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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
e594a3b1 LP |
2 | |
3 | #if HAVE_VALGRIND_MEMCHECK_H | |
4 | #include <valgrind/memcheck.h> | |
5 | #endif | |
6 | ||
7 | #include <fcntl.h> | |
8 | #include <getopt.h> | |
e594a3b1 LP |
9 | #include <linux/fs.h> |
10 | #include <linux/loop.h> | |
11 | #include <sys/file.h> | |
12 | #include <sys/ioctl.h> | |
13 | #include <sys/stat.h> | |
14 | ||
1a037ba2 | 15 | #include "sd-device.h" |
e594a3b1 LP |
16 | #include "sd-id128.h" |
17 | ||
18 | #include "alloc-util.h" | |
19 | #include "blkid-util.h" | |
20 | #include "blockdev-util.h" | |
21 | #include "btrfs-util.h" | |
d6b4d1c7 | 22 | #include "build.h" |
f461a28d | 23 | #include "chase.h" |
e594a3b1 LP |
24 | #include "conf-files.h" |
25 | #include "conf-parser.h" | |
28db6fbf | 26 | #include "constants.h" |
1e2f3230 | 27 | #include "cryptsetup-util.h" |
ca822829 | 28 | #include "device-util.h" |
7176f06c | 29 | #include "devnum-util.h" |
5c08da58 | 30 | #include "dirent-util.h" |
e594a3b1 LP |
31 | #include "efivars.h" |
32 | #include "errno-util.h" | |
33 | #include "fd-util.h" | |
4dc07c3a | 34 | #include "fdisk-util.h" |
b9df3536 | 35 | #include "fileio.h" |
e594a3b1 LP |
36 | #include "format-table.h" |
37 | #include "format-util.h" | |
38 | #include "fs-util.h" | |
d8e32c47 | 39 | #include "glyph-util.h" |
e594a3b1 | 40 | #include "gpt.h" |
889914ef | 41 | #include "hexdecoct.h" |
ade99252 | 42 | #include "hmac.h" |
e594a3b1 | 43 | #include "id128-util.h" |
baa6a42d | 44 | #include "initrd-util.h" |
b456191d | 45 | #include "io-util.h" |
a015fbe7 | 46 | #include "json.h" |
e594a3b1 | 47 | #include "list.h" |
53171c04 | 48 | #include "loop-util.h" |
e594a3b1 | 49 | #include "main-func.h" |
8a794850 | 50 | #include "mkdir.h" |
53171c04 | 51 | #include "mkfs-util.h" |
8a794850 | 52 | #include "mount-util.h" |
5c08da58 | 53 | #include "mountpoint-util.h" |
c0fad2d9 | 54 | #include "nulstr-util.h" |
b456191d | 55 | #include "openssl-util.h" |
614b022c | 56 | #include "parse-argument.h" |
c3eaba2d | 57 | #include "parse-helpers.h" |
e594a3b1 LP |
58 | #include "pretty-print.h" |
59 | #include "proc-cmdline.h" | |
8a794850 | 60 | #include "process-util.h" |
b9df3536 | 61 | #include "random-util.h" |
170c9823 | 62 | #include "resize-fs.h" |
95bfd3cd | 63 | #include "rm-rf.h" |
e594a3b1 | 64 | #include "sort-util.h" |
e031166e | 65 | #include "specifier.h" |
e594a3b1 | 66 | #include "stdio-util.h" |
889914ef | 67 | #include "string-table.h" |
e594a3b1 LP |
68 | #include "string-util.h" |
69 | #include "strv.h" | |
bf819d3a | 70 | #include "sync-util.h" |
95bfd3cd | 71 | #include "tmpfile-util.h" |
e594a3b1 | 72 | #include "terminal-util.h" |
02ef97cd | 73 | #include "tpm-pcr.h" |
889914ef | 74 | #include "tpm2-util.h" |
8a794850 | 75 | #include "user-util.h" |
e594a3b1 LP |
76 | #include "utf8.h" |
77 | ||
fb08381c | 78 | /* If not configured otherwise use a minimal partition size of 10M */ |
b262cbe8 | 79 | #define DEFAULT_MIN_SIZE (10ULL*1024ULL*1024ULL) |
fb08381c LP |
80 | |
81 | /* Hard lower limit for new partition sizes */ | |
b262cbe8 | 82 | #define HARD_MIN_SIZE 4096ULL |
fb08381c | 83 | |
b456191d | 84 | /* We know up front we're never going to put more than this in a verity sig partition. */ |
b262cbe8 | 85 | #define VERITY_SIG_SIZE (HARD_MIN_SIZE*4ULL) |
b456191d | 86 | |
69e3234d | 87 | /* libfdisk takes off slightly more than 1M of the disk size when creating a GPT disk label */ |
b262cbe8 | 88 | #define GPT_METADATA_SIZE (1044ULL*1024ULL) |
170c9823 LP |
89 | |
90 | /* LUKS2 takes off 16M of the partition size with its metadata by default */ | |
b262cbe8 | 91 | #define LUKS2_METADATA_SIZE (16ULL*1024ULL*1024ULL) |
170c9823 | 92 | |
48a09a8f DDM |
93 | /* To do LUKS2 offline encryption, we need to keep some extra free space at the end of the partition. */ |
94 | #define LUKS2_METADATA_KEEP_FREE (LUKS2_METADATA_SIZE*2ULL) | |
95 | ||
98e0456e DDM |
96 | /* LUKS2 volume key size. */ |
97 | #define VOLUME_KEY_SIZE (512ULL/8ULL) | |
98 | ||
e57b7020 DDM |
99 | #define APIVFS_TMP_DIRS_NULSTR "proc\0sys\0dev\0tmp\0run\0var/tmp\0" |
100 | ||
e594a3b1 LP |
101 | /* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks |
102 | * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B | |
103 | * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll | |
104 | * waste 3K per partition, which is probably fine. */ | |
105 | ||
106 | static enum { | |
107 | EMPTY_REFUSE, /* refuse empty disks, never create a partition table */ | |
108 | EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */ | |
109 | EMPTY_REQUIRE, /* require an empty disk, create a partition table */ | |
110 | EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */ | |
a26f4a49 | 111 | EMPTY_CREATE, /* create disk as loopback file, create a partition table always */ |
e594a3b1 LP |
112 | } arg_empty = EMPTY_REFUSE; |
113 | ||
53538e33 | 114 | typedef enum FilterPartitionType { |
81d1098b DDM |
115 | FILTER_PARTITIONS_NONE, |
116 | FILTER_PARTITIONS_EXCLUDE, | |
117 | FILTER_PARTITIONS_INCLUDE, | |
118 | _FILTER_PARTITIONS_MAX, | |
119 | _FILTER_PARTITIONS_INVALID = -EINVAL, | |
120 | } FilterPartitionsType; | |
121 | ||
e594a3b1 LP |
122 | static bool arg_dry_run = true; |
123 | static const char *arg_node = NULL; | |
124 | static char *arg_root = NULL; | |
252d6267 | 125 | static char *arg_image = NULL; |
224c853f | 126 | static char **arg_definitions = NULL; |
e594a3b1 LP |
127 | static bool arg_discard = true; |
128 | static bool arg_can_factory_reset = false; | |
129 | static int arg_factory_reset = -1; | |
130 | static sd_id128_t arg_seed = SD_ID128_NULL; | |
131 | static bool arg_randomize = false; | |
132 | static int arg_pretty = -1; | |
a26f4a49 | 133 | static uint64_t arg_size = UINT64_MAX; |
170c9823 | 134 | static bool arg_size_auto = false; |
6a01ea4a | 135 | static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; |
896e678b LP |
136 | static PagerFlags arg_pager_flags = 0; |
137 | static bool arg_legend = true; | |
b9df3536 LP |
138 | static void *arg_key = NULL; |
139 | static size_t arg_key_size = 0; | |
b456191d DDM |
140 | static EVP_PKEY *arg_private_key = NULL; |
141 | static X509 *arg_certificate = NULL; | |
889914ef LP |
142 | static char *arg_tpm2_device = NULL; |
143 | static uint32_t arg_tpm2_pcr_mask = UINT32_MAX; | |
02ef97cd LP |
144 | static char *arg_tpm2_public_key = NULL; |
145 | static uint32_t arg_tpm2_public_key_pcr_mask = UINT32_MAX; | |
4cee8333 | 146 | static bool arg_split = false; |
9786dfe6 | 147 | static GptPartitionType *arg_filter_partitions = NULL; |
d989dd76 | 148 | static size_t arg_n_filter_partitions = 0; |
81d1098b | 149 | static FilterPartitionsType arg_filter_partitions_type = FILTER_PARTITIONS_NONE; |
9786dfe6 | 150 | static GptPartitionType *arg_defer_partitions = NULL; |
8275334b | 151 | static size_t arg_n_defer_partitions = 0; |
e1878ef7 | 152 | static uint64_t arg_sector_size = 0; |
84be0c71 | 153 | static ImagePolicy *arg_image_policy = NULL; |
9786dfe6 | 154 | static Architecture arg_architecture = _ARCHITECTURE_INVALID; |
fc10b158 | 155 | static int arg_offline = -1; |
e594a3b1 LP |
156 | |
157 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 158 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
224c853f | 159 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep); |
b9df3536 | 160 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
b456191d DDM |
161 | STATIC_DESTRUCTOR_REGISTER(arg_private_key, EVP_PKEY_freep); |
162 | STATIC_DESTRUCTOR_REGISTER(arg_certificate, X509_freep); | |
889914ef | 163 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
02ef97cd | 164 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep); |
81d1098b | 165 | STATIC_DESTRUCTOR_REGISTER(arg_filter_partitions, freep); |
84be0c71 | 166 | STATIC_DESTRUCTOR_REGISTER(arg_image_policy, image_policy_freep); |
e594a3b1 | 167 | |
e594a3b1 | 168 | typedef struct FreeArea FreeArea; |
e594a3b1 | 169 | |
889914ef LP |
170 | typedef enum EncryptMode { |
171 | ENCRYPT_OFF, | |
172 | ENCRYPT_KEY_FILE, | |
173 | ENCRYPT_TPM2, | |
174 | ENCRYPT_KEY_FILE_TPM2, | |
175 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 176 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
177 | } EncryptMode; |
178 | ||
b5b7879a DDM |
179 | typedef enum VerityMode { |
180 | VERITY_OFF, | |
181 | VERITY_DATA, | |
182 | VERITY_HASH, | |
b456191d | 183 | VERITY_SIG, |
b5b7879a DDM |
184 | _VERITY_MODE_MAX, |
185 | _VERITY_MODE_INVALID = -EINVAL, | |
186 | } VerityMode; | |
187 | ||
5c33b686 DDM |
188 | typedef enum MinimizeMode { |
189 | MINIMIZE_OFF, | |
190 | MINIMIZE_BEST, | |
191 | MINIMIZE_GUESS, | |
192 | _MINIMIZE_MODE_MAX, | |
193 | _MINIMIZE_MODE_INVALID = -EINVAL, | |
194 | } MinimizeMode; | |
195 | ||
448cfb7f | 196 | typedef struct Partition { |
e594a3b1 | 197 | char *definition_path; |
39fc0174 | 198 | char **drop_in_files; |
e594a3b1 | 199 | |
22e932f4 | 200 | GptPartitionType type; |
e594a3b1 | 201 | sd_id128_t current_uuid, new_uuid; |
11749b61 | 202 | bool new_uuid_is_set; |
e594a3b1 | 203 | char *current_label, *new_label; |
15cad3a2 | 204 | sd_id128_t fs_uuid, luks_uuid; |
e594a3b1 LP |
205 | |
206 | bool dropped; | |
207 | bool factory_reset; | |
208 | int32_t priority; | |
209 | ||
210 | uint32_t weight, padding_weight; | |
211 | ||
212 | uint64_t current_size, new_size; | |
213 | uint64_t size_min, size_max; | |
214 | ||
215 | uint64_t current_padding, new_padding; | |
216 | uint64_t padding_min, padding_max; | |
217 | ||
218 | uint64_t partno; | |
219 | uint64_t offset; | |
220 | ||
221 | struct fdisk_partition *current_partition; | |
222 | struct fdisk_partition *new_partition; | |
223 | FreeArea *padding_area; | |
224 | FreeArea *allocated_to_area; | |
225 | ||
757bc2e4 | 226 | char *copy_blocks_path; |
7d07030e | 227 | bool copy_blocks_path_is_our_file; |
5c08da58 | 228 | bool copy_blocks_auto; |
585c5c75 | 229 | const char *copy_blocks_root; |
757bc2e4 LP |
230 | int copy_blocks_fd; |
231 | uint64_t copy_blocks_size; | |
232 | ||
53171c04 | 233 | char *format; |
8a794850 | 234 | char **copy_files; |
600bf76c DDM |
235 | char **exclude_files_source; |
236 | char **exclude_files_target; | |
d83d8048 | 237 | char **make_directories; |
889914ef | 238 | EncryptMode encrypt; |
b5b7879a DDM |
239 | VerityMode verity; |
240 | char *verity_match_key; | |
5c33b686 | 241 | MinimizeMode minimize; |
53171c04 | 242 | |
e73309c5 | 243 | uint64_t gpt_flags; |
ff0771bf | 244 | int no_auto; |
e73309c5 | 245 | int read_only; |
1c41c1dc | 246 | int growfs; |
e73309c5 | 247 | |
b5b7879a DDM |
248 | uint8_t *roothash; |
249 | size_t roothash_size; | |
250 | ||
4cee8333 | 251 | char *split_name_format; |
62108348 | 252 | char *split_path; |
4cee8333 | 253 | |
448cfb7f | 254 | struct Partition *siblings[_VERITY_MODE_MAX]; |
b5b7879a | 255 | |
448cfb7f DDM |
256 | LIST_FIELDS(struct Partition, partitions); |
257 | } Partition; | |
e594a3b1 LP |
258 | |
259 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
260 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
261 | ||
262 | struct FreeArea { | |
263 | Partition *after; | |
264 | uint64_t size; | |
265 | uint64_t allocated; | |
266 | }; | |
267 | ||
448cfb7f | 268 | typedef struct Context { |
e594a3b1 LP |
269 | LIST_HEAD(Partition, partitions); |
270 | size_t n_partitions; | |
271 | ||
272 | FreeArea **free_areas; | |
319a4f4b | 273 | size_t n_free_areas; |
e594a3b1 LP |
274 | |
275 | uint64_t start, end, total; | |
276 | ||
277 | struct fdisk_context *fdisk_context; | |
994b3031 LP |
278 | uint64_t sector_size; |
279 | uint64_t grain_size; | |
e594a3b1 LP |
280 | |
281 | sd_id128_t seed; | |
cc751c75 DDM |
282 | |
283 | char *node; | |
db1d4e6b | 284 | bool node_is_our_file; |
cc751c75 DDM |
285 | int backing_fd; |
286 | ||
287 | bool from_scratch; | |
448cfb7f | 288 | } Context; |
e594a3b1 | 289 | |
889914ef LP |
290 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
291 | [ENCRYPT_OFF] = "off", | |
292 | [ENCRYPT_KEY_FILE] = "key-file", | |
293 | [ENCRYPT_TPM2] = "tpm2", | |
294 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
295 | }; | |
296 | ||
b5b7879a DDM |
297 | static const char *verity_mode_table[_VERITY_MODE_MAX] = { |
298 | [VERITY_OFF] = "off", | |
299 | [VERITY_DATA] = "data", | |
300 | [VERITY_HASH] = "hash", | |
b456191d | 301 | [VERITY_SIG] = "signature", |
b5b7879a DDM |
302 | }; |
303 | ||
5c33b686 DDM |
304 | static const char *minimize_mode_table[_MINIMIZE_MODE_MAX] = { |
305 | [MINIMIZE_OFF] = "off", | |
306 | [MINIMIZE_BEST] = "best", | |
307 | [MINIMIZE_GUESS] = "guess", | |
308 | }; | |
309 | ||
2709d029 | 310 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); |
86bebe38 | 311 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode); |
5c33b686 | 312 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(minimize_mode, MinimizeMode, MINIMIZE_BEST); |
889914ef | 313 | |
e594a3b1 LP |
314 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
315 | return (v / p) * p; | |
316 | } | |
317 | ||
318 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
319 | ||
320 | v = DIV_ROUND_UP(v, p); | |
321 | ||
322 | if (v > UINT64_MAX / p) | |
323 | return UINT64_MAX; /* overflow */ | |
324 | ||
325 | return v * p; | |
326 | } | |
327 | ||
328 | static Partition *partition_new(void) { | |
329 | Partition *p; | |
330 | ||
331 | p = new(Partition, 1); | |
332 | if (!p) | |
333 | return NULL; | |
334 | ||
335 | *p = (Partition) { | |
336 | .weight = 1000, | |
337 | .padding_weight = 0, | |
338 | .current_size = UINT64_MAX, | |
339 | .new_size = UINT64_MAX, | |
340 | .size_min = UINT64_MAX, | |
341 | .size_max = UINT64_MAX, | |
342 | .current_padding = UINT64_MAX, | |
343 | .new_padding = UINT64_MAX, | |
344 | .padding_min = UINT64_MAX, | |
345 | .padding_max = UINT64_MAX, | |
346 | .partno = UINT64_MAX, | |
347 | .offset = UINT64_MAX, | |
254d1313 | 348 | .copy_blocks_fd = -EBADF, |
757bc2e4 | 349 | .copy_blocks_size = UINT64_MAX, |
ff0771bf | 350 | .no_auto = -1, |
e73309c5 | 351 | .read_only = -1, |
1c41c1dc | 352 | .growfs = -1, |
e594a3b1 LP |
353 | }; |
354 | ||
355 | return p; | |
356 | } | |
357 | ||
358 | static Partition* partition_free(Partition *p) { | |
359 | if (!p) | |
360 | return NULL; | |
361 | ||
362 | free(p->current_label); | |
363 | free(p->new_label); | |
364 | free(p->definition_path); | |
39fc0174 | 365 | strv_free(p->drop_in_files); |
e594a3b1 LP |
366 | |
367 | if (p->current_partition) | |
368 | fdisk_unref_partition(p->current_partition); | |
369 | if (p->new_partition) | |
370 | fdisk_unref_partition(p->new_partition); | |
371 | ||
7d07030e DDM |
372 | if (p->copy_blocks_path_is_our_file) |
373 | unlink_and_free(p->copy_blocks_path); | |
374 | else | |
375 | free(p->copy_blocks_path); | |
757bc2e4 LP |
376 | safe_close(p->copy_blocks_fd); |
377 | ||
53171c04 | 378 | free(p->format); |
8a794850 | 379 | strv_free(p->copy_files); |
600bf76c DDM |
380 | strv_free(p->exclude_files_source); |
381 | strv_free(p->exclude_files_target); | |
d83d8048 | 382 | strv_free(p->make_directories); |
b5b7879a DDM |
383 | free(p->verity_match_key); |
384 | ||
385 | free(p->roothash); | |
53171c04 | 386 | |
4cee8333 | 387 | free(p->split_name_format); |
a2d7c42e | 388 | unlink_and_free(p->split_path); |
4cee8333 | 389 | |
e594a3b1 LP |
390 | return mfree(p); |
391 | } | |
392 | ||
9ccceb9d YW |
393 | static void partition_foreignize(Partition *p) { |
394 | assert(p); | |
395 | assert(PARTITION_EXISTS(p)); | |
396 | ||
397 | /* Reset several parameters set through definition file to make the partition foreign. */ | |
398 | ||
9ccceb9d YW |
399 | p->definition_path = mfree(p->definition_path); |
400 | p->drop_in_files = strv_free(p->drop_in_files); | |
401 | ||
402 | p->copy_blocks_path = mfree(p->copy_blocks_path); | |
403 | p->copy_blocks_fd = safe_close(p->copy_blocks_fd); | |
585c5c75 | 404 | p->copy_blocks_root = NULL; |
9ccceb9d YW |
405 | |
406 | p->format = mfree(p->format); | |
407 | p->copy_files = strv_free(p->copy_files); | |
600bf76c DDM |
408 | p->exclude_files_source = strv_free(p->exclude_files_source); |
409 | p->exclude_files_target = strv_free(p->exclude_files_target); | |
9ccceb9d YW |
410 | p->make_directories = strv_free(p->make_directories); |
411 | p->verity_match_key = mfree(p->verity_match_key); | |
412 | ||
9ccceb9d YW |
413 | p->priority = 0; |
414 | p->weight = 1000; | |
415 | p->padding_weight = 0; | |
416 | p->size_min = UINT64_MAX; | |
417 | p->size_max = UINT64_MAX; | |
418 | p->padding_min = UINT64_MAX; | |
419 | p->padding_max = UINT64_MAX; | |
420 | p->no_auto = -1; | |
421 | p->read_only = -1; | |
422 | p->growfs = -1; | |
423 | p->verity = VERITY_OFF; | |
424 | } | |
425 | ||
7d505753 | 426 | static bool partition_exclude(const Partition *p) { |
81d1098b DDM |
427 | assert(p); |
428 | ||
429 | if (arg_filter_partitions_type == FILTER_PARTITIONS_NONE) | |
430 | return false; | |
431 | ||
d989dd76 | 432 | for (size_t i = 0; i < arg_n_filter_partitions; i++) |
9786dfe6 | 433 | if (sd_id128_equal(p->type.uuid, arg_filter_partitions[i].uuid)) |
81d1098b DDM |
434 | return arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE; |
435 | ||
436 | return arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE; | |
437 | } | |
438 | ||
8275334b | 439 | static bool partition_defer(const Partition *p) { |
7d505753 DDM |
440 | assert(p); |
441 | ||
8275334b | 442 | for (size_t i = 0; i < arg_n_defer_partitions; i++) |
9786dfe6 | 443 | if (sd_id128_equal(p->type.uuid, arg_defer_partitions[i].uuid)) |
7d505753 DDM |
444 | return true; |
445 | ||
446 | return false; | |
447 | } | |
448 | ||
e594a3b1 LP |
449 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { |
450 | if (!p) | |
451 | return NULL; | |
452 | ||
453 | LIST_REMOVE(partitions, context->partitions, p); | |
454 | ||
455 | assert(context->n_partitions > 0); | |
456 | context->n_partitions--; | |
457 | ||
458 | return partition_free(p); | |
459 | } | |
460 | ||
461 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
462 | ||
463 | static Context *context_new(sd_id128_t seed) { | |
464 | Context *context; | |
465 | ||
466 | context = new(Context, 1); | |
467 | if (!context) | |
468 | return NULL; | |
469 | ||
470 | *context = (Context) { | |
471 | .start = UINT64_MAX, | |
472 | .end = UINT64_MAX, | |
473 | .total = UINT64_MAX, | |
474 | .seed = seed, | |
475 | }; | |
476 | ||
477 | return context; | |
478 | } | |
479 | ||
480 | static void context_free_free_areas(Context *context) { | |
481 | assert(context); | |
482 | ||
483 | for (size_t i = 0; i < context->n_free_areas; i++) | |
484 | free(context->free_areas[i]); | |
485 | ||
486 | context->free_areas = mfree(context->free_areas); | |
487 | context->n_free_areas = 0; | |
e594a3b1 LP |
488 | } |
489 | ||
490 | static Context *context_free(Context *context) { | |
491 | if (!context) | |
492 | return NULL; | |
493 | ||
494 | while (context->partitions) | |
495 | partition_unlink_and_free(context, context->partitions); | |
496 | assert(context->n_partitions == 0); | |
497 | ||
498 | context_free_free_areas(context); | |
499 | ||
500 | if (context->fdisk_context) | |
501 | fdisk_unref_context(context->fdisk_context); | |
502 | ||
cc751c75 | 503 | safe_close(context->backing_fd); |
db1d4e6b DDM |
504 | if (context->node_is_our_file) |
505 | unlink_and_free(context->node); | |
506 | else | |
507 | free(context->node); | |
cc751c75 | 508 | |
e594a3b1 LP |
509 | return mfree(context); |
510 | } | |
511 | ||
512 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
513 | ||
514 | static int context_add_free_area( | |
515 | Context *context, | |
516 | uint64_t size, | |
517 | Partition *after) { | |
518 | ||
519 | FreeArea *a; | |
520 | ||
521 | assert(context); | |
522 | assert(!after || !after->padding_area); | |
523 | ||
319a4f4b | 524 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
525 | return -ENOMEM; |
526 | ||
527 | a = new(FreeArea, 1); | |
528 | if (!a) | |
529 | return -ENOMEM; | |
530 | ||
531 | *a = (FreeArea) { | |
532 | .size = size, | |
533 | .after = after, | |
534 | }; | |
535 | ||
536 | context->free_areas[context->n_free_areas++] = a; | |
537 | ||
538 | if (after) | |
539 | after->padding_area = a; | |
540 | ||
541 | return 0; | |
542 | } | |
543 | ||
9ccceb9d YW |
544 | static void partition_drop_or_foreignize(Partition *p) { |
545 | if (!p || p->dropped || PARTITION_IS_FOREIGN(p)) | |
546 | return; | |
547 | ||
548 | if (PARTITION_EXISTS(p)) { | |
549 | log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.", | |
550 | strna(p->current_label ?: p->new_label), p->priority); | |
551 | ||
552 | /* Handle the partition as foreign. Do not set dropped flag. */ | |
553 | partition_foreignize(p); | |
554 | } else { | |
555 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", | |
556 | p->definition_path, p->priority); | |
557 | ||
558 | p->dropped = true; | |
559 | p->allocated_to_area = NULL; | |
560 | } | |
561 | } | |
562 | ||
563 | static bool context_drop_or_foreignize_one_priority(Context *context) { | |
e594a3b1 | 564 | int32_t priority = 0; |
e594a3b1 LP |
565 | |
566 | LIST_FOREACH(partitions, p, context->partitions) { | |
567 | if (p->dropped) | |
568 | continue; | |
e594a3b1 | 569 | |
9ccceb9d | 570 | priority = MAX(priority, p->priority); |
e594a3b1 LP |
571 | } |
572 | ||
573 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
574 | * least one existing priority */ | |
9ccceb9d | 575 | if (priority <= 0) |
e594a3b1 LP |
576 | return false; |
577 | ||
578 | LIST_FOREACH(partitions, p, context->partitions) { | |
579 | if (p->priority < priority) | |
580 | continue; | |
581 | ||
9ccceb9d | 582 | partition_drop_or_foreignize(p); |
b5b7879a DDM |
583 | |
584 | /* We ensure that all verity sibling partitions have the same priority, so it's safe | |
585 | * to drop all siblings here as well. */ | |
586 | ||
9ccceb9d YW |
587 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) |
588 | partition_drop_or_foreignize(p->siblings[mode]); | |
e594a3b1 LP |
589 | } |
590 | ||
591 | return true; | |
592 | } | |
593 | ||
a80701e6 | 594 | static uint64_t partition_min_size(const Context *context, const Partition *p) { |
e594a3b1 LP |
595 | uint64_t sz; |
596 | ||
994b3031 LP |
597 | assert(context); |
598 | assert(p); | |
599 | ||
e594a3b1 LP |
600 | /* Calculate the disk space we really need at minimum for this partition. If the partition already |
601 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
602 | * than 4K. |
603 | * | |
604 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
605 | |
606 | if (PARTITION_IS_FOREIGN(p)) { | |
607 | /* Don't allow changing size of partitions not managed by us */ | |
608 | assert(p->current_size != UINT64_MAX); | |
609 | return p->current_size; | |
610 | } | |
611 | ||
b456191d DDM |
612 | if (p->verity == VERITY_SIG) |
613 | return VERITY_SIG_SIZE; | |
614 | ||
fb08381c | 615 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 616 | |
170c9823 LP |
617 | if (!PARTITION_EXISTS(p)) { |
618 | uint64_t d = 0; | |
619 | ||
889914ef | 620 | if (p->encrypt != ENCRYPT_OFF) |
48a09a8f | 621 | d += round_up_size(LUKS2_METADATA_KEEP_FREE, context->grain_size); |
170c9823 LP |
622 | |
623 | if (p->copy_blocks_size != UINT64_MAX) | |
994b3031 | 624 | d += round_up_size(p->copy_blocks_size, context->grain_size); |
889914ef | 625 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
626 | uint64_t f; |
627 | ||
628 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
994b3031 LP |
629 | f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX; |
630 | d += f == UINT64_MAX ? context->grain_size : f; | |
170c9823 LP |
631 | } |
632 | ||
633 | if (d > sz) | |
634 | sz = d; | |
635 | } | |
757bc2e4 | 636 | |
994b3031 | 637 | return MAX(round_up_size(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, context->grain_size), sz); |
e594a3b1 LP |
638 | } |
639 | ||
994b3031 LP |
640 | static uint64_t partition_max_size(const Context *context, const Partition *p) { |
641 | uint64_t sm; | |
642 | ||
e594a3b1 LP |
643 | /* Calculate how large the partition may become at max. This is generally the configured maximum |
644 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
645 | * since we never want to shrink partitions. */ | |
646 | ||
994b3031 LP |
647 | assert(context); |
648 | assert(p); | |
649 | ||
e594a3b1 LP |
650 | if (PARTITION_IS_FOREIGN(p)) { |
651 | /* Don't allow changing size of partitions not managed by us */ | |
652 | assert(p->current_size != UINT64_MAX); | |
653 | return p->current_size; | |
654 | } | |
655 | ||
b456191d DDM |
656 | if (p->verity == VERITY_SIG) |
657 | return VERITY_SIG_SIZE; | |
658 | ||
822d9b9a YW |
659 | if (p->size_max == UINT64_MAX) |
660 | return UINT64_MAX; | |
661 | ||
994b3031 LP |
662 | sm = round_down_size(p->size_max, context->grain_size); |
663 | ||
e594a3b1 | 664 | if (p->current_size != UINT64_MAX) |
b0fbf90b | 665 | sm = MAX(p->current_size, sm); |
e594a3b1 | 666 | |
b0fbf90b | 667 | return MAX(partition_min_size(context, p), sm); |
e594a3b1 LP |
668 | } |
669 | ||
a801bb01 YW |
670 | static uint64_t partition_min_padding(const Partition *p) { |
671 | assert(p); | |
672 | return p->padding_min != UINT64_MAX ? p->padding_min : 0; | |
673 | } | |
674 | ||
675 | static uint64_t partition_max_padding(const Partition *p) { | |
676 | assert(p); | |
677 | return p->padding_max; | |
678 | } | |
679 | ||
994b3031 | 680 | static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) { |
e594a3b1 LP |
681 | uint64_t sz; |
682 | ||
683 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
684 | * takes user configured padding into account as well as any additional whitespace needed to align | |
685 | * the next partition to 4K again. */ | |
686 | ||
994b3031 LP |
687 | assert(context); |
688 | assert(p); | |
689 | ||
a801bb01 | 690 | sz = partition_min_size(context, p) + partition_min_padding(p); |
e594a3b1 LP |
691 | |
692 | if (PARTITION_EXISTS(p)) { | |
693 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
694 | assert(p->offset != UINT64_MAX); | |
994b3031 | 695 | return round_up_size(p->offset + sz, context->grain_size) - p->offset; |
e594a3b1 LP |
696 | } |
697 | ||
698 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
994b3031 | 699 | return round_up_size(sz, context->grain_size); |
e594a3b1 LP |
700 | } |
701 | ||
702 | static uint64_t free_area_available(const FreeArea *a) { | |
703 | assert(a); | |
704 | ||
705 | /* Determines how much of this free area is not allocated yet */ | |
706 | ||
707 | assert(a->size >= a->allocated); | |
708 | return a->size - a->allocated; | |
709 | } | |
710 | ||
58b06ac1 | 711 | static uint64_t free_area_current_end(Context *context, const FreeArea *a) { |
994b3031 LP |
712 | assert(context); |
713 | assert(a); | |
714 | ||
58b06ac1 YW |
715 | if (!a->after) |
716 | return free_area_available(a); | |
e594a3b1 | 717 | |
58b06ac1 YW |
718 | assert(a->after->offset != UINT64_MAX); |
719 | assert(a->after->current_size != UINT64_MAX); | |
e594a3b1 | 720 | |
58b06ac1 YW |
721 | /* Calculate where the free area ends, based on the offset of the partition preceding it. */ |
722 | return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a); | |
723 | } | |
e594a3b1 | 724 | |
58b06ac1 YW |
725 | static uint64_t free_area_min_end(Context *context, const FreeArea *a) { |
726 | assert(context); | |
727 | assert(a); | |
e594a3b1 | 728 | |
58b06ac1 YW |
729 | if (!a->after) |
730 | return 0; | |
e594a3b1 | 731 | |
58b06ac1 YW |
732 | assert(a->after->offset != UINT64_MAX); |
733 | assert(a->after->current_size != UINT64_MAX); | |
1052a114 | 734 | |
58b06ac1 YW |
735 | /* Calculate where the partition would end when we give it as much as it needs. */ |
736 | return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size); | |
737 | } | |
738 | ||
739 | static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) { | |
740 | assert(context); | |
741 | assert(a); | |
742 | ||
743 | /* Similar to free_area_available(), but takes into account that the required size and padding of the | |
744 | * preceding partition is honoured. */ | |
e594a3b1 | 745 | |
58b06ac1 | 746 | return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a)); |
e594a3b1 LP |
747 | } |
748 | ||
994b3031 LP |
749 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) { |
750 | assert(context); | |
751 | ||
752 | return CMP(free_area_available_for_new_partitions(context, *a), | |
753 | free_area_available_for_new_partitions(context, *b)); | |
e594a3b1 LP |
754 | } |
755 | ||
994b3031 LP |
756 | static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) { |
757 | assert(context); | |
e594a3b1 | 758 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ |
184cf99a | 759 | assert(amount <= total); |
994b3031 | 760 | return LESS_BY(total, round_up_size(amount, context->grain_size)); |
e594a3b1 LP |
761 | } |
762 | ||
763 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
764 | assert(amount <= total); | |
765 | return total - amount; | |
766 | } | |
767 | ||
14a4c4ed | 768 | static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) { |
e594a3b1 LP |
769 | assert(context); |
770 | ||
f39cf264 YW |
771 | /* This may be called multiple times. Reset previous assignments. */ |
772 | for (size_t i = 0; i < context->n_free_areas; i++) | |
773 | context->free_areas[i]->allocated = 0; | |
774 | ||
14a4c4ed | 775 | /* Sort free areas by size, putting smallest first */ |
994b3031 | 776 | typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context); |
e594a3b1 | 777 | |
14a4c4ed LP |
778 | /* In any case return size of the largest free area (i.e. not the size of all free areas |
779 | * combined!) */ | |
780 | if (ret_largest_free_area) | |
781 | *ret_largest_free_area = | |
782 | context->n_free_areas == 0 ? 0 : | |
994b3031 | 783 | free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]); |
14a4c4ed | 784 | |
cdbcc339 YW |
785 | /* Check that each existing partition can fit its area. */ |
786 | for (size_t i = 0; i < context->n_free_areas; i++) | |
787 | if (free_area_current_end(context, context->free_areas[i]) < | |
788 | free_area_min_end(context, context->free_areas[i])) | |
789 | return false; | |
790 | ||
14a4c4ed | 791 | /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */ |
e594a3b1 LP |
792 | LIST_FOREACH(partitions, p, context->partitions) { |
793 | bool fits = false; | |
794 | uint64_t required; | |
795 | FreeArea *a = NULL; | |
796 | ||
797 | /* Skip partitions we already dropped or that already exist */ | |
798 | if (p->dropped || PARTITION_EXISTS(p)) | |
799 | continue; | |
800 | ||
e594a3b1 | 801 | /* How much do we need to fit? */ |
994b3031 LP |
802 | required = partition_min_size_with_padding(context, p); |
803 | assert(required % context->grain_size == 0); | |
e594a3b1 LP |
804 | |
805 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
806 | a = context->free_areas[i]; | |
807 | ||
994b3031 | 808 | if (free_area_available_for_new_partitions(context, a) >= required) { |
e594a3b1 LP |
809 | fits = true; |
810 | break; | |
811 | } | |
812 | } | |
813 | ||
814 | if (!fits) | |
815 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
816 | ||
817 | /* Assign the partition to this free area */ | |
818 | p->allocated_to_area = a; | |
819 | ||
820 | /* Budget the minimal partition size */ | |
821 | a->allocated += required; | |
822 | } | |
823 | ||
824 | return true; | |
825 | } | |
826 | ||
827 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
828 | uint64_t weight_sum = 0; | |
e594a3b1 LP |
829 | |
830 | assert(context); | |
831 | assert(a); | |
832 | assert(ret); | |
833 | ||
834 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
835 | ||
836 | LIST_FOREACH(partitions, p, context->partitions) { | |
837 | if (p->padding_area != a && p->allocated_to_area != a) | |
838 | continue; | |
839 | ||
840 | if (p->weight > UINT64_MAX - weight_sum) | |
841 | goto overflow_sum; | |
842 | weight_sum += p->weight; | |
843 | ||
844 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
845 | goto overflow_sum; | |
846 | weight_sum += p->padding_weight; | |
847 | } | |
848 | ||
849 | *ret = weight_sum; | |
850 | return 0; | |
851 | ||
852 | overflow_sum: | |
853 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64bit range, refusing."); | |
854 | } | |
855 | ||
0245e15a | 856 | static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) { |
e594a3b1 | 857 | assert(weight_sum >= weight); |
e594a3b1 | 858 | |
0245e15a YW |
859 | for (;;) { |
860 | if (weight == 0) | |
861 | return 0; | |
862 | if (weight == weight_sum) | |
863 | return value; | |
864 | if (value <= UINT64_MAX / weight) | |
865 | return value * weight / weight_sum; | |
866 | ||
867 | /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the | |
868 | * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down: | |
869 | * - the sum of scale_by_weight() for all weights must not be larger than the input value, | |
870 | * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */ | |
871 | weight_sum = DIV_ROUND_UP(weight_sum, 2); | |
872 | weight /= 2; | |
e594a3b1 | 873 | } |
e594a3b1 LP |
874 | } |
875 | ||
876 | typedef enum GrowPartitionPhase { | |
bf99aed6 YW |
877 | /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */ |
878 | PHASE_FOREIGN, | |
879 | ||
e594a3b1 LP |
880 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ |
881 | PHASE_OVERCHARGE, | |
882 | ||
883 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
884 | PHASE_UNDERCHARGE, | |
885 | ||
886 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
887 | PHASE_DISTRIBUTE, | |
ae0613c6 LP |
888 | |
889 | _GROW_PARTITION_PHASE_MAX, | |
e594a3b1 LP |
890 | } GrowPartitionPhase; |
891 | ||
0245e15a | 892 | static bool context_grow_partitions_phase( |
e594a3b1 LP |
893 | Context *context, |
894 | FreeArea *a, | |
895 | GrowPartitionPhase phase, | |
896 | uint64_t *span, | |
897 | uint64_t *weight_sum) { | |
898 | ||
2a503ad2 YW |
899 | bool try_again = false; |
900 | ||
e594a3b1 LP |
901 | assert(context); |
902 | assert(a); | |
0245e15a YW |
903 | assert(span); |
904 | assert(weight_sum); | |
e594a3b1 LP |
905 | |
906 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
907 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
908 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
909 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
910 | LIST_FOREACH(partitions, p, context->partitions) { | |
911 | ||
912 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 913 | * preceding it, or allocated into it */ |
e594a3b1 LP |
914 | if (p->allocated_to_area != a && p->padding_area != a) |
915 | continue; | |
916 | ||
917 | if (p->new_size == UINT64_MAX) { | |
e594a3b1 | 918 | uint64_t share, rsz, xsz; |
2a503ad2 | 919 | bool charge = false; |
e594a3b1 LP |
920 | |
921 | /* Calculate how much this space this partition needs if everyone would get | |
922 | * the weight based share */ | |
0245e15a | 923 | share = scale_by_weight(*span, p->weight, *weight_sum); |
e594a3b1 | 924 | |
994b3031 LP |
925 | rsz = partition_min_size(context, p); |
926 | xsz = partition_max_size(context, p); | |
e594a3b1 | 927 | |
bf99aed6 YW |
928 | if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) { |
929 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
930 | ||
931 | p->new_size = p->current_size; | |
932 | charge = true; | |
933 | ||
934 | } else if (phase == PHASE_OVERCHARGE && rsz > share) { | |
e594a3b1 LP |
935 | /* This partition needs more than its calculated share. Let's assign |
936 | * it that, and take this partition out of all calculations and start | |
937 | * again. */ | |
938 | ||
939 | p->new_size = rsz; | |
940 | charge = try_again = true; | |
941 | ||
822d9b9a | 942 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
e594a3b1 LP |
943 | /* This partition accepts less than its calculated |
944 | * share. Let's assign it that, and take this partition out | |
945 | * of all calculations and start again. */ | |
946 | ||
947 | p->new_size = xsz; | |
948 | charge = try_again = true; | |
949 | ||
950 | } else if (phase == PHASE_DISTRIBUTE) { | |
951 | /* This partition can accept its calculated share. Let's | |
952 | * assign it. There's no need to restart things here since | |
953 | * assigning this shouldn't impact the shares of the other | |
954 | * partitions. */ | |
955 | ||
d7c46b5e YW |
956 | assert(share >= rsz); |
957 | p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
958 | charge = true; |
959 | } | |
960 | ||
961 | if (charge) { | |
994b3031 | 962 | *span = charge_size(context, *span, p->new_size); |
e594a3b1 LP |
963 | *weight_sum = charge_weight(*weight_sum, p->weight); |
964 | } | |
e594a3b1 LP |
965 | } |
966 | ||
967 | if (p->new_padding == UINT64_MAX) { | |
a801bb01 | 968 | uint64_t share, rsz, xsz; |
2a503ad2 | 969 | bool charge = false; |
e594a3b1 | 970 | |
0245e15a | 971 | share = scale_by_weight(*span, p->padding_weight, *weight_sum); |
e594a3b1 | 972 | |
a801bb01 YW |
973 | rsz = partition_min_padding(p); |
974 | xsz = partition_max_padding(p); | |
975 | ||
976 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
977 | p->new_padding = rsz; | |
e594a3b1 | 978 | charge = try_again = true; |
a801bb01 YW |
979 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
980 | p->new_padding = xsz; | |
e594a3b1 LP |
981 | charge = try_again = true; |
982 | } else if (phase == PHASE_DISTRIBUTE) { | |
d7c46b5e YW |
983 | assert(share >= rsz); |
984 | p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
985 | charge = true; |
986 | } | |
987 | ||
988 | if (charge) { | |
994b3031 | 989 | *span = charge_size(context, *span, p->new_padding); |
e594a3b1 LP |
990 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); |
991 | } | |
e594a3b1 LP |
992 | } |
993 | } | |
994 | ||
2a503ad2 | 995 | return !try_again; |
e594a3b1 LP |
996 | } |
997 | ||
19903a43 YW |
998 | static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) { |
999 | uint64_t m; | |
1000 | ||
1001 | assert(context); | |
1002 | assert(a); | |
1003 | assert(p); | |
1004 | assert(span); | |
1005 | ||
1006 | if (*span == 0) | |
1007 | return; | |
1008 | ||
1009 | if (p->allocated_to_area != a) | |
1010 | return; | |
1011 | ||
1012 | if (PARTITION_IS_FOREIGN(p)) | |
1013 | return; | |
1014 | ||
1015 | assert(p->new_size != UINT64_MAX); | |
1016 | ||
1017 | /* Calculate new size and align. */ | |
1018 | m = round_down_size(p->new_size + *span, context->grain_size); | |
1019 | /* But ensure this doesn't shrink the size. */ | |
1020 | m = MAX(m, p->new_size); | |
1021 | /* And ensure this doesn't exceed the maximum size. */ | |
1022 | m = MIN(m, partition_max_size(context, p)); | |
1023 | ||
1024 | assert(m >= p->new_size); | |
1025 | ||
1026 | *span = charge_size(context, *span, m - p->new_size); | |
1027 | p->new_size = m; | |
1028 | } | |
1029 | ||
e594a3b1 LP |
1030 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { |
1031 | uint64_t weight_sum = 0, span; | |
1032 | int r; | |
1033 | ||
1034 | assert(context); | |
1035 | assert(a); | |
1036 | ||
1037 | r = context_sum_weights(context, a, &weight_sum); | |
1038 | if (r < 0) | |
1039 | return r; | |
1040 | ||
1041 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
1042 | span = a->size; | |
1043 | if (a->after) { | |
1044 | assert(a->after->offset != UINT64_MAX); | |
1045 | assert(a->after->current_size != UINT64_MAX); | |
1046 | ||
994b3031 | 1047 | span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset; |
e594a3b1 LP |
1048 | } |
1049 | ||
0245e15a YW |
1050 | for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;) |
1051 | if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum)) | |
1052 | phase++; /* go to the next phase */ | |
e594a3b1 | 1053 | |
162392b7 | 1054 | /* We still have space left over? Donate to preceding partition if we have one */ |
19903a43 YW |
1055 | if (span > 0 && a->after) |
1056 | context_grow_partition_one(context, a, a->after, &span); | |
e594a3b1 | 1057 | |
162392b7 | 1058 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 | 1059 | * size limit), then let's donate it to whoever wants it. */ |
03677889 | 1060 | if (span > 0) |
e594a3b1 | 1061 | LIST_FOREACH(partitions, p, context->partitions) { |
19903a43 | 1062 | context_grow_partition_one(context, a, p, &span); |
e594a3b1 LP |
1063 | if (span == 0) |
1064 | break; | |
1065 | } | |
e594a3b1 | 1066 | |
162392b7 | 1067 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
1068 | if (span > 0 && a->after) { |
1069 | assert(a->after->new_padding != UINT64_MAX); | |
1070 | a->after->new_padding += span; | |
1071 | } | |
1072 | ||
1073 | return 0; | |
1074 | } | |
1075 | ||
1076 | static int context_grow_partitions(Context *context) { | |
e594a3b1 LP |
1077 | int r; |
1078 | ||
1079 | assert(context); | |
1080 | ||
1081 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
1082 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
1083 | if (r < 0) | |
1084 | return r; | |
1085 | } | |
1086 | ||
1087 | /* All existing partitions that have no free space after them can't change size */ | |
1088 | LIST_FOREACH(partitions, p, context->partitions) { | |
1089 | if (p->dropped) | |
1090 | continue; | |
1091 | ||
1092 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
1093 | /* The algorithm above must have initialized this already */ | |
1094 | assert(p->new_size != UINT64_MAX); | |
1095 | continue; | |
1096 | } | |
1097 | ||
1098 | assert(p->new_size == UINT64_MAX); | |
1099 | p->new_size = p->current_size; | |
1100 | ||
1101 | assert(p->new_padding == UINT64_MAX); | |
1102 | p->new_padding = p->current_padding; | |
1103 | } | |
1104 | ||
1105 | return 0; | |
1106 | } | |
1107 | ||
00428745 | 1108 | static uint64_t find_first_unused_partno(Context *context) { |
e594a3b1 | 1109 | uint64_t partno = 0; |
e594a3b1 LP |
1110 | |
1111 | assert(context); | |
1112 | ||
5f59807d DDM |
1113 | for (partno = 0;; partno++) { |
1114 | bool found = false; | |
1115 | LIST_FOREACH(partitions, p, context->partitions) | |
1116 | if (p->partno != UINT64_MAX && p->partno == partno) | |
1117 | found = true; | |
1118 | if (!found) | |
1119 | break; | |
e594a3b1 LP |
1120 | } |
1121 | ||
00428745 DDM |
1122 | return partno; |
1123 | } | |
1124 | ||
1125 | static void context_place_partitions(Context *context) { | |
1126 | ||
1127 | assert(context); | |
1128 | ||
e594a3b1 LP |
1129 | for (size_t i = 0; i < context->n_free_areas; i++) { |
1130 | FreeArea *a = context->free_areas[i]; | |
2ea7eb00 FS |
1131 | _unused_ uint64_t left; |
1132 | uint64_t start; | |
e594a3b1 LP |
1133 | |
1134 | if (a->after) { | |
1135 | assert(a->after->offset != UINT64_MAX); | |
1136 | assert(a->after->new_size != UINT64_MAX); | |
1137 | assert(a->after->new_padding != UINT64_MAX); | |
1138 | ||
1139 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
1140 | } else | |
1141 | start = context->start; | |
1142 | ||
994b3031 | 1143 | start = round_up_size(start, context->grain_size); |
e594a3b1 LP |
1144 | left = a->size; |
1145 | ||
1146 | LIST_FOREACH(partitions, p, context->partitions) { | |
1147 | if (p->allocated_to_area != a) | |
1148 | continue; | |
1149 | ||
1150 | p->offset = start; | |
00428745 | 1151 | p->partno = find_first_unused_partno(context); |
e594a3b1 LP |
1152 | |
1153 | assert(left >= p->new_size); | |
1154 | start += p->new_size; | |
1155 | left -= p->new_size; | |
1156 | ||
1157 | assert(left >= p->new_padding); | |
1158 | start += p->new_padding; | |
1159 | left -= p->new_padding; | |
1160 | } | |
1161 | } | |
1162 | } | |
1163 | ||
e594a3b1 LP |
1164 | static int config_parse_type( |
1165 | const char *unit, | |
1166 | const char *filename, | |
1167 | unsigned line, | |
1168 | const char *section, | |
1169 | unsigned section_line, | |
1170 | const char *lvalue, | |
1171 | int ltype, | |
1172 | const char *rvalue, | |
1173 | void *data, | |
1174 | void *userdata) { | |
1175 | ||
22e932f4 | 1176 | GptPartitionType *type = ASSERT_PTR(data); |
e594a3b1 LP |
1177 | int r; |
1178 | ||
1179 | assert(rvalue); | |
e594a3b1 | 1180 | |
22e932f4 | 1181 | r = gpt_partition_type_from_string(rvalue, type); |
e594a3b1 LP |
1182 | if (r < 0) |
1183 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
1184 | ||
9786dfe6 DDM |
1185 | if (arg_architecture >= 0) |
1186 | *type = gpt_partition_type_override_architecture(*type, arg_architecture); | |
1187 | ||
e594a3b1 LP |
1188 | return 0; |
1189 | } | |
1190 | ||
1191 | static int config_parse_label( | |
1192 | const char *unit, | |
1193 | const char *filename, | |
1194 | unsigned line, | |
1195 | const char *section, | |
1196 | unsigned section_line, | |
1197 | const char *lvalue, | |
1198 | int ltype, | |
1199 | const char *rvalue, | |
1200 | void *data, | |
1201 | void *userdata) { | |
1202 | ||
e031166e | 1203 | _cleanup_free_ char *resolved = NULL; |
99534007 | 1204 | char **label = ASSERT_PTR(data); |
e594a3b1 LP |
1205 | int r; |
1206 | ||
1207 | assert(rvalue); | |
e594a3b1 | 1208 | |
be9ce018 LP |
1209 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
1210 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
1211 | ||
de61a04b | 1212 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved); |
e031166e | 1213 | if (r < 0) { |
e459258f | 1214 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
1215 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
1220 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1221 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
1222 | return 0; | |
1223 | } | |
1224 | ||
22a0a36e LP |
1225 | r = gpt_partition_label_valid(resolved); |
1226 | if (r < 0) { | |
1227 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1228 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
1229 | resolved, rvalue); | |
1230 | return 0; | |
1231 | } | |
1232 | if (!r) { | |
e594a3b1 | 1233 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
1234 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
1235 | resolved, rvalue); | |
e594a3b1 LP |
1236 | return 0; |
1237 | } | |
1238 | ||
e031166e | 1239 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1240 | return 0; |
1241 | } | |
1242 | ||
1243 | static int config_parse_weight( | |
1244 | const char *unit, | |
1245 | const char *filename, | |
1246 | unsigned line, | |
1247 | const char *section, | |
1248 | unsigned section_line, | |
1249 | const char *lvalue, | |
1250 | int ltype, | |
1251 | const char *rvalue, | |
1252 | void *data, | |
1253 | void *userdata) { | |
1254 | ||
f126038f | 1255 | uint32_t *w = ASSERT_PTR(data), v; |
e594a3b1 LP |
1256 | int r; |
1257 | ||
1258 | assert(rvalue); | |
e594a3b1 LP |
1259 | |
1260 | r = safe_atou32(rvalue, &v); | |
1261 | if (r < 0) { | |
1262 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1263 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1264 | return 0; | |
1265 | } | |
1266 | ||
1267 | if (v > 1000U*1000U) { | |
c8f3d767 | 1268 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1269 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1270 | return 0; | |
1271 | } | |
1272 | ||
f126038f | 1273 | *w = v; |
e594a3b1 LP |
1274 | return 0; |
1275 | } | |
1276 | ||
1277 | static int config_parse_size4096( | |
1278 | const char *unit, | |
1279 | const char *filename, | |
1280 | unsigned line, | |
1281 | const char *section, | |
1282 | unsigned section_line, | |
1283 | const char *lvalue, | |
1284 | int ltype, | |
1285 | const char *rvalue, | |
1286 | void *data, | |
1287 | void *userdata) { | |
1288 | ||
1289 | uint64_t *sz = data, parsed; | |
1290 | int r; | |
1291 | ||
1292 | assert(rvalue); | |
1293 | assert(data); | |
1294 | ||
1295 | r = parse_size(rvalue, 1024, &parsed); | |
1296 | if (r < 0) | |
c8f3d767 | 1297 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1298 | "Failed to parse size value: %s", rvalue); |
1299 | ||
1300 | if (ltype > 0) | |
1301 | *sz = round_up_size(parsed, 4096); | |
1302 | else if (ltype < 0) | |
1303 | *sz = round_down_size(parsed, 4096); | |
1304 | else | |
1305 | *sz = parsed; | |
1306 | ||
1307 | if (*sz != parsed) | |
e2341b6b DT |
1308 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.", |
1309 | lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz); | |
e594a3b1 LP |
1310 | |
1311 | return 0; | |
1312 | } | |
1313 | ||
53171c04 LP |
1314 | static int config_parse_fstype( |
1315 | const char *unit, | |
1316 | const char *filename, | |
1317 | unsigned line, | |
1318 | const char *section, | |
1319 | unsigned section_line, | |
1320 | const char *lvalue, | |
1321 | int ltype, | |
1322 | const char *rvalue, | |
1323 | void *data, | |
1324 | void *userdata) { | |
1325 | ||
99534007 | 1326 | char **fstype = ASSERT_PTR(data); |
53171c04 LP |
1327 | |
1328 | assert(rvalue); | |
53171c04 LP |
1329 | |
1330 | if (!filename_is_valid(rvalue)) | |
1331 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1332 | "File system type is not valid, refusing: %s", rvalue); | |
1333 | ||
1334 | return free_and_strdup_warn(fstype, rvalue); | |
1335 | } | |
1336 | ||
8a794850 LP |
1337 | static int config_parse_copy_files( |
1338 | const char *unit, | |
1339 | const char *filename, | |
1340 | unsigned line, | |
1341 | const char *section, | |
1342 | unsigned section_line, | |
1343 | const char *lvalue, | |
1344 | int ltype, | |
1345 | const char *rvalue, | |
1346 | void *data, | |
1347 | void *userdata) { | |
1348 | ||
1349 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1350 | const char *p = rvalue, *target; | |
de98e6a7 | 1351 | char ***copy_files = ASSERT_PTR(data); |
8a794850 LP |
1352 | int r; |
1353 | ||
1354 | assert(rvalue); | |
8a794850 LP |
1355 | |
1356 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1357 | if (r < 0) | |
1358 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1359 | if (r == 0) { | |
1360 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1365 | if (r < 0) | |
1366 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1367 | if (r == 0) | |
1368 | target = source; /* No target, then it's the same as the source */ | |
1369 | else | |
1370 | target = buffer; | |
1371 | ||
1372 | if (!isempty(p)) | |
1373 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1374 | ||
de61a04b | 1375 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source); |
8a794850 LP |
1376 | if (r < 0) { |
1377 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1378 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1379 | return 0; | |
1380 | } | |
1381 | ||
0ade2213 LP |
1382 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1383 | if (r < 0) | |
8a794850 | 1384 | return 0; |
8a794850 | 1385 | |
de61a04b | 1386 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target); |
8a794850 LP |
1387 | if (r < 0) { |
1388 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1389 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1390 | return 0; | |
1391 | } | |
1392 | ||
0ade2213 LP |
1393 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1394 | if (r < 0) | |
8a794850 | 1395 | return 0; |
8a794850 | 1396 | |
de98e6a7 | 1397 | r = strv_consume_pair(copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); |
8a794850 LP |
1398 | if (r < 0) |
1399 | return log_oom(); | |
1400 | ||
1401 | return 0; | |
1402 | } | |
1403 | ||
a9af8276 DDM |
1404 | static int config_parse_exclude_files( |
1405 | const char *unit, | |
1406 | const char *filename, | |
1407 | unsigned line, | |
1408 | const char *section, | |
1409 | unsigned section_line, | |
1410 | const char *lvalue, | |
1411 | int ltype, | |
1412 | const char *rvalue, | |
1413 | void *data, | |
1414 | void *userdata) { | |
1415 | _cleanup_free_ char *resolved = NULL; | |
1416 | char ***exclude_files = ASSERT_PTR(data); | |
1417 | int r; | |
1418 | ||
1419 | if (isempty(rvalue)) { | |
1420 | *exclude_files = strv_free(*exclude_files); | |
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved); | |
1425 | if (r < 0) { | |
1426 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1427 | "Failed to expand specifiers in ExcludeFiles= path, ignoring: %s", rvalue); | |
1428 | return 0; | |
1429 | } | |
1430 | ||
1431 | r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
8a794850 | 1432 | if (r < 0) |
a9af8276 DDM |
1433 | return 0; |
1434 | ||
1435 | if (strv_consume(exclude_files, TAKE_PTR(resolved)) < 0) | |
8a794850 LP |
1436 | return log_oom(); |
1437 | ||
1438 | return 0; | |
1439 | } | |
1440 | ||
5c08da58 LP |
1441 | static int config_parse_copy_blocks( |
1442 | const char *unit, | |
1443 | const char *filename, | |
1444 | unsigned line, | |
1445 | const char *section, | |
1446 | unsigned section_line, | |
1447 | const char *lvalue, | |
1448 | int ltype, | |
1449 | const char *rvalue, | |
1450 | void *data, | |
1451 | void *userdata) { | |
1452 | ||
1453 | _cleanup_free_ char *d = NULL; | |
99534007 | 1454 | Partition *partition = ASSERT_PTR(data); |
5c08da58 LP |
1455 | int r; |
1456 | ||
1457 | assert(rvalue); | |
5c08da58 LP |
1458 | |
1459 | if (isempty(rvalue)) { | |
1460 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1461 | partition->copy_blocks_auto = false; | |
1462 | return 0; | |
1463 | } | |
1464 | ||
1465 | if (streq(rvalue, "auto")) { | |
1466 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1467 | partition->copy_blocks_auto = true; | |
585c5c75 | 1468 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1469 | return 0; |
1470 | } | |
1471 | ||
de61a04b | 1472 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
5c08da58 LP |
1473 | if (r < 0) { |
1474 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1475 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1476 | return 0; | |
1477 | } | |
1478 | ||
1479 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1480 | if (r < 0) | |
1481 | return 0; | |
1482 | ||
1483 | free_and_replace(partition->copy_blocks_path, d); | |
1484 | partition->copy_blocks_auto = false; | |
585c5c75 | 1485 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1486 | return 0; |
1487 | } | |
1488 | ||
d83d8048 LP |
1489 | static int config_parse_make_dirs( |
1490 | const char *unit, | |
1491 | const char *filename, | |
1492 | unsigned line, | |
1493 | const char *section, | |
1494 | unsigned section_line, | |
1495 | const char *lvalue, | |
1496 | int ltype, | |
1497 | const char *rvalue, | |
1498 | void *data, | |
1499 | void *userdata) { | |
1500 | ||
99534007 DT |
1501 | Partition *partition = ASSERT_PTR(data); |
1502 | const char *p = ASSERT_PTR(rvalue); | |
d83d8048 LP |
1503 | int r; |
1504 | ||
d83d8048 LP |
1505 | for (;;) { |
1506 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1507 | ||
1508 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1509 | if (r == -ENOMEM) | |
1510 | return log_oom(); | |
1511 | if (r < 0) { | |
1512 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1513 | return 0; | |
1514 | } | |
1515 | if (r == 0) | |
1516 | return 0; | |
1517 | ||
de61a04b | 1518 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
d83d8048 LP |
1519 | if (r < 0) { |
1520 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1521 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1522 | continue; | |
1523 | } | |
1524 | ||
1525 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1526 | if (r < 0) | |
1527 | continue; | |
1528 | ||
1529 | r = strv_consume(&partition->make_directories, TAKE_PTR(d)); | |
1530 | if (r < 0) | |
1531 | return log_oom(); | |
1532 | } | |
1533 | } | |
1534 | ||
889914ef LP |
1535 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1536 | ||
e73309c5 LP |
1537 | static int config_parse_gpt_flags( |
1538 | const char *unit, | |
1539 | const char *filename, | |
1540 | unsigned line, | |
1541 | const char *section, | |
1542 | unsigned section_line, | |
1543 | const char *lvalue, | |
1544 | int ltype, | |
1545 | const char *rvalue, | |
1546 | void *data, | |
1547 | void *userdata) { | |
1548 | ||
99534007 | 1549 | uint64_t *gpt_flags = ASSERT_PTR(data); |
e73309c5 LP |
1550 | int r; |
1551 | ||
1552 | assert(rvalue); | |
e73309c5 LP |
1553 | |
1554 | r = safe_atou64(rvalue, gpt_flags); | |
1555 | if (r < 0) { | |
1556 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1557 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1558 | return 0; | |
1559 | } | |
1560 | ||
1561 | return 0; | |
1562 | } | |
1563 | ||
11749b61 DDM |
1564 | static int config_parse_uuid( |
1565 | const char *unit, | |
1566 | const char *filename, | |
1567 | unsigned line, | |
1568 | const char *section, | |
1569 | unsigned section_line, | |
1570 | const char *lvalue, | |
1571 | int ltype, | |
1572 | const char *rvalue, | |
1573 | void *data, | |
1574 | void *userdata) { | |
1575 | ||
1576 | Partition *partition = ASSERT_PTR(data); | |
1577 | int r; | |
1578 | ||
1579 | if (isempty(rvalue)) { | |
1580 | partition->new_uuid = SD_ID128_NULL; | |
1581 | partition->new_uuid_is_set = false; | |
1582 | return 0; | |
1583 | } | |
1584 | ||
1585 | if (streq(rvalue, "null")) { | |
1586 | partition->new_uuid = SD_ID128_NULL; | |
1587 | partition->new_uuid_is_set = true; | |
1588 | return 0; | |
1589 | } | |
1590 | ||
1591 | r = sd_id128_from_string(rvalue, &partition->new_uuid); | |
1592 | if (r < 0) { | |
1593 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue); | |
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | partition->new_uuid_is_set = true; | |
1598 | ||
1599 | return 0; | |
1600 | } | |
1601 | ||
b5b7879a | 1602 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF, "Invalid verity mode"); |
5c33b686 | 1603 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_minimize, minimize_mode, MinimizeMode, MINIMIZE_OFF, "Invalid minimize mode"); |
b5b7879a | 1604 | |
39fc0174 | 1605 | static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) { |
e594a3b1 LP |
1606 | |
1607 | ConfigTableItem table[] = { | |
600bf76c DDM |
1608 | { "Partition", "Type", config_parse_type, 0, &p->type }, |
1609 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, | |
1610 | { "Partition", "UUID", config_parse_uuid, 0, p }, | |
1611 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, | |
1612 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1613 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1614 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1615 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1616 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1617 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1618 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1619 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1620 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1621 | { "Partition", "CopyFiles", config_parse_copy_files, 0, &p->copy_files }, | |
1622 | { "Partition", "ExcludeFiles", config_parse_exclude_files, 0, &p->exclude_files_source }, | |
1623 | { "Partition", "ExcludeFilesTarget", config_parse_exclude_files, 0, &p->exclude_files_target }, | |
1624 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, p }, | |
1625 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
1626 | { "Partition", "Verity", config_parse_verity, 0, &p->verity }, | |
1627 | { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key }, | |
1628 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, | |
1629 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
1630 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, | |
1631 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, | |
1632 | { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format }, | |
1633 | { "Partition", "Minimize", config_parse_minimize, 0, &p->minimize }, | |
e594a3b1 LP |
1634 | {} |
1635 | }; | |
1636 | int r; | |
39fc0174 RP |
1637 | _cleanup_free_ char *filename = NULL; |
1638 | const char* dropin_dirname; | |
e594a3b1 | 1639 | |
39fc0174 RP |
1640 | r = path_extract_filename(path, &filename); |
1641 | if (r < 0) | |
bef69ae8 | 1642 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); |
39fc0174 RP |
1643 | |
1644 | dropin_dirname = strjoina(filename, ".d"); | |
1645 | ||
1646 | r = config_parse_many( | |
1647 | STRV_MAKE_CONST(path), | |
1648 | conf_file_dirs, | |
1649 | dropin_dirname, | |
34f2fd50 | 1650 | arg_definitions ? NULL : arg_root, |
39fc0174 RP |
1651 | "Partition\0", |
1652 | config_item_table_lookup, table, | |
1653 | CONFIG_PARSE_WARN, | |
1654 | p, | |
1655 | NULL, | |
1656 | &p->drop_in_files); | |
e594a3b1 LP |
1657 | if (r < 0) |
1658 | return r; | |
1659 | ||
7d505753 DDM |
1660 | if (partition_exclude(p)) |
1661 | return 0; | |
1662 | ||
e594a3b1 LP |
1663 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) |
1664 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1665 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1666 | ||
1667 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1668 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1669 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1670 | ||
22e932f4 | 1671 | if (sd_id128_is_null(p->type.uuid)) |
e594a3b1 LP |
1672 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1673 | "Type= not defined, refusing."); | |
1674 | ||
5c08da58 LP |
1675 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1676 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
53171c04 | 1677 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5c08da58 | 1678 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); |
53171c04 | 1679 | |
d83d8048 | 1680 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1681 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1682 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1683 | ||
5c08da58 | 1684 | if (!p->format && (!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories) || (p->encrypt != ENCRYPT_OFF && !(p->copy_blocks_path || p->copy_blocks_auto)))) { |
ab45e83f DDM |
1685 | /* Pick "vfat" as file system for esp and xbootldr partitions, otherwise default to "ext4". */ |
1686 | p->format = strdup(IN_SET(p->type.designator, PARTITION_ESP, PARTITION_XBOOTLDR) ? "vfat" : "ext4"); | |
8a794850 LP |
1687 | if (!p->format) |
1688 | return log_oom(); | |
1689 | } | |
1690 | ||
5eef7047 | 1691 | if (p->minimize != MINIMIZE_OFF && !p->format && p->verity != VERITY_HASH) |
c4a87b76 | 1692 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5eef7047 | 1693 | "Minimize= can only be enabled if Format= or Verity=hash are set"); |
c4a87b76 | 1694 | |
5eef7047 | 1695 | if (p->minimize == MINIMIZE_BEST && (p->format && !fstype_is_ro(p->format)) && p->verity != VERITY_HASH) |
5c33b686 | 1696 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5eef7047 | 1697 | "Minimize=best can only be used with read-only filesystems or Verity=hash"); |
5c33b686 | 1698 | |
6d6cefad DDM |
1699 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && !mkfs_supports_root_option(p->format) && geteuid() != 0) |
1700 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EPERM), | |
1701 | "Need to be root to populate %s filesystems with CopyFiles=/MakeDirectories=", | |
1702 | p->format); | |
1703 | ||
0eb23798 DDM |
1704 | if (p->format && fstype_is_ro(p->format) && strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
1705 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1706 | "Cannot format %s filesystem without source files, refusing", p->format); | |
1707 | ||
b5b7879a DDM |
1708 | if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) { |
1709 | r = dlopen_cryptsetup(); | |
1710 | if (r < 0) | |
1711 | return log_syntax(NULL, LOG_ERR, path, 1, r, | |
1712 | "libcryptsetup not found, Verity=/Encrypt= are not supported: %m"); | |
1713 | } | |
1714 | ||
1715 | if (p->verity != VERITY_OFF && !p->verity_match_key) | |
1716 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1717 | "VerityMatchKey= must be set if Verity=%s", verity_mode_to_string(p->verity)); | |
1718 | ||
1719 | if (p->verity == VERITY_OFF && p->verity_match_key) | |
1720 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1721 | "VerityMatchKey= can only be set if Verity= is not \"%s\"", | |
1722 | verity_mode_to_string(p->verity)); | |
1723 | ||
b456191d DDM |
1724 | if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && |
1725 | (p->copy_files || p->copy_blocks_path || p->copy_blocks_auto || p->format || p->make_directories)) | |
b5b7879a DDM |
1726 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1727 | "CopyBlocks=/CopyFiles=/Format=/MakeDirectories= cannot be used with Verity=%s", | |
1728 | verity_mode_to_string(p->verity)); | |
1729 | ||
1730 | if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF) | |
1731 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1732 | "Encrypting verity hash/data partitions is not supported"); | |
1733 | ||
b456191d DDM |
1734 | if (p->verity == VERITY_SIG && !arg_private_key) |
1735 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1736 | "Verity signature partition requested but no private key provided (--private-key=)"); | |
1737 | ||
1738 | if (p->verity == VERITY_SIG && !arg_certificate) | |
1739 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
ba4a5eff | 1740 | "Verity signature partition requested but no PEM certificate provided (--certificate=)"); |
b456191d DDM |
1741 | |
1742 | if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX)) | |
1743 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1744 | "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s", | |
1745 | verity_mode_to_string(p->verity)); | |
1746 | ||
e73309c5 | 1747 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
c1979cd8 | 1748 | if (IN_SET(p->type.designator, PARTITION_ROOT_VERITY, PARTITION_USR_VERITY) && p->read_only < 0) |
e73309c5 LP |
1749 | p->read_only = true; |
1750 | ||
1c41c1dc | 1751 | /* Default to "growfs" on, unless read-only */ |
22e932f4 | 1752 | if (gpt_partition_type_knows_growfs(p->type) && |
1c41c1dc LP |
1753 | p->read_only <= 0) |
1754 | p->growfs = true; | |
1755 | ||
4cee8333 DDM |
1756 | if (!p->split_name_format) { |
1757 | char *s = strdup("%t"); | |
1758 | if (!s) | |
1759 | return log_oom(); | |
1760 | ||
1761 | p->split_name_format = s; | |
1762 | } else if (streq(p->split_name_format, "-")) | |
1763 | p->split_name_format = mfree(p->split_name_format); | |
1764 | ||
7d505753 | 1765 | return 1; |
e594a3b1 LP |
1766 | } |
1767 | ||
b5b7879a DDM |
1768 | static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) { |
1769 | Partition *s = NULL; | |
1770 | ||
1771 | assert(p); | |
1772 | assert(p->verity != VERITY_OFF); | |
1773 | assert(p->verity_match_key); | |
1774 | assert(mode != VERITY_OFF); | |
1775 | assert(p->verity != mode); | |
1776 | assert(ret); | |
1777 | ||
1778 | /* Try to find the matching sibling partition of the given type for a verity partition. For a data | |
af3d3873 YW |
1779 | * partition, this is the corresponding hash partition with the same verity name (and vice versa for |
1780 | * the hash partition). */ | |
b5b7879a DDM |
1781 | |
1782 | LIST_FOREACH(partitions, q, context->partitions) { | |
1783 | if (p == q) | |
1784 | continue; | |
1785 | ||
1786 | if (q->verity != mode) | |
1787 | continue; | |
1788 | ||
1789 | assert(q->verity_match_key); | |
1790 | ||
1791 | if (!streq(p->verity_match_key, q->verity_match_key)) | |
1792 | continue; | |
1793 | ||
1794 | if (s) | |
1795 | return -ENOTUNIQ; | |
1796 | ||
1797 | s = q; | |
1798 | } | |
1799 | ||
1800 | if (!s) | |
1801 | return -ENXIO; | |
1802 | ||
1803 | *ret = s; | |
1804 | ||
1805 | return 0; | |
1806 | } | |
1807 | ||
4b047310 | 1808 | static int context_read_definitions(Context *context) { |
e594a3b1 LP |
1809 | _cleanup_strv_free_ char **files = NULL; |
1810 | Partition *last = NULL; | |
39fc0174 | 1811 | const char *const *dirs; |
9b05a371 | 1812 | int r; |
e594a3b1 LP |
1813 | |
1814 | assert(context); | |
1815 | ||
4b047310 | 1816 | dirs = (const char* const*) (arg_definitions ?: CONF_PATHS_STRV("repart.d")); |
39fc0174 | 1817 | |
4b047310 | 1818 | r = conf_files_list_strv(&files, ".conf", arg_definitions ? NULL : arg_root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs); |
e594a3b1 LP |
1819 | if (r < 0) |
1820 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
1821 | ||
1822 | STRV_FOREACH(f, files) { | |
1823 | _cleanup_(partition_freep) Partition *p = NULL; | |
1824 | ||
1825 | p = partition_new(); | |
1826 | if (!p) | |
1827 | return log_oom(); | |
1828 | ||
1829 | p->definition_path = strdup(*f); | |
1830 | if (!p->definition_path) | |
1831 | return log_oom(); | |
1832 | ||
39fc0174 | 1833 | r = partition_read_definition(p, *f, dirs); |
e594a3b1 LP |
1834 | if (r < 0) |
1835 | return r; | |
7d505753 DDM |
1836 | if (r == 0) |
1837 | continue; | |
e594a3b1 LP |
1838 | |
1839 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
1840 | last = TAKE_PTR(p); | |
1841 | context->n_partitions++; | |
1842 | } | |
1843 | ||
b5b7879a DDM |
1844 | /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */ |
1845 | ||
1846 | LIST_FOREACH(partitions, p, context->partitions) { | |
1847 | if (p->verity == VERITY_OFF) | |
1848 | continue; | |
1849 | ||
1850 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
b456191d | 1851 | Partition *q = NULL; |
b5b7879a DDM |
1852 | |
1853 | if (p->verity == mode) | |
1854 | continue; | |
1855 | ||
1856 | if (p->siblings[mode]) | |
1857 | continue; | |
1858 | ||
1859 | r = find_verity_sibling(context, p, mode, &q); | |
8e52ed02 DDM |
1860 | if (r == -ENXIO) { |
1861 | if (mode != VERITY_SIG) | |
1862 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1863 | "Missing verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1864 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
1865 | } else if (r == -ENOTUNIQ) | |
b5b7879a DDM |
1866 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), |
1867 | "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s", | |
1868 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
8e52ed02 DDM |
1869 | else if (r < 0) |
1870 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r, | |
1871 | "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1872 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
b5b7879a | 1873 | |
b456191d DDM |
1874 | if (q) { |
1875 | if (q->priority != p->priority) | |
1876 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1877 | "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s", | |
1878 | p->priority, q->priority, p->verity_match_key); | |
b5b7879a | 1879 | |
b456191d DDM |
1880 | p->siblings[mode] = q; |
1881 | } | |
b5b7879a DDM |
1882 | } |
1883 | } | |
1884 | ||
5eef7047 DDM |
1885 | LIST_FOREACH(partitions, p, context->partitions) { |
1886 | Partition *dp; | |
1887 | ||
1888 | if (p->verity != VERITY_HASH) | |
1889 | continue; | |
1890 | ||
1891 | if (p->minimize == MINIMIZE_OFF) | |
1892 | continue; | |
1893 | ||
1894 | assert_se(dp = p->siblings[VERITY_DATA]); | |
1895 | ||
1896 | if (dp->minimize == MINIMIZE_OFF && !(p->copy_blocks_path || p->copy_blocks_auto)) | |
1897 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1898 | "Minimize= set for verity hash partition but data partition does " | |
1899 | "not set CopyBlocks= or Minimize="); | |
1900 | ||
1901 | } | |
1902 | ||
e594a3b1 LP |
1903 | return 0; |
1904 | } | |
1905 | ||
e594a3b1 LP |
1906 | static int determine_current_padding( |
1907 | struct fdisk_context *c, | |
1908 | struct fdisk_table *t, | |
1909 | struct fdisk_partition *p, | |
994b3031 LP |
1910 | uint64_t secsz, |
1911 | uint64_t grainsz, | |
e594a3b1 LP |
1912 | uint64_t *ret) { |
1913 | ||
1914 | size_t n_partitions; | |
1915 | uint64_t offset, next = UINT64_MAX; | |
1916 | ||
1917 | assert(c); | |
1918 | assert(t); | |
1919 | assert(p); | |
1920 | ||
1921 | if (!fdisk_partition_has_end(p)) | |
1922 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1923 | ||
1924 | offset = fdisk_partition_get_end(p); | |
994b3031 LP |
1925 | assert(offset < UINT64_MAX / secsz); |
1926 | offset *= secsz; | |
e594a3b1 LP |
1927 | |
1928 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 1929 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 LP |
1930 | struct fdisk_partition *q; |
1931 | uint64_t start; | |
1932 | ||
1933 | q = fdisk_table_get_partition(t, i); | |
1934 | if (!q) | |
1935 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1936 | ||
1937 | if (fdisk_partition_is_used(q) <= 0) | |
1938 | continue; | |
1939 | ||
1940 | if (!fdisk_partition_has_start(q)) | |
1941 | continue; | |
1942 | ||
1943 | start = fdisk_partition_get_start(q); | |
994b3031 LP |
1944 | assert(start < UINT64_MAX / secsz); |
1945 | start *= secsz; | |
e594a3b1 LP |
1946 | |
1947 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1948 | next = start; | |
1949 | } | |
1950 | ||
1951 | if (next == UINT64_MAX) { | |
1952 | /* No later partition? In that case check the end of the usable area */ | |
1953 | next = fdisk_get_last_lba(c); | |
1954 | assert(next < UINT64_MAX); | |
1955 | next++; /* The last LBA is one sector before the end */ | |
1956 | ||
994b3031 LP |
1957 | assert(next < UINT64_MAX / secsz); |
1958 | next *= secsz; | |
e594a3b1 LP |
1959 | |
1960 | if (offset > next) | |
1961 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1962 | } | |
1963 | ||
1964 | assert(next >= offset); | |
994b3031 LP |
1965 | offset = round_up_size(offset, grainsz); |
1966 | next = round_down_size(next, grainsz); | |
e594a3b1 | 1967 | |
a6f44d61 | 1968 | *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */ |
e594a3b1 LP |
1969 | return 0; |
1970 | } | |
1971 | ||
1972 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { | |
1973 | _cleanup_free_ char *ids = NULL; | |
1974 | int r; | |
1975 | ||
1976 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
1977 | return -EINVAL; | |
1978 | ||
b7416360 | 1979 | ids = new(char, SD_ID128_UUID_STRING_MAX); |
e594a3b1 LP |
1980 | if (!ids) |
1981 | return -ENOMEM; | |
1982 | ||
b7416360 | 1983 | r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids)); |
e594a3b1 LP |
1984 | if (r < 0) |
1985 | return r; | |
1986 | ||
1987 | TAKE_PTR(ids); | |
1988 | return 0; | |
1989 | } | |
1990 | ||
1991 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
1992 | int r; | |
1993 | ||
1994 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
1995 | if (r < 0) | |
1996 | return r; | |
1997 | ||
1998 | r = fdisk_set_disklabel_id(c); | |
1999 | if (r < 0) | |
2000 | return r; | |
2001 | ||
2002 | return fdisk_set_ask(c, NULL, NULL); | |
2003 | } | |
2004 | ||
53171c04 | 2005 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 | 2006 | union { |
ade99252 | 2007 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
2008 | sd_id128_t id; |
2009 | } result; | |
2010 | ||
53171c04 | 2011 | assert(token); |
e594a3b1 LP |
2012 | assert(ret); |
2013 | ||
53171c04 LP |
2014 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
2015 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
2016 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
2017 | * the machine ID we don't want to leak. */ | |
e594a3b1 | 2018 | |
ade99252 | 2019 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md); |
e594a3b1 LP |
2020 | |
2021 | /* Take the first half, mark it as v4 UUID */ | |
2022 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
2023 | *ret = id128_make_v4_uuid(result.id); | |
2024 | return 0; | |
2025 | } | |
2026 | ||
37734dc6 YW |
2027 | static int context_open_and_lock_backing_fd(Context *context, const char *node) { |
2028 | _cleanup_close_ int fd = -EBADF; | |
2029 | ||
2030 | assert(context); | |
2031 | assert(node); | |
2032 | ||
2033 | if (context->backing_fd >= 0) | |
2034 | return 0; | |
2035 | ||
2036 | fd = open(node, O_RDONLY|O_CLOEXEC); | |
2037 | if (fd < 0) | |
2038 | return log_error_errno(errno, "Failed to open device '%s': %m", node); | |
2039 | ||
2040 | /* Tell udev not to interfere while we are processing the device */ | |
2041 | if (flock(fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
2042 | return log_error_errno(errno, "Failed to lock device '%s': %m", node); | |
2043 | ||
2044 | log_debug("Device %s opened and locked.", node); | |
2045 | context->backing_fd = TAKE_FD(fd); | |
2046 | return 1; | |
2047 | } | |
2048 | ||
cc751c75 | 2049 | static int context_load_partition_table(Context *context) { |
e594a3b1 LP |
2050 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
2051 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
2052 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
2053 | _cleanup_free_ char *disk_uuid_string = NULL; | |
2054 | bool from_scratch = false; | |
2055 | sd_id128_t disk_uuid; | |
2056 | size_t n_partitions; | |
994b3031 LP |
2057 | unsigned long secsz; |
2058 | uint64_t grainsz; | |
e594a3b1 LP |
2059 | int r; |
2060 | ||
2061 | assert(context); | |
170c9823 LP |
2062 | assert(!context->fdisk_context); |
2063 | assert(!context->free_areas); | |
2064 | assert(context->start == UINT64_MAX); | |
2065 | assert(context->end == UINT64_MAX); | |
2066 | assert(context->total == UINT64_MAX); | |
e594a3b1 | 2067 | |
e1878ef7 DDM |
2068 | c = fdisk_new_context(); |
2069 | if (!c) | |
2070 | return log_oom(); | |
2071 | ||
6c54e1d6 | 2072 | if (arg_sector_size > 0) |
e1878ef7 | 2073 | r = fdisk_save_user_sector_size(c, /* phy= */ 0, arg_sector_size); |
6c54e1d6 LP |
2074 | else { |
2075 | uint32_t ssz; | |
2076 | ||
37734dc6 YW |
2077 | r = context_open_and_lock_backing_fd(context, context->node); |
2078 | if (r < 0) | |
2079 | return r; | |
6c54e1d6 LP |
2080 | |
2081 | /* Auto-detect sector size if not specified. */ | |
2082 | r = probe_sector_size_prefer_ioctl(context->backing_fd, &ssz); | |
e1878ef7 | 2083 | if (r < 0) |
6c54e1d6 LP |
2084 | return log_error_errno(r, "Failed to probe sector size of '%s': %m", context->node); |
2085 | ||
2086 | r = fdisk_save_user_sector_size(c, /* phy= */ 0, ssz); | |
e1878ef7 | 2087 | } |
6c54e1d6 LP |
2088 | if (r < 0) |
2089 | return log_error_errno(r, "Failed to set sector size: %m"); | |
e1878ef7 | 2090 | |
a26f4a49 LP |
2091 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
2092 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
e1878ef7 DDM |
2093 | r = fdisk_assign_device( |
2094 | c, | |
2095 | context->backing_fd >= 0 ? FORMAT_PROC_FD_PATH(context->backing_fd) : context->node, | |
2096 | arg_dry_run); | |
170c9823 LP |
2097 | if (r == -EINVAL && arg_size_auto) { |
2098 | struct stat st; | |
2099 | ||
2100 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
2101 | * it if automatic sizing is requested. */ | |
2102 | ||
cc751c75 DDM |
2103 | if (context->backing_fd < 0) |
2104 | r = stat(context->node, &st); | |
170c9823 | 2105 | else |
cc751c75 | 2106 | r = fstat(context->backing_fd, &st); |
170c9823 | 2107 | if (r < 0) |
cc751c75 | 2108 | return log_error_errno(errno, "Failed to stat block device '%s': %m", context->node); |
170c9823 | 2109 | |
994b3031 LP |
2110 | if (S_ISREG(st.st_mode) && st.st_size == 0) { |
2111 | /* User the fallback values if we have no better idea */ | |
e1878ef7 | 2112 | context->sector_size = arg_sector_size ?: 512; |
994b3031 | 2113 | context->grain_size = 4096; |
170c9823 | 2114 | return /* from_scratch = */ true; |
994b3031 | 2115 | } |
170c9823 LP |
2116 | |
2117 | r = -EINVAL; | |
2118 | } | |
e594a3b1 | 2119 | if (r < 0) |
cc751c75 | 2120 | return log_error_errno(r, "Failed to open device '%s': %m", context->node); |
a26f4a49 | 2121 | |
cc751c75 | 2122 | if (context->backing_fd < 0) { |
a26f4a49 | 2123 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ |
37734dc6 YW |
2124 | r = context_open_and_lock_backing_fd(context, FORMAT_PROC_FD_PATH(fdisk_get_devfd(c))); |
2125 | if (r < 0) | |
2126 | return r; | |
25baae50 | 2127 | } |
e594a3b1 | 2128 | |
994b3031 LP |
2129 | /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the |
2130 | * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use | |
2131 | * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean | |
2132 | * the same thing universally. Also note that regardless what kind of sector size is in use we'll | |
2133 | * place partitions at multiples of 4K. */ | |
2134 | secsz = fdisk_get_sector_size(c); | |
2135 | ||
2136 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
983ce0b5 LP |
2137 | if (secsz < 512 || !ISPOWEROF2(secsz)) |
2138 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
994b3031 LP |
2139 | |
2140 | /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or | |
2141 | * larger */ | |
2142 | grainsz = secsz < 4096 ? 4096 : secsz; | |
2143 | ||
2144 | log_debug("Sector size of device is %lu bytes. Using grain size of %" PRIu64 ".", secsz, grainsz); | |
2145 | ||
e594a3b1 LP |
2146 | switch (arg_empty) { |
2147 | ||
2148 | case EMPTY_REFUSE: | |
2149 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
2150 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2151 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2152 | |
2153 | break; | |
2154 | ||
2155 | case EMPTY_REQUIRE: | |
2156 | /* Require an empty disk, refuse any existing partition table */ | |
2157 | r = fdisk_has_label(c); | |
2158 | if (r < 0) | |
cc751c75 | 2159 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 | 2160 | if (r > 0) |
cc751c75 | 2161 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", context->node); |
e594a3b1 LP |
2162 | |
2163 | from_scratch = true; | |
2164 | break; | |
2165 | ||
2166 | case EMPTY_ALLOW: | |
2167 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
2168 | r = fdisk_has_label(c); | |
2169 | if (r < 0) | |
cc751c75 | 2170 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 LP |
2171 | if (r > 0) { |
2172 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2173 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2174 | } else |
2175 | from_scratch = true; | |
2176 | ||
2177 | break; | |
2178 | ||
2179 | case EMPTY_FORCE: | |
a26f4a49 | 2180 | case EMPTY_CREATE: |
e594a3b1 LP |
2181 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
2182 | from_scratch = true; | |
2183 | break; | |
2184 | } | |
2185 | ||
2186 | if (from_scratch) { | |
e594a3b1 LP |
2187 | r = fdisk_create_disklabel(c, "gpt"); |
2188 | if (r < 0) | |
2189 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
2190 | ||
53171c04 | 2191 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2192 | if (r < 0) |
2193 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2194 | ||
2195 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
2196 | if (r < 0) | |
2197 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2198 | ||
2199 | goto add_initial_free_area; | |
2200 | } | |
2201 | ||
2202 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
2203 | if (r < 0) | |
2204 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
2205 | ||
2206 | r = sd_id128_from_string(disk_uuid_string, &disk_uuid); | |
2207 | if (r < 0) | |
2208 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
2209 | ||
2210 | if (sd_id128_is_null(disk_uuid)) { | |
53171c04 | 2211 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2212 | if (r < 0) |
2213 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2214 | ||
2215 | r = fdisk_set_disklabel_id(c); | |
2216 | if (r < 0) | |
2217 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2218 | } | |
2219 | ||
2220 | r = fdisk_get_partitions(c, &t); | |
2221 | if (r < 0) | |
2222 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
2223 | ||
2224 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 2225 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 | 2226 | _cleanup_free_ char *label_copy = NULL; |
03677889 | 2227 | Partition *last = NULL; |
e594a3b1 | 2228 | struct fdisk_partition *p; |
63b96eb9 | 2229 | const char *label; |
e594a3b1 LP |
2230 | uint64_t sz, start; |
2231 | bool found = false; | |
2232 | sd_id128_t ptid, id; | |
2233 | size_t partno; | |
2234 | ||
2235 | p = fdisk_table_get_partition(t, i); | |
2236 | if (!p) | |
2237 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
2238 | ||
2239 | if (fdisk_partition_is_used(p) <= 0) | |
2240 | continue; | |
2241 | ||
2242 | if (fdisk_partition_has_start(p) <= 0 || | |
2243 | fdisk_partition_has_size(p) <= 0 || | |
2244 | fdisk_partition_has_partno(p) <= 0) | |
2245 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
2246 | ||
63b96eb9 | 2247 | r = fdisk_partition_get_type_as_id128(p, &ptid); |
e594a3b1 | 2248 | if (r < 0) |
63b96eb9 | 2249 | return log_error_errno(r, "Failed to query partition type UUID: %m"); |
e594a3b1 | 2250 | |
02e32aa6 | 2251 | r = fdisk_partition_get_uuid_as_id128(p, &id); |
e594a3b1 | 2252 | if (r < 0) |
02e32aa6 | 2253 | return log_error_errno(r, "Failed to query partition UUID: %m"); |
e594a3b1 LP |
2254 | |
2255 | label = fdisk_partition_get_name(p); | |
2256 | if (!isempty(label)) { | |
2257 | label_copy = strdup(label); | |
2258 | if (!label_copy) | |
2259 | return log_oom(); | |
2260 | } | |
2261 | ||
2262 | sz = fdisk_partition_get_size(p); | |
ac33e147 | 2263 | assert(sz <= UINT64_MAX/secsz); |
994b3031 | 2264 | sz *= secsz; |
e594a3b1 LP |
2265 | |
2266 | start = fdisk_partition_get_start(p); | |
ac33e147 | 2267 | assert(start <= UINT64_MAX/secsz); |
994b3031 | 2268 | start *= secsz; |
e594a3b1 LP |
2269 | |
2270 | partno = fdisk_partition_get_partno(p); | |
2271 | ||
2272 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
2273 | left_boundary = start; | |
2274 | ||
2275 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
2276 | * an existing one assigned yet. */ | |
2277 | LIST_FOREACH(partitions, pp, context->partitions) { | |
2278 | last = pp; | |
2279 | ||
22e932f4 | 2280 | if (!sd_id128_equal(pp->type.uuid, ptid)) |
e594a3b1 LP |
2281 | continue; |
2282 | ||
2283 | if (!pp->current_partition) { | |
2284 | pp->current_uuid = id; | |
2285 | pp->current_size = sz; | |
2286 | pp->offset = start; | |
2287 | pp->partno = partno; | |
2288 | pp->current_label = TAKE_PTR(label_copy); | |
2289 | ||
2290 | pp->current_partition = p; | |
2291 | fdisk_ref_partition(p); | |
2292 | ||
994b3031 | 2293 | r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding); |
e594a3b1 LP |
2294 | if (r < 0) |
2295 | return r; | |
2296 | ||
2297 | if (pp->current_padding > 0) { | |
2298 | r = context_add_free_area(context, pp->current_padding, pp); | |
2299 | if (r < 0) | |
2300 | return r; | |
2301 | } | |
2302 | ||
2303 | found = true; | |
2304 | break; | |
2305 | } | |
2306 | } | |
2307 | ||
2308 | /* If we have no matching definition, create a new one. */ | |
2309 | if (!found) { | |
2310 | _cleanup_(partition_freep) Partition *np = NULL; | |
2311 | ||
2312 | np = partition_new(); | |
2313 | if (!np) | |
2314 | return log_oom(); | |
2315 | ||
2316 | np->current_uuid = id; | |
22e932f4 | 2317 | np->type = gpt_partition_type_from_uuid(ptid); |
e594a3b1 LP |
2318 | np->current_size = sz; |
2319 | np->offset = start; | |
2320 | np->partno = partno; | |
2321 | np->current_label = TAKE_PTR(label_copy); | |
2322 | ||
2323 | np->current_partition = p; | |
2324 | fdisk_ref_partition(p); | |
2325 | ||
994b3031 | 2326 | r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding); |
e594a3b1 LP |
2327 | if (r < 0) |
2328 | return r; | |
2329 | ||
2330 | if (np->current_padding > 0) { | |
2331 | r = context_add_free_area(context, np->current_padding, np); | |
2332 | if (r < 0) | |
2333 | return r; | |
2334 | } | |
2335 | ||
2336 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
2337 | context->n_partitions++; | |
2338 | } | |
2339 | } | |
2340 | ||
2341 | add_initial_free_area: | |
2342 | nsectors = fdisk_get_nsectors(c); | |
994b3031 LP |
2343 | assert(nsectors <= UINT64_MAX/secsz); |
2344 | nsectors *= secsz; | |
e594a3b1 LP |
2345 | |
2346 | first_lba = fdisk_get_first_lba(c); | |
994b3031 LP |
2347 | assert(first_lba <= UINT64_MAX/secsz); |
2348 | first_lba *= secsz; | |
e594a3b1 LP |
2349 | |
2350 | last_lba = fdisk_get_last_lba(c); | |
2351 | assert(last_lba < UINT64_MAX); | |
2352 | last_lba++; | |
994b3031 LP |
2353 | assert(last_lba <= UINT64_MAX/secsz); |
2354 | last_lba *= secsz; | |
e594a3b1 LP |
2355 | |
2356 | assert(last_lba >= first_lba); | |
2357 | ||
2358 | if (left_boundary == UINT64_MAX) { | |
2359 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
2360 | ||
994b3031 LP |
2361 | first_lba = round_up_size(first_lba, grainsz); |
2362 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2363 | |
2364 | if (last_lba > first_lba) { | |
2365 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
2366 | if (r < 0) | |
2367 | return r; | |
2368 | } | |
2369 | } else { | |
2370 | /* Add space left of first partition */ | |
2371 | assert(left_boundary >= first_lba); | |
2372 | ||
994b3031 LP |
2373 | first_lba = round_up_size(first_lba, grainsz); |
2374 | left_boundary = round_down_size(left_boundary, grainsz); | |
2375 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2376 | |
2377 | if (left_boundary > first_lba) { | |
2378 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
2379 | if (r < 0) | |
2380 | return r; | |
2381 | } | |
2382 | } | |
2383 | ||
2384 | context->start = first_lba; | |
2385 | context->end = last_lba; | |
2386 | context->total = nsectors; | |
994b3031 LP |
2387 | context->sector_size = secsz; |
2388 | context->grain_size = grainsz; | |
e594a3b1 LP |
2389 | context->fdisk_context = TAKE_PTR(c); |
2390 | ||
2391 | return from_scratch; | |
2392 | } | |
2393 | ||
2394 | static void context_unload_partition_table(Context *context) { | |
e594a3b1 LP |
2395 | assert(context); |
2396 | ||
80a226b2 | 2397 | LIST_FOREACH(partitions, p, context->partitions) { |
e594a3b1 LP |
2398 | |
2399 | /* Entirely remove partitions that have no configuration */ | |
2400 | if (PARTITION_IS_FOREIGN(p)) { | |
2401 | partition_unlink_and_free(context, p); | |
2402 | continue; | |
2403 | } | |
2404 | ||
2405 | /* Otherwise drop all data we read off the block device and everything we might have | |
2406 | * calculated based on it */ | |
2407 | ||
2408 | p->dropped = false; | |
2409 | p->current_size = UINT64_MAX; | |
2410 | p->new_size = UINT64_MAX; | |
2411 | p->current_padding = UINT64_MAX; | |
2412 | p->new_padding = UINT64_MAX; | |
2413 | p->partno = UINT64_MAX; | |
2414 | p->offset = UINT64_MAX; | |
2415 | ||
2416 | if (p->current_partition) { | |
2417 | fdisk_unref_partition(p->current_partition); | |
2418 | p->current_partition = NULL; | |
2419 | } | |
2420 | ||
2421 | if (p->new_partition) { | |
2422 | fdisk_unref_partition(p->new_partition); | |
2423 | p->new_partition = NULL; | |
2424 | } | |
2425 | ||
2426 | p->padding_area = NULL; | |
2427 | p->allocated_to_area = NULL; | |
2428 | ||
15d43e30 LP |
2429 | p->current_uuid = SD_ID128_NULL; |
2430 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
2431 | } |
2432 | ||
2433 | context->start = UINT64_MAX; | |
2434 | context->end = UINT64_MAX; | |
2435 | context->total = UINT64_MAX; | |
2436 | ||
2437 | if (context->fdisk_context) { | |
2438 | fdisk_unref_context(context->fdisk_context); | |
2439 | context->fdisk_context = NULL; | |
2440 | } | |
2441 | ||
2442 | context_free_free_areas(context); | |
2443 | } | |
2444 | ||
2445 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
2b59bf51 | 2446 | char *t; |
e594a3b1 LP |
2447 | |
2448 | if (from != UINT64_MAX) { | |
2449 | if (from == to || to == UINT64_MAX) | |
2b59bf51 | 2450 | t = strdup(FORMAT_BYTES(from)); |
e594a3b1 | 2451 | else |
fc03e80c | 2452 | t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 | 2453 | } else if (to != UINT64_MAX) |
fc03e80c | 2454 | t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 LP |
2455 | else { |
2456 | *ret = NULL; | |
2457 | return 0; | |
2458 | } | |
2459 | ||
2b59bf51 | 2460 | if (!t) |
e594a3b1 LP |
2461 | return log_oom(); |
2462 | ||
2b59bf51 | 2463 | *ret = t; |
e594a3b1 LP |
2464 | return 1; |
2465 | } | |
2466 | ||
2467 | static const char *partition_label(const Partition *p) { | |
2468 | assert(p); | |
2469 | ||
2470 | if (p->new_label) | |
2471 | return p->new_label; | |
2472 | ||
2473 | if (p->current_label) | |
2474 | return p->current_label; | |
2475 | ||
22e932f4 | 2476 | return gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
2477 | } |
2478 | ||
cc751c75 | 2479 | static int context_dump_partitions(Context *context) { |
e594a3b1 LP |
2480 | _cleanup_(table_unrefp) Table *t = NULL; |
2481 | uint64_t sum_padding = 0, sum_size = 0; | |
e594a3b1 | 2482 | int r; |
bf030f55 DDM |
2483 | const size_t roothash_col = 13, dropin_files_col = 14, split_path_col = 15; |
2484 | bool has_roothash = false, has_dropin_files = false, has_split_path = false; | |
e594a3b1 | 2485 | |
6a01ea4a | 2486 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
2487 | log_info("Empty partition table."); |
2488 | return 0; | |
2489 | } | |
2490 | ||
bf030f55 DDM |
2491 | t = table_new("type", |
2492 | "label", | |
2493 | "uuid", | |
2494 | "file", | |
2495 | "node", | |
2496 | "offset", | |
2497 | "old size", | |
2498 | "raw size", | |
2499 | "size", | |
2500 | "old padding", | |
2501 | "raw padding", | |
2502 | "padding", | |
2503 | "activity", | |
2504 | "roothash", | |
2505 | "drop-in files", | |
2506 | "split path"); | |
e594a3b1 LP |
2507 | if (!t) |
2508 | return log_oom(); | |
2509 | ||
a015fbe7 | 2510 | if (!DEBUG_LOGGING) { |
6a01ea4a | 2511 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 2512 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
bf030f55 DDM |
2513 | (size_t) 8, (size_t) 11, roothash_col, dropin_files_col, |
2514 | split_path_col); | |
a015fbe7 TH |
2515 | else |
2516 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
b5b7879a | 2517 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 9, (size_t) 10, |
bf030f55 DDM |
2518 | (size_t) 12, roothash_col, dropin_files_col, |
2519 | split_path_col); | |
a015fbe7 | 2520 | } |
e594a3b1 | 2521 | |
e594a3b1 | 2522 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
2523 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
2524 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
2525 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
2526 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
2527 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
2528 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
2529 | |
2530 | LIST_FOREACH(partitions, p, context->partitions) { | |
b5b7879a | 2531 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL; |
b7416360 | 2532 | char uuid_buffer[SD_ID128_UUID_STRING_MAX]; |
a015fbe7 | 2533 | const char *label, *activity = NULL; |
e594a3b1 LP |
2534 | |
2535 | if (p->dropped) | |
2536 | continue; | |
2537 | ||
a015fbe7 TH |
2538 | if (p->current_size == UINT64_MAX) |
2539 | activity = "create"; | |
2540 | else if (p->current_size != p->new_size) | |
2541 | activity = "resize"; | |
2542 | ||
e594a3b1 | 2543 | label = partition_label(p); |
cc751c75 | 2544 | partname = p->partno != UINT64_MAX ? fdisk_partname(context->node, p->partno+1) : NULL; |
e594a3b1 LP |
2545 | |
2546 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2547 | if (r < 0) | |
2548 | return r; | |
2549 | ||
2550 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2551 | if (r < 0) | |
2552 | return r; | |
2553 | ||
2554 | if (p->new_size != UINT64_MAX) | |
2555 | sum_size += p->new_size; | |
2556 | if (p->new_padding != UINT64_MAX) | |
2557 | sum_padding += p->new_padding; | |
2558 | ||
2ecc7a5b DDM |
2559 | if (p->verity != VERITY_OFF) { |
2560 | Partition *hp = p->verity == VERITY_HASH ? p : p->siblings[VERITY_HASH]; | |
2561 | ||
2562 | rh = hp->roothash ? hexmem(hp->roothash, hp->roothash_size) : strdup("TBD"); | |
b5b7879a DDM |
2563 | if (!rh) |
2564 | return log_oom(); | |
2565 | } | |
2566 | ||
e594a3b1 LP |
2567 | r = table_add_many( |
2568 | t, | |
22e932f4 | 2569 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type.uuid, uuid_buffer), |
be9ce018 | 2570 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
11749b61 | 2571 | TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid, |
d0242ac9 | 2572 | TABLE_PATH_BASENAME, p->definition_path, TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), |
a015fbe7 | 2573 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2574 | TABLE_UINT64, p->offset, |
a015fbe7 | 2575 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2576 | TABLE_UINT64, p->new_size, |
2577 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2578 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2579 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2580 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
39fc0174 | 2581 | TABLE_STRING, activity ?: "unchanged", |
b5b7879a | 2582 | TABLE_STRING, rh, |
bf030f55 DDM |
2583 | TABLE_STRV, p->drop_in_files, |
2584 | TABLE_STRING, empty_to_null(p->split_path) ?: "-"); | |
e594a3b1 | 2585 | if (r < 0) |
f987a261 | 2586 | return table_log_add_error(r); |
39fc0174 | 2587 | |
b5b7879a | 2588 | has_roothash = has_roothash || !isempty(rh); |
3ab44dbd | 2589 | has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files); |
bf030f55 | 2590 | has_split_path = has_split_path || !isempty(p->split_path); |
e594a3b1 LP |
2591 | } |
2592 | ||
6a01ea4a | 2593 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2594 | const char *a, *b; |
2595 | ||
2b59bf51 ZJS |
2596 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size)); |
2597 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding)); | |
e594a3b1 LP |
2598 | |
2599 | r = table_add_many( | |
2600 | t, | |
2601 | TABLE_EMPTY, | |
2602 | TABLE_EMPTY, | |
2603 | TABLE_EMPTY, | |
2604 | TABLE_EMPTY, | |
2605 | TABLE_EMPTY, | |
2606 | TABLE_EMPTY, | |
2607 | TABLE_EMPTY, | |
a015fbe7 | 2608 | TABLE_EMPTY, |
e594a3b1 LP |
2609 | TABLE_STRING, a, |
2610 | TABLE_EMPTY, | |
a015fbe7 TH |
2611 | TABLE_EMPTY, |
2612 | TABLE_STRING, b, | |
39fc0174 | 2613 | TABLE_EMPTY, |
b5b7879a | 2614 | TABLE_EMPTY, |
bf030f55 | 2615 | TABLE_EMPTY, |
a015fbe7 | 2616 | TABLE_EMPTY); |
e594a3b1 | 2617 | if (r < 0) |
f987a261 | 2618 | return table_log_add_error(r); |
e594a3b1 LP |
2619 | } |
2620 | ||
b5b7879a DDM |
2621 | if (!has_roothash) { |
2622 | r = table_hide_column_from_display(t, roothash_col); | |
2623 | if (r < 0) | |
2624 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2625 | } | |
2626 | ||
3ab44dbd | 2627 | if (!has_dropin_files) { |
39fc0174 RP |
2628 | r = table_hide_column_from_display(t, dropin_files_col); |
2629 | if (r < 0) | |
2630 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2631 | } | |
2632 | ||
bf030f55 DDM |
2633 | if (!has_split_path) { |
2634 | r = table_hide_column_from_display(t, split_path_col); | |
2635 | if (r < 0) | |
2636 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2637 | } | |
2638 | ||
896e678b | 2639 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2640 | } |
2641 | ||
2642 | static void context_bar_char_process_partition( | |
2643 | Context *context, | |
2644 | Partition *bar[], | |
2645 | size_t n, | |
2646 | Partition *p, | |
2647 | size_t *ret_start) { | |
2648 | ||
2649 | uint64_t from, to, total; | |
2650 | size_t x, y; | |
2651 | ||
2652 | assert(context); | |
2653 | assert(bar); | |
2654 | assert(n > 0); | |
2655 | assert(p); | |
2656 | ||
2657 | if (p->dropped) | |
2658 | return; | |
2659 | ||
2660 | assert(p->offset != UINT64_MAX); | |
2661 | assert(p->new_size != UINT64_MAX); | |
2662 | ||
2663 | from = p->offset; | |
2664 | to = from + p->new_size; | |
2665 | ||
d8daed09 TY |
2666 | assert(context->total > 0); |
2667 | total = context->total; | |
e594a3b1 | 2668 | |
d8daed09 TY |
2669 | assert(from <= total); |
2670 | x = from * n / total; | |
e594a3b1 | 2671 | |
d8daed09 TY |
2672 | assert(to <= total); |
2673 | y = to * n / total; | |
e594a3b1 LP |
2674 | |
2675 | assert(x <= y); | |
2676 | assert(y <= n); | |
2677 | ||
2678 | for (size_t i = x; i < y; i++) | |
2679 | bar[i] = p; | |
2680 | ||
2681 | *ret_start = x; | |
2682 | } | |
2683 | ||
2684 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2685 | _cleanup_free_ char *buf = NULL; | |
e594a3b1 LP |
2686 | const char *label; |
2687 | sd_id128_t id; | |
2688 | ||
2689 | /* Tries really hard to find a suitable description for this partition */ | |
2690 | ||
7b2ffb59 LP |
2691 | if (p->definition_path) |
2692 | return path_extract_filename(p->definition_path, ret); | |
e594a3b1 LP |
2693 | |
2694 | label = partition_label(p); | |
2695 | if (!isempty(label)) { | |
2696 | buf = strdup(label); | |
2697 | goto done; | |
2698 | } | |
2699 | ||
2700 | if (p->partno != UINT64_MAX) { | |
2701 | buf = fdisk_partname(node, p->partno+1); | |
2702 | goto done; | |
2703 | } | |
2704 | ||
11749b61 | 2705 | if (p->new_uuid_is_set) |
e594a3b1 LP |
2706 | id = p->new_uuid; |
2707 | else if (!sd_id128_is_null(p->current_uuid)) | |
2708 | id = p->current_uuid; | |
2709 | else | |
22e932f4 | 2710 | id = p->type.uuid; |
e594a3b1 | 2711 | |
b7416360 | 2712 | buf = strdup(SD_ID128_TO_UUID_STRING(id)); |
e594a3b1 LP |
2713 | |
2714 | done: | |
2715 | if (!buf) | |
2716 | return -ENOMEM; | |
2717 | ||
2718 | *ret = TAKE_PTR(buf); | |
2719 | return 0; | |
2720 | } | |
2721 | ||
cc751c75 | 2722 | static int context_dump_partition_bar(Context *context) { |
e594a3b1 LP |
2723 | _cleanup_free_ Partition **bar = NULL; |
2724 | _cleanup_free_ size_t *start_array = NULL; | |
03677889 | 2725 | Partition *last = NULL; |
e594a3b1 LP |
2726 | bool z = false; |
2727 | size_t c, j = 0; | |
2728 | ||
f391597c | 2729 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2730 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2731 | ||
2732 | bar = new0(Partition*, c); | |
2733 | if (!bar) | |
2734 | return log_oom(); | |
2735 | ||
2736 | start_array = new(size_t, context->n_partitions); | |
2737 | if (!start_array) | |
2738 | return log_oom(); | |
2739 | ||
2740 | LIST_FOREACH(partitions, p, context->partitions) | |
2741 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2742 | ||
2743 | putc(' ', stdout); | |
2744 | ||
2745 | for (size_t i = 0; i < c; i++) { | |
2746 | if (bar[i]) { | |
2747 | if (last != bar[i]) | |
2748 | z = !z; | |
2749 | ||
2750 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2751 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2752 | } else { | |
2753 | fputs(ansi_normal(), stdout); | |
2754 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2755 | } | |
2756 | ||
2757 | last = bar[i]; | |
2758 | } | |
2759 | ||
2760 | fputs(ansi_normal(), stdout); | |
2761 | putc('\n', stdout); | |
2762 | ||
2763 | for (size_t i = 0; i < context->n_partitions; i++) { | |
2764 | _cleanup_free_ char **line = NULL; | |
2765 | ||
2766 | line = new0(char*, c); | |
2767 | if (!line) | |
2768 | return log_oom(); | |
2769 | ||
2770 | j = 0; | |
2771 | LIST_FOREACH(partitions, p, context->partitions) { | |
2772 | _cleanup_free_ char *d = NULL; | |
2773 | j++; | |
2774 | ||
2775 | if (i < context->n_partitions - j) { | |
2776 | ||
2777 | if (line[start_array[j-1]]) { | |
2778 | const char *e; | |
2779 | ||
2780 | /* Upgrade final corner to the right with a branch to the right */ | |
2781 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
2782 | if (e) { | |
2783 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
2784 | if (!d) | |
2785 | return log_oom(); | |
2786 | } | |
2787 | } | |
2788 | ||
2789 | if (!d) { | |
2790 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
2791 | if (!d) | |
2792 | return log_oom(); | |
2793 | } | |
2794 | ||
2795 | } else if (i == context->n_partitions - j) { | |
2796 | _cleanup_free_ char *hint = NULL; | |
2797 | ||
cc751c75 | 2798 | (void) partition_hint(p, context->node, &hint); |
e594a3b1 LP |
2799 | |
2800 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
2801 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
2802 | else | |
2803 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
2804 | ||
2805 | if (!d) | |
2806 | return log_oom(); | |
2807 | } | |
2808 | ||
2809 | if (d) | |
2810 | free_and_replace(line[start_array[j-1]], d); | |
2811 | } | |
2812 | ||
2813 | putc(' ', stdout); | |
2814 | ||
2815 | j = 0; | |
2816 | while (j < c) { | |
2817 | if (line[j]) { | |
2818 | fputs(line[j], stdout); | |
2819 | j += utf8_console_width(line[j]); | |
2820 | } else { | |
2821 | putc(' ', stdout); | |
2822 | j++; | |
2823 | } | |
2824 | } | |
2825 | ||
2826 | putc('\n', stdout); | |
2827 | ||
2828 | for (j = 0; j < c; j++) | |
2829 | free(line[j]); | |
2830 | } | |
2831 | ||
2832 | return 0; | |
2833 | } | |
2834 | ||
b5b7879a DDM |
2835 | static bool context_has_roothash(Context *context) { |
2836 | LIST_FOREACH(partitions, p, context->partitions) | |
2837 | if (p->roothash) | |
2838 | return true; | |
2839 | ||
2840 | return false; | |
2841 | } | |
2842 | ||
cc751c75 | 2843 | static int context_dump(Context *context, bool late) { |
a26d463d DDM |
2844 | int r; |
2845 | ||
2846 | assert(context); | |
a26d463d DDM |
2847 | |
2848 | if (arg_pretty == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2849 | return 0; | |
2850 | ||
b5b7879a DDM |
2851 | /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes |
2852 | * in the output. */ | |
2853 | if (!late && !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2854 | return 0; | |
2855 | ||
2856 | /* If we're not outputting JSON, only dump again after doing all operations if there are any | |
2857 | * roothashes that we need to communicate to the user. */ | |
2858 | if (late && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !context_has_roothash(context)) | |
2859 | return 0; | |
2860 | ||
cc751c75 | 2861 | r = context_dump_partitions(context); |
a26d463d DDM |
2862 | if (r < 0) |
2863 | return r; | |
2864 | ||
b5b7879a DDM |
2865 | /* Make sure we only write the partition bar once, even if we're writing the partition table twice to |
2866 | * communicate roothashes. */ | |
2867 | if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !late) { | |
a26d463d DDM |
2868 | putc('\n', stdout); |
2869 | ||
cc751c75 | 2870 | r = context_dump_partition_bar(context); |
a26d463d DDM |
2871 | if (r < 0) |
2872 | return r; | |
2873 | ||
2874 | putc('\n', stdout); | |
2875 | } | |
2876 | ||
2877 | fflush(stdout); | |
2878 | ||
2879 | return 0; | |
2880 | } | |
2881 | ||
2882 | ||
e594a3b1 | 2883 | static bool context_changed(const Context *context) { |
03677889 | 2884 | assert(context); |
e594a3b1 LP |
2885 | |
2886 | LIST_FOREACH(partitions, p, context->partitions) { | |
2887 | if (p->dropped) | |
2888 | continue; | |
2889 | ||
2890 | if (p->allocated_to_area) | |
2891 | return true; | |
2892 | ||
2893 | if (p->new_size != p->current_size) | |
2894 | return true; | |
2895 | } | |
2896 | ||
2897 | return false; | |
2898 | } | |
2899 | ||
81873a6b | 2900 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
2901 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
2902 | int r; | |
2903 | ||
2904 | assert(context); | |
81873a6b LP |
2905 | assert(offset != UINT64_MAX); |
2906 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
2907 | |
2908 | probe = blkid_new_probe(); | |
2909 | if (!probe) | |
2910 | return log_oom(); | |
2911 | ||
e594a3b1 | 2912 | errno = 0; |
81873a6b | 2913 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 2914 | if (r < 0) |
81873a6b | 2915 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
2916 | |
2917 | errno = 0; | |
2918 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
2919 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
2920 | blkid_probe_enable_partitions(probe, true) < 0 || | |
2921 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 2922 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
2923 | |
2924 | for (;;) { | |
2925 | errno = 0; | |
2926 | r = blkid_do_probe(probe); | |
2927 | if (r < 0) | |
2928 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
2929 | if (r > 0) | |
2930 | break; | |
2931 | ||
2932 | errno = 0; | |
2933 | if (blkid_do_wipe(probe, false) < 0) | |
2934 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
2935 | } | |
2936 | ||
e594a3b1 LP |
2937 | return 0; |
2938 | } | |
2939 | ||
81873a6b LP |
2940 | static int context_wipe_partition(Context *context, Partition *p) { |
2941 | int r; | |
2942 | ||
2943 | assert(context); | |
2944 | assert(p); | |
2945 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
2946 | ||
2947 | assert(p->offset != UINT64_MAX); | |
2948 | assert(p->new_size != UINT64_MAX); | |
2949 | ||
2950 | r = context_wipe_range(context, p->offset, p->new_size); | |
2951 | if (r < 0) | |
2952 | return r; | |
2953 | ||
2954 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
2955 | return 0; | |
2956 | } | |
2957 | ||
2958 | static int context_discard_range( | |
2959 | Context *context, | |
2960 | uint64_t offset, | |
2961 | uint64_t size) { | |
2962 | ||
e594a3b1 LP |
2963 | struct stat st; |
2964 | int fd; | |
2965 | ||
2966 | assert(context); | |
2967 | assert(offset != UINT64_MAX); | |
2968 | assert(size != UINT64_MAX); | |
2969 | ||
2970 | if (size <= 0) | |
2971 | return 0; | |
2972 | ||
a26f4a49 | 2973 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
2974 | |
2975 | if (fstat(fd, &st) < 0) | |
2976 | return -errno; | |
2977 | ||
2978 | if (S_ISREG(st.st_mode)) { | |
2979 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
2980 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2981 | return -EOPNOTSUPP; | |
2982 | ||
2983 | return -errno; | |
2984 | } | |
2985 | ||
2986 | return 1; | |
2987 | } | |
2988 | ||
2989 | if (S_ISBLK(st.st_mode)) { | |
2990 | uint64_t range[2], end; | |
2991 | ||
994b3031 | 2992 | range[0] = round_up_size(offset, context->sector_size); |
e594a3b1 | 2993 | |
55d38014 LP |
2994 | if (offset > UINT64_MAX - size) |
2995 | return -ERANGE; | |
2996 | ||
e594a3b1 LP |
2997 | end = offset + size; |
2998 | if (end <= range[0]) | |
2999 | return 0; | |
3000 | ||
994b3031 | 3001 | range[1] = round_down_size(end - range[0], context->sector_size); |
e594a3b1 LP |
3002 | if (range[1] <= 0) |
3003 | return 0; | |
3004 | ||
3005 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
3006 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
3007 | return -EOPNOTSUPP; | |
3008 | ||
3009 | return -errno; | |
3010 | } | |
3011 | ||
3012 | return 1; | |
3013 | } | |
3014 | ||
3015 | return -EOPNOTSUPP; | |
3016 | } | |
3017 | ||
3018 | static int context_discard_partition(Context *context, Partition *p) { | |
3019 | int r; | |
3020 | ||
3021 | assert(context); | |
3022 | assert(p); | |
3023 | ||
3024 | assert(p->offset != UINT64_MAX); | |
3025 | assert(p->new_size != UINT64_MAX); | |
3026 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
3027 | ||
3028 | if (!arg_discard) | |
3029 | return 0; | |
3030 | ||
3031 | r = context_discard_range(context, p->offset, p->new_size); | |
3032 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 3033 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
3034 | return 0; |
3035 | } | |
22163eb5 LP |
3036 | if (r == -EBUSY) { |
3037 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
3038 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
3039 | return 0; | |
3040 | } | |
e594a3b1 LP |
3041 | if (r == 0) { |
3042 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
3043 | return 0; | |
3044 | } | |
3045 | if (r < 0) | |
5b5109e2 | 3046 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 3047 | |
5b5109e2 | 3048 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
3049 | return 1; |
3050 | } | |
3051 | ||
3052 | static int context_discard_gap_after(Context *context, Partition *p) { | |
3053 | uint64_t gap, next = UINT64_MAX; | |
e594a3b1 LP |
3054 | int r; |
3055 | ||
3056 | assert(context); | |
3057 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
3058 | ||
5113436b AF |
3059 | if (!arg_discard) |
3060 | return 0; | |
3061 | ||
e594a3b1 LP |
3062 | if (p) |
3063 | gap = p->offset + p->new_size; | |
3064 | else | |
771805eb SS |
3065 | /* The context start gets rounded up to grain_size, however |
3066 | * existing partitions may be before that so ensure the gap | |
3067 | * starts at the first actually usable lba | |
3068 | */ | |
3069 | gap = fdisk_get_first_lba(context->fdisk_context) * context->sector_size; | |
e594a3b1 LP |
3070 | |
3071 | LIST_FOREACH(partitions, q, context->partitions) { | |
3072 | if (q->dropped) | |
3073 | continue; | |
3074 | ||
3075 | assert(q->offset != UINT64_MAX); | |
3076 | assert(q->new_size != UINT64_MAX); | |
3077 | ||
3078 | if (q->offset < gap) | |
3079 | continue; | |
3080 | ||
3081 | if (next == UINT64_MAX || q->offset < next) | |
3082 | next = q->offset; | |
3083 | } | |
3084 | ||
3085 | if (next == UINT64_MAX) { | |
771805eb | 3086 | next = (fdisk_get_last_lba(context->fdisk_context) + 1) * context->sector_size; |
e594a3b1 LP |
3087 | if (gap > next) |
3088 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
3089 | } | |
3090 | ||
3091 | assert(next >= gap); | |
3092 | r = context_discard_range(context, gap, next - gap); | |
3093 | if (r == -EOPNOTSUPP) { | |
3094 | if (p) | |
5b5109e2 | 3095 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 3096 | else |
5b5109e2 | 3097 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
3098 | return 0; |
3099 | } | |
3100 | if (r == 0) /* Too short */ | |
3101 | return 0; | |
3102 | if (r < 0) { | |
3103 | if (p) | |
3104 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
3105 | else | |
3106 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
3107 | } | |
3108 | ||
3109 | if (p) | |
3110 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
3111 | else | |
3112 | log_info("Successfully discarded gap at beginning of disk."); | |
3113 | ||
3114 | return 0; | |
3115 | } | |
3116 | ||
cc751c75 | 3117 | static int context_wipe_and_discard(Context *context) { |
e594a3b1 LP |
3118 | int r; |
3119 | ||
3120 | assert(context); | |
3121 | ||
3122 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if | |
3123 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
3124 | * device in one go early on. */ | |
3125 | ||
3126 | LIST_FOREACH(partitions, p, context->partitions) { | |
3127 | ||
3128 | if (!p->allocated_to_area) | |
3129 | continue; | |
3130 | ||
8275334b | 3131 | if (partition_defer(p)) |
81d1098b DDM |
3132 | continue; |
3133 | ||
e594a3b1 LP |
3134 | r = context_wipe_partition(context, p); |
3135 | if (r < 0) | |
3136 | return r; | |
3137 | ||
cc751c75 | 3138 | if (!context->from_scratch) { |
f0cb1b95 LP |
3139 | r = context_discard_partition(context, p); |
3140 | if (r < 0) | |
3141 | return r; | |
3142 | ||
e594a3b1 LP |
3143 | r = context_discard_gap_after(context, p); |
3144 | if (r < 0) | |
3145 | return r; | |
3146 | } | |
3147 | } | |
3148 | ||
cc751c75 | 3149 | if (!context->from_scratch) { |
e594a3b1 LP |
3150 | r = context_discard_gap_after(context, NULL); |
3151 | if (r < 0) | |
3152 | return r; | |
3153 | } | |
3154 | ||
3155 | return 0; | |
3156 | } | |
3157 | ||
a09ae915 DDM |
3158 | typedef struct DecryptedPartitionTarget { |
3159 | int fd; | |
fd9b68d9 | 3160 | char *dm_name; |
a09ae915 DDM |
3161 | char *volume; |
3162 | struct crypt_device *device; | |
3163 | } DecryptedPartitionTarget; | |
3164 | ||
3165 | static DecryptedPartitionTarget* decrypted_partition_target_free(DecryptedPartitionTarget *t) { | |
3166 | #ifdef HAVE_LIBCRYPTSETUP | |
a09ae915 DDM |
3167 | int r; |
3168 | ||
3169 | if (!t) | |
3170 | return NULL; | |
3171 | ||
a09ae915 DDM |
3172 | safe_close(t->fd); |
3173 | ||
fd9b68d9 DDM |
3174 | /* udev or so might access out block device in the background while we are done. Let's hence |
3175 | * force detach the volume. We sync'ed before, hence this should be safe. */ | |
3176 | r = sym_crypt_deactivate_by_name(t->device, t->dm_name, CRYPT_DEACTIVATE_FORCE); | |
3177 | if (r < 0) | |
3178 | log_warning_errno(r, "Failed to deactivate LUKS device, ignoring: %m"); | |
a09ae915 DDM |
3179 | |
3180 | sym_crypt_free(t->device); | |
fd9b68d9 | 3181 | free(t->dm_name); |
a09ae915 DDM |
3182 | free(t->volume); |
3183 | free(t); | |
3184 | #endif | |
3185 | return NULL; | |
3186 | } | |
3187 | ||
a64769d6 DDM |
3188 | typedef struct { |
3189 | LoopDevice *loop; | |
3190 | int fd; | |
3191 | char *path; | |
3192 | int whole_fd; | |
a09ae915 | 3193 | DecryptedPartitionTarget *decrypted; |
a64769d6 DDM |
3194 | } PartitionTarget; |
3195 | ||
3196 | static int partition_target_fd(PartitionTarget *t) { | |
3197 | assert(t); | |
3198 | assert(t->loop || t->fd >= 0 || t->whole_fd >= 0); | |
a09ae915 DDM |
3199 | |
3200 | if (t->decrypted) | |
3201 | return t->decrypted->fd; | |
3202 | ||
3203 | if (t->loop) | |
3204 | return t->loop->fd; | |
3205 | ||
3206 | if (t->fd >= 0) | |
3207 | return t->fd; | |
3208 | ||
3209 | return t->whole_fd; | |
a64769d6 DDM |
3210 | } |
3211 | ||
3212 | static const char* partition_target_path(PartitionTarget *t) { | |
3213 | assert(t); | |
3214 | assert(t->loop || t->path); | |
a09ae915 DDM |
3215 | |
3216 | if (t->decrypted) | |
3217 | return t->decrypted->volume; | |
3218 | ||
3219 | if (t->loop) | |
3220 | return t->loop->node; | |
3221 | ||
3222 | return t->path; | |
a64769d6 DDM |
3223 | } |
3224 | ||
3225 | static PartitionTarget *partition_target_free(PartitionTarget *t) { | |
3226 | if (!t) | |
3227 | return NULL; | |
3228 | ||
a09ae915 | 3229 | decrypted_partition_target_free(t->decrypted); |
a64769d6 DDM |
3230 | loop_device_unref(t->loop); |
3231 | safe_close(t->fd); | |
3232 | unlink_and_free(t->path); | |
3233 | ||
3234 | return mfree(t); | |
3235 | } | |
3236 | ||
3237 | DEFINE_TRIVIAL_CLEANUP_FUNC(PartitionTarget*, partition_target_free); | |
3238 | ||
d3201eb4 DDM |
3239 | static int prepare_temporary_file(PartitionTarget *t, uint64_t size) { |
3240 | _cleanup_(unlink_and_freep) char *temp = NULL; | |
254d1313 | 3241 | _cleanup_close_ int fd = -EBADF; |
d3201eb4 DDM |
3242 | const char *vt; |
3243 | int r; | |
3244 | ||
3245 | assert(t); | |
3246 | ||
3247 | r = var_tmp_dir(&vt); | |
3248 | if (r < 0) | |
3249 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
3250 | ||
3251 | temp = path_join(vt, "repart-XXXXXX"); | |
3252 | if (!temp) | |
3253 | return log_oom(); | |
3254 | ||
3255 | fd = mkostemp_safe(temp); | |
3256 | if (fd < 0) | |
3257 | return log_error_errno(fd, "Failed to create temporary file: %m"); | |
3258 | ||
3259 | if (ftruncate(fd, size) < 0) | |
3260 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
3261 | FORMAT_BYTES(size)); | |
3262 | ||
3263 | t->fd = TAKE_FD(fd); | |
3264 | t->path = TAKE_PTR(temp); | |
3265 | ||
3266 | return 0; | |
3267 | } | |
3268 | ||
a64769d6 DDM |
3269 | static int partition_target_prepare( |
3270 | Context *context, | |
3271 | Partition *p, | |
3272 | uint64_t size, | |
3273 | bool need_path, | |
3274 | PartitionTarget **ret) { | |
3275 | ||
3276 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; | |
d3201eb4 DDM |
3277 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
3278 | int whole_fd, r; | |
a64769d6 DDM |
3279 | |
3280 | assert(context); | |
3281 | assert(p); | |
3282 | assert(ret); | |
3283 | ||
3284 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3285 | ||
6b1ea55e | 3286 | t = new(PartitionTarget, 1); |
a64769d6 DDM |
3287 | if (!t) |
3288 | return log_oom(); | |
6b1ea55e | 3289 | *t = (PartitionTarget) { |
254d1313 ZJS |
3290 | .fd = -EBADF, |
3291 | .whole_fd = -EBADF, | |
6b1ea55e | 3292 | }; |
a64769d6 | 3293 | |
d3201eb4 DDM |
3294 | if (!need_path) { |
3295 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3296 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
a64769d6 | 3297 | |
d3201eb4 DDM |
3298 | t->whole_fd = whole_fd; |
3299 | *ret = TAKE_PTR(t); | |
3300 | return 0; | |
3301 | } | |
a64769d6 | 3302 | |
d3201eb4 DDM |
3303 | /* Loopback block devices are not only useful to turn regular files into block devices, but |
3304 | * also to cut out sections of block devices into new block devices. */ | |
a64769d6 | 3305 | |
fc10b158 DDM |
3306 | if (arg_offline <= 0) { |
3307 | r = loop_device_make(whole_fd, O_RDWR, p->offset, size, 0, 0, LOCK_EX, &d); | |
3308 | if (r < 0 && (arg_offline == 0 || (r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)))) | |
3309 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); | |
3310 | if (r >= 0) { | |
3311 | t->loop = TAKE_PTR(d); | |
3312 | *ret = TAKE_PTR(t); | |
3313 | return 0; | |
3314 | } | |
3315 | ||
3316 | log_debug_errno(r, "No access to loop devices, falling back to a regular file"); | |
d3201eb4 | 3317 | } |
a64769d6 | 3318 | |
d3201eb4 DDM |
3319 | /* If we can't allocate a loop device, let's write to a regular file that we copy into the final |
3320 | * image so we can run in containers and without needing root privileges. On filesystems with | |
3321 | * reflinking support, we can take advantage of this and just reflink the result into the image. | |
3322 | */ | |
a64769d6 | 3323 | |
d3201eb4 DDM |
3324 | r = prepare_temporary_file(t, size); |
3325 | if (r < 0) | |
3326 | return r; | |
a64769d6 DDM |
3327 | |
3328 | *ret = TAKE_PTR(t); | |
3329 | ||
3330 | return 0; | |
3331 | } | |
3332 | ||
3333 | static int partition_target_grow(PartitionTarget *t, uint64_t size) { | |
3334 | int r; | |
3335 | ||
3336 | assert(t); | |
a09ae915 | 3337 | assert(!t->decrypted); |
a64769d6 DDM |
3338 | |
3339 | if (t->loop) { | |
3340 | r = loop_device_refresh_size(t->loop, UINT64_MAX, size); | |
3341 | if (r < 0) | |
3342 | return log_error_errno(r, "Failed to refresh loopback device size: %m"); | |
3343 | } else if (t->fd >= 0) { | |
3344 | if (ftruncate(t->fd, size) < 0) | |
3345 | return log_error_errno(errno, "Failed to grow '%s' to %s by truncation: %m", | |
3346 | t->path, FORMAT_BYTES(size)); | |
3347 | } | |
3348 | ||
3349 | return 0; | |
3350 | } | |
3351 | ||
3352 | static int partition_target_sync(Context *context, Partition *p, PartitionTarget *t) { | |
3353 | int whole_fd, r; | |
3354 | ||
3355 | assert(context); | |
3356 | assert(p); | |
3357 | assert(t); | |
3358 | ||
3359 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3360 | ||
a09ae915 DDM |
3361 | if (t->decrypted && fsync(t->decrypted->fd) < 0) |
3362 | return log_error_errno(errno, "Failed to sync changes to '%s': %m", t->decrypted->volume); | |
3363 | ||
a64769d6 DDM |
3364 | if (t->loop) { |
3365 | r = loop_device_sync(t->loop); | |
3366 | if (r < 0) | |
3367 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3368 | } else if (t->fd >= 0) { | |
e21be797 DDM |
3369 | struct stat st; |
3370 | ||
a64769d6 DDM |
3371 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) |
3372 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3373 | ||
6eccec00 DDM |
3374 | if (lseek(t->fd, 0, SEEK_SET) == (off_t) -1) |
3375 | return log_error_errno(errno, "Failed to seek to start of temporary file: %m"); | |
3376 | ||
e21be797 DDM |
3377 | if (fstat(t->fd, &st) < 0) |
3378 | return log_error_errno(errno, "Failed to stat temporary file: %m"); | |
3379 | ||
3380 | if (st.st_size > (off_t) p->new_size) | |
3381 | return log_error_errno(SYNTHETIC_ERRNO(ENOSPC), | |
3382 | "Partition %" PRIu64 "'s contents (%s) don't fit in the partition (%s)", | |
3383 | p->partno, FORMAT_BYTES(st.st_size), FORMAT_BYTES(p->new_size)); | |
3384 | ||
a64769d6 DDM |
3385 | r = copy_bytes(t->fd, whole_fd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_FSYNC); |
3386 | if (r < 0) | |
3387 | return log_error_errno(r, "Failed to copy bytes to partition: %m"); | |
3388 | } else { | |
3389 | if (fsync(t->whole_fd) < 0) | |
3390 | return log_error_errno(errno, "Failed to sync changes: %m"); | |
3391 | } | |
3392 | ||
3393 | return 0; | |
3394 | } | |
3395 | ||
a09ae915 | 3396 | static int partition_encrypt(Context *context, Partition *p, PartitionTarget *target, bool offline) { |
48a09a8f | 3397 | #if HAVE_LIBCRYPTSETUP && HAVE_CRYPT_SET_DATA_OFFSET && HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE && HAVE_CRYPT_REENCRYPT |
a09ae915 | 3398 | const char *node = partition_target_path(target); |
48a09a8f | 3399 | struct crypt_params_luks2 luks_params = { |
922576e4 DDM |
3400 | .label = strempty(ASSERT_PTR(p)->new_label), |
3401 | .sector_size = ASSERT_PTR(context)->sector_size, | |
a09ae915 | 3402 | .data_device = offline ? node : NULL, |
48a09a8f DDM |
3403 | }; |
3404 | struct crypt_params_reencrypt reencrypt_params = { | |
3405 | .mode = CRYPT_REENCRYPT_ENCRYPT, | |
3406 | .direction = CRYPT_REENCRYPT_BACKWARD, | |
3407 | .resilience = "datashift", | |
3408 | .data_shift = LUKS2_METADATA_SIZE / 512, | |
3409 | .luks2 = &luks_params, | |
3410 | .flags = CRYPT_REENCRYPT_INITIALIZE_ONLY|CRYPT_REENCRYPT_MOVE_FIRST_SEGMENT, | |
3411 | }; | |
0d12936d | 3412 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
48a09a8f DDM |
3413 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; |
3414 | _cleanup_fclose_ FILE *h = NULL; | |
a09ae915 | 3415 | _cleanup_free_ char *hp = NULL, *vol = NULL, *dm_name = NULL; |
48a09a8f DDM |
3416 | const char *passphrase = NULL; |
3417 | size_t passphrase_size = 0; | |
0b75744d | 3418 | const char *vt; |
b9df3536 LP |
3419 | int r; |
3420 | ||
994b3031 | 3421 | assert(context); |
b9df3536 | 3422 | assert(p); |
889914ef LP |
3423 | assert(p->encrypt != ENCRYPT_OFF); |
3424 | ||
0d12936d LP |
3425 | r = dlopen_cryptsetup(); |
3426 | if (r < 0) | |
3427 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
3428 | ||
b9df3536 LP |
3429 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); |
3430 | ||
a09ae915 DDM |
3431 | if (offline) { |
3432 | r = var_tmp_dir(&vt); | |
3433 | if (r < 0) | |
3434 | return log_error_errno(r, "Failed to determine temporary files directory: %m"); | |
0b75744d | 3435 | |
a09ae915 DDM |
3436 | r = fopen_temporary_child(vt, &h, &hp); |
3437 | if (r < 0) | |
3438 | return log_error_errno(r, "Failed to create temporary LUKS header file: %m"); | |
48a09a8f | 3439 | |
a09ae915 DDM |
3440 | /* Weird cryptsetup requirement which requires the header file to be the size of at least one |
3441 | * sector. */ | |
3442 | r = ftruncate(fileno(h), context->sector_size); | |
3443 | if (r < 0) | |
3444 | return log_error_errno(r, "Failed to grow temporary LUKS header file: %m"); | |
3445 | } else { | |
3446 | if (asprintf(&dm_name, "luks-repart-%08" PRIx64, random_u64()) < 0) | |
3447 | return log_oom(); | |
3448 | ||
3449 | vol = path_join("/dev/mapper/", dm_name); | |
3450 | if (!vol) | |
3451 | return log_oom(); | |
3452 | } | |
48a09a8f | 3453 | |
a09ae915 | 3454 | r = sym_crypt_init(&cd, offline ? hp : node); |
48a09a8f DDM |
3455 | if (r < 0) |
3456 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", hp); | |
b9df3536 LP |
3457 | |
3458 | cryptsetup_enable_logging(cd); | |
3459 | ||
a09ae915 DDM |
3460 | if (offline) { |
3461 | /* Disable kernel keyring usage by libcryptsetup as a workaround for | |
3462 | * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/273. This makes sure that we can | |
3463 | * do offline encryption even when repart is running in a container. */ | |
3464 | r = sym_crypt_volume_key_keyring(cd, false); | |
3465 | if (r < 0) | |
3466 | return log_error_errno(r, "Failed to disable kernel keyring: %m"); | |
48a09a8f | 3467 | |
a09ae915 DDM |
3468 | r = sym_crypt_metadata_locking(cd, false); |
3469 | if (r < 0) | |
3470 | return log_error_errno(r, "Failed to disable metadata locking: %m"); | |
48a09a8f | 3471 | |
a09ae915 DDM |
3472 | r = sym_crypt_set_data_offset(cd, LUKS2_METADATA_SIZE / 512); |
3473 | if (r < 0) | |
3474 | return log_error_errno(r, "Failed to set data offset: %m"); | |
3475 | } | |
48a09a8f | 3476 | |
0d12936d | 3477 | r = sym_crypt_format(cd, |
b9df3536 LP |
3478 | CRYPT_LUKS2, |
3479 | "aes", | |
3480 | "xts-plain64", | |
15cad3a2 | 3481 | SD_ID128_TO_UUID_STRING(p->luks_uuid), |
98e0456e DDM |
3482 | NULL, |
3483 | VOLUME_KEY_SIZE, | |
48a09a8f | 3484 | &luks_params); |
b9df3536 LP |
3485 | if (r < 0) |
3486 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
3487 | ||
889914ef LP |
3488 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
3489 | r = sym_crypt_keyslot_add_by_volume_key( | |
3490 | cd, | |
3491 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3492 | NULL, |
3493 | VOLUME_KEY_SIZE, | |
889914ef LP |
3494 | strempty(arg_key), |
3495 | arg_key_size); | |
3496 | if (r < 0) | |
3497 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
48a09a8f DDM |
3498 | |
3499 | passphrase = strempty(arg_key); | |
3500 | passphrase_size = arg_key_size; | |
889914ef LP |
3501 | } |
3502 | ||
3503 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
3504 | #if HAVE_TPM2 | |
889914ef LP |
3505 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; |
3506 | _cleanup_(erase_and_freep) void *secret = NULL; | |
02ef97cd | 3507 | _cleanup_free_ void *pubkey = NULL; |
acbb504e WR |
3508 | _cleanup_free_ void *blob = NULL, *hash = NULL, *srk_buf = NULL; |
3509 | size_t secret_size, blob_size, hash_size, pubkey_size = 0, srk_buf_size = 0; | |
5e476b85 | 3510 | ssize_t base64_encoded_size; |
2b92a672 | 3511 | uint16_t pcr_bank, primary_alg; |
889914ef LP |
3512 | int keyslot; |
3513 | ||
02ef97cd LP |
3514 | if (arg_tpm2_public_key_pcr_mask != 0) { |
3515 | r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey, &pubkey_size); | |
3516 | if (r < 0) { | |
3517 | if (arg_tpm2_public_key || r != -ENOENT) | |
3518 | return log_error_errno(r, "Failed read TPM PCR public key: %m"); | |
3519 | ||
3520 | log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m"); | |
3521 | arg_tpm2_public_key_pcr_mask = 0; | |
3522 | } | |
3523 | } | |
3524 | ||
d9b5841d LP |
3525 | r = tpm2_seal(arg_tpm2_device, |
3526 | arg_tpm2_pcr_mask, | |
02ef97cd LP |
3527 | pubkey, pubkey_size, |
3528 | arg_tpm2_public_key_pcr_mask, | |
d9b5841d LP |
3529 | /* pin= */ NULL, |
3530 | &secret, &secret_size, | |
3531 | &blob, &blob_size, | |
3532 | &hash, &hash_size, | |
3533 | &pcr_bank, | |
acbb504e WR |
3534 | &primary_alg, |
3535 | &srk_buf, | |
3536 | &srk_buf_size); | |
889914ef LP |
3537 | if (r < 0) |
3538 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
3539 | ||
5e476b85 LP |
3540 | base64_encoded_size = base64mem(secret, secret_size, &base64_encoded); |
3541 | if (base64_encoded_size < 0) | |
3542 | return log_error_errno(base64_encoded_size, "Failed to base64 encode secret key: %m"); | |
889914ef LP |
3543 | |
3544 | r = cryptsetup_set_minimal_pbkdf(cd); | |
3545 | if (r < 0) | |
3546 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
3547 | ||
3548 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
3549 | cd, | |
3550 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3551 | NULL, |
3552 | VOLUME_KEY_SIZE, | |
889914ef | 3553 | base64_encoded, |
5e476b85 | 3554 | base64_encoded_size); |
889914ef | 3555 | if (keyslot < 0) |
48a09a8f | 3556 | return log_error_errno(keyslot, "Failed to add new TPM2 key: %m"); |
889914ef | 3557 | |
f0f4fcae LP |
3558 | r = tpm2_make_luks2_json( |
3559 | keyslot, | |
3560 | arg_tpm2_pcr_mask, | |
3561 | pcr_bank, | |
02ef97cd LP |
3562 | pubkey, pubkey_size, |
3563 | arg_tpm2_public_key_pcr_mask, | |
f0f4fcae LP |
3564 | primary_alg, |
3565 | blob, blob_size, | |
3566 | hash, hash_size, | |
aae6eb96 | 3567 | NULL, 0, /* no salt because tpm2_seal has no pin */ |
acbb504e | 3568 | srk_buf, srk_buf_size, |
f0f4fcae LP |
3569 | 0, |
3570 | &v); | |
889914ef LP |
3571 | if (r < 0) |
3572 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
3573 | ||
3574 | r = cryptsetup_add_token_json(cd, v); | |
3575 | if (r < 0) | |
3576 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
48a09a8f DDM |
3577 | |
3578 | passphrase = base64_encoded; | |
3579 | passphrase_size = strlen(base64_encoded); | |
889914ef LP |
3580 | #else |
3581 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3582 | "Support for TPM2 enrollment not enabled."); | |
3583 | #endif | |
3584 | } | |
b9df3536 | 3585 | |
a09ae915 DDM |
3586 | if (offline) { |
3587 | r = sym_crypt_reencrypt_init_by_passphrase( | |
3588 | cd, | |
3589 | NULL, | |
3590 | passphrase, | |
3591 | passphrase_size, | |
3592 | CRYPT_ANY_SLOT, | |
3593 | 0, | |
3594 | sym_crypt_get_cipher(cd), | |
3595 | sym_crypt_get_cipher_mode(cd), | |
3596 | &reencrypt_params); | |
3597 | if (r < 0) | |
3598 | return log_error_errno(r, "Failed to prepare for reencryption: %m"); | |
b9df3536 | 3599 | |
a09ae915 DDM |
3600 | /* crypt_reencrypt_init_by_passphrase() doesn't actually put the LUKS header at the front, we |
3601 | * have to do that ourselves. */ | |
b9df3536 | 3602 | |
a09ae915 DDM |
3603 | sym_crypt_free(cd); |
3604 | cd = NULL; | |
b9df3536 | 3605 | |
a09ae915 DDM |
3606 | r = sym_crypt_init(&cd, node); |
3607 | if (r < 0) | |
3608 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); | |
b9df3536 | 3609 | |
a09ae915 DDM |
3610 | r = sym_crypt_header_restore(cd, CRYPT_LUKS2, hp); |
3611 | if (r < 0) | |
3612 | return log_error_errno(r, "Failed to place new LUKS header at head of %s: %m", node); | |
b9df3536 | 3613 | |
a09ae915 | 3614 | reencrypt_params.flags &= ~CRYPT_REENCRYPT_INITIALIZE_ONLY; |
b9df3536 | 3615 | |
a09ae915 DDM |
3616 | r = sym_crypt_reencrypt_init_by_passphrase( |
3617 | cd, | |
3618 | NULL, | |
3619 | passphrase, | |
3620 | passphrase_size, | |
3621 | CRYPT_ANY_SLOT, | |
3622 | 0, | |
3623 | NULL, | |
3624 | NULL, | |
3625 | &reencrypt_params); | |
3626 | if (r < 0) | |
3627 | return log_error_errno(r, "Failed to load reencryption context: %m"); | |
b9df3536 | 3628 | |
a09ae915 DDM |
3629 | r = sym_crypt_reencrypt(cd, NULL); |
3630 | if (r < 0) | |
3631 | return log_error_errno(r, "Failed to encrypt %s: %m", node); | |
3632 | } else { | |
3633 | _cleanup_free_ DecryptedPartitionTarget *t = NULL; | |
3634 | _cleanup_close_ int dev_fd = -1; | |
3635 | ||
3636 | r = sym_crypt_activate_by_volume_key( | |
3637 | cd, | |
3638 | dm_name, | |
3639 | NULL, | |
3640 | VOLUME_KEY_SIZE, | |
3641 | arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0); | |
3642 | if (r < 0) | |
3643 | return log_error_errno(r, "Failed to activate LUKS superblock: %m"); | |
3644 | ||
3645 | dev_fd = open(vol, O_RDWR|O_CLOEXEC|O_NOCTTY); | |
3646 | if (dev_fd < 0) | |
3647 | return log_error_errno(errno, "Failed to open LUKS volume '%s': %m", vol); | |
3648 | ||
3649 | if (flock(dev_fd, LOCK_EX) < 0) | |
3650 | return log_error_errno(errno, "Failed to lock '%s': %m", vol); | |
3651 | ||
3652 | t = new(DecryptedPartitionTarget, 1); | |
3653 | if (!t) | |
3654 | return log_oom(); | |
3655 | ||
3656 | *t = (DecryptedPartitionTarget) { | |
3657 | .fd = TAKE_FD(dev_fd), | |
fd9b68d9 | 3658 | .dm_name = TAKE_PTR(dm_name), |
a09ae915 DDM |
3659 | .volume = TAKE_PTR(vol), |
3660 | .device = TAKE_PTR(cd), | |
3661 | }; | |
3662 | ||
3663 | target->decrypted = TAKE_PTR(t); | |
3664 | } | |
48a09a8f DDM |
3665 | |
3666 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
b9df3536 | 3667 | |
3dd8ae5c | 3668 | return 0; |
48a09a8f DDM |
3669 | #else |
3670 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3671 | "libcryptsetup is not supported or is missing required symbols, cannot encrypt: %m"); | |
3dd8ae5c | 3672 | #endif |
b9df3536 LP |
3673 | } |
3674 | ||
2b392d86 DDM |
3675 | static int partition_format_verity_hash( |
3676 | Context *context, | |
3677 | Partition *p, | |
13bde177 | 3678 | const char *node, |
2b392d86 DDM |
3679 | const char *data_node) { |
3680 | ||
3681 | #if HAVE_LIBCRYPTSETUP | |
3682 | Partition *dp; | |
a64769d6 | 3683 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
2b392d86 | 3684 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
cf18d96f | 3685 | _cleanup_free_ char *hint = NULL; |
2b392d86 DDM |
3686 | _cleanup_free_ uint8_t *rh = NULL; |
3687 | size_t rhs; | |
a64769d6 | 3688 | int r; |
2b392d86 DDM |
3689 | |
3690 | assert(context); | |
3691 | assert(p); | |
deeae10e | 3692 | assert(p->verity == VERITY_HASH); |
2b392d86 DDM |
3693 | assert(data_node); |
3694 | ||
3695 | if (p->dropped) | |
3696 | return 0; | |
3697 | ||
3698 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3699 | return 0; | |
3700 | ||
5eef7047 DDM |
3701 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
3702 | if (p->copy_blocks_fd >= 0) | |
3703 | return 0; | |
3704 | ||
2b392d86 DDM |
3705 | assert_se(dp = p->siblings[VERITY_DATA]); |
3706 | assert(!dp->dropped); | |
3707 | ||
cf18d96f DDM |
3708 | (void) partition_hint(p, node, &hint); |
3709 | ||
2b392d86 DDM |
3710 | r = dlopen_cryptsetup(); |
3711 | if (r < 0) | |
3712 | return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m"); | |
3713 | ||
13bde177 DDM |
3714 | if (!node) { |
3715 | r = partition_target_prepare(context, p, p->new_size, /*need_path=*/ true, &t); | |
3716 | if (r < 0) | |
3717 | return r; | |
2b392d86 | 3718 | |
13bde177 DDM |
3719 | node = partition_target_path(t); |
3720 | } | |
3721 | ||
3722 | r = sym_crypt_init(&cd, node); | |
2b392d86 | 3723 | if (r < 0) |
cf18d96f | 3724 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); |
2b392d86 | 3725 | |
e21be797 DDM |
3726 | cryptsetup_enable_logging(cd); |
3727 | ||
2b392d86 DDM |
3728 | r = sym_crypt_format( |
3729 | cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, | |
3730 | &(struct crypt_params_verity){ | |
3731 | .data_device = data_node, | |
3732 | .flags = CRYPT_VERITY_CREATE_HASH, | |
3733 | .hash_name = "sha256", | |
3734 | .hash_type = 1, | |
3735 | .data_block_size = context->sector_size, | |
3736 | .hash_block_size = context->sector_size, | |
3737 | .salt_size = 32, | |
3738 | }); | |
e21be797 DDM |
3739 | if (r < 0) { |
3740 | /* libcryptsetup reports non-descriptive EIO errors for every I/O failure. Luckily, it | |
3741 | * doesn't clobber errno so let's check for ENOSPC so we can report a better error if the | |
3742 | * partition is too small. */ | |
3743 | if (r == -EIO && errno == ENOSPC) | |
3744 | return log_error_errno(errno, | |
cf18d96f DDM |
3745 | "Verity hash data does not fit in partition %s with size %s", |
3746 | strna(hint), FORMAT_BYTES(p->new_size)); | |
e21be797 | 3747 | |
cf18d96f | 3748 | return log_error_errno(r, "Failed to setup verity hash data of partition %s: %m", strna(hint)); |
e21be797 | 3749 | } |
2b392d86 | 3750 | |
13bde177 DDM |
3751 | if (t) { |
3752 | r = partition_target_sync(context, p, t); | |
3753 | if (r < 0) | |
3754 | return r; | |
3755 | } | |
a64769d6 | 3756 | |
2b392d86 DDM |
3757 | r = sym_crypt_get_volume_key_size(cd); |
3758 | if (r < 0) | |
cf18d96f | 3759 | return log_error_errno(r, "Failed to determine verity root hash size of partition %s: %m", strna(hint)); |
2b392d86 DDM |
3760 | rhs = (size_t) r; |
3761 | ||
3762 | rh = malloc(rhs); | |
3763 | if (!rh) | |
3764 | return log_oom(); | |
3765 | ||
3766 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh, &rhs, NULL, 0); | |
3767 | if (r < 0) | |
cf18d96f | 3768 | return log_error_errno(r, "Failed to get verity root hash of partition %s: %m", strna(hint)); |
2b392d86 DDM |
3769 | |
3770 | assert(rhs >= sizeof(sd_id128_t) * 2); | |
3771 | ||
3772 | if (!dp->new_uuid_is_set) { | |
3773 | memcpy_safe(dp->new_uuid.bytes, rh, sizeof(sd_id128_t)); | |
3774 | dp->new_uuid_is_set = true; | |
3775 | } | |
3776 | ||
3777 | if (!p->new_uuid_is_set) { | |
3778 | memcpy_safe(p->new_uuid.bytes, rh + rhs - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
3779 | p->new_uuid_is_set = true; | |
3780 | } | |
3781 | ||
3782 | p->roothash = TAKE_PTR(rh); | |
3783 | p->roothash_size = rhs; | |
3784 | ||
3785 | return 0; | |
3786 | #else | |
3787 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes: %m"); | |
3788 | #endif | |
3789 | } | |
3790 | ||
4ecd39c5 DDM |
3791 | static int sign_verity_roothash( |
3792 | const uint8_t *roothash, | |
3793 | size_t roothash_size, | |
3794 | uint8_t **ret_signature, | |
3795 | size_t *ret_signature_size) { | |
3796 | ||
3797 | #if HAVE_OPENSSL | |
3798 | _cleanup_(BIO_freep) BIO *rb = NULL; | |
3799 | _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL; | |
3800 | _cleanup_free_ char *hex = NULL; | |
3801 | _cleanup_free_ uint8_t *sig = NULL; | |
3802 | int sigsz; | |
3803 | ||
3804 | assert(roothash); | |
3805 | assert(roothash_size > 0); | |
3806 | assert(ret_signature); | |
3807 | assert(ret_signature_size); | |
3808 | ||
3809 | hex = hexmem(roothash, roothash_size); | |
3810 | if (!hex) | |
3811 | return log_oom(); | |
3812 | ||
3813 | rb = BIO_new_mem_buf(hex, -1); | |
3814 | if (!rb) | |
3815 | return log_oom(); | |
3816 | ||
3817 | p7 = PKCS7_sign(arg_certificate, arg_private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY); | |
3818 | if (!p7) | |
3819 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s", | |
3820 | ERR_error_string(ERR_get_error(), NULL)); | |
3821 | ||
3822 | sigsz = i2d_PKCS7(p7, &sig); | |
3823 | if (sigsz < 0) | |
3824 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s", | |
3825 | ERR_error_string(ERR_get_error(), NULL)); | |
3826 | ||
3827 | *ret_signature = TAKE_PTR(sig); | |
3828 | *ret_signature_size = sigsz; | |
3829 | ||
3830 | return 0; | |
3831 | #else | |
3832 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot setup verity signature: %m"); | |
3833 | #endif | |
3834 | } | |
3835 | ||
3836 | static int partition_format_verity_sig(Context *context, Partition *p) { | |
3837 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
3838 | _cleanup_free_ uint8_t *sig = NULL; | |
cf18d96f | 3839 | _cleanup_free_ char *text = NULL, *hint = NULL; |
4ecd39c5 DDM |
3840 | Partition *hp; |
3841 | uint8_t fp[X509_FINGERPRINT_SIZE]; | |
d28c6ce6 | 3842 | size_t sigsz = 0; /* avoid false maybe-uninitialized warning */ |
4ecd39c5 DDM |
3843 | int whole_fd, r; |
3844 | ||
3845 | assert(p->verity == VERITY_SIG); | |
3846 | ||
3847 | if (p->dropped) | |
3848 | return 0; | |
3849 | ||
3850 | if (PARTITION_EXISTS(p)) | |
3851 | return 0; | |
3852 | ||
cf18d96f DDM |
3853 | (void) partition_hint(p, context->node, &hint); |
3854 | ||
4ecd39c5 DDM |
3855 | assert_se(hp = p->siblings[VERITY_HASH]); |
3856 | assert(!hp->dropped); | |
3857 | ||
3858 | assert(arg_certificate); | |
3859 | ||
3860 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3861 | ||
3862 | r = sign_verity_roothash(hp->roothash, hp->roothash_size, &sig, &sigsz); | |
3863 | if (r < 0) | |
3864 | return r; | |
3865 | ||
3866 | r = x509_fingerprint(arg_certificate, fp); | |
3867 | if (r < 0) | |
3868 | return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m"); | |
3869 | ||
3870 | r = json_build(&v, | |
3871 | JSON_BUILD_OBJECT( | |
3872 | JSON_BUILD_PAIR("rootHash", JSON_BUILD_HEX(hp->roothash, hp->roothash_size)), | |
3873 | JSON_BUILD_PAIR( | |
3874 | "certificateFingerprint", | |
3875 | JSON_BUILD_HEX(fp, sizeof(fp)) | |
3876 | ), | |
3877 | JSON_BUILD_PAIR("signature", JSON_BUILD_BASE64(sig, sigsz)) | |
3878 | ) | |
3879 | ); | |
3880 | if (r < 0) | |
cf18d96f | 3881 | return log_error_errno(r, "Failed to build verity signature JSON object: %m"); |
4ecd39c5 DDM |
3882 | |
3883 | r = json_variant_format(v, 0, &text); | |
3884 | if (r < 0) | |
cf18d96f | 3885 | return log_error_errno(r, "Failed to format verity signature JSON object: %m"); |
4ecd39c5 | 3886 | |
d28c6ce6 | 3887 | r = strgrowpad0(&text, p->new_size); |
4ecd39c5 | 3888 | if (r < 0) |
d28c6ce6 | 3889 | return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(p->new_size)); |
4ecd39c5 DDM |
3890 | |
3891 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
cf18d96f | 3892 | return log_error_errno(errno, "Failed to seek to partition %s offset: %m", strna(hint)); |
4ecd39c5 | 3893 | |
d28c6ce6 | 3894 | r = loop_write(whole_fd, text, p->new_size, /*do_poll=*/ false); |
4ecd39c5 | 3895 | if (r < 0) |
cf18d96f | 3896 | return log_error_errno(r, "Failed to write verity signature to partition %s: %m", strna(hint)); |
4ecd39c5 DDM |
3897 | |
3898 | if (fsync(whole_fd) < 0) | |
cf18d96f | 3899 | return log_error_errno(errno, "Failed to synchronize partition %s: %m", strna(hint)); |
4ecd39c5 DDM |
3900 | |
3901 | return 0; | |
3902 | } | |
3903 | ||
757bc2e4 | 3904 | static int context_copy_blocks(Context *context) { |
a64769d6 | 3905 | int r; |
757bc2e4 LP |
3906 | |
3907 | assert(context); | |
3908 | ||
3909 | /* Copy in file systems on the block level */ | |
3910 | ||
3911 | LIST_FOREACH(partitions, p, context->partitions) { | |
a64769d6 | 3912 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
757bc2e4 LP |
3913 | |
3914 | if (p->copy_blocks_fd < 0) | |
3915 | continue; | |
3916 | ||
3917 | if (p->dropped) | |
3918 | continue; | |
3919 | ||
3920 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
3921 | continue; | |
3922 | ||
8275334b | 3923 | if (partition_defer(p)) |
81d1098b DDM |
3924 | continue; |
3925 | ||
757bc2e4 LP |
3926 | assert(p->new_size != UINT64_MAX); |
3927 | assert(p->copy_blocks_size != UINT64_MAX); | |
48a09a8f | 3928 | assert(p->new_size >= p->copy_blocks_size + (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
757bc2e4 | 3929 | |
a64769d6 DDM |
3930 | r = partition_target_prepare(context, p, p->new_size, |
3931 | /*need_path=*/ p->encrypt != ENCRYPT_OFF || p->siblings[VERITY_HASH], | |
3932 | &t); | |
3933 | if (r < 0) | |
3934 | return r; | |
757bc2e4 | 3935 | |
a09ae915 DDM |
3936 | if (p->encrypt != ENCRYPT_OFF && t->loop) { |
3937 | r = partition_encrypt(context, p, t, /* offline = */ false); | |
3938 | if (r < 0) | |
3939 | return r; | |
3940 | } | |
3941 | ||
2b59bf51 ZJS |
3942 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", |
3943 | p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno); | |
757bc2e4 | 3944 | |
a64769d6 | 3945 | r = copy_bytes(p->copy_blocks_fd, partition_target_fd(t), p->copy_blocks_size, COPY_REFLINK); |
757bc2e4 LP |
3946 | if (r < 0) |
3947 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
3948 | ||
a09ae915 DDM |
3949 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
3950 | ||
3951 | if (p->encrypt != ENCRYPT_OFF && !t->loop) { | |
3952 | r = partition_encrypt(context, p, t, /* offline = */ true); | |
b9df3536 LP |
3953 | if (r < 0) |
3954 | return r; | |
b9df3536 LP |
3955 | } |
3956 | ||
a64769d6 DDM |
3957 | r = partition_target_sync(context, p, t); |
3958 | if (r < 0) | |
3959 | return r; | |
48a09a8f | 3960 | |
e463e257 | 3961 | if (p->siblings[VERITY_HASH] && !partition_defer(p->siblings[VERITY_HASH])) { |
a64769d6 | 3962 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
13bde177 | 3963 | /* node = */ NULL, partition_target_path(t)); |
2b392d86 DDM |
3964 | if (r < 0) |
3965 | return r; | |
3966 | } | |
4ecd39c5 | 3967 | |
e463e257 | 3968 | if (p->siblings[VERITY_SIG] && !partition_defer(p->siblings[VERITY_SIG])) { |
4ecd39c5 DDM |
3969 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); |
3970 | if (r < 0) | |
3971 | return r; | |
3972 | } | |
757bc2e4 LP |
3973 | } |
3974 | ||
3975 | return 0; | |
3976 | } | |
3977 | ||
e57b7020 DDM |
3978 | static int add_exclude_path(const char *path, Hashmap **denylist, DenyType type) { |
3979 | _cleanup_free_ struct stat *st = NULL; | |
3980 | int r; | |
3981 | ||
3982 | assert(path); | |
3983 | assert(denylist); | |
3984 | ||
3985 | st = new(struct stat, 1); | |
3986 | if (!st) | |
3987 | return log_oom(); | |
3988 | ||
3989 | r = chase_and_stat(path, arg_root, CHASE_PREFIX_ROOT, NULL, st); | |
3990 | if (r == -ENOENT) | |
3991 | return 0; | |
3992 | if (r < 0) | |
3993 | return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_root), path); | |
3994 | ||
3995 | r = hashmap_ensure_put(denylist, &inode_hash_ops, st, INT_TO_PTR(type)); | |
3996 | if (r == -EEXIST) | |
3997 | return 0; | |
3998 | if (r < 0) | |
3999 | return log_oom(); | |
4000 | if (r > 0) | |
4001 | TAKE_PTR(st); | |
4002 | ||
4003 | return 0; | |
4004 | } | |
4005 | ||
4006 | static int make_copy_files_denylist( | |
4007 | Context *context, | |
4008 | const Partition *p, | |
4009 | const char *source, | |
4010 | const char *target, | |
4011 | Hashmap **ret) { | |
4012 | ||
4013 | _cleanup_hashmap_free_ Hashmap *denylist = NULL; | |
4014 | int r; | |
4015 | ||
4016 | assert(context); | |
4017 | assert(p); | |
4018 | assert(source); | |
4019 | assert(target); | |
4020 | assert(ret); | |
4021 | ||
4022 | /* Always exclude the top level APIVFS and temporary directories since the contents of these | |
4023 | * directories are almost certainly not intended to end up in an image. */ | |
4024 | ||
4025 | NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) { | |
4026 | r = add_exclude_path(s, &denylist, DENY_CONTENTS); | |
4027 | if (r < 0) | |
4028 | return r; | |
4029 | } | |
4030 | ||
4031 | /* Add the user configured excludes. */ | |
4032 | ||
600bf76c | 4033 | STRV_FOREACH(e, p->exclude_files_source) { |
e57b7020 DDM |
4034 | r = add_exclude_path(*e, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE); |
4035 | if (r < 0) | |
4036 | return r; | |
4037 | } | |
4038 | ||
600bf76c DDM |
4039 | STRV_FOREACH(e, p->exclude_files_target) { |
4040 | _cleanup_free_ char *path = NULL; | |
4041 | ||
4042 | const char *s = path_startswith(*e, target); | |
4043 | if (!s) | |
4044 | continue; | |
4045 | ||
4046 | path = path_join(source, s); | |
4047 | if (!path) | |
4048 | return log_oom(); | |
4049 | ||
4050 | r = add_exclude_path(path, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE); | |
4051 | if (r < 0) | |
4052 | return r; | |
4053 | } | |
4054 | ||
e57b7020 DDM |
4055 | /* If we're populating a root partition, we don't want any files to end up under the APIVFS mount |
4056 | * points. While we already exclude <source>/proc, users could still do something such as | |
4057 | * "CopyFiles=/abc:/". Now, if /abc has a proc subdirectory with files in it, those will end up in | |
4058 | * the top level proc directory in the root partition, which we want to avoid. To deal with these | |
4059 | * cases, whenever we're populating a root partition and the target of CopyFiles= is the root | |
4060 | * directory of the root partition, we exclude all directories under the source that are named after | |
4061 | * APIVFS directories or named after mount points of other partitions that are also going to be part | |
4062 | * of the image. */ | |
4063 | ||
4064 | if (p->type.designator == PARTITION_ROOT && empty_or_root(target)) { | |
4065 | LIST_FOREACH(partitions, q, context->partitions) { | |
4066 | if (q->type.designator == PARTITION_ROOT) | |
4067 | continue; | |
4068 | ||
4069 | const char *sources = gpt_partition_type_mountpoint_nulstr(q->type); | |
4070 | if (!sources) | |
4071 | continue; | |
4072 | ||
4073 | NULSTR_FOREACH(s, sources) { | |
4074 | _cleanup_free_ char *path = NULL; | |
4075 | ||
4076 | /* Exclude only the children of partition mount points so that the nested | |
4077 | * partition mount point itself still ends up in the upper partition. */ | |
4078 | ||
4079 | path = path_join(source, s); | |
4080 | if (!path) | |
4081 | return -ENOMEM; | |
4082 | ||
4083 | r = add_exclude_path(path, &denylist, DENY_CONTENTS); | |
4084 | if (r < 0) | |
4085 | return r; | |
4086 | } | |
4087 | } | |
4088 | ||
4089 | NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) { | |
4090 | _cleanup_free_ char *path = NULL; | |
4091 | ||
4092 | path = path_join(source, s); | |
4093 | if (!path) | |
4094 | return -ENOMEM; | |
4095 | ||
4096 | r = add_exclude_path(path, &denylist, DENY_CONTENTS); | |
4097 | if (r < 0) | |
4098 | return r; | |
4099 | } | |
4100 | } | |
4101 | ||
4102 | *ret = TAKE_PTR(denylist); | |
4103 | return 0; | |
4104 | } | |
4105 | ||
4106 | static int do_copy_files(Context *context, Partition *p, const char *root) { | |
8a794850 LP |
4107 | int r; |
4108 | ||
4109 | assert(p); | |
92cd7e7c | 4110 | assert(root); |
8a794850 | 4111 | |
3e451460 DDM |
4112 | /* copy_tree_at() automatically copies the permissions of source directories to target directories if |
4113 | * it created them. However, the root directory is created by us, so we have to manually take care | |
4114 | * that it is initialized. We use the first source directory targeting "/" as the metadata source for | |
4115 | * the root directory. */ | |
4116 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
4117 | _cleanup_close_ int rfd = -EBADF, sfd = -EBADF; | |
4118 | ||
4119 | if (!path_equal(*target, "/")) | |
4120 | continue; | |
4121 | ||
4122 | rfd = open(root, O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
4123 | if (rfd < 0) | |
4124 | return rfd; | |
4125 | ||
f461a28d | 4126 | sfd = chase_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_PATH|O_DIRECTORY|O_CLOEXEC|O_NOCTTY, NULL); |
3e451460 DDM |
4127 | if (sfd < 0) |
4128 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
4129 | ||
4130 | (void) copy_xattr(sfd, NULL, rfd, NULL, COPY_ALL_XATTRS); | |
4131 | (void) copy_access(sfd, rfd); | |
4132 | (void) copy_times(sfd, rfd, 0); | |
4133 | ||
4134 | break; | |
4135 | } | |
4136 | ||
8a794850 | 4137 | STRV_FOREACH_PAIR(source, target, p->copy_files) { |
e57b7020 | 4138 | _cleanup_hashmap_free_ Hashmap *denylist = NULL; |
254d1313 | 4139 | _cleanup_close_ int sfd = -EBADF, pfd = -EBADF, tfd = -EBADF; |
8a794850 | 4140 | |
e57b7020 DDM |
4141 | r = make_copy_files_denylist(context, p, *source, *target, &denylist); |
4142 | if (r < 0) | |
4143 | return r; | |
4144 | ||
f461a28d | 4145 | sfd = chase_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL); |
8a794850 LP |
4146 | if (sfd < 0) |
4147 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
4148 | ||
4149 | r = fd_verify_regular(sfd); | |
4150 | if (r < 0) { | |
4151 | if (r != -EISDIR) | |
4152 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
4153 | ||
4154 | /* We are looking at a directory */ | |
f461a28d | 4155 | tfd = chase_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 4156 | if (tfd < 0) { |
f21a3a82 LP |
4157 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
4158 | ||
8a794850 LP |
4159 | if (tfd != -ENOENT) |
4160 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
4161 | ||
f21a3a82 LP |
4162 | r = path_extract_filename(*target, &fn); |
4163 | if (r < 0) | |
4164 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
4165 | ||
4166 | r = path_extract_directory(*target, &dn); | |
4167 | if (r < 0) | |
4168 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
4169 | ||
92cd7e7c | 4170 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
4171 | if (r < 0) |
4172 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
4173 | ||
f461a28d | 4174 | pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 LP |
4175 | if (pfd < 0) |
4176 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
4177 | ||
652d9040 LP |
4178 | r = copy_tree_at( |
4179 | sfd, ".", | |
6020d00d | 4180 | pfd, fn, |
ff1b55ff | 4181 | UID_INVALID, GID_INVALID, |
ab645e0a | 4182 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE, |
c0fad2d9 | 4183 | denylist); |
8a794850 | 4184 | } else |
652d9040 LP |
4185 | r = copy_tree_at( |
4186 | sfd, ".", | |
4187 | tfd, ".", | |
ff1b55ff | 4188 | UID_INVALID, GID_INVALID, |
ab645e0a | 4189 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE, |
c0fad2d9 | 4190 | denylist); |
8a794850 | 4191 | if (r < 0) |
cf2ed23c DDM |
4192 | return log_error_errno(r, "Failed to copy '%s%s' to '%s%s': %m", |
4193 | strempty(arg_root), *source, strempty(root), *target); | |
8a794850 | 4194 | } else { |
f21a3a82 LP |
4195 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
4196 | ||
8a794850 LP |
4197 | /* We are looking at a regular file */ |
4198 | ||
f21a3a82 LP |
4199 | r = path_extract_filename(*target, &fn); |
4200 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
4201 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
4202 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
4203 | if (r < 0) | |
4204 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
4205 | ||
4206 | r = path_extract_directory(*target, &dn); | |
4207 | if (r < 0) | |
4208 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
4209 | ||
92cd7e7c | 4210 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
4211 | if (r < 0) |
4212 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
4213 | ||
f461a28d | 4214 | pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 4215 | if (pfd < 0) |
a0ff9971 | 4216 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 4217 | |
e2819067 | 4218 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
4219 | if (tfd < 0) |
4220 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
4221 | ||
ab645e0a | 4222 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_SIGINT|COPY_TRUNCATE); |
8a794850 | 4223 | if (r < 0) |
554a2b64 | 4224 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 4225 | |
c17cfe6e | 4226 | (void) copy_xattr(sfd, NULL, tfd, NULL, COPY_ALL_XATTRS); |
8a794850 LP |
4227 | (void) copy_access(sfd, tfd); |
4228 | (void) copy_times(sfd, tfd, 0); | |
4229 | } | |
4230 | } | |
4231 | ||
4232 | return 0; | |
4233 | } | |
4234 | ||
49fb6e97 | 4235 | static int do_make_directories(Partition *p, const char *root) { |
d83d8048 LP |
4236 | int r; |
4237 | ||
4238 | assert(p); | |
92cd7e7c | 4239 | assert(root); |
d83d8048 LP |
4240 | |
4241 | STRV_FOREACH(d, p->make_directories) { | |
4242 | ||
ff1b55ff | 4243 | r = mkdir_p_root(root, *d, UID_INVALID, GID_INVALID, 0755); |
d83d8048 LP |
4244 | if (r < 0) |
4245 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
4246 | } | |
4247 | ||
4248 | return 0; | |
4249 | } | |
4250 | ||
d3201eb4 DDM |
4251 | static bool partition_needs_populate(Partition *p) { |
4252 | assert(p); | |
4253 | return !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories); | |
4254 | } | |
4255 | ||
e57b7020 | 4256 | static int partition_populate_directory(Context *context, Partition *p, char **ret) { |
95bfd3cd | 4257 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
1eb86ddd | 4258 | const char *vt; |
95bfd3cd DDM |
4259 | int r; |
4260 | ||
e59678b2 | 4261 | assert(ret); |
95bfd3cd | 4262 | |
b24bfd6e DDM |
4263 | log_info("Populating %s filesystem.", p->format); |
4264 | ||
1eb86ddd DDM |
4265 | r = var_tmp_dir(&vt); |
4266 | if (r < 0) | |
4267 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
95bfd3cd | 4268 | |
1eb86ddd DDM |
4269 | r = tempfn_random_child(vt, "repart", &root); |
4270 | if (r < 0) | |
4271 | return log_error_errno(r, "Failed to generate temporary directory: %m"); | |
4272 | ||
4273 | r = mkdir(root, 0755); | |
4274 | if (r < 0) | |
4275 | return log_error_errno(errno, "Failed to create temporary directory: %m"); | |
0b34f351 | 4276 | |
e57b7020 | 4277 | r = do_copy_files(context, p, root); |
95bfd3cd DDM |
4278 | if (r < 0) |
4279 | return r; | |
4280 | ||
49fb6e97 | 4281 | r = do_make_directories(p, root); |
95bfd3cd DDM |
4282 | if (r < 0) |
4283 | return r; | |
4284 | ||
b24bfd6e DDM |
4285 | log_info("Successfully populated %s filesystem.", p->format); |
4286 | ||
e59678b2 | 4287 | *ret = TAKE_PTR(root); |
95bfd3cd DDM |
4288 | return 0; |
4289 | } | |
4290 | ||
e57b7020 | 4291 | static int partition_populate_filesystem(Context *context, Partition *p, const char *node) { |
8a794850 LP |
4292 | int r; |
4293 | ||
4294 | assert(p); | |
4295 | assert(node); | |
4296 | ||
b24bfd6e | 4297 | log_info("Populating %s filesystem.", p->format); |
8a794850 LP |
4298 | |
4299 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
4300 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
4301 | * detached mount propagation. */ | |
4302 | ||
4303 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
4304 | if (r < 0) | |
4305 | return r; | |
4306 | if (r == 0) { | |
4307 | static const char fs[] = "/run/systemd/mount-root"; | |
4308 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
4309 | ||
4310 | r = mkdir_p(fs, 0700); | |
4311 | if (r < 0) { | |
4312 | log_error_errno(r, "Failed to create mount point: %m"); | |
4313 | _exit(EXIT_FAILURE); | |
4314 | } | |
4315 | ||
511a8cfe | 4316 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
4317 | _exit(EXIT_FAILURE); |
4318 | ||
e57b7020 | 4319 | if (do_copy_files(context, p, fs) < 0) |
8a794850 LP |
4320 | _exit(EXIT_FAILURE); |
4321 | ||
49fb6e97 | 4322 | if (do_make_directories(p, fs) < 0) |
d83d8048 LP |
4323 | _exit(EXIT_FAILURE); |
4324 | ||
8a794850 LP |
4325 | r = syncfs_path(AT_FDCWD, fs); |
4326 | if (r < 0) { | |
4327 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
4328 | _exit(EXIT_FAILURE); | |
4329 | } | |
4330 | ||
4331 | _exit(EXIT_SUCCESS); | |
4332 | } | |
4333 | ||
b24bfd6e | 4334 | log_info("Successfully populated %s filesystem.", p->format); |
8a794850 LP |
4335 | return 0; |
4336 | } | |
4337 | ||
53171c04 | 4338 | static int context_mkfs(Context *context) { |
a64769d6 | 4339 | int r; |
53171c04 LP |
4340 | |
4341 | assert(context); | |
4342 | ||
4343 | /* Make a file system */ | |
4344 | ||
4345 | LIST_FOREACH(partitions, p, context->partitions) { | |
e59678b2 | 4346 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
a64769d6 | 4347 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
4b8ce14f | 4348 | _cleanup_strv_free_ char **extra_mkfs_options = NULL; |
53171c04 LP |
4349 | |
4350 | if (p->dropped) | |
4351 | continue; | |
4352 | ||
4353 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
4354 | continue; | |
4355 | ||
4356 | if (!p->format) | |
4357 | continue; | |
4358 | ||
c4a87b76 DDM |
4359 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
4360 | if (p->copy_blocks_fd >= 0) | |
4361 | continue; | |
4362 | ||
8275334b | 4363 | if (partition_defer(p)) |
81d1098b DDM |
4364 | continue; |
4365 | ||
53171c04 LP |
4366 | assert(p->offset != UINT64_MAX); |
4367 | assert(p->new_size != UINT64_MAX); | |
48a09a8f | 4368 | assert(p->new_size >= (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
53171c04 | 4369 | |
a64769d6 DDM |
4370 | /* If we're doing encryption, we make sure we keep free space at the end which is required |
4371 | * for cryptsetup's offline encryption. */ | |
4372 | r = partition_target_prepare(context, p, | |
4373 | p->new_size - (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0), | |
4374 | /*need_path=*/ true, | |
4375 | &t); | |
53171c04 | 4376 | if (r < 0) |
a64769d6 | 4377 | return r; |
53171c04 | 4378 | |
a09ae915 DDM |
4379 | if (p->encrypt != ENCRYPT_OFF && t->loop) { |
4380 | r = partition_target_grow(t, p->new_size); | |
4381 | if (r < 0) | |
4382 | return r; | |
4383 | ||
4384 | r = partition_encrypt(context, p, t, /* offline = */ false); | |
4385 | if (r < 0) | |
4386 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
4387 | } | |
4388 | ||
53171c04 LP |
4389 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
4390 | ||
d3201eb4 DDM |
4391 | /* If we're not writing to a loop device or if we're populating a read-only filesystem, we |
4392 | * have to populate using the filesystem's mkfs's --root (or equivalent) option. To do that, | |
4393 | * we need to set up the final directory tree beforehand. */ | |
4394 | ||
4395 | if (partition_needs_populate(p) && (!t->loop || fstype_is_ro(p->format))) { | |
4396 | if (!mkfs_supports_root_option(p->format)) | |
4397 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
4398 | "Loop device access is required to populate %s filesystems.", | |
4399 | p->format); | |
95bfd3cd | 4400 | |
e57b7020 | 4401 | r = partition_populate_directory(context, p, &root); |
143c3c08 DDM |
4402 | if (r < 0) |
4403 | return r; | |
4404 | } | |
95bfd3cd | 4405 | |
4b8ce14f DDM |
4406 | r = mkfs_options_from_env("REPART", p->format, &extra_mkfs_options); |
4407 | if (r < 0) | |
4408 | return log_error_errno(r, | |
4409 | "Failed to determine mkfs command line options for '%s': %m", | |
4410 | p->format); | |
4411 | ||
a64769d6 | 4412 | r = make_filesystem(partition_target_path(t), p->format, strempty(p->new_label), root, |
2bc161dd DDM |
4413 | p->fs_uuid, arg_discard, /* quiet = */ false, context->sector_size, |
4414 | extra_mkfs_options); | |
48a09a8f | 4415 | if (r < 0) |
53171c04 LP |
4416 | return r; |
4417 | ||
4418 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
4419 | ||
d3201eb4 DDM |
4420 | /* If we're writing to a loop device, we can now mount the empty filesystem and populate it. */ |
4421 | if (partition_needs_populate(p) && !root) { | |
4422 | assert(t->loop); | |
4423 | ||
a09ae915 | 4424 | r = partition_populate_filesystem(context, p, partition_target_path(t)); |
48a09a8f | 4425 | if (r < 0) |
143c3c08 | 4426 | return r; |
b9df3536 LP |
4427 | } |
4428 | ||
a09ae915 | 4429 | if (p->encrypt != ENCRYPT_OFF && !t->loop) { |
a64769d6 | 4430 | r = partition_target_grow(t, p->new_size); |
b9df3536 | 4431 | if (r < 0) |
a64769d6 | 4432 | return r; |
b9df3536 | 4433 | |
a09ae915 | 4434 | r = partition_encrypt(context, p, t, /* offline = */ true); |
48a09a8f DDM |
4435 | if (r < 0) |
4436 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
b9df3536 | 4437 | } |
8a794850 | 4438 | |
48a09a8f DDM |
4439 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and |
4440 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
4441 | * the disk. */ | |
4442 | ||
a64769d6 | 4443 | r = partition_target_sync(context, p, t); |
53171c04 | 4444 | if (r < 0) |
a64769d6 | 4445 | return r; |
b5b7879a | 4446 | |
e463e257 | 4447 | if (p->siblings[VERITY_HASH] && !partition_defer(p->siblings[VERITY_HASH])) { |
a64769d6 | 4448 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
13bde177 | 4449 | /* node = */ NULL, partition_target_path(t)); |
2b392d86 DDM |
4450 | if (r < 0) |
4451 | return r; | |
b5b7879a | 4452 | } |
4ecd39c5 | 4453 | |
e463e257 | 4454 | if (p->siblings[VERITY_SIG] && !partition_defer(p->siblings[VERITY_SIG])) { |
4ecd39c5 DDM |
4455 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); |
4456 | if (r < 0) | |
4457 | return r; | |
4458 | } | |
b5b7879a DDM |
4459 | } |
4460 | ||
4461 | return 0; | |
4462 | } | |
4463 | ||
b456191d DDM |
4464 | static int parse_x509_certificate(const char *certificate, size_t certificate_size, X509 **ret) { |
4465 | #if HAVE_OPENSSL | |
4466 | _cleanup_(X509_freep) X509 *cert = NULL; | |
4467 | _cleanup_(BIO_freep) BIO *cb = NULL; | |
4468 | ||
4469 | assert(certificate); | |
4470 | assert(certificate_size > 0); | |
4471 | assert(ret); | |
4472 | ||
4473 | cb = BIO_new_mem_buf(certificate, certificate_size); | |
4474 | if (!cb) | |
4475 | return log_oom(); | |
4476 | ||
4477 | cert = PEM_read_bio_X509(cb, NULL, NULL, NULL); | |
4478 | if (!cert) | |
4479 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Failed to parse X.509 certificate: %s", | |
4480 | ERR_error_string(ERR_get_error(), NULL)); | |
4481 | ||
4482 | if (ret) | |
4483 | *ret = TAKE_PTR(cert); | |
4484 | ||
4485 | return 0; | |
4486 | #else | |
4487 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse X509 certificate."); | |
4488 | #endif | |
4489 | } | |
4490 | ||
4491 | static int parse_private_key(const char *key, size_t key_size, EVP_PKEY **ret) { | |
4492 | #if HAVE_OPENSSL | |
4493 | _cleanup_(BIO_freep) BIO *kb = NULL; | |
4494 | _cleanup_(EVP_PKEY_freep) EVP_PKEY *pk = NULL; | |
4495 | ||
4496 | assert(key); | |
4497 | assert(key_size > 0); | |
4498 | assert(ret); | |
4499 | ||
4500 | kb = BIO_new_mem_buf(key, key_size); | |
4501 | if (!kb) | |
4502 | return log_oom(); | |
4503 | ||
4504 | pk = PEM_read_bio_PrivateKey(kb, NULL, NULL, NULL); | |
4505 | if (!pk) | |
4506 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to parse PEM private key: %s", | |
4507 | ERR_error_string(ERR_get_error(), NULL)); | |
4508 | ||
4509 | if (ret) | |
4510 | *ret = TAKE_PTR(pk); | |
4511 | ||
4512 | return 0; | |
4513 | #else | |
4514 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse private key."); | |
4515 | #endif | |
4516 | } | |
4517 | ||
e594a3b1 LP |
4518 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
4519 | struct { | |
4520 | sd_id128_t type_uuid; | |
4521 | uint64_t counter; | |
695cfd53 | 4522 | } _packed_ plaintext = {}; |
e594a3b1 | 4523 | union { |
ade99252 | 4524 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
4525 | sd_id128_t id; |
4526 | } result; | |
4527 | ||
4528 | uint64_t k = 0; | |
e594a3b1 LP |
4529 | int r; |
4530 | ||
4531 | assert(context); | |
4532 | assert(p); | |
4533 | assert(ret); | |
4534 | ||
4535 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
4536 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
4537 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
4538 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
4539 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
4540 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
4541 | * second and later partition of the same type) if we have more than one partition of the same | |
4542 | * time. Or in other words: | |
4543 | * | |
4544 | * With: | |
4545 | * SEED := /etc/machine-id | |
4546 | * | |
4547 | * If first partition instance of type TYPE_UUID: | |
4548 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
4549 | * | |
4550 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
4551 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
4552 | */ | |
4553 | ||
4554 | LIST_FOREACH(partitions, q, context->partitions) { | |
4555 | if (p == q) | |
4556 | break; | |
4557 | ||
22e932f4 | 4558 | if (!sd_id128_equal(p->type.uuid, q->type.uuid)) |
e594a3b1 LP |
4559 | continue; |
4560 | ||
4561 | k++; | |
4562 | } | |
4563 | ||
22e932f4 | 4564 | plaintext.type_uuid = p->type.uuid; |
e594a3b1 LP |
4565 | plaintext.counter = htole64(k); |
4566 | ||
ade99252 KK |
4567 | hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes), |
4568 | &plaintext, | |
4569 | k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
4570 | result.md); | |
e594a3b1 LP |
4571 | |
4572 | /* Take the first half, mark it as v4 UUID */ | |
4573 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
4574 | result.id = id128_make_v4_uuid(result.id); | |
4575 | ||
4576 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
4577 | LIST_FOREACH(partitions, q, context->partitions) { | |
4578 | if (p == q) | |
4579 | continue; | |
4580 | ||
580f48cc | 4581 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 4582 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
4583 | |
4584 | r = sd_id128_randomize(&result.id); | |
4585 | if (r < 0) | |
4586 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
4587 | ||
4588 | break; | |
4589 | } | |
4590 | } | |
4591 | ||
4592 | *ret = result.id; | |
4593 | return 0; | |
4594 | } | |
4595 | ||
4596 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
4597 | _cleanup_free_ char *label = NULL; | |
4598 | const char *prefix; | |
4599 | unsigned k = 1; | |
4600 | ||
4601 | assert(context); | |
4602 | assert(p); | |
4603 | assert(ret); | |
4604 | ||
22e932f4 | 4605 | prefix = gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
4606 | if (!prefix) |
4607 | prefix = "linux"; | |
4608 | ||
4609 | for (;;) { | |
4610 | const char *ll = label ?: prefix; | |
4611 | bool retry = false; | |
e594a3b1 LP |
4612 | |
4613 | LIST_FOREACH(partitions, q, context->partitions) { | |
4614 | if (p == q) | |
4615 | break; | |
4616 | ||
4617 | if (streq_ptr(ll, q->current_label) || | |
4618 | streq_ptr(ll, q->new_label)) { | |
4619 | retry = true; | |
4620 | break; | |
4621 | } | |
4622 | } | |
4623 | ||
4624 | if (!retry) | |
4625 | break; | |
4626 | ||
4627 | label = mfree(label); | |
e594a3b1 LP |
4628 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
4629 | return log_oom(); | |
4630 | } | |
4631 | ||
4632 | if (!label) { | |
4633 | label = strdup(prefix); | |
4634 | if (!label) | |
4635 | return log_oom(); | |
4636 | } | |
4637 | ||
4638 | *ret = TAKE_PTR(label); | |
4639 | return 0; | |
4640 | } | |
4641 | ||
4642 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
e594a3b1 LP |
4643 | int r; |
4644 | ||
4645 | assert(context); | |
4646 | ||
4647 | LIST_FOREACH(partitions, p, context->partitions) { | |
15cad3a2 DDM |
4648 | sd_id128_t uuid; |
4649 | ||
e594a3b1 LP |
4650 | /* Never touch foreign partitions */ |
4651 | if (PARTITION_IS_FOREIGN(p)) { | |
4652 | p->new_uuid = p->current_uuid; | |
4653 | ||
4654 | if (p->current_label) { | |
78eee6ce LP |
4655 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
4656 | if (r < 0) | |
4657 | return r; | |
e594a3b1 LP |
4658 | } |
4659 | ||
4660 | continue; | |
4661 | } | |
4662 | ||
4663 | if (!sd_id128_is_null(p->current_uuid)) | |
15cad3a2 DDM |
4664 | p->new_uuid = uuid = p->current_uuid; /* Never change initialized UUIDs */ |
4665 | else if (p->new_uuid_is_set) | |
4666 | uuid = p->new_uuid; | |
4667 | else { | |
12963533 | 4668 | /* Not explicitly set by user! */ |
15cad3a2 | 4669 | r = partition_acquire_uuid(context, p, &uuid); |
e594a3b1 LP |
4670 | if (r < 0) |
4671 | return r; | |
11749b61 | 4672 | |
15cad3a2 DDM |
4673 | /* The final verity hash/data UUIDs can only be determined after formatting the |
4674 | * verity hash partition. However, we still want to use the generated partition UUID | |
4675 | * to derive other UUIDs to keep things unique and reproducible, so we always | |
4676 | * generate a UUID if none is set, but we only use it as the actual partition UUID if | |
4677 | * verity is not configured. */ | |
4678 | if (!IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) { | |
4679 | p->new_uuid = uuid; | |
4680 | p->new_uuid_is_set = true; | |
4681 | } | |
e594a3b1 LP |
4682 | } |
4683 | ||
8bbbdfd7 DDM |
4684 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", |
4685 | * keyed off the partition UUID. */ | |
15cad3a2 | 4686 | r = derive_uuid(uuid, "file-system-uuid", &p->fs_uuid); |
8bbbdfd7 DDM |
4687 | if (r < 0) |
4688 | return r; | |
4689 | ||
15cad3a2 DDM |
4690 | if (p->encrypt != ENCRYPT_OFF) { |
4691 | r = derive_uuid(uuid, "luks-uuid", &p->luks_uuid); | |
4692 | if (r < 0) | |
4693 | return r; | |
4694 | } | |
4695 | ||
e594a3b1 | 4696 | if (!isempty(p->current_label)) { |
78eee6ce LP |
4697 | /* never change initialized labels */ |
4698 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
4699 | if (r < 0) | |
4700 | return r; | |
12963533 TH |
4701 | } else if (!p->new_label) { |
4702 | /* Not explicitly set by user! */ | |
4703 | ||
e594a3b1 LP |
4704 | r = partition_acquire_label(context, p, &p->new_label); |
4705 | if (r < 0) | |
4706 | return r; | |
4707 | } | |
4708 | } | |
4709 | ||
4710 | return 0; | |
4711 | } | |
4712 | ||
e73309c5 LP |
4713 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
4714 | _cleanup_free_ char *a = NULL; | |
4715 | ||
4716 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
4717 | uint64_t bit = UINT64_C(1) << i; | |
4718 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
4719 | ||
4720 | if (!FLAGS_SET(flags, bit)) | |
4721 | continue; | |
4722 | ||
4723 | xsprintf(buf, "%u", i); | |
4724 | if (!strextend_with_separator(&a, ",", buf)) | |
4725 | return -ENOMEM; | |
4726 | } | |
4727 | ||
4728 | return fdisk_partition_set_attrs(q, a); | |
4729 | } | |
4730 | ||
1c41c1dc LP |
4731 | static uint64_t partition_merge_flags(Partition *p) { |
4732 | uint64_t f; | |
4733 | ||
4734 | assert(p); | |
4735 | ||
4736 | f = p->gpt_flags; | |
4737 | ||
ff0771bf | 4738 | if (p->no_auto >= 0) { |
22e932f4 | 4739 | if (gpt_partition_type_knows_no_auto(p->type)) |
92e72028 | 4740 | SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto); |
ff0771bf | 4741 | else { |
b7416360 | 4742 | char buffer[SD_ID128_UUID_STRING_MAX]; |
ff0771bf LP |
4743 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", |
4744 | yes_no(p->no_auto), | |
22e932f4 | 4745 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
ff0771bf LP |
4746 | } |
4747 | } | |
4748 | ||
1c41c1dc | 4749 | if (p->read_only >= 0) { |
22e932f4 | 4750 | if (gpt_partition_type_knows_read_only(p->type)) |
92e72028 | 4751 | SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only); |
1c41c1dc | 4752 | else { |
b7416360 | 4753 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4754 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", |
4755 | yes_no(p->read_only), | |
22e932f4 | 4756 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4757 | } |
4758 | } | |
4759 | ||
4760 | if (p->growfs >= 0) { | |
22e932f4 | 4761 | if (gpt_partition_type_knows_growfs(p->type)) |
92e72028 | 4762 | SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs); |
1c41c1dc | 4763 | else { |
b7416360 | 4764 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4765 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", |
4766 | yes_no(p->growfs), | |
22e932f4 | 4767 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4768 | } |
4769 | } | |
4770 | ||
4771 | return f; | |
4772 | } | |
4773 | ||
f28d4f42 | 4774 | static int context_mangle_partitions(Context *context) { |
f28d4f42 | 4775 | int r; |
e594a3b1 LP |
4776 | |
4777 | assert(context); | |
4778 | ||
e594a3b1 LP |
4779 | LIST_FOREACH(partitions, p, context->partitions) { |
4780 | if (p->dropped) | |
4781 | continue; | |
4782 | ||
8275334b | 4783 | if (partition_defer(p)) |
81d1098b DDM |
4784 | continue; |
4785 | ||
e594a3b1 LP |
4786 | assert(p->new_size != UINT64_MAX); |
4787 | assert(p->offset != UINT64_MAX); | |
4788 | assert(p->partno != UINT64_MAX); | |
4789 | ||
4790 | if (PARTITION_EXISTS(p)) { | |
4791 | bool changed = false; | |
4792 | ||
4793 | assert(p->current_partition); | |
4794 | ||
4795 | if (p->new_size != p->current_size) { | |
4796 | assert(p->new_size >= p->current_size); | |
994b3031 | 4797 | assert(p->new_size % context->sector_size == 0); |
e594a3b1 LP |
4798 | |
4799 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
4800 | if (r < 0) | |
4801 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4802 | ||
994b3031 | 4803 | r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size); |
e594a3b1 LP |
4804 | if (r < 0) |
4805 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4806 | ||
4807 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
4808 | changed = true; | |
4809 | } | |
4810 | ||
4811 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
b7416360 | 4812 | r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4813 | if (r < 0) |
4814 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4815 | ||
4816 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
4817 | changed = true; | |
4818 | } | |
4819 | ||
4820 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 4821 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
4822 | if (r < 0) |
4823 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4824 | ||
4825 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
4826 | changed = true; | |
4827 | } | |
4828 | ||
4829 | if (changed) { | |
4830 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
4831 | ||
4832 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
4833 | if (r < 0) | |
4834 | return log_error_errno(r, "Failed to update partition: %m"); | |
4835 | } | |
4836 | } else { | |
4837 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
4838 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
e594a3b1 LP |
4839 | |
4840 | assert(!p->new_partition); | |
994b3031 LP |
4841 | assert(p->offset % context->sector_size == 0); |
4842 | assert(p->new_size % context->sector_size == 0); | |
be9ce018 | 4843 | assert(p->new_label); |
e594a3b1 LP |
4844 | |
4845 | t = fdisk_new_parttype(); | |
4846 | if (!t) | |
4847 | return log_oom(); | |
4848 | ||
22e932f4 | 4849 | r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type.uuid)); |
e594a3b1 LP |
4850 | if (r < 0) |
4851 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
4852 | ||
4853 | q = fdisk_new_partition(); | |
4854 | if (!q) | |
4855 | return log_oom(); | |
4856 | ||
4857 | r = fdisk_partition_set_type(q, t); | |
4858 | if (r < 0) | |
4859 | return log_error_errno(r, "Failed to set partition type: %m"); | |
4860 | ||
4861 | r = fdisk_partition_size_explicit(q, true); | |
4862 | if (r < 0) | |
4863 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4864 | ||
994b3031 | 4865 | r = fdisk_partition_set_start(q, p->offset / context->sector_size); |
e594a3b1 LP |
4866 | if (r < 0) |
4867 | return log_error_errno(r, "Failed to position partition: %m"); | |
4868 | ||
994b3031 | 4869 | r = fdisk_partition_set_size(q, p->new_size / context->sector_size); |
e594a3b1 LP |
4870 | if (r < 0) |
4871 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4872 | ||
4873 | r = fdisk_partition_set_partno(q, p->partno); | |
4874 | if (r < 0) | |
4875 | return log_error_errno(r, "Failed to set partition number: %m"); | |
4876 | ||
b7416360 | 4877 | r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4878 | if (r < 0) |
4879 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4880 | ||
be9ce018 | 4881 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
4882 | if (r < 0) |
4883 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4884 | ||
ff0771bf | 4885 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 4886 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
4887 | if (r < 0) |
4888 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
4889 | ||
5b5109e2 | 4890 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
4891 | |
4892 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
4893 | if (r < 0) | |
4894 | return log_error_errno(r, "Failed to add partition: %m"); | |
4895 | ||
4896 | assert(!p->new_partition); | |
4897 | p->new_partition = TAKE_PTR(q); | |
4898 | } | |
4899 | } | |
4900 | ||
f28d4f42 LP |
4901 | return 0; |
4902 | } | |
4903 | ||
62108348 | 4904 | static int split_name_printf(Partition *p, char **ret) { |
4cee8333 DDM |
4905 | assert(p); |
4906 | ||
4907 | const Specifier table[] = { | |
22e932f4 DDM |
4908 | { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type.uuid) }, |
4909 | { 'T', specifier_id128, &p->type.uuid }, | |
4cee8333 DDM |
4910 | { 'U', specifier_id128, &p->new_uuid }, |
4911 | { 'n', specifier_uint64, &p->partno }, | |
4912 | ||
4913 | COMMON_SYSTEM_SPECIFIERS, | |
4914 | {} | |
4915 | }; | |
4916 | ||
62108348 | 4917 | return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, ret); |
4cee8333 DDM |
4918 | } |
4919 | ||
62108348 DDM |
4920 | static int split_node(const char *node, char **ret_base, char **ret_ext) { |
4921 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
4922 | char *e; | |
4923 | int r; | |
4924 | ||
4925 | assert(node); | |
4926 | assert(ret_base); | |
4927 | assert(ret_ext); | |
4928 | ||
4929 | r = path_extract_filename(node, &base); | |
4930 | if (r == O_DIRECTORY || r == -EADDRNOTAVAIL) | |
4931 | return log_error_errno(r, "Device node %s cannot be a directory", node); | |
4932 | if (r < 0) | |
4933 | return log_error_errno(r, "Failed to extract filename from %s: %m", node); | |
4934 | ||
4935 | e = endswith(base, ".raw"); | |
4936 | if (e) { | |
4937 | ext = strdup(e); | |
4938 | if (!ext) | |
4939 | return log_oom(); | |
4940 | ||
4941 | *e = 0; | |
4942 | } | |
4943 | ||
4944 | *ret_base = TAKE_PTR(base); | |
4945 | *ret_ext = TAKE_PTR(ext); | |
4946 | ||
4947 | return 0; | |
4cee8333 DDM |
4948 | } |
4949 | ||
4950 | static int split_name_resolve(Context *context) { | |
62108348 | 4951 | _cleanup_free_ char *parent = NULL, *base = NULL, *ext = NULL; |
4cee8333 DDM |
4952 | int r; |
4953 | ||
62108348 | 4954 | assert(context); |
62108348 | 4955 | |
cc751c75 | 4956 | r = path_extract_directory(context->node, &parent); |
62108348 | 4957 | if (r < 0 && r != -EDESTADDRREQ) |
cc751c75 | 4958 | return log_error_errno(r, "Failed to extract directory from %s: %m", context->node); |
62108348 | 4959 | |
cc751c75 | 4960 | r = split_node(context->node, &base, &ext); |
62108348 DDM |
4961 | if (r < 0) |
4962 | return r; | |
4963 | ||
4cee8333 | 4964 | LIST_FOREACH(partitions, p, context->partitions) { |
62108348 DDM |
4965 | _cleanup_free_ char *resolved = NULL; |
4966 | ||
4cee8333 DDM |
4967 | if (p->dropped) |
4968 | continue; | |
4969 | ||
4970 | if (!p->split_name_format) | |
4971 | continue; | |
4972 | ||
62108348 | 4973 | r = split_name_printf(p, &resolved); |
4cee8333 DDM |
4974 | if (r < 0) |
4975 | return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format); | |
62108348 DDM |
4976 | |
4977 | if (parent) | |
4978 | p->split_path = strjoin(parent, "/", base, ".", resolved, ext); | |
4979 | else | |
4980 | p->split_path = strjoin(base, ".", resolved, ext); | |
4981 | if (!p->split_path) | |
4982 | return log_oom(); | |
4cee8333 DDM |
4983 | } |
4984 | ||
4985 | LIST_FOREACH(partitions, p, context->partitions) { | |
62108348 | 4986 | if (!p->split_path) |
4cee8333 DDM |
4987 | continue; |
4988 | ||
4989 | LIST_FOREACH(partitions, q, context->partitions) { | |
4990 | if (p == q) | |
4991 | continue; | |
4992 | ||
62108348 | 4993 | if (!q->split_path) |
4cee8333 DDM |
4994 | continue; |
4995 | ||
62108348 | 4996 | if (!streq(p->split_path, q->split_path)) |
4cee8333 DDM |
4997 | continue; |
4998 | ||
4999 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
5000 | "%s and %s have the same resolved split name \"%s\", refusing", | |
62108348 | 5001 | p->definition_path, q->definition_path, p->split_path); |
4cee8333 DDM |
5002 | } |
5003 | } | |
5004 | ||
5005 | return 0; | |
5006 | } | |
5007 | ||
4cee8333 | 5008 | static int context_split(Context *context) { |
254d1313 | 5009 | int fd = -EBADF, r; |
4cee8333 DDM |
5010 | |
5011 | if (!arg_split) | |
5012 | return 0; | |
5013 | ||
5014 | assert(context); | |
4cee8333 DDM |
5015 | |
5016 | /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled | |
5017 | * in after they've been generated. */ | |
5018 | ||
5019 | r = split_name_resolve(context); | |
5020 | if (r < 0) | |
5021 | return r; | |
5022 | ||
4cee8333 | 5023 | LIST_FOREACH(partitions, p, context->partitions) { |
254d1313 | 5024 | _cleanup_close_ int fdt = -EBADF; |
4cee8333 DDM |
5025 | |
5026 | if (p->dropped) | |
5027 | continue; | |
5028 | ||
62108348 | 5029 | if (!p->split_path) |
4cee8333 DDM |
5030 | continue; |
5031 | ||
8275334b | 5032 | if (partition_defer(p)) |
81d1098b DDM |
5033 | continue; |
5034 | ||
62108348 | 5035 | fdt = open(p->split_path, O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL, 0666); |
4cee8333 | 5036 | if (fdt < 0) |
62108348 | 5037 | return log_error_errno(fdt, "Failed to open split partition file %s: %m", p->split_path); |
4cee8333 DDM |
5038 | |
5039 | if (fd < 0) | |
5040 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
5041 | ||
5042 | if (lseek(fd, p->offset, SEEK_SET) < 0) | |
5043 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
5044 | ||
ab645e0a | 5045 | r = copy_bytes(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES|COPY_TRUNCATE); |
4cee8333 | 5046 | if (r < 0) |
62108348 | 5047 | return log_error_errno(r, "Failed to copy to split partition %s: %m", p->split_path); |
4cee8333 DDM |
5048 | } |
5049 | ||
5050 | return 0; | |
5051 | } | |
5052 | ||
cc751c75 | 5053 | static int context_write_partition_table(Context *context) { |
f28d4f42 LP |
5054 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; |
5055 | int capable, r; | |
5056 | ||
5057 | assert(context); | |
5058 | ||
cc751c75 | 5059 | if (!context->from_scratch && !context_changed(context)) { |
f28d4f42 LP |
5060 | log_info("No changes."); |
5061 | return 0; | |
5062 | } | |
5063 | ||
5064 | if (arg_dry_run) { | |
5065 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
5066 | return 0; | |
5067 | } | |
5068 | ||
5069 | log_info("Applying changes."); | |
5070 | ||
cc751c75 | 5071 | if (context->from_scratch) { |
81873a6b LP |
5072 | r = context_wipe_range(context, 0, context->total); |
5073 | if (r < 0) | |
5074 | return r; | |
5075 | ||
5076 | log_info("Wiped block device."); | |
5077 | ||
0dce448b LB |
5078 | if (arg_discard) { |
5079 | r = context_discard_range(context, 0, context->total); | |
5080 | if (r == -EOPNOTSUPP) | |
5081 | log_info("Storage does not support discard, not discarding entire block device data."); | |
5082 | else if (r < 0) | |
5083 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
5084 | else if (r > 0) | |
5085 | log_info("Discarded entire block device."); | |
5086 | } | |
f28d4f42 LP |
5087 | } |
5088 | ||
5089 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
5090 | if (r < 0) | |
5091 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
5092 | ||
5093 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
5094 | * gaps between partitions, just to be sure. */ | |
cc751c75 | 5095 | r = context_wipe_and_discard(context); |
f28d4f42 LP |
5096 | if (r < 0) |
5097 | return r; | |
5098 | ||
5099 | r = context_copy_blocks(context); | |
5100 | if (r < 0) | |
5101 | return r; | |
5102 | ||
5103 | r = context_mkfs(context); | |
5104 | if (r < 0) | |
5105 | return r; | |
5106 | ||
5107 | r = context_mangle_partitions(context); | |
5108 | if (r < 0) | |
5109 | return r; | |
5110 | ||
e594a3b1 LP |
5111 | log_info("Writing new partition table."); |
5112 | ||
5113 | r = fdisk_write_disklabel(context->fdisk_context); | |
5114 | if (r < 0) | |
5115 | return log_error_errno(r, "Failed to write partition table: %m"); | |
5116 | ||
911ba624 | 5117 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
5118 | if (capable == -ENOTBLK) |
5119 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
5120 | else if (capable < 0) | |
911ba624 | 5121 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 5122 | else if (capable > 0) { |
e594a3b1 LP |
5123 | log_info("Telling kernel to reread partition table."); |
5124 | ||
cc751c75 | 5125 | if (context->from_scratch) |
e594a3b1 LP |
5126 | r = fdisk_reread_partition_table(context->fdisk_context); |
5127 | else | |
5128 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
5129 | if (r < 0) | |
5130 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
5131 | } else | |
5132 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
5133 | ||
5134 | log_info("All done."); | |
5135 | ||
5136 | return 0; | |
5137 | } | |
5138 | ||
5139 | static int context_read_seed(Context *context, const char *root) { | |
5140 | int r; | |
5141 | ||
5142 | assert(context); | |
5143 | ||
5144 | if (!sd_id128_is_null(context->seed)) | |
5145 | return 0; | |
5146 | ||
5147 | if (!arg_randomize) { | |
5ee37b70 YW |
5148 | r = id128_get_machine(root, &context->seed); |
5149 | if (r >= 0) | |
5150 | return 0; | |
e594a3b1 | 5151 | |
5ee37b70 YW |
5152 | if (!ERRNO_IS_MACHINE_ID_UNSET(r)) |
5153 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
74e795ee | 5154 | |
5ee37b70 | 5155 | log_info("No machine ID set, using randomized partition UUIDs."); |
e594a3b1 LP |
5156 | } |
5157 | ||
5158 | r = sd_id128_randomize(&context->seed); | |
5159 | if (r < 0) | |
5160 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
5161 | ||
5162 | return 0; | |
5163 | } | |
5164 | ||
cc751c75 | 5165 | static int context_factory_reset(Context *context) { |
e594a3b1 LP |
5166 | size_t n = 0; |
5167 | int r; | |
5168 | ||
5169 | assert(context); | |
5170 | ||
5171 | if (arg_factory_reset <= 0) | |
5172 | return 0; | |
5173 | ||
cc751c75 | 5174 | if (context->from_scratch) /* Nothing to reset if we start from scratch */ |
e594a3b1 LP |
5175 | return 0; |
5176 | ||
5177 | if (arg_dry_run) { | |
5178 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
5179 | return 0; | |
5180 | } | |
5181 | ||
5182 | log_info("Applying factory reset."); | |
5183 | ||
5184 | LIST_FOREACH(partitions, p, context->partitions) { | |
5185 | ||
5186 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
5187 | continue; | |
5188 | ||
5189 | assert(p->partno != UINT64_MAX); | |
5190 | ||
5191 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
5192 | ||
5193 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
5194 | if (r < 0) | |
5195 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
5196 | ||
5197 | n++; | |
5198 | } | |
5199 | ||
5200 | if (n == 0) { | |
5201 | log_info("Factory reset requested, but no partitions to delete found."); | |
5202 | return 0; | |
5203 | } | |
5204 | ||
5205 | r = fdisk_write_disklabel(context->fdisk_context); | |
5206 | if (r < 0) | |
5207 | return log_error_errno(r, "Failed to write disk label: %m"); | |
5208 | ||
5209 | log_info("Successfully deleted %zu partitions.", n); | |
5210 | return 1; | |
5211 | } | |
5212 | ||
5213 | static int context_can_factory_reset(Context *context) { | |
e594a3b1 LP |
5214 | assert(context); |
5215 | ||
5216 | LIST_FOREACH(partitions, p, context->partitions) | |
5217 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
5218 | return true; | |
5219 | ||
5220 | return false; | |
5221 | } | |
5222 | ||
5c08da58 LP |
5223 | static int resolve_copy_blocks_auto_candidate( |
5224 | dev_t partition_devno, | |
22e932f4 | 5225 | GptPartitionType partition_type, |
5c08da58 LP |
5226 | dev_t restrict_devno, |
5227 | sd_id128_t *ret_uuid) { | |
5228 | ||
5229 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
254d1313 | 5230 | _cleanup_close_ int fd = -EBADF; |
ca822829 YW |
5231 | _cleanup_free_ char *p = NULL; |
5232 | const char *pttype, *t; | |
5c08da58 LP |
5233 | sd_id128_t pt_parsed, u; |
5234 | blkid_partition pp; | |
5235 | dev_t whole_devno; | |
5236 | blkid_partlist pl; | |
5c08da58 LP |
5237 | int r; |
5238 | ||
5239 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
5240 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
5241 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
5242 | * one of the two. */ | |
5243 | ||
5244 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
5245 | if (r < 0) | |
5246 | return log_error_errno( | |
5247 | r, | |
5248 | "Unable to determine containing block device of partition %u:%u: %m", | |
5249 | major(partition_devno), minor(partition_devno)); | |
5250 | ||
5251 | if (restrict_devno != (dev_t) -1 && | |
5252 | restrict_devno != whole_devno) | |
5253 | return log_error_errno( | |
5254 | SYNTHETIC_ERRNO(EPERM), | |
5255 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
5256 | major(partition_devno), minor(partition_devno), | |
5257 | major(restrict_devno), minor(restrict_devno)); | |
5258 | ||
ca822829 | 5259 | fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p); |
5c08da58 | 5260 | if (r < 0) |
ca822829 YW |
5261 | return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m", |
5262 | DEVNUM_FORMAT_VAL(whole_devno)); | |
5c08da58 LP |
5263 | |
5264 | b = blkid_new_probe(); | |
5265 | if (!b) | |
5266 | return log_oom(); | |
5267 | ||
5268 | errno = 0; | |
5269 | r = blkid_probe_set_device(b, fd, 0, 0); | |
5270 | if (r != 0) | |
5271 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
5272 | ||
5273 | (void) blkid_probe_enable_partitions(b, 1); | |
5274 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
5275 | ||
5276 | errno = 0; | |
5277 | r = blkid_do_safeprobe(b); | |
2e3944b8 LP |
5278 | if (r == _BLKID_SAFEPROBE_ERROR) |
5279 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
5280 | if (IN_SET(r, _BLKID_SAFEPROBE_AMBIGUOUS, _BLKID_SAFEPROBE_NOT_FOUND)) { | |
5c08da58 LP |
5281 | log_debug("Didn't find partition table on block device '%s'.", p); |
5282 | return false; | |
5283 | } | |
2e3944b8 LP |
5284 | |
5285 | assert(r == _BLKID_SAFEPROBE_FOUND); | |
5c08da58 LP |
5286 | |
5287 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
5288 | if (!streq_ptr(pttype, "gpt")) { | |
5289 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
5290 | return false; | |
5291 | } | |
5292 | ||
5293 | errno = 0; | |
5294 | pl = blkid_probe_get_partitions(b); | |
5295 | if (!pl) | |
5296 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
5c08da58 LP |
5297 | |
5298 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
5299 | if (!pp) { | |
5300 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
5301 | major(partition_devno), minor(partition_devno), p); | |
5302 | return false; | |
5303 | } | |
5304 | ||
5305 | t = blkid_partition_get_type_string(pp); | |
5306 | if (isempty(t)) { | |
5307 | log_debug("Partition %u:%u has no type on '%s'.", | |
5308 | major(partition_devno), minor(partition_devno), p); | |
5309 | return false; | |
5310 | } | |
5311 | ||
5312 | r = sd_id128_from_string(t, &pt_parsed); | |
5313 | if (r < 0) { | |
5314 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
5315 | return false; | |
5316 | } | |
5317 | ||
22e932f4 | 5318 | if (!sd_id128_equal(pt_parsed, partition_type.uuid)) { |
5c08da58 LP |
5319 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", |
5320 | major(partition_devno), minor(partition_devno), | |
22e932f4 | 5321 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type.uuid)); |
5c08da58 LP |
5322 | return false; |
5323 | } | |
5324 | ||
e3b9a5ff LP |
5325 | r = blkid_partition_get_uuid_id128(pp, &u); |
5326 | if (r == -ENXIO) { | |
5327 | log_debug_errno(r, "Partition " DEVNUM_FORMAT_STR " has no UUID.", DEVNUM_FORMAT_VAL(partition_devno)); | |
5c08da58 LP |
5328 | return false; |
5329 | } | |
5c08da58 | 5330 | if (r < 0) { |
e3b9a5ff | 5331 | log_debug_errno(r, "Failed to read partition UUID of " DEVNUM_FORMAT_STR ": %m", DEVNUM_FORMAT_VAL(partition_devno)); |
5c08da58 LP |
5332 | return false; |
5333 | } | |
5334 | ||
e3b9a5ff LP |
5335 | log_debug("Automatically found partition " DEVNUM_FORMAT_STR " of right type " SD_ID128_FORMAT_STR ".", |
5336 | DEVNUM_FORMAT_VAL(partition_devno), | |
5c08da58 LP |
5337 | SD_ID128_FORMAT_VAL(pt_parsed)); |
5338 | ||
5339 | if (ret_uuid) | |
5340 | *ret_uuid = u; | |
5341 | ||
5342 | return true; | |
5343 | } | |
5344 | ||
5345 | static int find_backing_devno( | |
5346 | const char *path, | |
5347 | const char *root, | |
5348 | dev_t *ret) { | |
5349 | ||
5350 | _cleanup_free_ char *resolved = NULL; | |
5351 | int r; | |
5352 | ||
5353 | assert(path); | |
5354 | ||
f461a28d | 5355 | r = chase(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); |
5c08da58 LP |
5356 | if (r < 0) |
5357 | return r; | |
5358 | ||
5359 | r = path_is_mount_point(resolved, NULL, 0); | |
5360 | if (r < 0) | |
5361 | return r; | |
5362 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
5363 | return -ENOENT; | |
5364 | ||
5365 | r = get_block_device(resolved, ret); | |
5366 | if (r < 0) | |
5367 | return r; | |
5368 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
5369 | return -ENOENT; | |
5370 | ||
5371 | return 0; | |
5372 | } | |
5373 | ||
5374 | static int resolve_copy_blocks_auto( | |
22e932f4 | 5375 | GptPartitionType type, |
5c08da58 LP |
5376 | const char *root, |
5377 | dev_t restrict_devno, | |
1a037ba2 | 5378 | dev_t *ret_devno, |
5c08da58 LP |
5379 | sd_id128_t *ret_uuid) { |
5380 | ||
5381 | const char *try1 = NULL, *try2 = NULL; | |
5382 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
5d2a48da | 5383 | _cleanup_closedir_ DIR *d = NULL; |
5c08da58 LP |
5384 | sd_id128_t found_uuid = SD_ID128_NULL; |
5385 | dev_t devno, found = 0; | |
5386 | int r; | |
5387 | ||
5c08da58 LP |
5388 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the |
5389 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
5390 | * and restrict block device references in the --image= case to loopback block device we set up. | |
5391 | * | |
5392 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
5393 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
5394 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
5395 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
5396 | ||
5397 | if (restrict_devno == 0) | |
5398 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5399 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
5400 | ||
5401 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching | |
5402 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
5403 | * type matches. */ | |
5404 | ||
22e932f4 | 5405 | if (type.designator == PARTITION_ROOT) |
5c08da58 | 5406 | try1 = "/"; |
22e932f4 | 5407 | else if (type.designator == PARTITION_USR) |
5c08da58 | 5408 | try1 = "/usr/"; |
22e932f4 | 5409 | else if (type.designator == PARTITION_ROOT_VERITY) |
5c08da58 | 5410 | try1 = "/"; |
22e932f4 | 5411 | else if (type.designator == PARTITION_USR_VERITY) |
5c08da58 | 5412 | try1 = "/usr/"; |
22e932f4 | 5413 | else if (type.designator == PARTITION_ESP) { |
5c08da58 LP |
5414 | try1 = "/efi/"; |
5415 | try2 = "/boot/"; | |
22e932f4 | 5416 | } else if (type.designator == PARTITION_XBOOTLDR) |
5c08da58 LP |
5417 | try1 = "/boot/"; |
5418 | else | |
5419 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
5420 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
22e932f4 | 5421 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5422 | |
5423 | r = find_backing_devno(try1, root, &devno); | |
5424 | if (r == -ENOENT && try2) | |
5425 | r = find_backing_devno(try2, root, &devno); | |
5426 | if (r < 0) | |
5427 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
22e932f4 | 5428 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5429 | |
5430 | xsprintf_sys_block_path(p, "/slaves", devno); | |
5431 | d = opendir(p); | |
5432 | if (d) { | |
5433 | struct dirent *de; | |
5434 | ||
5435 | for (;;) { | |
5436 | _cleanup_free_ char *q = NULL, *t = NULL; | |
5437 | sd_id128_t u; | |
5438 | dev_t sl; | |
5439 | ||
5440 | errno = 0; | |
5441 | de = readdir_no_dot(d); | |
5442 | if (!de) { | |
5443 | if (errno != 0) | |
5444 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
5445 | ||
5446 | break; | |
5447 | } | |
5448 | ||
5449 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
5450 | continue; | |
5451 | ||
5452 | q = path_join(p, de->d_name, "/dev"); | |
5453 | if (!q) | |
5454 | return log_oom(); | |
5455 | ||
5456 | r = read_one_line_file(q, &t); | |
5457 | if (r < 0) | |
5458 | return log_error_errno(r, "Failed to read %s: %m", q); | |
5459 | ||
7176f06c | 5460 | r = parse_devnum(t, &sl); |
5c08da58 LP |
5461 | if (r < 0) { |
5462 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
5463 | continue; | |
5464 | } | |
5465 | if (major(sl) == 0) { | |
375ffdba | 5466 | log_debug("Device backing %s is special, ignoring.", q); |
5c08da58 LP |
5467 | continue; |
5468 | } | |
5469 | ||
22e932f4 | 5470 | r = resolve_copy_blocks_auto_candidate(sl, type, restrict_devno, &u); |
5c08da58 LP |
5471 | if (r < 0) |
5472 | return r; | |
5473 | if (r > 0) { | |
5474 | /* We found a matching one! */ | |
5475 | if (found != 0) | |
5476 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
5477 | "Multiple matching partitions found, refusing."); | |
5478 | ||
5479 | found = sl; | |
5480 | found_uuid = u; | |
5481 | } | |
5482 | } | |
5483 | } else if (errno != ENOENT) | |
5484 | return log_error_errno(errno, "Failed open %s: %m", p); | |
5485 | else { | |
22e932f4 | 5486 | r = resolve_copy_blocks_auto_candidate(devno, type, restrict_devno, &found_uuid); |
5c08da58 LP |
5487 | if (r < 0) |
5488 | return r; | |
5489 | if (r > 0) | |
5490 | found = devno; | |
5491 | } | |
5492 | ||
5493 | if (found == 0) | |
5494 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
5495 | "Unable to automatically discover suitable partition to copy blocks from."); | |
5496 | ||
1a037ba2 YW |
5497 | if (ret_devno) |
5498 | *ret_devno = found; | |
5c08da58 LP |
5499 | |
5500 | if (ret_uuid) | |
5501 | *ret_uuid = found_uuid; | |
5502 | ||
5503 | return 0; | |
5504 | } | |
5505 | ||
5506 | static int context_open_copy_block_paths( | |
5507 | Context *context, | |
5c08da58 LP |
5508 | dev_t restrict_devno) { |
5509 | ||
757bc2e4 LP |
5510 | int r; |
5511 | ||
5512 | assert(context); | |
5513 | ||
5514 | LIST_FOREACH(partitions, p, context->partitions) { | |
254d1313 | 5515 | _cleanup_close_ int source_fd = -EBADF; |
5c08da58 LP |
5516 | _cleanup_free_ char *opened = NULL; |
5517 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
5518 | uint64_t size; |
5519 | struct stat st; | |
5520 | ||
5eef7047 DDM |
5521 | if (p->copy_blocks_fd >= 0) |
5522 | continue; | |
5523 | ||
757bc2e4 LP |
5524 | assert(p->copy_blocks_size == UINT64_MAX); |
5525 | ||
5526 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
5527 | continue; | |
5528 | ||
5c08da58 | 5529 | if (p->copy_blocks_path) { |
757bc2e4 | 5530 | |
f461a28d | 5531 | 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 |
5532 | if (source_fd < 0) |
5533 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 5534 | |
5c08da58 LP |
5535 | if (fstat(source_fd, &st) < 0) |
5536 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
5537 | ||
5538 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
5539 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5540 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
5541 | ||
5542 | } else if (p->copy_blocks_auto) { | |
03f5e501 | 5543 | dev_t devno = 0; /* Fake initialization to appease gcc. */ |
5c08da58 | 5544 | |
22e932f4 | 5545 | r = resolve_copy_blocks_auto(p->type, p->copy_blocks_root, restrict_devno, &devno, &uuid); |
5c08da58 LP |
5546 | if (r < 0) |
5547 | return r; | |
03f5e501 | 5548 | assert(devno != 0); |
5c08da58 | 5549 | |
ca822829 | 5550 | source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
1a037ba2 | 5551 | if (r < 0) |
ca822829 YW |
5552 | return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m", |
5553 | DEVNUM_FORMAT_VAL(devno)); | |
5c08da58 LP |
5554 | |
5555 | if (fstat(source_fd, &st) < 0) | |
5556 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
1a037ba2 | 5557 | } else |
5c08da58 | 5558 | continue; |
757bc2e4 LP |
5559 | |
5560 | if (S_ISDIR(st.st_mode)) { | |
ca822829 YW |
5561 | _cleanup_free_ char *bdev = NULL; |
5562 | dev_t devt; | |
757bc2e4 LP |
5563 | |
5564 | /* If the file is a directory, automatically find the backing block device */ | |
5565 | ||
5566 | if (major(st.st_dev) != 0) | |
ca822829 | 5567 | devt = st.st_dev; |
757bc2e4 | 5568 | else { |
757bc2e4 | 5569 | /* Special support for btrfs */ |
757bc2e4 | 5570 | r = btrfs_get_block_device_fd(source_fd, &devt); |
67f0ac8c | 5571 | if (r == -EUCLEAN) |
5c08da58 | 5572 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 5573 | if (r < 0) |
5c08da58 | 5574 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 | 5575 | } |
757bc2e4 LP |
5576 | |
5577 | safe_close(source_fd); | |
5578 | ||
ca822829 YW |
5579 | source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev); |
5580 | if (r < 0) | |
5581 | return log_error_errno(r, "Failed to open block device backing '%s': %m", opened); | |
757bc2e4 LP |
5582 | |
5583 | if (fstat(source_fd, &st) < 0) | |
5584 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
757bc2e4 LP |
5585 | } |
5586 | ||
5587 | if (S_ISREG(st.st_mode)) | |
5588 | size = st.st_size; | |
5589 | else if (S_ISBLK(st.st_mode)) { | |
5590 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
5591 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
5592 | } else | |
5c08da58 | 5593 | 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 |
5594 | |
5595 | if (size <= 0) | |
5c08da58 | 5596 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 5597 | if (size % 512 != 0) |
5c08da58 | 5598 | 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 |
5599 | |
5600 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
5601 | p->copy_blocks_size = size; | |
5c08da58 LP |
5602 | |
5603 | free_and_replace(p->copy_blocks_path, opened); | |
5604 | ||
5605 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
11749b61 | 5606 | if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) { |
5c08da58 | 5607 | p->new_uuid = uuid; |
11749b61 DDM |
5608 | p->new_uuid_is_set = true; |
5609 | } | |
757bc2e4 LP |
5610 | } |
5611 | ||
5612 | return 0; | |
5613 | } | |
5614 | ||
c4a87b76 DDM |
5615 | static int fd_apparent_size(int fd, uint64_t *ret) { |
5616 | off_t initial = 0; | |
5617 | uint64_t size = 0; | |
5618 | ||
5619 | assert(fd >= 0); | |
5620 | assert(ret); | |
5621 | ||
5622 | initial = lseek(fd, 0, SEEK_CUR); | |
5623 | if (initial < 0) | |
5624 | return log_error_errno(errno, "Failed to get file offset: %m"); | |
5625 | ||
5626 | for (off_t off = 0;;) { | |
5627 | off_t r; | |
5628 | ||
5629 | r = lseek(fd, off, SEEK_DATA); | |
5630 | if (r < 0 && errno == ENXIO) | |
5631 | /* If errno == ENXIO, that means we've reached the final hole of the file and | |
5632 | * that hole isn't followed by more data. */ | |
5633 | break; | |
5634 | if (r < 0) | |
5635 | return log_error_errno(errno, "Failed to seek data in file from offset %"PRIi64": %m", off); | |
5636 | ||
5637 | off = r; /* Set the offset to the start of the data segment. */ | |
5638 | ||
5639 | /* After copying a potential hole, find the end of the data segment by looking for | |
5640 | * the next hole. If we get ENXIO, we're at EOF. */ | |
5641 | r = lseek(fd, off, SEEK_HOLE); | |
5642 | if (r < 0) { | |
5643 | if (errno == ENXIO) | |
5644 | break; | |
5645 | return log_error_errno(errno, "Failed to seek hole in file from offset %"PRIi64": %m", off); | |
5646 | } | |
5647 | ||
5648 | size += r - off; | |
5649 | off = r; | |
5650 | } | |
5651 | ||
5652 | if (lseek(fd, initial, SEEK_SET) < 0) | |
5653 | return log_error_errno(errno, "Failed to reset file offset: %m"); | |
5654 | ||
5655 | *ret = size; | |
5656 | ||
5657 | return 0; | |
5658 | } | |
5659 | ||
5660 | static int context_minimize(Context *context) { | |
c264ec5f | 5661 | const char *vt = NULL; |
c4a87b76 DDM |
5662 | int r; |
5663 | ||
5664 | assert(context); | |
5665 | ||
c4a87b76 | 5666 | LIST_FOREACH(partitions, p, context->partitions) { |
e59678b2 | 5667 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
c4a87b76 | 5668 | _cleanup_(unlink_and_freep) char *temp = NULL; |
d3201eb4 | 5669 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
4b8ce14f | 5670 | _cleanup_strv_free_ char **extra_mkfs_options = NULL; |
254d1313 | 5671 | _cleanup_close_ int fd = -EBADF; |
b24bfd6e | 5672 | _cleanup_free_ char *hint = NULL; |
c4a87b76 DDM |
5673 | sd_id128_t fs_uuid; |
5674 | uint64_t fsz; | |
5675 | ||
5676 | if (p->dropped) | |
5677 | continue; | |
5678 | ||
5679 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
5680 | continue; | |
5681 | ||
5682 | if (!p->format) | |
5683 | continue; | |
5684 | ||
5c33b686 | 5685 | if (p->minimize == MINIMIZE_OFF) |
c4a87b76 DDM |
5686 | continue; |
5687 | ||
d3201eb4 DDM |
5688 | if (!partition_needs_populate(p)) |
5689 | continue; | |
5690 | ||
c4a87b76 DDM |
5691 | assert(!p->copy_blocks_path); |
5692 | ||
b24bfd6e DDM |
5693 | (void) partition_hint(p, context->node, &hint); |
5694 | ||
5695 | log_info("Pre-populating %s filesystem of partition %s twice to calculate minimal partition size", | |
5696 | p->format, strna(hint)); | |
5697 | ||
c264ec5f ZJS |
5698 | if (!vt) { |
5699 | r = var_tmp_dir(&vt); | |
5700 | if (r < 0) | |
5701 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
5702 | } | |
5703 | ||
c4a87b76 DDM |
5704 | r = tempfn_random_child(vt, "repart", &temp); |
5705 | if (r < 0) | |
5706 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
5707 | ||
59e2be46 DDM |
5708 | if (fstype_is_ro(p->format)) |
5709 | fs_uuid = p->fs_uuid; | |
5710 | else { | |
c4a87b76 DDM |
5711 | fd = open(temp, O_CREAT|O_EXCL|O_CLOEXEC|O_RDWR|O_NOCTTY, 0600); |
5712 | if (fd < 0) | |
5713 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
5714 | ||
5715 | /* This may seem huge but it will be created sparse so it doesn't take up any space | |
d3201eb4 | 5716 | * on disk until written to. */ |
c4a87b76 DDM |
5717 | if (ftruncate(fd, 1024ULL * 1024ULL * 1024ULL * 1024ULL) < 0) |
5718 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
5719 | FORMAT_BYTES(1024ULL * 1024ULL * 1024ULL * 1024ULL)); | |
5720 | ||
d3201eb4 DDM |
5721 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, 0, 0, LOCK_EX, &d); |
5722 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
5723 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5724 | ||
c4a87b76 DDM |
5725 | /* We're going to populate this filesystem twice so use a random UUID the first time |
5726 | * to avoid UUID conflicts. */ | |
5727 | r = sd_id128_randomize(&fs_uuid); | |
5728 | if (r < 0) | |
5729 | return r; | |
59e2be46 DDM |
5730 | } |
5731 | ||
d3201eb4 DDM |
5732 | if (!d || fstype_is_ro(p->format)) { |
5733 | if (!mkfs_supports_root_option(p->format)) | |
5734 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
5735 | "Loop device access is required to populate %s filesystems", | |
5736 | p->format); | |
5737 | ||
e57b7020 | 5738 | r = partition_populate_directory(context, p, &root); |
c4a87b76 DDM |
5739 | if (r < 0) |
5740 | return r; | |
c4a87b76 DDM |
5741 | } |
5742 | ||
4b8ce14f DDM |
5743 | r = mkfs_options_from_env("REPART", p->format, &extra_mkfs_options); |
5744 | if (r < 0) | |
5745 | return log_error_errno(r, | |
5746 | "Failed to determine mkfs command line options for '%s': %m", | |
5747 | p->format); | |
5748 | ||
e1878ef7 | 5749 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, fs_uuid, |
2bc161dd | 5750 | arg_discard, /* quiet = */ false, context->sector_size, extra_mkfs_options); |
c4a87b76 DDM |
5751 | if (r < 0) |
5752 | return r; | |
5753 | ||
5754 | /* Read-only filesystems are minimal from the first try because they create and size the | |
5755 | * loopback file for us. */ | |
5756 | if (fstype_is_ro(p->format)) { | |
b24bfd6e DDM |
5757 | struct stat st; |
5758 | ||
5759 | if (stat(temp, &st) < 0) | |
5760 | return log_error_errno(errno, "Failed to stat temporary file: %m"); | |
5761 | ||
5762 | log_info("Minimal partition size of %s filesystem of partition %s is %s", | |
5763 | p->format, strna(hint), FORMAT_BYTES(st.st_size)); | |
5764 | ||
c4a87b76 | 5765 | p->copy_blocks_path = TAKE_PTR(temp); |
7d07030e | 5766 | p->copy_blocks_path_is_our_file = true; |
c4a87b76 DDM |
5767 | continue; |
5768 | } | |
5769 | ||
d3201eb4 DDM |
5770 | if (!root) { |
5771 | assert(d); | |
5772 | ||
e57b7020 | 5773 | r = partition_populate_filesystem(context, p, d->node); |
59e2be46 DDM |
5774 | if (r < 0) |
5775 | return r; | |
5776 | } | |
c4a87b76 DDM |
5777 | |
5778 | /* Other filesystems need to be provided with a pre-sized loopback file and will adapt to | |
5779 | * fully occupy it. Because we gave the filesystem a 1T sparse file, we need to shrink the | |
5780 | * filesystem down to a reasonable size again to fit it in the disk image. While there are | |
5781 | * some filesystems that support shrinking, it doesn't always work properly (e.g. shrinking | |
5782 | * btrfs gives us a 2.0G filesystem regardless of what we put in it). Instead, let's populate | |
5783 | * the filesystem again, but this time, instead of providing the filesystem with a 1T sparse | |
5784 | * loopback file, let's size the loopback file based on the actual data used by the | |
5785 | * filesystem in the sparse file after the first attempt. This should be a good guess of the | |
5786 | * minimal amount of space needed in the filesystem to fit all the required data. | |
5787 | */ | |
5788 | r = fd_apparent_size(fd, &fsz); | |
5789 | if (r < 0) | |
5790 | return r; | |
5791 | ||
5792 | /* Massage the size a bit because just going by actual data used in the sparse file isn't | |
5793 | * fool-proof. */ | |
5794 | fsz = round_up_size(fsz + (fsz / 2), context->grain_size); | |
5795 | if (minimal_size_by_fs_name(p->format) != UINT64_MAX) | |
5796 | fsz = MAX(minimal_size_by_fs_name(p->format), fsz); | |
5797 | ||
b24bfd6e DDM |
5798 | log_info("Minimal partition size of %s filesystem of partition %s is %s", |
5799 | p->format, strna(hint), FORMAT_BYTES(fsz)); | |
5800 | ||
d3201eb4 DDM |
5801 | d = loop_device_unref(d); |
5802 | ||
c4a87b76 DDM |
5803 | /* Erase the previous filesystem first. */ |
5804 | if (ftruncate(fd, 0)) | |
5805 | return log_error_errno(errno, "Failed to erase temporary file: %m"); | |
5806 | ||
5807 | if (ftruncate(fd, fsz)) | |
5808 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", FORMAT_BYTES(fsz)); | |
5809 | ||
d3201eb4 DDM |
5810 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, 0, 0, LOCK_EX, &d); |
5811 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
5812 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5813 | ||
e1878ef7 | 5814 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, p->fs_uuid, |
2bc161dd | 5815 | arg_discard, /* quiet = */ false, context->sector_size, extra_mkfs_options); |
c4a87b76 DDM |
5816 | if (r < 0) |
5817 | return r; | |
5818 | ||
d3201eb4 DDM |
5819 | if (!root) { |
5820 | assert(d); | |
5821 | ||
e57b7020 | 5822 | r = partition_populate_filesystem(context, p, d->node); |
59e2be46 DDM |
5823 | if (r < 0) |
5824 | return r; | |
5825 | } | |
c4a87b76 DDM |
5826 | |
5827 | p->copy_blocks_path = TAKE_PTR(temp); | |
7d07030e | 5828 | p->copy_blocks_path_is_our_file = true; |
c4a87b76 DDM |
5829 | } |
5830 | ||
5eef7047 DDM |
5831 | /* Now that we've done the data partitions, do the verity hash partitions. We do these in a separate |
5832 | * step because they might depend on data generated in the previous step. */ | |
5833 | ||
5834 | LIST_FOREACH(partitions, p, context->partitions) { | |
5835 | _cleanup_(unlink_and_freep) char *temp = NULL; | |
5836 | _cleanup_free_ char *hint = NULL; | |
5837 | struct stat st; | |
5838 | Partition *dp; | |
5839 | ||
5840 | if (p->dropped) | |
5841 | continue; | |
5842 | ||
5843 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
5844 | continue; | |
5845 | ||
5846 | if (p->minimize == MINIMIZE_OFF) | |
5847 | continue; | |
5848 | ||
5849 | if (p->verity != VERITY_HASH) | |
5850 | continue; | |
5851 | ||
5852 | assert_se(dp = p->siblings[VERITY_DATA]); | |
5853 | assert(!dp->dropped); | |
5854 | assert(dp->copy_blocks_path); | |
5855 | ||
5856 | (void) partition_hint(p, context->node, &hint); | |
5857 | ||
5858 | log_info("Pre-populating verity hash data of partition %s to calculate minimal partition size", | |
5859 | strna(hint)); | |
5860 | ||
c264ec5f ZJS |
5861 | if (!vt) { |
5862 | r = var_tmp_dir(&vt); | |
5863 | if (r < 0) | |
5864 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
5865 | } | |
5866 | ||
5eef7047 DDM |
5867 | r = tempfn_random_child(vt, "repart", &temp); |
5868 | if (r < 0) | |
5869 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
5870 | ||
5871 | r = touch(temp); | |
5872 | if (r < 0) | |
5873 | return log_error_errno(r, "Failed to create temporary file: %m"); | |
5874 | ||
5875 | r = partition_format_verity_hash(context, p, temp, dp->copy_blocks_path); | |
5876 | if (r < 0) | |
5877 | return r; | |
5878 | ||
5879 | if (stat(temp, &st) < 0) | |
5880 | return log_error_errno(r, "Failed to stat temporary file: %m"); | |
5881 | ||
5882 | log_info("Minimal partition size of verity hash partition %s is %s", | |
5883 | strna(hint), FORMAT_BYTES(st.st_size)); | |
5884 | ||
5885 | p->copy_blocks_path = TAKE_PTR(temp); | |
5886 | p->copy_blocks_path_is_our_file = true; | |
5887 | } | |
5888 | ||
c4a87b76 DDM |
5889 | return 0; |
5890 | } | |
5891 | ||
9786dfe6 | 5892 | static int parse_partition_types(const char *p, GptPartitionType **partitions, size_t *n_partitions) { |
81d1098b DDM |
5893 | int r; |
5894 | ||
220780db DDM |
5895 | assert(partitions); |
5896 | assert(n_partitions); | |
5897 | ||
81d1098b DDM |
5898 | for (;;) { |
5899 | _cleanup_free_ char *name = NULL; | |
5900 | GptPartitionType type; | |
5901 | ||
5902 | r = extract_first_word(&p, &name, ",", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
5903 | if (r == 0) | |
5904 | break; | |
5905 | if (r < 0) | |
766f52f2 | 5906 | return log_error_errno(r, "Failed to extract partition type identifier or GUID: %s", p); |
81d1098b DDM |
5907 | |
5908 | r = gpt_partition_type_from_string(name, &type); | |
5909 | if (r < 0) | |
766f52f2 | 5910 | return log_error_errno(r, "'%s' is not a valid partition type identifier or GUID", name); |
81d1098b | 5911 | |
220780db | 5912 | if (!GREEDY_REALLOC(*partitions, *n_partitions + 1)) |
81d1098b DDM |
5913 | return log_oom(); |
5914 | ||
9786dfe6 | 5915 | (*partitions)[(*n_partitions)++] = type; |
81d1098b DDM |
5916 | } |
5917 | ||
5918 | return 0; | |
5919 | } | |
5920 | ||
e594a3b1 LP |
5921 | static int help(void) { |
5922 | _cleanup_free_ char *link = NULL; | |
5923 | int r; | |
5924 | ||
6dadf31d | 5925 | r = terminal_urlify_man("systemd-repart", "8", &link); |
e594a3b1 LP |
5926 | if (r < 0) |
5927 | return log_oom(); | |
5928 | ||
5929 | printf("%s [OPTIONS...] [DEVICE]\n" | |
5930 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
5931 | " -h --help Show this help\n" | |
5932 | " --version Show package version\n" | |
896e678b LP |
5933 | " --no-pager Do not pipe output into a pager\n" |
5934 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 5935 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
5936 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
5937 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 5938 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 5939 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
5940 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
5941 | " them\n" | |
5942 | " --can-factory-reset Test whether factory reset is defined\n" | |
5943 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 5944 | " --image=PATH Operate relative to image file\n" |
84be0c71 LP |
5945 | " --image-policy=POLICY\n" |
5946 | " Specify disk image dissection policy\n" | |
9d252fbb | 5947 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 5948 | " --key-file=PATH Key to use when encrypting partitions\n" |
b456191d DDM |
5949 | " --private-key=PATH Private key to use when generating verity roothash\n" |
5950 | " signatures\n" | |
5951 | " --certificate=PATH PEM certificate to use when generating verity\n" | |
5952 | " roothash signatures\n" | |
889914ef | 5953 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 5954 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 5955 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
02ef97cd LP |
5956 | " --tpm2-public-key=PATH\n" |
5957 | " Enroll signed TPM2 PCR policy against PEM public key\n" | |
5958 | " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n" | |
5959 | " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n" | |
e594a3b1 | 5960 | " --seed=UUID 128bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 5961 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 5962 | " --json=pretty|short|off\n" |
de8231b0 | 5963 | " Generate JSON output\n" |
4cee8333 | 5964 | " --split=BOOL Whether to generate split artifacts\n" |
81d1098b | 5965 | " --include-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 5966 | " Ignore partitions not of the specified types\n" |
81d1098b | 5967 | " --exclude-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 5968 | " Ignore partitions of the specified types\n" |
8275334b | 5969 | " --defer-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 DDM |
5970 | " Take partitions of the specified types into account\n" |
5971 | " but don't populate them yet\n" | |
e1878ef7 | 5972 | " --sector-size=SIZE Set the logical sector size for the image\n" |
9786dfe6 | 5973 | " --architecture=ARCH Set the generic architecture for the image\n" |
fc10b158 | 5974 | " --offline=BOOL Whether to build the image offline\n" |
bc556335 DDM |
5975 | "\nSee the %s for details.\n", |
5976 | program_invocation_short_name, | |
5977 | ansi_highlight(), | |
5978 | ansi_normal(), | |
5979 | link); | |
e594a3b1 LP |
5980 | |
5981 | return 0; | |
5982 | } | |
5983 | ||
5984 | static int parse_argv(int argc, char *argv[]) { | |
5985 | ||
5986 | enum { | |
5987 | ARG_VERSION = 0x100, | |
896e678b LP |
5988 | ARG_NO_PAGER, |
5989 | ARG_NO_LEGEND, | |
e594a3b1 LP |
5990 | ARG_DRY_RUN, |
5991 | ARG_EMPTY, | |
5992 | ARG_DISCARD, | |
5993 | ARG_FACTORY_RESET, | |
5994 | ARG_CAN_FACTORY_RESET, | |
5995 | ARG_ROOT, | |
252d6267 | 5996 | ARG_IMAGE, |
06e78680 | 5997 | ARG_IMAGE_POLICY, |
e594a3b1 LP |
5998 | ARG_SEED, |
5999 | ARG_PRETTY, | |
6000 | ARG_DEFINITIONS, | |
a26f4a49 | 6001 | ARG_SIZE, |
a015fbe7 | 6002 | ARG_JSON, |
b9df3536 | 6003 | ARG_KEY_FILE, |
b456191d DDM |
6004 | ARG_PRIVATE_KEY, |
6005 | ARG_CERTIFICATE, | |
889914ef LP |
6006 | ARG_TPM2_DEVICE, |
6007 | ARG_TPM2_PCRS, | |
02ef97cd LP |
6008 | ARG_TPM2_PUBLIC_KEY, |
6009 | ARG_TPM2_PUBLIC_KEY_PCRS, | |
4cee8333 | 6010 | ARG_SPLIT, |
81d1098b DDM |
6011 | ARG_INCLUDE_PARTITIONS, |
6012 | ARG_EXCLUDE_PARTITIONS, | |
8275334b | 6013 | ARG_DEFER_PARTITIONS, |
e1878ef7 | 6014 | ARG_SECTOR_SIZE, |
84be0c71 | 6015 | ARG_SKIP_PARTITIONS, |
9786dfe6 | 6016 | ARG_ARCHITECTURE, |
fc10b158 | 6017 | ARG_OFFLINE, |
e594a3b1 LP |
6018 | }; |
6019 | ||
6020 | static const struct option options[] = { | |
02ef97cd LP |
6021 | { "help", no_argument, NULL, 'h' }, |
6022 | { "version", no_argument, NULL, ARG_VERSION }, | |
6023 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
6024 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
6025 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, | |
6026 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
6027 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
6028 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
6029 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
6030 | { "root", required_argument, NULL, ARG_ROOT }, | |
6031 | { "image", required_argument, NULL, ARG_IMAGE }, | |
06e78680 | 6032 | { "image-policy", required_argument, NULL, ARG_IMAGE_POLICY }, |
02ef97cd LP |
6033 | { "seed", required_argument, NULL, ARG_SEED }, |
6034 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
6035 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
6036 | { "size", required_argument, NULL, ARG_SIZE }, | |
6037 | { "json", required_argument, NULL, ARG_JSON }, | |
6038 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, | |
b456191d DDM |
6039 | { "private-key", required_argument, NULL, ARG_PRIVATE_KEY }, |
6040 | { "certificate", required_argument, NULL, ARG_CERTIFICATE }, | |
02ef97cd LP |
6041 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
6042 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
6043 | { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY }, | |
6044 | { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS }, | |
4cee8333 | 6045 | { "split", required_argument, NULL, ARG_SPLIT }, |
81d1098b DDM |
6046 | { "include-partitions", required_argument, NULL, ARG_INCLUDE_PARTITIONS }, |
6047 | { "exclude-partitions", required_argument, NULL, ARG_EXCLUDE_PARTITIONS }, | |
8275334b | 6048 | { "defer-partitions", required_argument, NULL, ARG_DEFER_PARTITIONS }, |
e1878ef7 | 6049 | { "sector-size", required_argument, NULL, ARG_SECTOR_SIZE }, |
9786dfe6 | 6050 | { "architecture", required_argument, NULL, ARG_ARCHITECTURE }, |
fc10b158 | 6051 | { "offline", required_argument, NULL, ARG_OFFLINE }, |
e594a3b1 LP |
6052 | {} |
6053 | }; | |
6054 | ||
a26f4a49 | 6055 | int c, r, dry_run = -1; |
e594a3b1 LP |
6056 | |
6057 | assert(argc >= 0); | |
6058 | assert(argv); | |
6059 | ||
6060 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
6061 | ||
6062 | switch (c) { | |
6063 | ||
6064 | case 'h': | |
6065 | return help(); | |
6066 | ||
6067 | case ARG_VERSION: | |
6068 | return version(); | |
6069 | ||
896e678b LP |
6070 | case ARG_NO_PAGER: |
6071 | arg_pager_flags |= PAGER_DISABLE; | |
6072 | break; | |
6073 | ||
6074 | case ARG_NO_LEGEND: | |
6075 | arg_legend = false; | |
6076 | break; | |
6077 | ||
e594a3b1 | 6078 | case ARG_DRY_RUN: |
599c7c54 | 6079 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 6080 | if (r < 0) |
599c7c54 | 6081 | return r; |
e594a3b1 LP |
6082 | break; |
6083 | ||
6084 | case ARG_EMPTY: | |
6085 | if (isempty(optarg) || streq(optarg, "refuse")) | |
6086 | arg_empty = EMPTY_REFUSE; | |
6087 | else if (streq(optarg, "allow")) | |
6088 | arg_empty = EMPTY_ALLOW; | |
6089 | else if (streq(optarg, "require")) | |
6090 | arg_empty = EMPTY_REQUIRE; | |
6091 | else if (streq(optarg, "force")) | |
6092 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
6093 | else if (streq(optarg, "create")) { |
6094 | arg_empty = EMPTY_CREATE; | |
6095 | ||
6096 | if (dry_run < 0) | |
6097 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
6098 | * anew. After all we cannot really break anyone's | |
6099 | * partition tables that way. */ | |
6100 | } else | |
e594a3b1 LP |
6101 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6102 | "Failed to parse --empty= parameter: %s", optarg); | |
6103 | break; | |
6104 | ||
6105 | case ARG_DISCARD: | |
599c7c54 | 6106 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 6107 | if (r < 0) |
599c7c54 | 6108 | return r; |
e594a3b1 LP |
6109 | break; |
6110 | ||
6111 | case ARG_FACTORY_RESET: | |
c3470872 | 6112 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 6113 | if (r < 0) |
c3470872 | 6114 | return r; |
e594a3b1 LP |
6115 | arg_factory_reset = r; |
6116 | break; | |
6117 | ||
6118 | case ARG_CAN_FACTORY_RESET: | |
6119 | arg_can_factory_reset = true; | |
6120 | break; | |
6121 | ||
6122 | case ARG_ROOT: | |
252d6267 LP |
6123 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
6124 | if (r < 0) | |
6125 | return r; | |
6126 | break; | |
6127 | ||
6128 | case ARG_IMAGE: | |
6129 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
6130 | if (r < 0) |
6131 | return r; | |
6132 | break; | |
6133 | ||
06e78680 YW |
6134 | case ARG_IMAGE_POLICY: |
6135 | r = parse_image_policy_argument(optarg, &arg_image_policy); | |
6136 | if (r < 0) | |
6137 | return r; | |
6138 | break; | |
6139 | ||
e594a3b1 LP |
6140 | case ARG_SEED: |
6141 | if (isempty(optarg)) { | |
6142 | arg_seed = SD_ID128_NULL; | |
6143 | arg_randomize = false; | |
6144 | } else if (streq(optarg, "random")) | |
6145 | arg_randomize = true; | |
6146 | else { | |
6147 | r = sd_id128_from_string(optarg, &arg_seed); | |
6148 | if (r < 0) | |
6149 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
6150 | ||
6151 | arg_randomize = false; | |
6152 | } | |
6153 | ||
6154 | break; | |
6155 | ||
6156 | case ARG_PRETTY: | |
c3470872 | 6157 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 6158 | if (r < 0) |
c3470872 | 6159 | return r; |
e594a3b1 LP |
6160 | arg_pretty = r; |
6161 | break; | |
6162 | ||
224c853f RP |
6163 | case ARG_DEFINITIONS: { |
6164 | _cleanup_free_ char *path = NULL; | |
6165 | r = parse_path_argument(optarg, false, &path); | |
e594a3b1 LP |
6166 | if (r < 0) |
6167 | return r; | |
224c853f RP |
6168 | if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0) |
6169 | return log_oom(); | |
e594a3b1 | 6170 | break; |
224c853f | 6171 | } |
e594a3b1 | 6172 | |
a26f4a49 LP |
6173 | case ARG_SIZE: { |
6174 | uint64_t parsed, rounded; | |
6175 | ||
170c9823 LP |
6176 | if (streq(optarg, "auto")) { |
6177 | arg_size = UINT64_MAX; | |
6178 | arg_size_auto = true; | |
6179 | break; | |
6180 | } | |
6181 | ||
a26f4a49 LP |
6182 | r = parse_size(optarg, 1024, &parsed); |
6183 | if (r < 0) | |
6184 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
6185 | ||
6186 | rounded = round_up_size(parsed, 4096); | |
6187 | if (rounded == 0) | |
6188 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
6189 | if (rounded == UINT64_MAX) | |
6190 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
6191 | ||
6192 | if (rounded != parsed) | |
e2341b6b DT |
6193 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")", |
6194 | parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded); | |
a26f4a49 LP |
6195 | |
6196 | arg_size = rounded; | |
170c9823 | 6197 | arg_size_auto = false; |
a26f4a49 LP |
6198 | break; |
6199 | } | |
b9df3536 | 6200 | |
a015fbe7 | 6201 | case ARG_JSON: |
b1e8f46c | 6202 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
6203 | if (r <= 0) |
6204 | return r; | |
a015fbe7 TH |
6205 | |
6206 | break; | |
6207 | ||
b9df3536 LP |
6208 | case ARG_KEY_FILE: { |
6209 | _cleanup_(erase_and_freep) char *k = NULL; | |
6210 | size_t n = 0; | |
6211 | ||
8b3c3a49 | 6212 | r = read_full_file_full( |
986311c2 | 6213 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
6214 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
6215 | NULL, | |
6216 | &k, &n); | |
b9df3536 LP |
6217 | if (r < 0) |
6218 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
6219 | ||
6220 | erase_and_free(arg_key); | |
6221 | arg_key = TAKE_PTR(k); | |
6222 | arg_key_size = n; | |
6223 | break; | |
6224 | } | |
a26f4a49 | 6225 | |
b456191d DDM |
6226 | case ARG_PRIVATE_KEY: { |
6227 | _cleanup_(erase_and_freep) char *k = NULL; | |
6228 | size_t n = 0; | |
6229 | ||
6230 | r = read_full_file_full( | |
6231 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
6232 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, | |
6233 | NULL, | |
6234 | &k, &n); | |
6235 | if (r < 0) | |
6236 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
6237 | ||
6238 | EVP_PKEY_free(arg_private_key); | |
6239 | arg_private_key = NULL; | |
6240 | r = parse_private_key(k, n, &arg_private_key); | |
6241 | if (r < 0) | |
6242 | return r; | |
6243 | break; | |
6244 | } | |
6245 | ||
6246 | case ARG_CERTIFICATE: { | |
6247 | _cleanup_free_ char *cert = NULL; | |
6248 | size_t n = 0; | |
6249 | ||
6250 | r = read_full_file_full( | |
6251 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
6252 | READ_FULL_FILE_CONNECT_SOCKET, | |
6253 | NULL, | |
6254 | &cert, &n); | |
6255 | if (r < 0) | |
6256 | return log_error_errno(r, "Failed to read certificate file '%s': %m", optarg); | |
6257 | ||
6258 | X509_free(arg_certificate); | |
6259 | arg_certificate = NULL; | |
6260 | r = parse_x509_certificate(cert, n, &arg_certificate); | |
6261 | if (r < 0) | |
6262 | return r; | |
6263 | break; | |
6264 | } | |
6265 | ||
889914ef LP |
6266 | case ARG_TPM2_DEVICE: { |
6267 | _cleanup_free_ char *device = NULL; | |
6268 | ||
6269 | if (streq(optarg, "list")) | |
6270 | return tpm2_list_devices(); | |
6271 | ||
6272 | if (!streq(optarg, "auto")) { | |
6273 | device = strdup(optarg); | |
6274 | if (!device) | |
6275 | return log_oom(); | |
6276 | } | |
6277 | ||
6278 | free(arg_tpm2_device); | |
6279 | arg_tpm2_device = TAKE_PTR(device); | |
6280 | break; | |
6281 | } | |
6282 | ||
222a951f LP |
6283 | case ARG_TPM2_PCRS: |
6284 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_pcr_mask); | |
889914ef LP |
6285 | if (r < 0) |
6286 | return r; | |
6287 | ||
889914ef | 6288 | break; |
889914ef | 6289 | |
02ef97cd LP |
6290 | case ARG_TPM2_PUBLIC_KEY: |
6291 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key); | |
6292 | if (r < 0) | |
6293 | return r; | |
6294 | ||
6295 | break; | |
6296 | ||
6297 | case ARG_TPM2_PUBLIC_KEY_PCRS: | |
6298 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_public_key_pcr_mask); | |
6299 | if (r < 0) | |
6300 | return r; | |
6301 | ||
6302 | break; | |
6303 | ||
4cee8333 DDM |
6304 | case ARG_SPLIT: |
6305 | r = parse_boolean_argument("--split=", optarg, NULL); | |
6306 | if (r < 0) | |
6307 | return r; | |
6308 | ||
6309 | arg_split = r; | |
6310 | break; | |
6311 | ||
81d1098b DDM |
6312 | case ARG_INCLUDE_PARTITIONS: |
6313 | if (arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE) | |
6314 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6315 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
6316 | ||
220780db | 6317 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
6318 | if (r < 0) |
6319 | return r; | |
6320 | ||
6321 | arg_filter_partitions_type = FILTER_PARTITIONS_INCLUDE; | |
6322 | ||
6323 | break; | |
6324 | ||
6325 | case ARG_EXCLUDE_PARTITIONS: | |
6326 | if (arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE) | |
6327 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6328 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
6329 | ||
220780db | 6330 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
6331 | if (r < 0) |
6332 | return r; | |
6333 | ||
6334 | arg_filter_partitions_type = FILTER_PARTITIONS_EXCLUDE; | |
6335 | ||
6336 | break; | |
6337 | ||
8275334b DDM |
6338 | case ARG_DEFER_PARTITIONS: |
6339 | r = parse_partition_types(optarg, &arg_defer_partitions, &arg_n_defer_partitions); | |
7d505753 DDM |
6340 | if (r < 0) |
6341 | return r; | |
6342 | ||
6343 | break; | |
6344 | ||
e1878ef7 DDM |
6345 | case ARG_SECTOR_SIZE: |
6346 | r = parse_sector_size(optarg, &arg_sector_size); | |
6347 | if (r < 0) | |
6348 | return r; | |
6349 | ||
6350 | break; | |
6351 | ||
9786dfe6 DDM |
6352 | case ARG_ARCHITECTURE: |
6353 | r = architecture_from_string(optarg); | |
6354 | if (r < 0) | |
6355 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid architecture '%s'", optarg); | |
6356 | ||
6357 | arg_architecture = r; | |
6358 | break; | |
6359 | ||
fc10b158 DDM |
6360 | case ARG_OFFLINE: |
6361 | if (streq(optarg, "auto")) | |
6362 | arg_offline = -1; | |
6363 | else { | |
6364 | r = parse_boolean_argument("--offline=", optarg, NULL); | |
6365 | if (r < 0) | |
6366 | return r; | |
6367 | ||
6368 | arg_offline = r; | |
6369 | } | |
6370 | ||
6371 | break; | |
6372 | ||
e594a3b1 LP |
6373 | case '?': |
6374 | return -EINVAL; | |
6375 | ||
6376 | default: | |
04499a70 | 6377 | assert_not_reached(); |
e594a3b1 LP |
6378 | } |
6379 | ||
6380 | if (argc - optind > 1) | |
6381 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6382 | "Expected at most one argument, the path to the block device."); | |
6383 | ||
a26f4a49 | 6384 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 6385 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 6386 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
6387 | |
6388 | if (arg_can_factory_reset) | |
a26f4a49 LP |
6389 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
6390 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
6391 | * open things strictly read-only. */ | |
6392 | else if (dry_run >= 0) | |
6393 | arg_dry_run = dry_run; | |
6394 | ||
170c9823 | 6395 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
6396 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6397 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 6398 | |
252d6267 LP |
6399 | if (arg_image && arg_root) |
6400 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
6401 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
6402 | |
6403 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
6404 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
6405 | * is vendor-supplied but the root fs formatted on first boot. */ | |
6406 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
6407 | if (r <= 0) { | |
6408 | if (r < 0 && r != -ENOENT) | |
6409 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
6410 | ||
6411 | arg_root = strdup("/sysroot"); | |
6412 | } else | |
6413 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
6414 | if (!arg_root) |
6415 | return log_oom(); | |
6416 | } | |
6417 | ||
e594a3b1 | 6418 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 6419 | |
252d6267 | 6420 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
6421 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6422 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
6423 | ||
4cee8333 DDM |
6424 | if (arg_split && !arg_node) |
6425 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6426 | "A path to a loopback file must be specified when --split is used."); | |
6427 | ||
889914ef LP |
6428 | if (arg_tpm2_pcr_mask == UINT32_MAX) |
6429 | arg_tpm2_pcr_mask = TPM2_PCR_MASK_DEFAULT; | |
02ef97cd LP |
6430 | if (arg_tpm2_public_key_pcr_mask == UINT32_MAX) |
6431 | arg_tpm2_public_key_pcr_mask = UINT32_C(1) << TPM_PCR_INDEX_KERNEL_IMAGE; | |
889914ef | 6432 | |
a26d463d DDM |
6433 | if (arg_pretty < 0 && isatty(STDOUT_FILENO)) |
6434 | arg_pretty = true; | |
6435 | ||
9786dfe6 DDM |
6436 | if (arg_architecture >= 0) { |
6437 | FOREACH_ARRAY(p, arg_filter_partitions, arg_n_filter_partitions) | |
6438 | *p = gpt_partition_type_override_architecture(*p, arg_architecture); | |
6439 | ||
6440 | FOREACH_ARRAY(p, arg_defer_partitions, arg_n_defer_partitions) | |
6441 | *p = gpt_partition_type_override_architecture(*p, arg_architecture); | |
6442 | } | |
6443 | ||
e594a3b1 LP |
6444 | return 1; |
6445 | } | |
6446 | ||
6447 | static int parse_proc_cmdline_factory_reset(void) { | |
6448 | bool b; | |
6449 | int r; | |
6450 | ||
6451 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
6452 | return 0; | |
6453 | ||
6454 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
6455 | return 0; | |
6456 | ||
6457 | r = proc_cmdline_get_bool("systemd.factory_reset", &b); | |
6458 | if (r < 0) | |
6459 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
6460 | if (r > 0) { | |
6461 | arg_factory_reset = b; | |
6462 | ||
6463 | if (b) | |
6464 | log_notice("Honouring factory reset requested via kernel command line."); | |
6465 | } | |
6466 | ||
6467 | return 0; | |
6468 | } | |
6469 | ||
6470 | static int parse_efi_variable_factory_reset(void) { | |
6471 | _cleanup_free_ char *value = NULL; | |
6472 | int r; | |
6473 | ||
6474 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
6475 | return 0; | |
6476 | ||
6477 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
6478 | return 0; | |
6479 | ||
e6f055cb | 6480 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
e594a3b1 LP |
6481 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
6482 | return 0; | |
6483 | if (r < 0) | |
6484 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); | |
6485 | ||
6486 | r = parse_boolean(value); | |
6487 | if (r < 0) | |
6488 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
6489 | ||
6490 | arg_factory_reset = r; | |
6491 | if (r) | |
111a3aae | 6492 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
6493 | |
6494 | return 0; | |
6495 | } | |
6496 | ||
6497 | static int remove_efi_variable_factory_reset(void) { | |
6498 | int r; | |
6499 | ||
e6f055cb | 6500 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
e594a3b1 LP |
6501 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
6502 | return 0; | |
6503 | if (r < 0) | |
6504 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); | |
6505 | ||
6506 | log_info("Successfully unset EFI variable FactoryReset."); | |
6507 | return 0; | |
6508 | } | |
6509 | ||
252d6267 LP |
6510 | static int acquire_root_devno( |
6511 | const char *p, | |
6512 | const char *root, | |
6513 | int mode, | |
6514 | char **ret, | |
6515 | int *ret_fd) { | |
6516 | ||
37734dc6 | 6517 | _cleanup_free_ char *found_path = NULL, *node = NULL; |
252d6267 | 6518 | dev_t devno, fd_devno = MODE_INVALID; |
254d1313 | 6519 | _cleanup_close_ int fd = -EBADF; |
e594a3b1 | 6520 | struct stat st; |
e594a3b1 LP |
6521 | int r; |
6522 | ||
a26f4a49 LP |
6523 | assert(p); |
6524 | assert(ret); | |
6525 | assert(ret_fd); | |
6526 | ||
f461a28d | 6527 | fd = chase_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 6528 | if (fd < 0) |
252d6267 | 6529 | return fd; |
e594a3b1 LP |
6530 | |
6531 | if (fstat(fd, &st) < 0) | |
6532 | return -errno; | |
6533 | ||
6534 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 6535 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 6536 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
6537 | return 0; |
6538 | } | |
6539 | ||
252d6267 LP |
6540 | if (S_ISBLK(st.st_mode)) { |
6541 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 6542 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
6543 | if (root) |
6544 | return -EPERM; | |
6545 | ||
a26f4a49 | 6546 | fd_devno = devno = st.st_rdev; |
252d6267 | 6547 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
6548 | |
6549 | devno = st.st_dev; | |
a26f4a49 | 6550 | if (major(devno) == 0) { |
e594a3b1 LP |
6551 | r = btrfs_get_block_device_fd(fd, &devno); |
6552 | if (r == -ENOTTY) /* not btrfs */ | |
6553 | return -ENODEV; | |
6554 | if (r < 0) | |
6555 | return r; | |
6556 | } | |
e594a3b1 LP |
6557 | } else |
6558 | return -ENOTBLK; | |
6559 | ||
6560 | /* From dm-crypt to backing partition */ | |
6561 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
6562 | if (r == -ENOENT) |
6563 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
6564 | else if (r < 0) | |
e594a3b1 LP |
6565 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
6566 | ||
6567 | /* From partition to whole disk containing it */ | |
6568 | r = block_get_whole_disk(devno, &devno); | |
6569 | if (r < 0) | |
162392b7 | 6570 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 6571 | |
37734dc6 | 6572 | r = devname_from_devnum(S_IFBLK, devno, &node); |
a26f4a49 LP |
6573 | if (r < 0) |
6574 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
6575 | ||
6bbae9f8 | 6576 | /* Only if we still look at the same block device we can reuse the fd. Otherwise return an |
a26f4a49 | 6577 | * invalidated fd. */ |
37734dc6 YW |
6578 | if (fd_devno != MODE_INVALID && fd_devno == devno) { |
6579 | /* Tell udev not to interfere while we are processing the device */ | |
6580 | if (flock(fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
6581 | return log_error_errno(errno, "Failed to lock device '%s': %m", node); | |
6582 | ||
6583 | *ret_fd = TAKE_FD(fd); | |
6584 | } else | |
6585 | *ret_fd = -EBADF; | |
6586 | ||
6587 | *ret = TAKE_PTR(node); | |
a26f4a49 | 6588 | return 0; |
e594a3b1 LP |
6589 | } |
6590 | ||
cc751c75 | 6591 | static int find_root(Context *context) { |
54632d2e | 6592 | _cleanup_free_ char *device = NULL; |
5980d463 | 6593 | int r; |
e594a3b1 | 6594 | |
cc751c75 | 6595 | assert(context); |
a26f4a49 | 6596 | |
e594a3b1 | 6597 | if (arg_node) { |
a26f4a49 | 6598 | if (arg_empty == EMPTY_CREATE) { |
254d1313 | 6599 | _cleanup_close_ int fd = -EBADF; |
a26f4a49 LP |
6600 | _cleanup_free_ char *s = NULL; |
6601 | ||
6602 | s = strdup(arg_node); | |
6603 | if (!s) | |
6604 | return log_oom(); | |
6605 | ||
5332d7c6 | 6606 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
6607 | if (fd < 0) |
6608 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
6609 | ||
cc751c75 | 6610 | context->node = TAKE_PTR(s); |
db1d4e6b | 6611 | context->node_is_our_file = true; |
cc751c75 | 6612 | context->backing_fd = TAKE_FD(fd); |
a26f4a49 LP |
6613 | return 0; |
6614 | } | |
6615 | ||
252d6267 LP |
6616 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
6617 | * we'll take it relative to the host, not the image */ | |
cc751c75 | 6618 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
67f0ac8c LP |
6619 | if (r == -EUCLEAN) |
6620 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 6621 | if (r < 0) |
aa2a74ad | 6622 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
6623 | |
6624 | return 0; | |
6625 | } | |
6626 | ||
a26f4a49 LP |
6627 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
6628 | ||
54632d2e KK |
6629 | /* If the root mount has been replaced by some form of volatile file system (overlayfs), the |
6630 | * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that | |
6631 | * here. */ | |
6632 | r = readlink_malloc("/run/systemd/volatile-root", &device); | |
6633 | if (r == -ENOENT) { /* volatile-root not found */ | |
6634 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The | |
6635 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
6636 | * (think: volatile setups) */ | |
e594a3b1 | 6637 | |
54632d2e | 6638 | FOREACH_STRING(p, "/", "/usr") { |
e594a3b1 | 6639 | |
cc751c75 DDM |
6640 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, &context->node, |
6641 | &context->backing_fd); | |
54632d2e KK |
6642 | if (r < 0) { |
6643 | if (r == -EUCLEAN) | |
6644 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
6645 | if (r != -ENODEV) | |
6646 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
6647 | } else | |
6648 | return 0; | |
6649 | } | |
6650 | } else if (r < 0) | |
6651 | return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m"); | |
6652 | else { | |
cc751c75 | 6653 | r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
54632d2e KK |
6654 | if (r == -EUCLEAN) |
6655 | return btrfs_log_dev_root(LOG_ERR, r, device); | |
6656 | if (r < 0) | |
6657 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device); | |
6658 | ||
6659 | return 0; | |
e594a3b1 LP |
6660 | } |
6661 | ||
6662 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
6663 | } | |
6664 | ||
81dde3d8 | 6665 | static int resize_pt(int fd, uint64_t sector_size) { |
f9b3afae LP |
6666 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
6667 | int r; | |
6668 | ||
6669 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
6670 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
6671 | * immediately write it again, with no changes. */ | |
6672 | ||
81dde3d8 | 6673 | r = fdisk_new_context_fd(fd, /* read_only= */ false, sector_size, &c); |
f9b3afae | 6674 | if (r < 0) |
ddb6eeaf | 6675 | return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6676 | |
6677 | r = fdisk_has_label(c); | |
6678 | if (r < 0) | |
ddb6eeaf | 6679 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6680 | if (r == 0) { |
6681 | log_debug("Not resizing partition table, as there currently is none."); | |
6682 | return 0; | |
6683 | } | |
6684 | ||
6685 | r = fdisk_write_disklabel(c); | |
6686 | if (r < 0) | |
6687 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
6688 | ||
6689 | log_info("Resized partition table."); | |
6690 | return 1; | |
6691 | } | |
6692 | ||
252d6267 LP |
6693 | static int resize_backing_fd( |
6694 | const char *node, /* The primary way we access the disk image to operate on */ | |
6695 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
6696 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
81dde3d8 LP |
6697 | LoopDevice *loop_device, |
6698 | uint64_t sector_size) { | |
252d6267 | 6699 | |
254d1313 | 6700 | _cleanup_close_ int writable_fd = -EBADF; |
252d6267 | 6701 | uint64_t current_size; |
a26f4a49 LP |
6702 | struct stat st; |
6703 | int r; | |
6704 | ||
6705 | assert(node); | |
6706 | assert(fd); | |
6707 | ||
6708 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
6709 | return 0; | |
6710 | ||
6711 | if (*fd < 0) { | |
6712 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
6713 | * keep a reference to the file we can pass around. */ | |
6714 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
6715 | if (*fd < 0) | |
6716 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
6717 | } | |
6718 | ||
6719 | if (fstat(*fd, &st) < 0) | |
6720 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
6721 | ||
252d6267 LP |
6722 | if (S_ISBLK(st.st_mode)) { |
6723 | if (!backing_file) | |
6724 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
6725 | ||
6726 | assert(loop_device); | |
a26f4a49 | 6727 | |
252d6267 LP |
6728 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
6729 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
6730 | } else { | |
6731 | r = stat_verify_regular(&st); | |
6732 | if (r < 0) | |
6733 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
6734 | ||
6735 | assert(!backing_file); | |
6736 | assert(!loop_device); | |
6737 | current_size = st.st_size; | |
6738 | } | |
6739 | ||
252d6267 | 6740 | if (current_size >= arg_size) { |
2b59bf51 ZJS |
6741 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", |
6742 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 LP |
6743 | return 0; |
6744 | } | |
6745 | ||
252d6267 LP |
6746 | if (S_ISBLK(st.st_mode)) { |
6747 | assert(backing_file); | |
6748 | ||
6749 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
6750 | * backing file, hence let's do that. */ | |
6751 | ||
6752 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
6753 | if (writable_fd < 0) | |
6754 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
6755 | ||
6756 | if (fstat(writable_fd, &st) < 0) | |
6757 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
6758 | ||
6759 | r = stat_verify_regular(&st); | |
6760 | if (r < 0) | |
6761 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
6762 | ||
6763 | if ((uint64_t) st.st_size != current_size) | |
6764 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2b59bf51 ZJS |
6765 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", |
6766 | node, backing_file); | |
252d6267 LP |
6767 | } else { |
6768 | assert(S_ISREG(st.st_mode)); | |
6769 | assert(!backing_file); | |
a26f4a49 | 6770 | |
252d6267 LP |
6771 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
6772 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
6773 | * as fdisk can't accept it anyway. */ | |
6774 | ||
6775 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
6776 | if (writable_fd < 0) | |
6777 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
6778 | } | |
a26f4a49 LP |
6779 | |
6780 | if (!arg_discard) { | |
6781 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
6782 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
6783 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
2b59bf51 | 6784 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 LP |
6785 | |
6786 | /* Fallback to truncation, if fallocate() is not supported. */ | |
6787 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
6788 | } else { | |
252d6267 | 6789 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6790 | log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node); |
a26f4a49 | 6791 | else |
2b59bf51 ZJS |
6792 | log_info("File '%s' grown from %s to %s by allocation.", |
6793 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 | 6794 | |
252d6267 | 6795 | goto done; |
a26f4a49 LP |
6796 | } |
6797 | } | |
6798 | ||
6799 | if (ftruncate(writable_fd, arg_size) < 0) | |
6800 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
2b59bf51 | 6801 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 | 6802 | |
252d6267 | 6803 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6804 | log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size)); |
252d6267 | 6805 | else |
2b59bf51 ZJS |
6806 | log_info("File '%s' grown from %s to %s by truncation.", |
6807 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
252d6267 LP |
6808 | |
6809 | done: | |
81dde3d8 | 6810 | r = resize_pt(writable_fd, sector_size); |
f9b3afae LP |
6811 | if (r < 0) |
6812 | return r; | |
6813 | ||
252d6267 LP |
6814 | if (loop_device) { |
6815 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
6816 | if (r < 0) | |
6817 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
6818 | } | |
a26f4a49 LP |
6819 | |
6820 | return 1; | |
6821 | } | |
6822 | ||
170c9823 | 6823 | static int determine_auto_size(Context *c) { |
994b3031 | 6824 | uint64_t sum; |
170c9823 | 6825 | |
ac33e147 | 6826 | assert(c); |
170c9823 | 6827 | |
994b3031 LP |
6828 | sum = round_up_size(GPT_METADATA_SIZE, 4096); |
6829 | ||
170c9823 LP |
6830 | LIST_FOREACH(partitions, p, c->partitions) { |
6831 | uint64_t m; | |
6832 | ||
6833 | if (p->dropped) | |
6834 | continue; | |
6835 | ||
994b3031 | 6836 | m = partition_min_size_with_padding(c, p); |
170c9823 LP |
6837 | if (m > UINT64_MAX - sum) |
6838 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
6839 | ||
6840 | sum += m; | |
6841 | } | |
6842 | ||
2b59bf51 ZJS |
6843 | if (c->total != UINT64_MAX) |
6844 | /* Image already allocated? Then show its size. */ | |
6845 | log_info("Automatically determined minimal disk image size as %s, current image size is %s.", | |
6846 | FORMAT_BYTES(sum), FORMAT_BYTES(c->total)); | |
6847 | else | |
6848 | /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */ | |
6849 | log_info("Automatically determined minimal disk image size as %s.", | |
6850 | FORMAT_BYTES(sum)); | |
170c9823 LP |
6851 | |
6852 | arg_size = sum; | |
6853 | return 0; | |
6854 | } | |
6855 | ||
e594a3b1 | 6856 | static int run(int argc, char *argv[]) { |
252d6267 | 6857 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
a4b3e942 | 6858 | _cleanup_(umount_and_freep) char *mounted_dir = NULL; |
e594a3b1 | 6859 | _cleanup_(context_freep) Context* context = NULL; |
cc751c75 | 6860 | bool node_is_our_loop = false; |
e594a3b1 LP |
6861 | int r; |
6862 | ||
6863 | log_show_color(true); | |
6864 | log_parse_environment(); | |
6865 | log_open(); | |
6866 | ||
e594a3b1 LP |
6867 | r = parse_argv(argc, argv); |
6868 | if (r <= 0) | |
6869 | return r; | |
6870 | ||
6871 | r = parse_proc_cmdline_factory_reset(); | |
6872 | if (r < 0) | |
6873 | return r; | |
6874 | ||
6875 | r = parse_efi_variable_factory_reset(); | |
6876 | if (r < 0) | |
6877 | return r; | |
6878 | ||
30f19400 LP |
6879 | #if HAVE_LIBCRYPTSETUP |
6880 | cryptsetup_enable_logging(NULL); | |
6881 | #endif | |
6882 | ||
252d6267 LP |
6883 | if (arg_image) { |
6884 | assert(!arg_root); | |
6885 | ||
6886 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
6887 | * systems */ | |
6888 | r = mount_image_privately_interactively( | |
6889 | arg_image, | |
84be0c71 | 6890 | arg_image_policy, |
252d6267 LP |
6891 | DISSECT_IMAGE_MOUNT_READ_ONLY | |
6892 | (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) */ | |
6893 | DISSECT_IMAGE_GPT_ONLY | | |
6894 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
6895 | DISSECT_IMAGE_USR_NO_ROOT | | |
6896 | DISSECT_IMAGE_REQUIRE_ROOT, | |
6897 | &mounted_dir, | |
a133d2c3 | 6898 | /* ret_dir_fd= */ NULL, |
e330f97a | 6899 | &loop_device); |
252d6267 LP |
6900 | if (r < 0) |
6901 | return r; | |
6902 | ||
6903 | arg_root = strdup(mounted_dir); | |
6904 | if (!arg_root) | |
6905 | return log_oom(); | |
6906 | ||
6907 | if (!arg_node) { | |
6908 | arg_node = strdup(loop_device->node); | |
6909 | if (!arg_node) | |
6910 | return log_oom(); | |
6911 | ||
3d62af7d | 6912 | /* Remember that the device we are about to manipulate is actually the one we |
252d6267 LP |
6913 | * allocated here, and thus to increase its backing file we know what to do */ |
6914 | node_is_our_loop = true; | |
6915 | } | |
6916 | } | |
6917 | ||
e594a3b1 LP |
6918 | context = context_new(arg_seed); |
6919 | if (!context) | |
6920 | return log_oom(); | |
6921 | ||
224c853f RP |
6922 | strv_uniq(arg_definitions); |
6923 | ||
4b047310 | 6924 | r = context_read_definitions(context); |
e594a3b1 LP |
6925 | if (r < 0) |
6926 | return r; | |
6927 | ||
cc751c75 | 6928 | r = find_root(context); |
0ae5ffe0 YW |
6929 | if (r < 0) |
6930 | return r; | |
6931 | ||
a26f4a49 | 6932 | if (arg_size != UINT64_MAX) { |
252d6267 | 6933 | r = resize_backing_fd( |
cc751c75 DDM |
6934 | context->node, |
6935 | &context->backing_fd, | |
252d6267 | 6936 | node_is_our_loop ? arg_image : NULL, |
81dde3d8 LP |
6937 | node_is_our_loop ? loop_device : NULL, |
6938 | context->sector_size); | |
a26f4a49 LP |
6939 | if (r < 0) |
6940 | return r; | |
6941 | } | |
6942 | ||
cc751c75 | 6943 | r = context_load_partition_table(context); |
e594a3b1 LP |
6944 | if (r == -EHWPOISON) |
6945 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
6946 | * really an error when called at boot. */ | |
6947 | if (r < 0) | |
6948 | return r; | |
cc751c75 | 6949 | context->from_scratch = r > 0; /* Starting from scratch */ |
e594a3b1 LP |
6950 | |
6951 | if (arg_can_factory_reset) { | |
6952 | r = context_can_factory_reset(context); | |
6953 | if (r < 0) | |
6954 | return r; | |
6955 | if (r == 0) | |
6956 | return EXIT_FAILURE; | |
6957 | ||
6958 | return 0; | |
6959 | } | |
6960 | ||
cc751c75 | 6961 | r = context_factory_reset(context); |
e594a3b1 LP |
6962 | if (r < 0) |
6963 | return r; | |
6964 | if (r > 0) { | |
6965 | /* We actually did a factory reset! */ | |
6966 | r = remove_efi_variable_factory_reset(); | |
6967 | if (r < 0) | |
6968 | return r; | |
6969 | ||
6970 | /* Reload the reduced partition table */ | |
6971 | context_unload_partition_table(context); | |
cc751c75 | 6972 | r = context_load_partition_table(context); |
e594a3b1 LP |
6973 | if (r < 0) |
6974 | return r; | |
6975 | } | |
6976 | ||
e594a3b1 LP |
6977 | r = context_read_seed(context, arg_root); |
6978 | if (r < 0) | |
6979 | return r; | |
6980 | ||
8bbbdfd7 DDM |
6981 | /* Make sure each partition has a unique UUID and unique label */ |
6982 | r = context_acquire_partition_uuids_and_labels(context); | |
6983 | if (r < 0) | |
6984 | return r; | |
6985 | ||
757bc2e4 | 6986 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
6987 | r = context_open_copy_block_paths( |
6988 | context, | |
7802194a | 6989 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
6990 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
6991 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
6992 | if (r < 0) |
6993 | return r; | |
6994 | ||
5eef7047 DDM |
6995 | r = context_minimize(context); |
6996 | if (r < 0) | |
6997 | return r; | |
6998 | ||
6999 | /* We might have gotten more copy blocks paths to open during the minimize process, so let's make | |
7000 | * sure we open those as well. These should all be regular files, so don't allow any block devices. */ | |
7001 | r = context_open_copy_block_paths(context, 0); | |
7002 | if (r < 0) | |
7003 | return r; | |
7004 | ||
170c9823 LP |
7005 | if (arg_size_auto) { |
7006 | r = determine_auto_size(context); | |
7007 | if (r < 0) | |
7008 | return r; | |
7009 | ||
7010 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
7011 | context_unload_partition_table(context); | |
7012 | ||
ac33e147 | 7013 | assert(arg_size != UINT64_MAX); |
252d6267 | 7014 | r = resize_backing_fd( |
cc751c75 DDM |
7015 | context->node, |
7016 | &context->backing_fd, | |
252d6267 | 7017 | node_is_our_loop ? arg_image : NULL, |
81dde3d8 LP |
7018 | node_is_our_loop ? loop_device : NULL, |
7019 | context->sector_size); | |
170c9823 LP |
7020 | if (r < 0) |
7021 | return r; | |
7022 | ||
cc751c75 | 7023 | r = context_load_partition_table(context); |
170c9823 LP |
7024 | if (r < 0) |
7025 | return r; | |
7026 | } | |
7027 | ||
e594a3b1 LP |
7028 | /* First try to fit new partitions in, dropping by priority until it fits */ |
7029 | for (;;) { | |
14a4c4ed LP |
7030 | uint64_t largest_free_area; |
7031 | ||
7032 | if (context_allocate_partitions(context, &largest_free_area)) | |
e594a3b1 LP |
7033 | break; /* Success! */ |
7034 | ||
9ccceb9d | 7035 | if (!context_drop_or_foreignize_one_priority(context)) { |
d17db7b2 | 7036 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), |
14a4c4ed | 7037 | "Can't fit requested partitions into available free space (%s), refusing.", |
2b59bf51 | 7038 | FORMAT_BYTES(largest_free_area)); |
d17db7b2 LP |
7039 | determine_auto_size(context); |
7040 | return r; | |
7041 | } | |
e594a3b1 LP |
7042 | } |
7043 | ||
7044 | /* Now assign free space according to the weight logic */ | |
7045 | r = context_grow_partitions(context); | |
7046 | if (r < 0) | |
7047 | return r; | |
7048 | ||
0b7f574f | 7049 | /* Now calculate where each new partition gets placed */ |
e594a3b1 LP |
7050 | context_place_partitions(context); |
7051 | ||
cc751c75 | 7052 | (void) context_dump(context, /*late=*/ false); |
a26d463d | 7053 | |
cc751c75 | 7054 | r = context_write_partition_table(context); |
e594a3b1 LP |
7055 | if (r < 0) |
7056 | return r; | |
7057 | ||
4cee8333 DDM |
7058 | r = context_split(context); |
7059 | if (r < 0) | |
7060 | return r; | |
7061 | ||
cc751c75 | 7062 | (void) context_dump(context, /*late=*/ true); |
b5b7879a | 7063 | |
db1d4e6b DDM |
7064 | context->node = mfree(context->node); |
7065 | ||
a2d7c42e DDM |
7066 | LIST_FOREACH(partitions, p, context->partitions) |
7067 | p->split_path = mfree(p->split_path); | |
b5b7879a | 7068 | |
e594a3b1 LP |
7069 | return 0; |
7070 | } | |
7071 | ||
7072 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |