | 115 | static int journal_file_init_header(JournalFile *f, JournalFile *template) { |
cec736d2 LP |
116 | Header h; |
117 | ssize_t k; | |
118 | int r; | |
119 | ||
120 | assert(f); | |
121 | ||
122 | zero(h); | |
7560fffc | 123 | memcpy(h.signature, HEADER_SIGNATURE, 8); |
23b0b2b2 | 124 | h.header_size = htole64(ALIGN64(sizeof(h))); |
cec736d2 | 125 | |
7560fffc LP |
126 | h.incompatible_flags = |
127 | htole32(f->compress ? HEADER_INCOMPATIBLE_COMPRESSED : 0); | |
128 | ||
129 | h.compatible_flags = | |
baed47c3 | 130 | htole32(f->seal ? HEADER_COMPATIBLE_SEALED : 0); |
7560fffc | 131 | |
cec736d2 LP |
132 | r = sd_id128_randomize(&h.file_id); |
133 | if (r < 0) | |
134 | return r; | |
135 | ||
0ac38b70 LP |
136 | if (template) { |
137 | h.seqnum_id = template->header->seqnum_id; | |
beec0085 | 138 | h.tail_entry_seqnum = template->header->tail_entry_seqnum; |
0ac38b70 LP |
139 | } else |
140 | h.seqnum_id = h.file_id; | |
cec736d2 LP |
141 | |
142 | k = pwrite(f->fd, &h, sizeof(h), 0); | |
143 | if (k < 0) | |
144 | return -errno; | |
145 | ||
146 | if (k != sizeof(h)) | |
147 | return -EIO; | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
152 | static int journal_file_refresh_header(JournalFile *f) { | |
153 | int r; | |
de190aef | 154 | sd_id128_t boot_id; |
cec736d2 LP |
155 | |
156 | assert(f); | |
157 | ||
158 | r = sd_id128_get_machine(&f->header->machine_id); | |
159 | if (r < 0) | |
160 | return r; | |
161 | ||
de190aef | 162 | r = sd_id128_get_boot(&boot_id); |
cec736d2 LP |
163 | if (r < 0) |
164 | return r; | |
165 | ||
de190aef LP |
166 | if (sd_id128_equal(boot_id, f->header->boot_id)) |
167 | f->tail_entry_monotonic_valid = true; | |
168 | ||
169 | f->header->boot_id = boot_id; | |
170 | ||
171 | f->header->state = STATE_ONLINE; | |
b788cc23 | 172 | |
7560fffc LP |
173 | /* Sync the online state to disk */ |
174 | msync(f->header, PAGE_ALIGN(sizeof(Header)), MS_SYNC); | |
175 | fdatasync(f->fd); | |
b788cc23 | 176 | |
cec736d2 LP |
177 | return 0; |
178 | } | |
179 | ||
180 | static int journal_file_verify_header(JournalFile *f) { | |
181 | assert(f); | |
182 | ||
7560fffc | 183 | if (memcmp(f->header->signature, HEADER_SIGNATURE, 8)) |
cec736d2 LP |
184 | return -EBADMSG; |
185 | ||
7560fffc LP |
186 | /* In both read and write mode we refuse to open files with |
187 | * incompatible flags we don't know */ | |
807e17f0 | 188 | #ifdef HAVE_XZ |
7560fffc | 189 | if ((le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) != 0) |
807e17f0 LP |
190 | return -EPROTONOSUPPORT; |
191 | #else | |
cec736d2 LP |
192 | if (f->header->incompatible_flags != 0) |
193 | return -EPROTONOSUPPORT; | |
807e17f0 | 194 | #endif |
cec736d2 | 195 | |
7560fffc LP |
196 | /* When open for writing we refuse to open files with |
197 | * compatible flags, too */ | |
198 | if (f->writable) { | |
199 | #ifdef HAVE_GCRYPT | |
baed47c3 | 200 | if ((le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) != 0) |
7560fffc LP |
201 | return -EPROTONOSUPPORT; |
202 | #else | |
203 | if (f->header->compatible_flags != 0) | |
204 | return -EPROTONOSUPPORT; | |
205 | #endif | |
206 | } | |
207 | ||
db11ac1a LP |
208 | if (f->header->state >= _STATE_MAX) |
209 | return -EBADMSG; | |
210 | ||
dca6219e LP |
211 | /* The first addition was n_data, so check that we are at least this large */ |
212 | if (le64toh(f->header->header_size) < HEADER_SIZE_MIN) | |
23b0b2b2 LP |
213 | return -EBADMSG; |
214 | ||
8088cbd3 | 215 | if (JOURNAL_HEADER_SEALED(f->header) && !JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
beec0085 LP |
216 | return -EBADMSG; |
217 | ||
db11ac1a LP |
218 | if ((le64toh(f->header->header_size) + le64toh(f->header->arena_size)) > (uint64_t) f->last_stat.st_size) |
219 | return -ENODATA; | |
220 | ||
221 | if (le64toh(f->header->tail_object_offset) > (le64toh(f->header->header_size) + le64toh(f->header->arena_size))) | |
222 | return -ENODATA; | |
223 | ||
224 | if (!VALID64(f->header->data_hash_table_offset) || | |
225 | !VALID64(f->header->field_hash_table_offset) || | |
226 | !VALID64(f->header->tail_object_offset) || | |
227 | !VALID64(f->header->entry_array_offset)) | |
cec736d2 LP |
228 | return -ENODATA; |
229 | ||
230 | if (f->writable) { | |
ccdbaf91 | 231 | uint8_t state; |
cec736d2 LP |
232 | sd_id128_t machine_id; |
233 | int r; | |
234 | ||
235 | r = sd_id128_get_machine(&machine_id); | |
236 | if (r < 0) | |
237 | return r; | |
238 | ||
239 | if (!sd_id128_equal(machine_id, f->header->machine_id)) | |
240 | return -EHOSTDOWN; | |
241 | ||
de190aef | 242 | state = f->header->state; |
cec736d2 | 243 | |
71fa6f00 LP |
244 | if (state == STATE_ONLINE) { |
245 | log_debug("Journal file %s is already online. Assuming unclean closing.", f->path); | |
246 | return -EBUSY; | |
247 | } else if (state == STATE_ARCHIVED) | |
cec736d2 | 248 | return -ESHUTDOWN; |
71fa6f00 LP |
249 | else if (state != STATE_OFFLINE) { |
250 | log_debug("Journal file %s has unknown state %u.", f->path, state); | |
251 | return -EBUSY; | |
252 | } | |
cec736d2 LP |
253 | } |
254 | ||
8088cbd3 | 255 | f->compress = JOURNAL_HEADER_COMPRESSED(f->header); |
c586dbf1 LP |
256 | |
257 | if (f->writable) | |
8088cbd3 | 258 | f->seal = JOURNAL_HEADER_SEALED(f->header); |
7560fffc | 259 | |
cec736d2 LP |
260 | return 0; |
261 | } | |
262 | ||
263 | static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size) { | |
cec736d2 | 264 | uint64_t old_size, new_size; |
fec2aa2f | 265 | int r; |
cec736d2 LP |
266 | |
267 | assert(f); | |
268 | ||
cec736d2 | 269 | /* We assume that this file is not sparse, and we know that |
38ac38b2 | 270 | * for sure, since we always call posix_fallocate() |
cec736d2 LP |
271 | * ourselves */ |
272 | ||
273 | old_size = | |
23b0b2b2 | 274 | le64toh(f->header->header_size) + |
cec736d2 LP |
275 | le64toh(f->header->arena_size); |
276 | ||
bc85bfee | 277 | new_size = PAGE_ALIGN(offset + size); |
23b0b2b2 LP |
278 | if (new_size < le64toh(f->header->header_size)) |
279 | new_size = le64toh(f->header->header_size); | |
bc85bfee LP |
280 | |
281 | if (new_size <= old_size) | |
cec736d2 LP |
282 | return 0; |
283 | ||
bc85bfee LP |
284 | if (f->metrics.max_size > 0 && |
285 | new_size > f->metrics.max_size) | |
286 | return -E2BIG; | |
cec736d2 | 287 | |
bc85bfee LP |
288 | if (new_size > f->metrics.min_size && |
289 | f->metrics.keep_free > 0) { | |
cec736d2 LP |
290 | struct statvfs svfs; |
291 | ||
292 | if (fstatvfs(f->fd, &svfs) >= 0) { | |
293 | uint64_t available; | |
294 | ||
295 | available = svfs.f_bfree * svfs.f_bsize; | |
296 | ||
bc85bfee LP |
297 | if (available >= f->metrics.keep_free) |
298 | available -= f->metrics.keep_free; | |
cec736d2 LP |
299 | else |
300 | available = 0; | |
301 | ||
302 | if (new_size - old_size > available) | |
303 | return -E2BIG; | |
304 | } | |
305 | } | |
306 | ||
bc85bfee LP |
307 | /* Note that the glibc fallocate() fallback is very |
308 | inefficient, hence we try to minimize the allocation area | |
309 | as we can. */ | |
fec2aa2f GV |
310 | r = posix_fallocate(f->fd, old_size, new_size - old_size); |
311 | if (r != 0) | |
312 | return -r; | |
cec736d2 LP |
313 | |
314 | if (fstat(f->fd, &f->last_stat) < 0) | |
315 | return -errno; | |
316 | ||
23b0b2b2 | 317 | f->header->arena_size = htole64(new_size - le64toh(f->header->header_size)); |
cec736d2 LP |
318 | |
319 | return 0; | |
320 | } | |
321 | ||
fcde2389 | 322 | static int journal_file_move_to(JournalFile *f, int context, bool keep_always, uint64_t offset, uint64_t size, void **ret) { |
cec736d2 | 323 | assert(f); |
cec736d2 LP |
324 | assert(ret); |
325 | ||
2a59ea54 | 326 | /* Avoid SIGBUS on invalid accesses */ |
4bbdcdb3 LP |
327 | if (offset + size > (uint64_t) f->last_stat.st_size) { |
328 | /* Hmm, out of range? Let's refresh the fstat() data | |
329 | * first, before we trust that check. */ | |
330 | ||
331 | if (fstat(f->fd, &f->last_stat) < 0 || | |
332 | offset + size > (uint64_t) f->last_stat.st_size) | |
333 | return -EADDRNOTAVAIL; | |
334 | } | |
335 | ||
fcde2389 | 336 | return mmap_cache_get(f->mmap, f->fd, f->prot, context, keep_always, offset, size, &f->last_stat, ret); |
cec736d2 LP |
337 | } |
338 | ||
16e9f408 LP |
339 | static uint64_t minimum_header_size(Object *o) { |
340 | ||
341 | static uint64_t table[] = { | |
342 | [OBJECT_DATA] = sizeof(DataObject), | |
343 | [OBJECT_FIELD] = sizeof(FieldObject), | |
344 | [OBJECT_ENTRY] = sizeof(EntryObject), | |
345 | [OBJECT_DATA_HASH_TABLE] = sizeof(HashTableObject), | |
346 | [OBJECT_FIELD_HASH_TABLE] = sizeof(HashTableObject), | |
347 | [OBJECT_ENTRY_ARRAY] = sizeof(EntryArrayObject), | |
348 | [OBJECT_TAG] = sizeof(TagObject), | |
349 | }; | |
350 | ||
351 | if (o->object.type >= ELEMENTSOF(table) || table[o->object.type] <= 0) | |
352 | return sizeof(ObjectHeader); | |
353 | ||
354 | return table[o->object.type]; | |
355 | } | |
356 | ||
de190aef | 357 | int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret) { |
cec736d2 LP |
358 | int r; |
359 | void *t; | |
360 | Object *o; | |
361 | uint64_t s; | |
16e9f408 | 362 | unsigned context; |
cec736d2 LP |
363 | |
364 | assert(f); | |
365 | assert(ret); | |
366 | ||
db11ac1a LP |
367 | /* Objects may only be located at multiple of 64 bit */ |
368 | if (!VALID64(offset)) | |
369 | return -EFAULT; | |
370 | ||
16e9f408 LP |
371 | /* One context for each type, plus one catch-all for the rest */ |
372 | context = type > 0 && type < _OBJECT_TYPE_MAX ? type : 0; | |
373 | ||
fcde2389 | 374 | r = journal_file_move_to(f, context, false, offset, sizeof(ObjectHeader), &t); |
cec736d2 LP |
375 | if (r < 0) |
376 | return r; | |
377 | ||
378 | o = (Object*) t; | |
379 | s = le64toh(o->object.size); | |
380 | ||
381 | if (s < sizeof(ObjectHeader)) | |
382 | return -EBADMSG; | |
383 | ||
16e9f408 LP |
384 | if (o->object.type <= OBJECT_UNUSED) |
385 | return -EBADMSG; | |
386 | ||
387 | if (s < minimum_header_size(o)) | |
388 | return -EBADMSG; | |
389 | ||
de190aef | 390 | if (type >= 0 && o->object.type != type) |
cec736d2 LP |
391 | return -EBADMSG; |
392 | ||
393 | if (s > sizeof(ObjectHeader)) { | |
fcde2389 | 394 | r = journal_file_move_to(f, o->object.type, false, offset, s, &t); |
cec736d2 LP |
395 | if (r < 0) |
396 | return r; | |
397 | ||
398 | o = (Object*) t; | |
399 | } | |
400 | ||
cec736d2 LP |
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 | ||
beec0085 | 410 | r = le64toh(f->header->tail_entry_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 | ||
beec0085 | 423 | f->header->tail_entry_seqnum = htole64(r); |
cec736d2 | 424 | |
beec0085 LP |
425 | if (f->header->head_entry_seqnum == 0) |
426 | f->header->head_entry_seqnum = htole64(r); | |
de190aef | 427 | |
cec736d2 LP |
428 | return r; |
429 | } | |
430 | ||
0284adc6 | 431 | 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 | ||
fcde2389 | 458 | r = journal_file_move_to(f, type, false, 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 | ||
2b43f939 | 493 | log_debug("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, |
fcde2389 | 545 | true, |
de190aef LP |
546 | p, s, |
547 | &t); | |
cec736d2 LP |
548 | if (r < 0) |
549 | return r; | |
550 | ||
de190aef | 551 | f->data_hash_table = t; |
cec736d2 LP |
552 | return 0; |
553 | } | |
554 | ||
de190aef | 555 | static int journal_file_map_field_hash_table(JournalFile *f) { |
cec736d2 LP |
556 | uint64_t s, p; |
557 | void *t; | |
558 | int r; | |
559 | ||
560 | assert(f); | |
561 | ||
de190aef LP |
562 | p = le64toh(f->header->field_hash_table_offset); |
563 | s = le64toh(f->header->field_hash_table_size); | |
cec736d2 | 564 | |
de190aef | 565 | r = journal_file_move_to(f, |
16e9f408 | 566 | OBJECT_FIELD_HASH_TABLE, |
fcde2389 | 567 | true, |
de190aef LP |
568 | p, s, |
569 | &t); | |
cec736d2 LP |
570 | if (r < 0) |
571 | return r; | |
572 | ||
de190aef | 573 | f->field_hash_table = t; |
cec736d2 LP |
574 | return 0; |
575 | } | |
576 | ||
de190aef LP |
577 | static int journal_file_link_data(JournalFile *f, Object *o, uint64_t offset, uint64_t hash) { |
578 | uint64_t p, h; | |
cec736d2 LP |
579 | int r; |
580 | ||
581 | assert(f); | |
582 | assert(o); | |
583 | assert(offset > 0); | |
de190aef | 584 | assert(o->object.type == OBJECT_DATA); |
cec736d2 | 585 | |
48496df6 LP |
586 | /* This might alter the window we are looking at */ |
587 | ||
de190aef LP |
588 | o->data.next_hash_offset = o->data.next_field_offset = 0; |
589 | o->data.entry_offset = o->data.entry_array_offset = 0; | |
590 | o->data.n_entries = 0; | |
cec736d2 | 591 | |
de190aef | 592 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
8db4213e | 593 | p = le64toh(f->data_hash_table[h].tail_hash_offset); |
cec736d2 LP |
594 | if (p == 0) { |
595 | /* Only entry in the hash table is easy */ | |
de190aef | 596 | f->data_hash_table[h].head_hash_offset = htole64(offset); |
cec736d2 | 597 | } else { |
48496df6 LP |
598 | /* Move back to the previous data object, to patch in |
599 | * pointer */ | |
cec736d2 | 600 | |
de190aef | 601 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
602 | if (r < 0) |
603 | return r; | |
604 | ||
de190aef | 605 | o->data.next_hash_offset = htole64(offset); |
cec736d2 LP |
606 | } |
607 | ||
de190aef | 608 | f->data_hash_table[h].tail_hash_offset = htole64(offset); |
cec736d2 | 609 | |
dca6219e LP |
610 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
611 | f->header->n_data = htole64(le64toh(f->header->n_data) + 1); | |
612 | ||
cec736d2 LP |
613 | return 0; |
614 | } | |
615 | ||
de190aef LP |
616 | int journal_file_find_data_object_with_hash( |
617 | JournalFile *f, | |
618 | const void *data, uint64_t size, uint64_t hash, | |
619 | Object **ret, uint64_t *offset) { | |
48496df6 | 620 | |
de190aef | 621 | uint64_t p, osize, h; |
cec736d2 LP |
622 | int r; |
623 | ||
624 | assert(f); | |
625 | assert(data || size == 0); | |
626 | ||
627 | osize = offsetof(Object, data.payload) + size; | |
628 | ||
bc85bfee LP |
629 | if (f->header->data_hash_table_size == 0) |
630 | return -EBADMSG; | |
631 | ||
de190aef LP |
632 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
633 | p = le64toh(f->data_hash_table[h].head_hash_offset); | |
cec736d2 | 634 | |
de190aef LP |
635 | while (p > 0) { |
636 | Object *o; | |
cec736d2 | 637 | |
de190aef | 638 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
639 | if (r < 0) |
640 | return r; | |
641 | ||
807e17f0 | 642 | if (le64toh(o->data.hash) != hash) |
85a131e8 | 643 | goto next; |
807e17f0 LP |
644 | |
645 | if (o->object.flags & OBJECT_COMPRESSED) { | |
646 | #ifdef HAVE_XZ | |
b785c858 | 647 | uint64_t l, rsize; |
cec736d2 | 648 | |
807e17f0 LP |
649 | l = le64toh(o->object.size); |
650 | if (l <= offsetof(Object, data.payload)) | |
cec736d2 LP |
651 | return -EBADMSG; |
652 | ||
807e17f0 LP |
653 | l -= offsetof(Object, data.payload); |
654 | ||
655 | if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize)) | |
656 | return -EBADMSG; | |
657 | ||
b785c858 | 658 | if (rsize == size && |
807e17f0 LP |
659 | memcmp(f->compress_buffer, data, size) == 0) { |
660 | ||
661 | if (ret) | |
662 | *ret = o; | |
663 | ||
664 | if (offset) | |
665 | *offset = p; | |
666 | ||
667 | return 1; | |
668 | } | |
669 | #else | |
670 | return -EPROTONOSUPPORT; | |
671 | #endif | |
672 | ||
673 | } else if (le64toh(o->object.size) == osize && | |
674 | memcmp(o->data.payload, data, size) == 0) { | |
675 | ||
cec736d2 LP |
676 | if (ret) |
677 | *ret = o; | |
678 | ||
679 | if (offset) | |
680 | *offset = p; | |
681 | ||
de190aef | 682 | return 1; |
cec736d2 LP |
683 | } |
684 | ||
85a131e8 | 685 | next: |
cec736d2 LP |
686 | p = le64toh(o->data.next_hash_offset); |
687 | } | |
688 | ||
de190aef LP |
689 | return 0; |
690 | } | |
691 | ||
692 | int journal_file_find_data_object( | |
693 | JournalFile *f, | |
694 | const void *data, uint64_t size, | |
695 | Object **ret, uint64_t *offset) { | |
696 | ||
697 | uint64_t hash; | |
698 | ||
699 | assert(f); | |
700 | assert(data || size == 0); | |
701 | ||
702 | hash = hash64(data, size); | |
703 | ||
704 | return journal_file_find_data_object_with_hash(f, | |
705 | data, size, hash, | |
706 | ret, offset); | |
707 | } | |
708 | ||
48496df6 LP |
709 | static int journal_file_append_data( |
710 | JournalFile *f, | |
711 | const void *data, uint64_t size, | |
712 | Object **ret, uint64_t *offset) { | |
713 | ||
de190aef LP |
714 | uint64_t hash, p; |
715 | uint64_t osize; | |
716 | Object *o; | |
717 | int r; | |
807e17f0 | 718 | bool compressed = false; |
de190aef LP |
719 | |
720 | assert(f); | |
721 | assert(data || size == 0); | |
722 | ||
723 | hash = hash64(data, size); | |
724 | ||
725 | r = journal_file_find_data_object_with_hash(f, data, size, hash, &o, &p); | |
726 | if (r < 0) | |
727 | return r; | |
728 | else if (r > 0) { | |
729 | ||
730 | if (ret) | |
731 | *ret = o; | |
732 | ||
733 | if (offset) | |
734 | *offset = p; | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
739 | osize = offsetof(Object, data.payload) + size; | |
740 | r = journal_file_append_object(f, OBJECT_DATA, osize, &o, &p); | |
cec736d2 LP |
741 | if (r < 0) |
742 | return r; | |
743 | ||
cec736d2 | 744 | o->data.hash = htole64(hash); |
807e17f0 LP |
745 | |
746 | #ifdef HAVE_XZ | |
747 | if (f->compress && | |
748 | size >= COMPRESSION_SIZE_THRESHOLD) { | |
749 | uint64_t rsize; | |
750 | ||
751 | compressed = compress_blob(data, size, o->data.payload, &rsize); | |
752 | ||
753 | if (compressed) { | |
754 | o->object.size = htole64(offsetof(Object, data.payload) + rsize); | |
755 | o->object.flags |= OBJECT_COMPRESSED; | |
756 | ||
807e17f0 LP |
757 | log_debug("Compressed data object %lu -> %lu", (unsigned long) size, (unsigned long) rsize); |
758 | } | |
759 | } | |
760 | #endif | |
761 | ||
64825d3c | 762 | if (!compressed && size > 0) |
807e17f0 | 763 | memcpy(o->data.payload, data, size); |
cec736d2 | 764 | |
de190aef | 765 | r = journal_file_link_data(f, o, p, hash); |
cec736d2 LP |
766 | if (r < 0) |
767 | return r; | |
768 | ||
feb12d3e | 769 | #ifdef HAVE_GCRYPT |
b0af6f41 LP |
770 | r = journal_file_hmac_put_object(f, OBJECT_DATA, p); |
771 | if (r < 0) | |
772 | return r; | |
feb12d3e | 773 | #endif |
b0af6f41 | 774 | |
48496df6 LP |
775 | /* The linking might have altered the window, so let's |
776 | * refresh our pointer */ | |
777 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
778 | if (r < 0) | |
779 | return r; | |
780 | ||
cec736d2 LP |
781 | if (ret) |
782 | *ret = o; | |
783 | ||
784 | if (offset) | |
de190aef | 785 | *offset = p; |
cec736d2 LP |
786 | |
787 | return 0; | |
788 | } | |
789 | ||
790 | uint64_t journal_file_entry_n_items(Object *o) { | |
791 | assert(o); | |
7be3aa17 | 792 | assert(o->object.type == OBJECT_ENTRY); |
cec736d2 LP |
793 | |
794 | return (le64toh(o->object.size) - offsetof(Object, entry.items)) / sizeof(EntryItem); | |
795 | } | |
796 | ||
0284adc6 | 797 | uint64_t journal_file_entry_array_n_items(Object *o) { |
de190aef | 798 | assert(o); |
7be3aa17 | 799 | assert(o->object.type == OBJECT_ENTRY_ARRAY); |
de190aef LP |
800 | |
801 | return (le64toh(o->object.size) - offsetof(Object, entry_array.items)) / sizeof(uint64_t); | |
802 | } | |
803 | ||
fb9a24b6 LP |
804 | uint64_t journal_file_hash_table_n_items(Object *o) { |
805 | assert(o); | |
806 | assert(o->object.type == OBJECT_DATA_HASH_TABLE || | |
807 | o->object.type == OBJECT_FIELD_HASH_TABLE); | |
808 | ||
809 | return (le64toh(o->object.size) - offsetof(Object, hash_table.items)) / sizeof(HashItem); | |
810 | } | |
811 | ||
de190aef | 812 | static int link_entry_into_array(JournalFile *f, |
4fd052ae FC |
813 | le64_t *first, |
814 | le64_t *idx, | |
de190aef | 815 | uint64_t p) { |
cec736d2 | 816 | int r; |
de190aef LP |
817 | uint64_t n = 0, ap = 0, q, i, a, hidx; |
818 | Object *o; | |
819 | ||
cec736d2 | 820 | assert(f); |
de190aef LP |
821 | assert(first); |
822 | assert(idx); | |
823 | assert(p > 0); | |
cec736d2 | 824 | |
de190aef LP |
825 | a = le64toh(*first); |
826 | i = hidx = le64toh(*idx); | |
827 | while (a > 0) { | |
828 | ||
829 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); | |
830 | if (r < 0) | |
831 | return r; | |
cec736d2 | 832 | |
de190aef LP |
833 | n = journal_file_entry_array_n_items(o); |
834 | if (i < n) { | |
835 | o->entry_array.items[i] = htole64(p); | |
836 | *idx = htole64(hidx + 1); | |
837 | return 0; | |
838 | } | |
cec736d2 | 839 | |
de190aef LP |
840 | i -= n; |
841 | ap = a; | |
842 | a = le64toh(o->entry_array.next_entry_array_offset); | |
843 | } | |
844 | ||
845 | if (hidx > n) | |
846 | n = (hidx+1) * 2; | |
847 | else | |
848 | n = n * 2; | |
849 | ||
850 | if (n < 4) | |
851 | n = 4; | |
852 | ||
853 | r = journal_file_append_object(f, OBJECT_ENTRY_ARRAY, | |
854 | offsetof(Object, entry_array.items) + n * sizeof(uint64_t), | |
855 | &o, &q); | |
cec736d2 LP |
856 | if (r < 0) |
857 | return r; | |
858 | ||
feb12d3e | 859 | #ifdef HAVE_GCRYPT |
b0af6f41 LP |
860 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY_ARRAY, q); |
861 | if (r < 0) | |
862 | return r; | |
feb12d3e | 863 | #endif |
b0af6f41 | 864 | |
de190aef | 865 | o->entry_array.items[i] = htole64(p); |
cec736d2 | 866 | |
de190aef | 867 | if (ap == 0) |
7be3aa17 | 868 | *first = htole64(q); |
cec736d2 | 869 | else { |
de190aef | 870 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, ap, &o); |
cec736d2 LP |
871 | if (r < 0) |
872 | return r; | |
873 | ||
de190aef LP |
874 | o->entry_array.next_entry_array_offset = htole64(q); |
875 | } | |
cec736d2 | 876 | |
2dee23eb LP |
877 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
878 | f->header->n_entry_arrays = htole64(le64toh(f->header->n_entry_arrays) + 1); | |
879 | ||
de190aef LP |
880 | *idx = htole64(hidx + 1); |
881 | ||
882 | return 0; | |
883 | } | |
cec736d2 | 884 | |
de190aef | 885 | static int link_entry_into_array_plus_one(JournalFile *f, |
4fd052ae FC |
886 | le64_t *extra, |
887 | le64_t *first, | |
888 | le64_t *idx, | |
de190aef LP |
889 | uint64_t p) { |
890 | ||
891 | int r; | |
892 | ||
893 | assert(f); | |
894 | assert(extra); | |
895 | assert(first); | |
896 | assert(idx); | |
897 | assert(p > 0); | |
898 | ||
899 | if (*idx == 0) | |
900 | *extra = htole64(p); | |
901 | else { | |
4fd052ae | 902 | le64_t i; |
de190aef | 903 | |
7be3aa17 | 904 | i = htole64(le64toh(*idx) - 1); |
de190aef LP |
905 | r = link_entry_into_array(f, first, &i, p); |
906 | if (r < 0) | |
907 | return r; | |
cec736d2 LP |
908 | } |
909 | ||
de190aef LP |
910 | *idx = htole64(le64toh(*idx) + 1); |
911 | return 0; | |
912 | } | |
913 | ||
914 | static int journal_file_link_entry_item(JournalFile *f, Object *o, uint64_t offset, uint64_t i) { | |
915 | uint64_t p; | |
916 | int r; | |
917 | assert(f); | |
918 | assert(o); | |
919 | assert(offset > 0); | |
920 | ||
921 | p = le64toh(o->entry.items[i].object_offset); | |
922 | if (p == 0) | |
923 | return -EINVAL; | |
924 | ||
925 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
cec736d2 LP |
926 | if (r < 0) |
927 | return r; | |
928 | ||
de190aef LP |
929 | return link_entry_into_array_plus_one(f, |
930 | &o->data.entry_offset, | |
931 | &o->data.entry_array_offset, | |
932 | &o->data.n_entries, | |
933 | offset); | |
cec736d2 LP |
934 | } |
935 | ||
936 | static int journal_file_link_entry(JournalFile *f, Object *o, uint64_t offset) { | |
de190aef | 937 | uint64_t n, i; |
cec736d2 LP |
938 | int r; |
939 | ||
940 | assert(f); | |
941 | assert(o); | |
942 | assert(offset > 0); | |
de190aef | 943 | assert(o->object.type == OBJECT_ENTRY); |
cec736d2 | 944 | |
b788cc23 LP |
945 | __sync_synchronize(); |
946 | ||
cec736d2 | 947 | /* Link up the entry itself */ |
de190aef LP |
948 | r = link_entry_into_array(f, |
949 | &f->header->entry_array_offset, | |
950 | &f->header->n_entries, | |
951 | offset); | |
952 | if (r < 0) | |
953 | return r; | |
cec736d2 | 954 | |
aaf53376 | 955 | /* log_debug("=> %s seqnr=%lu n_entries=%lu", f->path, (unsigned long) o->entry.seqnum, (unsigned long) f->header->n_entries); */ |
cec736d2 | 956 | |
de190aef | 957 | if (f->header->head_entry_realtime == 0) |
0ac38b70 | 958 | f->header->head_entry_realtime = o->entry.realtime; |
cec736d2 | 959 | |
0ac38b70 | 960 | f->header->tail_entry_realtime = o->entry.realtime; |
de190aef LP |
961 | f->header->tail_entry_monotonic = o->entry.monotonic; |
962 | ||
963 | f->tail_entry_monotonic_valid = true; | |
cec736d2 LP |
964 | |
965 | /* Link up the items */ | |
966 | n = journal_file_entry_n_items(o); | |
967 | for (i = 0; i < n; i++) { | |
968 | r = journal_file_link_entry_item(f, o, offset, i); | |
969 | if (r < 0) | |
970 | return r; | |
971 | } | |
972 | ||
cec736d2 LP |
973 | return 0; |
974 | } | |
975 | ||
976 | static int journal_file_append_entry_internal( | |
977 | JournalFile *f, | |
978 | const dual_timestamp *ts, | |
979 | uint64_t xor_hash, | |
980 | const EntryItem items[], unsigned n_items, | |
de190aef | 981 | uint64_t *seqnum, |
cec736d2 LP |
982 | Object **ret, uint64_t *offset) { |
983 | uint64_t np; | |
984 | uint64_t osize; | |
985 | Object *o; | |
986 | int r; | |
987 | ||
988 | assert(f); | |
989 | assert(items || n_items == 0); | |
de190aef | 990 | assert(ts); |
cec736d2 LP |
991 | |
992 | osize = offsetof(Object, entry.items) + (n_items * sizeof(EntryItem)); | |
993 | ||
de190aef | 994 | r = journal_file_append_object(f, OBJECT_ENTRY, osize, &o, &np); |
cec736d2 LP |
995 | if (r < 0) |
996 | return r; | |
997 | ||
d98cc1f2 | 998 | o->entry.seqnum = htole64(journal_file_entry_seqnum(f, seqnum)); |
cec736d2 | 999 | memcpy(o->entry.items, items, n_items * sizeof(EntryItem)); |
de190aef LP |
1000 | o->entry.realtime = htole64(ts->realtime); |
1001 | o->entry.monotonic = htole64(ts->monotonic); | |
cec736d2 LP |
1002 | o->entry.xor_hash = htole64(xor_hash); |
1003 | o->entry.boot_id = f->header->boot_id; | |
1004 | ||
feb12d3e | 1005 | #ifdef HAVE_GCRYPT |
b0af6f41 LP |
1006 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY, np); |
1007 | if (r < 0) | |
1008 | return r; | |
feb12d3e | 1009 | #endif |
b0af6f41 | 1010 | |
cec736d2 LP |
1011 | r = journal_file_link_entry(f, o, np); |
1012 | if (r < 0) | |
1013 | return r; | |
1014 | ||
1015 | if (ret) | |
1016 | *ret = o; | |
1017 | ||
1018 | if (offset) | |
1019 | *offset = np; | |
1020 | ||
1021 | return 0; | |
1022 | } | |
1023 | ||
cf244689 | 1024 | void journal_file_post_change(JournalFile *f) { |
50f20cfd LP |
1025 | assert(f); |
1026 | ||
1027 | /* inotify() does not receive IN_MODIFY events from file | |
1028 | * accesses done via mmap(). After each access we hence | |
1029 | * trigger IN_MODIFY by truncating the journal file to its | |
1030 | * current size which triggers IN_MODIFY. */ | |
1031 | ||
bc85bfee LP |
1032 | __sync_synchronize(); |
1033 | ||
50f20cfd LP |
1034 | if (ftruncate(f->fd, f->last_stat.st_size) < 0) |
1035 | log_error("Failed to to truncate file to its own size: %m"); | |
1036 | } | |
1037 | ||
de190aef | 1038 | 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 |
1039 | unsigned i; |
1040 | EntryItem *items; | |
1041 | int r; | |
1042 | uint64_t xor_hash = 0; | |
de190aef | 1043 | struct dual_timestamp _ts; |
cec736d2 LP |
1044 | |
1045 | assert(f); | |
1046 | assert(iovec || n_iovec == 0); | |
1047 | ||
de190aef LP |
1048 | if (!f->writable) |
1049 | return -EPERM; | |
1050 | ||
1051 | if (!ts) { | |
1052 | dual_timestamp_get(&_ts); | |
1053 | ts = &_ts; | |
1054 | } | |
1055 | ||
1056 | if (f->tail_entry_monotonic_valid && | |
1057 | ts->monotonic < le64toh(f->header->tail_entry_monotonic)) | |
1058 | return -EINVAL; | |
1059 | ||
feb12d3e | 1060 | #ifdef HAVE_GCRYPT |
7560fffc LP |
1061 | r = journal_file_maybe_append_tag(f, ts->realtime); |
1062 | if (r < 0) | |
1063 | return r; | |
feb12d3e | 1064 | #endif |
7560fffc | 1065 | |
64825d3c LP |
1066 | /* alloca() can't take 0, hence let's allocate at least one */ |
1067 | items = alloca(sizeof(EntryItem) * MAX(1, n_iovec)); | |
cec736d2 LP |
1068 | |
1069 | for (i = 0; i < n_iovec; i++) { | |
1070 | uint64_t p; | |
1071 | Object *o; | |
1072 | ||
1073 | r = journal_file_append_data(f, iovec[i].iov_base, iovec[i].iov_len, &o, &p); | |
1074 | if (r < 0) | |
cf244689 | 1075 | return r; |
cec736d2 LP |
1076 | |
1077 | xor_hash ^= le64toh(o->data.hash); | |
1078 | items[i].object_offset = htole64(p); | |
de7b95cd | 1079 | items[i].hash = o->data.hash; |
cec736d2 LP |
1080 | } |
1081 | ||
de190aef | 1082 | r = journal_file_append_entry_internal(f, ts, xor_hash, items, n_iovec, seqnum, ret, offset); |
cec736d2 | 1083 | |
50f20cfd LP |
1084 | journal_file_post_change(f); |
1085 | ||
cec736d2 LP |
1086 | return r; |
1087 | } | |
1088 | ||
de190aef LP |
1089 | static int generic_array_get(JournalFile *f, |
1090 | uint64_t first, | |
1091 | uint64_t i, | |
1092 | Object **ret, uint64_t *offset) { | |
1093 | ||
cec736d2 | 1094 | Object *o; |
6c8a39b8 | 1095 | uint64_t p = 0, a; |
cec736d2 LP |
1096 | int r; |
1097 | ||
1098 | assert(f); | |
1099 | ||
de190aef LP |
1100 | a = first; |
1101 | while (a > 0) { | |
1102 | uint64_t n; | |
cec736d2 | 1103 | |
de190aef LP |
1104 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); |
1105 | if (r < 0) | |
1106 | return r; | |
cec736d2 | 1107 | |
de190aef LP |
1108 | n = journal_file_entry_array_n_items(o); |
1109 | if (i < n) { | |
1110 | p = le64toh(o->entry_array.items[i]); | |
1111 | break; | |
cec736d2 LP |
1112 | } |
1113 | ||
de190aef LP |
1114 | i -= n; |
1115 | a = le64toh(o->entry_array.next_entry_array_offset); | |
1116 | } | |
1117 | ||
1118 | if (a <= 0 || p <= 0) | |
1119 | return 0; | |
1120 | ||
1121 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1122 | if (r < 0) | |
1123 | return r; | |
1124 | ||
1125 | if (ret) | |
1126 | *ret = o; | |
1127 | ||
1128 | if (offset) | |
1129 | *offset = p; | |
1130 | ||
1131 | return 1; | |
1132 | } | |
1133 | ||
1134 | static int generic_array_get_plus_one(JournalFile *f, | |
1135 | uint64_t extra, | |
1136 | uint64_t first, | |
1137 | uint64_t i, | |
1138 | Object **ret, uint64_t *offset) { | |
1139 | ||
1140 | Object *o; | |
1141 | ||
1142 | assert(f); | |
1143 | ||
1144 | if (i == 0) { | |
1145 | int r; | |
1146 | ||
1147 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
cec736d2 LP |
1148 | if (r < 0) |
1149 | return r; | |
1150 | ||
de190aef LP |
1151 | if (ret) |
1152 | *ret = o; | |
cec736d2 | 1153 | |
de190aef LP |
1154 | if (offset) |
1155 | *offset = extra; | |
cec736d2 | 1156 | |
de190aef | 1157 | return 1; |
cec736d2 LP |
1158 | } |
1159 | ||
de190aef LP |
1160 | return generic_array_get(f, first, i-1, ret, offset); |
1161 | } | |
cec736d2 | 1162 | |
de190aef LP |
1163 | enum { |
1164 | TEST_FOUND, | |
1165 | TEST_LEFT, | |
1166 | TEST_RIGHT | |
1167 | }; | |
cec736d2 | 1168 | |
de190aef LP |
1169 | static int generic_array_bisect(JournalFile *f, |
1170 | uint64_t first, | |
1171 | uint64_t n, | |
1172 | uint64_t needle, | |
1173 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1174 | direction_t direction, | |
1175 | Object **ret, | |
1176 | uint64_t *offset, | |
1177 | uint64_t *idx) { | |
1178 | ||
1179 | uint64_t a, p, t = 0, i = 0, last_p = 0; | |
1180 | bool subtract_one = false; | |
1181 | Object *o, *array = NULL; | |
1182 | int r; | |
cec736d2 | 1183 | |
de190aef LP |
1184 | assert(f); |
1185 | assert(test_object); | |
cec736d2 | 1186 | |
de190aef LP |
1187 | a = first; |
1188 | while (a > 0) { | |
1189 | uint64_t left, right, k, lp; | |
1190 | ||
1191 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &array); | |
cec736d2 LP |
1192 | if (r < 0) |
1193 | return r; | |
1194 | ||
de190aef LP |
1195 | k = journal_file_entry_array_n_items(array); |
1196 | right = MIN(k, n); | |
1197 | if (right <= 0) | |
1198 | return 0; | |
cec736d2 | 1199 | |
de190aef LP |
1200 | i = right - 1; |
1201 | lp = p = le64toh(array->entry_array.items[i]); | |
1202 | if (p <= 0) | |
1203 | return -EBADMSG; | |
cec736d2 | 1204 | |
de190aef LP |
1205 | r = test_object(f, p, needle); |
1206 | if (r < 0) | |
1207 | return r; | |
cec736d2 | 1208 | |
de190aef LP |
1209 | if (r == TEST_FOUND) |
1210 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1211 | ||
1212 | if (r == TEST_RIGHT) { | |
1213 | left = 0; | |
1214 | right -= 1; | |
1215 | for (;;) { | |
1216 | if (left == right) { | |
1217 | if (direction == DIRECTION_UP) | |
1218 | subtract_one = true; | |
1219 | ||
1220 | i = left; | |
1221 | goto found; | |
1222 | } | |
1223 | ||
1224 | assert(left < right); | |
1225 | ||
1226 | i = (left + right) / 2; | |
1227 | p = le64toh(array->entry_array.items[i]); | |
1228 | if (p <= 0) | |
1229 | return -EBADMSG; | |
1230 | ||
1231 | r = test_object(f, p, needle); | |
1232 | if (r < 0) | |
1233 | return r; | |
cec736d2 | 1234 | |
de190aef LP |
1235 | if (r == TEST_FOUND) |
1236 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1237 | ||
1238 | if (r == TEST_RIGHT) | |
1239 | right = i; | |
1240 | else | |
1241 | left = i + 1; | |
1242 | } | |
1243 | } | |
1244 | ||
cbdca852 LP |
1245 | if (k > n) { |
1246 | if (direction == DIRECTION_UP) { | |
1247 | i = n; | |
1248 | subtract_one = true; | |
1249 | goto found; | |
1250 | } | |
1251 | ||
cec736d2 | 1252 | return 0; |
cbdca852 | 1253 | } |
cec736d2 | 1254 | |
de190aef LP |
1255 | last_p = lp; |
1256 | ||
1257 | n -= k; | |
1258 | t += k; | |
1259 | a = le64toh(array->entry_array.next_entry_array_offset); | |
cec736d2 LP |
1260 | } |
1261 | ||
1262 | return 0; | |
de190aef LP |
1263 | |
1264 | found: | |
1265 | if (subtract_one && t == 0 && i == 0) | |
1266 | return 0; | |
1267 | ||
1268 | if (subtract_one && i == 0) | |
1269 | p = last_p; | |
1270 | else if (subtract_one) | |
1271 | p = le64toh(array->entry_array.items[i-1]); | |
1272 | else | |
1273 | p = le64toh(array->entry_array.items[i]); | |
1274 | ||
1275 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1276 | if (r < 0) | |
1277 | return r; | |
1278 | ||
1279 | if (ret) | |
1280 | *ret = o; | |
1281 | ||
1282 | if (offset) | |
1283 | *offset = p; | |
1284 | ||
1285 | if (idx) | |
cbdca852 | 1286 | *idx = t + i + (subtract_one ? -1 : 0); |
de190aef LP |
1287 | |
1288 | return 1; | |
cec736d2 LP |
1289 | } |
1290 | ||
de190aef LP |
1291 | static int generic_array_bisect_plus_one(JournalFile *f, |
1292 | uint64_t extra, | |
1293 | uint64_t first, | |
1294 | uint64_t n, | |
1295 | uint64_t needle, | |
1296 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1297 | direction_t direction, | |
1298 | Object **ret, | |
1299 | uint64_t *offset, | |
1300 | uint64_t *idx) { | |
1301 | ||
cec736d2 | 1302 | int r; |
cbdca852 LP |
1303 | bool step_back = false; |
1304 | Object *o; | |
cec736d2 LP |
1305 | |
1306 | assert(f); | |
de190aef | 1307 | assert(test_object); |
cec736d2 | 1308 | |
de190aef LP |
1309 | if (n <= 0) |
1310 | return 0; | |
cec736d2 | 1311 | |
de190aef LP |
1312 | /* This bisects the array in object 'first', but first checks |
1313 | * an extra */ | |
de190aef LP |
1314 | r = test_object(f, extra, needle); |
1315 | if (r < 0) | |
1316 | return r; | |
a536e261 LP |
1317 | |
1318 | if (r == TEST_FOUND) | |
1319 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1320 | ||
cbdca852 LP |
1321 | /* if we are looking with DIRECTION_UP then we need to first |
1322 | see if in the actual array there is a matching entry, and | |
1323 | return the last one of that. But if there isn't any we need | |
1324 | to return this one. Hence remember this, and return it | |
1325 | below. */ | |
1326 | if (r == TEST_LEFT) | |
1327 | step_back = direction == DIRECTION_UP; | |
de190aef | 1328 | |
cbdca852 LP |
1329 | if (r == TEST_RIGHT) { |
1330 | if (direction == DIRECTION_DOWN) | |
1331 | goto found; | |
1332 | else | |
1333 | return 0; | |
a536e261 | 1334 | } |
cec736d2 | 1335 | |
de190aef LP |
1336 | r = generic_array_bisect(f, first, n-1, needle, test_object, direction, ret, offset, idx); |
1337 | ||
cbdca852 LP |
1338 | if (r == 0 && step_back) |
1339 | goto found; | |
1340 | ||
ecf68b1d | 1341 | if (r > 0 && idx) |
de190aef LP |
1342 | (*idx) ++; |
1343 | ||
1344 | return r; | |
cbdca852 LP |
1345 | |
1346 | found: | |
1347 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
1348 | if (r < 0) | |
1349 | return r; | |
1350 | ||
1351 | if (ret) | |
1352 | *ret = o; | |
1353 | ||
1354 | if (offset) | |
1355 | *offset = extra; | |
1356 | ||
1357 | if (idx) | |
1358 | *idx = 0; | |
1359 | ||
1360 | return 1; | |
1361 | } | |
1362 | ||
1363 | static int test_object_offset(JournalFile *f, uint64_t p, uint64_t needle) { | |
1364 | assert(f); | |
1365 | assert(p > 0); | |
1366 | ||
1367 | if (p == needle) | |
1368 | return TEST_FOUND; | |
1369 | else if (p < needle) | |
1370 | return TEST_LEFT; | |
1371 | else | |
1372 | return TEST_RIGHT; | |
1373 | } | |
1374 | ||
1375 | int journal_file_move_to_entry_by_offset( | |
1376 | JournalFile *f, | |
1377 | uint64_t p, | |
1378 | direction_t direction, | |
1379 | Object **ret, | |
1380 | uint64_t *offset) { | |
1381 | ||
1382 | return generic_array_bisect(f, | |
1383 | le64toh(f->header->entry_array_offset), | |
1384 | le64toh(f->header->n_entries), | |
1385 | p, | |
1386 | test_object_offset, | |
1387 | direction, | |
1388 | ret, offset, NULL); | |
de190aef LP |
1389 | } |
1390 | ||
cbdca852 | 1391 | |
de190aef LP |
1392 | static int test_object_seqnum(JournalFile *f, uint64_t p, uint64_t needle) { |
1393 | Object *o; | |
1394 | int r; | |
1395 | ||
1396 | assert(f); | |
1397 | assert(p > 0); | |
1398 | ||
1399 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
cec736d2 LP |
1400 | if (r < 0) |
1401 | return r; | |
1402 | ||
de190aef LP |
1403 | if (le64toh(o->entry.seqnum) == needle) |
1404 | return TEST_FOUND; | |
1405 | else if (le64toh(o->entry.seqnum) < needle) | |
1406 | return TEST_LEFT; | |
1407 | else | |
1408 | return TEST_RIGHT; | |
1409 | } | |
cec736d2 | 1410 | |
de190aef LP |
1411 | int journal_file_move_to_entry_by_seqnum( |
1412 | JournalFile *f, | |
1413 | uint64_t seqnum, | |
1414 | direction_t direction, | |
1415 | Object **ret, | |
1416 | uint64_t *offset) { | |
1417 | ||
1418 | return generic_array_bisect(f, | |
1419 | le64toh(f->header->entry_array_offset), | |
1420 | le64toh(f->header->n_entries), | |
1421 | seqnum, | |
1422 | test_object_seqnum, | |
1423 | direction, | |
1424 | ret, offset, NULL); | |
1425 | } | |
cec736d2 | 1426 | |
de190aef LP |
1427 | static int test_object_realtime(JournalFile *f, uint64_t p, uint64_t needle) { |
1428 | Object *o; | |
1429 | int r; | |
1430 | ||
1431 | assert(f); | |
1432 | assert(p > 0); | |
1433 | ||
1434 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1435 | if (r < 0) | |
1436 | return r; | |
1437 | ||
1438 | if (le64toh(o->entry.realtime) == needle) | |
1439 | return TEST_FOUND; | |
1440 | else if (le64toh(o->entry.realtime) < needle) | |
1441 | return TEST_LEFT; | |
1442 | else | |
1443 | return TEST_RIGHT; | |
cec736d2 LP |
1444 | } |
1445 | ||
de190aef LP |
1446 | int journal_file_move_to_entry_by_realtime( |
1447 | JournalFile *f, | |
1448 | uint64_t realtime, | |
1449 | direction_t direction, | |
1450 | Object **ret, | |
1451 | uint64_t *offset) { | |
1452 | ||
1453 | return generic_array_bisect(f, | |
1454 | le64toh(f->header->entry_array_offset), | |
1455 | le64toh(f->header->n_entries), | |
1456 | realtime, | |
1457 | test_object_realtime, | |
1458 | direction, | |
1459 | ret, offset, NULL); | |
1460 | } | |
1461 | ||
1462 | static int test_object_monotonic(JournalFile *f, uint64_t p, uint64_t needle) { | |
1463 | Object *o; | |
1464 | int r; | |
1465 | ||
1466 | assert(f); | |
1467 | assert(p > 0); | |
1468 | ||
1469 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1470 | if (r < 0) | |
1471 | return r; | |
1472 | ||
1473 | if (le64toh(o->entry.monotonic) == needle) | |
1474 | return TEST_FOUND; | |
1475 | else if (le64toh(o->entry.monotonic) < needle) | |
1476 | return TEST_LEFT; | |
1477 | else | |
1478 | return TEST_RIGHT; | |
1479 | } | |
1480 | ||
1481 | int journal_file_move_to_entry_by_monotonic( | |
1482 | JournalFile *f, | |
1483 | sd_id128_t boot_id, | |
1484 | uint64_t monotonic, | |
1485 | direction_t direction, | |
1486 | Object **ret, | |
1487 | uint64_t *offset) { | |
1488 | ||
10b6f904 | 1489 | char t[9+32+1] = "_BOOT_ID="; |
de190aef LP |
1490 | Object *o; |
1491 | int r; | |
1492 | ||
cbdca852 | 1493 | assert(f); |
de190aef | 1494 | |
cbdca852 | 1495 | sd_id128_to_string(boot_id, t + 9); |
de190aef LP |
1496 | r = journal_file_find_data_object(f, t, strlen(t), &o, NULL); |
1497 | if (r < 0) | |
1498 | return r; | |
cbdca852 | 1499 | if (r == 0) |
de190aef LP |
1500 | return -ENOENT; |
1501 | ||
1502 | return generic_array_bisect_plus_one(f, | |
1503 | le64toh(o->data.entry_offset), | |
1504 | le64toh(o->data.entry_array_offset), | |
1505 | le64toh(o->data.n_entries), | |
1506 | monotonic, | |
1507 | test_object_monotonic, | |
1508 | direction, | |
1509 | ret, offset, NULL); | |
1510 | } | |
1511 | ||
de190aef LP |
1512 | int journal_file_next_entry( |
1513 | JournalFile *f, | |
1514 | Object *o, uint64_t p, | |
1515 | direction_t direction, | |
1516 | Object **ret, uint64_t *offset) { | |
1517 | ||
1518 | uint64_t i, n; | |
cec736d2 LP |
1519 | int r; |
1520 | ||
1521 | assert(f); | |
de190aef LP |
1522 | assert(p > 0 || !o); |
1523 | ||
1524 | n = le64toh(f->header->n_entries); | |
1525 | if (n <= 0) | |
1526 | return 0; | |
cec736d2 LP |
1527 | |
1528 | if (!o) | |
de190aef | 1529 | i = direction == DIRECTION_DOWN ? 0 : n - 1; |
cec736d2 | 1530 | else { |
de190aef | 1531 | if (o->object.type != OBJECT_ENTRY) |
cec736d2 LP |
1532 | return -EINVAL; |
1533 | ||
de190aef LP |
1534 | r = generic_array_bisect(f, |
1535 | le64toh(f->header->entry_array_offset), | |
1536 | le64toh(f->header->n_entries), | |
1537 | p, | |
1538 | test_object_offset, | |
1539 | DIRECTION_DOWN, | |
1540 | NULL, NULL, | |
1541 | &i); | |
1542 | if (r <= 0) | |
1543 | return r; | |
1544 | ||
1545 | if (direction == DIRECTION_DOWN) { | |
1546 | if (i >= n - 1) | |
1547 | return 0; | |
1548 | ||
1549 | i++; | |
1550 | } else { | |
1551 | if (i <= 0) | |
1552 | return 0; | |
1553 | ||
1554 | i--; | |
1555 | } | |
cec736d2 LP |
1556 | } |
1557 | ||
de190aef LP |
1558 | /* And jump to it */ |
1559 | return generic_array_get(f, | |
1560 | le64toh(f->header->entry_array_offset), | |
1561 | i, | |
1562 | ret, offset); | |
1563 | } | |
cec736d2 | 1564 | |
de190aef LP |
1565 | int journal_file_skip_entry( |
1566 | JournalFile *f, | |
1567 | Object *o, uint64_t p, | |
1568 | int64_t skip, | |
1569 | Object **ret, uint64_t *offset) { | |
1570 | ||
1571 | uint64_t i, n; | |
1572 | int r; | |
1573 | ||
1574 | assert(f); | |
1575 | assert(o); | |
1576 | assert(p > 0); | |
1577 | ||
1578 | if (o->object.type != OBJECT_ENTRY) | |
1579 | return -EINVAL; | |
1580 | ||
1581 | r = generic_array_bisect(f, | |
1582 | le64toh(f->header->entry_array_offset), | |
1583 | le64toh(f->header->n_entries), | |
1584 | p, | |
1585 | test_object_offset, | |
1586 | DIRECTION_DOWN, | |
1587 | NULL, NULL, | |
1588 | &i); | |
1589 | if (r <= 0) | |
cec736d2 LP |
1590 | return r; |
1591 | ||
de190aef LP |
1592 | /* Calculate new index */ |
1593 | if (skip < 0) { | |
1594 | if ((uint64_t) -skip >= i) | |
1595 | i = 0; | |
1596 | else | |
1597 | i = i - (uint64_t) -skip; | |
1598 | } else | |
1599 | i += (uint64_t) skip; | |
cec736d2 | 1600 | |
de190aef LP |
1601 | n = le64toh(f->header->n_entries); |
1602 | if (n <= 0) | |
1603 | return -EBADMSG; | |
cec736d2 | 1604 | |
de190aef LP |
1605 | if (i >= n) |
1606 | i = n-1; | |
1607 | ||
1608 | return generic_array_get(f, | |
1609 | le64toh(f->header->entry_array_offset), | |
1610 | i, | |
1611 | ret, offset); | |
cec736d2 LP |
1612 | } |
1613 | ||
de190aef LP |
1614 | int journal_file_next_entry_for_data( |
1615 | JournalFile *f, | |
1616 | Object *o, uint64_t p, | |
1617 | uint64_t data_offset, | |
1618 | direction_t direction, | |
1619 | Object **ret, uint64_t *offset) { | |
1620 | ||
1621 | uint64_t n, i; | |
cec736d2 | 1622 | int r; |
de190aef | 1623 | Object *d; |
cec736d2 LP |
1624 | |
1625 | assert(f); | |
de190aef | 1626 | assert(p > 0 || !o); |
cec736d2 | 1627 | |
de190aef | 1628 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
466ccd92 | 1629 | if (r < 0) |
de190aef | 1630 | return r; |
cec736d2 | 1631 | |
de190aef LP |
1632 | n = le64toh(d->data.n_entries); |
1633 | if (n <= 0) | |
1634 | return n; | |
cec736d2 | 1635 | |
de190aef LP |
1636 | if (!o) |
1637 | i = direction == DIRECTION_DOWN ? 0 : n - 1; | |
1638 | else { | |
1639 | if (o->object.type != OBJECT_ENTRY) | |
1640 | return -EINVAL; | |
cec736d2 | 1641 | |
de190aef LP |
1642 | r = generic_array_bisect_plus_one(f, |
1643 | le64toh(d->data.entry_offset), | |
1644 | le64toh(d->data.entry_array_offset), | |
1645 | le64toh(d->data.n_entries), | |
1646 | p, | |
1647 | test_object_offset, | |
1648 | DIRECTION_DOWN, | |
1649 | NULL, NULL, | |
1650 | &i); | |
1651 | ||
1652 | if (r <= 0) | |
cec736d2 LP |
1653 | return r; |
1654 | ||
de190aef LP |
1655 | if (direction == DIRECTION_DOWN) { |
1656 | if (i >= n - 1) | |
1657 | return 0; | |
cec736d2 | 1658 | |
de190aef LP |
1659 | i++; |
1660 | } else { | |
1661 | if (i <= 0) | |
1662 | return 0; | |
cec736d2 | 1663 | |
de190aef LP |
1664 | i--; |
1665 | } | |
cec736d2 | 1666 | |
de190aef | 1667 | } |
cec736d2 | 1668 | |
de190aef LP |
1669 | return generic_array_get_plus_one(f, |
1670 | le64toh(d->data.entry_offset), | |
1671 | le64toh(d->data.entry_array_offset), | |
1672 | i, | |
1673 | ret, offset); | |
1674 | } | |
cec736d2 | 1675 | |
cbdca852 LP |
1676 | int journal_file_move_to_entry_by_offset_for_data( |
1677 | JournalFile *f, | |
1678 | uint64_t data_offset, | |
1679 | uint64_t p, | |
1680 | direction_t direction, | |
1681 | Object **ret, uint64_t *offset) { | |
1682 | ||
1683 | int r; | |
1684 | Object *d; | |
1685 | ||
1686 | assert(f); | |
1687 | ||
1688 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1689 | if (r < 0) | |
1690 | return r; | |
1691 | ||
1692 | return generic_array_bisect_plus_one(f, | |
1693 | le64toh(d->data.entry_offset), | |
1694 | le64toh(d->data.entry_array_offset), | |
1695 | le64toh(d->data.n_entries), | |
1696 | p, | |
1697 | test_object_offset, | |
1698 | direction, | |
1699 | ret, offset, NULL); | |
1700 | } | |
1701 | ||
1702 | int journal_file_move_to_entry_by_monotonic_for_data( | |
1703 | JournalFile *f, | |
1704 | uint64_t data_offset, | |
1705 | sd_id128_t boot_id, | |
1706 | uint64_t monotonic, | |
1707 | direction_t direction, | |
1708 | Object **ret, uint64_t *offset) { | |
1709 | ||
1710 | char t[9+32+1] = "_BOOT_ID="; | |
1711 | Object *o, *d; | |
1712 | int r; | |
1713 | uint64_t b, z; | |
1714 | ||
1715 | assert(f); | |
1716 | ||
1717 | /* First, seek by time */ | |
1718 | sd_id128_to_string(boot_id, t + 9); | |
1719 | r = journal_file_find_data_object(f, t, strlen(t), &o, &b); | |
1720 | if (r < 0) | |
1721 | return r; | |
1722 | if (r == 0) | |
1723 | return -ENOENT; | |
1724 | ||
1725 | r = generic_array_bisect_plus_one(f, | |
1726 | le64toh(o->data.entry_offset), | |
1727 | le64toh(o->data.entry_array_offset), | |
1728 | le64toh(o->data.n_entries), | |
1729 | monotonic, | |
1730 | test_object_monotonic, | |
1731 | direction, | |
1732 | NULL, &z, NULL); | |
1733 | if (r <= 0) | |
1734 | return r; | |
1735 | ||
1736 | /* And now, continue seeking until we find an entry that | |
1737 | * exists in both bisection arrays */ | |
1738 | ||
1739 | for (;;) { | |
1740 | Object *qo; | |
1741 | uint64_t p, q; | |
1742 | ||
1743 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1744 | if (r < 0) | |
1745 | return r; | |
1746 | ||
1747 | r = generic_array_bisect_plus_one(f, | |
1748 | le64toh(d->data.entry_offset), | |
1749 | le64toh(d->data.entry_array_offset), | |
1750 | le64toh(d->data.n_entries), | |
1751 | z, | |
1752 | test_object_offset, | |
1753 | direction, | |
1754 | NULL, &p, NULL); | |
1755 | if (r <= 0) | |
1756 | return r; | |
1757 | ||
1758 | r = journal_file_move_to_object(f, OBJECT_DATA, b, &o); | |
1759 | if (r < 0) | |
1760 | return r; | |
1761 | ||
1762 | r = generic_array_bisect_plus_one(f, | |
1763 | le64toh(o->data.entry_offset), | |
1764 | le64toh(o->data.entry_array_offset), | |
1765 | le64toh(o->data.n_entries), | |
1766 | p, | |
1767 | test_object_offset, | |
1768 | direction, | |
1769 | &qo, &q, NULL); | |
1770 | ||
1771 | if (r <= 0) | |
1772 | return r; | |
1773 | ||
1774 | if (p == q) { | |
1775 | if (ret) | |
1776 | *ret = qo; | |
1777 | if (offset) | |
1778 | *offset = q; | |
1779 | ||
1780 | return 1; | |
1781 | } | |
1782 | ||
1783 | z = q; | |
1784 | } | |
1785 | ||
1786 | return 0; | |
1787 | } | |
1788 | ||
de190aef LP |
1789 | int journal_file_move_to_entry_by_seqnum_for_data( |
1790 | JournalFile *f, | |
1791 | uint64_t data_offset, | |
1792 | uint64_t seqnum, | |
1793 | direction_t direction, | |
1794 | Object **ret, uint64_t *offset) { | |
cec736d2 | 1795 | |
de190aef LP |
1796 | Object *d; |
1797 | int r; | |
cec736d2 | 1798 | |
91a31dde LP |
1799 | assert(f); |
1800 | ||
de190aef | 1801 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 1802 | if (r < 0) |
de190aef | 1803 | return r; |
cec736d2 | 1804 | |
de190aef LP |
1805 | return generic_array_bisect_plus_one(f, |
1806 | le64toh(d->data.entry_offset), | |
1807 | le64toh(d->data.entry_array_offset), | |
1808 | le64toh(d->data.n_entries), | |
1809 | seqnum, | |
1810 | test_object_seqnum, | |
1811 | direction, | |
1812 | ret, offset, NULL); | |
1813 | } | |
cec736d2 | 1814 | |
de190aef LP |
1815 | int journal_file_move_to_entry_by_realtime_for_data( |
1816 | JournalFile *f, | |
1817 | uint64_t data_offset, | |
1818 | uint64_t realtime, | |
1819 | direction_t direction, | |
1820 | Object **ret, uint64_t *offset) { | |
1821 | ||
1822 | Object *d; | |
1823 | int r; | |
1824 | ||
91a31dde LP |
1825 | assert(f); |
1826 | ||
de190aef | 1827 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 1828 | if (r < 0) |
de190aef LP |
1829 | return r; |
1830 | ||
1831 | return generic_array_bisect_plus_one(f, | |
1832 | le64toh(d->data.entry_offset), | |
1833 | le64toh(d->data.entry_array_offset), | |
1834 | le64toh(d->data.n_entries), | |
1835 | realtime, | |
1836 | test_object_realtime, | |
1837 | direction, | |
1838 | ret, offset, NULL); | |
cec736d2 LP |
1839 | } |
1840 | ||
0284adc6 | 1841 | void journal_file_dump(JournalFile *f) { |
7560fffc | 1842 | Object *o; |
7560fffc | 1843 | int r; |
0284adc6 | 1844 | uint64_t p; |
7560fffc LP |
1845 | |
1846 | assert(f); | |
1847 | ||
0284adc6 | 1848 | journal_file_print_header(f); |
7560fffc | 1849 | |
0284adc6 LP |
1850 | p = le64toh(f->header->header_size); |
1851 | while (p != 0) { | |
1852 | r = journal_file_move_to_object(f, -1, p, &o); | |
1853 | if (r < 0) | |
1854 | goto fail; | |
7560fffc | 1855 | |
0284adc6 | 1856 | switch (o->object.type) { |
d98cc1f2 | 1857 | |
0284adc6 LP |
1858 | case OBJECT_UNUSED: |
1859 | printf("Type: OBJECT_UNUSED\n"); | |
1860 | break; | |
d98cc1f2 | 1861 | |
0284adc6 LP |
1862 | case OBJECT_DATA: |
1863 | printf("Type: OBJECT_DATA\n"); | |
1864 | break; | |
7560fffc | 1865 | |
0284adc6 | 1866 | case OBJECT_ENTRY: |
f7fab8a5 | 1867 | printf("Type: OBJECT_ENTRY seqnum=%llu monotonic=%llu realtime=%llu\n", |
0284adc6 LP |
1868 | (unsigned long long) le64toh(o->entry.seqnum), |
1869 | (unsigned long long) le64toh(o->entry.monotonic), | |
1870 | (unsigned long long) le64toh(o->entry.realtime)); | |
1871 | break; | |
7560fffc | 1872 | |
0284adc6 LP |
1873 | case OBJECT_FIELD_HASH_TABLE: |
1874 | printf("Type: OBJECT_FIELD_HASH_TABLE\n"); | |
1875 | break; | |
7560fffc | 1876 | |
0284adc6 LP |
1877 | case OBJECT_DATA_HASH_TABLE: |
1878 | printf("Type: OBJECT_DATA_HASH_TABLE\n"); | |
1879 | break; | |
7560fffc | 1880 | |
0284adc6 LP |
1881 | case OBJECT_ENTRY_ARRAY: |
1882 | printf("Type: OBJECT_ENTRY_ARRAY\n"); | |
1883 | break; | |
7560fffc | 1884 | |
0284adc6 | 1885 | case OBJECT_TAG: |
f7fab8a5 LP |
1886 | printf("Type: OBJECT_TAG seqnum=%llu epoch=%llu\n", |
1887 | (unsigned long long) le64toh(o->tag.seqnum), | |
1888 | (unsigned long long) le64toh(o->tag.epoch)); | |
0284adc6 LP |
1889 | break; |
1890 | } | |
7560fffc | 1891 | |
0284adc6 LP |
1892 | if (o->object.flags & OBJECT_COMPRESSED) |
1893 | printf("Flags: COMPRESSED\n"); | |
7560fffc | 1894 | |
0284adc6 LP |
1895 | if (p == le64toh(f->header->tail_object_offset)) |
1896 | p = 0; | |
1897 | else | |
1898 | p = p + ALIGN64(le64toh(o->object.size)); | |
1899 | } | |
7560fffc | 1900 | |
0284adc6 LP |
1901 | return; |
1902 | fail: | |
1903 | log_error("File corrupt"); | |
7560fffc LP |
1904 | } |
1905 | ||
0284adc6 LP |
1906 | void journal_file_print_header(JournalFile *f) { |
1907 | char a[33], b[33], c[33]; | |
1908 | char x[FORMAT_TIMESTAMP_MAX], y[FORMAT_TIMESTAMP_MAX]; | |
a1a03e30 LP |
1909 | struct stat st; |
1910 | char bytes[FORMAT_BYTES_MAX]; | |
7560fffc LP |
1911 | |
1912 | assert(f); | |
7560fffc | 1913 | |
0284adc6 LP |
1914 | printf("File Path: %s\n" |
1915 | "File ID: %s\n" | |
1916 | "Machine ID: %s\n" | |
1917 | "Boot ID: %s\n" | |
1918 | "Sequential Number ID: %s\n" | |
1919 | "State: %s\n" | |
1920 | "Compatible Flags:%s%s\n" | |
1921 | "Incompatible Flags:%s%s\n" | |
1922 | "Header size: %llu\n" | |
1923 | "Arena size: %llu\n" | |
1924 | "Data Hash Table Size: %llu\n" | |
1925 | "Field Hash Table Size: %llu\n" | |
0284adc6 LP |
1926 | "Rotate Suggested: %s\n" |
1927 | "Head Sequential Number: %llu\n" | |
1928 | "Tail Sequential Number: %llu\n" | |
1929 | "Head Realtime Timestamp: %s\n" | |
3223f44f LP |
1930 | "Tail Realtime Timestamp: %s\n" |
1931 | "Objects: %llu\n" | |
1932 | "Entry Objects: %llu\n", | |
0284adc6 LP |
1933 | f->path, |
1934 | sd_id128_to_string(f->header->file_id, a), | |
1935 | sd_id128_to_string(f->header->machine_id, b), | |
1936 | sd_id128_to_string(f->header->boot_id, c), | |
1937 | sd_id128_to_string(f->header->seqnum_id, c), | |
3223f44f LP |
1938 | f->header->state == STATE_OFFLINE ? "OFFLINE" : |
1939 | f->header->state == STATE_ONLINE ? "ONLINE" : | |
1940 | f->header->state == STATE_ARCHIVED ? "ARCHIVED" : "UNKNOWN", | |
8088cbd3 LP |
1941 | JOURNAL_HEADER_SEALED(f->header) ? " SEALED" : "", |
1942 | (le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) ? " ???" : "", | |
1943 | JOURNAL_HEADER_COMPRESSED(f->header) ? " COMPRESSED" : "", | |
1944 | (le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) ? " ???" : "", | |
0284adc6 LP |
1945 | (unsigned long long) le64toh(f->header->header_size), |
1946 | (unsigned long long) le64toh(f->header->arena_size), | |
1947 | (unsigned long long) le64toh(f->header->data_hash_table_size) / sizeof(HashItem), | |
1948 | (unsigned long long) le64toh(f->header->field_hash_table_size) / sizeof(HashItem), | |
0284adc6 LP |
1949 | yes_no(journal_file_rotate_suggested(f)), |
1950 | (unsigned long long) le64toh(f->header->head_entry_seqnum), | |
1951 | (unsigned long long) le64toh(f->header->tail_entry_seqnum), | |
1952 | format_timestamp(x, sizeof(x), le64toh(f->header->head_entry_realtime)), | |
3223f44f LP |
1953 | format_timestamp(y, sizeof(y), le64toh(f->header->tail_entry_realtime)), |
1954 | (unsigned long long) le64toh(f->header->n_objects), | |
1955 | (unsigned long long) le64toh(f->header->n_entries)); | |
7560fffc | 1956 | |
0284adc6 LP |
1957 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
1958 | printf("Data Objects: %llu\n" | |
1959 | "Data Hash Table Fill: %.1f%%\n", | |
1960 | (unsigned long long) le64toh(f->header->n_data), | |
1961 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)))); | |
7560fffc | 1962 | |
0284adc6 LP |
1963 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) |
1964 | printf("Field Objects: %llu\n" | |
1965 | "Field Hash Table Fill: %.1f%%\n", | |
1966 | (unsigned long long) le64toh(f->header->n_fields), | |
1967 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)))); | |
3223f44f LP |
1968 | |
1969 | if (JOURNAL_HEADER_CONTAINS(f->header, n_tags)) | |
1970 | printf("Tag Objects: %llu\n", | |
1971 | (unsigned long long) le64toh(f->header->n_tags)); | |
1972 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) | |
1973 | printf("Entry Array Objects: %llu\n", | |
1974 | (unsigned long long) le64toh(f->header->n_entry_arrays)); | |
a1a03e30 LP |
1975 | |
1976 | if (fstat(f->fd, &st) >= 0) | |
1977 | printf("Disk usage: %s\n", format_bytes(bytes, sizeof(bytes), (off_t) st.st_blocks * 512ULL)); | |
7560fffc LP |
1978 | } |
1979 | ||
0284adc6 LP |
1980 | int journal_file_open( |
1981 | const char *fname, | |
1982 | int flags, | |
1983 | mode_t mode, | |
1984 | bool compress, | |
baed47c3 | 1985 | bool seal, |
0284adc6 LP |
1986 | JournalMetrics *metrics, |
1987 | MMapCache *mmap_cache, | |
1988 | JournalFile *template, | |
1989 | JournalFile **ret) { | |
7560fffc | 1990 | |
0284adc6 LP |
1991 | JournalFile *f; |
1992 | int r; | |
1993 | bool newly_created = false; | |
7560fffc | 1994 | |
0284adc6 | 1995 | assert(fname); |
7560fffc | 1996 | |
0284adc6 LP |
1997 | if ((flags & O_ACCMODE) != O_RDONLY && |
1998 | (flags & O_ACCMODE) != O_RDWR) | |
1999 | return -EINVAL; | |
7560fffc | 2000 | |
a0108012 LP |
2001 | if (!endswith(fname, ".journal") && |
2002 | !endswith(fname, ".journal~")) | |
0284adc6 | 2003 | return -EINVAL; |
7560fffc | 2004 | |
0284adc6 LP |
2005 | f = new0(JournalFile, 1); |
2006 | if (!f) | |
2007 | return -ENOMEM; | |
7560fffc | 2008 | |
0284adc6 LP |
2009 | f->fd = -1; |
2010 | f->mode = mode; | |
7560fffc | 2011 | |
0284adc6 LP |
2012 | f->flags = flags; |
2013 | f->prot = prot_from_flags(flags); | |
2014 | f->writable = (flags & O_ACCMODE) != O_RDONLY; | |
2015 | f->compress = compress; | |
baed47c3 | 2016 | f->seal = seal; |
7560fffc | 2017 | |
0284adc6 LP |
2018 | if (mmap_cache) |
2019 | f->mmap = mmap_cache_ref(mmap_cache); | |
2020 | else { | |
84168d80 | 2021 | f->mmap = mmap_cache_new(); |
0284adc6 LP |
2022 | if (!f->mmap) { |
2023 | r = -ENOMEM; | |
2024 | goto fail; | |
2025 | } | |
2026 | } | |
7560fffc | 2027 | |
0284adc6 LP |
2028 | f->path = strdup(fname); |
2029 | if (!f->path) { | |
2030 | r = -ENOMEM; | |
2031 | goto fail; | |
2032 | } | |
7560fffc | 2033 | |
0284adc6 LP |
2034 | f->fd = open(f->path, f->flags|O_CLOEXEC, f->mode); |
2035 | if (f->fd < 0) { | |
2036 | r = -errno; | |
2037 | goto fail; | |
7560fffc | 2038 | } |
7560fffc | 2039 | |
0284adc6 LP |
2040 | if (fstat(f->fd, &f->last_stat) < 0) { |
2041 | r = -errno; | |
2042 | goto fail; | |
2043 | } | |
7560fffc | 2044 | |
0284adc6 LP |
2045 | if (f->last_stat.st_size == 0 && f->writable) { |
2046 | newly_created = true; | |
7560fffc | 2047 | |
feb12d3e | 2048 | #ifdef HAVE_GCRYPT |
0284adc6 | 2049 | /* Try to load the FSPRG state, and if we can't, then |
baed47c3 LP |
2050 | * just don't do sealing */ |
2051 | r = journal_file_fss_load(f); | |
0284adc6 | 2052 | if (r < 0) |
baed47c3 | 2053 | f->seal = false; |
feb12d3e | 2054 | #endif |
7560fffc | 2055 | |
0284adc6 LP |
2056 | r = journal_file_init_header(f, template); |
2057 | if (r < 0) | |
2058 | goto fail; | |
7560fffc | 2059 | |
0284adc6 LP |
2060 | if (fstat(f->fd, &f->last_stat) < 0) { |
2061 | r = -errno; | |
2062 | goto fail; | |
2063 | } | |
2064 | } | |
7560fffc | 2065 | |
0284adc6 LP |
2066 | if (f->last_stat.st_size < (off_t) HEADER_SIZE_MIN) { |
2067 | r = -EIO; | |
2068 | goto fail; | |
2069 | } | |
7560fffc | 2070 | |
0284adc6 LP |
2071 | f->header = mmap(NULL, PAGE_ALIGN(sizeof(Header)), prot_from_flags(flags), MAP_SHARED, f->fd, 0); |
2072 | if (f->header == MAP_FAILED) { | |
2073 | f->header = NULL; | |
2074 | r = -errno; | |
2075 | goto fail; | |
2076 | } | |
7560fffc | 2077 | |
0284adc6 LP |
2078 | if (!newly_created) { |
2079 | r = journal_file_verify_header(f); | |
2080 | if (r < 0) | |
2081 | goto fail; | |
2082 | } | |
7560fffc | 2083 | |
feb12d3e | 2084 | #ifdef HAVE_GCRYPT |
0284adc6 | 2085 | if (!newly_created && f->writable) { |
baed47c3 | 2086 | r = journal_file_fss_load(f); |
0284adc6 LP |
2087 | if (r < 0) |
2088 | goto fail; | |
2089 | } | |
feb12d3e | 2090 | #endif |
cec736d2 LP |
2091 | |
2092 | if (f->writable) { | |
4a92baf3 LP |
2093 | if (metrics) { |
2094 | journal_default_metrics(metrics, f->fd); | |
2095 | f->metrics = *metrics; | |
2096 | } else if (template) | |
2097 | f->metrics = template->metrics; | |
2098 | ||
cec736d2 LP |
2099 | r = journal_file_refresh_header(f); |
2100 | if (r < 0) | |
2101 | goto fail; | |
2102 | } | |
2103 | ||
feb12d3e | 2104 | #ifdef HAVE_GCRYPT |
baed47c3 | 2105 | r = journal_file_hmac_setup(f); |
14d10188 LP |
2106 | if (r < 0) |
2107 | goto fail; | |
feb12d3e | 2108 | #endif |
14d10188 | 2109 | |
cec736d2 | 2110 | if (newly_created) { |
de190aef | 2111 | r = journal_file_setup_field_hash_table(f); |
cec736d2 LP |
2112 | if (r < 0) |
2113 | goto fail; | |
2114 | ||
de190aef | 2115 | r = journal_file_setup_data_hash_table(f); |
cec736d2 LP |
2116 | if (r < 0) |
2117 | goto fail; | |
7560fffc | 2118 | |
feb12d3e | 2119 | #ifdef HAVE_GCRYPT |
7560fffc LP |
2120 | r = journal_file_append_first_tag(f); |
2121 | if (r < 0) | |
2122 | goto fail; | |
feb12d3e | 2123 | #endif |
cec736d2 LP |
2124 | } |
2125 | ||
de190aef | 2126 | r = journal_file_map_field_hash_table(f); |
cec736d2 LP |
2127 | if (r < 0) |
2128 | goto fail; | |
2129 | ||
de190aef | 2130 | r = journal_file_map_data_hash_table(f); |
cec736d2 LP |
2131 | if (r < 0) |
2132 | goto fail; | |
2133 | ||
2134 | if (ret) | |
2135 | *ret = f; | |
2136 | ||
2137 | return 0; | |
2138 | ||
2139 | fail: | |
2140 | journal_file_close(f); | |
2141 | ||
2142 | return r; | |
2143 | } | |
0ac38b70 | 2144 | |
baed47c3 | 2145 | int journal_file_rotate(JournalFile **f, bool compress, bool seal) { |
0ac38b70 LP |
2146 | char *p; |
2147 | size_t l; | |
2148 | JournalFile *old_file, *new_file = NULL; | |
2149 | int r; | |
2150 | ||
2151 | assert(f); | |
2152 | assert(*f); | |
2153 | ||
2154 | old_file = *f; | |
2155 | ||
2156 | if (!old_file->writable) | |
2157 | return -EINVAL; | |
2158 | ||
2159 | if (!endswith(old_file->path, ".journal")) | |
2160 | return -EINVAL; | |
2161 | ||
2162 | l = strlen(old_file->path); | |
2163 | ||
9447a7f1 | 2164 | p = new(char, l + 1 + 32 + 1 + 16 + 1 + 16 + 1); |
0ac38b70 LP |
2165 | if (!p) |
2166 | return -ENOMEM; | |
2167 | ||
2168 | memcpy(p, old_file->path, l - 8); | |
2169 | p[l-8] = '@'; | |
2170 | sd_id128_to_string(old_file->header->seqnum_id, p + l - 8 + 1); | |
2171 | snprintf(p + l - 8 + 1 + 32, 1 + 16 + 1 + 16 + 8 + 1, | |
2172 | "-%016llx-%016llx.journal", | |
beec0085 | 2173 | (unsigned long long) le64toh((*f)->header->tail_entry_seqnum), |
0ac38b70 LP |
2174 | (unsigned long long) le64toh((*f)->header->tail_entry_realtime)); |
2175 | ||
2176 | r = rename(old_file->path, p); | |
2177 | free(p); | |
2178 | ||
2179 | if (r < 0) | |
2180 | return -errno; | |
2181 | ||
ccdbaf91 | 2182 | old_file->header->state = STATE_ARCHIVED; |
0ac38b70 | 2183 | |
baed47c3 | 2184 | r = journal_file_open(old_file->path, old_file->flags, old_file->mode, compress, seal, NULL, old_file->mmap, old_file, &new_file); |
0ac38b70 LP |
2185 | journal_file_close(old_file); |
2186 | ||
2187 | *f = new_file; | |
2188 | return r; | |
2189 | } | |
2190 | ||
9447a7f1 LP |
2191 | int journal_file_open_reliably( |
2192 | const char *fname, | |
2193 | int flags, | |
2194 | mode_t mode, | |
7560fffc | 2195 | bool compress, |
baed47c3 | 2196 | bool seal, |
4a92baf3 | 2197 | JournalMetrics *metrics, |
27370278 | 2198 | MMapCache *mmap_cache, |
9447a7f1 LP |
2199 | JournalFile *template, |
2200 | JournalFile **ret) { | |
2201 | ||
2202 | int r; | |
2203 | size_t l; | |
2204 | char *p; | |
2205 | ||
baed47c3 | 2206 | r = journal_file_open(fname, flags, mode, compress, seal, |
27370278 | 2207 | metrics, mmap_cache, template, ret); |
0071d9f1 LP |
2208 | if (r != -EBADMSG && /* corrupted */ |
2209 | r != -ENODATA && /* truncated */ | |
2210 | r != -EHOSTDOWN && /* other machine */ | |
a1a1898f LP |
2211 | r != -EPROTONOSUPPORT && /* incompatible feature */ |
2212 | r != -EBUSY && /* unclean shutdown */ | |
2213 | r != -ESHUTDOWN /* already archived */) | |
9447a7f1 LP |
2214 | return r; |
2215 | ||
2216 | if ((flags & O_ACCMODE) == O_RDONLY) | |
2217 | return r; | |
2218 | ||
2219 | if (!(flags & O_CREAT)) | |
2220 | return r; | |
2221 | ||
7560fffc LP |
2222 | if (!endswith(fname, ".journal")) |
2223 | return r; | |
2224 | ||
5c70eab4 LP |
2225 | /* The file is corrupted. Rotate it away and try it again (but only once) */ |
2226 | ||
9447a7f1 LP |
2227 | l = strlen(fname); |
2228 | if (asprintf(&p, "%.*s@%016llx-%016llx.journal~", | |
2229 | (int) (l-8), fname, | |
2230 | (unsigned long long) now(CLOCK_REALTIME), | |
2231 | random_ull()) < 0) | |
2232 | return -ENOMEM; | |
2233 | ||
2234 | r = rename(fname, p); | |
2235 | free(p); | |
2236 | if (r < 0) | |
2237 | return -errno; | |
2238 | ||
a1a1898f | 2239 | log_warning("File %s corrupted or uncleanly shut down, renaming and replacing.", fname); |
9447a7f1 | 2240 | |
baed47c3 | 2241 | return journal_file_open(fname, flags, mode, compress, seal, |
27370278 | 2242 | metrics, mmap_cache, template, ret); |
9447a7f1 LP |
2243 | } |
2244 | ||
cf244689 LP |
2245 | |
2246 | int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset) { | |
2247 | uint64_t i, n; | |
2248 | uint64_t q, xor_hash = 0; | |
2249 | int r; | |
2250 | EntryItem *items; | |
2251 | dual_timestamp ts; | |
2252 | ||
2253 | assert(from); | |
2254 | assert(to); | |
2255 | assert(o); | |
2256 | assert(p); | |
2257 | ||
2258 | if (!to->writable) | |
2259 | return -EPERM; | |
2260 | ||
2261 | ts.monotonic = le64toh(o->entry.monotonic); | |
2262 | ts.realtime = le64toh(o->entry.realtime); | |
2263 | ||
2264 | if (to->tail_entry_monotonic_valid && | |
2265 | ts.monotonic < le64toh(to->header->tail_entry_monotonic)) | |
2266 | return -EINVAL; | |
2267 | ||
cf244689 LP |
2268 | n = journal_file_entry_n_items(o); |
2269 | items = alloca(sizeof(EntryItem) * n); | |
2270 | ||
2271 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2272 | uint64_t l, h; |
2273 | le64_t le_hash; | |
cf244689 LP |
2274 | size_t t; |
2275 | void *data; | |
2276 | Object *u; | |
2277 | ||
2278 | q = le64toh(o->entry.items[i].object_offset); | |
2279 | le_hash = o->entry.items[i].hash; | |
2280 | ||
2281 | r = journal_file_move_to_object(from, OBJECT_DATA, q, &o); | |
2282 | if (r < 0) | |
2283 | return r; | |
2284 | ||
2285 | if (le_hash != o->data.hash) | |
2286 | return -EBADMSG; | |
2287 | ||
2288 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2289 | t = (size_t) l; | |
2290 | ||
2291 | /* We hit the limit on 32bit machines */ | |
2292 | if ((uint64_t) t != l) | |
2293 | return -E2BIG; | |
2294 | ||
2295 | if (o->object.flags & OBJECT_COMPRESSED) { | |
2296 | #ifdef HAVE_XZ | |
2297 | uint64_t rsize; | |
2298 | ||
2299 | if (!uncompress_blob(o->data.payload, l, &from->compress_buffer, &from->compress_buffer_size, &rsize)) | |
2300 | return -EBADMSG; | |
2301 | ||
2302 | data = from->compress_buffer; | |
2303 | l = rsize; | |
2304 | #else | |
2305 | return -EPROTONOSUPPORT; | |
2306 | #endif | |
2307 | } else | |
2308 | data = o->data.payload; | |
2309 | ||
2310 | r = journal_file_append_data(to, data, l, &u, &h); | |
2311 | if (r < 0) | |
2312 | return r; | |
2313 | ||
2314 | xor_hash ^= le64toh(u->data.hash); | |
2315 | items[i].object_offset = htole64(h); | |
2316 | items[i].hash = u->data.hash; | |
2317 | ||
2318 | r = journal_file_move_to_object(from, OBJECT_ENTRY, p, &o); | |
2319 | if (r < 0) | |
2320 | return r; | |
2321 | } | |
2322 | ||
2323 | return journal_file_append_entry_internal(to, &ts, xor_hash, items, n, seqnum, ret, offset); | |
2324 | } | |
babfc091 LP |
2325 | |
2326 | void journal_default_metrics(JournalMetrics *m, int fd) { | |
2327 | uint64_t fs_size = 0; | |
2328 | struct statvfs ss; | |
a7bc2c2a | 2329 | char a[FORMAT_BYTES_MAX], b[FORMAT_BYTES_MAX], c[FORMAT_BYTES_MAX], d[FORMAT_BYTES_MAX]; |
babfc091 LP |
2330 | |
2331 | assert(m); | |
2332 | assert(fd >= 0); | |
2333 | ||
2334 | if (fstatvfs(fd, &ss) >= 0) | |
2335 | fs_size = ss.f_frsize * ss.f_blocks; | |
2336 | ||
2337 | if (m->max_use == (uint64_t) -1) { | |
2338 | ||
2339 | if (fs_size > 0) { | |
2340 | m->max_use = PAGE_ALIGN(fs_size / 10); /* 10% of file system size */ | |
2341 | ||
2342 | if (m->max_use > DEFAULT_MAX_USE_UPPER) | |
2343 | m->max_use = DEFAULT_MAX_USE_UPPER; | |
2344 | ||
2345 | if (m->max_use < DEFAULT_MAX_USE_LOWER) | |
2346 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2347 | } else | |
2348 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2349 | } else { | |
2350 | m->max_use = PAGE_ALIGN(m->max_use); | |
2351 | ||
2352 | if (m->max_use < JOURNAL_FILE_SIZE_MIN*2) | |
2353 | m->max_use = JOURNAL_FILE_SIZE_MIN*2; | |
2354 | } | |
2355 | ||
2356 | if (m->max_size == (uint64_t) -1) { | |
2357 | m->max_size = PAGE_ALIGN(m->max_use / 8); /* 8 chunks */ | |
2358 | ||
2359 | if (m->max_size > DEFAULT_MAX_SIZE_UPPER) | |
2360 | m->max_size = DEFAULT_MAX_SIZE_UPPER; | |
2361 | } else | |
2362 | m->max_size = PAGE_ALIGN(m->max_size); | |
2363 | ||
2364 | if (m->max_size < JOURNAL_FILE_SIZE_MIN) | |
2365 | m->max_size = JOURNAL_FILE_SIZE_MIN; | |
2366 | ||
2367 | if (m->max_size*2 > m->max_use) | |
2368 | m->max_use = m->max_size*2; | |
2369 | ||
2370 | if (m->min_size == (uint64_t) -1) | |
2371 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2372 | else { | |
2373 | m->min_size = PAGE_ALIGN(m->min_size); | |
2374 | ||
2375 | if (m->min_size < JOURNAL_FILE_SIZE_MIN) | |
2376 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2377 | ||
2378 | if (m->min_size > m->max_size) | |
2379 | m->max_size = m->min_size; | |
2380 | } | |
2381 | ||
2382 | if (m->keep_free == (uint64_t) -1) { | |
2383 | ||
2384 | if (fs_size > 0) { | |
2385 | m->keep_free = PAGE_ALIGN(fs_size / 20); /* 5% of file system size */ | |
2386 | ||
2387 | if (m->keep_free > DEFAULT_KEEP_FREE_UPPER) | |
2388 | m->keep_free = DEFAULT_KEEP_FREE_UPPER; | |
2389 | ||
2390 | } else | |
2391 | m->keep_free = DEFAULT_KEEP_FREE; | |
2392 | } | |
2393 | ||
2b43f939 LP |
2394 | log_debug("Fixed max_use=%s max_size=%s min_size=%s keep_free=%s", |
2395 | format_bytes(a, sizeof(a), m->max_use), | |
2396 | format_bytes(b, sizeof(b), m->max_size), | |
2397 | format_bytes(c, sizeof(c), m->min_size), | |
2398 | format_bytes(d, sizeof(d), m->keep_free)); | |
babfc091 | 2399 | } |
08984293 LP |
2400 | |
2401 | int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to) { | |
08984293 LP |
2402 | assert(f); |
2403 | assert(from || to); | |
2404 | ||
2405 | if (from) { | |
162566a4 LP |
2406 | if (f->header->head_entry_realtime == 0) |
2407 | return -ENOENT; | |
08984293 | 2408 | |
162566a4 | 2409 | *from = le64toh(f->header->head_entry_realtime); |
08984293 LP |
2410 | } |
2411 | ||
2412 | if (to) { | |
162566a4 LP |
2413 | if (f->header->tail_entry_realtime == 0) |
2414 | return -ENOENT; | |
08984293 | 2415 | |
162566a4 | 2416 | *to = le64toh(f->header->tail_entry_realtime); |
08984293 LP |
2417 | } |
2418 | ||
2419 | return 1; | |
2420 | } | |
2421 | ||
2422 | int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot_id, usec_t *from, usec_t *to) { | |
2423 | char t[9+32+1] = "_BOOT_ID="; | |
2424 | Object *o; | |
2425 | uint64_t p; | |
2426 | int r; | |
2427 | ||
2428 | assert(f); | |
2429 | assert(from || to); | |
2430 | ||
2431 | sd_id128_to_string(boot_id, t + 9); | |
2432 | ||
2433 | r = journal_file_find_data_object(f, t, strlen(t), &o, &p); | |
2434 | if (r <= 0) | |
2435 | return r; | |
2436 | ||
2437 | if (le64toh(o->data.n_entries) <= 0) | |
2438 | return 0; | |
2439 | ||
2440 | if (from) { | |
2441 | r = journal_file_move_to_object(f, OBJECT_ENTRY, le64toh(o->data.entry_offset), &o); | |
2442 | if (r < 0) | |
2443 | return r; | |
2444 | ||
2445 | *from = le64toh(o->entry.monotonic); | |
2446 | } | |
2447 | ||
2448 | if (to) { | |
2449 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
2450 | if (r < 0) | |
2451 | return r; | |
2452 | ||
2453 | r = generic_array_get_plus_one(f, | |
2454 | le64toh(o->data.entry_offset), | |
2455 | le64toh(o->data.entry_array_offset), | |
2456 | le64toh(o->data.n_entries)-1, | |
2457 | &o, NULL); | |
2458 | if (r <= 0) | |
2459 | return r; | |
2460 | ||
2461 | *to = le64toh(o->entry.monotonic); | |
2462 | } | |
2463 | ||
2464 | return 1; | |
2465 | } | |
dca6219e LP |
2466 | |
2467 | bool journal_file_rotate_suggested(JournalFile *f) { | |
2468 | assert(f); | |
2469 | ||
2470 | /* If we gained new header fields we gained new features, | |
2471 | * hence suggest a rotation */ | |
361f9cbc LP |
2472 | if (le64toh(f->header->header_size) < sizeof(Header)) { |
2473 | log_debug("%s uses an outdated header, suggesting rotation.", f->path); | |
dca6219e | 2474 | return true; |
361f9cbc | 2475 | } |
dca6219e LP |
2476 | |
2477 | /* Let's check if the hash tables grew over a certain fill | |
2478 | * level (75%, borrowing this value from Java's hash table | |
2479 | * implementation), and if so suggest a rotation. To calculate | |
2480 | * the fill level we need the n_data field, which only exists | |
2481 | * in newer versions. */ | |
2482 | ||
2483 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) | |
361f9cbc LP |
2484 | if (le64toh(f->header->n_data) * 4ULL > (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
2485 | 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.", | |
2486 | f->path, | |
2487 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem))), | |
2488 | (unsigned long long) le64toh(f->header->n_data), | |
2489 | (unsigned long long) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)), | |
2490 | (unsigned long long) (f->last_stat.st_size), | |
2491 | (unsigned long long) (f->last_stat.st_size / le64toh(f->header->n_data))); | |
dca6219e | 2492 | return true; |
361f9cbc | 2493 | } |
dca6219e LP |
2494 | |
2495 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) | |
361f9cbc LP |
2496 | if (le64toh(f->header->n_fields) * 4ULL > (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
2497 | log_debug("Field hash table of %s has a fill level at %.1f (%llu of %llu items), suggesting rotation.", | |
2498 | f->path, | |
2499 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))), | |
2500 | (unsigned long long) le64toh(f->header->n_fields), | |
2501 | (unsigned long long) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))); | |
dca6219e | 2502 | return true; |
361f9cbc | 2503 | } |
dca6219e LP |
2504 | |
2505 | return false; | |
2506 | } |