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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> | |
9 | #include <libfdisk.h> | |
10 | #include <linux/fs.h> | |
11 | #include <linux/loop.h> | |
12 | #include <sys/file.h> | |
13 | #include <sys/ioctl.h> | |
14 | #include <sys/stat.h> | |
15 | ||
16 | #include <openssl/hmac.h> | |
17 | #include <openssl/sha.h> | |
18 | ||
19 | #include "sd-id128.h" | |
20 | ||
21 | #include "alloc-util.h" | |
22 | #include "blkid-util.h" | |
23 | #include "blockdev-util.h" | |
24 | #include "btrfs-util.h" | |
25 | #include "conf-files.h" | |
26 | #include "conf-parser.h" | |
1e2f3230 | 27 | #include "cryptsetup-util.h" |
e594a3b1 | 28 | #include "def.h" |
5c08da58 | 29 | #include "dirent-util.h" |
e594a3b1 LP |
30 | #include "efivars.h" |
31 | #include "errno-util.h" | |
32 | #include "fd-util.h" | |
b9df3536 | 33 | #include "fileio.h" |
e594a3b1 LP |
34 | #include "format-table.h" |
35 | #include "format-util.h" | |
36 | #include "fs-util.h" | |
37 | #include "gpt.h" | |
889914ef | 38 | #include "hexdecoct.h" |
e594a3b1 | 39 | #include "id128-util.h" |
a015fbe7 | 40 | #include "json.h" |
e594a3b1 LP |
41 | #include "list.h" |
42 | #include "locale-util.h" | |
53171c04 | 43 | #include "loop-util.h" |
e594a3b1 | 44 | #include "main-func.h" |
8a794850 | 45 | #include "mkdir.h" |
53171c04 | 46 | #include "mkfs-util.h" |
8a794850 | 47 | #include "mount-util.h" |
5c08da58 | 48 | #include "mountpoint-util.h" |
614b022c | 49 | #include "parse-argument.h" |
599c7c54 | 50 | #include "parse-util.h" |
e594a3b1 LP |
51 | #include "path-util.h" |
52 | #include "pretty-print.h" | |
53 | #include "proc-cmdline.h" | |
8a794850 | 54 | #include "process-util.h" |
b9df3536 | 55 | #include "random-util.h" |
170c9823 | 56 | #include "resize-fs.h" |
e594a3b1 | 57 | #include "sort-util.h" |
e031166e | 58 | #include "specifier.h" |
e594a3b1 LP |
59 | #include "stat-util.h" |
60 | #include "stdio-util.h" | |
889914ef | 61 | #include "string-table.h" |
e594a3b1 LP |
62 | #include "string-util.h" |
63 | #include "strv.h" | |
64 | #include "terminal-util.h" | |
889914ef | 65 | #include "tpm2-util.h" |
8a794850 | 66 | #include "user-util.h" |
e594a3b1 LP |
67 | #include "utf8.h" |
68 | ||
fb08381c LP |
69 | /* If not configured otherwise use a minimal partition size of 10M */ |
70 | #define DEFAULT_MIN_SIZE (10*1024*1024) | |
71 | ||
72 | /* Hard lower limit for new partition sizes */ | |
73 | #define HARD_MIN_SIZE 4096 | |
74 | ||
69e3234d | 75 | /* libfdisk takes off slightly more than 1M of the disk size when creating a GPT disk label */ |
170c9823 LP |
76 | #define GPT_METADATA_SIZE (1044*1024) |
77 | ||
78 | /* LUKS2 takes off 16M of the partition size with its metadata by default */ | |
79 | #define LUKS2_METADATA_SIZE (16*1024*1024) | |
80 | ||
e594a3b1 LP |
81 | /* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks |
82 | * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B | |
83 | * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll | |
84 | * waste 3K per partition, which is probably fine. */ | |
85 | ||
86 | static enum { | |
87 | EMPTY_REFUSE, /* refuse empty disks, never create a partition table */ | |
88 | EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */ | |
89 | EMPTY_REQUIRE, /* require an empty disk, create a partition table */ | |
90 | EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */ | |
a26f4a49 | 91 | EMPTY_CREATE, /* create disk as loopback file, create a partition table always */ |
e594a3b1 LP |
92 | } arg_empty = EMPTY_REFUSE; |
93 | ||
94 | static bool arg_dry_run = true; | |
95 | static const char *arg_node = NULL; | |
96 | static char *arg_root = NULL; | |
252d6267 | 97 | static char *arg_image = NULL; |
e594a3b1 LP |
98 | static char *arg_definitions = NULL; |
99 | static bool arg_discard = true; | |
100 | static bool arg_can_factory_reset = false; | |
101 | static int arg_factory_reset = -1; | |
102 | static sd_id128_t arg_seed = SD_ID128_NULL; | |
103 | static bool arg_randomize = false; | |
104 | static int arg_pretty = -1; | |
a26f4a49 | 105 | static uint64_t arg_size = UINT64_MAX; |
170c9823 | 106 | static bool arg_size_auto = false; |
6a01ea4a | 107 | static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; |
896e678b LP |
108 | static PagerFlags arg_pager_flags = 0; |
109 | static bool arg_legend = true; | |
b9df3536 LP |
110 | static void *arg_key = NULL; |
111 | static size_t arg_key_size = 0; | |
889914ef LP |
112 | static char *arg_tpm2_device = NULL; |
113 | static uint32_t arg_tpm2_pcr_mask = UINT32_MAX; | |
e594a3b1 LP |
114 | |
115 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 116 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
e594a3b1 | 117 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, freep); |
b9df3536 | 118 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
889914ef | 119 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
e594a3b1 LP |
120 | |
121 | typedef struct Partition Partition; | |
122 | typedef struct FreeArea FreeArea; | |
123 | typedef struct Context Context; | |
124 | ||
889914ef LP |
125 | typedef enum EncryptMode { |
126 | ENCRYPT_OFF, | |
127 | ENCRYPT_KEY_FILE, | |
128 | ENCRYPT_TPM2, | |
129 | ENCRYPT_KEY_FILE_TPM2, | |
130 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 131 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
132 | } EncryptMode; |
133 | ||
e594a3b1 LP |
134 | struct Partition { |
135 | char *definition_path; | |
136 | ||
137 | sd_id128_t type_uuid; | |
138 | sd_id128_t current_uuid, new_uuid; | |
139 | char *current_label, *new_label; | |
140 | ||
141 | bool dropped; | |
142 | bool factory_reset; | |
143 | int32_t priority; | |
144 | ||
145 | uint32_t weight, padding_weight; | |
146 | ||
147 | uint64_t current_size, new_size; | |
148 | uint64_t size_min, size_max; | |
149 | ||
150 | uint64_t current_padding, new_padding; | |
151 | uint64_t padding_min, padding_max; | |
152 | ||
153 | uint64_t partno; | |
154 | uint64_t offset; | |
155 | ||
156 | struct fdisk_partition *current_partition; | |
157 | struct fdisk_partition *new_partition; | |
158 | FreeArea *padding_area; | |
159 | FreeArea *allocated_to_area; | |
160 | ||
757bc2e4 | 161 | char *copy_blocks_path; |
5c08da58 | 162 | bool copy_blocks_auto; |
757bc2e4 LP |
163 | int copy_blocks_fd; |
164 | uint64_t copy_blocks_size; | |
165 | ||
53171c04 | 166 | char *format; |
8a794850 | 167 | char **copy_files; |
d83d8048 | 168 | char **make_directories; |
889914ef | 169 | EncryptMode encrypt; |
53171c04 | 170 | |
e73309c5 | 171 | uint64_t gpt_flags; |
ff0771bf | 172 | int no_auto; |
e73309c5 | 173 | int read_only; |
1c41c1dc | 174 | int growfs; |
e73309c5 | 175 | |
e594a3b1 LP |
176 | LIST_FIELDS(Partition, partitions); |
177 | }; | |
178 | ||
179 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
180 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
181 | ||
182 | struct FreeArea { | |
183 | Partition *after; | |
184 | uint64_t size; | |
185 | uint64_t allocated; | |
186 | }; | |
187 | ||
188 | struct Context { | |
189 | LIST_HEAD(Partition, partitions); | |
190 | size_t n_partitions; | |
191 | ||
192 | FreeArea **free_areas; | |
319a4f4b | 193 | size_t n_free_areas; |
e594a3b1 LP |
194 | |
195 | uint64_t start, end, total; | |
196 | ||
197 | struct fdisk_context *fdisk_context; | |
198 | ||
199 | sd_id128_t seed; | |
200 | }; | |
201 | ||
889914ef LP |
202 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
203 | [ENCRYPT_OFF] = "off", | |
204 | [ENCRYPT_KEY_FILE] = "key-file", | |
205 | [ENCRYPT_TPM2] = "tpm2", | |
206 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
207 | }; | |
208 | ||
209 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); | |
210 | ||
e594a3b1 LP |
211 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
212 | return (v / p) * p; | |
213 | } | |
214 | ||
215 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
216 | ||
217 | v = DIV_ROUND_UP(v, p); | |
218 | ||
219 | if (v > UINT64_MAX / p) | |
220 | return UINT64_MAX; /* overflow */ | |
221 | ||
222 | return v * p; | |
223 | } | |
224 | ||
225 | static Partition *partition_new(void) { | |
226 | Partition *p; | |
227 | ||
228 | p = new(Partition, 1); | |
229 | if (!p) | |
230 | return NULL; | |
231 | ||
232 | *p = (Partition) { | |
233 | .weight = 1000, | |
234 | .padding_weight = 0, | |
235 | .current_size = UINT64_MAX, | |
236 | .new_size = UINT64_MAX, | |
237 | .size_min = UINT64_MAX, | |
238 | .size_max = UINT64_MAX, | |
239 | .current_padding = UINT64_MAX, | |
240 | .new_padding = UINT64_MAX, | |
241 | .padding_min = UINT64_MAX, | |
242 | .padding_max = UINT64_MAX, | |
243 | .partno = UINT64_MAX, | |
244 | .offset = UINT64_MAX, | |
757bc2e4 LP |
245 | .copy_blocks_fd = -1, |
246 | .copy_blocks_size = UINT64_MAX, | |
ff0771bf | 247 | .no_auto = -1, |
e73309c5 | 248 | .read_only = -1, |
1c41c1dc | 249 | .growfs = -1, |
e594a3b1 LP |
250 | }; |
251 | ||
252 | return p; | |
253 | } | |
254 | ||
255 | static Partition* partition_free(Partition *p) { | |
256 | if (!p) | |
257 | return NULL; | |
258 | ||
259 | free(p->current_label); | |
260 | free(p->new_label); | |
261 | free(p->definition_path); | |
262 | ||
263 | if (p->current_partition) | |
264 | fdisk_unref_partition(p->current_partition); | |
265 | if (p->new_partition) | |
266 | fdisk_unref_partition(p->new_partition); | |
267 | ||
757bc2e4 LP |
268 | free(p->copy_blocks_path); |
269 | safe_close(p->copy_blocks_fd); | |
270 | ||
53171c04 | 271 | free(p->format); |
8a794850 | 272 | strv_free(p->copy_files); |
d83d8048 | 273 | strv_free(p->make_directories); |
53171c04 | 274 | |
e594a3b1 LP |
275 | return mfree(p); |
276 | } | |
277 | ||
278 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { | |
279 | if (!p) | |
280 | return NULL; | |
281 | ||
282 | LIST_REMOVE(partitions, context->partitions, p); | |
283 | ||
284 | assert(context->n_partitions > 0); | |
285 | context->n_partitions--; | |
286 | ||
287 | return partition_free(p); | |
288 | } | |
289 | ||
290 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
291 | ||
292 | static Context *context_new(sd_id128_t seed) { | |
293 | Context *context; | |
294 | ||
295 | context = new(Context, 1); | |
296 | if (!context) | |
297 | return NULL; | |
298 | ||
299 | *context = (Context) { | |
300 | .start = UINT64_MAX, | |
301 | .end = UINT64_MAX, | |
302 | .total = UINT64_MAX, | |
303 | .seed = seed, | |
304 | }; | |
305 | ||
306 | return context; | |
307 | } | |
308 | ||
309 | static void context_free_free_areas(Context *context) { | |
310 | assert(context); | |
311 | ||
312 | for (size_t i = 0; i < context->n_free_areas; i++) | |
313 | free(context->free_areas[i]); | |
314 | ||
315 | context->free_areas = mfree(context->free_areas); | |
316 | context->n_free_areas = 0; | |
e594a3b1 LP |
317 | } |
318 | ||
319 | static Context *context_free(Context *context) { | |
320 | if (!context) | |
321 | return NULL; | |
322 | ||
323 | while (context->partitions) | |
324 | partition_unlink_and_free(context, context->partitions); | |
325 | assert(context->n_partitions == 0); | |
326 | ||
327 | context_free_free_areas(context); | |
328 | ||
329 | if (context->fdisk_context) | |
330 | fdisk_unref_context(context->fdisk_context); | |
331 | ||
332 | return mfree(context); | |
333 | } | |
334 | ||
335 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
336 | ||
337 | static int context_add_free_area( | |
338 | Context *context, | |
339 | uint64_t size, | |
340 | Partition *after) { | |
341 | ||
342 | FreeArea *a; | |
343 | ||
344 | assert(context); | |
345 | assert(!after || !after->padding_area); | |
346 | ||
319a4f4b | 347 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
348 | return -ENOMEM; |
349 | ||
350 | a = new(FreeArea, 1); | |
351 | if (!a) | |
352 | return -ENOMEM; | |
353 | ||
354 | *a = (FreeArea) { | |
355 | .size = size, | |
356 | .after = after, | |
357 | }; | |
358 | ||
359 | context->free_areas[context->n_free_areas++] = a; | |
360 | ||
361 | if (after) | |
362 | after->padding_area = a; | |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
367 | static bool context_drop_one_priority(Context *context) { | |
368 | int32_t priority = 0; | |
369 | Partition *p; | |
370 | bool exists = false; | |
371 | ||
372 | LIST_FOREACH(partitions, p, context->partitions) { | |
373 | if (p->dropped) | |
374 | continue; | |
375 | if (p->priority < priority) | |
376 | continue; | |
377 | if (p->priority == priority) { | |
378 | exists = exists || PARTITION_EXISTS(p); | |
379 | continue; | |
380 | } | |
381 | ||
382 | priority = p->priority; | |
383 | exists = PARTITION_EXISTS(p); | |
384 | } | |
385 | ||
386 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
387 | * least one existing priority */ | |
388 | if (priority <= 0 || exists) | |
389 | return false; | |
390 | ||
391 | LIST_FOREACH(partitions, p, context->partitions) { | |
392 | if (p->priority < priority) | |
393 | continue; | |
394 | ||
395 | if (p->dropped) | |
396 | continue; | |
397 | ||
398 | p->dropped = true; | |
399 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", p->definition_path, p->priority); | |
400 | } | |
401 | ||
402 | return true; | |
403 | } | |
404 | ||
405 | static uint64_t partition_min_size(const Partition *p) { | |
406 | uint64_t sz; | |
407 | ||
408 | /* Calculate the disk space we really need at minimum for this partition. If the partition already | |
409 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
410 | * than 4K. |
411 | * | |
412 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
413 | |
414 | if (PARTITION_IS_FOREIGN(p)) { | |
415 | /* Don't allow changing size of partitions not managed by us */ | |
416 | assert(p->current_size != UINT64_MAX); | |
417 | return p->current_size; | |
418 | } | |
419 | ||
fb08381c | 420 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 421 | |
170c9823 LP |
422 | if (!PARTITION_EXISTS(p)) { |
423 | uint64_t d = 0; | |
424 | ||
889914ef | 425 | if (p->encrypt != ENCRYPT_OFF) |
170c9823 LP |
426 | d += round_up_size(LUKS2_METADATA_SIZE, 4096); |
427 | ||
428 | if (p->copy_blocks_size != UINT64_MAX) | |
429 | d += round_up_size(p->copy_blocks_size, 4096); | |
889914ef | 430 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
431 | uint64_t f; |
432 | ||
433 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
434 | f = p->format ? minimal_size_by_fs_name(p->format) : UINT64_MAX; | |
435 | d += f == UINT64_MAX ? 4096 : f; | |
436 | } | |
437 | ||
438 | if (d > sz) | |
439 | sz = d; | |
440 | } | |
757bc2e4 LP |
441 | |
442 | return MAX(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, sz); | |
e594a3b1 LP |
443 | } |
444 | ||
445 | static uint64_t partition_max_size(const Partition *p) { | |
446 | /* Calculate how large the partition may become at max. This is generally the configured maximum | |
447 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
448 | * since we never want to shrink partitions. */ | |
449 | ||
450 | if (PARTITION_IS_FOREIGN(p)) { | |
451 | /* Don't allow changing size of partitions not managed by us */ | |
452 | assert(p->current_size != UINT64_MAX); | |
453 | return p->current_size; | |
454 | } | |
455 | ||
456 | if (p->current_size != UINT64_MAX) | |
457 | return MAX(p->current_size, p->size_max); | |
458 | ||
459 | return p->size_max; | |
460 | } | |
461 | ||
462 | static uint64_t partition_min_size_with_padding(const Partition *p) { | |
463 | uint64_t sz; | |
464 | ||
465 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
466 | * takes user configured padding into account as well as any additional whitespace needed to align | |
467 | * the next partition to 4K again. */ | |
468 | ||
469 | sz = partition_min_size(p); | |
470 | ||
471 | if (p->padding_min != UINT64_MAX) | |
472 | sz += p->padding_min; | |
473 | ||
474 | if (PARTITION_EXISTS(p)) { | |
475 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
476 | assert(p->offset != UINT64_MAX); | |
477 | return round_up_size(p->offset + sz, 4096) - p->offset; | |
478 | } | |
479 | ||
480 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
481 | return round_up_size(sz, 4096); | |
482 | } | |
483 | ||
484 | static uint64_t free_area_available(const FreeArea *a) { | |
485 | assert(a); | |
486 | ||
487 | /* Determines how much of this free area is not allocated yet */ | |
488 | ||
489 | assert(a->size >= a->allocated); | |
490 | return a->size - a->allocated; | |
491 | } | |
492 | ||
493 | static uint64_t free_area_available_for_new_partitions(const FreeArea *a) { | |
494 | uint64_t avail; | |
495 | ||
496 | /* Similar to free_area_available(), but takes into account that the required size and padding of the | |
162392b7 | 497 | * preceding partition is honoured. */ |
e594a3b1 LP |
498 | |
499 | avail = free_area_available(a); | |
500 | if (a->after) { | |
501 | uint64_t need, space; | |
502 | ||
503 | need = partition_min_size_with_padding(a->after); | |
504 | ||
505 | assert(a->after->offset != UINT64_MAX); | |
506 | assert(a->after->current_size != UINT64_MAX); | |
507 | ||
508 | space = round_up_size(a->after->offset + a->after->current_size, 4096) - a->after->offset + avail; | |
509 | if (need >= space) | |
510 | return 0; | |
511 | ||
512 | return space - need; | |
513 | } | |
514 | ||
515 | return avail; | |
516 | } | |
517 | ||
518 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b) { | |
519 | return CMP(free_area_available_for_new_partitions(*a), | |
520 | free_area_available_for_new_partitions(*b)); | |
521 | } | |
522 | ||
523 | static uint64_t charge_size(uint64_t total, uint64_t amount) { | |
524 | uint64_t rounded; | |
525 | ||
526 | assert(amount <= total); | |
527 | ||
528 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ | |
529 | rounded = round_up_size(amount, 4096); | |
530 | if (rounded >= total) | |
531 | return 0; | |
532 | ||
533 | return total - rounded; | |
534 | } | |
535 | ||
536 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
537 | assert(amount <= total); | |
538 | return total - amount; | |
539 | } | |
540 | ||
541 | static bool context_allocate_partitions(Context *context) { | |
542 | Partition *p; | |
543 | ||
544 | assert(context); | |
545 | ||
546 | /* A simple first-fit algorithm, assuming the array of free areas is sorted by size in decreasing | |
547 | * order. */ | |
548 | ||
549 | LIST_FOREACH(partitions, p, context->partitions) { | |
550 | bool fits = false; | |
551 | uint64_t required; | |
552 | FreeArea *a = NULL; | |
553 | ||
554 | /* Skip partitions we already dropped or that already exist */ | |
555 | if (p->dropped || PARTITION_EXISTS(p)) | |
556 | continue; | |
557 | ||
558 | /* Sort by size */ | |
559 | typesafe_qsort(context->free_areas, context->n_free_areas, free_area_compare); | |
560 | ||
561 | /* How much do we need to fit? */ | |
562 | required = partition_min_size_with_padding(p); | |
563 | assert(required % 4096 == 0); | |
564 | ||
565 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
566 | a = context->free_areas[i]; | |
567 | ||
568 | if (free_area_available_for_new_partitions(a) >= required) { | |
569 | fits = true; | |
570 | break; | |
571 | } | |
572 | } | |
573 | ||
574 | if (!fits) | |
575 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
576 | ||
577 | /* Assign the partition to this free area */ | |
578 | p->allocated_to_area = a; | |
579 | ||
580 | /* Budget the minimal partition size */ | |
581 | a->allocated += required; | |
582 | } | |
583 | ||
584 | return true; | |
585 | } | |
586 | ||
587 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
588 | uint64_t weight_sum = 0; | |
589 | Partition *p; | |
590 | ||
591 | assert(context); | |
592 | assert(a); | |
593 | assert(ret); | |
594 | ||
595 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
596 | ||
597 | LIST_FOREACH(partitions, p, context->partitions) { | |
598 | if (p->padding_area != a && p->allocated_to_area != a) | |
599 | continue; | |
600 | ||
601 | if (p->weight > UINT64_MAX - weight_sum) | |
602 | goto overflow_sum; | |
603 | weight_sum += p->weight; | |
604 | ||
605 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
606 | goto overflow_sum; | |
607 | weight_sum += p->padding_weight; | |
608 | } | |
609 | ||
610 | *ret = weight_sum; | |
611 | return 0; | |
612 | ||
613 | overflow_sum: | |
614 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64bit range, refusing."); | |
615 | } | |
616 | ||
617 | static int scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum, uint64_t *ret) { | |
618 | assert(weight_sum >= weight); | |
619 | assert(ret); | |
620 | ||
621 | if (weight == 0) { | |
622 | *ret = 0; | |
623 | return 0; | |
624 | } | |
625 | ||
626 | if (value > UINT64_MAX / weight) | |
627 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Scaling by weight of partition exceeds unsigned 64bit range, refusing."); | |
628 | ||
629 | *ret = value * weight / weight_sum; | |
630 | return 0; | |
631 | } | |
632 | ||
633 | typedef enum GrowPartitionPhase { | |
634 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ | |
635 | PHASE_OVERCHARGE, | |
636 | ||
637 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
638 | PHASE_UNDERCHARGE, | |
639 | ||
640 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
641 | PHASE_DISTRIBUTE, | |
642 | } GrowPartitionPhase; | |
643 | ||
644 | static int context_grow_partitions_phase( | |
645 | Context *context, | |
646 | FreeArea *a, | |
647 | GrowPartitionPhase phase, | |
648 | uint64_t *span, | |
649 | uint64_t *weight_sum) { | |
650 | ||
651 | Partition *p; | |
652 | int r; | |
653 | ||
654 | assert(context); | |
655 | assert(a); | |
656 | ||
657 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
658 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
659 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
660 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
661 | LIST_FOREACH(partitions, p, context->partitions) { | |
662 | ||
663 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 664 | * preceding it, or allocated into it */ |
e594a3b1 LP |
665 | if (p->allocated_to_area != a && p->padding_area != a) |
666 | continue; | |
667 | ||
668 | if (p->new_size == UINT64_MAX) { | |
669 | bool charge = false, try_again = false; | |
670 | uint64_t share, rsz, xsz; | |
671 | ||
672 | /* Calculate how much this space this partition needs if everyone would get | |
673 | * the weight based share */ | |
674 | r = scale_by_weight(*span, p->weight, *weight_sum, &share); | |
675 | if (r < 0) | |
676 | return r; | |
677 | ||
678 | rsz = partition_min_size(p); | |
679 | xsz = partition_max_size(p); | |
680 | ||
681 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
682 | /* This partition needs more than its calculated share. Let's assign | |
683 | * it that, and take this partition out of all calculations and start | |
684 | * again. */ | |
685 | ||
686 | p->new_size = rsz; | |
687 | charge = try_again = true; | |
688 | ||
689 | } else if (phase == PHASE_UNDERCHARGE && xsz != UINT64_MAX && xsz < share) { | |
690 | /* This partition accepts less than its calculated | |
691 | * share. Let's assign it that, and take this partition out | |
692 | * of all calculations and start again. */ | |
693 | ||
694 | p->new_size = xsz; | |
695 | charge = try_again = true; | |
696 | ||
697 | } else if (phase == PHASE_DISTRIBUTE) { | |
698 | /* This partition can accept its calculated share. Let's | |
699 | * assign it. There's no need to restart things here since | |
700 | * assigning this shouldn't impact the shares of the other | |
701 | * partitions. */ | |
702 | ||
703 | if (PARTITION_IS_FOREIGN(p)) | |
704 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
705 | p->new_size = p->current_size; | |
706 | else | |
707 | p->new_size = MAX(round_down_size(share, 4096), rsz); | |
708 | ||
709 | charge = true; | |
710 | } | |
711 | ||
712 | if (charge) { | |
713 | *span = charge_size(*span, p->new_size); | |
714 | *weight_sum = charge_weight(*weight_sum, p->weight); | |
715 | } | |
716 | ||
717 | if (try_again) | |
718 | return 0; /* try again */ | |
719 | } | |
720 | ||
721 | if (p->new_padding == UINT64_MAX) { | |
722 | bool charge = false, try_again = false; | |
723 | uint64_t share; | |
724 | ||
725 | r = scale_by_weight(*span, p->padding_weight, *weight_sum, &share); | |
726 | if (r < 0) | |
727 | return r; | |
728 | ||
729 | if (phase == PHASE_OVERCHARGE && p->padding_min != UINT64_MAX && p->padding_min > share) { | |
730 | p->new_padding = p->padding_min; | |
731 | charge = try_again = true; | |
732 | } else if (phase == PHASE_UNDERCHARGE && p->padding_max != UINT64_MAX && p->padding_max < share) { | |
733 | p->new_padding = p->padding_max; | |
734 | charge = try_again = true; | |
735 | } else if (phase == PHASE_DISTRIBUTE) { | |
736 | ||
737 | p->new_padding = round_down_size(share, 4096); | |
738 | if (p->padding_min != UINT64_MAX && p->new_padding < p->padding_min) | |
739 | p->new_padding = p->padding_min; | |
740 | ||
741 | charge = true; | |
742 | } | |
743 | ||
744 | if (charge) { | |
745 | *span = charge_size(*span, p->new_padding); | |
746 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); | |
747 | } | |
748 | ||
749 | if (try_again) | |
750 | return 0; /* try again */ | |
751 | } | |
752 | } | |
753 | ||
754 | return 1; /* done */ | |
755 | } | |
756 | ||
757 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { | |
758 | uint64_t weight_sum = 0, span; | |
759 | int r; | |
760 | ||
761 | assert(context); | |
762 | assert(a); | |
763 | ||
764 | r = context_sum_weights(context, a, &weight_sum); | |
765 | if (r < 0) | |
766 | return r; | |
767 | ||
768 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
769 | span = a->size; | |
770 | if (a->after) { | |
771 | assert(a->after->offset != UINT64_MAX); | |
772 | assert(a->after->current_size != UINT64_MAX); | |
773 | ||
774 | span += round_up_size(a->after->offset + a->after->current_size, 4096) - a->after->offset; | |
775 | } | |
776 | ||
777 | GrowPartitionPhase phase = PHASE_OVERCHARGE; | |
778 | for (;;) { | |
779 | r = context_grow_partitions_phase(context, a, phase, &span, &weight_sum); | |
780 | if (r < 0) | |
781 | return r; | |
782 | if (r == 0) /* not done yet, re-run this phase */ | |
783 | continue; | |
784 | ||
785 | if (phase == PHASE_OVERCHARGE) | |
786 | phase = PHASE_UNDERCHARGE; | |
787 | else if (phase == PHASE_UNDERCHARGE) | |
788 | phase = PHASE_DISTRIBUTE; | |
789 | else if (phase == PHASE_DISTRIBUTE) | |
790 | break; | |
791 | } | |
792 | ||
162392b7 | 793 | /* We still have space left over? Donate to preceding partition if we have one */ |
e594a3b1 LP |
794 | if (span > 0 && a->after && !PARTITION_IS_FOREIGN(a->after)) { |
795 | uint64_t m, xsz; | |
796 | ||
797 | assert(a->after->new_size != UINT64_MAX); | |
798 | m = a->after->new_size + span; | |
799 | ||
800 | xsz = partition_max_size(a->after); | |
801 | if (xsz != UINT64_MAX && m > xsz) | |
802 | m = xsz; | |
803 | ||
804 | span = charge_size(span, m - a->after->new_size); | |
805 | a->after->new_size = m; | |
806 | } | |
807 | ||
162392b7 | 808 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 LP |
809 | * size limit), then let's donate it to whoever wants it. */ |
810 | if (span > 0) { | |
811 | Partition *p; | |
812 | ||
813 | LIST_FOREACH(partitions, p, context->partitions) { | |
814 | uint64_t m, xsz; | |
815 | ||
816 | if (p->allocated_to_area != a) | |
817 | continue; | |
818 | ||
819 | if (PARTITION_IS_FOREIGN(p)) | |
820 | continue; | |
821 | ||
822 | assert(p->new_size != UINT64_MAX); | |
823 | m = p->new_size + span; | |
824 | ||
db144226 | 825 | xsz = partition_max_size(p); |
e594a3b1 LP |
826 | if (xsz != UINT64_MAX && m > xsz) |
827 | m = xsz; | |
828 | ||
829 | span = charge_size(span, m - p->new_size); | |
830 | p->new_size = m; | |
831 | ||
832 | if (span == 0) | |
833 | break; | |
834 | } | |
835 | } | |
836 | ||
162392b7 | 837 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
838 | if (span > 0 && a->after) { |
839 | assert(a->after->new_padding != UINT64_MAX); | |
840 | a->after->new_padding += span; | |
841 | } | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
846 | static int context_grow_partitions(Context *context) { | |
847 | Partition *p; | |
848 | int r; | |
849 | ||
850 | assert(context); | |
851 | ||
852 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
853 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
854 | if (r < 0) | |
855 | return r; | |
856 | } | |
857 | ||
858 | /* All existing partitions that have no free space after them can't change size */ | |
859 | LIST_FOREACH(partitions, p, context->partitions) { | |
860 | if (p->dropped) | |
861 | continue; | |
862 | ||
863 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
864 | /* The algorithm above must have initialized this already */ | |
865 | assert(p->new_size != UINT64_MAX); | |
866 | continue; | |
867 | } | |
868 | ||
869 | assert(p->new_size == UINT64_MAX); | |
870 | p->new_size = p->current_size; | |
871 | ||
872 | assert(p->new_padding == UINT64_MAX); | |
873 | p->new_padding = p->current_padding; | |
874 | } | |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
879 | static void context_place_partitions(Context *context) { | |
880 | uint64_t partno = 0; | |
881 | Partition *p; | |
882 | ||
883 | assert(context); | |
884 | ||
885 | /* Determine next partition number to assign */ | |
886 | LIST_FOREACH(partitions, p, context->partitions) { | |
887 | if (!PARTITION_EXISTS(p)) | |
888 | continue; | |
889 | ||
890 | assert(p->partno != UINT64_MAX); | |
891 | if (p->partno >= partno) | |
892 | partno = p->partno + 1; | |
893 | } | |
894 | ||
895 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
896 | FreeArea *a = context->free_areas[i]; | |
897 | uint64_t start, left; | |
898 | ||
899 | if (a->after) { | |
900 | assert(a->after->offset != UINT64_MAX); | |
901 | assert(a->after->new_size != UINT64_MAX); | |
902 | assert(a->after->new_padding != UINT64_MAX); | |
903 | ||
904 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
905 | } else | |
906 | start = context->start; | |
907 | ||
908 | start = round_up_size(start, 4096); | |
909 | left = a->size; | |
910 | ||
911 | LIST_FOREACH(partitions, p, context->partitions) { | |
912 | if (p->allocated_to_area != a) | |
913 | continue; | |
914 | ||
915 | p->offset = start; | |
916 | p->partno = partno++; | |
917 | ||
918 | assert(left >= p->new_size); | |
919 | start += p->new_size; | |
920 | left -= p->new_size; | |
921 | ||
922 | assert(left >= p->new_padding); | |
923 | start += p->new_padding; | |
924 | left -= p->new_padding; | |
925 | } | |
926 | } | |
927 | } | |
928 | ||
e594a3b1 LP |
929 | static int config_parse_type( |
930 | const char *unit, | |
931 | const char *filename, | |
932 | unsigned line, | |
933 | const char *section, | |
934 | unsigned section_line, | |
935 | const char *lvalue, | |
936 | int ltype, | |
937 | const char *rvalue, | |
938 | void *data, | |
939 | void *userdata) { | |
940 | ||
941 | sd_id128_t *type_uuid = data; | |
942 | int r; | |
943 | ||
944 | assert(rvalue); | |
945 | assert(type_uuid); | |
946 | ||
947 | r = gpt_partition_type_uuid_from_string(rvalue, type_uuid); | |
948 | if (r < 0) | |
949 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
950 | ||
951 | return 0; | |
952 | } | |
953 | ||
954 | static int config_parse_label( | |
955 | const char *unit, | |
956 | const char *filename, | |
957 | unsigned line, | |
958 | const char *section, | |
959 | unsigned section_line, | |
960 | const char *lvalue, | |
961 | int ltype, | |
962 | const char *rvalue, | |
963 | void *data, | |
964 | void *userdata) { | |
965 | ||
e031166e | 966 | _cleanup_free_ char *resolved = NULL; |
e594a3b1 LP |
967 | char **label = data; |
968 | int r; | |
969 | ||
970 | assert(rvalue); | |
971 | assert(label); | |
972 | ||
be9ce018 LP |
973 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
974 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
975 | ||
b3e22322 | 976 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, NULL, &resolved); |
e031166e | 977 | if (r < 0) { |
e459258f | 978 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
979 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
980 | return 0; | |
981 | } | |
982 | ||
983 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
984 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
985 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
986 | return 0; | |
987 | } | |
988 | ||
22a0a36e LP |
989 | r = gpt_partition_label_valid(resolved); |
990 | if (r < 0) { | |
991 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
992 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
993 | resolved, rvalue); | |
994 | return 0; | |
995 | } | |
996 | if (!r) { | |
e594a3b1 | 997 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
998 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
999 | resolved, rvalue); | |
e594a3b1 LP |
1000 | return 0; |
1001 | } | |
1002 | ||
e031166e | 1003 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1004 | return 0; |
1005 | } | |
1006 | ||
1007 | static int config_parse_weight( | |
1008 | const char *unit, | |
1009 | const char *filename, | |
1010 | unsigned line, | |
1011 | const char *section, | |
1012 | unsigned section_line, | |
1013 | const char *lvalue, | |
1014 | int ltype, | |
1015 | const char *rvalue, | |
1016 | void *data, | |
1017 | void *userdata) { | |
1018 | ||
1019 | uint32_t *priority = data, v; | |
1020 | int r; | |
1021 | ||
1022 | assert(rvalue); | |
1023 | assert(priority); | |
1024 | ||
1025 | r = safe_atou32(rvalue, &v); | |
1026 | if (r < 0) { | |
1027 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1028 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | if (v > 1000U*1000U) { | |
c8f3d767 | 1033 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1034 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | *priority = v; | |
1039 | return 0; | |
1040 | } | |
1041 | ||
1042 | static int config_parse_size4096( | |
1043 | const char *unit, | |
1044 | const char *filename, | |
1045 | unsigned line, | |
1046 | const char *section, | |
1047 | unsigned section_line, | |
1048 | const char *lvalue, | |
1049 | int ltype, | |
1050 | const char *rvalue, | |
1051 | void *data, | |
1052 | void *userdata) { | |
1053 | ||
1054 | uint64_t *sz = data, parsed; | |
1055 | int r; | |
1056 | ||
1057 | assert(rvalue); | |
1058 | assert(data); | |
1059 | ||
1060 | r = parse_size(rvalue, 1024, &parsed); | |
1061 | if (r < 0) | |
c8f3d767 | 1062 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1063 | "Failed to parse size value: %s", rvalue); |
1064 | ||
1065 | if (ltype > 0) | |
1066 | *sz = round_up_size(parsed, 4096); | |
1067 | else if (ltype < 0) | |
1068 | *sz = round_down_size(parsed, 4096); | |
1069 | else | |
1070 | *sz = parsed; | |
1071 | ||
1072 | if (*sz != parsed) | |
1073 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " → %" PRIu64 ", a multiple of 4096.", lvalue, parsed, *sz); | |
1074 | ||
1075 | return 0; | |
1076 | } | |
1077 | ||
53171c04 LP |
1078 | static int config_parse_fstype( |
1079 | const char *unit, | |
1080 | const char *filename, | |
1081 | unsigned line, | |
1082 | const char *section, | |
1083 | unsigned section_line, | |
1084 | const char *lvalue, | |
1085 | int ltype, | |
1086 | const char *rvalue, | |
1087 | void *data, | |
1088 | void *userdata) { | |
1089 | ||
1090 | char **fstype = data; | |
1091 | ||
1092 | assert(rvalue); | |
1093 | assert(data); | |
1094 | ||
1095 | if (!filename_is_valid(rvalue)) | |
1096 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1097 | "File system type is not valid, refusing: %s", rvalue); | |
1098 | ||
1099 | return free_and_strdup_warn(fstype, rvalue); | |
1100 | } | |
1101 | ||
8a794850 LP |
1102 | static int config_parse_copy_files( |
1103 | const char *unit, | |
1104 | const char *filename, | |
1105 | unsigned line, | |
1106 | const char *section, | |
1107 | unsigned section_line, | |
1108 | const char *lvalue, | |
1109 | int ltype, | |
1110 | const char *rvalue, | |
1111 | void *data, | |
1112 | void *userdata) { | |
1113 | ||
1114 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1115 | const char *p = rvalue, *target; | |
1116 | Partition *partition = data; | |
1117 | int r; | |
1118 | ||
1119 | assert(rvalue); | |
1120 | assert(partition); | |
1121 | ||
1122 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1123 | if (r < 0) | |
1124 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1125 | if (r == 0) { | |
1126 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1131 | if (r < 0) | |
1132 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1133 | if (r == 0) | |
1134 | target = source; /* No target, then it's the same as the source */ | |
1135 | else | |
1136 | target = buffer; | |
1137 | ||
1138 | if (!isempty(p)) | |
1139 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1140 | ||
b3e22322 | 1141 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, NULL, &resolved_source); |
8a794850 LP |
1142 | if (r < 0) { |
1143 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1144 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1145 | return 0; | |
1146 | } | |
1147 | ||
0ade2213 LP |
1148 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1149 | if (r < 0) | |
8a794850 | 1150 | return 0; |
8a794850 | 1151 | |
b3e22322 | 1152 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, NULL, &resolved_target); |
8a794850 LP |
1153 | if (r < 0) { |
1154 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1155 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1156 | return 0; | |
1157 | } | |
1158 | ||
0ade2213 LP |
1159 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1160 | if (r < 0) | |
8a794850 | 1161 | return 0; |
8a794850 LP |
1162 | |
1163 | r = strv_consume_pair(&partition->copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); | |
1164 | if (r < 0) | |
1165 | return log_oom(); | |
1166 | ||
1167 | return 0; | |
1168 | } | |
1169 | ||
5c08da58 LP |
1170 | static int config_parse_copy_blocks( |
1171 | const char *unit, | |
1172 | const char *filename, | |
1173 | unsigned line, | |
1174 | const char *section, | |
1175 | unsigned section_line, | |
1176 | const char *lvalue, | |
1177 | int ltype, | |
1178 | const char *rvalue, | |
1179 | void *data, | |
1180 | void *userdata) { | |
1181 | ||
1182 | _cleanup_free_ char *d = NULL; | |
1183 | Partition *partition = data; | |
1184 | int r; | |
1185 | ||
1186 | assert(rvalue); | |
1187 | assert(partition); | |
1188 | ||
1189 | if (isempty(rvalue)) { | |
1190 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1191 | partition->copy_blocks_auto = false; | |
1192 | return 0; | |
1193 | } | |
1194 | ||
1195 | if (streq(rvalue, "auto")) { | |
1196 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1197 | partition->copy_blocks_auto = true; | |
1198 | return 0; | |
1199 | } | |
1200 | ||
b3e22322 | 1201 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, NULL, &d); |
5c08da58 LP |
1202 | if (r < 0) { |
1203 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1204 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1205 | return 0; | |
1206 | } | |
1207 | ||
1208 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1209 | if (r < 0) | |
1210 | return 0; | |
1211 | ||
1212 | free_and_replace(partition->copy_blocks_path, d); | |
1213 | partition->copy_blocks_auto = false; | |
1214 | return 0; | |
1215 | } | |
1216 | ||
d83d8048 LP |
1217 | static int config_parse_make_dirs( |
1218 | const char *unit, | |
1219 | const char *filename, | |
1220 | unsigned line, | |
1221 | const char *section, | |
1222 | unsigned section_line, | |
1223 | const char *lvalue, | |
1224 | int ltype, | |
1225 | const char *rvalue, | |
1226 | void *data, | |
1227 | void *userdata) { | |
1228 | ||
1229 | Partition *partition = data; | |
1230 | const char *p = rvalue; | |
1231 | int r; | |
1232 | ||
1233 | assert(rvalue); | |
1234 | assert(partition); | |
1235 | ||
1236 | for (;;) { | |
1237 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1238 | ||
1239 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1240 | if (r == -ENOMEM) | |
1241 | return log_oom(); | |
1242 | if (r < 0) { | |
1243 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1244 | return 0; | |
1245 | } | |
1246 | if (r == 0) | |
1247 | return 0; | |
1248 | ||
b3e22322 | 1249 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, NULL, &d); |
d83d8048 LP |
1250 | if (r < 0) { |
1251 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1252 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1253 | continue; | |
1254 | } | |
1255 | ||
1256 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1257 | if (r < 0) | |
1258 | continue; | |
1259 | ||
1260 | r = strv_consume(&partition->make_directories, TAKE_PTR(d)); | |
1261 | if (r < 0) | |
1262 | return log_oom(); | |
1263 | } | |
1264 | } | |
1265 | ||
889914ef LP |
1266 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1267 | ||
e73309c5 LP |
1268 | static int config_parse_gpt_flags( |
1269 | const char *unit, | |
1270 | const char *filename, | |
1271 | unsigned line, | |
1272 | const char *section, | |
1273 | unsigned section_line, | |
1274 | const char *lvalue, | |
1275 | int ltype, | |
1276 | const char *rvalue, | |
1277 | void *data, | |
1278 | void *userdata) { | |
1279 | ||
1280 | uint64_t *gpt_flags = data; | |
1281 | int r; | |
1282 | ||
1283 | assert(rvalue); | |
1284 | assert(gpt_flags); | |
1285 | ||
1286 | r = safe_atou64(rvalue, gpt_flags); | |
1287 | if (r < 0) { | |
1288 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1289 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | return 0; | |
1294 | } | |
1295 | ||
e594a3b1 LP |
1296 | static int partition_read_definition(Partition *p, const char *path) { |
1297 | ||
1298 | ConfigTableItem table[] = { | |
5c08da58 LP |
1299 | { "Partition", "Type", config_parse_type, 0, &p->type_uuid }, |
1300 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, | |
1301 | { "Partition", "UUID", config_parse_id128, 0, &p->new_uuid }, | |
1302 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, | |
1303 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1304 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1305 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1306 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1307 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1308 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1309 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1310 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1311 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1312 | { "Partition", "CopyFiles", config_parse_copy_files, 0, p }, | |
1313 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, p }, | |
1314 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
e73309c5 LP |
1315 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, |
1316 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
ff0771bf | 1317 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, |
1c41c1dc | 1318 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, |
e594a3b1 LP |
1319 | {} |
1320 | }; | |
1321 | int r; | |
1322 | ||
4f9ff96a LP |
1323 | r = config_parse(NULL, path, NULL, |
1324 | "Partition\0", | |
1325 | config_item_table_lookup, table, | |
1326 | CONFIG_PARSE_WARN, | |
1327 | p, | |
1328 | NULL); | |
e594a3b1 LP |
1329 | if (r < 0) |
1330 | return r; | |
1331 | ||
1332 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) | |
1333 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1334 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1335 | ||
1336 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1337 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1338 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1339 | ||
1340 | if (sd_id128_is_null(p->type_uuid)) | |
1341 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1342 | "Type= not defined, refusing."); | |
1343 | ||
5c08da58 LP |
1344 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1345 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
53171c04 | 1346 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5c08da58 | 1347 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); |
53171c04 | 1348 | |
d83d8048 | 1349 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1350 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1351 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1352 | ||
5c08da58 | 1353 | 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 | 1354 | /* Pick "ext4" as file system if we are configured to copy files or encrypt the device */ |
8a794850 LP |
1355 | p->format = strdup("ext4"); |
1356 | if (!p->format) | |
1357 | return log_oom(); | |
1358 | } | |
1359 | ||
e73309c5 LP |
1360 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
1361 | if ((gpt_partition_type_is_root_verity(p->type_uuid) || | |
1362 | gpt_partition_type_is_usr_verity(p->type_uuid)) && | |
1363 | p->read_only < 0) | |
1364 | p->read_only = true; | |
1365 | ||
1c41c1dc LP |
1366 | /* Default to "growfs" on, unless read-only */ |
1367 | if (gpt_partition_type_knows_growfs(p->type_uuid) && | |
1368 | p->read_only <= 0) | |
1369 | p->growfs = true; | |
1370 | ||
e594a3b1 LP |
1371 | return 0; |
1372 | } | |
1373 | ||
1374 | static int context_read_definitions( | |
1375 | Context *context, | |
1376 | const char *directory, | |
1377 | const char *root) { | |
1378 | ||
1379 | _cleanup_strv_free_ char **files = NULL; | |
1380 | Partition *last = NULL; | |
1381 | char **f; | |
1382 | int r; | |
1383 | ||
1384 | assert(context); | |
1385 | ||
1386 | if (directory) | |
1387 | r = conf_files_list_strv(&files, ".conf", NULL, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, (const char**) STRV_MAKE(directory)); | |
1388 | else | |
1389 | r = conf_files_list_strv(&files, ".conf", root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, (const char**) CONF_PATHS_STRV("repart.d")); | |
1390 | if (r < 0) | |
1391 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
1392 | ||
1393 | STRV_FOREACH(f, files) { | |
1394 | _cleanup_(partition_freep) Partition *p = NULL; | |
1395 | ||
1396 | p = partition_new(); | |
1397 | if (!p) | |
1398 | return log_oom(); | |
1399 | ||
1400 | p->definition_path = strdup(*f); | |
1401 | if (!p->definition_path) | |
1402 | return log_oom(); | |
1403 | ||
1404 | r = partition_read_definition(p, *f); | |
1405 | if (r < 0) | |
1406 | return r; | |
1407 | ||
1408 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
1409 | last = TAKE_PTR(p); | |
1410 | context->n_partitions++; | |
1411 | } | |
1412 | ||
1413 | return 0; | |
1414 | } | |
1415 | ||
fd421c4a ZJS |
1416 | DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct fdisk_context*, fdisk_unref_context, NULL); |
1417 | DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct fdisk_partition*, fdisk_unref_partition, NULL); | |
1418 | DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct fdisk_parttype*, fdisk_unref_parttype, NULL); | |
1419 | DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct fdisk_table*, fdisk_unref_table, NULL); | |
e594a3b1 LP |
1420 | |
1421 | static int determine_current_padding( | |
1422 | struct fdisk_context *c, | |
1423 | struct fdisk_table *t, | |
1424 | struct fdisk_partition *p, | |
1425 | uint64_t *ret) { | |
1426 | ||
1427 | size_t n_partitions; | |
1428 | uint64_t offset, next = UINT64_MAX; | |
1429 | ||
1430 | assert(c); | |
1431 | assert(t); | |
1432 | assert(p); | |
1433 | ||
1434 | if (!fdisk_partition_has_end(p)) | |
1435 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1436 | ||
1437 | offset = fdisk_partition_get_end(p); | |
1438 | assert(offset < UINT64_MAX / 512); | |
1439 | offset *= 512; | |
1440 | ||
1441 | n_partitions = fdisk_table_get_nents(t); | |
1442 | for (size_t i = 0; i < n_partitions; i++) { | |
1443 | struct fdisk_partition *q; | |
1444 | uint64_t start; | |
1445 | ||
1446 | q = fdisk_table_get_partition(t, i); | |
1447 | if (!q) | |
1448 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1449 | ||
1450 | if (fdisk_partition_is_used(q) <= 0) | |
1451 | continue; | |
1452 | ||
1453 | if (!fdisk_partition_has_start(q)) | |
1454 | continue; | |
1455 | ||
1456 | start = fdisk_partition_get_start(q); | |
1457 | assert(start < UINT64_MAX / 512); | |
1458 | start *= 512; | |
1459 | ||
1460 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1461 | next = start; | |
1462 | } | |
1463 | ||
1464 | if (next == UINT64_MAX) { | |
1465 | /* No later partition? In that case check the end of the usable area */ | |
1466 | next = fdisk_get_last_lba(c); | |
1467 | assert(next < UINT64_MAX); | |
1468 | next++; /* The last LBA is one sector before the end */ | |
1469 | ||
1470 | assert(next < UINT64_MAX / 512); | |
1471 | next *= 512; | |
1472 | ||
1473 | if (offset > next) | |
1474 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1475 | } | |
1476 | ||
1477 | assert(next >= offset); | |
1478 | offset = round_up_size(offset, 4096); | |
1479 | next = round_down_size(next, 4096); | |
1480 | ||
1481 | if (next >= offset) /* Check again, rounding might have fucked things up */ | |
1482 | *ret = next - offset; | |
1483 | else | |
1484 | *ret = 0; | |
1485 | ||
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { | |
1490 | _cleanup_free_ char *ids = NULL; | |
1491 | int r; | |
1492 | ||
1493 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
1494 | return -EINVAL; | |
1495 | ||
1496 | ids = new(char, ID128_UUID_STRING_MAX); | |
1497 | if (!ids) | |
1498 | return -ENOMEM; | |
1499 | ||
1500 | r = fdisk_ask_string_set_result(ask, id128_to_uuid_string(*(sd_id128_t*) data, ids)); | |
1501 | if (r < 0) | |
1502 | return r; | |
1503 | ||
1504 | TAKE_PTR(ids); | |
1505 | return 0; | |
1506 | } | |
1507 | ||
1508 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
1509 | int r; | |
1510 | ||
1511 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
1512 | if (r < 0) | |
1513 | return r; | |
1514 | ||
1515 | r = fdisk_set_disklabel_id(c); | |
1516 | if (r < 0) | |
1517 | return r; | |
1518 | ||
1519 | return fdisk_set_ask(c, NULL, NULL); | |
1520 | } | |
1521 | ||
53171c04 | 1522 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 LP |
1523 | union { |
1524 | unsigned char md[SHA256_DIGEST_LENGTH]; | |
1525 | sd_id128_t id; | |
1526 | } result; | |
1527 | ||
53171c04 | 1528 | assert(token); |
e594a3b1 LP |
1529 | assert(ret); |
1530 | ||
53171c04 LP |
1531 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
1532 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
1533 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
1534 | * the machine ID we don't want to leak. */ | |
e594a3b1 LP |
1535 | |
1536 | if (!HMAC(EVP_sha256(), | |
53171c04 LP |
1537 | &base, sizeof(base), |
1538 | (const unsigned char*) token, strlen(token), | |
e594a3b1 LP |
1539 | result.md, NULL)) |
1540 | return log_error_errno(SYNTHETIC_ERRNO(ENOTRECOVERABLE), "HMAC-SHA256 calculation failed."); | |
1541 | ||
1542 | /* Take the first half, mark it as v4 UUID */ | |
1543 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
1544 | *ret = id128_make_v4_uuid(result.id); | |
1545 | return 0; | |
1546 | } | |
1547 | ||
a26f4a49 LP |
1548 | static int context_load_partition_table( |
1549 | Context *context, | |
1550 | const char *node, | |
1551 | int *backing_fd) { | |
1552 | ||
e594a3b1 LP |
1553 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
1554 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
1555 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
1556 | _cleanup_free_ char *disk_uuid_string = NULL; | |
1557 | bool from_scratch = false; | |
1558 | sd_id128_t disk_uuid; | |
1559 | size_t n_partitions; | |
1560 | int r; | |
1561 | ||
1562 | assert(context); | |
1563 | assert(node); | |
a26f4a49 | 1564 | assert(backing_fd); |
170c9823 LP |
1565 | assert(!context->fdisk_context); |
1566 | assert(!context->free_areas); | |
1567 | assert(context->start == UINT64_MAX); | |
1568 | assert(context->end == UINT64_MAX); | |
1569 | assert(context->total == UINT64_MAX); | |
e594a3b1 LP |
1570 | |
1571 | c = fdisk_new_context(); | |
1572 | if (!c) | |
1573 | return log_oom(); | |
1574 | ||
a26f4a49 LP |
1575 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
1576 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
1577 | if (*backing_fd < 0) | |
1578 | r = fdisk_assign_device(c, node, arg_dry_run); | |
1579 | else { | |
1580 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; | |
1581 | xsprintf(procfs_path, "/proc/self/fd/%i", *backing_fd); | |
1582 | ||
1583 | r = fdisk_assign_device(c, procfs_path, arg_dry_run); | |
1584 | } | |
170c9823 LP |
1585 | if (r == -EINVAL && arg_size_auto) { |
1586 | struct stat st; | |
1587 | ||
1588 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
1589 | * it if automatic sizing is requested. */ | |
1590 | ||
1591 | if (*backing_fd < 0) | |
1592 | r = stat(node, &st); | |
1593 | else | |
1594 | r = fstat(*backing_fd, &st); | |
1595 | if (r < 0) | |
1596 | return log_error_errno(errno, "Failed to stat block device '%s': %m", node); | |
1597 | ||
1598 | if (S_ISREG(st.st_mode) && st.st_size == 0) | |
1599 | return /* from_scratch = */ true; | |
1600 | ||
1601 | r = -EINVAL; | |
1602 | } | |
e594a3b1 | 1603 | if (r < 0) |
a26f4a49 LP |
1604 | return log_error_errno(r, "Failed to open device '%s': %m", node); |
1605 | ||
1606 | if (*backing_fd < 0) { | |
1607 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ | |
1608 | *backing_fd = fcntl(fdisk_get_devfd(c), F_DUPFD_CLOEXEC, 3); | |
1609 | if (*backing_fd < 0) | |
1610 | return log_error_errno(errno, "Failed to duplicate fdisk fd: %m"); | |
1611 | } | |
e594a3b1 LP |
1612 | |
1613 | /* Tell udev not to interfere while we are processing the device */ | |
1614 | if (flock(fdisk_get_devfd(c), arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
1615 | return log_error_errno(errno, "Failed to lock block device: %m"); | |
1616 | ||
1617 | switch (arg_empty) { | |
1618 | ||
1619 | case EMPTY_REFUSE: | |
1620 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
1621 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
1622 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", node); | |
1623 | ||
1624 | break; | |
1625 | ||
1626 | case EMPTY_REQUIRE: | |
1627 | /* Require an empty disk, refuse any existing partition table */ | |
1628 | r = fdisk_has_label(c); | |
1629 | if (r < 0) | |
1630 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
1631 | if (r > 0) | |
1632 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", node); | |
1633 | ||
1634 | from_scratch = true; | |
1635 | break; | |
1636 | ||
1637 | case EMPTY_ALLOW: | |
1638 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
1639 | r = fdisk_has_label(c); | |
1640 | if (r < 0) | |
1641 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
1642 | if (r > 0) { | |
1643 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
1644 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", node); | |
1645 | } else | |
1646 | from_scratch = true; | |
1647 | ||
1648 | break; | |
1649 | ||
1650 | case EMPTY_FORCE: | |
a26f4a49 | 1651 | case EMPTY_CREATE: |
e594a3b1 LP |
1652 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
1653 | from_scratch = true; | |
1654 | break; | |
1655 | } | |
1656 | ||
1657 | if (from_scratch) { | |
e594a3b1 LP |
1658 | r = fdisk_create_disklabel(c, "gpt"); |
1659 | if (r < 0) | |
1660 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
1661 | ||
53171c04 | 1662 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
1663 | if (r < 0) |
1664 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
1665 | ||
1666 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
1667 | if (r < 0) | |
1668 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
1669 | ||
1670 | goto add_initial_free_area; | |
1671 | } | |
1672 | ||
1673 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
1674 | if (r < 0) | |
1675 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
1676 | ||
1677 | r = sd_id128_from_string(disk_uuid_string, &disk_uuid); | |
1678 | if (r < 0) | |
1679 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
1680 | ||
1681 | if (sd_id128_is_null(disk_uuid)) { | |
53171c04 | 1682 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
1683 | if (r < 0) |
1684 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
1685 | ||
1686 | r = fdisk_set_disklabel_id(c); | |
1687 | if (r < 0) | |
1688 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
1689 | } | |
1690 | ||
1691 | r = fdisk_get_partitions(c, &t); | |
1692 | if (r < 0) | |
1693 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
1694 | ||
1695 | n_partitions = fdisk_table_get_nents(t); | |
1696 | for (size_t i = 0; i < n_partitions; i++) { | |
1697 | _cleanup_free_ char *label_copy = NULL; | |
1698 | Partition *pp, *last = NULL; | |
1699 | struct fdisk_partition *p; | |
1700 | struct fdisk_parttype *pt; | |
1701 | const char *pts, *ids, *label; | |
1702 | uint64_t sz, start; | |
1703 | bool found = false; | |
1704 | sd_id128_t ptid, id; | |
1705 | size_t partno; | |
1706 | ||
1707 | p = fdisk_table_get_partition(t, i); | |
1708 | if (!p) | |
1709 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1710 | ||
1711 | if (fdisk_partition_is_used(p) <= 0) | |
1712 | continue; | |
1713 | ||
1714 | if (fdisk_partition_has_start(p) <= 0 || | |
1715 | fdisk_partition_has_size(p) <= 0 || | |
1716 | fdisk_partition_has_partno(p) <= 0) | |
1717 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
1718 | ||
1719 | pt = fdisk_partition_get_type(p); | |
1720 | if (!pt) | |
1721 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition: %m"); | |
1722 | ||
1723 | pts = fdisk_parttype_get_string(pt); | |
1724 | if (!pts) | |
1725 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition as string: %m"); | |
1726 | ||
1727 | r = sd_id128_from_string(pts, &ptid); | |
1728 | if (r < 0) | |
1729 | return log_error_errno(r, "Failed to parse partition type UUID %s: %m", pts); | |
1730 | ||
1731 | ids = fdisk_partition_get_uuid(p); | |
1732 | if (!ids) | |
1733 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a UUID."); | |
1734 | ||
1735 | r = sd_id128_from_string(ids, &id); | |
1736 | if (r < 0) | |
1737 | return log_error_errno(r, "Failed to parse partition UUID %s: %m", ids); | |
1738 | ||
1739 | label = fdisk_partition_get_name(p); | |
1740 | if (!isempty(label)) { | |
1741 | label_copy = strdup(label); | |
1742 | if (!label_copy) | |
1743 | return log_oom(); | |
1744 | } | |
1745 | ||
1746 | sz = fdisk_partition_get_size(p); | |
1747 | assert_se(sz <= UINT64_MAX/512); | |
1748 | sz *= 512; | |
1749 | ||
1750 | start = fdisk_partition_get_start(p); | |
1751 | assert_se(start <= UINT64_MAX/512); | |
1752 | start *= 512; | |
1753 | ||
1754 | partno = fdisk_partition_get_partno(p); | |
1755 | ||
1756 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
1757 | left_boundary = start; | |
1758 | ||
1759 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
1760 | * an existing one assigned yet. */ | |
1761 | LIST_FOREACH(partitions, pp, context->partitions) { | |
1762 | last = pp; | |
1763 | ||
1764 | if (!sd_id128_equal(pp->type_uuid, ptid)) | |
1765 | continue; | |
1766 | ||
1767 | if (!pp->current_partition) { | |
1768 | pp->current_uuid = id; | |
1769 | pp->current_size = sz; | |
1770 | pp->offset = start; | |
1771 | pp->partno = partno; | |
1772 | pp->current_label = TAKE_PTR(label_copy); | |
1773 | ||
1774 | pp->current_partition = p; | |
1775 | fdisk_ref_partition(p); | |
1776 | ||
1777 | r = determine_current_padding(c, t, p, &pp->current_padding); | |
1778 | if (r < 0) | |
1779 | return r; | |
1780 | ||
1781 | if (pp->current_padding > 0) { | |
1782 | r = context_add_free_area(context, pp->current_padding, pp); | |
1783 | if (r < 0) | |
1784 | return r; | |
1785 | } | |
1786 | ||
1787 | found = true; | |
1788 | break; | |
1789 | } | |
1790 | } | |
1791 | ||
1792 | /* If we have no matching definition, create a new one. */ | |
1793 | if (!found) { | |
1794 | _cleanup_(partition_freep) Partition *np = NULL; | |
1795 | ||
1796 | np = partition_new(); | |
1797 | if (!np) | |
1798 | return log_oom(); | |
1799 | ||
1800 | np->current_uuid = id; | |
1801 | np->type_uuid = ptid; | |
1802 | np->current_size = sz; | |
1803 | np->offset = start; | |
1804 | np->partno = partno; | |
1805 | np->current_label = TAKE_PTR(label_copy); | |
1806 | ||
1807 | np->current_partition = p; | |
1808 | fdisk_ref_partition(p); | |
1809 | ||
1810 | r = determine_current_padding(c, t, p, &np->current_padding); | |
1811 | if (r < 0) | |
1812 | return r; | |
1813 | ||
1814 | if (np->current_padding > 0) { | |
1815 | r = context_add_free_area(context, np->current_padding, np); | |
1816 | if (r < 0) | |
1817 | return r; | |
1818 | } | |
1819 | ||
1820 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
1821 | context->n_partitions++; | |
1822 | } | |
1823 | } | |
1824 | ||
1825 | add_initial_free_area: | |
1826 | nsectors = fdisk_get_nsectors(c); | |
1827 | assert(nsectors <= UINT64_MAX/512); | |
1828 | nsectors *= 512; | |
1829 | ||
1830 | first_lba = fdisk_get_first_lba(c); | |
1831 | assert(first_lba <= UINT64_MAX/512); | |
1832 | first_lba *= 512; | |
1833 | ||
1834 | last_lba = fdisk_get_last_lba(c); | |
1835 | assert(last_lba < UINT64_MAX); | |
1836 | last_lba++; | |
1837 | assert(last_lba <= UINT64_MAX/512); | |
1838 | last_lba *= 512; | |
1839 | ||
1840 | assert(last_lba >= first_lba); | |
1841 | ||
1842 | if (left_boundary == UINT64_MAX) { | |
1843 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
1844 | ||
1845 | first_lba = round_up_size(first_lba, 4096); | |
1846 | last_lba = round_down_size(last_lba, 4096); | |
1847 | ||
1848 | if (last_lba > first_lba) { | |
1849 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
1850 | if (r < 0) | |
1851 | return r; | |
1852 | } | |
1853 | } else { | |
1854 | /* Add space left of first partition */ | |
1855 | assert(left_boundary >= first_lba); | |
1856 | ||
1857 | first_lba = round_up_size(first_lba, 4096); | |
1858 | left_boundary = round_down_size(left_boundary, 4096); | |
1859 | last_lba = round_down_size(last_lba, 4096); | |
1860 | ||
1861 | if (left_boundary > first_lba) { | |
1862 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
1863 | if (r < 0) | |
1864 | return r; | |
1865 | } | |
1866 | } | |
1867 | ||
1868 | context->start = first_lba; | |
1869 | context->end = last_lba; | |
1870 | context->total = nsectors; | |
1871 | context->fdisk_context = TAKE_PTR(c); | |
1872 | ||
1873 | return from_scratch; | |
1874 | } | |
1875 | ||
1876 | static void context_unload_partition_table(Context *context) { | |
1877 | Partition *p, *next; | |
1878 | ||
1879 | assert(context); | |
1880 | ||
1881 | LIST_FOREACH_SAFE(partitions, p, next, context->partitions) { | |
1882 | ||
1883 | /* Entirely remove partitions that have no configuration */ | |
1884 | if (PARTITION_IS_FOREIGN(p)) { | |
1885 | partition_unlink_and_free(context, p); | |
1886 | continue; | |
1887 | } | |
1888 | ||
1889 | /* Otherwise drop all data we read off the block device and everything we might have | |
1890 | * calculated based on it */ | |
1891 | ||
1892 | p->dropped = false; | |
1893 | p->current_size = UINT64_MAX; | |
1894 | p->new_size = UINT64_MAX; | |
1895 | p->current_padding = UINT64_MAX; | |
1896 | p->new_padding = UINT64_MAX; | |
1897 | p->partno = UINT64_MAX; | |
1898 | p->offset = UINT64_MAX; | |
1899 | ||
1900 | if (p->current_partition) { | |
1901 | fdisk_unref_partition(p->current_partition); | |
1902 | p->current_partition = NULL; | |
1903 | } | |
1904 | ||
1905 | if (p->new_partition) { | |
1906 | fdisk_unref_partition(p->new_partition); | |
1907 | p->new_partition = NULL; | |
1908 | } | |
1909 | ||
1910 | p->padding_area = NULL; | |
1911 | p->allocated_to_area = NULL; | |
1912 | ||
15d43e30 LP |
1913 | p->current_uuid = SD_ID128_NULL; |
1914 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
1915 | } |
1916 | ||
1917 | context->start = UINT64_MAX; | |
1918 | context->end = UINT64_MAX; | |
1919 | context->total = UINT64_MAX; | |
1920 | ||
1921 | if (context->fdisk_context) { | |
1922 | fdisk_unref_context(context->fdisk_context); | |
1923 | context->fdisk_context = NULL; | |
1924 | } | |
1925 | ||
1926 | context_free_free_areas(context); | |
1927 | } | |
1928 | ||
1929 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
1930 | char format_buffer1[FORMAT_BYTES_MAX], format_buffer2[FORMAT_BYTES_MAX], *buf; | |
1931 | ||
1932 | if (from != UINT64_MAX) | |
1933 | format_bytes(format_buffer1, sizeof(format_buffer1), from); | |
1934 | if (to != UINT64_MAX) | |
1935 | format_bytes(format_buffer2, sizeof(format_buffer2), to); | |
1936 | ||
1937 | if (from != UINT64_MAX) { | |
1938 | if (from == to || to == UINT64_MAX) | |
1939 | buf = strdup(format_buffer1); | |
1940 | else | |
1941 | buf = strjoin(format_buffer1, " ", special_glyph(SPECIAL_GLYPH_ARROW), " ", format_buffer2); | |
1942 | } else if (to != UINT64_MAX) | |
1943 | buf = strjoin(special_glyph(SPECIAL_GLYPH_ARROW), " ", format_buffer2); | |
1944 | else { | |
1945 | *ret = NULL; | |
1946 | return 0; | |
1947 | } | |
1948 | ||
1949 | if (!buf) | |
1950 | return log_oom(); | |
1951 | ||
1952 | *ret = TAKE_PTR(buf); | |
1953 | return 1; | |
1954 | } | |
1955 | ||
1956 | static const char *partition_label(const Partition *p) { | |
1957 | assert(p); | |
1958 | ||
1959 | if (p->new_label) | |
1960 | return p->new_label; | |
1961 | ||
1962 | if (p->current_label) | |
1963 | return p->current_label; | |
1964 | ||
1965 | return gpt_partition_type_uuid_to_string(p->type_uuid); | |
1966 | } | |
1967 | ||
1968 | static int context_dump_partitions(Context *context, const char *node) { | |
1969 | _cleanup_(table_unrefp) Table *t = NULL; | |
1970 | uint64_t sum_padding = 0, sum_size = 0; | |
1971 | Partition *p; | |
1972 | int r; | |
1973 | ||
6a01ea4a | 1974 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
1975 | log_info("Empty partition table."); |
1976 | return 0; | |
1977 | } | |
1978 | ||
1979 | t = table_new("type", "label", "uuid", "file", "node", "offset", "old size", "raw size", "size", "old padding", "raw padding", "padding", "activity"); | |
e594a3b1 LP |
1980 | if (!t) |
1981 | return log_oom(); | |
1982 | ||
a015fbe7 | 1983 | if (!DEBUG_LOGGING) { |
6a01ea4a | 1984 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 1985 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
ef1e0b9a | 1986 | (size_t) 8, (size_t) 11); |
a015fbe7 TH |
1987 | else |
1988 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
ef1e0b9a | 1989 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 9, (size_t) 10, (size_t) 12); |
a015fbe7 | 1990 | } |
e594a3b1 | 1991 | |
e594a3b1 | 1992 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
1993 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
1994 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
1995 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
1996 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
1997 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
1998 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
1999 | |
2000 | LIST_FOREACH(partitions, p, context->partitions) { | |
2001 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL; | |
2002 | char uuid_buffer[ID128_UUID_STRING_MAX]; | |
a015fbe7 | 2003 | const char *label, *activity = NULL; |
e594a3b1 LP |
2004 | |
2005 | if (p->dropped) | |
2006 | continue; | |
2007 | ||
a015fbe7 TH |
2008 | if (p->current_size == UINT64_MAX) |
2009 | activity = "create"; | |
2010 | else if (p->current_size != p->new_size) | |
2011 | activity = "resize"; | |
2012 | ||
e594a3b1 LP |
2013 | label = partition_label(p); |
2014 | partname = p->partno != UINT64_MAX ? fdisk_partname(node, p->partno+1) : NULL; | |
2015 | ||
2016 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2017 | if (r < 0) | |
2018 | return r; | |
2019 | ||
2020 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2021 | if (r < 0) | |
2022 | return r; | |
2023 | ||
2024 | if (p->new_size != UINT64_MAX) | |
2025 | sum_size += p->new_size; | |
2026 | if (p->new_padding != UINT64_MAX) | |
2027 | sum_padding += p->new_padding; | |
2028 | ||
2029 | r = table_add_many( | |
2030 | t, | |
2031 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type_uuid, uuid_buffer), | |
be9ce018 | 2032 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
e594a3b1 LP |
2033 | TABLE_UUID, sd_id128_is_null(p->new_uuid) ? p->current_uuid : p->new_uuid, |
2034 | TABLE_STRING, p->definition_path ? basename(p->definition_path) : "-", TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), | |
a015fbe7 | 2035 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2036 | TABLE_UINT64, p->offset, |
a015fbe7 | 2037 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2038 | TABLE_UINT64, p->new_size, |
2039 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2040 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2041 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2042 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
05a2166a | 2043 | TABLE_STRING, activity ?: "unchanged"); |
e594a3b1 | 2044 | if (r < 0) |
f987a261 | 2045 | return table_log_add_error(r); |
e594a3b1 LP |
2046 | } |
2047 | ||
6a01ea4a | 2048 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2049 | char s[FORMAT_BYTES_MAX]; |
2050 | const char *a, *b; | |
2051 | ||
2052 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", format_bytes(s, sizeof(s), sum_size)); | |
2053 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", format_bytes(s, sizeof(s), sum_padding)); | |
2054 | ||
2055 | r = table_add_many( | |
2056 | t, | |
2057 | TABLE_EMPTY, | |
2058 | TABLE_EMPTY, | |
2059 | TABLE_EMPTY, | |
2060 | TABLE_EMPTY, | |
2061 | TABLE_EMPTY, | |
2062 | TABLE_EMPTY, | |
2063 | TABLE_EMPTY, | |
a015fbe7 | 2064 | TABLE_EMPTY, |
e594a3b1 LP |
2065 | TABLE_STRING, a, |
2066 | TABLE_EMPTY, | |
a015fbe7 TH |
2067 | TABLE_EMPTY, |
2068 | TABLE_STRING, b, | |
2069 | TABLE_EMPTY); | |
e594a3b1 | 2070 | if (r < 0) |
f987a261 | 2071 | return table_log_add_error(r); |
e594a3b1 LP |
2072 | } |
2073 | ||
896e678b | 2074 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2075 | } |
2076 | ||
2077 | static void context_bar_char_process_partition( | |
2078 | Context *context, | |
2079 | Partition *bar[], | |
2080 | size_t n, | |
2081 | Partition *p, | |
2082 | size_t *ret_start) { | |
2083 | ||
2084 | uint64_t from, to, total; | |
2085 | size_t x, y; | |
2086 | ||
2087 | assert(context); | |
2088 | assert(bar); | |
2089 | assert(n > 0); | |
2090 | assert(p); | |
2091 | ||
2092 | if (p->dropped) | |
2093 | return; | |
2094 | ||
2095 | assert(p->offset != UINT64_MAX); | |
2096 | assert(p->new_size != UINT64_MAX); | |
2097 | ||
2098 | from = p->offset; | |
2099 | to = from + p->new_size; | |
2100 | ||
2101 | assert(context->end >= context->start); | |
2102 | total = context->end - context->start; | |
2103 | ||
2104 | assert(from >= context->start); | |
2105 | assert(from <= context->end); | |
2106 | x = (from - context->start) * n / total; | |
2107 | ||
2108 | assert(to >= context->start); | |
2109 | assert(to <= context->end); | |
2110 | y = (to - context->start) * n / total; | |
2111 | ||
2112 | assert(x <= y); | |
2113 | assert(y <= n); | |
2114 | ||
2115 | for (size_t i = x; i < y; i++) | |
2116 | bar[i] = p; | |
2117 | ||
2118 | *ret_start = x; | |
2119 | } | |
2120 | ||
2121 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2122 | _cleanup_free_ char *buf = NULL; | |
2123 | char ids[ID128_UUID_STRING_MAX]; | |
2124 | const char *label; | |
2125 | sd_id128_t id; | |
2126 | ||
2127 | /* Tries really hard to find a suitable description for this partition */ | |
2128 | ||
2129 | if (p->definition_path) { | |
2130 | buf = strdup(basename(p->definition_path)); | |
2131 | goto done; | |
2132 | } | |
2133 | ||
2134 | label = partition_label(p); | |
2135 | if (!isempty(label)) { | |
2136 | buf = strdup(label); | |
2137 | goto done; | |
2138 | } | |
2139 | ||
2140 | if (p->partno != UINT64_MAX) { | |
2141 | buf = fdisk_partname(node, p->partno+1); | |
2142 | goto done; | |
2143 | } | |
2144 | ||
2145 | if (!sd_id128_is_null(p->new_uuid)) | |
2146 | id = p->new_uuid; | |
2147 | else if (!sd_id128_is_null(p->current_uuid)) | |
2148 | id = p->current_uuid; | |
2149 | else | |
2150 | id = p->type_uuid; | |
2151 | ||
2152 | buf = strdup(id128_to_uuid_string(id, ids)); | |
2153 | ||
2154 | done: | |
2155 | if (!buf) | |
2156 | return -ENOMEM; | |
2157 | ||
2158 | *ret = TAKE_PTR(buf); | |
2159 | return 0; | |
2160 | } | |
2161 | ||
2162 | static int context_dump_partition_bar(Context *context, const char *node) { | |
2163 | _cleanup_free_ Partition **bar = NULL; | |
2164 | _cleanup_free_ size_t *start_array = NULL; | |
2165 | Partition *p, *last = NULL; | |
2166 | bool z = false; | |
2167 | size_t c, j = 0; | |
2168 | ||
f391597c | 2169 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2170 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2171 | ||
2172 | bar = new0(Partition*, c); | |
2173 | if (!bar) | |
2174 | return log_oom(); | |
2175 | ||
2176 | start_array = new(size_t, context->n_partitions); | |
2177 | if (!start_array) | |
2178 | return log_oom(); | |
2179 | ||
2180 | LIST_FOREACH(partitions, p, context->partitions) | |
2181 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2182 | ||
2183 | putc(' ', stdout); | |
2184 | ||
2185 | for (size_t i = 0; i < c; i++) { | |
2186 | if (bar[i]) { | |
2187 | if (last != bar[i]) | |
2188 | z = !z; | |
2189 | ||
2190 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2191 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2192 | } else { | |
2193 | fputs(ansi_normal(), stdout); | |
2194 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2195 | } | |
2196 | ||
2197 | last = bar[i]; | |
2198 | } | |
2199 | ||
2200 | fputs(ansi_normal(), stdout); | |
2201 | putc('\n', stdout); | |
2202 | ||
2203 | for (size_t i = 0; i < context->n_partitions; i++) { | |
2204 | _cleanup_free_ char **line = NULL; | |
2205 | ||
2206 | line = new0(char*, c); | |
2207 | if (!line) | |
2208 | return log_oom(); | |
2209 | ||
2210 | j = 0; | |
2211 | LIST_FOREACH(partitions, p, context->partitions) { | |
2212 | _cleanup_free_ char *d = NULL; | |
2213 | j++; | |
2214 | ||
2215 | if (i < context->n_partitions - j) { | |
2216 | ||
2217 | if (line[start_array[j-1]]) { | |
2218 | const char *e; | |
2219 | ||
2220 | /* Upgrade final corner to the right with a branch to the right */ | |
2221 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
2222 | if (e) { | |
2223 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
2224 | if (!d) | |
2225 | return log_oom(); | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | if (!d) { | |
2230 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
2231 | if (!d) | |
2232 | return log_oom(); | |
2233 | } | |
2234 | ||
2235 | } else if (i == context->n_partitions - j) { | |
2236 | _cleanup_free_ char *hint = NULL; | |
2237 | ||
2238 | (void) partition_hint(p, node, &hint); | |
2239 | ||
2240 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
2241 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
2242 | else | |
2243 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
2244 | ||
2245 | if (!d) | |
2246 | return log_oom(); | |
2247 | } | |
2248 | ||
2249 | if (d) | |
2250 | free_and_replace(line[start_array[j-1]], d); | |
2251 | } | |
2252 | ||
2253 | putc(' ', stdout); | |
2254 | ||
2255 | j = 0; | |
2256 | while (j < c) { | |
2257 | if (line[j]) { | |
2258 | fputs(line[j], stdout); | |
2259 | j += utf8_console_width(line[j]); | |
2260 | } else { | |
2261 | putc(' ', stdout); | |
2262 | j++; | |
2263 | } | |
2264 | } | |
2265 | ||
2266 | putc('\n', stdout); | |
2267 | ||
2268 | for (j = 0; j < c; j++) | |
2269 | free(line[j]); | |
2270 | } | |
2271 | ||
2272 | return 0; | |
2273 | } | |
2274 | ||
2275 | static bool context_changed(const Context *context) { | |
2276 | Partition *p; | |
2277 | ||
2278 | LIST_FOREACH(partitions, p, context->partitions) { | |
2279 | if (p->dropped) | |
2280 | continue; | |
2281 | ||
2282 | if (p->allocated_to_area) | |
2283 | return true; | |
2284 | ||
2285 | if (p->new_size != p->current_size) | |
2286 | return true; | |
2287 | } | |
2288 | ||
2289 | return false; | |
2290 | } | |
2291 | ||
81873a6b | 2292 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
2293 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
2294 | int r; | |
2295 | ||
2296 | assert(context); | |
81873a6b LP |
2297 | assert(offset != UINT64_MAX); |
2298 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
2299 | |
2300 | probe = blkid_new_probe(); | |
2301 | if (!probe) | |
2302 | return log_oom(); | |
2303 | ||
e594a3b1 | 2304 | errno = 0; |
81873a6b | 2305 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 2306 | if (r < 0) |
81873a6b | 2307 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
2308 | |
2309 | errno = 0; | |
2310 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
2311 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
2312 | blkid_probe_enable_partitions(probe, true) < 0 || | |
2313 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 2314 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
2315 | |
2316 | for (;;) { | |
2317 | errno = 0; | |
2318 | r = blkid_do_probe(probe); | |
2319 | if (r < 0) | |
2320 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
2321 | if (r > 0) | |
2322 | break; | |
2323 | ||
2324 | errno = 0; | |
2325 | if (blkid_do_wipe(probe, false) < 0) | |
2326 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
2327 | } | |
2328 | ||
e594a3b1 LP |
2329 | return 0; |
2330 | } | |
2331 | ||
81873a6b LP |
2332 | static int context_wipe_partition(Context *context, Partition *p) { |
2333 | int r; | |
2334 | ||
2335 | assert(context); | |
2336 | assert(p); | |
2337 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
2338 | ||
2339 | assert(p->offset != UINT64_MAX); | |
2340 | assert(p->new_size != UINT64_MAX); | |
2341 | ||
2342 | r = context_wipe_range(context, p->offset, p->new_size); | |
2343 | if (r < 0) | |
2344 | return r; | |
2345 | ||
2346 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
2347 | return 0; | |
2348 | } | |
2349 | ||
2350 | static int context_discard_range( | |
2351 | Context *context, | |
2352 | uint64_t offset, | |
2353 | uint64_t size) { | |
2354 | ||
e594a3b1 LP |
2355 | struct stat st; |
2356 | int fd; | |
2357 | ||
2358 | assert(context); | |
2359 | assert(offset != UINT64_MAX); | |
2360 | assert(size != UINT64_MAX); | |
2361 | ||
2362 | if (size <= 0) | |
2363 | return 0; | |
2364 | ||
a26f4a49 | 2365 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
2366 | |
2367 | if (fstat(fd, &st) < 0) | |
2368 | return -errno; | |
2369 | ||
2370 | if (S_ISREG(st.st_mode)) { | |
2371 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
2372 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2373 | return -EOPNOTSUPP; | |
2374 | ||
2375 | return -errno; | |
2376 | } | |
2377 | ||
2378 | return 1; | |
2379 | } | |
2380 | ||
2381 | if (S_ISBLK(st.st_mode)) { | |
2382 | uint64_t range[2], end; | |
2383 | ||
2384 | range[0] = round_up_size(offset, 512); | |
2385 | ||
55d38014 LP |
2386 | if (offset > UINT64_MAX - size) |
2387 | return -ERANGE; | |
2388 | ||
e594a3b1 LP |
2389 | end = offset + size; |
2390 | if (end <= range[0]) | |
2391 | return 0; | |
2392 | ||
2393 | range[1] = round_down_size(end - range[0], 512); | |
2394 | if (range[1] <= 0) | |
2395 | return 0; | |
2396 | ||
2397 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
2398 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2399 | return -EOPNOTSUPP; | |
2400 | ||
2401 | return -errno; | |
2402 | } | |
2403 | ||
2404 | return 1; | |
2405 | } | |
2406 | ||
2407 | return -EOPNOTSUPP; | |
2408 | } | |
2409 | ||
2410 | static int context_discard_partition(Context *context, Partition *p) { | |
2411 | int r; | |
2412 | ||
2413 | assert(context); | |
2414 | assert(p); | |
2415 | ||
2416 | assert(p->offset != UINT64_MAX); | |
2417 | assert(p->new_size != UINT64_MAX); | |
2418 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
2419 | ||
2420 | if (!arg_discard) | |
2421 | return 0; | |
2422 | ||
2423 | r = context_discard_range(context, p->offset, p->new_size); | |
2424 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 2425 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2426 | return 0; |
2427 | } | |
22163eb5 LP |
2428 | if (r == -EBUSY) { |
2429 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
2430 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
2431 | return 0; | |
2432 | } | |
e594a3b1 LP |
2433 | if (r == 0) { |
2434 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
2435 | return 0; | |
2436 | } | |
2437 | if (r < 0) | |
5b5109e2 | 2438 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2439 | |
5b5109e2 | 2440 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2441 | return 1; |
2442 | } | |
2443 | ||
2444 | static int context_discard_gap_after(Context *context, Partition *p) { | |
2445 | uint64_t gap, next = UINT64_MAX; | |
2446 | Partition *q; | |
2447 | int r; | |
2448 | ||
2449 | assert(context); | |
2450 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
2451 | ||
2452 | if (p) | |
2453 | gap = p->offset + p->new_size; | |
2454 | else | |
2455 | gap = context->start; | |
2456 | ||
2457 | LIST_FOREACH(partitions, q, context->partitions) { | |
2458 | if (q->dropped) | |
2459 | continue; | |
2460 | ||
2461 | assert(q->offset != UINT64_MAX); | |
2462 | assert(q->new_size != UINT64_MAX); | |
2463 | ||
2464 | if (q->offset < gap) | |
2465 | continue; | |
2466 | ||
2467 | if (next == UINT64_MAX || q->offset < next) | |
2468 | next = q->offset; | |
2469 | } | |
2470 | ||
2471 | if (next == UINT64_MAX) { | |
2472 | next = context->end; | |
2473 | if (gap > next) | |
2474 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
2475 | } | |
2476 | ||
2477 | assert(next >= gap); | |
2478 | r = context_discard_range(context, gap, next - gap); | |
2479 | if (r == -EOPNOTSUPP) { | |
2480 | if (p) | |
5b5109e2 | 2481 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2482 | else |
5b5109e2 | 2483 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
2484 | return 0; |
2485 | } | |
2486 | if (r == 0) /* Too short */ | |
2487 | return 0; | |
2488 | if (r < 0) { | |
2489 | if (p) | |
2490 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
2491 | else | |
2492 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
2493 | } | |
2494 | ||
2495 | if (p) | |
2496 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
2497 | else | |
2498 | log_info("Successfully discarded gap at beginning of disk."); | |
2499 | ||
2500 | return 0; | |
2501 | } | |
2502 | ||
2503 | static int context_wipe_and_discard(Context *context, bool from_scratch) { | |
2504 | Partition *p; | |
2505 | int r; | |
2506 | ||
2507 | assert(context); | |
2508 | ||
2509 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if | |
2510 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
2511 | * device in one go early on. */ | |
2512 | ||
2513 | LIST_FOREACH(partitions, p, context->partitions) { | |
2514 | ||
2515 | if (!p->allocated_to_area) | |
2516 | continue; | |
2517 | ||
e594a3b1 LP |
2518 | r = context_wipe_partition(context, p); |
2519 | if (r < 0) | |
2520 | return r; | |
2521 | ||
2522 | if (!from_scratch) { | |
f0cb1b95 LP |
2523 | r = context_discard_partition(context, p); |
2524 | if (r < 0) | |
2525 | return r; | |
2526 | ||
e594a3b1 LP |
2527 | r = context_discard_gap_after(context, p); |
2528 | if (r < 0) | |
2529 | return r; | |
2530 | } | |
2531 | } | |
2532 | ||
2533 | if (!from_scratch) { | |
2534 | r = context_discard_gap_after(context, NULL); | |
2535 | if (r < 0) | |
2536 | return r; | |
2537 | } | |
2538 | ||
2539 | return 0; | |
2540 | } | |
2541 | ||
b9df3536 LP |
2542 | static int partition_encrypt( |
2543 | Partition *p, | |
2544 | const char *node, | |
2545 | struct crypt_device **ret_cd, | |
2546 | char **ret_volume, | |
2547 | int *ret_fd) { | |
3dd8ae5c | 2548 | #if HAVE_LIBCRYPTSETUP |
0d12936d | 2549 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
b9df3536 LP |
2550 | _cleanup_(erase_and_freep) void *volume_key = NULL; |
2551 | _cleanup_free_ char *dm_name = NULL, *vol = NULL; | |
2552 | char suuid[ID128_UUID_STRING_MAX]; | |
2553 | size_t volume_key_size = 256 / 8; | |
2554 | sd_id128_t uuid; | |
2555 | int r; | |
2556 | ||
2557 | assert(p); | |
889914ef LP |
2558 | assert(p->encrypt != ENCRYPT_OFF); |
2559 | ||
2560 | log_debug("Encryption mode for partition %" PRIu64 ": %s", p->partno, encrypt_mode_to_string(p->encrypt)); | |
b9df3536 | 2561 | |
0d12936d LP |
2562 | r = dlopen_cryptsetup(); |
2563 | if (r < 0) | |
2564 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
2565 | ||
b9df3536 LP |
2566 | if (asprintf(&dm_name, "luks-repart-%08" PRIx64, random_u64()) < 0) |
2567 | return log_oom(); | |
2568 | ||
2569 | if (ret_volume) { | |
2570 | vol = path_join("/dev/mapper/", dm_name); | |
2571 | if (!vol) | |
2572 | return log_oom(); | |
2573 | } | |
2574 | ||
2575 | r = derive_uuid(p->new_uuid, "luks-uuid", &uuid); | |
2576 | if (r < 0) | |
2577 | return r; | |
2578 | ||
2579 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); | |
2580 | ||
2581 | volume_key = malloc(volume_key_size); | |
2582 | if (!volume_key) | |
2583 | return log_oom(); | |
2584 | ||
2585 | r = genuine_random_bytes(volume_key, volume_key_size, RANDOM_BLOCK); | |
2586 | if (r < 0) | |
2587 | return log_error_errno(r, "Failed to generate volume key: %m"); | |
2588 | ||
0d12936d | 2589 | r = sym_crypt_init(&cd, node); |
b9df3536 LP |
2590 | if (r < 0) |
2591 | return log_error_errno(r, "Failed to allocate libcryptsetup context: %m"); | |
2592 | ||
2593 | cryptsetup_enable_logging(cd); | |
2594 | ||
0d12936d | 2595 | r = sym_crypt_format(cd, |
b9df3536 LP |
2596 | CRYPT_LUKS2, |
2597 | "aes", | |
2598 | "xts-plain64", | |
2599 | id128_to_uuid_string(uuid, suuid), | |
2600 | volume_key, | |
2601 | volume_key_size, | |
2602 | &(struct crypt_params_luks2) { | |
be9ce018 | 2603 | .label = strempty(p->new_label), |
b9df3536 LP |
2604 | .sector_size = 512U, |
2605 | }); | |
2606 | if (r < 0) | |
2607 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
2608 | ||
889914ef LP |
2609 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
2610 | r = sym_crypt_keyslot_add_by_volume_key( | |
2611 | cd, | |
2612 | CRYPT_ANY_SLOT, | |
2613 | volume_key, | |
2614 | volume_key_size, | |
2615 | strempty(arg_key), | |
2616 | arg_key_size); | |
2617 | if (r < 0) | |
2618 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
2619 | } | |
2620 | ||
2621 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
2622 | #if HAVE_TPM2 | |
2623 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; | |
2624 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
2625 | _cleanup_(erase_and_freep) void *secret = NULL; | |
2626 | _cleanup_free_ void *blob = NULL, *hash = NULL; | |
2627 | size_t secret_size, blob_size, hash_size; | |
2628 | int keyslot; | |
2629 | ||
2630 | r = tpm2_seal(arg_tpm2_device, arg_tpm2_pcr_mask, &secret, &secret_size, &blob, &blob_size, &hash, &hash_size); | |
2631 | if (r < 0) | |
2632 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
2633 | ||
2634 | r = base64mem(secret, secret_size, &base64_encoded); | |
2635 | if (r < 0) | |
2636 | return log_error_errno(r, "Failed to base64 encode secret key: %m"); | |
2637 | ||
2638 | r = cryptsetup_set_minimal_pbkdf(cd); | |
2639 | if (r < 0) | |
2640 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
2641 | ||
2642 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
2643 | cd, | |
2644 | CRYPT_ANY_SLOT, | |
2645 | volume_key, | |
2646 | volume_key_size, | |
2647 | base64_encoded, | |
2648 | strlen(base64_encoded)); | |
2649 | if (keyslot < 0) | |
2650 | return log_error_errno(keyslot, "Failed to add new TPM2 key to %s: %m", node); | |
2651 | ||
2652 | r = tpm2_make_luks2_json(keyslot, arg_tpm2_pcr_mask, blob, blob_size, hash, hash_size, &v); | |
2653 | if (r < 0) | |
2654 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
2655 | ||
2656 | r = cryptsetup_add_token_json(cd, v); | |
2657 | if (r < 0) | |
2658 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
2659 | #else | |
2660 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
2661 | "Support for TPM2 enrollment not enabled."); | |
2662 | #endif | |
2663 | } | |
b9df3536 | 2664 | |
0d12936d | 2665 | r = sym_crypt_activate_by_volume_key( |
b9df3536 LP |
2666 | cd, |
2667 | dm_name, | |
2668 | volume_key, | |
2669 | volume_key_size, | |
2670 | arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0); | |
2671 | if (r < 0) | |
2672 | return log_error_errno(r, "Failed to activate LUKS superblock: %m"); | |
2673 | ||
2674 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
2675 | ||
2676 | if (ret_fd) { | |
2677 | _cleanup_close_ int dev_fd = -1; | |
2678 | ||
2679 | dev_fd = open(vol, O_RDWR|O_CLOEXEC|O_NOCTTY); | |
2680 | if (dev_fd < 0) | |
2681 | return log_error_errno(errno, "Failed to open LUKS volume '%s': %m", vol); | |
2682 | ||
2683 | *ret_fd = TAKE_FD(dev_fd); | |
2684 | } | |
2685 | ||
2686 | if (ret_cd) | |
2687 | *ret_cd = TAKE_PTR(cd); | |
2688 | if (ret_volume) | |
2689 | *ret_volume = TAKE_PTR(vol); | |
2690 | ||
2691 | return 0; | |
3dd8ae5c | 2692 | #else |
2693 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot encrypt: %m"); | |
2694 | #endif | |
b9df3536 LP |
2695 | } |
2696 | ||
2697 | static int deactivate_luks(struct crypt_device *cd, const char *node) { | |
3dd8ae5c | 2698 | #if HAVE_LIBCRYPTSETUP |
b9df3536 LP |
2699 | int r; |
2700 | ||
2701 | if (!cd) | |
2702 | return 0; | |
2703 | ||
2704 | assert(node); | |
2705 | ||
2706 | /* udev or so might access out block device in the background while we are done. Let's hence force | |
2707 | * detach the volume. We sync'ed before, hence this should be safe. */ | |
2708 | ||
0d12936d | 2709 | r = sym_crypt_deactivate_by_name(cd, basename(node), CRYPT_DEACTIVATE_FORCE); |
b9df3536 LP |
2710 | if (r < 0) |
2711 | return log_error_errno(r, "Failed to deactivate LUKS device: %m"); | |
2712 | ||
2713 | return 1; | |
3dd8ae5c | 2714 | #else |
2715 | return 0; | |
2716 | #endif | |
b9df3536 LP |
2717 | } |
2718 | ||
757bc2e4 LP |
2719 | static int context_copy_blocks(Context *context) { |
2720 | Partition *p; | |
b9df3536 | 2721 | int whole_fd = -1, r; |
757bc2e4 LP |
2722 | |
2723 | assert(context); | |
2724 | ||
2725 | /* Copy in file systems on the block level */ | |
2726 | ||
2727 | LIST_FOREACH(partitions, p, context->partitions) { | |
0d12936d | 2728 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
b9df3536 LP |
2729 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
2730 | _cleanup_free_ char *encrypted = NULL; | |
2731 | _cleanup_close_ int encrypted_dev_fd = -1; | |
757bc2e4 | 2732 | char buf[FORMAT_BYTES_MAX]; |
b9df3536 | 2733 | int target_fd; |
757bc2e4 LP |
2734 | |
2735 | if (p->copy_blocks_fd < 0) | |
2736 | continue; | |
2737 | ||
2738 | if (p->dropped) | |
2739 | continue; | |
2740 | ||
2741 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
2742 | continue; | |
2743 | ||
2744 | assert(p->new_size != UINT64_MAX); | |
2745 | assert(p->copy_blocks_size != UINT64_MAX); | |
2746 | assert(p->new_size >= p->copy_blocks_size); | |
2747 | ||
b9df3536 LP |
2748 | if (whole_fd < 0) |
2749 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
2750 | ||
889914ef | 2751 | if (p->encrypt != ENCRYPT_OFF) { |
b9df3536 LP |
2752 | r = loop_device_make(whole_fd, O_RDWR, p->offset, p->new_size, 0, &d); |
2753 | if (r < 0) | |
2754 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); | |
2755 | ||
2756 | r = loop_device_flock(d, LOCK_EX); | |
2757 | if (r < 0) | |
2758 | return log_error_errno(r, "Failed to lock loopback device: %m"); | |
2759 | ||
2760 | r = partition_encrypt(p, d->node, &cd, &encrypted, &encrypted_dev_fd); | |
2761 | if (r < 0) | |
2762 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
757bc2e4 | 2763 | |
b9df3536 LP |
2764 | if (flock(encrypted_dev_fd, LOCK_EX) < 0) |
2765 | return log_error_errno(errno, "Failed to lock LUKS device: %m"); | |
2766 | ||
2767 | target_fd = encrypted_dev_fd; | |
2768 | } else { | |
2769 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
2770 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
2771 | ||
2772 | target_fd = whole_fd; | |
2773 | } | |
757bc2e4 | 2774 | |
5b5109e2 | 2775 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", p->copy_blocks_path, format_bytes(buf, sizeof(buf), p->copy_blocks_size), p->partno); |
757bc2e4 | 2776 | |
b9df3536 | 2777 | r = copy_bytes_full(p->copy_blocks_fd, target_fd, p->copy_blocks_size, 0, NULL, NULL, NULL, NULL); |
757bc2e4 LP |
2778 | if (r < 0) |
2779 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
2780 | ||
b9df3536 LP |
2781 | if (fsync(target_fd) < 0) |
2782 | return log_error_errno(r, "Failed to synchronize copied data blocks: %m"); | |
2783 | ||
889914ef | 2784 | if (p->encrypt != ENCRYPT_OFF) { |
b9df3536 LP |
2785 | encrypted_dev_fd = safe_close(encrypted_dev_fd); |
2786 | ||
2787 | r = deactivate_luks(cd, encrypted); | |
2788 | if (r < 0) | |
2789 | return r; | |
2790 | ||
0d12936d | 2791 | sym_crypt_free(cd); |
b9df3536 LP |
2792 | cd = NULL; |
2793 | ||
2794 | r = loop_device_sync(d); | |
2795 | if (r < 0) | |
2796 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
2797 | } | |
2798 | ||
757bc2e4 LP |
2799 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
2800 | } | |
2801 | ||
2802 | return 0; | |
2803 | } | |
2804 | ||
8a794850 LP |
2805 | static int do_copy_files(Partition *p, const char *fs) { |
2806 | char **source, **target; | |
2807 | int r; | |
2808 | ||
2809 | assert(p); | |
2810 | assert(fs); | |
2811 | ||
2812 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
2813 | _cleanup_close_ int sfd = -1, pfd = -1, tfd = -1; | |
8a794850 LP |
2814 | |
2815 | sfd = chase_symlinks_and_open(*source, arg_root, CHASE_PREFIX_ROOT|CHASE_WARN, O_CLOEXEC|O_NOCTTY, NULL); | |
2816 | if (sfd < 0) | |
2817 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
2818 | ||
2819 | r = fd_verify_regular(sfd); | |
2820 | if (r < 0) { | |
2821 | if (r != -EISDIR) | |
2822 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
2823 | ||
2824 | /* We are looking at a directory */ | |
2825 | tfd = chase_symlinks_and_open(*target, fs, CHASE_PREFIX_ROOT|CHASE_WARN, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); | |
2826 | if (tfd < 0) { | |
f21a3a82 LP |
2827 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
2828 | ||
8a794850 LP |
2829 | if (tfd != -ENOENT) |
2830 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
2831 | ||
f21a3a82 LP |
2832 | r = path_extract_filename(*target, &fn); |
2833 | if (r < 0) | |
2834 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
2835 | ||
2836 | r = path_extract_directory(*target, &dn); | |
2837 | if (r < 0) | |
2838 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
2839 | ||
8a794850 LP |
2840 | r = mkdir_p_root(fs, dn, UID_INVALID, GID_INVALID, 0755); |
2841 | if (r < 0) | |
2842 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
2843 | ||
2844 | pfd = chase_symlinks_and_open(dn, fs, CHASE_PREFIX_ROOT|CHASE_WARN, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); | |
2845 | if (pfd < 0) | |
2846 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
2847 | ||
652d9040 LP |
2848 | r = copy_tree_at( |
2849 | sfd, ".", | |
6020d00d | 2850 | pfd, fn, |
652d9040 LP |
2851 | UID_INVALID, GID_INVALID, |
2852 | COPY_REFLINK|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS); | |
8a794850 | 2853 | } else |
652d9040 LP |
2854 | r = copy_tree_at( |
2855 | sfd, ".", | |
2856 | tfd, ".", | |
2857 | UID_INVALID, GID_INVALID, | |
2858 | COPY_REFLINK|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS); | |
8a794850 | 2859 | if (r < 0) |
554a2b64 | 2860 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 2861 | } else { |
f21a3a82 LP |
2862 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
2863 | ||
8a794850 LP |
2864 | /* We are looking at a regular file */ |
2865 | ||
f21a3a82 LP |
2866 | r = path_extract_filename(*target, &fn); |
2867 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
2868 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
2869 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
2870 | if (r < 0) | |
2871 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
2872 | ||
2873 | r = path_extract_directory(*target, &dn); | |
2874 | if (r < 0) | |
2875 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
2876 | ||
8a794850 LP |
2877 | r = mkdir_p_root(fs, dn, UID_INVALID, GID_INVALID, 0755); |
2878 | if (r < 0) | |
2879 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
2880 | ||
2881 | pfd = chase_symlinks_and_open(dn, fs, CHASE_PREFIX_ROOT|CHASE_WARN, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); | |
2882 | if (pfd < 0) | |
a0ff9971 | 2883 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 2884 | |
e2819067 | 2885 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
2886 | if (tfd < 0) |
2887 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
2888 | ||
2889 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_SIGINT); | |
2890 | if (r < 0) | |
554a2b64 | 2891 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 LP |
2892 | |
2893 | (void) copy_xattr(sfd, tfd); | |
2894 | (void) copy_access(sfd, tfd); | |
2895 | (void) copy_times(sfd, tfd, 0); | |
2896 | } | |
2897 | } | |
2898 | ||
2899 | return 0; | |
2900 | } | |
2901 | ||
d83d8048 LP |
2902 | static int do_make_directories(Partition *p, const char *fs) { |
2903 | char **d; | |
2904 | int r; | |
2905 | ||
2906 | assert(p); | |
2907 | assert(fs); | |
2908 | ||
2909 | STRV_FOREACH(d, p->make_directories) { | |
2910 | ||
2911 | r = mkdir_p_root(fs, *d, UID_INVALID, GID_INVALID, 0755); | |
2912 | if (r < 0) | |
2913 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
2914 | } | |
2915 | ||
2916 | return 0; | |
2917 | } | |
2918 | ||
2919 | static int partition_populate(Partition *p, const char *node) { | |
8a794850 LP |
2920 | int r; |
2921 | ||
2922 | assert(p); | |
2923 | assert(node); | |
2924 | ||
d83d8048 | 2925 | if (strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
8a794850 LP |
2926 | return 0; |
2927 | ||
2928 | log_info("Populating partition %" PRIu64 " with files.", p->partno); | |
2929 | ||
2930 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
2931 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
2932 | * detached mount propagation. */ | |
2933 | ||
2934 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
2935 | if (r < 0) | |
2936 | return r; | |
2937 | if (r == 0) { | |
2938 | static const char fs[] = "/run/systemd/mount-root"; | |
2939 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
2940 | ||
2941 | r = mkdir_p(fs, 0700); | |
2942 | if (r < 0) { | |
2943 | log_error_errno(r, "Failed to create mount point: %m"); | |
2944 | _exit(EXIT_FAILURE); | |
2945 | } | |
2946 | ||
511a8cfe | 2947 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
2948 | _exit(EXIT_FAILURE); |
2949 | ||
2950 | if (do_copy_files(p, fs) < 0) | |
2951 | _exit(EXIT_FAILURE); | |
2952 | ||
d83d8048 LP |
2953 | if (do_make_directories(p, fs) < 0) |
2954 | _exit(EXIT_FAILURE); | |
2955 | ||
8a794850 LP |
2956 | r = syncfs_path(AT_FDCWD, fs); |
2957 | if (r < 0) { | |
2958 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
2959 | _exit(EXIT_FAILURE); | |
2960 | } | |
2961 | ||
2962 | _exit(EXIT_SUCCESS); | |
2963 | } | |
2964 | ||
2965 | log_info("Successfully populated partition %" PRIu64 " with files.", p->partno); | |
2966 | return 0; | |
2967 | } | |
2968 | ||
53171c04 LP |
2969 | static int context_mkfs(Context *context) { |
2970 | Partition *p; | |
2971 | int fd = -1, r; | |
2972 | ||
2973 | assert(context); | |
2974 | ||
2975 | /* Make a file system */ | |
2976 | ||
2977 | LIST_FOREACH(partitions, p, context->partitions) { | |
0d12936d | 2978 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
53171c04 | 2979 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
b9df3536 LP |
2980 | _cleanup_free_ char *encrypted = NULL; |
2981 | _cleanup_close_ int encrypted_dev_fd = -1; | |
2982 | const char *fsdev; | |
53171c04 LP |
2983 | sd_id128_t fs_uuid; |
2984 | ||
2985 | if (p->dropped) | |
2986 | continue; | |
2987 | ||
2988 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
2989 | continue; | |
2990 | ||
2991 | if (!p->format) | |
2992 | continue; | |
2993 | ||
2994 | assert(p->offset != UINT64_MAX); | |
2995 | assert(p->new_size != UINT64_MAX); | |
2996 | ||
2997 | if (fd < 0) | |
2998 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
2999 | ||
3000 | /* Loopback block devices are not only useful to turn regular files into block devices, but | |
3001 | * also to cut out sections of block devices into new block devices. */ | |
3002 | ||
3003 | r = loop_device_make(fd, O_RDWR, p->offset, p->new_size, 0, &d); | |
3004 | if (r < 0) | |
5b5109e2 | 3005 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); |
53171c04 LP |
3006 | |
3007 | r = loop_device_flock(d, LOCK_EX); | |
3008 | if (r < 0) | |
3009 | return log_error_errno(r, "Failed to lock loopback device: %m"); | |
3010 | ||
889914ef | 3011 | if (p->encrypt != ENCRYPT_OFF) { |
b9df3536 LP |
3012 | r = partition_encrypt(p, d->node, &cd, &encrypted, &encrypted_dev_fd); |
3013 | if (r < 0) | |
3014 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
3015 | ||
3016 | if (flock(encrypted_dev_fd, LOCK_EX) < 0) | |
3017 | return log_error_errno(errno, "Failed to lock LUKS device: %m"); | |
3018 | ||
3019 | fsdev = encrypted; | |
3020 | } else | |
3021 | fsdev = d->node; | |
3022 | ||
53171c04 LP |
3023 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
3024 | ||
3025 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", | |
3026 | * keyed off the partition UUID. */ | |
3027 | r = derive_uuid(p->new_uuid, "file-system-uuid", &fs_uuid); | |
3028 | if (r < 0) | |
3029 | return r; | |
3030 | ||
be9ce018 | 3031 | r = make_filesystem(fsdev, p->format, strempty(p->new_label), fs_uuid, arg_discard); |
b9df3536 LP |
3032 | if (r < 0) { |
3033 | encrypted_dev_fd = safe_close(encrypted_dev_fd); | |
3034 | (void) deactivate_luks(cd, encrypted); | |
53171c04 | 3035 | return r; |
b9df3536 | 3036 | } |
53171c04 LP |
3037 | |
3038 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
3039 | ||
b9df3536 | 3040 | /* The file system is now created, no need to delay udev further */ |
889914ef | 3041 | if (p->encrypt != ENCRYPT_OFF) |
b9df3536 LP |
3042 | if (flock(encrypted_dev_fd, LOCK_UN) < 0) |
3043 | return log_error_errno(errno, "Failed to unlock LUKS device: %m"); | |
3044 | ||
d83d8048 | 3045 | r = partition_populate(p, fsdev); |
b9df3536 LP |
3046 | if (r < 0) { |
3047 | encrypted_dev_fd = safe_close(encrypted_dev_fd); | |
3048 | (void) deactivate_luks(cd, encrypted); | |
8a794850 | 3049 | return r; |
b9df3536 LP |
3050 | } |
3051 | ||
3052 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and | |
3053 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
3054 | * the disk. */ | |
3055 | ||
889914ef | 3056 | if (p->encrypt != ENCRYPT_OFF) { |
b9df3536 LP |
3057 | if (fsync(encrypted_dev_fd) < 0) |
3058 | return log_error_errno(r, "Failed to synchronize LUKS volume: %m"); | |
3059 | encrypted_dev_fd = safe_close(encrypted_dev_fd); | |
3060 | ||
3061 | r = deactivate_luks(cd, encrypted); | |
3062 | if (r < 0) | |
3063 | return r; | |
3064 | ||
0d12936d | 3065 | sym_crypt_free(cd); |
b9df3536 LP |
3066 | cd = NULL; |
3067 | } | |
8a794850 | 3068 | |
53171c04 LP |
3069 | r = loop_device_sync(d); |
3070 | if (r < 0) | |
3071 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3072 | } | |
3073 | ||
3074 | return 0; | |
3075 | } | |
3076 | ||
e594a3b1 LP |
3077 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
3078 | struct { | |
3079 | sd_id128_t type_uuid; | |
3080 | uint64_t counter; | |
3081 | } _packed_ plaintext = {}; | |
3082 | union { | |
3083 | unsigned char md[SHA256_DIGEST_LENGTH]; | |
3084 | sd_id128_t id; | |
3085 | } result; | |
3086 | ||
3087 | uint64_t k = 0; | |
3088 | Partition *q; | |
3089 | int r; | |
3090 | ||
3091 | assert(context); | |
3092 | assert(p); | |
3093 | assert(ret); | |
3094 | ||
3095 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
3096 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
3097 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
3098 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
3099 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
3100 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
3101 | * second and later partition of the same type) if we have more than one partition of the same | |
3102 | * time. Or in other words: | |
3103 | * | |
3104 | * With: | |
3105 | * SEED := /etc/machine-id | |
3106 | * | |
3107 | * If first partition instance of type TYPE_UUID: | |
3108 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
3109 | * | |
3110 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
3111 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
3112 | */ | |
3113 | ||
3114 | LIST_FOREACH(partitions, q, context->partitions) { | |
3115 | if (p == q) | |
3116 | break; | |
3117 | ||
3118 | if (!sd_id128_equal(p->type_uuid, q->type_uuid)) | |
3119 | continue; | |
3120 | ||
3121 | k++; | |
3122 | } | |
3123 | ||
3124 | plaintext.type_uuid = p->type_uuid; | |
3125 | plaintext.counter = htole64(k); | |
3126 | ||
3127 | if (!HMAC(EVP_sha256(), | |
3128 | &context->seed, sizeof(context->seed), | |
3129 | (const unsigned char*) &plaintext, k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
3130 | result.md, NULL)) | |
3131 | return log_error_errno(SYNTHETIC_ERRNO(ENOTRECOVERABLE), "SHA256 calculation failed."); | |
3132 | ||
3133 | /* Take the first half, mark it as v4 UUID */ | |
3134 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
3135 | result.id = id128_make_v4_uuid(result.id); | |
3136 | ||
3137 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
3138 | LIST_FOREACH(partitions, q, context->partitions) { | |
3139 | if (p == q) | |
3140 | continue; | |
3141 | ||
580f48cc | 3142 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 3143 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
3144 | |
3145 | r = sd_id128_randomize(&result.id); | |
3146 | if (r < 0) | |
3147 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
3148 | ||
3149 | break; | |
3150 | } | |
3151 | } | |
3152 | ||
3153 | *ret = result.id; | |
3154 | return 0; | |
3155 | } | |
3156 | ||
3157 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
3158 | _cleanup_free_ char *label = NULL; | |
3159 | const char *prefix; | |
3160 | unsigned k = 1; | |
3161 | ||
3162 | assert(context); | |
3163 | assert(p); | |
3164 | assert(ret); | |
3165 | ||
3166 | prefix = gpt_partition_type_uuid_to_string(p->type_uuid); | |
3167 | if (!prefix) | |
3168 | prefix = "linux"; | |
3169 | ||
3170 | for (;;) { | |
3171 | const char *ll = label ?: prefix; | |
3172 | bool retry = false; | |
3173 | Partition *q; | |
3174 | ||
3175 | LIST_FOREACH(partitions, q, context->partitions) { | |
3176 | if (p == q) | |
3177 | break; | |
3178 | ||
3179 | if (streq_ptr(ll, q->current_label) || | |
3180 | streq_ptr(ll, q->new_label)) { | |
3181 | retry = true; | |
3182 | break; | |
3183 | } | |
3184 | } | |
3185 | ||
3186 | if (!retry) | |
3187 | break; | |
3188 | ||
3189 | label = mfree(label); | |
e594a3b1 LP |
3190 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
3191 | return log_oom(); | |
3192 | } | |
3193 | ||
3194 | if (!label) { | |
3195 | label = strdup(prefix); | |
3196 | if (!label) | |
3197 | return log_oom(); | |
3198 | } | |
3199 | ||
3200 | *ret = TAKE_PTR(label); | |
3201 | return 0; | |
3202 | } | |
3203 | ||
3204 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
3205 | Partition *p; | |
3206 | int r; | |
3207 | ||
3208 | assert(context); | |
3209 | ||
3210 | LIST_FOREACH(partitions, p, context->partitions) { | |
e594a3b1 LP |
3211 | /* Never touch foreign partitions */ |
3212 | if (PARTITION_IS_FOREIGN(p)) { | |
3213 | p->new_uuid = p->current_uuid; | |
3214 | ||
3215 | if (p->current_label) { | |
78eee6ce LP |
3216 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
3217 | if (r < 0) | |
3218 | return r; | |
e594a3b1 LP |
3219 | } |
3220 | ||
3221 | continue; | |
3222 | } | |
3223 | ||
3224 | if (!sd_id128_is_null(p->current_uuid)) | |
3225 | p->new_uuid = p->current_uuid; /* Never change initialized UUIDs */ | |
12963533 TH |
3226 | else if (sd_id128_is_null(p->new_uuid)) { |
3227 | /* Not explicitly set by user! */ | |
e594a3b1 LP |
3228 | r = partition_acquire_uuid(context, p, &p->new_uuid); |
3229 | if (r < 0) | |
3230 | return r; | |
3231 | } | |
3232 | ||
3233 | if (!isempty(p->current_label)) { | |
78eee6ce LP |
3234 | /* never change initialized labels */ |
3235 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
3236 | if (r < 0) | |
3237 | return r; | |
12963533 TH |
3238 | } else if (!p->new_label) { |
3239 | /* Not explicitly set by user! */ | |
3240 | ||
e594a3b1 LP |
3241 | r = partition_acquire_label(context, p, &p->new_label); |
3242 | if (r < 0) | |
3243 | return r; | |
3244 | } | |
3245 | } | |
3246 | ||
3247 | return 0; | |
3248 | } | |
3249 | ||
e73309c5 LP |
3250 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
3251 | _cleanup_free_ char *a = NULL; | |
3252 | ||
3253 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
3254 | uint64_t bit = UINT64_C(1) << i; | |
3255 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
3256 | ||
3257 | if (!FLAGS_SET(flags, bit)) | |
3258 | continue; | |
3259 | ||
3260 | xsprintf(buf, "%u", i); | |
3261 | if (!strextend_with_separator(&a, ",", buf)) | |
3262 | return -ENOMEM; | |
3263 | } | |
3264 | ||
3265 | return fdisk_partition_set_attrs(q, a); | |
3266 | } | |
3267 | ||
1c41c1dc LP |
3268 | static uint64_t partition_merge_flags(Partition *p) { |
3269 | uint64_t f; | |
3270 | ||
3271 | assert(p); | |
3272 | ||
3273 | f = p->gpt_flags; | |
3274 | ||
ff0771bf LP |
3275 | if (p->no_auto >= 0) { |
3276 | if (gpt_partition_type_knows_no_auto(p->type_uuid)) | |
3277 | SET_FLAG(f, GPT_FLAG_NO_AUTO, p->no_auto); | |
3278 | else { | |
3279 | char buffer[ID128_UUID_STRING_MAX]; | |
3280 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", | |
3281 | yes_no(p->no_auto), | |
3282 | gpt_partition_type_uuid_to_string_harder(p->type_uuid, buffer)); | |
3283 | } | |
3284 | } | |
3285 | ||
1c41c1dc LP |
3286 | if (p->read_only >= 0) { |
3287 | if (gpt_partition_type_knows_read_only(p->type_uuid)) | |
3288 | SET_FLAG(f, GPT_FLAG_READ_ONLY, p->read_only); | |
3289 | else { | |
3290 | char buffer[ID128_UUID_STRING_MAX]; | |
3291 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", | |
3292 | yes_no(p->read_only), | |
3293 | gpt_partition_type_uuid_to_string_harder(p->type_uuid, buffer)); | |
3294 | } | |
3295 | } | |
3296 | ||
3297 | if (p->growfs >= 0) { | |
3298 | if (gpt_partition_type_knows_growfs(p->type_uuid)) | |
3299 | SET_FLAG(f, GPT_FLAG_GROWFS, p->growfs); | |
3300 | else { | |
3301 | char buffer[ID128_UUID_STRING_MAX]; | |
3302 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", | |
3303 | yes_no(p->growfs), | |
3304 | gpt_partition_type_uuid_to_string_harder(p->type_uuid, buffer)); | |
3305 | } | |
3306 | } | |
3307 | ||
3308 | return f; | |
3309 | } | |
3310 | ||
f28d4f42 | 3311 | static int context_mangle_partitions(Context *context) { |
e594a3b1 | 3312 | Partition *p; |
f28d4f42 | 3313 | int r; |
e594a3b1 LP |
3314 | |
3315 | assert(context); | |
3316 | ||
e594a3b1 LP |
3317 | LIST_FOREACH(partitions, p, context->partitions) { |
3318 | if (p->dropped) | |
3319 | continue; | |
3320 | ||
3321 | assert(p->new_size != UINT64_MAX); | |
3322 | assert(p->offset != UINT64_MAX); | |
3323 | assert(p->partno != UINT64_MAX); | |
3324 | ||
3325 | if (PARTITION_EXISTS(p)) { | |
3326 | bool changed = false; | |
3327 | ||
3328 | assert(p->current_partition); | |
3329 | ||
3330 | if (p->new_size != p->current_size) { | |
3331 | assert(p->new_size >= p->current_size); | |
3332 | assert(p->new_size % 512 == 0); | |
3333 | ||
3334 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
3335 | if (r < 0) | |
3336 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
3337 | ||
3338 | r = fdisk_partition_set_size(p->current_partition, p->new_size / 512); | |
3339 | if (r < 0) | |
3340 | return log_error_errno(r, "Failed to grow partition: %m"); | |
3341 | ||
3342 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
3343 | changed = true; | |
3344 | } | |
3345 | ||
3346 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
3347 | char buf[ID128_UUID_STRING_MAX]; | |
3348 | ||
3349 | assert(!sd_id128_is_null(p->new_uuid)); | |
3350 | ||
3351 | r = fdisk_partition_set_uuid(p->current_partition, id128_to_uuid_string(p->new_uuid, buf)); | |
3352 | if (r < 0) | |
3353 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
3354 | ||
3355 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
3356 | changed = true; | |
3357 | } | |
3358 | ||
3359 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 3360 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
3361 | if (r < 0) |
3362 | return log_error_errno(r, "Failed to set partition label: %m"); | |
3363 | ||
3364 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
3365 | changed = true; | |
3366 | } | |
3367 | ||
3368 | if (changed) { | |
3369 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
3370 | ||
3371 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
3372 | if (r < 0) | |
3373 | return log_error_errno(r, "Failed to update partition: %m"); | |
3374 | } | |
3375 | } else { | |
3376 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
3377 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
3378 | char ids[ID128_UUID_STRING_MAX]; | |
3379 | ||
3380 | assert(!p->new_partition); | |
3381 | assert(p->offset % 512 == 0); | |
3382 | assert(p->new_size % 512 == 0); | |
3383 | assert(!sd_id128_is_null(p->new_uuid)); | |
be9ce018 | 3384 | assert(p->new_label); |
e594a3b1 LP |
3385 | |
3386 | t = fdisk_new_parttype(); | |
3387 | if (!t) | |
3388 | return log_oom(); | |
3389 | ||
3390 | r = fdisk_parttype_set_typestr(t, id128_to_uuid_string(p->type_uuid, ids)); | |
3391 | if (r < 0) | |
3392 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
3393 | ||
3394 | q = fdisk_new_partition(); | |
3395 | if (!q) | |
3396 | return log_oom(); | |
3397 | ||
3398 | r = fdisk_partition_set_type(q, t); | |
3399 | if (r < 0) | |
3400 | return log_error_errno(r, "Failed to set partition type: %m"); | |
3401 | ||
3402 | r = fdisk_partition_size_explicit(q, true); | |
3403 | if (r < 0) | |
3404 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
3405 | ||
3406 | r = fdisk_partition_set_start(q, p->offset / 512); | |
3407 | if (r < 0) | |
3408 | return log_error_errno(r, "Failed to position partition: %m"); | |
3409 | ||
3410 | r = fdisk_partition_set_size(q, p->new_size / 512); | |
3411 | if (r < 0) | |
3412 | return log_error_errno(r, "Failed to grow partition: %m"); | |
3413 | ||
3414 | r = fdisk_partition_set_partno(q, p->partno); | |
3415 | if (r < 0) | |
3416 | return log_error_errno(r, "Failed to set partition number: %m"); | |
3417 | ||
3418 | r = fdisk_partition_set_uuid(q, id128_to_uuid_string(p->new_uuid, ids)); | |
3419 | if (r < 0) | |
3420 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
3421 | ||
be9ce018 | 3422 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
3423 | if (r < 0) |
3424 | return log_error_errno(r, "Failed to set partition label: %m"); | |
3425 | ||
ff0771bf | 3426 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 3427 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
3428 | if (r < 0) |
3429 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
3430 | ||
5b5109e2 | 3431 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
3432 | |
3433 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
3434 | if (r < 0) | |
3435 | return log_error_errno(r, "Failed to add partition: %m"); | |
3436 | ||
3437 | assert(!p->new_partition); | |
3438 | p->new_partition = TAKE_PTR(q); | |
3439 | } | |
3440 | } | |
3441 | ||
f28d4f42 LP |
3442 | return 0; |
3443 | } | |
3444 | ||
3445 | static int context_write_partition_table( | |
3446 | Context *context, | |
3447 | const char *node, | |
3448 | bool from_scratch) { | |
3449 | ||
3450 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; | |
3451 | int capable, r; | |
3452 | ||
3453 | assert(context); | |
3454 | ||
3455 | if (arg_pretty > 0 || | |
3456 | (arg_pretty < 0 && isatty(STDOUT_FILENO) > 0) || | |
6a01ea4a | 3457 | !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) { |
f28d4f42 LP |
3458 | |
3459 | (void) context_dump_partitions(context, node); | |
3460 | ||
3461 | putc('\n', stdout); | |
3462 | ||
6a01ea4a | 3463 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
f28d4f42 LP |
3464 | (void) context_dump_partition_bar(context, node); |
3465 | putc('\n', stdout); | |
3466 | fflush(stdout); | |
3467 | } | |
3468 | ||
3469 | if (!from_scratch && !context_changed(context)) { | |
3470 | log_info("No changes."); | |
3471 | return 0; | |
3472 | } | |
3473 | ||
3474 | if (arg_dry_run) { | |
3475 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
3476 | return 0; | |
3477 | } | |
3478 | ||
3479 | log_info("Applying changes."); | |
3480 | ||
3481 | if (from_scratch) { | |
81873a6b LP |
3482 | r = context_wipe_range(context, 0, context->total); |
3483 | if (r < 0) | |
3484 | return r; | |
3485 | ||
3486 | log_info("Wiped block device."); | |
3487 | ||
f28d4f42 LP |
3488 | r = context_discard_range(context, 0, context->total); |
3489 | if (r == -EOPNOTSUPP) | |
5b5109e2 | 3490 | log_info("Storage does not support discard, not discarding entire block device data."); |
f28d4f42 LP |
3491 | else if (r < 0) |
3492 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
3493 | else if (r > 0) | |
3494 | log_info("Discarded entire block device."); | |
3495 | } | |
3496 | ||
3497 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
3498 | if (r < 0) | |
3499 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
3500 | ||
3501 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
3502 | * gaps between partitions, just to be sure. */ | |
3503 | r = context_wipe_and_discard(context, from_scratch); | |
3504 | if (r < 0) | |
3505 | return r; | |
3506 | ||
3507 | r = context_copy_blocks(context); | |
3508 | if (r < 0) | |
3509 | return r; | |
3510 | ||
3511 | r = context_mkfs(context); | |
3512 | if (r < 0) | |
3513 | return r; | |
3514 | ||
3515 | r = context_mangle_partitions(context); | |
3516 | if (r < 0) | |
3517 | return r; | |
3518 | ||
e594a3b1 LP |
3519 | log_info("Writing new partition table."); |
3520 | ||
3521 | r = fdisk_write_disklabel(context->fdisk_context); | |
3522 | if (r < 0) | |
3523 | return log_error_errno(r, "Failed to write partition table: %m"); | |
3524 | ||
911ba624 | 3525 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
3526 | if (capable == -ENOTBLK) |
3527 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
3528 | else if (capable < 0) | |
911ba624 | 3529 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 3530 | else if (capable > 0) { |
e594a3b1 LP |
3531 | log_info("Telling kernel to reread partition table."); |
3532 | ||
3533 | if (from_scratch) | |
3534 | r = fdisk_reread_partition_table(context->fdisk_context); | |
3535 | else | |
3536 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
3537 | if (r < 0) | |
3538 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
3539 | } else | |
3540 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
3541 | ||
3542 | log_info("All done."); | |
3543 | ||
3544 | return 0; | |
3545 | } | |
3546 | ||
3547 | static int context_read_seed(Context *context, const char *root) { | |
3548 | int r; | |
3549 | ||
3550 | assert(context); | |
3551 | ||
3552 | if (!sd_id128_is_null(context->seed)) | |
3553 | return 0; | |
3554 | ||
3555 | if (!arg_randomize) { | |
3556 | _cleanup_close_ int fd = -1; | |
3557 | ||
3558 | fd = chase_symlinks_and_open("/etc/machine-id", root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC, NULL); | |
3559 | if (fd == -ENOENT) | |
3560 | log_info("No machine ID set, using randomized partition UUIDs."); | |
3561 | else if (fd < 0) | |
3562 | return log_error_errno(fd, "Failed to determine machine ID of image: %m"); | |
3563 | else { | |
448b782c | 3564 | r = id128_read_fd(fd, ID128_PLAIN_OR_UNINIT, &context->seed); |
e594a3b1 LP |
3565 | if (r == -ENOMEDIUM) |
3566 | log_info("No machine ID set, using randomized partition UUIDs."); | |
3567 | else if (r < 0) | |
3568 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
3569 | ||
3570 | return 0; | |
3571 | } | |
3572 | } | |
3573 | ||
3574 | r = sd_id128_randomize(&context->seed); | |
3575 | if (r < 0) | |
3576 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
3577 | ||
3578 | return 0; | |
3579 | } | |
3580 | ||
3581 | static int context_factory_reset(Context *context, bool from_scratch) { | |
3582 | Partition *p; | |
3583 | size_t n = 0; | |
3584 | int r; | |
3585 | ||
3586 | assert(context); | |
3587 | ||
3588 | if (arg_factory_reset <= 0) | |
3589 | return 0; | |
3590 | ||
3591 | if (from_scratch) /* Nothing to reset if we start from scratch */ | |
3592 | return 0; | |
3593 | ||
3594 | if (arg_dry_run) { | |
3595 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
3596 | return 0; | |
3597 | } | |
3598 | ||
3599 | log_info("Applying factory reset."); | |
3600 | ||
3601 | LIST_FOREACH(partitions, p, context->partitions) { | |
3602 | ||
3603 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
3604 | continue; | |
3605 | ||
3606 | assert(p->partno != UINT64_MAX); | |
3607 | ||
3608 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
3609 | ||
3610 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
3611 | if (r < 0) | |
3612 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
3613 | ||
3614 | n++; | |
3615 | } | |
3616 | ||
3617 | if (n == 0) { | |
3618 | log_info("Factory reset requested, but no partitions to delete found."); | |
3619 | return 0; | |
3620 | } | |
3621 | ||
3622 | r = fdisk_write_disklabel(context->fdisk_context); | |
3623 | if (r < 0) | |
3624 | return log_error_errno(r, "Failed to write disk label: %m"); | |
3625 | ||
3626 | log_info("Successfully deleted %zu partitions.", n); | |
3627 | return 1; | |
3628 | } | |
3629 | ||
3630 | static int context_can_factory_reset(Context *context) { | |
3631 | Partition *p; | |
3632 | ||
3633 | assert(context); | |
3634 | ||
3635 | LIST_FOREACH(partitions, p, context->partitions) | |
3636 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
3637 | return true; | |
3638 | ||
3639 | return false; | |
3640 | } | |
3641 | ||
5c08da58 LP |
3642 | static int resolve_copy_blocks_auto_candidate( |
3643 | dev_t partition_devno, | |
3644 | sd_id128_t partition_type_uuid, | |
3645 | dev_t restrict_devno, | |
3646 | sd_id128_t *ret_uuid) { | |
3647 | ||
3648 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
3649 | _cleanup_free_ char *p = NULL; | |
3650 | _cleanup_close_ int fd = -1; | |
3651 | const char *pttype, *t; | |
3652 | sd_id128_t pt_parsed, u; | |
3653 | blkid_partition pp; | |
3654 | dev_t whole_devno; | |
3655 | blkid_partlist pl; | |
3656 | struct stat st; | |
3657 | int r; | |
3658 | ||
3659 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
3660 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
3661 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
3662 | * one of the two. */ | |
3663 | ||
3664 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
3665 | if (r < 0) | |
3666 | return log_error_errno( | |
3667 | r, | |
3668 | "Unable to determine containing block device of partition %u:%u: %m", | |
3669 | major(partition_devno), minor(partition_devno)); | |
3670 | ||
3671 | if (restrict_devno != (dev_t) -1 && | |
3672 | restrict_devno != whole_devno) | |
3673 | return log_error_errno( | |
3674 | SYNTHETIC_ERRNO(EPERM), | |
3675 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
3676 | major(partition_devno), minor(partition_devno), | |
3677 | major(restrict_devno), minor(restrict_devno)); | |
3678 | ||
3679 | r = device_path_make_major_minor(S_IFBLK, whole_devno, &p); | |
3680 | if (r < 0) | |
3681 | return log_error_errno(r, "Failed to convert block device to device node path: %m"); | |
3682 | ||
3683 | fd = open(p, O_RDONLY|O_CLOEXEC|O_NONBLOCK); | |
3684 | if (fd < 0) | |
3685 | return log_error_errno(r, "Failed to open '%s': %m", p); | |
3686 | ||
3687 | if (fstat(fd, &st) < 0) | |
3688 | return log_error_errno(r, "Failed to stat '%s': %m", p); | |
3689 | ||
3690 | if (!S_ISBLK(st.st_mode) || st.st_rdev != whole_devno) | |
3691 | return log_error_errno( | |
3692 | SYNTHETIC_ERRNO(EPERM), | |
3693 | "Opened and determined block device don't match, refusing."); | |
3694 | ||
3695 | b = blkid_new_probe(); | |
3696 | if (!b) | |
3697 | return log_oom(); | |
3698 | ||
3699 | errno = 0; | |
3700 | r = blkid_probe_set_device(b, fd, 0, 0); | |
3701 | if (r != 0) | |
3702 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
3703 | ||
3704 | (void) blkid_probe_enable_partitions(b, 1); | |
3705 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
3706 | ||
3707 | errno = 0; | |
3708 | r = blkid_do_safeprobe(b); | |
3709 | if (IN_SET(r, -2, 1)) { /* nothing found or ambiguous result */ | |
3710 | log_debug("Didn't find partition table on block device '%s'.", p); | |
3711 | return false; | |
3712 | } | |
3713 | if (r != 0) | |
3714 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
3715 | ||
3716 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
3717 | if (!streq_ptr(pttype, "gpt")) { | |
3718 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
3719 | return false; | |
3720 | } | |
3721 | ||
3722 | errno = 0; | |
3723 | pl = blkid_probe_get_partitions(b); | |
3724 | if (!pl) | |
3725 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
3726 | errno = 0; | |
3727 | ||
3728 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
3729 | if (!pp) { | |
3730 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
3731 | major(partition_devno), minor(partition_devno), p); | |
3732 | return false; | |
3733 | } | |
3734 | ||
3735 | t = blkid_partition_get_type_string(pp); | |
3736 | if (isempty(t)) { | |
3737 | log_debug("Partition %u:%u has no type on '%s'.", | |
3738 | major(partition_devno), minor(partition_devno), p); | |
3739 | return false; | |
3740 | } | |
3741 | ||
3742 | r = sd_id128_from_string(t, &pt_parsed); | |
3743 | if (r < 0) { | |
3744 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
3745 | return false; | |
3746 | } | |
3747 | ||
3748 | if (!sd_id128_equal(pt_parsed, partition_type_uuid)) { | |
3749 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", | |
3750 | major(partition_devno), minor(partition_devno), | |
3751 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type_uuid)); | |
3752 | return false; | |
3753 | } | |
3754 | ||
3755 | t = blkid_partition_get_uuid(pp); | |
3756 | if (isempty(t)) { | |
3757 | log_debug("Partition %u:%u has no UUID.", | |
3758 | major(partition_devno), minor(partition_devno)); | |
3759 | return false; | |
3760 | } | |
3761 | ||
3762 | r = sd_id128_from_string(t, &u); | |
3763 | if (r < 0) { | |
3764 | log_debug_errno(r, "Failed to parse partition UUID \"%s\": %m", t); | |
3765 | return false; | |
3766 | } | |
3767 | ||
3768 | log_debug("Automatically found partition %u:%u of right type " SD_ID128_FORMAT_STR ".", | |
3769 | major(partition_devno), minor(partition_devno), | |
3770 | SD_ID128_FORMAT_VAL(pt_parsed)); | |
3771 | ||
3772 | if (ret_uuid) | |
3773 | *ret_uuid = u; | |
3774 | ||
3775 | return true; | |
3776 | } | |
3777 | ||
3778 | static int find_backing_devno( | |
3779 | const char *path, | |
3780 | const char *root, | |
3781 | dev_t *ret) { | |
3782 | ||
3783 | _cleanup_free_ char *resolved = NULL; | |
3784 | int r; | |
3785 | ||
3786 | assert(path); | |
3787 | ||
3788 | r = chase_symlinks(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); | |
3789 | if (r < 0) | |
3790 | return r; | |
3791 | ||
3792 | r = path_is_mount_point(resolved, NULL, 0); | |
3793 | if (r < 0) | |
3794 | return r; | |
3795 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
3796 | return -ENOENT; | |
3797 | ||
3798 | r = get_block_device(resolved, ret); | |
3799 | if (r < 0) | |
3800 | return r; | |
3801 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
3802 | return -ENOENT; | |
3803 | ||
3804 | return 0; | |
3805 | } | |
3806 | ||
3807 | static int resolve_copy_blocks_auto( | |
3808 | sd_id128_t type_uuid, | |
3809 | const char *root, | |
3810 | dev_t restrict_devno, | |
3811 | char **ret_path, | |
3812 | sd_id128_t *ret_uuid) { | |
3813 | ||
3814 | const char *try1 = NULL, *try2 = NULL; | |
3815 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
3816 | _cleanup_(closedirp) DIR *d = NULL; | |
3817 | sd_id128_t found_uuid = SD_ID128_NULL; | |
3818 | dev_t devno, found = 0; | |
3819 | int r; | |
3820 | ||
3821 | assert(ret_path); | |
3822 | ||
3823 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the | |
3824 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
3825 | * and restrict block device references in the --image= case to loopback block device we set up. | |
3826 | * | |
3827 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
3828 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
3829 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
3830 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
3831 | ||
3832 | if (restrict_devno == 0) | |
3833 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
3834 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
3835 | ||
3836 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching | |
3837 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
3838 | * type matches. */ | |
3839 | ||
3840 | if (gpt_partition_type_is_root(type_uuid)) | |
3841 | try1 = "/"; | |
3842 | else if (gpt_partition_type_is_usr(type_uuid)) | |
3843 | try1 = "/usr/"; | |
3844 | else if (gpt_partition_type_is_root_verity(type_uuid)) | |
3845 | try1 = "/"; | |
3846 | else if (gpt_partition_type_is_usr_verity(type_uuid)) | |
3847 | try1 = "/usr/"; | |
3848 | else if (sd_id128_equal(type_uuid, GPT_ESP)) { | |
3849 | try1 = "/efi/"; | |
3850 | try2 = "/boot/"; | |
3851 | } else if (sd_id128_equal(type_uuid, GPT_XBOOTLDR)) | |
3852 | try1 = "/boot/"; | |
3853 | else | |
3854 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3855 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
3856 | SD_ID128_FORMAT_VAL(type_uuid)); | |
3857 | ||
3858 | r = find_backing_devno(try1, root, &devno); | |
3859 | if (r == -ENOENT && try2) | |
3860 | r = find_backing_devno(try2, root, &devno); | |
3861 | if (r < 0) | |
3862 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
3863 | SD_ID128_FORMAT_VAL(type_uuid)); | |
3864 | ||
3865 | xsprintf_sys_block_path(p, "/slaves", devno); | |
3866 | d = opendir(p); | |
3867 | if (d) { | |
3868 | struct dirent *de; | |
3869 | ||
3870 | for (;;) { | |
3871 | _cleanup_free_ char *q = NULL, *t = NULL; | |
3872 | sd_id128_t u; | |
3873 | dev_t sl; | |
3874 | ||
3875 | errno = 0; | |
3876 | de = readdir_no_dot(d); | |
3877 | if (!de) { | |
3878 | if (errno != 0) | |
3879 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
3880 | ||
3881 | break; | |
3882 | } | |
3883 | ||
3884 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
3885 | continue; | |
3886 | ||
3887 | q = path_join(p, de->d_name, "/dev"); | |
3888 | if (!q) | |
3889 | return log_oom(); | |
3890 | ||
3891 | r = read_one_line_file(q, &t); | |
3892 | if (r < 0) | |
3893 | return log_error_errno(r, "Failed to read %s: %m", q); | |
3894 | ||
3895 | r = parse_dev(t, &sl); | |
3896 | if (r < 0) { | |
3897 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
3898 | continue; | |
3899 | } | |
3900 | if (major(sl) == 0) { | |
3901 | log_debug_errno(r, "Device backing %s is special, ignoring: %m", q); | |
3902 | continue; | |
3903 | } | |
3904 | ||
3905 | r = resolve_copy_blocks_auto_candidate(sl, type_uuid, restrict_devno, &u); | |
3906 | if (r < 0) | |
3907 | return r; | |
3908 | if (r > 0) { | |
3909 | /* We found a matching one! */ | |
3910 | if (found != 0) | |
3911 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
3912 | "Multiple matching partitions found, refusing."); | |
3913 | ||
3914 | found = sl; | |
3915 | found_uuid = u; | |
3916 | } | |
3917 | } | |
3918 | } else if (errno != ENOENT) | |
3919 | return log_error_errno(errno, "Failed open %s: %m", p); | |
3920 | else { | |
3921 | r = resolve_copy_blocks_auto_candidate(devno, type_uuid, restrict_devno, &found_uuid); | |
3922 | if (r < 0) | |
3923 | return r; | |
3924 | if (r > 0) | |
3925 | found = devno; | |
3926 | } | |
3927 | ||
3928 | if (found == 0) | |
3929 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
3930 | "Unable to automatically discover suitable partition to copy blocks from."); | |
3931 | ||
3932 | r = device_path_make_major_minor(S_IFBLK, found, ret_path); | |
3933 | if (r < 0) | |
3934 | return log_error_errno(r, "Failed to convert dev_t to device node path: %m"); | |
3935 | ||
3936 | if (ret_uuid) | |
3937 | *ret_uuid = found_uuid; | |
3938 | ||
3939 | return 0; | |
3940 | } | |
3941 | ||
3942 | static int context_open_copy_block_paths( | |
3943 | Context *context, | |
3944 | const char *root, | |
3945 | dev_t restrict_devno) { | |
3946 | ||
757bc2e4 LP |
3947 | Partition *p; |
3948 | int r; | |
3949 | ||
3950 | assert(context); | |
3951 | ||
3952 | LIST_FOREACH(partitions, p, context->partitions) { | |
3953 | _cleanup_close_ int source_fd = -1; | |
5c08da58 LP |
3954 | _cleanup_free_ char *opened = NULL; |
3955 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
3956 | uint64_t size; |
3957 | struct stat st; | |
3958 | ||
3959 | assert(p->copy_blocks_fd < 0); | |
3960 | assert(p->copy_blocks_size == UINT64_MAX); | |
3961 | ||
3962 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
3963 | continue; | |
3964 | ||
5c08da58 | 3965 | if (p->copy_blocks_path) { |
757bc2e4 | 3966 | |
5c08da58 LP |
3967 | source_fd = chase_symlinks_and_open(p->copy_blocks_path, root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
3968 | if (source_fd < 0) | |
3969 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 3970 | |
5c08da58 LP |
3971 | if (fstat(source_fd, &st) < 0) |
3972 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
3973 | ||
3974 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
3975 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
3976 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
3977 | ||
3978 | } else if (p->copy_blocks_auto) { | |
3979 | ||
3980 | r = resolve_copy_blocks_auto(p->type_uuid, root, restrict_devno, &opened, &uuid); | |
3981 | if (r < 0) | |
3982 | return r; | |
3983 | ||
3984 | source_fd = open(opened, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
3985 | if (source_fd < 0) | |
3986 | return log_error_errno(errno, "Failed to open automatically determined source block copy device '%s': %m", opened); | |
3987 | ||
3988 | if (fstat(source_fd, &st) < 0) | |
3989 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
3990 | ||
3991 | /* If we found it automatically, it must be a block device, let's enforce that */ | |
3992 | if (!S_ISBLK(st.st_mode)) | |
3993 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), | |
3994 | "Automatically detected source block copy device '%s' is not a block device, refusing: %m", opened); | |
3995 | } else | |
3996 | continue; | |
757bc2e4 LP |
3997 | |
3998 | if (S_ISDIR(st.st_mode)) { | |
3999 | _cleanup_free_ char *bdev = NULL; | |
4000 | ||
4001 | /* If the file is a directory, automatically find the backing block device */ | |
4002 | ||
4003 | if (major(st.st_dev) != 0) | |
4004 | r = device_path_make_major_minor(S_IFBLK, st.st_dev, &bdev); | |
4005 | else { | |
4006 | dev_t devt; | |
4007 | ||
4008 | /* Special support for btrfs */ | |
4009 | ||
4010 | r = btrfs_get_block_device_fd(source_fd, &devt); | |
67f0ac8c | 4011 | if (r == -EUCLEAN) |
5c08da58 | 4012 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 4013 | if (r < 0) |
5c08da58 | 4014 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 LP |
4015 | |
4016 | r = device_path_make_major_minor(S_IFBLK, devt, &bdev); | |
4017 | } | |
4018 | if (r < 0) | |
5c08da58 | 4019 | return log_error_errno(r, "Failed to determine block device path for block device backing '%s': %m", opened); |
757bc2e4 LP |
4020 | |
4021 | safe_close(source_fd); | |
4022 | ||
4023 | source_fd = open(bdev, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
4024 | if (source_fd < 0) | |
4025 | return log_error_errno(errno, "Failed to open block device '%s': %m", bdev); | |
4026 | ||
4027 | if (fstat(source_fd, &st) < 0) | |
4028 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
4029 | ||
4030 | if (!S_ISBLK(st.st_mode)) | |
4031 | return log_error_errno(SYNTHETIC_ERRNO(ENOTBLK), "Block device '%s' is not actually a block device, refusing.", bdev); | |
4032 | } | |
4033 | ||
4034 | if (S_ISREG(st.st_mode)) | |
4035 | size = st.st_size; | |
4036 | else if (S_ISBLK(st.st_mode)) { | |
4037 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
4038 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
4039 | } else | |
5c08da58 | 4040 | 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 |
4041 | |
4042 | if (size <= 0) | |
5c08da58 | 4043 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 4044 | if (size % 512 != 0) |
5c08da58 | 4045 | 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 |
4046 | |
4047 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
4048 | p->copy_blocks_size = size; | |
5c08da58 LP |
4049 | |
4050 | free_and_replace(p->copy_blocks_path, opened); | |
4051 | ||
4052 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
4053 | if (sd_id128_is_null(p->new_uuid) && !sd_id128_is_null(uuid)) | |
4054 | p->new_uuid = uuid; | |
757bc2e4 LP |
4055 | } |
4056 | ||
4057 | return 0; | |
4058 | } | |
4059 | ||
e594a3b1 LP |
4060 | static int help(void) { |
4061 | _cleanup_free_ char *link = NULL; | |
4062 | int r; | |
4063 | ||
4064 | r = terminal_urlify_man("systemd-repart", "1", &link); | |
4065 | if (r < 0) | |
4066 | return log_oom(); | |
4067 | ||
4068 | printf("%s [OPTIONS...] [DEVICE]\n" | |
4069 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
4070 | " -h --help Show this help\n" | |
4071 | " --version Show package version\n" | |
896e678b LP |
4072 | " --no-pager Do not pipe output into a pager\n" |
4073 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 4074 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
4075 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
4076 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 4077 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 4078 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
4079 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
4080 | " them\n" | |
4081 | " --can-factory-reset Test whether factory reset is defined\n" | |
4082 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 4083 | " --image=PATH Operate relative to image file\n" |
9d252fbb | 4084 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 4085 | " --key-file=PATH Key to use when encrypting partitions\n" |
889914ef | 4086 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 4087 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 4088 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
e594a3b1 | 4089 | " --seed=UUID 128bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 4090 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 4091 | " --json=pretty|short|off\n" |
de8231b0 | 4092 | " Generate JSON output\n" |
bc556335 DDM |
4093 | "\nSee the %s for details.\n", |
4094 | program_invocation_short_name, | |
4095 | ansi_highlight(), | |
4096 | ansi_normal(), | |
4097 | link); | |
e594a3b1 LP |
4098 | |
4099 | return 0; | |
4100 | } | |
4101 | ||
4102 | static int parse_argv(int argc, char *argv[]) { | |
4103 | ||
4104 | enum { | |
4105 | ARG_VERSION = 0x100, | |
896e678b LP |
4106 | ARG_NO_PAGER, |
4107 | ARG_NO_LEGEND, | |
e594a3b1 LP |
4108 | ARG_DRY_RUN, |
4109 | ARG_EMPTY, | |
4110 | ARG_DISCARD, | |
4111 | ARG_FACTORY_RESET, | |
4112 | ARG_CAN_FACTORY_RESET, | |
4113 | ARG_ROOT, | |
252d6267 | 4114 | ARG_IMAGE, |
e594a3b1 LP |
4115 | ARG_SEED, |
4116 | ARG_PRETTY, | |
4117 | ARG_DEFINITIONS, | |
a26f4a49 | 4118 | ARG_SIZE, |
a015fbe7 | 4119 | ARG_JSON, |
b9df3536 | 4120 | ARG_KEY_FILE, |
889914ef LP |
4121 | ARG_TPM2_DEVICE, |
4122 | ARG_TPM2_PCRS, | |
e594a3b1 LP |
4123 | }; |
4124 | ||
4125 | static const struct option options[] = { | |
4126 | { "help", no_argument, NULL, 'h' }, | |
4127 | { "version", no_argument, NULL, ARG_VERSION }, | |
896e678b LP |
4128 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
4129 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
e594a3b1 LP |
4130 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, |
4131 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
4132 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
4133 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
4134 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
4135 | { "root", required_argument, NULL, ARG_ROOT }, | |
252d6267 | 4136 | { "image", required_argument, NULL, ARG_IMAGE }, |
e594a3b1 LP |
4137 | { "seed", required_argument, NULL, ARG_SEED }, |
4138 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
4139 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
a26f4a49 | 4140 | { "size", required_argument, NULL, ARG_SIZE }, |
a015fbe7 | 4141 | { "json", required_argument, NULL, ARG_JSON }, |
b9df3536 | 4142 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, |
889914ef LP |
4143 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
4144 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
e594a3b1 LP |
4145 | {} |
4146 | }; | |
4147 | ||
a26f4a49 | 4148 | int c, r, dry_run = -1; |
e594a3b1 LP |
4149 | |
4150 | assert(argc >= 0); | |
4151 | assert(argv); | |
4152 | ||
4153 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
4154 | ||
4155 | switch (c) { | |
4156 | ||
4157 | case 'h': | |
4158 | return help(); | |
4159 | ||
4160 | case ARG_VERSION: | |
4161 | return version(); | |
4162 | ||
896e678b LP |
4163 | case ARG_NO_PAGER: |
4164 | arg_pager_flags |= PAGER_DISABLE; | |
4165 | break; | |
4166 | ||
4167 | case ARG_NO_LEGEND: | |
4168 | arg_legend = false; | |
4169 | break; | |
4170 | ||
e594a3b1 | 4171 | case ARG_DRY_RUN: |
599c7c54 | 4172 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 4173 | if (r < 0) |
599c7c54 | 4174 | return r; |
e594a3b1 LP |
4175 | break; |
4176 | ||
4177 | case ARG_EMPTY: | |
4178 | if (isempty(optarg) || streq(optarg, "refuse")) | |
4179 | arg_empty = EMPTY_REFUSE; | |
4180 | else if (streq(optarg, "allow")) | |
4181 | arg_empty = EMPTY_ALLOW; | |
4182 | else if (streq(optarg, "require")) | |
4183 | arg_empty = EMPTY_REQUIRE; | |
4184 | else if (streq(optarg, "force")) | |
4185 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
4186 | else if (streq(optarg, "create")) { |
4187 | arg_empty = EMPTY_CREATE; | |
4188 | ||
4189 | if (dry_run < 0) | |
4190 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
4191 | * anew. After all we cannot really break anyone's | |
4192 | * partition tables that way. */ | |
4193 | } else | |
e594a3b1 LP |
4194 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
4195 | "Failed to parse --empty= parameter: %s", optarg); | |
4196 | break; | |
4197 | ||
4198 | case ARG_DISCARD: | |
599c7c54 | 4199 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 4200 | if (r < 0) |
599c7c54 | 4201 | return r; |
e594a3b1 LP |
4202 | break; |
4203 | ||
4204 | case ARG_FACTORY_RESET: | |
c3470872 | 4205 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 4206 | if (r < 0) |
c3470872 | 4207 | return r; |
e594a3b1 LP |
4208 | arg_factory_reset = r; |
4209 | break; | |
4210 | ||
4211 | case ARG_CAN_FACTORY_RESET: | |
4212 | arg_can_factory_reset = true; | |
4213 | break; | |
4214 | ||
4215 | case ARG_ROOT: | |
252d6267 LP |
4216 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
4217 | if (r < 0) | |
4218 | return r; | |
4219 | break; | |
4220 | ||
4221 | case ARG_IMAGE: | |
4222 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
4223 | if (r < 0) |
4224 | return r; | |
4225 | break; | |
4226 | ||
4227 | case ARG_SEED: | |
4228 | if (isempty(optarg)) { | |
4229 | arg_seed = SD_ID128_NULL; | |
4230 | arg_randomize = false; | |
4231 | } else if (streq(optarg, "random")) | |
4232 | arg_randomize = true; | |
4233 | else { | |
4234 | r = sd_id128_from_string(optarg, &arg_seed); | |
4235 | if (r < 0) | |
4236 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
4237 | ||
4238 | arg_randomize = false; | |
4239 | } | |
4240 | ||
4241 | break; | |
4242 | ||
4243 | case ARG_PRETTY: | |
c3470872 | 4244 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 4245 | if (r < 0) |
c3470872 | 4246 | return r; |
e594a3b1 LP |
4247 | arg_pretty = r; |
4248 | break; | |
4249 | ||
4250 | case ARG_DEFINITIONS: | |
614b022c | 4251 | r = parse_path_argument(optarg, false, &arg_definitions); |
e594a3b1 LP |
4252 | if (r < 0) |
4253 | return r; | |
4254 | break; | |
4255 | ||
a26f4a49 LP |
4256 | case ARG_SIZE: { |
4257 | uint64_t parsed, rounded; | |
4258 | ||
170c9823 LP |
4259 | if (streq(optarg, "auto")) { |
4260 | arg_size = UINT64_MAX; | |
4261 | arg_size_auto = true; | |
4262 | break; | |
4263 | } | |
4264 | ||
a26f4a49 LP |
4265 | r = parse_size(optarg, 1024, &parsed); |
4266 | if (r < 0) | |
4267 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
4268 | ||
4269 | rounded = round_up_size(parsed, 4096); | |
4270 | if (rounded == 0) | |
4271 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
4272 | if (rounded == UINT64_MAX) | |
4273 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
4274 | ||
4275 | if (rounded != parsed) | |
4276 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " → %" PRIu64 ")", | |
4277 | parsed, rounded); | |
4278 | ||
4279 | arg_size = rounded; | |
170c9823 | 4280 | arg_size_auto = false; |
a26f4a49 LP |
4281 | break; |
4282 | } | |
b9df3536 | 4283 | |
a015fbe7 | 4284 | case ARG_JSON: |
b1e8f46c | 4285 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
4286 | if (r <= 0) |
4287 | return r; | |
a015fbe7 TH |
4288 | |
4289 | break; | |
4290 | ||
b9df3536 LP |
4291 | case ARG_KEY_FILE: { |
4292 | _cleanup_(erase_and_freep) char *k = NULL; | |
4293 | size_t n = 0; | |
4294 | ||
8b3c3a49 | 4295 | r = read_full_file_full( |
986311c2 | 4296 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
4297 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
4298 | NULL, | |
4299 | &k, &n); | |
b9df3536 LP |
4300 | if (r < 0) |
4301 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
4302 | ||
4303 | erase_and_free(arg_key); | |
4304 | arg_key = TAKE_PTR(k); | |
4305 | arg_key_size = n; | |
4306 | break; | |
4307 | } | |
a26f4a49 | 4308 | |
889914ef LP |
4309 | case ARG_TPM2_DEVICE: { |
4310 | _cleanup_free_ char *device = NULL; | |
4311 | ||
4312 | if (streq(optarg, "list")) | |
4313 | return tpm2_list_devices(); | |
4314 | ||
4315 | if (!streq(optarg, "auto")) { | |
4316 | device = strdup(optarg); | |
4317 | if (!device) | |
4318 | return log_oom(); | |
4319 | } | |
4320 | ||
4321 | free(arg_tpm2_device); | |
4322 | arg_tpm2_device = TAKE_PTR(device); | |
4323 | break; | |
4324 | } | |
4325 | ||
4326 | case ARG_TPM2_PCRS: { | |
4327 | uint32_t mask; | |
4328 | ||
4329 | if (isempty(optarg)) { | |
4330 | arg_tpm2_pcr_mask = 0; | |
4331 | break; | |
4332 | } | |
4333 | ||
4334 | r = tpm2_parse_pcrs(optarg, &mask); | |
4335 | if (r < 0) | |
4336 | return r; | |
4337 | ||
4338 | if (arg_tpm2_pcr_mask == UINT32_MAX) | |
4339 | arg_tpm2_pcr_mask = mask; | |
4340 | else | |
4341 | arg_tpm2_pcr_mask |= mask; | |
4342 | ||
4343 | break; | |
4344 | } | |
4345 | ||
e594a3b1 LP |
4346 | case '?': |
4347 | return -EINVAL; | |
4348 | ||
4349 | default: | |
4350 | assert_not_reached("Unhandled option"); | |
4351 | } | |
4352 | ||
4353 | if (argc - optind > 1) | |
4354 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
4355 | "Expected at most one argument, the path to the block device."); | |
4356 | ||
a26f4a49 | 4357 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 4358 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 4359 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
4360 | |
4361 | if (arg_can_factory_reset) | |
a26f4a49 LP |
4362 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
4363 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
4364 | * open things strictly read-only. */ | |
4365 | else if (dry_run >= 0) | |
4366 | arg_dry_run = dry_run; | |
4367 | ||
170c9823 | 4368 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
4369 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
4370 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 4371 | |
252d6267 LP |
4372 | if (arg_image && arg_root) |
4373 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
4374 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
4375 | |
4376 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
4377 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
4378 | * is vendor-supplied but the root fs formatted on first boot. */ | |
4379 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
4380 | if (r <= 0) { | |
4381 | if (r < 0 && r != -ENOENT) | |
4382 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
4383 | ||
4384 | arg_root = strdup("/sysroot"); | |
4385 | } else | |
4386 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
4387 | if (!arg_root) |
4388 | return log_oom(); | |
4389 | } | |
4390 | ||
e594a3b1 | 4391 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 4392 | |
252d6267 | 4393 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
4394 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
4395 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
4396 | ||
889914ef LP |
4397 | if (arg_tpm2_pcr_mask == UINT32_MAX) |
4398 | arg_tpm2_pcr_mask = TPM2_PCR_MASK_DEFAULT; | |
4399 | ||
e594a3b1 LP |
4400 | return 1; |
4401 | } | |
4402 | ||
4403 | static int parse_proc_cmdline_factory_reset(void) { | |
4404 | bool b; | |
4405 | int r; | |
4406 | ||
4407 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
4408 | return 0; | |
4409 | ||
4410 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
4411 | return 0; | |
4412 | ||
4413 | r = proc_cmdline_get_bool("systemd.factory_reset", &b); | |
4414 | if (r < 0) | |
4415 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
4416 | if (r > 0) { | |
4417 | arg_factory_reset = b; | |
4418 | ||
4419 | if (b) | |
4420 | log_notice("Honouring factory reset requested via kernel command line."); | |
4421 | } | |
4422 | ||
4423 | return 0; | |
4424 | } | |
4425 | ||
4426 | static int parse_efi_variable_factory_reset(void) { | |
4427 | _cleanup_free_ char *value = NULL; | |
4428 | int r; | |
4429 | ||
4430 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
4431 | return 0; | |
4432 | ||
4433 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
4434 | return 0; | |
4435 | ||
e6f055cb | 4436 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
e594a3b1 LP |
4437 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
4438 | return 0; | |
4439 | if (r < 0) | |
4440 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); | |
4441 | ||
4442 | r = parse_boolean(value); | |
4443 | if (r < 0) | |
4444 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
4445 | ||
4446 | arg_factory_reset = r; | |
4447 | if (r) | |
111a3aae | 4448 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
4449 | |
4450 | return 0; | |
4451 | } | |
4452 | ||
4453 | static int remove_efi_variable_factory_reset(void) { | |
4454 | int r; | |
4455 | ||
e6f055cb | 4456 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
e594a3b1 LP |
4457 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
4458 | return 0; | |
4459 | if (r < 0) | |
4460 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); | |
4461 | ||
4462 | log_info("Successfully unset EFI variable FactoryReset."); | |
4463 | return 0; | |
4464 | } | |
4465 | ||
252d6267 LP |
4466 | static int acquire_root_devno( |
4467 | const char *p, | |
4468 | const char *root, | |
4469 | int mode, | |
4470 | char **ret, | |
4471 | int *ret_fd) { | |
4472 | ||
4473 | _cleanup_free_ char *found_path = NULL; | |
4474 | dev_t devno, fd_devno = MODE_INVALID; | |
e594a3b1 LP |
4475 | _cleanup_close_ int fd = -1; |
4476 | struct stat st; | |
e594a3b1 LP |
4477 | int r; |
4478 | ||
a26f4a49 LP |
4479 | assert(p); |
4480 | assert(ret); | |
4481 | assert(ret_fd); | |
4482 | ||
252d6267 | 4483 | fd = chase_symlinks_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 4484 | if (fd < 0) |
252d6267 | 4485 | return fd; |
e594a3b1 LP |
4486 | |
4487 | if (fstat(fd, &st) < 0) | |
4488 | return -errno; | |
4489 | ||
4490 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 4491 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 4492 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
4493 | return 0; |
4494 | } | |
4495 | ||
252d6267 LP |
4496 | if (S_ISBLK(st.st_mode)) { |
4497 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 4498 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
4499 | if (root) |
4500 | return -EPERM; | |
4501 | ||
a26f4a49 | 4502 | fd_devno = devno = st.st_rdev; |
252d6267 | 4503 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
4504 | |
4505 | devno = st.st_dev; | |
a26f4a49 | 4506 | if (major(devno) == 0) { |
e594a3b1 LP |
4507 | r = btrfs_get_block_device_fd(fd, &devno); |
4508 | if (r == -ENOTTY) /* not btrfs */ | |
4509 | return -ENODEV; | |
4510 | if (r < 0) | |
4511 | return r; | |
4512 | } | |
e594a3b1 LP |
4513 | } else |
4514 | return -ENOTBLK; | |
4515 | ||
4516 | /* From dm-crypt to backing partition */ | |
4517 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
4518 | if (r == -ENOENT) |
4519 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
4520 | else if (r < 0) | |
e594a3b1 LP |
4521 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
4522 | ||
4523 | /* From partition to whole disk containing it */ | |
4524 | r = block_get_whole_disk(devno, &devno); | |
4525 | if (r < 0) | |
162392b7 | 4526 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 4527 | |
a26f4a49 LP |
4528 | r = device_path_make_canonical(S_IFBLK, devno, ret); |
4529 | if (r < 0) | |
4530 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
4531 | ||
4532 | /* Only if we still lock at the same block device we can reuse the fd. Otherwise return an | |
4533 | * invalidated fd. */ | |
f5fbe71d | 4534 | *ret_fd = fd_devno != MODE_INVALID && fd_devno == devno ? TAKE_FD(fd) : -1; |
a26f4a49 | 4535 | return 0; |
e594a3b1 LP |
4536 | } |
4537 | ||
a73b2ad0 LP |
4538 | static int find_os_prefix(const char **ret) { |
4539 | int r; | |
4540 | ||
4541 | assert(ret); | |
4542 | ||
4543 | /* Searches for the right place to look for the OS root. This is relevant in the initrd: in the | |
4544 | * initrd the host OS is typically mounted to /sysroot/ — except in setups where /usr/ is a separate | |
4545 | * partition, in which case it is mounted to /sysusr/usr/ before being moved to /sysroot/usr/. */ | |
4546 | ||
4547 | if (!in_initrd()) { | |
4548 | *ret = NULL; /* no prefix */ | |
4549 | return 0; | |
4550 | } | |
4551 | ||
4552 | r = path_is_mount_point("/sysroot", NULL, 0); | |
4553 | if (r < 0 && r != -ENOENT) | |
4554 | log_debug_errno(r, "Failed to determine whether /sysroot/ is a mount point, assuming it is not: %m"); | |
4555 | else if (r > 0) { | |
4556 | log_debug("/sysroot/ is a mount point, assuming it's the prefix."); | |
4557 | *ret = "/sysroot"; | |
4558 | return 0; | |
4559 | } | |
4560 | ||
4561 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
4562 | if (r < 0 && r != -ENOENT) | |
4563 | log_debug_errno(r, "Failed to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
4564 | else if (r > 0) { | |
4565 | log_debug("/sysusr/usr/ is a mount point, assuming /sysusr/ is the prefix."); | |
4566 | *ret = "/sysusr"; | |
4567 | return 0; | |
4568 | } | |
4569 | ||
4570 | return -ENOENT; | |
4571 | } | |
4572 | ||
a26f4a49 | 4573 | static int find_root(char **ret, int *ret_fd) { |
a73b2ad0 | 4574 | const char *t, *prefix; |
e594a3b1 LP |
4575 | int r; |
4576 | ||
a26f4a49 LP |
4577 | assert(ret); |
4578 | assert(ret_fd); | |
4579 | ||
e594a3b1 | 4580 | if (arg_node) { |
a26f4a49 LP |
4581 | if (arg_empty == EMPTY_CREATE) { |
4582 | _cleanup_close_ int fd = -1; | |
4583 | _cleanup_free_ char *s = NULL; | |
4584 | ||
4585 | s = strdup(arg_node); | |
4586 | if (!s) | |
4587 | return log_oom(); | |
4588 | ||
5332d7c6 | 4589 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
4590 | if (fd < 0) |
4591 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
4592 | ||
4593 | *ret = TAKE_PTR(s); | |
4594 | *ret_fd = TAKE_FD(fd); | |
4595 | return 0; | |
4596 | } | |
4597 | ||
252d6267 LP |
4598 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
4599 | * we'll take it relative to the host, not the image */ | |
4600 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, ret, ret_fd); | |
67f0ac8c LP |
4601 | if (r == -EUCLEAN) |
4602 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 4603 | if (r < 0) |
aa2a74ad | 4604 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
4605 | |
4606 | return 0; | |
4607 | } | |
4608 | ||
a26f4a49 LP |
4609 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
4610 | ||
e594a3b1 LP |
4611 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The |
4612 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
4613 | * (think: volatile setups) */ | |
4614 | ||
a73b2ad0 LP |
4615 | r = find_os_prefix(&prefix); |
4616 | if (r < 0) | |
4617 | return log_error_errno(r, "Failed to determine OS prefix: %m"); | |
4618 | ||
e594a3b1 LP |
4619 | FOREACH_STRING(t, "/", "/usr") { |
4620 | _cleanup_free_ char *j = NULL; | |
4621 | const char *p; | |
4622 | ||
a73b2ad0 LP |
4623 | if (prefix) { |
4624 | j = path_join(prefix, t); | |
e594a3b1 LP |
4625 | if (!j) |
4626 | return log_oom(); | |
4627 | ||
4628 | p = j; | |
4629 | } else | |
4630 | p = t; | |
4631 | ||
252d6267 | 4632 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, ret, ret_fd); |
e594a3b1 | 4633 | if (r < 0) { |
67f0ac8c LP |
4634 | if (r == -EUCLEAN) |
4635 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
e594a3b1 LP |
4636 | if (r != -ENODEV) |
4637 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
4638 | } else | |
4639 | return 0; | |
4640 | } | |
4641 | ||
4642 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
4643 | } | |
4644 | ||
f9b3afae LP |
4645 | static int resize_pt(int fd) { |
4646 | char procfs_path[STRLEN("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; | |
4647 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; | |
4648 | int r; | |
4649 | ||
4650 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
4651 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
4652 | * immediately write it again, with no changes. */ | |
4653 | ||
4654 | c = fdisk_new_context(); | |
4655 | if (!c) | |
4656 | return log_oom(); | |
4657 | ||
4658 | xsprintf(procfs_path, "/proc/self/fd/%i", fd); | |
4659 | r = fdisk_assign_device(c, procfs_path, 0); | |
4660 | if (r < 0) | |
4661 | return log_error_errno(r, "Failed to open device '%s': %m", procfs_path); | |
4662 | ||
4663 | r = fdisk_has_label(c); | |
4664 | if (r < 0) | |
4665 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", procfs_path); | |
4666 | if (r == 0) { | |
4667 | log_debug("Not resizing partition table, as there currently is none."); | |
4668 | return 0; | |
4669 | } | |
4670 | ||
4671 | r = fdisk_write_disklabel(c); | |
4672 | if (r < 0) | |
4673 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
4674 | ||
4675 | log_info("Resized partition table."); | |
4676 | return 1; | |
4677 | } | |
4678 | ||
252d6267 LP |
4679 | static int resize_backing_fd( |
4680 | const char *node, /* The primary way we access the disk image to operate on */ | |
4681 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
4682 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
4683 | LoopDevice *loop_device) { | |
4684 | ||
a26f4a49 LP |
4685 | char buf1[FORMAT_BYTES_MAX], buf2[FORMAT_BYTES_MAX]; |
4686 | _cleanup_close_ int writable_fd = -1; | |
252d6267 | 4687 | uint64_t current_size; |
a26f4a49 LP |
4688 | struct stat st; |
4689 | int r; | |
4690 | ||
4691 | assert(node); | |
4692 | assert(fd); | |
4693 | ||
4694 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
4695 | return 0; | |
4696 | ||
4697 | if (*fd < 0) { | |
4698 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
4699 | * keep a reference to the file we can pass around. */ | |
4700 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
4701 | if (*fd < 0) | |
4702 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
4703 | } | |
4704 | ||
4705 | if (fstat(*fd, &st) < 0) | |
4706 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
4707 | ||
252d6267 LP |
4708 | if (S_ISBLK(st.st_mode)) { |
4709 | if (!backing_file) | |
4710 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
4711 | ||
4712 | assert(loop_device); | |
a26f4a49 | 4713 | |
252d6267 LP |
4714 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
4715 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
4716 | } else { | |
4717 | r = stat_verify_regular(&st); | |
4718 | if (r < 0) | |
4719 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
4720 | ||
4721 | assert(!backing_file); | |
4722 | assert(!loop_device); | |
4723 | current_size = st.st_size; | |
4724 | } | |
4725 | ||
4726 | assert_se(format_bytes(buf1, sizeof(buf1), current_size)); | |
a26f4a49 LP |
4727 | assert_se(format_bytes(buf2, sizeof(buf2), arg_size)); |
4728 | ||
252d6267 | 4729 | if (current_size >= arg_size) { |
a26f4a49 LP |
4730 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", node, buf1, buf2); |
4731 | return 0; | |
4732 | } | |
4733 | ||
252d6267 LP |
4734 | if (S_ISBLK(st.st_mode)) { |
4735 | assert(backing_file); | |
4736 | ||
4737 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
4738 | * backing file, hence let's do that. */ | |
4739 | ||
4740 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
4741 | if (writable_fd < 0) | |
4742 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
4743 | ||
4744 | if (fstat(writable_fd, &st) < 0) | |
4745 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
4746 | ||
4747 | r = stat_verify_regular(&st); | |
4748 | if (r < 0) | |
4749 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
4750 | ||
4751 | if ((uint64_t) st.st_size != current_size) | |
4752 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
4753 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", node, backing_file); | |
4754 | } else { | |
4755 | assert(S_ISREG(st.st_mode)); | |
4756 | assert(!backing_file); | |
a26f4a49 | 4757 | |
252d6267 LP |
4758 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
4759 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
4760 | * as fdisk can't accept it anyway. */ | |
4761 | ||
4762 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
4763 | if (writable_fd < 0) | |
4764 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
4765 | } | |
a26f4a49 LP |
4766 | |
4767 | if (!arg_discard) { | |
4768 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
4769 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
4770 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
4771 | node, buf1, buf2); | |
4772 | ||
4773 | /* Fallback to truncation, if fallocate() is not supported. */ | |
4774 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
4775 | } else { | |
252d6267 | 4776 | if (current_size == 0) /* Likely regular file just created by us */ |
a26f4a49 LP |
4777 | log_info("Allocated %s for '%s'.", buf2, node); |
4778 | else | |
4779 | log_info("File '%s' grown from %s to %s by allocation.", node, buf1, buf2); | |
4780 | ||
252d6267 | 4781 | goto done; |
a26f4a49 LP |
4782 | } |
4783 | } | |
4784 | ||
4785 | if (ftruncate(writable_fd, arg_size) < 0) | |
4786 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
4787 | node, buf1, buf2); | |
4788 | ||
252d6267 LP |
4789 | if (current_size == 0) /* Likely regular file just created by us */ |
4790 | log_info("Sized '%s' to %s.", node, buf2); | |
4791 | else | |
4792 | log_info("File '%s' grown from %s to %s by truncation.", node, buf1, buf2); | |
4793 | ||
4794 | done: | |
f9b3afae LP |
4795 | r = resize_pt(writable_fd); |
4796 | if (r < 0) | |
4797 | return r; | |
4798 | ||
252d6267 LP |
4799 | if (loop_device) { |
4800 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
4801 | if (r < 0) | |
4802 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
4803 | } | |
a26f4a49 LP |
4804 | |
4805 | return 1; | |
4806 | } | |
4807 | ||
170c9823 LP |
4808 | static int determine_auto_size(Context *c) { |
4809 | uint64_t sum = round_up_size(GPT_METADATA_SIZE, 4096); | |
4810 | char buf[FORMAT_BYTES_MAX]; | |
4811 | Partition *p; | |
4812 | ||
4813 | assert_se(c); | |
170c9823 LP |
4814 | |
4815 | LIST_FOREACH(partitions, p, c->partitions) { | |
4816 | uint64_t m; | |
4817 | ||
4818 | if (p->dropped) | |
4819 | continue; | |
4820 | ||
4821 | m = partition_min_size_with_padding(p); | |
4822 | if (m > UINT64_MAX - sum) | |
4823 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
4824 | ||
4825 | sum += m; | |
4826 | } | |
4827 | ||
4828 | assert_se(format_bytes(buf, sizeof(buf), sum)); | |
4829 | log_info("Automatically determined minimal disk image size as %s.", buf); | |
4830 | ||
4831 | arg_size = sum; | |
4832 | return 0; | |
4833 | } | |
4834 | ||
e594a3b1 | 4835 | static int run(int argc, char *argv[]) { |
252d6267 LP |
4836 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
4837 | _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL; | |
4838 | _cleanup_(umount_and_rmdir_and_freep) char *mounted_dir = NULL; | |
e594a3b1 LP |
4839 | _cleanup_(context_freep) Context* context = NULL; |
4840 | _cleanup_free_ char *node = NULL; | |
a26f4a49 | 4841 | _cleanup_close_ int backing_fd = -1; |
252d6267 | 4842 | bool from_scratch, node_is_our_loop = false; |
e594a3b1 LP |
4843 | int r; |
4844 | ||
4845 | log_show_color(true); | |
4846 | log_parse_environment(); | |
4847 | log_open(); | |
4848 | ||
e594a3b1 LP |
4849 | r = parse_argv(argc, argv); |
4850 | if (r <= 0) | |
4851 | return r; | |
4852 | ||
4853 | r = parse_proc_cmdline_factory_reset(); | |
4854 | if (r < 0) | |
4855 | return r; | |
4856 | ||
4857 | r = parse_efi_variable_factory_reset(); | |
4858 | if (r < 0) | |
4859 | return r; | |
4860 | ||
252d6267 LP |
4861 | if (arg_image) { |
4862 | assert(!arg_root); | |
4863 | ||
4864 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
4865 | * systems */ | |
4866 | r = mount_image_privately_interactively( | |
4867 | arg_image, | |
4868 | DISSECT_IMAGE_MOUNT_READ_ONLY | | |
4869 | (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) */ | |
4870 | DISSECT_IMAGE_GPT_ONLY | | |
4871 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
4872 | DISSECT_IMAGE_USR_NO_ROOT | | |
4873 | DISSECT_IMAGE_REQUIRE_ROOT, | |
4874 | &mounted_dir, | |
4875 | &loop_device, | |
4876 | &decrypted_image); | |
4877 | if (r < 0) | |
4878 | return r; | |
4879 | ||
4880 | arg_root = strdup(mounted_dir); | |
4881 | if (!arg_root) | |
4882 | return log_oom(); | |
4883 | ||
4884 | if (!arg_node) { | |
4885 | arg_node = strdup(loop_device->node); | |
4886 | if (!arg_node) | |
4887 | return log_oom(); | |
4888 | ||
4889 | /* Remember that the the device we are about to manipulate is actually the one we | |
4890 | * allocated here, and thus to increase its backing file we know what to do */ | |
4891 | node_is_our_loop = true; | |
4892 | } | |
4893 | } | |
4894 | ||
e594a3b1 LP |
4895 | context = context_new(arg_seed); |
4896 | if (!context) | |
4897 | return log_oom(); | |
4898 | ||
4899 | r = context_read_definitions(context, arg_definitions, arg_root); | |
4900 | if (r < 0) | |
4901 | return r; | |
4902 | ||
a26f4a49 | 4903 | if (context->n_partitions <= 0 && arg_empty == EMPTY_REFUSE) { |
e2d65cd2 | 4904 | log_info("Didn't find any partition definition files, nothing to do."); |
0ae5ffe0 | 4905 | return 0; |
e2d65cd2 | 4906 | } |
0ae5ffe0 | 4907 | |
a26f4a49 | 4908 | r = find_root(&node, &backing_fd); |
0ae5ffe0 YW |
4909 | if (r < 0) |
4910 | return r; | |
4911 | ||
a26f4a49 | 4912 | if (arg_size != UINT64_MAX) { |
252d6267 LP |
4913 | r = resize_backing_fd( |
4914 | node, | |
4915 | &backing_fd, | |
4916 | node_is_our_loop ? arg_image : NULL, | |
4917 | node_is_our_loop ? loop_device : NULL); | |
a26f4a49 LP |
4918 | if (r < 0) |
4919 | return r; | |
4920 | } | |
4921 | ||
4922 | r = context_load_partition_table(context, node, &backing_fd); | |
e594a3b1 LP |
4923 | if (r == -EHWPOISON) |
4924 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
4925 | * really an error when called at boot. */ | |
4926 | if (r < 0) | |
4927 | return r; | |
4928 | from_scratch = r > 0; /* Starting from scratch */ | |
4929 | ||
4930 | if (arg_can_factory_reset) { | |
4931 | r = context_can_factory_reset(context); | |
4932 | if (r < 0) | |
4933 | return r; | |
4934 | if (r == 0) | |
4935 | return EXIT_FAILURE; | |
4936 | ||
4937 | return 0; | |
4938 | } | |
4939 | ||
4940 | r = context_factory_reset(context, from_scratch); | |
4941 | if (r < 0) | |
4942 | return r; | |
4943 | if (r > 0) { | |
4944 | /* We actually did a factory reset! */ | |
4945 | r = remove_efi_variable_factory_reset(); | |
4946 | if (r < 0) | |
4947 | return r; | |
4948 | ||
4949 | /* Reload the reduced partition table */ | |
4950 | context_unload_partition_table(context); | |
a26f4a49 | 4951 | r = context_load_partition_table(context, node, &backing_fd); |
e594a3b1 LP |
4952 | if (r < 0) |
4953 | return r; | |
4954 | } | |
4955 | ||
4956 | #if 0 | |
4957 | (void) context_dump_partitions(context, node); | |
4958 | putchar('\n'); | |
4959 | #endif | |
4960 | ||
4961 | r = context_read_seed(context, arg_root); | |
4962 | if (r < 0) | |
4963 | return r; | |
4964 | ||
757bc2e4 | 4965 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
4966 | r = context_open_copy_block_paths( |
4967 | context, | |
4968 | arg_root, | |
7802194a | 4969 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
4970 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
4971 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
4972 | if (r < 0) |
4973 | return r; | |
4974 | ||
170c9823 LP |
4975 | if (arg_size_auto) { |
4976 | r = determine_auto_size(context); | |
4977 | if (r < 0) | |
4978 | return r; | |
4979 | ||
4980 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
4981 | context_unload_partition_table(context); | |
4982 | ||
4983 | assert_se(arg_size != UINT64_MAX); | |
252d6267 LP |
4984 | r = resize_backing_fd( |
4985 | node, | |
4986 | &backing_fd, | |
4987 | node_is_our_loop ? arg_image : NULL, | |
4988 | node_is_our_loop ? loop_device : NULL); | |
170c9823 LP |
4989 | if (r < 0) |
4990 | return r; | |
4991 | ||
4992 | r = context_load_partition_table(context, node, &backing_fd); | |
4993 | if (r < 0) | |
4994 | return r; | |
4995 | } | |
4996 | ||
e594a3b1 LP |
4997 | /* First try to fit new partitions in, dropping by priority until it fits */ |
4998 | for (;;) { | |
4999 | if (context_allocate_partitions(context)) | |
5000 | break; /* Success! */ | |
5001 | ||
d17db7b2 LP |
5002 | if (!context_drop_one_priority(context)) { |
5003 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), | |
5004 | "Can't fit requested partitions into free space, refusing."); | |
5005 | ||
5006 | determine_auto_size(context); | |
5007 | return r; | |
5008 | } | |
e594a3b1 LP |
5009 | } |
5010 | ||
5011 | /* Now assign free space according to the weight logic */ | |
5012 | r = context_grow_partitions(context); | |
5013 | if (r < 0) | |
5014 | return r; | |
5015 | ||
5016 | /* Now calculate where each partition gets placed */ | |
5017 | context_place_partitions(context); | |
5018 | ||
5019 | /* Make sure each partition has a unique UUID and unique label */ | |
5020 | r = context_acquire_partition_uuids_and_labels(context); | |
5021 | if (r < 0) | |
5022 | return r; | |
5023 | ||
5024 | r = context_write_partition_table(context, node, from_scratch); | |
5025 | if (r < 0) | |
5026 | return r; | |
5027 | ||
5028 | return 0; | |
5029 | } | |
5030 | ||
5031 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |