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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 | ||
53538e33 | 112 | typedef enum FilterPartitionType { |
81d1098b DDM |
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 | 145 | static sd_id128_t *arg_filter_partitions = NULL; |
d989dd76 | 146 | static size_t arg_n_filter_partitions = 0; |
81d1098b | 147 | static FilterPartitionsType arg_filter_partitions_type = FILTER_PARTITIONS_NONE; |
7d505753 DDM |
148 | static sd_id128_t *arg_skip_partitions = NULL; |
149 | static size_t arg_n_skip_partitions = 0; | |
e594a3b1 LP |
150 | |
151 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 152 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
224c853f | 153 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep); |
b9df3536 | 154 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
b456191d DDM |
155 | STATIC_DESTRUCTOR_REGISTER(arg_private_key, EVP_PKEY_freep); |
156 | STATIC_DESTRUCTOR_REGISTER(arg_certificate, X509_freep); | |
889914ef | 157 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
02ef97cd | 158 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep); |
81d1098b | 159 | STATIC_DESTRUCTOR_REGISTER(arg_filter_partitions, freep); |
e594a3b1 LP |
160 | |
161 | typedef struct Partition Partition; | |
162 | typedef struct FreeArea FreeArea; | |
163 | typedef struct Context Context; | |
164 | ||
889914ef LP |
165 | typedef enum EncryptMode { |
166 | ENCRYPT_OFF, | |
167 | ENCRYPT_KEY_FILE, | |
168 | ENCRYPT_TPM2, | |
169 | ENCRYPT_KEY_FILE_TPM2, | |
170 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 171 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
172 | } EncryptMode; |
173 | ||
b5b7879a DDM |
174 | typedef enum VerityMode { |
175 | VERITY_OFF, | |
176 | VERITY_DATA, | |
177 | VERITY_HASH, | |
b456191d | 178 | VERITY_SIG, |
b5b7879a DDM |
179 | _VERITY_MODE_MAX, |
180 | _VERITY_MODE_INVALID = -EINVAL, | |
181 | } VerityMode; | |
182 | ||
e594a3b1 LP |
183 | struct Partition { |
184 | char *definition_path; | |
39fc0174 | 185 | char **drop_in_files; |
e594a3b1 | 186 | |
22e932f4 | 187 | GptPartitionType type; |
e594a3b1 | 188 | sd_id128_t current_uuid, new_uuid; |
11749b61 | 189 | bool new_uuid_is_set; |
e594a3b1 | 190 | char *current_label, *new_label; |
8bbbdfd7 | 191 | sd_id128_t fs_uuid; |
e594a3b1 LP |
192 | |
193 | bool dropped; | |
194 | bool factory_reset; | |
195 | int32_t priority; | |
196 | ||
197 | uint32_t weight, padding_weight; | |
198 | ||
199 | uint64_t current_size, new_size; | |
200 | uint64_t size_min, size_max; | |
201 | ||
202 | uint64_t current_padding, new_padding; | |
203 | uint64_t padding_min, padding_max; | |
204 | ||
205 | uint64_t partno; | |
206 | uint64_t offset; | |
207 | ||
208 | struct fdisk_partition *current_partition; | |
209 | struct fdisk_partition *new_partition; | |
210 | FreeArea *padding_area; | |
211 | FreeArea *allocated_to_area; | |
212 | ||
757bc2e4 | 213 | char *copy_blocks_path; |
5c08da58 | 214 | bool copy_blocks_auto; |
585c5c75 | 215 | const char *copy_blocks_root; |
757bc2e4 LP |
216 | int copy_blocks_fd; |
217 | uint64_t copy_blocks_size; | |
218 | ||
53171c04 | 219 | char *format; |
8a794850 | 220 | char **copy_files; |
d83d8048 | 221 | char **make_directories; |
889914ef | 222 | EncryptMode encrypt; |
b5b7879a DDM |
223 | VerityMode verity; |
224 | char *verity_match_key; | |
c4a87b76 | 225 | bool minimize; |
53171c04 | 226 | |
e73309c5 | 227 | uint64_t gpt_flags; |
ff0771bf | 228 | int no_auto; |
e73309c5 | 229 | int read_only; |
1c41c1dc | 230 | int growfs; |
e73309c5 | 231 | |
b5b7879a DDM |
232 | uint8_t *roothash; |
233 | size_t roothash_size; | |
234 | ||
4cee8333 DDM |
235 | char *split_name_format; |
236 | char *split_name_resolved; | |
237 | ||
b5b7879a DDM |
238 | Partition *siblings[_VERITY_MODE_MAX]; |
239 | ||
e594a3b1 LP |
240 | LIST_FIELDS(Partition, partitions); |
241 | }; | |
242 | ||
243 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
244 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
245 | ||
246 | struct FreeArea { | |
247 | Partition *after; | |
248 | uint64_t size; | |
249 | uint64_t allocated; | |
250 | }; | |
251 | ||
252 | struct Context { | |
253 | LIST_HEAD(Partition, partitions); | |
254 | size_t n_partitions; | |
255 | ||
256 | FreeArea **free_areas; | |
319a4f4b | 257 | size_t n_free_areas; |
e594a3b1 LP |
258 | |
259 | uint64_t start, end, total; | |
260 | ||
261 | struct fdisk_context *fdisk_context; | |
994b3031 LP |
262 | uint64_t sector_size; |
263 | uint64_t grain_size; | |
e594a3b1 LP |
264 | |
265 | sd_id128_t seed; | |
266 | }; | |
267 | ||
889914ef LP |
268 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
269 | [ENCRYPT_OFF] = "off", | |
270 | [ENCRYPT_KEY_FILE] = "key-file", | |
271 | [ENCRYPT_TPM2] = "tpm2", | |
272 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
273 | }; | |
274 | ||
b5b7879a DDM |
275 | static const char *verity_mode_table[_VERITY_MODE_MAX] = { |
276 | [VERITY_OFF] = "off", | |
277 | [VERITY_DATA] = "data", | |
278 | [VERITY_HASH] = "hash", | |
b456191d | 279 | [VERITY_SIG] = "signature", |
b5b7879a DDM |
280 | }; |
281 | ||
2709d029 | 282 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); |
86bebe38 | 283 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode); |
889914ef | 284 | |
e594a3b1 LP |
285 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
286 | return (v / p) * p; | |
287 | } | |
288 | ||
289 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
290 | ||
291 | v = DIV_ROUND_UP(v, p); | |
292 | ||
293 | if (v > UINT64_MAX / p) | |
294 | return UINT64_MAX; /* overflow */ | |
295 | ||
296 | return v * p; | |
297 | } | |
298 | ||
299 | static Partition *partition_new(void) { | |
300 | Partition *p; | |
301 | ||
302 | p = new(Partition, 1); | |
303 | if (!p) | |
304 | return NULL; | |
305 | ||
306 | *p = (Partition) { | |
307 | .weight = 1000, | |
308 | .padding_weight = 0, | |
309 | .current_size = UINT64_MAX, | |
310 | .new_size = UINT64_MAX, | |
311 | .size_min = UINT64_MAX, | |
312 | .size_max = UINT64_MAX, | |
313 | .current_padding = UINT64_MAX, | |
314 | .new_padding = UINT64_MAX, | |
315 | .padding_min = UINT64_MAX, | |
316 | .padding_max = UINT64_MAX, | |
317 | .partno = UINT64_MAX, | |
318 | .offset = UINT64_MAX, | |
757bc2e4 LP |
319 | .copy_blocks_fd = -1, |
320 | .copy_blocks_size = UINT64_MAX, | |
ff0771bf | 321 | .no_auto = -1, |
e73309c5 | 322 | .read_only = -1, |
1c41c1dc | 323 | .growfs = -1, |
e594a3b1 LP |
324 | }; |
325 | ||
326 | return p; | |
327 | } | |
328 | ||
329 | static Partition* partition_free(Partition *p) { | |
330 | if (!p) | |
331 | return NULL; | |
332 | ||
333 | free(p->current_label); | |
334 | free(p->new_label); | |
335 | free(p->definition_path); | |
39fc0174 | 336 | strv_free(p->drop_in_files); |
e594a3b1 LP |
337 | |
338 | if (p->current_partition) | |
339 | fdisk_unref_partition(p->current_partition); | |
340 | if (p->new_partition) | |
341 | fdisk_unref_partition(p->new_partition); | |
342 | ||
757bc2e4 LP |
343 | free(p->copy_blocks_path); |
344 | safe_close(p->copy_blocks_fd); | |
345 | ||
53171c04 | 346 | free(p->format); |
8a794850 | 347 | strv_free(p->copy_files); |
d83d8048 | 348 | strv_free(p->make_directories); |
b5b7879a DDM |
349 | free(p->verity_match_key); |
350 | ||
351 | free(p->roothash); | |
53171c04 | 352 | |
4cee8333 DDM |
353 | free(p->split_name_format); |
354 | free(p->split_name_resolved); | |
355 | ||
e594a3b1 LP |
356 | return mfree(p); |
357 | } | |
358 | ||
9ccceb9d YW |
359 | static void partition_foreignize(Partition *p) { |
360 | assert(p); | |
361 | assert(PARTITION_EXISTS(p)); | |
362 | ||
363 | /* Reset several parameters set through definition file to make the partition foreign. */ | |
364 | ||
9ccceb9d YW |
365 | p->definition_path = mfree(p->definition_path); |
366 | p->drop_in_files = strv_free(p->drop_in_files); | |
367 | ||
368 | p->copy_blocks_path = mfree(p->copy_blocks_path); | |
369 | p->copy_blocks_fd = safe_close(p->copy_blocks_fd); | |
585c5c75 | 370 | p->copy_blocks_root = NULL; |
9ccceb9d YW |
371 | |
372 | p->format = mfree(p->format); | |
373 | p->copy_files = strv_free(p->copy_files); | |
374 | p->make_directories = strv_free(p->make_directories); | |
375 | p->verity_match_key = mfree(p->verity_match_key); | |
376 | ||
9ccceb9d YW |
377 | p->priority = 0; |
378 | p->weight = 1000; | |
379 | p->padding_weight = 0; | |
380 | p->size_min = UINT64_MAX; | |
381 | p->size_max = UINT64_MAX; | |
382 | p->padding_min = UINT64_MAX; | |
383 | p->padding_max = UINT64_MAX; | |
384 | p->no_auto = -1; | |
385 | p->read_only = -1; | |
386 | p->growfs = -1; | |
387 | p->verity = VERITY_OFF; | |
388 | } | |
389 | ||
7d505753 | 390 | static bool partition_exclude(const Partition *p) { |
81d1098b DDM |
391 | assert(p); |
392 | ||
393 | if (arg_filter_partitions_type == FILTER_PARTITIONS_NONE) | |
394 | return false; | |
395 | ||
d989dd76 | 396 | for (size_t i = 0; i < arg_n_filter_partitions; i++) |
81d1098b DDM |
397 | if (sd_id128_equal(p->type.uuid, arg_filter_partitions[i])) |
398 | return arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE; | |
399 | ||
400 | return arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE; | |
401 | } | |
402 | ||
7d505753 DDM |
403 | static bool partition_skip(const Partition *p) { |
404 | assert(p); | |
405 | ||
406 | for (size_t i = 0; i < arg_n_skip_partitions; i++) | |
407 | if (sd_id128_equal(p->type.uuid, arg_skip_partitions[i])) | |
408 | return true; | |
409 | ||
410 | return false; | |
411 | } | |
412 | ||
e594a3b1 LP |
413 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { |
414 | if (!p) | |
415 | return NULL; | |
416 | ||
417 | LIST_REMOVE(partitions, context->partitions, p); | |
418 | ||
419 | assert(context->n_partitions > 0); | |
420 | context->n_partitions--; | |
421 | ||
422 | return partition_free(p); | |
423 | } | |
424 | ||
425 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
426 | ||
427 | static Context *context_new(sd_id128_t seed) { | |
428 | Context *context; | |
429 | ||
430 | context = new(Context, 1); | |
431 | if (!context) | |
432 | return NULL; | |
433 | ||
434 | *context = (Context) { | |
435 | .start = UINT64_MAX, | |
436 | .end = UINT64_MAX, | |
437 | .total = UINT64_MAX, | |
438 | .seed = seed, | |
439 | }; | |
440 | ||
441 | return context; | |
442 | } | |
443 | ||
444 | static void context_free_free_areas(Context *context) { | |
445 | assert(context); | |
446 | ||
447 | for (size_t i = 0; i < context->n_free_areas; i++) | |
448 | free(context->free_areas[i]); | |
449 | ||
450 | context->free_areas = mfree(context->free_areas); | |
451 | context->n_free_areas = 0; | |
e594a3b1 LP |
452 | } |
453 | ||
454 | static Context *context_free(Context *context) { | |
455 | if (!context) | |
456 | return NULL; | |
457 | ||
458 | while (context->partitions) | |
459 | partition_unlink_and_free(context, context->partitions); | |
460 | assert(context->n_partitions == 0); | |
461 | ||
462 | context_free_free_areas(context); | |
463 | ||
464 | if (context->fdisk_context) | |
465 | fdisk_unref_context(context->fdisk_context); | |
466 | ||
467 | return mfree(context); | |
468 | } | |
469 | ||
470 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
471 | ||
472 | static int context_add_free_area( | |
473 | Context *context, | |
474 | uint64_t size, | |
475 | Partition *after) { | |
476 | ||
477 | FreeArea *a; | |
478 | ||
479 | assert(context); | |
480 | assert(!after || !after->padding_area); | |
481 | ||
319a4f4b | 482 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
483 | return -ENOMEM; |
484 | ||
485 | a = new(FreeArea, 1); | |
486 | if (!a) | |
487 | return -ENOMEM; | |
488 | ||
489 | *a = (FreeArea) { | |
490 | .size = size, | |
491 | .after = after, | |
492 | }; | |
493 | ||
494 | context->free_areas[context->n_free_areas++] = a; | |
495 | ||
496 | if (after) | |
497 | after->padding_area = a; | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
9ccceb9d YW |
502 | static void partition_drop_or_foreignize(Partition *p) { |
503 | if (!p || p->dropped || PARTITION_IS_FOREIGN(p)) | |
504 | return; | |
505 | ||
506 | if (PARTITION_EXISTS(p)) { | |
507 | log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.", | |
508 | strna(p->current_label ?: p->new_label), p->priority); | |
509 | ||
510 | /* Handle the partition as foreign. Do not set dropped flag. */ | |
511 | partition_foreignize(p); | |
512 | } else { | |
513 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", | |
514 | p->definition_path, p->priority); | |
515 | ||
516 | p->dropped = true; | |
517 | p->allocated_to_area = NULL; | |
518 | } | |
519 | } | |
520 | ||
521 | static bool context_drop_or_foreignize_one_priority(Context *context) { | |
e594a3b1 | 522 | int32_t priority = 0; |
e594a3b1 LP |
523 | |
524 | LIST_FOREACH(partitions, p, context->partitions) { | |
525 | if (p->dropped) | |
526 | continue; | |
e594a3b1 | 527 | |
9ccceb9d | 528 | priority = MAX(priority, p->priority); |
e594a3b1 LP |
529 | } |
530 | ||
531 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
532 | * least one existing priority */ | |
9ccceb9d | 533 | if (priority <= 0) |
e594a3b1 LP |
534 | return false; |
535 | ||
536 | LIST_FOREACH(partitions, p, context->partitions) { | |
537 | if (p->priority < priority) | |
538 | continue; | |
539 | ||
9ccceb9d | 540 | partition_drop_or_foreignize(p); |
b5b7879a DDM |
541 | |
542 | /* We ensure that all verity sibling partitions have the same priority, so it's safe | |
543 | * to drop all siblings here as well. */ | |
544 | ||
9ccceb9d YW |
545 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) |
546 | partition_drop_or_foreignize(p->siblings[mode]); | |
e594a3b1 LP |
547 | } |
548 | ||
549 | return true; | |
550 | } | |
551 | ||
a80701e6 | 552 | static uint64_t partition_min_size(const Context *context, const Partition *p) { |
e594a3b1 LP |
553 | uint64_t sz; |
554 | ||
994b3031 LP |
555 | assert(context); |
556 | assert(p); | |
557 | ||
e594a3b1 LP |
558 | /* Calculate the disk space we really need at minimum for this partition. If the partition already |
559 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
560 | * than 4K. |
561 | * | |
562 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
563 | |
564 | if (PARTITION_IS_FOREIGN(p)) { | |
565 | /* Don't allow changing size of partitions not managed by us */ | |
566 | assert(p->current_size != UINT64_MAX); | |
567 | return p->current_size; | |
568 | } | |
569 | ||
b456191d DDM |
570 | if (p->verity == VERITY_SIG) |
571 | return VERITY_SIG_SIZE; | |
572 | ||
fb08381c | 573 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 574 | |
170c9823 LP |
575 | if (!PARTITION_EXISTS(p)) { |
576 | uint64_t d = 0; | |
577 | ||
889914ef | 578 | if (p->encrypt != ENCRYPT_OFF) |
48a09a8f | 579 | d += round_up_size(LUKS2_METADATA_KEEP_FREE, context->grain_size); |
170c9823 LP |
580 | |
581 | if (p->copy_blocks_size != UINT64_MAX) | |
994b3031 | 582 | d += round_up_size(p->copy_blocks_size, context->grain_size); |
889914ef | 583 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
584 | uint64_t f; |
585 | ||
586 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
994b3031 LP |
587 | f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX; |
588 | d += f == UINT64_MAX ? context->grain_size : f; | |
170c9823 LP |
589 | } |
590 | ||
591 | if (d > sz) | |
592 | sz = d; | |
593 | } | |
757bc2e4 | 594 | |
994b3031 | 595 | return MAX(round_up_size(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, context->grain_size), sz); |
e594a3b1 LP |
596 | } |
597 | ||
994b3031 LP |
598 | static uint64_t partition_max_size(const Context *context, const Partition *p) { |
599 | uint64_t sm; | |
600 | ||
e594a3b1 LP |
601 | /* Calculate how large the partition may become at max. This is generally the configured maximum |
602 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
603 | * since we never want to shrink partitions. */ | |
604 | ||
994b3031 LP |
605 | assert(context); |
606 | assert(p); | |
607 | ||
e594a3b1 LP |
608 | if (PARTITION_IS_FOREIGN(p)) { |
609 | /* Don't allow changing size of partitions not managed by us */ | |
610 | assert(p->current_size != UINT64_MAX); | |
611 | return p->current_size; | |
612 | } | |
613 | ||
b456191d DDM |
614 | if (p->verity == VERITY_SIG) |
615 | return VERITY_SIG_SIZE; | |
616 | ||
822d9b9a YW |
617 | if (p->size_max == UINT64_MAX) |
618 | return UINT64_MAX; | |
619 | ||
994b3031 LP |
620 | sm = round_down_size(p->size_max, context->grain_size); |
621 | ||
e594a3b1 | 622 | if (p->current_size != UINT64_MAX) |
b0fbf90b | 623 | sm = MAX(p->current_size, sm); |
e594a3b1 | 624 | |
b0fbf90b | 625 | return MAX(partition_min_size(context, p), sm); |
e594a3b1 LP |
626 | } |
627 | ||
a801bb01 YW |
628 | static uint64_t partition_min_padding(const Partition *p) { |
629 | assert(p); | |
630 | return p->padding_min != UINT64_MAX ? p->padding_min : 0; | |
631 | } | |
632 | ||
633 | static uint64_t partition_max_padding(const Partition *p) { | |
634 | assert(p); | |
635 | return p->padding_max; | |
636 | } | |
637 | ||
994b3031 | 638 | static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) { |
e594a3b1 LP |
639 | uint64_t sz; |
640 | ||
641 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
642 | * takes user configured padding into account as well as any additional whitespace needed to align | |
643 | * the next partition to 4K again. */ | |
644 | ||
994b3031 LP |
645 | assert(context); |
646 | assert(p); | |
647 | ||
a801bb01 | 648 | sz = partition_min_size(context, p) + partition_min_padding(p); |
e594a3b1 LP |
649 | |
650 | if (PARTITION_EXISTS(p)) { | |
651 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
652 | assert(p->offset != UINT64_MAX); | |
994b3031 | 653 | return round_up_size(p->offset + sz, context->grain_size) - p->offset; |
e594a3b1 LP |
654 | } |
655 | ||
656 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
994b3031 | 657 | return round_up_size(sz, context->grain_size); |
e594a3b1 LP |
658 | } |
659 | ||
660 | static uint64_t free_area_available(const FreeArea *a) { | |
661 | assert(a); | |
662 | ||
663 | /* Determines how much of this free area is not allocated yet */ | |
664 | ||
665 | assert(a->size >= a->allocated); | |
666 | return a->size - a->allocated; | |
667 | } | |
668 | ||
58b06ac1 | 669 | static uint64_t free_area_current_end(Context *context, const FreeArea *a) { |
994b3031 LP |
670 | assert(context); |
671 | assert(a); | |
672 | ||
58b06ac1 YW |
673 | if (!a->after) |
674 | return free_area_available(a); | |
e594a3b1 | 675 | |
58b06ac1 YW |
676 | assert(a->after->offset != UINT64_MAX); |
677 | assert(a->after->current_size != UINT64_MAX); | |
e594a3b1 | 678 | |
58b06ac1 YW |
679 | /* Calculate where the free area ends, based on the offset of the partition preceding it. */ |
680 | return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a); | |
681 | } | |
e594a3b1 | 682 | |
58b06ac1 YW |
683 | static uint64_t free_area_min_end(Context *context, const FreeArea *a) { |
684 | assert(context); | |
685 | assert(a); | |
e594a3b1 | 686 | |
58b06ac1 YW |
687 | if (!a->after) |
688 | return 0; | |
e594a3b1 | 689 | |
58b06ac1 YW |
690 | assert(a->after->offset != UINT64_MAX); |
691 | assert(a->after->current_size != UINT64_MAX); | |
1052a114 | 692 | |
58b06ac1 YW |
693 | /* Calculate where the partition would end when we give it as much as it needs. */ |
694 | return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size); | |
695 | } | |
696 | ||
697 | static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) { | |
698 | assert(context); | |
699 | assert(a); | |
700 | ||
701 | /* Similar to free_area_available(), but takes into account that the required size and padding of the | |
702 | * preceding partition is honoured. */ | |
e594a3b1 | 703 | |
58b06ac1 | 704 | return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a)); |
e594a3b1 LP |
705 | } |
706 | ||
994b3031 LP |
707 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) { |
708 | assert(context); | |
709 | ||
710 | return CMP(free_area_available_for_new_partitions(context, *a), | |
711 | free_area_available_for_new_partitions(context, *b)); | |
e594a3b1 LP |
712 | } |
713 | ||
994b3031 LP |
714 | static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) { |
715 | assert(context); | |
e594a3b1 | 716 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ |
184cf99a | 717 | assert(amount <= total); |
994b3031 | 718 | return LESS_BY(total, round_up_size(amount, context->grain_size)); |
e594a3b1 LP |
719 | } |
720 | ||
721 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
722 | assert(amount <= total); | |
723 | return total - amount; | |
724 | } | |
725 | ||
14a4c4ed | 726 | static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) { |
e594a3b1 LP |
727 | assert(context); |
728 | ||
f39cf264 YW |
729 | /* This may be called multiple times. Reset previous assignments. */ |
730 | for (size_t i = 0; i < context->n_free_areas; i++) | |
731 | context->free_areas[i]->allocated = 0; | |
732 | ||
14a4c4ed | 733 | /* Sort free areas by size, putting smallest first */ |
994b3031 | 734 | typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context); |
e594a3b1 | 735 | |
14a4c4ed LP |
736 | /* In any case return size of the largest free area (i.e. not the size of all free areas |
737 | * combined!) */ | |
738 | if (ret_largest_free_area) | |
739 | *ret_largest_free_area = | |
740 | context->n_free_areas == 0 ? 0 : | |
994b3031 | 741 | free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]); |
14a4c4ed | 742 | |
cdbcc339 YW |
743 | /* Check that each existing partition can fit its area. */ |
744 | for (size_t i = 0; i < context->n_free_areas; i++) | |
745 | if (free_area_current_end(context, context->free_areas[i]) < | |
746 | free_area_min_end(context, context->free_areas[i])) | |
747 | return false; | |
748 | ||
14a4c4ed | 749 | /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */ |
e594a3b1 LP |
750 | LIST_FOREACH(partitions, p, context->partitions) { |
751 | bool fits = false; | |
752 | uint64_t required; | |
753 | FreeArea *a = NULL; | |
754 | ||
755 | /* Skip partitions we already dropped or that already exist */ | |
756 | if (p->dropped || PARTITION_EXISTS(p)) | |
757 | continue; | |
758 | ||
e594a3b1 | 759 | /* How much do we need to fit? */ |
994b3031 LP |
760 | required = partition_min_size_with_padding(context, p); |
761 | assert(required % context->grain_size == 0); | |
e594a3b1 LP |
762 | |
763 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
764 | a = context->free_areas[i]; | |
765 | ||
994b3031 | 766 | if (free_area_available_for_new_partitions(context, a) >= required) { |
e594a3b1 LP |
767 | fits = true; |
768 | break; | |
769 | } | |
770 | } | |
771 | ||
772 | if (!fits) | |
773 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
774 | ||
775 | /* Assign the partition to this free area */ | |
776 | p->allocated_to_area = a; | |
777 | ||
778 | /* Budget the minimal partition size */ | |
779 | a->allocated += required; | |
780 | } | |
781 | ||
782 | return true; | |
783 | } | |
784 | ||
785 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
786 | uint64_t weight_sum = 0; | |
e594a3b1 LP |
787 | |
788 | assert(context); | |
789 | assert(a); | |
790 | assert(ret); | |
791 | ||
792 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
793 | ||
794 | LIST_FOREACH(partitions, p, context->partitions) { | |
795 | if (p->padding_area != a && p->allocated_to_area != a) | |
796 | continue; | |
797 | ||
798 | if (p->weight > UINT64_MAX - weight_sum) | |
799 | goto overflow_sum; | |
800 | weight_sum += p->weight; | |
801 | ||
802 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
803 | goto overflow_sum; | |
804 | weight_sum += p->padding_weight; | |
805 | } | |
806 | ||
807 | *ret = weight_sum; | |
808 | return 0; | |
809 | ||
810 | overflow_sum: | |
811 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64bit range, refusing."); | |
812 | } | |
813 | ||
0245e15a | 814 | static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) { |
e594a3b1 | 815 | assert(weight_sum >= weight); |
e594a3b1 | 816 | |
0245e15a YW |
817 | for (;;) { |
818 | if (weight == 0) | |
819 | return 0; | |
820 | if (weight == weight_sum) | |
821 | return value; | |
822 | if (value <= UINT64_MAX / weight) | |
823 | return value * weight / weight_sum; | |
824 | ||
825 | /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the | |
826 | * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down: | |
827 | * - the sum of scale_by_weight() for all weights must not be larger than the input value, | |
828 | * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */ | |
829 | weight_sum = DIV_ROUND_UP(weight_sum, 2); | |
830 | weight /= 2; | |
e594a3b1 | 831 | } |
e594a3b1 LP |
832 | } |
833 | ||
834 | typedef enum GrowPartitionPhase { | |
bf99aed6 YW |
835 | /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */ |
836 | PHASE_FOREIGN, | |
837 | ||
e594a3b1 LP |
838 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ |
839 | PHASE_OVERCHARGE, | |
840 | ||
841 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
842 | PHASE_UNDERCHARGE, | |
843 | ||
844 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
845 | PHASE_DISTRIBUTE, | |
ae0613c6 LP |
846 | |
847 | _GROW_PARTITION_PHASE_MAX, | |
e594a3b1 LP |
848 | } GrowPartitionPhase; |
849 | ||
0245e15a | 850 | static bool context_grow_partitions_phase( |
e594a3b1 LP |
851 | Context *context, |
852 | FreeArea *a, | |
853 | GrowPartitionPhase phase, | |
854 | uint64_t *span, | |
855 | uint64_t *weight_sum) { | |
856 | ||
2a503ad2 YW |
857 | bool try_again = false; |
858 | ||
e594a3b1 LP |
859 | assert(context); |
860 | assert(a); | |
0245e15a YW |
861 | assert(span); |
862 | assert(weight_sum); | |
e594a3b1 LP |
863 | |
864 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
865 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
866 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
867 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
868 | LIST_FOREACH(partitions, p, context->partitions) { | |
869 | ||
870 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 871 | * preceding it, or allocated into it */ |
e594a3b1 LP |
872 | if (p->allocated_to_area != a && p->padding_area != a) |
873 | continue; | |
874 | ||
875 | if (p->new_size == UINT64_MAX) { | |
e594a3b1 | 876 | uint64_t share, rsz, xsz; |
2a503ad2 | 877 | bool charge = false; |
e594a3b1 LP |
878 | |
879 | /* Calculate how much this space this partition needs if everyone would get | |
880 | * the weight based share */ | |
0245e15a | 881 | share = scale_by_weight(*span, p->weight, *weight_sum); |
e594a3b1 | 882 | |
994b3031 LP |
883 | rsz = partition_min_size(context, p); |
884 | xsz = partition_max_size(context, p); | |
e594a3b1 | 885 | |
bf99aed6 YW |
886 | if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) { |
887 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
888 | ||
889 | p->new_size = p->current_size; | |
890 | charge = true; | |
891 | ||
892 | } else if (phase == PHASE_OVERCHARGE && rsz > share) { | |
e594a3b1 LP |
893 | /* This partition needs more than its calculated share. Let's assign |
894 | * it that, and take this partition out of all calculations and start | |
895 | * again. */ | |
896 | ||
897 | p->new_size = rsz; | |
898 | charge = try_again = true; | |
899 | ||
822d9b9a | 900 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
e594a3b1 LP |
901 | /* This partition accepts less than its calculated |
902 | * share. Let's assign it that, and take this partition out | |
903 | * of all calculations and start again. */ | |
904 | ||
905 | p->new_size = xsz; | |
906 | charge = try_again = true; | |
907 | ||
908 | } else if (phase == PHASE_DISTRIBUTE) { | |
909 | /* This partition can accept its calculated share. Let's | |
910 | * assign it. There's no need to restart things here since | |
911 | * assigning this shouldn't impact the shares of the other | |
912 | * partitions. */ | |
913 | ||
d7c46b5e YW |
914 | assert(share >= rsz); |
915 | p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
916 | charge = true; |
917 | } | |
918 | ||
919 | if (charge) { | |
994b3031 | 920 | *span = charge_size(context, *span, p->new_size); |
e594a3b1 LP |
921 | *weight_sum = charge_weight(*weight_sum, p->weight); |
922 | } | |
e594a3b1 LP |
923 | } |
924 | ||
925 | if (p->new_padding == UINT64_MAX) { | |
a801bb01 | 926 | uint64_t share, rsz, xsz; |
2a503ad2 | 927 | bool charge = false; |
e594a3b1 | 928 | |
0245e15a | 929 | share = scale_by_weight(*span, p->padding_weight, *weight_sum); |
e594a3b1 | 930 | |
a801bb01 YW |
931 | rsz = partition_min_padding(p); |
932 | xsz = partition_max_padding(p); | |
933 | ||
934 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
935 | p->new_padding = rsz; | |
e594a3b1 | 936 | charge = try_again = true; |
a801bb01 YW |
937 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
938 | p->new_padding = xsz; | |
e594a3b1 LP |
939 | charge = try_again = true; |
940 | } else if (phase == PHASE_DISTRIBUTE) { | |
d7c46b5e YW |
941 | assert(share >= rsz); |
942 | p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
943 | charge = true; |
944 | } | |
945 | ||
946 | if (charge) { | |
994b3031 | 947 | *span = charge_size(context, *span, p->new_padding); |
e594a3b1 LP |
948 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); |
949 | } | |
e594a3b1 LP |
950 | } |
951 | } | |
952 | ||
2a503ad2 | 953 | return !try_again; |
e594a3b1 LP |
954 | } |
955 | ||
19903a43 YW |
956 | static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) { |
957 | uint64_t m; | |
958 | ||
959 | assert(context); | |
960 | assert(a); | |
961 | assert(p); | |
962 | assert(span); | |
963 | ||
964 | if (*span == 0) | |
965 | return; | |
966 | ||
967 | if (p->allocated_to_area != a) | |
968 | return; | |
969 | ||
970 | if (PARTITION_IS_FOREIGN(p)) | |
971 | return; | |
972 | ||
973 | assert(p->new_size != UINT64_MAX); | |
974 | ||
975 | /* Calculate new size and align. */ | |
976 | m = round_down_size(p->new_size + *span, context->grain_size); | |
977 | /* But ensure this doesn't shrink the size. */ | |
978 | m = MAX(m, p->new_size); | |
979 | /* And ensure this doesn't exceed the maximum size. */ | |
980 | m = MIN(m, partition_max_size(context, p)); | |
981 | ||
982 | assert(m >= p->new_size); | |
983 | ||
984 | *span = charge_size(context, *span, m - p->new_size); | |
985 | p->new_size = m; | |
986 | } | |
987 | ||
e594a3b1 LP |
988 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { |
989 | uint64_t weight_sum = 0, span; | |
990 | int r; | |
991 | ||
992 | assert(context); | |
993 | assert(a); | |
994 | ||
995 | r = context_sum_weights(context, a, &weight_sum); | |
996 | if (r < 0) | |
997 | return r; | |
998 | ||
999 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
1000 | span = a->size; | |
1001 | if (a->after) { | |
1002 | assert(a->after->offset != UINT64_MAX); | |
1003 | assert(a->after->current_size != UINT64_MAX); | |
1004 | ||
994b3031 | 1005 | span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset; |
e594a3b1 LP |
1006 | } |
1007 | ||
0245e15a YW |
1008 | for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;) |
1009 | if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum)) | |
1010 | phase++; /* go to the next phase */ | |
e594a3b1 | 1011 | |
162392b7 | 1012 | /* We still have space left over? Donate to preceding partition if we have one */ |
19903a43 YW |
1013 | if (span > 0 && a->after) |
1014 | context_grow_partition_one(context, a, a->after, &span); | |
e594a3b1 | 1015 | |
162392b7 | 1016 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 | 1017 | * size limit), then let's donate it to whoever wants it. */ |
03677889 | 1018 | if (span > 0) |
e594a3b1 | 1019 | LIST_FOREACH(partitions, p, context->partitions) { |
19903a43 | 1020 | context_grow_partition_one(context, a, p, &span); |
e594a3b1 LP |
1021 | if (span == 0) |
1022 | break; | |
1023 | } | |
e594a3b1 | 1024 | |
162392b7 | 1025 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
1026 | if (span > 0 && a->after) { |
1027 | assert(a->after->new_padding != UINT64_MAX); | |
1028 | a->after->new_padding += span; | |
1029 | } | |
1030 | ||
1031 | return 0; | |
1032 | } | |
1033 | ||
1034 | static int context_grow_partitions(Context *context) { | |
e594a3b1 LP |
1035 | int r; |
1036 | ||
1037 | assert(context); | |
1038 | ||
1039 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
1040 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
1041 | if (r < 0) | |
1042 | return r; | |
1043 | } | |
1044 | ||
1045 | /* All existing partitions that have no free space after them can't change size */ | |
1046 | LIST_FOREACH(partitions, p, context->partitions) { | |
1047 | if (p->dropped) | |
1048 | continue; | |
1049 | ||
1050 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
1051 | /* The algorithm above must have initialized this already */ | |
1052 | assert(p->new_size != UINT64_MAX); | |
1053 | continue; | |
1054 | } | |
1055 | ||
1056 | assert(p->new_size == UINT64_MAX); | |
1057 | p->new_size = p->current_size; | |
1058 | ||
1059 | assert(p->new_padding == UINT64_MAX); | |
1060 | p->new_padding = p->current_padding; | |
1061 | } | |
1062 | ||
1063 | return 0; | |
1064 | } | |
1065 | ||
00428745 | 1066 | static uint64_t find_first_unused_partno(Context *context) { |
e594a3b1 | 1067 | uint64_t partno = 0; |
e594a3b1 LP |
1068 | |
1069 | assert(context); | |
1070 | ||
5f59807d DDM |
1071 | for (partno = 0;; partno++) { |
1072 | bool found = false; | |
1073 | LIST_FOREACH(partitions, p, context->partitions) | |
1074 | if (p->partno != UINT64_MAX && p->partno == partno) | |
1075 | found = true; | |
1076 | if (!found) | |
1077 | break; | |
e594a3b1 LP |
1078 | } |
1079 | ||
00428745 DDM |
1080 | return partno; |
1081 | } | |
1082 | ||
1083 | static void context_place_partitions(Context *context) { | |
1084 | ||
1085 | assert(context); | |
1086 | ||
e594a3b1 LP |
1087 | for (size_t i = 0; i < context->n_free_areas; i++) { |
1088 | FreeArea *a = context->free_areas[i]; | |
2ea7eb00 FS |
1089 | _unused_ uint64_t left; |
1090 | uint64_t start; | |
e594a3b1 LP |
1091 | |
1092 | if (a->after) { | |
1093 | assert(a->after->offset != UINT64_MAX); | |
1094 | assert(a->after->new_size != UINT64_MAX); | |
1095 | assert(a->after->new_padding != UINT64_MAX); | |
1096 | ||
1097 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
1098 | } else | |
1099 | start = context->start; | |
1100 | ||
994b3031 | 1101 | start = round_up_size(start, context->grain_size); |
e594a3b1 LP |
1102 | left = a->size; |
1103 | ||
1104 | LIST_FOREACH(partitions, p, context->partitions) { | |
1105 | if (p->allocated_to_area != a) | |
1106 | continue; | |
1107 | ||
1108 | p->offset = start; | |
00428745 | 1109 | p->partno = find_first_unused_partno(context); |
e594a3b1 LP |
1110 | |
1111 | assert(left >= p->new_size); | |
1112 | start += p->new_size; | |
1113 | left -= p->new_size; | |
1114 | ||
1115 | assert(left >= p->new_padding); | |
1116 | start += p->new_padding; | |
1117 | left -= p->new_padding; | |
1118 | } | |
1119 | } | |
1120 | } | |
1121 | ||
e594a3b1 LP |
1122 | static int config_parse_type( |
1123 | const char *unit, | |
1124 | const char *filename, | |
1125 | unsigned line, | |
1126 | const char *section, | |
1127 | unsigned section_line, | |
1128 | const char *lvalue, | |
1129 | int ltype, | |
1130 | const char *rvalue, | |
1131 | void *data, | |
1132 | void *userdata) { | |
1133 | ||
22e932f4 | 1134 | GptPartitionType *type = ASSERT_PTR(data); |
e594a3b1 LP |
1135 | int r; |
1136 | ||
1137 | assert(rvalue); | |
e594a3b1 | 1138 | |
22e932f4 | 1139 | r = gpt_partition_type_from_string(rvalue, type); |
e594a3b1 LP |
1140 | if (r < 0) |
1141 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
1142 | ||
1143 | return 0; | |
1144 | } | |
1145 | ||
1146 | static int config_parse_label( | |
1147 | const char *unit, | |
1148 | const char *filename, | |
1149 | unsigned line, | |
1150 | const char *section, | |
1151 | unsigned section_line, | |
1152 | const char *lvalue, | |
1153 | int ltype, | |
1154 | const char *rvalue, | |
1155 | void *data, | |
1156 | void *userdata) { | |
1157 | ||
e031166e | 1158 | _cleanup_free_ char *resolved = NULL; |
99534007 | 1159 | char **label = ASSERT_PTR(data); |
e594a3b1 LP |
1160 | int r; |
1161 | ||
1162 | assert(rvalue); | |
e594a3b1 | 1163 | |
be9ce018 LP |
1164 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
1165 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
1166 | ||
de61a04b | 1167 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved); |
e031166e | 1168 | if (r < 0) { |
e459258f | 1169 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
1170 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
1175 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1176 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
1177 | return 0; | |
1178 | } | |
1179 | ||
22a0a36e LP |
1180 | r = gpt_partition_label_valid(resolved); |
1181 | if (r < 0) { | |
1182 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1183 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
1184 | resolved, rvalue); | |
1185 | return 0; | |
1186 | } | |
1187 | if (!r) { | |
e594a3b1 | 1188 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
1189 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
1190 | resolved, rvalue); | |
e594a3b1 LP |
1191 | return 0; |
1192 | } | |
1193 | ||
e031166e | 1194 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1195 | return 0; |
1196 | } | |
1197 | ||
1198 | static int config_parse_weight( | |
1199 | const char *unit, | |
1200 | const char *filename, | |
1201 | unsigned line, | |
1202 | const char *section, | |
1203 | unsigned section_line, | |
1204 | const char *lvalue, | |
1205 | int ltype, | |
1206 | const char *rvalue, | |
1207 | void *data, | |
1208 | void *userdata) { | |
1209 | ||
f126038f | 1210 | uint32_t *w = ASSERT_PTR(data), v; |
e594a3b1 LP |
1211 | int r; |
1212 | ||
1213 | assert(rvalue); | |
e594a3b1 LP |
1214 | |
1215 | r = safe_atou32(rvalue, &v); | |
1216 | if (r < 0) { | |
1217 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1218 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1219 | return 0; | |
1220 | } | |
1221 | ||
1222 | if (v > 1000U*1000U) { | |
c8f3d767 | 1223 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1224 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1225 | return 0; | |
1226 | } | |
1227 | ||
f126038f | 1228 | *w = v; |
e594a3b1 LP |
1229 | return 0; |
1230 | } | |
1231 | ||
1232 | static int config_parse_size4096( | |
1233 | const char *unit, | |
1234 | const char *filename, | |
1235 | unsigned line, | |
1236 | const char *section, | |
1237 | unsigned section_line, | |
1238 | const char *lvalue, | |
1239 | int ltype, | |
1240 | const char *rvalue, | |
1241 | void *data, | |
1242 | void *userdata) { | |
1243 | ||
1244 | uint64_t *sz = data, parsed; | |
1245 | int r; | |
1246 | ||
1247 | assert(rvalue); | |
1248 | assert(data); | |
1249 | ||
1250 | r = parse_size(rvalue, 1024, &parsed); | |
1251 | if (r < 0) | |
c8f3d767 | 1252 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1253 | "Failed to parse size value: %s", rvalue); |
1254 | ||
1255 | if (ltype > 0) | |
1256 | *sz = round_up_size(parsed, 4096); | |
1257 | else if (ltype < 0) | |
1258 | *sz = round_down_size(parsed, 4096); | |
1259 | else | |
1260 | *sz = parsed; | |
1261 | ||
1262 | if (*sz != parsed) | |
e2341b6b DT |
1263 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.", |
1264 | lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz); | |
e594a3b1 LP |
1265 | |
1266 | return 0; | |
1267 | } | |
1268 | ||
53171c04 LP |
1269 | static int config_parse_fstype( |
1270 | const char *unit, | |
1271 | const char *filename, | |
1272 | unsigned line, | |
1273 | const char *section, | |
1274 | unsigned section_line, | |
1275 | const char *lvalue, | |
1276 | int ltype, | |
1277 | const char *rvalue, | |
1278 | void *data, | |
1279 | void *userdata) { | |
1280 | ||
99534007 | 1281 | char **fstype = ASSERT_PTR(data); |
53171c04 LP |
1282 | |
1283 | assert(rvalue); | |
53171c04 LP |
1284 | |
1285 | if (!filename_is_valid(rvalue)) | |
1286 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1287 | "File system type is not valid, refusing: %s", rvalue); | |
1288 | ||
1289 | return free_and_strdup_warn(fstype, rvalue); | |
1290 | } | |
1291 | ||
8a794850 LP |
1292 | static int config_parse_copy_files( |
1293 | const char *unit, | |
1294 | const char *filename, | |
1295 | unsigned line, | |
1296 | const char *section, | |
1297 | unsigned section_line, | |
1298 | const char *lvalue, | |
1299 | int ltype, | |
1300 | const char *rvalue, | |
1301 | void *data, | |
1302 | void *userdata) { | |
1303 | ||
1304 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1305 | const char *p = rvalue, *target; | |
99534007 | 1306 | Partition *partition = ASSERT_PTR(data); |
8a794850 LP |
1307 | int r; |
1308 | ||
1309 | assert(rvalue); | |
8a794850 LP |
1310 | |
1311 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1312 | if (r < 0) | |
1313 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1314 | if (r == 0) { | |
1315 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1316 | return 0; | |
1317 | } | |
1318 | ||
1319 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1320 | if (r < 0) | |
1321 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1322 | if (r == 0) | |
1323 | target = source; /* No target, then it's the same as the source */ | |
1324 | else | |
1325 | target = buffer; | |
1326 | ||
1327 | if (!isempty(p)) | |
1328 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1329 | ||
de61a04b | 1330 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source); |
8a794850 LP |
1331 | if (r < 0) { |
1332 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1333 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1334 | return 0; | |
1335 | } | |
1336 | ||
0ade2213 LP |
1337 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1338 | if (r < 0) | |
8a794850 | 1339 | return 0; |
8a794850 | 1340 | |
de61a04b | 1341 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target); |
8a794850 LP |
1342 | if (r < 0) { |
1343 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1344 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1345 | return 0; | |
1346 | } | |
1347 | ||
0ade2213 LP |
1348 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1349 | if (r < 0) | |
8a794850 | 1350 | return 0; |
8a794850 LP |
1351 | |
1352 | r = strv_consume_pair(&partition->copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); | |
1353 | if (r < 0) | |
1354 | return log_oom(); | |
1355 | ||
1356 | return 0; | |
1357 | } | |
1358 | ||
5c08da58 LP |
1359 | static int config_parse_copy_blocks( |
1360 | const char *unit, | |
1361 | const char *filename, | |
1362 | unsigned line, | |
1363 | const char *section, | |
1364 | unsigned section_line, | |
1365 | const char *lvalue, | |
1366 | int ltype, | |
1367 | const char *rvalue, | |
1368 | void *data, | |
1369 | void *userdata) { | |
1370 | ||
1371 | _cleanup_free_ char *d = NULL; | |
99534007 | 1372 | Partition *partition = ASSERT_PTR(data); |
5c08da58 LP |
1373 | int r; |
1374 | ||
1375 | assert(rvalue); | |
5c08da58 LP |
1376 | |
1377 | if (isempty(rvalue)) { | |
1378 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1379 | partition->copy_blocks_auto = false; | |
1380 | return 0; | |
1381 | } | |
1382 | ||
1383 | if (streq(rvalue, "auto")) { | |
1384 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1385 | partition->copy_blocks_auto = true; | |
585c5c75 | 1386 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1387 | return 0; |
1388 | } | |
1389 | ||
de61a04b | 1390 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
5c08da58 LP |
1391 | if (r < 0) { |
1392 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1393 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1394 | return 0; | |
1395 | } | |
1396 | ||
1397 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1398 | if (r < 0) | |
1399 | return 0; | |
1400 | ||
1401 | free_and_replace(partition->copy_blocks_path, d); | |
1402 | partition->copy_blocks_auto = false; | |
585c5c75 | 1403 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1404 | return 0; |
1405 | } | |
1406 | ||
d83d8048 LP |
1407 | static int config_parse_make_dirs( |
1408 | const char *unit, | |
1409 | const char *filename, | |
1410 | unsigned line, | |
1411 | const char *section, | |
1412 | unsigned section_line, | |
1413 | const char *lvalue, | |
1414 | int ltype, | |
1415 | const char *rvalue, | |
1416 | void *data, | |
1417 | void *userdata) { | |
1418 | ||
99534007 DT |
1419 | Partition *partition = ASSERT_PTR(data); |
1420 | const char *p = ASSERT_PTR(rvalue); | |
d83d8048 LP |
1421 | int r; |
1422 | ||
d83d8048 LP |
1423 | for (;;) { |
1424 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1425 | ||
1426 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1427 | if (r == -ENOMEM) | |
1428 | return log_oom(); | |
1429 | if (r < 0) { | |
1430 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1431 | return 0; | |
1432 | } | |
1433 | if (r == 0) | |
1434 | return 0; | |
1435 | ||
de61a04b | 1436 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
d83d8048 LP |
1437 | if (r < 0) { |
1438 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1439 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1440 | continue; | |
1441 | } | |
1442 | ||
1443 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1444 | if (r < 0) | |
1445 | continue; | |
1446 | ||
1447 | r = strv_consume(&partition->make_directories, TAKE_PTR(d)); | |
1448 | if (r < 0) | |
1449 | return log_oom(); | |
1450 | } | |
1451 | } | |
1452 | ||
889914ef LP |
1453 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1454 | ||
e73309c5 LP |
1455 | static int config_parse_gpt_flags( |
1456 | const char *unit, | |
1457 | const char *filename, | |
1458 | unsigned line, | |
1459 | const char *section, | |
1460 | unsigned section_line, | |
1461 | const char *lvalue, | |
1462 | int ltype, | |
1463 | const char *rvalue, | |
1464 | void *data, | |
1465 | void *userdata) { | |
1466 | ||
99534007 | 1467 | uint64_t *gpt_flags = ASSERT_PTR(data); |
e73309c5 LP |
1468 | int r; |
1469 | ||
1470 | assert(rvalue); | |
e73309c5 LP |
1471 | |
1472 | r = safe_atou64(rvalue, gpt_flags); | |
1473 | if (r < 0) { | |
1474 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1475 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1476 | return 0; | |
1477 | } | |
1478 | ||
1479 | return 0; | |
1480 | } | |
1481 | ||
11749b61 DDM |
1482 | static int config_parse_uuid( |
1483 | const char *unit, | |
1484 | const char *filename, | |
1485 | unsigned line, | |
1486 | const char *section, | |
1487 | unsigned section_line, | |
1488 | const char *lvalue, | |
1489 | int ltype, | |
1490 | const char *rvalue, | |
1491 | void *data, | |
1492 | void *userdata) { | |
1493 | ||
1494 | Partition *partition = ASSERT_PTR(data); | |
1495 | int r; | |
1496 | ||
1497 | if (isempty(rvalue)) { | |
1498 | partition->new_uuid = SD_ID128_NULL; | |
1499 | partition->new_uuid_is_set = false; | |
1500 | return 0; | |
1501 | } | |
1502 | ||
1503 | if (streq(rvalue, "null")) { | |
1504 | partition->new_uuid = SD_ID128_NULL; | |
1505 | partition->new_uuid_is_set = true; | |
1506 | return 0; | |
1507 | } | |
1508 | ||
1509 | r = sd_id128_from_string(rvalue, &partition->new_uuid); | |
1510 | if (r < 0) { | |
1511 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue); | |
1512 | return 0; | |
1513 | } | |
1514 | ||
1515 | partition->new_uuid_is_set = true; | |
1516 | ||
1517 | return 0; | |
1518 | } | |
1519 | ||
b5b7879a DDM |
1520 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF, "Invalid verity mode"); |
1521 | ||
39fc0174 | 1522 | static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) { |
e594a3b1 LP |
1523 | |
1524 | ConfigTableItem table[] = { | |
22e932f4 | 1525 | { "Partition", "Type", config_parse_type, 0, &p->type }, |
4cee8333 DDM |
1526 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, |
1527 | { "Partition", "UUID", config_parse_uuid, 0, p }, | |
1528 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, | |
1529 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1530 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1531 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1532 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1533 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1534 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1535 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1536 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1537 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1538 | { "Partition", "CopyFiles", config_parse_copy_files, 0, p }, | |
1539 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, p }, | |
1540 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
1541 | { "Partition", "Verity", config_parse_verity, 0, &p->verity }, | |
1542 | { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key }, | |
1543 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, | |
1544 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
1545 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, | |
1546 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, | |
1547 | { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format }, | |
c4a87b76 | 1548 | { "Partition", "Minimize", config_parse_bool, 0, &p->minimize }, |
e594a3b1 LP |
1549 | {} |
1550 | }; | |
1551 | int r; | |
39fc0174 RP |
1552 | _cleanup_free_ char *filename = NULL; |
1553 | const char* dropin_dirname; | |
e594a3b1 | 1554 | |
39fc0174 RP |
1555 | r = path_extract_filename(path, &filename); |
1556 | if (r < 0) | |
bef69ae8 | 1557 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); |
39fc0174 RP |
1558 | |
1559 | dropin_dirname = strjoina(filename, ".d"); | |
1560 | ||
1561 | r = config_parse_many( | |
1562 | STRV_MAKE_CONST(path), | |
1563 | conf_file_dirs, | |
1564 | dropin_dirname, | |
1565 | "Partition\0", | |
1566 | config_item_table_lookup, table, | |
1567 | CONFIG_PARSE_WARN, | |
1568 | p, | |
1569 | NULL, | |
1570 | &p->drop_in_files); | |
e594a3b1 LP |
1571 | if (r < 0) |
1572 | return r; | |
1573 | ||
7d505753 DDM |
1574 | if (partition_exclude(p)) |
1575 | return 0; | |
1576 | ||
e594a3b1 LP |
1577 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) |
1578 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1579 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1580 | ||
1581 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1582 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1583 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1584 | ||
22e932f4 | 1585 | if (sd_id128_is_null(p->type.uuid)) |
e594a3b1 LP |
1586 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1587 | "Type= not defined, refusing."); | |
1588 | ||
5c08da58 LP |
1589 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1590 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
53171c04 | 1591 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5c08da58 | 1592 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); |
53171c04 | 1593 | |
d83d8048 | 1594 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1595 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1596 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1597 | ||
5c08da58 | 1598 | 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 | 1599 | /* Pick "ext4" as file system if we are configured to copy files or encrypt the device */ |
8a794850 LP |
1600 | p->format = strdup("ext4"); |
1601 | if (!p->format) | |
1602 | return log_oom(); | |
1603 | } | |
1604 | ||
c4a87b76 DDM |
1605 | if (p->minimize && !p->format) |
1606 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1607 | "Minimize= can only be enabled if Format= is set"); | |
1608 | ||
6d6cefad DDM |
1609 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && !mkfs_supports_root_option(p->format) && geteuid() != 0) |
1610 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EPERM), | |
1611 | "Need to be root to populate %s filesystems with CopyFiles=/MakeDirectories=", | |
1612 | p->format); | |
1613 | ||
0eb23798 DDM |
1614 | if (p->format && fstype_is_ro(p->format) && strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
1615 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1616 | "Cannot format %s filesystem without source files, refusing", p->format); | |
1617 | ||
b5b7879a DDM |
1618 | if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) { |
1619 | r = dlopen_cryptsetup(); | |
1620 | if (r < 0) | |
1621 | return log_syntax(NULL, LOG_ERR, path, 1, r, | |
1622 | "libcryptsetup not found, Verity=/Encrypt= are not supported: %m"); | |
1623 | } | |
1624 | ||
1625 | if (p->verity != VERITY_OFF && !p->verity_match_key) | |
1626 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1627 | "VerityMatchKey= must be set if Verity=%s", verity_mode_to_string(p->verity)); | |
1628 | ||
1629 | if (p->verity == VERITY_OFF && p->verity_match_key) | |
1630 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1631 | "VerityMatchKey= can only be set if Verity= is not \"%s\"", | |
1632 | verity_mode_to_string(p->verity)); | |
1633 | ||
b456191d DDM |
1634 | if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && |
1635 | (p->copy_files || p->copy_blocks_path || p->copy_blocks_auto || p->format || p->make_directories)) | |
b5b7879a DDM |
1636 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1637 | "CopyBlocks=/CopyFiles=/Format=/MakeDirectories= cannot be used with Verity=%s", | |
1638 | verity_mode_to_string(p->verity)); | |
1639 | ||
1640 | if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF) | |
1641 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1642 | "Encrypting verity hash/data partitions is not supported"); | |
1643 | ||
b456191d DDM |
1644 | if (p->verity == VERITY_SIG && !arg_private_key) |
1645 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1646 | "Verity signature partition requested but no private key provided (--private-key=)"); | |
1647 | ||
1648 | if (p->verity == VERITY_SIG && !arg_certificate) | |
1649 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
ba4a5eff | 1650 | "Verity signature partition requested but no PEM certificate provided (--certificate=)"); |
b456191d DDM |
1651 | |
1652 | if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX)) | |
1653 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1654 | "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s", | |
1655 | verity_mode_to_string(p->verity)); | |
1656 | ||
e73309c5 | 1657 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
c1979cd8 | 1658 | if (IN_SET(p->type.designator, PARTITION_ROOT_VERITY, PARTITION_USR_VERITY) && p->read_only < 0) |
e73309c5 LP |
1659 | p->read_only = true; |
1660 | ||
1c41c1dc | 1661 | /* Default to "growfs" on, unless read-only */ |
22e932f4 | 1662 | if (gpt_partition_type_knows_growfs(p->type) && |
1c41c1dc LP |
1663 | p->read_only <= 0) |
1664 | p->growfs = true; | |
1665 | ||
4cee8333 DDM |
1666 | if (!p->split_name_format) { |
1667 | char *s = strdup("%t"); | |
1668 | if (!s) | |
1669 | return log_oom(); | |
1670 | ||
1671 | p->split_name_format = s; | |
1672 | } else if (streq(p->split_name_format, "-")) | |
1673 | p->split_name_format = mfree(p->split_name_format); | |
1674 | ||
7d505753 | 1675 | return 1; |
e594a3b1 LP |
1676 | } |
1677 | ||
b5b7879a DDM |
1678 | static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) { |
1679 | Partition *s = NULL; | |
1680 | ||
1681 | assert(p); | |
1682 | assert(p->verity != VERITY_OFF); | |
1683 | assert(p->verity_match_key); | |
1684 | assert(mode != VERITY_OFF); | |
1685 | assert(p->verity != mode); | |
1686 | assert(ret); | |
1687 | ||
1688 | /* Try to find the matching sibling partition of the given type for a verity partition. For a data | |
af3d3873 YW |
1689 | * partition, this is the corresponding hash partition with the same verity name (and vice versa for |
1690 | * the hash partition). */ | |
b5b7879a DDM |
1691 | |
1692 | LIST_FOREACH(partitions, q, context->partitions) { | |
1693 | if (p == q) | |
1694 | continue; | |
1695 | ||
1696 | if (q->verity != mode) | |
1697 | continue; | |
1698 | ||
1699 | assert(q->verity_match_key); | |
1700 | ||
1701 | if (!streq(p->verity_match_key, q->verity_match_key)) | |
1702 | continue; | |
1703 | ||
1704 | if (s) | |
1705 | return -ENOTUNIQ; | |
1706 | ||
1707 | s = q; | |
1708 | } | |
1709 | ||
1710 | if (!s) | |
1711 | return -ENXIO; | |
1712 | ||
1713 | *ret = s; | |
1714 | ||
1715 | return 0; | |
1716 | } | |
1717 | ||
e594a3b1 LP |
1718 | static int context_read_definitions( |
1719 | Context *context, | |
224c853f | 1720 | char **directories, |
e594a3b1 LP |
1721 | const char *root) { |
1722 | ||
1723 | _cleanup_strv_free_ char **files = NULL; | |
1724 | Partition *last = NULL; | |
e594a3b1 | 1725 | int r; |
39fc0174 | 1726 | const char *const *dirs; |
e594a3b1 LP |
1727 | |
1728 | assert(context); | |
1729 | ||
224c853f | 1730 | dirs = (const char* const*) (directories ?: CONF_PATHS_STRV("repart.d")); |
39fc0174 | 1731 | |
224c853f | 1732 | r = conf_files_list_strv(&files, ".conf", directories ? NULL : root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs); |
e594a3b1 LP |
1733 | if (r < 0) |
1734 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
1735 | ||
1736 | STRV_FOREACH(f, files) { | |
1737 | _cleanup_(partition_freep) Partition *p = NULL; | |
1738 | ||
1739 | p = partition_new(); | |
1740 | if (!p) | |
1741 | return log_oom(); | |
1742 | ||
1743 | p->definition_path = strdup(*f); | |
1744 | if (!p->definition_path) | |
1745 | return log_oom(); | |
1746 | ||
39fc0174 | 1747 | r = partition_read_definition(p, *f, dirs); |
e594a3b1 LP |
1748 | if (r < 0) |
1749 | return r; | |
7d505753 DDM |
1750 | if (r == 0) |
1751 | continue; | |
e594a3b1 LP |
1752 | |
1753 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
1754 | last = TAKE_PTR(p); | |
1755 | context->n_partitions++; | |
1756 | } | |
1757 | ||
b5b7879a DDM |
1758 | /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */ |
1759 | ||
1760 | LIST_FOREACH(partitions, p, context->partitions) { | |
1761 | if (p->verity == VERITY_OFF) | |
1762 | continue; | |
1763 | ||
1764 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
b456191d | 1765 | Partition *q = NULL; |
b5b7879a DDM |
1766 | |
1767 | if (p->verity == mode) | |
1768 | continue; | |
1769 | ||
1770 | if (p->siblings[mode]) | |
1771 | continue; | |
1772 | ||
1773 | r = find_verity_sibling(context, p, mode, &q); | |
8e52ed02 DDM |
1774 | if (r == -ENXIO) { |
1775 | if (mode != VERITY_SIG) | |
1776 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1777 | "Missing verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1778 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
1779 | } else if (r == -ENOTUNIQ) | |
b5b7879a DDM |
1780 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), |
1781 | "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s", | |
1782 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
8e52ed02 DDM |
1783 | else if (r < 0) |
1784 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r, | |
1785 | "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1786 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
b5b7879a | 1787 | |
b456191d DDM |
1788 | if (q) { |
1789 | if (q->priority != p->priority) | |
1790 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1791 | "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s", | |
1792 | p->priority, q->priority, p->verity_match_key); | |
b5b7879a | 1793 | |
b456191d DDM |
1794 | p->siblings[mode] = q; |
1795 | } | |
b5b7879a DDM |
1796 | } |
1797 | } | |
1798 | ||
e594a3b1 LP |
1799 | return 0; |
1800 | } | |
1801 | ||
e594a3b1 LP |
1802 | static int determine_current_padding( |
1803 | struct fdisk_context *c, | |
1804 | struct fdisk_table *t, | |
1805 | struct fdisk_partition *p, | |
994b3031 LP |
1806 | uint64_t secsz, |
1807 | uint64_t grainsz, | |
e594a3b1 LP |
1808 | uint64_t *ret) { |
1809 | ||
1810 | size_t n_partitions; | |
1811 | uint64_t offset, next = UINT64_MAX; | |
1812 | ||
1813 | assert(c); | |
1814 | assert(t); | |
1815 | assert(p); | |
1816 | ||
1817 | if (!fdisk_partition_has_end(p)) | |
1818 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1819 | ||
1820 | offset = fdisk_partition_get_end(p); | |
994b3031 LP |
1821 | assert(offset < UINT64_MAX / secsz); |
1822 | offset *= secsz; | |
e594a3b1 LP |
1823 | |
1824 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 1825 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 LP |
1826 | struct fdisk_partition *q; |
1827 | uint64_t start; | |
1828 | ||
1829 | q = fdisk_table_get_partition(t, i); | |
1830 | if (!q) | |
1831 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1832 | ||
1833 | if (fdisk_partition_is_used(q) <= 0) | |
1834 | continue; | |
1835 | ||
1836 | if (!fdisk_partition_has_start(q)) | |
1837 | continue; | |
1838 | ||
1839 | start = fdisk_partition_get_start(q); | |
994b3031 LP |
1840 | assert(start < UINT64_MAX / secsz); |
1841 | start *= secsz; | |
e594a3b1 LP |
1842 | |
1843 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1844 | next = start; | |
1845 | } | |
1846 | ||
1847 | if (next == UINT64_MAX) { | |
1848 | /* No later partition? In that case check the end of the usable area */ | |
1849 | next = fdisk_get_last_lba(c); | |
1850 | assert(next < UINT64_MAX); | |
1851 | next++; /* The last LBA is one sector before the end */ | |
1852 | ||
994b3031 LP |
1853 | assert(next < UINT64_MAX / secsz); |
1854 | next *= secsz; | |
e594a3b1 LP |
1855 | |
1856 | if (offset > next) | |
1857 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1858 | } | |
1859 | ||
1860 | assert(next >= offset); | |
994b3031 LP |
1861 | offset = round_up_size(offset, grainsz); |
1862 | next = round_down_size(next, grainsz); | |
e594a3b1 | 1863 | |
a6f44d61 | 1864 | *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */ |
e594a3b1 LP |
1865 | return 0; |
1866 | } | |
1867 | ||
1868 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { | |
1869 | _cleanup_free_ char *ids = NULL; | |
1870 | int r; | |
1871 | ||
1872 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
1873 | return -EINVAL; | |
1874 | ||
b7416360 | 1875 | ids = new(char, SD_ID128_UUID_STRING_MAX); |
e594a3b1 LP |
1876 | if (!ids) |
1877 | return -ENOMEM; | |
1878 | ||
b7416360 | 1879 | r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids)); |
e594a3b1 LP |
1880 | if (r < 0) |
1881 | return r; | |
1882 | ||
1883 | TAKE_PTR(ids); | |
1884 | return 0; | |
1885 | } | |
1886 | ||
1887 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
1888 | int r; | |
1889 | ||
1890 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
1891 | if (r < 0) | |
1892 | return r; | |
1893 | ||
1894 | r = fdisk_set_disklabel_id(c); | |
1895 | if (r < 0) | |
1896 | return r; | |
1897 | ||
1898 | return fdisk_set_ask(c, NULL, NULL); | |
1899 | } | |
1900 | ||
53171c04 | 1901 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 | 1902 | union { |
ade99252 | 1903 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
1904 | sd_id128_t id; |
1905 | } result; | |
1906 | ||
53171c04 | 1907 | assert(token); |
e594a3b1 LP |
1908 | assert(ret); |
1909 | ||
53171c04 LP |
1910 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
1911 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
1912 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
1913 | * the machine ID we don't want to leak. */ | |
e594a3b1 | 1914 | |
ade99252 | 1915 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md); |
e594a3b1 LP |
1916 | |
1917 | /* Take the first half, mark it as v4 UUID */ | |
1918 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
1919 | *ret = id128_make_v4_uuid(result.id); | |
1920 | return 0; | |
1921 | } | |
1922 | ||
a26f4a49 LP |
1923 | static int context_load_partition_table( |
1924 | Context *context, | |
1925 | const char *node, | |
1926 | int *backing_fd) { | |
1927 | ||
e594a3b1 LP |
1928 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
1929 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
1930 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
1931 | _cleanup_free_ char *disk_uuid_string = NULL; | |
1932 | bool from_scratch = false; | |
1933 | sd_id128_t disk_uuid; | |
1934 | size_t n_partitions; | |
994b3031 LP |
1935 | unsigned long secsz; |
1936 | uint64_t grainsz; | |
e594a3b1 LP |
1937 | int r; |
1938 | ||
1939 | assert(context); | |
1940 | assert(node); | |
a26f4a49 | 1941 | assert(backing_fd); |
170c9823 LP |
1942 | assert(!context->fdisk_context); |
1943 | assert(!context->free_areas); | |
1944 | assert(context->start == UINT64_MAX); | |
1945 | assert(context->end == UINT64_MAX); | |
1946 | assert(context->total == UINT64_MAX); | |
e594a3b1 | 1947 | |
a26f4a49 LP |
1948 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
1949 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
f8cf3d19 LP |
1950 | if (*backing_fd < 0) { |
1951 | c = fdisk_new_context(); | |
1952 | if (!c) | |
1953 | return log_oom(); | |
1954 | ||
a26f4a49 | 1955 | r = fdisk_assign_device(c, node, arg_dry_run); |
f8cf3d19 LP |
1956 | } else |
1957 | r = fdisk_new_context_fd(*backing_fd, arg_dry_run, &c); | |
1958 | ||
170c9823 LP |
1959 | if (r == -EINVAL && arg_size_auto) { |
1960 | struct stat st; | |
1961 | ||
1962 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
1963 | * it if automatic sizing is requested. */ | |
1964 | ||
1965 | if (*backing_fd < 0) | |
1966 | r = stat(node, &st); | |
1967 | else | |
1968 | r = fstat(*backing_fd, &st); | |
1969 | if (r < 0) | |
1970 | return log_error_errno(errno, "Failed to stat block device '%s': %m", node); | |
1971 | ||
994b3031 LP |
1972 | if (S_ISREG(st.st_mode) && st.st_size == 0) { |
1973 | /* User the fallback values if we have no better idea */ | |
1974 | context->sector_size = 512; | |
1975 | context->grain_size = 4096; | |
170c9823 | 1976 | return /* from_scratch = */ true; |
994b3031 | 1977 | } |
170c9823 LP |
1978 | |
1979 | r = -EINVAL; | |
1980 | } | |
e594a3b1 | 1981 | if (r < 0) |
a26f4a49 LP |
1982 | return log_error_errno(r, "Failed to open device '%s': %m", node); |
1983 | ||
1984 | if (*backing_fd < 0) { | |
1985 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ | |
38f81e93 | 1986 | *backing_fd = fd_reopen(fdisk_get_devfd(c), O_RDONLY|O_CLOEXEC); |
a26f4a49 | 1987 | if (*backing_fd < 0) |
38f81e93 | 1988 | return log_error_errno(*backing_fd, "Failed to duplicate fdisk fd: %m"); |
e594a3b1 | 1989 | |
25baae50 DDM |
1990 | /* Tell udev not to interfere while we are processing the device */ |
1991 | if (flock(*backing_fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
1992 | return log_error_errno(errno, "Failed to lock block device: %m"); | |
1993 | } | |
e594a3b1 | 1994 | |
994b3031 LP |
1995 | /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the |
1996 | * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use | |
1997 | * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean | |
1998 | * the same thing universally. Also note that regardless what kind of sector size is in use we'll | |
1999 | * place partitions at multiples of 4K. */ | |
2000 | secsz = fdisk_get_sector_size(c); | |
2001 | ||
2002 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
983ce0b5 LP |
2003 | if (secsz < 512 || !ISPOWEROF2(secsz)) |
2004 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
994b3031 LP |
2005 | |
2006 | /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or | |
2007 | * larger */ | |
2008 | grainsz = secsz < 4096 ? 4096 : secsz; | |
2009 | ||
2010 | log_debug("Sector size of device is %lu bytes. Using grain size of %" PRIu64 ".", secsz, grainsz); | |
2011 | ||
e594a3b1 LP |
2012 | switch (arg_empty) { |
2013 | ||
2014 | case EMPTY_REFUSE: | |
2015 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
2016 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
2017 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", node); | |
2018 | ||
2019 | break; | |
2020 | ||
2021 | case EMPTY_REQUIRE: | |
2022 | /* Require an empty disk, refuse any existing partition table */ | |
2023 | r = fdisk_has_label(c); | |
2024 | if (r < 0) | |
2025 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
2026 | if (r > 0) | |
2027 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", node); | |
2028 | ||
2029 | from_scratch = true; | |
2030 | break; | |
2031 | ||
2032 | case EMPTY_ALLOW: | |
2033 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
2034 | r = fdisk_has_label(c); | |
2035 | if (r < 0) | |
2036 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", node); | |
2037 | if (r > 0) { | |
2038 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
2039 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", node); | |
2040 | } else | |
2041 | from_scratch = true; | |
2042 | ||
2043 | break; | |
2044 | ||
2045 | case EMPTY_FORCE: | |
a26f4a49 | 2046 | case EMPTY_CREATE: |
e594a3b1 LP |
2047 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
2048 | from_scratch = true; | |
2049 | break; | |
2050 | } | |
2051 | ||
2052 | if (from_scratch) { | |
e594a3b1 LP |
2053 | r = fdisk_create_disklabel(c, "gpt"); |
2054 | if (r < 0) | |
2055 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
2056 | ||
53171c04 | 2057 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2058 | if (r < 0) |
2059 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2060 | ||
2061 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
2062 | if (r < 0) | |
2063 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2064 | ||
2065 | goto add_initial_free_area; | |
2066 | } | |
2067 | ||
2068 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
2069 | if (r < 0) | |
2070 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
2071 | ||
2072 | r = sd_id128_from_string(disk_uuid_string, &disk_uuid); | |
2073 | if (r < 0) | |
2074 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
2075 | ||
2076 | if (sd_id128_is_null(disk_uuid)) { | |
53171c04 | 2077 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2078 | if (r < 0) |
2079 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2080 | ||
2081 | r = fdisk_set_disklabel_id(c); | |
2082 | if (r < 0) | |
2083 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2084 | } | |
2085 | ||
2086 | r = fdisk_get_partitions(c, &t); | |
2087 | if (r < 0) | |
2088 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
2089 | ||
2090 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 2091 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 | 2092 | _cleanup_free_ char *label_copy = NULL; |
03677889 | 2093 | Partition *last = NULL; |
e594a3b1 LP |
2094 | struct fdisk_partition *p; |
2095 | struct fdisk_parttype *pt; | |
2096 | const char *pts, *ids, *label; | |
2097 | uint64_t sz, start; | |
2098 | bool found = false; | |
2099 | sd_id128_t ptid, id; | |
2100 | size_t partno; | |
2101 | ||
2102 | p = fdisk_table_get_partition(t, i); | |
2103 | if (!p) | |
2104 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
2105 | ||
2106 | if (fdisk_partition_is_used(p) <= 0) | |
2107 | continue; | |
2108 | ||
2109 | if (fdisk_partition_has_start(p) <= 0 || | |
2110 | fdisk_partition_has_size(p) <= 0 || | |
2111 | fdisk_partition_has_partno(p) <= 0) | |
2112 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
2113 | ||
2114 | pt = fdisk_partition_get_type(p); | |
2115 | if (!pt) | |
2116 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition: %m"); | |
2117 | ||
2118 | pts = fdisk_parttype_get_string(pt); | |
2119 | if (!pts) | |
2120 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire type of partition as string: %m"); | |
2121 | ||
2122 | r = sd_id128_from_string(pts, &ptid); | |
2123 | if (r < 0) | |
2124 | return log_error_errno(r, "Failed to parse partition type UUID %s: %m", pts); | |
2125 | ||
2126 | ids = fdisk_partition_get_uuid(p); | |
2127 | if (!ids) | |
2128 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a UUID."); | |
2129 | ||
2130 | r = sd_id128_from_string(ids, &id); | |
2131 | if (r < 0) | |
2132 | return log_error_errno(r, "Failed to parse partition UUID %s: %m", ids); | |
2133 | ||
2134 | label = fdisk_partition_get_name(p); | |
2135 | if (!isempty(label)) { | |
2136 | label_copy = strdup(label); | |
2137 | if (!label_copy) | |
2138 | return log_oom(); | |
2139 | } | |
2140 | ||
2141 | sz = fdisk_partition_get_size(p); | |
ac33e147 | 2142 | assert(sz <= UINT64_MAX/secsz); |
994b3031 | 2143 | sz *= secsz; |
e594a3b1 LP |
2144 | |
2145 | start = fdisk_partition_get_start(p); | |
ac33e147 | 2146 | assert(start <= UINT64_MAX/secsz); |
994b3031 | 2147 | start *= secsz; |
e594a3b1 LP |
2148 | |
2149 | partno = fdisk_partition_get_partno(p); | |
2150 | ||
2151 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
2152 | left_boundary = start; | |
2153 | ||
2154 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
2155 | * an existing one assigned yet. */ | |
2156 | LIST_FOREACH(partitions, pp, context->partitions) { | |
2157 | last = pp; | |
2158 | ||
22e932f4 | 2159 | if (!sd_id128_equal(pp->type.uuid, ptid)) |
e594a3b1 LP |
2160 | continue; |
2161 | ||
2162 | if (!pp->current_partition) { | |
2163 | pp->current_uuid = id; | |
2164 | pp->current_size = sz; | |
2165 | pp->offset = start; | |
2166 | pp->partno = partno; | |
2167 | pp->current_label = TAKE_PTR(label_copy); | |
2168 | ||
2169 | pp->current_partition = p; | |
2170 | fdisk_ref_partition(p); | |
2171 | ||
994b3031 | 2172 | r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding); |
e594a3b1 LP |
2173 | if (r < 0) |
2174 | return r; | |
2175 | ||
2176 | if (pp->current_padding > 0) { | |
2177 | r = context_add_free_area(context, pp->current_padding, pp); | |
2178 | if (r < 0) | |
2179 | return r; | |
2180 | } | |
2181 | ||
2182 | found = true; | |
2183 | break; | |
2184 | } | |
2185 | } | |
2186 | ||
2187 | /* If we have no matching definition, create a new one. */ | |
2188 | if (!found) { | |
2189 | _cleanup_(partition_freep) Partition *np = NULL; | |
2190 | ||
2191 | np = partition_new(); | |
2192 | if (!np) | |
2193 | return log_oom(); | |
2194 | ||
2195 | np->current_uuid = id; | |
22e932f4 | 2196 | np->type = gpt_partition_type_from_uuid(ptid); |
e594a3b1 LP |
2197 | np->current_size = sz; |
2198 | np->offset = start; | |
2199 | np->partno = partno; | |
2200 | np->current_label = TAKE_PTR(label_copy); | |
2201 | ||
2202 | np->current_partition = p; | |
2203 | fdisk_ref_partition(p); | |
2204 | ||
994b3031 | 2205 | r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding); |
e594a3b1 LP |
2206 | if (r < 0) |
2207 | return r; | |
2208 | ||
2209 | if (np->current_padding > 0) { | |
2210 | r = context_add_free_area(context, np->current_padding, np); | |
2211 | if (r < 0) | |
2212 | return r; | |
2213 | } | |
2214 | ||
2215 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
2216 | context->n_partitions++; | |
2217 | } | |
2218 | } | |
2219 | ||
2220 | add_initial_free_area: | |
2221 | nsectors = fdisk_get_nsectors(c); | |
994b3031 LP |
2222 | assert(nsectors <= UINT64_MAX/secsz); |
2223 | nsectors *= secsz; | |
e594a3b1 LP |
2224 | |
2225 | first_lba = fdisk_get_first_lba(c); | |
994b3031 LP |
2226 | assert(first_lba <= UINT64_MAX/secsz); |
2227 | first_lba *= secsz; | |
e594a3b1 LP |
2228 | |
2229 | last_lba = fdisk_get_last_lba(c); | |
2230 | assert(last_lba < UINT64_MAX); | |
2231 | last_lba++; | |
994b3031 LP |
2232 | assert(last_lba <= UINT64_MAX/secsz); |
2233 | last_lba *= secsz; | |
e594a3b1 LP |
2234 | |
2235 | assert(last_lba >= first_lba); | |
2236 | ||
2237 | if (left_boundary == UINT64_MAX) { | |
2238 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
2239 | ||
994b3031 LP |
2240 | first_lba = round_up_size(first_lba, grainsz); |
2241 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2242 | |
2243 | if (last_lba > first_lba) { | |
2244 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
2245 | if (r < 0) | |
2246 | return r; | |
2247 | } | |
2248 | } else { | |
2249 | /* Add space left of first partition */ | |
2250 | assert(left_boundary >= first_lba); | |
2251 | ||
994b3031 LP |
2252 | first_lba = round_up_size(first_lba, grainsz); |
2253 | left_boundary = round_down_size(left_boundary, grainsz); | |
2254 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2255 | |
2256 | if (left_boundary > first_lba) { | |
2257 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
2258 | if (r < 0) | |
2259 | return r; | |
2260 | } | |
2261 | } | |
2262 | ||
2263 | context->start = first_lba; | |
2264 | context->end = last_lba; | |
2265 | context->total = nsectors; | |
994b3031 LP |
2266 | context->sector_size = secsz; |
2267 | context->grain_size = grainsz; | |
e594a3b1 LP |
2268 | context->fdisk_context = TAKE_PTR(c); |
2269 | ||
2270 | return from_scratch; | |
2271 | } | |
2272 | ||
2273 | static void context_unload_partition_table(Context *context) { | |
e594a3b1 LP |
2274 | assert(context); |
2275 | ||
80a226b2 | 2276 | LIST_FOREACH(partitions, p, context->partitions) { |
e594a3b1 LP |
2277 | |
2278 | /* Entirely remove partitions that have no configuration */ | |
2279 | if (PARTITION_IS_FOREIGN(p)) { | |
2280 | partition_unlink_and_free(context, p); | |
2281 | continue; | |
2282 | } | |
2283 | ||
2284 | /* Otherwise drop all data we read off the block device and everything we might have | |
2285 | * calculated based on it */ | |
2286 | ||
2287 | p->dropped = false; | |
2288 | p->current_size = UINT64_MAX; | |
2289 | p->new_size = UINT64_MAX; | |
2290 | p->current_padding = UINT64_MAX; | |
2291 | p->new_padding = UINT64_MAX; | |
2292 | p->partno = UINT64_MAX; | |
2293 | p->offset = UINT64_MAX; | |
2294 | ||
2295 | if (p->current_partition) { | |
2296 | fdisk_unref_partition(p->current_partition); | |
2297 | p->current_partition = NULL; | |
2298 | } | |
2299 | ||
2300 | if (p->new_partition) { | |
2301 | fdisk_unref_partition(p->new_partition); | |
2302 | p->new_partition = NULL; | |
2303 | } | |
2304 | ||
2305 | p->padding_area = NULL; | |
2306 | p->allocated_to_area = NULL; | |
2307 | ||
15d43e30 LP |
2308 | p->current_uuid = SD_ID128_NULL; |
2309 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
2310 | } |
2311 | ||
2312 | context->start = UINT64_MAX; | |
2313 | context->end = UINT64_MAX; | |
2314 | context->total = UINT64_MAX; | |
2315 | ||
2316 | if (context->fdisk_context) { | |
2317 | fdisk_unref_context(context->fdisk_context); | |
2318 | context->fdisk_context = NULL; | |
2319 | } | |
2320 | ||
2321 | context_free_free_areas(context); | |
2322 | } | |
2323 | ||
2324 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
2b59bf51 | 2325 | char *t; |
e594a3b1 LP |
2326 | |
2327 | if (from != UINT64_MAX) { | |
2328 | if (from == to || to == UINT64_MAX) | |
2b59bf51 | 2329 | t = strdup(FORMAT_BYTES(from)); |
e594a3b1 | 2330 | else |
fc03e80c | 2331 | t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 | 2332 | } else if (to != UINT64_MAX) |
fc03e80c | 2333 | t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 LP |
2334 | else { |
2335 | *ret = NULL; | |
2336 | return 0; | |
2337 | } | |
2338 | ||
2b59bf51 | 2339 | if (!t) |
e594a3b1 LP |
2340 | return log_oom(); |
2341 | ||
2b59bf51 | 2342 | *ret = t; |
e594a3b1 LP |
2343 | return 1; |
2344 | } | |
2345 | ||
2346 | static const char *partition_label(const Partition *p) { | |
2347 | assert(p); | |
2348 | ||
2349 | if (p->new_label) | |
2350 | return p->new_label; | |
2351 | ||
2352 | if (p->current_label) | |
2353 | return p->current_label; | |
2354 | ||
22e932f4 | 2355 | return gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
2356 | } |
2357 | ||
2358 | static int context_dump_partitions(Context *context, const char *node) { | |
2359 | _cleanup_(table_unrefp) Table *t = NULL; | |
2360 | uint64_t sum_padding = 0, sum_size = 0; | |
e594a3b1 | 2361 | int r; |
b5b7879a DDM |
2362 | const size_t roothash_col = 13, dropin_files_col = 14; |
2363 | bool has_roothash = false, has_dropin_files = false; | |
e594a3b1 | 2364 | |
6a01ea4a | 2365 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
2366 | log_info("Empty partition table."); |
2367 | return 0; | |
2368 | } | |
2369 | ||
b5b7879a | 2370 | 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 |
2371 | if (!t) |
2372 | return log_oom(); | |
2373 | ||
a015fbe7 | 2374 | if (!DEBUG_LOGGING) { |
6a01ea4a | 2375 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 2376 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
b5b7879a | 2377 | (size_t) 8, (size_t) 11, roothash_col, dropin_files_col); |
a015fbe7 TH |
2378 | else |
2379 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
b5b7879a DDM |
2380 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 9, (size_t) 10, |
2381 | (size_t) 12, roothash_col, dropin_files_col); | |
a015fbe7 | 2382 | } |
e594a3b1 | 2383 | |
e594a3b1 | 2384 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
2385 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
2386 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
2387 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
2388 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
2389 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
2390 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
2391 | |
2392 | LIST_FOREACH(partitions, p, context->partitions) { | |
b5b7879a | 2393 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL; |
b7416360 | 2394 | char uuid_buffer[SD_ID128_UUID_STRING_MAX]; |
a015fbe7 | 2395 | const char *label, *activity = NULL; |
e594a3b1 LP |
2396 | |
2397 | if (p->dropped) | |
2398 | continue; | |
2399 | ||
a015fbe7 TH |
2400 | if (p->current_size == UINT64_MAX) |
2401 | activity = "create"; | |
2402 | else if (p->current_size != p->new_size) | |
2403 | activity = "resize"; | |
2404 | ||
e594a3b1 LP |
2405 | label = partition_label(p); |
2406 | partname = p->partno != UINT64_MAX ? fdisk_partname(node, p->partno+1) : NULL; | |
2407 | ||
2408 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2409 | if (r < 0) | |
2410 | return r; | |
2411 | ||
2412 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2413 | if (r < 0) | |
2414 | return r; | |
2415 | ||
2416 | if (p->new_size != UINT64_MAX) | |
2417 | sum_size += p->new_size; | |
2418 | if (p->new_padding != UINT64_MAX) | |
2419 | sum_padding += p->new_padding; | |
2420 | ||
b5b7879a DDM |
2421 | if (p->verity == VERITY_HASH) { |
2422 | rh = p->roothash ? hexmem(p->roothash, p->roothash_size) : strdup("TBD"); | |
2423 | if (!rh) | |
2424 | return log_oom(); | |
2425 | } | |
2426 | ||
e594a3b1 LP |
2427 | r = table_add_many( |
2428 | t, | |
22e932f4 | 2429 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type.uuid, uuid_buffer), |
be9ce018 | 2430 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
11749b61 | 2431 | TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid, |
e594a3b1 | 2432 | TABLE_STRING, p->definition_path ? basename(p->definition_path) : "-", TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), |
a015fbe7 | 2433 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2434 | TABLE_UINT64, p->offset, |
a015fbe7 | 2435 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2436 | TABLE_UINT64, p->new_size, |
2437 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2438 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2439 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2440 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
39fc0174 | 2441 | TABLE_STRING, activity ?: "unchanged", |
b5b7879a | 2442 | TABLE_STRING, rh, |
39fc0174 | 2443 | TABLE_STRV, p->drop_in_files); |
e594a3b1 | 2444 | if (r < 0) |
f987a261 | 2445 | return table_log_add_error(r); |
39fc0174 | 2446 | |
b5b7879a | 2447 | has_roothash = has_roothash || !isempty(rh); |
3ab44dbd | 2448 | has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files); |
e594a3b1 LP |
2449 | } |
2450 | ||
6a01ea4a | 2451 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2452 | const char *a, *b; |
2453 | ||
2b59bf51 ZJS |
2454 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size)); |
2455 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding)); | |
e594a3b1 LP |
2456 | |
2457 | r = table_add_many( | |
2458 | t, | |
2459 | TABLE_EMPTY, | |
2460 | TABLE_EMPTY, | |
2461 | TABLE_EMPTY, | |
2462 | TABLE_EMPTY, | |
2463 | TABLE_EMPTY, | |
2464 | TABLE_EMPTY, | |
2465 | TABLE_EMPTY, | |
a015fbe7 | 2466 | TABLE_EMPTY, |
e594a3b1 LP |
2467 | TABLE_STRING, a, |
2468 | TABLE_EMPTY, | |
a015fbe7 TH |
2469 | TABLE_EMPTY, |
2470 | TABLE_STRING, b, | |
39fc0174 | 2471 | TABLE_EMPTY, |
b5b7879a | 2472 | TABLE_EMPTY, |
a015fbe7 | 2473 | TABLE_EMPTY); |
e594a3b1 | 2474 | if (r < 0) |
f987a261 | 2475 | return table_log_add_error(r); |
e594a3b1 LP |
2476 | } |
2477 | ||
b5b7879a DDM |
2478 | if (!has_roothash) { |
2479 | r = table_hide_column_from_display(t, roothash_col); | |
2480 | if (r < 0) | |
2481 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2482 | } | |
2483 | ||
3ab44dbd | 2484 | if (!has_dropin_files) { |
39fc0174 RP |
2485 | r = table_hide_column_from_display(t, dropin_files_col); |
2486 | if (r < 0) | |
2487 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2488 | } | |
2489 | ||
896e678b | 2490 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2491 | } |
2492 | ||
2493 | static void context_bar_char_process_partition( | |
2494 | Context *context, | |
2495 | Partition *bar[], | |
2496 | size_t n, | |
2497 | Partition *p, | |
2498 | size_t *ret_start) { | |
2499 | ||
2500 | uint64_t from, to, total; | |
2501 | size_t x, y; | |
2502 | ||
2503 | assert(context); | |
2504 | assert(bar); | |
2505 | assert(n > 0); | |
2506 | assert(p); | |
2507 | ||
2508 | if (p->dropped) | |
2509 | return; | |
2510 | ||
2511 | assert(p->offset != UINT64_MAX); | |
2512 | assert(p->new_size != UINT64_MAX); | |
2513 | ||
2514 | from = p->offset; | |
2515 | to = from + p->new_size; | |
2516 | ||
d8daed09 TY |
2517 | assert(context->total > 0); |
2518 | total = context->total; | |
e594a3b1 | 2519 | |
d8daed09 TY |
2520 | assert(from <= total); |
2521 | x = from * n / total; | |
e594a3b1 | 2522 | |
d8daed09 TY |
2523 | assert(to <= total); |
2524 | y = to * n / total; | |
e594a3b1 LP |
2525 | |
2526 | assert(x <= y); | |
2527 | assert(y <= n); | |
2528 | ||
2529 | for (size_t i = x; i < y; i++) | |
2530 | bar[i] = p; | |
2531 | ||
2532 | *ret_start = x; | |
2533 | } | |
2534 | ||
2535 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2536 | _cleanup_free_ char *buf = NULL; | |
e594a3b1 LP |
2537 | const char *label; |
2538 | sd_id128_t id; | |
2539 | ||
2540 | /* Tries really hard to find a suitable description for this partition */ | |
2541 | ||
2542 | if (p->definition_path) { | |
2543 | buf = strdup(basename(p->definition_path)); | |
2544 | goto done; | |
2545 | } | |
2546 | ||
2547 | label = partition_label(p); | |
2548 | if (!isempty(label)) { | |
2549 | buf = strdup(label); | |
2550 | goto done; | |
2551 | } | |
2552 | ||
2553 | if (p->partno != UINT64_MAX) { | |
2554 | buf = fdisk_partname(node, p->partno+1); | |
2555 | goto done; | |
2556 | } | |
2557 | ||
11749b61 | 2558 | if (p->new_uuid_is_set) |
e594a3b1 LP |
2559 | id = p->new_uuid; |
2560 | else if (!sd_id128_is_null(p->current_uuid)) | |
2561 | id = p->current_uuid; | |
2562 | else | |
22e932f4 | 2563 | id = p->type.uuid; |
e594a3b1 | 2564 | |
b7416360 | 2565 | buf = strdup(SD_ID128_TO_UUID_STRING(id)); |
e594a3b1 LP |
2566 | |
2567 | done: | |
2568 | if (!buf) | |
2569 | return -ENOMEM; | |
2570 | ||
2571 | *ret = TAKE_PTR(buf); | |
2572 | return 0; | |
2573 | } | |
2574 | ||
2575 | static int context_dump_partition_bar(Context *context, const char *node) { | |
2576 | _cleanup_free_ Partition **bar = NULL; | |
2577 | _cleanup_free_ size_t *start_array = NULL; | |
03677889 | 2578 | Partition *last = NULL; |
e594a3b1 LP |
2579 | bool z = false; |
2580 | size_t c, j = 0; | |
2581 | ||
f391597c | 2582 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2583 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2584 | ||
2585 | bar = new0(Partition*, c); | |
2586 | if (!bar) | |
2587 | return log_oom(); | |
2588 | ||
2589 | start_array = new(size_t, context->n_partitions); | |
2590 | if (!start_array) | |
2591 | return log_oom(); | |
2592 | ||
2593 | LIST_FOREACH(partitions, p, context->partitions) | |
2594 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2595 | ||
2596 | putc(' ', stdout); | |
2597 | ||
2598 | for (size_t i = 0; i < c; i++) { | |
2599 | if (bar[i]) { | |
2600 | if (last != bar[i]) | |
2601 | z = !z; | |
2602 | ||
2603 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2604 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2605 | } else { | |
2606 | fputs(ansi_normal(), stdout); | |
2607 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2608 | } | |
2609 | ||
2610 | last = bar[i]; | |
2611 | } | |
2612 | ||
2613 | fputs(ansi_normal(), stdout); | |
2614 | putc('\n', stdout); | |
2615 | ||
2616 | for (size_t i = 0; i < context->n_partitions; i++) { | |
2617 | _cleanup_free_ char **line = NULL; | |
2618 | ||
2619 | line = new0(char*, c); | |
2620 | if (!line) | |
2621 | return log_oom(); | |
2622 | ||
2623 | j = 0; | |
2624 | LIST_FOREACH(partitions, p, context->partitions) { | |
2625 | _cleanup_free_ char *d = NULL; | |
2626 | j++; | |
2627 | ||
2628 | if (i < context->n_partitions - j) { | |
2629 | ||
2630 | if (line[start_array[j-1]]) { | |
2631 | const char *e; | |
2632 | ||
2633 | /* Upgrade final corner to the right with a branch to the right */ | |
2634 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
2635 | if (e) { | |
2636 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
2637 | if (!d) | |
2638 | return log_oom(); | |
2639 | } | |
2640 | } | |
2641 | ||
2642 | if (!d) { | |
2643 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
2644 | if (!d) | |
2645 | return log_oom(); | |
2646 | } | |
2647 | ||
2648 | } else if (i == context->n_partitions - j) { | |
2649 | _cleanup_free_ char *hint = NULL; | |
2650 | ||
2651 | (void) partition_hint(p, node, &hint); | |
2652 | ||
2653 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
2654 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
2655 | else | |
2656 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
2657 | ||
2658 | if (!d) | |
2659 | return log_oom(); | |
2660 | } | |
2661 | ||
2662 | if (d) | |
2663 | free_and_replace(line[start_array[j-1]], d); | |
2664 | } | |
2665 | ||
2666 | putc(' ', stdout); | |
2667 | ||
2668 | j = 0; | |
2669 | while (j < c) { | |
2670 | if (line[j]) { | |
2671 | fputs(line[j], stdout); | |
2672 | j += utf8_console_width(line[j]); | |
2673 | } else { | |
2674 | putc(' ', stdout); | |
2675 | j++; | |
2676 | } | |
2677 | } | |
2678 | ||
2679 | putc('\n', stdout); | |
2680 | ||
2681 | for (j = 0; j < c; j++) | |
2682 | free(line[j]); | |
2683 | } | |
2684 | ||
2685 | return 0; | |
2686 | } | |
2687 | ||
b5b7879a DDM |
2688 | static bool context_has_roothash(Context *context) { |
2689 | LIST_FOREACH(partitions, p, context->partitions) | |
2690 | if (p->roothash) | |
2691 | return true; | |
2692 | ||
2693 | return false; | |
2694 | } | |
2695 | ||
2696 | static int context_dump(Context *context, const char *node, bool late) { | |
a26d463d DDM |
2697 | int r; |
2698 | ||
2699 | assert(context); | |
2700 | assert(node); | |
2701 | ||
2702 | if (arg_pretty == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2703 | return 0; | |
2704 | ||
b5b7879a DDM |
2705 | /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes |
2706 | * in the output. */ | |
2707 | if (!late && !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2708 | return 0; | |
2709 | ||
2710 | /* If we're not outputting JSON, only dump again after doing all operations if there are any | |
2711 | * roothashes that we need to communicate to the user. */ | |
2712 | if (late && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !context_has_roothash(context)) | |
2713 | return 0; | |
2714 | ||
a26d463d DDM |
2715 | r = context_dump_partitions(context, node); |
2716 | if (r < 0) | |
2717 | return r; | |
2718 | ||
b5b7879a DDM |
2719 | /* Make sure we only write the partition bar once, even if we're writing the partition table twice to |
2720 | * communicate roothashes. */ | |
2721 | if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !late) { | |
a26d463d DDM |
2722 | putc('\n', stdout); |
2723 | ||
2724 | r = context_dump_partition_bar(context, node); | |
2725 | if (r < 0) | |
2726 | return r; | |
2727 | ||
2728 | putc('\n', stdout); | |
2729 | } | |
2730 | ||
2731 | fflush(stdout); | |
2732 | ||
2733 | return 0; | |
2734 | } | |
2735 | ||
2736 | ||
e594a3b1 | 2737 | static bool context_changed(const Context *context) { |
03677889 | 2738 | assert(context); |
e594a3b1 LP |
2739 | |
2740 | LIST_FOREACH(partitions, p, context->partitions) { | |
2741 | if (p->dropped) | |
2742 | continue; | |
2743 | ||
2744 | if (p->allocated_to_area) | |
2745 | return true; | |
2746 | ||
2747 | if (p->new_size != p->current_size) | |
2748 | return true; | |
2749 | } | |
2750 | ||
2751 | return false; | |
2752 | } | |
2753 | ||
81873a6b | 2754 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
2755 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
2756 | int r; | |
2757 | ||
2758 | assert(context); | |
81873a6b LP |
2759 | assert(offset != UINT64_MAX); |
2760 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
2761 | |
2762 | probe = blkid_new_probe(); | |
2763 | if (!probe) | |
2764 | return log_oom(); | |
2765 | ||
e594a3b1 | 2766 | errno = 0; |
81873a6b | 2767 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 2768 | if (r < 0) |
81873a6b | 2769 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
2770 | |
2771 | errno = 0; | |
2772 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
2773 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
2774 | blkid_probe_enable_partitions(probe, true) < 0 || | |
2775 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 2776 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
2777 | |
2778 | for (;;) { | |
2779 | errno = 0; | |
2780 | r = blkid_do_probe(probe); | |
2781 | if (r < 0) | |
2782 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
2783 | if (r > 0) | |
2784 | break; | |
2785 | ||
2786 | errno = 0; | |
2787 | if (blkid_do_wipe(probe, false) < 0) | |
2788 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
2789 | } | |
2790 | ||
e594a3b1 LP |
2791 | return 0; |
2792 | } | |
2793 | ||
81873a6b LP |
2794 | static int context_wipe_partition(Context *context, Partition *p) { |
2795 | int r; | |
2796 | ||
2797 | assert(context); | |
2798 | assert(p); | |
2799 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
2800 | ||
2801 | assert(p->offset != UINT64_MAX); | |
2802 | assert(p->new_size != UINT64_MAX); | |
2803 | ||
2804 | r = context_wipe_range(context, p->offset, p->new_size); | |
2805 | if (r < 0) | |
2806 | return r; | |
2807 | ||
2808 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
2809 | return 0; | |
2810 | } | |
2811 | ||
2812 | static int context_discard_range( | |
2813 | Context *context, | |
2814 | uint64_t offset, | |
2815 | uint64_t size) { | |
2816 | ||
e594a3b1 LP |
2817 | struct stat st; |
2818 | int fd; | |
2819 | ||
2820 | assert(context); | |
2821 | assert(offset != UINT64_MAX); | |
2822 | assert(size != UINT64_MAX); | |
2823 | ||
2824 | if (size <= 0) | |
2825 | return 0; | |
2826 | ||
a26f4a49 | 2827 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
2828 | |
2829 | if (fstat(fd, &st) < 0) | |
2830 | return -errno; | |
2831 | ||
2832 | if (S_ISREG(st.st_mode)) { | |
2833 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
2834 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2835 | return -EOPNOTSUPP; | |
2836 | ||
2837 | return -errno; | |
2838 | } | |
2839 | ||
2840 | return 1; | |
2841 | } | |
2842 | ||
2843 | if (S_ISBLK(st.st_mode)) { | |
2844 | uint64_t range[2], end; | |
2845 | ||
994b3031 | 2846 | range[0] = round_up_size(offset, context->sector_size); |
e594a3b1 | 2847 | |
55d38014 LP |
2848 | if (offset > UINT64_MAX - size) |
2849 | return -ERANGE; | |
2850 | ||
e594a3b1 LP |
2851 | end = offset + size; |
2852 | if (end <= range[0]) | |
2853 | return 0; | |
2854 | ||
994b3031 | 2855 | range[1] = round_down_size(end - range[0], context->sector_size); |
e594a3b1 LP |
2856 | if (range[1] <= 0) |
2857 | return 0; | |
2858 | ||
2859 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
2860 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2861 | return -EOPNOTSUPP; | |
2862 | ||
2863 | return -errno; | |
2864 | } | |
2865 | ||
2866 | return 1; | |
2867 | } | |
2868 | ||
2869 | return -EOPNOTSUPP; | |
2870 | } | |
2871 | ||
2872 | static int context_discard_partition(Context *context, Partition *p) { | |
2873 | int r; | |
2874 | ||
2875 | assert(context); | |
2876 | assert(p); | |
2877 | ||
2878 | assert(p->offset != UINT64_MAX); | |
2879 | assert(p->new_size != UINT64_MAX); | |
2880 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
2881 | ||
2882 | if (!arg_discard) | |
2883 | return 0; | |
2884 | ||
2885 | r = context_discard_range(context, p->offset, p->new_size); | |
2886 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 2887 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2888 | return 0; |
2889 | } | |
22163eb5 LP |
2890 | if (r == -EBUSY) { |
2891 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
2892 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
2893 | return 0; | |
2894 | } | |
e594a3b1 LP |
2895 | if (r == 0) { |
2896 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
2897 | return 0; | |
2898 | } | |
2899 | if (r < 0) | |
5b5109e2 | 2900 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2901 | |
5b5109e2 | 2902 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2903 | return 1; |
2904 | } | |
2905 | ||
2906 | static int context_discard_gap_after(Context *context, Partition *p) { | |
2907 | uint64_t gap, next = UINT64_MAX; | |
e594a3b1 LP |
2908 | int r; |
2909 | ||
2910 | assert(context); | |
2911 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
2912 | ||
5113436b AF |
2913 | if (!arg_discard) |
2914 | return 0; | |
2915 | ||
e594a3b1 LP |
2916 | if (p) |
2917 | gap = p->offset + p->new_size; | |
2918 | else | |
2919 | gap = context->start; | |
2920 | ||
2921 | LIST_FOREACH(partitions, q, context->partitions) { | |
2922 | if (q->dropped) | |
2923 | continue; | |
2924 | ||
2925 | assert(q->offset != UINT64_MAX); | |
2926 | assert(q->new_size != UINT64_MAX); | |
2927 | ||
2928 | if (q->offset < gap) | |
2929 | continue; | |
2930 | ||
2931 | if (next == UINT64_MAX || q->offset < next) | |
2932 | next = q->offset; | |
2933 | } | |
2934 | ||
2935 | if (next == UINT64_MAX) { | |
2936 | next = context->end; | |
2937 | if (gap > next) | |
2938 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
2939 | } | |
2940 | ||
2941 | assert(next >= gap); | |
2942 | r = context_discard_range(context, gap, next - gap); | |
2943 | if (r == -EOPNOTSUPP) { | |
2944 | if (p) | |
5b5109e2 | 2945 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2946 | else |
5b5109e2 | 2947 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
2948 | return 0; |
2949 | } | |
2950 | if (r == 0) /* Too short */ | |
2951 | return 0; | |
2952 | if (r < 0) { | |
2953 | if (p) | |
2954 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
2955 | else | |
2956 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
2957 | } | |
2958 | ||
2959 | if (p) | |
2960 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
2961 | else | |
2962 | log_info("Successfully discarded gap at beginning of disk."); | |
2963 | ||
2964 | return 0; | |
2965 | } | |
2966 | ||
2967 | static int context_wipe_and_discard(Context *context, bool from_scratch) { | |
e594a3b1 LP |
2968 | int r; |
2969 | ||
2970 | assert(context); | |
2971 | ||
2972 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if | |
2973 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
2974 | * device in one go early on. */ | |
2975 | ||
2976 | LIST_FOREACH(partitions, p, context->partitions) { | |
2977 | ||
2978 | if (!p->allocated_to_area) | |
2979 | continue; | |
2980 | ||
81d1098b DDM |
2981 | if (partition_skip(p)) |
2982 | continue; | |
2983 | ||
e594a3b1 LP |
2984 | r = context_wipe_partition(context, p); |
2985 | if (r < 0) | |
2986 | return r; | |
2987 | ||
2988 | if (!from_scratch) { | |
f0cb1b95 LP |
2989 | r = context_discard_partition(context, p); |
2990 | if (r < 0) | |
2991 | return r; | |
2992 | ||
e594a3b1 LP |
2993 | r = context_discard_gap_after(context, p); |
2994 | if (r < 0) | |
2995 | return r; | |
2996 | } | |
2997 | } | |
2998 | ||
2999 | if (!from_scratch) { | |
3000 | r = context_discard_gap_after(context, NULL); | |
3001 | if (r < 0) | |
3002 | return r; | |
3003 | } | |
3004 | ||
3005 | return 0; | |
3006 | } | |
3007 | ||
a64769d6 DDM |
3008 | typedef struct { |
3009 | LoopDevice *loop; | |
3010 | int fd; | |
3011 | char *path; | |
3012 | int whole_fd; | |
3013 | } PartitionTarget; | |
3014 | ||
3015 | static int partition_target_fd(PartitionTarget *t) { | |
3016 | assert(t); | |
3017 | assert(t->loop || t->fd >= 0 || t->whole_fd >= 0); | |
3018 | return t->loop ? t->loop->fd : t->fd >= 0 ? t->fd : t->whole_fd; | |
3019 | } | |
3020 | ||
3021 | static const char* partition_target_path(PartitionTarget *t) { | |
3022 | assert(t); | |
3023 | assert(t->loop || t->path); | |
3024 | return t->loop ? t->loop->node : t->path; | |
3025 | } | |
3026 | ||
3027 | static PartitionTarget *partition_target_free(PartitionTarget *t) { | |
3028 | if (!t) | |
3029 | return NULL; | |
3030 | ||
3031 | loop_device_unref(t->loop); | |
3032 | safe_close(t->fd); | |
3033 | unlink_and_free(t->path); | |
3034 | ||
3035 | return mfree(t); | |
3036 | } | |
3037 | ||
3038 | DEFINE_TRIVIAL_CLEANUP_FUNC(PartitionTarget*, partition_target_free); | |
3039 | ||
d3201eb4 DDM |
3040 | static int prepare_temporary_file(PartitionTarget *t, uint64_t size) { |
3041 | _cleanup_(unlink_and_freep) char *temp = NULL; | |
3042 | _cleanup_close_ int fd = -1; | |
3043 | const char *vt; | |
3044 | int r; | |
3045 | ||
3046 | assert(t); | |
3047 | ||
3048 | r = var_tmp_dir(&vt); | |
3049 | if (r < 0) | |
3050 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
3051 | ||
3052 | temp = path_join(vt, "repart-XXXXXX"); | |
3053 | if (!temp) | |
3054 | return log_oom(); | |
3055 | ||
3056 | fd = mkostemp_safe(temp); | |
3057 | if (fd < 0) | |
3058 | return log_error_errno(fd, "Failed to create temporary file: %m"); | |
3059 | ||
3060 | if (ftruncate(fd, size) < 0) | |
3061 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
3062 | FORMAT_BYTES(size)); | |
3063 | ||
3064 | t->fd = TAKE_FD(fd); | |
3065 | t->path = TAKE_PTR(temp); | |
3066 | ||
3067 | return 0; | |
3068 | } | |
3069 | ||
a64769d6 DDM |
3070 | static int partition_target_prepare( |
3071 | Context *context, | |
3072 | Partition *p, | |
3073 | uint64_t size, | |
3074 | bool need_path, | |
3075 | PartitionTarget **ret) { | |
3076 | ||
3077 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; | |
d3201eb4 DDM |
3078 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
3079 | int whole_fd, r; | |
a64769d6 DDM |
3080 | |
3081 | assert(context); | |
3082 | assert(p); | |
3083 | assert(ret); | |
3084 | ||
3085 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3086 | ||
6b1ea55e | 3087 | t = new(PartitionTarget, 1); |
a64769d6 DDM |
3088 | if (!t) |
3089 | return log_oom(); | |
6b1ea55e DDM |
3090 | *t = (PartitionTarget) { |
3091 | .fd = -1, | |
3092 | .whole_fd = -1, | |
3093 | }; | |
a64769d6 | 3094 | |
d3201eb4 DDM |
3095 | if (!need_path) { |
3096 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3097 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
a64769d6 | 3098 | |
d3201eb4 DDM |
3099 | t->whole_fd = whole_fd; |
3100 | *ret = TAKE_PTR(t); | |
3101 | return 0; | |
3102 | } | |
a64769d6 | 3103 | |
d3201eb4 DDM |
3104 | /* Loopback block devices are not only useful to turn regular files into block devices, but |
3105 | * also to cut out sections of block devices into new block devices. */ | |
a64769d6 | 3106 | |
d3201eb4 DDM |
3107 | r = loop_device_make(whole_fd, O_RDWR, p->offset, size, 0, 0, LOCK_EX, &d); |
3108 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
3109 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); | |
3110 | if (r >= 0) { | |
6b1ea55e | 3111 | t->loop = TAKE_PTR(d); |
d3201eb4 DDM |
3112 | *ret = TAKE_PTR(t); |
3113 | return 0; | |
3114 | } | |
a64769d6 | 3115 | |
d3201eb4 DDM |
3116 | /* If we can't allocate a loop device, let's write to a regular file that we copy into the final |
3117 | * image so we can run in containers and without needing root privileges. On filesystems with | |
3118 | * reflinking support, we can take advantage of this and just reflink the result into the image. | |
3119 | */ | |
a64769d6 | 3120 | |
d3201eb4 | 3121 | log_debug_errno(r, "No access to loop devices, falling back to a regular file"); |
a64769d6 | 3122 | |
d3201eb4 DDM |
3123 | r = prepare_temporary_file(t, size); |
3124 | if (r < 0) | |
3125 | return r; | |
a64769d6 DDM |
3126 | |
3127 | *ret = TAKE_PTR(t); | |
3128 | ||
3129 | return 0; | |
3130 | } | |
3131 | ||
3132 | static int partition_target_grow(PartitionTarget *t, uint64_t size) { | |
3133 | int r; | |
3134 | ||
3135 | assert(t); | |
3136 | ||
3137 | if (t->loop) { | |
3138 | r = loop_device_refresh_size(t->loop, UINT64_MAX, size); | |
3139 | if (r < 0) | |
3140 | return log_error_errno(r, "Failed to refresh loopback device size: %m"); | |
3141 | } else if (t->fd >= 0) { | |
3142 | if (ftruncate(t->fd, size) < 0) | |
3143 | return log_error_errno(errno, "Failed to grow '%s' to %s by truncation: %m", | |
3144 | t->path, FORMAT_BYTES(size)); | |
3145 | } | |
3146 | ||
3147 | return 0; | |
3148 | } | |
3149 | ||
3150 | static int partition_target_sync(Context *context, Partition *p, PartitionTarget *t) { | |
3151 | int whole_fd, r; | |
3152 | ||
3153 | assert(context); | |
3154 | assert(p); | |
3155 | assert(t); | |
3156 | ||
3157 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3158 | ||
3159 | if (t->loop) { | |
3160 | r = loop_device_sync(t->loop); | |
3161 | if (r < 0) | |
3162 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3163 | } else if (t->fd >= 0) { | |
3164 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3165 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3166 | ||
3167 | r = copy_bytes(t->fd, whole_fd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_FSYNC); | |
3168 | if (r < 0) | |
3169 | return log_error_errno(r, "Failed to copy bytes to partition: %m"); | |
3170 | } else { | |
3171 | if (fsync(t->whole_fd) < 0) | |
3172 | return log_error_errno(errno, "Failed to sync changes: %m"); | |
3173 | } | |
3174 | ||
3175 | return 0; | |
3176 | } | |
3177 | ||
48a09a8f DDM |
3178 | static int partition_encrypt(Context *context, Partition *p, const char *node) { |
3179 | #if HAVE_LIBCRYPTSETUP && HAVE_CRYPT_SET_DATA_OFFSET && HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE && HAVE_CRYPT_REENCRYPT | |
3180 | struct crypt_params_luks2 luks_params = { | |
922576e4 DDM |
3181 | .label = strempty(ASSERT_PTR(p)->new_label), |
3182 | .sector_size = ASSERT_PTR(context)->sector_size, | |
48a09a8f DDM |
3183 | .data_device = node, |
3184 | }; | |
3185 | struct crypt_params_reencrypt reencrypt_params = { | |
3186 | .mode = CRYPT_REENCRYPT_ENCRYPT, | |
3187 | .direction = CRYPT_REENCRYPT_BACKWARD, | |
3188 | .resilience = "datashift", | |
3189 | .data_shift = LUKS2_METADATA_SIZE / 512, | |
3190 | .luks2 = &luks_params, | |
3191 | .flags = CRYPT_REENCRYPT_INITIALIZE_ONLY|CRYPT_REENCRYPT_MOVE_FIRST_SEGMENT, | |
3192 | }; | |
0d12936d | 3193 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
48a09a8f DDM |
3194 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; |
3195 | _cleanup_fclose_ FILE *h = NULL; | |
3196 | _cleanup_free_ char *hp = NULL; | |
3197 | const char *passphrase = NULL; | |
3198 | size_t passphrase_size = 0; | |
b9df3536 | 3199 | sd_id128_t uuid; |
0b75744d | 3200 | const char *vt; |
b9df3536 LP |
3201 | int r; |
3202 | ||
994b3031 | 3203 | assert(context); |
b9df3536 | 3204 | assert(p); |
889914ef LP |
3205 | assert(p->encrypt != ENCRYPT_OFF); |
3206 | ||
0d12936d LP |
3207 | r = dlopen_cryptsetup(); |
3208 | if (r < 0) | |
3209 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
3210 | ||
b9df3536 LP |
3211 | r = derive_uuid(p->new_uuid, "luks-uuid", &uuid); |
3212 | if (r < 0) | |
3213 | return r; | |
3214 | ||
3215 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); | |
3216 | ||
0b75744d DDM |
3217 | r = var_tmp_dir(&vt); |
3218 | if (r < 0) | |
3219 | return log_error_errno(r, "Failed to determine temporary files directory: %m"); | |
3220 | ||
3221 | r = fopen_temporary_child(vt, &h, &hp); | |
48a09a8f DDM |
3222 | if (r < 0) |
3223 | return log_error_errno(r, "Failed to create temporary LUKS header file: %m"); | |
3224 | ||
3225 | /* Weird cryptsetup requirement which requires the header file to be the size of at least one sector. */ | |
983154f5 | 3226 | r = ftruncate(fileno(h), context->sector_size); |
b9df3536 | 3227 | if (r < 0) |
48a09a8f DDM |
3228 | return log_error_errno(r, "Failed to grow temporary LUKS header file: %m"); |
3229 | ||
3230 | r = sym_crypt_init(&cd, hp); | |
3231 | if (r < 0) | |
3232 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", hp); | |
b9df3536 LP |
3233 | |
3234 | cryptsetup_enable_logging(cd); | |
3235 | ||
48a09a8f DDM |
3236 | /* Disable kernel keyring usage by libcryptsetup as a workaround for |
3237 | * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/273. This makes sure that we can do | |
3238 | * offline encryption even when repart is running in a container. */ | |
3239 | r = sym_crypt_volume_key_keyring(cd, false); | |
3240 | if (r < 0) | |
3241 | return log_error_errno(r, "Failed to disable kernel keyring: %m"); | |
3242 | ||
3243 | r = sym_crypt_metadata_locking(cd, false); | |
3244 | if (r < 0) | |
3245 | return log_error_errno(r, "Failed to disable metadata locking: %m"); | |
3246 | ||
3247 | r = sym_crypt_set_data_offset(cd, LUKS2_METADATA_SIZE / 512); | |
3248 | if (r < 0) | |
3249 | return log_error_errno(r, "Failed to set data offset: %m"); | |
3250 | ||
0d12936d | 3251 | r = sym_crypt_format(cd, |
b9df3536 LP |
3252 | CRYPT_LUKS2, |
3253 | "aes", | |
3254 | "xts-plain64", | |
b7416360 | 3255 | SD_ID128_TO_UUID_STRING(uuid), |
98e0456e DDM |
3256 | NULL, |
3257 | VOLUME_KEY_SIZE, | |
48a09a8f | 3258 | &luks_params); |
b9df3536 LP |
3259 | if (r < 0) |
3260 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
3261 | ||
889914ef LP |
3262 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
3263 | r = sym_crypt_keyslot_add_by_volume_key( | |
3264 | cd, | |
3265 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3266 | NULL, |
3267 | VOLUME_KEY_SIZE, | |
889914ef LP |
3268 | strempty(arg_key), |
3269 | arg_key_size); | |
3270 | if (r < 0) | |
3271 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
48a09a8f DDM |
3272 | |
3273 | passphrase = strempty(arg_key); | |
3274 | passphrase_size = arg_key_size; | |
889914ef LP |
3275 | } |
3276 | ||
3277 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
3278 | #if HAVE_TPM2 | |
889914ef LP |
3279 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; |
3280 | _cleanup_(erase_and_freep) void *secret = NULL; | |
02ef97cd | 3281 | _cleanup_free_ void *pubkey = NULL; |
889914ef | 3282 | _cleanup_free_ void *blob = NULL, *hash = NULL; |
02ef97cd | 3283 | size_t secret_size, blob_size, hash_size, pubkey_size = 0; |
2b92a672 | 3284 | uint16_t pcr_bank, primary_alg; |
889914ef LP |
3285 | int keyslot; |
3286 | ||
02ef97cd LP |
3287 | if (arg_tpm2_public_key_pcr_mask != 0) { |
3288 | r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey, &pubkey_size); | |
3289 | if (r < 0) { | |
3290 | if (arg_tpm2_public_key || r != -ENOENT) | |
3291 | return log_error_errno(r, "Failed read TPM PCR public key: %m"); | |
3292 | ||
3293 | log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m"); | |
3294 | arg_tpm2_public_key_pcr_mask = 0; | |
3295 | } | |
3296 | } | |
3297 | ||
d9b5841d LP |
3298 | r = tpm2_seal(arg_tpm2_device, |
3299 | arg_tpm2_pcr_mask, | |
02ef97cd LP |
3300 | pubkey, pubkey_size, |
3301 | arg_tpm2_public_key_pcr_mask, | |
d9b5841d LP |
3302 | /* pin= */ NULL, |
3303 | &secret, &secret_size, | |
3304 | &blob, &blob_size, | |
3305 | &hash, &hash_size, | |
3306 | &pcr_bank, | |
3307 | &primary_alg); | |
889914ef LP |
3308 | if (r < 0) |
3309 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
3310 | ||
3311 | r = base64mem(secret, secret_size, &base64_encoded); | |
3312 | if (r < 0) | |
3313 | return log_error_errno(r, "Failed to base64 encode secret key: %m"); | |
3314 | ||
3315 | r = cryptsetup_set_minimal_pbkdf(cd); | |
3316 | if (r < 0) | |
3317 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
3318 | ||
3319 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
3320 | cd, | |
3321 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3322 | NULL, |
3323 | VOLUME_KEY_SIZE, | |
889914ef LP |
3324 | base64_encoded, |
3325 | strlen(base64_encoded)); | |
3326 | if (keyslot < 0) | |
48a09a8f | 3327 | return log_error_errno(keyslot, "Failed to add new TPM2 key: %m"); |
889914ef | 3328 | |
f0f4fcae LP |
3329 | r = tpm2_make_luks2_json( |
3330 | keyslot, | |
3331 | arg_tpm2_pcr_mask, | |
3332 | pcr_bank, | |
02ef97cd LP |
3333 | pubkey, pubkey_size, |
3334 | arg_tpm2_public_key_pcr_mask, | |
f0f4fcae LP |
3335 | primary_alg, |
3336 | blob, blob_size, | |
3337 | hash, hash_size, | |
3338 | 0, | |
3339 | &v); | |
889914ef LP |
3340 | if (r < 0) |
3341 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
3342 | ||
3343 | r = cryptsetup_add_token_json(cd, v); | |
3344 | if (r < 0) | |
3345 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
48a09a8f DDM |
3346 | |
3347 | passphrase = base64_encoded; | |
3348 | passphrase_size = strlen(base64_encoded); | |
889914ef LP |
3349 | #else |
3350 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3351 | "Support for TPM2 enrollment not enabled."); | |
3352 | #endif | |
3353 | } | |
b9df3536 | 3354 | |
48a09a8f | 3355 | r = sym_crypt_reencrypt_init_by_passphrase( |
b9df3536 | 3356 | cd, |
98e0456e | 3357 | NULL, |
48a09a8f DDM |
3358 | passphrase, |
3359 | passphrase_size, | |
3360 | CRYPT_ANY_SLOT, | |
3361 | 0, | |
3362 | sym_crypt_get_cipher(cd), | |
3363 | sym_crypt_get_cipher_mode(cd), | |
3364 | &reencrypt_params); | |
b9df3536 | 3365 | if (r < 0) |
48a09a8f | 3366 | return log_error_errno(r, "Failed to prepare for reencryption: %m"); |
b9df3536 | 3367 | |
48a09a8f DDM |
3368 | /* crypt_reencrypt_init_by_passphrase() doesn't actually put the LUKS header at the front, we have |
3369 | * to do that ourselves. */ | |
b9df3536 | 3370 | |
48a09a8f DDM |
3371 | sym_crypt_free(cd); |
3372 | cd = NULL; | |
b9df3536 | 3373 | |
48a09a8f DDM |
3374 | r = sym_crypt_init(&cd, node); |
3375 | if (r < 0) | |
3376 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); | |
b9df3536 | 3377 | |
48a09a8f DDM |
3378 | r = sym_crypt_header_restore(cd, CRYPT_LUKS2, hp); |
3379 | if (r < 0) | |
3380 | return log_error_errno(r, "Failed to place new LUKS header at head of %s: %m", node); | |
b9df3536 | 3381 | |
48a09a8f | 3382 | reencrypt_params.flags &= ~CRYPT_REENCRYPT_INITIALIZE_ONLY; |
b9df3536 | 3383 | |
48a09a8f DDM |
3384 | r = sym_crypt_reencrypt_init_by_passphrase( |
3385 | cd, | |
3386 | NULL, | |
3387 | passphrase, | |
3388 | passphrase_size, | |
3389 | CRYPT_ANY_SLOT, | |
3390 | 0, | |
3391 | NULL, | |
3392 | NULL, | |
3393 | &reencrypt_params); | |
3394 | if (r < 0) | |
3395 | return log_error_errno(r, "Failed to load reencryption context: %m"); | |
b9df3536 | 3396 | |
48a09a8f | 3397 | r = sym_crypt_reencrypt(cd, NULL); |
b9df3536 | 3398 | if (r < 0) |
48a09a8f DDM |
3399 | return log_error_errno(r, "Failed to encrypt %s: %m", node); |
3400 | ||
3401 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
b9df3536 | 3402 | |
3dd8ae5c | 3403 | return 0; |
48a09a8f DDM |
3404 | #else |
3405 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3406 | "libcryptsetup is not supported or is missing required symbols, cannot encrypt: %m"); | |
3dd8ae5c | 3407 | #endif |
b9df3536 LP |
3408 | } |
3409 | ||
2b392d86 DDM |
3410 | static int partition_format_verity_hash( |
3411 | Context *context, | |
3412 | Partition *p, | |
3413 | const char *data_node) { | |
3414 | ||
3415 | #if HAVE_LIBCRYPTSETUP | |
3416 | Partition *dp; | |
a64769d6 | 3417 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
2b392d86 DDM |
3418 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
3419 | _cleanup_free_ uint8_t *rh = NULL; | |
3420 | size_t rhs; | |
a64769d6 | 3421 | int r; |
2b392d86 DDM |
3422 | |
3423 | assert(context); | |
3424 | assert(p); | |
3425 | assert(data_node); | |
3426 | ||
3427 | if (p->dropped) | |
3428 | return 0; | |
3429 | ||
3430 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3431 | return 0; | |
3432 | ||
3433 | if (p->verity != VERITY_HASH) | |
3434 | return 0; | |
3435 | ||
3436 | if (partition_skip(p)) | |
3437 | return 0; | |
3438 | ||
3439 | assert_se(dp = p->siblings[VERITY_DATA]); | |
3440 | assert(!dp->dropped); | |
3441 | ||
2b392d86 DDM |
3442 | r = dlopen_cryptsetup(); |
3443 | if (r < 0) | |
3444 | return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m"); | |
3445 | ||
a64769d6 | 3446 | r = partition_target_prepare(context, p, p->new_size, /*need_path=*/ true, &t); |
2b392d86 | 3447 | if (r < 0) |
a64769d6 | 3448 | return r; |
2b392d86 | 3449 | |
a64769d6 | 3450 | r = sym_crypt_init(&cd, partition_target_path(t)); |
2b392d86 DDM |
3451 | if (r < 0) |
3452 | return log_error_errno(r, "Failed to allocate libcryptsetup context: %m"); | |
3453 | ||
3454 | r = sym_crypt_format( | |
3455 | cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, | |
3456 | &(struct crypt_params_verity){ | |
3457 | .data_device = data_node, | |
3458 | .flags = CRYPT_VERITY_CREATE_HASH, | |
3459 | .hash_name = "sha256", | |
3460 | .hash_type = 1, | |
3461 | .data_block_size = context->sector_size, | |
3462 | .hash_block_size = context->sector_size, | |
3463 | .salt_size = 32, | |
3464 | }); | |
3465 | if (r < 0) | |
3466 | return log_error_errno(r, "Failed to setup verity hash data: %m"); | |
3467 | ||
a64769d6 DDM |
3468 | r = partition_target_sync(context, p, t); |
3469 | if (r < 0) | |
3470 | return r; | |
3471 | ||
2b392d86 DDM |
3472 | r = sym_crypt_get_volume_key_size(cd); |
3473 | if (r < 0) | |
3474 | return log_error_errno(r, "Failed to determine verity root hash size: %m"); | |
3475 | rhs = (size_t) r; | |
3476 | ||
3477 | rh = malloc(rhs); | |
3478 | if (!rh) | |
3479 | return log_oom(); | |
3480 | ||
3481 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh, &rhs, NULL, 0); | |
3482 | if (r < 0) | |
3483 | return log_error_errno(r, "Failed to get verity root hash: %m"); | |
3484 | ||
3485 | assert(rhs >= sizeof(sd_id128_t) * 2); | |
3486 | ||
3487 | if (!dp->new_uuid_is_set) { | |
3488 | memcpy_safe(dp->new_uuid.bytes, rh, sizeof(sd_id128_t)); | |
3489 | dp->new_uuid_is_set = true; | |
3490 | } | |
3491 | ||
3492 | if (!p->new_uuid_is_set) { | |
3493 | memcpy_safe(p->new_uuid.bytes, rh + rhs - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
3494 | p->new_uuid_is_set = true; | |
3495 | } | |
3496 | ||
3497 | p->roothash = TAKE_PTR(rh); | |
3498 | p->roothash_size = rhs; | |
3499 | ||
3500 | return 0; | |
3501 | #else | |
3502 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes: %m"); | |
3503 | #endif | |
3504 | } | |
3505 | ||
4ecd39c5 DDM |
3506 | static int sign_verity_roothash( |
3507 | const uint8_t *roothash, | |
3508 | size_t roothash_size, | |
3509 | uint8_t **ret_signature, | |
3510 | size_t *ret_signature_size) { | |
3511 | ||
3512 | #if HAVE_OPENSSL | |
3513 | _cleanup_(BIO_freep) BIO *rb = NULL; | |
3514 | _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL; | |
3515 | _cleanup_free_ char *hex = NULL; | |
3516 | _cleanup_free_ uint8_t *sig = NULL; | |
3517 | int sigsz; | |
3518 | ||
3519 | assert(roothash); | |
3520 | assert(roothash_size > 0); | |
3521 | assert(ret_signature); | |
3522 | assert(ret_signature_size); | |
3523 | ||
3524 | hex = hexmem(roothash, roothash_size); | |
3525 | if (!hex) | |
3526 | return log_oom(); | |
3527 | ||
3528 | rb = BIO_new_mem_buf(hex, -1); | |
3529 | if (!rb) | |
3530 | return log_oom(); | |
3531 | ||
3532 | p7 = PKCS7_sign(arg_certificate, arg_private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY); | |
3533 | if (!p7) | |
3534 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s", | |
3535 | ERR_error_string(ERR_get_error(), NULL)); | |
3536 | ||
3537 | sigsz = i2d_PKCS7(p7, &sig); | |
3538 | if (sigsz < 0) | |
3539 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s", | |
3540 | ERR_error_string(ERR_get_error(), NULL)); | |
3541 | ||
3542 | *ret_signature = TAKE_PTR(sig); | |
3543 | *ret_signature_size = sigsz; | |
3544 | ||
3545 | return 0; | |
3546 | #else | |
3547 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot setup verity signature: %m"); | |
3548 | #endif | |
3549 | } | |
3550 | ||
3551 | static int partition_format_verity_sig(Context *context, Partition *p) { | |
3552 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
3553 | _cleanup_free_ uint8_t *sig = NULL; | |
3554 | _cleanup_free_ char *text = NULL; | |
3555 | Partition *hp; | |
3556 | uint8_t fp[X509_FINGERPRINT_SIZE]; | |
3557 | size_t sigsz = 0, padsz; /* avoid false maybe-uninitialized warning */ | |
3558 | int whole_fd, r; | |
3559 | ||
3560 | assert(p->verity == VERITY_SIG); | |
3561 | ||
3562 | if (p->dropped) | |
3563 | return 0; | |
3564 | ||
3565 | if (PARTITION_EXISTS(p)) | |
3566 | return 0; | |
3567 | ||
3568 | if (partition_skip(p)) | |
3569 | return 0; | |
3570 | ||
3571 | assert_se(hp = p->siblings[VERITY_HASH]); | |
3572 | assert(!hp->dropped); | |
3573 | ||
3574 | assert(arg_certificate); | |
3575 | ||
3576 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3577 | ||
3578 | r = sign_verity_roothash(hp->roothash, hp->roothash_size, &sig, &sigsz); | |
3579 | if (r < 0) | |
3580 | return r; | |
3581 | ||
3582 | r = x509_fingerprint(arg_certificate, fp); | |
3583 | if (r < 0) | |
3584 | return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m"); | |
3585 | ||
3586 | r = json_build(&v, | |
3587 | JSON_BUILD_OBJECT( | |
3588 | JSON_BUILD_PAIR("rootHash", JSON_BUILD_HEX(hp->roothash, hp->roothash_size)), | |
3589 | JSON_BUILD_PAIR( | |
3590 | "certificateFingerprint", | |
3591 | JSON_BUILD_HEX(fp, sizeof(fp)) | |
3592 | ), | |
3593 | JSON_BUILD_PAIR("signature", JSON_BUILD_BASE64(sig, sigsz)) | |
3594 | ) | |
3595 | ); | |
3596 | if (r < 0) | |
3597 | return log_error_errno(r, "Failed to build JSON object: %m"); | |
3598 | ||
3599 | r = json_variant_format(v, 0, &text); | |
3600 | if (r < 0) | |
3601 | return log_error_errno(r, "Failed to format JSON object: %m"); | |
3602 | ||
3603 | padsz = round_up_size(strlen(text), 4096); | |
3604 | assert_se(padsz <= p->new_size); | |
3605 | ||
3606 | r = strgrowpad0(&text, padsz); | |
3607 | if (r < 0) | |
3608 | return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(padsz)); | |
3609 | ||
3610 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3611 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3612 | ||
3613 | r = loop_write(whole_fd, text, padsz, /*do_poll=*/ false); | |
3614 | if (r < 0) | |
3615 | return log_error_errno(r, "Failed to write verity signature to partition: %m"); | |
3616 | ||
3617 | if (fsync(whole_fd) < 0) | |
3618 | return log_error_errno(errno, "Failed to synchronize verity signature JSON: %m"); | |
3619 | ||
3620 | return 0; | |
3621 | } | |
3622 | ||
757bc2e4 | 3623 | static int context_copy_blocks(Context *context) { |
a64769d6 | 3624 | int r; |
757bc2e4 LP |
3625 | |
3626 | assert(context); | |
3627 | ||
3628 | /* Copy in file systems on the block level */ | |
3629 | ||
3630 | LIST_FOREACH(partitions, p, context->partitions) { | |
a64769d6 | 3631 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
757bc2e4 LP |
3632 | |
3633 | if (p->copy_blocks_fd < 0) | |
3634 | continue; | |
3635 | ||
3636 | if (p->dropped) | |
3637 | continue; | |
3638 | ||
3639 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
3640 | continue; | |
3641 | ||
81d1098b DDM |
3642 | if (partition_skip(p)) |
3643 | continue; | |
3644 | ||
757bc2e4 LP |
3645 | assert(p->new_size != UINT64_MAX); |
3646 | assert(p->copy_blocks_size != UINT64_MAX); | |
48a09a8f | 3647 | assert(p->new_size >= p->copy_blocks_size + (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
757bc2e4 | 3648 | |
a64769d6 DDM |
3649 | r = partition_target_prepare(context, p, p->new_size, |
3650 | /*need_path=*/ p->encrypt != ENCRYPT_OFF || p->siblings[VERITY_HASH], | |
3651 | &t); | |
3652 | if (r < 0) | |
3653 | return r; | |
757bc2e4 | 3654 | |
2b59bf51 ZJS |
3655 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", |
3656 | p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno); | |
757bc2e4 | 3657 | |
a64769d6 | 3658 | r = copy_bytes(p->copy_blocks_fd, partition_target_fd(t), p->copy_blocks_size, COPY_REFLINK); |
757bc2e4 LP |
3659 | if (r < 0) |
3660 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
3661 | ||
889914ef | 3662 | if (p->encrypt != ENCRYPT_OFF) { |
a64769d6 | 3663 | r = partition_encrypt(context, p, partition_target_path(t)); |
b9df3536 LP |
3664 | if (r < 0) |
3665 | return r; | |
b9df3536 LP |
3666 | } |
3667 | ||
a64769d6 DDM |
3668 | r = partition_target_sync(context, p, t); |
3669 | if (r < 0) | |
3670 | return r; | |
48a09a8f | 3671 | |
757bc2e4 | 3672 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
2b392d86 DDM |
3673 | |
3674 | if (p->siblings[VERITY_HASH]) { | |
a64769d6 DDM |
3675 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
3676 | partition_target_path(t)); | |
2b392d86 DDM |
3677 | if (r < 0) |
3678 | return r; | |
3679 | } | |
4ecd39c5 DDM |
3680 | |
3681 | if (p->siblings[VERITY_SIG]) { | |
3682 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); | |
3683 | if (r < 0) | |
3684 | return r; | |
3685 | } | |
757bc2e4 LP |
3686 | } |
3687 | ||
3688 | return 0; | |
3689 | } | |
3690 | ||
d2ac7698 DDM |
3691 | static int do_copy_files( |
3692 | Partition *p, | |
3693 | const char *root, | |
3694 | uid_t override_uid, | |
3695 | gid_t override_gid, | |
3696 | const Set *denylist) { | |
e59678b2 | 3697 | |
8a794850 LP |
3698 | int r; |
3699 | ||
3700 | assert(p); | |
92cd7e7c | 3701 | assert(root); |
8a794850 LP |
3702 | |
3703 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
3704 | _cleanup_close_ int sfd = -1, pfd = -1, tfd = -1; | |
8a794850 | 3705 | |
fd1ca01a | 3706 | sfd = chase_symlinks_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL); |
8a794850 LP |
3707 | if (sfd < 0) |
3708 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
3709 | ||
3710 | r = fd_verify_regular(sfd); | |
3711 | if (r < 0) { | |
3712 | if (r != -EISDIR) | |
3713 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
3714 | ||
3715 | /* We are looking at a directory */ | |
fd1ca01a | 3716 | tfd = chase_symlinks_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3717 | if (tfd < 0) { |
f21a3a82 LP |
3718 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3719 | ||
8a794850 LP |
3720 | if (tfd != -ENOENT) |
3721 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
3722 | ||
f21a3a82 LP |
3723 | r = path_extract_filename(*target, &fn); |
3724 | if (r < 0) | |
3725 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3726 | ||
3727 | r = path_extract_directory(*target, &dn); | |
3728 | if (r < 0) | |
3729 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3730 | ||
92cd7e7c | 3731 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3732 | if (r < 0) |
3733 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
3734 | ||
fd1ca01a | 3735 | pfd = chase_symlinks_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 LP |
3736 | if (pfd < 0) |
3737 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
3738 | ||
8a050905 DDM |
3739 | /* Make sure everything is owned by the user running repart so that |
3740 | * make_filesystem() can map the user running repart to "root" in a user | |
3741 | * namespace to have the files owned by root in the final image. */ | |
3742 | ||
652d9040 LP |
3743 | r = copy_tree_at( |
3744 | sfd, ".", | |
6020d00d | 3745 | pfd, fn, |
d2ac7698 | 3746 | override_uid, override_gid, |
81427d0f | 3747 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS, |
c0fad2d9 | 3748 | denylist); |
8a794850 | 3749 | } else |
652d9040 LP |
3750 | r = copy_tree_at( |
3751 | sfd, ".", | |
3752 | tfd, ".", | |
d2ac7698 | 3753 | override_uid, override_gid, |
81427d0f | 3754 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS, |
c0fad2d9 | 3755 | denylist); |
8a794850 | 3756 | if (r < 0) |
cf2ed23c DDM |
3757 | return log_error_errno(r, "Failed to copy '%s%s' to '%s%s': %m", |
3758 | strempty(arg_root), *source, strempty(root), *target); | |
8a794850 | 3759 | } else { |
f21a3a82 LP |
3760 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3761 | ||
8a794850 LP |
3762 | /* We are looking at a regular file */ |
3763 | ||
f21a3a82 LP |
3764 | r = path_extract_filename(*target, &fn); |
3765 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
3766 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
3767 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
3768 | if (r < 0) | |
3769 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3770 | ||
3771 | r = path_extract_directory(*target, &dn); | |
3772 | if (r < 0) | |
3773 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3774 | ||
92cd7e7c | 3775 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3776 | if (r < 0) |
3777 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
3778 | ||
fd1ca01a | 3779 | pfd = chase_symlinks_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3780 | if (pfd < 0) |
a0ff9971 | 3781 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 3782 | |
e2819067 | 3783 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
3784 | if (tfd < 0) |
3785 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
3786 | ||
81427d0f | 3787 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_SIGINT); |
8a794850 | 3788 | if (r < 0) |
554a2b64 | 3789 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 3790 | |
d2ac7698 DDM |
3791 | if (fchown(tfd, override_uid, override_gid) < 0) |
3792 | return log_error_errno(r, "Failed to change ownership of %s", *target); | |
3793 | ||
23e026de | 3794 | (void) copy_xattr(sfd, tfd, COPY_ALL_XATTRS); |
8a794850 LP |
3795 | (void) copy_access(sfd, tfd); |
3796 | (void) copy_times(sfd, tfd, 0); | |
3797 | } | |
3798 | } | |
3799 | ||
3800 | return 0; | |
3801 | } | |
3802 | ||
d2ac7698 | 3803 | static int do_make_directories(Partition *p, uid_t override_uid, gid_t override_gid, const char *root) { |
d83d8048 LP |
3804 | int r; |
3805 | ||
3806 | assert(p); | |
92cd7e7c | 3807 | assert(root); |
d83d8048 LP |
3808 | |
3809 | STRV_FOREACH(d, p->make_directories) { | |
3810 | ||
d2ac7698 | 3811 | r = mkdir_p_root(root, *d, override_uid, override_gid, 0755); |
d83d8048 LP |
3812 | if (r < 0) |
3813 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
3814 | } | |
3815 | ||
3816 | return 0; | |
3817 | } | |
3818 | ||
d3201eb4 DDM |
3819 | static bool partition_needs_populate(Partition *p) { |
3820 | assert(p); | |
3821 | return !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories); | |
3822 | } | |
3823 | ||
e59678b2 | 3824 | static int partition_populate_directory(Partition *p, const Set *denylist, char **ret) { |
95bfd3cd | 3825 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
488bb758 | 3826 | _cleanup_close_ int rfd = -1; |
95bfd3cd DDM |
3827 | int r; |
3828 | ||
e59678b2 | 3829 | assert(ret); |
95bfd3cd | 3830 | |
488bb758 DDM |
3831 | rfd = mkdtemp_open("/var/tmp/repart-XXXXXX", 0, &root); |
3832 | if (rfd < 0) | |
3833 | return log_error_errno(rfd, "Failed to create temporary directory: %m"); | |
95bfd3cd | 3834 | |
488bb758 | 3835 | if (fchmod(rfd, 0755) < 0) |
0b34f351 DDM |
3836 | return log_error_errno(errno, "Failed to change mode of temporary directory: %m"); |
3837 | ||
d2ac7698 | 3838 | r = do_copy_files(p, root, getuid(), getgid(), denylist); |
95bfd3cd DDM |
3839 | if (r < 0) |
3840 | return r; | |
3841 | ||
d2ac7698 | 3842 | r = do_make_directories(p, getuid(), getgid(), root); |
95bfd3cd DDM |
3843 | if (r < 0) |
3844 | return r; | |
3845 | ||
e59678b2 | 3846 | *ret = TAKE_PTR(root); |
95bfd3cd DDM |
3847 | return 0; |
3848 | } | |
3849 | ||
c0fad2d9 | 3850 | static int partition_populate_filesystem(Partition *p, const char *node, const Set *denylist) { |
8a794850 LP |
3851 | int r; |
3852 | ||
3853 | assert(p); | |
3854 | assert(node); | |
3855 | ||
a7f1f7d8 | 3856 | log_info("Populating %s filesystem with files.", p->format); |
8a794850 LP |
3857 | |
3858 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
3859 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
3860 | * detached mount propagation. */ | |
3861 | ||
3862 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
3863 | if (r < 0) | |
3864 | return r; | |
3865 | if (r == 0) { | |
3866 | static const char fs[] = "/run/systemd/mount-root"; | |
3867 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
3868 | ||
3869 | r = mkdir_p(fs, 0700); | |
3870 | if (r < 0) { | |
3871 | log_error_errno(r, "Failed to create mount point: %m"); | |
3872 | _exit(EXIT_FAILURE); | |
3873 | } | |
3874 | ||
511a8cfe | 3875 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
3876 | _exit(EXIT_FAILURE); |
3877 | ||
d2ac7698 | 3878 | if (do_copy_files(p, fs, 0, 0, denylist) < 0) |
8a794850 LP |
3879 | _exit(EXIT_FAILURE); |
3880 | ||
d2ac7698 | 3881 | if (do_make_directories(p, 0, 0, fs) < 0) |
d83d8048 LP |
3882 | _exit(EXIT_FAILURE); |
3883 | ||
8a794850 LP |
3884 | r = syncfs_path(AT_FDCWD, fs); |
3885 | if (r < 0) { | |
3886 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
3887 | _exit(EXIT_FAILURE); | |
3888 | } | |
3889 | ||
3890 | _exit(EXIT_SUCCESS); | |
3891 | } | |
3892 | ||
a7f1f7d8 | 3893 | log_info("Successfully populated %s filesystem with files.", p->format); |
8a794850 LP |
3894 | return 0; |
3895 | } | |
3896 | ||
c0fad2d9 DDM |
3897 | static int make_copy_files_denylist(Context *context, Set **ret) { |
3898 | _cleanup_set_free_ Set *denylist = NULL; | |
3899 | int r; | |
3900 | ||
3901 | assert(context); | |
3902 | assert(ret); | |
3903 | ||
3904 | LIST_FOREACH(partitions, p, context->partitions) { | |
22e932f4 | 3905 | const char *sources = gpt_partition_type_mountpoint_nulstr(p->type); |
c0fad2d9 DDM |
3906 | if (!sources) |
3907 | continue; | |
3908 | ||
3909 | NULSTR_FOREACH(s, sources) { | |
3910 | _cleanup_free_ char *d = NULL; | |
3911 | struct stat st; | |
3912 | ||
3913 | r = chase_symlinks_and_stat(s, arg_root, CHASE_PREFIX_ROOT, NULL, &st, NULL); | |
3914 | if (r == -ENOENT) | |
3915 | continue; | |
3916 | if (r < 0) | |
3917 | return log_error_errno(r, "Failed to stat source file '%s%s': %m", | |
3918 | strempty(arg_root), s); | |
3919 | ||
3920 | if (set_contains(denylist, &st)) | |
3921 | continue; | |
3922 | ||
3923 | d = memdup(&st, sizeof(st)); | |
3924 | if (!d) | |
3925 | return log_oom(); | |
3926 | if (set_ensure_put(&denylist, &inode_hash_ops, d) < 0) | |
3927 | return log_oom(); | |
3928 | ||
3929 | TAKE_PTR(d); | |
3930 | } | |
3931 | } | |
3932 | ||
3933 | *ret = TAKE_PTR(denylist); | |
3934 | return 0; | |
3935 | } | |
3936 | ||
53171c04 | 3937 | static int context_mkfs(Context *context) { |
c0fad2d9 | 3938 | _cleanup_set_free_ Set *denylist = NULL; |
a64769d6 | 3939 | int r; |
53171c04 LP |
3940 | |
3941 | assert(context); | |
3942 | ||
3943 | /* Make a file system */ | |
3944 | ||
c0fad2d9 DDM |
3945 | r = make_copy_files_denylist(context, &denylist); |
3946 | if (r < 0) | |
3947 | return r; | |
3948 | ||
53171c04 | 3949 | LIST_FOREACH(partitions, p, context->partitions) { |
e59678b2 | 3950 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
a64769d6 | 3951 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
53171c04 LP |
3952 | |
3953 | if (p->dropped) | |
3954 | continue; | |
3955 | ||
3956 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3957 | continue; | |
3958 | ||
3959 | if (!p->format) | |
3960 | continue; | |
3961 | ||
c4a87b76 DDM |
3962 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
3963 | if (p->copy_blocks_fd >= 0) | |
3964 | continue; | |
3965 | ||
81d1098b DDM |
3966 | if (partition_skip(p)) |
3967 | continue; | |
3968 | ||
53171c04 LP |
3969 | assert(p->offset != UINT64_MAX); |
3970 | assert(p->new_size != UINT64_MAX); | |
48a09a8f | 3971 | assert(p->new_size >= (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
53171c04 | 3972 | |
a64769d6 DDM |
3973 | /* If we're doing encryption, we make sure we keep free space at the end which is required |
3974 | * for cryptsetup's offline encryption. */ | |
3975 | r = partition_target_prepare(context, p, | |
3976 | p->new_size - (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0), | |
3977 | /*need_path=*/ true, | |
3978 | &t); | |
53171c04 | 3979 | if (r < 0) |
a64769d6 | 3980 | return r; |
53171c04 | 3981 | |
53171c04 LP |
3982 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
3983 | ||
d3201eb4 DDM |
3984 | /* If we're not writing to a loop device or if we're populating a read-only filesystem, we |
3985 | * have to populate using the filesystem's mkfs's --root (or equivalent) option. To do that, | |
3986 | * we need to set up the final directory tree beforehand. */ | |
3987 | ||
3988 | if (partition_needs_populate(p) && (!t->loop || fstype_is_ro(p->format))) { | |
3989 | if (!mkfs_supports_root_option(p->format)) | |
3990 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
3991 | "Loop device access is required to populate %s filesystems.", | |
3992 | p->format); | |
95bfd3cd | 3993 | |
e59678b2 | 3994 | r = partition_populate_directory(p, denylist, &root); |
143c3c08 DDM |
3995 | if (r < 0) |
3996 | return r; | |
3997 | } | |
95bfd3cd | 3998 | |
a64769d6 DDM |
3999 | r = make_filesystem(partition_target_path(t), p->format, strempty(p->new_label), root, |
4000 | p->fs_uuid, arg_discard); | |
48a09a8f | 4001 | if (r < 0) |
53171c04 LP |
4002 | return r; |
4003 | ||
4004 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
4005 | ||
d3201eb4 DDM |
4006 | /* If we're writing to a loop device, we can now mount the empty filesystem and populate it. */ |
4007 | if (partition_needs_populate(p) && !root) { | |
4008 | assert(t->loop); | |
4009 | ||
4010 | r = partition_populate_filesystem(p, t->loop->node, denylist); | |
48a09a8f | 4011 | if (r < 0) |
143c3c08 | 4012 | return r; |
b9df3536 LP |
4013 | } |
4014 | ||
889914ef | 4015 | if (p->encrypt != ENCRYPT_OFF) { |
a64769d6 | 4016 | r = partition_target_grow(t, p->new_size); |
b9df3536 | 4017 | if (r < 0) |
a64769d6 | 4018 | return r; |
b9df3536 | 4019 | |
a64769d6 | 4020 | r = partition_encrypt(context, p, partition_target_path(t)); |
48a09a8f DDM |
4021 | if (r < 0) |
4022 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
b9df3536 | 4023 | } |
8a794850 | 4024 | |
48a09a8f DDM |
4025 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and |
4026 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
4027 | * the disk. */ | |
4028 | ||
a64769d6 | 4029 | r = partition_target_sync(context, p, t); |
53171c04 | 4030 | if (r < 0) |
a64769d6 | 4031 | return r; |
b5b7879a | 4032 | |
2b392d86 | 4033 | if (p->siblings[VERITY_HASH]) { |
a64769d6 DDM |
4034 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
4035 | partition_target_path(t)); | |
2b392d86 DDM |
4036 | if (r < 0) |
4037 | return r; | |
b5b7879a | 4038 | } |
4ecd39c5 DDM |
4039 | |
4040 | if (p->siblings[VERITY_SIG]) { | |
4041 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); | |
4042 | if (r < 0) | |
4043 | return r; | |
4044 | } | |
b5b7879a DDM |
4045 | } |
4046 | ||
4047 | return 0; | |
4048 | } | |
4049 | ||
b456191d DDM |
4050 | static int parse_x509_certificate(const char *certificate, size_t certificate_size, X509 **ret) { |
4051 | #if HAVE_OPENSSL | |
4052 | _cleanup_(X509_freep) X509 *cert = NULL; | |
4053 | _cleanup_(BIO_freep) BIO *cb = NULL; | |
4054 | ||
4055 | assert(certificate); | |
4056 | assert(certificate_size > 0); | |
4057 | assert(ret); | |
4058 | ||
4059 | cb = BIO_new_mem_buf(certificate, certificate_size); | |
4060 | if (!cb) | |
4061 | return log_oom(); | |
4062 | ||
4063 | cert = PEM_read_bio_X509(cb, NULL, NULL, NULL); | |
4064 | if (!cert) | |
4065 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Failed to parse X.509 certificate: %s", | |
4066 | ERR_error_string(ERR_get_error(), NULL)); | |
4067 | ||
4068 | if (ret) | |
4069 | *ret = TAKE_PTR(cert); | |
4070 | ||
4071 | return 0; | |
4072 | #else | |
4073 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse X509 certificate."); | |
4074 | #endif | |
4075 | } | |
4076 | ||
4077 | static int parse_private_key(const char *key, size_t key_size, EVP_PKEY **ret) { | |
4078 | #if HAVE_OPENSSL | |
4079 | _cleanup_(BIO_freep) BIO *kb = NULL; | |
4080 | _cleanup_(EVP_PKEY_freep) EVP_PKEY *pk = NULL; | |
4081 | ||
4082 | assert(key); | |
4083 | assert(key_size > 0); | |
4084 | assert(ret); | |
4085 | ||
4086 | kb = BIO_new_mem_buf(key, key_size); | |
4087 | if (!kb) | |
4088 | return log_oom(); | |
4089 | ||
4090 | pk = PEM_read_bio_PrivateKey(kb, NULL, NULL, NULL); | |
4091 | if (!pk) | |
4092 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to parse PEM private key: %s", | |
4093 | ERR_error_string(ERR_get_error(), NULL)); | |
4094 | ||
4095 | if (ret) | |
4096 | *ret = TAKE_PTR(pk); | |
4097 | ||
4098 | return 0; | |
4099 | #else | |
4100 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse private key."); | |
4101 | #endif | |
4102 | } | |
4103 | ||
e594a3b1 LP |
4104 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
4105 | struct { | |
4106 | sd_id128_t type_uuid; | |
4107 | uint64_t counter; | |
695cfd53 | 4108 | } _packed_ plaintext = {}; |
e594a3b1 | 4109 | union { |
ade99252 | 4110 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
4111 | sd_id128_t id; |
4112 | } result; | |
4113 | ||
4114 | uint64_t k = 0; | |
e594a3b1 LP |
4115 | int r; |
4116 | ||
4117 | assert(context); | |
4118 | assert(p); | |
4119 | assert(ret); | |
4120 | ||
4121 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
4122 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
4123 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
4124 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
4125 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
4126 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
4127 | * second and later partition of the same type) if we have more than one partition of the same | |
4128 | * time. Or in other words: | |
4129 | * | |
4130 | * With: | |
4131 | * SEED := /etc/machine-id | |
4132 | * | |
4133 | * If first partition instance of type TYPE_UUID: | |
4134 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
4135 | * | |
4136 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
4137 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
4138 | */ | |
4139 | ||
4140 | LIST_FOREACH(partitions, q, context->partitions) { | |
4141 | if (p == q) | |
4142 | break; | |
4143 | ||
22e932f4 | 4144 | if (!sd_id128_equal(p->type.uuid, q->type.uuid)) |
e594a3b1 LP |
4145 | continue; |
4146 | ||
4147 | k++; | |
4148 | } | |
4149 | ||
22e932f4 | 4150 | plaintext.type_uuid = p->type.uuid; |
e594a3b1 LP |
4151 | plaintext.counter = htole64(k); |
4152 | ||
ade99252 KK |
4153 | hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes), |
4154 | &plaintext, | |
4155 | k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
4156 | result.md); | |
e594a3b1 LP |
4157 | |
4158 | /* Take the first half, mark it as v4 UUID */ | |
4159 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
4160 | result.id = id128_make_v4_uuid(result.id); | |
4161 | ||
4162 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
4163 | LIST_FOREACH(partitions, q, context->partitions) { | |
4164 | if (p == q) | |
4165 | continue; | |
4166 | ||
580f48cc | 4167 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 4168 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
4169 | |
4170 | r = sd_id128_randomize(&result.id); | |
4171 | if (r < 0) | |
4172 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
4173 | ||
4174 | break; | |
4175 | } | |
4176 | } | |
4177 | ||
4178 | *ret = result.id; | |
4179 | return 0; | |
4180 | } | |
4181 | ||
4182 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
4183 | _cleanup_free_ char *label = NULL; | |
4184 | const char *prefix; | |
4185 | unsigned k = 1; | |
4186 | ||
4187 | assert(context); | |
4188 | assert(p); | |
4189 | assert(ret); | |
4190 | ||
22e932f4 | 4191 | prefix = gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
4192 | if (!prefix) |
4193 | prefix = "linux"; | |
4194 | ||
4195 | for (;;) { | |
4196 | const char *ll = label ?: prefix; | |
4197 | bool retry = false; | |
e594a3b1 LP |
4198 | |
4199 | LIST_FOREACH(partitions, q, context->partitions) { | |
4200 | if (p == q) | |
4201 | break; | |
4202 | ||
4203 | if (streq_ptr(ll, q->current_label) || | |
4204 | streq_ptr(ll, q->new_label)) { | |
4205 | retry = true; | |
4206 | break; | |
4207 | } | |
4208 | } | |
4209 | ||
4210 | if (!retry) | |
4211 | break; | |
4212 | ||
4213 | label = mfree(label); | |
e594a3b1 LP |
4214 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
4215 | return log_oom(); | |
4216 | } | |
4217 | ||
4218 | if (!label) { | |
4219 | label = strdup(prefix); | |
4220 | if (!label) | |
4221 | return log_oom(); | |
4222 | } | |
4223 | ||
4224 | *ret = TAKE_PTR(label); | |
4225 | return 0; | |
4226 | } | |
4227 | ||
4228 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
e594a3b1 LP |
4229 | int r; |
4230 | ||
4231 | assert(context); | |
4232 | ||
4233 | LIST_FOREACH(partitions, p, context->partitions) { | |
e594a3b1 LP |
4234 | /* Never touch foreign partitions */ |
4235 | if (PARTITION_IS_FOREIGN(p)) { | |
4236 | p->new_uuid = p->current_uuid; | |
4237 | ||
4238 | if (p->current_label) { | |
78eee6ce LP |
4239 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
4240 | if (r < 0) | |
4241 | return r; | |
e594a3b1 LP |
4242 | } |
4243 | ||
4244 | continue; | |
4245 | } | |
4246 | ||
4247 | if (!sd_id128_is_null(p->current_uuid)) | |
4248 | p->new_uuid = p->current_uuid; /* Never change initialized UUIDs */ | |
b456191d | 4249 | else if (!p->new_uuid_is_set && !IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) { |
12963533 | 4250 | /* Not explicitly set by user! */ |
e594a3b1 LP |
4251 | r = partition_acquire_uuid(context, p, &p->new_uuid); |
4252 | if (r < 0) | |
4253 | return r; | |
11749b61 DDM |
4254 | |
4255 | p->new_uuid_is_set = true; | |
e594a3b1 LP |
4256 | } |
4257 | ||
8bbbdfd7 DDM |
4258 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", |
4259 | * keyed off the partition UUID. */ | |
4260 | r = derive_uuid(p->new_uuid, "file-system-uuid", &p->fs_uuid); | |
4261 | if (r < 0) | |
4262 | return r; | |
4263 | ||
e594a3b1 | 4264 | if (!isempty(p->current_label)) { |
78eee6ce LP |
4265 | /* never change initialized labels */ |
4266 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
4267 | if (r < 0) | |
4268 | return r; | |
12963533 TH |
4269 | } else if (!p->new_label) { |
4270 | /* Not explicitly set by user! */ | |
4271 | ||
e594a3b1 LP |
4272 | r = partition_acquire_label(context, p, &p->new_label); |
4273 | if (r < 0) | |
4274 | return r; | |
4275 | } | |
4276 | } | |
4277 | ||
4278 | return 0; | |
4279 | } | |
4280 | ||
e73309c5 LP |
4281 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
4282 | _cleanup_free_ char *a = NULL; | |
4283 | ||
4284 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
4285 | uint64_t bit = UINT64_C(1) << i; | |
4286 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
4287 | ||
4288 | if (!FLAGS_SET(flags, bit)) | |
4289 | continue; | |
4290 | ||
4291 | xsprintf(buf, "%u", i); | |
4292 | if (!strextend_with_separator(&a, ",", buf)) | |
4293 | return -ENOMEM; | |
4294 | } | |
4295 | ||
4296 | return fdisk_partition_set_attrs(q, a); | |
4297 | } | |
4298 | ||
1c41c1dc LP |
4299 | static uint64_t partition_merge_flags(Partition *p) { |
4300 | uint64_t f; | |
4301 | ||
4302 | assert(p); | |
4303 | ||
4304 | f = p->gpt_flags; | |
4305 | ||
ff0771bf | 4306 | if (p->no_auto >= 0) { |
22e932f4 | 4307 | if (gpt_partition_type_knows_no_auto(p->type)) |
92e72028 | 4308 | SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto); |
ff0771bf | 4309 | else { |
b7416360 | 4310 | char buffer[SD_ID128_UUID_STRING_MAX]; |
ff0771bf LP |
4311 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", |
4312 | yes_no(p->no_auto), | |
22e932f4 | 4313 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
ff0771bf LP |
4314 | } |
4315 | } | |
4316 | ||
1c41c1dc | 4317 | if (p->read_only >= 0) { |
22e932f4 | 4318 | if (gpt_partition_type_knows_read_only(p->type)) |
92e72028 | 4319 | SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only); |
1c41c1dc | 4320 | else { |
b7416360 | 4321 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4322 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", |
4323 | yes_no(p->read_only), | |
22e932f4 | 4324 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4325 | } |
4326 | } | |
4327 | ||
4328 | if (p->growfs >= 0) { | |
22e932f4 | 4329 | if (gpt_partition_type_knows_growfs(p->type)) |
92e72028 | 4330 | SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs); |
1c41c1dc | 4331 | else { |
b7416360 | 4332 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4333 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", |
4334 | yes_no(p->growfs), | |
22e932f4 | 4335 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4336 | } |
4337 | } | |
4338 | ||
4339 | return f; | |
4340 | } | |
4341 | ||
f28d4f42 | 4342 | static int context_mangle_partitions(Context *context) { |
f28d4f42 | 4343 | int r; |
e594a3b1 LP |
4344 | |
4345 | assert(context); | |
4346 | ||
e594a3b1 LP |
4347 | LIST_FOREACH(partitions, p, context->partitions) { |
4348 | if (p->dropped) | |
4349 | continue; | |
4350 | ||
81d1098b DDM |
4351 | if (partition_skip(p)) |
4352 | continue; | |
4353 | ||
e594a3b1 LP |
4354 | assert(p->new_size != UINT64_MAX); |
4355 | assert(p->offset != UINT64_MAX); | |
4356 | assert(p->partno != UINT64_MAX); | |
4357 | ||
4358 | if (PARTITION_EXISTS(p)) { | |
4359 | bool changed = false; | |
4360 | ||
4361 | assert(p->current_partition); | |
4362 | ||
4363 | if (p->new_size != p->current_size) { | |
4364 | assert(p->new_size >= p->current_size); | |
994b3031 | 4365 | assert(p->new_size % context->sector_size == 0); |
e594a3b1 LP |
4366 | |
4367 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
4368 | if (r < 0) | |
4369 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4370 | ||
994b3031 | 4371 | r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size); |
e594a3b1 LP |
4372 | if (r < 0) |
4373 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4374 | ||
4375 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
4376 | changed = true; | |
4377 | } | |
4378 | ||
4379 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
b7416360 | 4380 | r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4381 | if (r < 0) |
4382 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4383 | ||
4384 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
4385 | changed = true; | |
4386 | } | |
4387 | ||
4388 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 4389 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
4390 | if (r < 0) |
4391 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4392 | ||
4393 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
4394 | changed = true; | |
4395 | } | |
4396 | ||
4397 | if (changed) { | |
4398 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
4399 | ||
4400 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
4401 | if (r < 0) | |
4402 | return log_error_errno(r, "Failed to update partition: %m"); | |
4403 | } | |
4404 | } else { | |
4405 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
4406 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
e594a3b1 LP |
4407 | |
4408 | assert(!p->new_partition); | |
994b3031 LP |
4409 | assert(p->offset % context->sector_size == 0); |
4410 | assert(p->new_size % context->sector_size == 0); | |
be9ce018 | 4411 | assert(p->new_label); |
e594a3b1 LP |
4412 | |
4413 | t = fdisk_new_parttype(); | |
4414 | if (!t) | |
4415 | return log_oom(); | |
4416 | ||
22e932f4 | 4417 | r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type.uuid)); |
e594a3b1 LP |
4418 | if (r < 0) |
4419 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
4420 | ||
4421 | q = fdisk_new_partition(); | |
4422 | if (!q) | |
4423 | return log_oom(); | |
4424 | ||
4425 | r = fdisk_partition_set_type(q, t); | |
4426 | if (r < 0) | |
4427 | return log_error_errno(r, "Failed to set partition type: %m"); | |
4428 | ||
4429 | r = fdisk_partition_size_explicit(q, true); | |
4430 | if (r < 0) | |
4431 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4432 | ||
994b3031 | 4433 | r = fdisk_partition_set_start(q, p->offset / context->sector_size); |
e594a3b1 LP |
4434 | if (r < 0) |
4435 | return log_error_errno(r, "Failed to position partition: %m"); | |
4436 | ||
994b3031 | 4437 | r = fdisk_partition_set_size(q, p->new_size / context->sector_size); |
e594a3b1 LP |
4438 | if (r < 0) |
4439 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4440 | ||
4441 | r = fdisk_partition_set_partno(q, p->partno); | |
4442 | if (r < 0) | |
4443 | return log_error_errno(r, "Failed to set partition number: %m"); | |
4444 | ||
b7416360 | 4445 | r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4446 | if (r < 0) |
4447 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4448 | ||
be9ce018 | 4449 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
4450 | if (r < 0) |
4451 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4452 | ||
ff0771bf | 4453 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 4454 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
4455 | if (r < 0) |
4456 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
4457 | ||
5b5109e2 | 4458 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
4459 | |
4460 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
4461 | if (r < 0) | |
4462 | return log_error_errno(r, "Failed to add partition: %m"); | |
4463 | ||
4464 | assert(!p->new_partition); | |
4465 | p->new_partition = TAKE_PTR(q); | |
4466 | } | |
4467 | } | |
4468 | ||
f28d4f42 LP |
4469 | return 0; |
4470 | } | |
4471 | ||
4cee8333 DDM |
4472 | static int split_name_printf(Partition *p) { |
4473 | assert(p); | |
4474 | ||
4475 | const Specifier table[] = { | |
22e932f4 DDM |
4476 | { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type.uuid) }, |
4477 | { 'T', specifier_id128, &p->type.uuid }, | |
4cee8333 DDM |
4478 | { 'U', specifier_id128, &p->new_uuid }, |
4479 | { 'n', specifier_uint64, &p->partno }, | |
4480 | ||
4481 | COMMON_SYSTEM_SPECIFIERS, | |
4482 | {} | |
4483 | }; | |
4484 | ||
4485 | return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, &p->split_name_resolved); | |
4486 | } | |
4487 | ||
4488 | static int split_name_resolve(Context *context) { | |
4489 | int r; | |
4490 | ||
4491 | LIST_FOREACH(partitions, p, context->partitions) { | |
4492 | if (p->dropped) | |
4493 | continue; | |
4494 | ||
4495 | if (!p->split_name_format) | |
4496 | continue; | |
4497 | ||
4498 | r = split_name_printf(p); | |
4499 | if (r < 0) | |
4500 | return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format); | |
4501 | } | |
4502 | ||
4503 | LIST_FOREACH(partitions, p, context->partitions) { | |
4504 | if (!p->split_name_resolved) | |
4505 | continue; | |
4506 | ||
4507 | LIST_FOREACH(partitions, q, context->partitions) { | |
4508 | if (p == q) | |
4509 | continue; | |
4510 | ||
4511 | if (!q->split_name_resolved) | |
4512 | continue; | |
4513 | ||
4514 | if (!streq(p->split_name_resolved, q->split_name_resolved)) | |
4515 | continue; | |
4516 | ||
4517 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
4518 | "%s and %s have the same resolved split name \"%s\", refusing", | |
4519 | p->definition_path, q->definition_path, p->split_name_resolved); | |
4520 | } | |
4521 | } | |
4522 | ||
4523 | return 0; | |
4524 | } | |
4525 | ||
4526 | static int split_node(const char *node, char **ret_base, char **ret_ext) { | |
4527 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
4528 | char *e; | |
4529 | int r; | |
4530 | ||
4531 | assert(node); | |
4532 | assert(ret_base); | |
4533 | assert(ret_ext); | |
4534 | ||
4535 | r = path_extract_filename(node, &base); | |
4536 | if (r == O_DIRECTORY || r == -EADDRNOTAVAIL) | |
4537 | return log_error_errno(r, "Device node %s cannot be a directory", arg_node); | |
4538 | if (r < 0) | |
4539 | return log_error_errno(r, "Failed to extract filename from %s: %m", arg_node); | |
4540 | ||
4541 | e = endswith(base, ".raw"); | |
4542 | if (e) { | |
4543 | ext = strdup(e); | |
4544 | if (!ext) | |
4545 | return log_oom(); | |
4546 | ||
4547 | *e = 0; | |
4548 | } | |
4549 | ||
4550 | *ret_base = TAKE_PTR(base); | |
4551 | *ret_ext = TAKE_PTR(ext); | |
4552 | ||
4553 | return 0; | |
4554 | } | |
4555 | ||
4556 | static int context_split(Context *context) { | |
4557 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
4558 | _cleanup_close_ int dir_fd = -1; | |
4559 | int fd = -1, r; | |
4560 | ||
4561 | if (!arg_split) | |
4562 | return 0; | |
4563 | ||
4564 | assert(context); | |
4565 | assert(arg_node); | |
4566 | ||
4567 | /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled | |
4568 | * in after they've been generated. */ | |
4569 | ||
4570 | r = split_name_resolve(context); | |
4571 | if (r < 0) | |
4572 | return r; | |
4573 | ||
4574 | r = split_node(arg_node, &base, &ext); | |
4575 | if (r < 0) | |
4576 | return r; | |
4577 | ||
4578 | dir_fd = r = open_parent(arg_node, O_PATH|O_CLOEXEC, 0); | |
4579 | if (r == -EDESTADDRREQ) | |
4580 | dir_fd = AT_FDCWD; | |
4581 | else if (r < 0) | |
4582 | return log_error_errno(r, "Failed to open parent directory of %s: %m", arg_node); | |
4583 | ||
4584 | LIST_FOREACH(partitions, p, context->partitions) { | |
4585 | _cleanup_free_ char *fname = NULL; | |
4586 | _cleanup_close_ int fdt = -1; | |
4587 | ||
4588 | if (p->dropped) | |
4589 | continue; | |
4590 | ||
4591 | if (!p->split_name_resolved) | |
4592 | continue; | |
4593 | ||
81d1098b DDM |
4594 | if (partition_skip(p)) |
4595 | continue; | |
4596 | ||
4cee8333 DDM |
4597 | fname = strjoin(base, ".", p->split_name_resolved, ext); |
4598 | if (!fname) | |
4599 | return log_oom(); | |
4600 | ||
4601 | fdt = openat(dir_fd, fname, O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL, 0666); | |
4602 | if (fdt < 0) | |
4603 | return log_error_errno(errno, "Failed to open %s: %m", fname); | |
4604 | ||
4605 | if (fd < 0) | |
4606 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
4607 | ||
4608 | if (lseek(fd, p->offset, SEEK_SET) < 0) | |
4609 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
4610 | ||
a673b056 | 4611 | r = copy_bytes(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES); |
4cee8333 DDM |
4612 | if (r < 0) |
4613 | return log_error_errno(r, "Failed to copy to split partition %s: %m", fname); | |
4614 | } | |
4615 | ||
4616 | return 0; | |
4617 | } | |
4618 | ||
f28d4f42 LP |
4619 | static int context_write_partition_table( |
4620 | Context *context, | |
4621 | const char *node, | |
4622 | bool from_scratch) { | |
4623 | ||
4624 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; | |
4625 | int capable, r; | |
4626 | ||
4627 | assert(context); | |
4628 | ||
f28d4f42 LP |
4629 | if (!from_scratch && !context_changed(context)) { |
4630 | log_info("No changes."); | |
4631 | return 0; | |
4632 | } | |
4633 | ||
4634 | if (arg_dry_run) { | |
4635 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
4636 | return 0; | |
4637 | } | |
4638 | ||
4639 | log_info("Applying changes."); | |
4640 | ||
4641 | if (from_scratch) { | |
81873a6b LP |
4642 | r = context_wipe_range(context, 0, context->total); |
4643 | if (r < 0) | |
4644 | return r; | |
4645 | ||
4646 | log_info("Wiped block device."); | |
4647 | ||
0dce448b LB |
4648 | if (arg_discard) { |
4649 | r = context_discard_range(context, 0, context->total); | |
4650 | if (r == -EOPNOTSUPP) | |
4651 | log_info("Storage does not support discard, not discarding entire block device data."); | |
4652 | else if (r < 0) | |
4653 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
4654 | else if (r > 0) | |
4655 | log_info("Discarded entire block device."); | |
4656 | } | |
f28d4f42 LP |
4657 | } |
4658 | ||
4659 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
4660 | if (r < 0) | |
4661 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
4662 | ||
4663 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
4664 | * gaps between partitions, just to be sure. */ | |
4665 | r = context_wipe_and_discard(context, from_scratch); | |
4666 | if (r < 0) | |
4667 | return r; | |
4668 | ||
4669 | r = context_copy_blocks(context); | |
4670 | if (r < 0) | |
4671 | return r; | |
4672 | ||
4673 | r = context_mkfs(context); | |
4674 | if (r < 0) | |
4675 | return r; | |
4676 | ||
4677 | r = context_mangle_partitions(context); | |
4678 | if (r < 0) | |
4679 | return r; | |
4680 | ||
e594a3b1 LP |
4681 | log_info("Writing new partition table."); |
4682 | ||
4683 | r = fdisk_write_disklabel(context->fdisk_context); | |
4684 | if (r < 0) | |
4685 | return log_error_errno(r, "Failed to write partition table: %m"); | |
4686 | ||
911ba624 | 4687 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
4688 | if (capable == -ENOTBLK) |
4689 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
4690 | else if (capable < 0) | |
911ba624 | 4691 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 4692 | else if (capable > 0) { |
e594a3b1 LP |
4693 | log_info("Telling kernel to reread partition table."); |
4694 | ||
4695 | if (from_scratch) | |
4696 | r = fdisk_reread_partition_table(context->fdisk_context); | |
4697 | else | |
4698 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
4699 | if (r < 0) | |
4700 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
4701 | } else | |
4702 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
4703 | ||
4704 | log_info("All done."); | |
4705 | ||
4706 | return 0; | |
4707 | } | |
4708 | ||
4709 | static int context_read_seed(Context *context, const char *root) { | |
4710 | int r; | |
4711 | ||
4712 | assert(context); | |
4713 | ||
4714 | if (!sd_id128_is_null(context->seed)) | |
4715 | return 0; | |
4716 | ||
4717 | if (!arg_randomize) { | |
4718 | _cleanup_close_ int fd = -1; | |
4719 | ||
4720 | fd = chase_symlinks_and_open("/etc/machine-id", root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC, NULL); | |
4721 | if (fd == -ENOENT) | |
4722 | log_info("No machine ID set, using randomized partition UUIDs."); | |
4723 | else if (fd < 0) | |
4724 | return log_error_errno(fd, "Failed to determine machine ID of image: %m"); | |
4725 | else { | |
448b782c | 4726 | r = id128_read_fd(fd, ID128_PLAIN_OR_UNINIT, &context->seed); |
e594a3b1 LP |
4727 | if (r == -ENOMEDIUM) |
4728 | log_info("No machine ID set, using randomized partition UUIDs."); | |
4729 | else if (r < 0) | |
4730 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
4731 | ||
4732 | return 0; | |
4733 | } | |
4734 | } | |
4735 | ||
4736 | r = sd_id128_randomize(&context->seed); | |
4737 | if (r < 0) | |
4738 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
4739 | ||
4740 | return 0; | |
4741 | } | |
4742 | ||
4743 | static int context_factory_reset(Context *context, bool from_scratch) { | |
e594a3b1 LP |
4744 | size_t n = 0; |
4745 | int r; | |
4746 | ||
4747 | assert(context); | |
4748 | ||
4749 | if (arg_factory_reset <= 0) | |
4750 | return 0; | |
4751 | ||
4752 | if (from_scratch) /* Nothing to reset if we start from scratch */ | |
4753 | return 0; | |
4754 | ||
4755 | if (arg_dry_run) { | |
4756 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
4757 | return 0; | |
4758 | } | |
4759 | ||
4760 | log_info("Applying factory reset."); | |
4761 | ||
4762 | LIST_FOREACH(partitions, p, context->partitions) { | |
4763 | ||
4764 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
4765 | continue; | |
4766 | ||
4767 | assert(p->partno != UINT64_MAX); | |
4768 | ||
4769 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
4770 | ||
4771 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
4772 | if (r < 0) | |
4773 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
4774 | ||
4775 | n++; | |
4776 | } | |
4777 | ||
4778 | if (n == 0) { | |
4779 | log_info("Factory reset requested, but no partitions to delete found."); | |
4780 | return 0; | |
4781 | } | |
4782 | ||
4783 | r = fdisk_write_disklabel(context->fdisk_context); | |
4784 | if (r < 0) | |
4785 | return log_error_errno(r, "Failed to write disk label: %m"); | |
4786 | ||
4787 | log_info("Successfully deleted %zu partitions.", n); | |
4788 | return 1; | |
4789 | } | |
4790 | ||
4791 | static int context_can_factory_reset(Context *context) { | |
e594a3b1 LP |
4792 | assert(context); |
4793 | ||
4794 | LIST_FOREACH(partitions, p, context->partitions) | |
4795 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
4796 | return true; | |
4797 | ||
4798 | return false; | |
4799 | } | |
4800 | ||
5c08da58 LP |
4801 | static int resolve_copy_blocks_auto_candidate( |
4802 | dev_t partition_devno, | |
22e932f4 | 4803 | GptPartitionType partition_type, |
5c08da58 LP |
4804 | dev_t restrict_devno, |
4805 | sd_id128_t *ret_uuid) { | |
4806 | ||
4807 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
5c08da58 | 4808 | _cleanup_close_ int fd = -1; |
ca822829 YW |
4809 | _cleanup_free_ char *p = NULL; |
4810 | const char *pttype, *t; | |
5c08da58 LP |
4811 | sd_id128_t pt_parsed, u; |
4812 | blkid_partition pp; | |
4813 | dev_t whole_devno; | |
4814 | blkid_partlist pl; | |
5c08da58 LP |
4815 | int r; |
4816 | ||
4817 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
4818 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
4819 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
4820 | * one of the two. */ | |
4821 | ||
4822 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
4823 | if (r < 0) | |
4824 | return log_error_errno( | |
4825 | r, | |
4826 | "Unable to determine containing block device of partition %u:%u: %m", | |
4827 | major(partition_devno), minor(partition_devno)); | |
4828 | ||
4829 | if (restrict_devno != (dev_t) -1 && | |
4830 | restrict_devno != whole_devno) | |
4831 | return log_error_errno( | |
4832 | SYNTHETIC_ERRNO(EPERM), | |
4833 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
4834 | major(partition_devno), minor(partition_devno), | |
4835 | major(restrict_devno), minor(restrict_devno)); | |
4836 | ||
ca822829 | 4837 | fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p); |
5c08da58 | 4838 | if (r < 0) |
ca822829 YW |
4839 | return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m", |
4840 | DEVNUM_FORMAT_VAL(whole_devno)); | |
5c08da58 LP |
4841 | |
4842 | b = blkid_new_probe(); | |
4843 | if (!b) | |
4844 | return log_oom(); | |
4845 | ||
4846 | errno = 0; | |
4847 | r = blkid_probe_set_device(b, fd, 0, 0); | |
4848 | if (r != 0) | |
4849 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
4850 | ||
4851 | (void) blkid_probe_enable_partitions(b, 1); | |
4852 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
4853 | ||
4854 | errno = 0; | |
4855 | r = blkid_do_safeprobe(b); | |
4856 | if (IN_SET(r, -2, 1)) { /* nothing found or ambiguous result */ | |
4857 | log_debug("Didn't find partition table on block device '%s'.", p); | |
4858 | return false; | |
4859 | } | |
4860 | if (r != 0) | |
4861 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
4862 | ||
4863 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
4864 | if (!streq_ptr(pttype, "gpt")) { | |
4865 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
4866 | return false; | |
4867 | } | |
4868 | ||
4869 | errno = 0; | |
4870 | pl = blkid_probe_get_partitions(b); | |
4871 | if (!pl) | |
4872 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
4873 | errno = 0; | |
4874 | ||
4875 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
4876 | if (!pp) { | |
4877 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
4878 | major(partition_devno), minor(partition_devno), p); | |
4879 | return false; | |
4880 | } | |
4881 | ||
4882 | t = blkid_partition_get_type_string(pp); | |
4883 | if (isempty(t)) { | |
4884 | log_debug("Partition %u:%u has no type on '%s'.", | |
4885 | major(partition_devno), minor(partition_devno), p); | |
4886 | return false; | |
4887 | } | |
4888 | ||
4889 | r = sd_id128_from_string(t, &pt_parsed); | |
4890 | if (r < 0) { | |
4891 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
4892 | return false; | |
4893 | } | |
4894 | ||
22e932f4 | 4895 | if (!sd_id128_equal(pt_parsed, partition_type.uuid)) { |
5c08da58 LP |
4896 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", |
4897 | major(partition_devno), minor(partition_devno), | |
22e932f4 | 4898 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type.uuid)); |
5c08da58 LP |
4899 | return false; |
4900 | } | |
4901 | ||
4902 | t = blkid_partition_get_uuid(pp); | |
4903 | if (isempty(t)) { | |
4904 | log_debug("Partition %u:%u has no UUID.", | |
4905 | major(partition_devno), minor(partition_devno)); | |
4906 | return false; | |
4907 | } | |
4908 | ||
4909 | r = sd_id128_from_string(t, &u); | |
4910 | if (r < 0) { | |
4911 | log_debug_errno(r, "Failed to parse partition UUID \"%s\": %m", t); | |
4912 | return false; | |
4913 | } | |
4914 | ||
4915 | log_debug("Automatically found partition %u:%u of right type " SD_ID128_FORMAT_STR ".", | |
4916 | major(partition_devno), minor(partition_devno), | |
4917 | SD_ID128_FORMAT_VAL(pt_parsed)); | |
4918 | ||
4919 | if (ret_uuid) | |
4920 | *ret_uuid = u; | |
4921 | ||
4922 | return true; | |
4923 | } | |
4924 | ||
4925 | static int find_backing_devno( | |
4926 | const char *path, | |
4927 | const char *root, | |
4928 | dev_t *ret) { | |
4929 | ||
4930 | _cleanup_free_ char *resolved = NULL; | |
4931 | int r; | |
4932 | ||
4933 | assert(path); | |
4934 | ||
4935 | r = chase_symlinks(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); | |
4936 | if (r < 0) | |
4937 | return r; | |
4938 | ||
4939 | r = path_is_mount_point(resolved, NULL, 0); | |
4940 | if (r < 0) | |
4941 | return r; | |
4942 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
4943 | return -ENOENT; | |
4944 | ||
4945 | r = get_block_device(resolved, ret); | |
4946 | if (r < 0) | |
4947 | return r; | |
4948 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
4949 | return -ENOENT; | |
4950 | ||
4951 | return 0; | |
4952 | } | |
4953 | ||
4954 | static int resolve_copy_blocks_auto( | |
22e932f4 | 4955 | GptPartitionType type, |
5c08da58 LP |
4956 | const char *root, |
4957 | dev_t restrict_devno, | |
1a037ba2 | 4958 | dev_t *ret_devno, |
5c08da58 LP |
4959 | sd_id128_t *ret_uuid) { |
4960 | ||
4961 | const char *try1 = NULL, *try2 = NULL; | |
4962 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
4963 | _cleanup_(closedirp) DIR *d = NULL; | |
4964 | sd_id128_t found_uuid = SD_ID128_NULL; | |
4965 | dev_t devno, found = 0; | |
4966 | int r; | |
4967 | ||
5c08da58 LP |
4968 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the |
4969 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
4970 | * and restrict block device references in the --image= case to loopback block device we set up. | |
4971 | * | |
4972 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
4973 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
4974 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
4975 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
4976 | ||
4977 | if (restrict_devno == 0) | |
4978 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
4979 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
4980 | ||
4981 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching | |
4982 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
4983 | * type matches. */ | |
4984 | ||
22e932f4 | 4985 | if (type.designator == PARTITION_ROOT) |
5c08da58 | 4986 | try1 = "/"; |
22e932f4 | 4987 | else if (type.designator == PARTITION_USR) |
5c08da58 | 4988 | try1 = "/usr/"; |
22e932f4 | 4989 | else if (type.designator == PARTITION_ROOT_VERITY) |
5c08da58 | 4990 | try1 = "/"; |
22e932f4 | 4991 | else if (type.designator == PARTITION_USR_VERITY) |
5c08da58 | 4992 | try1 = "/usr/"; |
22e932f4 | 4993 | else if (type.designator == PARTITION_ESP) { |
5c08da58 LP |
4994 | try1 = "/efi/"; |
4995 | try2 = "/boot/"; | |
22e932f4 | 4996 | } else if (type.designator == PARTITION_XBOOTLDR) |
5c08da58 LP |
4997 | try1 = "/boot/"; |
4998 | else | |
4999 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
5000 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
22e932f4 | 5001 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5002 | |
5003 | r = find_backing_devno(try1, root, &devno); | |
5004 | if (r == -ENOENT && try2) | |
5005 | r = find_backing_devno(try2, root, &devno); | |
5006 | if (r < 0) | |
5007 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
22e932f4 | 5008 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5009 | |
5010 | xsprintf_sys_block_path(p, "/slaves", devno); | |
5011 | d = opendir(p); | |
5012 | if (d) { | |
5013 | struct dirent *de; | |
5014 | ||
5015 | for (;;) { | |
5016 | _cleanup_free_ char *q = NULL, *t = NULL; | |
5017 | sd_id128_t u; | |
5018 | dev_t sl; | |
5019 | ||
5020 | errno = 0; | |
5021 | de = readdir_no_dot(d); | |
5022 | if (!de) { | |
5023 | if (errno != 0) | |
5024 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
5025 | ||
5026 | break; | |
5027 | } | |
5028 | ||
5029 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
5030 | continue; | |
5031 | ||
5032 | q = path_join(p, de->d_name, "/dev"); | |
5033 | if (!q) | |
5034 | return log_oom(); | |
5035 | ||
5036 | r = read_one_line_file(q, &t); | |
5037 | if (r < 0) | |
5038 | return log_error_errno(r, "Failed to read %s: %m", q); | |
5039 | ||
7176f06c | 5040 | r = parse_devnum(t, &sl); |
5c08da58 LP |
5041 | if (r < 0) { |
5042 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
5043 | continue; | |
5044 | } | |
5045 | if (major(sl) == 0) { | |
5046 | log_debug_errno(r, "Device backing %s is special, ignoring: %m", q); | |
5047 | continue; | |
5048 | } | |
5049 | ||
22e932f4 | 5050 | r = resolve_copy_blocks_auto_candidate(sl, type, restrict_devno, &u); |
5c08da58 LP |
5051 | if (r < 0) |
5052 | return r; | |
5053 | if (r > 0) { | |
5054 | /* We found a matching one! */ | |
5055 | if (found != 0) | |
5056 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
5057 | "Multiple matching partitions found, refusing."); | |
5058 | ||
5059 | found = sl; | |
5060 | found_uuid = u; | |
5061 | } | |
5062 | } | |
5063 | } else if (errno != ENOENT) | |
5064 | return log_error_errno(errno, "Failed open %s: %m", p); | |
5065 | else { | |
22e932f4 | 5066 | r = resolve_copy_blocks_auto_candidate(devno, type, restrict_devno, &found_uuid); |
5c08da58 LP |
5067 | if (r < 0) |
5068 | return r; | |
5069 | if (r > 0) | |
5070 | found = devno; | |
5071 | } | |
5072 | ||
5073 | if (found == 0) | |
5074 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
5075 | "Unable to automatically discover suitable partition to copy blocks from."); | |
5076 | ||
1a037ba2 YW |
5077 | if (ret_devno) |
5078 | *ret_devno = found; | |
5c08da58 LP |
5079 | |
5080 | if (ret_uuid) | |
5081 | *ret_uuid = found_uuid; | |
5082 | ||
5083 | return 0; | |
5084 | } | |
5085 | ||
5086 | static int context_open_copy_block_paths( | |
5087 | Context *context, | |
5c08da58 LP |
5088 | dev_t restrict_devno) { |
5089 | ||
757bc2e4 LP |
5090 | int r; |
5091 | ||
5092 | assert(context); | |
5093 | ||
5094 | LIST_FOREACH(partitions, p, context->partitions) { | |
5095 | _cleanup_close_ int source_fd = -1; | |
5c08da58 LP |
5096 | _cleanup_free_ char *opened = NULL; |
5097 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
5098 | uint64_t size; |
5099 | struct stat st; | |
5100 | ||
5101 | assert(p->copy_blocks_fd < 0); | |
5102 | assert(p->copy_blocks_size == UINT64_MAX); | |
5103 | ||
5104 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
5105 | continue; | |
5106 | ||
5c08da58 | 5107 | if (p->copy_blocks_path) { |
757bc2e4 | 5108 | |
585c5c75 | 5109 | 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 |
5110 | if (source_fd < 0) |
5111 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 5112 | |
5c08da58 LP |
5113 | if (fstat(source_fd, &st) < 0) |
5114 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
5115 | ||
5116 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
5117 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5118 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
5119 | ||
5120 | } else if (p->copy_blocks_auto) { | |
1a037ba2 | 5121 | dev_t devno; |
5c08da58 | 5122 | |
22e932f4 | 5123 | r = resolve_copy_blocks_auto(p->type, p->copy_blocks_root, restrict_devno, &devno, &uuid); |
5c08da58 LP |
5124 | if (r < 0) |
5125 | return r; | |
5126 | ||
ca822829 | 5127 | source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
1a037ba2 | 5128 | if (r < 0) |
ca822829 YW |
5129 | return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m", |
5130 | DEVNUM_FORMAT_VAL(devno)); | |
5c08da58 LP |
5131 | |
5132 | if (fstat(source_fd, &st) < 0) | |
5133 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
1a037ba2 | 5134 | } else |
5c08da58 | 5135 | continue; |
757bc2e4 LP |
5136 | |
5137 | if (S_ISDIR(st.st_mode)) { | |
ca822829 YW |
5138 | _cleanup_free_ char *bdev = NULL; |
5139 | dev_t devt; | |
757bc2e4 LP |
5140 | |
5141 | /* If the file is a directory, automatically find the backing block device */ | |
5142 | ||
5143 | if (major(st.st_dev) != 0) | |
ca822829 | 5144 | devt = st.st_dev; |
757bc2e4 | 5145 | else { |
757bc2e4 | 5146 | /* Special support for btrfs */ |
757bc2e4 | 5147 | r = btrfs_get_block_device_fd(source_fd, &devt); |
67f0ac8c | 5148 | if (r == -EUCLEAN) |
5c08da58 | 5149 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 5150 | if (r < 0) |
5c08da58 | 5151 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 | 5152 | } |
757bc2e4 LP |
5153 | |
5154 | safe_close(source_fd); | |
5155 | ||
ca822829 YW |
5156 | source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev); |
5157 | if (r < 0) | |
5158 | return log_error_errno(r, "Failed to open block device backing '%s': %m", opened); | |
757bc2e4 LP |
5159 | |
5160 | if (fstat(source_fd, &st) < 0) | |
5161 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
757bc2e4 LP |
5162 | } |
5163 | ||
5164 | if (S_ISREG(st.st_mode)) | |
5165 | size = st.st_size; | |
5166 | else if (S_ISBLK(st.st_mode)) { | |
5167 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
5168 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
5169 | } else | |
5c08da58 | 5170 | 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 |
5171 | |
5172 | if (size <= 0) | |
5c08da58 | 5173 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 5174 | if (size % 512 != 0) |
5c08da58 | 5175 | 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 |
5176 | |
5177 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
5178 | p->copy_blocks_size = size; | |
5c08da58 LP |
5179 | |
5180 | free_and_replace(p->copy_blocks_path, opened); | |
5181 | ||
5182 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
11749b61 | 5183 | if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) { |
5c08da58 | 5184 | p->new_uuid = uuid; |
11749b61 DDM |
5185 | p->new_uuid_is_set = true; |
5186 | } | |
757bc2e4 LP |
5187 | } |
5188 | ||
5189 | return 0; | |
5190 | } | |
5191 | ||
c4a87b76 DDM |
5192 | static int fd_apparent_size(int fd, uint64_t *ret) { |
5193 | off_t initial = 0; | |
5194 | uint64_t size = 0; | |
5195 | ||
5196 | assert(fd >= 0); | |
5197 | assert(ret); | |
5198 | ||
5199 | initial = lseek(fd, 0, SEEK_CUR); | |
5200 | if (initial < 0) | |
5201 | return log_error_errno(errno, "Failed to get file offset: %m"); | |
5202 | ||
5203 | for (off_t off = 0;;) { | |
5204 | off_t r; | |
5205 | ||
5206 | r = lseek(fd, off, SEEK_DATA); | |
5207 | if (r < 0 && errno == ENXIO) | |
5208 | /* If errno == ENXIO, that means we've reached the final hole of the file and | |
5209 | * that hole isn't followed by more data. */ | |
5210 | break; | |
5211 | if (r < 0) | |
5212 | return log_error_errno(errno, "Failed to seek data in file from offset %"PRIi64": %m", off); | |
5213 | ||
5214 | off = r; /* Set the offset to the start of the data segment. */ | |
5215 | ||
5216 | /* After copying a potential hole, find the end of the data segment by looking for | |
5217 | * the next hole. If we get ENXIO, we're at EOF. */ | |
5218 | r = lseek(fd, off, SEEK_HOLE); | |
5219 | if (r < 0) { | |
5220 | if (errno == ENXIO) | |
5221 | break; | |
5222 | return log_error_errno(errno, "Failed to seek hole in file from offset %"PRIi64": %m", off); | |
5223 | } | |
5224 | ||
5225 | size += r - off; | |
5226 | off = r; | |
5227 | } | |
5228 | ||
5229 | if (lseek(fd, initial, SEEK_SET) < 0) | |
5230 | return log_error_errno(errno, "Failed to reset file offset: %m"); | |
5231 | ||
5232 | *ret = size; | |
5233 | ||
5234 | return 0; | |
5235 | } | |
5236 | ||
5237 | static int context_minimize(Context *context) { | |
5238 | _cleanup_set_free_ Set *denylist = NULL; | |
5239 | const char *vt; | |
5240 | int r; | |
5241 | ||
5242 | assert(context); | |
5243 | ||
5244 | r = make_copy_files_denylist(context, &denylist); | |
5245 | if (r < 0) | |
5246 | return r; | |
5247 | ||
5248 | r = var_tmp_dir(&vt); | |
5249 | if (r < 0) | |
5250 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
5251 | ||
5252 | LIST_FOREACH(partitions, p, context->partitions) { | |
e59678b2 | 5253 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
c4a87b76 | 5254 | _cleanup_(unlink_and_freep) char *temp = NULL; |
d3201eb4 | 5255 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
c4a87b76 DDM |
5256 | _cleanup_close_ int fd = -1; |
5257 | sd_id128_t fs_uuid; | |
5258 | uint64_t fsz; | |
5259 | ||
5260 | if (p->dropped) | |
5261 | continue; | |
5262 | ||
5263 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
5264 | continue; | |
5265 | ||
5266 | if (!p->format) | |
5267 | continue; | |
5268 | ||
5269 | if (!p->minimize) | |
5270 | continue; | |
5271 | ||
d3201eb4 DDM |
5272 | if (!partition_needs_populate(p)) |
5273 | continue; | |
5274 | ||
c4a87b76 DDM |
5275 | assert(!p->copy_blocks_path); |
5276 | ||
5277 | r = tempfn_random_child(vt, "repart", &temp); | |
5278 | if (r < 0) | |
5279 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
5280 | ||
59e2be46 DDM |
5281 | if (fstype_is_ro(p->format)) |
5282 | fs_uuid = p->fs_uuid; | |
5283 | else { | |
c4a87b76 DDM |
5284 | fd = open(temp, O_CREAT|O_EXCL|O_CLOEXEC|O_RDWR|O_NOCTTY, 0600); |
5285 | if (fd < 0) | |
5286 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
5287 | ||
5288 | /* This may seem huge but it will be created sparse so it doesn't take up any space | |
d3201eb4 | 5289 | * on disk until written to. */ |
c4a87b76 DDM |
5290 | if (ftruncate(fd, 1024ULL * 1024ULL * 1024ULL * 1024ULL) < 0) |
5291 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
5292 | FORMAT_BYTES(1024ULL * 1024ULL * 1024ULL * 1024ULL)); | |
5293 | ||
d3201eb4 DDM |
5294 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, 0, 0, LOCK_EX, &d); |
5295 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
5296 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5297 | ||
c4a87b76 DDM |
5298 | /* We're going to populate this filesystem twice so use a random UUID the first time |
5299 | * to avoid UUID conflicts. */ | |
5300 | r = sd_id128_randomize(&fs_uuid); | |
5301 | if (r < 0) | |
5302 | return r; | |
59e2be46 DDM |
5303 | } |
5304 | ||
d3201eb4 DDM |
5305 | if (!d || fstype_is_ro(p->format)) { |
5306 | if (!mkfs_supports_root_option(p->format)) | |
5307 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
5308 | "Loop device access is required to populate %s filesystems", | |
5309 | p->format); | |
5310 | ||
e59678b2 | 5311 | r = partition_populate_directory(p, denylist, &root); |
c4a87b76 DDM |
5312 | if (r < 0) |
5313 | return r; | |
c4a87b76 DDM |
5314 | } |
5315 | ||
d3201eb4 | 5316 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, fs_uuid, arg_discard); |
c4a87b76 DDM |
5317 | if (r < 0) |
5318 | return r; | |
5319 | ||
5320 | /* Read-only filesystems are minimal from the first try because they create and size the | |
5321 | * loopback file for us. */ | |
5322 | if (fstype_is_ro(p->format)) { | |
5323 | p->copy_blocks_path = TAKE_PTR(temp); | |
5324 | continue; | |
5325 | } | |
5326 | ||
d3201eb4 DDM |
5327 | if (!root) { |
5328 | assert(d); | |
5329 | ||
5330 | r = partition_populate_filesystem(p, d->node, denylist); | |
59e2be46 DDM |
5331 | if (r < 0) |
5332 | return r; | |
5333 | } | |
c4a87b76 DDM |
5334 | |
5335 | /* Other filesystems need to be provided with a pre-sized loopback file and will adapt to | |
5336 | * fully occupy it. Because we gave the filesystem a 1T sparse file, we need to shrink the | |
5337 | * filesystem down to a reasonable size again to fit it in the disk image. While there are | |
5338 | * some filesystems that support shrinking, it doesn't always work properly (e.g. shrinking | |
5339 | * btrfs gives us a 2.0G filesystem regardless of what we put in it). Instead, let's populate | |
5340 | * the filesystem again, but this time, instead of providing the filesystem with a 1T sparse | |
5341 | * loopback file, let's size the loopback file based on the actual data used by the | |
5342 | * filesystem in the sparse file after the first attempt. This should be a good guess of the | |
5343 | * minimal amount of space needed in the filesystem to fit all the required data. | |
5344 | */ | |
5345 | r = fd_apparent_size(fd, &fsz); | |
5346 | if (r < 0) | |
5347 | return r; | |
5348 | ||
5349 | /* Massage the size a bit because just going by actual data used in the sparse file isn't | |
5350 | * fool-proof. */ | |
5351 | fsz = round_up_size(fsz + (fsz / 2), context->grain_size); | |
5352 | if (minimal_size_by_fs_name(p->format) != UINT64_MAX) | |
5353 | fsz = MAX(minimal_size_by_fs_name(p->format), fsz); | |
5354 | ||
d3201eb4 DDM |
5355 | d = loop_device_unref(d); |
5356 | ||
c4a87b76 DDM |
5357 | /* Erase the previous filesystem first. */ |
5358 | if (ftruncate(fd, 0)) | |
5359 | return log_error_errno(errno, "Failed to erase temporary file: %m"); | |
5360 | ||
5361 | if (ftruncate(fd, fsz)) | |
5362 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", FORMAT_BYTES(fsz)); | |
5363 | ||
d3201eb4 DDM |
5364 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, 0, 0, LOCK_EX, &d); |
5365 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
5366 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5367 | ||
5368 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, p->fs_uuid, arg_discard); | |
c4a87b76 DDM |
5369 | if (r < 0) |
5370 | return r; | |
5371 | ||
d3201eb4 DDM |
5372 | if (!root) { |
5373 | assert(d); | |
5374 | ||
5375 | r = partition_populate_filesystem(p, d->node, denylist); | |
59e2be46 DDM |
5376 | if (r < 0) |
5377 | return r; | |
5378 | } | |
c4a87b76 DDM |
5379 | |
5380 | p->copy_blocks_path = TAKE_PTR(temp); | |
5381 | } | |
5382 | ||
5383 | return 0; | |
5384 | } | |
5385 | ||
220780db | 5386 | static int parse_partition_types(const char *p, sd_id128_t **partitions, size_t *n_partitions) { |
81d1098b DDM |
5387 | int r; |
5388 | ||
220780db DDM |
5389 | assert(partitions); |
5390 | assert(n_partitions); | |
5391 | ||
81d1098b DDM |
5392 | for (;;) { |
5393 | _cleanup_free_ char *name = NULL; | |
5394 | GptPartitionType type; | |
5395 | ||
5396 | r = extract_first_word(&p, &name, ",", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
5397 | if (r == 0) | |
5398 | break; | |
5399 | if (r < 0) | |
766f52f2 | 5400 | return log_error_errno(r, "Failed to extract partition type identifier or GUID: %s", p); |
81d1098b DDM |
5401 | |
5402 | r = gpt_partition_type_from_string(name, &type); | |
5403 | if (r < 0) | |
766f52f2 | 5404 | return log_error_errno(r, "'%s' is not a valid partition type identifier or GUID", name); |
81d1098b | 5405 | |
220780db | 5406 | if (!GREEDY_REALLOC(*partitions, *n_partitions + 1)) |
81d1098b DDM |
5407 | return log_oom(); |
5408 | ||
220780db | 5409 | (*partitions)[(*n_partitions)++] = type.uuid; |
81d1098b DDM |
5410 | } |
5411 | ||
5412 | return 0; | |
5413 | } | |
5414 | ||
e594a3b1 LP |
5415 | static int help(void) { |
5416 | _cleanup_free_ char *link = NULL; | |
5417 | int r; | |
5418 | ||
5419 | r = terminal_urlify_man("systemd-repart", "1", &link); | |
5420 | if (r < 0) | |
5421 | return log_oom(); | |
5422 | ||
5423 | printf("%s [OPTIONS...] [DEVICE]\n" | |
5424 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
5425 | " -h --help Show this help\n" | |
5426 | " --version Show package version\n" | |
896e678b LP |
5427 | " --no-pager Do not pipe output into a pager\n" |
5428 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 5429 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
5430 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
5431 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 5432 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 5433 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
5434 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
5435 | " them\n" | |
5436 | " --can-factory-reset Test whether factory reset is defined\n" | |
5437 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 5438 | " --image=PATH Operate relative to image file\n" |
9d252fbb | 5439 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 5440 | " --key-file=PATH Key to use when encrypting partitions\n" |
b456191d DDM |
5441 | " --private-key=PATH Private key to use when generating verity roothash\n" |
5442 | " signatures\n" | |
5443 | " --certificate=PATH PEM certificate to use when generating verity\n" | |
5444 | " roothash signatures\n" | |
889914ef | 5445 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 5446 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 5447 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
02ef97cd LP |
5448 | " --tpm2-public-key=PATH\n" |
5449 | " Enroll signed TPM2 PCR policy against PEM public key\n" | |
5450 | " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n" | |
5451 | " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n" | |
e594a3b1 | 5452 | " --seed=UUID 128bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 5453 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 5454 | " --json=pretty|short|off\n" |
de8231b0 | 5455 | " Generate JSON output\n" |
4cee8333 | 5456 | " --split=BOOL Whether to generate split artifacts\n" |
81d1098b | 5457 | " --include-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 5458 | " Ignore partitions not of the specified types\n" |
81d1098b | 5459 | " --exclude-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 DDM |
5460 | " Ignore partitions of the specified types\n" |
5461 | " --skip-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" | |
5462 | " Take partitions of the specified types into account\n" | |
5463 | " but don't populate them yet\n" | |
bc556335 DDM |
5464 | "\nSee the %s for details.\n", |
5465 | program_invocation_short_name, | |
5466 | ansi_highlight(), | |
5467 | ansi_normal(), | |
5468 | link); | |
e594a3b1 LP |
5469 | |
5470 | return 0; | |
5471 | } | |
5472 | ||
5473 | static int parse_argv(int argc, char *argv[]) { | |
5474 | ||
5475 | enum { | |
5476 | ARG_VERSION = 0x100, | |
896e678b LP |
5477 | ARG_NO_PAGER, |
5478 | ARG_NO_LEGEND, | |
e594a3b1 LP |
5479 | ARG_DRY_RUN, |
5480 | ARG_EMPTY, | |
5481 | ARG_DISCARD, | |
5482 | ARG_FACTORY_RESET, | |
5483 | ARG_CAN_FACTORY_RESET, | |
5484 | ARG_ROOT, | |
252d6267 | 5485 | ARG_IMAGE, |
e594a3b1 LP |
5486 | ARG_SEED, |
5487 | ARG_PRETTY, | |
5488 | ARG_DEFINITIONS, | |
a26f4a49 | 5489 | ARG_SIZE, |
a015fbe7 | 5490 | ARG_JSON, |
b9df3536 | 5491 | ARG_KEY_FILE, |
b456191d DDM |
5492 | ARG_PRIVATE_KEY, |
5493 | ARG_CERTIFICATE, | |
889914ef LP |
5494 | ARG_TPM2_DEVICE, |
5495 | ARG_TPM2_PCRS, | |
02ef97cd LP |
5496 | ARG_TPM2_PUBLIC_KEY, |
5497 | ARG_TPM2_PUBLIC_KEY_PCRS, | |
4cee8333 | 5498 | ARG_SPLIT, |
81d1098b DDM |
5499 | ARG_INCLUDE_PARTITIONS, |
5500 | ARG_EXCLUDE_PARTITIONS, | |
7d505753 | 5501 | ARG_SKIP_PARTITIONS, |
e594a3b1 LP |
5502 | }; |
5503 | ||
5504 | static const struct option options[] = { | |
02ef97cd LP |
5505 | { "help", no_argument, NULL, 'h' }, |
5506 | { "version", no_argument, NULL, ARG_VERSION }, | |
5507 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
5508 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
5509 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, | |
5510 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
5511 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
5512 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
5513 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
5514 | { "root", required_argument, NULL, ARG_ROOT }, | |
5515 | { "image", required_argument, NULL, ARG_IMAGE }, | |
5516 | { "seed", required_argument, NULL, ARG_SEED }, | |
5517 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
5518 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
5519 | { "size", required_argument, NULL, ARG_SIZE }, | |
5520 | { "json", required_argument, NULL, ARG_JSON }, | |
5521 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, | |
b456191d DDM |
5522 | { "private-key", required_argument, NULL, ARG_PRIVATE_KEY }, |
5523 | { "certificate", required_argument, NULL, ARG_CERTIFICATE }, | |
02ef97cd LP |
5524 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
5525 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
5526 | { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY }, | |
5527 | { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS }, | |
4cee8333 | 5528 | { "split", required_argument, NULL, ARG_SPLIT }, |
81d1098b DDM |
5529 | { "include-partitions", required_argument, NULL, ARG_INCLUDE_PARTITIONS }, |
5530 | { "exclude-partitions", required_argument, NULL, ARG_EXCLUDE_PARTITIONS }, | |
7d505753 | 5531 | { "skip-partitions", required_argument, NULL, ARG_SKIP_PARTITIONS }, |
e594a3b1 LP |
5532 | {} |
5533 | }; | |
5534 | ||
a26f4a49 | 5535 | int c, r, dry_run = -1; |
e594a3b1 LP |
5536 | |
5537 | assert(argc >= 0); | |
5538 | assert(argv); | |
5539 | ||
5540 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
5541 | ||
5542 | switch (c) { | |
5543 | ||
5544 | case 'h': | |
5545 | return help(); | |
5546 | ||
5547 | case ARG_VERSION: | |
5548 | return version(); | |
5549 | ||
896e678b LP |
5550 | case ARG_NO_PAGER: |
5551 | arg_pager_flags |= PAGER_DISABLE; | |
5552 | break; | |
5553 | ||
5554 | case ARG_NO_LEGEND: | |
5555 | arg_legend = false; | |
5556 | break; | |
5557 | ||
e594a3b1 | 5558 | case ARG_DRY_RUN: |
599c7c54 | 5559 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 5560 | if (r < 0) |
599c7c54 | 5561 | return r; |
e594a3b1 LP |
5562 | break; |
5563 | ||
5564 | case ARG_EMPTY: | |
5565 | if (isempty(optarg) || streq(optarg, "refuse")) | |
5566 | arg_empty = EMPTY_REFUSE; | |
5567 | else if (streq(optarg, "allow")) | |
5568 | arg_empty = EMPTY_ALLOW; | |
5569 | else if (streq(optarg, "require")) | |
5570 | arg_empty = EMPTY_REQUIRE; | |
5571 | else if (streq(optarg, "force")) | |
5572 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
5573 | else if (streq(optarg, "create")) { |
5574 | arg_empty = EMPTY_CREATE; | |
5575 | ||
5576 | if (dry_run < 0) | |
5577 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
5578 | * anew. After all we cannot really break anyone's | |
5579 | * partition tables that way. */ | |
5580 | } else | |
e594a3b1 LP |
5581 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5582 | "Failed to parse --empty= parameter: %s", optarg); | |
5583 | break; | |
5584 | ||
5585 | case ARG_DISCARD: | |
599c7c54 | 5586 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 5587 | if (r < 0) |
599c7c54 | 5588 | return r; |
e594a3b1 LP |
5589 | break; |
5590 | ||
5591 | case ARG_FACTORY_RESET: | |
c3470872 | 5592 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 5593 | if (r < 0) |
c3470872 | 5594 | return r; |
e594a3b1 LP |
5595 | arg_factory_reset = r; |
5596 | break; | |
5597 | ||
5598 | case ARG_CAN_FACTORY_RESET: | |
5599 | arg_can_factory_reset = true; | |
5600 | break; | |
5601 | ||
5602 | case ARG_ROOT: | |
252d6267 LP |
5603 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
5604 | if (r < 0) | |
5605 | return r; | |
5606 | break; | |
5607 | ||
5608 | case ARG_IMAGE: | |
5609 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
5610 | if (r < 0) |
5611 | return r; | |
5612 | break; | |
5613 | ||
5614 | case ARG_SEED: | |
5615 | if (isempty(optarg)) { | |
5616 | arg_seed = SD_ID128_NULL; | |
5617 | arg_randomize = false; | |
5618 | } else if (streq(optarg, "random")) | |
5619 | arg_randomize = true; | |
5620 | else { | |
5621 | r = sd_id128_from_string(optarg, &arg_seed); | |
5622 | if (r < 0) | |
5623 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
5624 | ||
5625 | arg_randomize = false; | |
5626 | } | |
5627 | ||
5628 | break; | |
5629 | ||
5630 | case ARG_PRETTY: | |
c3470872 | 5631 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 5632 | if (r < 0) |
c3470872 | 5633 | return r; |
e594a3b1 LP |
5634 | arg_pretty = r; |
5635 | break; | |
5636 | ||
224c853f RP |
5637 | case ARG_DEFINITIONS: { |
5638 | _cleanup_free_ char *path = NULL; | |
5639 | r = parse_path_argument(optarg, false, &path); | |
e594a3b1 LP |
5640 | if (r < 0) |
5641 | return r; | |
224c853f RP |
5642 | if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0) |
5643 | return log_oom(); | |
e594a3b1 | 5644 | break; |
224c853f | 5645 | } |
e594a3b1 | 5646 | |
a26f4a49 LP |
5647 | case ARG_SIZE: { |
5648 | uint64_t parsed, rounded; | |
5649 | ||
170c9823 LP |
5650 | if (streq(optarg, "auto")) { |
5651 | arg_size = UINT64_MAX; | |
5652 | arg_size_auto = true; | |
5653 | break; | |
5654 | } | |
5655 | ||
a26f4a49 LP |
5656 | r = parse_size(optarg, 1024, &parsed); |
5657 | if (r < 0) | |
5658 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
5659 | ||
5660 | rounded = round_up_size(parsed, 4096); | |
5661 | if (rounded == 0) | |
5662 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
5663 | if (rounded == UINT64_MAX) | |
5664 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
5665 | ||
5666 | if (rounded != parsed) | |
e2341b6b DT |
5667 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")", |
5668 | parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded); | |
a26f4a49 LP |
5669 | |
5670 | arg_size = rounded; | |
170c9823 | 5671 | arg_size_auto = false; |
a26f4a49 LP |
5672 | break; |
5673 | } | |
b9df3536 | 5674 | |
a015fbe7 | 5675 | case ARG_JSON: |
b1e8f46c | 5676 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
5677 | if (r <= 0) |
5678 | return r; | |
a015fbe7 TH |
5679 | |
5680 | break; | |
5681 | ||
b9df3536 LP |
5682 | case ARG_KEY_FILE: { |
5683 | _cleanup_(erase_and_freep) char *k = NULL; | |
5684 | size_t n = 0; | |
5685 | ||
8b3c3a49 | 5686 | r = read_full_file_full( |
986311c2 | 5687 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
5688 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
5689 | NULL, | |
5690 | &k, &n); | |
b9df3536 LP |
5691 | if (r < 0) |
5692 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5693 | ||
5694 | erase_and_free(arg_key); | |
5695 | arg_key = TAKE_PTR(k); | |
5696 | arg_key_size = n; | |
5697 | break; | |
5698 | } | |
a26f4a49 | 5699 | |
b456191d DDM |
5700 | case ARG_PRIVATE_KEY: { |
5701 | _cleanup_(erase_and_freep) char *k = NULL; | |
5702 | size_t n = 0; | |
5703 | ||
5704 | r = read_full_file_full( | |
5705 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5706 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, | |
5707 | NULL, | |
5708 | &k, &n); | |
5709 | if (r < 0) | |
5710 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5711 | ||
5712 | EVP_PKEY_free(arg_private_key); | |
5713 | arg_private_key = NULL; | |
5714 | r = parse_private_key(k, n, &arg_private_key); | |
5715 | if (r < 0) | |
5716 | return r; | |
5717 | break; | |
5718 | } | |
5719 | ||
5720 | case ARG_CERTIFICATE: { | |
5721 | _cleanup_free_ char *cert = NULL; | |
5722 | size_t n = 0; | |
5723 | ||
5724 | r = read_full_file_full( | |
5725 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5726 | READ_FULL_FILE_CONNECT_SOCKET, | |
5727 | NULL, | |
5728 | &cert, &n); | |
5729 | if (r < 0) | |
5730 | return log_error_errno(r, "Failed to read certificate file '%s': %m", optarg); | |
5731 | ||
5732 | X509_free(arg_certificate); | |
5733 | arg_certificate = NULL; | |
5734 | r = parse_x509_certificate(cert, n, &arg_certificate); | |
5735 | if (r < 0) | |
5736 | return r; | |
5737 | break; | |
5738 | } | |
5739 | ||
889914ef LP |
5740 | case ARG_TPM2_DEVICE: { |
5741 | _cleanup_free_ char *device = NULL; | |
5742 | ||
5743 | if (streq(optarg, "list")) | |
5744 | return tpm2_list_devices(); | |
5745 | ||
5746 | if (!streq(optarg, "auto")) { | |
5747 | device = strdup(optarg); | |
5748 | if (!device) | |
5749 | return log_oom(); | |
5750 | } | |
5751 | ||
5752 | free(arg_tpm2_device); | |
5753 | arg_tpm2_device = TAKE_PTR(device); | |
5754 | break; | |
5755 | } | |
5756 | ||
222a951f LP |
5757 | case ARG_TPM2_PCRS: |
5758 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_pcr_mask); | |
889914ef LP |
5759 | if (r < 0) |
5760 | return r; | |
5761 | ||
889914ef | 5762 | break; |
889914ef | 5763 | |
02ef97cd LP |
5764 | case ARG_TPM2_PUBLIC_KEY: |
5765 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key); | |
5766 | if (r < 0) | |
5767 | return r; | |
5768 | ||
5769 | break; | |
5770 | ||
5771 | case ARG_TPM2_PUBLIC_KEY_PCRS: | |
5772 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_public_key_pcr_mask); | |
5773 | if (r < 0) | |
5774 | return r; | |
5775 | ||
5776 | break; | |
5777 | ||
4cee8333 DDM |
5778 | case ARG_SPLIT: |
5779 | r = parse_boolean_argument("--split=", optarg, NULL); | |
5780 | if (r < 0) | |
5781 | return r; | |
5782 | ||
5783 | arg_split = r; | |
5784 | break; | |
5785 | ||
81d1098b DDM |
5786 | case ARG_INCLUDE_PARTITIONS: |
5787 | if (arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE) | |
5788 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5789 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
5790 | ||
220780db | 5791 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
5792 | if (r < 0) |
5793 | return r; | |
5794 | ||
5795 | arg_filter_partitions_type = FILTER_PARTITIONS_INCLUDE; | |
5796 | ||
5797 | break; | |
5798 | ||
5799 | case ARG_EXCLUDE_PARTITIONS: | |
5800 | if (arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE) | |
5801 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5802 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
5803 | ||
220780db | 5804 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
5805 | if (r < 0) |
5806 | return r; | |
5807 | ||
5808 | arg_filter_partitions_type = FILTER_PARTITIONS_EXCLUDE; | |
5809 | ||
5810 | break; | |
5811 | ||
7d505753 DDM |
5812 | case ARG_SKIP_PARTITIONS: |
5813 | r = parse_partition_types(optarg, &arg_skip_partitions, &arg_n_skip_partitions); | |
5814 | if (r < 0) | |
5815 | return r; | |
5816 | ||
5817 | break; | |
5818 | ||
e594a3b1 LP |
5819 | case '?': |
5820 | return -EINVAL; | |
5821 | ||
5822 | default: | |
04499a70 | 5823 | assert_not_reached(); |
e594a3b1 LP |
5824 | } |
5825 | ||
5826 | if (argc - optind > 1) | |
5827 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5828 | "Expected at most one argument, the path to the block device."); | |
5829 | ||
a26f4a49 | 5830 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 5831 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 5832 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
5833 | |
5834 | if (arg_can_factory_reset) | |
a26f4a49 LP |
5835 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
5836 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
5837 | * open things strictly read-only. */ | |
5838 | else if (dry_run >= 0) | |
5839 | arg_dry_run = dry_run; | |
5840 | ||
170c9823 | 5841 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
5842 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5843 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 5844 | |
252d6267 LP |
5845 | if (arg_image && arg_root) |
5846 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
5847 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
5848 | |
5849 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
5850 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
5851 | * is vendor-supplied but the root fs formatted on first boot. */ | |
5852 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
5853 | if (r <= 0) { | |
5854 | if (r < 0 && r != -ENOENT) | |
5855 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
5856 | ||
5857 | arg_root = strdup("/sysroot"); | |
5858 | } else | |
5859 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
5860 | if (!arg_root) |
5861 | return log_oom(); | |
5862 | } | |
5863 | ||
e594a3b1 | 5864 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 5865 | |
252d6267 | 5866 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
5867 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5868 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
5869 | ||
4cee8333 DDM |
5870 | if (arg_split && !arg_node) |
5871 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5872 | "A path to a loopback file must be specified when --split is used."); | |
5873 | ||
889914ef LP |
5874 | if (arg_tpm2_pcr_mask == UINT32_MAX) |
5875 | arg_tpm2_pcr_mask = TPM2_PCR_MASK_DEFAULT; | |
02ef97cd LP |
5876 | if (arg_tpm2_public_key_pcr_mask == UINT32_MAX) |
5877 | arg_tpm2_public_key_pcr_mask = UINT32_C(1) << TPM_PCR_INDEX_KERNEL_IMAGE; | |
889914ef | 5878 | |
a26d463d DDM |
5879 | if (arg_pretty < 0 && isatty(STDOUT_FILENO)) |
5880 | arg_pretty = true; | |
5881 | ||
e594a3b1 LP |
5882 | return 1; |
5883 | } | |
5884 | ||
5885 | static int parse_proc_cmdline_factory_reset(void) { | |
5886 | bool b; | |
5887 | int r; | |
5888 | ||
5889 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
5890 | return 0; | |
5891 | ||
5892 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
5893 | return 0; | |
5894 | ||
5895 | r = proc_cmdline_get_bool("systemd.factory_reset", &b); | |
5896 | if (r < 0) | |
5897 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
5898 | if (r > 0) { | |
5899 | arg_factory_reset = b; | |
5900 | ||
5901 | if (b) | |
5902 | log_notice("Honouring factory reset requested via kernel command line."); | |
5903 | } | |
5904 | ||
5905 | return 0; | |
5906 | } | |
5907 | ||
5908 | static int parse_efi_variable_factory_reset(void) { | |
5909 | _cleanup_free_ char *value = NULL; | |
5910 | int r; | |
5911 | ||
5912 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
5913 | return 0; | |
5914 | ||
5915 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
5916 | return 0; | |
5917 | ||
e6f055cb | 5918 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
e594a3b1 LP |
5919 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
5920 | return 0; | |
5921 | if (r < 0) | |
5922 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); | |
5923 | ||
5924 | r = parse_boolean(value); | |
5925 | if (r < 0) | |
5926 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
5927 | ||
5928 | arg_factory_reset = r; | |
5929 | if (r) | |
111a3aae | 5930 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
5931 | |
5932 | return 0; | |
5933 | } | |
5934 | ||
5935 | static int remove_efi_variable_factory_reset(void) { | |
5936 | int r; | |
5937 | ||
e6f055cb | 5938 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
e594a3b1 LP |
5939 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
5940 | return 0; | |
5941 | if (r < 0) | |
5942 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); | |
5943 | ||
5944 | log_info("Successfully unset EFI variable FactoryReset."); | |
5945 | return 0; | |
5946 | } | |
5947 | ||
252d6267 LP |
5948 | static int acquire_root_devno( |
5949 | const char *p, | |
5950 | const char *root, | |
5951 | int mode, | |
5952 | char **ret, | |
5953 | int *ret_fd) { | |
5954 | ||
5955 | _cleanup_free_ char *found_path = NULL; | |
5956 | dev_t devno, fd_devno = MODE_INVALID; | |
e594a3b1 LP |
5957 | _cleanup_close_ int fd = -1; |
5958 | struct stat st; | |
e594a3b1 LP |
5959 | int r; |
5960 | ||
a26f4a49 LP |
5961 | assert(p); |
5962 | assert(ret); | |
5963 | assert(ret_fd); | |
5964 | ||
252d6267 | 5965 | fd = chase_symlinks_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 5966 | if (fd < 0) |
252d6267 | 5967 | return fd; |
e594a3b1 LP |
5968 | |
5969 | if (fstat(fd, &st) < 0) | |
5970 | return -errno; | |
5971 | ||
5972 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 5973 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 5974 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
5975 | return 0; |
5976 | } | |
5977 | ||
252d6267 LP |
5978 | if (S_ISBLK(st.st_mode)) { |
5979 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 5980 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
5981 | if (root) |
5982 | return -EPERM; | |
5983 | ||
a26f4a49 | 5984 | fd_devno = devno = st.st_rdev; |
252d6267 | 5985 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
5986 | |
5987 | devno = st.st_dev; | |
a26f4a49 | 5988 | if (major(devno) == 0) { |
e594a3b1 LP |
5989 | r = btrfs_get_block_device_fd(fd, &devno); |
5990 | if (r == -ENOTTY) /* not btrfs */ | |
5991 | return -ENODEV; | |
5992 | if (r < 0) | |
5993 | return r; | |
5994 | } | |
e594a3b1 LP |
5995 | } else |
5996 | return -ENOTBLK; | |
5997 | ||
5998 | /* From dm-crypt to backing partition */ | |
5999 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
6000 | if (r == -ENOENT) |
6001 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
6002 | else if (r < 0) | |
e594a3b1 LP |
6003 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
6004 | ||
6005 | /* From partition to whole disk containing it */ | |
6006 | r = block_get_whole_disk(devno, &devno); | |
6007 | if (r < 0) | |
162392b7 | 6008 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 6009 | |
4fe46c34 | 6010 | r = devname_from_devnum(S_IFBLK, devno, ret); |
a26f4a49 LP |
6011 | if (r < 0) |
6012 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
6013 | ||
6bbae9f8 | 6014 | /* Only if we still look at the same block device we can reuse the fd. Otherwise return an |
a26f4a49 | 6015 | * invalidated fd. */ |
f5fbe71d | 6016 | *ret_fd = fd_devno != MODE_INVALID && fd_devno == devno ? TAKE_FD(fd) : -1; |
a26f4a49 | 6017 | return 0; |
e594a3b1 LP |
6018 | } |
6019 | ||
a26f4a49 | 6020 | static int find_root(char **ret, int *ret_fd) { |
54632d2e | 6021 | _cleanup_free_ char *device = NULL; |
5980d463 | 6022 | int r; |
e594a3b1 | 6023 | |
a26f4a49 LP |
6024 | assert(ret); |
6025 | assert(ret_fd); | |
6026 | ||
e594a3b1 | 6027 | if (arg_node) { |
a26f4a49 LP |
6028 | if (arg_empty == EMPTY_CREATE) { |
6029 | _cleanup_close_ int fd = -1; | |
6030 | _cleanup_free_ char *s = NULL; | |
6031 | ||
6032 | s = strdup(arg_node); | |
6033 | if (!s) | |
6034 | return log_oom(); | |
6035 | ||
5332d7c6 | 6036 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
6037 | if (fd < 0) |
6038 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
6039 | ||
6040 | *ret = TAKE_PTR(s); | |
6041 | *ret_fd = TAKE_FD(fd); | |
6042 | return 0; | |
6043 | } | |
6044 | ||
252d6267 LP |
6045 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
6046 | * we'll take it relative to the host, not the image */ | |
6047 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, ret, ret_fd); | |
67f0ac8c LP |
6048 | if (r == -EUCLEAN) |
6049 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 6050 | if (r < 0) |
aa2a74ad | 6051 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
6052 | |
6053 | return 0; | |
6054 | } | |
6055 | ||
a26f4a49 LP |
6056 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
6057 | ||
54632d2e KK |
6058 | /* If the root mount has been replaced by some form of volatile file system (overlayfs), the |
6059 | * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that | |
6060 | * here. */ | |
6061 | r = readlink_malloc("/run/systemd/volatile-root", &device); | |
6062 | if (r == -ENOENT) { /* volatile-root not found */ | |
6063 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The | |
6064 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
6065 | * (think: volatile setups) */ | |
e594a3b1 | 6066 | |
54632d2e | 6067 | FOREACH_STRING(p, "/", "/usr") { |
e594a3b1 | 6068 | |
54632d2e KK |
6069 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, ret, ret_fd); |
6070 | if (r < 0) { | |
6071 | if (r == -EUCLEAN) | |
6072 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
6073 | if (r != -ENODEV) | |
6074 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
6075 | } else | |
6076 | return 0; | |
6077 | } | |
6078 | } else if (r < 0) | |
6079 | return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m"); | |
6080 | else { | |
6081 | r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, ret, ret_fd); | |
6082 | if (r == -EUCLEAN) | |
6083 | return btrfs_log_dev_root(LOG_ERR, r, device); | |
6084 | if (r < 0) | |
6085 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device); | |
6086 | ||
6087 | return 0; | |
e594a3b1 LP |
6088 | } |
6089 | ||
6090 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
6091 | } | |
6092 | ||
f9b3afae | 6093 | static int resize_pt(int fd) { |
f9b3afae LP |
6094 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
6095 | int r; | |
6096 | ||
6097 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
6098 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
6099 | * immediately write it again, with no changes. */ | |
6100 | ||
f8cf3d19 | 6101 | r = fdisk_new_context_fd(fd, /* read_only= */ false, &c); |
f9b3afae | 6102 | if (r < 0) |
ddb6eeaf | 6103 | return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6104 | |
6105 | r = fdisk_has_label(c); | |
6106 | if (r < 0) | |
ddb6eeaf | 6107 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6108 | if (r == 0) { |
6109 | log_debug("Not resizing partition table, as there currently is none."); | |
6110 | return 0; | |
6111 | } | |
6112 | ||
6113 | r = fdisk_write_disklabel(c); | |
6114 | if (r < 0) | |
6115 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
6116 | ||
6117 | log_info("Resized partition table."); | |
6118 | return 1; | |
6119 | } | |
6120 | ||
252d6267 LP |
6121 | static int resize_backing_fd( |
6122 | const char *node, /* The primary way we access the disk image to operate on */ | |
6123 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
6124 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
6125 | LoopDevice *loop_device) { | |
6126 | ||
a26f4a49 | 6127 | _cleanup_close_ int writable_fd = -1; |
252d6267 | 6128 | uint64_t current_size; |
a26f4a49 LP |
6129 | struct stat st; |
6130 | int r; | |
6131 | ||
6132 | assert(node); | |
6133 | assert(fd); | |
6134 | ||
6135 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
6136 | return 0; | |
6137 | ||
6138 | if (*fd < 0) { | |
6139 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
6140 | * keep a reference to the file we can pass around. */ | |
6141 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
6142 | if (*fd < 0) | |
6143 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
6144 | } | |
6145 | ||
6146 | if (fstat(*fd, &st) < 0) | |
6147 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
6148 | ||
252d6267 LP |
6149 | if (S_ISBLK(st.st_mode)) { |
6150 | if (!backing_file) | |
6151 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
6152 | ||
6153 | assert(loop_device); | |
a26f4a49 | 6154 | |
252d6267 LP |
6155 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
6156 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
6157 | } else { | |
6158 | r = stat_verify_regular(&st); | |
6159 | if (r < 0) | |
6160 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
6161 | ||
6162 | assert(!backing_file); | |
6163 | assert(!loop_device); | |
6164 | current_size = st.st_size; | |
6165 | } | |
6166 | ||
252d6267 | 6167 | if (current_size >= arg_size) { |
2b59bf51 ZJS |
6168 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", |
6169 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 LP |
6170 | return 0; |
6171 | } | |
6172 | ||
252d6267 LP |
6173 | if (S_ISBLK(st.st_mode)) { |
6174 | assert(backing_file); | |
6175 | ||
6176 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
6177 | * backing file, hence let's do that. */ | |
6178 | ||
6179 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
6180 | if (writable_fd < 0) | |
6181 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
6182 | ||
6183 | if (fstat(writable_fd, &st) < 0) | |
6184 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
6185 | ||
6186 | r = stat_verify_regular(&st); | |
6187 | if (r < 0) | |
6188 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
6189 | ||
6190 | if ((uint64_t) st.st_size != current_size) | |
6191 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2b59bf51 ZJS |
6192 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", |
6193 | node, backing_file); | |
252d6267 LP |
6194 | } else { |
6195 | assert(S_ISREG(st.st_mode)); | |
6196 | assert(!backing_file); | |
a26f4a49 | 6197 | |
252d6267 LP |
6198 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
6199 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
6200 | * as fdisk can't accept it anyway. */ | |
6201 | ||
6202 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
6203 | if (writable_fd < 0) | |
6204 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
6205 | } | |
a26f4a49 LP |
6206 | |
6207 | if (!arg_discard) { | |
6208 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
6209 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
6210 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
2b59bf51 | 6211 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 LP |
6212 | |
6213 | /* Fallback to truncation, if fallocate() is not supported. */ | |
6214 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
6215 | } else { | |
252d6267 | 6216 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6217 | log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node); |
a26f4a49 | 6218 | else |
2b59bf51 ZJS |
6219 | log_info("File '%s' grown from %s to %s by allocation.", |
6220 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 | 6221 | |
252d6267 | 6222 | goto done; |
a26f4a49 LP |
6223 | } |
6224 | } | |
6225 | ||
6226 | if (ftruncate(writable_fd, arg_size) < 0) | |
6227 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
2b59bf51 | 6228 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 | 6229 | |
252d6267 | 6230 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6231 | log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size)); |
252d6267 | 6232 | else |
2b59bf51 ZJS |
6233 | log_info("File '%s' grown from %s to %s by truncation.", |
6234 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
252d6267 LP |
6235 | |
6236 | done: | |
f9b3afae LP |
6237 | r = resize_pt(writable_fd); |
6238 | if (r < 0) | |
6239 | return r; | |
6240 | ||
252d6267 LP |
6241 | if (loop_device) { |
6242 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
6243 | if (r < 0) | |
6244 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
6245 | } | |
a26f4a49 LP |
6246 | |
6247 | return 1; | |
6248 | } | |
6249 | ||
170c9823 | 6250 | static int determine_auto_size(Context *c) { |
994b3031 | 6251 | uint64_t sum; |
170c9823 | 6252 | |
ac33e147 | 6253 | assert(c); |
170c9823 | 6254 | |
994b3031 LP |
6255 | sum = round_up_size(GPT_METADATA_SIZE, 4096); |
6256 | ||
170c9823 LP |
6257 | LIST_FOREACH(partitions, p, c->partitions) { |
6258 | uint64_t m; | |
6259 | ||
6260 | if (p->dropped) | |
6261 | continue; | |
6262 | ||
994b3031 | 6263 | m = partition_min_size_with_padding(c, p); |
170c9823 LP |
6264 | if (m > UINT64_MAX - sum) |
6265 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
6266 | ||
6267 | sum += m; | |
6268 | } | |
6269 | ||
2b59bf51 ZJS |
6270 | if (c->total != UINT64_MAX) |
6271 | /* Image already allocated? Then show its size. */ | |
6272 | log_info("Automatically determined minimal disk image size as %s, current image size is %s.", | |
6273 | FORMAT_BYTES(sum), FORMAT_BYTES(c->total)); | |
6274 | else | |
6275 | /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */ | |
6276 | log_info("Automatically determined minimal disk image size as %s.", | |
6277 | FORMAT_BYTES(sum)); | |
170c9823 LP |
6278 | |
6279 | arg_size = sum; | |
6280 | return 0; | |
6281 | } | |
6282 | ||
e594a3b1 | 6283 | static int run(int argc, char *argv[]) { |
252d6267 | 6284 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
252d6267 | 6285 | _cleanup_(umount_and_rmdir_and_freep) char *mounted_dir = NULL; |
e594a3b1 LP |
6286 | _cleanup_(context_freep) Context* context = NULL; |
6287 | _cleanup_free_ char *node = NULL; | |
a26f4a49 | 6288 | _cleanup_close_ int backing_fd = -1; |
252d6267 | 6289 | bool from_scratch, node_is_our_loop = false; |
e594a3b1 LP |
6290 | int r; |
6291 | ||
6292 | log_show_color(true); | |
6293 | log_parse_environment(); | |
6294 | log_open(); | |
6295 | ||
e594a3b1 LP |
6296 | r = parse_argv(argc, argv); |
6297 | if (r <= 0) | |
6298 | return r; | |
6299 | ||
6300 | r = parse_proc_cmdline_factory_reset(); | |
6301 | if (r < 0) | |
6302 | return r; | |
6303 | ||
6304 | r = parse_efi_variable_factory_reset(); | |
6305 | if (r < 0) | |
6306 | return r; | |
6307 | ||
30f19400 LP |
6308 | #if HAVE_LIBCRYPTSETUP |
6309 | cryptsetup_enable_logging(NULL); | |
6310 | #endif | |
6311 | ||
252d6267 LP |
6312 | if (arg_image) { |
6313 | assert(!arg_root); | |
6314 | ||
6315 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
6316 | * systems */ | |
6317 | r = mount_image_privately_interactively( | |
6318 | arg_image, | |
6319 | DISSECT_IMAGE_MOUNT_READ_ONLY | | |
6320 | (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) */ | |
6321 | DISSECT_IMAGE_GPT_ONLY | | |
6322 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
6323 | DISSECT_IMAGE_USR_NO_ROOT | | |
6324 | DISSECT_IMAGE_REQUIRE_ROOT, | |
6325 | &mounted_dir, | |
e330f97a | 6326 | &loop_device); |
252d6267 LP |
6327 | if (r < 0) |
6328 | return r; | |
6329 | ||
6330 | arg_root = strdup(mounted_dir); | |
6331 | if (!arg_root) | |
6332 | return log_oom(); | |
6333 | ||
6334 | if (!arg_node) { | |
6335 | arg_node = strdup(loop_device->node); | |
6336 | if (!arg_node) | |
6337 | return log_oom(); | |
6338 | ||
3d62af7d | 6339 | /* Remember that the device we are about to manipulate is actually the one we |
252d6267 LP |
6340 | * allocated here, and thus to increase its backing file we know what to do */ |
6341 | node_is_our_loop = true; | |
6342 | } | |
6343 | } | |
6344 | ||
e594a3b1 LP |
6345 | context = context_new(arg_seed); |
6346 | if (!context) | |
6347 | return log_oom(); | |
6348 | ||
224c853f RP |
6349 | strv_uniq(arg_definitions); |
6350 | ||
e594a3b1 LP |
6351 | r = context_read_definitions(context, arg_definitions, arg_root); |
6352 | if (r < 0) | |
6353 | return r; | |
6354 | ||
a26f4a49 | 6355 | r = find_root(&node, &backing_fd); |
0ae5ffe0 YW |
6356 | if (r < 0) |
6357 | return r; | |
6358 | ||
a26f4a49 | 6359 | if (arg_size != UINT64_MAX) { |
252d6267 LP |
6360 | r = resize_backing_fd( |
6361 | node, | |
6362 | &backing_fd, | |
6363 | node_is_our_loop ? arg_image : NULL, | |
6364 | node_is_our_loop ? loop_device : NULL); | |
a26f4a49 LP |
6365 | if (r < 0) |
6366 | return r; | |
6367 | } | |
6368 | ||
6369 | r = context_load_partition_table(context, node, &backing_fd); | |
e594a3b1 LP |
6370 | if (r == -EHWPOISON) |
6371 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
6372 | * really an error when called at boot. */ | |
6373 | if (r < 0) | |
6374 | return r; | |
6375 | from_scratch = r > 0; /* Starting from scratch */ | |
6376 | ||
6377 | if (arg_can_factory_reset) { | |
6378 | r = context_can_factory_reset(context); | |
6379 | if (r < 0) | |
6380 | return r; | |
6381 | if (r == 0) | |
6382 | return EXIT_FAILURE; | |
6383 | ||
6384 | return 0; | |
6385 | } | |
6386 | ||
6387 | r = context_factory_reset(context, from_scratch); | |
6388 | if (r < 0) | |
6389 | return r; | |
6390 | if (r > 0) { | |
6391 | /* We actually did a factory reset! */ | |
6392 | r = remove_efi_variable_factory_reset(); | |
6393 | if (r < 0) | |
6394 | return r; | |
6395 | ||
6396 | /* Reload the reduced partition table */ | |
6397 | context_unload_partition_table(context); | |
a26f4a49 | 6398 | r = context_load_partition_table(context, node, &backing_fd); |
e594a3b1 LP |
6399 | if (r < 0) |
6400 | return r; | |
6401 | } | |
6402 | ||
6403 | #if 0 | |
6404 | (void) context_dump_partitions(context, node); | |
6405 | putchar('\n'); | |
6406 | #endif | |
6407 | ||
6408 | r = context_read_seed(context, arg_root); | |
6409 | if (r < 0) | |
6410 | return r; | |
6411 | ||
8bbbdfd7 DDM |
6412 | /* Make sure each partition has a unique UUID and unique label */ |
6413 | r = context_acquire_partition_uuids_and_labels(context); | |
6414 | if (r < 0) | |
6415 | return r; | |
6416 | ||
c4a87b76 DDM |
6417 | r = context_minimize(context); |
6418 | if (r < 0) | |
6419 | return r; | |
6420 | ||
757bc2e4 | 6421 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
6422 | r = context_open_copy_block_paths( |
6423 | context, | |
7802194a | 6424 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
6425 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
6426 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
6427 | if (r < 0) |
6428 | return r; | |
6429 | ||
170c9823 LP |
6430 | if (arg_size_auto) { |
6431 | r = determine_auto_size(context); | |
6432 | if (r < 0) | |
6433 | return r; | |
6434 | ||
6435 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
6436 | context_unload_partition_table(context); | |
6437 | ||
ac33e147 | 6438 | assert(arg_size != UINT64_MAX); |
252d6267 LP |
6439 | r = resize_backing_fd( |
6440 | node, | |
6441 | &backing_fd, | |
6442 | node_is_our_loop ? arg_image : NULL, | |
6443 | node_is_our_loop ? loop_device : NULL); | |
170c9823 LP |
6444 | if (r < 0) |
6445 | return r; | |
6446 | ||
6447 | r = context_load_partition_table(context, node, &backing_fd); | |
6448 | if (r < 0) | |
6449 | return r; | |
6450 | } | |
6451 | ||
e594a3b1 LP |
6452 | /* First try to fit new partitions in, dropping by priority until it fits */ |
6453 | for (;;) { | |
14a4c4ed LP |
6454 | uint64_t largest_free_area; |
6455 | ||
6456 | if (context_allocate_partitions(context, &largest_free_area)) | |
e594a3b1 LP |
6457 | break; /* Success! */ |
6458 | ||
9ccceb9d | 6459 | if (!context_drop_or_foreignize_one_priority(context)) { |
d17db7b2 | 6460 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), |
14a4c4ed | 6461 | "Can't fit requested partitions into available free space (%s), refusing.", |
2b59bf51 | 6462 | FORMAT_BYTES(largest_free_area)); |
d17db7b2 LP |
6463 | determine_auto_size(context); |
6464 | return r; | |
6465 | } | |
e594a3b1 LP |
6466 | } |
6467 | ||
6468 | /* Now assign free space according to the weight logic */ | |
6469 | r = context_grow_partitions(context); | |
6470 | if (r < 0) | |
6471 | return r; | |
6472 | ||
0b7f574f | 6473 | /* Now calculate where each new partition gets placed */ |
e594a3b1 LP |
6474 | context_place_partitions(context); |
6475 | ||
b5b7879a | 6476 | (void) context_dump(context, node, /*late=*/ false); |
a26d463d | 6477 | |
e594a3b1 LP |
6478 | r = context_write_partition_table(context, node, from_scratch); |
6479 | if (r < 0) | |
6480 | return r; | |
6481 | ||
4cee8333 DDM |
6482 | r = context_split(context); |
6483 | if (r < 0) | |
6484 | return r; | |
6485 | ||
b5b7879a DDM |
6486 | (void) context_dump(context, node, /*late=*/ true); |
6487 | ||
e594a3b1 LP |
6488 | return 0; |
6489 | } | |
6490 | ||
6491 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |