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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 | ||
7762e02b LP |
224 | if (!VALID64(le64toh(f->header->data_hash_table_offset)) || |
225 | !VALID64(le64toh(f->header->field_hash_table_offset)) || | |
226 | !VALID64(le64toh(f->header->tail_object_offset)) || | |
227 | !VALID64(le64toh(f->header->entry_array_offset))) | |
228 | return -ENODATA; | |
229 | ||
230 | if (le64toh(f->header->data_hash_table_offset) < le64toh(f->header->header_size) || | |
231 | le64toh(f->header->field_hash_table_offset) < le64toh(f->header->header_size) || | |
232 | le64toh(f->header->tail_object_offset) < le64toh(f->header->header_size) || | |
233 | le64toh(f->header->entry_array_offset) < le64toh(f->header->header_size)) | |
cec736d2 LP |
234 | return -ENODATA; |
235 | ||
236 | if (f->writable) { | |
ccdbaf91 | 237 | uint8_t state; |
cec736d2 LP |
238 | sd_id128_t machine_id; |
239 | int r; | |
240 | ||
241 | r = sd_id128_get_machine(&machine_id); | |
242 | if (r < 0) | |
243 | return r; | |
244 | ||
245 | if (!sd_id128_equal(machine_id, f->header->machine_id)) | |
246 | return -EHOSTDOWN; | |
247 | ||
de190aef | 248 | state = f->header->state; |
cec736d2 | 249 | |
71fa6f00 LP |
250 | if (state == STATE_ONLINE) { |
251 | log_debug("Journal file %s is already online. Assuming unclean closing.", f->path); | |
252 | return -EBUSY; | |
253 | } else if (state == STATE_ARCHIVED) | |
cec736d2 | 254 | return -ESHUTDOWN; |
71fa6f00 LP |
255 | else if (state != STATE_OFFLINE) { |
256 | log_debug("Journal file %s has unknown state %u.", f->path, state); | |
257 | return -EBUSY; | |
258 | } | |
cec736d2 LP |
259 | } |
260 | ||
8088cbd3 | 261 | f->compress = JOURNAL_HEADER_COMPRESSED(f->header); |
c586dbf1 | 262 | |
f1889c91 | 263 | f->seal = JOURNAL_HEADER_SEALED(f->header); |
7560fffc | 264 | |
cec736d2 LP |
265 | return 0; |
266 | } | |
267 | ||
268 | static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size) { | |
cec736d2 | 269 | uint64_t old_size, new_size; |
fec2aa2f | 270 | int r; |
cec736d2 LP |
271 | |
272 | assert(f); | |
273 | ||
cec736d2 | 274 | /* We assume that this file is not sparse, and we know that |
38ac38b2 | 275 | * for sure, since we always call posix_fallocate() |
cec736d2 LP |
276 | * ourselves */ |
277 | ||
278 | old_size = | |
23b0b2b2 | 279 | le64toh(f->header->header_size) + |
cec736d2 LP |
280 | le64toh(f->header->arena_size); |
281 | ||
bc85bfee | 282 | new_size = PAGE_ALIGN(offset + size); |
23b0b2b2 LP |
283 | if (new_size < le64toh(f->header->header_size)) |
284 | new_size = le64toh(f->header->header_size); | |
bc85bfee LP |
285 | |
286 | if (new_size <= old_size) | |
cec736d2 LP |
287 | return 0; |
288 | ||
bc85bfee LP |
289 | if (f->metrics.max_size > 0 && |
290 | new_size > f->metrics.max_size) | |
291 | return -E2BIG; | |
cec736d2 | 292 | |
bc85bfee LP |
293 | if (new_size > f->metrics.min_size && |
294 | f->metrics.keep_free > 0) { | |
cec736d2 LP |
295 | struct statvfs svfs; |
296 | ||
297 | if (fstatvfs(f->fd, &svfs) >= 0) { | |
298 | uint64_t available; | |
299 | ||
300 | available = svfs.f_bfree * svfs.f_bsize; | |
301 | ||
bc85bfee LP |
302 | if (available >= f->metrics.keep_free) |
303 | available -= f->metrics.keep_free; | |
cec736d2 LP |
304 | else |
305 | available = 0; | |
306 | ||
307 | if (new_size - old_size > available) | |
308 | return -E2BIG; | |
309 | } | |
310 | } | |
311 | ||
bc85bfee LP |
312 | /* Note that the glibc fallocate() fallback is very |
313 | inefficient, hence we try to minimize the allocation area | |
314 | as we can. */ | |
fec2aa2f GV |
315 | r = posix_fallocate(f->fd, old_size, new_size - old_size); |
316 | if (r != 0) | |
317 | return -r; | |
cec736d2 LP |
318 | |
319 | if (fstat(f->fd, &f->last_stat) < 0) | |
320 | return -errno; | |
321 | ||
23b0b2b2 | 322 | f->header->arena_size = htole64(new_size - le64toh(f->header->header_size)); |
cec736d2 LP |
323 | |
324 | return 0; | |
325 | } | |
326 | ||
fcde2389 | 327 | static int journal_file_move_to(JournalFile *f, int context, bool keep_always, uint64_t offset, uint64_t size, void **ret) { |
cec736d2 | 328 | assert(f); |
cec736d2 LP |
329 | assert(ret); |
330 | ||
7762e02b LP |
331 | if (size <= 0) |
332 | return -EINVAL; | |
333 | ||
2a59ea54 | 334 | /* Avoid SIGBUS on invalid accesses */ |
4bbdcdb3 LP |
335 | if (offset + size > (uint64_t) f->last_stat.st_size) { |
336 | /* Hmm, out of range? Let's refresh the fstat() data | |
337 | * first, before we trust that check. */ | |
338 | ||
339 | if (fstat(f->fd, &f->last_stat) < 0 || | |
340 | offset + size > (uint64_t) f->last_stat.st_size) | |
341 | return -EADDRNOTAVAIL; | |
342 | } | |
343 | ||
fcde2389 | 344 | return mmap_cache_get(f->mmap, f->fd, f->prot, context, keep_always, offset, size, &f->last_stat, ret); |
cec736d2 LP |
345 | } |
346 | ||
16e9f408 LP |
347 | static uint64_t minimum_header_size(Object *o) { |
348 | ||
349 | static uint64_t table[] = { | |
350 | [OBJECT_DATA] = sizeof(DataObject), | |
351 | [OBJECT_FIELD] = sizeof(FieldObject), | |
352 | [OBJECT_ENTRY] = sizeof(EntryObject), | |
353 | [OBJECT_DATA_HASH_TABLE] = sizeof(HashTableObject), | |
354 | [OBJECT_FIELD_HASH_TABLE] = sizeof(HashTableObject), | |
355 | [OBJECT_ENTRY_ARRAY] = sizeof(EntryArrayObject), | |
356 | [OBJECT_TAG] = sizeof(TagObject), | |
357 | }; | |
358 | ||
359 | if (o->object.type >= ELEMENTSOF(table) || table[o->object.type] <= 0) | |
360 | return sizeof(ObjectHeader); | |
361 | ||
362 | return table[o->object.type]; | |
363 | } | |
364 | ||
de190aef | 365 | int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret) { |
cec736d2 LP |
366 | int r; |
367 | void *t; | |
368 | Object *o; | |
369 | uint64_t s; | |
16e9f408 | 370 | unsigned context; |
cec736d2 LP |
371 | |
372 | assert(f); | |
373 | assert(ret); | |
374 | ||
db11ac1a LP |
375 | /* Objects may only be located at multiple of 64 bit */ |
376 | if (!VALID64(offset)) | |
377 | return -EFAULT; | |
378 | ||
16e9f408 LP |
379 | /* One context for each type, plus one catch-all for the rest */ |
380 | context = type > 0 && type < _OBJECT_TYPE_MAX ? type : 0; | |
381 | ||
fcde2389 | 382 | r = journal_file_move_to(f, context, false, offset, sizeof(ObjectHeader), &t); |
cec736d2 LP |
383 | if (r < 0) |
384 | return r; | |
385 | ||
386 | o = (Object*) t; | |
387 | s = le64toh(o->object.size); | |
388 | ||
389 | if (s < sizeof(ObjectHeader)) | |
390 | return -EBADMSG; | |
391 | ||
16e9f408 LP |
392 | if (o->object.type <= OBJECT_UNUSED) |
393 | return -EBADMSG; | |
394 | ||
395 | if (s < minimum_header_size(o)) | |
396 | return -EBADMSG; | |
397 | ||
de190aef | 398 | if (type >= 0 && o->object.type != type) |
cec736d2 LP |
399 | return -EBADMSG; |
400 | ||
401 | if (s > sizeof(ObjectHeader)) { | |
fcde2389 | 402 | r = journal_file_move_to(f, o->object.type, false, offset, s, &t); |
cec736d2 LP |
403 | if (r < 0) |
404 | return r; | |
405 | ||
406 | o = (Object*) t; | |
407 | } | |
408 | ||
cec736d2 LP |
409 | *ret = o; |
410 | return 0; | |
411 | } | |
412 | ||
d98cc1f2 | 413 | static uint64_t journal_file_entry_seqnum(JournalFile *f, uint64_t *seqnum) { |
cec736d2 LP |
414 | uint64_t r; |
415 | ||
416 | assert(f); | |
417 | ||
beec0085 | 418 | r = le64toh(f->header->tail_entry_seqnum) + 1; |
c2373f84 LP |
419 | |
420 | if (seqnum) { | |
de190aef | 421 | /* If an external seqnum counter was passed, we update |
c2373f84 LP |
422 | * both the local and the external one, and set it to |
423 | * the maximum of both */ | |
424 | ||
425 | if (*seqnum + 1 > r) | |
426 | r = *seqnum + 1; | |
427 | ||
428 | *seqnum = r; | |
429 | } | |
430 | ||
beec0085 | 431 | f->header->tail_entry_seqnum = htole64(r); |
cec736d2 | 432 | |
beec0085 LP |
433 | if (f->header->head_entry_seqnum == 0) |
434 | f->header->head_entry_seqnum = htole64(r); | |
de190aef | 435 | |
cec736d2 LP |
436 | return r; |
437 | } | |
438 | ||
0284adc6 | 439 | int journal_file_append_object(JournalFile *f, int type, uint64_t size, Object **ret, uint64_t *offset) { |
cec736d2 LP |
440 | int r; |
441 | uint64_t p; | |
442 | Object *tail, *o; | |
443 | void *t; | |
444 | ||
445 | assert(f); | |
16e9f408 | 446 | assert(type > 0 && type < _OBJECT_TYPE_MAX); |
cec736d2 LP |
447 | assert(size >= sizeof(ObjectHeader)); |
448 | assert(offset); | |
449 | assert(ret); | |
450 | ||
451 | p = le64toh(f->header->tail_object_offset); | |
cec736d2 | 452 | if (p == 0) |
23b0b2b2 | 453 | p = le64toh(f->header->header_size); |
cec736d2 | 454 | else { |
de190aef | 455 | r = journal_file_move_to_object(f, -1, p, &tail); |
cec736d2 LP |
456 | if (r < 0) |
457 | return r; | |
458 | ||
459 | p += ALIGN64(le64toh(tail->object.size)); | |
460 | } | |
461 | ||
462 | r = journal_file_allocate(f, p, size); | |
463 | if (r < 0) | |
464 | return r; | |
465 | ||
fcde2389 | 466 | r = journal_file_move_to(f, type, false, p, size, &t); |
cec736d2 LP |
467 | if (r < 0) |
468 | return r; | |
469 | ||
470 | o = (Object*) t; | |
471 | ||
472 | zero(o->object); | |
de190aef | 473 | o->object.type = type; |
cec736d2 LP |
474 | o->object.size = htole64(size); |
475 | ||
476 | f->header->tail_object_offset = htole64(p); | |
cec736d2 LP |
477 | f->header->n_objects = htole64(le64toh(f->header->n_objects) + 1); |
478 | ||
479 | *ret = o; | |
480 | *offset = p; | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
de190aef | 485 | static int journal_file_setup_data_hash_table(JournalFile *f) { |
cec736d2 LP |
486 | uint64_t s, p; |
487 | Object *o; | |
488 | int r; | |
489 | ||
490 | assert(f); | |
491 | ||
dfabe643 | 492 | /* We estimate that we need 1 hash table entry per 768 of |
4a92baf3 LP |
493 | journal file and we want to make sure we never get beyond |
494 | 75% fill level. Calculate the hash table size for the | |
495 | maximum file size based on these metrics. */ | |
496 | ||
dfabe643 | 497 | s = (f->metrics.max_size * 4 / 768 / 3) * sizeof(HashItem); |
4a92baf3 LP |
498 | if (s < DEFAULT_DATA_HASH_TABLE_SIZE) |
499 | s = DEFAULT_DATA_HASH_TABLE_SIZE; | |
500 | ||
2b43f939 | 501 | log_debug("Reserving %llu entries in hash table.", (unsigned long long) (s / sizeof(HashItem))); |
4a92baf3 | 502 | |
de190aef LP |
503 | r = journal_file_append_object(f, |
504 | OBJECT_DATA_HASH_TABLE, | |
505 | offsetof(Object, hash_table.items) + s, | |
506 | &o, &p); | |
cec736d2 LP |
507 | if (r < 0) |
508 | return r; | |
509 | ||
de190aef | 510 | memset(o->hash_table.items, 0, s); |
cec736d2 | 511 | |
de190aef LP |
512 | f->header->data_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
513 | f->header->data_hash_table_size = htole64(s); | |
cec736d2 LP |
514 | |
515 | return 0; | |
516 | } | |
517 | ||
de190aef | 518 | static int journal_file_setup_field_hash_table(JournalFile *f) { |
cec736d2 LP |
519 | uint64_t s, p; |
520 | Object *o; | |
521 | int r; | |
522 | ||
523 | assert(f); | |
524 | ||
de190aef LP |
525 | s = DEFAULT_FIELD_HASH_TABLE_SIZE; |
526 | r = journal_file_append_object(f, | |
527 | OBJECT_FIELD_HASH_TABLE, | |
528 | offsetof(Object, hash_table.items) + s, | |
529 | &o, &p); | |
cec736d2 LP |
530 | if (r < 0) |
531 | return r; | |
532 | ||
de190aef | 533 | memset(o->hash_table.items, 0, s); |
cec736d2 | 534 | |
de190aef LP |
535 | f->header->field_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
536 | f->header->field_hash_table_size = htole64(s); | |
cec736d2 LP |
537 | |
538 | return 0; | |
539 | } | |
540 | ||
de190aef | 541 | static int journal_file_map_data_hash_table(JournalFile *f) { |
cec736d2 LP |
542 | uint64_t s, p; |
543 | void *t; | |
544 | int r; | |
545 | ||
546 | assert(f); | |
547 | ||
de190aef LP |
548 | p = le64toh(f->header->data_hash_table_offset); |
549 | s = le64toh(f->header->data_hash_table_size); | |
cec736d2 | 550 | |
de190aef | 551 | r = journal_file_move_to(f, |
16e9f408 | 552 | OBJECT_DATA_HASH_TABLE, |
fcde2389 | 553 | true, |
de190aef LP |
554 | p, s, |
555 | &t); | |
cec736d2 LP |
556 | if (r < 0) |
557 | return r; | |
558 | ||
de190aef | 559 | f->data_hash_table = t; |
cec736d2 LP |
560 | return 0; |
561 | } | |
562 | ||
de190aef | 563 | static int journal_file_map_field_hash_table(JournalFile *f) { |
cec736d2 LP |
564 | uint64_t s, p; |
565 | void *t; | |
566 | int r; | |
567 | ||
568 | assert(f); | |
569 | ||
de190aef LP |
570 | p = le64toh(f->header->field_hash_table_offset); |
571 | s = le64toh(f->header->field_hash_table_size); | |
cec736d2 | 572 | |
de190aef | 573 | r = journal_file_move_to(f, |
16e9f408 | 574 | OBJECT_FIELD_HASH_TABLE, |
fcde2389 | 575 | true, |
de190aef LP |
576 | p, s, |
577 | &t); | |
cec736d2 LP |
578 | if (r < 0) |
579 | return r; | |
580 | ||
de190aef | 581 | f->field_hash_table = t; |
cec736d2 LP |
582 | return 0; |
583 | } | |
584 | ||
de190aef LP |
585 | static int journal_file_link_data(JournalFile *f, Object *o, uint64_t offset, uint64_t hash) { |
586 | uint64_t p, h; | |
cec736d2 LP |
587 | int r; |
588 | ||
589 | assert(f); | |
590 | assert(o); | |
591 | assert(offset > 0); | |
b588975f LP |
592 | |
593 | if (o->object.type != OBJECT_DATA) | |
594 | return -EINVAL; | |
cec736d2 | 595 | |
48496df6 LP |
596 | /* This might alter the window we are looking at */ |
597 | ||
de190aef LP |
598 | o->data.next_hash_offset = o->data.next_field_offset = 0; |
599 | o->data.entry_offset = o->data.entry_array_offset = 0; | |
600 | o->data.n_entries = 0; | |
cec736d2 | 601 | |
de190aef | 602 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
8db4213e | 603 | p = le64toh(f->data_hash_table[h].tail_hash_offset); |
cec736d2 LP |
604 | if (p == 0) { |
605 | /* Only entry in the hash table is easy */ | |
de190aef | 606 | f->data_hash_table[h].head_hash_offset = htole64(offset); |
cec736d2 | 607 | } else { |
48496df6 LP |
608 | /* Move back to the previous data object, to patch in |
609 | * pointer */ | |
cec736d2 | 610 | |
de190aef | 611 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
612 | if (r < 0) |
613 | return r; | |
614 | ||
de190aef | 615 | o->data.next_hash_offset = htole64(offset); |
cec736d2 LP |
616 | } |
617 | ||
de190aef | 618 | f->data_hash_table[h].tail_hash_offset = htole64(offset); |
cec736d2 | 619 | |
dca6219e LP |
620 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
621 | f->header->n_data = htole64(le64toh(f->header->n_data) + 1); | |
622 | ||
cec736d2 LP |
623 | return 0; |
624 | } | |
625 | ||
de190aef LP |
626 | int journal_file_find_data_object_with_hash( |
627 | JournalFile *f, | |
628 | const void *data, uint64_t size, uint64_t hash, | |
629 | Object **ret, uint64_t *offset) { | |
48496df6 | 630 | |
de190aef | 631 | uint64_t p, osize, h; |
cec736d2 LP |
632 | int r; |
633 | ||
634 | assert(f); | |
635 | assert(data || size == 0); | |
636 | ||
637 | osize = offsetof(Object, data.payload) + size; | |
638 | ||
bc85bfee LP |
639 | if (f->header->data_hash_table_size == 0) |
640 | return -EBADMSG; | |
641 | ||
de190aef LP |
642 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
643 | p = le64toh(f->data_hash_table[h].head_hash_offset); | |
cec736d2 | 644 | |
de190aef LP |
645 | while (p > 0) { |
646 | Object *o; | |
cec736d2 | 647 | |
de190aef | 648 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
649 | if (r < 0) |
650 | return r; | |
651 | ||
807e17f0 | 652 | if (le64toh(o->data.hash) != hash) |
85a131e8 | 653 | goto next; |
807e17f0 LP |
654 | |
655 | if (o->object.flags & OBJECT_COMPRESSED) { | |
656 | #ifdef HAVE_XZ | |
b785c858 | 657 | uint64_t l, rsize; |
cec736d2 | 658 | |
807e17f0 LP |
659 | l = le64toh(o->object.size); |
660 | if (l <= offsetof(Object, data.payload)) | |
cec736d2 LP |
661 | return -EBADMSG; |
662 | ||
807e17f0 LP |
663 | l -= offsetof(Object, data.payload); |
664 | ||
665 | if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize)) | |
666 | return -EBADMSG; | |
667 | ||
b785c858 | 668 | if (rsize == size && |
807e17f0 LP |
669 | memcmp(f->compress_buffer, data, size) == 0) { |
670 | ||
671 | if (ret) | |
672 | *ret = o; | |
673 | ||
674 | if (offset) | |
675 | *offset = p; | |
676 | ||
677 | return 1; | |
678 | } | |
679 | #else | |
680 | return -EPROTONOSUPPORT; | |
681 | #endif | |
682 | ||
683 | } else if (le64toh(o->object.size) == osize && | |
684 | memcmp(o->data.payload, data, size) == 0) { | |
685 | ||
cec736d2 LP |
686 | if (ret) |
687 | *ret = o; | |
688 | ||
689 | if (offset) | |
690 | *offset = p; | |
691 | ||
de190aef | 692 | return 1; |
cec736d2 LP |
693 | } |
694 | ||
85a131e8 | 695 | next: |
cec736d2 LP |
696 | p = le64toh(o->data.next_hash_offset); |
697 | } | |
698 | ||
de190aef LP |
699 | return 0; |
700 | } | |
701 | ||
702 | int journal_file_find_data_object( | |
703 | JournalFile *f, | |
704 | const void *data, uint64_t size, | |
705 | Object **ret, uint64_t *offset) { | |
706 | ||
707 | uint64_t hash; | |
708 | ||
709 | assert(f); | |
710 | assert(data || size == 0); | |
711 | ||
712 | hash = hash64(data, size); | |
713 | ||
714 | return journal_file_find_data_object_with_hash(f, | |
715 | data, size, hash, | |
716 | ret, offset); | |
717 | } | |
718 | ||
48496df6 LP |
719 | static int journal_file_append_data( |
720 | JournalFile *f, | |
721 | const void *data, uint64_t size, | |
722 | Object **ret, uint64_t *offset) { | |
723 | ||
de190aef LP |
724 | uint64_t hash, p; |
725 | uint64_t osize; | |
726 | Object *o; | |
727 | int r; | |
807e17f0 | 728 | bool compressed = false; |
de190aef LP |
729 | |
730 | assert(f); | |
731 | assert(data || size == 0); | |
732 | ||
733 | hash = hash64(data, size); | |
734 | ||
735 | r = journal_file_find_data_object_with_hash(f, data, size, hash, &o, &p); | |
736 | if (r < 0) | |
737 | return r; | |
738 | else if (r > 0) { | |
739 | ||
740 | if (ret) | |
741 | *ret = o; | |
742 | ||
743 | if (offset) | |
744 | *offset = p; | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
749 | osize = offsetof(Object, data.payload) + size; | |
750 | r = journal_file_append_object(f, OBJECT_DATA, osize, &o, &p); | |
cec736d2 LP |
751 | if (r < 0) |
752 | return r; | |
753 | ||
cec736d2 | 754 | o->data.hash = htole64(hash); |
807e17f0 LP |
755 | |
756 | #ifdef HAVE_XZ | |
757 | if (f->compress && | |
758 | size >= COMPRESSION_SIZE_THRESHOLD) { | |
759 | uint64_t rsize; | |
760 | ||
761 | compressed = compress_blob(data, size, o->data.payload, &rsize); | |
762 | ||
763 | if (compressed) { | |
764 | o->object.size = htole64(offsetof(Object, data.payload) + rsize); | |
765 | o->object.flags |= OBJECT_COMPRESSED; | |
766 | ||
807e17f0 LP |
767 | log_debug("Compressed data object %lu -> %lu", (unsigned long) size, (unsigned long) rsize); |
768 | } | |
769 | } | |
770 | #endif | |
771 | ||
64825d3c | 772 | if (!compressed && size > 0) |
807e17f0 | 773 | memcpy(o->data.payload, data, size); |
cec736d2 | 774 | |
de190aef | 775 | r = journal_file_link_data(f, o, p, hash); |
cec736d2 LP |
776 | if (r < 0) |
777 | return r; | |
778 | ||
48496df6 LP |
779 | /* The linking might have altered the window, so let's |
780 | * refresh our pointer */ | |
781 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
782 | if (r < 0) | |
783 | return r; | |
784 | ||
5996c7c2 LP |
785 | #ifdef HAVE_GCRYPT |
786 | r = journal_file_hmac_put_object(f, OBJECT_DATA, o, p); | |
787 | if (r < 0) | |
788 | return r; | |
789 | #endif | |
790 | ||
cec736d2 LP |
791 | if (ret) |
792 | *ret = o; | |
793 | ||
794 | if (offset) | |
de190aef | 795 | *offset = p; |
cec736d2 LP |
796 | |
797 | return 0; | |
798 | } | |
799 | ||
800 | uint64_t journal_file_entry_n_items(Object *o) { | |
801 | assert(o); | |
b588975f LP |
802 | |
803 | if (o->object.type != OBJECT_ENTRY) | |
804 | return 0; | |
cec736d2 LP |
805 | |
806 | return (le64toh(o->object.size) - offsetof(Object, entry.items)) / sizeof(EntryItem); | |
807 | } | |
808 | ||
0284adc6 | 809 | uint64_t journal_file_entry_array_n_items(Object *o) { |
de190aef | 810 | assert(o); |
b588975f LP |
811 | |
812 | if (o->object.type != OBJECT_ENTRY_ARRAY) | |
813 | return 0; | |
de190aef LP |
814 | |
815 | return (le64toh(o->object.size) - offsetof(Object, entry_array.items)) / sizeof(uint64_t); | |
816 | } | |
817 | ||
fb9a24b6 LP |
818 | uint64_t journal_file_hash_table_n_items(Object *o) { |
819 | assert(o); | |
b588975f LP |
820 | |
821 | if (o->object.type != OBJECT_DATA_HASH_TABLE && | |
822 | o->object.type != OBJECT_FIELD_HASH_TABLE) | |
823 | return 0; | |
fb9a24b6 LP |
824 | |
825 | return (le64toh(o->object.size) - offsetof(Object, hash_table.items)) / sizeof(HashItem); | |
826 | } | |
827 | ||
de190aef | 828 | static int link_entry_into_array(JournalFile *f, |
4fd052ae FC |
829 | le64_t *first, |
830 | le64_t *idx, | |
de190aef | 831 | uint64_t p) { |
cec736d2 | 832 | int r; |
de190aef LP |
833 | uint64_t n = 0, ap = 0, q, i, a, hidx; |
834 | Object *o; | |
835 | ||
cec736d2 | 836 | assert(f); |
de190aef LP |
837 | assert(first); |
838 | assert(idx); | |
839 | assert(p > 0); | |
cec736d2 | 840 | |
de190aef LP |
841 | a = le64toh(*first); |
842 | i = hidx = le64toh(*idx); | |
843 | while (a > 0) { | |
844 | ||
845 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); | |
846 | if (r < 0) | |
847 | return r; | |
cec736d2 | 848 | |
de190aef LP |
849 | n = journal_file_entry_array_n_items(o); |
850 | if (i < n) { | |
851 | o->entry_array.items[i] = htole64(p); | |
852 | *idx = htole64(hidx + 1); | |
853 | return 0; | |
854 | } | |
cec736d2 | 855 | |
de190aef LP |
856 | i -= n; |
857 | ap = a; | |
858 | a = le64toh(o->entry_array.next_entry_array_offset); | |
859 | } | |
860 | ||
861 | if (hidx > n) | |
862 | n = (hidx+1) * 2; | |
863 | else | |
864 | n = n * 2; | |
865 | ||
866 | if (n < 4) | |
867 | n = 4; | |
868 | ||
869 | r = journal_file_append_object(f, OBJECT_ENTRY_ARRAY, | |
870 | offsetof(Object, entry_array.items) + n * sizeof(uint64_t), | |
871 | &o, &q); | |
cec736d2 LP |
872 | if (r < 0) |
873 | return r; | |
874 | ||
feb12d3e | 875 | #ifdef HAVE_GCRYPT |
5996c7c2 | 876 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY_ARRAY, o, q); |
b0af6f41 LP |
877 | if (r < 0) |
878 | return r; | |
feb12d3e | 879 | #endif |
b0af6f41 | 880 | |
de190aef | 881 | o->entry_array.items[i] = htole64(p); |
cec736d2 | 882 | |
de190aef | 883 | if (ap == 0) |
7be3aa17 | 884 | *first = htole64(q); |
cec736d2 | 885 | else { |
de190aef | 886 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, ap, &o); |
cec736d2 LP |
887 | if (r < 0) |
888 | return r; | |
889 | ||
de190aef LP |
890 | o->entry_array.next_entry_array_offset = htole64(q); |
891 | } | |
cec736d2 | 892 | |
2dee23eb LP |
893 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
894 | f->header->n_entry_arrays = htole64(le64toh(f->header->n_entry_arrays) + 1); | |
895 | ||
de190aef LP |
896 | *idx = htole64(hidx + 1); |
897 | ||
898 | return 0; | |
899 | } | |
cec736d2 | 900 | |
de190aef | 901 | static int link_entry_into_array_plus_one(JournalFile *f, |
4fd052ae FC |
902 | le64_t *extra, |
903 | le64_t *first, | |
904 | le64_t *idx, | |
de190aef LP |
905 | uint64_t p) { |
906 | ||
907 | int r; | |
908 | ||
909 | assert(f); | |
910 | assert(extra); | |
911 | assert(first); | |
912 | assert(idx); | |
913 | assert(p > 0); | |
914 | ||
915 | if (*idx == 0) | |
916 | *extra = htole64(p); | |
917 | else { | |
4fd052ae | 918 | le64_t i; |
de190aef | 919 | |
7be3aa17 | 920 | i = htole64(le64toh(*idx) - 1); |
de190aef LP |
921 | r = link_entry_into_array(f, first, &i, p); |
922 | if (r < 0) | |
923 | return r; | |
cec736d2 LP |
924 | } |
925 | ||
de190aef LP |
926 | *idx = htole64(le64toh(*idx) + 1); |
927 | return 0; | |
928 | } | |
929 | ||
930 | static int journal_file_link_entry_item(JournalFile *f, Object *o, uint64_t offset, uint64_t i) { | |
931 | uint64_t p; | |
932 | int r; | |
933 | assert(f); | |
934 | assert(o); | |
935 | assert(offset > 0); | |
936 | ||
937 | p = le64toh(o->entry.items[i].object_offset); | |
938 | if (p == 0) | |
939 | return -EINVAL; | |
940 | ||
941 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
cec736d2 LP |
942 | if (r < 0) |
943 | return r; | |
944 | ||
de190aef LP |
945 | return link_entry_into_array_plus_one(f, |
946 | &o->data.entry_offset, | |
947 | &o->data.entry_array_offset, | |
948 | &o->data.n_entries, | |
949 | offset); | |
cec736d2 LP |
950 | } |
951 | ||
952 | static int journal_file_link_entry(JournalFile *f, Object *o, uint64_t offset) { | |
de190aef | 953 | uint64_t n, i; |
cec736d2 LP |
954 | int r; |
955 | ||
956 | assert(f); | |
957 | assert(o); | |
958 | assert(offset > 0); | |
b588975f LP |
959 | |
960 | if (o->object.type != OBJECT_ENTRY) | |
961 | return -EINVAL; | |
cec736d2 | 962 | |
b788cc23 LP |
963 | __sync_synchronize(); |
964 | ||
cec736d2 | 965 | /* Link up the entry itself */ |
de190aef LP |
966 | r = link_entry_into_array(f, |
967 | &f->header->entry_array_offset, | |
968 | &f->header->n_entries, | |
969 | offset); | |
970 | if (r < 0) | |
971 | return r; | |
cec736d2 | 972 | |
aaf53376 | 973 | /* log_debug("=> %s seqnr=%lu n_entries=%lu", f->path, (unsigned long) o->entry.seqnum, (unsigned long) f->header->n_entries); */ |
cec736d2 | 974 | |
de190aef | 975 | if (f->header->head_entry_realtime == 0) |
0ac38b70 | 976 | f->header->head_entry_realtime = o->entry.realtime; |
cec736d2 | 977 | |
0ac38b70 | 978 | f->header->tail_entry_realtime = o->entry.realtime; |
de190aef LP |
979 | f->header->tail_entry_monotonic = o->entry.monotonic; |
980 | ||
981 | f->tail_entry_monotonic_valid = true; | |
cec736d2 LP |
982 | |
983 | /* Link up the items */ | |
984 | n = journal_file_entry_n_items(o); | |
985 | for (i = 0; i < n; i++) { | |
986 | r = journal_file_link_entry_item(f, o, offset, i); | |
987 | if (r < 0) | |
988 | return r; | |
989 | } | |
990 | ||
cec736d2 LP |
991 | return 0; |
992 | } | |
993 | ||
994 | static int journal_file_append_entry_internal( | |
995 | JournalFile *f, | |
996 | const dual_timestamp *ts, | |
997 | uint64_t xor_hash, | |
998 | const EntryItem items[], unsigned n_items, | |
de190aef | 999 | uint64_t *seqnum, |
cec736d2 LP |
1000 | Object **ret, uint64_t *offset) { |
1001 | uint64_t np; | |
1002 | uint64_t osize; | |
1003 | Object *o; | |
1004 | int r; | |
1005 | ||
1006 | assert(f); | |
1007 | assert(items || n_items == 0); | |
de190aef | 1008 | assert(ts); |
cec736d2 LP |
1009 | |
1010 | osize = offsetof(Object, entry.items) + (n_items * sizeof(EntryItem)); | |
1011 | ||
de190aef | 1012 | r = journal_file_append_object(f, OBJECT_ENTRY, osize, &o, &np); |
cec736d2 LP |
1013 | if (r < 0) |
1014 | return r; | |
1015 | ||
d98cc1f2 | 1016 | o->entry.seqnum = htole64(journal_file_entry_seqnum(f, seqnum)); |
cec736d2 | 1017 | memcpy(o->entry.items, items, n_items * sizeof(EntryItem)); |
de190aef LP |
1018 | o->entry.realtime = htole64(ts->realtime); |
1019 | o->entry.monotonic = htole64(ts->monotonic); | |
cec736d2 LP |
1020 | o->entry.xor_hash = htole64(xor_hash); |
1021 | o->entry.boot_id = f->header->boot_id; | |
1022 | ||
feb12d3e | 1023 | #ifdef HAVE_GCRYPT |
5996c7c2 | 1024 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY, o, np); |
b0af6f41 LP |
1025 | if (r < 0) |
1026 | return r; | |
feb12d3e | 1027 | #endif |
b0af6f41 | 1028 | |
cec736d2 LP |
1029 | r = journal_file_link_entry(f, o, np); |
1030 | if (r < 0) | |
1031 | return r; | |
1032 | ||
1033 | if (ret) | |
1034 | *ret = o; | |
1035 | ||
1036 | if (offset) | |
1037 | *offset = np; | |
1038 | ||
1039 | return 0; | |
1040 | } | |
1041 | ||
cf244689 | 1042 | void journal_file_post_change(JournalFile *f) { |
50f20cfd LP |
1043 | assert(f); |
1044 | ||
1045 | /* inotify() does not receive IN_MODIFY events from file | |
1046 | * accesses done via mmap(). After each access we hence | |
1047 | * trigger IN_MODIFY by truncating the journal file to its | |
1048 | * current size which triggers IN_MODIFY. */ | |
1049 | ||
bc85bfee LP |
1050 | __sync_synchronize(); |
1051 | ||
50f20cfd | 1052 | if (ftruncate(f->fd, f->last_stat.st_size) < 0) |
c5315881 | 1053 | log_error("Failed to truncate file to its own size: %m"); |
50f20cfd LP |
1054 | } |
1055 | ||
1f2da9ec LP |
1056 | static int entry_item_cmp(const void *_a, const void *_b) { |
1057 | const EntryItem *a = _a, *b = _b; | |
1058 | ||
1059 | if (le64toh(a->object_offset) < le64toh(b->object_offset)) | |
1060 | return -1; | |
1061 | if (le64toh(a->object_offset) > le64toh(b->object_offset)) | |
1062 | return 1; | |
1063 | return 0; | |
1064 | } | |
1065 | ||
de190aef | 1066 | 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 |
1067 | unsigned i; |
1068 | EntryItem *items; | |
1069 | int r; | |
1070 | uint64_t xor_hash = 0; | |
de190aef | 1071 | struct dual_timestamp _ts; |
cec736d2 LP |
1072 | |
1073 | assert(f); | |
1074 | assert(iovec || n_iovec == 0); | |
1075 | ||
de190aef LP |
1076 | if (!f->writable) |
1077 | return -EPERM; | |
1078 | ||
1079 | if (!ts) { | |
1080 | dual_timestamp_get(&_ts); | |
1081 | ts = &_ts; | |
1082 | } | |
1083 | ||
1084 | if (f->tail_entry_monotonic_valid && | |
1085 | ts->monotonic < le64toh(f->header->tail_entry_monotonic)) | |
1086 | return -EINVAL; | |
1087 | ||
feb12d3e | 1088 | #ifdef HAVE_GCRYPT |
7560fffc LP |
1089 | r = journal_file_maybe_append_tag(f, ts->realtime); |
1090 | if (r < 0) | |
1091 | return r; | |
feb12d3e | 1092 | #endif |
7560fffc | 1093 | |
64825d3c LP |
1094 | /* alloca() can't take 0, hence let's allocate at least one */ |
1095 | items = alloca(sizeof(EntryItem) * MAX(1, n_iovec)); | |
cec736d2 LP |
1096 | |
1097 | for (i = 0; i < n_iovec; i++) { | |
1098 | uint64_t p; | |
1099 | Object *o; | |
1100 | ||
1101 | r = journal_file_append_data(f, iovec[i].iov_base, iovec[i].iov_len, &o, &p); | |
1102 | if (r < 0) | |
cf244689 | 1103 | return r; |
cec736d2 LP |
1104 | |
1105 | xor_hash ^= le64toh(o->data.hash); | |
1106 | items[i].object_offset = htole64(p); | |
de7b95cd | 1107 | items[i].hash = o->data.hash; |
cec736d2 LP |
1108 | } |
1109 | ||
1f2da9ec LP |
1110 | /* Order by the position on disk, in order to improve seek |
1111 | * times for rotating media. */ | |
1112 | qsort(items, n_iovec, sizeof(EntryItem), entry_item_cmp); | |
1113 | ||
de190aef | 1114 | r = journal_file_append_entry_internal(f, ts, xor_hash, items, n_iovec, seqnum, ret, offset); |
cec736d2 | 1115 | |
50f20cfd LP |
1116 | journal_file_post_change(f); |
1117 | ||
cec736d2 LP |
1118 | return r; |
1119 | } | |
1120 | ||
de190aef LP |
1121 | static int generic_array_get(JournalFile *f, |
1122 | uint64_t first, | |
1123 | uint64_t i, | |
1124 | Object **ret, uint64_t *offset) { | |
1125 | ||
cec736d2 | 1126 | Object *o; |
6c8a39b8 | 1127 | uint64_t p = 0, a; |
cec736d2 LP |
1128 | int r; |
1129 | ||
1130 | assert(f); | |
1131 | ||
de190aef LP |
1132 | a = first; |
1133 | while (a > 0) { | |
1134 | uint64_t n; | |
cec736d2 | 1135 | |
de190aef LP |
1136 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); |
1137 | if (r < 0) | |
1138 | return r; | |
cec736d2 | 1139 | |
de190aef LP |
1140 | n = journal_file_entry_array_n_items(o); |
1141 | if (i < n) { | |
1142 | p = le64toh(o->entry_array.items[i]); | |
1143 | break; | |
cec736d2 LP |
1144 | } |
1145 | ||
de190aef LP |
1146 | i -= n; |
1147 | a = le64toh(o->entry_array.next_entry_array_offset); | |
1148 | } | |
1149 | ||
1150 | if (a <= 0 || p <= 0) | |
1151 | return 0; | |
1152 | ||
1153 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1154 | if (r < 0) | |
1155 | return r; | |
1156 | ||
1157 | if (ret) | |
1158 | *ret = o; | |
1159 | ||
1160 | if (offset) | |
1161 | *offset = p; | |
1162 | ||
1163 | return 1; | |
1164 | } | |
1165 | ||
1166 | static int generic_array_get_plus_one(JournalFile *f, | |
1167 | uint64_t extra, | |
1168 | uint64_t first, | |
1169 | uint64_t i, | |
1170 | Object **ret, uint64_t *offset) { | |
1171 | ||
1172 | Object *o; | |
1173 | ||
1174 | assert(f); | |
1175 | ||
1176 | if (i == 0) { | |
1177 | int r; | |
1178 | ||
1179 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
cec736d2 LP |
1180 | if (r < 0) |
1181 | return r; | |
1182 | ||
de190aef LP |
1183 | if (ret) |
1184 | *ret = o; | |
cec736d2 | 1185 | |
de190aef LP |
1186 | if (offset) |
1187 | *offset = extra; | |
cec736d2 | 1188 | |
de190aef | 1189 | return 1; |
cec736d2 LP |
1190 | } |
1191 | ||
de190aef LP |
1192 | return generic_array_get(f, first, i-1, ret, offset); |
1193 | } | |
cec736d2 | 1194 | |
de190aef LP |
1195 | enum { |
1196 | TEST_FOUND, | |
1197 | TEST_LEFT, | |
1198 | TEST_RIGHT | |
1199 | }; | |
cec736d2 | 1200 | |
de190aef LP |
1201 | static int generic_array_bisect(JournalFile *f, |
1202 | uint64_t first, | |
1203 | uint64_t n, | |
1204 | uint64_t needle, | |
1205 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1206 | direction_t direction, | |
1207 | Object **ret, | |
1208 | uint64_t *offset, | |
1209 | uint64_t *idx) { | |
1210 | ||
1211 | uint64_t a, p, t = 0, i = 0, last_p = 0; | |
1212 | bool subtract_one = false; | |
1213 | Object *o, *array = NULL; | |
1214 | int r; | |
cec736d2 | 1215 | |
de190aef LP |
1216 | assert(f); |
1217 | assert(test_object); | |
cec736d2 | 1218 | |
de190aef LP |
1219 | a = first; |
1220 | while (a > 0) { | |
1221 | uint64_t left, right, k, lp; | |
1222 | ||
1223 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &array); | |
cec736d2 LP |
1224 | if (r < 0) |
1225 | return r; | |
1226 | ||
de190aef LP |
1227 | k = journal_file_entry_array_n_items(array); |
1228 | right = MIN(k, n); | |
1229 | if (right <= 0) | |
1230 | return 0; | |
cec736d2 | 1231 | |
de190aef LP |
1232 | i = right - 1; |
1233 | lp = p = le64toh(array->entry_array.items[i]); | |
1234 | if (p <= 0) | |
1235 | return -EBADMSG; | |
cec736d2 | 1236 | |
de190aef LP |
1237 | r = test_object(f, p, needle); |
1238 | if (r < 0) | |
1239 | return r; | |
cec736d2 | 1240 | |
de190aef LP |
1241 | if (r == TEST_FOUND) |
1242 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1243 | ||
1244 | if (r == TEST_RIGHT) { | |
1245 | left = 0; | |
1246 | right -= 1; | |
1247 | for (;;) { | |
1248 | if (left == right) { | |
1249 | if (direction == DIRECTION_UP) | |
1250 | subtract_one = true; | |
1251 | ||
1252 | i = left; | |
1253 | goto found; | |
1254 | } | |
1255 | ||
1256 | assert(left < right); | |
1257 | ||
1258 | i = (left + right) / 2; | |
1259 | p = le64toh(array->entry_array.items[i]); | |
1260 | if (p <= 0) | |
1261 | return -EBADMSG; | |
1262 | ||
1263 | r = test_object(f, p, needle); | |
1264 | if (r < 0) | |
1265 | return r; | |
cec736d2 | 1266 | |
de190aef LP |
1267 | if (r == TEST_FOUND) |
1268 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1269 | ||
1270 | if (r == TEST_RIGHT) | |
1271 | right = i; | |
1272 | else | |
1273 | left = i + 1; | |
1274 | } | |
1275 | } | |
1276 | ||
cbdca852 LP |
1277 | if (k > n) { |
1278 | if (direction == DIRECTION_UP) { | |
1279 | i = n; | |
1280 | subtract_one = true; | |
1281 | goto found; | |
1282 | } | |
1283 | ||
cec736d2 | 1284 | return 0; |
cbdca852 | 1285 | } |
cec736d2 | 1286 | |
de190aef LP |
1287 | last_p = lp; |
1288 | ||
1289 | n -= k; | |
1290 | t += k; | |
1291 | a = le64toh(array->entry_array.next_entry_array_offset); | |
cec736d2 LP |
1292 | } |
1293 | ||
1294 | return 0; | |
de190aef LP |
1295 | |
1296 | found: | |
1297 | if (subtract_one && t == 0 && i == 0) | |
1298 | return 0; | |
1299 | ||
1300 | if (subtract_one && i == 0) | |
1301 | p = last_p; | |
1302 | else if (subtract_one) | |
1303 | p = le64toh(array->entry_array.items[i-1]); | |
1304 | else | |
1305 | p = le64toh(array->entry_array.items[i]); | |
1306 | ||
1307 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1308 | if (r < 0) | |
1309 | return r; | |
1310 | ||
1311 | if (ret) | |
1312 | *ret = o; | |
1313 | ||
1314 | if (offset) | |
1315 | *offset = p; | |
1316 | ||
1317 | if (idx) | |
cbdca852 | 1318 | *idx = t + i + (subtract_one ? -1 : 0); |
de190aef LP |
1319 | |
1320 | return 1; | |
cec736d2 LP |
1321 | } |
1322 | ||
de190aef LP |
1323 | static int generic_array_bisect_plus_one(JournalFile *f, |
1324 | uint64_t extra, | |
1325 | uint64_t first, | |
1326 | uint64_t n, | |
1327 | uint64_t needle, | |
1328 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1329 | direction_t direction, | |
1330 | Object **ret, | |
1331 | uint64_t *offset, | |
1332 | uint64_t *idx) { | |
1333 | ||
cec736d2 | 1334 | int r; |
cbdca852 LP |
1335 | bool step_back = false; |
1336 | Object *o; | |
cec736d2 LP |
1337 | |
1338 | assert(f); | |
de190aef | 1339 | assert(test_object); |
cec736d2 | 1340 | |
de190aef LP |
1341 | if (n <= 0) |
1342 | return 0; | |
cec736d2 | 1343 | |
de190aef LP |
1344 | /* This bisects the array in object 'first', but first checks |
1345 | * an extra */ | |
de190aef LP |
1346 | r = test_object(f, extra, needle); |
1347 | if (r < 0) | |
1348 | return r; | |
a536e261 LP |
1349 | |
1350 | if (r == TEST_FOUND) | |
1351 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1352 | ||
cbdca852 LP |
1353 | /* if we are looking with DIRECTION_UP then we need to first |
1354 | see if in the actual array there is a matching entry, and | |
1355 | return the last one of that. But if there isn't any we need | |
1356 | to return this one. Hence remember this, and return it | |
1357 | below. */ | |
1358 | if (r == TEST_LEFT) | |
1359 | step_back = direction == DIRECTION_UP; | |
de190aef | 1360 | |
cbdca852 LP |
1361 | if (r == TEST_RIGHT) { |
1362 | if (direction == DIRECTION_DOWN) | |
1363 | goto found; | |
1364 | else | |
1365 | return 0; | |
a536e261 | 1366 | } |
cec736d2 | 1367 | |
de190aef LP |
1368 | r = generic_array_bisect(f, first, n-1, needle, test_object, direction, ret, offset, idx); |
1369 | ||
cbdca852 LP |
1370 | if (r == 0 && step_back) |
1371 | goto found; | |
1372 | ||
ecf68b1d | 1373 | if (r > 0 && idx) |
de190aef LP |
1374 | (*idx) ++; |
1375 | ||
1376 | return r; | |
cbdca852 LP |
1377 | |
1378 | found: | |
1379 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
1380 | if (r < 0) | |
1381 | return r; | |
1382 | ||
1383 | if (ret) | |
1384 | *ret = o; | |
1385 | ||
1386 | if (offset) | |
1387 | *offset = extra; | |
1388 | ||
1389 | if (idx) | |
1390 | *idx = 0; | |
1391 | ||
1392 | return 1; | |
1393 | } | |
1394 | ||
1395 | static int test_object_offset(JournalFile *f, uint64_t p, uint64_t needle) { | |
1396 | assert(f); | |
1397 | assert(p > 0); | |
1398 | ||
1399 | if (p == needle) | |
1400 | return TEST_FOUND; | |
1401 | else if (p < needle) | |
1402 | return TEST_LEFT; | |
1403 | else | |
1404 | return TEST_RIGHT; | |
1405 | } | |
1406 | ||
1407 | int journal_file_move_to_entry_by_offset( | |
1408 | JournalFile *f, | |
1409 | uint64_t p, | |
1410 | direction_t direction, | |
1411 | Object **ret, | |
1412 | uint64_t *offset) { | |
1413 | ||
1414 | return generic_array_bisect(f, | |
1415 | le64toh(f->header->entry_array_offset), | |
1416 | le64toh(f->header->n_entries), | |
1417 | p, | |
1418 | test_object_offset, | |
1419 | direction, | |
1420 | ret, offset, NULL); | |
de190aef LP |
1421 | } |
1422 | ||
cbdca852 | 1423 | |
de190aef LP |
1424 | static int test_object_seqnum(JournalFile *f, uint64_t p, uint64_t needle) { |
1425 | Object *o; | |
1426 | int r; | |
1427 | ||
1428 | assert(f); | |
1429 | assert(p > 0); | |
1430 | ||
1431 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
cec736d2 LP |
1432 | if (r < 0) |
1433 | return r; | |
1434 | ||
de190aef LP |
1435 | if (le64toh(o->entry.seqnum) == needle) |
1436 | return TEST_FOUND; | |
1437 | else if (le64toh(o->entry.seqnum) < needle) | |
1438 | return TEST_LEFT; | |
1439 | else | |
1440 | return TEST_RIGHT; | |
1441 | } | |
cec736d2 | 1442 | |
de190aef LP |
1443 | int journal_file_move_to_entry_by_seqnum( |
1444 | JournalFile *f, | |
1445 | uint64_t seqnum, | |
1446 | direction_t direction, | |
1447 | Object **ret, | |
1448 | uint64_t *offset) { | |
1449 | ||
1450 | return generic_array_bisect(f, | |
1451 | le64toh(f->header->entry_array_offset), | |
1452 | le64toh(f->header->n_entries), | |
1453 | seqnum, | |
1454 | test_object_seqnum, | |
1455 | direction, | |
1456 | ret, offset, NULL); | |
1457 | } | |
cec736d2 | 1458 | |
de190aef LP |
1459 | static int test_object_realtime(JournalFile *f, uint64_t p, uint64_t needle) { |
1460 | Object *o; | |
1461 | int r; | |
1462 | ||
1463 | assert(f); | |
1464 | assert(p > 0); | |
1465 | ||
1466 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1467 | if (r < 0) | |
1468 | return r; | |
1469 | ||
1470 | if (le64toh(o->entry.realtime) == needle) | |
1471 | return TEST_FOUND; | |
1472 | else if (le64toh(o->entry.realtime) < needle) | |
1473 | return TEST_LEFT; | |
1474 | else | |
1475 | return TEST_RIGHT; | |
cec736d2 LP |
1476 | } |
1477 | ||
de190aef LP |
1478 | int journal_file_move_to_entry_by_realtime( |
1479 | JournalFile *f, | |
1480 | uint64_t realtime, | |
1481 | direction_t direction, | |
1482 | Object **ret, | |
1483 | uint64_t *offset) { | |
1484 | ||
1485 | return generic_array_bisect(f, | |
1486 | le64toh(f->header->entry_array_offset), | |
1487 | le64toh(f->header->n_entries), | |
1488 | realtime, | |
1489 | test_object_realtime, | |
1490 | direction, | |
1491 | ret, offset, NULL); | |
1492 | } | |
1493 | ||
1494 | static int test_object_monotonic(JournalFile *f, uint64_t p, uint64_t needle) { | |
1495 | Object *o; | |
1496 | int r; | |
1497 | ||
1498 | assert(f); | |
1499 | assert(p > 0); | |
1500 | ||
1501 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1502 | if (r < 0) | |
1503 | return r; | |
1504 | ||
1505 | if (le64toh(o->entry.monotonic) == needle) | |
1506 | return TEST_FOUND; | |
1507 | else if (le64toh(o->entry.monotonic) < needle) | |
1508 | return TEST_LEFT; | |
1509 | else | |
1510 | return TEST_RIGHT; | |
1511 | } | |
1512 | ||
1513 | int journal_file_move_to_entry_by_monotonic( | |
1514 | JournalFile *f, | |
1515 | sd_id128_t boot_id, | |
1516 | uint64_t monotonic, | |
1517 | direction_t direction, | |
1518 | Object **ret, | |
1519 | uint64_t *offset) { | |
1520 | ||
10b6f904 | 1521 | char t[9+32+1] = "_BOOT_ID="; |
de190aef LP |
1522 | Object *o; |
1523 | int r; | |
1524 | ||
cbdca852 | 1525 | assert(f); |
de190aef | 1526 | |
cbdca852 | 1527 | sd_id128_to_string(boot_id, t + 9); |
de190aef LP |
1528 | r = journal_file_find_data_object(f, t, strlen(t), &o, NULL); |
1529 | if (r < 0) | |
1530 | return r; | |
cbdca852 | 1531 | if (r == 0) |
de190aef LP |
1532 | return -ENOENT; |
1533 | ||
1534 | return generic_array_bisect_plus_one(f, | |
1535 | le64toh(o->data.entry_offset), | |
1536 | le64toh(o->data.entry_array_offset), | |
1537 | le64toh(o->data.n_entries), | |
1538 | monotonic, | |
1539 | test_object_monotonic, | |
1540 | direction, | |
1541 | ret, offset, NULL); | |
1542 | } | |
1543 | ||
de190aef LP |
1544 | int journal_file_next_entry( |
1545 | JournalFile *f, | |
1546 | Object *o, uint64_t p, | |
1547 | direction_t direction, | |
1548 | Object **ret, uint64_t *offset) { | |
1549 | ||
1550 | uint64_t i, n; | |
cec736d2 LP |
1551 | int r; |
1552 | ||
1553 | assert(f); | |
de190aef LP |
1554 | assert(p > 0 || !o); |
1555 | ||
1556 | n = le64toh(f->header->n_entries); | |
1557 | if (n <= 0) | |
1558 | return 0; | |
cec736d2 LP |
1559 | |
1560 | if (!o) | |
de190aef | 1561 | i = direction == DIRECTION_DOWN ? 0 : n - 1; |
cec736d2 | 1562 | else { |
de190aef | 1563 | if (o->object.type != OBJECT_ENTRY) |
cec736d2 LP |
1564 | return -EINVAL; |
1565 | ||
de190aef LP |
1566 | r = generic_array_bisect(f, |
1567 | le64toh(f->header->entry_array_offset), | |
1568 | le64toh(f->header->n_entries), | |
1569 | p, | |
1570 | test_object_offset, | |
1571 | DIRECTION_DOWN, | |
1572 | NULL, NULL, | |
1573 | &i); | |
1574 | if (r <= 0) | |
1575 | return r; | |
1576 | ||
1577 | if (direction == DIRECTION_DOWN) { | |
1578 | if (i >= n - 1) | |
1579 | return 0; | |
1580 | ||
1581 | i++; | |
1582 | } else { | |
1583 | if (i <= 0) | |
1584 | return 0; | |
1585 | ||
1586 | i--; | |
1587 | } | |
cec736d2 LP |
1588 | } |
1589 | ||
de190aef LP |
1590 | /* And jump to it */ |
1591 | return generic_array_get(f, | |
1592 | le64toh(f->header->entry_array_offset), | |
1593 | i, | |
1594 | ret, offset); | |
1595 | } | |
cec736d2 | 1596 | |
de190aef LP |
1597 | int journal_file_skip_entry( |
1598 | JournalFile *f, | |
1599 | Object *o, uint64_t p, | |
1600 | int64_t skip, | |
1601 | Object **ret, uint64_t *offset) { | |
1602 | ||
1603 | uint64_t i, n; | |
1604 | int r; | |
1605 | ||
1606 | assert(f); | |
1607 | assert(o); | |
1608 | assert(p > 0); | |
1609 | ||
1610 | if (o->object.type != OBJECT_ENTRY) | |
1611 | return -EINVAL; | |
1612 | ||
1613 | r = generic_array_bisect(f, | |
1614 | le64toh(f->header->entry_array_offset), | |
1615 | le64toh(f->header->n_entries), | |
1616 | p, | |
1617 | test_object_offset, | |
1618 | DIRECTION_DOWN, | |
1619 | NULL, NULL, | |
1620 | &i); | |
1621 | if (r <= 0) | |
cec736d2 LP |
1622 | return r; |
1623 | ||
de190aef LP |
1624 | /* Calculate new index */ |
1625 | if (skip < 0) { | |
1626 | if ((uint64_t) -skip >= i) | |
1627 | i = 0; | |
1628 | else | |
1629 | i = i - (uint64_t) -skip; | |
1630 | } else | |
1631 | i += (uint64_t) skip; | |
cec736d2 | 1632 | |
de190aef LP |
1633 | n = le64toh(f->header->n_entries); |
1634 | if (n <= 0) | |
1635 | return -EBADMSG; | |
cec736d2 | 1636 | |
de190aef LP |
1637 | if (i >= n) |
1638 | i = n-1; | |
1639 | ||
1640 | return generic_array_get(f, | |
1641 | le64toh(f->header->entry_array_offset), | |
1642 | i, | |
1643 | ret, offset); | |
cec736d2 LP |
1644 | } |
1645 | ||
de190aef LP |
1646 | int journal_file_next_entry_for_data( |
1647 | JournalFile *f, | |
1648 | Object *o, uint64_t p, | |
1649 | uint64_t data_offset, | |
1650 | direction_t direction, | |
1651 | Object **ret, uint64_t *offset) { | |
1652 | ||
1653 | uint64_t n, i; | |
cec736d2 | 1654 | int r; |
de190aef | 1655 | Object *d; |
cec736d2 LP |
1656 | |
1657 | assert(f); | |
de190aef | 1658 | assert(p > 0 || !o); |
cec736d2 | 1659 | |
de190aef | 1660 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
466ccd92 | 1661 | if (r < 0) |
de190aef | 1662 | return r; |
cec736d2 | 1663 | |
de190aef LP |
1664 | n = le64toh(d->data.n_entries); |
1665 | if (n <= 0) | |
1666 | return n; | |
cec736d2 | 1667 | |
de190aef LP |
1668 | if (!o) |
1669 | i = direction == DIRECTION_DOWN ? 0 : n - 1; | |
1670 | else { | |
1671 | if (o->object.type != OBJECT_ENTRY) | |
1672 | return -EINVAL; | |
cec736d2 | 1673 | |
de190aef LP |
1674 | r = generic_array_bisect_plus_one(f, |
1675 | le64toh(d->data.entry_offset), | |
1676 | le64toh(d->data.entry_array_offset), | |
1677 | le64toh(d->data.n_entries), | |
1678 | p, | |
1679 | test_object_offset, | |
1680 | DIRECTION_DOWN, | |
1681 | NULL, NULL, | |
1682 | &i); | |
1683 | ||
1684 | if (r <= 0) | |
cec736d2 LP |
1685 | return r; |
1686 | ||
de190aef LP |
1687 | if (direction == DIRECTION_DOWN) { |
1688 | if (i >= n - 1) | |
1689 | return 0; | |
cec736d2 | 1690 | |
de190aef LP |
1691 | i++; |
1692 | } else { | |
1693 | if (i <= 0) | |
1694 | return 0; | |
cec736d2 | 1695 | |
de190aef LP |
1696 | i--; |
1697 | } | |
cec736d2 | 1698 | |
de190aef | 1699 | } |
cec736d2 | 1700 | |
de190aef LP |
1701 | return generic_array_get_plus_one(f, |
1702 | le64toh(d->data.entry_offset), | |
1703 | le64toh(d->data.entry_array_offset), | |
1704 | i, | |
1705 | ret, offset); | |
1706 | } | |
cec736d2 | 1707 | |
cbdca852 LP |
1708 | int journal_file_move_to_entry_by_offset_for_data( |
1709 | JournalFile *f, | |
1710 | uint64_t data_offset, | |
1711 | uint64_t p, | |
1712 | direction_t direction, | |
1713 | Object **ret, uint64_t *offset) { | |
1714 | ||
1715 | int r; | |
1716 | Object *d; | |
1717 | ||
1718 | assert(f); | |
1719 | ||
1720 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1721 | if (r < 0) | |
1722 | return r; | |
1723 | ||
1724 | return generic_array_bisect_plus_one(f, | |
1725 | le64toh(d->data.entry_offset), | |
1726 | le64toh(d->data.entry_array_offset), | |
1727 | le64toh(d->data.n_entries), | |
1728 | p, | |
1729 | test_object_offset, | |
1730 | direction, | |
1731 | ret, offset, NULL); | |
1732 | } | |
1733 | ||
1734 | int journal_file_move_to_entry_by_monotonic_for_data( | |
1735 | JournalFile *f, | |
1736 | uint64_t data_offset, | |
1737 | sd_id128_t boot_id, | |
1738 | uint64_t monotonic, | |
1739 | direction_t direction, | |
1740 | Object **ret, uint64_t *offset) { | |
1741 | ||
1742 | char t[9+32+1] = "_BOOT_ID="; | |
1743 | Object *o, *d; | |
1744 | int r; | |
1745 | uint64_t b, z; | |
1746 | ||
1747 | assert(f); | |
1748 | ||
1749 | /* First, seek by time */ | |
1750 | sd_id128_to_string(boot_id, t + 9); | |
1751 | r = journal_file_find_data_object(f, t, strlen(t), &o, &b); | |
1752 | if (r < 0) | |
1753 | return r; | |
1754 | if (r == 0) | |
1755 | return -ENOENT; | |
1756 | ||
1757 | r = generic_array_bisect_plus_one(f, | |
1758 | le64toh(o->data.entry_offset), | |
1759 | le64toh(o->data.entry_array_offset), | |
1760 | le64toh(o->data.n_entries), | |
1761 | monotonic, | |
1762 | test_object_monotonic, | |
1763 | direction, | |
1764 | NULL, &z, NULL); | |
1765 | if (r <= 0) | |
1766 | return r; | |
1767 | ||
1768 | /* And now, continue seeking until we find an entry that | |
1769 | * exists in both bisection arrays */ | |
1770 | ||
1771 | for (;;) { | |
1772 | Object *qo; | |
1773 | uint64_t p, q; | |
1774 | ||
1775 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1776 | if (r < 0) | |
1777 | return r; | |
1778 | ||
1779 | r = generic_array_bisect_plus_one(f, | |
1780 | le64toh(d->data.entry_offset), | |
1781 | le64toh(d->data.entry_array_offset), | |
1782 | le64toh(d->data.n_entries), | |
1783 | z, | |
1784 | test_object_offset, | |
1785 | direction, | |
1786 | NULL, &p, NULL); | |
1787 | if (r <= 0) | |
1788 | return r; | |
1789 | ||
1790 | r = journal_file_move_to_object(f, OBJECT_DATA, b, &o); | |
1791 | if (r < 0) | |
1792 | return r; | |
1793 | ||
1794 | r = generic_array_bisect_plus_one(f, | |
1795 | le64toh(o->data.entry_offset), | |
1796 | le64toh(o->data.entry_array_offset), | |
1797 | le64toh(o->data.n_entries), | |
1798 | p, | |
1799 | test_object_offset, | |
1800 | direction, | |
1801 | &qo, &q, NULL); | |
1802 | ||
1803 | if (r <= 0) | |
1804 | return r; | |
1805 | ||
1806 | if (p == q) { | |
1807 | if (ret) | |
1808 | *ret = qo; | |
1809 | if (offset) | |
1810 | *offset = q; | |
1811 | ||
1812 | return 1; | |
1813 | } | |
1814 | ||
1815 | z = q; | |
1816 | } | |
1817 | ||
1818 | return 0; | |
1819 | } | |
1820 | ||
de190aef LP |
1821 | int journal_file_move_to_entry_by_seqnum_for_data( |
1822 | JournalFile *f, | |
1823 | uint64_t data_offset, | |
1824 | uint64_t seqnum, | |
1825 | direction_t direction, | |
1826 | Object **ret, uint64_t *offset) { | |
cec736d2 | 1827 | |
de190aef LP |
1828 | Object *d; |
1829 | int r; | |
cec736d2 | 1830 | |
91a31dde LP |
1831 | assert(f); |
1832 | ||
de190aef | 1833 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 1834 | if (r < 0) |
de190aef | 1835 | return r; |
cec736d2 | 1836 | |
de190aef LP |
1837 | return generic_array_bisect_plus_one(f, |
1838 | le64toh(d->data.entry_offset), | |
1839 | le64toh(d->data.entry_array_offset), | |
1840 | le64toh(d->data.n_entries), | |
1841 | seqnum, | |
1842 | test_object_seqnum, | |
1843 | direction, | |
1844 | ret, offset, NULL); | |
1845 | } | |
cec736d2 | 1846 | |
de190aef LP |
1847 | int journal_file_move_to_entry_by_realtime_for_data( |
1848 | JournalFile *f, | |
1849 | uint64_t data_offset, | |
1850 | uint64_t realtime, | |
1851 | direction_t direction, | |
1852 | Object **ret, uint64_t *offset) { | |
1853 | ||
1854 | Object *d; | |
1855 | int r; | |
1856 | ||
91a31dde LP |
1857 | assert(f); |
1858 | ||
de190aef | 1859 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 1860 | if (r < 0) |
de190aef LP |
1861 | return r; |
1862 | ||
1863 | return generic_array_bisect_plus_one(f, | |
1864 | le64toh(d->data.entry_offset), | |
1865 | le64toh(d->data.entry_array_offset), | |
1866 | le64toh(d->data.n_entries), | |
1867 | realtime, | |
1868 | test_object_realtime, | |
1869 | direction, | |
1870 | ret, offset, NULL); | |
cec736d2 LP |
1871 | } |
1872 | ||
0284adc6 | 1873 | void journal_file_dump(JournalFile *f) { |
7560fffc | 1874 | Object *o; |
7560fffc | 1875 | int r; |
0284adc6 | 1876 | uint64_t p; |
7560fffc LP |
1877 | |
1878 | assert(f); | |
1879 | ||
0284adc6 | 1880 | journal_file_print_header(f); |
7560fffc | 1881 | |
0284adc6 LP |
1882 | p = le64toh(f->header->header_size); |
1883 | while (p != 0) { | |
1884 | r = journal_file_move_to_object(f, -1, p, &o); | |
1885 | if (r < 0) | |
1886 | goto fail; | |
7560fffc | 1887 | |
0284adc6 | 1888 | switch (o->object.type) { |
d98cc1f2 | 1889 | |
0284adc6 LP |
1890 | case OBJECT_UNUSED: |
1891 | printf("Type: OBJECT_UNUSED\n"); | |
1892 | break; | |
d98cc1f2 | 1893 | |
0284adc6 LP |
1894 | case OBJECT_DATA: |
1895 | printf("Type: OBJECT_DATA\n"); | |
1896 | break; | |
7560fffc | 1897 | |
0284adc6 | 1898 | case OBJECT_ENTRY: |
f7fab8a5 | 1899 | printf("Type: OBJECT_ENTRY seqnum=%llu monotonic=%llu realtime=%llu\n", |
0284adc6 LP |
1900 | (unsigned long long) le64toh(o->entry.seqnum), |
1901 | (unsigned long long) le64toh(o->entry.monotonic), | |
1902 | (unsigned long long) le64toh(o->entry.realtime)); | |
1903 | break; | |
7560fffc | 1904 | |
0284adc6 LP |
1905 | case OBJECT_FIELD_HASH_TABLE: |
1906 | printf("Type: OBJECT_FIELD_HASH_TABLE\n"); | |
1907 | break; | |
7560fffc | 1908 | |
0284adc6 LP |
1909 | case OBJECT_DATA_HASH_TABLE: |
1910 | printf("Type: OBJECT_DATA_HASH_TABLE\n"); | |
1911 | break; | |
7560fffc | 1912 | |
0284adc6 LP |
1913 | case OBJECT_ENTRY_ARRAY: |
1914 | printf("Type: OBJECT_ENTRY_ARRAY\n"); | |
1915 | break; | |
7560fffc | 1916 | |
0284adc6 | 1917 | case OBJECT_TAG: |
f7fab8a5 LP |
1918 | printf("Type: OBJECT_TAG seqnum=%llu epoch=%llu\n", |
1919 | (unsigned long long) le64toh(o->tag.seqnum), | |
1920 | (unsigned long long) le64toh(o->tag.epoch)); | |
0284adc6 LP |
1921 | break; |
1922 | } | |
7560fffc | 1923 | |
0284adc6 LP |
1924 | if (o->object.flags & OBJECT_COMPRESSED) |
1925 | printf("Flags: COMPRESSED\n"); | |
7560fffc | 1926 | |
0284adc6 LP |
1927 | if (p == le64toh(f->header->tail_object_offset)) |
1928 | p = 0; | |
1929 | else | |
1930 | p = p + ALIGN64(le64toh(o->object.size)); | |
1931 | } | |
7560fffc | 1932 | |
0284adc6 LP |
1933 | return; |
1934 | fail: | |
1935 | log_error("File corrupt"); | |
7560fffc LP |
1936 | } |
1937 | ||
0284adc6 LP |
1938 | void journal_file_print_header(JournalFile *f) { |
1939 | char a[33], b[33], c[33]; | |
1940 | char x[FORMAT_TIMESTAMP_MAX], y[FORMAT_TIMESTAMP_MAX]; | |
a1a03e30 LP |
1941 | struct stat st; |
1942 | char bytes[FORMAT_BYTES_MAX]; | |
7560fffc LP |
1943 | |
1944 | assert(f); | |
7560fffc | 1945 | |
0284adc6 LP |
1946 | printf("File Path: %s\n" |
1947 | "File ID: %s\n" | |
1948 | "Machine ID: %s\n" | |
1949 | "Boot ID: %s\n" | |
1950 | "Sequential Number ID: %s\n" | |
1951 | "State: %s\n" | |
1952 | "Compatible Flags:%s%s\n" | |
1953 | "Incompatible Flags:%s%s\n" | |
1954 | "Header size: %llu\n" | |
1955 | "Arena size: %llu\n" | |
1956 | "Data Hash Table Size: %llu\n" | |
1957 | "Field Hash Table Size: %llu\n" | |
0284adc6 LP |
1958 | "Rotate Suggested: %s\n" |
1959 | "Head Sequential Number: %llu\n" | |
1960 | "Tail Sequential Number: %llu\n" | |
1961 | "Head Realtime Timestamp: %s\n" | |
3223f44f LP |
1962 | "Tail Realtime Timestamp: %s\n" |
1963 | "Objects: %llu\n" | |
1964 | "Entry Objects: %llu\n", | |
0284adc6 LP |
1965 | f->path, |
1966 | sd_id128_to_string(f->header->file_id, a), | |
1967 | sd_id128_to_string(f->header->machine_id, b), | |
1968 | sd_id128_to_string(f->header->boot_id, c), | |
1969 | sd_id128_to_string(f->header->seqnum_id, c), | |
3223f44f LP |
1970 | f->header->state == STATE_OFFLINE ? "OFFLINE" : |
1971 | f->header->state == STATE_ONLINE ? "ONLINE" : | |
1972 | f->header->state == STATE_ARCHIVED ? "ARCHIVED" : "UNKNOWN", | |
8088cbd3 LP |
1973 | JOURNAL_HEADER_SEALED(f->header) ? " SEALED" : "", |
1974 | (le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) ? " ???" : "", | |
1975 | JOURNAL_HEADER_COMPRESSED(f->header) ? " COMPRESSED" : "", | |
1976 | (le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) ? " ???" : "", | |
0284adc6 LP |
1977 | (unsigned long long) le64toh(f->header->header_size), |
1978 | (unsigned long long) le64toh(f->header->arena_size), | |
1979 | (unsigned long long) le64toh(f->header->data_hash_table_size) / sizeof(HashItem), | |
1980 | (unsigned long long) le64toh(f->header->field_hash_table_size) / sizeof(HashItem), | |
0284adc6 LP |
1981 | yes_no(journal_file_rotate_suggested(f)), |
1982 | (unsigned long long) le64toh(f->header->head_entry_seqnum), | |
1983 | (unsigned long long) le64toh(f->header->tail_entry_seqnum), | |
1984 | format_timestamp(x, sizeof(x), le64toh(f->header->head_entry_realtime)), | |
3223f44f LP |
1985 | format_timestamp(y, sizeof(y), le64toh(f->header->tail_entry_realtime)), |
1986 | (unsigned long long) le64toh(f->header->n_objects), | |
1987 | (unsigned long long) le64toh(f->header->n_entries)); | |
7560fffc | 1988 | |
0284adc6 LP |
1989 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
1990 | printf("Data Objects: %llu\n" | |
1991 | "Data Hash Table Fill: %.1f%%\n", | |
1992 | (unsigned long long) le64toh(f->header->n_data), | |
1993 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)))); | |
7560fffc | 1994 | |
0284adc6 LP |
1995 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) |
1996 | printf("Field Objects: %llu\n" | |
1997 | "Field Hash Table Fill: %.1f%%\n", | |
1998 | (unsigned long long) le64toh(f->header->n_fields), | |
1999 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)))); | |
3223f44f LP |
2000 | |
2001 | if (JOURNAL_HEADER_CONTAINS(f->header, n_tags)) | |
2002 | printf("Tag Objects: %llu\n", | |
2003 | (unsigned long long) le64toh(f->header->n_tags)); | |
2004 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) | |
2005 | printf("Entry Array Objects: %llu\n", | |
2006 | (unsigned long long) le64toh(f->header->n_entry_arrays)); | |
a1a03e30 LP |
2007 | |
2008 | if (fstat(f->fd, &st) >= 0) | |
2009 | printf("Disk usage: %s\n", format_bytes(bytes, sizeof(bytes), (off_t) st.st_blocks * 512ULL)); | |
7560fffc LP |
2010 | } |
2011 | ||
0284adc6 LP |
2012 | int journal_file_open( |
2013 | const char *fname, | |
2014 | int flags, | |
2015 | mode_t mode, | |
2016 | bool compress, | |
baed47c3 | 2017 | bool seal, |
0284adc6 LP |
2018 | JournalMetrics *metrics, |
2019 | MMapCache *mmap_cache, | |
2020 | JournalFile *template, | |
2021 | JournalFile **ret) { | |
7560fffc | 2022 | |
0284adc6 LP |
2023 | JournalFile *f; |
2024 | int r; | |
2025 | bool newly_created = false; | |
7560fffc | 2026 | |
0284adc6 | 2027 | assert(fname); |
0559d3a5 | 2028 | assert(ret); |
7560fffc | 2029 | |
0284adc6 LP |
2030 | if ((flags & O_ACCMODE) != O_RDONLY && |
2031 | (flags & O_ACCMODE) != O_RDWR) | |
2032 | return -EINVAL; | |
7560fffc | 2033 | |
a0108012 LP |
2034 | if (!endswith(fname, ".journal") && |
2035 | !endswith(fname, ".journal~")) | |
0284adc6 | 2036 | return -EINVAL; |
7560fffc | 2037 | |
0284adc6 LP |
2038 | f = new0(JournalFile, 1); |
2039 | if (!f) | |
2040 | return -ENOMEM; | |
7560fffc | 2041 | |
0284adc6 LP |
2042 | f->fd = -1; |
2043 | f->mode = mode; | |
7560fffc | 2044 | |
0284adc6 LP |
2045 | f->flags = flags; |
2046 | f->prot = prot_from_flags(flags); | |
2047 | f->writable = (flags & O_ACCMODE) != O_RDONLY; | |
48b61739 | 2048 | #ifdef HAVE_XZ |
0284adc6 | 2049 | f->compress = compress; |
48b61739 | 2050 | #endif |
49a32d43 | 2051 | #ifdef HAVE_GCRYPT |
baed47c3 | 2052 | f->seal = seal; |
49a32d43 | 2053 | #endif |
7560fffc | 2054 | |
0284adc6 LP |
2055 | if (mmap_cache) |
2056 | f->mmap = mmap_cache_ref(mmap_cache); | |
2057 | else { | |
84168d80 | 2058 | f->mmap = mmap_cache_new(); |
0284adc6 LP |
2059 | if (!f->mmap) { |
2060 | r = -ENOMEM; | |
2061 | goto fail; | |
2062 | } | |
2063 | } | |
7560fffc | 2064 | |
0284adc6 LP |
2065 | f->path = strdup(fname); |
2066 | if (!f->path) { | |
2067 | r = -ENOMEM; | |
2068 | goto fail; | |
2069 | } | |
7560fffc | 2070 | |
0284adc6 LP |
2071 | f->fd = open(f->path, f->flags|O_CLOEXEC, f->mode); |
2072 | if (f->fd < 0) { | |
2073 | r = -errno; | |
2074 | goto fail; | |
7560fffc | 2075 | } |
7560fffc | 2076 | |
0284adc6 LP |
2077 | if (fstat(f->fd, &f->last_stat) < 0) { |
2078 | r = -errno; | |
2079 | goto fail; | |
2080 | } | |
7560fffc | 2081 | |
0284adc6 LP |
2082 | if (f->last_stat.st_size == 0 && f->writable) { |
2083 | newly_created = true; | |
7560fffc | 2084 | |
feb12d3e | 2085 | #ifdef HAVE_GCRYPT |
0284adc6 | 2086 | /* Try to load the FSPRG state, and if we can't, then |
baed47c3 | 2087 | * just don't do sealing */ |
49a32d43 LP |
2088 | if (f->seal) { |
2089 | r = journal_file_fss_load(f); | |
2090 | if (r < 0) | |
2091 | f->seal = false; | |
2092 | } | |
feb12d3e | 2093 | #endif |
7560fffc | 2094 | |
0284adc6 LP |
2095 | r = journal_file_init_header(f, template); |
2096 | if (r < 0) | |
2097 | goto fail; | |
7560fffc | 2098 | |
0284adc6 LP |
2099 | if (fstat(f->fd, &f->last_stat) < 0) { |
2100 | r = -errno; | |
2101 | goto fail; | |
2102 | } | |
2103 | } | |
7560fffc | 2104 | |
0284adc6 LP |
2105 | if (f->last_stat.st_size < (off_t) HEADER_SIZE_MIN) { |
2106 | r = -EIO; | |
2107 | goto fail; | |
2108 | } | |
7560fffc | 2109 | |
0284adc6 LP |
2110 | f->header = mmap(NULL, PAGE_ALIGN(sizeof(Header)), prot_from_flags(flags), MAP_SHARED, f->fd, 0); |
2111 | if (f->header == MAP_FAILED) { | |
2112 | f->header = NULL; | |
2113 | r = -errno; | |
2114 | goto fail; | |
2115 | } | |
7560fffc | 2116 | |
0284adc6 LP |
2117 | if (!newly_created) { |
2118 | r = journal_file_verify_header(f); | |
2119 | if (r < 0) | |
2120 | goto fail; | |
2121 | } | |
7560fffc | 2122 | |
feb12d3e | 2123 | #ifdef HAVE_GCRYPT |
0284adc6 | 2124 | if (!newly_created && f->writable) { |
baed47c3 | 2125 | r = journal_file_fss_load(f); |
0284adc6 LP |
2126 | if (r < 0) |
2127 | goto fail; | |
2128 | } | |
feb12d3e | 2129 | #endif |
cec736d2 LP |
2130 | |
2131 | if (f->writable) { | |
4a92baf3 LP |
2132 | if (metrics) { |
2133 | journal_default_metrics(metrics, f->fd); | |
2134 | f->metrics = *metrics; | |
2135 | } else if (template) | |
2136 | f->metrics = template->metrics; | |
2137 | ||
cec736d2 LP |
2138 | r = journal_file_refresh_header(f); |
2139 | if (r < 0) | |
2140 | goto fail; | |
2141 | } | |
2142 | ||
feb12d3e | 2143 | #ifdef HAVE_GCRYPT |
baed47c3 | 2144 | r = journal_file_hmac_setup(f); |
14d10188 LP |
2145 | if (r < 0) |
2146 | goto fail; | |
feb12d3e | 2147 | #endif |
14d10188 | 2148 | |
cec736d2 | 2149 | if (newly_created) { |
de190aef | 2150 | r = journal_file_setup_field_hash_table(f); |
cec736d2 LP |
2151 | if (r < 0) |
2152 | goto fail; | |
2153 | ||
de190aef | 2154 | r = journal_file_setup_data_hash_table(f); |
cec736d2 LP |
2155 | if (r < 0) |
2156 | goto fail; | |
7560fffc | 2157 | |
feb12d3e | 2158 | #ifdef HAVE_GCRYPT |
7560fffc LP |
2159 | r = journal_file_append_first_tag(f); |
2160 | if (r < 0) | |
2161 | goto fail; | |
feb12d3e | 2162 | #endif |
cec736d2 LP |
2163 | } |
2164 | ||
de190aef | 2165 | r = journal_file_map_field_hash_table(f); |
cec736d2 LP |
2166 | if (r < 0) |
2167 | goto fail; | |
2168 | ||
de190aef | 2169 | r = journal_file_map_data_hash_table(f); |
cec736d2 LP |
2170 | if (r < 0) |
2171 | goto fail; | |
2172 | ||
0559d3a5 | 2173 | *ret = f; |
cec736d2 LP |
2174 | return 0; |
2175 | ||
2176 | fail: | |
2177 | journal_file_close(f); | |
2178 | ||
2179 | return r; | |
2180 | } | |
0ac38b70 | 2181 | |
baed47c3 | 2182 | int journal_file_rotate(JournalFile **f, bool compress, bool seal) { |
0ac38b70 LP |
2183 | char *p; |
2184 | size_t l; | |
2185 | JournalFile *old_file, *new_file = NULL; | |
2186 | int r; | |
2187 | ||
2188 | assert(f); | |
2189 | assert(*f); | |
2190 | ||
2191 | old_file = *f; | |
2192 | ||
2193 | if (!old_file->writable) | |
2194 | return -EINVAL; | |
2195 | ||
2196 | if (!endswith(old_file->path, ".journal")) | |
2197 | return -EINVAL; | |
2198 | ||
2199 | l = strlen(old_file->path); | |
2200 | ||
9447a7f1 | 2201 | p = new(char, l + 1 + 32 + 1 + 16 + 1 + 16 + 1); |
0ac38b70 LP |
2202 | if (!p) |
2203 | return -ENOMEM; | |
2204 | ||
2205 | memcpy(p, old_file->path, l - 8); | |
2206 | p[l-8] = '@'; | |
2207 | sd_id128_to_string(old_file->header->seqnum_id, p + l - 8 + 1); | |
2208 | snprintf(p + l - 8 + 1 + 32, 1 + 16 + 1 + 16 + 8 + 1, | |
2209 | "-%016llx-%016llx.journal", | |
beec0085 | 2210 | (unsigned long long) le64toh((*f)->header->tail_entry_seqnum), |
0ac38b70 LP |
2211 | (unsigned long long) le64toh((*f)->header->tail_entry_realtime)); |
2212 | ||
2213 | r = rename(old_file->path, p); | |
2214 | free(p); | |
2215 | ||
2216 | if (r < 0) | |
2217 | return -errno; | |
2218 | ||
ccdbaf91 | 2219 | old_file->header->state = STATE_ARCHIVED; |
0ac38b70 | 2220 | |
baed47c3 | 2221 | 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 |
2222 | journal_file_close(old_file); |
2223 | ||
2224 | *f = new_file; | |
2225 | return r; | |
2226 | } | |
2227 | ||
9447a7f1 LP |
2228 | int journal_file_open_reliably( |
2229 | const char *fname, | |
2230 | int flags, | |
2231 | mode_t mode, | |
7560fffc | 2232 | bool compress, |
baed47c3 | 2233 | bool seal, |
4a92baf3 | 2234 | JournalMetrics *metrics, |
27370278 | 2235 | MMapCache *mmap_cache, |
9447a7f1 LP |
2236 | JournalFile *template, |
2237 | JournalFile **ret) { | |
2238 | ||
2239 | int r; | |
2240 | size_t l; | |
2241 | char *p; | |
2242 | ||
baed47c3 | 2243 | r = journal_file_open(fname, flags, mode, compress, seal, |
27370278 | 2244 | metrics, mmap_cache, template, ret); |
0071d9f1 LP |
2245 | if (r != -EBADMSG && /* corrupted */ |
2246 | r != -ENODATA && /* truncated */ | |
2247 | r != -EHOSTDOWN && /* other machine */ | |
a1a1898f LP |
2248 | r != -EPROTONOSUPPORT && /* incompatible feature */ |
2249 | r != -EBUSY && /* unclean shutdown */ | |
2250 | r != -ESHUTDOWN /* already archived */) | |
9447a7f1 LP |
2251 | return r; |
2252 | ||
2253 | if ((flags & O_ACCMODE) == O_RDONLY) | |
2254 | return r; | |
2255 | ||
2256 | if (!(flags & O_CREAT)) | |
2257 | return r; | |
2258 | ||
7560fffc LP |
2259 | if (!endswith(fname, ".journal")) |
2260 | return r; | |
2261 | ||
5c70eab4 LP |
2262 | /* The file is corrupted. Rotate it away and try it again (but only once) */ |
2263 | ||
9447a7f1 LP |
2264 | l = strlen(fname); |
2265 | if (asprintf(&p, "%.*s@%016llx-%016llx.journal~", | |
2266 | (int) (l-8), fname, | |
2267 | (unsigned long long) now(CLOCK_REALTIME), | |
2268 | random_ull()) < 0) | |
2269 | return -ENOMEM; | |
2270 | ||
2271 | r = rename(fname, p); | |
2272 | free(p); | |
2273 | if (r < 0) | |
2274 | return -errno; | |
2275 | ||
a1a1898f | 2276 | log_warning("File %s corrupted or uncleanly shut down, renaming and replacing.", fname); |
9447a7f1 | 2277 | |
baed47c3 | 2278 | return journal_file_open(fname, flags, mode, compress, seal, |
27370278 | 2279 | metrics, mmap_cache, template, ret); |
9447a7f1 LP |
2280 | } |
2281 | ||
cf244689 LP |
2282 | |
2283 | int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset) { | |
2284 | uint64_t i, n; | |
2285 | uint64_t q, xor_hash = 0; | |
2286 | int r; | |
2287 | EntryItem *items; | |
2288 | dual_timestamp ts; | |
2289 | ||
2290 | assert(from); | |
2291 | assert(to); | |
2292 | assert(o); | |
2293 | assert(p); | |
2294 | ||
2295 | if (!to->writable) | |
2296 | return -EPERM; | |
2297 | ||
2298 | ts.monotonic = le64toh(o->entry.monotonic); | |
2299 | ts.realtime = le64toh(o->entry.realtime); | |
2300 | ||
2301 | if (to->tail_entry_monotonic_valid && | |
2302 | ts.monotonic < le64toh(to->header->tail_entry_monotonic)) | |
2303 | return -EINVAL; | |
2304 | ||
cf244689 LP |
2305 | n = journal_file_entry_n_items(o); |
2306 | items = alloca(sizeof(EntryItem) * n); | |
2307 | ||
2308 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2309 | uint64_t l, h; |
2310 | le64_t le_hash; | |
cf244689 LP |
2311 | size_t t; |
2312 | void *data; | |
2313 | Object *u; | |
2314 | ||
2315 | q = le64toh(o->entry.items[i].object_offset); | |
2316 | le_hash = o->entry.items[i].hash; | |
2317 | ||
2318 | r = journal_file_move_to_object(from, OBJECT_DATA, q, &o); | |
2319 | if (r < 0) | |
2320 | return r; | |
2321 | ||
2322 | if (le_hash != o->data.hash) | |
2323 | return -EBADMSG; | |
2324 | ||
2325 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2326 | t = (size_t) l; | |
2327 | ||
2328 | /* We hit the limit on 32bit machines */ | |
2329 | if ((uint64_t) t != l) | |
2330 | return -E2BIG; | |
2331 | ||
2332 | if (o->object.flags & OBJECT_COMPRESSED) { | |
2333 | #ifdef HAVE_XZ | |
2334 | uint64_t rsize; | |
2335 | ||
2336 | if (!uncompress_blob(o->data.payload, l, &from->compress_buffer, &from->compress_buffer_size, &rsize)) | |
2337 | return -EBADMSG; | |
2338 | ||
2339 | data = from->compress_buffer; | |
2340 | l = rsize; | |
2341 | #else | |
2342 | return -EPROTONOSUPPORT; | |
2343 | #endif | |
2344 | } else | |
2345 | data = o->data.payload; | |
2346 | ||
2347 | r = journal_file_append_data(to, data, l, &u, &h); | |
2348 | if (r < 0) | |
2349 | return r; | |
2350 | ||
2351 | xor_hash ^= le64toh(u->data.hash); | |
2352 | items[i].object_offset = htole64(h); | |
2353 | items[i].hash = u->data.hash; | |
2354 | ||
2355 | r = journal_file_move_to_object(from, OBJECT_ENTRY, p, &o); | |
2356 | if (r < 0) | |
2357 | return r; | |
2358 | } | |
2359 | ||
2360 | return journal_file_append_entry_internal(to, &ts, xor_hash, items, n, seqnum, ret, offset); | |
2361 | } | |
babfc091 LP |
2362 | |
2363 | void journal_default_metrics(JournalMetrics *m, int fd) { | |
2364 | uint64_t fs_size = 0; | |
2365 | struct statvfs ss; | |
a7bc2c2a | 2366 | char a[FORMAT_BYTES_MAX], b[FORMAT_BYTES_MAX], c[FORMAT_BYTES_MAX], d[FORMAT_BYTES_MAX]; |
babfc091 LP |
2367 | |
2368 | assert(m); | |
2369 | assert(fd >= 0); | |
2370 | ||
2371 | if (fstatvfs(fd, &ss) >= 0) | |
2372 | fs_size = ss.f_frsize * ss.f_blocks; | |
2373 | ||
2374 | if (m->max_use == (uint64_t) -1) { | |
2375 | ||
2376 | if (fs_size > 0) { | |
2377 | m->max_use = PAGE_ALIGN(fs_size / 10); /* 10% of file system size */ | |
2378 | ||
2379 | if (m->max_use > DEFAULT_MAX_USE_UPPER) | |
2380 | m->max_use = DEFAULT_MAX_USE_UPPER; | |
2381 | ||
2382 | if (m->max_use < DEFAULT_MAX_USE_LOWER) | |
2383 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2384 | } else | |
2385 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2386 | } else { | |
2387 | m->max_use = PAGE_ALIGN(m->max_use); | |
2388 | ||
2389 | if (m->max_use < JOURNAL_FILE_SIZE_MIN*2) | |
2390 | m->max_use = JOURNAL_FILE_SIZE_MIN*2; | |
2391 | } | |
2392 | ||
2393 | if (m->max_size == (uint64_t) -1) { | |
2394 | m->max_size = PAGE_ALIGN(m->max_use / 8); /* 8 chunks */ | |
2395 | ||
2396 | if (m->max_size > DEFAULT_MAX_SIZE_UPPER) | |
2397 | m->max_size = DEFAULT_MAX_SIZE_UPPER; | |
2398 | } else | |
2399 | m->max_size = PAGE_ALIGN(m->max_size); | |
2400 | ||
2401 | if (m->max_size < JOURNAL_FILE_SIZE_MIN) | |
2402 | m->max_size = JOURNAL_FILE_SIZE_MIN; | |
2403 | ||
2404 | if (m->max_size*2 > m->max_use) | |
2405 | m->max_use = m->max_size*2; | |
2406 | ||
2407 | if (m->min_size == (uint64_t) -1) | |
2408 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2409 | else { | |
2410 | m->min_size = PAGE_ALIGN(m->min_size); | |
2411 | ||
2412 | if (m->min_size < JOURNAL_FILE_SIZE_MIN) | |
2413 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2414 | ||
2415 | if (m->min_size > m->max_size) | |
2416 | m->max_size = m->min_size; | |
2417 | } | |
2418 | ||
2419 | if (m->keep_free == (uint64_t) -1) { | |
2420 | ||
2421 | if (fs_size > 0) { | |
2422 | m->keep_free = PAGE_ALIGN(fs_size / 20); /* 5% of file system size */ | |
2423 | ||
2424 | if (m->keep_free > DEFAULT_KEEP_FREE_UPPER) | |
2425 | m->keep_free = DEFAULT_KEEP_FREE_UPPER; | |
2426 | ||
2427 | } else | |
2428 | m->keep_free = DEFAULT_KEEP_FREE; | |
2429 | } | |
2430 | ||
2b43f939 LP |
2431 | log_debug("Fixed max_use=%s max_size=%s min_size=%s keep_free=%s", |
2432 | format_bytes(a, sizeof(a), m->max_use), | |
2433 | format_bytes(b, sizeof(b), m->max_size), | |
2434 | format_bytes(c, sizeof(c), m->min_size), | |
2435 | format_bytes(d, sizeof(d), m->keep_free)); | |
babfc091 | 2436 | } |
08984293 LP |
2437 | |
2438 | int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to) { | |
08984293 LP |
2439 | assert(f); |
2440 | assert(from || to); | |
2441 | ||
2442 | if (from) { | |
162566a4 LP |
2443 | if (f->header->head_entry_realtime == 0) |
2444 | return -ENOENT; | |
08984293 | 2445 | |
162566a4 | 2446 | *from = le64toh(f->header->head_entry_realtime); |
08984293 LP |
2447 | } |
2448 | ||
2449 | if (to) { | |
162566a4 LP |
2450 | if (f->header->tail_entry_realtime == 0) |
2451 | return -ENOENT; | |
08984293 | 2452 | |
162566a4 | 2453 | *to = le64toh(f->header->tail_entry_realtime); |
08984293 LP |
2454 | } |
2455 | ||
2456 | return 1; | |
2457 | } | |
2458 | ||
2459 | int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot_id, usec_t *from, usec_t *to) { | |
2460 | char t[9+32+1] = "_BOOT_ID="; | |
2461 | Object *o; | |
2462 | uint64_t p; | |
2463 | int r; | |
2464 | ||
2465 | assert(f); | |
2466 | assert(from || to); | |
2467 | ||
2468 | sd_id128_to_string(boot_id, t + 9); | |
2469 | ||
2470 | r = journal_file_find_data_object(f, t, strlen(t), &o, &p); | |
2471 | if (r <= 0) | |
2472 | return r; | |
2473 | ||
2474 | if (le64toh(o->data.n_entries) <= 0) | |
2475 | return 0; | |
2476 | ||
2477 | if (from) { | |
2478 | r = journal_file_move_to_object(f, OBJECT_ENTRY, le64toh(o->data.entry_offset), &o); | |
2479 | if (r < 0) | |
2480 | return r; | |
2481 | ||
2482 | *from = le64toh(o->entry.monotonic); | |
2483 | } | |
2484 | ||
2485 | if (to) { | |
2486 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
2487 | if (r < 0) | |
2488 | return r; | |
2489 | ||
2490 | r = generic_array_get_plus_one(f, | |
2491 | le64toh(o->data.entry_offset), | |
2492 | le64toh(o->data.entry_array_offset), | |
2493 | le64toh(o->data.n_entries)-1, | |
2494 | &o, NULL); | |
2495 | if (r <= 0) | |
2496 | return r; | |
2497 | ||
2498 | *to = le64toh(o->entry.monotonic); | |
2499 | } | |
2500 | ||
2501 | return 1; | |
2502 | } | |
dca6219e LP |
2503 | |
2504 | bool journal_file_rotate_suggested(JournalFile *f) { | |
2505 | assert(f); | |
2506 | ||
2507 | /* If we gained new header fields we gained new features, | |
2508 | * hence suggest a rotation */ | |
361f9cbc LP |
2509 | if (le64toh(f->header->header_size) < sizeof(Header)) { |
2510 | log_debug("%s uses an outdated header, suggesting rotation.", f->path); | |
dca6219e | 2511 | return true; |
361f9cbc | 2512 | } |
dca6219e LP |
2513 | |
2514 | /* Let's check if the hash tables grew over a certain fill | |
2515 | * level (75%, borrowing this value from Java's hash table | |
2516 | * implementation), and if so suggest a rotation. To calculate | |
2517 | * the fill level we need the n_data field, which only exists | |
2518 | * in newer versions. */ | |
2519 | ||
2520 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) | |
361f9cbc LP |
2521 | if (le64toh(f->header->n_data) * 4ULL > (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
2522 | 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.", | |
2523 | f->path, | |
2524 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem))), | |
2525 | (unsigned long long) le64toh(f->header->n_data), | |
2526 | (unsigned long long) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)), | |
2527 | (unsigned long long) (f->last_stat.st_size), | |
2528 | (unsigned long long) (f->last_stat.st_size / le64toh(f->header->n_data))); | |
dca6219e | 2529 | return true; |
361f9cbc | 2530 | } |
dca6219e LP |
2531 | |
2532 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) | |
361f9cbc LP |
2533 | if (le64toh(f->header->n_fields) * 4ULL > (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
2534 | log_debug("Field hash table of %s has a fill level at %.1f (%llu of %llu items), suggesting rotation.", | |
2535 | f->path, | |
2536 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))), | |
2537 | (unsigned long long) le64toh(f->header->n_fields), | |
2538 | (unsigned long long) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))); | |
dca6219e | 2539 | return true; |
361f9cbc | 2540 | } |
dca6219e LP |
2541 | |
2542 | return false; | |
2543 | } |