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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
e594a3b1 LP |
2 | |
3 | #if HAVE_VALGRIND_MEMCHECK_H | |
4 | #include <valgrind/memcheck.h> | |
5 | #endif | |
6 | ||
7 | #include <fcntl.h> | |
8 | #include <getopt.h> | |
e594a3b1 LP |
9 | #include <linux/fs.h> |
10 | #include <linux/loop.h> | |
11 | #include <sys/file.h> | |
12 | #include <sys/ioctl.h> | |
13 | #include <sys/stat.h> | |
14 | ||
1a037ba2 | 15 | #include "sd-device.h" |
e594a3b1 LP |
16 | #include "sd-id128.h" |
17 | ||
18 | #include "alloc-util.h" | |
19 | #include "blkid-util.h" | |
20 | #include "blockdev-util.h" | |
21 | #include "btrfs-util.h" | |
d6b4d1c7 | 22 | #include "build.h" |
f4351959 | 23 | #include "chase-symlinks.h" |
e594a3b1 LP |
24 | #include "conf-files.h" |
25 | #include "conf-parser.h" | |
28db6fbf | 26 | #include "constants.h" |
1e2f3230 | 27 | #include "cryptsetup-util.h" |
ca822829 | 28 | #include "device-util.h" |
7176f06c | 29 | #include "devnum-util.h" |
5c08da58 | 30 | #include "dirent-util.h" |
e594a3b1 LP |
31 | #include "efivars.h" |
32 | #include "errno-util.h" | |
33 | #include "fd-util.h" | |
4dc07c3a | 34 | #include "fdisk-util.h" |
b9df3536 | 35 | #include "fileio.h" |
e594a3b1 LP |
36 | #include "format-table.h" |
37 | #include "format-util.h" | |
38 | #include "fs-util.h" | |
d8e32c47 | 39 | #include "glyph-util.h" |
e594a3b1 | 40 | #include "gpt.h" |
889914ef | 41 | #include "hexdecoct.h" |
ade99252 | 42 | #include "hmac.h" |
e594a3b1 | 43 | #include "id128-util.h" |
baa6a42d | 44 | #include "initrd-util.h" |
b456191d | 45 | #include "io-util.h" |
a015fbe7 | 46 | #include "json.h" |
e594a3b1 | 47 | #include "list.h" |
53171c04 | 48 | #include "loop-util.h" |
e594a3b1 | 49 | #include "main-func.h" |
8a794850 | 50 | #include "mkdir.h" |
53171c04 | 51 | #include "mkfs-util.h" |
8a794850 | 52 | #include "mount-util.h" |
5c08da58 | 53 | #include "mountpoint-util.h" |
c0fad2d9 | 54 | #include "nulstr-util.h" |
b456191d | 55 | #include "openssl-util.h" |
614b022c | 56 | #include "parse-argument.h" |
c3eaba2d | 57 | #include "parse-helpers.h" |
e594a3b1 LP |
58 | #include "pretty-print.h" |
59 | #include "proc-cmdline.h" | |
8a794850 | 60 | #include "process-util.h" |
b9df3536 | 61 | #include "random-util.h" |
170c9823 | 62 | #include "resize-fs.h" |
95bfd3cd | 63 | #include "rm-rf.h" |
e594a3b1 | 64 | #include "sort-util.h" |
e031166e | 65 | #include "specifier.h" |
e594a3b1 | 66 | #include "stdio-util.h" |
889914ef | 67 | #include "string-table.h" |
e594a3b1 LP |
68 | #include "string-util.h" |
69 | #include "strv.h" | |
bf819d3a | 70 | #include "sync-util.h" |
95bfd3cd | 71 | #include "tmpfile-util.h" |
e594a3b1 | 72 | #include "terminal-util.h" |
02ef97cd | 73 | #include "tpm-pcr.h" |
889914ef | 74 | #include "tpm2-util.h" |
8a794850 | 75 | #include "user-util.h" |
e594a3b1 LP |
76 | #include "utf8.h" |
77 | ||
fb08381c | 78 | /* If not configured otherwise use a minimal partition size of 10M */ |
b262cbe8 | 79 | #define DEFAULT_MIN_SIZE (10ULL*1024ULL*1024ULL) |
fb08381c LP |
80 | |
81 | /* Hard lower limit for new partition sizes */ | |
b262cbe8 | 82 | #define HARD_MIN_SIZE 4096ULL |
fb08381c | 83 | |
b456191d | 84 | /* We know up front we're never going to put more than this in a verity sig partition. */ |
b262cbe8 | 85 | #define VERITY_SIG_SIZE (HARD_MIN_SIZE*4ULL) |
b456191d | 86 | |
69e3234d | 87 | /* libfdisk takes off slightly more than 1M of the disk size when creating a GPT disk label */ |
b262cbe8 | 88 | #define GPT_METADATA_SIZE (1044ULL*1024ULL) |
170c9823 LP |
89 | |
90 | /* LUKS2 takes off 16M of the partition size with its metadata by default */ | |
b262cbe8 | 91 | #define LUKS2_METADATA_SIZE (16ULL*1024ULL*1024ULL) |
170c9823 | 92 | |
48a09a8f DDM |
93 | /* To do LUKS2 offline encryption, we need to keep some extra free space at the end of the partition. */ |
94 | #define LUKS2_METADATA_KEEP_FREE (LUKS2_METADATA_SIZE*2ULL) | |
95 | ||
98e0456e DDM |
96 | /* LUKS2 volume key size. */ |
97 | #define VOLUME_KEY_SIZE (512ULL/8ULL) | |
98 | ||
e594a3b1 LP |
99 | /* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks |
100 | * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B | |
101 | * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll | |
102 | * waste 3K per partition, which is probably fine. */ | |
103 | ||
104 | static enum { | |
105 | EMPTY_REFUSE, /* refuse empty disks, never create a partition table */ | |
106 | EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */ | |
107 | EMPTY_REQUIRE, /* require an empty disk, create a partition table */ | |
108 | EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */ | |
a26f4a49 | 109 | EMPTY_CREATE, /* create disk as loopback file, create a partition table always */ |
e594a3b1 LP |
110 | } arg_empty = EMPTY_REFUSE; |
111 | ||
53538e33 | 112 | typedef enum FilterPartitionType { |
81d1098b DDM |
113 | FILTER_PARTITIONS_NONE, |
114 | FILTER_PARTITIONS_EXCLUDE, | |
115 | FILTER_PARTITIONS_INCLUDE, | |
116 | _FILTER_PARTITIONS_MAX, | |
117 | _FILTER_PARTITIONS_INVALID = -EINVAL, | |
118 | } FilterPartitionsType; | |
119 | ||
e594a3b1 LP |
120 | static bool arg_dry_run = true; |
121 | static const char *arg_node = NULL; | |
122 | static char *arg_root = NULL; | |
252d6267 | 123 | static char *arg_image = NULL; |
224c853f | 124 | static char **arg_definitions = NULL; |
e594a3b1 LP |
125 | static bool arg_discard = true; |
126 | static bool arg_can_factory_reset = false; | |
127 | static int arg_factory_reset = -1; | |
128 | static sd_id128_t arg_seed = SD_ID128_NULL; | |
129 | static bool arg_randomize = false; | |
130 | static int arg_pretty = -1; | |
a26f4a49 | 131 | static uint64_t arg_size = UINT64_MAX; |
170c9823 | 132 | static bool arg_size_auto = false; |
6a01ea4a | 133 | static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; |
896e678b LP |
134 | static PagerFlags arg_pager_flags = 0; |
135 | static bool arg_legend = true; | |
b9df3536 LP |
136 | static void *arg_key = NULL; |
137 | static size_t arg_key_size = 0; | |
b456191d DDM |
138 | static EVP_PKEY *arg_private_key = NULL; |
139 | static X509 *arg_certificate = NULL; | |
889914ef LP |
140 | static char *arg_tpm2_device = NULL; |
141 | static uint32_t arg_tpm2_pcr_mask = UINT32_MAX; | |
02ef97cd LP |
142 | static char *arg_tpm2_public_key = NULL; |
143 | static uint32_t arg_tpm2_public_key_pcr_mask = UINT32_MAX; | |
4cee8333 | 144 | static bool arg_split = false; |
81d1098b | 145 | static sd_id128_t *arg_filter_partitions = NULL; |
d989dd76 | 146 | static size_t arg_n_filter_partitions = 0; |
81d1098b | 147 | static FilterPartitionsType arg_filter_partitions_type = FILTER_PARTITIONS_NONE; |
8275334b DDM |
148 | static sd_id128_t *arg_defer_partitions = NULL; |
149 | static size_t arg_n_defer_partitions = 0; | |
e594a3b1 LP |
150 | |
151 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 152 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
224c853f | 153 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep); |
b9df3536 | 154 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
b456191d DDM |
155 | STATIC_DESTRUCTOR_REGISTER(arg_private_key, EVP_PKEY_freep); |
156 | STATIC_DESTRUCTOR_REGISTER(arg_certificate, X509_freep); | |
889914ef | 157 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
02ef97cd | 158 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep); |
81d1098b | 159 | STATIC_DESTRUCTOR_REGISTER(arg_filter_partitions, freep); |
e594a3b1 | 160 | |
e594a3b1 | 161 | typedef struct FreeArea FreeArea; |
e594a3b1 | 162 | |
889914ef LP |
163 | typedef enum EncryptMode { |
164 | ENCRYPT_OFF, | |
165 | ENCRYPT_KEY_FILE, | |
166 | ENCRYPT_TPM2, | |
167 | ENCRYPT_KEY_FILE_TPM2, | |
168 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 169 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
170 | } EncryptMode; |
171 | ||
b5b7879a DDM |
172 | typedef enum VerityMode { |
173 | VERITY_OFF, | |
174 | VERITY_DATA, | |
175 | VERITY_HASH, | |
b456191d | 176 | VERITY_SIG, |
b5b7879a DDM |
177 | _VERITY_MODE_MAX, |
178 | _VERITY_MODE_INVALID = -EINVAL, | |
179 | } VerityMode; | |
180 | ||
5c33b686 DDM |
181 | typedef enum MinimizeMode { |
182 | MINIMIZE_OFF, | |
183 | MINIMIZE_BEST, | |
184 | MINIMIZE_GUESS, | |
185 | _MINIMIZE_MODE_MAX, | |
186 | _MINIMIZE_MODE_INVALID = -EINVAL, | |
187 | } MinimizeMode; | |
188 | ||
448cfb7f | 189 | typedef struct Partition { |
e594a3b1 | 190 | char *definition_path; |
39fc0174 | 191 | char **drop_in_files; |
e594a3b1 | 192 | |
22e932f4 | 193 | GptPartitionType type; |
e594a3b1 | 194 | sd_id128_t current_uuid, new_uuid; |
11749b61 | 195 | bool new_uuid_is_set; |
e594a3b1 | 196 | char *current_label, *new_label; |
15cad3a2 | 197 | sd_id128_t fs_uuid, luks_uuid; |
e594a3b1 LP |
198 | |
199 | bool dropped; | |
200 | bool factory_reset; | |
201 | int32_t priority; | |
202 | ||
203 | uint32_t weight, padding_weight; | |
204 | ||
205 | uint64_t current_size, new_size; | |
206 | uint64_t size_min, size_max; | |
207 | ||
208 | uint64_t current_padding, new_padding; | |
209 | uint64_t padding_min, padding_max; | |
210 | ||
211 | uint64_t partno; | |
212 | uint64_t offset; | |
213 | ||
214 | struct fdisk_partition *current_partition; | |
215 | struct fdisk_partition *new_partition; | |
216 | FreeArea *padding_area; | |
217 | FreeArea *allocated_to_area; | |
218 | ||
757bc2e4 | 219 | char *copy_blocks_path; |
7d07030e | 220 | bool copy_blocks_path_is_our_file; |
5c08da58 | 221 | bool copy_blocks_auto; |
585c5c75 | 222 | const char *copy_blocks_root; |
757bc2e4 LP |
223 | int copy_blocks_fd; |
224 | uint64_t copy_blocks_size; | |
225 | ||
53171c04 | 226 | char *format; |
8a794850 | 227 | char **copy_files; |
d83d8048 | 228 | char **make_directories; |
889914ef | 229 | EncryptMode encrypt; |
b5b7879a DDM |
230 | VerityMode verity; |
231 | char *verity_match_key; | |
5c33b686 | 232 | MinimizeMode minimize; |
53171c04 | 233 | |
e73309c5 | 234 | uint64_t gpt_flags; |
ff0771bf | 235 | int no_auto; |
e73309c5 | 236 | int read_only; |
1c41c1dc | 237 | int growfs; |
e73309c5 | 238 | |
b5b7879a DDM |
239 | uint8_t *roothash; |
240 | size_t roothash_size; | |
241 | ||
4cee8333 | 242 | char *split_name_format; |
62108348 | 243 | char *split_path; |
4cee8333 | 244 | |
448cfb7f | 245 | struct Partition *siblings[_VERITY_MODE_MAX]; |
b5b7879a | 246 | |
448cfb7f DDM |
247 | LIST_FIELDS(struct Partition, partitions); |
248 | } Partition; | |
e594a3b1 LP |
249 | |
250 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
251 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
252 | ||
253 | struct FreeArea { | |
254 | Partition *after; | |
255 | uint64_t size; | |
256 | uint64_t allocated; | |
257 | }; | |
258 | ||
448cfb7f | 259 | typedef struct Context { |
e594a3b1 LP |
260 | LIST_HEAD(Partition, partitions); |
261 | size_t n_partitions; | |
262 | ||
263 | FreeArea **free_areas; | |
319a4f4b | 264 | size_t n_free_areas; |
e594a3b1 LP |
265 | |
266 | uint64_t start, end, total; | |
267 | ||
268 | struct fdisk_context *fdisk_context; | |
994b3031 LP |
269 | uint64_t sector_size; |
270 | uint64_t grain_size; | |
e594a3b1 LP |
271 | |
272 | sd_id128_t seed; | |
cc751c75 DDM |
273 | |
274 | char *node; | |
db1d4e6b | 275 | bool node_is_our_file; |
cc751c75 DDM |
276 | int backing_fd; |
277 | ||
278 | bool from_scratch; | |
448cfb7f | 279 | } Context; |
e594a3b1 | 280 | |
889914ef LP |
281 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
282 | [ENCRYPT_OFF] = "off", | |
283 | [ENCRYPT_KEY_FILE] = "key-file", | |
284 | [ENCRYPT_TPM2] = "tpm2", | |
285 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
286 | }; | |
287 | ||
b5b7879a DDM |
288 | static const char *verity_mode_table[_VERITY_MODE_MAX] = { |
289 | [VERITY_OFF] = "off", | |
290 | [VERITY_DATA] = "data", | |
291 | [VERITY_HASH] = "hash", | |
b456191d | 292 | [VERITY_SIG] = "signature", |
b5b7879a DDM |
293 | }; |
294 | ||
5c33b686 DDM |
295 | static const char *minimize_mode_table[_MINIMIZE_MODE_MAX] = { |
296 | [MINIMIZE_OFF] = "off", | |
297 | [MINIMIZE_BEST] = "best", | |
298 | [MINIMIZE_GUESS] = "guess", | |
299 | }; | |
300 | ||
2709d029 | 301 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); |
86bebe38 | 302 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode); |
5c33b686 | 303 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(minimize_mode, MinimizeMode, MINIMIZE_BEST); |
889914ef | 304 | |
e594a3b1 LP |
305 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
306 | return (v / p) * p; | |
307 | } | |
308 | ||
309 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
310 | ||
311 | v = DIV_ROUND_UP(v, p); | |
312 | ||
313 | if (v > UINT64_MAX / p) | |
314 | return UINT64_MAX; /* overflow */ | |
315 | ||
316 | return v * p; | |
317 | } | |
318 | ||
319 | static Partition *partition_new(void) { | |
320 | Partition *p; | |
321 | ||
322 | p = new(Partition, 1); | |
323 | if (!p) | |
324 | return NULL; | |
325 | ||
326 | *p = (Partition) { | |
327 | .weight = 1000, | |
328 | .padding_weight = 0, | |
329 | .current_size = UINT64_MAX, | |
330 | .new_size = UINT64_MAX, | |
331 | .size_min = UINT64_MAX, | |
332 | .size_max = UINT64_MAX, | |
333 | .current_padding = UINT64_MAX, | |
334 | .new_padding = UINT64_MAX, | |
335 | .padding_min = UINT64_MAX, | |
336 | .padding_max = UINT64_MAX, | |
337 | .partno = UINT64_MAX, | |
338 | .offset = UINT64_MAX, | |
254d1313 | 339 | .copy_blocks_fd = -EBADF, |
757bc2e4 | 340 | .copy_blocks_size = UINT64_MAX, |
ff0771bf | 341 | .no_auto = -1, |
e73309c5 | 342 | .read_only = -1, |
1c41c1dc | 343 | .growfs = -1, |
e594a3b1 LP |
344 | }; |
345 | ||
346 | return p; | |
347 | } | |
348 | ||
349 | static Partition* partition_free(Partition *p) { | |
350 | if (!p) | |
351 | return NULL; | |
352 | ||
353 | free(p->current_label); | |
354 | free(p->new_label); | |
355 | free(p->definition_path); | |
39fc0174 | 356 | strv_free(p->drop_in_files); |
e594a3b1 LP |
357 | |
358 | if (p->current_partition) | |
359 | fdisk_unref_partition(p->current_partition); | |
360 | if (p->new_partition) | |
361 | fdisk_unref_partition(p->new_partition); | |
362 | ||
7d07030e DDM |
363 | if (p->copy_blocks_path_is_our_file) |
364 | unlink_and_free(p->copy_blocks_path); | |
365 | else | |
366 | free(p->copy_blocks_path); | |
757bc2e4 LP |
367 | safe_close(p->copy_blocks_fd); |
368 | ||
53171c04 | 369 | free(p->format); |
8a794850 | 370 | strv_free(p->copy_files); |
d83d8048 | 371 | strv_free(p->make_directories); |
b5b7879a DDM |
372 | free(p->verity_match_key); |
373 | ||
374 | free(p->roothash); | |
53171c04 | 375 | |
4cee8333 | 376 | free(p->split_name_format); |
a2d7c42e | 377 | unlink_and_free(p->split_path); |
4cee8333 | 378 | |
e594a3b1 LP |
379 | return mfree(p); |
380 | } | |
381 | ||
9ccceb9d YW |
382 | static void partition_foreignize(Partition *p) { |
383 | assert(p); | |
384 | assert(PARTITION_EXISTS(p)); | |
385 | ||
386 | /* Reset several parameters set through definition file to make the partition foreign. */ | |
387 | ||
9ccceb9d YW |
388 | p->definition_path = mfree(p->definition_path); |
389 | p->drop_in_files = strv_free(p->drop_in_files); | |
390 | ||
391 | p->copy_blocks_path = mfree(p->copy_blocks_path); | |
392 | p->copy_blocks_fd = safe_close(p->copy_blocks_fd); | |
585c5c75 | 393 | p->copy_blocks_root = NULL; |
9ccceb9d YW |
394 | |
395 | p->format = mfree(p->format); | |
396 | p->copy_files = strv_free(p->copy_files); | |
397 | p->make_directories = strv_free(p->make_directories); | |
398 | p->verity_match_key = mfree(p->verity_match_key); | |
399 | ||
9ccceb9d YW |
400 | p->priority = 0; |
401 | p->weight = 1000; | |
402 | p->padding_weight = 0; | |
403 | p->size_min = UINT64_MAX; | |
404 | p->size_max = UINT64_MAX; | |
405 | p->padding_min = UINT64_MAX; | |
406 | p->padding_max = UINT64_MAX; | |
407 | p->no_auto = -1; | |
408 | p->read_only = -1; | |
409 | p->growfs = -1; | |
410 | p->verity = VERITY_OFF; | |
411 | } | |
412 | ||
7d505753 | 413 | static bool partition_exclude(const Partition *p) { |
81d1098b DDM |
414 | assert(p); |
415 | ||
416 | if (arg_filter_partitions_type == FILTER_PARTITIONS_NONE) | |
417 | return false; | |
418 | ||
d989dd76 | 419 | for (size_t i = 0; i < arg_n_filter_partitions; i++) |
81d1098b DDM |
420 | if (sd_id128_equal(p->type.uuid, arg_filter_partitions[i])) |
421 | return arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE; | |
422 | ||
423 | return arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE; | |
424 | } | |
425 | ||
8275334b | 426 | static bool partition_defer(const Partition *p) { |
7d505753 DDM |
427 | assert(p); |
428 | ||
8275334b DDM |
429 | for (size_t i = 0; i < arg_n_defer_partitions; i++) |
430 | if (sd_id128_equal(p->type.uuid, arg_defer_partitions[i])) | |
7d505753 DDM |
431 | return true; |
432 | ||
433 | return false; | |
434 | } | |
435 | ||
e594a3b1 LP |
436 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { |
437 | if (!p) | |
438 | return NULL; | |
439 | ||
440 | LIST_REMOVE(partitions, context->partitions, p); | |
441 | ||
442 | assert(context->n_partitions > 0); | |
443 | context->n_partitions--; | |
444 | ||
445 | return partition_free(p); | |
446 | } | |
447 | ||
448 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
449 | ||
450 | static Context *context_new(sd_id128_t seed) { | |
451 | Context *context; | |
452 | ||
453 | context = new(Context, 1); | |
454 | if (!context) | |
455 | return NULL; | |
456 | ||
457 | *context = (Context) { | |
458 | .start = UINT64_MAX, | |
459 | .end = UINT64_MAX, | |
460 | .total = UINT64_MAX, | |
461 | .seed = seed, | |
462 | }; | |
463 | ||
464 | return context; | |
465 | } | |
466 | ||
467 | static void context_free_free_areas(Context *context) { | |
468 | assert(context); | |
469 | ||
470 | for (size_t i = 0; i < context->n_free_areas; i++) | |
471 | free(context->free_areas[i]); | |
472 | ||
473 | context->free_areas = mfree(context->free_areas); | |
474 | context->n_free_areas = 0; | |
e594a3b1 LP |
475 | } |
476 | ||
477 | static Context *context_free(Context *context) { | |
478 | if (!context) | |
479 | return NULL; | |
480 | ||
481 | while (context->partitions) | |
482 | partition_unlink_and_free(context, context->partitions); | |
483 | assert(context->n_partitions == 0); | |
484 | ||
485 | context_free_free_areas(context); | |
486 | ||
487 | if (context->fdisk_context) | |
488 | fdisk_unref_context(context->fdisk_context); | |
489 | ||
cc751c75 | 490 | safe_close(context->backing_fd); |
db1d4e6b DDM |
491 | if (context->node_is_our_file) |
492 | unlink_and_free(context->node); | |
493 | else | |
494 | free(context->node); | |
cc751c75 | 495 | |
e594a3b1 LP |
496 | return mfree(context); |
497 | } | |
498 | ||
499 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
500 | ||
501 | static int context_add_free_area( | |
502 | Context *context, | |
503 | uint64_t size, | |
504 | Partition *after) { | |
505 | ||
506 | FreeArea *a; | |
507 | ||
508 | assert(context); | |
509 | assert(!after || !after->padding_area); | |
510 | ||
319a4f4b | 511 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
512 | return -ENOMEM; |
513 | ||
514 | a = new(FreeArea, 1); | |
515 | if (!a) | |
516 | return -ENOMEM; | |
517 | ||
518 | *a = (FreeArea) { | |
519 | .size = size, | |
520 | .after = after, | |
521 | }; | |
522 | ||
523 | context->free_areas[context->n_free_areas++] = a; | |
524 | ||
525 | if (after) | |
526 | after->padding_area = a; | |
527 | ||
528 | return 0; | |
529 | } | |
530 | ||
9ccceb9d YW |
531 | static void partition_drop_or_foreignize(Partition *p) { |
532 | if (!p || p->dropped || PARTITION_IS_FOREIGN(p)) | |
533 | return; | |
534 | ||
535 | if (PARTITION_EXISTS(p)) { | |
536 | log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.", | |
537 | strna(p->current_label ?: p->new_label), p->priority); | |
538 | ||
539 | /* Handle the partition as foreign. Do not set dropped flag. */ | |
540 | partition_foreignize(p); | |
541 | } else { | |
542 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", | |
543 | p->definition_path, p->priority); | |
544 | ||
545 | p->dropped = true; | |
546 | p->allocated_to_area = NULL; | |
547 | } | |
548 | } | |
549 | ||
550 | static bool context_drop_or_foreignize_one_priority(Context *context) { | |
e594a3b1 | 551 | int32_t priority = 0; |
e594a3b1 LP |
552 | |
553 | LIST_FOREACH(partitions, p, context->partitions) { | |
554 | if (p->dropped) | |
555 | continue; | |
e594a3b1 | 556 | |
9ccceb9d | 557 | priority = MAX(priority, p->priority); |
e594a3b1 LP |
558 | } |
559 | ||
560 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
561 | * least one existing priority */ | |
9ccceb9d | 562 | if (priority <= 0) |
e594a3b1 LP |
563 | return false; |
564 | ||
565 | LIST_FOREACH(partitions, p, context->partitions) { | |
566 | if (p->priority < priority) | |
567 | continue; | |
568 | ||
9ccceb9d | 569 | partition_drop_or_foreignize(p); |
b5b7879a DDM |
570 | |
571 | /* We ensure that all verity sibling partitions have the same priority, so it's safe | |
572 | * to drop all siblings here as well. */ | |
573 | ||
9ccceb9d YW |
574 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) |
575 | partition_drop_or_foreignize(p->siblings[mode]); | |
e594a3b1 LP |
576 | } |
577 | ||
578 | return true; | |
579 | } | |
580 | ||
a80701e6 | 581 | static uint64_t partition_min_size(const Context *context, const Partition *p) { |
e594a3b1 LP |
582 | uint64_t sz; |
583 | ||
994b3031 LP |
584 | assert(context); |
585 | assert(p); | |
586 | ||
e594a3b1 LP |
587 | /* Calculate the disk space we really need at minimum for this partition. If the partition already |
588 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
589 | * than 4K. |
590 | * | |
591 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
592 | |
593 | if (PARTITION_IS_FOREIGN(p)) { | |
594 | /* Don't allow changing size of partitions not managed by us */ | |
595 | assert(p->current_size != UINT64_MAX); | |
596 | return p->current_size; | |
597 | } | |
598 | ||
b456191d DDM |
599 | if (p->verity == VERITY_SIG) |
600 | return VERITY_SIG_SIZE; | |
601 | ||
fb08381c | 602 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 603 | |
170c9823 LP |
604 | if (!PARTITION_EXISTS(p)) { |
605 | uint64_t d = 0; | |
606 | ||
889914ef | 607 | if (p->encrypt != ENCRYPT_OFF) |
48a09a8f | 608 | d += round_up_size(LUKS2_METADATA_KEEP_FREE, context->grain_size); |
170c9823 LP |
609 | |
610 | if (p->copy_blocks_size != UINT64_MAX) | |
994b3031 | 611 | d += round_up_size(p->copy_blocks_size, context->grain_size); |
889914ef | 612 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
613 | uint64_t f; |
614 | ||
615 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
994b3031 LP |
616 | f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX; |
617 | d += f == UINT64_MAX ? context->grain_size : f; | |
170c9823 LP |
618 | } |
619 | ||
620 | if (d > sz) | |
621 | sz = d; | |
622 | } | |
757bc2e4 | 623 | |
994b3031 | 624 | return MAX(round_up_size(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, context->grain_size), sz); |
e594a3b1 LP |
625 | } |
626 | ||
994b3031 LP |
627 | static uint64_t partition_max_size(const Context *context, const Partition *p) { |
628 | uint64_t sm; | |
629 | ||
e594a3b1 LP |
630 | /* Calculate how large the partition may become at max. This is generally the configured maximum |
631 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
632 | * since we never want to shrink partitions. */ | |
633 | ||
994b3031 LP |
634 | assert(context); |
635 | assert(p); | |
636 | ||
e594a3b1 LP |
637 | if (PARTITION_IS_FOREIGN(p)) { |
638 | /* Don't allow changing size of partitions not managed by us */ | |
639 | assert(p->current_size != UINT64_MAX); | |
640 | return p->current_size; | |
641 | } | |
642 | ||
b456191d DDM |
643 | if (p->verity == VERITY_SIG) |
644 | return VERITY_SIG_SIZE; | |
645 | ||
822d9b9a YW |
646 | if (p->size_max == UINT64_MAX) |
647 | return UINT64_MAX; | |
648 | ||
994b3031 LP |
649 | sm = round_down_size(p->size_max, context->grain_size); |
650 | ||
e594a3b1 | 651 | if (p->current_size != UINT64_MAX) |
b0fbf90b | 652 | sm = MAX(p->current_size, sm); |
e594a3b1 | 653 | |
b0fbf90b | 654 | return MAX(partition_min_size(context, p), sm); |
e594a3b1 LP |
655 | } |
656 | ||
a801bb01 YW |
657 | static uint64_t partition_min_padding(const Partition *p) { |
658 | assert(p); | |
659 | return p->padding_min != UINT64_MAX ? p->padding_min : 0; | |
660 | } | |
661 | ||
662 | static uint64_t partition_max_padding(const Partition *p) { | |
663 | assert(p); | |
664 | return p->padding_max; | |
665 | } | |
666 | ||
994b3031 | 667 | static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) { |
e594a3b1 LP |
668 | uint64_t sz; |
669 | ||
670 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
671 | * takes user configured padding into account as well as any additional whitespace needed to align | |
672 | * the next partition to 4K again. */ | |
673 | ||
994b3031 LP |
674 | assert(context); |
675 | assert(p); | |
676 | ||
a801bb01 | 677 | sz = partition_min_size(context, p) + partition_min_padding(p); |
e594a3b1 LP |
678 | |
679 | if (PARTITION_EXISTS(p)) { | |
680 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
681 | assert(p->offset != UINT64_MAX); | |
994b3031 | 682 | return round_up_size(p->offset + sz, context->grain_size) - p->offset; |
e594a3b1 LP |
683 | } |
684 | ||
685 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
994b3031 | 686 | return round_up_size(sz, context->grain_size); |
e594a3b1 LP |
687 | } |
688 | ||
689 | static uint64_t free_area_available(const FreeArea *a) { | |
690 | assert(a); | |
691 | ||
692 | /* Determines how much of this free area is not allocated yet */ | |
693 | ||
694 | assert(a->size >= a->allocated); | |
695 | return a->size - a->allocated; | |
696 | } | |
697 | ||
58b06ac1 | 698 | static uint64_t free_area_current_end(Context *context, const FreeArea *a) { |
994b3031 LP |
699 | assert(context); |
700 | assert(a); | |
701 | ||
58b06ac1 YW |
702 | if (!a->after) |
703 | return free_area_available(a); | |
e594a3b1 | 704 | |
58b06ac1 YW |
705 | assert(a->after->offset != UINT64_MAX); |
706 | assert(a->after->current_size != UINT64_MAX); | |
e594a3b1 | 707 | |
58b06ac1 YW |
708 | /* Calculate where the free area ends, based on the offset of the partition preceding it. */ |
709 | return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a); | |
710 | } | |
e594a3b1 | 711 | |
58b06ac1 YW |
712 | static uint64_t free_area_min_end(Context *context, const FreeArea *a) { |
713 | assert(context); | |
714 | assert(a); | |
e594a3b1 | 715 | |
58b06ac1 YW |
716 | if (!a->after) |
717 | return 0; | |
e594a3b1 | 718 | |
58b06ac1 YW |
719 | assert(a->after->offset != UINT64_MAX); |
720 | assert(a->after->current_size != UINT64_MAX); | |
1052a114 | 721 | |
58b06ac1 YW |
722 | /* Calculate where the partition would end when we give it as much as it needs. */ |
723 | return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size); | |
724 | } | |
725 | ||
726 | static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) { | |
727 | assert(context); | |
728 | assert(a); | |
729 | ||
730 | /* Similar to free_area_available(), but takes into account that the required size and padding of the | |
731 | * preceding partition is honoured. */ | |
e594a3b1 | 732 | |
58b06ac1 | 733 | return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a)); |
e594a3b1 LP |
734 | } |
735 | ||
994b3031 LP |
736 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) { |
737 | assert(context); | |
738 | ||
739 | return CMP(free_area_available_for_new_partitions(context, *a), | |
740 | free_area_available_for_new_partitions(context, *b)); | |
e594a3b1 LP |
741 | } |
742 | ||
994b3031 LP |
743 | static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) { |
744 | assert(context); | |
e594a3b1 | 745 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ |
184cf99a | 746 | assert(amount <= total); |
994b3031 | 747 | return LESS_BY(total, round_up_size(amount, context->grain_size)); |
e594a3b1 LP |
748 | } |
749 | ||
750 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
751 | assert(amount <= total); | |
752 | return total - amount; | |
753 | } | |
754 | ||
14a4c4ed | 755 | static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) { |
e594a3b1 LP |
756 | assert(context); |
757 | ||
f39cf264 YW |
758 | /* This may be called multiple times. Reset previous assignments. */ |
759 | for (size_t i = 0; i < context->n_free_areas; i++) | |
760 | context->free_areas[i]->allocated = 0; | |
761 | ||
14a4c4ed | 762 | /* Sort free areas by size, putting smallest first */ |
994b3031 | 763 | typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context); |
e594a3b1 | 764 | |
14a4c4ed LP |
765 | /* In any case return size of the largest free area (i.e. not the size of all free areas |
766 | * combined!) */ | |
767 | if (ret_largest_free_area) | |
768 | *ret_largest_free_area = | |
769 | context->n_free_areas == 0 ? 0 : | |
994b3031 | 770 | free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]); |
14a4c4ed | 771 | |
cdbcc339 YW |
772 | /* Check that each existing partition can fit its area. */ |
773 | for (size_t i = 0; i < context->n_free_areas; i++) | |
774 | if (free_area_current_end(context, context->free_areas[i]) < | |
775 | free_area_min_end(context, context->free_areas[i])) | |
776 | return false; | |
777 | ||
14a4c4ed | 778 | /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */ |
e594a3b1 LP |
779 | LIST_FOREACH(partitions, p, context->partitions) { |
780 | bool fits = false; | |
781 | uint64_t required; | |
782 | FreeArea *a = NULL; | |
783 | ||
784 | /* Skip partitions we already dropped or that already exist */ | |
785 | if (p->dropped || PARTITION_EXISTS(p)) | |
786 | continue; | |
787 | ||
e594a3b1 | 788 | /* How much do we need to fit? */ |
994b3031 LP |
789 | required = partition_min_size_with_padding(context, p); |
790 | assert(required % context->grain_size == 0); | |
e594a3b1 LP |
791 | |
792 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
793 | a = context->free_areas[i]; | |
794 | ||
994b3031 | 795 | if (free_area_available_for_new_partitions(context, a) >= required) { |
e594a3b1 LP |
796 | fits = true; |
797 | break; | |
798 | } | |
799 | } | |
800 | ||
801 | if (!fits) | |
802 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
803 | ||
804 | /* Assign the partition to this free area */ | |
805 | p->allocated_to_area = a; | |
806 | ||
807 | /* Budget the minimal partition size */ | |
808 | a->allocated += required; | |
809 | } | |
810 | ||
811 | return true; | |
812 | } | |
813 | ||
814 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
815 | uint64_t weight_sum = 0; | |
e594a3b1 LP |
816 | |
817 | assert(context); | |
818 | assert(a); | |
819 | assert(ret); | |
820 | ||
821 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
822 | ||
823 | LIST_FOREACH(partitions, p, context->partitions) { | |
824 | if (p->padding_area != a && p->allocated_to_area != a) | |
825 | continue; | |
826 | ||
827 | if (p->weight > UINT64_MAX - weight_sum) | |
828 | goto overflow_sum; | |
829 | weight_sum += p->weight; | |
830 | ||
831 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
832 | goto overflow_sum; | |
833 | weight_sum += p->padding_weight; | |
834 | } | |
835 | ||
836 | *ret = weight_sum; | |
837 | return 0; | |
838 | ||
839 | overflow_sum: | |
840 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64bit range, refusing."); | |
841 | } | |
842 | ||
0245e15a | 843 | static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) { |
e594a3b1 | 844 | assert(weight_sum >= weight); |
e594a3b1 | 845 | |
0245e15a YW |
846 | for (;;) { |
847 | if (weight == 0) | |
848 | return 0; | |
849 | if (weight == weight_sum) | |
850 | return value; | |
851 | if (value <= UINT64_MAX / weight) | |
852 | return value * weight / weight_sum; | |
853 | ||
854 | /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the | |
855 | * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down: | |
856 | * - the sum of scale_by_weight() for all weights must not be larger than the input value, | |
857 | * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */ | |
858 | weight_sum = DIV_ROUND_UP(weight_sum, 2); | |
859 | weight /= 2; | |
e594a3b1 | 860 | } |
e594a3b1 LP |
861 | } |
862 | ||
863 | typedef enum GrowPartitionPhase { | |
bf99aed6 YW |
864 | /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */ |
865 | PHASE_FOREIGN, | |
866 | ||
e594a3b1 LP |
867 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ |
868 | PHASE_OVERCHARGE, | |
869 | ||
870 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
871 | PHASE_UNDERCHARGE, | |
872 | ||
873 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
874 | PHASE_DISTRIBUTE, | |
ae0613c6 LP |
875 | |
876 | _GROW_PARTITION_PHASE_MAX, | |
e594a3b1 LP |
877 | } GrowPartitionPhase; |
878 | ||
0245e15a | 879 | static bool context_grow_partitions_phase( |
e594a3b1 LP |
880 | Context *context, |
881 | FreeArea *a, | |
882 | GrowPartitionPhase phase, | |
883 | uint64_t *span, | |
884 | uint64_t *weight_sum) { | |
885 | ||
2a503ad2 YW |
886 | bool try_again = false; |
887 | ||
e594a3b1 LP |
888 | assert(context); |
889 | assert(a); | |
0245e15a YW |
890 | assert(span); |
891 | assert(weight_sum); | |
e594a3b1 LP |
892 | |
893 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
894 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
895 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
896 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
897 | LIST_FOREACH(partitions, p, context->partitions) { | |
898 | ||
899 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 900 | * preceding it, or allocated into it */ |
e594a3b1 LP |
901 | if (p->allocated_to_area != a && p->padding_area != a) |
902 | continue; | |
903 | ||
904 | if (p->new_size == UINT64_MAX) { | |
e594a3b1 | 905 | uint64_t share, rsz, xsz; |
2a503ad2 | 906 | bool charge = false; |
e594a3b1 LP |
907 | |
908 | /* Calculate how much this space this partition needs if everyone would get | |
909 | * the weight based share */ | |
0245e15a | 910 | share = scale_by_weight(*span, p->weight, *weight_sum); |
e594a3b1 | 911 | |
994b3031 LP |
912 | rsz = partition_min_size(context, p); |
913 | xsz = partition_max_size(context, p); | |
e594a3b1 | 914 | |
bf99aed6 YW |
915 | if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) { |
916 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
917 | ||
918 | p->new_size = p->current_size; | |
919 | charge = true; | |
920 | ||
921 | } else if (phase == PHASE_OVERCHARGE && rsz > share) { | |
e594a3b1 LP |
922 | /* This partition needs more than its calculated share. Let's assign |
923 | * it that, and take this partition out of all calculations and start | |
924 | * again. */ | |
925 | ||
926 | p->new_size = rsz; | |
927 | charge = try_again = true; | |
928 | ||
822d9b9a | 929 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
e594a3b1 LP |
930 | /* This partition accepts less than its calculated |
931 | * share. Let's assign it that, and take this partition out | |
932 | * of all calculations and start again. */ | |
933 | ||
934 | p->new_size = xsz; | |
935 | charge = try_again = true; | |
936 | ||
937 | } else if (phase == PHASE_DISTRIBUTE) { | |
938 | /* This partition can accept its calculated share. Let's | |
939 | * assign it. There's no need to restart things here since | |
940 | * assigning this shouldn't impact the shares of the other | |
941 | * partitions. */ | |
942 | ||
d7c46b5e YW |
943 | assert(share >= rsz); |
944 | p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
945 | charge = true; |
946 | } | |
947 | ||
948 | if (charge) { | |
994b3031 | 949 | *span = charge_size(context, *span, p->new_size); |
e594a3b1 LP |
950 | *weight_sum = charge_weight(*weight_sum, p->weight); |
951 | } | |
e594a3b1 LP |
952 | } |
953 | ||
954 | if (p->new_padding == UINT64_MAX) { | |
a801bb01 | 955 | uint64_t share, rsz, xsz; |
2a503ad2 | 956 | bool charge = false; |
e594a3b1 | 957 | |
0245e15a | 958 | share = scale_by_weight(*span, p->padding_weight, *weight_sum); |
e594a3b1 | 959 | |
a801bb01 YW |
960 | rsz = partition_min_padding(p); |
961 | xsz = partition_max_padding(p); | |
962 | ||
963 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
964 | p->new_padding = rsz; | |
e594a3b1 | 965 | charge = try_again = true; |
a801bb01 YW |
966 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
967 | p->new_padding = xsz; | |
e594a3b1 LP |
968 | charge = try_again = true; |
969 | } else if (phase == PHASE_DISTRIBUTE) { | |
d7c46b5e YW |
970 | assert(share >= rsz); |
971 | p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
972 | charge = true; |
973 | } | |
974 | ||
975 | if (charge) { | |
994b3031 | 976 | *span = charge_size(context, *span, p->new_padding); |
e594a3b1 LP |
977 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); |
978 | } | |
e594a3b1 LP |
979 | } |
980 | } | |
981 | ||
2a503ad2 | 982 | return !try_again; |
e594a3b1 LP |
983 | } |
984 | ||
19903a43 YW |
985 | static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) { |
986 | uint64_t m; | |
987 | ||
988 | assert(context); | |
989 | assert(a); | |
990 | assert(p); | |
991 | assert(span); | |
992 | ||
993 | if (*span == 0) | |
994 | return; | |
995 | ||
996 | if (p->allocated_to_area != a) | |
997 | return; | |
998 | ||
999 | if (PARTITION_IS_FOREIGN(p)) | |
1000 | return; | |
1001 | ||
1002 | assert(p->new_size != UINT64_MAX); | |
1003 | ||
1004 | /* Calculate new size and align. */ | |
1005 | m = round_down_size(p->new_size + *span, context->grain_size); | |
1006 | /* But ensure this doesn't shrink the size. */ | |
1007 | m = MAX(m, p->new_size); | |
1008 | /* And ensure this doesn't exceed the maximum size. */ | |
1009 | m = MIN(m, partition_max_size(context, p)); | |
1010 | ||
1011 | assert(m >= p->new_size); | |
1012 | ||
1013 | *span = charge_size(context, *span, m - p->new_size); | |
1014 | p->new_size = m; | |
1015 | } | |
1016 | ||
e594a3b1 LP |
1017 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { |
1018 | uint64_t weight_sum = 0, span; | |
1019 | int r; | |
1020 | ||
1021 | assert(context); | |
1022 | assert(a); | |
1023 | ||
1024 | r = context_sum_weights(context, a, &weight_sum); | |
1025 | if (r < 0) | |
1026 | return r; | |
1027 | ||
1028 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
1029 | span = a->size; | |
1030 | if (a->after) { | |
1031 | assert(a->after->offset != UINT64_MAX); | |
1032 | assert(a->after->current_size != UINT64_MAX); | |
1033 | ||
994b3031 | 1034 | span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset; |
e594a3b1 LP |
1035 | } |
1036 | ||
0245e15a YW |
1037 | for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;) |
1038 | if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum)) | |
1039 | phase++; /* go to the next phase */ | |
e594a3b1 | 1040 | |
162392b7 | 1041 | /* We still have space left over? Donate to preceding partition if we have one */ |
19903a43 YW |
1042 | if (span > 0 && a->after) |
1043 | context_grow_partition_one(context, a, a->after, &span); | |
e594a3b1 | 1044 | |
162392b7 | 1045 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 | 1046 | * size limit), then let's donate it to whoever wants it. */ |
03677889 | 1047 | if (span > 0) |
e594a3b1 | 1048 | LIST_FOREACH(partitions, p, context->partitions) { |
19903a43 | 1049 | context_grow_partition_one(context, a, p, &span); |
e594a3b1 LP |
1050 | if (span == 0) |
1051 | break; | |
1052 | } | |
e594a3b1 | 1053 | |
162392b7 | 1054 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
1055 | if (span > 0 && a->after) { |
1056 | assert(a->after->new_padding != UINT64_MAX); | |
1057 | a->after->new_padding += span; | |
1058 | } | |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | static int context_grow_partitions(Context *context) { | |
e594a3b1 LP |
1064 | int r; |
1065 | ||
1066 | assert(context); | |
1067 | ||
1068 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
1069 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
1070 | if (r < 0) | |
1071 | return r; | |
1072 | } | |
1073 | ||
1074 | /* All existing partitions that have no free space after them can't change size */ | |
1075 | LIST_FOREACH(partitions, p, context->partitions) { | |
1076 | if (p->dropped) | |
1077 | continue; | |
1078 | ||
1079 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
1080 | /* The algorithm above must have initialized this already */ | |
1081 | assert(p->new_size != UINT64_MAX); | |
1082 | continue; | |
1083 | } | |
1084 | ||
1085 | assert(p->new_size == UINT64_MAX); | |
1086 | p->new_size = p->current_size; | |
1087 | ||
1088 | assert(p->new_padding == UINT64_MAX); | |
1089 | p->new_padding = p->current_padding; | |
1090 | } | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
00428745 | 1095 | static uint64_t find_first_unused_partno(Context *context) { |
e594a3b1 | 1096 | uint64_t partno = 0; |
e594a3b1 LP |
1097 | |
1098 | assert(context); | |
1099 | ||
5f59807d DDM |
1100 | for (partno = 0;; partno++) { |
1101 | bool found = false; | |
1102 | LIST_FOREACH(partitions, p, context->partitions) | |
1103 | if (p->partno != UINT64_MAX && p->partno == partno) | |
1104 | found = true; | |
1105 | if (!found) | |
1106 | break; | |
e594a3b1 LP |
1107 | } |
1108 | ||
00428745 DDM |
1109 | return partno; |
1110 | } | |
1111 | ||
1112 | static void context_place_partitions(Context *context) { | |
1113 | ||
1114 | assert(context); | |
1115 | ||
e594a3b1 LP |
1116 | for (size_t i = 0; i < context->n_free_areas; i++) { |
1117 | FreeArea *a = context->free_areas[i]; | |
2ea7eb00 FS |
1118 | _unused_ uint64_t left; |
1119 | uint64_t start; | |
e594a3b1 LP |
1120 | |
1121 | if (a->after) { | |
1122 | assert(a->after->offset != UINT64_MAX); | |
1123 | assert(a->after->new_size != UINT64_MAX); | |
1124 | assert(a->after->new_padding != UINT64_MAX); | |
1125 | ||
1126 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
1127 | } else | |
1128 | start = context->start; | |
1129 | ||
994b3031 | 1130 | start = round_up_size(start, context->grain_size); |
e594a3b1 LP |
1131 | left = a->size; |
1132 | ||
1133 | LIST_FOREACH(partitions, p, context->partitions) { | |
1134 | if (p->allocated_to_area != a) | |
1135 | continue; | |
1136 | ||
1137 | p->offset = start; | |
00428745 | 1138 | p->partno = find_first_unused_partno(context); |
e594a3b1 LP |
1139 | |
1140 | assert(left >= p->new_size); | |
1141 | start += p->new_size; | |
1142 | left -= p->new_size; | |
1143 | ||
1144 | assert(left >= p->new_padding); | |
1145 | start += p->new_padding; | |
1146 | left -= p->new_padding; | |
1147 | } | |
1148 | } | |
1149 | } | |
1150 | ||
e594a3b1 LP |
1151 | static int config_parse_type( |
1152 | const char *unit, | |
1153 | const char *filename, | |
1154 | unsigned line, | |
1155 | const char *section, | |
1156 | unsigned section_line, | |
1157 | const char *lvalue, | |
1158 | int ltype, | |
1159 | const char *rvalue, | |
1160 | void *data, | |
1161 | void *userdata) { | |
1162 | ||
22e932f4 | 1163 | GptPartitionType *type = ASSERT_PTR(data); |
e594a3b1 LP |
1164 | int r; |
1165 | ||
1166 | assert(rvalue); | |
e594a3b1 | 1167 | |
22e932f4 | 1168 | r = gpt_partition_type_from_string(rvalue, type); |
e594a3b1 LP |
1169 | if (r < 0) |
1170 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
1171 | ||
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | static int config_parse_label( | |
1176 | const char *unit, | |
1177 | const char *filename, | |
1178 | unsigned line, | |
1179 | const char *section, | |
1180 | unsigned section_line, | |
1181 | const char *lvalue, | |
1182 | int ltype, | |
1183 | const char *rvalue, | |
1184 | void *data, | |
1185 | void *userdata) { | |
1186 | ||
e031166e | 1187 | _cleanup_free_ char *resolved = NULL; |
99534007 | 1188 | char **label = ASSERT_PTR(data); |
e594a3b1 LP |
1189 | int r; |
1190 | ||
1191 | assert(rvalue); | |
e594a3b1 | 1192 | |
be9ce018 LP |
1193 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
1194 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
1195 | ||
de61a04b | 1196 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved); |
e031166e | 1197 | if (r < 0) { |
e459258f | 1198 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
1199 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
1200 | return 0; | |
1201 | } | |
1202 | ||
1203 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
1204 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1205 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
1206 | return 0; | |
1207 | } | |
1208 | ||
22a0a36e LP |
1209 | r = gpt_partition_label_valid(resolved); |
1210 | if (r < 0) { | |
1211 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1212 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
1213 | resolved, rvalue); | |
1214 | return 0; | |
1215 | } | |
1216 | if (!r) { | |
e594a3b1 | 1217 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
1218 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
1219 | resolved, rvalue); | |
e594a3b1 LP |
1220 | return 0; |
1221 | } | |
1222 | ||
e031166e | 1223 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1224 | return 0; |
1225 | } | |
1226 | ||
1227 | static int config_parse_weight( | |
1228 | const char *unit, | |
1229 | const char *filename, | |
1230 | unsigned line, | |
1231 | const char *section, | |
1232 | unsigned section_line, | |
1233 | const char *lvalue, | |
1234 | int ltype, | |
1235 | const char *rvalue, | |
1236 | void *data, | |
1237 | void *userdata) { | |
1238 | ||
f126038f | 1239 | uint32_t *w = ASSERT_PTR(data), v; |
e594a3b1 LP |
1240 | int r; |
1241 | ||
1242 | assert(rvalue); | |
e594a3b1 LP |
1243 | |
1244 | r = safe_atou32(rvalue, &v); | |
1245 | if (r < 0) { | |
1246 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1247 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1248 | return 0; | |
1249 | } | |
1250 | ||
1251 | if (v > 1000U*1000U) { | |
c8f3d767 | 1252 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1253 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1254 | return 0; | |
1255 | } | |
1256 | ||
f126038f | 1257 | *w = v; |
e594a3b1 LP |
1258 | return 0; |
1259 | } | |
1260 | ||
1261 | static int config_parse_size4096( | |
1262 | const char *unit, | |
1263 | const char *filename, | |
1264 | unsigned line, | |
1265 | const char *section, | |
1266 | unsigned section_line, | |
1267 | const char *lvalue, | |
1268 | int ltype, | |
1269 | const char *rvalue, | |
1270 | void *data, | |
1271 | void *userdata) { | |
1272 | ||
1273 | uint64_t *sz = data, parsed; | |
1274 | int r; | |
1275 | ||
1276 | assert(rvalue); | |
1277 | assert(data); | |
1278 | ||
1279 | r = parse_size(rvalue, 1024, &parsed); | |
1280 | if (r < 0) | |
c8f3d767 | 1281 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1282 | "Failed to parse size value: %s", rvalue); |
1283 | ||
1284 | if (ltype > 0) | |
1285 | *sz = round_up_size(parsed, 4096); | |
1286 | else if (ltype < 0) | |
1287 | *sz = round_down_size(parsed, 4096); | |
1288 | else | |
1289 | *sz = parsed; | |
1290 | ||
1291 | if (*sz != parsed) | |
e2341b6b DT |
1292 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.", |
1293 | lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz); | |
e594a3b1 LP |
1294 | |
1295 | return 0; | |
1296 | } | |
1297 | ||
53171c04 LP |
1298 | static int config_parse_fstype( |
1299 | const char *unit, | |
1300 | const char *filename, | |
1301 | unsigned line, | |
1302 | const char *section, | |
1303 | unsigned section_line, | |
1304 | const char *lvalue, | |
1305 | int ltype, | |
1306 | const char *rvalue, | |
1307 | void *data, | |
1308 | void *userdata) { | |
1309 | ||
99534007 | 1310 | char **fstype = ASSERT_PTR(data); |
53171c04 LP |
1311 | |
1312 | assert(rvalue); | |
53171c04 LP |
1313 | |
1314 | if (!filename_is_valid(rvalue)) | |
1315 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1316 | "File system type is not valid, refusing: %s", rvalue); | |
1317 | ||
1318 | return free_and_strdup_warn(fstype, rvalue); | |
1319 | } | |
1320 | ||
8a794850 LP |
1321 | static int config_parse_copy_files( |
1322 | const char *unit, | |
1323 | const char *filename, | |
1324 | unsigned line, | |
1325 | const char *section, | |
1326 | unsigned section_line, | |
1327 | const char *lvalue, | |
1328 | int ltype, | |
1329 | const char *rvalue, | |
1330 | void *data, | |
1331 | void *userdata) { | |
1332 | ||
1333 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1334 | const char *p = rvalue, *target; | |
99534007 | 1335 | Partition *partition = ASSERT_PTR(data); |
8a794850 LP |
1336 | int r; |
1337 | ||
1338 | assert(rvalue); | |
8a794850 LP |
1339 | |
1340 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1341 | if (r < 0) | |
1342 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1343 | if (r == 0) { | |
1344 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1345 | return 0; | |
1346 | } | |
1347 | ||
1348 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1349 | if (r < 0) | |
1350 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1351 | if (r == 0) | |
1352 | target = source; /* No target, then it's the same as the source */ | |
1353 | else | |
1354 | target = buffer; | |
1355 | ||
1356 | if (!isempty(p)) | |
1357 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1358 | ||
de61a04b | 1359 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source); |
8a794850 LP |
1360 | if (r < 0) { |
1361 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1362 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1363 | return 0; | |
1364 | } | |
1365 | ||
0ade2213 LP |
1366 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1367 | if (r < 0) | |
8a794850 | 1368 | return 0; |
8a794850 | 1369 | |
de61a04b | 1370 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target); |
8a794850 LP |
1371 | if (r < 0) { |
1372 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1373 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1374 | return 0; | |
1375 | } | |
1376 | ||
0ade2213 LP |
1377 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1378 | if (r < 0) | |
8a794850 | 1379 | return 0; |
8a794850 LP |
1380 | |
1381 | r = strv_consume_pair(&partition->copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); | |
1382 | if (r < 0) | |
1383 | return log_oom(); | |
1384 | ||
1385 | return 0; | |
1386 | } | |
1387 | ||
5c08da58 LP |
1388 | static int config_parse_copy_blocks( |
1389 | const char *unit, | |
1390 | const char *filename, | |
1391 | unsigned line, | |
1392 | const char *section, | |
1393 | unsigned section_line, | |
1394 | const char *lvalue, | |
1395 | int ltype, | |
1396 | const char *rvalue, | |
1397 | void *data, | |
1398 | void *userdata) { | |
1399 | ||
1400 | _cleanup_free_ char *d = NULL; | |
99534007 | 1401 | Partition *partition = ASSERT_PTR(data); |
5c08da58 LP |
1402 | int r; |
1403 | ||
1404 | assert(rvalue); | |
5c08da58 LP |
1405 | |
1406 | if (isempty(rvalue)) { | |
1407 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1408 | partition->copy_blocks_auto = false; | |
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | if (streq(rvalue, "auto")) { | |
1413 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1414 | partition->copy_blocks_auto = true; | |
585c5c75 | 1415 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1416 | return 0; |
1417 | } | |
1418 | ||
de61a04b | 1419 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
5c08da58 LP |
1420 | if (r < 0) { |
1421 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1422 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1423 | return 0; | |
1424 | } | |
1425 | ||
1426 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1427 | if (r < 0) | |
1428 | return 0; | |
1429 | ||
1430 | free_and_replace(partition->copy_blocks_path, d); | |
1431 | partition->copy_blocks_auto = false; | |
585c5c75 | 1432 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1433 | return 0; |
1434 | } | |
1435 | ||
d83d8048 LP |
1436 | static int config_parse_make_dirs( |
1437 | const char *unit, | |
1438 | const char *filename, | |
1439 | unsigned line, | |
1440 | const char *section, | |
1441 | unsigned section_line, | |
1442 | const char *lvalue, | |
1443 | int ltype, | |
1444 | const char *rvalue, | |
1445 | void *data, | |
1446 | void *userdata) { | |
1447 | ||
99534007 DT |
1448 | Partition *partition = ASSERT_PTR(data); |
1449 | const char *p = ASSERT_PTR(rvalue); | |
d83d8048 LP |
1450 | int r; |
1451 | ||
d83d8048 LP |
1452 | for (;;) { |
1453 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1454 | ||
1455 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1456 | if (r == -ENOMEM) | |
1457 | return log_oom(); | |
1458 | if (r < 0) { | |
1459 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1460 | return 0; | |
1461 | } | |
1462 | if (r == 0) | |
1463 | return 0; | |
1464 | ||
de61a04b | 1465 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
d83d8048 LP |
1466 | if (r < 0) { |
1467 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1468 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1469 | continue; | |
1470 | } | |
1471 | ||
1472 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1473 | if (r < 0) | |
1474 | continue; | |
1475 | ||
1476 | r = strv_consume(&partition->make_directories, TAKE_PTR(d)); | |
1477 | if (r < 0) | |
1478 | return log_oom(); | |
1479 | } | |
1480 | } | |
1481 | ||
889914ef LP |
1482 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1483 | ||
e73309c5 LP |
1484 | static int config_parse_gpt_flags( |
1485 | const char *unit, | |
1486 | const char *filename, | |
1487 | unsigned line, | |
1488 | const char *section, | |
1489 | unsigned section_line, | |
1490 | const char *lvalue, | |
1491 | int ltype, | |
1492 | const char *rvalue, | |
1493 | void *data, | |
1494 | void *userdata) { | |
1495 | ||
99534007 | 1496 | uint64_t *gpt_flags = ASSERT_PTR(data); |
e73309c5 LP |
1497 | int r; |
1498 | ||
1499 | assert(rvalue); | |
e73309c5 LP |
1500 | |
1501 | r = safe_atou64(rvalue, gpt_flags); | |
1502 | if (r < 0) { | |
1503 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1504 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1505 | return 0; | |
1506 | } | |
1507 | ||
1508 | return 0; | |
1509 | } | |
1510 | ||
11749b61 DDM |
1511 | static int config_parse_uuid( |
1512 | const char *unit, | |
1513 | const char *filename, | |
1514 | unsigned line, | |
1515 | const char *section, | |
1516 | unsigned section_line, | |
1517 | const char *lvalue, | |
1518 | int ltype, | |
1519 | const char *rvalue, | |
1520 | void *data, | |
1521 | void *userdata) { | |
1522 | ||
1523 | Partition *partition = ASSERT_PTR(data); | |
1524 | int r; | |
1525 | ||
1526 | if (isempty(rvalue)) { | |
1527 | partition->new_uuid = SD_ID128_NULL; | |
1528 | partition->new_uuid_is_set = false; | |
1529 | return 0; | |
1530 | } | |
1531 | ||
1532 | if (streq(rvalue, "null")) { | |
1533 | partition->new_uuid = SD_ID128_NULL; | |
1534 | partition->new_uuid_is_set = true; | |
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | r = sd_id128_from_string(rvalue, &partition->new_uuid); | |
1539 | if (r < 0) { | |
1540 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue); | |
1541 | return 0; | |
1542 | } | |
1543 | ||
1544 | partition->new_uuid_is_set = true; | |
1545 | ||
1546 | return 0; | |
1547 | } | |
1548 | ||
b5b7879a | 1549 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF, "Invalid verity mode"); |
5c33b686 | 1550 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_minimize, minimize_mode, MinimizeMode, MINIMIZE_OFF, "Invalid minimize mode"); |
b5b7879a | 1551 | |
39fc0174 | 1552 | static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) { |
e594a3b1 LP |
1553 | |
1554 | ConfigTableItem table[] = { | |
22e932f4 | 1555 | { "Partition", "Type", config_parse_type, 0, &p->type }, |
4cee8333 DDM |
1556 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, |
1557 | { "Partition", "UUID", config_parse_uuid, 0, p }, | |
1558 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, | |
1559 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1560 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1561 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1562 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1563 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1564 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1565 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1566 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1567 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1568 | { "Partition", "CopyFiles", config_parse_copy_files, 0, p }, | |
1569 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, p }, | |
1570 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
1571 | { "Partition", "Verity", config_parse_verity, 0, &p->verity }, | |
1572 | { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key }, | |
1573 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, | |
1574 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
1575 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, | |
1576 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, | |
1577 | { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format }, | |
5c33b686 | 1578 | { "Partition", "Minimize", config_parse_minimize, 0, &p->minimize }, |
e594a3b1 LP |
1579 | {} |
1580 | }; | |
1581 | int r; | |
39fc0174 RP |
1582 | _cleanup_free_ char *filename = NULL; |
1583 | const char* dropin_dirname; | |
e594a3b1 | 1584 | |
39fc0174 RP |
1585 | r = path_extract_filename(path, &filename); |
1586 | if (r < 0) | |
bef69ae8 | 1587 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); |
39fc0174 RP |
1588 | |
1589 | dropin_dirname = strjoina(filename, ".d"); | |
1590 | ||
1591 | r = config_parse_many( | |
1592 | STRV_MAKE_CONST(path), | |
1593 | conf_file_dirs, | |
1594 | dropin_dirname, | |
1595 | "Partition\0", | |
1596 | config_item_table_lookup, table, | |
1597 | CONFIG_PARSE_WARN, | |
1598 | p, | |
1599 | NULL, | |
1600 | &p->drop_in_files); | |
e594a3b1 LP |
1601 | if (r < 0) |
1602 | return r; | |
1603 | ||
7d505753 DDM |
1604 | if (partition_exclude(p)) |
1605 | return 0; | |
1606 | ||
e594a3b1 LP |
1607 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) |
1608 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1609 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1610 | ||
1611 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1612 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1613 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1614 | ||
22e932f4 | 1615 | if (sd_id128_is_null(p->type.uuid)) |
e594a3b1 LP |
1616 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1617 | "Type= not defined, refusing."); | |
1618 | ||
5c08da58 LP |
1619 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1620 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
53171c04 | 1621 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5c08da58 | 1622 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); |
53171c04 | 1623 | |
d83d8048 | 1624 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1625 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1626 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1627 | ||
5c08da58 | 1628 | if (!p->format && (!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories) || (p->encrypt != ENCRYPT_OFF && !(p->copy_blocks_path || p->copy_blocks_auto)))) { |
b9df3536 | 1629 | /* Pick "ext4" as file system if we are configured to copy files or encrypt the device */ |
8a794850 LP |
1630 | p->format = strdup("ext4"); |
1631 | if (!p->format) | |
1632 | return log_oom(); | |
1633 | } | |
1634 | ||
5c33b686 | 1635 | if (p->minimize != MINIMIZE_OFF && !p->format) |
c4a87b76 DDM |
1636 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1637 | "Minimize= can only be enabled if Format= is set"); | |
1638 | ||
5c33b686 DDM |
1639 | if (p->minimize == MINIMIZE_BEST && !fstype_is_ro(p->format)) |
1640 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1641 | "Minimize=best can only be used with read-only filesystems"); | |
1642 | ||
6d6cefad DDM |
1643 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && !mkfs_supports_root_option(p->format) && geteuid() != 0) |
1644 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EPERM), | |
1645 | "Need to be root to populate %s filesystems with CopyFiles=/MakeDirectories=", | |
1646 | p->format); | |
1647 | ||
0eb23798 DDM |
1648 | if (p->format && fstype_is_ro(p->format) && strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
1649 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1650 | "Cannot format %s filesystem without source files, refusing", p->format); | |
1651 | ||
b5b7879a DDM |
1652 | if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) { |
1653 | r = dlopen_cryptsetup(); | |
1654 | if (r < 0) | |
1655 | return log_syntax(NULL, LOG_ERR, path, 1, r, | |
1656 | "libcryptsetup not found, Verity=/Encrypt= are not supported: %m"); | |
1657 | } | |
1658 | ||
1659 | if (p->verity != VERITY_OFF && !p->verity_match_key) | |
1660 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1661 | "VerityMatchKey= must be set if Verity=%s", verity_mode_to_string(p->verity)); | |
1662 | ||
1663 | if (p->verity == VERITY_OFF && p->verity_match_key) | |
1664 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1665 | "VerityMatchKey= can only be set if Verity= is not \"%s\"", | |
1666 | verity_mode_to_string(p->verity)); | |
1667 | ||
b456191d DDM |
1668 | if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && |
1669 | (p->copy_files || p->copy_blocks_path || p->copy_blocks_auto || p->format || p->make_directories)) | |
b5b7879a DDM |
1670 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1671 | "CopyBlocks=/CopyFiles=/Format=/MakeDirectories= cannot be used with Verity=%s", | |
1672 | verity_mode_to_string(p->verity)); | |
1673 | ||
1674 | if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF) | |
1675 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1676 | "Encrypting verity hash/data partitions is not supported"); | |
1677 | ||
b456191d DDM |
1678 | if (p->verity == VERITY_SIG && !arg_private_key) |
1679 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1680 | "Verity signature partition requested but no private key provided (--private-key=)"); | |
1681 | ||
1682 | if (p->verity == VERITY_SIG && !arg_certificate) | |
1683 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
ba4a5eff | 1684 | "Verity signature partition requested but no PEM certificate provided (--certificate=)"); |
b456191d DDM |
1685 | |
1686 | if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX)) | |
1687 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1688 | "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s", | |
1689 | verity_mode_to_string(p->verity)); | |
1690 | ||
e73309c5 | 1691 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
c1979cd8 | 1692 | if (IN_SET(p->type.designator, PARTITION_ROOT_VERITY, PARTITION_USR_VERITY) && p->read_only < 0) |
e73309c5 LP |
1693 | p->read_only = true; |
1694 | ||
1c41c1dc | 1695 | /* Default to "growfs" on, unless read-only */ |
22e932f4 | 1696 | if (gpt_partition_type_knows_growfs(p->type) && |
1c41c1dc LP |
1697 | p->read_only <= 0) |
1698 | p->growfs = true; | |
1699 | ||
4cee8333 DDM |
1700 | if (!p->split_name_format) { |
1701 | char *s = strdup("%t"); | |
1702 | if (!s) | |
1703 | return log_oom(); | |
1704 | ||
1705 | p->split_name_format = s; | |
1706 | } else if (streq(p->split_name_format, "-")) | |
1707 | p->split_name_format = mfree(p->split_name_format); | |
1708 | ||
7d505753 | 1709 | return 1; |
e594a3b1 LP |
1710 | } |
1711 | ||
b5b7879a DDM |
1712 | static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) { |
1713 | Partition *s = NULL; | |
1714 | ||
1715 | assert(p); | |
1716 | assert(p->verity != VERITY_OFF); | |
1717 | assert(p->verity_match_key); | |
1718 | assert(mode != VERITY_OFF); | |
1719 | assert(p->verity != mode); | |
1720 | assert(ret); | |
1721 | ||
1722 | /* Try to find the matching sibling partition of the given type for a verity partition. For a data | |
af3d3873 YW |
1723 | * partition, this is the corresponding hash partition with the same verity name (and vice versa for |
1724 | * the hash partition). */ | |
b5b7879a DDM |
1725 | |
1726 | LIST_FOREACH(partitions, q, context->partitions) { | |
1727 | if (p == q) | |
1728 | continue; | |
1729 | ||
1730 | if (q->verity != mode) | |
1731 | continue; | |
1732 | ||
1733 | assert(q->verity_match_key); | |
1734 | ||
1735 | if (!streq(p->verity_match_key, q->verity_match_key)) | |
1736 | continue; | |
1737 | ||
1738 | if (s) | |
1739 | return -ENOTUNIQ; | |
1740 | ||
1741 | s = q; | |
1742 | } | |
1743 | ||
1744 | if (!s) | |
1745 | return -ENXIO; | |
1746 | ||
1747 | *ret = s; | |
1748 | ||
1749 | return 0; | |
1750 | } | |
1751 | ||
e594a3b1 LP |
1752 | static int context_read_definitions( |
1753 | Context *context, | |
224c853f | 1754 | char **directories, |
e594a3b1 LP |
1755 | const char *root) { |
1756 | ||
1757 | _cleanup_strv_free_ char **files = NULL; | |
1758 | Partition *last = NULL; | |
e594a3b1 | 1759 | int r; |
39fc0174 | 1760 | const char *const *dirs; |
e594a3b1 LP |
1761 | |
1762 | assert(context); | |
1763 | ||
224c853f | 1764 | dirs = (const char* const*) (directories ?: CONF_PATHS_STRV("repart.d")); |
39fc0174 | 1765 | |
224c853f | 1766 | r = conf_files_list_strv(&files, ".conf", directories ? NULL : root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs); |
e594a3b1 LP |
1767 | if (r < 0) |
1768 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
1769 | ||
1770 | STRV_FOREACH(f, files) { | |
1771 | _cleanup_(partition_freep) Partition *p = NULL; | |
1772 | ||
1773 | p = partition_new(); | |
1774 | if (!p) | |
1775 | return log_oom(); | |
1776 | ||
1777 | p->definition_path = strdup(*f); | |
1778 | if (!p->definition_path) | |
1779 | return log_oom(); | |
1780 | ||
39fc0174 | 1781 | r = partition_read_definition(p, *f, dirs); |
e594a3b1 LP |
1782 | if (r < 0) |
1783 | return r; | |
7d505753 DDM |
1784 | if (r == 0) |
1785 | continue; | |
e594a3b1 LP |
1786 | |
1787 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
1788 | last = TAKE_PTR(p); | |
1789 | context->n_partitions++; | |
1790 | } | |
1791 | ||
b5b7879a DDM |
1792 | /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */ |
1793 | ||
1794 | LIST_FOREACH(partitions, p, context->partitions) { | |
1795 | if (p->verity == VERITY_OFF) | |
1796 | continue; | |
1797 | ||
1798 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
b456191d | 1799 | Partition *q = NULL; |
b5b7879a DDM |
1800 | |
1801 | if (p->verity == mode) | |
1802 | continue; | |
1803 | ||
1804 | if (p->siblings[mode]) | |
1805 | continue; | |
1806 | ||
1807 | r = find_verity_sibling(context, p, mode, &q); | |
8e52ed02 DDM |
1808 | if (r == -ENXIO) { |
1809 | if (mode != VERITY_SIG) | |
1810 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1811 | "Missing verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1812 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
1813 | } else if (r == -ENOTUNIQ) | |
b5b7879a DDM |
1814 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), |
1815 | "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s", | |
1816 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
8e52ed02 DDM |
1817 | else if (r < 0) |
1818 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r, | |
1819 | "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s", | |
1820 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
b5b7879a | 1821 | |
b456191d DDM |
1822 | if (q) { |
1823 | if (q->priority != p->priority) | |
1824 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1825 | "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s", | |
1826 | p->priority, q->priority, p->verity_match_key); | |
b5b7879a | 1827 | |
b456191d DDM |
1828 | p->siblings[mode] = q; |
1829 | } | |
b5b7879a DDM |
1830 | } |
1831 | } | |
1832 | ||
e594a3b1 LP |
1833 | return 0; |
1834 | } | |
1835 | ||
e594a3b1 LP |
1836 | static int determine_current_padding( |
1837 | struct fdisk_context *c, | |
1838 | struct fdisk_table *t, | |
1839 | struct fdisk_partition *p, | |
994b3031 LP |
1840 | uint64_t secsz, |
1841 | uint64_t grainsz, | |
e594a3b1 LP |
1842 | uint64_t *ret) { |
1843 | ||
1844 | size_t n_partitions; | |
1845 | uint64_t offset, next = UINT64_MAX; | |
1846 | ||
1847 | assert(c); | |
1848 | assert(t); | |
1849 | assert(p); | |
1850 | ||
1851 | if (!fdisk_partition_has_end(p)) | |
1852 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1853 | ||
1854 | offset = fdisk_partition_get_end(p); | |
994b3031 LP |
1855 | assert(offset < UINT64_MAX / secsz); |
1856 | offset *= secsz; | |
e594a3b1 LP |
1857 | |
1858 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 1859 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 LP |
1860 | struct fdisk_partition *q; |
1861 | uint64_t start; | |
1862 | ||
1863 | q = fdisk_table_get_partition(t, i); | |
1864 | if (!q) | |
1865 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1866 | ||
1867 | if (fdisk_partition_is_used(q) <= 0) | |
1868 | continue; | |
1869 | ||
1870 | if (!fdisk_partition_has_start(q)) | |
1871 | continue; | |
1872 | ||
1873 | start = fdisk_partition_get_start(q); | |
994b3031 LP |
1874 | assert(start < UINT64_MAX / secsz); |
1875 | start *= secsz; | |
e594a3b1 LP |
1876 | |
1877 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1878 | next = start; | |
1879 | } | |
1880 | ||
1881 | if (next == UINT64_MAX) { | |
1882 | /* No later partition? In that case check the end of the usable area */ | |
1883 | next = fdisk_get_last_lba(c); | |
1884 | assert(next < UINT64_MAX); | |
1885 | next++; /* The last LBA is one sector before the end */ | |
1886 | ||
994b3031 LP |
1887 | assert(next < UINT64_MAX / secsz); |
1888 | next *= secsz; | |
e594a3b1 LP |
1889 | |
1890 | if (offset > next) | |
1891 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1892 | } | |
1893 | ||
1894 | assert(next >= offset); | |
994b3031 LP |
1895 | offset = round_up_size(offset, grainsz); |
1896 | next = round_down_size(next, grainsz); | |
e594a3b1 | 1897 | |
a6f44d61 | 1898 | *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */ |
e594a3b1 LP |
1899 | return 0; |
1900 | } | |
1901 | ||
1902 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { | |
1903 | _cleanup_free_ char *ids = NULL; | |
1904 | int r; | |
1905 | ||
1906 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
1907 | return -EINVAL; | |
1908 | ||
b7416360 | 1909 | ids = new(char, SD_ID128_UUID_STRING_MAX); |
e594a3b1 LP |
1910 | if (!ids) |
1911 | return -ENOMEM; | |
1912 | ||
b7416360 | 1913 | r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids)); |
e594a3b1 LP |
1914 | if (r < 0) |
1915 | return r; | |
1916 | ||
1917 | TAKE_PTR(ids); | |
1918 | return 0; | |
1919 | } | |
1920 | ||
1921 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
1922 | int r; | |
1923 | ||
1924 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
1925 | if (r < 0) | |
1926 | return r; | |
1927 | ||
1928 | r = fdisk_set_disklabel_id(c); | |
1929 | if (r < 0) | |
1930 | return r; | |
1931 | ||
1932 | return fdisk_set_ask(c, NULL, NULL); | |
1933 | } | |
1934 | ||
53171c04 | 1935 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 | 1936 | union { |
ade99252 | 1937 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
1938 | sd_id128_t id; |
1939 | } result; | |
1940 | ||
53171c04 | 1941 | assert(token); |
e594a3b1 LP |
1942 | assert(ret); |
1943 | ||
53171c04 LP |
1944 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
1945 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
1946 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
1947 | * the machine ID we don't want to leak. */ | |
e594a3b1 | 1948 | |
ade99252 | 1949 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md); |
e594a3b1 LP |
1950 | |
1951 | /* Take the first half, mark it as v4 UUID */ | |
1952 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
1953 | *ret = id128_make_v4_uuid(result.id); | |
1954 | return 0; | |
1955 | } | |
1956 | ||
cc751c75 | 1957 | static int context_load_partition_table(Context *context) { |
e594a3b1 LP |
1958 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
1959 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
1960 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
1961 | _cleanup_free_ char *disk_uuid_string = NULL; | |
1962 | bool from_scratch = false; | |
1963 | sd_id128_t disk_uuid; | |
1964 | size_t n_partitions; | |
994b3031 LP |
1965 | unsigned long secsz; |
1966 | uint64_t grainsz; | |
e594a3b1 LP |
1967 | int r; |
1968 | ||
1969 | assert(context); | |
170c9823 LP |
1970 | assert(!context->fdisk_context); |
1971 | assert(!context->free_areas); | |
1972 | assert(context->start == UINT64_MAX); | |
1973 | assert(context->end == UINT64_MAX); | |
1974 | assert(context->total == UINT64_MAX); | |
e594a3b1 | 1975 | |
a26f4a49 LP |
1976 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
1977 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
cc751c75 | 1978 | if (context->backing_fd < 0) { |
f8cf3d19 LP |
1979 | c = fdisk_new_context(); |
1980 | if (!c) | |
1981 | return log_oom(); | |
1982 | ||
cc751c75 | 1983 | r = fdisk_assign_device(c, context->node, arg_dry_run); |
f8cf3d19 | 1984 | } else |
cc751c75 | 1985 | r = fdisk_new_context_fd(context->backing_fd, arg_dry_run, &c); |
f8cf3d19 | 1986 | |
170c9823 LP |
1987 | if (r == -EINVAL && arg_size_auto) { |
1988 | struct stat st; | |
1989 | ||
1990 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
1991 | * it if automatic sizing is requested. */ | |
1992 | ||
cc751c75 DDM |
1993 | if (context->backing_fd < 0) |
1994 | r = stat(context->node, &st); | |
170c9823 | 1995 | else |
cc751c75 | 1996 | r = fstat(context->backing_fd, &st); |
170c9823 | 1997 | if (r < 0) |
cc751c75 | 1998 | return log_error_errno(errno, "Failed to stat block device '%s': %m", context->node); |
170c9823 | 1999 | |
994b3031 LP |
2000 | if (S_ISREG(st.st_mode) && st.st_size == 0) { |
2001 | /* User the fallback values if we have no better idea */ | |
2002 | context->sector_size = 512; | |
2003 | context->grain_size = 4096; | |
170c9823 | 2004 | return /* from_scratch = */ true; |
994b3031 | 2005 | } |
170c9823 LP |
2006 | |
2007 | r = -EINVAL; | |
2008 | } | |
e594a3b1 | 2009 | if (r < 0) |
cc751c75 | 2010 | return log_error_errno(r, "Failed to open device '%s': %m", context->node); |
a26f4a49 | 2011 | |
cc751c75 | 2012 | if (context->backing_fd < 0) { |
a26f4a49 | 2013 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ |
cc751c75 DDM |
2014 | context->backing_fd = fd_reopen(fdisk_get_devfd(c), O_RDONLY|O_CLOEXEC); |
2015 | if (context->backing_fd < 0) | |
2016 | return log_error_errno(context->backing_fd, "Failed to duplicate fdisk fd: %m"); | |
e594a3b1 | 2017 | |
25baae50 | 2018 | /* Tell udev not to interfere while we are processing the device */ |
cc751c75 | 2019 | if (flock(context->backing_fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) |
25baae50 DDM |
2020 | return log_error_errno(errno, "Failed to lock block device: %m"); |
2021 | } | |
e594a3b1 | 2022 | |
994b3031 LP |
2023 | /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the |
2024 | * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use | |
2025 | * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean | |
2026 | * the same thing universally. Also note that regardless what kind of sector size is in use we'll | |
2027 | * place partitions at multiples of 4K. */ | |
2028 | secsz = fdisk_get_sector_size(c); | |
2029 | ||
2030 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
983ce0b5 LP |
2031 | if (secsz < 512 || !ISPOWEROF2(secsz)) |
2032 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
994b3031 LP |
2033 | |
2034 | /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or | |
2035 | * larger */ | |
2036 | grainsz = secsz < 4096 ? 4096 : secsz; | |
2037 | ||
2038 | log_debug("Sector size of device is %lu bytes. Using grain size of %" PRIu64 ".", secsz, grainsz); | |
2039 | ||
e594a3b1 LP |
2040 | switch (arg_empty) { |
2041 | ||
2042 | case EMPTY_REFUSE: | |
2043 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
2044 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2045 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2046 | |
2047 | break; | |
2048 | ||
2049 | case EMPTY_REQUIRE: | |
2050 | /* Require an empty disk, refuse any existing partition table */ | |
2051 | r = fdisk_has_label(c); | |
2052 | if (r < 0) | |
cc751c75 | 2053 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 | 2054 | if (r > 0) |
cc751c75 | 2055 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", context->node); |
e594a3b1 LP |
2056 | |
2057 | from_scratch = true; | |
2058 | break; | |
2059 | ||
2060 | case EMPTY_ALLOW: | |
2061 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
2062 | r = fdisk_has_label(c); | |
2063 | if (r < 0) | |
cc751c75 | 2064 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 LP |
2065 | if (r > 0) { |
2066 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2067 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2068 | } else |
2069 | from_scratch = true; | |
2070 | ||
2071 | break; | |
2072 | ||
2073 | case EMPTY_FORCE: | |
a26f4a49 | 2074 | case EMPTY_CREATE: |
e594a3b1 LP |
2075 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
2076 | from_scratch = true; | |
2077 | break; | |
2078 | } | |
2079 | ||
2080 | if (from_scratch) { | |
e594a3b1 LP |
2081 | r = fdisk_create_disklabel(c, "gpt"); |
2082 | if (r < 0) | |
2083 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
2084 | ||
53171c04 | 2085 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2086 | if (r < 0) |
2087 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2088 | ||
2089 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
2090 | if (r < 0) | |
2091 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2092 | ||
2093 | goto add_initial_free_area; | |
2094 | } | |
2095 | ||
2096 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
2097 | if (r < 0) | |
2098 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
2099 | ||
2100 | r = sd_id128_from_string(disk_uuid_string, &disk_uuid); | |
2101 | if (r < 0) | |
2102 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
2103 | ||
2104 | if (sd_id128_is_null(disk_uuid)) { | |
53171c04 | 2105 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2106 | if (r < 0) |
2107 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2108 | ||
2109 | r = fdisk_set_disklabel_id(c); | |
2110 | if (r < 0) | |
2111 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2112 | } | |
2113 | ||
2114 | r = fdisk_get_partitions(c, &t); | |
2115 | if (r < 0) | |
2116 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
2117 | ||
2118 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 2119 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 | 2120 | _cleanup_free_ char *label_copy = NULL; |
03677889 | 2121 | Partition *last = NULL; |
e594a3b1 | 2122 | struct fdisk_partition *p; |
63b96eb9 | 2123 | const char *label; |
e594a3b1 LP |
2124 | uint64_t sz, start; |
2125 | bool found = false; | |
2126 | sd_id128_t ptid, id; | |
2127 | size_t partno; | |
2128 | ||
2129 | p = fdisk_table_get_partition(t, i); | |
2130 | if (!p) | |
2131 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
2132 | ||
2133 | if (fdisk_partition_is_used(p) <= 0) | |
2134 | continue; | |
2135 | ||
2136 | if (fdisk_partition_has_start(p) <= 0 || | |
2137 | fdisk_partition_has_size(p) <= 0 || | |
2138 | fdisk_partition_has_partno(p) <= 0) | |
2139 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
2140 | ||
63b96eb9 | 2141 | r = fdisk_partition_get_type_as_id128(p, &ptid); |
e594a3b1 | 2142 | if (r < 0) |
63b96eb9 | 2143 | return log_error_errno(r, "Failed to query partition type UUID: %m"); |
e594a3b1 | 2144 | |
02e32aa6 | 2145 | r = fdisk_partition_get_uuid_as_id128(p, &id); |
e594a3b1 | 2146 | if (r < 0) |
02e32aa6 | 2147 | return log_error_errno(r, "Failed to query partition UUID: %m"); |
e594a3b1 LP |
2148 | |
2149 | label = fdisk_partition_get_name(p); | |
2150 | if (!isempty(label)) { | |
2151 | label_copy = strdup(label); | |
2152 | if (!label_copy) | |
2153 | return log_oom(); | |
2154 | } | |
2155 | ||
2156 | sz = fdisk_partition_get_size(p); | |
ac33e147 | 2157 | assert(sz <= UINT64_MAX/secsz); |
994b3031 | 2158 | sz *= secsz; |
e594a3b1 LP |
2159 | |
2160 | start = fdisk_partition_get_start(p); | |
ac33e147 | 2161 | assert(start <= UINT64_MAX/secsz); |
994b3031 | 2162 | start *= secsz; |
e594a3b1 LP |
2163 | |
2164 | partno = fdisk_partition_get_partno(p); | |
2165 | ||
2166 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
2167 | left_boundary = start; | |
2168 | ||
2169 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
2170 | * an existing one assigned yet. */ | |
2171 | LIST_FOREACH(partitions, pp, context->partitions) { | |
2172 | last = pp; | |
2173 | ||
22e932f4 | 2174 | if (!sd_id128_equal(pp->type.uuid, ptid)) |
e594a3b1 LP |
2175 | continue; |
2176 | ||
2177 | if (!pp->current_partition) { | |
2178 | pp->current_uuid = id; | |
2179 | pp->current_size = sz; | |
2180 | pp->offset = start; | |
2181 | pp->partno = partno; | |
2182 | pp->current_label = TAKE_PTR(label_copy); | |
2183 | ||
2184 | pp->current_partition = p; | |
2185 | fdisk_ref_partition(p); | |
2186 | ||
994b3031 | 2187 | r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding); |
e594a3b1 LP |
2188 | if (r < 0) |
2189 | return r; | |
2190 | ||
2191 | if (pp->current_padding > 0) { | |
2192 | r = context_add_free_area(context, pp->current_padding, pp); | |
2193 | if (r < 0) | |
2194 | return r; | |
2195 | } | |
2196 | ||
2197 | found = true; | |
2198 | break; | |
2199 | } | |
2200 | } | |
2201 | ||
2202 | /* If we have no matching definition, create a new one. */ | |
2203 | if (!found) { | |
2204 | _cleanup_(partition_freep) Partition *np = NULL; | |
2205 | ||
2206 | np = partition_new(); | |
2207 | if (!np) | |
2208 | return log_oom(); | |
2209 | ||
2210 | np->current_uuid = id; | |
22e932f4 | 2211 | np->type = gpt_partition_type_from_uuid(ptid); |
e594a3b1 LP |
2212 | np->current_size = sz; |
2213 | np->offset = start; | |
2214 | np->partno = partno; | |
2215 | np->current_label = TAKE_PTR(label_copy); | |
2216 | ||
2217 | np->current_partition = p; | |
2218 | fdisk_ref_partition(p); | |
2219 | ||
994b3031 | 2220 | r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding); |
e594a3b1 LP |
2221 | if (r < 0) |
2222 | return r; | |
2223 | ||
2224 | if (np->current_padding > 0) { | |
2225 | r = context_add_free_area(context, np->current_padding, np); | |
2226 | if (r < 0) | |
2227 | return r; | |
2228 | } | |
2229 | ||
2230 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
2231 | context->n_partitions++; | |
2232 | } | |
2233 | } | |
2234 | ||
2235 | add_initial_free_area: | |
2236 | nsectors = fdisk_get_nsectors(c); | |
994b3031 LP |
2237 | assert(nsectors <= UINT64_MAX/secsz); |
2238 | nsectors *= secsz; | |
e594a3b1 LP |
2239 | |
2240 | first_lba = fdisk_get_first_lba(c); | |
994b3031 LP |
2241 | assert(first_lba <= UINT64_MAX/secsz); |
2242 | first_lba *= secsz; | |
e594a3b1 LP |
2243 | |
2244 | last_lba = fdisk_get_last_lba(c); | |
2245 | assert(last_lba < UINT64_MAX); | |
2246 | last_lba++; | |
994b3031 LP |
2247 | assert(last_lba <= UINT64_MAX/secsz); |
2248 | last_lba *= secsz; | |
e594a3b1 LP |
2249 | |
2250 | assert(last_lba >= first_lba); | |
2251 | ||
2252 | if (left_boundary == UINT64_MAX) { | |
2253 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
2254 | ||
994b3031 LP |
2255 | first_lba = round_up_size(first_lba, grainsz); |
2256 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2257 | |
2258 | if (last_lba > first_lba) { | |
2259 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
2260 | if (r < 0) | |
2261 | return r; | |
2262 | } | |
2263 | } else { | |
2264 | /* Add space left of first partition */ | |
2265 | assert(left_boundary >= first_lba); | |
2266 | ||
994b3031 LP |
2267 | first_lba = round_up_size(first_lba, grainsz); |
2268 | left_boundary = round_down_size(left_boundary, grainsz); | |
2269 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2270 | |
2271 | if (left_boundary > first_lba) { | |
2272 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
2273 | if (r < 0) | |
2274 | return r; | |
2275 | } | |
2276 | } | |
2277 | ||
2278 | context->start = first_lba; | |
2279 | context->end = last_lba; | |
2280 | context->total = nsectors; | |
994b3031 LP |
2281 | context->sector_size = secsz; |
2282 | context->grain_size = grainsz; | |
e594a3b1 LP |
2283 | context->fdisk_context = TAKE_PTR(c); |
2284 | ||
2285 | return from_scratch; | |
2286 | } | |
2287 | ||
2288 | static void context_unload_partition_table(Context *context) { | |
e594a3b1 LP |
2289 | assert(context); |
2290 | ||
80a226b2 | 2291 | LIST_FOREACH(partitions, p, context->partitions) { |
e594a3b1 LP |
2292 | |
2293 | /* Entirely remove partitions that have no configuration */ | |
2294 | if (PARTITION_IS_FOREIGN(p)) { | |
2295 | partition_unlink_and_free(context, p); | |
2296 | continue; | |
2297 | } | |
2298 | ||
2299 | /* Otherwise drop all data we read off the block device and everything we might have | |
2300 | * calculated based on it */ | |
2301 | ||
2302 | p->dropped = false; | |
2303 | p->current_size = UINT64_MAX; | |
2304 | p->new_size = UINT64_MAX; | |
2305 | p->current_padding = UINT64_MAX; | |
2306 | p->new_padding = UINT64_MAX; | |
2307 | p->partno = UINT64_MAX; | |
2308 | p->offset = UINT64_MAX; | |
2309 | ||
2310 | if (p->current_partition) { | |
2311 | fdisk_unref_partition(p->current_partition); | |
2312 | p->current_partition = NULL; | |
2313 | } | |
2314 | ||
2315 | if (p->new_partition) { | |
2316 | fdisk_unref_partition(p->new_partition); | |
2317 | p->new_partition = NULL; | |
2318 | } | |
2319 | ||
2320 | p->padding_area = NULL; | |
2321 | p->allocated_to_area = NULL; | |
2322 | ||
15d43e30 LP |
2323 | p->current_uuid = SD_ID128_NULL; |
2324 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
2325 | } |
2326 | ||
2327 | context->start = UINT64_MAX; | |
2328 | context->end = UINT64_MAX; | |
2329 | context->total = UINT64_MAX; | |
2330 | ||
2331 | if (context->fdisk_context) { | |
2332 | fdisk_unref_context(context->fdisk_context); | |
2333 | context->fdisk_context = NULL; | |
2334 | } | |
2335 | ||
2336 | context_free_free_areas(context); | |
2337 | } | |
2338 | ||
2339 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
2b59bf51 | 2340 | char *t; |
e594a3b1 LP |
2341 | |
2342 | if (from != UINT64_MAX) { | |
2343 | if (from == to || to == UINT64_MAX) | |
2b59bf51 | 2344 | t = strdup(FORMAT_BYTES(from)); |
e594a3b1 | 2345 | else |
fc03e80c | 2346 | t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 | 2347 | } else if (to != UINT64_MAX) |
fc03e80c | 2348 | t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 LP |
2349 | else { |
2350 | *ret = NULL; | |
2351 | return 0; | |
2352 | } | |
2353 | ||
2b59bf51 | 2354 | if (!t) |
e594a3b1 LP |
2355 | return log_oom(); |
2356 | ||
2b59bf51 | 2357 | *ret = t; |
e594a3b1 LP |
2358 | return 1; |
2359 | } | |
2360 | ||
2361 | static const char *partition_label(const Partition *p) { | |
2362 | assert(p); | |
2363 | ||
2364 | if (p->new_label) | |
2365 | return p->new_label; | |
2366 | ||
2367 | if (p->current_label) | |
2368 | return p->current_label; | |
2369 | ||
22e932f4 | 2370 | return gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
2371 | } |
2372 | ||
cc751c75 | 2373 | static int context_dump_partitions(Context *context) { |
e594a3b1 LP |
2374 | _cleanup_(table_unrefp) Table *t = NULL; |
2375 | uint64_t sum_padding = 0, sum_size = 0; | |
e594a3b1 | 2376 | int r; |
bf030f55 DDM |
2377 | const size_t roothash_col = 13, dropin_files_col = 14, split_path_col = 15; |
2378 | bool has_roothash = false, has_dropin_files = false, has_split_path = false; | |
e594a3b1 | 2379 | |
6a01ea4a | 2380 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
2381 | log_info("Empty partition table."); |
2382 | return 0; | |
2383 | } | |
2384 | ||
bf030f55 DDM |
2385 | t = table_new("type", |
2386 | "label", | |
2387 | "uuid", | |
2388 | "file", | |
2389 | "node", | |
2390 | "offset", | |
2391 | "old size", | |
2392 | "raw size", | |
2393 | "size", | |
2394 | "old padding", | |
2395 | "raw padding", | |
2396 | "padding", | |
2397 | "activity", | |
2398 | "roothash", | |
2399 | "drop-in files", | |
2400 | "split path"); | |
e594a3b1 LP |
2401 | if (!t) |
2402 | return log_oom(); | |
2403 | ||
a015fbe7 | 2404 | if (!DEBUG_LOGGING) { |
6a01ea4a | 2405 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 2406 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
bf030f55 DDM |
2407 | (size_t) 8, (size_t) 11, roothash_col, dropin_files_col, |
2408 | split_path_col); | |
a015fbe7 TH |
2409 | else |
2410 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
b5b7879a | 2411 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 9, (size_t) 10, |
bf030f55 DDM |
2412 | (size_t) 12, roothash_col, dropin_files_col, |
2413 | split_path_col); | |
a015fbe7 | 2414 | } |
e594a3b1 | 2415 | |
e594a3b1 | 2416 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
2417 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
2418 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
2419 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
2420 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
2421 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
2422 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
2423 | |
2424 | LIST_FOREACH(partitions, p, context->partitions) { | |
b5b7879a | 2425 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL; |
b7416360 | 2426 | char uuid_buffer[SD_ID128_UUID_STRING_MAX]; |
a015fbe7 | 2427 | const char *label, *activity = NULL; |
e594a3b1 LP |
2428 | |
2429 | if (p->dropped) | |
2430 | continue; | |
2431 | ||
a015fbe7 TH |
2432 | if (p->current_size == UINT64_MAX) |
2433 | activity = "create"; | |
2434 | else if (p->current_size != p->new_size) | |
2435 | activity = "resize"; | |
2436 | ||
e594a3b1 | 2437 | label = partition_label(p); |
cc751c75 | 2438 | partname = p->partno != UINT64_MAX ? fdisk_partname(context->node, p->partno+1) : NULL; |
e594a3b1 LP |
2439 | |
2440 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2441 | if (r < 0) | |
2442 | return r; | |
2443 | ||
2444 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2445 | if (r < 0) | |
2446 | return r; | |
2447 | ||
2448 | if (p->new_size != UINT64_MAX) | |
2449 | sum_size += p->new_size; | |
2450 | if (p->new_padding != UINT64_MAX) | |
2451 | sum_padding += p->new_padding; | |
2452 | ||
b5b7879a DDM |
2453 | if (p->verity == VERITY_HASH) { |
2454 | rh = p->roothash ? hexmem(p->roothash, p->roothash_size) : strdup("TBD"); | |
2455 | if (!rh) | |
2456 | return log_oom(); | |
2457 | } | |
2458 | ||
e594a3b1 LP |
2459 | r = table_add_many( |
2460 | t, | |
22e932f4 | 2461 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type.uuid, uuid_buffer), |
be9ce018 | 2462 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
11749b61 | 2463 | TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid, |
e594a3b1 | 2464 | TABLE_STRING, p->definition_path ? basename(p->definition_path) : "-", TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), |
a015fbe7 | 2465 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2466 | TABLE_UINT64, p->offset, |
a015fbe7 | 2467 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2468 | TABLE_UINT64, p->new_size, |
2469 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2470 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2471 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2472 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
39fc0174 | 2473 | TABLE_STRING, activity ?: "unchanged", |
b5b7879a | 2474 | TABLE_STRING, rh, |
bf030f55 DDM |
2475 | TABLE_STRV, p->drop_in_files, |
2476 | TABLE_STRING, empty_to_null(p->split_path) ?: "-"); | |
e594a3b1 | 2477 | if (r < 0) |
f987a261 | 2478 | return table_log_add_error(r); |
39fc0174 | 2479 | |
b5b7879a | 2480 | has_roothash = has_roothash || !isempty(rh); |
3ab44dbd | 2481 | has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files); |
bf030f55 | 2482 | has_split_path = has_split_path || !isempty(p->split_path); |
e594a3b1 LP |
2483 | } |
2484 | ||
6a01ea4a | 2485 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2486 | const char *a, *b; |
2487 | ||
2b59bf51 ZJS |
2488 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size)); |
2489 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding)); | |
e594a3b1 LP |
2490 | |
2491 | r = table_add_many( | |
2492 | t, | |
2493 | TABLE_EMPTY, | |
2494 | TABLE_EMPTY, | |
2495 | TABLE_EMPTY, | |
2496 | TABLE_EMPTY, | |
2497 | TABLE_EMPTY, | |
2498 | TABLE_EMPTY, | |
2499 | TABLE_EMPTY, | |
a015fbe7 | 2500 | TABLE_EMPTY, |
e594a3b1 LP |
2501 | TABLE_STRING, a, |
2502 | TABLE_EMPTY, | |
a015fbe7 TH |
2503 | TABLE_EMPTY, |
2504 | TABLE_STRING, b, | |
39fc0174 | 2505 | TABLE_EMPTY, |
b5b7879a | 2506 | TABLE_EMPTY, |
bf030f55 | 2507 | TABLE_EMPTY, |
a015fbe7 | 2508 | TABLE_EMPTY); |
e594a3b1 | 2509 | if (r < 0) |
f987a261 | 2510 | return table_log_add_error(r); |
e594a3b1 LP |
2511 | } |
2512 | ||
b5b7879a DDM |
2513 | if (!has_roothash) { |
2514 | r = table_hide_column_from_display(t, roothash_col); | |
2515 | if (r < 0) | |
2516 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2517 | } | |
2518 | ||
3ab44dbd | 2519 | if (!has_dropin_files) { |
39fc0174 RP |
2520 | r = table_hide_column_from_display(t, dropin_files_col); |
2521 | if (r < 0) | |
2522 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2523 | } | |
2524 | ||
bf030f55 DDM |
2525 | if (!has_split_path) { |
2526 | r = table_hide_column_from_display(t, split_path_col); | |
2527 | if (r < 0) | |
2528 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2529 | } | |
2530 | ||
896e678b | 2531 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2532 | } |
2533 | ||
2534 | static void context_bar_char_process_partition( | |
2535 | Context *context, | |
2536 | Partition *bar[], | |
2537 | size_t n, | |
2538 | Partition *p, | |
2539 | size_t *ret_start) { | |
2540 | ||
2541 | uint64_t from, to, total; | |
2542 | size_t x, y; | |
2543 | ||
2544 | assert(context); | |
2545 | assert(bar); | |
2546 | assert(n > 0); | |
2547 | assert(p); | |
2548 | ||
2549 | if (p->dropped) | |
2550 | return; | |
2551 | ||
2552 | assert(p->offset != UINT64_MAX); | |
2553 | assert(p->new_size != UINT64_MAX); | |
2554 | ||
2555 | from = p->offset; | |
2556 | to = from + p->new_size; | |
2557 | ||
d8daed09 TY |
2558 | assert(context->total > 0); |
2559 | total = context->total; | |
e594a3b1 | 2560 | |
d8daed09 TY |
2561 | assert(from <= total); |
2562 | x = from * n / total; | |
e594a3b1 | 2563 | |
d8daed09 TY |
2564 | assert(to <= total); |
2565 | y = to * n / total; | |
e594a3b1 LP |
2566 | |
2567 | assert(x <= y); | |
2568 | assert(y <= n); | |
2569 | ||
2570 | for (size_t i = x; i < y; i++) | |
2571 | bar[i] = p; | |
2572 | ||
2573 | *ret_start = x; | |
2574 | } | |
2575 | ||
2576 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2577 | _cleanup_free_ char *buf = NULL; | |
e594a3b1 LP |
2578 | const char *label; |
2579 | sd_id128_t id; | |
2580 | ||
2581 | /* Tries really hard to find a suitable description for this partition */ | |
2582 | ||
2583 | if (p->definition_path) { | |
2584 | buf = strdup(basename(p->definition_path)); | |
2585 | goto done; | |
2586 | } | |
2587 | ||
2588 | label = partition_label(p); | |
2589 | if (!isempty(label)) { | |
2590 | buf = strdup(label); | |
2591 | goto done; | |
2592 | } | |
2593 | ||
2594 | if (p->partno != UINT64_MAX) { | |
2595 | buf = fdisk_partname(node, p->partno+1); | |
2596 | goto done; | |
2597 | } | |
2598 | ||
11749b61 | 2599 | if (p->new_uuid_is_set) |
e594a3b1 LP |
2600 | id = p->new_uuid; |
2601 | else if (!sd_id128_is_null(p->current_uuid)) | |
2602 | id = p->current_uuid; | |
2603 | else | |
22e932f4 | 2604 | id = p->type.uuid; |
e594a3b1 | 2605 | |
b7416360 | 2606 | buf = strdup(SD_ID128_TO_UUID_STRING(id)); |
e594a3b1 LP |
2607 | |
2608 | done: | |
2609 | if (!buf) | |
2610 | return -ENOMEM; | |
2611 | ||
2612 | *ret = TAKE_PTR(buf); | |
2613 | return 0; | |
2614 | } | |
2615 | ||
cc751c75 | 2616 | static int context_dump_partition_bar(Context *context) { |
e594a3b1 LP |
2617 | _cleanup_free_ Partition **bar = NULL; |
2618 | _cleanup_free_ size_t *start_array = NULL; | |
03677889 | 2619 | Partition *last = NULL; |
e594a3b1 LP |
2620 | bool z = false; |
2621 | size_t c, j = 0; | |
2622 | ||
f391597c | 2623 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2624 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2625 | ||
2626 | bar = new0(Partition*, c); | |
2627 | if (!bar) | |
2628 | return log_oom(); | |
2629 | ||
2630 | start_array = new(size_t, context->n_partitions); | |
2631 | if (!start_array) | |
2632 | return log_oom(); | |
2633 | ||
2634 | LIST_FOREACH(partitions, p, context->partitions) | |
2635 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2636 | ||
2637 | putc(' ', stdout); | |
2638 | ||
2639 | for (size_t i = 0; i < c; i++) { | |
2640 | if (bar[i]) { | |
2641 | if (last != bar[i]) | |
2642 | z = !z; | |
2643 | ||
2644 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2645 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2646 | } else { | |
2647 | fputs(ansi_normal(), stdout); | |
2648 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2649 | } | |
2650 | ||
2651 | last = bar[i]; | |
2652 | } | |
2653 | ||
2654 | fputs(ansi_normal(), stdout); | |
2655 | putc('\n', stdout); | |
2656 | ||
2657 | for (size_t i = 0; i < context->n_partitions; i++) { | |
2658 | _cleanup_free_ char **line = NULL; | |
2659 | ||
2660 | line = new0(char*, c); | |
2661 | if (!line) | |
2662 | return log_oom(); | |
2663 | ||
2664 | j = 0; | |
2665 | LIST_FOREACH(partitions, p, context->partitions) { | |
2666 | _cleanup_free_ char *d = NULL; | |
2667 | j++; | |
2668 | ||
2669 | if (i < context->n_partitions - j) { | |
2670 | ||
2671 | if (line[start_array[j-1]]) { | |
2672 | const char *e; | |
2673 | ||
2674 | /* Upgrade final corner to the right with a branch to the right */ | |
2675 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
2676 | if (e) { | |
2677 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
2678 | if (!d) | |
2679 | return log_oom(); | |
2680 | } | |
2681 | } | |
2682 | ||
2683 | if (!d) { | |
2684 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
2685 | if (!d) | |
2686 | return log_oom(); | |
2687 | } | |
2688 | ||
2689 | } else if (i == context->n_partitions - j) { | |
2690 | _cleanup_free_ char *hint = NULL; | |
2691 | ||
cc751c75 | 2692 | (void) partition_hint(p, context->node, &hint); |
e594a3b1 LP |
2693 | |
2694 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
2695 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
2696 | else | |
2697 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
2698 | ||
2699 | if (!d) | |
2700 | return log_oom(); | |
2701 | } | |
2702 | ||
2703 | if (d) | |
2704 | free_and_replace(line[start_array[j-1]], d); | |
2705 | } | |
2706 | ||
2707 | putc(' ', stdout); | |
2708 | ||
2709 | j = 0; | |
2710 | while (j < c) { | |
2711 | if (line[j]) { | |
2712 | fputs(line[j], stdout); | |
2713 | j += utf8_console_width(line[j]); | |
2714 | } else { | |
2715 | putc(' ', stdout); | |
2716 | j++; | |
2717 | } | |
2718 | } | |
2719 | ||
2720 | putc('\n', stdout); | |
2721 | ||
2722 | for (j = 0; j < c; j++) | |
2723 | free(line[j]); | |
2724 | } | |
2725 | ||
2726 | return 0; | |
2727 | } | |
2728 | ||
b5b7879a DDM |
2729 | static bool context_has_roothash(Context *context) { |
2730 | LIST_FOREACH(partitions, p, context->partitions) | |
2731 | if (p->roothash) | |
2732 | return true; | |
2733 | ||
2734 | return false; | |
2735 | } | |
2736 | ||
cc751c75 | 2737 | static int context_dump(Context *context, bool late) { |
a26d463d DDM |
2738 | int r; |
2739 | ||
2740 | assert(context); | |
a26d463d DDM |
2741 | |
2742 | if (arg_pretty == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2743 | return 0; | |
2744 | ||
b5b7879a DDM |
2745 | /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes |
2746 | * in the output. */ | |
2747 | if (!late && !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2748 | return 0; | |
2749 | ||
2750 | /* If we're not outputting JSON, only dump again after doing all operations if there are any | |
2751 | * roothashes that we need to communicate to the user. */ | |
2752 | if (late && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !context_has_roothash(context)) | |
2753 | return 0; | |
2754 | ||
cc751c75 | 2755 | r = context_dump_partitions(context); |
a26d463d DDM |
2756 | if (r < 0) |
2757 | return r; | |
2758 | ||
b5b7879a DDM |
2759 | /* Make sure we only write the partition bar once, even if we're writing the partition table twice to |
2760 | * communicate roothashes. */ | |
2761 | if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !late) { | |
a26d463d DDM |
2762 | putc('\n', stdout); |
2763 | ||
cc751c75 | 2764 | r = context_dump_partition_bar(context); |
a26d463d DDM |
2765 | if (r < 0) |
2766 | return r; | |
2767 | ||
2768 | putc('\n', stdout); | |
2769 | } | |
2770 | ||
2771 | fflush(stdout); | |
2772 | ||
2773 | return 0; | |
2774 | } | |
2775 | ||
2776 | ||
e594a3b1 | 2777 | static bool context_changed(const Context *context) { |
03677889 | 2778 | assert(context); |
e594a3b1 LP |
2779 | |
2780 | LIST_FOREACH(partitions, p, context->partitions) { | |
2781 | if (p->dropped) | |
2782 | continue; | |
2783 | ||
2784 | if (p->allocated_to_area) | |
2785 | return true; | |
2786 | ||
2787 | if (p->new_size != p->current_size) | |
2788 | return true; | |
2789 | } | |
2790 | ||
2791 | return false; | |
2792 | } | |
2793 | ||
81873a6b | 2794 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
2795 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
2796 | int r; | |
2797 | ||
2798 | assert(context); | |
81873a6b LP |
2799 | assert(offset != UINT64_MAX); |
2800 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
2801 | |
2802 | probe = blkid_new_probe(); | |
2803 | if (!probe) | |
2804 | return log_oom(); | |
2805 | ||
e594a3b1 | 2806 | errno = 0; |
81873a6b | 2807 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 2808 | if (r < 0) |
81873a6b | 2809 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
2810 | |
2811 | errno = 0; | |
2812 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
2813 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
2814 | blkid_probe_enable_partitions(probe, true) < 0 || | |
2815 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 2816 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
2817 | |
2818 | for (;;) { | |
2819 | errno = 0; | |
2820 | r = blkid_do_probe(probe); | |
2821 | if (r < 0) | |
2822 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
2823 | if (r > 0) | |
2824 | break; | |
2825 | ||
2826 | errno = 0; | |
2827 | if (blkid_do_wipe(probe, false) < 0) | |
2828 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
2829 | } | |
2830 | ||
e594a3b1 LP |
2831 | return 0; |
2832 | } | |
2833 | ||
81873a6b LP |
2834 | static int context_wipe_partition(Context *context, Partition *p) { |
2835 | int r; | |
2836 | ||
2837 | assert(context); | |
2838 | assert(p); | |
2839 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
2840 | ||
2841 | assert(p->offset != UINT64_MAX); | |
2842 | assert(p->new_size != UINT64_MAX); | |
2843 | ||
2844 | r = context_wipe_range(context, p->offset, p->new_size); | |
2845 | if (r < 0) | |
2846 | return r; | |
2847 | ||
2848 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
2849 | return 0; | |
2850 | } | |
2851 | ||
2852 | static int context_discard_range( | |
2853 | Context *context, | |
2854 | uint64_t offset, | |
2855 | uint64_t size) { | |
2856 | ||
e594a3b1 LP |
2857 | struct stat st; |
2858 | int fd; | |
2859 | ||
2860 | assert(context); | |
2861 | assert(offset != UINT64_MAX); | |
2862 | assert(size != UINT64_MAX); | |
2863 | ||
2864 | if (size <= 0) | |
2865 | return 0; | |
2866 | ||
a26f4a49 | 2867 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
2868 | |
2869 | if (fstat(fd, &st) < 0) | |
2870 | return -errno; | |
2871 | ||
2872 | if (S_ISREG(st.st_mode)) { | |
2873 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
2874 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2875 | return -EOPNOTSUPP; | |
2876 | ||
2877 | return -errno; | |
2878 | } | |
2879 | ||
2880 | return 1; | |
2881 | } | |
2882 | ||
2883 | if (S_ISBLK(st.st_mode)) { | |
2884 | uint64_t range[2], end; | |
2885 | ||
994b3031 | 2886 | range[0] = round_up_size(offset, context->sector_size); |
e594a3b1 | 2887 | |
55d38014 LP |
2888 | if (offset > UINT64_MAX - size) |
2889 | return -ERANGE; | |
2890 | ||
e594a3b1 LP |
2891 | end = offset + size; |
2892 | if (end <= range[0]) | |
2893 | return 0; | |
2894 | ||
994b3031 | 2895 | range[1] = round_down_size(end - range[0], context->sector_size); |
e594a3b1 LP |
2896 | if (range[1] <= 0) |
2897 | return 0; | |
2898 | ||
2899 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
2900 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
2901 | return -EOPNOTSUPP; | |
2902 | ||
2903 | return -errno; | |
2904 | } | |
2905 | ||
2906 | return 1; | |
2907 | } | |
2908 | ||
2909 | return -EOPNOTSUPP; | |
2910 | } | |
2911 | ||
2912 | static int context_discard_partition(Context *context, Partition *p) { | |
2913 | int r; | |
2914 | ||
2915 | assert(context); | |
2916 | assert(p); | |
2917 | ||
2918 | assert(p->offset != UINT64_MAX); | |
2919 | assert(p->new_size != UINT64_MAX); | |
2920 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
2921 | ||
2922 | if (!arg_discard) | |
2923 | return 0; | |
2924 | ||
2925 | r = context_discard_range(context, p->offset, p->new_size); | |
2926 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 2927 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2928 | return 0; |
2929 | } | |
22163eb5 LP |
2930 | if (r == -EBUSY) { |
2931 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
2932 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
2933 | return 0; | |
2934 | } | |
e594a3b1 LP |
2935 | if (r == 0) { |
2936 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
2937 | return 0; | |
2938 | } | |
2939 | if (r < 0) | |
5b5109e2 | 2940 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2941 | |
5b5109e2 | 2942 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
2943 | return 1; |
2944 | } | |
2945 | ||
2946 | static int context_discard_gap_after(Context *context, Partition *p) { | |
2947 | uint64_t gap, next = UINT64_MAX; | |
e594a3b1 LP |
2948 | int r; |
2949 | ||
2950 | assert(context); | |
2951 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
2952 | ||
5113436b AF |
2953 | if (!arg_discard) |
2954 | return 0; | |
2955 | ||
e594a3b1 LP |
2956 | if (p) |
2957 | gap = p->offset + p->new_size; | |
2958 | else | |
2959 | gap = context->start; | |
2960 | ||
2961 | LIST_FOREACH(partitions, q, context->partitions) { | |
2962 | if (q->dropped) | |
2963 | continue; | |
2964 | ||
2965 | assert(q->offset != UINT64_MAX); | |
2966 | assert(q->new_size != UINT64_MAX); | |
2967 | ||
2968 | if (q->offset < gap) | |
2969 | continue; | |
2970 | ||
2971 | if (next == UINT64_MAX || q->offset < next) | |
2972 | next = q->offset; | |
2973 | } | |
2974 | ||
2975 | if (next == UINT64_MAX) { | |
2976 | next = context->end; | |
2977 | if (gap > next) | |
2978 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
2979 | } | |
2980 | ||
2981 | assert(next >= gap); | |
2982 | r = context_discard_range(context, gap, next - gap); | |
2983 | if (r == -EOPNOTSUPP) { | |
2984 | if (p) | |
5b5109e2 | 2985 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 2986 | else |
5b5109e2 | 2987 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
2988 | return 0; |
2989 | } | |
2990 | if (r == 0) /* Too short */ | |
2991 | return 0; | |
2992 | if (r < 0) { | |
2993 | if (p) | |
2994 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
2995 | else | |
2996 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
2997 | } | |
2998 | ||
2999 | if (p) | |
3000 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
3001 | else | |
3002 | log_info("Successfully discarded gap at beginning of disk."); | |
3003 | ||
3004 | return 0; | |
3005 | } | |
3006 | ||
cc751c75 | 3007 | static int context_wipe_and_discard(Context *context) { |
e594a3b1 LP |
3008 | int r; |
3009 | ||
3010 | assert(context); | |
3011 | ||
3012 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if | |
3013 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
3014 | * device in one go early on. */ | |
3015 | ||
3016 | LIST_FOREACH(partitions, p, context->partitions) { | |
3017 | ||
3018 | if (!p->allocated_to_area) | |
3019 | continue; | |
3020 | ||
8275334b | 3021 | if (partition_defer(p)) |
81d1098b DDM |
3022 | continue; |
3023 | ||
e594a3b1 LP |
3024 | r = context_wipe_partition(context, p); |
3025 | if (r < 0) | |
3026 | return r; | |
3027 | ||
cc751c75 | 3028 | if (!context->from_scratch) { |
f0cb1b95 LP |
3029 | r = context_discard_partition(context, p); |
3030 | if (r < 0) | |
3031 | return r; | |
3032 | ||
e594a3b1 LP |
3033 | r = context_discard_gap_after(context, p); |
3034 | if (r < 0) | |
3035 | return r; | |
3036 | } | |
3037 | } | |
3038 | ||
cc751c75 | 3039 | if (!context->from_scratch) { |
e594a3b1 LP |
3040 | r = context_discard_gap_after(context, NULL); |
3041 | if (r < 0) | |
3042 | return r; | |
3043 | } | |
3044 | ||
3045 | return 0; | |
3046 | } | |
3047 | ||
a64769d6 DDM |
3048 | typedef struct { |
3049 | LoopDevice *loop; | |
3050 | int fd; | |
3051 | char *path; | |
3052 | int whole_fd; | |
3053 | } PartitionTarget; | |
3054 | ||
3055 | static int partition_target_fd(PartitionTarget *t) { | |
3056 | assert(t); | |
3057 | assert(t->loop || t->fd >= 0 || t->whole_fd >= 0); | |
3058 | return t->loop ? t->loop->fd : t->fd >= 0 ? t->fd : t->whole_fd; | |
3059 | } | |
3060 | ||
3061 | static const char* partition_target_path(PartitionTarget *t) { | |
3062 | assert(t); | |
3063 | assert(t->loop || t->path); | |
3064 | return t->loop ? t->loop->node : t->path; | |
3065 | } | |
3066 | ||
3067 | static PartitionTarget *partition_target_free(PartitionTarget *t) { | |
3068 | if (!t) | |
3069 | return NULL; | |
3070 | ||
3071 | loop_device_unref(t->loop); | |
3072 | safe_close(t->fd); | |
3073 | unlink_and_free(t->path); | |
3074 | ||
3075 | return mfree(t); | |
3076 | } | |
3077 | ||
3078 | DEFINE_TRIVIAL_CLEANUP_FUNC(PartitionTarget*, partition_target_free); | |
3079 | ||
d3201eb4 DDM |
3080 | static int prepare_temporary_file(PartitionTarget *t, uint64_t size) { |
3081 | _cleanup_(unlink_and_freep) char *temp = NULL; | |
254d1313 | 3082 | _cleanup_close_ int fd = -EBADF; |
d3201eb4 DDM |
3083 | const char *vt; |
3084 | int r; | |
3085 | ||
3086 | assert(t); | |
3087 | ||
3088 | r = var_tmp_dir(&vt); | |
3089 | if (r < 0) | |
3090 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
3091 | ||
3092 | temp = path_join(vt, "repart-XXXXXX"); | |
3093 | if (!temp) | |
3094 | return log_oom(); | |
3095 | ||
3096 | fd = mkostemp_safe(temp); | |
3097 | if (fd < 0) | |
3098 | return log_error_errno(fd, "Failed to create temporary file: %m"); | |
3099 | ||
3100 | if (ftruncate(fd, size) < 0) | |
3101 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
3102 | FORMAT_BYTES(size)); | |
3103 | ||
3104 | t->fd = TAKE_FD(fd); | |
3105 | t->path = TAKE_PTR(temp); | |
3106 | ||
3107 | return 0; | |
3108 | } | |
3109 | ||
a64769d6 DDM |
3110 | static int partition_target_prepare( |
3111 | Context *context, | |
3112 | Partition *p, | |
3113 | uint64_t size, | |
3114 | bool need_path, | |
3115 | PartitionTarget **ret) { | |
3116 | ||
3117 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; | |
d3201eb4 DDM |
3118 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
3119 | int whole_fd, r; | |
a64769d6 DDM |
3120 | |
3121 | assert(context); | |
3122 | assert(p); | |
3123 | assert(ret); | |
3124 | ||
3125 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3126 | ||
6b1ea55e | 3127 | t = new(PartitionTarget, 1); |
a64769d6 DDM |
3128 | if (!t) |
3129 | return log_oom(); | |
6b1ea55e | 3130 | *t = (PartitionTarget) { |
254d1313 ZJS |
3131 | .fd = -EBADF, |
3132 | .whole_fd = -EBADF, | |
6b1ea55e | 3133 | }; |
a64769d6 | 3134 | |
d3201eb4 DDM |
3135 | if (!need_path) { |
3136 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3137 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
a64769d6 | 3138 | |
d3201eb4 DDM |
3139 | t->whole_fd = whole_fd; |
3140 | *ret = TAKE_PTR(t); | |
3141 | return 0; | |
3142 | } | |
a64769d6 | 3143 | |
d3201eb4 DDM |
3144 | /* Loopback block devices are not only useful to turn regular files into block devices, but |
3145 | * also to cut out sections of block devices into new block devices. */ | |
a64769d6 | 3146 | |
d3201eb4 DDM |
3147 | r = loop_device_make(whole_fd, O_RDWR, p->offset, size, 0, 0, LOCK_EX, &d); |
3148 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
3149 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); | |
3150 | if (r >= 0) { | |
6b1ea55e | 3151 | t->loop = TAKE_PTR(d); |
d3201eb4 DDM |
3152 | *ret = TAKE_PTR(t); |
3153 | return 0; | |
3154 | } | |
a64769d6 | 3155 | |
d3201eb4 DDM |
3156 | /* If we can't allocate a loop device, let's write to a regular file that we copy into the final |
3157 | * image so we can run in containers and without needing root privileges. On filesystems with | |
3158 | * reflinking support, we can take advantage of this and just reflink the result into the image. | |
3159 | */ | |
a64769d6 | 3160 | |
d3201eb4 | 3161 | log_debug_errno(r, "No access to loop devices, falling back to a regular file"); |
a64769d6 | 3162 | |
d3201eb4 DDM |
3163 | r = prepare_temporary_file(t, size); |
3164 | if (r < 0) | |
3165 | return r; | |
a64769d6 DDM |
3166 | |
3167 | *ret = TAKE_PTR(t); | |
3168 | ||
3169 | return 0; | |
3170 | } | |
3171 | ||
3172 | static int partition_target_grow(PartitionTarget *t, uint64_t size) { | |
3173 | int r; | |
3174 | ||
3175 | assert(t); | |
3176 | ||
3177 | if (t->loop) { | |
3178 | r = loop_device_refresh_size(t->loop, UINT64_MAX, size); | |
3179 | if (r < 0) | |
3180 | return log_error_errno(r, "Failed to refresh loopback device size: %m"); | |
3181 | } else if (t->fd >= 0) { | |
3182 | if (ftruncate(t->fd, size) < 0) | |
3183 | return log_error_errno(errno, "Failed to grow '%s' to %s by truncation: %m", | |
3184 | t->path, FORMAT_BYTES(size)); | |
3185 | } | |
3186 | ||
3187 | return 0; | |
3188 | } | |
3189 | ||
3190 | static int partition_target_sync(Context *context, Partition *p, PartitionTarget *t) { | |
3191 | int whole_fd, r; | |
3192 | ||
3193 | assert(context); | |
3194 | assert(p); | |
3195 | assert(t); | |
3196 | ||
3197 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3198 | ||
3199 | if (t->loop) { | |
3200 | r = loop_device_sync(t->loop); | |
3201 | if (r < 0) | |
3202 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3203 | } else if (t->fd >= 0) { | |
3204 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3205 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3206 | ||
3207 | r = copy_bytes(t->fd, whole_fd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_FSYNC); | |
3208 | if (r < 0) | |
3209 | return log_error_errno(r, "Failed to copy bytes to partition: %m"); | |
3210 | } else { | |
3211 | if (fsync(t->whole_fd) < 0) | |
3212 | return log_error_errno(errno, "Failed to sync changes: %m"); | |
3213 | } | |
3214 | ||
3215 | return 0; | |
3216 | } | |
3217 | ||
48a09a8f DDM |
3218 | static int partition_encrypt(Context *context, Partition *p, const char *node) { |
3219 | #if HAVE_LIBCRYPTSETUP && HAVE_CRYPT_SET_DATA_OFFSET && HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE && HAVE_CRYPT_REENCRYPT | |
3220 | struct crypt_params_luks2 luks_params = { | |
922576e4 DDM |
3221 | .label = strempty(ASSERT_PTR(p)->new_label), |
3222 | .sector_size = ASSERT_PTR(context)->sector_size, | |
48a09a8f DDM |
3223 | .data_device = node, |
3224 | }; | |
3225 | struct crypt_params_reencrypt reencrypt_params = { | |
3226 | .mode = CRYPT_REENCRYPT_ENCRYPT, | |
3227 | .direction = CRYPT_REENCRYPT_BACKWARD, | |
3228 | .resilience = "datashift", | |
3229 | .data_shift = LUKS2_METADATA_SIZE / 512, | |
3230 | .luks2 = &luks_params, | |
3231 | .flags = CRYPT_REENCRYPT_INITIALIZE_ONLY|CRYPT_REENCRYPT_MOVE_FIRST_SEGMENT, | |
3232 | }; | |
0d12936d | 3233 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
48a09a8f DDM |
3234 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; |
3235 | _cleanup_fclose_ FILE *h = NULL; | |
3236 | _cleanup_free_ char *hp = NULL; | |
3237 | const char *passphrase = NULL; | |
3238 | size_t passphrase_size = 0; | |
0b75744d | 3239 | const char *vt; |
b9df3536 LP |
3240 | int r; |
3241 | ||
994b3031 | 3242 | assert(context); |
b9df3536 | 3243 | assert(p); |
889914ef LP |
3244 | assert(p->encrypt != ENCRYPT_OFF); |
3245 | ||
0d12936d LP |
3246 | r = dlopen_cryptsetup(); |
3247 | if (r < 0) | |
3248 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
3249 | ||
b9df3536 LP |
3250 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); |
3251 | ||
0b75744d DDM |
3252 | r = var_tmp_dir(&vt); |
3253 | if (r < 0) | |
3254 | return log_error_errno(r, "Failed to determine temporary files directory: %m"); | |
3255 | ||
3256 | r = fopen_temporary_child(vt, &h, &hp); | |
48a09a8f DDM |
3257 | if (r < 0) |
3258 | return log_error_errno(r, "Failed to create temporary LUKS header file: %m"); | |
3259 | ||
3260 | /* Weird cryptsetup requirement which requires the header file to be the size of at least one sector. */ | |
983154f5 | 3261 | r = ftruncate(fileno(h), context->sector_size); |
b9df3536 | 3262 | if (r < 0) |
48a09a8f DDM |
3263 | return log_error_errno(r, "Failed to grow temporary LUKS header file: %m"); |
3264 | ||
3265 | r = sym_crypt_init(&cd, hp); | |
3266 | if (r < 0) | |
3267 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", hp); | |
b9df3536 LP |
3268 | |
3269 | cryptsetup_enable_logging(cd); | |
3270 | ||
48a09a8f DDM |
3271 | /* Disable kernel keyring usage by libcryptsetup as a workaround for |
3272 | * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/273. This makes sure that we can do | |
3273 | * offline encryption even when repart is running in a container. */ | |
3274 | r = sym_crypt_volume_key_keyring(cd, false); | |
3275 | if (r < 0) | |
3276 | return log_error_errno(r, "Failed to disable kernel keyring: %m"); | |
3277 | ||
3278 | r = sym_crypt_metadata_locking(cd, false); | |
3279 | if (r < 0) | |
3280 | return log_error_errno(r, "Failed to disable metadata locking: %m"); | |
3281 | ||
3282 | r = sym_crypt_set_data_offset(cd, LUKS2_METADATA_SIZE / 512); | |
3283 | if (r < 0) | |
3284 | return log_error_errno(r, "Failed to set data offset: %m"); | |
3285 | ||
0d12936d | 3286 | r = sym_crypt_format(cd, |
b9df3536 LP |
3287 | CRYPT_LUKS2, |
3288 | "aes", | |
3289 | "xts-plain64", | |
15cad3a2 | 3290 | SD_ID128_TO_UUID_STRING(p->luks_uuid), |
98e0456e DDM |
3291 | NULL, |
3292 | VOLUME_KEY_SIZE, | |
48a09a8f | 3293 | &luks_params); |
b9df3536 LP |
3294 | if (r < 0) |
3295 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
3296 | ||
889914ef LP |
3297 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
3298 | r = sym_crypt_keyslot_add_by_volume_key( | |
3299 | cd, | |
3300 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3301 | NULL, |
3302 | VOLUME_KEY_SIZE, | |
889914ef LP |
3303 | strempty(arg_key), |
3304 | arg_key_size); | |
3305 | if (r < 0) | |
3306 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
48a09a8f DDM |
3307 | |
3308 | passphrase = strempty(arg_key); | |
3309 | passphrase_size = arg_key_size; | |
889914ef LP |
3310 | } |
3311 | ||
3312 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
3313 | #if HAVE_TPM2 | |
889914ef LP |
3314 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; |
3315 | _cleanup_(erase_and_freep) void *secret = NULL; | |
02ef97cd | 3316 | _cleanup_free_ void *pubkey = NULL; |
889914ef | 3317 | _cleanup_free_ void *blob = NULL, *hash = NULL; |
02ef97cd | 3318 | size_t secret_size, blob_size, hash_size, pubkey_size = 0; |
2b92a672 | 3319 | uint16_t pcr_bank, primary_alg; |
889914ef LP |
3320 | int keyslot; |
3321 | ||
02ef97cd LP |
3322 | if (arg_tpm2_public_key_pcr_mask != 0) { |
3323 | r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey, &pubkey_size); | |
3324 | if (r < 0) { | |
3325 | if (arg_tpm2_public_key || r != -ENOENT) | |
3326 | return log_error_errno(r, "Failed read TPM PCR public key: %m"); | |
3327 | ||
3328 | log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m"); | |
3329 | arg_tpm2_public_key_pcr_mask = 0; | |
3330 | } | |
3331 | } | |
3332 | ||
d9b5841d LP |
3333 | r = tpm2_seal(arg_tpm2_device, |
3334 | arg_tpm2_pcr_mask, | |
02ef97cd LP |
3335 | pubkey, pubkey_size, |
3336 | arg_tpm2_public_key_pcr_mask, | |
d9b5841d LP |
3337 | /* pin= */ NULL, |
3338 | &secret, &secret_size, | |
3339 | &blob, &blob_size, | |
3340 | &hash, &hash_size, | |
3341 | &pcr_bank, | |
3342 | &primary_alg); | |
889914ef LP |
3343 | if (r < 0) |
3344 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
3345 | ||
3346 | r = base64mem(secret, secret_size, &base64_encoded); | |
3347 | if (r < 0) | |
3348 | return log_error_errno(r, "Failed to base64 encode secret key: %m"); | |
3349 | ||
3350 | r = cryptsetup_set_minimal_pbkdf(cd); | |
3351 | if (r < 0) | |
3352 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
3353 | ||
3354 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
3355 | cd, | |
3356 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3357 | NULL, |
3358 | VOLUME_KEY_SIZE, | |
889914ef LP |
3359 | base64_encoded, |
3360 | strlen(base64_encoded)); | |
3361 | if (keyslot < 0) | |
48a09a8f | 3362 | return log_error_errno(keyslot, "Failed to add new TPM2 key: %m"); |
889914ef | 3363 | |
f0f4fcae LP |
3364 | r = tpm2_make_luks2_json( |
3365 | keyslot, | |
3366 | arg_tpm2_pcr_mask, | |
3367 | pcr_bank, | |
02ef97cd LP |
3368 | pubkey, pubkey_size, |
3369 | arg_tpm2_public_key_pcr_mask, | |
f0f4fcae LP |
3370 | primary_alg, |
3371 | blob, blob_size, | |
3372 | hash, hash_size, | |
3373 | 0, | |
3374 | &v); | |
889914ef LP |
3375 | if (r < 0) |
3376 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
3377 | ||
3378 | r = cryptsetup_add_token_json(cd, v); | |
3379 | if (r < 0) | |
3380 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
48a09a8f DDM |
3381 | |
3382 | passphrase = base64_encoded; | |
3383 | passphrase_size = strlen(base64_encoded); | |
889914ef LP |
3384 | #else |
3385 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3386 | "Support for TPM2 enrollment not enabled."); | |
3387 | #endif | |
3388 | } | |
b9df3536 | 3389 | |
48a09a8f | 3390 | r = sym_crypt_reencrypt_init_by_passphrase( |
b9df3536 | 3391 | cd, |
98e0456e | 3392 | NULL, |
48a09a8f DDM |
3393 | passphrase, |
3394 | passphrase_size, | |
3395 | CRYPT_ANY_SLOT, | |
3396 | 0, | |
3397 | sym_crypt_get_cipher(cd), | |
3398 | sym_crypt_get_cipher_mode(cd), | |
3399 | &reencrypt_params); | |
b9df3536 | 3400 | if (r < 0) |
48a09a8f | 3401 | return log_error_errno(r, "Failed to prepare for reencryption: %m"); |
b9df3536 | 3402 | |
48a09a8f DDM |
3403 | /* crypt_reencrypt_init_by_passphrase() doesn't actually put the LUKS header at the front, we have |
3404 | * to do that ourselves. */ | |
b9df3536 | 3405 | |
48a09a8f DDM |
3406 | sym_crypt_free(cd); |
3407 | cd = NULL; | |
b9df3536 | 3408 | |
48a09a8f DDM |
3409 | r = sym_crypt_init(&cd, node); |
3410 | if (r < 0) | |
3411 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); | |
b9df3536 | 3412 | |
48a09a8f DDM |
3413 | r = sym_crypt_header_restore(cd, CRYPT_LUKS2, hp); |
3414 | if (r < 0) | |
3415 | return log_error_errno(r, "Failed to place new LUKS header at head of %s: %m", node); | |
b9df3536 | 3416 | |
48a09a8f | 3417 | reencrypt_params.flags &= ~CRYPT_REENCRYPT_INITIALIZE_ONLY; |
b9df3536 | 3418 | |
48a09a8f DDM |
3419 | r = sym_crypt_reencrypt_init_by_passphrase( |
3420 | cd, | |
3421 | NULL, | |
3422 | passphrase, | |
3423 | passphrase_size, | |
3424 | CRYPT_ANY_SLOT, | |
3425 | 0, | |
3426 | NULL, | |
3427 | NULL, | |
3428 | &reencrypt_params); | |
3429 | if (r < 0) | |
3430 | return log_error_errno(r, "Failed to load reencryption context: %m"); | |
b9df3536 | 3431 | |
48a09a8f | 3432 | r = sym_crypt_reencrypt(cd, NULL); |
b9df3536 | 3433 | if (r < 0) |
48a09a8f DDM |
3434 | return log_error_errno(r, "Failed to encrypt %s: %m", node); |
3435 | ||
3436 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
b9df3536 | 3437 | |
3dd8ae5c | 3438 | return 0; |
48a09a8f DDM |
3439 | #else |
3440 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3441 | "libcryptsetup is not supported or is missing required symbols, cannot encrypt: %m"); | |
3dd8ae5c | 3442 | #endif |
b9df3536 LP |
3443 | } |
3444 | ||
2b392d86 DDM |
3445 | static int partition_format_verity_hash( |
3446 | Context *context, | |
3447 | Partition *p, | |
3448 | const char *data_node) { | |
3449 | ||
3450 | #if HAVE_LIBCRYPTSETUP | |
3451 | Partition *dp; | |
a64769d6 | 3452 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
2b392d86 DDM |
3453 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
3454 | _cleanup_free_ uint8_t *rh = NULL; | |
3455 | size_t rhs; | |
a64769d6 | 3456 | int r; |
2b392d86 DDM |
3457 | |
3458 | assert(context); | |
3459 | assert(p); | |
3460 | assert(data_node); | |
3461 | ||
3462 | if (p->dropped) | |
3463 | return 0; | |
3464 | ||
3465 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3466 | return 0; | |
3467 | ||
3468 | if (p->verity != VERITY_HASH) | |
3469 | return 0; | |
3470 | ||
8275334b | 3471 | if (partition_defer(p)) |
2b392d86 DDM |
3472 | return 0; |
3473 | ||
3474 | assert_se(dp = p->siblings[VERITY_DATA]); | |
3475 | assert(!dp->dropped); | |
3476 | ||
2b392d86 DDM |
3477 | r = dlopen_cryptsetup(); |
3478 | if (r < 0) | |
3479 | return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m"); | |
3480 | ||
a64769d6 | 3481 | r = partition_target_prepare(context, p, p->new_size, /*need_path=*/ true, &t); |
2b392d86 | 3482 | if (r < 0) |
a64769d6 | 3483 | return r; |
2b392d86 | 3484 | |
a64769d6 | 3485 | r = sym_crypt_init(&cd, partition_target_path(t)); |
2b392d86 DDM |
3486 | if (r < 0) |
3487 | return log_error_errno(r, "Failed to allocate libcryptsetup context: %m"); | |
3488 | ||
3489 | r = sym_crypt_format( | |
3490 | cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, | |
3491 | &(struct crypt_params_verity){ | |
3492 | .data_device = data_node, | |
3493 | .flags = CRYPT_VERITY_CREATE_HASH, | |
3494 | .hash_name = "sha256", | |
3495 | .hash_type = 1, | |
3496 | .data_block_size = context->sector_size, | |
3497 | .hash_block_size = context->sector_size, | |
3498 | .salt_size = 32, | |
3499 | }); | |
3500 | if (r < 0) | |
3501 | return log_error_errno(r, "Failed to setup verity hash data: %m"); | |
3502 | ||
a64769d6 DDM |
3503 | r = partition_target_sync(context, p, t); |
3504 | if (r < 0) | |
3505 | return r; | |
3506 | ||
2b392d86 DDM |
3507 | r = sym_crypt_get_volume_key_size(cd); |
3508 | if (r < 0) | |
3509 | return log_error_errno(r, "Failed to determine verity root hash size: %m"); | |
3510 | rhs = (size_t) r; | |
3511 | ||
3512 | rh = malloc(rhs); | |
3513 | if (!rh) | |
3514 | return log_oom(); | |
3515 | ||
3516 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh, &rhs, NULL, 0); | |
3517 | if (r < 0) | |
3518 | return log_error_errno(r, "Failed to get verity root hash: %m"); | |
3519 | ||
3520 | assert(rhs >= sizeof(sd_id128_t) * 2); | |
3521 | ||
3522 | if (!dp->new_uuid_is_set) { | |
3523 | memcpy_safe(dp->new_uuid.bytes, rh, sizeof(sd_id128_t)); | |
3524 | dp->new_uuid_is_set = true; | |
3525 | } | |
3526 | ||
3527 | if (!p->new_uuid_is_set) { | |
3528 | memcpy_safe(p->new_uuid.bytes, rh + rhs - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
3529 | p->new_uuid_is_set = true; | |
3530 | } | |
3531 | ||
3532 | p->roothash = TAKE_PTR(rh); | |
3533 | p->roothash_size = rhs; | |
3534 | ||
3535 | return 0; | |
3536 | #else | |
3537 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes: %m"); | |
3538 | #endif | |
3539 | } | |
3540 | ||
4ecd39c5 DDM |
3541 | static int sign_verity_roothash( |
3542 | const uint8_t *roothash, | |
3543 | size_t roothash_size, | |
3544 | uint8_t **ret_signature, | |
3545 | size_t *ret_signature_size) { | |
3546 | ||
3547 | #if HAVE_OPENSSL | |
3548 | _cleanup_(BIO_freep) BIO *rb = NULL; | |
3549 | _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL; | |
3550 | _cleanup_free_ char *hex = NULL; | |
3551 | _cleanup_free_ uint8_t *sig = NULL; | |
3552 | int sigsz; | |
3553 | ||
3554 | assert(roothash); | |
3555 | assert(roothash_size > 0); | |
3556 | assert(ret_signature); | |
3557 | assert(ret_signature_size); | |
3558 | ||
3559 | hex = hexmem(roothash, roothash_size); | |
3560 | if (!hex) | |
3561 | return log_oom(); | |
3562 | ||
3563 | rb = BIO_new_mem_buf(hex, -1); | |
3564 | if (!rb) | |
3565 | return log_oom(); | |
3566 | ||
3567 | p7 = PKCS7_sign(arg_certificate, arg_private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY); | |
3568 | if (!p7) | |
3569 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s", | |
3570 | ERR_error_string(ERR_get_error(), NULL)); | |
3571 | ||
3572 | sigsz = i2d_PKCS7(p7, &sig); | |
3573 | if (sigsz < 0) | |
3574 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s", | |
3575 | ERR_error_string(ERR_get_error(), NULL)); | |
3576 | ||
3577 | *ret_signature = TAKE_PTR(sig); | |
3578 | *ret_signature_size = sigsz; | |
3579 | ||
3580 | return 0; | |
3581 | #else | |
3582 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot setup verity signature: %m"); | |
3583 | #endif | |
3584 | } | |
3585 | ||
3586 | static int partition_format_verity_sig(Context *context, Partition *p) { | |
3587 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
3588 | _cleanup_free_ uint8_t *sig = NULL; | |
3589 | _cleanup_free_ char *text = NULL; | |
3590 | Partition *hp; | |
3591 | uint8_t fp[X509_FINGERPRINT_SIZE]; | |
3592 | size_t sigsz = 0, padsz; /* avoid false maybe-uninitialized warning */ | |
3593 | int whole_fd, r; | |
3594 | ||
3595 | assert(p->verity == VERITY_SIG); | |
3596 | ||
3597 | if (p->dropped) | |
3598 | return 0; | |
3599 | ||
3600 | if (PARTITION_EXISTS(p)) | |
3601 | return 0; | |
3602 | ||
8275334b | 3603 | if (partition_defer(p)) |
4ecd39c5 DDM |
3604 | return 0; |
3605 | ||
3606 | assert_se(hp = p->siblings[VERITY_HASH]); | |
3607 | assert(!hp->dropped); | |
3608 | ||
3609 | assert(arg_certificate); | |
3610 | ||
3611 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3612 | ||
3613 | r = sign_verity_roothash(hp->roothash, hp->roothash_size, &sig, &sigsz); | |
3614 | if (r < 0) | |
3615 | return r; | |
3616 | ||
3617 | r = x509_fingerprint(arg_certificate, fp); | |
3618 | if (r < 0) | |
3619 | return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m"); | |
3620 | ||
3621 | r = json_build(&v, | |
3622 | JSON_BUILD_OBJECT( | |
3623 | JSON_BUILD_PAIR("rootHash", JSON_BUILD_HEX(hp->roothash, hp->roothash_size)), | |
3624 | JSON_BUILD_PAIR( | |
3625 | "certificateFingerprint", | |
3626 | JSON_BUILD_HEX(fp, sizeof(fp)) | |
3627 | ), | |
3628 | JSON_BUILD_PAIR("signature", JSON_BUILD_BASE64(sig, sigsz)) | |
3629 | ) | |
3630 | ); | |
3631 | if (r < 0) | |
3632 | return log_error_errno(r, "Failed to build JSON object: %m"); | |
3633 | ||
3634 | r = json_variant_format(v, 0, &text); | |
3635 | if (r < 0) | |
3636 | return log_error_errno(r, "Failed to format JSON object: %m"); | |
3637 | ||
3638 | padsz = round_up_size(strlen(text), 4096); | |
3639 | assert_se(padsz <= p->new_size); | |
3640 | ||
3641 | r = strgrowpad0(&text, padsz); | |
3642 | if (r < 0) | |
3643 | return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(padsz)); | |
3644 | ||
3645 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3646 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3647 | ||
3648 | r = loop_write(whole_fd, text, padsz, /*do_poll=*/ false); | |
3649 | if (r < 0) | |
3650 | return log_error_errno(r, "Failed to write verity signature to partition: %m"); | |
3651 | ||
3652 | if (fsync(whole_fd) < 0) | |
3653 | return log_error_errno(errno, "Failed to synchronize verity signature JSON: %m"); | |
3654 | ||
3655 | return 0; | |
3656 | } | |
3657 | ||
757bc2e4 | 3658 | static int context_copy_blocks(Context *context) { |
a64769d6 | 3659 | int r; |
757bc2e4 LP |
3660 | |
3661 | assert(context); | |
3662 | ||
3663 | /* Copy in file systems on the block level */ | |
3664 | ||
3665 | LIST_FOREACH(partitions, p, context->partitions) { | |
a64769d6 | 3666 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
757bc2e4 LP |
3667 | |
3668 | if (p->copy_blocks_fd < 0) | |
3669 | continue; | |
3670 | ||
3671 | if (p->dropped) | |
3672 | continue; | |
3673 | ||
3674 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
3675 | continue; | |
3676 | ||
8275334b | 3677 | if (partition_defer(p)) |
81d1098b DDM |
3678 | continue; |
3679 | ||
757bc2e4 LP |
3680 | assert(p->new_size != UINT64_MAX); |
3681 | assert(p->copy_blocks_size != UINT64_MAX); | |
48a09a8f | 3682 | assert(p->new_size >= p->copy_blocks_size + (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
757bc2e4 | 3683 | |
a64769d6 DDM |
3684 | r = partition_target_prepare(context, p, p->new_size, |
3685 | /*need_path=*/ p->encrypt != ENCRYPT_OFF || p->siblings[VERITY_HASH], | |
3686 | &t); | |
3687 | if (r < 0) | |
3688 | return r; | |
757bc2e4 | 3689 | |
2b59bf51 ZJS |
3690 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", |
3691 | p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno); | |
757bc2e4 | 3692 | |
a64769d6 | 3693 | r = copy_bytes(p->copy_blocks_fd, partition_target_fd(t), p->copy_blocks_size, COPY_REFLINK); |
757bc2e4 LP |
3694 | if (r < 0) |
3695 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
3696 | ||
889914ef | 3697 | if (p->encrypt != ENCRYPT_OFF) { |
a64769d6 | 3698 | r = partition_encrypt(context, p, partition_target_path(t)); |
b9df3536 LP |
3699 | if (r < 0) |
3700 | return r; | |
b9df3536 LP |
3701 | } |
3702 | ||
a64769d6 DDM |
3703 | r = partition_target_sync(context, p, t); |
3704 | if (r < 0) | |
3705 | return r; | |
48a09a8f | 3706 | |
757bc2e4 | 3707 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
2b392d86 DDM |
3708 | |
3709 | if (p->siblings[VERITY_HASH]) { | |
a64769d6 DDM |
3710 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
3711 | partition_target_path(t)); | |
2b392d86 DDM |
3712 | if (r < 0) |
3713 | return r; | |
3714 | } | |
4ecd39c5 DDM |
3715 | |
3716 | if (p->siblings[VERITY_SIG]) { | |
3717 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); | |
3718 | if (r < 0) | |
3719 | return r; | |
3720 | } | |
757bc2e4 LP |
3721 | } |
3722 | ||
3723 | return 0; | |
3724 | } | |
3725 | ||
d2ac7698 DDM |
3726 | static int do_copy_files( |
3727 | Partition *p, | |
3728 | const char *root, | |
3729 | uid_t override_uid, | |
3730 | gid_t override_gid, | |
3731 | const Set *denylist) { | |
e59678b2 | 3732 | |
8a794850 LP |
3733 | int r; |
3734 | ||
3735 | assert(p); | |
92cd7e7c | 3736 | assert(root); |
8a794850 LP |
3737 | |
3738 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
254d1313 | 3739 | _cleanup_close_ int sfd = -EBADF, pfd = -EBADF, tfd = -EBADF; |
8a794850 | 3740 | |
fd1ca01a | 3741 | sfd = chase_symlinks_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL); |
8a794850 LP |
3742 | if (sfd < 0) |
3743 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
3744 | ||
3745 | r = fd_verify_regular(sfd); | |
3746 | if (r < 0) { | |
3747 | if (r != -EISDIR) | |
3748 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
3749 | ||
3750 | /* We are looking at a directory */ | |
fd1ca01a | 3751 | tfd = chase_symlinks_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3752 | if (tfd < 0) { |
f21a3a82 LP |
3753 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3754 | ||
8a794850 LP |
3755 | if (tfd != -ENOENT) |
3756 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
3757 | ||
f21a3a82 LP |
3758 | r = path_extract_filename(*target, &fn); |
3759 | if (r < 0) | |
3760 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3761 | ||
3762 | r = path_extract_directory(*target, &dn); | |
3763 | if (r < 0) | |
3764 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3765 | ||
92cd7e7c | 3766 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3767 | if (r < 0) |
3768 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
3769 | ||
fd1ca01a | 3770 | pfd = chase_symlinks_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 LP |
3771 | if (pfd < 0) |
3772 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
3773 | ||
8a050905 DDM |
3774 | /* Make sure everything is owned by the user running repart so that |
3775 | * make_filesystem() can map the user running repart to "root" in a user | |
3776 | * namespace to have the files owned by root in the final image. */ | |
3777 | ||
652d9040 LP |
3778 | r = copy_tree_at( |
3779 | sfd, ".", | |
6020d00d | 3780 | pfd, fn, |
d2ac7698 | 3781 | override_uid, override_gid, |
336ae0e7 | 3782 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN, |
c0fad2d9 | 3783 | denylist); |
8a794850 | 3784 | } else |
652d9040 LP |
3785 | r = copy_tree_at( |
3786 | sfd, ".", | |
3787 | tfd, ".", | |
d2ac7698 | 3788 | override_uid, override_gid, |
336ae0e7 | 3789 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN, |
c0fad2d9 | 3790 | denylist); |
8a794850 | 3791 | if (r < 0) |
cf2ed23c DDM |
3792 | return log_error_errno(r, "Failed to copy '%s%s' to '%s%s': %m", |
3793 | strempty(arg_root), *source, strempty(root), *target); | |
8a794850 | 3794 | } else { |
f21a3a82 LP |
3795 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
3796 | ||
8a794850 LP |
3797 | /* We are looking at a regular file */ |
3798 | ||
f21a3a82 LP |
3799 | r = path_extract_filename(*target, &fn); |
3800 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
3801 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
3802 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
3803 | if (r < 0) | |
3804 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
3805 | ||
3806 | r = path_extract_directory(*target, &dn); | |
3807 | if (r < 0) | |
3808 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
3809 | ||
92cd7e7c | 3810 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
3811 | if (r < 0) |
3812 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
3813 | ||
fd1ca01a | 3814 | pfd = chase_symlinks_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 3815 | if (pfd < 0) |
a0ff9971 | 3816 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 3817 | |
e2819067 | 3818 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
3819 | if (tfd < 0) |
3820 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
3821 | ||
81427d0f | 3822 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_SIGINT); |
8a794850 | 3823 | if (r < 0) |
554a2b64 | 3824 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 3825 | |
d2ac7698 DDM |
3826 | if (fchown(tfd, override_uid, override_gid) < 0) |
3827 | return log_error_errno(r, "Failed to change ownership of %s", *target); | |
3828 | ||
23e026de | 3829 | (void) copy_xattr(sfd, tfd, COPY_ALL_XATTRS); |
8a794850 LP |
3830 | (void) copy_access(sfd, tfd); |
3831 | (void) copy_times(sfd, tfd, 0); | |
3832 | } | |
3833 | } | |
3834 | ||
3835 | return 0; | |
3836 | } | |
3837 | ||
d2ac7698 | 3838 | static int do_make_directories(Partition *p, uid_t override_uid, gid_t override_gid, const char *root) { |
d83d8048 LP |
3839 | int r; |
3840 | ||
3841 | assert(p); | |
92cd7e7c | 3842 | assert(root); |
d83d8048 LP |
3843 | |
3844 | STRV_FOREACH(d, p->make_directories) { | |
3845 | ||
d2ac7698 | 3846 | r = mkdir_p_root(root, *d, override_uid, override_gid, 0755); |
d83d8048 LP |
3847 | if (r < 0) |
3848 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
3849 | } | |
3850 | ||
3851 | return 0; | |
3852 | } | |
3853 | ||
d3201eb4 DDM |
3854 | static bool partition_needs_populate(Partition *p) { |
3855 | assert(p); | |
3856 | return !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories); | |
3857 | } | |
3858 | ||
e59678b2 | 3859 | static int partition_populate_directory(Partition *p, const Set *denylist, char **ret) { |
95bfd3cd | 3860 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
254d1313 | 3861 | _cleanup_close_ int rfd = -EBADF; |
95bfd3cd DDM |
3862 | int r; |
3863 | ||
e59678b2 | 3864 | assert(ret); |
95bfd3cd | 3865 | |
488bb758 DDM |
3866 | rfd = mkdtemp_open("/var/tmp/repart-XXXXXX", 0, &root); |
3867 | if (rfd < 0) | |
3868 | return log_error_errno(rfd, "Failed to create temporary directory: %m"); | |
95bfd3cd | 3869 | |
488bb758 | 3870 | if (fchmod(rfd, 0755) < 0) |
0b34f351 DDM |
3871 | return log_error_errno(errno, "Failed to change mode of temporary directory: %m"); |
3872 | ||
d2ac7698 | 3873 | r = do_copy_files(p, root, getuid(), getgid(), denylist); |
95bfd3cd DDM |
3874 | if (r < 0) |
3875 | return r; | |
3876 | ||
d2ac7698 | 3877 | r = do_make_directories(p, getuid(), getgid(), root); |
95bfd3cd DDM |
3878 | if (r < 0) |
3879 | return r; | |
3880 | ||
e59678b2 | 3881 | *ret = TAKE_PTR(root); |
95bfd3cd DDM |
3882 | return 0; |
3883 | } | |
3884 | ||
c0fad2d9 | 3885 | static int partition_populate_filesystem(Partition *p, const char *node, const Set *denylist) { |
8a794850 LP |
3886 | int r; |
3887 | ||
3888 | assert(p); | |
3889 | assert(node); | |
3890 | ||
a7f1f7d8 | 3891 | log_info("Populating %s filesystem with files.", p->format); |
8a794850 LP |
3892 | |
3893 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
3894 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
3895 | * detached mount propagation. */ | |
3896 | ||
3897 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
3898 | if (r < 0) | |
3899 | return r; | |
3900 | if (r == 0) { | |
3901 | static const char fs[] = "/run/systemd/mount-root"; | |
3902 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
3903 | ||
3904 | r = mkdir_p(fs, 0700); | |
3905 | if (r < 0) { | |
3906 | log_error_errno(r, "Failed to create mount point: %m"); | |
3907 | _exit(EXIT_FAILURE); | |
3908 | } | |
3909 | ||
511a8cfe | 3910 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
3911 | _exit(EXIT_FAILURE); |
3912 | ||
d2ac7698 | 3913 | if (do_copy_files(p, fs, 0, 0, denylist) < 0) |
8a794850 LP |
3914 | _exit(EXIT_FAILURE); |
3915 | ||
d2ac7698 | 3916 | if (do_make_directories(p, 0, 0, fs) < 0) |
d83d8048 LP |
3917 | _exit(EXIT_FAILURE); |
3918 | ||
8a794850 LP |
3919 | r = syncfs_path(AT_FDCWD, fs); |
3920 | if (r < 0) { | |
3921 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
3922 | _exit(EXIT_FAILURE); | |
3923 | } | |
3924 | ||
3925 | _exit(EXIT_SUCCESS); | |
3926 | } | |
3927 | ||
a7f1f7d8 | 3928 | log_info("Successfully populated %s filesystem with files.", p->format); |
8a794850 LP |
3929 | return 0; |
3930 | } | |
3931 | ||
c0fad2d9 DDM |
3932 | static int make_copy_files_denylist(Context *context, Set **ret) { |
3933 | _cleanup_set_free_ Set *denylist = NULL; | |
3934 | int r; | |
3935 | ||
3936 | assert(context); | |
3937 | assert(ret); | |
3938 | ||
3939 | LIST_FOREACH(partitions, p, context->partitions) { | |
22e932f4 | 3940 | const char *sources = gpt_partition_type_mountpoint_nulstr(p->type); |
c0fad2d9 DDM |
3941 | if (!sources) |
3942 | continue; | |
3943 | ||
3944 | NULSTR_FOREACH(s, sources) { | |
3945 | _cleanup_free_ char *d = NULL; | |
3946 | struct stat st; | |
3947 | ||
3948 | r = chase_symlinks_and_stat(s, arg_root, CHASE_PREFIX_ROOT, NULL, &st, NULL); | |
3949 | if (r == -ENOENT) | |
3950 | continue; | |
3951 | if (r < 0) | |
3952 | return log_error_errno(r, "Failed to stat source file '%s%s': %m", | |
3953 | strempty(arg_root), s); | |
3954 | ||
3955 | if (set_contains(denylist, &st)) | |
3956 | continue; | |
3957 | ||
3958 | d = memdup(&st, sizeof(st)); | |
3959 | if (!d) | |
3960 | return log_oom(); | |
3961 | if (set_ensure_put(&denylist, &inode_hash_ops, d) < 0) | |
3962 | return log_oom(); | |
3963 | ||
3964 | TAKE_PTR(d); | |
3965 | } | |
3966 | } | |
3967 | ||
3968 | *ret = TAKE_PTR(denylist); | |
3969 | return 0; | |
3970 | } | |
3971 | ||
53171c04 | 3972 | static int context_mkfs(Context *context) { |
c0fad2d9 | 3973 | _cleanup_set_free_ Set *denylist = NULL; |
a64769d6 | 3974 | int r; |
53171c04 LP |
3975 | |
3976 | assert(context); | |
3977 | ||
3978 | /* Make a file system */ | |
3979 | ||
c0fad2d9 DDM |
3980 | r = make_copy_files_denylist(context, &denylist); |
3981 | if (r < 0) | |
3982 | return r; | |
3983 | ||
53171c04 | 3984 | LIST_FOREACH(partitions, p, context->partitions) { |
e59678b2 | 3985 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
a64769d6 | 3986 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
53171c04 LP |
3987 | |
3988 | if (p->dropped) | |
3989 | continue; | |
3990 | ||
3991 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3992 | continue; | |
3993 | ||
3994 | if (!p->format) | |
3995 | continue; | |
3996 | ||
c4a87b76 DDM |
3997 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
3998 | if (p->copy_blocks_fd >= 0) | |
3999 | continue; | |
4000 | ||
8275334b | 4001 | if (partition_defer(p)) |
81d1098b DDM |
4002 | continue; |
4003 | ||
53171c04 LP |
4004 | assert(p->offset != UINT64_MAX); |
4005 | assert(p->new_size != UINT64_MAX); | |
48a09a8f | 4006 | assert(p->new_size >= (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
53171c04 | 4007 | |
a64769d6 DDM |
4008 | /* If we're doing encryption, we make sure we keep free space at the end which is required |
4009 | * for cryptsetup's offline encryption. */ | |
4010 | r = partition_target_prepare(context, p, | |
4011 | p->new_size - (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0), | |
4012 | /*need_path=*/ true, | |
4013 | &t); | |
53171c04 | 4014 | if (r < 0) |
a64769d6 | 4015 | return r; |
53171c04 | 4016 | |
53171c04 LP |
4017 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
4018 | ||
d3201eb4 DDM |
4019 | /* If we're not writing to a loop device or if we're populating a read-only filesystem, we |
4020 | * have to populate using the filesystem's mkfs's --root (or equivalent) option. To do that, | |
4021 | * we need to set up the final directory tree beforehand. */ | |
4022 | ||
4023 | if (partition_needs_populate(p) && (!t->loop || fstype_is_ro(p->format))) { | |
4024 | if (!mkfs_supports_root_option(p->format)) | |
4025 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
4026 | "Loop device access is required to populate %s filesystems.", | |
4027 | p->format); | |
95bfd3cd | 4028 | |
e59678b2 | 4029 | r = partition_populate_directory(p, denylist, &root); |
143c3c08 DDM |
4030 | if (r < 0) |
4031 | return r; | |
4032 | } | |
95bfd3cd | 4033 | |
a64769d6 | 4034 | r = make_filesystem(partition_target_path(t), p->format, strempty(p->new_label), root, |
8f30c00c | 4035 | p->fs_uuid, arg_discard, NULL); |
48a09a8f | 4036 | if (r < 0) |
53171c04 LP |
4037 | return r; |
4038 | ||
4039 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
4040 | ||
d3201eb4 DDM |
4041 | /* If we're writing to a loop device, we can now mount the empty filesystem and populate it. */ |
4042 | if (partition_needs_populate(p) && !root) { | |
4043 | assert(t->loop); | |
4044 | ||
4045 | r = partition_populate_filesystem(p, t->loop->node, denylist); | |
48a09a8f | 4046 | if (r < 0) |
143c3c08 | 4047 | return r; |
b9df3536 LP |
4048 | } |
4049 | ||
889914ef | 4050 | if (p->encrypt != ENCRYPT_OFF) { |
a64769d6 | 4051 | r = partition_target_grow(t, p->new_size); |
b9df3536 | 4052 | if (r < 0) |
a64769d6 | 4053 | return r; |
b9df3536 | 4054 | |
a64769d6 | 4055 | r = partition_encrypt(context, p, partition_target_path(t)); |
48a09a8f DDM |
4056 | if (r < 0) |
4057 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
b9df3536 | 4058 | } |
8a794850 | 4059 | |
48a09a8f DDM |
4060 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and |
4061 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
4062 | * the disk. */ | |
4063 | ||
a64769d6 | 4064 | r = partition_target_sync(context, p, t); |
53171c04 | 4065 | if (r < 0) |
a64769d6 | 4066 | return r; |
b5b7879a | 4067 | |
2b392d86 | 4068 | if (p->siblings[VERITY_HASH]) { |
a64769d6 DDM |
4069 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
4070 | partition_target_path(t)); | |
2b392d86 DDM |
4071 | if (r < 0) |
4072 | return r; | |
b5b7879a | 4073 | } |
4ecd39c5 DDM |
4074 | |
4075 | if (p->siblings[VERITY_SIG]) { | |
4076 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); | |
4077 | if (r < 0) | |
4078 | return r; | |
4079 | } | |
b5b7879a DDM |
4080 | } |
4081 | ||
4082 | return 0; | |
4083 | } | |
4084 | ||
b456191d DDM |
4085 | static int parse_x509_certificate(const char *certificate, size_t certificate_size, X509 **ret) { |
4086 | #if HAVE_OPENSSL | |
4087 | _cleanup_(X509_freep) X509 *cert = NULL; | |
4088 | _cleanup_(BIO_freep) BIO *cb = NULL; | |
4089 | ||
4090 | assert(certificate); | |
4091 | assert(certificate_size > 0); | |
4092 | assert(ret); | |
4093 | ||
4094 | cb = BIO_new_mem_buf(certificate, certificate_size); | |
4095 | if (!cb) | |
4096 | return log_oom(); | |
4097 | ||
4098 | cert = PEM_read_bio_X509(cb, NULL, NULL, NULL); | |
4099 | if (!cert) | |
4100 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Failed to parse X.509 certificate: %s", | |
4101 | ERR_error_string(ERR_get_error(), NULL)); | |
4102 | ||
4103 | if (ret) | |
4104 | *ret = TAKE_PTR(cert); | |
4105 | ||
4106 | return 0; | |
4107 | #else | |
4108 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse X509 certificate."); | |
4109 | #endif | |
4110 | } | |
4111 | ||
4112 | static int parse_private_key(const char *key, size_t key_size, EVP_PKEY **ret) { | |
4113 | #if HAVE_OPENSSL | |
4114 | _cleanup_(BIO_freep) BIO *kb = NULL; | |
4115 | _cleanup_(EVP_PKEY_freep) EVP_PKEY *pk = NULL; | |
4116 | ||
4117 | assert(key); | |
4118 | assert(key_size > 0); | |
4119 | assert(ret); | |
4120 | ||
4121 | kb = BIO_new_mem_buf(key, key_size); | |
4122 | if (!kb) | |
4123 | return log_oom(); | |
4124 | ||
4125 | pk = PEM_read_bio_PrivateKey(kb, NULL, NULL, NULL); | |
4126 | if (!pk) | |
4127 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to parse PEM private key: %s", | |
4128 | ERR_error_string(ERR_get_error(), NULL)); | |
4129 | ||
4130 | if (ret) | |
4131 | *ret = TAKE_PTR(pk); | |
4132 | ||
4133 | return 0; | |
4134 | #else | |
4135 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse private key."); | |
4136 | #endif | |
4137 | } | |
4138 | ||
e594a3b1 LP |
4139 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
4140 | struct { | |
4141 | sd_id128_t type_uuid; | |
4142 | uint64_t counter; | |
695cfd53 | 4143 | } _packed_ plaintext = {}; |
e594a3b1 | 4144 | union { |
ade99252 | 4145 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
4146 | sd_id128_t id; |
4147 | } result; | |
4148 | ||
4149 | uint64_t k = 0; | |
e594a3b1 LP |
4150 | int r; |
4151 | ||
4152 | assert(context); | |
4153 | assert(p); | |
4154 | assert(ret); | |
4155 | ||
4156 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
4157 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
4158 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
4159 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
4160 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
4161 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
4162 | * second and later partition of the same type) if we have more than one partition of the same | |
4163 | * time. Or in other words: | |
4164 | * | |
4165 | * With: | |
4166 | * SEED := /etc/machine-id | |
4167 | * | |
4168 | * If first partition instance of type TYPE_UUID: | |
4169 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
4170 | * | |
4171 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
4172 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
4173 | */ | |
4174 | ||
4175 | LIST_FOREACH(partitions, q, context->partitions) { | |
4176 | if (p == q) | |
4177 | break; | |
4178 | ||
22e932f4 | 4179 | if (!sd_id128_equal(p->type.uuid, q->type.uuid)) |
e594a3b1 LP |
4180 | continue; |
4181 | ||
4182 | k++; | |
4183 | } | |
4184 | ||
22e932f4 | 4185 | plaintext.type_uuid = p->type.uuid; |
e594a3b1 LP |
4186 | plaintext.counter = htole64(k); |
4187 | ||
ade99252 KK |
4188 | hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes), |
4189 | &plaintext, | |
4190 | k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
4191 | result.md); | |
e594a3b1 LP |
4192 | |
4193 | /* Take the first half, mark it as v4 UUID */ | |
4194 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
4195 | result.id = id128_make_v4_uuid(result.id); | |
4196 | ||
4197 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
4198 | LIST_FOREACH(partitions, q, context->partitions) { | |
4199 | if (p == q) | |
4200 | continue; | |
4201 | ||
580f48cc | 4202 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 4203 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
4204 | |
4205 | r = sd_id128_randomize(&result.id); | |
4206 | if (r < 0) | |
4207 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
4208 | ||
4209 | break; | |
4210 | } | |
4211 | } | |
4212 | ||
4213 | *ret = result.id; | |
4214 | return 0; | |
4215 | } | |
4216 | ||
4217 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
4218 | _cleanup_free_ char *label = NULL; | |
4219 | const char *prefix; | |
4220 | unsigned k = 1; | |
4221 | ||
4222 | assert(context); | |
4223 | assert(p); | |
4224 | assert(ret); | |
4225 | ||
22e932f4 | 4226 | prefix = gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
4227 | if (!prefix) |
4228 | prefix = "linux"; | |
4229 | ||
4230 | for (;;) { | |
4231 | const char *ll = label ?: prefix; | |
4232 | bool retry = false; | |
e594a3b1 LP |
4233 | |
4234 | LIST_FOREACH(partitions, q, context->partitions) { | |
4235 | if (p == q) | |
4236 | break; | |
4237 | ||
4238 | if (streq_ptr(ll, q->current_label) || | |
4239 | streq_ptr(ll, q->new_label)) { | |
4240 | retry = true; | |
4241 | break; | |
4242 | } | |
4243 | } | |
4244 | ||
4245 | if (!retry) | |
4246 | break; | |
4247 | ||
4248 | label = mfree(label); | |
e594a3b1 LP |
4249 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
4250 | return log_oom(); | |
4251 | } | |
4252 | ||
4253 | if (!label) { | |
4254 | label = strdup(prefix); | |
4255 | if (!label) | |
4256 | return log_oom(); | |
4257 | } | |
4258 | ||
4259 | *ret = TAKE_PTR(label); | |
4260 | return 0; | |
4261 | } | |
4262 | ||
4263 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
e594a3b1 LP |
4264 | int r; |
4265 | ||
4266 | assert(context); | |
4267 | ||
4268 | LIST_FOREACH(partitions, p, context->partitions) { | |
15cad3a2 DDM |
4269 | sd_id128_t uuid; |
4270 | ||
e594a3b1 LP |
4271 | /* Never touch foreign partitions */ |
4272 | if (PARTITION_IS_FOREIGN(p)) { | |
4273 | p->new_uuid = p->current_uuid; | |
4274 | ||
4275 | if (p->current_label) { | |
78eee6ce LP |
4276 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
4277 | if (r < 0) | |
4278 | return r; | |
e594a3b1 LP |
4279 | } |
4280 | ||
4281 | continue; | |
4282 | } | |
4283 | ||
4284 | if (!sd_id128_is_null(p->current_uuid)) | |
15cad3a2 DDM |
4285 | p->new_uuid = uuid = p->current_uuid; /* Never change initialized UUIDs */ |
4286 | else if (p->new_uuid_is_set) | |
4287 | uuid = p->new_uuid; | |
4288 | else { | |
12963533 | 4289 | /* Not explicitly set by user! */ |
15cad3a2 | 4290 | r = partition_acquire_uuid(context, p, &uuid); |
e594a3b1 LP |
4291 | if (r < 0) |
4292 | return r; | |
11749b61 | 4293 | |
15cad3a2 DDM |
4294 | /* The final verity hash/data UUIDs can only be determined after formatting the |
4295 | * verity hash partition. However, we still want to use the generated partition UUID | |
4296 | * to derive other UUIDs to keep things unique and reproducible, so we always | |
4297 | * generate a UUID if none is set, but we only use it as the actual partition UUID if | |
4298 | * verity is not configured. */ | |
4299 | if (!IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) { | |
4300 | p->new_uuid = uuid; | |
4301 | p->new_uuid_is_set = true; | |
4302 | } | |
e594a3b1 LP |
4303 | } |
4304 | ||
8bbbdfd7 DDM |
4305 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", |
4306 | * keyed off the partition UUID. */ | |
15cad3a2 | 4307 | r = derive_uuid(uuid, "file-system-uuid", &p->fs_uuid); |
8bbbdfd7 DDM |
4308 | if (r < 0) |
4309 | return r; | |
4310 | ||
15cad3a2 DDM |
4311 | if (p->encrypt != ENCRYPT_OFF) { |
4312 | r = derive_uuid(uuid, "luks-uuid", &p->luks_uuid); | |
4313 | if (r < 0) | |
4314 | return r; | |
4315 | } | |
4316 | ||
e594a3b1 | 4317 | if (!isempty(p->current_label)) { |
78eee6ce LP |
4318 | /* never change initialized labels */ |
4319 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
4320 | if (r < 0) | |
4321 | return r; | |
12963533 TH |
4322 | } else if (!p->new_label) { |
4323 | /* Not explicitly set by user! */ | |
4324 | ||
e594a3b1 LP |
4325 | r = partition_acquire_label(context, p, &p->new_label); |
4326 | if (r < 0) | |
4327 | return r; | |
4328 | } | |
4329 | } | |
4330 | ||
4331 | return 0; | |
4332 | } | |
4333 | ||
e73309c5 LP |
4334 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
4335 | _cleanup_free_ char *a = NULL; | |
4336 | ||
4337 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
4338 | uint64_t bit = UINT64_C(1) << i; | |
4339 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
4340 | ||
4341 | if (!FLAGS_SET(flags, bit)) | |
4342 | continue; | |
4343 | ||
4344 | xsprintf(buf, "%u", i); | |
4345 | if (!strextend_with_separator(&a, ",", buf)) | |
4346 | return -ENOMEM; | |
4347 | } | |
4348 | ||
4349 | return fdisk_partition_set_attrs(q, a); | |
4350 | } | |
4351 | ||
1c41c1dc LP |
4352 | static uint64_t partition_merge_flags(Partition *p) { |
4353 | uint64_t f; | |
4354 | ||
4355 | assert(p); | |
4356 | ||
4357 | f = p->gpt_flags; | |
4358 | ||
ff0771bf | 4359 | if (p->no_auto >= 0) { |
22e932f4 | 4360 | if (gpt_partition_type_knows_no_auto(p->type)) |
92e72028 | 4361 | SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto); |
ff0771bf | 4362 | else { |
b7416360 | 4363 | char buffer[SD_ID128_UUID_STRING_MAX]; |
ff0771bf LP |
4364 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", |
4365 | yes_no(p->no_auto), | |
22e932f4 | 4366 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
ff0771bf LP |
4367 | } |
4368 | } | |
4369 | ||
1c41c1dc | 4370 | if (p->read_only >= 0) { |
22e932f4 | 4371 | if (gpt_partition_type_knows_read_only(p->type)) |
92e72028 | 4372 | SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only); |
1c41c1dc | 4373 | else { |
b7416360 | 4374 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4375 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", |
4376 | yes_no(p->read_only), | |
22e932f4 | 4377 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4378 | } |
4379 | } | |
4380 | ||
4381 | if (p->growfs >= 0) { | |
22e932f4 | 4382 | if (gpt_partition_type_knows_growfs(p->type)) |
92e72028 | 4383 | SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs); |
1c41c1dc | 4384 | else { |
b7416360 | 4385 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4386 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", |
4387 | yes_no(p->growfs), | |
22e932f4 | 4388 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4389 | } |
4390 | } | |
4391 | ||
4392 | return f; | |
4393 | } | |
4394 | ||
f28d4f42 | 4395 | static int context_mangle_partitions(Context *context) { |
f28d4f42 | 4396 | int r; |
e594a3b1 LP |
4397 | |
4398 | assert(context); | |
4399 | ||
e594a3b1 LP |
4400 | LIST_FOREACH(partitions, p, context->partitions) { |
4401 | if (p->dropped) | |
4402 | continue; | |
4403 | ||
8275334b | 4404 | if (partition_defer(p)) |
81d1098b DDM |
4405 | continue; |
4406 | ||
e594a3b1 LP |
4407 | assert(p->new_size != UINT64_MAX); |
4408 | assert(p->offset != UINT64_MAX); | |
4409 | assert(p->partno != UINT64_MAX); | |
4410 | ||
4411 | if (PARTITION_EXISTS(p)) { | |
4412 | bool changed = false; | |
4413 | ||
4414 | assert(p->current_partition); | |
4415 | ||
4416 | if (p->new_size != p->current_size) { | |
4417 | assert(p->new_size >= p->current_size); | |
994b3031 | 4418 | assert(p->new_size % context->sector_size == 0); |
e594a3b1 LP |
4419 | |
4420 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
4421 | if (r < 0) | |
4422 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4423 | ||
994b3031 | 4424 | r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size); |
e594a3b1 LP |
4425 | if (r < 0) |
4426 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4427 | ||
4428 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
4429 | changed = true; | |
4430 | } | |
4431 | ||
4432 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
b7416360 | 4433 | r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4434 | if (r < 0) |
4435 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4436 | ||
4437 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
4438 | changed = true; | |
4439 | } | |
4440 | ||
4441 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 4442 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
4443 | if (r < 0) |
4444 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4445 | ||
4446 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
4447 | changed = true; | |
4448 | } | |
4449 | ||
4450 | if (changed) { | |
4451 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
4452 | ||
4453 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
4454 | if (r < 0) | |
4455 | return log_error_errno(r, "Failed to update partition: %m"); | |
4456 | } | |
4457 | } else { | |
4458 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
4459 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
e594a3b1 LP |
4460 | |
4461 | assert(!p->new_partition); | |
994b3031 LP |
4462 | assert(p->offset % context->sector_size == 0); |
4463 | assert(p->new_size % context->sector_size == 0); | |
be9ce018 | 4464 | assert(p->new_label); |
e594a3b1 LP |
4465 | |
4466 | t = fdisk_new_parttype(); | |
4467 | if (!t) | |
4468 | return log_oom(); | |
4469 | ||
22e932f4 | 4470 | r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type.uuid)); |
e594a3b1 LP |
4471 | if (r < 0) |
4472 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
4473 | ||
4474 | q = fdisk_new_partition(); | |
4475 | if (!q) | |
4476 | return log_oom(); | |
4477 | ||
4478 | r = fdisk_partition_set_type(q, t); | |
4479 | if (r < 0) | |
4480 | return log_error_errno(r, "Failed to set partition type: %m"); | |
4481 | ||
4482 | r = fdisk_partition_size_explicit(q, true); | |
4483 | if (r < 0) | |
4484 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4485 | ||
994b3031 | 4486 | r = fdisk_partition_set_start(q, p->offset / context->sector_size); |
e594a3b1 LP |
4487 | if (r < 0) |
4488 | return log_error_errno(r, "Failed to position partition: %m"); | |
4489 | ||
994b3031 | 4490 | r = fdisk_partition_set_size(q, p->new_size / context->sector_size); |
e594a3b1 LP |
4491 | if (r < 0) |
4492 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4493 | ||
4494 | r = fdisk_partition_set_partno(q, p->partno); | |
4495 | if (r < 0) | |
4496 | return log_error_errno(r, "Failed to set partition number: %m"); | |
4497 | ||
b7416360 | 4498 | r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4499 | if (r < 0) |
4500 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4501 | ||
be9ce018 | 4502 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
4503 | if (r < 0) |
4504 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4505 | ||
ff0771bf | 4506 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 4507 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
4508 | if (r < 0) |
4509 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
4510 | ||
5b5109e2 | 4511 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
4512 | |
4513 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
4514 | if (r < 0) | |
4515 | return log_error_errno(r, "Failed to add partition: %m"); | |
4516 | ||
4517 | assert(!p->new_partition); | |
4518 | p->new_partition = TAKE_PTR(q); | |
4519 | } | |
4520 | } | |
4521 | ||
f28d4f42 LP |
4522 | return 0; |
4523 | } | |
4524 | ||
62108348 | 4525 | static int split_name_printf(Partition *p, char **ret) { |
4cee8333 DDM |
4526 | assert(p); |
4527 | ||
4528 | const Specifier table[] = { | |
22e932f4 DDM |
4529 | { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type.uuid) }, |
4530 | { 'T', specifier_id128, &p->type.uuid }, | |
4cee8333 DDM |
4531 | { 'U', specifier_id128, &p->new_uuid }, |
4532 | { 'n', specifier_uint64, &p->partno }, | |
4533 | ||
4534 | COMMON_SYSTEM_SPECIFIERS, | |
4535 | {} | |
4536 | }; | |
4537 | ||
62108348 | 4538 | return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, ret); |
4cee8333 DDM |
4539 | } |
4540 | ||
62108348 DDM |
4541 | static int split_node(const char *node, char **ret_base, char **ret_ext) { |
4542 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
4543 | char *e; | |
4544 | int r; | |
4545 | ||
4546 | assert(node); | |
4547 | assert(ret_base); | |
4548 | assert(ret_ext); | |
4549 | ||
4550 | r = path_extract_filename(node, &base); | |
4551 | if (r == O_DIRECTORY || r == -EADDRNOTAVAIL) | |
4552 | return log_error_errno(r, "Device node %s cannot be a directory", node); | |
4553 | if (r < 0) | |
4554 | return log_error_errno(r, "Failed to extract filename from %s: %m", node); | |
4555 | ||
4556 | e = endswith(base, ".raw"); | |
4557 | if (e) { | |
4558 | ext = strdup(e); | |
4559 | if (!ext) | |
4560 | return log_oom(); | |
4561 | ||
4562 | *e = 0; | |
4563 | } | |
4564 | ||
4565 | *ret_base = TAKE_PTR(base); | |
4566 | *ret_ext = TAKE_PTR(ext); | |
4567 | ||
4568 | return 0; | |
4cee8333 DDM |
4569 | } |
4570 | ||
4571 | static int split_name_resolve(Context *context) { | |
62108348 | 4572 | _cleanup_free_ char *parent = NULL, *base = NULL, *ext = NULL; |
4cee8333 DDM |
4573 | int r; |
4574 | ||
62108348 | 4575 | assert(context); |
62108348 | 4576 | |
cc751c75 | 4577 | r = path_extract_directory(context->node, &parent); |
62108348 | 4578 | if (r < 0 && r != -EDESTADDRREQ) |
cc751c75 | 4579 | return log_error_errno(r, "Failed to extract directory from %s: %m", context->node); |
62108348 | 4580 | |
cc751c75 | 4581 | r = split_node(context->node, &base, &ext); |
62108348 DDM |
4582 | if (r < 0) |
4583 | return r; | |
4584 | ||
4cee8333 | 4585 | LIST_FOREACH(partitions, p, context->partitions) { |
62108348 DDM |
4586 | _cleanup_free_ char *resolved = NULL; |
4587 | ||
4cee8333 DDM |
4588 | if (p->dropped) |
4589 | continue; | |
4590 | ||
4591 | if (!p->split_name_format) | |
4592 | continue; | |
4593 | ||
62108348 | 4594 | r = split_name_printf(p, &resolved); |
4cee8333 DDM |
4595 | if (r < 0) |
4596 | return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format); | |
62108348 DDM |
4597 | |
4598 | if (parent) | |
4599 | p->split_path = strjoin(parent, "/", base, ".", resolved, ext); | |
4600 | else | |
4601 | p->split_path = strjoin(base, ".", resolved, ext); | |
4602 | if (!p->split_path) | |
4603 | return log_oom(); | |
4cee8333 DDM |
4604 | } |
4605 | ||
4606 | LIST_FOREACH(partitions, p, context->partitions) { | |
62108348 | 4607 | if (!p->split_path) |
4cee8333 DDM |
4608 | continue; |
4609 | ||
4610 | LIST_FOREACH(partitions, q, context->partitions) { | |
4611 | if (p == q) | |
4612 | continue; | |
4613 | ||
62108348 | 4614 | if (!q->split_path) |
4cee8333 DDM |
4615 | continue; |
4616 | ||
62108348 | 4617 | if (!streq(p->split_path, q->split_path)) |
4cee8333 DDM |
4618 | continue; |
4619 | ||
4620 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
4621 | "%s and %s have the same resolved split name \"%s\", refusing", | |
62108348 | 4622 | p->definition_path, q->definition_path, p->split_path); |
4cee8333 DDM |
4623 | } |
4624 | } | |
4625 | ||
4626 | return 0; | |
4627 | } | |
4628 | ||
4cee8333 | 4629 | static int context_split(Context *context) { |
254d1313 | 4630 | int fd = -EBADF, r; |
4cee8333 DDM |
4631 | |
4632 | if (!arg_split) | |
4633 | return 0; | |
4634 | ||
4635 | assert(context); | |
4cee8333 DDM |
4636 | |
4637 | /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled | |
4638 | * in after they've been generated. */ | |
4639 | ||
4640 | r = split_name_resolve(context); | |
4641 | if (r < 0) | |
4642 | return r; | |
4643 | ||
4cee8333 | 4644 | LIST_FOREACH(partitions, p, context->partitions) { |
254d1313 | 4645 | _cleanup_close_ int fdt = -EBADF; |
4cee8333 DDM |
4646 | |
4647 | if (p->dropped) | |
4648 | continue; | |
4649 | ||
62108348 | 4650 | if (!p->split_path) |
4cee8333 DDM |
4651 | continue; |
4652 | ||
8275334b | 4653 | if (partition_defer(p)) |
81d1098b DDM |
4654 | continue; |
4655 | ||
62108348 | 4656 | fdt = open(p->split_path, O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL, 0666); |
4cee8333 | 4657 | if (fdt < 0) |
62108348 | 4658 | return log_error_errno(fdt, "Failed to open split partition file %s: %m", p->split_path); |
4cee8333 DDM |
4659 | |
4660 | if (fd < 0) | |
4661 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
4662 | ||
4663 | if (lseek(fd, p->offset, SEEK_SET) < 0) | |
4664 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
4665 | ||
a673b056 | 4666 | r = copy_bytes(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES); |
4cee8333 | 4667 | if (r < 0) |
62108348 | 4668 | return log_error_errno(r, "Failed to copy to split partition %s: %m", p->split_path); |
4cee8333 DDM |
4669 | } |
4670 | ||
4671 | return 0; | |
4672 | } | |
4673 | ||
cc751c75 | 4674 | static int context_write_partition_table(Context *context) { |
f28d4f42 LP |
4675 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; |
4676 | int capable, r; | |
4677 | ||
4678 | assert(context); | |
4679 | ||
cc751c75 | 4680 | if (!context->from_scratch && !context_changed(context)) { |
f28d4f42 LP |
4681 | log_info("No changes."); |
4682 | return 0; | |
4683 | } | |
4684 | ||
4685 | if (arg_dry_run) { | |
4686 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
4687 | return 0; | |
4688 | } | |
4689 | ||
4690 | log_info("Applying changes."); | |
4691 | ||
cc751c75 | 4692 | if (context->from_scratch) { |
81873a6b LP |
4693 | r = context_wipe_range(context, 0, context->total); |
4694 | if (r < 0) | |
4695 | return r; | |
4696 | ||
4697 | log_info("Wiped block device."); | |
4698 | ||
0dce448b LB |
4699 | if (arg_discard) { |
4700 | r = context_discard_range(context, 0, context->total); | |
4701 | if (r == -EOPNOTSUPP) | |
4702 | log_info("Storage does not support discard, not discarding entire block device data."); | |
4703 | else if (r < 0) | |
4704 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
4705 | else if (r > 0) | |
4706 | log_info("Discarded entire block device."); | |
4707 | } | |
f28d4f42 LP |
4708 | } |
4709 | ||
4710 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
4711 | if (r < 0) | |
4712 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
4713 | ||
4714 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
4715 | * gaps between partitions, just to be sure. */ | |
cc751c75 | 4716 | r = context_wipe_and_discard(context); |
f28d4f42 LP |
4717 | if (r < 0) |
4718 | return r; | |
4719 | ||
4720 | r = context_copy_blocks(context); | |
4721 | if (r < 0) | |
4722 | return r; | |
4723 | ||
4724 | r = context_mkfs(context); | |
4725 | if (r < 0) | |
4726 | return r; | |
4727 | ||
4728 | r = context_mangle_partitions(context); | |
4729 | if (r < 0) | |
4730 | return r; | |
4731 | ||
e594a3b1 LP |
4732 | log_info("Writing new partition table."); |
4733 | ||
4734 | r = fdisk_write_disklabel(context->fdisk_context); | |
4735 | if (r < 0) | |
4736 | return log_error_errno(r, "Failed to write partition table: %m"); | |
4737 | ||
911ba624 | 4738 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
4739 | if (capable == -ENOTBLK) |
4740 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
4741 | else if (capable < 0) | |
911ba624 | 4742 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 4743 | else if (capable > 0) { |
e594a3b1 LP |
4744 | log_info("Telling kernel to reread partition table."); |
4745 | ||
cc751c75 | 4746 | if (context->from_scratch) |
e594a3b1 LP |
4747 | r = fdisk_reread_partition_table(context->fdisk_context); |
4748 | else | |
4749 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
4750 | if (r < 0) | |
4751 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
4752 | } else | |
4753 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
4754 | ||
4755 | log_info("All done."); | |
4756 | ||
4757 | return 0; | |
4758 | } | |
4759 | ||
4760 | static int context_read_seed(Context *context, const char *root) { | |
4761 | int r; | |
4762 | ||
4763 | assert(context); | |
4764 | ||
4765 | if (!sd_id128_is_null(context->seed)) | |
4766 | return 0; | |
4767 | ||
4768 | if (!arg_randomize) { | |
254d1313 | 4769 | _cleanup_close_ int fd = -EBADF; |
e594a3b1 LP |
4770 | |
4771 | fd = chase_symlinks_and_open("/etc/machine-id", root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC, NULL); | |
4772 | if (fd == -ENOENT) | |
4773 | log_info("No machine ID set, using randomized partition UUIDs."); | |
4774 | else if (fd < 0) | |
4775 | return log_error_errno(fd, "Failed to determine machine ID of image: %m"); | |
4776 | else { | |
057bf780 YW |
4777 | r = id128_read_fd(fd, ID128_FORMAT_PLAIN, &context->seed); |
4778 | if (IN_SET(r, -ENOMEDIUM, -ENOPKG)) | |
e594a3b1 LP |
4779 | log_info("No machine ID set, using randomized partition UUIDs."); |
4780 | else if (r < 0) | |
4781 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
4782 | ||
4783 | return 0; | |
4784 | } | |
4785 | } | |
4786 | ||
4787 | r = sd_id128_randomize(&context->seed); | |
4788 | if (r < 0) | |
4789 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
4790 | ||
4791 | return 0; | |
4792 | } | |
4793 | ||
cc751c75 | 4794 | static int context_factory_reset(Context *context) { |
e594a3b1 LP |
4795 | size_t n = 0; |
4796 | int r; | |
4797 | ||
4798 | assert(context); | |
4799 | ||
4800 | if (arg_factory_reset <= 0) | |
4801 | return 0; | |
4802 | ||
cc751c75 | 4803 | if (context->from_scratch) /* Nothing to reset if we start from scratch */ |
e594a3b1 LP |
4804 | return 0; |
4805 | ||
4806 | if (arg_dry_run) { | |
4807 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
4808 | return 0; | |
4809 | } | |
4810 | ||
4811 | log_info("Applying factory reset."); | |
4812 | ||
4813 | LIST_FOREACH(partitions, p, context->partitions) { | |
4814 | ||
4815 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
4816 | continue; | |
4817 | ||
4818 | assert(p->partno != UINT64_MAX); | |
4819 | ||
4820 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
4821 | ||
4822 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
4823 | if (r < 0) | |
4824 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
4825 | ||
4826 | n++; | |
4827 | } | |
4828 | ||
4829 | if (n == 0) { | |
4830 | log_info("Factory reset requested, but no partitions to delete found."); | |
4831 | return 0; | |
4832 | } | |
4833 | ||
4834 | r = fdisk_write_disklabel(context->fdisk_context); | |
4835 | if (r < 0) | |
4836 | return log_error_errno(r, "Failed to write disk label: %m"); | |
4837 | ||
4838 | log_info("Successfully deleted %zu partitions.", n); | |
4839 | return 1; | |
4840 | } | |
4841 | ||
4842 | static int context_can_factory_reset(Context *context) { | |
e594a3b1 LP |
4843 | assert(context); |
4844 | ||
4845 | LIST_FOREACH(partitions, p, context->partitions) | |
4846 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
4847 | return true; | |
4848 | ||
4849 | return false; | |
4850 | } | |
4851 | ||
5c08da58 LP |
4852 | static int resolve_copy_blocks_auto_candidate( |
4853 | dev_t partition_devno, | |
22e932f4 | 4854 | GptPartitionType partition_type, |
5c08da58 LP |
4855 | dev_t restrict_devno, |
4856 | sd_id128_t *ret_uuid) { | |
4857 | ||
4858 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
254d1313 | 4859 | _cleanup_close_ int fd = -EBADF; |
ca822829 YW |
4860 | _cleanup_free_ char *p = NULL; |
4861 | const char *pttype, *t; | |
5c08da58 LP |
4862 | sd_id128_t pt_parsed, u; |
4863 | blkid_partition pp; | |
4864 | dev_t whole_devno; | |
4865 | blkid_partlist pl; | |
5c08da58 LP |
4866 | int r; |
4867 | ||
4868 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
4869 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
4870 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
4871 | * one of the two. */ | |
4872 | ||
4873 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
4874 | if (r < 0) | |
4875 | return log_error_errno( | |
4876 | r, | |
4877 | "Unable to determine containing block device of partition %u:%u: %m", | |
4878 | major(partition_devno), minor(partition_devno)); | |
4879 | ||
4880 | if (restrict_devno != (dev_t) -1 && | |
4881 | restrict_devno != whole_devno) | |
4882 | return log_error_errno( | |
4883 | SYNTHETIC_ERRNO(EPERM), | |
4884 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
4885 | major(partition_devno), minor(partition_devno), | |
4886 | major(restrict_devno), minor(restrict_devno)); | |
4887 | ||
ca822829 | 4888 | fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p); |
5c08da58 | 4889 | if (r < 0) |
ca822829 YW |
4890 | return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m", |
4891 | DEVNUM_FORMAT_VAL(whole_devno)); | |
5c08da58 LP |
4892 | |
4893 | b = blkid_new_probe(); | |
4894 | if (!b) | |
4895 | return log_oom(); | |
4896 | ||
4897 | errno = 0; | |
4898 | r = blkid_probe_set_device(b, fd, 0, 0); | |
4899 | if (r != 0) | |
4900 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
4901 | ||
4902 | (void) blkid_probe_enable_partitions(b, 1); | |
4903 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
4904 | ||
4905 | errno = 0; | |
4906 | r = blkid_do_safeprobe(b); | |
2e3944b8 LP |
4907 | if (r == _BLKID_SAFEPROBE_ERROR) |
4908 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
4909 | if (IN_SET(r, _BLKID_SAFEPROBE_AMBIGUOUS, _BLKID_SAFEPROBE_NOT_FOUND)) { | |
5c08da58 LP |
4910 | log_debug("Didn't find partition table on block device '%s'.", p); |
4911 | return false; | |
4912 | } | |
2e3944b8 LP |
4913 | |
4914 | assert(r == _BLKID_SAFEPROBE_FOUND); | |
5c08da58 LP |
4915 | |
4916 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
4917 | if (!streq_ptr(pttype, "gpt")) { | |
4918 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
4919 | return false; | |
4920 | } | |
4921 | ||
4922 | errno = 0; | |
4923 | pl = blkid_probe_get_partitions(b); | |
4924 | if (!pl) | |
4925 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
5c08da58 LP |
4926 | |
4927 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
4928 | if (!pp) { | |
4929 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
4930 | major(partition_devno), minor(partition_devno), p); | |
4931 | return false; | |
4932 | } | |
4933 | ||
4934 | t = blkid_partition_get_type_string(pp); | |
4935 | if (isempty(t)) { | |
4936 | log_debug("Partition %u:%u has no type on '%s'.", | |
4937 | major(partition_devno), minor(partition_devno), p); | |
4938 | return false; | |
4939 | } | |
4940 | ||
4941 | r = sd_id128_from_string(t, &pt_parsed); | |
4942 | if (r < 0) { | |
4943 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
4944 | return false; | |
4945 | } | |
4946 | ||
22e932f4 | 4947 | if (!sd_id128_equal(pt_parsed, partition_type.uuid)) { |
5c08da58 LP |
4948 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", |
4949 | major(partition_devno), minor(partition_devno), | |
22e932f4 | 4950 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type.uuid)); |
5c08da58 LP |
4951 | return false; |
4952 | } | |
4953 | ||
e3b9a5ff LP |
4954 | r = blkid_partition_get_uuid_id128(pp, &u); |
4955 | if (r == -ENXIO) { | |
4956 | log_debug_errno(r, "Partition " DEVNUM_FORMAT_STR " has no UUID.", DEVNUM_FORMAT_VAL(partition_devno)); | |
5c08da58 LP |
4957 | return false; |
4958 | } | |
5c08da58 | 4959 | if (r < 0) { |
e3b9a5ff | 4960 | log_debug_errno(r, "Failed to read partition UUID of " DEVNUM_FORMAT_STR ": %m", DEVNUM_FORMAT_VAL(partition_devno)); |
5c08da58 LP |
4961 | return false; |
4962 | } | |
4963 | ||
e3b9a5ff LP |
4964 | log_debug("Automatically found partition " DEVNUM_FORMAT_STR " of right type " SD_ID128_FORMAT_STR ".", |
4965 | DEVNUM_FORMAT_VAL(partition_devno), | |
5c08da58 LP |
4966 | SD_ID128_FORMAT_VAL(pt_parsed)); |
4967 | ||
4968 | if (ret_uuid) | |
4969 | *ret_uuid = u; | |
4970 | ||
4971 | return true; | |
4972 | } | |
4973 | ||
4974 | static int find_backing_devno( | |
4975 | const char *path, | |
4976 | const char *root, | |
4977 | dev_t *ret) { | |
4978 | ||
4979 | _cleanup_free_ char *resolved = NULL; | |
4980 | int r; | |
4981 | ||
4982 | assert(path); | |
4983 | ||
4984 | r = chase_symlinks(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); | |
4985 | if (r < 0) | |
4986 | return r; | |
4987 | ||
4988 | r = path_is_mount_point(resolved, NULL, 0); | |
4989 | if (r < 0) | |
4990 | return r; | |
4991 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
4992 | return -ENOENT; | |
4993 | ||
4994 | r = get_block_device(resolved, ret); | |
4995 | if (r < 0) | |
4996 | return r; | |
4997 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
4998 | return -ENOENT; | |
4999 | ||
5000 | return 0; | |
5001 | } | |
5002 | ||
5003 | static int resolve_copy_blocks_auto( | |
22e932f4 | 5004 | GptPartitionType type, |
5c08da58 LP |
5005 | const char *root, |
5006 | dev_t restrict_devno, | |
1a037ba2 | 5007 | dev_t *ret_devno, |
5c08da58 LP |
5008 | sd_id128_t *ret_uuid) { |
5009 | ||
5010 | const char *try1 = NULL, *try2 = NULL; | |
5011 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
5012 | _cleanup_(closedirp) DIR *d = NULL; | |
5013 | sd_id128_t found_uuid = SD_ID128_NULL; | |
5014 | dev_t devno, found = 0; | |
5015 | int r; | |
5016 | ||
5c08da58 LP |
5017 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the |
5018 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
5019 | * and restrict block device references in the --image= case to loopback block device we set up. | |
5020 | * | |
5021 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
5022 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
5023 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
5024 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
5025 | ||
5026 | if (restrict_devno == 0) | |
5027 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5028 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
5029 | ||
5030 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching | |
5031 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
5032 | * type matches. */ | |
5033 | ||
22e932f4 | 5034 | if (type.designator == PARTITION_ROOT) |
5c08da58 | 5035 | try1 = "/"; |
22e932f4 | 5036 | else if (type.designator == PARTITION_USR) |
5c08da58 | 5037 | try1 = "/usr/"; |
22e932f4 | 5038 | else if (type.designator == PARTITION_ROOT_VERITY) |
5c08da58 | 5039 | try1 = "/"; |
22e932f4 | 5040 | else if (type.designator == PARTITION_USR_VERITY) |
5c08da58 | 5041 | try1 = "/usr/"; |
22e932f4 | 5042 | else if (type.designator == PARTITION_ESP) { |
5c08da58 LP |
5043 | try1 = "/efi/"; |
5044 | try2 = "/boot/"; | |
22e932f4 | 5045 | } else if (type.designator == PARTITION_XBOOTLDR) |
5c08da58 LP |
5046 | try1 = "/boot/"; |
5047 | else | |
5048 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
5049 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
22e932f4 | 5050 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5051 | |
5052 | r = find_backing_devno(try1, root, &devno); | |
5053 | if (r == -ENOENT && try2) | |
5054 | r = find_backing_devno(try2, root, &devno); | |
5055 | if (r < 0) | |
5056 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
22e932f4 | 5057 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5058 | |
5059 | xsprintf_sys_block_path(p, "/slaves", devno); | |
5060 | d = opendir(p); | |
5061 | if (d) { | |
5062 | struct dirent *de; | |
5063 | ||
5064 | for (;;) { | |
5065 | _cleanup_free_ char *q = NULL, *t = NULL; | |
5066 | sd_id128_t u; | |
5067 | dev_t sl; | |
5068 | ||
5069 | errno = 0; | |
5070 | de = readdir_no_dot(d); | |
5071 | if (!de) { | |
5072 | if (errno != 0) | |
5073 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
5074 | ||
5075 | break; | |
5076 | } | |
5077 | ||
5078 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
5079 | continue; | |
5080 | ||
5081 | q = path_join(p, de->d_name, "/dev"); | |
5082 | if (!q) | |
5083 | return log_oom(); | |
5084 | ||
5085 | r = read_one_line_file(q, &t); | |
5086 | if (r < 0) | |
5087 | return log_error_errno(r, "Failed to read %s: %m", q); | |
5088 | ||
7176f06c | 5089 | r = parse_devnum(t, &sl); |
5c08da58 LP |
5090 | if (r < 0) { |
5091 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
5092 | continue; | |
5093 | } | |
5094 | if (major(sl) == 0) { | |
5095 | log_debug_errno(r, "Device backing %s is special, ignoring: %m", q); | |
5096 | continue; | |
5097 | } | |
5098 | ||
22e932f4 | 5099 | r = resolve_copy_blocks_auto_candidate(sl, type, restrict_devno, &u); |
5c08da58 LP |
5100 | if (r < 0) |
5101 | return r; | |
5102 | if (r > 0) { | |
5103 | /* We found a matching one! */ | |
5104 | if (found != 0) | |
5105 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
5106 | "Multiple matching partitions found, refusing."); | |
5107 | ||
5108 | found = sl; | |
5109 | found_uuid = u; | |
5110 | } | |
5111 | } | |
5112 | } else if (errno != ENOENT) | |
5113 | return log_error_errno(errno, "Failed open %s: %m", p); | |
5114 | else { | |
22e932f4 | 5115 | r = resolve_copy_blocks_auto_candidate(devno, type, restrict_devno, &found_uuid); |
5c08da58 LP |
5116 | if (r < 0) |
5117 | return r; | |
5118 | if (r > 0) | |
5119 | found = devno; | |
5120 | } | |
5121 | ||
5122 | if (found == 0) | |
5123 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
5124 | "Unable to automatically discover suitable partition to copy blocks from."); | |
5125 | ||
1a037ba2 YW |
5126 | if (ret_devno) |
5127 | *ret_devno = found; | |
5c08da58 LP |
5128 | |
5129 | if (ret_uuid) | |
5130 | *ret_uuid = found_uuid; | |
5131 | ||
5132 | return 0; | |
5133 | } | |
5134 | ||
5135 | static int context_open_copy_block_paths( | |
5136 | Context *context, | |
5c08da58 LP |
5137 | dev_t restrict_devno) { |
5138 | ||
757bc2e4 LP |
5139 | int r; |
5140 | ||
5141 | assert(context); | |
5142 | ||
5143 | LIST_FOREACH(partitions, p, context->partitions) { | |
254d1313 | 5144 | _cleanup_close_ int source_fd = -EBADF; |
5c08da58 LP |
5145 | _cleanup_free_ char *opened = NULL; |
5146 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
5147 | uint64_t size; |
5148 | struct stat st; | |
5149 | ||
5150 | assert(p->copy_blocks_fd < 0); | |
5151 | assert(p->copy_blocks_size == UINT64_MAX); | |
5152 | ||
5153 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
5154 | continue; | |
5155 | ||
5c08da58 | 5156 | if (p->copy_blocks_path) { |
757bc2e4 | 5157 | |
585c5c75 | 5158 | source_fd = chase_symlinks_and_open(p->copy_blocks_path, p->copy_blocks_root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
5c08da58 LP |
5159 | if (source_fd < 0) |
5160 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 5161 | |
5c08da58 LP |
5162 | if (fstat(source_fd, &st) < 0) |
5163 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
5164 | ||
5165 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
5166 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5167 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
5168 | ||
5169 | } else if (p->copy_blocks_auto) { | |
1a037ba2 | 5170 | dev_t devno; |
5c08da58 | 5171 | |
22e932f4 | 5172 | r = resolve_copy_blocks_auto(p->type, p->copy_blocks_root, restrict_devno, &devno, &uuid); |
5c08da58 LP |
5173 | if (r < 0) |
5174 | return r; | |
5175 | ||
ca822829 | 5176 | source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
1a037ba2 | 5177 | if (r < 0) |
ca822829 YW |
5178 | return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m", |
5179 | DEVNUM_FORMAT_VAL(devno)); | |
5c08da58 LP |
5180 | |
5181 | if (fstat(source_fd, &st) < 0) | |
5182 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
1a037ba2 | 5183 | } else |
5c08da58 | 5184 | continue; |
757bc2e4 LP |
5185 | |
5186 | if (S_ISDIR(st.st_mode)) { | |
ca822829 YW |
5187 | _cleanup_free_ char *bdev = NULL; |
5188 | dev_t devt; | |
757bc2e4 LP |
5189 | |
5190 | /* If the file is a directory, automatically find the backing block device */ | |
5191 | ||
5192 | if (major(st.st_dev) != 0) | |
ca822829 | 5193 | devt = st.st_dev; |
757bc2e4 | 5194 | else { |
757bc2e4 | 5195 | /* Special support for btrfs */ |
757bc2e4 | 5196 | r = btrfs_get_block_device_fd(source_fd, &devt); |
67f0ac8c | 5197 | if (r == -EUCLEAN) |
5c08da58 | 5198 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 5199 | if (r < 0) |
5c08da58 | 5200 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 | 5201 | } |
757bc2e4 LP |
5202 | |
5203 | safe_close(source_fd); | |
5204 | ||
ca822829 YW |
5205 | source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev); |
5206 | if (r < 0) | |
5207 | return log_error_errno(r, "Failed to open block device backing '%s': %m", opened); | |
757bc2e4 LP |
5208 | |
5209 | if (fstat(source_fd, &st) < 0) | |
5210 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
757bc2e4 LP |
5211 | } |
5212 | ||
5213 | if (S_ISREG(st.st_mode)) | |
5214 | size = st.st_size; | |
5215 | else if (S_ISBLK(st.st_mode)) { | |
5216 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
5217 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
5218 | } else | |
5c08da58 | 5219 | 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 |
5220 | |
5221 | if (size <= 0) | |
5c08da58 | 5222 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 5223 | if (size % 512 != 0) |
5c08da58 | 5224 | 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 |
5225 | |
5226 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
5227 | p->copy_blocks_size = size; | |
5c08da58 LP |
5228 | |
5229 | free_and_replace(p->copy_blocks_path, opened); | |
5230 | ||
5231 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
11749b61 | 5232 | if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) { |
5c08da58 | 5233 | p->new_uuid = uuid; |
11749b61 DDM |
5234 | p->new_uuid_is_set = true; |
5235 | } | |
757bc2e4 LP |
5236 | } |
5237 | ||
5238 | return 0; | |
5239 | } | |
5240 | ||
c4a87b76 DDM |
5241 | static int fd_apparent_size(int fd, uint64_t *ret) { |
5242 | off_t initial = 0; | |
5243 | uint64_t size = 0; | |
5244 | ||
5245 | assert(fd >= 0); | |
5246 | assert(ret); | |
5247 | ||
5248 | initial = lseek(fd, 0, SEEK_CUR); | |
5249 | if (initial < 0) | |
5250 | return log_error_errno(errno, "Failed to get file offset: %m"); | |
5251 | ||
5252 | for (off_t off = 0;;) { | |
5253 | off_t r; | |
5254 | ||
5255 | r = lseek(fd, off, SEEK_DATA); | |
5256 | if (r < 0 && errno == ENXIO) | |
5257 | /* If errno == ENXIO, that means we've reached the final hole of the file and | |
5258 | * that hole isn't followed by more data. */ | |
5259 | break; | |
5260 | if (r < 0) | |
5261 | return log_error_errno(errno, "Failed to seek data in file from offset %"PRIi64": %m", off); | |
5262 | ||
5263 | off = r; /* Set the offset to the start of the data segment. */ | |
5264 | ||
5265 | /* After copying a potential hole, find the end of the data segment by looking for | |
5266 | * the next hole. If we get ENXIO, we're at EOF. */ | |
5267 | r = lseek(fd, off, SEEK_HOLE); | |
5268 | if (r < 0) { | |
5269 | if (errno == ENXIO) | |
5270 | break; | |
5271 | return log_error_errno(errno, "Failed to seek hole in file from offset %"PRIi64": %m", off); | |
5272 | } | |
5273 | ||
5274 | size += r - off; | |
5275 | off = r; | |
5276 | } | |
5277 | ||
5278 | if (lseek(fd, initial, SEEK_SET) < 0) | |
5279 | return log_error_errno(errno, "Failed to reset file offset: %m"); | |
5280 | ||
5281 | *ret = size; | |
5282 | ||
5283 | return 0; | |
5284 | } | |
5285 | ||
5286 | static int context_minimize(Context *context) { | |
5287 | _cleanup_set_free_ Set *denylist = NULL; | |
5288 | const char *vt; | |
5289 | int r; | |
5290 | ||
5291 | assert(context); | |
5292 | ||
5293 | r = make_copy_files_denylist(context, &denylist); | |
5294 | if (r < 0) | |
5295 | return r; | |
5296 | ||
5297 | r = var_tmp_dir(&vt); | |
5298 | if (r < 0) | |
5299 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
5300 | ||
5301 | LIST_FOREACH(partitions, p, context->partitions) { | |
e59678b2 | 5302 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
c4a87b76 | 5303 | _cleanup_(unlink_and_freep) char *temp = NULL; |
d3201eb4 | 5304 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
254d1313 | 5305 | _cleanup_close_ int fd = -EBADF; |
c4a87b76 DDM |
5306 | sd_id128_t fs_uuid; |
5307 | uint64_t fsz; | |
5308 | ||
5309 | if (p->dropped) | |
5310 | continue; | |
5311 | ||
5312 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
5313 | continue; | |
5314 | ||
5315 | if (!p->format) | |
5316 | continue; | |
5317 | ||
5c33b686 | 5318 | if (p->minimize == MINIMIZE_OFF) |
c4a87b76 DDM |
5319 | continue; |
5320 | ||
d3201eb4 DDM |
5321 | if (!partition_needs_populate(p)) |
5322 | continue; | |
5323 | ||
c4a87b76 DDM |
5324 | assert(!p->copy_blocks_path); |
5325 | ||
5326 | r = tempfn_random_child(vt, "repart", &temp); | |
5327 | if (r < 0) | |
5328 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
5329 | ||
59e2be46 DDM |
5330 | if (fstype_is_ro(p->format)) |
5331 | fs_uuid = p->fs_uuid; | |
5332 | else { | |
c4a87b76 DDM |
5333 | fd = open(temp, O_CREAT|O_EXCL|O_CLOEXEC|O_RDWR|O_NOCTTY, 0600); |
5334 | if (fd < 0) | |
5335 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
5336 | ||
5337 | /* This may seem huge but it will be created sparse so it doesn't take up any space | |
d3201eb4 | 5338 | * on disk until written to. */ |
c4a87b76 DDM |
5339 | if (ftruncate(fd, 1024ULL * 1024ULL * 1024ULL * 1024ULL) < 0) |
5340 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
5341 | FORMAT_BYTES(1024ULL * 1024ULL * 1024ULL * 1024ULL)); | |
5342 | ||
d3201eb4 DDM |
5343 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, 0, 0, LOCK_EX, &d); |
5344 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
5345 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5346 | ||
c4a87b76 DDM |
5347 | /* We're going to populate this filesystem twice so use a random UUID the first time |
5348 | * to avoid UUID conflicts. */ | |
5349 | r = sd_id128_randomize(&fs_uuid); | |
5350 | if (r < 0) | |
5351 | return r; | |
59e2be46 DDM |
5352 | } |
5353 | ||
d3201eb4 DDM |
5354 | if (!d || fstype_is_ro(p->format)) { |
5355 | if (!mkfs_supports_root_option(p->format)) | |
5356 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
5357 | "Loop device access is required to populate %s filesystems", | |
5358 | p->format); | |
5359 | ||
e59678b2 | 5360 | r = partition_populate_directory(p, denylist, &root); |
c4a87b76 DDM |
5361 | if (r < 0) |
5362 | return r; | |
c4a87b76 DDM |
5363 | } |
5364 | ||
8f30c00c | 5365 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, fs_uuid, arg_discard, NULL); |
c4a87b76 DDM |
5366 | if (r < 0) |
5367 | return r; | |
5368 | ||
5369 | /* Read-only filesystems are minimal from the first try because they create and size the | |
5370 | * loopback file for us. */ | |
5371 | if (fstype_is_ro(p->format)) { | |
5372 | p->copy_blocks_path = TAKE_PTR(temp); | |
7d07030e | 5373 | p->copy_blocks_path_is_our_file = true; |
c4a87b76 DDM |
5374 | continue; |
5375 | } | |
5376 | ||
d3201eb4 DDM |
5377 | if (!root) { |
5378 | assert(d); | |
5379 | ||
5380 | r = partition_populate_filesystem(p, d->node, denylist); | |
59e2be46 DDM |
5381 | if (r < 0) |
5382 | return r; | |
5383 | } | |
c4a87b76 DDM |
5384 | |
5385 | /* Other filesystems need to be provided with a pre-sized loopback file and will adapt to | |
5386 | * fully occupy it. Because we gave the filesystem a 1T sparse file, we need to shrink the | |
5387 | * filesystem down to a reasonable size again to fit it in the disk image. While there are | |
5388 | * some filesystems that support shrinking, it doesn't always work properly (e.g. shrinking | |
5389 | * btrfs gives us a 2.0G filesystem regardless of what we put in it). Instead, let's populate | |
5390 | * the filesystem again, but this time, instead of providing the filesystem with a 1T sparse | |
5391 | * loopback file, let's size the loopback file based on the actual data used by the | |
5392 | * filesystem in the sparse file after the first attempt. This should be a good guess of the | |
5393 | * minimal amount of space needed in the filesystem to fit all the required data. | |
5394 | */ | |
5395 | r = fd_apparent_size(fd, &fsz); | |
5396 | if (r < 0) | |
5397 | return r; | |
5398 | ||
5399 | /* Massage the size a bit because just going by actual data used in the sparse file isn't | |
5400 | * fool-proof. */ | |
5401 | fsz = round_up_size(fsz + (fsz / 2), context->grain_size); | |
5402 | if (minimal_size_by_fs_name(p->format) != UINT64_MAX) | |
5403 | fsz = MAX(minimal_size_by_fs_name(p->format), fsz); | |
5404 | ||
d3201eb4 DDM |
5405 | d = loop_device_unref(d); |
5406 | ||
c4a87b76 DDM |
5407 | /* Erase the previous filesystem first. */ |
5408 | if (ftruncate(fd, 0)) | |
5409 | return log_error_errno(errno, "Failed to erase temporary file: %m"); | |
5410 | ||
5411 | if (ftruncate(fd, fsz)) | |
5412 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", FORMAT_BYTES(fsz)); | |
5413 | ||
d3201eb4 DDM |
5414 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, 0, 0, LOCK_EX, &d); |
5415 | if (r < 0 && r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)) | |
5416 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5417 | ||
8f30c00c | 5418 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, p->fs_uuid, arg_discard, NULL); |
c4a87b76 DDM |
5419 | if (r < 0) |
5420 | return r; | |
5421 | ||
d3201eb4 DDM |
5422 | if (!root) { |
5423 | assert(d); | |
5424 | ||
5425 | r = partition_populate_filesystem(p, d->node, denylist); | |
59e2be46 DDM |
5426 | if (r < 0) |
5427 | return r; | |
5428 | } | |
c4a87b76 DDM |
5429 | |
5430 | p->copy_blocks_path = TAKE_PTR(temp); | |
7d07030e | 5431 | p->copy_blocks_path_is_our_file = true; |
c4a87b76 DDM |
5432 | } |
5433 | ||
5434 | return 0; | |
5435 | } | |
5436 | ||
220780db | 5437 | static int parse_partition_types(const char *p, sd_id128_t **partitions, size_t *n_partitions) { |
81d1098b DDM |
5438 | int r; |
5439 | ||
220780db DDM |
5440 | assert(partitions); |
5441 | assert(n_partitions); | |
5442 | ||
81d1098b DDM |
5443 | for (;;) { |
5444 | _cleanup_free_ char *name = NULL; | |
5445 | GptPartitionType type; | |
5446 | ||
5447 | r = extract_first_word(&p, &name, ",", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
5448 | if (r == 0) | |
5449 | break; | |
5450 | if (r < 0) | |
766f52f2 | 5451 | return log_error_errno(r, "Failed to extract partition type identifier or GUID: %s", p); |
81d1098b DDM |
5452 | |
5453 | r = gpt_partition_type_from_string(name, &type); | |
5454 | if (r < 0) | |
766f52f2 | 5455 | return log_error_errno(r, "'%s' is not a valid partition type identifier or GUID", name); |
81d1098b | 5456 | |
220780db | 5457 | if (!GREEDY_REALLOC(*partitions, *n_partitions + 1)) |
81d1098b DDM |
5458 | return log_oom(); |
5459 | ||
220780db | 5460 | (*partitions)[(*n_partitions)++] = type.uuid; |
81d1098b DDM |
5461 | } |
5462 | ||
5463 | return 0; | |
5464 | } | |
5465 | ||
e594a3b1 LP |
5466 | static int help(void) { |
5467 | _cleanup_free_ char *link = NULL; | |
5468 | int r; | |
5469 | ||
5470 | r = terminal_urlify_man("systemd-repart", "1", &link); | |
5471 | if (r < 0) | |
5472 | return log_oom(); | |
5473 | ||
5474 | printf("%s [OPTIONS...] [DEVICE]\n" | |
5475 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
5476 | " -h --help Show this help\n" | |
5477 | " --version Show package version\n" | |
896e678b LP |
5478 | " --no-pager Do not pipe output into a pager\n" |
5479 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 5480 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
5481 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
5482 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 5483 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 5484 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
5485 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
5486 | " them\n" | |
5487 | " --can-factory-reset Test whether factory reset is defined\n" | |
5488 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 5489 | " --image=PATH Operate relative to image file\n" |
9d252fbb | 5490 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 5491 | " --key-file=PATH Key to use when encrypting partitions\n" |
b456191d DDM |
5492 | " --private-key=PATH Private key to use when generating verity roothash\n" |
5493 | " signatures\n" | |
5494 | " --certificate=PATH PEM certificate to use when generating verity\n" | |
5495 | " roothash signatures\n" | |
889914ef | 5496 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 5497 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 5498 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
02ef97cd LP |
5499 | " --tpm2-public-key=PATH\n" |
5500 | " Enroll signed TPM2 PCR policy against PEM public key\n" | |
5501 | " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n" | |
5502 | " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n" | |
e594a3b1 | 5503 | " --seed=UUID 128bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 5504 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 5505 | " --json=pretty|short|off\n" |
de8231b0 | 5506 | " Generate JSON output\n" |
4cee8333 | 5507 | " --split=BOOL Whether to generate split artifacts\n" |
81d1098b | 5508 | " --include-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 5509 | " Ignore partitions not of the specified types\n" |
81d1098b | 5510 | " --exclude-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 5511 | " Ignore partitions of the specified types\n" |
8275334b | 5512 | " --defer-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 DDM |
5513 | " Take partitions of the specified types into account\n" |
5514 | " but don't populate them yet\n" | |
bc556335 DDM |
5515 | "\nSee the %s for details.\n", |
5516 | program_invocation_short_name, | |
5517 | ansi_highlight(), | |
5518 | ansi_normal(), | |
5519 | link); | |
e594a3b1 LP |
5520 | |
5521 | return 0; | |
5522 | } | |
5523 | ||
5524 | static int parse_argv(int argc, char *argv[]) { | |
5525 | ||
5526 | enum { | |
5527 | ARG_VERSION = 0x100, | |
896e678b LP |
5528 | ARG_NO_PAGER, |
5529 | ARG_NO_LEGEND, | |
e594a3b1 LP |
5530 | ARG_DRY_RUN, |
5531 | ARG_EMPTY, | |
5532 | ARG_DISCARD, | |
5533 | ARG_FACTORY_RESET, | |
5534 | ARG_CAN_FACTORY_RESET, | |
5535 | ARG_ROOT, | |
252d6267 | 5536 | ARG_IMAGE, |
e594a3b1 LP |
5537 | ARG_SEED, |
5538 | ARG_PRETTY, | |
5539 | ARG_DEFINITIONS, | |
a26f4a49 | 5540 | ARG_SIZE, |
a015fbe7 | 5541 | ARG_JSON, |
b9df3536 | 5542 | ARG_KEY_FILE, |
b456191d DDM |
5543 | ARG_PRIVATE_KEY, |
5544 | ARG_CERTIFICATE, | |
889914ef LP |
5545 | ARG_TPM2_DEVICE, |
5546 | ARG_TPM2_PCRS, | |
02ef97cd LP |
5547 | ARG_TPM2_PUBLIC_KEY, |
5548 | ARG_TPM2_PUBLIC_KEY_PCRS, | |
4cee8333 | 5549 | ARG_SPLIT, |
81d1098b DDM |
5550 | ARG_INCLUDE_PARTITIONS, |
5551 | ARG_EXCLUDE_PARTITIONS, | |
8275334b | 5552 | ARG_DEFER_PARTITIONS, |
e594a3b1 LP |
5553 | }; |
5554 | ||
5555 | static const struct option options[] = { | |
02ef97cd LP |
5556 | { "help", no_argument, NULL, 'h' }, |
5557 | { "version", no_argument, NULL, ARG_VERSION }, | |
5558 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
5559 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
5560 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, | |
5561 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
5562 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
5563 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
5564 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
5565 | { "root", required_argument, NULL, ARG_ROOT }, | |
5566 | { "image", required_argument, NULL, ARG_IMAGE }, | |
5567 | { "seed", required_argument, NULL, ARG_SEED }, | |
5568 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
5569 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
5570 | { "size", required_argument, NULL, ARG_SIZE }, | |
5571 | { "json", required_argument, NULL, ARG_JSON }, | |
5572 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, | |
b456191d DDM |
5573 | { "private-key", required_argument, NULL, ARG_PRIVATE_KEY }, |
5574 | { "certificate", required_argument, NULL, ARG_CERTIFICATE }, | |
02ef97cd LP |
5575 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
5576 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
5577 | { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY }, | |
5578 | { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS }, | |
4cee8333 | 5579 | { "split", required_argument, NULL, ARG_SPLIT }, |
81d1098b DDM |
5580 | { "include-partitions", required_argument, NULL, ARG_INCLUDE_PARTITIONS }, |
5581 | { "exclude-partitions", required_argument, NULL, ARG_EXCLUDE_PARTITIONS }, | |
8275334b | 5582 | { "defer-partitions", required_argument, NULL, ARG_DEFER_PARTITIONS }, |
e594a3b1 LP |
5583 | {} |
5584 | }; | |
5585 | ||
a26f4a49 | 5586 | int c, r, dry_run = -1; |
e594a3b1 LP |
5587 | |
5588 | assert(argc >= 0); | |
5589 | assert(argv); | |
5590 | ||
5591 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
5592 | ||
5593 | switch (c) { | |
5594 | ||
5595 | case 'h': | |
5596 | return help(); | |
5597 | ||
5598 | case ARG_VERSION: | |
5599 | return version(); | |
5600 | ||
896e678b LP |
5601 | case ARG_NO_PAGER: |
5602 | arg_pager_flags |= PAGER_DISABLE; | |
5603 | break; | |
5604 | ||
5605 | case ARG_NO_LEGEND: | |
5606 | arg_legend = false; | |
5607 | break; | |
5608 | ||
e594a3b1 | 5609 | case ARG_DRY_RUN: |
599c7c54 | 5610 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 5611 | if (r < 0) |
599c7c54 | 5612 | return r; |
e594a3b1 LP |
5613 | break; |
5614 | ||
5615 | case ARG_EMPTY: | |
5616 | if (isempty(optarg) || streq(optarg, "refuse")) | |
5617 | arg_empty = EMPTY_REFUSE; | |
5618 | else if (streq(optarg, "allow")) | |
5619 | arg_empty = EMPTY_ALLOW; | |
5620 | else if (streq(optarg, "require")) | |
5621 | arg_empty = EMPTY_REQUIRE; | |
5622 | else if (streq(optarg, "force")) | |
5623 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
5624 | else if (streq(optarg, "create")) { |
5625 | arg_empty = EMPTY_CREATE; | |
5626 | ||
5627 | if (dry_run < 0) | |
5628 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
5629 | * anew. After all we cannot really break anyone's | |
5630 | * partition tables that way. */ | |
5631 | } else | |
e594a3b1 LP |
5632 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5633 | "Failed to parse --empty= parameter: %s", optarg); | |
5634 | break; | |
5635 | ||
5636 | case ARG_DISCARD: | |
599c7c54 | 5637 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 5638 | if (r < 0) |
599c7c54 | 5639 | return r; |
e594a3b1 LP |
5640 | break; |
5641 | ||
5642 | case ARG_FACTORY_RESET: | |
c3470872 | 5643 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 5644 | if (r < 0) |
c3470872 | 5645 | return r; |
e594a3b1 LP |
5646 | arg_factory_reset = r; |
5647 | break; | |
5648 | ||
5649 | case ARG_CAN_FACTORY_RESET: | |
5650 | arg_can_factory_reset = true; | |
5651 | break; | |
5652 | ||
5653 | case ARG_ROOT: | |
252d6267 LP |
5654 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
5655 | if (r < 0) | |
5656 | return r; | |
5657 | break; | |
5658 | ||
5659 | case ARG_IMAGE: | |
5660 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
5661 | if (r < 0) |
5662 | return r; | |
5663 | break; | |
5664 | ||
5665 | case ARG_SEED: | |
5666 | if (isempty(optarg)) { | |
5667 | arg_seed = SD_ID128_NULL; | |
5668 | arg_randomize = false; | |
5669 | } else if (streq(optarg, "random")) | |
5670 | arg_randomize = true; | |
5671 | else { | |
5672 | r = sd_id128_from_string(optarg, &arg_seed); | |
5673 | if (r < 0) | |
5674 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
5675 | ||
5676 | arg_randomize = false; | |
5677 | } | |
5678 | ||
5679 | break; | |
5680 | ||
5681 | case ARG_PRETTY: | |
c3470872 | 5682 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 5683 | if (r < 0) |
c3470872 | 5684 | return r; |
e594a3b1 LP |
5685 | arg_pretty = r; |
5686 | break; | |
5687 | ||
224c853f RP |
5688 | case ARG_DEFINITIONS: { |
5689 | _cleanup_free_ char *path = NULL; | |
5690 | r = parse_path_argument(optarg, false, &path); | |
e594a3b1 LP |
5691 | if (r < 0) |
5692 | return r; | |
224c853f RP |
5693 | if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0) |
5694 | return log_oom(); | |
e594a3b1 | 5695 | break; |
224c853f | 5696 | } |
e594a3b1 | 5697 | |
a26f4a49 LP |
5698 | case ARG_SIZE: { |
5699 | uint64_t parsed, rounded; | |
5700 | ||
170c9823 LP |
5701 | if (streq(optarg, "auto")) { |
5702 | arg_size = UINT64_MAX; | |
5703 | arg_size_auto = true; | |
5704 | break; | |
5705 | } | |
5706 | ||
a26f4a49 LP |
5707 | r = parse_size(optarg, 1024, &parsed); |
5708 | if (r < 0) | |
5709 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
5710 | ||
5711 | rounded = round_up_size(parsed, 4096); | |
5712 | if (rounded == 0) | |
5713 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
5714 | if (rounded == UINT64_MAX) | |
5715 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
5716 | ||
5717 | if (rounded != parsed) | |
e2341b6b DT |
5718 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")", |
5719 | parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded); | |
a26f4a49 LP |
5720 | |
5721 | arg_size = rounded; | |
170c9823 | 5722 | arg_size_auto = false; |
a26f4a49 LP |
5723 | break; |
5724 | } | |
b9df3536 | 5725 | |
a015fbe7 | 5726 | case ARG_JSON: |
b1e8f46c | 5727 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
5728 | if (r <= 0) |
5729 | return r; | |
a015fbe7 TH |
5730 | |
5731 | break; | |
5732 | ||
b9df3536 LP |
5733 | case ARG_KEY_FILE: { |
5734 | _cleanup_(erase_and_freep) char *k = NULL; | |
5735 | size_t n = 0; | |
5736 | ||
8b3c3a49 | 5737 | r = read_full_file_full( |
986311c2 | 5738 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
5739 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
5740 | NULL, | |
5741 | &k, &n); | |
b9df3536 LP |
5742 | if (r < 0) |
5743 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5744 | ||
5745 | erase_and_free(arg_key); | |
5746 | arg_key = TAKE_PTR(k); | |
5747 | arg_key_size = n; | |
5748 | break; | |
5749 | } | |
a26f4a49 | 5750 | |
b456191d DDM |
5751 | case ARG_PRIVATE_KEY: { |
5752 | _cleanup_(erase_and_freep) char *k = NULL; | |
5753 | size_t n = 0; | |
5754 | ||
5755 | r = read_full_file_full( | |
5756 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5757 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, | |
5758 | NULL, | |
5759 | &k, &n); | |
5760 | if (r < 0) | |
5761 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
5762 | ||
5763 | EVP_PKEY_free(arg_private_key); | |
5764 | arg_private_key = NULL; | |
5765 | r = parse_private_key(k, n, &arg_private_key); | |
5766 | if (r < 0) | |
5767 | return r; | |
5768 | break; | |
5769 | } | |
5770 | ||
5771 | case ARG_CERTIFICATE: { | |
5772 | _cleanup_free_ char *cert = NULL; | |
5773 | size_t n = 0; | |
5774 | ||
5775 | r = read_full_file_full( | |
5776 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
5777 | READ_FULL_FILE_CONNECT_SOCKET, | |
5778 | NULL, | |
5779 | &cert, &n); | |
5780 | if (r < 0) | |
5781 | return log_error_errno(r, "Failed to read certificate file '%s': %m", optarg); | |
5782 | ||
5783 | X509_free(arg_certificate); | |
5784 | arg_certificate = NULL; | |
5785 | r = parse_x509_certificate(cert, n, &arg_certificate); | |
5786 | if (r < 0) | |
5787 | return r; | |
5788 | break; | |
5789 | } | |
5790 | ||
889914ef LP |
5791 | case ARG_TPM2_DEVICE: { |
5792 | _cleanup_free_ char *device = NULL; | |
5793 | ||
5794 | if (streq(optarg, "list")) | |
5795 | return tpm2_list_devices(); | |
5796 | ||
5797 | if (!streq(optarg, "auto")) { | |
5798 | device = strdup(optarg); | |
5799 | if (!device) | |
5800 | return log_oom(); | |
5801 | } | |
5802 | ||
5803 | free(arg_tpm2_device); | |
5804 | arg_tpm2_device = TAKE_PTR(device); | |
5805 | break; | |
5806 | } | |
5807 | ||
222a951f LP |
5808 | case ARG_TPM2_PCRS: |
5809 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_pcr_mask); | |
889914ef LP |
5810 | if (r < 0) |
5811 | return r; | |
5812 | ||
889914ef | 5813 | break; |
889914ef | 5814 | |
02ef97cd LP |
5815 | case ARG_TPM2_PUBLIC_KEY: |
5816 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key); | |
5817 | if (r < 0) | |
5818 | return r; | |
5819 | ||
5820 | break; | |
5821 | ||
5822 | case ARG_TPM2_PUBLIC_KEY_PCRS: | |
5823 | r = tpm2_parse_pcr_argument(optarg, &arg_tpm2_public_key_pcr_mask); | |
5824 | if (r < 0) | |
5825 | return r; | |
5826 | ||
5827 | break; | |
5828 | ||
4cee8333 DDM |
5829 | case ARG_SPLIT: |
5830 | r = parse_boolean_argument("--split=", optarg, NULL); | |
5831 | if (r < 0) | |
5832 | return r; | |
5833 | ||
5834 | arg_split = r; | |
5835 | break; | |
5836 | ||
81d1098b DDM |
5837 | case ARG_INCLUDE_PARTITIONS: |
5838 | if (arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE) | |
5839 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5840 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
5841 | ||
220780db | 5842 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
5843 | if (r < 0) |
5844 | return r; | |
5845 | ||
5846 | arg_filter_partitions_type = FILTER_PARTITIONS_INCLUDE; | |
5847 | ||
5848 | break; | |
5849 | ||
5850 | case ARG_EXCLUDE_PARTITIONS: | |
5851 | if (arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE) | |
5852 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5853 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
5854 | ||
220780db | 5855 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
5856 | if (r < 0) |
5857 | return r; | |
5858 | ||
5859 | arg_filter_partitions_type = FILTER_PARTITIONS_EXCLUDE; | |
5860 | ||
5861 | break; | |
5862 | ||
8275334b DDM |
5863 | case ARG_DEFER_PARTITIONS: |
5864 | r = parse_partition_types(optarg, &arg_defer_partitions, &arg_n_defer_partitions); | |
7d505753 DDM |
5865 | if (r < 0) |
5866 | return r; | |
5867 | ||
5868 | break; | |
5869 | ||
e594a3b1 LP |
5870 | case '?': |
5871 | return -EINVAL; | |
5872 | ||
5873 | default: | |
04499a70 | 5874 | assert_not_reached(); |
e594a3b1 LP |
5875 | } |
5876 | ||
5877 | if (argc - optind > 1) | |
5878 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5879 | "Expected at most one argument, the path to the block device."); | |
5880 | ||
a26f4a49 | 5881 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 5882 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 5883 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
5884 | |
5885 | if (arg_can_factory_reset) | |
a26f4a49 LP |
5886 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
5887 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
5888 | * open things strictly read-only. */ | |
5889 | else if (dry_run >= 0) | |
5890 | arg_dry_run = dry_run; | |
5891 | ||
170c9823 | 5892 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
5893 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5894 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 5895 | |
252d6267 LP |
5896 | if (arg_image && arg_root) |
5897 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
5898 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
5899 | |
5900 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
5901 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
5902 | * is vendor-supplied but the root fs formatted on first boot. */ | |
5903 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
5904 | if (r <= 0) { | |
5905 | if (r < 0 && r != -ENOENT) | |
5906 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
5907 | ||
5908 | arg_root = strdup("/sysroot"); | |
5909 | } else | |
5910 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
5911 | if (!arg_root) |
5912 | return log_oom(); | |
5913 | } | |
5914 | ||
e594a3b1 | 5915 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 5916 | |
252d6267 | 5917 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
5918 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
5919 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
5920 | ||
4cee8333 DDM |
5921 | if (arg_split && !arg_node) |
5922 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
5923 | "A path to a loopback file must be specified when --split is used."); | |
5924 | ||
889914ef LP |
5925 | if (arg_tpm2_pcr_mask == UINT32_MAX) |
5926 | arg_tpm2_pcr_mask = TPM2_PCR_MASK_DEFAULT; | |
02ef97cd LP |
5927 | if (arg_tpm2_public_key_pcr_mask == UINT32_MAX) |
5928 | arg_tpm2_public_key_pcr_mask = UINT32_C(1) << TPM_PCR_INDEX_KERNEL_IMAGE; | |
889914ef | 5929 | |
a26d463d DDM |
5930 | if (arg_pretty < 0 && isatty(STDOUT_FILENO)) |
5931 | arg_pretty = true; | |
5932 | ||
e594a3b1 LP |
5933 | return 1; |
5934 | } | |
5935 | ||
5936 | static int parse_proc_cmdline_factory_reset(void) { | |
5937 | bool b; | |
5938 | int r; | |
5939 | ||
5940 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
5941 | return 0; | |
5942 | ||
5943 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
5944 | return 0; | |
5945 | ||
5946 | r = proc_cmdline_get_bool("systemd.factory_reset", &b); | |
5947 | if (r < 0) | |
5948 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
5949 | if (r > 0) { | |
5950 | arg_factory_reset = b; | |
5951 | ||
5952 | if (b) | |
5953 | log_notice("Honouring factory reset requested via kernel command line."); | |
5954 | } | |
5955 | ||
5956 | return 0; | |
5957 | } | |
5958 | ||
5959 | static int parse_efi_variable_factory_reset(void) { | |
5960 | _cleanup_free_ char *value = NULL; | |
5961 | int r; | |
5962 | ||
5963 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
5964 | return 0; | |
5965 | ||
5966 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
5967 | return 0; | |
5968 | ||
e6f055cb | 5969 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
e594a3b1 LP |
5970 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
5971 | return 0; | |
5972 | if (r < 0) | |
5973 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); | |
5974 | ||
5975 | r = parse_boolean(value); | |
5976 | if (r < 0) | |
5977 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
5978 | ||
5979 | arg_factory_reset = r; | |
5980 | if (r) | |
111a3aae | 5981 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
5982 | |
5983 | return 0; | |
5984 | } | |
5985 | ||
5986 | static int remove_efi_variable_factory_reset(void) { | |
5987 | int r; | |
5988 | ||
e6f055cb | 5989 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
e594a3b1 LP |
5990 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) |
5991 | return 0; | |
5992 | if (r < 0) | |
5993 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); | |
5994 | ||
5995 | log_info("Successfully unset EFI variable FactoryReset."); | |
5996 | return 0; | |
5997 | } | |
5998 | ||
252d6267 LP |
5999 | static int acquire_root_devno( |
6000 | const char *p, | |
6001 | const char *root, | |
6002 | int mode, | |
6003 | char **ret, | |
6004 | int *ret_fd) { | |
6005 | ||
6006 | _cleanup_free_ char *found_path = NULL; | |
6007 | dev_t devno, fd_devno = MODE_INVALID; | |
254d1313 | 6008 | _cleanup_close_ int fd = -EBADF; |
e594a3b1 | 6009 | struct stat st; |
e594a3b1 LP |
6010 | int r; |
6011 | ||
a26f4a49 LP |
6012 | assert(p); |
6013 | assert(ret); | |
6014 | assert(ret_fd); | |
6015 | ||
252d6267 | 6016 | fd = chase_symlinks_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 6017 | if (fd < 0) |
252d6267 | 6018 | return fd; |
e594a3b1 LP |
6019 | |
6020 | if (fstat(fd, &st) < 0) | |
6021 | return -errno; | |
6022 | ||
6023 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 6024 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 6025 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
6026 | return 0; |
6027 | } | |
6028 | ||
252d6267 LP |
6029 | if (S_ISBLK(st.st_mode)) { |
6030 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 6031 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
6032 | if (root) |
6033 | return -EPERM; | |
6034 | ||
a26f4a49 | 6035 | fd_devno = devno = st.st_rdev; |
252d6267 | 6036 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
6037 | |
6038 | devno = st.st_dev; | |
a26f4a49 | 6039 | if (major(devno) == 0) { |
e594a3b1 LP |
6040 | r = btrfs_get_block_device_fd(fd, &devno); |
6041 | if (r == -ENOTTY) /* not btrfs */ | |
6042 | return -ENODEV; | |
6043 | if (r < 0) | |
6044 | return r; | |
6045 | } | |
e594a3b1 LP |
6046 | } else |
6047 | return -ENOTBLK; | |
6048 | ||
6049 | /* From dm-crypt to backing partition */ | |
6050 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
6051 | if (r == -ENOENT) |
6052 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
6053 | else if (r < 0) | |
e594a3b1 LP |
6054 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
6055 | ||
6056 | /* From partition to whole disk containing it */ | |
6057 | r = block_get_whole_disk(devno, &devno); | |
6058 | if (r < 0) | |
162392b7 | 6059 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 6060 | |
4fe46c34 | 6061 | r = devname_from_devnum(S_IFBLK, devno, ret); |
a26f4a49 LP |
6062 | if (r < 0) |
6063 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
6064 | ||
6bbae9f8 | 6065 | /* Only if we still look at the same block device we can reuse the fd. Otherwise return an |
a26f4a49 | 6066 | * invalidated fd. */ |
f5fbe71d | 6067 | *ret_fd = fd_devno != MODE_INVALID && fd_devno == devno ? TAKE_FD(fd) : -1; |
a26f4a49 | 6068 | return 0; |
e594a3b1 LP |
6069 | } |
6070 | ||
cc751c75 | 6071 | static int find_root(Context *context) { |
54632d2e | 6072 | _cleanup_free_ char *device = NULL; |
5980d463 | 6073 | int r; |
e594a3b1 | 6074 | |
cc751c75 | 6075 | assert(context); |
a26f4a49 | 6076 | |
e594a3b1 | 6077 | if (arg_node) { |
a26f4a49 | 6078 | if (arg_empty == EMPTY_CREATE) { |
254d1313 | 6079 | _cleanup_close_ int fd = -EBADF; |
a26f4a49 LP |
6080 | _cleanup_free_ char *s = NULL; |
6081 | ||
6082 | s = strdup(arg_node); | |
6083 | if (!s) | |
6084 | return log_oom(); | |
6085 | ||
5332d7c6 | 6086 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
6087 | if (fd < 0) |
6088 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
6089 | ||
cc751c75 | 6090 | context->node = TAKE_PTR(s); |
db1d4e6b | 6091 | context->node_is_our_file = true; |
cc751c75 | 6092 | context->backing_fd = TAKE_FD(fd); |
a26f4a49 LP |
6093 | return 0; |
6094 | } | |
6095 | ||
252d6267 LP |
6096 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
6097 | * we'll take it relative to the host, not the image */ | |
cc751c75 | 6098 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
67f0ac8c LP |
6099 | if (r == -EUCLEAN) |
6100 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 6101 | if (r < 0) |
aa2a74ad | 6102 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
6103 | |
6104 | return 0; | |
6105 | } | |
6106 | ||
a26f4a49 LP |
6107 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
6108 | ||
54632d2e KK |
6109 | /* If the root mount has been replaced by some form of volatile file system (overlayfs), the |
6110 | * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that | |
6111 | * here. */ | |
6112 | r = readlink_malloc("/run/systemd/volatile-root", &device); | |
6113 | if (r == -ENOENT) { /* volatile-root not found */ | |
6114 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The | |
6115 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
6116 | * (think: volatile setups) */ | |
e594a3b1 | 6117 | |
54632d2e | 6118 | FOREACH_STRING(p, "/", "/usr") { |
e594a3b1 | 6119 | |
cc751c75 DDM |
6120 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, &context->node, |
6121 | &context->backing_fd); | |
54632d2e KK |
6122 | if (r < 0) { |
6123 | if (r == -EUCLEAN) | |
6124 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
6125 | if (r != -ENODEV) | |
6126 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
6127 | } else | |
6128 | return 0; | |
6129 | } | |
6130 | } else if (r < 0) | |
6131 | return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m"); | |
6132 | else { | |
cc751c75 | 6133 | r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
54632d2e KK |
6134 | if (r == -EUCLEAN) |
6135 | return btrfs_log_dev_root(LOG_ERR, r, device); | |
6136 | if (r < 0) | |
6137 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device); | |
6138 | ||
6139 | return 0; | |
e594a3b1 LP |
6140 | } |
6141 | ||
6142 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
6143 | } | |
6144 | ||
f9b3afae | 6145 | static int resize_pt(int fd) { |
f9b3afae LP |
6146 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
6147 | int r; | |
6148 | ||
6149 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
6150 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
6151 | * immediately write it again, with no changes. */ | |
6152 | ||
f8cf3d19 | 6153 | r = fdisk_new_context_fd(fd, /* read_only= */ false, &c); |
f9b3afae | 6154 | if (r < 0) |
ddb6eeaf | 6155 | return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6156 | |
6157 | r = fdisk_has_label(c); | |
6158 | if (r < 0) | |
ddb6eeaf | 6159 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6160 | if (r == 0) { |
6161 | log_debug("Not resizing partition table, as there currently is none."); | |
6162 | return 0; | |
6163 | } | |
6164 | ||
6165 | r = fdisk_write_disklabel(c); | |
6166 | if (r < 0) | |
6167 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
6168 | ||
6169 | log_info("Resized partition table."); | |
6170 | return 1; | |
6171 | } | |
6172 | ||
252d6267 LP |
6173 | static int resize_backing_fd( |
6174 | const char *node, /* The primary way we access the disk image to operate on */ | |
6175 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
6176 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
6177 | LoopDevice *loop_device) { | |
6178 | ||
254d1313 | 6179 | _cleanup_close_ int writable_fd = -EBADF; |
252d6267 | 6180 | uint64_t current_size; |
a26f4a49 LP |
6181 | struct stat st; |
6182 | int r; | |
6183 | ||
6184 | assert(node); | |
6185 | assert(fd); | |
6186 | ||
6187 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
6188 | return 0; | |
6189 | ||
6190 | if (*fd < 0) { | |
6191 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
6192 | * keep a reference to the file we can pass around. */ | |
6193 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
6194 | if (*fd < 0) | |
6195 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
6196 | } | |
6197 | ||
6198 | if (fstat(*fd, &st) < 0) | |
6199 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
6200 | ||
252d6267 LP |
6201 | if (S_ISBLK(st.st_mode)) { |
6202 | if (!backing_file) | |
6203 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
6204 | ||
6205 | assert(loop_device); | |
a26f4a49 | 6206 | |
252d6267 LP |
6207 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
6208 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
6209 | } else { | |
6210 | r = stat_verify_regular(&st); | |
6211 | if (r < 0) | |
6212 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
6213 | ||
6214 | assert(!backing_file); | |
6215 | assert(!loop_device); | |
6216 | current_size = st.st_size; | |
6217 | } | |
6218 | ||
252d6267 | 6219 | if (current_size >= arg_size) { |
2b59bf51 ZJS |
6220 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", |
6221 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 LP |
6222 | return 0; |
6223 | } | |
6224 | ||
252d6267 LP |
6225 | if (S_ISBLK(st.st_mode)) { |
6226 | assert(backing_file); | |
6227 | ||
6228 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
6229 | * backing file, hence let's do that. */ | |
6230 | ||
6231 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
6232 | if (writable_fd < 0) | |
6233 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
6234 | ||
6235 | if (fstat(writable_fd, &st) < 0) | |
6236 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
6237 | ||
6238 | r = stat_verify_regular(&st); | |
6239 | if (r < 0) | |
6240 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
6241 | ||
6242 | if ((uint64_t) st.st_size != current_size) | |
6243 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2b59bf51 ZJS |
6244 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", |
6245 | node, backing_file); | |
252d6267 LP |
6246 | } else { |
6247 | assert(S_ISREG(st.st_mode)); | |
6248 | assert(!backing_file); | |
a26f4a49 | 6249 | |
252d6267 LP |
6250 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
6251 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
6252 | * as fdisk can't accept it anyway. */ | |
6253 | ||
6254 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
6255 | if (writable_fd < 0) | |
6256 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
6257 | } | |
a26f4a49 LP |
6258 | |
6259 | if (!arg_discard) { | |
6260 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
6261 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
6262 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
2b59bf51 | 6263 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 LP |
6264 | |
6265 | /* Fallback to truncation, if fallocate() is not supported. */ | |
6266 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
6267 | } else { | |
252d6267 | 6268 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6269 | log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node); |
a26f4a49 | 6270 | else |
2b59bf51 ZJS |
6271 | log_info("File '%s' grown from %s to %s by allocation.", |
6272 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 | 6273 | |
252d6267 | 6274 | goto done; |
a26f4a49 LP |
6275 | } |
6276 | } | |
6277 | ||
6278 | if (ftruncate(writable_fd, arg_size) < 0) | |
6279 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
2b59bf51 | 6280 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 | 6281 | |
252d6267 | 6282 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6283 | log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size)); |
252d6267 | 6284 | else |
2b59bf51 ZJS |
6285 | log_info("File '%s' grown from %s to %s by truncation.", |
6286 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
252d6267 LP |
6287 | |
6288 | done: | |
f9b3afae LP |
6289 | r = resize_pt(writable_fd); |
6290 | if (r < 0) | |
6291 | return r; | |
6292 | ||
252d6267 LP |
6293 | if (loop_device) { |
6294 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
6295 | if (r < 0) | |
6296 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
6297 | } | |
a26f4a49 LP |
6298 | |
6299 | return 1; | |
6300 | } | |
6301 | ||
170c9823 | 6302 | static int determine_auto_size(Context *c) { |
994b3031 | 6303 | uint64_t sum; |
170c9823 | 6304 | |
ac33e147 | 6305 | assert(c); |
170c9823 | 6306 | |
994b3031 LP |
6307 | sum = round_up_size(GPT_METADATA_SIZE, 4096); |
6308 | ||
170c9823 LP |
6309 | LIST_FOREACH(partitions, p, c->partitions) { |
6310 | uint64_t m; | |
6311 | ||
6312 | if (p->dropped) | |
6313 | continue; | |
6314 | ||
994b3031 | 6315 | m = partition_min_size_with_padding(c, p); |
170c9823 LP |
6316 | if (m > UINT64_MAX - sum) |
6317 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
6318 | ||
6319 | sum += m; | |
6320 | } | |
6321 | ||
2b59bf51 ZJS |
6322 | if (c->total != UINT64_MAX) |
6323 | /* Image already allocated? Then show its size. */ | |
6324 | log_info("Automatically determined minimal disk image size as %s, current image size is %s.", | |
6325 | FORMAT_BYTES(sum), FORMAT_BYTES(c->total)); | |
6326 | else | |
6327 | /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */ | |
6328 | log_info("Automatically determined minimal disk image size as %s.", | |
6329 | FORMAT_BYTES(sum)); | |
170c9823 LP |
6330 | |
6331 | arg_size = sum; | |
6332 | return 0; | |
6333 | } | |
6334 | ||
e594a3b1 | 6335 | static int run(int argc, char *argv[]) { |
252d6267 | 6336 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
252d6267 | 6337 | _cleanup_(umount_and_rmdir_and_freep) char *mounted_dir = NULL; |
e594a3b1 | 6338 | _cleanup_(context_freep) Context* context = NULL; |
cc751c75 | 6339 | bool node_is_our_loop = false; |
e594a3b1 LP |
6340 | int r; |
6341 | ||
6342 | log_show_color(true); | |
6343 | log_parse_environment(); | |
6344 | log_open(); | |
6345 | ||
e594a3b1 LP |
6346 | r = parse_argv(argc, argv); |
6347 | if (r <= 0) | |
6348 | return r; | |
6349 | ||
6350 | r = parse_proc_cmdline_factory_reset(); | |
6351 | if (r < 0) | |
6352 | return r; | |
6353 | ||
6354 | r = parse_efi_variable_factory_reset(); | |
6355 | if (r < 0) | |
6356 | return r; | |
6357 | ||
30f19400 LP |
6358 | #if HAVE_LIBCRYPTSETUP |
6359 | cryptsetup_enable_logging(NULL); | |
6360 | #endif | |
6361 | ||
252d6267 LP |
6362 | if (arg_image) { |
6363 | assert(!arg_root); | |
6364 | ||
6365 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
6366 | * systems */ | |
6367 | r = mount_image_privately_interactively( | |
6368 | arg_image, | |
6369 | DISSECT_IMAGE_MOUNT_READ_ONLY | | |
6370 | (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) */ | |
6371 | DISSECT_IMAGE_GPT_ONLY | | |
6372 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
6373 | DISSECT_IMAGE_USR_NO_ROOT | | |
6374 | DISSECT_IMAGE_REQUIRE_ROOT, | |
6375 | &mounted_dir, | |
e330f97a | 6376 | &loop_device); |
252d6267 LP |
6377 | if (r < 0) |
6378 | return r; | |
6379 | ||
6380 | arg_root = strdup(mounted_dir); | |
6381 | if (!arg_root) | |
6382 | return log_oom(); | |
6383 | ||
6384 | if (!arg_node) { | |
6385 | arg_node = strdup(loop_device->node); | |
6386 | if (!arg_node) | |
6387 | return log_oom(); | |
6388 | ||
3d62af7d | 6389 | /* Remember that the device we are about to manipulate is actually the one we |
252d6267 LP |
6390 | * allocated here, and thus to increase its backing file we know what to do */ |
6391 | node_is_our_loop = true; | |
6392 | } | |
6393 | } | |
6394 | ||
e594a3b1 LP |
6395 | context = context_new(arg_seed); |
6396 | if (!context) | |
6397 | return log_oom(); | |
6398 | ||
224c853f RP |
6399 | strv_uniq(arg_definitions); |
6400 | ||
e594a3b1 LP |
6401 | r = context_read_definitions(context, arg_definitions, arg_root); |
6402 | if (r < 0) | |
6403 | return r; | |
6404 | ||
cc751c75 | 6405 | r = find_root(context); |
0ae5ffe0 YW |
6406 | if (r < 0) |
6407 | return r; | |
6408 | ||
a26f4a49 | 6409 | if (arg_size != UINT64_MAX) { |
252d6267 | 6410 | r = resize_backing_fd( |
cc751c75 DDM |
6411 | context->node, |
6412 | &context->backing_fd, | |
252d6267 LP |
6413 | node_is_our_loop ? arg_image : NULL, |
6414 | node_is_our_loop ? loop_device : NULL); | |
a26f4a49 LP |
6415 | if (r < 0) |
6416 | return r; | |
6417 | } | |
6418 | ||
cc751c75 | 6419 | r = context_load_partition_table(context); |
e594a3b1 LP |
6420 | if (r == -EHWPOISON) |
6421 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
6422 | * really an error when called at boot. */ | |
6423 | if (r < 0) | |
6424 | return r; | |
cc751c75 | 6425 | context->from_scratch = r > 0; /* Starting from scratch */ |
e594a3b1 LP |
6426 | |
6427 | if (arg_can_factory_reset) { | |
6428 | r = context_can_factory_reset(context); | |
6429 | if (r < 0) | |
6430 | return r; | |
6431 | if (r == 0) | |
6432 | return EXIT_FAILURE; | |
6433 | ||
6434 | return 0; | |
6435 | } | |
6436 | ||
cc751c75 | 6437 | r = context_factory_reset(context); |
e594a3b1 LP |
6438 | if (r < 0) |
6439 | return r; | |
6440 | if (r > 0) { | |
6441 | /* We actually did a factory reset! */ | |
6442 | r = remove_efi_variable_factory_reset(); | |
6443 | if (r < 0) | |
6444 | return r; | |
6445 | ||
6446 | /* Reload the reduced partition table */ | |
6447 | context_unload_partition_table(context); | |
cc751c75 | 6448 | r = context_load_partition_table(context); |
e594a3b1 LP |
6449 | if (r < 0) |
6450 | return r; | |
6451 | } | |
6452 | ||
e594a3b1 LP |
6453 | r = context_read_seed(context, arg_root); |
6454 | if (r < 0) | |
6455 | return r; | |
6456 | ||
8bbbdfd7 DDM |
6457 | /* Make sure each partition has a unique UUID and unique label */ |
6458 | r = context_acquire_partition_uuids_and_labels(context); | |
6459 | if (r < 0) | |
6460 | return r; | |
6461 | ||
c4a87b76 DDM |
6462 | r = context_minimize(context); |
6463 | if (r < 0) | |
6464 | return r; | |
6465 | ||
757bc2e4 | 6466 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
6467 | r = context_open_copy_block_paths( |
6468 | context, | |
7802194a | 6469 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
6470 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
6471 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
6472 | if (r < 0) |
6473 | return r; | |
6474 | ||
170c9823 LP |
6475 | if (arg_size_auto) { |
6476 | r = determine_auto_size(context); | |
6477 | if (r < 0) | |
6478 | return r; | |
6479 | ||
6480 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
6481 | context_unload_partition_table(context); | |
6482 | ||
ac33e147 | 6483 | assert(arg_size != UINT64_MAX); |
252d6267 | 6484 | r = resize_backing_fd( |
cc751c75 DDM |
6485 | context->node, |
6486 | &context->backing_fd, | |
252d6267 LP |
6487 | node_is_our_loop ? arg_image : NULL, |
6488 | node_is_our_loop ? loop_device : NULL); | |
170c9823 LP |
6489 | if (r < 0) |
6490 | return r; | |
6491 | ||
cc751c75 | 6492 | r = context_load_partition_table(context); |
170c9823 LP |
6493 | if (r < 0) |
6494 | return r; | |
6495 | } | |
6496 | ||
e594a3b1 LP |
6497 | /* First try to fit new partitions in, dropping by priority until it fits */ |
6498 | for (;;) { | |
14a4c4ed LP |
6499 | uint64_t largest_free_area; |
6500 | ||
6501 | if (context_allocate_partitions(context, &largest_free_area)) | |
e594a3b1 LP |
6502 | break; /* Success! */ |
6503 | ||
9ccceb9d | 6504 | if (!context_drop_or_foreignize_one_priority(context)) { |
d17db7b2 | 6505 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), |
14a4c4ed | 6506 | "Can't fit requested partitions into available free space (%s), refusing.", |
2b59bf51 | 6507 | FORMAT_BYTES(largest_free_area)); |
d17db7b2 LP |
6508 | determine_auto_size(context); |
6509 | return r; | |
6510 | } | |
e594a3b1 LP |
6511 | } |
6512 | ||
6513 | /* Now assign free space according to the weight logic */ | |
6514 | r = context_grow_partitions(context); | |
6515 | if (r < 0) | |
6516 | return r; | |
6517 | ||
0b7f574f | 6518 | /* Now calculate where each new partition gets placed */ |
e594a3b1 LP |
6519 | context_place_partitions(context); |
6520 | ||
cc751c75 | 6521 | (void) context_dump(context, /*late=*/ false); |
a26d463d | 6522 | |
cc751c75 | 6523 | r = context_write_partition_table(context); |
e594a3b1 LP |
6524 | if (r < 0) |
6525 | return r; | |
6526 | ||
4cee8333 DDM |
6527 | r = context_split(context); |
6528 | if (r < 0) | |
6529 | return r; | |
6530 | ||
cc751c75 | 6531 | (void) context_dump(context, /*late=*/ true); |
b5b7879a | 6532 | |
db1d4e6b DDM |
6533 | context->node = mfree(context->node); |
6534 | ||
a2d7c42e DDM |
6535 | LIST_FOREACH(partitions, p, context->partitions) |
6536 | p->split_path = mfree(p->split_path); | |
b5b7879a | 6537 | |
e594a3b1 LP |
6538 | return 0; |
6539 | } | |
6540 | ||
6541 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |