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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" |
c0fad2d9 | 54 | #include "nulstr-util.h" |
b456191d | 55 | #include "openssl-util.h" |
614b022c | 56 | #include "parse-argument.h" |
c3eaba2d | 57 | #include "parse-helpers.h" |
e594a3b1 LP |
58 | #include "pretty-print.h" |
59 | #include "proc-cmdline.h" | |
8a794850 | 60 | #include "process-util.h" |
b9df3536 | 61 | #include "random-util.h" |
170c9823 | 62 | #include "resize-fs.h" |
95bfd3cd | 63 | #include "rm-rf.h" |
e594a3b1 | 64 | #include "sort-util.h" |
e031166e | 65 | #include "specifier.h" |
e594a3b1 | 66 | #include "stdio-util.h" |
889914ef | 67 | #include "string-table.h" |
e594a3b1 LP |
68 | #include "string-util.h" |
69 | #include "strv.h" | |
bf819d3a | 70 | #include "sync-util.h" |
95bfd3cd | 71 | #include "tmpfile-util.h" |
e594a3b1 | 72 | #include "terminal-util.h" |
02ef97cd | 73 | #include "tpm-pcr.h" |
889914ef | 74 | #include "tpm2-util.h" |
8a794850 | 75 | #include "user-util.h" |
e594a3b1 LP |
76 | #include "utf8.h" |
77 | ||
fb08381c | 78 | /* If not configured otherwise use a minimal partition size of 10M */ |
b262cbe8 | 79 | #define DEFAULT_MIN_SIZE (10ULL*1024ULL*1024ULL) |
fb08381c LP |
80 | |
81 | /* Hard lower limit for new partition sizes */ | |
b262cbe8 | 82 | #define HARD_MIN_SIZE 4096ULL |
fb08381c | 83 | |
b456191d | 84 | /* We know up front we're never going to put more than this in a verity sig partition. */ |
b262cbe8 | 85 | #define VERITY_SIG_SIZE (HARD_MIN_SIZE*4ULL) |
b456191d | 86 | |
69e3234d | 87 | /* libfdisk takes off slightly more than 1M of the disk size when creating a GPT disk label */ |
b262cbe8 | 88 | #define GPT_METADATA_SIZE (1044ULL*1024ULL) |
170c9823 LP |
89 | |
90 | /* LUKS2 takes off 16M of the partition size with its metadata by default */ | |
b262cbe8 | 91 | #define LUKS2_METADATA_SIZE (16ULL*1024ULL*1024ULL) |
170c9823 | 92 | |
48a09a8f DDM |
93 | /* To do LUKS2 offline encryption, we need to keep some extra free space at the end of the partition. */ |
94 | #define LUKS2_METADATA_KEEP_FREE (LUKS2_METADATA_SIZE*2ULL) | |
95 | ||
98e0456e DDM |
96 | /* LUKS2 volume key size. */ |
97 | #define VOLUME_KEY_SIZE (512ULL/8ULL) | |
98 | ||
e594a3b1 LP |
99 | /* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks |
100 | * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B | |
101 | * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll | |
102 | * waste 3K per partition, which is probably fine. */ | |
103 | ||
104 | static enum { | |
105 | EMPTY_REFUSE, /* refuse empty disks, never create a partition table */ | |
106 | EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */ | |
107 | EMPTY_REQUIRE, /* require an empty disk, create a partition table */ | |
108 | EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */ | |
a26f4a49 | 109 | EMPTY_CREATE, /* create disk as loopback file, create a partition table always */ |
e594a3b1 LP |
110 | } arg_empty = EMPTY_REFUSE; |
111 | ||
81d1098b DDM |
112 | typedef enum { |
113 | FILTER_PARTITIONS_NONE, | |
114 | FILTER_PARTITIONS_EXCLUDE, | |
115 | FILTER_PARTITIONS_INCLUDE, | |
116 | _FILTER_PARTITIONS_MAX, | |
117 | _FILTER_PARTITIONS_INVALID = -EINVAL, | |
118 | } FilterPartitionsType; | |
119 | ||
e594a3b1 LP |
120 | static bool arg_dry_run = true; |
121 | static const char *arg_node = NULL; | |
122 | static char *arg_root = NULL; | |
252d6267 | 123 | static char *arg_image = NULL; |
224c853f | 124 | static char **arg_definitions = NULL; |
e594a3b1 LP |
125 | static bool arg_discard = true; |
126 | static bool arg_can_factory_reset = false; | |
127 | static int arg_factory_reset = -1; | |
128 | static sd_id128_t arg_seed = SD_ID128_NULL; | |
129 | static bool arg_randomize = false; | |
130 | static int arg_pretty = -1; | |
a26f4a49 | 131 | static uint64_t arg_size = UINT64_MAX; |
170c9823 | 132 | static bool arg_size_auto = false; |
6a01ea4a | 133 | static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; |
896e678b LP |
134 | static PagerFlags arg_pager_flags = 0; |
135 | static bool arg_legend = true; | |
b9df3536 LP |
136 | static void *arg_key = NULL; |
137 | static size_t arg_key_size = 0; | |
b456191d DDM |
138 | static EVP_PKEY *arg_private_key = NULL; |
139 | static X509 *arg_certificate = NULL; | |
889914ef LP |
140 | static char *arg_tpm2_device = NULL; |
141 | static uint32_t arg_tpm2_pcr_mask = UINT32_MAX; | |
02ef97cd LP |
142 | static char *arg_tpm2_public_key = NULL; |
143 | static uint32_t arg_tpm2_public_key_pcr_mask = UINT32_MAX; | |
4cee8333 | 144 | static bool arg_split = false; |
81d1098b DDM |
145 | static sd_id128_t *arg_filter_partitions = NULL; |
146 | static size_t arg_filter_partitions_size = 0; | |
147 | static FilterPartitionsType arg_filter_partitions_type = FILTER_PARTITIONS_NONE; | |
e594a3b1 LP |
148 | |
149 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 150 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
224c853f | 151 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep); |
b9df3536 | 152 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
b456191d DDM |
153 | STATIC_DESTRUCTOR_REGISTER(arg_private_key, EVP_PKEY_freep); |
154 | STATIC_DESTRUCTOR_REGISTER(arg_certificate, X509_freep); | |
889914ef | 155 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
02ef97cd | 156 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep); |
81d1098b | 157 | STATIC_DESTRUCTOR_REGISTER(arg_filter_partitions, freep); |
e594a3b1 LP |
158 | |
159 | typedef struct Partition Partition; | |
160 | typedef struct FreeArea FreeArea; | |
161 | typedef struct Context Context; | |
162 | ||
889914ef LP |
163 | typedef enum EncryptMode { |
164 | ENCRYPT_OFF, | |
165 | ENCRYPT_KEY_FILE, | |
166 | ENCRYPT_TPM2, | |
167 | ENCRYPT_KEY_FILE_TPM2, | |
168 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 169 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
170 | } EncryptMode; |
171 | ||
b5b7879a DDM |
172 | typedef enum VerityMode { |
173 | VERITY_OFF, | |
174 | VERITY_DATA, | |
175 | VERITY_HASH, | |
b456191d | 176 | VERITY_SIG, |
b5b7879a DDM |
177 | _VERITY_MODE_MAX, |
178 | _VERITY_MODE_INVALID = -EINVAL, | |
179 | } VerityMode; | |
180 | ||
e594a3b1 LP |
181 | struct Partition { |
182 | char *definition_path; | |
39fc0174 | 183 | char **drop_in_files; |
e594a3b1 | 184 | |
22e932f4 | 185 | GptPartitionType type; |
e594a3b1 | 186 | sd_id128_t current_uuid, new_uuid; |
11749b61 | 187 | bool new_uuid_is_set; |
e594a3b1 | 188 | char *current_label, *new_label; |
8bbbdfd7 | 189 | sd_id128_t fs_uuid; |
e594a3b1 LP |
190 | |
191 | bool dropped; | |
192 | bool factory_reset; | |
193 | int32_t priority; | |
194 | ||
195 | uint32_t weight, padding_weight; | |
196 | ||
197 | uint64_t current_size, new_size; | |
198 | uint64_t size_min, size_max; | |
199 | ||
200 | uint64_t current_padding, new_padding; | |
201 | uint64_t padding_min, padding_max; | |
202 | ||
203 | uint64_t partno; | |
204 | uint64_t offset; | |
205 | ||
206 | struct fdisk_partition *current_partition; | |
207 | struct fdisk_partition *new_partition; | |
208 | FreeArea *padding_area; | |
209 | FreeArea *allocated_to_area; | |
210 | ||
757bc2e4 | 211 | char *copy_blocks_path; |
5c08da58 | 212 | bool copy_blocks_auto; |
585c5c75 | 213 | const char *copy_blocks_root; |
757bc2e4 LP |
214 | int copy_blocks_fd; |
215 | uint64_t copy_blocks_size; | |
216 | ||
53171c04 | 217 | char *format; |
8a794850 | 218 | char **copy_files; |
d83d8048 | 219 | char **make_directories; |
889914ef | 220 | EncryptMode encrypt; |
b5b7879a DDM |
221 | VerityMode verity; |
222 | char *verity_match_key; | |
c4a87b76 | 223 | bool minimize; |
53171c04 | 224 | |
e73309c5 | 225 | uint64_t gpt_flags; |
ff0771bf | 226 | int no_auto; |
e73309c5 | 227 | int read_only; |
1c41c1dc | 228 | int growfs; |
e73309c5 | 229 | |
b5b7879a DDM |
230 | uint8_t *roothash; |
231 | size_t roothash_size; | |
232 | ||
4cee8333 DDM |
233 | char *split_name_format; |
234 | char *split_name_resolved; | |
235 | ||
b5b7879a DDM |
236 | Partition *siblings[_VERITY_MODE_MAX]; |
237 | ||
e594a3b1 LP |
238 | LIST_FIELDS(Partition, partitions); |
239 | }; | |
240 | ||
241 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
242 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
243 | ||
244 | struct FreeArea { | |
245 | Partition *after; | |
246 | uint64_t size; | |
247 | uint64_t allocated; | |
248 | }; | |
249 | ||
250 | struct Context { | |
251 | LIST_HEAD(Partition, partitions); | |
252 | size_t n_partitions; | |
253 | ||
254 | FreeArea **free_areas; | |
319a4f4b | 255 | size_t n_free_areas; |
e594a3b1 LP |
256 | |
257 | uint64_t start, end, total; | |
258 | ||
259 | struct fdisk_context *fdisk_context; | |
994b3031 LP |
260 | uint64_t sector_size; |
261 | uint64_t grain_size; | |
e594a3b1 LP |
262 | |
263 | sd_id128_t seed; | |
264 | }; | |
265 | ||
889914ef LP |
266 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
267 | [ENCRYPT_OFF] = "off", | |
268 | [ENCRYPT_KEY_FILE] = "key-file", | |
269 | [ENCRYPT_TPM2] = "tpm2", | |
270 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
271 | }; | |
272 | ||
b5b7879a DDM |
273 | static const char *verity_mode_table[_VERITY_MODE_MAX] = { |
274 | [VERITY_OFF] = "off", | |
275 | [VERITY_DATA] = "data", | |
276 | [VERITY_HASH] = "hash", | |
b456191d | 277 | [VERITY_SIG] = "signature", |
b5b7879a DDM |
278 | }; |
279 | ||
2709d029 | 280 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); |
86bebe38 | 281 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode); |
889914ef | 282 | |
e594a3b1 LP |
283 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
284 | return (v / p) * p; | |
285 | } | |
286 | ||
287 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
288 | ||
289 | v = DIV_ROUND_UP(v, p); | |
290 | ||
291 | if (v > UINT64_MAX / p) | |
292 | return UINT64_MAX; /* overflow */ | |
293 | ||
294 | return v * p; | |
295 | } | |
296 | ||
297 | static Partition *partition_new(void) { | |
298 | Partition *p; | |
299 | ||
300 | p = new(Partition, 1); | |
301 | if (!p) | |
302 | return NULL; | |
303 | ||
304 | *p = (Partition) { | |
305 | .weight = 1000, | |
306 | .padding_weight = 0, | |
307 | .current_size = UINT64_MAX, | |
308 | .new_size = UINT64_MAX, | |
309 | .size_min = UINT64_MAX, | |
310 | .size_max = UINT64_MAX, | |
311 | .current_padding = UINT64_MAX, | |
312 | .new_padding = UINT64_MAX, | |
313 | .padding_min = UINT64_MAX, | |
314 | .padding_max = UINT64_MAX, | |
315 | .partno = UINT64_MAX, | |
316 | .offset = UINT64_MAX, | |
757bc2e4 LP |
317 | .copy_blocks_fd = -1, |
318 | .copy_blocks_size = UINT64_MAX, | |
ff0771bf | 319 | .no_auto = -1, |
e73309c5 | 320 | .read_only = -1, |
1c41c1dc | 321 | .growfs = -1, |
e594a3b1 LP |
322 | }; |
323 | ||
324 | return p; | |
325 | } | |
326 | ||
327 | static Partition* partition_free(Partition *p) { | |
328 | if (!p) | |
329 | return NULL; | |
330 | ||
331 | free(p->current_label); | |
332 | free(p->new_label); | |
333 | free(p->definition_path); | |
39fc0174 | 334 | strv_free(p->drop_in_files); |
e594a3b1 LP |
335 | |
336 | if (p->current_partition) | |
337 | fdisk_unref_partition(p->current_partition); | |
338 | if (p->new_partition) | |
339 | fdisk_unref_partition(p->new_partition); | |
340 | ||
757bc2e4 LP |
341 | free(p->copy_blocks_path); |
342 | safe_close(p->copy_blocks_fd); | |
343 | ||
53171c04 | 344 | free(p->format); |
8a794850 | 345 | strv_free(p->copy_files); |
d83d8048 | 346 | strv_free(p->make_directories); |
b5b7879a DDM |
347 | free(p->verity_match_key); |
348 | ||
349 | free(p->roothash); | |
53171c04 | 350 | |
4cee8333 DDM |
351 | free(p->split_name_format); |
352 | free(p->split_name_resolved); | |
353 | ||
e594a3b1 LP |
354 | return mfree(p); |
355 | } | |
356 | ||
9ccceb9d YW |
357 | static void partition_foreignize(Partition *p) { |
358 | assert(p); | |
359 | assert(PARTITION_EXISTS(p)); | |
360 | ||
361 | /* Reset several parameters set through definition file to make the partition foreign. */ | |
362 | ||
9ccceb9d YW |
363 | p->definition_path = mfree(p->definition_path); |
364 | p->drop_in_files = strv_free(p->drop_in_files); | |
365 | ||
366 | p->copy_blocks_path = mfree(p->copy_blocks_path); | |
367 | p->copy_blocks_fd = safe_close(p->copy_blocks_fd); | |
585c5c75 | 368 | p->copy_blocks_root = NULL; |
9ccceb9d YW |
369 | |
370 | p->format = mfree(p->format); | |
371 | p->copy_files = strv_free(p->copy_files); | |
372 | p->make_directories = strv_free(p->make_directories); | |
373 | p->verity_match_key = mfree(p->verity_match_key); | |
374 | ||
9ccceb9d YW |
375 | p->priority = 0; |
376 | p->weight = 1000; | |
377 | p->padding_weight = 0; | |
378 | p->size_min = UINT64_MAX; | |
379 | p->size_max = UINT64_MAX; | |
380 | p->padding_min = UINT64_MAX; | |
381 | p->padding_max = UINT64_MAX; | |
382 | p->no_auto = -1; | |
383 | p->read_only = -1; | |
384 | p->growfs = -1; | |
385 | p->verity = VERITY_OFF; | |
386 | } | |
387 | ||
81d1098b DDM |
388 | static bool partition_skip(const Partition *p) { |
389 | assert(p); | |
390 | ||
391 | if (arg_filter_partitions_type == FILTER_PARTITIONS_NONE) | |
392 | return false; | |
393 | ||
394 | for (size_t i = 0; i < arg_filter_partitions_size; i++) | |
395 | if (sd_id128_equal(p->type.uuid, arg_filter_partitions[i])) | |
396 | return arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE; | |
397 | ||
398 | return arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE; | |
399 | } | |
400 | ||
e594a3b1 LP |
401 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { |
402 | if (!p) | |
403 | return NULL; | |
404 | ||
405 | LIST_REMOVE(partitions, context->partitions, p); | |
406 | ||
407 | assert(context->n_partitions > 0); | |
408 | context->n_partitions--; | |
409 | ||
410 | return partition_free(p); | |
411 | } | |
412 | ||
413 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
414 | ||
415 | static Context *context_new(sd_id128_t seed) { | |
416 | Context *context; | |
417 | ||
418 | context = new(Context, 1); | |
419 | if (!context) | |
420 | return NULL; | |
421 | ||
422 | *context = (Context) { | |
423 | .start = UINT64_MAX, | |
424 | .end = UINT64_MAX, | |
425 | .total = UINT64_MAX, | |
426 | .seed = seed, | |
427 | }; | |
428 | ||
429 | return context; | |
430 | } | |
431 | ||
432 | static void context_free_free_areas(Context *context) { | |
433 | assert(context); | |
434 | ||
435 | for (size_t i = 0; i < context->n_free_areas; i++) | |
436 | free(context->free_areas[i]); | |
437 | ||
438 | context->free_areas = mfree(context->free_areas); | |
439 | context->n_free_areas = 0; | |
e594a3b1 LP |
440 | } |
441 | ||
442 | static Context *context_free(Context *context) { | |
443 | if (!context) | |
444 | return NULL; | |
445 | ||
446 | while (context->partitions) | |
447 | partition_unlink_and_free(context, context->partitions); | |
448 | assert(context->n_partitions == 0); | |
449 | ||
450 | context_free_free_areas(context); | |
451 | ||
452 | if (context->fdisk_context) | |
453 | fdisk_unref_context(context->fdisk_context); | |
454 | ||
455 | return mfree(context); | |
456 | } | |
457 | ||
458 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
459 | ||
460 | static int context_add_free_area( | |
461 | Context *context, | |
462 | uint64_t size, | |
463 | Partition *after) { | |
464 | ||
465 | FreeArea *a; | |
466 | ||
467 | assert(context); | |
468 | assert(!after || !after->padding_area); | |
469 | ||
319a4f4b | 470 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
471 | return -ENOMEM; |
472 | ||
473 | a = new(FreeArea, 1); | |
474 | if (!a) | |
475 | return -ENOMEM; | |
476 | ||
477 | *a = (FreeArea) { | |
478 | .size = size, | |
479 | .after = after, | |
480 | }; | |
481 | ||
482 | context->free_areas[context->n_free_areas++] = a; | |
483 | ||
484 | if (after) | |
485 | after->padding_area = a; | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
9ccceb9d YW |
490 | static void partition_drop_or_foreignize(Partition *p) { |
491 | if (!p || p->dropped || PARTITION_IS_FOREIGN(p)) | |
492 | return; | |
493 | ||
494 | if (PARTITION_EXISTS(p)) { | |
495 | log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.", | |
496 | strna(p->current_label ?: p->new_label), p->priority); | |
497 | ||
498 | /* Handle the partition as foreign. Do not set dropped flag. */ | |
499 | partition_foreignize(p); | |
500 | } else { | |
501 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", | |
502 | p->definition_path, p->priority); | |
503 | ||
504 | p->dropped = true; | |
505 | p->allocated_to_area = NULL; | |
506 | } | |
507 | } | |
508 | ||
509 | static bool context_drop_or_foreignize_one_priority(Context *context) { | |
e594a3b1 | 510 | int32_t priority = 0; |
e594a3b1 LP |
511 | |
512 | LIST_FOREACH(partitions, p, context->partitions) { | |
513 | if (p->dropped) | |
514 | continue; | |
e594a3b1 | 515 | |
9ccceb9d | 516 | priority = MAX(priority, p->priority); |
e594a3b1 LP |
517 | } |
518 | ||
519 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
520 | * least one existing priority */ | |
9ccceb9d | 521 | if (priority <= 0) |
e594a3b1 LP |
522 | return false; |
523 | ||
524 | LIST_FOREACH(partitions, p, context->partitions) { | |
525 | if (p->priority < priority) | |
526 | continue; | |
527 | ||
9ccceb9d | 528 | partition_drop_or_foreignize(p); |
b5b7879a DDM |
529 | |
530 | /* We ensure that all verity sibling partitions have the same priority, so it's safe | |
531 | * to drop all siblings here as well. */ | |
532 | ||
9ccceb9d YW |
533 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) |
534 | partition_drop_or_foreignize(p->siblings[mode]); | |
e594a3b1 LP |
535 | } |
536 | ||
537 | return true; | |
538 | } | |
539 | ||
a80701e6 | 540 | static uint64_t partition_min_size(const Context *context, const Partition *p) { |
e594a3b1 LP |
541 | uint64_t sz; |
542 | ||
994b3031 LP |
543 | assert(context); |
544 | assert(p); | |
545 | ||
e594a3b1 LP |
546 | /* Calculate the disk space we really need at minimum for this partition. If the partition already |
547 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
548 | * than 4K. |
549 | * | |
550 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
551 | |
552 | if (PARTITION_IS_FOREIGN(p)) { | |
553 | /* Don't allow changing size of partitions not managed by us */ | |
554 | assert(p->current_size != UINT64_MAX); | |
555 | return p->current_size; | |
556 | } | |
557 | ||
b456191d DDM |
558 | if (p->verity == VERITY_SIG) |
559 | return VERITY_SIG_SIZE; | |
560 | ||
fb08381c | 561 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 562 | |
170c9823 LP |
563 | if (!PARTITION_EXISTS(p)) { |
564 | uint64_t d = 0; | |
565 | ||
889914ef | 566 | if (p->encrypt != ENCRYPT_OFF) |
48a09a8f | 567 | d += round_up_size(LUKS2_METADATA_KEEP_FREE, context->grain_size); |
170c9823 LP |
568 | |
569 | if (p->copy_blocks_size != UINT64_MAX) | |
994b3031 | 570 | d += round_up_size(p->copy_blocks_size, context->grain_size); |
889914ef | 571 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
572 | uint64_t f; |
573 | ||
574 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
994b3031 LP |
575 | f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX; |
576 | d += f == UINT64_MAX ? context->grain_size : f; | |
170c9823 LP |
577 | } |
578 | ||
579 | if (d > sz) | |
580 | sz = d; | |
581 | } | |
757bc2e4 | 582 | |
994b3031 | 583 | return MAX(round_up_size(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, context->grain_size), sz); |
e594a3b1 LP |
584 | } |
585 | ||
994b3031 LP |
586 | static uint64_t partition_max_size(const Context *context, const Partition *p) { |
587 | uint64_t sm; | |
588 | ||
e594a3b1 LP |
589 | /* Calculate how large the partition may become at max. This is generally the configured maximum |
590 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
591 | * since we never want to shrink partitions. */ | |
592 | ||
994b3031 LP |
593 | assert(context); |
594 | assert(p); | |
595 | ||
e594a3b1 LP |
596 | if (PARTITION_IS_FOREIGN(p)) { |
597 | /* Don't allow changing size of partitions not managed by us */ | |
598 | assert(p->current_size != UINT64_MAX); | |
599 | return p->current_size; | |
600 | } | |
601 | ||
b456191d DDM |
602 | if (p->verity == VERITY_SIG) |
603 | return VERITY_SIG_SIZE; | |
604 | ||
822d9b9a YW |
605 | if (p->size_max == UINT64_MAX) |
606 | return UINT64_MAX; | |
607 | ||
994b3031 LP |
608 | sm = round_down_size(p->size_max, context->grain_size); |
609 | ||
e594a3b1 | 610 | if (p->current_size != UINT64_MAX) |
b0fbf90b | 611 | sm = MAX(p->current_size, sm); |
e594a3b1 | 612 | |
b0fbf90b | 613 | return MAX(partition_min_size(context, p), sm); |
e594a3b1 LP |
614 | } |
615 | ||
a801bb01 YW |
616 | static uint64_t partition_min_padding(const Partition *p) { |
617 | assert(p); | |
618 | return p->padding_min != UINT64_MAX ? p->padding_min : 0; | |
619 | } | |
620 | ||
621 | static uint64_t partition_max_padding(const Partition *p) { | |
622 | assert(p); | |
623 | return p->padding_max; | |
624 | } | |
625 | ||
994b3031 | 626 | static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) { |
e594a3b1 LP |
627 | uint64_t sz; |
628 | ||
629 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
630 | * takes user configured padding into account as well as any additional whitespace needed to align | |
631 | * the next partition to 4K again. */ | |
632 | ||
994b3031 LP |
633 | assert(context); |
634 | assert(p); | |
635 | ||
a801bb01 | 636 | sz = partition_min_size(context, p) + partition_min_padding(p); |
e594a3b1 LP |
637 | |
638 | if (PARTITION_EXISTS(p)) { | |
639 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
640 | assert(p->offset != UINT64_MAX); | |
994b3031 | 641 | return round_up_size(p->offset + sz, context->grain_size) - p->offset; |
e594a3b1 LP |
642 | } |
643 | ||
644 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
994b3031 | 645 | return round_up_size(sz, context->grain_size); |
e594a3b1 LP |
646 | } |
647 | ||
648 | static uint64_t free_area_available(const FreeArea *a) { | |
649 | assert(a); | |
650 | ||
651 | /* Determines how much of this free area is not allocated yet */ | |
652 | ||
653 | assert(a->size >= a->allocated); | |
654 | return a->size - a->allocated; | |
655 | } | |
656 | ||
58b06ac1 | 657 | static uint64_t free_area_current_end(Context *context, const FreeArea *a) { |
994b3031 LP |
658 | assert(context); |
659 | assert(a); | |
660 | ||
58b06ac1 YW |
661 | if (!a->after) |
662 | return free_area_available(a); | |
e594a3b1 | 663 | |
58b06ac1 YW |
664 | assert(a->after->offset != UINT64_MAX); |
665 | assert(a->after->current_size != UINT64_MAX); | |
e594a3b1 | 666 | |
58b06ac1 YW |
667 | /* Calculate where the free area ends, based on the offset of the partition preceding it. */ |
668 | return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a); | |
669 | } | |
e594a3b1 | 670 | |
58b06ac1 YW |
671 | static uint64_t free_area_min_end(Context *context, const FreeArea *a) { |
672 | assert(context); | |
673 | assert(a); | |
e594a3b1 | 674 | |
58b06ac1 YW |
675 | if (!a->after) |
676 | return 0; | |
e594a3b1 | 677 | |
58b06ac1 YW |
678 | assert(a->after->offset != UINT64_MAX); |
679 | assert(a->after->current_size != UINT64_MAX); | |
1052a114 | 680 | |
58b06ac1 YW |
681 | /* Calculate where the partition would end when we give it as much as it needs. */ |
682 | return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size); | |
683 | } | |
684 | ||
685 | static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) { | |
686 | assert(context); | |
687 | assert(a); | |
688 | ||
689 | /* Similar to free_area_available(), but takes into account that the required size and padding of the | |
690 | * preceding partition is honoured. */ | |
e594a3b1 | 691 | |
58b06ac1 | 692 | return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a)); |
e594a3b1 LP |
693 | } |
694 | ||
994b3031 LP |
695 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) { |
696 | assert(context); | |
697 | ||
698 | return CMP(free_area_available_for_new_partitions(context, *a), | |
699 | free_area_available_for_new_partitions(context, *b)); | |
e594a3b1 LP |
700 | } |
701 | ||
994b3031 LP |
702 | static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) { |
703 | assert(context); | |
e594a3b1 | 704 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ |
184cf99a | 705 | assert(amount <= total); |
994b3031 | 706 | return LESS_BY(total, round_up_size(amount, context->grain_size)); |
e594a3b1 LP |
707 | } |
708 | ||
709 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
710 | assert(amount <= total); | |
711 | return total - amount; | |
712 | } | |
713 | ||
14a4c4ed | 714 | static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) { |
e594a3b1 LP |
715 | assert(context); |
716 | ||
f39cf264 YW |
717 | /* This may be called multiple times. Reset previous assignments. */ |
718 | for (size_t i = 0; i < context->n_free_areas; i++) | |
719 | context->free_areas[i]->allocated = 0; | |
720 | ||
14a4c4ed | 721 | /* Sort free areas by size, putting smallest first */ |
994b3031 | 722 | typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context); |
e594a3b1 | 723 | |
14a4c4ed LP |
724 | /* In any case return size of the largest free area (i.e. not the size of all free areas |
725 | * combined!) */ | |
726 | if (ret_largest_free_area) | |
727 | *ret_largest_free_area = | |
728 | context->n_free_areas == 0 ? 0 : | |
994b3031 | 729 | free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]); |
14a4c4ed | 730 | |
cdbcc339 YW |
731 | /* Check that each existing partition can fit its area. */ |
732 | for (size_t i = 0; i < context->n_free_areas; i++) | |
733 | if (free_area_current_end(context, context->free_areas[i]) < | |
734 | free_area_min_end(context, context->free_areas[i])) | |
735 | return false; | |
736 | ||
14a4c4ed | 737 | /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */ |
e594a3b1 LP |
738 | LIST_FOREACH(partitions, p, context->partitions) { |
739 | bool fits = false; | |
740 | uint64_t required; | |
741 | FreeArea *a = NULL; | |
742 | ||
743 | /* Skip partitions we already dropped or that already exist */ | |
744 | if (p->dropped || PARTITION_EXISTS(p)) | |
745 | continue; | |
746 | ||
e594a3b1 | 747 | /* How much do we need to fit? */ |
994b3031 LP |
748 | required = partition_min_size_with_padding(context, p); |
749 | assert(required % context->grain_size == 0); | |
e594a3b1 LP |
750 | |
751 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
752 | a = context->free_areas[i]; | |
753 | ||
994b3031 | 754 | if (free_area_available_for_new_partitions(context, a) >= required) { |
e594a3b1 LP |
755 | fits = true; |
756 | break; | |
757 | } | |
758 | } | |
759 | ||
760 | if (!fits) | |
761 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
762 | ||
763 | /* Assign the partition to this free area */ | |
764 | p->allocated_to_area = a; | |
765 | ||
766 | /* Budget the minimal partition size */ | |
767 | a->allocated += required; | |
768 | } | |
769 | ||
770 | return true; | |
771 | } | |
772 | ||
773 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
774 | uint64_t weight_sum = 0; | |
e594a3b1 LP |
775 | |
776 | assert(context); | |
777 | assert(a); | |
778 | assert(ret); | |
779 | ||
780 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
781 | ||
782 | LIST_FOREACH(partitions, p, context->partitions) { | |
783 | if (p->padding_area != a && p->allocated_to_area != a) | |
784 | continue; | |
785 | ||
786 | if (p->weight > UINT64_MAX - weight_sum) | |
787 | goto overflow_sum; | |
788 | weight_sum += p->weight; | |
789 | ||
790 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
791 | goto overflow_sum; | |
792 | weight_sum += p->padding_weight; | |
793 | } | |
794 | ||
795 | *ret = weight_sum; | |
796 | return 0; | |
797 | ||
798 | overflow_sum: | |
799 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64bit range, refusing."); | |
800 | } | |
801 | ||
0245e15a | 802 | static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) { |
e594a3b1 | 803 | assert(weight_sum >= weight); |
e594a3b1 | 804 | |
0245e15a YW |
805 | for (;;) { |
806 | if (weight == 0) | |
807 | return 0; | |
808 | if (weight == weight_sum) | |
809 | return value; | |
810 | if (value <= UINT64_MAX / weight) | |
811 | return value * weight / weight_sum; | |
812 | ||
813 | /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the | |
814 | * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down: | |
815 | * - the sum of scale_by_weight() for all weights must not be larger than the input value, | |
816 | * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */ | |
817 | weight_sum = DIV_ROUND_UP(weight_sum, 2); | |
818 | weight /= 2; | |
e594a3b1 | 819 | } |
e594a3b1 LP |
820 | } |
821 | ||
822 | typedef enum GrowPartitionPhase { | |
bf99aed6 YW |
823 | /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */ |
824 | PHASE_FOREIGN, | |
825 | ||
e594a3b1 LP |
826 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ |
827 | PHASE_OVERCHARGE, | |
828 | ||
829 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
830 | PHASE_UNDERCHARGE, | |
831 | ||
832 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
833 | PHASE_DISTRIBUTE, | |
ae0613c6 LP |
834 | |
835 | _GROW_PARTITION_PHASE_MAX, | |
e594a3b1 LP |
836 | } GrowPartitionPhase; |
837 | ||
0245e15a | 838 | static bool context_grow_partitions_phase( |
e594a3b1 LP |
839 | Context *context, |
840 | FreeArea *a, | |
841 | GrowPartitionPhase phase, | |
842 | uint64_t *span, | |
843 | uint64_t *weight_sum) { | |
844 | ||
2a503ad2 YW |
845 | bool try_again = false; |
846 | ||
e594a3b1 LP |
847 | assert(context); |
848 | assert(a); | |
0245e15a YW |
849 | assert(span); |
850 | assert(weight_sum); | |
e594a3b1 LP |
851 | |
852 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
853 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
854 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
855 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
856 | LIST_FOREACH(partitions, p, context->partitions) { | |
857 | ||
858 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 859 | * preceding it, or allocated into it */ |
e594a3b1 LP |
860 | if (p->allocated_to_area != a && p->padding_area != a) |
861 | continue; | |
862 | ||
863 | if (p->new_size == UINT64_MAX) { | |
e594a3b1 | 864 | uint64_t share, rsz, xsz; |
2a503ad2 | 865 | bool charge = false; |
e594a3b1 LP |
866 | |
867 | /* Calculate how much this space this partition needs if everyone would get | |
868 | * the weight based share */ | |
0245e15a | 869 | share = scale_by_weight(*span, p->weight, *weight_sum); |
e594a3b1 | 870 | |
994b3031 LP |
871 | rsz = partition_min_size(context, p); |
872 | xsz = partition_max_size(context, p); | |
e594a3b1 | 873 | |
bf99aed6 YW |
874 | if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) { |
875 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
876 | ||
877 | p->new_size = p->current_size; | |
878 | charge = true; | |
879 | ||
880 | } else if (phase == PHASE_OVERCHARGE && rsz > share) { | |
e594a3b1 LP |
881 | /* This partition needs more than its calculated share. Let's assign |
882 | * it that, and take this partition out of all calculations and start | |
883 | * again. */ | |
884 | ||
885 | p->new_size = rsz; | |
886 | charge = try_again = true; | |
887 | ||
822d9b9a | 888 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
e594a3b1 LP |
889 | /* This partition accepts less than its calculated |
890 | * share. Let's assign it that, and take this partition out | |
891 | * of all calculations and start again. */ | |
892 | ||
893 | p->new_size = xsz; | |
894 | charge = try_again = true; | |
895 | ||
896 | } else if (phase == PHASE_DISTRIBUTE) { | |
897 | /* This partition can accept its calculated share. Let's | |
898 | * assign it. There's no need to restart things here since | |
899 | * assigning this shouldn't impact the shares of the other | |
900 | * partitions. */ | |
901 | ||
d7c46b5e YW |
902 | assert(share >= rsz); |
903 | p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
904 | charge = true; |
905 | } | |
906 | ||
907 | if (charge) { | |
994b3031 | 908 | *span = charge_size(context, *span, p->new_size); |
e594a3b1 LP |
909 | *weight_sum = charge_weight(*weight_sum, p->weight); |
910 | } | |
e594a3b1 LP |
911 | } |
912 | ||
913 | if (p->new_padding == UINT64_MAX) { | |
a801bb01 | 914 | uint64_t share, rsz, xsz; |
2a503ad2 | 915 | bool charge = false; |
e594a3b1 | 916 | |
0245e15a | 917 | share = scale_by_weight(*span, p->padding_weight, *weight_sum); |
e594a3b1 | 918 | |
a801bb01 YW |
919 | rsz = partition_min_padding(p); |
920 | xsz = partition_max_padding(p); | |
921 | ||
922 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
923 | p->new_padding = rsz; | |
e594a3b1 | 924 | charge = try_again = true; |
a801bb01 YW |
925 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
926 | p->new_padding = xsz; | |
e594a3b1 LP |
927 | charge = try_again = true; |
928 | } else if (phase == PHASE_DISTRIBUTE) { | |
d7c46b5e YW |
929 | assert(share >= rsz); |
930 | p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
931 | charge = true; |
932 | } | |
933 | ||
934 | if (charge) { | |
994b3031 | 935 | *span = charge_size(context, *span, p->new_padding); |
e594a3b1 LP |
936 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); |
937 | } | |
e594a3b1 LP |
938 | } |
939 | } | |
940 | ||
2a503ad2 | 941 | return !try_again; |
e594a3b1 LP |
942 | } |
943 | ||
19903a43 YW |
944 | static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) { |
945 | uint64_t m; | |
946 | ||
947 | assert(context); | |
948 | assert(a); | |
949 | assert(p); | |
950 | assert(span); | |
951 | ||
952 | if (*span == 0) | |
953 | return; | |
954 | ||
955 | if (p->allocated_to_area != a) | |
956 | return; | |
957 | ||
958 | if (PARTITION_IS_FOREIGN(p)) | |
959 | return; | |
960 | ||
961 | assert(p->new_size != UINT64_MAX); | |
962 | ||
963 | /* Calculate new size and align. */ | |
964 | m = round_down_size(p->new_size + *span, context->grain_size); | |
965 | /* But ensure this doesn't shrink the size. */ | |
966 | m = MAX(m, p->new_size); | |
967 | /* And ensure this doesn't exceed the maximum size. */ | |
968 | m = MIN(m, partition_max_size(context, p)); | |
969 | ||
970 | assert(m >= p->new_size); | |
971 | ||
972 | *span = charge_size(context, *span, m - p->new_size); | |
973 | p->new_size = m; | |
974 | } | |
975 | ||
e594a3b1 LP |
976 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { |
977 | uint64_t weight_sum = 0, span; | |
978 | int r; | |
979 | ||
980 | assert(context); | |
981 | assert(a); | |
982 | ||
983 | r = context_sum_weights(context, a, &weight_sum); | |
984 | if (r < 0) | |
985 | return r; | |
986 | ||
987 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
988 | span = a->size; | |
989 | if (a->after) { | |
990 | assert(a->after->offset != UINT64_MAX); | |
991 | assert(a->after->current_size != UINT64_MAX); | |
992 | ||
994b3031 | 993 | span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset; |
e594a3b1 LP |
994 | } |
995 | ||
0245e15a YW |
996 | for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;) |
997 | if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum)) | |
998 | phase++; /* go to the next phase */ | |
e594a3b1 | 999 | |
162392b7 | 1000 | /* We still have space left over? Donate to preceding partition if we have one */ |
19903a43 YW |
1001 | if (span > 0 && a->after) |
1002 | context_grow_partition_one(context, a, a->after, &span); | |
e594a3b1 | 1003 | |
162392b7 | 1004 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 | 1005 | * size limit), then let's donate it to whoever wants it. */ |
03677889 | 1006 | if (span > 0) |
e594a3b1 | 1007 | LIST_FOREACH(partitions, p, context->partitions) { |
19903a43 | 1008 | context_grow_partition_one(context, a, p, &span); |
e594a3b1 LP |
1009 | if (span == 0) |
1010 | break; | |
1011 | } | |
e594a3b1 | 1012 | |
162392b7 | 1013 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
1014 | if (span > 0 && a->after) { |
1015 | assert(a->after->new_padding != UINT64_MAX); | |
1016 | a->after->new_padding += span; | |
1017 | } | |
1018 | ||
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | static int context_grow_partitions(Context *context) { | |
e594a3b1 LP |
1023 | int r; |
1024 | ||
1025 | assert(context); | |
1026 | ||
1027 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
1028 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
1029 | if (r < 0) | |
1030 | return r; | |
1031 | } | |
1032 | ||
1033 | /* All existing partitions that have no free space after them can't change size */ | |
1034 | LIST_FOREACH(partitions, p, context->partitions) { | |
1035 | if (p->dropped) | |
1036 | continue; | |
1037 | ||
1038 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
1039 | /* The algorithm above must have initialized this already */ | |
1040 | assert(p->new_size != UINT64_MAX); | |
1041 | continue; | |
1042 | } | |
1043 | ||
1044 | assert(p->new_size == UINT64_MAX); | |
1045 | p->new_size = p->current_size; | |
1046 | ||
1047 | assert(p->new_padding == UINT64_MAX); | |
1048 | p->new_padding = p->current_padding; | |
1049 | } | |
1050 | ||
1051 | return 0; | |
1052 | } | |
1053 | ||
00428745 | 1054 | static uint64_t find_first_unused_partno(Context *context) { |
e594a3b1 | 1055 | uint64_t partno = 0; |
e594a3b1 LP |
1056 | |
1057 | assert(context); | |
1058 | ||
00428745 DDM |
1059 | for (bool changed = true; changed;) { |
1060 | changed = false; | |
e594a3b1 | 1061 | |
00428745 DDM |
1062 | LIST_FOREACH(partitions, p, context->partitions) { |
1063 | if (p->partno != UINT64_MAX && p->partno == partno) { | |
1064 | partno++; | |
1065 | changed = true; | |
1066 | break; | |
1067 | } | |
1068 | } | |
e594a3b1 LP |
1069 | } |
1070 | ||
00428745 DDM |
1071 | return partno; |
1072 | } | |
1073 | ||
1074 | static void context_place_partitions(Context *context) { | |
1075 | ||
1076 | assert(context); | |
1077 | ||
e594a3b1 LP |
1078 | for (size_t i = 0; i < context->n_free_areas; i++) { |
1079 | FreeArea *a = context->free_areas[i]; | |
2ea7eb00 FS |
1080 | _unused_ uint64_t left; |
1081 | uint64_t start; | |
e594a3b1 LP |
1082 | |
1083 | if (a->after) { | |
1084 | assert(a->after->offset != UINT64_MAX); | |
1085 | assert(a->after->new_size != UINT64_MAX); | |
1086 | assert(a->after->new_padding != UINT64_MAX); | |
1087 | ||
1088 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
1089 | } else | |
1090 | start = context->start; | |
1091 | ||
994b3031 | 1092 | start = round_up_size(start, context->grain_size); |
e594a3b1 LP |
1093 | left = a->size; |
1094 | ||
1095 | LIST_FOREACH(partitions, p, context->partitions) { | |
1096 | if (p->allocated_to_area != a) | |
1097 | continue; | |
1098 | ||
1099 | p->offset = start; | |
00428745 | 1100 | p->partno = find_first_unused_partno(context); |
e594a3b1 LP |
1101 | |
1102 | assert(left >= p->new_size); | |
1103 | start += p->new_size; | |
1104 | left -= p->new_size; | |
1105 | ||
1106 | assert(left >= p->new_padding); | |
1107 | start += p->new_padding; | |
1108 | left -= p->new_padding; | |
1109 | } | |
1110 | } | |
1111 | } | |
1112 | ||
e594a3b1 LP |
1113 | static int config_parse_type( |
1114 | const char *unit, | |
1115 | const char *filename, | |
1116 | unsigned line, | |
1117 | const char *section, | |
1118 | unsigned section_line, | |
1119 | const char *lvalue, | |
1120 | int ltype, | |
1121 | const char *rvalue, | |
1122 | void *data, | |
1123 | void *userdata) { | |
1124 | ||
22e932f4 | 1125 | GptPartitionType *type = ASSERT_PTR(data); |
e594a3b1 LP |
1126 | int r; |
1127 | ||
1128 | assert(rvalue); | |
e594a3b1 | 1129 | |
22e932f4 | 1130 | r = gpt_partition_type_from_string(rvalue, type); |
e594a3b1 LP |
1131 | if (r < 0) |
1132 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
1137 | static int config_parse_label( | |
1138 | const char *unit, | |
1139 | const char *filename, | |
1140 | unsigned line, | |
1141 | const char *section, | |
1142 | unsigned section_line, | |
1143 | const char *lvalue, | |
1144 | int ltype, | |
1145 | const char *rvalue, | |
1146 | void *data, | |
1147 | void *userdata) { | |
1148 | ||
e031166e | 1149 | _cleanup_free_ char *resolved = NULL; |
99534007 | 1150 | char **label = ASSERT_PTR(data); |
e594a3b1 LP |
1151 | int r; |
1152 | ||
1153 | assert(rvalue); | |
e594a3b1 | 1154 | |
be9ce018 LP |
1155 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
1156 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
1157 | ||
de61a04b | 1158 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved); |
e031166e | 1159 | if (r < 0) { |
e459258f | 1160 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
1161 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
1162 | return 0; | |
1163 | } | |
1164 | ||
1165 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
1166 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1167 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
1168 | return 0; | |
1169 | } | |
1170 | ||
22a0a36e LP |
1171 | r = gpt_partition_label_valid(resolved); |
1172 | if (r < 0) { | |
1173 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1174 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
1175 | resolved, rvalue); | |
1176 | return 0; | |
1177 | } | |
1178 | if (!r) { | |
e594a3b1 | 1179 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
1180 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
1181 | resolved, rvalue); | |
e594a3b1 LP |
1182 | return 0; |
1183 | } | |
1184 | ||
e031166e | 1185 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1186 | return 0; |
1187 | } | |
1188 | ||
1189 | static int config_parse_weight( | |
1190 | const char *unit, | |
1191 | const char *filename, | |
1192 | unsigned line, | |
1193 | const char *section, | |
1194 | unsigned section_line, | |
1195 | const char *lvalue, | |
1196 | int ltype, | |
1197 | const char *rvalue, | |
1198 | void *data, | |
1199 | void *userdata) { | |
1200 | ||
f126038f | 1201 | uint32_t *w = ASSERT_PTR(data), v; |
e594a3b1 LP |
1202 | int r; |
1203 | ||
1204 | assert(rvalue); | |
e594a3b1 LP |
1205 | |
1206 | r = safe_atou32(rvalue, &v); | |
1207 | if (r < 0) { | |
1208 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1209 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1210 | return 0; | |
1211 | } | |
1212 | ||
1213 | if (v > 1000U*1000U) { | |
c8f3d767 | 1214 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1215 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1216 | return 0; | |
1217 | } | |
1218 | ||
f126038f | 1219 | *w = v; |
e594a3b1 LP |
1220 | return 0; |
1221 | } | |
1222 | ||
1223 | static int config_parse_size4096( | |
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 | ||
1235 | uint64_t *sz = data, parsed; | |
1236 | int r; | |
1237 | ||
1238 | assert(rvalue); | |
1239 | assert(data); | |
1240 | ||
1241 | r = parse_size(rvalue, 1024, &parsed); | |
1242 | if (r < 0) | |
c8f3d767 | 1243 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1244 | "Failed to parse size value: %s", rvalue); |
1245 | ||
1246 | if (ltype > 0) | |
1247 | *sz = round_up_size(parsed, 4096); | |
1248 | else if (ltype < 0) | |
1249 | *sz = round_down_size(parsed, 4096); | |
1250 | else | |
1251 | *sz = parsed; | |
1252 | ||
1253 | if (*sz != parsed) | |
e2341b6b DT |
1254 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.", |
1255 | lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz); | |
e594a3b1 LP |
1256 | |
1257 | return 0; | |
1258 | } | |
1259 | ||
53171c04 LP |
1260 | static int config_parse_fstype( |
1261 | const char *unit, | |
1262 | const char *filename, | |
1263 | unsigned line, | |
1264 | const char *section, | |
1265 | unsigned section_line, | |
1266 | const char *lvalue, | |
1267 | int ltype, | |
1268 | const char *rvalue, | |
1269 | void *data, | |
1270 | void *userdata) { | |
1271 | ||
99534007 | 1272 | char **fstype = ASSERT_PTR(data); |
53171c04 LP |
1273 | |
1274 | assert(rvalue); | |
53171c04 LP |
1275 | |
1276 | if (!filename_is_valid(rvalue)) | |
1277 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1278 | "File system type is not valid, refusing: %s", rvalue); | |
1279 | ||
1280 | return free_and_strdup_warn(fstype, rvalue); | |
1281 | } | |
1282 | ||
8a794850 LP |
1283 | static int config_parse_copy_files( |
1284 | const char *unit, | |
1285 | const char *filename, | |
1286 | unsigned line, | |
1287 | const char *section, | |
1288 | unsigned section_line, | |
1289 | const char *lvalue, | |
1290 | int ltype, | |
1291 | const char *rvalue, | |
1292 | void *data, | |
1293 | void *userdata) { | |
1294 | ||
1295 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1296 | const char *p = rvalue, *target; | |
99534007 | 1297 | Partition *partition = ASSERT_PTR(data); |
8a794850 LP |
1298 | int r; |
1299 | ||
1300 | assert(rvalue); | |
8a794850 LP |
1301 | |
1302 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1303 | if (r < 0) | |
1304 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1305 | if (r == 0) { | |
1306 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1307 | return 0; | |
1308 | } | |
1309 | ||
1310 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1311 | if (r < 0) | |
1312 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1313 | if (r == 0) | |
1314 | target = source; /* No target, then it's the same as the source */ | |
1315 | else | |
1316 | target = buffer; | |
1317 | ||
1318 | if (!isempty(p)) | |
1319 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1320 | ||
de61a04b | 1321 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source); |
8a794850 LP |
1322 | if (r < 0) { |
1323 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1324 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1325 | return 0; | |
1326 | } | |
1327 | ||
0ade2213 LP |
1328 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1329 | if (r < 0) | |
8a794850 | 1330 | return 0; |
8a794850 | 1331 | |
de61a04b | 1332 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target); |
8a794850 LP |
1333 | if (r < 0) { |
1334 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1335 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1336 | return 0; | |
1337 | } | |
1338 | ||
0ade2213 LP |
1339 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1340 | if (r < 0) | |
8a794850 | 1341 | return 0; |
8a794850 LP |
1342 | |
1343 | r = strv_consume_pair(&partition->copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); | |
1344 | if (r < 0) | |
1345 | return log_oom(); | |
1346 | ||
1347 | return 0; | |
1348 | } | |
1349 | ||
5c08da58 LP |
1350 | static int config_parse_copy_blocks( |
1351 | const char *unit, | |
1352 | const char *filename, | |
1353 | unsigned line, | |
1354 | const char *section, | |
1355 | unsigned section_line, | |
1356 | const char *lvalue, | |
1357 | int ltype, | |
1358 | const char *rvalue, | |
1359 | void *data, | |
1360 | void *userdata) { | |
1361 | ||
1362 | _cleanup_free_ char *d = NULL; | |
99534007 | 1363 | Partition *partition = ASSERT_PTR(data); |
5c08da58 LP |
1364 | int r; |
1365 | ||
1366 | assert(rvalue); | |
5c08da58 LP |
1367 | |
1368 | if (isempty(rvalue)) { | |
1369 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1370 | partition->copy_blocks_auto = false; | |
1371 | return 0; | |
1372 | } | |
1373 | ||
1374 | if (streq(rvalue, "auto")) { | |
1375 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1376 | partition->copy_blocks_auto = true; | |
585c5c75 | 1377 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1378 | return 0; |
1379 | } | |
1380 | ||
de61a04b | 1381 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
5c08da58 LP |
1382 | if (r < 0) { |
1383 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1384 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1385 | return 0; | |
1386 | } | |
1387 | ||
1388 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1389 | if (r < 0) | |
1390 | return 0; | |
1391 | ||
1392 | free_and_replace(partition->copy_blocks_path, d); | |
1393 | partition->copy_blocks_auto = false; | |
585c5c75 | 1394 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1395 | return 0; |
1396 | } | |
1397 | ||
d83d8048 LP |
1398 | static int config_parse_make_dirs( |
1399 | const char *unit, | |
1400 | const char *filename, | |
1401 | unsigned line, | |
1402 | const char *section, | |
1403 | unsigned section_line, | |
1404 | const char *lvalue, | |
1405 | int ltype, | |
1406 | const char *rvalue, | |
1407 | void *data, | |
1408 | void *userdata) { | |
1409 | ||
99534007 DT |
1410 | Partition *partition = ASSERT_PTR(data); |
1411 | const char *p = ASSERT_PTR(rvalue); | |
d83d8048 LP |
1412 | int r; |
1413 | ||
d83d8048 LP |
1414 | for (;;) { |
1415 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1416 | ||
1417 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1418 | if (r == -ENOMEM) | |
1419 | return log_oom(); | |
1420 | if (r < 0) { | |
1421 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1422 | return 0; | |
1423 | } | |
1424 | if (r == 0) | |
1425 | return 0; | |
1426 | ||
de61a04b | 1427 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
d83d8048 LP |
1428 | if (r < 0) { |
1429 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1430 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1431 | continue; | |
1432 | } | |
1433 | ||
1434 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1435 | if (r < 0) | |
1436 | continue; | |
1437 | ||
1438 | r = strv_consume(&partition->make_directories, TAKE_PTR(d)); | |
1439 | if (r < 0) | |
1440 | return log_oom(); | |
1441 | } | |
1442 | } | |
1443 | ||
889914ef LP |
1444 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1445 | ||
e73309c5 LP |
1446 | static int config_parse_gpt_flags( |
1447 | const char *unit, | |
1448 | const char *filename, | |
1449 | unsigned line, | |
1450 | const char *section, | |
1451 | unsigned section_line, | |
1452 | const char *lvalue, | |
1453 | int ltype, | |
1454 | const char *rvalue, | |
1455 | void *data, | |
1456 | void *userdata) { | |
1457 | ||
99534007 | 1458 | uint64_t *gpt_flags = ASSERT_PTR(data); |
e73309c5 LP |
1459 | int r; |
1460 | ||
1461 | assert(rvalue); | |
e73309c5 LP |
1462 | |
1463 | r = safe_atou64(rvalue, gpt_flags); | |
1464 | if (r < 0) { | |
1465 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1466 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1467 | return 0; | |
1468 | } | |
1469 | ||
1470 | return 0; | |
1471 | } | |
1472 | ||
11749b61 DDM |
1473 | static int config_parse_uuid( |
1474 | const char *unit, | |
1475 | const char *filename, | |
1476 | unsigned line, | |
1477 | const char *section, | |
1478 | unsigned section_line, | |
1479 | const char *lvalue, | |
1480 | int ltype, | |
1481 | const char *rvalue, | |
1482 | void *data, | |
1483 | void *userdata) { | |
1484 | ||
1485 | Partition *partition = ASSERT_PTR(data); | |
1486 | int r; | |
1487 | ||
1488 | if (isempty(rvalue)) { | |
1489 | partition->new_uuid = SD_ID128_NULL; | |
1490 | partition->new_uuid_is_set = false; | |
1491 | return 0; | |
1492 | } | |
1493 | ||
1494 | if (streq(rvalue, "null")) { | |
1495 | partition->new_uuid = SD_ID128_NULL; | |
1496 | partition->new_uuid_is_set = true; | |
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | r = sd_id128_from_string(rvalue, &partition->new_uuid); | |
1501 | if (r < 0) { | |
1502 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue); | |
1503 | return 0; | |
1504 | } | |
1505 | ||
1506 | partition->new_uuid_is_set = true; | |
1507 | ||
1508 | return 0; | |
1509 | } | |
1510 | ||
b5b7879a DDM |
1511 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF, "Invalid verity mode"); |
1512 | ||
39fc0174 | 1513 | static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) { |
e594a3b1 LP |
1514 | |
1515 | ConfigTableItem table[] = { | |
22e932f4 | 1516 | { "Partition", "Type", config_parse_type, 0, &p->type }, |
4cee8333 DDM |
1517 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, |
1518 | { "Partition", "UUID", config_parse_uuid, 0, p }, | |
1519 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, | |
1520 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1521 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1522 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1523 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1524 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1525 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1526 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1527 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1528 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1529 | { "Partition", "CopyFiles", config_parse_copy_files, 0, p }, | |
1530 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, p }, | |
1531 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
1532 | { "Partition", "Verity", config_parse_verity, 0, &p->verity }, | |
1533 | { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key }, | |
1534 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, | |
1535 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
1536 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, | |
1537 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, | |
1538 | { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format }, | |
c4a87b76 | 1539 | { "Partition", "Minimize", config_parse_bool, 0, &p->minimize }, |
e594a3b1 LP |
1540 | {} |
1541 | }; | |
1542 | int r; | |
39fc0174 RP |
1543 | _cleanup_free_ char *filename = NULL; |
1544 | const char* dropin_dirname; | |
e594a3b1 | 1545 | |
39fc0174 RP |
1546 | r = path_extract_filename(path, &filename); |
1547 | if (r < 0) | |
bef69ae8 | 1548 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); |
39fc0174 RP |
1549 | |
1550 | dropin_dirname = strjoina(filename, ".d"); | |
1551 | ||
1552 | r = config_parse_many( | |
1553 | STRV_MAKE_CONST(path), | |
1554 | conf_file_dirs, | |
1555 | dropin_dirname, | |
1556 | "Partition\0", | |
1557 | config_item_table_lookup, table, | |
1558 | CONFIG_PARSE_WARN, | |
1559 | p, | |
1560 | NULL, | |
1561 | &p->drop_in_files); | |
e594a3b1 LP |
1562 | if (r < 0) |
1563 | return r; | |
1564 | ||
1565 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) | |
1566 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1567 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1568 | ||
1569 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1570 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1571 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1572 | ||
22e932f4 | 1573 | if (sd_id128_is_null(p->type.uuid)) |
e594a3b1 LP |
1574 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1575 | "Type= not defined, refusing."); | |
1576 | ||
5c08da58 LP |
1577 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1578 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
53171c04 | 1579 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5c08da58 | 1580 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); |
53171c04 | 1581 | |
d83d8048 | 1582 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1583 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1584 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1585 | ||
5c08da58 | 1586 | 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 | 1587 | /* Pick "ext4" as file system if we are configured to copy files or encrypt the device */ |
8a794850 LP |
1588 | p->format = strdup("ext4"); |
1589 | if (!p->format) | |
1590 | return log_oom(); | |
1591 | } | |
1592 | ||
c4a87b76 DDM |
1593 | if (p->minimize && !p->format) |
1594 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1595 | "Minimize= can only be enabled if Format= is set"); | |
1596 | ||
6d6cefad DDM |
1597 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && !mkfs_supports_root_option(p->format) && geteuid() != 0) |
1598 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EPERM), | |
1599 | "Need to be root to populate %s filesystems with CopyFiles=/MakeDirectories=", | |
1600 | p->format); | |
1601 | ||
b5b7879a DDM |
1602 | if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) { |
1603 | r = dlopen_cryptsetup(); | |
1604 | if (r < 0) | |
1605 | return log_syntax(NULL, LOG_ERR, path, 1, r, | |
1606 | "libcryptsetup not found, Verity=/Encrypt= are not supported: %m"); | |
1607 | } | |
1608 | ||
1609 | if (p->verity != VERITY_OFF && !p->verity_match_key) | |
1610 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1611 | "VerityMatchKey= must be set if Verity=%s", verity_mode_to_string(p->verity)); | |
1612 | ||
1613 | if (p->verity == VERITY_OFF && p->verity_match_key) | |
1614 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1615 | "VerityMatchKey= can only be set if Verity= is not \"%s\"", | |
1616 | verity_mode_to_string(p->verity)); | |
1617 | ||
b456191d DDM |
1618 | if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && |
1619 | (p->copy_files || p->copy_blocks_path || p->copy_blocks_auto || p->format || p->make_directories)) | |
b5b7879a DDM |
1620 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1621 | "CopyBlocks=/CopyFiles=/Format=/MakeDirectories= cannot be used with Verity=%s", | |
1622 | verity_mode_to_string(p->verity)); | |
1623 | ||
1624 | if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF) | |
1625 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1626 | "Encrypting verity hash/data partitions is not supported"); | |
1627 | ||
b456191d DDM |
1628 | if (p->verity == VERITY_SIG && !arg_private_key) |
1629 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1630 | "Verity signature partition requested but no private key provided (--private-key=)"); | |
1631 | ||
1632 | if (p->verity == VERITY_SIG && !arg_certificate) | |
1633 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
ba4a5eff | 1634 | "Verity signature partition requested but no PEM certificate provided (--certificate=)"); |
b456191d DDM |
1635 | |
1636 | if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX)) | |
1637 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1638 | "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s", | |
1639 | verity_mode_to_string(p->verity)); | |
1640 | ||
e73309c5 | 1641 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
22e932f4 DDM |
1642 | if ((p->type.designator == PARTITION_ROOT_VERITY || |
1643 | p->type.designator == PARTITION_USR_VERITY) && | |
e73309c5 LP |
1644 | p->read_only < 0) |
1645 | p->read_only = true; | |
1646 | ||
1c41c1dc | 1647 | /* Default to "growfs" on, unless read-only */ |
22e932f4 | 1648 | if (gpt_partition_type_knows_growfs(p->type) && |
1c41c1dc LP |
1649 | p->read_only <= 0) |
1650 | p->growfs = true; | |
1651 | ||
4cee8333 DDM |
1652 | if (!p->split_name_format) { |
1653 | char *s = strdup("%t"); | |
1654 | if (!s) | |
1655 | return log_oom(); | |
1656 | ||
1657 | p->split_name_format = s; | |
1658 | } else if (streq(p->split_name_format, "-")) | |
1659 | p->split_name_format = mfree(p->split_name_format); | |
1660 | ||
e594a3b1 LP |
1661 | return 0; |
1662 | } | |
1663 | ||
b5b7879a DDM |
1664 | static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) { |
1665 | Partition *s = NULL; | |
1666 | ||
1667 | assert(p); | |
1668 | assert(p->verity != VERITY_OFF); | |
1669 | assert(p->verity_match_key); | |
1670 | assert(mode != VERITY_OFF); | |
1671 | assert(p->verity != mode); | |
1672 | assert(ret); | |
1673 | ||
1674 | /* Try to find the matching sibling partition of the given type for a verity partition. For a data | |
af3d3873 YW |
1675 | * partition, this is the corresponding hash partition with the same verity name (and vice versa for |
1676 | * the hash partition). */ | |
b5b7879a DDM |
1677 | |
1678 | LIST_FOREACH(partitions, q, context->partitions) { | |
1679 | if (p == q) | |
1680 | continue; | |
1681 | ||
1682 | if (q->verity != mode) | |
1683 | continue; | |
1684 | ||
1685 | assert(q->verity_match_key); | |
1686 | ||
1687 | if (!streq(p->verity_match_key, q->verity_match_key)) | |
1688 | continue; | |
1689 | ||
1690 | if (s) | |
1691 | return -ENOTUNIQ; | |
1692 | ||
1693 | s = q; | |
1694 | } | |
1695 | ||
1696 | if (!s) | |
1697 | return -ENXIO; | |
1698 | ||
1699 | *ret = s; | |
1700 | ||
1701 | return 0; | |
1702 | } | |
1703 | ||
e594a3b1 LP |
1704 | static int context_read_definitions( |
1705 | Context *context, | |
224c853f | 1706 | char **directories, |
e594a3b1 LP |
1707 | const char *root) { |
1708 | ||
1709 | _cleanup_strv_free_ char **files = NULL; | |
1710 | Partition *last = NULL; | |
e594a3b1 | 1711 | int r; |
39fc0174 | 1712 | const char *const *dirs; |
e594a3b1 LP |
1713 | |
1714 | assert(context); | |
1715 | ||
224c853f | 1716 | dirs = (const char* const*) (directories ?: CONF_PATHS_STRV("repart.d")); |
39fc0174 | 1717 | |
224c853f | 1718 | r = conf_files_list_strv(&files, ".conf", directories ? NULL : root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs); |
e594a3b1 LP |
1719 | if (r < 0) |
1720 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
1721 | ||
1722 | STRV_FOREACH(f, files) { | |
1723 | _cleanup_(partition_freep) Partition *p = NULL; | |
1724 | ||
1725 | p = partition_new(); | |
1726 | if (!p) | |
1727 | return log_oom(); | |
1728 | ||
1729 | p->definition_path = strdup(*f); | |
1730 | if (!p->definition_path) | |
1731 | return log_oom(); | |
1732 | ||
39fc0174 | 1733 | r = partition_read_definition(p, *f, dirs); |
e594a3b1 LP |
1734 | if (r < 0) |
1735 | return r; | |
1736 | ||
1737 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
1738 | last = TAKE_PTR(p); | |
1739 | context->n_partitions++; | |
1740 | } | |
1741 | ||
b5b7879a DDM |
1742 | /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */ |
1743 | ||
1744 | LIST_FOREACH(partitions, p, context->partitions) { | |
1745 | if (p->verity == VERITY_OFF) | |
1746 | continue; | |
1747 | ||
1748 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
b456191d | 1749 | Partition *q = NULL; |
b5b7879a DDM |
1750 | |
1751 | if (p->verity == mode) | |
1752 | continue; | |
1753 | ||
1754 | if (p->siblings[mode]) | |
1755 | continue; | |
1756 | ||
1757 | r = find_verity_sibling(context, p, mode, &q); | |
8e52ed02 DDM |
1758 | if (r == -ENXIO) { |
1759 | if (mode != VERITY_SIG) | |
1760 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1761 | "Missing verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1762 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
1763 | } else if (r == -ENOTUNIQ) | |
b5b7879a DDM |
1764 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), |
1765 | "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s", | |
1766 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
8e52ed02 DDM |
1767 | else if (r < 0) |
1768 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r, | |
1769 | "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1770 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
b5b7879a | 1771 | |
b456191d DDM |
1772 | if (q) { |
1773 | if (q->priority != p->priority) | |
1774 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1775 | "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s", | |
1776 | p->priority, q->priority, p->verity_match_key); | |
b5b7879a | 1777 | |
b456191d DDM |
1778 | p->siblings[mode] = q; |
1779 | } | |
b5b7879a DDM |
1780 | } |
1781 | } | |
1782 | ||
e594a3b1 LP |
1783 | return 0; |
1784 | } | |
1785 | ||
e594a3b1 LP |
1786 | static int determine_current_padding( |
1787 | struct fdisk_context *c, | |
1788 | struct fdisk_table *t, | |
1789 | struct fdisk_partition *p, | |
994b3031 LP |
1790 | uint64_t secsz, |
1791 | uint64_t grainsz, | |
e594a3b1 LP |
1792 | uint64_t *ret) { |
1793 | ||
1794 | size_t n_partitions; | |
1795 | uint64_t offset, next = UINT64_MAX; | |
1796 | ||
1797 | assert(c); | |
1798 | assert(t); | |
1799 | assert(p); | |
1800 | ||
1801 | if (!fdisk_partition_has_end(p)) | |
1802 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1803 | ||
1804 | offset = fdisk_partition_get_end(p); | |
994b3031 LP |
1805 | assert(offset < UINT64_MAX / secsz); |
1806 | offset *= secsz; | |
e594a3b1 LP |
1807 | |
1808 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 1809 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 LP |
1810 | struct fdisk_partition *q; |
1811 | uint64_t start; | |
1812 | ||
1813 | q = fdisk_table_get_partition(t, i); | |
1814 | if (!q) | |
1815 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1816 | ||
1817 | if (fdisk_partition_is_used(q) <= 0) | |
1818 | continue; | |
1819 | ||
1820 | if (!fdisk_partition_has_start(q)) | |
1821 | continue; | |
1822 | ||
1823 | start = fdisk_partition_get_start(q); | |
994b3031 LP |
1824 | assert(start < UINT64_MAX / secsz); |
1825 | start *= secsz; | |
e594a3b1 LP |
1826 | |
1827 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1828 | next = start; | |
1829 | } | |
1830 | ||
1831 | if (next == UINT64_MAX) { | |
1832 | /* No later partition? In that case check the end of the usable area */ | |
1833 | next = fdisk_get_last_lba(c); | |
1834 | assert(next < UINT64_MAX); | |
1835 | next++; /* The last LBA is one sector before the end */ | |
1836 | ||
994b3031 LP |
1837 | assert(next < UINT64_MAX / secsz); |
1838 | next *= secsz; | |
e594a3b1 LP |
1839 | |
1840 | if (offset > next) | |
1841 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1842 | } | |
1843 | ||
1844 | assert(next >= offset); | |
994b3031 LP |
1845 | offset = round_up_size(offset, grainsz); |
1846 | next = round_down_size(next, grainsz); | |
e594a3b1 | 1847 | |
a6f44d61 | 1848 | *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */ |
e594a3b1 LP |
1849 | return 0; |
1850 | } | |
1851 | ||
1852 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { | |
1853 | _cleanup_free_ char *ids = NULL; | |
1854 | int r; | |
1855 | ||
1856 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
1857 | return -EINVAL; | |
1858 | ||
b7416360 | 1859 | ids = new(char, SD_ID128_UUID_STRING_MAX); |
e594a3b1 LP |
1860 | if (!ids) |
1861 | return -ENOMEM; | |
1862 | ||
b7416360 | 1863 | r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids)); |
e594a3b1 LP |
1864 | if (r < 0) |
1865 | return r; | |
1866 | ||
1867 | TAKE_PTR(ids); | |
1868 | return 0; | |
1869 | } | |
1870 | ||
1871 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
1872 | int r; | |
1873 | ||
1874 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
1875 | if (r < 0) | |
1876 | return r; | |
1877 | ||
1878 | r = fdisk_set_disklabel_id(c); | |
1879 | if (r < 0) | |
1880 | return r; | |
1881 | ||
1882 | return fdisk_set_ask(c, NULL, NULL); | |
1883 | } | |
1884 | ||
53171c04 | 1885 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 | 1886 | union { |
ade99252 | 1887 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
1888 | sd_id128_t id; |
1889 | } result; | |
1890 | ||
53171c04 | 1891 | assert(token); |
e594a3b1 LP |
1892 | assert(ret); |
1893 | ||
53171c04 LP |
1894 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
1895 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
1896 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
1897 | * the machine ID we don't want to leak. */ | |
e594a3b1 | 1898 | |
ade99252 | 1899 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md); |
e594a3b1 LP |
1900 | |
1901 | /* Take the first half, mark it as v4 UUID */ | |
1902 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
1903 | *ret = id128_make_v4_uuid(result.id); | |
1904 | return 0; | |
1905 | } | |
1906 | ||
a26f4a49 LP |
1907 | static int context_load_partition_table( |
1908 | Context *context, | |
1909 | const char *node, | |
1910 | int *backing_fd) { | |
1911 | ||
e594a3b1 LP |
1912 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
1913 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
1914 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
1915 | _cleanup_free_ char *disk_uuid_string = NULL; | |
1916 | bool from_scratch = false; | |
1917 | sd_id128_t disk_uuid; | |
1918 | size_t n_partitions; | |
994b3031 LP |
1919 | unsigned long secsz; |
1920 | uint64_t grainsz; | |
e594a3b1 LP |
1921 | int r; |
1922 | ||
1923 | assert(context); | |
1924 | assert(node); | |
a26f4a49 | 1925 | assert(backing_fd); |
170c9823 LP |
1926 | assert(!context->fdisk_context); |
1927 | assert(!context->free_areas); | |
1928 | assert(context->start == UINT64_MAX); | |
1929 | assert(context->end == UINT64_MAX); | |
1930 | assert(context->total == UINT64_MAX); | |
e594a3b1 LP |
1931 | |
1932 | c = fdisk_new_context(); | |
1933 | if (!c) | |
1934 | return log_oom(); | |
1935 | ||
a26f4a49 LP |
1936 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
1937 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
1938 | if (*backing_fd < 0) | |
1939 | r = fdisk_assign_device(c, node, arg_dry_run); | |
ddb6eeaf LP |
1940 | else |
1941 | r = fdisk_assign_device(c, FORMAT_PROC_FD_PATH(*backing_fd), arg_dry_run); | |
170c9823 LP |
1942 | if (r == -EINVAL && arg_size_auto) { |
1943 | struct stat st; | |
1944 | ||
1945 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
1946 | * it if automatic sizing is requested. */ | |
1947 | ||
1948 | if (*backing_fd < 0) | |
1949 | r = stat(node, &st); | |
1950 | else | |
1951 | r = fstat(*backing_fd, &st); | |
1952 | if (r < 0) | |
1953 | return log_error_errno(errno, "Failed to stat block device '%s': %m", node); | |
1954 | ||
994b3031 LP |
1955 | if (S_ISREG(st.st_mode) && st.st_size == 0) { |
1956 | /* User the fallback values if we have no better idea */ | |
1957 | context->sector_size = 512; | |
1958 | context->grain_size = 4096; | |
170c9823 | 1959 | return /* from_scratch = */ true; |
994b3031 | 1960 | } |
170c9823 LP |
1961 | |
1962 | r = -EINVAL; | |
1963 | } | |
e594a3b1 | 1964 | if (r < 0) |
a26f4a49 LP |
1965 | return log_error_errno(r, "Failed to open device '%s': %m", node); |
1966 | ||
1967 | if (*backing_fd < 0) { | |
1968 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ | |
38f81e93 | 1969 | *backing_fd = fd_reopen(fdisk_get_devfd(c), O_RDONLY|O_CLOEXEC); |
a26f4a49 | 1970 | if (*backing_fd < 0) |
38f81e93 | 1971 | return log_error_errno(*backing_fd, "Failed to duplicate fdisk fd: %m"); |
e594a3b1 | 1972 | |
25baae50 DDM |
1973 | /* Tell udev not to interfere while we are processing the device */ |
1974 | if (flock(*backing_fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
1975 | return log_error_errno(errno, "Failed to lock block device: %m"); | |
1976 | } | |
e594a3b1 | 1977 | |
994b3031 LP |
1978 | /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the |
1979 | * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use | |
1980 | * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean | |
1981 | * the same thing universally. Also note that regardless what kind of sector size is in use we'll | |
1982 | * place partitions at multiples of 4K. */ | |
1983 | secsz = fdisk_get_sector_size(c); | |
1984 | ||
1985 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
983ce0b5 LP |
1986 | if (secsz < 512 || !ISPOWEROF2(secsz)) |
1987 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
994b3031 LP |
1988 | |
1989 | /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or | |
1990 | * larger */ | |
1991 | grainsz = secsz < 4096 ? 4096 : secsz; | |
1992 | ||
1993 | log_debug("Sector size of device is %lu bytes. Using grain size of %" PRIu64 ".", secsz, grainsz); | |
1994 | ||
e594a3b1 LP |
1995 | switch (arg_empty) { |
1996 | ||
1997 | case EMPTY_REFUSE: | |
1998 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
1999 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
2000 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", node); | |
2001 | ||
2002 | break; | |
2003 | ||
2004 | case EMPTY_REQUIRE: | |
2005 | /* Require an empty disk, refuse any existing partition table */ | |
2006 | r = fdisk_has_label(c); | |
2007 | if (r < 0) | |
2008 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
2009 | if (r > 0) | |
2010 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", node); | |
2011 | ||
2012 | from_scratch = true; | |
2013 | break; | |
2014 | ||
2015 | case EMPTY_ALLOW: | |
2016 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
2017 | r = fdisk_has_label(c); | |
2018 | if (r < 0) | |
2019 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
2020 | if (r > 0) { | |
2021 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
2022 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", node); | |
2023 | } else | |
2024 | from_scratch = true; | |
2025 | ||
2026 | break; | |
2027 | ||
2028 | case EMPTY_FORCE: | |
a26f4a49 | 2029 | case EMPTY_CREATE: |
e594a3b1 LP |
2030 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
2031 | from_scratch = true; | |
2032 | break; | |
2033 | } | |
2034 | ||
2035 | if (from_scratch) { | |
e594a3b1 LP |
2036 | r = fdisk_create_disklabel(c, "gpt"); |
2037 | if (r < 0) | |
2038 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
2039 | ||
53171c04 | 2040 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2041 | if (r < 0) |
2042 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2043 | ||
2044 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
2045 | if (r < 0) | |
2046 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2047 | ||
2048 | goto add_initial_free_area; | |
2049 | } | |
2050 | ||
2051 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
2052 | if (r < 0) | |
2053 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
2054 | ||
2055 | r = sd_id128_from_string(disk_uuid_string, &disk_uuid); | |
2056 | if (r < 0) | |
2057 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
2058 | ||
2059 | if (sd_id128_is_null(disk_uuid)) { | |
53171c04 | 2060 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2061 | if (r < 0) |
2062 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2063 | ||
2064 | r = fdisk_set_disklabel_id(c); | |
2065 | if (r < 0) | |
2066 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2067 | } | |
2068 | ||
2069 | r = fdisk_get_partitions(c, &t); | |
2070 | if (r < 0) | |
2071 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
2072 | ||
2073 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 2074 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 | 2075 | _cleanup_free_ char *label_copy = NULL; |
03677889 | 2076 | Partition *last = NULL; |
e594a3b1 LP |
2077 | struct fdisk_partition *p; |
2078 | struct fdisk_parttype *pt; | |
2079 | const char *pts, *ids, *label; | |
2080 | uint64_t sz, start; | |
2081 | bool found = false; | |
2082 | sd_id128_t ptid, id; | |
2083 | size_t partno; | |
2084 | ||
2085 | p = fdisk_table_get_partition(t, i); | |
2086 | if (!p) | |
2087 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
2088 | ||
2089 | if (fdisk_partition_is_used(p) <= 0) | |
2090 | continue; | |
2091 | ||
2092 | if (fdisk_partition_has_start(p) <= 0 || | |
2093 | fdisk_partition_has_size(p) <= 0 || | |
2094 | fdisk_partition_has_partno(p) <= 0) | |
2095 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
2096 | ||
2097 | pt = fdisk_partition_get_type(p); | |
2098 | if (!pt) | |
2099 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition: %m"); | |
2100 | ||
2101 | pts = fdisk_parttype_get_string(pt); | |
2102 | if (!pts) | |
2103 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition as string: %m"); | |
2104 | ||
2105 | r = sd_id128_from_string(pts, &ptid); | |
2106 | if (r < 0) | |
2107 | return log_error_errno(r, "Failed to parse partition type UUID %s: %m", pts); | |
2108 | ||
2109 | ids = fdisk_partition_get_uuid(p); | |
2110 | if (!ids) | |
2111 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a UUID."); | |
2112 | ||
2113 | r = sd_id128_from_string(ids, &id); | |
2114 | if (r < 0) | |
2115 | return log_error_errno(r, "Failed to parse partition UUID %s: %m", ids); | |
2116 | ||
2117 | label = fdisk_partition_get_name(p); | |
2118 | if (!isempty(label)) { | |
2119 | label_copy = strdup(label); | |
2120 | if (!label_copy) | |
2121 | return log_oom(); | |
2122 | } | |
2123 | ||
2124 | sz = fdisk_partition_get_size(p); | |
ac33e147 | 2125 | assert(sz <= UINT64_MAX/secsz); |
994b3031 | 2126 | sz *= secsz; |
e594a3b1 LP |
2127 | |
2128 | start = fdisk_partition_get_start(p); | |
ac33e147 | 2129 | assert(start <= UINT64_MAX/secsz); |
994b3031 | 2130 | start *= secsz; |
e594a3b1 LP |
2131 | |
2132 | partno = fdisk_partition_get_partno(p); | |
2133 | ||
2134 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
2135 | left_boundary = start; | |
2136 | ||
2137 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
2138 | * an existing one assigned yet. */ | |
2139 | LIST_FOREACH(partitions, pp, context->partitions) { | |
2140 | last = pp; | |
2141 | ||
22e932f4 | 2142 | if (!sd_id128_equal(pp->type.uuid, ptid)) |
e594a3b1 LP |
2143 | continue; |
2144 | ||
2145 | if (!pp->current_partition) { | |
2146 | pp->current_uuid = id; | |
2147 | pp->current_size = sz; | |
2148 | pp->offset = start; | |
2149 | pp->partno = partno; | |
2150 | pp->current_label = TAKE_PTR(label_copy); | |
2151 | ||
2152 | pp->current_partition = p; | |
2153 | fdisk_ref_partition(p); | |
2154 | ||
994b3031 | 2155 | r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding); |
e594a3b1 LP |
2156 | if (r < 0) |
2157 | return r; | |
2158 | ||
2159 | if (pp->current_padding > 0) { | |
2160 | r = context_add_free_area(context, pp->current_padding, pp); | |
2161 | if (r < 0) | |
2162 | return r; | |
2163 | } | |
2164 | ||
2165 | found = true; | |
2166 | break; | |
2167 | } | |
2168 | } | |
2169 | ||
2170 | /* If we have no matching definition, create a new one. */ | |
2171 | if (!found) { | |
2172 | _cleanup_(partition_freep) Partition *np = NULL; | |
2173 | ||
2174 | np = partition_new(); | |
2175 | if (!np) | |
2176 | return log_oom(); | |
2177 | ||
2178 | np->current_uuid = id; | |
22e932f4 | 2179 | np->type = gpt_partition_type_from_uuid(ptid); |
e594a3b1 LP |
2180 | np->current_size = sz; |
2181 | np->offset = start; | |
2182 | np->partno = partno; | |
2183 | np->current_label = TAKE_PTR(label_copy); | |
2184 | ||
2185 | np->current_partition = p; | |
2186 | fdisk_ref_partition(p); | |
2187 | ||
994b3031 | 2188 | r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding); |
e594a3b1 LP |
2189 | if (r < 0) |
2190 | return r; | |
2191 | ||
2192 | if (np->current_padding > 0) { | |
2193 | r = context_add_free_area(context, np->current_padding, np); | |
2194 | if (r < 0) | |
2195 | return r; | |
2196 | } | |
2197 | ||
2198 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
2199 | context->n_partitions++; | |
2200 | } | |
2201 | } | |
2202 | ||
2203 | add_initial_free_area: | |
2204 | nsectors = fdisk_get_nsectors(c); | |
994b3031 LP |
2205 | assert(nsectors <= UINT64_MAX/secsz); |
2206 | nsectors *= secsz; | |
e594a3b1 LP |
2207 | |
2208 | first_lba = fdisk_get_first_lba(c); | |
994b3031 LP |
2209 | assert(first_lba <= UINT64_MAX/secsz); |
2210 | first_lba *= secsz; | |
e594a3b1 LP |
2211 | |
2212 | last_lba = fdisk_get_last_lba(c); | |
2213 | assert(last_lba < UINT64_MAX); | |
2214 | last_lba++; | |
994b3031 LP |
2215 | assert(last_lba <= UINT64_MAX/secsz); |
2216 | last_lba *= secsz; | |
e594a3b1 LP |
2217 | |
2218 | assert(last_lba >= first_lba); | |
2219 | ||
2220 | if (left_boundary == UINT64_MAX) { | |
2221 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
2222 | ||
994b3031 LP |
2223 | first_lba = round_up_size(first_lba, grainsz); |
2224 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2225 | |
2226 | if (last_lba > first_lba) { | |
2227 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
2228 | if (r < 0) | |
2229 | return r; | |
2230 | } | |
2231 | } else { | |
2232 | /* Add space left of first partition */ | |
2233 | assert(left_boundary >= first_lba); | |
2234 | ||
994b3031 LP |
2235 | first_lba = round_up_size(first_lba, grainsz); |
2236 | left_boundary = round_down_size(left_boundary, grainsz); | |
2237 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2238 | |
2239 | if (left_boundary > first_lba) { | |
2240 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
2241 | if (r < 0) | |
2242 | return r; | |
2243 | } | |
2244 | } | |
2245 | ||
2246 | context->start = first_lba; | |
2247 | context->end = last_lba; | |
2248 | context->total = nsectors; | |
994b3031 LP |
2249 | context->sector_size = secsz; |
2250 | context->grain_size = grainsz; | |
e594a3b1 LP |
2251 | context->fdisk_context = TAKE_PTR(c); |
2252 | ||
2253 | return from_scratch; | |
2254 | } | |
2255 | ||
2256 | static void context_unload_partition_table(Context *context) { | |
e594a3b1 LP |
2257 | assert(context); |
2258 | ||
80a226b2 | 2259 | LIST_FOREACH(partitions, p, context->partitions) { |
e594a3b1 LP |
2260 | |
2261 | /* Entirely remove partitions that have no configuration */ | |
2262 | if (PARTITION_IS_FOREIGN(p)) { | |
2263 | partition_unlink_and_free(context, p); | |
2264 | continue; | |
2265 | } | |
2266 | ||
2267 | /* Otherwise drop all data we read off the block device and everything we might have | |
2268 | * calculated based on it */ | |
2269 | ||
2270 | p->dropped = false; | |
2271 | p->current_size = UINT64_MAX; | |
2272 | p->new_size = UINT64_MAX; | |
2273 | p->current_padding = UINT64_MAX; | |
2274 | p->new_padding = UINT64_MAX; | |
2275 | p->partno = UINT64_MAX; | |
2276 | p->offset = UINT64_MAX; | |
2277 | ||
2278 | if (p->current_partition) { | |
2279 | fdisk_unref_partition(p->current_partition); | |
2280 | p->current_partition = NULL; | |
2281 | } | |
2282 | ||
2283 | if (p->new_partition) { | |
2284 | fdisk_unref_partition(p->new_partition); | |
2285 | p->new_partition = NULL; | |
2286 | } | |
2287 | ||
2288 | p->padding_area = NULL; | |
2289 | p->allocated_to_area = NULL; | |
2290 | ||
15d43e30 LP |
2291 | p->current_uuid = SD_ID128_NULL; |
2292 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
2293 | } |
2294 | ||
2295 | context->start = UINT64_MAX; | |
2296 | context->end = UINT64_MAX; | |
2297 | context->total = UINT64_MAX; | |
2298 | ||
2299 | if (context->fdisk_context) { | |
2300 | fdisk_unref_context(context->fdisk_context); | |
2301 | context->fdisk_context = NULL; | |
2302 | } | |
2303 | ||
2304 | context_free_free_areas(context); | |
2305 | } | |
2306 | ||
2307 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
2b59bf51 | 2308 | char *t; |
e594a3b1 LP |
2309 | |
2310 | if (from != UINT64_MAX) { | |
2311 | if (from == to || to == UINT64_MAX) | |
2b59bf51 | 2312 | t = strdup(FORMAT_BYTES(from)); |
e594a3b1 | 2313 | else |
fc03e80c | 2314 | t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 | 2315 | } else if (to != UINT64_MAX) |
fc03e80c | 2316 | t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 LP |
2317 | else { |
2318 | *ret = NULL; | |
2319 | return 0; | |
2320 | } | |
2321 | ||
2b59bf51 | 2322 | if (!t) |
e594a3b1 LP |
2323 | return log_oom(); |
2324 | ||
2b59bf51 | 2325 | *ret = t; |
e594a3b1 LP |
2326 | return 1; |
2327 | } | |
2328 | ||
2329 | static const char *partition_label(const Partition *p) { | |
2330 | assert(p); | |
2331 | ||
2332 | if (p->new_label) | |
2333 | return p->new_label; | |
2334 | ||
2335 | if (p->current_label) | |
2336 | return p->current_label; | |
2337 | ||
22e932f4 | 2338 | return gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
2339 | } |
2340 | ||
2341 | static int context_dump_partitions(Context *context, const char *node) { | |
2342 | _cleanup_(table_unrefp) Table *t = NULL; | |
2343 | uint64_t sum_padding = 0, sum_size = 0; | |
e594a3b1 | 2344 | int r; |
b5b7879a DDM |
2345 | const size_t roothash_col = 13, dropin_files_col = 14; |
2346 | bool has_roothash = false, has_dropin_files = false; | |
e594a3b1 | 2347 | |
6a01ea4a | 2348 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
2349 | log_info("Empty partition table."); |
2350 | return 0; | |
2351 | } | |
2352 | ||
b5b7879a | 2353 | 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 |
2354 | if (!t) |
2355 | return log_oom(); | |
2356 | ||
a015fbe7 | 2357 | if (!DEBUG_LOGGING) { |
6a01ea4a | 2358 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 2359 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
b5b7879a | 2360 | (size_t) 8, (size_t) 11, roothash_col, dropin_files_col); |
a015fbe7 TH |
2361 | else |
2362 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
b5b7879a DDM |
2363 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 9, (size_t) 10, |
2364 | (size_t) 12, roothash_col, dropin_files_col); | |
a015fbe7 | 2365 | } |
e594a3b1 | 2366 | |
e594a3b1 | 2367 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
2368 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
2369 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
2370 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
2371 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
2372 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
2373 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
2374 | |
2375 | LIST_FOREACH(partitions, p, context->partitions) { | |
b5b7879a | 2376 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL; |
b7416360 | 2377 | char uuid_buffer[SD_ID128_UUID_STRING_MAX]; |
a015fbe7 | 2378 | const char *label, *activity = NULL; |
e594a3b1 LP |
2379 | |
2380 | if (p->dropped) | |
2381 | continue; | |
2382 | ||
a015fbe7 TH |
2383 | if (p->current_size == UINT64_MAX) |
2384 | activity = "create"; | |
2385 | else if (p->current_size != p->new_size) | |
2386 | activity = "resize"; | |
2387 | ||
e594a3b1 LP |
2388 | label = partition_label(p); |
2389 | partname = p->partno != UINT64_MAX ? fdisk_partname(node, p->partno+1) : NULL; | |
2390 | ||
2391 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2392 | if (r < 0) | |
2393 | return r; | |
2394 | ||
2395 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2396 | if (r < 0) | |
2397 | return r; | |
2398 | ||
2399 | if (p->new_size != UINT64_MAX) | |
2400 | sum_size += p->new_size; | |
2401 | if (p->new_padding != UINT64_MAX) | |
2402 | sum_padding += p->new_padding; | |
2403 | ||
b5b7879a DDM |
2404 | if (p->verity == VERITY_HASH) { |
2405 | rh = p->roothash ? hexmem(p->roothash, p->roothash_size) : strdup("TBD"); | |
2406 | if (!rh) | |
2407 | return log_oom(); | |
2408 | } | |
2409 | ||
e594a3b1 LP |
2410 | r = table_add_many( |
2411 | t, | |
22e932f4 | 2412 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type.uuid, uuid_buffer), |
be9ce018 | 2413 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
11749b61 | 2414 | TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid, |
e594a3b1 | 2415 | TABLE_STRING, p->definition_path ? basename(p->definition_path) : "-", TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), |
a015fbe7 | 2416 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2417 | TABLE_UINT64, p->offset, |
a015fbe7 | 2418 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2419 | TABLE_UINT64, p->new_size, |
2420 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2421 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2422 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2423 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
39fc0174 | 2424 | TABLE_STRING, activity ?: "unchanged", |
b5b7879a | 2425 | TABLE_STRING, rh, |
39fc0174 | 2426 | TABLE_STRV, p->drop_in_files); |
e594a3b1 | 2427 | if (r < 0) |
f987a261 | 2428 | return table_log_add_error(r); |
39fc0174 | 2429 | |
b5b7879a | 2430 | has_roothash = has_roothash || !isempty(rh); |
3ab44dbd | 2431 | has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files); |
e594a3b1 LP |
2432 | } |
2433 | ||
6a01ea4a | 2434 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2435 | const char *a, *b; |
2436 | ||
2b59bf51 ZJS |
2437 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size)); |
2438 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding)); | |
e594a3b1 LP |
2439 | |
2440 | r = table_add_many( | |
2441 | t, | |
2442 | TABLE_EMPTY, | |
2443 | TABLE_EMPTY, | |
2444 | TABLE_EMPTY, | |
2445 | TABLE_EMPTY, | |
2446 | TABLE_EMPTY, | |
2447 | TABLE_EMPTY, | |
2448 | TABLE_EMPTY, | |
a015fbe7 | 2449 | TABLE_EMPTY, |
e594a3b1 LP |
2450 | TABLE_STRING, a, |
2451 | TABLE_EMPTY, | |
a015fbe7 TH |
2452 | TABLE_EMPTY, |
2453 | TABLE_STRING, b, | |
39fc0174 | 2454 | TABLE_EMPTY, |
b5b7879a | 2455 | TABLE_EMPTY, |
a015fbe7 | 2456 | TABLE_EMPTY); |
e594a3b1 | 2457 | if (r < 0) |
f987a261 | 2458 | return table_log_add_error(r); |
e594a3b1 LP |
2459 | } |
2460 | ||
b5b7879a DDM |
2461 | if (!has_roothash) { |
2462 | r = table_hide_column_from_display(t, roothash_col); | |
2463 | if (r < 0) | |
2464 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2465 | } | |
2466 | ||
3ab44dbd | 2467 | if (!has_dropin_files) { |
39fc0174 RP |
2468 | r = table_hide_column_from_display(t, dropin_files_col); |
2469 | if (r < 0) | |
2470 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2471 | } | |
2472 | ||
896e678b | 2473 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2474 | } |
2475 | ||
2476 | static void context_bar_char_process_partition( | |
2477 | Context *context, | |
2478 | Partition *bar[], | |
2479 | size_t n, | |
2480 | Partition *p, | |
2481 | size_t *ret_start) { | |
2482 | ||
2483 | uint64_t from, to, total; | |
2484 | size_t x, y; | |
2485 | ||
2486 | assert(context); | |
2487 | assert(bar); | |
2488 | assert(n > 0); | |
2489 | assert(p); | |
2490 | ||
2491 | if (p->dropped) | |
2492 | return; | |
2493 | ||
2494 | assert(p->offset != UINT64_MAX); | |
2495 | assert(p->new_size != UINT64_MAX); | |
2496 | ||
2497 | from = p->offset; | |
2498 | to = from + p->new_size; | |
2499 | ||
d8daed09 TY |
2500 | assert(context->total > 0); |
2501 | total = context->total; | |
e594a3b1 | 2502 | |
d8daed09 TY |
2503 | assert(from <= total); |
2504 | x = from * n / total; | |
e594a3b1 | 2505 | |
d8daed09 TY |
2506 | assert(to <= total); |
2507 | y = to * n / total; | |
e594a3b1 LP |
2508 | |
2509 | assert(x <= y); | |
2510 | assert(y <= n); | |
2511 | ||
2512 | for (size_t i = x; i < y; i++) | |
2513 | bar[i] = p; | |
2514 | ||
2515 | *ret_start = x; | |
2516 | } | |
2517 | ||
2518 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2519 | _cleanup_free_ char *buf = NULL; | |
e594a3b1 LP |
2520 | const char *label; |
2521 | sd_id128_t id; | |
2522 | ||
2523 | /* Tries really hard to find a suitable description for this partition */ | |
2524 | ||
2525 | if (p->definition_path) { | |
2526 | buf = strdup(basename(p->definition_path)); | |
2527 | goto done; | |
2528 | } | |
2529 | ||
2530 | label = partition_label(p); | |
2531 | if (!isempty(label)) { | |
2532 | buf = strdup(label); | |
2533 | goto done; | |
2534 | } | |
2535 | ||
2536 | if (p->partno != UINT64_MAX) { | |
2537 | buf = fdisk_partname(node, p->partno+1); | |
2538 | goto done; | |
2539 | } | |
2540 | ||
11749b61 | 2541 | if (p->new_uuid_is_set) |
e594a3b1 LP |
2542 | id = p->new_uuid; |
2543 | else if (!sd_id128_is_null(p->current_uuid)) | |
2544 | id = p->current_uuid; | |
2545 | else | |
22e932f4 | 2546 | id = p->type.uuid; |
e594a3b1 | 2547 | |
b7416360 | 2548 | buf = strdup(SD_ID128_TO_UUID_STRING(id)); |
e594a3b1 LP |
2549 | |
2550 | done: | |
2551 | if (!buf) | |
2552 | return -ENOMEM; | |
2553 | ||
2554 | *ret = TAKE_PTR(buf); | |
2555 | return 0; | |
2556 | } | |
2557 | ||
2558 | static int context_dump_partition_bar(Context *context, const char *node) { | |
2559 | _cleanup_free_ Partition **bar = NULL; | |
2560 | _cleanup_free_ size_t *start_array = NULL; | |
03677889 | 2561 | Partition *last = NULL; |
e594a3b1 LP |
2562 | bool z = false; |
2563 | size_t c, j = 0; | |
2564 | ||
f391597c | 2565 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2566 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2567 | ||
2568 | bar = new0(Partition*, c); | |
2569 | if (!bar) | |
2570 | return log_oom(); | |
2571 | ||
2572 | start_array = new(size_t, context->n_partitions); | |
2573 | if (!start_array) | |
2574 | return log_oom(); | |
2575 | ||
2576 | LIST_FOREACH(partitions, p, context->partitions) | |
2577 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2578 | ||
2579 | putc(' ', stdout); | |
2580 | ||
2581 | for (size_t i = 0; i < c; i++) { | |
2582 | if (bar[i]) { | |
2583 | if (last != bar[i]) | |
2584 | z = !z; | |
2585 | ||
2586 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2587 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2588 | } else { | |
2589 | fputs(ansi_normal(), stdout); | |
2590 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2591 | } | |
2592 | ||
2593 | last = bar[i]; | |
2594 | } | |
2595 | ||
2596 | fputs(ansi_normal(), stdout); | |
2597 | putc('\n', stdout); | |
2598 | ||
2599 | for (size_t i = 0; i < context->n_partitions; i++) { | |
2600 | _cleanup_free_ char **line = NULL; | |
2601 | ||
2602 | line = new0(char*, c); | |
2603 | if (!line) | |
2604 | return log_oom(); | |
2605 | ||
2606 | j = 0; | |
2607 | LIST_FOREACH(partitions, p, context->partitions) { | |
2608 | _cleanup_free_ char *d = NULL; | |
2609 | j++; | |
2610 | ||
2611 | if (i < context->n_partitions - j) { | |
2612 | ||
2613 | if (line[start_array[j-1]]) { | |
2614 | const char *e; | |
2615 | ||
2616 | /* Upgrade final corner to the right with a branch to the right */ | |
2617 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
2618 | if (e) { | |
2619 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
2620 | if (!d) | |
2621 | return log_oom(); | |
2622 | } | |
2623 | } | |
2624 | ||
2625 | if (!d) { | |
2626 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
2627 | if (!d) | |
2628 | return log_oom(); | |
2629 | } | |
2630 | ||
2631 | } else if (i == context->n_partitions - j) { | |
2632 | _cleanup_free_ char *hint = NULL; | |
2633 | ||
2634 | (void) partition_hint(p, node, &hint); | |
2635 | ||
2636 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
2637 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
2638 | else | |
2639 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
2640 | ||
2641 | if (!d) | |
2642 | return log_oom(); | |
2643 | } | |
2644 | ||
2645 | if (d) | |
2646 | free_and_replace(line[start_array[j-1]], d); | |
2647 | } | |
2648 | ||
2649 | putc(' ', stdout); | |
2650 | ||
2651 | j = 0; | |
2652 | while (j < c) { | |
2653 | if (line[j]) { | |
2654 | fputs(line[j], stdout); | |
2655 | j += utf8_console_width(line[j]); | |
2656 | } else { | |
2657 | putc(' ', stdout); | |
2658 | j++; | |
2659 | } | |
2660 | } | |
2661 | ||
2662 | putc('\n', stdout); | |
2663 | ||
2664 | for (j = 0; j < c; j++) | |
2665 | free(line[j]); | |
2666 | } | |
2667 | ||
2668 | return 0; | |
2669 | } | |
2670 | ||
b5b7879a DDM |
2671 | static bool context_has_roothash(Context *context) { |
2672 | LIST_FOREACH(partitions, p, context->partitions) | |
2673 | if (p->roothash) | |
2674 | return true; | |
2675 | ||
2676 | return false; | |
2677 | } | |
2678 | ||
2679 | static int context_dump(Context *context, const char *node, bool late) { | |
a26d463d DDM |
2680 | int r; |
2681 | ||
2682 | assert(context); | |
2683 | assert(node); | |
2684 | ||
2685 | if (arg_pretty == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2686 | return 0; | |
2687 | ||
b5b7879a DDM |
2688 | /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes |
2689 | * in the output. */ | |
2690 | if (!late && !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2691 | return 0; | |
2692 | ||
2693 | /* If we're not outputting JSON, only dump again after doing all operations if there are any | |
2694 | * roothashes that we need to communicate to the user. */ | |
2695 | if (late && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !context_has_roothash(context)) | |
2696 | return 0; | |
2697 | ||
a26d463d DDM |
2698 | r = context_dump_partitions(context, node); |
2699 | if (r < 0) | |
2700 | return r; | |
2701 | ||
b5b7879a DDM |
2702 | /* Make sure we only write the partition bar once, even if we're writing the partition table twice to |
2703 | * communicate roothashes. */ | |
2704 | if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !late) { | |
a26d463d DDM |
2705 | putc('\n', stdout); |
2706 | ||
2707 | r = context_dump_partition_bar(context, node); | |
2708 | if (r < 0) | |
2709 | return r; | |
2710 | ||
2711 | putc('\n', stdout); | |
2712 | } | |
2713 | ||
2714 | fflush(stdout); | |
2715 | ||
2716 | return 0; | |
2717 | } | |
2718 | ||
2719 | ||
e594a3b1 | 2720 | static bool context_changed(const Context *context) { |
03677889 | 2721 | assert(context); |
e594a3b1 LP |
2722 | |
2723 | LIST_FOREACH(partitions, p, context->partitions) { | |
2724 | if (p->dropped) | |
2725 | continue; | |
2726 | ||
2727 | if (p->allocated_to_area) | |
2728 | return true; | |
2729 | ||
2730 | if (p->new_size != p->current_size) | |
2731 | return true; | |
2732 | } | |
2733 | ||
2734 | return false; | |
2735 | } | |
2736 | ||
81873a6b | 2737 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
2738 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
2739 | int r; | |
2740 | ||
2741 | assert(context); | |
81873a6b LP |
2742 | assert(offset != UINT64_MAX); |
2743 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
2744 | |
2745 | probe = blkid_new_probe(); | |
2746 | if (!probe) | |
2747 | return log_oom(); | |
2748 | ||
e594a3b1 | 2749 | errno = 0; |
81873a6b | 2750 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 2751 | if (r < 0) |
81873a6b | 2752 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
2753 | |
2754 | errno = 0; | |
2755 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
2756 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
2757 | blkid_probe_enable_partitions(probe, true) < 0 || | |
2758 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 2759 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
2760 | |
2761 | for (;;) { | |
2762 | errno = 0; | |
2763 | r = blkid_do_probe(probe); | |
2764 | if (r < 0) | |
2765 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
2766 | if (r > 0) | |
2767 | break; | |
2768 | ||
2769 | errno = 0; | |
2770 | if (blkid_do_wipe(probe, false) < 0) | |
2771 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
2772 | } | |
2773 | ||
e594a3b1 LP |
2774 | return 0; |
2775 | } | |
2776 | ||
81873a6b LP |
2777 | static int context_wipe_partition(Context *context, Partition *p) { |
2778 | int r; | |
2779 | ||
2780 | assert(context); | |
2781 | assert(p); | |
2782 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
2783 | ||
2784 | assert(p->offset != UINT64_MAX); | |
2785 | assert(p->new_size != UINT64_MAX); | |
2786 | ||
2787 | r = context_wipe_range(context, p->offset, p->new_size); | |
2788 | if (r < 0) | |
2789 | return r; | |
2790 | ||
2791 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
2792 | return 0; | |
2793 | } | |
2794 | ||
2795 | static int context_discard_range( | |
2796 | Context *context, | |
2797 | uint64_t offset, | |
2798 | uint64_t size) { | |
2799 | ||
e594a3b1 LP |
2800 | struct stat st; |
2801 | int fd; | |
2802 | ||
2803 | assert(context); | |
2804 | assert(offset != UINT64_MAX); | |
2805 | assert(size != UINT64_MAX); | |
2806 | ||
2807 | if (size <= 0) | |
2808 | return 0; | |
2809 | ||
a26f4a49 | 2810 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
2811 | |
2812 | if (fstat(fd, &st) < 0) | |
2813 | return -errno; | |
2814 | ||
2815 | if (S_ISREG(st.st_mode)) { | |
2816 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
2817 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2818 | return -EOPNOTSUPP; | |
2819 | ||
2820 | return -errno; | |
2821 | } | |
2822 | ||
2823 | return 1; | |
2824 | } | |
2825 | ||
2826 | if (S_ISBLK(st.st_mode)) { | |
2827 | uint64_t range[2], end; | |
2828 | ||
994b3031 | 2829 | range[0] = round_up_size(offset, context->sector_size); |
e594a3b1 | 2830 | |
55d38014 LP |
2831 | if (offset > UINT64_MAX - size) |
2832 | return -ERANGE; | |
2833 | ||
e594a3b1 LP |
2834 | end = offset + size; |
2835 | if (end <= range[0]) | |
2836 | return 0; | |
2837 | ||
994b3031 | 2838 | range[1] = round_down_size(end - range[0], context->sector_size); |
e594a3b1 LP |
2839 | if (range[1] <= 0) |
2840 | return 0; | |
2841 | ||
2842 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
2843 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2844 | return -EOPNOTSUPP; | |
2845 | ||
2846 | return -errno; | |
2847 | } | |
2848 | ||
2849 | return 1; | |
2850 | } | |
2851 | ||
2852 | return -EOPNOTSUPP; | |
2853 | } | |
2854 | ||
2855 | static int context_discard_partition(Context *context, Partition *p) { | |
2856 | int r; | |
2857 | ||
2858 | assert(context); | |
2859 | assert(p); | |
2860 | ||
2861 | assert(p->offset != UINT64_MAX); | |
2862 | assert(p->new_size != UINT64_MAX); | |
2863 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
2864 | ||
2865 | if (!arg_discard) | |
2866 | return 0; | |
2867 | ||
2868 | r = context_discard_range(context, p->offset, p->new_size); | |
2869 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 2870 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2871 | return 0; |
2872 | } | |
22163eb5 LP |
2873 | if (r == -EBUSY) { |
2874 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
2875 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
2876 | return 0; | |
2877 | } | |
e594a3b1 LP |
2878 | if (r == 0) { |
2879 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
2880 | return 0; | |
2881 | } | |
2882 | if (r < 0) | |
5b5109e2 | 2883 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2884 | |
5b5109e2 | 2885 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2886 | return 1; |
2887 | } | |
2888 | ||
2889 | static int context_discard_gap_after(Context *context, Partition *p) { | |
2890 | uint64_t gap, next = UINT64_MAX; | |
e594a3b1 LP |
2891 | int r; |
2892 | ||
2893 | assert(context); | |
2894 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
2895 | ||
5113436b AF |
2896 | if (!arg_discard) |
2897 | return 0; | |
2898 | ||
e594a3b1 LP |
2899 | if (p) |
2900 | gap = p->offset + p->new_size; | |
2901 | else | |
2902 | gap = context->start; | |
2903 | ||
2904 | LIST_FOREACH(partitions, q, context->partitions) { | |
2905 | if (q->dropped) | |
2906 | continue; | |
2907 | ||
2908 | assert(q->offset != UINT64_MAX); | |
2909 | assert(q->new_size != UINT64_MAX); | |
2910 | ||
2911 | if (q->offset < gap) | |
2912 | continue; | |
2913 | ||
2914 | if (next == UINT64_MAX || q->offset < next) | |
2915 | next = q->offset; | |
2916 | } | |
2917 | ||
2918 | if (next == UINT64_MAX) { | |
2919 | next = context->end; | |
2920 | if (gap > next) | |
2921 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
2922 | } | |
2923 | ||
2924 | assert(next >= gap); | |
2925 | r = context_discard_range(context, gap, next - gap); | |
2926 | if (r == -EOPNOTSUPP) { | |
2927 | if (p) | |
5b5109e2 | 2928 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2929 | else |
5b5109e2 | 2930 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
2931 | return 0; |
2932 | } | |
2933 | if (r == 0) /* Too short */ | |
2934 | return 0; | |
2935 | if (r < 0) { | |
2936 | if (p) | |
2937 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
2938 | else | |
2939 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
2940 | } | |
2941 | ||
2942 | if (p) | |
2943 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
2944 | else | |
2945 | log_info("Successfully discarded gap at beginning of disk."); | |
2946 | ||
2947 | return 0; | |
2948 | } | |
2949 | ||
2950 | static int context_wipe_and_discard(Context *context, bool from_scratch) { | |
e594a3b1 LP |
2951 | int r; |
2952 | ||
2953 | assert(context); | |
2954 | ||
2955 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if | |
2956 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
2957 | * device in one go early on. */ | |
2958 | ||
2959 | LIST_FOREACH(partitions, p, context->partitions) { | |
2960 | ||
2961 | if (!p->allocated_to_area) | |
2962 | continue; | |
2963 | ||
81d1098b DDM |
2964 | if (partition_skip(p)) |
2965 | continue; | |
2966 | ||
e594a3b1 LP |
2967 | r = context_wipe_partition(context, p); |
2968 | if (r < 0) | |
2969 | return r; | |
2970 | ||
2971 | if (!from_scratch) { | |
f0cb1b95 LP |
2972 | r = context_discard_partition(context, p); |
2973 | if (r < 0) | |
2974 | return r; | |
2975 | ||
e594a3b1 LP |
2976 | r = context_discard_gap_after(context, p); |
2977 | if (r < 0) | |
2978 | return r; | |
2979 | } | |
2980 | } | |
2981 | ||
2982 | if (!from_scratch) { | |
2983 | r = context_discard_gap_after(context, NULL); | |
2984 | if (r < 0) | |
2985 | return r; | |
2986 | } | |
2987 | ||
2988 | return 0; | |
2989 | } | |
2990 | ||
48a09a8f DDM |
2991 | static int partition_encrypt(Context *context, Partition *p, const char *node) { |
2992 | #if HAVE_LIBCRYPTSETUP && HAVE_CRYPT_SET_DATA_OFFSET && HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE && HAVE_CRYPT_REENCRYPT | |
2993 | struct crypt_params_luks2 luks_params = { | |
2994 | .label = strempty(p->new_label), | |
2995 | .sector_size = context->sector_size, | |
2996 | .data_device = node, | |
2997 | }; | |
2998 | struct crypt_params_reencrypt reencrypt_params = { | |
2999 | .mode = CRYPT_REENCRYPT_ENCRYPT, | |
3000 | .direction = CRYPT_REENCRYPT_BACKWARD, | |
3001 | .resilience = "datashift", | |
3002 | .data_shift = LUKS2_METADATA_SIZE / 512, | |
3003 | .luks2 = &luks_params, | |
3004 | .flags = CRYPT_REENCRYPT_INITIALIZE_ONLY|CRYPT_REENCRYPT_MOVE_FIRST_SEGMENT, | |
3005 | }; | |
0d12936d | 3006 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
48a09a8f DDM |
3007 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; |
3008 | _cleanup_fclose_ FILE *h = NULL; | |
3009 | _cleanup_free_ char *hp = NULL; | |
3010 | const char *passphrase = NULL; | |
3011 | size_t passphrase_size = 0; | |
b9df3536 LP |
3012 | sd_id128_t uuid; |
3013 | int r; | |
3014 | ||
994b3031 | 3015 | assert(context); |
b9df3536 | 3016 | assert(p); |
889914ef LP |
3017 | assert(p->encrypt != ENCRYPT_OFF); |
3018 | ||
0d12936d LP |
3019 | r = dlopen_cryptsetup(); |
3020 | if (r < 0) | |
3021 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
3022 | ||
b9df3536 LP |
3023 | r = derive_uuid(p->new_uuid, "luks-uuid", &uuid); |
3024 | if (r < 0) | |
3025 | return r; | |
3026 | ||
3027 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); | |
3028 | ||
48a09a8f DDM |
3029 | r = fopen_temporary(NULL, &h, &hp); |
3030 | if (r < 0) | |
3031 | return log_error_errno(r, "Failed to create temporary LUKS header file: %m"); | |
3032 | ||
3033 | /* Weird cryptsetup requirement which requires the header file to be the size of at least one sector. */ | |
3034 | r = posix_fallocate(fileno(h), 0, context->sector_size); | |
b9df3536 | 3035 | if (r < 0) |
48a09a8f DDM |
3036 | return log_error_errno(r, "Failed to grow temporary LUKS header file: %m"); |
3037 | ||
3038 | r = sym_crypt_init(&cd, hp); | |
3039 | if (r < 0) | |
3040 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", hp); | |
b9df3536 LP |
3041 | |
3042 | cryptsetup_enable_logging(cd); | |
3043 | ||
48a09a8f DDM |
3044 | /* Disable kernel keyring usage by libcryptsetup as a workaround for |
3045 | * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/273. This makes sure that we can do | |
3046 | * offline encryption even when repart is running in a container. */ | |
3047 | r = sym_crypt_volume_key_keyring(cd, false); | |
3048 | if (r < 0) | |
3049 | return log_error_errno(r, "Failed to disable kernel keyring: %m"); | |
3050 | ||
3051 | r = sym_crypt_metadata_locking(cd, false); | |
3052 | if (r < 0) | |
3053 | return log_error_errno(r, "Failed to disable metadata locking: %m"); | |
3054 | ||
3055 | r = sym_crypt_set_data_offset(cd, LUKS2_METADATA_SIZE / 512); | |
3056 | if (r < 0) | |
3057 | return log_error_errno(r, "Failed to set data offset: %m"); | |
3058 | ||
0d12936d | 3059 | r = sym_crypt_format(cd, |
b9df3536 LP |
3060 | CRYPT_LUKS2, |
3061 | "aes", | |
3062 | "xts-plain64", | |
b7416360 | 3063 | SD_ID128_TO_UUID_STRING(uuid), |
98e0456e DDM |
3064 | NULL, |
3065 | VOLUME_KEY_SIZE, | |
48a09a8f | 3066 | &luks_params); |
b9df3536 LP |
3067 | if (r < 0) |
3068 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
3069 | ||
889914ef LP |
3070 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
3071 | r = sym_crypt_keyslot_add_by_volume_key( | |
3072 | cd, | |
3073 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3074 | NULL, |
3075 | VOLUME_KEY_SIZE, | |
889914ef LP |
3076 | strempty(arg_key), |
3077 | arg_key_size); | |
3078 | if (r < 0) | |
3079 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
48a09a8f DDM |
3080 | |
3081 | passphrase = strempty(arg_key); | |
3082 | passphrase_size = arg_key_size; | |
889914ef LP |
3083 | } |
3084 | ||
3085 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
3086 | #if HAVE_TPM2 | |
889914ef LP |
3087 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; |
3088 | _cleanup_(erase_and_freep) void *secret = NULL; | |
02ef97cd | 3089 | _cleanup_free_ void *pubkey = NULL; |
889914ef | 3090 | _cleanup_free_ void *blob = NULL, *hash = NULL; |
02ef97cd | 3091 | size_t secret_size, blob_size, hash_size, pubkey_size = 0; |
2b92a672 | 3092 | uint16_t pcr_bank, primary_alg; |
889914ef LP |
3093 | int keyslot; |
3094 | ||
02ef97cd LP |
3095 | if (arg_tpm2_public_key_pcr_mask != 0) { |
3096 | r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey, &pubkey_size); | |
3097 | if (r < 0) { | |
3098 | if (arg_tpm2_public_key || r != -ENOENT) | |
3099 | return log_error_errno(r, "Failed read TPM PCR public key: %m"); | |
3100 | ||
3101 | log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m"); | |
3102 | arg_tpm2_public_key_pcr_mask = 0; | |
3103 | } | |
3104 | } | |
3105 | ||
d9b5841d LP |
3106 | r = tpm2_seal(arg_tpm2_device, |
3107 | arg_tpm2_pcr_mask, | |
02ef97cd LP |
3108 | pubkey, pubkey_size, |
3109 | arg_tpm2_public_key_pcr_mask, | |
d9b5841d LP |
3110 | /* pin= */ NULL, |
3111 | &secret, &secret_size, | |
3112 | &blob, &blob_size, | |
3113 | &hash, &hash_size, | |
3114 | &pcr_bank, | |
3115 | &primary_alg); | |
889914ef LP |
3116 | if (r < 0) |
3117 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
3118 | ||
3119 | r = base64mem(secret, secret_size, &base64_encoded); | |
3120 | if (r < 0) | |
3121 | return log_error_errno(r, "Failed to base64 encode secret key: %m"); | |
3122 | ||
3123 | r = cryptsetup_set_minimal_pbkdf(cd); | |
3124 | if (r < 0) | |
3125 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
3126 | ||
3127 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
3128 | cd, | |
3129 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3130 | NULL, |
3131 | VOLUME_KEY_SIZE, | |
889914ef LP |
3132 | base64_encoded, |
3133 | strlen(base64_encoded)); | |
3134 | if (keyslot < 0) | |
48a09a8f | 3135 | return log_error_errno(keyslot, "Failed to add new TPM2 key: %m"); |
889914ef | 3136 | |
f0f4fcae LP |
3137 | r = tpm2_make_luks2_json( |
3138 | keyslot, | |
3139 | arg_tpm2_pcr_mask, | |
3140 | pcr_bank, | |
02ef97cd LP |
3141 | pubkey, pubkey_size, |
3142 | arg_tpm2_public_key_pcr_mask, | |
f0f4fcae LP |
3143 | primary_alg, |
3144 | blob, blob_size, | |
3145 | hash, hash_size, | |
3146 | 0, | |
3147 | &v); | |
889914ef LP |
3148 | if (r < 0) |
3149 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
3150 | ||
3151 | r = cryptsetup_add_token_json(cd, v); | |
3152 | if (r < 0) | |
3153 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
48a09a8f DDM |
3154 | |
3155 | passphrase = base64_encoded; | |
3156 | passphrase_size = strlen(base64_encoded); | |
889914ef LP |
3157 | #else |
3158 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3159 | "Support for TPM2 enrollment not enabled."); | |
3160 | #endif | |
3161 | } | |
b9df3536 | 3162 | |
48a09a8f | 3163 | r = sym_crypt_reencrypt_init_by_passphrase( |
b9df3536 | 3164 | cd, |
98e0456e | 3165 | NULL, |
48a09a8f DDM |
3166 | passphrase, |
3167 | passphrase_size, | |
3168 | CRYPT_ANY_SLOT, | |
3169 | 0, | |
3170 | sym_crypt_get_cipher(cd), | |
3171 | sym_crypt_get_cipher_mode(cd), | |
3172 | &reencrypt_params); | |
b9df3536 | 3173 | if (r < 0) |
48a09a8f | 3174 | return log_error_errno(r, "Failed to prepare for reencryption: %m"); |
b9df3536 | 3175 | |
48a09a8f DDM |
3176 | /* crypt_reencrypt_init_by_passphrase() doesn't actually put the LUKS header at the front, we have |
3177 | * to do that ourselves. */ | |
b9df3536 | 3178 | |
48a09a8f DDM |
3179 | sym_crypt_free(cd); |
3180 | cd = NULL; | |
b9df3536 | 3181 | |
48a09a8f DDM |
3182 | r = sym_crypt_init(&cd, node); |
3183 | if (r < 0) | |
3184 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); | |
b9df3536 | 3185 | |
48a09a8f DDM |
3186 | r = sym_crypt_header_restore(cd, CRYPT_LUKS2, hp); |
3187 | if (r < 0) | |
3188 | return log_error_errno(r, "Failed to place new LUKS header at head of %s: %m", node); | |
b9df3536 | 3189 | |
48a09a8f | 3190 | reencrypt_params.flags &= ~CRYPT_REENCRYPT_INITIALIZE_ONLY; |
b9df3536 | 3191 | |
48a09a8f DDM |
3192 | r = sym_crypt_reencrypt_init_by_passphrase( |
3193 | cd, | |
3194 | NULL, | |
3195 | passphrase, | |
3196 | passphrase_size, | |
3197 | CRYPT_ANY_SLOT, | |
3198 | 0, | |
3199 | NULL, | |
3200 | NULL, | |
3201 | &reencrypt_params); | |
3202 | if (r < 0) | |
3203 | return log_error_errno(r, "Failed to load reencryption context: %m"); | |
b9df3536 | 3204 | |
48a09a8f | 3205 | r = sym_crypt_reencrypt(cd, NULL); |
b9df3536 | 3206 | if (r < 0) |
48a09a8f DDM |
3207 | return log_error_errno(r, "Failed to encrypt %s: %m", node); |
3208 | ||
3209 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
b9df3536 | 3210 | |
3dd8ae5c | 3211 | return 0; |
48a09a8f DDM |
3212 | #else |
3213 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3214 | "libcryptsetup is not supported or is missing required symbols, cannot encrypt: %m"); | |
3dd8ae5c | 3215 | #endif |
b9df3536 LP |
3216 | } |
3217 | ||
2b392d86 DDM |
3218 | static int partition_format_verity_hash( |
3219 | Context *context, | |
3220 | Partition *p, | |
3221 | const char *data_node) { | |
3222 | ||
3223 | #if HAVE_LIBCRYPTSETUP | |
3224 | Partition *dp; | |
3225 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; | |
3226 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; | |
3227 | _cleanup_free_ uint8_t *rh = NULL; | |
3228 | size_t rhs; | |
3229 | int whole_fd, r; | |
3230 | ||
3231 | assert(context); | |
3232 | assert(p); | |
3233 | assert(data_node); | |
3234 | ||
3235 | if (p->dropped) | |
3236 | return 0; | |
3237 | ||
3238 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3239 | return 0; | |
3240 | ||
3241 | if (p->verity != VERITY_HASH) | |
3242 | return 0; | |
3243 | ||
3244 | if (partition_skip(p)) | |
3245 | return 0; | |
3246 | ||
3247 | assert_se(dp = p->siblings[VERITY_DATA]); | |
3248 | assert(!dp->dropped); | |
3249 | ||
3250 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3251 | ||
3252 | r = dlopen_cryptsetup(); | |
3253 | if (r < 0) | |
3254 | return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m"); | |
3255 | ||
3256 | r = loop_device_make(whole_fd, O_RDWR, p->offset, p->new_size, 0, 0, LOCK_EX, &d); | |
3257 | if (r < 0) | |
3258 | return log_error_errno(r, | |
3259 | "Failed to make loopback device of verity hash partition %" PRIu64 ": %m", | |
3260 | p->partno); | |
3261 | ||
3262 | r = sym_crypt_init(&cd, d->node); | |
3263 | if (r < 0) | |
3264 | return log_error_errno(r, "Failed to allocate libcryptsetup context: %m"); | |
3265 | ||
3266 | r = sym_crypt_format( | |
3267 | cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, | |
3268 | &(struct crypt_params_verity){ | |
3269 | .data_device = data_node, | |
3270 | .flags = CRYPT_VERITY_CREATE_HASH, | |
3271 | .hash_name = "sha256", | |
3272 | .hash_type = 1, | |
3273 | .data_block_size = context->sector_size, | |
3274 | .hash_block_size = context->sector_size, | |
3275 | .salt_size = 32, | |
3276 | }); | |
3277 | if (r < 0) | |
3278 | return log_error_errno(r, "Failed to setup verity hash data: %m"); | |
3279 | ||
3280 | r = sym_crypt_get_volume_key_size(cd); | |
3281 | if (r < 0) | |
3282 | return log_error_errno(r, "Failed to determine verity root hash size: %m"); | |
3283 | rhs = (size_t) r; | |
3284 | ||
3285 | rh = malloc(rhs); | |
3286 | if (!rh) | |
3287 | return log_oom(); | |
3288 | ||
3289 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh, &rhs, NULL, 0); | |
3290 | if (r < 0) | |
3291 | return log_error_errno(r, "Failed to get verity root hash: %m"); | |
3292 | ||
3293 | assert(rhs >= sizeof(sd_id128_t) * 2); | |
3294 | ||
3295 | if (!dp->new_uuid_is_set) { | |
3296 | memcpy_safe(dp->new_uuid.bytes, rh, sizeof(sd_id128_t)); | |
3297 | dp->new_uuid_is_set = true; | |
3298 | } | |
3299 | ||
3300 | if (!p->new_uuid_is_set) { | |
3301 | memcpy_safe(p->new_uuid.bytes, rh + rhs - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
3302 | p->new_uuid_is_set = true; | |
3303 | } | |
3304 | ||
3305 | p->roothash = TAKE_PTR(rh); | |
3306 | p->roothash_size = rhs; | |
3307 | ||
3308 | return 0; | |
3309 | #else | |
3310 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes: %m"); | |
3311 | #endif | |
3312 | } | |
3313 | ||
4ecd39c5 DDM |
3314 | static int sign_verity_roothash( |
3315 | const uint8_t *roothash, | |
3316 | size_t roothash_size, | |
3317 | uint8_t **ret_signature, | |
3318 | size_t *ret_signature_size) { | |
3319 | ||
3320 | #if HAVE_OPENSSL | |
3321 | _cleanup_(BIO_freep) BIO *rb = NULL; | |
3322 | _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL; | |
3323 | _cleanup_free_ char *hex = NULL; | |
3324 | _cleanup_free_ uint8_t *sig = NULL; | |
3325 | int sigsz; | |
3326 | ||
3327 | assert(roothash); | |
3328 | assert(roothash_size > 0); | |
3329 | assert(ret_signature); | |
3330 | assert(ret_signature_size); | |
3331 | ||
3332 | hex = hexmem(roothash, roothash_size); | |
3333 | if (!hex) | |
3334 | return log_oom(); | |
3335 | ||
3336 | rb = BIO_new_mem_buf(hex, -1); | |
3337 | if (!rb) | |
3338 | return log_oom(); | |
3339 | ||
3340 | p7 = PKCS7_sign(arg_certificate, arg_private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY); | |
3341 | if (!p7) | |
3342 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s", | |
3343 | ERR_error_string(ERR_get_error(), NULL)); | |
3344 | ||
3345 | sigsz = i2d_PKCS7(p7, &sig); | |
3346 | if (sigsz < 0) | |
3347 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s", | |
3348 | ERR_error_string(ERR_get_error(), NULL)); | |
3349 | ||
3350 | *ret_signature = TAKE_PTR(sig); | |
3351 | *ret_signature_size = sigsz; | |
3352 | ||
3353 | return 0; | |
3354 | #else | |
3355 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot setup verity signature: %m"); | |
3356 | #endif | |
3357 | } | |
3358 | ||
3359 | static int partition_format_verity_sig(Context *context, Partition *p) { | |
3360 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
3361 | _cleanup_free_ uint8_t *sig = NULL; | |
3362 | _cleanup_free_ char *text = NULL; | |
3363 | Partition *hp; | |
3364 | uint8_t fp[X509_FINGERPRINT_SIZE]; | |
3365 | size_t sigsz = 0, padsz; /* avoid false maybe-uninitialized warning */ | |
3366 | int whole_fd, r; | |
3367 | ||
3368 | assert(p->verity == VERITY_SIG); | |
3369 | ||
3370 | if (p->dropped) | |
3371 | return 0; | |
3372 | ||
3373 | if (PARTITION_EXISTS(p)) | |
3374 | return 0; | |
3375 | ||
3376 | if (partition_skip(p)) | |
3377 | return 0; | |
3378 | ||
3379 | assert_se(hp = p->siblings[VERITY_HASH]); | |
3380 | assert(!hp->dropped); | |
3381 | ||
3382 | assert(arg_certificate); | |
3383 | ||
3384 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3385 | ||
3386 | r = sign_verity_roothash(hp->roothash, hp->roothash_size, &sig, &sigsz); | |
3387 | if (r < 0) | |
3388 | return r; | |
3389 | ||
3390 | r = x509_fingerprint(arg_certificate, fp); | |
3391 | if (r < 0) | |
3392 | return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m"); | |
3393 | ||
3394 | r = json_build(&v, | |
3395 | JSON_BUILD_OBJECT( | |
3396 | JSON_BUILD_PAIR("rootHash", JSON_BUILD_HEX(hp->roothash, hp->roothash_size)), | |
3397 | JSON_BUILD_PAIR( | |
3398 | "certificateFingerprint", | |
3399 | JSON_BUILD_HEX(fp, sizeof(fp)) | |
3400 | ), | |
3401 | JSON_BUILD_PAIR("signature", JSON_BUILD_BASE64(sig, sigsz)) | |
3402 | ) | |
3403 | ); | |
3404 | if (r < 0) | |
3405 | return log_error_errno(r, "Failed to build JSON object: %m"); | |
3406 | ||
3407 | r = json_variant_format(v, 0, &text); | |
3408 | if (r < 0) | |
3409 | return log_error_errno(r, "Failed to format JSON object: %m"); | |
3410 | ||
3411 | padsz = round_up_size(strlen(text), 4096); | |
3412 | assert_se(padsz <= p->new_size); | |
3413 | ||
3414 | r = strgrowpad0(&text, padsz); | |
3415 | if (r < 0) | |
3416 | return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(padsz)); | |
3417 | ||
3418 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3419 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3420 | ||
3421 | r = loop_write(whole_fd, text, padsz, /*do_poll=*/ false); | |
3422 | if (r < 0) | |
3423 | return log_error_errno(r, "Failed to write verity signature to partition: %m"); | |
3424 | ||
3425 | if (fsync(whole_fd) < 0) | |
3426 | return log_error_errno(errno, "Failed to synchronize verity signature JSON: %m"); | |
3427 | ||
3428 | return 0; | |
3429 | } | |
3430 | ||
757bc2e4 | 3431 | static int context_copy_blocks(Context *context) { |
b9df3536 | 3432 | int whole_fd = -1, r; |
757bc2e4 LP |
3433 | |
3434 | assert(context); | |
3435 | ||
3436 | /* Copy in file systems on the block level */ | |
3437 | ||
3438 | LIST_FOREACH(partitions, p, context->partitions) { | |
b9df3536 | 3439 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
b9df3536 | 3440 | int target_fd; |
757bc2e4 LP |
3441 | |
3442 | if (p->copy_blocks_fd < 0) | |
3443 | continue; | |
3444 | ||
3445 | if (p->dropped) | |
3446 | continue; | |
3447 | ||
3448 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
3449 | continue; | |
3450 | ||
81d1098b DDM |
3451 | if (partition_skip(p)) |
3452 | continue; | |
3453 | ||
757bc2e4 LP |
3454 | assert(p->new_size != UINT64_MAX); |
3455 | assert(p->copy_blocks_size != UINT64_MAX); | |
48a09a8f | 3456 | assert(p->new_size >= p->copy_blocks_size + (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
757bc2e4 | 3457 | |
b9df3536 LP |
3458 | if (whole_fd < 0) |
3459 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3460 | ||
889914ef | 3461 | if (p->encrypt != ENCRYPT_OFF) { |
fd83c98e | 3462 | r = loop_device_make(whole_fd, O_RDWR, p->offset, p->new_size, 0, 0, LOCK_EX, &d); |
b9df3536 LP |
3463 | if (r < 0) |
3464 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); | |
3465 | ||
48a09a8f | 3466 | target_fd = d->fd; |
695cfd53 | 3467 | } else { |
b9df3536 LP |
3468 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) |
3469 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3470 | ||
3471 | target_fd = whole_fd; | |
3472 | } | |
757bc2e4 | 3473 | |
2b59bf51 ZJS |
3474 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", |
3475 | p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno); | |
757bc2e4 | 3476 | |
8c467ee8 | 3477 | r = copy_bytes(p->copy_blocks_fd, target_fd, p->copy_blocks_size, COPY_REFLINK); |
757bc2e4 LP |
3478 | if (r < 0) |
3479 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
3480 | ||
889914ef | 3481 | if (p->encrypt != ENCRYPT_OFF) { |
48a09a8f | 3482 | r = partition_encrypt(context, p, d->node); |
b9df3536 LP |
3483 | if (r < 0) |
3484 | return r; | |
b9df3536 LP |
3485 | } |
3486 | ||
48a09a8f DDM |
3487 | if (fsync(target_fd) < 0) |
3488 | return log_error_errno(errno, "Failed to synchronize copied data blocks: %m"); | |
3489 | ||
757bc2e4 | 3490 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
2b392d86 DDM |
3491 | |
3492 | if (p->siblings[VERITY_HASH]) { | |
3493 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], d->node); | |
3494 | if (r < 0) | |
3495 | return r; | |
3496 | } | |
4ecd39c5 DDM |
3497 | |
3498 | if (p->siblings[VERITY_SIG]) { | |
3499 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); | |
3500 | if (r < 0) | |
3501 | return r; | |
3502 | } | |
757bc2e4 LP |
3503 | } |
3504 | ||
3505 | return 0; | |
3506 | } | |
3507 | ||
c0fad2d9 | 3508 | static int do_copy_files(Partition *p, const char *root, const Set *denylist) { |
e59678b2 | 3509 | |
8a794850 LP |
3510 | int r; |
3511 | ||
3512 | assert(p); | |
92cd7e7c | 3513 | assert(root); |
8a794850 LP |
3514 | |
3515 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
3516 | _cleanup_close_ int sfd = -1, pfd = -1, tfd = -1; | |
8a794850 | 3517 | |
fd1ca01a | 3518 | sfd = chase_symlinks_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL); |
8a794850 LP |
3519 | if (sfd < 0) |
3520 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
3521 | ||
3522 | r = fd_verify_regular(sfd); | |
3523 | if (r < 0) { | |
3524 | if (r != -EISDIR) | |
3525 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
3526 | ||
3527 | /* We are looking at a directory */ | |
fd1ca01a | 3528 | tfd = chase_symlinks_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3529 | if (tfd < 0) { |
f21a3a82 LP |
3530 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3531 | ||
8a794850 LP |
3532 | if (tfd != -ENOENT) |
3533 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
3534 | ||
f21a3a82 LP |
3535 | r = path_extract_filename(*target, &fn); |
3536 | if (r < 0) | |
3537 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3538 | ||
3539 | r = path_extract_directory(*target, &dn); | |
3540 | if (r < 0) | |
3541 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3542 | ||
92cd7e7c | 3543 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3544 | if (r < 0) |
3545 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
3546 | ||
fd1ca01a | 3547 | pfd = chase_symlinks_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 LP |
3548 | if (pfd < 0) |
3549 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
3550 | ||
652d9040 LP |
3551 | r = copy_tree_at( |
3552 | sfd, ".", | |
6020d00d | 3553 | pfd, fn, |
e59678b2 | 3554 | getuid(), getgid(), |
81427d0f | 3555 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS, |
c0fad2d9 | 3556 | denylist); |
8a794850 | 3557 | } else |
652d9040 LP |
3558 | r = copy_tree_at( |
3559 | sfd, ".", | |
3560 | tfd, ".", | |
e59678b2 | 3561 | getuid(), getgid(), |
81427d0f | 3562 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS, |
c0fad2d9 | 3563 | denylist); |
8a794850 | 3564 | if (r < 0) |
cf2ed23c DDM |
3565 | return log_error_errno(r, "Failed to copy '%s%s' to '%s%s': %m", |
3566 | strempty(arg_root), *source, strempty(root), *target); | |
8a794850 | 3567 | } else { |
f21a3a82 LP |
3568 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3569 | ||
8a794850 LP |
3570 | /* We are looking at a regular file */ |
3571 | ||
f21a3a82 LP |
3572 | r = path_extract_filename(*target, &fn); |
3573 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
3574 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
3575 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
3576 | if (r < 0) | |
3577 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3578 | ||
3579 | r = path_extract_directory(*target, &dn); | |
3580 | if (r < 0) | |
3581 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3582 | ||
92cd7e7c | 3583 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3584 | if (r < 0) |
3585 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
3586 | ||
fd1ca01a | 3587 | pfd = chase_symlinks_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3588 | if (pfd < 0) |
a0ff9971 | 3589 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 3590 | |
e2819067 | 3591 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
3592 | if (tfd < 0) |
3593 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
3594 | ||
81427d0f | 3595 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_SIGINT); |
8a794850 | 3596 | if (r < 0) |
554a2b64 | 3597 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 3598 | |
23e026de | 3599 | (void) copy_xattr(sfd, tfd, COPY_ALL_XATTRS); |
8a794850 LP |
3600 | (void) copy_access(sfd, tfd); |
3601 | (void) copy_times(sfd, tfd, 0); | |
3602 | } | |
3603 | } | |
3604 | ||
3605 | return 0; | |
3606 | } | |
3607 | ||
92cd7e7c | 3608 | static int do_make_directories(Partition *p, const char *root) { |
d83d8048 LP |
3609 | int r; |
3610 | ||
3611 | assert(p); | |
92cd7e7c | 3612 | assert(root); |
d83d8048 LP |
3613 | |
3614 | STRV_FOREACH(d, p->make_directories) { | |
3615 | ||
e59678b2 | 3616 | r = mkdir_p_root(root, *d, getuid(), getgid(), 0755); |
d83d8048 LP |
3617 | if (r < 0) |
3618 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
3619 | } | |
3620 | ||
3621 | return 0; | |
3622 | } | |
3623 | ||
e59678b2 | 3624 | static int partition_populate_directory(Partition *p, const Set *denylist, char **ret) { |
95bfd3cd DDM |
3625 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
3626 | int r; | |
3627 | ||
e59678b2 | 3628 | assert(ret); |
95bfd3cd | 3629 | |
2a99f964 DDM |
3630 | if ((strv_isempty(p->copy_files) && strv_isempty(p->make_directories))) { |
3631 | *ret = NULL; | |
3632 | return 0; | |
3633 | } | |
3634 | ||
95bfd3cd DDM |
3635 | r = mkdtemp_malloc("/var/tmp/repart-XXXXXX", &root); |
3636 | if (r < 0) | |
3637 | return log_error_errno(r, "Failed to create temporary directory: %m"); | |
3638 | ||
e59678b2 DDM |
3639 | /* Make sure everything is owned by the user running repart so that make_filesystem() can map the |
3640 | * user running repart to "root" in a user namespace to have the files owned by root in the final | |
3641 | * image. */ | |
3642 | ||
c0fad2d9 | 3643 | r = do_copy_files(p, root, denylist); |
95bfd3cd DDM |
3644 | if (r < 0) |
3645 | return r; | |
3646 | ||
3647 | r = do_make_directories(p, root); | |
3648 | if (r < 0) | |
3649 | return r; | |
3650 | ||
e59678b2 | 3651 | *ret = TAKE_PTR(root); |
95bfd3cd DDM |
3652 | return 0; |
3653 | } | |
3654 | ||
c0fad2d9 | 3655 | static int partition_populate_filesystem(Partition *p, const char *node, const Set *denylist) { |
7c175152 DDM |
3656 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
3657 | struct stat st; | |
8a794850 LP |
3658 | int r; |
3659 | ||
3660 | assert(p); | |
3661 | assert(node); | |
3662 | ||
d83d8048 | 3663 | if (strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
8a794850 LP |
3664 | return 0; |
3665 | ||
7c175152 DDM |
3666 | if (stat(node, &st) < 0) |
3667 | return log_error_errno(errno, "Failed to stat %s: %m", node); | |
3668 | ||
3669 | if (!S_ISBLK(st.st_mode)) { | |
3670 | r = loop_device_make_by_path(node, O_RDWR, 0, LOCK_EX, &d); | |
3671 | if (r < 0) | |
3672 | return log_error_errno(r, "Failed to make loopback device of %s: %m", node); | |
3673 | ||
3674 | node = d->node; | |
3675 | } | |
3676 | ||
a7f1f7d8 | 3677 | log_info("Populating %s filesystem with files.", p->format); |
8a794850 LP |
3678 | |
3679 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
3680 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
3681 | * detached mount propagation. */ | |
3682 | ||
3683 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
3684 | if (r < 0) | |
3685 | return r; | |
3686 | if (r == 0) { | |
3687 | static const char fs[] = "/run/systemd/mount-root"; | |
3688 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
3689 | ||
3690 | r = mkdir_p(fs, 0700); | |
3691 | if (r < 0) { | |
3692 | log_error_errno(r, "Failed to create mount point: %m"); | |
3693 | _exit(EXIT_FAILURE); | |
3694 | } | |
3695 | ||
511a8cfe | 3696 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
3697 | _exit(EXIT_FAILURE); |
3698 | ||
c0fad2d9 | 3699 | if (do_copy_files(p, fs, denylist) < 0) |
8a794850 LP |
3700 | _exit(EXIT_FAILURE); |
3701 | ||
d83d8048 LP |
3702 | if (do_make_directories(p, fs) < 0) |
3703 | _exit(EXIT_FAILURE); | |
3704 | ||
8a794850 LP |
3705 | r = syncfs_path(AT_FDCWD, fs); |
3706 | if (r < 0) { | |
3707 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
3708 | _exit(EXIT_FAILURE); | |
3709 | } | |
3710 | ||
3711 | _exit(EXIT_SUCCESS); | |
3712 | } | |
3713 | ||
a7f1f7d8 | 3714 | log_info("Successfully populated %s filesystem with files.", p->format); |
8a794850 LP |
3715 | return 0; |
3716 | } | |
3717 | ||
c0fad2d9 DDM |
3718 | static int make_copy_files_denylist(Context *context, Set **ret) { |
3719 | _cleanup_set_free_ Set *denylist = NULL; | |
3720 | int r; | |
3721 | ||
3722 | assert(context); | |
3723 | assert(ret); | |
3724 | ||
3725 | LIST_FOREACH(partitions, p, context->partitions) { | |
22e932f4 | 3726 | const char *sources = gpt_partition_type_mountpoint_nulstr(p->type); |
c0fad2d9 DDM |
3727 | if (!sources) |
3728 | continue; | |
3729 | ||
3730 | NULSTR_FOREACH(s, sources) { | |
3731 | _cleanup_free_ char *d = NULL; | |
3732 | struct stat st; | |
3733 | ||
3734 | r = chase_symlinks_and_stat(s, arg_root, CHASE_PREFIX_ROOT, NULL, &st, NULL); | |
3735 | if (r == -ENOENT) | |
3736 | continue; | |
3737 | if (r < 0) | |
3738 | return log_error_errno(r, "Failed to stat source file '%s%s': %m", | |
3739 | strempty(arg_root), s); | |
3740 | ||
3741 | if (set_contains(denylist, &st)) | |
3742 | continue; | |
3743 | ||
3744 | d = memdup(&st, sizeof(st)); | |
3745 | if (!d) | |
3746 | return log_oom(); | |
3747 | if (set_ensure_put(&denylist, &inode_hash_ops, d) < 0) | |
3748 | return log_oom(); | |
3749 | ||
3750 | TAKE_PTR(d); | |
3751 | } | |
3752 | } | |
3753 | ||
3754 | *ret = TAKE_PTR(denylist); | |
3755 | return 0; | |
3756 | } | |
3757 | ||
53171c04 | 3758 | static int context_mkfs(Context *context) { |
c0fad2d9 | 3759 | _cleanup_set_free_ Set *denylist = NULL; |
53171c04 LP |
3760 | int fd = -1, r; |
3761 | ||
3762 | assert(context); | |
3763 | ||
3764 | /* Make a file system */ | |
3765 | ||
c0fad2d9 DDM |
3766 | r = make_copy_files_denylist(context, &denylist); |
3767 | if (r < 0) | |
3768 | return r; | |
3769 | ||
53171c04 LP |
3770 | LIST_FOREACH(partitions, p, context->partitions) { |
3771 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; | |
e59678b2 | 3772 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
53171c04 LP |
3773 | |
3774 | if (p->dropped) | |
3775 | continue; | |
3776 | ||
3777 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3778 | continue; | |
3779 | ||
3780 | if (!p->format) | |
3781 | continue; | |
3782 | ||
c4a87b76 DDM |
3783 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
3784 | if (p->copy_blocks_fd >= 0) | |
3785 | continue; | |
3786 | ||
81d1098b DDM |
3787 | if (partition_skip(p)) |
3788 | continue; | |
3789 | ||
53171c04 LP |
3790 | assert(p->offset != UINT64_MAX); |
3791 | assert(p->new_size != UINT64_MAX); | |
48a09a8f | 3792 | assert(p->new_size >= (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
53171c04 LP |
3793 | |
3794 | if (fd < 0) | |
3795 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3796 | ||
3797 | /* Loopback block devices are not only useful to turn regular files into block devices, but | |
48a09a8f DDM |
3798 | * also to cut out sections of block devices into new block devices. If we're doing |
3799 | * encryption, we make sure we keep free space at the end which is required for cryptsetup's | |
3800 | * offline encryption. */ | |
53171c04 | 3801 | |
48a09a8f DDM |
3802 | r = loop_device_make(fd, O_RDWR, p->offset, |
3803 | p->new_size - (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0), | |
3804 | 0, 0, LOCK_EX, &d); | |
53171c04 | 3805 | if (r < 0) |
5b5109e2 | 3806 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); |
53171c04 | 3807 | |
53171c04 LP |
3808 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
3809 | ||
95bfd3cd DDM |
3810 | /* Ideally, we populate filesystems using our own code after creating the filesystem to |
3811 | * ensure consistent handling of chattrs, xattrs and other similar things. However, when | |
eb43379c DDM |
3812 | * using read-only filesystems such as squashfs, we can't populate after creating the |
3813 | * filesystem because it's read-only, so instead we create a temporary root to use as the | |
3814 | * source tree when generating the read-only filesystem. */ | |
95bfd3cd | 3815 | |
59e2be46 | 3816 | if (mkfs_supports_root_option(p->format)) { |
e59678b2 | 3817 | r = partition_populate_directory(p, denylist, &root); |
143c3c08 DDM |
3818 | if (r < 0) |
3819 | return r; | |
3820 | } | |
95bfd3cd | 3821 | |
e59678b2 | 3822 | r = make_filesystem(d->node, p->format, strempty(p->new_label), root, p->fs_uuid, arg_discard); |
48a09a8f | 3823 | if (r < 0) |
53171c04 LP |
3824 | return r; |
3825 | ||
3826 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
3827 | ||
eb43379c | 3828 | /* Now, we can populate all the other filesystems that aren't read-only. */ |
59e2be46 | 3829 | if (!mkfs_supports_root_option(p->format)) { |
48a09a8f DDM |
3830 | r = partition_populate_filesystem(p, d->node, denylist); |
3831 | if (r < 0) | |
143c3c08 | 3832 | return r; |
b9df3536 LP |
3833 | } |
3834 | ||
889914ef | 3835 | if (p->encrypt != ENCRYPT_OFF) { |
48a09a8f | 3836 | r = loop_device_refresh_size(d, UINT64_MAX, p->new_size); |
b9df3536 | 3837 | if (r < 0) |
48a09a8f | 3838 | return log_error_errno(r, "Failed to refresh loopback device size: %m"); |
b9df3536 | 3839 | |
48a09a8f DDM |
3840 | r = partition_encrypt(context, p, d->node); |
3841 | if (r < 0) | |
3842 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
b9df3536 | 3843 | } |
8a794850 | 3844 | |
48a09a8f DDM |
3845 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and |
3846 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
3847 | * the disk. */ | |
3848 | ||
53171c04 LP |
3849 | r = loop_device_sync(d); |
3850 | if (r < 0) | |
3851 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
b5b7879a | 3852 | |
2b392d86 DDM |
3853 | if (p->siblings[VERITY_HASH]) { |
3854 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], d->node); | |
3855 | if (r < 0) | |
3856 | return r; | |
b5b7879a | 3857 | } |
4ecd39c5 DDM |
3858 | |
3859 | if (p->siblings[VERITY_SIG]) { | |
3860 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); | |
3861 | if (r < 0) | |
3862 | return r; | |
3863 | } | |
b5b7879a DDM |
3864 | } |
3865 | ||
3866 | return 0; | |
3867 | } | |
3868 | ||
b456191d DDM |
3869 | static int parse_x509_certificate(const char *certificate, size_t certificate_size, X509 **ret) { |
3870 | #if HAVE_OPENSSL | |
3871 | _cleanup_(X509_freep) X509 *cert = NULL; | |
3872 | _cleanup_(BIO_freep) BIO *cb = NULL; | |
3873 | ||
3874 | assert(certificate); | |
3875 | assert(certificate_size > 0); | |
3876 | assert(ret); | |
3877 | ||
3878 | cb = BIO_new_mem_buf(certificate, certificate_size); | |
3879 | if (!cb) | |
3880 | return log_oom(); | |
3881 | ||
3882 | cert = PEM_read_bio_X509(cb, NULL, NULL, NULL); | |
3883 | if (!cert) | |
3884 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Failed to parse X.509 certificate: %s", | |
3885 | ERR_error_string(ERR_get_error(), NULL)); | |
3886 | ||
3887 | if (ret) | |
3888 | *ret = TAKE_PTR(cert); | |
3889 | ||
3890 | return 0; | |
3891 | #else | |
3892 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse X509 certificate."); | |
3893 | #endif | |
3894 | } | |
3895 | ||
3896 | static int parse_private_key(const char *key, size_t key_size, EVP_PKEY **ret) { | |
3897 | #if HAVE_OPENSSL | |
3898 | _cleanup_(BIO_freep) BIO *kb = NULL; | |
3899 | _cleanup_(EVP_PKEY_freep) EVP_PKEY *pk = NULL; | |
3900 | ||
3901 | assert(key); | |
3902 | assert(key_size > 0); | |
3903 | assert(ret); | |
3904 | ||
3905 | kb = BIO_new_mem_buf(key, key_size); | |
3906 | if (!kb) | |
3907 | return log_oom(); | |
3908 | ||
3909 | pk = PEM_read_bio_PrivateKey(kb, NULL, NULL, NULL); | |
3910 | if (!pk) | |
3911 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to parse PEM private key: %s", | |
3912 | ERR_error_string(ERR_get_error(), NULL)); | |
3913 | ||
3914 | if (ret) | |
3915 | *ret = TAKE_PTR(pk); | |
3916 | ||
3917 | return 0; | |
3918 | #else | |
3919 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse private key."); | |
3920 | #endif | |
3921 | } | |
3922 | ||
e594a3b1 LP |
3923 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
3924 | struct { | |
3925 | sd_id128_t type_uuid; | |
3926 | uint64_t counter; | |
695cfd53 | 3927 | } _packed_ plaintext = {}; |
e594a3b1 | 3928 | union { |
ade99252 | 3929 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
3930 | sd_id128_t id; |
3931 | } result; | |
3932 | ||
3933 | uint64_t k = 0; | |
e594a3b1 LP |
3934 | int r; |
3935 | ||
3936 | assert(context); | |
3937 | assert(p); | |
3938 | assert(ret); | |
3939 | ||
3940 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
3941 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
3942 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
3943 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
3944 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
3945 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
3946 | * second and later partition of the same type) if we have more than one partition of the same | |
3947 | * time. Or in other words: | |
3948 | * | |
3949 | * With: | |
3950 | * SEED := /etc/machine-id | |
3951 | * | |
3952 | * If first partition instance of type TYPE_UUID: | |
3953 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
3954 | * | |
3955 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
3956 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
3957 | */ | |
3958 | ||
3959 | LIST_FOREACH(partitions, q, context->partitions) { | |
3960 | if (p == q) | |
3961 | break; | |
3962 | ||
22e932f4 | 3963 | if (!sd_id128_equal(p->type.uuid, q->type.uuid)) |
e594a3b1 LP |
3964 | continue; |
3965 | ||
3966 | k++; | |
3967 | } | |
3968 | ||
22e932f4 | 3969 | plaintext.type_uuid = p->type.uuid; |
e594a3b1 LP |
3970 | plaintext.counter = htole64(k); |
3971 | ||
ade99252 KK |
3972 | hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes), |
3973 | &plaintext, | |
3974 | k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
3975 | result.md); | |
e594a3b1 LP |
3976 | |
3977 | /* Take the first half, mark it as v4 UUID */ | |
3978 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
3979 | result.id = id128_make_v4_uuid(result.id); | |
3980 | ||
3981 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
3982 | LIST_FOREACH(partitions, q, context->partitions) { | |
3983 | if (p == q) | |
3984 | continue; | |
3985 | ||
580f48cc | 3986 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 3987 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
3988 | |
3989 | r = sd_id128_randomize(&result.id); | |
3990 | if (r < 0) | |
3991 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
3992 | ||
3993 | break; | |
3994 | } | |
3995 | } | |
3996 | ||
3997 | *ret = result.id; | |
3998 | return 0; | |
3999 | } | |
4000 | ||
4001 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
4002 | _cleanup_free_ char *label = NULL; | |
4003 | const char *prefix; | |
4004 | unsigned k = 1; | |
4005 | ||
4006 | assert(context); | |
4007 | assert(p); | |
4008 | assert(ret); | |
4009 | ||
22e932f4 | 4010 | prefix = gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
4011 | if (!prefix) |
4012 | prefix = "linux"; | |
4013 | ||
4014 | for (;;) { | |
4015 | const char *ll = label ?: prefix; | |
4016 | bool retry = false; | |
e594a3b1 LP |
4017 | |
4018 | LIST_FOREACH(partitions, q, context->partitions) { | |
4019 | if (p == q) | |
4020 | break; | |
4021 | ||
4022 | if (streq_ptr(ll, q->current_label) || | |
4023 | streq_ptr(ll, q->new_label)) { | |
4024 | retry = true; | |
4025 | break; | |
4026 | } | |
4027 | } | |
4028 | ||
4029 | if (!retry) | |
4030 | break; | |
4031 | ||
4032 | label = mfree(label); | |
e594a3b1 LP |
4033 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
4034 | return log_oom(); | |
4035 | } | |
4036 | ||
4037 | if (!label) { | |
4038 | label = strdup(prefix); | |
4039 | if (!label) | |
4040 | return log_oom(); | |
4041 | } | |
4042 | ||
4043 | *ret = TAKE_PTR(label); | |
4044 | return 0; | |
4045 | } | |
4046 | ||
4047 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
e594a3b1 LP |
4048 | int r; |
4049 | ||
4050 | assert(context); | |
4051 | ||
4052 | LIST_FOREACH(partitions, p, context->partitions) { | |
e594a3b1 LP |
4053 | /* Never touch foreign partitions */ |
4054 | if (PARTITION_IS_FOREIGN(p)) { | |
4055 | p->new_uuid = p->current_uuid; | |
4056 | ||
4057 | if (p->current_label) { | |
78eee6ce LP |
4058 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
4059 | if (r < 0) | |
4060 | return r; | |
e594a3b1 LP |
4061 | } |
4062 | ||
4063 | continue; | |
4064 | } | |
4065 | ||
4066 | if (!sd_id128_is_null(p->current_uuid)) | |
4067 | p->new_uuid = p->current_uuid; /* Never change initialized UUIDs */ | |
b456191d | 4068 | else if (!p->new_uuid_is_set && !IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) { |
12963533 | 4069 | /* Not explicitly set by user! */ |
e594a3b1 LP |
4070 | r = partition_acquire_uuid(context, p, &p->new_uuid); |
4071 | if (r < 0) | |
4072 | return r; | |
11749b61 DDM |
4073 | |
4074 | p->new_uuid_is_set = true; | |
e594a3b1 LP |
4075 | } |
4076 | ||
8bbbdfd7 DDM |
4077 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", |
4078 | * keyed off the partition UUID. */ | |
4079 | r = derive_uuid(p->new_uuid, "file-system-uuid", &p->fs_uuid); | |
4080 | if (r < 0) | |
4081 | return r; | |
4082 | ||
e594a3b1 | 4083 | if (!isempty(p->current_label)) { |
78eee6ce LP |
4084 | /* never change initialized labels */ |
4085 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
4086 | if (r < 0) | |
4087 | return r; | |
12963533 TH |
4088 | } else if (!p->new_label) { |
4089 | /* Not explicitly set by user! */ | |
4090 | ||
e594a3b1 LP |
4091 | r = partition_acquire_label(context, p, &p->new_label); |
4092 | if (r < 0) | |
4093 | return r; | |
4094 | } | |
4095 | } | |
4096 | ||
4097 | return 0; | |
4098 | } | |
4099 | ||
e73309c5 LP |
4100 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
4101 | _cleanup_free_ char *a = NULL; | |
4102 | ||
4103 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
4104 | uint64_t bit = UINT64_C(1) << i; | |
4105 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
4106 | ||
4107 | if (!FLAGS_SET(flags, bit)) | |
4108 | continue; | |
4109 | ||
4110 | xsprintf(buf, "%u", i); | |
4111 | if (!strextend_with_separator(&a, ",", buf)) | |
4112 | return -ENOMEM; | |
4113 | } | |
4114 | ||
4115 | return fdisk_partition_set_attrs(q, a); | |
4116 | } | |
4117 | ||
1c41c1dc LP |
4118 | static uint64_t partition_merge_flags(Partition *p) { |
4119 | uint64_t f; | |
4120 | ||
4121 | assert(p); | |
4122 | ||
4123 | f = p->gpt_flags; | |
4124 | ||
ff0771bf | 4125 | if (p->no_auto >= 0) { |
22e932f4 | 4126 | if (gpt_partition_type_knows_no_auto(p->type)) |
92e72028 | 4127 | SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto); |
ff0771bf | 4128 | else { |
b7416360 | 4129 | char buffer[SD_ID128_UUID_STRING_MAX]; |
ff0771bf LP |
4130 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", |
4131 | yes_no(p->no_auto), | |
22e932f4 | 4132 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
ff0771bf LP |
4133 | } |
4134 | } | |
4135 | ||
1c41c1dc | 4136 | if (p->read_only >= 0) { |
22e932f4 | 4137 | if (gpt_partition_type_knows_read_only(p->type)) |
92e72028 | 4138 | SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only); |
1c41c1dc | 4139 | else { |
b7416360 | 4140 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4141 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", |
4142 | yes_no(p->read_only), | |
22e932f4 | 4143 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4144 | } |
4145 | } | |
4146 | ||
4147 | if (p->growfs >= 0) { | |
22e932f4 | 4148 | if (gpt_partition_type_knows_growfs(p->type)) |
92e72028 | 4149 | SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs); |
1c41c1dc | 4150 | else { |
b7416360 | 4151 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4152 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", |
4153 | yes_no(p->growfs), | |
22e932f4 | 4154 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4155 | } |
4156 | } | |
4157 | ||
4158 | return f; | |
4159 | } | |
4160 | ||
f28d4f42 | 4161 | static int context_mangle_partitions(Context *context) { |
f28d4f42 | 4162 | int r; |
e594a3b1 LP |
4163 | |
4164 | assert(context); | |
4165 | ||
e594a3b1 LP |
4166 | LIST_FOREACH(partitions, p, context->partitions) { |
4167 | if (p->dropped) | |
4168 | continue; | |
4169 | ||
81d1098b DDM |
4170 | if (partition_skip(p)) |
4171 | continue; | |
4172 | ||
e594a3b1 LP |
4173 | assert(p->new_size != UINT64_MAX); |
4174 | assert(p->offset != UINT64_MAX); | |
4175 | assert(p->partno != UINT64_MAX); | |
4176 | ||
4177 | if (PARTITION_EXISTS(p)) { | |
4178 | bool changed = false; | |
4179 | ||
4180 | assert(p->current_partition); | |
4181 | ||
4182 | if (p->new_size != p->current_size) { | |
4183 | assert(p->new_size >= p->current_size); | |
994b3031 | 4184 | assert(p->new_size % context->sector_size == 0); |
e594a3b1 LP |
4185 | |
4186 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
4187 | if (r < 0) | |
4188 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4189 | ||
994b3031 | 4190 | r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size); |
e594a3b1 LP |
4191 | if (r < 0) |
4192 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4193 | ||
4194 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
4195 | changed = true; | |
4196 | } | |
4197 | ||
4198 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
b7416360 | 4199 | r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4200 | if (r < 0) |
4201 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4202 | ||
4203 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
4204 | changed = true; | |
4205 | } | |
4206 | ||
4207 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 4208 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
4209 | if (r < 0) |
4210 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4211 | ||
4212 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
4213 | changed = true; | |
4214 | } | |
4215 | ||
4216 | if (changed) { | |
4217 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
4218 | ||
4219 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
4220 | if (r < 0) | |
4221 | return log_error_errno(r, "Failed to update partition: %m"); | |
4222 | } | |
4223 | } else { | |
4224 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
4225 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
e594a3b1 LP |
4226 | |
4227 | assert(!p->new_partition); | |
994b3031 LP |
4228 | assert(p->offset % context->sector_size == 0); |
4229 | assert(p->new_size % context->sector_size == 0); | |
be9ce018 | 4230 | assert(p->new_label); |
e594a3b1 LP |
4231 | |
4232 | t = fdisk_new_parttype(); | |
4233 | if (!t) | |
4234 | return log_oom(); | |
4235 | ||
22e932f4 | 4236 | r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type.uuid)); |
e594a3b1 LP |
4237 | if (r < 0) |
4238 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
4239 | ||
4240 | q = fdisk_new_partition(); | |
4241 | if (!q) | |
4242 | return log_oom(); | |
4243 | ||
4244 | r = fdisk_partition_set_type(q, t); | |
4245 | if (r < 0) | |
4246 | return log_error_errno(r, "Failed to set partition type: %m"); | |
4247 | ||
4248 | r = fdisk_partition_size_explicit(q, true); | |
4249 | if (r < 0) | |
4250 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4251 | ||
994b3031 | 4252 | r = fdisk_partition_set_start(q, p->offset / context->sector_size); |
e594a3b1 LP |
4253 | if (r < 0) |
4254 | return log_error_errno(r, "Failed to position partition: %m"); | |
4255 | ||
994b3031 | 4256 | r = fdisk_partition_set_size(q, p->new_size / context->sector_size); |
e594a3b1 LP |
4257 | if (r < 0) |
4258 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4259 | ||
4260 | r = fdisk_partition_set_partno(q, p->partno); | |
4261 | if (r < 0) | |
4262 | return log_error_errno(r, "Failed to set partition number: %m"); | |
4263 | ||
b7416360 | 4264 | r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4265 | if (r < 0) |
4266 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4267 | ||
be9ce018 | 4268 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
4269 | if (r < 0) |
4270 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4271 | ||
ff0771bf | 4272 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 4273 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
4274 | if (r < 0) |
4275 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
4276 | ||
5b5109e2 | 4277 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
4278 | |
4279 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
4280 | if (r < 0) | |
4281 | return log_error_errno(r, "Failed to add partition: %m"); | |
4282 | ||
4283 | assert(!p->new_partition); | |
4284 | p->new_partition = TAKE_PTR(q); | |
4285 | } | |
4286 | } | |
4287 | ||
f28d4f42 LP |
4288 | return 0; |
4289 | } | |
4290 | ||
4cee8333 DDM |
4291 | static int split_name_printf(Partition *p) { |
4292 | assert(p); | |
4293 | ||
4294 | const Specifier table[] = { | |
22e932f4 DDM |
4295 | { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type.uuid) }, |
4296 | { 'T', specifier_id128, &p->type.uuid }, | |
4cee8333 DDM |
4297 | { 'U', specifier_id128, &p->new_uuid }, |
4298 | { 'n', specifier_uint64, &p->partno }, | |
4299 | ||
4300 | COMMON_SYSTEM_SPECIFIERS, | |
4301 | {} | |
4302 | }; | |
4303 | ||
4304 | return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, &p->split_name_resolved); | |
4305 | } | |
4306 | ||
4307 | static int split_name_resolve(Context *context) { | |
4308 | int r; | |
4309 | ||
4310 | LIST_FOREACH(partitions, p, context->partitions) { | |
4311 | if (p->dropped) | |
4312 | continue; | |
4313 | ||
4314 | if (!p->split_name_format) | |
4315 | continue; | |
4316 | ||
4317 | r = split_name_printf(p); | |
4318 | if (r < 0) | |
4319 | return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format); | |
4320 | } | |
4321 | ||
4322 | LIST_FOREACH(partitions, p, context->partitions) { | |
4323 | if (!p->split_name_resolved) | |
4324 | continue; | |
4325 | ||
4326 | LIST_FOREACH(partitions, q, context->partitions) { | |
4327 | if (p == q) | |
4328 | continue; | |
4329 | ||
4330 | if (!q->split_name_resolved) | |
4331 | continue; | |
4332 | ||
4333 | if (!streq(p->split_name_resolved, q->split_name_resolved)) | |
4334 | continue; | |
4335 | ||
4336 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
4337 | "%s and %s have the same resolved split name \"%s\", refusing", | |
4338 | p->definition_path, q->definition_path, p->split_name_resolved); | |
4339 | } | |
4340 | } | |
4341 | ||
4342 | return 0; | |
4343 | } | |
4344 | ||
4345 | static int split_node(const char *node, char **ret_base, char **ret_ext) { | |
4346 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
4347 | char *e; | |
4348 | int r; | |
4349 | ||
4350 | assert(node); | |
4351 | assert(ret_base); | |
4352 | assert(ret_ext); | |
4353 | ||
4354 | r = path_extract_filename(node, &base); | |
4355 | if (r == O_DIRECTORY || r == -EADDRNOTAVAIL) | |
4356 | return log_error_errno(r, "Device node %s cannot be a directory", arg_node); | |
4357 | if (r < 0) | |
4358 | return log_error_errno(r, "Failed to extract filename from %s: %m", arg_node); | |
4359 | ||
4360 | e = endswith(base, ".raw"); | |
4361 | if (e) { | |
4362 | ext = strdup(e); | |
4363 | if (!ext) | |
4364 | return log_oom(); | |
4365 | ||
4366 | *e = 0; | |
4367 | } | |
4368 | ||
4369 | *ret_base = TAKE_PTR(base); | |
4370 | *ret_ext = TAKE_PTR(ext); | |
4371 | ||
4372 | return 0; | |
4373 | } | |
4374 | ||
4375 | static int context_split(Context *context) { | |
4376 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
4377 | _cleanup_close_ int dir_fd = -1; | |
4378 | int fd = -1, r; | |
4379 | ||
4380 | if (!arg_split) | |
4381 | return 0; | |
4382 | ||
4383 | assert(context); | |
4384 | assert(arg_node); | |
4385 | ||
4386 | /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled | |
4387 | * in after they've been generated. */ | |
4388 | ||
4389 | r = split_name_resolve(context); | |
4390 | if (r < 0) | |
4391 | return r; | |
4392 | ||
4393 | r = split_node(arg_node, &base, &ext); | |
4394 | if (r < 0) | |
4395 | return r; | |
4396 | ||
4397 | dir_fd = r = open_parent(arg_node, O_PATH|O_CLOEXEC, 0); | |
4398 | if (r == -EDESTADDRREQ) | |
4399 | dir_fd = AT_FDCWD; | |
4400 | else if (r < 0) | |
4401 | return log_error_errno(r, "Failed to open parent directory of %s: %m", arg_node); | |
4402 | ||
4403 | LIST_FOREACH(partitions, p, context->partitions) { | |
4404 | _cleanup_free_ char *fname = NULL; | |
4405 | _cleanup_close_ int fdt = -1; | |
4406 | ||
4407 | if (p->dropped) | |
4408 | continue; | |
4409 | ||
4410 | if (!p->split_name_resolved) | |
4411 | continue; | |
4412 | ||
81d1098b DDM |
4413 | if (partition_skip(p)) |
4414 | continue; | |
4415 | ||
4cee8333 DDM |
4416 | fname = strjoin(base, ".", p->split_name_resolved, ext); |
4417 | if (!fname) | |
4418 | return log_oom(); | |
4419 | ||
4420 | fdt = openat(dir_fd, fname, O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL, 0666); | |
4421 | if (fdt < 0) | |
4422 | return log_error_errno(errno, "Failed to open %s: %m", fname); | |
4423 | ||
4424 | if (fd < 0) | |
4425 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
4426 | ||
4427 | if (lseek(fd, p->offset, SEEK_SET) < 0) | |
4428 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
4429 | ||
a673b056 | 4430 | r = copy_bytes(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES); |
4cee8333 DDM |
4431 | if (r < 0) |
4432 | return log_error_errno(r, "Failed to copy to split partition %s: %m", fname); | |
4433 | } | |
4434 | ||
4435 | return 0; | |
4436 | } | |
4437 | ||
f28d4f42 LP |
4438 | static int context_write_partition_table( |
4439 | Context *context, | |
4440 | const char *node, | |
4441 | bool from_scratch) { | |
4442 | ||
4443 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; | |
4444 | int capable, r; | |
4445 | ||
4446 | assert(context); | |
4447 | ||
f28d4f42 LP |
4448 | if (!from_scratch && !context_changed(context)) { |
4449 | log_info("No changes."); | |
4450 | return 0; | |
4451 | } | |
4452 | ||
4453 | if (arg_dry_run) { | |
4454 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
4455 | return 0; | |
4456 | } | |
4457 | ||
4458 | log_info("Applying changes."); | |
4459 | ||
4460 | if (from_scratch) { | |
81873a6b LP |
4461 | r = context_wipe_range(context, 0, context->total); |
4462 | if (r < 0) | |
4463 | return r; | |
4464 | ||
4465 | log_info("Wiped block device."); | |
4466 | ||
f28d4f42 LP |
4467 | r = context_discard_range(context, 0, context->total); |
4468 | if (r == -EOPNOTSUPP) | |
5b5109e2 | 4469 | log_info("Storage does not support discard, not discarding entire block device data."); |
f28d4f42 LP |
4470 | else if (r < 0) |
4471 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
4472 | else if (r > 0) | |
4473 | log_info("Discarded entire block device."); | |
4474 | } | |
4475 | ||
4476 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
4477 | if (r < 0) | |
4478 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
4479 | ||
4480 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
4481 | * gaps between partitions, just to be sure. */ | |
4482 | r = context_wipe_and_discard(context, from_scratch); | |
4483 | if (r < 0) | |
4484 | return r; | |
4485 | ||
4486 | r = context_copy_blocks(context); | |
4487 | if (r < 0) | |
4488 | return r; | |
4489 | ||
4490 | r = context_mkfs(context); | |
4491 | if (r < 0) | |
4492 | return r; | |
4493 | ||
4494 | r = context_mangle_partitions(context); | |
4495 | if (r < 0) | |
4496 | return r; | |
4497 | ||
e594a3b1 LP |
4498 | log_info("Writing new partition table."); |
4499 | ||
4500 | r = fdisk_write_disklabel(context->fdisk_context); | |
4501 | if (r < 0) | |
4502 | return log_error_errno(r, "Failed to write partition table: %m"); | |
4503 | ||
911ba624 | 4504 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
4505 | if (capable == -ENOTBLK) |
4506 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
4507 | else if (capable < 0) | |
911ba624 | 4508 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 4509 | else if (capable > 0) { |
e594a3b1 LP |
4510 | log_info("Telling kernel to reread partition table."); |
4511 | ||
4512 | if (from_scratch) | |
4513 | r = fdisk_reread_partition_table(context->fdisk_context); | |
4514 | else | |
4515 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
4516 | if (r < 0) | |
4517 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
4518 | } else | |
4519 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
4520 | ||
4521 | log_info("All done."); | |
4522 | ||
4523 | return 0; | |
4524 | } | |
4525 | ||
4526 | static int context_read_seed(Context *context, const char *root) { | |
4527 | int r; | |
4528 | ||
4529 | assert(context); | |
4530 | ||
4531 | if (!sd_id128_is_null(context->seed)) | |
4532 | return 0; | |
4533 | ||
4534 | if (!arg_randomize) { | |
4535 | _cleanup_close_ int fd = -1; | |
4536 | ||
4537 | fd = chase_symlinks_and_open("/etc/machine-id", root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC, NULL); | |
4538 | if (fd == -ENOENT) | |
4539 | log_info("No machine ID set, using randomized partition UUIDs."); | |
4540 | else if (fd < 0) | |
4541 | return log_error_errno(fd, "Failed to determine machine ID of image: %m"); | |
4542 | else { | |
448b782c | 4543 | r = id128_read_fd(fd, ID128_PLAIN_OR_UNINIT, &context->seed); |
e594a3b1 LP |
4544 | if (r == -ENOMEDIUM) |
4545 | log_info("No machine ID set, using randomized partition UUIDs."); | |
4546 | else if (r < 0) | |
4547 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
4548 | ||
4549 | return 0; | |
4550 | } | |
4551 | } | |
4552 | ||
4553 | r = sd_id128_randomize(&context->seed); | |
4554 | if (r < 0) | |
4555 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
4556 | ||
4557 | return 0; | |
4558 | } | |
4559 | ||
4560 | static int context_factory_reset(Context *context, bool from_scratch) { | |
e594a3b1 LP |
4561 | size_t n = 0; |
4562 | int r; | |
4563 | ||
4564 | assert(context); | |
4565 | ||
4566 | if (arg_factory_reset <= 0) | |
4567 | return 0; | |
4568 | ||
4569 | if (from_scratch) /* Nothing to reset if we start from scratch */ | |
4570 | return 0; | |
4571 | ||
4572 | if (arg_dry_run) { | |
4573 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
4574 | return 0; | |
4575 | } | |
4576 | ||
4577 | log_info("Applying factory reset."); | |
4578 | ||
4579 | LIST_FOREACH(partitions, p, context->partitions) { | |
4580 | ||
4581 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
4582 | continue; | |
4583 | ||
4584 | assert(p->partno != UINT64_MAX); | |
4585 | ||
4586 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
4587 | ||
4588 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
4589 | if (r < 0) | |
4590 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
4591 | ||
4592 | n++; | |
4593 | } | |
4594 | ||
4595 | if (n == 0) { | |
4596 | log_info("Factory reset requested, but no partitions to delete found."); | |
4597 | return 0; | |
4598 | } | |
4599 | ||
4600 | r = fdisk_write_disklabel(context->fdisk_context); | |
4601 | if (r < 0) | |
4602 | return log_error_errno(r, "Failed to write disk label: %m"); | |
4603 | ||
4604 | log_info("Successfully deleted %zu partitions.", n); | |
4605 | return 1; | |
4606 | } | |
4607 | ||
4608 | static int context_can_factory_reset(Context *context) { | |
e594a3b1 LP |
4609 | assert(context); |
4610 | ||
4611 | LIST_FOREACH(partitions, p, context->partitions) | |
4612 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
4613 | return true; | |
4614 | ||
4615 | return false; | |
4616 | } | |
4617 | ||
5c08da58 LP |
4618 | static int resolve_copy_blocks_auto_candidate( |
4619 | dev_t partition_devno, | |
22e932f4 | 4620 | GptPartitionType partition_type, |
5c08da58 LP |
4621 | dev_t restrict_devno, |
4622 | sd_id128_t *ret_uuid) { | |
4623 | ||
4624 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
5c08da58 | 4625 | _cleanup_close_ int fd = -1; |
ca822829 YW |
4626 | _cleanup_free_ char *p = NULL; |
4627 | const char *pttype, *t; | |
5c08da58 LP |
4628 | sd_id128_t pt_parsed, u; |
4629 | blkid_partition pp; | |
4630 | dev_t whole_devno; | |
4631 | blkid_partlist pl; | |
5c08da58 LP |
4632 | int r; |
4633 | ||
4634 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
4635 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
4636 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
4637 | * one of the two. */ | |
4638 | ||
4639 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
4640 | if (r < 0) | |
4641 | return log_error_errno( | |
4642 | r, | |
4643 | "Unable to determine containing block device of partition %u:%u: %m", | |
4644 | major(partition_devno), minor(partition_devno)); | |
4645 | ||
4646 | if (restrict_devno != (dev_t) -1 && | |
4647 | restrict_devno != whole_devno) | |
4648 | return log_error_errno( | |
4649 | SYNTHETIC_ERRNO(EPERM), | |
4650 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
4651 | major(partition_devno), minor(partition_devno), | |
4652 | major(restrict_devno), minor(restrict_devno)); | |
4653 | ||
ca822829 | 4654 | fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p); |
5c08da58 | 4655 | if (r < 0) |
ca822829 YW |
4656 | return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m", |
4657 | DEVNUM_FORMAT_VAL(whole_devno)); | |
5c08da58 LP |
4658 | |
4659 | b = blkid_new_probe(); | |
4660 | if (!b) | |
4661 | return log_oom(); | |
4662 | ||
4663 | errno = 0; | |
4664 | r = blkid_probe_set_device(b, fd, 0, 0); | |
4665 | if (r != 0) | |
4666 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
4667 | ||
4668 | (void) blkid_probe_enable_partitions(b, 1); | |
4669 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
4670 | ||
4671 | errno = 0; | |
4672 | r = blkid_do_safeprobe(b); | |
4673 | if (IN_SET(r, -2, 1)) { /* nothing found or ambiguous result */ | |
4674 | log_debug("Didn't find partition table on block device '%s'.", p); | |
4675 | return false; | |
4676 | } | |
4677 | if (r != 0) | |
4678 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
4679 | ||
4680 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
4681 | if (!streq_ptr(pttype, "gpt")) { | |
4682 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
4683 | return false; | |
4684 | } | |
4685 | ||
4686 | errno = 0; | |
4687 | pl = blkid_probe_get_partitions(b); | |
4688 | if (!pl) | |
4689 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
4690 | errno = 0; | |
4691 | ||
4692 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
4693 | if (!pp) { | |
4694 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
4695 | major(partition_devno), minor(partition_devno), p); | |
4696 | return false; | |
4697 | } | |
4698 | ||
4699 | t = blkid_partition_get_type_string(pp); | |
4700 | if (isempty(t)) { | |
4701 | log_debug("Partition %u:%u has no type on '%s'.", | |
4702 | major(partition_devno), minor(partition_devno), p); | |
4703 | return false; | |
4704 | } | |
4705 | ||
4706 | r = sd_id128_from_string(t, &pt_parsed); | |
4707 | if (r < 0) { | |
4708 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
4709 | return false; | |
4710 | } | |
4711 | ||
22e932f4 | 4712 | if (!sd_id128_equal(pt_parsed, partition_type.uuid)) { |
5c08da58 LP |
4713 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", |
4714 | major(partition_devno), minor(partition_devno), | |
22e932f4 | 4715 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type.uuid)); |
5c08da58 LP |
4716 | return false; |
4717 | } | |
4718 | ||
4719 | t = blkid_partition_get_uuid(pp); | |
4720 | if (isempty(t)) { | |
4721 | log_debug("Partition %u:%u has no UUID.", | |
4722 | major(partition_devno), minor(partition_devno)); | |
4723 | return false; | |
4724 | } | |
4725 | ||
4726 | r = sd_id128_from_string(t, &u); | |
4727 | if (r < 0) { | |
4728 | log_debug_errno(r, "Failed to parse partition UUID \"%s\": %m", t); | |
4729 | return false; | |
4730 | } | |
4731 | ||
4732 | log_debug("Automatically found partition %u:%u of right type " SD_ID128_FORMAT_STR ".", | |
4733 | major(partition_devno), minor(partition_devno), | |
4734 | SD_ID128_FORMAT_VAL(pt_parsed)); | |
4735 | ||
4736 | if (ret_uuid) | |
4737 | *ret_uuid = u; | |
4738 | ||
4739 | return true; | |
4740 | } | |
4741 | ||
4742 | static int find_backing_devno( | |
4743 | const char *path, | |
4744 | const char *root, | |
4745 | dev_t *ret) { | |
4746 | ||
4747 | _cleanup_free_ char *resolved = NULL; | |
4748 | int r; | |
4749 | ||
4750 | assert(path); | |
4751 | ||
4752 | r = chase_symlinks(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); | |
4753 | if (r < 0) | |
4754 | return r; | |
4755 | ||
4756 | r = path_is_mount_point(resolved, NULL, 0); | |
4757 | if (r < 0) | |
4758 | return r; | |
4759 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
4760 | return -ENOENT; | |
4761 | ||
4762 | r = get_block_device(resolved, ret); | |
4763 | if (r < 0) | |
4764 | return r; | |
4765 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
4766 | return -ENOENT; | |
4767 | ||
4768 | return 0; | |
4769 | } | |
4770 | ||
4771 | static int resolve_copy_blocks_auto( | |
22e932f4 | 4772 | GptPartitionType type, |
5c08da58 LP |
4773 | const char *root, |
4774 | dev_t restrict_devno, | |
1a037ba2 | 4775 | dev_t *ret_devno, |
5c08da58 LP |
4776 | sd_id128_t *ret_uuid) { |
4777 | ||
4778 | const char *try1 = NULL, *try2 = NULL; | |
4779 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
4780 | _cleanup_(closedirp) DIR *d = NULL; | |
4781 | sd_id128_t found_uuid = SD_ID128_NULL; | |
4782 | dev_t devno, found = 0; | |
4783 | int r; | |
4784 | ||
5c08da58 LP |
4785 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the |
4786 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
4787 | * and restrict block device references in the --image= case to loopback block device we set up. | |
4788 | * | |
4789 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
4790 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
4791 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
4792 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
4793 | ||
4794 | if (restrict_devno == 0) | |
4795 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
4796 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
4797 | ||
4798 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching | |
4799 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
4800 | * type matches. */ | |
4801 | ||
22e932f4 | 4802 | if (type.designator == PARTITION_ROOT) |
5c08da58 | 4803 | try1 = "/"; |
22e932f4 | 4804 | else if (type.designator == PARTITION_USR) |
5c08da58 | 4805 | try1 = "/usr/"; |
22e932f4 | 4806 | else if (type.designator == PARTITION_ROOT_VERITY) |
5c08da58 | 4807 | try1 = "/"; |
22e932f4 | 4808 | else if (type.designator == PARTITION_USR_VERITY) |
5c08da58 | 4809 | try1 = "/usr/"; |
22e932f4 | 4810 | else if (type.designator == PARTITION_ESP) { |
5c08da58 LP |
4811 | try1 = "/efi/"; |
4812 | try2 = "/boot/"; | |
22e932f4 | 4813 | } else if (type.designator == PARTITION_XBOOTLDR) |
5c08da58 LP |
4814 | try1 = "/boot/"; |
4815 | else | |
4816 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
4817 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
22e932f4 | 4818 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
4819 | |
4820 | r = find_backing_devno(try1, root, &devno); | |
4821 | if (r == -ENOENT && try2) | |
4822 | r = find_backing_devno(try2, root, &devno); | |
4823 | if (r < 0) | |
4824 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
22e932f4 | 4825 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
4826 | |
4827 | xsprintf_sys_block_path(p, "/slaves", devno); | |
4828 | d = opendir(p); | |
4829 | if (d) { | |
4830 | struct dirent *de; | |
4831 | ||
4832 | for (;;) { | |
4833 | _cleanup_free_ char *q = NULL, *t = NULL; | |
4834 | sd_id128_t u; | |
4835 | dev_t sl; | |
4836 | ||
4837 | errno = 0; | |
4838 | de = readdir_no_dot(d); | |
4839 | if (!de) { | |
4840 | if (errno != 0) | |
4841 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
4842 | ||
4843 | break; | |
4844 | } | |
4845 | ||
4846 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
4847 | continue; | |
4848 | ||
4849 | q = path_join(p, de->d_name, "/dev"); | |
4850 | if (!q) | |
4851 | return log_oom(); | |
4852 | ||
4853 | r = read_one_line_file(q, &t); | |
4854 | if (r < 0) | |
4855 | return log_error_errno(r, "Failed to read %s: %m", q); | |
4856 | ||
7176f06c | 4857 | r = parse_devnum(t, &sl); |
5c08da58 LP |
4858 | if (r < 0) { |
4859 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
4860 | continue; | |
4861 | } | |
4862 | if (major(sl) == 0) { | |
4863 | log_debug_errno(r, "Device backing %s is special, ignoring: %m", q); | |
4864 | continue; | |
4865 | } | |
4866 | ||
22e932f4 | 4867 | r = resolve_copy_blocks_auto_candidate(sl, type, restrict_devno, &u); |
5c08da58 LP |
4868 | if (r < 0) |
4869 | return r; | |
4870 | if (r > 0) { | |
4871 | /* We found a matching one! */ | |
4872 | if (found != 0) | |
4873 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
4874 | "Multiple matching partitions found, refusing."); | |
4875 | ||
4876 | found = sl; | |
4877 | found_uuid = u; | |
4878 | } | |
4879 | } | |
4880 | } else if (errno != ENOENT) | |
4881 | return log_error_errno(errno, "Failed open %s: %m", p); | |
4882 | else { | |
22e932f4 | 4883 | r = resolve_copy_blocks_auto_candidate(devno, type, restrict_devno, &found_uuid); |
5c08da58 LP |
4884 | if (r < 0) |
4885 | return r; | |
4886 | if (r > 0) | |
4887 | found = devno; | |
4888 | } | |
4889 | ||
4890 | if (found == 0) | |
4891 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
4892 | "Unable to automatically discover suitable partition to copy blocks from."); | |
4893 | ||
1a037ba2 YW |
4894 | if (ret_devno) |
4895 | *ret_devno = found; | |
5c08da58 LP |
4896 | |
4897 | if (ret_uuid) | |
4898 | *ret_uuid = found_uuid; | |
4899 | ||
4900 | return 0; | |
4901 | } | |
4902 | ||
4903 | static int context_open_copy_block_paths( | |
4904 | Context *context, | |
5c08da58 LP |
4905 | dev_t restrict_devno) { |
4906 | ||
757bc2e4 LP |
4907 | int r; |
4908 | ||
4909 | assert(context); | |
4910 | ||
4911 | LIST_FOREACH(partitions, p, context->partitions) { | |
4912 | _cleanup_close_ int source_fd = -1; | |
5c08da58 LP |
4913 | _cleanup_free_ char *opened = NULL; |
4914 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
4915 | uint64_t size; |
4916 | struct stat st; | |
4917 | ||
4918 | assert(p->copy_blocks_fd < 0); | |
4919 | assert(p->copy_blocks_size == UINT64_MAX); | |
4920 | ||
4921 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
4922 | continue; | |
4923 | ||
5c08da58 | 4924 | if (p->copy_blocks_path) { |
757bc2e4 | 4925 | |
585c5c75 | 4926 | source_fd = chase_symlinks_and_open(p->copy_blocks_path, p->copy_blocks_root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
5c08da58 LP |
4927 | if (source_fd < 0) |
4928 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 4929 | |
5c08da58 LP |
4930 | if (fstat(source_fd, &st) < 0) |
4931 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
4932 | ||
4933 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
4934 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
4935 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
4936 | ||
4937 | } else if (p->copy_blocks_auto) { | |
1a037ba2 | 4938 | dev_t devno; |
5c08da58 | 4939 | |
22e932f4 | 4940 | r = resolve_copy_blocks_auto(p->type, p->copy_blocks_root, restrict_devno, &devno, &uuid); |
5c08da58 LP |
4941 | if (r < 0) |
4942 | return r; | |
4943 | ||
ca822829 | 4944 | source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
1a037ba2 | 4945 | if (r < 0) |
ca822829 YW |
4946 | return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m", |
4947 | DEVNUM_FORMAT_VAL(devno)); | |
5c08da58 LP |
4948 | |
4949 | if (fstat(source_fd, &st) < 0) | |
4950 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
1a037ba2 | 4951 | } else |
5c08da58 | 4952 | continue; |
757bc2e4 LP |
4953 | |
4954 | if (S_ISDIR(st.st_mode)) { | |
ca822829 YW |
4955 | _cleanup_free_ char *bdev = NULL; |
4956 | dev_t devt; | |
757bc2e4 LP |
4957 | |
4958 | /* If the file is a directory, automatically find the backing block device */ | |
4959 | ||
4960 | if (major(st.st_dev) != 0) | |
ca822829 | 4961 | devt = st.st_dev; |
757bc2e4 | 4962 | else { |
757bc2e4 | 4963 | /* Special support for btrfs */ |
757bc2e4 | 4964 | r = btrfs_get_block_device_fd(source_fd, &devt); |
67f0ac8c | 4965 | if (r == -EUCLEAN) |
5c08da58 | 4966 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 4967 | if (r < 0) |
5c08da58 | 4968 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 | 4969 | } |
757bc2e4 LP |
4970 | |
4971 | safe_close(source_fd); | |
4972 | ||
ca822829 YW |
4973 | source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev); |
4974 | if (r < 0) | |
4975 | return log_error_errno(r, "Failed to open block device backing '%s': %m", opened); | |
757bc2e4 LP |
4976 | |
4977 | if (fstat(source_fd, &st) < 0) | |
4978 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
757bc2e4 LP |
4979 | } |
4980 | ||
4981 | if (S_ISREG(st.st_mode)) | |
4982 | size = st.st_size; | |
4983 | else if (S_ISBLK(st.st_mode)) { | |
4984 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
4985 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
4986 | } else | |
5c08da58 | 4987 | 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 |
4988 | |
4989 | if (size <= 0) | |
5c08da58 | 4990 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 4991 | if (size % 512 != 0) |
5c08da58 | 4992 | 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 |
4993 | |
4994 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
4995 | p->copy_blocks_size = size; | |
5c08da58 LP |
4996 | |
4997 | free_and_replace(p->copy_blocks_path, opened); | |
4998 | ||
4999 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
11749b61 | 5000 | if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) { |
5c08da58 | 5001 | p->new_uuid = uuid; |
11749b61 DDM |
5002 | p->new_uuid_is_set = true; |
5003 | } | |
757bc2e4 LP |
5004 | } |
5005 | ||
5006 | return 0; | |
5007 | } | |
5008 | ||
c4a87b76 DDM |
5009 | static int fd_apparent_size(int fd, uint64_t *ret) { |
5010 | off_t initial = 0; | |
5011 | uint64_t size = 0; | |
5012 | ||
5013 | assert(fd >= 0); | |
5014 | assert(ret); | |
5015 | ||
5016 | initial = lseek(fd, 0, SEEK_CUR); | |
5017 | if (initial < 0) | |
5018 | return log_error_errno(errno, "Failed to get file offset: %m"); | |
5019 | ||
5020 | for (off_t off = 0;;) { | |
5021 | off_t r; | |
5022 | ||
5023 | r = lseek(fd, off, SEEK_DATA); | |
5024 | if (r < 0 && errno == ENXIO) | |
5025 | /* If errno == ENXIO, that means we've reached the final hole of the file and | |
5026 | * that hole isn't followed by more data. */ | |
5027 | break; | |
5028 | if (r < 0) | |
5029 | return log_error_errno(errno, "Failed to seek data in file from offset %"PRIi64": %m", off); | |
5030 | ||
5031 | off = r; /* Set the offset to the start of the data segment. */ | |
5032 | ||
5033 | /* After copying a potential hole, find the end of the data segment by looking for | |
5034 | * the next hole. If we get ENXIO, we're at EOF. */ | |
5035 | r = lseek(fd, off, SEEK_HOLE); | |
5036 | if (r < 0) { | |
5037 | if (errno == ENXIO) | |
5038 | break; | |
5039 | return log_error_errno(errno, "Failed to seek hole in file from offset %"PRIi64": %m", off); | |
5040 | } | |
5041 | ||
5042 | size += r - off; | |
5043 | off = r; | |
5044 | } | |
5045 | ||
5046 | if (lseek(fd, initial, SEEK_SET) < 0) | |
5047 | return log_error_errno(errno, "Failed to reset file offset: %m"); | |
5048 | ||
5049 | *ret = size; | |
5050 | ||
5051 | return 0; | |
5052 | } | |
5053 | ||
5054 | static int context_minimize(Context *context) { | |
5055 | _cleanup_set_free_ Set *denylist = NULL; | |
5056 | const char *vt; | |
5057 | int r; | |
5058 | ||
5059 | assert(context); | |
5060 | ||
5061 | r = make_copy_files_denylist(context, &denylist); | |
5062 | if (r < 0) | |
5063 | return r; | |
5064 | ||
5065 | r = var_tmp_dir(&vt); | |
5066 | if (r < 0) | |
5067 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
5068 | ||
5069 | LIST_FOREACH(partitions, p, context->partitions) { | |
e59678b2 | 5070 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
c4a87b76 | 5071 | _cleanup_(unlink_and_freep) char *temp = NULL; |
c4a87b76 DDM |
5072 | _cleanup_close_ int fd = -1; |
5073 | sd_id128_t fs_uuid; | |
5074 | uint64_t fsz; | |
5075 | ||
5076 | if (p->dropped) | |
5077 | continue; | |
5078 | ||
5079 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
5080 | continue; | |
5081 | ||
5082 | if (!p->format) | |
5083 | continue; | |
5084 | ||
5085 | if (!p->minimize) | |
5086 | continue; | |
5087 | ||
5088 | assert(!p->copy_blocks_path); | |
5089 | ||
5090 | r = tempfn_random_child(vt, "repart", &temp); | |
5091 | if (r < 0) | |
5092 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
5093 | ||
59e2be46 DDM |
5094 | if (fstype_is_ro(p->format)) |
5095 | fs_uuid = p->fs_uuid; | |
5096 | else { | |
c4a87b76 DDM |
5097 | fd = open(temp, O_CREAT|O_EXCL|O_CLOEXEC|O_RDWR|O_NOCTTY, 0600); |
5098 | if (fd < 0) | |
5099 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
5100 | ||
5101 | /* This may seem huge but it will be created sparse so it doesn't take up any space | |
5102 | * on disk until written to. */ | |
5103 | if (ftruncate(fd, 1024ULL * 1024ULL * 1024ULL * 1024ULL) < 0) | |
5104 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
5105 | FORMAT_BYTES(1024ULL * 1024ULL * 1024ULL * 1024ULL)); | |
5106 | ||
5107 | /* We're going to populate this filesystem twice so use a random UUID the first time | |
5108 | * to avoid UUID conflicts. */ | |
5109 | r = sd_id128_randomize(&fs_uuid); | |
5110 | if (r < 0) | |
5111 | return r; | |
59e2be46 DDM |
5112 | } |
5113 | ||
5114 | if (mkfs_supports_root_option(p->format)) { | |
e59678b2 | 5115 | r = partition_populate_directory(p, denylist, &root); |
c4a87b76 DDM |
5116 | if (r < 0) |
5117 | return r; | |
c4a87b76 DDM |
5118 | } |
5119 | ||
e59678b2 | 5120 | r = make_filesystem(temp, p->format, strempty(p->new_label), root, fs_uuid, arg_discard); |
c4a87b76 DDM |
5121 | if (r < 0) |
5122 | return r; | |
5123 | ||
5124 | /* Read-only filesystems are minimal from the first try because they create and size the | |
5125 | * loopback file for us. */ | |
5126 | if (fstype_is_ro(p->format)) { | |
5127 | p->copy_blocks_path = TAKE_PTR(temp); | |
5128 | continue; | |
5129 | } | |
5130 | ||
59e2be46 DDM |
5131 | if (!mkfs_supports_root_option(p->format)) { |
5132 | r = partition_populate_filesystem(p, temp, denylist); | |
5133 | if (r < 0) | |
5134 | return r; | |
5135 | } | |
c4a87b76 DDM |
5136 | |
5137 | /* Other filesystems need to be provided with a pre-sized loopback file and will adapt to | |
5138 | * fully occupy it. Because we gave the filesystem a 1T sparse file, we need to shrink the | |
5139 | * filesystem down to a reasonable size again to fit it in the disk image. While there are | |
5140 | * some filesystems that support shrinking, it doesn't always work properly (e.g. shrinking | |
5141 | * btrfs gives us a 2.0G filesystem regardless of what we put in it). Instead, let's populate | |
5142 | * the filesystem again, but this time, instead of providing the filesystem with a 1T sparse | |
5143 | * loopback file, let's size the loopback file based on the actual data used by the | |
5144 | * filesystem in the sparse file after the first attempt. This should be a good guess of the | |
5145 | * minimal amount of space needed in the filesystem to fit all the required data. | |
5146 | */ | |
5147 | r = fd_apparent_size(fd, &fsz); | |
5148 | if (r < 0) | |
5149 | return r; | |
5150 | ||
5151 | /* Massage the size a bit because just going by actual data used in the sparse file isn't | |
5152 | * fool-proof. */ | |
5153 | fsz = round_up_size(fsz + (fsz / 2), context->grain_size); | |
5154 | if (minimal_size_by_fs_name(p->format) != UINT64_MAX) | |
5155 | fsz = MAX(minimal_size_by_fs_name(p->format), fsz); | |
5156 | ||
5157 | /* Erase the previous filesystem first. */ | |
5158 | if (ftruncate(fd, 0)) | |
5159 | return log_error_errno(errno, "Failed to erase temporary file: %m"); | |
5160 | ||
5161 | if (ftruncate(fd, fsz)) | |
5162 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", FORMAT_BYTES(fsz)); | |
5163 | ||
e59678b2 | 5164 | r = make_filesystem(temp, p->format, strempty(p->new_label), root, p->fs_uuid, arg_discard); |
c4a87b76 DDM |
5165 | if (r < 0) |
5166 | return r; | |
5167 | ||
59e2be46 DDM |
5168 | if (!mkfs_supports_root_option(p->format)) { |
5169 | r = partition_populate_filesystem(p, temp, denylist); | |
5170 | if (r < 0) | |
5171 | return r; | |
5172 | } | |
c4a87b76 DDM |
5173 | |
5174 | p->copy_blocks_path = TAKE_PTR(temp); | |
5175 | } | |
5176 | ||
5177 | return 0; | |
5178 | } | |
5179 | ||
81d1098b DDM |
5180 | static int parse_filter_partitions(const char *p) { |
5181 | int r; | |
5182 | ||
5183 | for (;;) { | |
5184 | _cleanup_free_ char *name = NULL; | |
5185 | GptPartitionType type; | |
5186 | ||
5187 | r = extract_first_word(&p, &name, ",", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
5188 | if (r == 0) | |
5189 | break; | |
5190 | if (r < 0) | |
5191 | return log_error_errno(r, "Failed to extract partition designator: %s", optarg); | |
5192 | ||
5193 | r = gpt_partition_type_from_string(name, &type); | |
5194 | if (r < 0) | |
5195 | return log_error_errno(r, "'%s' is not a valid partition designator", name); | |
5196 | ||
5197 | if (!GREEDY_REALLOC(arg_filter_partitions, arg_filter_partitions_size + 1)) | |
5198 | return log_oom(); | |
5199 | ||
5200 | arg_filter_partitions[arg_filter_partitions_size++] = type.uuid; | |
5201 | } | |
5202 | ||
5203 | return 0; | |
5204 | } | |
5205 | ||
e594a3b1 LP |
5206 | static int help(void) { |
5207 | _cleanup_free_ char *link = NULL; | |
5208 | int r; | |
5209 | ||
5210 | r = terminal_urlify_man("systemd-repart", "1", &link); | |
5211 | if (r < 0) | |
5212 | return log_oom(); | |
5213 | ||
5214 | printf("%s [OPTIONS...] [DEVICE]\n" | |
5215 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
5216 | " -h --help Show this help\n" | |
5217 | " --version Show package version\n" | |
896e678b LP |
5218 | " --no-pager Do not pipe output into a pager\n" |
5219 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 5220 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
5221 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
5222 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 5223 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 5224 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
5225 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
5226 | " them\n" | |
5227 | " --can-factory-reset Test whether factory reset is defined\n" | |
5228 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 5229 | " --image=PATH Operate relative to image file\n" |
9d252fbb | 5230 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 5231 | " --key-file=PATH Key to use when encrypting partitions\n" |
b456191d DDM |
5232 | " --private-key=PATH Private key to use when generating verity roothash\n" |
5233 | " signatures\n" | |
5234 | " --certificate=PATH PEM certificate to use when generating verity\n" | |
5235 | " roothash signatures\n" | |
889914ef | 5236 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 5237 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 5238 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
02ef97cd LP |
5239 | " --tpm2-public-key=PATH\n" |
5240 | " Enroll signed TPM2 PCR policy against PEM public key\n" | |
5241 | " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n" | |
5242 | " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n" | |
e594a3b1 | 5243 | " --seed=UUID 128bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 5244 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 5245 | " --json=pretty|short|off\n" |
de8231b0 | 5246 | " Generate JSON output\n" |
4cee8333 | 5247 | " --split=BOOL Whether to generate split artifacts\n" |
81d1098b DDM |
5248 | " --include-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
5249 | " Only operate on partitions of the specified types\n" | |
5250 | " --exclude-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" | |
5251 | " Don't operate on partitions of the specified types\n" | |
bc556335 DDM |
5252 | "\nSee the %s for details.\n", |
5253 | program_invocation_short_name, | |
5254 | ansi_highlight(), | |
5255 | ansi_normal(), | |
5256 | link); | |
e594a3b1 LP |
5257 | |
5258 | return 0; | |
5259 | } | |
5260 | ||
5261 | static int parse_argv(int argc, char *argv[]) { | |
5262 | ||
5263 | enum { | |
5264 | ARG_VERSION = 0x100, | |
896e678b LP |
5265 | ARG_NO_PAGER, |
5266 | ARG_NO_LEGEND, | |
e594a3b1 LP |
5267 | ARG_DRY_RUN, |
5268 | ARG_EMPTY, | |
5269 | ARG_DISCARD, | |
5270 | ARG_FACTORY_RESET, | |
5271 | ARG_CAN_FACTORY_RESET, | |
5272 | ARG_ROOT, | |
252d6267 | 5273 | ARG_IMAGE, |
e594a3b1 LP |
5274 | ARG_SEED, |
5275 | ARG_PRETTY, | |
5276 | ARG_DEFINITIONS, | |
a26f4a49 | 5277 | ARG_SIZE, |
a015fbe7 | 5278 | ARG_JSON, |
b9df3536 | 5279 | ARG_KEY_FILE, |
b456191d DDM |
5280 | ARG_PRIVATE_KEY, |
5281 | ARG_CERTIFICATE, | |
889914ef LP |
5282 | ARG_TPM2_DEVICE, |
5283 | ARG_TPM2_PCRS, | |
02ef97cd LP |
5284 | ARG_TPM2_PUBLIC_KEY, |
5285 | ARG_TPM2_PUBLIC_KEY_PCRS, | |
4cee8333 | 5286 | ARG_SPLIT, |
81d1098b DDM |
5287 | ARG_INCLUDE_PARTITIONS, |
5288 | ARG_EXCLUDE_PARTITIONS, | |
e594a3b1 LP |
5289 | }; |
5290 | ||
5291 | static const struct option options[] = { | |
02ef97cd LP |
5292 | { "help", no_argument, NULL, 'h' }, |
5293 | { "version", no_argument, NULL, ARG_VERSION }, | |
5294 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
5295 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
5296 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, | |
5297 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
5298 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
5299 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
5300 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
5301 | { "root", required_argument, NULL, ARG_ROOT }, | |
5302 | { "image", required_argument, NULL, ARG_IMAGE }, | |
5303 | { "seed", required_argument, NULL, ARG_SEED }, | |
5304 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
5305 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
5306 | { "size", required_argument, NULL, ARG_SIZE }, | |
5307 | { "json", required_argument, NULL, ARG_JSON }, | |
5308 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, | |
b456191d DDM |
5309 | { "private-key", required_argument, NULL, ARG_PRIVATE_KEY }, |
5310 | { "certificate", required_argument, NULL, ARG_CERTIFICATE }, | |
02ef97cd LP |
5311 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
5312 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
5313 | { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY }, | |
5314 | { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS }, | |
4cee8333 | 5315 | { "split", required_argument, NULL, ARG_SPLIT }, |
81d1098b DDM |
5316 | { "include-partitions", required_argument, NULL, ARG_INCLUDE_PARTITIONS }, |
5317 | { "exclude-partitions", required_argument, NULL, ARG_EXCLUDE_PARTITIONS }, | |
e594a3b1 LP |
5318 | {} |
5319 | }; | |
5320 | ||
a26f4a49 | 5321 | int c, r, dry_run = -1; |
e594a3b1 LP |
5322 | |
5323 | assert(argc >= 0); | |
5324 | assert(argv); | |
5325 | ||
5326 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
5327 | ||
5328 | switch (c) { | |
5329 | ||
5330 | case 'h': | |
5331 | return help(); | |
5332 | ||
5333 | case ARG_VERSION: | |
5334 | return version(); | |
5335 | ||
896e678b LP |
5336 | case ARG_NO_PAGER: |
5337 | arg_pager_flags |= PAGER_DISABLE; | |
5338 | break; | |
5339 | ||
5340 | case ARG_NO_LEGEND: | |
5341 | arg_legend = false; | |
5342 | break; | |
5343 | ||
e594a3b1 | 5344 | case ARG_DRY_RUN: |
599c7c54 | 5345 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 5346 | if (r < 0) |
599c7c54 | 5347 | return r; |
e594a3b1 LP |
5348 | break; |
5349 | ||
5350 | case ARG_EMPTY: | |
5351 | if (isempty(optarg) || streq(optarg, "refuse")) | |
5352 | arg_empty = EMPTY_REFUSE; | |
5353 | else if (streq(optarg, "allow")) | |
5354 | arg_empty = EMPTY_ALLOW; | |
5355 | else if (streq(optarg, "require")) | |
5356 | arg_empty = EMPTY_REQUIRE; | |
5357 | else if (streq(optarg, "force")) | |
5358 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
5359 | else if (streq(optarg, "create")) { |
5360 | arg_empty = EMPTY_CREATE; | |
5361 | ||
5362 | if (dry_run < 0) | |
5363 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
5364 | * anew. After all we cannot really break anyone's | |
5365 | * partition tables that way. */ | |
5366 | } else | |
e594a3b1 LP |
5367 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5368 | "Failed to parse --empty= parameter: %s", optarg); | |
5369 | break; | |
5370 | ||
5371 | case ARG_DISCARD: | |
599c7c54 | 5372 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 5373 | if (r < 0) |
599c7c54 | 5374 | return r; |
e594a3b1 LP |
5375 | break; |
5376 | ||
5377 | case ARG_FACTORY_RESET: | |
c3470872 | 5378 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 5379 | if (r < 0) |
c3470872 | 5380 | return r; |
e594a3b1 LP |
5381 | arg_factory_reset = r; |
5382 | break; | |
5383 | ||
5384 | case ARG_CAN_FACTORY_RESET: | |
5385 | arg_can_factory_reset = true; | |
5386 | break; | |
5387 | ||
5388 | case ARG_ROOT: | |
252d6267 LP |
5389 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
5390 | if (r < 0) | |
5391 | return r; | |
5392 | break; | |
5393 | ||
5394 | case ARG_IMAGE: | |
5395 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
5396 | if (r < 0) |
5397 | return r; | |
5398 | break; | |
5399 | ||
5400 | case ARG_SEED: | |
5401 | if (isempty(optarg)) { | |
5402 | arg_seed = SD_ID128_NULL; | |
5403 | arg_randomize = false; | |
5404 | } else if (streq(optarg, "random")) | |
5405 | arg_randomize = true; | |
5406 | else { | |
5407 | r = sd_id128_from_string(optarg, &arg_seed); | |
5408 | if (r < 0) | |
5409 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
5410 | ||
5411 | arg_randomize = false; | |
5412 | } | |
5413 | ||
5414 | break; | |
5415 | ||
5416 | case ARG_PRETTY: | |
c3470872 | 5417 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 5418 | if (r < 0) |
c3470872 | 5419 | return r; |
e594a3b1 LP |
5420 | arg_pretty = r; |
5421 | break; | |
5422 | ||
224c853f RP |
5423 | case ARG_DEFINITIONS: { |
5424 | _cleanup_free_ char *path = NULL; | |
5425 | r = parse_path_argument(optarg, false, &path); | |
e594a3b1 LP |
5426 | if (r < 0) |
5427 | return r; | |
224c853f RP |
5428 | if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0) |
5429 | return log_oom(); | |
e594a3b1 | 5430 | break; |
224c853f | 5431 | } |
e594a3b1 | 5432 | |
a26f4a49 LP |
5433 | case ARG_SIZE: { |
5434 | uint64_t parsed, rounded; | |
5435 | ||
170c9823 LP |
5436 | if (streq(optarg, "auto")) { |
5437 | arg_size = UINT64_MAX; | |
5438 | arg_size_auto = true; | |
5439 | break; | |
5440 | } | |
5441 | ||
a26f4a49 LP |
5442 | r = parse_size(optarg, 1024, &parsed); |
5443 | if (r < 0) | |
5444 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
5445 | ||
5446 | rounded = round_up_size(parsed, 4096); | |
5447 | if (rounded == 0) | |
5448 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
5449 | if (rounded == UINT64_MAX) | |
5450 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
5451 | ||
5452 | if (rounded != parsed) | |
e2341b6b DT |
5453 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")", |
5454 | parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded); | |
a26f4a49 LP |
5455 | |
5456 | arg_size = rounded; | |
170c9823 | 5457 | arg_size_auto = false; |
a26f4a49 LP |
5458 | break; |
5459 | } | |
b9df3536 | 5460 | |
a015fbe7 | 5461 | case ARG_JSON: |
b1e8f46c | 5462 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
5463 | if (r <= 0) |
5464 | return r; | |
a015fbe7 TH |
5465 | |
5466 | break; | |
5467 | ||
b9df3536 LP |
5468 | case ARG_KEY_FILE: { |
5469 | _cleanup_(erase_and_freep) char *k = NULL; | |
5470 | size_t n = 0; | |
5471 | ||
8b3c3a49 | 5472 | r = read_full_file_full( |
986311c2 | 5473 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
5474 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
5475 | NULL, | |
5476 | &k, &n); | |
b9df3536 LP |
5477 | if (r < 0) |
5478 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5479 | ||
5480 | erase_and_free(arg_key); | |
5481 | arg_key = TAKE_PTR(k); | |
5482 | arg_key_size = n; | |
5483 | break; | |
5484 | } | |
a26f4a49 | 5485 | |
b456191d DDM |
5486 | case ARG_PRIVATE_KEY: { |
5487 | _cleanup_(erase_and_freep) char *k = NULL; | |
5488 | size_t n = 0; | |
5489 | ||
5490 | r = read_full_file_full( | |
5491 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5492 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, | |
5493 | NULL, | |
5494 | &k, &n); | |
5495 | if (r < 0) | |
5496 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5497 | ||
5498 | EVP_PKEY_free(arg_private_key); | |
5499 | arg_private_key = NULL; | |
5500 | r = parse_private_key(k, n, &arg_private_key); | |
5501 | if (r < 0) | |
5502 | return r; | |
5503 | break; | |
5504 | } | |
5505 | ||
5506 | case ARG_CERTIFICATE: { | |
5507 | _cleanup_free_ char *cert = NULL; | |
5508 | size_t n = 0; | |
5509 | ||
5510 | r = read_full_file_full( | |
5511 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5512 | READ_FULL_FILE_CONNECT_SOCKET, | |
5513 | NULL, | |
5514 | &cert, &n); | |
5515 | if (r < 0) | |
5516 | return log_error_errno(r, "Failed to read certificate file '%s': %m", optarg); | |
5517 | ||
5518 | X509_free(arg_certificate); | |
5519 | arg_certificate = NULL; | |
5520 | r = parse_x509_certificate(cert, n, &arg_certificate); | |
5521 | if (r < 0) | |
5522 | return r; | |
5523 | break; | |
5524 | } | |
5525 | ||
889914ef LP |
5526 | case ARG_TPM2_DEVICE: { |
5527 | _cleanup_free_ char *device = NULL; | |
5528 | ||
5529 | if (streq(optarg, "list")) | |
5530 | return tpm2_list_devices(); | |
5531 | ||
5532 | if (!streq(optarg, "auto")) { | |
5533 | device = strdup(optarg); | |
5534 | if (!device) | |
5535 | return log_oom(); | |
5536 | } | |
5537 | ||
5538 | free(arg_tpm2_device); | |
5539 | arg_tpm2_device = TAKE_PTR(device); | |
5540 | break; | |
5541 | } | |
5542 | ||
222a951f LP |
5543 | case ARG_TPM2_PCRS: |
5544 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_pcr_mask); | |
889914ef LP |
5545 | if (r < 0) |
5546 | return r; | |
5547 | ||
889914ef | 5548 | break; |
889914ef | 5549 | |
02ef97cd LP |
5550 | case ARG_TPM2_PUBLIC_KEY: |
5551 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key); | |
5552 | if (r < 0) | |
5553 | return r; | |
5554 | ||
5555 | break; | |
5556 | ||
5557 | case ARG_TPM2_PUBLIC_KEY_PCRS: | |
5558 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_public_key_pcr_mask); | |
5559 | if (r < 0) | |
5560 | return r; | |
5561 | ||
5562 | break; | |
5563 | ||
4cee8333 DDM |
5564 | case ARG_SPLIT: |
5565 | r = parse_boolean_argument("--split=", optarg, NULL); | |
5566 | if (r < 0) | |
5567 | return r; | |
5568 | ||
5569 | arg_split = r; | |
5570 | break; | |
5571 | ||
81d1098b DDM |
5572 | case ARG_INCLUDE_PARTITIONS: |
5573 | if (arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE) | |
5574 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5575 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
5576 | ||
5577 | r = parse_filter_partitions(optarg); | |
5578 | if (r < 0) | |
5579 | return r; | |
5580 | ||
5581 | arg_filter_partitions_type = FILTER_PARTITIONS_INCLUDE; | |
5582 | ||
5583 | break; | |
5584 | ||
5585 | case ARG_EXCLUDE_PARTITIONS: | |
5586 | if (arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE) | |
5587 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5588 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
5589 | ||
5590 | r = parse_filter_partitions(optarg); | |
5591 | if (r < 0) | |
5592 | return r; | |
5593 | ||
5594 | arg_filter_partitions_type = FILTER_PARTITIONS_EXCLUDE; | |
5595 | ||
5596 | break; | |
5597 | ||
e594a3b1 LP |
5598 | case '?': |
5599 | return -EINVAL; | |
5600 | ||
5601 | default: | |
04499a70 | 5602 | assert_not_reached(); |
e594a3b1 LP |
5603 | } |
5604 | ||
5605 | if (argc - optind > 1) | |
5606 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5607 | "Expected at most one argument, the path to the block device."); | |
5608 | ||
a26f4a49 | 5609 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 5610 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 5611 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
5612 | |
5613 | if (arg_can_factory_reset) | |
a26f4a49 LP |
5614 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
5615 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
5616 | * open things strictly read-only. */ | |
5617 | else if (dry_run >= 0) | |
5618 | arg_dry_run = dry_run; | |
5619 | ||
170c9823 | 5620 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
5621 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5622 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 5623 | |
252d6267 LP |
5624 | if (arg_image && arg_root) |
5625 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
5626 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
5627 | |
5628 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
5629 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
5630 | * is vendor-supplied but the root fs formatted on first boot. */ | |
5631 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
5632 | if (r <= 0) { | |
5633 | if (r < 0 && r != -ENOENT) | |
5634 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
5635 | ||
5636 | arg_root = strdup("/sysroot"); | |
5637 | } else | |
5638 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
5639 | if (!arg_root) |
5640 | return log_oom(); | |
5641 | } | |
5642 | ||
e594a3b1 | 5643 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 5644 | |
252d6267 | 5645 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
5646 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5647 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
5648 | ||
4cee8333 DDM |
5649 | if (arg_split && !arg_node) |
5650 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5651 | "A path to a loopback file must be specified when --split is used."); | |
5652 | ||
889914ef LP |
5653 | if (arg_tpm2_pcr_mask == UINT32_MAX) |
5654 | arg_tpm2_pcr_mask = TPM2_PCR_MASK_DEFAULT; | |
02ef97cd LP |
5655 | if (arg_tpm2_public_key_pcr_mask == UINT32_MAX) |
5656 | arg_tpm2_public_key_pcr_mask = UINT32_C(1) << TPM_PCR_INDEX_KERNEL_IMAGE; | |
889914ef | 5657 | |
a26d463d DDM |
5658 | if (arg_pretty < 0 && isatty(STDOUT_FILENO)) |
5659 | arg_pretty = true; | |
5660 | ||
e594a3b1 LP |
5661 | return 1; |
5662 | } | |
5663 | ||
5664 | static int parse_proc_cmdline_factory_reset(void) { | |
5665 | bool b; | |
5666 | int r; | |
5667 | ||
5668 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
5669 | return 0; | |
5670 | ||
5671 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
5672 | return 0; | |
5673 | ||
5674 | r = proc_cmdline_get_bool("systemd.factory_reset", &b); | |
5675 | if (r < 0) | |
5676 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
5677 | if (r > 0) { | |
5678 | arg_factory_reset = b; | |
5679 | ||
5680 | if (b) | |
5681 | log_notice("Honouring factory reset requested via kernel command line."); | |
5682 | } | |
5683 | ||
5684 | return 0; | |
5685 | } | |
5686 | ||
5687 | static int parse_efi_variable_factory_reset(void) { | |
5688 | _cleanup_free_ char *value = NULL; | |
5689 | int r; | |
5690 | ||
5691 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
5692 | return 0; | |
5693 | ||
5694 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
5695 | return 0; | |
5696 | ||
e6f055cb | 5697 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
e594a3b1 LP |
5698 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
5699 | return 0; | |
5700 | if (r < 0) | |
5701 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); | |
5702 | ||
5703 | r = parse_boolean(value); | |
5704 | if (r < 0) | |
5705 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
5706 | ||
5707 | arg_factory_reset = r; | |
5708 | if (r) | |
111a3aae | 5709 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
5710 | |
5711 | return 0; | |
5712 | } | |
5713 | ||
5714 | static int remove_efi_variable_factory_reset(void) { | |
5715 | int r; | |
5716 | ||
e6f055cb | 5717 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
e594a3b1 LP |
5718 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
5719 | return 0; | |
5720 | if (r < 0) | |
5721 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); | |
5722 | ||
5723 | log_info("Successfully unset EFI variable FactoryReset."); | |
5724 | return 0; | |
5725 | } | |
5726 | ||
252d6267 LP |
5727 | static int acquire_root_devno( |
5728 | const char *p, | |
5729 | const char *root, | |
5730 | int mode, | |
5731 | char **ret, | |
5732 | int *ret_fd) { | |
5733 | ||
5734 | _cleanup_free_ char *found_path = NULL; | |
5735 | dev_t devno, fd_devno = MODE_INVALID; | |
e594a3b1 LP |
5736 | _cleanup_close_ int fd = -1; |
5737 | struct stat st; | |
e594a3b1 LP |
5738 | int r; |
5739 | ||
a26f4a49 LP |
5740 | assert(p); |
5741 | assert(ret); | |
5742 | assert(ret_fd); | |
5743 | ||
252d6267 | 5744 | fd = chase_symlinks_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 5745 | if (fd < 0) |
252d6267 | 5746 | return fd; |
e594a3b1 LP |
5747 | |
5748 | if (fstat(fd, &st) < 0) | |
5749 | return -errno; | |
5750 | ||
5751 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 5752 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 5753 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
5754 | return 0; |
5755 | } | |
5756 | ||
252d6267 LP |
5757 | if (S_ISBLK(st.st_mode)) { |
5758 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 5759 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
5760 | if (root) |
5761 | return -EPERM; | |
5762 | ||
a26f4a49 | 5763 | fd_devno = devno = st.st_rdev; |
252d6267 | 5764 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
5765 | |
5766 | devno = st.st_dev; | |
a26f4a49 | 5767 | if (major(devno) == 0) { |
e594a3b1 LP |
5768 | r = btrfs_get_block_device_fd(fd, &devno); |
5769 | if (r == -ENOTTY) /* not btrfs */ | |
5770 | return -ENODEV; | |
5771 | if (r < 0) | |
5772 | return r; | |
5773 | } | |
e594a3b1 LP |
5774 | } else |
5775 | return -ENOTBLK; | |
5776 | ||
5777 | /* From dm-crypt to backing partition */ | |
5778 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
5779 | if (r == -ENOENT) |
5780 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
5781 | else if (r < 0) | |
e594a3b1 LP |
5782 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
5783 | ||
5784 | /* From partition to whole disk containing it */ | |
5785 | r = block_get_whole_disk(devno, &devno); | |
5786 | if (r < 0) | |
162392b7 | 5787 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 5788 | |
4fe46c34 | 5789 | r = devname_from_devnum(S_IFBLK, devno, ret); |
a26f4a49 LP |
5790 | if (r < 0) |
5791 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
5792 | ||
6bbae9f8 | 5793 | /* Only if we still look at the same block device we can reuse the fd. Otherwise return an |
a26f4a49 | 5794 | * invalidated fd. */ |
f5fbe71d | 5795 | *ret_fd = fd_devno != MODE_INVALID && fd_devno == devno ? TAKE_FD(fd) : -1; |
a26f4a49 | 5796 | return 0; |
e594a3b1 LP |
5797 | } |
5798 | ||
a26f4a49 | 5799 | static int find_root(char **ret, int *ret_fd) { |
54632d2e | 5800 | _cleanup_free_ char *device = NULL; |
5980d463 | 5801 | int r; |
e594a3b1 | 5802 | |
a26f4a49 LP |
5803 | assert(ret); |
5804 | assert(ret_fd); | |
5805 | ||
e594a3b1 | 5806 | if (arg_node) { |
a26f4a49 LP |
5807 | if (arg_empty == EMPTY_CREATE) { |
5808 | _cleanup_close_ int fd = -1; | |
5809 | _cleanup_free_ char *s = NULL; | |
5810 | ||
5811 | s = strdup(arg_node); | |
5812 | if (!s) | |
5813 | return log_oom(); | |
5814 | ||
5332d7c6 | 5815 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
5816 | if (fd < 0) |
5817 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
5818 | ||
5819 | *ret = TAKE_PTR(s); | |
5820 | *ret_fd = TAKE_FD(fd); | |
5821 | return 0; | |
5822 | } | |
5823 | ||
252d6267 LP |
5824 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
5825 | * we'll take it relative to the host, not the image */ | |
5826 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, ret, ret_fd); | |
67f0ac8c LP |
5827 | if (r == -EUCLEAN) |
5828 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 5829 | if (r < 0) |
aa2a74ad | 5830 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
5831 | |
5832 | return 0; | |
5833 | } | |
5834 | ||
a26f4a49 LP |
5835 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
5836 | ||
54632d2e KK |
5837 | /* If the root mount has been replaced by some form of volatile file system (overlayfs), the |
5838 | * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that | |
5839 | * here. */ | |
5840 | r = readlink_malloc("/run/systemd/volatile-root", &device); | |
5841 | if (r == -ENOENT) { /* volatile-root not found */ | |
5842 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The | |
5843 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
5844 | * (think: volatile setups) */ | |
e594a3b1 | 5845 | |
54632d2e | 5846 | FOREACH_STRING(p, "/", "/usr") { |
e594a3b1 | 5847 | |
54632d2e KK |
5848 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, ret, ret_fd); |
5849 | if (r < 0) { | |
5850 | if (r == -EUCLEAN) | |
5851 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
5852 | if (r != -ENODEV) | |
5853 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
5854 | } else | |
5855 | return 0; | |
5856 | } | |
5857 | } else if (r < 0) | |
5858 | return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m"); | |
5859 | else { | |
5860 | r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, ret, ret_fd); | |
5861 | if (r == -EUCLEAN) | |
5862 | return btrfs_log_dev_root(LOG_ERR, r, device); | |
5863 | if (r < 0) | |
5864 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device); | |
5865 | ||
5866 | return 0; | |
e594a3b1 LP |
5867 | } |
5868 | ||
5869 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
5870 | } | |
5871 | ||
f9b3afae | 5872 | static int resize_pt(int fd) { |
f9b3afae LP |
5873 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
5874 | int r; | |
5875 | ||
5876 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
5877 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
5878 | * immediately write it again, with no changes. */ | |
5879 | ||
5880 | c = fdisk_new_context(); | |
5881 | if (!c) | |
5882 | return log_oom(); | |
5883 | ||
ddb6eeaf | 5884 | r = fdisk_assign_device(c, FORMAT_PROC_FD_PATH(fd), 0); |
f9b3afae | 5885 | if (r < 0) |
ddb6eeaf | 5886 | return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
5887 | |
5888 | r = fdisk_has_label(c); | |
5889 | if (r < 0) | |
ddb6eeaf | 5890 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
5891 | if (r == 0) { |
5892 | log_debug("Not resizing partition table, as there currently is none."); | |
5893 | return 0; | |
5894 | } | |
5895 | ||
5896 | r = fdisk_write_disklabel(c); | |
5897 | if (r < 0) | |
5898 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
5899 | ||
5900 | log_info("Resized partition table."); | |
5901 | return 1; | |
5902 | } | |
5903 | ||
252d6267 LP |
5904 | static int resize_backing_fd( |
5905 | const char *node, /* The primary way we access the disk image to operate on */ | |
5906 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
5907 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
5908 | LoopDevice *loop_device) { | |
5909 | ||
a26f4a49 | 5910 | _cleanup_close_ int writable_fd = -1; |
252d6267 | 5911 | uint64_t current_size; |
a26f4a49 LP |
5912 | struct stat st; |
5913 | int r; | |
5914 | ||
5915 | assert(node); | |
5916 | assert(fd); | |
5917 | ||
5918 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
5919 | return 0; | |
5920 | ||
5921 | if (*fd < 0) { | |
5922 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
5923 | * keep a reference to the file we can pass around. */ | |
5924 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
5925 | if (*fd < 0) | |
5926 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
5927 | } | |
5928 | ||
5929 | if (fstat(*fd, &st) < 0) | |
5930 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
5931 | ||
252d6267 LP |
5932 | if (S_ISBLK(st.st_mode)) { |
5933 | if (!backing_file) | |
5934 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
5935 | ||
5936 | assert(loop_device); | |
a26f4a49 | 5937 | |
252d6267 LP |
5938 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
5939 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
5940 | } else { | |
5941 | r = stat_verify_regular(&st); | |
5942 | if (r < 0) | |
5943 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
5944 | ||
5945 | assert(!backing_file); | |
5946 | assert(!loop_device); | |
5947 | current_size = st.st_size; | |
5948 | } | |
5949 | ||
252d6267 | 5950 | if (current_size >= arg_size) { |
2b59bf51 ZJS |
5951 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", |
5952 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 LP |
5953 | return 0; |
5954 | } | |
5955 | ||
252d6267 LP |
5956 | if (S_ISBLK(st.st_mode)) { |
5957 | assert(backing_file); | |
5958 | ||
5959 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
5960 | * backing file, hence let's do that. */ | |
5961 | ||
5962 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
5963 | if (writable_fd < 0) | |
5964 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
5965 | ||
5966 | if (fstat(writable_fd, &st) < 0) | |
5967 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
5968 | ||
5969 | r = stat_verify_regular(&st); | |
5970 | if (r < 0) | |
5971 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
5972 | ||
5973 | if ((uint64_t) st.st_size != current_size) | |
5974 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2b59bf51 ZJS |
5975 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", |
5976 | node, backing_file); | |
252d6267 LP |
5977 | } else { |
5978 | assert(S_ISREG(st.st_mode)); | |
5979 | assert(!backing_file); | |
a26f4a49 | 5980 | |
252d6267 LP |
5981 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
5982 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
5983 | * as fdisk can't accept it anyway. */ | |
5984 | ||
5985 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
5986 | if (writable_fd < 0) | |
5987 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
5988 | } | |
a26f4a49 LP |
5989 | |
5990 | if (!arg_discard) { | |
5991 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
5992 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
5993 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
2b59bf51 | 5994 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 LP |
5995 | |
5996 | /* Fallback to truncation, if fallocate() is not supported. */ | |
5997 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
5998 | } else { | |
252d6267 | 5999 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6000 | log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node); |
a26f4a49 | 6001 | else |
2b59bf51 ZJS |
6002 | log_info("File '%s' grown from %s to %s by allocation.", |
6003 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 | 6004 | |
252d6267 | 6005 | goto done; |
a26f4a49 LP |
6006 | } |
6007 | } | |
6008 | ||
6009 | if (ftruncate(writable_fd, arg_size) < 0) | |
6010 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
2b59bf51 | 6011 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 | 6012 | |
252d6267 | 6013 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6014 | log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size)); |
252d6267 | 6015 | else |
2b59bf51 ZJS |
6016 | log_info("File '%s' grown from %s to %s by truncation.", |
6017 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
252d6267 LP |
6018 | |
6019 | done: | |
f9b3afae LP |
6020 | r = resize_pt(writable_fd); |
6021 | if (r < 0) | |
6022 | return r; | |
6023 | ||
252d6267 LP |
6024 | if (loop_device) { |
6025 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
6026 | if (r < 0) | |
6027 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
6028 | } | |
a26f4a49 LP |
6029 | |
6030 | return 1; | |
6031 | } | |
6032 | ||
170c9823 | 6033 | static int determine_auto_size(Context *c) { |
994b3031 | 6034 | uint64_t sum; |
170c9823 | 6035 | |
ac33e147 | 6036 | assert(c); |
170c9823 | 6037 | |
994b3031 LP |
6038 | sum = round_up_size(GPT_METADATA_SIZE, 4096); |
6039 | ||
170c9823 LP |
6040 | LIST_FOREACH(partitions, p, c->partitions) { |
6041 | uint64_t m; | |
6042 | ||
6043 | if (p->dropped) | |
6044 | continue; | |
6045 | ||
994b3031 | 6046 | m = partition_min_size_with_padding(c, p); |
170c9823 LP |
6047 | if (m > UINT64_MAX - sum) |
6048 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
6049 | ||
6050 | sum += m; | |
6051 | } | |
6052 | ||
2b59bf51 ZJS |
6053 | if (c->total != UINT64_MAX) |
6054 | /* Image already allocated? Then show its size. */ | |
6055 | log_info("Automatically determined minimal disk image size as %s, current image size is %s.", | |
6056 | FORMAT_BYTES(sum), FORMAT_BYTES(c->total)); | |
6057 | else | |
6058 | /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */ | |
6059 | log_info("Automatically determined minimal disk image size as %s.", | |
6060 | FORMAT_BYTES(sum)); | |
170c9823 LP |
6061 | |
6062 | arg_size = sum; | |
6063 | return 0; | |
6064 | } | |
6065 | ||
e594a3b1 | 6066 | static int run(int argc, char *argv[]) { |
252d6267 | 6067 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
252d6267 | 6068 | _cleanup_(umount_and_rmdir_and_freep) char *mounted_dir = NULL; |
e594a3b1 LP |
6069 | _cleanup_(context_freep) Context* context = NULL; |
6070 | _cleanup_free_ char *node = NULL; | |
a26f4a49 | 6071 | _cleanup_close_ int backing_fd = -1; |
252d6267 | 6072 | bool from_scratch, node_is_our_loop = false; |
e594a3b1 LP |
6073 | int r; |
6074 | ||
6075 | log_show_color(true); | |
6076 | log_parse_environment(); | |
6077 | log_open(); | |
6078 | ||
e594a3b1 LP |
6079 | r = parse_argv(argc, argv); |
6080 | if (r <= 0) | |
6081 | return r; | |
6082 | ||
6083 | r = parse_proc_cmdline_factory_reset(); | |
6084 | if (r < 0) | |
6085 | return r; | |
6086 | ||
6087 | r = parse_efi_variable_factory_reset(); | |
6088 | if (r < 0) | |
6089 | return r; | |
6090 | ||
30f19400 LP |
6091 | #if HAVE_LIBCRYPTSETUP |
6092 | cryptsetup_enable_logging(NULL); | |
6093 | #endif | |
6094 | ||
252d6267 LP |
6095 | if (arg_image) { |
6096 | assert(!arg_root); | |
6097 | ||
6098 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
6099 | * systems */ | |
6100 | r = mount_image_privately_interactively( | |
6101 | arg_image, | |
6102 | DISSECT_IMAGE_MOUNT_READ_ONLY | | |
6103 | (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) */ | |
6104 | DISSECT_IMAGE_GPT_ONLY | | |
6105 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
6106 | DISSECT_IMAGE_USR_NO_ROOT | | |
6107 | DISSECT_IMAGE_REQUIRE_ROOT, | |
6108 | &mounted_dir, | |
e330f97a | 6109 | &loop_device); |
252d6267 LP |
6110 | if (r < 0) |
6111 | return r; | |
6112 | ||
6113 | arg_root = strdup(mounted_dir); | |
6114 | if (!arg_root) | |
6115 | return log_oom(); | |
6116 | ||
6117 | if (!arg_node) { | |
6118 | arg_node = strdup(loop_device->node); | |
6119 | if (!arg_node) | |
6120 | return log_oom(); | |
6121 | ||
3d62af7d | 6122 | /* Remember that the device we are about to manipulate is actually the one we |
252d6267 LP |
6123 | * allocated here, and thus to increase its backing file we know what to do */ |
6124 | node_is_our_loop = true; | |
6125 | } | |
6126 | } | |
6127 | ||
e594a3b1 LP |
6128 | context = context_new(arg_seed); |
6129 | if (!context) | |
6130 | return log_oom(); | |
6131 | ||
224c853f RP |
6132 | strv_uniq(arg_definitions); |
6133 | ||
e594a3b1 LP |
6134 | r = context_read_definitions(context, arg_definitions, arg_root); |
6135 | if (r < 0) | |
6136 | return r; | |
6137 | ||
a26f4a49 | 6138 | if (context->n_partitions <= 0 && arg_empty == EMPTY_REFUSE) { |
e2d65cd2 | 6139 | log_info("Didn't find any partition definition files, nothing to do."); |
0ae5ffe0 | 6140 | return 0; |
e2d65cd2 | 6141 | } |
0ae5ffe0 | 6142 | |
a26f4a49 | 6143 | r = find_root(&node, &backing_fd); |
0ae5ffe0 YW |
6144 | if (r < 0) |
6145 | return r; | |
6146 | ||
a26f4a49 | 6147 | if (arg_size != UINT64_MAX) { |
252d6267 LP |
6148 | r = resize_backing_fd( |
6149 | node, | |
6150 | &backing_fd, | |
6151 | node_is_our_loop ? arg_image : NULL, | |
6152 | node_is_our_loop ? loop_device : NULL); | |
a26f4a49 LP |
6153 | if (r < 0) |
6154 | return r; | |
6155 | } | |
6156 | ||
6157 | r = context_load_partition_table(context, node, &backing_fd); | |
e594a3b1 LP |
6158 | if (r == -EHWPOISON) |
6159 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
6160 | * really an error when called at boot. */ | |
6161 | if (r < 0) | |
6162 | return r; | |
6163 | from_scratch = r > 0; /* Starting from scratch */ | |
6164 | ||
6165 | if (arg_can_factory_reset) { | |
6166 | r = context_can_factory_reset(context); | |
6167 | if (r < 0) | |
6168 | return r; | |
6169 | if (r == 0) | |
6170 | return EXIT_FAILURE; | |
6171 | ||
6172 | return 0; | |
6173 | } | |
6174 | ||
6175 | r = context_factory_reset(context, from_scratch); | |
6176 | if (r < 0) | |
6177 | return r; | |
6178 | if (r > 0) { | |
6179 | /* We actually did a factory reset! */ | |
6180 | r = remove_efi_variable_factory_reset(); | |
6181 | if (r < 0) | |
6182 | return r; | |
6183 | ||
6184 | /* Reload the reduced partition table */ | |
6185 | context_unload_partition_table(context); | |
a26f4a49 | 6186 | r = context_load_partition_table(context, node, &backing_fd); |
e594a3b1 LP |
6187 | if (r < 0) |
6188 | return r; | |
6189 | } | |
6190 | ||
6191 | #if 0 | |
6192 | (void) context_dump_partitions(context, node); | |
6193 | putchar('\n'); | |
6194 | #endif | |
6195 | ||
6196 | r = context_read_seed(context, arg_root); | |
6197 | if (r < 0) | |
6198 | return r; | |
6199 | ||
8bbbdfd7 DDM |
6200 | /* Make sure each partition has a unique UUID and unique label */ |
6201 | r = context_acquire_partition_uuids_and_labels(context); | |
6202 | if (r < 0) | |
6203 | return r; | |
6204 | ||
c4a87b76 DDM |
6205 | r = context_minimize(context); |
6206 | if (r < 0) | |
6207 | return r; | |
6208 | ||
757bc2e4 | 6209 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
6210 | r = context_open_copy_block_paths( |
6211 | context, | |
7802194a | 6212 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
6213 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
6214 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
6215 | if (r < 0) |
6216 | return r; | |
6217 | ||
170c9823 LP |
6218 | if (arg_size_auto) { |
6219 | r = determine_auto_size(context); | |
6220 | if (r < 0) | |
6221 | return r; | |
6222 | ||
6223 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
6224 | context_unload_partition_table(context); | |
6225 | ||
ac33e147 | 6226 | assert(arg_size != UINT64_MAX); |
252d6267 LP |
6227 | r = resize_backing_fd( |
6228 | node, | |
6229 | &backing_fd, | |
6230 | node_is_our_loop ? arg_image : NULL, | |
6231 | node_is_our_loop ? loop_device : NULL); | |
170c9823 LP |
6232 | if (r < 0) |
6233 | return r; | |
6234 | ||
6235 | r = context_load_partition_table(context, node, &backing_fd); | |
6236 | if (r < 0) | |
6237 | return r; | |
6238 | } | |
6239 | ||
e594a3b1 LP |
6240 | /* First try to fit new partitions in, dropping by priority until it fits */ |
6241 | for (;;) { | |
14a4c4ed LP |
6242 | uint64_t largest_free_area; |
6243 | ||
6244 | if (context_allocate_partitions(context, &largest_free_area)) | |
e594a3b1 LP |
6245 | break; /* Success! */ |
6246 | ||
9ccceb9d | 6247 | if (!context_drop_or_foreignize_one_priority(context)) { |
d17db7b2 | 6248 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), |
14a4c4ed | 6249 | "Can't fit requested partitions into available free space (%s), refusing.", |
2b59bf51 | 6250 | FORMAT_BYTES(largest_free_area)); |
d17db7b2 LP |
6251 | determine_auto_size(context); |
6252 | return r; | |
6253 | } | |
e594a3b1 LP |
6254 | } |
6255 | ||
6256 | /* Now assign free space according to the weight logic */ | |
6257 | r = context_grow_partitions(context); | |
6258 | if (r < 0) | |
6259 | return r; | |
6260 | ||
0b7f574f | 6261 | /* Now calculate where each new partition gets placed */ |
e594a3b1 LP |
6262 | context_place_partitions(context); |
6263 | ||
b5b7879a | 6264 | (void) context_dump(context, node, /*late=*/ false); |
a26d463d | 6265 | |
e594a3b1 LP |
6266 | r = context_write_partition_table(context, node, from_scratch); |
6267 | if (r < 0) | |
6268 | return r; | |
6269 | ||
4cee8333 DDM |
6270 | r = context_split(context); |
6271 | if (r < 0) | |
6272 | return r; | |
6273 | ||
b5b7879a DDM |
6274 | (void) context_dump(context, node, /*late=*/ true); |
6275 | ||
e594a3b1 LP |
6276 | return 0; |
6277 | } | |
6278 | ||
6279 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |