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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 | ||
fb0951b0 LP |
30 | #ifdef HAVE_XATTR |
31 | #include <attr/xattr.h> | |
32 | #endif | |
33 | ||
cec736d2 LP |
34 | #include "journal-def.h" |
35 | #include "journal-file.h" | |
0284adc6 | 36 | #include "journal-authenticate.h" |
cec736d2 | 37 | #include "lookup3.h" |
807e17f0 | 38 | #include "compress.h" |
7560fffc | 39 | #include "fsprg.h" |
cec736d2 | 40 | |
4a92baf3 LP |
41 | #define DEFAULT_DATA_HASH_TABLE_SIZE (2047ULL*sizeof(HashItem)) |
42 | #define DEFAULT_FIELD_HASH_TABLE_SIZE (333ULL*sizeof(HashItem)) | |
cec736d2 | 43 | |
be19b7df | 44 | #define COMPRESSION_SIZE_THRESHOLD (512ULL) |
807e17f0 | 45 | |
babfc091 | 46 | /* This is the minimum journal file size */ |
b47ffcfd | 47 | #define JOURNAL_FILE_SIZE_MIN (64ULL*1024ULL) /* 64 KiB */ |
babfc091 LP |
48 | |
49 | /* These are the lower and upper bounds if we deduce the max_use value | |
50 | * from the file system size */ | |
51 | #define DEFAULT_MAX_USE_LOWER (1ULL*1024ULL*1024ULL) /* 1 MiB */ | |
52 | #define DEFAULT_MAX_USE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
53 | ||
54 | /* This is the upper bound if we deduce max_size from max_use */ | |
71100051 | 55 | #define DEFAULT_MAX_SIZE_UPPER (128ULL*1024ULL*1024ULL) /* 128 MiB */ |
babfc091 LP |
56 | |
57 | /* This is the upper bound if we deduce the keep_free value from the | |
58 | * file system size */ | |
59 | #define DEFAULT_KEEP_FREE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */ | |
60 | ||
61 | /* This is the keep_free value when we can't determine the system | |
62 | * size */ | |
63 | #define DEFAULT_KEEP_FREE (1024ULL*1024ULL) /* 1 MB */ | |
64 | ||
dca6219e LP |
65 | /* n_data was the first entry we added after the initial file format design */ |
66 | #define HEADER_SIZE_MIN ALIGN64(offsetof(Header, n_data)) | |
cec736d2 | 67 | |
cec736d2 | 68 | void journal_file_close(JournalFile *f) { |
de190aef | 69 | assert(f); |
cec736d2 | 70 | |
feb12d3e | 71 | #ifdef HAVE_GCRYPT |
b0af6f41 | 72 | /* Write the final tag */ |
c586dbf1 | 73 | if (f->seal && f->writable) |
b0af6f41 | 74 | journal_file_append_tag(f); |
feb12d3e | 75 | #endif |
b0af6f41 | 76 | |
7560fffc | 77 | /* Sync everything to disk, before we mark the file offline */ |
16e9f408 LP |
78 | if (f->mmap && f->fd >= 0) |
79 | mmap_cache_close_fd(f->mmap, f->fd); | |
7560fffc LP |
80 | |
81 | if (f->writable && f->fd >= 0) | |
82 | fdatasync(f->fd); | |
83 | ||
d384c7a8 | 84 | if (f->header) { |
cd96b3b8 LP |
85 | /* Mark the file offline. Don't override the archived state if it already is set */ |
86 | if (f->writable && f->header->state == STATE_ONLINE) | |
d384c7a8 | 87 | f->header->state = STATE_OFFLINE; |
cec736d2 | 88 | |
d384c7a8 MS |
89 | munmap(f->header, PAGE_ALIGN(sizeof(Header))); |
90 | } | |
cec736d2 | 91 | |
0ac38b70 LP |
92 | if (f->fd >= 0) |
93 | close_nointr_nofail(f->fd); | |
94 | ||
cec736d2 | 95 | free(f->path); |
807e17f0 | 96 | |
16e9f408 LP |
97 | if (f->mmap) |
98 | mmap_cache_unref(f->mmap); | |
99 | ||
807e17f0 LP |
100 | #ifdef HAVE_XZ |
101 | free(f->compress_buffer); | |
102 | #endif | |
103 | ||
7560fffc | 104 | #ifdef HAVE_GCRYPT |
baed47c3 LP |
105 | if (f->fss_file) |
106 | munmap(f->fss_file, PAGE_ALIGN(f->fss_file_size)); | |
b7c9ae91 LP |
107 | else if (f->fsprg_state) |
108 | free(f->fsprg_state); | |
109 | ||
110 | free(f->fsprg_seed); | |
7560fffc LP |
111 | |
112 | if (f->hmac) | |
113 | gcry_md_close(f->hmac); | |
114 | #endif | |
115 | ||
cec736d2 LP |
116 | free(f); |
117 | } | |
118 | ||
0ac38b70 | 119 | static int journal_file_init_header(JournalFile *f, JournalFile *template) { |
cec736d2 LP |
120 | Header h; |
121 | ssize_t k; | |
122 | int r; | |
123 | ||
124 | assert(f); | |
125 | ||
126 | zero(h); | |
7560fffc | 127 | memcpy(h.signature, HEADER_SIGNATURE, 8); |
23b0b2b2 | 128 | h.header_size = htole64(ALIGN64(sizeof(h))); |
cec736d2 | 129 | |
7560fffc LP |
130 | h.incompatible_flags = |
131 | htole32(f->compress ? HEADER_INCOMPATIBLE_COMPRESSED : 0); | |
132 | ||
133 | h.compatible_flags = | |
baed47c3 | 134 | htole32(f->seal ? HEADER_COMPATIBLE_SEALED : 0); |
7560fffc | 135 | |
cec736d2 LP |
136 | r = sd_id128_randomize(&h.file_id); |
137 | if (r < 0) | |
138 | return r; | |
139 | ||
0ac38b70 LP |
140 | if (template) { |
141 | h.seqnum_id = template->header->seqnum_id; | |
beec0085 | 142 | h.tail_entry_seqnum = template->header->tail_entry_seqnum; |
0ac38b70 LP |
143 | } else |
144 | h.seqnum_id = h.file_id; | |
cec736d2 LP |
145 | |
146 | k = pwrite(f->fd, &h, sizeof(h), 0); | |
147 | if (k < 0) | |
148 | return -errno; | |
149 | ||
150 | if (k != sizeof(h)) | |
151 | return -EIO; | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int journal_file_refresh_header(JournalFile *f) { | |
157 | int r; | |
de190aef | 158 | sd_id128_t boot_id; |
cec736d2 LP |
159 | |
160 | assert(f); | |
161 | ||
162 | r = sd_id128_get_machine(&f->header->machine_id); | |
163 | if (r < 0) | |
164 | return r; | |
165 | ||
de190aef | 166 | r = sd_id128_get_boot(&boot_id); |
cec736d2 LP |
167 | if (r < 0) |
168 | return r; | |
169 | ||
de190aef LP |
170 | if (sd_id128_equal(boot_id, f->header->boot_id)) |
171 | f->tail_entry_monotonic_valid = true; | |
172 | ||
173 | f->header->boot_id = boot_id; | |
174 | ||
175 | f->header->state = STATE_ONLINE; | |
b788cc23 | 176 | |
7560fffc LP |
177 | /* Sync the online state to disk */ |
178 | msync(f->header, PAGE_ALIGN(sizeof(Header)), MS_SYNC); | |
179 | fdatasync(f->fd); | |
b788cc23 | 180 | |
cec736d2 LP |
181 | return 0; |
182 | } | |
183 | ||
184 | static int journal_file_verify_header(JournalFile *f) { | |
185 | assert(f); | |
186 | ||
7560fffc | 187 | if (memcmp(f->header->signature, HEADER_SIGNATURE, 8)) |
cec736d2 LP |
188 | return -EBADMSG; |
189 | ||
7560fffc LP |
190 | /* In both read and write mode we refuse to open files with |
191 | * incompatible flags we don't know */ | |
807e17f0 | 192 | #ifdef HAVE_XZ |
7560fffc | 193 | if ((le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) != 0) |
807e17f0 LP |
194 | return -EPROTONOSUPPORT; |
195 | #else | |
cec736d2 LP |
196 | if (f->header->incompatible_flags != 0) |
197 | return -EPROTONOSUPPORT; | |
807e17f0 | 198 | #endif |
cec736d2 | 199 | |
7560fffc LP |
200 | /* When open for writing we refuse to open files with |
201 | * compatible flags, too */ | |
202 | if (f->writable) { | |
203 | #ifdef HAVE_GCRYPT | |
baed47c3 | 204 | if ((le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) != 0) |
7560fffc LP |
205 | return -EPROTONOSUPPORT; |
206 | #else | |
207 | if (f->header->compatible_flags != 0) | |
208 | return -EPROTONOSUPPORT; | |
209 | #endif | |
210 | } | |
211 | ||
db11ac1a LP |
212 | if (f->header->state >= _STATE_MAX) |
213 | return -EBADMSG; | |
214 | ||
dca6219e LP |
215 | /* The first addition was n_data, so check that we are at least this large */ |
216 | if (le64toh(f->header->header_size) < HEADER_SIZE_MIN) | |
23b0b2b2 LP |
217 | return -EBADMSG; |
218 | ||
8088cbd3 | 219 | if (JOURNAL_HEADER_SEALED(f->header) && !JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
beec0085 LP |
220 | return -EBADMSG; |
221 | ||
db11ac1a LP |
222 | if ((le64toh(f->header->header_size) + le64toh(f->header->arena_size)) > (uint64_t) f->last_stat.st_size) |
223 | return -ENODATA; | |
224 | ||
225 | if (le64toh(f->header->tail_object_offset) > (le64toh(f->header->header_size) + le64toh(f->header->arena_size))) | |
226 | return -ENODATA; | |
227 | ||
7762e02b LP |
228 | if (!VALID64(le64toh(f->header->data_hash_table_offset)) || |
229 | !VALID64(le64toh(f->header->field_hash_table_offset)) || | |
230 | !VALID64(le64toh(f->header->tail_object_offset)) || | |
231 | !VALID64(le64toh(f->header->entry_array_offset))) | |
232 | return -ENODATA; | |
233 | ||
234 | if (le64toh(f->header->data_hash_table_offset) < le64toh(f->header->header_size) || | |
235 | le64toh(f->header->field_hash_table_offset) < le64toh(f->header->header_size) || | |
236 | le64toh(f->header->tail_object_offset) < le64toh(f->header->header_size) || | |
237 | le64toh(f->header->entry_array_offset) < le64toh(f->header->header_size)) | |
cec736d2 LP |
238 | return -ENODATA; |
239 | ||
240 | if (f->writable) { | |
ccdbaf91 | 241 | uint8_t state; |
cec736d2 LP |
242 | sd_id128_t machine_id; |
243 | int r; | |
244 | ||
245 | r = sd_id128_get_machine(&machine_id); | |
246 | if (r < 0) | |
247 | return r; | |
248 | ||
249 | if (!sd_id128_equal(machine_id, f->header->machine_id)) | |
250 | return -EHOSTDOWN; | |
251 | ||
de190aef | 252 | state = f->header->state; |
cec736d2 | 253 | |
71fa6f00 LP |
254 | if (state == STATE_ONLINE) { |
255 | log_debug("Journal file %s is already online. Assuming unclean closing.", f->path); | |
256 | return -EBUSY; | |
257 | } else if (state == STATE_ARCHIVED) | |
cec736d2 | 258 | return -ESHUTDOWN; |
71fa6f00 LP |
259 | else if (state != STATE_OFFLINE) { |
260 | log_debug("Journal file %s has unknown state %u.", f->path, state); | |
261 | return -EBUSY; | |
262 | } | |
cec736d2 LP |
263 | } |
264 | ||
8088cbd3 | 265 | f->compress = JOURNAL_HEADER_COMPRESSED(f->header); |
c586dbf1 | 266 | |
f1889c91 | 267 | f->seal = JOURNAL_HEADER_SEALED(f->header); |
7560fffc | 268 | |
cec736d2 LP |
269 | return 0; |
270 | } | |
271 | ||
272 | static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size) { | |
cec736d2 | 273 | uint64_t old_size, new_size; |
fec2aa2f | 274 | int r; |
cec736d2 LP |
275 | |
276 | assert(f); | |
277 | ||
cec736d2 | 278 | /* We assume that this file is not sparse, and we know that |
38ac38b2 | 279 | * for sure, since we always call posix_fallocate() |
cec736d2 LP |
280 | * ourselves */ |
281 | ||
282 | old_size = | |
23b0b2b2 | 283 | le64toh(f->header->header_size) + |
cec736d2 LP |
284 | le64toh(f->header->arena_size); |
285 | ||
bc85bfee | 286 | new_size = PAGE_ALIGN(offset + size); |
23b0b2b2 LP |
287 | if (new_size < le64toh(f->header->header_size)) |
288 | new_size = le64toh(f->header->header_size); | |
bc85bfee LP |
289 | |
290 | if (new_size <= old_size) | |
cec736d2 LP |
291 | return 0; |
292 | ||
bc85bfee LP |
293 | if (f->metrics.max_size > 0 && |
294 | new_size > f->metrics.max_size) | |
295 | return -E2BIG; | |
cec736d2 | 296 | |
bc85bfee LP |
297 | if (new_size > f->metrics.min_size && |
298 | f->metrics.keep_free > 0) { | |
cec736d2 LP |
299 | struct statvfs svfs; |
300 | ||
301 | if (fstatvfs(f->fd, &svfs) >= 0) { | |
302 | uint64_t available; | |
303 | ||
304 | available = svfs.f_bfree * svfs.f_bsize; | |
305 | ||
bc85bfee LP |
306 | if (available >= f->metrics.keep_free) |
307 | available -= f->metrics.keep_free; | |
cec736d2 LP |
308 | else |
309 | available = 0; | |
310 | ||
311 | if (new_size - old_size > available) | |
312 | return -E2BIG; | |
313 | } | |
314 | } | |
315 | ||
bc85bfee LP |
316 | /* Note that the glibc fallocate() fallback is very |
317 | inefficient, hence we try to minimize the allocation area | |
318 | as we can. */ | |
fec2aa2f GV |
319 | r = posix_fallocate(f->fd, old_size, new_size - old_size); |
320 | if (r != 0) | |
321 | return -r; | |
cec736d2 LP |
322 | |
323 | if (fstat(f->fd, &f->last_stat) < 0) | |
324 | return -errno; | |
325 | ||
23b0b2b2 | 326 | f->header->arena_size = htole64(new_size - le64toh(f->header->header_size)); |
cec736d2 LP |
327 | |
328 | return 0; | |
329 | } | |
330 | ||
fcde2389 | 331 | static int journal_file_move_to(JournalFile *f, int context, bool keep_always, uint64_t offset, uint64_t size, void **ret) { |
cec736d2 | 332 | assert(f); |
cec736d2 LP |
333 | assert(ret); |
334 | ||
7762e02b LP |
335 | if (size <= 0) |
336 | return -EINVAL; | |
337 | ||
2a59ea54 | 338 | /* Avoid SIGBUS on invalid accesses */ |
4bbdcdb3 LP |
339 | if (offset + size > (uint64_t) f->last_stat.st_size) { |
340 | /* Hmm, out of range? Let's refresh the fstat() data | |
341 | * first, before we trust that check. */ | |
342 | ||
343 | if (fstat(f->fd, &f->last_stat) < 0 || | |
344 | offset + size > (uint64_t) f->last_stat.st_size) | |
345 | return -EADDRNOTAVAIL; | |
346 | } | |
347 | ||
fcde2389 | 348 | return mmap_cache_get(f->mmap, f->fd, f->prot, context, keep_always, offset, size, &f->last_stat, ret); |
cec736d2 LP |
349 | } |
350 | ||
16e9f408 LP |
351 | static uint64_t minimum_header_size(Object *o) { |
352 | ||
353 | static uint64_t table[] = { | |
354 | [OBJECT_DATA] = sizeof(DataObject), | |
355 | [OBJECT_FIELD] = sizeof(FieldObject), | |
356 | [OBJECT_ENTRY] = sizeof(EntryObject), | |
357 | [OBJECT_DATA_HASH_TABLE] = sizeof(HashTableObject), | |
358 | [OBJECT_FIELD_HASH_TABLE] = sizeof(HashTableObject), | |
359 | [OBJECT_ENTRY_ARRAY] = sizeof(EntryArrayObject), | |
360 | [OBJECT_TAG] = sizeof(TagObject), | |
361 | }; | |
362 | ||
363 | if (o->object.type >= ELEMENTSOF(table) || table[o->object.type] <= 0) | |
364 | return sizeof(ObjectHeader); | |
365 | ||
366 | return table[o->object.type]; | |
367 | } | |
368 | ||
de190aef | 369 | int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret) { |
cec736d2 LP |
370 | int r; |
371 | void *t; | |
372 | Object *o; | |
373 | uint64_t s; | |
16e9f408 | 374 | unsigned context; |
cec736d2 LP |
375 | |
376 | assert(f); | |
377 | assert(ret); | |
378 | ||
db11ac1a LP |
379 | /* Objects may only be located at multiple of 64 bit */ |
380 | if (!VALID64(offset)) | |
381 | return -EFAULT; | |
382 | ||
16e9f408 LP |
383 | /* One context for each type, plus one catch-all for the rest */ |
384 | context = type > 0 && type < _OBJECT_TYPE_MAX ? type : 0; | |
385 | ||
fcde2389 | 386 | r = journal_file_move_to(f, context, false, offset, sizeof(ObjectHeader), &t); |
cec736d2 LP |
387 | if (r < 0) |
388 | return r; | |
389 | ||
390 | o = (Object*) t; | |
391 | s = le64toh(o->object.size); | |
392 | ||
393 | if (s < sizeof(ObjectHeader)) | |
394 | return -EBADMSG; | |
395 | ||
16e9f408 LP |
396 | if (o->object.type <= OBJECT_UNUSED) |
397 | return -EBADMSG; | |
398 | ||
399 | if (s < minimum_header_size(o)) | |
400 | return -EBADMSG; | |
401 | ||
de190aef | 402 | if (type >= 0 && o->object.type != type) |
cec736d2 LP |
403 | return -EBADMSG; |
404 | ||
405 | if (s > sizeof(ObjectHeader)) { | |
fcde2389 | 406 | r = journal_file_move_to(f, o->object.type, false, offset, s, &t); |
cec736d2 LP |
407 | if (r < 0) |
408 | return r; | |
409 | ||
410 | o = (Object*) t; | |
411 | } | |
412 | ||
cec736d2 LP |
413 | *ret = o; |
414 | return 0; | |
415 | } | |
416 | ||
d98cc1f2 | 417 | static uint64_t journal_file_entry_seqnum(JournalFile *f, uint64_t *seqnum) { |
cec736d2 LP |
418 | uint64_t r; |
419 | ||
420 | assert(f); | |
421 | ||
beec0085 | 422 | r = le64toh(f->header->tail_entry_seqnum) + 1; |
c2373f84 LP |
423 | |
424 | if (seqnum) { | |
de190aef | 425 | /* If an external seqnum counter was passed, we update |
c2373f84 LP |
426 | * both the local and the external one, and set it to |
427 | * the maximum of both */ | |
428 | ||
429 | if (*seqnum + 1 > r) | |
430 | r = *seqnum + 1; | |
431 | ||
432 | *seqnum = r; | |
433 | } | |
434 | ||
beec0085 | 435 | f->header->tail_entry_seqnum = htole64(r); |
cec736d2 | 436 | |
beec0085 LP |
437 | if (f->header->head_entry_seqnum == 0) |
438 | f->header->head_entry_seqnum = htole64(r); | |
de190aef | 439 | |
cec736d2 LP |
440 | return r; |
441 | } | |
442 | ||
0284adc6 | 443 | int journal_file_append_object(JournalFile *f, int type, uint64_t size, Object **ret, uint64_t *offset) { |
cec736d2 LP |
444 | int r; |
445 | uint64_t p; | |
446 | Object *tail, *o; | |
447 | void *t; | |
448 | ||
449 | assert(f); | |
16e9f408 | 450 | assert(type > 0 && type < _OBJECT_TYPE_MAX); |
cec736d2 LP |
451 | assert(size >= sizeof(ObjectHeader)); |
452 | assert(offset); | |
453 | assert(ret); | |
454 | ||
455 | p = le64toh(f->header->tail_object_offset); | |
cec736d2 | 456 | if (p == 0) |
23b0b2b2 | 457 | p = le64toh(f->header->header_size); |
cec736d2 | 458 | else { |
de190aef | 459 | r = journal_file_move_to_object(f, -1, p, &tail); |
cec736d2 LP |
460 | if (r < 0) |
461 | return r; | |
462 | ||
463 | p += ALIGN64(le64toh(tail->object.size)); | |
464 | } | |
465 | ||
466 | r = journal_file_allocate(f, p, size); | |
467 | if (r < 0) | |
468 | return r; | |
469 | ||
fcde2389 | 470 | r = journal_file_move_to(f, type, false, p, size, &t); |
cec736d2 LP |
471 | if (r < 0) |
472 | return r; | |
473 | ||
474 | o = (Object*) t; | |
475 | ||
476 | zero(o->object); | |
de190aef | 477 | o->object.type = type; |
cec736d2 LP |
478 | o->object.size = htole64(size); |
479 | ||
480 | f->header->tail_object_offset = htole64(p); | |
cec736d2 LP |
481 | f->header->n_objects = htole64(le64toh(f->header->n_objects) + 1); |
482 | ||
483 | *ret = o; | |
484 | *offset = p; | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
de190aef | 489 | static int journal_file_setup_data_hash_table(JournalFile *f) { |
cec736d2 LP |
490 | uint64_t s, p; |
491 | Object *o; | |
492 | int r; | |
493 | ||
494 | assert(f); | |
495 | ||
dfabe643 | 496 | /* We estimate that we need 1 hash table entry per 768 of |
4a92baf3 LP |
497 | journal file and we want to make sure we never get beyond |
498 | 75% fill level. Calculate the hash table size for the | |
499 | maximum file size based on these metrics. */ | |
500 | ||
dfabe643 | 501 | s = (f->metrics.max_size * 4 / 768 / 3) * sizeof(HashItem); |
4a92baf3 LP |
502 | if (s < DEFAULT_DATA_HASH_TABLE_SIZE) |
503 | s = DEFAULT_DATA_HASH_TABLE_SIZE; | |
504 | ||
2b43f939 | 505 | log_debug("Reserving %llu entries in hash table.", (unsigned long long) (s / sizeof(HashItem))); |
4a92baf3 | 506 | |
de190aef LP |
507 | r = journal_file_append_object(f, |
508 | OBJECT_DATA_HASH_TABLE, | |
509 | offsetof(Object, hash_table.items) + s, | |
510 | &o, &p); | |
cec736d2 LP |
511 | if (r < 0) |
512 | return r; | |
513 | ||
de190aef | 514 | memset(o->hash_table.items, 0, s); |
cec736d2 | 515 | |
de190aef LP |
516 | f->header->data_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
517 | f->header->data_hash_table_size = htole64(s); | |
cec736d2 LP |
518 | |
519 | return 0; | |
520 | } | |
521 | ||
de190aef | 522 | static int journal_file_setup_field_hash_table(JournalFile *f) { |
cec736d2 LP |
523 | uint64_t s, p; |
524 | Object *o; | |
525 | int r; | |
526 | ||
527 | assert(f); | |
528 | ||
de190aef LP |
529 | s = DEFAULT_FIELD_HASH_TABLE_SIZE; |
530 | r = journal_file_append_object(f, | |
531 | OBJECT_FIELD_HASH_TABLE, | |
532 | offsetof(Object, hash_table.items) + s, | |
533 | &o, &p); | |
cec736d2 LP |
534 | if (r < 0) |
535 | return r; | |
536 | ||
de190aef | 537 | memset(o->hash_table.items, 0, s); |
cec736d2 | 538 | |
de190aef LP |
539 | f->header->field_hash_table_offset = htole64(p + offsetof(Object, hash_table.items)); |
540 | f->header->field_hash_table_size = htole64(s); | |
cec736d2 LP |
541 | |
542 | return 0; | |
543 | } | |
544 | ||
de190aef | 545 | static int journal_file_map_data_hash_table(JournalFile *f) { |
cec736d2 LP |
546 | uint64_t s, p; |
547 | void *t; | |
548 | int r; | |
549 | ||
550 | assert(f); | |
551 | ||
de190aef LP |
552 | p = le64toh(f->header->data_hash_table_offset); |
553 | s = le64toh(f->header->data_hash_table_size); | |
cec736d2 | 554 | |
de190aef | 555 | r = journal_file_move_to(f, |
16e9f408 | 556 | OBJECT_DATA_HASH_TABLE, |
fcde2389 | 557 | true, |
de190aef LP |
558 | p, s, |
559 | &t); | |
cec736d2 LP |
560 | if (r < 0) |
561 | return r; | |
562 | ||
de190aef | 563 | f->data_hash_table = t; |
cec736d2 LP |
564 | return 0; |
565 | } | |
566 | ||
de190aef | 567 | static int journal_file_map_field_hash_table(JournalFile *f) { |
cec736d2 LP |
568 | uint64_t s, p; |
569 | void *t; | |
570 | int r; | |
571 | ||
572 | assert(f); | |
573 | ||
de190aef LP |
574 | p = le64toh(f->header->field_hash_table_offset); |
575 | s = le64toh(f->header->field_hash_table_size); | |
cec736d2 | 576 | |
de190aef | 577 | r = journal_file_move_to(f, |
16e9f408 | 578 | OBJECT_FIELD_HASH_TABLE, |
fcde2389 | 579 | true, |
de190aef LP |
580 | p, s, |
581 | &t); | |
cec736d2 LP |
582 | if (r < 0) |
583 | return r; | |
584 | ||
de190aef | 585 | f->field_hash_table = t; |
cec736d2 LP |
586 | return 0; |
587 | } | |
588 | ||
de190aef LP |
589 | static int journal_file_link_data(JournalFile *f, Object *o, uint64_t offset, uint64_t hash) { |
590 | uint64_t p, h; | |
cec736d2 LP |
591 | int r; |
592 | ||
593 | assert(f); | |
594 | assert(o); | |
595 | assert(offset > 0); | |
b588975f LP |
596 | |
597 | if (o->object.type != OBJECT_DATA) | |
598 | return -EINVAL; | |
cec736d2 | 599 | |
48496df6 LP |
600 | /* This might alter the window we are looking at */ |
601 | ||
de190aef LP |
602 | o->data.next_hash_offset = o->data.next_field_offset = 0; |
603 | o->data.entry_offset = o->data.entry_array_offset = 0; | |
604 | o->data.n_entries = 0; | |
cec736d2 | 605 | |
de190aef | 606 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
8db4213e | 607 | p = le64toh(f->data_hash_table[h].tail_hash_offset); |
cec736d2 LP |
608 | if (p == 0) { |
609 | /* Only entry in the hash table is easy */ | |
de190aef | 610 | f->data_hash_table[h].head_hash_offset = htole64(offset); |
cec736d2 | 611 | } else { |
48496df6 LP |
612 | /* Move back to the previous data object, to patch in |
613 | * pointer */ | |
cec736d2 | 614 | |
de190aef | 615 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
616 | if (r < 0) |
617 | return r; | |
618 | ||
de190aef | 619 | o->data.next_hash_offset = htole64(offset); |
cec736d2 LP |
620 | } |
621 | ||
de190aef | 622 | f->data_hash_table[h].tail_hash_offset = htole64(offset); |
cec736d2 | 623 | |
dca6219e LP |
624 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
625 | f->header->n_data = htole64(le64toh(f->header->n_data) + 1); | |
626 | ||
cec736d2 LP |
627 | return 0; |
628 | } | |
629 | ||
de190aef LP |
630 | int journal_file_find_data_object_with_hash( |
631 | JournalFile *f, | |
632 | const void *data, uint64_t size, uint64_t hash, | |
633 | Object **ret, uint64_t *offset) { | |
48496df6 | 634 | |
de190aef | 635 | uint64_t p, osize, h; |
cec736d2 LP |
636 | int r; |
637 | ||
638 | assert(f); | |
639 | assert(data || size == 0); | |
640 | ||
641 | osize = offsetof(Object, data.payload) + size; | |
642 | ||
bc85bfee LP |
643 | if (f->header->data_hash_table_size == 0) |
644 | return -EBADMSG; | |
645 | ||
de190aef LP |
646 | h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)); |
647 | p = le64toh(f->data_hash_table[h].head_hash_offset); | |
cec736d2 | 648 | |
de190aef LP |
649 | while (p > 0) { |
650 | Object *o; | |
cec736d2 | 651 | |
de190aef | 652 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); |
cec736d2 LP |
653 | if (r < 0) |
654 | return r; | |
655 | ||
807e17f0 | 656 | if (le64toh(o->data.hash) != hash) |
85a131e8 | 657 | goto next; |
807e17f0 LP |
658 | |
659 | if (o->object.flags & OBJECT_COMPRESSED) { | |
660 | #ifdef HAVE_XZ | |
b785c858 | 661 | uint64_t l, rsize; |
cec736d2 | 662 | |
807e17f0 LP |
663 | l = le64toh(o->object.size); |
664 | if (l <= offsetof(Object, data.payload)) | |
cec736d2 LP |
665 | return -EBADMSG; |
666 | ||
807e17f0 LP |
667 | l -= offsetof(Object, data.payload); |
668 | ||
669 | if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize)) | |
670 | return -EBADMSG; | |
671 | ||
b785c858 | 672 | if (rsize == size && |
807e17f0 LP |
673 | memcmp(f->compress_buffer, data, size) == 0) { |
674 | ||
675 | if (ret) | |
676 | *ret = o; | |
677 | ||
678 | if (offset) | |
679 | *offset = p; | |
680 | ||
681 | return 1; | |
682 | } | |
683 | #else | |
684 | return -EPROTONOSUPPORT; | |
685 | #endif | |
686 | ||
687 | } else if (le64toh(o->object.size) == osize && | |
688 | memcmp(o->data.payload, data, size) == 0) { | |
689 | ||
cec736d2 LP |
690 | if (ret) |
691 | *ret = o; | |
692 | ||
693 | if (offset) | |
694 | *offset = p; | |
695 | ||
de190aef | 696 | return 1; |
cec736d2 LP |
697 | } |
698 | ||
85a131e8 | 699 | next: |
cec736d2 LP |
700 | p = le64toh(o->data.next_hash_offset); |
701 | } | |
702 | ||
de190aef LP |
703 | return 0; |
704 | } | |
705 | ||
706 | int journal_file_find_data_object( | |
707 | JournalFile *f, | |
708 | const void *data, uint64_t size, | |
709 | Object **ret, uint64_t *offset) { | |
710 | ||
711 | uint64_t hash; | |
712 | ||
713 | assert(f); | |
714 | assert(data || size == 0); | |
715 | ||
716 | hash = hash64(data, size); | |
717 | ||
718 | return journal_file_find_data_object_with_hash(f, | |
719 | data, size, hash, | |
720 | ret, offset); | |
721 | } | |
722 | ||
48496df6 LP |
723 | static int journal_file_append_data( |
724 | JournalFile *f, | |
725 | const void *data, uint64_t size, | |
726 | Object **ret, uint64_t *offset) { | |
727 | ||
de190aef LP |
728 | uint64_t hash, p; |
729 | uint64_t osize; | |
730 | Object *o; | |
731 | int r; | |
807e17f0 | 732 | bool compressed = false; |
de190aef LP |
733 | |
734 | assert(f); | |
735 | assert(data || size == 0); | |
736 | ||
737 | hash = hash64(data, size); | |
738 | ||
739 | r = journal_file_find_data_object_with_hash(f, data, size, hash, &o, &p); | |
740 | if (r < 0) | |
741 | return r; | |
742 | else if (r > 0) { | |
743 | ||
744 | if (ret) | |
745 | *ret = o; | |
746 | ||
747 | if (offset) | |
748 | *offset = p; | |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
753 | osize = offsetof(Object, data.payload) + size; | |
754 | r = journal_file_append_object(f, OBJECT_DATA, osize, &o, &p); | |
cec736d2 LP |
755 | if (r < 0) |
756 | return r; | |
757 | ||
cec736d2 | 758 | o->data.hash = htole64(hash); |
807e17f0 LP |
759 | |
760 | #ifdef HAVE_XZ | |
761 | if (f->compress && | |
762 | size >= COMPRESSION_SIZE_THRESHOLD) { | |
763 | uint64_t rsize; | |
764 | ||
765 | compressed = compress_blob(data, size, o->data.payload, &rsize); | |
766 | ||
767 | if (compressed) { | |
768 | o->object.size = htole64(offsetof(Object, data.payload) + rsize); | |
769 | o->object.flags |= OBJECT_COMPRESSED; | |
770 | ||
807e17f0 LP |
771 | log_debug("Compressed data object %lu -> %lu", (unsigned long) size, (unsigned long) rsize); |
772 | } | |
773 | } | |
774 | #endif | |
775 | ||
64825d3c | 776 | if (!compressed && size > 0) |
807e17f0 | 777 | memcpy(o->data.payload, data, size); |
cec736d2 | 778 | |
de190aef | 779 | r = journal_file_link_data(f, o, p, hash); |
cec736d2 LP |
780 | if (r < 0) |
781 | return r; | |
782 | ||
48496df6 LP |
783 | /* The linking might have altered the window, so let's |
784 | * refresh our pointer */ | |
785 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
786 | if (r < 0) | |
787 | return r; | |
788 | ||
5996c7c2 LP |
789 | #ifdef HAVE_GCRYPT |
790 | r = journal_file_hmac_put_object(f, OBJECT_DATA, o, p); | |
791 | if (r < 0) | |
792 | return r; | |
793 | #endif | |
794 | ||
cec736d2 LP |
795 | if (ret) |
796 | *ret = o; | |
797 | ||
798 | if (offset) | |
de190aef | 799 | *offset = p; |
cec736d2 LP |
800 | |
801 | return 0; | |
802 | } | |
803 | ||
804 | uint64_t journal_file_entry_n_items(Object *o) { | |
805 | assert(o); | |
b588975f LP |
806 | |
807 | if (o->object.type != OBJECT_ENTRY) | |
808 | return 0; | |
cec736d2 LP |
809 | |
810 | return (le64toh(o->object.size) - offsetof(Object, entry.items)) / sizeof(EntryItem); | |
811 | } | |
812 | ||
0284adc6 | 813 | uint64_t journal_file_entry_array_n_items(Object *o) { |
de190aef | 814 | assert(o); |
b588975f LP |
815 | |
816 | if (o->object.type != OBJECT_ENTRY_ARRAY) | |
817 | return 0; | |
de190aef LP |
818 | |
819 | return (le64toh(o->object.size) - offsetof(Object, entry_array.items)) / sizeof(uint64_t); | |
820 | } | |
821 | ||
fb9a24b6 LP |
822 | uint64_t journal_file_hash_table_n_items(Object *o) { |
823 | assert(o); | |
b588975f LP |
824 | |
825 | if (o->object.type != OBJECT_DATA_HASH_TABLE && | |
826 | o->object.type != OBJECT_FIELD_HASH_TABLE) | |
827 | return 0; | |
fb9a24b6 LP |
828 | |
829 | return (le64toh(o->object.size) - offsetof(Object, hash_table.items)) / sizeof(HashItem); | |
830 | } | |
831 | ||
de190aef | 832 | static int link_entry_into_array(JournalFile *f, |
4fd052ae FC |
833 | le64_t *first, |
834 | le64_t *idx, | |
de190aef | 835 | uint64_t p) { |
cec736d2 | 836 | int r; |
de190aef LP |
837 | uint64_t n = 0, ap = 0, q, i, a, hidx; |
838 | Object *o; | |
839 | ||
cec736d2 | 840 | assert(f); |
de190aef LP |
841 | assert(first); |
842 | assert(idx); | |
843 | assert(p > 0); | |
cec736d2 | 844 | |
de190aef LP |
845 | a = le64toh(*first); |
846 | i = hidx = le64toh(*idx); | |
847 | while (a > 0) { | |
848 | ||
849 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); | |
850 | if (r < 0) | |
851 | return r; | |
cec736d2 | 852 | |
de190aef LP |
853 | n = journal_file_entry_array_n_items(o); |
854 | if (i < n) { | |
855 | o->entry_array.items[i] = htole64(p); | |
856 | *idx = htole64(hidx + 1); | |
857 | return 0; | |
858 | } | |
cec736d2 | 859 | |
de190aef LP |
860 | i -= n; |
861 | ap = a; | |
862 | a = le64toh(o->entry_array.next_entry_array_offset); | |
863 | } | |
864 | ||
865 | if (hidx > n) | |
866 | n = (hidx+1) * 2; | |
867 | else | |
868 | n = n * 2; | |
869 | ||
870 | if (n < 4) | |
871 | n = 4; | |
872 | ||
873 | r = journal_file_append_object(f, OBJECT_ENTRY_ARRAY, | |
874 | offsetof(Object, entry_array.items) + n * sizeof(uint64_t), | |
875 | &o, &q); | |
cec736d2 LP |
876 | if (r < 0) |
877 | return r; | |
878 | ||
feb12d3e | 879 | #ifdef HAVE_GCRYPT |
5996c7c2 | 880 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY_ARRAY, o, q); |
b0af6f41 LP |
881 | if (r < 0) |
882 | return r; | |
feb12d3e | 883 | #endif |
b0af6f41 | 884 | |
de190aef | 885 | o->entry_array.items[i] = htole64(p); |
cec736d2 | 886 | |
de190aef | 887 | if (ap == 0) |
7be3aa17 | 888 | *first = htole64(q); |
cec736d2 | 889 | else { |
de190aef | 890 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, ap, &o); |
cec736d2 LP |
891 | if (r < 0) |
892 | return r; | |
893 | ||
de190aef LP |
894 | o->entry_array.next_entry_array_offset = htole64(q); |
895 | } | |
cec736d2 | 896 | |
2dee23eb LP |
897 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) |
898 | f->header->n_entry_arrays = htole64(le64toh(f->header->n_entry_arrays) + 1); | |
899 | ||
de190aef LP |
900 | *idx = htole64(hidx + 1); |
901 | ||
902 | return 0; | |
903 | } | |
cec736d2 | 904 | |
de190aef | 905 | static int link_entry_into_array_plus_one(JournalFile *f, |
4fd052ae FC |
906 | le64_t *extra, |
907 | le64_t *first, | |
908 | le64_t *idx, | |
de190aef LP |
909 | uint64_t p) { |
910 | ||
911 | int r; | |
912 | ||
913 | assert(f); | |
914 | assert(extra); | |
915 | assert(first); | |
916 | assert(idx); | |
917 | assert(p > 0); | |
918 | ||
919 | if (*idx == 0) | |
920 | *extra = htole64(p); | |
921 | else { | |
4fd052ae | 922 | le64_t i; |
de190aef | 923 | |
7be3aa17 | 924 | i = htole64(le64toh(*idx) - 1); |
de190aef LP |
925 | r = link_entry_into_array(f, first, &i, p); |
926 | if (r < 0) | |
927 | return r; | |
cec736d2 LP |
928 | } |
929 | ||
de190aef LP |
930 | *idx = htole64(le64toh(*idx) + 1); |
931 | return 0; | |
932 | } | |
933 | ||
934 | static int journal_file_link_entry_item(JournalFile *f, Object *o, uint64_t offset, uint64_t i) { | |
935 | uint64_t p; | |
936 | int r; | |
937 | assert(f); | |
938 | assert(o); | |
939 | assert(offset > 0); | |
940 | ||
941 | p = le64toh(o->entry.items[i].object_offset); | |
942 | if (p == 0) | |
943 | return -EINVAL; | |
944 | ||
945 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
cec736d2 LP |
946 | if (r < 0) |
947 | return r; | |
948 | ||
de190aef LP |
949 | return link_entry_into_array_plus_one(f, |
950 | &o->data.entry_offset, | |
951 | &o->data.entry_array_offset, | |
952 | &o->data.n_entries, | |
953 | offset); | |
cec736d2 LP |
954 | } |
955 | ||
956 | static int journal_file_link_entry(JournalFile *f, Object *o, uint64_t offset) { | |
de190aef | 957 | uint64_t n, i; |
cec736d2 LP |
958 | int r; |
959 | ||
960 | assert(f); | |
961 | assert(o); | |
962 | assert(offset > 0); | |
b588975f LP |
963 | |
964 | if (o->object.type != OBJECT_ENTRY) | |
965 | return -EINVAL; | |
cec736d2 | 966 | |
b788cc23 LP |
967 | __sync_synchronize(); |
968 | ||
cec736d2 | 969 | /* Link up the entry itself */ |
de190aef LP |
970 | r = link_entry_into_array(f, |
971 | &f->header->entry_array_offset, | |
972 | &f->header->n_entries, | |
973 | offset); | |
974 | if (r < 0) | |
975 | return r; | |
cec736d2 | 976 | |
aaf53376 | 977 | /* log_debug("=> %s seqnr=%lu n_entries=%lu", f->path, (unsigned long) o->entry.seqnum, (unsigned long) f->header->n_entries); */ |
cec736d2 | 978 | |
de190aef | 979 | if (f->header->head_entry_realtime == 0) |
0ac38b70 | 980 | f->header->head_entry_realtime = o->entry.realtime; |
cec736d2 | 981 | |
0ac38b70 | 982 | f->header->tail_entry_realtime = o->entry.realtime; |
de190aef LP |
983 | f->header->tail_entry_monotonic = o->entry.monotonic; |
984 | ||
985 | f->tail_entry_monotonic_valid = true; | |
cec736d2 LP |
986 | |
987 | /* Link up the items */ | |
988 | n = journal_file_entry_n_items(o); | |
989 | for (i = 0; i < n; i++) { | |
990 | r = journal_file_link_entry_item(f, o, offset, i); | |
991 | if (r < 0) | |
992 | return r; | |
993 | } | |
994 | ||
cec736d2 LP |
995 | return 0; |
996 | } | |
997 | ||
998 | static int journal_file_append_entry_internal( | |
999 | JournalFile *f, | |
1000 | const dual_timestamp *ts, | |
1001 | uint64_t xor_hash, | |
1002 | const EntryItem items[], unsigned n_items, | |
de190aef | 1003 | uint64_t *seqnum, |
cec736d2 LP |
1004 | Object **ret, uint64_t *offset) { |
1005 | uint64_t np; | |
1006 | uint64_t osize; | |
1007 | Object *o; | |
1008 | int r; | |
1009 | ||
1010 | assert(f); | |
1011 | assert(items || n_items == 0); | |
de190aef | 1012 | assert(ts); |
cec736d2 LP |
1013 | |
1014 | osize = offsetof(Object, entry.items) + (n_items * sizeof(EntryItem)); | |
1015 | ||
de190aef | 1016 | r = journal_file_append_object(f, OBJECT_ENTRY, osize, &o, &np); |
cec736d2 LP |
1017 | if (r < 0) |
1018 | return r; | |
1019 | ||
d98cc1f2 | 1020 | o->entry.seqnum = htole64(journal_file_entry_seqnum(f, seqnum)); |
cec736d2 | 1021 | memcpy(o->entry.items, items, n_items * sizeof(EntryItem)); |
de190aef LP |
1022 | o->entry.realtime = htole64(ts->realtime); |
1023 | o->entry.monotonic = htole64(ts->monotonic); | |
cec736d2 LP |
1024 | o->entry.xor_hash = htole64(xor_hash); |
1025 | o->entry.boot_id = f->header->boot_id; | |
1026 | ||
feb12d3e | 1027 | #ifdef HAVE_GCRYPT |
5996c7c2 | 1028 | r = journal_file_hmac_put_object(f, OBJECT_ENTRY, o, np); |
b0af6f41 LP |
1029 | if (r < 0) |
1030 | return r; | |
feb12d3e | 1031 | #endif |
b0af6f41 | 1032 | |
cec736d2 LP |
1033 | r = journal_file_link_entry(f, o, np); |
1034 | if (r < 0) | |
1035 | return r; | |
1036 | ||
1037 | if (ret) | |
1038 | *ret = o; | |
1039 | ||
1040 | if (offset) | |
1041 | *offset = np; | |
1042 | ||
1043 | return 0; | |
1044 | } | |
1045 | ||
cf244689 | 1046 | void journal_file_post_change(JournalFile *f) { |
50f20cfd LP |
1047 | assert(f); |
1048 | ||
1049 | /* inotify() does not receive IN_MODIFY events from file | |
1050 | * accesses done via mmap(). After each access we hence | |
1051 | * trigger IN_MODIFY by truncating the journal file to its | |
1052 | * current size which triggers IN_MODIFY. */ | |
1053 | ||
bc85bfee LP |
1054 | __sync_synchronize(); |
1055 | ||
50f20cfd | 1056 | if (ftruncate(f->fd, f->last_stat.st_size) < 0) |
c5315881 | 1057 | log_error("Failed to truncate file to its own size: %m"); |
50f20cfd LP |
1058 | } |
1059 | ||
1f2da9ec LP |
1060 | static int entry_item_cmp(const void *_a, const void *_b) { |
1061 | const EntryItem *a = _a, *b = _b; | |
1062 | ||
1063 | if (le64toh(a->object_offset) < le64toh(b->object_offset)) | |
1064 | return -1; | |
1065 | if (le64toh(a->object_offset) > le64toh(b->object_offset)) | |
1066 | return 1; | |
1067 | return 0; | |
1068 | } | |
1069 | ||
de190aef | 1070 | 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 |
1071 | unsigned i; |
1072 | EntryItem *items; | |
1073 | int r; | |
1074 | uint64_t xor_hash = 0; | |
de190aef | 1075 | struct dual_timestamp _ts; |
cec736d2 LP |
1076 | |
1077 | assert(f); | |
1078 | assert(iovec || n_iovec == 0); | |
1079 | ||
de190aef LP |
1080 | if (!f->writable) |
1081 | return -EPERM; | |
1082 | ||
1083 | if (!ts) { | |
1084 | dual_timestamp_get(&_ts); | |
1085 | ts = &_ts; | |
1086 | } | |
1087 | ||
1088 | if (f->tail_entry_monotonic_valid && | |
1089 | ts->monotonic < le64toh(f->header->tail_entry_monotonic)) | |
1090 | return -EINVAL; | |
1091 | ||
feb12d3e | 1092 | #ifdef HAVE_GCRYPT |
7560fffc LP |
1093 | r = journal_file_maybe_append_tag(f, ts->realtime); |
1094 | if (r < 0) | |
1095 | return r; | |
feb12d3e | 1096 | #endif |
7560fffc | 1097 | |
64825d3c LP |
1098 | /* alloca() can't take 0, hence let's allocate at least one */ |
1099 | items = alloca(sizeof(EntryItem) * MAX(1, n_iovec)); | |
cec736d2 LP |
1100 | |
1101 | for (i = 0; i < n_iovec; i++) { | |
1102 | uint64_t p; | |
1103 | Object *o; | |
1104 | ||
1105 | r = journal_file_append_data(f, iovec[i].iov_base, iovec[i].iov_len, &o, &p); | |
1106 | if (r < 0) | |
cf244689 | 1107 | return r; |
cec736d2 LP |
1108 | |
1109 | xor_hash ^= le64toh(o->data.hash); | |
1110 | items[i].object_offset = htole64(p); | |
de7b95cd | 1111 | items[i].hash = o->data.hash; |
cec736d2 LP |
1112 | } |
1113 | ||
1f2da9ec LP |
1114 | /* Order by the position on disk, in order to improve seek |
1115 | * times for rotating media. */ | |
1116 | qsort(items, n_iovec, sizeof(EntryItem), entry_item_cmp); | |
1117 | ||
de190aef | 1118 | r = journal_file_append_entry_internal(f, ts, xor_hash, items, n_iovec, seqnum, ret, offset); |
cec736d2 | 1119 | |
50f20cfd LP |
1120 | journal_file_post_change(f); |
1121 | ||
cec736d2 LP |
1122 | return r; |
1123 | } | |
1124 | ||
de190aef LP |
1125 | static int generic_array_get(JournalFile *f, |
1126 | uint64_t first, | |
1127 | uint64_t i, | |
1128 | Object **ret, uint64_t *offset) { | |
1129 | ||
cec736d2 | 1130 | Object *o; |
6c8a39b8 | 1131 | uint64_t p = 0, a; |
cec736d2 LP |
1132 | int r; |
1133 | ||
1134 | assert(f); | |
1135 | ||
de190aef LP |
1136 | a = first; |
1137 | while (a > 0) { | |
1138 | uint64_t n; | |
cec736d2 | 1139 | |
de190aef LP |
1140 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o); |
1141 | if (r < 0) | |
1142 | return r; | |
cec736d2 | 1143 | |
de190aef LP |
1144 | n = journal_file_entry_array_n_items(o); |
1145 | if (i < n) { | |
1146 | p = le64toh(o->entry_array.items[i]); | |
1147 | break; | |
cec736d2 LP |
1148 | } |
1149 | ||
de190aef LP |
1150 | i -= n; |
1151 | a = le64toh(o->entry_array.next_entry_array_offset); | |
1152 | } | |
1153 | ||
1154 | if (a <= 0 || p <= 0) | |
1155 | return 0; | |
1156 | ||
1157 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1158 | if (r < 0) | |
1159 | return r; | |
1160 | ||
1161 | if (ret) | |
1162 | *ret = o; | |
1163 | ||
1164 | if (offset) | |
1165 | *offset = p; | |
1166 | ||
1167 | return 1; | |
1168 | } | |
1169 | ||
1170 | static int generic_array_get_plus_one(JournalFile *f, | |
1171 | uint64_t extra, | |
1172 | uint64_t first, | |
1173 | uint64_t i, | |
1174 | Object **ret, uint64_t *offset) { | |
1175 | ||
1176 | Object *o; | |
1177 | ||
1178 | assert(f); | |
1179 | ||
1180 | if (i == 0) { | |
1181 | int r; | |
1182 | ||
1183 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
cec736d2 LP |
1184 | if (r < 0) |
1185 | return r; | |
1186 | ||
de190aef LP |
1187 | if (ret) |
1188 | *ret = o; | |
cec736d2 | 1189 | |
de190aef LP |
1190 | if (offset) |
1191 | *offset = extra; | |
cec736d2 | 1192 | |
de190aef | 1193 | return 1; |
cec736d2 LP |
1194 | } |
1195 | ||
de190aef LP |
1196 | return generic_array_get(f, first, i-1, ret, offset); |
1197 | } | |
cec736d2 | 1198 | |
de190aef LP |
1199 | enum { |
1200 | TEST_FOUND, | |
1201 | TEST_LEFT, | |
1202 | TEST_RIGHT | |
1203 | }; | |
cec736d2 | 1204 | |
de190aef LP |
1205 | static int generic_array_bisect(JournalFile *f, |
1206 | uint64_t first, | |
1207 | uint64_t n, | |
1208 | uint64_t needle, | |
1209 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1210 | direction_t direction, | |
1211 | Object **ret, | |
1212 | uint64_t *offset, | |
1213 | uint64_t *idx) { | |
1214 | ||
1215 | uint64_t a, p, t = 0, i = 0, last_p = 0; | |
1216 | bool subtract_one = false; | |
1217 | Object *o, *array = NULL; | |
1218 | int r; | |
cec736d2 | 1219 | |
de190aef LP |
1220 | assert(f); |
1221 | assert(test_object); | |
cec736d2 | 1222 | |
de190aef LP |
1223 | a = first; |
1224 | while (a > 0) { | |
1225 | uint64_t left, right, k, lp; | |
1226 | ||
1227 | r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &array); | |
cec736d2 LP |
1228 | if (r < 0) |
1229 | return r; | |
1230 | ||
de190aef LP |
1231 | k = journal_file_entry_array_n_items(array); |
1232 | right = MIN(k, n); | |
1233 | if (right <= 0) | |
1234 | return 0; | |
cec736d2 | 1235 | |
de190aef LP |
1236 | i = right - 1; |
1237 | lp = p = le64toh(array->entry_array.items[i]); | |
1238 | if (p <= 0) | |
1239 | return -EBADMSG; | |
cec736d2 | 1240 | |
de190aef LP |
1241 | r = test_object(f, p, needle); |
1242 | if (r < 0) | |
1243 | return r; | |
cec736d2 | 1244 | |
de190aef LP |
1245 | if (r == TEST_FOUND) |
1246 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1247 | ||
1248 | if (r == TEST_RIGHT) { | |
1249 | left = 0; | |
1250 | right -= 1; | |
1251 | for (;;) { | |
1252 | if (left == right) { | |
1253 | if (direction == DIRECTION_UP) | |
1254 | subtract_one = true; | |
1255 | ||
1256 | i = left; | |
1257 | goto found; | |
1258 | } | |
1259 | ||
1260 | assert(left < right); | |
1261 | ||
1262 | i = (left + right) / 2; | |
1263 | p = le64toh(array->entry_array.items[i]); | |
1264 | if (p <= 0) | |
1265 | return -EBADMSG; | |
1266 | ||
1267 | r = test_object(f, p, needle); | |
1268 | if (r < 0) | |
1269 | return r; | |
cec736d2 | 1270 | |
de190aef LP |
1271 | if (r == TEST_FOUND) |
1272 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1273 | ||
1274 | if (r == TEST_RIGHT) | |
1275 | right = i; | |
1276 | else | |
1277 | left = i + 1; | |
1278 | } | |
1279 | } | |
1280 | ||
cbdca852 LP |
1281 | if (k > n) { |
1282 | if (direction == DIRECTION_UP) { | |
1283 | i = n; | |
1284 | subtract_one = true; | |
1285 | goto found; | |
1286 | } | |
1287 | ||
cec736d2 | 1288 | return 0; |
cbdca852 | 1289 | } |
cec736d2 | 1290 | |
de190aef LP |
1291 | last_p = lp; |
1292 | ||
1293 | n -= k; | |
1294 | t += k; | |
1295 | a = le64toh(array->entry_array.next_entry_array_offset); | |
cec736d2 LP |
1296 | } |
1297 | ||
1298 | return 0; | |
de190aef LP |
1299 | |
1300 | found: | |
1301 | if (subtract_one && t == 0 && i == 0) | |
1302 | return 0; | |
1303 | ||
1304 | if (subtract_one && i == 0) | |
1305 | p = last_p; | |
1306 | else if (subtract_one) | |
1307 | p = le64toh(array->entry_array.items[i-1]); | |
1308 | else | |
1309 | p = le64toh(array->entry_array.items[i]); | |
1310 | ||
1311 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1312 | if (r < 0) | |
1313 | return r; | |
1314 | ||
1315 | if (ret) | |
1316 | *ret = o; | |
1317 | ||
1318 | if (offset) | |
1319 | *offset = p; | |
1320 | ||
1321 | if (idx) | |
cbdca852 | 1322 | *idx = t + i + (subtract_one ? -1 : 0); |
de190aef LP |
1323 | |
1324 | return 1; | |
cec736d2 LP |
1325 | } |
1326 | ||
de190aef LP |
1327 | static int generic_array_bisect_plus_one(JournalFile *f, |
1328 | uint64_t extra, | |
1329 | uint64_t first, | |
1330 | uint64_t n, | |
1331 | uint64_t needle, | |
1332 | int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle), | |
1333 | direction_t direction, | |
1334 | Object **ret, | |
1335 | uint64_t *offset, | |
1336 | uint64_t *idx) { | |
1337 | ||
cec736d2 | 1338 | int r; |
cbdca852 LP |
1339 | bool step_back = false; |
1340 | Object *o; | |
cec736d2 LP |
1341 | |
1342 | assert(f); | |
de190aef | 1343 | assert(test_object); |
cec736d2 | 1344 | |
de190aef LP |
1345 | if (n <= 0) |
1346 | return 0; | |
cec736d2 | 1347 | |
de190aef LP |
1348 | /* This bisects the array in object 'first', but first checks |
1349 | * an extra */ | |
de190aef LP |
1350 | r = test_object(f, extra, needle); |
1351 | if (r < 0) | |
1352 | return r; | |
a536e261 LP |
1353 | |
1354 | if (r == TEST_FOUND) | |
1355 | r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT; | |
1356 | ||
cbdca852 LP |
1357 | /* if we are looking with DIRECTION_UP then we need to first |
1358 | see if in the actual array there is a matching entry, and | |
1359 | return the last one of that. But if there isn't any we need | |
1360 | to return this one. Hence remember this, and return it | |
1361 | below. */ | |
1362 | if (r == TEST_LEFT) | |
1363 | step_back = direction == DIRECTION_UP; | |
de190aef | 1364 | |
cbdca852 LP |
1365 | if (r == TEST_RIGHT) { |
1366 | if (direction == DIRECTION_DOWN) | |
1367 | goto found; | |
1368 | else | |
1369 | return 0; | |
a536e261 | 1370 | } |
cec736d2 | 1371 | |
de190aef LP |
1372 | r = generic_array_bisect(f, first, n-1, needle, test_object, direction, ret, offset, idx); |
1373 | ||
cbdca852 LP |
1374 | if (r == 0 && step_back) |
1375 | goto found; | |
1376 | ||
ecf68b1d | 1377 | if (r > 0 && idx) |
de190aef LP |
1378 | (*idx) ++; |
1379 | ||
1380 | return r; | |
cbdca852 LP |
1381 | |
1382 | found: | |
1383 | r = journal_file_move_to_object(f, OBJECT_ENTRY, extra, &o); | |
1384 | if (r < 0) | |
1385 | return r; | |
1386 | ||
1387 | if (ret) | |
1388 | *ret = o; | |
1389 | ||
1390 | if (offset) | |
1391 | *offset = extra; | |
1392 | ||
1393 | if (idx) | |
1394 | *idx = 0; | |
1395 | ||
1396 | return 1; | |
1397 | } | |
1398 | ||
1399 | static int test_object_offset(JournalFile *f, uint64_t p, uint64_t needle) { | |
1400 | assert(f); | |
1401 | assert(p > 0); | |
1402 | ||
1403 | if (p == needle) | |
1404 | return TEST_FOUND; | |
1405 | else if (p < needle) | |
1406 | return TEST_LEFT; | |
1407 | else | |
1408 | return TEST_RIGHT; | |
1409 | } | |
1410 | ||
1411 | int journal_file_move_to_entry_by_offset( | |
1412 | JournalFile *f, | |
1413 | uint64_t p, | |
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 | p, | |
1422 | test_object_offset, | |
1423 | direction, | |
1424 | ret, offset, NULL); | |
de190aef LP |
1425 | } |
1426 | ||
cbdca852 | 1427 | |
de190aef LP |
1428 | static int test_object_seqnum(JournalFile *f, uint64_t p, uint64_t needle) { |
1429 | Object *o; | |
1430 | int r; | |
1431 | ||
1432 | assert(f); | |
1433 | assert(p > 0); | |
1434 | ||
1435 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
cec736d2 LP |
1436 | if (r < 0) |
1437 | return r; | |
1438 | ||
de190aef LP |
1439 | if (le64toh(o->entry.seqnum) == needle) |
1440 | return TEST_FOUND; | |
1441 | else if (le64toh(o->entry.seqnum) < needle) | |
1442 | return TEST_LEFT; | |
1443 | else | |
1444 | return TEST_RIGHT; | |
1445 | } | |
cec736d2 | 1446 | |
de190aef LP |
1447 | int journal_file_move_to_entry_by_seqnum( |
1448 | JournalFile *f, | |
1449 | uint64_t seqnum, | |
1450 | direction_t direction, | |
1451 | Object **ret, | |
1452 | uint64_t *offset) { | |
1453 | ||
1454 | return generic_array_bisect(f, | |
1455 | le64toh(f->header->entry_array_offset), | |
1456 | le64toh(f->header->n_entries), | |
1457 | seqnum, | |
1458 | test_object_seqnum, | |
1459 | direction, | |
1460 | ret, offset, NULL); | |
1461 | } | |
cec736d2 | 1462 | |
de190aef LP |
1463 | static int test_object_realtime(JournalFile *f, uint64_t p, uint64_t needle) { |
1464 | Object *o; | |
1465 | int r; | |
1466 | ||
1467 | assert(f); | |
1468 | assert(p > 0); | |
1469 | ||
1470 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1471 | if (r < 0) | |
1472 | return r; | |
1473 | ||
1474 | if (le64toh(o->entry.realtime) == needle) | |
1475 | return TEST_FOUND; | |
1476 | else if (le64toh(o->entry.realtime) < needle) | |
1477 | return TEST_LEFT; | |
1478 | else | |
1479 | return TEST_RIGHT; | |
cec736d2 LP |
1480 | } |
1481 | ||
de190aef LP |
1482 | int journal_file_move_to_entry_by_realtime( |
1483 | JournalFile *f, | |
1484 | uint64_t realtime, | |
1485 | direction_t direction, | |
1486 | Object **ret, | |
1487 | uint64_t *offset) { | |
1488 | ||
1489 | return generic_array_bisect(f, | |
1490 | le64toh(f->header->entry_array_offset), | |
1491 | le64toh(f->header->n_entries), | |
1492 | realtime, | |
1493 | test_object_realtime, | |
1494 | direction, | |
1495 | ret, offset, NULL); | |
1496 | } | |
1497 | ||
1498 | static int test_object_monotonic(JournalFile *f, uint64_t p, uint64_t needle) { | |
1499 | Object *o; | |
1500 | int r; | |
1501 | ||
1502 | assert(f); | |
1503 | assert(p > 0); | |
1504 | ||
1505 | r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o); | |
1506 | if (r < 0) | |
1507 | return r; | |
1508 | ||
1509 | if (le64toh(o->entry.monotonic) == needle) | |
1510 | return TEST_FOUND; | |
1511 | else if (le64toh(o->entry.monotonic) < needle) | |
1512 | return TEST_LEFT; | |
1513 | else | |
1514 | return TEST_RIGHT; | |
1515 | } | |
1516 | ||
1517 | int journal_file_move_to_entry_by_monotonic( | |
1518 | JournalFile *f, | |
1519 | sd_id128_t boot_id, | |
1520 | uint64_t monotonic, | |
1521 | direction_t direction, | |
1522 | Object **ret, | |
1523 | uint64_t *offset) { | |
1524 | ||
10b6f904 | 1525 | char t[9+32+1] = "_BOOT_ID="; |
de190aef LP |
1526 | Object *o; |
1527 | int r; | |
1528 | ||
cbdca852 | 1529 | assert(f); |
de190aef | 1530 | |
cbdca852 | 1531 | sd_id128_to_string(boot_id, t + 9); |
de190aef LP |
1532 | r = journal_file_find_data_object(f, t, strlen(t), &o, NULL); |
1533 | if (r < 0) | |
1534 | return r; | |
cbdca852 | 1535 | if (r == 0) |
de190aef LP |
1536 | return -ENOENT; |
1537 | ||
1538 | return generic_array_bisect_plus_one(f, | |
1539 | le64toh(o->data.entry_offset), | |
1540 | le64toh(o->data.entry_array_offset), | |
1541 | le64toh(o->data.n_entries), | |
1542 | monotonic, | |
1543 | test_object_monotonic, | |
1544 | direction, | |
1545 | ret, offset, NULL); | |
1546 | } | |
1547 | ||
de190aef LP |
1548 | int journal_file_next_entry( |
1549 | JournalFile *f, | |
1550 | Object *o, uint64_t p, | |
1551 | direction_t direction, | |
1552 | Object **ret, uint64_t *offset) { | |
1553 | ||
1554 | uint64_t i, n; | |
cec736d2 LP |
1555 | int r; |
1556 | ||
1557 | assert(f); | |
de190aef LP |
1558 | assert(p > 0 || !o); |
1559 | ||
1560 | n = le64toh(f->header->n_entries); | |
1561 | if (n <= 0) | |
1562 | return 0; | |
cec736d2 LP |
1563 | |
1564 | if (!o) | |
de190aef | 1565 | i = direction == DIRECTION_DOWN ? 0 : n - 1; |
cec736d2 | 1566 | else { |
de190aef | 1567 | if (o->object.type != OBJECT_ENTRY) |
cec736d2 LP |
1568 | return -EINVAL; |
1569 | ||
de190aef LP |
1570 | r = generic_array_bisect(f, |
1571 | le64toh(f->header->entry_array_offset), | |
1572 | le64toh(f->header->n_entries), | |
1573 | p, | |
1574 | test_object_offset, | |
1575 | DIRECTION_DOWN, | |
1576 | NULL, NULL, | |
1577 | &i); | |
1578 | if (r <= 0) | |
1579 | return r; | |
1580 | ||
1581 | if (direction == DIRECTION_DOWN) { | |
1582 | if (i >= n - 1) | |
1583 | return 0; | |
1584 | ||
1585 | i++; | |
1586 | } else { | |
1587 | if (i <= 0) | |
1588 | return 0; | |
1589 | ||
1590 | i--; | |
1591 | } | |
cec736d2 LP |
1592 | } |
1593 | ||
de190aef LP |
1594 | /* And jump to it */ |
1595 | return generic_array_get(f, | |
1596 | le64toh(f->header->entry_array_offset), | |
1597 | i, | |
1598 | ret, offset); | |
1599 | } | |
cec736d2 | 1600 | |
de190aef LP |
1601 | int journal_file_skip_entry( |
1602 | JournalFile *f, | |
1603 | Object *o, uint64_t p, | |
1604 | int64_t skip, | |
1605 | Object **ret, uint64_t *offset) { | |
1606 | ||
1607 | uint64_t i, n; | |
1608 | int r; | |
1609 | ||
1610 | assert(f); | |
1611 | assert(o); | |
1612 | assert(p > 0); | |
1613 | ||
1614 | if (o->object.type != OBJECT_ENTRY) | |
1615 | return -EINVAL; | |
1616 | ||
1617 | r = generic_array_bisect(f, | |
1618 | le64toh(f->header->entry_array_offset), | |
1619 | le64toh(f->header->n_entries), | |
1620 | p, | |
1621 | test_object_offset, | |
1622 | DIRECTION_DOWN, | |
1623 | NULL, NULL, | |
1624 | &i); | |
1625 | if (r <= 0) | |
cec736d2 LP |
1626 | return r; |
1627 | ||
de190aef LP |
1628 | /* Calculate new index */ |
1629 | if (skip < 0) { | |
1630 | if ((uint64_t) -skip >= i) | |
1631 | i = 0; | |
1632 | else | |
1633 | i = i - (uint64_t) -skip; | |
1634 | } else | |
1635 | i += (uint64_t) skip; | |
cec736d2 | 1636 | |
de190aef LP |
1637 | n = le64toh(f->header->n_entries); |
1638 | if (n <= 0) | |
1639 | return -EBADMSG; | |
cec736d2 | 1640 | |
de190aef LP |
1641 | if (i >= n) |
1642 | i = n-1; | |
1643 | ||
1644 | return generic_array_get(f, | |
1645 | le64toh(f->header->entry_array_offset), | |
1646 | i, | |
1647 | ret, offset); | |
cec736d2 LP |
1648 | } |
1649 | ||
de190aef LP |
1650 | int journal_file_next_entry_for_data( |
1651 | JournalFile *f, | |
1652 | Object *o, uint64_t p, | |
1653 | uint64_t data_offset, | |
1654 | direction_t direction, | |
1655 | Object **ret, uint64_t *offset) { | |
1656 | ||
1657 | uint64_t n, i; | |
cec736d2 | 1658 | int r; |
de190aef | 1659 | Object *d; |
cec736d2 LP |
1660 | |
1661 | assert(f); | |
de190aef | 1662 | assert(p > 0 || !o); |
cec736d2 | 1663 | |
de190aef | 1664 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
466ccd92 | 1665 | if (r < 0) |
de190aef | 1666 | return r; |
cec736d2 | 1667 | |
de190aef LP |
1668 | n = le64toh(d->data.n_entries); |
1669 | if (n <= 0) | |
1670 | return n; | |
cec736d2 | 1671 | |
de190aef LP |
1672 | if (!o) |
1673 | i = direction == DIRECTION_DOWN ? 0 : n - 1; | |
1674 | else { | |
1675 | if (o->object.type != OBJECT_ENTRY) | |
1676 | return -EINVAL; | |
cec736d2 | 1677 | |
de190aef LP |
1678 | r = generic_array_bisect_plus_one(f, |
1679 | le64toh(d->data.entry_offset), | |
1680 | le64toh(d->data.entry_array_offset), | |
1681 | le64toh(d->data.n_entries), | |
1682 | p, | |
1683 | test_object_offset, | |
1684 | DIRECTION_DOWN, | |
1685 | NULL, NULL, | |
1686 | &i); | |
1687 | ||
1688 | if (r <= 0) | |
cec736d2 LP |
1689 | return r; |
1690 | ||
de190aef LP |
1691 | if (direction == DIRECTION_DOWN) { |
1692 | if (i >= n - 1) | |
1693 | return 0; | |
cec736d2 | 1694 | |
de190aef LP |
1695 | i++; |
1696 | } else { | |
1697 | if (i <= 0) | |
1698 | return 0; | |
cec736d2 | 1699 | |
de190aef LP |
1700 | i--; |
1701 | } | |
cec736d2 | 1702 | |
de190aef | 1703 | } |
cec736d2 | 1704 | |
de190aef LP |
1705 | return generic_array_get_plus_one(f, |
1706 | le64toh(d->data.entry_offset), | |
1707 | le64toh(d->data.entry_array_offset), | |
1708 | i, | |
1709 | ret, offset); | |
1710 | } | |
cec736d2 | 1711 | |
cbdca852 LP |
1712 | int journal_file_move_to_entry_by_offset_for_data( |
1713 | JournalFile *f, | |
1714 | uint64_t data_offset, | |
1715 | uint64_t p, | |
1716 | direction_t direction, | |
1717 | Object **ret, uint64_t *offset) { | |
1718 | ||
1719 | int r; | |
1720 | Object *d; | |
1721 | ||
1722 | assert(f); | |
1723 | ||
1724 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1725 | if (r < 0) | |
1726 | return r; | |
1727 | ||
1728 | return generic_array_bisect_plus_one(f, | |
1729 | le64toh(d->data.entry_offset), | |
1730 | le64toh(d->data.entry_array_offset), | |
1731 | le64toh(d->data.n_entries), | |
1732 | p, | |
1733 | test_object_offset, | |
1734 | direction, | |
1735 | ret, offset, NULL); | |
1736 | } | |
1737 | ||
1738 | int journal_file_move_to_entry_by_monotonic_for_data( | |
1739 | JournalFile *f, | |
1740 | uint64_t data_offset, | |
1741 | sd_id128_t boot_id, | |
1742 | uint64_t monotonic, | |
1743 | direction_t direction, | |
1744 | Object **ret, uint64_t *offset) { | |
1745 | ||
1746 | char t[9+32+1] = "_BOOT_ID="; | |
1747 | Object *o, *d; | |
1748 | int r; | |
1749 | uint64_t b, z; | |
1750 | ||
1751 | assert(f); | |
1752 | ||
1753 | /* First, seek by time */ | |
1754 | sd_id128_to_string(boot_id, t + 9); | |
1755 | r = journal_file_find_data_object(f, t, strlen(t), &o, &b); | |
1756 | if (r < 0) | |
1757 | return r; | |
1758 | if (r == 0) | |
1759 | return -ENOENT; | |
1760 | ||
1761 | r = generic_array_bisect_plus_one(f, | |
1762 | le64toh(o->data.entry_offset), | |
1763 | le64toh(o->data.entry_array_offset), | |
1764 | le64toh(o->data.n_entries), | |
1765 | monotonic, | |
1766 | test_object_monotonic, | |
1767 | direction, | |
1768 | NULL, &z, NULL); | |
1769 | if (r <= 0) | |
1770 | return r; | |
1771 | ||
1772 | /* And now, continue seeking until we find an entry that | |
1773 | * exists in both bisection arrays */ | |
1774 | ||
1775 | for (;;) { | |
1776 | Object *qo; | |
1777 | uint64_t p, q; | |
1778 | ||
1779 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); | |
1780 | if (r < 0) | |
1781 | return r; | |
1782 | ||
1783 | r = generic_array_bisect_plus_one(f, | |
1784 | le64toh(d->data.entry_offset), | |
1785 | le64toh(d->data.entry_array_offset), | |
1786 | le64toh(d->data.n_entries), | |
1787 | z, | |
1788 | test_object_offset, | |
1789 | direction, | |
1790 | NULL, &p, NULL); | |
1791 | if (r <= 0) | |
1792 | return r; | |
1793 | ||
1794 | r = journal_file_move_to_object(f, OBJECT_DATA, b, &o); | |
1795 | if (r < 0) | |
1796 | return r; | |
1797 | ||
1798 | r = generic_array_bisect_plus_one(f, | |
1799 | le64toh(o->data.entry_offset), | |
1800 | le64toh(o->data.entry_array_offset), | |
1801 | le64toh(o->data.n_entries), | |
1802 | p, | |
1803 | test_object_offset, | |
1804 | direction, | |
1805 | &qo, &q, NULL); | |
1806 | ||
1807 | if (r <= 0) | |
1808 | return r; | |
1809 | ||
1810 | if (p == q) { | |
1811 | if (ret) | |
1812 | *ret = qo; | |
1813 | if (offset) | |
1814 | *offset = q; | |
1815 | ||
1816 | return 1; | |
1817 | } | |
1818 | ||
1819 | z = q; | |
1820 | } | |
1821 | ||
1822 | return 0; | |
1823 | } | |
1824 | ||
de190aef LP |
1825 | int journal_file_move_to_entry_by_seqnum_for_data( |
1826 | JournalFile *f, | |
1827 | uint64_t data_offset, | |
1828 | uint64_t seqnum, | |
1829 | direction_t direction, | |
1830 | Object **ret, uint64_t *offset) { | |
cec736d2 | 1831 | |
de190aef LP |
1832 | Object *d; |
1833 | int r; | |
cec736d2 | 1834 | |
91a31dde LP |
1835 | assert(f); |
1836 | ||
de190aef | 1837 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 1838 | if (r < 0) |
de190aef | 1839 | return r; |
cec736d2 | 1840 | |
de190aef LP |
1841 | return generic_array_bisect_plus_one(f, |
1842 | le64toh(d->data.entry_offset), | |
1843 | le64toh(d->data.entry_array_offset), | |
1844 | le64toh(d->data.n_entries), | |
1845 | seqnum, | |
1846 | test_object_seqnum, | |
1847 | direction, | |
1848 | ret, offset, NULL); | |
1849 | } | |
cec736d2 | 1850 | |
de190aef LP |
1851 | int journal_file_move_to_entry_by_realtime_for_data( |
1852 | JournalFile *f, | |
1853 | uint64_t data_offset, | |
1854 | uint64_t realtime, | |
1855 | direction_t direction, | |
1856 | Object **ret, uint64_t *offset) { | |
1857 | ||
1858 | Object *d; | |
1859 | int r; | |
1860 | ||
91a31dde LP |
1861 | assert(f); |
1862 | ||
de190aef | 1863 | r = journal_file_move_to_object(f, OBJECT_DATA, data_offset, &d); |
91a31dde | 1864 | if (r < 0) |
de190aef LP |
1865 | return r; |
1866 | ||
1867 | return generic_array_bisect_plus_one(f, | |
1868 | le64toh(d->data.entry_offset), | |
1869 | le64toh(d->data.entry_array_offset), | |
1870 | le64toh(d->data.n_entries), | |
1871 | realtime, | |
1872 | test_object_realtime, | |
1873 | direction, | |
1874 | ret, offset, NULL); | |
cec736d2 LP |
1875 | } |
1876 | ||
0284adc6 | 1877 | void journal_file_dump(JournalFile *f) { |
7560fffc | 1878 | Object *o; |
7560fffc | 1879 | int r; |
0284adc6 | 1880 | uint64_t p; |
7560fffc LP |
1881 | |
1882 | assert(f); | |
1883 | ||
0284adc6 | 1884 | journal_file_print_header(f); |
7560fffc | 1885 | |
0284adc6 LP |
1886 | p = le64toh(f->header->header_size); |
1887 | while (p != 0) { | |
1888 | r = journal_file_move_to_object(f, -1, p, &o); | |
1889 | if (r < 0) | |
1890 | goto fail; | |
7560fffc | 1891 | |
0284adc6 | 1892 | switch (o->object.type) { |
d98cc1f2 | 1893 | |
0284adc6 LP |
1894 | case OBJECT_UNUSED: |
1895 | printf("Type: OBJECT_UNUSED\n"); | |
1896 | break; | |
d98cc1f2 | 1897 | |
0284adc6 LP |
1898 | case OBJECT_DATA: |
1899 | printf("Type: OBJECT_DATA\n"); | |
1900 | break; | |
7560fffc | 1901 | |
0284adc6 | 1902 | case OBJECT_ENTRY: |
f7fab8a5 | 1903 | printf("Type: OBJECT_ENTRY seqnum=%llu monotonic=%llu realtime=%llu\n", |
0284adc6 LP |
1904 | (unsigned long long) le64toh(o->entry.seqnum), |
1905 | (unsigned long long) le64toh(o->entry.monotonic), | |
1906 | (unsigned long long) le64toh(o->entry.realtime)); | |
1907 | break; | |
7560fffc | 1908 | |
0284adc6 LP |
1909 | case OBJECT_FIELD_HASH_TABLE: |
1910 | printf("Type: OBJECT_FIELD_HASH_TABLE\n"); | |
1911 | break; | |
7560fffc | 1912 | |
0284adc6 LP |
1913 | case OBJECT_DATA_HASH_TABLE: |
1914 | printf("Type: OBJECT_DATA_HASH_TABLE\n"); | |
1915 | break; | |
7560fffc | 1916 | |
0284adc6 LP |
1917 | case OBJECT_ENTRY_ARRAY: |
1918 | printf("Type: OBJECT_ENTRY_ARRAY\n"); | |
1919 | break; | |
7560fffc | 1920 | |
0284adc6 | 1921 | case OBJECT_TAG: |
f7fab8a5 LP |
1922 | printf("Type: OBJECT_TAG seqnum=%llu epoch=%llu\n", |
1923 | (unsigned long long) le64toh(o->tag.seqnum), | |
1924 | (unsigned long long) le64toh(o->tag.epoch)); | |
0284adc6 LP |
1925 | break; |
1926 | } | |
7560fffc | 1927 | |
0284adc6 LP |
1928 | if (o->object.flags & OBJECT_COMPRESSED) |
1929 | printf("Flags: COMPRESSED\n"); | |
7560fffc | 1930 | |
0284adc6 LP |
1931 | if (p == le64toh(f->header->tail_object_offset)) |
1932 | p = 0; | |
1933 | else | |
1934 | p = p + ALIGN64(le64toh(o->object.size)); | |
1935 | } | |
7560fffc | 1936 | |
0284adc6 LP |
1937 | return; |
1938 | fail: | |
1939 | log_error("File corrupt"); | |
7560fffc LP |
1940 | } |
1941 | ||
0284adc6 LP |
1942 | void journal_file_print_header(JournalFile *f) { |
1943 | char a[33], b[33], c[33]; | |
1944 | char x[FORMAT_TIMESTAMP_MAX], y[FORMAT_TIMESTAMP_MAX]; | |
a1a03e30 LP |
1945 | struct stat st; |
1946 | char bytes[FORMAT_BYTES_MAX]; | |
7560fffc LP |
1947 | |
1948 | assert(f); | |
7560fffc | 1949 | |
0284adc6 LP |
1950 | printf("File Path: %s\n" |
1951 | "File ID: %s\n" | |
1952 | "Machine ID: %s\n" | |
1953 | "Boot ID: %s\n" | |
1954 | "Sequential Number ID: %s\n" | |
1955 | "State: %s\n" | |
1956 | "Compatible Flags:%s%s\n" | |
1957 | "Incompatible Flags:%s%s\n" | |
1958 | "Header size: %llu\n" | |
1959 | "Arena size: %llu\n" | |
1960 | "Data Hash Table Size: %llu\n" | |
1961 | "Field Hash Table Size: %llu\n" | |
0284adc6 LP |
1962 | "Rotate Suggested: %s\n" |
1963 | "Head Sequential Number: %llu\n" | |
1964 | "Tail Sequential Number: %llu\n" | |
1965 | "Head Realtime Timestamp: %s\n" | |
3223f44f LP |
1966 | "Tail Realtime Timestamp: %s\n" |
1967 | "Objects: %llu\n" | |
1968 | "Entry Objects: %llu\n", | |
0284adc6 LP |
1969 | f->path, |
1970 | sd_id128_to_string(f->header->file_id, a), | |
1971 | sd_id128_to_string(f->header->machine_id, b), | |
1972 | sd_id128_to_string(f->header->boot_id, c), | |
1973 | sd_id128_to_string(f->header->seqnum_id, c), | |
3223f44f LP |
1974 | f->header->state == STATE_OFFLINE ? "OFFLINE" : |
1975 | f->header->state == STATE_ONLINE ? "ONLINE" : | |
1976 | f->header->state == STATE_ARCHIVED ? "ARCHIVED" : "UNKNOWN", | |
8088cbd3 LP |
1977 | JOURNAL_HEADER_SEALED(f->header) ? " SEALED" : "", |
1978 | (le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) ? " ???" : "", | |
1979 | JOURNAL_HEADER_COMPRESSED(f->header) ? " COMPRESSED" : "", | |
1980 | (le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) ? " ???" : "", | |
0284adc6 LP |
1981 | (unsigned long long) le64toh(f->header->header_size), |
1982 | (unsigned long long) le64toh(f->header->arena_size), | |
1983 | (unsigned long long) le64toh(f->header->data_hash_table_size) / sizeof(HashItem), | |
1984 | (unsigned long long) le64toh(f->header->field_hash_table_size) / sizeof(HashItem), | |
fb0951b0 | 1985 | yes_no(journal_file_rotate_suggested(f, 0)), |
0284adc6 LP |
1986 | (unsigned long long) le64toh(f->header->head_entry_seqnum), |
1987 | (unsigned long long) le64toh(f->header->tail_entry_seqnum), | |
1988 | format_timestamp(x, sizeof(x), le64toh(f->header->head_entry_realtime)), | |
3223f44f LP |
1989 | format_timestamp(y, sizeof(y), le64toh(f->header->tail_entry_realtime)), |
1990 | (unsigned long long) le64toh(f->header->n_objects), | |
1991 | (unsigned long long) le64toh(f->header->n_entries)); | |
7560fffc | 1992 | |
0284adc6 LP |
1993 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) |
1994 | printf("Data Objects: %llu\n" | |
1995 | "Data Hash Table Fill: %.1f%%\n", | |
1996 | (unsigned long long) le64toh(f->header->n_data), | |
1997 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)))); | |
7560fffc | 1998 | |
0284adc6 LP |
1999 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) |
2000 | printf("Field Objects: %llu\n" | |
2001 | "Field Hash Table Fill: %.1f%%\n", | |
2002 | (unsigned long long) le64toh(f->header->n_fields), | |
2003 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)))); | |
3223f44f LP |
2004 | |
2005 | if (JOURNAL_HEADER_CONTAINS(f->header, n_tags)) | |
2006 | printf("Tag Objects: %llu\n", | |
2007 | (unsigned long long) le64toh(f->header->n_tags)); | |
2008 | if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays)) | |
2009 | printf("Entry Array Objects: %llu\n", | |
2010 | (unsigned long long) le64toh(f->header->n_entry_arrays)); | |
a1a03e30 LP |
2011 | |
2012 | if (fstat(f->fd, &st) >= 0) | |
2013 | printf("Disk usage: %s\n", format_bytes(bytes, sizeof(bytes), (off_t) st.st_blocks * 512ULL)); | |
7560fffc LP |
2014 | } |
2015 | ||
0284adc6 LP |
2016 | int journal_file_open( |
2017 | const char *fname, | |
2018 | int flags, | |
2019 | mode_t mode, | |
2020 | bool compress, | |
baed47c3 | 2021 | bool seal, |
0284adc6 LP |
2022 | JournalMetrics *metrics, |
2023 | MMapCache *mmap_cache, | |
2024 | JournalFile *template, | |
2025 | JournalFile **ret) { | |
7560fffc | 2026 | |
0284adc6 LP |
2027 | JournalFile *f; |
2028 | int r; | |
2029 | bool newly_created = false; | |
7560fffc | 2030 | |
0284adc6 | 2031 | assert(fname); |
0559d3a5 | 2032 | assert(ret); |
7560fffc | 2033 | |
0284adc6 LP |
2034 | if ((flags & O_ACCMODE) != O_RDONLY && |
2035 | (flags & O_ACCMODE) != O_RDWR) | |
2036 | return -EINVAL; | |
7560fffc | 2037 | |
a0108012 LP |
2038 | if (!endswith(fname, ".journal") && |
2039 | !endswith(fname, ".journal~")) | |
0284adc6 | 2040 | return -EINVAL; |
7560fffc | 2041 | |
0284adc6 LP |
2042 | f = new0(JournalFile, 1); |
2043 | if (!f) | |
2044 | return -ENOMEM; | |
7560fffc | 2045 | |
0284adc6 LP |
2046 | f->fd = -1; |
2047 | f->mode = mode; | |
7560fffc | 2048 | |
0284adc6 LP |
2049 | f->flags = flags; |
2050 | f->prot = prot_from_flags(flags); | |
2051 | f->writable = (flags & O_ACCMODE) != O_RDONLY; | |
48b61739 | 2052 | #ifdef HAVE_XZ |
0284adc6 | 2053 | f->compress = compress; |
48b61739 | 2054 | #endif |
49a32d43 | 2055 | #ifdef HAVE_GCRYPT |
baed47c3 | 2056 | f->seal = seal; |
49a32d43 | 2057 | #endif |
7560fffc | 2058 | |
0284adc6 LP |
2059 | if (mmap_cache) |
2060 | f->mmap = mmap_cache_ref(mmap_cache); | |
2061 | else { | |
84168d80 | 2062 | f->mmap = mmap_cache_new(); |
0284adc6 LP |
2063 | if (!f->mmap) { |
2064 | r = -ENOMEM; | |
2065 | goto fail; | |
2066 | } | |
2067 | } | |
7560fffc | 2068 | |
0284adc6 LP |
2069 | f->path = strdup(fname); |
2070 | if (!f->path) { | |
2071 | r = -ENOMEM; | |
2072 | goto fail; | |
2073 | } | |
7560fffc | 2074 | |
0284adc6 LP |
2075 | f->fd = open(f->path, f->flags|O_CLOEXEC, f->mode); |
2076 | if (f->fd < 0) { | |
2077 | r = -errno; | |
2078 | goto fail; | |
7560fffc | 2079 | } |
7560fffc | 2080 | |
0284adc6 LP |
2081 | if (fstat(f->fd, &f->last_stat) < 0) { |
2082 | r = -errno; | |
2083 | goto fail; | |
2084 | } | |
7560fffc | 2085 | |
0284adc6 | 2086 | if (f->last_stat.st_size == 0 && f->writable) { |
fb0951b0 LP |
2087 | #ifdef HAVE_XATTR |
2088 | uint64_t crtime; | |
2089 | ||
2090 | /* Let's attach the creation time to the journal file, | |
2091 | * so that the vacuuming code knows the age of this | |
2092 | * file even if the file might end up corrupted one | |
2093 | * day... Ideally we'd just use the creation time many | |
2094 | * file systems maintain for each file, but there is | |
2095 | * currently no usable API to query this, hence let's | |
2096 | * emulate this via extended attributes. If extended | |
2097 | * attributes are not supported we'll just skip this, | |
2098 | * and rely solely on mtime/atime/ctime of the file.*/ | |
2099 | ||
2100 | crtime = htole64((uint64_t) now(CLOCK_REALTIME)); | |
2101 | fsetxattr(f->fd, "user.crtime_usec", &crtime, sizeof(crtime), XATTR_CREATE); | |
2102 | #endif | |
7560fffc | 2103 | |
feb12d3e | 2104 | #ifdef HAVE_GCRYPT |
0284adc6 | 2105 | /* Try to load the FSPRG state, and if we can't, then |
baed47c3 | 2106 | * just don't do sealing */ |
49a32d43 LP |
2107 | if (f->seal) { |
2108 | r = journal_file_fss_load(f); | |
2109 | if (r < 0) | |
2110 | f->seal = false; | |
2111 | } | |
feb12d3e | 2112 | #endif |
7560fffc | 2113 | |
0284adc6 LP |
2114 | r = journal_file_init_header(f, template); |
2115 | if (r < 0) | |
2116 | goto fail; | |
7560fffc | 2117 | |
0284adc6 LP |
2118 | if (fstat(f->fd, &f->last_stat) < 0) { |
2119 | r = -errno; | |
2120 | goto fail; | |
2121 | } | |
fb0951b0 LP |
2122 | |
2123 | newly_created = true; | |
0284adc6 | 2124 | } |
7560fffc | 2125 | |
0284adc6 LP |
2126 | if (f->last_stat.st_size < (off_t) HEADER_SIZE_MIN) { |
2127 | r = -EIO; | |
2128 | goto fail; | |
2129 | } | |
7560fffc | 2130 | |
0284adc6 LP |
2131 | f->header = mmap(NULL, PAGE_ALIGN(sizeof(Header)), prot_from_flags(flags), MAP_SHARED, f->fd, 0); |
2132 | if (f->header == MAP_FAILED) { | |
2133 | f->header = NULL; | |
2134 | r = -errno; | |
2135 | goto fail; | |
2136 | } | |
7560fffc | 2137 | |
0284adc6 LP |
2138 | if (!newly_created) { |
2139 | r = journal_file_verify_header(f); | |
2140 | if (r < 0) | |
2141 | goto fail; | |
2142 | } | |
7560fffc | 2143 | |
feb12d3e | 2144 | #ifdef HAVE_GCRYPT |
0284adc6 | 2145 | if (!newly_created && f->writable) { |
baed47c3 | 2146 | r = journal_file_fss_load(f); |
0284adc6 LP |
2147 | if (r < 0) |
2148 | goto fail; | |
2149 | } | |
feb12d3e | 2150 | #endif |
cec736d2 LP |
2151 | |
2152 | if (f->writable) { | |
4a92baf3 LP |
2153 | if (metrics) { |
2154 | journal_default_metrics(metrics, f->fd); | |
2155 | f->metrics = *metrics; | |
2156 | } else if (template) | |
2157 | f->metrics = template->metrics; | |
2158 | ||
cec736d2 LP |
2159 | r = journal_file_refresh_header(f); |
2160 | if (r < 0) | |
2161 | goto fail; | |
2162 | } | |
2163 | ||
feb12d3e | 2164 | #ifdef HAVE_GCRYPT |
baed47c3 | 2165 | r = journal_file_hmac_setup(f); |
14d10188 LP |
2166 | if (r < 0) |
2167 | goto fail; | |
feb12d3e | 2168 | #endif |
14d10188 | 2169 | |
cec736d2 | 2170 | if (newly_created) { |
de190aef | 2171 | r = journal_file_setup_field_hash_table(f); |
cec736d2 LP |
2172 | if (r < 0) |
2173 | goto fail; | |
2174 | ||
de190aef | 2175 | r = journal_file_setup_data_hash_table(f); |
cec736d2 LP |
2176 | if (r < 0) |
2177 | goto fail; | |
7560fffc | 2178 | |
feb12d3e | 2179 | #ifdef HAVE_GCRYPT |
7560fffc LP |
2180 | r = journal_file_append_first_tag(f); |
2181 | if (r < 0) | |
2182 | goto fail; | |
feb12d3e | 2183 | #endif |
cec736d2 LP |
2184 | } |
2185 | ||
de190aef | 2186 | r = journal_file_map_field_hash_table(f); |
cec736d2 LP |
2187 | if (r < 0) |
2188 | goto fail; | |
2189 | ||
de190aef | 2190 | r = journal_file_map_data_hash_table(f); |
cec736d2 LP |
2191 | if (r < 0) |
2192 | goto fail; | |
2193 | ||
0559d3a5 | 2194 | *ret = f; |
cec736d2 LP |
2195 | return 0; |
2196 | ||
2197 | fail: | |
2198 | journal_file_close(f); | |
2199 | ||
2200 | return r; | |
2201 | } | |
0ac38b70 | 2202 | |
baed47c3 | 2203 | int journal_file_rotate(JournalFile **f, bool compress, bool seal) { |
0ac38b70 LP |
2204 | char *p; |
2205 | size_t l; | |
2206 | JournalFile *old_file, *new_file = NULL; | |
2207 | int r; | |
2208 | ||
2209 | assert(f); | |
2210 | assert(*f); | |
2211 | ||
2212 | old_file = *f; | |
2213 | ||
2214 | if (!old_file->writable) | |
2215 | return -EINVAL; | |
2216 | ||
2217 | if (!endswith(old_file->path, ".journal")) | |
2218 | return -EINVAL; | |
2219 | ||
2220 | l = strlen(old_file->path); | |
2221 | ||
9447a7f1 | 2222 | p = new(char, l + 1 + 32 + 1 + 16 + 1 + 16 + 1); |
0ac38b70 LP |
2223 | if (!p) |
2224 | return -ENOMEM; | |
2225 | ||
2226 | memcpy(p, old_file->path, l - 8); | |
2227 | p[l-8] = '@'; | |
2228 | sd_id128_to_string(old_file->header->seqnum_id, p + l - 8 + 1); | |
2229 | snprintf(p + l - 8 + 1 + 32, 1 + 16 + 1 + 16 + 8 + 1, | |
2230 | "-%016llx-%016llx.journal", | |
fb0951b0 LP |
2231 | (unsigned long long) le64toh((*f)->header->head_entry_seqnum), |
2232 | (unsigned long long) le64toh((*f)->header->head_entry_realtime)); | |
0ac38b70 LP |
2233 | |
2234 | r = rename(old_file->path, p); | |
2235 | free(p); | |
2236 | ||
2237 | if (r < 0) | |
2238 | return -errno; | |
2239 | ||
ccdbaf91 | 2240 | old_file->header->state = STATE_ARCHIVED; |
0ac38b70 | 2241 | |
baed47c3 | 2242 | 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 |
2243 | journal_file_close(old_file); |
2244 | ||
2245 | *f = new_file; | |
2246 | return r; | |
2247 | } | |
2248 | ||
9447a7f1 LP |
2249 | int journal_file_open_reliably( |
2250 | const char *fname, | |
2251 | int flags, | |
2252 | mode_t mode, | |
7560fffc | 2253 | bool compress, |
baed47c3 | 2254 | bool seal, |
4a92baf3 | 2255 | JournalMetrics *metrics, |
27370278 | 2256 | MMapCache *mmap_cache, |
9447a7f1 LP |
2257 | JournalFile *template, |
2258 | JournalFile **ret) { | |
2259 | ||
2260 | int r; | |
2261 | size_t l; | |
2262 | char *p; | |
2263 | ||
baed47c3 | 2264 | r = journal_file_open(fname, flags, mode, compress, seal, |
27370278 | 2265 | metrics, mmap_cache, template, ret); |
0071d9f1 LP |
2266 | if (r != -EBADMSG && /* corrupted */ |
2267 | r != -ENODATA && /* truncated */ | |
2268 | r != -EHOSTDOWN && /* other machine */ | |
a1a1898f LP |
2269 | r != -EPROTONOSUPPORT && /* incompatible feature */ |
2270 | r != -EBUSY && /* unclean shutdown */ | |
2271 | r != -ESHUTDOWN /* already archived */) | |
9447a7f1 LP |
2272 | return r; |
2273 | ||
2274 | if ((flags & O_ACCMODE) == O_RDONLY) | |
2275 | return r; | |
2276 | ||
2277 | if (!(flags & O_CREAT)) | |
2278 | return r; | |
2279 | ||
7560fffc LP |
2280 | if (!endswith(fname, ".journal")) |
2281 | return r; | |
2282 | ||
5c70eab4 LP |
2283 | /* The file is corrupted. Rotate it away and try it again (but only once) */ |
2284 | ||
9447a7f1 LP |
2285 | l = strlen(fname); |
2286 | if (asprintf(&p, "%.*s@%016llx-%016llx.journal~", | |
2287 | (int) (l-8), fname, | |
2288 | (unsigned long long) now(CLOCK_REALTIME), | |
2289 | random_ull()) < 0) | |
2290 | return -ENOMEM; | |
2291 | ||
2292 | r = rename(fname, p); | |
2293 | free(p); | |
2294 | if (r < 0) | |
2295 | return -errno; | |
2296 | ||
a1a1898f | 2297 | log_warning("File %s corrupted or uncleanly shut down, renaming and replacing.", fname); |
9447a7f1 | 2298 | |
baed47c3 | 2299 | return journal_file_open(fname, flags, mode, compress, seal, |
27370278 | 2300 | metrics, mmap_cache, template, ret); |
9447a7f1 LP |
2301 | } |
2302 | ||
cf244689 LP |
2303 | |
2304 | int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset) { | |
2305 | uint64_t i, n; | |
2306 | uint64_t q, xor_hash = 0; | |
2307 | int r; | |
2308 | EntryItem *items; | |
2309 | dual_timestamp ts; | |
2310 | ||
2311 | assert(from); | |
2312 | assert(to); | |
2313 | assert(o); | |
2314 | assert(p); | |
2315 | ||
2316 | if (!to->writable) | |
2317 | return -EPERM; | |
2318 | ||
2319 | ts.monotonic = le64toh(o->entry.monotonic); | |
2320 | ts.realtime = le64toh(o->entry.realtime); | |
2321 | ||
2322 | if (to->tail_entry_monotonic_valid && | |
2323 | ts.monotonic < le64toh(to->header->tail_entry_monotonic)) | |
2324 | return -EINVAL; | |
2325 | ||
cf244689 LP |
2326 | n = journal_file_entry_n_items(o); |
2327 | items = alloca(sizeof(EntryItem) * n); | |
2328 | ||
2329 | for (i = 0; i < n; i++) { | |
4fd052ae FC |
2330 | uint64_t l, h; |
2331 | le64_t le_hash; | |
cf244689 LP |
2332 | size_t t; |
2333 | void *data; | |
2334 | Object *u; | |
2335 | ||
2336 | q = le64toh(o->entry.items[i].object_offset); | |
2337 | le_hash = o->entry.items[i].hash; | |
2338 | ||
2339 | r = journal_file_move_to_object(from, OBJECT_DATA, q, &o); | |
2340 | if (r < 0) | |
2341 | return r; | |
2342 | ||
2343 | if (le_hash != o->data.hash) | |
2344 | return -EBADMSG; | |
2345 | ||
2346 | l = le64toh(o->object.size) - offsetof(Object, data.payload); | |
2347 | t = (size_t) l; | |
2348 | ||
2349 | /* We hit the limit on 32bit machines */ | |
2350 | if ((uint64_t) t != l) | |
2351 | return -E2BIG; | |
2352 | ||
2353 | if (o->object.flags & OBJECT_COMPRESSED) { | |
2354 | #ifdef HAVE_XZ | |
2355 | uint64_t rsize; | |
2356 | ||
2357 | if (!uncompress_blob(o->data.payload, l, &from->compress_buffer, &from->compress_buffer_size, &rsize)) | |
2358 | return -EBADMSG; | |
2359 | ||
2360 | data = from->compress_buffer; | |
2361 | l = rsize; | |
2362 | #else | |
2363 | return -EPROTONOSUPPORT; | |
2364 | #endif | |
2365 | } else | |
2366 | data = o->data.payload; | |
2367 | ||
2368 | r = journal_file_append_data(to, data, l, &u, &h); | |
2369 | if (r < 0) | |
2370 | return r; | |
2371 | ||
2372 | xor_hash ^= le64toh(u->data.hash); | |
2373 | items[i].object_offset = htole64(h); | |
2374 | items[i].hash = u->data.hash; | |
2375 | ||
2376 | r = journal_file_move_to_object(from, OBJECT_ENTRY, p, &o); | |
2377 | if (r < 0) | |
2378 | return r; | |
2379 | } | |
2380 | ||
2381 | return journal_file_append_entry_internal(to, &ts, xor_hash, items, n, seqnum, ret, offset); | |
2382 | } | |
babfc091 LP |
2383 | |
2384 | void journal_default_metrics(JournalMetrics *m, int fd) { | |
2385 | uint64_t fs_size = 0; | |
2386 | struct statvfs ss; | |
a7bc2c2a | 2387 | char a[FORMAT_BYTES_MAX], b[FORMAT_BYTES_MAX], c[FORMAT_BYTES_MAX], d[FORMAT_BYTES_MAX]; |
babfc091 LP |
2388 | |
2389 | assert(m); | |
2390 | assert(fd >= 0); | |
2391 | ||
2392 | if (fstatvfs(fd, &ss) >= 0) | |
2393 | fs_size = ss.f_frsize * ss.f_blocks; | |
2394 | ||
2395 | if (m->max_use == (uint64_t) -1) { | |
2396 | ||
2397 | if (fs_size > 0) { | |
2398 | m->max_use = PAGE_ALIGN(fs_size / 10); /* 10% of file system size */ | |
2399 | ||
2400 | if (m->max_use > DEFAULT_MAX_USE_UPPER) | |
2401 | m->max_use = DEFAULT_MAX_USE_UPPER; | |
2402 | ||
2403 | if (m->max_use < DEFAULT_MAX_USE_LOWER) | |
2404 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2405 | } else | |
2406 | m->max_use = DEFAULT_MAX_USE_LOWER; | |
2407 | } else { | |
2408 | m->max_use = PAGE_ALIGN(m->max_use); | |
2409 | ||
2410 | if (m->max_use < JOURNAL_FILE_SIZE_MIN*2) | |
2411 | m->max_use = JOURNAL_FILE_SIZE_MIN*2; | |
2412 | } | |
2413 | ||
2414 | if (m->max_size == (uint64_t) -1) { | |
2415 | m->max_size = PAGE_ALIGN(m->max_use / 8); /* 8 chunks */ | |
2416 | ||
2417 | if (m->max_size > DEFAULT_MAX_SIZE_UPPER) | |
2418 | m->max_size = DEFAULT_MAX_SIZE_UPPER; | |
2419 | } else | |
2420 | m->max_size = PAGE_ALIGN(m->max_size); | |
2421 | ||
2422 | if (m->max_size < JOURNAL_FILE_SIZE_MIN) | |
2423 | m->max_size = JOURNAL_FILE_SIZE_MIN; | |
2424 | ||
2425 | if (m->max_size*2 > m->max_use) | |
2426 | m->max_use = m->max_size*2; | |
2427 | ||
2428 | if (m->min_size == (uint64_t) -1) | |
2429 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2430 | else { | |
2431 | m->min_size = PAGE_ALIGN(m->min_size); | |
2432 | ||
2433 | if (m->min_size < JOURNAL_FILE_SIZE_MIN) | |
2434 | m->min_size = JOURNAL_FILE_SIZE_MIN; | |
2435 | ||
2436 | if (m->min_size > m->max_size) | |
2437 | m->max_size = m->min_size; | |
2438 | } | |
2439 | ||
2440 | if (m->keep_free == (uint64_t) -1) { | |
2441 | ||
2442 | if (fs_size > 0) { | |
2443 | m->keep_free = PAGE_ALIGN(fs_size / 20); /* 5% of file system size */ | |
2444 | ||
2445 | if (m->keep_free > DEFAULT_KEEP_FREE_UPPER) | |
2446 | m->keep_free = DEFAULT_KEEP_FREE_UPPER; | |
2447 | ||
2448 | } else | |
2449 | m->keep_free = DEFAULT_KEEP_FREE; | |
2450 | } | |
2451 | ||
2b43f939 LP |
2452 | log_debug("Fixed max_use=%s max_size=%s min_size=%s keep_free=%s", |
2453 | format_bytes(a, sizeof(a), m->max_use), | |
2454 | format_bytes(b, sizeof(b), m->max_size), | |
2455 | format_bytes(c, sizeof(c), m->min_size), | |
2456 | format_bytes(d, sizeof(d), m->keep_free)); | |
babfc091 | 2457 | } |
08984293 LP |
2458 | |
2459 | int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to) { | |
08984293 LP |
2460 | assert(f); |
2461 | assert(from || to); | |
2462 | ||
2463 | if (from) { | |
162566a4 LP |
2464 | if (f->header->head_entry_realtime == 0) |
2465 | return -ENOENT; | |
08984293 | 2466 | |
162566a4 | 2467 | *from = le64toh(f->header->head_entry_realtime); |
08984293 LP |
2468 | } |
2469 | ||
2470 | if (to) { | |
162566a4 LP |
2471 | if (f->header->tail_entry_realtime == 0) |
2472 | return -ENOENT; | |
08984293 | 2473 | |
162566a4 | 2474 | *to = le64toh(f->header->tail_entry_realtime); |
08984293 LP |
2475 | } |
2476 | ||
2477 | return 1; | |
2478 | } | |
2479 | ||
2480 | int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot_id, usec_t *from, usec_t *to) { | |
2481 | char t[9+32+1] = "_BOOT_ID="; | |
2482 | Object *o; | |
2483 | uint64_t p; | |
2484 | int r; | |
2485 | ||
2486 | assert(f); | |
2487 | assert(from || to); | |
2488 | ||
2489 | sd_id128_to_string(boot_id, t + 9); | |
2490 | ||
2491 | r = journal_file_find_data_object(f, t, strlen(t), &o, &p); | |
2492 | if (r <= 0) | |
2493 | return r; | |
2494 | ||
2495 | if (le64toh(o->data.n_entries) <= 0) | |
2496 | return 0; | |
2497 | ||
2498 | if (from) { | |
2499 | r = journal_file_move_to_object(f, OBJECT_ENTRY, le64toh(o->data.entry_offset), &o); | |
2500 | if (r < 0) | |
2501 | return r; | |
2502 | ||
2503 | *from = le64toh(o->entry.monotonic); | |
2504 | } | |
2505 | ||
2506 | if (to) { | |
2507 | r = journal_file_move_to_object(f, OBJECT_DATA, p, &o); | |
2508 | if (r < 0) | |
2509 | return r; | |
2510 | ||
2511 | r = generic_array_get_plus_one(f, | |
2512 | le64toh(o->data.entry_offset), | |
2513 | le64toh(o->data.entry_array_offset), | |
2514 | le64toh(o->data.n_entries)-1, | |
2515 | &o, NULL); | |
2516 | if (r <= 0) | |
2517 | return r; | |
2518 | ||
2519 | *to = le64toh(o->entry.monotonic); | |
2520 | } | |
2521 | ||
2522 | return 1; | |
2523 | } | |
dca6219e | 2524 | |
fb0951b0 | 2525 | bool journal_file_rotate_suggested(JournalFile *f, usec_t max_file_usec) { |
dca6219e LP |
2526 | assert(f); |
2527 | ||
2528 | /* If we gained new header fields we gained new features, | |
2529 | * hence suggest a rotation */ | |
361f9cbc LP |
2530 | if (le64toh(f->header->header_size) < sizeof(Header)) { |
2531 | log_debug("%s uses an outdated header, suggesting rotation.", f->path); | |
dca6219e | 2532 | return true; |
361f9cbc | 2533 | } |
dca6219e LP |
2534 | |
2535 | /* Let's check if the hash tables grew over a certain fill | |
2536 | * level (75%, borrowing this value from Java's hash table | |
2537 | * implementation), and if so suggest a rotation. To calculate | |
2538 | * the fill level we need the n_data field, which only exists | |
2539 | * in newer versions. */ | |
2540 | ||
2541 | if (JOURNAL_HEADER_CONTAINS(f->header, n_data)) | |
361f9cbc LP |
2542 | if (le64toh(f->header->n_data) * 4ULL > (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
2543 | 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.", | |
2544 | f->path, | |
2545 | 100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem))), | |
2546 | (unsigned long long) le64toh(f->header->n_data), | |
2547 | (unsigned long long) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)), | |
2548 | (unsigned long long) (f->last_stat.st_size), | |
2549 | (unsigned long long) (f->last_stat.st_size / le64toh(f->header->n_data))); | |
dca6219e | 2550 | return true; |
361f9cbc | 2551 | } |
dca6219e LP |
2552 | |
2553 | if (JOURNAL_HEADER_CONTAINS(f->header, n_fields)) | |
361f9cbc LP |
2554 | if (le64toh(f->header->n_fields) * 4ULL > (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)) * 3ULL) { |
2555 | log_debug("Field hash table of %s has a fill level at %.1f (%llu of %llu items), suggesting rotation.", | |
2556 | f->path, | |
2557 | 100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))), | |
2558 | (unsigned long long) le64toh(f->header->n_fields), | |
2559 | (unsigned long long) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))); | |
dca6219e | 2560 | return true; |
361f9cbc | 2561 | } |
dca6219e | 2562 | |
fb0951b0 LP |
2563 | if (max_file_usec > 0) { |
2564 | usec_t t, h; | |
2565 | ||
2566 | h = le64toh(f->header->head_entry_realtime); | |
2567 | t = now(CLOCK_REALTIME); | |
2568 | ||
2569 | if (h > 0 && t > h + max_file_usec) | |
2570 | return true; | |
2571 | } | |
2572 | ||
dca6219e LP |
2573 | return false; |
2574 | } |