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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
e594a3b1 LP |
2 | |
3 | #if HAVE_VALGRIND_MEMCHECK_H | |
4 | #include <valgrind/memcheck.h> | |
5 | #endif | |
6 | ||
7 | #include <fcntl.h> | |
8 | #include <getopt.h> | |
e594a3b1 LP |
9 | #include <linux/fs.h> |
10 | #include <linux/loop.h> | |
11 | #include <sys/file.h> | |
12 | #include <sys/ioctl.h> | |
13 | #include <sys/stat.h> | |
14 | ||
1a037ba2 | 15 | #include "sd-device.h" |
e594a3b1 LP |
16 | #include "sd-id128.h" |
17 | ||
18 | #include "alloc-util.h" | |
19 | #include "blkid-util.h" | |
20 | #include "blockdev-util.h" | |
21 | #include "btrfs-util.h" | |
f4351959 | 22 | #include "chase-symlinks.h" |
e594a3b1 LP |
23 | #include "conf-files.h" |
24 | #include "conf-parser.h" | |
1e2f3230 | 25 | #include "cryptsetup-util.h" |
e594a3b1 | 26 | #include "def.h" |
ca822829 | 27 | #include "device-util.h" |
7176f06c | 28 | #include "devnum-util.h" |
5c08da58 | 29 | #include "dirent-util.h" |
e594a3b1 LP |
30 | #include "efivars.h" |
31 | #include "errno-util.h" | |
32 | #include "fd-util.h" | |
4dc07c3a | 33 | #include "fdisk-util.h" |
b9df3536 | 34 | #include "fileio.h" |
e594a3b1 LP |
35 | #include "format-table.h" |
36 | #include "format-util.h" | |
37 | #include "fs-util.h" | |
d8e32c47 | 38 | #include "glyph-util.h" |
e594a3b1 | 39 | #include "gpt.h" |
889914ef | 40 | #include "hexdecoct.h" |
ade99252 | 41 | #include "hmac.h" |
e594a3b1 | 42 | #include "id128-util.h" |
a015fbe7 | 43 | #include "json.h" |
e594a3b1 | 44 | #include "list.h" |
53171c04 | 45 | #include "loop-util.h" |
e594a3b1 | 46 | #include "main-func.h" |
8a794850 | 47 | #include "mkdir.h" |
53171c04 | 48 | #include "mkfs-util.h" |
8a794850 | 49 | #include "mount-util.h" |
5c08da58 | 50 | #include "mountpoint-util.h" |
614b022c | 51 | #include "parse-argument.h" |
c3eaba2d | 52 | #include "parse-helpers.h" |
e594a3b1 LP |
53 | #include "pretty-print.h" |
54 | #include "proc-cmdline.h" | |
8a794850 | 55 | #include "process-util.h" |
b9df3536 | 56 | #include "random-util.h" |
170c9823 | 57 | #include "resize-fs.h" |
e594a3b1 | 58 | #include "sort-util.h" |
e031166e | 59 | #include "specifier.h" |
e594a3b1 | 60 | #include "stdio-util.h" |
889914ef | 61 | #include "string-table.h" |
e594a3b1 LP |
62 | #include "string-util.h" |
63 | #include "strv.h" | |
bf819d3a | 64 | #include "sync-util.h" |
e594a3b1 | 65 | #include "terminal-util.h" |
889914ef | 66 | #include "tpm2-util.h" |
8a794850 | 67 | #include "user-util.h" |
e594a3b1 LP |
68 | #include "utf8.h" |
69 | ||
fb08381c LP |
70 | /* If not configured otherwise use a minimal partition size of 10M */ |
71 | #define DEFAULT_MIN_SIZE (10*1024*1024) | |
72 | ||
73 | /* Hard lower limit for new partition sizes */ | |
74 | #define HARD_MIN_SIZE 4096 | |
75 | ||
69e3234d | 76 | /* libfdisk takes off slightly more than 1M of the disk size when creating a GPT disk label */ |
170c9823 LP |
77 | #define GPT_METADATA_SIZE (1044*1024) |
78 | ||
79 | /* LUKS2 takes off 16M of the partition size with its metadata by default */ | |
80 | #define LUKS2_METADATA_SIZE (16*1024*1024) | |
81 | ||
e594a3b1 LP |
82 | /* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks |
83 | * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B | |
84 | * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll | |
85 | * waste 3K per partition, which is probably fine. */ | |
86 | ||
87 | static enum { | |
88 | EMPTY_REFUSE, /* refuse empty disks, never create a partition table */ | |
89 | EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */ | |
90 | EMPTY_REQUIRE, /* require an empty disk, create a partition table */ | |
91 | EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */ | |
a26f4a49 | 92 | EMPTY_CREATE, /* create disk as loopback file, create a partition table always */ |
e594a3b1 LP |
93 | } arg_empty = EMPTY_REFUSE; |
94 | ||
95 | static bool arg_dry_run = true; | |
96 | static const char *arg_node = NULL; | |
97 | static char *arg_root = NULL; | |
252d6267 | 98 | static char *arg_image = NULL; |
224c853f | 99 | static char **arg_definitions = NULL; |
e594a3b1 LP |
100 | static bool arg_discard = true; |
101 | static bool arg_can_factory_reset = false; | |
102 | static int arg_factory_reset = -1; | |
103 | static sd_id128_t arg_seed = SD_ID128_NULL; | |
104 | static bool arg_randomize = false; | |
105 | static int arg_pretty = -1; | |
a26f4a49 | 106 | static uint64_t arg_size = UINT64_MAX; |
170c9823 | 107 | static bool arg_size_auto = false; |
6a01ea4a | 108 | static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; |
896e678b LP |
109 | static PagerFlags arg_pager_flags = 0; |
110 | static bool arg_legend = true; | |
b9df3536 LP |
111 | static void *arg_key = NULL; |
112 | static size_t arg_key_size = 0; | |
889914ef LP |
113 | static char *arg_tpm2_device = NULL; |
114 | static uint32_t arg_tpm2_pcr_mask = UINT32_MAX; | |
e594a3b1 LP |
115 | |
116 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 117 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
224c853f | 118 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep); |
b9df3536 | 119 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
889914ef | 120 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
e594a3b1 LP |
121 | |
122 | typedef struct Partition Partition; | |
123 | typedef struct FreeArea FreeArea; | |
124 | typedef struct Context Context; | |
125 | ||
889914ef LP |
126 | typedef enum EncryptMode { |
127 | ENCRYPT_OFF, | |
128 | ENCRYPT_KEY_FILE, | |
129 | ENCRYPT_TPM2, | |
130 | ENCRYPT_KEY_FILE_TPM2, | |
131 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 132 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
133 | } EncryptMode; |
134 | ||
b5b7879a DDM |
135 | typedef enum VerityMode { |
136 | VERITY_OFF, | |
137 | VERITY_DATA, | |
138 | VERITY_HASH, | |
139 | _VERITY_MODE_MAX, | |
140 | _VERITY_MODE_INVALID = -EINVAL, | |
141 | } VerityMode; | |
142 | ||
e594a3b1 LP |
143 | struct Partition { |
144 | char *definition_path; | |
39fc0174 | 145 | char **drop_in_files; |
e594a3b1 LP |
146 | |
147 | sd_id128_t type_uuid; | |
148 | sd_id128_t current_uuid, new_uuid; | |
11749b61 | 149 | bool new_uuid_is_set; |
e594a3b1 LP |
150 | char *current_label, *new_label; |
151 | ||
152 | bool dropped; | |
153 | bool factory_reset; | |
154 | int32_t priority; | |
155 | ||
156 | uint32_t weight, padding_weight; | |
157 | ||
158 | uint64_t current_size, new_size; | |
159 | uint64_t size_min, size_max; | |
160 | ||
161 | uint64_t current_padding, new_padding; | |
162 | uint64_t padding_min, padding_max; | |
163 | ||
164 | uint64_t partno; | |
165 | uint64_t offset; | |
166 | ||
167 | struct fdisk_partition *current_partition; | |
168 | struct fdisk_partition *new_partition; | |
169 | FreeArea *padding_area; | |
170 | FreeArea *allocated_to_area; | |
171 | ||
757bc2e4 | 172 | char *copy_blocks_path; |
5c08da58 | 173 | bool copy_blocks_auto; |
757bc2e4 LP |
174 | int copy_blocks_fd; |
175 | uint64_t copy_blocks_size; | |
176 | ||
53171c04 | 177 | char *format; |
8a794850 | 178 | char **copy_files; |
d83d8048 | 179 | char **make_directories; |
889914ef | 180 | EncryptMode encrypt; |
b5b7879a DDM |
181 | VerityMode verity; |
182 | char *verity_match_key; | |
53171c04 | 183 | |
e73309c5 | 184 | uint64_t gpt_flags; |
ff0771bf | 185 | int no_auto; |
e73309c5 | 186 | int read_only; |
1c41c1dc | 187 | int growfs; |
e73309c5 | 188 | |
b5b7879a DDM |
189 | uint8_t *roothash; |
190 | size_t roothash_size; | |
191 | ||
192 | Partition *siblings[_VERITY_MODE_MAX]; | |
193 | ||
e594a3b1 LP |
194 | LIST_FIELDS(Partition, partitions); |
195 | }; | |
196 | ||
197 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
198 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
199 | ||
200 | struct FreeArea { | |
201 | Partition *after; | |
202 | uint64_t size; | |
203 | uint64_t allocated; | |
204 | }; | |
205 | ||
206 | struct Context { | |
207 | LIST_HEAD(Partition, partitions); | |
208 | size_t n_partitions; | |
209 | ||
210 | FreeArea **free_areas; | |
319a4f4b | 211 | size_t n_free_areas; |
e594a3b1 LP |
212 | |
213 | uint64_t start, end, total; | |
214 | ||
215 | struct fdisk_context *fdisk_context; | |
994b3031 LP |
216 | uint64_t sector_size; |
217 | uint64_t grain_size; | |
e594a3b1 LP |
218 | |
219 | sd_id128_t seed; | |
220 | }; | |
221 | ||
889914ef LP |
222 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
223 | [ENCRYPT_OFF] = "off", | |
224 | [ENCRYPT_KEY_FILE] = "key-file", | |
225 | [ENCRYPT_TPM2] = "tpm2", | |
226 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
227 | }; | |
228 | ||
b5b7879a DDM |
229 | static const char *verity_mode_table[_VERITY_MODE_MAX] = { |
230 | [VERITY_OFF] = "off", | |
231 | [VERITY_DATA] = "data", | |
232 | [VERITY_HASH] = "hash", | |
233 | }; | |
234 | ||
2709d029 | 235 | #if HAVE_LIBCRYPTSETUP |
889914ef | 236 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); |
b5b7879a | 237 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode); |
2709d029 MH |
238 | #else |
239 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); | |
b5b7879a | 240 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(verity_mode, VerityMode); |
2709d029 MH |
241 | #endif |
242 | ||
889914ef | 243 | |
e594a3b1 LP |
244 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
245 | return (v / p) * p; | |
246 | } | |
247 | ||
248 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
249 | ||
250 | v = DIV_ROUND_UP(v, p); | |
251 | ||
252 | if (v > UINT64_MAX / p) | |
253 | return UINT64_MAX; /* overflow */ | |
254 | ||
255 | return v * p; | |
256 | } | |
257 | ||
258 | static Partition *partition_new(void) { | |
259 | Partition *p; | |
260 | ||
261 | p = new(Partition, 1); | |
262 | if (!p) | |
263 | return NULL; | |
264 | ||
265 | *p = (Partition) { | |
266 | .weight = 1000, | |
267 | .padding_weight = 0, | |
268 | .current_size = UINT64_MAX, | |
269 | .new_size = UINT64_MAX, | |
270 | .size_min = UINT64_MAX, | |
271 | .size_max = UINT64_MAX, | |
272 | .current_padding = UINT64_MAX, | |
273 | .new_padding = UINT64_MAX, | |
274 | .padding_min = UINT64_MAX, | |
275 | .padding_max = UINT64_MAX, | |
276 | .partno = UINT64_MAX, | |
277 | .offset = UINT64_MAX, | |
757bc2e4 LP |
278 | .copy_blocks_fd = -1, |
279 | .copy_blocks_size = UINT64_MAX, | |
ff0771bf | 280 | .no_auto = -1, |
e73309c5 | 281 | .read_only = -1, |
1c41c1dc | 282 | .growfs = -1, |
e594a3b1 LP |
283 | }; |
284 | ||
285 | return p; | |
286 | } | |
287 | ||
288 | static Partition* partition_free(Partition *p) { | |
289 | if (!p) | |
290 | return NULL; | |
291 | ||
292 | free(p->current_label); | |
293 | free(p->new_label); | |
294 | free(p->definition_path); | |
39fc0174 | 295 | strv_free(p->drop_in_files); |
e594a3b1 LP |
296 | |
297 | if (p->current_partition) | |
298 | fdisk_unref_partition(p->current_partition); | |
299 | if (p->new_partition) | |
300 | fdisk_unref_partition(p->new_partition); | |
301 | ||
757bc2e4 LP |
302 | free(p->copy_blocks_path); |
303 | safe_close(p->copy_blocks_fd); | |
304 | ||
53171c04 | 305 | free(p->format); |
8a794850 | 306 | strv_free(p->copy_files); |
d83d8048 | 307 | strv_free(p->make_directories); |
b5b7879a DDM |
308 | free(p->verity_match_key); |
309 | ||
310 | free(p->roothash); | |
53171c04 | 311 | |
e594a3b1 LP |
312 | return mfree(p); |
313 | } | |
314 | ||
315 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { | |
316 | if (!p) | |
317 | return NULL; | |
318 | ||
319 | LIST_REMOVE(partitions, context->partitions, p); | |
320 | ||
321 | assert(context->n_partitions > 0); | |
322 | context->n_partitions--; | |
323 | ||
324 | return partition_free(p); | |
325 | } | |
326 | ||
327 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
328 | ||
329 | static Context *context_new(sd_id128_t seed) { | |
330 | Context *context; | |
331 | ||
332 | context = new(Context, 1); | |
333 | if (!context) | |
334 | return NULL; | |
335 | ||
336 | *context = (Context) { | |
337 | .start = UINT64_MAX, | |
338 | .end = UINT64_MAX, | |
339 | .total = UINT64_MAX, | |
340 | .seed = seed, | |
341 | }; | |
342 | ||
343 | return context; | |
344 | } | |
345 | ||
346 | static void context_free_free_areas(Context *context) { | |
347 | assert(context); | |
348 | ||
349 | for (size_t i = 0; i < context->n_free_areas; i++) | |
350 | free(context->free_areas[i]); | |
351 | ||
352 | context->free_areas = mfree(context->free_areas); | |
353 | context->n_free_areas = 0; | |
e594a3b1 LP |
354 | } |
355 | ||
356 | static Context *context_free(Context *context) { | |
357 | if (!context) | |
358 | return NULL; | |
359 | ||
360 | while (context->partitions) | |
361 | partition_unlink_and_free(context, context->partitions); | |
362 | assert(context->n_partitions == 0); | |
363 | ||
364 | context_free_free_areas(context); | |
365 | ||
366 | if (context->fdisk_context) | |
367 | fdisk_unref_context(context->fdisk_context); | |
368 | ||
369 | return mfree(context); | |
370 | } | |
371 | ||
372 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
373 | ||
374 | static int context_add_free_area( | |
375 | Context *context, | |
376 | uint64_t size, | |
377 | Partition *after) { | |
378 | ||
379 | FreeArea *a; | |
380 | ||
381 | assert(context); | |
382 | assert(!after || !after->padding_area); | |
383 | ||
319a4f4b | 384 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
385 | return -ENOMEM; |
386 | ||
387 | a = new(FreeArea, 1); | |
388 | if (!a) | |
389 | return -ENOMEM; | |
390 | ||
391 | *a = (FreeArea) { | |
392 | .size = size, | |
393 | .after = after, | |
394 | }; | |
395 | ||
396 | context->free_areas[context->n_free_areas++] = a; | |
397 | ||
398 | if (after) | |
399 | after->padding_area = a; | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
404 | static bool context_drop_one_priority(Context *context) { | |
405 | int32_t priority = 0; | |
e594a3b1 LP |
406 | bool exists = false; |
407 | ||
408 | LIST_FOREACH(partitions, p, context->partitions) { | |
409 | if (p->dropped) | |
410 | continue; | |
411 | if (p->priority < priority) | |
412 | continue; | |
413 | if (p->priority == priority) { | |
414 | exists = exists || PARTITION_EXISTS(p); | |
415 | continue; | |
416 | } | |
417 | ||
418 | priority = p->priority; | |
419 | exists = PARTITION_EXISTS(p); | |
420 | } | |
421 | ||
422 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
423 | * least one existing priority */ | |
424 | if (priority <= 0 || exists) | |
425 | return false; | |
426 | ||
427 | LIST_FOREACH(partitions, p, context->partitions) { | |
428 | if (p->priority < priority) | |
429 | continue; | |
430 | ||
431 | if (p->dropped) | |
432 | continue; | |
433 | ||
434 | p->dropped = true; | |
435 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", p->definition_path, p->priority); | |
b5b7879a DDM |
436 | |
437 | /* We ensure that all verity sibling partitions have the same priority, so it's safe | |
438 | * to drop all siblings here as well. */ | |
439 | ||
440 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
441 | if (!p->siblings[mode]) | |
442 | continue; | |
443 | ||
444 | if (p->siblings[mode]->dropped) | |
445 | continue; | |
446 | ||
447 | p->siblings[mode]->dropped = true; | |
448 | log_info("Also dropping sibling verity %s partition %s", | |
449 | verity_mode_to_string(mode), p->siblings[mode]->definition_path); | |
450 | } | |
e594a3b1 LP |
451 | } |
452 | ||
453 | return true; | |
454 | } | |
455 | ||
994b3031 | 456 | static uint64_t partition_min_size(Context *context, const Partition *p) { |
e594a3b1 LP |
457 | uint64_t sz; |
458 | ||
994b3031 LP |
459 | assert(context); |
460 | assert(p); | |
461 | ||
e594a3b1 LP |
462 | /* Calculate the disk space we really need at minimum for this partition. If the partition already |
463 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
464 | * than 4K. |
465 | * | |
466 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
467 | |
468 | if (PARTITION_IS_FOREIGN(p)) { | |
469 | /* Don't allow changing size of partitions not managed by us */ | |
470 | assert(p->current_size != UINT64_MAX); | |
471 | return p->current_size; | |
472 | } | |
473 | ||
fb08381c | 474 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 475 | |
170c9823 LP |
476 | if (!PARTITION_EXISTS(p)) { |
477 | uint64_t d = 0; | |
478 | ||
889914ef | 479 | if (p->encrypt != ENCRYPT_OFF) |
994b3031 | 480 | d += round_up_size(LUKS2_METADATA_SIZE, context->grain_size); |
170c9823 LP |
481 | |
482 | if (p->copy_blocks_size != UINT64_MAX) | |
994b3031 | 483 | d += round_up_size(p->copy_blocks_size, context->grain_size); |
889914ef | 484 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
485 | uint64_t f; |
486 | ||
487 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
994b3031 LP |
488 | f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX; |
489 | d += f == UINT64_MAX ? context->grain_size : f; | |
170c9823 LP |
490 | } |
491 | ||
492 | if (d > sz) | |
493 | sz = d; | |
494 | } | |
757bc2e4 | 495 | |
994b3031 | 496 | return MAX(round_up_size(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, context->grain_size), sz); |
e594a3b1 LP |
497 | } |
498 | ||
994b3031 LP |
499 | static uint64_t partition_max_size(const Context *context, const Partition *p) { |
500 | uint64_t sm; | |
501 | ||
e594a3b1 LP |
502 | /* Calculate how large the partition may become at max. This is generally the configured maximum |
503 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
504 | * since we never want to shrink partitions. */ | |
505 | ||
994b3031 LP |
506 | assert(context); |
507 | assert(p); | |
508 | ||
e594a3b1 LP |
509 | if (PARTITION_IS_FOREIGN(p)) { |
510 | /* Don't allow changing size of partitions not managed by us */ | |
511 | assert(p->current_size != UINT64_MAX); | |
512 | return p->current_size; | |
513 | } | |
514 | ||
994b3031 LP |
515 | sm = round_down_size(p->size_max, context->grain_size); |
516 | ||
e594a3b1 | 517 | if (p->current_size != UINT64_MAX) |
994b3031 | 518 | return MAX(p->current_size, sm); |
e594a3b1 | 519 | |
994b3031 | 520 | return sm; |
e594a3b1 LP |
521 | } |
522 | ||
994b3031 | 523 | static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) { |
e594a3b1 LP |
524 | uint64_t sz; |
525 | ||
526 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
527 | * takes user configured padding into account as well as any additional whitespace needed to align | |
528 | * the next partition to 4K again. */ | |
529 | ||
994b3031 LP |
530 | assert(context); |
531 | assert(p); | |
532 | ||
533 | sz = partition_min_size(context, p); | |
e594a3b1 LP |
534 | |
535 | if (p->padding_min != UINT64_MAX) | |
536 | sz += p->padding_min; | |
537 | ||
538 | if (PARTITION_EXISTS(p)) { | |
539 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
540 | assert(p->offset != UINT64_MAX); | |
994b3031 | 541 | return round_up_size(p->offset + sz, context->grain_size) - p->offset; |
e594a3b1 LP |
542 | } |
543 | ||
544 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
994b3031 | 545 | return round_up_size(sz, context->grain_size); |
e594a3b1 LP |
546 | } |
547 | ||
548 | static uint64_t free_area_available(const FreeArea *a) { | |
549 | assert(a); | |
550 | ||
551 | /* Determines how much of this free area is not allocated yet */ | |
552 | ||
553 | assert(a->size >= a->allocated); | |
554 | return a->size - a->allocated; | |
555 | } | |
556 | ||
994b3031 | 557 | static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) { |
e594a3b1 LP |
558 | uint64_t avail; |
559 | ||
994b3031 LP |
560 | assert(context); |
561 | assert(a); | |
562 | ||
e594a3b1 | 563 | /* Similar to free_area_available(), but takes into account that the required size and padding of the |
162392b7 | 564 | * preceding partition is honoured. */ |
e594a3b1 LP |
565 | |
566 | avail = free_area_available(a); | |
567 | if (a->after) { | |
1052a114 | 568 | uint64_t need, space_end, new_end; |
e594a3b1 | 569 | |
994b3031 | 570 | need = partition_min_size_with_padding(context, a->after); |
e594a3b1 LP |
571 | |
572 | assert(a->after->offset != UINT64_MAX); | |
573 | assert(a->after->current_size != UINT64_MAX); | |
574 | ||
1052a114 | 575 | /* Calculate where the free area ends, based on the offset of the partition preceding it */ |
994b3031 | 576 | space_end = round_up_size(a->after->offset + a->after->current_size, context->grain_size) + avail; |
e594a3b1 | 577 | |
1052a114 | 578 | /* Calculate where the partition would end when we give it as much as it needs */ |
994b3031 | 579 | new_end = round_up_size(a->after->offset + need, context->grain_size); |
1052a114 LP |
580 | |
581 | /* Calculate saturated difference of the two: that's how much we have free for other partitions */ | |
582 | return LESS_BY(space_end, new_end); | |
e594a3b1 LP |
583 | } |
584 | ||
585 | return avail; | |
586 | } | |
587 | ||
994b3031 LP |
588 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) { |
589 | assert(context); | |
590 | ||
591 | return CMP(free_area_available_for_new_partitions(context, *a), | |
592 | free_area_available_for_new_partitions(context, *b)); | |
e594a3b1 LP |
593 | } |
594 | ||
994b3031 LP |
595 | static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) { |
596 | assert(context); | |
e594a3b1 | 597 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ |
184cf99a | 598 | assert(amount <= total); |
994b3031 | 599 | return LESS_BY(total, round_up_size(amount, context->grain_size)); |
e594a3b1 LP |
600 | } |
601 | ||
602 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
603 | assert(amount <= total); | |
604 | return total - amount; | |
605 | } | |
606 | ||
14a4c4ed | 607 | static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) { |
e594a3b1 LP |
608 | assert(context); |
609 | ||
14a4c4ed | 610 | /* Sort free areas by size, putting smallest first */ |
994b3031 | 611 | typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context); |
e594a3b1 | 612 | |
14a4c4ed LP |
613 | /* In any case return size of the largest free area (i.e. not the size of all free areas |
614 | * combined!) */ | |
615 | if (ret_largest_free_area) | |
616 | *ret_largest_free_area = | |
617 | context->n_free_areas == 0 ? 0 : | |
994b3031 | 618 | free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]); |
14a4c4ed LP |
619 | |
620 | /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */ | |
e594a3b1 LP |
621 | LIST_FOREACH(partitions, p, context->partitions) { |
622 | bool fits = false; | |
623 | uint64_t required; | |
624 | FreeArea *a = NULL; | |
625 | ||
626 | /* Skip partitions we already dropped or that already exist */ | |
627 | if (p->dropped || PARTITION_EXISTS(p)) | |
628 | continue; | |
629 | ||
e594a3b1 | 630 | /* How much do we need to fit? */ |
994b3031 LP |
631 | required = partition_min_size_with_padding(context, p); |
632 | assert(required % context->grain_size == 0); | |
e594a3b1 LP |
633 | |
634 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
635 | a = context->free_areas[i]; | |
636 | ||
994b3031 | 637 | if (free_area_available_for_new_partitions(context, a) >= required) { |
e594a3b1 LP |
638 | fits = true; |
639 | break; | |
640 | } | |
641 | } | |
642 | ||
643 | if (!fits) | |
644 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
645 | ||
646 | /* Assign the partition to this free area */ | |
647 | p->allocated_to_area = a; | |
648 | ||
649 | /* Budget the minimal partition size */ | |
650 | a->allocated += required; | |
651 | } | |
652 | ||
653 | return true; | |
654 | } | |
655 | ||
656 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
657 | uint64_t weight_sum = 0; | |
e594a3b1 LP |
658 | |
659 | assert(context); | |
660 | assert(a); | |
661 | assert(ret); | |
662 | ||
663 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
664 | ||
665 | LIST_FOREACH(partitions, p, context->partitions) { | |
666 | if (p->padding_area != a && p->allocated_to_area != a) | |
667 | continue; | |
668 | ||
669 | if (p->weight > UINT64_MAX - weight_sum) | |
670 | goto overflow_sum; | |
671 | weight_sum += p->weight; | |
672 | ||
673 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
674 | goto overflow_sum; | |
675 | weight_sum += p->padding_weight; | |
676 | } | |
677 | ||
678 | *ret = weight_sum; | |
679 | return 0; | |
680 | ||
681 | overflow_sum: | |
682 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64bit range, refusing."); | |
683 | } | |
684 | ||
685 | static int scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum, uint64_t *ret) { | |
686 | assert(weight_sum >= weight); | |
687 | assert(ret); | |
688 | ||
689 | if (weight == 0) { | |
690 | *ret = 0; | |
691 | return 0; | |
692 | } | |
693 | ||
694 | if (value > UINT64_MAX / weight) | |
695 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Scaling by weight of partition exceeds unsigned 64bit range, refusing."); | |
696 | ||
697 | *ret = value * weight / weight_sum; | |
698 | return 0; | |
699 | } | |
700 | ||
701 | typedef enum GrowPartitionPhase { | |
702 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ | |
703 | PHASE_OVERCHARGE, | |
704 | ||
705 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
706 | PHASE_UNDERCHARGE, | |
707 | ||
708 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
709 | PHASE_DISTRIBUTE, | |
ae0613c6 LP |
710 | |
711 | _GROW_PARTITION_PHASE_MAX, | |
e594a3b1 LP |
712 | } GrowPartitionPhase; |
713 | ||
714 | static int context_grow_partitions_phase( | |
715 | Context *context, | |
716 | FreeArea *a, | |
717 | GrowPartitionPhase phase, | |
718 | uint64_t *span, | |
719 | uint64_t *weight_sum) { | |
720 | ||
e594a3b1 LP |
721 | int r; |
722 | ||
723 | assert(context); | |
724 | assert(a); | |
725 | ||
726 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
727 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
728 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
729 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
730 | LIST_FOREACH(partitions, p, context->partitions) { | |
731 | ||
732 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 733 | * preceding it, or allocated into it */ |
e594a3b1 LP |
734 | if (p->allocated_to_area != a && p->padding_area != a) |
735 | continue; | |
736 | ||
737 | if (p->new_size == UINT64_MAX) { | |
738 | bool charge = false, try_again = false; | |
739 | uint64_t share, rsz, xsz; | |
740 | ||
741 | /* Calculate how much this space this partition needs if everyone would get | |
742 | * the weight based share */ | |
743 | r = scale_by_weight(*span, p->weight, *weight_sum, &share); | |
744 | if (r < 0) | |
745 | return r; | |
746 | ||
994b3031 LP |
747 | rsz = partition_min_size(context, p); |
748 | xsz = partition_max_size(context, p); | |
e594a3b1 LP |
749 | |
750 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
751 | /* This partition needs more than its calculated share. Let's assign | |
752 | * it that, and take this partition out of all calculations and start | |
753 | * again. */ | |
754 | ||
755 | p->new_size = rsz; | |
756 | charge = try_again = true; | |
757 | ||
758 | } else if (phase == PHASE_UNDERCHARGE && xsz != UINT64_MAX && xsz < share) { | |
759 | /* This partition accepts less than its calculated | |
760 | * share. Let's assign it that, and take this partition out | |
761 | * of all calculations and start again. */ | |
762 | ||
763 | p->new_size = xsz; | |
764 | charge = try_again = true; | |
765 | ||
766 | } else if (phase == PHASE_DISTRIBUTE) { | |
767 | /* This partition can accept its calculated share. Let's | |
768 | * assign it. There's no need to restart things here since | |
769 | * assigning this shouldn't impact the shares of the other | |
770 | * partitions. */ | |
771 | ||
772 | if (PARTITION_IS_FOREIGN(p)) | |
773 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
774 | p->new_size = p->current_size; | |
775 | else | |
994b3031 | 776 | p->new_size = MAX(round_down_size(share, context->grain_size), rsz); |
e594a3b1 LP |
777 | |
778 | charge = true; | |
779 | } | |
780 | ||
781 | if (charge) { | |
994b3031 | 782 | *span = charge_size(context, *span, p->new_size); |
e594a3b1 LP |
783 | *weight_sum = charge_weight(*weight_sum, p->weight); |
784 | } | |
785 | ||
786 | if (try_again) | |
787 | return 0; /* try again */ | |
788 | } | |
789 | ||
790 | if (p->new_padding == UINT64_MAX) { | |
791 | bool charge = false, try_again = false; | |
792 | uint64_t share; | |
793 | ||
794 | r = scale_by_weight(*span, p->padding_weight, *weight_sum, &share); | |
795 | if (r < 0) | |
796 | return r; | |
797 | ||
798 | if (phase == PHASE_OVERCHARGE && p->padding_min != UINT64_MAX && p->padding_min > share) { | |
799 | p->new_padding = p->padding_min; | |
800 | charge = try_again = true; | |
801 | } else if (phase == PHASE_UNDERCHARGE && p->padding_max != UINT64_MAX && p->padding_max < share) { | |
802 | p->new_padding = p->padding_max; | |
803 | charge = try_again = true; | |
804 | } else if (phase == PHASE_DISTRIBUTE) { | |
805 | ||
994b3031 | 806 | p->new_padding = round_down_size(share, context->grain_size); |
e594a3b1 LP |
807 | if (p->padding_min != UINT64_MAX && p->new_padding < p->padding_min) |
808 | p->new_padding = p->padding_min; | |
809 | ||
810 | charge = true; | |
811 | } | |
812 | ||
813 | if (charge) { | |
994b3031 | 814 | *span = charge_size(context, *span, p->new_padding); |
e594a3b1 LP |
815 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); |
816 | } | |
817 | ||
818 | if (try_again) | |
819 | return 0; /* try again */ | |
820 | } | |
821 | } | |
822 | ||
823 | return 1; /* done */ | |
824 | } | |
825 | ||
826 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { | |
827 | uint64_t weight_sum = 0, span; | |
828 | int r; | |
829 | ||
830 | assert(context); | |
831 | assert(a); | |
832 | ||
833 | r = context_sum_weights(context, a, &weight_sum); | |
834 | if (r < 0) | |
835 | return r; | |
836 | ||
837 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
838 | span = a->size; | |
839 | if (a->after) { | |
840 | assert(a->after->offset != UINT64_MAX); | |
841 | assert(a->after->current_size != UINT64_MAX); | |
842 | ||
994b3031 | 843 | span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset; |
e594a3b1 LP |
844 | } |
845 | ||
ae0613c6 | 846 | for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;) { |
e594a3b1 LP |
847 | r = context_grow_partitions_phase(context, a, phase, &span, &weight_sum); |
848 | if (r < 0) | |
849 | return r; | |
850 | if (r == 0) /* not done yet, re-run this phase */ | |
851 | continue; | |
852 | ||
ae0613c6 | 853 | phase++; /* got to next phase */ |
e594a3b1 LP |
854 | } |
855 | ||
162392b7 | 856 | /* We still have space left over? Donate to preceding partition if we have one */ |
e594a3b1 LP |
857 | if (span > 0 && a->after && !PARTITION_IS_FOREIGN(a->after)) { |
858 | uint64_t m, xsz; | |
859 | ||
860 | assert(a->after->new_size != UINT64_MAX); | |
0b7f574f LP |
861 | |
862 | /* Calculate new size and align (but ensure this doesn't shrink the size) */ | |
994b3031 | 863 | m = MAX(a->after->new_size, round_down_size(a->after->new_size + span, context->grain_size)); |
e594a3b1 | 864 | |
994b3031 | 865 | xsz = partition_max_size(context, a->after); |
e594a3b1 LP |
866 | if (xsz != UINT64_MAX && m > xsz) |
867 | m = xsz; | |
868 | ||
994b3031 | 869 | span = charge_size(context, span, m - a->after->new_size); |
e594a3b1 LP |
870 | a->after->new_size = m; |
871 | } | |
872 | ||
162392b7 | 873 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 | 874 | * size limit), then let's donate it to whoever wants it. */ |
03677889 | 875 | if (span > 0) |
e594a3b1 LP |
876 | LIST_FOREACH(partitions, p, context->partitions) { |
877 | uint64_t m, xsz; | |
878 | ||
879 | if (p->allocated_to_area != a) | |
880 | continue; | |
881 | ||
882 | if (PARTITION_IS_FOREIGN(p)) | |
883 | continue; | |
884 | ||
885 | assert(p->new_size != UINT64_MAX); | |
994b3031 | 886 | m = MAX(p->new_size, round_down_size(p->new_size + span, context->grain_size)); |
e594a3b1 | 887 | |
994b3031 | 888 | xsz = partition_max_size(context, p); |
e594a3b1 LP |
889 | if (xsz != UINT64_MAX && m > xsz) |
890 | m = xsz; | |
891 | ||
994b3031 | 892 | span = charge_size(context, span, m - p->new_size); |
e594a3b1 LP |
893 | p->new_size = m; |
894 | ||
895 | if (span == 0) | |
896 | break; | |
897 | } | |
e594a3b1 | 898 | |
162392b7 | 899 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
900 | if (span > 0 && a->after) { |
901 | assert(a->after->new_padding != UINT64_MAX); | |
902 | a->after->new_padding += span; | |
903 | } | |
904 | ||
905 | return 0; | |
906 | } | |
907 | ||
908 | static int context_grow_partitions(Context *context) { | |
e594a3b1 LP |
909 | int r; |
910 | ||
911 | assert(context); | |
912 | ||
913 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
914 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
915 | if (r < 0) | |
916 | return r; | |
917 | } | |
918 | ||
919 | /* All existing partitions that have no free space after them can't change size */ | |
920 | LIST_FOREACH(partitions, p, context->partitions) { | |
921 | if (p->dropped) | |
922 | continue; | |
923 | ||
924 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
925 | /* The algorithm above must have initialized this already */ | |
926 | assert(p->new_size != UINT64_MAX); | |
927 | continue; | |
928 | } | |
929 | ||
930 | assert(p->new_size == UINT64_MAX); | |
931 | p->new_size = p->current_size; | |
932 | ||
933 | assert(p->new_padding == UINT64_MAX); | |
934 | p->new_padding = p->current_padding; | |
935 | } | |
936 | ||
937 | return 0; | |
938 | } | |
939 | ||
940 | static void context_place_partitions(Context *context) { | |
941 | uint64_t partno = 0; | |
e594a3b1 LP |
942 | |
943 | assert(context); | |
944 | ||
945 | /* Determine next partition number to assign */ | |
946 | LIST_FOREACH(partitions, p, context->partitions) { | |
947 | if (!PARTITION_EXISTS(p)) | |
948 | continue; | |
949 | ||
950 | assert(p->partno != UINT64_MAX); | |
951 | if (p->partno >= partno) | |
952 | partno = p->partno + 1; | |
953 | } | |
954 | ||
955 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
956 | FreeArea *a = context->free_areas[i]; | |
2ea7eb00 FS |
957 | _unused_ uint64_t left; |
958 | uint64_t start; | |
e594a3b1 LP |
959 | |
960 | if (a->after) { | |
961 | assert(a->after->offset != UINT64_MAX); | |
962 | assert(a->after->new_size != UINT64_MAX); | |
963 | assert(a->after->new_padding != UINT64_MAX); | |
964 | ||
965 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
966 | } else | |
967 | start = context->start; | |
968 | ||
994b3031 | 969 | start = round_up_size(start, context->grain_size); |
e594a3b1 LP |
970 | left = a->size; |
971 | ||
972 | LIST_FOREACH(partitions, p, context->partitions) { | |
973 | if (p->allocated_to_area != a) | |
974 | continue; | |
975 | ||
976 | p->offset = start; | |
977 | p->partno = partno++; | |
978 | ||
979 | assert(left >= p->new_size); | |
980 | start += p->new_size; | |
981 | left -= p->new_size; | |
982 | ||
983 | assert(left >= p->new_padding); | |
984 | start += p->new_padding; | |
985 | left -= p->new_padding; | |
986 | } | |
987 | } | |
988 | } | |
989 | ||
e594a3b1 LP |
990 | static int config_parse_type( |
991 | const char *unit, | |
992 | const char *filename, | |
993 | unsigned line, | |
994 | const char *section, | |
995 | unsigned section_line, | |
996 | const char *lvalue, | |
997 | int ltype, | |
998 | const char *rvalue, | |
999 | void *data, | |
1000 | void *userdata) { | |
1001 | ||
1002 | sd_id128_t *type_uuid = data; | |
1003 | int r; | |
1004 | ||
1005 | assert(rvalue); | |
1006 | assert(type_uuid); | |
1007 | ||
1008 | r = gpt_partition_type_uuid_from_string(rvalue, type_uuid); | |
1009 | if (r < 0) | |
1010 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
1011 | ||
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | static int config_parse_label( | |
1016 | const char *unit, | |
1017 | const char *filename, | |
1018 | unsigned line, | |
1019 | const char *section, | |
1020 | unsigned section_line, | |
1021 | const char *lvalue, | |
1022 | int ltype, | |
1023 | const char *rvalue, | |
1024 | void *data, | |
1025 | void *userdata) { | |
1026 | ||
e031166e | 1027 | _cleanup_free_ char *resolved = NULL; |
e594a3b1 LP |
1028 | char **label = data; |
1029 | int r; | |
1030 | ||
1031 | assert(rvalue); | |
1032 | assert(label); | |
1033 | ||
be9ce018 LP |
1034 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
1035 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
1036 | ||
de61a04b | 1037 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved); |
e031166e | 1038 | if (r < 0) { |
e459258f | 1039 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
1040 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
1045 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1046 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
1047 | return 0; | |
1048 | } | |
1049 | ||
22a0a36e LP |
1050 | r = gpt_partition_label_valid(resolved); |
1051 | if (r < 0) { | |
1052 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1053 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
1054 | resolved, rvalue); | |
1055 | return 0; | |
1056 | } | |
1057 | if (!r) { | |
e594a3b1 | 1058 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
1059 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
1060 | resolved, rvalue); | |
e594a3b1 LP |
1061 | return 0; |
1062 | } | |
1063 | ||
e031166e | 1064 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1065 | return 0; |
1066 | } | |
1067 | ||
1068 | static int config_parse_weight( | |
1069 | const char *unit, | |
1070 | const char *filename, | |
1071 | unsigned line, | |
1072 | const char *section, | |
1073 | unsigned section_line, | |
1074 | const char *lvalue, | |
1075 | int ltype, | |
1076 | const char *rvalue, | |
1077 | void *data, | |
1078 | void *userdata) { | |
1079 | ||
1080 | uint32_t *priority = data, v; | |
1081 | int r; | |
1082 | ||
1083 | assert(rvalue); | |
1084 | assert(priority); | |
1085 | ||
1086 | r = safe_atou32(rvalue, &v); | |
1087 | if (r < 0) { | |
1088 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1089 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1090 | return 0; | |
1091 | } | |
1092 | ||
1093 | if (v > 1000U*1000U) { | |
c8f3d767 | 1094 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1095 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | *priority = v; | |
1100 | return 0; | |
1101 | } | |
1102 | ||
1103 | static int config_parse_size4096( | |
1104 | const char *unit, | |
1105 | const char *filename, | |
1106 | unsigned line, | |
1107 | const char *section, | |
1108 | unsigned section_line, | |
1109 | const char *lvalue, | |
1110 | int ltype, | |
1111 | const char *rvalue, | |
1112 | void *data, | |
1113 | void *userdata) { | |
1114 | ||
1115 | uint64_t *sz = data, parsed; | |
1116 | int r; | |
1117 | ||
1118 | assert(rvalue); | |
1119 | assert(data); | |
1120 | ||
1121 | r = parse_size(rvalue, 1024, &parsed); | |
1122 | if (r < 0) | |
c8f3d767 | 1123 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1124 | "Failed to parse size value: %s", rvalue); |
1125 | ||
1126 | if (ltype > 0) | |
1127 | *sz = round_up_size(parsed, 4096); | |
1128 | else if (ltype < 0) | |
1129 | *sz = round_down_size(parsed, 4096); | |
1130 | else | |
1131 | *sz = parsed; | |
1132 | ||
1133 | if (*sz != parsed) | |
e2341b6b DT |
1134 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.", |
1135 | lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz); | |
e594a3b1 LP |
1136 | |
1137 | return 0; | |
1138 | } | |
1139 | ||
53171c04 LP |
1140 | static int config_parse_fstype( |
1141 | const char *unit, | |
1142 | const char *filename, | |
1143 | unsigned line, | |
1144 | const char *section, | |
1145 | unsigned section_line, | |
1146 | const char *lvalue, | |
1147 | int ltype, | |
1148 | const char *rvalue, | |
1149 | void *data, | |
1150 | void *userdata) { | |
1151 | ||
1152 | char **fstype = data; | |
1153 | ||
1154 | assert(rvalue); | |
1155 | assert(data); | |
1156 | ||
1157 | if (!filename_is_valid(rvalue)) | |
1158 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1159 | "File system type is not valid, refusing: %s", rvalue); | |
1160 | ||
1161 | return free_and_strdup_warn(fstype, rvalue); | |
1162 | } | |
1163 | ||
8a794850 LP |
1164 | static int config_parse_copy_files( |
1165 | const char *unit, | |
1166 | const char *filename, | |
1167 | unsigned line, | |
1168 | const char *section, | |
1169 | unsigned section_line, | |
1170 | const char *lvalue, | |
1171 | int ltype, | |
1172 | const char *rvalue, | |
1173 | void *data, | |
1174 | void *userdata) { | |
1175 | ||
1176 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1177 | const char *p = rvalue, *target; | |
1178 | Partition *partition = data; | |
1179 | int r; | |
1180 | ||
1181 | assert(rvalue); | |
1182 | assert(partition); | |
1183 | ||
1184 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1185 | if (r < 0) | |
1186 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1187 | if (r == 0) { | |
1188 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1189 | return 0; | |
1190 | } | |
1191 | ||
1192 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1193 | if (r < 0) | |
1194 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1195 | if (r == 0) | |
1196 | target = source; /* No target, then it's the same as the source */ | |
1197 | else | |
1198 | target = buffer; | |
1199 | ||
1200 | if (!isempty(p)) | |
1201 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1202 | ||
de61a04b | 1203 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source); |
8a794850 LP |
1204 | if (r < 0) { |
1205 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1206 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1207 | return 0; | |
1208 | } | |
1209 | ||
0ade2213 LP |
1210 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1211 | if (r < 0) | |
8a794850 | 1212 | return 0; |
8a794850 | 1213 | |
de61a04b | 1214 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target); |
8a794850 LP |
1215 | if (r < 0) { |
1216 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1217 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1218 | return 0; | |
1219 | } | |
1220 | ||
0ade2213 LP |
1221 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1222 | if (r < 0) | |
8a794850 | 1223 | return 0; |
8a794850 LP |
1224 | |
1225 | r = strv_consume_pair(&partition->copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); | |
1226 | if (r < 0) | |
1227 | return log_oom(); | |
1228 | ||
1229 | return 0; | |
1230 | } | |
1231 | ||
5c08da58 LP |
1232 | static int config_parse_copy_blocks( |
1233 | const char *unit, | |
1234 | const char *filename, | |
1235 | unsigned line, | |
1236 | const char *section, | |
1237 | unsigned section_line, | |
1238 | const char *lvalue, | |
1239 | int ltype, | |
1240 | const char *rvalue, | |
1241 | void *data, | |
1242 | void *userdata) { | |
1243 | ||
1244 | _cleanup_free_ char *d = NULL; | |
1245 | Partition *partition = data; | |
1246 | int r; | |
1247 | ||
1248 | assert(rvalue); | |
1249 | assert(partition); | |
1250 | ||
1251 | if (isempty(rvalue)) { | |
1252 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1253 | partition->copy_blocks_auto = false; | |
1254 | return 0; | |
1255 | } | |
1256 | ||
1257 | if (streq(rvalue, "auto")) { | |
1258 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1259 | partition->copy_blocks_auto = true; | |
1260 | return 0; | |
1261 | } | |
1262 | ||
de61a04b | 1263 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
5c08da58 LP |
1264 | if (r < 0) { |
1265 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1266 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1267 | return 0; | |
1268 | } | |
1269 | ||
1270 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1271 | if (r < 0) | |
1272 | return 0; | |
1273 | ||
1274 | free_and_replace(partition->copy_blocks_path, d); | |
1275 | partition->copy_blocks_auto = false; | |
1276 | return 0; | |
1277 | } | |
1278 | ||
d83d8048 LP |
1279 | static int config_parse_make_dirs( |
1280 | const char *unit, | |
1281 | const char *filename, | |
1282 | unsigned line, | |
1283 | const char *section, | |
1284 | unsigned section_line, | |
1285 | const char *lvalue, | |
1286 | int ltype, | |
1287 | const char *rvalue, | |
1288 | void *data, | |
1289 | void *userdata) { | |
1290 | ||
1291 | Partition *partition = data; | |
1292 | const char *p = rvalue; | |
1293 | int r; | |
1294 | ||
1295 | assert(rvalue); | |
1296 | assert(partition); | |
1297 | ||
1298 | for (;;) { | |
1299 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1300 | ||
1301 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1302 | if (r == -ENOMEM) | |
1303 | return log_oom(); | |
1304 | if (r < 0) { | |
1305 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1306 | return 0; | |
1307 | } | |
1308 | if (r == 0) | |
1309 | return 0; | |
1310 | ||
de61a04b | 1311 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
d83d8048 LP |
1312 | if (r < 0) { |
1313 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1314 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1315 | continue; | |
1316 | } | |
1317 | ||
1318 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1319 | if (r < 0) | |
1320 | continue; | |
1321 | ||
1322 | r = strv_consume(&partition->make_directories, TAKE_PTR(d)); | |
1323 | if (r < 0) | |
1324 | return log_oom(); | |
1325 | } | |
1326 | } | |
1327 | ||
889914ef LP |
1328 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1329 | ||
e73309c5 LP |
1330 | static int config_parse_gpt_flags( |
1331 | const char *unit, | |
1332 | const char *filename, | |
1333 | unsigned line, | |
1334 | const char *section, | |
1335 | unsigned section_line, | |
1336 | const char *lvalue, | |
1337 | int ltype, | |
1338 | const char *rvalue, | |
1339 | void *data, | |
1340 | void *userdata) { | |
1341 | ||
1342 | uint64_t *gpt_flags = data; | |
1343 | int r; | |
1344 | ||
1345 | assert(rvalue); | |
1346 | assert(gpt_flags); | |
1347 | ||
1348 | r = safe_atou64(rvalue, gpt_flags); | |
1349 | if (r < 0) { | |
1350 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1351 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | return 0; | |
1356 | } | |
1357 | ||
11749b61 DDM |
1358 | static int config_parse_uuid( |
1359 | const char *unit, | |
1360 | const char *filename, | |
1361 | unsigned line, | |
1362 | const char *section, | |
1363 | unsigned section_line, | |
1364 | const char *lvalue, | |
1365 | int ltype, | |
1366 | const char *rvalue, | |
1367 | void *data, | |
1368 | void *userdata) { | |
1369 | ||
1370 | Partition *partition = ASSERT_PTR(data); | |
1371 | int r; | |
1372 | ||
1373 | if (isempty(rvalue)) { | |
1374 | partition->new_uuid = SD_ID128_NULL; | |
1375 | partition->new_uuid_is_set = false; | |
1376 | return 0; | |
1377 | } | |
1378 | ||
1379 | if (streq(rvalue, "null")) { | |
1380 | partition->new_uuid = SD_ID128_NULL; | |
1381 | partition->new_uuid_is_set = true; | |
1382 | return 0; | |
1383 | } | |
1384 | ||
1385 | r = sd_id128_from_string(rvalue, &partition->new_uuid); | |
1386 | if (r < 0) { | |
1387 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue); | |
1388 | return 0; | |
1389 | } | |
1390 | ||
1391 | partition->new_uuid_is_set = true; | |
1392 | ||
1393 | return 0; | |
1394 | } | |
1395 | ||
b5b7879a DDM |
1396 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF, "Invalid verity mode"); |
1397 | ||
39fc0174 | 1398 | static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) { |
e594a3b1 LP |
1399 | |
1400 | ConfigTableItem table[] = { | |
5c08da58 LP |
1401 | { "Partition", "Type", config_parse_type, 0, &p->type_uuid }, |
1402 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, | |
11749b61 | 1403 | { "Partition", "UUID", config_parse_uuid, 0, p }, |
5c08da58 LP |
1404 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, |
1405 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1406 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1407 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1408 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1409 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1410 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1411 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1412 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1413 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1414 | { "Partition", "CopyFiles", config_parse_copy_files, 0, p }, | |
1415 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, p }, | |
1416 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
b5b7879a DDM |
1417 | { "Partition", "Verity", config_parse_verity, 0, &p->verity }, |
1418 | { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key }, | |
e73309c5 LP |
1419 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, |
1420 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
ff0771bf | 1421 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, |
1c41c1dc | 1422 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, |
e594a3b1 LP |
1423 | {} |
1424 | }; | |
1425 | int r; | |
39fc0174 RP |
1426 | _cleanup_free_ char *filename = NULL; |
1427 | const char* dropin_dirname; | |
e594a3b1 | 1428 | |
39fc0174 RP |
1429 | r = path_extract_filename(path, &filename); |
1430 | if (r < 0) | |
1431 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path);; | |
1432 | ||
1433 | dropin_dirname = strjoina(filename, ".d"); | |
1434 | ||
1435 | r = config_parse_many( | |
1436 | STRV_MAKE_CONST(path), | |
1437 | conf_file_dirs, | |
1438 | dropin_dirname, | |
1439 | "Partition\0", | |
1440 | config_item_table_lookup, table, | |
1441 | CONFIG_PARSE_WARN, | |
1442 | p, | |
1443 | NULL, | |
1444 | &p->drop_in_files); | |
e594a3b1 LP |
1445 | if (r < 0) |
1446 | return r; | |
1447 | ||
1448 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) | |
1449 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1450 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1451 | ||
1452 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1453 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1454 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1455 | ||
1456 | if (sd_id128_is_null(p->type_uuid)) | |
1457 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1458 | "Type= not defined, refusing."); | |
1459 | ||
5c08da58 LP |
1460 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1461 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
53171c04 | 1462 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5c08da58 | 1463 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); |
53171c04 | 1464 | |
d83d8048 | 1465 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1466 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1467 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1468 | ||
5c08da58 | 1469 | if (!p->format && (!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories) || (p->encrypt != ENCRYPT_OFF && !(p->copy_blocks_path || p->copy_blocks_auto)))) { |
b9df3536 | 1470 | /* Pick "ext4" as file system if we are configured to copy files or encrypt the device */ |
8a794850 LP |
1471 | p->format = strdup("ext4"); |
1472 | if (!p->format) | |
1473 | return log_oom(); | |
1474 | } | |
1475 | ||
b5b7879a DDM |
1476 | if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) { |
1477 | r = dlopen_cryptsetup(); | |
1478 | if (r < 0) | |
1479 | return log_syntax(NULL, LOG_ERR, path, 1, r, | |
1480 | "libcryptsetup not found, Verity=/Encrypt= are not supported: %m"); | |
1481 | } | |
1482 | ||
1483 | if (p->verity != VERITY_OFF && !p->verity_match_key) | |
1484 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1485 | "VerityMatchKey= must be set if Verity=%s", verity_mode_to_string(p->verity)); | |
1486 | ||
1487 | if (p->verity == VERITY_OFF && p->verity_match_key) | |
1488 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1489 | "VerityMatchKey= can only be set if Verity= is not \"%s\"", | |
1490 | verity_mode_to_string(p->verity)); | |
1491 | ||
1492 | if (p->verity == VERITY_HASH && (p->copy_files || p->copy_blocks_path || p->copy_blocks_auto || p->format || p->make_directories)) | |
1493 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1494 | "CopyBlocks=/CopyFiles=/Format=/MakeDirectories= cannot be used with Verity=%s", | |
1495 | verity_mode_to_string(p->verity)); | |
1496 | ||
1497 | if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF) | |
1498 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1499 | "Encrypting verity hash/data partitions is not supported"); | |
1500 | ||
e73309c5 LP |
1501 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
1502 | if ((gpt_partition_type_is_root_verity(p->type_uuid) || | |
1503 | gpt_partition_type_is_usr_verity(p->type_uuid)) && | |
1504 | p->read_only < 0) | |
1505 | p->read_only = true; | |
1506 | ||
1c41c1dc LP |
1507 | /* Default to "growfs" on, unless read-only */ |
1508 | if (gpt_partition_type_knows_growfs(p->type_uuid) && | |
1509 | p->read_only <= 0) | |
1510 | p->growfs = true; | |
1511 | ||
e594a3b1 LP |
1512 | return 0; |
1513 | } | |
1514 | ||
b5b7879a DDM |
1515 | static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) { |
1516 | Partition *s = NULL; | |
1517 | ||
1518 | assert(p); | |
1519 | assert(p->verity != VERITY_OFF); | |
1520 | assert(p->verity_match_key); | |
1521 | assert(mode != VERITY_OFF); | |
1522 | assert(p->verity != mode); | |
1523 | assert(ret); | |
1524 | ||
1525 | /* Try to find the matching sibling partition of the given type for a verity partition. For a data | |
1526 | * partition, this is the corresponding hash partiton with the same verity name (and vice versa for | |
1527 | * the hash partition). | |
1528 | */ | |
1529 | ||
1530 | LIST_FOREACH(partitions, q, context->partitions) { | |
1531 | if (p == q) | |
1532 | continue; | |
1533 | ||
1534 | if (q->verity != mode) | |
1535 | continue; | |
1536 | ||
1537 | assert(q->verity_match_key); | |
1538 | ||
1539 | if (!streq(p->verity_match_key, q->verity_match_key)) | |
1540 | continue; | |
1541 | ||
1542 | if (s) | |
1543 | return -ENOTUNIQ; | |
1544 | ||
1545 | s = q; | |
1546 | } | |
1547 | ||
1548 | if (!s) | |
1549 | return -ENXIO; | |
1550 | ||
1551 | *ret = s; | |
1552 | ||
1553 | return 0; | |
1554 | } | |
1555 | ||
e594a3b1 LP |
1556 | static int context_read_definitions( |
1557 | Context *context, | |
224c853f | 1558 | char **directories, |
e594a3b1 LP |
1559 | const char *root) { |
1560 | ||
1561 | _cleanup_strv_free_ char **files = NULL; | |
1562 | Partition *last = NULL; | |
e594a3b1 | 1563 | int r; |
39fc0174 | 1564 | const char *const *dirs; |
e594a3b1 LP |
1565 | |
1566 | assert(context); | |
1567 | ||
224c853f | 1568 | dirs = (const char* const*) (directories ?: CONF_PATHS_STRV("repart.d")); |
39fc0174 | 1569 | |
224c853f | 1570 | r = conf_files_list_strv(&files, ".conf", directories ? NULL : root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs); |
e594a3b1 LP |
1571 | if (r < 0) |
1572 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
1573 | ||
1574 | STRV_FOREACH(f, files) { | |
1575 | _cleanup_(partition_freep) Partition *p = NULL; | |
1576 | ||
1577 | p = partition_new(); | |
1578 | if (!p) | |
1579 | return log_oom(); | |
1580 | ||
1581 | p->definition_path = strdup(*f); | |
1582 | if (!p->definition_path) | |
1583 | return log_oom(); | |
1584 | ||
39fc0174 | 1585 | r = partition_read_definition(p, *f, dirs); |
e594a3b1 LP |
1586 | if (r < 0) |
1587 | return r; | |
1588 | ||
1589 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
1590 | last = TAKE_PTR(p); | |
1591 | context->n_partitions++; | |
1592 | } | |
1593 | ||
b5b7879a DDM |
1594 | /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */ |
1595 | ||
1596 | LIST_FOREACH(partitions, p, context->partitions) { | |
1597 | if (p->verity == VERITY_OFF) | |
1598 | continue; | |
1599 | ||
1600 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
1601 | Partition *q; | |
1602 | ||
1603 | if (p->verity == mode) | |
1604 | continue; | |
1605 | ||
1606 | if (p->siblings[mode]) | |
1607 | continue; | |
1608 | ||
1609 | r = find_verity_sibling(context, p, mode, &q); | |
1610 | if (r == -ENXIO) | |
1611 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1612 | "Missing verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1613 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
1614 | if (r == -ENOTUNIQ) | |
1615 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1616 | "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s", | |
1617 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
1618 | if (r < 0) | |
1619 | return r; | |
1620 | ||
1621 | if (q->priority != p->priority) | |
1622 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1623 | "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s", | |
1624 | p->priority, q->priority, p->verity_match_key); | |
1625 | ||
1626 | p->siblings[mode] = q; | |
1627 | } | |
1628 | } | |
1629 | ||
e594a3b1 LP |
1630 | return 0; |
1631 | } | |
1632 | ||
e594a3b1 LP |
1633 | static int determine_current_padding( |
1634 | struct fdisk_context *c, | |
1635 | struct fdisk_table *t, | |
1636 | struct fdisk_partition *p, | |
994b3031 LP |
1637 | uint64_t secsz, |
1638 | uint64_t grainsz, | |
e594a3b1 LP |
1639 | uint64_t *ret) { |
1640 | ||
1641 | size_t n_partitions; | |
1642 | uint64_t offset, next = UINT64_MAX; | |
1643 | ||
1644 | assert(c); | |
1645 | assert(t); | |
1646 | assert(p); | |
1647 | ||
1648 | if (!fdisk_partition_has_end(p)) | |
1649 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1650 | ||
1651 | offset = fdisk_partition_get_end(p); | |
994b3031 LP |
1652 | assert(offset < UINT64_MAX / secsz); |
1653 | offset *= secsz; | |
e594a3b1 LP |
1654 | |
1655 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 1656 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 LP |
1657 | struct fdisk_partition *q; |
1658 | uint64_t start; | |
1659 | ||
1660 | q = fdisk_table_get_partition(t, i); | |
1661 | if (!q) | |
1662 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1663 | ||
1664 | if (fdisk_partition_is_used(q) <= 0) | |
1665 | continue; | |
1666 | ||
1667 | if (!fdisk_partition_has_start(q)) | |
1668 | continue; | |
1669 | ||
1670 | start = fdisk_partition_get_start(q); | |
994b3031 LP |
1671 | assert(start < UINT64_MAX / secsz); |
1672 | start *= secsz; | |
e594a3b1 LP |
1673 | |
1674 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1675 | next = start; | |
1676 | } | |
1677 | ||
1678 | if (next == UINT64_MAX) { | |
1679 | /* No later partition? In that case check the end of the usable area */ | |
1680 | next = fdisk_get_last_lba(c); | |
1681 | assert(next < UINT64_MAX); | |
1682 | next++; /* The last LBA is one sector before the end */ | |
1683 | ||
994b3031 LP |
1684 | assert(next < UINT64_MAX / secsz); |
1685 | next *= secsz; | |
e594a3b1 LP |
1686 | |
1687 | if (offset > next) | |
1688 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1689 | } | |
1690 | ||
1691 | assert(next >= offset); | |
994b3031 LP |
1692 | offset = round_up_size(offset, grainsz); |
1693 | next = round_down_size(next, grainsz); | |
e594a3b1 | 1694 | |
a6f44d61 | 1695 | *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */ |
e594a3b1 LP |
1696 | return 0; |
1697 | } | |
1698 | ||
1699 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { | |
1700 | _cleanup_free_ char *ids = NULL; | |
1701 | int r; | |
1702 | ||
1703 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
1704 | return -EINVAL; | |
1705 | ||
b7416360 | 1706 | ids = new(char, SD_ID128_UUID_STRING_MAX); |
e594a3b1 LP |
1707 | if (!ids) |
1708 | return -ENOMEM; | |
1709 | ||
b7416360 | 1710 | r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids)); |
e594a3b1 LP |
1711 | if (r < 0) |
1712 | return r; | |
1713 | ||
1714 | TAKE_PTR(ids); | |
1715 | return 0; | |
1716 | } | |
1717 | ||
1718 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
1719 | int r; | |
1720 | ||
1721 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
1722 | if (r < 0) | |
1723 | return r; | |
1724 | ||
1725 | r = fdisk_set_disklabel_id(c); | |
1726 | if (r < 0) | |
1727 | return r; | |
1728 | ||
1729 | return fdisk_set_ask(c, NULL, NULL); | |
1730 | } | |
1731 | ||
53171c04 | 1732 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 | 1733 | union { |
ade99252 | 1734 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
1735 | sd_id128_t id; |
1736 | } result; | |
1737 | ||
53171c04 | 1738 | assert(token); |
e594a3b1 LP |
1739 | assert(ret); |
1740 | ||
53171c04 LP |
1741 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
1742 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
1743 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
1744 | * the machine ID we don't want to leak. */ | |
e594a3b1 | 1745 | |
ade99252 | 1746 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md); |
e594a3b1 LP |
1747 | |
1748 | /* Take the first half, mark it as v4 UUID */ | |
1749 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
1750 | *ret = id128_make_v4_uuid(result.id); | |
1751 | return 0; | |
1752 | } | |
1753 | ||
a26f4a49 LP |
1754 | static int context_load_partition_table( |
1755 | Context *context, | |
1756 | const char *node, | |
1757 | int *backing_fd) { | |
1758 | ||
e594a3b1 LP |
1759 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
1760 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
1761 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
1762 | _cleanup_free_ char *disk_uuid_string = NULL; | |
1763 | bool from_scratch = false; | |
1764 | sd_id128_t disk_uuid; | |
1765 | size_t n_partitions; | |
994b3031 LP |
1766 | unsigned long secsz; |
1767 | uint64_t grainsz; | |
e594a3b1 LP |
1768 | int r; |
1769 | ||
1770 | assert(context); | |
1771 | assert(node); | |
a26f4a49 | 1772 | assert(backing_fd); |
170c9823 LP |
1773 | assert(!context->fdisk_context); |
1774 | assert(!context->free_areas); | |
1775 | assert(context->start == UINT64_MAX); | |
1776 | assert(context->end == UINT64_MAX); | |
1777 | assert(context->total == UINT64_MAX); | |
e594a3b1 LP |
1778 | |
1779 | c = fdisk_new_context(); | |
1780 | if (!c) | |
1781 | return log_oom(); | |
1782 | ||
a26f4a49 LP |
1783 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
1784 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
1785 | if (*backing_fd < 0) | |
1786 | r = fdisk_assign_device(c, node, arg_dry_run); | |
ddb6eeaf LP |
1787 | else |
1788 | r = fdisk_assign_device(c, FORMAT_PROC_FD_PATH(*backing_fd), arg_dry_run); | |
170c9823 LP |
1789 | if (r == -EINVAL && arg_size_auto) { |
1790 | struct stat st; | |
1791 | ||
1792 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
1793 | * it if automatic sizing is requested. */ | |
1794 | ||
1795 | if (*backing_fd < 0) | |
1796 | r = stat(node, &st); | |
1797 | else | |
1798 | r = fstat(*backing_fd, &st); | |
1799 | if (r < 0) | |
1800 | return log_error_errno(errno, "Failed to stat block device '%s': %m", node); | |
1801 | ||
994b3031 LP |
1802 | if (S_ISREG(st.st_mode) && st.st_size == 0) { |
1803 | /* User the fallback values if we have no better idea */ | |
1804 | context->sector_size = 512; | |
1805 | context->grain_size = 4096; | |
170c9823 | 1806 | return /* from_scratch = */ true; |
994b3031 | 1807 | } |
170c9823 LP |
1808 | |
1809 | r = -EINVAL; | |
1810 | } | |
e594a3b1 | 1811 | if (r < 0) |
a26f4a49 LP |
1812 | return log_error_errno(r, "Failed to open device '%s': %m", node); |
1813 | ||
1814 | if (*backing_fd < 0) { | |
1815 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ | |
38f81e93 | 1816 | *backing_fd = fd_reopen(fdisk_get_devfd(c), O_RDONLY|O_CLOEXEC); |
a26f4a49 | 1817 | if (*backing_fd < 0) |
38f81e93 | 1818 | return log_error_errno(*backing_fd, "Failed to duplicate fdisk fd: %m"); |
e594a3b1 | 1819 | |
25baae50 DDM |
1820 | /* Tell udev not to interfere while we are processing the device */ |
1821 | if (flock(*backing_fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
1822 | return log_error_errno(errno, "Failed to lock block device: %m"); | |
1823 | } | |
e594a3b1 | 1824 | |
994b3031 LP |
1825 | /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the |
1826 | * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use | |
1827 | * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean | |
1828 | * the same thing universally. Also note that regardless what kind of sector size is in use we'll | |
1829 | * place partitions at multiples of 4K. */ | |
1830 | secsz = fdisk_get_sector_size(c); | |
1831 | ||
1832 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
983ce0b5 LP |
1833 | if (secsz < 512 || !ISPOWEROF2(secsz)) |
1834 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
994b3031 LP |
1835 | |
1836 | /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or | |
1837 | * larger */ | |
1838 | grainsz = secsz < 4096 ? 4096 : secsz; | |
1839 | ||
1840 | log_debug("Sector size of device is %lu bytes. Using grain size of %" PRIu64 ".", secsz, grainsz); | |
1841 | ||
e594a3b1 LP |
1842 | switch (arg_empty) { |
1843 | ||
1844 | case EMPTY_REFUSE: | |
1845 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
1846 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
1847 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", node); | |
1848 | ||
1849 | break; | |
1850 | ||
1851 | case EMPTY_REQUIRE: | |
1852 | /* Require an empty disk, refuse any existing partition table */ | |
1853 | r = fdisk_has_label(c); | |
1854 | if (r < 0) | |
1855 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
1856 | if (r > 0) | |
1857 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", node); | |
1858 | ||
1859 | from_scratch = true; | |
1860 | break; | |
1861 | ||
1862 | case EMPTY_ALLOW: | |
1863 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
1864 | r = fdisk_has_label(c); | |
1865 | if (r < 0) | |
1866 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
1867 | if (r > 0) { | |
1868 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
1869 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", node); | |
1870 | } else | |
1871 | from_scratch = true; | |
1872 | ||
1873 | break; | |
1874 | ||
1875 | case EMPTY_FORCE: | |
a26f4a49 | 1876 | case EMPTY_CREATE: |
e594a3b1 LP |
1877 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
1878 | from_scratch = true; | |
1879 | break; | |
1880 | } | |
1881 | ||
1882 | if (from_scratch) { | |
e594a3b1 LP |
1883 | r = fdisk_create_disklabel(c, "gpt"); |
1884 | if (r < 0) | |
1885 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
1886 | ||
53171c04 | 1887 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
1888 | if (r < 0) |
1889 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
1890 | ||
1891 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
1892 | if (r < 0) | |
1893 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
1894 | ||
1895 | goto add_initial_free_area; | |
1896 | } | |
1897 | ||
1898 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
1899 | if (r < 0) | |
1900 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
1901 | ||
1902 | r = sd_id128_from_string(disk_uuid_string, &disk_uuid); | |
1903 | if (r < 0) | |
1904 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
1905 | ||
1906 | if (sd_id128_is_null(disk_uuid)) { | |
53171c04 | 1907 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
1908 | if (r < 0) |
1909 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
1910 | ||
1911 | r = fdisk_set_disklabel_id(c); | |
1912 | if (r < 0) | |
1913 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
1914 | } | |
1915 | ||
1916 | r = fdisk_get_partitions(c, &t); | |
1917 | if (r < 0) | |
1918 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
1919 | ||
1920 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 1921 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 | 1922 | _cleanup_free_ char *label_copy = NULL; |
03677889 | 1923 | Partition *last = NULL; |
e594a3b1 LP |
1924 | struct fdisk_partition *p; |
1925 | struct fdisk_parttype *pt; | |
1926 | const char *pts, *ids, *label; | |
1927 | uint64_t sz, start; | |
1928 | bool found = false; | |
1929 | sd_id128_t ptid, id; | |
1930 | size_t partno; | |
1931 | ||
1932 | p = fdisk_table_get_partition(t, i); | |
1933 | if (!p) | |
1934 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1935 | ||
1936 | if (fdisk_partition_is_used(p) <= 0) | |
1937 | continue; | |
1938 | ||
1939 | if (fdisk_partition_has_start(p) <= 0 || | |
1940 | fdisk_partition_has_size(p) <= 0 || | |
1941 | fdisk_partition_has_partno(p) <= 0) | |
1942 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
1943 | ||
1944 | pt = fdisk_partition_get_type(p); | |
1945 | if (!pt) | |
1946 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition: %m"); | |
1947 | ||
1948 | pts = fdisk_parttype_get_string(pt); | |
1949 | if (!pts) | |
1950 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition as string: %m"); | |
1951 | ||
1952 | r = sd_id128_from_string(pts, &ptid); | |
1953 | if (r < 0) | |
1954 | return log_error_errno(r, "Failed to parse partition type UUID %s: %m", pts); | |
1955 | ||
1956 | ids = fdisk_partition_get_uuid(p); | |
1957 | if (!ids) | |
1958 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a UUID."); | |
1959 | ||
1960 | r = sd_id128_from_string(ids, &id); | |
1961 | if (r < 0) | |
1962 | return log_error_errno(r, "Failed to parse partition UUID %s: %m", ids); | |
1963 | ||
1964 | label = fdisk_partition_get_name(p); | |
1965 | if (!isempty(label)) { | |
1966 | label_copy = strdup(label); | |
1967 | if (!label_copy) | |
1968 | return log_oom(); | |
1969 | } | |
1970 | ||
1971 | sz = fdisk_partition_get_size(p); | |
ac33e147 | 1972 | assert(sz <= UINT64_MAX/secsz); |
994b3031 | 1973 | sz *= secsz; |
e594a3b1 LP |
1974 | |
1975 | start = fdisk_partition_get_start(p); | |
ac33e147 | 1976 | assert(start <= UINT64_MAX/secsz); |
994b3031 | 1977 | start *= secsz; |
e594a3b1 LP |
1978 | |
1979 | partno = fdisk_partition_get_partno(p); | |
1980 | ||
1981 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
1982 | left_boundary = start; | |
1983 | ||
1984 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
1985 | * an existing one assigned yet. */ | |
1986 | LIST_FOREACH(partitions, pp, context->partitions) { | |
1987 | last = pp; | |
1988 | ||
1989 | if (!sd_id128_equal(pp->type_uuid, ptid)) | |
1990 | continue; | |
1991 | ||
1992 | if (!pp->current_partition) { | |
1993 | pp->current_uuid = id; | |
1994 | pp->current_size = sz; | |
1995 | pp->offset = start; | |
1996 | pp->partno = partno; | |
1997 | pp->current_label = TAKE_PTR(label_copy); | |
1998 | ||
1999 | pp->current_partition = p; | |
2000 | fdisk_ref_partition(p); | |
2001 | ||
994b3031 | 2002 | r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding); |
e594a3b1 LP |
2003 | if (r < 0) |
2004 | return r; | |
2005 | ||
2006 | if (pp->current_padding > 0) { | |
2007 | r = context_add_free_area(context, pp->current_padding, pp); | |
2008 | if (r < 0) | |
2009 | return r; | |
2010 | } | |
2011 | ||
2012 | found = true; | |
2013 | break; | |
2014 | } | |
2015 | } | |
2016 | ||
2017 | /* If we have no matching definition, create a new one. */ | |
2018 | if (!found) { | |
2019 | _cleanup_(partition_freep) Partition *np = NULL; | |
2020 | ||
2021 | np = partition_new(); | |
2022 | if (!np) | |
2023 | return log_oom(); | |
2024 | ||
2025 | np->current_uuid = id; | |
2026 | np->type_uuid = ptid; | |
2027 | np->current_size = sz; | |
2028 | np->offset = start; | |
2029 | np->partno = partno; | |
2030 | np->current_label = TAKE_PTR(label_copy); | |
2031 | ||
2032 | np->current_partition = p; | |
2033 | fdisk_ref_partition(p); | |
2034 | ||
994b3031 | 2035 | r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding); |
e594a3b1 LP |
2036 | if (r < 0) |
2037 | return r; | |
2038 | ||
2039 | if (np->current_padding > 0) { | |
2040 | r = context_add_free_area(context, np->current_padding, np); | |
2041 | if (r < 0) | |
2042 | return r; | |
2043 | } | |
2044 | ||
2045 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
2046 | context->n_partitions++; | |
2047 | } | |
2048 | } | |
2049 | ||
2050 | add_initial_free_area: | |
2051 | nsectors = fdisk_get_nsectors(c); | |
994b3031 LP |
2052 | assert(nsectors <= UINT64_MAX/secsz); |
2053 | nsectors *= secsz; | |
e594a3b1 LP |
2054 | |
2055 | first_lba = fdisk_get_first_lba(c); | |
994b3031 LP |
2056 | assert(first_lba <= UINT64_MAX/secsz); |
2057 | first_lba *= secsz; | |
e594a3b1 LP |
2058 | |
2059 | last_lba = fdisk_get_last_lba(c); | |
2060 | assert(last_lba < UINT64_MAX); | |
2061 | last_lba++; | |
994b3031 LP |
2062 | assert(last_lba <= UINT64_MAX/secsz); |
2063 | last_lba *= secsz; | |
e594a3b1 LP |
2064 | |
2065 | assert(last_lba >= first_lba); | |
2066 | ||
2067 | if (left_boundary == UINT64_MAX) { | |
2068 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
2069 | ||
994b3031 LP |
2070 | first_lba = round_up_size(first_lba, grainsz); |
2071 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2072 | |
2073 | if (last_lba > first_lba) { | |
2074 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
2075 | if (r < 0) | |
2076 | return r; | |
2077 | } | |
2078 | } else { | |
2079 | /* Add space left of first partition */ | |
2080 | assert(left_boundary >= first_lba); | |
2081 | ||
994b3031 LP |
2082 | first_lba = round_up_size(first_lba, grainsz); |
2083 | left_boundary = round_down_size(left_boundary, grainsz); | |
2084 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2085 | |
2086 | if (left_boundary > first_lba) { | |
2087 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
2088 | if (r < 0) | |
2089 | return r; | |
2090 | } | |
2091 | } | |
2092 | ||
2093 | context->start = first_lba; | |
2094 | context->end = last_lba; | |
2095 | context->total = nsectors; | |
994b3031 LP |
2096 | context->sector_size = secsz; |
2097 | context->grain_size = grainsz; | |
e594a3b1 LP |
2098 | context->fdisk_context = TAKE_PTR(c); |
2099 | ||
2100 | return from_scratch; | |
2101 | } | |
2102 | ||
2103 | static void context_unload_partition_table(Context *context) { | |
e594a3b1 LP |
2104 | assert(context); |
2105 | ||
80a226b2 | 2106 | LIST_FOREACH(partitions, p, context->partitions) { |
e594a3b1 LP |
2107 | |
2108 | /* Entirely remove partitions that have no configuration */ | |
2109 | if (PARTITION_IS_FOREIGN(p)) { | |
2110 | partition_unlink_and_free(context, p); | |
2111 | continue; | |
2112 | } | |
2113 | ||
2114 | /* Otherwise drop all data we read off the block device and everything we might have | |
2115 | * calculated based on it */ | |
2116 | ||
2117 | p->dropped = false; | |
2118 | p->current_size = UINT64_MAX; | |
2119 | p->new_size = UINT64_MAX; | |
2120 | p->current_padding = UINT64_MAX; | |
2121 | p->new_padding = UINT64_MAX; | |
2122 | p->partno = UINT64_MAX; | |
2123 | p->offset = UINT64_MAX; | |
2124 | ||
2125 | if (p->current_partition) { | |
2126 | fdisk_unref_partition(p->current_partition); | |
2127 | p->current_partition = NULL; | |
2128 | } | |
2129 | ||
2130 | if (p->new_partition) { | |
2131 | fdisk_unref_partition(p->new_partition); | |
2132 | p->new_partition = NULL; | |
2133 | } | |
2134 | ||
2135 | p->padding_area = NULL; | |
2136 | p->allocated_to_area = NULL; | |
2137 | ||
15d43e30 LP |
2138 | p->current_uuid = SD_ID128_NULL; |
2139 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
2140 | } |
2141 | ||
2142 | context->start = UINT64_MAX; | |
2143 | context->end = UINT64_MAX; | |
2144 | context->total = UINT64_MAX; | |
2145 | ||
2146 | if (context->fdisk_context) { | |
2147 | fdisk_unref_context(context->fdisk_context); | |
2148 | context->fdisk_context = NULL; | |
2149 | } | |
2150 | ||
2151 | context_free_free_areas(context); | |
2152 | } | |
2153 | ||
2154 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
2b59bf51 | 2155 | char *t; |
e594a3b1 LP |
2156 | |
2157 | if (from != UINT64_MAX) { | |
2158 | if (from == to || to == UINT64_MAX) | |
2b59bf51 | 2159 | t = strdup(FORMAT_BYTES(from)); |
e594a3b1 | 2160 | else |
fc03e80c | 2161 | t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 | 2162 | } else if (to != UINT64_MAX) |
fc03e80c | 2163 | t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 LP |
2164 | else { |
2165 | *ret = NULL; | |
2166 | return 0; | |
2167 | } | |
2168 | ||
2b59bf51 | 2169 | if (!t) |
e594a3b1 LP |
2170 | return log_oom(); |
2171 | ||
2b59bf51 | 2172 | *ret = t; |
e594a3b1 LP |
2173 | return 1; |
2174 | } | |
2175 | ||
2176 | static const char *partition_label(const Partition *p) { | |
2177 | assert(p); | |
2178 | ||
2179 | if (p->new_label) | |
2180 | return p->new_label; | |
2181 | ||
2182 | if (p->current_label) | |
2183 | return p->current_label; | |
2184 | ||
2185 | return gpt_partition_type_uuid_to_string(p->type_uuid); | |
2186 | } | |
2187 | ||
2188 | static int context_dump_partitions(Context *context, const char *node) { | |
2189 | _cleanup_(table_unrefp) Table *t = NULL; | |
2190 | uint64_t sum_padding = 0, sum_size = 0; | |
e594a3b1 | 2191 | int r; |
b5b7879a DDM |
2192 | const size_t roothash_col = 13, dropin_files_col = 14; |
2193 | bool has_roothash = false, has_dropin_files = false; | |
e594a3b1 | 2194 | |
6a01ea4a | 2195 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
2196 | log_info("Empty partition table."); |
2197 | return 0; | |
2198 | } | |
2199 | ||
b5b7879a | 2200 | t = table_new("type", "label", "uuid", "file", "node", "offset", "old size", "raw size", "size", "old padding", "raw padding", "padding", "activity", "roothash", "drop-in files"); |
e594a3b1 LP |
2201 | if (!t) |
2202 | return log_oom(); | |
2203 | ||
a015fbe7 | 2204 | if (!DEBUG_LOGGING) { |
6a01ea4a | 2205 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 2206 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
b5b7879a | 2207 | (size_t) 8, (size_t) 11, roothash_col, dropin_files_col); |
a015fbe7 TH |
2208 | else |
2209 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
b5b7879a DDM |
2210 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 9, (size_t) 10, |
2211 | (size_t) 12, roothash_col, dropin_files_col); | |
a015fbe7 | 2212 | } |
e594a3b1 | 2213 | |
e594a3b1 | 2214 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
2215 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
2216 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
2217 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
2218 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
2219 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
2220 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
2221 | |
2222 | LIST_FOREACH(partitions, p, context->partitions) { | |
b5b7879a | 2223 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL; |
b7416360 | 2224 | char uuid_buffer[SD_ID128_UUID_STRING_MAX]; |
a015fbe7 | 2225 | const char *label, *activity = NULL; |
e594a3b1 LP |
2226 | |
2227 | if (p->dropped) | |
2228 | continue; | |
2229 | ||
a015fbe7 TH |
2230 | if (p->current_size == UINT64_MAX) |
2231 | activity = "create"; | |
2232 | else if (p->current_size != p->new_size) | |
2233 | activity = "resize"; | |
2234 | ||
e594a3b1 LP |
2235 | label = partition_label(p); |
2236 | partname = p->partno != UINT64_MAX ? fdisk_partname(node, p->partno+1) : NULL; | |
2237 | ||
2238 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2239 | if (r < 0) | |
2240 | return r; | |
2241 | ||
2242 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2243 | if (r < 0) | |
2244 | return r; | |
2245 | ||
2246 | if (p->new_size != UINT64_MAX) | |
2247 | sum_size += p->new_size; | |
2248 | if (p->new_padding != UINT64_MAX) | |
2249 | sum_padding += p->new_padding; | |
2250 | ||
b5b7879a DDM |
2251 | if (p->verity == VERITY_HASH) { |
2252 | rh = p->roothash ? hexmem(p->roothash, p->roothash_size) : strdup("TBD"); | |
2253 | if (!rh) | |
2254 | return log_oom(); | |
2255 | } | |
2256 | ||
e594a3b1 LP |
2257 | r = table_add_many( |
2258 | t, | |
2259 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type_uuid, uuid_buffer), | |
be9ce018 | 2260 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
11749b61 | 2261 | TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid, |
e594a3b1 | 2262 | TABLE_STRING, p->definition_path ? basename(p->definition_path) : "-", TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), |
a015fbe7 | 2263 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2264 | TABLE_UINT64, p->offset, |
a015fbe7 | 2265 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2266 | TABLE_UINT64, p->new_size, |
2267 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2268 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2269 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2270 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
39fc0174 | 2271 | TABLE_STRING, activity ?: "unchanged", |
b5b7879a | 2272 | TABLE_STRING, rh, |
39fc0174 | 2273 | TABLE_STRV, p->drop_in_files); |
e594a3b1 | 2274 | if (r < 0) |
f987a261 | 2275 | return table_log_add_error(r); |
39fc0174 | 2276 | |
b5b7879a | 2277 | has_roothash = has_roothash || !isempty(rh); |
3ab44dbd | 2278 | has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files); |
e594a3b1 LP |
2279 | } |
2280 | ||
6a01ea4a | 2281 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2282 | const char *a, *b; |
2283 | ||
2b59bf51 ZJS |
2284 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size)); |
2285 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding)); | |
e594a3b1 LP |
2286 | |
2287 | r = table_add_many( | |
2288 | t, | |
2289 | TABLE_EMPTY, | |
2290 | TABLE_EMPTY, | |
2291 | TABLE_EMPTY, | |
2292 | TABLE_EMPTY, | |
2293 | TABLE_EMPTY, | |
2294 | TABLE_EMPTY, | |
2295 | TABLE_EMPTY, | |
a015fbe7 | 2296 | TABLE_EMPTY, |
e594a3b1 LP |
2297 | TABLE_STRING, a, |
2298 | TABLE_EMPTY, | |
a015fbe7 TH |
2299 | TABLE_EMPTY, |
2300 | TABLE_STRING, b, | |
39fc0174 | 2301 | TABLE_EMPTY, |
b5b7879a | 2302 | TABLE_EMPTY, |
a015fbe7 | 2303 | TABLE_EMPTY); |
e594a3b1 | 2304 | if (r < 0) |
f987a261 | 2305 | return table_log_add_error(r); |
e594a3b1 LP |
2306 | } |
2307 | ||
b5b7879a DDM |
2308 | if (!has_roothash) { |
2309 | r = table_hide_column_from_display(t, roothash_col); | |
2310 | if (r < 0) | |
2311 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2312 | } | |
2313 | ||
3ab44dbd | 2314 | if (!has_dropin_files) { |
39fc0174 RP |
2315 | r = table_hide_column_from_display(t, dropin_files_col); |
2316 | if (r < 0) | |
2317 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2318 | } | |
2319 | ||
896e678b | 2320 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2321 | } |
2322 | ||
2323 | static void context_bar_char_process_partition( | |
2324 | Context *context, | |
2325 | Partition *bar[], | |
2326 | size_t n, | |
2327 | Partition *p, | |
2328 | size_t *ret_start) { | |
2329 | ||
2330 | uint64_t from, to, total; | |
2331 | size_t x, y; | |
2332 | ||
2333 | assert(context); | |
2334 | assert(bar); | |
2335 | assert(n > 0); | |
2336 | assert(p); | |
2337 | ||
2338 | if (p->dropped) | |
2339 | return; | |
2340 | ||
2341 | assert(p->offset != UINT64_MAX); | |
2342 | assert(p->new_size != UINT64_MAX); | |
2343 | ||
2344 | from = p->offset; | |
2345 | to = from + p->new_size; | |
2346 | ||
d8daed09 TY |
2347 | assert(context->total > 0); |
2348 | total = context->total; | |
e594a3b1 | 2349 | |
d8daed09 TY |
2350 | assert(from <= total); |
2351 | x = from * n / total; | |
e594a3b1 | 2352 | |
d8daed09 TY |
2353 | assert(to <= total); |
2354 | y = to * n / total; | |
e594a3b1 LP |
2355 | |
2356 | assert(x <= y); | |
2357 | assert(y <= n); | |
2358 | ||
2359 | for (size_t i = x; i < y; i++) | |
2360 | bar[i] = p; | |
2361 | ||
2362 | *ret_start = x; | |
2363 | } | |
2364 | ||
2365 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2366 | _cleanup_free_ char *buf = NULL; | |
e594a3b1 LP |
2367 | const char *label; |
2368 | sd_id128_t id; | |
2369 | ||
2370 | /* Tries really hard to find a suitable description for this partition */ | |
2371 | ||
2372 | if (p->definition_path) { | |
2373 | buf = strdup(basename(p->definition_path)); | |
2374 | goto done; | |
2375 | } | |
2376 | ||
2377 | label = partition_label(p); | |
2378 | if (!isempty(label)) { | |
2379 | buf = strdup(label); | |
2380 | goto done; | |
2381 | } | |
2382 | ||
2383 | if (p->partno != UINT64_MAX) { | |
2384 | buf = fdisk_partname(node, p->partno+1); | |
2385 | goto done; | |
2386 | } | |
2387 | ||
11749b61 | 2388 | if (p->new_uuid_is_set) |
e594a3b1 LP |
2389 | id = p->new_uuid; |
2390 | else if (!sd_id128_is_null(p->current_uuid)) | |
2391 | id = p->current_uuid; | |
2392 | else | |
2393 | id = p->type_uuid; | |
2394 | ||
b7416360 | 2395 | buf = strdup(SD_ID128_TO_UUID_STRING(id)); |
e594a3b1 LP |
2396 | |
2397 | done: | |
2398 | if (!buf) | |
2399 | return -ENOMEM; | |
2400 | ||
2401 | *ret = TAKE_PTR(buf); | |
2402 | return 0; | |
2403 | } | |
2404 | ||
2405 | static int context_dump_partition_bar(Context *context, const char *node) { | |
2406 | _cleanup_free_ Partition **bar = NULL; | |
2407 | _cleanup_free_ size_t *start_array = NULL; | |
03677889 | 2408 | Partition *last = NULL; |
e594a3b1 LP |
2409 | bool z = false; |
2410 | size_t c, j = 0; | |
2411 | ||
f391597c | 2412 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2413 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2414 | ||
2415 | bar = new0(Partition*, c); | |
2416 | if (!bar) | |
2417 | return log_oom(); | |
2418 | ||
2419 | start_array = new(size_t, context->n_partitions); | |
2420 | if (!start_array) | |
2421 | return log_oom(); | |
2422 | ||
2423 | LIST_FOREACH(partitions, p, context->partitions) | |
2424 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2425 | ||
2426 | putc(' ', stdout); | |
2427 | ||
2428 | for (size_t i = 0; i < c; i++) { | |
2429 | if (bar[i]) { | |
2430 | if (last != bar[i]) | |
2431 | z = !z; | |
2432 | ||
2433 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2434 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2435 | } else { | |
2436 | fputs(ansi_normal(), stdout); | |
2437 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2438 | } | |
2439 | ||
2440 | last = bar[i]; | |
2441 | } | |
2442 | ||
2443 | fputs(ansi_normal(), stdout); | |
2444 | putc('\n', stdout); | |
2445 | ||
2446 | for (size_t i = 0; i < context->n_partitions; i++) { | |
2447 | _cleanup_free_ char **line = NULL; | |
2448 | ||
2449 | line = new0(char*, c); | |
2450 | if (!line) | |
2451 | return log_oom(); | |
2452 | ||
2453 | j = 0; | |
2454 | LIST_FOREACH(partitions, p, context->partitions) { | |
2455 | _cleanup_free_ char *d = NULL; | |
2456 | j++; | |
2457 | ||
2458 | if (i < context->n_partitions - j) { | |
2459 | ||
2460 | if (line[start_array[j-1]]) { | |
2461 | const char *e; | |
2462 | ||
2463 | /* Upgrade final corner to the right with a branch to the right */ | |
2464 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
2465 | if (e) { | |
2466 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
2467 | if (!d) | |
2468 | return log_oom(); | |
2469 | } | |
2470 | } | |
2471 | ||
2472 | if (!d) { | |
2473 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
2474 | if (!d) | |
2475 | return log_oom(); | |
2476 | } | |
2477 | ||
2478 | } else if (i == context->n_partitions - j) { | |
2479 | _cleanup_free_ char *hint = NULL; | |
2480 | ||
2481 | (void) partition_hint(p, node, &hint); | |
2482 | ||
2483 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
2484 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
2485 | else | |
2486 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
2487 | ||
2488 | if (!d) | |
2489 | return log_oom(); | |
2490 | } | |
2491 | ||
2492 | if (d) | |
2493 | free_and_replace(line[start_array[j-1]], d); | |
2494 | } | |
2495 | ||
2496 | putc(' ', stdout); | |
2497 | ||
2498 | j = 0; | |
2499 | while (j < c) { | |
2500 | if (line[j]) { | |
2501 | fputs(line[j], stdout); | |
2502 | j += utf8_console_width(line[j]); | |
2503 | } else { | |
2504 | putc(' ', stdout); | |
2505 | j++; | |
2506 | } | |
2507 | } | |
2508 | ||
2509 | putc('\n', stdout); | |
2510 | ||
2511 | for (j = 0; j < c; j++) | |
2512 | free(line[j]); | |
2513 | } | |
2514 | ||
2515 | return 0; | |
2516 | } | |
2517 | ||
b5b7879a DDM |
2518 | static bool context_has_roothash(Context *context) { |
2519 | LIST_FOREACH(partitions, p, context->partitions) | |
2520 | if (p->roothash) | |
2521 | return true; | |
2522 | ||
2523 | return false; | |
2524 | } | |
2525 | ||
2526 | static int context_dump(Context *context, const char *node, bool late) { | |
a26d463d DDM |
2527 | int r; |
2528 | ||
2529 | assert(context); | |
2530 | assert(node); | |
2531 | ||
2532 | if (arg_pretty == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2533 | return 0; | |
2534 | ||
b5b7879a DDM |
2535 | /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes |
2536 | * in the output. */ | |
2537 | if (!late && !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2538 | return 0; | |
2539 | ||
2540 | /* If we're not outputting JSON, only dump again after doing all operations if there are any | |
2541 | * roothashes that we need to communicate to the user. */ | |
2542 | if (late && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !context_has_roothash(context)) | |
2543 | return 0; | |
2544 | ||
a26d463d DDM |
2545 | r = context_dump_partitions(context, node); |
2546 | if (r < 0) | |
2547 | return r; | |
2548 | ||
b5b7879a DDM |
2549 | /* Make sure we only write the partition bar once, even if we're writing the partition table twice to |
2550 | * communicate roothashes. */ | |
2551 | if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !late) { | |
a26d463d DDM |
2552 | putc('\n', stdout); |
2553 | ||
2554 | r = context_dump_partition_bar(context, node); | |
2555 | if (r < 0) | |
2556 | return r; | |
2557 | ||
2558 | putc('\n', stdout); | |
2559 | } | |
2560 | ||
2561 | fflush(stdout); | |
2562 | ||
2563 | return 0; | |
2564 | } | |
2565 | ||
2566 | ||
e594a3b1 | 2567 | static bool context_changed(const Context *context) { |
03677889 | 2568 | assert(context); |
e594a3b1 LP |
2569 | |
2570 | LIST_FOREACH(partitions, p, context->partitions) { | |
2571 | if (p->dropped) | |
2572 | continue; | |
2573 | ||
2574 | if (p->allocated_to_area) | |
2575 | return true; | |
2576 | ||
2577 | if (p->new_size != p->current_size) | |
2578 | return true; | |
2579 | } | |
2580 | ||
2581 | return false; | |
2582 | } | |
2583 | ||
81873a6b | 2584 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
2585 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
2586 | int r; | |
2587 | ||
2588 | assert(context); | |
81873a6b LP |
2589 | assert(offset != UINT64_MAX); |
2590 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
2591 | |
2592 | probe = blkid_new_probe(); | |
2593 | if (!probe) | |
2594 | return log_oom(); | |
2595 | ||
e594a3b1 | 2596 | errno = 0; |
81873a6b | 2597 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 2598 | if (r < 0) |
81873a6b | 2599 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
2600 | |
2601 | errno = 0; | |
2602 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
2603 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
2604 | blkid_probe_enable_partitions(probe, true) < 0 || | |
2605 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 2606 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
2607 | |
2608 | for (;;) { | |
2609 | errno = 0; | |
2610 | r = blkid_do_probe(probe); | |
2611 | if (r < 0) | |
2612 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
2613 | if (r > 0) | |
2614 | break; | |
2615 | ||
2616 | errno = 0; | |
2617 | if (blkid_do_wipe(probe, false) < 0) | |
2618 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
2619 | } | |
2620 | ||
e594a3b1 LP |
2621 | return 0; |
2622 | } | |
2623 | ||
81873a6b LP |
2624 | static int context_wipe_partition(Context *context, Partition *p) { |
2625 | int r; | |
2626 | ||
2627 | assert(context); | |
2628 | assert(p); | |
2629 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
2630 | ||
2631 | assert(p->offset != UINT64_MAX); | |
2632 | assert(p->new_size != UINT64_MAX); | |
2633 | ||
2634 | r = context_wipe_range(context, p->offset, p->new_size); | |
2635 | if (r < 0) | |
2636 | return r; | |
2637 | ||
2638 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
2639 | return 0; | |
2640 | } | |
2641 | ||
2642 | static int context_discard_range( | |
2643 | Context *context, | |
2644 | uint64_t offset, | |
2645 | uint64_t size) { | |
2646 | ||
e594a3b1 LP |
2647 | struct stat st; |
2648 | int fd; | |
2649 | ||
2650 | assert(context); | |
2651 | assert(offset != UINT64_MAX); | |
2652 | assert(size != UINT64_MAX); | |
2653 | ||
2654 | if (size <= 0) | |
2655 | return 0; | |
2656 | ||
a26f4a49 | 2657 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
2658 | |
2659 | if (fstat(fd, &st) < 0) | |
2660 | return -errno; | |
2661 | ||
2662 | if (S_ISREG(st.st_mode)) { | |
2663 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
2664 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2665 | return -EOPNOTSUPP; | |
2666 | ||
2667 | return -errno; | |
2668 | } | |
2669 | ||
2670 | return 1; | |
2671 | } | |
2672 | ||
2673 | if (S_ISBLK(st.st_mode)) { | |
2674 | uint64_t range[2], end; | |
2675 | ||
994b3031 | 2676 | range[0] = round_up_size(offset, context->sector_size); |
e594a3b1 | 2677 | |
55d38014 LP |
2678 | if (offset > UINT64_MAX - size) |
2679 | return -ERANGE; | |
2680 | ||
e594a3b1 LP |
2681 | end = offset + size; |
2682 | if (end <= range[0]) | |
2683 | return 0; | |
2684 | ||
994b3031 | 2685 | range[1] = round_down_size(end - range[0], context->sector_size); |
e594a3b1 LP |
2686 | if (range[1] <= 0) |
2687 | return 0; | |
2688 | ||
2689 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
2690 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2691 | return -EOPNOTSUPP; | |
2692 | ||
2693 | return -errno; | |
2694 | } | |
2695 | ||
2696 | return 1; | |
2697 | } | |
2698 | ||
2699 | return -EOPNOTSUPP; | |
2700 | } | |
2701 | ||
2702 | static int context_discard_partition(Context *context, Partition *p) { | |
2703 | int r; | |
2704 | ||
2705 | assert(context); | |
2706 | assert(p); | |
2707 | ||
2708 | assert(p->offset != UINT64_MAX); | |
2709 | assert(p->new_size != UINT64_MAX); | |
2710 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
2711 | ||
2712 | if (!arg_discard) | |
2713 | return 0; | |
2714 | ||
2715 | r = context_discard_range(context, p->offset, p->new_size); | |
2716 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 2717 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2718 | return 0; |
2719 | } | |
22163eb5 LP |
2720 | if (r == -EBUSY) { |
2721 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
2722 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
2723 | return 0; | |
2724 | } | |
e594a3b1 LP |
2725 | if (r == 0) { |
2726 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
2727 | return 0; | |
2728 | } | |
2729 | if (r < 0) | |
5b5109e2 | 2730 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2731 | |
5b5109e2 | 2732 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2733 | return 1; |
2734 | } | |
2735 | ||
2736 | static int context_discard_gap_after(Context *context, Partition *p) { | |
2737 | uint64_t gap, next = UINT64_MAX; | |
e594a3b1 LP |
2738 | int r; |
2739 | ||
2740 | assert(context); | |
2741 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
2742 | ||
2743 | if (p) | |
2744 | gap = p->offset + p->new_size; | |
2745 | else | |
2746 | gap = context->start; | |
2747 | ||
2748 | LIST_FOREACH(partitions, q, context->partitions) { | |
2749 | if (q->dropped) | |
2750 | continue; | |
2751 | ||
2752 | assert(q->offset != UINT64_MAX); | |
2753 | assert(q->new_size != UINT64_MAX); | |
2754 | ||
2755 | if (q->offset < gap) | |
2756 | continue; | |
2757 | ||
2758 | if (next == UINT64_MAX || q->offset < next) | |
2759 | next = q->offset; | |
2760 | } | |
2761 | ||
2762 | if (next == UINT64_MAX) { | |
2763 | next = context->end; | |
2764 | if (gap > next) | |
2765 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
2766 | } | |
2767 | ||
2768 | assert(next >= gap); | |
2769 | r = context_discard_range(context, gap, next - gap); | |
2770 | if (r == -EOPNOTSUPP) { | |
2771 | if (p) | |
5b5109e2 | 2772 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2773 | else |
5b5109e2 | 2774 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
2775 | return 0; |
2776 | } | |
2777 | if (r == 0) /* Too short */ | |
2778 | return 0; | |
2779 | if (r < 0) { | |
2780 | if (p) | |
2781 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
2782 | else | |
2783 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
2784 | } | |
2785 | ||
2786 | if (p) | |
2787 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
2788 | else | |
2789 | log_info("Successfully discarded gap at beginning of disk."); | |
2790 | ||
2791 | return 0; | |
2792 | } | |
2793 | ||
2794 | static int context_wipe_and_discard(Context *context, bool from_scratch) { | |
e594a3b1 LP |
2795 | int r; |
2796 | ||
2797 | assert(context); | |
2798 | ||
2799 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if | |
2800 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
2801 | * device in one go early on. */ | |
2802 | ||
2803 | LIST_FOREACH(partitions, p, context->partitions) { | |
2804 | ||
2805 | if (!p->allocated_to_area) | |
2806 | continue; | |
2807 | ||
e594a3b1 LP |
2808 | r = context_wipe_partition(context, p); |
2809 | if (r < 0) | |
2810 | return r; | |
2811 | ||
2812 | if (!from_scratch) { | |
f0cb1b95 LP |
2813 | r = context_discard_partition(context, p); |
2814 | if (r < 0) | |
2815 | return r; | |
2816 | ||
e594a3b1 LP |
2817 | r = context_discard_gap_after(context, p); |
2818 | if (r < 0) | |
2819 | return r; | |
2820 | } | |
2821 | } | |
2822 | ||
2823 | if (!from_scratch) { | |
2824 | r = context_discard_gap_after(context, NULL); | |
2825 | if (r < 0) | |
2826 | return r; | |
2827 | } | |
2828 | ||
2829 | return 0; | |
2830 | } | |
2831 | ||
b9df3536 | 2832 | static int partition_encrypt( |
994b3031 | 2833 | Context *context, |
b9df3536 LP |
2834 | Partition *p, |
2835 | const char *node, | |
2836 | struct crypt_device **ret_cd, | |
2837 | char **ret_volume, | |
2838 | int *ret_fd) { | |
3dd8ae5c | 2839 | #if HAVE_LIBCRYPTSETUP |
0d12936d | 2840 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
b9df3536 LP |
2841 | _cleanup_(erase_and_freep) void *volume_key = NULL; |
2842 | _cleanup_free_ char *dm_name = NULL, *vol = NULL; | |
b9df3536 LP |
2843 | size_t volume_key_size = 256 / 8; |
2844 | sd_id128_t uuid; | |
2845 | int r; | |
2846 | ||
994b3031 | 2847 | assert(context); |
b9df3536 | 2848 | assert(p); |
889914ef LP |
2849 | assert(p->encrypt != ENCRYPT_OFF); |
2850 | ||
2851 | log_debug("Encryption mode for partition %" PRIu64 ": %s", p->partno, encrypt_mode_to_string(p->encrypt)); | |
b9df3536 | 2852 | |
0d12936d LP |
2853 | r = dlopen_cryptsetup(); |
2854 | if (r < 0) | |
2855 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
2856 | ||
b9df3536 LP |
2857 | if (asprintf(&dm_name, "luks-repart-%08" PRIx64, random_u64()) < 0) |
2858 | return log_oom(); | |
2859 | ||
2860 | if (ret_volume) { | |
2861 | vol = path_join("/dev/mapper/", dm_name); | |
2862 | if (!vol) | |
2863 | return log_oom(); | |
2864 | } | |
2865 | ||
2866 | r = derive_uuid(p->new_uuid, "luks-uuid", &uuid); | |
2867 | if (r < 0) | |
2868 | return r; | |
2869 | ||
2870 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); | |
2871 | ||
2872 | volume_key = malloc(volume_key_size); | |
2873 | if (!volume_key) | |
2874 | return log_oom(); | |
2875 | ||
87cb1ab6 | 2876 | r = crypto_random_bytes(volume_key, volume_key_size); |
b9df3536 LP |
2877 | if (r < 0) |
2878 | return log_error_errno(r, "Failed to generate volume key: %m"); | |
2879 | ||
0d12936d | 2880 | r = sym_crypt_init(&cd, node); |
b9df3536 LP |
2881 | if (r < 0) |
2882 | return log_error_errno(r, "Failed to allocate libcryptsetup context: %m"); | |
2883 | ||
2884 | cryptsetup_enable_logging(cd); | |
2885 | ||
0d12936d | 2886 | r = sym_crypt_format(cd, |
b9df3536 LP |
2887 | CRYPT_LUKS2, |
2888 | "aes", | |
2889 | "xts-plain64", | |
b7416360 | 2890 | SD_ID128_TO_UUID_STRING(uuid), |
b9df3536 LP |
2891 | volume_key, |
2892 | volume_key_size, | |
2893 | &(struct crypt_params_luks2) { | |
be9ce018 | 2894 | .label = strempty(p->new_label), |
994b3031 | 2895 | .sector_size = context->sector_size, |
b9df3536 LP |
2896 | }); |
2897 | if (r < 0) | |
2898 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
2899 | ||
889914ef LP |
2900 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
2901 | r = sym_crypt_keyslot_add_by_volume_key( | |
2902 | cd, | |
2903 | CRYPT_ANY_SLOT, | |
2904 | volume_key, | |
2905 | volume_key_size, | |
2906 | strempty(arg_key), | |
2907 | arg_key_size); | |
2908 | if (r < 0) | |
2909 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
2910 | } | |
2911 | ||
2912 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
2913 | #if HAVE_TPM2 | |
2914 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; | |
2915 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
2916 | _cleanup_(erase_and_freep) void *secret = NULL; | |
2917 | _cleanup_free_ void *blob = NULL, *hash = NULL; | |
2918 | size_t secret_size, blob_size, hash_size; | |
2b92a672 | 2919 | uint16_t pcr_bank, primary_alg; |
889914ef LP |
2920 | int keyslot; |
2921 | ||
d9b5841d LP |
2922 | r = tpm2_seal(arg_tpm2_device, |
2923 | arg_tpm2_pcr_mask, | |
2924 | /* pubkey= */ NULL, /* pubkey_size= */ 0, | |
2925 | /* pubkey_pcr_mask= */ 0, | |
2926 | /* pin= */ NULL, | |
2927 | &secret, &secret_size, | |
2928 | &blob, &blob_size, | |
2929 | &hash, &hash_size, | |
2930 | &pcr_bank, | |
2931 | &primary_alg); | |
889914ef LP |
2932 | if (r < 0) |
2933 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
2934 | ||
2935 | r = base64mem(secret, secret_size, &base64_encoded); | |
2936 | if (r < 0) | |
2937 | return log_error_errno(r, "Failed to base64 encode secret key: %m"); | |
2938 | ||
2939 | r = cryptsetup_set_minimal_pbkdf(cd); | |
2940 | if (r < 0) | |
2941 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
2942 | ||
2943 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
2944 | cd, | |
2945 | CRYPT_ANY_SLOT, | |
2946 | volume_key, | |
2947 | volume_key_size, | |
2948 | base64_encoded, | |
2949 | strlen(base64_encoded)); | |
2950 | if (keyslot < 0) | |
2951 | return log_error_errno(keyslot, "Failed to add new TPM2 key to %s: %m", node); | |
2952 | ||
6c7a1681 | 2953 | r = tpm2_make_luks2_json(keyslot, arg_tpm2_pcr_mask, pcr_bank, primary_alg, blob, blob_size, hash, hash_size, 0, &v); |
889914ef LP |
2954 | if (r < 0) |
2955 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
2956 | ||
2957 | r = cryptsetup_add_token_json(cd, v); | |
2958 | if (r < 0) | |
2959 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
2960 | #else | |
2961 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
2962 | "Support for TPM2 enrollment not enabled."); | |
2963 | #endif | |
2964 | } | |
b9df3536 | 2965 | |
0d12936d | 2966 | r = sym_crypt_activate_by_volume_key( |
b9df3536 LP |
2967 | cd, |
2968 | dm_name, | |
2969 | volume_key, | |
2970 | volume_key_size, | |
2971 | arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0); | |
2972 | if (r < 0) | |
2973 | return log_error_errno(r, "Failed to activate LUKS superblock: %m"); | |
2974 | ||
2975 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
2976 | ||
2977 | if (ret_fd) { | |
2978 | _cleanup_close_ int dev_fd = -1; | |
2979 | ||
2980 | dev_fd = open(vol, O_RDWR|O_CLOEXEC|O_NOCTTY); | |
2981 | if (dev_fd < 0) | |
2982 | return log_error_errno(errno, "Failed to open LUKS volume '%s': %m", vol); | |
2983 | ||
2984 | *ret_fd = TAKE_FD(dev_fd); | |
2985 | } | |
2986 | ||
2987 | if (ret_cd) | |
2988 | *ret_cd = TAKE_PTR(cd); | |
2989 | if (ret_volume) | |
2990 | *ret_volume = TAKE_PTR(vol); | |
2991 | ||
2992 | return 0; | |
3dd8ae5c | 2993 | #else |
2994 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot encrypt: %m"); | |
2995 | #endif | |
b9df3536 LP |
2996 | } |
2997 | ||
2998 | static int deactivate_luks(struct crypt_device *cd, const char *node) { | |
3dd8ae5c | 2999 | #if HAVE_LIBCRYPTSETUP |
b9df3536 LP |
3000 | int r; |
3001 | ||
3002 | if (!cd) | |
3003 | return 0; | |
3004 | ||
3005 | assert(node); | |
3006 | ||
3007 | /* udev or so might access out block device in the background while we are done. Let's hence force | |
3008 | * detach the volume. We sync'ed before, hence this should be safe. */ | |
3009 | ||
0d12936d | 3010 | r = sym_crypt_deactivate_by_name(cd, basename(node), CRYPT_DEACTIVATE_FORCE); |
b9df3536 LP |
3011 | if (r < 0) |
3012 | return log_error_errno(r, "Failed to deactivate LUKS device: %m"); | |
3013 | ||
3014 | return 1; | |
3dd8ae5c | 3015 | #else |
3016 | return 0; | |
3017 | #endif | |
b9df3536 LP |
3018 | } |
3019 | ||
757bc2e4 | 3020 | static int context_copy_blocks(Context *context) { |
b9df3536 | 3021 | int whole_fd = -1, r; |
757bc2e4 LP |
3022 | |
3023 | assert(context); | |
3024 | ||
3025 | /* Copy in file systems on the block level */ | |
3026 | ||
3027 | LIST_FOREACH(partitions, p, context->partitions) { | |
0d12936d | 3028 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
b9df3536 LP |
3029 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
3030 | _cleanup_free_ char *encrypted = NULL; | |
3031 | _cleanup_close_ int encrypted_dev_fd = -1; | |
b9df3536 | 3032 | int target_fd; |
757bc2e4 LP |
3033 | |
3034 | if (p->copy_blocks_fd < 0) | |
3035 | continue; | |
3036 | ||
3037 | if (p->dropped) | |
3038 | continue; | |
3039 | ||
3040 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
3041 | continue; | |
3042 | ||
3043 | assert(p->new_size != UINT64_MAX); | |
3044 | assert(p->copy_blocks_size != UINT64_MAX); | |
3045 | assert(p->new_size >= p->copy_blocks_size); | |
3046 | ||
b9df3536 LP |
3047 | if (whole_fd < 0) |
3048 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3049 | ||
889914ef | 3050 | if (p->encrypt != ENCRYPT_OFF) { |
7f52206a | 3051 | r = loop_device_make(whole_fd, O_RDWR, p->offset, p->new_size, 0, LOCK_EX, &d); |
b9df3536 LP |
3052 | if (r < 0) |
3053 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); | |
3054 | ||
994b3031 | 3055 | r = partition_encrypt(context, p, d->node, &cd, &encrypted, &encrypted_dev_fd); |
b9df3536 LP |
3056 | if (r < 0) |
3057 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
757bc2e4 | 3058 | |
b9df3536 LP |
3059 | if (flock(encrypted_dev_fd, LOCK_EX) < 0) |
3060 | return log_error_errno(errno, "Failed to lock LUKS device: %m"); | |
3061 | ||
3062 | target_fd = encrypted_dev_fd; | |
695cfd53 | 3063 | } else { |
b9df3536 LP |
3064 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) |
3065 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3066 | ||
3067 | target_fd = whole_fd; | |
3068 | } | |
757bc2e4 | 3069 | |
2b59bf51 ZJS |
3070 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", |
3071 | p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno); | |
757bc2e4 | 3072 | |
b9df3536 | 3073 | r = copy_bytes_full(p->copy_blocks_fd, target_fd, p->copy_blocks_size, 0, NULL, NULL, NULL, NULL); |
757bc2e4 LP |
3074 | if (r < 0) |
3075 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
3076 | ||
b9df3536 | 3077 | if (fsync(target_fd) < 0) |
8ac04a65 | 3078 | return log_error_errno(errno, "Failed to synchronize copied data blocks: %m"); |
b9df3536 | 3079 | |
889914ef | 3080 | if (p->encrypt != ENCRYPT_OFF) { |
b9df3536 LP |
3081 | encrypted_dev_fd = safe_close(encrypted_dev_fd); |
3082 | ||
3083 | r = deactivate_luks(cd, encrypted); | |
3084 | if (r < 0) | |
3085 | return r; | |
3086 | ||
0d12936d | 3087 | sym_crypt_free(cd); |
b9df3536 LP |
3088 | cd = NULL; |
3089 | ||
3090 | r = loop_device_sync(d); | |
3091 | if (r < 0) | |
3092 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3093 | } | |
3094 | ||
757bc2e4 LP |
3095 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
3096 | } | |
3097 | ||
3098 | return 0; | |
3099 | } | |
3100 | ||
8a794850 | 3101 | static int do_copy_files(Partition *p, const char *fs) { |
8a794850 LP |
3102 | int r; |
3103 | ||
3104 | assert(p); | |
3105 | assert(fs); | |
3106 | ||
3107 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
3108 | _cleanup_close_ int sfd = -1, pfd = -1, tfd = -1; | |
8a794850 LP |
3109 | |
3110 | sfd = chase_symlinks_and_open(*source, arg_root, CHASE_PREFIX_ROOT|CHASE_WARN, O_CLOEXEC|O_NOCTTY, NULL); | |
3111 | if (sfd < 0) | |
3112 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
3113 | ||
3114 | r = fd_verify_regular(sfd); | |
3115 | if (r < 0) { | |
3116 | if (r != -EISDIR) | |
3117 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
3118 | ||
3119 | /* We are looking at a directory */ | |
3120 | tfd = chase_symlinks_and_open(*target, fs, CHASE_PREFIX_ROOT|CHASE_WARN, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); | |
3121 | if (tfd < 0) { | |
f21a3a82 LP |
3122 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3123 | ||
8a794850 LP |
3124 | if (tfd != -ENOENT) |
3125 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
3126 | ||
f21a3a82 LP |
3127 | r = path_extract_filename(*target, &fn); |
3128 | if (r < 0) | |
3129 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3130 | ||
3131 | r = path_extract_directory(*target, &dn); | |
3132 | if (r < 0) | |
3133 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3134 | ||
8a794850 LP |
3135 | r = mkdir_p_root(fs, dn, UID_INVALID, GID_INVALID, 0755); |
3136 | if (r < 0) | |
3137 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
3138 | ||
3139 | pfd = chase_symlinks_and_open(dn, fs, CHASE_PREFIX_ROOT|CHASE_WARN, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); | |
3140 | if (pfd < 0) | |
3141 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
3142 | ||
652d9040 LP |
3143 | r = copy_tree_at( |
3144 | sfd, ".", | |
6020d00d | 3145 | pfd, fn, |
652d9040 | 3146 | UID_INVALID, GID_INVALID, |
23e026de | 3147 | COPY_REFLINK|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS); |
8a794850 | 3148 | } else |
652d9040 LP |
3149 | r = copy_tree_at( |
3150 | sfd, ".", | |
3151 | tfd, ".", | |
3152 | UID_INVALID, GID_INVALID, | |
23e026de | 3153 | COPY_REFLINK|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS); |
8a794850 | 3154 | if (r < 0) |
554a2b64 | 3155 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 3156 | } else { |
f21a3a82 LP |
3157 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3158 | ||
8a794850 LP |
3159 | /* We are looking at a regular file */ |
3160 | ||
f21a3a82 LP |
3161 | r = path_extract_filename(*target, &fn); |
3162 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
3163 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
3164 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
3165 | if (r < 0) | |
3166 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3167 | ||
3168 | r = path_extract_directory(*target, &dn); | |
3169 | if (r < 0) | |
3170 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3171 | ||
8a794850 LP |
3172 | r = mkdir_p_root(fs, dn, UID_INVALID, GID_INVALID, 0755); |
3173 | if (r < 0) | |
3174 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
3175 | ||
3176 | pfd = chase_symlinks_and_open(dn, fs, CHASE_PREFIX_ROOT|CHASE_WARN, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); | |
3177 | if (pfd < 0) | |
a0ff9971 | 3178 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 3179 | |
e2819067 | 3180 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
3181 | if (tfd < 0) |
3182 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
3183 | ||
3184 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_SIGINT); | |
3185 | if (r < 0) | |
554a2b64 | 3186 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 3187 | |
23e026de | 3188 | (void) copy_xattr(sfd, tfd, COPY_ALL_XATTRS); |
8a794850 LP |
3189 | (void) copy_access(sfd, tfd); |
3190 | (void) copy_times(sfd, tfd, 0); | |
3191 | } | |
3192 | } | |
3193 | ||
3194 | return 0; | |
3195 | } | |
3196 | ||
d83d8048 | 3197 | static int do_make_directories(Partition *p, const char *fs) { |
d83d8048 LP |
3198 | int r; |
3199 | ||
3200 | assert(p); | |
3201 | assert(fs); | |
3202 | ||
3203 | STRV_FOREACH(d, p->make_directories) { | |
3204 | ||
3205 | r = mkdir_p_root(fs, *d, UID_INVALID, GID_INVALID, 0755); | |
3206 | if (r < 0) | |
3207 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
3208 | } | |
3209 | ||
3210 | return 0; | |
3211 | } | |
3212 | ||
3213 | static int partition_populate(Partition *p, const char *node) { | |
8a794850 LP |
3214 | int r; |
3215 | ||
3216 | assert(p); | |
3217 | assert(node); | |
3218 | ||
d83d8048 | 3219 | if (strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
8a794850 LP |
3220 | return 0; |
3221 | ||
3222 | log_info("Populating partition %" PRIu64 " with files.", p->partno); | |
3223 | ||
3224 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
3225 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
3226 | * detached mount propagation. */ | |
3227 | ||
3228 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
3229 | if (r < 0) | |
3230 | return r; | |
3231 | if (r == 0) { | |
3232 | static const char fs[] = "/run/systemd/mount-root"; | |
3233 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
3234 | ||
3235 | r = mkdir_p(fs, 0700); | |
3236 | if (r < 0) { | |
3237 | log_error_errno(r, "Failed to create mount point: %m"); | |
3238 | _exit(EXIT_FAILURE); | |
3239 | } | |
3240 | ||
511a8cfe | 3241 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
3242 | _exit(EXIT_FAILURE); |
3243 | ||
3244 | if (do_copy_files(p, fs) < 0) | |
3245 | _exit(EXIT_FAILURE); | |
3246 | ||
d83d8048 LP |
3247 | if (do_make_directories(p, fs) < 0) |
3248 | _exit(EXIT_FAILURE); | |
3249 | ||
8a794850 LP |
3250 | r = syncfs_path(AT_FDCWD, fs); |
3251 | if (r < 0) { | |
3252 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
3253 | _exit(EXIT_FAILURE); | |
3254 | } | |
3255 | ||
3256 | _exit(EXIT_SUCCESS); | |
3257 | } | |
3258 | ||
3259 | log_info("Successfully populated partition %" PRIu64 " with files.", p->partno); | |
3260 | return 0; | |
3261 | } | |
3262 | ||
53171c04 | 3263 | static int context_mkfs(Context *context) { |
53171c04 LP |
3264 | int fd = -1, r; |
3265 | ||
3266 | assert(context); | |
3267 | ||
3268 | /* Make a file system */ | |
3269 | ||
3270 | LIST_FOREACH(partitions, p, context->partitions) { | |
0d12936d | 3271 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
53171c04 | 3272 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
b9df3536 LP |
3273 | _cleanup_free_ char *encrypted = NULL; |
3274 | _cleanup_close_ int encrypted_dev_fd = -1; | |
3275 | const char *fsdev; | |
53171c04 LP |
3276 | sd_id128_t fs_uuid; |
3277 | ||
3278 | if (p->dropped) | |
3279 | continue; | |
3280 | ||
3281 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3282 | continue; | |
3283 | ||
3284 | if (!p->format) | |
3285 | continue; | |
3286 | ||
3287 | assert(p->offset != UINT64_MAX); | |
3288 | assert(p->new_size != UINT64_MAX); | |
3289 | ||
3290 | if (fd < 0) | |
3291 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3292 | ||
3293 | /* Loopback block devices are not only useful to turn regular files into block devices, but | |
3294 | * also to cut out sections of block devices into new block devices. */ | |
3295 | ||
7f52206a | 3296 | r = loop_device_make(fd, O_RDWR, p->offset, p->new_size, 0, LOCK_EX, &d); |
53171c04 | 3297 | if (r < 0) |
5b5109e2 | 3298 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); |
53171c04 | 3299 | |
889914ef | 3300 | if (p->encrypt != ENCRYPT_OFF) { |
994b3031 | 3301 | r = partition_encrypt(context, p, d->node, &cd, &encrypted, &encrypted_dev_fd); |
b9df3536 LP |
3302 | if (r < 0) |
3303 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
3304 | ||
3305 | if (flock(encrypted_dev_fd, LOCK_EX) < 0) | |
3306 | return log_error_errno(errno, "Failed to lock LUKS device: %m"); | |
3307 | ||
3308 | fsdev = encrypted; | |
3309 | } else | |
3310 | fsdev = d->node; | |
3311 | ||
53171c04 LP |
3312 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
3313 | ||
3314 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", | |
3315 | * keyed off the partition UUID. */ | |
3316 | r = derive_uuid(p->new_uuid, "file-system-uuid", &fs_uuid); | |
3317 | if (r < 0) | |
3318 | return r; | |
3319 | ||
be9ce018 | 3320 | r = make_filesystem(fsdev, p->format, strempty(p->new_label), fs_uuid, arg_discard); |
b9df3536 LP |
3321 | if (r < 0) { |
3322 | encrypted_dev_fd = safe_close(encrypted_dev_fd); | |
3323 | (void) deactivate_luks(cd, encrypted); | |
53171c04 | 3324 | return r; |
b9df3536 | 3325 | } |
53171c04 LP |
3326 | |
3327 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
3328 | ||
b9df3536 | 3329 | /* The file system is now created, no need to delay udev further */ |
889914ef | 3330 | if (p->encrypt != ENCRYPT_OFF) |
b9df3536 LP |
3331 | if (flock(encrypted_dev_fd, LOCK_UN) < 0) |
3332 | return log_error_errno(errno, "Failed to unlock LUKS device: %m"); | |
3333 | ||
d83d8048 | 3334 | r = partition_populate(p, fsdev); |
b9df3536 LP |
3335 | if (r < 0) { |
3336 | encrypted_dev_fd = safe_close(encrypted_dev_fd); | |
3337 | (void) deactivate_luks(cd, encrypted); | |
8a794850 | 3338 | return r; |
b9df3536 LP |
3339 | } |
3340 | ||
3341 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and | |
3342 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
3343 | * the disk. */ | |
3344 | ||
889914ef | 3345 | if (p->encrypt != ENCRYPT_OFF) { |
b9df3536 | 3346 | if (fsync(encrypted_dev_fd) < 0) |
8ac04a65 | 3347 | return log_error_errno(errno, "Failed to synchronize LUKS volume: %m"); |
b9df3536 LP |
3348 | encrypted_dev_fd = safe_close(encrypted_dev_fd); |
3349 | ||
3350 | r = deactivate_luks(cd, encrypted); | |
3351 | if (r < 0) | |
3352 | return r; | |
3353 | ||
0d12936d | 3354 | sym_crypt_free(cd); |
b9df3536 LP |
3355 | cd = NULL; |
3356 | } | |
8a794850 | 3357 | |
53171c04 LP |
3358 | r = loop_device_sync(d); |
3359 | if (r < 0) | |
3360 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3361 | } | |
3362 | ||
3363 | return 0; | |
3364 | } | |
3365 | ||
b5b7879a DDM |
3366 | static int do_verity_format( |
3367 | LoopDevice *data_device, | |
3368 | LoopDevice *hash_device, | |
3369 | uint64_t sector_size, | |
3370 | uint8_t **ret_roothash, | |
3371 | size_t *ret_roothash_size) { | |
3372 | ||
3373 | #if HAVE_LIBCRYPTSETUP | |
3374 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; | |
3375 | _cleanup_free_ uint8_t *rh = NULL; | |
3376 | size_t rhs; | |
3377 | int r; | |
3378 | ||
3379 | assert(data_device); | |
3380 | assert(hash_device); | |
3381 | assert(sector_size > 0); | |
3382 | assert(ret_roothash); | |
3383 | assert(ret_roothash_size); | |
3384 | ||
3385 | r = dlopen_cryptsetup(); | |
3386 | if (r < 0) | |
3387 | return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m"); | |
3388 | ||
3389 | r = sym_crypt_init(&cd, hash_device->node); | |
3390 | if (r < 0) | |
3391 | return log_error_errno(r, "Failed to allocate libcryptsetup context: %m"); | |
3392 | ||
3393 | r = sym_crypt_format( | |
3394 | cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, | |
3395 | &(struct crypt_params_verity){ | |
3396 | .data_device = data_device->node, | |
3397 | .flags = CRYPT_VERITY_CREATE_HASH, | |
3398 | .hash_name = "sha256", | |
3399 | .hash_type = 1, | |
3400 | .data_block_size = sector_size, | |
3401 | .hash_block_size = sector_size, | |
3402 | .salt_size = 32, | |
3403 | }); | |
3404 | if (r < 0) | |
3405 | return log_error_errno(r, "Failed to setup verity hash data: %m"); | |
3406 | ||
3407 | r = sym_crypt_get_volume_key_size(cd); | |
3408 | if (r < 0) | |
3409 | return log_error_errno(r, "Failed to determine verity root hash size: %m"); | |
3410 | rhs = (size_t) r; | |
3411 | ||
3412 | rh = malloc(rhs); | |
3413 | if (!rh) | |
3414 | return log_oom(); | |
3415 | ||
3416 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh, &rhs, NULL, 0); | |
3417 | if (r < 0) | |
3418 | return log_error_errno(r, "Failed to get verity root hash: %m"); | |
3419 | ||
3420 | *ret_roothash = TAKE_PTR(rh); | |
3421 | *ret_roothash_size = rhs; | |
3422 | ||
3423 | return 0; | |
3424 | #else | |
3425 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity: %m"); | |
3426 | #endif | |
3427 | } | |
3428 | ||
3429 | static int context_verity(Context *context) { | |
3430 | int fd = -1, r; | |
3431 | ||
3432 | assert(context); | |
3433 | ||
3434 | LIST_FOREACH(partitions, p, context->partitions) { | |
3435 | Partition *dp; | |
3436 | _cleanup_(loop_device_unrefp) LoopDevice *hash_device = NULL, *data_device = NULL; | |
3437 | _cleanup_free_ uint8_t *rh = NULL; | |
3438 | size_t rhs = 0; /* Initialize to work around for GCC false positive. */ | |
3439 | ||
3440 | if (p->dropped) | |
3441 | continue; | |
3442 | ||
3443 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3444 | continue; | |
3445 | ||
3446 | if (p->verity != VERITY_HASH) | |
3447 | continue; | |
3448 | ||
3449 | assert_se(dp = p->siblings[VERITY_DATA]); | |
3450 | assert(!dp->dropped); | |
3451 | ||
3452 | if (fd < 0) | |
3453 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3454 | ||
3455 | r = loop_device_make(fd, O_RDONLY, dp->offset, dp->new_size, 0, LOCK_EX, &data_device); | |
3456 | if (r < 0) | |
3457 | return log_error_errno(r, | |
3458 | "Failed to make loopback device of verity data partition %" PRIu64 ": %m", | |
3459 | p->partno); | |
3460 | ||
3461 | r = loop_device_make(fd, O_RDWR, p->offset, p->new_size, 0, LOCK_EX, &hash_device); | |
3462 | if (r < 0) | |
3463 | return log_error_errno(r, | |
3464 | "Failed to make loopback device of verity hash partition %" PRIu64 ": %m", | |
3465 | p->partno); | |
3466 | ||
3467 | r = do_verity_format(data_device, hash_device, context->sector_size, &rh, &rhs); | |
3468 | if (r < 0) | |
3469 | return r; | |
3470 | ||
3471 | assert(rhs >= sizeof(sd_id128_t) * 2); | |
3472 | ||
3473 | if (!dp->new_uuid_is_set) { | |
3474 | memcpy_safe(dp->new_uuid.bytes, rh, sizeof(sd_id128_t)); | |
3475 | dp->new_uuid_is_set = true; | |
3476 | } | |
3477 | ||
3478 | if (!p->new_uuid_is_set) { | |
3479 | memcpy_safe(p->new_uuid.bytes, rh + rhs - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
3480 | p->new_uuid_is_set = true; | |
3481 | } | |
3482 | ||
3483 | p->roothash = TAKE_PTR(rh); | |
3484 | p->roothash_size = rhs; | |
3485 | } | |
3486 | ||
3487 | return 0; | |
3488 | } | |
3489 | ||
e594a3b1 LP |
3490 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
3491 | struct { | |
3492 | sd_id128_t type_uuid; | |
3493 | uint64_t counter; | |
695cfd53 | 3494 | } _packed_ plaintext = {}; |
e594a3b1 | 3495 | union { |
ade99252 | 3496 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
3497 | sd_id128_t id; |
3498 | } result; | |
3499 | ||
3500 | uint64_t k = 0; | |
e594a3b1 LP |
3501 | int r; |
3502 | ||
3503 | assert(context); | |
3504 | assert(p); | |
3505 | assert(ret); | |
3506 | ||
3507 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
3508 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
3509 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
3510 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
3511 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
3512 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
3513 | * second and later partition of the same type) if we have more than one partition of the same | |
3514 | * time. Or in other words: | |
3515 | * | |
3516 | * With: | |
3517 | * SEED := /etc/machine-id | |
3518 | * | |
3519 | * If first partition instance of type TYPE_UUID: | |
3520 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
3521 | * | |
3522 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
3523 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
3524 | */ | |
3525 | ||
3526 | LIST_FOREACH(partitions, q, context->partitions) { | |
3527 | if (p == q) | |
3528 | break; | |
3529 | ||
3530 | if (!sd_id128_equal(p->type_uuid, q->type_uuid)) | |
3531 | continue; | |
3532 | ||
3533 | k++; | |
3534 | } | |
3535 | ||
3536 | plaintext.type_uuid = p->type_uuid; | |
3537 | plaintext.counter = htole64(k); | |
3538 | ||
ade99252 KK |
3539 | hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes), |
3540 | &plaintext, | |
3541 | k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
3542 | result.md); | |
e594a3b1 LP |
3543 | |
3544 | /* Take the first half, mark it as v4 UUID */ | |
3545 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
3546 | result.id = id128_make_v4_uuid(result.id); | |
3547 | ||
3548 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
3549 | LIST_FOREACH(partitions, q, context->partitions) { | |
3550 | if (p == q) | |
3551 | continue; | |
3552 | ||
580f48cc | 3553 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 3554 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
3555 | |
3556 | r = sd_id128_randomize(&result.id); | |
3557 | if (r < 0) | |
3558 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
3559 | ||
3560 | break; | |
3561 | } | |
3562 | } | |
3563 | ||
3564 | *ret = result.id; | |
3565 | return 0; | |
3566 | } | |
3567 | ||
3568 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
3569 | _cleanup_free_ char *label = NULL; | |
3570 | const char *prefix; | |
3571 | unsigned k = 1; | |
3572 | ||
3573 | assert(context); | |
3574 | assert(p); | |
3575 | assert(ret); | |
3576 | ||
3577 | prefix = gpt_partition_type_uuid_to_string(p->type_uuid); | |
3578 | if (!prefix) | |
3579 | prefix = "linux"; | |
3580 | ||
3581 | for (;;) { | |
3582 | const char *ll = label ?: prefix; | |
3583 | bool retry = false; | |
e594a3b1 LP |
3584 | |
3585 | LIST_FOREACH(partitions, q, context->partitions) { | |
3586 | if (p == q) | |
3587 | break; | |
3588 | ||
3589 | if (streq_ptr(ll, q->current_label) || | |
3590 | streq_ptr(ll, q->new_label)) { | |
3591 | retry = true; | |
3592 | break; | |
3593 | } | |
3594 | } | |
3595 | ||
3596 | if (!retry) | |
3597 | break; | |
3598 | ||
3599 | label = mfree(label); | |
e594a3b1 LP |
3600 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
3601 | return log_oom(); | |
3602 | } | |
3603 | ||
3604 | if (!label) { | |
3605 | label = strdup(prefix); | |
3606 | if (!label) | |
3607 | return log_oom(); | |
3608 | } | |
3609 | ||
3610 | *ret = TAKE_PTR(label); | |
3611 | return 0; | |
3612 | } | |
3613 | ||
3614 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
e594a3b1 LP |
3615 | int r; |
3616 | ||
3617 | assert(context); | |
3618 | ||
3619 | LIST_FOREACH(partitions, p, context->partitions) { | |
e594a3b1 LP |
3620 | /* Never touch foreign partitions */ |
3621 | if (PARTITION_IS_FOREIGN(p)) { | |
3622 | p->new_uuid = p->current_uuid; | |
3623 | ||
3624 | if (p->current_label) { | |
78eee6ce LP |
3625 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
3626 | if (r < 0) | |
3627 | return r; | |
e594a3b1 LP |
3628 | } |
3629 | ||
3630 | continue; | |
3631 | } | |
3632 | ||
3633 | if (!sd_id128_is_null(p->current_uuid)) | |
3634 | p->new_uuid = p->current_uuid; /* Never change initialized UUIDs */ | |
b5b7879a | 3635 | else if (!p->new_uuid_is_set && p->verity == VERITY_OFF) { |
12963533 | 3636 | /* Not explicitly set by user! */ |
e594a3b1 LP |
3637 | r = partition_acquire_uuid(context, p, &p->new_uuid); |
3638 | if (r < 0) | |
3639 | return r; | |
11749b61 DDM |
3640 | |
3641 | p->new_uuid_is_set = true; | |
e594a3b1 LP |
3642 | } |
3643 | ||
3644 | if (!isempty(p->current_label)) { | |
78eee6ce LP |
3645 | /* never change initialized labels */ |
3646 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
3647 | if (r < 0) | |
3648 | return r; | |
12963533 TH |
3649 | } else if (!p->new_label) { |
3650 | /* Not explicitly set by user! */ | |
3651 | ||
e594a3b1 LP |
3652 | r = partition_acquire_label(context, p, &p->new_label); |
3653 | if (r < 0) | |
3654 | return r; | |
3655 | } | |
3656 | } | |
3657 | ||
3658 | return 0; | |
3659 | } | |
3660 | ||
e73309c5 LP |
3661 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
3662 | _cleanup_free_ char *a = NULL; | |
3663 | ||
3664 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
3665 | uint64_t bit = UINT64_C(1) << i; | |
3666 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
3667 | ||
3668 | if (!FLAGS_SET(flags, bit)) | |
3669 | continue; | |
3670 | ||
3671 | xsprintf(buf, "%u", i); | |
3672 | if (!strextend_with_separator(&a, ",", buf)) | |
3673 | return -ENOMEM; | |
3674 | } | |
3675 | ||
3676 | return fdisk_partition_set_attrs(q, a); | |
3677 | } | |
3678 | ||
1c41c1dc LP |
3679 | static uint64_t partition_merge_flags(Partition *p) { |
3680 | uint64_t f; | |
3681 | ||
3682 | assert(p); | |
3683 | ||
3684 | f = p->gpt_flags; | |
3685 | ||
ff0771bf LP |
3686 | if (p->no_auto >= 0) { |
3687 | if (gpt_partition_type_knows_no_auto(p->type_uuid)) | |
3688 | SET_FLAG(f, GPT_FLAG_NO_AUTO, p->no_auto); | |
3689 | else { | |
b7416360 | 3690 | char buffer[SD_ID128_UUID_STRING_MAX]; |
ff0771bf LP |
3691 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", |
3692 | yes_no(p->no_auto), | |
3693 | gpt_partition_type_uuid_to_string_harder(p->type_uuid, buffer)); | |
3694 | } | |
3695 | } | |
3696 | ||
1c41c1dc LP |
3697 | if (p->read_only >= 0) { |
3698 | if (gpt_partition_type_knows_read_only(p->type_uuid)) | |
3699 | SET_FLAG(f, GPT_FLAG_READ_ONLY, p->read_only); | |
3700 | else { | |
b7416360 | 3701 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
3702 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", |
3703 | yes_no(p->read_only), | |
3704 | gpt_partition_type_uuid_to_string_harder(p->type_uuid, buffer)); | |
3705 | } | |
3706 | } | |
3707 | ||
3708 | if (p->growfs >= 0) { | |
3709 | if (gpt_partition_type_knows_growfs(p->type_uuid)) | |
3710 | SET_FLAG(f, GPT_FLAG_GROWFS, p->growfs); | |
3711 | else { | |
b7416360 | 3712 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
3713 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", |
3714 | yes_no(p->growfs), | |
3715 | gpt_partition_type_uuid_to_string_harder(p->type_uuid, buffer)); | |
3716 | } | |
3717 | } | |
3718 | ||
3719 | return f; | |
3720 | } | |
3721 | ||
f28d4f42 | 3722 | static int context_mangle_partitions(Context *context) { |
f28d4f42 | 3723 | int r; |
e594a3b1 LP |
3724 | |
3725 | assert(context); | |
3726 | ||
e594a3b1 LP |
3727 | LIST_FOREACH(partitions, p, context->partitions) { |
3728 | if (p->dropped) | |
3729 | continue; | |
3730 | ||
3731 | assert(p->new_size != UINT64_MAX); | |
3732 | assert(p->offset != UINT64_MAX); | |
3733 | assert(p->partno != UINT64_MAX); | |
3734 | ||
3735 | if (PARTITION_EXISTS(p)) { | |
3736 | bool changed = false; | |
3737 | ||
3738 | assert(p->current_partition); | |
3739 | ||
3740 | if (p->new_size != p->current_size) { | |
3741 | assert(p->new_size >= p->current_size); | |
994b3031 | 3742 | assert(p->new_size % context->sector_size == 0); |
e594a3b1 LP |
3743 | |
3744 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
3745 | if (r < 0) | |
3746 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
3747 | ||
994b3031 | 3748 | r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size); |
e594a3b1 LP |
3749 | if (r < 0) |
3750 | return log_error_errno(r, "Failed to grow partition: %m"); | |
3751 | ||
3752 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
3753 | changed = true; | |
3754 | } | |
3755 | ||
3756 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
b7416360 | 3757 | r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
3758 | if (r < 0) |
3759 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
3760 | ||
3761 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
3762 | changed = true; | |
3763 | } | |
3764 | ||
3765 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 3766 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
3767 | if (r < 0) |
3768 | return log_error_errno(r, "Failed to set partition label: %m"); | |
3769 | ||
3770 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
3771 | changed = true; | |
3772 | } | |
3773 | ||
3774 | if (changed) { | |
3775 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
3776 | ||
3777 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
3778 | if (r < 0) | |
3779 | return log_error_errno(r, "Failed to update partition: %m"); | |
3780 | } | |
3781 | } else { | |
3782 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
3783 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
e594a3b1 LP |
3784 | |
3785 | assert(!p->new_partition); | |
994b3031 LP |
3786 | assert(p->offset % context->sector_size == 0); |
3787 | assert(p->new_size % context->sector_size == 0); | |
be9ce018 | 3788 | assert(p->new_label); |
e594a3b1 LP |
3789 | |
3790 | t = fdisk_new_parttype(); | |
3791 | if (!t) | |
3792 | return log_oom(); | |
3793 | ||
b7416360 | 3794 | r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type_uuid)); |
e594a3b1 LP |
3795 | if (r < 0) |
3796 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
3797 | ||
3798 | q = fdisk_new_partition(); | |
3799 | if (!q) | |
3800 | return log_oom(); | |
3801 | ||
3802 | r = fdisk_partition_set_type(q, t); | |
3803 | if (r < 0) | |
3804 | return log_error_errno(r, "Failed to set partition type: %m"); | |
3805 | ||
3806 | r = fdisk_partition_size_explicit(q, true); | |
3807 | if (r < 0) | |
3808 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
3809 | ||
994b3031 | 3810 | r = fdisk_partition_set_start(q, p->offset / context->sector_size); |
e594a3b1 LP |
3811 | if (r < 0) |
3812 | return log_error_errno(r, "Failed to position partition: %m"); | |
3813 | ||
994b3031 | 3814 | r = fdisk_partition_set_size(q, p->new_size / context->sector_size); |
e594a3b1 LP |
3815 | if (r < 0) |
3816 | return log_error_errno(r, "Failed to grow partition: %m"); | |
3817 | ||
3818 | r = fdisk_partition_set_partno(q, p->partno); | |
3819 | if (r < 0) | |
3820 | return log_error_errno(r, "Failed to set partition number: %m"); | |
3821 | ||
b7416360 | 3822 | r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
3823 | if (r < 0) |
3824 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
3825 | ||
be9ce018 | 3826 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
3827 | if (r < 0) |
3828 | return log_error_errno(r, "Failed to set partition label: %m"); | |
3829 | ||
ff0771bf | 3830 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 3831 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
3832 | if (r < 0) |
3833 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
3834 | ||
5b5109e2 | 3835 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
3836 | |
3837 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
3838 | if (r < 0) | |
3839 | return log_error_errno(r, "Failed to add partition: %m"); | |
3840 | ||
3841 | assert(!p->new_partition); | |
3842 | p->new_partition = TAKE_PTR(q); | |
3843 | } | |
3844 | } | |
3845 | ||
f28d4f42 LP |
3846 | return 0; |
3847 | } | |
3848 | ||
3849 | static int context_write_partition_table( | |
3850 | Context *context, | |
3851 | const char *node, | |
3852 | bool from_scratch) { | |
3853 | ||
3854 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; | |
3855 | int capable, r; | |
3856 | ||
3857 | assert(context); | |
3858 | ||
f28d4f42 LP |
3859 | if (!from_scratch && !context_changed(context)) { |
3860 | log_info("No changes."); | |
3861 | return 0; | |
3862 | } | |
3863 | ||
3864 | if (arg_dry_run) { | |
3865 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
3866 | return 0; | |
3867 | } | |
3868 | ||
3869 | log_info("Applying changes."); | |
3870 | ||
3871 | if (from_scratch) { | |
81873a6b LP |
3872 | r = context_wipe_range(context, 0, context->total); |
3873 | if (r < 0) | |
3874 | return r; | |
3875 | ||
3876 | log_info("Wiped block device."); | |
3877 | ||
f28d4f42 LP |
3878 | r = context_discard_range(context, 0, context->total); |
3879 | if (r == -EOPNOTSUPP) | |
5b5109e2 | 3880 | log_info("Storage does not support discard, not discarding entire block device data."); |
f28d4f42 LP |
3881 | else if (r < 0) |
3882 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
3883 | else if (r > 0) | |
3884 | log_info("Discarded entire block device."); | |
3885 | } | |
3886 | ||
3887 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
3888 | if (r < 0) | |
3889 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
3890 | ||
3891 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
3892 | * gaps between partitions, just to be sure. */ | |
3893 | r = context_wipe_and_discard(context, from_scratch); | |
3894 | if (r < 0) | |
3895 | return r; | |
3896 | ||
3897 | r = context_copy_blocks(context); | |
3898 | if (r < 0) | |
3899 | return r; | |
3900 | ||
3901 | r = context_mkfs(context); | |
3902 | if (r < 0) | |
3903 | return r; | |
3904 | ||
b5b7879a DDM |
3905 | r = context_verity(context); |
3906 | if (r < 0) | |
3907 | return r; | |
3908 | ||
f28d4f42 LP |
3909 | r = context_mangle_partitions(context); |
3910 | if (r < 0) | |
3911 | return r; | |
3912 | ||
e594a3b1 LP |
3913 | log_info("Writing new partition table."); |
3914 | ||
3915 | r = fdisk_write_disklabel(context->fdisk_context); | |
3916 | if (r < 0) | |
3917 | return log_error_errno(r, "Failed to write partition table: %m"); | |
3918 | ||
911ba624 | 3919 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
3920 | if (capable == -ENOTBLK) |
3921 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
3922 | else if (capable < 0) | |
911ba624 | 3923 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 3924 | else if (capable > 0) { |
e594a3b1 LP |
3925 | log_info("Telling kernel to reread partition table."); |
3926 | ||
3927 | if (from_scratch) | |
3928 | r = fdisk_reread_partition_table(context->fdisk_context); | |
3929 | else | |
3930 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
3931 | if (r < 0) | |
3932 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
3933 | } else | |
3934 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
3935 | ||
3936 | log_info("All done."); | |
3937 | ||
3938 | return 0; | |
3939 | } | |
3940 | ||
3941 | static int context_read_seed(Context *context, const char *root) { | |
3942 | int r; | |
3943 | ||
3944 | assert(context); | |
3945 | ||
3946 | if (!sd_id128_is_null(context->seed)) | |
3947 | return 0; | |
3948 | ||
3949 | if (!arg_randomize) { | |
3950 | _cleanup_close_ int fd = -1; | |
3951 | ||
3952 | fd = chase_symlinks_and_open("/etc/machine-id", root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC, NULL); | |
3953 | if (fd == -ENOENT) | |
3954 | log_info("No machine ID set, using randomized partition UUIDs."); | |
3955 | else if (fd < 0) | |
3956 | return log_error_errno(fd, "Failed to determine machine ID of image: %m"); | |
3957 | else { | |
448b782c | 3958 | r = id128_read_fd(fd, ID128_PLAIN_OR_UNINIT, &context->seed); |
e594a3b1 LP |
3959 | if (r == -ENOMEDIUM) |
3960 | log_info("No machine ID set, using randomized partition UUIDs."); | |
3961 | else if (r < 0) | |
3962 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
3963 | ||
3964 | return 0; | |
3965 | } | |
3966 | } | |
3967 | ||
3968 | r = sd_id128_randomize(&context->seed); | |
3969 | if (r < 0) | |
3970 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
3971 | ||
3972 | return 0; | |
3973 | } | |
3974 | ||
3975 | static int context_factory_reset(Context *context, bool from_scratch) { | |
e594a3b1 LP |
3976 | size_t n = 0; |
3977 | int r; | |
3978 | ||
3979 | assert(context); | |
3980 | ||
3981 | if (arg_factory_reset <= 0) | |
3982 | return 0; | |
3983 | ||
3984 | if (from_scratch) /* Nothing to reset if we start from scratch */ | |
3985 | return 0; | |
3986 | ||
3987 | if (arg_dry_run) { | |
3988 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
3989 | return 0; | |
3990 | } | |
3991 | ||
3992 | log_info("Applying factory reset."); | |
3993 | ||
3994 | LIST_FOREACH(partitions, p, context->partitions) { | |
3995 | ||
3996 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
3997 | continue; | |
3998 | ||
3999 | assert(p->partno != UINT64_MAX); | |
4000 | ||
4001 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
4002 | ||
4003 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
4004 | if (r < 0) | |
4005 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
4006 | ||
4007 | n++; | |
4008 | } | |
4009 | ||
4010 | if (n == 0) { | |
4011 | log_info("Factory reset requested, but no partitions to delete found."); | |
4012 | return 0; | |
4013 | } | |
4014 | ||
4015 | r = fdisk_write_disklabel(context->fdisk_context); | |
4016 | if (r < 0) | |
4017 | return log_error_errno(r, "Failed to write disk label: %m"); | |
4018 | ||
4019 | log_info("Successfully deleted %zu partitions.", n); | |
4020 | return 1; | |
4021 | } | |
4022 | ||
4023 | static int context_can_factory_reset(Context *context) { | |
e594a3b1 LP |
4024 | assert(context); |
4025 | ||
4026 | LIST_FOREACH(partitions, p, context->partitions) | |
4027 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
4028 | return true; | |
4029 | ||
4030 | return false; | |
4031 | } | |
4032 | ||
5c08da58 LP |
4033 | static int resolve_copy_blocks_auto_candidate( |
4034 | dev_t partition_devno, | |
4035 | sd_id128_t partition_type_uuid, | |
4036 | dev_t restrict_devno, | |
4037 | sd_id128_t *ret_uuid) { | |
4038 | ||
4039 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
5c08da58 | 4040 | _cleanup_close_ int fd = -1; |
ca822829 YW |
4041 | _cleanup_free_ char *p = NULL; |
4042 | const char *pttype, *t; | |
5c08da58 LP |
4043 | sd_id128_t pt_parsed, u; |
4044 | blkid_partition pp; | |
4045 | dev_t whole_devno; | |
4046 | blkid_partlist pl; | |
5c08da58 LP |
4047 | int r; |
4048 | ||
4049 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
4050 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
4051 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
4052 | * one of the two. */ | |
4053 | ||
4054 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
4055 | if (r < 0) | |
4056 | return log_error_errno( | |
4057 | r, | |
4058 | "Unable to determine containing block device of partition %u:%u: %m", | |
4059 | major(partition_devno), minor(partition_devno)); | |
4060 | ||
4061 | if (restrict_devno != (dev_t) -1 && | |
4062 | restrict_devno != whole_devno) | |
4063 | return log_error_errno( | |
4064 | SYNTHETIC_ERRNO(EPERM), | |
4065 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
4066 | major(partition_devno), minor(partition_devno), | |
4067 | major(restrict_devno), minor(restrict_devno)); | |
4068 | ||
ca822829 | 4069 | fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p); |
5c08da58 | 4070 | if (r < 0) |
ca822829 YW |
4071 | return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m", |
4072 | DEVNUM_FORMAT_VAL(whole_devno)); | |
5c08da58 LP |
4073 | |
4074 | b = blkid_new_probe(); | |
4075 | if (!b) | |
4076 | return log_oom(); | |
4077 | ||
4078 | errno = 0; | |
4079 | r = blkid_probe_set_device(b, fd, 0, 0); | |
4080 | if (r != 0) | |
4081 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
4082 | ||
4083 | (void) blkid_probe_enable_partitions(b, 1); | |
4084 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
4085 | ||
4086 | errno = 0; | |
4087 | r = blkid_do_safeprobe(b); | |
4088 | if (IN_SET(r, -2, 1)) { /* nothing found or ambiguous result */ | |
4089 | log_debug("Didn't find partition table on block device '%s'.", p); | |
4090 | return false; | |
4091 | } | |
4092 | if (r != 0) | |
4093 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
4094 | ||
4095 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
4096 | if (!streq_ptr(pttype, "gpt")) { | |
4097 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
4098 | return false; | |
4099 | } | |
4100 | ||
4101 | errno = 0; | |
4102 | pl = blkid_probe_get_partitions(b); | |
4103 | if (!pl) | |
4104 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
4105 | errno = 0; | |
4106 | ||
4107 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
4108 | if (!pp) { | |
4109 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
4110 | major(partition_devno), minor(partition_devno), p); | |
4111 | return false; | |
4112 | } | |
4113 | ||
4114 | t = blkid_partition_get_type_string(pp); | |
4115 | if (isempty(t)) { | |
4116 | log_debug("Partition %u:%u has no type on '%s'.", | |
4117 | major(partition_devno), minor(partition_devno), p); | |
4118 | return false; | |
4119 | } | |
4120 | ||
4121 | r = sd_id128_from_string(t, &pt_parsed); | |
4122 | if (r < 0) { | |
4123 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
4124 | return false; | |
4125 | } | |
4126 | ||
4127 | if (!sd_id128_equal(pt_parsed, partition_type_uuid)) { | |
4128 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", | |
4129 | major(partition_devno), minor(partition_devno), | |
4130 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type_uuid)); | |
4131 | return false; | |
4132 | } | |
4133 | ||
4134 | t = blkid_partition_get_uuid(pp); | |
4135 | if (isempty(t)) { | |
4136 | log_debug("Partition %u:%u has no UUID.", | |
4137 | major(partition_devno), minor(partition_devno)); | |
4138 | return false; | |
4139 | } | |
4140 | ||
4141 | r = sd_id128_from_string(t, &u); | |
4142 | if (r < 0) { | |
4143 | log_debug_errno(r, "Failed to parse partition UUID \"%s\": %m", t); | |
4144 | return false; | |
4145 | } | |
4146 | ||
4147 | log_debug("Automatically found partition %u:%u of right type " SD_ID128_FORMAT_STR ".", | |
4148 | major(partition_devno), minor(partition_devno), | |
4149 | SD_ID128_FORMAT_VAL(pt_parsed)); | |
4150 | ||
4151 | if (ret_uuid) | |
4152 | *ret_uuid = u; | |
4153 | ||
4154 | return true; | |
4155 | } | |
4156 | ||
4157 | static int find_backing_devno( | |
4158 | const char *path, | |
4159 | const char *root, | |
4160 | dev_t *ret) { | |
4161 | ||
4162 | _cleanup_free_ char *resolved = NULL; | |
4163 | int r; | |
4164 | ||
4165 | assert(path); | |
4166 | ||
4167 | r = chase_symlinks(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); | |
4168 | if (r < 0) | |
4169 | return r; | |
4170 | ||
4171 | r = path_is_mount_point(resolved, NULL, 0); | |
4172 | if (r < 0) | |
4173 | return r; | |
4174 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
4175 | return -ENOENT; | |
4176 | ||
4177 | r = get_block_device(resolved, ret); | |
4178 | if (r < 0) | |
4179 | return r; | |
4180 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
4181 | return -ENOENT; | |
4182 | ||
4183 | return 0; | |
4184 | } | |
4185 | ||
4186 | static int resolve_copy_blocks_auto( | |
4187 | sd_id128_t type_uuid, | |
4188 | const char *root, | |
4189 | dev_t restrict_devno, | |
1a037ba2 | 4190 | dev_t *ret_devno, |
5c08da58 LP |
4191 | sd_id128_t *ret_uuid) { |
4192 | ||
4193 | const char *try1 = NULL, *try2 = NULL; | |
4194 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
4195 | _cleanup_(closedirp) DIR *d = NULL; | |
4196 | sd_id128_t found_uuid = SD_ID128_NULL; | |
4197 | dev_t devno, found = 0; | |
4198 | int r; | |
4199 | ||
5c08da58 LP |
4200 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the |
4201 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
4202 | * and restrict block device references in the --image= case to loopback block device we set up. | |
4203 | * | |
4204 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
4205 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
4206 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
4207 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
4208 | ||
4209 | if (restrict_devno == 0) | |
4210 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
4211 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
4212 | ||
4213 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching | |
4214 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
4215 | * type matches. */ | |
4216 | ||
4217 | if (gpt_partition_type_is_root(type_uuid)) | |
4218 | try1 = "/"; | |
4219 | else if (gpt_partition_type_is_usr(type_uuid)) | |
4220 | try1 = "/usr/"; | |
4221 | else if (gpt_partition_type_is_root_verity(type_uuid)) | |
4222 | try1 = "/"; | |
4223 | else if (gpt_partition_type_is_usr_verity(type_uuid)) | |
4224 | try1 = "/usr/"; | |
4225 | else if (sd_id128_equal(type_uuid, GPT_ESP)) { | |
4226 | try1 = "/efi/"; | |
4227 | try2 = "/boot/"; | |
4228 | } else if (sd_id128_equal(type_uuid, GPT_XBOOTLDR)) | |
4229 | try1 = "/boot/"; | |
4230 | else | |
4231 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
4232 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
4233 | SD_ID128_FORMAT_VAL(type_uuid)); | |
4234 | ||
4235 | r = find_backing_devno(try1, root, &devno); | |
4236 | if (r == -ENOENT && try2) | |
4237 | r = find_backing_devno(try2, root, &devno); | |
4238 | if (r < 0) | |
4239 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
4240 | SD_ID128_FORMAT_VAL(type_uuid)); | |
4241 | ||
4242 | xsprintf_sys_block_path(p, "/slaves", devno); | |
4243 | d = opendir(p); | |
4244 | if (d) { | |
4245 | struct dirent *de; | |
4246 | ||
4247 | for (;;) { | |
4248 | _cleanup_free_ char *q = NULL, *t = NULL; | |
4249 | sd_id128_t u; | |
4250 | dev_t sl; | |
4251 | ||
4252 | errno = 0; | |
4253 | de = readdir_no_dot(d); | |
4254 | if (!de) { | |
4255 | if (errno != 0) | |
4256 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
4257 | ||
4258 | break; | |
4259 | } | |
4260 | ||
4261 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
4262 | continue; | |
4263 | ||
4264 | q = path_join(p, de->d_name, "/dev"); | |
4265 | if (!q) | |
4266 | return log_oom(); | |
4267 | ||
4268 | r = read_one_line_file(q, &t); | |
4269 | if (r < 0) | |
4270 | return log_error_errno(r, "Failed to read %s: %m", q); | |
4271 | ||
7176f06c | 4272 | r = parse_devnum(t, &sl); |
5c08da58 LP |
4273 | if (r < 0) { |
4274 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
4275 | continue; | |
4276 | } | |
4277 | if (major(sl) == 0) { | |
4278 | log_debug_errno(r, "Device backing %s is special, ignoring: %m", q); | |
4279 | continue; | |
4280 | } | |
4281 | ||
4282 | r = resolve_copy_blocks_auto_candidate(sl, type_uuid, restrict_devno, &u); | |
4283 | if (r < 0) | |
4284 | return r; | |
4285 | if (r > 0) { | |
4286 | /* We found a matching one! */ | |
4287 | if (found != 0) | |
4288 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
4289 | "Multiple matching partitions found, refusing."); | |
4290 | ||
4291 | found = sl; | |
4292 | found_uuid = u; | |
4293 | } | |
4294 | } | |
4295 | } else if (errno != ENOENT) | |
4296 | return log_error_errno(errno, "Failed open %s: %m", p); | |
4297 | else { | |
4298 | r = resolve_copy_blocks_auto_candidate(devno, type_uuid, restrict_devno, &found_uuid); | |
4299 | if (r < 0) | |
4300 | return r; | |
4301 | if (r > 0) | |
4302 | found = devno; | |
4303 | } | |
4304 | ||
4305 | if (found == 0) | |
4306 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
4307 | "Unable to automatically discover suitable partition to copy blocks from."); | |
4308 | ||
1a037ba2 YW |
4309 | if (ret_devno) |
4310 | *ret_devno = found; | |
5c08da58 LP |
4311 | |
4312 | if (ret_uuid) | |
4313 | *ret_uuid = found_uuid; | |
4314 | ||
4315 | return 0; | |
4316 | } | |
4317 | ||
4318 | static int context_open_copy_block_paths( | |
4319 | Context *context, | |
4320 | const char *root, | |
4321 | dev_t restrict_devno) { | |
4322 | ||
757bc2e4 LP |
4323 | int r; |
4324 | ||
4325 | assert(context); | |
4326 | ||
4327 | LIST_FOREACH(partitions, p, context->partitions) { | |
4328 | _cleanup_close_ int source_fd = -1; | |
5c08da58 LP |
4329 | _cleanup_free_ char *opened = NULL; |
4330 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
4331 | uint64_t size; |
4332 | struct stat st; | |
4333 | ||
4334 | assert(p->copy_blocks_fd < 0); | |
4335 | assert(p->copy_blocks_size == UINT64_MAX); | |
4336 | ||
4337 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
4338 | continue; | |
4339 | ||
5c08da58 | 4340 | if (p->copy_blocks_path) { |
757bc2e4 | 4341 | |
5c08da58 LP |
4342 | source_fd = chase_symlinks_and_open(p->copy_blocks_path, root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
4343 | if (source_fd < 0) | |
4344 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 4345 | |
5c08da58 LP |
4346 | if (fstat(source_fd, &st) < 0) |
4347 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
4348 | ||
4349 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
4350 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
4351 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
4352 | ||
4353 | } else if (p->copy_blocks_auto) { | |
1a037ba2 | 4354 | dev_t devno; |
5c08da58 | 4355 | |
1a037ba2 | 4356 | r = resolve_copy_blocks_auto(p->type_uuid, root, restrict_devno, &devno, &uuid); |
5c08da58 LP |
4357 | if (r < 0) |
4358 | return r; | |
4359 | ||
ca822829 | 4360 | source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
1a037ba2 | 4361 | if (r < 0) |
ca822829 YW |
4362 | return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m", |
4363 | DEVNUM_FORMAT_VAL(devno)); | |
5c08da58 LP |
4364 | |
4365 | if (fstat(source_fd, &st) < 0) | |
4366 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
1a037ba2 | 4367 | } else |
5c08da58 | 4368 | continue; |
757bc2e4 LP |
4369 | |
4370 | if (S_ISDIR(st.st_mode)) { | |
ca822829 YW |
4371 | _cleanup_free_ char *bdev = NULL; |
4372 | dev_t devt; | |
757bc2e4 LP |
4373 | |
4374 | /* If the file is a directory, automatically find the backing block device */ | |
4375 | ||
4376 | if (major(st.st_dev) != 0) | |
ca822829 | 4377 | devt = st.st_dev; |
757bc2e4 | 4378 | else { |
757bc2e4 | 4379 | /* Special support for btrfs */ |
757bc2e4 | 4380 | r = btrfs_get_block_device_fd(source_fd, &devt); |
67f0ac8c | 4381 | if (r == -EUCLEAN) |
5c08da58 | 4382 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 4383 | if (r < 0) |
5c08da58 | 4384 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 | 4385 | } |
757bc2e4 LP |
4386 | |
4387 | safe_close(source_fd); | |
4388 | ||
ca822829 YW |
4389 | source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev); |
4390 | if (r < 0) | |
4391 | return log_error_errno(r, "Failed to open block device backing '%s': %m", opened); | |
757bc2e4 LP |
4392 | |
4393 | if (fstat(source_fd, &st) < 0) | |
4394 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
757bc2e4 LP |
4395 | } |
4396 | ||
4397 | if (S_ISREG(st.st_mode)) | |
4398 | size = st.st_size; | |
4399 | else if (S_ISBLK(st.st_mode)) { | |
4400 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
4401 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
4402 | } else | |
5c08da58 | 4403 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Specified path to copy blocks from '%s' is not a regular file, block device or directory, refusing: %m", opened); |
757bc2e4 LP |
4404 | |
4405 | if (size <= 0) | |
5c08da58 | 4406 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 4407 | if (size % 512 != 0) |
5c08da58 | 4408 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has size that is not multiple of 512, refusing.", opened); |
757bc2e4 LP |
4409 | |
4410 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
4411 | p->copy_blocks_size = size; | |
5c08da58 LP |
4412 | |
4413 | free_and_replace(p->copy_blocks_path, opened); | |
4414 | ||
4415 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
11749b61 | 4416 | if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) { |
5c08da58 | 4417 | p->new_uuid = uuid; |
11749b61 DDM |
4418 | p->new_uuid_is_set = true; |
4419 | } | |
757bc2e4 LP |
4420 | } |
4421 | ||
4422 | return 0; | |
4423 | } | |
4424 | ||
e594a3b1 LP |
4425 | static int help(void) { |
4426 | _cleanup_free_ char *link = NULL; | |
4427 | int r; | |
4428 | ||
4429 | r = terminal_urlify_man("systemd-repart", "1", &link); | |
4430 | if (r < 0) | |
4431 | return log_oom(); | |
4432 | ||
4433 | printf("%s [OPTIONS...] [DEVICE]\n" | |
4434 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
4435 | " -h --help Show this help\n" | |
4436 | " --version Show package version\n" | |
896e678b LP |
4437 | " --no-pager Do not pipe output into a pager\n" |
4438 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 4439 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
4440 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
4441 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 4442 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 4443 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
4444 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
4445 | " them\n" | |
4446 | " --can-factory-reset Test whether factory reset is defined\n" | |
4447 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 4448 | " --image=PATH Operate relative to image file\n" |
9d252fbb | 4449 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 4450 | " --key-file=PATH Key to use when encrypting partitions\n" |
889914ef | 4451 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 4452 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 4453 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
e594a3b1 | 4454 | " --seed=UUID 128bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 4455 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 4456 | " --json=pretty|short|off\n" |
de8231b0 | 4457 | " Generate JSON output\n" |
bc556335 DDM |
4458 | "\nSee the %s for details.\n", |
4459 | program_invocation_short_name, | |
4460 | ansi_highlight(), | |
4461 | ansi_normal(), | |
4462 | link); | |
e594a3b1 LP |
4463 | |
4464 | return 0; | |
4465 | } | |
4466 | ||
4467 | static int parse_argv(int argc, char *argv[]) { | |
4468 | ||
4469 | enum { | |
4470 | ARG_VERSION = 0x100, | |
896e678b LP |
4471 | ARG_NO_PAGER, |
4472 | ARG_NO_LEGEND, | |
e594a3b1 LP |
4473 | ARG_DRY_RUN, |
4474 | ARG_EMPTY, | |
4475 | ARG_DISCARD, | |
4476 | ARG_FACTORY_RESET, | |
4477 | ARG_CAN_FACTORY_RESET, | |
4478 | ARG_ROOT, | |
252d6267 | 4479 | ARG_IMAGE, |
e594a3b1 LP |
4480 | ARG_SEED, |
4481 | ARG_PRETTY, | |
4482 | ARG_DEFINITIONS, | |
a26f4a49 | 4483 | ARG_SIZE, |
a015fbe7 | 4484 | ARG_JSON, |
b9df3536 | 4485 | ARG_KEY_FILE, |
889914ef LP |
4486 | ARG_TPM2_DEVICE, |
4487 | ARG_TPM2_PCRS, | |
e594a3b1 LP |
4488 | }; |
4489 | ||
4490 | static const struct option options[] = { | |
4491 | { "help", no_argument, NULL, 'h' }, | |
4492 | { "version", no_argument, NULL, ARG_VERSION }, | |
896e678b LP |
4493 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
4494 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
e594a3b1 LP |
4495 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, |
4496 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
4497 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
4498 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
4499 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
4500 | { "root", required_argument, NULL, ARG_ROOT }, | |
252d6267 | 4501 | { "image", required_argument, NULL, ARG_IMAGE }, |
e594a3b1 LP |
4502 | { "seed", required_argument, NULL, ARG_SEED }, |
4503 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
4504 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
a26f4a49 | 4505 | { "size", required_argument, NULL, ARG_SIZE }, |
a015fbe7 | 4506 | { "json", required_argument, NULL, ARG_JSON }, |
b9df3536 | 4507 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, |
889914ef LP |
4508 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
4509 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
e594a3b1 LP |
4510 | {} |
4511 | }; | |
4512 | ||
a26f4a49 | 4513 | int c, r, dry_run = -1; |
e594a3b1 LP |
4514 | |
4515 | assert(argc >= 0); | |
4516 | assert(argv); | |
4517 | ||
4518 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
4519 | ||
4520 | switch (c) { | |
4521 | ||
4522 | case 'h': | |
4523 | return help(); | |
4524 | ||
4525 | case ARG_VERSION: | |
4526 | return version(); | |
4527 | ||
896e678b LP |
4528 | case ARG_NO_PAGER: |
4529 | arg_pager_flags |= PAGER_DISABLE; | |
4530 | break; | |
4531 | ||
4532 | case ARG_NO_LEGEND: | |
4533 | arg_legend = false; | |
4534 | break; | |
4535 | ||
e594a3b1 | 4536 | case ARG_DRY_RUN: |
599c7c54 | 4537 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 4538 | if (r < 0) |
599c7c54 | 4539 | return r; |
e594a3b1 LP |
4540 | break; |
4541 | ||
4542 | case ARG_EMPTY: | |
4543 | if (isempty(optarg) || streq(optarg, "refuse")) | |
4544 | arg_empty = EMPTY_REFUSE; | |
4545 | else if (streq(optarg, "allow")) | |
4546 | arg_empty = EMPTY_ALLOW; | |
4547 | else if (streq(optarg, "require")) | |
4548 | arg_empty = EMPTY_REQUIRE; | |
4549 | else if (streq(optarg, "force")) | |
4550 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
4551 | else if (streq(optarg, "create")) { |
4552 | arg_empty = EMPTY_CREATE; | |
4553 | ||
4554 | if (dry_run < 0) | |
4555 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
4556 | * anew. After all we cannot really break anyone's | |
4557 | * partition tables that way. */ | |
4558 | } else | |
e594a3b1 LP |
4559 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
4560 | "Failed to parse --empty= parameter: %s", optarg); | |
4561 | break; | |
4562 | ||
4563 | case ARG_DISCARD: | |
599c7c54 | 4564 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 4565 | if (r < 0) |
599c7c54 | 4566 | return r; |
e594a3b1 LP |
4567 | break; |
4568 | ||
4569 | case ARG_FACTORY_RESET: | |
c3470872 | 4570 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 4571 | if (r < 0) |
c3470872 | 4572 | return r; |
e594a3b1 LP |
4573 | arg_factory_reset = r; |
4574 | break; | |
4575 | ||
4576 | case ARG_CAN_FACTORY_RESET: | |
4577 | arg_can_factory_reset = true; | |
4578 | break; | |
4579 | ||
4580 | case ARG_ROOT: | |
252d6267 LP |
4581 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
4582 | if (r < 0) | |
4583 | return r; | |
4584 | break; | |
4585 | ||
4586 | case ARG_IMAGE: | |
4587 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
4588 | if (r < 0) |
4589 | return r; | |
4590 | break; | |
4591 | ||
4592 | case ARG_SEED: | |
4593 | if (isempty(optarg)) { | |
4594 | arg_seed = SD_ID128_NULL; | |
4595 | arg_randomize = false; | |
4596 | } else if (streq(optarg, "random")) | |
4597 | arg_randomize = true; | |
4598 | else { | |
4599 | r = sd_id128_from_string(optarg, &arg_seed); | |
4600 | if (r < 0) | |
4601 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
4602 | ||
4603 | arg_randomize = false; | |
4604 | } | |
4605 | ||
4606 | break; | |
4607 | ||
4608 | case ARG_PRETTY: | |
c3470872 | 4609 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 4610 | if (r < 0) |
c3470872 | 4611 | return r; |
e594a3b1 LP |
4612 | arg_pretty = r; |
4613 | break; | |
4614 | ||
224c853f RP |
4615 | case ARG_DEFINITIONS: { |
4616 | _cleanup_free_ char *path = NULL; | |
4617 | r = parse_path_argument(optarg, false, &path); | |
e594a3b1 LP |
4618 | if (r < 0) |
4619 | return r; | |
224c853f RP |
4620 | if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0) |
4621 | return log_oom(); | |
e594a3b1 | 4622 | break; |
224c853f | 4623 | } |
e594a3b1 | 4624 | |
a26f4a49 LP |
4625 | case ARG_SIZE: { |
4626 | uint64_t parsed, rounded; | |
4627 | ||
170c9823 LP |
4628 | if (streq(optarg, "auto")) { |
4629 | arg_size = UINT64_MAX; | |
4630 | arg_size_auto = true; | |
4631 | break; | |
4632 | } | |
4633 | ||
a26f4a49 LP |
4634 | r = parse_size(optarg, 1024, &parsed); |
4635 | if (r < 0) | |
4636 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
4637 | ||
4638 | rounded = round_up_size(parsed, 4096); | |
4639 | if (rounded == 0) | |
4640 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
4641 | if (rounded == UINT64_MAX) | |
4642 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
4643 | ||
4644 | if (rounded != parsed) | |
e2341b6b DT |
4645 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")", |
4646 | parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded); | |
a26f4a49 LP |
4647 | |
4648 | arg_size = rounded; | |
170c9823 | 4649 | arg_size_auto = false; |
a26f4a49 LP |
4650 | break; |
4651 | } | |
b9df3536 | 4652 | |
a015fbe7 | 4653 | case ARG_JSON: |
b1e8f46c | 4654 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
4655 | if (r <= 0) |
4656 | return r; | |
a015fbe7 TH |
4657 | |
4658 | break; | |
4659 | ||
b9df3536 LP |
4660 | case ARG_KEY_FILE: { |
4661 | _cleanup_(erase_and_freep) char *k = NULL; | |
4662 | size_t n = 0; | |
4663 | ||
8b3c3a49 | 4664 | r = read_full_file_full( |
986311c2 | 4665 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
4666 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
4667 | NULL, | |
4668 | &k, &n); | |
b9df3536 LP |
4669 | if (r < 0) |
4670 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
4671 | ||
4672 | erase_and_free(arg_key); | |
4673 | arg_key = TAKE_PTR(k); | |
4674 | arg_key_size = n; | |
4675 | break; | |
4676 | } | |
a26f4a49 | 4677 | |
889914ef LP |
4678 | case ARG_TPM2_DEVICE: { |
4679 | _cleanup_free_ char *device = NULL; | |
4680 | ||
4681 | if (streq(optarg, "list")) | |
4682 | return tpm2_list_devices(); | |
4683 | ||
4684 | if (!streq(optarg, "auto")) { | |
4685 | device = strdup(optarg); | |
4686 | if (!device) | |
4687 | return log_oom(); | |
4688 | } | |
4689 | ||
4690 | free(arg_tpm2_device); | |
4691 | arg_tpm2_device = TAKE_PTR(device); | |
4692 | break; | |
4693 | } | |
4694 | ||
222a951f LP |
4695 | case ARG_TPM2_PCRS: |
4696 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_pcr_mask); | |
889914ef LP |
4697 | if (r < 0) |
4698 | return r; | |
4699 | ||
889914ef | 4700 | break; |
889914ef | 4701 | |
e594a3b1 LP |
4702 | case '?': |
4703 | return -EINVAL; | |
4704 | ||
4705 | default: | |
04499a70 | 4706 | assert_not_reached(); |
e594a3b1 LP |
4707 | } |
4708 | ||
4709 | if (argc - optind > 1) | |
4710 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
4711 | "Expected at most one argument, the path to the block device."); | |
4712 | ||
a26f4a49 | 4713 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 4714 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 4715 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
4716 | |
4717 | if (arg_can_factory_reset) | |
a26f4a49 LP |
4718 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
4719 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
4720 | * open things strictly read-only. */ | |
4721 | else if (dry_run >= 0) | |
4722 | arg_dry_run = dry_run; | |
4723 | ||
170c9823 | 4724 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
4725 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
4726 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 4727 | |
252d6267 LP |
4728 | if (arg_image && arg_root) |
4729 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
4730 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
4731 | |
4732 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
4733 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
4734 | * is vendor-supplied but the root fs formatted on first boot. */ | |
4735 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
4736 | if (r <= 0) { | |
4737 | if (r < 0 && r != -ENOENT) | |
4738 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
4739 | ||
4740 | arg_root = strdup("/sysroot"); | |
4741 | } else | |
4742 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
4743 | if (!arg_root) |
4744 | return log_oom(); | |
4745 | } | |
4746 | ||
e594a3b1 | 4747 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 4748 | |
252d6267 | 4749 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
4750 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
4751 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
4752 | ||
889914ef LP |
4753 | if (arg_tpm2_pcr_mask == UINT32_MAX) |
4754 | arg_tpm2_pcr_mask = TPM2_PCR_MASK_DEFAULT; | |
4755 | ||
a26d463d DDM |
4756 | if (arg_pretty < 0 && isatty(STDOUT_FILENO)) |
4757 | arg_pretty = true; | |
4758 | ||
e594a3b1 LP |
4759 | return 1; |
4760 | } | |
4761 | ||
4762 | static int parse_proc_cmdline_factory_reset(void) { | |
4763 | bool b; | |
4764 | int r; | |
4765 | ||
4766 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
4767 | return 0; | |
4768 | ||
4769 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
4770 | return 0; | |
4771 | ||
4772 | r = proc_cmdline_get_bool("systemd.factory_reset", &b); | |
4773 | if (r < 0) | |
4774 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
4775 | if (r > 0) { | |
4776 | arg_factory_reset = b; | |
4777 | ||
4778 | if (b) | |
4779 | log_notice("Honouring factory reset requested via kernel command line."); | |
4780 | } | |
4781 | ||
4782 | return 0; | |
4783 | } | |
4784 | ||
4785 | static int parse_efi_variable_factory_reset(void) { | |
4786 | _cleanup_free_ char *value = NULL; | |
4787 | int r; | |
4788 | ||
4789 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
4790 | return 0; | |
4791 | ||
4792 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
4793 | return 0; | |
4794 | ||
e6f055cb | 4795 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
e594a3b1 LP |
4796 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
4797 | return 0; | |
4798 | if (r < 0) | |
4799 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); | |
4800 | ||
4801 | r = parse_boolean(value); | |
4802 | if (r < 0) | |
4803 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
4804 | ||
4805 | arg_factory_reset = r; | |
4806 | if (r) | |
111a3aae | 4807 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
4808 | |
4809 | return 0; | |
4810 | } | |
4811 | ||
4812 | static int remove_efi_variable_factory_reset(void) { | |
4813 | int r; | |
4814 | ||
e6f055cb | 4815 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
e594a3b1 LP |
4816 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
4817 | return 0; | |
4818 | if (r < 0) | |
4819 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); | |
4820 | ||
4821 | log_info("Successfully unset EFI variable FactoryReset."); | |
4822 | return 0; | |
4823 | } | |
4824 | ||
252d6267 LP |
4825 | static int acquire_root_devno( |
4826 | const char *p, | |
4827 | const char *root, | |
4828 | int mode, | |
4829 | char **ret, | |
4830 | int *ret_fd) { | |
4831 | ||
4832 | _cleanup_free_ char *found_path = NULL; | |
4833 | dev_t devno, fd_devno = MODE_INVALID; | |
e594a3b1 LP |
4834 | _cleanup_close_ int fd = -1; |
4835 | struct stat st; | |
e594a3b1 LP |
4836 | int r; |
4837 | ||
a26f4a49 LP |
4838 | assert(p); |
4839 | assert(ret); | |
4840 | assert(ret_fd); | |
4841 | ||
252d6267 | 4842 | fd = chase_symlinks_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 4843 | if (fd < 0) |
252d6267 | 4844 | return fd; |
e594a3b1 LP |
4845 | |
4846 | if (fstat(fd, &st) < 0) | |
4847 | return -errno; | |
4848 | ||
4849 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 4850 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 4851 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
4852 | return 0; |
4853 | } | |
4854 | ||
252d6267 LP |
4855 | if (S_ISBLK(st.st_mode)) { |
4856 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 4857 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
4858 | if (root) |
4859 | return -EPERM; | |
4860 | ||
a26f4a49 | 4861 | fd_devno = devno = st.st_rdev; |
252d6267 | 4862 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
4863 | |
4864 | devno = st.st_dev; | |
a26f4a49 | 4865 | if (major(devno) == 0) { |
e594a3b1 LP |
4866 | r = btrfs_get_block_device_fd(fd, &devno); |
4867 | if (r == -ENOTTY) /* not btrfs */ | |
4868 | return -ENODEV; | |
4869 | if (r < 0) | |
4870 | return r; | |
4871 | } | |
e594a3b1 LP |
4872 | } else |
4873 | return -ENOTBLK; | |
4874 | ||
4875 | /* From dm-crypt to backing partition */ | |
4876 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
4877 | if (r == -ENOENT) |
4878 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
4879 | else if (r < 0) | |
e594a3b1 LP |
4880 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
4881 | ||
4882 | /* From partition to whole disk containing it */ | |
4883 | r = block_get_whole_disk(devno, &devno); | |
4884 | if (r < 0) | |
162392b7 | 4885 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 4886 | |
4fe46c34 | 4887 | r = devname_from_devnum(S_IFBLK, devno, ret); |
a26f4a49 LP |
4888 | if (r < 0) |
4889 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
4890 | ||
6bbae9f8 | 4891 | /* Only if we still look at the same block device we can reuse the fd. Otherwise return an |
a26f4a49 | 4892 | * invalidated fd. */ |
f5fbe71d | 4893 | *ret_fd = fd_devno != MODE_INVALID && fd_devno == devno ? TAKE_FD(fd) : -1; |
a26f4a49 | 4894 | return 0; |
e594a3b1 LP |
4895 | } |
4896 | ||
a26f4a49 | 4897 | static int find_root(char **ret, int *ret_fd) { |
54632d2e | 4898 | _cleanup_free_ char *device = NULL; |
5980d463 | 4899 | int r; |
e594a3b1 | 4900 | |
a26f4a49 LP |
4901 | assert(ret); |
4902 | assert(ret_fd); | |
4903 | ||
e594a3b1 | 4904 | if (arg_node) { |
a26f4a49 LP |
4905 | if (arg_empty == EMPTY_CREATE) { |
4906 | _cleanup_close_ int fd = -1; | |
4907 | _cleanup_free_ char *s = NULL; | |
4908 | ||
4909 | s = strdup(arg_node); | |
4910 | if (!s) | |
4911 | return log_oom(); | |
4912 | ||
5332d7c6 | 4913 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
4914 | if (fd < 0) |
4915 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
4916 | ||
4917 | *ret = TAKE_PTR(s); | |
4918 | *ret_fd = TAKE_FD(fd); | |
4919 | return 0; | |
4920 | } | |
4921 | ||
252d6267 LP |
4922 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
4923 | * we'll take it relative to the host, not the image */ | |
4924 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, ret, ret_fd); | |
67f0ac8c LP |
4925 | if (r == -EUCLEAN) |
4926 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 4927 | if (r < 0) |
aa2a74ad | 4928 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
4929 | |
4930 | return 0; | |
4931 | } | |
4932 | ||
a26f4a49 LP |
4933 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
4934 | ||
54632d2e KK |
4935 | /* If the root mount has been replaced by some form of volatile file system (overlayfs), the |
4936 | * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that | |
4937 | * here. */ | |
4938 | r = readlink_malloc("/run/systemd/volatile-root", &device); | |
4939 | if (r == -ENOENT) { /* volatile-root not found */ | |
4940 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The | |
4941 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
4942 | * (think: volatile setups) */ | |
e594a3b1 | 4943 | |
54632d2e | 4944 | FOREACH_STRING(p, "/", "/usr") { |
e594a3b1 | 4945 | |
54632d2e KK |
4946 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, ret, ret_fd); |
4947 | if (r < 0) { | |
4948 | if (r == -EUCLEAN) | |
4949 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
4950 | if (r != -ENODEV) | |
4951 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
4952 | } else | |
4953 | return 0; | |
4954 | } | |
4955 | } else if (r < 0) | |
4956 | return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m"); | |
4957 | else { | |
4958 | r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, ret, ret_fd); | |
4959 | if (r == -EUCLEAN) | |
4960 | return btrfs_log_dev_root(LOG_ERR, r, device); | |
4961 | if (r < 0) | |
4962 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device); | |
4963 | ||
4964 | return 0; | |
e594a3b1 LP |
4965 | } |
4966 | ||
4967 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
4968 | } | |
4969 | ||
f9b3afae | 4970 | static int resize_pt(int fd) { |
f9b3afae LP |
4971 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
4972 | int r; | |
4973 | ||
4974 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
4975 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
4976 | * immediately write it again, with no changes. */ | |
4977 | ||
4978 | c = fdisk_new_context(); | |
4979 | if (!c) | |
4980 | return log_oom(); | |
4981 | ||
ddb6eeaf | 4982 | r = fdisk_assign_device(c, FORMAT_PROC_FD_PATH(fd), 0); |
f9b3afae | 4983 | if (r < 0) |
ddb6eeaf | 4984 | return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
4985 | |
4986 | r = fdisk_has_label(c); | |
4987 | if (r < 0) | |
ddb6eeaf | 4988 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
4989 | if (r == 0) { |
4990 | log_debug("Not resizing partition table, as there currently is none."); | |
4991 | return 0; | |
4992 | } | |
4993 | ||
4994 | r = fdisk_write_disklabel(c); | |
4995 | if (r < 0) | |
4996 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
4997 | ||
4998 | log_info("Resized partition table."); | |
4999 | return 1; | |
5000 | } | |
5001 | ||
252d6267 LP |
5002 | static int resize_backing_fd( |
5003 | const char *node, /* The primary way we access the disk image to operate on */ | |
5004 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
5005 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
5006 | LoopDevice *loop_device) { | |
5007 | ||
a26f4a49 | 5008 | _cleanup_close_ int writable_fd = -1; |
252d6267 | 5009 | uint64_t current_size; |
a26f4a49 LP |
5010 | struct stat st; |
5011 | int r; | |
5012 | ||
5013 | assert(node); | |
5014 | assert(fd); | |
5015 | ||
5016 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
5017 | return 0; | |
5018 | ||
5019 | if (*fd < 0) { | |
5020 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
5021 | * keep a reference to the file we can pass around. */ | |
5022 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
5023 | if (*fd < 0) | |
5024 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
5025 | } | |
5026 | ||
5027 | if (fstat(*fd, &st) < 0) | |
5028 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
5029 | ||
252d6267 LP |
5030 | if (S_ISBLK(st.st_mode)) { |
5031 | if (!backing_file) | |
5032 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
5033 | ||
5034 | assert(loop_device); | |
a26f4a49 | 5035 | |
252d6267 LP |
5036 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
5037 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
5038 | } else { | |
5039 | r = stat_verify_regular(&st); | |
5040 | if (r < 0) | |
5041 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
5042 | ||
5043 | assert(!backing_file); | |
5044 | assert(!loop_device); | |
5045 | current_size = st.st_size; | |
5046 | } | |
5047 | ||
252d6267 | 5048 | if (current_size >= arg_size) { |
2b59bf51 ZJS |
5049 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", |
5050 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 LP |
5051 | return 0; |
5052 | } | |
5053 | ||
252d6267 LP |
5054 | if (S_ISBLK(st.st_mode)) { |
5055 | assert(backing_file); | |
5056 | ||
5057 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
5058 | * backing file, hence let's do that. */ | |
5059 | ||
5060 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
5061 | if (writable_fd < 0) | |
5062 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
5063 | ||
5064 | if (fstat(writable_fd, &st) < 0) | |
5065 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
5066 | ||
5067 | r = stat_verify_regular(&st); | |
5068 | if (r < 0) | |
5069 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
5070 | ||
5071 | if ((uint64_t) st.st_size != current_size) | |
5072 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2b59bf51 ZJS |
5073 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", |
5074 | node, backing_file); | |
252d6267 LP |
5075 | } else { |
5076 | assert(S_ISREG(st.st_mode)); | |
5077 | assert(!backing_file); | |
a26f4a49 | 5078 | |
252d6267 LP |
5079 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
5080 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
5081 | * as fdisk can't accept it anyway. */ | |
5082 | ||
5083 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
5084 | if (writable_fd < 0) | |
5085 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
5086 | } | |
a26f4a49 LP |
5087 | |
5088 | if (!arg_discard) { | |
5089 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
5090 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
5091 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
2b59bf51 | 5092 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 LP |
5093 | |
5094 | /* Fallback to truncation, if fallocate() is not supported. */ | |
5095 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
5096 | } else { | |
252d6267 | 5097 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 5098 | log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node); |
a26f4a49 | 5099 | else |
2b59bf51 ZJS |
5100 | log_info("File '%s' grown from %s to %s by allocation.", |
5101 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 | 5102 | |
252d6267 | 5103 | goto done; |
a26f4a49 LP |
5104 | } |
5105 | } | |
5106 | ||
5107 | if (ftruncate(writable_fd, arg_size) < 0) | |
5108 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
2b59bf51 | 5109 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 | 5110 | |
252d6267 | 5111 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 5112 | log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size)); |
252d6267 | 5113 | else |
2b59bf51 ZJS |
5114 | log_info("File '%s' grown from %s to %s by truncation.", |
5115 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
252d6267 LP |
5116 | |
5117 | done: | |
f9b3afae LP |
5118 | r = resize_pt(writable_fd); |
5119 | if (r < 0) | |
5120 | return r; | |
5121 | ||
252d6267 LP |
5122 | if (loop_device) { |
5123 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
5124 | if (r < 0) | |
5125 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
5126 | } | |
a26f4a49 LP |
5127 | |
5128 | return 1; | |
5129 | } | |
5130 | ||
170c9823 | 5131 | static int determine_auto_size(Context *c) { |
994b3031 | 5132 | uint64_t sum; |
170c9823 | 5133 | |
ac33e147 | 5134 | assert(c); |
170c9823 | 5135 | |
994b3031 LP |
5136 | sum = round_up_size(GPT_METADATA_SIZE, 4096); |
5137 | ||
170c9823 LP |
5138 | LIST_FOREACH(partitions, p, c->partitions) { |
5139 | uint64_t m; | |
5140 | ||
5141 | if (p->dropped) | |
5142 | continue; | |
5143 | ||
994b3031 | 5144 | m = partition_min_size_with_padding(c, p); |
170c9823 LP |
5145 | if (m > UINT64_MAX - sum) |
5146 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
5147 | ||
5148 | sum += m; | |
5149 | } | |
5150 | ||
2b59bf51 ZJS |
5151 | if (c->total != UINT64_MAX) |
5152 | /* Image already allocated? Then show its size. */ | |
5153 | log_info("Automatically determined minimal disk image size as %s, current image size is %s.", | |
5154 | FORMAT_BYTES(sum), FORMAT_BYTES(c->total)); | |
5155 | else | |
5156 | /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */ | |
5157 | log_info("Automatically determined minimal disk image size as %s.", | |
5158 | FORMAT_BYTES(sum)); | |
170c9823 LP |
5159 | |
5160 | arg_size = sum; | |
5161 | return 0; | |
5162 | } | |
5163 | ||
e594a3b1 | 5164 | static int run(int argc, char *argv[]) { |
252d6267 LP |
5165 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
5166 | _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL; | |
5167 | _cleanup_(umount_and_rmdir_and_freep) char *mounted_dir = NULL; | |
e594a3b1 LP |
5168 | _cleanup_(context_freep) Context* context = NULL; |
5169 | _cleanup_free_ char *node = NULL; | |
a26f4a49 | 5170 | _cleanup_close_ int backing_fd = -1; |
252d6267 | 5171 | bool from_scratch, node_is_our_loop = false; |
e594a3b1 LP |
5172 | int r; |
5173 | ||
5174 | log_show_color(true); | |
5175 | log_parse_environment(); | |
5176 | log_open(); | |
5177 | ||
e594a3b1 LP |
5178 | r = parse_argv(argc, argv); |
5179 | if (r <= 0) | |
5180 | return r; | |
5181 | ||
5182 | r = parse_proc_cmdline_factory_reset(); | |
5183 | if (r < 0) | |
5184 | return r; | |
5185 | ||
5186 | r = parse_efi_variable_factory_reset(); | |
5187 | if (r < 0) | |
5188 | return r; | |
5189 | ||
30f19400 LP |
5190 | #if HAVE_LIBCRYPTSETUP |
5191 | cryptsetup_enable_logging(NULL); | |
5192 | #endif | |
5193 | ||
252d6267 LP |
5194 | if (arg_image) { |
5195 | assert(!arg_root); | |
5196 | ||
5197 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
5198 | * systems */ | |
5199 | r = mount_image_privately_interactively( | |
5200 | arg_image, | |
5201 | DISSECT_IMAGE_MOUNT_READ_ONLY | | |
5202 | (arg_node ? DISSECT_IMAGE_DEVICE_READ_ONLY : 0) | /* If a different node to make changes to is specified let's open the device in read-only mode) */ | |
5203 | DISSECT_IMAGE_GPT_ONLY | | |
5204 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
5205 | DISSECT_IMAGE_USR_NO_ROOT | | |
5206 | DISSECT_IMAGE_REQUIRE_ROOT, | |
5207 | &mounted_dir, | |
5208 | &loop_device, | |
5209 | &decrypted_image); | |
5210 | if (r < 0) | |
5211 | return r; | |
5212 | ||
5213 | arg_root = strdup(mounted_dir); | |
5214 | if (!arg_root) | |
5215 | return log_oom(); | |
5216 | ||
5217 | if (!arg_node) { | |
5218 | arg_node = strdup(loop_device->node); | |
5219 | if (!arg_node) | |
5220 | return log_oom(); | |
5221 | ||
3d62af7d | 5222 | /* Remember that the device we are about to manipulate is actually the one we |
252d6267 LP |
5223 | * allocated here, and thus to increase its backing file we know what to do */ |
5224 | node_is_our_loop = true; | |
5225 | } | |
5226 | } | |
5227 | ||
e594a3b1 LP |
5228 | context = context_new(arg_seed); |
5229 | if (!context) | |
5230 | return log_oom(); | |
5231 | ||
224c853f RP |
5232 | strv_uniq(arg_definitions); |
5233 | ||
e594a3b1 LP |
5234 | r = context_read_definitions(context, arg_definitions, arg_root); |
5235 | if (r < 0) | |
5236 | return r; | |
5237 | ||
a26f4a49 | 5238 | if (context->n_partitions <= 0 && arg_empty == EMPTY_REFUSE) { |
e2d65cd2 | 5239 | log_info("Didn't find any partition definition files, nothing to do."); |
0ae5ffe0 | 5240 | return 0; |
e2d65cd2 | 5241 | } |
0ae5ffe0 | 5242 | |
a26f4a49 | 5243 | r = find_root(&node, &backing_fd); |
0ae5ffe0 YW |
5244 | if (r < 0) |
5245 | return r; | |
5246 | ||
a26f4a49 | 5247 | if (arg_size != UINT64_MAX) { |
252d6267 LP |
5248 | r = resize_backing_fd( |
5249 | node, | |
5250 | &backing_fd, | |
5251 | node_is_our_loop ? arg_image : NULL, | |
5252 | node_is_our_loop ? loop_device : NULL); | |
a26f4a49 LP |
5253 | if (r < 0) |
5254 | return r; | |
5255 | } | |
5256 | ||
5257 | r = context_load_partition_table(context, node, &backing_fd); | |
e594a3b1 LP |
5258 | if (r == -EHWPOISON) |
5259 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
5260 | * really an error when called at boot. */ | |
5261 | if (r < 0) | |
5262 | return r; | |
5263 | from_scratch = r > 0; /* Starting from scratch */ | |
5264 | ||
5265 | if (arg_can_factory_reset) { | |
5266 | r = context_can_factory_reset(context); | |
5267 | if (r < 0) | |
5268 | return r; | |
5269 | if (r == 0) | |
5270 | return EXIT_FAILURE; | |
5271 | ||
5272 | return 0; | |
5273 | } | |
5274 | ||
5275 | r = context_factory_reset(context, from_scratch); | |
5276 | if (r < 0) | |
5277 | return r; | |
5278 | if (r > 0) { | |
5279 | /* We actually did a factory reset! */ | |
5280 | r = remove_efi_variable_factory_reset(); | |
5281 | if (r < 0) | |
5282 | return r; | |
5283 | ||
5284 | /* Reload the reduced partition table */ | |
5285 | context_unload_partition_table(context); | |
a26f4a49 | 5286 | r = context_load_partition_table(context, node, &backing_fd); |
e594a3b1 LP |
5287 | if (r < 0) |
5288 | return r; | |
5289 | } | |
5290 | ||
5291 | #if 0 | |
5292 | (void) context_dump_partitions(context, node); | |
5293 | putchar('\n'); | |
5294 | #endif | |
5295 | ||
5296 | r = context_read_seed(context, arg_root); | |
5297 | if (r < 0) | |
5298 | return r; | |
5299 | ||
757bc2e4 | 5300 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
5301 | r = context_open_copy_block_paths( |
5302 | context, | |
5303 | arg_root, | |
7802194a | 5304 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
5305 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
5306 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
5307 | if (r < 0) |
5308 | return r; | |
5309 | ||
170c9823 LP |
5310 | if (arg_size_auto) { |
5311 | r = determine_auto_size(context); | |
5312 | if (r < 0) | |
5313 | return r; | |
5314 | ||
5315 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
5316 | context_unload_partition_table(context); | |
5317 | ||
ac33e147 | 5318 | assert(arg_size != UINT64_MAX); |
252d6267 LP |
5319 | r = resize_backing_fd( |
5320 | node, | |
5321 | &backing_fd, | |
5322 | node_is_our_loop ? arg_image : NULL, | |
5323 | node_is_our_loop ? loop_device : NULL); | |
170c9823 LP |
5324 | if (r < 0) |
5325 | return r; | |
5326 | ||
5327 | r = context_load_partition_table(context, node, &backing_fd); | |
5328 | if (r < 0) | |
5329 | return r; | |
5330 | } | |
5331 | ||
e594a3b1 LP |
5332 | /* First try to fit new partitions in, dropping by priority until it fits */ |
5333 | for (;;) { | |
14a4c4ed LP |
5334 | uint64_t largest_free_area; |
5335 | ||
5336 | if (context_allocate_partitions(context, &largest_free_area)) | |
e594a3b1 LP |
5337 | break; /* Success! */ |
5338 | ||
d17db7b2 LP |
5339 | if (!context_drop_one_priority(context)) { |
5340 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), | |
14a4c4ed | 5341 | "Can't fit requested partitions into available free space (%s), refusing.", |
2b59bf51 | 5342 | FORMAT_BYTES(largest_free_area)); |
d17db7b2 LP |
5343 | determine_auto_size(context); |
5344 | return r; | |
5345 | } | |
e594a3b1 LP |
5346 | } |
5347 | ||
5348 | /* Now assign free space according to the weight logic */ | |
5349 | r = context_grow_partitions(context); | |
5350 | if (r < 0) | |
5351 | return r; | |
5352 | ||
0b7f574f | 5353 | /* Now calculate where each new partition gets placed */ |
e594a3b1 LP |
5354 | context_place_partitions(context); |
5355 | ||
5356 | /* Make sure each partition has a unique UUID and unique label */ | |
5357 | r = context_acquire_partition_uuids_and_labels(context); | |
5358 | if (r < 0) | |
5359 | return r; | |
5360 | ||
b5b7879a | 5361 | (void) context_dump(context, node, /*late=*/ false); |
a26d463d | 5362 | |
e594a3b1 LP |
5363 | r = context_write_partition_table(context, node, from_scratch); |
5364 | if (r < 0) | |
5365 | return r; | |
5366 | ||
b5b7879a DDM |
5367 | (void) context_dump(context, node, /*late=*/ true); |
5368 | ||
e594a3b1 LP |
5369 | return 0; |
5370 | } | |
5371 | ||
5372 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |