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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" |
e594a3b1 | 71 | #include "terminal-util.h" |
e0e1f4f7 LP |
72 | #include "tmpfile-util.h" |
73 | #include "tpm2-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 | ||
93f125a6 DDM |
99 | /* Use 4K as the default filesystem sector size because as long as the partitions are aligned to 4K, the |
100 | * filesystems will then also be compatible with sector sizes 512, 1024 and 2048. */ | |
101 | #define DEFAULT_FILESYSTEM_SECTOR_SIZE 4096ULL | |
102 | ||
e57b7020 DDM |
103 | #define APIVFS_TMP_DIRS_NULSTR "proc\0sys\0dev\0tmp\0run\0var/tmp\0" |
104 | ||
e594a3b1 LP |
105 | /* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks |
106 | * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B | |
107 | * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll | |
108 | * waste 3K per partition, which is probably fine. */ | |
109 | ||
110 | static enum { | |
243dd1e9 | 111 | EMPTY_UNSET, /* no choice has been made yet */ |
e594a3b1 LP |
112 | EMPTY_REFUSE, /* refuse empty disks, never create a partition table */ |
113 | EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */ | |
114 | EMPTY_REQUIRE, /* require an empty disk, create a partition table */ | |
115 | EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */ | |
a26f4a49 | 116 | EMPTY_CREATE, /* create disk as loopback file, create a partition table always */ |
243dd1e9 | 117 | } arg_empty = EMPTY_UNSET; |
e594a3b1 | 118 | |
53538e33 | 119 | typedef enum FilterPartitionType { |
81d1098b DDM |
120 | FILTER_PARTITIONS_NONE, |
121 | FILTER_PARTITIONS_EXCLUDE, | |
122 | FILTER_PARTITIONS_INCLUDE, | |
123 | _FILTER_PARTITIONS_MAX, | |
124 | _FILTER_PARTITIONS_INVALID = -EINVAL, | |
125 | } FilterPartitionsType; | |
126 | ||
e594a3b1 LP |
127 | static bool arg_dry_run = true; |
128 | static const char *arg_node = NULL; | |
129 | static char *arg_root = NULL; | |
252d6267 | 130 | static char *arg_image = NULL; |
224c853f | 131 | static char **arg_definitions = NULL; |
e594a3b1 LP |
132 | static bool arg_discard = true; |
133 | static bool arg_can_factory_reset = false; | |
134 | static int arg_factory_reset = -1; | |
135 | static sd_id128_t arg_seed = SD_ID128_NULL; | |
136 | static bool arg_randomize = false; | |
137 | static int arg_pretty = -1; | |
a26f4a49 | 138 | static uint64_t arg_size = UINT64_MAX; |
170c9823 | 139 | static bool arg_size_auto = false; |
6a01ea4a | 140 | static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; |
896e678b LP |
141 | static PagerFlags arg_pager_flags = 0; |
142 | static bool arg_legend = true; | |
b9df3536 LP |
143 | static void *arg_key = NULL; |
144 | static size_t arg_key_size = 0; | |
b456191d DDM |
145 | static EVP_PKEY *arg_private_key = NULL; |
146 | static X509 *arg_certificate = NULL; | |
889914ef | 147 | static char *arg_tpm2_device = NULL; |
9e437994 DS |
148 | static Tpm2PCRValue *arg_tpm2_hash_pcr_values = NULL; |
149 | static size_t arg_tpm2_n_hash_pcr_values = 0; | |
150 | static bool arg_tpm2_hash_pcr_values_use_default = true; | |
02ef97cd | 151 | static char *arg_tpm2_public_key = NULL; |
9e437994 DS |
152 | static uint32_t arg_tpm2_public_key_pcr_mask = 0; |
153 | static bool arg_tpm2_public_key_pcr_mask_use_default = true; | |
4cee8333 | 154 | static bool arg_split = false; |
9786dfe6 | 155 | static GptPartitionType *arg_filter_partitions = NULL; |
d989dd76 | 156 | static size_t arg_n_filter_partitions = 0; |
81d1098b | 157 | static FilterPartitionsType arg_filter_partitions_type = FILTER_PARTITIONS_NONE; |
9786dfe6 | 158 | static GptPartitionType *arg_defer_partitions = NULL; |
8275334b | 159 | static size_t arg_n_defer_partitions = 0; |
e1878ef7 | 160 | static uint64_t arg_sector_size = 0; |
84be0c71 | 161 | static ImagePolicy *arg_image_policy = NULL; |
9786dfe6 | 162 | static Architecture arg_architecture = _ARCHITECTURE_INVALID; |
fc10b158 | 163 | static int arg_offline = -1; |
e1536d1f | 164 | static char **arg_copy_from = NULL; |
e594a3b1 LP |
165 | |
166 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 167 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
224c853f | 168 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep); |
b9df3536 | 169 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
b456191d DDM |
170 | STATIC_DESTRUCTOR_REGISTER(arg_private_key, EVP_PKEY_freep); |
171 | STATIC_DESTRUCTOR_REGISTER(arg_certificate, X509_freep); | |
889914ef | 172 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
9e437994 | 173 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_hash_pcr_values, freep); |
02ef97cd | 174 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep); |
81d1098b | 175 | STATIC_DESTRUCTOR_REGISTER(arg_filter_partitions, freep); |
84be0c71 | 176 | STATIC_DESTRUCTOR_REGISTER(arg_image_policy, image_policy_freep); |
e1536d1f | 177 | STATIC_DESTRUCTOR_REGISTER(arg_copy_from, strv_freep); |
e594a3b1 | 178 | |
e594a3b1 | 179 | typedef struct FreeArea FreeArea; |
e594a3b1 | 180 | |
889914ef LP |
181 | typedef enum EncryptMode { |
182 | ENCRYPT_OFF, | |
183 | ENCRYPT_KEY_FILE, | |
184 | ENCRYPT_TPM2, | |
185 | ENCRYPT_KEY_FILE_TPM2, | |
186 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 187 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
188 | } EncryptMode; |
189 | ||
b5b7879a DDM |
190 | typedef enum VerityMode { |
191 | VERITY_OFF, | |
192 | VERITY_DATA, | |
193 | VERITY_HASH, | |
b456191d | 194 | VERITY_SIG, |
b5b7879a DDM |
195 | _VERITY_MODE_MAX, |
196 | _VERITY_MODE_INVALID = -EINVAL, | |
197 | } VerityMode; | |
198 | ||
5c33b686 DDM |
199 | typedef enum MinimizeMode { |
200 | MINIMIZE_OFF, | |
201 | MINIMIZE_BEST, | |
202 | MINIMIZE_GUESS, | |
203 | _MINIMIZE_MODE_MAX, | |
204 | _MINIMIZE_MODE_INVALID = -EINVAL, | |
205 | } MinimizeMode; | |
206 | ||
448cfb7f | 207 | typedef struct Partition { |
e594a3b1 | 208 | char *definition_path; |
39fc0174 | 209 | char **drop_in_files; |
e594a3b1 | 210 | |
22e932f4 | 211 | GptPartitionType type; |
e594a3b1 | 212 | sd_id128_t current_uuid, new_uuid; |
11749b61 | 213 | bool new_uuid_is_set; |
e594a3b1 | 214 | char *current_label, *new_label; |
81e04781 VH |
215 | sd_id128_t fs_uuid, luks_uuid, verity_uuid; |
216 | uint8_t verity_salt[SHA256_DIGEST_SIZE]; | |
e594a3b1 LP |
217 | |
218 | bool dropped; | |
219 | bool factory_reset; | |
220 | int32_t priority; | |
221 | ||
222 | uint32_t weight, padding_weight; | |
223 | ||
224 | uint64_t current_size, new_size; | |
225 | uint64_t size_min, size_max; | |
226 | ||
227 | uint64_t current_padding, new_padding; | |
228 | uint64_t padding_min, padding_max; | |
229 | ||
230 | uint64_t partno; | |
231 | uint64_t offset; | |
232 | ||
233 | struct fdisk_partition *current_partition; | |
234 | struct fdisk_partition *new_partition; | |
235 | FreeArea *padding_area; | |
236 | FreeArea *allocated_to_area; | |
237 | ||
757bc2e4 | 238 | char *copy_blocks_path; |
7d07030e | 239 | bool copy_blocks_path_is_our_file; |
5c08da58 | 240 | bool copy_blocks_auto; |
585c5c75 | 241 | const char *copy_blocks_root; |
757bc2e4 | 242 | int copy_blocks_fd; |
1e46985a | 243 | uint64_t copy_blocks_offset; |
757bc2e4 LP |
244 | uint64_t copy_blocks_size; |
245 | ||
53171c04 | 246 | char *format; |
8a794850 | 247 | char **copy_files; |
600bf76c DDM |
248 | char **exclude_files_source; |
249 | char **exclude_files_target; | |
d83d8048 | 250 | char **make_directories; |
440f805c | 251 | char **subvolumes; |
889914ef | 252 | EncryptMode encrypt; |
b5b7879a DDM |
253 | VerityMode verity; |
254 | char *verity_match_key; | |
5c33b686 | 255 | MinimizeMode minimize; |
c380047b MC |
256 | uint64_t verity_data_block_size; |
257 | uint64_t verity_hash_block_size; | |
53171c04 | 258 | |
e73309c5 | 259 | uint64_t gpt_flags; |
ff0771bf | 260 | int no_auto; |
e73309c5 | 261 | int read_only; |
1c41c1dc | 262 | int growfs; |
e73309c5 | 263 | |
b5b7879a DDM |
264 | uint8_t *roothash; |
265 | size_t roothash_size; | |
266 | ||
4cee8333 | 267 | char *split_name_format; |
62108348 | 268 | char *split_path; |
4cee8333 | 269 | |
448cfb7f | 270 | struct Partition *siblings[_VERITY_MODE_MAX]; |
b5b7879a | 271 | |
448cfb7f DDM |
272 | LIST_FIELDS(struct Partition, partitions); |
273 | } Partition; | |
e594a3b1 LP |
274 | |
275 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
276 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
277 | ||
278 | struct FreeArea { | |
279 | Partition *after; | |
280 | uint64_t size; | |
281 | uint64_t allocated; | |
282 | }; | |
283 | ||
448cfb7f | 284 | typedef struct Context { |
e594a3b1 LP |
285 | LIST_HEAD(Partition, partitions); |
286 | size_t n_partitions; | |
287 | ||
288 | FreeArea **free_areas; | |
319a4f4b | 289 | size_t n_free_areas; |
e594a3b1 LP |
290 | |
291 | uint64_t start, end, total; | |
292 | ||
293 | struct fdisk_context *fdisk_context; | |
93f125a6 | 294 | uint64_t sector_size, grain_size, fs_sector_size; |
e594a3b1 LP |
295 | |
296 | sd_id128_t seed; | |
cc751c75 DDM |
297 | |
298 | char *node; | |
db1d4e6b | 299 | bool node_is_our_file; |
cc751c75 DDM |
300 | int backing_fd; |
301 | ||
302 | bool from_scratch; | |
448cfb7f | 303 | } Context; |
e594a3b1 | 304 | |
889914ef LP |
305 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
306 | [ENCRYPT_OFF] = "off", | |
307 | [ENCRYPT_KEY_FILE] = "key-file", | |
308 | [ENCRYPT_TPM2] = "tpm2", | |
309 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
310 | }; | |
311 | ||
b5b7879a DDM |
312 | static const char *verity_mode_table[_VERITY_MODE_MAX] = { |
313 | [VERITY_OFF] = "off", | |
314 | [VERITY_DATA] = "data", | |
315 | [VERITY_HASH] = "hash", | |
b456191d | 316 | [VERITY_SIG] = "signature", |
b5b7879a DDM |
317 | }; |
318 | ||
5c33b686 DDM |
319 | static const char *minimize_mode_table[_MINIMIZE_MODE_MAX] = { |
320 | [MINIMIZE_OFF] = "off", | |
321 | [MINIMIZE_BEST] = "best", | |
322 | [MINIMIZE_GUESS] = "guess", | |
323 | }; | |
324 | ||
2709d029 | 325 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); |
86bebe38 | 326 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode); |
5c33b686 | 327 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(minimize_mode, MinimizeMode, MINIMIZE_BEST); |
889914ef | 328 | |
e594a3b1 LP |
329 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
330 | return (v / p) * p; | |
331 | } | |
332 | ||
333 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
334 | ||
335 | v = DIV_ROUND_UP(v, p); | |
336 | ||
337 | if (v > UINT64_MAX / p) | |
338 | return UINT64_MAX; /* overflow */ | |
339 | ||
340 | return v * p; | |
341 | } | |
342 | ||
343 | static Partition *partition_new(void) { | |
344 | Partition *p; | |
345 | ||
346 | p = new(Partition, 1); | |
347 | if (!p) | |
348 | return NULL; | |
349 | ||
350 | *p = (Partition) { | |
351 | .weight = 1000, | |
352 | .padding_weight = 0, | |
353 | .current_size = UINT64_MAX, | |
354 | .new_size = UINT64_MAX, | |
355 | .size_min = UINT64_MAX, | |
356 | .size_max = UINT64_MAX, | |
357 | .current_padding = UINT64_MAX, | |
358 | .new_padding = UINT64_MAX, | |
359 | .padding_min = UINT64_MAX, | |
360 | .padding_max = UINT64_MAX, | |
361 | .partno = UINT64_MAX, | |
362 | .offset = UINT64_MAX, | |
254d1313 | 363 | .copy_blocks_fd = -EBADF, |
1e46985a | 364 | .copy_blocks_offset = UINT64_MAX, |
757bc2e4 | 365 | .copy_blocks_size = UINT64_MAX, |
ff0771bf | 366 | .no_auto = -1, |
e73309c5 | 367 | .read_only = -1, |
1c41c1dc | 368 | .growfs = -1, |
c380047b MC |
369 | .verity_data_block_size = UINT64_MAX, |
370 | .verity_hash_block_size = UINT64_MAX, | |
e594a3b1 LP |
371 | }; |
372 | ||
373 | return p; | |
374 | } | |
375 | ||
376 | static Partition* partition_free(Partition *p) { | |
377 | if (!p) | |
378 | return NULL; | |
379 | ||
380 | free(p->current_label); | |
381 | free(p->new_label); | |
382 | free(p->definition_path); | |
39fc0174 | 383 | strv_free(p->drop_in_files); |
e594a3b1 LP |
384 | |
385 | if (p->current_partition) | |
386 | fdisk_unref_partition(p->current_partition); | |
387 | if (p->new_partition) | |
388 | fdisk_unref_partition(p->new_partition); | |
389 | ||
7d07030e DDM |
390 | if (p->copy_blocks_path_is_our_file) |
391 | unlink_and_free(p->copy_blocks_path); | |
392 | else | |
393 | free(p->copy_blocks_path); | |
757bc2e4 LP |
394 | safe_close(p->copy_blocks_fd); |
395 | ||
53171c04 | 396 | free(p->format); |
8a794850 | 397 | strv_free(p->copy_files); |
600bf76c DDM |
398 | strv_free(p->exclude_files_source); |
399 | strv_free(p->exclude_files_target); | |
d83d8048 | 400 | strv_free(p->make_directories); |
440f805c | 401 | strv_free(p->subvolumes); |
b5b7879a DDM |
402 | free(p->verity_match_key); |
403 | ||
404 | free(p->roothash); | |
53171c04 | 405 | |
4cee8333 | 406 | free(p->split_name_format); |
a2d7c42e | 407 | unlink_and_free(p->split_path); |
4cee8333 | 408 | |
e594a3b1 LP |
409 | return mfree(p); |
410 | } | |
411 | ||
9ccceb9d YW |
412 | static void partition_foreignize(Partition *p) { |
413 | assert(p); | |
414 | assert(PARTITION_EXISTS(p)); | |
415 | ||
416 | /* Reset several parameters set through definition file to make the partition foreign. */ | |
417 | ||
9ccceb9d YW |
418 | p->definition_path = mfree(p->definition_path); |
419 | p->drop_in_files = strv_free(p->drop_in_files); | |
420 | ||
421 | p->copy_blocks_path = mfree(p->copy_blocks_path); | |
422 | p->copy_blocks_fd = safe_close(p->copy_blocks_fd); | |
585c5c75 | 423 | p->copy_blocks_root = NULL; |
9ccceb9d YW |
424 | |
425 | p->format = mfree(p->format); | |
426 | p->copy_files = strv_free(p->copy_files); | |
600bf76c DDM |
427 | p->exclude_files_source = strv_free(p->exclude_files_source); |
428 | p->exclude_files_target = strv_free(p->exclude_files_target); | |
9ccceb9d | 429 | p->make_directories = strv_free(p->make_directories); |
440f805c | 430 | p->subvolumes = strv_free(p->subvolumes); |
9ccceb9d YW |
431 | p->verity_match_key = mfree(p->verity_match_key); |
432 | ||
9ccceb9d YW |
433 | p->priority = 0; |
434 | p->weight = 1000; | |
435 | p->padding_weight = 0; | |
436 | p->size_min = UINT64_MAX; | |
437 | p->size_max = UINT64_MAX; | |
438 | p->padding_min = UINT64_MAX; | |
439 | p->padding_max = UINT64_MAX; | |
440 | p->no_auto = -1; | |
441 | p->read_only = -1; | |
442 | p->growfs = -1; | |
443 | p->verity = VERITY_OFF; | |
444 | } | |
445 | ||
c74d50ff | 446 | static bool partition_type_exclude(const GptPartitionType *type) { |
81d1098b DDM |
447 | if (arg_filter_partitions_type == FILTER_PARTITIONS_NONE) |
448 | return false; | |
449 | ||
d989dd76 | 450 | for (size_t i = 0; i < arg_n_filter_partitions; i++) |
c74d50ff | 451 | if (sd_id128_equal(type->uuid, arg_filter_partitions[i].uuid)) |
81d1098b DDM |
452 | return arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE; |
453 | ||
454 | return arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE; | |
455 | } | |
456 | ||
c74d50ff | 457 | static bool partition_type_defer(const GptPartitionType *type) { |
8275334b | 458 | for (size_t i = 0; i < arg_n_defer_partitions; i++) |
c74d50ff | 459 | if (sd_id128_equal(type->uuid, arg_defer_partitions[i].uuid)) |
7d505753 DDM |
460 | return true; |
461 | ||
462 | return false; | |
463 | } | |
464 | ||
e594a3b1 LP |
465 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { |
466 | if (!p) | |
467 | return NULL; | |
468 | ||
469 | LIST_REMOVE(partitions, context->partitions, p); | |
470 | ||
471 | assert(context->n_partitions > 0); | |
472 | context->n_partitions--; | |
473 | ||
474 | return partition_free(p); | |
475 | } | |
476 | ||
477 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
478 | ||
479 | static Context *context_new(sd_id128_t seed) { | |
480 | Context *context; | |
481 | ||
482 | context = new(Context, 1); | |
483 | if (!context) | |
484 | return NULL; | |
485 | ||
486 | *context = (Context) { | |
487 | .start = UINT64_MAX, | |
488 | .end = UINT64_MAX, | |
489 | .total = UINT64_MAX, | |
490 | .seed = seed, | |
491 | }; | |
492 | ||
493 | return context; | |
494 | } | |
495 | ||
496 | static void context_free_free_areas(Context *context) { | |
497 | assert(context); | |
498 | ||
499 | for (size_t i = 0; i < context->n_free_areas; i++) | |
500 | free(context->free_areas[i]); | |
501 | ||
502 | context->free_areas = mfree(context->free_areas); | |
503 | context->n_free_areas = 0; | |
e594a3b1 LP |
504 | } |
505 | ||
506 | static Context *context_free(Context *context) { | |
507 | if (!context) | |
508 | return NULL; | |
509 | ||
510 | while (context->partitions) | |
511 | partition_unlink_and_free(context, context->partitions); | |
512 | assert(context->n_partitions == 0); | |
513 | ||
514 | context_free_free_areas(context); | |
515 | ||
516 | if (context->fdisk_context) | |
517 | fdisk_unref_context(context->fdisk_context); | |
518 | ||
cc751c75 | 519 | safe_close(context->backing_fd); |
db1d4e6b DDM |
520 | if (context->node_is_our_file) |
521 | unlink_and_free(context->node); | |
522 | else | |
523 | free(context->node); | |
cc751c75 | 524 | |
e594a3b1 LP |
525 | return mfree(context); |
526 | } | |
527 | ||
528 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
529 | ||
530 | static int context_add_free_area( | |
531 | Context *context, | |
532 | uint64_t size, | |
533 | Partition *after) { | |
534 | ||
535 | FreeArea *a; | |
536 | ||
537 | assert(context); | |
538 | assert(!after || !after->padding_area); | |
539 | ||
319a4f4b | 540 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
541 | return -ENOMEM; |
542 | ||
543 | a = new(FreeArea, 1); | |
544 | if (!a) | |
545 | return -ENOMEM; | |
546 | ||
547 | *a = (FreeArea) { | |
548 | .size = size, | |
549 | .after = after, | |
550 | }; | |
551 | ||
552 | context->free_areas[context->n_free_areas++] = a; | |
553 | ||
554 | if (after) | |
555 | after->padding_area = a; | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
9ccceb9d YW |
560 | static void partition_drop_or_foreignize(Partition *p) { |
561 | if (!p || p->dropped || PARTITION_IS_FOREIGN(p)) | |
562 | return; | |
563 | ||
564 | if (PARTITION_EXISTS(p)) { | |
565 | log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.", | |
566 | strna(p->current_label ?: p->new_label), p->priority); | |
567 | ||
568 | /* Handle the partition as foreign. Do not set dropped flag. */ | |
569 | partition_foreignize(p); | |
570 | } else { | |
571 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", | |
572 | p->definition_path, p->priority); | |
573 | ||
574 | p->dropped = true; | |
575 | p->allocated_to_area = NULL; | |
576 | } | |
577 | } | |
578 | ||
579 | static bool context_drop_or_foreignize_one_priority(Context *context) { | |
e594a3b1 | 580 | int32_t priority = 0; |
e594a3b1 LP |
581 | |
582 | LIST_FOREACH(partitions, p, context->partitions) { | |
583 | if (p->dropped) | |
584 | continue; | |
e594a3b1 | 585 | |
9ccceb9d | 586 | priority = MAX(priority, p->priority); |
e594a3b1 LP |
587 | } |
588 | ||
589 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
590 | * least one existing priority */ | |
9ccceb9d | 591 | if (priority <= 0) |
e594a3b1 LP |
592 | return false; |
593 | ||
594 | LIST_FOREACH(partitions, p, context->partitions) { | |
595 | if (p->priority < priority) | |
596 | continue; | |
597 | ||
9ccceb9d | 598 | partition_drop_or_foreignize(p); |
b5b7879a DDM |
599 | |
600 | /* We ensure that all verity sibling partitions have the same priority, so it's safe | |
601 | * to drop all siblings here as well. */ | |
602 | ||
9ccceb9d YW |
603 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) |
604 | partition_drop_or_foreignize(p->siblings[mode]); | |
e594a3b1 LP |
605 | } |
606 | ||
607 | return true; | |
608 | } | |
609 | ||
a80701e6 | 610 | static uint64_t partition_min_size(const Context *context, const Partition *p) { |
e594a3b1 LP |
611 | uint64_t sz; |
612 | ||
994b3031 LP |
613 | assert(context); |
614 | assert(p); | |
615 | ||
e594a3b1 LP |
616 | /* Calculate the disk space we really need at minimum for this partition. If the partition already |
617 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
618 | * than 4K. |
619 | * | |
620 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
621 | |
622 | if (PARTITION_IS_FOREIGN(p)) { | |
623 | /* Don't allow changing size of partitions not managed by us */ | |
624 | assert(p->current_size != UINT64_MAX); | |
625 | return p->current_size; | |
626 | } | |
627 | ||
b456191d DDM |
628 | if (p->verity == VERITY_SIG) |
629 | return VERITY_SIG_SIZE; | |
630 | ||
fb08381c | 631 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 632 | |
170c9823 LP |
633 | if (!PARTITION_EXISTS(p)) { |
634 | uint64_t d = 0; | |
635 | ||
889914ef | 636 | if (p->encrypt != ENCRYPT_OFF) |
48a09a8f | 637 | d += round_up_size(LUKS2_METADATA_KEEP_FREE, context->grain_size); |
170c9823 LP |
638 | |
639 | if (p->copy_blocks_size != UINT64_MAX) | |
994b3031 | 640 | d += round_up_size(p->copy_blocks_size, context->grain_size); |
889914ef | 641 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
642 | uint64_t f; |
643 | ||
644 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
994b3031 LP |
645 | f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX; |
646 | d += f == UINT64_MAX ? context->grain_size : f; | |
170c9823 LP |
647 | } |
648 | ||
649 | if (d > sz) | |
650 | sz = d; | |
651 | } | |
757bc2e4 | 652 | |
994b3031 | 653 | return MAX(round_up_size(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, context->grain_size), sz); |
e594a3b1 LP |
654 | } |
655 | ||
994b3031 LP |
656 | static uint64_t partition_max_size(const Context *context, const Partition *p) { |
657 | uint64_t sm; | |
658 | ||
e594a3b1 LP |
659 | /* Calculate how large the partition may become at max. This is generally the configured maximum |
660 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
661 | * since we never want to shrink partitions. */ | |
662 | ||
994b3031 LP |
663 | assert(context); |
664 | assert(p); | |
665 | ||
e594a3b1 LP |
666 | if (PARTITION_IS_FOREIGN(p)) { |
667 | /* Don't allow changing size of partitions not managed by us */ | |
668 | assert(p->current_size != UINT64_MAX); | |
669 | return p->current_size; | |
670 | } | |
671 | ||
b456191d DDM |
672 | if (p->verity == VERITY_SIG) |
673 | return VERITY_SIG_SIZE; | |
674 | ||
822d9b9a YW |
675 | if (p->size_max == UINT64_MAX) |
676 | return UINT64_MAX; | |
677 | ||
994b3031 LP |
678 | sm = round_down_size(p->size_max, context->grain_size); |
679 | ||
e594a3b1 | 680 | if (p->current_size != UINT64_MAX) |
b0fbf90b | 681 | sm = MAX(p->current_size, sm); |
e594a3b1 | 682 | |
b0fbf90b | 683 | return MAX(partition_min_size(context, p), sm); |
e594a3b1 LP |
684 | } |
685 | ||
a801bb01 YW |
686 | static uint64_t partition_min_padding(const Partition *p) { |
687 | assert(p); | |
688 | return p->padding_min != UINT64_MAX ? p->padding_min : 0; | |
689 | } | |
690 | ||
691 | static uint64_t partition_max_padding(const Partition *p) { | |
692 | assert(p); | |
693 | return p->padding_max; | |
694 | } | |
695 | ||
994b3031 | 696 | static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) { |
e594a3b1 LP |
697 | uint64_t sz; |
698 | ||
699 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
700 | * takes user configured padding into account as well as any additional whitespace needed to align | |
701 | * the next partition to 4K again. */ | |
702 | ||
994b3031 LP |
703 | assert(context); |
704 | assert(p); | |
705 | ||
a801bb01 | 706 | sz = partition_min_size(context, p) + partition_min_padding(p); |
e594a3b1 LP |
707 | |
708 | if (PARTITION_EXISTS(p)) { | |
709 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
710 | assert(p->offset != UINT64_MAX); | |
994b3031 | 711 | return round_up_size(p->offset + sz, context->grain_size) - p->offset; |
e594a3b1 LP |
712 | } |
713 | ||
714 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
994b3031 | 715 | return round_up_size(sz, context->grain_size); |
e594a3b1 LP |
716 | } |
717 | ||
718 | static uint64_t free_area_available(const FreeArea *a) { | |
719 | assert(a); | |
720 | ||
721 | /* Determines how much of this free area is not allocated yet */ | |
722 | ||
723 | assert(a->size >= a->allocated); | |
724 | return a->size - a->allocated; | |
725 | } | |
726 | ||
58b06ac1 | 727 | static uint64_t free_area_current_end(Context *context, const FreeArea *a) { |
994b3031 LP |
728 | assert(context); |
729 | assert(a); | |
730 | ||
58b06ac1 YW |
731 | if (!a->after) |
732 | return free_area_available(a); | |
e594a3b1 | 733 | |
58b06ac1 YW |
734 | assert(a->after->offset != UINT64_MAX); |
735 | assert(a->after->current_size != UINT64_MAX); | |
e594a3b1 | 736 | |
58b06ac1 YW |
737 | /* Calculate where the free area ends, based on the offset of the partition preceding it. */ |
738 | return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a); | |
739 | } | |
e594a3b1 | 740 | |
58b06ac1 YW |
741 | static uint64_t free_area_min_end(Context *context, const FreeArea *a) { |
742 | assert(context); | |
743 | assert(a); | |
e594a3b1 | 744 | |
58b06ac1 YW |
745 | if (!a->after) |
746 | return 0; | |
e594a3b1 | 747 | |
58b06ac1 YW |
748 | assert(a->after->offset != UINT64_MAX); |
749 | assert(a->after->current_size != UINT64_MAX); | |
1052a114 | 750 | |
58b06ac1 YW |
751 | /* Calculate where the partition would end when we give it as much as it needs. */ |
752 | return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size); | |
753 | } | |
754 | ||
755 | static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) { | |
756 | assert(context); | |
757 | assert(a); | |
758 | ||
759 | /* Similar to free_area_available(), but takes into account that the required size and padding of the | |
760 | * preceding partition is honoured. */ | |
e594a3b1 | 761 | |
58b06ac1 | 762 | return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a)); |
e594a3b1 LP |
763 | } |
764 | ||
994b3031 LP |
765 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) { |
766 | assert(context); | |
767 | ||
768 | return CMP(free_area_available_for_new_partitions(context, *a), | |
769 | free_area_available_for_new_partitions(context, *b)); | |
e594a3b1 LP |
770 | } |
771 | ||
994b3031 LP |
772 | static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) { |
773 | assert(context); | |
e594a3b1 | 774 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ |
184cf99a | 775 | assert(amount <= total); |
994b3031 | 776 | return LESS_BY(total, round_up_size(amount, context->grain_size)); |
e594a3b1 LP |
777 | } |
778 | ||
779 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
780 | assert(amount <= total); | |
781 | return total - amount; | |
782 | } | |
783 | ||
14a4c4ed | 784 | static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) { |
e594a3b1 LP |
785 | assert(context); |
786 | ||
f39cf264 YW |
787 | /* This may be called multiple times. Reset previous assignments. */ |
788 | for (size_t i = 0; i < context->n_free_areas; i++) | |
789 | context->free_areas[i]->allocated = 0; | |
790 | ||
14a4c4ed | 791 | /* Sort free areas by size, putting smallest first */ |
994b3031 | 792 | typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context); |
e594a3b1 | 793 | |
14a4c4ed LP |
794 | /* In any case return size of the largest free area (i.e. not the size of all free areas |
795 | * combined!) */ | |
796 | if (ret_largest_free_area) | |
797 | *ret_largest_free_area = | |
798 | context->n_free_areas == 0 ? 0 : | |
994b3031 | 799 | free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]); |
14a4c4ed | 800 | |
cdbcc339 YW |
801 | /* Check that each existing partition can fit its area. */ |
802 | for (size_t i = 0; i < context->n_free_areas; i++) | |
803 | if (free_area_current_end(context, context->free_areas[i]) < | |
804 | free_area_min_end(context, context->free_areas[i])) | |
805 | return false; | |
806 | ||
14a4c4ed | 807 | /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */ |
e594a3b1 LP |
808 | LIST_FOREACH(partitions, p, context->partitions) { |
809 | bool fits = false; | |
810 | uint64_t required; | |
811 | FreeArea *a = NULL; | |
812 | ||
813 | /* Skip partitions we already dropped or that already exist */ | |
814 | if (p->dropped || PARTITION_EXISTS(p)) | |
815 | continue; | |
816 | ||
e594a3b1 | 817 | /* How much do we need to fit? */ |
994b3031 LP |
818 | required = partition_min_size_with_padding(context, p); |
819 | assert(required % context->grain_size == 0); | |
e594a3b1 LP |
820 | |
821 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
822 | a = context->free_areas[i]; | |
823 | ||
994b3031 | 824 | if (free_area_available_for_new_partitions(context, a) >= required) { |
e594a3b1 LP |
825 | fits = true; |
826 | break; | |
827 | } | |
828 | } | |
829 | ||
830 | if (!fits) | |
831 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
832 | ||
833 | /* Assign the partition to this free area */ | |
834 | p->allocated_to_area = a; | |
835 | ||
836 | /* Budget the minimal partition size */ | |
837 | a->allocated += required; | |
838 | } | |
839 | ||
840 | return true; | |
841 | } | |
842 | ||
843 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
844 | uint64_t weight_sum = 0; | |
e594a3b1 LP |
845 | |
846 | assert(context); | |
847 | assert(a); | |
848 | assert(ret); | |
849 | ||
850 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
851 | ||
852 | LIST_FOREACH(partitions, p, context->partitions) { | |
853 | if (p->padding_area != a && p->allocated_to_area != a) | |
854 | continue; | |
855 | ||
856 | if (p->weight > UINT64_MAX - weight_sum) | |
857 | goto overflow_sum; | |
858 | weight_sum += p->weight; | |
859 | ||
860 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
861 | goto overflow_sum; | |
862 | weight_sum += p->padding_weight; | |
863 | } | |
864 | ||
865 | *ret = weight_sum; | |
866 | return 0; | |
867 | ||
868 | overflow_sum: | |
da890466 | 869 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64-bit range, refusing."); |
e594a3b1 LP |
870 | } |
871 | ||
0245e15a | 872 | static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) { |
e594a3b1 | 873 | assert(weight_sum >= weight); |
e594a3b1 | 874 | |
0245e15a YW |
875 | for (;;) { |
876 | if (weight == 0) | |
877 | return 0; | |
878 | if (weight == weight_sum) | |
879 | return value; | |
880 | if (value <= UINT64_MAX / weight) | |
881 | return value * weight / weight_sum; | |
882 | ||
883 | /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the | |
884 | * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down: | |
885 | * - the sum of scale_by_weight() for all weights must not be larger than the input value, | |
886 | * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */ | |
887 | weight_sum = DIV_ROUND_UP(weight_sum, 2); | |
888 | weight /= 2; | |
e594a3b1 | 889 | } |
e594a3b1 LP |
890 | } |
891 | ||
892 | typedef enum GrowPartitionPhase { | |
bf99aed6 YW |
893 | /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */ |
894 | PHASE_FOREIGN, | |
895 | ||
e594a3b1 LP |
896 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ |
897 | PHASE_OVERCHARGE, | |
898 | ||
899 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
900 | PHASE_UNDERCHARGE, | |
901 | ||
902 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
903 | PHASE_DISTRIBUTE, | |
ae0613c6 LP |
904 | |
905 | _GROW_PARTITION_PHASE_MAX, | |
e594a3b1 LP |
906 | } GrowPartitionPhase; |
907 | ||
0245e15a | 908 | static bool context_grow_partitions_phase( |
e594a3b1 LP |
909 | Context *context, |
910 | FreeArea *a, | |
911 | GrowPartitionPhase phase, | |
912 | uint64_t *span, | |
913 | uint64_t *weight_sum) { | |
914 | ||
2a503ad2 YW |
915 | bool try_again = false; |
916 | ||
e594a3b1 LP |
917 | assert(context); |
918 | assert(a); | |
0245e15a YW |
919 | assert(span); |
920 | assert(weight_sum); | |
e594a3b1 LP |
921 | |
922 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
923 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
924 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
925 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
926 | LIST_FOREACH(partitions, p, context->partitions) { | |
927 | ||
928 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 929 | * preceding it, or allocated into it */ |
e594a3b1 LP |
930 | if (p->allocated_to_area != a && p->padding_area != a) |
931 | continue; | |
932 | ||
933 | if (p->new_size == UINT64_MAX) { | |
e594a3b1 | 934 | uint64_t share, rsz, xsz; |
2a503ad2 | 935 | bool charge = false; |
e594a3b1 LP |
936 | |
937 | /* Calculate how much this space this partition needs if everyone would get | |
938 | * the weight based share */ | |
0245e15a | 939 | share = scale_by_weight(*span, p->weight, *weight_sum); |
e594a3b1 | 940 | |
994b3031 LP |
941 | rsz = partition_min_size(context, p); |
942 | xsz = partition_max_size(context, p); | |
e594a3b1 | 943 | |
bf99aed6 YW |
944 | if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) { |
945 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
946 | ||
947 | p->new_size = p->current_size; | |
948 | charge = true; | |
949 | ||
950 | } else if (phase == PHASE_OVERCHARGE && rsz > share) { | |
e594a3b1 LP |
951 | /* This partition needs more than its calculated share. Let's assign |
952 | * it that, and take this partition out of all calculations and start | |
953 | * again. */ | |
954 | ||
955 | p->new_size = rsz; | |
956 | charge = try_again = true; | |
957 | ||
822d9b9a | 958 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
e594a3b1 LP |
959 | /* This partition accepts less than its calculated |
960 | * share. Let's assign it that, and take this partition out | |
961 | * of all calculations and start again. */ | |
962 | ||
963 | p->new_size = xsz; | |
964 | charge = try_again = true; | |
965 | ||
966 | } else if (phase == PHASE_DISTRIBUTE) { | |
967 | /* This partition can accept its calculated share. Let's | |
968 | * assign it. There's no need to restart things here since | |
969 | * assigning this shouldn't impact the shares of the other | |
970 | * partitions. */ | |
971 | ||
d7c46b5e YW |
972 | assert(share >= rsz); |
973 | p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
974 | charge = true; |
975 | } | |
976 | ||
977 | if (charge) { | |
994b3031 | 978 | *span = charge_size(context, *span, p->new_size); |
e594a3b1 LP |
979 | *weight_sum = charge_weight(*weight_sum, p->weight); |
980 | } | |
e594a3b1 LP |
981 | } |
982 | ||
983 | if (p->new_padding == UINT64_MAX) { | |
a801bb01 | 984 | uint64_t share, rsz, xsz; |
2a503ad2 | 985 | bool charge = false; |
e594a3b1 | 986 | |
0245e15a | 987 | share = scale_by_weight(*span, p->padding_weight, *weight_sum); |
e594a3b1 | 988 | |
a801bb01 YW |
989 | rsz = partition_min_padding(p); |
990 | xsz = partition_max_padding(p); | |
991 | ||
992 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
993 | p->new_padding = rsz; | |
e594a3b1 | 994 | charge = try_again = true; |
a801bb01 YW |
995 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
996 | p->new_padding = xsz; | |
e594a3b1 LP |
997 | charge = try_again = true; |
998 | } else if (phase == PHASE_DISTRIBUTE) { | |
d7c46b5e YW |
999 | assert(share >= rsz); |
1000 | p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
1001 | charge = true; |
1002 | } | |
1003 | ||
1004 | if (charge) { | |
994b3031 | 1005 | *span = charge_size(context, *span, p->new_padding); |
e594a3b1 LP |
1006 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); |
1007 | } | |
e594a3b1 LP |
1008 | } |
1009 | } | |
1010 | ||
2a503ad2 | 1011 | return !try_again; |
e594a3b1 LP |
1012 | } |
1013 | ||
19903a43 YW |
1014 | static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) { |
1015 | uint64_t m; | |
1016 | ||
1017 | assert(context); | |
1018 | assert(a); | |
1019 | assert(p); | |
1020 | assert(span); | |
1021 | ||
1022 | if (*span == 0) | |
1023 | return; | |
1024 | ||
1025 | if (p->allocated_to_area != a) | |
1026 | return; | |
1027 | ||
1028 | if (PARTITION_IS_FOREIGN(p)) | |
1029 | return; | |
1030 | ||
1031 | assert(p->new_size != UINT64_MAX); | |
1032 | ||
1033 | /* Calculate new size and align. */ | |
1034 | m = round_down_size(p->new_size + *span, context->grain_size); | |
1035 | /* But ensure this doesn't shrink the size. */ | |
1036 | m = MAX(m, p->new_size); | |
1037 | /* And ensure this doesn't exceed the maximum size. */ | |
1038 | m = MIN(m, partition_max_size(context, p)); | |
1039 | ||
1040 | assert(m >= p->new_size); | |
1041 | ||
1042 | *span = charge_size(context, *span, m - p->new_size); | |
1043 | p->new_size = m; | |
1044 | } | |
1045 | ||
e594a3b1 LP |
1046 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { |
1047 | uint64_t weight_sum = 0, span; | |
1048 | int r; | |
1049 | ||
1050 | assert(context); | |
1051 | assert(a); | |
1052 | ||
1053 | r = context_sum_weights(context, a, &weight_sum); | |
1054 | if (r < 0) | |
1055 | return r; | |
1056 | ||
1057 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
1058 | span = a->size; | |
1059 | if (a->after) { | |
1060 | assert(a->after->offset != UINT64_MAX); | |
1061 | assert(a->after->current_size != UINT64_MAX); | |
1062 | ||
994b3031 | 1063 | span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset; |
e594a3b1 LP |
1064 | } |
1065 | ||
0245e15a YW |
1066 | for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;) |
1067 | if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum)) | |
1068 | phase++; /* go to the next phase */ | |
e594a3b1 | 1069 | |
162392b7 | 1070 | /* We still have space left over? Donate to preceding partition if we have one */ |
19903a43 YW |
1071 | if (span > 0 && a->after) |
1072 | context_grow_partition_one(context, a, a->after, &span); | |
e594a3b1 | 1073 | |
162392b7 | 1074 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 | 1075 | * size limit), then let's donate it to whoever wants it. */ |
03677889 | 1076 | if (span > 0) |
e594a3b1 | 1077 | LIST_FOREACH(partitions, p, context->partitions) { |
19903a43 | 1078 | context_grow_partition_one(context, a, p, &span); |
e594a3b1 LP |
1079 | if (span == 0) |
1080 | break; | |
1081 | } | |
e594a3b1 | 1082 | |
162392b7 | 1083 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
1084 | if (span > 0 && a->after) { |
1085 | assert(a->after->new_padding != UINT64_MAX); | |
1086 | a->after->new_padding += span; | |
1087 | } | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | static int context_grow_partitions(Context *context) { | |
e594a3b1 LP |
1093 | int r; |
1094 | ||
1095 | assert(context); | |
1096 | ||
1097 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
1098 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
1099 | if (r < 0) | |
1100 | return r; | |
1101 | } | |
1102 | ||
1103 | /* All existing partitions that have no free space after them can't change size */ | |
1104 | LIST_FOREACH(partitions, p, context->partitions) { | |
1105 | if (p->dropped) | |
1106 | continue; | |
1107 | ||
1108 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
1109 | /* The algorithm above must have initialized this already */ | |
1110 | assert(p->new_size != UINT64_MAX); | |
1111 | continue; | |
1112 | } | |
1113 | ||
1114 | assert(p->new_size == UINT64_MAX); | |
1115 | p->new_size = p->current_size; | |
1116 | ||
1117 | assert(p->new_padding == UINT64_MAX); | |
1118 | p->new_padding = p->current_padding; | |
1119 | } | |
1120 | ||
1121 | return 0; | |
1122 | } | |
1123 | ||
00428745 | 1124 | static uint64_t find_first_unused_partno(Context *context) { |
e594a3b1 | 1125 | uint64_t partno = 0; |
e594a3b1 LP |
1126 | |
1127 | assert(context); | |
1128 | ||
5f59807d DDM |
1129 | for (partno = 0;; partno++) { |
1130 | bool found = false; | |
1131 | LIST_FOREACH(partitions, p, context->partitions) | |
1132 | if (p->partno != UINT64_MAX && p->partno == partno) | |
1133 | found = true; | |
1134 | if (!found) | |
1135 | break; | |
e594a3b1 LP |
1136 | } |
1137 | ||
00428745 DDM |
1138 | return partno; |
1139 | } | |
1140 | ||
1141 | static void context_place_partitions(Context *context) { | |
1142 | ||
1143 | assert(context); | |
1144 | ||
e594a3b1 LP |
1145 | for (size_t i = 0; i < context->n_free_areas; i++) { |
1146 | FreeArea *a = context->free_areas[i]; | |
2ea7eb00 FS |
1147 | _unused_ uint64_t left; |
1148 | uint64_t start; | |
e594a3b1 LP |
1149 | |
1150 | if (a->after) { | |
1151 | assert(a->after->offset != UINT64_MAX); | |
1152 | assert(a->after->new_size != UINT64_MAX); | |
1153 | assert(a->after->new_padding != UINT64_MAX); | |
1154 | ||
1155 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
1156 | } else | |
1157 | start = context->start; | |
1158 | ||
994b3031 | 1159 | start = round_up_size(start, context->grain_size); |
e594a3b1 LP |
1160 | left = a->size; |
1161 | ||
1162 | LIST_FOREACH(partitions, p, context->partitions) { | |
1163 | if (p->allocated_to_area != a) | |
1164 | continue; | |
1165 | ||
1166 | p->offset = start; | |
00428745 | 1167 | p->partno = find_first_unused_partno(context); |
e594a3b1 LP |
1168 | |
1169 | assert(left >= p->new_size); | |
1170 | start += p->new_size; | |
1171 | left -= p->new_size; | |
1172 | ||
1173 | assert(left >= p->new_padding); | |
1174 | start += p->new_padding; | |
1175 | left -= p->new_padding; | |
1176 | } | |
1177 | } | |
1178 | } | |
1179 | ||
e594a3b1 LP |
1180 | static int config_parse_type( |
1181 | const char *unit, | |
1182 | const char *filename, | |
1183 | unsigned line, | |
1184 | const char *section, | |
1185 | unsigned section_line, | |
1186 | const char *lvalue, | |
1187 | int ltype, | |
1188 | const char *rvalue, | |
1189 | void *data, | |
1190 | void *userdata) { | |
1191 | ||
22e932f4 | 1192 | GptPartitionType *type = ASSERT_PTR(data); |
e594a3b1 LP |
1193 | int r; |
1194 | ||
1195 | assert(rvalue); | |
e594a3b1 | 1196 | |
22e932f4 | 1197 | r = gpt_partition_type_from_string(rvalue, type); |
e594a3b1 LP |
1198 | if (r < 0) |
1199 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
1200 | ||
9786dfe6 DDM |
1201 | if (arg_architecture >= 0) |
1202 | *type = gpt_partition_type_override_architecture(*type, arg_architecture); | |
1203 | ||
e594a3b1 LP |
1204 | return 0; |
1205 | } | |
1206 | ||
1207 | static int config_parse_label( | |
1208 | const char *unit, | |
1209 | const char *filename, | |
1210 | unsigned line, | |
1211 | const char *section, | |
1212 | unsigned section_line, | |
1213 | const char *lvalue, | |
1214 | int ltype, | |
1215 | const char *rvalue, | |
1216 | void *data, | |
1217 | void *userdata) { | |
1218 | ||
e031166e | 1219 | _cleanup_free_ char *resolved = NULL; |
99534007 | 1220 | char **label = ASSERT_PTR(data); |
e594a3b1 LP |
1221 | int r; |
1222 | ||
1223 | assert(rvalue); | |
e594a3b1 | 1224 | |
be9ce018 LP |
1225 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
1226 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
1227 | ||
de61a04b | 1228 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved); |
e031166e | 1229 | if (r < 0) { |
e459258f | 1230 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
1231 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
1232 | return 0; | |
1233 | } | |
1234 | ||
1235 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
1236 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1237 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
1238 | return 0; | |
1239 | } | |
1240 | ||
22a0a36e LP |
1241 | r = gpt_partition_label_valid(resolved); |
1242 | if (r < 0) { | |
1243 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1244 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
1245 | resolved, rvalue); | |
1246 | return 0; | |
1247 | } | |
1248 | if (!r) { | |
e594a3b1 | 1249 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
1250 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
1251 | resolved, rvalue); | |
e594a3b1 LP |
1252 | return 0; |
1253 | } | |
1254 | ||
e031166e | 1255 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1256 | return 0; |
1257 | } | |
1258 | ||
1259 | static int config_parse_weight( | |
1260 | const char *unit, | |
1261 | const char *filename, | |
1262 | unsigned line, | |
1263 | const char *section, | |
1264 | unsigned section_line, | |
1265 | const char *lvalue, | |
1266 | int ltype, | |
1267 | const char *rvalue, | |
1268 | void *data, | |
1269 | void *userdata) { | |
1270 | ||
f126038f | 1271 | uint32_t *w = ASSERT_PTR(data), v; |
e594a3b1 LP |
1272 | int r; |
1273 | ||
1274 | assert(rvalue); | |
e594a3b1 LP |
1275 | |
1276 | r = safe_atou32(rvalue, &v); | |
1277 | if (r < 0) { | |
1278 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1279 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | if (v > 1000U*1000U) { | |
c8f3d767 | 1284 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1285 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1286 | return 0; | |
1287 | } | |
1288 | ||
f126038f | 1289 | *w = v; |
e594a3b1 LP |
1290 | return 0; |
1291 | } | |
1292 | ||
1293 | static int config_parse_size4096( | |
1294 | const char *unit, | |
1295 | const char *filename, | |
1296 | unsigned line, | |
1297 | const char *section, | |
1298 | unsigned section_line, | |
1299 | const char *lvalue, | |
1300 | int ltype, | |
1301 | const char *rvalue, | |
1302 | void *data, | |
1303 | void *userdata) { | |
1304 | ||
1305 | uint64_t *sz = data, parsed; | |
1306 | int r; | |
1307 | ||
1308 | assert(rvalue); | |
1309 | assert(data); | |
1310 | ||
1311 | r = parse_size(rvalue, 1024, &parsed); | |
1312 | if (r < 0) | |
c8f3d767 | 1313 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1314 | "Failed to parse size value: %s", rvalue); |
1315 | ||
1316 | if (ltype > 0) | |
1317 | *sz = round_up_size(parsed, 4096); | |
1318 | else if (ltype < 0) | |
1319 | *sz = round_down_size(parsed, 4096); | |
1320 | else | |
1321 | *sz = parsed; | |
1322 | ||
1323 | if (*sz != parsed) | |
e2341b6b DT |
1324 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.", |
1325 | lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz); | |
e594a3b1 LP |
1326 | |
1327 | return 0; | |
1328 | } | |
1329 | ||
c380047b MC |
1330 | static int config_parse_block_size( |
1331 | const char *unit, | |
1332 | const char *filename, | |
1333 | unsigned line, | |
1334 | const char *section, | |
1335 | unsigned section_line, | |
1336 | const char *lvalue, | |
1337 | int ltype, | |
1338 | const char *rvalue, | |
1339 | void *data, | |
1340 | void *userdata) { | |
1341 | ||
1342 | uint64_t *blksz = ASSERT_PTR(data), parsed; | |
1343 | int r; | |
1344 | ||
1345 | assert(rvalue); | |
1346 | ||
1347 | r = parse_size(rvalue, 1024, &parsed); | |
1348 | if (r < 0) | |
1349 | return log_syntax(unit, LOG_ERR, filename, line, r, | |
1350 | "Failed to parse size value: %s", rvalue); | |
1351 | ||
1352 | if (parsed < 512 || parsed > 4096) | |
1353 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), | |
1354 | "Value not between 512 and 4096: %s", rvalue); | |
1355 | ||
1356 | if (!ISPOWEROF2(parsed)) | |
1357 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), | |
1358 | "Value not a power of 2: %s", rvalue); | |
1359 | ||
1360 | *blksz = parsed; | |
1361 | return 0; | |
1362 | } | |
1363 | ||
53171c04 LP |
1364 | static int config_parse_fstype( |
1365 | const char *unit, | |
1366 | const char *filename, | |
1367 | unsigned line, | |
1368 | const char *section, | |
1369 | unsigned section_line, | |
1370 | const char *lvalue, | |
1371 | int ltype, | |
1372 | const char *rvalue, | |
1373 | void *data, | |
1374 | void *userdata) { | |
1375 | ||
99534007 | 1376 | char **fstype = ASSERT_PTR(data); |
53171c04 LP |
1377 | |
1378 | assert(rvalue); | |
53171c04 LP |
1379 | |
1380 | if (!filename_is_valid(rvalue)) | |
1381 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1382 | "File system type is not valid, refusing: %s", rvalue); | |
1383 | ||
1384 | return free_and_strdup_warn(fstype, rvalue); | |
1385 | } | |
1386 | ||
8a794850 LP |
1387 | static int config_parse_copy_files( |
1388 | const char *unit, | |
1389 | const char *filename, | |
1390 | unsigned line, | |
1391 | const char *section, | |
1392 | unsigned section_line, | |
1393 | const char *lvalue, | |
1394 | int ltype, | |
1395 | const char *rvalue, | |
1396 | void *data, | |
1397 | void *userdata) { | |
1398 | ||
1399 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1400 | const char *p = rvalue, *target; | |
de98e6a7 | 1401 | char ***copy_files = ASSERT_PTR(data); |
8a794850 LP |
1402 | int r; |
1403 | ||
1404 | assert(rvalue); | |
8a794850 LP |
1405 | |
1406 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1407 | if (r < 0) | |
1408 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1409 | if (r == 0) { | |
1410 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1415 | if (r < 0) | |
1416 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1417 | if (r == 0) | |
1418 | target = source; /* No target, then it's the same as the source */ | |
1419 | else | |
1420 | target = buffer; | |
1421 | ||
1422 | if (!isempty(p)) | |
1423 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1424 | ||
de61a04b | 1425 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source); |
8a794850 LP |
1426 | if (r < 0) { |
1427 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1428 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1429 | return 0; | |
1430 | } | |
1431 | ||
0ade2213 LP |
1432 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1433 | if (r < 0) | |
8a794850 | 1434 | return 0; |
8a794850 | 1435 | |
de61a04b | 1436 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target); |
8a794850 LP |
1437 | if (r < 0) { |
1438 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1439 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1440 | return 0; | |
1441 | } | |
1442 | ||
0ade2213 LP |
1443 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1444 | if (r < 0) | |
8a794850 | 1445 | return 0; |
8a794850 | 1446 | |
de98e6a7 | 1447 | r = strv_consume_pair(copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); |
8a794850 LP |
1448 | if (r < 0) |
1449 | return log_oom(); | |
1450 | ||
1451 | return 0; | |
1452 | } | |
1453 | ||
a9af8276 DDM |
1454 | static int config_parse_exclude_files( |
1455 | const char *unit, | |
1456 | const char *filename, | |
1457 | unsigned line, | |
1458 | const char *section, | |
1459 | unsigned section_line, | |
1460 | const char *lvalue, | |
1461 | int ltype, | |
1462 | const char *rvalue, | |
1463 | void *data, | |
1464 | void *userdata) { | |
1465 | _cleanup_free_ char *resolved = NULL; | |
1466 | char ***exclude_files = ASSERT_PTR(data); | |
1467 | int r; | |
1468 | ||
1469 | if (isempty(rvalue)) { | |
1470 | *exclude_files = strv_free(*exclude_files); | |
1471 | return 0; | |
1472 | } | |
1473 | ||
1474 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved); | |
1475 | if (r < 0) { | |
1476 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1477 | "Failed to expand specifiers in ExcludeFiles= path, ignoring: %s", rvalue); | |
1478 | return 0; | |
1479 | } | |
1480 | ||
d10eccbd | 1481 | r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE|PATH_KEEP_TRAILING_SLASH, unit, filename, line, lvalue); |
8a794850 | 1482 | if (r < 0) |
a9af8276 DDM |
1483 | return 0; |
1484 | ||
1485 | if (strv_consume(exclude_files, TAKE_PTR(resolved)) < 0) | |
8a794850 LP |
1486 | return log_oom(); |
1487 | ||
1488 | return 0; | |
1489 | } | |
1490 | ||
5c08da58 LP |
1491 | static int config_parse_copy_blocks( |
1492 | const char *unit, | |
1493 | const char *filename, | |
1494 | unsigned line, | |
1495 | const char *section, | |
1496 | unsigned section_line, | |
1497 | const char *lvalue, | |
1498 | int ltype, | |
1499 | const char *rvalue, | |
1500 | void *data, | |
1501 | void *userdata) { | |
1502 | ||
1503 | _cleanup_free_ char *d = NULL; | |
99534007 | 1504 | Partition *partition = ASSERT_PTR(data); |
5c08da58 LP |
1505 | int r; |
1506 | ||
1507 | assert(rvalue); | |
5c08da58 LP |
1508 | |
1509 | if (isempty(rvalue)) { | |
1510 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1511 | partition->copy_blocks_auto = false; | |
1512 | return 0; | |
1513 | } | |
1514 | ||
1515 | if (streq(rvalue, "auto")) { | |
1516 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1517 | partition->copy_blocks_auto = true; | |
585c5c75 | 1518 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1519 | return 0; |
1520 | } | |
1521 | ||
de61a04b | 1522 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
5c08da58 LP |
1523 | if (r < 0) { |
1524 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1525 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1526 | return 0; | |
1527 | } | |
1528 | ||
1529 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1530 | if (r < 0) | |
1531 | return 0; | |
1532 | ||
1533 | free_and_replace(partition->copy_blocks_path, d); | |
1534 | partition->copy_blocks_auto = false; | |
585c5c75 | 1535 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1536 | return 0; |
1537 | } | |
1538 | ||
d83d8048 LP |
1539 | static int config_parse_make_dirs( |
1540 | const char *unit, | |
1541 | const char *filename, | |
1542 | unsigned line, | |
1543 | const char *section, | |
1544 | unsigned section_line, | |
1545 | const char *lvalue, | |
1546 | int ltype, | |
1547 | const char *rvalue, | |
1548 | void *data, | |
1549 | void *userdata) { | |
1550 | ||
440f805c | 1551 | char ***sv = ASSERT_PTR(data); |
99534007 | 1552 | const char *p = ASSERT_PTR(rvalue); |
d83d8048 LP |
1553 | int r; |
1554 | ||
d83d8048 LP |
1555 | for (;;) { |
1556 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1557 | ||
1558 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1559 | if (r == -ENOMEM) | |
1560 | return log_oom(); | |
1561 | if (r < 0) { | |
1562 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1563 | return 0; | |
1564 | } | |
1565 | if (r == 0) | |
1566 | return 0; | |
1567 | ||
de61a04b | 1568 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
d83d8048 LP |
1569 | if (r < 0) { |
1570 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1571 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1572 | continue; | |
1573 | } | |
1574 | ||
1575 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1576 | if (r < 0) | |
1577 | continue; | |
1578 | ||
440f805c | 1579 | r = strv_consume(sv, TAKE_PTR(d)); |
d83d8048 LP |
1580 | if (r < 0) |
1581 | return log_oom(); | |
1582 | } | |
1583 | } | |
1584 | ||
889914ef LP |
1585 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1586 | ||
e73309c5 LP |
1587 | static int config_parse_gpt_flags( |
1588 | const char *unit, | |
1589 | const char *filename, | |
1590 | unsigned line, | |
1591 | const char *section, | |
1592 | unsigned section_line, | |
1593 | const char *lvalue, | |
1594 | int ltype, | |
1595 | const char *rvalue, | |
1596 | void *data, | |
1597 | void *userdata) { | |
1598 | ||
99534007 | 1599 | uint64_t *gpt_flags = ASSERT_PTR(data); |
e73309c5 LP |
1600 | int r; |
1601 | ||
1602 | assert(rvalue); | |
e73309c5 LP |
1603 | |
1604 | r = safe_atou64(rvalue, gpt_flags); | |
1605 | if (r < 0) { | |
1606 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1607 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1608 | return 0; | |
1609 | } | |
1610 | ||
1611 | return 0; | |
1612 | } | |
1613 | ||
11749b61 DDM |
1614 | static int config_parse_uuid( |
1615 | const char *unit, | |
1616 | const char *filename, | |
1617 | unsigned line, | |
1618 | const char *section, | |
1619 | unsigned section_line, | |
1620 | const char *lvalue, | |
1621 | int ltype, | |
1622 | const char *rvalue, | |
1623 | void *data, | |
1624 | void *userdata) { | |
1625 | ||
1626 | Partition *partition = ASSERT_PTR(data); | |
1627 | int r; | |
1628 | ||
1629 | if (isempty(rvalue)) { | |
1630 | partition->new_uuid = SD_ID128_NULL; | |
1631 | partition->new_uuid_is_set = false; | |
1632 | return 0; | |
1633 | } | |
1634 | ||
1635 | if (streq(rvalue, "null")) { | |
1636 | partition->new_uuid = SD_ID128_NULL; | |
1637 | partition->new_uuid_is_set = true; | |
1638 | return 0; | |
1639 | } | |
1640 | ||
1641 | r = sd_id128_from_string(rvalue, &partition->new_uuid); | |
1642 | if (r < 0) { | |
da890466 | 1643 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128-bit ID/UUID, ignoring: %s", rvalue); |
11749b61 DDM |
1644 | return 0; |
1645 | } | |
1646 | ||
1647 | partition->new_uuid_is_set = true; | |
1648 | ||
1649 | return 0; | |
1650 | } | |
1651 | ||
b5b7879a | 1652 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF, "Invalid verity mode"); |
5c33b686 | 1653 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_minimize, minimize_mode, MinimizeMode, MINIMIZE_OFF, "Invalid minimize mode"); |
b5b7879a | 1654 | |
39fc0174 | 1655 | static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) { |
e594a3b1 LP |
1656 | |
1657 | ConfigTableItem table[] = { | |
c380047b MC |
1658 | { "Partition", "Type", config_parse_type, 0, &p->type }, |
1659 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, | |
1660 | { "Partition", "UUID", config_parse_uuid, 0, p }, | |
1661 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, | |
1662 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1663 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1664 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1665 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1666 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1667 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1668 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1669 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1670 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1671 | { "Partition", "CopyFiles", config_parse_copy_files, 0, &p->copy_files }, | |
1672 | { "Partition", "ExcludeFiles", config_parse_exclude_files, 0, &p->exclude_files_source }, | |
1673 | { "Partition", "ExcludeFilesTarget", config_parse_exclude_files, 0, &p->exclude_files_target }, | |
1674 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, &p->make_directories }, | |
1675 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
1676 | { "Partition", "Verity", config_parse_verity, 0, &p->verity }, | |
1677 | { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key }, | |
1678 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, | |
1679 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
1680 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, | |
1681 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, | |
1682 | { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format }, | |
1683 | { "Partition", "Minimize", config_parse_minimize, 0, &p->minimize }, | |
1684 | { "Partition", "Subvolumes", config_parse_make_dirs, 0, &p->subvolumes }, | |
1685 | { "Partition", "VerityDataBlockSizeBytes", config_parse_block_size, 0, &p->verity_data_block_size }, | |
1686 | { "Partition", "VerityHashBlockSizeBytes", config_parse_block_size, 0, &p->verity_hash_block_size }, | |
e594a3b1 LP |
1687 | {} |
1688 | }; | |
1689 | int r; | |
39fc0174 RP |
1690 | _cleanup_free_ char *filename = NULL; |
1691 | const char* dropin_dirname; | |
e594a3b1 | 1692 | |
39fc0174 RP |
1693 | r = path_extract_filename(path, &filename); |
1694 | if (r < 0) | |
bef69ae8 | 1695 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); |
39fc0174 RP |
1696 | |
1697 | dropin_dirname = strjoina(filename, ".d"); | |
1698 | ||
1699 | r = config_parse_many( | |
1700 | STRV_MAKE_CONST(path), | |
1701 | conf_file_dirs, | |
1702 | dropin_dirname, | |
34f2fd50 | 1703 | arg_definitions ? NULL : arg_root, |
39fc0174 RP |
1704 | "Partition\0", |
1705 | config_item_table_lookup, table, | |
1706 | CONFIG_PARSE_WARN, | |
1707 | p, | |
1708 | NULL, | |
1709 | &p->drop_in_files); | |
e594a3b1 LP |
1710 | if (r < 0) |
1711 | return r; | |
1712 | ||
c74d50ff | 1713 | if (partition_type_exclude(&p->type)) |
7d505753 DDM |
1714 | return 0; |
1715 | ||
e594a3b1 LP |
1716 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) |
1717 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1718 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1719 | ||
1720 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1721 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1722 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1723 | ||
22e932f4 | 1724 | if (sd_id128_is_null(p->type.uuid)) |
e594a3b1 LP |
1725 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1726 | "Type= not defined, refusing."); | |
1727 | ||
86320e62 DDM |
1728 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1729 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
1730 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1731 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); | |
1732 | ||
d83d8048 | 1733 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1734 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1735 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1736 | ||
973d6be4 DDM |
1737 | if (!p->format) { |
1738 | const char *format = NULL; | |
1739 | ||
1740 | if (!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories) || (p->encrypt != ENCRYPT_OFF && !(p->copy_blocks_path || p->copy_blocks_auto))) | |
1741 | /* Pick "vfat" as file system for esp and xbootldr partitions, otherwise default to "ext4". */ | |
1742 | format = IN_SET(p->type.designator, PARTITION_ESP, PARTITION_XBOOTLDR) ? "vfat" : "ext4"; | |
1743 | else if (p->type.designator == PARTITION_SWAP) | |
1744 | format = "swap"; | |
1745 | ||
1746 | if (format) { | |
1747 | p->format = strdup(format); | |
1748 | if (!p->format) | |
1749 | return log_oom(); | |
1750 | } | |
8a794850 LP |
1751 | } |
1752 | ||
5eef7047 | 1753 | if (p->minimize != MINIMIZE_OFF && !p->format && p->verity != VERITY_HASH) |
c4a87b76 | 1754 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5eef7047 | 1755 | "Minimize= can only be enabled if Format= or Verity=hash are set"); |
c4a87b76 | 1756 | |
5eef7047 | 1757 | if (p->minimize == MINIMIZE_BEST && (p->format && !fstype_is_ro(p->format)) && p->verity != VERITY_HASH) |
5c33b686 | 1758 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5eef7047 | 1759 | "Minimize=best can only be used with read-only filesystems or Verity=hash"); |
5c33b686 | 1760 | |
6d6cefad DDM |
1761 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && !mkfs_supports_root_option(p->format) && geteuid() != 0) |
1762 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EPERM), | |
1763 | "Need to be root to populate %s filesystems with CopyFiles=/MakeDirectories=", | |
1764 | p->format); | |
1765 | ||
0eb23798 DDM |
1766 | if (p->format && fstype_is_ro(p->format) && strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
1767 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1768 | "Cannot format %s filesystem without source files, refusing", p->format); | |
1769 | ||
b5b7879a DDM |
1770 | if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) { |
1771 | r = dlopen_cryptsetup(); | |
1772 | if (r < 0) | |
1773 | return log_syntax(NULL, LOG_ERR, path, 1, r, | |
1774 | "libcryptsetup not found, Verity=/Encrypt= are not supported: %m"); | |
1775 | } | |
1776 | ||
1777 | if (p->verity != VERITY_OFF && !p->verity_match_key) | |
1778 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1779 | "VerityMatchKey= must be set if Verity=%s", verity_mode_to_string(p->verity)); | |
1780 | ||
1781 | if (p->verity == VERITY_OFF && p->verity_match_key) | |
1782 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1783 | "VerityMatchKey= can only be set if Verity= is not \"%s\"", | |
1784 | verity_mode_to_string(p->verity)); | |
1785 | ||
b456191d DDM |
1786 | if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && |
1787 | (p->copy_files || p->copy_blocks_path || p->copy_blocks_auto || p->format || p->make_directories)) | |
b5b7879a DDM |
1788 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1789 | "CopyBlocks=/CopyFiles=/Format=/MakeDirectories= cannot be used with Verity=%s", | |
1790 | verity_mode_to_string(p->verity)); | |
1791 | ||
1792 | if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF) | |
1793 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1794 | "Encrypting verity hash/data partitions is not supported"); | |
1795 | ||
b456191d DDM |
1796 | if (p->verity == VERITY_SIG && !arg_private_key) |
1797 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1798 | "Verity signature partition requested but no private key provided (--private-key=)"); | |
1799 | ||
1800 | if (p->verity == VERITY_SIG && !arg_certificate) | |
1801 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
ba4a5eff | 1802 | "Verity signature partition requested but no PEM certificate provided (--certificate=)"); |
b456191d DDM |
1803 | |
1804 | if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX)) | |
1805 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1806 | "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s", | |
1807 | verity_mode_to_string(p->verity)); | |
1808 | ||
ffd9d75c | 1809 | if (!strv_isempty(p->subvolumes) && arg_offline > 0) |
440f805c | 1810 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EOPNOTSUPP), |
ffd9d75c | 1811 | "Subvolumes= cannot be used with --offline=yes"); |
440f805c | 1812 | |
e73309c5 | 1813 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
2208d492 DDM |
1814 | if ((IN_SET(p->type.designator, |
1815 | PARTITION_ROOT_VERITY, | |
ade85cd5 | 1816 | PARTITION_USR_VERITY) || p->verity == VERITY_DATA) && p->read_only < 0) |
e73309c5 LP |
1817 | p->read_only = true; |
1818 | ||
1c41c1dc | 1819 | /* Default to "growfs" on, unless read-only */ |
22e932f4 | 1820 | if (gpt_partition_type_knows_growfs(p->type) && |
1c41c1dc LP |
1821 | p->read_only <= 0) |
1822 | p->growfs = true; | |
1823 | ||
4cee8333 DDM |
1824 | if (!p->split_name_format) { |
1825 | char *s = strdup("%t"); | |
1826 | if (!s) | |
1827 | return log_oom(); | |
1828 | ||
1829 | p->split_name_format = s; | |
1830 | } else if (streq(p->split_name_format, "-")) | |
1831 | p->split_name_format = mfree(p->split_name_format); | |
1832 | ||
7d505753 | 1833 | return 1; |
e594a3b1 LP |
1834 | } |
1835 | ||
b5b7879a DDM |
1836 | static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) { |
1837 | Partition *s = NULL; | |
1838 | ||
1839 | assert(p); | |
1840 | assert(p->verity != VERITY_OFF); | |
1841 | assert(p->verity_match_key); | |
1842 | assert(mode != VERITY_OFF); | |
1843 | assert(p->verity != mode); | |
1844 | assert(ret); | |
1845 | ||
1846 | /* Try to find the matching sibling partition of the given type for a verity partition. For a data | |
af3d3873 YW |
1847 | * partition, this is the corresponding hash partition with the same verity name (and vice versa for |
1848 | * the hash partition). */ | |
b5b7879a DDM |
1849 | |
1850 | LIST_FOREACH(partitions, q, context->partitions) { | |
1851 | if (p == q) | |
1852 | continue; | |
1853 | ||
1854 | if (q->verity != mode) | |
1855 | continue; | |
1856 | ||
1857 | assert(q->verity_match_key); | |
1858 | ||
1859 | if (!streq(p->verity_match_key, q->verity_match_key)) | |
1860 | continue; | |
1861 | ||
1862 | if (s) | |
1863 | return -ENOTUNIQ; | |
1864 | ||
1865 | s = q; | |
1866 | } | |
1867 | ||
1868 | if (!s) | |
1869 | return -ENXIO; | |
1870 | ||
1871 | *ret = s; | |
1872 | ||
1873 | return 0; | |
1874 | } | |
1875 | ||
3cdcf4e2 | 1876 | static int context_open_and_lock_backing_fd(const char *node, int operation, int *backing_fd) { |
1e46985a DDM |
1877 | _cleanup_close_ int fd = -EBADF; |
1878 | ||
1879 | assert(node); | |
1880 | assert(backing_fd); | |
1881 | ||
1882 | if (*backing_fd >= 0) | |
1883 | return 0; | |
1884 | ||
1885 | fd = open(node, O_RDONLY|O_CLOEXEC); | |
1886 | if (fd < 0) | |
1887 | return log_error_errno(errno, "Failed to open device '%s': %m", node); | |
1888 | ||
1889 | /* Tell udev not to interfere while we are processing the device */ | |
3cdcf4e2 | 1890 | if (flock(fd, operation) < 0) |
1e46985a DDM |
1891 | return log_error_errno(errno, "Failed to lock device '%s': %m", node); |
1892 | ||
1893 | log_debug("Device %s opened and locked.", node); | |
1894 | *backing_fd = TAKE_FD(fd); | |
1895 | return 1; | |
1896 | } | |
1897 | ||
1898 | static int determine_current_padding( | |
1899 | struct fdisk_context *c, | |
1900 | struct fdisk_table *t, | |
1901 | struct fdisk_partition *p, | |
1902 | uint64_t secsz, | |
1903 | uint64_t grainsz, | |
1904 | uint64_t *ret) { | |
1905 | ||
1906 | size_t n_partitions; | |
1907 | uint64_t offset, next = UINT64_MAX; | |
1908 | ||
1909 | assert(c); | |
1910 | assert(t); | |
1911 | assert(p); | |
1912 | assert(ret); | |
1913 | ||
1914 | if (!fdisk_partition_has_end(p)) | |
1915 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1916 | ||
1917 | offset = fdisk_partition_get_end(p); | |
1918 | assert(offset < UINT64_MAX); | |
1919 | offset++; /* The end is one sector before the next partition or padding. */ | |
1920 | assert(offset < UINT64_MAX / secsz); | |
1921 | offset *= secsz; | |
1922 | ||
1923 | n_partitions = fdisk_table_get_nents(t); | |
1924 | for (size_t i = 0; i < n_partitions; i++) { | |
1925 | struct fdisk_partition *q; | |
1926 | uint64_t start; | |
1927 | ||
1928 | q = fdisk_table_get_partition(t, i); | |
1929 | if (!q) | |
1930 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1931 | ||
1932 | if (fdisk_partition_is_used(q) <= 0) | |
1933 | continue; | |
1934 | ||
1935 | if (!fdisk_partition_has_start(q)) | |
1936 | continue; | |
1937 | ||
1938 | start = fdisk_partition_get_start(q); | |
1939 | assert(start < UINT64_MAX / secsz); | |
1940 | start *= secsz; | |
1941 | ||
1942 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1943 | next = start; | |
1944 | } | |
1945 | ||
1946 | if (next == UINT64_MAX) { | |
1947 | /* No later partition? In that case check the end of the usable area */ | |
1948 | next = fdisk_get_last_lba(c); | |
1949 | assert(next < UINT64_MAX); | |
1950 | next++; /* The last LBA is one sector before the end */ | |
1951 | ||
1952 | assert(next < UINT64_MAX / secsz); | |
1953 | next *= secsz; | |
1954 | ||
1955 | if (offset > next) | |
1956 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1957 | } | |
1958 | ||
1959 | assert(next >= offset); | |
1960 | offset = round_up_size(offset, grainsz); | |
1961 | next = round_down_size(next, grainsz); | |
1962 | ||
1963 | *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */ | |
1964 | return 0; | |
1965 | } | |
1966 | ||
e1536d1f | 1967 | static int context_copy_from_one(Context *context, const char *src) { |
1e46985a DDM |
1968 | _cleanup_close_ int fd = -EBADF; |
1969 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; | |
1970 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
1971 | Partition *last = NULL; | |
1972 | unsigned long secsz, grainsz; | |
1973 | size_t n_partitions; | |
1974 | int r; | |
1975 | ||
e1536d1f | 1976 | assert(src); |
1e46985a | 1977 | |
e1536d1f | 1978 | r = context_open_and_lock_backing_fd(src, LOCK_SH, &fd); |
1e46985a DDM |
1979 | if (r < 0) |
1980 | return r; | |
1981 | ||
1982 | r = fd_verify_regular(fd); | |
1983 | if (r < 0) | |
e1536d1f | 1984 | return log_error_errno(r, "%s is not a file: %m", src); |
1e46985a | 1985 | |
fd9fe57a | 1986 | r = fdisk_new_context_at(fd, /* path = */ NULL, /* read_only = */ true, /* sector_size = */ UINT32_MAX, &c); |
1e46985a DDM |
1987 | if (r < 0) |
1988 | return log_error_errno(r, "Failed to create fdisk context: %m"); | |
1989 | ||
1990 | secsz = fdisk_get_sector_size(c); | |
1991 | grainsz = fdisk_get_grain_size(c); | |
1992 | ||
1993 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
1994 | if (secsz < 512 || !ISPOWEROF2(secsz)) | |
1995 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
1996 | ||
1997 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
e1536d1f | 1998 | return log_error_errno(SYNTHETIC_ERRNO(EHWPOISON), "Cannot copy from disk %s with no GPT disk label.", src); |
1e46985a DDM |
1999 | |
2000 | r = fdisk_get_partitions(c, &t); | |
2001 | if (r < 0) | |
2002 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
2003 | ||
2004 | n_partitions = fdisk_table_get_nents(t); | |
2005 | for (size_t i = 0; i < n_partitions; i++) { | |
2006 | _cleanup_(partition_freep) Partition *np = NULL; | |
2007 | _cleanup_free_ char *label_copy = NULL; | |
2008 | struct fdisk_partition *p; | |
2009 | const char *label; | |
2010 | uint64_t sz, start, padding; | |
2011 | sd_id128_t ptid, id; | |
2012 | GptPartitionType type; | |
2013 | ||
2014 | p = fdisk_table_get_partition(t, i); | |
2015 | if (!p) | |
2016 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
2017 | ||
2018 | if (fdisk_partition_is_used(p) <= 0) | |
2019 | continue; | |
2020 | ||
2021 | if (fdisk_partition_has_start(p) <= 0 || | |
2022 | fdisk_partition_has_size(p) <= 0 || | |
2023 | fdisk_partition_has_partno(p) <= 0) | |
2024 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
2025 | ||
2026 | r = fdisk_partition_get_type_as_id128(p, &ptid); | |
2027 | if (r < 0) | |
2028 | return log_error_errno(r, "Failed to query partition type UUID: %m"); | |
2029 | ||
2030 | type = gpt_partition_type_from_uuid(ptid); | |
2031 | ||
2032 | r = fdisk_partition_get_uuid_as_id128(p, &id); | |
2033 | if (r < 0) | |
2034 | return log_error_errno(r, "Failed to query partition UUID: %m"); | |
2035 | ||
2036 | label = fdisk_partition_get_name(p); | |
2037 | if (!isempty(label)) { | |
2038 | label_copy = strdup(label); | |
2039 | if (!label_copy) | |
2040 | return log_oom(); | |
2041 | } | |
2042 | ||
2043 | sz = fdisk_partition_get_size(p); | |
2044 | assert(sz <= UINT64_MAX/secsz); | |
2045 | sz *= secsz; | |
2046 | ||
2047 | start = fdisk_partition_get_start(p); | |
2048 | assert(start <= UINT64_MAX/secsz); | |
2049 | start *= secsz; | |
2050 | ||
c74d50ff | 2051 | if (partition_type_exclude(&type)) |
1e46985a DDM |
2052 | continue; |
2053 | ||
2054 | np = partition_new(); | |
2055 | if (!np) | |
2056 | return log_oom(); | |
2057 | ||
2058 | np->type = type; | |
2059 | np->new_uuid = id; | |
2060 | np->new_uuid_is_set = true; | |
2061 | np->size_min = np->size_max = sz; | |
2062 | np->new_label = TAKE_PTR(label_copy); | |
2063 | ||
e1536d1f | 2064 | np->definition_path = strdup(src); |
1e46985a DDM |
2065 | if (!np->definition_path) |
2066 | return log_oom(); | |
2067 | ||
2068 | r = determine_current_padding(c, t, p, secsz, grainsz, &padding); | |
2069 | if (r < 0) | |
2070 | return r; | |
2071 | ||
2072 | np->padding_min = np->padding_max = padding; | |
2073 | ||
e1536d1f | 2074 | np->copy_blocks_path = strdup(src); |
1e46985a DDM |
2075 | if (!np->copy_blocks_path) |
2076 | return log_oom(); | |
2077 | ||
2078 | np->copy_blocks_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3); | |
2079 | if (np->copy_blocks_fd < 0) | |
e1536d1f | 2080 | return log_error_errno(r, "Failed to duplicate file descriptor of %s: %m", src); |
1e46985a DDM |
2081 | |
2082 | np->copy_blocks_offset = start; | |
2083 | np->copy_blocks_size = sz; | |
2084 | ||
2085 | r = fdisk_partition_get_attrs_as_uint64(p, &np->gpt_flags); | |
2086 | if (r < 0) | |
2087 | return log_error_errno(r, "Failed to get partition flags: %m"); | |
2088 | ||
2089 | LIST_INSERT_AFTER(partitions, context->partitions, last, np); | |
2090 | last = TAKE_PTR(np); | |
2091 | context->n_partitions++; | |
2092 | } | |
2093 | ||
2094 | return 0; | |
2095 | } | |
2096 | ||
e1536d1f DDM |
2097 | static int context_copy_from(Context *context) { |
2098 | int r; | |
2099 | ||
2100 | assert(context); | |
2101 | ||
2102 | STRV_FOREACH(src, arg_copy_from) { | |
2103 | r = context_copy_from_one(context, *src); | |
2104 | if (r < 0) | |
2105 | return r; | |
2106 | } | |
2107 | ||
2108 | return 0; | |
2109 | } | |
2110 | ||
4b047310 | 2111 | static int context_read_definitions(Context *context) { |
e594a3b1 | 2112 | _cleanup_strv_free_ char **files = NULL; |
1e46985a | 2113 | Partition *last = LIST_FIND_TAIL(partitions, context->partitions); |
39fc0174 | 2114 | const char *const *dirs; |
9b05a371 | 2115 | int r; |
e594a3b1 LP |
2116 | |
2117 | assert(context); | |
2118 | ||
4b047310 | 2119 | dirs = (const char* const*) (arg_definitions ?: CONF_PATHS_STRV("repart.d")); |
39fc0174 | 2120 | |
4b047310 | 2121 | r = conf_files_list_strv(&files, ".conf", arg_definitions ? NULL : arg_root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs); |
e594a3b1 LP |
2122 | if (r < 0) |
2123 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
2124 | ||
2125 | STRV_FOREACH(f, files) { | |
2126 | _cleanup_(partition_freep) Partition *p = NULL; | |
2127 | ||
2128 | p = partition_new(); | |
2129 | if (!p) | |
2130 | return log_oom(); | |
2131 | ||
2132 | p->definition_path = strdup(*f); | |
2133 | if (!p->definition_path) | |
2134 | return log_oom(); | |
2135 | ||
39fc0174 | 2136 | r = partition_read_definition(p, *f, dirs); |
e594a3b1 LP |
2137 | if (r < 0) |
2138 | return r; | |
7d505753 DDM |
2139 | if (r == 0) |
2140 | continue; | |
e594a3b1 LP |
2141 | |
2142 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
2143 | last = TAKE_PTR(p); | |
2144 | context->n_partitions++; | |
2145 | } | |
2146 | ||
b5b7879a DDM |
2147 | /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */ |
2148 | ||
2149 | LIST_FOREACH(partitions, p, context->partitions) { | |
2150 | if (p->verity == VERITY_OFF) | |
2151 | continue; | |
2152 | ||
2153 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
b456191d | 2154 | Partition *q = NULL; |
b5b7879a DDM |
2155 | |
2156 | if (p->verity == mode) | |
2157 | continue; | |
2158 | ||
2159 | if (p->siblings[mode]) | |
2160 | continue; | |
2161 | ||
2162 | r = find_verity_sibling(context, p, mode, &q); | |
8e52ed02 DDM |
2163 | if (r == -ENXIO) { |
2164 | if (mode != VERITY_SIG) | |
2165 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
2166 | "Missing verity %s partition for verity %s partition with VerityMatchKey=%s", | |
2167 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
2168 | } else if (r == -ENOTUNIQ) | |
b5b7879a DDM |
2169 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), |
2170 | "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s", | |
2171 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
8e52ed02 DDM |
2172 | else if (r < 0) |
2173 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r, | |
2174 | "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s", | |
2175 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
b5b7879a | 2176 | |
b456191d DDM |
2177 | if (q) { |
2178 | if (q->priority != p->priority) | |
2179 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
2180 | "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s", | |
2181 | p->priority, q->priority, p->verity_match_key); | |
b5b7879a | 2182 | |
b456191d DDM |
2183 | p->siblings[mode] = q; |
2184 | } | |
b5b7879a DDM |
2185 | } |
2186 | } | |
2187 | ||
5eef7047 DDM |
2188 | LIST_FOREACH(partitions, p, context->partitions) { |
2189 | Partition *dp; | |
2190 | ||
2191 | if (p->verity != VERITY_HASH) | |
2192 | continue; | |
2193 | ||
2194 | if (p->minimize == MINIMIZE_OFF) | |
2195 | continue; | |
2196 | ||
2197 | assert_se(dp = p->siblings[VERITY_DATA]); | |
2198 | ||
5a77fbb8 | 2199 | if (dp->minimize == MINIMIZE_OFF && !(dp->copy_blocks_path || dp->copy_blocks_auto)) |
5eef7047 DDM |
2200 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), |
2201 | "Minimize= set for verity hash partition but data partition does " | |
2202 | "not set CopyBlocks= or Minimize="); | |
2203 | ||
2204 | } | |
2205 | ||
e594a3b1 LP |
2206 | return 0; |
2207 | } | |
2208 | ||
e594a3b1 LP |
2209 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { |
2210 | _cleanup_free_ char *ids = NULL; | |
2211 | int r; | |
2212 | ||
2213 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
2214 | return -EINVAL; | |
2215 | ||
b7416360 | 2216 | ids = new(char, SD_ID128_UUID_STRING_MAX); |
e594a3b1 LP |
2217 | if (!ids) |
2218 | return -ENOMEM; | |
2219 | ||
b7416360 | 2220 | r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids)); |
e594a3b1 LP |
2221 | if (r < 0) |
2222 | return r; | |
2223 | ||
2224 | TAKE_PTR(ids); | |
2225 | return 0; | |
2226 | } | |
2227 | ||
2228 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
2229 | int r; | |
2230 | ||
2231 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
2232 | if (r < 0) | |
2233 | return r; | |
2234 | ||
2235 | r = fdisk_set_disklabel_id(c); | |
2236 | if (r < 0) | |
2237 | return r; | |
2238 | ||
2239 | return fdisk_set_ask(c, NULL, NULL); | |
2240 | } | |
2241 | ||
53171c04 | 2242 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 | 2243 | union { |
ade99252 | 2244 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
2245 | sd_id128_t id; |
2246 | } result; | |
2247 | ||
53171c04 | 2248 | assert(token); |
e594a3b1 LP |
2249 | assert(ret); |
2250 | ||
53171c04 LP |
2251 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
2252 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
2253 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
2254 | * the machine ID we don't want to leak. */ | |
e594a3b1 | 2255 | |
ade99252 | 2256 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md); |
e594a3b1 LP |
2257 | |
2258 | /* Take the first half, mark it as v4 UUID */ | |
2259 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
2260 | *ret = id128_make_v4_uuid(result.id); | |
2261 | return 0; | |
2262 | } | |
2263 | ||
81e04781 VH |
2264 | static void derive_salt(sd_id128_t base, const char *token, uint8_t ret[static SHA256_DIGEST_SIZE]) { |
2265 | assert(token); | |
2266 | ||
2267 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), ret); | |
2268 | } | |
2269 | ||
cc751c75 | 2270 | static int context_load_partition_table(Context *context) { |
e594a3b1 LP |
2271 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
2272 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
2273 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
2274 | _cleanup_free_ char *disk_uuid_string = NULL; | |
2275 | bool from_scratch = false; | |
2276 | sd_id128_t disk_uuid; | |
2277 | size_t n_partitions; | |
994b3031 | 2278 | unsigned long secsz; |
93f125a6 | 2279 | uint64_t grainsz, fs_secsz = DEFAULT_FILESYSTEM_SECTOR_SIZE; |
e594a3b1 LP |
2280 | int r; |
2281 | ||
2282 | assert(context); | |
170c9823 LP |
2283 | assert(!context->fdisk_context); |
2284 | assert(!context->free_areas); | |
2285 | assert(context->start == UINT64_MAX); | |
2286 | assert(context->end == UINT64_MAX); | |
2287 | assert(context->total == UINT64_MAX); | |
e594a3b1 | 2288 | |
e1878ef7 DDM |
2289 | c = fdisk_new_context(); |
2290 | if (!c) | |
2291 | return log_oom(); | |
2292 | ||
93f125a6 | 2293 | if (arg_sector_size > 0) { |
93f125a6 | 2294 | fs_secsz = arg_sector_size; |
5f13fb0a | 2295 | r = fdisk_save_user_sector_size(c, /* phy= */ 0, arg_sector_size); |
93f125a6 | 2296 | } else { |
6c54e1d6 | 2297 | uint32_t ssz; |
93f125a6 | 2298 | struct stat st; |
6c54e1d6 | 2299 | |
3cdcf4e2 DDM |
2300 | r = context_open_and_lock_backing_fd(context->node, arg_dry_run ? LOCK_SH : LOCK_EX, |
2301 | &context->backing_fd); | |
37734dc6 YW |
2302 | if (r < 0) |
2303 | return r; | |
6c54e1d6 | 2304 | |
93f125a6 DDM |
2305 | if (fstat(context->backing_fd, &st) < 0) |
2306 | return log_error_errno(r, "Failed to stat %s: %m", context->node); | |
2307 | ||
6c54e1d6 LP |
2308 | /* Auto-detect sector size if not specified. */ |
2309 | r = probe_sector_size_prefer_ioctl(context->backing_fd, &ssz); | |
e1878ef7 | 2310 | if (r < 0) |
6c54e1d6 LP |
2311 | return log_error_errno(r, "Failed to probe sector size of '%s': %m", context->node); |
2312 | ||
93f125a6 DDM |
2313 | /* If we found the sector size and we're operating on a block device, use it as the file |
2314 | * system sector size as well, as we know its the sector size of the actual block device and | |
2315 | * not just the offset at which we found the GPT header. */ | |
2316 | if (r > 0 && S_ISBLK(st.st_mode)) | |
2317 | fs_secsz = ssz; | |
2318 | ||
6c54e1d6 | 2319 | r = fdisk_save_user_sector_size(c, /* phy= */ 0, ssz); |
e1878ef7 | 2320 | } |
6c54e1d6 LP |
2321 | if (r < 0) |
2322 | return log_error_errno(r, "Failed to set sector size: %m"); | |
e1878ef7 | 2323 | |
a26f4a49 LP |
2324 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
2325 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
e1878ef7 DDM |
2326 | r = fdisk_assign_device( |
2327 | c, | |
2328 | context->backing_fd >= 0 ? FORMAT_PROC_FD_PATH(context->backing_fd) : context->node, | |
2329 | arg_dry_run); | |
170c9823 LP |
2330 | if (r == -EINVAL && arg_size_auto) { |
2331 | struct stat st; | |
2332 | ||
2333 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
2334 | * it if automatic sizing is requested. */ | |
2335 | ||
cc751c75 DDM |
2336 | if (context->backing_fd < 0) |
2337 | r = stat(context->node, &st); | |
170c9823 | 2338 | else |
cc751c75 | 2339 | r = fstat(context->backing_fd, &st); |
170c9823 | 2340 | if (r < 0) |
cc751c75 | 2341 | return log_error_errno(errno, "Failed to stat block device '%s': %m", context->node); |
170c9823 | 2342 | |
994b3031 | 2343 | if (S_ISREG(st.st_mode) && st.st_size == 0) { |
264668a8 | 2344 | /* Use the fallback values if we have no better idea */ |
93f125a6 DDM |
2345 | context->sector_size = fdisk_get_sector_size(c); |
2346 | context->fs_sector_size = fs_secsz; | |
994b3031 | 2347 | context->grain_size = 4096; |
170c9823 | 2348 | return /* from_scratch = */ true; |
994b3031 | 2349 | } |
170c9823 LP |
2350 | |
2351 | r = -EINVAL; | |
2352 | } | |
e594a3b1 | 2353 | if (r < 0) |
cc751c75 | 2354 | return log_error_errno(r, "Failed to open device '%s': %m", context->node); |
a26f4a49 | 2355 | |
cc751c75 | 2356 | if (context->backing_fd < 0) { |
a26f4a49 | 2357 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ |
3cdcf4e2 DDM |
2358 | r = context_open_and_lock_backing_fd(FORMAT_PROC_FD_PATH(fdisk_get_devfd(c)), |
2359 | arg_dry_run ? LOCK_SH : LOCK_EX, | |
2360 | &context->backing_fd); | |
37734dc6 YW |
2361 | if (r < 0) |
2362 | return r; | |
25baae50 | 2363 | } |
e594a3b1 | 2364 | |
994b3031 LP |
2365 | /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the |
2366 | * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use | |
2367 | * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean | |
2368 | * the same thing universally. Also note that regardless what kind of sector size is in use we'll | |
2369 | * place partitions at multiples of 4K. */ | |
2370 | secsz = fdisk_get_sector_size(c); | |
2371 | ||
2372 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
983ce0b5 LP |
2373 | if (secsz < 512 || !ISPOWEROF2(secsz)) |
2374 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
994b3031 LP |
2375 | |
2376 | /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or | |
2377 | * larger */ | |
2378 | grainsz = secsz < 4096 ? 4096 : secsz; | |
2379 | ||
2380 | log_debug("Sector size of device is %lu bytes. Using grain size of %" PRIu64 ".", secsz, grainsz); | |
2381 | ||
e594a3b1 LP |
2382 | switch (arg_empty) { |
2383 | ||
2384 | case EMPTY_REFUSE: | |
2385 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
2386 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2387 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2388 | |
2389 | break; | |
2390 | ||
2391 | case EMPTY_REQUIRE: | |
2392 | /* Require an empty disk, refuse any existing partition table */ | |
2393 | r = fdisk_has_label(c); | |
2394 | if (r < 0) | |
cc751c75 | 2395 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 | 2396 | if (r > 0) |
cc751c75 | 2397 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", context->node); |
e594a3b1 LP |
2398 | |
2399 | from_scratch = true; | |
2400 | break; | |
2401 | ||
2402 | case EMPTY_ALLOW: | |
2403 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
2404 | r = fdisk_has_label(c); | |
2405 | if (r < 0) | |
cc751c75 | 2406 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 LP |
2407 | if (r > 0) { |
2408 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2409 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2410 | } else |
2411 | from_scratch = true; | |
2412 | ||
2413 | break; | |
2414 | ||
2415 | case EMPTY_FORCE: | |
a26f4a49 | 2416 | case EMPTY_CREATE: |
e594a3b1 LP |
2417 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
2418 | from_scratch = true; | |
2419 | break; | |
243dd1e9 LP |
2420 | |
2421 | case EMPTY_UNSET: | |
2422 | assert_not_reached(); | |
e594a3b1 LP |
2423 | } |
2424 | ||
2425 | if (from_scratch) { | |
e594a3b1 LP |
2426 | r = fdisk_create_disklabel(c, "gpt"); |
2427 | if (r < 0) | |
2428 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
2429 | ||
53171c04 | 2430 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2431 | if (r < 0) |
2432 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2433 | ||
2434 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
2435 | if (r < 0) | |
2436 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2437 | ||
2438 | goto add_initial_free_area; | |
2439 | } | |
2440 | ||
2441 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
2442 | if (r < 0) | |
2443 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
2444 | ||
aea3f594 ZJS |
2445 | r = id128_from_string_nonzero(disk_uuid_string, &disk_uuid); |
2446 | if (r == -ENXIO) { | |
53171c04 | 2447 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2448 | if (r < 0) |
2449 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2450 | ||
2451 | r = fdisk_set_disklabel_id(c); | |
2452 | if (r < 0) | |
2453 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
aea3f594 ZJS |
2454 | } else if (r < 0) |
2455 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
e594a3b1 LP |
2456 | |
2457 | r = fdisk_get_partitions(c, &t); | |
2458 | if (r < 0) | |
2459 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
2460 | ||
2461 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 2462 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 | 2463 | _cleanup_free_ char *label_copy = NULL; |
03677889 | 2464 | Partition *last = NULL; |
e594a3b1 | 2465 | struct fdisk_partition *p; |
63b96eb9 | 2466 | const char *label; |
e594a3b1 LP |
2467 | uint64_t sz, start; |
2468 | bool found = false; | |
2469 | sd_id128_t ptid, id; | |
2470 | size_t partno; | |
2471 | ||
2472 | p = fdisk_table_get_partition(t, i); | |
2473 | if (!p) | |
2474 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
2475 | ||
2476 | if (fdisk_partition_is_used(p) <= 0) | |
2477 | continue; | |
2478 | ||
2479 | if (fdisk_partition_has_start(p) <= 0 || | |
2480 | fdisk_partition_has_size(p) <= 0 || | |
2481 | fdisk_partition_has_partno(p) <= 0) | |
2482 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
2483 | ||
63b96eb9 | 2484 | r = fdisk_partition_get_type_as_id128(p, &ptid); |
e594a3b1 | 2485 | if (r < 0) |
63b96eb9 | 2486 | return log_error_errno(r, "Failed to query partition type UUID: %m"); |
e594a3b1 | 2487 | |
02e32aa6 | 2488 | r = fdisk_partition_get_uuid_as_id128(p, &id); |
e594a3b1 | 2489 | if (r < 0) |
02e32aa6 | 2490 | return log_error_errno(r, "Failed to query partition UUID: %m"); |
e594a3b1 LP |
2491 | |
2492 | label = fdisk_partition_get_name(p); | |
2493 | if (!isempty(label)) { | |
2494 | label_copy = strdup(label); | |
2495 | if (!label_copy) | |
2496 | return log_oom(); | |
2497 | } | |
2498 | ||
2499 | sz = fdisk_partition_get_size(p); | |
ac33e147 | 2500 | assert(sz <= UINT64_MAX/secsz); |
994b3031 | 2501 | sz *= secsz; |
e594a3b1 LP |
2502 | |
2503 | start = fdisk_partition_get_start(p); | |
ac33e147 | 2504 | assert(start <= UINT64_MAX/secsz); |
994b3031 | 2505 | start *= secsz; |
e594a3b1 LP |
2506 | |
2507 | partno = fdisk_partition_get_partno(p); | |
2508 | ||
2509 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
2510 | left_boundary = start; | |
2511 | ||
2512 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
2513 | * an existing one assigned yet. */ | |
2514 | LIST_FOREACH(partitions, pp, context->partitions) { | |
2515 | last = pp; | |
2516 | ||
22e932f4 | 2517 | if (!sd_id128_equal(pp->type.uuid, ptid)) |
e594a3b1 LP |
2518 | continue; |
2519 | ||
2520 | if (!pp->current_partition) { | |
2521 | pp->current_uuid = id; | |
2522 | pp->current_size = sz; | |
2523 | pp->offset = start; | |
2524 | pp->partno = partno; | |
2525 | pp->current_label = TAKE_PTR(label_copy); | |
2526 | ||
2527 | pp->current_partition = p; | |
2528 | fdisk_ref_partition(p); | |
2529 | ||
994b3031 | 2530 | r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding); |
e594a3b1 LP |
2531 | if (r < 0) |
2532 | return r; | |
2533 | ||
2534 | if (pp->current_padding > 0) { | |
2535 | r = context_add_free_area(context, pp->current_padding, pp); | |
2536 | if (r < 0) | |
2537 | return r; | |
2538 | } | |
2539 | ||
2540 | found = true; | |
2541 | break; | |
2542 | } | |
2543 | } | |
2544 | ||
2545 | /* If we have no matching definition, create a new one. */ | |
2546 | if (!found) { | |
2547 | _cleanup_(partition_freep) Partition *np = NULL; | |
2548 | ||
2549 | np = partition_new(); | |
2550 | if (!np) | |
2551 | return log_oom(); | |
2552 | ||
2553 | np->current_uuid = id; | |
22e932f4 | 2554 | np->type = gpt_partition_type_from_uuid(ptid); |
e594a3b1 LP |
2555 | np->current_size = sz; |
2556 | np->offset = start; | |
2557 | np->partno = partno; | |
2558 | np->current_label = TAKE_PTR(label_copy); | |
2559 | ||
2560 | np->current_partition = p; | |
2561 | fdisk_ref_partition(p); | |
2562 | ||
994b3031 | 2563 | r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding); |
e594a3b1 LP |
2564 | if (r < 0) |
2565 | return r; | |
2566 | ||
2567 | if (np->current_padding > 0) { | |
2568 | r = context_add_free_area(context, np->current_padding, np); | |
2569 | if (r < 0) | |
2570 | return r; | |
2571 | } | |
2572 | ||
2573 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
2574 | context->n_partitions++; | |
2575 | } | |
2576 | } | |
2577 | ||
2578 | add_initial_free_area: | |
2579 | nsectors = fdisk_get_nsectors(c); | |
994b3031 LP |
2580 | assert(nsectors <= UINT64_MAX/secsz); |
2581 | nsectors *= secsz; | |
e594a3b1 LP |
2582 | |
2583 | first_lba = fdisk_get_first_lba(c); | |
994b3031 LP |
2584 | assert(first_lba <= UINT64_MAX/secsz); |
2585 | first_lba *= secsz; | |
e594a3b1 LP |
2586 | |
2587 | last_lba = fdisk_get_last_lba(c); | |
2588 | assert(last_lba < UINT64_MAX); | |
2589 | last_lba++; | |
994b3031 LP |
2590 | assert(last_lba <= UINT64_MAX/secsz); |
2591 | last_lba *= secsz; | |
e594a3b1 LP |
2592 | |
2593 | assert(last_lba >= first_lba); | |
2594 | ||
2595 | if (left_boundary == UINT64_MAX) { | |
2596 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
2597 | ||
994b3031 LP |
2598 | first_lba = round_up_size(first_lba, grainsz); |
2599 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2600 | |
2601 | if (last_lba > first_lba) { | |
2602 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
2603 | if (r < 0) | |
2604 | return r; | |
2605 | } | |
2606 | } else { | |
2607 | /* Add space left of first partition */ | |
2608 | assert(left_boundary >= first_lba); | |
2609 | ||
994b3031 LP |
2610 | first_lba = round_up_size(first_lba, grainsz); |
2611 | left_boundary = round_down_size(left_boundary, grainsz); | |
2612 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2613 | |
2614 | if (left_boundary > first_lba) { | |
2615 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
2616 | if (r < 0) | |
2617 | return r; | |
2618 | } | |
2619 | } | |
2620 | ||
2621 | context->start = first_lba; | |
2622 | context->end = last_lba; | |
2623 | context->total = nsectors; | |
994b3031 | 2624 | context->sector_size = secsz; |
93f125a6 | 2625 | context->fs_sector_size = fs_secsz; |
994b3031 | 2626 | context->grain_size = grainsz; |
e594a3b1 LP |
2627 | context->fdisk_context = TAKE_PTR(c); |
2628 | ||
2629 | return from_scratch; | |
2630 | } | |
2631 | ||
2632 | static void context_unload_partition_table(Context *context) { | |
e594a3b1 LP |
2633 | assert(context); |
2634 | ||
80a226b2 | 2635 | LIST_FOREACH(partitions, p, context->partitions) { |
e594a3b1 LP |
2636 | |
2637 | /* Entirely remove partitions that have no configuration */ | |
2638 | if (PARTITION_IS_FOREIGN(p)) { | |
2639 | partition_unlink_and_free(context, p); | |
2640 | continue; | |
2641 | } | |
2642 | ||
2643 | /* Otherwise drop all data we read off the block device and everything we might have | |
2644 | * calculated based on it */ | |
2645 | ||
2646 | p->dropped = false; | |
2647 | p->current_size = UINT64_MAX; | |
2648 | p->new_size = UINT64_MAX; | |
2649 | p->current_padding = UINT64_MAX; | |
2650 | p->new_padding = UINT64_MAX; | |
2651 | p->partno = UINT64_MAX; | |
2652 | p->offset = UINT64_MAX; | |
2653 | ||
2654 | if (p->current_partition) { | |
2655 | fdisk_unref_partition(p->current_partition); | |
2656 | p->current_partition = NULL; | |
2657 | } | |
2658 | ||
2659 | if (p->new_partition) { | |
2660 | fdisk_unref_partition(p->new_partition); | |
2661 | p->new_partition = NULL; | |
2662 | } | |
2663 | ||
2664 | p->padding_area = NULL; | |
2665 | p->allocated_to_area = NULL; | |
2666 | ||
15d43e30 LP |
2667 | p->current_uuid = SD_ID128_NULL; |
2668 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
2669 | } |
2670 | ||
2671 | context->start = UINT64_MAX; | |
2672 | context->end = UINT64_MAX; | |
2673 | context->total = UINT64_MAX; | |
2674 | ||
2675 | if (context->fdisk_context) { | |
2676 | fdisk_unref_context(context->fdisk_context); | |
2677 | context->fdisk_context = NULL; | |
2678 | } | |
2679 | ||
2680 | context_free_free_areas(context); | |
2681 | } | |
2682 | ||
2683 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
2b59bf51 | 2684 | char *t; |
e594a3b1 LP |
2685 | |
2686 | if (from != UINT64_MAX) { | |
2687 | if (from == to || to == UINT64_MAX) | |
2b59bf51 | 2688 | t = strdup(FORMAT_BYTES(from)); |
e594a3b1 | 2689 | else |
fc03e80c | 2690 | t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 | 2691 | } else if (to != UINT64_MAX) |
fc03e80c | 2692 | t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 LP |
2693 | else { |
2694 | *ret = NULL; | |
2695 | return 0; | |
2696 | } | |
2697 | ||
2b59bf51 | 2698 | if (!t) |
e594a3b1 LP |
2699 | return log_oom(); |
2700 | ||
2b59bf51 | 2701 | *ret = t; |
e594a3b1 LP |
2702 | return 1; |
2703 | } | |
2704 | ||
2705 | static const char *partition_label(const Partition *p) { | |
2706 | assert(p); | |
2707 | ||
2708 | if (p->new_label) | |
2709 | return p->new_label; | |
2710 | ||
2711 | if (p->current_label) | |
2712 | return p->current_label; | |
2713 | ||
22e932f4 | 2714 | return gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
2715 | } |
2716 | ||
cc751c75 | 2717 | static int context_dump_partitions(Context *context) { |
e594a3b1 LP |
2718 | _cleanup_(table_unrefp) Table *t = NULL; |
2719 | uint64_t sum_padding = 0, sum_size = 0; | |
e594a3b1 | 2720 | int r; |
1ffa5cfb | 2721 | const size_t roothash_col = 14, dropin_files_col = 15, split_path_col = 16; |
bf030f55 | 2722 | bool has_roothash = false, has_dropin_files = false, has_split_path = false; |
e594a3b1 | 2723 | |
6a01ea4a | 2724 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
2725 | log_info("Empty partition table."); |
2726 | return 0; | |
2727 | } | |
2728 | ||
bf030f55 DDM |
2729 | t = table_new("type", |
2730 | "label", | |
2731 | "uuid", | |
1ffa5cfb | 2732 | "partno", |
bf030f55 DDM |
2733 | "file", |
2734 | "node", | |
2735 | "offset", | |
2736 | "old size", | |
2737 | "raw size", | |
2738 | "size", | |
2739 | "old padding", | |
2740 | "raw padding", | |
2741 | "padding", | |
2742 | "activity", | |
2743 | "roothash", | |
2744 | "drop-in files", | |
2745 | "split path"); | |
e594a3b1 LP |
2746 | if (!t) |
2747 | return log_oom(); | |
2748 | ||
a015fbe7 | 2749 | if (!DEBUG_LOGGING) { |
6a01ea4a | 2750 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 2751 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
1ffa5cfb | 2752 | (size_t) 8, (size_t) 9, (size_t) 12, roothash_col, dropin_files_col, |
bf030f55 | 2753 | split_path_col); |
a015fbe7 TH |
2754 | else |
2755 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
1ffa5cfb DDM |
2756 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 8, (size_t) 10, |
2757 | (size_t) 11, (size_t) 13, roothash_col, dropin_files_col, | |
bf030f55 | 2758 | split_path_col); |
a015fbe7 | 2759 | } |
e594a3b1 | 2760 | |
e594a3b1 | 2761 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
2762 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
2763 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
2764 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
2765 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
2766 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
2767 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
2768 | |
2769 | LIST_FOREACH(partitions, p, context->partitions) { | |
b5b7879a | 2770 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL; |
b7416360 | 2771 | char uuid_buffer[SD_ID128_UUID_STRING_MAX]; |
a015fbe7 | 2772 | const char *label, *activity = NULL; |
e594a3b1 LP |
2773 | |
2774 | if (p->dropped) | |
2775 | continue; | |
2776 | ||
a015fbe7 TH |
2777 | if (p->current_size == UINT64_MAX) |
2778 | activity = "create"; | |
2779 | else if (p->current_size != p->new_size) | |
2780 | activity = "resize"; | |
2781 | ||
e594a3b1 | 2782 | label = partition_label(p); |
cc751c75 | 2783 | partname = p->partno != UINT64_MAX ? fdisk_partname(context->node, p->partno+1) : NULL; |
e594a3b1 LP |
2784 | |
2785 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2786 | if (r < 0) | |
2787 | return r; | |
2788 | ||
2789 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2790 | if (r < 0) | |
2791 | return r; | |
2792 | ||
2793 | if (p->new_size != UINT64_MAX) | |
2794 | sum_size += p->new_size; | |
2795 | if (p->new_padding != UINT64_MAX) | |
2796 | sum_padding += p->new_padding; | |
2797 | ||
2ecc7a5b DDM |
2798 | if (p->verity != VERITY_OFF) { |
2799 | Partition *hp = p->verity == VERITY_HASH ? p : p->siblings[VERITY_HASH]; | |
2800 | ||
2801 | rh = hp->roothash ? hexmem(hp->roothash, hp->roothash_size) : strdup("TBD"); | |
b5b7879a DDM |
2802 | if (!rh) |
2803 | return log_oom(); | |
2804 | } | |
2805 | ||
e594a3b1 LP |
2806 | r = table_add_many( |
2807 | t, | |
22e932f4 | 2808 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type.uuid, uuid_buffer), |
be9ce018 | 2809 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
11749b61 | 2810 | TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid, |
1ffa5cfb | 2811 | TABLE_UINT64, p->partno, |
d0242ac9 | 2812 | TABLE_PATH_BASENAME, p->definition_path, TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), |
a015fbe7 | 2813 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2814 | TABLE_UINT64, p->offset, |
a015fbe7 | 2815 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2816 | TABLE_UINT64, p->new_size, |
2817 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2818 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2819 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2820 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
39fc0174 | 2821 | TABLE_STRING, activity ?: "unchanged", |
b5b7879a | 2822 | TABLE_STRING, rh, |
bf030f55 DDM |
2823 | TABLE_STRV, p->drop_in_files, |
2824 | TABLE_STRING, empty_to_null(p->split_path) ?: "-"); | |
e594a3b1 | 2825 | if (r < 0) |
f987a261 | 2826 | return table_log_add_error(r); |
39fc0174 | 2827 | |
b5b7879a | 2828 | has_roothash = has_roothash || !isempty(rh); |
3ab44dbd | 2829 | has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files); |
bf030f55 | 2830 | has_split_path = has_split_path || !isempty(p->split_path); |
e594a3b1 LP |
2831 | } |
2832 | ||
6a01ea4a | 2833 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2834 | const char *a, *b; |
2835 | ||
2b59bf51 ZJS |
2836 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size)); |
2837 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding)); | |
e594a3b1 LP |
2838 | |
2839 | r = table_add_many( | |
2840 | t, | |
2841 | TABLE_EMPTY, | |
2842 | TABLE_EMPTY, | |
2843 | TABLE_EMPTY, | |
2844 | TABLE_EMPTY, | |
2845 | TABLE_EMPTY, | |
2846 | TABLE_EMPTY, | |
2847 | TABLE_EMPTY, | |
1ffa5cfb | 2848 | TABLE_EMPTY, |
a015fbe7 | 2849 | TABLE_EMPTY, |
e594a3b1 LP |
2850 | TABLE_STRING, a, |
2851 | TABLE_EMPTY, | |
a015fbe7 TH |
2852 | TABLE_EMPTY, |
2853 | TABLE_STRING, b, | |
39fc0174 | 2854 | TABLE_EMPTY, |
b5b7879a | 2855 | TABLE_EMPTY, |
bf030f55 | 2856 | TABLE_EMPTY, |
a015fbe7 | 2857 | TABLE_EMPTY); |
e594a3b1 | 2858 | if (r < 0) |
f987a261 | 2859 | return table_log_add_error(r); |
e594a3b1 LP |
2860 | } |
2861 | ||
b5b7879a DDM |
2862 | if (!has_roothash) { |
2863 | r = table_hide_column_from_display(t, roothash_col); | |
2864 | if (r < 0) | |
2865 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2866 | } | |
2867 | ||
3ab44dbd | 2868 | if (!has_dropin_files) { |
39fc0174 RP |
2869 | r = table_hide_column_from_display(t, dropin_files_col); |
2870 | if (r < 0) | |
2871 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2872 | } | |
2873 | ||
bf030f55 DDM |
2874 | if (!has_split_path) { |
2875 | r = table_hide_column_from_display(t, split_path_col); | |
2876 | if (r < 0) | |
2877 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2878 | } | |
2879 | ||
896e678b | 2880 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2881 | } |
2882 | ||
2883 | static void context_bar_char_process_partition( | |
2884 | Context *context, | |
2885 | Partition *bar[], | |
2886 | size_t n, | |
2887 | Partition *p, | |
2888 | size_t *ret_start) { | |
2889 | ||
2890 | uint64_t from, to, total; | |
2891 | size_t x, y; | |
2892 | ||
2893 | assert(context); | |
2894 | assert(bar); | |
2895 | assert(n > 0); | |
2896 | assert(p); | |
2897 | ||
2898 | if (p->dropped) | |
2899 | return; | |
2900 | ||
2901 | assert(p->offset != UINT64_MAX); | |
2902 | assert(p->new_size != UINT64_MAX); | |
2903 | ||
2904 | from = p->offset; | |
2905 | to = from + p->new_size; | |
2906 | ||
d8daed09 TY |
2907 | assert(context->total > 0); |
2908 | total = context->total; | |
e594a3b1 | 2909 | |
d8daed09 TY |
2910 | assert(from <= total); |
2911 | x = from * n / total; | |
e594a3b1 | 2912 | |
d8daed09 TY |
2913 | assert(to <= total); |
2914 | y = to * n / total; | |
e594a3b1 LP |
2915 | |
2916 | assert(x <= y); | |
2917 | assert(y <= n); | |
2918 | ||
2919 | for (size_t i = x; i < y; i++) | |
2920 | bar[i] = p; | |
2921 | ||
2922 | *ret_start = x; | |
2923 | } | |
2924 | ||
2925 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2926 | _cleanup_free_ char *buf = NULL; | |
e594a3b1 LP |
2927 | const char *label; |
2928 | sd_id128_t id; | |
2929 | ||
2930 | /* Tries really hard to find a suitable description for this partition */ | |
2931 | ||
7b2ffb59 LP |
2932 | if (p->definition_path) |
2933 | return path_extract_filename(p->definition_path, ret); | |
e594a3b1 LP |
2934 | |
2935 | label = partition_label(p); | |
2936 | if (!isempty(label)) { | |
2937 | buf = strdup(label); | |
2938 | goto done; | |
2939 | } | |
2940 | ||
2941 | if (p->partno != UINT64_MAX) { | |
2942 | buf = fdisk_partname(node, p->partno+1); | |
2943 | goto done; | |
2944 | } | |
2945 | ||
11749b61 | 2946 | if (p->new_uuid_is_set) |
e594a3b1 LP |
2947 | id = p->new_uuid; |
2948 | else if (!sd_id128_is_null(p->current_uuid)) | |
2949 | id = p->current_uuid; | |
2950 | else | |
22e932f4 | 2951 | id = p->type.uuid; |
e594a3b1 | 2952 | |
b7416360 | 2953 | buf = strdup(SD_ID128_TO_UUID_STRING(id)); |
e594a3b1 LP |
2954 | |
2955 | done: | |
2956 | if (!buf) | |
2957 | return -ENOMEM; | |
2958 | ||
2959 | *ret = TAKE_PTR(buf); | |
2960 | return 0; | |
2961 | } | |
2962 | ||
cc751c75 | 2963 | static int context_dump_partition_bar(Context *context) { |
e594a3b1 LP |
2964 | _cleanup_free_ Partition **bar = NULL; |
2965 | _cleanup_free_ size_t *start_array = NULL; | |
03677889 | 2966 | Partition *last = NULL; |
e594a3b1 LP |
2967 | bool z = false; |
2968 | size_t c, j = 0; | |
2969 | ||
f391597c | 2970 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2971 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2972 | ||
2973 | bar = new0(Partition*, c); | |
2974 | if (!bar) | |
2975 | return log_oom(); | |
2976 | ||
2977 | start_array = new(size_t, context->n_partitions); | |
2978 | if (!start_array) | |
2979 | return log_oom(); | |
2980 | ||
2981 | LIST_FOREACH(partitions, p, context->partitions) | |
2982 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2983 | ||
2984 | putc(' ', stdout); | |
2985 | ||
2986 | for (size_t i = 0; i < c; i++) { | |
2987 | if (bar[i]) { | |
2988 | if (last != bar[i]) | |
2989 | z = !z; | |
2990 | ||
2991 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2992 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2993 | } else { | |
2994 | fputs(ansi_normal(), stdout); | |
2995 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2996 | } | |
2997 | ||
2998 | last = bar[i]; | |
2999 | } | |
3000 | ||
3001 | fputs(ansi_normal(), stdout); | |
3002 | putc('\n', stdout); | |
3003 | ||
3004 | for (size_t i = 0; i < context->n_partitions; i++) { | |
3005 | _cleanup_free_ char **line = NULL; | |
3006 | ||
3007 | line = new0(char*, c); | |
3008 | if (!line) | |
3009 | return log_oom(); | |
3010 | ||
3011 | j = 0; | |
3012 | LIST_FOREACH(partitions, p, context->partitions) { | |
3013 | _cleanup_free_ char *d = NULL; | |
3014 | j++; | |
3015 | ||
3016 | if (i < context->n_partitions - j) { | |
3017 | ||
3018 | if (line[start_array[j-1]]) { | |
3019 | const char *e; | |
3020 | ||
3021 | /* Upgrade final corner to the right with a branch to the right */ | |
3022 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
3023 | if (e) { | |
3024 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
3025 | if (!d) | |
3026 | return log_oom(); | |
3027 | } | |
3028 | } | |
3029 | ||
3030 | if (!d) { | |
3031 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
3032 | if (!d) | |
3033 | return log_oom(); | |
3034 | } | |
3035 | ||
3036 | } else if (i == context->n_partitions - j) { | |
3037 | _cleanup_free_ char *hint = NULL; | |
3038 | ||
cc751c75 | 3039 | (void) partition_hint(p, context->node, &hint); |
e594a3b1 LP |
3040 | |
3041 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
3042 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
3043 | else | |
3044 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
3045 | ||
3046 | if (!d) | |
3047 | return log_oom(); | |
3048 | } | |
3049 | ||
3050 | if (d) | |
3051 | free_and_replace(line[start_array[j-1]], d); | |
3052 | } | |
3053 | ||
3054 | putc(' ', stdout); | |
3055 | ||
3056 | j = 0; | |
3057 | while (j < c) { | |
3058 | if (line[j]) { | |
3059 | fputs(line[j], stdout); | |
3060 | j += utf8_console_width(line[j]); | |
3061 | } else { | |
3062 | putc(' ', stdout); | |
3063 | j++; | |
3064 | } | |
3065 | } | |
3066 | ||
3067 | putc('\n', stdout); | |
3068 | ||
3069 | for (j = 0; j < c; j++) | |
3070 | free(line[j]); | |
3071 | } | |
3072 | ||
3073 | return 0; | |
3074 | } | |
3075 | ||
b5b7879a DDM |
3076 | static bool context_has_roothash(Context *context) { |
3077 | LIST_FOREACH(partitions, p, context->partitions) | |
3078 | if (p->roothash) | |
3079 | return true; | |
3080 | ||
3081 | return false; | |
3082 | } | |
3083 | ||
cc751c75 | 3084 | static int context_dump(Context *context, bool late) { |
a26d463d DDM |
3085 | int r; |
3086 | ||
3087 | assert(context); | |
a26d463d DDM |
3088 | |
3089 | if (arg_pretty == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
3090 | return 0; | |
3091 | ||
b5b7879a DDM |
3092 | /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes |
3093 | * in the output. */ | |
3094 | if (!late && !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
3095 | return 0; | |
3096 | ||
3097 | /* If we're not outputting JSON, only dump again after doing all operations if there are any | |
3098 | * roothashes that we need to communicate to the user. */ | |
3099 | if (late && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !context_has_roothash(context)) | |
3100 | return 0; | |
3101 | ||
cc751c75 | 3102 | r = context_dump_partitions(context); |
a26d463d DDM |
3103 | if (r < 0) |
3104 | return r; | |
3105 | ||
b5b7879a DDM |
3106 | /* Make sure we only write the partition bar once, even if we're writing the partition table twice to |
3107 | * communicate roothashes. */ | |
3108 | if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !late) { | |
a26d463d DDM |
3109 | putc('\n', stdout); |
3110 | ||
cc751c75 | 3111 | r = context_dump_partition_bar(context); |
a26d463d DDM |
3112 | if (r < 0) |
3113 | return r; | |
3114 | ||
3115 | putc('\n', stdout); | |
3116 | } | |
3117 | ||
3118 | fflush(stdout); | |
3119 | ||
3120 | return 0; | |
3121 | } | |
3122 | ||
3123 | ||
e594a3b1 | 3124 | static bool context_changed(const Context *context) { |
03677889 | 3125 | assert(context); |
e594a3b1 LP |
3126 | |
3127 | LIST_FOREACH(partitions, p, context->partitions) { | |
3128 | if (p->dropped) | |
3129 | continue; | |
3130 | ||
3131 | if (p->allocated_to_area) | |
3132 | return true; | |
3133 | ||
3134 | if (p->new_size != p->current_size) | |
3135 | return true; | |
3136 | } | |
3137 | ||
3138 | return false; | |
3139 | } | |
3140 | ||
81873a6b | 3141 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
3142 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
3143 | int r; | |
3144 | ||
3145 | assert(context); | |
81873a6b LP |
3146 | assert(offset != UINT64_MAX); |
3147 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
3148 | |
3149 | probe = blkid_new_probe(); | |
3150 | if (!probe) | |
3151 | return log_oom(); | |
3152 | ||
e594a3b1 | 3153 | errno = 0; |
81873a6b | 3154 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 3155 | if (r < 0) |
81873a6b | 3156 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
3157 | |
3158 | errno = 0; | |
3159 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
3160 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
3161 | blkid_probe_enable_partitions(probe, true) < 0 || | |
3162 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 3163 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
3164 | |
3165 | for (;;) { | |
3166 | errno = 0; | |
3167 | r = blkid_do_probe(probe); | |
3168 | if (r < 0) | |
3169 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
3170 | if (r > 0) | |
3171 | break; | |
3172 | ||
3173 | errno = 0; | |
3174 | if (blkid_do_wipe(probe, false) < 0) | |
3175 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
3176 | } | |
3177 | ||
e594a3b1 LP |
3178 | return 0; |
3179 | } | |
3180 | ||
81873a6b LP |
3181 | static int context_wipe_partition(Context *context, Partition *p) { |
3182 | int r; | |
3183 | ||
3184 | assert(context); | |
3185 | assert(p); | |
3186 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
3187 | ||
3188 | assert(p->offset != UINT64_MAX); | |
3189 | assert(p->new_size != UINT64_MAX); | |
3190 | ||
3191 | r = context_wipe_range(context, p->offset, p->new_size); | |
3192 | if (r < 0) | |
3193 | return r; | |
3194 | ||
3195 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
3196 | return 0; | |
3197 | } | |
3198 | ||
3199 | static int context_discard_range( | |
3200 | Context *context, | |
3201 | uint64_t offset, | |
3202 | uint64_t size) { | |
3203 | ||
e594a3b1 LP |
3204 | struct stat st; |
3205 | int fd; | |
3206 | ||
3207 | assert(context); | |
3208 | assert(offset != UINT64_MAX); | |
3209 | assert(size != UINT64_MAX); | |
3210 | ||
3211 | if (size <= 0) | |
3212 | return 0; | |
3213 | ||
a26f4a49 | 3214 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
3215 | |
3216 | if (fstat(fd, &st) < 0) | |
3217 | return -errno; | |
3218 | ||
3219 | if (S_ISREG(st.st_mode)) { | |
3220 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
3221 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
3222 | return -EOPNOTSUPP; | |
3223 | ||
3224 | return -errno; | |
3225 | } | |
3226 | ||
3227 | return 1; | |
3228 | } | |
3229 | ||
3230 | if (S_ISBLK(st.st_mode)) { | |
3231 | uint64_t range[2], end; | |
3232 | ||
994b3031 | 3233 | range[0] = round_up_size(offset, context->sector_size); |
e594a3b1 | 3234 | |
55d38014 LP |
3235 | if (offset > UINT64_MAX - size) |
3236 | return -ERANGE; | |
3237 | ||
e594a3b1 LP |
3238 | end = offset + size; |
3239 | if (end <= range[0]) | |
3240 | return 0; | |
3241 | ||
994b3031 | 3242 | range[1] = round_down_size(end - range[0], context->sector_size); |
e594a3b1 LP |
3243 | if (range[1] <= 0) |
3244 | return 0; | |
3245 | ||
3246 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
3247 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
3248 | return -EOPNOTSUPP; | |
3249 | ||
3250 | return -errno; | |
3251 | } | |
3252 | ||
3253 | return 1; | |
3254 | } | |
3255 | ||
3256 | return -EOPNOTSUPP; | |
3257 | } | |
3258 | ||
3259 | static int context_discard_partition(Context *context, Partition *p) { | |
3260 | int r; | |
3261 | ||
3262 | assert(context); | |
3263 | assert(p); | |
3264 | ||
3265 | assert(p->offset != UINT64_MAX); | |
3266 | assert(p->new_size != UINT64_MAX); | |
3267 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
3268 | ||
3269 | if (!arg_discard) | |
3270 | return 0; | |
3271 | ||
3272 | r = context_discard_range(context, p->offset, p->new_size); | |
3273 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 3274 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
3275 | return 0; |
3276 | } | |
22163eb5 LP |
3277 | if (r == -EBUSY) { |
3278 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
3279 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
3280 | return 0; | |
3281 | } | |
e594a3b1 LP |
3282 | if (r == 0) { |
3283 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
3284 | return 0; | |
3285 | } | |
3286 | if (r < 0) | |
5b5109e2 | 3287 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 3288 | |
5b5109e2 | 3289 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
3290 | return 1; |
3291 | } | |
3292 | ||
3293 | static int context_discard_gap_after(Context *context, Partition *p) { | |
3294 | uint64_t gap, next = UINT64_MAX; | |
e594a3b1 LP |
3295 | int r; |
3296 | ||
3297 | assert(context); | |
3298 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
3299 | ||
5113436b AF |
3300 | if (!arg_discard) |
3301 | return 0; | |
3302 | ||
e594a3b1 LP |
3303 | if (p) |
3304 | gap = p->offset + p->new_size; | |
3305 | else | |
771805eb SS |
3306 | /* The context start gets rounded up to grain_size, however |
3307 | * existing partitions may be before that so ensure the gap | |
3308 | * starts at the first actually usable lba | |
3309 | */ | |
3310 | gap = fdisk_get_first_lba(context->fdisk_context) * context->sector_size; | |
e594a3b1 LP |
3311 | |
3312 | LIST_FOREACH(partitions, q, context->partitions) { | |
3313 | if (q->dropped) | |
3314 | continue; | |
3315 | ||
3316 | assert(q->offset != UINT64_MAX); | |
3317 | assert(q->new_size != UINT64_MAX); | |
3318 | ||
3319 | if (q->offset < gap) | |
3320 | continue; | |
3321 | ||
3322 | if (next == UINT64_MAX || q->offset < next) | |
3323 | next = q->offset; | |
3324 | } | |
3325 | ||
3326 | if (next == UINT64_MAX) { | |
771805eb | 3327 | next = (fdisk_get_last_lba(context->fdisk_context) + 1) * context->sector_size; |
e594a3b1 LP |
3328 | if (gap > next) |
3329 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
3330 | } | |
3331 | ||
3332 | assert(next >= gap); | |
3333 | r = context_discard_range(context, gap, next - gap); | |
3334 | if (r == -EOPNOTSUPP) { | |
3335 | if (p) | |
5b5109e2 | 3336 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 3337 | else |
5b5109e2 | 3338 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
3339 | return 0; |
3340 | } | |
3341 | if (r == 0) /* Too short */ | |
3342 | return 0; | |
3343 | if (r < 0) { | |
3344 | if (p) | |
3345 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
3346 | else | |
3347 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
3348 | } | |
3349 | ||
3350 | if (p) | |
3351 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
3352 | else | |
3353 | log_info("Successfully discarded gap at beginning of disk."); | |
3354 | ||
3355 | return 0; | |
3356 | } | |
3357 | ||
cc751c75 | 3358 | static int context_wipe_and_discard(Context *context) { |
e594a3b1 LP |
3359 | int r; |
3360 | ||
3361 | assert(context); | |
3362 | ||
19c58989 LP |
3363 | if (arg_empty == EMPTY_CREATE) /* If we just created the image, no need to wipe */ |
3364 | return 0; | |
3365 | ||
e594a3b1 LP |
3366 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if |
3367 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
3368 | * device in one go early on. */ | |
3369 | ||
3370 | LIST_FOREACH(partitions, p, context->partitions) { | |
3371 | ||
3372 | if (!p->allocated_to_area) | |
3373 | continue; | |
3374 | ||
c74d50ff | 3375 | if (partition_type_defer(&p->type)) |
81d1098b DDM |
3376 | continue; |
3377 | ||
e594a3b1 LP |
3378 | r = context_wipe_partition(context, p); |
3379 | if (r < 0) | |
3380 | return r; | |
3381 | ||
cc751c75 | 3382 | if (!context->from_scratch) { |
f0cb1b95 LP |
3383 | r = context_discard_partition(context, p); |
3384 | if (r < 0) | |
3385 | return r; | |
3386 | ||
e594a3b1 LP |
3387 | r = context_discard_gap_after(context, p); |
3388 | if (r < 0) | |
3389 | return r; | |
3390 | } | |
3391 | } | |
3392 | ||
cc751c75 | 3393 | if (!context->from_scratch) { |
e594a3b1 LP |
3394 | r = context_discard_gap_after(context, NULL); |
3395 | if (r < 0) | |
3396 | return r; | |
3397 | } | |
3398 | ||
3399 | return 0; | |
3400 | } | |
3401 | ||
a09ae915 DDM |
3402 | typedef struct DecryptedPartitionTarget { |
3403 | int fd; | |
fd9b68d9 | 3404 | char *dm_name; |
a09ae915 DDM |
3405 | char *volume; |
3406 | struct crypt_device *device; | |
3407 | } DecryptedPartitionTarget; | |
3408 | ||
3409 | static DecryptedPartitionTarget* decrypted_partition_target_free(DecryptedPartitionTarget *t) { | |
465261bf | 3410 | #if HAVE_LIBCRYPTSETUP |
a09ae915 DDM |
3411 | int r; |
3412 | ||
3413 | if (!t) | |
3414 | return NULL; | |
3415 | ||
a09ae915 DDM |
3416 | safe_close(t->fd); |
3417 | ||
fd9b68d9 DDM |
3418 | /* udev or so might access out block device in the background while we are done. Let's hence |
3419 | * force detach the volume. We sync'ed before, hence this should be safe. */ | |
3420 | r = sym_crypt_deactivate_by_name(t->device, t->dm_name, CRYPT_DEACTIVATE_FORCE); | |
3421 | if (r < 0) | |
3422 | log_warning_errno(r, "Failed to deactivate LUKS device, ignoring: %m"); | |
a09ae915 DDM |
3423 | |
3424 | sym_crypt_free(t->device); | |
fd9b68d9 | 3425 | free(t->dm_name); |
a09ae915 DDM |
3426 | free(t->volume); |
3427 | free(t); | |
3428 | #endif | |
3429 | return NULL; | |
3430 | } | |
3431 | ||
a64769d6 DDM |
3432 | typedef struct { |
3433 | LoopDevice *loop; | |
3434 | int fd; | |
3435 | char *path; | |
3436 | int whole_fd; | |
a09ae915 | 3437 | DecryptedPartitionTarget *decrypted; |
a64769d6 DDM |
3438 | } PartitionTarget; |
3439 | ||
3440 | static int partition_target_fd(PartitionTarget *t) { | |
3441 | assert(t); | |
3442 | assert(t->loop || t->fd >= 0 || t->whole_fd >= 0); | |
a09ae915 DDM |
3443 | |
3444 | if (t->decrypted) | |
3445 | return t->decrypted->fd; | |
3446 | ||
3447 | if (t->loop) | |
3448 | return t->loop->fd; | |
3449 | ||
3450 | if (t->fd >= 0) | |
3451 | return t->fd; | |
3452 | ||
3453 | return t->whole_fd; | |
a64769d6 DDM |
3454 | } |
3455 | ||
3456 | static const char* partition_target_path(PartitionTarget *t) { | |
3457 | assert(t); | |
3458 | assert(t->loop || t->path); | |
a09ae915 DDM |
3459 | |
3460 | if (t->decrypted) | |
3461 | return t->decrypted->volume; | |
3462 | ||
3463 | if (t->loop) | |
3464 | return t->loop->node; | |
3465 | ||
3466 | return t->path; | |
a64769d6 DDM |
3467 | } |
3468 | ||
3469 | static PartitionTarget *partition_target_free(PartitionTarget *t) { | |
3470 | if (!t) | |
3471 | return NULL; | |
3472 | ||
a09ae915 | 3473 | decrypted_partition_target_free(t->decrypted); |
a64769d6 DDM |
3474 | loop_device_unref(t->loop); |
3475 | safe_close(t->fd); | |
3476 | unlink_and_free(t->path); | |
3477 | ||
3478 | return mfree(t); | |
3479 | } | |
3480 | ||
3481 | DEFINE_TRIVIAL_CLEANUP_FUNC(PartitionTarget*, partition_target_free); | |
3482 | ||
d3201eb4 DDM |
3483 | static int prepare_temporary_file(PartitionTarget *t, uint64_t size) { |
3484 | _cleanup_(unlink_and_freep) char *temp = NULL; | |
254d1313 | 3485 | _cleanup_close_ int fd = -EBADF; |
d3201eb4 DDM |
3486 | const char *vt; |
3487 | int r; | |
3488 | ||
3489 | assert(t); | |
3490 | ||
3491 | r = var_tmp_dir(&vt); | |
3492 | if (r < 0) | |
3493 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
3494 | ||
3495 | temp = path_join(vt, "repart-XXXXXX"); | |
3496 | if (!temp) | |
3497 | return log_oom(); | |
3498 | ||
3499 | fd = mkostemp_safe(temp); | |
3500 | if (fd < 0) | |
3501 | return log_error_errno(fd, "Failed to create temporary file: %m"); | |
3502 | ||
3503 | if (ftruncate(fd, size) < 0) | |
3504 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
3505 | FORMAT_BYTES(size)); | |
3506 | ||
3507 | t->fd = TAKE_FD(fd); | |
3508 | t->path = TAKE_PTR(temp); | |
3509 | ||
3510 | return 0; | |
3511 | } | |
3512 | ||
a64769d6 DDM |
3513 | static int partition_target_prepare( |
3514 | Context *context, | |
3515 | Partition *p, | |
3516 | uint64_t size, | |
3517 | bool need_path, | |
3518 | PartitionTarget **ret) { | |
3519 | ||
3520 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; | |
d3201eb4 DDM |
3521 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
3522 | int whole_fd, r; | |
a64769d6 DDM |
3523 | |
3524 | assert(context); | |
3525 | assert(p); | |
3526 | assert(ret); | |
3527 | ||
3528 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3529 | ||
6b1ea55e | 3530 | t = new(PartitionTarget, 1); |
a64769d6 DDM |
3531 | if (!t) |
3532 | return log_oom(); | |
6b1ea55e | 3533 | *t = (PartitionTarget) { |
254d1313 ZJS |
3534 | .fd = -EBADF, |
3535 | .whole_fd = -EBADF, | |
6b1ea55e | 3536 | }; |
a64769d6 | 3537 | |
d3201eb4 DDM |
3538 | if (!need_path) { |
3539 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3540 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
a64769d6 | 3541 | |
d3201eb4 DDM |
3542 | t->whole_fd = whole_fd; |
3543 | *ret = TAKE_PTR(t); | |
3544 | return 0; | |
3545 | } | |
a64769d6 | 3546 | |
d3201eb4 DDM |
3547 | /* Loopback block devices are not only useful to turn regular files into block devices, but |
3548 | * also to cut out sections of block devices into new block devices. */ | |
a64769d6 | 3549 | |
fc10b158 | 3550 | if (arg_offline <= 0) { |
66a8c74c | 3551 | r = loop_device_make(whole_fd, O_RDWR, p->offset, size, context->sector_size, 0, LOCK_EX, &d); |
ffd9d75c | 3552 | if (r < 0 && (arg_offline == 0 || (r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) || !strv_isempty(p->subvolumes))) |
fc10b158 DDM |
3553 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); |
3554 | if (r >= 0) { | |
3555 | t->loop = TAKE_PTR(d); | |
3556 | *ret = TAKE_PTR(t); | |
3557 | return 0; | |
3558 | } | |
3559 | ||
3560 | log_debug_errno(r, "No access to loop devices, falling back to a regular file"); | |
d3201eb4 | 3561 | } |
a64769d6 | 3562 | |
d3201eb4 DDM |
3563 | /* If we can't allocate a loop device, let's write to a regular file that we copy into the final |
3564 | * image so we can run in containers and without needing root privileges. On filesystems with | |
3565 | * reflinking support, we can take advantage of this and just reflink the result into the image. | |
3566 | */ | |
a64769d6 | 3567 | |
d3201eb4 DDM |
3568 | r = prepare_temporary_file(t, size); |
3569 | if (r < 0) | |
3570 | return r; | |
a64769d6 DDM |
3571 | |
3572 | *ret = TAKE_PTR(t); | |
3573 | ||
3574 | return 0; | |
3575 | } | |
3576 | ||
3577 | static int partition_target_grow(PartitionTarget *t, uint64_t size) { | |
3578 | int r; | |
3579 | ||
3580 | assert(t); | |
a09ae915 | 3581 | assert(!t->decrypted); |
a64769d6 DDM |
3582 | |
3583 | if (t->loop) { | |
3584 | r = loop_device_refresh_size(t->loop, UINT64_MAX, size); | |
3585 | if (r < 0) | |
3586 | return log_error_errno(r, "Failed to refresh loopback device size: %m"); | |
3587 | } else if (t->fd >= 0) { | |
3588 | if (ftruncate(t->fd, size) < 0) | |
3589 | return log_error_errno(errno, "Failed to grow '%s' to %s by truncation: %m", | |
3590 | t->path, FORMAT_BYTES(size)); | |
3591 | } | |
3592 | ||
3593 | return 0; | |
3594 | } | |
3595 | ||
3596 | static int partition_target_sync(Context *context, Partition *p, PartitionTarget *t) { | |
3597 | int whole_fd, r; | |
3598 | ||
3599 | assert(context); | |
3600 | assert(p); | |
3601 | assert(t); | |
3602 | ||
3603 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3604 | ||
a09ae915 DDM |
3605 | if (t->decrypted && fsync(t->decrypted->fd) < 0) |
3606 | return log_error_errno(errno, "Failed to sync changes to '%s': %m", t->decrypted->volume); | |
3607 | ||
a64769d6 DDM |
3608 | if (t->loop) { |
3609 | r = loop_device_sync(t->loop); | |
3610 | if (r < 0) | |
3611 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3612 | } else if (t->fd >= 0) { | |
e21be797 DDM |
3613 | struct stat st; |
3614 | ||
a64769d6 DDM |
3615 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) |
3616 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3617 | ||
6eccec00 DDM |
3618 | if (lseek(t->fd, 0, SEEK_SET) == (off_t) -1) |
3619 | return log_error_errno(errno, "Failed to seek to start of temporary file: %m"); | |
3620 | ||
e21be797 DDM |
3621 | if (fstat(t->fd, &st) < 0) |
3622 | return log_error_errno(errno, "Failed to stat temporary file: %m"); | |
3623 | ||
3624 | if (st.st_size > (off_t) p->new_size) | |
3625 | return log_error_errno(SYNTHETIC_ERRNO(ENOSPC), | |
3626 | "Partition %" PRIu64 "'s contents (%s) don't fit in the partition (%s)", | |
3627 | p->partno, FORMAT_BYTES(st.st_size), FORMAT_BYTES(p->new_size)); | |
3628 | ||
a64769d6 DDM |
3629 | r = copy_bytes(t->fd, whole_fd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_FSYNC); |
3630 | if (r < 0) | |
3631 | return log_error_errno(r, "Failed to copy bytes to partition: %m"); | |
3632 | } else { | |
3633 | if (fsync(t->whole_fd) < 0) | |
3634 | return log_error_errno(errno, "Failed to sync changes: %m"); | |
3635 | } | |
3636 | ||
3637 | return 0; | |
3638 | } | |
3639 | ||
a09ae915 | 3640 | static int partition_encrypt(Context *context, Partition *p, PartitionTarget *target, bool offline) { |
48a09a8f | 3641 | #if HAVE_LIBCRYPTSETUP && HAVE_CRYPT_SET_DATA_OFFSET && HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE && HAVE_CRYPT_REENCRYPT |
a09ae915 | 3642 | const char *node = partition_target_path(target); |
48a09a8f | 3643 | struct crypt_params_luks2 luks_params = { |
922576e4 | 3644 | .label = strempty(ASSERT_PTR(p)->new_label), |
93f125a6 | 3645 | .sector_size = ASSERT_PTR(context)->fs_sector_size, |
a09ae915 | 3646 | .data_device = offline ? node : NULL, |
48a09a8f DDM |
3647 | }; |
3648 | struct crypt_params_reencrypt reencrypt_params = { | |
3649 | .mode = CRYPT_REENCRYPT_ENCRYPT, | |
3650 | .direction = CRYPT_REENCRYPT_BACKWARD, | |
3651 | .resilience = "datashift", | |
3652 | .data_shift = LUKS2_METADATA_SIZE / 512, | |
3653 | .luks2 = &luks_params, | |
3654 | .flags = CRYPT_REENCRYPT_INITIALIZE_ONLY|CRYPT_REENCRYPT_MOVE_FIRST_SEGMENT, | |
3655 | }; | |
0d12936d | 3656 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
48a09a8f DDM |
3657 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; |
3658 | _cleanup_fclose_ FILE *h = NULL; | |
a09ae915 | 3659 | _cleanup_free_ char *hp = NULL, *vol = NULL, *dm_name = NULL; |
48a09a8f DDM |
3660 | const char *passphrase = NULL; |
3661 | size_t passphrase_size = 0; | |
0b75744d | 3662 | const char *vt; |
b9df3536 LP |
3663 | int r; |
3664 | ||
994b3031 | 3665 | assert(context); |
b9df3536 | 3666 | assert(p); |
889914ef LP |
3667 | assert(p->encrypt != ENCRYPT_OFF); |
3668 | ||
0d12936d LP |
3669 | r = dlopen_cryptsetup(); |
3670 | if (r < 0) | |
3671 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
3672 | ||
b9df3536 LP |
3673 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); |
3674 | ||
a09ae915 DDM |
3675 | if (offline) { |
3676 | r = var_tmp_dir(&vt); | |
3677 | if (r < 0) | |
3678 | return log_error_errno(r, "Failed to determine temporary files directory: %m"); | |
0b75744d | 3679 | |
a09ae915 DDM |
3680 | r = fopen_temporary_child(vt, &h, &hp); |
3681 | if (r < 0) | |
3682 | return log_error_errno(r, "Failed to create temporary LUKS header file: %m"); | |
48a09a8f | 3683 | |
a09ae915 DDM |
3684 | /* Weird cryptsetup requirement which requires the header file to be the size of at least one |
3685 | * sector. */ | |
93f125a6 | 3686 | r = ftruncate(fileno(h), luks_params.sector_size); |
a09ae915 DDM |
3687 | if (r < 0) |
3688 | return log_error_errno(r, "Failed to grow temporary LUKS header file: %m"); | |
3689 | } else { | |
3690 | if (asprintf(&dm_name, "luks-repart-%08" PRIx64, random_u64()) < 0) | |
3691 | return log_oom(); | |
3692 | ||
3693 | vol = path_join("/dev/mapper/", dm_name); | |
3694 | if (!vol) | |
3695 | return log_oom(); | |
3696 | } | |
48a09a8f | 3697 | |
a09ae915 | 3698 | r = sym_crypt_init(&cd, offline ? hp : node); |
48a09a8f DDM |
3699 | if (r < 0) |
3700 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", hp); | |
b9df3536 LP |
3701 | |
3702 | cryptsetup_enable_logging(cd); | |
3703 | ||
a09ae915 DDM |
3704 | if (offline) { |
3705 | /* Disable kernel keyring usage by libcryptsetup as a workaround for | |
3706 | * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/273. This makes sure that we can | |
3707 | * do offline encryption even when repart is running in a container. */ | |
3708 | r = sym_crypt_volume_key_keyring(cd, false); | |
3709 | if (r < 0) | |
3710 | return log_error_errno(r, "Failed to disable kernel keyring: %m"); | |
48a09a8f | 3711 | |
a09ae915 DDM |
3712 | r = sym_crypt_metadata_locking(cd, false); |
3713 | if (r < 0) | |
3714 | return log_error_errno(r, "Failed to disable metadata locking: %m"); | |
48a09a8f | 3715 | |
a09ae915 DDM |
3716 | r = sym_crypt_set_data_offset(cd, LUKS2_METADATA_SIZE / 512); |
3717 | if (r < 0) | |
3718 | return log_error_errno(r, "Failed to set data offset: %m"); | |
3719 | } | |
48a09a8f | 3720 | |
0d12936d | 3721 | r = sym_crypt_format(cd, |
b9df3536 LP |
3722 | CRYPT_LUKS2, |
3723 | "aes", | |
3724 | "xts-plain64", | |
15cad3a2 | 3725 | SD_ID128_TO_UUID_STRING(p->luks_uuid), |
98e0456e DDM |
3726 | NULL, |
3727 | VOLUME_KEY_SIZE, | |
48a09a8f | 3728 | &luks_params); |
b9df3536 LP |
3729 | if (r < 0) |
3730 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
3731 | ||
889914ef LP |
3732 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
3733 | r = sym_crypt_keyslot_add_by_volume_key( | |
3734 | cd, | |
3735 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3736 | NULL, |
3737 | VOLUME_KEY_SIZE, | |
889914ef LP |
3738 | strempty(arg_key), |
3739 | arg_key_size); | |
3740 | if (r < 0) | |
3741 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
48a09a8f DDM |
3742 | |
3743 | passphrase = strempty(arg_key); | |
3744 | passphrase_size = arg_key_size; | |
889914ef LP |
3745 | } |
3746 | ||
3747 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
3748 | #if HAVE_TPM2 | |
889914ef LP |
3749 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; |
3750 | _cleanup_(erase_and_freep) void *secret = NULL; | |
02ef97cd | 3751 | _cleanup_free_ void *pubkey = NULL; |
9e437994 DS |
3752 | _cleanup_free_ void *blob = NULL, *srk_buf = NULL; |
3753 | size_t secret_size, blob_size, pubkey_size = 0, srk_buf_size = 0; | |
5e476b85 | 3754 | ssize_t base64_encoded_size; |
889914ef LP |
3755 | int keyslot; |
3756 | ||
02ef97cd LP |
3757 | if (arg_tpm2_public_key_pcr_mask != 0) { |
3758 | r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey, &pubkey_size); | |
3759 | if (r < 0) { | |
3760 | if (arg_tpm2_public_key || r != -ENOENT) | |
3761 | return log_error_errno(r, "Failed read TPM PCR public key: %m"); | |
3762 | ||
3763 | log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m"); | |
3764 | arg_tpm2_public_key_pcr_mask = 0; | |
3765 | } | |
3766 | } | |
3767 | ||
9e437994 DS |
3768 | _cleanup_(tpm2_context_unrefp) Tpm2Context *tpm2_context = NULL; |
3769 | r = tpm2_context_new(arg_tpm2_device, &tpm2_context); | |
3770 | if (r < 0) | |
f9a0ee75 | 3771 | return log_error_errno(r, "Failed to create TPM2 context: %m"); |
9e437994 DS |
3772 | |
3773 | TPM2B_PUBLIC public; | |
3774 | if (pubkey) { | |
3775 | r = tpm2_tpm2b_public_from_pem(pubkey, pubkey_size, &public); | |
3776 | if (r < 0) | |
3777 | return log_error_errno(r, "Could not convert public key to TPM2B_PUBLIC: %m"); | |
3778 | } | |
3779 | ||
3780 | r = tpm2_pcr_read_missing_values(tpm2_context, arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values); | |
3781 | if (r < 0) | |
f9a0ee75 | 3782 | return log_error_errno(r, "Could not read pcr values: %m"); |
9e437994 DS |
3783 | |
3784 | uint16_t hash_pcr_bank = 0; | |
3785 | uint32_t hash_pcr_mask = 0; | |
3786 | if (arg_tpm2_n_hash_pcr_values > 0) { | |
3787 | size_t hash_count; | |
3788 | r = tpm2_pcr_values_hash_count(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values, &hash_count); | |
3789 | if (r < 0) | |
3790 | return log_error_errno(r, "Could not get hash count: %m"); | |
3791 | ||
3792 | if (hash_count > 1) | |
3793 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Multiple PCR banks selected."); | |
3794 | ||
3795 | hash_pcr_bank = arg_tpm2_hash_pcr_values[0].hash; | |
3796 | r = tpm2_pcr_values_to_mask(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values, hash_pcr_bank, &hash_pcr_mask); | |
3797 | if (r < 0) | |
3798 | return log_error_errno(r, "Could not get hash mask: %m"); | |
3799 | } | |
3800 | ||
3801 | TPM2B_DIGEST policy = TPM2B_DIGEST_MAKE(NULL, TPM2_SHA256_DIGEST_SIZE); | |
3802 | r = tpm2_calculate_sealing_policy(arg_tpm2_hash_pcr_values, arg_tpm2_n_hash_pcr_values, &public, /* use_pin= */ false, &policy); | |
3803 | if (r < 0) | |
f9a0ee75 | 3804 | return log_error_errno(r, "Could not calculate sealing policy digest: %m"); |
9e437994 DS |
3805 | |
3806 | r = tpm2_seal(tpm2_context, | |
3807 | &policy, | |
d9b5841d LP |
3808 | /* pin= */ NULL, |
3809 | &secret, &secret_size, | |
3810 | &blob, &blob_size, | |
9e437994 DS |
3811 | /* ret_primary_alg= */ NULL, |
3812 | &srk_buf, &srk_buf_size); | |
889914ef LP |
3813 | if (r < 0) |
3814 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
3815 | ||
5e476b85 LP |
3816 | base64_encoded_size = base64mem(secret, secret_size, &base64_encoded); |
3817 | if (base64_encoded_size < 0) | |
3818 | return log_error_errno(base64_encoded_size, "Failed to base64 encode secret key: %m"); | |
889914ef LP |
3819 | |
3820 | r = cryptsetup_set_minimal_pbkdf(cd); | |
3821 | if (r < 0) | |
3822 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
3823 | ||
3824 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
3825 | cd, | |
3826 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3827 | NULL, |
3828 | VOLUME_KEY_SIZE, | |
889914ef | 3829 | base64_encoded, |
5e476b85 | 3830 | base64_encoded_size); |
889914ef | 3831 | if (keyslot < 0) |
48a09a8f | 3832 | return log_error_errno(keyslot, "Failed to add new TPM2 key: %m"); |
889914ef | 3833 | |
f0f4fcae LP |
3834 | r = tpm2_make_luks2_json( |
3835 | keyslot, | |
9e437994 DS |
3836 | hash_pcr_mask, |
3837 | hash_pcr_bank, | |
02ef97cd LP |
3838 | pubkey, pubkey_size, |
3839 | arg_tpm2_public_key_pcr_mask, | |
9e437994 | 3840 | /* primary_alg= */ 0, |
f0f4fcae | 3841 | blob, blob_size, |
9e437994 | 3842 | policy.buffer, policy.size, |
aae6eb96 | 3843 | NULL, 0, /* no salt because tpm2_seal has no pin */ |
acbb504e | 3844 | srk_buf, srk_buf_size, |
f0f4fcae LP |
3845 | 0, |
3846 | &v); | |
889914ef LP |
3847 | if (r < 0) |
3848 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
3849 | ||
3850 | r = cryptsetup_add_token_json(cd, v); | |
3851 | if (r < 0) | |
3852 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
48a09a8f DDM |
3853 | |
3854 | passphrase = base64_encoded; | |
3855 | passphrase_size = strlen(base64_encoded); | |
889914ef LP |
3856 | #else |
3857 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3858 | "Support for TPM2 enrollment not enabled."); | |
3859 | #endif | |
3860 | } | |
b9df3536 | 3861 | |
a09ae915 DDM |
3862 | if (offline) { |
3863 | r = sym_crypt_reencrypt_init_by_passphrase( | |
3864 | cd, | |
3865 | NULL, | |
3866 | passphrase, | |
3867 | passphrase_size, | |
3868 | CRYPT_ANY_SLOT, | |
3869 | 0, | |
3870 | sym_crypt_get_cipher(cd), | |
3871 | sym_crypt_get_cipher_mode(cd), | |
3872 | &reencrypt_params); | |
3873 | if (r < 0) | |
3874 | return log_error_errno(r, "Failed to prepare for reencryption: %m"); | |
b9df3536 | 3875 | |
a09ae915 DDM |
3876 | /* crypt_reencrypt_init_by_passphrase() doesn't actually put the LUKS header at the front, we |
3877 | * have to do that ourselves. */ | |
b9df3536 | 3878 | |
a09ae915 DDM |
3879 | sym_crypt_free(cd); |
3880 | cd = NULL; | |
b9df3536 | 3881 | |
a09ae915 DDM |
3882 | r = sym_crypt_init(&cd, node); |
3883 | if (r < 0) | |
3884 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); | |
b9df3536 | 3885 | |
a09ae915 DDM |
3886 | r = sym_crypt_header_restore(cd, CRYPT_LUKS2, hp); |
3887 | if (r < 0) | |
3888 | return log_error_errno(r, "Failed to place new LUKS header at head of %s: %m", node); | |
b9df3536 | 3889 | |
a09ae915 | 3890 | reencrypt_params.flags &= ~CRYPT_REENCRYPT_INITIALIZE_ONLY; |
b9df3536 | 3891 | |
a09ae915 DDM |
3892 | r = sym_crypt_reencrypt_init_by_passphrase( |
3893 | cd, | |
3894 | NULL, | |
3895 | passphrase, | |
3896 | passphrase_size, | |
3897 | CRYPT_ANY_SLOT, | |
3898 | 0, | |
3899 | NULL, | |
3900 | NULL, | |
3901 | &reencrypt_params); | |
3902 | if (r < 0) | |
3903 | return log_error_errno(r, "Failed to load reencryption context: %m"); | |
b9df3536 | 3904 | |
a09ae915 DDM |
3905 | r = sym_crypt_reencrypt(cd, NULL); |
3906 | if (r < 0) | |
3907 | return log_error_errno(r, "Failed to encrypt %s: %m", node); | |
3908 | } else { | |
3909 | _cleanup_free_ DecryptedPartitionTarget *t = NULL; | |
3910 | _cleanup_close_ int dev_fd = -1; | |
3911 | ||
3912 | r = sym_crypt_activate_by_volume_key( | |
3913 | cd, | |
3914 | dm_name, | |
3915 | NULL, | |
3916 | VOLUME_KEY_SIZE, | |
3917 | arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0); | |
3918 | if (r < 0) | |
3919 | return log_error_errno(r, "Failed to activate LUKS superblock: %m"); | |
3920 | ||
3921 | dev_fd = open(vol, O_RDWR|O_CLOEXEC|O_NOCTTY); | |
3922 | if (dev_fd < 0) | |
3923 | return log_error_errno(errno, "Failed to open LUKS volume '%s': %m", vol); | |
3924 | ||
3925 | if (flock(dev_fd, LOCK_EX) < 0) | |
3926 | return log_error_errno(errno, "Failed to lock '%s': %m", vol); | |
3927 | ||
3928 | t = new(DecryptedPartitionTarget, 1); | |
3929 | if (!t) | |
3930 | return log_oom(); | |
3931 | ||
3932 | *t = (DecryptedPartitionTarget) { | |
3933 | .fd = TAKE_FD(dev_fd), | |
fd9b68d9 | 3934 | .dm_name = TAKE_PTR(dm_name), |
a09ae915 DDM |
3935 | .volume = TAKE_PTR(vol), |
3936 | .device = TAKE_PTR(cd), | |
3937 | }; | |
3938 | ||
3939 | target->decrypted = TAKE_PTR(t); | |
3940 | } | |
48a09a8f DDM |
3941 | |
3942 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
b9df3536 | 3943 | |
3dd8ae5c | 3944 | return 0; |
48a09a8f DDM |
3945 | #else |
3946 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3947 | "libcryptsetup is not supported or is missing required symbols, cannot encrypt: %m"); | |
3dd8ae5c | 3948 | #endif |
b9df3536 LP |
3949 | } |
3950 | ||
2b392d86 DDM |
3951 | static int partition_format_verity_hash( |
3952 | Context *context, | |
3953 | Partition *p, | |
13bde177 | 3954 | const char *node, |
2b392d86 DDM |
3955 | const char *data_node) { |
3956 | ||
3957 | #if HAVE_LIBCRYPTSETUP | |
3958 | Partition *dp; | |
a64769d6 | 3959 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
2b392d86 | 3960 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
cf18d96f | 3961 | _cleanup_free_ char *hint = NULL; |
2b392d86 DDM |
3962 | _cleanup_free_ uint8_t *rh = NULL; |
3963 | size_t rhs; | |
a64769d6 | 3964 | int r; |
2b392d86 DDM |
3965 | |
3966 | assert(context); | |
3967 | assert(p); | |
deeae10e | 3968 | assert(p->verity == VERITY_HASH); |
2b392d86 DDM |
3969 | assert(data_node); |
3970 | ||
3971 | if (p->dropped) | |
3972 | return 0; | |
3973 | ||
3974 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3975 | return 0; | |
3976 | ||
5eef7047 DDM |
3977 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
3978 | if (p->copy_blocks_fd >= 0) | |
3979 | return 0; | |
3980 | ||
2b392d86 DDM |
3981 | assert_se(dp = p->siblings[VERITY_DATA]); |
3982 | assert(!dp->dropped); | |
3983 | ||
cf18d96f DDM |
3984 | (void) partition_hint(p, node, &hint); |
3985 | ||
2b392d86 DDM |
3986 | r = dlopen_cryptsetup(); |
3987 | if (r < 0) | |
3988 | return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m"); | |
3989 | ||
13bde177 DDM |
3990 | if (!node) { |
3991 | r = partition_target_prepare(context, p, p->new_size, /*need_path=*/ true, &t); | |
3992 | if (r < 0) | |
3993 | return r; | |
2b392d86 | 3994 | |
13bde177 DDM |
3995 | node = partition_target_path(t); |
3996 | } | |
3997 | ||
c380047b MC |
3998 | if (p->verity_data_block_size == UINT64_MAX) |
3999 | p->verity_data_block_size = context->fs_sector_size; | |
4000 | if (p->verity_hash_block_size == UINT64_MAX) | |
4001 | p->verity_hash_block_size = context->fs_sector_size; | |
4002 | ||
13bde177 | 4003 | r = sym_crypt_init(&cd, node); |
2b392d86 | 4004 | if (r < 0) |
cf18d96f | 4005 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); |
2b392d86 | 4006 | |
e21be797 DDM |
4007 | cryptsetup_enable_logging(cd); |
4008 | ||
2b392d86 | 4009 | r = sym_crypt_format( |
81e04781 | 4010 | cd, CRYPT_VERITY, NULL, NULL, SD_ID128_TO_UUID_STRING(p->verity_uuid), NULL, 0, |
2b392d86 DDM |
4011 | &(struct crypt_params_verity){ |
4012 | .data_device = data_node, | |
4013 | .flags = CRYPT_VERITY_CREATE_HASH, | |
4014 | .hash_name = "sha256", | |
4015 | .hash_type = 1, | |
c380047b MC |
4016 | .data_block_size = p->verity_data_block_size, |
4017 | .hash_block_size = p->verity_hash_block_size, | |
81e04781 VH |
4018 | .salt_size = sizeof(p->verity_salt), |
4019 | .salt = (const char*)p->verity_salt, | |
2b392d86 | 4020 | }); |
e21be797 DDM |
4021 | if (r < 0) { |
4022 | /* libcryptsetup reports non-descriptive EIO errors for every I/O failure. Luckily, it | |
4023 | * doesn't clobber errno so let's check for ENOSPC so we can report a better error if the | |
4024 | * partition is too small. */ | |
4025 | if (r == -EIO && errno == ENOSPC) | |
4026 | return log_error_errno(errno, | |
cf18d96f DDM |
4027 | "Verity hash data does not fit in partition %s with size %s", |
4028 | strna(hint), FORMAT_BYTES(p->new_size)); | |
e21be797 | 4029 | |
cf18d96f | 4030 | return log_error_errno(r, "Failed to setup verity hash data of partition %s: %m", strna(hint)); |
e21be797 | 4031 | } |
2b392d86 | 4032 | |
13bde177 DDM |
4033 | if (t) { |
4034 | r = partition_target_sync(context, p, t); | |
4035 | if (r < 0) | |
4036 | return r; | |
4037 | } | |
a64769d6 | 4038 | |
2b392d86 DDM |
4039 | r = sym_crypt_get_volume_key_size(cd); |
4040 | if (r < 0) | |
cf18d96f | 4041 | return log_error_errno(r, "Failed to determine verity root hash size of partition %s: %m", strna(hint)); |
2b392d86 DDM |
4042 | rhs = (size_t) r; |
4043 | ||
4044 | rh = malloc(rhs); | |
4045 | if (!rh) | |
4046 | return log_oom(); | |
4047 | ||
4048 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh, &rhs, NULL, 0); | |
4049 | if (r < 0) | |
cf18d96f | 4050 | return log_error_errno(r, "Failed to get verity root hash of partition %s: %m", strna(hint)); |
2b392d86 DDM |
4051 | |
4052 | assert(rhs >= sizeof(sd_id128_t) * 2); | |
4053 | ||
4054 | if (!dp->new_uuid_is_set) { | |
4055 | memcpy_safe(dp->new_uuid.bytes, rh, sizeof(sd_id128_t)); | |
4056 | dp->new_uuid_is_set = true; | |
4057 | } | |
4058 | ||
4059 | if (!p->new_uuid_is_set) { | |
4060 | memcpy_safe(p->new_uuid.bytes, rh + rhs - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
4061 | p->new_uuid_is_set = true; | |
4062 | } | |
4063 | ||
4064 | p->roothash = TAKE_PTR(rh); | |
4065 | p->roothash_size = rhs; | |
4066 | ||
4067 | return 0; | |
4068 | #else | |
4069 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes: %m"); | |
4070 | #endif | |
4071 | } | |
4072 | ||
4ecd39c5 DDM |
4073 | static int sign_verity_roothash( |
4074 | const uint8_t *roothash, | |
4075 | size_t roothash_size, | |
4076 | uint8_t **ret_signature, | |
4077 | size_t *ret_signature_size) { | |
4078 | ||
4079 | #if HAVE_OPENSSL | |
4080 | _cleanup_(BIO_freep) BIO *rb = NULL; | |
4081 | _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL; | |
4082 | _cleanup_free_ char *hex = NULL; | |
4083 | _cleanup_free_ uint8_t *sig = NULL; | |
4084 | int sigsz; | |
4085 | ||
4086 | assert(roothash); | |
4087 | assert(roothash_size > 0); | |
4088 | assert(ret_signature); | |
4089 | assert(ret_signature_size); | |
4090 | ||
4091 | hex = hexmem(roothash, roothash_size); | |
4092 | if (!hex) | |
4093 | return log_oom(); | |
4094 | ||
4095 | rb = BIO_new_mem_buf(hex, -1); | |
4096 | if (!rb) | |
4097 | return log_oom(); | |
4098 | ||
4099 | p7 = PKCS7_sign(arg_certificate, arg_private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY); | |
4100 | if (!p7) | |
4101 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s", | |
4102 | ERR_error_string(ERR_get_error(), NULL)); | |
4103 | ||
4104 | sigsz = i2d_PKCS7(p7, &sig); | |
4105 | if (sigsz < 0) | |
4106 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s", | |
4107 | ERR_error_string(ERR_get_error(), NULL)); | |
4108 | ||
4109 | *ret_signature = TAKE_PTR(sig); | |
4110 | *ret_signature_size = sigsz; | |
4111 | ||
4112 | return 0; | |
4113 | #else | |
4114 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot setup verity signature: %m"); | |
4115 | #endif | |
4116 | } | |
4117 | ||
4118 | static int partition_format_verity_sig(Context *context, Partition *p) { | |
4119 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
4120 | _cleanup_free_ uint8_t *sig = NULL; | |
cf18d96f | 4121 | _cleanup_free_ char *text = NULL, *hint = NULL; |
4ecd39c5 DDM |
4122 | Partition *hp; |
4123 | uint8_t fp[X509_FINGERPRINT_SIZE]; | |
d28c6ce6 | 4124 | size_t sigsz = 0; /* avoid false maybe-uninitialized warning */ |
4ecd39c5 DDM |
4125 | int whole_fd, r; |
4126 | ||
4127 | assert(p->verity == VERITY_SIG); | |
4128 | ||
4129 | if (p->dropped) | |
4130 | return 0; | |
4131 | ||
4132 | if (PARTITION_EXISTS(p)) | |
4133 | return 0; | |
4134 | ||
cf18d96f DDM |
4135 | (void) partition_hint(p, context->node, &hint); |
4136 | ||
4ecd39c5 DDM |
4137 | assert_se(hp = p->siblings[VERITY_HASH]); |
4138 | assert(!hp->dropped); | |
4139 | ||
4140 | assert(arg_certificate); | |
4141 | ||
4142 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
4143 | ||
4144 | r = sign_verity_roothash(hp->roothash, hp->roothash_size, &sig, &sigsz); | |
4145 | if (r < 0) | |
4146 | return r; | |
4147 | ||
4148 | r = x509_fingerprint(arg_certificate, fp); | |
4149 | if (r < 0) | |
4150 | return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m"); | |
4151 | ||
4152 | r = json_build(&v, | |
4153 | JSON_BUILD_OBJECT( | |
4154 | JSON_BUILD_PAIR("rootHash", JSON_BUILD_HEX(hp->roothash, hp->roothash_size)), | |
4155 | JSON_BUILD_PAIR( | |
4156 | "certificateFingerprint", | |
4157 | JSON_BUILD_HEX(fp, sizeof(fp)) | |
4158 | ), | |
4159 | JSON_BUILD_PAIR("signature", JSON_BUILD_BASE64(sig, sigsz)) | |
4160 | ) | |
4161 | ); | |
4162 | if (r < 0) | |
cf18d96f | 4163 | return log_error_errno(r, "Failed to build verity signature JSON object: %m"); |
4ecd39c5 DDM |
4164 | |
4165 | r = json_variant_format(v, 0, &text); | |
4166 | if (r < 0) | |
cf18d96f | 4167 | return log_error_errno(r, "Failed to format verity signature JSON object: %m"); |
4ecd39c5 | 4168 | |
3510df0a LP |
4169 | if (strlen(text)+1 > p->new_size) |
4170 | return log_error_errno(SYNTHETIC_ERRNO(E2BIG), "Verity signature too long for partition: %m"); | |
4171 | ||
d28c6ce6 | 4172 | r = strgrowpad0(&text, p->new_size); |
4ecd39c5 | 4173 | if (r < 0) |
d28c6ce6 | 4174 | return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(p->new_size)); |
4ecd39c5 DDM |
4175 | |
4176 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
cf18d96f | 4177 | return log_error_errno(errno, "Failed to seek to partition %s offset: %m", strna(hint)); |
4ecd39c5 | 4178 | |
e22c60a9 | 4179 | r = loop_write(whole_fd, text, p->new_size); |
4ecd39c5 | 4180 | if (r < 0) |
cf18d96f | 4181 | return log_error_errno(r, "Failed to write verity signature to partition %s: %m", strna(hint)); |
4ecd39c5 DDM |
4182 | |
4183 | if (fsync(whole_fd) < 0) | |
cf18d96f | 4184 | return log_error_errno(errno, "Failed to synchronize partition %s: %m", strna(hint)); |
4ecd39c5 DDM |
4185 | |
4186 | return 0; | |
4187 | } | |
4188 | ||
757bc2e4 | 4189 | static int context_copy_blocks(Context *context) { |
a64769d6 | 4190 | int r; |
757bc2e4 LP |
4191 | |
4192 | assert(context); | |
4193 | ||
4194 | /* Copy in file systems on the block level */ | |
4195 | ||
4196 | LIST_FOREACH(partitions, p, context->partitions) { | |
a64769d6 | 4197 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
757bc2e4 LP |
4198 | |
4199 | if (p->copy_blocks_fd < 0) | |
4200 | continue; | |
4201 | ||
4202 | if (p->dropped) | |
4203 | continue; | |
4204 | ||
4205 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
4206 | continue; | |
4207 | ||
c74d50ff | 4208 | if (partition_type_defer(&p->type)) |
81d1098b DDM |
4209 | continue; |
4210 | ||
757bc2e4 LP |
4211 | assert(p->new_size != UINT64_MAX); |
4212 | assert(p->copy_blocks_size != UINT64_MAX); | |
48a09a8f | 4213 | assert(p->new_size >= p->copy_blocks_size + (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
757bc2e4 | 4214 | |
a64769d6 DDM |
4215 | r = partition_target_prepare(context, p, p->new_size, |
4216 | /*need_path=*/ p->encrypt != ENCRYPT_OFF || p->siblings[VERITY_HASH], | |
4217 | &t); | |
4218 | if (r < 0) | |
4219 | return r; | |
757bc2e4 | 4220 | |
a09ae915 DDM |
4221 | if (p->encrypt != ENCRYPT_OFF && t->loop) { |
4222 | r = partition_encrypt(context, p, t, /* offline = */ false); | |
4223 | if (r < 0) | |
4224 | return r; | |
4225 | } | |
4226 | ||
2b59bf51 ZJS |
4227 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", |
4228 | p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno); | |
757bc2e4 | 4229 | |
1e46985a DDM |
4230 | if (p->copy_blocks_offset != UINT64_MAX && lseek(p->copy_blocks_fd, p->copy_blocks_offset, SEEK_SET) < 0) |
4231 | return log_error_errno(errno, "Failed to seek to copy blocks offset in %s: %m", p->copy_blocks_path); | |
4232 | ||
a64769d6 | 4233 | r = copy_bytes(p->copy_blocks_fd, partition_target_fd(t), p->copy_blocks_size, COPY_REFLINK); |
757bc2e4 LP |
4234 | if (r < 0) |
4235 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
4236 | ||
a09ae915 DDM |
4237 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
4238 | ||
4239 | if (p->encrypt != ENCRYPT_OFF && !t->loop) { | |
4240 | r = partition_encrypt(context, p, t, /* offline = */ true); | |
b9df3536 LP |
4241 | if (r < 0) |
4242 | return r; | |
b9df3536 LP |
4243 | } |
4244 | ||
a64769d6 DDM |
4245 | r = partition_target_sync(context, p, t); |
4246 | if (r < 0) | |
4247 | return r; | |
48a09a8f | 4248 | |
c74d50ff | 4249 | if (p->siblings[VERITY_HASH] && !partition_type_defer(&p->siblings[VERITY_HASH]->type)) { |
a64769d6 | 4250 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
13bde177 | 4251 | /* node = */ NULL, partition_target_path(t)); |
2b392d86 DDM |
4252 | if (r < 0) |
4253 | return r; | |
4254 | } | |
4ecd39c5 | 4255 | |
c74d50ff | 4256 | if (p->siblings[VERITY_SIG] && !partition_type_defer(&p->siblings[VERITY_SIG]->type)) { |
4ecd39c5 DDM |
4257 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); |
4258 | if (r < 0) | |
4259 | return r; | |
4260 | } | |
757bc2e4 LP |
4261 | } |
4262 | ||
4263 | return 0; | |
4264 | } | |
4265 | ||
e57b7020 DDM |
4266 | static int add_exclude_path(const char *path, Hashmap **denylist, DenyType type) { |
4267 | _cleanup_free_ struct stat *st = NULL; | |
4268 | int r; | |
4269 | ||
4270 | assert(path); | |
4271 | assert(denylist); | |
4272 | ||
4273 | st = new(struct stat, 1); | |
4274 | if (!st) | |
4275 | return log_oom(); | |
4276 | ||
4277 | r = chase_and_stat(path, arg_root, CHASE_PREFIX_ROOT, NULL, st); | |
4278 | if (r == -ENOENT) | |
4279 | return 0; | |
4280 | if (r < 0) | |
4281 | return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_root), path); | |
4282 | ||
4283 | r = hashmap_ensure_put(denylist, &inode_hash_ops, st, INT_TO_PTR(type)); | |
4284 | if (r == -EEXIST) | |
4285 | return 0; | |
4286 | if (r < 0) | |
4287 | return log_oom(); | |
4288 | if (r > 0) | |
4289 | TAKE_PTR(st); | |
4290 | ||
4291 | return 0; | |
4292 | } | |
4293 | ||
4294 | static int make_copy_files_denylist( | |
4295 | Context *context, | |
4296 | const Partition *p, | |
4297 | const char *source, | |
4298 | const char *target, | |
4299 | Hashmap **ret) { | |
4300 | ||
4301 | _cleanup_hashmap_free_ Hashmap *denylist = NULL; | |
4302 | int r; | |
4303 | ||
4304 | assert(context); | |
4305 | assert(p); | |
4306 | assert(source); | |
4307 | assert(target); | |
4308 | assert(ret); | |
4309 | ||
4310 | /* Always exclude the top level APIVFS and temporary directories since the contents of these | |
4311 | * directories are almost certainly not intended to end up in an image. */ | |
4312 | ||
4313 | NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) { | |
4314 | r = add_exclude_path(s, &denylist, DENY_CONTENTS); | |
4315 | if (r < 0) | |
4316 | return r; | |
4317 | } | |
4318 | ||
4319 | /* Add the user configured excludes. */ | |
4320 | ||
600bf76c | 4321 | STRV_FOREACH(e, p->exclude_files_source) { |
e57b7020 DDM |
4322 | r = add_exclude_path(*e, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE); |
4323 | if (r < 0) | |
4324 | return r; | |
4325 | } | |
4326 | ||
600bf76c DDM |
4327 | STRV_FOREACH(e, p->exclude_files_target) { |
4328 | _cleanup_free_ char *path = NULL; | |
4329 | ||
4330 | const char *s = path_startswith(*e, target); | |
4331 | if (!s) | |
4332 | continue; | |
4333 | ||
4334 | path = path_join(source, s); | |
4335 | if (!path) | |
4336 | return log_oom(); | |
4337 | ||
4338 | r = add_exclude_path(path, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE); | |
4339 | if (r < 0) | |
4340 | return r; | |
4341 | } | |
4342 | ||
e57b7020 DDM |
4343 | /* If we're populating a root partition, we don't want any files to end up under the APIVFS mount |
4344 | * points. While we already exclude <source>/proc, users could still do something such as | |
4345 | * "CopyFiles=/abc:/". Now, if /abc has a proc subdirectory with files in it, those will end up in | |
4346 | * the top level proc directory in the root partition, which we want to avoid. To deal with these | |
4347 | * cases, whenever we're populating a root partition and the target of CopyFiles= is the root | |
4348 | * directory of the root partition, we exclude all directories under the source that are named after | |
4349 | * APIVFS directories or named after mount points of other partitions that are also going to be part | |
4350 | * of the image. */ | |
4351 | ||
4352 | if (p->type.designator == PARTITION_ROOT && empty_or_root(target)) { | |
4353 | LIST_FOREACH(partitions, q, context->partitions) { | |
4354 | if (q->type.designator == PARTITION_ROOT) | |
4355 | continue; | |
4356 | ||
4357 | const char *sources = gpt_partition_type_mountpoint_nulstr(q->type); | |
4358 | if (!sources) | |
4359 | continue; | |
4360 | ||
4361 | NULSTR_FOREACH(s, sources) { | |
4362 | _cleanup_free_ char *path = NULL; | |
4363 | ||
4364 | /* Exclude only the children of partition mount points so that the nested | |
4365 | * partition mount point itself still ends up in the upper partition. */ | |
4366 | ||
4367 | path = path_join(source, s); | |
4368 | if (!path) | |
4369 | return -ENOMEM; | |
4370 | ||
4371 | r = add_exclude_path(path, &denylist, DENY_CONTENTS); | |
4372 | if (r < 0) | |
4373 | return r; | |
4374 | } | |
4375 | } | |
4376 | ||
4377 | NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) { | |
4378 | _cleanup_free_ char *path = NULL; | |
4379 | ||
4380 | path = path_join(source, s); | |
4381 | if (!path) | |
4382 | return -ENOMEM; | |
4383 | ||
4384 | r = add_exclude_path(path, &denylist, DENY_CONTENTS); | |
4385 | if (r < 0) | |
4386 | return r; | |
4387 | } | |
4388 | } | |
4389 | ||
4390 | *ret = TAKE_PTR(denylist); | |
4391 | return 0; | |
4392 | } | |
4393 | ||
440f805c DDM |
4394 | static int add_subvolume_path(const char *path, Set **subvolumes) { |
4395 | _cleanup_free_ struct stat *st = NULL; | |
4396 | int r; | |
4397 | ||
4398 | assert(path); | |
4399 | assert(subvolumes); | |
4400 | ||
4401 | st = new(struct stat, 1); | |
4402 | if (!st) | |
4403 | return log_oom(); | |
4404 | ||
4405 | r = chase_and_stat(path, arg_root, CHASE_PREFIX_ROOT, NULL, st); | |
4406 | if (r == -ENOENT) | |
4407 | return 0; | |
4408 | if (r < 0) | |
4409 | return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_root), path); | |
4410 | ||
fc159b2f | 4411 | r = set_ensure_consume(subvolumes, &inode_hash_ops, TAKE_PTR(st)); |
440f805c DDM |
4412 | if (r < 0) |
4413 | return log_oom(); | |
440f805c DDM |
4414 | |
4415 | return 0; | |
4416 | } | |
4417 | ||
4418 | static int make_subvolumes_set( | |
4419 | Context *context, | |
4420 | const Partition *p, | |
4421 | const char *source, | |
4422 | const char *target, | |
4423 | Set **ret) { | |
4424 | _cleanup_set_free_ Set *subvolumes = NULL; | |
4425 | int r; | |
4426 | ||
4427 | assert(context); | |
4428 | assert(p); | |
4429 | assert(target); | |
4430 | assert(ret); | |
4431 | ||
4432 | STRV_FOREACH(subvolume, p->subvolumes) { | |
4433 | _cleanup_free_ char *path = NULL; | |
4434 | ||
4435 | const char *s = path_startswith(*subvolume, target); | |
4436 | if (!s) | |
4437 | continue; | |
4438 | ||
4439 | path = path_join(source, s); | |
4440 | if (!path) | |
4441 | return log_oom(); | |
4442 | ||
4443 | r = add_subvolume_path(path, &subvolumes); | |
4444 | if (r < 0) | |
4445 | return r; | |
4446 | } | |
4447 | ||
4448 | *ret = TAKE_PTR(subvolumes); | |
4449 | return 0; | |
4450 | } | |
4451 | ||
e57b7020 | 4452 | static int do_copy_files(Context *context, Partition *p, const char *root) { |
8a794850 LP |
4453 | int r; |
4454 | ||
4455 | assert(p); | |
92cd7e7c | 4456 | assert(root); |
8a794850 | 4457 | |
3e451460 DDM |
4458 | /* copy_tree_at() automatically copies the permissions of source directories to target directories if |
4459 | * it created them. However, the root directory is created by us, so we have to manually take care | |
4460 | * that it is initialized. We use the first source directory targeting "/" as the metadata source for | |
4461 | * the root directory. */ | |
4462 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
4463 | _cleanup_close_ int rfd = -EBADF, sfd = -EBADF; | |
4464 | ||
4465 | if (!path_equal(*target, "/")) | |
4466 | continue; | |
4467 | ||
4468 | rfd = open(root, O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
4469 | if (rfd < 0) | |
4470 | return rfd; | |
4471 | ||
f461a28d | 4472 | sfd = chase_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_PATH|O_DIRECTORY|O_CLOEXEC|O_NOCTTY, NULL); |
3e451460 DDM |
4473 | if (sfd < 0) |
4474 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
4475 | ||
4476 | (void) copy_xattr(sfd, NULL, rfd, NULL, COPY_ALL_XATTRS); | |
4477 | (void) copy_access(sfd, rfd); | |
4478 | (void) copy_times(sfd, rfd, 0); | |
4479 | ||
4480 | break; | |
4481 | } | |
4482 | ||
8a794850 | 4483 | STRV_FOREACH_PAIR(source, target, p->copy_files) { |
e57b7020 | 4484 | _cleanup_hashmap_free_ Hashmap *denylist = NULL; |
440f805c | 4485 | _cleanup_set_free_ Set *subvolumes_by_source_inode = NULL; |
254d1313 | 4486 | _cleanup_close_ int sfd = -EBADF, pfd = -EBADF, tfd = -EBADF; |
8a794850 | 4487 | |
e57b7020 DDM |
4488 | r = make_copy_files_denylist(context, p, *source, *target, &denylist); |
4489 | if (r < 0) | |
4490 | return r; | |
4491 | ||
440f805c DDM |
4492 | r = make_subvolumes_set(context, p, *source, *target, &subvolumes_by_source_inode); |
4493 | if (r < 0) | |
4494 | return r; | |
4495 | ||
f461a28d | 4496 | sfd = chase_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL); |
8a794850 LP |
4497 | if (sfd < 0) |
4498 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
4499 | ||
4500 | r = fd_verify_regular(sfd); | |
4501 | if (r < 0) { | |
4502 | if (r != -EISDIR) | |
4503 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
4504 | ||
4505 | /* We are looking at a directory */ | |
f461a28d | 4506 | tfd = chase_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 4507 | if (tfd < 0) { |
f21a3a82 LP |
4508 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
4509 | ||
8a794850 LP |
4510 | if (tfd != -ENOENT) |
4511 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
4512 | ||
f21a3a82 LP |
4513 | r = path_extract_filename(*target, &fn); |
4514 | if (r < 0) | |
4515 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
4516 | ||
4517 | r = path_extract_directory(*target, &dn); | |
4518 | if (r < 0) | |
4519 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
4520 | ||
440f805c | 4521 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755, p->subvolumes); |
8a794850 LP |
4522 | if (r < 0) |
4523 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
4524 | ||
f461a28d | 4525 | pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 LP |
4526 | if (pfd < 0) |
4527 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
4528 | ||
652d9040 LP |
4529 | r = copy_tree_at( |
4530 | sfd, ".", | |
6020d00d | 4531 | pfd, fn, |
ff1b55ff | 4532 | UID_INVALID, GID_INVALID, |
ab645e0a | 4533 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE, |
440f805c | 4534 | denylist, subvolumes_by_source_inode); |
8a794850 | 4535 | } else |
652d9040 LP |
4536 | r = copy_tree_at( |
4537 | sfd, ".", | |
4538 | tfd, ".", | |
ff1b55ff | 4539 | UID_INVALID, GID_INVALID, |
ab645e0a | 4540 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE, |
440f805c | 4541 | denylist, subvolumes_by_source_inode); |
8a794850 | 4542 | if (r < 0) |
cf2ed23c DDM |
4543 | return log_error_errno(r, "Failed to copy '%s%s' to '%s%s': %m", |
4544 | strempty(arg_root), *source, strempty(root), *target); | |
8a794850 | 4545 | } else { |
f21a3a82 LP |
4546 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
4547 | ||
8a794850 LP |
4548 | /* We are looking at a regular file */ |
4549 | ||
f21a3a82 LP |
4550 | r = path_extract_filename(*target, &fn); |
4551 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
4552 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
4553 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
4554 | if (r < 0) | |
4555 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
4556 | ||
4557 | r = path_extract_directory(*target, &dn); | |
4558 | if (r < 0) | |
4559 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
4560 | ||
440f805c | 4561 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755, p->subvolumes); |
8a794850 LP |
4562 | if (r < 0) |
4563 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
4564 | ||
f461a28d | 4565 | pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 4566 | if (pfd < 0) |
a0ff9971 | 4567 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 4568 | |
e2819067 | 4569 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
4570 | if (tfd < 0) |
4571 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
4572 | ||
ab645e0a | 4573 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_SIGINT|COPY_TRUNCATE); |
8a794850 | 4574 | if (r < 0) |
554a2b64 | 4575 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 4576 | |
c17cfe6e | 4577 | (void) copy_xattr(sfd, NULL, tfd, NULL, COPY_ALL_XATTRS); |
8a794850 LP |
4578 | (void) copy_access(sfd, tfd); |
4579 | (void) copy_times(sfd, tfd, 0); | |
4580 | } | |
4581 | } | |
4582 | ||
4583 | return 0; | |
4584 | } | |
4585 | ||
49fb6e97 | 4586 | static int do_make_directories(Partition *p, const char *root) { |
d83d8048 LP |
4587 | int r; |
4588 | ||
4589 | assert(p); | |
92cd7e7c | 4590 | assert(root); |
d83d8048 LP |
4591 | |
4592 | STRV_FOREACH(d, p->make_directories) { | |
440f805c | 4593 | r = mkdir_p_root(root, *d, UID_INVALID, GID_INVALID, 0755, p->subvolumes); |
d83d8048 LP |
4594 | if (r < 0) |
4595 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
4596 | } | |
4597 | ||
4598 | return 0; | |
4599 | } | |
4600 | ||
d3201eb4 DDM |
4601 | static bool partition_needs_populate(Partition *p) { |
4602 | assert(p); | |
4603 | return !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories); | |
4604 | } | |
4605 | ||
e57b7020 | 4606 | static int partition_populate_directory(Context *context, Partition *p, char **ret) { |
95bfd3cd | 4607 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
1eb86ddd | 4608 | const char *vt; |
95bfd3cd DDM |
4609 | int r; |
4610 | ||
e59678b2 | 4611 | assert(ret); |
95bfd3cd | 4612 | |
b24bfd6e DDM |
4613 | log_info("Populating %s filesystem.", p->format); |
4614 | ||
1eb86ddd DDM |
4615 | r = var_tmp_dir(&vt); |
4616 | if (r < 0) | |
4617 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
95bfd3cd | 4618 | |
1eb86ddd DDM |
4619 | r = tempfn_random_child(vt, "repart", &root); |
4620 | if (r < 0) | |
4621 | return log_error_errno(r, "Failed to generate temporary directory: %m"); | |
4622 | ||
4623 | r = mkdir(root, 0755); | |
4624 | if (r < 0) | |
4625 | return log_error_errno(errno, "Failed to create temporary directory: %m"); | |
0b34f351 | 4626 | |
e57b7020 | 4627 | r = do_copy_files(context, p, root); |
95bfd3cd DDM |
4628 | if (r < 0) |
4629 | return r; | |
4630 | ||
49fb6e97 | 4631 | r = do_make_directories(p, root); |
95bfd3cd DDM |
4632 | if (r < 0) |
4633 | return r; | |
4634 | ||
b24bfd6e DDM |
4635 | log_info("Successfully populated %s filesystem.", p->format); |
4636 | ||
e59678b2 | 4637 | *ret = TAKE_PTR(root); |
95bfd3cd DDM |
4638 | return 0; |
4639 | } | |
4640 | ||
e57b7020 | 4641 | static int partition_populate_filesystem(Context *context, Partition *p, const char *node) { |
8a794850 LP |
4642 | int r; |
4643 | ||
4644 | assert(p); | |
4645 | assert(node); | |
4646 | ||
b24bfd6e | 4647 | log_info("Populating %s filesystem.", p->format); |
8a794850 LP |
4648 | |
4649 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
4650 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
4651 | * detached mount propagation. */ | |
4652 | ||
4653 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
4654 | if (r < 0) | |
4655 | return r; | |
4656 | if (r == 0) { | |
4657 | static const char fs[] = "/run/systemd/mount-root"; | |
4658 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
4659 | ||
4660 | r = mkdir_p(fs, 0700); | |
4661 | if (r < 0) { | |
4662 | log_error_errno(r, "Failed to create mount point: %m"); | |
4663 | _exit(EXIT_FAILURE); | |
4664 | } | |
4665 | ||
511a8cfe | 4666 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
4667 | _exit(EXIT_FAILURE); |
4668 | ||
e57b7020 | 4669 | if (do_copy_files(context, p, fs) < 0) |
8a794850 LP |
4670 | _exit(EXIT_FAILURE); |
4671 | ||
49fb6e97 | 4672 | if (do_make_directories(p, fs) < 0) |
d83d8048 LP |
4673 | _exit(EXIT_FAILURE); |
4674 | ||
8a794850 LP |
4675 | r = syncfs_path(AT_FDCWD, fs); |
4676 | if (r < 0) { | |
4677 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
4678 | _exit(EXIT_FAILURE); | |
4679 | } | |
4680 | ||
4681 | _exit(EXIT_SUCCESS); | |
4682 | } | |
4683 | ||
b24bfd6e | 4684 | log_info("Successfully populated %s filesystem.", p->format); |
8a794850 LP |
4685 | return 0; |
4686 | } | |
4687 | ||
53171c04 | 4688 | static int context_mkfs(Context *context) { |
a64769d6 | 4689 | int r; |
53171c04 LP |
4690 | |
4691 | assert(context); | |
4692 | ||
4693 | /* Make a file system */ | |
4694 | ||
4695 | LIST_FOREACH(partitions, p, context->partitions) { | |
e59678b2 | 4696 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
a64769d6 | 4697 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
4b8ce14f | 4698 | _cleanup_strv_free_ char **extra_mkfs_options = NULL; |
53171c04 LP |
4699 | |
4700 | if (p->dropped) | |
4701 | continue; | |
4702 | ||
4703 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
4704 | continue; | |
4705 | ||
4706 | if (!p->format) | |
4707 | continue; | |
4708 | ||
c4a87b76 DDM |
4709 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
4710 | if (p->copy_blocks_fd >= 0) | |
4711 | continue; | |
4712 | ||
c74d50ff | 4713 | if (partition_type_defer(&p->type)) |
81d1098b DDM |
4714 | continue; |
4715 | ||
53171c04 LP |
4716 | assert(p->offset != UINT64_MAX); |
4717 | assert(p->new_size != UINT64_MAX); | |
48a09a8f | 4718 | assert(p->new_size >= (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
53171c04 | 4719 | |
a64769d6 DDM |
4720 | /* If we're doing encryption, we make sure we keep free space at the end which is required |
4721 | * for cryptsetup's offline encryption. */ | |
4722 | r = partition_target_prepare(context, p, | |
4723 | p->new_size - (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0), | |
4724 | /*need_path=*/ true, | |
4725 | &t); | |
53171c04 | 4726 | if (r < 0) |
a64769d6 | 4727 | return r; |
53171c04 | 4728 | |
a09ae915 DDM |
4729 | if (p->encrypt != ENCRYPT_OFF && t->loop) { |
4730 | r = partition_target_grow(t, p->new_size); | |
4731 | if (r < 0) | |
4732 | return r; | |
4733 | ||
4734 | r = partition_encrypt(context, p, t, /* offline = */ false); | |
4735 | if (r < 0) | |
4736 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
4737 | } | |
4738 | ||
53171c04 LP |
4739 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
4740 | ||
d3201eb4 DDM |
4741 | /* If we're not writing to a loop device or if we're populating a read-only filesystem, we |
4742 | * have to populate using the filesystem's mkfs's --root (or equivalent) option. To do that, | |
4743 | * we need to set up the final directory tree beforehand. */ | |
4744 | ||
4745 | if (partition_needs_populate(p) && (!t->loop || fstype_is_ro(p->format))) { | |
4746 | if (!mkfs_supports_root_option(p->format)) | |
4747 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
4748 | "Loop device access is required to populate %s filesystems.", | |
4749 | p->format); | |
95bfd3cd | 4750 | |
e57b7020 | 4751 | r = partition_populate_directory(context, p, &root); |
143c3c08 DDM |
4752 | if (r < 0) |
4753 | return r; | |
4754 | } | |
95bfd3cd | 4755 | |
4b8ce14f DDM |
4756 | r = mkfs_options_from_env("REPART", p->format, &extra_mkfs_options); |
4757 | if (r < 0) | |
4758 | return log_error_errno(r, | |
4759 | "Failed to determine mkfs command line options for '%s': %m", | |
4760 | p->format); | |
4761 | ||
a64769d6 | 4762 | r = make_filesystem(partition_target_path(t), p->format, strempty(p->new_label), root, |
93f125a6 DDM |
4763 | p->fs_uuid, arg_discard, /* quiet = */ false, |
4764 | context->fs_sector_size, extra_mkfs_options); | |
48a09a8f | 4765 | if (r < 0) |
53171c04 LP |
4766 | return r; |
4767 | ||
4768 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
4769 | ||
d3201eb4 DDM |
4770 | /* If we're writing to a loop device, we can now mount the empty filesystem and populate it. */ |
4771 | if (partition_needs_populate(p) && !root) { | |
4772 | assert(t->loop); | |
4773 | ||
a09ae915 | 4774 | r = partition_populate_filesystem(context, p, partition_target_path(t)); |
48a09a8f | 4775 | if (r < 0) |
143c3c08 | 4776 | return r; |
b9df3536 LP |
4777 | } |
4778 | ||
a09ae915 | 4779 | if (p->encrypt != ENCRYPT_OFF && !t->loop) { |
a64769d6 | 4780 | r = partition_target_grow(t, p->new_size); |
b9df3536 | 4781 | if (r < 0) |
a64769d6 | 4782 | return r; |
b9df3536 | 4783 | |
a09ae915 | 4784 | r = partition_encrypt(context, p, t, /* offline = */ true); |
48a09a8f DDM |
4785 | if (r < 0) |
4786 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
b9df3536 | 4787 | } |
8a794850 | 4788 | |
48a09a8f DDM |
4789 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and |
4790 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
4791 | * the disk. */ | |
4792 | ||
a64769d6 | 4793 | r = partition_target_sync(context, p, t); |
53171c04 | 4794 | if (r < 0) |
a64769d6 | 4795 | return r; |
b5b7879a | 4796 | |
c74d50ff | 4797 | if (p->siblings[VERITY_HASH] && !partition_type_defer(&p->siblings[VERITY_HASH]->type)) { |
a64769d6 | 4798 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
13bde177 | 4799 | /* node = */ NULL, partition_target_path(t)); |
2b392d86 DDM |
4800 | if (r < 0) |
4801 | return r; | |
b5b7879a | 4802 | } |
4ecd39c5 | 4803 | |
c74d50ff | 4804 | if (p->siblings[VERITY_SIG] && !partition_type_defer(&p->siblings[VERITY_SIG]->type)) { |
4ecd39c5 DDM |
4805 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); |
4806 | if (r < 0) | |
4807 | return r; | |
4808 | } | |
b5b7879a DDM |
4809 | } |
4810 | ||
4811 | return 0; | |
4812 | } | |
4813 | ||
b456191d DDM |
4814 | static int parse_x509_certificate(const char *certificate, size_t certificate_size, X509 **ret) { |
4815 | #if HAVE_OPENSSL | |
4816 | _cleanup_(X509_freep) X509 *cert = NULL; | |
4817 | _cleanup_(BIO_freep) BIO *cb = NULL; | |
4818 | ||
4819 | assert(certificate); | |
4820 | assert(certificate_size > 0); | |
4821 | assert(ret); | |
4822 | ||
4823 | cb = BIO_new_mem_buf(certificate, certificate_size); | |
4824 | if (!cb) | |
4825 | return log_oom(); | |
4826 | ||
4827 | cert = PEM_read_bio_X509(cb, NULL, NULL, NULL); | |
4828 | if (!cert) | |
4829 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Failed to parse X.509 certificate: %s", | |
4830 | ERR_error_string(ERR_get_error(), NULL)); | |
4831 | ||
4832 | if (ret) | |
4833 | *ret = TAKE_PTR(cert); | |
4834 | ||
4835 | return 0; | |
4836 | #else | |
4837 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse X509 certificate."); | |
4838 | #endif | |
4839 | } | |
4840 | ||
4841 | static int parse_private_key(const char *key, size_t key_size, EVP_PKEY **ret) { | |
4842 | #if HAVE_OPENSSL | |
4843 | _cleanup_(BIO_freep) BIO *kb = NULL; | |
4844 | _cleanup_(EVP_PKEY_freep) EVP_PKEY *pk = NULL; | |
4845 | ||
4846 | assert(key); | |
4847 | assert(key_size > 0); | |
4848 | assert(ret); | |
4849 | ||
4850 | kb = BIO_new_mem_buf(key, key_size); | |
4851 | if (!kb) | |
4852 | return log_oom(); | |
4853 | ||
4854 | pk = PEM_read_bio_PrivateKey(kb, NULL, NULL, NULL); | |
4855 | if (!pk) | |
4856 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to parse PEM private key: %s", | |
4857 | ERR_error_string(ERR_get_error(), NULL)); | |
4858 | ||
4859 | if (ret) | |
4860 | *ret = TAKE_PTR(pk); | |
4861 | ||
4862 | return 0; | |
4863 | #else | |
4864 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse private key."); | |
4865 | #endif | |
4866 | } | |
4867 | ||
e594a3b1 LP |
4868 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
4869 | struct { | |
4870 | sd_id128_t type_uuid; | |
4871 | uint64_t counter; | |
695cfd53 | 4872 | } _packed_ plaintext = {}; |
e594a3b1 | 4873 | union { |
ade99252 | 4874 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
4875 | sd_id128_t id; |
4876 | } result; | |
4877 | ||
4878 | uint64_t k = 0; | |
e594a3b1 LP |
4879 | int r; |
4880 | ||
4881 | assert(context); | |
4882 | assert(p); | |
4883 | assert(ret); | |
4884 | ||
4885 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
4886 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
4887 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
4888 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
4889 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
4890 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
4891 | * second and later partition of the same type) if we have more than one partition of the same | |
4892 | * time. Or in other words: | |
4893 | * | |
4894 | * With: | |
4895 | * SEED := /etc/machine-id | |
4896 | * | |
4897 | * If first partition instance of type TYPE_UUID: | |
4898 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
4899 | * | |
4900 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
4901 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
4902 | */ | |
4903 | ||
4904 | LIST_FOREACH(partitions, q, context->partitions) { | |
4905 | if (p == q) | |
4906 | break; | |
4907 | ||
22e932f4 | 4908 | if (!sd_id128_equal(p->type.uuid, q->type.uuid)) |
e594a3b1 LP |
4909 | continue; |
4910 | ||
4911 | k++; | |
4912 | } | |
4913 | ||
22e932f4 | 4914 | plaintext.type_uuid = p->type.uuid; |
e594a3b1 LP |
4915 | plaintext.counter = htole64(k); |
4916 | ||
ade99252 KK |
4917 | hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes), |
4918 | &plaintext, | |
4919 | k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
4920 | result.md); | |
e594a3b1 LP |
4921 | |
4922 | /* Take the first half, mark it as v4 UUID */ | |
4923 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
4924 | result.id = id128_make_v4_uuid(result.id); | |
4925 | ||
4926 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
4927 | LIST_FOREACH(partitions, q, context->partitions) { | |
4928 | if (p == q) | |
4929 | continue; | |
4930 | ||
580f48cc | 4931 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 4932 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
4933 | |
4934 | r = sd_id128_randomize(&result.id); | |
4935 | if (r < 0) | |
4936 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
4937 | ||
4938 | break; | |
4939 | } | |
4940 | } | |
4941 | ||
4942 | *ret = result.id; | |
4943 | return 0; | |
4944 | } | |
4945 | ||
4946 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
4947 | _cleanup_free_ char *label = NULL; | |
4948 | const char *prefix; | |
4949 | unsigned k = 1; | |
4950 | ||
4951 | assert(context); | |
4952 | assert(p); | |
4953 | assert(ret); | |
4954 | ||
22e932f4 | 4955 | prefix = gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
4956 | if (!prefix) |
4957 | prefix = "linux"; | |
4958 | ||
4959 | for (;;) { | |
4960 | const char *ll = label ?: prefix; | |
4961 | bool retry = false; | |
e594a3b1 LP |
4962 | |
4963 | LIST_FOREACH(partitions, q, context->partitions) { | |
4964 | if (p == q) | |
4965 | break; | |
4966 | ||
4967 | if (streq_ptr(ll, q->current_label) || | |
4968 | streq_ptr(ll, q->new_label)) { | |
4969 | retry = true; | |
4970 | break; | |
4971 | } | |
4972 | } | |
4973 | ||
4974 | if (!retry) | |
4975 | break; | |
4976 | ||
4977 | label = mfree(label); | |
e594a3b1 LP |
4978 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
4979 | return log_oom(); | |
4980 | } | |
4981 | ||
4982 | if (!label) { | |
4983 | label = strdup(prefix); | |
4984 | if (!label) | |
4985 | return log_oom(); | |
4986 | } | |
4987 | ||
4988 | *ret = TAKE_PTR(label); | |
4989 | return 0; | |
4990 | } | |
4991 | ||
4992 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
e594a3b1 LP |
4993 | int r; |
4994 | ||
4995 | assert(context); | |
4996 | ||
4997 | LIST_FOREACH(partitions, p, context->partitions) { | |
15cad3a2 DDM |
4998 | sd_id128_t uuid; |
4999 | ||
e594a3b1 LP |
5000 | /* Never touch foreign partitions */ |
5001 | if (PARTITION_IS_FOREIGN(p)) { | |
5002 | p->new_uuid = p->current_uuid; | |
5003 | ||
5004 | if (p->current_label) { | |
78eee6ce LP |
5005 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
5006 | if (r < 0) | |
5007 | return r; | |
e594a3b1 LP |
5008 | } |
5009 | ||
5010 | continue; | |
5011 | } | |
5012 | ||
5013 | if (!sd_id128_is_null(p->current_uuid)) | |
15cad3a2 DDM |
5014 | p->new_uuid = uuid = p->current_uuid; /* Never change initialized UUIDs */ |
5015 | else if (p->new_uuid_is_set) | |
5016 | uuid = p->new_uuid; | |
5017 | else { | |
12963533 | 5018 | /* Not explicitly set by user! */ |
15cad3a2 | 5019 | r = partition_acquire_uuid(context, p, &uuid); |
e594a3b1 LP |
5020 | if (r < 0) |
5021 | return r; | |
11749b61 | 5022 | |
15cad3a2 DDM |
5023 | /* The final verity hash/data UUIDs can only be determined after formatting the |
5024 | * verity hash partition. However, we still want to use the generated partition UUID | |
5025 | * to derive other UUIDs to keep things unique and reproducible, so we always | |
5026 | * generate a UUID if none is set, but we only use it as the actual partition UUID if | |
5027 | * verity is not configured. */ | |
5028 | if (!IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) { | |
5029 | p->new_uuid = uuid; | |
5030 | p->new_uuid_is_set = true; | |
5031 | } | |
e594a3b1 LP |
5032 | } |
5033 | ||
8bbbdfd7 DDM |
5034 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", |
5035 | * keyed off the partition UUID. */ | |
15cad3a2 | 5036 | r = derive_uuid(uuid, "file-system-uuid", &p->fs_uuid); |
8bbbdfd7 DDM |
5037 | if (r < 0) |
5038 | return r; | |
5039 | ||
15cad3a2 DDM |
5040 | if (p->encrypt != ENCRYPT_OFF) { |
5041 | r = derive_uuid(uuid, "luks-uuid", &p->luks_uuid); | |
5042 | if (r < 0) | |
5043 | return r; | |
5044 | } | |
5045 | ||
81e04781 VH |
5046 | /* Derive the verity salt and verity superblock UUID from the seed to keep them reproducible */ |
5047 | if (p->verity == VERITY_HASH) { | |
5048 | derive_salt(context->seed, "verity-salt", p->verity_salt); | |
5049 | ||
5050 | r = derive_uuid(context->seed, "verity-uuid", &p->verity_uuid); | |
5051 | if (r < 0) | |
5052 | return log_error_errno(r, "Failed to acquire verity uuid: %m"); | |
5053 | } | |
5054 | ||
e594a3b1 | 5055 | if (!isempty(p->current_label)) { |
78eee6ce LP |
5056 | /* never change initialized labels */ |
5057 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
5058 | if (r < 0) | |
5059 | return r; | |
12963533 TH |
5060 | } else if (!p->new_label) { |
5061 | /* Not explicitly set by user! */ | |
5062 | ||
e594a3b1 LP |
5063 | r = partition_acquire_label(context, p, &p->new_label); |
5064 | if (r < 0) | |
5065 | return r; | |
5066 | } | |
5067 | } | |
5068 | ||
5069 | return 0; | |
5070 | } | |
5071 | ||
e73309c5 LP |
5072 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
5073 | _cleanup_free_ char *a = NULL; | |
5074 | ||
5075 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
5076 | uint64_t bit = UINT64_C(1) << i; | |
5077 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
5078 | ||
5079 | if (!FLAGS_SET(flags, bit)) | |
5080 | continue; | |
5081 | ||
5082 | xsprintf(buf, "%u", i); | |
5083 | if (!strextend_with_separator(&a, ",", buf)) | |
5084 | return -ENOMEM; | |
5085 | } | |
5086 | ||
5087 | return fdisk_partition_set_attrs(q, a); | |
5088 | } | |
5089 | ||
1c41c1dc LP |
5090 | static uint64_t partition_merge_flags(Partition *p) { |
5091 | uint64_t f; | |
5092 | ||
5093 | assert(p); | |
5094 | ||
5095 | f = p->gpt_flags; | |
5096 | ||
ff0771bf | 5097 | if (p->no_auto >= 0) { |
22e932f4 | 5098 | if (gpt_partition_type_knows_no_auto(p->type)) |
92e72028 | 5099 | SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto); |
ff0771bf | 5100 | else { |
b7416360 | 5101 | char buffer[SD_ID128_UUID_STRING_MAX]; |
ff0771bf LP |
5102 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", |
5103 | yes_no(p->no_auto), | |
22e932f4 | 5104 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
ff0771bf LP |
5105 | } |
5106 | } | |
5107 | ||
1c41c1dc | 5108 | if (p->read_only >= 0) { |
22e932f4 | 5109 | if (gpt_partition_type_knows_read_only(p->type)) |
92e72028 | 5110 | SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only); |
1c41c1dc | 5111 | else { |
b7416360 | 5112 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
5113 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", |
5114 | yes_no(p->read_only), | |
22e932f4 | 5115 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
5116 | } |
5117 | } | |
5118 | ||
5119 | if (p->growfs >= 0) { | |
22e932f4 | 5120 | if (gpt_partition_type_knows_growfs(p->type)) |
92e72028 | 5121 | SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs); |
1c41c1dc | 5122 | else { |
b7416360 | 5123 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
5124 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", |
5125 | yes_no(p->growfs), | |
22e932f4 | 5126 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
5127 | } |
5128 | } | |
5129 | ||
5130 | return f; | |
5131 | } | |
5132 | ||
f28d4f42 | 5133 | static int context_mangle_partitions(Context *context) { |
f28d4f42 | 5134 | int r; |
e594a3b1 LP |
5135 | |
5136 | assert(context); | |
5137 | ||
e594a3b1 LP |
5138 | LIST_FOREACH(partitions, p, context->partitions) { |
5139 | if (p->dropped) | |
5140 | continue; | |
5141 | ||
c74d50ff | 5142 | if (partition_type_defer(&p->type)) |
81d1098b DDM |
5143 | continue; |
5144 | ||
e594a3b1 LP |
5145 | assert(p->new_size != UINT64_MAX); |
5146 | assert(p->offset != UINT64_MAX); | |
5147 | assert(p->partno != UINT64_MAX); | |
5148 | ||
5149 | if (PARTITION_EXISTS(p)) { | |
5150 | bool changed = false; | |
5151 | ||
5152 | assert(p->current_partition); | |
5153 | ||
5154 | if (p->new_size != p->current_size) { | |
5155 | assert(p->new_size >= p->current_size); | |
994b3031 | 5156 | assert(p->new_size % context->sector_size == 0); |
e594a3b1 LP |
5157 | |
5158 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
5159 | if (r < 0) | |
5160 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
5161 | ||
994b3031 | 5162 | r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size); |
e594a3b1 LP |
5163 | if (r < 0) |
5164 | return log_error_errno(r, "Failed to grow partition: %m"); | |
5165 | ||
5166 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
5167 | changed = true; | |
5168 | } | |
5169 | ||
5170 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
b7416360 | 5171 | r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
5172 | if (r < 0) |
5173 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
5174 | ||
5175 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
5176 | changed = true; | |
5177 | } | |
5178 | ||
5179 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 5180 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
5181 | if (r < 0) |
5182 | return log_error_errno(r, "Failed to set partition label: %m"); | |
5183 | ||
5184 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
5185 | changed = true; | |
5186 | } | |
5187 | ||
5188 | if (changed) { | |
5189 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
5190 | ||
5191 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
5192 | if (r < 0) | |
5193 | return log_error_errno(r, "Failed to update partition: %m"); | |
5194 | } | |
5195 | } else { | |
5196 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
5197 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
e594a3b1 LP |
5198 | |
5199 | assert(!p->new_partition); | |
994b3031 LP |
5200 | assert(p->offset % context->sector_size == 0); |
5201 | assert(p->new_size % context->sector_size == 0); | |
be9ce018 | 5202 | assert(p->new_label); |
e594a3b1 LP |
5203 | |
5204 | t = fdisk_new_parttype(); | |
5205 | if (!t) | |
5206 | return log_oom(); | |
5207 | ||
22e932f4 | 5208 | r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type.uuid)); |
e594a3b1 LP |
5209 | if (r < 0) |
5210 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
5211 | ||
5212 | q = fdisk_new_partition(); | |
5213 | if (!q) | |
5214 | return log_oom(); | |
5215 | ||
5216 | r = fdisk_partition_set_type(q, t); | |
5217 | if (r < 0) | |
5218 | return log_error_errno(r, "Failed to set partition type: %m"); | |
5219 | ||
5220 | r = fdisk_partition_size_explicit(q, true); | |
5221 | if (r < 0) | |
5222 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
5223 | ||
994b3031 | 5224 | r = fdisk_partition_set_start(q, p->offset / context->sector_size); |
e594a3b1 LP |
5225 | if (r < 0) |
5226 | return log_error_errno(r, "Failed to position partition: %m"); | |
5227 | ||
994b3031 | 5228 | r = fdisk_partition_set_size(q, p->new_size / context->sector_size); |
e594a3b1 LP |
5229 | if (r < 0) |
5230 | return log_error_errno(r, "Failed to grow partition: %m"); | |
5231 | ||
5232 | r = fdisk_partition_set_partno(q, p->partno); | |
5233 | if (r < 0) | |
5234 | return log_error_errno(r, "Failed to set partition number: %m"); | |
5235 | ||
b7416360 | 5236 | r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
5237 | if (r < 0) |
5238 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
5239 | ||
be9ce018 | 5240 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
5241 | if (r < 0) |
5242 | return log_error_errno(r, "Failed to set partition label: %m"); | |
5243 | ||
ff0771bf | 5244 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 5245 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
5246 | if (r < 0) |
5247 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
5248 | ||
5b5109e2 | 5249 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
5250 | |
5251 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
5252 | if (r < 0) | |
5253 | return log_error_errno(r, "Failed to add partition: %m"); | |
5254 | ||
5255 | assert(!p->new_partition); | |
5256 | p->new_partition = TAKE_PTR(q); | |
5257 | } | |
5258 | } | |
5259 | ||
f28d4f42 LP |
5260 | return 0; |
5261 | } | |
5262 | ||
62108348 | 5263 | static int split_name_printf(Partition *p, char **ret) { |
4cee8333 DDM |
5264 | assert(p); |
5265 | ||
5266 | const Specifier table[] = { | |
22e932f4 DDM |
5267 | { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type.uuid) }, |
5268 | { 'T', specifier_id128, &p->type.uuid }, | |
4cee8333 DDM |
5269 | { 'U', specifier_id128, &p->new_uuid }, |
5270 | { 'n', specifier_uint64, &p->partno }, | |
5271 | ||
5272 | COMMON_SYSTEM_SPECIFIERS, | |
5273 | {} | |
5274 | }; | |
5275 | ||
62108348 | 5276 | return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, ret); |
4cee8333 DDM |
5277 | } |
5278 | ||
62108348 DDM |
5279 | static int split_node(const char *node, char **ret_base, char **ret_ext) { |
5280 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
5281 | char *e; | |
5282 | int r; | |
5283 | ||
5284 | assert(node); | |
5285 | assert(ret_base); | |
5286 | assert(ret_ext); | |
5287 | ||
5288 | r = path_extract_filename(node, &base); | |
5289 | if (r == O_DIRECTORY || r == -EADDRNOTAVAIL) | |
5290 | return log_error_errno(r, "Device node %s cannot be a directory", node); | |
5291 | if (r < 0) | |
5292 | return log_error_errno(r, "Failed to extract filename from %s: %m", node); | |
5293 | ||
5294 | e = endswith(base, ".raw"); | |
5295 | if (e) { | |
5296 | ext = strdup(e); | |
5297 | if (!ext) | |
5298 | return log_oom(); | |
5299 | ||
5300 | *e = 0; | |
5301 | } | |
5302 | ||
5303 | *ret_base = TAKE_PTR(base); | |
5304 | *ret_ext = TAKE_PTR(ext); | |
5305 | ||
5306 | return 0; | |
4cee8333 DDM |
5307 | } |
5308 | ||
5309 | static int split_name_resolve(Context *context) { | |
62108348 | 5310 | _cleanup_free_ char *parent = NULL, *base = NULL, *ext = NULL; |
4cee8333 DDM |
5311 | int r; |
5312 | ||
62108348 | 5313 | assert(context); |
62108348 | 5314 | |
cc751c75 | 5315 | r = path_extract_directory(context->node, &parent); |
62108348 | 5316 | if (r < 0 && r != -EDESTADDRREQ) |
cc751c75 | 5317 | return log_error_errno(r, "Failed to extract directory from %s: %m", context->node); |
62108348 | 5318 | |
cc751c75 | 5319 | r = split_node(context->node, &base, &ext); |
62108348 DDM |
5320 | if (r < 0) |
5321 | return r; | |
5322 | ||
4cee8333 | 5323 | LIST_FOREACH(partitions, p, context->partitions) { |
62108348 DDM |
5324 | _cleanup_free_ char *resolved = NULL; |
5325 | ||
4cee8333 DDM |
5326 | if (p->dropped) |
5327 | continue; | |
5328 | ||
5329 | if (!p->split_name_format) | |
5330 | continue; | |
5331 | ||
62108348 | 5332 | r = split_name_printf(p, &resolved); |
4cee8333 DDM |
5333 | if (r < 0) |
5334 | return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format); | |
62108348 DDM |
5335 | |
5336 | if (parent) | |
5337 | p->split_path = strjoin(parent, "/", base, ".", resolved, ext); | |
5338 | else | |
5339 | p->split_path = strjoin(base, ".", resolved, ext); | |
5340 | if (!p->split_path) | |
5341 | return log_oom(); | |
4cee8333 DDM |
5342 | } |
5343 | ||
5344 | LIST_FOREACH(partitions, p, context->partitions) { | |
62108348 | 5345 | if (!p->split_path) |
4cee8333 DDM |
5346 | continue; |
5347 | ||
5348 | LIST_FOREACH(partitions, q, context->partitions) { | |
5349 | if (p == q) | |
5350 | continue; | |
5351 | ||
62108348 | 5352 | if (!q->split_path) |
4cee8333 DDM |
5353 | continue; |
5354 | ||
62108348 | 5355 | if (!streq(p->split_path, q->split_path)) |
4cee8333 DDM |
5356 | continue; |
5357 | ||
5358 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
5359 | "%s and %s have the same resolved split name \"%s\", refusing", | |
62108348 | 5360 | p->definition_path, q->definition_path, p->split_path); |
4cee8333 DDM |
5361 | } |
5362 | } | |
5363 | ||
5364 | return 0; | |
5365 | } | |
5366 | ||
4cee8333 | 5367 | static int context_split(Context *context) { |
254d1313 | 5368 | int fd = -EBADF, r; |
4cee8333 DDM |
5369 | |
5370 | if (!arg_split) | |
5371 | return 0; | |
5372 | ||
5373 | assert(context); | |
4cee8333 DDM |
5374 | |
5375 | /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled | |
5376 | * in after they've been generated. */ | |
5377 | ||
5378 | r = split_name_resolve(context); | |
5379 | if (r < 0) | |
5380 | return r; | |
5381 | ||
4cee8333 | 5382 | LIST_FOREACH(partitions, p, context->partitions) { |
254d1313 | 5383 | _cleanup_close_ int fdt = -EBADF; |
4cee8333 DDM |
5384 | |
5385 | if (p->dropped) | |
5386 | continue; | |
5387 | ||
62108348 | 5388 | if (!p->split_path) |
4cee8333 DDM |
5389 | continue; |
5390 | ||
c74d50ff | 5391 | if (partition_type_defer(&p->type)) |
81d1098b DDM |
5392 | continue; |
5393 | ||
62108348 | 5394 | fdt = open(p->split_path, O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL, 0666); |
4cee8333 | 5395 | if (fdt < 0) |
62108348 | 5396 | return log_error_errno(fdt, "Failed to open split partition file %s: %m", p->split_path); |
4cee8333 DDM |
5397 | |
5398 | if (fd < 0) | |
5399 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
5400 | ||
5401 | if (lseek(fd, p->offset, SEEK_SET) < 0) | |
5402 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
5403 | ||
ab645e0a | 5404 | r = copy_bytes(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES|COPY_TRUNCATE); |
4cee8333 | 5405 | if (r < 0) |
62108348 | 5406 | return log_error_errno(r, "Failed to copy to split partition %s: %m", p->split_path); |
4cee8333 DDM |
5407 | } |
5408 | ||
5409 | return 0; | |
5410 | } | |
5411 | ||
cc751c75 | 5412 | static int context_write_partition_table(Context *context) { |
f28d4f42 LP |
5413 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; |
5414 | int capable, r; | |
5415 | ||
5416 | assert(context); | |
5417 | ||
cc751c75 | 5418 | if (!context->from_scratch && !context_changed(context)) { |
f28d4f42 LP |
5419 | log_info("No changes."); |
5420 | return 0; | |
5421 | } | |
5422 | ||
5423 | if (arg_dry_run) { | |
5424 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
5425 | return 0; | |
5426 | } | |
5427 | ||
5428 | log_info("Applying changes."); | |
5429 | ||
19c58989 LP |
5430 | if (context->from_scratch && arg_empty != EMPTY_CREATE) { |
5431 | /* Erase everything if we operate from scratch, except if the image was just created anyway, and thus is definitely empty. */ | |
81873a6b LP |
5432 | r = context_wipe_range(context, 0, context->total); |
5433 | if (r < 0) | |
5434 | return r; | |
5435 | ||
5436 | log_info("Wiped block device."); | |
5437 | ||
0dce448b LB |
5438 | if (arg_discard) { |
5439 | r = context_discard_range(context, 0, context->total); | |
5440 | if (r == -EOPNOTSUPP) | |
5441 | log_info("Storage does not support discard, not discarding entire block device data."); | |
5442 | else if (r < 0) | |
5443 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
5444 | else if (r > 0) | |
5445 | log_info("Discarded entire block device."); | |
5446 | } | |
f28d4f42 LP |
5447 | } |
5448 | ||
5449 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
5450 | if (r < 0) | |
5451 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
5452 | ||
5453 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
5454 | * gaps between partitions, just to be sure. */ | |
cc751c75 | 5455 | r = context_wipe_and_discard(context); |
f28d4f42 LP |
5456 | if (r < 0) |
5457 | return r; | |
5458 | ||
5459 | r = context_copy_blocks(context); | |
5460 | if (r < 0) | |
5461 | return r; | |
5462 | ||
5463 | r = context_mkfs(context); | |
5464 | if (r < 0) | |
5465 | return r; | |
5466 | ||
5467 | r = context_mangle_partitions(context); | |
5468 | if (r < 0) | |
5469 | return r; | |
5470 | ||
e594a3b1 LP |
5471 | log_info("Writing new partition table."); |
5472 | ||
5473 | r = fdisk_write_disklabel(context->fdisk_context); | |
5474 | if (r < 0) | |
5475 | return log_error_errno(r, "Failed to write partition table: %m"); | |
5476 | ||
911ba624 | 5477 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
5478 | if (capable == -ENOTBLK) |
5479 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
5480 | else if (capable < 0) | |
911ba624 | 5481 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 5482 | else if (capable > 0) { |
e594a3b1 LP |
5483 | log_info("Telling kernel to reread partition table."); |
5484 | ||
cc751c75 | 5485 | if (context->from_scratch) |
e594a3b1 LP |
5486 | r = fdisk_reread_partition_table(context->fdisk_context); |
5487 | else | |
5488 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
5489 | if (r < 0) | |
5490 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
5491 | } else | |
5492 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
5493 | ||
5494 | log_info("All done."); | |
5495 | ||
5496 | return 0; | |
5497 | } | |
5498 | ||
5499 | static int context_read_seed(Context *context, const char *root) { | |
5500 | int r; | |
5501 | ||
5502 | assert(context); | |
5503 | ||
5504 | if (!sd_id128_is_null(context->seed)) | |
5505 | return 0; | |
5506 | ||
5507 | if (!arg_randomize) { | |
5ee37b70 YW |
5508 | r = id128_get_machine(root, &context->seed); |
5509 | if (r >= 0) | |
5510 | return 0; | |
e594a3b1 | 5511 | |
5ee37b70 YW |
5512 | if (!ERRNO_IS_MACHINE_ID_UNSET(r)) |
5513 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
74e795ee | 5514 | |
5ee37b70 | 5515 | log_info("No machine ID set, using randomized partition UUIDs."); |
e594a3b1 LP |
5516 | } |
5517 | ||
5518 | r = sd_id128_randomize(&context->seed); | |
5519 | if (r < 0) | |
5520 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
5521 | ||
5522 | return 0; | |
5523 | } | |
5524 | ||
cc751c75 | 5525 | static int context_factory_reset(Context *context) { |
e594a3b1 LP |
5526 | size_t n = 0; |
5527 | int r; | |
5528 | ||
5529 | assert(context); | |
5530 | ||
5531 | if (arg_factory_reset <= 0) | |
5532 | return 0; | |
5533 | ||
cc751c75 | 5534 | if (context->from_scratch) /* Nothing to reset if we start from scratch */ |
e594a3b1 LP |
5535 | return 0; |
5536 | ||
5537 | if (arg_dry_run) { | |
5538 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
5539 | return 0; | |
5540 | } | |
5541 | ||
5542 | log_info("Applying factory reset."); | |
5543 | ||
5544 | LIST_FOREACH(partitions, p, context->partitions) { | |
5545 | ||
5546 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
5547 | continue; | |
5548 | ||
5549 | assert(p->partno != UINT64_MAX); | |
5550 | ||
5551 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
5552 | ||
5553 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
5554 | if (r < 0) | |
5555 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
5556 | ||
5557 | n++; | |
5558 | } | |
5559 | ||
5560 | if (n == 0) { | |
5561 | log_info("Factory reset requested, but no partitions to delete found."); | |
5562 | return 0; | |
5563 | } | |
5564 | ||
5565 | r = fdisk_write_disklabel(context->fdisk_context); | |
5566 | if (r < 0) | |
5567 | return log_error_errno(r, "Failed to write disk label: %m"); | |
5568 | ||
5569 | log_info("Successfully deleted %zu partitions.", n); | |
5570 | return 1; | |
5571 | } | |
5572 | ||
5573 | static int context_can_factory_reset(Context *context) { | |
e594a3b1 LP |
5574 | assert(context); |
5575 | ||
5576 | LIST_FOREACH(partitions, p, context->partitions) | |
5577 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
5578 | return true; | |
5579 | ||
5580 | return false; | |
5581 | } | |
5582 | ||
5c08da58 LP |
5583 | static int resolve_copy_blocks_auto_candidate( |
5584 | dev_t partition_devno, | |
22e932f4 | 5585 | GptPartitionType partition_type, |
5c08da58 LP |
5586 | dev_t restrict_devno, |
5587 | sd_id128_t *ret_uuid) { | |
5588 | ||
5589 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
254d1313 | 5590 | _cleanup_close_ int fd = -EBADF; |
ca822829 YW |
5591 | _cleanup_free_ char *p = NULL; |
5592 | const char *pttype, *t; | |
5c08da58 LP |
5593 | sd_id128_t pt_parsed, u; |
5594 | blkid_partition pp; | |
5595 | dev_t whole_devno; | |
5596 | blkid_partlist pl; | |
5c08da58 LP |
5597 | int r; |
5598 | ||
5599 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
5600 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
5601 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
5602 | * one of the two. */ | |
5603 | ||
5604 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
5605 | if (r < 0) | |
5606 | return log_error_errno( | |
5607 | r, | |
5608 | "Unable to determine containing block device of partition %u:%u: %m", | |
5609 | major(partition_devno), minor(partition_devno)); | |
5610 | ||
5611 | if (restrict_devno != (dev_t) -1 && | |
5612 | restrict_devno != whole_devno) | |
5613 | return log_error_errno( | |
5614 | SYNTHETIC_ERRNO(EPERM), | |
5615 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
5616 | major(partition_devno), minor(partition_devno), | |
5617 | major(restrict_devno), minor(restrict_devno)); | |
5618 | ||
ca822829 | 5619 | fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p); |
5c08da58 | 5620 | if (r < 0) |
ca822829 YW |
5621 | return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m", |
5622 | DEVNUM_FORMAT_VAL(whole_devno)); | |
5c08da58 LP |
5623 | |
5624 | b = blkid_new_probe(); | |
5625 | if (!b) | |
5626 | return log_oom(); | |
5627 | ||
5628 | errno = 0; | |
5629 | r = blkid_probe_set_device(b, fd, 0, 0); | |
5630 | if (r != 0) | |
5631 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
5632 | ||
5633 | (void) blkid_probe_enable_partitions(b, 1); | |
5634 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
5635 | ||
5636 | errno = 0; | |
5637 | r = blkid_do_safeprobe(b); | |
2e3944b8 LP |
5638 | if (r == _BLKID_SAFEPROBE_ERROR) |
5639 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
5640 | if (IN_SET(r, _BLKID_SAFEPROBE_AMBIGUOUS, _BLKID_SAFEPROBE_NOT_FOUND)) { | |
5c08da58 LP |
5641 | log_debug("Didn't find partition table on block device '%s'.", p); |
5642 | return false; | |
5643 | } | |
2e3944b8 LP |
5644 | |
5645 | assert(r == _BLKID_SAFEPROBE_FOUND); | |
5c08da58 LP |
5646 | |
5647 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
5648 | if (!streq_ptr(pttype, "gpt")) { | |
5649 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
5650 | return false; | |
5651 | } | |
5652 | ||
5653 | errno = 0; | |
5654 | pl = blkid_probe_get_partitions(b); | |
5655 | if (!pl) | |
5656 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
5c08da58 LP |
5657 | |
5658 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
5659 | if (!pp) { | |
5660 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
5661 | major(partition_devno), minor(partition_devno), p); | |
5662 | return false; | |
5663 | } | |
5664 | ||
5665 | t = blkid_partition_get_type_string(pp); | |
5666 | if (isempty(t)) { | |
5667 | log_debug("Partition %u:%u has no type on '%s'.", | |
5668 | major(partition_devno), minor(partition_devno), p); | |
5669 | return false; | |
5670 | } | |
5671 | ||
5672 | r = sd_id128_from_string(t, &pt_parsed); | |
5673 | if (r < 0) { | |
5674 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
5675 | return false; | |
5676 | } | |
5677 | ||
22e932f4 | 5678 | if (!sd_id128_equal(pt_parsed, partition_type.uuid)) { |
5c08da58 LP |
5679 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", |
5680 | major(partition_devno), minor(partition_devno), | |
22e932f4 | 5681 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type.uuid)); |
5c08da58 LP |
5682 | return false; |
5683 | } | |
5684 | ||
e3b9a5ff LP |
5685 | r = blkid_partition_get_uuid_id128(pp, &u); |
5686 | if (r == -ENXIO) { | |
5687 | log_debug_errno(r, "Partition " DEVNUM_FORMAT_STR " has no UUID.", DEVNUM_FORMAT_VAL(partition_devno)); | |
5c08da58 LP |
5688 | return false; |
5689 | } | |
5c08da58 | 5690 | if (r < 0) { |
e3b9a5ff | 5691 | log_debug_errno(r, "Failed to read partition UUID of " DEVNUM_FORMAT_STR ": %m", DEVNUM_FORMAT_VAL(partition_devno)); |
5c08da58 LP |
5692 | return false; |
5693 | } | |
5694 | ||
e3b9a5ff LP |
5695 | log_debug("Automatically found partition " DEVNUM_FORMAT_STR " of right type " SD_ID128_FORMAT_STR ".", |
5696 | DEVNUM_FORMAT_VAL(partition_devno), | |
5c08da58 LP |
5697 | SD_ID128_FORMAT_VAL(pt_parsed)); |
5698 | ||
5699 | if (ret_uuid) | |
5700 | *ret_uuid = u; | |
5701 | ||
5702 | return true; | |
5703 | } | |
5704 | ||
5705 | static int find_backing_devno( | |
5706 | const char *path, | |
5707 | const char *root, | |
5708 | dev_t *ret) { | |
5709 | ||
5710 | _cleanup_free_ char *resolved = NULL; | |
5711 | int r; | |
5712 | ||
5713 | assert(path); | |
5714 | ||
f461a28d | 5715 | r = chase(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); |
5c08da58 LP |
5716 | if (r < 0) |
5717 | return r; | |
5718 | ||
5719 | r = path_is_mount_point(resolved, NULL, 0); | |
5720 | if (r < 0) | |
5721 | return r; | |
5722 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
5723 | return -ENOENT; | |
5724 | ||
5725 | r = get_block_device(resolved, ret); | |
5726 | if (r < 0) | |
5727 | return r; | |
5728 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
5729 | return -ENOENT; | |
5730 | ||
5731 | return 0; | |
5732 | } | |
5733 | ||
5734 | static int resolve_copy_blocks_auto( | |
22e932f4 | 5735 | GptPartitionType type, |
5c08da58 LP |
5736 | const char *root, |
5737 | dev_t restrict_devno, | |
1a037ba2 | 5738 | dev_t *ret_devno, |
5c08da58 LP |
5739 | sd_id128_t *ret_uuid) { |
5740 | ||
5741 | const char *try1 = NULL, *try2 = NULL; | |
5742 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
5d2a48da | 5743 | _cleanup_closedir_ DIR *d = NULL; |
5c08da58 LP |
5744 | sd_id128_t found_uuid = SD_ID128_NULL; |
5745 | dev_t devno, found = 0; | |
5746 | int r; | |
5747 | ||
86320e62 DDM |
5748 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the |
5749 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
5750 | * and restrict block device references in the --image= case to loopback block device we set up. | |
5751 | * | |
5752 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
5753 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
5754 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
5755 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
5756 | ||
5757 | if (restrict_devno == 0) | |
5758 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5759 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
5760 | ||
5c08da58 LP |
5761 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching |
5762 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
5763 | * type matches. */ | |
5764 | ||
22e932f4 | 5765 | if (type.designator == PARTITION_ROOT) |
5c08da58 | 5766 | try1 = "/"; |
22e932f4 | 5767 | else if (type.designator == PARTITION_USR) |
5c08da58 | 5768 | try1 = "/usr/"; |
22e932f4 | 5769 | else if (type.designator == PARTITION_ROOT_VERITY) |
5c08da58 | 5770 | try1 = "/"; |
22e932f4 | 5771 | else if (type.designator == PARTITION_USR_VERITY) |
5c08da58 | 5772 | try1 = "/usr/"; |
22e932f4 | 5773 | else if (type.designator == PARTITION_ESP) { |
5c08da58 LP |
5774 | try1 = "/efi/"; |
5775 | try2 = "/boot/"; | |
22e932f4 | 5776 | } else if (type.designator == PARTITION_XBOOTLDR) |
5c08da58 LP |
5777 | try1 = "/boot/"; |
5778 | else | |
5779 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
5780 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
22e932f4 | 5781 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5782 | |
5783 | r = find_backing_devno(try1, root, &devno); | |
5784 | if (r == -ENOENT && try2) | |
5785 | r = find_backing_devno(try2, root, &devno); | |
5786 | if (r < 0) | |
5787 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
22e932f4 | 5788 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5789 | |
5790 | xsprintf_sys_block_path(p, "/slaves", devno); | |
5791 | d = opendir(p); | |
5792 | if (d) { | |
5793 | struct dirent *de; | |
5794 | ||
5795 | for (;;) { | |
5796 | _cleanup_free_ char *q = NULL, *t = NULL; | |
5797 | sd_id128_t u; | |
5798 | dev_t sl; | |
5799 | ||
5800 | errno = 0; | |
5801 | de = readdir_no_dot(d); | |
5802 | if (!de) { | |
5803 | if (errno != 0) | |
5804 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
5805 | ||
5806 | break; | |
5807 | } | |
5808 | ||
5809 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
5810 | continue; | |
5811 | ||
5812 | q = path_join(p, de->d_name, "/dev"); | |
5813 | if (!q) | |
5814 | return log_oom(); | |
5815 | ||
5816 | r = read_one_line_file(q, &t); | |
5817 | if (r < 0) | |
5818 | return log_error_errno(r, "Failed to read %s: %m", q); | |
5819 | ||
7176f06c | 5820 | r = parse_devnum(t, &sl); |
5c08da58 LP |
5821 | if (r < 0) { |
5822 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
5823 | continue; | |
5824 | } | |
5825 | if (major(sl) == 0) { | |
375ffdba | 5826 | log_debug("Device backing %s is special, ignoring.", q); |
5c08da58 LP |
5827 | continue; |
5828 | } | |
5829 | ||
22e932f4 | 5830 | r = resolve_copy_blocks_auto_candidate(sl, type, restrict_devno, &u); |
5c08da58 LP |
5831 | if (r < 0) |
5832 | return r; | |
5833 | if (r > 0) { | |
5834 | /* We found a matching one! */ | |
5835 | if (found != 0) | |
5836 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
5837 | "Multiple matching partitions found, refusing."); | |
5838 | ||
5839 | found = sl; | |
5840 | found_uuid = u; | |
5841 | } | |
5842 | } | |
5843 | } else if (errno != ENOENT) | |
5844 | return log_error_errno(errno, "Failed open %s: %m", p); | |
5845 | else { | |
22e932f4 | 5846 | r = resolve_copy_blocks_auto_candidate(devno, type, restrict_devno, &found_uuid); |
5c08da58 LP |
5847 | if (r < 0) |
5848 | return r; | |
5849 | if (r > 0) | |
5850 | found = devno; | |
5851 | } | |
5852 | ||
86320e62 DDM |
5853 | if (found == 0) |
5854 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
5855 | "Unable to automatically discover suitable partition to copy blocks from."); | |
5856 | ||
1a037ba2 YW |
5857 | if (ret_devno) |
5858 | *ret_devno = found; | |
5c08da58 LP |
5859 | |
5860 | if (ret_uuid) | |
5861 | *ret_uuid = found_uuid; | |
5862 | ||
86320e62 | 5863 | return 0; |
5c08da58 LP |
5864 | } |
5865 | ||
5866 | static int context_open_copy_block_paths( | |
5867 | Context *context, | |
5c08da58 LP |
5868 | dev_t restrict_devno) { |
5869 | ||
757bc2e4 LP |
5870 | int r; |
5871 | ||
5872 | assert(context); | |
5873 | ||
5874 | LIST_FOREACH(partitions, p, context->partitions) { | |
254d1313 | 5875 | _cleanup_close_ int source_fd = -EBADF; |
5c08da58 LP |
5876 | _cleanup_free_ char *opened = NULL; |
5877 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
5878 | uint64_t size; |
5879 | struct stat st; | |
5880 | ||
5eef7047 DDM |
5881 | if (p->copy_blocks_fd >= 0) |
5882 | continue; | |
5883 | ||
757bc2e4 LP |
5884 | assert(p->copy_blocks_size == UINT64_MAX); |
5885 | ||
5886 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
5887 | continue; | |
5888 | ||
5c08da58 | 5889 | if (p->copy_blocks_path) { |
757bc2e4 | 5890 | |
f461a28d | 5891 | 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 |
5892 | if (source_fd < 0) |
5893 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 5894 | |
5c08da58 LP |
5895 | if (fstat(source_fd, &st) < 0) |
5896 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
5897 | ||
5898 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
5899 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5900 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
5901 | ||
5902 | } else if (p->copy_blocks_auto) { | |
03f5e501 | 5903 | dev_t devno = 0; /* Fake initialization to appease gcc. */ |
5c08da58 | 5904 | |
22e932f4 | 5905 | r = resolve_copy_blocks_auto(p->type, p->copy_blocks_root, restrict_devno, &devno, &uuid); |
5c08da58 LP |
5906 | if (r < 0) |
5907 | return r; | |
03f5e501 | 5908 | assert(devno != 0); |
5c08da58 | 5909 | |
ca822829 | 5910 | source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
1a037ba2 | 5911 | if (r < 0) |
ca822829 YW |
5912 | return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m", |
5913 | DEVNUM_FORMAT_VAL(devno)); | |
5c08da58 LP |
5914 | |
5915 | if (fstat(source_fd, &st) < 0) | |
5916 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
1a037ba2 | 5917 | } else |
5c08da58 | 5918 | continue; |
757bc2e4 LP |
5919 | |
5920 | if (S_ISDIR(st.st_mode)) { | |
ca822829 YW |
5921 | _cleanup_free_ char *bdev = NULL; |
5922 | dev_t devt; | |
757bc2e4 LP |
5923 | |
5924 | /* If the file is a directory, automatically find the backing block device */ | |
5925 | ||
5926 | if (major(st.st_dev) != 0) | |
ca822829 | 5927 | devt = st.st_dev; |
757bc2e4 | 5928 | else { |
757bc2e4 | 5929 | /* Special support for btrfs */ |
757bc2e4 | 5930 | r = btrfs_get_block_device_fd(source_fd, &devt); |
67f0ac8c | 5931 | if (r == -EUCLEAN) |
5c08da58 | 5932 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 5933 | if (r < 0) |
5c08da58 | 5934 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 | 5935 | } |
757bc2e4 LP |
5936 | |
5937 | safe_close(source_fd); | |
5938 | ||
ca822829 YW |
5939 | source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev); |
5940 | if (r < 0) | |
5941 | return log_error_errno(r, "Failed to open block device backing '%s': %m", opened); | |
757bc2e4 LP |
5942 | |
5943 | if (fstat(source_fd, &st) < 0) | |
5944 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
757bc2e4 LP |
5945 | } |
5946 | ||
5947 | if (S_ISREG(st.st_mode)) | |
5948 | size = st.st_size; | |
5949 | else if (S_ISBLK(st.st_mode)) { | |
5950 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
5951 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
5952 | } else | |
5c08da58 | 5953 | 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 |
5954 | |
5955 | if (size <= 0) | |
5c08da58 | 5956 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 5957 | if (size % 512 != 0) |
5c08da58 | 5958 | 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 |
5959 | |
5960 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
5961 | p->copy_blocks_size = size; | |
5c08da58 LP |
5962 | |
5963 | free_and_replace(p->copy_blocks_path, opened); | |
5964 | ||
5965 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
11749b61 | 5966 | if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) { |
5c08da58 | 5967 | p->new_uuid = uuid; |
11749b61 DDM |
5968 | p->new_uuid_is_set = true; |
5969 | } | |
757bc2e4 LP |
5970 | } |
5971 | ||
5972 | return 0; | |
5973 | } | |
5974 | ||
c4a87b76 DDM |
5975 | static int fd_apparent_size(int fd, uint64_t *ret) { |
5976 | off_t initial = 0; | |
5977 | uint64_t size = 0; | |
5978 | ||
5979 | assert(fd >= 0); | |
5980 | assert(ret); | |
5981 | ||
5982 | initial = lseek(fd, 0, SEEK_CUR); | |
5983 | if (initial < 0) | |
5984 | return log_error_errno(errno, "Failed to get file offset: %m"); | |
5985 | ||
5986 | for (off_t off = 0;;) { | |
5987 | off_t r; | |
5988 | ||
5989 | r = lseek(fd, off, SEEK_DATA); | |
5990 | if (r < 0 && errno == ENXIO) | |
5991 | /* If errno == ENXIO, that means we've reached the final hole of the file and | |
5992 | * that hole isn't followed by more data. */ | |
5993 | break; | |
5994 | if (r < 0) | |
5995 | return log_error_errno(errno, "Failed to seek data in file from offset %"PRIi64": %m", off); | |
5996 | ||
5997 | off = r; /* Set the offset to the start of the data segment. */ | |
5998 | ||
5999 | /* After copying a potential hole, find the end of the data segment by looking for | |
6000 | * the next hole. If we get ENXIO, we're at EOF. */ | |
6001 | r = lseek(fd, off, SEEK_HOLE); | |
6002 | if (r < 0) { | |
6003 | if (errno == ENXIO) | |
6004 | break; | |
6005 | return log_error_errno(errno, "Failed to seek hole in file from offset %"PRIi64": %m", off); | |
6006 | } | |
6007 | ||
6008 | size += r - off; | |
6009 | off = r; | |
6010 | } | |
6011 | ||
6012 | if (lseek(fd, initial, SEEK_SET) < 0) | |
6013 | return log_error_errno(errno, "Failed to reset file offset: %m"); | |
6014 | ||
6015 | *ret = size; | |
6016 | ||
6017 | return 0; | |
6018 | } | |
6019 | ||
6020 | static int context_minimize(Context *context) { | |
c264ec5f | 6021 | const char *vt = NULL; |
c4a87b76 DDM |
6022 | int r; |
6023 | ||
6024 | assert(context); | |
6025 | ||
c4a87b76 | 6026 | LIST_FOREACH(partitions, p, context->partitions) { |
e59678b2 | 6027 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
c4a87b76 | 6028 | _cleanup_(unlink_and_freep) char *temp = NULL; |
d3201eb4 | 6029 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
4b8ce14f | 6030 | _cleanup_strv_free_ char **extra_mkfs_options = NULL; |
254d1313 | 6031 | _cleanup_close_ int fd = -EBADF; |
b24bfd6e | 6032 | _cleanup_free_ char *hint = NULL; |
c4a87b76 | 6033 | sd_id128_t fs_uuid; |
6ac299e3 | 6034 | struct stat st; |
c4a87b76 DDM |
6035 | uint64_t fsz; |
6036 | ||
6037 | if (p->dropped) | |
6038 | continue; | |
6039 | ||
6040 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
6041 | continue; | |
6042 | ||
6043 | if (!p->format) | |
6044 | continue; | |
6045 | ||
dea0dc7b DDM |
6046 | if (p->copy_blocks_fd >= 0) |
6047 | continue; | |
6048 | ||
5c33b686 | 6049 | if (p->minimize == MINIMIZE_OFF) |
c4a87b76 DDM |
6050 | continue; |
6051 | ||
d3201eb4 DDM |
6052 | if (!partition_needs_populate(p)) |
6053 | continue; | |
6054 | ||
c4a87b76 DDM |
6055 | assert(!p->copy_blocks_path); |
6056 | ||
b24bfd6e DDM |
6057 | (void) partition_hint(p, context->node, &hint); |
6058 | ||
6059 | log_info("Pre-populating %s filesystem of partition %s twice to calculate minimal partition size", | |
6060 | p->format, strna(hint)); | |
6061 | ||
c264ec5f ZJS |
6062 | if (!vt) { |
6063 | r = var_tmp_dir(&vt); | |
6064 | if (r < 0) | |
6065 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
6066 | } | |
6067 | ||
c4a87b76 DDM |
6068 | r = tempfn_random_child(vt, "repart", &temp); |
6069 | if (r < 0) | |
6070 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
6071 | ||
59e2be46 DDM |
6072 | if (fstype_is_ro(p->format)) |
6073 | fs_uuid = p->fs_uuid; | |
6074 | else { | |
c4a87b76 DDM |
6075 | fd = open(temp, O_CREAT|O_EXCL|O_CLOEXEC|O_RDWR|O_NOCTTY, 0600); |
6076 | if (fd < 0) | |
6077 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
6078 | ||
6079 | /* This may seem huge but it will be created sparse so it doesn't take up any space | |
d3201eb4 | 6080 | * on disk until written to. */ |
c4a87b76 DDM |
6081 | if (ftruncate(fd, 1024ULL * 1024ULL * 1024ULL * 1024ULL) < 0) |
6082 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
6083 | FORMAT_BYTES(1024ULL * 1024ULL * 1024ULL * 1024ULL)); | |
6084 | ||
e30c6e91 | 6085 | if (arg_offline <= 0) { |
66a8c74c | 6086 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, context->sector_size, 0, LOCK_EX, &d); |
ffd9d75c | 6087 | if (r < 0 && (arg_offline == 0 || (r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) || !strv_isempty(p->subvolumes))) |
e30c6e91 DDM |
6088 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); |
6089 | } | |
d3201eb4 | 6090 | |
c4a87b76 DDM |
6091 | /* We're going to populate this filesystem twice so use a random UUID the first time |
6092 | * to avoid UUID conflicts. */ | |
6093 | r = sd_id128_randomize(&fs_uuid); | |
6094 | if (r < 0) | |
6095 | return r; | |
59e2be46 DDM |
6096 | } |
6097 | ||
d3201eb4 DDM |
6098 | if (!d || fstype_is_ro(p->format)) { |
6099 | if (!mkfs_supports_root_option(p->format)) | |
6100 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
6101 | "Loop device access is required to populate %s filesystems", | |
6102 | p->format); | |
6103 | ||
e57b7020 | 6104 | r = partition_populate_directory(context, p, &root); |
c4a87b76 DDM |
6105 | if (r < 0) |
6106 | return r; | |
c4a87b76 DDM |
6107 | } |
6108 | ||
4b8ce14f DDM |
6109 | r = mkfs_options_from_env("REPART", p->format, &extra_mkfs_options); |
6110 | if (r < 0) | |
6111 | return log_error_errno(r, | |
6112 | "Failed to determine mkfs command line options for '%s': %m", | |
6113 | p->format); | |
6114 | ||
93f125a6 DDM |
6115 | r = make_filesystem(d ? d->node : temp, |
6116 | p->format, | |
6117 | strempty(p->new_label), | |
6118 | root, | |
6119 | fs_uuid, | |
6120 | arg_discard, /* quiet = */ false, | |
6121 | context->fs_sector_size, | |
6122 | extra_mkfs_options); | |
c4a87b76 DDM |
6123 | if (r < 0) |
6124 | return r; | |
6125 | ||
6126 | /* Read-only filesystems are minimal from the first try because they create and size the | |
6127 | * loopback file for us. */ | |
6128 | if (fstype_is_ro(p->format)) { | |
dea0dc7b | 6129 | assert(fd < 0); |
2843df3e | 6130 | |
dea0dc7b DDM |
6131 | fd = open(temp, O_RDONLY|O_CLOEXEC|O_NONBLOCK); |
6132 | if (fd < 0) | |
6133 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
6134 | ||
6135 | if (fstat(fd, &st) < 0) | |
b24bfd6e DDM |
6136 | return log_error_errno(errno, "Failed to stat temporary file: %m"); |
6137 | ||
6138 | log_info("Minimal partition size of %s filesystem of partition %s is %s", | |
6139 | p->format, strna(hint), FORMAT_BYTES(st.st_size)); | |
6140 | ||
c4a87b76 | 6141 | p->copy_blocks_path = TAKE_PTR(temp); |
7d07030e | 6142 | p->copy_blocks_path_is_our_file = true; |
2843df3e DDM |
6143 | p->copy_blocks_fd = TAKE_FD(fd); |
6144 | p->copy_blocks_size = st.st_size; | |
c4a87b76 DDM |
6145 | continue; |
6146 | } | |
6147 | ||
d3201eb4 DDM |
6148 | if (!root) { |
6149 | assert(d); | |
6150 | ||
e57b7020 | 6151 | r = partition_populate_filesystem(context, p, d->node); |
59e2be46 DDM |
6152 | if (r < 0) |
6153 | return r; | |
6154 | } | |
c4a87b76 DDM |
6155 | |
6156 | /* Other filesystems need to be provided with a pre-sized loopback file and will adapt to | |
6157 | * fully occupy it. Because we gave the filesystem a 1T sparse file, we need to shrink the | |
6158 | * filesystem down to a reasonable size again to fit it in the disk image. While there are | |
6159 | * some filesystems that support shrinking, it doesn't always work properly (e.g. shrinking | |
6160 | * btrfs gives us a 2.0G filesystem regardless of what we put in it). Instead, let's populate | |
6161 | * the filesystem again, but this time, instead of providing the filesystem with a 1T sparse | |
6162 | * loopback file, let's size the loopback file based on the actual data used by the | |
6163 | * filesystem in the sparse file after the first attempt. This should be a good guess of the | |
6164 | * minimal amount of space needed in the filesystem to fit all the required data. | |
6165 | */ | |
6166 | r = fd_apparent_size(fd, &fsz); | |
6167 | if (r < 0) | |
6168 | return r; | |
6169 | ||
6170 | /* Massage the size a bit because just going by actual data used in the sparse file isn't | |
6171 | * fool-proof. */ | |
7bc6c028 DDM |
6172 | uint64_t heuristic = streq(p->format, "xfs") ? fsz : fsz / 2; |
6173 | fsz = round_up_size(fsz + heuristic, context->grain_size); | |
c4a87b76 DDM |
6174 | if (minimal_size_by_fs_name(p->format) != UINT64_MAX) |
6175 | fsz = MAX(minimal_size_by_fs_name(p->format), fsz); | |
6176 | ||
b24bfd6e DDM |
6177 | log_info("Minimal partition size of %s filesystem of partition %s is %s", |
6178 | p->format, strna(hint), FORMAT_BYTES(fsz)); | |
6179 | ||
d3201eb4 DDM |
6180 | d = loop_device_unref(d); |
6181 | ||
c4a87b76 DDM |
6182 | /* Erase the previous filesystem first. */ |
6183 | if (ftruncate(fd, 0)) | |
6184 | return log_error_errno(errno, "Failed to erase temporary file: %m"); | |
6185 | ||
6186 | if (ftruncate(fd, fsz)) | |
6187 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", FORMAT_BYTES(fsz)); | |
6188 | ||
e30c6e91 | 6189 | if (arg_offline <= 0) { |
66a8c74c | 6190 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, context->sector_size, 0, LOCK_EX, &d); |
ffd9d75c | 6191 | if (r < 0 && (arg_offline == 0 || (r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) || !strv_isempty(p->subvolumes))) |
e30c6e91 DDM |
6192 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); |
6193 | } | |
d3201eb4 | 6194 | |
93f125a6 DDM |
6195 | r = make_filesystem(d ? d->node : temp, |
6196 | p->format, | |
6197 | strempty(p->new_label), | |
6198 | root, | |
6199 | p->fs_uuid, | |
6200 | arg_discard, | |
6201 | /* quiet = */ false, | |
6202 | context->fs_sector_size, | |
6203 | extra_mkfs_options); | |
c4a87b76 DDM |
6204 | if (r < 0) |
6205 | return r; | |
6206 | ||
d3201eb4 DDM |
6207 | if (!root) { |
6208 | assert(d); | |
6209 | ||
e57b7020 | 6210 | r = partition_populate_filesystem(context, p, d->node); |
59e2be46 DDM |
6211 | if (r < 0) |
6212 | return r; | |
6213 | } | |
c4a87b76 | 6214 | |
6ac299e3 DDM |
6215 | if (fstat(fd, &st) < 0) |
6216 | return log_error_errno(errno, "Failed to stat temporary file: %m"); | |
dea0dc7b | 6217 | |
c4a87b76 | 6218 | p->copy_blocks_path = TAKE_PTR(temp); |
7d07030e | 6219 | p->copy_blocks_path_is_our_file = true; |
2843df3e | 6220 | p->copy_blocks_fd = TAKE_FD(fd); |
6ac299e3 | 6221 | p->copy_blocks_size = st.st_size; |
c4a87b76 DDM |
6222 | } |
6223 | ||
5eef7047 DDM |
6224 | /* Now that we've done the data partitions, do the verity hash partitions. We do these in a separate |
6225 | * step because they might depend on data generated in the previous step. */ | |
6226 | ||
6227 | LIST_FOREACH(partitions, p, context->partitions) { | |
6228 | _cleanup_(unlink_and_freep) char *temp = NULL; | |
6229 | _cleanup_free_ char *hint = NULL; | |
2843df3e | 6230 | _cleanup_close_ int fd = -EBADF; |
5eef7047 DDM |
6231 | struct stat st; |
6232 | Partition *dp; | |
6233 | ||
6234 | if (p->dropped) | |
6235 | continue; | |
6236 | ||
6237 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
6238 | continue; | |
6239 | ||
6240 | if (p->minimize == MINIMIZE_OFF) | |
6241 | continue; | |
6242 | ||
6243 | if (p->verity != VERITY_HASH) | |
6244 | continue; | |
6245 | ||
6246 | assert_se(dp = p->siblings[VERITY_DATA]); | |
6247 | assert(!dp->dropped); | |
6248 | assert(dp->copy_blocks_path); | |
6249 | ||
6250 | (void) partition_hint(p, context->node, &hint); | |
6251 | ||
6252 | log_info("Pre-populating verity hash data of partition %s to calculate minimal partition size", | |
6253 | strna(hint)); | |
6254 | ||
c264ec5f ZJS |
6255 | if (!vt) { |
6256 | r = var_tmp_dir(&vt); | |
6257 | if (r < 0) | |
6258 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
6259 | } | |
6260 | ||
5eef7047 DDM |
6261 | r = tempfn_random_child(vt, "repart", &temp); |
6262 | if (r < 0) | |
6263 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
6264 | ||
6265 | r = touch(temp); | |
6266 | if (r < 0) | |
6267 | return log_error_errno(r, "Failed to create temporary file: %m"); | |
6268 | ||
6269 | r = partition_format_verity_hash(context, p, temp, dp->copy_blocks_path); | |
6270 | if (r < 0) | |
6271 | return r; | |
6272 | ||
2843df3e DDM |
6273 | fd = open(temp, O_RDONLY|O_CLOEXEC|O_NONBLOCK); |
6274 | if (fd < 0) | |
6275 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
6276 | ||
6277 | if (fstat(fd, &st) < 0) | |
5eef7047 DDM |
6278 | return log_error_errno(r, "Failed to stat temporary file: %m"); |
6279 | ||
6280 | log_info("Minimal partition size of verity hash partition %s is %s", | |
6281 | strna(hint), FORMAT_BYTES(st.st_size)); | |
6282 | ||
6283 | p->copy_blocks_path = TAKE_PTR(temp); | |
6284 | p->copy_blocks_path_is_our_file = true; | |
2843df3e DDM |
6285 | p->copy_blocks_fd = TAKE_FD(fd); |
6286 | p->copy_blocks_size = st.st_size; | |
5eef7047 DDM |
6287 | } |
6288 | ||
c4a87b76 DDM |
6289 | return 0; |
6290 | } | |
6291 | ||
9786dfe6 | 6292 | static int parse_partition_types(const char *p, GptPartitionType **partitions, size_t *n_partitions) { |
81d1098b DDM |
6293 | int r; |
6294 | ||
220780db DDM |
6295 | assert(partitions); |
6296 | assert(n_partitions); | |
6297 | ||
81d1098b DDM |
6298 | for (;;) { |
6299 | _cleanup_free_ char *name = NULL; | |
6300 | GptPartitionType type; | |
6301 | ||
6302 | r = extract_first_word(&p, &name, ",", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
6303 | if (r == 0) | |
6304 | break; | |
6305 | if (r < 0) | |
766f52f2 | 6306 | return log_error_errno(r, "Failed to extract partition type identifier or GUID: %s", p); |
81d1098b DDM |
6307 | |
6308 | r = gpt_partition_type_from_string(name, &type); | |
6309 | if (r < 0) | |
766f52f2 | 6310 | return log_error_errno(r, "'%s' is not a valid partition type identifier or GUID", name); |
81d1098b | 6311 | |
220780db | 6312 | if (!GREEDY_REALLOC(*partitions, *n_partitions + 1)) |
81d1098b DDM |
6313 | return log_oom(); |
6314 | ||
9786dfe6 | 6315 | (*partitions)[(*n_partitions)++] = type; |
81d1098b DDM |
6316 | } |
6317 | ||
6318 | return 0; | |
6319 | } | |
6320 | ||
e594a3b1 LP |
6321 | static int help(void) { |
6322 | _cleanup_free_ char *link = NULL; | |
6323 | int r; | |
6324 | ||
6dadf31d | 6325 | r = terminal_urlify_man("systemd-repart", "8", &link); |
e594a3b1 LP |
6326 | if (r < 0) |
6327 | return log_oom(); | |
6328 | ||
6329 | printf("%s [OPTIONS...] [DEVICE]\n" | |
6330 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
6331 | " -h --help Show this help\n" | |
6332 | " --version Show package version\n" | |
896e678b LP |
6333 | " --no-pager Do not pipe output into a pager\n" |
6334 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 6335 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
6336 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
6337 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 6338 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 6339 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
6340 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
6341 | " them\n" | |
6342 | " --can-factory-reset Test whether factory reset is defined\n" | |
6343 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 6344 | " --image=PATH Operate relative to image file\n" |
84be0c71 LP |
6345 | " --image-policy=POLICY\n" |
6346 | " Specify disk image dissection policy\n" | |
9d252fbb | 6347 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 6348 | " --key-file=PATH Key to use when encrypting partitions\n" |
b456191d DDM |
6349 | " --private-key=PATH Private key to use when generating verity roothash\n" |
6350 | " signatures\n" | |
6351 | " --certificate=PATH PEM certificate to use when generating verity\n" | |
6352 | " roothash signatures\n" | |
889914ef | 6353 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 6354 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 6355 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
02ef97cd LP |
6356 | " --tpm2-public-key=PATH\n" |
6357 | " Enroll signed TPM2 PCR policy against PEM public key\n" | |
6358 | " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n" | |
6359 | " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n" | |
da890466 | 6360 | " --seed=UUID 128-bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 6361 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 6362 | " --json=pretty|short|off\n" |
de8231b0 | 6363 | " Generate JSON output\n" |
4cee8333 | 6364 | " --split=BOOL Whether to generate split artifacts\n" |
81d1098b | 6365 | " --include-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 6366 | " Ignore partitions not of the specified types\n" |
81d1098b | 6367 | " --exclude-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 6368 | " Ignore partitions of the specified types\n" |
8275334b | 6369 | " --defer-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 DDM |
6370 | " Take partitions of the specified types into account\n" |
6371 | " but don't populate them yet\n" | |
e1878ef7 | 6372 | " --sector-size=SIZE Set the logical sector size for the image\n" |
9786dfe6 | 6373 | " --architecture=ARCH Set the generic architecture for the image\n" |
fc10b158 | 6374 | " --offline=BOOL Whether to build the image offline\n" |
e1536d1f | 6375 | " --copy-from=IMAGE Copy partitions from the given image(s)\n" |
bc556335 DDM |
6376 | "\nSee the %s for details.\n", |
6377 | program_invocation_short_name, | |
6378 | ansi_highlight(), | |
6379 | ansi_normal(), | |
6380 | link); | |
e594a3b1 LP |
6381 | |
6382 | return 0; | |
6383 | } | |
6384 | ||
6385 | static int parse_argv(int argc, char *argv[]) { | |
6386 | ||
6387 | enum { | |
6388 | ARG_VERSION = 0x100, | |
896e678b LP |
6389 | ARG_NO_PAGER, |
6390 | ARG_NO_LEGEND, | |
e594a3b1 LP |
6391 | ARG_DRY_RUN, |
6392 | ARG_EMPTY, | |
6393 | ARG_DISCARD, | |
6394 | ARG_FACTORY_RESET, | |
6395 | ARG_CAN_FACTORY_RESET, | |
6396 | ARG_ROOT, | |
252d6267 | 6397 | ARG_IMAGE, |
06e78680 | 6398 | ARG_IMAGE_POLICY, |
e594a3b1 LP |
6399 | ARG_SEED, |
6400 | ARG_PRETTY, | |
6401 | ARG_DEFINITIONS, | |
a26f4a49 | 6402 | ARG_SIZE, |
a015fbe7 | 6403 | ARG_JSON, |
b9df3536 | 6404 | ARG_KEY_FILE, |
b456191d DDM |
6405 | ARG_PRIVATE_KEY, |
6406 | ARG_CERTIFICATE, | |
889914ef LP |
6407 | ARG_TPM2_DEVICE, |
6408 | ARG_TPM2_PCRS, | |
02ef97cd LP |
6409 | ARG_TPM2_PUBLIC_KEY, |
6410 | ARG_TPM2_PUBLIC_KEY_PCRS, | |
4cee8333 | 6411 | ARG_SPLIT, |
81d1098b DDM |
6412 | ARG_INCLUDE_PARTITIONS, |
6413 | ARG_EXCLUDE_PARTITIONS, | |
8275334b | 6414 | ARG_DEFER_PARTITIONS, |
e1878ef7 | 6415 | ARG_SECTOR_SIZE, |
84be0c71 | 6416 | ARG_SKIP_PARTITIONS, |
9786dfe6 | 6417 | ARG_ARCHITECTURE, |
fc10b158 | 6418 | ARG_OFFLINE, |
1e46985a | 6419 | ARG_COPY_FROM, |
e594a3b1 LP |
6420 | }; |
6421 | ||
6422 | static const struct option options[] = { | |
02ef97cd LP |
6423 | { "help", no_argument, NULL, 'h' }, |
6424 | { "version", no_argument, NULL, ARG_VERSION }, | |
6425 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
6426 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
6427 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, | |
6428 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
6429 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
6430 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
6431 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
6432 | { "root", required_argument, NULL, ARG_ROOT }, | |
6433 | { "image", required_argument, NULL, ARG_IMAGE }, | |
06e78680 | 6434 | { "image-policy", required_argument, NULL, ARG_IMAGE_POLICY }, |
02ef97cd LP |
6435 | { "seed", required_argument, NULL, ARG_SEED }, |
6436 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
6437 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
6438 | { "size", required_argument, NULL, ARG_SIZE }, | |
6439 | { "json", required_argument, NULL, ARG_JSON }, | |
6440 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, | |
b456191d DDM |
6441 | { "private-key", required_argument, NULL, ARG_PRIVATE_KEY }, |
6442 | { "certificate", required_argument, NULL, ARG_CERTIFICATE }, | |
02ef97cd LP |
6443 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
6444 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
6445 | { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY }, | |
6446 | { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS }, | |
4cee8333 | 6447 | { "split", required_argument, NULL, ARG_SPLIT }, |
81d1098b DDM |
6448 | { "include-partitions", required_argument, NULL, ARG_INCLUDE_PARTITIONS }, |
6449 | { "exclude-partitions", required_argument, NULL, ARG_EXCLUDE_PARTITIONS }, | |
8275334b | 6450 | { "defer-partitions", required_argument, NULL, ARG_DEFER_PARTITIONS }, |
e1878ef7 | 6451 | { "sector-size", required_argument, NULL, ARG_SECTOR_SIZE }, |
9786dfe6 | 6452 | { "architecture", required_argument, NULL, ARG_ARCHITECTURE }, |
fc10b158 | 6453 | { "offline", required_argument, NULL, ARG_OFFLINE }, |
1e46985a | 6454 | { "copy-from", required_argument, NULL, ARG_COPY_FROM }, |
e594a3b1 LP |
6455 | {} |
6456 | }; | |
6457 | ||
a26f4a49 | 6458 | int c, r, dry_run = -1; |
e594a3b1 LP |
6459 | |
6460 | assert(argc >= 0); | |
6461 | assert(argv); | |
6462 | ||
6463 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
6464 | ||
6465 | switch (c) { | |
6466 | ||
6467 | case 'h': | |
6468 | return help(); | |
6469 | ||
6470 | case ARG_VERSION: | |
6471 | return version(); | |
6472 | ||
896e678b LP |
6473 | case ARG_NO_PAGER: |
6474 | arg_pager_flags |= PAGER_DISABLE; | |
6475 | break; | |
6476 | ||
6477 | case ARG_NO_LEGEND: | |
6478 | arg_legend = false; | |
6479 | break; | |
6480 | ||
e594a3b1 | 6481 | case ARG_DRY_RUN: |
599c7c54 | 6482 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 6483 | if (r < 0) |
599c7c54 | 6484 | return r; |
e594a3b1 LP |
6485 | break; |
6486 | ||
6487 | case ARG_EMPTY: | |
243dd1e9 LP |
6488 | if (isempty(optarg)) |
6489 | arg_empty = EMPTY_UNSET; | |
6490 | else if (streq(optarg, "refuse")) | |
e594a3b1 LP |
6491 | arg_empty = EMPTY_REFUSE; |
6492 | else if (streq(optarg, "allow")) | |
6493 | arg_empty = EMPTY_ALLOW; | |
6494 | else if (streq(optarg, "require")) | |
6495 | arg_empty = EMPTY_REQUIRE; | |
6496 | else if (streq(optarg, "force")) | |
6497 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
6498 | else if (streq(optarg, "create")) { |
6499 | arg_empty = EMPTY_CREATE; | |
6500 | ||
6501 | if (dry_run < 0) | |
6502 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
6503 | * anew. After all we cannot really break anyone's | |
6504 | * partition tables that way. */ | |
6505 | } else | |
e594a3b1 LP |
6506 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6507 | "Failed to parse --empty= parameter: %s", optarg); | |
6508 | break; | |
6509 | ||
6510 | case ARG_DISCARD: | |
599c7c54 | 6511 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 6512 | if (r < 0) |
599c7c54 | 6513 | return r; |
e594a3b1 LP |
6514 | break; |
6515 | ||
6516 | case ARG_FACTORY_RESET: | |
c3470872 | 6517 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 6518 | if (r < 0) |
c3470872 | 6519 | return r; |
e594a3b1 LP |
6520 | arg_factory_reset = r; |
6521 | break; | |
6522 | ||
6523 | case ARG_CAN_FACTORY_RESET: | |
6524 | arg_can_factory_reset = true; | |
6525 | break; | |
6526 | ||
6527 | case ARG_ROOT: | |
252d6267 LP |
6528 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
6529 | if (r < 0) | |
6530 | return r; | |
6531 | break; | |
6532 | ||
6533 | case ARG_IMAGE: | |
6534 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
6535 | if (r < 0) |
6536 | return r; | |
6537 | break; | |
6538 | ||
06e78680 YW |
6539 | case ARG_IMAGE_POLICY: |
6540 | r = parse_image_policy_argument(optarg, &arg_image_policy); | |
6541 | if (r < 0) | |
6542 | return r; | |
6543 | break; | |
6544 | ||
e594a3b1 LP |
6545 | case ARG_SEED: |
6546 | if (isempty(optarg)) { | |
6547 | arg_seed = SD_ID128_NULL; | |
6548 | arg_randomize = false; | |
6549 | } else if (streq(optarg, "random")) | |
6550 | arg_randomize = true; | |
6551 | else { | |
6552 | r = sd_id128_from_string(optarg, &arg_seed); | |
6553 | if (r < 0) | |
6554 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
6555 | ||
6556 | arg_randomize = false; | |
6557 | } | |
6558 | ||
6559 | break; | |
6560 | ||
6561 | case ARG_PRETTY: | |
c3470872 | 6562 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 6563 | if (r < 0) |
c3470872 | 6564 | return r; |
e594a3b1 LP |
6565 | arg_pretty = r; |
6566 | break; | |
6567 | ||
224c853f RP |
6568 | case ARG_DEFINITIONS: { |
6569 | _cleanup_free_ char *path = NULL; | |
6570 | r = parse_path_argument(optarg, false, &path); | |
e594a3b1 LP |
6571 | if (r < 0) |
6572 | return r; | |
224c853f RP |
6573 | if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0) |
6574 | return log_oom(); | |
e594a3b1 | 6575 | break; |
224c853f | 6576 | } |
e594a3b1 | 6577 | |
a26f4a49 LP |
6578 | case ARG_SIZE: { |
6579 | uint64_t parsed, rounded; | |
6580 | ||
170c9823 LP |
6581 | if (streq(optarg, "auto")) { |
6582 | arg_size = UINT64_MAX; | |
6583 | arg_size_auto = true; | |
6584 | break; | |
6585 | } | |
6586 | ||
a26f4a49 LP |
6587 | r = parse_size(optarg, 1024, &parsed); |
6588 | if (r < 0) | |
6589 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
6590 | ||
6591 | rounded = round_up_size(parsed, 4096); | |
6592 | if (rounded == 0) | |
6593 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
6594 | if (rounded == UINT64_MAX) | |
6595 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
6596 | ||
6597 | if (rounded != parsed) | |
e2341b6b DT |
6598 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")", |
6599 | parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded); | |
a26f4a49 LP |
6600 | |
6601 | arg_size = rounded; | |
170c9823 | 6602 | arg_size_auto = false; |
a26f4a49 LP |
6603 | break; |
6604 | } | |
b9df3536 | 6605 | |
a015fbe7 | 6606 | case ARG_JSON: |
b1e8f46c | 6607 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
6608 | if (r <= 0) |
6609 | return r; | |
a015fbe7 TH |
6610 | |
6611 | break; | |
6612 | ||
b9df3536 LP |
6613 | case ARG_KEY_FILE: { |
6614 | _cleanup_(erase_and_freep) char *k = NULL; | |
6615 | size_t n = 0; | |
6616 | ||
8b3c3a49 | 6617 | r = read_full_file_full( |
986311c2 | 6618 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
6619 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
6620 | NULL, | |
6621 | &k, &n); | |
b9df3536 LP |
6622 | if (r < 0) |
6623 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
6624 | ||
6625 | erase_and_free(arg_key); | |
6626 | arg_key = TAKE_PTR(k); | |
6627 | arg_key_size = n; | |
6628 | break; | |
6629 | } | |
a26f4a49 | 6630 | |
b456191d DDM |
6631 | case ARG_PRIVATE_KEY: { |
6632 | _cleanup_(erase_and_freep) char *k = NULL; | |
6633 | size_t n = 0; | |
6634 | ||
6635 | r = read_full_file_full( | |
6636 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
6637 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, | |
6638 | NULL, | |
6639 | &k, &n); | |
6640 | if (r < 0) | |
6641 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
6642 | ||
6643 | EVP_PKEY_free(arg_private_key); | |
6644 | arg_private_key = NULL; | |
6645 | r = parse_private_key(k, n, &arg_private_key); | |
6646 | if (r < 0) | |
6647 | return r; | |
6648 | break; | |
6649 | } | |
6650 | ||
6651 | case ARG_CERTIFICATE: { | |
6652 | _cleanup_free_ char *cert = NULL; | |
6653 | size_t n = 0; | |
6654 | ||
6655 | r = read_full_file_full( | |
6656 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
6657 | READ_FULL_FILE_CONNECT_SOCKET, | |
6658 | NULL, | |
6659 | &cert, &n); | |
6660 | if (r < 0) | |
6661 | return log_error_errno(r, "Failed to read certificate file '%s': %m", optarg); | |
6662 | ||
6663 | X509_free(arg_certificate); | |
6664 | arg_certificate = NULL; | |
6665 | r = parse_x509_certificate(cert, n, &arg_certificate); | |
6666 | if (r < 0) | |
6667 | return r; | |
6668 | break; | |
6669 | } | |
6670 | ||
889914ef LP |
6671 | case ARG_TPM2_DEVICE: { |
6672 | _cleanup_free_ char *device = NULL; | |
6673 | ||
6674 | if (streq(optarg, "list")) | |
6675 | return tpm2_list_devices(); | |
6676 | ||
6677 | if (!streq(optarg, "auto")) { | |
6678 | device = strdup(optarg); | |
6679 | if (!device) | |
6680 | return log_oom(); | |
6681 | } | |
6682 | ||
6683 | free(arg_tpm2_device); | |
6684 | arg_tpm2_device = TAKE_PTR(device); | |
6685 | break; | |
6686 | } | |
6687 | ||
222a951f | 6688 | case ARG_TPM2_PCRS: |
9e437994 DS |
6689 | arg_tpm2_hash_pcr_values_use_default = false; |
6690 | r = tpm2_parse_pcr_argument_append(optarg, &arg_tpm2_hash_pcr_values, &arg_tpm2_n_hash_pcr_values); | |
889914ef LP |
6691 | if (r < 0) |
6692 | return r; | |
6693 | ||
889914ef | 6694 | break; |
889914ef | 6695 | |
02ef97cd LP |
6696 | case ARG_TPM2_PUBLIC_KEY: |
6697 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key); | |
6698 | if (r < 0) | |
6699 | return r; | |
6700 | ||
6701 | break; | |
6702 | ||
6703 | case ARG_TPM2_PUBLIC_KEY_PCRS: | |
9e437994 | 6704 | arg_tpm2_public_key_pcr_mask_use_default = false; |
07c04061 | 6705 | r = tpm2_parse_pcr_argument_to_mask(optarg, &arg_tpm2_public_key_pcr_mask); |
02ef97cd LP |
6706 | if (r < 0) |
6707 | return r; | |
6708 | ||
6709 | break; | |
6710 | ||
4cee8333 DDM |
6711 | case ARG_SPLIT: |
6712 | r = parse_boolean_argument("--split=", optarg, NULL); | |
6713 | if (r < 0) | |
6714 | return r; | |
6715 | ||
6716 | arg_split = r; | |
6717 | break; | |
6718 | ||
81d1098b DDM |
6719 | case ARG_INCLUDE_PARTITIONS: |
6720 | if (arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE) | |
6721 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6722 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
6723 | ||
220780db | 6724 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
6725 | if (r < 0) |
6726 | return r; | |
6727 | ||
6728 | arg_filter_partitions_type = FILTER_PARTITIONS_INCLUDE; | |
6729 | ||
6730 | break; | |
6731 | ||
6732 | case ARG_EXCLUDE_PARTITIONS: | |
6733 | if (arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE) | |
6734 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6735 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
6736 | ||
220780db | 6737 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
6738 | if (r < 0) |
6739 | return r; | |
6740 | ||
6741 | arg_filter_partitions_type = FILTER_PARTITIONS_EXCLUDE; | |
6742 | ||
6743 | break; | |
6744 | ||
8275334b DDM |
6745 | case ARG_DEFER_PARTITIONS: |
6746 | r = parse_partition_types(optarg, &arg_defer_partitions, &arg_n_defer_partitions); | |
7d505753 DDM |
6747 | if (r < 0) |
6748 | return r; | |
6749 | ||
6750 | break; | |
6751 | ||
e1878ef7 DDM |
6752 | case ARG_SECTOR_SIZE: |
6753 | r = parse_sector_size(optarg, &arg_sector_size); | |
6754 | if (r < 0) | |
6755 | return r; | |
6756 | ||
6757 | break; | |
6758 | ||
9786dfe6 DDM |
6759 | case ARG_ARCHITECTURE: |
6760 | r = architecture_from_string(optarg); | |
6761 | if (r < 0) | |
6762 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid architecture '%s'", optarg); | |
6763 | ||
6764 | arg_architecture = r; | |
6765 | break; | |
6766 | ||
fc10b158 DDM |
6767 | case ARG_OFFLINE: |
6768 | if (streq(optarg, "auto")) | |
6769 | arg_offline = -1; | |
6770 | else { | |
6771 | r = parse_boolean_argument("--offline=", optarg, NULL); | |
6772 | if (r < 0) | |
6773 | return r; | |
6774 | ||
6775 | arg_offline = r; | |
6776 | } | |
6777 | ||
6778 | break; | |
6779 | ||
e1536d1f DDM |
6780 | case ARG_COPY_FROM: { |
6781 | _cleanup_free_ char *p = NULL; | |
6782 | ||
6783 | r = parse_path_argument(optarg, /* suppress_root= */ false, &p); | |
1e46985a DDM |
6784 | if (r < 0) |
6785 | return r; | |
e1536d1f DDM |
6786 | |
6787 | if (strv_consume(&arg_copy_from, TAKE_PTR(p)) < 0) | |
6788 | return log_oom(); | |
6789 | ||
1e46985a | 6790 | break; |
e1536d1f | 6791 | } |
1e46985a | 6792 | |
e594a3b1 LP |
6793 | case '?': |
6794 | return -EINVAL; | |
6795 | ||
6796 | default: | |
04499a70 | 6797 | assert_not_reached(); |
e594a3b1 LP |
6798 | } |
6799 | ||
6800 | if (argc - optind > 1) | |
6801 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6802 | "Expected at most one argument, the path to the block device."); | |
6803 | ||
243dd1e9 LP |
6804 | if (arg_empty == EMPTY_UNSET) /* default to refuse mode, if not otherwise specified */ |
6805 | arg_empty = EMPTY_REFUSE; | |
6806 | ||
a26f4a49 | 6807 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 6808 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 6809 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
6810 | |
6811 | if (arg_can_factory_reset) | |
a26f4a49 LP |
6812 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
6813 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
6814 | * open things strictly read-only. */ | |
6815 | else if (dry_run >= 0) | |
6816 | arg_dry_run = dry_run; | |
6817 | ||
6c05395e LP |
6818 | /* Disable pager once we are not just reviewing, but doing things. */ |
6819 | if (!arg_dry_run) | |
6820 | arg_pager_flags |= PAGER_DISABLE; | |
6821 | ||
170c9823 | 6822 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
6823 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6824 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 6825 | |
252d6267 LP |
6826 | if (arg_image && arg_root) |
6827 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
6828 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
6829 | |
6830 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
6831 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
6832 | * is vendor-supplied but the root fs formatted on first boot. */ | |
6833 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
6834 | if (r <= 0) { | |
6835 | if (r < 0 && r != -ENOENT) | |
6836 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
6837 | ||
6838 | arg_root = strdup("/sysroot"); | |
6839 | } else | |
6840 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
6841 | if (!arg_root) |
6842 | return log_oom(); | |
6843 | } | |
6844 | ||
e594a3b1 | 6845 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 6846 | |
252d6267 | 6847 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
6848 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6849 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
6850 | ||
4cee8333 DDM |
6851 | if (arg_split && !arg_node) |
6852 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6853 | "A path to a loopback file must be specified when --split is used."); | |
6854 | ||
9e437994 | 6855 | if (arg_tpm2_public_key_pcr_mask_use_default && arg_tpm2_public_key) |
2099cd62 | 6856 | arg_tpm2_public_key_pcr_mask = INDEX_TO_MASK(uint32_t, TPM2_PCR_KERNEL_BOOT); |
9e437994 DS |
6857 | |
6858 | if (arg_tpm2_hash_pcr_values_use_default && !GREEDY_REALLOC_APPEND( | |
6859 | arg_tpm2_hash_pcr_values, | |
6860 | arg_tpm2_n_hash_pcr_values, | |
6861 | &TPM2_PCR_VALUE_MAKE(TPM2_PCR_INDEX_DEFAULT, /* hash= */ 0, /* value= */ {}), | |
6862 | 1)) | |
6863 | return log_oom(); | |
889914ef | 6864 | |
a26d463d DDM |
6865 | if (arg_pretty < 0 && isatty(STDOUT_FILENO)) |
6866 | arg_pretty = true; | |
6867 | ||
9786dfe6 DDM |
6868 | if (arg_architecture >= 0) { |
6869 | FOREACH_ARRAY(p, arg_filter_partitions, arg_n_filter_partitions) | |
6870 | *p = gpt_partition_type_override_architecture(*p, arg_architecture); | |
6871 | ||
6872 | FOREACH_ARRAY(p, arg_defer_partitions, arg_n_defer_partitions) | |
6873 | *p = gpt_partition_type_override_architecture(*p, arg_architecture); | |
6874 | } | |
6875 | ||
e594a3b1 LP |
6876 | return 1; |
6877 | } | |
6878 | ||
6879 | static int parse_proc_cmdline_factory_reset(void) { | |
6880 | bool b; | |
6881 | int r; | |
6882 | ||
6883 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
6884 | return 0; | |
6885 | ||
6886 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
6887 | return 0; | |
6888 | ||
3787934b | 6889 | r = proc_cmdline_get_bool("systemd.factory_reset", /* flags = */ 0, &b); |
e594a3b1 LP |
6890 | if (r < 0) |
6891 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
6892 | if (r > 0) { | |
6893 | arg_factory_reset = b; | |
6894 | ||
6895 | if (b) | |
6896 | log_notice("Honouring factory reset requested via kernel command line."); | |
6897 | } | |
6898 | ||
6899 | return 0; | |
6900 | } | |
6901 | ||
6902 | static int parse_efi_variable_factory_reset(void) { | |
6903 | _cleanup_free_ char *value = NULL; | |
6904 | int r; | |
6905 | ||
6906 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
6907 | return 0; | |
6908 | ||
6909 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
6910 | return 0; | |
6911 | ||
e6f055cb | 6912 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
6ce691c3 DL |
6913 | if (r < 0) { |
6914 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) | |
6915 | return 0; | |
e594a3b1 | 6916 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); |
6ce691c3 | 6917 | } |
e594a3b1 LP |
6918 | |
6919 | r = parse_boolean(value); | |
6920 | if (r < 0) | |
6921 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
6922 | ||
6923 | arg_factory_reset = r; | |
6924 | if (r) | |
111a3aae | 6925 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
6926 | |
6927 | return 0; | |
6928 | } | |
6929 | ||
6930 | static int remove_efi_variable_factory_reset(void) { | |
6931 | int r; | |
6932 | ||
e6f055cb | 6933 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
6ce691c3 DL |
6934 | if (r < 0) { |
6935 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) | |
6936 | return 0; | |
e594a3b1 | 6937 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); |
6ce691c3 | 6938 | } |
e594a3b1 LP |
6939 | |
6940 | log_info("Successfully unset EFI variable FactoryReset."); | |
6941 | return 0; | |
6942 | } | |
6943 | ||
252d6267 LP |
6944 | static int acquire_root_devno( |
6945 | const char *p, | |
6946 | const char *root, | |
6947 | int mode, | |
6948 | char **ret, | |
6949 | int *ret_fd) { | |
6950 | ||
37734dc6 | 6951 | _cleanup_free_ char *found_path = NULL, *node = NULL; |
252d6267 | 6952 | dev_t devno, fd_devno = MODE_INVALID; |
254d1313 | 6953 | _cleanup_close_ int fd = -EBADF; |
e594a3b1 | 6954 | struct stat st; |
e594a3b1 LP |
6955 | int r; |
6956 | ||
a26f4a49 LP |
6957 | assert(p); |
6958 | assert(ret); | |
6959 | assert(ret_fd); | |
6960 | ||
f461a28d | 6961 | fd = chase_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 6962 | if (fd < 0) |
252d6267 | 6963 | return fd; |
e594a3b1 LP |
6964 | |
6965 | if (fstat(fd, &st) < 0) | |
6966 | return -errno; | |
6967 | ||
6968 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 6969 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 6970 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
6971 | return 0; |
6972 | } | |
6973 | ||
252d6267 LP |
6974 | if (S_ISBLK(st.st_mode)) { |
6975 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 6976 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
6977 | if (root) |
6978 | return -EPERM; | |
6979 | ||
a26f4a49 | 6980 | fd_devno = devno = st.st_rdev; |
252d6267 | 6981 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
6982 | |
6983 | devno = st.st_dev; | |
a26f4a49 | 6984 | if (major(devno) == 0) { |
e594a3b1 LP |
6985 | r = btrfs_get_block_device_fd(fd, &devno); |
6986 | if (r == -ENOTTY) /* not btrfs */ | |
6987 | return -ENODEV; | |
6988 | if (r < 0) | |
6989 | return r; | |
6990 | } | |
e594a3b1 LP |
6991 | } else |
6992 | return -ENOTBLK; | |
6993 | ||
6994 | /* From dm-crypt to backing partition */ | |
6995 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
6996 | if (r == -ENOENT) |
6997 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
6998 | else if (r < 0) | |
e594a3b1 LP |
6999 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
7000 | ||
7001 | /* From partition to whole disk containing it */ | |
7002 | r = block_get_whole_disk(devno, &devno); | |
7003 | if (r < 0) | |
162392b7 | 7004 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 7005 | |
37734dc6 | 7006 | r = devname_from_devnum(S_IFBLK, devno, &node); |
a26f4a49 LP |
7007 | if (r < 0) |
7008 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
7009 | ||
6bbae9f8 | 7010 | /* Only if we still look at the same block device we can reuse the fd. Otherwise return an |
a26f4a49 | 7011 | * invalidated fd. */ |
37734dc6 YW |
7012 | if (fd_devno != MODE_INVALID && fd_devno == devno) { |
7013 | /* Tell udev not to interfere while we are processing the device */ | |
7014 | if (flock(fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
7015 | return log_error_errno(errno, "Failed to lock device '%s': %m", node); | |
7016 | ||
7017 | *ret_fd = TAKE_FD(fd); | |
7018 | } else | |
7019 | *ret_fd = -EBADF; | |
7020 | ||
7021 | *ret = TAKE_PTR(node); | |
a26f4a49 | 7022 | return 0; |
e594a3b1 LP |
7023 | } |
7024 | ||
cc751c75 | 7025 | static int find_root(Context *context) { |
54632d2e | 7026 | _cleanup_free_ char *device = NULL; |
5980d463 | 7027 | int r; |
e594a3b1 | 7028 | |
cc751c75 | 7029 | assert(context); |
a26f4a49 | 7030 | |
e594a3b1 | 7031 | if (arg_node) { |
a26f4a49 | 7032 | if (arg_empty == EMPTY_CREATE) { |
254d1313 | 7033 | _cleanup_close_ int fd = -EBADF; |
a26f4a49 LP |
7034 | _cleanup_free_ char *s = NULL; |
7035 | ||
7036 | s = strdup(arg_node); | |
7037 | if (!s) | |
7038 | return log_oom(); | |
7039 | ||
5332d7c6 | 7040 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
7041 | if (fd < 0) |
7042 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
7043 | ||
cc751c75 | 7044 | context->node = TAKE_PTR(s); |
db1d4e6b | 7045 | context->node_is_our_file = true; |
cc751c75 | 7046 | context->backing_fd = TAKE_FD(fd); |
a26f4a49 LP |
7047 | return 0; |
7048 | } | |
7049 | ||
252d6267 LP |
7050 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
7051 | * we'll take it relative to the host, not the image */ | |
cc751c75 | 7052 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
67f0ac8c LP |
7053 | if (r == -EUCLEAN) |
7054 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 7055 | if (r < 0) |
aa2a74ad | 7056 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
7057 | |
7058 | return 0; | |
7059 | } | |
7060 | ||
a26f4a49 LP |
7061 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
7062 | ||
54632d2e KK |
7063 | /* If the root mount has been replaced by some form of volatile file system (overlayfs), the |
7064 | * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that | |
7065 | * here. */ | |
7066 | r = readlink_malloc("/run/systemd/volatile-root", &device); | |
7067 | if (r == -ENOENT) { /* volatile-root not found */ | |
7068 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The | |
7069 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
7070 | * (think: volatile setups) */ | |
e594a3b1 | 7071 | |
54632d2e | 7072 | FOREACH_STRING(p, "/", "/usr") { |
e594a3b1 | 7073 | |
cc751c75 DDM |
7074 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, &context->node, |
7075 | &context->backing_fd); | |
54632d2e KK |
7076 | if (r < 0) { |
7077 | if (r == -EUCLEAN) | |
7078 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
7079 | if (r != -ENODEV) | |
7080 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
7081 | } else | |
7082 | return 0; | |
7083 | } | |
7084 | } else if (r < 0) | |
7085 | return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m"); | |
7086 | else { | |
cc751c75 | 7087 | r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
54632d2e KK |
7088 | if (r == -EUCLEAN) |
7089 | return btrfs_log_dev_root(LOG_ERR, r, device); | |
7090 | if (r < 0) | |
7091 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device); | |
7092 | ||
7093 | return 0; | |
e594a3b1 LP |
7094 | } |
7095 | ||
7096 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
7097 | } | |
7098 | ||
81dde3d8 | 7099 | static int resize_pt(int fd, uint64_t sector_size) { |
f9b3afae LP |
7100 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
7101 | int r; | |
7102 | ||
7103 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
7104 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
7105 | * immediately write it again, with no changes. */ | |
7106 | ||
fd9fe57a | 7107 | r = fdisk_new_context_at(fd, /* path= */ NULL, /* read_only= */ false, sector_size, &c); |
f9b3afae | 7108 | if (r < 0) |
ddb6eeaf | 7109 | return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
7110 | |
7111 | r = fdisk_has_label(c); | |
7112 | if (r < 0) | |
ddb6eeaf | 7113 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
7114 | if (r == 0) { |
7115 | log_debug("Not resizing partition table, as there currently is none."); | |
7116 | return 0; | |
7117 | } | |
7118 | ||
7119 | r = fdisk_write_disklabel(c); | |
7120 | if (r < 0) | |
7121 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
7122 | ||
7123 | log_info("Resized partition table."); | |
7124 | return 1; | |
7125 | } | |
7126 | ||
252d6267 LP |
7127 | static int resize_backing_fd( |
7128 | const char *node, /* The primary way we access the disk image to operate on */ | |
7129 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
7130 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
81dde3d8 LP |
7131 | LoopDevice *loop_device, |
7132 | uint64_t sector_size) { | |
252d6267 | 7133 | |
254d1313 | 7134 | _cleanup_close_ int writable_fd = -EBADF; |
252d6267 | 7135 | uint64_t current_size; |
a26f4a49 LP |
7136 | struct stat st; |
7137 | int r; | |
7138 | ||
7139 | assert(node); | |
7140 | assert(fd); | |
7141 | ||
7142 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
7143 | return 0; | |
7144 | ||
7145 | if (*fd < 0) { | |
7146 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
7147 | * keep a reference to the file we can pass around. */ | |
7148 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
7149 | if (*fd < 0) | |
7150 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
7151 | } | |
7152 | ||
7153 | if (fstat(*fd, &st) < 0) | |
7154 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
7155 | ||
252d6267 LP |
7156 | if (S_ISBLK(st.st_mode)) { |
7157 | if (!backing_file) | |
7158 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
7159 | ||
7160 | assert(loop_device); | |
a26f4a49 | 7161 | |
252d6267 LP |
7162 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
7163 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
7164 | } else { | |
7165 | r = stat_verify_regular(&st); | |
7166 | if (r < 0) | |
7167 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
7168 | ||
7169 | assert(!backing_file); | |
7170 | assert(!loop_device); | |
7171 | current_size = st.st_size; | |
7172 | } | |
7173 | ||
252d6267 | 7174 | if (current_size >= arg_size) { |
2b59bf51 ZJS |
7175 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", |
7176 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 LP |
7177 | return 0; |
7178 | } | |
7179 | ||
252d6267 LP |
7180 | if (S_ISBLK(st.st_mode)) { |
7181 | assert(backing_file); | |
7182 | ||
7183 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
7184 | * backing file, hence let's do that. */ | |
7185 | ||
7186 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
7187 | if (writable_fd < 0) | |
7188 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
7189 | ||
7190 | if (fstat(writable_fd, &st) < 0) | |
7191 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
7192 | ||
7193 | r = stat_verify_regular(&st); | |
7194 | if (r < 0) | |
7195 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
7196 | ||
7197 | if ((uint64_t) st.st_size != current_size) | |
7198 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2b59bf51 ZJS |
7199 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", |
7200 | node, backing_file); | |
252d6267 LP |
7201 | } else { |
7202 | assert(S_ISREG(st.st_mode)); | |
7203 | assert(!backing_file); | |
a26f4a49 | 7204 | |
252d6267 LP |
7205 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
7206 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
7207 | * as fdisk can't accept it anyway. */ | |
7208 | ||
7209 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
7210 | if (writable_fd < 0) | |
7211 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
7212 | } | |
a26f4a49 LP |
7213 | |
7214 | if (!arg_discard) { | |
7215 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
7216 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
7217 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
2b59bf51 | 7218 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 LP |
7219 | |
7220 | /* Fallback to truncation, if fallocate() is not supported. */ | |
7221 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
7222 | } else { | |
252d6267 | 7223 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 7224 | log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node); |
a26f4a49 | 7225 | else |
2b59bf51 ZJS |
7226 | log_info("File '%s' grown from %s to %s by allocation.", |
7227 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 | 7228 | |
252d6267 | 7229 | goto done; |
a26f4a49 LP |
7230 | } |
7231 | } | |
7232 | ||
7233 | if (ftruncate(writable_fd, arg_size) < 0) | |
7234 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
2b59bf51 | 7235 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 | 7236 | |
252d6267 | 7237 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 7238 | log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size)); |
252d6267 | 7239 | else |
2b59bf51 ZJS |
7240 | log_info("File '%s' grown from %s to %s by truncation.", |
7241 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
252d6267 LP |
7242 | |
7243 | done: | |
81dde3d8 | 7244 | r = resize_pt(writable_fd, sector_size); |
f9b3afae LP |
7245 | if (r < 0) |
7246 | return r; | |
7247 | ||
252d6267 LP |
7248 | if (loop_device) { |
7249 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
7250 | if (r < 0) | |
7251 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
7252 | } | |
a26f4a49 LP |
7253 | |
7254 | return 1; | |
7255 | } | |
7256 | ||
170c9823 | 7257 | static int determine_auto_size(Context *c) { |
994b3031 | 7258 | uint64_t sum; |
170c9823 | 7259 | |
ac33e147 | 7260 | assert(c); |
170c9823 | 7261 | |
994b3031 LP |
7262 | sum = round_up_size(GPT_METADATA_SIZE, 4096); |
7263 | ||
170c9823 LP |
7264 | LIST_FOREACH(partitions, p, c->partitions) { |
7265 | uint64_t m; | |
7266 | ||
7267 | if (p->dropped) | |
7268 | continue; | |
7269 | ||
994b3031 | 7270 | m = partition_min_size_with_padding(c, p); |
170c9823 LP |
7271 | if (m > UINT64_MAX - sum) |
7272 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
7273 | ||
7274 | sum += m; | |
7275 | } | |
7276 | ||
2b59bf51 ZJS |
7277 | if (c->total != UINT64_MAX) |
7278 | /* Image already allocated? Then show its size. */ | |
7279 | log_info("Automatically determined minimal disk image size as %s, current image size is %s.", | |
7280 | FORMAT_BYTES(sum), FORMAT_BYTES(c->total)); | |
7281 | else | |
7282 | /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */ | |
7283 | log_info("Automatically determined minimal disk image size as %s.", | |
7284 | FORMAT_BYTES(sum)); | |
170c9823 LP |
7285 | |
7286 | arg_size = sum; | |
7287 | return 0; | |
7288 | } | |
7289 | ||
e594a3b1 | 7290 | static int run(int argc, char *argv[]) { |
252d6267 | 7291 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
a4b3e942 | 7292 | _cleanup_(umount_and_freep) char *mounted_dir = NULL; |
e594a3b1 | 7293 | _cleanup_(context_freep) Context* context = NULL; |
cc751c75 | 7294 | bool node_is_our_loop = false; |
e594a3b1 LP |
7295 | int r; |
7296 | ||
7297 | log_show_color(true); | |
7298 | log_parse_environment(); | |
7299 | log_open(); | |
7300 | ||
e594a3b1 LP |
7301 | r = parse_argv(argc, argv); |
7302 | if (r <= 0) | |
7303 | return r; | |
7304 | ||
7305 | r = parse_proc_cmdline_factory_reset(); | |
7306 | if (r < 0) | |
7307 | return r; | |
7308 | ||
7309 | r = parse_efi_variable_factory_reset(); | |
7310 | if (r < 0) | |
7311 | return r; | |
7312 | ||
30f19400 LP |
7313 | #if HAVE_LIBCRYPTSETUP |
7314 | cryptsetup_enable_logging(NULL); | |
7315 | #endif | |
7316 | ||
252d6267 LP |
7317 | if (arg_image) { |
7318 | assert(!arg_root); | |
7319 | ||
7320 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
7321 | * systems */ | |
7322 | r = mount_image_privately_interactively( | |
7323 | arg_image, | |
84be0c71 | 7324 | arg_image_policy, |
252d6267 LP |
7325 | DISSECT_IMAGE_MOUNT_READ_ONLY | |
7326 | (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) */ | |
7327 | DISSECT_IMAGE_GPT_ONLY | | |
7328 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
7329 | DISSECT_IMAGE_USR_NO_ROOT | | |
7330 | DISSECT_IMAGE_REQUIRE_ROOT, | |
7331 | &mounted_dir, | |
a133d2c3 | 7332 | /* ret_dir_fd= */ NULL, |
e330f97a | 7333 | &loop_device); |
252d6267 LP |
7334 | if (r < 0) |
7335 | return r; | |
7336 | ||
7337 | arg_root = strdup(mounted_dir); | |
7338 | if (!arg_root) | |
7339 | return log_oom(); | |
7340 | ||
7341 | if (!arg_node) { | |
7342 | arg_node = strdup(loop_device->node); | |
7343 | if (!arg_node) | |
7344 | return log_oom(); | |
7345 | ||
3d62af7d | 7346 | /* Remember that the device we are about to manipulate is actually the one we |
252d6267 LP |
7347 | * allocated here, and thus to increase its backing file we know what to do */ |
7348 | node_is_our_loop = true; | |
7349 | } | |
7350 | } | |
7351 | ||
e594a3b1 LP |
7352 | context = context_new(arg_seed); |
7353 | if (!context) | |
7354 | return log_oom(); | |
7355 | ||
1e46985a DDM |
7356 | r = context_copy_from(context); |
7357 | if (r < 0) | |
7358 | return r; | |
7359 | ||
224c853f RP |
7360 | strv_uniq(arg_definitions); |
7361 | ||
4b047310 | 7362 | r = context_read_definitions(context); |
e594a3b1 LP |
7363 | if (r < 0) |
7364 | return r; | |
7365 | ||
cc751c75 | 7366 | r = find_root(context); |
021b0ff4 DDM |
7367 | if (r == -ENODEV) |
7368 | return 76; /* Special return value which means "Root block device not found, so not doing | |
7369 | * anything". This isn't really an error when called at boot. */ | |
0ae5ffe0 YW |
7370 | if (r < 0) |
7371 | return r; | |
7372 | ||
a26f4a49 | 7373 | if (arg_size != UINT64_MAX) { |
252d6267 | 7374 | r = resize_backing_fd( |
cc751c75 DDM |
7375 | context->node, |
7376 | &context->backing_fd, | |
252d6267 | 7377 | node_is_our_loop ? arg_image : NULL, |
81dde3d8 LP |
7378 | node_is_our_loop ? loop_device : NULL, |
7379 | context->sector_size); | |
a26f4a49 LP |
7380 | if (r < 0) |
7381 | return r; | |
7382 | } | |
7383 | ||
cc751c75 | 7384 | r = context_load_partition_table(context); |
e594a3b1 LP |
7385 | if (r == -EHWPOISON) |
7386 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
7387 | * really an error when called at boot. */ | |
7388 | if (r < 0) | |
7389 | return r; | |
cc751c75 | 7390 | context->from_scratch = r > 0; /* Starting from scratch */ |
e594a3b1 LP |
7391 | |
7392 | if (arg_can_factory_reset) { | |
7393 | r = context_can_factory_reset(context); | |
7394 | if (r < 0) | |
7395 | return r; | |
7396 | if (r == 0) | |
7397 | return EXIT_FAILURE; | |
7398 | ||
7399 | return 0; | |
7400 | } | |
7401 | ||
cc751c75 | 7402 | r = context_factory_reset(context); |
e594a3b1 LP |
7403 | if (r < 0) |
7404 | return r; | |
7405 | if (r > 0) { | |
7406 | /* We actually did a factory reset! */ | |
7407 | r = remove_efi_variable_factory_reset(); | |
7408 | if (r < 0) | |
7409 | return r; | |
7410 | ||
7411 | /* Reload the reduced partition table */ | |
7412 | context_unload_partition_table(context); | |
cc751c75 | 7413 | r = context_load_partition_table(context); |
e594a3b1 LP |
7414 | if (r < 0) |
7415 | return r; | |
7416 | } | |
7417 | ||
e594a3b1 LP |
7418 | r = context_read_seed(context, arg_root); |
7419 | if (r < 0) | |
7420 | return r; | |
7421 | ||
8bbbdfd7 DDM |
7422 | /* Make sure each partition has a unique UUID and unique label */ |
7423 | r = context_acquire_partition_uuids_and_labels(context); | |
7424 | if (r < 0) | |
7425 | return r; | |
7426 | ||
757bc2e4 | 7427 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
7428 | r = context_open_copy_block_paths( |
7429 | context, | |
7802194a | 7430 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
7431 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
7432 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
7433 | if (r < 0) |
7434 | return r; | |
7435 | ||
5eef7047 DDM |
7436 | r = context_minimize(context); |
7437 | if (r < 0) | |
7438 | return r; | |
7439 | ||
170c9823 LP |
7440 | if (arg_size_auto) { |
7441 | r = determine_auto_size(context); | |
7442 | if (r < 0) | |
7443 | return r; | |
7444 | ||
7445 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
7446 | context_unload_partition_table(context); | |
7447 | ||
ac33e147 | 7448 | assert(arg_size != UINT64_MAX); |
252d6267 | 7449 | r = resize_backing_fd( |
cc751c75 DDM |
7450 | context->node, |
7451 | &context->backing_fd, | |
252d6267 | 7452 | node_is_our_loop ? arg_image : NULL, |
81dde3d8 LP |
7453 | node_is_our_loop ? loop_device : NULL, |
7454 | context->sector_size); | |
170c9823 LP |
7455 | if (r < 0) |
7456 | return r; | |
7457 | ||
cc751c75 | 7458 | r = context_load_partition_table(context); |
170c9823 LP |
7459 | if (r < 0) |
7460 | return r; | |
7461 | } | |
7462 | ||
e594a3b1 LP |
7463 | /* First try to fit new partitions in, dropping by priority until it fits */ |
7464 | for (;;) { | |
14a4c4ed LP |
7465 | uint64_t largest_free_area; |
7466 | ||
7467 | if (context_allocate_partitions(context, &largest_free_area)) | |
e594a3b1 LP |
7468 | break; /* Success! */ |
7469 | ||
9ccceb9d | 7470 | if (!context_drop_or_foreignize_one_priority(context)) { |
d17db7b2 | 7471 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), |
14a4c4ed | 7472 | "Can't fit requested partitions into available free space (%s), refusing.", |
2b59bf51 | 7473 | FORMAT_BYTES(largest_free_area)); |
d17db7b2 LP |
7474 | determine_auto_size(context); |
7475 | return r; | |
7476 | } | |
e594a3b1 LP |
7477 | } |
7478 | ||
7479 | /* Now assign free space according to the weight logic */ | |
7480 | r = context_grow_partitions(context); | |
7481 | if (r < 0) | |
7482 | return r; | |
7483 | ||
0b7f574f | 7484 | /* Now calculate where each new partition gets placed */ |
e594a3b1 LP |
7485 | context_place_partitions(context); |
7486 | ||
cc751c75 | 7487 | (void) context_dump(context, /*late=*/ false); |
a26d463d | 7488 | |
cc751c75 | 7489 | r = context_write_partition_table(context); |
e594a3b1 LP |
7490 | if (r < 0) |
7491 | return r; | |
7492 | ||
4cee8333 DDM |
7493 | r = context_split(context); |
7494 | if (r < 0) | |
7495 | return r; | |
7496 | ||
cc751c75 | 7497 | (void) context_dump(context, /*late=*/ true); |
b5b7879a | 7498 | |
db1d4e6b DDM |
7499 | context->node = mfree(context->node); |
7500 | ||
a2d7c42e DDM |
7501 | LIST_FOREACH(partitions, p, context->partitions) |
7502 | p->split_path = mfree(p->split_path); | |
b5b7879a | 7503 | |
e594a3b1 LP |
7504 | return 0; |
7505 | } | |
7506 | ||
7507 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |