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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
e594a3b1 LP |
2 | |
3 | #if HAVE_VALGRIND_MEMCHECK_H | |
4 | #include <valgrind/memcheck.h> | |
5 | #endif | |
6 | ||
7 | #include <fcntl.h> | |
8 | #include <getopt.h> | |
e594a3b1 LP |
9 | #include <linux/fs.h> |
10 | #include <linux/loop.h> | |
11 | #include <sys/file.h> | |
12 | #include <sys/ioctl.h> | |
13 | #include <sys/stat.h> | |
14 | ||
1a037ba2 | 15 | #include "sd-device.h" |
e594a3b1 LP |
16 | #include "sd-id128.h" |
17 | ||
18 | #include "alloc-util.h" | |
19 | #include "blkid-util.h" | |
20 | #include "blockdev-util.h" | |
21 | #include "btrfs-util.h" | |
d6b4d1c7 | 22 | #include "build.h" |
f4351959 | 23 | #include "chase-symlinks.h" |
e594a3b1 LP |
24 | #include "conf-files.h" |
25 | #include "conf-parser.h" | |
28db6fbf | 26 | #include "constants.h" |
1e2f3230 | 27 | #include "cryptsetup-util.h" |
ca822829 | 28 | #include "device-util.h" |
7176f06c | 29 | #include "devnum-util.h" |
5c08da58 | 30 | #include "dirent-util.h" |
e594a3b1 LP |
31 | #include "efivars.h" |
32 | #include "errno-util.h" | |
33 | #include "fd-util.h" | |
4dc07c3a | 34 | #include "fdisk-util.h" |
b9df3536 | 35 | #include "fileio.h" |
e594a3b1 LP |
36 | #include "format-table.h" |
37 | #include "format-util.h" | |
38 | #include "fs-util.h" | |
d8e32c47 | 39 | #include "glyph-util.h" |
e594a3b1 | 40 | #include "gpt.h" |
889914ef | 41 | #include "hexdecoct.h" |
ade99252 | 42 | #include "hmac.h" |
e594a3b1 | 43 | #include "id128-util.h" |
baa6a42d | 44 | #include "initrd-util.h" |
b456191d | 45 | #include "io-util.h" |
a015fbe7 | 46 | #include "json.h" |
e594a3b1 | 47 | #include "list.h" |
53171c04 | 48 | #include "loop-util.h" |
e594a3b1 | 49 | #include "main-func.h" |
8a794850 | 50 | #include "mkdir.h" |
53171c04 | 51 | #include "mkfs-util.h" |
8a794850 | 52 | #include "mount-util.h" |
5c08da58 | 53 | #include "mountpoint-util.h" |
b456191d | 54 | #include "openssl-util.h" |
614b022c | 55 | #include "parse-argument.h" |
c3eaba2d | 56 | #include "parse-helpers.h" |
e594a3b1 LP |
57 | #include "pretty-print.h" |
58 | #include "proc-cmdline.h" | |
8a794850 | 59 | #include "process-util.h" |
b9df3536 | 60 | #include "random-util.h" |
170c9823 | 61 | #include "resize-fs.h" |
95bfd3cd | 62 | #include "rm-rf.h" |
e594a3b1 | 63 | #include "sort-util.h" |
e031166e | 64 | #include "specifier.h" |
e594a3b1 | 65 | #include "stdio-util.h" |
889914ef | 66 | #include "string-table.h" |
e594a3b1 LP |
67 | #include "string-util.h" |
68 | #include "strv.h" | |
bf819d3a | 69 | #include "sync-util.h" |
95bfd3cd | 70 | #include "tmpfile-util.h" |
e594a3b1 | 71 | #include "terminal-util.h" |
02ef97cd | 72 | #include "tpm-pcr.h" |
889914ef | 73 | #include "tpm2-util.h" |
8a794850 | 74 | #include "user-util.h" |
e594a3b1 LP |
75 | #include "utf8.h" |
76 | ||
fb08381c LP |
77 | /* If not configured otherwise use a minimal partition size of 10M */ |
78 | #define DEFAULT_MIN_SIZE (10*1024*1024) | |
79 | ||
80 | /* Hard lower limit for new partition sizes */ | |
81 | #define HARD_MIN_SIZE 4096 | |
82 | ||
b456191d DDM |
83 | /* We know up front we're never going to put more than this in a verity sig partition. */ |
84 | #define VERITY_SIG_SIZE (HARD_MIN_SIZE * 4) | |
85 | ||
69e3234d | 86 | /* libfdisk takes off slightly more than 1M of the disk size when creating a GPT disk label */ |
170c9823 LP |
87 | #define GPT_METADATA_SIZE (1044*1024) |
88 | ||
89 | /* LUKS2 takes off 16M of the partition size with its metadata by default */ | |
90 | #define LUKS2_METADATA_SIZE (16*1024*1024) | |
91 | ||
e594a3b1 LP |
92 | /* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks |
93 | * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B | |
94 | * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll | |
95 | * waste 3K per partition, which is probably fine. */ | |
96 | ||
97 | static enum { | |
98 | EMPTY_REFUSE, /* refuse empty disks, never create a partition table */ | |
99 | EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */ | |
100 | EMPTY_REQUIRE, /* require an empty disk, create a partition table */ | |
101 | EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */ | |
a26f4a49 | 102 | EMPTY_CREATE, /* create disk as loopback file, create a partition table always */ |
e594a3b1 LP |
103 | } arg_empty = EMPTY_REFUSE; |
104 | ||
105 | static bool arg_dry_run = true; | |
106 | static const char *arg_node = NULL; | |
107 | static char *arg_root = NULL; | |
252d6267 | 108 | static char *arg_image = NULL; |
224c853f | 109 | static char **arg_definitions = NULL; |
e594a3b1 LP |
110 | static bool arg_discard = true; |
111 | static bool arg_can_factory_reset = false; | |
112 | static int arg_factory_reset = -1; | |
113 | static sd_id128_t arg_seed = SD_ID128_NULL; | |
114 | static bool arg_randomize = false; | |
115 | static int arg_pretty = -1; | |
a26f4a49 | 116 | static uint64_t arg_size = UINT64_MAX; |
170c9823 | 117 | static bool arg_size_auto = false; |
6a01ea4a | 118 | static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; |
896e678b LP |
119 | static PagerFlags arg_pager_flags = 0; |
120 | static bool arg_legend = true; | |
b9df3536 LP |
121 | static void *arg_key = NULL; |
122 | static size_t arg_key_size = 0; | |
b456191d DDM |
123 | static EVP_PKEY *arg_private_key = NULL; |
124 | static X509 *arg_certificate = NULL; | |
889914ef LP |
125 | static char *arg_tpm2_device = NULL; |
126 | static uint32_t arg_tpm2_pcr_mask = UINT32_MAX; | |
02ef97cd LP |
127 | static char *arg_tpm2_public_key = NULL; |
128 | static uint32_t arg_tpm2_public_key_pcr_mask = UINT32_MAX; | |
4cee8333 | 129 | static bool arg_split = false; |
e594a3b1 LP |
130 | |
131 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 132 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
224c853f | 133 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep); |
b9df3536 | 134 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
b456191d DDM |
135 | STATIC_DESTRUCTOR_REGISTER(arg_private_key, EVP_PKEY_freep); |
136 | STATIC_DESTRUCTOR_REGISTER(arg_certificate, X509_freep); | |
889914ef | 137 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
02ef97cd | 138 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep); |
e594a3b1 LP |
139 | |
140 | typedef struct Partition Partition; | |
141 | typedef struct FreeArea FreeArea; | |
142 | typedef struct Context Context; | |
143 | ||
889914ef LP |
144 | typedef enum EncryptMode { |
145 | ENCRYPT_OFF, | |
146 | ENCRYPT_KEY_FILE, | |
147 | ENCRYPT_TPM2, | |
148 | ENCRYPT_KEY_FILE_TPM2, | |
149 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 150 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
151 | } EncryptMode; |
152 | ||
b5b7879a DDM |
153 | typedef enum VerityMode { |
154 | VERITY_OFF, | |
155 | VERITY_DATA, | |
156 | VERITY_HASH, | |
b456191d | 157 | VERITY_SIG, |
b5b7879a DDM |
158 | _VERITY_MODE_MAX, |
159 | _VERITY_MODE_INVALID = -EINVAL, | |
160 | } VerityMode; | |
161 | ||
e594a3b1 LP |
162 | struct Partition { |
163 | char *definition_path; | |
39fc0174 | 164 | char **drop_in_files; |
e594a3b1 LP |
165 | |
166 | sd_id128_t type_uuid; | |
167 | sd_id128_t current_uuid, new_uuid; | |
11749b61 | 168 | bool new_uuid_is_set; |
e594a3b1 LP |
169 | char *current_label, *new_label; |
170 | ||
171 | bool dropped; | |
172 | bool factory_reset; | |
173 | int32_t priority; | |
174 | ||
175 | uint32_t weight, padding_weight; | |
176 | ||
177 | uint64_t current_size, new_size; | |
178 | uint64_t size_min, size_max; | |
179 | ||
180 | uint64_t current_padding, new_padding; | |
181 | uint64_t padding_min, padding_max; | |
182 | ||
183 | uint64_t partno; | |
184 | uint64_t offset; | |
185 | ||
186 | struct fdisk_partition *current_partition; | |
187 | struct fdisk_partition *new_partition; | |
188 | FreeArea *padding_area; | |
189 | FreeArea *allocated_to_area; | |
190 | ||
757bc2e4 | 191 | char *copy_blocks_path; |
5c08da58 | 192 | bool copy_blocks_auto; |
757bc2e4 LP |
193 | int copy_blocks_fd; |
194 | uint64_t copy_blocks_size; | |
195 | ||
53171c04 | 196 | char *format; |
8a794850 | 197 | char **copy_files; |
d83d8048 | 198 | char **make_directories; |
889914ef | 199 | EncryptMode encrypt; |
b5b7879a DDM |
200 | VerityMode verity; |
201 | char *verity_match_key; | |
53171c04 | 202 | |
e73309c5 | 203 | uint64_t gpt_flags; |
ff0771bf | 204 | int no_auto; |
e73309c5 | 205 | int read_only; |
1c41c1dc | 206 | int growfs; |
e73309c5 | 207 | |
b5b7879a DDM |
208 | uint8_t *roothash; |
209 | size_t roothash_size; | |
210 | ||
4cee8333 DDM |
211 | char *split_name_format; |
212 | char *split_name_resolved; | |
213 | ||
b5b7879a DDM |
214 | Partition *siblings[_VERITY_MODE_MAX]; |
215 | ||
e594a3b1 LP |
216 | LIST_FIELDS(Partition, partitions); |
217 | }; | |
218 | ||
219 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
220 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
221 | ||
222 | struct FreeArea { | |
223 | Partition *after; | |
224 | uint64_t size; | |
225 | uint64_t allocated; | |
226 | }; | |
227 | ||
228 | struct Context { | |
229 | LIST_HEAD(Partition, partitions); | |
230 | size_t n_partitions; | |
231 | ||
232 | FreeArea **free_areas; | |
319a4f4b | 233 | size_t n_free_areas; |
e594a3b1 LP |
234 | |
235 | uint64_t start, end, total; | |
236 | ||
237 | struct fdisk_context *fdisk_context; | |
994b3031 LP |
238 | uint64_t sector_size; |
239 | uint64_t grain_size; | |
e594a3b1 LP |
240 | |
241 | sd_id128_t seed; | |
242 | }; | |
243 | ||
889914ef LP |
244 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
245 | [ENCRYPT_OFF] = "off", | |
246 | [ENCRYPT_KEY_FILE] = "key-file", | |
247 | [ENCRYPT_TPM2] = "tpm2", | |
248 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
249 | }; | |
250 | ||
b5b7879a DDM |
251 | static const char *verity_mode_table[_VERITY_MODE_MAX] = { |
252 | [VERITY_OFF] = "off", | |
253 | [VERITY_DATA] = "data", | |
254 | [VERITY_HASH] = "hash", | |
b456191d | 255 | [VERITY_SIG] = "signature", |
b5b7879a DDM |
256 | }; |
257 | ||
2709d029 | 258 | #if HAVE_LIBCRYPTSETUP |
889914ef | 259 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); |
2709d029 MH |
260 | #else |
261 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); | |
262 | #endif | |
263 | ||
86bebe38 | 264 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode); |
889914ef | 265 | |
e594a3b1 LP |
266 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
267 | return (v / p) * p; | |
268 | } | |
269 | ||
270 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
271 | ||
272 | v = DIV_ROUND_UP(v, p); | |
273 | ||
274 | if (v > UINT64_MAX / p) | |
275 | return UINT64_MAX; /* overflow */ | |
276 | ||
277 | return v * p; | |
278 | } | |
279 | ||
280 | static Partition *partition_new(void) { | |
281 | Partition *p; | |
282 | ||
283 | p = new(Partition, 1); | |
284 | if (!p) | |
285 | return NULL; | |
286 | ||
287 | *p = (Partition) { | |
288 | .weight = 1000, | |
289 | .padding_weight = 0, | |
290 | .current_size = UINT64_MAX, | |
291 | .new_size = UINT64_MAX, | |
292 | .size_min = UINT64_MAX, | |
293 | .size_max = UINT64_MAX, | |
294 | .current_padding = UINT64_MAX, | |
295 | .new_padding = UINT64_MAX, | |
296 | .padding_min = UINT64_MAX, | |
297 | .padding_max = UINT64_MAX, | |
298 | .partno = UINT64_MAX, | |
299 | .offset = UINT64_MAX, | |
757bc2e4 LP |
300 | .copy_blocks_fd = -1, |
301 | .copy_blocks_size = UINT64_MAX, | |
ff0771bf | 302 | .no_auto = -1, |
e73309c5 | 303 | .read_only = -1, |
1c41c1dc | 304 | .growfs = -1, |
e594a3b1 LP |
305 | }; |
306 | ||
307 | return p; | |
308 | } | |
309 | ||
310 | static Partition* partition_free(Partition *p) { | |
311 | if (!p) | |
312 | return NULL; | |
313 | ||
314 | free(p->current_label); | |
315 | free(p->new_label); | |
316 | free(p->definition_path); | |
39fc0174 | 317 | strv_free(p->drop_in_files); |
e594a3b1 LP |
318 | |
319 | if (p->current_partition) | |
320 | fdisk_unref_partition(p->current_partition); | |
321 | if (p->new_partition) | |
322 | fdisk_unref_partition(p->new_partition); | |
323 | ||
757bc2e4 LP |
324 | free(p->copy_blocks_path); |
325 | safe_close(p->copy_blocks_fd); | |
326 | ||
53171c04 | 327 | free(p->format); |
8a794850 | 328 | strv_free(p->copy_files); |
d83d8048 | 329 | strv_free(p->make_directories); |
b5b7879a DDM |
330 | free(p->verity_match_key); |
331 | ||
332 | free(p->roothash); | |
53171c04 | 333 | |
4cee8333 DDM |
334 | free(p->split_name_format); |
335 | free(p->split_name_resolved); | |
336 | ||
e594a3b1 LP |
337 | return mfree(p); |
338 | } | |
339 | ||
9ccceb9d YW |
340 | static void partition_foreignize(Partition *p) { |
341 | assert(p); | |
342 | assert(PARTITION_EXISTS(p)); | |
343 | ||
344 | /* Reset several parameters set through definition file to make the partition foreign. */ | |
345 | ||
346 | p->new_label = mfree(p->new_label); | |
347 | p->definition_path = mfree(p->definition_path); | |
348 | p->drop_in_files = strv_free(p->drop_in_files); | |
349 | ||
350 | p->copy_blocks_path = mfree(p->copy_blocks_path); | |
351 | p->copy_blocks_fd = safe_close(p->copy_blocks_fd); | |
352 | ||
353 | p->format = mfree(p->format); | |
354 | p->copy_files = strv_free(p->copy_files); | |
355 | p->make_directories = strv_free(p->make_directories); | |
356 | p->verity_match_key = mfree(p->verity_match_key); | |
357 | ||
358 | p->new_uuid = SD_ID128_NULL; | |
359 | p->new_uuid_is_set = false; | |
360 | p->priority = 0; | |
361 | p->weight = 1000; | |
362 | p->padding_weight = 0; | |
363 | p->size_min = UINT64_MAX; | |
364 | p->size_max = UINT64_MAX; | |
365 | p->padding_min = UINT64_MAX; | |
366 | p->padding_max = UINT64_MAX; | |
367 | p->no_auto = -1; | |
368 | p->read_only = -1; | |
369 | p->growfs = -1; | |
370 | p->verity = VERITY_OFF; | |
371 | } | |
372 | ||
e594a3b1 LP |
373 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { |
374 | if (!p) | |
375 | return NULL; | |
376 | ||
377 | LIST_REMOVE(partitions, context->partitions, p); | |
378 | ||
379 | assert(context->n_partitions > 0); | |
380 | context->n_partitions--; | |
381 | ||
382 | return partition_free(p); | |
383 | } | |
384 | ||
385 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
386 | ||
387 | static Context *context_new(sd_id128_t seed) { | |
388 | Context *context; | |
389 | ||
390 | context = new(Context, 1); | |
391 | if (!context) | |
392 | return NULL; | |
393 | ||
394 | *context = (Context) { | |
395 | .start = UINT64_MAX, | |
396 | .end = UINT64_MAX, | |
397 | .total = UINT64_MAX, | |
398 | .seed = seed, | |
399 | }; | |
400 | ||
401 | return context; | |
402 | } | |
403 | ||
404 | static void context_free_free_areas(Context *context) { | |
405 | assert(context); | |
406 | ||
407 | for (size_t i = 0; i < context->n_free_areas; i++) | |
408 | free(context->free_areas[i]); | |
409 | ||
410 | context->free_areas = mfree(context->free_areas); | |
411 | context->n_free_areas = 0; | |
e594a3b1 LP |
412 | } |
413 | ||
414 | static Context *context_free(Context *context) { | |
415 | if (!context) | |
416 | return NULL; | |
417 | ||
418 | while (context->partitions) | |
419 | partition_unlink_and_free(context, context->partitions); | |
420 | assert(context->n_partitions == 0); | |
421 | ||
422 | context_free_free_areas(context); | |
423 | ||
424 | if (context->fdisk_context) | |
425 | fdisk_unref_context(context->fdisk_context); | |
426 | ||
427 | return mfree(context); | |
428 | } | |
429 | ||
430 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
431 | ||
432 | static int context_add_free_area( | |
433 | Context *context, | |
434 | uint64_t size, | |
435 | Partition *after) { | |
436 | ||
437 | FreeArea *a; | |
438 | ||
439 | assert(context); | |
440 | assert(!after || !after->padding_area); | |
441 | ||
319a4f4b | 442 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
443 | return -ENOMEM; |
444 | ||
445 | a = new(FreeArea, 1); | |
446 | if (!a) | |
447 | return -ENOMEM; | |
448 | ||
449 | *a = (FreeArea) { | |
450 | .size = size, | |
451 | .after = after, | |
452 | }; | |
453 | ||
454 | context->free_areas[context->n_free_areas++] = a; | |
455 | ||
456 | if (after) | |
457 | after->padding_area = a; | |
458 | ||
459 | return 0; | |
460 | } | |
461 | ||
9ccceb9d YW |
462 | static void partition_drop_or_foreignize(Partition *p) { |
463 | if (!p || p->dropped || PARTITION_IS_FOREIGN(p)) | |
464 | return; | |
465 | ||
466 | if (PARTITION_EXISTS(p)) { | |
467 | log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.", | |
468 | strna(p->current_label ?: p->new_label), p->priority); | |
469 | ||
470 | /* Handle the partition as foreign. Do not set dropped flag. */ | |
471 | partition_foreignize(p); | |
472 | } else { | |
473 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", | |
474 | p->definition_path, p->priority); | |
475 | ||
476 | p->dropped = true; | |
477 | p->allocated_to_area = NULL; | |
478 | } | |
479 | } | |
480 | ||
481 | static bool context_drop_or_foreignize_one_priority(Context *context) { | |
e594a3b1 | 482 | int32_t priority = 0; |
e594a3b1 LP |
483 | |
484 | LIST_FOREACH(partitions, p, context->partitions) { | |
485 | if (p->dropped) | |
486 | continue; | |
e594a3b1 | 487 | |
9ccceb9d | 488 | priority = MAX(priority, p->priority); |
e594a3b1 LP |
489 | } |
490 | ||
491 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
492 | * least one existing priority */ | |
9ccceb9d | 493 | if (priority <= 0) |
e594a3b1 LP |
494 | return false; |
495 | ||
496 | LIST_FOREACH(partitions, p, context->partitions) { | |
497 | if (p->priority < priority) | |
498 | continue; | |
499 | ||
9ccceb9d | 500 | partition_drop_or_foreignize(p); |
b5b7879a DDM |
501 | |
502 | /* We ensure that all verity sibling partitions have the same priority, so it's safe | |
503 | * to drop all siblings here as well. */ | |
504 | ||
9ccceb9d YW |
505 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) |
506 | partition_drop_or_foreignize(p->siblings[mode]); | |
e594a3b1 LP |
507 | } |
508 | ||
509 | return true; | |
510 | } | |
511 | ||
a80701e6 | 512 | static uint64_t partition_min_size(const Context *context, const Partition *p) { |
e594a3b1 LP |
513 | uint64_t sz; |
514 | ||
994b3031 LP |
515 | assert(context); |
516 | assert(p); | |
517 | ||
e594a3b1 LP |
518 | /* Calculate the disk space we really need at minimum for this partition. If the partition already |
519 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
520 | * than 4K. |
521 | * | |
522 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
523 | |
524 | if (PARTITION_IS_FOREIGN(p)) { | |
525 | /* Don't allow changing size of partitions not managed by us */ | |
526 | assert(p->current_size != UINT64_MAX); | |
527 | return p->current_size; | |
528 | } | |
529 | ||
b456191d DDM |
530 | if (p->verity == VERITY_SIG) |
531 | return VERITY_SIG_SIZE; | |
532 | ||
fb08381c | 533 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 534 | |
170c9823 LP |
535 | if (!PARTITION_EXISTS(p)) { |
536 | uint64_t d = 0; | |
537 | ||
889914ef | 538 | if (p->encrypt != ENCRYPT_OFF) |
994b3031 | 539 | d += round_up_size(LUKS2_METADATA_SIZE, context->grain_size); |
170c9823 LP |
540 | |
541 | if (p->copy_blocks_size != UINT64_MAX) | |
994b3031 | 542 | d += round_up_size(p->copy_blocks_size, context->grain_size); |
889914ef | 543 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
544 | uint64_t f; |
545 | ||
546 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
994b3031 LP |
547 | f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX; |
548 | d += f == UINT64_MAX ? context->grain_size : f; | |
170c9823 LP |
549 | } |
550 | ||
551 | if (d > sz) | |
552 | sz = d; | |
553 | } | |
757bc2e4 | 554 | |
994b3031 | 555 | return MAX(round_up_size(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, context->grain_size), sz); |
e594a3b1 LP |
556 | } |
557 | ||
994b3031 LP |
558 | static uint64_t partition_max_size(const Context *context, const Partition *p) { |
559 | uint64_t sm; | |
560 | ||
e594a3b1 LP |
561 | /* Calculate how large the partition may become at max. This is generally the configured maximum |
562 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
563 | * since we never want to shrink partitions. */ | |
564 | ||
994b3031 LP |
565 | assert(context); |
566 | assert(p); | |
567 | ||
e594a3b1 LP |
568 | if (PARTITION_IS_FOREIGN(p)) { |
569 | /* Don't allow changing size of partitions not managed by us */ | |
570 | assert(p->current_size != UINT64_MAX); | |
571 | return p->current_size; | |
572 | } | |
573 | ||
b456191d DDM |
574 | if (p->verity == VERITY_SIG) |
575 | return VERITY_SIG_SIZE; | |
576 | ||
822d9b9a YW |
577 | if (p->size_max == UINT64_MAX) |
578 | return UINT64_MAX; | |
579 | ||
994b3031 LP |
580 | sm = round_down_size(p->size_max, context->grain_size); |
581 | ||
e594a3b1 | 582 | if (p->current_size != UINT64_MAX) |
b0fbf90b | 583 | sm = MAX(p->current_size, sm); |
e594a3b1 | 584 | |
b0fbf90b | 585 | return MAX(partition_min_size(context, p), sm); |
e594a3b1 LP |
586 | } |
587 | ||
a801bb01 YW |
588 | static uint64_t partition_min_padding(const Partition *p) { |
589 | assert(p); | |
590 | return p->padding_min != UINT64_MAX ? p->padding_min : 0; | |
591 | } | |
592 | ||
593 | static uint64_t partition_max_padding(const Partition *p) { | |
594 | assert(p); | |
595 | return p->padding_max; | |
596 | } | |
597 | ||
994b3031 | 598 | static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) { |
e594a3b1 LP |
599 | uint64_t sz; |
600 | ||
601 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
602 | * takes user configured padding into account as well as any additional whitespace needed to align | |
603 | * the next partition to 4K again. */ | |
604 | ||
994b3031 LP |
605 | assert(context); |
606 | assert(p); | |
607 | ||
a801bb01 | 608 | sz = partition_min_size(context, p) + partition_min_padding(p); |
e594a3b1 LP |
609 | |
610 | if (PARTITION_EXISTS(p)) { | |
611 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
612 | assert(p->offset != UINT64_MAX); | |
994b3031 | 613 | return round_up_size(p->offset + sz, context->grain_size) - p->offset; |
e594a3b1 LP |
614 | } |
615 | ||
616 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
994b3031 | 617 | return round_up_size(sz, context->grain_size); |
e594a3b1 LP |
618 | } |
619 | ||
620 | static uint64_t free_area_available(const FreeArea *a) { | |
621 | assert(a); | |
622 | ||
623 | /* Determines how much of this free area is not allocated yet */ | |
624 | ||
625 | assert(a->size >= a->allocated); | |
626 | return a->size - a->allocated; | |
627 | } | |
628 | ||
58b06ac1 | 629 | static uint64_t free_area_current_end(Context *context, const FreeArea *a) { |
994b3031 LP |
630 | assert(context); |
631 | assert(a); | |
632 | ||
58b06ac1 YW |
633 | if (!a->after) |
634 | return free_area_available(a); | |
e594a3b1 | 635 | |
58b06ac1 YW |
636 | assert(a->after->offset != UINT64_MAX); |
637 | assert(a->after->current_size != UINT64_MAX); | |
e594a3b1 | 638 | |
58b06ac1 YW |
639 | /* Calculate where the free area ends, based on the offset of the partition preceding it. */ |
640 | return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a); | |
641 | } | |
e594a3b1 | 642 | |
58b06ac1 YW |
643 | static uint64_t free_area_min_end(Context *context, const FreeArea *a) { |
644 | assert(context); | |
645 | assert(a); | |
e594a3b1 | 646 | |
58b06ac1 YW |
647 | if (!a->after) |
648 | return 0; | |
e594a3b1 | 649 | |
58b06ac1 YW |
650 | assert(a->after->offset != UINT64_MAX); |
651 | assert(a->after->current_size != UINT64_MAX); | |
1052a114 | 652 | |
58b06ac1 YW |
653 | /* Calculate where the partition would end when we give it as much as it needs. */ |
654 | return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size); | |
655 | } | |
656 | ||
657 | static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) { | |
658 | assert(context); | |
659 | assert(a); | |
660 | ||
661 | /* Similar to free_area_available(), but takes into account that the required size and padding of the | |
662 | * preceding partition is honoured. */ | |
e594a3b1 | 663 | |
58b06ac1 | 664 | return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a)); |
e594a3b1 LP |
665 | } |
666 | ||
994b3031 LP |
667 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) { |
668 | assert(context); | |
669 | ||
670 | return CMP(free_area_available_for_new_partitions(context, *a), | |
671 | free_area_available_for_new_partitions(context, *b)); | |
e594a3b1 LP |
672 | } |
673 | ||
994b3031 LP |
674 | static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) { |
675 | assert(context); | |
e594a3b1 | 676 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ |
184cf99a | 677 | assert(amount <= total); |
994b3031 | 678 | return LESS_BY(total, round_up_size(amount, context->grain_size)); |
e594a3b1 LP |
679 | } |
680 | ||
681 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
682 | assert(amount <= total); | |
683 | return total - amount; | |
684 | } | |
685 | ||
14a4c4ed | 686 | static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) { |
e594a3b1 LP |
687 | assert(context); |
688 | ||
f39cf264 YW |
689 | /* This may be called multiple times. Reset previous assignments. */ |
690 | for (size_t i = 0; i < context->n_free_areas; i++) | |
691 | context->free_areas[i]->allocated = 0; | |
692 | ||
14a4c4ed | 693 | /* Sort free areas by size, putting smallest first */ |
994b3031 | 694 | typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context); |
e594a3b1 | 695 | |
14a4c4ed LP |
696 | /* In any case return size of the largest free area (i.e. not the size of all free areas |
697 | * combined!) */ | |
698 | if (ret_largest_free_area) | |
699 | *ret_largest_free_area = | |
700 | context->n_free_areas == 0 ? 0 : | |
994b3031 | 701 | free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]); |
14a4c4ed | 702 | |
cdbcc339 YW |
703 | /* Check that each existing partition can fit its area. */ |
704 | for (size_t i = 0; i < context->n_free_areas; i++) | |
705 | if (free_area_current_end(context, context->free_areas[i]) < | |
706 | free_area_min_end(context, context->free_areas[i])) | |
707 | return false; | |
708 | ||
14a4c4ed | 709 | /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */ |
e594a3b1 LP |
710 | LIST_FOREACH(partitions, p, context->partitions) { |
711 | bool fits = false; | |
712 | uint64_t required; | |
713 | FreeArea *a = NULL; | |
714 | ||
715 | /* Skip partitions we already dropped or that already exist */ | |
716 | if (p->dropped || PARTITION_EXISTS(p)) | |
717 | continue; | |
718 | ||
e594a3b1 | 719 | /* How much do we need to fit? */ |
994b3031 LP |
720 | required = partition_min_size_with_padding(context, p); |
721 | assert(required % context->grain_size == 0); | |
e594a3b1 LP |
722 | |
723 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
724 | a = context->free_areas[i]; | |
725 | ||
994b3031 | 726 | if (free_area_available_for_new_partitions(context, a) >= required) { |
e594a3b1 LP |
727 | fits = true; |
728 | break; | |
729 | } | |
730 | } | |
731 | ||
732 | if (!fits) | |
733 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
734 | ||
735 | /* Assign the partition to this free area */ | |
736 | p->allocated_to_area = a; | |
737 | ||
738 | /* Budget the minimal partition size */ | |
739 | a->allocated += required; | |
740 | } | |
741 | ||
742 | return true; | |
743 | } | |
744 | ||
745 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
746 | uint64_t weight_sum = 0; | |
e594a3b1 LP |
747 | |
748 | assert(context); | |
749 | assert(a); | |
750 | assert(ret); | |
751 | ||
752 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
753 | ||
754 | LIST_FOREACH(partitions, p, context->partitions) { | |
755 | if (p->padding_area != a && p->allocated_to_area != a) | |
756 | continue; | |
757 | ||
758 | if (p->weight > UINT64_MAX - weight_sum) | |
759 | goto overflow_sum; | |
760 | weight_sum += p->weight; | |
761 | ||
762 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
763 | goto overflow_sum; | |
764 | weight_sum += p->padding_weight; | |
765 | } | |
766 | ||
767 | *ret = weight_sum; | |
768 | return 0; | |
769 | ||
770 | overflow_sum: | |
771 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64bit range, refusing."); | |
772 | } | |
773 | ||
0245e15a | 774 | static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) { |
e594a3b1 | 775 | assert(weight_sum >= weight); |
e594a3b1 | 776 | |
0245e15a YW |
777 | for (;;) { |
778 | if (weight == 0) | |
779 | return 0; | |
780 | if (weight == weight_sum) | |
781 | return value; | |
782 | if (value <= UINT64_MAX / weight) | |
783 | return value * weight / weight_sum; | |
784 | ||
785 | /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the | |
786 | * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down: | |
787 | * - the sum of scale_by_weight() for all weights must not be larger than the input value, | |
788 | * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */ | |
789 | weight_sum = DIV_ROUND_UP(weight_sum, 2); | |
790 | weight /= 2; | |
e594a3b1 | 791 | } |
e594a3b1 LP |
792 | } |
793 | ||
794 | typedef enum GrowPartitionPhase { | |
bf99aed6 YW |
795 | /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */ |
796 | PHASE_FOREIGN, | |
797 | ||
e594a3b1 LP |
798 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ |
799 | PHASE_OVERCHARGE, | |
800 | ||
801 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
802 | PHASE_UNDERCHARGE, | |
803 | ||
804 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
805 | PHASE_DISTRIBUTE, | |
ae0613c6 LP |
806 | |
807 | _GROW_PARTITION_PHASE_MAX, | |
e594a3b1 LP |
808 | } GrowPartitionPhase; |
809 | ||
0245e15a | 810 | static bool context_grow_partitions_phase( |
e594a3b1 LP |
811 | Context *context, |
812 | FreeArea *a, | |
813 | GrowPartitionPhase phase, | |
814 | uint64_t *span, | |
815 | uint64_t *weight_sum) { | |
816 | ||
2a503ad2 YW |
817 | bool try_again = false; |
818 | ||
e594a3b1 LP |
819 | assert(context); |
820 | assert(a); | |
0245e15a YW |
821 | assert(span); |
822 | assert(weight_sum); | |
e594a3b1 LP |
823 | |
824 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
825 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
826 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
827 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
828 | LIST_FOREACH(partitions, p, context->partitions) { | |
829 | ||
830 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 831 | * preceding it, or allocated into it */ |
e594a3b1 LP |
832 | if (p->allocated_to_area != a && p->padding_area != a) |
833 | continue; | |
834 | ||
835 | if (p->new_size == UINT64_MAX) { | |
e594a3b1 | 836 | uint64_t share, rsz, xsz; |
2a503ad2 | 837 | bool charge = false; |
e594a3b1 LP |
838 | |
839 | /* Calculate how much this space this partition needs if everyone would get | |
840 | * the weight based share */ | |
0245e15a | 841 | share = scale_by_weight(*span, p->weight, *weight_sum); |
e594a3b1 | 842 | |
994b3031 LP |
843 | rsz = partition_min_size(context, p); |
844 | xsz = partition_max_size(context, p); | |
e594a3b1 | 845 | |
bf99aed6 YW |
846 | if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) { |
847 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
848 | ||
849 | p->new_size = p->current_size; | |
850 | charge = true; | |
851 | ||
852 | } else if (phase == PHASE_OVERCHARGE && rsz > share) { | |
e594a3b1 LP |
853 | /* This partition needs more than its calculated share. Let's assign |
854 | * it that, and take this partition out of all calculations and start | |
855 | * again. */ | |
856 | ||
857 | p->new_size = rsz; | |
858 | charge = try_again = true; | |
859 | ||
822d9b9a | 860 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
e594a3b1 LP |
861 | /* This partition accepts less than its calculated |
862 | * share. Let's assign it that, and take this partition out | |
863 | * of all calculations and start again. */ | |
864 | ||
865 | p->new_size = xsz; | |
866 | charge = try_again = true; | |
867 | ||
868 | } else if (phase == PHASE_DISTRIBUTE) { | |
869 | /* This partition can accept its calculated share. Let's | |
870 | * assign it. There's no need to restart things here since | |
871 | * assigning this shouldn't impact the shares of the other | |
872 | * partitions. */ | |
873 | ||
d7c46b5e YW |
874 | assert(share >= rsz); |
875 | p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
876 | charge = true; |
877 | } | |
878 | ||
879 | if (charge) { | |
994b3031 | 880 | *span = charge_size(context, *span, p->new_size); |
e594a3b1 LP |
881 | *weight_sum = charge_weight(*weight_sum, p->weight); |
882 | } | |
e594a3b1 LP |
883 | } |
884 | ||
885 | if (p->new_padding == UINT64_MAX) { | |
a801bb01 | 886 | uint64_t share, rsz, xsz; |
2a503ad2 | 887 | bool charge = false; |
e594a3b1 | 888 | |
0245e15a | 889 | share = scale_by_weight(*span, p->padding_weight, *weight_sum); |
e594a3b1 | 890 | |
a801bb01 YW |
891 | rsz = partition_min_padding(p); |
892 | xsz = partition_max_padding(p); | |
893 | ||
894 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
895 | p->new_padding = rsz; | |
e594a3b1 | 896 | charge = try_again = true; |
a801bb01 YW |
897 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
898 | p->new_padding = xsz; | |
e594a3b1 LP |
899 | charge = try_again = true; |
900 | } else if (phase == PHASE_DISTRIBUTE) { | |
d7c46b5e YW |
901 | assert(share >= rsz); |
902 | p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
903 | charge = true; |
904 | } | |
905 | ||
906 | if (charge) { | |
994b3031 | 907 | *span = charge_size(context, *span, p->new_padding); |
e594a3b1 LP |
908 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); |
909 | } | |
e594a3b1 LP |
910 | } |
911 | } | |
912 | ||
2a503ad2 | 913 | return !try_again; |
e594a3b1 LP |
914 | } |
915 | ||
19903a43 YW |
916 | static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) { |
917 | uint64_t m; | |
918 | ||
919 | assert(context); | |
920 | assert(a); | |
921 | assert(p); | |
922 | assert(span); | |
923 | ||
924 | if (*span == 0) | |
925 | return; | |
926 | ||
927 | if (p->allocated_to_area != a) | |
928 | return; | |
929 | ||
930 | if (PARTITION_IS_FOREIGN(p)) | |
931 | return; | |
932 | ||
933 | assert(p->new_size != UINT64_MAX); | |
934 | ||
935 | /* Calculate new size and align. */ | |
936 | m = round_down_size(p->new_size + *span, context->grain_size); | |
937 | /* But ensure this doesn't shrink the size. */ | |
938 | m = MAX(m, p->new_size); | |
939 | /* And ensure this doesn't exceed the maximum size. */ | |
940 | m = MIN(m, partition_max_size(context, p)); | |
941 | ||
942 | assert(m >= p->new_size); | |
943 | ||
944 | *span = charge_size(context, *span, m - p->new_size); | |
945 | p->new_size = m; | |
946 | } | |
947 | ||
e594a3b1 LP |
948 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { |
949 | uint64_t weight_sum = 0, span; | |
950 | int r; | |
951 | ||
952 | assert(context); | |
953 | assert(a); | |
954 | ||
955 | r = context_sum_weights(context, a, &weight_sum); | |
956 | if (r < 0) | |
957 | return r; | |
958 | ||
959 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
960 | span = a->size; | |
961 | if (a->after) { | |
962 | assert(a->after->offset != UINT64_MAX); | |
963 | assert(a->after->current_size != UINT64_MAX); | |
964 | ||
994b3031 | 965 | span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset; |
e594a3b1 LP |
966 | } |
967 | ||
0245e15a YW |
968 | for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;) |
969 | if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum)) | |
970 | phase++; /* go to the next phase */ | |
e594a3b1 | 971 | |
162392b7 | 972 | /* We still have space left over? Donate to preceding partition if we have one */ |
19903a43 YW |
973 | if (span > 0 && a->after) |
974 | context_grow_partition_one(context, a, a->after, &span); | |
e594a3b1 | 975 | |
162392b7 | 976 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 | 977 | * size limit), then let's donate it to whoever wants it. */ |
03677889 | 978 | if (span > 0) |
e594a3b1 | 979 | LIST_FOREACH(partitions, p, context->partitions) { |
19903a43 | 980 | context_grow_partition_one(context, a, p, &span); |
e594a3b1 LP |
981 | if (span == 0) |
982 | break; | |
983 | } | |
e594a3b1 | 984 | |
162392b7 | 985 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
986 | if (span > 0 && a->after) { |
987 | assert(a->after->new_padding != UINT64_MAX); | |
988 | a->after->new_padding += span; | |
989 | } | |
990 | ||
991 | return 0; | |
992 | } | |
993 | ||
994 | static int context_grow_partitions(Context *context) { | |
e594a3b1 LP |
995 | int r; |
996 | ||
997 | assert(context); | |
998 | ||
999 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
1000 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
1001 | if (r < 0) | |
1002 | return r; | |
1003 | } | |
1004 | ||
1005 | /* All existing partitions that have no free space after them can't change size */ | |
1006 | LIST_FOREACH(partitions, p, context->partitions) { | |
1007 | if (p->dropped) | |
1008 | continue; | |
1009 | ||
1010 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
1011 | /* The algorithm above must have initialized this already */ | |
1012 | assert(p->new_size != UINT64_MAX); | |
1013 | continue; | |
1014 | } | |
1015 | ||
1016 | assert(p->new_size == UINT64_MAX); | |
1017 | p->new_size = p->current_size; | |
1018 | ||
1019 | assert(p->new_padding == UINT64_MAX); | |
1020 | p->new_padding = p->current_padding; | |
1021 | } | |
1022 | ||
1023 | return 0; | |
1024 | } | |
1025 | ||
1026 | static void context_place_partitions(Context *context) { | |
1027 | uint64_t partno = 0; | |
e594a3b1 LP |
1028 | |
1029 | assert(context); | |
1030 | ||
1031 | /* Determine next partition number to assign */ | |
1032 | LIST_FOREACH(partitions, p, context->partitions) { | |
1033 | if (!PARTITION_EXISTS(p)) | |
1034 | continue; | |
1035 | ||
1036 | assert(p->partno != UINT64_MAX); | |
1037 | if (p->partno >= partno) | |
1038 | partno = p->partno + 1; | |
1039 | } | |
1040 | ||
1041 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
1042 | FreeArea *a = context->free_areas[i]; | |
2ea7eb00 FS |
1043 | _unused_ uint64_t left; |
1044 | uint64_t start; | |
e594a3b1 LP |
1045 | |
1046 | if (a->after) { | |
1047 | assert(a->after->offset != UINT64_MAX); | |
1048 | assert(a->after->new_size != UINT64_MAX); | |
1049 | assert(a->after->new_padding != UINT64_MAX); | |
1050 | ||
1051 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
1052 | } else | |
1053 | start = context->start; | |
1054 | ||
994b3031 | 1055 | start = round_up_size(start, context->grain_size); |
e594a3b1 LP |
1056 | left = a->size; |
1057 | ||
1058 | LIST_FOREACH(partitions, p, context->partitions) { | |
1059 | if (p->allocated_to_area != a) | |
1060 | continue; | |
1061 | ||
1062 | p->offset = start; | |
1063 | p->partno = partno++; | |
1064 | ||
1065 | assert(left >= p->new_size); | |
1066 | start += p->new_size; | |
1067 | left -= p->new_size; | |
1068 | ||
1069 | assert(left >= p->new_padding); | |
1070 | start += p->new_padding; | |
1071 | left -= p->new_padding; | |
1072 | } | |
1073 | } | |
1074 | } | |
1075 | ||
e594a3b1 LP |
1076 | static int config_parse_type( |
1077 | const char *unit, | |
1078 | const char *filename, | |
1079 | unsigned line, | |
1080 | const char *section, | |
1081 | unsigned section_line, | |
1082 | const char *lvalue, | |
1083 | int ltype, | |
1084 | const char *rvalue, | |
1085 | void *data, | |
1086 | void *userdata) { | |
1087 | ||
99534007 | 1088 | sd_id128_t *type_uuid = ASSERT_PTR(data); |
e594a3b1 LP |
1089 | int r; |
1090 | ||
1091 | assert(rvalue); | |
e594a3b1 LP |
1092 | |
1093 | r = gpt_partition_type_uuid_from_string(rvalue, type_uuid); | |
1094 | if (r < 0) | |
1095 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
1096 | ||
1097 | return 0; | |
1098 | } | |
1099 | ||
1100 | static int config_parse_label( | |
1101 | const char *unit, | |
1102 | const char *filename, | |
1103 | unsigned line, | |
1104 | const char *section, | |
1105 | unsigned section_line, | |
1106 | const char *lvalue, | |
1107 | int ltype, | |
1108 | const char *rvalue, | |
1109 | void *data, | |
1110 | void *userdata) { | |
1111 | ||
e031166e | 1112 | _cleanup_free_ char *resolved = NULL; |
99534007 | 1113 | char **label = ASSERT_PTR(data); |
e594a3b1 LP |
1114 | int r; |
1115 | ||
1116 | assert(rvalue); | |
e594a3b1 | 1117 | |
be9ce018 LP |
1118 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
1119 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
1120 | ||
de61a04b | 1121 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved); |
e031166e | 1122 | if (r < 0) { |
e459258f | 1123 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
1124 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
1129 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1130 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
1131 | return 0; | |
1132 | } | |
1133 | ||
22a0a36e LP |
1134 | r = gpt_partition_label_valid(resolved); |
1135 | if (r < 0) { | |
1136 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1137 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
1138 | resolved, rvalue); | |
1139 | return 0; | |
1140 | } | |
1141 | if (!r) { | |
e594a3b1 | 1142 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
1143 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
1144 | resolved, rvalue); | |
e594a3b1 LP |
1145 | return 0; |
1146 | } | |
1147 | ||
e031166e | 1148 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1149 | return 0; |
1150 | } | |
1151 | ||
1152 | static int config_parse_weight( | |
1153 | const char *unit, | |
1154 | const char *filename, | |
1155 | unsigned line, | |
1156 | const char *section, | |
1157 | unsigned section_line, | |
1158 | const char *lvalue, | |
1159 | int ltype, | |
1160 | const char *rvalue, | |
1161 | void *data, | |
1162 | void *userdata) { | |
1163 | ||
f126038f | 1164 | uint32_t *w = ASSERT_PTR(data), v; |
e594a3b1 LP |
1165 | int r; |
1166 | ||
1167 | assert(rvalue); | |
e594a3b1 LP |
1168 | |
1169 | r = safe_atou32(rvalue, &v); | |
1170 | if (r < 0) { | |
1171 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1172 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1173 | return 0; | |
1174 | } | |
1175 | ||
1176 | if (v > 1000U*1000U) { | |
c8f3d767 | 1177 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1178 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1179 | return 0; | |
1180 | } | |
1181 | ||
f126038f | 1182 | *w = v; |
e594a3b1 LP |
1183 | return 0; |
1184 | } | |
1185 | ||
1186 | static int config_parse_size4096( | |
1187 | const char *unit, | |
1188 | const char *filename, | |
1189 | unsigned line, | |
1190 | const char *section, | |
1191 | unsigned section_line, | |
1192 | const char *lvalue, | |
1193 | int ltype, | |
1194 | const char *rvalue, | |
1195 | void *data, | |
1196 | void *userdata) { | |
1197 | ||
1198 | uint64_t *sz = data, parsed; | |
1199 | int r; | |
1200 | ||
1201 | assert(rvalue); | |
1202 | assert(data); | |
1203 | ||
1204 | r = parse_size(rvalue, 1024, &parsed); | |
1205 | if (r < 0) | |
c8f3d767 | 1206 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1207 | "Failed to parse size value: %s", rvalue); |
1208 | ||
1209 | if (ltype > 0) | |
1210 | *sz = round_up_size(parsed, 4096); | |
1211 | else if (ltype < 0) | |
1212 | *sz = round_down_size(parsed, 4096); | |
1213 | else | |
1214 | *sz = parsed; | |
1215 | ||
1216 | if (*sz != parsed) | |
e2341b6b DT |
1217 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.", |
1218 | lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz); | |
e594a3b1 LP |
1219 | |
1220 | return 0; | |
1221 | } | |
1222 | ||
53171c04 LP |
1223 | static int config_parse_fstype( |
1224 | const char *unit, | |
1225 | const char *filename, | |
1226 | unsigned line, | |
1227 | const char *section, | |
1228 | unsigned section_line, | |
1229 | const char *lvalue, | |
1230 | int ltype, | |
1231 | const char *rvalue, | |
1232 | void *data, | |
1233 | void *userdata) { | |
1234 | ||
99534007 | 1235 | char **fstype = ASSERT_PTR(data); |
53171c04 LP |
1236 | |
1237 | assert(rvalue); | |
53171c04 LP |
1238 | |
1239 | if (!filename_is_valid(rvalue)) | |
1240 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1241 | "File system type is not valid, refusing: %s", rvalue); | |
1242 | ||
1243 | return free_and_strdup_warn(fstype, rvalue); | |
1244 | } | |
1245 | ||
8a794850 LP |
1246 | static int config_parse_copy_files( |
1247 | const char *unit, | |
1248 | const char *filename, | |
1249 | unsigned line, | |
1250 | const char *section, | |
1251 | unsigned section_line, | |
1252 | const char *lvalue, | |
1253 | int ltype, | |
1254 | const char *rvalue, | |
1255 | void *data, | |
1256 | void *userdata) { | |
1257 | ||
1258 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1259 | const char *p = rvalue, *target; | |
99534007 | 1260 | Partition *partition = ASSERT_PTR(data); |
8a794850 LP |
1261 | int r; |
1262 | ||
1263 | assert(rvalue); | |
8a794850 LP |
1264 | |
1265 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1266 | if (r < 0) | |
1267 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1268 | if (r == 0) { | |
1269 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1274 | if (r < 0) | |
1275 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1276 | if (r == 0) | |
1277 | target = source; /* No target, then it's the same as the source */ | |
1278 | else | |
1279 | target = buffer; | |
1280 | ||
1281 | if (!isempty(p)) | |
1282 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1283 | ||
de61a04b | 1284 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source); |
8a794850 LP |
1285 | if (r < 0) { |
1286 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1287 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1288 | return 0; | |
1289 | } | |
1290 | ||
0ade2213 LP |
1291 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1292 | if (r < 0) | |
8a794850 | 1293 | return 0; |
8a794850 | 1294 | |
de61a04b | 1295 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target); |
8a794850 LP |
1296 | if (r < 0) { |
1297 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1298 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1299 | return 0; | |
1300 | } | |
1301 | ||
0ade2213 LP |
1302 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1303 | if (r < 0) | |
8a794850 | 1304 | return 0; |
8a794850 LP |
1305 | |
1306 | r = strv_consume_pair(&partition->copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); | |
1307 | if (r < 0) | |
1308 | return log_oom(); | |
1309 | ||
1310 | return 0; | |
1311 | } | |
1312 | ||
5c08da58 LP |
1313 | static int config_parse_copy_blocks( |
1314 | const char *unit, | |
1315 | const char *filename, | |
1316 | unsigned line, | |
1317 | const char *section, | |
1318 | unsigned section_line, | |
1319 | const char *lvalue, | |
1320 | int ltype, | |
1321 | const char *rvalue, | |
1322 | void *data, | |
1323 | void *userdata) { | |
1324 | ||
1325 | _cleanup_free_ char *d = NULL; | |
99534007 | 1326 | Partition *partition = ASSERT_PTR(data); |
5c08da58 LP |
1327 | int r; |
1328 | ||
1329 | assert(rvalue); | |
5c08da58 LP |
1330 | |
1331 | if (isempty(rvalue)) { | |
1332 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1333 | partition->copy_blocks_auto = false; | |
1334 | return 0; | |
1335 | } | |
1336 | ||
1337 | if (streq(rvalue, "auto")) { | |
1338 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1339 | partition->copy_blocks_auto = true; | |
1340 | return 0; | |
1341 | } | |
1342 | ||
de61a04b | 1343 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
5c08da58 LP |
1344 | if (r < 0) { |
1345 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1346 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1347 | return 0; | |
1348 | } | |
1349 | ||
1350 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1351 | if (r < 0) | |
1352 | return 0; | |
1353 | ||
1354 | free_and_replace(partition->copy_blocks_path, d); | |
1355 | partition->copy_blocks_auto = false; | |
1356 | return 0; | |
1357 | } | |
1358 | ||
d83d8048 LP |
1359 | static int config_parse_make_dirs( |
1360 | const char *unit, | |
1361 | const char *filename, | |
1362 | unsigned line, | |
1363 | const char *section, | |
1364 | unsigned section_line, | |
1365 | const char *lvalue, | |
1366 | int ltype, | |
1367 | const char *rvalue, | |
1368 | void *data, | |
1369 | void *userdata) { | |
1370 | ||
99534007 DT |
1371 | Partition *partition = ASSERT_PTR(data); |
1372 | const char *p = ASSERT_PTR(rvalue); | |
d83d8048 LP |
1373 | int r; |
1374 | ||
d83d8048 LP |
1375 | for (;;) { |
1376 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1377 | ||
1378 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1379 | if (r == -ENOMEM) | |
1380 | return log_oom(); | |
1381 | if (r < 0) { | |
1382 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1383 | return 0; | |
1384 | } | |
1385 | if (r == 0) | |
1386 | return 0; | |
1387 | ||
de61a04b | 1388 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
d83d8048 LP |
1389 | if (r < 0) { |
1390 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1391 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1392 | continue; | |
1393 | } | |
1394 | ||
1395 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1396 | if (r < 0) | |
1397 | continue; | |
1398 | ||
1399 | r = strv_consume(&partition->make_directories, TAKE_PTR(d)); | |
1400 | if (r < 0) | |
1401 | return log_oom(); | |
1402 | } | |
1403 | } | |
1404 | ||
889914ef LP |
1405 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1406 | ||
e73309c5 LP |
1407 | static int config_parse_gpt_flags( |
1408 | const char *unit, | |
1409 | const char *filename, | |
1410 | unsigned line, | |
1411 | const char *section, | |
1412 | unsigned section_line, | |
1413 | const char *lvalue, | |
1414 | int ltype, | |
1415 | const char *rvalue, | |
1416 | void *data, | |
1417 | void *userdata) { | |
1418 | ||
99534007 | 1419 | uint64_t *gpt_flags = ASSERT_PTR(data); |
e73309c5 LP |
1420 | int r; |
1421 | ||
1422 | assert(rvalue); | |
e73309c5 LP |
1423 | |
1424 | r = safe_atou64(rvalue, gpt_flags); | |
1425 | if (r < 0) { | |
1426 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1427 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1428 | return 0; | |
1429 | } | |
1430 | ||
1431 | return 0; | |
1432 | } | |
1433 | ||
11749b61 DDM |
1434 | static int config_parse_uuid( |
1435 | const char *unit, | |
1436 | const char *filename, | |
1437 | unsigned line, | |
1438 | const char *section, | |
1439 | unsigned section_line, | |
1440 | const char *lvalue, | |
1441 | int ltype, | |
1442 | const char *rvalue, | |
1443 | void *data, | |
1444 | void *userdata) { | |
1445 | ||
1446 | Partition *partition = ASSERT_PTR(data); | |
1447 | int r; | |
1448 | ||
1449 | if (isempty(rvalue)) { | |
1450 | partition->new_uuid = SD_ID128_NULL; | |
1451 | partition->new_uuid_is_set = false; | |
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | if (streq(rvalue, "null")) { | |
1456 | partition->new_uuid = SD_ID128_NULL; | |
1457 | partition->new_uuid_is_set = true; | |
1458 | return 0; | |
1459 | } | |
1460 | ||
1461 | r = sd_id128_from_string(rvalue, &partition->new_uuid); | |
1462 | if (r < 0) { | |
1463 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue); | |
1464 | return 0; | |
1465 | } | |
1466 | ||
1467 | partition->new_uuid_is_set = true; | |
1468 | ||
1469 | return 0; | |
1470 | } | |
1471 | ||
b5b7879a DDM |
1472 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF, "Invalid verity mode"); |
1473 | ||
39fc0174 | 1474 | static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) { |
e594a3b1 LP |
1475 | |
1476 | ConfigTableItem table[] = { | |
4cee8333 DDM |
1477 | { "Partition", "Type", config_parse_type, 0, &p->type_uuid }, |
1478 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, | |
1479 | { "Partition", "UUID", config_parse_uuid, 0, p }, | |
1480 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, | |
1481 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1482 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1483 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1484 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1485 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1486 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1487 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1488 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1489 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1490 | { "Partition", "CopyFiles", config_parse_copy_files, 0, p }, | |
1491 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, p }, | |
1492 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
1493 | { "Partition", "Verity", config_parse_verity, 0, &p->verity }, | |
1494 | { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key }, | |
1495 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, | |
1496 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
1497 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, | |
1498 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, | |
1499 | { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format }, | |
e594a3b1 LP |
1500 | {} |
1501 | }; | |
1502 | int r; | |
39fc0174 RP |
1503 | _cleanup_free_ char *filename = NULL; |
1504 | const char* dropin_dirname; | |
e594a3b1 | 1505 | |
39fc0174 RP |
1506 | r = path_extract_filename(path, &filename); |
1507 | if (r < 0) | |
1508 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path);; | |
1509 | ||
1510 | dropin_dirname = strjoina(filename, ".d"); | |
1511 | ||
1512 | r = config_parse_many( | |
1513 | STRV_MAKE_CONST(path), | |
1514 | conf_file_dirs, | |
1515 | dropin_dirname, | |
1516 | "Partition\0", | |
1517 | config_item_table_lookup, table, | |
1518 | CONFIG_PARSE_WARN, | |
1519 | p, | |
1520 | NULL, | |
1521 | &p->drop_in_files); | |
e594a3b1 LP |
1522 | if (r < 0) |
1523 | return r; | |
1524 | ||
1525 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) | |
1526 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1527 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1528 | ||
1529 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1530 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1531 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1532 | ||
1533 | if (sd_id128_is_null(p->type_uuid)) | |
1534 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1535 | "Type= not defined, refusing."); | |
1536 | ||
5c08da58 LP |
1537 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1538 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
53171c04 | 1539 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5c08da58 | 1540 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); |
53171c04 | 1541 | |
d83d8048 | 1542 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1543 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1544 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1545 | ||
5c08da58 | 1546 | 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 | 1547 | /* Pick "ext4" as file system if we are configured to copy files or encrypt the device */ |
8a794850 LP |
1548 | p->format = strdup("ext4"); |
1549 | if (!p->format) | |
1550 | return log_oom(); | |
1551 | } | |
1552 | ||
b5b7879a DDM |
1553 | if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) { |
1554 | r = dlopen_cryptsetup(); | |
1555 | if (r < 0) | |
1556 | return log_syntax(NULL, LOG_ERR, path, 1, r, | |
1557 | "libcryptsetup not found, Verity=/Encrypt= are not supported: %m"); | |
1558 | } | |
1559 | ||
1560 | if (p->verity != VERITY_OFF && !p->verity_match_key) | |
1561 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1562 | "VerityMatchKey= must be set if Verity=%s", verity_mode_to_string(p->verity)); | |
1563 | ||
1564 | if (p->verity == VERITY_OFF && p->verity_match_key) | |
1565 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1566 | "VerityMatchKey= can only be set if Verity= is not \"%s\"", | |
1567 | verity_mode_to_string(p->verity)); | |
1568 | ||
b456191d DDM |
1569 | if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && |
1570 | (p->copy_files || p->copy_blocks_path || p->copy_blocks_auto || p->format || p->make_directories)) | |
b5b7879a DDM |
1571 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1572 | "CopyBlocks=/CopyFiles=/Format=/MakeDirectories= cannot be used with Verity=%s", | |
1573 | verity_mode_to_string(p->verity)); | |
1574 | ||
1575 | if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF) | |
1576 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1577 | "Encrypting verity hash/data partitions is not supported"); | |
1578 | ||
b456191d DDM |
1579 | if (p->verity == VERITY_SIG && !arg_private_key) |
1580 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1581 | "Verity signature partition requested but no private key provided (--private-key=)"); | |
1582 | ||
1583 | if (p->verity == VERITY_SIG && !arg_certificate) | |
1584 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
ba4a5eff | 1585 | "Verity signature partition requested but no PEM certificate provided (--certificate=)"); |
b456191d DDM |
1586 | |
1587 | if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX)) | |
1588 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1589 | "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s", | |
1590 | verity_mode_to_string(p->verity)); | |
1591 | ||
e73309c5 LP |
1592 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
1593 | if ((gpt_partition_type_is_root_verity(p->type_uuid) || | |
1594 | gpt_partition_type_is_usr_verity(p->type_uuid)) && | |
1595 | p->read_only < 0) | |
1596 | p->read_only = true; | |
1597 | ||
1c41c1dc LP |
1598 | /* Default to "growfs" on, unless read-only */ |
1599 | if (gpt_partition_type_knows_growfs(p->type_uuid) && | |
1600 | p->read_only <= 0) | |
1601 | p->growfs = true; | |
1602 | ||
4cee8333 DDM |
1603 | if (!p->split_name_format) { |
1604 | char *s = strdup("%t"); | |
1605 | if (!s) | |
1606 | return log_oom(); | |
1607 | ||
1608 | p->split_name_format = s; | |
1609 | } else if (streq(p->split_name_format, "-")) | |
1610 | p->split_name_format = mfree(p->split_name_format); | |
1611 | ||
e594a3b1 LP |
1612 | return 0; |
1613 | } | |
1614 | ||
b5b7879a DDM |
1615 | static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) { |
1616 | Partition *s = NULL; | |
1617 | ||
1618 | assert(p); | |
1619 | assert(p->verity != VERITY_OFF); | |
1620 | assert(p->verity_match_key); | |
1621 | assert(mode != VERITY_OFF); | |
1622 | assert(p->verity != mode); | |
1623 | assert(ret); | |
1624 | ||
1625 | /* Try to find the matching sibling partition of the given type for a verity partition. For a data | |
af3d3873 YW |
1626 | * partition, this is the corresponding hash partition with the same verity name (and vice versa for |
1627 | * the hash partition). */ | |
b5b7879a DDM |
1628 | |
1629 | LIST_FOREACH(partitions, q, context->partitions) { | |
1630 | if (p == q) | |
1631 | continue; | |
1632 | ||
1633 | if (q->verity != mode) | |
1634 | continue; | |
1635 | ||
1636 | assert(q->verity_match_key); | |
1637 | ||
1638 | if (!streq(p->verity_match_key, q->verity_match_key)) | |
1639 | continue; | |
1640 | ||
1641 | if (s) | |
1642 | return -ENOTUNIQ; | |
1643 | ||
1644 | s = q; | |
1645 | } | |
1646 | ||
1647 | if (!s) | |
1648 | return -ENXIO; | |
1649 | ||
1650 | *ret = s; | |
1651 | ||
1652 | return 0; | |
1653 | } | |
1654 | ||
e594a3b1 LP |
1655 | static int context_read_definitions( |
1656 | Context *context, | |
224c853f | 1657 | char **directories, |
e594a3b1 LP |
1658 | const char *root) { |
1659 | ||
1660 | _cleanup_strv_free_ char **files = NULL; | |
1661 | Partition *last = NULL; | |
e594a3b1 | 1662 | int r; |
39fc0174 | 1663 | const char *const *dirs; |
e594a3b1 LP |
1664 | |
1665 | assert(context); | |
1666 | ||
224c853f | 1667 | dirs = (const char* const*) (directories ?: CONF_PATHS_STRV("repart.d")); |
39fc0174 | 1668 | |
224c853f | 1669 | r = conf_files_list_strv(&files, ".conf", directories ? NULL : root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs); |
e594a3b1 LP |
1670 | if (r < 0) |
1671 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
1672 | ||
1673 | STRV_FOREACH(f, files) { | |
1674 | _cleanup_(partition_freep) Partition *p = NULL; | |
1675 | ||
1676 | p = partition_new(); | |
1677 | if (!p) | |
1678 | return log_oom(); | |
1679 | ||
1680 | p->definition_path = strdup(*f); | |
1681 | if (!p->definition_path) | |
1682 | return log_oom(); | |
1683 | ||
39fc0174 | 1684 | r = partition_read_definition(p, *f, dirs); |
e594a3b1 LP |
1685 | if (r < 0) |
1686 | return r; | |
1687 | ||
1688 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
1689 | last = TAKE_PTR(p); | |
1690 | context->n_partitions++; | |
1691 | } | |
1692 | ||
b5b7879a DDM |
1693 | /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */ |
1694 | ||
1695 | LIST_FOREACH(partitions, p, context->partitions) { | |
1696 | if (p->verity == VERITY_OFF) | |
1697 | continue; | |
1698 | ||
1699 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
b456191d | 1700 | Partition *q = NULL; |
b5b7879a DDM |
1701 | |
1702 | if (p->verity == mode) | |
1703 | continue; | |
1704 | ||
1705 | if (p->siblings[mode]) | |
1706 | continue; | |
1707 | ||
1708 | r = find_verity_sibling(context, p, mode, &q); | |
8e52ed02 DDM |
1709 | if (r == -ENXIO) { |
1710 | if (mode != VERITY_SIG) | |
1711 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1712 | "Missing verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1713 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
1714 | } else if (r == -ENOTUNIQ) | |
b5b7879a DDM |
1715 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), |
1716 | "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s", | |
1717 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
8e52ed02 DDM |
1718 | else if (r < 0) |
1719 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r, | |
1720 | "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1721 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
b5b7879a | 1722 | |
b456191d DDM |
1723 | if (q) { |
1724 | if (q->priority != p->priority) | |
1725 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1726 | "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s", | |
1727 | p->priority, q->priority, p->verity_match_key); | |
b5b7879a | 1728 | |
b456191d DDM |
1729 | p->siblings[mode] = q; |
1730 | } | |
b5b7879a DDM |
1731 | } |
1732 | } | |
1733 | ||
e594a3b1 LP |
1734 | return 0; |
1735 | } | |
1736 | ||
e594a3b1 LP |
1737 | static int determine_current_padding( |
1738 | struct fdisk_context *c, | |
1739 | struct fdisk_table *t, | |
1740 | struct fdisk_partition *p, | |
994b3031 LP |
1741 | uint64_t secsz, |
1742 | uint64_t grainsz, | |
e594a3b1 LP |
1743 | uint64_t *ret) { |
1744 | ||
1745 | size_t n_partitions; | |
1746 | uint64_t offset, next = UINT64_MAX; | |
1747 | ||
1748 | assert(c); | |
1749 | assert(t); | |
1750 | assert(p); | |
1751 | ||
1752 | if (!fdisk_partition_has_end(p)) | |
1753 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1754 | ||
1755 | offset = fdisk_partition_get_end(p); | |
994b3031 LP |
1756 | assert(offset < UINT64_MAX / secsz); |
1757 | offset *= secsz; | |
e594a3b1 LP |
1758 | |
1759 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 1760 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 LP |
1761 | struct fdisk_partition *q; |
1762 | uint64_t start; | |
1763 | ||
1764 | q = fdisk_table_get_partition(t, i); | |
1765 | if (!q) | |
1766 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1767 | ||
1768 | if (fdisk_partition_is_used(q) <= 0) | |
1769 | continue; | |
1770 | ||
1771 | if (!fdisk_partition_has_start(q)) | |
1772 | continue; | |
1773 | ||
1774 | start = fdisk_partition_get_start(q); | |
994b3031 LP |
1775 | assert(start < UINT64_MAX / secsz); |
1776 | start *= secsz; | |
e594a3b1 LP |
1777 | |
1778 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1779 | next = start; | |
1780 | } | |
1781 | ||
1782 | if (next == UINT64_MAX) { | |
1783 | /* No later partition? In that case check the end of the usable area */ | |
1784 | next = fdisk_get_last_lba(c); | |
1785 | assert(next < UINT64_MAX); | |
1786 | next++; /* The last LBA is one sector before the end */ | |
1787 | ||
994b3031 LP |
1788 | assert(next < UINT64_MAX / secsz); |
1789 | next *= secsz; | |
e594a3b1 LP |
1790 | |
1791 | if (offset > next) | |
1792 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1793 | } | |
1794 | ||
1795 | assert(next >= offset); | |
994b3031 LP |
1796 | offset = round_up_size(offset, grainsz); |
1797 | next = round_down_size(next, grainsz); | |
e594a3b1 | 1798 | |
a6f44d61 | 1799 | *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */ |
e594a3b1 LP |
1800 | return 0; |
1801 | } | |
1802 | ||
1803 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { | |
1804 | _cleanup_free_ char *ids = NULL; | |
1805 | int r; | |
1806 | ||
1807 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
1808 | return -EINVAL; | |
1809 | ||
b7416360 | 1810 | ids = new(char, SD_ID128_UUID_STRING_MAX); |
e594a3b1 LP |
1811 | if (!ids) |
1812 | return -ENOMEM; | |
1813 | ||
b7416360 | 1814 | r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids)); |
e594a3b1 LP |
1815 | if (r < 0) |
1816 | return r; | |
1817 | ||
1818 | TAKE_PTR(ids); | |
1819 | return 0; | |
1820 | } | |
1821 | ||
1822 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
1823 | int r; | |
1824 | ||
1825 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
1826 | if (r < 0) | |
1827 | return r; | |
1828 | ||
1829 | r = fdisk_set_disklabel_id(c); | |
1830 | if (r < 0) | |
1831 | return r; | |
1832 | ||
1833 | return fdisk_set_ask(c, NULL, NULL); | |
1834 | } | |
1835 | ||
53171c04 | 1836 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 | 1837 | union { |
ade99252 | 1838 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
1839 | sd_id128_t id; |
1840 | } result; | |
1841 | ||
53171c04 | 1842 | assert(token); |
e594a3b1 LP |
1843 | assert(ret); |
1844 | ||
53171c04 LP |
1845 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
1846 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
1847 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
1848 | * the machine ID we don't want to leak. */ | |
e594a3b1 | 1849 | |
ade99252 | 1850 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md); |
e594a3b1 LP |
1851 | |
1852 | /* Take the first half, mark it as v4 UUID */ | |
1853 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
1854 | *ret = id128_make_v4_uuid(result.id); | |
1855 | return 0; | |
1856 | } | |
1857 | ||
a26f4a49 LP |
1858 | static int context_load_partition_table( |
1859 | Context *context, | |
1860 | const char *node, | |
1861 | int *backing_fd) { | |
1862 | ||
e594a3b1 LP |
1863 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
1864 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
1865 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
1866 | _cleanup_free_ char *disk_uuid_string = NULL; | |
1867 | bool from_scratch = false; | |
1868 | sd_id128_t disk_uuid; | |
1869 | size_t n_partitions; | |
994b3031 LP |
1870 | unsigned long secsz; |
1871 | uint64_t grainsz; | |
e594a3b1 LP |
1872 | int r; |
1873 | ||
1874 | assert(context); | |
1875 | assert(node); | |
a26f4a49 | 1876 | assert(backing_fd); |
170c9823 LP |
1877 | assert(!context->fdisk_context); |
1878 | assert(!context->free_areas); | |
1879 | assert(context->start == UINT64_MAX); | |
1880 | assert(context->end == UINT64_MAX); | |
1881 | assert(context->total == UINT64_MAX); | |
e594a3b1 LP |
1882 | |
1883 | c = fdisk_new_context(); | |
1884 | if (!c) | |
1885 | return log_oom(); | |
1886 | ||
a26f4a49 LP |
1887 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
1888 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
1889 | if (*backing_fd < 0) | |
1890 | r = fdisk_assign_device(c, node, arg_dry_run); | |
ddb6eeaf LP |
1891 | else |
1892 | r = fdisk_assign_device(c, FORMAT_PROC_FD_PATH(*backing_fd), arg_dry_run); | |
170c9823 LP |
1893 | if (r == -EINVAL && arg_size_auto) { |
1894 | struct stat st; | |
1895 | ||
1896 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
1897 | * it if automatic sizing is requested. */ | |
1898 | ||
1899 | if (*backing_fd < 0) | |
1900 | r = stat(node, &st); | |
1901 | else | |
1902 | r = fstat(*backing_fd, &st); | |
1903 | if (r < 0) | |
1904 | return log_error_errno(errno, "Failed to stat block device '%s': %m", node); | |
1905 | ||
994b3031 LP |
1906 | if (S_ISREG(st.st_mode) && st.st_size == 0) { |
1907 | /* User the fallback values if we have no better idea */ | |
1908 | context->sector_size = 512; | |
1909 | context->grain_size = 4096; | |
170c9823 | 1910 | return /* from_scratch = */ true; |
994b3031 | 1911 | } |
170c9823 LP |
1912 | |
1913 | r = -EINVAL; | |
1914 | } | |
e594a3b1 | 1915 | if (r < 0) |
a26f4a49 LP |
1916 | return log_error_errno(r, "Failed to open device '%s': %m", node); |
1917 | ||
1918 | if (*backing_fd < 0) { | |
1919 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ | |
38f81e93 | 1920 | *backing_fd = fd_reopen(fdisk_get_devfd(c), O_RDONLY|O_CLOEXEC); |
a26f4a49 | 1921 | if (*backing_fd < 0) |
38f81e93 | 1922 | return log_error_errno(*backing_fd, "Failed to duplicate fdisk fd: %m"); |
e594a3b1 | 1923 | |
25baae50 DDM |
1924 | /* Tell udev not to interfere while we are processing the device */ |
1925 | if (flock(*backing_fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
1926 | return log_error_errno(errno, "Failed to lock block device: %m"); | |
1927 | } | |
e594a3b1 | 1928 | |
994b3031 LP |
1929 | /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the |
1930 | * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use | |
1931 | * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean | |
1932 | * the same thing universally. Also note that regardless what kind of sector size is in use we'll | |
1933 | * place partitions at multiples of 4K. */ | |
1934 | secsz = fdisk_get_sector_size(c); | |
1935 | ||
1936 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
983ce0b5 LP |
1937 | if (secsz < 512 || !ISPOWEROF2(secsz)) |
1938 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
994b3031 LP |
1939 | |
1940 | /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or | |
1941 | * larger */ | |
1942 | grainsz = secsz < 4096 ? 4096 : secsz; | |
1943 | ||
1944 | log_debug("Sector size of device is %lu bytes. Using grain size of %" PRIu64 ".", secsz, grainsz); | |
1945 | ||
e594a3b1 LP |
1946 | switch (arg_empty) { |
1947 | ||
1948 | case EMPTY_REFUSE: | |
1949 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
1950 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
1951 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", node); | |
1952 | ||
1953 | break; | |
1954 | ||
1955 | case EMPTY_REQUIRE: | |
1956 | /* Require an empty disk, refuse any existing partition table */ | |
1957 | r = fdisk_has_label(c); | |
1958 | if (r < 0) | |
1959 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
1960 | if (r > 0) | |
1961 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", node); | |
1962 | ||
1963 | from_scratch = true; | |
1964 | break; | |
1965 | ||
1966 | case EMPTY_ALLOW: | |
1967 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
1968 | r = fdisk_has_label(c); | |
1969 | if (r < 0) | |
1970 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
1971 | if (r > 0) { | |
1972 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
1973 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", node); | |
1974 | } else | |
1975 | from_scratch = true; | |
1976 | ||
1977 | break; | |
1978 | ||
1979 | case EMPTY_FORCE: | |
a26f4a49 | 1980 | case EMPTY_CREATE: |
e594a3b1 LP |
1981 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
1982 | from_scratch = true; | |
1983 | break; | |
1984 | } | |
1985 | ||
1986 | if (from_scratch) { | |
e594a3b1 LP |
1987 | r = fdisk_create_disklabel(c, "gpt"); |
1988 | if (r < 0) | |
1989 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
1990 | ||
53171c04 | 1991 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
1992 | if (r < 0) |
1993 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
1994 | ||
1995 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
1996 | if (r < 0) | |
1997 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
1998 | ||
1999 | goto add_initial_free_area; | |
2000 | } | |
2001 | ||
2002 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
2003 | if (r < 0) | |
2004 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
2005 | ||
2006 | r = sd_id128_from_string(disk_uuid_string, &disk_uuid); | |
2007 | if (r < 0) | |
2008 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
2009 | ||
2010 | if (sd_id128_is_null(disk_uuid)) { | |
53171c04 | 2011 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2012 | if (r < 0) |
2013 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2014 | ||
2015 | r = fdisk_set_disklabel_id(c); | |
2016 | if (r < 0) | |
2017 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2018 | } | |
2019 | ||
2020 | r = fdisk_get_partitions(c, &t); | |
2021 | if (r < 0) | |
2022 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
2023 | ||
2024 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 2025 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 | 2026 | _cleanup_free_ char *label_copy = NULL; |
03677889 | 2027 | Partition *last = NULL; |
e594a3b1 LP |
2028 | struct fdisk_partition *p; |
2029 | struct fdisk_parttype *pt; | |
2030 | const char *pts, *ids, *label; | |
2031 | uint64_t sz, start; | |
2032 | bool found = false; | |
2033 | sd_id128_t ptid, id; | |
2034 | size_t partno; | |
2035 | ||
2036 | p = fdisk_table_get_partition(t, i); | |
2037 | if (!p) | |
2038 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
2039 | ||
2040 | if (fdisk_partition_is_used(p) <= 0) | |
2041 | continue; | |
2042 | ||
2043 | if (fdisk_partition_has_start(p) <= 0 || | |
2044 | fdisk_partition_has_size(p) <= 0 || | |
2045 | fdisk_partition_has_partno(p) <= 0) | |
2046 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
2047 | ||
2048 | pt = fdisk_partition_get_type(p); | |
2049 | if (!pt) | |
2050 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition: %m"); | |
2051 | ||
2052 | pts = fdisk_parttype_get_string(pt); | |
2053 | if (!pts) | |
2054 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition as string: %m"); | |
2055 | ||
2056 | r = sd_id128_from_string(pts, &ptid); | |
2057 | if (r < 0) | |
2058 | return log_error_errno(r, "Failed to parse partition type UUID %s: %m", pts); | |
2059 | ||
2060 | ids = fdisk_partition_get_uuid(p); | |
2061 | if (!ids) | |
2062 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a UUID."); | |
2063 | ||
2064 | r = sd_id128_from_string(ids, &id); | |
2065 | if (r < 0) | |
2066 | return log_error_errno(r, "Failed to parse partition UUID %s: %m", ids); | |
2067 | ||
2068 | label = fdisk_partition_get_name(p); | |
2069 | if (!isempty(label)) { | |
2070 | label_copy = strdup(label); | |
2071 | if (!label_copy) | |
2072 | return log_oom(); | |
2073 | } | |
2074 | ||
2075 | sz = fdisk_partition_get_size(p); | |
ac33e147 | 2076 | assert(sz <= UINT64_MAX/secsz); |
994b3031 | 2077 | sz *= secsz; |
e594a3b1 LP |
2078 | |
2079 | start = fdisk_partition_get_start(p); | |
ac33e147 | 2080 | assert(start <= UINT64_MAX/secsz); |
994b3031 | 2081 | start *= secsz; |
e594a3b1 LP |
2082 | |
2083 | partno = fdisk_partition_get_partno(p); | |
2084 | ||
2085 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
2086 | left_boundary = start; | |
2087 | ||
2088 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
2089 | * an existing one assigned yet. */ | |
2090 | LIST_FOREACH(partitions, pp, context->partitions) { | |
2091 | last = pp; | |
2092 | ||
2093 | if (!sd_id128_equal(pp->type_uuid, ptid)) | |
2094 | continue; | |
2095 | ||
2096 | if (!pp->current_partition) { | |
2097 | pp->current_uuid = id; | |
2098 | pp->current_size = sz; | |
2099 | pp->offset = start; | |
2100 | pp->partno = partno; | |
2101 | pp->current_label = TAKE_PTR(label_copy); | |
2102 | ||
2103 | pp->current_partition = p; | |
2104 | fdisk_ref_partition(p); | |
2105 | ||
994b3031 | 2106 | r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding); |
e594a3b1 LP |
2107 | if (r < 0) |
2108 | return r; | |
2109 | ||
2110 | if (pp->current_padding > 0) { | |
2111 | r = context_add_free_area(context, pp->current_padding, pp); | |
2112 | if (r < 0) | |
2113 | return r; | |
2114 | } | |
2115 | ||
2116 | found = true; | |
2117 | break; | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | /* If we have no matching definition, create a new one. */ | |
2122 | if (!found) { | |
2123 | _cleanup_(partition_freep) Partition *np = NULL; | |
2124 | ||
2125 | np = partition_new(); | |
2126 | if (!np) | |
2127 | return log_oom(); | |
2128 | ||
2129 | np->current_uuid = id; | |
2130 | np->type_uuid = ptid; | |
2131 | np->current_size = sz; | |
2132 | np->offset = start; | |
2133 | np->partno = partno; | |
2134 | np->current_label = TAKE_PTR(label_copy); | |
2135 | ||
2136 | np->current_partition = p; | |
2137 | fdisk_ref_partition(p); | |
2138 | ||
994b3031 | 2139 | r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding); |
e594a3b1 LP |
2140 | if (r < 0) |
2141 | return r; | |
2142 | ||
2143 | if (np->current_padding > 0) { | |
2144 | r = context_add_free_area(context, np->current_padding, np); | |
2145 | if (r < 0) | |
2146 | return r; | |
2147 | } | |
2148 | ||
2149 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
2150 | context->n_partitions++; | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | add_initial_free_area: | |
2155 | nsectors = fdisk_get_nsectors(c); | |
994b3031 LP |
2156 | assert(nsectors <= UINT64_MAX/secsz); |
2157 | nsectors *= secsz; | |
e594a3b1 LP |
2158 | |
2159 | first_lba = fdisk_get_first_lba(c); | |
994b3031 LP |
2160 | assert(first_lba <= UINT64_MAX/secsz); |
2161 | first_lba *= secsz; | |
e594a3b1 LP |
2162 | |
2163 | last_lba = fdisk_get_last_lba(c); | |
2164 | assert(last_lba < UINT64_MAX); | |
2165 | last_lba++; | |
994b3031 LP |
2166 | assert(last_lba <= UINT64_MAX/secsz); |
2167 | last_lba *= secsz; | |
e594a3b1 LP |
2168 | |
2169 | assert(last_lba >= first_lba); | |
2170 | ||
2171 | if (left_boundary == UINT64_MAX) { | |
2172 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
2173 | ||
994b3031 LP |
2174 | first_lba = round_up_size(first_lba, grainsz); |
2175 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2176 | |
2177 | if (last_lba > first_lba) { | |
2178 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
2179 | if (r < 0) | |
2180 | return r; | |
2181 | } | |
2182 | } else { | |
2183 | /* Add space left of first partition */ | |
2184 | assert(left_boundary >= first_lba); | |
2185 | ||
994b3031 LP |
2186 | first_lba = round_up_size(first_lba, grainsz); |
2187 | left_boundary = round_down_size(left_boundary, grainsz); | |
2188 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2189 | |
2190 | if (left_boundary > first_lba) { | |
2191 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
2192 | if (r < 0) | |
2193 | return r; | |
2194 | } | |
2195 | } | |
2196 | ||
2197 | context->start = first_lba; | |
2198 | context->end = last_lba; | |
2199 | context->total = nsectors; | |
994b3031 LP |
2200 | context->sector_size = secsz; |
2201 | context->grain_size = grainsz; | |
e594a3b1 LP |
2202 | context->fdisk_context = TAKE_PTR(c); |
2203 | ||
2204 | return from_scratch; | |
2205 | } | |
2206 | ||
2207 | static void context_unload_partition_table(Context *context) { | |
e594a3b1 LP |
2208 | assert(context); |
2209 | ||
80a226b2 | 2210 | LIST_FOREACH(partitions, p, context->partitions) { |
e594a3b1 LP |
2211 | |
2212 | /* Entirely remove partitions that have no configuration */ | |
2213 | if (PARTITION_IS_FOREIGN(p)) { | |
2214 | partition_unlink_and_free(context, p); | |
2215 | continue; | |
2216 | } | |
2217 | ||
2218 | /* Otherwise drop all data we read off the block device and everything we might have | |
2219 | * calculated based on it */ | |
2220 | ||
2221 | p->dropped = false; | |
2222 | p->current_size = UINT64_MAX; | |
2223 | p->new_size = UINT64_MAX; | |
2224 | p->current_padding = UINT64_MAX; | |
2225 | p->new_padding = UINT64_MAX; | |
2226 | p->partno = UINT64_MAX; | |
2227 | p->offset = UINT64_MAX; | |
2228 | ||
2229 | if (p->current_partition) { | |
2230 | fdisk_unref_partition(p->current_partition); | |
2231 | p->current_partition = NULL; | |
2232 | } | |
2233 | ||
2234 | if (p->new_partition) { | |
2235 | fdisk_unref_partition(p->new_partition); | |
2236 | p->new_partition = NULL; | |
2237 | } | |
2238 | ||
2239 | p->padding_area = NULL; | |
2240 | p->allocated_to_area = NULL; | |
2241 | ||
15d43e30 LP |
2242 | p->current_uuid = SD_ID128_NULL; |
2243 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
2244 | } |
2245 | ||
2246 | context->start = UINT64_MAX; | |
2247 | context->end = UINT64_MAX; | |
2248 | context->total = UINT64_MAX; | |
2249 | ||
2250 | if (context->fdisk_context) { | |
2251 | fdisk_unref_context(context->fdisk_context); | |
2252 | context->fdisk_context = NULL; | |
2253 | } | |
2254 | ||
2255 | context_free_free_areas(context); | |
2256 | } | |
2257 | ||
2258 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
2b59bf51 | 2259 | char *t; |
e594a3b1 LP |
2260 | |
2261 | if (from != UINT64_MAX) { | |
2262 | if (from == to || to == UINT64_MAX) | |
2b59bf51 | 2263 | t = strdup(FORMAT_BYTES(from)); |
e594a3b1 | 2264 | else |
fc03e80c | 2265 | t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 | 2266 | } else if (to != UINT64_MAX) |
fc03e80c | 2267 | t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 LP |
2268 | else { |
2269 | *ret = NULL; | |
2270 | return 0; | |
2271 | } | |
2272 | ||
2b59bf51 | 2273 | if (!t) |
e594a3b1 LP |
2274 | return log_oom(); |
2275 | ||
2b59bf51 | 2276 | *ret = t; |
e594a3b1 LP |
2277 | return 1; |
2278 | } | |
2279 | ||
2280 | static const char *partition_label(const Partition *p) { | |
2281 | assert(p); | |
2282 | ||
2283 | if (p->new_label) | |
2284 | return p->new_label; | |
2285 | ||
2286 | if (p->current_label) | |
2287 | return p->current_label; | |
2288 | ||
2289 | return gpt_partition_type_uuid_to_string(p->type_uuid); | |
2290 | } | |
2291 | ||
2292 | static int context_dump_partitions(Context *context, const char *node) { | |
2293 | _cleanup_(table_unrefp) Table *t = NULL; | |
2294 | uint64_t sum_padding = 0, sum_size = 0; | |
e594a3b1 | 2295 | int r; |
b5b7879a DDM |
2296 | const size_t roothash_col = 13, dropin_files_col = 14; |
2297 | bool has_roothash = false, has_dropin_files = false; | |
e594a3b1 | 2298 | |
6a01ea4a | 2299 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
2300 | log_info("Empty partition table."); |
2301 | return 0; | |
2302 | } | |
2303 | ||
b5b7879a | 2304 | t = table_new("type", "label", "uuid", "file", "node", "offset", "old size", "raw size", "size", "old padding", "raw padding", "padding", "activity", "roothash", "drop-in files"); |
e594a3b1 LP |
2305 | if (!t) |
2306 | return log_oom(); | |
2307 | ||
a015fbe7 | 2308 | if (!DEBUG_LOGGING) { |
6a01ea4a | 2309 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 2310 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
b5b7879a | 2311 | (size_t) 8, (size_t) 11, roothash_col, dropin_files_col); |
a015fbe7 TH |
2312 | else |
2313 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
b5b7879a DDM |
2314 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 9, (size_t) 10, |
2315 | (size_t) 12, roothash_col, dropin_files_col); | |
a015fbe7 | 2316 | } |
e594a3b1 | 2317 | |
e594a3b1 | 2318 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
2319 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
2320 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
2321 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
2322 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
2323 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
2324 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
2325 | |
2326 | LIST_FOREACH(partitions, p, context->partitions) { | |
b5b7879a | 2327 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL; |
b7416360 | 2328 | char uuid_buffer[SD_ID128_UUID_STRING_MAX]; |
a015fbe7 | 2329 | const char *label, *activity = NULL; |
e594a3b1 LP |
2330 | |
2331 | if (p->dropped) | |
2332 | continue; | |
2333 | ||
a015fbe7 TH |
2334 | if (p->current_size == UINT64_MAX) |
2335 | activity = "create"; | |
2336 | else if (p->current_size != p->new_size) | |
2337 | activity = "resize"; | |
2338 | ||
e594a3b1 LP |
2339 | label = partition_label(p); |
2340 | partname = p->partno != UINT64_MAX ? fdisk_partname(node, p->partno+1) : NULL; | |
2341 | ||
2342 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2343 | if (r < 0) | |
2344 | return r; | |
2345 | ||
2346 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2347 | if (r < 0) | |
2348 | return r; | |
2349 | ||
2350 | if (p->new_size != UINT64_MAX) | |
2351 | sum_size += p->new_size; | |
2352 | if (p->new_padding != UINT64_MAX) | |
2353 | sum_padding += p->new_padding; | |
2354 | ||
b5b7879a DDM |
2355 | if (p->verity == VERITY_HASH) { |
2356 | rh = p->roothash ? hexmem(p->roothash, p->roothash_size) : strdup("TBD"); | |
2357 | if (!rh) | |
2358 | return log_oom(); | |
2359 | } | |
2360 | ||
e594a3b1 LP |
2361 | r = table_add_many( |
2362 | t, | |
2363 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type_uuid, uuid_buffer), | |
be9ce018 | 2364 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
11749b61 | 2365 | TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid, |
e594a3b1 | 2366 | TABLE_STRING, p->definition_path ? basename(p->definition_path) : "-", TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), |
a015fbe7 | 2367 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2368 | TABLE_UINT64, p->offset, |
a015fbe7 | 2369 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2370 | TABLE_UINT64, p->new_size, |
2371 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2372 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2373 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2374 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
39fc0174 | 2375 | TABLE_STRING, activity ?: "unchanged", |
b5b7879a | 2376 | TABLE_STRING, rh, |
39fc0174 | 2377 | TABLE_STRV, p->drop_in_files); |
e594a3b1 | 2378 | if (r < 0) |
f987a261 | 2379 | return table_log_add_error(r); |
39fc0174 | 2380 | |
b5b7879a | 2381 | has_roothash = has_roothash || !isempty(rh); |
3ab44dbd | 2382 | has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files); |
e594a3b1 LP |
2383 | } |
2384 | ||
6a01ea4a | 2385 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2386 | const char *a, *b; |
2387 | ||
2b59bf51 ZJS |
2388 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size)); |
2389 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding)); | |
e594a3b1 LP |
2390 | |
2391 | r = table_add_many( | |
2392 | t, | |
2393 | TABLE_EMPTY, | |
2394 | TABLE_EMPTY, | |
2395 | TABLE_EMPTY, | |
2396 | TABLE_EMPTY, | |
2397 | TABLE_EMPTY, | |
2398 | TABLE_EMPTY, | |
2399 | TABLE_EMPTY, | |
a015fbe7 | 2400 | TABLE_EMPTY, |
e594a3b1 LP |
2401 | TABLE_STRING, a, |
2402 | TABLE_EMPTY, | |
a015fbe7 TH |
2403 | TABLE_EMPTY, |
2404 | TABLE_STRING, b, | |
39fc0174 | 2405 | TABLE_EMPTY, |
b5b7879a | 2406 | TABLE_EMPTY, |
a015fbe7 | 2407 | TABLE_EMPTY); |
e594a3b1 | 2408 | if (r < 0) |
f987a261 | 2409 | return table_log_add_error(r); |
e594a3b1 LP |
2410 | } |
2411 | ||
b5b7879a DDM |
2412 | if (!has_roothash) { |
2413 | r = table_hide_column_from_display(t, roothash_col); | |
2414 | if (r < 0) | |
2415 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2416 | } | |
2417 | ||
3ab44dbd | 2418 | if (!has_dropin_files) { |
39fc0174 RP |
2419 | r = table_hide_column_from_display(t, dropin_files_col); |
2420 | if (r < 0) | |
2421 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2422 | } | |
2423 | ||
896e678b | 2424 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2425 | } |
2426 | ||
2427 | static void context_bar_char_process_partition( | |
2428 | Context *context, | |
2429 | Partition *bar[], | |
2430 | size_t n, | |
2431 | Partition *p, | |
2432 | size_t *ret_start) { | |
2433 | ||
2434 | uint64_t from, to, total; | |
2435 | size_t x, y; | |
2436 | ||
2437 | assert(context); | |
2438 | assert(bar); | |
2439 | assert(n > 0); | |
2440 | assert(p); | |
2441 | ||
2442 | if (p->dropped) | |
2443 | return; | |
2444 | ||
2445 | assert(p->offset != UINT64_MAX); | |
2446 | assert(p->new_size != UINT64_MAX); | |
2447 | ||
2448 | from = p->offset; | |
2449 | to = from + p->new_size; | |
2450 | ||
d8daed09 TY |
2451 | assert(context->total > 0); |
2452 | total = context->total; | |
e594a3b1 | 2453 | |
d8daed09 TY |
2454 | assert(from <= total); |
2455 | x = from * n / total; | |
e594a3b1 | 2456 | |
d8daed09 TY |
2457 | assert(to <= total); |
2458 | y = to * n / total; | |
e594a3b1 LP |
2459 | |
2460 | assert(x <= y); | |
2461 | assert(y <= n); | |
2462 | ||
2463 | for (size_t i = x; i < y; i++) | |
2464 | bar[i] = p; | |
2465 | ||
2466 | *ret_start = x; | |
2467 | } | |
2468 | ||
2469 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2470 | _cleanup_free_ char *buf = NULL; | |
e594a3b1 LP |
2471 | const char *label; |
2472 | sd_id128_t id; | |
2473 | ||
2474 | /* Tries really hard to find a suitable description for this partition */ | |
2475 | ||
2476 | if (p->definition_path) { | |
2477 | buf = strdup(basename(p->definition_path)); | |
2478 | goto done; | |
2479 | } | |
2480 | ||
2481 | label = partition_label(p); | |
2482 | if (!isempty(label)) { | |
2483 | buf = strdup(label); | |
2484 | goto done; | |
2485 | } | |
2486 | ||
2487 | if (p->partno != UINT64_MAX) { | |
2488 | buf = fdisk_partname(node, p->partno+1); | |
2489 | goto done; | |
2490 | } | |
2491 | ||
11749b61 | 2492 | if (p->new_uuid_is_set) |
e594a3b1 LP |
2493 | id = p->new_uuid; |
2494 | else if (!sd_id128_is_null(p->current_uuid)) | |
2495 | id = p->current_uuid; | |
2496 | else | |
2497 | id = p->type_uuid; | |
2498 | ||
b7416360 | 2499 | buf = strdup(SD_ID128_TO_UUID_STRING(id)); |
e594a3b1 LP |
2500 | |
2501 | done: | |
2502 | if (!buf) | |
2503 | return -ENOMEM; | |
2504 | ||
2505 | *ret = TAKE_PTR(buf); | |
2506 | return 0; | |
2507 | } | |
2508 | ||
2509 | static int context_dump_partition_bar(Context *context, const char *node) { | |
2510 | _cleanup_free_ Partition **bar = NULL; | |
2511 | _cleanup_free_ size_t *start_array = NULL; | |
03677889 | 2512 | Partition *last = NULL; |
e594a3b1 LP |
2513 | bool z = false; |
2514 | size_t c, j = 0; | |
2515 | ||
f391597c | 2516 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2517 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2518 | ||
2519 | bar = new0(Partition*, c); | |
2520 | if (!bar) | |
2521 | return log_oom(); | |
2522 | ||
2523 | start_array = new(size_t, context->n_partitions); | |
2524 | if (!start_array) | |
2525 | return log_oom(); | |
2526 | ||
2527 | LIST_FOREACH(partitions, p, context->partitions) | |
2528 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2529 | ||
2530 | putc(' ', stdout); | |
2531 | ||
2532 | for (size_t i = 0; i < c; i++) { | |
2533 | if (bar[i]) { | |
2534 | if (last != bar[i]) | |
2535 | z = !z; | |
2536 | ||
2537 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2538 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2539 | } else { | |
2540 | fputs(ansi_normal(), stdout); | |
2541 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2542 | } | |
2543 | ||
2544 | last = bar[i]; | |
2545 | } | |
2546 | ||
2547 | fputs(ansi_normal(), stdout); | |
2548 | putc('\n', stdout); | |
2549 | ||
2550 | for (size_t i = 0; i < context->n_partitions; i++) { | |
2551 | _cleanup_free_ char **line = NULL; | |
2552 | ||
2553 | line = new0(char*, c); | |
2554 | if (!line) | |
2555 | return log_oom(); | |
2556 | ||
2557 | j = 0; | |
2558 | LIST_FOREACH(partitions, p, context->partitions) { | |
2559 | _cleanup_free_ char *d = NULL; | |
2560 | j++; | |
2561 | ||
2562 | if (i < context->n_partitions - j) { | |
2563 | ||
2564 | if (line[start_array[j-1]]) { | |
2565 | const char *e; | |
2566 | ||
2567 | /* Upgrade final corner to the right with a branch to the right */ | |
2568 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
2569 | if (e) { | |
2570 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
2571 | if (!d) | |
2572 | return log_oom(); | |
2573 | } | |
2574 | } | |
2575 | ||
2576 | if (!d) { | |
2577 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
2578 | if (!d) | |
2579 | return log_oom(); | |
2580 | } | |
2581 | ||
2582 | } else if (i == context->n_partitions - j) { | |
2583 | _cleanup_free_ char *hint = NULL; | |
2584 | ||
2585 | (void) partition_hint(p, node, &hint); | |
2586 | ||
2587 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
2588 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
2589 | else | |
2590 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
2591 | ||
2592 | if (!d) | |
2593 | return log_oom(); | |
2594 | } | |
2595 | ||
2596 | if (d) | |
2597 | free_and_replace(line[start_array[j-1]], d); | |
2598 | } | |
2599 | ||
2600 | putc(' ', stdout); | |
2601 | ||
2602 | j = 0; | |
2603 | while (j < c) { | |
2604 | if (line[j]) { | |
2605 | fputs(line[j], stdout); | |
2606 | j += utf8_console_width(line[j]); | |
2607 | } else { | |
2608 | putc(' ', stdout); | |
2609 | j++; | |
2610 | } | |
2611 | } | |
2612 | ||
2613 | putc('\n', stdout); | |
2614 | ||
2615 | for (j = 0; j < c; j++) | |
2616 | free(line[j]); | |
2617 | } | |
2618 | ||
2619 | return 0; | |
2620 | } | |
2621 | ||
b5b7879a DDM |
2622 | static bool context_has_roothash(Context *context) { |
2623 | LIST_FOREACH(partitions, p, context->partitions) | |
2624 | if (p->roothash) | |
2625 | return true; | |
2626 | ||
2627 | return false; | |
2628 | } | |
2629 | ||
2630 | static int context_dump(Context *context, const char *node, bool late) { | |
a26d463d DDM |
2631 | int r; |
2632 | ||
2633 | assert(context); | |
2634 | assert(node); | |
2635 | ||
2636 | if (arg_pretty == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2637 | return 0; | |
2638 | ||
b5b7879a DDM |
2639 | /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes |
2640 | * in the output. */ | |
2641 | if (!late && !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2642 | return 0; | |
2643 | ||
2644 | /* If we're not outputting JSON, only dump again after doing all operations if there are any | |
2645 | * roothashes that we need to communicate to the user. */ | |
2646 | if (late && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !context_has_roothash(context)) | |
2647 | return 0; | |
2648 | ||
a26d463d DDM |
2649 | r = context_dump_partitions(context, node); |
2650 | if (r < 0) | |
2651 | return r; | |
2652 | ||
b5b7879a DDM |
2653 | /* Make sure we only write the partition bar once, even if we're writing the partition table twice to |
2654 | * communicate roothashes. */ | |
2655 | if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !late) { | |
a26d463d DDM |
2656 | putc('\n', stdout); |
2657 | ||
2658 | r = context_dump_partition_bar(context, node); | |
2659 | if (r < 0) | |
2660 | return r; | |
2661 | ||
2662 | putc('\n', stdout); | |
2663 | } | |
2664 | ||
2665 | fflush(stdout); | |
2666 | ||
2667 | return 0; | |
2668 | } | |
2669 | ||
2670 | ||
e594a3b1 | 2671 | static bool context_changed(const Context *context) { |
03677889 | 2672 | assert(context); |
e594a3b1 LP |
2673 | |
2674 | LIST_FOREACH(partitions, p, context->partitions) { | |
2675 | if (p->dropped) | |
2676 | continue; | |
2677 | ||
2678 | if (p->allocated_to_area) | |
2679 | return true; | |
2680 | ||
2681 | if (p->new_size != p->current_size) | |
2682 | return true; | |
2683 | } | |
2684 | ||
2685 | return false; | |
2686 | } | |
2687 | ||
81873a6b | 2688 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
2689 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
2690 | int r; | |
2691 | ||
2692 | assert(context); | |
81873a6b LP |
2693 | assert(offset != UINT64_MAX); |
2694 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
2695 | |
2696 | probe = blkid_new_probe(); | |
2697 | if (!probe) | |
2698 | return log_oom(); | |
2699 | ||
e594a3b1 | 2700 | errno = 0; |
81873a6b | 2701 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 2702 | if (r < 0) |
81873a6b | 2703 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
2704 | |
2705 | errno = 0; | |
2706 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
2707 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
2708 | blkid_probe_enable_partitions(probe, true) < 0 || | |
2709 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 2710 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
2711 | |
2712 | for (;;) { | |
2713 | errno = 0; | |
2714 | r = blkid_do_probe(probe); | |
2715 | if (r < 0) | |
2716 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
2717 | if (r > 0) | |
2718 | break; | |
2719 | ||
2720 | errno = 0; | |
2721 | if (blkid_do_wipe(probe, false) < 0) | |
2722 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
2723 | } | |
2724 | ||
e594a3b1 LP |
2725 | return 0; |
2726 | } | |
2727 | ||
81873a6b LP |
2728 | static int context_wipe_partition(Context *context, Partition *p) { |
2729 | int r; | |
2730 | ||
2731 | assert(context); | |
2732 | assert(p); | |
2733 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
2734 | ||
2735 | assert(p->offset != UINT64_MAX); | |
2736 | assert(p->new_size != UINT64_MAX); | |
2737 | ||
2738 | r = context_wipe_range(context, p->offset, p->new_size); | |
2739 | if (r < 0) | |
2740 | return r; | |
2741 | ||
2742 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
2743 | return 0; | |
2744 | } | |
2745 | ||
2746 | static int context_discard_range( | |
2747 | Context *context, | |
2748 | uint64_t offset, | |
2749 | uint64_t size) { | |
2750 | ||
e594a3b1 LP |
2751 | struct stat st; |
2752 | int fd; | |
2753 | ||
2754 | assert(context); | |
2755 | assert(offset != UINT64_MAX); | |
2756 | assert(size != UINT64_MAX); | |
2757 | ||
2758 | if (size <= 0) | |
2759 | return 0; | |
2760 | ||
a26f4a49 | 2761 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
2762 | |
2763 | if (fstat(fd, &st) < 0) | |
2764 | return -errno; | |
2765 | ||
2766 | if (S_ISREG(st.st_mode)) { | |
2767 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
2768 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2769 | return -EOPNOTSUPP; | |
2770 | ||
2771 | return -errno; | |
2772 | } | |
2773 | ||
2774 | return 1; | |
2775 | } | |
2776 | ||
2777 | if (S_ISBLK(st.st_mode)) { | |
2778 | uint64_t range[2], end; | |
2779 | ||
994b3031 | 2780 | range[0] = round_up_size(offset, context->sector_size); |
e594a3b1 | 2781 | |
55d38014 LP |
2782 | if (offset > UINT64_MAX - size) |
2783 | return -ERANGE; | |
2784 | ||
e594a3b1 LP |
2785 | end = offset + size; |
2786 | if (end <= range[0]) | |
2787 | return 0; | |
2788 | ||
994b3031 | 2789 | range[1] = round_down_size(end - range[0], context->sector_size); |
e594a3b1 LP |
2790 | if (range[1] <= 0) |
2791 | return 0; | |
2792 | ||
2793 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
2794 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2795 | return -EOPNOTSUPP; | |
2796 | ||
2797 | return -errno; | |
2798 | } | |
2799 | ||
2800 | return 1; | |
2801 | } | |
2802 | ||
2803 | return -EOPNOTSUPP; | |
2804 | } | |
2805 | ||
2806 | static int context_discard_partition(Context *context, Partition *p) { | |
2807 | int r; | |
2808 | ||
2809 | assert(context); | |
2810 | assert(p); | |
2811 | ||
2812 | assert(p->offset != UINT64_MAX); | |
2813 | assert(p->new_size != UINT64_MAX); | |
2814 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
2815 | ||
2816 | if (!arg_discard) | |
2817 | return 0; | |
2818 | ||
2819 | r = context_discard_range(context, p->offset, p->new_size); | |
2820 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 2821 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2822 | return 0; |
2823 | } | |
22163eb5 LP |
2824 | if (r == -EBUSY) { |
2825 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
2826 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
2827 | return 0; | |
2828 | } | |
e594a3b1 LP |
2829 | if (r == 0) { |
2830 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
2831 | return 0; | |
2832 | } | |
2833 | if (r < 0) | |
5b5109e2 | 2834 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2835 | |
5b5109e2 | 2836 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2837 | return 1; |
2838 | } | |
2839 | ||
2840 | static int context_discard_gap_after(Context *context, Partition *p) { | |
2841 | uint64_t gap, next = UINT64_MAX; | |
e594a3b1 LP |
2842 | int r; |
2843 | ||
2844 | assert(context); | |
2845 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
2846 | ||
5113436b AF |
2847 | if (!arg_discard) |
2848 | return 0; | |
2849 | ||
e594a3b1 LP |
2850 | if (p) |
2851 | gap = p->offset + p->new_size; | |
2852 | else | |
2853 | gap = context->start; | |
2854 | ||
2855 | LIST_FOREACH(partitions, q, context->partitions) { | |
2856 | if (q->dropped) | |
2857 | continue; | |
2858 | ||
2859 | assert(q->offset != UINT64_MAX); | |
2860 | assert(q->new_size != UINT64_MAX); | |
2861 | ||
2862 | if (q->offset < gap) | |
2863 | continue; | |
2864 | ||
2865 | if (next == UINT64_MAX || q->offset < next) | |
2866 | next = q->offset; | |
2867 | } | |
2868 | ||
2869 | if (next == UINT64_MAX) { | |
2870 | next = context->end; | |
2871 | if (gap > next) | |
2872 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
2873 | } | |
2874 | ||
2875 | assert(next >= gap); | |
2876 | r = context_discard_range(context, gap, next - gap); | |
2877 | if (r == -EOPNOTSUPP) { | |
2878 | if (p) | |
5b5109e2 | 2879 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2880 | else |
5b5109e2 | 2881 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
2882 | return 0; |
2883 | } | |
2884 | if (r == 0) /* Too short */ | |
2885 | return 0; | |
2886 | if (r < 0) { | |
2887 | if (p) | |
2888 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
2889 | else | |
2890 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
2891 | } | |
2892 | ||
2893 | if (p) | |
2894 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
2895 | else | |
2896 | log_info("Successfully discarded gap at beginning of disk."); | |
2897 | ||
2898 | return 0; | |
2899 | } | |
2900 | ||
2901 | static int context_wipe_and_discard(Context *context, bool from_scratch) { | |
e594a3b1 LP |
2902 | int r; |
2903 | ||
2904 | assert(context); | |
2905 | ||
2906 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if | |
2907 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
2908 | * device in one go early on. */ | |
2909 | ||
2910 | LIST_FOREACH(partitions, p, context->partitions) { | |
2911 | ||
2912 | if (!p->allocated_to_area) | |
2913 | continue; | |
2914 | ||
e594a3b1 LP |
2915 | r = context_wipe_partition(context, p); |
2916 | if (r < 0) | |
2917 | return r; | |
2918 | ||
2919 | if (!from_scratch) { | |
f0cb1b95 LP |
2920 | r = context_discard_partition(context, p); |
2921 | if (r < 0) | |
2922 | return r; | |
2923 | ||
e594a3b1 LP |
2924 | r = context_discard_gap_after(context, p); |
2925 | if (r < 0) | |
2926 | return r; | |
2927 | } | |
2928 | } | |
2929 | ||
2930 | if (!from_scratch) { | |
2931 | r = context_discard_gap_after(context, NULL); | |
2932 | if (r < 0) | |
2933 | return r; | |
2934 | } | |
2935 | ||
2936 | return 0; | |
2937 | } | |
2938 | ||
b9df3536 | 2939 | static int partition_encrypt( |
994b3031 | 2940 | Context *context, |
b9df3536 LP |
2941 | Partition *p, |
2942 | const char *node, | |
2943 | struct crypt_device **ret_cd, | |
2944 | char **ret_volume, | |
2945 | int *ret_fd) { | |
3dd8ae5c | 2946 | #if HAVE_LIBCRYPTSETUP |
0d12936d | 2947 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
b9df3536 LP |
2948 | _cleanup_(erase_and_freep) void *volume_key = NULL; |
2949 | _cleanup_free_ char *dm_name = NULL, *vol = NULL; | |
b9df3536 LP |
2950 | size_t volume_key_size = 256 / 8; |
2951 | sd_id128_t uuid; | |
2952 | int r; | |
2953 | ||
994b3031 | 2954 | assert(context); |
b9df3536 | 2955 | assert(p); |
889914ef LP |
2956 | assert(p->encrypt != ENCRYPT_OFF); |
2957 | ||
2958 | log_debug("Encryption mode for partition %" PRIu64 ": %s", p->partno, encrypt_mode_to_string(p->encrypt)); | |
b9df3536 | 2959 | |
0d12936d LP |
2960 | r = dlopen_cryptsetup(); |
2961 | if (r < 0) | |
2962 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
2963 | ||
b9df3536 LP |
2964 | if (asprintf(&dm_name, "luks-repart-%08" PRIx64, random_u64()) < 0) |
2965 | return log_oom(); | |
2966 | ||
2967 | if (ret_volume) { | |
2968 | vol = path_join("/dev/mapper/", dm_name); | |
2969 | if (!vol) | |
2970 | return log_oom(); | |
2971 | } | |
2972 | ||
2973 | r = derive_uuid(p->new_uuid, "luks-uuid", &uuid); | |
2974 | if (r < 0) | |
2975 | return r; | |
2976 | ||
2977 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); | |
2978 | ||
2979 | volume_key = malloc(volume_key_size); | |
2980 | if (!volume_key) | |
2981 | return log_oom(); | |
2982 | ||
87cb1ab6 | 2983 | r = crypto_random_bytes(volume_key, volume_key_size); |
b9df3536 LP |
2984 | if (r < 0) |
2985 | return log_error_errno(r, "Failed to generate volume key: %m"); | |
2986 | ||
0d12936d | 2987 | r = sym_crypt_init(&cd, node); |
b9df3536 LP |
2988 | if (r < 0) |
2989 | return log_error_errno(r, "Failed to allocate libcryptsetup context: %m"); | |
2990 | ||
2991 | cryptsetup_enable_logging(cd); | |
2992 | ||
0d12936d | 2993 | r = sym_crypt_format(cd, |
b9df3536 LP |
2994 | CRYPT_LUKS2, |
2995 | "aes", | |
2996 | "xts-plain64", | |
b7416360 | 2997 | SD_ID128_TO_UUID_STRING(uuid), |
b9df3536 LP |
2998 | volume_key, |
2999 | volume_key_size, | |
3000 | &(struct crypt_params_luks2) { | |
be9ce018 | 3001 | .label = strempty(p->new_label), |
994b3031 | 3002 | .sector_size = context->sector_size, |
b9df3536 LP |
3003 | }); |
3004 | if (r < 0) | |
3005 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
3006 | ||
889914ef LP |
3007 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
3008 | r = sym_crypt_keyslot_add_by_volume_key( | |
3009 | cd, | |
3010 | CRYPT_ANY_SLOT, | |
3011 | volume_key, | |
3012 | volume_key_size, | |
3013 | strempty(arg_key), | |
3014 | arg_key_size); | |
3015 | if (r < 0) | |
3016 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
3017 | } | |
3018 | ||
3019 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
3020 | #if HAVE_TPM2 | |
3021 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; | |
3022 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
3023 | _cleanup_(erase_and_freep) void *secret = NULL; | |
02ef97cd | 3024 | _cleanup_free_ void *pubkey = NULL; |
889914ef | 3025 | _cleanup_free_ void *blob = NULL, *hash = NULL; |
02ef97cd | 3026 | size_t secret_size, blob_size, hash_size, pubkey_size = 0; |
2b92a672 | 3027 | uint16_t pcr_bank, primary_alg; |
889914ef LP |
3028 | int keyslot; |
3029 | ||
02ef97cd LP |
3030 | if (arg_tpm2_public_key_pcr_mask != 0) { |
3031 | r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey, &pubkey_size); | |
3032 | if (r < 0) { | |
3033 | if (arg_tpm2_public_key || r != -ENOENT) | |
3034 | return log_error_errno(r, "Failed read TPM PCR public key: %m"); | |
3035 | ||
3036 | log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m"); | |
3037 | arg_tpm2_public_key_pcr_mask = 0; | |
3038 | } | |
3039 | } | |
3040 | ||
d9b5841d LP |
3041 | r = tpm2_seal(arg_tpm2_device, |
3042 | arg_tpm2_pcr_mask, | |
02ef97cd LP |
3043 | pubkey, pubkey_size, |
3044 | arg_tpm2_public_key_pcr_mask, | |
d9b5841d LP |
3045 | /* pin= */ NULL, |
3046 | &secret, &secret_size, | |
3047 | &blob, &blob_size, | |
3048 | &hash, &hash_size, | |
3049 | &pcr_bank, | |
3050 | &primary_alg); | |
889914ef LP |
3051 | if (r < 0) |
3052 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
3053 | ||
3054 | r = base64mem(secret, secret_size, &base64_encoded); | |
3055 | if (r < 0) | |
3056 | return log_error_errno(r, "Failed to base64 encode secret key: %m"); | |
3057 | ||
3058 | r = cryptsetup_set_minimal_pbkdf(cd); | |
3059 | if (r < 0) | |
3060 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
3061 | ||
3062 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
3063 | cd, | |
3064 | CRYPT_ANY_SLOT, | |
3065 | volume_key, | |
3066 | volume_key_size, | |
3067 | base64_encoded, | |
3068 | strlen(base64_encoded)); | |
3069 | if (keyslot < 0) | |
3070 | return log_error_errno(keyslot, "Failed to add new TPM2 key to %s: %m", node); | |
3071 | ||
f0f4fcae LP |
3072 | r = tpm2_make_luks2_json( |
3073 | keyslot, | |
3074 | arg_tpm2_pcr_mask, | |
3075 | pcr_bank, | |
02ef97cd LP |
3076 | pubkey, pubkey_size, |
3077 | arg_tpm2_public_key_pcr_mask, | |
f0f4fcae LP |
3078 | primary_alg, |
3079 | blob, blob_size, | |
3080 | hash, hash_size, | |
3081 | 0, | |
3082 | &v); | |
889914ef LP |
3083 | if (r < 0) |
3084 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
3085 | ||
3086 | r = cryptsetup_add_token_json(cd, v); | |
3087 | if (r < 0) | |
3088 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
3089 | #else | |
3090 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3091 | "Support for TPM2 enrollment not enabled."); | |
3092 | #endif | |
3093 | } | |
b9df3536 | 3094 | |
0d12936d | 3095 | r = sym_crypt_activate_by_volume_key( |
b9df3536 LP |
3096 | cd, |
3097 | dm_name, | |
3098 | volume_key, | |
3099 | volume_key_size, | |
3100 | arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0); | |
3101 | if (r < 0) | |
3102 | return log_error_errno(r, "Failed to activate LUKS superblock: %m"); | |
3103 | ||
3104 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
3105 | ||
3106 | if (ret_fd) { | |
3107 | _cleanup_close_ int dev_fd = -1; | |
3108 | ||
3109 | dev_fd = open(vol, O_RDWR|O_CLOEXEC|O_NOCTTY); | |
3110 | if (dev_fd < 0) | |
3111 | return log_error_errno(errno, "Failed to open LUKS volume '%s': %m", vol); | |
3112 | ||
3113 | *ret_fd = TAKE_FD(dev_fd); | |
3114 | } | |
3115 | ||
3116 | if (ret_cd) | |
3117 | *ret_cd = TAKE_PTR(cd); | |
3118 | if (ret_volume) | |
3119 | *ret_volume = TAKE_PTR(vol); | |
3120 | ||
3121 | return 0; | |
3dd8ae5c | 3122 | #else |
3123 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot encrypt: %m"); | |
3124 | #endif | |
b9df3536 LP |
3125 | } |
3126 | ||
3127 | static int deactivate_luks(struct crypt_device *cd, const char *node) { | |
3dd8ae5c | 3128 | #if HAVE_LIBCRYPTSETUP |
b9df3536 LP |
3129 | int r; |
3130 | ||
3131 | if (!cd) | |
3132 | return 0; | |
3133 | ||
3134 | assert(node); | |
3135 | ||
3136 | /* udev or so might access out block device in the background while we are done. Let's hence force | |
3137 | * detach the volume. We sync'ed before, hence this should be safe. */ | |
3138 | ||
0d12936d | 3139 | r = sym_crypt_deactivate_by_name(cd, basename(node), CRYPT_DEACTIVATE_FORCE); |
b9df3536 LP |
3140 | if (r < 0) |
3141 | return log_error_errno(r, "Failed to deactivate LUKS device: %m"); | |
3142 | ||
3143 | return 1; | |
3dd8ae5c | 3144 | #else |
3145 | return 0; | |
3146 | #endif | |
b9df3536 LP |
3147 | } |
3148 | ||
757bc2e4 | 3149 | static int context_copy_blocks(Context *context) { |
b9df3536 | 3150 | int whole_fd = -1, r; |
757bc2e4 LP |
3151 | |
3152 | assert(context); | |
3153 | ||
3154 | /* Copy in file systems on the block level */ | |
3155 | ||
3156 | LIST_FOREACH(partitions, p, context->partitions) { | |
0d12936d | 3157 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
b9df3536 LP |
3158 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
3159 | _cleanup_free_ char *encrypted = NULL; | |
3160 | _cleanup_close_ int encrypted_dev_fd = -1; | |
b9df3536 | 3161 | int target_fd; |
757bc2e4 LP |
3162 | |
3163 | if (p->copy_blocks_fd < 0) | |
3164 | continue; | |
3165 | ||
3166 | if (p->dropped) | |
3167 | continue; | |
3168 | ||
3169 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
3170 | continue; | |
3171 | ||
3172 | assert(p->new_size != UINT64_MAX); | |
3173 | assert(p->copy_blocks_size != UINT64_MAX); | |
3174 | assert(p->new_size >= p->copy_blocks_size); | |
3175 | ||
b9df3536 LP |
3176 | if (whole_fd < 0) |
3177 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3178 | ||
889914ef | 3179 | if (p->encrypt != ENCRYPT_OFF) { |
fd83c98e | 3180 | r = loop_device_make(whole_fd, O_RDWR, p->offset, p->new_size, 0, 0, LOCK_EX, &d); |
b9df3536 LP |
3181 | if (r < 0) |
3182 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); | |
3183 | ||
994b3031 | 3184 | r = partition_encrypt(context, p, d->node, &cd, &encrypted, &encrypted_dev_fd); |
b9df3536 LP |
3185 | if (r < 0) |
3186 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
757bc2e4 | 3187 | |
b9df3536 LP |
3188 | if (flock(encrypted_dev_fd, LOCK_EX) < 0) |
3189 | return log_error_errno(errno, "Failed to lock LUKS device: %m"); | |
3190 | ||
3191 | target_fd = encrypted_dev_fd; | |
695cfd53 | 3192 | } else { |
b9df3536 LP |
3193 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) |
3194 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3195 | ||
3196 | target_fd = whole_fd; | |
3197 | } | |
757bc2e4 | 3198 | |
2b59bf51 ZJS |
3199 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", |
3200 | p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno); | |
757bc2e4 | 3201 | |
b9df3536 | 3202 | r = copy_bytes_full(p->copy_blocks_fd, target_fd, p->copy_blocks_size, 0, NULL, NULL, NULL, NULL); |
757bc2e4 LP |
3203 | if (r < 0) |
3204 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
3205 | ||
b9df3536 | 3206 | if (fsync(target_fd) < 0) |
8ac04a65 | 3207 | return log_error_errno(errno, "Failed to synchronize copied data blocks: %m"); |
b9df3536 | 3208 | |
889914ef | 3209 | if (p->encrypt != ENCRYPT_OFF) { |
b9df3536 LP |
3210 | encrypted_dev_fd = safe_close(encrypted_dev_fd); |
3211 | ||
3212 | r = deactivate_luks(cd, encrypted); | |
3213 | if (r < 0) | |
3214 | return r; | |
3215 | ||
0d12936d | 3216 | sym_crypt_free(cd); |
b9df3536 LP |
3217 | cd = NULL; |
3218 | ||
3219 | r = loop_device_sync(d); | |
3220 | if (r < 0) | |
3221 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3222 | } | |
3223 | ||
757bc2e4 LP |
3224 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
3225 | } | |
3226 | ||
3227 | return 0; | |
3228 | } | |
3229 | ||
92cd7e7c | 3230 | static int do_copy_files(Partition *p, const char *root) { |
8a794850 LP |
3231 | int r; |
3232 | ||
3233 | assert(p); | |
92cd7e7c | 3234 | assert(root); |
8a794850 LP |
3235 | |
3236 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
3237 | _cleanup_close_ int sfd = -1, pfd = -1, tfd = -1; | |
8a794850 | 3238 | |
fd1ca01a | 3239 | sfd = chase_symlinks_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL); |
8a794850 LP |
3240 | if (sfd < 0) |
3241 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
3242 | ||
3243 | r = fd_verify_regular(sfd); | |
3244 | if (r < 0) { | |
3245 | if (r != -EISDIR) | |
3246 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
3247 | ||
3248 | /* We are looking at a directory */ | |
fd1ca01a | 3249 | tfd = chase_symlinks_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3250 | if (tfd < 0) { |
f21a3a82 LP |
3251 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3252 | ||
8a794850 LP |
3253 | if (tfd != -ENOENT) |
3254 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
3255 | ||
f21a3a82 LP |
3256 | r = path_extract_filename(*target, &fn); |
3257 | if (r < 0) | |
3258 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3259 | ||
3260 | r = path_extract_directory(*target, &dn); | |
3261 | if (r < 0) | |
3262 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3263 | ||
92cd7e7c | 3264 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3265 | if (r < 0) |
3266 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
3267 | ||
fd1ca01a | 3268 | pfd = chase_symlinks_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 LP |
3269 | if (pfd < 0) |
3270 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
3271 | ||
652d9040 LP |
3272 | r = copy_tree_at( |
3273 | sfd, ".", | |
6020d00d | 3274 | pfd, fn, |
652d9040 | 3275 | UID_INVALID, GID_INVALID, |
a424958a DDM |
3276 | COPY_REFLINK|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS, |
3277 | NULL); | |
8a794850 | 3278 | } else |
652d9040 LP |
3279 | r = copy_tree_at( |
3280 | sfd, ".", | |
3281 | tfd, ".", | |
3282 | UID_INVALID, GID_INVALID, | |
a424958a DDM |
3283 | COPY_REFLINK|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS, |
3284 | NULL); | |
8a794850 | 3285 | if (r < 0) |
554a2b64 | 3286 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 3287 | } else { |
f21a3a82 LP |
3288 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3289 | ||
8a794850 LP |
3290 | /* We are looking at a regular file */ |
3291 | ||
f21a3a82 LP |
3292 | r = path_extract_filename(*target, &fn); |
3293 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
3294 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
3295 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
3296 | if (r < 0) | |
3297 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3298 | ||
3299 | r = path_extract_directory(*target, &dn); | |
3300 | if (r < 0) | |
3301 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3302 | ||
92cd7e7c | 3303 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3304 | if (r < 0) |
3305 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
3306 | ||
fd1ca01a | 3307 | pfd = chase_symlinks_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3308 | if (pfd < 0) |
a0ff9971 | 3309 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 3310 | |
e2819067 | 3311 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
3312 | if (tfd < 0) |
3313 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
3314 | ||
3315 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_SIGINT); | |
3316 | if (r < 0) | |
554a2b64 | 3317 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 3318 | |
23e026de | 3319 | (void) copy_xattr(sfd, tfd, COPY_ALL_XATTRS); |
8a794850 LP |
3320 | (void) copy_access(sfd, tfd); |
3321 | (void) copy_times(sfd, tfd, 0); | |
3322 | } | |
3323 | } | |
3324 | ||
3325 | return 0; | |
3326 | } | |
3327 | ||
92cd7e7c | 3328 | static int do_make_directories(Partition *p, const char *root) { |
d83d8048 LP |
3329 | int r; |
3330 | ||
3331 | assert(p); | |
92cd7e7c | 3332 | assert(root); |
d83d8048 LP |
3333 | |
3334 | STRV_FOREACH(d, p->make_directories) { | |
3335 | ||
92cd7e7c | 3336 | r = mkdir_p_root(root, *d, UID_INVALID, GID_INVALID, 0755); |
d83d8048 LP |
3337 | if (r < 0) |
3338 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
3339 | } | |
3340 | ||
3341 | return 0; | |
3342 | } | |
3343 | ||
95bfd3cd DDM |
3344 | static int partition_populate_directory(Partition *p, char **ret_root, char **ret_tmp_root) { |
3345 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; | |
3346 | int r; | |
3347 | ||
3348 | assert(ret_root); | |
3349 | assert(ret_tmp_root); | |
3350 | ||
eb43379c DDM |
3351 | /* When generating read-only filesystems, we need the source tree to be available when we generate |
3352 | * the read-only filesystem. Because we might have multiple source trees, we build a temporary source | |
3353 | * tree beforehand where we merge all our inputs. We then use this merged source tree to create the | |
3354 | * read-only filesystem. */ | |
95bfd3cd | 3355 | |
eb43379c | 3356 | if (!fstype_is_ro(p->format)) { |
95bfd3cd DDM |
3357 | *ret_root = NULL; |
3358 | *ret_tmp_root = NULL; | |
3359 | return 0; | |
3360 | } | |
3361 | ||
3362 | /* If we only have a single directory that's meant to become the root directory of the filesystem, | |
3363 | * we can shortcut this function and just use that directory as the root directory instead. If we | |
3364 | * allocate a temporary directory, it's stored in "ret_tmp_root" to indicate it should be removed. | |
3365 | * Otherwise, we return the directory to use in "root" to indicate it should not be removed. */ | |
3366 | ||
3367 | if (strv_length(p->copy_files) == 2 && strv_length(p->make_directories) == 0 && streq(p->copy_files[1], "/")) { | |
3368 | _cleanup_free_ char *s = NULL; | |
3369 | ||
fd1ca01a | 3370 | r = chase_symlinks(p->copy_files[0], arg_root, CHASE_PREFIX_ROOT, &s, NULL); |
898db9f3 DDM |
3371 | if (r < 0) |
3372 | return log_error_errno(r, "Failed to resolve source '%s%s': %m", strempty(arg_root), p->copy_files[0]); | |
95bfd3cd DDM |
3373 | |
3374 | *ret_root = TAKE_PTR(s); | |
3375 | *ret_tmp_root = NULL; | |
3376 | return 0; | |
3377 | } | |
3378 | ||
3379 | r = mkdtemp_malloc("/var/tmp/repart-XXXXXX", &root); | |
3380 | if (r < 0) | |
3381 | return log_error_errno(r, "Failed to create temporary directory: %m"); | |
3382 | ||
3383 | r = do_copy_files(p, root); | |
3384 | if (r < 0) | |
3385 | return r; | |
3386 | ||
3387 | r = do_make_directories(p, root); | |
3388 | if (r < 0) | |
3389 | return r; | |
3390 | ||
3391 | *ret_root = NULL; | |
3392 | *ret_tmp_root = TAKE_PTR(root); | |
3393 | return 0; | |
3394 | } | |
3395 | ||
3396 | static int partition_populate_filesystem(Partition *p, const char *node) { | |
8a794850 LP |
3397 | int r; |
3398 | ||
3399 | assert(p); | |
3400 | assert(node); | |
3401 | ||
eb43379c | 3402 | if (fstype_is_ro(p->format)) |
95bfd3cd DDM |
3403 | return 0; |
3404 | ||
d83d8048 | 3405 | if (strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
8a794850 LP |
3406 | return 0; |
3407 | ||
3408 | log_info("Populating partition %" PRIu64 " with files.", p->partno); | |
3409 | ||
3410 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
3411 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
3412 | * detached mount propagation. */ | |
3413 | ||
3414 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
3415 | if (r < 0) | |
3416 | return r; | |
3417 | if (r == 0) { | |
3418 | static const char fs[] = "/run/systemd/mount-root"; | |
3419 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
3420 | ||
3421 | r = mkdir_p(fs, 0700); | |
3422 | if (r < 0) { | |
3423 | log_error_errno(r, "Failed to create mount point: %m"); | |
3424 | _exit(EXIT_FAILURE); | |
3425 | } | |
3426 | ||
511a8cfe | 3427 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
3428 | _exit(EXIT_FAILURE); |
3429 | ||
3430 | if (do_copy_files(p, fs) < 0) | |
3431 | _exit(EXIT_FAILURE); | |
3432 | ||
d83d8048 LP |
3433 | if (do_make_directories(p, fs) < 0) |
3434 | _exit(EXIT_FAILURE); | |
3435 | ||
8a794850 LP |
3436 | r = syncfs_path(AT_FDCWD, fs); |
3437 | if (r < 0) { | |
3438 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
3439 | _exit(EXIT_FAILURE); | |
3440 | } | |
3441 | ||
3442 | _exit(EXIT_SUCCESS); | |
3443 | } | |
3444 | ||
3445 | log_info("Successfully populated partition %" PRIu64 " with files.", p->partno); | |
3446 | return 0; | |
3447 | } | |
3448 | ||
53171c04 | 3449 | static int context_mkfs(Context *context) { |
53171c04 LP |
3450 | int fd = -1, r; |
3451 | ||
3452 | assert(context); | |
3453 | ||
3454 | /* Make a file system */ | |
3455 | ||
3456 | LIST_FOREACH(partitions, p, context->partitions) { | |
0d12936d | 3457 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
53171c04 | 3458 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
95bfd3cd DDM |
3459 | _cleanup_(rm_rf_physical_and_freep) char *tmp_root = NULL; |
3460 | _cleanup_free_ char *encrypted = NULL, *root = NULL; | |
b9df3536 LP |
3461 | _cleanup_close_ int encrypted_dev_fd = -1; |
3462 | const char *fsdev; | |
53171c04 LP |
3463 | sd_id128_t fs_uuid; |
3464 | ||
3465 | if (p->dropped) | |
3466 | continue; | |
3467 | ||
3468 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3469 | continue; | |
3470 | ||
3471 | if (!p->format) | |
3472 | continue; | |
3473 | ||
3474 | assert(p->offset != UINT64_MAX); | |
3475 | assert(p->new_size != UINT64_MAX); | |
3476 | ||
3477 | if (fd < 0) | |
3478 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3479 | ||
3480 | /* Loopback block devices are not only useful to turn regular files into block devices, but | |
3481 | * also to cut out sections of block devices into new block devices. */ | |
3482 | ||
fd83c98e | 3483 | r = loop_device_make(fd, O_RDWR, p->offset, p->new_size, 0, 0, LOCK_EX, &d); |
53171c04 | 3484 | if (r < 0) |
5b5109e2 | 3485 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); |
53171c04 | 3486 | |
889914ef | 3487 | if (p->encrypt != ENCRYPT_OFF) { |
994b3031 | 3488 | r = partition_encrypt(context, p, d->node, &cd, &encrypted, &encrypted_dev_fd); |
b9df3536 LP |
3489 | if (r < 0) |
3490 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
3491 | ||
3492 | if (flock(encrypted_dev_fd, LOCK_EX) < 0) | |
3493 | return log_error_errno(errno, "Failed to lock LUKS device: %m"); | |
3494 | ||
3495 | fsdev = encrypted; | |
3496 | } else | |
3497 | fsdev = d->node; | |
3498 | ||
53171c04 LP |
3499 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
3500 | ||
3501 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", | |
3502 | * keyed off the partition UUID. */ | |
3503 | r = derive_uuid(p->new_uuid, "file-system-uuid", &fs_uuid); | |
3504 | if (r < 0) | |
3505 | return r; | |
3506 | ||
95bfd3cd DDM |
3507 | /* Ideally, we populate filesystems using our own code after creating the filesystem to |
3508 | * ensure consistent handling of chattrs, xattrs and other similar things. However, when | |
eb43379c DDM |
3509 | * using read-only filesystems such as squashfs, we can't populate after creating the |
3510 | * filesystem because it's read-only, so instead we create a temporary root to use as the | |
3511 | * source tree when generating the read-only filesystem. */ | |
95bfd3cd DDM |
3512 | r = partition_populate_directory(p, &root, &tmp_root); |
3513 | if (r < 0) | |
3514 | return r; | |
3515 | ||
3516 | r = make_filesystem(fsdev, p->format, strempty(p->new_label), root ?: tmp_root, fs_uuid, arg_discard); | |
b9df3536 LP |
3517 | if (r < 0) { |
3518 | encrypted_dev_fd = safe_close(encrypted_dev_fd); | |
3519 | (void) deactivate_luks(cd, encrypted); | |
53171c04 | 3520 | return r; |
b9df3536 | 3521 | } |
53171c04 LP |
3522 | |
3523 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
3524 | ||
b9df3536 | 3525 | /* The file system is now created, no need to delay udev further */ |
889914ef | 3526 | if (p->encrypt != ENCRYPT_OFF) |
b9df3536 LP |
3527 | if (flock(encrypted_dev_fd, LOCK_UN) < 0) |
3528 | return log_error_errno(errno, "Failed to unlock LUKS device: %m"); | |
3529 | ||
eb43379c | 3530 | /* Now, we can populate all the other filesystems that aren't read-only. */ |
95bfd3cd | 3531 | r = partition_populate_filesystem(p, fsdev); |
b9df3536 LP |
3532 | if (r < 0) { |
3533 | encrypted_dev_fd = safe_close(encrypted_dev_fd); | |
3534 | (void) deactivate_luks(cd, encrypted); | |
8a794850 | 3535 | return r; |
b9df3536 LP |
3536 | } |
3537 | ||
3538 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and | |
3539 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
3540 | * the disk. */ | |
3541 | ||
889914ef | 3542 | if (p->encrypt != ENCRYPT_OFF) { |
b9df3536 | 3543 | if (fsync(encrypted_dev_fd) < 0) |
8ac04a65 | 3544 | return log_error_errno(errno, "Failed to synchronize LUKS volume: %m"); |
b9df3536 LP |
3545 | encrypted_dev_fd = safe_close(encrypted_dev_fd); |
3546 | ||
3547 | r = deactivate_luks(cd, encrypted); | |
3548 | if (r < 0) | |
3549 | return r; | |
3550 | ||
0d12936d | 3551 | sym_crypt_free(cd); |
b9df3536 LP |
3552 | cd = NULL; |
3553 | } | |
8a794850 | 3554 | |
53171c04 LP |
3555 | r = loop_device_sync(d); |
3556 | if (r < 0) | |
3557 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3558 | } | |
3559 | ||
3560 | return 0; | |
3561 | } | |
3562 | ||
b5b7879a DDM |
3563 | static int do_verity_format( |
3564 | LoopDevice *data_device, | |
3565 | LoopDevice *hash_device, | |
3566 | uint64_t sector_size, | |
3567 | uint8_t **ret_roothash, | |
3568 | size_t *ret_roothash_size) { | |
3569 | ||
3570 | #if HAVE_LIBCRYPTSETUP | |
3571 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; | |
3572 | _cleanup_free_ uint8_t *rh = NULL; | |
3573 | size_t rhs; | |
3574 | int r; | |
3575 | ||
3576 | assert(data_device); | |
3577 | assert(hash_device); | |
3578 | assert(sector_size > 0); | |
3579 | assert(ret_roothash); | |
3580 | assert(ret_roothash_size); | |
3581 | ||
3582 | r = dlopen_cryptsetup(); | |
3583 | if (r < 0) | |
3584 | return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m"); | |
3585 | ||
3586 | r = sym_crypt_init(&cd, hash_device->node); | |
3587 | if (r < 0) | |
3588 | return log_error_errno(r, "Failed to allocate libcryptsetup context: %m"); | |
3589 | ||
3590 | r = sym_crypt_format( | |
3591 | cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, | |
3592 | &(struct crypt_params_verity){ | |
3593 | .data_device = data_device->node, | |
3594 | .flags = CRYPT_VERITY_CREATE_HASH, | |
3595 | .hash_name = "sha256", | |
3596 | .hash_type = 1, | |
3597 | .data_block_size = sector_size, | |
3598 | .hash_block_size = sector_size, | |
3599 | .salt_size = 32, | |
3600 | }); | |
3601 | if (r < 0) | |
3602 | return log_error_errno(r, "Failed to setup verity hash data: %m"); | |
3603 | ||
3604 | r = sym_crypt_get_volume_key_size(cd); | |
3605 | if (r < 0) | |
3606 | return log_error_errno(r, "Failed to determine verity root hash size: %m"); | |
3607 | rhs = (size_t) r; | |
3608 | ||
3609 | rh = malloc(rhs); | |
3610 | if (!rh) | |
3611 | return log_oom(); | |
3612 | ||
3613 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh, &rhs, NULL, 0); | |
3614 | if (r < 0) | |
3615 | return log_error_errno(r, "Failed to get verity root hash: %m"); | |
3616 | ||
3617 | *ret_roothash = TAKE_PTR(rh); | |
3618 | *ret_roothash_size = rhs; | |
3619 | ||
3620 | return 0; | |
3621 | #else | |
9c98e277 | 3622 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes: %m"); |
b5b7879a DDM |
3623 | #endif |
3624 | } | |
3625 | ||
b6db96a2 | 3626 | static int context_verity_hash(Context *context) { |
b5b7879a DDM |
3627 | int fd = -1, r; |
3628 | ||
3629 | assert(context); | |
3630 | ||
3631 | LIST_FOREACH(partitions, p, context->partitions) { | |
3632 | Partition *dp; | |
3633 | _cleanup_(loop_device_unrefp) LoopDevice *hash_device = NULL, *data_device = NULL; | |
3634 | _cleanup_free_ uint8_t *rh = NULL; | |
3635 | size_t rhs = 0; /* Initialize to work around for GCC false positive. */ | |
3636 | ||
3637 | if (p->dropped) | |
3638 | continue; | |
3639 | ||
3640 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3641 | continue; | |
3642 | ||
3643 | if (p->verity != VERITY_HASH) | |
3644 | continue; | |
3645 | ||
3646 | assert_se(dp = p->siblings[VERITY_DATA]); | |
3647 | assert(!dp->dropped); | |
3648 | ||
3649 | if (fd < 0) | |
3650 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3651 | ||
fd83c98e | 3652 | r = loop_device_make(fd, O_RDONLY, dp->offset, dp->new_size, 0, 0, LOCK_EX, &data_device); |
b5b7879a DDM |
3653 | if (r < 0) |
3654 | return log_error_errno(r, | |
3655 | "Failed to make loopback device of verity data partition %" PRIu64 ": %m", | |
3656 | p->partno); | |
3657 | ||
fd83c98e | 3658 | r = loop_device_make(fd, O_RDWR, p->offset, p->new_size, 0, 0, LOCK_EX, &hash_device); |
b5b7879a DDM |
3659 | if (r < 0) |
3660 | return log_error_errno(r, | |
3661 | "Failed to make loopback device of verity hash partition %" PRIu64 ": %m", | |
3662 | p->partno); | |
3663 | ||
3664 | r = do_verity_format(data_device, hash_device, context->sector_size, &rh, &rhs); | |
3665 | if (r < 0) | |
3666 | return r; | |
3667 | ||
3668 | assert(rhs >= sizeof(sd_id128_t) * 2); | |
3669 | ||
3670 | if (!dp->new_uuid_is_set) { | |
3671 | memcpy_safe(dp->new_uuid.bytes, rh, sizeof(sd_id128_t)); | |
3672 | dp->new_uuid_is_set = true; | |
3673 | } | |
3674 | ||
3675 | if (!p->new_uuid_is_set) { | |
3676 | memcpy_safe(p->new_uuid.bytes, rh + rhs - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
3677 | p->new_uuid_is_set = true; | |
3678 | } | |
3679 | ||
3680 | p->roothash = TAKE_PTR(rh); | |
3681 | p->roothash_size = rhs; | |
3682 | } | |
3683 | ||
3684 | return 0; | |
3685 | } | |
3686 | ||
b456191d DDM |
3687 | static int parse_x509_certificate(const char *certificate, size_t certificate_size, X509 **ret) { |
3688 | #if HAVE_OPENSSL | |
3689 | _cleanup_(X509_freep) X509 *cert = NULL; | |
3690 | _cleanup_(BIO_freep) BIO *cb = NULL; | |
3691 | ||
3692 | assert(certificate); | |
3693 | assert(certificate_size > 0); | |
3694 | assert(ret); | |
3695 | ||
3696 | cb = BIO_new_mem_buf(certificate, certificate_size); | |
3697 | if (!cb) | |
3698 | return log_oom(); | |
3699 | ||
3700 | cert = PEM_read_bio_X509(cb, NULL, NULL, NULL); | |
3701 | if (!cert) | |
3702 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Failed to parse X.509 certificate: %s", | |
3703 | ERR_error_string(ERR_get_error(), NULL)); | |
3704 | ||
3705 | if (ret) | |
3706 | *ret = TAKE_PTR(cert); | |
3707 | ||
3708 | return 0; | |
3709 | #else | |
3710 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse X509 certificate."); | |
3711 | #endif | |
3712 | } | |
3713 | ||
3714 | static int parse_private_key(const char *key, size_t key_size, EVP_PKEY **ret) { | |
3715 | #if HAVE_OPENSSL | |
3716 | _cleanup_(BIO_freep) BIO *kb = NULL; | |
3717 | _cleanup_(EVP_PKEY_freep) EVP_PKEY *pk = NULL; | |
3718 | ||
3719 | assert(key); | |
3720 | assert(key_size > 0); | |
3721 | assert(ret); | |
3722 | ||
3723 | kb = BIO_new_mem_buf(key, key_size); | |
3724 | if (!kb) | |
3725 | return log_oom(); | |
3726 | ||
3727 | pk = PEM_read_bio_PrivateKey(kb, NULL, NULL, NULL); | |
3728 | if (!pk) | |
3729 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to parse PEM private key: %s", | |
3730 | ERR_error_string(ERR_get_error(), NULL)); | |
3731 | ||
3732 | if (ret) | |
3733 | *ret = TAKE_PTR(pk); | |
3734 | ||
3735 | return 0; | |
3736 | #else | |
3737 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse private key."); | |
3738 | #endif | |
3739 | } | |
3740 | ||
3741 | static int sign_verity_roothash( | |
3742 | const uint8_t *roothash, | |
3743 | size_t roothash_size, | |
3744 | uint8_t **ret_signature, | |
3745 | size_t *ret_signature_size) { | |
3746 | ||
3747 | #if HAVE_OPENSSL | |
3748 | _cleanup_(BIO_freep) BIO *rb = NULL; | |
3749 | _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL; | |
3750 | _cleanup_free_ char *hex = NULL; | |
3751 | _cleanup_free_ uint8_t *sig = NULL; | |
3752 | int sigsz; | |
3753 | ||
3754 | assert(roothash); | |
3755 | assert(roothash_size > 0); | |
3756 | assert(ret_signature); | |
3757 | assert(ret_signature_size); | |
3758 | ||
3759 | hex = hexmem(roothash, roothash_size); | |
3760 | if (!hex) | |
3761 | return log_oom(); | |
3762 | ||
3763 | rb = BIO_new_mem_buf(hex, -1); | |
3764 | if (!rb) | |
3765 | return log_oom(); | |
3766 | ||
3767 | p7 = PKCS7_sign(arg_certificate, arg_private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY); | |
3768 | if (!p7) | |
3769 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s", | |
3770 | ERR_error_string(ERR_get_error(), NULL)); | |
3771 | ||
3772 | sigsz = i2d_PKCS7(p7, &sig); | |
3773 | if (sigsz < 0) | |
3774 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s", | |
3775 | ERR_error_string(ERR_get_error(), NULL)); | |
3776 | ||
3777 | *ret_signature = TAKE_PTR(sig); | |
3778 | *ret_signature_size = sigsz; | |
3779 | ||
3780 | return 0; | |
3781 | #else | |
3782 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot setup verity signature: %m"); | |
3783 | #endif | |
3784 | } | |
3785 | ||
3786 | static int context_verity_sig(Context *context) { | |
3787 | int fd = -1, r; | |
3788 | ||
3789 | assert(context); | |
3790 | ||
3791 | LIST_FOREACH(partitions, p, context->partitions) { | |
3792 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
3793 | _cleanup_free_ uint8_t *sig = NULL; | |
3794 | _cleanup_free_ char *text = NULL; | |
3795 | Partition *hp; | |
3796 | uint8_t fp[X509_FINGERPRINT_SIZE]; | |
419f2742 | 3797 | size_t sigsz = 0, padsz; /* avoid false maybe-uninitialized warning */ |
b456191d DDM |
3798 | |
3799 | if (p->dropped) | |
3800 | continue; | |
3801 | ||
3802 | if (PARTITION_EXISTS(p)) | |
3803 | continue; | |
3804 | ||
3805 | if (p->verity != VERITY_SIG) | |
3806 | continue; | |
3807 | ||
3808 | assert_se(hp = p->siblings[VERITY_HASH]); | |
3809 | assert(!hp->dropped); | |
3810 | ||
3811 | assert(arg_certificate); | |
3812 | ||
3813 | if (fd < 0) | |
3814 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3815 | ||
3816 | r = sign_verity_roothash(hp->roothash, hp->roothash_size, &sig, &sigsz); | |
3817 | if (r < 0) | |
3818 | return r; | |
3819 | ||
3820 | r = x509_fingerprint(arg_certificate, fp); | |
3821 | if (r < 0) | |
3822 | return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m"); | |
3823 | ||
3824 | r = json_build(&v, | |
3825 | JSON_BUILD_OBJECT( | |
3826 | JSON_BUILD_PAIR("rootHash", JSON_BUILD_HEX(hp->roothash, hp->roothash_size)), | |
3827 | JSON_BUILD_PAIR( | |
3828 | "certificateFingerprint", | |
3829 | JSON_BUILD_HEX(fp, sizeof(fp)) | |
3830 | ), | |
3831 | JSON_BUILD_PAIR("signature", JSON_BUILD_BASE64(sig, sigsz)) | |
3832 | ) | |
3833 | ); | |
3834 | if (r < 0) | |
3835 | return log_error_errno(r, "Failed to build JSON object: %m"); | |
3836 | ||
3837 | r = json_variant_format(v, 0, &text); | |
3838 | if (r < 0) | |
3839 | return log_error_errno(r, "Failed to format JSON object: %m"); | |
3840 | ||
3841 | padsz = round_up_size(strlen(text), 4096); | |
3842 | assert_se(padsz <= p->new_size); | |
3843 | ||
3844 | r = strgrowpad0(&text, padsz); | |
3845 | if (r < 0) | |
3846 | return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(padsz)); | |
3847 | ||
3848 | if (lseek(fd, p->offset, SEEK_SET) == (off_t) -1) | |
3849 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3850 | ||
3851 | r = loop_write(fd, text, padsz, /*do_poll=*/ false); | |
3852 | if (r < 0) | |
3853 | return log_error_errno(r, "Failed to write verity signature to partition: %m"); | |
3854 | ||
3855 | if (fsync(fd) < 0) | |
3856 | return log_error_errno(errno, "Failed to synchronize verity signature JSON: %m"); | |
3857 | } | |
3858 | ||
3859 | return 0; | |
3860 | } | |
3861 | ||
e594a3b1 LP |
3862 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
3863 | struct { | |
3864 | sd_id128_t type_uuid; | |
3865 | uint64_t counter; | |
695cfd53 | 3866 | } _packed_ plaintext = {}; |
e594a3b1 | 3867 | union { |
ade99252 | 3868 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
3869 | sd_id128_t id; |
3870 | } result; | |
3871 | ||
3872 | uint64_t k = 0; | |
e594a3b1 LP |
3873 | int r; |
3874 | ||
3875 | assert(context); | |
3876 | assert(p); | |
3877 | assert(ret); | |
3878 | ||
3879 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
3880 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
3881 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
3882 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
3883 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
3884 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
3885 | * second and later partition of the same type) if we have more than one partition of the same | |
3886 | * time. Or in other words: | |
3887 | * | |
3888 | * With: | |
3889 | * SEED := /etc/machine-id | |
3890 | * | |
3891 | * If first partition instance of type TYPE_UUID: | |
3892 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
3893 | * | |
3894 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
3895 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
3896 | */ | |
3897 | ||
3898 | LIST_FOREACH(partitions, q, context->partitions) { | |
3899 | if (p == q) | |
3900 | break; | |
3901 | ||
3902 | if (!sd_id128_equal(p->type_uuid, q->type_uuid)) | |
3903 | continue; | |
3904 | ||
3905 | k++; | |
3906 | } | |
3907 | ||
3908 | plaintext.type_uuid = p->type_uuid; | |
3909 | plaintext.counter = htole64(k); | |
3910 | ||
ade99252 KK |
3911 | hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes), |
3912 | &plaintext, | |
3913 | k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
3914 | result.md); | |
e594a3b1 LP |
3915 | |
3916 | /* Take the first half, mark it as v4 UUID */ | |
3917 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
3918 | result.id = id128_make_v4_uuid(result.id); | |
3919 | ||
3920 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
3921 | LIST_FOREACH(partitions, q, context->partitions) { | |
3922 | if (p == q) | |
3923 | continue; | |
3924 | ||
580f48cc | 3925 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 3926 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
3927 | |
3928 | r = sd_id128_randomize(&result.id); | |
3929 | if (r < 0) | |
3930 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
3931 | ||
3932 | break; | |
3933 | } | |
3934 | } | |
3935 | ||
3936 | *ret = result.id; | |
3937 | return 0; | |
3938 | } | |
3939 | ||
3940 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
3941 | _cleanup_free_ char *label = NULL; | |
3942 | const char *prefix; | |
3943 | unsigned k = 1; | |
3944 | ||
3945 | assert(context); | |
3946 | assert(p); | |
3947 | assert(ret); | |
3948 | ||
3949 | prefix = gpt_partition_type_uuid_to_string(p->type_uuid); | |
3950 | if (!prefix) | |
3951 | prefix = "linux"; | |
3952 | ||
3953 | for (;;) { | |
3954 | const char *ll = label ?: prefix; | |
3955 | bool retry = false; | |
e594a3b1 LP |
3956 | |
3957 | LIST_FOREACH(partitions, q, context->partitions) { | |
3958 | if (p == q) | |
3959 | break; | |
3960 | ||
3961 | if (streq_ptr(ll, q->current_label) || | |
3962 | streq_ptr(ll, q->new_label)) { | |
3963 | retry = true; | |
3964 | break; | |
3965 | } | |
3966 | } | |
3967 | ||
3968 | if (!retry) | |
3969 | break; | |
3970 | ||
3971 | label = mfree(label); | |
e594a3b1 LP |
3972 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
3973 | return log_oom(); | |
3974 | } | |
3975 | ||
3976 | if (!label) { | |
3977 | label = strdup(prefix); | |
3978 | if (!label) | |
3979 | return log_oom(); | |
3980 | } | |
3981 | ||
3982 | *ret = TAKE_PTR(label); | |
3983 | return 0; | |
3984 | } | |
3985 | ||
3986 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
e594a3b1 LP |
3987 | int r; |
3988 | ||
3989 | assert(context); | |
3990 | ||
3991 | LIST_FOREACH(partitions, p, context->partitions) { | |
e594a3b1 LP |
3992 | /* Never touch foreign partitions */ |
3993 | if (PARTITION_IS_FOREIGN(p)) { | |
3994 | p->new_uuid = p->current_uuid; | |
3995 | ||
3996 | if (p->current_label) { | |
78eee6ce LP |
3997 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
3998 | if (r < 0) | |
3999 | return r; | |
e594a3b1 LP |
4000 | } |
4001 | ||
4002 | continue; | |
4003 | } | |
4004 | ||
4005 | if (!sd_id128_is_null(p->current_uuid)) | |
4006 | p->new_uuid = p->current_uuid; /* Never change initialized UUIDs */ | |
b456191d | 4007 | else if (!p->new_uuid_is_set && !IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) { |
12963533 | 4008 | /* Not explicitly set by user! */ |
e594a3b1 LP |
4009 | r = partition_acquire_uuid(context, p, &p->new_uuid); |
4010 | if (r < 0) | |
4011 | return r; | |
11749b61 DDM |
4012 | |
4013 | p->new_uuid_is_set = true; | |
e594a3b1 LP |
4014 | } |
4015 | ||
4016 | if (!isempty(p->current_label)) { | |
78eee6ce LP |
4017 | /* never change initialized labels */ |
4018 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
4019 | if (r < 0) | |
4020 | return r; | |
12963533 TH |
4021 | } else if (!p->new_label) { |
4022 | /* Not explicitly set by user! */ | |
4023 | ||
e594a3b1 LP |
4024 | r = partition_acquire_label(context, p, &p->new_label); |
4025 | if (r < 0) | |
4026 | return r; | |
4027 | } | |
4028 | } | |
4029 | ||
4030 | return 0; | |
4031 | } | |
4032 | ||
e73309c5 LP |
4033 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
4034 | _cleanup_free_ char *a = NULL; | |
4035 | ||
4036 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
4037 | uint64_t bit = UINT64_C(1) << i; | |
4038 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
4039 | ||
4040 | if (!FLAGS_SET(flags, bit)) | |
4041 | continue; | |
4042 | ||
4043 | xsprintf(buf, "%u", i); | |
4044 | if (!strextend_with_separator(&a, ",", buf)) | |
4045 | return -ENOMEM; | |
4046 | } | |
4047 | ||
4048 | return fdisk_partition_set_attrs(q, a); | |
4049 | } | |
4050 | ||
1c41c1dc LP |
4051 | static uint64_t partition_merge_flags(Partition *p) { |
4052 | uint64_t f; | |
4053 | ||
4054 | assert(p); | |
4055 | ||
4056 | f = p->gpt_flags; | |
4057 | ||
ff0771bf LP |
4058 | if (p->no_auto >= 0) { |
4059 | if (gpt_partition_type_knows_no_auto(p->type_uuid)) | |
92e72028 | 4060 | SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto); |
ff0771bf | 4061 | else { |
b7416360 | 4062 | char buffer[SD_ID128_UUID_STRING_MAX]; |
ff0771bf LP |
4063 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", |
4064 | yes_no(p->no_auto), | |
4065 | gpt_partition_type_uuid_to_string_harder(p->type_uuid, buffer)); | |
4066 | } | |
4067 | } | |
4068 | ||
1c41c1dc LP |
4069 | if (p->read_only >= 0) { |
4070 | if (gpt_partition_type_knows_read_only(p->type_uuid)) | |
92e72028 | 4071 | SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only); |
1c41c1dc | 4072 | else { |
b7416360 | 4073 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4074 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", |
4075 | yes_no(p->read_only), | |
4076 | gpt_partition_type_uuid_to_string_harder(p->type_uuid, buffer)); | |
4077 | } | |
4078 | } | |
4079 | ||
4080 | if (p->growfs >= 0) { | |
4081 | if (gpt_partition_type_knows_growfs(p->type_uuid)) | |
92e72028 | 4082 | SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs); |
1c41c1dc | 4083 | else { |
b7416360 | 4084 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4085 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", |
4086 | yes_no(p->growfs), | |
4087 | gpt_partition_type_uuid_to_string_harder(p->type_uuid, buffer)); | |
4088 | } | |
4089 | } | |
4090 | ||
4091 | return f; | |
4092 | } | |
4093 | ||
f28d4f42 | 4094 | static int context_mangle_partitions(Context *context) { |
f28d4f42 | 4095 | int r; |
e594a3b1 LP |
4096 | |
4097 | assert(context); | |
4098 | ||
e594a3b1 LP |
4099 | LIST_FOREACH(partitions, p, context->partitions) { |
4100 | if (p->dropped) | |
4101 | continue; | |
4102 | ||
4103 | assert(p->new_size != UINT64_MAX); | |
4104 | assert(p->offset != UINT64_MAX); | |
4105 | assert(p->partno != UINT64_MAX); | |
4106 | ||
4107 | if (PARTITION_EXISTS(p)) { | |
4108 | bool changed = false; | |
4109 | ||
4110 | assert(p->current_partition); | |
4111 | ||
4112 | if (p->new_size != p->current_size) { | |
4113 | assert(p->new_size >= p->current_size); | |
994b3031 | 4114 | assert(p->new_size % context->sector_size == 0); |
e594a3b1 LP |
4115 | |
4116 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
4117 | if (r < 0) | |
4118 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4119 | ||
994b3031 | 4120 | r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size); |
e594a3b1 LP |
4121 | if (r < 0) |
4122 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4123 | ||
4124 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
4125 | changed = true; | |
4126 | } | |
4127 | ||
4128 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
b7416360 | 4129 | r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4130 | if (r < 0) |
4131 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4132 | ||
4133 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
4134 | changed = true; | |
4135 | } | |
4136 | ||
4137 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 4138 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
4139 | if (r < 0) |
4140 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4141 | ||
4142 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
4143 | changed = true; | |
4144 | } | |
4145 | ||
4146 | if (changed) { | |
4147 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
4148 | ||
4149 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
4150 | if (r < 0) | |
4151 | return log_error_errno(r, "Failed to update partition: %m"); | |
4152 | } | |
4153 | } else { | |
4154 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
4155 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
e594a3b1 LP |
4156 | |
4157 | assert(!p->new_partition); | |
994b3031 LP |
4158 | assert(p->offset % context->sector_size == 0); |
4159 | assert(p->new_size % context->sector_size == 0); | |
be9ce018 | 4160 | assert(p->new_label); |
e594a3b1 LP |
4161 | |
4162 | t = fdisk_new_parttype(); | |
4163 | if (!t) | |
4164 | return log_oom(); | |
4165 | ||
b7416360 | 4166 | r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type_uuid)); |
e594a3b1 LP |
4167 | if (r < 0) |
4168 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
4169 | ||
4170 | q = fdisk_new_partition(); | |
4171 | if (!q) | |
4172 | return log_oom(); | |
4173 | ||
4174 | r = fdisk_partition_set_type(q, t); | |
4175 | if (r < 0) | |
4176 | return log_error_errno(r, "Failed to set partition type: %m"); | |
4177 | ||
4178 | r = fdisk_partition_size_explicit(q, true); | |
4179 | if (r < 0) | |
4180 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4181 | ||
994b3031 | 4182 | r = fdisk_partition_set_start(q, p->offset / context->sector_size); |
e594a3b1 LP |
4183 | if (r < 0) |
4184 | return log_error_errno(r, "Failed to position partition: %m"); | |
4185 | ||
994b3031 | 4186 | r = fdisk_partition_set_size(q, p->new_size / context->sector_size); |
e594a3b1 LP |
4187 | if (r < 0) |
4188 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4189 | ||
4190 | r = fdisk_partition_set_partno(q, p->partno); | |
4191 | if (r < 0) | |
4192 | return log_error_errno(r, "Failed to set partition number: %m"); | |
4193 | ||
b7416360 | 4194 | r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4195 | if (r < 0) |
4196 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4197 | ||
be9ce018 | 4198 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
4199 | if (r < 0) |
4200 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4201 | ||
ff0771bf | 4202 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 4203 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
4204 | if (r < 0) |
4205 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
4206 | ||
5b5109e2 | 4207 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
4208 | |
4209 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
4210 | if (r < 0) | |
4211 | return log_error_errno(r, "Failed to add partition: %m"); | |
4212 | ||
4213 | assert(!p->new_partition); | |
4214 | p->new_partition = TAKE_PTR(q); | |
4215 | } | |
4216 | } | |
4217 | ||
f28d4f42 LP |
4218 | return 0; |
4219 | } | |
4220 | ||
4cee8333 DDM |
4221 | static int split_name_printf(Partition *p) { |
4222 | assert(p); | |
4223 | ||
4224 | const Specifier table[] = { | |
4225 | { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type_uuid) }, | |
4226 | { 'T', specifier_id128, &p->type_uuid }, | |
4227 | { 'U', specifier_id128, &p->new_uuid }, | |
4228 | { 'n', specifier_uint64, &p->partno }, | |
4229 | ||
4230 | COMMON_SYSTEM_SPECIFIERS, | |
4231 | {} | |
4232 | }; | |
4233 | ||
4234 | return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, &p->split_name_resolved); | |
4235 | } | |
4236 | ||
4237 | static int split_name_resolve(Context *context) { | |
4238 | int r; | |
4239 | ||
4240 | LIST_FOREACH(partitions, p, context->partitions) { | |
4241 | if (p->dropped) | |
4242 | continue; | |
4243 | ||
4244 | if (!p->split_name_format) | |
4245 | continue; | |
4246 | ||
4247 | r = split_name_printf(p); | |
4248 | if (r < 0) | |
4249 | return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format); | |
4250 | } | |
4251 | ||
4252 | LIST_FOREACH(partitions, p, context->partitions) { | |
4253 | if (!p->split_name_resolved) | |
4254 | continue; | |
4255 | ||
4256 | LIST_FOREACH(partitions, q, context->partitions) { | |
4257 | if (p == q) | |
4258 | continue; | |
4259 | ||
4260 | if (!q->split_name_resolved) | |
4261 | continue; | |
4262 | ||
4263 | if (!streq(p->split_name_resolved, q->split_name_resolved)) | |
4264 | continue; | |
4265 | ||
4266 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
4267 | "%s and %s have the same resolved split name \"%s\", refusing", | |
4268 | p->definition_path, q->definition_path, p->split_name_resolved); | |
4269 | } | |
4270 | } | |
4271 | ||
4272 | return 0; | |
4273 | } | |
4274 | ||
4275 | static int split_node(const char *node, char **ret_base, char **ret_ext) { | |
4276 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
4277 | char *e; | |
4278 | int r; | |
4279 | ||
4280 | assert(node); | |
4281 | assert(ret_base); | |
4282 | assert(ret_ext); | |
4283 | ||
4284 | r = path_extract_filename(node, &base); | |
4285 | if (r == O_DIRECTORY || r == -EADDRNOTAVAIL) | |
4286 | return log_error_errno(r, "Device node %s cannot be a directory", arg_node); | |
4287 | if (r < 0) | |
4288 | return log_error_errno(r, "Failed to extract filename from %s: %m", arg_node); | |
4289 | ||
4290 | e = endswith(base, ".raw"); | |
4291 | if (e) { | |
4292 | ext = strdup(e); | |
4293 | if (!ext) | |
4294 | return log_oom(); | |
4295 | ||
4296 | *e = 0; | |
4297 | } | |
4298 | ||
4299 | *ret_base = TAKE_PTR(base); | |
4300 | *ret_ext = TAKE_PTR(ext); | |
4301 | ||
4302 | return 0; | |
4303 | } | |
4304 | ||
4305 | static int context_split(Context *context) { | |
4306 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
4307 | _cleanup_close_ int dir_fd = -1; | |
4308 | int fd = -1, r; | |
4309 | ||
4310 | if (!arg_split) | |
4311 | return 0; | |
4312 | ||
4313 | assert(context); | |
4314 | assert(arg_node); | |
4315 | ||
4316 | /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled | |
4317 | * in after they've been generated. */ | |
4318 | ||
4319 | r = split_name_resolve(context); | |
4320 | if (r < 0) | |
4321 | return r; | |
4322 | ||
4323 | r = split_node(arg_node, &base, &ext); | |
4324 | if (r < 0) | |
4325 | return r; | |
4326 | ||
4327 | dir_fd = r = open_parent(arg_node, O_PATH|O_CLOEXEC, 0); | |
4328 | if (r == -EDESTADDRREQ) | |
4329 | dir_fd = AT_FDCWD; | |
4330 | else if (r < 0) | |
4331 | return log_error_errno(r, "Failed to open parent directory of %s: %m", arg_node); | |
4332 | ||
4333 | LIST_FOREACH(partitions, p, context->partitions) { | |
4334 | _cleanup_free_ char *fname = NULL; | |
4335 | _cleanup_close_ int fdt = -1; | |
4336 | ||
4337 | if (p->dropped) | |
4338 | continue; | |
4339 | ||
4340 | if (!p->split_name_resolved) | |
4341 | continue; | |
4342 | ||
4343 | fname = strjoin(base, ".", p->split_name_resolved, ext); | |
4344 | if (!fname) | |
4345 | return log_oom(); | |
4346 | ||
4347 | fdt = openat(dir_fd, fname, O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL, 0666); | |
4348 | if (fdt < 0) | |
4349 | return log_error_errno(errno, "Failed to open %s: %m", fname); | |
4350 | ||
4351 | if (fd < 0) | |
4352 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
4353 | ||
4354 | if (lseek(fd, p->offset, SEEK_SET) < 0) | |
4355 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
4356 | ||
4357 | r = copy_bytes_full(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES, NULL, NULL, NULL, NULL); | |
4358 | if (r < 0) | |
4359 | return log_error_errno(r, "Failed to copy to split partition %s: %m", fname); | |
4360 | } | |
4361 | ||
4362 | return 0; | |
4363 | } | |
4364 | ||
f28d4f42 LP |
4365 | static int context_write_partition_table( |
4366 | Context *context, | |
4367 | const char *node, | |
4368 | bool from_scratch) { | |
4369 | ||
4370 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; | |
4371 | int capable, r; | |
4372 | ||
4373 | assert(context); | |
4374 | ||
f28d4f42 LP |
4375 | if (!from_scratch && !context_changed(context)) { |
4376 | log_info("No changes."); | |
4377 | return 0; | |
4378 | } | |
4379 | ||
4380 | if (arg_dry_run) { | |
4381 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
4382 | return 0; | |
4383 | } | |
4384 | ||
4385 | log_info("Applying changes."); | |
4386 | ||
4387 | if (from_scratch) { | |
81873a6b LP |
4388 | r = context_wipe_range(context, 0, context->total); |
4389 | if (r < 0) | |
4390 | return r; | |
4391 | ||
4392 | log_info("Wiped block device."); | |
4393 | ||
f28d4f42 LP |
4394 | r = context_discard_range(context, 0, context->total); |
4395 | if (r == -EOPNOTSUPP) | |
5b5109e2 | 4396 | log_info("Storage does not support discard, not discarding entire block device data."); |
f28d4f42 LP |
4397 | else if (r < 0) |
4398 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
4399 | else if (r > 0) | |
4400 | log_info("Discarded entire block device."); | |
4401 | } | |
4402 | ||
4403 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
4404 | if (r < 0) | |
4405 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
4406 | ||
4407 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
4408 | * gaps between partitions, just to be sure. */ | |
4409 | r = context_wipe_and_discard(context, from_scratch); | |
4410 | if (r < 0) | |
4411 | return r; | |
4412 | ||
4413 | r = context_copy_blocks(context); | |
4414 | if (r < 0) | |
4415 | return r; | |
4416 | ||
4417 | r = context_mkfs(context); | |
4418 | if (r < 0) | |
4419 | return r; | |
4420 | ||
b6db96a2 | 4421 | r = context_verity_hash(context); |
b5b7879a DDM |
4422 | if (r < 0) |
4423 | return r; | |
4424 | ||
b456191d | 4425 | r = context_verity_sig(context); |
b5b7879a DDM |
4426 | if (r < 0) |
4427 | return r; | |
4428 | ||
f28d4f42 LP |
4429 | r = context_mangle_partitions(context); |
4430 | if (r < 0) | |
4431 | return r; | |
4432 | ||
e594a3b1 LP |
4433 | log_info("Writing new partition table."); |
4434 | ||
4435 | r = fdisk_write_disklabel(context->fdisk_context); | |
4436 | if (r < 0) | |
4437 | return log_error_errno(r, "Failed to write partition table: %m"); | |
4438 | ||
911ba624 | 4439 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
4440 | if (capable == -ENOTBLK) |
4441 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
4442 | else if (capable < 0) | |
911ba624 | 4443 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 4444 | else if (capable > 0) { |
e594a3b1 LP |
4445 | log_info("Telling kernel to reread partition table."); |
4446 | ||
4447 | if (from_scratch) | |
4448 | r = fdisk_reread_partition_table(context->fdisk_context); | |
4449 | else | |
4450 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
4451 | if (r < 0) | |
4452 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
4453 | } else | |
4454 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
4455 | ||
4456 | log_info("All done."); | |
4457 | ||
4458 | return 0; | |
4459 | } | |
4460 | ||
4461 | static int context_read_seed(Context *context, const char *root) { | |
4462 | int r; | |
4463 | ||
4464 | assert(context); | |
4465 | ||
4466 | if (!sd_id128_is_null(context->seed)) | |
4467 | return 0; | |
4468 | ||
4469 | if (!arg_randomize) { | |
4470 | _cleanup_close_ int fd = -1; | |
4471 | ||
4472 | fd = chase_symlinks_and_open("/etc/machine-id", root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC, NULL); | |
4473 | if (fd == -ENOENT) | |
4474 | log_info("No machine ID set, using randomized partition UUIDs."); | |
4475 | else if (fd < 0) | |
4476 | return log_error_errno(fd, "Failed to determine machine ID of image: %m"); | |
4477 | else { | |
448b782c | 4478 | r = id128_read_fd(fd, ID128_PLAIN_OR_UNINIT, &context->seed); |
e594a3b1 LP |
4479 | if (r == -ENOMEDIUM) |
4480 | log_info("No machine ID set, using randomized partition UUIDs."); | |
4481 | else if (r < 0) | |
4482 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
4483 | ||
4484 | return 0; | |
4485 | } | |
4486 | } | |
4487 | ||
4488 | r = sd_id128_randomize(&context->seed); | |
4489 | if (r < 0) | |
4490 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
4491 | ||
4492 | return 0; | |
4493 | } | |
4494 | ||
4495 | static int context_factory_reset(Context *context, bool from_scratch) { | |
e594a3b1 LP |
4496 | size_t n = 0; |
4497 | int r; | |
4498 | ||
4499 | assert(context); | |
4500 | ||
4501 | if (arg_factory_reset <= 0) | |
4502 | return 0; | |
4503 | ||
4504 | if (from_scratch) /* Nothing to reset if we start from scratch */ | |
4505 | return 0; | |
4506 | ||
4507 | if (arg_dry_run) { | |
4508 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
4509 | return 0; | |
4510 | } | |
4511 | ||
4512 | log_info("Applying factory reset."); | |
4513 | ||
4514 | LIST_FOREACH(partitions, p, context->partitions) { | |
4515 | ||
4516 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
4517 | continue; | |
4518 | ||
4519 | assert(p->partno != UINT64_MAX); | |
4520 | ||
4521 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
4522 | ||
4523 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
4524 | if (r < 0) | |
4525 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
4526 | ||
4527 | n++; | |
4528 | } | |
4529 | ||
4530 | if (n == 0) { | |
4531 | log_info("Factory reset requested, but no partitions to delete found."); | |
4532 | return 0; | |
4533 | } | |
4534 | ||
4535 | r = fdisk_write_disklabel(context->fdisk_context); | |
4536 | if (r < 0) | |
4537 | return log_error_errno(r, "Failed to write disk label: %m"); | |
4538 | ||
4539 | log_info("Successfully deleted %zu partitions.", n); | |
4540 | return 1; | |
4541 | } | |
4542 | ||
4543 | static int context_can_factory_reset(Context *context) { | |
e594a3b1 LP |
4544 | assert(context); |
4545 | ||
4546 | LIST_FOREACH(partitions, p, context->partitions) | |
4547 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
4548 | return true; | |
4549 | ||
4550 | return false; | |
4551 | } | |
4552 | ||
5c08da58 LP |
4553 | static int resolve_copy_blocks_auto_candidate( |
4554 | dev_t partition_devno, | |
4555 | sd_id128_t partition_type_uuid, | |
4556 | dev_t restrict_devno, | |
4557 | sd_id128_t *ret_uuid) { | |
4558 | ||
4559 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
5c08da58 | 4560 | _cleanup_close_ int fd = -1; |
ca822829 YW |
4561 | _cleanup_free_ char *p = NULL; |
4562 | const char *pttype, *t; | |
5c08da58 LP |
4563 | sd_id128_t pt_parsed, u; |
4564 | blkid_partition pp; | |
4565 | dev_t whole_devno; | |
4566 | blkid_partlist pl; | |
5c08da58 LP |
4567 | int r; |
4568 | ||
4569 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
4570 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
4571 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
4572 | * one of the two. */ | |
4573 | ||
4574 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
4575 | if (r < 0) | |
4576 | return log_error_errno( | |
4577 | r, | |
4578 | "Unable to determine containing block device of partition %u:%u: %m", | |
4579 | major(partition_devno), minor(partition_devno)); | |
4580 | ||
4581 | if (restrict_devno != (dev_t) -1 && | |
4582 | restrict_devno != whole_devno) | |
4583 | return log_error_errno( | |
4584 | SYNTHETIC_ERRNO(EPERM), | |
4585 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
4586 | major(partition_devno), minor(partition_devno), | |
4587 | major(restrict_devno), minor(restrict_devno)); | |
4588 | ||
ca822829 | 4589 | fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p); |
5c08da58 | 4590 | if (r < 0) |
ca822829 YW |
4591 | return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m", |
4592 | DEVNUM_FORMAT_VAL(whole_devno)); | |
5c08da58 LP |
4593 | |
4594 | b = blkid_new_probe(); | |
4595 | if (!b) | |
4596 | return log_oom(); | |
4597 | ||
4598 | errno = 0; | |
4599 | r = blkid_probe_set_device(b, fd, 0, 0); | |
4600 | if (r != 0) | |
4601 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
4602 | ||
4603 | (void) blkid_probe_enable_partitions(b, 1); | |
4604 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
4605 | ||
4606 | errno = 0; | |
4607 | r = blkid_do_safeprobe(b); | |
4608 | if (IN_SET(r, -2, 1)) { /* nothing found or ambiguous result */ | |
4609 | log_debug("Didn't find partition table on block device '%s'.", p); | |
4610 | return false; | |
4611 | } | |
4612 | if (r != 0) | |
4613 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
4614 | ||
4615 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
4616 | if (!streq_ptr(pttype, "gpt")) { | |
4617 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
4618 | return false; | |
4619 | } | |
4620 | ||
4621 | errno = 0; | |
4622 | pl = blkid_probe_get_partitions(b); | |
4623 | if (!pl) | |
4624 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
4625 | errno = 0; | |
4626 | ||
4627 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
4628 | if (!pp) { | |
4629 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
4630 | major(partition_devno), minor(partition_devno), p); | |
4631 | return false; | |
4632 | } | |
4633 | ||
4634 | t = blkid_partition_get_type_string(pp); | |
4635 | if (isempty(t)) { | |
4636 | log_debug("Partition %u:%u has no type on '%s'.", | |
4637 | major(partition_devno), minor(partition_devno), p); | |
4638 | return false; | |
4639 | } | |
4640 | ||
4641 | r = sd_id128_from_string(t, &pt_parsed); | |
4642 | if (r < 0) { | |
4643 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
4644 | return false; | |
4645 | } | |
4646 | ||
4647 | if (!sd_id128_equal(pt_parsed, partition_type_uuid)) { | |
4648 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", | |
4649 | major(partition_devno), minor(partition_devno), | |
4650 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type_uuid)); | |
4651 | return false; | |
4652 | } | |
4653 | ||
4654 | t = blkid_partition_get_uuid(pp); | |
4655 | if (isempty(t)) { | |
4656 | log_debug("Partition %u:%u has no UUID.", | |
4657 | major(partition_devno), minor(partition_devno)); | |
4658 | return false; | |
4659 | } | |
4660 | ||
4661 | r = sd_id128_from_string(t, &u); | |
4662 | if (r < 0) { | |
4663 | log_debug_errno(r, "Failed to parse partition UUID \"%s\": %m", t); | |
4664 | return false; | |
4665 | } | |
4666 | ||
4667 | log_debug("Automatically found partition %u:%u of right type " SD_ID128_FORMAT_STR ".", | |
4668 | major(partition_devno), minor(partition_devno), | |
4669 | SD_ID128_FORMAT_VAL(pt_parsed)); | |
4670 | ||
4671 | if (ret_uuid) | |
4672 | *ret_uuid = u; | |
4673 | ||
4674 | return true; | |
4675 | } | |
4676 | ||
4677 | static int find_backing_devno( | |
4678 | const char *path, | |
4679 | const char *root, | |
4680 | dev_t *ret) { | |
4681 | ||
4682 | _cleanup_free_ char *resolved = NULL; | |
4683 | int r; | |
4684 | ||
4685 | assert(path); | |
4686 | ||
4687 | r = chase_symlinks(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); | |
4688 | if (r < 0) | |
4689 | return r; | |
4690 | ||
4691 | r = path_is_mount_point(resolved, NULL, 0); | |
4692 | if (r < 0) | |
4693 | return r; | |
4694 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
4695 | return -ENOENT; | |
4696 | ||
4697 | r = get_block_device(resolved, ret); | |
4698 | if (r < 0) | |
4699 | return r; | |
4700 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
4701 | return -ENOENT; | |
4702 | ||
4703 | return 0; | |
4704 | } | |
4705 | ||
4706 | static int resolve_copy_blocks_auto( | |
4707 | sd_id128_t type_uuid, | |
4708 | const char *root, | |
4709 | dev_t restrict_devno, | |
1a037ba2 | 4710 | dev_t *ret_devno, |
5c08da58 LP |
4711 | sd_id128_t *ret_uuid) { |
4712 | ||
4713 | const char *try1 = NULL, *try2 = NULL; | |
4714 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
4715 | _cleanup_(closedirp) DIR *d = NULL; | |
4716 | sd_id128_t found_uuid = SD_ID128_NULL; | |
4717 | dev_t devno, found = 0; | |
4718 | int r; | |
4719 | ||
5c08da58 LP |
4720 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the |
4721 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
4722 | * and restrict block device references in the --image= case to loopback block device we set up. | |
4723 | * | |
4724 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
4725 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
4726 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
4727 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
4728 | ||
4729 | if (restrict_devno == 0) | |
4730 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
4731 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
4732 | ||
4733 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching | |
4734 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
4735 | * type matches. */ | |
4736 | ||
4737 | if (gpt_partition_type_is_root(type_uuid)) | |
4738 | try1 = "/"; | |
4739 | else if (gpt_partition_type_is_usr(type_uuid)) | |
4740 | try1 = "/usr/"; | |
4741 | else if (gpt_partition_type_is_root_verity(type_uuid)) | |
4742 | try1 = "/"; | |
4743 | else if (gpt_partition_type_is_usr_verity(type_uuid)) | |
4744 | try1 = "/usr/"; | |
92e72028 | 4745 | else if (sd_id128_equal(type_uuid, SD_GPT_ESP)) { |
5c08da58 LP |
4746 | try1 = "/efi/"; |
4747 | try2 = "/boot/"; | |
92e72028 | 4748 | } else if (sd_id128_equal(type_uuid, SD_GPT_XBOOTLDR)) |
5c08da58 LP |
4749 | try1 = "/boot/"; |
4750 | else | |
4751 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
4752 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
4753 | SD_ID128_FORMAT_VAL(type_uuid)); | |
4754 | ||
4755 | r = find_backing_devno(try1, root, &devno); | |
4756 | if (r == -ENOENT && try2) | |
4757 | r = find_backing_devno(try2, root, &devno); | |
4758 | if (r < 0) | |
4759 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
4760 | SD_ID128_FORMAT_VAL(type_uuid)); | |
4761 | ||
4762 | xsprintf_sys_block_path(p, "/slaves", devno); | |
4763 | d = opendir(p); | |
4764 | if (d) { | |
4765 | struct dirent *de; | |
4766 | ||
4767 | for (;;) { | |
4768 | _cleanup_free_ char *q = NULL, *t = NULL; | |
4769 | sd_id128_t u; | |
4770 | dev_t sl; | |
4771 | ||
4772 | errno = 0; | |
4773 | de = readdir_no_dot(d); | |
4774 | if (!de) { | |
4775 | if (errno != 0) | |
4776 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
4777 | ||
4778 | break; | |
4779 | } | |
4780 | ||
4781 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
4782 | continue; | |
4783 | ||
4784 | q = path_join(p, de->d_name, "/dev"); | |
4785 | if (!q) | |
4786 | return log_oom(); | |
4787 | ||
4788 | r = read_one_line_file(q, &t); | |
4789 | if (r < 0) | |
4790 | return log_error_errno(r, "Failed to read %s: %m", q); | |
4791 | ||
7176f06c | 4792 | r = parse_devnum(t, &sl); |
5c08da58 LP |
4793 | if (r < 0) { |
4794 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
4795 | continue; | |
4796 | } | |
4797 | if (major(sl) == 0) { | |
4798 | log_debug_errno(r, "Device backing %s is special, ignoring: %m", q); | |
4799 | continue; | |
4800 | } | |
4801 | ||
4802 | r = resolve_copy_blocks_auto_candidate(sl, type_uuid, restrict_devno, &u); | |
4803 | if (r < 0) | |
4804 | return r; | |
4805 | if (r > 0) { | |
4806 | /* We found a matching one! */ | |
4807 | if (found != 0) | |
4808 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
4809 | "Multiple matching partitions found, refusing."); | |
4810 | ||
4811 | found = sl; | |
4812 | found_uuid = u; | |
4813 | } | |
4814 | } | |
4815 | } else if (errno != ENOENT) | |
4816 | return log_error_errno(errno, "Failed open %s: %m", p); | |
4817 | else { | |
4818 | r = resolve_copy_blocks_auto_candidate(devno, type_uuid, restrict_devno, &found_uuid); | |
4819 | if (r < 0) | |
4820 | return r; | |
4821 | if (r > 0) | |
4822 | found = devno; | |
4823 | } | |
4824 | ||
4825 | if (found == 0) | |
4826 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
4827 | "Unable to automatically discover suitable partition to copy blocks from."); | |
4828 | ||
1a037ba2 YW |
4829 | if (ret_devno) |
4830 | *ret_devno = found; | |
5c08da58 LP |
4831 | |
4832 | if (ret_uuid) | |
4833 | *ret_uuid = found_uuid; | |
4834 | ||
4835 | return 0; | |
4836 | } | |
4837 | ||
4838 | static int context_open_copy_block_paths( | |
4839 | Context *context, | |
4840 | const char *root, | |
4841 | dev_t restrict_devno) { | |
4842 | ||
757bc2e4 LP |
4843 | int r; |
4844 | ||
4845 | assert(context); | |
4846 | ||
4847 | LIST_FOREACH(partitions, p, context->partitions) { | |
4848 | _cleanup_close_ int source_fd = -1; | |
5c08da58 LP |
4849 | _cleanup_free_ char *opened = NULL; |
4850 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
4851 | uint64_t size; |
4852 | struct stat st; | |
4853 | ||
4854 | assert(p->copy_blocks_fd < 0); | |
4855 | assert(p->copy_blocks_size == UINT64_MAX); | |
4856 | ||
4857 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
4858 | continue; | |
4859 | ||
5c08da58 | 4860 | if (p->copy_blocks_path) { |
757bc2e4 | 4861 | |
5c08da58 LP |
4862 | source_fd = chase_symlinks_and_open(p->copy_blocks_path, root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
4863 | if (source_fd < 0) | |
4864 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 4865 | |
5c08da58 LP |
4866 | if (fstat(source_fd, &st) < 0) |
4867 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
4868 | ||
4869 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
4870 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
4871 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
4872 | ||
4873 | } else if (p->copy_blocks_auto) { | |
1a037ba2 | 4874 | dev_t devno; |
5c08da58 | 4875 | |
1a037ba2 | 4876 | r = resolve_copy_blocks_auto(p->type_uuid, root, restrict_devno, &devno, &uuid); |
5c08da58 LP |
4877 | if (r < 0) |
4878 | return r; | |
4879 | ||
ca822829 | 4880 | source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
1a037ba2 | 4881 | if (r < 0) |
ca822829 YW |
4882 | return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m", |
4883 | DEVNUM_FORMAT_VAL(devno)); | |
5c08da58 LP |
4884 | |
4885 | if (fstat(source_fd, &st) < 0) | |
4886 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
1a037ba2 | 4887 | } else |
5c08da58 | 4888 | continue; |
757bc2e4 LP |
4889 | |
4890 | if (S_ISDIR(st.st_mode)) { | |
ca822829 YW |
4891 | _cleanup_free_ char *bdev = NULL; |
4892 | dev_t devt; | |
757bc2e4 LP |
4893 | |
4894 | /* If the file is a directory, automatically find the backing block device */ | |
4895 | ||
4896 | if (major(st.st_dev) != 0) | |
ca822829 | 4897 | devt = st.st_dev; |
757bc2e4 | 4898 | else { |
757bc2e4 | 4899 | /* Special support for btrfs */ |
757bc2e4 | 4900 | r = btrfs_get_block_device_fd(source_fd, &devt); |
67f0ac8c | 4901 | if (r == -EUCLEAN) |
5c08da58 | 4902 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 4903 | if (r < 0) |
5c08da58 | 4904 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 | 4905 | } |
757bc2e4 LP |
4906 | |
4907 | safe_close(source_fd); | |
4908 | ||
ca822829 YW |
4909 | source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev); |
4910 | if (r < 0) | |
4911 | return log_error_errno(r, "Failed to open block device backing '%s': %m", opened); | |
757bc2e4 LP |
4912 | |
4913 | if (fstat(source_fd, &st) < 0) | |
4914 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
757bc2e4 LP |
4915 | } |
4916 | ||
4917 | if (S_ISREG(st.st_mode)) | |
4918 | size = st.st_size; | |
4919 | else if (S_ISBLK(st.st_mode)) { | |
4920 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
4921 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
4922 | } else | |
5c08da58 | 4923 | 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 |
4924 | |
4925 | if (size <= 0) | |
5c08da58 | 4926 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 4927 | if (size % 512 != 0) |
5c08da58 | 4928 | 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 |
4929 | |
4930 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
4931 | p->copy_blocks_size = size; | |
5c08da58 LP |
4932 | |
4933 | free_and_replace(p->copy_blocks_path, opened); | |
4934 | ||
4935 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
11749b61 | 4936 | if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) { |
5c08da58 | 4937 | p->new_uuid = uuid; |
11749b61 DDM |
4938 | p->new_uuid_is_set = true; |
4939 | } | |
757bc2e4 LP |
4940 | } |
4941 | ||
4942 | return 0; | |
4943 | } | |
4944 | ||
e594a3b1 LP |
4945 | static int help(void) { |
4946 | _cleanup_free_ char *link = NULL; | |
4947 | int r; | |
4948 | ||
4949 | r = terminal_urlify_man("systemd-repart", "1", &link); | |
4950 | if (r < 0) | |
4951 | return log_oom(); | |
4952 | ||
4953 | printf("%s [OPTIONS...] [DEVICE]\n" | |
4954 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
4955 | " -h --help Show this help\n" | |
4956 | " --version Show package version\n" | |
896e678b LP |
4957 | " --no-pager Do not pipe output into a pager\n" |
4958 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 4959 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
4960 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
4961 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 4962 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 4963 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
4964 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
4965 | " them\n" | |
4966 | " --can-factory-reset Test whether factory reset is defined\n" | |
4967 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 4968 | " --image=PATH Operate relative to image file\n" |
9d252fbb | 4969 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 4970 | " --key-file=PATH Key to use when encrypting partitions\n" |
b456191d DDM |
4971 | " --private-key=PATH Private key to use when generating verity roothash\n" |
4972 | " signatures\n" | |
4973 | " --certificate=PATH PEM certificate to use when generating verity\n" | |
4974 | " roothash signatures\n" | |
889914ef | 4975 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 4976 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 4977 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
02ef97cd LP |
4978 | " --tpm2-public-key=PATH\n" |
4979 | " Enroll signed TPM2 PCR policy against PEM public key\n" | |
4980 | " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n" | |
4981 | " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n" | |
e594a3b1 | 4982 | " --seed=UUID 128bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 4983 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 4984 | " --json=pretty|short|off\n" |
de8231b0 | 4985 | " Generate JSON output\n" |
4cee8333 | 4986 | " --split=BOOL Whether to generate split artifacts\n" |
bc556335 DDM |
4987 | "\nSee the %s for details.\n", |
4988 | program_invocation_short_name, | |
4989 | ansi_highlight(), | |
4990 | ansi_normal(), | |
4991 | link); | |
e594a3b1 LP |
4992 | |
4993 | return 0; | |
4994 | } | |
4995 | ||
4996 | static int parse_argv(int argc, char *argv[]) { | |
4997 | ||
4998 | enum { | |
4999 | ARG_VERSION = 0x100, | |
896e678b LP |
5000 | ARG_NO_PAGER, |
5001 | ARG_NO_LEGEND, | |
e594a3b1 LP |
5002 | ARG_DRY_RUN, |
5003 | ARG_EMPTY, | |
5004 | ARG_DISCARD, | |
5005 | ARG_FACTORY_RESET, | |
5006 | ARG_CAN_FACTORY_RESET, | |
5007 | ARG_ROOT, | |
252d6267 | 5008 | ARG_IMAGE, |
e594a3b1 LP |
5009 | ARG_SEED, |
5010 | ARG_PRETTY, | |
5011 | ARG_DEFINITIONS, | |
a26f4a49 | 5012 | ARG_SIZE, |
a015fbe7 | 5013 | ARG_JSON, |
b9df3536 | 5014 | ARG_KEY_FILE, |
b456191d DDM |
5015 | ARG_PRIVATE_KEY, |
5016 | ARG_CERTIFICATE, | |
889914ef LP |
5017 | ARG_TPM2_DEVICE, |
5018 | ARG_TPM2_PCRS, | |
02ef97cd LP |
5019 | ARG_TPM2_PUBLIC_KEY, |
5020 | ARG_TPM2_PUBLIC_KEY_PCRS, | |
4cee8333 | 5021 | ARG_SPLIT, |
e594a3b1 LP |
5022 | }; |
5023 | ||
5024 | static const struct option options[] = { | |
02ef97cd LP |
5025 | { "help", no_argument, NULL, 'h' }, |
5026 | { "version", no_argument, NULL, ARG_VERSION }, | |
5027 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
5028 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
5029 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, | |
5030 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
5031 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
5032 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
5033 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
5034 | { "root", required_argument, NULL, ARG_ROOT }, | |
5035 | { "image", required_argument, NULL, ARG_IMAGE }, | |
5036 | { "seed", required_argument, NULL, ARG_SEED }, | |
5037 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
5038 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
5039 | { "size", required_argument, NULL, ARG_SIZE }, | |
5040 | { "json", required_argument, NULL, ARG_JSON }, | |
5041 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, | |
b456191d DDM |
5042 | { "private-key", required_argument, NULL, ARG_PRIVATE_KEY }, |
5043 | { "certificate", required_argument, NULL, ARG_CERTIFICATE }, | |
02ef97cd LP |
5044 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
5045 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
5046 | { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY }, | |
5047 | { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS }, | |
4cee8333 | 5048 | { "split", required_argument, NULL, ARG_SPLIT }, |
e594a3b1 LP |
5049 | {} |
5050 | }; | |
5051 | ||
a26f4a49 | 5052 | int c, r, dry_run = -1; |
e594a3b1 LP |
5053 | |
5054 | assert(argc >= 0); | |
5055 | assert(argv); | |
5056 | ||
5057 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
5058 | ||
5059 | switch (c) { | |
5060 | ||
5061 | case 'h': | |
5062 | return help(); | |
5063 | ||
5064 | case ARG_VERSION: | |
5065 | return version(); | |
5066 | ||
896e678b LP |
5067 | case ARG_NO_PAGER: |
5068 | arg_pager_flags |= PAGER_DISABLE; | |
5069 | break; | |
5070 | ||
5071 | case ARG_NO_LEGEND: | |
5072 | arg_legend = false; | |
5073 | break; | |
5074 | ||
e594a3b1 | 5075 | case ARG_DRY_RUN: |
599c7c54 | 5076 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 5077 | if (r < 0) |
599c7c54 | 5078 | return r; |
e594a3b1 LP |
5079 | break; |
5080 | ||
5081 | case ARG_EMPTY: | |
5082 | if (isempty(optarg) || streq(optarg, "refuse")) | |
5083 | arg_empty = EMPTY_REFUSE; | |
5084 | else if (streq(optarg, "allow")) | |
5085 | arg_empty = EMPTY_ALLOW; | |
5086 | else if (streq(optarg, "require")) | |
5087 | arg_empty = EMPTY_REQUIRE; | |
5088 | else if (streq(optarg, "force")) | |
5089 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
5090 | else if (streq(optarg, "create")) { |
5091 | arg_empty = EMPTY_CREATE; | |
5092 | ||
5093 | if (dry_run < 0) | |
5094 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
5095 | * anew. After all we cannot really break anyone's | |
5096 | * partition tables that way. */ | |
5097 | } else | |
e594a3b1 LP |
5098 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5099 | "Failed to parse --empty= parameter: %s", optarg); | |
5100 | break; | |
5101 | ||
5102 | case ARG_DISCARD: | |
599c7c54 | 5103 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 5104 | if (r < 0) |
599c7c54 | 5105 | return r; |
e594a3b1 LP |
5106 | break; |
5107 | ||
5108 | case ARG_FACTORY_RESET: | |
c3470872 | 5109 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 5110 | if (r < 0) |
c3470872 | 5111 | return r; |
e594a3b1 LP |
5112 | arg_factory_reset = r; |
5113 | break; | |
5114 | ||
5115 | case ARG_CAN_FACTORY_RESET: | |
5116 | arg_can_factory_reset = true; | |
5117 | break; | |
5118 | ||
5119 | case ARG_ROOT: | |
252d6267 LP |
5120 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
5121 | if (r < 0) | |
5122 | return r; | |
5123 | break; | |
5124 | ||
5125 | case ARG_IMAGE: | |
5126 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
5127 | if (r < 0) |
5128 | return r; | |
5129 | break; | |
5130 | ||
5131 | case ARG_SEED: | |
5132 | if (isempty(optarg)) { | |
5133 | arg_seed = SD_ID128_NULL; | |
5134 | arg_randomize = false; | |
5135 | } else if (streq(optarg, "random")) | |
5136 | arg_randomize = true; | |
5137 | else { | |
5138 | r = sd_id128_from_string(optarg, &arg_seed); | |
5139 | if (r < 0) | |
5140 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
5141 | ||
5142 | arg_randomize = false; | |
5143 | } | |
5144 | ||
5145 | break; | |
5146 | ||
5147 | case ARG_PRETTY: | |
c3470872 | 5148 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 5149 | if (r < 0) |
c3470872 | 5150 | return r; |
e594a3b1 LP |
5151 | arg_pretty = r; |
5152 | break; | |
5153 | ||
224c853f RP |
5154 | case ARG_DEFINITIONS: { |
5155 | _cleanup_free_ char *path = NULL; | |
5156 | r = parse_path_argument(optarg, false, &path); | |
e594a3b1 LP |
5157 | if (r < 0) |
5158 | return r; | |
224c853f RP |
5159 | if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0) |
5160 | return log_oom(); | |
e594a3b1 | 5161 | break; |
224c853f | 5162 | } |
e594a3b1 | 5163 | |
a26f4a49 LP |
5164 | case ARG_SIZE: { |
5165 | uint64_t parsed, rounded; | |
5166 | ||
170c9823 LP |
5167 | if (streq(optarg, "auto")) { |
5168 | arg_size = UINT64_MAX; | |
5169 | arg_size_auto = true; | |
5170 | break; | |
5171 | } | |
5172 | ||
a26f4a49 LP |
5173 | r = parse_size(optarg, 1024, &parsed); |
5174 | if (r < 0) | |
5175 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
5176 | ||
5177 | rounded = round_up_size(parsed, 4096); | |
5178 | if (rounded == 0) | |
5179 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
5180 | if (rounded == UINT64_MAX) | |
5181 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
5182 | ||
5183 | if (rounded != parsed) | |
e2341b6b DT |
5184 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")", |
5185 | parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded); | |
a26f4a49 LP |
5186 | |
5187 | arg_size = rounded; | |
170c9823 | 5188 | arg_size_auto = false; |
a26f4a49 LP |
5189 | break; |
5190 | } | |
b9df3536 | 5191 | |
a015fbe7 | 5192 | case ARG_JSON: |
b1e8f46c | 5193 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
5194 | if (r <= 0) |
5195 | return r; | |
a015fbe7 TH |
5196 | |
5197 | break; | |
5198 | ||
b9df3536 LP |
5199 | case ARG_KEY_FILE: { |
5200 | _cleanup_(erase_and_freep) char *k = NULL; | |
5201 | size_t n = 0; | |
5202 | ||
8b3c3a49 | 5203 | r = read_full_file_full( |
986311c2 | 5204 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
5205 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
5206 | NULL, | |
5207 | &k, &n); | |
b9df3536 LP |
5208 | if (r < 0) |
5209 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5210 | ||
5211 | erase_and_free(arg_key); | |
5212 | arg_key = TAKE_PTR(k); | |
5213 | arg_key_size = n; | |
5214 | break; | |
5215 | } | |
a26f4a49 | 5216 | |
b456191d DDM |
5217 | case ARG_PRIVATE_KEY: { |
5218 | _cleanup_(erase_and_freep) char *k = NULL; | |
5219 | size_t n = 0; | |
5220 | ||
5221 | r = read_full_file_full( | |
5222 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5223 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, | |
5224 | NULL, | |
5225 | &k, &n); | |
5226 | if (r < 0) | |
5227 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5228 | ||
5229 | EVP_PKEY_free(arg_private_key); | |
5230 | arg_private_key = NULL; | |
5231 | r = parse_private_key(k, n, &arg_private_key); | |
5232 | if (r < 0) | |
5233 | return r; | |
5234 | break; | |
5235 | } | |
5236 | ||
5237 | case ARG_CERTIFICATE: { | |
5238 | _cleanup_free_ char *cert = NULL; | |
5239 | size_t n = 0; | |
5240 | ||
5241 | r = read_full_file_full( | |
5242 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5243 | READ_FULL_FILE_CONNECT_SOCKET, | |
5244 | NULL, | |
5245 | &cert, &n); | |
5246 | if (r < 0) | |
5247 | return log_error_errno(r, "Failed to read certificate file '%s': %m", optarg); | |
5248 | ||
5249 | X509_free(arg_certificate); | |
5250 | arg_certificate = NULL; | |
5251 | r = parse_x509_certificate(cert, n, &arg_certificate); | |
5252 | if (r < 0) | |
5253 | return r; | |
5254 | break; | |
5255 | } | |
5256 | ||
889914ef LP |
5257 | case ARG_TPM2_DEVICE: { |
5258 | _cleanup_free_ char *device = NULL; | |
5259 | ||
5260 | if (streq(optarg, "list")) | |
5261 | return tpm2_list_devices(); | |
5262 | ||
5263 | if (!streq(optarg, "auto")) { | |
5264 | device = strdup(optarg); | |
5265 | if (!device) | |
5266 | return log_oom(); | |
5267 | } | |
5268 | ||
5269 | free(arg_tpm2_device); | |
5270 | arg_tpm2_device = TAKE_PTR(device); | |
5271 | break; | |
5272 | } | |
5273 | ||
222a951f LP |
5274 | case ARG_TPM2_PCRS: |
5275 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_pcr_mask); | |
889914ef LP |
5276 | if (r < 0) |
5277 | return r; | |
5278 | ||
889914ef | 5279 | break; |
889914ef | 5280 | |
02ef97cd LP |
5281 | case ARG_TPM2_PUBLIC_KEY: |
5282 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key); | |
5283 | if (r < 0) | |
5284 | return r; | |
5285 | ||
5286 | break; | |
5287 | ||
5288 | case ARG_TPM2_PUBLIC_KEY_PCRS: | |
5289 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_public_key_pcr_mask); | |
5290 | if (r < 0) | |
5291 | return r; | |
5292 | ||
5293 | break; | |
5294 | ||
4cee8333 DDM |
5295 | case ARG_SPLIT: |
5296 | r = parse_boolean_argument("--split=", optarg, NULL); | |
5297 | if (r < 0) | |
5298 | return r; | |
5299 | ||
5300 | arg_split = r; | |
5301 | break; | |
5302 | ||
e594a3b1 LP |
5303 | case '?': |
5304 | return -EINVAL; | |
5305 | ||
5306 | default: | |
04499a70 | 5307 | assert_not_reached(); |
e594a3b1 LP |
5308 | } |
5309 | ||
5310 | if (argc - optind > 1) | |
5311 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5312 | "Expected at most one argument, the path to the block device."); | |
5313 | ||
a26f4a49 | 5314 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 5315 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 5316 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
5317 | |
5318 | if (arg_can_factory_reset) | |
a26f4a49 LP |
5319 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
5320 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
5321 | * open things strictly read-only. */ | |
5322 | else if (dry_run >= 0) | |
5323 | arg_dry_run = dry_run; | |
5324 | ||
170c9823 | 5325 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
5326 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5327 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 5328 | |
252d6267 LP |
5329 | if (arg_image && arg_root) |
5330 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
5331 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
5332 | |
5333 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
5334 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
5335 | * is vendor-supplied but the root fs formatted on first boot. */ | |
5336 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
5337 | if (r <= 0) { | |
5338 | if (r < 0 && r != -ENOENT) | |
5339 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
5340 | ||
5341 | arg_root = strdup("/sysroot"); | |
5342 | } else | |
5343 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
5344 | if (!arg_root) |
5345 | return log_oom(); | |
5346 | } | |
5347 | ||
e594a3b1 | 5348 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 5349 | |
252d6267 | 5350 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
5351 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5352 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
5353 | ||
4cee8333 DDM |
5354 | if (arg_split && !arg_node) |
5355 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5356 | "A path to a loopback file must be specified when --split is used."); | |
5357 | ||
889914ef LP |
5358 | if (arg_tpm2_pcr_mask == UINT32_MAX) |
5359 | arg_tpm2_pcr_mask = TPM2_PCR_MASK_DEFAULT; | |
02ef97cd LP |
5360 | if (arg_tpm2_public_key_pcr_mask == UINT32_MAX) |
5361 | arg_tpm2_public_key_pcr_mask = UINT32_C(1) << TPM_PCR_INDEX_KERNEL_IMAGE; | |
889914ef | 5362 | |
a26d463d DDM |
5363 | if (arg_pretty < 0 && isatty(STDOUT_FILENO)) |
5364 | arg_pretty = true; | |
5365 | ||
e594a3b1 LP |
5366 | return 1; |
5367 | } | |
5368 | ||
5369 | static int parse_proc_cmdline_factory_reset(void) { | |
5370 | bool b; | |
5371 | int r; | |
5372 | ||
5373 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
5374 | return 0; | |
5375 | ||
5376 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
5377 | return 0; | |
5378 | ||
5379 | r = proc_cmdline_get_bool("systemd.factory_reset", &b); | |
5380 | if (r < 0) | |
5381 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
5382 | if (r > 0) { | |
5383 | arg_factory_reset = b; | |
5384 | ||
5385 | if (b) | |
5386 | log_notice("Honouring factory reset requested via kernel command line."); | |
5387 | } | |
5388 | ||
5389 | return 0; | |
5390 | } | |
5391 | ||
5392 | static int parse_efi_variable_factory_reset(void) { | |
5393 | _cleanup_free_ char *value = NULL; | |
5394 | int r; | |
5395 | ||
5396 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
5397 | return 0; | |
5398 | ||
5399 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
5400 | return 0; | |
5401 | ||
e6f055cb | 5402 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
e594a3b1 LP |
5403 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
5404 | return 0; | |
5405 | if (r < 0) | |
5406 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); | |
5407 | ||
5408 | r = parse_boolean(value); | |
5409 | if (r < 0) | |
5410 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
5411 | ||
5412 | arg_factory_reset = r; | |
5413 | if (r) | |
111a3aae | 5414 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
5415 | |
5416 | return 0; | |
5417 | } | |
5418 | ||
5419 | static int remove_efi_variable_factory_reset(void) { | |
5420 | int r; | |
5421 | ||
e6f055cb | 5422 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
e594a3b1 LP |
5423 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
5424 | return 0; | |
5425 | if (r < 0) | |
5426 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); | |
5427 | ||
5428 | log_info("Successfully unset EFI variable FactoryReset."); | |
5429 | return 0; | |
5430 | } | |
5431 | ||
252d6267 LP |
5432 | static int acquire_root_devno( |
5433 | const char *p, | |
5434 | const char *root, | |
5435 | int mode, | |
5436 | char **ret, | |
5437 | int *ret_fd) { | |
5438 | ||
5439 | _cleanup_free_ char *found_path = NULL; | |
5440 | dev_t devno, fd_devno = MODE_INVALID; | |
e594a3b1 LP |
5441 | _cleanup_close_ int fd = -1; |
5442 | struct stat st; | |
e594a3b1 LP |
5443 | int r; |
5444 | ||
a26f4a49 LP |
5445 | assert(p); |
5446 | assert(ret); | |
5447 | assert(ret_fd); | |
5448 | ||
252d6267 | 5449 | fd = chase_symlinks_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 5450 | if (fd < 0) |
252d6267 | 5451 | return fd; |
e594a3b1 LP |
5452 | |
5453 | if (fstat(fd, &st) < 0) | |
5454 | return -errno; | |
5455 | ||
5456 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 5457 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 5458 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
5459 | return 0; |
5460 | } | |
5461 | ||
252d6267 LP |
5462 | if (S_ISBLK(st.st_mode)) { |
5463 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 5464 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
5465 | if (root) |
5466 | return -EPERM; | |
5467 | ||
a26f4a49 | 5468 | fd_devno = devno = st.st_rdev; |
252d6267 | 5469 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
5470 | |
5471 | devno = st.st_dev; | |
a26f4a49 | 5472 | if (major(devno) == 0) { |
e594a3b1 LP |
5473 | r = btrfs_get_block_device_fd(fd, &devno); |
5474 | if (r == -ENOTTY) /* not btrfs */ | |
5475 | return -ENODEV; | |
5476 | if (r < 0) | |
5477 | return r; | |
5478 | } | |
e594a3b1 LP |
5479 | } else |
5480 | return -ENOTBLK; | |
5481 | ||
5482 | /* From dm-crypt to backing partition */ | |
5483 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
5484 | if (r == -ENOENT) |
5485 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
5486 | else if (r < 0) | |
e594a3b1 LP |
5487 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
5488 | ||
5489 | /* From partition to whole disk containing it */ | |
5490 | r = block_get_whole_disk(devno, &devno); | |
5491 | if (r < 0) | |
162392b7 | 5492 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 5493 | |
4fe46c34 | 5494 | r = devname_from_devnum(S_IFBLK, devno, ret); |
a26f4a49 LP |
5495 | if (r < 0) |
5496 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
5497 | ||
6bbae9f8 | 5498 | /* Only if we still look at the same block device we can reuse the fd. Otherwise return an |
a26f4a49 | 5499 | * invalidated fd. */ |
f5fbe71d | 5500 | *ret_fd = fd_devno != MODE_INVALID && fd_devno == devno ? TAKE_FD(fd) : -1; |
a26f4a49 | 5501 | return 0; |
e594a3b1 LP |
5502 | } |
5503 | ||
a26f4a49 | 5504 | static int find_root(char **ret, int *ret_fd) { |
54632d2e | 5505 | _cleanup_free_ char *device = NULL; |
5980d463 | 5506 | int r; |
e594a3b1 | 5507 | |
a26f4a49 LP |
5508 | assert(ret); |
5509 | assert(ret_fd); | |
5510 | ||
e594a3b1 | 5511 | if (arg_node) { |
a26f4a49 LP |
5512 | if (arg_empty == EMPTY_CREATE) { |
5513 | _cleanup_close_ int fd = -1; | |
5514 | _cleanup_free_ char *s = NULL; | |
5515 | ||
5516 | s = strdup(arg_node); | |
5517 | if (!s) | |
5518 | return log_oom(); | |
5519 | ||
5332d7c6 | 5520 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
5521 | if (fd < 0) |
5522 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
5523 | ||
5524 | *ret = TAKE_PTR(s); | |
5525 | *ret_fd = TAKE_FD(fd); | |
5526 | return 0; | |
5527 | } | |
5528 | ||
252d6267 LP |
5529 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
5530 | * we'll take it relative to the host, not the image */ | |
5531 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, ret, ret_fd); | |
67f0ac8c LP |
5532 | if (r == -EUCLEAN) |
5533 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 5534 | if (r < 0) |
aa2a74ad | 5535 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
5536 | |
5537 | return 0; | |
5538 | } | |
5539 | ||
a26f4a49 LP |
5540 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
5541 | ||
54632d2e KK |
5542 | /* If the root mount has been replaced by some form of volatile file system (overlayfs), the |
5543 | * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that | |
5544 | * here. */ | |
5545 | r = readlink_malloc("/run/systemd/volatile-root", &device); | |
5546 | if (r == -ENOENT) { /* volatile-root not found */ | |
5547 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The | |
5548 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
5549 | * (think: volatile setups) */ | |
e594a3b1 | 5550 | |
54632d2e | 5551 | FOREACH_STRING(p, "/", "/usr") { |
e594a3b1 | 5552 | |
54632d2e KK |
5553 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, ret, ret_fd); |
5554 | if (r < 0) { | |
5555 | if (r == -EUCLEAN) | |
5556 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
5557 | if (r != -ENODEV) | |
5558 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
5559 | } else | |
5560 | return 0; | |
5561 | } | |
5562 | } else if (r < 0) | |
5563 | return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m"); | |
5564 | else { | |
5565 | r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, ret, ret_fd); | |
5566 | if (r == -EUCLEAN) | |
5567 | return btrfs_log_dev_root(LOG_ERR, r, device); | |
5568 | if (r < 0) | |
5569 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device); | |
5570 | ||
5571 | return 0; | |
e594a3b1 LP |
5572 | } |
5573 | ||
5574 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
5575 | } | |
5576 | ||
f9b3afae | 5577 | static int resize_pt(int fd) { |
f9b3afae LP |
5578 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
5579 | int r; | |
5580 | ||
5581 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
5582 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
5583 | * immediately write it again, with no changes. */ | |
5584 | ||
5585 | c = fdisk_new_context(); | |
5586 | if (!c) | |
5587 | return log_oom(); | |
5588 | ||
ddb6eeaf | 5589 | r = fdisk_assign_device(c, FORMAT_PROC_FD_PATH(fd), 0); |
f9b3afae | 5590 | if (r < 0) |
ddb6eeaf | 5591 | return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
5592 | |
5593 | r = fdisk_has_label(c); | |
5594 | if (r < 0) | |
ddb6eeaf | 5595 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
5596 | if (r == 0) { |
5597 | log_debug("Not resizing partition table, as there currently is none."); | |
5598 | return 0; | |
5599 | } | |
5600 | ||
5601 | r = fdisk_write_disklabel(c); | |
5602 | if (r < 0) | |
5603 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
5604 | ||
5605 | log_info("Resized partition table."); | |
5606 | return 1; | |
5607 | } | |
5608 | ||
252d6267 LP |
5609 | static int resize_backing_fd( |
5610 | const char *node, /* The primary way we access the disk image to operate on */ | |
5611 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
5612 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
5613 | LoopDevice *loop_device) { | |
5614 | ||
a26f4a49 | 5615 | _cleanup_close_ int writable_fd = -1; |
252d6267 | 5616 | uint64_t current_size; |
a26f4a49 LP |
5617 | struct stat st; |
5618 | int r; | |
5619 | ||
5620 | assert(node); | |
5621 | assert(fd); | |
5622 | ||
5623 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
5624 | return 0; | |
5625 | ||
5626 | if (*fd < 0) { | |
5627 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
5628 | * keep a reference to the file we can pass around. */ | |
5629 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
5630 | if (*fd < 0) | |
5631 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
5632 | } | |
5633 | ||
5634 | if (fstat(*fd, &st) < 0) | |
5635 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
5636 | ||
252d6267 LP |
5637 | if (S_ISBLK(st.st_mode)) { |
5638 | if (!backing_file) | |
5639 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
5640 | ||
5641 | assert(loop_device); | |
a26f4a49 | 5642 | |
252d6267 LP |
5643 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
5644 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
5645 | } else { | |
5646 | r = stat_verify_regular(&st); | |
5647 | if (r < 0) | |
5648 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
5649 | ||
5650 | assert(!backing_file); | |
5651 | assert(!loop_device); | |
5652 | current_size = st.st_size; | |
5653 | } | |
5654 | ||
252d6267 | 5655 | if (current_size >= arg_size) { |
2b59bf51 ZJS |
5656 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", |
5657 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 LP |
5658 | return 0; |
5659 | } | |
5660 | ||
252d6267 LP |
5661 | if (S_ISBLK(st.st_mode)) { |
5662 | assert(backing_file); | |
5663 | ||
5664 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
5665 | * backing file, hence let's do that. */ | |
5666 | ||
5667 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
5668 | if (writable_fd < 0) | |
5669 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
5670 | ||
5671 | if (fstat(writable_fd, &st) < 0) | |
5672 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
5673 | ||
5674 | r = stat_verify_regular(&st); | |
5675 | if (r < 0) | |
5676 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
5677 | ||
5678 | if ((uint64_t) st.st_size != current_size) | |
5679 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2b59bf51 ZJS |
5680 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", |
5681 | node, backing_file); | |
252d6267 LP |
5682 | } else { |
5683 | assert(S_ISREG(st.st_mode)); | |
5684 | assert(!backing_file); | |
a26f4a49 | 5685 | |
252d6267 LP |
5686 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
5687 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
5688 | * as fdisk can't accept it anyway. */ | |
5689 | ||
5690 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
5691 | if (writable_fd < 0) | |
5692 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
5693 | } | |
a26f4a49 LP |
5694 | |
5695 | if (!arg_discard) { | |
5696 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
5697 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
5698 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
2b59bf51 | 5699 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 LP |
5700 | |
5701 | /* Fallback to truncation, if fallocate() is not supported. */ | |
5702 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
5703 | } else { | |
252d6267 | 5704 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 5705 | log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node); |
a26f4a49 | 5706 | else |
2b59bf51 ZJS |
5707 | log_info("File '%s' grown from %s to %s by allocation.", |
5708 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 | 5709 | |
252d6267 | 5710 | goto done; |
a26f4a49 LP |
5711 | } |
5712 | } | |
5713 | ||
5714 | if (ftruncate(writable_fd, arg_size) < 0) | |
5715 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
2b59bf51 | 5716 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 | 5717 | |
252d6267 | 5718 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 5719 | log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size)); |
252d6267 | 5720 | else |
2b59bf51 ZJS |
5721 | log_info("File '%s' grown from %s to %s by truncation.", |
5722 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
252d6267 LP |
5723 | |
5724 | done: | |
f9b3afae LP |
5725 | r = resize_pt(writable_fd); |
5726 | if (r < 0) | |
5727 | return r; | |
5728 | ||
252d6267 LP |
5729 | if (loop_device) { |
5730 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
5731 | if (r < 0) | |
5732 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
5733 | } | |
a26f4a49 LP |
5734 | |
5735 | return 1; | |
5736 | } | |
5737 | ||
170c9823 | 5738 | static int determine_auto_size(Context *c) { |
994b3031 | 5739 | uint64_t sum; |
170c9823 | 5740 | |
ac33e147 | 5741 | assert(c); |
170c9823 | 5742 | |
994b3031 LP |
5743 | sum = round_up_size(GPT_METADATA_SIZE, 4096); |
5744 | ||
170c9823 LP |
5745 | LIST_FOREACH(partitions, p, c->partitions) { |
5746 | uint64_t m; | |
5747 | ||
5748 | if (p->dropped) | |
5749 | continue; | |
5750 | ||
994b3031 | 5751 | m = partition_min_size_with_padding(c, p); |
170c9823 LP |
5752 | if (m > UINT64_MAX - sum) |
5753 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
5754 | ||
5755 | sum += m; | |
5756 | } | |
5757 | ||
2b59bf51 ZJS |
5758 | if (c->total != UINT64_MAX) |
5759 | /* Image already allocated? Then show its size. */ | |
5760 | log_info("Automatically determined minimal disk image size as %s, current image size is %s.", | |
5761 | FORMAT_BYTES(sum), FORMAT_BYTES(c->total)); | |
5762 | else | |
5763 | /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */ | |
5764 | log_info("Automatically determined minimal disk image size as %s.", | |
5765 | FORMAT_BYTES(sum)); | |
170c9823 LP |
5766 | |
5767 | arg_size = sum; | |
5768 | return 0; | |
5769 | } | |
5770 | ||
e594a3b1 | 5771 | static int run(int argc, char *argv[]) { |
252d6267 | 5772 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
252d6267 | 5773 | _cleanup_(umount_and_rmdir_and_freep) char *mounted_dir = NULL; |
e594a3b1 LP |
5774 | _cleanup_(context_freep) Context* context = NULL; |
5775 | _cleanup_free_ char *node = NULL; | |
a26f4a49 | 5776 | _cleanup_close_ int backing_fd = -1; |
252d6267 | 5777 | bool from_scratch, node_is_our_loop = false; |
e594a3b1 LP |
5778 | int r; |
5779 | ||
5780 | log_show_color(true); | |
5781 | log_parse_environment(); | |
5782 | log_open(); | |
5783 | ||
e594a3b1 LP |
5784 | r = parse_argv(argc, argv); |
5785 | if (r <= 0) | |
5786 | return r; | |
5787 | ||
5788 | r = parse_proc_cmdline_factory_reset(); | |
5789 | if (r < 0) | |
5790 | return r; | |
5791 | ||
5792 | r = parse_efi_variable_factory_reset(); | |
5793 | if (r < 0) | |
5794 | return r; | |
5795 | ||
30f19400 LP |
5796 | #if HAVE_LIBCRYPTSETUP |
5797 | cryptsetup_enable_logging(NULL); | |
5798 | #endif | |
5799 | ||
252d6267 LP |
5800 | if (arg_image) { |
5801 | assert(!arg_root); | |
5802 | ||
5803 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
5804 | * systems */ | |
5805 | r = mount_image_privately_interactively( | |
5806 | arg_image, | |
5807 | DISSECT_IMAGE_MOUNT_READ_ONLY | | |
5808 | (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) */ | |
5809 | DISSECT_IMAGE_GPT_ONLY | | |
5810 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
5811 | DISSECT_IMAGE_USR_NO_ROOT | | |
5812 | DISSECT_IMAGE_REQUIRE_ROOT, | |
5813 | &mounted_dir, | |
e330f97a | 5814 | &loop_device); |
252d6267 LP |
5815 | if (r < 0) |
5816 | return r; | |
5817 | ||
5818 | arg_root = strdup(mounted_dir); | |
5819 | if (!arg_root) | |
5820 | return log_oom(); | |
5821 | ||
5822 | if (!arg_node) { | |
5823 | arg_node = strdup(loop_device->node); | |
5824 | if (!arg_node) | |
5825 | return log_oom(); | |
5826 | ||
3d62af7d | 5827 | /* Remember that the device we are about to manipulate is actually the one we |
252d6267 LP |
5828 | * allocated here, and thus to increase its backing file we know what to do */ |
5829 | node_is_our_loop = true; | |
5830 | } | |
5831 | } | |
5832 | ||
e594a3b1 LP |
5833 | context = context_new(arg_seed); |
5834 | if (!context) | |
5835 | return log_oom(); | |
5836 | ||
224c853f RP |
5837 | strv_uniq(arg_definitions); |
5838 | ||
e594a3b1 LP |
5839 | r = context_read_definitions(context, arg_definitions, arg_root); |
5840 | if (r < 0) | |
5841 | return r; | |
5842 | ||
a26f4a49 | 5843 | if (context->n_partitions <= 0 && arg_empty == EMPTY_REFUSE) { |
e2d65cd2 | 5844 | log_info("Didn't find any partition definition files, nothing to do."); |
0ae5ffe0 | 5845 | return 0; |
e2d65cd2 | 5846 | } |
0ae5ffe0 | 5847 | |
a26f4a49 | 5848 | r = find_root(&node, &backing_fd); |
0ae5ffe0 YW |
5849 | if (r < 0) |
5850 | return r; | |
5851 | ||
a26f4a49 | 5852 | if (arg_size != UINT64_MAX) { |
252d6267 LP |
5853 | r = resize_backing_fd( |
5854 | node, | |
5855 | &backing_fd, | |
5856 | node_is_our_loop ? arg_image : NULL, | |
5857 | node_is_our_loop ? loop_device : NULL); | |
a26f4a49 LP |
5858 | if (r < 0) |
5859 | return r; | |
5860 | } | |
5861 | ||
5862 | r = context_load_partition_table(context, node, &backing_fd); | |
e594a3b1 LP |
5863 | if (r == -EHWPOISON) |
5864 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
5865 | * really an error when called at boot. */ | |
5866 | if (r < 0) | |
5867 | return r; | |
5868 | from_scratch = r > 0; /* Starting from scratch */ | |
5869 | ||
5870 | if (arg_can_factory_reset) { | |
5871 | r = context_can_factory_reset(context); | |
5872 | if (r < 0) | |
5873 | return r; | |
5874 | if (r == 0) | |
5875 | return EXIT_FAILURE; | |
5876 | ||
5877 | return 0; | |
5878 | } | |
5879 | ||
5880 | r = context_factory_reset(context, from_scratch); | |
5881 | if (r < 0) | |
5882 | return r; | |
5883 | if (r > 0) { | |
5884 | /* We actually did a factory reset! */ | |
5885 | r = remove_efi_variable_factory_reset(); | |
5886 | if (r < 0) | |
5887 | return r; | |
5888 | ||
5889 | /* Reload the reduced partition table */ | |
5890 | context_unload_partition_table(context); | |
a26f4a49 | 5891 | r = context_load_partition_table(context, node, &backing_fd); |
e594a3b1 LP |
5892 | if (r < 0) |
5893 | return r; | |
5894 | } | |
5895 | ||
5896 | #if 0 | |
5897 | (void) context_dump_partitions(context, node); | |
5898 | putchar('\n'); | |
5899 | #endif | |
5900 | ||
5901 | r = context_read_seed(context, arg_root); | |
5902 | if (r < 0) | |
5903 | return r; | |
5904 | ||
757bc2e4 | 5905 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
5906 | r = context_open_copy_block_paths( |
5907 | context, | |
5908 | arg_root, | |
7802194a | 5909 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
5910 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
5911 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
5912 | if (r < 0) |
5913 | return r; | |
5914 | ||
170c9823 LP |
5915 | if (arg_size_auto) { |
5916 | r = determine_auto_size(context); | |
5917 | if (r < 0) | |
5918 | return r; | |
5919 | ||
5920 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
5921 | context_unload_partition_table(context); | |
5922 | ||
ac33e147 | 5923 | assert(arg_size != UINT64_MAX); |
252d6267 LP |
5924 | r = resize_backing_fd( |
5925 | node, | |
5926 | &backing_fd, | |
5927 | node_is_our_loop ? arg_image : NULL, | |
5928 | node_is_our_loop ? loop_device : NULL); | |
170c9823 LP |
5929 | if (r < 0) |
5930 | return r; | |
5931 | ||
5932 | r = context_load_partition_table(context, node, &backing_fd); | |
5933 | if (r < 0) | |
5934 | return r; | |
5935 | } | |
5936 | ||
e594a3b1 LP |
5937 | /* First try to fit new partitions in, dropping by priority until it fits */ |
5938 | for (;;) { | |
14a4c4ed LP |
5939 | uint64_t largest_free_area; |
5940 | ||
5941 | if (context_allocate_partitions(context, &largest_free_area)) | |
e594a3b1 LP |
5942 | break; /* Success! */ |
5943 | ||
9ccceb9d | 5944 | if (!context_drop_or_foreignize_one_priority(context)) { |
d17db7b2 | 5945 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), |
14a4c4ed | 5946 | "Can't fit requested partitions into available free space (%s), refusing.", |
2b59bf51 | 5947 | FORMAT_BYTES(largest_free_area)); |
d17db7b2 LP |
5948 | determine_auto_size(context); |
5949 | return r; | |
5950 | } | |
e594a3b1 LP |
5951 | } |
5952 | ||
5953 | /* Now assign free space according to the weight logic */ | |
5954 | r = context_grow_partitions(context); | |
5955 | if (r < 0) | |
5956 | return r; | |
5957 | ||
0b7f574f | 5958 | /* Now calculate where each new partition gets placed */ |
e594a3b1 LP |
5959 | context_place_partitions(context); |
5960 | ||
5961 | /* Make sure each partition has a unique UUID and unique label */ | |
5962 | r = context_acquire_partition_uuids_and_labels(context); | |
5963 | if (r < 0) | |
5964 | return r; | |
5965 | ||
b5b7879a | 5966 | (void) context_dump(context, node, /*late=*/ false); |
a26d463d | 5967 | |
e594a3b1 LP |
5968 | r = context_write_partition_table(context, node, from_scratch); |
5969 | if (r < 0) | |
5970 | return r; | |
5971 | ||
4cee8333 DDM |
5972 | r = context_split(context); |
5973 | if (r < 0) | |
5974 | return r; | |
5975 | ||
b5b7879a DDM |
5976 | (void) context_dump(context, node, /*late=*/ true); |
5977 | ||
e594a3b1 LP |
5978 | return 0; |
5979 | } | |
5980 | ||
5981 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |