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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" |
f461a28d | 23 | #include "chase.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; |
8275334b DDM |
148 | static sd_id128_t *arg_defer_partitions = NULL; |
149 | static size_t arg_n_defer_partitions = 0; | |
e1878ef7 | 150 | static uint64_t arg_sector_size = 0; |
84be0c71 | 151 | static ImagePolicy *arg_image_policy = NULL; |
e594a3b1 LP |
152 | |
153 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 154 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
224c853f | 155 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep); |
b9df3536 | 156 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
b456191d DDM |
157 | STATIC_DESTRUCTOR_REGISTER(arg_private_key, EVP_PKEY_freep); |
158 | STATIC_DESTRUCTOR_REGISTER(arg_certificate, X509_freep); | |
889914ef | 159 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
02ef97cd | 160 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep); |
81d1098b | 161 | STATIC_DESTRUCTOR_REGISTER(arg_filter_partitions, freep); |
84be0c71 | 162 | STATIC_DESTRUCTOR_REGISTER(arg_image_policy, image_policy_freep); |
e594a3b1 | 163 | |
e594a3b1 | 164 | typedef struct FreeArea FreeArea; |
e594a3b1 | 165 | |
889914ef LP |
166 | typedef enum EncryptMode { |
167 | ENCRYPT_OFF, | |
168 | ENCRYPT_KEY_FILE, | |
169 | ENCRYPT_TPM2, | |
170 | ENCRYPT_KEY_FILE_TPM2, | |
171 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 172 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
173 | } EncryptMode; |
174 | ||
b5b7879a DDM |
175 | typedef enum VerityMode { |
176 | VERITY_OFF, | |
177 | VERITY_DATA, | |
178 | VERITY_HASH, | |
b456191d | 179 | VERITY_SIG, |
b5b7879a DDM |
180 | _VERITY_MODE_MAX, |
181 | _VERITY_MODE_INVALID = -EINVAL, | |
182 | } VerityMode; | |
183 | ||
5c33b686 DDM |
184 | typedef enum MinimizeMode { |
185 | MINIMIZE_OFF, | |
186 | MINIMIZE_BEST, | |
187 | MINIMIZE_GUESS, | |
188 | _MINIMIZE_MODE_MAX, | |
189 | _MINIMIZE_MODE_INVALID = -EINVAL, | |
190 | } MinimizeMode; | |
191 | ||
448cfb7f | 192 | typedef struct Partition { |
e594a3b1 | 193 | char *definition_path; |
39fc0174 | 194 | char **drop_in_files; |
e594a3b1 | 195 | |
22e932f4 | 196 | GptPartitionType type; |
e594a3b1 | 197 | sd_id128_t current_uuid, new_uuid; |
11749b61 | 198 | bool new_uuid_is_set; |
e594a3b1 | 199 | char *current_label, *new_label; |
15cad3a2 | 200 | sd_id128_t fs_uuid, luks_uuid; |
e594a3b1 LP |
201 | |
202 | bool dropped; | |
203 | bool factory_reset; | |
204 | int32_t priority; | |
205 | ||
206 | uint32_t weight, padding_weight; | |
207 | ||
208 | uint64_t current_size, new_size; | |
209 | uint64_t size_min, size_max; | |
210 | ||
211 | uint64_t current_padding, new_padding; | |
212 | uint64_t padding_min, padding_max; | |
213 | ||
214 | uint64_t partno; | |
215 | uint64_t offset; | |
216 | ||
217 | struct fdisk_partition *current_partition; | |
218 | struct fdisk_partition *new_partition; | |
219 | FreeArea *padding_area; | |
220 | FreeArea *allocated_to_area; | |
221 | ||
757bc2e4 | 222 | char *copy_blocks_path; |
7d07030e | 223 | bool copy_blocks_path_is_our_file; |
5c08da58 | 224 | bool copy_blocks_auto; |
585c5c75 | 225 | const char *copy_blocks_root; |
757bc2e4 LP |
226 | int copy_blocks_fd; |
227 | uint64_t copy_blocks_size; | |
228 | ||
53171c04 | 229 | char *format; |
8a794850 | 230 | char **copy_files; |
a9af8276 | 231 | char **exclude_files; |
d83d8048 | 232 | char **make_directories; |
889914ef | 233 | EncryptMode encrypt; |
b5b7879a DDM |
234 | VerityMode verity; |
235 | char *verity_match_key; | |
5c33b686 | 236 | MinimizeMode minimize; |
53171c04 | 237 | |
e73309c5 | 238 | uint64_t gpt_flags; |
ff0771bf | 239 | int no_auto; |
e73309c5 | 240 | int read_only; |
1c41c1dc | 241 | int growfs; |
e73309c5 | 242 | |
b5b7879a DDM |
243 | uint8_t *roothash; |
244 | size_t roothash_size; | |
245 | ||
4cee8333 | 246 | char *split_name_format; |
62108348 | 247 | char *split_path; |
4cee8333 | 248 | |
448cfb7f | 249 | struct Partition *siblings[_VERITY_MODE_MAX]; |
b5b7879a | 250 | |
448cfb7f DDM |
251 | LIST_FIELDS(struct Partition, partitions); |
252 | } Partition; | |
e594a3b1 LP |
253 | |
254 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
255 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
256 | ||
257 | struct FreeArea { | |
258 | Partition *after; | |
259 | uint64_t size; | |
260 | uint64_t allocated; | |
261 | }; | |
262 | ||
448cfb7f | 263 | typedef struct Context { |
e594a3b1 LP |
264 | LIST_HEAD(Partition, partitions); |
265 | size_t n_partitions; | |
266 | ||
267 | FreeArea **free_areas; | |
319a4f4b | 268 | size_t n_free_areas; |
e594a3b1 LP |
269 | |
270 | uint64_t start, end, total; | |
271 | ||
272 | struct fdisk_context *fdisk_context; | |
994b3031 LP |
273 | uint64_t sector_size; |
274 | uint64_t grain_size; | |
e594a3b1 LP |
275 | |
276 | sd_id128_t seed; | |
cc751c75 DDM |
277 | |
278 | char *node; | |
db1d4e6b | 279 | bool node_is_our_file; |
cc751c75 DDM |
280 | int backing_fd; |
281 | ||
282 | bool from_scratch; | |
448cfb7f | 283 | } Context; |
e594a3b1 | 284 | |
889914ef LP |
285 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
286 | [ENCRYPT_OFF] = "off", | |
287 | [ENCRYPT_KEY_FILE] = "key-file", | |
288 | [ENCRYPT_TPM2] = "tpm2", | |
289 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
290 | }; | |
291 | ||
b5b7879a DDM |
292 | static const char *verity_mode_table[_VERITY_MODE_MAX] = { |
293 | [VERITY_OFF] = "off", | |
294 | [VERITY_DATA] = "data", | |
295 | [VERITY_HASH] = "hash", | |
b456191d | 296 | [VERITY_SIG] = "signature", |
b5b7879a DDM |
297 | }; |
298 | ||
5c33b686 DDM |
299 | static const char *minimize_mode_table[_MINIMIZE_MODE_MAX] = { |
300 | [MINIMIZE_OFF] = "off", | |
301 | [MINIMIZE_BEST] = "best", | |
302 | [MINIMIZE_GUESS] = "guess", | |
303 | }; | |
304 | ||
2709d029 | 305 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); |
86bebe38 | 306 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode); |
5c33b686 | 307 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(minimize_mode, MinimizeMode, MINIMIZE_BEST); |
889914ef | 308 | |
e594a3b1 LP |
309 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
310 | return (v / p) * p; | |
311 | } | |
312 | ||
313 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
314 | ||
315 | v = DIV_ROUND_UP(v, p); | |
316 | ||
317 | if (v > UINT64_MAX / p) | |
318 | return UINT64_MAX; /* overflow */ | |
319 | ||
320 | return v * p; | |
321 | } | |
322 | ||
323 | static Partition *partition_new(void) { | |
324 | Partition *p; | |
325 | ||
326 | p = new(Partition, 1); | |
327 | if (!p) | |
328 | return NULL; | |
329 | ||
330 | *p = (Partition) { | |
331 | .weight = 1000, | |
332 | .padding_weight = 0, | |
333 | .current_size = UINT64_MAX, | |
334 | .new_size = UINT64_MAX, | |
335 | .size_min = UINT64_MAX, | |
336 | .size_max = UINT64_MAX, | |
337 | .current_padding = UINT64_MAX, | |
338 | .new_padding = UINT64_MAX, | |
339 | .padding_min = UINT64_MAX, | |
340 | .padding_max = UINT64_MAX, | |
341 | .partno = UINT64_MAX, | |
342 | .offset = UINT64_MAX, | |
254d1313 | 343 | .copy_blocks_fd = -EBADF, |
757bc2e4 | 344 | .copy_blocks_size = UINT64_MAX, |
ff0771bf | 345 | .no_auto = -1, |
e73309c5 | 346 | .read_only = -1, |
1c41c1dc | 347 | .growfs = -1, |
e594a3b1 LP |
348 | }; |
349 | ||
350 | return p; | |
351 | } | |
352 | ||
353 | static Partition* partition_free(Partition *p) { | |
354 | if (!p) | |
355 | return NULL; | |
356 | ||
357 | free(p->current_label); | |
358 | free(p->new_label); | |
359 | free(p->definition_path); | |
39fc0174 | 360 | strv_free(p->drop_in_files); |
e594a3b1 LP |
361 | |
362 | if (p->current_partition) | |
363 | fdisk_unref_partition(p->current_partition); | |
364 | if (p->new_partition) | |
365 | fdisk_unref_partition(p->new_partition); | |
366 | ||
7d07030e DDM |
367 | if (p->copy_blocks_path_is_our_file) |
368 | unlink_and_free(p->copy_blocks_path); | |
369 | else | |
370 | free(p->copy_blocks_path); | |
757bc2e4 LP |
371 | safe_close(p->copy_blocks_fd); |
372 | ||
53171c04 | 373 | free(p->format); |
8a794850 | 374 | strv_free(p->copy_files); |
a9af8276 | 375 | strv_free(p->exclude_files); |
d83d8048 | 376 | strv_free(p->make_directories); |
b5b7879a DDM |
377 | free(p->verity_match_key); |
378 | ||
379 | free(p->roothash); | |
53171c04 | 380 | |
4cee8333 | 381 | free(p->split_name_format); |
a2d7c42e | 382 | unlink_and_free(p->split_path); |
4cee8333 | 383 | |
e594a3b1 LP |
384 | return mfree(p); |
385 | } | |
386 | ||
9ccceb9d YW |
387 | static void partition_foreignize(Partition *p) { |
388 | assert(p); | |
389 | assert(PARTITION_EXISTS(p)); | |
390 | ||
391 | /* Reset several parameters set through definition file to make the partition foreign. */ | |
392 | ||
9ccceb9d YW |
393 | p->definition_path = mfree(p->definition_path); |
394 | p->drop_in_files = strv_free(p->drop_in_files); | |
395 | ||
396 | p->copy_blocks_path = mfree(p->copy_blocks_path); | |
397 | p->copy_blocks_fd = safe_close(p->copy_blocks_fd); | |
585c5c75 | 398 | p->copy_blocks_root = NULL; |
9ccceb9d YW |
399 | |
400 | p->format = mfree(p->format); | |
401 | p->copy_files = strv_free(p->copy_files); | |
a9af8276 | 402 | p->exclude_files = strv_free(p->exclude_files); |
9ccceb9d YW |
403 | p->make_directories = strv_free(p->make_directories); |
404 | p->verity_match_key = mfree(p->verity_match_key); | |
405 | ||
9ccceb9d YW |
406 | p->priority = 0; |
407 | p->weight = 1000; | |
408 | p->padding_weight = 0; | |
409 | p->size_min = UINT64_MAX; | |
410 | p->size_max = UINT64_MAX; | |
411 | p->padding_min = UINT64_MAX; | |
412 | p->padding_max = UINT64_MAX; | |
413 | p->no_auto = -1; | |
414 | p->read_only = -1; | |
415 | p->growfs = -1; | |
416 | p->verity = VERITY_OFF; | |
417 | } | |
418 | ||
7d505753 | 419 | static bool partition_exclude(const Partition *p) { |
81d1098b DDM |
420 | assert(p); |
421 | ||
422 | if (arg_filter_partitions_type == FILTER_PARTITIONS_NONE) | |
423 | return false; | |
424 | ||
d989dd76 | 425 | for (size_t i = 0; i < arg_n_filter_partitions; i++) |
81d1098b DDM |
426 | if (sd_id128_equal(p->type.uuid, arg_filter_partitions[i])) |
427 | return arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE; | |
428 | ||
429 | return arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE; | |
430 | } | |
431 | ||
8275334b | 432 | static bool partition_defer(const Partition *p) { |
7d505753 DDM |
433 | assert(p); |
434 | ||
8275334b DDM |
435 | for (size_t i = 0; i < arg_n_defer_partitions; i++) |
436 | if (sd_id128_equal(p->type.uuid, arg_defer_partitions[i])) | |
7d505753 DDM |
437 | return true; |
438 | ||
439 | return false; | |
440 | } | |
441 | ||
e594a3b1 LP |
442 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { |
443 | if (!p) | |
444 | return NULL; | |
445 | ||
446 | LIST_REMOVE(partitions, context->partitions, p); | |
447 | ||
448 | assert(context->n_partitions > 0); | |
449 | context->n_partitions--; | |
450 | ||
451 | return partition_free(p); | |
452 | } | |
453 | ||
454 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
455 | ||
456 | static Context *context_new(sd_id128_t seed) { | |
457 | Context *context; | |
458 | ||
459 | context = new(Context, 1); | |
460 | if (!context) | |
461 | return NULL; | |
462 | ||
463 | *context = (Context) { | |
464 | .start = UINT64_MAX, | |
465 | .end = UINT64_MAX, | |
466 | .total = UINT64_MAX, | |
467 | .seed = seed, | |
468 | }; | |
469 | ||
470 | return context; | |
471 | } | |
472 | ||
473 | static void context_free_free_areas(Context *context) { | |
474 | assert(context); | |
475 | ||
476 | for (size_t i = 0; i < context->n_free_areas; i++) | |
477 | free(context->free_areas[i]); | |
478 | ||
479 | context->free_areas = mfree(context->free_areas); | |
480 | context->n_free_areas = 0; | |
e594a3b1 LP |
481 | } |
482 | ||
483 | static Context *context_free(Context *context) { | |
484 | if (!context) | |
485 | return NULL; | |
486 | ||
487 | while (context->partitions) | |
488 | partition_unlink_and_free(context, context->partitions); | |
489 | assert(context->n_partitions == 0); | |
490 | ||
491 | context_free_free_areas(context); | |
492 | ||
493 | if (context->fdisk_context) | |
494 | fdisk_unref_context(context->fdisk_context); | |
495 | ||
cc751c75 | 496 | safe_close(context->backing_fd); |
db1d4e6b DDM |
497 | if (context->node_is_our_file) |
498 | unlink_and_free(context->node); | |
499 | else | |
500 | free(context->node); | |
cc751c75 | 501 | |
e594a3b1 LP |
502 | return mfree(context); |
503 | } | |
504 | ||
505 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
506 | ||
507 | static int context_add_free_area( | |
508 | Context *context, | |
509 | uint64_t size, | |
510 | Partition *after) { | |
511 | ||
512 | FreeArea *a; | |
513 | ||
514 | assert(context); | |
515 | assert(!after || !after->padding_area); | |
516 | ||
319a4f4b | 517 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
518 | return -ENOMEM; |
519 | ||
520 | a = new(FreeArea, 1); | |
521 | if (!a) | |
522 | return -ENOMEM; | |
523 | ||
524 | *a = (FreeArea) { | |
525 | .size = size, | |
526 | .after = after, | |
527 | }; | |
528 | ||
529 | context->free_areas[context->n_free_areas++] = a; | |
530 | ||
531 | if (after) | |
532 | after->padding_area = a; | |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
9ccceb9d YW |
537 | static void partition_drop_or_foreignize(Partition *p) { |
538 | if (!p || p->dropped || PARTITION_IS_FOREIGN(p)) | |
539 | return; | |
540 | ||
541 | if (PARTITION_EXISTS(p)) { | |
542 | log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.", | |
543 | strna(p->current_label ?: p->new_label), p->priority); | |
544 | ||
545 | /* Handle the partition as foreign. Do not set dropped flag. */ | |
546 | partition_foreignize(p); | |
547 | } else { | |
548 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", | |
549 | p->definition_path, p->priority); | |
550 | ||
551 | p->dropped = true; | |
552 | p->allocated_to_area = NULL; | |
553 | } | |
554 | } | |
555 | ||
556 | static bool context_drop_or_foreignize_one_priority(Context *context) { | |
e594a3b1 | 557 | int32_t priority = 0; |
e594a3b1 LP |
558 | |
559 | LIST_FOREACH(partitions, p, context->partitions) { | |
560 | if (p->dropped) | |
561 | continue; | |
e594a3b1 | 562 | |
9ccceb9d | 563 | priority = MAX(priority, p->priority); |
e594a3b1 LP |
564 | } |
565 | ||
566 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
567 | * least one existing priority */ | |
9ccceb9d | 568 | if (priority <= 0) |
e594a3b1 LP |
569 | return false; |
570 | ||
571 | LIST_FOREACH(partitions, p, context->partitions) { | |
572 | if (p->priority < priority) | |
573 | continue; | |
574 | ||
9ccceb9d | 575 | partition_drop_or_foreignize(p); |
b5b7879a DDM |
576 | |
577 | /* We ensure that all verity sibling partitions have the same priority, so it's safe | |
578 | * to drop all siblings here as well. */ | |
579 | ||
9ccceb9d YW |
580 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) |
581 | partition_drop_or_foreignize(p->siblings[mode]); | |
e594a3b1 LP |
582 | } |
583 | ||
584 | return true; | |
585 | } | |
586 | ||
a80701e6 | 587 | static uint64_t partition_min_size(const Context *context, const Partition *p) { |
e594a3b1 LP |
588 | uint64_t sz; |
589 | ||
994b3031 LP |
590 | assert(context); |
591 | assert(p); | |
592 | ||
e594a3b1 LP |
593 | /* Calculate the disk space we really need at minimum for this partition. If the partition already |
594 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
595 | * than 4K. |
596 | * | |
597 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
598 | |
599 | if (PARTITION_IS_FOREIGN(p)) { | |
600 | /* Don't allow changing size of partitions not managed by us */ | |
601 | assert(p->current_size != UINT64_MAX); | |
602 | return p->current_size; | |
603 | } | |
604 | ||
b456191d DDM |
605 | if (p->verity == VERITY_SIG) |
606 | return VERITY_SIG_SIZE; | |
607 | ||
fb08381c | 608 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 609 | |
170c9823 LP |
610 | if (!PARTITION_EXISTS(p)) { |
611 | uint64_t d = 0; | |
612 | ||
889914ef | 613 | if (p->encrypt != ENCRYPT_OFF) |
48a09a8f | 614 | d += round_up_size(LUKS2_METADATA_KEEP_FREE, context->grain_size); |
170c9823 LP |
615 | |
616 | if (p->copy_blocks_size != UINT64_MAX) | |
994b3031 | 617 | d += round_up_size(p->copy_blocks_size, context->grain_size); |
889914ef | 618 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
619 | uint64_t f; |
620 | ||
621 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
994b3031 LP |
622 | f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX; |
623 | d += f == UINT64_MAX ? context->grain_size : f; | |
170c9823 LP |
624 | } |
625 | ||
626 | if (d > sz) | |
627 | sz = d; | |
628 | } | |
757bc2e4 | 629 | |
994b3031 | 630 | return MAX(round_up_size(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, context->grain_size), sz); |
e594a3b1 LP |
631 | } |
632 | ||
994b3031 LP |
633 | static uint64_t partition_max_size(const Context *context, const Partition *p) { |
634 | uint64_t sm; | |
635 | ||
e594a3b1 LP |
636 | /* Calculate how large the partition may become at max. This is generally the configured maximum |
637 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
638 | * since we never want to shrink partitions. */ | |
639 | ||
994b3031 LP |
640 | assert(context); |
641 | assert(p); | |
642 | ||
e594a3b1 LP |
643 | if (PARTITION_IS_FOREIGN(p)) { |
644 | /* Don't allow changing size of partitions not managed by us */ | |
645 | assert(p->current_size != UINT64_MAX); | |
646 | return p->current_size; | |
647 | } | |
648 | ||
b456191d DDM |
649 | if (p->verity == VERITY_SIG) |
650 | return VERITY_SIG_SIZE; | |
651 | ||
822d9b9a YW |
652 | if (p->size_max == UINT64_MAX) |
653 | return UINT64_MAX; | |
654 | ||
994b3031 LP |
655 | sm = round_down_size(p->size_max, context->grain_size); |
656 | ||
e594a3b1 | 657 | if (p->current_size != UINT64_MAX) |
b0fbf90b | 658 | sm = MAX(p->current_size, sm); |
e594a3b1 | 659 | |
b0fbf90b | 660 | return MAX(partition_min_size(context, p), sm); |
e594a3b1 LP |
661 | } |
662 | ||
a801bb01 YW |
663 | static uint64_t partition_min_padding(const Partition *p) { |
664 | assert(p); | |
665 | return p->padding_min != UINT64_MAX ? p->padding_min : 0; | |
666 | } | |
667 | ||
668 | static uint64_t partition_max_padding(const Partition *p) { | |
669 | assert(p); | |
670 | return p->padding_max; | |
671 | } | |
672 | ||
994b3031 | 673 | static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) { |
e594a3b1 LP |
674 | uint64_t sz; |
675 | ||
676 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
677 | * takes user configured padding into account as well as any additional whitespace needed to align | |
678 | * the next partition to 4K again. */ | |
679 | ||
994b3031 LP |
680 | assert(context); |
681 | assert(p); | |
682 | ||
a801bb01 | 683 | sz = partition_min_size(context, p) + partition_min_padding(p); |
e594a3b1 LP |
684 | |
685 | if (PARTITION_EXISTS(p)) { | |
686 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
687 | assert(p->offset != UINT64_MAX); | |
994b3031 | 688 | return round_up_size(p->offset + sz, context->grain_size) - p->offset; |
e594a3b1 LP |
689 | } |
690 | ||
691 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
994b3031 | 692 | return round_up_size(sz, context->grain_size); |
e594a3b1 LP |
693 | } |
694 | ||
695 | static uint64_t free_area_available(const FreeArea *a) { | |
696 | assert(a); | |
697 | ||
698 | /* Determines how much of this free area is not allocated yet */ | |
699 | ||
700 | assert(a->size >= a->allocated); | |
701 | return a->size - a->allocated; | |
702 | } | |
703 | ||
58b06ac1 | 704 | static uint64_t free_area_current_end(Context *context, const FreeArea *a) { |
994b3031 LP |
705 | assert(context); |
706 | assert(a); | |
707 | ||
58b06ac1 YW |
708 | if (!a->after) |
709 | return free_area_available(a); | |
e594a3b1 | 710 | |
58b06ac1 YW |
711 | assert(a->after->offset != UINT64_MAX); |
712 | assert(a->after->current_size != UINT64_MAX); | |
e594a3b1 | 713 | |
58b06ac1 YW |
714 | /* Calculate where the free area ends, based on the offset of the partition preceding it. */ |
715 | return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a); | |
716 | } | |
e594a3b1 | 717 | |
58b06ac1 YW |
718 | static uint64_t free_area_min_end(Context *context, const FreeArea *a) { |
719 | assert(context); | |
720 | assert(a); | |
e594a3b1 | 721 | |
58b06ac1 YW |
722 | if (!a->after) |
723 | return 0; | |
e594a3b1 | 724 | |
58b06ac1 YW |
725 | assert(a->after->offset != UINT64_MAX); |
726 | assert(a->after->current_size != UINT64_MAX); | |
1052a114 | 727 | |
58b06ac1 YW |
728 | /* Calculate where the partition would end when we give it as much as it needs. */ |
729 | return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size); | |
730 | } | |
731 | ||
732 | static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) { | |
733 | assert(context); | |
734 | assert(a); | |
735 | ||
736 | /* Similar to free_area_available(), but takes into account that the required size and padding of the | |
737 | * preceding partition is honoured. */ | |
e594a3b1 | 738 | |
58b06ac1 | 739 | return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a)); |
e594a3b1 LP |
740 | } |
741 | ||
994b3031 LP |
742 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) { |
743 | assert(context); | |
744 | ||
745 | return CMP(free_area_available_for_new_partitions(context, *a), | |
746 | free_area_available_for_new_partitions(context, *b)); | |
e594a3b1 LP |
747 | } |
748 | ||
994b3031 LP |
749 | static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) { |
750 | assert(context); | |
e594a3b1 | 751 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ |
184cf99a | 752 | assert(amount <= total); |
994b3031 | 753 | return LESS_BY(total, round_up_size(amount, context->grain_size)); |
e594a3b1 LP |
754 | } |
755 | ||
756 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
757 | assert(amount <= total); | |
758 | return total - amount; | |
759 | } | |
760 | ||
14a4c4ed | 761 | static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) { |
e594a3b1 LP |
762 | assert(context); |
763 | ||
f39cf264 YW |
764 | /* This may be called multiple times. Reset previous assignments. */ |
765 | for (size_t i = 0; i < context->n_free_areas; i++) | |
766 | context->free_areas[i]->allocated = 0; | |
767 | ||
14a4c4ed | 768 | /* Sort free areas by size, putting smallest first */ |
994b3031 | 769 | typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context); |
e594a3b1 | 770 | |
14a4c4ed LP |
771 | /* In any case return size of the largest free area (i.e. not the size of all free areas |
772 | * combined!) */ | |
773 | if (ret_largest_free_area) | |
774 | *ret_largest_free_area = | |
775 | context->n_free_areas == 0 ? 0 : | |
994b3031 | 776 | free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]); |
14a4c4ed | 777 | |
cdbcc339 YW |
778 | /* Check that each existing partition can fit its area. */ |
779 | for (size_t i = 0; i < context->n_free_areas; i++) | |
780 | if (free_area_current_end(context, context->free_areas[i]) < | |
781 | free_area_min_end(context, context->free_areas[i])) | |
782 | return false; | |
783 | ||
14a4c4ed | 784 | /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */ |
e594a3b1 LP |
785 | LIST_FOREACH(partitions, p, context->partitions) { |
786 | bool fits = false; | |
787 | uint64_t required; | |
788 | FreeArea *a = NULL; | |
789 | ||
790 | /* Skip partitions we already dropped or that already exist */ | |
791 | if (p->dropped || PARTITION_EXISTS(p)) | |
792 | continue; | |
793 | ||
e594a3b1 | 794 | /* How much do we need to fit? */ |
994b3031 LP |
795 | required = partition_min_size_with_padding(context, p); |
796 | assert(required % context->grain_size == 0); | |
e594a3b1 LP |
797 | |
798 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
799 | a = context->free_areas[i]; | |
800 | ||
994b3031 | 801 | if (free_area_available_for_new_partitions(context, a) >= required) { |
e594a3b1 LP |
802 | fits = true; |
803 | break; | |
804 | } | |
805 | } | |
806 | ||
807 | if (!fits) | |
808 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
809 | ||
810 | /* Assign the partition to this free area */ | |
811 | p->allocated_to_area = a; | |
812 | ||
813 | /* Budget the minimal partition size */ | |
814 | a->allocated += required; | |
815 | } | |
816 | ||
817 | return true; | |
818 | } | |
819 | ||
820 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
821 | uint64_t weight_sum = 0; | |
e594a3b1 LP |
822 | |
823 | assert(context); | |
824 | assert(a); | |
825 | assert(ret); | |
826 | ||
827 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
828 | ||
829 | LIST_FOREACH(partitions, p, context->partitions) { | |
830 | if (p->padding_area != a && p->allocated_to_area != a) | |
831 | continue; | |
832 | ||
833 | if (p->weight > UINT64_MAX - weight_sum) | |
834 | goto overflow_sum; | |
835 | weight_sum += p->weight; | |
836 | ||
837 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
838 | goto overflow_sum; | |
839 | weight_sum += p->padding_weight; | |
840 | } | |
841 | ||
842 | *ret = weight_sum; | |
843 | return 0; | |
844 | ||
845 | overflow_sum: | |
846 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64bit range, refusing."); | |
847 | } | |
848 | ||
0245e15a | 849 | static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) { |
e594a3b1 | 850 | assert(weight_sum >= weight); |
e594a3b1 | 851 | |
0245e15a YW |
852 | for (;;) { |
853 | if (weight == 0) | |
854 | return 0; | |
855 | if (weight == weight_sum) | |
856 | return value; | |
857 | if (value <= UINT64_MAX / weight) | |
858 | return value * weight / weight_sum; | |
859 | ||
860 | /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the | |
861 | * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down: | |
862 | * - the sum of scale_by_weight() for all weights must not be larger than the input value, | |
863 | * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */ | |
864 | weight_sum = DIV_ROUND_UP(weight_sum, 2); | |
865 | weight /= 2; | |
e594a3b1 | 866 | } |
e594a3b1 LP |
867 | } |
868 | ||
869 | typedef enum GrowPartitionPhase { | |
bf99aed6 YW |
870 | /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */ |
871 | PHASE_FOREIGN, | |
872 | ||
e594a3b1 LP |
873 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ |
874 | PHASE_OVERCHARGE, | |
875 | ||
876 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
877 | PHASE_UNDERCHARGE, | |
878 | ||
879 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
880 | PHASE_DISTRIBUTE, | |
ae0613c6 LP |
881 | |
882 | _GROW_PARTITION_PHASE_MAX, | |
e594a3b1 LP |
883 | } GrowPartitionPhase; |
884 | ||
0245e15a | 885 | static bool context_grow_partitions_phase( |
e594a3b1 LP |
886 | Context *context, |
887 | FreeArea *a, | |
888 | GrowPartitionPhase phase, | |
889 | uint64_t *span, | |
890 | uint64_t *weight_sum) { | |
891 | ||
2a503ad2 YW |
892 | bool try_again = false; |
893 | ||
e594a3b1 LP |
894 | assert(context); |
895 | assert(a); | |
0245e15a YW |
896 | assert(span); |
897 | assert(weight_sum); | |
e594a3b1 LP |
898 | |
899 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
900 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
901 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
902 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
903 | LIST_FOREACH(partitions, p, context->partitions) { | |
904 | ||
905 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 906 | * preceding it, or allocated into it */ |
e594a3b1 LP |
907 | if (p->allocated_to_area != a && p->padding_area != a) |
908 | continue; | |
909 | ||
910 | if (p->new_size == UINT64_MAX) { | |
e594a3b1 | 911 | uint64_t share, rsz, xsz; |
2a503ad2 | 912 | bool charge = false; |
e594a3b1 LP |
913 | |
914 | /* Calculate how much this space this partition needs if everyone would get | |
915 | * the weight based share */ | |
0245e15a | 916 | share = scale_by_weight(*span, p->weight, *weight_sum); |
e594a3b1 | 917 | |
994b3031 LP |
918 | rsz = partition_min_size(context, p); |
919 | xsz = partition_max_size(context, p); | |
e594a3b1 | 920 | |
bf99aed6 YW |
921 | if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) { |
922 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
923 | ||
924 | p->new_size = p->current_size; | |
925 | charge = true; | |
926 | ||
927 | } else if (phase == PHASE_OVERCHARGE && rsz > share) { | |
e594a3b1 LP |
928 | /* This partition needs more than its calculated share. Let's assign |
929 | * it that, and take this partition out of all calculations and start | |
930 | * again. */ | |
931 | ||
932 | p->new_size = rsz; | |
933 | charge = try_again = true; | |
934 | ||
822d9b9a | 935 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
e594a3b1 LP |
936 | /* This partition accepts less than its calculated |
937 | * share. Let's assign it that, and take this partition out | |
938 | * of all calculations and start again. */ | |
939 | ||
940 | p->new_size = xsz; | |
941 | charge = try_again = true; | |
942 | ||
943 | } else if (phase == PHASE_DISTRIBUTE) { | |
944 | /* This partition can accept its calculated share. Let's | |
945 | * assign it. There's no need to restart things here since | |
946 | * assigning this shouldn't impact the shares of the other | |
947 | * partitions. */ | |
948 | ||
d7c46b5e YW |
949 | assert(share >= rsz); |
950 | p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
951 | charge = true; |
952 | } | |
953 | ||
954 | if (charge) { | |
994b3031 | 955 | *span = charge_size(context, *span, p->new_size); |
e594a3b1 LP |
956 | *weight_sum = charge_weight(*weight_sum, p->weight); |
957 | } | |
e594a3b1 LP |
958 | } |
959 | ||
960 | if (p->new_padding == UINT64_MAX) { | |
a801bb01 | 961 | uint64_t share, rsz, xsz; |
2a503ad2 | 962 | bool charge = false; |
e594a3b1 | 963 | |
0245e15a | 964 | share = scale_by_weight(*span, p->padding_weight, *weight_sum); |
e594a3b1 | 965 | |
a801bb01 YW |
966 | rsz = partition_min_padding(p); |
967 | xsz = partition_max_padding(p); | |
968 | ||
969 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
970 | p->new_padding = rsz; | |
e594a3b1 | 971 | charge = try_again = true; |
a801bb01 YW |
972 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
973 | p->new_padding = xsz; | |
e594a3b1 LP |
974 | charge = try_again = true; |
975 | } else if (phase == PHASE_DISTRIBUTE) { | |
d7c46b5e YW |
976 | assert(share >= rsz); |
977 | p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
978 | charge = true; |
979 | } | |
980 | ||
981 | if (charge) { | |
994b3031 | 982 | *span = charge_size(context, *span, p->new_padding); |
e594a3b1 LP |
983 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); |
984 | } | |
e594a3b1 LP |
985 | } |
986 | } | |
987 | ||
2a503ad2 | 988 | return !try_again; |
e594a3b1 LP |
989 | } |
990 | ||
19903a43 YW |
991 | static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) { |
992 | uint64_t m; | |
993 | ||
994 | assert(context); | |
995 | assert(a); | |
996 | assert(p); | |
997 | assert(span); | |
998 | ||
999 | if (*span == 0) | |
1000 | return; | |
1001 | ||
1002 | if (p->allocated_to_area != a) | |
1003 | return; | |
1004 | ||
1005 | if (PARTITION_IS_FOREIGN(p)) | |
1006 | return; | |
1007 | ||
1008 | assert(p->new_size != UINT64_MAX); | |
1009 | ||
1010 | /* Calculate new size and align. */ | |
1011 | m = round_down_size(p->new_size + *span, context->grain_size); | |
1012 | /* But ensure this doesn't shrink the size. */ | |
1013 | m = MAX(m, p->new_size); | |
1014 | /* And ensure this doesn't exceed the maximum size. */ | |
1015 | m = MIN(m, partition_max_size(context, p)); | |
1016 | ||
1017 | assert(m >= p->new_size); | |
1018 | ||
1019 | *span = charge_size(context, *span, m - p->new_size); | |
1020 | p->new_size = m; | |
1021 | } | |
1022 | ||
e594a3b1 LP |
1023 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { |
1024 | uint64_t weight_sum = 0, span; | |
1025 | int r; | |
1026 | ||
1027 | assert(context); | |
1028 | assert(a); | |
1029 | ||
1030 | r = context_sum_weights(context, a, &weight_sum); | |
1031 | if (r < 0) | |
1032 | return r; | |
1033 | ||
1034 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
1035 | span = a->size; | |
1036 | if (a->after) { | |
1037 | assert(a->after->offset != UINT64_MAX); | |
1038 | assert(a->after->current_size != UINT64_MAX); | |
1039 | ||
994b3031 | 1040 | span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset; |
e594a3b1 LP |
1041 | } |
1042 | ||
0245e15a YW |
1043 | for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;) |
1044 | if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum)) | |
1045 | phase++; /* go to the next phase */ | |
e594a3b1 | 1046 | |
162392b7 | 1047 | /* We still have space left over? Donate to preceding partition if we have one */ |
19903a43 YW |
1048 | if (span > 0 && a->after) |
1049 | context_grow_partition_one(context, a, a->after, &span); | |
e594a3b1 | 1050 | |
162392b7 | 1051 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 | 1052 | * size limit), then let's donate it to whoever wants it. */ |
03677889 | 1053 | if (span > 0) |
e594a3b1 | 1054 | LIST_FOREACH(partitions, p, context->partitions) { |
19903a43 | 1055 | context_grow_partition_one(context, a, p, &span); |
e594a3b1 LP |
1056 | if (span == 0) |
1057 | break; | |
1058 | } | |
e594a3b1 | 1059 | |
162392b7 | 1060 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
1061 | if (span > 0 && a->after) { |
1062 | assert(a->after->new_padding != UINT64_MAX); | |
1063 | a->after->new_padding += span; | |
1064 | } | |
1065 | ||
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | static int context_grow_partitions(Context *context) { | |
e594a3b1 LP |
1070 | int r; |
1071 | ||
1072 | assert(context); | |
1073 | ||
1074 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
1075 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
1076 | if (r < 0) | |
1077 | return r; | |
1078 | } | |
1079 | ||
1080 | /* All existing partitions that have no free space after them can't change size */ | |
1081 | LIST_FOREACH(partitions, p, context->partitions) { | |
1082 | if (p->dropped) | |
1083 | continue; | |
1084 | ||
1085 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
1086 | /* The algorithm above must have initialized this already */ | |
1087 | assert(p->new_size != UINT64_MAX); | |
1088 | continue; | |
1089 | } | |
1090 | ||
1091 | assert(p->new_size == UINT64_MAX); | |
1092 | p->new_size = p->current_size; | |
1093 | ||
1094 | assert(p->new_padding == UINT64_MAX); | |
1095 | p->new_padding = p->current_padding; | |
1096 | } | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | ||
00428745 | 1101 | static uint64_t find_first_unused_partno(Context *context) { |
e594a3b1 | 1102 | uint64_t partno = 0; |
e594a3b1 LP |
1103 | |
1104 | assert(context); | |
1105 | ||
5f59807d DDM |
1106 | for (partno = 0;; partno++) { |
1107 | bool found = false; | |
1108 | LIST_FOREACH(partitions, p, context->partitions) | |
1109 | if (p->partno != UINT64_MAX && p->partno == partno) | |
1110 | found = true; | |
1111 | if (!found) | |
1112 | break; | |
e594a3b1 LP |
1113 | } |
1114 | ||
00428745 DDM |
1115 | return partno; |
1116 | } | |
1117 | ||
1118 | static void context_place_partitions(Context *context) { | |
1119 | ||
1120 | assert(context); | |
1121 | ||
e594a3b1 LP |
1122 | for (size_t i = 0; i < context->n_free_areas; i++) { |
1123 | FreeArea *a = context->free_areas[i]; | |
2ea7eb00 FS |
1124 | _unused_ uint64_t left; |
1125 | uint64_t start; | |
e594a3b1 LP |
1126 | |
1127 | if (a->after) { | |
1128 | assert(a->after->offset != UINT64_MAX); | |
1129 | assert(a->after->new_size != UINT64_MAX); | |
1130 | assert(a->after->new_padding != UINT64_MAX); | |
1131 | ||
1132 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
1133 | } else | |
1134 | start = context->start; | |
1135 | ||
994b3031 | 1136 | start = round_up_size(start, context->grain_size); |
e594a3b1 LP |
1137 | left = a->size; |
1138 | ||
1139 | LIST_FOREACH(partitions, p, context->partitions) { | |
1140 | if (p->allocated_to_area != a) | |
1141 | continue; | |
1142 | ||
1143 | p->offset = start; | |
00428745 | 1144 | p->partno = find_first_unused_partno(context); |
e594a3b1 LP |
1145 | |
1146 | assert(left >= p->new_size); | |
1147 | start += p->new_size; | |
1148 | left -= p->new_size; | |
1149 | ||
1150 | assert(left >= p->new_padding); | |
1151 | start += p->new_padding; | |
1152 | left -= p->new_padding; | |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | ||
e594a3b1 LP |
1157 | static int config_parse_type( |
1158 | const char *unit, | |
1159 | const char *filename, | |
1160 | unsigned line, | |
1161 | const char *section, | |
1162 | unsigned section_line, | |
1163 | const char *lvalue, | |
1164 | int ltype, | |
1165 | const char *rvalue, | |
1166 | void *data, | |
1167 | void *userdata) { | |
1168 | ||
22e932f4 | 1169 | GptPartitionType *type = ASSERT_PTR(data); |
e594a3b1 LP |
1170 | int r; |
1171 | ||
1172 | assert(rvalue); | |
e594a3b1 | 1173 | |
22e932f4 | 1174 | r = gpt_partition_type_from_string(rvalue, type); |
e594a3b1 LP |
1175 | if (r < 0) |
1176 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
1177 | ||
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | static int config_parse_label( | |
1182 | const char *unit, | |
1183 | const char *filename, | |
1184 | unsigned line, | |
1185 | const char *section, | |
1186 | unsigned section_line, | |
1187 | const char *lvalue, | |
1188 | int ltype, | |
1189 | const char *rvalue, | |
1190 | void *data, | |
1191 | void *userdata) { | |
1192 | ||
e031166e | 1193 | _cleanup_free_ char *resolved = NULL; |
99534007 | 1194 | char **label = ASSERT_PTR(data); |
e594a3b1 LP |
1195 | int r; |
1196 | ||
1197 | assert(rvalue); | |
e594a3b1 | 1198 | |
be9ce018 LP |
1199 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
1200 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
1201 | ||
de61a04b | 1202 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved); |
e031166e | 1203 | if (r < 0) { |
e459258f | 1204 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
1205 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
1210 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1211 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
1212 | return 0; | |
1213 | } | |
1214 | ||
22a0a36e LP |
1215 | r = gpt_partition_label_valid(resolved); |
1216 | if (r < 0) { | |
1217 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1218 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
1219 | resolved, rvalue); | |
1220 | return 0; | |
1221 | } | |
1222 | if (!r) { | |
e594a3b1 | 1223 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
1224 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
1225 | resolved, rvalue); | |
e594a3b1 LP |
1226 | return 0; |
1227 | } | |
1228 | ||
e031166e | 1229 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1230 | return 0; |
1231 | } | |
1232 | ||
1233 | static int config_parse_weight( | |
1234 | const char *unit, | |
1235 | const char *filename, | |
1236 | unsigned line, | |
1237 | const char *section, | |
1238 | unsigned section_line, | |
1239 | const char *lvalue, | |
1240 | int ltype, | |
1241 | const char *rvalue, | |
1242 | void *data, | |
1243 | void *userdata) { | |
1244 | ||
f126038f | 1245 | uint32_t *w = ASSERT_PTR(data), v; |
e594a3b1 LP |
1246 | int r; |
1247 | ||
1248 | assert(rvalue); | |
e594a3b1 LP |
1249 | |
1250 | r = safe_atou32(rvalue, &v); | |
1251 | if (r < 0) { | |
1252 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1253 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1254 | return 0; | |
1255 | } | |
1256 | ||
1257 | if (v > 1000U*1000U) { | |
c8f3d767 | 1258 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1259 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1260 | return 0; | |
1261 | } | |
1262 | ||
f126038f | 1263 | *w = v; |
e594a3b1 LP |
1264 | return 0; |
1265 | } | |
1266 | ||
1267 | static int config_parse_size4096( | |
1268 | const char *unit, | |
1269 | const char *filename, | |
1270 | unsigned line, | |
1271 | const char *section, | |
1272 | unsigned section_line, | |
1273 | const char *lvalue, | |
1274 | int ltype, | |
1275 | const char *rvalue, | |
1276 | void *data, | |
1277 | void *userdata) { | |
1278 | ||
1279 | uint64_t *sz = data, parsed; | |
1280 | int r; | |
1281 | ||
1282 | assert(rvalue); | |
1283 | assert(data); | |
1284 | ||
1285 | r = parse_size(rvalue, 1024, &parsed); | |
1286 | if (r < 0) | |
c8f3d767 | 1287 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1288 | "Failed to parse size value: %s", rvalue); |
1289 | ||
1290 | if (ltype > 0) | |
1291 | *sz = round_up_size(parsed, 4096); | |
1292 | else if (ltype < 0) | |
1293 | *sz = round_down_size(parsed, 4096); | |
1294 | else | |
1295 | *sz = parsed; | |
1296 | ||
1297 | if (*sz != parsed) | |
e2341b6b DT |
1298 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.", |
1299 | lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz); | |
e594a3b1 LP |
1300 | |
1301 | return 0; | |
1302 | } | |
1303 | ||
53171c04 LP |
1304 | static int config_parse_fstype( |
1305 | const char *unit, | |
1306 | const char *filename, | |
1307 | unsigned line, | |
1308 | const char *section, | |
1309 | unsigned section_line, | |
1310 | const char *lvalue, | |
1311 | int ltype, | |
1312 | const char *rvalue, | |
1313 | void *data, | |
1314 | void *userdata) { | |
1315 | ||
99534007 | 1316 | char **fstype = ASSERT_PTR(data); |
53171c04 LP |
1317 | |
1318 | assert(rvalue); | |
53171c04 LP |
1319 | |
1320 | if (!filename_is_valid(rvalue)) | |
1321 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1322 | "File system type is not valid, refusing: %s", rvalue); | |
1323 | ||
1324 | return free_and_strdup_warn(fstype, rvalue); | |
1325 | } | |
1326 | ||
8a794850 LP |
1327 | static int config_parse_copy_files( |
1328 | const char *unit, | |
1329 | const char *filename, | |
1330 | unsigned line, | |
1331 | const char *section, | |
1332 | unsigned section_line, | |
1333 | const char *lvalue, | |
1334 | int ltype, | |
1335 | const char *rvalue, | |
1336 | void *data, | |
1337 | void *userdata) { | |
1338 | ||
1339 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1340 | const char *p = rvalue, *target; | |
de98e6a7 | 1341 | char ***copy_files = ASSERT_PTR(data); |
8a794850 LP |
1342 | int r; |
1343 | ||
1344 | assert(rvalue); | |
8a794850 LP |
1345 | |
1346 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1347 | if (r < 0) | |
1348 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1349 | if (r == 0) { | |
1350 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1351 | return 0; | |
1352 | } | |
1353 | ||
1354 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1355 | if (r < 0) | |
1356 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1357 | if (r == 0) | |
1358 | target = source; /* No target, then it's the same as the source */ | |
1359 | else | |
1360 | target = buffer; | |
1361 | ||
1362 | if (!isempty(p)) | |
1363 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1364 | ||
de61a04b | 1365 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source); |
8a794850 LP |
1366 | if (r < 0) { |
1367 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1368 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1369 | return 0; | |
1370 | } | |
1371 | ||
0ade2213 LP |
1372 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1373 | if (r < 0) | |
8a794850 | 1374 | return 0; |
8a794850 | 1375 | |
de61a04b | 1376 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target); |
8a794850 LP |
1377 | if (r < 0) { |
1378 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1379 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1380 | return 0; | |
1381 | } | |
1382 | ||
0ade2213 LP |
1383 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1384 | if (r < 0) | |
8a794850 | 1385 | return 0; |
8a794850 | 1386 | |
de98e6a7 | 1387 | r = strv_consume_pair(copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); |
8a794850 LP |
1388 | if (r < 0) |
1389 | return log_oom(); | |
1390 | ||
1391 | return 0; | |
1392 | } | |
1393 | ||
a9af8276 DDM |
1394 | static int config_parse_exclude_files( |
1395 | const char *unit, | |
1396 | const char *filename, | |
1397 | unsigned line, | |
1398 | const char *section, | |
1399 | unsigned section_line, | |
1400 | const char *lvalue, | |
1401 | int ltype, | |
1402 | const char *rvalue, | |
1403 | void *data, | |
1404 | void *userdata) { | |
1405 | _cleanup_free_ char *resolved = NULL; | |
1406 | char ***exclude_files = ASSERT_PTR(data); | |
1407 | int r; | |
1408 | ||
1409 | if (isempty(rvalue)) { | |
1410 | *exclude_files = strv_free(*exclude_files); | |
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved); | |
1415 | if (r < 0) { | |
1416 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1417 | "Failed to expand specifiers in ExcludeFiles= path, ignoring: %s", rvalue); | |
1418 | return 0; | |
1419 | } | |
1420 | ||
1421 | r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
8a794850 | 1422 | if (r < 0) |
a9af8276 DDM |
1423 | return 0; |
1424 | ||
1425 | if (strv_consume(exclude_files, TAKE_PTR(resolved)) < 0) | |
8a794850 LP |
1426 | return log_oom(); |
1427 | ||
1428 | return 0; | |
1429 | } | |
1430 | ||
5c08da58 LP |
1431 | static int config_parse_copy_blocks( |
1432 | const char *unit, | |
1433 | const char *filename, | |
1434 | unsigned line, | |
1435 | const char *section, | |
1436 | unsigned section_line, | |
1437 | const char *lvalue, | |
1438 | int ltype, | |
1439 | const char *rvalue, | |
1440 | void *data, | |
1441 | void *userdata) { | |
1442 | ||
1443 | _cleanup_free_ char *d = NULL; | |
99534007 | 1444 | Partition *partition = ASSERT_PTR(data); |
5c08da58 LP |
1445 | int r; |
1446 | ||
1447 | assert(rvalue); | |
5c08da58 LP |
1448 | |
1449 | if (isempty(rvalue)) { | |
1450 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1451 | partition->copy_blocks_auto = false; | |
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | if (streq(rvalue, "auto")) { | |
1456 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1457 | partition->copy_blocks_auto = true; | |
585c5c75 | 1458 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1459 | return 0; |
1460 | } | |
1461 | ||
de61a04b | 1462 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
5c08da58 LP |
1463 | if (r < 0) { |
1464 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1465 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1466 | return 0; | |
1467 | } | |
1468 | ||
1469 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1470 | if (r < 0) | |
1471 | return 0; | |
1472 | ||
1473 | free_and_replace(partition->copy_blocks_path, d); | |
1474 | partition->copy_blocks_auto = false; | |
585c5c75 | 1475 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1476 | return 0; |
1477 | } | |
1478 | ||
d83d8048 LP |
1479 | static int config_parse_make_dirs( |
1480 | const char *unit, | |
1481 | const char *filename, | |
1482 | unsigned line, | |
1483 | const char *section, | |
1484 | unsigned section_line, | |
1485 | const char *lvalue, | |
1486 | int ltype, | |
1487 | const char *rvalue, | |
1488 | void *data, | |
1489 | void *userdata) { | |
1490 | ||
99534007 DT |
1491 | Partition *partition = ASSERT_PTR(data); |
1492 | const char *p = ASSERT_PTR(rvalue); | |
d83d8048 LP |
1493 | int r; |
1494 | ||
d83d8048 LP |
1495 | for (;;) { |
1496 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1497 | ||
1498 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1499 | if (r == -ENOMEM) | |
1500 | return log_oom(); | |
1501 | if (r < 0) { | |
1502 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1503 | return 0; | |
1504 | } | |
1505 | if (r == 0) | |
1506 | return 0; | |
1507 | ||
de61a04b | 1508 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
d83d8048 LP |
1509 | if (r < 0) { |
1510 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1511 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1512 | continue; | |
1513 | } | |
1514 | ||
1515 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1516 | if (r < 0) | |
1517 | continue; | |
1518 | ||
1519 | r = strv_consume(&partition->make_directories, TAKE_PTR(d)); | |
1520 | if (r < 0) | |
1521 | return log_oom(); | |
1522 | } | |
1523 | } | |
1524 | ||
889914ef LP |
1525 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1526 | ||
e73309c5 LP |
1527 | static int config_parse_gpt_flags( |
1528 | const char *unit, | |
1529 | const char *filename, | |
1530 | unsigned line, | |
1531 | const char *section, | |
1532 | unsigned section_line, | |
1533 | const char *lvalue, | |
1534 | int ltype, | |
1535 | const char *rvalue, | |
1536 | void *data, | |
1537 | void *userdata) { | |
1538 | ||
99534007 | 1539 | uint64_t *gpt_flags = ASSERT_PTR(data); |
e73309c5 LP |
1540 | int r; |
1541 | ||
1542 | assert(rvalue); | |
e73309c5 LP |
1543 | |
1544 | r = safe_atou64(rvalue, gpt_flags); | |
1545 | if (r < 0) { | |
1546 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1547 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1548 | return 0; | |
1549 | } | |
1550 | ||
1551 | return 0; | |
1552 | } | |
1553 | ||
11749b61 DDM |
1554 | static int config_parse_uuid( |
1555 | const char *unit, | |
1556 | const char *filename, | |
1557 | unsigned line, | |
1558 | const char *section, | |
1559 | unsigned section_line, | |
1560 | const char *lvalue, | |
1561 | int ltype, | |
1562 | const char *rvalue, | |
1563 | void *data, | |
1564 | void *userdata) { | |
1565 | ||
1566 | Partition *partition = ASSERT_PTR(data); | |
1567 | int r; | |
1568 | ||
1569 | if (isempty(rvalue)) { | |
1570 | partition->new_uuid = SD_ID128_NULL; | |
1571 | partition->new_uuid_is_set = false; | |
1572 | return 0; | |
1573 | } | |
1574 | ||
1575 | if (streq(rvalue, "null")) { | |
1576 | partition->new_uuid = SD_ID128_NULL; | |
1577 | partition->new_uuid_is_set = true; | |
1578 | return 0; | |
1579 | } | |
1580 | ||
1581 | r = sd_id128_from_string(rvalue, &partition->new_uuid); | |
1582 | if (r < 0) { | |
1583 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue); | |
1584 | return 0; | |
1585 | } | |
1586 | ||
1587 | partition->new_uuid_is_set = true; | |
1588 | ||
1589 | return 0; | |
1590 | } | |
1591 | ||
b5b7879a | 1592 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF, "Invalid verity mode"); |
5c33b686 | 1593 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_minimize, minimize_mode, MinimizeMode, MINIMIZE_OFF, "Invalid minimize mode"); |
b5b7879a | 1594 | |
39fc0174 | 1595 | static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) { |
e594a3b1 LP |
1596 | |
1597 | ConfigTableItem table[] = { | |
a9af8276 DDM |
1598 | { "Partition", "Type", config_parse_type, 0, &p->type }, |
1599 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, | |
1600 | { "Partition", "UUID", config_parse_uuid, 0, p }, | |
1601 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, | |
1602 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1603 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1604 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1605 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1606 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1607 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1608 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1609 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1610 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1611 | { "Partition", "CopyFiles", config_parse_copy_files, 0, &p->copy_files }, | |
1612 | { "Partition", "ExcludeFiles", config_parse_exclude_files, 0, &p->exclude_files }, | |
1613 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, p }, | |
1614 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
1615 | { "Partition", "Verity", config_parse_verity, 0, &p->verity }, | |
1616 | { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key }, | |
1617 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, | |
1618 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
1619 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, | |
1620 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, | |
1621 | { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format }, | |
1622 | { "Partition", "Minimize", config_parse_minimize, 0, &p->minimize }, | |
e594a3b1 LP |
1623 | {} |
1624 | }; | |
1625 | int r; | |
39fc0174 RP |
1626 | _cleanup_free_ char *filename = NULL; |
1627 | const char* dropin_dirname; | |
e594a3b1 | 1628 | |
39fc0174 RP |
1629 | r = path_extract_filename(path, &filename); |
1630 | if (r < 0) | |
bef69ae8 | 1631 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); |
39fc0174 RP |
1632 | |
1633 | dropin_dirname = strjoina(filename, ".d"); | |
1634 | ||
1635 | r = config_parse_many( | |
1636 | STRV_MAKE_CONST(path), | |
1637 | conf_file_dirs, | |
1638 | dropin_dirname, | |
1639 | "Partition\0", | |
1640 | config_item_table_lookup, table, | |
1641 | CONFIG_PARSE_WARN, | |
1642 | p, | |
1643 | NULL, | |
1644 | &p->drop_in_files); | |
e594a3b1 LP |
1645 | if (r < 0) |
1646 | return r; | |
1647 | ||
7d505753 DDM |
1648 | if (partition_exclude(p)) |
1649 | return 0; | |
1650 | ||
e594a3b1 LP |
1651 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) |
1652 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1653 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1654 | ||
1655 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1656 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1657 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1658 | ||
22e932f4 | 1659 | if (sd_id128_is_null(p->type.uuid)) |
e594a3b1 LP |
1660 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1661 | "Type= not defined, refusing."); | |
1662 | ||
5c08da58 LP |
1663 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1664 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
53171c04 | 1665 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5c08da58 | 1666 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); |
53171c04 | 1667 | |
d83d8048 | 1668 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1669 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1670 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1671 | ||
5c08da58 | 1672 | 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 | 1673 | /* Pick "ext4" as file system if we are configured to copy files or encrypt the device */ |
8a794850 LP |
1674 | p->format = strdup("ext4"); |
1675 | if (!p->format) | |
1676 | return log_oom(); | |
1677 | } | |
1678 | ||
5c33b686 | 1679 | if (p->minimize != MINIMIZE_OFF && !p->format) |
c4a87b76 DDM |
1680 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1681 | "Minimize= can only be enabled if Format= is set"); | |
1682 | ||
5c33b686 DDM |
1683 | if (p->minimize == MINIMIZE_BEST && !fstype_is_ro(p->format)) |
1684 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1685 | "Minimize=best can only be used with read-only filesystems"); | |
1686 | ||
6d6cefad DDM |
1687 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && !mkfs_supports_root_option(p->format) && geteuid() != 0) |
1688 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EPERM), | |
1689 | "Need to be root to populate %s filesystems with CopyFiles=/MakeDirectories=", | |
1690 | p->format); | |
1691 | ||
0eb23798 DDM |
1692 | if (p->format && fstype_is_ro(p->format) && strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
1693 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1694 | "Cannot format %s filesystem without source files, refusing", p->format); | |
1695 | ||
b5b7879a DDM |
1696 | if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) { |
1697 | r = dlopen_cryptsetup(); | |
1698 | if (r < 0) | |
1699 | return log_syntax(NULL, LOG_ERR, path, 1, r, | |
1700 | "libcryptsetup not found, Verity=/Encrypt= are not supported: %m"); | |
1701 | } | |
1702 | ||
1703 | if (p->verity != VERITY_OFF && !p->verity_match_key) | |
1704 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1705 | "VerityMatchKey= must be set if Verity=%s", verity_mode_to_string(p->verity)); | |
1706 | ||
1707 | if (p->verity == VERITY_OFF && p->verity_match_key) | |
1708 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1709 | "VerityMatchKey= can only be set if Verity= is not \"%s\"", | |
1710 | verity_mode_to_string(p->verity)); | |
1711 | ||
b456191d DDM |
1712 | if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && |
1713 | (p->copy_files || p->copy_blocks_path || p->copy_blocks_auto || p->format || p->make_directories)) | |
b5b7879a DDM |
1714 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1715 | "CopyBlocks=/CopyFiles=/Format=/MakeDirectories= cannot be used with Verity=%s", | |
1716 | verity_mode_to_string(p->verity)); | |
1717 | ||
1718 | if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF) | |
1719 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1720 | "Encrypting verity hash/data partitions is not supported"); | |
1721 | ||
b456191d DDM |
1722 | if (p->verity == VERITY_SIG && !arg_private_key) |
1723 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1724 | "Verity signature partition requested but no private key provided (--private-key=)"); | |
1725 | ||
1726 | if (p->verity == VERITY_SIG && !arg_certificate) | |
1727 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
ba4a5eff | 1728 | "Verity signature partition requested but no PEM certificate provided (--certificate=)"); |
b456191d DDM |
1729 | |
1730 | if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX)) | |
1731 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1732 | "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s", | |
1733 | verity_mode_to_string(p->verity)); | |
1734 | ||
e73309c5 | 1735 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
c1979cd8 | 1736 | if (IN_SET(p->type.designator, PARTITION_ROOT_VERITY, PARTITION_USR_VERITY) && p->read_only < 0) |
e73309c5 LP |
1737 | p->read_only = true; |
1738 | ||
1c41c1dc | 1739 | /* Default to "growfs" on, unless read-only */ |
22e932f4 | 1740 | if (gpt_partition_type_knows_growfs(p->type) && |
1c41c1dc LP |
1741 | p->read_only <= 0) |
1742 | p->growfs = true; | |
1743 | ||
4cee8333 DDM |
1744 | if (!p->split_name_format) { |
1745 | char *s = strdup("%t"); | |
1746 | if (!s) | |
1747 | return log_oom(); | |
1748 | ||
1749 | p->split_name_format = s; | |
1750 | } else if (streq(p->split_name_format, "-")) | |
1751 | p->split_name_format = mfree(p->split_name_format); | |
1752 | ||
7d505753 | 1753 | return 1; |
e594a3b1 LP |
1754 | } |
1755 | ||
b5b7879a DDM |
1756 | static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) { |
1757 | Partition *s = NULL; | |
1758 | ||
1759 | assert(p); | |
1760 | assert(p->verity != VERITY_OFF); | |
1761 | assert(p->verity_match_key); | |
1762 | assert(mode != VERITY_OFF); | |
1763 | assert(p->verity != mode); | |
1764 | assert(ret); | |
1765 | ||
1766 | /* Try to find the matching sibling partition of the given type for a verity partition. For a data | |
af3d3873 YW |
1767 | * partition, this is the corresponding hash partition with the same verity name (and vice versa for |
1768 | * the hash partition). */ | |
b5b7879a DDM |
1769 | |
1770 | LIST_FOREACH(partitions, q, context->partitions) { | |
1771 | if (p == q) | |
1772 | continue; | |
1773 | ||
1774 | if (q->verity != mode) | |
1775 | continue; | |
1776 | ||
1777 | assert(q->verity_match_key); | |
1778 | ||
1779 | if (!streq(p->verity_match_key, q->verity_match_key)) | |
1780 | continue; | |
1781 | ||
1782 | if (s) | |
1783 | return -ENOTUNIQ; | |
1784 | ||
1785 | s = q; | |
1786 | } | |
1787 | ||
1788 | if (!s) | |
1789 | return -ENXIO; | |
1790 | ||
1791 | *ret = s; | |
1792 | ||
1793 | return 0; | |
1794 | } | |
1795 | ||
e594a3b1 LP |
1796 | static int context_read_definitions( |
1797 | Context *context, | |
224c853f | 1798 | char **directories, |
e594a3b1 LP |
1799 | const char *root) { |
1800 | ||
1801 | _cleanup_strv_free_ char **files = NULL; | |
1802 | Partition *last = NULL; | |
e594a3b1 | 1803 | int r; |
39fc0174 | 1804 | const char *const *dirs; |
e594a3b1 LP |
1805 | |
1806 | assert(context); | |
1807 | ||
224c853f | 1808 | dirs = (const char* const*) (directories ?: CONF_PATHS_STRV("repart.d")); |
39fc0174 | 1809 | |
224c853f | 1810 | r = conf_files_list_strv(&files, ".conf", directories ? NULL : root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs); |
e594a3b1 LP |
1811 | if (r < 0) |
1812 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
1813 | ||
1814 | STRV_FOREACH(f, files) { | |
1815 | _cleanup_(partition_freep) Partition *p = NULL; | |
1816 | ||
1817 | p = partition_new(); | |
1818 | if (!p) | |
1819 | return log_oom(); | |
1820 | ||
1821 | p->definition_path = strdup(*f); | |
1822 | if (!p->definition_path) | |
1823 | return log_oom(); | |
1824 | ||
39fc0174 | 1825 | r = partition_read_definition(p, *f, dirs); |
e594a3b1 LP |
1826 | if (r < 0) |
1827 | return r; | |
7d505753 DDM |
1828 | if (r == 0) |
1829 | continue; | |
e594a3b1 LP |
1830 | |
1831 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
1832 | last = TAKE_PTR(p); | |
1833 | context->n_partitions++; | |
1834 | } | |
1835 | ||
b5b7879a DDM |
1836 | /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */ |
1837 | ||
1838 | LIST_FOREACH(partitions, p, context->partitions) { | |
1839 | if (p->verity == VERITY_OFF) | |
1840 | continue; | |
1841 | ||
1842 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
b456191d | 1843 | Partition *q = NULL; |
b5b7879a DDM |
1844 | |
1845 | if (p->verity == mode) | |
1846 | continue; | |
1847 | ||
1848 | if (p->siblings[mode]) | |
1849 | continue; | |
1850 | ||
1851 | r = find_verity_sibling(context, p, mode, &q); | |
8e52ed02 DDM |
1852 | if (r == -ENXIO) { |
1853 | if (mode != VERITY_SIG) | |
1854 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1855 | "Missing verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1856 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
1857 | } else if (r == -ENOTUNIQ) | |
b5b7879a DDM |
1858 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), |
1859 | "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s", | |
1860 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
8e52ed02 DDM |
1861 | else if (r < 0) |
1862 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r, | |
1863 | "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1864 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
b5b7879a | 1865 | |
b456191d DDM |
1866 | if (q) { |
1867 | if (q->priority != p->priority) | |
1868 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1869 | "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s", | |
1870 | p->priority, q->priority, p->verity_match_key); | |
b5b7879a | 1871 | |
b456191d DDM |
1872 | p->siblings[mode] = q; |
1873 | } | |
b5b7879a DDM |
1874 | } |
1875 | } | |
1876 | ||
e594a3b1 LP |
1877 | return 0; |
1878 | } | |
1879 | ||
e594a3b1 LP |
1880 | static int determine_current_padding( |
1881 | struct fdisk_context *c, | |
1882 | struct fdisk_table *t, | |
1883 | struct fdisk_partition *p, | |
994b3031 LP |
1884 | uint64_t secsz, |
1885 | uint64_t grainsz, | |
e594a3b1 LP |
1886 | uint64_t *ret) { |
1887 | ||
1888 | size_t n_partitions; | |
1889 | uint64_t offset, next = UINT64_MAX; | |
1890 | ||
1891 | assert(c); | |
1892 | assert(t); | |
1893 | assert(p); | |
1894 | ||
1895 | if (!fdisk_partition_has_end(p)) | |
1896 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1897 | ||
1898 | offset = fdisk_partition_get_end(p); | |
994b3031 LP |
1899 | assert(offset < UINT64_MAX / secsz); |
1900 | offset *= secsz; | |
e594a3b1 LP |
1901 | |
1902 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 1903 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 LP |
1904 | struct fdisk_partition *q; |
1905 | uint64_t start; | |
1906 | ||
1907 | q = fdisk_table_get_partition(t, i); | |
1908 | if (!q) | |
1909 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1910 | ||
1911 | if (fdisk_partition_is_used(q) <= 0) | |
1912 | continue; | |
1913 | ||
1914 | if (!fdisk_partition_has_start(q)) | |
1915 | continue; | |
1916 | ||
1917 | start = fdisk_partition_get_start(q); | |
994b3031 LP |
1918 | assert(start < UINT64_MAX / secsz); |
1919 | start *= secsz; | |
e594a3b1 LP |
1920 | |
1921 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1922 | next = start; | |
1923 | } | |
1924 | ||
1925 | if (next == UINT64_MAX) { | |
1926 | /* No later partition? In that case check the end of the usable area */ | |
1927 | next = fdisk_get_last_lba(c); | |
1928 | assert(next < UINT64_MAX); | |
1929 | next++; /* The last LBA is one sector before the end */ | |
1930 | ||
994b3031 LP |
1931 | assert(next < UINT64_MAX / secsz); |
1932 | next *= secsz; | |
e594a3b1 LP |
1933 | |
1934 | if (offset > next) | |
1935 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1936 | } | |
1937 | ||
1938 | assert(next >= offset); | |
994b3031 LP |
1939 | offset = round_up_size(offset, grainsz); |
1940 | next = round_down_size(next, grainsz); | |
e594a3b1 | 1941 | |
a6f44d61 | 1942 | *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */ |
e594a3b1 LP |
1943 | return 0; |
1944 | } | |
1945 | ||
1946 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { | |
1947 | _cleanup_free_ char *ids = NULL; | |
1948 | int r; | |
1949 | ||
1950 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
1951 | return -EINVAL; | |
1952 | ||
b7416360 | 1953 | ids = new(char, SD_ID128_UUID_STRING_MAX); |
e594a3b1 LP |
1954 | if (!ids) |
1955 | return -ENOMEM; | |
1956 | ||
b7416360 | 1957 | r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids)); |
e594a3b1 LP |
1958 | if (r < 0) |
1959 | return r; | |
1960 | ||
1961 | TAKE_PTR(ids); | |
1962 | return 0; | |
1963 | } | |
1964 | ||
1965 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
1966 | int r; | |
1967 | ||
1968 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
1969 | if (r < 0) | |
1970 | return r; | |
1971 | ||
1972 | r = fdisk_set_disklabel_id(c); | |
1973 | if (r < 0) | |
1974 | return r; | |
1975 | ||
1976 | return fdisk_set_ask(c, NULL, NULL); | |
1977 | } | |
1978 | ||
53171c04 | 1979 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 | 1980 | union { |
ade99252 | 1981 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
1982 | sd_id128_t id; |
1983 | } result; | |
1984 | ||
53171c04 | 1985 | assert(token); |
e594a3b1 LP |
1986 | assert(ret); |
1987 | ||
53171c04 LP |
1988 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
1989 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
1990 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
1991 | * the machine ID we don't want to leak. */ | |
e594a3b1 | 1992 | |
ade99252 | 1993 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md); |
e594a3b1 LP |
1994 | |
1995 | /* Take the first half, mark it as v4 UUID */ | |
1996 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
1997 | *ret = id128_make_v4_uuid(result.id); | |
1998 | return 0; | |
1999 | } | |
2000 | ||
37734dc6 YW |
2001 | static int context_open_and_lock_backing_fd(Context *context, const char *node) { |
2002 | _cleanup_close_ int fd = -EBADF; | |
2003 | ||
2004 | assert(context); | |
2005 | assert(node); | |
2006 | ||
2007 | if (context->backing_fd >= 0) | |
2008 | return 0; | |
2009 | ||
2010 | fd = open(node, O_RDONLY|O_CLOEXEC); | |
2011 | if (fd < 0) | |
2012 | return log_error_errno(errno, "Failed to open device '%s': %m", node); | |
2013 | ||
2014 | /* Tell udev not to interfere while we are processing the device */ | |
2015 | if (flock(fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
2016 | return log_error_errno(errno, "Failed to lock device '%s': %m", node); | |
2017 | ||
2018 | log_debug("Device %s opened and locked.", node); | |
2019 | context->backing_fd = TAKE_FD(fd); | |
2020 | return 1; | |
2021 | } | |
2022 | ||
cc751c75 | 2023 | static int context_load_partition_table(Context *context) { |
e594a3b1 LP |
2024 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
2025 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
2026 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
2027 | _cleanup_free_ char *disk_uuid_string = NULL; | |
2028 | bool from_scratch = false; | |
2029 | sd_id128_t disk_uuid; | |
2030 | size_t n_partitions; | |
994b3031 LP |
2031 | unsigned long secsz; |
2032 | uint64_t grainsz; | |
e594a3b1 LP |
2033 | int r; |
2034 | ||
2035 | assert(context); | |
170c9823 LP |
2036 | assert(!context->fdisk_context); |
2037 | assert(!context->free_areas); | |
2038 | assert(context->start == UINT64_MAX); | |
2039 | assert(context->end == UINT64_MAX); | |
2040 | assert(context->total == UINT64_MAX); | |
e594a3b1 | 2041 | |
e1878ef7 DDM |
2042 | c = fdisk_new_context(); |
2043 | if (!c) | |
2044 | return log_oom(); | |
2045 | ||
6c54e1d6 | 2046 | if (arg_sector_size > 0) |
e1878ef7 | 2047 | r = fdisk_save_user_sector_size(c, /* phy= */ 0, arg_sector_size); |
6c54e1d6 LP |
2048 | else { |
2049 | uint32_t ssz; | |
2050 | ||
37734dc6 YW |
2051 | r = context_open_and_lock_backing_fd(context, context->node); |
2052 | if (r < 0) | |
2053 | return r; | |
6c54e1d6 LP |
2054 | |
2055 | /* Auto-detect sector size if not specified. */ | |
2056 | r = probe_sector_size_prefer_ioctl(context->backing_fd, &ssz); | |
e1878ef7 | 2057 | if (r < 0) |
6c54e1d6 LP |
2058 | return log_error_errno(r, "Failed to probe sector size of '%s': %m", context->node); |
2059 | ||
2060 | r = fdisk_save_user_sector_size(c, /* phy= */ 0, ssz); | |
e1878ef7 | 2061 | } |
6c54e1d6 LP |
2062 | if (r < 0) |
2063 | return log_error_errno(r, "Failed to set sector size: %m"); | |
e1878ef7 | 2064 | |
a26f4a49 LP |
2065 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
2066 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
e1878ef7 DDM |
2067 | r = fdisk_assign_device( |
2068 | c, | |
2069 | context->backing_fd >= 0 ? FORMAT_PROC_FD_PATH(context->backing_fd) : context->node, | |
2070 | arg_dry_run); | |
170c9823 LP |
2071 | if (r == -EINVAL && arg_size_auto) { |
2072 | struct stat st; | |
2073 | ||
2074 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
2075 | * it if automatic sizing is requested. */ | |
2076 | ||
cc751c75 DDM |
2077 | if (context->backing_fd < 0) |
2078 | r = stat(context->node, &st); | |
170c9823 | 2079 | else |
cc751c75 | 2080 | r = fstat(context->backing_fd, &st); |
170c9823 | 2081 | if (r < 0) |
cc751c75 | 2082 | return log_error_errno(errno, "Failed to stat block device '%s': %m", context->node); |
170c9823 | 2083 | |
994b3031 LP |
2084 | if (S_ISREG(st.st_mode) && st.st_size == 0) { |
2085 | /* User the fallback values if we have no better idea */ | |
e1878ef7 | 2086 | context->sector_size = arg_sector_size ?: 512; |
994b3031 | 2087 | context->grain_size = 4096; |
170c9823 | 2088 | return /* from_scratch = */ true; |
994b3031 | 2089 | } |
170c9823 LP |
2090 | |
2091 | r = -EINVAL; | |
2092 | } | |
e594a3b1 | 2093 | if (r < 0) |
cc751c75 | 2094 | return log_error_errno(r, "Failed to open device '%s': %m", context->node); |
a26f4a49 | 2095 | |
cc751c75 | 2096 | if (context->backing_fd < 0) { |
a26f4a49 | 2097 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ |
37734dc6 YW |
2098 | r = context_open_and_lock_backing_fd(context, FORMAT_PROC_FD_PATH(fdisk_get_devfd(c))); |
2099 | if (r < 0) | |
2100 | return r; | |
25baae50 | 2101 | } |
e594a3b1 | 2102 | |
994b3031 LP |
2103 | /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the |
2104 | * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use | |
2105 | * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean | |
2106 | * the same thing universally. Also note that regardless what kind of sector size is in use we'll | |
2107 | * place partitions at multiples of 4K. */ | |
2108 | secsz = fdisk_get_sector_size(c); | |
2109 | ||
2110 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
983ce0b5 LP |
2111 | if (secsz < 512 || !ISPOWEROF2(secsz)) |
2112 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
994b3031 LP |
2113 | |
2114 | /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or | |
2115 | * larger */ | |
2116 | grainsz = secsz < 4096 ? 4096 : secsz; | |
2117 | ||
2118 | log_debug("Sector size of device is %lu bytes. Using grain size of %" PRIu64 ".", secsz, grainsz); | |
2119 | ||
e594a3b1 LP |
2120 | switch (arg_empty) { |
2121 | ||
2122 | case EMPTY_REFUSE: | |
2123 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
2124 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2125 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2126 | |
2127 | break; | |
2128 | ||
2129 | case EMPTY_REQUIRE: | |
2130 | /* Require an empty disk, refuse any existing partition table */ | |
2131 | r = fdisk_has_label(c); | |
2132 | if (r < 0) | |
cc751c75 | 2133 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 | 2134 | if (r > 0) |
cc751c75 | 2135 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", context->node); |
e594a3b1 LP |
2136 | |
2137 | from_scratch = true; | |
2138 | break; | |
2139 | ||
2140 | case EMPTY_ALLOW: | |
2141 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
2142 | r = fdisk_has_label(c); | |
2143 | if (r < 0) | |
cc751c75 | 2144 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 LP |
2145 | if (r > 0) { |
2146 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2147 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2148 | } else |
2149 | from_scratch = true; | |
2150 | ||
2151 | break; | |
2152 | ||
2153 | case EMPTY_FORCE: | |
a26f4a49 | 2154 | case EMPTY_CREATE: |
e594a3b1 LP |
2155 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
2156 | from_scratch = true; | |
2157 | break; | |
2158 | } | |
2159 | ||
2160 | if (from_scratch) { | |
e594a3b1 LP |
2161 | r = fdisk_create_disklabel(c, "gpt"); |
2162 | if (r < 0) | |
2163 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
2164 | ||
53171c04 | 2165 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2166 | if (r < 0) |
2167 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2168 | ||
2169 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
2170 | if (r < 0) | |
2171 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2172 | ||
2173 | goto add_initial_free_area; | |
2174 | } | |
2175 | ||
2176 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
2177 | if (r < 0) | |
2178 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
2179 | ||
2180 | r = sd_id128_from_string(disk_uuid_string, &disk_uuid); | |
2181 | if (r < 0) | |
2182 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
2183 | ||
2184 | if (sd_id128_is_null(disk_uuid)) { | |
53171c04 | 2185 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2186 | if (r < 0) |
2187 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2188 | ||
2189 | r = fdisk_set_disklabel_id(c); | |
2190 | if (r < 0) | |
2191 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2192 | } | |
2193 | ||
2194 | r = fdisk_get_partitions(c, &t); | |
2195 | if (r < 0) | |
2196 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
2197 | ||
2198 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 2199 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 | 2200 | _cleanup_free_ char *label_copy = NULL; |
03677889 | 2201 | Partition *last = NULL; |
e594a3b1 | 2202 | struct fdisk_partition *p; |
63b96eb9 | 2203 | const char *label; |
e594a3b1 LP |
2204 | uint64_t sz, start; |
2205 | bool found = false; | |
2206 | sd_id128_t ptid, id; | |
2207 | size_t partno; | |
2208 | ||
2209 | p = fdisk_table_get_partition(t, i); | |
2210 | if (!p) | |
2211 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
2212 | ||
2213 | if (fdisk_partition_is_used(p) <= 0) | |
2214 | continue; | |
2215 | ||
2216 | if (fdisk_partition_has_start(p) <= 0 || | |
2217 | fdisk_partition_has_size(p) <= 0 || | |
2218 | fdisk_partition_has_partno(p) <= 0) | |
2219 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
2220 | ||
63b96eb9 | 2221 | r = fdisk_partition_get_type_as_id128(p, &ptid); |
e594a3b1 | 2222 | if (r < 0) |
63b96eb9 | 2223 | return log_error_errno(r, "Failed to query partition type UUID: %m"); |
e594a3b1 | 2224 | |
02e32aa6 | 2225 | r = fdisk_partition_get_uuid_as_id128(p, &id); |
e594a3b1 | 2226 | if (r < 0) |
02e32aa6 | 2227 | return log_error_errno(r, "Failed to query partition UUID: %m"); |
e594a3b1 LP |
2228 | |
2229 | label = fdisk_partition_get_name(p); | |
2230 | if (!isempty(label)) { | |
2231 | label_copy = strdup(label); | |
2232 | if (!label_copy) | |
2233 | return log_oom(); | |
2234 | } | |
2235 | ||
2236 | sz = fdisk_partition_get_size(p); | |
ac33e147 | 2237 | assert(sz <= UINT64_MAX/secsz); |
994b3031 | 2238 | sz *= secsz; |
e594a3b1 LP |
2239 | |
2240 | start = fdisk_partition_get_start(p); | |
ac33e147 | 2241 | assert(start <= UINT64_MAX/secsz); |
994b3031 | 2242 | start *= secsz; |
e594a3b1 LP |
2243 | |
2244 | partno = fdisk_partition_get_partno(p); | |
2245 | ||
2246 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
2247 | left_boundary = start; | |
2248 | ||
2249 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
2250 | * an existing one assigned yet. */ | |
2251 | LIST_FOREACH(partitions, pp, context->partitions) { | |
2252 | last = pp; | |
2253 | ||
22e932f4 | 2254 | if (!sd_id128_equal(pp->type.uuid, ptid)) |
e594a3b1 LP |
2255 | continue; |
2256 | ||
2257 | if (!pp->current_partition) { | |
2258 | pp->current_uuid = id; | |
2259 | pp->current_size = sz; | |
2260 | pp->offset = start; | |
2261 | pp->partno = partno; | |
2262 | pp->current_label = TAKE_PTR(label_copy); | |
2263 | ||
2264 | pp->current_partition = p; | |
2265 | fdisk_ref_partition(p); | |
2266 | ||
994b3031 | 2267 | r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding); |
e594a3b1 LP |
2268 | if (r < 0) |
2269 | return r; | |
2270 | ||
2271 | if (pp->current_padding > 0) { | |
2272 | r = context_add_free_area(context, pp->current_padding, pp); | |
2273 | if (r < 0) | |
2274 | return r; | |
2275 | } | |
2276 | ||
2277 | found = true; | |
2278 | break; | |
2279 | } | |
2280 | } | |
2281 | ||
2282 | /* If we have no matching definition, create a new one. */ | |
2283 | if (!found) { | |
2284 | _cleanup_(partition_freep) Partition *np = NULL; | |
2285 | ||
2286 | np = partition_new(); | |
2287 | if (!np) | |
2288 | return log_oom(); | |
2289 | ||
2290 | np->current_uuid = id; | |
22e932f4 | 2291 | np->type = gpt_partition_type_from_uuid(ptid); |
e594a3b1 LP |
2292 | np->current_size = sz; |
2293 | np->offset = start; | |
2294 | np->partno = partno; | |
2295 | np->current_label = TAKE_PTR(label_copy); | |
2296 | ||
2297 | np->current_partition = p; | |
2298 | fdisk_ref_partition(p); | |
2299 | ||
994b3031 | 2300 | r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding); |
e594a3b1 LP |
2301 | if (r < 0) |
2302 | return r; | |
2303 | ||
2304 | if (np->current_padding > 0) { | |
2305 | r = context_add_free_area(context, np->current_padding, np); | |
2306 | if (r < 0) | |
2307 | return r; | |
2308 | } | |
2309 | ||
2310 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
2311 | context->n_partitions++; | |
2312 | } | |
2313 | } | |
2314 | ||
2315 | add_initial_free_area: | |
2316 | nsectors = fdisk_get_nsectors(c); | |
994b3031 LP |
2317 | assert(nsectors <= UINT64_MAX/secsz); |
2318 | nsectors *= secsz; | |
e594a3b1 LP |
2319 | |
2320 | first_lba = fdisk_get_first_lba(c); | |
994b3031 LP |
2321 | assert(first_lba <= UINT64_MAX/secsz); |
2322 | first_lba *= secsz; | |
e594a3b1 LP |
2323 | |
2324 | last_lba = fdisk_get_last_lba(c); | |
2325 | assert(last_lba < UINT64_MAX); | |
2326 | last_lba++; | |
994b3031 LP |
2327 | assert(last_lba <= UINT64_MAX/secsz); |
2328 | last_lba *= secsz; | |
e594a3b1 LP |
2329 | |
2330 | assert(last_lba >= first_lba); | |
2331 | ||
2332 | if (left_boundary == UINT64_MAX) { | |
2333 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
2334 | ||
994b3031 LP |
2335 | first_lba = round_up_size(first_lba, grainsz); |
2336 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2337 | |
2338 | if (last_lba > first_lba) { | |
2339 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
2340 | if (r < 0) | |
2341 | return r; | |
2342 | } | |
2343 | } else { | |
2344 | /* Add space left of first partition */ | |
2345 | assert(left_boundary >= first_lba); | |
2346 | ||
994b3031 LP |
2347 | first_lba = round_up_size(first_lba, grainsz); |
2348 | left_boundary = round_down_size(left_boundary, grainsz); | |
2349 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2350 | |
2351 | if (left_boundary > first_lba) { | |
2352 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
2353 | if (r < 0) | |
2354 | return r; | |
2355 | } | |
2356 | } | |
2357 | ||
2358 | context->start = first_lba; | |
2359 | context->end = last_lba; | |
2360 | context->total = nsectors; | |
994b3031 LP |
2361 | context->sector_size = secsz; |
2362 | context->grain_size = grainsz; | |
e594a3b1 LP |
2363 | context->fdisk_context = TAKE_PTR(c); |
2364 | ||
2365 | return from_scratch; | |
2366 | } | |
2367 | ||
2368 | static void context_unload_partition_table(Context *context) { | |
e594a3b1 LP |
2369 | assert(context); |
2370 | ||
80a226b2 | 2371 | LIST_FOREACH(partitions, p, context->partitions) { |
e594a3b1 LP |
2372 | |
2373 | /* Entirely remove partitions that have no configuration */ | |
2374 | if (PARTITION_IS_FOREIGN(p)) { | |
2375 | partition_unlink_and_free(context, p); | |
2376 | continue; | |
2377 | } | |
2378 | ||
2379 | /* Otherwise drop all data we read off the block device and everything we might have | |
2380 | * calculated based on it */ | |
2381 | ||
2382 | p->dropped = false; | |
2383 | p->current_size = UINT64_MAX; | |
2384 | p->new_size = UINT64_MAX; | |
2385 | p->current_padding = UINT64_MAX; | |
2386 | p->new_padding = UINT64_MAX; | |
2387 | p->partno = UINT64_MAX; | |
2388 | p->offset = UINT64_MAX; | |
2389 | ||
2390 | if (p->current_partition) { | |
2391 | fdisk_unref_partition(p->current_partition); | |
2392 | p->current_partition = NULL; | |
2393 | } | |
2394 | ||
2395 | if (p->new_partition) { | |
2396 | fdisk_unref_partition(p->new_partition); | |
2397 | p->new_partition = NULL; | |
2398 | } | |
2399 | ||
2400 | p->padding_area = NULL; | |
2401 | p->allocated_to_area = NULL; | |
2402 | ||
15d43e30 LP |
2403 | p->current_uuid = SD_ID128_NULL; |
2404 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
2405 | } |
2406 | ||
2407 | context->start = UINT64_MAX; | |
2408 | context->end = UINT64_MAX; | |
2409 | context->total = UINT64_MAX; | |
2410 | ||
2411 | if (context->fdisk_context) { | |
2412 | fdisk_unref_context(context->fdisk_context); | |
2413 | context->fdisk_context = NULL; | |
2414 | } | |
2415 | ||
2416 | context_free_free_areas(context); | |
2417 | } | |
2418 | ||
2419 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
2b59bf51 | 2420 | char *t; |
e594a3b1 LP |
2421 | |
2422 | if (from != UINT64_MAX) { | |
2423 | if (from == to || to == UINT64_MAX) | |
2b59bf51 | 2424 | t = strdup(FORMAT_BYTES(from)); |
e594a3b1 | 2425 | else |
fc03e80c | 2426 | t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 | 2427 | } else if (to != UINT64_MAX) |
fc03e80c | 2428 | t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 LP |
2429 | else { |
2430 | *ret = NULL; | |
2431 | return 0; | |
2432 | } | |
2433 | ||
2b59bf51 | 2434 | if (!t) |
e594a3b1 LP |
2435 | return log_oom(); |
2436 | ||
2b59bf51 | 2437 | *ret = t; |
e594a3b1 LP |
2438 | return 1; |
2439 | } | |
2440 | ||
2441 | static const char *partition_label(const Partition *p) { | |
2442 | assert(p); | |
2443 | ||
2444 | if (p->new_label) | |
2445 | return p->new_label; | |
2446 | ||
2447 | if (p->current_label) | |
2448 | return p->current_label; | |
2449 | ||
22e932f4 | 2450 | return gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
2451 | } |
2452 | ||
cc751c75 | 2453 | static int context_dump_partitions(Context *context) { |
e594a3b1 LP |
2454 | _cleanup_(table_unrefp) Table *t = NULL; |
2455 | uint64_t sum_padding = 0, sum_size = 0; | |
e594a3b1 | 2456 | int r; |
bf030f55 DDM |
2457 | const size_t roothash_col = 13, dropin_files_col = 14, split_path_col = 15; |
2458 | bool has_roothash = false, has_dropin_files = false, has_split_path = false; | |
e594a3b1 | 2459 | |
6a01ea4a | 2460 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
2461 | log_info("Empty partition table."); |
2462 | return 0; | |
2463 | } | |
2464 | ||
bf030f55 DDM |
2465 | t = table_new("type", |
2466 | "label", | |
2467 | "uuid", | |
2468 | "file", | |
2469 | "node", | |
2470 | "offset", | |
2471 | "old size", | |
2472 | "raw size", | |
2473 | "size", | |
2474 | "old padding", | |
2475 | "raw padding", | |
2476 | "padding", | |
2477 | "activity", | |
2478 | "roothash", | |
2479 | "drop-in files", | |
2480 | "split path"); | |
e594a3b1 LP |
2481 | if (!t) |
2482 | return log_oom(); | |
2483 | ||
a015fbe7 | 2484 | if (!DEBUG_LOGGING) { |
6a01ea4a | 2485 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 2486 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
bf030f55 DDM |
2487 | (size_t) 8, (size_t) 11, roothash_col, dropin_files_col, |
2488 | split_path_col); | |
a015fbe7 TH |
2489 | else |
2490 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
b5b7879a | 2491 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 9, (size_t) 10, |
bf030f55 DDM |
2492 | (size_t) 12, roothash_col, dropin_files_col, |
2493 | split_path_col); | |
a015fbe7 | 2494 | } |
e594a3b1 | 2495 | |
e594a3b1 | 2496 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
2497 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
2498 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
2499 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
2500 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
2501 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
2502 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
2503 | |
2504 | LIST_FOREACH(partitions, p, context->partitions) { | |
b5b7879a | 2505 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL; |
b7416360 | 2506 | char uuid_buffer[SD_ID128_UUID_STRING_MAX]; |
a015fbe7 | 2507 | const char *label, *activity = NULL; |
e594a3b1 LP |
2508 | |
2509 | if (p->dropped) | |
2510 | continue; | |
2511 | ||
a015fbe7 TH |
2512 | if (p->current_size == UINT64_MAX) |
2513 | activity = "create"; | |
2514 | else if (p->current_size != p->new_size) | |
2515 | activity = "resize"; | |
2516 | ||
e594a3b1 | 2517 | label = partition_label(p); |
cc751c75 | 2518 | partname = p->partno != UINT64_MAX ? fdisk_partname(context->node, p->partno+1) : NULL; |
e594a3b1 LP |
2519 | |
2520 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2521 | if (r < 0) | |
2522 | return r; | |
2523 | ||
2524 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2525 | if (r < 0) | |
2526 | return r; | |
2527 | ||
2528 | if (p->new_size != UINT64_MAX) | |
2529 | sum_size += p->new_size; | |
2530 | if (p->new_padding != UINT64_MAX) | |
2531 | sum_padding += p->new_padding; | |
2532 | ||
2ecc7a5b DDM |
2533 | if (p->verity != VERITY_OFF) { |
2534 | Partition *hp = p->verity == VERITY_HASH ? p : p->siblings[VERITY_HASH]; | |
2535 | ||
2536 | rh = hp->roothash ? hexmem(hp->roothash, hp->roothash_size) : strdup("TBD"); | |
b5b7879a DDM |
2537 | if (!rh) |
2538 | return log_oom(); | |
2539 | } | |
2540 | ||
e594a3b1 LP |
2541 | r = table_add_many( |
2542 | t, | |
22e932f4 | 2543 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type.uuid, uuid_buffer), |
be9ce018 | 2544 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
11749b61 | 2545 | TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid, |
d0242ac9 | 2546 | TABLE_PATH_BASENAME, p->definition_path, TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), |
a015fbe7 | 2547 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2548 | TABLE_UINT64, p->offset, |
a015fbe7 | 2549 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2550 | TABLE_UINT64, p->new_size, |
2551 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2552 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2553 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2554 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
39fc0174 | 2555 | TABLE_STRING, activity ?: "unchanged", |
b5b7879a | 2556 | TABLE_STRING, rh, |
bf030f55 DDM |
2557 | TABLE_STRV, p->drop_in_files, |
2558 | TABLE_STRING, empty_to_null(p->split_path) ?: "-"); | |
e594a3b1 | 2559 | if (r < 0) |
f987a261 | 2560 | return table_log_add_error(r); |
39fc0174 | 2561 | |
b5b7879a | 2562 | has_roothash = has_roothash || !isempty(rh); |
3ab44dbd | 2563 | has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files); |
bf030f55 | 2564 | has_split_path = has_split_path || !isempty(p->split_path); |
e594a3b1 LP |
2565 | } |
2566 | ||
6a01ea4a | 2567 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2568 | const char *a, *b; |
2569 | ||
2b59bf51 ZJS |
2570 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size)); |
2571 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding)); | |
e594a3b1 LP |
2572 | |
2573 | r = table_add_many( | |
2574 | t, | |
2575 | TABLE_EMPTY, | |
2576 | TABLE_EMPTY, | |
2577 | TABLE_EMPTY, | |
2578 | TABLE_EMPTY, | |
2579 | TABLE_EMPTY, | |
2580 | TABLE_EMPTY, | |
2581 | TABLE_EMPTY, | |
a015fbe7 | 2582 | TABLE_EMPTY, |
e594a3b1 LP |
2583 | TABLE_STRING, a, |
2584 | TABLE_EMPTY, | |
a015fbe7 TH |
2585 | TABLE_EMPTY, |
2586 | TABLE_STRING, b, | |
39fc0174 | 2587 | TABLE_EMPTY, |
b5b7879a | 2588 | TABLE_EMPTY, |
bf030f55 | 2589 | TABLE_EMPTY, |
a015fbe7 | 2590 | TABLE_EMPTY); |
e594a3b1 | 2591 | if (r < 0) |
f987a261 | 2592 | return table_log_add_error(r); |
e594a3b1 LP |
2593 | } |
2594 | ||
b5b7879a DDM |
2595 | if (!has_roothash) { |
2596 | r = table_hide_column_from_display(t, roothash_col); | |
2597 | if (r < 0) | |
2598 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2599 | } | |
2600 | ||
3ab44dbd | 2601 | if (!has_dropin_files) { |
39fc0174 RP |
2602 | r = table_hide_column_from_display(t, dropin_files_col); |
2603 | if (r < 0) | |
2604 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2605 | } | |
2606 | ||
bf030f55 DDM |
2607 | if (!has_split_path) { |
2608 | r = table_hide_column_from_display(t, split_path_col); | |
2609 | if (r < 0) | |
2610 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2611 | } | |
2612 | ||
896e678b | 2613 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2614 | } |
2615 | ||
2616 | static void context_bar_char_process_partition( | |
2617 | Context *context, | |
2618 | Partition *bar[], | |
2619 | size_t n, | |
2620 | Partition *p, | |
2621 | size_t *ret_start) { | |
2622 | ||
2623 | uint64_t from, to, total; | |
2624 | size_t x, y; | |
2625 | ||
2626 | assert(context); | |
2627 | assert(bar); | |
2628 | assert(n > 0); | |
2629 | assert(p); | |
2630 | ||
2631 | if (p->dropped) | |
2632 | return; | |
2633 | ||
2634 | assert(p->offset != UINT64_MAX); | |
2635 | assert(p->new_size != UINT64_MAX); | |
2636 | ||
2637 | from = p->offset; | |
2638 | to = from + p->new_size; | |
2639 | ||
d8daed09 TY |
2640 | assert(context->total > 0); |
2641 | total = context->total; | |
e594a3b1 | 2642 | |
d8daed09 TY |
2643 | assert(from <= total); |
2644 | x = from * n / total; | |
e594a3b1 | 2645 | |
d8daed09 TY |
2646 | assert(to <= total); |
2647 | y = to * n / total; | |
e594a3b1 LP |
2648 | |
2649 | assert(x <= y); | |
2650 | assert(y <= n); | |
2651 | ||
2652 | for (size_t i = x; i < y; i++) | |
2653 | bar[i] = p; | |
2654 | ||
2655 | *ret_start = x; | |
2656 | } | |
2657 | ||
2658 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2659 | _cleanup_free_ char *buf = NULL; | |
e594a3b1 LP |
2660 | const char *label; |
2661 | sd_id128_t id; | |
2662 | ||
2663 | /* Tries really hard to find a suitable description for this partition */ | |
2664 | ||
7b2ffb59 LP |
2665 | if (p->definition_path) |
2666 | return path_extract_filename(p->definition_path, ret); | |
e594a3b1 LP |
2667 | |
2668 | label = partition_label(p); | |
2669 | if (!isempty(label)) { | |
2670 | buf = strdup(label); | |
2671 | goto done; | |
2672 | } | |
2673 | ||
2674 | if (p->partno != UINT64_MAX) { | |
2675 | buf = fdisk_partname(node, p->partno+1); | |
2676 | goto done; | |
2677 | } | |
2678 | ||
11749b61 | 2679 | if (p->new_uuid_is_set) |
e594a3b1 LP |
2680 | id = p->new_uuid; |
2681 | else if (!sd_id128_is_null(p->current_uuid)) | |
2682 | id = p->current_uuid; | |
2683 | else | |
22e932f4 | 2684 | id = p->type.uuid; |
e594a3b1 | 2685 | |
b7416360 | 2686 | buf = strdup(SD_ID128_TO_UUID_STRING(id)); |
e594a3b1 LP |
2687 | |
2688 | done: | |
2689 | if (!buf) | |
2690 | return -ENOMEM; | |
2691 | ||
2692 | *ret = TAKE_PTR(buf); | |
2693 | return 0; | |
2694 | } | |
2695 | ||
cc751c75 | 2696 | static int context_dump_partition_bar(Context *context) { |
e594a3b1 LP |
2697 | _cleanup_free_ Partition **bar = NULL; |
2698 | _cleanup_free_ size_t *start_array = NULL; | |
03677889 | 2699 | Partition *last = NULL; |
e594a3b1 LP |
2700 | bool z = false; |
2701 | size_t c, j = 0; | |
2702 | ||
f391597c | 2703 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2704 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2705 | ||
2706 | bar = new0(Partition*, c); | |
2707 | if (!bar) | |
2708 | return log_oom(); | |
2709 | ||
2710 | start_array = new(size_t, context->n_partitions); | |
2711 | if (!start_array) | |
2712 | return log_oom(); | |
2713 | ||
2714 | LIST_FOREACH(partitions, p, context->partitions) | |
2715 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2716 | ||
2717 | putc(' ', stdout); | |
2718 | ||
2719 | for (size_t i = 0; i < c; i++) { | |
2720 | if (bar[i]) { | |
2721 | if (last != bar[i]) | |
2722 | z = !z; | |
2723 | ||
2724 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2725 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2726 | } else { | |
2727 | fputs(ansi_normal(), stdout); | |
2728 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2729 | } | |
2730 | ||
2731 | last = bar[i]; | |
2732 | } | |
2733 | ||
2734 | fputs(ansi_normal(), stdout); | |
2735 | putc('\n', stdout); | |
2736 | ||
2737 | for (size_t i = 0; i < context->n_partitions; i++) { | |
2738 | _cleanup_free_ char **line = NULL; | |
2739 | ||
2740 | line = new0(char*, c); | |
2741 | if (!line) | |
2742 | return log_oom(); | |
2743 | ||
2744 | j = 0; | |
2745 | LIST_FOREACH(partitions, p, context->partitions) { | |
2746 | _cleanup_free_ char *d = NULL; | |
2747 | j++; | |
2748 | ||
2749 | if (i < context->n_partitions - j) { | |
2750 | ||
2751 | if (line[start_array[j-1]]) { | |
2752 | const char *e; | |
2753 | ||
2754 | /* Upgrade final corner to the right with a branch to the right */ | |
2755 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
2756 | if (e) { | |
2757 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
2758 | if (!d) | |
2759 | return log_oom(); | |
2760 | } | |
2761 | } | |
2762 | ||
2763 | if (!d) { | |
2764 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
2765 | if (!d) | |
2766 | return log_oom(); | |
2767 | } | |
2768 | ||
2769 | } else if (i == context->n_partitions - j) { | |
2770 | _cleanup_free_ char *hint = NULL; | |
2771 | ||
cc751c75 | 2772 | (void) partition_hint(p, context->node, &hint); |
e594a3b1 LP |
2773 | |
2774 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
2775 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
2776 | else | |
2777 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
2778 | ||
2779 | if (!d) | |
2780 | return log_oom(); | |
2781 | } | |
2782 | ||
2783 | if (d) | |
2784 | free_and_replace(line[start_array[j-1]], d); | |
2785 | } | |
2786 | ||
2787 | putc(' ', stdout); | |
2788 | ||
2789 | j = 0; | |
2790 | while (j < c) { | |
2791 | if (line[j]) { | |
2792 | fputs(line[j], stdout); | |
2793 | j += utf8_console_width(line[j]); | |
2794 | } else { | |
2795 | putc(' ', stdout); | |
2796 | j++; | |
2797 | } | |
2798 | } | |
2799 | ||
2800 | putc('\n', stdout); | |
2801 | ||
2802 | for (j = 0; j < c; j++) | |
2803 | free(line[j]); | |
2804 | } | |
2805 | ||
2806 | return 0; | |
2807 | } | |
2808 | ||
b5b7879a DDM |
2809 | static bool context_has_roothash(Context *context) { |
2810 | LIST_FOREACH(partitions, p, context->partitions) | |
2811 | if (p->roothash) | |
2812 | return true; | |
2813 | ||
2814 | return false; | |
2815 | } | |
2816 | ||
cc751c75 | 2817 | static int context_dump(Context *context, bool late) { |
a26d463d DDM |
2818 | int r; |
2819 | ||
2820 | assert(context); | |
a26d463d DDM |
2821 | |
2822 | if (arg_pretty == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2823 | return 0; | |
2824 | ||
b5b7879a DDM |
2825 | /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes |
2826 | * in the output. */ | |
2827 | if (!late && !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2828 | return 0; | |
2829 | ||
2830 | /* If we're not outputting JSON, only dump again after doing all operations if there are any | |
2831 | * roothashes that we need to communicate to the user. */ | |
2832 | if (late && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !context_has_roothash(context)) | |
2833 | return 0; | |
2834 | ||
cc751c75 | 2835 | r = context_dump_partitions(context); |
a26d463d DDM |
2836 | if (r < 0) |
2837 | return r; | |
2838 | ||
b5b7879a DDM |
2839 | /* Make sure we only write the partition bar once, even if we're writing the partition table twice to |
2840 | * communicate roothashes. */ | |
2841 | if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !late) { | |
a26d463d DDM |
2842 | putc('\n', stdout); |
2843 | ||
cc751c75 | 2844 | r = context_dump_partition_bar(context); |
a26d463d DDM |
2845 | if (r < 0) |
2846 | return r; | |
2847 | ||
2848 | putc('\n', stdout); | |
2849 | } | |
2850 | ||
2851 | fflush(stdout); | |
2852 | ||
2853 | return 0; | |
2854 | } | |
2855 | ||
2856 | ||
e594a3b1 | 2857 | static bool context_changed(const Context *context) { |
03677889 | 2858 | assert(context); |
e594a3b1 LP |
2859 | |
2860 | LIST_FOREACH(partitions, p, context->partitions) { | |
2861 | if (p->dropped) | |
2862 | continue; | |
2863 | ||
2864 | if (p->allocated_to_area) | |
2865 | return true; | |
2866 | ||
2867 | if (p->new_size != p->current_size) | |
2868 | return true; | |
2869 | } | |
2870 | ||
2871 | return false; | |
2872 | } | |
2873 | ||
81873a6b | 2874 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
2875 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
2876 | int r; | |
2877 | ||
2878 | assert(context); | |
81873a6b LP |
2879 | assert(offset != UINT64_MAX); |
2880 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
2881 | |
2882 | probe = blkid_new_probe(); | |
2883 | if (!probe) | |
2884 | return log_oom(); | |
2885 | ||
e594a3b1 | 2886 | errno = 0; |
81873a6b | 2887 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 2888 | if (r < 0) |
81873a6b | 2889 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
2890 | |
2891 | errno = 0; | |
2892 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
2893 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
2894 | blkid_probe_enable_partitions(probe, true) < 0 || | |
2895 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 2896 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
2897 | |
2898 | for (;;) { | |
2899 | errno = 0; | |
2900 | r = blkid_do_probe(probe); | |
2901 | if (r < 0) | |
2902 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
2903 | if (r > 0) | |
2904 | break; | |
2905 | ||
2906 | errno = 0; | |
2907 | if (blkid_do_wipe(probe, false) < 0) | |
2908 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
2909 | } | |
2910 | ||
e594a3b1 LP |
2911 | return 0; |
2912 | } | |
2913 | ||
81873a6b LP |
2914 | static int context_wipe_partition(Context *context, Partition *p) { |
2915 | int r; | |
2916 | ||
2917 | assert(context); | |
2918 | assert(p); | |
2919 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
2920 | ||
2921 | assert(p->offset != UINT64_MAX); | |
2922 | assert(p->new_size != UINT64_MAX); | |
2923 | ||
2924 | r = context_wipe_range(context, p->offset, p->new_size); | |
2925 | if (r < 0) | |
2926 | return r; | |
2927 | ||
2928 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
2929 | return 0; | |
2930 | } | |
2931 | ||
2932 | static int context_discard_range( | |
2933 | Context *context, | |
2934 | uint64_t offset, | |
2935 | uint64_t size) { | |
2936 | ||
e594a3b1 LP |
2937 | struct stat st; |
2938 | int fd; | |
2939 | ||
2940 | assert(context); | |
2941 | assert(offset != UINT64_MAX); | |
2942 | assert(size != UINT64_MAX); | |
2943 | ||
2944 | if (size <= 0) | |
2945 | return 0; | |
2946 | ||
a26f4a49 | 2947 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
2948 | |
2949 | if (fstat(fd, &st) < 0) | |
2950 | return -errno; | |
2951 | ||
2952 | if (S_ISREG(st.st_mode)) { | |
2953 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
2954 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2955 | return -EOPNOTSUPP; | |
2956 | ||
2957 | return -errno; | |
2958 | } | |
2959 | ||
2960 | return 1; | |
2961 | } | |
2962 | ||
2963 | if (S_ISBLK(st.st_mode)) { | |
2964 | uint64_t range[2], end; | |
2965 | ||
994b3031 | 2966 | range[0] = round_up_size(offset, context->sector_size); |
e594a3b1 | 2967 | |
55d38014 LP |
2968 | if (offset > UINT64_MAX - size) |
2969 | return -ERANGE; | |
2970 | ||
e594a3b1 LP |
2971 | end = offset + size; |
2972 | if (end <= range[0]) | |
2973 | return 0; | |
2974 | ||
994b3031 | 2975 | range[1] = round_down_size(end - range[0], context->sector_size); |
e594a3b1 LP |
2976 | if (range[1] <= 0) |
2977 | return 0; | |
2978 | ||
2979 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
2980 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2981 | return -EOPNOTSUPP; | |
2982 | ||
2983 | return -errno; | |
2984 | } | |
2985 | ||
2986 | return 1; | |
2987 | } | |
2988 | ||
2989 | return -EOPNOTSUPP; | |
2990 | } | |
2991 | ||
2992 | static int context_discard_partition(Context *context, Partition *p) { | |
2993 | int r; | |
2994 | ||
2995 | assert(context); | |
2996 | assert(p); | |
2997 | ||
2998 | assert(p->offset != UINT64_MAX); | |
2999 | assert(p->new_size != UINT64_MAX); | |
3000 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
3001 | ||
3002 | if (!arg_discard) | |
3003 | return 0; | |
3004 | ||
3005 | r = context_discard_range(context, p->offset, p->new_size); | |
3006 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 3007 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
3008 | return 0; |
3009 | } | |
22163eb5 LP |
3010 | if (r == -EBUSY) { |
3011 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
3012 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
3013 | return 0; | |
3014 | } | |
e594a3b1 LP |
3015 | if (r == 0) { |
3016 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
3017 | return 0; | |
3018 | } | |
3019 | if (r < 0) | |
5b5109e2 | 3020 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 3021 | |
5b5109e2 | 3022 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
3023 | return 1; |
3024 | } | |
3025 | ||
3026 | static int context_discard_gap_after(Context *context, Partition *p) { | |
3027 | uint64_t gap, next = UINT64_MAX; | |
e594a3b1 LP |
3028 | int r; |
3029 | ||
3030 | assert(context); | |
3031 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
3032 | ||
5113436b AF |
3033 | if (!arg_discard) |
3034 | return 0; | |
3035 | ||
e594a3b1 LP |
3036 | if (p) |
3037 | gap = p->offset + p->new_size; | |
3038 | else | |
771805eb SS |
3039 | /* The context start gets rounded up to grain_size, however |
3040 | * existing partitions may be before that so ensure the gap | |
3041 | * starts at the first actually usable lba | |
3042 | */ | |
3043 | gap = fdisk_get_first_lba(context->fdisk_context) * context->sector_size; | |
e594a3b1 LP |
3044 | |
3045 | LIST_FOREACH(partitions, q, context->partitions) { | |
3046 | if (q->dropped) | |
3047 | continue; | |
3048 | ||
3049 | assert(q->offset != UINT64_MAX); | |
3050 | assert(q->new_size != UINT64_MAX); | |
3051 | ||
3052 | if (q->offset < gap) | |
3053 | continue; | |
3054 | ||
3055 | if (next == UINT64_MAX || q->offset < next) | |
3056 | next = q->offset; | |
3057 | } | |
3058 | ||
3059 | if (next == UINT64_MAX) { | |
771805eb | 3060 | next = (fdisk_get_last_lba(context->fdisk_context) + 1) * context->sector_size; |
e594a3b1 LP |
3061 | if (gap > next) |
3062 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
3063 | } | |
3064 | ||
3065 | assert(next >= gap); | |
3066 | r = context_discard_range(context, gap, next - gap); | |
3067 | if (r == -EOPNOTSUPP) { | |
3068 | if (p) | |
5b5109e2 | 3069 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 3070 | else |
5b5109e2 | 3071 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
3072 | return 0; |
3073 | } | |
3074 | if (r == 0) /* Too short */ | |
3075 | return 0; | |
3076 | if (r < 0) { | |
3077 | if (p) | |
3078 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
3079 | else | |
3080 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
3081 | } | |
3082 | ||
3083 | if (p) | |
3084 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
3085 | else | |
3086 | log_info("Successfully discarded gap at beginning of disk."); | |
3087 | ||
3088 | return 0; | |
3089 | } | |
3090 | ||
cc751c75 | 3091 | static int context_wipe_and_discard(Context *context) { |
e594a3b1 LP |
3092 | int r; |
3093 | ||
3094 | assert(context); | |
3095 | ||
3096 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if | |
3097 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
3098 | * device in one go early on. */ | |
3099 | ||
3100 | LIST_FOREACH(partitions, p, context->partitions) { | |
3101 | ||
3102 | if (!p->allocated_to_area) | |
3103 | continue; | |
3104 | ||
8275334b | 3105 | if (partition_defer(p)) |
81d1098b DDM |
3106 | continue; |
3107 | ||
e594a3b1 LP |
3108 | r = context_wipe_partition(context, p); |
3109 | if (r < 0) | |
3110 | return r; | |
3111 | ||
cc751c75 | 3112 | if (!context->from_scratch) { |
f0cb1b95 LP |
3113 | r = context_discard_partition(context, p); |
3114 | if (r < 0) | |
3115 | return r; | |
3116 | ||
e594a3b1 LP |
3117 | r = context_discard_gap_after(context, p); |
3118 | if (r < 0) | |
3119 | return r; | |
3120 | } | |
3121 | } | |
3122 | ||
cc751c75 | 3123 | if (!context->from_scratch) { |
e594a3b1 LP |
3124 | r = context_discard_gap_after(context, NULL); |
3125 | if (r < 0) | |
3126 | return r; | |
3127 | } | |
3128 | ||
3129 | return 0; | |
3130 | } | |
3131 | ||
a64769d6 DDM |
3132 | typedef struct { |
3133 | LoopDevice *loop; | |
3134 | int fd; | |
3135 | char *path; | |
3136 | int whole_fd; | |
3137 | } PartitionTarget; | |
3138 | ||
3139 | static int partition_target_fd(PartitionTarget *t) { | |
3140 | assert(t); | |
3141 | assert(t->loop || t->fd >= 0 || t->whole_fd >= 0); | |
3142 | return t->loop ? t->loop->fd : t->fd >= 0 ? t->fd : t->whole_fd; | |
3143 | } | |
3144 | ||
3145 | static const char* partition_target_path(PartitionTarget *t) { | |
3146 | assert(t); | |
3147 | assert(t->loop || t->path); | |
3148 | return t->loop ? t->loop->node : t->path; | |
3149 | } | |
3150 | ||
3151 | static PartitionTarget *partition_target_free(PartitionTarget *t) { | |
3152 | if (!t) | |
3153 | return NULL; | |
3154 | ||
3155 | loop_device_unref(t->loop); | |
3156 | safe_close(t->fd); | |
3157 | unlink_and_free(t->path); | |
3158 | ||
3159 | return mfree(t); | |
3160 | } | |
3161 | ||
3162 | DEFINE_TRIVIAL_CLEANUP_FUNC(PartitionTarget*, partition_target_free); | |
3163 | ||
d3201eb4 DDM |
3164 | static int prepare_temporary_file(PartitionTarget *t, uint64_t size) { |
3165 | _cleanup_(unlink_and_freep) char *temp = NULL; | |
254d1313 | 3166 | _cleanup_close_ int fd = -EBADF; |
d3201eb4 DDM |
3167 | const char *vt; |
3168 | int r; | |
3169 | ||
3170 | assert(t); | |
3171 | ||
3172 | r = var_tmp_dir(&vt); | |
3173 | if (r < 0) | |
3174 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
3175 | ||
3176 | temp = path_join(vt, "repart-XXXXXX"); | |
3177 | if (!temp) | |
3178 | return log_oom(); | |
3179 | ||
3180 | fd = mkostemp_safe(temp); | |
3181 | if (fd < 0) | |
3182 | return log_error_errno(fd, "Failed to create temporary file: %m"); | |
3183 | ||
3184 | if (ftruncate(fd, size) < 0) | |
3185 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
3186 | FORMAT_BYTES(size)); | |
3187 | ||
3188 | t->fd = TAKE_FD(fd); | |
3189 | t->path = TAKE_PTR(temp); | |
3190 | ||
3191 | return 0; | |
3192 | } | |
3193 | ||
a64769d6 DDM |
3194 | static int partition_target_prepare( |
3195 | Context *context, | |
3196 | Partition *p, | |
3197 | uint64_t size, | |
3198 | bool need_path, | |
3199 | PartitionTarget **ret) { | |
3200 | ||
3201 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; | |
d3201eb4 DDM |
3202 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
3203 | int whole_fd, r; | |
a64769d6 DDM |
3204 | |
3205 | assert(context); | |
3206 | assert(p); | |
3207 | assert(ret); | |
3208 | ||
3209 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3210 | ||
6b1ea55e | 3211 | t = new(PartitionTarget, 1); |
a64769d6 DDM |
3212 | if (!t) |
3213 | return log_oom(); | |
6b1ea55e | 3214 | *t = (PartitionTarget) { |
254d1313 ZJS |
3215 | .fd = -EBADF, |
3216 | .whole_fd = -EBADF, | |
6b1ea55e | 3217 | }; |
a64769d6 | 3218 | |
d3201eb4 DDM |
3219 | if (!need_path) { |
3220 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3221 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
a64769d6 | 3222 | |
d3201eb4 DDM |
3223 | t->whole_fd = whole_fd; |
3224 | *ret = TAKE_PTR(t); | |
3225 | return 0; | |
3226 | } | |
a64769d6 | 3227 | |
d3201eb4 DDM |
3228 | /* Loopback block devices are not only useful to turn regular files into block devices, but |
3229 | * also to cut out sections of block devices into new block devices. */ | |
a64769d6 | 3230 | |
d3201eb4 DDM |
3231 | r = loop_device_make(whole_fd, O_RDWR, p->offset, size, 0, 0, LOCK_EX, &d); |
3232 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
3233 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); | |
3234 | if (r >= 0) { | |
6b1ea55e | 3235 | t->loop = TAKE_PTR(d); |
d3201eb4 DDM |
3236 | *ret = TAKE_PTR(t); |
3237 | return 0; | |
3238 | } | |
a64769d6 | 3239 | |
d3201eb4 DDM |
3240 | /* If we can't allocate a loop device, let's write to a regular file that we copy into the final |
3241 | * image so we can run in containers and without needing root privileges. On filesystems with | |
3242 | * reflinking support, we can take advantage of this and just reflink the result into the image. | |
3243 | */ | |
a64769d6 | 3244 | |
d3201eb4 | 3245 | log_debug_errno(r, "No access to loop devices, falling back to a regular file"); |
a64769d6 | 3246 | |
d3201eb4 DDM |
3247 | r = prepare_temporary_file(t, size); |
3248 | if (r < 0) | |
3249 | return r; | |
a64769d6 DDM |
3250 | |
3251 | *ret = TAKE_PTR(t); | |
3252 | ||
3253 | return 0; | |
3254 | } | |
3255 | ||
3256 | static int partition_target_grow(PartitionTarget *t, uint64_t size) { | |
3257 | int r; | |
3258 | ||
3259 | assert(t); | |
3260 | ||
3261 | if (t->loop) { | |
3262 | r = loop_device_refresh_size(t->loop, UINT64_MAX, size); | |
3263 | if (r < 0) | |
3264 | return log_error_errno(r, "Failed to refresh loopback device size: %m"); | |
3265 | } else if (t->fd >= 0) { | |
3266 | if (ftruncate(t->fd, size) < 0) | |
3267 | return log_error_errno(errno, "Failed to grow '%s' to %s by truncation: %m", | |
3268 | t->path, FORMAT_BYTES(size)); | |
3269 | } | |
3270 | ||
3271 | return 0; | |
3272 | } | |
3273 | ||
3274 | static int partition_target_sync(Context *context, Partition *p, PartitionTarget *t) { | |
3275 | int whole_fd, r; | |
3276 | ||
3277 | assert(context); | |
3278 | assert(p); | |
3279 | assert(t); | |
3280 | ||
3281 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3282 | ||
3283 | if (t->loop) { | |
3284 | r = loop_device_sync(t->loop); | |
3285 | if (r < 0) | |
3286 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3287 | } else if (t->fd >= 0) { | |
e21be797 DDM |
3288 | struct stat st; |
3289 | ||
a64769d6 DDM |
3290 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) |
3291 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3292 | ||
6eccec00 DDM |
3293 | if (lseek(t->fd, 0, SEEK_SET) == (off_t) -1) |
3294 | return log_error_errno(errno, "Failed to seek to start of temporary file: %m"); | |
3295 | ||
e21be797 DDM |
3296 | if (fstat(t->fd, &st) < 0) |
3297 | return log_error_errno(errno, "Failed to stat temporary file: %m"); | |
3298 | ||
3299 | if (st.st_size > (off_t) p->new_size) | |
3300 | return log_error_errno(SYNTHETIC_ERRNO(ENOSPC), | |
3301 | "Partition %" PRIu64 "'s contents (%s) don't fit in the partition (%s)", | |
3302 | p->partno, FORMAT_BYTES(st.st_size), FORMAT_BYTES(p->new_size)); | |
3303 | ||
a64769d6 DDM |
3304 | r = copy_bytes(t->fd, whole_fd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_FSYNC); |
3305 | if (r < 0) | |
3306 | return log_error_errno(r, "Failed to copy bytes to partition: %m"); | |
3307 | } else { | |
3308 | if (fsync(t->whole_fd) < 0) | |
3309 | return log_error_errno(errno, "Failed to sync changes: %m"); | |
3310 | } | |
3311 | ||
3312 | return 0; | |
3313 | } | |
3314 | ||
48a09a8f DDM |
3315 | static int partition_encrypt(Context *context, Partition *p, const char *node) { |
3316 | #if HAVE_LIBCRYPTSETUP && HAVE_CRYPT_SET_DATA_OFFSET && HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE && HAVE_CRYPT_REENCRYPT | |
3317 | struct crypt_params_luks2 luks_params = { | |
922576e4 DDM |
3318 | .label = strempty(ASSERT_PTR(p)->new_label), |
3319 | .sector_size = ASSERT_PTR(context)->sector_size, | |
48a09a8f DDM |
3320 | .data_device = node, |
3321 | }; | |
3322 | struct crypt_params_reencrypt reencrypt_params = { | |
3323 | .mode = CRYPT_REENCRYPT_ENCRYPT, | |
3324 | .direction = CRYPT_REENCRYPT_BACKWARD, | |
3325 | .resilience = "datashift", | |
3326 | .data_shift = LUKS2_METADATA_SIZE / 512, | |
3327 | .luks2 = &luks_params, | |
3328 | .flags = CRYPT_REENCRYPT_INITIALIZE_ONLY|CRYPT_REENCRYPT_MOVE_FIRST_SEGMENT, | |
3329 | }; | |
0d12936d | 3330 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
48a09a8f DDM |
3331 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; |
3332 | _cleanup_fclose_ FILE *h = NULL; | |
3333 | _cleanup_free_ char *hp = NULL; | |
3334 | const char *passphrase = NULL; | |
3335 | size_t passphrase_size = 0; | |
0b75744d | 3336 | const char *vt; |
b9df3536 LP |
3337 | int r; |
3338 | ||
994b3031 | 3339 | assert(context); |
b9df3536 | 3340 | assert(p); |
889914ef LP |
3341 | assert(p->encrypt != ENCRYPT_OFF); |
3342 | ||
0d12936d LP |
3343 | r = dlopen_cryptsetup(); |
3344 | if (r < 0) | |
3345 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
3346 | ||
b9df3536 LP |
3347 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); |
3348 | ||
0b75744d DDM |
3349 | r = var_tmp_dir(&vt); |
3350 | if (r < 0) | |
3351 | return log_error_errno(r, "Failed to determine temporary files directory: %m"); | |
3352 | ||
3353 | r = fopen_temporary_child(vt, &h, &hp); | |
48a09a8f DDM |
3354 | if (r < 0) |
3355 | return log_error_errno(r, "Failed to create temporary LUKS header file: %m"); | |
3356 | ||
3357 | /* Weird cryptsetup requirement which requires the header file to be the size of at least one sector. */ | |
983154f5 | 3358 | r = ftruncate(fileno(h), context->sector_size); |
b9df3536 | 3359 | if (r < 0) |
48a09a8f DDM |
3360 | return log_error_errno(r, "Failed to grow temporary LUKS header file: %m"); |
3361 | ||
3362 | r = sym_crypt_init(&cd, hp); | |
3363 | if (r < 0) | |
3364 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", hp); | |
b9df3536 LP |
3365 | |
3366 | cryptsetup_enable_logging(cd); | |
3367 | ||
48a09a8f DDM |
3368 | /* Disable kernel keyring usage by libcryptsetup as a workaround for |
3369 | * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/273. This makes sure that we can do | |
3370 | * offline encryption even when repart is running in a container. */ | |
3371 | r = sym_crypt_volume_key_keyring(cd, false); | |
3372 | if (r < 0) | |
3373 | return log_error_errno(r, "Failed to disable kernel keyring: %m"); | |
3374 | ||
3375 | r = sym_crypt_metadata_locking(cd, false); | |
3376 | if (r < 0) | |
3377 | return log_error_errno(r, "Failed to disable metadata locking: %m"); | |
3378 | ||
3379 | r = sym_crypt_set_data_offset(cd, LUKS2_METADATA_SIZE / 512); | |
3380 | if (r < 0) | |
3381 | return log_error_errno(r, "Failed to set data offset: %m"); | |
3382 | ||
0d12936d | 3383 | r = sym_crypt_format(cd, |
b9df3536 LP |
3384 | CRYPT_LUKS2, |
3385 | "aes", | |
3386 | "xts-plain64", | |
15cad3a2 | 3387 | SD_ID128_TO_UUID_STRING(p->luks_uuid), |
98e0456e DDM |
3388 | NULL, |
3389 | VOLUME_KEY_SIZE, | |
48a09a8f | 3390 | &luks_params); |
b9df3536 LP |
3391 | if (r < 0) |
3392 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
3393 | ||
889914ef LP |
3394 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
3395 | r = sym_crypt_keyslot_add_by_volume_key( | |
3396 | cd, | |
3397 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3398 | NULL, |
3399 | VOLUME_KEY_SIZE, | |
889914ef LP |
3400 | strempty(arg_key), |
3401 | arg_key_size); | |
3402 | if (r < 0) | |
3403 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
48a09a8f DDM |
3404 | |
3405 | passphrase = strempty(arg_key); | |
3406 | passphrase_size = arg_key_size; | |
889914ef LP |
3407 | } |
3408 | ||
3409 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
3410 | #if HAVE_TPM2 | |
889914ef LP |
3411 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; |
3412 | _cleanup_(erase_and_freep) void *secret = NULL; | |
02ef97cd | 3413 | _cleanup_free_ void *pubkey = NULL; |
acbb504e WR |
3414 | _cleanup_free_ void *blob = NULL, *hash = NULL, *srk_buf = NULL; |
3415 | size_t secret_size, blob_size, hash_size, pubkey_size = 0, srk_buf_size = 0; | |
5e476b85 | 3416 | ssize_t base64_encoded_size; |
2b92a672 | 3417 | uint16_t pcr_bank, primary_alg; |
889914ef LP |
3418 | int keyslot; |
3419 | ||
02ef97cd LP |
3420 | if (arg_tpm2_public_key_pcr_mask != 0) { |
3421 | r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey, &pubkey_size); | |
3422 | if (r < 0) { | |
3423 | if (arg_tpm2_public_key || r != -ENOENT) | |
3424 | return log_error_errno(r, "Failed read TPM PCR public key: %m"); | |
3425 | ||
3426 | log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m"); | |
3427 | arg_tpm2_public_key_pcr_mask = 0; | |
3428 | } | |
3429 | } | |
3430 | ||
d9b5841d LP |
3431 | r = tpm2_seal(arg_tpm2_device, |
3432 | arg_tpm2_pcr_mask, | |
02ef97cd LP |
3433 | pubkey, pubkey_size, |
3434 | arg_tpm2_public_key_pcr_mask, | |
d9b5841d LP |
3435 | /* pin= */ NULL, |
3436 | &secret, &secret_size, | |
3437 | &blob, &blob_size, | |
3438 | &hash, &hash_size, | |
3439 | &pcr_bank, | |
acbb504e WR |
3440 | &primary_alg, |
3441 | &srk_buf, | |
3442 | &srk_buf_size); | |
889914ef LP |
3443 | if (r < 0) |
3444 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
3445 | ||
5e476b85 LP |
3446 | base64_encoded_size = base64mem(secret, secret_size, &base64_encoded); |
3447 | if (base64_encoded_size < 0) | |
3448 | return log_error_errno(base64_encoded_size, "Failed to base64 encode secret key: %m"); | |
889914ef LP |
3449 | |
3450 | r = cryptsetup_set_minimal_pbkdf(cd); | |
3451 | if (r < 0) | |
3452 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
3453 | ||
3454 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
3455 | cd, | |
3456 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3457 | NULL, |
3458 | VOLUME_KEY_SIZE, | |
889914ef | 3459 | base64_encoded, |
5e476b85 | 3460 | base64_encoded_size); |
889914ef | 3461 | if (keyslot < 0) |
48a09a8f | 3462 | return log_error_errno(keyslot, "Failed to add new TPM2 key: %m"); |
889914ef | 3463 | |
f0f4fcae LP |
3464 | r = tpm2_make_luks2_json( |
3465 | keyslot, | |
3466 | arg_tpm2_pcr_mask, | |
3467 | pcr_bank, | |
02ef97cd LP |
3468 | pubkey, pubkey_size, |
3469 | arg_tpm2_public_key_pcr_mask, | |
f0f4fcae LP |
3470 | primary_alg, |
3471 | blob, blob_size, | |
3472 | hash, hash_size, | |
aae6eb96 | 3473 | NULL, 0, /* no salt because tpm2_seal has no pin */ |
acbb504e | 3474 | srk_buf, srk_buf_size, |
f0f4fcae LP |
3475 | 0, |
3476 | &v); | |
889914ef LP |
3477 | if (r < 0) |
3478 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
3479 | ||
3480 | r = cryptsetup_add_token_json(cd, v); | |
3481 | if (r < 0) | |
3482 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
48a09a8f DDM |
3483 | |
3484 | passphrase = base64_encoded; | |
3485 | passphrase_size = strlen(base64_encoded); | |
889914ef LP |
3486 | #else |
3487 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3488 | "Support for TPM2 enrollment not enabled."); | |
3489 | #endif | |
3490 | } | |
b9df3536 | 3491 | |
48a09a8f | 3492 | r = sym_crypt_reencrypt_init_by_passphrase( |
b9df3536 | 3493 | cd, |
98e0456e | 3494 | NULL, |
48a09a8f DDM |
3495 | passphrase, |
3496 | passphrase_size, | |
3497 | CRYPT_ANY_SLOT, | |
3498 | 0, | |
3499 | sym_crypt_get_cipher(cd), | |
3500 | sym_crypt_get_cipher_mode(cd), | |
3501 | &reencrypt_params); | |
b9df3536 | 3502 | if (r < 0) |
48a09a8f | 3503 | return log_error_errno(r, "Failed to prepare for reencryption: %m"); |
b9df3536 | 3504 | |
48a09a8f DDM |
3505 | /* crypt_reencrypt_init_by_passphrase() doesn't actually put the LUKS header at the front, we have |
3506 | * to do that ourselves. */ | |
b9df3536 | 3507 | |
48a09a8f DDM |
3508 | sym_crypt_free(cd); |
3509 | cd = NULL; | |
b9df3536 | 3510 | |
48a09a8f DDM |
3511 | r = sym_crypt_init(&cd, node); |
3512 | if (r < 0) | |
3513 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); | |
b9df3536 | 3514 | |
48a09a8f DDM |
3515 | r = sym_crypt_header_restore(cd, CRYPT_LUKS2, hp); |
3516 | if (r < 0) | |
3517 | return log_error_errno(r, "Failed to place new LUKS header at head of %s: %m", node); | |
b9df3536 | 3518 | |
48a09a8f | 3519 | reencrypt_params.flags &= ~CRYPT_REENCRYPT_INITIALIZE_ONLY; |
b9df3536 | 3520 | |
48a09a8f DDM |
3521 | r = sym_crypt_reencrypt_init_by_passphrase( |
3522 | cd, | |
3523 | NULL, | |
3524 | passphrase, | |
3525 | passphrase_size, | |
3526 | CRYPT_ANY_SLOT, | |
3527 | 0, | |
3528 | NULL, | |
3529 | NULL, | |
3530 | &reencrypt_params); | |
3531 | if (r < 0) | |
3532 | return log_error_errno(r, "Failed to load reencryption context: %m"); | |
b9df3536 | 3533 | |
48a09a8f | 3534 | r = sym_crypt_reencrypt(cd, NULL); |
b9df3536 | 3535 | if (r < 0) |
48a09a8f DDM |
3536 | return log_error_errno(r, "Failed to encrypt %s: %m", node); |
3537 | ||
3538 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
b9df3536 | 3539 | |
3dd8ae5c | 3540 | return 0; |
48a09a8f DDM |
3541 | #else |
3542 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3543 | "libcryptsetup is not supported or is missing required symbols, cannot encrypt: %m"); | |
3dd8ae5c | 3544 | #endif |
b9df3536 LP |
3545 | } |
3546 | ||
2b392d86 DDM |
3547 | static int partition_format_verity_hash( |
3548 | Context *context, | |
3549 | Partition *p, | |
13bde177 | 3550 | const char *node, |
2b392d86 DDM |
3551 | const char *data_node) { |
3552 | ||
3553 | #if HAVE_LIBCRYPTSETUP | |
3554 | Partition *dp; | |
a64769d6 | 3555 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
2b392d86 DDM |
3556 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
3557 | _cleanup_free_ uint8_t *rh = NULL; | |
3558 | size_t rhs; | |
a64769d6 | 3559 | int r; |
2b392d86 DDM |
3560 | |
3561 | assert(context); | |
3562 | assert(p); | |
deeae10e | 3563 | assert(p->verity == VERITY_HASH); |
2b392d86 DDM |
3564 | assert(data_node); |
3565 | ||
3566 | if (p->dropped) | |
3567 | return 0; | |
3568 | ||
3569 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3570 | return 0; | |
3571 | ||
2b392d86 DDM |
3572 | assert_se(dp = p->siblings[VERITY_DATA]); |
3573 | assert(!dp->dropped); | |
3574 | ||
2b392d86 DDM |
3575 | r = dlopen_cryptsetup(); |
3576 | if (r < 0) | |
3577 | return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m"); | |
3578 | ||
13bde177 DDM |
3579 | if (!node) { |
3580 | r = partition_target_prepare(context, p, p->new_size, /*need_path=*/ true, &t); | |
3581 | if (r < 0) | |
3582 | return r; | |
2b392d86 | 3583 | |
13bde177 DDM |
3584 | node = partition_target_path(t); |
3585 | } | |
3586 | ||
3587 | r = sym_crypt_init(&cd, node); | |
2b392d86 DDM |
3588 | if (r < 0) |
3589 | return log_error_errno(r, "Failed to allocate libcryptsetup context: %m"); | |
3590 | ||
e21be797 DDM |
3591 | cryptsetup_enable_logging(cd); |
3592 | ||
2b392d86 DDM |
3593 | r = sym_crypt_format( |
3594 | cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, | |
3595 | &(struct crypt_params_verity){ | |
3596 | .data_device = data_node, | |
3597 | .flags = CRYPT_VERITY_CREATE_HASH, | |
3598 | .hash_name = "sha256", | |
3599 | .hash_type = 1, | |
3600 | .data_block_size = context->sector_size, | |
3601 | .hash_block_size = context->sector_size, | |
3602 | .salt_size = 32, | |
3603 | }); | |
e21be797 DDM |
3604 | if (r < 0) { |
3605 | /* libcryptsetup reports non-descriptive EIO errors for every I/O failure. Luckily, it | |
3606 | * doesn't clobber errno so let's check for ENOSPC so we can report a better error if the | |
3607 | * partition is too small. */ | |
3608 | if (r == -EIO && errno == ENOSPC) | |
3609 | return log_error_errno(errno, | |
3610 | "Verity hash data does not fit in partition %"PRIu64" with size %s", | |
3611 | p->partno, FORMAT_BYTES(p->new_size)); | |
3612 | ||
2b392d86 | 3613 | return log_error_errno(r, "Failed to setup verity hash data: %m"); |
e21be797 | 3614 | } |
2b392d86 | 3615 | |
13bde177 DDM |
3616 | if (t) { |
3617 | r = partition_target_sync(context, p, t); | |
3618 | if (r < 0) | |
3619 | return r; | |
3620 | } | |
a64769d6 | 3621 | |
2b392d86 DDM |
3622 | r = sym_crypt_get_volume_key_size(cd); |
3623 | if (r < 0) | |
3624 | return log_error_errno(r, "Failed to determine verity root hash size: %m"); | |
3625 | rhs = (size_t) r; | |
3626 | ||
3627 | rh = malloc(rhs); | |
3628 | if (!rh) | |
3629 | return log_oom(); | |
3630 | ||
3631 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh, &rhs, NULL, 0); | |
3632 | if (r < 0) | |
3633 | return log_error_errno(r, "Failed to get verity root hash: %m"); | |
3634 | ||
3635 | assert(rhs >= sizeof(sd_id128_t) * 2); | |
3636 | ||
3637 | if (!dp->new_uuid_is_set) { | |
3638 | memcpy_safe(dp->new_uuid.bytes, rh, sizeof(sd_id128_t)); | |
3639 | dp->new_uuid_is_set = true; | |
3640 | } | |
3641 | ||
3642 | if (!p->new_uuid_is_set) { | |
3643 | memcpy_safe(p->new_uuid.bytes, rh + rhs - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
3644 | p->new_uuid_is_set = true; | |
3645 | } | |
3646 | ||
3647 | p->roothash = TAKE_PTR(rh); | |
3648 | p->roothash_size = rhs; | |
3649 | ||
3650 | return 0; | |
3651 | #else | |
3652 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes: %m"); | |
3653 | #endif | |
3654 | } | |
3655 | ||
4ecd39c5 DDM |
3656 | static int sign_verity_roothash( |
3657 | const uint8_t *roothash, | |
3658 | size_t roothash_size, | |
3659 | uint8_t **ret_signature, | |
3660 | size_t *ret_signature_size) { | |
3661 | ||
3662 | #if HAVE_OPENSSL | |
3663 | _cleanup_(BIO_freep) BIO *rb = NULL; | |
3664 | _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL; | |
3665 | _cleanup_free_ char *hex = NULL; | |
3666 | _cleanup_free_ uint8_t *sig = NULL; | |
3667 | int sigsz; | |
3668 | ||
3669 | assert(roothash); | |
3670 | assert(roothash_size > 0); | |
3671 | assert(ret_signature); | |
3672 | assert(ret_signature_size); | |
3673 | ||
3674 | hex = hexmem(roothash, roothash_size); | |
3675 | if (!hex) | |
3676 | return log_oom(); | |
3677 | ||
3678 | rb = BIO_new_mem_buf(hex, -1); | |
3679 | if (!rb) | |
3680 | return log_oom(); | |
3681 | ||
3682 | p7 = PKCS7_sign(arg_certificate, arg_private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY); | |
3683 | if (!p7) | |
3684 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s", | |
3685 | ERR_error_string(ERR_get_error(), NULL)); | |
3686 | ||
3687 | sigsz = i2d_PKCS7(p7, &sig); | |
3688 | if (sigsz < 0) | |
3689 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s", | |
3690 | ERR_error_string(ERR_get_error(), NULL)); | |
3691 | ||
3692 | *ret_signature = TAKE_PTR(sig); | |
3693 | *ret_signature_size = sigsz; | |
3694 | ||
3695 | return 0; | |
3696 | #else | |
3697 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot setup verity signature: %m"); | |
3698 | #endif | |
3699 | } | |
3700 | ||
3701 | static int partition_format_verity_sig(Context *context, Partition *p) { | |
3702 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
3703 | _cleanup_free_ uint8_t *sig = NULL; | |
3704 | _cleanup_free_ char *text = NULL; | |
3705 | Partition *hp; | |
3706 | uint8_t fp[X509_FINGERPRINT_SIZE]; | |
d28c6ce6 | 3707 | size_t sigsz = 0; /* avoid false maybe-uninitialized warning */ |
4ecd39c5 DDM |
3708 | int whole_fd, r; |
3709 | ||
3710 | assert(p->verity == VERITY_SIG); | |
3711 | ||
3712 | if (p->dropped) | |
3713 | return 0; | |
3714 | ||
3715 | if (PARTITION_EXISTS(p)) | |
3716 | return 0; | |
3717 | ||
4ecd39c5 DDM |
3718 | assert_se(hp = p->siblings[VERITY_HASH]); |
3719 | assert(!hp->dropped); | |
3720 | ||
3721 | assert(arg_certificate); | |
3722 | ||
3723 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3724 | ||
3725 | r = sign_verity_roothash(hp->roothash, hp->roothash_size, &sig, &sigsz); | |
3726 | if (r < 0) | |
3727 | return r; | |
3728 | ||
3729 | r = x509_fingerprint(arg_certificate, fp); | |
3730 | if (r < 0) | |
3731 | return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m"); | |
3732 | ||
3733 | r = json_build(&v, | |
3734 | JSON_BUILD_OBJECT( | |
3735 | JSON_BUILD_PAIR("rootHash", JSON_BUILD_HEX(hp->roothash, hp->roothash_size)), | |
3736 | JSON_BUILD_PAIR( | |
3737 | "certificateFingerprint", | |
3738 | JSON_BUILD_HEX(fp, sizeof(fp)) | |
3739 | ), | |
3740 | JSON_BUILD_PAIR("signature", JSON_BUILD_BASE64(sig, sigsz)) | |
3741 | ) | |
3742 | ); | |
3743 | if (r < 0) | |
3744 | return log_error_errno(r, "Failed to build JSON object: %m"); | |
3745 | ||
3746 | r = json_variant_format(v, 0, &text); | |
3747 | if (r < 0) | |
3748 | return log_error_errno(r, "Failed to format JSON object: %m"); | |
3749 | ||
d28c6ce6 | 3750 | r = strgrowpad0(&text, p->new_size); |
4ecd39c5 | 3751 | if (r < 0) |
d28c6ce6 | 3752 | return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(p->new_size)); |
4ecd39c5 DDM |
3753 | |
3754 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3755 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3756 | ||
d28c6ce6 | 3757 | r = loop_write(whole_fd, text, p->new_size, /*do_poll=*/ false); |
4ecd39c5 DDM |
3758 | if (r < 0) |
3759 | return log_error_errno(r, "Failed to write verity signature to partition: %m"); | |
3760 | ||
3761 | if (fsync(whole_fd) < 0) | |
3762 | return log_error_errno(errno, "Failed to synchronize verity signature JSON: %m"); | |
3763 | ||
3764 | return 0; | |
3765 | } | |
3766 | ||
757bc2e4 | 3767 | static int context_copy_blocks(Context *context) { |
a64769d6 | 3768 | int r; |
757bc2e4 LP |
3769 | |
3770 | assert(context); | |
3771 | ||
3772 | /* Copy in file systems on the block level */ | |
3773 | ||
3774 | LIST_FOREACH(partitions, p, context->partitions) { | |
a64769d6 | 3775 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
757bc2e4 LP |
3776 | |
3777 | if (p->copy_blocks_fd < 0) | |
3778 | continue; | |
3779 | ||
3780 | if (p->dropped) | |
3781 | continue; | |
3782 | ||
3783 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
3784 | continue; | |
3785 | ||
8275334b | 3786 | if (partition_defer(p)) |
81d1098b DDM |
3787 | continue; |
3788 | ||
757bc2e4 LP |
3789 | assert(p->new_size != UINT64_MAX); |
3790 | assert(p->copy_blocks_size != UINT64_MAX); | |
48a09a8f | 3791 | assert(p->new_size >= p->copy_blocks_size + (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
757bc2e4 | 3792 | |
a64769d6 DDM |
3793 | r = partition_target_prepare(context, p, p->new_size, |
3794 | /*need_path=*/ p->encrypt != ENCRYPT_OFF || p->siblings[VERITY_HASH], | |
3795 | &t); | |
3796 | if (r < 0) | |
3797 | return r; | |
757bc2e4 | 3798 | |
2b59bf51 ZJS |
3799 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", |
3800 | p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno); | |
757bc2e4 | 3801 | |
a64769d6 | 3802 | r = copy_bytes(p->copy_blocks_fd, partition_target_fd(t), p->copy_blocks_size, COPY_REFLINK); |
757bc2e4 LP |
3803 | if (r < 0) |
3804 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
3805 | ||
889914ef | 3806 | if (p->encrypt != ENCRYPT_OFF) { |
a64769d6 | 3807 | r = partition_encrypt(context, p, partition_target_path(t)); |
b9df3536 LP |
3808 | if (r < 0) |
3809 | return r; | |
b9df3536 LP |
3810 | } |
3811 | ||
a64769d6 DDM |
3812 | r = partition_target_sync(context, p, t); |
3813 | if (r < 0) | |
3814 | return r; | |
48a09a8f | 3815 | |
757bc2e4 | 3816 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
2b392d86 | 3817 | |
e463e257 | 3818 | if (p->siblings[VERITY_HASH] && !partition_defer(p->siblings[VERITY_HASH])) { |
a64769d6 | 3819 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
13bde177 | 3820 | /* node = */ NULL, partition_target_path(t)); |
2b392d86 DDM |
3821 | if (r < 0) |
3822 | return r; | |
3823 | } | |
4ecd39c5 | 3824 | |
e463e257 | 3825 | if (p->siblings[VERITY_SIG] && !partition_defer(p->siblings[VERITY_SIG])) { |
4ecd39c5 DDM |
3826 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); |
3827 | if (r < 0) | |
3828 | return r; | |
3829 | } | |
757bc2e4 LP |
3830 | } |
3831 | ||
3832 | return 0; | |
3833 | } | |
3834 | ||
b63bd125 | 3835 | static int do_copy_files(Partition *p, const char *root, Hashmap *denylist) { |
8a794850 LP |
3836 | int r; |
3837 | ||
3838 | assert(p); | |
92cd7e7c | 3839 | assert(root); |
8a794850 | 3840 | |
3e451460 DDM |
3841 | /* copy_tree_at() automatically copies the permissions of source directories to target directories if |
3842 | * it created them. However, the root directory is created by us, so we have to manually take care | |
3843 | * that it is initialized. We use the first source directory targeting "/" as the metadata source for | |
3844 | * the root directory. */ | |
3845 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
3846 | _cleanup_close_ int rfd = -EBADF, sfd = -EBADF; | |
3847 | ||
3848 | if (!path_equal(*target, "/")) | |
3849 | continue; | |
3850 | ||
3851 | rfd = open(root, O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
3852 | if (rfd < 0) | |
3853 | return rfd; | |
3854 | ||
f461a28d | 3855 | sfd = chase_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_PATH|O_DIRECTORY|O_CLOEXEC|O_NOCTTY, NULL); |
3e451460 DDM |
3856 | if (sfd < 0) |
3857 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
3858 | ||
3859 | (void) copy_xattr(sfd, NULL, rfd, NULL, COPY_ALL_XATTRS); | |
3860 | (void) copy_access(sfd, rfd); | |
3861 | (void) copy_times(sfd, rfd, 0); | |
3862 | ||
3863 | break; | |
3864 | } | |
3865 | ||
8a794850 | 3866 | STRV_FOREACH_PAIR(source, target, p->copy_files) { |
254d1313 | 3867 | _cleanup_close_ int sfd = -EBADF, pfd = -EBADF, tfd = -EBADF; |
8a794850 | 3868 | |
f461a28d | 3869 | sfd = chase_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL); |
8a794850 LP |
3870 | if (sfd < 0) |
3871 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
3872 | ||
3873 | r = fd_verify_regular(sfd); | |
3874 | if (r < 0) { | |
3875 | if (r != -EISDIR) | |
3876 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
3877 | ||
3878 | /* We are looking at a directory */ | |
f461a28d | 3879 | tfd = chase_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3880 | if (tfd < 0) { |
f21a3a82 LP |
3881 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3882 | ||
8a794850 LP |
3883 | if (tfd != -ENOENT) |
3884 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
3885 | ||
f21a3a82 LP |
3886 | r = path_extract_filename(*target, &fn); |
3887 | if (r < 0) | |
3888 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3889 | ||
3890 | r = path_extract_directory(*target, &dn); | |
3891 | if (r < 0) | |
3892 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3893 | ||
92cd7e7c | 3894 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3895 | if (r < 0) |
3896 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
3897 | ||
f461a28d | 3898 | pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 LP |
3899 | if (pfd < 0) |
3900 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
3901 | ||
652d9040 LP |
3902 | r = copy_tree_at( |
3903 | sfd, ".", | |
6020d00d | 3904 | pfd, fn, |
ff1b55ff | 3905 | UID_INVALID, GID_INVALID, |
336ae0e7 | 3906 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN, |
c0fad2d9 | 3907 | denylist); |
8a794850 | 3908 | } else |
652d9040 LP |
3909 | r = copy_tree_at( |
3910 | sfd, ".", | |
3911 | tfd, ".", | |
ff1b55ff | 3912 | UID_INVALID, GID_INVALID, |
336ae0e7 | 3913 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN, |
c0fad2d9 | 3914 | denylist); |
8a794850 | 3915 | if (r < 0) |
cf2ed23c DDM |
3916 | return log_error_errno(r, "Failed to copy '%s%s' to '%s%s': %m", |
3917 | strempty(arg_root), *source, strempty(root), *target); | |
8a794850 | 3918 | } else { |
f21a3a82 LP |
3919 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3920 | ||
8a794850 LP |
3921 | /* We are looking at a regular file */ |
3922 | ||
f21a3a82 LP |
3923 | r = path_extract_filename(*target, &fn); |
3924 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
3925 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
3926 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
3927 | if (r < 0) | |
3928 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3929 | ||
3930 | r = path_extract_directory(*target, &dn); | |
3931 | if (r < 0) | |
3932 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3933 | ||
92cd7e7c | 3934 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3935 | if (r < 0) |
3936 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
3937 | ||
f461a28d | 3938 | pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3939 | if (pfd < 0) |
a0ff9971 | 3940 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 3941 | |
e2819067 | 3942 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
3943 | if (tfd < 0) |
3944 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
3945 | ||
81427d0f | 3946 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_SIGINT); |
8a794850 | 3947 | if (r < 0) |
554a2b64 | 3948 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 3949 | |
c17cfe6e | 3950 | (void) copy_xattr(sfd, NULL, tfd, NULL, COPY_ALL_XATTRS); |
8a794850 LP |
3951 | (void) copy_access(sfd, tfd); |
3952 | (void) copy_times(sfd, tfd, 0); | |
3953 | } | |
3954 | } | |
3955 | ||
3956 | return 0; | |
3957 | } | |
3958 | ||
49fb6e97 | 3959 | static int do_make_directories(Partition *p, const char *root) { |
d83d8048 LP |
3960 | int r; |
3961 | ||
3962 | assert(p); | |
92cd7e7c | 3963 | assert(root); |
d83d8048 LP |
3964 | |
3965 | STRV_FOREACH(d, p->make_directories) { | |
3966 | ||
ff1b55ff | 3967 | r = mkdir_p_root(root, *d, UID_INVALID, GID_INVALID, 0755); |
d83d8048 LP |
3968 | if (r < 0) |
3969 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
3970 | } | |
3971 | ||
3972 | return 0; | |
3973 | } | |
3974 | ||
d3201eb4 DDM |
3975 | static bool partition_needs_populate(Partition *p) { |
3976 | assert(p); | |
3977 | return !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories); | |
3978 | } | |
3979 | ||
b63bd125 | 3980 | static int partition_populate_directory(Partition *p, Hashmap *denylist, char **ret) { |
95bfd3cd | 3981 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
1eb86ddd | 3982 | const char *vt; |
95bfd3cd DDM |
3983 | int r; |
3984 | ||
e59678b2 | 3985 | assert(ret); |
95bfd3cd | 3986 | |
b24bfd6e DDM |
3987 | log_info("Populating %s filesystem.", p->format); |
3988 | ||
1eb86ddd DDM |
3989 | r = var_tmp_dir(&vt); |
3990 | if (r < 0) | |
3991 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
95bfd3cd | 3992 | |
1eb86ddd DDM |
3993 | r = tempfn_random_child(vt, "repart", &root); |
3994 | if (r < 0) | |
3995 | return log_error_errno(r, "Failed to generate temporary directory: %m"); | |
3996 | ||
3997 | r = mkdir(root, 0755); | |
3998 | if (r < 0) | |
3999 | return log_error_errno(errno, "Failed to create temporary directory: %m"); | |
0b34f351 | 4000 | |
49fb6e97 | 4001 | r = do_copy_files(p, root, denylist); |
95bfd3cd DDM |
4002 | if (r < 0) |
4003 | return r; | |
4004 | ||
49fb6e97 | 4005 | r = do_make_directories(p, root); |
95bfd3cd DDM |
4006 | if (r < 0) |
4007 | return r; | |
4008 | ||
b24bfd6e DDM |
4009 | log_info("Successfully populated %s filesystem.", p->format); |
4010 | ||
e59678b2 | 4011 | *ret = TAKE_PTR(root); |
95bfd3cd DDM |
4012 | return 0; |
4013 | } | |
4014 | ||
b63bd125 | 4015 | static int partition_populate_filesystem(Partition *p, const char *node, Hashmap *denylist) { |
8a794850 LP |
4016 | int r; |
4017 | ||
4018 | assert(p); | |
4019 | assert(node); | |
4020 | ||
b24bfd6e | 4021 | log_info("Populating %s filesystem.", p->format); |
8a794850 LP |
4022 | |
4023 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
4024 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
4025 | * detached mount propagation. */ | |
4026 | ||
4027 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
4028 | if (r < 0) | |
4029 | return r; | |
4030 | if (r == 0) { | |
4031 | static const char fs[] = "/run/systemd/mount-root"; | |
4032 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
4033 | ||
4034 | r = mkdir_p(fs, 0700); | |
4035 | if (r < 0) { | |
4036 | log_error_errno(r, "Failed to create mount point: %m"); | |
4037 | _exit(EXIT_FAILURE); | |
4038 | } | |
4039 | ||
511a8cfe | 4040 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
4041 | _exit(EXIT_FAILURE); |
4042 | ||
49fb6e97 | 4043 | if (do_copy_files(p, fs, denylist) < 0) |
8a794850 LP |
4044 | _exit(EXIT_FAILURE); |
4045 | ||
49fb6e97 | 4046 | if (do_make_directories(p, fs) < 0) |
d83d8048 LP |
4047 | _exit(EXIT_FAILURE); |
4048 | ||
8a794850 LP |
4049 | r = syncfs_path(AT_FDCWD, fs); |
4050 | if (r < 0) { | |
4051 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
4052 | _exit(EXIT_FAILURE); | |
4053 | } | |
4054 | ||
4055 | _exit(EXIT_SUCCESS); | |
4056 | } | |
4057 | ||
b24bfd6e | 4058 | log_info("Successfully populated %s filesystem.", p->format); |
8a794850 LP |
4059 | return 0; |
4060 | } | |
4061 | ||
b63bd125 | 4062 | static int add_exclude_path(const char *path, Hashmap **denylist, DenyType type) { |
5ab863be DDM |
4063 | _cleanup_free_ struct stat *st = NULL; |
4064 | int r; | |
4065 | ||
4066 | assert(path); | |
4067 | assert(denylist); | |
4068 | ||
4069 | st = new(struct stat, 1); | |
4070 | if (!st) | |
4071 | return log_oom(); | |
4072 | ||
f461a28d | 4073 | r = chase_and_stat(path, arg_root, CHASE_PREFIX_ROOT, NULL, st); |
5ab863be DDM |
4074 | if (r == -ENOENT) |
4075 | return 0; | |
4076 | if (r < 0) | |
4077 | return log_error_errno(r, "Failed to stat source file '%s%s': %m", | |
4078 | strempty(arg_root), path); | |
4079 | ||
b63bd125 | 4080 | if (hashmap_contains(*denylist, st)) |
5ab863be DDM |
4081 | return 0; |
4082 | ||
b63bd125 | 4083 | if (hashmap_ensure_put(denylist, &inode_hash_ops, st, INT_TO_PTR(type)) < 0) |
5ab863be DDM |
4084 | return log_oom(); |
4085 | ||
4086 | TAKE_PTR(st); | |
4087 | ||
4088 | return 0; | |
4089 | } | |
4090 | ||
b63bd125 DDM |
4091 | static int make_copy_files_denylist(Context *context, const Partition *p, Hashmap **ret) { |
4092 | _cleanup_hashmap_free_ Hashmap *denylist = NULL; | |
c0fad2d9 DDM |
4093 | int r; |
4094 | ||
4095 | assert(context); | |
a9af8276 | 4096 | assert(p); |
c0fad2d9 DDM |
4097 | assert(ret); |
4098 | ||
a9af8276 | 4099 | LIST_FOREACH(partitions, q, context->partitions) { |
b63bd125 DDM |
4100 | if (p == q) |
4101 | continue; | |
4102 | ||
a9af8276 | 4103 | const char *sources = gpt_partition_type_mountpoint_nulstr(q->type); |
c0fad2d9 DDM |
4104 | if (!sources) |
4105 | continue; | |
4106 | ||
4107 | NULSTR_FOREACH(s, sources) { | |
5ab863be DDM |
4108 | /* Exclude the children of partition mount points so that the nested partition mount |
4109 | * point itself still ends up in the upper partition. */ | |
c0fad2d9 | 4110 | |
b63bd125 | 4111 | r = add_exclude_path(s, &denylist, DENY_CONTENTS); |
c0fad2d9 | 4112 | if (r < 0) |
5ab863be | 4113 | return r; |
c0fad2d9 DDM |
4114 | } |
4115 | } | |
4116 | ||
4d8ff4e8 DDM |
4117 | FOREACH_STRING(s, "proc", "sys", "dev", "tmp", "run", "var/tmp") { |
4118 | r = add_exclude_path(s, &denylist, DENY_CONTENTS); | |
4119 | if (r < 0) | |
4120 | return r; | |
4121 | } | |
4122 | ||
a9af8276 | 4123 | STRV_FOREACH(e, p->exclude_files) { |
b63bd125 | 4124 | r = add_exclude_path(*e, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE); |
a9af8276 | 4125 | if (r < 0) |
5ab863be | 4126 | return r; |
a9af8276 DDM |
4127 | } |
4128 | ||
c0fad2d9 DDM |
4129 | *ret = TAKE_PTR(denylist); |
4130 | return 0; | |
4131 | } | |
4132 | ||
53171c04 | 4133 | static int context_mkfs(Context *context) { |
a64769d6 | 4134 | int r; |
53171c04 LP |
4135 | |
4136 | assert(context); | |
4137 | ||
4138 | /* Make a file system */ | |
4139 | ||
4140 | LIST_FOREACH(partitions, p, context->partitions) { | |
b63bd125 | 4141 | _cleanup_hashmap_free_ Hashmap *denylist = NULL; |
e59678b2 | 4142 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
a64769d6 | 4143 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
4b8ce14f | 4144 | _cleanup_strv_free_ char **extra_mkfs_options = NULL; |
53171c04 LP |
4145 | |
4146 | if (p->dropped) | |
4147 | continue; | |
4148 | ||
4149 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
4150 | continue; | |
4151 | ||
4152 | if (!p->format) | |
4153 | continue; | |
4154 | ||
c4a87b76 DDM |
4155 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
4156 | if (p->copy_blocks_fd >= 0) | |
4157 | continue; | |
4158 | ||
8275334b | 4159 | if (partition_defer(p)) |
81d1098b DDM |
4160 | continue; |
4161 | ||
53171c04 LP |
4162 | assert(p->offset != UINT64_MAX); |
4163 | assert(p->new_size != UINT64_MAX); | |
48a09a8f | 4164 | assert(p->new_size >= (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
53171c04 | 4165 | |
a9af8276 DDM |
4166 | r = make_copy_files_denylist(context, p, &denylist); |
4167 | if (r < 0) | |
4168 | return r; | |
4169 | ||
a64769d6 DDM |
4170 | /* If we're doing encryption, we make sure we keep free space at the end which is required |
4171 | * for cryptsetup's offline encryption. */ | |
4172 | r = partition_target_prepare(context, p, | |
4173 | p->new_size - (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0), | |
4174 | /*need_path=*/ true, | |
4175 | &t); | |
53171c04 | 4176 | if (r < 0) |
a64769d6 | 4177 | return r; |
53171c04 | 4178 | |
53171c04 LP |
4179 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
4180 | ||
d3201eb4 DDM |
4181 | /* If we're not writing to a loop device or if we're populating a read-only filesystem, we |
4182 | * have to populate using the filesystem's mkfs's --root (or equivalent) option. To do that, | |
4183 | * we need to set up the final directory tree beforehand. */ | |
4184 | ||
4185 | if (partition_needs_populate(p) && (!t->loop || fstype_is_ro(p->format))) { | |
4186 | if (!mkfs_supports_root_option(p->format)) | |
4187 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
4188 | "Loop device access is required to populate %s filesystems.", | |
4189 | p->format); | |
95bfd3cd | 4190 | |
e59678b2 | 4191 | r = partition_populate_directory(p, denylist, &root); |
143c3c08 DDM |
4192 | if (r < 0) |
4193 | return r; | |
4194 | } | |
95bfd3cd | 4195 | |
4b8ce14f DDM |
4196 | r = mkfs_options_from_env("REPART", p->format, &extra_mkfs_options); |
4197 | if (r < 0) | |
4198 | return log_error_errno(r, | |
4199 | "Failed to determine mkfs command line options for '%s': %m", | |
4200 | p->format); | |
4201 | ||
a64769d6 | 4202 | r = make_filesystem(partition_target_path(t), p->format, strempty(p->new_label), root, |
4b8ce14f | 4203 | p->fs_uuid, arg_discard, context->sector_size, extra_mkfs_options); |
48a09a8f | 4204 | if (r < 0) |
53171c04 LP |
4205 | return r; |
4206 | ||
4207 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
4208 | ||
d3201eb4 DDM |
4209 | /* If we're writing to a loop device, we can now mount the empty filesystem and populate it. */ |
4210 | if (partition_needs_populate(p) && !root) { | |
4211 | assert(t->loop); | |
4212 | ||
4213 | r = partition_populate_filesystem(p, t->loop->node, denylist); | |
48a09a8f | 4214 | if (r < 0) |
143c3c08 | 4215 | return r; |
b9df3536 LP |
4216 | } |
4217 | ||
889914ef | 4218 | if (p->encrypt != ENCRYPT_OFF) { |
a64769d6 | 4219 | r = partition_target_grow(t, p->new_size); |
b9df3536 | 4220 | if (r < 0) |
a64769d6 | 4221 | return r; |
b9df3536 | 4222 | |
a64769d6 | 4223 | r = partition_encrypt(context, p, partition_target_path(t)); |
48a09a8f DDM |
4224 | if (r < 0) |
4225 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
b9df3536 | 4226 | } |
8a794850 | 4227 | |
48a09a8f DDM |
4228 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and |
4229 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
4230 | * the disk. */ | |
4231 | ||
a64769d6 | 4232 | r = partition_target_sync(context, p, t); |
53171c04 | 4233 | if (r < 0) |
a64769d6 | 4234 | return r; |
b5b7879a | 4235 | |
e463e257 | 4236 | if (p->siblings[VERITY_HASH] && !partition_defer(p->siblings[VERITY_HASH])) { |
a64769d6 | 4237 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
13bde177 | 4238 | /* node = */ NULL, partition_target_path(t)); |
2b392d86 DDM |
4239 | if (r < 0) |
4240 | return r; | |
b5b7879a | 4241 | } |
4ecd39c5 | 4242 | |
e463e257 | 4243 | if (p->siblings[VERITY_SIG] && !partition_defer(p->siblings[VERITY_SIG])) { |
4ecd39c5 DDM |
4244 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); |
4245 | if (r < 0) | |
4246 | return r; | |
4247 | } | |
b5b7879a DDM |
4248 | } |
4249 | ||
4250 | return 0; | |
4251 | } | |
4252 | ||
b456191d DDM |
4253 | static int parse_x509_certificate(const char *certificate, size_t certificate_size, X509 **ret) { |
4254 | #if HAVE_OPENSSL | |
4255 | _cleanup_(X509_freep) X509 *cert = NULL; | |
4256 | _cleanup_(BIO_freep) BIO *cb = NULL; | |
4257 | ||
4258 | assert(certificate); | |
4259 | assert(certificate_size > 0); | |
4260 | assert(ret); | |
4261 | ||
4262 | cb = BIO_new_mem_buf(certificate, certificate_size); | |
4263 | if (!cb) | |
4264 | return log_oom(); | |
4265 | ||
4266 | cert = PEM_read_bio_X509(cb, NULL, NULL, NULL); | |
4267 | if (!cert) | |
4268 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Failed to parse X.509 certificate: %s", | |
4269 | ERR_error_string(ERR_get_error(), NULL)); | |
4270 | ||
4271 | if (ret) | |
4272 | *ret = TAKE_PTR(cert); | |
4273 | ||
4274 | return 0; | |
4275 | #else | |
4276 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse X509 certificate."); | |
4277 | #endif | |
4278 | } | |
4279 | ||
4280 | static int parse_private_key(const char *key, size_t key_size, EVP_PKEY **ret) { | |
4281 | #if HAVE_OPENSSL | |
4282 | _cleanup_(BIO_freep) BIO *kb = NULL; | |
4283 | _cleanup_(EVP_PKEY_freep) EVP_PKEY *pk = NULL; | |
4284 | ||
4285 | assert(key); | |
4286 | assert(key_size > 0); | |
4287 | assert(ret); | |
4288 | ||
4289 | kb = BIO_new_mem_buf(key, key_size); | |
4290 | if (!kb) | |
4291 | return log_oom(); | |
4292 | ||
4293 | pk = PEM_read_bio_PrivateKey(kb, NULL, NULL, NULL); | |
4294 | if (!pk) | |
4295 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to parse PEM private key: %s", | |
4296 | ERR_error_string(ERR_get_error(), NULL)); | |
4297 | ||
4298 | if (ret) | |
4299 | *ret = TAKE_PTR(pk); | |
4300 | ||
4301 | return 0; | |
4302 | #else | |
4303 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse private key."); | |
4304 | #endif | |
4305 | } | |
4306 | ||
e594a3b1 LP |
4307 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
4308 | struct { | |
4309 | sd_id128_t type_uuid; | |
4310 | uint64_t counter; | |
695cfd53 | 4311 | } _packed_ plaintext = {}; |
e594a3b1 | 4312 | union { |
ade99252 | 4313 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
4314 | sd_id128_t id; |
4315 | } result; | |
4316 | ||
4317 | uint64_t k = 0; | |
e594a3b1 LP |
4318 | int r; |
4319 | ||
4320 | assert(context); | |
4321 | assert(p); | |
4322 | assert(ret); | |
4323 | ||
4324 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
4325 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
4326 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
4327 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
4328 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
4329 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
4330 | * second and later partition of the same type) if we have more than one partition of the same | |
4331 | * time. Or in other words: | |
4332 | * | |
4333 | * With: | |
4334 | * SEED := /etc/machine-id | |
4335 | * | |
4336 | * If first partition instance of type TYPE_UUID: | |
4337 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
4338 | * | |
4339 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
4340 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
4341 | */ | |
4342 | ||
4343 | LIST_FOREACH(partitions, q, context->partitions) { | |
4344 | if (p == q) | |
4345 | break; | |
4346 | ||
22e932f4 | 4347 | if (!sd_id128_equal(p->type.uuid, q->type.uuid)) |
e594a3b1 LP |
4348 | continue; |
4349 | ||
4350 | k++; | |
4351 | } | |
4352 | ||
22e932f4 | 4353 | plaintext.type_uuid = p->type.uuid; |
e594a3b1 LP |
4354 | plaintext.counter = htole64(k); |
4355 | ||
ade99252 KK |
4356 | hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes), |
4357 | &plaintext, | |
4358 | k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
4359 | result.md); | |
e594a3b1 LP |
4360 | |
4361 | /* Take the first half, mark it as v4 UUID */ | |
4362 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
4363 | result.id = id128_make_v4_uuid(result.id); | |
4364 | ||
4365 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
4366 | LIST_FOREACH(partitions, q, context->partitions) { | |
4367 | if (p == q) | |
4368 | continue; | |
4369 | ||
580f48cc | 4370 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 4371 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
4372 | |
4373 | r = sd_id128_randomize(&result.id); | |
4374 | if (r < 0) | |
4375 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
4376 | ||
4377 | break; | |
4378 | } | |
4379 | } | |
4380 | ||
4381 | *ret = result.id; | |
4382 | return 0; | |
4383 | } | |
4384 | ||
4385 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
4386 | _cleanup_free_ char *label = NULL; | |
4387 | const char *prefix; | |
4388 | unsigned k = 1; | |
4389 | ||
4390 | assert(context); | |
4391 | assert(p); | |
4392 | assert(ret); | |
4393 | ||
22e932f4 | 4394 | prefix = gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
4395 | if (!prefix) |
4396 | prefix = "linux"; | |
4397 | ||
4398 | for (;;) { | |
4399 | const char *ll = label ?: prefix; | |
4400 | bool retry = false; | |
e594a3b1 LP |
4401 | |
4402 | LIST_FOREACH(partitions, q, context->partitions) { | |
4403 | if (p == q) | |
4404 | break; | |
4405 | ||
4406 | if (streq_ptr(ll, q->current_label) || | |
4407 | streq_ptr(ll, q->new_label)) { | |
4408 | retry = true; | |
4409 | break; | |
4410 | } | |
4411 | } | |
4412 | ||
4413 | if (!retry) | |
4414 | break; | |
4415 | ||
4416 | label = mfree(label); | |
e594a3b1 LP |
4417 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
4418 | return log_oom(); | |
4419 | } | |
4420 | ||
4421 | if (!label) { | |
4422 | label = strdup(prefix); | |
4423 | if (!label) | |
4424 | return log_oom(); | |
4425 | } | |
4426 | ||
4427 | *ret = TAKE_PTR(label); | |
4428 | return 0; | |
4429 | } | |
4430 | ||
4431 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
e594a3b1 LP |
4432 | int r; |
4433 | ||
4434 | assert(context); | |
4435 | ||
4436 | LIST_FOREACH(partitions, p, context->partitions) { | |
15cad3a2 DDM |
4437 | sd_id128_t uuid; |
4438 | ||
e594a3b1 LP |
4439 | /* Never touch foreign partitions */ |
4440 | if (PARTITION_IS_FOREIGN(p)) { | |
4441 | p->new_uuid = p->current_uuid; | |
4442 | ||
4443 | if (p->current_label) { | |
78eee6ce LP |
4444 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
4445 | if (r < 0) | |
4446 | return r; | |
e594a3b1 LP |
4447 | } |
4448 | ||
4449 | continue; | |
4450 | } | |
4451 | ||
4452 | if (!sd_id128_is_null(p->current_uuid)) | |
15cad3a2 DDM |
4453 | p->new_uuid = uuid = p->current_uuid; /* Never change initialized UUIDs */ |
4454 | else if (p->new_uuid_is_set) | |
4455 | uuid = p->new_uuid; | |
4456 | else { | |
12963533 | 4457 | /* Not explicitly set by user! */ |
15cad3a2 | 4458 | r = partition_acquire_uuid(context, p, &uuid); |
e594a3b1 LP |
4459 | if (r < 0) |
4460 | return r; | |
11749b61 | 4461 | |
15cad3a2 DDM |
4462 | /* The final verity hash/data UUIDs can only be determined after formatting the |
4463 | * verity hash partition. However, we still want to use the generated partition UUID | |
4464 | * to derive other UUIDs to keep things unique and reproducible, so we always | |
4465 | * generate a UUID if none is set, but we only use it as the actual partition UUID if | |
4466 | * verity is not configured. */ | |
4467 | if (!IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) { | |
4468 | p->new_uuid = uuid; | |
4469 | p->new_uuid_is_set = true; | |
4470 | } | |
e594a3b1 LP |
4471 | } |
4472 | ||
8bbbdfd7 DDM |
4473 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", |
4474 | * keyed off the partition UUID. */ | |
15cad3a2 | 4475 | r = derive_uuid(uuid, "file-system-uuid", &p->fs_uuid); |
8bbbdfd7 DDM |
4476 | if (r < 0) |
4477 | return r; | |
4478 | ||
15cad3a2 DDM |
4479 | if (p->encrypt != ENCRYPT_OFF) { |
4480 | r = derive_uuid(uuid, "luks-uuid", &p->luks_uuid); | |
4481 | if (r < 0) | |
4482 | return r; | |
4483 | } | |
4484 | ||
e594a3b1 | 4485 | if (!isempty(p->current_label)) { |
78eee6ce LP |
4486 | /* never change initialized labels */ |
4487 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
4488 | if (r < 0) | |
4489 | return r; | |
12963533 TH |
4490 | } else if (!p->new_label) { |
4491 | /* Not explicitly set by user! */ | |
4492 | ||
e594a3b1 LP |
4493 | r = partition_acquire_label(context, p, &p->new_label); |
4494 | if (r < 0) | |
4495 | return r; | |
4496 | } | |
4497 | } | |
4498 | ||
4499 | return 0; | |
4500 | } | |
4501 | ||
e73309c5 LP |
4502 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
4503 | _cleanup_free_ char *a = NULL; | |
4504 | ||
4505 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
4506 | uint64_t bit = UINT64_C(1) << i; | |
4507 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
4508 | ||
4509 | if (!FLAGS_SET(flags, bit)) | |
4510 | continue; | |
4511 | ||
4512 | xsprintf(buf, "%u", i); | |
4513 | if (!strextend_with_separator(&a, ",", buf)) | |
4514 | return -ENOMEM; | |
4515 | } | |
4516 | ||
4517 | return fdisk_partition_set_attrs(q, a); | |
4518 | } | |
4519 | ||
1c41c1dc LP |
4520 | static uint64_t partition_merge_flags(Partition *p) { |
4521 | uint64_t f; | |
4522 | ||
4523 | assert(p); | |
4524 | ||
4525 | f = p->gpt_flags; | |
4526 | ||
ff0771bf | 4527 | if (p->no_auto >= 0) { |
22e932f4 | 4528 | if (gpt_partition_type_knows_no_auto(p->type)) |
92e72028 | 4529 | SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto); |
ff0771bf | 4530 | else { |
b7416360 | 4531 | char buffer[SD_ID128_UUID_STRING_MAX]; |
ff0771bf LP |
4532 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", |
4533 | yes_no(p->no_auto), | |
22e932f4 | 4534 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
ff0771bf LP |
4535 | } |
4536 | } | |
4537 | ||
1c41c1dc | 4538 | if (p->read_only >= 0) { |
22e932f4 | 4539 | if (gpt_partition_type_knows_read_only(p->type)) |
92e72028 | 4540 | SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only); |
1c41c1dc | 4541 | else { |
b7416360 | 4542 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4543 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", |
4544 | yes_no(p->read_only), | |
22e932f4 | 4545 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4546 | } |
4547 | } | |
4548 | ||
4549 | if (p->growfs >= 0) { | |
22e932f4 | 4550 | if (gpt_partition_type_knows_growfs(p->type)) |
92e72028 | 4551 | SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs); |
1c41c1dc | 4552 | else { |
b7416360 | 4553 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4554 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", |
4555 | yes_no(p->growfs), | |
22e932f4 | 4556 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4557 | } |
4558 | } | |
4559 | ||
4560 | return f; | |
4561 | } | |
4562 | ||
f28d4f42 | 4563 | static int context_mangle_partitions(Context *context) { |
f28d4f42 | 4564 | int r; |
e594a3b1 LP |
4565 | |
4566 | assert(context); | |
4567 | ||
e594a3b1 LP |
4568 | LIST_FOREACH(partitions, p, context->partitions) { |
4569 | if (p->dropped) | |
4570 | continue; | |
4571 | ||
8275334b | 4572 | if (partition_defer(p)) |
81d1098b DDM |
4573 | continue; |
4574 | ||
e594a3b1 LP |
4575 | assert(p->new_size != UINT64_MAX); |
4576 | assert(p->offset != UINT64_MAX); | |
4577 | assert(p->partno != UINT64_MAX); | |
4578 | ||
4579 | if (PARTITION_EXISTS(p)) { | |
4580 | bool changed = false; | |
4581 | ||
4582 | assert(p->current_partition); | |
4583 | ||
4584 | if (p->new_size != p->current_size) { | |
4585 | assert(p->new_size >= p->current_size); | |
994b3031 | 4586 | assert(p->new_size % context->sector_size == 0); |
e594a3b1 LP |
4587 | |
4588 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
4589 | if (r < 0) | |
4590 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4591 | ||
994b3031 | 4592 | r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size); |
e594a3b1 LP |
4593 | if (r < 0) |
4594 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4595 | ||
4596 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
4597 | changed = true; | |
4598 | } | |
4599 | ||
4600 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
b7416360 | 4601 | r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4602 | if (r < 0) |
4603 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4604 | ||
4605 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
4606 | changed = true; | |
4607 | } | |
4608 | ||
4609 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 4610 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
4611 | if (r < 0) |
4612 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4613 | ||
4614 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
4615 | changed = true; | |
4616 | } | |
4617 | ||
4618 | if (changed) { | |
4619 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
4620 | ||
4621 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
4622 | if (r < 0) | |
4623 | return log_error_errno(r, "Failed to update partition: %m"); | |
4624 | } | |
4625 | } else { | |
4626 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
4627 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
e594a3b1 LP |
4628 | |
4629 | assert(!p->new_partition); | |
994b3031 LP |
4630 | assert(p->offset % context->sector_size == 0); |
4631 | assert(p->new_size % context->sector_size == 0); | |
be9ce018 | 4632 | assert(p->new_label); |
e594a3b1 LP |
4633 | |
4634 | t = fdisk_new_parttype(); | |
4635 | if (!t) | |
4636 | return log_oom(); | |
4637 | ||
22e932f4 | 4638 | r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type.uuid)); |
e594a3b1 LP |
4639 | if (r < 0) |
4640 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
4641 | ||
4642 | q = fdisk_new_partition(); | |
4643 | if (!q) | |
4644 | return log_oom(); | |
4645 | ||
4646 | r = fdisk_partition_set_type(q, t); | |
4647 | if (r < 0) | |
4648 | return log_error_errno(r, "Failed to set partition type: %m"); | |
4649 | ||
4650 | r = fdisk_partition_size_explicit(q, true); | |
4651 | if (r < 0) | |
4652 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4653 | ||
994b3031 | 4654 | r = fdisk_partition_set_start(q, p->offset / context->sector_size); |
e594a3b1 LP |
4655 | if (r < 0) |
4656 | return log_error_errno(r, "Failed to position partition: %m"); | |
4657 | ||
994b3031 | 4658 | r = fdisk_partition_set_size(q, p->new_size / context->sector_size); |
e594a3b1 LP |
4659 | if (r < 0) |
4660 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4661 | ||
4662 | r = fdisk_partition_set_partno(q, p->partno); | |
4663 | if (r < 0) | |
4664 | return log_error_errno(r, "Failed to set partition number: %m"); | |
4665 | ||
b7416360 | 4666 | r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4667 | if (r < 0) |
4668 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4669 | ||
be9ce018 | 4670 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
4671 | if (r < 0) |
4672 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4673 | ||
ff0771bf | 4674 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 4675 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
4676 | if (r < 0) |
4677 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
4678 | ||
5b5109e2 | 4679 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
4680 | |
4681 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
4682 | if (r < 0) | |
4683 | return log_error_errno(r, "Failed to add partition: %m"); | |
4684 | ||
4685 | assert(!p->new_partition); | |
4686 | p->new_partition = TAKE_PTR(q); | |
4687 | } | |
4688 | } | |
4689 | ||
f28d4f42 LP |
4690 | return 0; |
4691 | } | |
4692 | ||
62108348 | 4693 | static int split_name_printf(Partition *p, char **ret) { |
4cee8333 DDM |
4694 | assert(p); |
4695 | ||
4696 | const Specifier table[] = { | |
22e932f4 DDM |
4697 | { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type.uuid) }, |
4698 | { 'T', specifier_id128, &p->type.uuid }, | |
4cee8333 DDM |
4699 | { 'U', specifier_id128, &p->new_uuid }, |
4700 | { 'n', specifier_uint64, &p->partno }, | |
4701 | ||
4702 | COMMON_SYSTEM_SPECIFIERS, | |
4703 | {} | |
4704 | }; | |
4705 | ||
62108348 | 4706 | return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, ret); |
4cee8333 DDM |
4707 | } |
4708 | ||
62108348 DDM |
4709 | static int split_node(const char *node, char **ret_base, char **ret_ext) { |
4710 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
4711 | char *e; | |
4712 | int r; | |
4713 | ||
4714 | assert(node); | |
4715 | assert(ret_base); | |
4716 | assert(ret_ext); | |
4717 | ||
4718 | r = path_extract_filename(node, &base); | |
4719 | if (r == O_DIRECTORY || r == -EADDRNOTAVAIL) | |
4720 | return log_error_errno(r, "Device node %s cannot be a directory", node); | |
4721 | if (r < 0) | |
4722 | return log_error_errno(r, "Failed to extract filename from %s: %m", node); | |
4723 | ||
4724 | e = endswith(base, ".raw"); | |
4725 | if (e) { | |
4726 | ext = strdup(e); | |
4727 | if (!ext) | |
4728 | return log_oom(); | |
4729 | ||
4730 | *e = 0; | |
4731 | } | |
4732 | ||
4733 | *ret_base = TAKE_PTR(base); | |
4734 | *ret_ext = TAKE_PTR(ext); | |
4735 | ||
4736 | return 0; | |
4cee8333 DDM |
4737 | } |
4738 | ||
4739 | static int split_name_resolve(Context *context) { | |
62108348 | 4740 | _cleanup_free_ char *parent = NULL, *base = NULL, *ext = NULL; |
4cee8333 DDM |
4741 | int r; |
4742 | ||
62108348 | 4743 | assert(context); |
62108348 | 4744 | |
cc751c75 | 4745 | r = path_extract_directory(context->node, &parent); |
62108348 | 4746 | if (r < 0 && r != -EDESTADDRREQ) |
cc751c75 | 4747 | return log_error_errno(r, "Failed to extract directory from %s: %m", context->node); |
62108348 | 4748 | |
cc751c75 | 4749 | r = split_node(context->node, &base, &ext); |
62108348 DDM |
4750 | if (r < 0) |
4751 | return r; | |
4752 | ||
4cee8333 | 4753 | LIST_FOREACH(partitions, p, context->partitions) { |
62108348 DDM |
4754 | _cleanup_free_ char *resolved = NULL; |
4755 | ||
4cee8333 DDM |
4756 | if (p->dropped) |
4757 | continue; | |
4758 | ||
4759 | if (!p->split_name_format) | |
4760 | continue; | |
4761 | ||
62108348 | 4762 | r = split_name_printf(p, &resolved); |
4cee8333 DDM |
4763 | if (r < 0) |
4764 | return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format); | |
62108348 DDM |
4765 | |
4766 | if (parent) | |
4767 | p->split_path = strjoin(parent, "/", base, ".", resolved, ext); | |
4768 | else | |
4769 | p->split_path = strjoin(base, ".", resolved, ext); | |
4770 | if (!p->split_path) | |
4771 | return log_oom(); | |
4cee8333 DDM |
4772 | } |
4773 | ||
4774 | LIST_FOREACH(partitions, p, context->partitions) { | |
62108348 | 4775 | if (!p->split_path) |
4cee8333 DDM |
4776 | continue; |
4777 | ||
4778 | LIST_FOREACH(partitions, q, context->partitions) { | |
4779 | if (p == q) | |
4780 | continue; | |
4781 | ||
62108348 | 4782 | if (!q->split_path) |
4cee8333 DDM |
4783 | continue; |
4784 | ||
62108348 | 4785 | if (!streq(p->split_path, q->split_path)) |
4cee8333 DDM |
4786 | continue; |
4787 | ||
4788 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
4789 | "%s and %s have the same resolved split name \"%s\", refusing", | |
62108348 | 4790 | p->definition_path, q->definition_path, p->split_path); |
4cee8333 DDM |
4791 | } |
4792 | } | |
4793 | ||
4794 | return 0; | |
4795 | } | |
4796 | ||
4cee8333 | 4797 | static int context_split(Context *context) { |
254d1313 | 4798 | int fd = -EBADF, r; |
4cee8333 DDM |
4799 | |
4800 | if (!arg_split) | |
4801 | return 0; | |
4802 | ||
4803 | assert(context); | |
4cee8333 DDM |
4804 | |
4805 | /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled | |
4806 | * in after they've been generated. */ | |
4807 | ||
4808 | r = split_name_resolve(context); | |
4809 | if (r < 0) | |
4810 | return r; | |
4811 | ||
4cee8333 | 4812 | LIST_FOREACH(partitions, p, context->partitions) { |
254d1313 | 4813 | _cleanup_close_ int fdt = -EBADF; |
4cee8333 DDM |
4814 | |
4815 | if (p->dropped) | |
4816 | continue; | |
4817 | ||
62108348 | 4818 | if (!p->split_path) |
4cee8333 DDM |
4819 | continue; |
4820 | ||
8275334b | 4821 | if (partition_defer(p)) |
81d1098b DDM |
4822 | continue; |
4823 | ||
62108348 | 4824 | fdt = open(p->split_path, O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL, 0666); |
4cee8333 | 4825 | if (fdt < 0) |
62108348 | 4826 | return log_error_errno(fdt, "Failed to open split partition file %s: %m", p->split_path); |
4cee8333 DDM |
4827 | |
4828 | if (fd < 0) | |
4829 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
4830 | ||
4831 | if (lseek(fd, p->offset, SEEK_SET) < 0) | |
4832 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
4833 | ||
a673b056 | 4834 | r = copy_bytes(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES); |
4cee8333 | 4835 | if (r < 0) |
62108348 | 4836 | return log_error_errno(r, "Failed to copy to split partition %s: %m", p->split_path); |
4cee8333 DDM |
4837 | } |
4838 | ||
4839 | return 0; | |
4840 | } | |
4841 | ||
cc751c75 | 4842 | static int context_write_partition_table(Context *context) { |
f28d4f42 LP |
4843 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; |
4844 | int capable, r; | |
4845 | ||
4846 | assert(context); | |
4847 | ||
cc751c75 | 4848 | if (!context->from_scratch && !context_changed(context)) { |
f28d4f42 LP |
4849 | log_info("No changes."); |
4850 | return 0; | |
4851 | } | |
4852 | ||
4853 | if (arg_dry_run) { | |
4854 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
4855 | return 0; | |
4856 | } | |
4857 | ||
4858 | log_info("Applying changes."); | |
4859 | ||
cc751c75 | 4860 | if (context->from_scratch) { |
81873a6b LP |
4861 | r = context_wipe_range(context, 0, context->total); |
4862 | if (r < 0) | |
4863 | return r; | |
4864 | ||
4865 | log_info("Wiped block device."); | |
4866 | ||
0dce448b LB |
4867 | if (arg_discard) { |
4868 | r = context_discard_range(context, 0, context->total); | |
4869 | if (r == -EOPNOTSUPP) | |
4870 | log_info("Storage does not support discard, not discarding entire block device data."); | |
4871 | else if (r < 0) | |
4872 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
4873 | else if (r > 0) | |
4874 | log_info("Discarded entire block device."); | |
4875 | } | |
f28d4f42 LP |
4876 | } |
4877 | ||
4878 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
4879 | if (r < 0) | |
4880 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
4881 | ||
4882 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
4883 | * gaps between partitions, just to be sure. */ | |
cc751c75 | 4884 | r = context_wipe_and_discard(context); |
f28d4f42 LP |
4885 | if (r < 0) |
4886 | return r; | |
4887 | ||
4888 | r = context_copy_blocks(context); | |
4889 | if (r < 0) | |
4890 | return r; | |
4891 | ||
4892 | r = context_mkfs(context); | |
4893 | if (r < 0) | |
4894 | return r; | |
4895 | ||
4896 | r = context_mangle_partitions(context); | |
4897 | if (r < 0) | |
4898 | return r; | |
4899 | ||
e594a3b1 LP |
4900 | log_info("Writing new partition table."); |
4901 | ||
4902 | r = fdisk_write_disklabel(context->fdisk_context); | |
4903 | if (r < 0) | |
4904 | return log_error_errno(r, "Failed to write partition table: %m"); | |
4905 | ||
911ba624 | 4906 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
4907 | if (capable == -ENOTBLK) |
4908 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
4909 | else if (capable < 0) | |
911ba624 | 4910 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 4911 | else if (capable > 0) { |
e594a3b1 LP |
4912 | log_info("Telling kernel to reread partition table."); |
4913 | ||
cc751c75 | 4914 | if (context->from_scratch) |
e594a3b1 LP |
4915 | r = fdisk_reread_partition_table(context->fdisk_context); |
4916 | else | |
4917 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
4918 | if (r < 0) | |
4919 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
4920 | } else | |
4921 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
4922 | ||
4923 | log_info("All done."); | |
4924 | ||
4925 | return 0; | |
4926 | } | |
4927 | ||
4928 | static int context_read_seed(Context *context, const char *root) { | |
4929 | int r; | |
4930 | ||
4931 | assert(context); | |
4932 | ||
4933 | if (!sd_id128_is_null(context->seed)) | |
4934 | return 0; | |
4935 | ||
4936 | if (!arg_randomize) { | |
5ee37b70 YW |
4937 | r = id128_get_machine(root, &context->seed); |
4938 | if (r >= 0) | |
4939 | return 0; | |
e594a3b1 | 4940 | |
5ee37b70 YW |
4941 | if (!ERRNO_IS_MACHINE_ID_UNSET(r)) |
4942 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
74e795ee | 4943 | |
5ee37b70 | 4944 | log_info("No machine ID set, using randomized partition UUIDs."); |
e594a3b1 LP |
4945 | } |
4946 | ||
4947 | r = sd_id128_randomize(&context->seed); | |
4948 | if (r < 0) | |
4949 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
4950 | ||
4951 | return 0; | |
4952 | } | |
4953 | ||
cc751c75 | 4954 | static int context_factory_reset(Context *context) { |
e594a3b1 LP |
4955 | size_t n = 0; |
4956 | int r; | |
4957 | ||
4958 | assert(context); | |
4959 | ||
4960 | if (arg_factory_reset <= 0) | |
4961 | return 0; | |
4962 | ||
cc751c75 | 4963 | if (context->from_scratch) /* Nothing to reset if we start from scratch */ |
e594a3b1 LP |
4964 | return 0; |
4965 | ||
4966 | if (arg_dry_run) { | |
4967 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
4968 | return 0; | |
4969 | } | |
4970 | ||
4971 | log_info("Applying factory reset."); | |
4972 | ||
4973 | LIST_FOREACH(partitions, p, context->partitions) { | |
4974 | ||
4975 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
4976 | continue; | |
4977 | ||
4978 | assert(p->partno != UINT64_MAX); | |
4979 | ||
4980 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
4981 | ||
4982 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
4983 | if (r < 0) | |
4984 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
4985 | ||
4986 | n++; | |
4987 | } | |
4988 | ||
4989 | if (n == 0) { | |
4990 | log_info("Factory reset requested, but no partitions to delete found."); | |
4991 | return 0; | |
4992 | } | |
4993 | ||
4994 | r = fdisk_write_disklabel(context->fdisk_context); | |
4995 | if (r < 0) | |
4996 | return log_error_errno(r, "Failed to write disk label: %m"); | |
4997 | ||
4998 | log_info("Successfully deleted %zu partitions.", n); | |
4999 | return 1; | |
5000 | } | |
5001 | ||
5002 | static int context_can_factory_reset(Context *context) { | |
e594a3b1 LP |
5003 | assert(context); |
5004 | ||
5005 | LIST_FOREACH(partitions, p, context->partitions) | |
5006 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
5007 | return true; | |
5008 | ||
5009 | return false; | |
5010 | } | |
5011 | ||
5c08da58 LP |
5012 | static int resolve_copy_blocks_auto_candidate( |
5013 | dev_t partition_devno, | |
22e932f4 | 5014 | GptPartitionType partition_type, |
5c08da58 LP |
5015 | dev_t restrict_devno, |
5016 | sd_id128_t *ret_uuid) { | |
5017 | ||
5018 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
254d1313 | 5019 | _cleanup_close_ int fd = -EBADF; |
ca822829 YW |
5020 | _cleanup_free_ char *p = NULL; |
5021 | const char *pttype, *t; | |
5c08da58 LP |
5022 | sd_id128_t pt_parsed, u; |
5023 | blkid_partition pp; | |
5024 | dev_t whole_devno; | |
5025 | blkid_partlist pl; | |
5c08da58 LP |
5026 | int r; |
5027 | ||
5028 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
5029 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
5030 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
5031 | * one of the two. */ | |
5032 | ||
5033 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
5034 | if (r < 0) | |
5035 | return log_error_errno( | |
5036 | r, | |
5037 | "Unable to determine containing block device of partition %u:%u: %m", | |
5038 | major(partition_devno), minor(partition_devno)); | |
5039 | ||
5040 | if (restrict_devno != (dev_t) -1 && | |
5041 | restrict_devno != whole_devno) | |
5042 | return log_error_errno( | |
5043 | SYNTHETIC_ERRNO(EPERM), | |
5044 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
5045 | major(partition_devno), minor(partition_devno), | |
5046 | major(restrict_devno), minor(restrict_devno)); | |
5047 | ||
ca822829 | 5048 | fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p); |
5c08da58 | 5049 | if (r < 0) |
ca822829 YW |
5050 | return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m", |
5051 | DEVNUM_FORMAT_VAL(whole_devno)); | |
5c08da58 LP |
5052 | |
5053 | b = blkid_new_probe(); | |
5054 | if (!b) | |
5055 | return log_oom(); | |
5056 | ||
5057 | errno = 0; | |
5058 | r = blkid_probe_set_device(b, fd, 0, 0); | |
5059 | if (r != 0) | |
5060 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
5061 | ||
5062 | (void) blkid_probe_enable_partitions(b, 1); | |
5063 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
5064 | ||
5065 | errno = 0; | |
5066 | r = blkid_do_safeprobe(b); | |
2e3944b8 LP |
5067 | if (r == _BLKID_SAFEPROBE_ERROR) |
5068 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
5069 | if (IN_SET(r, _BLKID_SAFEPROBE_AMBIGUOUS, _BLKID_SAFEPROBE_NOT_FOUND)) { | |
5c08da58 LP |
5070 | log_debug("Didn't find partition table on block device '%s'.", p); |
5071 | return false; | |
5072 | } | |
2e3944b8 LP |
5073 | |
5074 | assert(r == _BLKID_SAFEPROBE_FOUND); | |
5c08da58 LP |
5075 | |
5076 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
5077 | if (!streq_ptr(pttype, "gpt")) { | |
5078 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
5079 | return false; | |
5080 | } | |
5081 | ||
5082 | errno = 0; | |
5083 | pl = blkid_probe_get_partitions(b); | |
5084 | if (!pl) | |
5085 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
5c08da58 LP |
5086 | |
5087 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
5088 | if (!pp) { | |
5089 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
5090 | major(partition_devno), minor(partition_devno), p); | |
5091 | return false; | |
5092 | } | |
5093 | ||
5094 | t = blkid_partition_get_type_string(pp); | |
5095 | if (isempty(t)) { | |
5096 | log_debug("Partition %u:%u has no type on '%s'.", | |
5097 | major(partition_devno), minor(partition_devno), p); | |
5098 | return false; | |
5099 | } | |
5100 | ||
5101 | r = sd_id128_from_string(t, &pt_parsed); | |
5102 | if (r < 0) { | |
5103 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
5104 | return false; | |
5105 | } | |
5106 | ||
22e932f4 | 5107 | if (!sd_id128_equal(pt_parsed, partition_type.uuid)) { |
5c08da58 LP |
5108 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", |
5109 | major(partition_devno), minor(partition_devno), | |
22e932f4 | 5110 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type.uuid)); |
5c08da58 LP |
5111 | return false; |
5112 | } | |
5113 | ||
e3b9a5ff LP |
5114 | r = blkid_partition_get_uuid_id128(pp, &u); |
5115 | if (r == -ENXIO) { | |
5116 | log_debug_errno(r, "Partition " DEVNUM_FORMAT_STR " has no UUID.", DEVNUM_FORMAT_VAL(partition_devno)); | |
5c08da58 LP |
5117 | return false; |
5118 | } | |
5c08da58 | 5119 | if (r < 0) { |
e3b9a5ff | 5120 | log_debug_errno(r, "Failed to read partition UUID of " DEVNUM_FORMAT_STR ": %m", DEVNUM_FORMAT_VAL(partition_devno)); |
5c08da58 LP |
5121 | return false; |
5122 | } | |
5123 | ||
e3b9a5ff LP |
5124 | log_debug("Automatically found partition " DEVNUM_FORMAT_STR " of right type " SD_ID128_FORMAT_STR ".", |
5125 | DEVNUM_FORMAT_VAL(partition_devno), | |
5c08da58 LP |
5126 | SD_ID128_FORMAT_VAL(pt_parsed)); |
5127 | ||
5128 | if (ret_uuid) | |
5129 | *ret_uuid = u; | |
5130 | ||
5131 | return true; | |
5132 | } | |
5133 | ||
5134 | static int find_backing_devno( | |
5135 | const char *path, | |
5136 | const char *root, | |
5137 | dev_t *ret) { | |
5138 | ||
5139 | _cleanup_free_ char *resolved = NULL; | |
5140 | int r; | |
5141 | ||
5142 | assert(path); | |
5143 | ||
f461a28d | 5144 | r = chase(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); |
5c08da58 LP |
5145 | if (r < 0) |
5146 | return r; | |
5147 | ||
5148 | r = path_is_mount_point(resolved, NULL, 0); | |
5149 | if (r < 0) | |
5150 | return r; | |
5151 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
5152 | return -ENOENT; | |
5153 | ||
5154 | r = get_block_device(resolved, ret); | |
5155 | if (r < 0) | |
5156 | return r; | |
5157 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
5158 | return -ENOENT; | |
5159 | ||
5160 | return 0; | |
5161 | } | |
5162 | ||
5163 | static int resolve_copy_blocks_auto( | |
22e932f4 | 5164 | GptPartitionType type, |
5c08da58 LP |
5165 | const char *root, |
5166 | dev_t restrict_devno, | |
1a037ba2 | 5167 | dev_t *ret_devno, |
5c08da58 LP |
5168 | sd_id128_t *ret_uuid) { |
5169 | ||
5170 | const char *try1 = NULL, *try2 = NULL; | |
5171 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
5172 | _cleanup_(closedirp) DIR *d = NULL; | |
5173 | sd_id128_t found_uuid = SD_ID128_NULL; | |
5174 | dev_t devno, found = 0; | |
5175 | int r; | |
5176 | ||
5c08da58 LP |
5177 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the |
5178 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
5179 | * and restrict block device references in the --image= case to loopback block device we set up. | |
5180 | * | |
5181 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
5182 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
5183 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
5184 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
5185 | ||
5186 | if (restrict_devno == 0) | |
5187 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5188 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
5189 | ||
5190 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching | |
5191 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
5192 | * type matches. */ | |
5193 | ||
22e932f4 | 5194 | if (type.designator == PARTITION_ROOT) |
5c08da58 | 5195 | try1 = "/"; |
22e932f4 | 5196 | else if (type.designator == PARTITION_USR) |
5c08da58 | 5197 | try1 = "/usr/"; |
22e932f4 | 5198 | else if (type.designator == PARTITION_ROOT_VERITY) |
5c08da58 | 5199 | try1 = "/"; |
22e932f4 | 5200 | else if (type.designator == PARTITION_USR_VERITY) |
5c08da58 | 5201 | try1 = "/usr/"; |
22e932f4 | 5202 | else if (type.designator == PARTITION_ESP) { |
5c08da58 LP |
5203 | try1 = "/efi/"; |
5204 | try2 = "/boot/"; | |
22e932f4 | 5205 | } else if (type.designator == PARTITION_XBOOTLDR) |
5c08da58 LP |
5206 | try1 = "/boot/"; |
5207 | else | |
5208 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
5209 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
22e932f4 | 5210 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5211 | |
5212 | r = find_backing_devno(try1, root, &devno); | |
5213 | if (r == -ENOENT && try2) | |
5214 | r = find_backing_devno(try2, root, &devno); | |
5215 | if (r < 0) | |
5216 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
22e932f4 | 5217 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5218 | |
5219 | xsprintf_sys_block_path(p, "/slaves", devno); | |
5220 | d = opendir(p); | |
5221 | if (d) { | |
5222 | struct dirent *de; | |
5223 | ||
5224 | for (;;) { | |
5225 | _cleanup_free_ char *q = NULL, *t = NULL; | |
5226 | sd_id128_t u; | |
5227 | dev_t sl; | |
5228 | ||
5229 | errno = 0; | |
5230 | de = readdir_no_dot(d); | |
5231 | if (!de) { | |
5232 | if (errno != 0) | |
5233 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
5234 | ||
5235 | break; | |
5236 | } | |
5237 | ||
5238 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
5239 | continue; | |
5240 | ||
5241 | q = path_join(p, de->d_name, "/dev"); | |
5242 | if (!q) | |
5243 | return log_oom(); | |
5244 | ||
5245 | r = read_one_line_file(q, &t); | |
5246 | if (r < 0) | |
5247 | return log_error_errno(r, "Failed to read %s: %m", q); | |
5248 | ||
7176f06c | 5249 | r = parse_devnum(t, &sl); |
5c08da58 LP |
5250 | if (r < 0) { |
5251 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
5252 | continue; | |
5253 | } | |
5254 | if (major(sl) == 0) { | |
375ffdba | 5255 | log_debug("Device backing %s is special, ignoring.", q); |
5c08da58 LP |
5256 | continue; |
5257 | } | |
5258 | ||
22e932f4 | 5259 | r = resolve_copy_blocks_auto_candidate(sl, type, restrict_devno, &u); |
5c08da58 LP |
5260 | if (r < 0) |
5261 | return r; | |
5262 | if (r > 0) { | |
5263 | /* We found a matching one! */ | |
5264 | if (found != 0) | |
5265 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
5266 | "Multiple matching partitions found, refusing."); | |
5267 | ||
5268 | found = sl; | |
5269 | found_uuid = u; | |
5270 | } | |
5271 | } | |
5272 | } else if (errno != ENOENT) | |
5273 | return log_error_errno(errno, "Failed open %s: %m", p); | |
5274 | else { | |
22e932f4 | 5275 | r = resolve_copy_blocks_auto_candidate(devno, type, restrict_devno, &found_uuid); |
5c08da58 LP |
5276 | if (r < 0) |
5277 | return r; | |
5278 | if (r > 0) | |
5279 | found = devno; | |
5280 | } | |
5281 | ||
5282 | if (found == 0) | |
5283 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
5284 | "Unable to automatically discover suitable partition to copy blocks from."); | |
5285 | ||
1a037ba2 YW |
5286 | if (ret_devno) |
5287 | *ret_devno = found; | |
5c08da58 LP |
5288 | |
5289 | if (ret_uuid) | |
5290 | *ret_uuid = found_uuid; | |
5291 | ||
5292 | return 0; | |
5293 | } | |
5294 | ||
5295 | static int context_open_copy_block_paths( | |
5296 | Context *context, | |
5c08da58 LP |
5297 | dev_t restrict_devno) { |
5298 | ||
757bc2e4 LP |
5299 | int r; |
5300 | ||
5301 | assert(context); | |
5302 | ||
5303 | LIST_FOREACH(partitions, p, context->partitions) { | |
254d1313 | 5304 | _cleanup_close_ int source_fd = -EBADF; |
5c08da58 LP |
5305 | _cleanup_free_ char *opened = NULL; |
5306 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
5307 | uint64_t size; |
5308 | struct stat st; | |
5309 | ||
5310 | assert(p->copy_blocks_fd < 0); | |
5311 | assert(p->copy_blocks_size == UINT64_MAX); | |
5312 | ||
5313 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
5314 | continue; | |
5315 | ||
5c08da58 | 5316 | if (p->copy_blocks_path) { |
757bc2e4 | 5317 | |
f461a28d | 5318 | source_fd = chase_and_open(p->copy_blocks_path, p->copy_blocks_root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
5c08da58 LP |
5319 | if (source_fd < 0) |
5320 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 5321 | |
5c08da58 LP |
5322 | if (fstat(source_fd, &st) < 0) |
5323 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
5324 | ||
5325 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
5326 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5327 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
5328 | ||
5329 | } else if (p->copy_blocks_auto) { | |
03f5e501 | 5330 | dev_t devno = 0; /* Fake initialization to appease gcc. */ |
5c08da58 | 5331 | |
22e932f4 | 5332 | r = resolve_copy_blocks_auto(p->type, p->copy_blocks_root, restrict_devno, &devno, &uuid); |
5c08da58 LP |
5333 | if (r < 0) |
5334 | return r; | |
03f5e501 | 5335 | assert(devno != 0); |
5c08da58 | 5336 | |
ca822829 | 5337 | source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
1a037ba2 | 5338 | if (r < 0) |
ca822829 YW |
5339 | return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m", |
5340 | DEVNUM_FORMAT_VAL(devno)); | |
5c08da58 LP |
5341 | |
5342 | if (fstat(source_fd, &st) < 0) | |
5343 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
1a037ba2 | 5344 | } else |
5c08da58 | 5345 | continue; |
757bc2e4 LP |
5346 | |
5347 | if (S_ISDIR(st.st_mode)) { | |
ca822829 YW |
5348 | _cleanup_free_ char *bdev = NULL; |
5349 | dev_t devt; | |
757bc2e4 LP |
5350 | |
5351 | /* If the file is a directory, automatically find the backing block device */ | |
5352 | ||
5353 | if (major(st.st_dev) != 0) | |
ca822829 | 5354 | devt = st.st_dev; |
757bc2e4 | 5355 | else { |
757bc2e4 | 5356 | /* Special support for btrfs */ |
757bc2e4 | 5357 | r = btrfs_get_block_device_fd(source_fd, &devt); |
67f0ac8c | 5358 | if (r == -EUCLEAN) |
5c08da58 | 5359 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 5360 | if (r < 0) |
5c08da58 | 5361 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 | 5362 | } |
757bc2e4 LP |
5363 | |
5364 | safe_close(source_fd); | |
5365 | ||
ca822829 YW |
5366 | source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev); |
5367 | if (r < 0) | |
5368 | return log_error_errno(r, "Failed to open block device backing '%s': %m", opened); | |
757bc2e4 LP |
5369 | |
5370 | if (fstat(source_fd, &st) < 0) | |
5371 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
757bc2e4 LP |
5372 | } |
5373 | ||
5374 | if (S_ISREG(st.st_mode)) | |
5375 | size = st.st_size; | |
5376 | else if (S_ISBLK(st.st_mode)) { | |
5377 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
5378 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
5379 | } else | |
5c08da58 | 5380 | 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 |
5381 | |
5382 | if (size <= 0) | |
5c08da58 | 5383 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 5384 | if (size % 512 != 0) |
5c08da58 | 5385 | 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 |
5386 | |
5387 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
5388 | p->copy_blocks_size = size; | |
5c08da58 LP |
5389 | |
5390 | free_and_replace(p->copy_blocks_path, opened); | |
5391 | ||
5392 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
11749b61 | 5393 | if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) { |
5c08da58 | 5394 | p->new_uuid = uuid; |
11749b61 DDM |
5395 | p->new_uuid_is_set = true; |
5396 | } | |
757bc2e4 LP |
5397 | } |
5398 | ||
5399 | return 0; | |
5400 | } | |
5401 | ||
c4a87b76 DDM |
5402 | static int fd_apparent_size(int fd, uint64_t *ret) { |
5403 | off_t initial = 0; | |
5404 | uint64_t size = 0; | |
5405 | ||
5406 | assert(fd >= 0); | |
5407 | assert(ret); | |
5408 | ||
5409 | initial = lseek(fd, 0, SEEK_CUR); | |
5410 | if (initial < 0) | |
5411 | return log_error_errno(errno, "Failed to get file offset: %m"); | |
5412 | ||
5413 | for (off_t off = 0;;) { | |
5414 | off_t r; | |
5415 | ||
5416 | r = lseek(fd, off, SEEK_DATA); | |
5417 | if (r < 0 && errno == ENXIO) | |
5418 | /* If errno == ENXIO, that means we've reached the final hole of the file and | |
5419 | * that hole isn't followed by more data. */ | |
5420 | break; | |
5421 | if (r < 0) | |
5422 | return log_error_errno(errno, "Failed to seek data in file from offset %"PRIi64": %m", off); | |
5423 | ||
5424 | off = r; /* Set the offset to the start of the data segment. */ | |
5425 | ||
5426 | /* After copying a potential hole, find the end of the data segment by looking for | |
5427 | * the next hole. If we get ENXIO, we're at EOF. */ | |
5428 | r = lseek(fd, off, SEEK_HOLE); | |
5429 | if (r < 0) { | |
5430 | if (errno == ENXIO) | |
5431 | break; | |
5432 | return log_error_errno(errno, "Failed to seek hole in file from offset %"PRIi64": %m", off); | |
5433 | } | |
5434 | ||
5435 | size += r - off; | |
5436 | off = r; | |
5437 | } | |
5438 | ||
5439 | if (lseek(fd, initial, SEEK_SET) < 0) | |
5440 | return log_error_errno(errno, "Failed to reset file offset: %m"); | |
5441 | ||
5442 | *ret = size; | |
5443 | ||
5444 | return 0; | |
5445 | } | |
5446 | ||
5447 | static int context_minimize(Context *context) { | |
c4a87b76 DDM |
5448 | const char *vt; |
5449 | int r; | |
5450 | ||
5451 | assert(context); | |
5452 | ||
c4a87b76 DDM |
5453 | r = var_tmp_dir(&vt); |
5454 | if (r < 0) | |
5455 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
5456 | ||
5457 | LIST_FOREACH(partitions, p, context->partitions) { | |
b63bd125 | 5458 | _cleanup_hashmap_free_ Hashmap *denylist = NULL; |
e59678b2 | 5459 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
c4a87b76 | 5460 | _cleanup_(unlink_and_freep) char *temp = NULL; |
d3201eb4 | 5461 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
4b8ce14f | 5462 | _cleanup_strv_free_ char **extra_mkfs_options = NULL; |
254d1313 | 5463 | _cleanup_close_ int fd = -EBADF; |
b24bfd6e | 5464 | _cleanup_free_ char *hint = NULL; |
c4a87b76 DDM |
5465 | sd_id128_t fs_uuid; |
5466 | uint64_t fsz; | |
5467 | ||
5468 | if (p->dropped) | |
5469 | continue; | |
5470 | ||
5471 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
5472 | continue; | |
5473 | ||
5474 | if (!p->format) | |
5475 | continue; | |
5476 | ||
5c33b686 | 5477 | if (p->minimize == MINIMIZE_OFF) |
c4a87b76 DDM |
5478 | continue; |
5479 | ||
d3201eb4 DDM |
5480 | if (!partition_needs_populate(p)) |
5481 | continue; | |
5482 | ||
c4a87b76 DDM |
5483 | assert(!p->copy_blocks_path); |
5484 | ||
b24bfd6e DDM |
5485 | (void) partition_hint(p, context->node, &hint); |
5486 | ||
5487 | log_info("Pre-populating %s filesystem of partition %s twice to calculate minimal partition size", | |
5488 | p->format, strna(hint)); | |
5489 | ||
a9af8276 DDM |
5490 | r = make_copy_files_denylist(context, p, &denylist); |
5491 | if (r < 0) | |
5492 | return r; | |
5493 | ||
c4a87b76 DDM |
5494 | r = tempfn_random_child(vt, "repart", &temp); |
5495 | if (r < 0) | |
5496 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
5497 | ||
59e2be46 DDM |
5498 | if (fstype_is_ro(p->format)) |
5499 | fs_uuid = p->fs_uuid; | |
5500 | else { | |
c4a87b76 DDM |
5501 | fd = open(temp, O_CREAT|O_EXCL|O_CLOEXEC|O_RDWR|O_NOCTTY, 0600); |
5502 | if (fd < 0) | |
5503 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
5504 | ||
5505 | /* This may seem huge but it will be created sparse so it doesn't take up any space | |
d3201eb4 | 5506 | * on disk until written to. */ |
c4a87b76 DDM |
5507 | if (ftruncate(fd, 1024ULL * 1024ULL * 1024ULL * 1024ULL) < 0) |
5508 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
5509 | FORMAT_BYTES(1024ULL * 1024ULL * 1024ULL * 1024ULL)); | |
5510 | ||
d3201eb4 DDM |
5511 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, 0, 0, LOCK_EX, &d); |
5512 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
5513 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5514 | ||
c4a87b76 DDM |
5515 | /* We're going to populate this filesystem twice so use a random UUID the first time |
5516 | * to avoid UUID conflicts. */ | |
5517 | r = sd_id128_randomize(&fs_uuid); | |
5518 | if (r < 0) | |
5519 | return r; | |
59e2be46 DDM |
5520 | } |
5521 | ||
d3201eb4 DDM |
5522 | if (!d || fstype_is_ro(p->format)) { |
5523 | if (!mkfs_supports_root_option(p->format)) | |
5524 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
5525 | "Loop device access is required to populate %s filesystems", | |
5526 | p->format); | |
5527 | ||
e59678b2 | 5528 | r = partition_populate_directory(p, denylist, &root); |
c4a87b76 DDM |
5529 | if (r < 0) |
5530 | return r; | |
c4a87b76 DDM |
5531 | } |
5532 | ||
4b8ce14f DDM |
5533 | r = mkfs_options_from_env("REPART", p->format, &extra_mkfs_options); |
5534 | if (r < 0) | |
5535 | return log_error_errno(r, | |
5536 | "Failed to determine mkfs command line options for '%s': %m", | |
5537 | p->format); | |
5538 | ||
e1878ef7 | 5539 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, fs_uuid, |
4b8ce14f | 5540 | arg_discard, context->sector_size, extra_mkfs_options); |
c4a87b76 DDM |
5541 | if (r < 0) |
5542 | return r; | |
5543 | ||
5544 | /* Read-only filesystems are minimal from the first try because they create and size the | |
5545 | * loopback file for us. */ | |
5546 | if (fstype_is_ro(p->format)) { | |
b24bfd6e DDM |
5547 | struct stat st; |
5548 | ||
5549 | if (stat(temp, &st) < 0) | |
5550 | return log_error_errno(errno, "Failed to stat temporary file: %m"); | |
5551 | ||
5552 | log_info("Minimal partition size of %s filesystem of partition %s is %s", | |
5553 | p->format, strna(hint), FORMAT_BYTES(st.st_size)); | |
5554 | ||
c4a87b76 | 5555 | p->copy_blocks_path = TAKE_PTR(temp); |
7d07030e | 5556 | p->copy_blocks_path_is_our_file = true; |
c4a87b76 DDM |
5557 | continue; |
5558 | } | |
5559 | ||
d3201eb4 DDM |
5560 | if (!root) { |
5561 | assert(d); | |
5562 | ||
5563 | r = partition_populate_filesystem(p, d->node, denylist); | |
59e2be46 DDM |
5564 | if (r < 0) |
5565 | return r; | |
5566 | } | |
c4a87b76 DDM |
5567 | |
5568 | /* Other filesystems need to be provided with a pre-sized loopback file and will adapt to | |
5569 | * fully occupy it. Because we gave the filesystem a 1T sparse file, we need to shrink the | |
5570 | * filesystem down to a reasonable size again to fit it in the disk image. While there are | |
5571 | * some filesystems that support shrinking, it doesn't always work properly (e.g. shrinking | |
5572 | * btrfs gives us a 2.0G filesystem regardless of what we put in it). Instead, let's populate | |
5573 | * the filesystem again, but this time, instead of providing the filesystem with a 1T sparse | |
5574 | * loopback file, let's size the loopback file based on the actual data used by the | |
5575 | * filesystem in the sparse file after the first attempt. This should be a good guess of the | |
5576 | * minimal amount of space needed in the filesystem to fit all the required data. | |
5577 | */ | |
5578 | r = fd_apparent_size(fd, &fsz); | |
5579 | if (r < 0) | |
5580 | return r; | |
5581 | ||
5582 | /* Massage the size a bit because just going by actual data used in the sparse file isn't | |
5583 | * fool-proof. */ | |
5584 | fsz = round_up_size(fsz + (fsz / 2), context->grain_size); | |
5585 | if (minimal_size_by_fs_name(p->format) != UINT64_MAX) | |
5586 | fsz = MAX(minimal_size_by_fs_name(p->format), fsz); | |
5587 | ||
b24bfd6e DDM |
5588 | log_info("Minimal partition size of %s filesystem of partition %s is %s", |
5589 | p->format, strna(hint), FORMAT_BYTES(fsz)); | |
5590 | ||
d3201eb4 DDM |
5591 | d = loop_device_unref(d); |
5592 | ||
c4a87b76 DDM |
5593 | /* Erase the previous filesystem first. */ |
5594 | if (ftruncate(fd, 0)) | |
5595 | return log_error_errno(errno, "Failed to erase temporary file: %m"); | |
5596 | ||
5597 | if (ftruncate(fd, fsz)) | |
5598 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", FORMAT_BYTES(fsz)); | |
5599 | ||
d3201eb4 DDM |
5600 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, 0, 0, LOCK_EX, &d); |
5601 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
5602 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5603 | ||
e1878ef7 | 5604 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, p->fs_uuid, |
4b8ce14f | 5605 | arg_discard, context->sector_size, extra_mkfs_options); |
c4a87b76 DDM |
5606 | if (r < 0) |
5607 | return r; | |
5608 | ||
d3201eb4 DDM |
5609 | if (!root) { |
5610 | assert(d); | |
5611 | ||
5612 | r = partition_populate_filesystem(p, d->node, denylist); | |
59e2be46 DDM |
5613 | if (r < 0) |
5614 | return r; | |
5615 | } | |
c4a87b76 DDM |
5616 | |
5617 | p->copy_blocks_path = TAKE_PTR(temp); | |
7d07030e | 5618 | p->copy_blocks_path_is_our_file = true; |
c4a87b76 DDM |
5619 | } |
5620 | ||
5621 | return 0; | |
5622 | } | |
5623 | ||
220780db | 5624 | static int parse_partition_types(const char *p, sd_id128_t **partitions, size_t *n_partitions) { |
81d1098b DDM |
5625 | int r; |
5626 | ||
220780db DDM |
5627 | assert(partitions); |
5628 | assert(n_partitions); | |
5629 | ||
81d1098b DDM |
5630 | for (;;) { |
5631 | _cleanup_free_ char *name = NULL; | |
5632 | GptPartitionType type; | |
5633 | ||
5634 | r = extract_first_word(&p, &name, ",", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
5635 | if (r == 0) | |
5636 | break; | |
5637 | if (r < 0) | |
766f52f2 | 5638 | return log_error_errno(r, "Failed to extract partition type identifier or GUID: %s", p); |
81d1098b DDM |
5639 | |
5640 | r = gpt_partition_type_from_string(name, &type); | |
5641 | if (r < 0) | |
766f52f2 | 5642 | return log_error_errno(r, "'%s' is not a valid partition type identifier or GUID", name); |
81d1098b | 5643 | |
220780db | 5644 | if (!GREEDY_REALLOC(*partitions, *n_partitions + 1)) |
81d1098b DDM |
5645 | return log_oom(); |
5646 | ||
220780db | 5647 | (*partitions)[(*n_partitions)++] = type.uuid; |
81d1098b DDM |
5648 | } |
5649 | ||
5650 | return 0; | |
5651 | } | |
5652 | ||
e594a3b1 LP |
5653 | static int help(void) { |
5654 | _cleanup_free_ char *link = NULL; | |
5655 | int r; | |
5656 | ||
6dadf31d | 5657 | r = terminal_urlify_man("systemd-repart", "8", &link); |
e594a3b1 LP |
5658 | if (r < 0) |
5659 | return log_oom(); | |
5660 | ||
5661 | printf("%s [OPTIONS...] [DEVICE]\n" | |
5662 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
5663 | " -h --help Show this help\n" | |
5664 | " --version Show package version\n" | |
896e678b LP |
5665 | " --no-pager Do not pipe output into a pager\n" |
5666 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 5667 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
5668 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
5669 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 5670 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 5671 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
5672 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
5673 | " them\n" | |
5674 | " --can-factory-reset Test whether factory reset is defined\n" | |
5675 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 5676 | " --image=PATH Operate relative to image file\n" |
84be0c71 LP |
5677 | " --image-policy=POLICY\n" |
5678 | " Specify disk image dissection policy\n" | |
9d252fbb | 5679 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 5680 | " --key-file=PATH Key to use when encrypting partitions\n" |
b456191d DDM |
5681 | " --private-key=PATH Private key to use when generating verity roothash\n" |
5682 | " signatures\n" | |
5683 | " --certificate=PATH PEM certificate to use when generating verity\n" | |
5684 | " roothash signatures\n" | |
889914ef | 5685 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 5686 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 5687 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
02ef97cd LP |
5688 | " --tpm2-public-key=PATH\n" |
5689 | " Enroll signed TPM2 PCR policy against PEM public key\n" | |
5690 | " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n" | |
5691 | " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n" | |
e594a3b1 | 5692 | " --seed=UUID 128bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 5693 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 5694 | " --json=pretty|short|off\n" |
de8231b0 | 5695 | " Generate JSON output\n" |
4cee8333 | 5696 | " --split=BOOL Whether to generate split artifacts\n" |
81d1098b | 5697 | " --include-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 5698 | " Ignore partitions not of the specified types\n" |
81d1098b | 5699 | " --exclude-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 5700 | " Ignore partitions of the specified types\n" |
8275334b | 5701 | " --defer-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 DDM |
5702 | " Take partitions of the specified types into account\n" |
5703 | " but don't populate them yet\n" | |
e1878ef7 | 5704 | " --sector-size=SIZE Set the logical sector size for the image\n" |
bc556335 DDM |
5705 | "\nSee the %s for details.\n", |
5706 | program_invocation_short_name, | |
5707 | ansi_highlight(), | |
5708 | ansi_normal(), | |
5709 | link); | |
e594a3b1 LP |
5710 | |
5711 | return 0; | |
5712 | } | |
5713 | ||
5714 | static int parse_argv(int argc, char *argv[]) { | |
5715 | ||
5716 | enum { | |
5717 | ARG_VERSION = 0x100, | |
896e678b LP |
5718 | ARG_NO_PAGER, |
5719 | ARG_NO_LEGEND, | |
e594a3b1 LP |
5720 | ARG_DRY_RUN, |
5721 | ARG_EMPTY, | |
5722 | ARG_DISCARD, | |
5723 | ARG_FACTORY_RESET, | |
5724 | ARG_CAN_FACTORY_RESET, | |
5725 | ARG_ROOT, | |
252d6267 | 5726 | ARG_IMAGE, |
06e78680 | 5727 | ARG_IMAGE_POLICY, |
e594a3b1 LP |
5728 | ARG_SEED, |
5729 | ARG_PRETTY, | |
5730 | ARG_DEFINITIONS, | |
a26f4a49 | 5731 | ARG_SIZE, |
a015fbe7 | 5732 | ARG_JSON, |
b9df3536 | 5733 | ARG_KEY_FILE, |
b456191d DDM |
5734 | ARG_PRIVATE_KEY, |
5735 | ARG_CERTIFICATE, | |
889914ef LP |
5736 | ARG_TPM2_DEVICE, |
5737 | ARG_TPM2_PCRS, | |
02ef97cd LP |
5738 | ARG_TPM2_PUBLIC_KEY, |
5739 | ARG_TPM2_PUBLIC_KEY_PCRS, | |
4cee8333 | 5740 | ARG_SPLIT, |
81d1098b DDM |
5741 | ARG_INCLUDE_PARTITIONS, |
5742 | ARG_EXCLUDE_PARTITIONS, | |
8275334b | 5743 | ARG_DEFER_PARTITIONS, |
e1878ef7 | 5744 | ARG_SECTOR_SIZE, |
84be0c71 | 5745 | ARG_SKIP_PARTITIONS, |
e594a3b1 LP |
5746 | }; |
5747 | ||
5748 | static const struct option options[] = { | |
02ef97cd LP |
5749 | { "help", no_argument, NULL, 'h' }, |
5750 | { "version", no_argument, NULL, ARG_VERSION }, | |
5751 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
5752 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
5753 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, | |
5754 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
5755 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
5756 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
5757 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
5758 | { "root", required_argument, NULL, ARG_ROOT }, | |
5759 | { "image", required_argument, NULL, ARG_IMAGE }, | |
06e78680 | 5760 | { "image-policy", required_argument, NULL, ARG_IMAGE_POLICY }, |
02ef97cd LP |
5761 | { "seed", required_argument, NULL, ARG_SEED }, |
5762 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
5763 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
5764 | { "size", required_argument, NULL, ARG_SIZE }, | |
5765 | { "json", required_argument, NULL, ARG_JSON }, | |
5766 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, | |
b456191d DDM |
5767 | { "private-key", required_argument, NULL, ARG_PRIVATE_KEY }, |
5768 | { "certificate", required_argument, NULL, ARG_CERTIFICATE }, | |
02ef97cd LP |
5769 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
5770 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
5771 | { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY }, | |
5772 | { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS }, | |
4cee8333 | 5773 | { "split", required_argument, NULL, ARG_SPLIT }, |
81d1098b DDM |
5774 | { "include-partitions", required_argument, NULL, ARG_INCLUDE_PARTITIONS }, |
5775 | { "exclude-partitions", required_argument, NULL, ARG_EXCLUDE_PARTITIONS }, | |
8275334b | 5776 | { "defer-partitions", required_argument, NULL, ARG_DEFER_PARTITIONS }, |
e1878ef7 | 5777 | { "sector-size", required_argument, NULL, ARG_SECTOR_SIZE }, |
e594a3b1 LP |
5778 | {} |
5779 | }; | |
5780 | ||
a26f4a49 | 5781 | int c, r, dry_run = -1; |
e594a3b1 LP |
5782 | |
5783 | assert(argc >= 0); | |
5784 | assert(argv); | |
5785 | ||
5786 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
5787 | ||
5788 | switch (c) { | |
5789 | ||
5790 | case 'h': | |
5791 | return help(); | |
5792 | ||
5793 | case ARG_VERSION: | |
5794 | return version(); | |
5795 | ||
896e678b LP |
5796 | case ARG_NO_PAGER: |
5797 | arg_pager_flags |= PAGER_DISABLE; | |
5798 | break; | |
5799 | ||
5800 | case ARG_NO_LEGEND: | |
5801 | arg_legend = false; | |
5802 | break; | |
5803 | ||
e594a3b1 | 5804 | case ARG_DRY_RUN: |
599c7c54 | 5805 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 5806 | if (r < 0) |
599c7c54 | 5807 | return r; |
e594a3b1 LP |
5808 | break; |
5809 | ||
5810 | case ARG_EMPTY: | |
5811 | if (isempty(optarg) || streq(optarg, "refuse")) | |
5812 | arg_empty = EMPTY_REFUSE; | |
5813 | else if (streq(optarg, "allow")) | |
5814 | arg_empty = EMPTY_ALLOW; | |
5815 | else if (streq(optarg, "require")) | |
5816 | arg_empty = EMPTY_REQUIRE; | |
5817 | else if (streq(optarg, "force")) | |
5818 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
5819 | else if (streq(optarg, "create")) { |
5820 | arg_empty = EMPTY_CREATE; | |
5821 | ||
5822 | if (dry_run < 0) | |
5823 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
5824 | * anew. After all we cannot really break anyone's | |
5825 | * partition tables that way. */ | |
5826 | } else | |
e594a3b1 LP |
5827 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5828 | "Failed to parse --empty= parameter: %s", optarg); | |
5829 | break; | |
5830 | ||
5831 | case ARG_DISCARD: | |
599c7c54 | 5832 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 5833 | if (r < 0) |
599c7c54 | 5834 | return r; |
e594a3b1 LP |
5835 | break; |
5836 | ||
5837 | case ARG_FACTORY_RESET: | |
c3470872 | 5838 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 5839 | if (r < 0) |
c3470872 | 5840 | return r; |
e594a3b1 LP |
5841 | arg_factory_reset = r; |
5842 | break; | |
5843 | ||
5844 | case ARG_CAN_FACTORY_RESET: | |
5845 | arg_can_factory_reset = true; | |
5846 | break; | |
5847 | ||
5848 | case ARG_ROOT: | |
252d6267 LP |
5849 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
5850 | if (r < 0) | |
5851 | return r; | |
5852 | break; | |
5853 | ||
5854 | case ARG_IMAGE: | |
5855 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
5856 | if (r < 0) |
5857 | return r; | |
5858 | break; | |
5859 | ||
06e78680 YW |
5860 | case ARG_IMAGE_POLICY: |
5861 | r = parse_image_policy_argument(optarg, &arg_image_policy); | |
5862 | if (r < 0) | |
5863 | return r; | |
5864 | break; | |
5865 | ||
e594a3b1 LP |
5866 | case ARG_SEED: |
5867 | if (isempty(optarg)) { | |
5868 | arg_seed = SD_ID128_NULL; | |
5869 | arg_randomize = false; | |
5870 | } else if (streq(optarg, "random")) | |
5871 | arg_randomize = true; | |
5872 | else { | |
5873 | r = sd_id128_from_string(optarg, &arg_seed); | |
5874 | if (r < 0) | |
5875 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
5876 | ||
5877 | arg_randomize = false; | |
5878 | } | |
5879 | ||
5880 | break; | |
5881 | ||
5882 | case ARG_PRETTY: | |
c3470872 | 5883 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 5884 | if (r < 0) |
c3470872 | 5885 | return r; |
e594a3b1 LP |
5886 | arg_pretty = r; |
5887 | break; | |
5888 | ||
224c853f RP |
5889 | case ARG_DEFINITIONS: { |
5890 | _cleanup_free_ char *path = NULL; | |
5891 | r = parse_path_argument(optarg, false, &path); | |
e594a3b1 LP |
5892 | if (r < 0) |
5893 | return r; | |
224c853f RP |
5894 | if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0) |
5895 | return log_oom(); | |
e594a3b1 | 5896 | break; |
224c853f | 5897 | } |
e594a3b1 | 5898 | |
a26f4a49 LP |
5899 | case ARG_SIZE: { |
5900 | uint64_t parsed, rounded; | |
5901 | ||
170c9823 LP |
5902 | if (streq(optarg, "auto")) { |
5903 | arg_size = UINT64_MAX; | |
5904 | arg_size_auto = true; | |
5905 | break; | |
5906 | } | |
5907 | ||
a26f4a49 LP |
5908 | r = parse_size(optarg, 1024, &parsed); |
5909 | if (r < 0) | |
5910 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
5911 | ||
5912 | rounded = round_up_size(parsed, 4096); | |
5913 | if (rounded == 0) | |
5914 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
5915 | if (rounded == UINT64_MAX) | |
5916 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
5917 | ||
5918 | if (rounded != parsed) | |
e2341b6b DT |
5919 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")", |
5920 | parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded); | |
a26f4a49 LP |
5921 | |
5922 | arg_size = rounded; | |
170c9823 | 5923 | arg_size_auto = false; |
a26f4a49 LP |
5924 | break; |
5925 | } | |
b9df3536 | 5926 | |
a015fbe7 | 5927 | case ARG_JSON: |
b1e8f46c | 5928 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
5929 | if (r <= 0) |
5930 | return r; | |
a015fbe7 TH |
5931 | |
5932 | break; | |
5933 | ||
b9df3536 LP |
5934 | case ARG_KEY_FILE: { |
5935 | _cleanup_(erase_and_freep) char *k = NULL; | |
5936 | size_t n = 0; | |
5937 | ||
8b3c3a49 | 5938 | r = read_full_file_full( |
986311c2 | 5939 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
5940 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
5941 | NULL, | |
5942 | &k, &n); | |
b9df3536 LP |
5943 | if (r < 0) |
5944 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5945 | ||
5946 | erase_and_free(arg_key); | |
5947 | arg_key = TAKE_PTR(k); | |
5948 | arg_key_size = n; | |
5949 | break; | |
5950 | } | |
a26f4a49 | 5951 | |
b456191d DDM |
5952 | case ARG_PRIVATE_KEY: { |
5953 | _cleanup_(erase_and_freep) char *k = NULL; | |
5954 | size_t n = 0; | |
5955 | ||
5956 | r = read_full_file_full( | |
5957 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5958 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, | |
5959 | NULL, | |
5960 | &k, &n); | |
5961 | if (r < 0) | |
5962 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5963 | ||
5964 | EVP_PKEY_free(arg_private_key); | |
5965 | arg_private_key = NULL; | |
5966 | r = parse_private_key(k, n, &arg_private_key); | |
5967 | if (r < 0) | |
5968 | return r; | |
5969 | break; | |
5970 | } | |
5971 | ||
5972 | case ARG_CERTIFICATE: { | |
5973 | _cleanup_free_ char *cert = NULL; | |
5974 | size_t n = 0; | |
5975 | ||
5976 | r = read_full_file_full( | |
5977 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5978 | READ_FULL_FILE_CONNECT_SOCKET, | |
5979 | NULL, | |
5980 | &cert, &n); | |
5981 | if (r < 0) | |
5982 | return log_error_errno(r, "Failed to read certificate file '%s': %m", optarg); | |
5983 | ||
5984 | X509_free(arg_certificate); | |
5985 | arg_certificate = NULL; | |
5986 | r = parse_x509_certificate(cert, n, &arg_certificate); | |
5987 | if (r < 0) | |
5988 | return r; | |
5989 | break; | |
5990 | } | |
5991 | ||
889914ef LP |
5992 | case ARG_TPM2_DEVICE: { |
5993 | _cleanup_free_ char *device = NULL; | |
5994 | ||
5995 | if (streq(optarg, "list")) | |
5996 | return tpm2_list_devices(); | |
5997 | ||
5998 | if (!streq(optarg, "auto")) { | |
5999 | device = strdup(optarg); | |
6000 | if (!device) | |
6001 | return log_oom(); | |
6002 | } | |
6003 | ||
6004 | free(arg_tpm2_device); | |
6005 | arg_tpm2_device = TAKE_PTR(device); | |
6006 | break; | |
6007 | } | |
6008 | ||
222a951f LP |
6009 | case ARG_TPM2_PCRS: |
6010 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_pcr_mask); | |
889914ef LP |
6011 | if (r < 0) |
6012 | return r; | |
6013 | ||
889914ef | 6014 | break; |
889914ef | 6015 | |
02ef97cd LP |
6016 | case ARG_TPM2_PUBLIC_KEY: |
6017 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key); | |
6018 | if (r < 0) | |
6019 | return r; | |
6020 | ||
6021 | break; | |
6022 | ||
6023 | case ARG_TPM2_PUBLIC_KEY_PCRS: | |
6024 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_public_key_pcr_mask); | |
6025 | if (r < 0) | |
6026 | return r; | |
6027 | ||
6028 | break; | |
6029 | ||
4cee8333 DDM |
6030 | case ARG_SPLIT: |
6031 | r = parse_boolean_argument("--split=", optarg, NULL); | |
6032 | if (r < 0) | |
6033 | return r; | |
6034 | ||
6035 | arg_split = r; | |
6036 | break; | |
6037 | ||
81d1098b DDM |
6038 | case ARG_INCLUDE_PARTITIONS: |
6039 | if (arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE) | |
6040 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6041 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
6042 | ||
220780db | 6043 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
6044 | if (r < 0) |
6045 | return r; | |
6046 | ||
6047 | arg_filter_partitions_type = FILTER_PARTITIONS_INCLUDE; | |
6048 | ||
6049 | break; | |
6050 | ||
6051 | case ARG_EXCLUDE_PARTITIONS: | |
6052 | if (arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE) | |
6053 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6054 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
6055 | ||
220780db | 6056 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
6057 | if (r < 0) |
6058 | return r; | |
6059 | ||
6060 | arg_filter_partitions_type = FILTER_PARTITIONS_EXCLUDE; | |
6061 | ||
6062 | break; | |
6063 | ||
8275334b DDM |
6064 | case ARG_DEFER_PARTITIONS: |
6065 | r = parse_partition_types(optarg, &arg_defer_partitions, &arg_n_defer_partitions); | |
7d505753 DDM |
6066 | if (r < 0) |
6067 | return r; | |
6068 | ||
6069 | break; | |
6070 | ||
e1878ef7 DDM |
6071 | case ARG_SECTOR_SIZE: |
6072 | r = parse_sector_size(optarg, &arg_sector_size); | |
6073 | if (r < 0) | |
6074 | return r; | |
6075 | ||
6076 | break; | |
6077 | ||
e594a3b1 LP |
6078 | case '?': |
6079 | return -EINVAL; | |
6080 | ||
6081 | default: | |
04499a70 | 6082 | assert_not_reached(); |
e594a3b1 LP |
6083 | } |
6084 | ||
6085 | if (argc - optind > 1) | |
6086 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6087 | "Expected at most one argument, the path to the block device."); | |
6088 | ||
a26f4a49 | 6089 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 6090 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 6091 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
6092 | |
6093 | if (arg_can_factory_reset) | |
a26f4a49 LP |
6094 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
6095 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
6096 | * open things strictly read-only. */ | |
6097 | else if (dry_run >= 0) | |
6098 | arg_dry_run = dry_run; | |
6099 | ||
170c9823 | 6100 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
6101 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6102 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 6103 | |
252d6267 LP |
6104 | if (arg_image && arg_root) |
6105 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
6106 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
6107 | |
6108 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
6109 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
6110 | * is vendor-supplied but the root fs formatted on first boot. */ | |
6111 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
6112 | if (r <= 0) { | |
6113 | if (r < 0 && r != -ENOENT) | |
6114 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
6115 | ||
6116 | arg_root = strdup("/sysroot"); | |
6117 | } else | |
6118 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
6119 | if (!arg_root) |
6120 | return log_oom(); | |
6121 | } | |
6122 | ||
e594a3b1 | 6123 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 6124 | |
252d6267 | 6125 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
6126 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6127 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
6128 | ||
4cee8333 DDM |
6129 | if (arg_split && !arg_node) |
6130 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6131 | "A path to a loopback file must be specified when --split is used."); | |
6132 | ||
889914ef LP |
6133 | if (arg_tpm2_pcr_mask == UINT32_MAX) |
6134 | arg_tpm2_pcr_mask = TPM2_PCR_MASK_DEFAULT; | |
02ef97cd LP |
6135 | if (arg_tpm2_public_key_pcr_mask == UINT32_MAX) |
6136 | arg_tpm2_public_key_pcr_mask = UINT32_C(1) << TPM_PCR_INDEX_KERNEL_IMAGE; | |
889914ef | 6137 | |
a26d463d DDM |
6138 | if (arg_pretty < 0 && isatty(STDOUT_FILENO)) |
6139 | arg_pretty = true; | |
6140 | ||
e594a3b1 LP |
6141 | return 1; |
6142 | } | |
6143 | ||
6144 | static int parse_proc_cmdline_factory_reset(void) { | |
6145 | bool b; | |
6146 | int r; | |
6147 | ||
6148 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
6149 | return 0; | |
6150 | ||
6151 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
6152 | return 0; | |
6153 | ||
6154 | r = proc_cmdline_get_bool("systemd.factory_reset", &b); | |
6155 | if (r < 0) | |
6156 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
6157 | if (r > 0) { | |
6158 | arg_factory_reset = b; | |
6159 | ||
6160 | if (b) | |
6161 | log_notice("Honouring factory reset requested via kernel command line."); | |
6162 | } | |
6163 | ||
6164 | return 0; | |
6165 | } | |
6166 | ||
6167 | static int parse_efi_variable_factory_reset(void) { | |
6168 | _cleanup_free_ char *value = NULL; | |
6169 | int r; | |
6170 | ||
6171 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
6172 | return 0; | |
6173 | ||
6174 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
6175 | return 0; | |
6176 | ||
e6f055cb | 6177 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
e594a3b1 LP |
6178 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
6179 | return 0; | |
6180 | if (r < 0) | |
6181 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); | |
6182 | ||
6183 | r = parse_boolean(value); | |
6184 | if (r < 0) | |
6185 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
6186 | ||
6187 | arg_factory_reset = r; | |
6188 | if (r) | |
111a3aae | 6189 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
6190 | |
6191 | return 0; | |
6192 | } | |
6193 | ||
6194 | static int remove_efi_variable_factory_reset(void) { | |
6195 | int r; | |
6196 | ||
e6f055cb | 6197 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
e594a3b1 LP |
6198 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
6199 | return 0; | |
6200 | if (r < 0) | |
6201 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); | |
6202 | ||
6203 | log_info("Successfully unset EFI variable FactoryReset."); | |
6204 | return 0; | |
6205 | } | |
6206 | ||
252d6267 LP |
6207 | static int acquire_root_devno( |
6208 | const char *p, | |
6209 | const char *root, | |
6210 | int mode, | |
6211 | char **ret, | |
6212 | int *ret_fd) { | |
6213 | ||
37734dc6 | 6214 | _cleanup_free_ char *found_path = NULL, *node = NULL; |
252d6267 | 6215 | dev_t devno, fd_devno = MODE_INVALID; |
254d1313 | 6216 | _cleanup_close_ int fd = -EBADF; |
e594a3b1 | 6217 | struct stat st; |
e594a3b1 LP |
6218 | int r; |
6219 | ||
a26f4a49 LP |
6220 | assert(p); |
6221 | assert(ret); | |
6222 | assert(ret_fd); | |
6223 | ||
f461a28d | 6224 | fd = chase_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 6225 | if (fd < 0) |
252d6267 | 6226 | return fd; |
e594a3b1 LP |
6227 | |
6228 | if (fstat(fd, &st) < 0) | |
6229 | return -errno; | |
6230 | ||
6231 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 6232 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 6233 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
6234 | return 0; |
6235 | } | |
6236 | ||
252d6267 LP |
6237 | if (S_ISBLK(st.st_mode)) { |
6238 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 6239 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
6240 | if (root) |
6241 | return -EPERM; | |
6242 | ||
a26f4a49 | 6243 | fd_devno = devno = st.st_rdev; |
252d6267 | 6244 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
6245 | |
6246 | devno = st.st_dev; | |
a26f4a49 | 6247 | if (major(devno) == 0) { |
e594a3b1 LP |
6248 | r = btrfs_get_block_device_fd(fd, &devno); |
6249 | if (r == -ENOTTY) /* not btrfs */ | |
6250 | return -ENODEV; | |
6251 | if (r < 0) | |
6252 | return r; | |
6253 | } | |
e594a3b1 LP |
6254 | } else |
6255 | return -ENOTBLK; | |
6256 | ||
6257 | /* From dm-crypt to backing partition */ | |
6258 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
6259 | if (r == -ENOENT) |
6260 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
6261 | else if (r < 0) | |
e594a3b1 LP |
6262 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
6263 | ||
6264 | /* From partition to whole disk containing it */ | |
6265 | r = block_get_whole_disk(devno, &devno); | |
6266 | if (r < 0) | |
162392b7 | 6267 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 6268 | |
37734dc6 | 6269 | r = devname_from_devnum(S_IFBLK, devno, &node); |
a26f4a49 LP |
6270 | if (r < 0) |
6271 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
6272 | ||
6bbae9f8 | 6273 | /* Only if we still look at the same block device we can reuse the fd. Otherwise return an |
a26f4a49 | 6274 | * invalidated fd. */ |
37734dc6 YW |
6275 | if (fd_devno != MODE_INVALID && fd_devno == devno) { |
6276 | /* Tell udev not to interfere while we are processing the device */ | |
6277 | if (flock(fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
6278 | return log_error_errno(errno, "Failed to lock device '%s': %m", node); | |
6279 | ||
6280 | *ret_fd = TAKE_FD(fd); | |
6281 | } else | |
6282 | *ret_fd = -EBADF; | |
6283 | ||
6284 | *ret = TAKE_PTR(node); | |
a26f4a49 | 6285 | return 0; |
e594a3b1 LP |
6286 | } |
6287 | ||
cc751c75 | 6288 | static int find_root(Context *context) { |
54632d2e | 6289 | _cleanup_free_ char *device = NULL; |
5980d463 | 6290 | int r; |
e594a3b1 | 6291 | |
cc751c75 | 6292 | assert(context); |
a26f4a49 | 6293 | |
e594a3b1 | 6294 | if (arg_node) { |
a26f4a49 | 6295 | if (arg_empty == EMPTY_CREATE) { |
254d1313 | 6296 | _cleanup_close_ int fd = -EBADF; |
a26f4a49 LP |
6297 | _cleanup_free_ char *s = NULL; |
6298 | ||
6299 | s = strdup(arg_node); | |
6300 | if (!s) | |
6301 | return log_oom(); | |
6302 | ||
5332d7c6 | 6303 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
6304 | if (fd < 0) |
6305 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
6306 | ||
cc751c75 | 6307 | context->node = TAKE_PTR(s); |
db1d4e6b | 6308 | context->node_is_our_file = true; |
cc751c75 | 6309 | context->backing_fd = TAKE_FD(fd); |
a26f4a49 LP |
6310 | return 0; |
6311 | } | |
6312 | ||
252d6267 LP |
6313 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
6314 | * we'll take it relative to the host, not the image */ | |
cc751c75 | 6315 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
67f0ac8c LP |
6316 | if (r == -EUCLEAN) |
6317 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 6318 | if (r < 0) |
aa2a74ad | 6319 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
6320 | |
6321 | return 0; | |
6322 | } | |
6323 | ||
a26f4a49 LP |
6324 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
6325 | ||
54632d2e KK |
6326 | /* If the root mount has been replaced by some form of volatile file system (overlayfs), the |
6327 | * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that | |
6328 | * here. */ | |
6329 | r = readlink_malloc("/run/systemd/volatile-root", &device); | |
6330 | if (r == -ENOENT) { /* volatile-root not found */ | |
6331 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The | |
6332 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
6333 | * (think: volatile setups) */ | |
e594a3b1 | 6334 | |
54632d2e | 6335 | FOREACH_STRING(p, "/", "/usr") { |
e594a3b1 | 6336 | |
cc751c75 DDM |
6337 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, &context->node, |
6338 | &context->backing_fd); | |
54632d2e KK |
6339 | if (r < 0) { |
6340 | if (r == -EUCLEAN) | |
6341 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
6342 | if (r != -ENODEV) | |
6343 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
6344 | } else | |
6345 | return 0; | |
6346 | } | |
6347 | } else if (r < 0) | |
6348 | return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m"); | |
6349 | else { | |
cc751c75 | 6350 | r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
54632d2e KK |
6351 | if (r == -EUCLEAN) |
6352 | return btrfs_log_dev_root(LOG_ERR, r, device); | |
6353 | if (r < 0) | |
6354 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device); | |
6355 | ||
6356 | return 0; | |
e594a3b1 LP |
6357 | } |
6358 | ||
6359 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
6360 | } | |
6361 | ||
81dde3d8 | 6362 | static int resize_pt(int fd, uint64_t sector_size) { |
f9b3afae LP |
6363 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
6364 | int r; | |
6365 | ||
6366 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
6367 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
6368 | * immediately write it again, with no changes. */ | |
6369 | ||
81dde3d8 | 6370 | r = fdisk_new_context_fd(fd, /* read_only= */ false, sector_size, &c); |
f9b3afae | 6371 | if (r < 0) |
ddb6eeaf | 6372 | return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6373 | |
6374 | r = fdisk_has_label(c); | |
6375 | if (r < 0) | |
ddb6eeaf | 6376 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6377 | if (r == 0) { |
6378 | log_debug("Not resizing partition table, as there currently is none."); | |
6379 | return 0; | |
6380 | } | |
6381 | ||
6382 | r = fdisk_write_disklabel(c); | |
6383 | if (r < 0) | |
6384 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
6385 | ||
6386 | log_info("Resized partition table."); | |
6387 | return 1; | |
6388 | } | |
6389 | ||
252d6267 LP |
6390 | static int resize_backing_fd( |
6391 | const char *node, /* The primary way we access the disk image to operate on */ | |
6392 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
6393 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
81dde3d8 LP |
6394 | LoopDevice *loop_device, |
6395 | uint64_t sector_size) { | |
252d6267 | 6396 | |
254d1313 | 6397 | _cleanup_close_ int writable_fd = -EBADF; |
252d6267 | 6398 | uint64_t current_size; |
a26f4a49 LP |
6399 | struct stat st; |
6400 | int r; | |
6401 | ||
6402 | assert(node); | |
6403 | assert(fd); | |
6404 | ||
6405 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
6406 | return 0; | |
6407 | ||
6408 | if (*fd < 0) { | |
6409 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
6410 | * keep a reference to the file we can pass around. */ | |
6411 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
6412 | if (*fd < 0) | |
6413 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
6414 | } | |
6415 | ||
6416 | if (fstat(*fd, &st) < 0) | |
6417 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
6418 | ||
252d6267 LP |
6419 | if (S_ISBLK(st.st_mode)) { |
6420 | if (!backing_file) | |
6421 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
6422 | ||
6423 | assert(loop_device); | |
a26f4a49 | 6424 | |
252d6267 LP |
6425 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
6426 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
6427 | } else { | |
6428 | r = stat_verify_regular(&st); | |
6429 | if (r < 0) | |
6430 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
6431 | ||
6432 | assert(!backing_file); | |
6433 | assert(!loop_device); | |
6434 | current_size = st.st_size; | |
6435 | } | |
6436 | ||
252d6267 | 6437 | if (current_size >= arg_size) { |
2b59bf51 ZJS |
6438 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", |
6439 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 LP |
6440 | return 0; |
6441 | } | |
6442 | ||
252d6267 LP |
6443 | if (S_ISBLK(st.st_mode)) { |
6444 | assert(backing_file); | |
6445 | ||
6446 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
6447 | * backing file, hence let's do that. */ | |
6448 | ||
6449 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
6450 | if (writable_fd < 0) | |
6451 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
6452 | ||
6453 | if (fstat(writable_fd, &st) < 0) | |
6454 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
6455 | ||
6456 | r = stat_verify_regular(&st); | |
6457 | if (r < 0) | |
6458 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
6459 | ||
6460 | if ((uint64_t) st.st_size != current_size) | |
6461 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2b59bf51 ZJS |
6462 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", |
6463 | node, backing_file); | |
252d6267 LP |
6464 | } else { |
6465 | assert(S_ISREG(st.st_mode)); | |
6466 | assert(!backing_file); | |
a26f4a49 | 6467 | |
252d6267 LP |
6468 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
6469 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
6470 | * as fdisk can't accept it anyway. */ | |
6471 | ||
6472 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
6473 | if (writable_fd < 0) | |
6474 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
6475 | } | |
a26f4a49 LP |
6476 | |
6477 | if (!arg_discard) { | |
6478 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
6479 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
6480 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
2b59bf51 | 6481 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 LP |
6482 | |
6483 | /* Fallback to truncation, if fallocate() is not supported. */ | |
6484 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
6485 | } else { | |
252d6267 | 6486 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6487 | log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node); |
a26f4a49 | 6488 | else |
2b59bf51 ZJS |
6489 | log_info("File '%s' grown from %s to %s by allocation.", |
6490 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 | 6491 | |
252d6267 | 6492 | goto done; |
a26f4a49 LP |
6493 | } |
6494 | } | |
6495 | ||
6496 | if (ftruncate(writable_fd, arg_size) < 0) | |
6497 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
2b59bf51 | 6498 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 | 6499 | |
252d6267 | 6500 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6501 | log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size)); |
252d6267 | 6502 | else |
2b59bf51 ZJS |
6503 | log_info("File '%s' grown from %s to %s by truncation.", |
6504 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
252d6267 LP |
6505 | |
6506 | done: | |
81dde3d8 | 6507 | r = resize_pt(writable_fd, sector_size); |
f9b3afae LP |
6508 | if (r < 0) |
6509 | return r; | |
6510 | ||
252d6267 LP |
6511 | if (loop_device) { |
6512 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
6513 | if (r < 0) | |
6514 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
6515 | } | |
a26f4a49 LP |
6516 | |
6517 | return 1; | |
6518 | } | |
6519 | ||
170c9823 | 6520 | static int determine_auto_size(Context *c) { |
994b3031 | 6521 | uint64_t sum; |
170c9823 | 6522 | |
ac33e147 | 6523 | assert(c); |
170c9823 | 6524 | |
994b3031 LP |
6525 | sum = round_up_size(GPT_METADATA_SIZE, 4096); |
6526 | ||
170c9823 LP |
6527 | LIST_FOREACH(partitions, p, c->partitions) { |
6528 | uint64_t m; | |
6529 | ||
6530 | if (p->dropped) | |
6531 | continue; | |
6532 | ||
994b3031 | 6533 | m = partition_min_size_with_padding(c, p); |
170c9823 LP |
6534 | if (m > UINT64_MAX - sum) |
6535 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
6536 | ||
6537 | sum += m; | |
6538 | } | |
6539 | ||
2b59bf51 ZJS |
6540 | if (c->total != UINT64_MAX) |
6541 | /* Image already allocated? Then show its size. */ | |
6542 | log_info("Automatically determined minimal disk image size as %s, current image size is %s.", | |
6543 | FORMAT_BYTES(sum), FORMAT_BYTES(c->total)); | |
6544 | else | |
6545 | /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */ | |
6546 | log_info("Automatically determined minimal disk image size as %s.", | |
6547 | FORMAT_BYTES(sum)); | |
170c9823 LP |
6548 | |
6549 | arg_size = sum; | |
6550 | return 0; | |
6551 | } | |
6552 | ||
e594a3b1 | 6553 | static int run(int argc, char *argv[]) { |
252d6267 | 6554 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
252d6267 | 6555 | _cleanup_(umount_and_rmdir_and_freep) char *mounted_dir = NULL; |
e594a3b1 | 6556 | _cleanup_(context_freep) Context* context = NULL; |
cc751c75 | 6557 | bool node_is_our_loop = false; |
e594a3b1 LP |
6558 | int r; |
6559 | ||
6560 | log_show_color(true); | |
6561 | log_parse_environment(); | |
6562 | log_open(); | |
6563 | ||
e594a3b1 LP |
6564 | r = parse_argv(argc, argv); |
6565 | if (r <= 0) | |
6566 | return r; | |
6567 | ||
6568 | r = parse_proc_cmdline_factory_reset(); | |
6569 | if (r < 0) | |
6570 | return r; | |
6571 | ||
6572 | r = parse_efi_variable_factory_reset(); | |
6573 | if (r < 0) | |
6574 | return r; | |
6575 | ||
30f19400 LP |
6576 | #if HAVE_LIBCRYPTSETUP |
6577 | cryptsetup_enable_logging(NULL); | |
6578 | #endif | |
6579 | ||
252d6267 LP |
6580 | if (arg_image) { |
6581 | assert(!arg_root); | |
6582 | ||
6583 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
6584 | * systems */ | |
6585 | r = mount_image_privately_interactively( | |
6586 | arg_image, | |
84be0c71 | 6587 | arg_image_policy, |
252d6267 LP |
6588 | DISSECT_IMAGE_MOUNT_READ_ONLY | |
6589 | (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) */ | |
6590 | DISSECT_IMAGE_GPT_ONLY | | |
6591 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
6592 | DISSECT_IMAGE_USR_NO_ROOT | | |
6593 | DISSECT_IMAGE_REQUIRE_ROOT, | |
6594 | &mounted_dir, | |
a133d2c3 | 6595 | /* ret_dir_fd= */ NULL, |
e330f97a | 6596 | &loop_device); |
252d6267 LP |
6597 | if (r < 0) |
6598 | return r; | |
6599 | ||
6600 | arg_root = strdup(mounted_dir); | |
6601 | if (!arg_root) | |
6602 | return log_oom(); | |
6603 | ||
6604 | if (!arg_node) { | |
6605 | arg_node = strdup(loop_device->node); | |
6606 | if (!arg_node) | |
6607 | return log_oom(); | |
6608 | ||
3d62af7d | 6609 | /* Remember that the device we are about to manipulate is actually the one we |
252d6267 LP |
6610 | * allocated here, and thus to increase its backing file we know what to do */ |
6611 | node_is_our_loop = true; | |
6612 | } | |
6613 | } | |
6614 | ||
e594a3b1 LP |
6615 | context = context_new(arg_seed); |
6616 | if (!context) | |
6617 | return log_oom(); | |
6618 | ||
224c853f RP |
6619 | strv_uniq(arg_definitions); |
6620 | ||
e594a3b1 LP |
6621 | r = context_read_definitions(context, arg_definitions, arg_root); |
6622 | if (r < 0) | |
6623 | return r; | |
6624 | ||
cc751c75 | 6625 | r = find_root(context); |
0ae5ffe0 YW |
6626 | if (r < 0) |
6627 | return r; | |
6628 | ||
a26f4a49 | 6629 | if (arg_size != UINT64_MAX) { |
252d6267 | 6630 | r = resize_backing_fd( |
cc751c75 DDM |
6631 | context->node, |
6632 | &context->backing_fd, | |
252d6267 | 6633 | node_is_our_loop ? arg_image : NULL, |
81dde3d8 LP |
6634 | node_is_our_loop ? loop_device : NULL, |
6635 | context->sector_size); | |
a26f4a49 LP |
6636 | if (r < 0) |
6637 | return r; | |
6638 | } | |
6639 | ||
cc751c75 | 6640 | r = context_load_partition_table(context); |
e594a3b1 LP |
6641 | if (r == -EHWPOISON) |
6642 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
6643 | * really an error when called at boot. */ | |
6644 | if (r < 0) | |
6645 | return r; | |
cc751c75 | 6646 | context->from_scratch = r > 0; /* Starting from scratch */ |
e594a3b1 LP |
6647 | |
6648 | if (arg_can_factory_reset) { | |
6649 | r = context_can_factory_reset(context); | |
6650 | if (r < 0) | |
6651 | return r; | |
6652 | if (r == 0) | |
6653 | return EXIT_FAILURE; | |
6654 | ||
6655 | return 0; | |
6656 | } | |
6657 | ||
cc751c75 | 6658 | r = context_factory_reset(context); |
e594a3b1 LP |
6659 | if (r < 0) |
6660 | return r; | |
6661 | if (r > 0) { | |
6662 | /* We actually did a factory reset! */ | |
6663 | r = remove_efi_variable_factory_reset(); | |
6664 | if (r < 0) | |
6665 | return r; | |
6666 | ||
6667 | /* Reload the reduced partition table */ | |
6668 | context_unload_partition_table(context); | |
cc751c75 | 6669 | r = context_load_partition_table(context); |
e594a3b1 LP |
6670 | if (r < 0) |
6671 | return r; | |
6672 | } | |
6673 | ||
e594a3b1 LP |
6674 | r = context_read_seed(context, arg_root); |
6675 | if (r < 0) | |
6676 | return r; | |
6677 | ||
8bbbdfd7 DDM |
6678 | /* Make sure each partition has a unique UUID and unique label */ |
6679 | r = context_acquire_partition_uuids_and_labels(context); | |
6680 | if (r < 0) | |
6681 | return r; | |
6682 | ||
c4a87b76 DDM |
6683 | r = context_minimize(context); |
6684 | if (r < 0) | |
6685 | return r; | |
6686 | ||
757bc2e4 | 6687 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
6688 | r = context_open_copy_block_paths( |
6689 | context, | |
7802194a | 6690 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
6691 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
6692 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
6693 | if (r < 0) |
6694 | return r; | |
6695 | ||
170c9823 LP |
6696 | if (arg_size_auto) { |
6697 | r = determine_auto_size(context); | |
6698 | if (r < 0) | |
6699 | return r; | |
6700 | ||
6701 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
6702 | context_unload_partition_table(context); | |
6703 | ||
ac33e147 | 6704 | assert(arg_size != UINT64_MAX); |
252d6267 | 6705 | r = resize_backing_fd( |
cc751c75 DDM |
6706 | context->node, |
6707 | &context->backing_fd, | |
252d6267 | 6708 | node_is_our_loop ? arg_image : NULL, |
81dde3d8 LP |
6709 | node_is_our_loop ? loop_device : NULL, |
6710 | context->sector_size); | |
170c9823 LP |
6711 | if (r < 0) |
6712 | return r; | |
6713 | ||
cc751c75 | 6714 | r = context_load_partition_table(context); |
170c9823 LP |
6715 | if (r < 0) |
6716 | return r; | |
6717 | } | |
6718 | ||
e594a3b1 LP |
6719 | /* First try to fit new partitions in, dropping by priority until it fits */ |
6720 | for (;;) { | |
14a4c4ed LP |
6721 | uint64_t largest_free_area; |
6722 | ||
6723 | if (context_allocate_partitions(context, &largest_free_area)) | |
e594a3b1 LP |
6724 | break; /* Success! */ |
6725 | ||
9ccceb9d | 6726 | if (!context_drop_or_foreignize_one_priority(context)) { |
d17db7b2 | 6727 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), |
14a4c4ed | 6728 | "Can't fit requested partitions into available free space (%s), refusing.", |
2b59bf51 | 6729 | FORMAT_BYTES(largest_free_area)); |
d17db7b2 LP |
6730 | determine_auto_size(context); |
6731 | return r; | |
6732 | } | |
e594a3b1 LP |
6733 | } |
6734 | ||
6735 | /* Now assign free space according to the weight logic */ | |
6736 | r = context_grow_partitions(context); | |
6737 | if (r < 0) | |
6738 | return r; | |
6739 | ||
0b7f574f | 6740 | /* Now calculate where each new partition gets placed */ |
e594a3b1 LP |
6741 | context_place_partitions(context); |
6742 | ||
cc751c75 | 6743 | (void) context_dump(context, /*late=*/ false); |
a26d463d | 6744 | |
cc751c75 | 6745 | r = context_write_partition_table(context); |
e594a3b1 LP |
6746 | if (r < 0) |
6747 | return r; | |
6748 | ||
4cee8333 DDM |
6749 | r = context_split(context); |
6750 | if (r < 0) | |
6751 | return r; | |
6752 | ||
cc751c75 | 6753 | (void) context_dump(context, /*late=*/ true); |
b5b7879a | 6754 | |
db1d4e6b DDM |
6755 | context->node = mfree(context->node); |
6756 | ||
a2d7c42e DDM |
6757 | LIST_FOREACH(partitions, p, context->partitions) |
6758 | p->split_path = mfree(p->split_path); | |
b5b7879a | 6759 | |
e594a3b1 LP |
6760 | return 0; |
6761 | } | |
6762 | ||
6763 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |