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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
e594a3b1 LP |
2 | |
3 | #if HAVE_VALGRIND_MEMCHECK_H | |
4 | #include <valgrind/memcheck.h> | |
5 | #endif | |
6 | ||
7 | #include <fcntl.h> | |
8 | #include <getopt.h> | |
e594a3b1 LP |
9 | #include <linux/fs.h> |
10 | #include <linux/loop.h> | |
11 | #include <sys/file.h> | |
12 | #include <sys/ioctl.h> | |
13 | #include <sys/stat.h> | |
14 | ||
1a037ba2 | 15 | #include "sd-device.h" |
e594a3b1 LP |
16 | #include "sd-id128.h" |
17 | ||
18 | #include "alloc-util.h" | |
19 | #include "blkid-util.h" | |
20 | #include "blockdev-util.h" | |
21 | #include "btrfs-util.h" | |
d6b4d1c7 | 22 | #include "build.h" |
f461a28d | 23 | #include "chase.h" |
e594a3b1 LP |
24 | #include "conf-files.h" |
25 | #include "conf-parser.h" | |
28db6fbf | 26 | #include "constants.h" |
1e2f3230 | 27 | #include "cryptsetup-util.h" |
ca822829 | 28 | #include "device-util.h" |
7176f06c | 29 | #include "devnum-util.h" |
5c08da58 | 30 | #include "dirent-util.h" |
e594a3b1 LP |
31 | #include "efivars.h" |
32 | #include "errno-util.h" | |
33 | #include "fd-util.h" | |
4dc07c3a | 34 | #include "fdisk-util.h" |
b9df3536 | 35 | #include "fileio.h" |
e594a3b1 LP |
36 | #include "format-table.h" |
37 | #include "format-util.h" | |
38 | #include "fs-util.h" | |
d8e32c47 | 39 | #include "glyph-util.h" |
e594a3b1 | 40 | #include "gpt.h" |
889914ef | 41 | #include "hexdecoct.h" |
ade99252 | 42 | #include "hmac.h" |
e594a3b1 | 43 | #include "id128-util.h" |
baa6a42d | 44 | #include "initrd-util.h" |
b456191d | 45 | #include "io-util.h" |
a015fbe7 | 46 | #include "json.h" |
e594a3b1 | 47 | #include "list.h" |
53171c04 | 48 | #include "loop-util.h" |
e594a3b1 | 49 | #include "main-func.h" |
8a794850 | 50 | #include "mkdir.h" |
53171c04 | 51 | #include "mkfs-util.h" |
8a794850 | 52 | #include "mount-util.h" |
5c08da58 | 53 | #include "mountpoint-util.h" |
c0fad2d9 | 54 | #include "nulstr-util.h" |
b456191d | 55 | #include "openssl-util.h" |
614b022c | 56 | #include "parse-argument.h" |
c3eaba2d | 57 | #include "parse-helpers.h" |
e594a3b1 LP |
58 | #include "pretty-print.h" |
59 | #include "proc-cmdline.h" | |
8a794850 | 60 | #include "process-util.h" |
b9df3536 | 61 | #include "random-util.h" |
170c9823 | 62 | #include "resize-fs.h" |
95bfd3cd | 63 | #include "rm-rf.h" |
e594a3b1 | 64 | #include "sort-util.h" |
e031166e | 65 | #include "specifier.h" |
e594a3b1 | 66 | #include "stdio-util.h" |
889914ef | 67 | #include "string-table.h" |
e594a3b1 LP |
68 | #include "string-util.h" |
69 | #include "strv.h" | |
bf819d3a | 70 | #include "sync-util.h" |
95bfd3cd | 71 | #include "tmpfile-util.h" |
e594a3b1 | 72 | #include "terminal-util.h" |
02ef97cd | 73 | #include "tpm-pcr.h" |
889914ef | 74 | #include "tpm2-util.h" |
8a794850 | 75 | #include "user-util.h" |
e594a3b1 LP |
76 | #include "utf8.h" |
77 | ||
fb08381c | 78 | /* If not configured otherwise use a minimal partition size of 10M */ |
b262cbe8 | 79 | #define DEFAULT_MIN_SIZE (10ULL*1024ULL*1024ULL) |
fb08381c LP |
80 | |
81 | /* Hard lower limit for new partition sizes */ | |
b262cbe8 | 82 | #define HARD_MIN_SIZE 4096ULL |
fb08381c | 83 | |
b456191d | 84 | /* We know up front we're never going to put more than this in a verity sig partition. */ |
b262cbe8 | 85 | #define VERITY_SIG_SIZE (HARD_MIN_SIZE*4ULL) |
b456191d | 86 | |
69e3234d | 87 | /* libfdisk takes off slightly more than 1M of the disk size when creating a GPT disk label */ |
b262cbe8 | 88 | #define GPT_METADATA_SIZE (1044ULL*1024ULL) |
170c9823 LP |
89 | |
90 | /* LUKS2 takes off 16M of the partition size with its metadata by default */ | |
b262cbe8 | 91 | #define LUKS2_METADATA_SIZE (16ULL*1024ULL*1024ULL) |
170c9823 | 92 | |
48a09a8f DDM |
93 | /* To do LUKS2 offline encryption, we need to keep some extra free space at the end of the partition. */ |
94 | #define LUKS2_METADATA_KEEP_FREE (LUKS2_METADATA_SIZE*2ULL) | |
95 | ||
98e0456e DDM |
96 | /* LUKS2 volume key size. */ |
97 | #define VOLUME_KEY_SIZE (512ULL/8ULL) | |
98 | ||
e57b7020 DDM |
99 | #define APIVFS_TMP_DIRS_NULSTR "proc\0sys\0dev\0tmp\0run\0var/tmp\0" |
100 | ||
e594a3b1 LP |
101 | /* Note: When growing and placing new partitions we always align to 4K sector size. It's how newer hard disks |
102 | * are designed, and if everything is aligned to that performance is best. And for older hard disks with 512B | |
103 | * sector size devices were generally assumed to have an even number of sectors, hence at the worst we'll | |
104 | * waste 3K per partition, which is probably fine. */ | |
105 | ||
106 | static enum { | |
107 | EMPTY_REFUSE, /* refuse empty disks, never create a partition table */ | |
108 | EMPTY_ALLOW, /* allow empty disks, create partition table if necessary */ | |
109 | EMPTY_REQUIRE, /* require an empty disk, create a partition table */ | |
110 | EMPTY_FORCE, /* make disk empty, erase everything, create a partition table always */ | |
a26f4a49 | 111 | EMPTY_CREATE, /* create disk as loopback file, create a partition table always */ |
e594a3b1 LP |
112 | } arg_empty = EMPTY_REFUSE; |
113 | ||
53538e33 | 114 | typedef enum FilterPartitionType { |
81d1098b DDM |
115 | FILTER_PARTITIONS_NONE, |
116 | FILTER_PARTITIONS_EXCLUDE, | |
117 | FILTER_PARTITIONS_INCLUDE, | |
118 | _FILTER_PARTITIONS_MAX, | |
119 | _FILTER_PARTITIONS_INVALID = -EINVAL, | |
120 | } FilterPartitionsType; | |
121 | ||
e594a3b1 LP |
122 | static bool arg_dry_run = true; |
123 | static const char *arg_node = NULL; | |
124 | static char *arg_root = NULL; | |
252d6267 | 125 | static char *arg_image = NULL; |
224c853f | 126 | static char **arg_definitions = NULL; |
e594a3b1 LP |
127 | static bool arg_discard = true; |
128 | static bool arg_can_factory_reset = false; | |
129 | static int arg_factory_reset = -1; | |
130 | static sd_id128_t arg_seed = SD_ID128_NULL; | |
131 | static bool arg_randomize = false; | |
132 | static int arg_pretty = -1; | |
a26f4a49 | 133 | static uint64_t arg_size = UINT64_MAX; |
170c9823 | 134 | static bool arg_size_auto = false; |
6a01ea4a | 135 | static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; |
896e678b LP |
136 | static PagerFlags arg_pager_flags = 0; |
137 | static bool arg_legend = true; | |
b9df3536 LP |
138 | static void *arg_key = NULL; |
139 | static size_t arg_key_size = 0; | |
b456191d DDM |
140 | static EVP_PKEY *arg_private_key = NULL; |
141 | static X509 *arg_certificate = NULL; | |
889914ef LP |
142 | static char *arg_tpm2_device = NULL; |
143 | static uint32_t arg_tpm2_pcr_mask = UINT32_MAX; | |
02ef97cd LP |
144 | static char *arg_tpm2_public_key = NULL; |
145 | static uint32_t arg_tpm2_public_key_pcr_mask = UINT32_MAX; | |
4cee8333 | 146 | static bool arg_split = false; |
9786dfe6 | 147 | static GptPartitionType *arg_filter_partitions = NULL; |
d989dd76 | 148 | static size_t arg_n_filter_partitions = 0; |
81d1098b | 149 | static FilterPartitionsType arg_filter_partitions_type = FILTER_PARTITIONS_NONE; |
9786dfe6 | 150 | static GptPartitionType *arg_defer_partitions = NULL; |
8275334b | 151 | static size_t arg_n_defer_partitions = 0; |
e1878ef7 | 152 | static uint64_t arg_sector_size = 0; |
84be0c71 | 153 | static ImagePolicy *arg_image_policy = NULL; |
9786dfe6 | 154 | static Architecture arg_architecture = _ARCHITECTURE_INVALID; |
fc10b158 | 155 | static int arg_offline = -1; |
1e46985a | 156 | static char *arg_copy_from = NULL; |
e594a3b1 LP |
157 | |
158 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
252d6267 | 159 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
224c853f | 160 | STATIC_DESTRUCTOR_REGISTER(arg_definitions, strv_freep); |
b9df3536 | 161 | STATIC_DESTRUCTOR_REGISTER(arg_key, erase_and_freep); |
b456191d DDM |
162 | STATIC_DESTRUCTOR_REGISTER(arg_private_key, EVP_PKEY_freep); |
163 | STATIC_DESTRUCTOR_REGISTER(arg_certificate, X509_freep); | |
889914ef | 164 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_device, freep); |
02ef97cd | 165 | STATIC_DESTRUCTOR_REGISTER(arg_tpm2_public_key, freep); |
81d1098b | 166 | STATIC_DESTRUCTOR_REGISTER(arg_filter_partitions, freep); |
84be0c71 | 167 | STATIC_DESTRUCTOR_REGISTER(arg_image_policy, image_policy_freep); |
1e46985a | 168 | STATIC_DESTRUCTOR_REGISTER(arg_copy_from, freep); |
e594a3b1 | 169 | |
e594a3b1 | 170 | typedef struct FreeArea FreeArea; |
e594a3b1 | 171 | |
889914ef LP |
172 | typedef enum EncryptMode { |
173 | ENCRYPT_OFF, | |
174 | ENCRYPT_KEY_FILE, | |
175 | ENCRYPT_TPM2, | |
176 | ENCRYPT_KEY_FILE_TPM2, | |
177 | _ENCRYPT_MODE_MAX, | |
2d93c20e | 178 | _ENCRYPT_MODE_INVALID = -EINVAL, |
889914ef LP |
179 | } EncryptMode; |
180 | ||
b5b7879a DDM |
181 | typedef enum VerityMode { |
182 | VERITY_OFF, | |
183 | VERITY_DATA, | |
184 | VERITY_HASH, | |
b456191d | 185 | VERITY_SIG, |
b5b7879a DDM |
186 | _VERITY_MODE_MAX, |
187 | _VERITY_MODE_INVALID = -EINVAL, | |
188 | } VerityMode; | |
189 | ||
5c33b686 DDM |
190 | typedef enum MinimizeMode { |
191 | MINIMIZE_OFF, | |
192 | MINIMIZE_BEST, | |
193 | MINIMIZE_GUESS, | |
194 | _MINIMIZE_MODE_MAX, | |
195 | _MINIMIZE_MODE_INVALID = -EINVAL, | |
196 | } MinimizeMode; | |
197 | ||
448cfb7f | 198 | typedef struct Partition { |
e594a3b1 | 199 | char *definition_path; |
39fc0174 | 200 | char **drop_in_files; |
e594a3b1 | 201 | |
22e932f4 | 202 | GptPartitionType type; |
e594a3b1 | 203 | sd_id128_t current_uuid, new_uuid; |
11749b61 | 204 | bool new_uuid_is_set; |
e594a3b1 | 205 | char *current_label, *new_label; |
15cad3a2 | 206 | sd_id128_t fs_uuid, luks_uuid; |
e594a3b1 LP |
207 | |
208 | bool dropped; | |
209 | bool factory_reset; | |
210 | int32_t priority; | |
211 | ||
212 | uint32_t weight, padding_weight; | |
213 | ||
214 | uint64_t current_size, new_size; | |
215 | uint64_t size_min, size_max; | |
216 | ||
217 | uint64_t current_padding, new_padding; | |
218 | uint64_t padding_min, padding_max; | |
219 | ||
220 | uint64_t partno; | |
221 | uint64_t offset; | |
222 | ||
223 | struct fdisk_partition *current_partition; | |
224 | struct fdisk_partition *new_partition; | |
225 | FreeArea *padding_area; | |
226 | FreeArea *allocated_to_area; | |
227 | ||
757bc2e4 | 228 | char *copy_blocks_path; |
7d07030e | 229 | bool copy_blocks_path_is_our_file; |
5c08da58 | 230 | bool copy_blocks_auto; |
585c5c75 | 231 | const char *copy_blocks_root; |
757bc2e4 | 232 | int copy_blocks_fd; |
1e46985a | 233 | uint64_t copy_blocks_offset; |
757bc2e4 LP |
234 | uint64_t copy_blocks_size; |
235 | ||
53171c04 | 236 | char *format; |
8a794850 | 237 | char **copy_files; |
600bf76c DDM |
238 | char **exclude_files_source; |
239 | char **exclude_files_target; | |
d83d8048 | 240 | char **make_directories; |
889914ef | 241 | EncryptMode encrypt; |
b5b7879a DDM |
242 | VerityMode verity; |
243 | char *verity_match_key; | |
5c33b686 | 244 | MinimizeMode minimize; |
53171c04 | 245 | |
e73309c5 | 246 | uint64_t gpt_flags; |
ff0771bf | 247 | int no_auto; |
e73309c5 | 248 | int read_only; |
1c41c1dc | 249 | int growfs; |
e73309c5 | 250 | |
b5b7879a DDM |
251 | uint8_t *roothash; |
252 | size_t roothash_size; | |
253 | ||
4cee8333 | 254 | char *split_name_format; |
62108348 | 255 | char *split_path; |
4cee8333 | 256 | |
448cfb7f | 257 | struct Partition *siblings[_VERITY_MODE_MAX]; |
b5b7879a | 258 | |
448cfb7f DDM |
259 | LIST_FIELDS(struct Partition, partitions); |
260 | } Partition; | |
e594a3b1 LP |
261 | |
262 | #define PARTITION_IS_FOREIGN(p) (!(p)->definition_path) | |
263 | #define PARTITION_EXISTS(p) (!!(p)->current_partition) | |
264 | ||
265 | struct FreeArea { | |
266 | Partition *after; | |
267 | uint64_t size; | |
268 | uint64_t allocated; | |
269 | }; | |
270 | ||
448cfb7f | 271 | typedef struct Context { |
e594a3b1 LP |
272 | LIST_HEAD(Partition, partitions); |
273 | size_t n_partitions; | |
274 | ||
275 | FreeArea **free_areas; | |
319a4f4b | 276 | size_t n_free_areas; |
e594a3b1 LP |
277 | |
278 | uint64_t start, end, total; | |
279 | ||
280 | struct fdisk_context *fdisk_context; | |
994b3031 LP |
281 | uint64_t sector_size; |
282 | uint64_t grain_size; | |
e594a3b1 LP |
283 | |
284 | sd_id128_t seed; | |
cc751c75 DDM |
285 | |
286 | char *node; | |
db1d4e6b | 287 | bool node_is_our_file; |
cc751c75 DDM |
288 | int backing_fd; |
289 | ||
290 | bool from_scratch; | |
448cfb7f | 291 | } Context; |
e594a3b1 | 292 | |
889914ef LP |
293 | static const char *encrypt_mode_table[_ENCRYPT_MODE_MAX] = { |
294 | [ENCRYPT_OFF] = "off", | |
295 | [ENCRYPT_KEY_FILE] = "key-file", | |
296 | [ENCRYPT_TPM2] = "tpm2", | |
297 | [ENCRYPT_KEY_FILE_TPM2] = "key-file+tpm2", | |
298 | }; | |
299 | ||
b5b7879a DDM |
300 | static const char *verity_mode_table[_VERITY_MODE_MAX] = { |
301 | [VERITY_OFF] = "off", | |
302 | [VERITY_DATA] = "data", | |
303 | [VERITY_HASH] = "hash", | |
b456191d | 304 | [VERITY_SIG] = "signature", |
b5b7879a DDM |
305 | }; |
306 | ||
5c33b686 DDM |
307 | static const char *minimize_mode_table[_MINIMIZE_MODE_MAX] = { |
308 | [MINIMIZE_OFF] = "off", | |
309 | [MINIMIZE_BEST] = "best", | |
310 | [MINIMIZE_GUESS] = "guess", | |
311 | }; | |
312 | ||
2709d029 | 313 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(encrypt_mode, EncryptMode, ENCRYPT_KEY_FILE); |
86bebe38 | 314 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(verity_mode, VerityMode); |
5c33b686 | 315 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_WITH_BOOLEAN(minimize_mode, MinimizeMode, MINIMIZE_BEST); |
889914ef | 316 | |
e594a3b1 LP |
317 | static uint64_t round_down_size(uint64_t v, uint64_t p) { |
318 | return (v / p) * p; | |
319 | } | |
320 | ||
321 | static uint64_t round_up_size(uint64_t v, uint64_t p) { | |
322 | ||
323 | v = DIV_ROUND_UP(v, p); | |
324 | ||
325 | if (v > UINT64_MAX / p) | |
326 | return UINT64_MAX; /* overflow */ | |
327 | ||
328 | return v * p; | |
329 | } | |
330 | ||
331 | static Partition *partition_new(void) { | |
332 | Partition *p; | |
333 | ||
334 | p = new(Partition, 1); | |
335 | if (!p) | |
336 | return NULL; | |
337 | ||
338 | *p = (Partition) { | |
339 | .weight = 1000, | |
340 | .padding_weight = 0, | |
341 | .current_size = UINT64_MAX, | |
342 | .new_size = UINT64_MAX, | |
343 | .size_min = UINT64_MAX, | |
344 | .size_max = UINT64_MAX, | |
345 | .current_padding = UINT64_MAX, | |
346 | .new_padding = UINT64_MAX, | |
347 | .padding_min = UINT64_MAX, | |
348 | .padding_max = UINT64_MAX, | |
349 | .partno = UINT64_MAX, | |
350 | .offset = UINT64_MAX, | |
254d1313 | 351 | .copy_blocks_fd = -EBADF, |
1e46985a | 352 | .copy_blocks_offset = UINT64_MAX, |
757bc2e4 | 353 | .copy_blocks_size = UINT64_MAX, |
ff0771bf | 354 | .no_auto = -1, |
e73309c5 | 355 | .read_only = -1, |
1c41c1dc | 356 | .growfs = -1, |
e594a3b1 LP |
357 | }; |
358 | ||
359 | return p; | |
360 | } | |
361 | ||
362 | static Partition* partition_free(Partition *p) { | |
363 | if (!p) | |
364 | return NULL; | |
365 | ||
366 | free(p->current_label); | |
367 | free(p->new_label); | |
368 | free(p->definition_path); | |
39fc0174 | 369 | strv_free(p->drop_in_files); |
e594a3b1 LP |
370 | |
371 | if (p->current_partition) | |
372 | fdisk_unref_partition(p->current_partition); | |
373 | if (p->new_partition) | |
374 | fdisk_unref_partition(p->new_partition); | |
375 | ||
7d07030e DDM |
376 | if (p->copy_blocks_path_is_our_file) |
377 | unlink_and_free(p->copy_blocks_path); | |
378 | else | |
379 | free(p->copy_blocks_path); | |
757bc2e4 LP |
380 | safe_close(p->copy_blocks_fd); |
381 | ||
53171c04 | 382 | free(p->format); |
8a794850 | 383 | strv_free(p->copy_files); |
600bf76c DDM |
384 | strv_free(p->exclude_files_source); |
385 | strv_free(p->exclude_files_target); | |
d83d8048 | 386 | strv_free(p->make_directories); |
b5b7879a DDM |
387 | free(p->verity_match_key); |
388 | ||
389 | free(p->roothash); | |
53171c04 | 390 | |
4cee8333 | 391 | free(p->split_name_format); |
a2d7c42e | 392 | unlink_and_free(p->split_path); |
4cee8333 | 393 | |
e594a3b1 LP |
394 | return mfree(p); |
395 | } | |
396 | ||
9ccceb9d YW |
397 | static void partition_foreignize(Partition *p) { |
398 | assert(p); | |
399 | assert(PARTITION_EXISTS(p)); | |
400 | ||
401 | /* Reset several parameters set through definition file to make the partition foreign. */ | |
402 | ||
9ccceb9d YW |
403 | p->definition_path = mfree(p->definition_path); |
404 | p->drop_in_files = strv_free(p->drop_in_files); | |
405 | ||
406 | p->copy_blocks_path = mfree(p->copy_blocks_path); | |
407 | p->copy_blocks_fd = safe_close(p->copy_blocks_fd); | |
585c5c75 | 408 | p->copy_blocks_root = NULL; |
9ccceb9d YW |
409 | |
410 | p->format = mfree(p->format); | |
411 | p->copy_files = strv_free(p->copy_files); | |
600bf76c DDM |
412 | p->exclude_files_source = strv_free(p->exclude_files_source); |
413 | p->exclude_files_target = strv_free(p->exclude_files_target); | |
9ccceb9d YW |
414 | p->make_directories = strv_free(p->make_directories); |
415 | p->verity_match_key = mfree(p->verity_match_key); | |
416 | ||
9ccceb9d YW |
417 | p->priority = 0; |
418 | p->weight = 1000; | |
419 | p->padding_weight = 0; | |
420 | p->size_min = UINT64_MAX; | |
421 | p->size_max = UINT64_MAX; | |
422 | p->padding_min = UINT64_MAX; | |
423 | p->padding_max = UINT64_MAX; | |
424 | p->no_auto = -1; | |
425 | p->read_only = -1; | |
426 | p->growfs = -1; | |
427 | p->verity = VERITY_OFF; | |
428 | } | |
429 | ||
821d0cf0 | 430 | static bool partition_type_exclude(GptPartitionType type) { |
81d1098b DDM |
431 | if (arg_filter_partitions_type == FILTER_PARTITIONS_NONE) |
432 | return false; | |
433 | ||
d989dd76 | 434 | for (size_t i = 0; i < arg_n_filter_partitions; i++) |
821d0cf0 | 435 | if (sd_id128_equal(type.uuid, arg_filter_partitions[i].uuid)) |
81d1098b DDM |
436 | return arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE; |
437 | ||
438 | return arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE; | |
439 | } | |
440 | ||
821d0cf0 | 441 | static bool partition_type_defer(GptPartitionType type) { |
8275334b | 442 | for (size_t i = 0; i < arg_n_defer_partitions; i++) |
821d0cf0 | 443 | if (sd_id128_equal(type.uuid, arg_defer_partitions[i].uuid)) |
7d505753 DDM |
444 | return true; |
445 | ||
446 | return false; | |
447 | } | |
448 | ||
e594a3b1 LP |
449 | static Partition* partition_unlink_and_free(Context *context, Partition *p) { |
450 | if (!p) | |
451 | return NULL; | |
452 | ||
453 | LIST_REMOVE(partitions, context->partitions, p); | |
454 | ||
455 | assert(context->n_partitions > 0); | |
456 | context->n_partitions--; | |
457 | ||
458 | return partition_free(p); | |
459 | } | |
460 | ||
461 | DEFINE_TRIVIAL_CLEANUP_FUNC(Partition*, partition_free); | |
462 | ||
463 | static Context *context_new(sd_id128_t seed) { | |
464 | Context *context; | |
465 | ||
466 | context = new(Context, 1); | |
467 | if (!context) | |
468 | return NULL; | |
469 | ||
470 | *context = (Context) { | |
471 | .start = UINT64_MAX, | |
472 | .end = UINT64_MAX, | |
473 | .total = UINT64_MAX, | |
474 | .seed = seed, | |
475 | }; | |
476 | ||
477 | return context; | |
478 | } | |
479 | ||
480 | static void context_free_free_areas(Context *context) { | |
481 | assert(context); | |
482 | ||
483 | for (size_t i = 0; i < context->n_free_areas; i++) | |
484 | free(context->free_areas[i]); | |
485 | ||
486 | context->free_areas = mfree(context->free_areas); | |
487 | context->n_free_areas = 0; | |
e594a3b1 LP |
488 | } |
489 | ||
490 | static Context *context_free(Context *context) { | |
491 | if (!context) | |
492 | return NULL; | |
493 | ||
494 | while (context->partitions) | |
495 | partition_unlink_and_free(context, context->partitions); | |
496 | assert(context->n_partitions == 0); | |
497 | ||
498 | context_free_free_areas(context); | |
499 | ||
500 | if (context->fdisk_context) | |
501 | fdisk_unref_context(context->fdisk_context); | |
502 | ||
cc751c75 | 503 | safe_close(context->backing_fd); |
db1d4e6b DDM |
504 | if (context->node_is_our_file) |
505 | unlink_and_free(context->node); | |
506 | else | |
507 | free(context->node); | |
cc751c75 | 508 | |
e594a3b1 LP |
509 | return mfree(context); |
510 | } | |
511 | ||
512 | DEFINE_TRIVIAL_CLEANUP_FUNC(Context*, context_free); | |
513 | ||
514 | static int context_add_free_area( | |
515 | Context *context, | |
516 | uint64_t size, | |
517 | Partition *after) { | |
518 | ||
519 | FreeArea *a; | |
520 | ||
521 | assert(context); | |
522 | assert(!after || !after->padding_area); | |
523 | ||
319a4f4b | 524 | if (!GREEDY_REALLOC(context->free_areas, context->n_free_areas + 1)) |
e594a3b1 LP |
525 | return -ENOMEM; |
526 | ||
527 | a = new(FreeArea, 1); | |
528 | if (!a) | |
529 | return -ENOMEM; | |
530 | ||
531 | *a = (FreeArea) { | |
532 | .size = size, | |
533 | .after = after, | |
534 | }; | |
535 | ||
536 | context->free_areas[context->n_free_areas++] = a; | |
537 | ||
538 | if (after) | |
539 | after->padding_area = a; | |
540 | ||
541 | return 0; | |
542 | } | |
543 | ||
9ccceb9d YW |
544 | static void partition_drop_or_foreignize(Partition *p) { |
545 | if (!p || p->dropped || PARTITION_IS_FOREIGN(p)) | |
546 | return; | |
547 | ||
548 | if (PARTITION_EXISTS(p)) { | |
549 | log_info("Can't grow existing partition %s of priority %" PRIi32 ", ignoring.", | |
550 | strna(p->current_label ?: p->new_label), p->priority); | |
551 | ||
552 | /* Handle the partition as foreign. Do not set dropped flag. */ | |
553 | partition_foreignize(p); | |
554 | } else { | |
555 | log_info("Can't fit partition %s of priority %" PRIi32 ", dropping.", | |
556 | p->definition_path, p->priority); | |
557 | ||
558 | p->dropped = true; | |
559 | p->allocated_to_area = NULL; | |
560 | } | |
561 | } | |
562 | ||
563 | static bool context_drop_or_foreignize_one_priority(Context *context) { | |
e594a3b1 | 564 | int32_t priority = 0; |
e594a3b1 LP |
565 | |
566 | LIST_FOREACH(partitions, p, context->partitions) { | |
567 | if (p->dropped) | |
568 | continue; | |
e594a3b1 | 569 | |
9ccceb9d | 570 | priority = MAX(priority, p->priority); |
e594a3b1 LP |
571 | } |
572 | ||
573 | /* Refuse to drop partitions with 0 or negative priorities or partitions of priorities that have at | |
574 | * least one existing priority */ | |
9ccceb9d | 575 | if (priority <= 0) |
e594a3b1 LP |
576 | return false; |
577 | ||
578 | LIST_FOREACH(partitions, p, context->partitions) { | |
579 | if (p->priority < priority) | |
580 | continue; | |
581 | ||
9ccceb9d | 582 | partition_drop_or_foreignize(p); |
b5b7879a DDM |
583 | |
584 | /* We ensure that all verity sibling partitions have the same priority, so it's safe | |
585 | * to drop all siblings here as well. */ | |
586 | ||
9ccceb9d YW |
587 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) |
588 | partition_drop_or_foreignize(p->siblings[mode]); | |
e594a3b1 LP |
589 | } |
590 | ||
591 | return true; | |
592 | } | |
593 | ||
a80701e6 | 594 | static uint64_t partition_min_size(const Context *context, const Partition *p) { |
e594a3b1 LP |
595 | uint64_t sz; |
596 | ||
994b3031 LP |
597 | assert(context); |
598 | assert(p); | |
599 | ||
e594a3b1 LP |
600 | /* Calculate the disk space we really need at minimum for this partition. If the partition already |
601 | * exists the current size is what we really need. If it doesn't exist yet refuse to allocate less | |
fb08381c LP |
602 | * than 4K. |
603 | * | |
604 | * DEFAULT_MIN_SIZE is the default SizeMin= we configure if nothing else is specified. */ | |
e594a3b1 LP |
605 | |
606 | if (PARTITION_IS_FOREIGN(p)) { | |
607 | /* Don't allow changing size of partitions not managed by us */ | |
608 | assert(p->current_size != UINT64_MAX); | |
609 | return p->current_size; | |
610 | } | |
611 | ||
b456191d DDM |
612 | if (p->verity == VERITY_SIG) |
613 | return VERITY_SIG_SIZE; | |
614 | ||
fb08381c | 615 | sz = p->current_size != UINT64_MAX ? p->current_size : HARD_MIN_SIZE; |
757bc2e4 | 616 | |
170c9823 LP |
617 | if (!PARTITION_EXISTS(p)) { |
618 | uint64_t d = 0; | |
619 | ||
889914ef | 620 | if (p->encrypt != ENCRYPT_OFF) |
48a09a8f | 621 | d += round_up_size(LUKS2_METADATA_KEEP_FREE, context->grain_size); |
170c9823 LP |
622 | |
623 | if (p->copy_blocks_size != UINT64_MAX) | |
994b3031 | 624 | d += round_up_size(p->copy_blocks_size, context->grain_size); |
889914ef | 625 | else if (p->format || p->encrypt != ENCRYPT_OFF) { |
170c9823 LP |
626 | uint64_t f; |
627 | ||
628 | /* If we shall synthesize a file system, take minimal fs size into account (assumed to be 4K if not known) */ | |
994b3031 LP |
629 | f = p->format ? round_up_size(minimal_size_by_fs_name(p->format), context->grain_size) : UINT64_MAX; |
630 | d += f == UINT64_MAX ? context->grain_size : f; | |
170c9823 LP |
631 | } |
632 | ||
633 | if (d > sz) | |
634 | sz = d; | |
635 | } | |
757bc2e4 | 636 | |
994b3031 | 637 | return MAX(round_up_size(p->size_min != UINT64_MAX ? p->size_min : DEFAULT_MIN_SIZE, context->grain_size), sz); |
e594a3b1 LP |
638 | } |
639 | ||
994b3031 LP |
640 | static uint64_t partition_max_size(const Context *context, const Partition *p) { |
641 | uint64_t sm; | |
642 | ||
e594a3b1 LP |
643 | /* Calculate how large the partition may become at max. This is generally the configured maximum |
644 | * size, except when it already exists and is larger than that. In that case it's the existing size, | |
645 | * since we never want to shrink partitions. */ | |
646 | ||
994b3031 LP |
647 | assert(context); |
648 | assert(p); | |
649 | ||
e594a3b1 LP |
650 | if (PARTITION_IS_FOREIGN(p)) { |
651 | /* Don't allow changing size of partitions not managed by us */ | |
652 | assert(p->current_size != UINT64_MAX); | |
653 | return p->current_size; | |
654 | } | |
655 | ||
b456191d DDM |
656 | if (p->verity == VERITY_SIG) |
657 | return VERITY_SIG_SIZE; | |
658 | ||
822d9b9a YW |
659 | if (p->size_max == UINT64_MAX) |
660 | return UINT64_MAX; | |
661 | ||
994b3031 LP |
662 | sm = round_down_size(p->size_max, context->grain_size); |
663 | ||
e594a3b1 | 664 | if (p->current_size != UINT64_MAX) |
b0fbf90b | 665 | sm = MAX(p->current_size, sm); |
e594a3b1 | 666 | |
b0fbf90b | 667 | return MAX(partition_min_size(context, p), sm); |
e594a3b1 LP |
668 | } |
669 | ||
a801bb01 YW |
670 | static uint64_t partition_min_padding(const Partition *p) { |
671 | assert(p); | |
672 | return p->padding_min != UINT64_MAX ? p->padding_min : 0; | |
673 | } | |
674 | ||
675 | static uint64_t partition_max_padding(const Partition *p) { | |
676 | assert(p); | |
677 | return p->padding_max; | |
678 | } | |
679 | ||
994b3031 | 680 | static uint64_t partition_min_size_with_padding(Context *context, const Partition *p) { |
e594a3b1 LP |
681 | uint64_t sz; |
682 | ||
683 | /* Calculate the disk space we need for this partition plus any free space coming after it. This | |
684 | * takes user configured padding into account as well as any additional whitespace needed to align | |
685 | * the next partition to 4K again. */ | |
686 | ||
994b3031 LP |
687 | assert(context); |
688 | assert(p); | |
689 | ||
a801bb01 | 690 | sz = partition_min_size(context, p) + partition_min_padding(p); |
e594a3b1 LP |
691 | |
692 | if (PARTITION_EXISTS(p)) { | |
693 | /* If the partition wasn't aligned, add extra space so that any we might add will be aligned */ | |
694 | assert(p->offset != UINT64_MAX); | |
994b3031 | 695 | return round_up_size(p->offset + sz, context->grain_size) - p->offset; |
e594a3b1 LP |
696 | } |
697 | ||
698 | /* If this is a new partition we'll place it aligned, hence we just need to round up the required size here */ | |
994b3031 | 699 | return round_up_size(sz, context->grain_size); |
e594a3b1 LP |
700 | } |
701 | ||
702 | static uint64_t free_area_available(const FreeArea *a) { | |
703 | assert(a); | |
704 | ||
705 | /* Determines how much of this free area is not allocated yet */ | |
706 | ||
707 | assert(a->size >= a->allocated); | |
708 | return a->size - a->allocated; | |
709 | } | |
710 | ||
58b06ac1 | 711 | static uint64_t free_area_current_end(Context *context, const FreeArea *a) { |
994b3031 LP |
712 | assert(context); |
713 | assert(a); | |
714 | ||
58b06ac1 YW |
715 | if (!a->after) |
716 | return free_area_available(a); | |
e594a3b1 | 717 | |
58b06ac1 YW |
718 | assert(a->after->offset != UINT64_MAX); |
719 | assert(a->after->current_size != UINT64_MAX); | |
e594a3b1 | 720 | |
58b06ac1 YW |
721 | /* Calculate where the free area ends, based on the offset of the partition preceding it. */ |
722 | return round_up_size(a->after->offset + a->after->current_size, context->grain_size) + free_area_available(a); | |
723 | } | |
e594a3b1 | 724 | |
58b06ac1 YW |
725 | static uint64_t free_area_min_end(Context *context, const FreeArea *a) { |
726 | assert(context); | |
727 | assert(a); | |
e594a3b1 | 728 | |
58b06ac1 YW |
729 | if (!a->after) |
730 | return 0; | |
e594a3b1 | 731 | |
58b06ac1 YW |
732 | assert(a->after->offset != UINT64_MAX); |
733 | assert(a->after->current_size != UINT64_MAX); | |
1052a114 | 734 | |
58b06ac1 YW |
735 | /* Calculate where the partition would end when we give it as much as it needs. */ |
736 | return round_up_size(a->after->offset + partition_min_size_with_padding(context, a->after), context->grain_size); | |
737 | } | |
738 | ||
739 | static uint64_t free_area_available_for_new_partitions(Context *context, const FreeArea *a) { | |
740 | assert(context); | |
741 | assert(a); | |
742 | ||
743 | /* Similar to free_area_available(), but takes into account that the required size and padding of the | |
744 | * preceding partition is honoured. */ | |
e594a3b1 | 745 | |
58b06ac1 | 746 | return LESS_BY(free_area_current_end(context, a), free_area_min_end(context, a)); |
e594a3b1 LP |
747 | } |
748 | ||
994b3031 LP |
749 | static int free_area_compare(FreeArea *const *a, FreeArea *const*b, Context *context) { |
750 | assert(context); | |
751 | ||
752 | return CMP(free_area_available_for_new_partitions(context, *a), | |
753 | free_area_available_for_new_partitions(context, *b)); | |
e594a3b1 LP |
754 | } |
755 | ||
994b3031 LP |
756 | static uint64_t charge_size(Context *context, uint64_t total, uint64_t amount) { |
757 | assert(context); | |
e594a3b1 | 758 | /* Subtract the specified amount from total, rounding up to multiple of 4K if there's room */ |
184cf99a | 759 | assert(amount <= total); |
994b3031 | 760 | return LESS_BY(total, round_up_size(amount, context->grain_size)); |
e594a3b1 LP |
761 | } |
762 | ||
763 | static uint64_t charge_weight(uint64_t total, uint64_t amount) { | |
764 | assert(amount <= total); | |
765 | return total - amount; | |
766 | } | |
767 | ||
14a4c4ed | 768 | static bool context_allocate_partitions(Context *context, uint64_t *ret_largest_free_area) { |
e594a3b1 LP |
769 | assert(context); |
770 | ||
f39cf264 YW |
771 | /* This may be called multiple times. Reset previous assignments. */ |
772 | for (size_t i = 0; i < context->n_free_areas; i++) | |
773 | context->free_areas[i]->allocated = 0; | |
774 | ||
14a4c4ed | 775 | /* Sort free areas by size, putting smallest first */ |
994b3031 | 776 | typesafe_qsort_r(context->free_areas, context->n_free_areas, free_area_compare, context); |
e594a3b1 | 777 | |
14a4c4ed LP |
778 | /* In any case return size of the largest free area (i.e. not the size of all free areas |
779 | * combined!) */ | |
780 | if (ret_largest_free_area) | |
781 | *ret_largest_free_area = | |
782 | context->n_free_areas == 0 ? 0 : | |
994b3031 | 783 | free_area_available_for_new_partitions(context, context->free_areas[context->n_free_areas-1]); |
14a4c4ed | 784 | |
cdbcc339 YW |
785 | /* Check that each existing partition can fit its area. */ |
786 | for (size_t i = 0; i < context->n_free_areas; i++) | |
787 | if (free_area_current_end(context, context->free_areas[i]) < | |
788 | free_area_min_end(context, context->free_areas[i])) | |
789 | return false; | |
790 | ||
14a4c4ed | 791 | /* A simple first-fit algorithm. We return true if we can fit the partitions in, otherwise false. */ |
e594a3b1 LP |
792 | LIST_FOREACH(partitions, p, context->partitions) { |
793 | bool fits = false; | |
794 | uint64_t required; | |
795 | FreeArea *a = NULL; | |
796 | ||
797 | /* Skip partitions we already dropped or that already exist */ | |
798 | if (p->dropped || PARTITION_EXISTS(p)) | |
799 | continue; | |
800 | ||
e594a3b1 | 801 | /* How much do we need to fit? */ |
994b3031 LP |
802 | required = partition_min_size_with_padding(context, p); |
803 | assert(required % context->grain_size == 0); | |
e594a3b1 LP |
804 | |
805 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
806 | a = context->free_areas[i]; | |
807 | ||
994b3031 | 808 | if (free_area_available_for_new_partitions(context, a) >= required) { |
e594a3b1 LP |
809 | fits = true; |
810 | break; | |
811 | } | |
812 | } | |
813 | ||
814 | if (!fits) | |
815 | return false; /* 😢 Oh no! We can't fit this partition into any free area! */ | |
816 | ||
817 | /* Assign the partition to this free area */ | |
818 | p->allocated_to_area = a; | |
819 | ||
820 | /* Budget the minimal partition size */ | |
821 | a->allocated += required; | |
822 | } | |
823 | ||
824 | return true; | |
825 | } | |
826 | ||
827 | static int context_sum_weights(Context *context, FreeArea *a, uint64_t *ret) { | |
828 | uint64_t weight_sum = 0; | |
e594a3b1 LP |
829 | |
830 | assert(context); | |
831 | assert(a); | |
832 | assert(ret); | |
833 | ||
834 | /* Determine the sum of the weights of all partitions placed in or before the specified free area */ | |
835 | ||
836 | LIST_FOREACH(partitions, p, context->partitions) { | |
837 | if (p->padding_area != a && p->allocated_to_area != a) | |
838 | continue; | |
839 | ||
840 | if (p->weight > UINT64_MAX - weight_sum) | |
841 | goto overflow_sum; | |
842 | weight_sum += p->weight; | |
843 | ||
844 | if (p->padding_weight > UINT64_MAX - weight_sum) | |
845 | goto overflow_sum; | |
846 | weight_sum += p->padding_weight; | |
847 | } | |
848 | ||
849 | *ret = weight_sum; | |
850 | return 0; | |
851 | ||
852 | overflow_sum: | |
da890466 | 853 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Combined weight of partition exceeds unsigned 64-bit range, refusing."); |
e594a3b1 LP |
854 | } |
855 | ||
0245e15a | 856 | static uint64_t scale_by_weight(uint64_t value, uint64_t weight, uint64_t weight_sum) { |
e594a3b1 | 857 | assert(weight_sum >= weight); |
e594a3b1 | 858 | |
0245e15a YW |
859 | for (;;) { |
860 | if (weight == 0) | |
861 | return 0; | |
862 | if (weight == weight_sum) | |
863 | return value; | |
864 | if (value <= UINT64_MAX / weight) | |
865 | return value * weight / weight_sum; | |
866 | ||
867 | /* Rescale weight and weight_sum to make not the calculation overflow. To satisfy the | |
868 | * following conditions, 'weight_sum' is rounded up but 'weight' is rounded down: | |
869 | * - the sum of scale_by_weight() for all weights must not be larger than the input value, | |
870 | * - scale_by_weight() must not be larger than the ideal value (i.e. calculated with uint128_t). */ | |
871 | weight_sum = DIV_ROUND_UP(weight_sum, 2); | |
872 | weight /= 2; | |
e594a3b1 | 873 | } |
e594a3b1 LP |
874 | } |
875 | ||
876 | typedef enum GrowPartitionPhase { | |
bf99aed6 YW |
877 | /* The zeroth phase: do not touch foreign partitions (i.e. those we don't manage). */ |
878 | PHASE_FOREIGN, | |
879 | ||
e594a3b1 LP |
880 | /* The first phase: we charge partitions which need more (according to constraints) than their weight-based share. */ |
881 | PHASE_OVERCHARGE, | |
882 | ||
883 | /* The second phase: we charge partitions which need less (according to constraints) than their weight-based share. */ | |
884 | PHASE_UNDERCHARGE, | |
885 | ||
886 | /* The third phase: we distribute what remains among the remaining partitions, according to the weights */ | |
887 | PHASE_DISTRIBUTE, | |
ae0613c6 LP |
888 | |
889 | _GROW_PARTITION_PHASE_MAX, | |
e594a3b1 LP |
890 | } GrowPartitionPhase; |
891 | ||
0245e15a | 892 | static bool context_grow_partitions_phase( |
e594a3b1 LP |
893 | Context *context, |
894 | FreeArea *a, | |
895 | GrowPartitionPhase phase, | |
896 | uint64_t *span, | |
897 | uint64_t *weight_sum) { | |
898 | ||
2a503ad2 YW |
899 | bool try_again = false; |
900 | ||
e594a3b1 LP |
901 | assert(context); |
902 | assert(a); | |
0245e15a YW |
903 | assert(span); |
904 | assert(weight_sum); | |
e594a3b1 LP |
905 | |
906 | /* Now let's look at the intended weights and adjust them taking the minimum space assignments into | |
907 | * account. i.e. if a partition has a small weight but a high minimum space value set it should not | |
908 | * get any additional room from the left-overs. Similar, if two partitions have the same weight they | |
909 | * should get the same space if possible, even if one has a smaller minimum size than the other. */ | |
910 | LIST_FOREACH(partitions, p, context->partitions) { | |
911 | ||
912 | /* Look only at partitions associated with this free area, i.e. immediately | |
162392b7 | 913 | * preceding it, or allocated into it */ |
e594a3b1 LP |
914 | if (p->allocated_to_area != a && p->padding_area != a) |
915 | continue; | |
916 | ||
917 | if (p->new_size == UINT64_MAX) { | |
e594a3b1 | 918 | uint64_t share, rsz, xsz; |
2a503ad2 | 919 | bool charge = false; |
e594a3b1 LP |
920 | |
921 | /* Calculate how much this space this partition needs if everyone would get | |
922 | * the weight based share */ | |
0245e15a | 923 | share = scale_by_weight(*span, p->weight, *weight_sum); |
e594a3b1 | 924 | |
994b3031 LP |
925 | rsz = partition_min_size(context, p); |
926 | xsz = partition_max_size(context, p); | |
e594a3b1 | 927 | |
bf99aed6 YW |
928 | if (phase == PHASE_FOREIGN && PARTITION_IS_FOREIGN(p)) { |
929 | /* Never change of foreign partitions (i.e. those we don't manage) */ | |
930 | ||
931 | p->new_size = p->current_size; | |
932 | charge = true; | |
933 | ||
934 | } else if (phase == PHASE_OVERCHARGE && rsz > share) { | |
e594a3b1 LP |
935 | /* This partition needs more than its calculated share. Let's assign |
936 | * it that, and take this partition out of all calculations and start | |
937 | * again. */ | |
938 | ||
939 | p->new_size = rsz; | |
940 | charge = try_again = true; | |
941 | ||
822d9b9a | 942 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
e594a3b1 LP |
943 | /* This partition accepts less than its calculated |
944 | * share. Let's assign it that, and take this partition out | |
945 | * of all calculations and start again. */ | |
946 | ||
947 | p->new_size = xsz; | |
948 | charge = try_again = true; | |
949 | ||
950 | } else if (phase == PHASE_DISTRIBUTE) { | |
951 | /* This partition can accept its calculated share. Let's | |
952 | * assign it. There's no need to restart things here since | |
953 | * assigning this shouldn't impact the shares of the other | |
954 | * partitions. */ | |
955 | ||
d7c46b5e YW |
956 | assert(share >= rsz); |
957 | p->new_size = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
958 | charge = true; |
959 | } | |
960 | ||
961 | if (charge) { | |
994b3031 | 962 | *span = charge_size(context, *span, p->new_size); |
e594a3b1 LP |
963 | *weight_sum = charge_weight(*weight_sum, p->weight); |
964 | } | |
e594a3b1 LP |
965 | } |
966 | ||
967 | if (p->new_padding == UINT64_MAX) { | |
a801bb01 | 968 | uint64_t share, rsz, xsz; |
2a503ad2 | 969 | bool charge = false; |
e594a3b1 | 970 | |
0245e15a | 971 | share = scale_by_weight(*span, p->padding_weight, *weight_sum); |
e594a3b1 | 972 | |
a801bb01 YW |
973 | rsz = partition_min_padding(p); |
974 | xsz = partition_max_padding(p); | |
975 | ||
976 | if (phase == PHASE_OVERCHARGE && rsz > share) { | |
977 | p->new_padding = rsz; | |
e594a3b1 | 978 | charge = try_again = true; |
a801bb01 YW |
979 | } else if (phase == PHASE_UNDERCHARGE && xsz < share) { |
980 | p->new_padding = xsz; | |
e594a3b1 LP |
981 | charge = try_again = true; |
982 | } else if (phase == PHASE_DISTRIBUTE) { | |
d7c46b5e YW |
983 | assert(share >= rsz); |
984 | p->new_padding = CLAMP(round_down_size(share, context->grain_size), rsz, xsz); | |
e594a3b1 LP |
985 | charge = true; |
986 | } | |
987 | ||
988 | if (charge) { | |
994b3031 | 989 | *span = charge_size(context, *span, p->new_padding); |
e594a3b1 LP |
990 | *weight_sum = charge_weight(*weight_sum, p->padding_weight); |
991 | } | |
e594a3b1 LP |
992 | } |
993 | } | |
994 | ||
2a503ad2 | 995 | return !try_again; |
e594a3b1 LP |
996 | } |
997 | ||
19903a43 YW |
998 | static void context_grow_partition_one(Context *context, FreeArea *a, Partition *p, uint64_t *span) { |
999 | uint64_t m; | |
1000 | ||
1001 | assert(context); | |
1002 | assert(a); | |
1003 | assert(p); | |
1004 | assert(span); | |
1005 | ||
1006 | if (*span == 0) | |
1007 | return; | |
1008 | ||
1009 | if (p->allocated_to_area != a) | |
1010 | return; | |
1011 | ||
1012 | if (PARTITION_IS_FOREIGN(p)) | |
1013 | return; | |
1014 | ||
1015 | assert(p->new_size != UINT64_MAX); | |
1016 | ||
1017 | /* Calculate new size and align. */ | |
1018 | m = round_down_size(p->new_size + *span, context->grain_size); | |
1019 | /* But ensure this doesn't shrink the size. */ | |
1020 | m = MAX(m, p->new_size); | |
1021 | /* And ensure this doesn't exceed the maximum size. */ | |
1022 | m = MIN(m, partition_max_size(context, p)); | |
1023 | ||
1024 | assert(m >= p->new_size); | |
1025 | ||
1026 | *span = charge_size(context, *span, m - p->new_size); | |
1027 | p->new_size = m; | |
1028 | } | |
1029 | ||
e594a3b1 LP |
1030 | static int context_grow_partitions_on_free_area(Context *context, FreeArea *a) { |
1031 | uint64_t weight_sum = 0, span; | |
1032 | int r; | |
1033 | ||
1034 | assert(context); | |
1035 | assert(a); | |
1036 | ||
1037 | r = context_sum_weights(context, a, &weight_sum); | |
1038 | if (r < 0) | |
1039 | return r; | |
1040 | ||
1041 | /* Let's calculate the total area covered by this free area and the partition before it */ | |
1042 | span = a->size; | |
1043 | if (a->after) { | |
1044 | assert(a->after->offset != UINT64_MAX); | |
1045 | assert(a->after->current_size != UINT64_MAX); | |
1046 | ||
994b3031 | 1047 | span += round_up_size(a->after->offset + a->after->current_size, context->grain_size) - a->after->offset; |
e594a3b1 LP |
1048 | } |
1049 | ||
0245e15a YW |
1050 | for (GrowPartitionPhase phase = 0; phase < _GROW_PARTITION_PHASE_MAX;) |
1051 | if (context_grow_partitions_phase(context, a, phase, &span, &weight_sum)) | |
1052 | phase++; /* go to the next phase */ | |
e594a3b1 | 1053 | |
162392b7 | 1054 | /* We still have space left over? Donate to preceding partition if we have one */ |
19903a43 YW |
1055 | if (span > 0 && a->after) |
1056 | context_grow_partition_one(context, a, a->after, &span); | |
e594a3b1 | 1057 | |
162392b7 | 1058 | /* What? Even still some space left (maybe because there was no preceding partition, or it had a |
e594a3b1 | 1059 | * size limit), then let's donate it to whoever wants it. */ |
03677889 | 1060 | if (span > 0) |
e594a3b1 | 1061 | LIST_FOREACH(partitions, p, context->partitions) { |
19903a43 | 1062 | context_grow_partition_one(context, a, p, &span); |
e594a3b1 LP |
1063 | if (span == 0) |
1064 | break; | |
1065 | } | |
e594a3b1 | 1066 | |
162392b7 | 1067 | /* Yuck, still no one? Then make it padding */ |
e594a3b1 LP |
1068 | if (span > 0 && a->after) { |
1069 | assert(a->after->new_padding != UINT64_MAX); | |
1070 | a->after->new_padding += span; | |
1071 | } | |
1072 | ||
1073 | return 0; | |
1074 | } | |
1075 | ||
1076 | static int context_grow_partitions(Context *context) { | |
e594a3b1 LP |
1077 | int r; |
1078 | ||
1079 | assert(context); | |
1080 | ||
1081 | for (size_t i = 0; i < context->n_free_areas; i++) { | |
1082 | r = context_grow_partitions_on_free_area(context, context->free_areas[i]); | |
1083 | if (r < 0) | |
1084 | return r; | |
1085 | } | |
1086 | ||
1087 | /* All existing partitions that have no free space after them can't change size */ | |
1088 | LIST_FOREACH(partitions, p, context->partitions) { | |
1089 | if (p->dropped) | |
1090 | continue; | |
1091 | ||
1092 | if (!PARTITION_EXISTS(p) || p->padding_area) { | |
1093 | /* The algorithm above must have initialized this already */ | |
1094 | assert(p->new_size != UINT64_MAX); | |
1095 | continue; | |
1096 | } | |
1097 | ||
1098 | assert(p->new_size == UINT64_MAX); | |
1099 | p->new_size = p->current_size; | |
1100 | ||
1101 | assert(p->new_padding == UINT64_MAX); | |
1102 | p->new_padding = p->current_padding; | |
1103 | } | |
1104 | ||
1105 | return 0; | |
1106 | } | |
1107 | ||
00428745 | 1108 | static uint64_t find_first_unused_partno(Context *context) { |
e594a3b1 | 1109 | uint64_t partno = 0; |
e594a3b1 LP |
1110 | |
1111 | assert(context); | |
1112 | ||
5f59807d DDM |
1113 | for (partno = 0;; partno++) { |
1114 | bool found = false; | |
1115 | LIST_FOREACH(partitions, p, context->partitions) | |
1116 | if (p->partno != UINT64_MAX && p->partno == partno) | |
1117 | found = true; | |
1118 | if (!found) | |
1119 | break; | |
e594a3b1 LP |
1120 | } |
1121 | ||
00428745 DDM |
1122 | return partno; |
1123 | } | |
1124 | ||
1125 | static void context_place_partitions(Context *context) { | |
1126 | ||
1127 | assert(context); | |
1128 | ||
e594a3b1 LP |
1129 | for (size_t i = 0; i < context->n_free_areas; i++) { |
1130 | FreeArea *a = context->free_areas[i]; | |
2ea7eb00 FS |
1131 | _unused_ uint64_t left; |
1132 | uint64_t start; | |
e594a3b1 LP |
1133 | |
1134 | if (a->after) { | |
1135 | assert(a->after->offset != UINT64_MAX); | |
1136 | assert(a->after->new_size != UINT64_MAX); | |
1137 | assert(a->after->new_padding != UINT64_MAX); | |
1138 | ||
1139 | start = a->after->offset + a->after->new_size + a->after->new_padding; | |
1140 | } else | |
1141 | start = context->start; | |
1142 | ||
994b3031 | 1143 | start = round_up_size(start, context->grain_size); |
e594a3b1 LP |
1144 | left = a->size; |
1145 | ||
1146 | LIST_FOREACH(partitions, p, context->partitions) { | |
1147 | if (p->allocated_to_area != a) | |
1148 | continue; | |
1149 | ||
1150 | p->offset = start; | |
00428745 | 1151 | p->partno = find_first_unused_partno(context); |
e594a3b1 LP |
1152 | |
1153 | assert(left >= p->new_size); | |
1154 | start += p->new_size; | |
1155 | left -= p->new_size; | |
1156 | ||
1157 | assert(left >= p->new_padding); | |
1158 | start += p->new_padding; | |
1159 | left -= p->new_padding; | |
1160 | } | |
1161 | } | |
1162 | } | |
1163 | ||
e594a3b1 LP |
1164 | static int config_parse_type( |
1165 | const char *unit, | |
1166 | const char *filename, | |
1167 | unsigned line, | |
1168 | const char *section, | |
1169 | unsigned section_line, | |
1170 | const char *lvalue, | |
1171 | int ltype, | |
1172 | const char *rvalue, | |
1173 | void *data, | |
1174 | void *userdata) { | |
1175 | ||
22e932f4 | 1176 | GptPartitionType *type = ASSERT_PTR(data); |
e594a3b1 LP |
1177 | int r; |
1178 | ||
1179 | assert(rvalue); | |
e594a3b1 | 1180 | |
22e932f4 | 1181 | r = gpt_partition_type_from_string(rvalue, type); |
e594a3b1 LP |
1182 | if (r < 0) |
1183 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse partition type: %s", rvalue); | |
1184 | ||
9786dfe6 DDM |
1185 | if (arg_architecture >= 0) |
1186 | *type = gpt_partition_type_override_architecture(*type, arg_architecture); | |
1187 | ||
e594a3b1 LP |
1188 | return 0; |
1189 | } | |
1190 | ||
1191 | static int config_parse_label( | |
1192 | const char *unit, | |
1193 | const char *filename, | |
1194 | unsigned line, | |
1195 | const char *section, | |
1196 | unsigned section_line, | |
1197 | const char *lvalue, | |
1198 | int ltype, | |
1199 | const char *rvalue, | |
1200 | void *data, | |
1201 | void *userdata) { | |
1202 | ||
e031166e | 1203 | _cleanup_free_ char *resolved = NULL; |
99534007 | 1204 | char **label = ASSERT_PTR(data); |
e594a3b1 LP |
1205 | int r; |
1206 | ||
1207 | assert(rvalue); | |
e594a3b1 | 1208 | |
be9ce018 LP |
1209 | /* Nota bene: the empty label is a totally valid one. Let's hence not follow our usual rule of |
1210 | * assigning the empty string to reset to default here, but really accept it as label to set. */ | |
1211 | ||
de61a04b | 1212 | r = specifier_printf(rvalue, GPT_LABEL_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved); |
e031166e | 1213 | if (r < 0) { |
e459258f | 1214 | log_syntax(unit, LOG_WARNING, filename, line, r, |
e031166e LP |
1215 | "Failed to expand specifiers in Label=, ignoring: %s", rvalue); |
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | if (!utf8_is_valid(resolved)) { | |
e594a3b1 LP |
1220 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1221 | "Partition label not valid UTF-8, ignoring: %s", rvalue); | |
1222 | return 0; | |
1223 | } | |
1224 | ||
22a0a36e LP |
1225 | r = gpt_partition_label_valid(resolved); |
1226 | if (r < 0) { | |
1227 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1228 | "Failed to check if string is valid as GPT partition label, ignoring: \"%s\" (from \"%s\")", | |
1229 | resolved, rvalue); | |
1230 | return 0; | |
1231 | } | |
1232 | if (!r) { | |
e594a3b1 | 1233 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
46072ae3 ZJS |
1234 | "Partition label too long for GPT table, ignoring: \"%s\" (from \"%s\")", |
1235 | resolved, rvalue); | |
e594a3b1 LP |
1236 | return 0; |
1237 | } | |
1238 | ||
e031166e | 1239 | free_and_replace(*label, resolved); |
e594a3b1 LP |
1240 | return 0; |
1241 | } | |
1242 | ||
1243 | static int config_parse_weight( | |
1244 | const char *unit, | |
1245 | const char *filename, | |
1246 | unsigned line, | |
1247 | const char *section, | |
1248 | unsigned section_line, | |
1249 | const char *lvalue, | |
1250 | int ltype, | |
1251 | const char *rvalue, | |
1252 | void *data, | |
1253 | void *userdata) { | |
1254 | ||
f126038f | 1255 | uint32_t *w = ASSERT_PTR(data), v; |
e594a3b1 LP |
1256 | int r; |
1257 | ||
1258 | assert(rvalue); | |
e594a3b1 LP |
1259 | |
1260 | r = safe_atou32(rvalue, &v); | |
1261 | if (r < 0) { | |
1262 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1263 | "Failed to parse weight value, ignoring: %s", rvalue); | |
1264 | return 0; | |
1265 | } | |
1266 | ||
1267 | if (v > 1000U*1000U) { | |
c8f3d767 | 1268 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
e594a3b1 LP |
1269 | "Weight needs to be in range 0…10000000, ignoring: %" PRIu32, v); |
1270 | return 0; | |
1271 | } | |
1272 | ||
f126038f | 1273 | *w = v; |
e594a3b1 LP |
1274 | return 0; |
1275 | } | |
1276 | ||
1277 | static int config_parse_size4096( | |
1278 | const char *unit, | |
1279 | const char *filename, | |
1280 | unsigned line, | |
1281 | const char *section, | |
1282 | unsigned section_line, | |
1283 | const char *lvalue, | |
1284 | int ltype, | |
1285 | const char *rvalue, | |
1286 | void *data, | |
1287 | void *userdata) { | |
1288 | ||
1289 | uint64_t *sz = data, parsed; | |
1290 | int r; | |
1291 | ||
1292 | assert(rvalue); | |
1293 | assert(data); | |
1294 | ||
1295 | r = parse_size(rvalue, 1024, &parsed); | |
1296 | if (r < 0) | |
c8f3d767 | 1297 | return log_syntax(unit, LOG_ERR, filename, line, r, |
e594a3b1 LP |
1298 | "Failed to parse size value: %s", rvalue); |
1299 | ||
1300 | if (ltype > 0) | |
1301 | *sz = round_up_size(parsed, 4096); | |
1302 | else if (ltype < 0) | |
1303 | *sz = round_down_size(parsed, 4096); | |
1304 | else | |
1305 | *sz = parsed; | |
1306 | ||
1307 | if (*sz != parsed) | |
e2341b6b DT |
1308 | log_syntax(unit, LOG_NOTICE, filename, line, r, "Rounded %s= size %" PRIu64 " %s %" PRIu64 ", a multiple of 4096.", |
1309 | lvalue, parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), *sz); | |
e594a3b1 LP |
1310 | |
1311 | return 0; | |
1312 | } | |
1313 | ||
53171c04 LP |
1314 | static int config_parse_fstype( |
1315 | const char *unit, | |
1316 | const char *filename, | |
1317 | unsigned line, | |
1318 | const char *section, | |
1319 | unsigned section_line, | |
1320 | const char *lvalue, | |
1321 | int ltype, | |
1322 | const char *rvalue, | |
1323 | void *data, | |
1324 | void *userdata) { | |
1325 | ||
99534007 | 1326 | char **fstype = ASSERT_PTR(data); |
53171c04 LP |
1327 | |
1328 | assert(rvalue); | |
53171c04 LP |
1329 | |
1330 | if (!filename_is_valid(rvalue)) | |
1331 | return log_syntax(unit, LOG_ERR, filename, line, 0, | |
1332 | "File system type is not valid, refusing: %s", rvalue); | |
1333 | ||
1334 | return free_and_strdup_warn(fstype, rvalue); | |
1335 | } | |
1336 | ||
8a794850 LP |
1337 | static int config_parse_copy_files( |
1338 | const char *unit, | |
1339 | const char *filename, | |
1340 | unsigned line, | |
1341 | const char *section, | |
1342 | unsigned section_line, | |
1343 | const char *lvalue, | |
1344 | int ltype, | |
1345 | const char *rvalue, | |
1346 | void *data, | |
1347 | void *userdata) { | |
1348 | ||
1349 | _cleanup_free_ char *source = NULL, *buffer = NULL, *resolved_source = NULL, *resolved_target = NULL; | |
1350 | const char *p = rvalue, *target; | |
de98e6a7 | 1351 | char ***copy_files = ASSERT_PTR(data); |
8a794850 LP |
1352 | int r; |
1353 | ||
1354 | assert(rvalue); | |
8a794850 LP |
1355 | |
1356 | r = extract_first_word(&p, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1357 | if (r < 0) | |
1358 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract source path: %s", rvalue); | |
1359 | if (r == 0) { | |
1360 | log_syntax(unit, LOG_WARNING, filename, line, 0, "No argument specified: %s", rvalue); | |
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | r = extract_first_word(&p, &buffer, ":", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
1365 | if (r < 0) | |
1366 | return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract target path: %s", rvalue); | |
1367 | if (r == 0) | |
1368 | target = source; /* No target, then it's the same as the source */ | |
1369 | else | |
1370 | target = buffer; | |
1371 | ||
1372 | if (!isempty(p)) | |
1373 | return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Too many arguments: %s", rvalue); | |
1374 | ||
de61a04b | 1375 | r = specifier_printf(source, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_source); |
8a794850 LP |
1376 | if (r < 0) { |
1377 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1378 | "Failed to expand specifiers in CopyFiles= source, ignoring: %s", rvalue); | |
1379 | return 0; | |
1380 | } | |
1381 | ||
0ade2213 LP |
1382 | r = path_simplify_and_warn(resolved_source, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1383 | if (r < 0) | |
8a794850 | 1384 | return 0; |
8a794850 | 1385 | |
de61a04b | 1386 | r = specifier_printf(target, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_target); |
8a794850 LP |
1387 | if (r < 0) { |
1388 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1389 | "Failed to expand specifiers in CopyFiles= target, ignoring: %s", resolved_target); | |
1390 | return 0; | |
1391 | } | |
1392 | ||
0ade2213 LP |
1393 | r = path_simplify_and_warn(resolved_target, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); |
1394 | if (r < 0) | |
8a794850 | 1395 | return 0; |
8a794850 | 1396 | |
de98e6a7 | 1397 | r = strv_consume_pair(copy_files, TAKE_PTR(resolved_source), TAKE_PTR(resolved_target)); |
8a794850 LP |
1398 | if (r < 0) |
1399 | return log_oom(); | |
1400 | ||
1401 | return 0; | |
1402 | } | |
1403 | ||
a9af8276 DDM |
1404 | static int config_parse_exclude_files( |
1405 | const char *unit, | |
1406 | const char *filename, | |
1407 | unsigned line, | |
1408 | const char *section, | |
1409 | unsigned section_line, | |
1410 | const char *lvalue, | |
1411 | int ltype, | |
1412 | const char *rvalue, | |
1413 | void *data, | |
1414 | void *userdata) { | |
1415 | _cleanup_free_ char *resolved = NULL; | |
1416 | char ***exclude_files = ASSERT_PTR(data); | |
1417 | int r; | |
1418 | ||
1419 | if (isempty(rvalue)) { | |
1420 | *exclude_files = strv_free(*exclude_files); | |
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved); | |
1425 | if (r < 0) { | |
1426 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1427 | "Failed to expand specifiers in ExcludeFiles= path, ignoring: %s", rvalue); | |
1428 | return 0; | |
1429 | } | |
1430 | ||
1431 | r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
8a794850 | 1432 | if (r < 0) |
a9af8276 DDM |
1433 | return 0; |
1434 | ||
1435 | if (strv_consume(exclude_files, TAKE_PTR(resolved)) < 0) | |
8a794850 LP |
1436 | return log_oom(); |
1437 | ||
1438 | return 0; | |
1439 | } | |
1440 | ||
5c08da58 LP |
1441 | static int config_parse_copy_blocks( |
1442 | const char *unit, | |
1443 | const char *filename, | |
1444 | unsigned line, | |
1445 | const char *section, | |
1446 | unsigned section_line, | |
1447 | const char *lvalue, | |
1448 | int ltype, | |
1449 | const char *rvalue, | |
1450 | void *data, | |
1451 | void *userdata) { | |
1452 | ||
1453 | _cleanup_free_ char *d = NULL; | |
99534007 | 1454 | Partition *partition = ASSERT_PTR(data); |
5c08da58 LP |
1455 | int r; |
1456 | ||
1457 | assert(rvalue); | |
5c08da58 LP |
1458 | |
1459 | if (isempty(rvalue)) { | |
1460 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1461 | partition->copy_blocks_auto = false; | |
1462 | return 0; | |
1463 | } | |
1464 | ||
1465 | if (streq(rvalue, "auto")) { | |
1466 | partition->copy_blocks_path = mfree(partition->copy_blocks_path); | |
1467 | partition->copy_blocks_auto = true; | |
585c5c75 | 1468 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1469 | return 0; |
1470 | } | |
1471 | ||
de61a04b | 1472 | r = specifier_printf(rvalue, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
5c08da58 LP |
1473 | if (r < 0) { |
1474 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1475 | "Failed to expand specifiers in CopyBlocks= source path, ignoring: %s", rvalue); | |
1476 | return 0; | |
1477 | } | |
1478 | ||
1479 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1480 | if (r < 0) | |
1481 | return 0; | |
1482 | ||
1483 | free_and_replace(partition->copy_blocks_path, d); | |
1484 | partition->copy_blocks_auto = false; | |
585c5c75 | 1485 | partition->copy_blocks_root = arg_root; |
5c08da58 LP |
1486 | return 0; |
1487 | } | |
1488 | ||
d83d8048 LP |
1489 | static int config_parse_make_dirs( |
1490 | const char *unit, | |
1491 | const char *filename, | |
1492 | unsigned line, | |
1493 | const char *section, | |
1494 | unsigned section_line, | |
1495 | const char *lvalue, | |
1496 | int ltype, | |
1497 | const char *rvalue, | |
1498 | void *data, | |
1499 | void *userdata) { | |
1500 | ||
99534007 DT |
1501 | Partition *partition = ASSERT_PTR(data); |
1502 | const char *p = ASSERT_PTR(rvalue); | |
d83d8048 LP |
1503 | int r; |
1504 | ||
d83d8048 LP |
1505 | for (;;) { |
1506 | _cleanup_free_ char *word = NULL, *d = NULL; | |
1507 | ||
1508 | r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE); | |
1509 | if (r == -ENOMEM) | |
1510 | return log_oom(); | |
1511 | if (r < 0) { | |
1512 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); | |
1513 | return 0; | |
1514 | } | |
1515 | if (r == 0) | |
1516 | return 0; | |
1517 | ||
de61a04b | 1518 | r = specifier_printf(word, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &d); |
d83d8048 LP |
1519 | if (r < 0) { |
1520 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1521 | "Failed to expand specifiers in MakeDirectories= parameter, ignoring: %s", word); | |
1522 | continue; | |
1523 | } | |
1524 | ||
1525 | r = path_simplify_and_warn(d, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue); | |
1526 | if (r < 0) | |
1527 | continue; | |
1528 | ||
1529 | r = strv_consume(&partition->make_directories, TAKE_PTR(d)); | |
1530 | if (r < 0) | |
1531 | return log_oom(); | |
1532 | } | |
1533 | } | |
1534 | ||
889914ef LP |
1535 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_encrypt, encrypt_mode, EncryptMode, ENCRYPT_OFF, "Invalid encryption mode"); |
1536 | ||
e73309c5 LP |
1537 | static int config_parse_gpt_flags( |
1538 | const char *unit, | |
1539 | const char *filename, | |
1540 | unsigned line, | |
1541 | const char *section, | |
1542 | unsigned section_line, | |
1543 | const char *lvalue, | |
1544 | int ltype, | |
1545 | const char *rvalue, | |
1546 | void *data, | |
1547 | void *userdata) { | |
1548 | ||
99534007 | 1549 | uint64_t *gpt_flags = ASSERT_PTR(data); |
e73309c5 LP |
1550 | int r; |
1551 | ||
1552 | assert(rvalue); | |
e73309c5 LP |
1553 | |
1554 | r = safe_atou64(rvalue, gpt_flags); | |
1555 | if (r < 0) { | |
1556 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1557 | "Failed to parse Flags= value, ignoring: %s", rvalue); | |
1558 | return 0; | |
1559 | } | |
1560 | ||
1561 | return 0; | |
1562 | } | |
1563 | ||
11749b61 DDM |
1564 | static int config_parse_uuid( |
1565 | const char *unit, | |
1566 | const char *filename, | |
1567 | unsigned line, | |
1568 | const char *section, | |
1569 | unsigned section_line, | |
1570 | const char *lvalue, | |
1571 | int ltype, | |
1572 | const char *rvalue, | |
1573 | void *data, | |
1574 | void *userdata) { | |
1575 | ||
1576 | Partition *partition = ASSERT_PTR(data); | |
1577 | int r; | |
1578 | ||
1579 | if (isempty(rvalue)) { | |
1580 | partition->new_uuid = SD_ID128_NULL; | |
1581 | partition->new_uuid_is_set = false; | |
1582 | return 0; | |
1583 | } | |
1584 | ||
1585 | if (streq(rvalue, "null")) { | |
1586 | partition->new_uuid = SD_ID128_NULL; | |
1587 | partition->new_uuid_is_set = true; | |
1588 | return 0; | |
1589 | } | |
1590 | ||
1591 | r = sd_id128_from_string(rvalue, &partition->new_uuid); | |
1592 | if (r < 0) { | |
da890466 | 1593 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128-bit ID/UUID, ignoring: %s", rvalue); |
11749b61 DDM |
1594 | return 0; |
1595 | } | |
1596 | ||
1597 | partition->new_uuid_is_set = true; | |
1598 | ||
1599 | return 0; | |
1600 | } | |
1601 | ||
b5b7879a | 1602 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_verity, verity_mode, VerityMode, VERITY_OFF, "Invalid verity mode"); |
5c33b686 | 1603 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_minimize, minimize_mode, MinimizeMode, MINIMIZE_OFF, "Invalid minimize mode"); |
b5b7879a | 1604 | |
39fc0174 | 1605 | static int partition_read_definition(Partition *p, const char *path, const char *const *conf_file_dirs) { |
e594a3b1 LP |
1606 | |
1607 | ConfigTableItem table[] = { | |
600bf76c DDM |
1608 | { "Partition", "Type", config_parse_type, 0, &p->type }, |
1609 | { "Partition", "Label", config_parse_label, 0, &p->new_label }, | |
1610 | { "Partition", "UUID", config_parse_uuid, 0, p }, | |
1611 | { "Partition", "Priority", config_parse_int32, 0, &p->priority }, | |
1612 | { "Partition", "Weight", config_parse_weight, 0, &p->weight }, | |
1613 | { "Partition", "PaddingWeight", config_parse_weight, 0, &p->padding_weight }, | |
1614 | { "Partition", "SizeMinBytes", config_parse_size4096, 1, &p->size_min }, | |
1615 | { "Partition", "SizeMaxBytes", config_parse_size4096, -1, &p->size_max }, | |
1616 | { "Partition", "PaddingMinBytes", config_parse_size4096, 1, &p->padding_min }, | |
1617 | { "Partition", "PaddingMaxBytes", config_parse_size4096, -1, &p->padding_max }, | |
1618 | { "Partition", "FactoryReset", config_parse_bool, 0, &p->factory_reset }, | |
1619 | { "Partition", "CopyBlocks", config_parse_copy_blocks, 0, p }, | |
1620 | { "Partition", "Format", config_parse_fstype, 0, &p->format }, | |
1621 | { "Partition", "CopyFiles", config_parse_copy_files, 0, &p->copy_files }, | |
1622 | { "Partition", "ExcludeFiles", config_parse_exclude_files, 0, &p->exclude_files_source }, | |
1623 | { "Partition", "ExcludeFilesTarget", config_parse_exclude_files, 0, &p->exclude_files_target }, | |
1624 | { "Partition", "MakeDirectories", config_parse_make_dirs, 0, p }, | |
1625 | { "Partition", "Encrypt", config_parse_encrypt, 0, &p->encrypt }, | |
1626 | { "Partition", "Verity", config_parse_verity, 0, &p->verity }, | |
1627 | { "Partition", "VerityMatchKey", config_parse_string, 0, &p->verity_match_key }, | |
1628 | { "Partition", "Flags", config_parse_gpt_flags, 0, &p->gpt_flags }, | |
1629 | { "Partition", "ReadOnly", config_parse_tristate, 0, &p->read_only }, | |
1630 | { "Partition", "NoAuto", config_parse_tristate, 0, &p->no_auto }, | |
1631 | { "Partition", "GrowFileSystem", config_parse_tristate, 0, &p->growfs }, | |
1632 | { "Partition", "SplitName", config_parse_string, 0, &p->split_name_format }, | |
1633 | { "Partition", "Minimize", config_parse_minimize, 0, &p->minimize }, | |
e594a3b1 LP |
1634 | {} |
1635 | }; | |
1636 | int r; | |
39fc0174 RP |
1637 | _cleanup_free_ char *filename = NULL; |
1638 | const char* dropin_dirname; | |
e594a3b1 | 1639 | |
39fc0174 RP |
1640 | r = path_extract_filename(path, &filename); |
1641 | if (r < 0) | |
bef69ae8 | 1642 | return log_error_errno(r, "Failed to extract filename from path '%s': %m", path); |
39fc0174 RP |
1643 | |
1644 | dropin_dirname = strjoina(filename, ".d"); | |
1645 | ||
1646 | r = config_parse_many( | |
1647 | STRV_MAKE_CONST(path), | |
1648 | conf_file_dirs, | |
1649 | dropin_dirname, | |
34f2fd50 | 1650 | arg_definitions ? NULL : arg_root, |
39fc0174 RP |
1651 | "Partition\0", |
1652 | config_item_table_lookup, table, | |
1653 | CONFIG_PARSE_WARN, | |
1654 | p, | |
1655 | NULL, | |
1656 | &p->drop_in_files); | |
e594a3b1 LP |
1657 | if (r < 0) |
1658 | return r; | |
1659 | ||
821d0cf0 | 1660 | if (partition_type_exclude(p->type)) |
7d505753 DDM |
1661 | return 0; |
1662 | ||
e594a3b1 LP |
1663 | if (p->size_min != UINT64_MAX && p->size_max != UINT64_MAX && p->size_min > p->size_max) |
1664 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1665 | "SizeMinBytes= larger than SizeMaxBytes=, refusing."); | |
1666 | ||
1667 | if (p->padding_min != UINT64_MAX && p->padding_max != UINT64_MAX && p->padding_min > p->padding_max) | |
1668 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1669 | "PaddingMinBytes= larger than PaddingMaxBytes=, refusing."); | |
1670 | ||
22e932f4 | 1671 | if (sd_id128_is_null(p->type.uuid)) |
e594a3b1 LP |
1672 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1673 | "Type= not defined, refusing."); | |
1674 | ||
86320e62 DDM |
1675 | if ((p->copy_blocks_path || p->copy_blocks_auto) && |
1676 | (p->format || !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories))) | |
1677 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1678 | "Format=/CopyFiles=/MakeDirectories= and CopyBlocks= cannot be combined, refusing."); | |
1679 | ||
d83d8048 | 1680 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && streq_ptr(p->format, "swap")) |
8a794850 LP |
1681 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1682 | "Format=swap and CopyFiles= cannot be combined, refusing."); | |
1683 | ||
5c08da58 | 1684 | if (!p->format && (!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories) || (p->encrypt != ENCRYPT_OFF && !(p->copy_blocks_path || p->copy_blocks_auto)))) { |
ab45e83f DDM |
1685 | /* Pick "vfat" as file system for esp and xbootldr partitions, otherwise default to "ext4". */ |
1686 | p->format = strdup(IN_SET(p->type.designator, PARTITION_ESP, PARTITION_XBOOTLDR) ? "vfat" : "ext4"); | |
8a794850 LP |
1687 | if (!p->format) |
1688 | return log_oom(); | |
1689 | } | |
1690 | ||
5eef7047 | 1691 | if (p->minimize != MINIMIZE_OFF && !p->format && p->verity != VERITY_HASH) |
c4a87b76 | 1692 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5eef7047 | 1693 | "Minimize= can only be enabled if Format= or Verity=hash are set"); |
c4a87b76 | 1694 | |
5eef7047 | 1695 | if (p->minimize == MINIMIZE_BEST && (p->format && !fstype_is_ro(p->format)) && p->verity != VERITY_HASH) |
5c33b686 | 1696 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
5eef7047 | 1697 | "Minimize=best can only be used with read-only filesystems or Verity=hash"); |
5c33b686 | 1698 | |
6d6cefad DDM |
1699 | if ((!strv_isempty(p->copy_files) || !strv_isempty(p->make_directories)) && !mkfs_supports_root_option(p->format) && geteuid() != 0) |
1700 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EPERM), | |
1701 | "Need to be root to populate %s filesystems with CopyFiles=/MakeDirectories=", | |
1702 | p->format); | |
1703 | ||
0eb23798 DDM |
1704 | if (p->format && fstype_is_ro(p->format) && strv_isempty(p->copy_files) && strv_isempty(p->make_directories)) |
1705 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1706 | "Cannot format %s filesystem without source files, refusing", p->format); | |
1707 | ||
b5b7879a DDM |
1708 | if (p->verity != VERITY_OFF || p->encrypt != ENCRYPT_OFF) { |
1709 | r = dlopen_cryptsetup(); | |
1710 | if (r < 0) | |
1711 | return log_syntax(NULL, LOG_ERR, path, 1, r, | |
1712 | "libcryptsetup not found, Verity=/Encrypt= are not supported: %m"); | |
1713 | } | |
1714 | ||
1715 | if (p->verity != VERITY_OFF && !p->verity_match_key) | |
1716 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1717 | "VerityMatchKey= must be set if Verity=%s", verity_mode_to_string(p->verity)); | |
1718 | ||
1719 | if (p->verity == VERITY_OFF && p->verity_match_key) | |
1720 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1721 | "VerityMatchKey= can only be set if Verity= is not \"%s\"", | |
1722 | verity_mode_to_string(p->verity)); | |
1723 | ||
b456191d DDM |
1724 | if (IN_SET(p->verity, VERITY_HASH, VERITY_SIG) && |
1725 | (p->copy_files || p->copy_blocks_path || p->copy_blocks_auto || p->format || p->make_directories)) | |
b5b7879a DDM |
1726 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), |
1727 | "CopyBlocks=/CopyFiles=/Format=/MakeDirectories= cannot be used with Verity=%s", | |
1728 | verity_mode_to_string(p->verity)); | |
1729 | ||
1730 | if (p->verity != VERITY_OFF && p->encrypt != ENCRYPT_OFF) | |
1731 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1732 | "Encrypting verity hash/data partitions is not supported"); | |
1733 | ||
b456191d DDM |
1734 | if (p->verity == VERITY_SIG && !arg_private_key) |
1735 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1736 | "Verity signature partition requested but no private key provided (--private-key=)"); | |
1737 | ||
1738 | if (p->verity == VERITY_SIG && !arg_certificate) | |
1739 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
ba4a5eff | 1740 | "Verity signature partition requested but no PEM certificate provided (--certificate=)"); |
b456191d DDM |
1741 | |
1742 | if (p->verity == VERITY_SIG && (p->size_min != UINT64_MAX || p->size_max != UINT64_MAX)) | |
1743 | return log_syntax(NULL, LOG_ERR, path, 1, SYNTHETIC_ERRNO(EINVAL), | |
1744 | "SizeMinBytes=/SizeMaxBytes= cannot be used with Verity=%s", | |
1745 | verity_mode_to_string(p->verity)); | |
1746 | ||
e73309c5 | 1747 | /* Verity partitions are read only, let's imply the RO flag hence, unless explicitly configured otherwise. */ |
c1979cd8 | 1748 | if (IN_SET(p->type.designator, PARTITION_ROOT_VERITY, PARTITION_USR_VERITY) && p->read_only < 0) |
e73309c5 LP |
1749 | p->read_only = true; |
1750 | ||
1c41c1dc | 1751 | /* Default to "growfs" on, unless read-only */ |
22e932f4 | 1752 | if (gpt_partition_type_knows_growfs(p->type) && |
1c41c1dc LP |
1753 | p->read_only <= 0) |
1754 | p->growfs = true; | |
1755 | ||
4cee8333 DDM |
1756 | if (!p->split_name_format) { |
1757 | char *s = strdup("%t"); | |
1758 | if (!s) | |
1759 | return log_oom(); | |
1760 | ||
1761 | p->split_name_format = s; | |
1762 | } else if (streq(p->split_name_format, "-")) | |
1763 | p->split_name_format = mfree(p->split_name_format); | |
1764 | ||
7d505753 | 1765 | return 1; |
e594a3b1 LP |
1766 | } |
1767 | ||
b5b7879a DDM |
1768 | static int find_verity_sibling(Context *context, Partition *p, VerityMode mode, Partition **ret) { |
1769 | Partition *s = NULL; | |
1770 | ||
1771 | assert(p); | |
1772 | assert(p->verity != VERITY_OFF); | |
1773 | assert(p->verity_match_key); | |
1774 | assert(mode != VERITY_OFF); | |
1775 | assert(p->verity != mode); | |
1776 | assert(ret); | |
1777 | ||
1778 | /* Try to find the matching sibling partition of the given type for a verity partition. For a data | |
af3d3873 YW |
1779 | * partition, this is the corresponding hash partition with the same verity name (and vice versa for |
1780 | * the hash partition). */ | |
b5b7879a DDM |
1781 | |
1782 | LIST_FOREACH(partitions, q, context->partitions) { | |
1783 | if (p == q) | |
1784 | continue; | |
1785 | ||
1786 | if (q->verity != mode) | |
1787 | continue; | |
1788 | ||
1789 | assert(q->verity_match_key); | |
1790 | ||
1791 | if (!streq(p->verity_match_key, q->verity_match_key)) | |
1792 | continue; | |
1793 | ||
1794 | if (s) | |
1795 | return -ENOTUNIQ; | |
1796 | ||
1797 | s = q; | |
1798 | } | |
1799 | ||
1800 | if (!s) | |
1801 | return -ENXIO; | |
1802 | ||
1803 | *ret = s; | |
1804 | ||
1805 | return 0; | |
1806 | } | |
1807 | ||
1e46985a DDM |
1808 | static int context_open_and_lock_backing_fd(const char *node, int *backing_fd) { |
1809 | _cleanup_close_ int fd = -EBADF; | |
1810 | ||
1811 | assert(node); | |
1812 | assert(backing_fd); | |
1813 | ||
1814 | if (*backing_fd >= 0) | |
1815 | return 0; | |
1816 | ||
1817 | fd = open(node, O_RDONLY|O_CLOEXEC); | |
1818 | if (fd < 0) | |
1819 | return log_error_errno(errno, "Failed to open device '%s': %m", node); | |
1820 | ||
1821 | /* Tell udev not to interfere while we are processing the device */ | |
1822 | if (flock(fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
1823 | return log_error_errno(errno, "Failed to lock device '%s': %m", node); | |
1824 | ||
1825 | log_debug("Device %s opened and locked.", node); | |
1826 | *backing_fd = TAKE_FD(fd); | |
1827 | return 1; | |
1828 | } | |
1829 | ||
1830 | static int determine_current_padding( | |
1831 | struct fdisk_context *c, | |
1832 | struct fdisk_table *t, | |
1833 | struct fdisk_partition *p, | |
1834 | uint64_t secsz, | |
1835 | uint64_t grainsz, | |
1836 | uint64_t *ret) { | |
1837 | ||
1838 | size_t n_partitions; | |
1839 | uint64_t offset, next = UINT64_MAX; | |
1840 | ||
1841 | assert(c); | |
1842 | assert(t); | |
1843 | assert(p); | |
1844 | assert(ret); | |
1845 | ||
1846 | if (!fdisk_partition_has_end(p)) | |
1847 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!"); | |
1848 | ||
1849 | offset = fdisk_partition_get_end(p); | |
1850 | assert(offset < UINT64_MAX); | |
1851 | offset++; /* The end is one sector before the next partition or padding. */ | |
1852 | assert(offset < UINT64_MAX / secsz); | |
1853 | offset *= secsz; | |
1854 | ||
1855 | n_partitions = fdisk_table_get_nents(t); | |
1856 | for (size_t i = 0; i < n_partitions; i++) { | |
1857 | struct fdisk_partition *q; | |
1858 | uint64_t start; | |
1859 | ||
1860 | q = fdisk_table_get_partition(t, i); | |
1861 | if (!q) | |
1862 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1863 | ||
1864 | if (fdisk_partition_is_used(q) <= 0) | |
1865 | continue; | |
1866 | ||
1867 | if (!fdisk_partition_has_start(q)) | |
1868 | continue; | |
1869 | ||
1870 | start = fdisk_partition_get_start(q); | |
1871 | assert(start < UINT64_MAX / secsz); | |
1872 | start *= secsz; | |
1873 | ||
1874 | if (start >= offset && (next == UINT64_MAX || next > start)) | |
1875 | next = start; | |
1876 | } | |
1877 | ||
1878 | if (next == UINT64_MAX) { | |
1879 | /* No later partition? In that case check the end of the usable area */ | |
1880 | next = fdisk_get_last_lba(c); | |
1881 | assert(next < UINT64_MAX); | |
1882 | next++; /* The last LBA is one sector before the end */ | |
1883 | ||
1884 | assert(next < UINT64_MAX / secsz); | |
1885 | next *= secsz; | |
1886 | ||
1887 | if (offset > next) | |
1888 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
1889 | } | |
1890 | ||
1891 | assert(next >= offset); | |
1892 | offset = round_up_size(offset, grainsz); | |
1893 | next = round_down_size(next, grainsz); | |
1894 | ||
1895 | *ret = LESS_BY(next, offset); /* Saturated subtraction, rounding might have fucked things up */ | |
1896 | return 0; | |
1897 | } | |
1898 | ||
1899 | static int context_copy_from(Context *context) { | |
1900 | _cleanup_close_ int fd = -EBADF; | |
1901 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; | |
1902 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
1903 | Partition *last = NULL; | |
1904 | unsigned long secsz, grainsz; | |
1905 | size_t n_partitions; | |
1906 | int r; | |
1907 | ||
1908 | if (!arg_copy_from) | |
1909 | return 0; | |
1910 | ||
1911 | r = context_open_and_lock_backing_fd(arg_copy_from, &fd); | |
1912 | if (r < 0) | |
1913 | return r; | |
1914 | ||
1915 | r = fd_verify_regular(fd); | |
1916 | if (r < 0) | |
1917 | return log_error_errno(r, "%s is not a file: %m", arg_copy_from); | |
1918 | ||
1919 | r = fdisk_new_context_fd(fd, /* read_only = */ true, /* sector_size = */ UINT32_MAX, &c); | |
1920 | if (r < 0) | |
1921 | return log_error_errno(r, "Failed to create fdisk context: %m"); | |
1922 | ||
1923 | secsz = fdisk_get_sector_size(c); | |
1924 | grainsz = fdisk_get_grain_size(c); | |
1925 | ||
1926 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
1927 | if (secsz < 512 || !ISPOWEROF2(secsz)) | |
1928 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
1929 | ||
1930 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
1931 | return log_error_errno(SYNTHETIC_ERRNO(EHWPOISON), "Cannot copy from disk %s with no GPT disk label.", arg_copy_from); | |
1932 | ||
1933 | r = fdisk_get_partitions(c, &t); | |
1934 | if (r < 0) | |
1935 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
1936 | ||
1937 | n_partitions = fdisk_table_get_nents(t); | |
1938 | for (size_t i = 0; i < n_partitions; i++) { | |
1939 | _cleanup_(partition_freep) Partition *np = NULL; | |
1940 | _cleanup_free_ char *label_copy = NULL; | |
1941 | struct fdisk_partition *p; | |
1942 | const char *label; | |
1943 | uint64_t sz, start, padding; | |
1944 | sd_id128_t ptid, id; | |
1945 | GptPartitionType type; | |
1946 | ||
1947 | p = fdisk_table_get_partition(t, i); | |
1948 | if (!p) | |
1949 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
1950 | ||
1951 | if (fdisk_partition_is_used(p) <= 0) | |
1952 | continue; | |
1953 | ||
1954 | if (fdisk_partition_has_start(p) <= 0 || | |
1955 | fdisk_partition_has_size(p) <= 0 || | |
1956 | fdisk_partition_has_partno(p) <= 0) | |
1957 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
1958 | ||
1959 | r = fdisk_partition_get_type_as_id128(p, &ptid); | |
1960 | if (r < 0) | |
1961 | return log_error_errno(r, "Failed to query partition type UUID: %m"); | |
1962 | ||
1963 | type = gpt_partition_type_from_uuid(ptid); | |
1964 | ||
1965 | r = fdisk_partition_get_uuid_as_id128(p, &id); | |
1966 | if (r < 0) | |
1967 | return log_error_errno(r, "Failed to query partition UUID: %m"); | |
1968 | ||
1969 | label = fdisk_partition_get_name(p); | |
1970 | if (!isempty(label)) { | |
1971 | label_copy = strdup(label); | |
1972 | if (!label_copy) | |
1973 | return log_oom(); | |
1974 | } | |
1975 | ||
1976 | sz = fdisk_partition_get_size(p); | |
1977 | assert(sz <= UINT64_MAX/secsz); | |
1978 | sz *= secsz; | |
1979 | ||
1980 | start = fdisk_partition_get_start(p); | |
1981 | assert(start <= UINT64_MAX/secsz); | |
1982 | start *= secsz; | |
1983 | ||
1984 | if (partition_type_exclude(type)) | |
1985 | continue; | |
1986 | ||
1987 | np = partition_new(); | |
1988 | if (!np) | |
1989 | return log_oom(); | |
1990 | ||
1991 | np->type = type; | |
1992 | np->new_uuid = id; | |
1993 | np->new_uuid_is_set = true; | |
1994 | np->size_min = np->size_max = sz; | |
1995 | np->new_label = TAKE_PTR(label_copy); | |
1996 | ||
1997 | np->definition_path = strdup(arg_copy_from); | |
1998 | if (!np->definition_path) | |
1999 | return log_oom(); | |
2000 | ||
2001 | r = determine_current_padding(c, t, p, secsz, grainsz, &padding); | |
2002 | if (r < 0) | |
2003 | return r; | |
2004 | ||
2005 | np->padding_min = np->padding_max = padding; | |
2006 | ||
2007 | np->copy_blocks_path = strdup(arg_copy_from); | |
2008 | if (!np->copy_blocks_path) | |
2009 | return log_oom(); | |
2010 | ||
2011 | np->copy_blocks_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3); | |
2012 | if (np->copy_blocks_fd < 0) | |
2013 | return log_error_errno(r, "Failed to duplicate file descriptor of %s: %m", arg_copy_from); | |
2014 | ||
2015 | np->copy_blocks_offset = start; | |
2016 | np->copy_blocks_size = sz; | |
2017 | ||
2018 | r = fdisk_partition_get_attrs_as_uint64(p, &np->gpt_flags); | |
2019 | if (r < 0) | |
2020 | return log_error_errno(r, "Failed to get partition flags: %m"); | |
2021 | ||
2022 | LIST_INSERT_AFTER(partitions, context->partitions, last, np); | |
2023 | last = TAKE_PTR(np); | |
2024 | context->n_partitions++; | |
2025 | } | |
2026 | ||
2027 | return 0; | |
2028 | } | |
2029 | ||
4b047310 | 2030 | static int context_read_definitions(Context *context) { |
e594a3b1 | 2031 | _cleanup_strv_free_ char **files = NULL; |
1e46985a | 2032 | Partition *last = LIST_FIND_TAIL(partitions, context->partitions); |
39fc0174 | 2033 | const char *const *dirs; |
9b05a371 | 2034 | int r; |
e594a3b1 LP |
2035 | |
2036 | assert(context); | |
2037 | ||
4b047310 | 2038 | dirs = (const char* const*) (arg_definitions ?: CONF_PATHS_STRV("repart.d")); |
39fc0174 | 2039 | |
4b047310 | 2040 | r = conf_files_list_strv(&files, ".conf", arg_definitions ? NULL : arg_root, CONF_FILES_REGULAR|CONF_FILES_FILTER_MASKED, dirs); |
e594a3b1 LP |
2041 | if (r < 0) |
2042 | return log_error_errno(r, "Failed to enumerate *.conf files: %m"); | |
2043 | ||
2044 | STRV_FOREACH(f, files) { | |
2045 | _cleanup_(partition_freep) Partition *p = NULL; | |
2046 | ||
2047 | p = partition_new(); | |
2048 | if (!p) | |
2049 | return log_oom(); | |
2050 | ||
2051 | p->definition_path = strdup(*f); | |
2052 | if (!p->definition_path) | |
2053 | return log_oom(); | |
2054 | ||
39fc0174 | 2055 | r = partition_read_definition(p, *f, dirs); |
e594a3b1 LP |
2056 | if (r < 0) |
2057 | return r; | |
7d505753 DDM |
2058 | if (r == 0) |
2059 | continue; | |
e594a3b1 LP |
2060 | |
2061 | LIST_INSERT_AFTER(partitions, context->partitions, last, p); | |
2062 | last = TAKE_PTR(p); | |
2063 | context->n_partitions++; | |
2064 | } | |
2065 | ||
b5b7879a DDM |
2066 | /* Check that each configured verity hash/data partition has a matching verity data/hash partition. */ |
2067 | ||
2068 | LIST_FOREACH(partitions, p, context->partitions) { | |
2069 | if (p->verity == VERITY_OFF) | |
2070 | continue; | |
2071 | ||
2072 | for (VerityMode mode = VERITY_OFF + 1; mode < _VERITY_MODE_MAX; mode++) { | |
b456191d | 2073 | Partition *q = NULL; |
b5b7879a DDM |
2074 | |
2075 | if (p->verity == mode) | |
2076 | continue; | |
2077 | ||
2078 | if (p->siblings[mode]) | |
2079 | continue; | |
2080 | ||
2081 | r = find_verity_sibling(context, p, mode, &q); | |
8e52ed02 DDM |
2082 | if (r == -ENXIO) { |
2083 | if (mode != VERITY_SIG) | |
2084 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
2085 | "Missing verity %s partition for verity %s partition with VerityMatchKey=%s", | |
2086 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
2087 | } else if (r == -ENOTUNIQ) | |
b5b7879a DDM |
2088 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), |
2089 | "Multiple verity %s partitions found for verity %s partition with VerityMatchKey=%s", | |
2090 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
8e52ed02 DDM |
2091 | else if (r < 0) |
2092 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, r, | |
2093 | "Failed to find verity %s partition for verity %s partition with VerityMatchKey=%s", | |
2094 | verity_mode_to_string(mode), verity_mode_to_string(p->verity), p->verity_match_key); | |
b5b7879a | 2095 | |
b456191d DDM |
2096 | if (q) { |
2097 | if (q->priority != p->priority) | |
2098 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
2099 | "Priority mismatch (%i != %i) for verity sibling partitions with VerityMatchKey=%s", | |
2100 | p->priority, q->priority, p->verity_match_key); | |
b5b7879a | 2101 | |
b456191d DDM |
2102 | p->siblings[mode] = q; |
2103 | } | |
b5b7879a DDM |
2104 | } |
2105 | } | |
2106 | ||
5eef7047 DDM |
2107 | LIST_FOREACH(partitions, p, context->partitions) { |
2108 | Partition *dp; | |
2109 | ||
2110 | if (p->verity != VERITY_HASH) | |
2111 | continue; | |
2112 | ||
2113 | if (p->minimize == MINIMIZE_OFF) | |
2114 | continue; | |
2115 | ||
2116 | assert_se(dp = p->siblings[VERITY_DATA]); | |
2117 | ||
2118 | if (dp->minimize == MINIMIZE_OFF && !(p->copy_blocks_path || p->copy_blocks_auto)) | |
2119 | return log_syntax(NULL, LOG_ERR, p->definition_path, 1, SYNTHETIC_ERRNO(EINVAL), | |
2120 | "Minimize= set for verity hash partition but data partition does " | |
2121 | "not set CopyBlocks= or Minimize="); | |
2122 | ||
2123 | } | |
2124 | ||
e594a3b1 LP |
2125 | return 0; |
2126 | } | |
2127 | ||
e594a3b1 LP |
2128 | static int fdisk_ask_cb(struct fdisk_context *c, struct fdisk_ask *ask, void *data) { |
2129 | _cleanup_free_ char *ids = NULL; | |
2130 | int r; | |
2131 | ||
2132 | if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_STRING) | |
2133 | return -EINVAL; | |
2134 | ||
b7416360 | 2135 | ids = new(char, SD_ID128_UUID_STRING_MAX); |
e594a3b1 LP |
2136 | if (!ids) |
2137 | return -ENOMEM; | |
2138 | ||
b7416360 | 2139 | r = fdisk_ask_string_set_result(ask, sd_id128_to_uuid_string(*(sd_id128_t*) data, ids)); |
e594a3b1 LP |
2140 | if (r < 0) |
2141 | return r; | |
2142 | ||
2143 | TAKE_PTR(ids); | |
2144 | return 0; | |
2145 | } | |
2146 | ||
2147 | static int fdisk_set_disklabel_id_by_uuid(struct fdisk_context *c, sd_id128_t id) { | |
2148 | int r; | |
2149 | ||
2150 | r = fdisk_set_ask(c, fdisk_ask_cb, &id); | |
2151 | if (r < 0) | |
2152 | return r; | |
2153 | ||
2154 | r = fdisk_set_disklabel_id(c); | |
2155 | if (r < 0) | |
2156 | return r; | |
2157 | ||
2158 | return fdisk_set_ask(c, NULL, NULL); | |
2159 | } | |
2160 | ||
53171c04 | 2161 | static int derive_uuid(sd_id128_t base, const char *token, sd_id128_t *ret) { |
e594a3b1 | 2162 | union { |
ade99252 | 2163 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
2164 | sd_id128_t id; |
2165 | } result; | |
2166 | ||
53171c04 | 2167 | assert(token); |
e594a3b1 LP |
2168 | assert(ret); |
2169 | ||
53171c04 LP |
2170 | /* Derive a new UUID from the specified UUID in a stable and reasonably safe way. Specifically, we |
2171 | * calculate the HMAC-SHA256 of the specified token string, keyed by the supplied base (typically the | |
2172 | * machine ID). We use the machine ID as key (and not as cleartext!) of the HMAC operation since it's | |
2173 | * the machine ID we don't want to leak. */ | |
e594a3b1 | 2174 | |
ade99252 | 2175 | hmac_sha256(base.bytes, sizeof(base.bytes), token, strlen(token), result.md); |
e594a3b1 LP |
2176 | |
2177 | /* Take the first half, mark it as v4 UUID */ | |
2178 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
2179 | *ret = id128_make_v4_uuid(result.id); | |
2180 | return 0; | |
2181 | } | |
2182 | ||
cc751c75 | 2183 | static int context_load_partition_table(Context *context) { |
e594a3b1 LP |
2184 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
2185 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *t = NULL; | |
2186 | uint64_t left_boundary = UINT64_MAX, first_lba, last_lba, nsectors; | |
2187 | _cleanup_free_ char *disk_uuid_string = NULL; | |
2188 | bool from_scratch = false; | |
2189 | sd_id128_t disk_uuid; | |
2190 | size_t n_partitions; | |
994b3031 LP |
2191 | unsigned long secsz; |
2192 | uint64_t grainsz; | |
e594a3b1 LP |
2193 | int r; |
2194 | ||
2195 | assert(context); | |
170c9823 LP |
2196 | assert(!context->fdisk_context); |
2197 | assert(!context->free_areas); | |
2198 | assert(context->start == UINT64_MAX); | |
2199 | assert(context->end == UINT64_MAX); | |
2200 | assert(context->total == UINT64_MAX); | |
e594a3b1 | 2201 | |
e1878ef7 DDM |
2202 | c = fdisk_new_context(); |
2203 | if (!c) | |
2204 | return log_oom(); | |
2205 | ||
6c54e1d6 | 2206 | if (arg_sector_size > 0) |
e1878ef7 | 2207 | r = fdisk_save_user_sector_size(c, /* phy= */ 0, arg_sector_size); |
6c54e1d6 LP |
2208 | else { |
2209 | uint32_t ssz; | |
2210 | ||
1e46985a | 2211 | r = context_open_and_lock_backing_fd(context->node, &context->backing_fd); |
37734dc6 YW |
2212 | if (r < 0) |
2213 | return r; | |
6c54e1d6 LP |
2214 | |
2215 | /* Auto-detect sector size if not specified. */ | |
2216 | r = probe_sector_size_prefer_ioctl(context->backing_fd, &ssz); | |
e1878ef7 | 2217 | if (r < 0) |
6c54e1d6 LP |
2218 | return log_error_errno(r, "Failed to probe sector size of '%s': %m", context->node); |
2219 | ||
2220 | r = fdisk_save_user_sector_size(c, /* phy= */ 0, ssz); | |
e1878ef7 | 2221 | } |
6c54e1d6 LP |
2222 | if (r < 0) |
2223 | return log_error_errno(r, "Failed to set sector size: %m"); | |
e1878ef7 | 2224 | |
a26f4a49 LP |
2225 | /* libfdisk doesn't have an API to operate on arbitrary fds, hence reopen the fd going via the |
2226 | * /proc/self/fd/ magic path if we have an existing fd. Open the original file otherwise. */ | |
e1878ef7 DDM |
2227 | r = fdisk_assign_device( |
2228 | c, | |
2229 | context->backing_fd >= 0 ? FORMAT_PROC_FD_PATH(context->backing_fd) : context->node, | |
2230 | arg_dry_run); | |
170c9823 LP |
2231 | if (r == -EINVAL && arg_size_auto) { |
2232 | struct stat st; | |
2233 | ||
2234 | /* libfdisk returns EINVAL if opening a file of size zero. Let's check for that, and accept | |
2235 | * it if automatic sizing is requested. */ | |
2236 | ||
cc751c75 DDM |
2237 | if (context->backing_fd < 0) |
2238 | r = stat(context->node, &st); | |
170c9823 | 2239 | else |
cc751c75 | 2240 | r = fstat(context->backing_fd, &st); |
170c9823 | 2241 | if (r < 0) |
cc751c75 | 2242 | return log_error_errno(errno, "Failed to stat block device '%s': %m", context->node); |
170c9823 | 2243 | |
994b3031 | 2244 | if (S_ISREG(st.st_mode) && st.st_size == 0) { |
264668a8 | 2245 | /* Use the fallback values if we have no better idea */ |
e1878ef7 | 2246 | context->sector_size = arg_sector_size ?: 512; |
994b3031 | 2247 | context->grain_size = 4096; |
170c9823 | 2248 | return /* from_scratch = */ true; |
994b3031 | 2249 | } |
170c9823 LP |
2250 | |
2251 | r = -EINVAL; | |
2252 | } | |
e594a3b1 | 2253 | if (r < 0) |
cc751c75 | 2254 | return log_error_errno(r, "Failed to open device '%s': %m", context->node); |
a26f4a49 | 2255 | |
cc751c75 | 2256 | if (context->backing_fd < 0) { |
a26f4a49 | 2257 | /* If we have no fd referencing the device yet, make a copy of the fd now, so that we have one */ |
1e46985a | 2258 | r = context_open_and_lock_backing_fd(FORMAT_PROC_FD_PATH(fdisk_get_devfd(c)), &context->backing_fd); |
37734dc6 YW |
2259 | if (r < 0) |
2260 | return r; | |
25baae50 | 2261 | } |
e594a3b1 | 2262 | |
994b3031 LP |
2263 | /* The offsets/sizes libfdisk returns to us will be in multiple of the sector size of the |
2264 | * device. This is typically 512, and sometimes 4096. Let's query libfdisk once for it, and then use | |
2265 | * it for all our needs. Note that the values we use ourselves always are in bytes though, thus mean | |
2266 | * the same thing universally. Also note that regardless what kind of sector size is in use we'll | |
2267 | * place partitions at multiples of 4K. */ | |
2268 | secsz = fdisk_get_sector_size(c); | |
2269 | ||
2270 | /* Insist on a power of two, and that it's a multiple of 512, i.e. the traditional sector size. */ | |
983ce0b5 LP |
2271 | if (secsz < 512 || !ISPOWEROF2(secsz)) |
2272 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Sector size %lu is not a power of two larger than 512? Refusing.", secsz); | |
994b3031 LP |
2273 | |
2274 | /* Use at least 4K, and ensure it's a multiple of the sector size, regardless if that is smaller or | |
2275 | * larger */ | |
2276 | grainsz = secsz < 4096 ? 4096 : secsz; | |
2277 | ||
2278 | log_debug("Sector size of device is %lu bytes. Using grain size of %" PRIu64 ".", secsz, grainsz); | |
2279 | ||
e594a3b1 LP |
2280 | switch (arg_empty) { |
2281 | ||
2282 | case EMPTY_REFUSE: | |
2283 | /* Refuse empty disks, insist on an existing GPT partition table */ | |
2284 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2285 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has no GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2286 | |
2287 | break; | |
2288 | ||
2289 | case EMPTY_REQUIRE: | |
2290 | /* Require an empty disk, refuse any existing partition table */ | |
2291 | r = fdisk_has_label(c); | |
2292 | if (r < 0) | |
cc751c75 | 2293 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 | 2294 | if (r > 0) |
cc751c75 | 2295 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s already has a disk label, refusing.", context->node); |
e594a3b1 LP |
2296 | |
2297 | from_scratch = true; | |
2298 | break; | |
2299 | ||
2300 | case EMPTY_ALLOW: | |
2301 | /* Allow both an empty disk and an existing partition table, but only GPT */ | |
2302 | r = fdisk_has_label(c); | |
2303 | if (r < 0) | |
cc751c75 | 2304 | return log_error_errno(r, "Failed to determine whether disk %s has a disk label: %m", context->node); |
e594a3b1 LP |
2305 | if (r > 0) { |
2306 | if (!fdisk_is_labeltype(c, FDISK_DISKLABEL_GPT)) | |
cc751c75 | 2307 | return log_notice_errno(SYNTHETIC_ERRNO(EHWPOISON), "Disk %s has non-GPT disk label, not repartitioning.", context->node); |
e594a3b1 LP |
2308 | } else |
2309 | from_scratch = true; | |
2310 | ||
2311 | break; | |
2312 | ||
2313 | case EMPTY_FORCE: | |
a26f4a49 | 2314 | case EMPTY_CREATE: |
e594a3b1 LP |
2315 | /* Always reinitiaize the disk, don't consider what there was on the disk before */ |
2316 | from_scratch = true; | |
2317 | break; | |
2318 | } | |
2319 | ||
2320 | if (from_scratch) { | |
e594a3b1 LP |
2321 | r = fdisk_create_disklabel(c, "gpt"); |
2322 | if (r < 0) | |
2323 | return log_error_errno(r, "Failed to create GPT disk label: %m"); | |
2324 | ||
53171c04 | 2325 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2326 | if (r < 0) |
2327 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2328 | ||
2329 | r = fdisk_set_disklabel_id_by_uuid(c, disk_uuid); | |
2330 | if (r < 0) | |
2331 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2332 | ||
2333 | goto add_initial_free_area; | |
2334 | } | |
2335 | ||
2336 | r = fdisk_get_disklabel_id(c, &disk_uuid_string); | |
2337 | if (r < 0) | |
2338 | return log_error_errno(r, "Failed to get current GPT disk label UUID: %m"); | |
2339 | ||
2340 | r = sd_id128_from_string(disk_uuid_string, &disk_uuid); | |
2341 | if (r < 0) | |
2342 | return log_error_errno(r, "Failed to parse current GPT disk label UUID: %m"); | |
2343 | ||
2344 | if (sd_id128_is_null(disk_uuid)) { | |
53171c04 | 2345 | r = derive_uuid(context->seed, "disk-uuid", &disk_uuid); |
e594a3b1 LP |
2346 | if (r < 0) |
2347 | return log_error_errno(r, "Failed to acquire disk GPT uuid: %m"); | |
2348 | ||
2349 | r = fdisk_set_disklabel_id(c); | |
2350 | if (r < 0) | |
2351 | return log_error_errno(r, "Failed to set GPT disk label: %m"); | |
2352 | } | |
2353 | ||
2354 | r = fdisk_get_partitions(c, &t); | |
2355 | if (r < 0) | |
2356 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
2357 | ||
2358 | n_partitions = fdisk_table_get_nents(t); | |
695cfd53 | 2359 | for (size_t i = 0; i < n_partitions; i++) { |
e594a3b1 | 2360 | _cleanup_free_ char *label_copy = NULL; |
03677889 | 2361 | Partition *last = NULL; |
e594a3b1 | 2362 | struct fdisk_partition *p; |
63b96eb9 | 2363 | const char *label; |
e594a3b1 LP |
2364 | uint64_t sz, start; |
2365 | bool found = false; | |
2366 | sd_id128_t ptid, id; | |
2367 | size_t partno; | |
2368 | ||
2369 | p = fdisk_table_get_partition(t, i); | |
2370 | if (!p) | |
2371 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to read partition metadata: %m"); | |
2372 | ||
2373 | if (fdisk_partition_is_used(p) <= 0) | |
2374 | continue; | |
2375 | ||
2376 | if (fdisk_partition_has_start(p) <= 0 || | |
2377 | fdisk_partition_has_size(p) <= 0 || | |
2378 | fdisk_partition_has_partno(p) <= 0) | |
2379 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Found a partition without a position, size or number."); | |
2380 | ||
63b96eb9 | 2381 | r = fdisk_partition_get_type_as_id128(p, &ptid); |
e594a3b1 | 2382 | if (r < 0) |
63b96eb9 | 2383 | return log_error_errno(r, "Failed to query partition type UUID: %m"); |
e594a3b1 | 2384 | |
02e32aa6 | 2385 | r = fdisk_partition_get_uuid_as_id128(p, &id); |
e594a3b1 | 2386 | if (r < 0) |
02e32aa6 | 2387 | return log_error_errno(r, "Failed to query partition UUID: %m"); |
e594a3b1 LP |
2388 | |
2389 | label = fdisk_partition_get_name(p); | |
2390 | if (!isempty(label)) { | |
2391 | label_copy = strdup(label); | |
2392 | if (!label_copy) | |
2393 | return log_oom(); | |
2394 | } | |
2395 | ||
2396 | sz = fdisk_partition_get_size(p); | |
ac33e147 | 2397 | assert(sz <= UINT64_MAX/secsz); |
994b3031 | 2398 | sz *= secsz; |
e594a3b1 LP |
2399 | |
2400 | start = fdisk_partition_get_start(p); | |
ac33e147 | 2401 | assert(start <= UINT64_MAX/secsz); |
994b3031 | 2402 | start *= secsz; |
e594a3b1 LP |
2403 | |
2404 | partno = fdisk_partition_get_partno(p); | |
2405 | ||
2406 | if (left_boundary == UINT64_MAX || left_boundary > start) | |
2407 | left_boundary = start; | |
2408 | ||
2409 | /* Assign this existing partition to the first partition of the right type that doesn't have | |
2410 | * an existing one assigned yet. */ | |
2411 | LIST_FOREACH(partitions, pp, context->partitions) { | |
2412 | last = pp; | |
2413 | ||
22e932f4 | 2414 | if (!sd_id128_equal(pp->type.uuid, ptid)) |
e594a3b1 LP |
2415 | continue; |
2416 | ||
2417 | if (!pp->current_partition) { | |
2418 | pp->current_uuid = id; | |
2419 | pp->current_size = sz; | |
2420 | pp->offset = start; | |
2421 | pp->partno = partno; | |
2422 | pp->current_label = TAKE_PTR(label_copy); | |
2423 | ||
2424 | pp->current_partition = p; | |
2425 | fdisk_ref_partition(p); | |
2426 | ||
994b3031 | 2427 | r = determine_current_padding(c, t, p, secsz, grainsz, &pp->current_padding); |
e594a3b1 LP |
2428 | if (r < 0) |
2429 | return r; | |
2430 | ||
2431 | if (pp->current_padding > 0) { | |
2432 | r = context_add_free_area(context, pp->current_padding, pp); | |
2433 | if (r < 0) | |
2434 | return r; | |
2435 | } | |
2436 | ||
2437 | found = true; | |
2438 | break; | |
2439 | } | |
2440 | } | |
2441 | ||
2442 | /* If we have no matching definition, create a new one. */ | |
2443 | if (!found) { | |
2444 | _cleanup_(partition_freep) Partition *np = NULL; | |
2445 | ||
2446 | np = partition_new(); | |
2447 | if (!np) | |
2448 | return log_oom(); | |
2449 | ||
2450 | np->current_uuid = id; | |
22e932f4 | 2451 | np->type = gpt_partition_type_from_uuid(ptid); |
e594a3b1 LP |
2452 | np->current_size = sz; |
2453 | np->offset = start; | |
2454 | np->partno = partno; | |
2455 | np->current_label = TAKE_PTR(label_copy); | |
2456 | ||
2457 | np->current_partition = p; | |
2458 | fdisk_ref_partition(p); | |
2459 | ||
994b3031 | 2460 | r = determine_current_padding(c, t, p, secsz, grainsz, &np->current_padding); |
e594a3b1 LP |
2461 | if (r < 0) |
2462 | return r; | |
2463 | ||
2464 | if (np->current_padding > 0) { | |
2465 | r = context_add_free_area(context, np->current_padding, np); | |
2466 | if (r < 0) | |
2467 | return r; | |
2468 | } | |
2469 | ||
2470 | LIST_INSERT_AFTER(partitions, context->partitions, last, TAKE_PTR(np)); | |
2471 | context->n_partitions++; | |
2472 | } | |
2473 | } | |
2474 | ||
2475 | add_initial_free_area: | |
2476 | nsectors = fdisk_get_nsectors(c); | |
994b3031 LP |
2477 | assert(nsectors <= UINT64_MAX/secsz); |
2478 | nsectors *= secsz; | |
e594a3b1 LP |
2479 | |
2480 | first_lba = fdisk_get_first_lba(c); | |
994b3031 LP |
2481 | assert(first_lba <= UINT64_MAX/secsz); |
2482 | first_lba *= secsz; | |
e594a3b1 LP |
2483 | |
2484 | last_lba = fdisk_get_last_lba(c); | |
2485 | assert(last_lba < UINT64_MAX); | |
2486 | last_lba++; | |
994b3031 LP |
2487 | assert(last_lba <= UINT64_MAX/secsz); |
2488 | last_lba *= secsz; | |
e594a3b1 LP |
2489 | |
2490 | assert(last_lba >= first_lba); | |
2491 | ||
2492 | if (left_boundary == UINT64_MAX) { | |
2493 | /* No partitions at all? Then the whole disk is up for grabs. */ | |
2494 | ||
994b3031 LP |
2495 | first_lba = round_up_size(first_lba, grainsz); |
2496 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2497 | |
2498 | if (last_lba > first_lba) { | |
2499 | r = context_add_free_area(context, last_lba - first_lba, NULL); | |
2500 | if (r < 0) | |
2501 | return r; | |
2502 | } | |
2503 | } else { | |
2504 | /* Add space left of first partition */ | |
2505 | assert(left_boundary >= first_lba); | |
2506 | ||
994b3031 LP |
2507 | first_lba = round_up_size(first_lba, grainsz); |
2508 | left_boundary = round_down_size(left_boundary, grainsz); | |
2509 | last_lba = round_down_size(last_lba, grainsz); | |
e594a3b1 LP |
2510 | |
2511 | if (left_boundary > first_lba) { | |
2512 | r = context_add_free_area(context, left_boundary - first_lba, NULL); | |
2513 | if (r < 0) | |
2514 | return r; | |
2515 | } | |
2516 | } | |
2517 | ||
2518 | context->start = first_lba; | |
2519 | context->end = last_lba; | |
2520 | context->total = nsectors; | |
994b3031 LP |
2521 | context->sector_size = secsz; |
2522 | context->grain_size = grainsz; | |
e594a3b1 LP |
2523 | context->fdisk_context = TAKE_PTR(c); |
2524 | ||
2525 | return from_scratch; | |
2526 | } | |
2527 | ||
2528 | static void context_unload_partition_table(Context *context) { | |
e594a3b1 LP |
2529 | assert(context); |
2530 | ||
80a226b2 | 2531 | LIST_FOREACH(partitions, p, context->partitions) { |
e594a3b1 LP |
2532 | |
2533 | /* Entirely remove partitions that have no configuration */ | |
2534 | if (PARTITION_IS_FOREIGN(p)) { | |
2535 | partition_unlink_and_free(context, p); | |
2536 | continue; | |
2537 | } | |
2538 | ||
2539 | /* Otherwise drop all data we read off the block device and everything we might have | |
2540 | * calculated based on it */ | |
2541 | ||
2542 | p->dropped = false; | |
2543 | p->current_size = UINT64_MAX; | |
2544 | p->new_size = UINT64_MAX; | |
2545 | p->current_padding = UINT64_MAX; | |
2546 | p->new_padding = UINT64_MAX; | |
2547 | p->partno = UINT64_MAX; | |
2548 | p->offset = UINT64_MAX; | |
2549 | ||
2550 | if (p->current_partition) { | |
2551 | fdisk_unref_partition(p->current_partition); | |
2552 | p->current_partition = NULL; | |
2553 | } | |
2554 | ||
2555 | if (p->new_partition) { | |
2556 | fdisk_unref_partition(p->new_partition); | |
2557 | p->new_partition = NULL; | |
2558 | } | |
2559 | ||
2560 | p->padding_area = NULL; | |
2561 | p->allocated_to_area = NULL; | |
2562 | ||
15d43e30 LP |
2563 | p->current_uuid = SD_ID128_NULL; |
2564 | p->current_label = mfree(p->current_label); | |
e594a3b1 LP |
2565 | } |
2566 | ||
2567 | context->start = UINT64_MAX; | |
2568 | context->end = UINT64_MAX; | |
2569 | context->total = UINT64_MAX; | |
2570 | ||
2571 | if (context->fdisk_context) { | |
2572 | fdisk_unref_context(context->fdisk_context); | |
2573 | context->fdisk_context = NULL; | |
2574 | } | |
2575 | ||
2576 | context_free_free_areas(context); | |
2577 | } | |
2578 | ||
2579 | static int format_size_change(uint64_t from, uint64_t to, char **ret) { | |
2b59bf51 | 2580 | char *t; |
e594a3b1 LP |
2581 | |
2582 | if (from != UINT64_MAX) { | |
2583 | if (from == to || to == UINT64_MAX) | |
2b59bf51 | 2584 | t = strdup(FORMAT_BYTES(from)); |
e594a3b1 | 2585 | else |
fc03e80c | 2586 | t = strjoin(FORMAT_BYTES(from), " ", special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 | 2587 | } else if (to != UINT64_MAX) |
fc03e80c | 2588 | t = strjoin(special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), " ", FORMAT_BYTES(to)); |
e594a3b1 LP |
2589 | else { |
2590 | *ret = NULL; | |
2591 | return 0; | |
2592 | } | |
2593 | ||
2b59bf51 | 2594 | if (!t) |
e594a3b1 LP |
2595 | return log_oom(); |
2596 | ||
2b59bf51 | 2597 | *ret = t; |
e594a3b1 LP |
2598 | return 1; |
2599 | } | |
2600 | ||
2601 | static const char *partition_label(const Partition *p) { | |
2602 | assert(p); | |
2603 | ||
2604 | if (p->new_label) | |
2605 | return p->new_label; | |
2606 | ||
2607 | if (p->current_label) | |
2608 | return p->current_label; | |
2609 | ||
22e932f4 | 2610 | return gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
2611 | } |
2612 | ||
cc751c75 | 2613 | static int context_dump_partitions(Context *context) { |
e594a3b1 LP |
2614 | _cleanup_(table_unrefp) Table *t = NULL; |
2615 | uint64_t sum_padding = 0, sum_size = 0; | |
e594a3b1 | 2616 | int r; |
bf030f55 DDM |
2617 | const size_t roothash_col = 13, dropin_files_col = 14, split_path_col = 15; |
2618 | bool has_roothash = false, has_dropin_files = false, has_split_path = false; | |
e594a3b1 | 2619 | |
6a01ea4a | 2620 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && context->n_partitions == 0) { |
a015fbe7 TH |
2621 | log_info("Empty partition table."); |
2622 | return 0; | |
2623 | } | |
2624 | ||
bf030f55 DDM |
2625 | t = table_new("type", |
2626 | "label", | |
2627 | "uuid", | |
2628 | "file", | |
2629 | "node", | |
2630 | "offset", | |
2631 | "old size", | |
2632 | "raw size", | |
2633 | "size", | |
2634 | "old padding", | |
2635 | "raw padding", | |
2636 | "padding", | |
2637 | "activity", | |
2638 | "roothash", | |
2639 | "drop-in files", | |
2640 | "split path"); | |
e594a3b1 LP |
2641 | if (!t) |
2642 | return log_oom(); | |
2643 | ||
a015fbe7 | 2644 | if (!DEBUG_LOGGING) { |
6a01ea4a | 2645 | if (arg_json_format_flags & JSON_FORMAT_OFF) |
a015fbe7 | 2646 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, |
bf030f55 DDM |
2647 | (size_t) 8, (size_t) 11, roothash_col, dropin_files_col, |
2648 | split_path_col); | |
a015fbe7 TH |
2649 | else |
2650 | (void) table_set_display(t, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, | |
b5b7879a | 2651 | (size_t) 5, (size_t) 6, (size_t) 7, (size_t) 9, (size_t) 10, |
bf030f55 DDM |
2652 | (size_t) 12, roothash_col, dropin_files_col, |
2653 | split_path_col); | |
a015fbe7 | 2654 | } |
e594a3b1 | 2655 | |
e594a3b1 | 2656 | (void) table_set_align_percent(t, table_get_cell(t, 0, 5), 100); |
9c07c9ec LP |
2657 | (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100); |
2658 | (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100); | |
2659 | (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100); | |
2660 | (void) table_set_align_percent(t, table_get_cell(t, 0, 9), 100); | |
2661 | (void) table_set_align_percent(t, table_get_cell(t, 0, 10), 100); | |
2662 | (void) table_set_align_percent(t, table_get_cell(t, 0, 11), 100); | |
e594a3b1 LP |
2663 | |
2664 | LIST_FOREACH(partitions, p, context->partitions) { | |
b5b7879a | 2665 | _cleanup_free_ char *size_change = NULL, *padding_change = NULL, *partname = NULL, *rh = NULL; |
b7416360 | 2666 | char uuid_buffer[SD_ID128_UUID_STRING_MAX]; |
a015fbe7 | 2667 | const char *label, *activity = NULL; |
e594a3b1 LP |
2668 | |
2669 | if (p->dropped) | |
2670 | continue; | |
2671 | ||
a015fbe7 TH |
2672 | if (p->current_size == UINT64_MAX) |
2673 | activity = "create"; | |
2674 | else if (p->current_size != p->new_size) | |
2675 | activity = "resize"; | |
2676 | ||
e594a3b1 | 2677 | label = partition_label(p); |
cc751c75 | 2678 | partname = p->partno != UINT64_MAX ? fdisk_partname(context->node, p->partno+1) : NULL; |
e594a3b1 LP |
2679 | |
2680 | r = format_size_change(p->current_size, p->new_size, &size_change); | |
2681 | if (r < 0) | |
2682 | return r; | |
2683 | ||
2684 | r = format_size_change(p->current_padding, p->new_padding, &padding_change); | |
2685 | if (r < 0) | |
2686 | return r; | |
2687 | ||
2688 | if (p->new_size != UINT64_MAX) | |
2689 | sum_size += p->new_size; | |
2690 | if (p->new_padding != UINT64_MAX) | |
2691 | sum_padding += p->new_padding; | |
2692 | ||
2ecc7a5b DDM |
2693 | if (p->verity != VERITY_OFF) { |
2694 | Partition *hp = p->verity == VERITY_HASH ? p : p->siblings[VERITY_HASH]; | |
2695 | ||
2696 | rh = hp->roothash ? hexmem(hp->roothash, hp->roothash_size) : strdup("TBD"); | |
b5b7879a DDM |
2697 | if (!rh) |
2698 | return log_oom(); | |
2699 | } | |
2700 | ||
e594a3b1 LP |
2701 | r = table_add_many( |
2702 | t, | |
22e932f4 | 2703 | TABLE_STRING, gpt_partition_type_uuid_to_string_harder(p->type.uuid, uuid_buffer), |
be9ce018 | 2704 | TABLE_STRING, empty_to_null(label) ?: "-", TABLE_SET_COLOR, empty_to_null(label) ? NULL : ansi_grey(), |
11749b61 | 2705 | TABLE_UUID, p->new_uuid_is_set ? p->new_uuid : p->current_uuid, |
d0242ac9 | 2706 | TABLE_PATH_BASENAME, p->definition_path, TABLE_SET_COLOR, p->definition_path ? NULL : ansi_grey(), |
a015fbe7 | 2707 | TABLE_STRING, partname ?: "-", TABLE_SET_COLOR, partname ? NULL : ansi_highlight(), |
e594a3b1 | 2708 | TABLE_UINT64, p->offset, |
a015fbe7 | 2709 | TABLE_UINT64, p->current_size == UINT64_MAX ? 0 : p->current_size, |
e594a3b1 LP |
2710 | TABLE_UINT64, p->new_size, |
2711 | TABLE_STRING, size_change, TABLE_SET_COLOR, !p->partitions_next && sum_size > 0 ? ansi_underline() : NULL, | |
a015fbe7 | 2712 | TABLE_UINT64, p->current_padding == UINT64_MAX ? 0 : p->current_padding, |
e594a3b1 | 2713 | TABLE_UINT64, p->new_padding, |
a015fbe7 | 2714 | TABLE_STRING, padding_change, TABLE_SET_COLOR, !p->partitions_next && sum_padding > 0 ? ansi_underline() : NULL, |
39fc0174 | 2715 | TABLE_STRING, activity ?: "unchanged", |
b5b7879a | 2716 | TABLE_STRING, rh, |
bf030f55 DDM |
2717 | TABLE_STRV, p->drop_in_files, |
2718 | TABLE_STRING, empty_to_null(p->split_path) ?: "-"); | |
e594a3b1 | 2719 | if (r < 0) |
f987a261 | 2720 | return table_log_add_error(r); |
39fc0174 | 2721 | |
b5b7879a | 2722 | has_roothash = has_roothash || !isempty(rh); |
3ab44dbd | 2723 | has_dropin_files = has_dropin_files || !strv_isempty(p->drop_in_files); |
bf030f55 | 2724 | has_split_path = has_split_path || !isempty(p->split_path); |
e594a3b1 LP |
2725 | } |
2726 | ||
6a01ea4a | 2727 | if ((arg_json_format_flags & JSON_FORMAT_OFF) && (sum_padding > 0 || sum_size > 0)) { |
e594a3b1 LP |
2728 | const char *a, *b; |
2729 | ||
2b59bf51 ZJS |
2730 | a = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_size)); |
2731 | b = strjoina(special_glyph(SPECIAL_GLYPH_SIGMA), " = ", FORMAT_BYTES(sum_padding)); | |
e594a3b1 LP |
2732 | |
2733 | r = table_add_many( | |
2734 | t, | |
2735 | TABLE_EMPTY, | |
2736 | TABLE_EMPTY, | |
2737 | TABLE_EMPTY, | |
2738 | TABLE_EMPTY, | |
2739 | TABLE_EMPTY, | |
2740 | TABLE_EMPTY, | |
2741 | TABLE_EMPTY, | |
a015fbe7 | 2742 | TABLE_EMPTY, |
e594a3b1 LP |
2743 | TABLE_STRING, a, |
2744 | TABLE_EMPTY, | |
a015fbe7 TH |
2745 | TABLE_EMPTY, |
2746 | TABLE_STRING, b, | |
39fc0174 | 2747 | TABLE_EMPTY, |
b5b7879a | 2748 | TABLE_EMPTY, |
bf030f55 | 2749 | TABLE_EMPTY, |
a015fbe7 | 2750 | TABLE_EMPTY); |
e594a3b1 | 2751 | if (r < 0) |
f987a261 | 2752 | return table_log_add_error(r); |
e594a3b1 LP |
2753 | } |
2754 | ||
b5b7879a DDM |
2755 | if (!has_roothash) { |
2756 | r = table_hide_column_from_display(t, roothash_col); | |
2757 | if (r < 0) | |
2758 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2759 | } | |
2760 | ||
3ab44dbd | 2761 | if (!has_dropin_files) { |
39fc0174 RP |
2762 | r = table_hide_column_from_display(t, dropin_files_col); |
2763 | if (r < 0) | |
2764 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2765 | } | |
2766 | ||
bf030f55 DDM |
2767 | if (!has_split_path) { |
2768 | r = table_hide_column_from_display(t, split_path_col); | |
2769 | if (r < 0) | |
2770 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
2771 | } | |
2772 | ||
896e678b | 2773 | return table_print_with_pager(t, arg_json_format_flags, arg_pager_flags, arg_legend); |
e594a3b1 LP |
2774 | } |
2775 | ||
2776 | static void context_bar_char_process_partition( | |
2777 | Context *context, | |
2778 | Partition *bar[], | |
2779 | size_t n, | |
2780 | Partition *p, | |
2781 | size_t *ret_start) { | |
2782 | ||
2783 | uint64_t from, to, total; | |
2784 | size_t x, y; | |
2785 | ||
2786 | assert(context); | |
2787 | assert(bar); | |
2788 | assert(n > 0); | |
2789 | assert(p); | |
2790 | ||
2791 | if (p->dropped) | |
2792 | return; | |
2793 | ||
2794 | assert(p->offset != UINT64_MAX); | |
2795 | assert(p->new_size != UINT64_MAX); | |
2796 | ||
2797 | from = p->offset; | |
2798 | to = from + p->new_size; | |
2799 | ||
d8daed09 TY |
2800 | assert(context->total > 0); |
2801 | total = context->total; | |
e594a3b1 | 2802 | |
d8daed09 TY |
2803 | assert(from <= total); |
2804 | x = from * n / total; | |
e594a3b1 | 2805 | |
d8daed09 TY |
2806 | assert(to <= total); |
2807 | y = to * n / total; | |
e594a3b1 LP |
2808 | |
2809 | assert(x <= y); | |
2810 | assert(y <= n); | |
2811 | ||
2812 | for (size_t i = x; i < y; i++) | |
2813 | bar[i] = p; | |
2814 | ||
2815 | *ret_start = x; | |
2816 | } | |
2817 | ||
2818 | static int partition_hint(const Partition *p, const char *node, char **ret) { | |
2819 | _cleanup_free_ char *buf = NULL; | |
e594a3b1 LP |
2820 | const char *label; |
2821 | sd_id128_t id; | |
2822 | ||
2823 | /* Tries really hard to find a suitable description for this partition */ | |
2824 | ||
7b2ffb59 LP |
2825 | if (p->definition_path) |
2826 | return path_extract_filename(p->definition_path, ret); | |
e594a3b1 LP |
2827 | |
2828 | label = partition_label(p); | |
2829 | if (!isempty(label)) { | |
2830 | buf = strdup(label); | |
2831 | goto done; | |
2832 | } | |
2833 | ||
2834 | if (p->partno != UINT64_MAX) { | |
2835 | buf = fdisk_partname(node, p->partno+1); | |
2836 | goto done; | |
2837 | } | |
2838 | ||
11749b61 | 2839 | if (p->new_uuid_is_set) |
e594a3b1 LP |
2840 | id = p->new_uuid; |
2841 | else if (!sd_id128_is_null(p->current_uuid)) | |
2842 | id = p->current_uuid; | |
2843 | else | |
22e932f4 | 2844 | id = p->type.uuid; |
e594a3b1 | 2845 | |
b7416360 | 2846 | buf = strdup(SD_ID128_TO_UUID_STRING(id)); |
e594a3b1 LP |
2847 | |
2848 | done: | |
2849 | if (!buf) | |
2850 | return -ENOMEM; | |
2851 | ||
2852 | *ret = TAKE_PTR(buf); | |
2853 | return 0; | |
2854 | } | |
2855 | ||
cc751c75 | 2856 | static int context_dump_partition_bar(Context *context) { |
e594a3b1 LP |
2857 | _cleanup_free_ Partition **bar = NULL; |
2858 | _cleanup_free_ size_t *start_array = NULL; | |
03677889 | 2859 | Partition *last = NULL; |
e594a3b1 LP |
2860 | bool z = false; |
2861 | size_t c, j = 0; | |
2862 | ||
f391597c | 2863 | assert_se((c = columns()) >= 2); |
e594a3b1 LP |
2864 | c -= 2; /* We do not use the leftmost and rightmost character cell */ |
2865 | ||
2866 | bar = new0(Partition*, c); | |
2867 | if (!bar) | |
2868 | return log_oom(); | |
2869 | ||
2870 | start_array = new(size_t, context->n_partitions); | |
2871 | if (!start_array) | |
2872 | return log_oom(); | |
2873 | ||
2874 | LIST_FOREACH(partitions, p, context->partitions) | |
2875 | context_bar_char_process_partition(context, bar, c, p, start_array + j++); | |
2876 | ||
2877 | putc(' ', stdout); | |
2878 | ||
2879 | for (size_t i = 0; i < c; i++) { | |
2880 | if (bar[i]) { | |
2881 | if (last != bar[i]) | |
2882 | z = !z; | |
2883 | ||
2884 | fputs(z ? ansi_green() : ansi_yellow(), stdout); | |
2885 | fputs(special_glyph(SPECIAL_GLYPH_DARK_SHADE), stdout); | |
2886 | } else { | |
2887 | fputs(ansi_normal(), stdout); | |
2888 | fputs(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), stdout); | |
2889 | } | |
2890 | ||
2891 | last = bar[i]; | |
2892 | } | |
2893 | ||
2894 | fputs(ansi_normal(), stdout); | |
2895 | putc('\n', stdout); | |
2896 | ||
2897 | for (size_t i = 0; i < context->n_partitions; i++) { | |
2898 | _cleanup_free_ char **line = NULL; | |
2899 | ||
2900 | line = new0(char*, c); | |
2901 | if (!line) | |
2902 | return log_oom(); | |
2903 | ||
2904 | j = 0; | |
2905 | LIST_FOREACH(partitions, p, context->partitions) { | |
2906 | _cleanup_free_ char *d = NULL; | |
2907 | j++; | |
2908 | ||
2909 | if (i < context->n_partitions - j) { | |
2910 | ||
2911 | if (line[start_array[j-1]]) { | |
2912 | const char *e; | |
2913 | ||
2914 | /* Upgrade final corner to the right with a branch to the right */ | |
2915 | e = startswith(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); | |
2916 | if (e) { | |
2917 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), e); | |
2918 | if (!d) | |
2919 | return log_oom(); | |
2920 | } | |
2921 | } | |
2922 | ||
2923 | if (!d) { | |
2924 | d = strdup(special_glyph(SPECIAL_GLYPH_TREE_VERTICAL)); | |
2925 | if (!d) | |
2926 | return log_oom(); | |
2927 | } | |
2928 | ||
2929 | } else if (i == context->n_partitions - j) { | |
2930 | _cleanup_free_ char *hint = NULL; | |
2931 | ||
cc751c75 | 2932 | (void) partition_hint(p, context->node, &hint); |
e594a3b1 LP |
2933 | |
2934 | if (streq_ptr(line[start_array[j-1]], special_glyph(SPECIAL_GLYPH_TREE_VERTICAL))) | |
2935 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_BRANCH), " ", strna(hint)); | |
2936 | else | |
2937 | d = strjoin(special_glyph(SPECIAL_GLYPH_TREE_RIGHT), " ", strna(hint)); | |
2938 | ||
2939 | if (!d) | |
2940 | return log_oom(); | |
2941 | } | |
2942 | ||
2943 | if (d) | |
2944 | free_and_replace(line[start_array[j-1]], d); | |
2945 | } | |
2946 | ||
2947 | putc(' ', stdout); | |
2948 | ||
2949 | j = 0; | |
2950 | while (j < c) { | |
2951 | if (line[j]) { | |
2952 | fputs(line[j], stdout); | |
2953 | j += utf8_console_width(line[j]); | |
2954 | } else { | |
2955 | putc(' ', stdout); | |
2956 | j++; | |
2957 | } | |
2958 | } | |
2959 | ||
2960 | putc('\n', stdout); | |
2961 | ||
2962 | for (j = 0; j < c; j++) | |
2963 | free(line[j]); | |
2964 | } | |
2965 | ||
2966 | return 0; | |
2967 | } | |
2968 | ||
b5b7879a DDM |
2969 | static bool context_has_roothash(Context *context) { |
2970 | LIST_FOREACH(partitions, p, context->partitions) | |
2971 | if (p->roothash) | |
2972 | return true; | |
2973 | ||
2974 | return false; | |
2975 | } | |
2976 | ||
cc751c75 | 2977 | static int context_dump(Context *context, bool late) { |
a26d463d DDM |
2978 | int r; |
2979 | ||
2980 | assert(context); | |
a26d463d DDM |
2981 | |
2982 | if (arg_pretty == 0 && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2983 | return 0; | |
2984 | ||
b5b7879a DDM |
2985 | /* If we're outputting JSON, only dump after doing all operations so we can include the roothashes |
2986 | * in the output. */ | |
2987 | if (!late && !FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) | |
2988 | return 0; | |
2989 | ||
2990 | /* If we're not outputting JSON, only dump again after doing all operations if there are any | |
2991 | * roothashes that we need to communicate to the user. */ | |
2992 | if (late && FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !context_has_roothash(context)) | |
2993 | return 0; | |
2994 | ||
cc751c75 | 2995 | r = context_dump_partitions(context); |
a26d463d DDM |
2996 | if (r < 0) |
2997 | return r; | |
2998 | ||
b5b7879a DDM |
2999 | /* Make sure we only write the partition bar once, even if we're writing the partition table twice to |
3000 | * communicate roothashes. */ | |
3001 | if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && !late) { | |
a26d463d DDM |
3002 | putc('\n', stdout); |
3003 | ||
cc751c75 | 3004 | r = context_dump_partition_bar(context); |
a26d463d DDM |
3005 | if (r < 0) |
3006 | return r; | |
3007 | ||
3008 | putc('\n', stdout); | |
3009 | } | |
3010 | ||
3011 | fflush(stdout); | |
3012 | ||
3013 | return 0; | |
3014 | } | |
3015 | ||
3016 | ||
e594a3b1 | 3017 | static bool context_changed(const Context *context) { |
03677889 | 3018 | assert(context); |
e594a3b1 LP |
3019 | |
3020 | LIST_FOREACH(partitions, p, context->partitions) { | |
3021 | if (p->dropped) | |
3022 | continue; | |
3023 | ||
3024 | if (p->allocated_to_area) | |
3025 | return true; | |
3026 | ||
3027 | if (p->new_size != p->current_size) | |
3028 | return true; | |
3029 | } | |
3030 | ||
3031 | return false; | |
3032 | } | |
3033 | ||
81873a6b | 3034 | static int context_wipe_range(Context *context, uint64_t offset, uint64_t size) { |
e594a3b1 LP |
3035 | _cleanup_(blkid_free_probep) blkid_probe probe = NULL; |
3036 | int r; | |
3037 | ||
3038 | assert(context); | |
81873a6b LP |
3039 | assert(offset != UINT64_MAX); |
3040 | assert(size != UINT64_MAX); | |
e594a3b1 LP |
3041 | |
3042 | probe = blkid_new_probe(); | |
3043 | if (!probe) | |
3044 | return log_oom(); | |
3045 | ||
e594a3b1 | 3046 | errno = 0; |
81873a6b | 3047 | r = blkid_probe_set_device(probe, fdisk_get_devfd(context->fdisk_context), offset, size); |
e594a3b1 | 3048 | if (r < 0) |
81873a6b | 3049 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to allocate device probe for wiping."); |
e594a3b1 LP |
3050 | |
3051 | errno = 0; | |
3052 | if (blkid_probe_enable_superblocks(probe, true) < 0 || | |
3053 | blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_MAGIC|BLKID_SUBLKS_BADCSUM) < 0 || | |
3054 | blkid_probe_enable_partitions(probe, true) < 0 || | |
3055 | blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC) < 0) | |
81873a6b | 3056 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to enable superblock and partition probing."); |
e594a3b1 LP |
3057 | |
3058 | for (;;) { | |
3059 | errno = 0; | |
3060 | r = blkid_do_probe(probe); | |
3061 | if (r < 0) | |
3062 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to probe for file systems."); | |
3063 | if (r > 0) | |
3064 | break; | |
3065 | ||
3066 | errno = 0; | |
3067 | if (blkid_do_wipe(probe, false) < 0) | |
3068 | return log_error_errno(errno ?: SYNTHETIC_ERRNO(EIO), "Failed to wipe file system signature."); | |
3069 | } | |
3070 | ||
e594a3b1 LP |
3071 | return 0; |
3072 | } | |
3073 | ||
81873a6b LP |
3074 | static int context_wipe_partition(Context *context, Partition *p) { |
3075 | int r; | |
3076 | ||
3077 | assert(context); | |
3078 | assert(p); | |
3079 | assert(!PARTITION_EXISTS(p)); /* Safety check: never wipe existing partitions */ | |
3080 | ||
3081 | assert(p->offset != UINT64_MAX); | |
3082 | assert(p->new_size != UINT64_MAX); | |
3083 | ||
3084 | r = context_wipe_range(context, p->offset, p->new_size); | |
3085 | if (r < 0) | |
3086 | return r; | |
3087 | ||
3088 | log_info("Successfully wiped file system signatures from future partition %" PRIu64 ".", p->partno); | |
3089 | return 0; | |
3090 | } | |
3091 | ||
3092 | static int context_discard_range( | |
3093 | Context *context, | |
3094 | uint64_t offset, | |
3095 | uint64_t size) { | |
3096 | ||
e594a3b1 LP |
3097 | struct stat st; |
3098 | int fd; | |
3099 | ||
3100 | assert(context); | |
3101 | assert(offset != UINT64_MAX); | |
3102 | assert(size != UINT64_MAX); | |
3103 | ||
3104 | if (size <= 0) | |
3105 | return 0; | |
3106 | ||
a26f4a49 | 3107 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); |
e594a3b1 LP |
3108 | |
3109 | if (fstat(fd, &st) < 0) | |
3110 | return -errno; | |
3111 | ||
3112 | if (S_ISREG(st.st_mode)) { | |
3113 | if (fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, size) < 0) { | |
3114 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
3115 | return -EOPNOTSUPP; | |
3116 | ||
3117 | return -errno; | |
3118 | } | |
3119 | ||
3120 | return 1; | |
3121 | } | |
3122 | ||
3123 | if (S_ISBLK(st.st_mode)) { | |
3124 | uint64_t range[2], end; | |
3125 | ||
994b3031 | 3126 | range[0] = round_up_size(offset, context->sector_size); |
e594a3b1 | 3127 | |
55d38014 LP |
3128 | if (offset > UINT64_MAX - size) |
3129 | return -ERANGE; | |
3130 | ||
e594a3b1 LP |
3131 | end = offset + size; |
3132 | if (end <= range[0]) | |
3133 | return 0; | |
3134 | ||
994b3031 | 3135 | range[1] = round_down_size(end - range[0], context->sector_size); |
e594a3b1 LP |
3136 | if (range[1] <= 0) |
3137 | return 0; | |
3138 | ||
3139 | if (ioctl(fd, BLKDISCARD, range) < 0) { | |
3140 | if (ERRNO_IS_NOT_SUPPORTED(errno)) | |
3141 | return -EOPNOTSUPP; | |
3142 | ||
3143 | return -errno; | |
3144 | } | |
3145 | ||
3146 | return 1; | |
3147 | } | |
3148 | ||
3149 | return -EOPNOTSUPP; | |
3150 | } | |
3151 | ||
3152 | static int context_discard_partition(Context *context, Partition *p) { | |
3153 | int r; | |
3154 | ||
3155 | assert(context); | |
3156 | assert(p); | |
3157 | ||
3158 | assert(p->offset != UINT64_MAX); | |
3159 | assert(p->new_size != UINT64_MAX); | |
3160 | assert(!PARTITION_EXISTS(p)); /* Safety check: never discard existing partitions */ | |
3161 | ||
3162 | if (!arg_discard) | |
3163 | return 0; | |
3164 | ||
3165 | r = context_discard_range(context, p->offset, p->new_size); | |
3166 | if (r == -EOPNOTSUPP) { | |
5b5109e2 | 3167 | log_info("Storage does not support discard, not discarding data in future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
3168 | return 0; |
3169 | } | |
22163eb5 LP |
3170 | if (r == -EBUSY) { |
3171 | /* Let's handle this gracefully: https://bugzilla.kernel.org/show_bug.cgi?id=211167 */ | |
3172 | log_info("Block device is busy, not discarding partition %" PRIu64 " because it probably is mounted.", p->partno); | |
3173 | return 0; | |
3174 | } | |
e594a3b1 LP |
3175 | if (r == 0) { |
3176 | log_info("Partition %" PRIu64 " too short for discard, skipping.", p->partno); | |
3177 | return 0; | |
3178 | } | |
3179 | if (r < 0) | |
5b5109e2 | 3180 | return log_error_errno(r, "Failed to discard data for future partition %" PRIu64 ".", p->partno); |
e594a3b1 | 3181 | |
5b5109e2 | 3182 | log_info("Successfully discarded data from future partition %" PRIu64 ".", p->partno); |
e594a3b1 LP |
3183 | return 1; |
3184 | } | |
3185 | ||
3186 | static int context_discard_gap_after(Context *context, Partition *p) { | |
3187 | uint64_t gap, next = UINT64_MAX; | |
e594a3b1 LP |
3188 | int r; |
3189 | ||
3190 | assert(context); | |
3191 | assert(!p || (p->offset != UINT64_MAX && p->new_size != UINT64_MAX)); | |
3192 | ||
5113436b AF |
3193 | if (!arg_discard) |
3194 | return 0; | |
3195 | ||
e594a3b1 LP |
3196 | if (p) |
3197 | gap = p->offset + p->new_size; | |
3198 | else | |
771805eb SS |
3199 | /* The context start gets rounded up to grain_size, however |
3200 | * existing partitions may be before that so ensure the gap | |
3201 | * starts at the first actually usable lba | |
3202 | */ | |
3203 | gap = fdisk_get_first_lba(context->fdisk_context) * context->sector_size; | |
e594a3b1 LP |
3204 | |
3205 | LIST_FOREACH(partitions, q, context->partitions) { | |
3206 | if (q->dropped) | |
3207 | continue; | |
3208 | ||
3209 | assert(q->offset != UINT64_MAX); | |
3210 | assert(q->new_size != UINT64_MAX); | |
3211 | ||
3212 | if (q->offset < gap) | |
3213 | continue; | |
3214 | ||
3215 | if (next == UINT64_MAX || q->offset < next) | |
3216 | next = q->offset; | |
3217 | } | |
3218 | ||
3219 | if (next == UINT64_MAX) { | |
771805eb | 3220 | next = (fdisk_get_last_lba(context->fdisk_context) + 1) * context->sector_size; |
e594a3b1 LP |
3221 | if (gap > next) |
3222 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition end beyond disk end."); | |
3223 | } | |
3224 | ||
3225 | assert(next >= gap); | |
3226 | r = context_discard_range(context, gap, next - gap); | |
3227 | if (r == -EOPNOTSUPP) { | |
3228 | if (p) | |
5b5109e2 | 3229 | log_info("Storage does not support discard, not discarding gap after partition %" PRIu64 ".", p->partno); |
e594a3b1 | 3230 | else |
5b5109e2 | 3231 | log_info("Storage does not support discard, not discarding gap at beginning of disk."); |
e594a3b1 LP |
3232 | return 0; |
3233 | } | |
3234 | if (r == 0) /* Too short */ | |
3235 | return 0; | |
3236 | if (r < 0) { | |
3237 | if (p) | |
3238 | return log_error_errno(r, "Failed to discard gap after partition %" PRIu64 ".", p->partno); | |
3239 | else | |
3240 | return log_error_errno(r, "Failed to discard gap at beginning of disk."); | |
3241 | } | |
3242 | ||
3243 | if (p) | |
3244 | log_info("Successfully discarded gap after partition %" PRIu64 ".", p->partno); | |
3245 | else | |
3246 | log_info("Successfully discarded gap at beginning of disk."); | |
3247 | ||
3248 | return 0; | |
3249 | } | |
3250 | ||
cc751c75 | 3251 | static int context_wipe_and_discard(Context *context) { |
e594a3b1 LP |
3252 | int r; |
3253 | ||
3254 | assert(context); | |
3255 | ||
3256 | /* Wipe and discard the contents of all partitions we are about to create. We skip the discarding if | |
3257 | * we were supposed to start from scratch anyway, as in that case we just discard the whole block | |
3258 | * device in one go early on. */ | |
3259 | ||
3260 | LIST_FOREACH(partitions, p, context->partitions) { | |
3261 | ||
3262 | if (!p->allocated_to_area) | |
3263 | continue; | |
3264 | ||
821d0cf0 | 3265 | if (partition_type_defer(p->type)) |
81d1098b DDM |
3266 | continue; |
3267 | ||
e594a3b1 LP |
3268 | r = context_wipe_partition(context, p); |
3269 | if (r < 0) | |
3270 | return r; | |
3271 | ||
cc751c75 | 3272 | if (!context->from_scratch) { |
f0cb1b95 LP |
3273 | r = context_discard_partition(context, p); |
3274 | if (r < 0) | |
3275 | return r; | |
3276 | ||
e594a3b1 LP |
3277 | r = context_discard_gap_after(context, p); |
3278 | if (r < 0) | |
3279 | return r; | |
3280 | } | |
3281 | } | |
3282 | ||
cc751c75 | 3283 | if (!context->from_scratch) { |
e594a3b1 LP |
3284 | r = context_discard_gap_after(context, NULL); |
3285 | if (r < 0) | |
3286 | return r; | |
3287 | } | |
3288 | ||
3289 | return 0; | |
3290 | } | |
3291 | ||
a09ae915 DDM |
3292 | typedef struct DecryptedPartitionTarget { |
3293 | int fd; | |
fd9b68d9 | 3294 | char *dm_name; |
a09ae915 DDM |
3295 | char *volume; |
3296 | struct crypt_device *device; | |
3297 | } DecryptedPartitionTarget; | |
3298 | ||
3299 | static DecryptedPartitionTarget* decrypted_partition_target_free(DecryptedPartitionTarget *t) { | |
465261bf | 3300 | #if HAVE_LIBCRYPTSETUP |
a09ae915 DDM |
3301 | int r; |
3302 | ||
3303 | if (!t) | |
3304 | return NULL; | |
3305 | ||
a09ae915 DDM |
3306 | safe_close(t->fd); |
3307 | ||
fd9b68d9 DDM |
3308 | /* udev or so might access out block device in the background while we are done. Let's hence |
3309 | * force detach the volume. We sync'ed before, hence this should be safe. */ | |
3310 | r = sym_crypt_deactivate_by_name(t->device, t->dm_name, CRYPT_DEACTIVATE_FORCE); | |
3311 | if (r < 0) | |
3312 | log_warning_errno(r, "Failed to deactivate LUKS device, ignoring: %m"); | |
a09ae915 DDM |
3313 | |
3314 | sym_crypt_free(t->device); | |
fd9b68d9 | 3315 | free(t->dm_name); |
a09ae915 DDM |
3316 | free(t->volume); |
3317 | free(t); | |
3318 | #endif | |
3319 | return NULL; | |
3320 | } | |
3321 | ||
a64769d6 DDM |
3322 | typedef struct { |
3323 | LoopDevice *loop; | |
3324 | int fd; | |
3325 | char *path; | |
3326 | int whole_fd; | |
a09ae915 | 3327 | DecryptedPartitionTarget *decrypted; |
a64769d6 DDM |
3328 | } PartitionTarget; |
3329 | ||
3330 | static int partition_target_fd(PartitionTarget *t) { | |
3331 | assert(t); | |
3332 | assert(t->loop || t->fd >= 0 || t->whole_fd >= 0); | |
a09ae915 DDM |
3333 | |
3334 | if (t->decrypted) | |
3335 | return t->decrypted->fd; | |
3336 | ||
3337 | if (t->loop) | |
3338 | return t->loop->fd; | |
3339 | ||
3340 | if (t->fd >= 0) | |
3341 | return t->fd; | |
3342 | ||
3343 | return t->whole_fd; | |
a64769d6 DDM |
3344 | } |
3345 | ||
3346 | static const char* partition_target_path(PartitionTarget *t) { | |
3347 | assert(t); | |
3348 | assert(t->loop || t->path); | |
a09ae915 DDM |
3349 | |
3350 | if (t->decrypted) | |
3351 | return t->decrypted->volume; | |
3352 | ||
3353 | if (t->loop) | |
3354 | return t->loop->node; | |
3355 | ||
3356 | return t->path; | |
a64769d6 DDM |
3357 | } |
3358 | ||
3359 | static PartitionTarget *partition_target_free(PartitionTarget *t) { | |
3360 | if (!t) | |
3361 | return NULL; | |
3362 | ||
a09ae915 | 3363 | decrypted_partition_target_free(t->decrypted); |
a64769d6 DDM |
3364 | loop_device_unref(t->loop); |
3365 | safe_close(t->fd); | |
3366 | unlink_and_free(t->path); | |
3367 | ||
3368 | return mfree(t); | |
3369 | } | |
3370 | ||
3371 | DEFINE_TRIVIAL_CLEANUP_FUNC(PartitionTarget*, partition_target_free); | |
3372 | ||
d3201eb4 DDM |
3373 | static int prepare_temporary_file(PartitionTarget *t, uint64_t size) { |
3374 | _cleanup_(unlink_and_freep) char *temp = NULL; | |
254d1313 | 3375 | _cleanup_close_ int fd = -EBADF; |
d3201eb4 DDM |
3376 | const char *vt; |
3377 | int r; | |
3378 | ||
3379 | assert(t); | |
3380 | ||
3381 | r = var_tmp_dir(&vt); | |
3382 | if (r < 0) | |
3383 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
3384 | ||
3385 | temp = path_join(vt, "repart-XXXXXX"); | |
3386 | if (!temp) | |
3387 | return log_oom(); | |
3388 | ||
3389 | fd = mkostemp_safe(temp); | |
3390 | if (fd < 0) | |
3391 | return log_error_errno(fd, "Failed to create temporary file: %m"); | |
3392 | ||
3393 | if (ftruncate(fd, size) < 0) | |
3394 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
3395 | FORMAT_BYTES(size)); | |
3396 | ||
3397 | t->fd = TAKE_FD(fd); | |
3398 | t->path = TAKE_PTR(temp); | |
3399 | ||
3400 | return 0; | |
3401 | } | |
3402 | ||
a64769d6 DDM |
3403 | static int partition_target_prepare( |
3404 | Context *context, | |
3405 | Partition *p, | |
3406 | uint64_t size, | |
3407 | bool need_path, | |
3408 | PartitionTarget **ret) { | |
3409 | ||
3410 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; | |
d3201eb4 DDM |
3411 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
3412 | int whole_fd, r; | |
a64769d6 DDM |
3413 | |
3414 | assert(context); | |
3415 | assert(p); | |
3416 | assert(ret); | |
3417 | ||
3418 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3419 | ||
6b1ea55e | 3420 | t = new(PartitionTarget, 1); |
a64769d6 DDM |
3421 | if (!t) |
3422 | return log_oom(); | |
6b1ea55e | 3423 | *t = (PartitionTarget) { |
254d1313 ZJS |
3424 | .fd = -EBADF, |
3425 | .whole_fd = -EBADF, | |
6b1ea55e | 3426 | }; |
a64769d6 | 3427 | |
d3201eb4 DDM |
3428 | if (!need_path) { |
3429 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
3430 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
a64769d6 | 3431 | |
d3201eb4 DDM |
3432 | t->whole_fd = whole_fd; |
3433 | *ret = TAKE_PTR(t); | |
3434 | return 0; | |
3435 | } | |
a64769d6 | 3436 | |
d3201eb4 DDM |
3437 | /* Loopback block devices are not only useful to turn regular files into block devices, but |
3438 | * also to cut out sections of block devices into new block devices. */ | |
a64769d6 | 3439 | |
fc10b158 | 3440 | if (arg_offline <= 0) { |
66a8c74c | 3441 | r = loop_device_make(whole_fd, O_RDWR, p->offset, size, context->sector_size, 0, LOCK_EX, &d); |
fc10b158 DDM |
3442 | if (r < 0 && (arg_offline == 0 || (r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)))) |
3443 | return log_error_errno(r, "Failed to make loopback device of future partition %" PRIu64 ": %m", p->partno); | |
3444 | if (r >= 0) { | |
3445 | t->loop = TAKE_PTR(d); | |
3446 | *ret = TAKE_PTR(t); | |
3447 | return 0; | |
3448 | } | |
3449 | ||
3450 | log_debug_errno(r, "No access to loop devices, falling back to a regular file"); | |
d3201eb4 | 3451 | } |
a64769d6 | 3452 | |
d3201eb4 DDM |
3453 | /* If we can't allocate a loop device, let's write to a regular file that we copy into the final |
3454 | * image so we can run in containers and without needing root privileges. On filesystems with | |
3455 | * reflinking support, we can take advantage of this and just reflink the result into the image. | |
3456 | */ | |
a64769d6 | 3457 | |
d3201eb4 DDM |
3458 | r = prepare_temporary_file(t, size); |
3459 | if (r < 0) | |
3460 | return r; | |
a64769d6 DDM |
3461 | |
3462 | *ret = TAKE_PTR(t); | |
3463 | ||
3464 | return 0; | |
3465 | } | |
3466 | ||
3467 | static int partition_target_grow(PartitionTarget *t, uint64_t size) { | |
3468 | int r; | |
3469 | ||
3470 | assert(t); | |
a09ae915 | 3471 | assert(!t->decrypted); |
a64769d6 DDM |
3472 | |
3473 | if (t->loop) { | |
3474 | r = loop_device_refresh_size(t->loop, UINT64_MAX, size); | |
3475 | if (r < 0) | |
3476 | return log_error_errno(r, "Failed to refresh loopback device size: %m"); | |
3477 | } else if (t->fd >= 0) { | |
3478 | if (ftruncate(t->fd, size) < 0) | |
3479 | return log_error_errno(errno, "Failed to grow '%s' to %s by truncation: %m", | |
3480 | t->path, FORMAT_BYTES(size)); | |
3481 | } | |
3482 | ||
3483 | return 0; | |
3484 | } | |
3485 | ||
3486 | static int partition_target_sync(Context *context, Partition *p, PartitionTarget *t) { | |
3487 | int whole_fd, r; | |
3488 | ||
3489 | assert(context); | |
3490 | assert(p); | |
3491 | assert(t); | |
3492 | ||
3493 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3494 | ||
a09ae915 DDM |
3495 | if (t->decrypted && fsync(t->decrypted->fd) < 0) |
3496 | return log_error_errno(errno, "Failed to sync changes to '%s': %m", t->decrypted->volume); | |
3497 | ||
a64769d6 DDM |
3498 | if (t->loop) { |
3499 | r = loop_device_sync(t->loop); | |
3500 | if (r < 0) | |
3501 | return log_error_errno(r, "Failed to sync loopback device: %m"); | |
3502 | } else if (t->fd >= 0) { | |
e21be797 DDM |
3503 | struct stat st; |
3504 | ||
a64769d6 DDM |
3505 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) |
3506 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
3507 | ||
6eccec00 DDM |
3508 | if (lseek(t->fd, 0, SEEK_SET) == (off_t) -1) |
3509 | return log_error_errno(errno, "Failed to seek to start of temporary file: %m"); | |
3510 | ||
e21be797 DDM |
3511 | if (fstat(t->fd, &st) < 0) |
3512 | return log_error_errno(errno, "Failed to stat temporary file: %m"); | |
3513 | ||
3514 | if (st.st_size > (off_t) p->new_size) | |
3515 | return log_error_errno(SYNTHETIC_ERRNO(ENOSPC), | |
3516 | "Partition %" PRIu64 "'s contents (%s) don't fit in the partition (%s)", | |
3517 | p->partno, FORMAT_BYTES(st.st_size), FORMAT_BYTES(p->new_size)); | |
3518 | ||
a64769d6 DDM |
3519 | r = copy_bytes(t->fd, whole_fd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_FSYNC); |
3520 | if (r < 0) | |
3521 | return log_error_errno(r, "Failed to copy bytes to partition: %m"); | |
3522 | } else { | |
3523 | if (fsync(t->whole_fd) < 0) | |
3524 | return log_error_errno(errno, "Failed to sync changes: %m"); | |
3525 | } | |
3526 | ||
3527 | return 0; | |
3528 | } | |
3529 | ||
a09ae915 | 3530 | static int partition_encrypt(Context *context, Partition *p, PartitionTarget *target, bool offline) { |
48a09a8f | 3531 | #if HAVE_LIBCRYPTSETUP && HAVE_CRYPT_SET_DATA_OFFSET && HAVE_CRYPT_REENCRYPT_INIT_BY_PASSPHRASE && HAVE_CRYPT_REENCRYPT |
a09ae915 | 3532 | const char *node = partition_target_path(target); |
48a09a8f | 3533 | struct crypt_params_luks2 luks_params = { |
922576e4 DDM |
3534 | .label = strempty(ASSERT_PTR(p)->new_label), |
3535 | .sector_size = ASSERT_PTR(context)->sector_size, | |
a09ae915 | 3536 | .data_device = offline ? node : NULL, |
48a09a8f DDM |
3537 | }; |
3538 | struct crypt_params_reencrypt reencrypt_params = { | |
3539 | .mode = CRYPT_REENCRYPT_ENCRYPT, | |
3540 | .direction = CRYPT_REENCRYPT_BACKWARD, | |
3541 | .resilience = "datashift", | |
3542 | .data_shift = LUKS2_METADATA_SIZE / 512, | |
3543 | .luks2 = &luks_params, | |
3544 | .flags = CRYPT_REENCRYPT_INITIALIZE_ONLY|CRYPT_REENCRYPT_MOVE_FIRST_SEGMENT, | |
3545 | }; | |
0d12936d | 3546 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
48a09a8f DDM |
3547 | _cleanup_(erase_and_freep) char *base64_encoded = NULL; |
3548 | _cleanup_fclose_ FILE *h = NULL; | |
a09ae915 | 3549 | _cleanup_free_ char *hp = NULL, *vol = NULL, *dm_name = NULL; |
48a09a8f DDM |
3550 | const char *passphrase = NULL; |
3551 | size_t passphrase_size = 0; | |
0b75744d | 3552 | const char *vt; |
b9df3536 LP |
3553 | int r; |
3554 | ||
994b3031 | 3555 | assert(context); |
b9df3536 | 3556 | assert(p); |
889914ef LP |
3557 | assert(p->encrypt != ENCRYPT_OFF); |
3558 | ||
0d12936d LP |
3559 | r = dlopen_cryptsetup(); |
3560 | if (r < 0) | |
3561 | return log_error_errno(r, "libcryptsetup not found, cannot encrypt: %m"); | |
3562 | ||
b9df3536 LP |
3563 | log_info("Encrypting future partition %" PRIu64 "...", p->partno); |
3564 | ||
a09ae915 DDM |
3565 | if (offline) { |
3566 | r = var_tmp_dir(&vt); | |
3567 | if (r < 0) | |
3568 | return log_error_errno(r, "Failed to determine temporary files directory: %m"); | |
0b75744d | 3569 | |
a09ae915 DDM |
3570 | r = fopen_temporary_child(vt, &h, &hp); |
3571 | if (r < 0) | |
3572 | return log_error_errno(r, "Failed to create temporary LUKS header file: %m"); | |
48a09a8f | 3573 | |
a09ae915 DDM |
3574 | /* Weird cryptsetup requirement which requires the header file to be the size of at least one |
3575 | * sector. */ | |
3576 | r = ftruncate(fileno(h), context->sector_size); | |
3577 | if (r < 0) | |
3578 | return log_error_errno(r, "Failed to grow temporary LUKS header file: %m"); | |
3579 | } else { | |
3580 | if (asprintf(&dm_name, "luks-repart-%08" PRIx64, random_u64()) < 0) | |
3581 | return log_oom(); | |
3582 | ||
3583 | vol = path_join("/dev/mapper/", dm_name); | |
3584 | if (!vol) | |
3585 | return log_oom(); | |
3586 | } | |
48a09a8f | 3587 | |
a09ae915 | 3588 | r = sym_crypt_init(&cd, offline ? hp : node); |
48a09a8f DDM |
3589 | if (r < 0) |
3590 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", hp); | |
b9df3536 LP |
3591 | |
3592 | cryptsetup_enable_logging(cd); | |
3593 | ||
a09ae915 DDM |
3594 | if (offline) { |
3595 | /* Disable kernel keyring usage by libcryptsetup as a workaround for | |
3596 | * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/273. This makes sure that we can | |
3597 | * do offline encryption even when repart is running in a container. */ | |
3598 | r = sym_crypt_volume_key_keyring(cd, false); | |
3599 | if (r < 0) | |
3600 | return log_error_errno(r, "Failed to disable kernel keyring: %m"); | |
48a09a8f | 3601 | |
a09ae915 DDM |
3602 | r = sym_crypt_metadata_locking(cd, false); |
3603 | if (r < 0) | |
3604 | return log_error_errno(r, "Failed to disable metadata locking: %m"); | |
48a09a8f | 3605 | |
a09ae915 DDM |
3606 | r = sym_crypt_set_data_offset(cd, LUKS2_METADATA_SIZE / 512); |
3607 | if (r < 0) | |
3608 | return log_error_errno(r, "Failed to set data offset: %m"); | |
3609 | } | |
48a09a8f | 3610 | |
0d12936d | 3611 | r = sym_crypt_format(cd, |
b9df3536 LP |
3612 | CRYPT_LUKS2, |
3613 | "aes", | |
3614 | "xts-plain64", | |
15cad3a2 | 3615 | SD_ID128_TO_UUID_STRING(p->luks_uuid), |
98e0456e DDM |
3616 | NULL, |
3617 | VOLUME_KEY_SIZE, | |
48a09a8f | 3618 | &luks_params); |
b9df3536 LP |
3619 | if (r < 0) |
3620 | return log_error_errno(r, "Failed to LUKS2 format future partition: %m"); | |
3621 | ||
889914ef LP |
3622 | if (IN_SET(p->encrypt, ENCRYPT_KEY_FILE, ENCRYPT_KEY_FILE_TPM2)) { |
3623 | r = sym_crypt_keyslot_add_by_volume_key( | |
3624 | cd, | |
3625 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3626 | NULL, |
3627 | VOLUME_KEY_SIZE, | |
889914ef LP |
3628 | strempty(arg_key), |
3629 | arg_key_size); | |
3630 | if (r < 0) | |
3631 | return log_error_errno(r, "Failed to add LUKS2 key: %m"); | |
48a09a8f DDM |
3632 | |
3633 | passphrase = strempty(arg_key); | |
3634 | passphrase_size = arg_key_size; | |
889914ef LP |
3635 | } |
3636 | ||
3637 | if (IN_SET(p->encrypt, ENCRYPT_TPM2, ENCRYPT_KEY_FILE_TPM2)) { | |
3638 | #if HAVE_TPM2 | |
889914ef LP |
3639 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; |
3640 | _cleanup_(erase_and_freep) void *secret = NULL; | |
02ef97cd | 3641 | _cleanup_free_ void *pubkey = NULL; |
acbb504e WR |
3642 | _cleanup_free_ void *blob = NULL, *hash = NULL, *srk_buf = NULL; |
3643 | size_t secret_size, blob_size, hash_size, pubkey_size = 0, srk_buf_size = 0; | |
5e476b85 | 3644 | ssize_t base64_encoded_size; |
2b92a672 | 3645 | uint16_t pcr_bank, primary_alg; |
889914ef LP |
3646 | int keyslot; |
3647 | ||
02ef97cd LP |
3648 | if (arg_tpm2_public_key_pcr_mask != 0) { |
3649 | r = tpm2_load_pcr_public_key(arg_tpm2_public_key, &pubkey, &pubkey_size); | |
3650 | if (r < 0) { | |
3651 | if (arg_tpm2_public_key || r != -ENOENT) | |
3652 | return log_error_errno(r, "Failed read TPM PCR public key: %m"); | |
3653 | ||
3654 | log_debug_errno(r, "Failed to read TPM2 PCR public key, proceeding without: %m"); | |
3655 | arg_tpm2_public_key_pcr_mask = 0; | |
3656 | } | |
3657 | } | |
3658 | ||
d9b5841d LP |
3659 | r = tpm2_seal(arg_tpm2_device, |
3660 | arg_tpm2_pcr_mask, | |
02ef97cd LP |
3661 | pubkey, pubkey_size, |
3662 | arg_tpm2_public_key_pcr_mask, | |
d9b5841d LP |
3663 | /* pin= */ NULL, |
3664 | &secret, &secret_size, | |
3665 | &blob, &blob_size, | |
3666 | &hash, &hash_size, | |
3667 | &pcr_bank, | |
acbb504e WR |
3668 | &primary_alg, |
3669 | &srk_buf, | |
3670 | &srk_buf_size); | |
889914ef LP |
3671 | if (r < 0) |
3672 | return log_error_errno(r, "Failed to seal to TPM2: %m"); | |
3673 | ||
5e476b85 LP |
3674 | base64_encoded_size = base64mem(secret, secret_size, &base64_encoded); |
3675 | if (base64_encoded_size < 0) | |
3676 | return log_error_errno(base64_encoded_size, "Failed to base64 encode secret key: %m"); | |
889914ef LP |
3677 | |
3678 | r = cryptsetup_set_minimal_pbkdf(cd); | |
3679 | if (r < 0) | |
3680 | return log_error_errno(r, "Failed to set minimal PBKDF: %m"); | |
3681 | ||
3682 | keyslot = sym_crypt_keyslot_add_by_volume_key( | |
3683 | cd, | |
3684 | CRYPT_ANY_SLOT, | |
98e0456e DDM |
3685 | NULL, |
3686 | VOLUME_KEY_SIZE, | |
889914ef | 3687 | base64_encoded, |
5e476b85 | 3688 | base64_encoded_size); |
889914ef | 3689 | if (keyslot < 0) |
48a09a8f | 3690 | return log_error_errno(keyslot, "Failed to add new TPM2 key: %m"); |
889914ef | 3691 | |
f0f4fcae LP |
3692 | r = tpm2_make_luks2_json( |
3693 | keyslot, | |
3694 | arg_tpm2_pcr_mask, | |
3695 | pcr_bank, | |
02ef97cd LP |
3696 | pubkey, pubkey_size, |
3697 | arg_tpm2_public_key_pcr_mask, | |
f0f4fcae LP |
3698 | primary_alg, |
3699 | blob, blob_size, | |
3700 | hash, hash_size, | |
aae6eb96 | 3701 | NULL, 0, /* no salt because tpm2_seal has no pin */ |
acbb504e | 3702 | srk_buf, srk_buf_size, |
f0f4fcae LP |
3703 | 0, |
3704 | &v); | |
889914ef LP |
3705 | if (r < 0) |
3706 | return log_error_errno(r, "Failed to prepare TPM2 JSON token object: %m"); | |
3707 | ||
3708 | r = cryptsetup_add_token_json(cd, v); | |
3709 | if (r < 0) | |
3710 | return log_error_errno(r, "Failed to add TPM2 JSON token to LUKS2 header: %m"); | |
48a09a8f DDM |
3711 | |
3712 | passphrase = base64_encoded; | |
3713 | passphrase_size = strlen(base64_encoded); | |
889914ef LP |
3714 | #else |
3715 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3716 | "Support for TPM2 enrollment not enabled."); | |
3717 | #endif | |
3718 | } | |
b9df3536 | 3719 | |
a09ae915 DDM |
3720 | if (offline) { |
3721 | r = sym_crypt_reencrypt_init_by_passphrase( | |
3722 | cd, | |
3723 | NULL, | |
3724 | passphrase, | |
3725 | passphrase_size, | |
3726 | CRYPT_ANY_SLOT, | |
3727 | 0, | |
3728 | sym_crypt_get_cipher(cd), | |
3729 | sym_crypt_get_cipher_mode(cd), | |
3730 | &reencrypt_params); | |
3731 | if (r < 0) | |
3732 | return log_error_errno(r, "Failed to prepare for reencryption: %m"); | |
b9df3536 | 3733 | |
a09ae915 DDM |
3734 | /* crypt_reencrypt_init_by_passphrase() doesn't actually put the LUKS header at the front, we |
3735 | * have to do that ourselves. */ | |
b9df3536 | 3736 | |
a09ae915 DDM |
3737 | sym_crypt_free(cd); |
3738 | cd = NULL; | |
b9df3536 | 3739 | |
a09ae915 DDM |
3740 | r = sym_crypt_init(&cd, node); |
3741 | if (r < 0) | |
3742 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); | |
b9df3536 | 3743 | |
a09ae915 DDM |
3744 | r = sym_crypt_header_restore(cd, CRYPT_LUKS2, hp); |
3745 | if (r < 0) | |
3746 | return log_error_errno(r, "Failed to place new LUKS header at head of %s: %m", node); | |
b9df3536 | 3747 | |
a09ae915 | 3748 | reencrypt_params.flags &= ~CRYPT_REENCRYPT_INITIALIZE_ONLY; |
b9df3536 | 3749 | |
a09ae915 DDM |
3750 | r = sym_crypt_reencrypt_init_by_passphrase( |
3751 | cd, | |
3752 | NULL, | |
3753 | passphrase, | |
3754 | passphrase_size, | |
3755 | CRYPT_ANY_SLOT, | |
3756 | 0, | |
3757 | NULL, | |
3758 | NULL, | |
3759 | &reencrypt_params); | |
3760 | if (r < 0) | |
3761 | return log_error_errno(r, "Failed to load reencryption context: %m"); | |
b9df3536 | 3762 | |
a09ae915 DDM |
3763 | r = sym_crypt_reencrypt(cd, NULL); |
3764 | if (r < 0) | |
3765 | return log_error_errno(r, "Failed to encrypt %s: %m", node); | |
3766 | } else { | |
3767 | _cleanup_free_ DecryptedPartitionTarget *t = NULL; | |
3768 | _cleanup_close_ int dev_fd = -1; | |
3769 | ||
3770 | r = sym_crypt_activate_by_volume_key( | |
3771 | cd, | |
3772 | dm_name, | |
3773 | NULL, | |
3774 | VOLUME_KEY_SIZE, | |
3775 | arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0); | |
3776 | if (r < 0) | |
3777 | return log_error_errno(r, "Failed to activate LUKS superblock: %m"); | |
3778 | ||
3779 | dev_fd = open(vol, O_RDWR|O_CLOEXEC|O_NOCTTY); | |
3780 | if (dev_fd < 0) | |
3781 | return log_error_errno(errno, "Failed to open LUKS volume '%s': %m", vol); | |
3782 | ||
3783 | if (flock(dev_fd, LOCK_EX) < 0) | |
3784 | return log_error_errno(errno, "Failed to lock '%s': %m", vol); | |
3785 | ||
3786 | t = new(DecryptedPartitionTarget, 1); | |
3787 | if (!t) | |
3788 | return log_oom(); | |
3789 | ||
3790 | *t = (DecryptedPartitionTarget) { | |
3791 | .fd = TAKE_FD(dev_fd), | |
fd9b68d9 | 3792 | .dm_name = TAKE_PTR(dm_name), |
a09ae915 DDM |
3793 | .volume = TAKE_PTR(vol), |
3794 | .device = TAKE_PTR(cd), | |
3795 | }; | |
3796 | ||
3797 | target->decrypted = TAKE_PTR(t); | |
3798 | } | |
48a09a8f DDM |
3799 | |
3800 | log_info("Successfully encrypted future partition %" PRIu64 ".", p->partno); | |
b9df3536 | 3801 | |
3dd8ae5c | 3802 | return 0; |
48a09a8f DDM |
3803 | #else |
3804 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
3805 | "libcryptsetup is not supported or is missing required symbols, cannot encrypt: %m"); | |
3dd8ae5c | 3806 | #endif |
b9df3536 LP |
3807 | } |
3808 | ||
2b392d86 DDM |
3809 | static int partition_format_verity_hash( |
3810 | Context *context, | |
3811 | Partition *p, | |
13bde177 | 3812 | const char *node, |
2b392d86 DDM |
3813 | const char *data_node) { |
3814 | ||
3815 | #if HAVE_LIBCRYPTSETUP | |
3816 | Partition *dp; | |
a64769d6 | 3817 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
2b392d86 | 3818 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
cf18d96f | 3819 | _cleanup_free_ char *hint = NULL; |
2b392d86 DDM |
3820 | _cleanup_free_ uint8_t *rh = NULL; |
3821 | size_t rhs; | |
a64769d6 | 3822 | int r; |
2b392d86 DDM |
3823 | |
3824 | assert(context); | |
3825 | assert(p); | |
deeae10e | 3826 | assert(p->verity == VERITY_HASH); |
2b392d86 DDM |
3827 | assert(data_node); |
3828 | ||
3829 | if (p->dropped) | |
3830 | return 0; | |
3831 | ||
3832 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
3833 | return 0; | |
3834 | ||
5eef7047 DDM |
3835 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
3836 | if (p->copy_blocks_fd >= 0) | |
3837 | return 0; | |
3838 | ||
2b392d86 DDM |
3839 | assert_se(dp = p->siblings[VERITY_DATA]); |
3840 | assert(!dp->dropped); | |
3841 | ||
cf18d96f DDM |
3842 | (void) partition_hint(p, node, &hint); |
3843 | ||
2b392d86 DDM |
3844 | r = dlopen_cryptsetup(); |
3845 | if (r < 0) | |
3846 | return log_error_errno(r, "libcryptsetup not found, cannot setup verity: %m"); | |
3847 | ||
13bde177 DDM |
3848 | if (!node) { |
3849 | r = partition_target_prepare(context, p, p->new_size, /*need_path=*/ true, &t); | |
3850 | if (r < 0) | |
3851 | return r; | |
2b392d86 | 3852 | |
13bde177 DDM |
3853 | node = partition_target_path(t); |
3854 | } | |
3855 | ||
3856 | r = sym_crypt_init(&cd, node); | |
2b392d86 | 3857 | if (r < 0) |
cf18d96f | 3858 | return log_error_errno(r, "Failed to allocate libcryptsetup context for %s: %m", node); |
2b392d86 | 3859 | |
e21be797 DDM |
3860 | cryptsetup_enable_logging(cd); |
3861 | ||
2b392d86 DDM |
3862 | r = sym_crypt_format( |
3863 | cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, | |
3864 | &(struct crypt_params_verity){ | |
3865 | .data_device = data_node, | |
3866 | .flags = CRYPT_VERITY_CREATE_HASH, | |
3867 | .hash_name = "sha256", | |
3868 | .hash_type = 1, | |
3869 | .data_block_size = context->sector_size, | |
3870 | .hash_block_size = context->sector_size, | |
3871 | .salt_size = 32, | |
3872 | }); | |
e21be797 DDM |
3873 | if (r < 0) { |
3874 | /* libcryptsetup reports non-descriptive EIO errors for every I/O failure. Luckily, it | |
3875 | * doesn't clobber errno so let's check for ENOSPC so we can report a better error if the | |
3876 | * partition is too small. */ | |
3877 | if (r == -EIO && errno == ENOSPC) | |
3878 | return log_error_errno(errno, | |
cf18d96f DDM |
3879 | "Verity hash data does not fit in partition %s with size %s", |
3880 | strna(hint), FORMAT_BYTES(p->new_size)); | |
e21be797 | 3881 | |
cf18d96f | 3882 | return log_error_errno(r, "Failed to setup verity hash data of partition %s: %m", strna(hint)); |
e21be797 | 3883 | } |
2b392d86 | 3884 | |
13bde177 DDM |
3885 | if (t) { |
3886 | r = partition_target_sync(context, p, t); | |
3887 | if (r < 0) | |
3888 | return r; | |
3889 | } | |
a64769d6 | 3890 | |
2b392d86 DDM |
3891 | r = sym_crypt_get_volume_key_size(cd); |
3892 | if (r < 0) | |
cf18d96f | 3893 | return log_error_errno(r, "Failed to determine verity root hash size of partition %s: %m", strna(hint)); |
2b392d86 DDM |
3894 | rhs = (size_t) r; |
3895 | ||
3896 | rh = malloc(rhs); | |
3897 | if (!rh) | |
3898 | return log_oom(); | |
3899 | ||
3900 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, (char *) rh, &rhs, NULL, 0); | |
3901 | if (r < 0) | |
cf18d96f | 3902 | return log_error_errno(r, "Failed to get verity root hash of partition %s: %m", strna(hint)); |
2b392d86 DDM |
3903 | |
3904 | assert(rhs >= sizeof(sd_id128_t) * 2); | |
3905 | ||
3906 | if (!dp->new_uuid_is_set) { | |
3907 | memcpy_safe(dp->new_uuid.bytes, rh, sizeof(sd_id128_t)); | |
3908 | dp->new_uuid_is_set = true; | |
3909 | } | |
3910 | ||
3911 | if (!p->new_uuid_is_set) { | |
3912 | memcpy_safe(p->new_uuid.bytes, rh + rhs - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
3913 | p->new_uuid_is_set = true; | |
3914 | } | |
3915 | ||
3916 | p->roothash = TAKE_PTR(rh); | |
3917 | p->roothash_size = rhs; | |
3918 | ||
3919 | return 0; | |
3920 | #else | |
3921 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "libcryptsetup is not supported, cannot setup verity hashes: %m"); | |
3922 | #endif | |
3923 | } | |
3924 | ||
4ecd39c5 DDM |
3925 | static int sign_verity_roothash( |
3926 | const uint8_t *roothash, | |
3927 | size_t roothash_size, | |
3928 | uint8_t **ret_signature, | |
3929 | size_t *ret_signature_size) { | |
3930 | ||
3931 | #if HAVE_OPENSSL | |
3932 | _cleanup_(BIO_freep) BIO *rb = NULL; | |
3933 | _cleanup_(PKCS7_freep) PKCS7 *p7 = NULL; | |
3934 | _cleanup_free_ char *hex = NULL; | |
3935 | _cleanup_free_ uint8_t *sig = NULL; | |
3936 | int sigsz; | |
3937 | ||
3938 | assert(roothash); | |
3939 | assert(roothash_size > 0); | |
3940 | assert(ret_signature); | |
3941 | assert(ret_signature_size); | |
3942 | ||
3943 | hex = hexmem(roothash, roothash_size); | |
3944 | if (!hex) | |
3945 | return log_oom(); | |
3946 | ||
3947 | rb = BIO_new_mem_buf(hex, -1); | |
3948 | if (!rb) | |
3949 | return log_oom(); | |
3950 | ||
3951 | p7 = PKCS7_sign(arg_certificate, arg_private_key, NULL, rb, PKCS7_DETACHED|PKCS7_NOATTR|PKCS7_BINARY); | |
3952 | if (!p7) | |
3953 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to calculate PKCS7 signature: %s", | |
3954 | ERR_error_string(ERR_get_error(), NULL)); | |
3955 | ||
3956 | sigsz = i2d_PKCS7(p7, &sig); | |
3957 | if (sigsz < 0) | |
3958 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to convert PKCS7 signature to DER: %s", | |
3959 | ERR_error_string(ERR_get_error(), NULL)); | |
3960 | ||
3961 | *ret_signature = TAKE_PTR(sig); | |
3962 | *ret_signature_size = sigsz; | |
3963 | ||
3964 | return 0; | |
3965 | #else | |
3966 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot setup verity signature: %m"); | |
3967 | #endif | |
3968 | } | |
3969 | ||
3970 | static int partition_format_verity_sig(Context *context, Partition *p) { | |
3971 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
3972 | _cleanup_free_ uint8_t *sig = NULL; | |
cf18d96f | 3973 | _cleanup_free_ char *text = NULL, *hint = NULL; |
4ecd39c5 DDM |
3974 | Partition *hp; |
3975 | uint8_t fp[X509_FINGERPRINT_SIZE]; | |
d28c6ce6 | 3976 | size_t sigsz = 0; /* avoid false maybe-uninitialized warning */ |
4ecd39c5 DDM |
3977 | int whole_fd, r; |
3978 | ||
3979 | assert(p->verity == VERITY_SIG); | |
3980 | ||
3981 | if (p->dropped) | |
3982 | return 0; | |
3983 | ||
3984 | if (PARTITION_EXISTS(p)) | |
3985 | return 0; | |
3986 | ||
cf18d96f DDM |
3987 | (void) partition_hint(p, context->node, &hint); |
3988 | ||
4ecd39c5 DDM |
3989 | assert_se(hp = p->siblings[VERITY_HASH]); |
3990 | assert(!hp->dropped); | |
3991 | ||
3992 | assert(arg_certificate); | |
3993 | ||
3994 | assert_se((whole_fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
3995 | ||
3996 | r = sign_verity_roothash(hp->roothash, hp->roothash_size, &sig, &sigsz); | |
3997 | if (r < 0) | |
3998 | return r; | |
3999 | ||
4000 | r = x509_fingerprint(arg_certificate, fp); | |
4001 | if (r < 0) | |
4002 | return log_error_errno(r, "Unable to calculate X509 certificate fingerprint: %m"); | |
4003 | ||
4004 | r = json_build(&v, | |
4005 | JSON_BUILD_OBJECT( | |
4006 | JSON_BUILD_PAIR("rootHash", JSON_BUILD_HEX(hp->roothash, hp->roothash_size)), | |
4007 | JSON_BUILD_PAIR( | |
4008 | "certificateFingerprint", | |
4009 | JSON_BUILD_HEX(fp, sizeof(fp)) | |
4010 | ), | |
4011 | JSON_BUILD_PAIR("signature", JSON_BUILD_BASE64(sig, sigsz)) | |
4012 | ) | |
4013 | ); | |
4014 | if (r < 0) | |
cf18d96f | 4015 | return log_error_errno(r, "Failed to build verity signature JSON object: %m"); |
4ecd39c5 DDM |
4016 | |
4017 | r = json_variant_format(v, 0, &text); | |
4018 | if (r < 0) | |
cf18d96f | 4019 | return log_error_errno(r, "Failed to format verity signature JSON object: %m"); |
4ecd39c5 | 4020 | |
d28c6ce6 | 4021 | r = strgrowpad0(&text, p->new_size); |
4ecd39c5 | 4022 | if (r < 0) |
d28c6ce6 | 4023 | return log_error_errno(r, "Failed to pad string to %s", FORMAT_BYTES(p->new_size)); |
4ecd39c5 DDM |
4024 | |
4025 | if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1) | |
cf18d96f | 4026 | return log_error_errno(errno, "Failed to seek to partition %s offset: %m", strna(hint)); |
4ecd39c5 | 4027 | |
d28c6ce6 | 4028 | r = loop_write(whole_fd, text, p->new_size, /*do_poll=*/ false); |
4ecd39c5 | 4029 | if (r < 0) |
cf18d96f | 4030 | return log_error_errno(r, "Failed to write verity signature to partition %s: %m", strna(hint)); |
4ecd39c5 DDM |
4031 | |
4032 | if (fsync(whole_fd) < 0) | |
cf18d96f | 4033 | return log_error_errno(errno, "Failed to synchronize partition %s: %m", strna(hint)); |
4ecd39c5 DDM |
4034 | |
4035 | return 0; | |
4036 | } | |
4037 | ||
757bc2e4 | 4038 | static int context_copy_blocks(Context *context) { |
a64769d6 | 4039 | int r; |
757bc2e4 LP |
4040 | |
4041 | assert(context); | |
4042 | ||
4043 | /* Copy in file systems on the block level */ | |
4044 | ||
4045 | LIST_FOREACH(partitions, p, context->partitions) { | |
a64769d6 | 4046 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
757bc2e4 LP |
4047 | |
4048 | if (p->copy_blocks_fd < 0) | |
4049 | continue; | |
4050 | ||
4051 | if (p->dropped) | |
4052 | continue; | |
4053 | ||
4054 | if (PARTITION_EXISTS(p)) /* Never copy over existing partitions */ | |
4055 | continue; | |
4056 | ||
821d0cf0 | 4057 | if (partition_type_defer(p->type)) |
81d1098b DDM |
4058 | continue; |
4059 | ||
757bc2e4 LP |
4060 | assert(p->new_size != UINT64_MAX); |
4061 | assert(p->copy_blocks_size != UINT64_MAX); | |
48a09a8f | 4062 | assert(p->new_size >= p->copy_blocks_size + (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
757bc2e4 | 4063 | |
a64769d6 DDM |
4064 | r = partition_target_prepare(context, p, p->new_size, |
4065 | /*need_path=*/ p->encrypt != ENCRYPT_OFF || p->siblings[VERITY_HASH], | |
4066 | &t); | |
4067 | if (r < 0) | |
4068 | return r; | |
757bc2e4 | 4069 | |
a09ae915 DDM |
4070 | if (p->encrypt != ENCRYPT_OFF && t->loop) { |
4071 | r = partition_encrypt(context, p, t, /* offline = */ false); | |
4072 | if (r < 0) | |
4073 | return r; | |
4074 | } | |
4075 | ||
2b59bf51 ZJS |
4076 | log_info("Copying in '%s' (%s) on block level into future partition %" PRIu64 ".", |
4077 | p->copy_blocks_path, FORMAT_BYTES(p->copy_blocks_size), p->partno); | |
757bc2e4 | 4078 | |
1e46985a DDM |
4079 | if (p->copy_blocks_offset != UINT64_MAX && lseek(p->copy_blocks_fd, p->copy_blocks_offset, SEEK_SET) < 0) |
4080 | return log_error_errno(errno, "Failed to seek to copy blocks offset in %s: %m", p->copy_blocks_path); | |
4081 | ||
a64769d6 | 4082 | r = copy_bytes(p->copy_blocks_fd, partition_target_fd(t), p->copy_blocks_size, COPY_REFLINK); |
757bc2e4 LP |
4083 | if (r < 0) |
4084 | return log_error_errno(r, "Failed to copy in data from '%s': %m", p->copy_blocks_path); | |
4085 | ||
a09ae915 DDM |
4086 | log_info("Copying in of '%s' on block level completed.", p->copy_blocks_path); |
4087 | ||
4088 | if (p->encrypt != ENCRYPT_OFF && !t->loop) { | |
4089 | r = partition_encrypt(context, p, t, /* offline = */ true); | |
b9df3536 LP |
4090 | if (r < 0) |
4091 | return r; | |
b9df3536 LP |
4092 | } |
4093 | ||
a64769d6 DDM |
4094 | r = partition_target_sync(context, p, t); |
4095 | if (r < 0) | |
4096 | return r; | |
48a09a8f | 4097 | |
821d0cf0 | 4098 | if (p->siblings[VERITY_HASH] && !partition_type_defer(p->siblings[VERITY_HASH]->type)) { |
a64769d6 | 4099 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
13bde177 | 4100 | /* node = */ NULL, partition_target_path(t)); |
2b392d86 DDM |
4101 | if (r < 0) |
4102 | return r; | |
4103 | } | |
4ecd39c5 | 4104 | |
821d0cf0 | 4105 | if (p->siblings[VERITY_SIG] && !partition_type_defer(p->siblings[VERITY_SIG]->type)) { |
4ecd39c5 DDM |
4106 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); |
4107 | if (r < 0) | |
4108 | return r; | |
4109 | } | |
757bc2e4 LP |
4110 | } |
4111 | ||
4112 | return 0; | |
4113 | } | |
4114 | ||
e57b7020 DDM |
4115 | static int add_exclude_path(const char *path, Hashmap **denylist, DenyType type) { |
4116 | _cleanup_free_ struct stat *st = NULL; | |
4117 | int r; | |
4118 | ||
4119 | assert(path); | |
4120 | assert(denylist); | |
4121 | ||
4122 | st = new(struct stat, 1); | |
4123 | if (!st) | |
4124 | return log_oom(); | |
4125 | ||
4126 | r = chase_and_stat(path, arg_root, CHASE_PREFIX_ROOT, NULL, st); | |
4127 | if (r == -ENOENT) | |
4128 | return 0; | |
4129 | if (r < 0) | |
4130 | return log_error_errno(r, "Failed to stat source file '%s/%s': %m", strempty(arg_root), path); | |
4131 | ||
4132 | r = hashmap_ensure_put(denylist, &inode_hash_ops, st, INT_TO_PTR(type)); | |
4133 | if (r == -EEXIST) | |
4134 | return 0; | |
4135 | if (r < 0) | |
4136 | return log_oom(); | |
4137 | if (r > 0) | |
4138 | TAKE_PTR(st); | |
4139 | ||
4140 | return 0; | |
4141 | } | |
4142 | ||
4143 | static int make_copy_files_denylist( | |
4144 | Context *context, | |
4145 | const Partition *p, | |
4146 | const char *source, | |
4147 | const char *target, | |
4148 | Hashmap **ret) { | |
4149 | ||
4150 | _cleanup_hashmap_free_ Hashmap *denylist = NULL; | |
4151 | int r; | |
4152 | ||
4153 | assert(context); | |
4154 | assert(p); | |
4155 | assert(source); | |
4156 | assert(target); | |
4157 | assert(ret); | |
4158 | ||
4159 | /* Always exclude the top level APIVFS and temporary directories since the contents of these | |
4160 | * directories are almost certainly not intended to end up in an image. */ | |
4161 | ||
4162 | NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) { | |
4163 | r = add_exclude_path(s, &denylist, DENY_CONTENTS); | |
4164 | if (r < 0) | |
4165 | return r; | |
4166 | } | |
4167 | ||
4168 | /* Add the user configured excludes. */ | |
4169 | ||
600bf76c | 4170 | STRV_FOREACH(e, p->exclude_files_source) { |
e57b7020 DDM |
4171 | r = add_exclude_path(*e, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE); |
4172 | if (r < 0) | |
4173 | return r; | |
4174 | } | |
4175 | ||
600bf76c DDM |
4176 | STRV_FOREACH(e, p->exclude_files_target) { |
4177 | _cleanup_free_ char *path = NULL; | |
4178 | ||
4179 | const char *s = path_startswith(*e, target); | |
4180 | if (!s) | |
4181 | continue; | |
4182 | ||
4183 | path = path_join(source, s); | |
4184 | if (!path) | |
4185 | return log_oom(); | |
4186 | ||
4187 | r = add_exclude_path(path, &denylist, endswith(*e, "/") ? DENY_CONTENTS : DENY_INODE); | |
4188 | if (r < 0) | |
4189 | return r; | |
4190 | } | |
4191 | ||
e57b7020 DDM |
4192 | /* If we're populating a root partition, we don't want any files to end up under the APIVFS mount |
4193 | * points. While we already exclude <source>/proc, users could still do something such as | |
4194 | * "CopyFiles=/abc:/". Now, if /abc has a proc subdirectory with files in it, those will end up in | |
4195 | * the top level proc directory in the root partition, which we want to avoid. To deal with these | |
4196 | * cases, whenever we're populating a root partition and the target of CopyFiles= is the root | |
4197 | * directory of the root partition, we exclude all directories under the source that are named after | |
4198 | * APIVFS directories or named after mount points of other partitions that are also going to be part | |
4199 | * of the image. */ | |
4200 | ||
4201 | if (p->type.designator == PARTITION_ROOT && empty_or_root(target)) { | |
4202 | LIST_FOREACH(partitions, q, context->partitions) { | |
4203 | if (q->type.designator == PARTITION_ROOT) | |
4204 | continue; | |
4205 | ||
4206 | const char *sources = gpt_partition_type_mountpoint_nulstr(q->type); | |
4207 | if (!sources) | |
4208 | continue; | |
4209 | ||
4210 | NULSTR_FOREACH(s, sources) { | |
4211 | _cleanup_free_ char *path = NULL; | |
4212 | ||
4213 | /* Exclude only the children of partition mount points so that the nested | |
4214 | * partition mount point itself still ends up in the upper partition. */ | |
4215 | ||
4216 | path = path_join(source, s); | |
4217 | if (!path) | |
4218 | return -ENOMEM; | |
4219 | ||
4220 | r = add_exclude_path(path, &denylist, DENY_CONTENTS); | |
4221 | if (r < 0) | |
4222 | return r; | |
4223 | } | |
4224 | } | |
4225 | ||
4226 | NULSTR_FOREACH(s, APIVFS_TMP_DIRS_NULSTR) { | |
4227 | _cleanup_free_ char *path = NULL; | |
4228 | ||
4229 | path = path_join(source, s); | |
4230 | if (!path) | |
4231 | return -ENOMEM; | |
4232 | ||
4233 | r = add_exclude_path(path, &denylist, DENY_CONTENTS); | |
4234 | if (r < 0) | |
4235 | return r; | |
4236 | } | |
4237 | } | |
4238 | ||
4239 | *ret = TAKE_PTR(denylist); | |
4240 | return 0; | |
4241 | } | |
4242 | ||
4243 | static int do_copy_files(Context *context, Partition *p, const char *root) { | |
8a794850 LP |
4244 | int r; |
4245 | ||
4246 | assert(p); | |
92cd7e7c | 4247 | assert(root); |
8a794850 | 4248 | |
3e451460 DDM |
4249 | /* copy_tree_at() automatically copies the permissions of source directories to target directories if |
4250 | * it created them. However, the root directory is created by us, so we have to manually take care | |
4251 | * that it is initialized. We use the first source directory targeting "/" as the metadata source for | |
4252 | * the root directory. */ | |
4253 | STRV_FOREACH_PAIR(source, target, p->copy_files) { | |
4254 | _cleanup_close_ int rfd = -EBADF, sfd = -EBADF; | |
4255 | ||
4256 | if (!path_equal(*target, "/")) | |
4257 | continue; | |
4258 | ||
4259 | rfd = open(root, O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); | |
4260 | if (rfd < 0) | |
4261 | return rfd; | |
4262 | ||
f461a28d | 4263 | sfd = chase_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_PATH|O_DIRECTORY|O_CLOEXEC|O_NOCTTY, NULL); |
3e451460 DDM |
4264 | if (sfd < 0) |
4265 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
4266 | ||
4267 | (void) copy_xattr(sfd, NULL, rfd, NULL, COPY_ALL_XATTRS); | |
4268 | (void) copy_access(sfd, rfd); | |
4269 | (void) copy_times(sfd, rfd, 0); | |
4270 | ||
4271 | break; | |
4272 | } | |
4273 | ||
8a794850 | 4274 | STRV_FOREACH_PAIR(source, target, p->copy_files) { |
e57b7020 | 4275 | _cleanup_hashmap_free_ Hashmap *denylist = NULL; |
254d1313 | 4276 | _cleanup_close_ int sfd = -EBADF, pfd = -EBADF, tfd = -EBADF; |
8a794850 | 4277 | |
e57b7020 DDM |
4278 | r = make_copy_files_denylist(context, p, *source, *target, &denylist); |
4279 | if (r < 0) | |
4280 | return r; | |
4281 | ||
f461a28d | 4282 | sfd = chase_and_open(*source, arg_root, CHASE_PREFIX_ROOT, O_CLOEXEC|O_NOCTTY, NULL); |
8a794850 LP |
4283 | if (sfd < 0) |
4284 | return log_error_errno(sfd, "Failed to open source file '%s%s': %m", strempty(arg_root), *source); | |
4285 | ||
4286 | r = fd_verify_regular(sfd); | |
4287 | if (r < 0) { | |
4288 | if (r != -EISDIR) | |
4289 | return log_error_errno(r, "Failed to check type of source file '%s': %m", *source); | |
4290 | ||
4291 | /* We are looking at a directory */ | |
f461a28d | 4292 | tfd = chase_and_open(*target, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 4293 | if (tfd < 0) { |
f21a3a82 LP |
4294 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
4295 | ||
8a794850 LP |
4296 | if (tfd != -ENOENT) |
4297 | return log_error_errno(tfd, "Failed to open target directory '%s': %m", *target); | |
4298 | ||
f21a3a82 LP |
4299 | r = path_extract_filename(*target, &fn); |
4300 | if (r < 0) | |
4301 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
4302 | ||
4303 | r = path_extract_directory(*target, &dn); | |
4304 | if (r < 0) | |
4305 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
4306 | ||
92cd7e7c | 4307 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
4308 | if (r < 0) |
4309 | return log_error_errno(r, "Failed to create parent directory '%s': %m", dn); | |
4310 | ||
f461a28d | 4311 | pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 LP |
4312 | if (pfd < 0) |
4313 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); | |
4314 | ||
652d9040 LP |
4315 | r = copy_tree_at( |
4316 | sfd, ".", | |
6020d00d | 4317 | pfd, fn, |
ff1b55ff | 4318 | UID_INVALID, GID_INVALID, |
ab645e0a | 4319 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE, |
c0fad2d9 | 4320 | denylist); |
8a794850 | 4321 | } else |
652d9040 LP |
4322 | r = copy_tree_at( |
4323 | sfd, ".", | |
4324 | tfd, ".", | |
ff1b55ff | 4325 | UID_INVALID, GID_INVALID, |
ab645e0a | 4326 | COPY_REFLINK|COPY_HOLES|COPY_MERGE|COPY_REPLACE|COPY_SIGINT|COPY_HARDLINKS|COPY_ALL_XATTRS|COPY_GRACEFUL_WARN|COPY_TRUNCATE, |
c0fad2d9 | 4327 | denylist); |
8a794850 | 4328 | if (r < 0) |
cf2ed23c DDM |
4329 | return log_error_errno(r, "Failed to copy '%s%s' to '%s%s': %m", |
4330 | strempty(arg_root), *source, strempty(root), *target); | |
8a794850 | 4331 | } else { |
f21a3a82 LP |
4332 | _cleanup_free_ char *dn = NULL, *fn = NULL; |
4333 | ||
8a794850 LP |
4334 | /* We are looking at a regular file */ |
4335 | ||
f21a3a82 LP |
4336 | r = path_extract_filename(*target, &fn); |
4337 | if (r == -EADDRNOTAVAIL || r == O_DIRECTORY) | |
4338 | return log_error_errno(SYNTHETIC_ERRNO(EISDIR), | |
4339 | "Target path '%s' refers to a directory, but source path '%s' refers to regular file, can't copy.", *target, *source); | |
4340 | if (r < 0) | |
4341 | return log_error_errno(r, "Failed to extract filename from '%s': %m", *target); | |
4342 | ||
4343 | r = path_extract_directory(*target, &dn); | |
4344 | if (r < 0) | |
4345 | return log_error_errno(r, "Failed to extract directory from '%s': %m", *target); | |
4346 | ||
92cd7e7c | 4347 | r = mkdir_p_root(root, dn, UID_INVALID, GID_INVALID, 0755); |
8a794850 LP |
4348 | if (r < 0) |
4349 | return log_error_errno(r, "Failed to create parent directory: %m"); | |
4350 | ||
f461a28d | 4351 | pfd = chase_and_open(dn, root, CHASE_PREFIX_ROOT, O_RDONLY|O_DIRECTORY|O_CLOEXEC, NULL); |
8a794850 | 4352 | if (pfd < 0) |
a0ff9971 | 4353 | return log_error_errno(pfd, "Failed to open parent directory of target: %m"); |
8a794850 | 4354 | |
e2819067 | 4355 | tfd = openat(pfd, fn, O_CREAT|O_EXCL|O_WRONLY|O_CLOEXEC, 0700); |
8a794850 LP |
4356 | if (tfd < 0) |
4357 | return log_error_errno(errno, "Failed to create target file '%s': %m", *target); | |
4358 | ||
ab645e0a | 4359 | r = copy_bytes(sfd, tfd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_SIGINT|COPY_TRUNCATE); |
8a794850 | 4360 | if (r < 0) |
554a2b64 | 4361 | return log_error_errno(r, "Failed to copy '%s' to '%s%s': %m", *source, strempty(arg_root), *target); |
8a794850 | 4362 | |
c17cfe6e | 4363 | (void) copy_xattr(sfd, NULL, tfd, NULL, COPY_ALL_XATTRS); |
8a794850 LP |
4364 | (void) copy_access(sfd, tfd); |
4365 | (void) copy_times(sfd, tfd, 0); | |
4366 | } | |
4367 | } | |
4368 | ||
4369 | return 0; | |
4370 | } | |
4371 | ||
49fb6e97 | 4372 | static int do_make_directories(Partition *p, const char *root) { |
d83d8048 LP |
4373 | int r; |
4374 | ||
4375 | assert(p); | |
92cd7e7c | 4376 | assert(root); |
d83d8048 LP |
4377 | |
4378 | STRV_FOREACH(d, p->make_directories) { | |
4379 | ||
ff1b55ff | 4380 | r = mkdir_p_root(root, *d, UID_INVALID, GID_INVALID, 0755); |
d83d8048 LP |
4381 | if (r < 0) |
4382 | return log_error_errno(r, "Failed to create directory '%s' in file system: %m", *d); | |
4383 | } | |
4384 | ||
4385 | return 0; | |
4386 | } | |
4387 | ||
d3201eb4 DDM |
4388 | static bool partition_needs_populate(Partition *p) { |
4389 | assert(p); | |
4390 | return !strv_isempty(p->copy_files) || !strv_isempty(p->make_directories); | |
4391 | } | |
4392 | ||
e57b7020 | 4393 | static int partition_populate_directory(Context *context, Partition *p, char **ret) { |
95bfd3cd | 4394 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
1eb86ddd | 4395 | const char *vt; |
95bfd3cd DDM |
4396 | int r; |
4397 | ||
e59678b2 | 4398 | assert(ret); |
95bfd3cd | 4399 | |
b24bfd6e DDM |
4400 | log_info("Populating %s filesystem.", p->format); |
4401 | ||
1eb86ddd DDM |
4402 | r = var_tmp_dir(&vt); |
4403 | if (r < 0) | |
4404 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
95bfd3cd | 4405 | |
1eb86ddd DDM |
4406 | r = tempfn_random_child(vt, "repart", &root); |
4407 | if (r < 0) | |
4408 | return log_error_errno(r, "Failed to generate temporary directory: %m"); | |
4409 | ||
4410 | r = mkdir(root, 0755); | |
4411 | if (r < 0) | |
4412 | return log_error_errno(errno, "Failed to create temporary directory: %m"); | |
0b34f351 | 4413 | |
e57b7020 | 4414 | r = do_copy_files(context, p, root); |
95bfd3cd DDM |
4415 | if (r < 0) |
4416 | return r; | |
4417 | ||
49fb6e97 | 4418 | r = do_make_directories(p, root); |
95bfd3cd DDM |
4419 | if (r < 0) |
4420 | return r; | |
4421 | ||
b24bfd6e DDM |
4422 | log_info("Successfully populated %s filesystem.", p->format); |
4423 | ||
e59678b2 | 4424 | *ret = TAKE_PTR(root); |
95bfd3cd DDM |
4425 | return 0; |
4426 | } | |
4427 | ||
e57b7020 | 4428 | static int partition_populate_filesystem(Context *context, Partition *p, const char *node) { |
8a794850 LP |
4429 | int r; |
4430 | ||
4431 | assert(p); | |
4432 | assert(node); | |
4433 | ||
b24bfd6e | 4434 | log_info("Populating %s filesystem.", p->format); |
8a794850 LP |
4435 | |
4436 | /* We copy in a child process, since we have to mount the fs for that, and we don't want that fs to | |
4437 | * appear in the host namespace. Hence we fork a child that has its own file system namespace and | |
4438 | * detached mount propagation. */ | |
4439 | ||
4440 | r = safe_fork("(sd-copy)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, NULL); | |
4441 | if (r < 0) | |
4442 | return r; | |
4443 | if (r == 0) { | |
4444 | static const char fs[] = "/run/systemd/mount-root"; | |
4445 | /* This is a child process with its own mount namespace and propagation to host turned off */ | |
4446 | ||
4447 | r = mkdir_p(fs, 0700); | |
4448 | if (r < 0) { | |
4449 | log_error_errno(r, "Failed to create mount point: %m"); | |
4450 | _exit(EXIT_FAILURE); | |
4451 | } | |
4452 | ||
511a8cfe | 4453 | if (mount_nofollow_verbose(LOG_ERR, node, fs, p->format, MS_NOATIME|MS_NODEV|MS_NOEXEC|MS_NOSUID, NULL) < 0) |
8a794850 LP |
4454 | _exit(EXIT_FAILURE); |
4455 | ||
e57b7020 | 4456 | if (do_copy_files(context, p, fs) < 0) |
8a794850 LP |
4457 | _exit(EXIT_FAILURE); |
4458 | ||
49fb6e97 | 4459 | if (do_make_directories(p, fs) < 0) |
d83d8048 LP |
4460 | _exit(EXIT_FAILURE); |
4461 | ||
8a794850 LP |
4462 | r = syncfs_path(AT_FDCWD, fs); |
4463 | if (r < 0) { | |
4464 | log_error_errno(r, "Failed to synchronize written files: %m"); | |
4465 | _exit(EXIT_FAILURE); | |
4466 | } | |
4467 | ||
4468 | _exit(EXIT_SUCCESS); | |
4469 | } | |
4470 | ||
b24bfd6e | 4471 | log_info("Successfully populated %s filesystem.", p->format); |
8a794850 LP |
4472 | return 0; |
4473 | } | |
4474 | ||
53171c04 | 4475 | static int context_mkfs(Context *context) { |
a64769d6 | 4476 | int r; |
53171c04 LP |
4477 | |
4478 | assert(context); | |
4479 | ||
4480 | /* Make a file system */ | |
4481 | ||
4482 | LIST_FOREACH(partitions, p, context->partitions) { | |
e59678b2 | 4483 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
a64769d6 | 4484 | _cleanup_(partition_target_freep) PartitionTarget *t = NULL; |
4b8ce14f | 4485 | _cleanup_strv_free_ char **extra_mkfs_options = NULL; |
53171c04 LP |
4486 | |
4487 | if (p->dropped) | |
4488 | continue; | |
4489 | ||
4490 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
4491 | continue; | |
4492 | ||
4493 | if (!p->format) | |
4494 | continue; | |
4495 | ||
c4a87b76 DDM |
4496 | /* Minimized partitions will use the copy blocks logic so let's make sure to skip those here. */ |
4497 | if (p->copy_blocks_fd >= 0) | |
4498 | continue; | |
4499 | ||
821d0cf0 | 4500 | if (partition_type_defer(p->type)) |
81d1098b DDM |
4501 | continue; |
4502 | ||
53171c04 LP |
4503 | assert(p->offset != UINT64_MAX); |
4504 | assert(p->new_size != UINT64_MAX); | |
48a09a8f | 4505 | assert(p->new_size >= (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0)); |
53171c04 | 4506 | |
a64769d6 DDM |
4507 | /* If we're doing encryption, we make sure we keep free space at the end which is required |
4508 | * for cryptsetup's offline encryption. */ | |
4509 | r = partition_target_prepare(context, p, | |
4510 | p->new_size - (p->encrypt != ENCRYPT_OFF ? LUKS2_METADATA_KEEP_FREE : 0), | |
4511 | /*need_path=*/ true, | |
4512 | &t); | |
53171c04 | 4513 | if (r < 0) |
a64769d6 | 4514 | return r; |
53171c04 | 4515 | |
a09ae915 DDM |
4516 | if (p->encrypt != ENCRYPT_OFF && t->loop) { |
4517 | r = partition_target_grow(t, p->new_size); | |
4518 | if (r < 0) | |
4519 | return r; | |
4520 | ||
4521 | r = partition_encrypt(context, p, t, /* offline = */ false); | |
4522 | if (r < 0) | |
4523 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
4524 | } | |
4525 | ||
53171c04 LP |
4526 | log_info("Formatting future partition %" PRIu64 ".", p->partno); |
4527 | ||
d3201eb4 DDM |
4528 | /* If we're not writing to a loop device or if we're populating a read-only filesystem, we |
4529 | * have to populate using the filesystem's mkfs's --root (or equivalent) option. To do that, | |
4530 | * we need to set up the final directory tree beforehand. */ | |
4531 | ||
4532 | if (partition_needs_populate(p) && (!t->loop || fstype_is_ro(p->format))) { | |
4533 | if (!mkfs_supports_root_option(p->format)) | |
4534 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
4535 | "Loop device access is required to populate %s filesystems.", | |
4536 | p->format); | |
95bfd3cd | 4537 | |
e57b7020 | 4538 | r = partition_populate_directory(context, p, &root); |
143c3c08 DDM |
4539 | if (r < 0) |
4540 | return r; | |
4541 | } | |
95bfd3cd | 4542 | |
4b8ce14f DDM |
4543 | r = mkfs_options_from_env("REPART", p->format, &extra_mkfs_options); |
4544 | if (r < 0) | |
4545 | return log_error_errno(r, | |
4546 | "Failed to determine mkfs command line options for '%s': %m", | |
4547 | p->format); | |
4548 | ||
a64769d6 | 4549 | r = make_filesystem(partition_target_path(t), p->format, strempty(p->new_label), root, |
2bc161dd DDM |
4550 | p->fs_uuid, arg_discard, /* quiet = */ false, context->sector_size, |
4551 | extra_mkfs_options); | |
48a09a8f | 4552 | if (r < 0) |
53171c04 LP |
4553 | return r; |
4554 | ||
4555 | log_info("Successfully formatted future partition %" PRIu64 ".", p->partno); | |
4556 | ||
d3201eb4 DDM |
4557 | /* If we're writing to a loop device, we can now mount the empty filesystem and populate it. */ |
4558 | if (partition_needs_populate(p) && !root) { | |
4559 | assert(t->loop); | |
4560 | ||
a09ae915 | 4561 | r = partition_populate_filesystem(context, p, partition_target_path(t)); |
48a09a8f | 4562 | if (r < 0) |
143c3c08 | 4563 | return r; |
b9df3536 LP |
4564 | } |
4565 | ||
a09ae915 | 4566 | if (p->encrypt != ENCRYPT_OFF && !t->loop) { |
a64769d6 | 4567 | r = partition_target_grow(t, p->new_size); |
b9df3536 | 4568 | if (r < 0) |
a64769d6 | 4569 | return r; |
b9df3536 | 4570 | |
a09ae915 | 4571 | r = partition_encrypt(context, p, t, /* offline = */ true); |
48a09a8f DDM |
4572 | if (r < 0) |
4573 | return log_error_errno(r, "Failed to encrypt device: %m"); | |
b9df3536 | 4574 | } |
8a794850 | 4575 | |
48a09a8f DDM |
4576 | /* Note that we always sync explicitly here, since mkfs.fat doesn't do that on its own, and |
4577 | * if we don't sync before detaching a block device the in-flight sectors possibly won't hit | |
4578 | * the disk. */ | |
4579 | ||
a64769d6 | 4580 | r = partition_target_sync(context, p, t); |
53171c04 | 4581 | if (r < 0) |
a64769d6 | 4582 | return r; |
b5b7879a | 4583 | |
821d0cf0 | 4584 | if (p->siblings[VERITY_HASH] && !partition_type_defer(p->siblings[VERITY_HASH]->type)) { |
a64769d6 | 4585 | r = partition_format_verity_hash(context, p->siblings[VERITY_HASH], |
13bde177 | 4586 | /* node = */ NULL, partition_target_path(t)); |
2b392d86 DDM |
4587 | if (r < 0) |
4588 | return r; | |
b5b7879a | 4589 | } |
4ecd39c5 | 4590 | |
821d0cf0 | 4591 | if (p->siblings[VERITY_SIG] && !partition_type_defer(p->siblings[VERITY_SIG]->type)) { |
4ecd39c5 DDM |
4592 | r = partition_format_verity_sig(context, p->siblings[VERITY_SIG]); |
4593 | if (r < 0) | |
4594 | return r; | |
4595 | } | |
b5b7879a DDM |
4596 | } |
4597 | ||
4598 | return 0; | |
4599 | } | |
4600 | ||
b456191d DDM |
4601 | static int parse_x509_certificate(const char *certificate, size_t certificate_size, X509 **ret) { |
4602 | #if HAVE_OPENSSL | |
4603 | _cleanup_(X509_freep) X509 *cert = NULL; | |
4604 | _cleanup_(BIO_freep) BIO *cb = NULL; | |
4605 | ||
4606 | assert(certificate); | |
4607 | assert(certificate_size > 0); | |
4608 | assert(ret); | |
4609 | ||
4610 | cb = BIO_new_mem_buf(certificate, certificate_size); | |
4611 | if (!cb) | |
4612 | return log_oom(); | |
4613 | ||
4614 | cert = PEM_read_bio_X509(cb, NULL, NULL, NULL); | |
4615 | if (!cert) | |
4616 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Failed to parse X.509 certificate: %s", | |
4617 | ERR_error_string(ERR_get_error(), NULL)); | |
4618 | ||
4619 | if (ret) | |
4620 | *ret = TAKE_PTR(cert); | |
4621 | ||
4622 | return 0; | |
4623 | #else | |
4624 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse X509 certificate."); | |
4625 | #endif | |
4626 | } | |
4627 | ||
4628 | static int parse_private_key(const char *key, size_t key_size, EVP_PKEY **ret) { | |
4629 | #if HAVE_OPENSSL | |
4630 | _cleanup_(BIO_freep) BIO *kb = NULL; | |
4631 | _cleanup_(EVP_PKEY_freep) EVP_PKEY *pk = NULL; | |
4632 | ||
4633 | assert(key); | |
4634 | assert(key_size > 0); | |
4635 | assert(ret); | |
4636 | ||
4637 | kb = BIO_new_mem_buf(key, key_size); | |
4638 | if (!kb) | |
4639 | return log_oom(); | |
4640 | ||
4641 | pk = PEM_read_bio_PrivateKey(kb, NULL, NULL, NULL); | |
4642 | if (!pk) | |
4643 | return log_error_errno(SYNTHETIC_ERRNO(EIO), "Failed to parse PEM private key: %s", | |
4644 | ERR_error_string(ERR_get_error(), NULL)); | |
4645 | ||
4646 | if (ret) | |
4647 | *ret = TAKE_PTR(pk); | |
4648 | ||
4649 | return 0; | |
4650 | #else | |
4651 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "openssl is not supported, cannot parse private key."); | |
4652 | #endif | |
4653 | } | |
4654 | ||
e594a3b1 LP |
4655 | static int partition_acquire_uuid(Context *context, Partition *p, sd_id128_t *ret) { |
4656 | struct { | |
4657 | sd_id128_t type_uuid; | |
4658 | uint64_t counter; | |
695cfd53 | 4659 | } _packed_ plaintext = {}; |
e594a3b1 | 4660 | union { |
ade99252 | 4661 | uint8_t md[SHA256_DIGEST_SIZE]; |
e594a3b1 LP |
4662 | sd_id128_t id; |
4663 | } result; | |
4664 | ||
4665 | uint64_t k = 0; | |
e594a3b1 LP |
4666 | int r; |
4667 | ||
4668 | assert(context); | |
4669 | assert(p); | |
4670 | assert(ret); | |
4671 | ||
4672 | /* Calculate a good UUID for the indicated partition. We want a certain degree of reproducibility, | |
4673 | * hence we won't generate the UUIDs randomly. Instead we use a cryptographic hash (precisely: | |
4674 | * HMAC-SHA256) to derive them from a single seed. The seed is generally the machine ID of the | |
4675 | * installation we are processing, but if random behaviour is desired can be random, too. We use the | |
4676 | * seed value as key for the HMAC (since the machine ID is something we generally don't want to leak) | |
4677 | * and the partition type as plaintext. The partition type is suffixed with a counter (only for the | |
4678 | * second and later partition of the same type) if we have more than one partition of the same | |
4679 | * time. Or in other words: | |
4680 | * | |
4681 | * With: | |
4682 | * SEED := /etc/machine-id | |
4683 | * | |
4684 | * If first partition instance of type TYPE_UUID: | |
4685 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID) | |
4686 | * | |
4687 | * For all later partition instances of type TYPE_UUID with INSTANCE being the LE64 encoded instance number: | |
4688 | * PARTITION_UUID := HMAC-SHA256(SEED, TYPE_UUID || INSTANCE) | |
4689 | */ | |
4690 | ||
4691 | LIST_FOREACH(partitions, q, context->partitions) { | |
4692 | if (p == q) | |
4693 | break; | |
4694 | ||
22e932f4 | 4695 | if (!sd_id128_equal(p->type.uuid, q->type.uuid)) |
e594a3b1 LP |
4696 | continue; |
4697 | ||
4698 | k++; | |
4699 | } | |
4700 | ||
22e932f4 | 4701 | plaintext.type_uuid = p->type.uuid; |
e594a3b1 LP |
4702 | plaintext.counter = htole64(k); |
4703 | ||
ade99252 KK |
4704 | hmac_sha256(context->seed.bytes, sizeof(context->seed.bytes), |
4705 | &plaintext, | |
4706 | k == 0 ? sizeof(sd_id128_t) : sizeof(plaintext), | |
4707 | result.md); | |
e594a3b1 LP |
4708 | |
4709 | /* Take the first half, mark it as v4 UUID */ | |
4710 | assert_cc(sizeof(result.md) == sizeof(result.id) * 2); | |
4711 | result.id = id128_make_v4_uuid(result.id); | |
4712 | ||
4713 | /* Ensure this partition UUID is actually unique, and there's no remaining partition from an earlier run? */ | |
4714 | LIST_FOREACH(partitions, q, context->partitions) { | |
4715 | if (p == q) | |
4716 | continue; | |
4717 | ||
580f48cc | 4718 | if (sd_id128_in_set(result.id, q->current_uuid, q->new_uuid)) { |
da1af43d | 4719 | log_warning("Partition UUID calculated from seed for partition %" PRIu64 " already used, reverting to randomized UUID.", p->partno); |
e594a3b1 LP |
4720 | |
4721 | r = sd_id128_randomize(&result.id); | |
4722 | if (r < 0) | |
4723 | return log_error_errno(r, "Failed to generate randomized UUID: %m"); | |
4724 | ||
4725 | break; | |
4726 | } | |
4727 | } | |
4728 | ||
4729 | *ret = result.id; | |
4730 | return 0; | |
4731 | } | |
4732 | ||
4733 | static int partition_acquire_label(Context *context, Partition *p, char **ret) { | |
4734 | _cleanup_free_ char *label = NULL; | |
4735 | const char *prefix; | |
4736 | unsigned k = 1; | |
4737 | ||
4738 | assert(context); | |
4739 | assert(p); | |
4740 | assert(ret); | |
4741 | ||
22e932f4 | 4742 | prefix = gpt_partition_type_uuid_to_string(p->type.uuid); |
e594a3b1 LP |
4743 | if (!prefix) |
4744 | prefix = "linux"; | |
4745 | ||
4746 | for (;;) { | |
4747 | const char *ll = label ?: prefix; | |
4748 | bool retry = false; | |
e594a3b1 LP |
4749 | |
4750 | LIST_FOREACH(partitions, q, context->partitions) { | |
4751 | if (p == q) | |
4752 | break; | |
4753 | ||
4754 | if (streq_ptr(ll, q->current_label) || | |
4755 | streq_ptr(ll, q->new_label)) { | |
4756 | retry = true; | |
4757 | break; | |
4758 | } | |
4759 | } | |
4760 | ||
4761 | if (!retry) | |
4762 | break; | |
4763 | ||
4764 | label = mfree(label); | |
e594a3b1 LP |
4765 | if (asprintf(&label, "%s-%u", prefix, ++k) < 0) |
4766 | return log_oom(); | |
4767 | } | |
4768 | ||
4769 | if (!label) { | |
4770 | label = strdup(prefix); | |
4771 | if (!label) | |
4772 | return log_oom(); | |
4773 | } | |
4774 | ||
4775 | *ret = TAKE_PTR(label); | |
4776 | return 0; | |
4777 | } | |
4778 | ||
4779 | static int context_acquire_partition_uuids_and_labels(Context *context) { | |
e594a3b1 LP |
4780 | int r; |
4781 | ||
4782 | assert(context); | |
4783 | ||
4784 | LIST_FOREACH(partitions, p, context->partitions) { | |
15cad3a2 DDM |
4785 | sd_id128_t uuid; |
4786 | ||
e594a3b1 LP |
4787 | /* Never touch foreign partitions */ |
4788 | if (PARTITION_IS_FOREIGN(p)) { | |
4789 | p->new_uuid = p->current_uuid; | |
4790 | ||
4791 | if (p->current_label) { | |
78eee6ce LP |
4792 | r = free_and_strdup_warn(&p->new_label, strempty(p->current_label)); |
4793 | if (r < 0) | |
4794 | return r; | |
e594a3b1 LP |
4795 | } |
4796 | ||
4797 | continue; | |
4798 | } | |
4799 | ||
4800 | if (!sd_id128_is_null(p->current_uuid)) | |
15cad3a2 DDM |
4801 | p->new_uuid = uuid = p->current_uuid; /* Never change initialized UUIDs */ |
4802 | else if (p->new_uuid_is_set) | |
4803 | uuid = p->new_uuid; | |
4804 | else { | |
12963533 | 4805 | /* Not explicitly set by user! */ |
15cad3a2 | 4806 | r = partition_acquire_uuid(context, p, &uuid); |
e594a3b1 LP |
4807 | if (r < 0) |
4808 | return r; | |
11749b61 | 4809 | |
15cad3a2 DDM |
4810 | /* The final verity hash/data UUIDs can only be determined after formatting the |
4811 | * verity hash partition. However, we still want to use the generated partition UUID | |
4812 | * to derive other UUIDs to keep things unique and reproducible, so we always | |
4813 | * generate a UUID if none is set, but we only use it as the actual partition UUID if | |
4814 | * verity is not configured. */ | |
4815 | if (!IN_SET(p->verity, VERITY_DATA, VERITY_HASH)) { | |
4816 | p->new_uuid = uuid; | |
4817 | p->new_uuid_is_set = true; | |
4818 | } | |
e594a3b1 LP |
4819 | } |
4820 | ||
8bbbdfd7 DDM |
4821 | /* Calculate the UUID for the file system as HMAC-SHA256 of the string "file-system-uuid", |
4822 | * keyed off the partition UUID. */ | |
15cad3a2 | 4823 | r = derive_uuid(uuid, "file-system-uuid", &p->fs_uuid); |
8bbbdfd7 DDM |
4824 | if (r < 0) |
4825 | return r; | |
4826 | ||
15cad3a2 DDM |
4827 | if (p->encrypt != ENCRYPT_OFF) { |
4828 | r = derive_uuid(uuid, "luks-uuid", &p->luks_uuid); | |
4829 | if (r < 0) | |
4830 | return r; | |
4831 | } | |
4832 | ||
e594a3b1 | 4833 | if (!isempty(p->current_label)) { |
78eee6ce LP |
4834 | /* never change initialized labels */ |
4835 | r = free_and_strdup_warn(&p->new_label, p->current_label); | |
4836 | if (r < 0) | |
4837 | return r; | |
12963533 TH |
4838 | } else if (!p->new_label) { |
4839 | /* Not explicitly set by user! */ | |
4840 | ||
e594a3b1 LP |
4841 | r = partition_acquire_label(context, p, &p->new_label); |
4842 | if (r < 0) | |
4843 | return r; | |
4844 | } | |
4845 | } | |
4846 | ||
4847 | return 0; | |
4848 | } | |
4849 | ||
e73309c5 LP |
4850 | static int set_gpt_flags(struct fdisk_partition *q, uint64_t flags) { |
4851 | _cleanup_free_ char *a = NULL; | |
4852 | ||
4853 | for (unsigned i = 0; i < sizeof(flags) * 8; i++) { | |
4854 | uint64_t bit = UINT64_C(1) << i; | |
4855 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
4856 | ||
4857 | if (!FLAGS_SET(flags, bit)) | |
4858 | continue; | |
4859 | ||
4860 | xsprintf(buf, "%u", i); | |
4861 | if (!strextend_with_separator(&a, ",", buf)) | |
4862 | return -ENOMEM; | |
4863 | } | |
4864 | ||
4865 | return fdisk_partition_set_attrs(q, a); | |
4866 | } | |
4867 | ||
1c41c1dc LP |
4868 | static uint64_t partition_merge_flags(Partition *p) { |
4869 | uint64_t f; | |
4870 | ||
4871 | assert(p); | |
4872 | ||
4873 | f = p->gpt_flags; | |
4874 | ||
ff0771bf | 4875 | if (p->no_auto >= 0) { |
22e932f4 | 4876 | if (gpt_partition_type_knows_no_auto(p->type)) |
92e72028 | 4877 | SET_FLAG(f, SD_GPT_FLAG_NO_AUTO, p->no_auto); |
ff0771bf | 4878 | else { |
b7416360 | 4879 | char buffer[SD_ID128_UUID_STRING_MAX]; |
ff0771bf LP |
4880 | log_warning("Configured NoAuto=%s for partition type '%s' that doesn't support it, ignoring.", |
4881 | yes_no(p->no_auto), | |
22e932f4 | 4882 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
ff0771bf LP |
4883 | } |
4884 | } | |
4885 | ||
1c41c1dc | 4886 | if (p->read_only >= 0) { |
22e932f4 | 4887 | if (gpt_partition_type_knows_read_only(p->type)) |
92e72028 | 4888 | SET_FLAG(f, SD_GPT_FLAG_READ_ONLY, p->read_only); |
1c41c1dc | 4889 | else { |
b7416360 | 4890 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4891 | log_warning("Configured ReadOnly=%s for partition type '%s' that doesn't support it, ignoring.", |
4892 | yes_no(p->read_only), | |
22e932f4 | 4893 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4894 | } |
4895 | } | |
4896 | ||
4897 | if (p->growfs >= 0) { | |
22e932f4 | 4898 | if (gpt_partition_type_knows_growfs(p->type)) |
92e72028 | 4899 | SET_FLAG(f, SD_GPT_FLAG_GROWFS, p->growfs); |
1c41c1dc | 4900 | else { |
b7416360 | 4901 | char buffer[SD_ID128_UUID_STRING_MAX]; |
1c41c1dc LP |
4902 | log_warning("Configured GrowFileSystem=%s for partition type '%s' that doesn't support it, ignoring.", |
4903 | yes_no(p->growfs), | |
22e932f4 | 4904 | gpt_partition_type_uuid_to_string_harder(p->type.uuid, buffer)); |
1c41c1dc LP |
4905 | } |
4906 | } | |
4907 | ||
4908 | return f; | |
4909 | } | |
4910 | ||
f28d4f42 | 4911 | static int context_mangle_partitions(Context *context) { |
f28d4f42 | 4912 | int r; |
e594a3b1 LP |
4913 | |
4914 | assert(context); | |
4915 | ||
e594a3b1 LP |
4916 | LIST_FOREACH(partitions, p, context->partitions) { |
4917 | if (p->dropped) | |
4918 | continue; | |
4919 | ||
821d0cf0 | 4920 | if (partition_type_defer(p->type)) |
81d1098b DDM |
4921 | continue; |
4922 | ||
e594a3b1 LP |
4923 | assert(p->new_size != UINT64_MAX); |
4924 | assert(p->offset != UINT64_MAX); | |
4925 | assert(p->partno != UINT64_MAX); | |
4926 | ||
4927 | if (PARTITION_EXISTS(p)) { | |
4928 | bool changed = false; | |
4929 | ||
4930 | assert(p->current_partition); | |
4931 | ||
4932 | if (p->new_size != p->current_size) { | |
4933 | assert(p->new_size >= p->current_size); | |
994b3031 | 4934 | assert(p->new_size % context->sector_size == 0); |
e594a3b1 LP |
4935 | |
4936 | r = fdisk_partition_size_explicit(p->current_partition, true); | |
4937 | if (r < 0) | |
4938 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
4939 | ||
994b3031 | 4940 | r = fdisk_partition_set_size(p->current_partition, p->new_size / context->sector_size); |
e594a3b1 LP |
4941 | if (r < 0) |
4942 | return log_error_errno(r, "Failed to grow partition: %m"); | |
4943 | ||
4944 | log_info("Growing existing partition %" PRIu64 ".", p->partno); | |
4945 | changed = true; | |
4946 | } | |
4947 | ||
4948 | if (!sd_id128_equal(p->new_uuid, p->current_uuid)) { | |
b7416360 | 4949 | r = fdisk_partition_set_uuid(p->current_partition, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
4950 | if (r < 0) |
4951 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
4952 | ||
4953 | log_info("Initializing UUID of existing partition %" PRIu64 ".", p->partno); | |
4954 | changed = true; | |
4955 | } | |
4956 | ||
4957 | if (!streq_ptr(p->new_label, p->current_label)) { | |
be9ce018 | 4958 | r = fdisk_partition_set_name(p->current_partition, strempty(p->new_label)); |
e594a3b1 LP |
4959 | if (r < 0) |
4960 | return log_error_errno(r, "Failed to set partition label: %m"); | |
4961 | ||
4962 | log_info("Setting partition label of existing partition %" PRIu64 ".", p->partno); | |
4963 | changed = true; | |
4964 | } | |
4965 | ||
4966 | if (changed) { | |
4967 | assert(!PARTITION_IS_FOREIGN(p)); /* never touch foreign partitions */ | |
4968 | ||
4969 | r = fdisk_set_partition(context->fdisk_context, p->partno, p->current_partition); | |
4970 | if (r < 0) | |
4971 | return log_error_errno(r, "Failed to update partition: %m"); | |
4972 | } | |
4973 | } else { | |
4974 | _cleanup_(fdisk_unref_partitionp) struct fdisk_partition *q = NULL; | |
4975 | _cleanup_(fdisk_unref_parttypep) struct fdisk_parttype *t = NULL; | |
e594a3b1 LP |
4976 | |
4977 | assert(!p->new_partition); | |
994b3031 LP |
4978 | assert(p->offset % context->sector_size == 0); |
4979 | assert(p->new_size % context->sector_size == 0); | |
be9ce018 | 4980 | assert(p->new_label); |
e594a3b1 LP |
4981 | |
4982 | t = fdisk_new_parttype(); | |
4983 | if (!t) | |
4984 | return log_oom(); | |
4985 | ||
22e932f4 | 4986 | r = fdisk_parttype_set_typestr(t, SD_ID128_TO_UUID_STRING(p->type.uuid)); |
e594a3b1 LP |
4987 | if (r < 0) |
4988 | return log_error_errno(r, "Failed to initialize partition type: %m"); | |
4989 | ||
4990 | q = fdisk_new_partition(); | |
4991 | if (!q) | |
4992 | return log_oom(); | |
4993 | ||
4994 | r = fdisk_partition_set_type(q, t); | |
4995 | if (r < 0) | |
4996 | return log_error_errno(r, "Failed to set partition type: %m"); | |
4997 | ||
4998 | r = fdisk_partition_size_explicit(q, true); | |
4999 | if (r < 0) | |
5000 | return log_error_errno(r, "Failed to enable explicit sizing: %m"); | |
5001 | ||
994b3031 | 5002 | r = fdisk_partition_set_start(q, p->offset / context->sector_size); |
e594a3b1 LP |
5003 | if (r < 0) |
5004 | return log_error_errno(r, "Failed to position partition: %m"); | |
5005 | ||
994b3031 | 5006 | r = fdisk_partition_set_size(q, p->new_size / context->sector_size); |
e594a3b1 LP |
5007 | if (r < 0) |
5008 | return log_error_errno(r, "Failed to grow partition: %m"); | |
5009 | ||
5010 | r = fdisk_partition_set_partno(q, p->partno); | |
5011 | if (r < 0) | |
5012 | return log_error_errno(r, "Failed to set partition number: %m"); | |
5013 | ||
b7416360 | 5014 | r = fdisk_partition_set_uuid(q, SD_ID128_TO_UUID_STRING(p->new_uuid)); |
e594a3b1 LP |
5015 | if (r < 0) |
5016 | return log_error_errno(r, "Failed to set partition UUID: %m"); | |
5017 | ||
be9ce018 | 5018 | r = fdisk_partition_set_name(q, strempty(p->new_label)); |
e594a3b1 LP |
5019 | if (r < 0) |
5020 | return log_error_errno(r, "Failed to set partition label: %m"); | |
5021 | ||
ff0771bf | 5022 | /* Merge the no auto + read only + growfs setting with the literal flags, and set them for the partition */ |
1c41c1dc | 5023 | r = set_gpt_flags(q, partition_merge_flags(p)); |
e73309c5 LP |
5024 | if (r < 0) |
5025 | return log_error_errno(r, "Failed to set GPT partition flags: %m"); | |
5026 | ||
5b5109e2 | 5027 | log_info("Adding new partition %" PRIu64 " to partition table.", p->partno); |
e594a3b1 LP |
5028 | |
5029 | r = fdisk_add_partition(context->fdisk_context, q, NULL); | |
5030 | if (r < 0) | |
5031 | return log_error_errno(r, "Failed to add partition: %m"); | |
5032 | ||
5033 | assert(!p->new_partition); | |
5034 | p->new_partition = TAKE_PTR(q); | |
5035 | } | |
5036 | } | |
5037 | ||
f28d4f42 LP |
5038 | return 0; |
5039 | } | |
5040 | ||
62108348 | 5041 | static int split_name_printf(Partition *p, char **ret) { |
4cee8333 DDM |
5042 | assert(p); |
5043 | ||
5044 | const Specifier table[] = { | |
22e932f4 DDM |
5045 | { 't', specifier_string, GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(p->type.uuid) }, |
5046 | { 'T', specifier_id128, &p->type.uuid }, | |
4cee8333 DDM |
5047 | { 'U', specifier_id128, &p->new_uuid }, |
5048 | { 'n', specifier_uint64, &p->partno }, | |
5049 | ||
5050 | COMMON_SYSTEM_SPECIFIERS, | |
5051 | {} | |
5052 | }; | |
5053 | ||
62108348 | 5054 | return specifier_printf(p->split_name_format, NAME_MAX, table, arg_root, p, ret); |
4cee8333 DDM |
5055 | } |
5056 | ||
62108348 DDM |
5057 | static int split_node(const char *node, char **ret_base, char **ret_ext) { |
5058 | _cleanup_free_ char *base = NULL, *ext = NULL; | |
5059 | char *e; | |
5060 | int r; | |
5061 | ||
5062 | assert(node); | |
5063 | assert(ret_base); | |
5064 | assert(ret_ext); | |
5065 | ||
5066 | r = path_extract_filename(node, &base); | |
5067 | if (r == O_DIRECTORY || r == -EADDRNOTAVAIL) | |
5068 | return log_error_errno(r, "Device node %s cannot be a directory", node); | |
5069 | if (r < 0) | |
5070 | return log_error_errno(r, "Failed to extract filename from %s: %m", node); | |
5071 | ||
5072 | e = endswith(base, ".raw"); | |
5073 | if (e) { | |
5074 | ext = strdup(e); | |
5075 | if (!ext) | |
5076 | return log_oom(); | |
5077 | ||
5078 | *e = 0; | |
5079 | } | |
5080 | ||
5081 | *ret_base = TAKE_PTR(base); | |
5082 | *ret_ext = TAKE_PTR(ext); | |
5083 | ||
5084 | return 0; | |
4cee8333 DDM |
5085 | } |
5086 | ||
5087 | static int split_name_resolve(Context *context) { | |
62108348 | 5088 | _cleanup_free_ char *parent = NULL, *base = NULL, *ext = NULL; |
4cee8333 DDM |
5089 | int r; |
5090 | ||
62108348 | 5091 | assert(context); |
62108348 | 5092 | |
cc751c75 | 5093 | r = path_extract_directory(context->node, &parent); |
62108348 | 5094 | if (r < 0 && r != -EDESTADDRREQ) |
cc751c75 | 5095 | return log_error_errno(r, "Failed to extract directory from %s: %m", context->node); |
62108348 | 5096 | |
cc751c75 | 5097 | r = split_node(context->node, &base, &ext); |
62108348 DDM |
5098 | if (r < 0) |
5099 | return r; | |
5100 | ||
4cee8333 | 5101 | LIST_FOREACH(partitions, p, context->partitions) { |
62108348 DDM |
5102 | _cleanup_free_ char *resolved = NULL; |
5103 | ||
4cee8333 DDM |
5104 | if (p->dropped) |
5105 | continue; | |
5106 | ||
5107 | if (!p->split_name_format) | |
5108 | continue; | |
5109 | ||
62108348 | 5110 | r = split_name_printf(p, &resolved); |
4cee8333 DDM |
5111 | if (r < 0) |
5112 | return log_error_errno(r, "Failed to resolve specifiers in %s: %m", p->split_name_format); | |
62108348 DDM |
5113 | |
5114 | if (parent) | |
5115 | p->split_path = strjoin(parent, "/", base, ".", resolved, ext); | |
5116 | else | |
5117 | p->split_path = strjoin(base, ".", resolved, ext); | |
5118 | if (!p->split_path) | |
5119 | return log_oom(); | |
4cee8333 DDM |
5120 | } |
5121 | ||
5122 | LIST_FOREACH(partitions, p, context->partitions) { | |
62108348 | 5123 | if (!p->split_path) |
4cee8333 DDM |
5124 | continue; |
5125 | ||
5126 | LIST_FOREACH(partitions, q, context->partitions) { | |
5127 | if (p == q) | |
5128 | continue; | |
5129 | ||
62108348 | 5130 | if (!q->split_path) |
4cee8333 DDM |
5131 | continue; |
5132 | ||
62108348 | 5133 | if (!streq(p->split_path, q->split_path)) |
4cee8333 DDM |
5134 | continue; |
5135 | ||
5136 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
5137 | "%s and %s have the same resolved split name \"%s\", refusing", | |
62108348 | 5138 | p->definition_path, q->definition_path, p->split_path); |
4cee8333 DDM |
5139 | } |
5140 | } | |
5141 | ||
5142 | return 0; | |
5143 | } | |
5144 | ||
4cee8333 | 5145 | static int context_split(Context *context) { |
254d1313 | 5146 | int fd = -EBADF, r; |
4cee8333 DDM |
5147 | |
5148 | if (!arg_split) | |
5149 | return 0; | |
5150 | ||
5151 | assert(context); | |
4cee8333 DDM |
5152 | |
5153 | /* We can't do resolution earlier because the partition UUIDs for verity partitions are only filled | |
5154 | * in after they've been generated. */ | |
5155 | ||
5156 | r = split_name_resolve(context); | |
5157 | if (r < 0) | |
5158 | return r; | |
5159 | ||
4cee8333 | 5160 | LIST_FOREACH(partitions, p, context->partitions) { |
254d1313 | 5161 | _cleanup_close_ int fdt = -EBADF; |
4cee8333 DDM |
5162 | |
5163 | if (p->dropped) | |
5164 | continue; | |
5165 | ||
62108348 | 5166 | if (!p->split_path) |
4cee8333 DDM |
5167 | continue; |
5168 | ||
821d0cf0 | 5169 | if (partition_type_defer(p->type)) |
81d1098b DDM |
5170 | continue; |
5171 | ||
62108348 | 5172 | fdt = open(p->split_path, O_WRONLY|O_NOCTTY|O_CLOEXEC|O_NOFOLLOW|O_CREAT|O_EXCL, 0666); |
4cee8333 | 5173 | if (fdt < 0) |
62108348 | 5174 | return log_error_errno(fdt, "Failed to open split partition file %s: %m", p->split_path); |
4cee8333 DDM |
5175 | |
5176 | if (fd < 0) | |
5177 | assert_se((fd = fdisk_get_devfd(context->fdisk_context)) >= 0); | |
5178 | ||
5179 | if (lseek(fd, p->offset, SEEK_SET) < 0) | |
5180 | return log_error_errno(errno, "Failed to seek to partition offset: %m"); | |
5181 | ||
ab645e0a | 5182 | r = copy_bytes(fd, fdt, p->new_size, COPY_REFLINK|COPY_HOLES|COPY_TRUNCATE); |
4cee8333 | 5183 | if (r < 0) |
62108348 | 5184 | return log_error_errno(r, "Failed to copy to split partition %s: %m", p->split_path); |
4cee8333 DDM |
5185 | } |
5186 | ||
5187 | return 0; | |
5188 | } | |
5189 | ||
cc751c75 | 5190 | static int context_write_partition_table(Context *context) { |
f28d4f42 LP |
5191 | _cleanup_(fdisk_unref_tablep) struct fdisk_table *original_table = NULL; |
5192 | int capable, r; | |
5193 | ||
5194 | assert(context); | |
5195 | ||
cc751c75 | 5196 | if (!context->from_scratch && !context_changed(context)) { |
f28d4f42 LP |
5197 | log_info("No changes."); |
5198 | return 0; | |
5199 | } | |
5200 | ||
5201 | if (arg_dry_run) { | |
5202 | log_notice("Refusing to repartition, please re-run with --dry-run=no."); | |
5203 | return 0; | |
5204 | } | |
5205 | ||
5206 | log_info("Applying changes."); | |
5207 | ||
cc751c75 | 5208 | if (context->from_scratch) { |
81873a6b LP |
5209 | r = context_wipe_range(context, 0, context->total); |
5210 | if (r < 0) | |
5211 | return r; | |
5212 | ||
5213 | log_info("Wiped block device."); | |
5214 | ||
0dce448b LB |
5215 | if (arg_discard) { |
5216 | r = context_discard_range(context, 0, context->total); | |
5217 | if (r == -EOPNOTSUPP) | |
5218 | log_info("Storage does not support discard, not discarding entire block device data."); | |
5219 | else if (r < 0) | |
5220 | return log_error_errno(r, "Failed to discard entire block device: %m"); | |
5221 | else if (r > 0) | |
5222 | log_info("Discarded entire block device."); | |
5223 | } | |
f28d4f42 LP |
5224 | } |
5225 | ||
5226 | r = fdisk_get_partitions(context->fdisk_context, &original_table); | |
5227 | if (r < 0) | |
5228 | return log_error_errno(r, "Failed to acquire partition table: %m"); | |
5229 | ||
5230 | /* Wipe fs signatures and discard sectors where the new partitions are going to be placed and in the | |
5231 | * gaps between partitions, just to be sure. */ | |
cc751c75 | 5232 | r = context_wipe_and_discard(context); |
f28d4f42 LP |
5233 | if (r < 0) |
5234 | return r; | |
5235 | ||
5236 | r = context_copy_blocks(context); | |
5237 | if (r < 0) | |
5238 | return r; | |
5239 | ||
5240 | r = context_mkfs(context); | |
5241 | if (r < 0) | |
5242 | return r; | |
5243 | ||
5244 | r = context_mangle_partitions(context); | |
5245 | if (r < 0) | |
5246 | return r; | |
5247 | ||
e594a3b1 LP |
5248 | log_info("Writing new partition table."); |
5249 | ||
5250 | r = fdisk_write_disklabel(context->fdisk_context); | |
5251 | if (r < 0) | |
5252 | return log_error_errno(r, "Failed to write partition table: %m"); | |
5253 | ||
911ba624 | 5254 | capable = blockdev_partscan_enabled(fdisk_get_devfd(context->fdisk_context)); |
9a1deb85 LP |
5255 | if (capable == -ENOTBLK) |
5256 | log_debug("Not telling kernel to reread partition table, since we are not operating on a block device."); | |
5257 | else if (capable < 0) | |
911ba624 | 5258 | return log_error_errno(capable, "Failed to check if block device supports partition scanning: %m"); |
9a1deb85 | 5259 | else if (capable > 0) { |
e594a3b1 LP |
5260 | log_info("Telling kernel to reread partition table."); |
5261 | ||
cc751c75 | 5262 | if (context->from_scratch) |
e594a3b1 LP |
5263 | r = fdisk_reread_partition_table(context->fdisk_context); |
5264 | else | |
5265 | r = fdisk_reread_changes(context->fdisk_context, original_table); | |
5266 | if (r < 0) | |
5267 | return log_error_errno(r, "Failed to reread partition table: %m"); | |
5268 | } else | |
5269 | log_notice("Not telling kernel to reread partition table, because selected image does not support kernel partition block devices."); | |
5270 | ||
5271 | log_info("All done."); | |
5272 | ||
5273 | return 0; | |
5274 | } | |
5275 | ||
5276 | static int context_read_seed(Context *context, const char *root) { | |
5277 | int r; | |
5278 | ||
5279 | assert(context); | |
5280 | ||
5281 | if (!sd_id128_is_null(context->seed)) | |
5282 | return 0; | |
5283 | ||
5284 | if (!arg_randomize) { | |
5ee37b70 YW |
5285 | r = id128_get_machine(root, &context->seed); |
5286 | if (r >= 0) | |
5287 | return 0; | |
e594a3b1 | 5288 | |
5ee37b70 YW |
5289 | if (!ERRNO_IS_MACHINE_ID_UNSET(r)) |
5290 | return log_error_errno(r, "Failed to parse machine ID of image: %m"); | |
74e795ee | 5291 | |
5ee37b70 | 5292 | log_info("No machine ID set, using randomized partition UUIDs."); |
e594a3b1 LP |
5293 | } |
5294 | ||
5295 | r = sd_id128_randomize(&context->seed); | |
5296 | if (r < 0) | |
5297 | return log_error_errno(r, "Failed to generate randomized seed: %m"); | |
5298 | ||
5299 | return 0; | |
5300 | } | |
5301 | ||
cc751c75 | 5302 | static int context_factory_reset(Context *context) { |
e594a3b1 LP |
5303 | size_t n = 0; |
5304 | int r; | |
5305 | ||
5306 | assert(context); | |
5307 | ||
5308 | if (arg_factory_reset <= 0) | |
5309 | return 0; | |
5310 | ||
cc751c75 | 5311 | if (context->from_scratch) /* Nothing to reset if we start from scratch */ |
e594a3b1 LP |
5312 | return 0; |
5313 | ||
5314 | if (arg_dry_run) { | |
5315 | log_notice("Refusing to factory reset, please re-run with --dry-run=no."); | |
5316 | return 0; | |
5317 | } | |
5318 | ||
5319 | log_info("Applying factory reset."); | |
5320 | ||
5321 | LIST_FOREACH(partitions, p, context->partitions) { | |
5322 | ||
5323 | if (!p->factory_reset || !PARTITION_EXISTS(p)) | |
5324 | continue; | |
5325 | ||
5326 | assert(p->partno != UINT64_MAX); | |
5327 | ||
5328 | log_info("Removing partition %" PRIu64 " for factory reset.", p->partno); | |
5329 | ||
5330 | r = fdisk_delete_partition(context->fdisk_context, p->partno); | |
5331 | if (r < 0) | |
5332 | return log_error_errno(r, "Failed to remove partition %" PRIu64 ": %m", p->partno); | |
5333 | ||
5334 | n++; | |
5335 | } | |
5336 | ||
5337 | if (n == 0) { | |
5338 | log_info("Factory reset requested, but no partitions to delete found."); | |
5339 | return 0; | |
5340 | } | |
5341 | ||
5342 | r = fdisk_write_disklabel(context->fdisk_context); | |
5343 | if (r < 0) | |
5344 | return log_error_errno(r, "Failed to write disk label: %m"); | |
5345 | ||
5346 | log_info("Successfully deleted %zu partitions.", n); | |
5347 | return 1; | |
5348 | } | |
5349 | ||
5350 | static int context_can_factory_reset(Context *context) { | |
e594a3b1 LP |
5351 | assert(context); |
5352 | ||
5353 | LIST_FOREACH(partitions, p, context->partitions) | |
5354 | if (p->factory_reset && PARTITION_EXISTS(p)) | |
5355 | return true; | |
5356 | ||
5357 | return false; | |
5358 | } | |
5359 | ||
5c08da58 LP |
5360 | static int resolve_copy_blocks_auto_candidate( |
5361 | dev_t partition_devno, | |
22e932f4 | 5362 | GptPartitionType partition_type, |
5c08da58 LP |
5363 | dev_t restrict_devno, |
5364 | sd_id128_t *ret_uuid) { | |
5365 | ||
5366 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; | |
254d1313 | 5367 | _cleanup_close_ int fd = -EBADF; |
ca822829 YW |
5368 | _cleanup_free_ char *p = NULL; |
5369 | const char *pttype, *t; | |
5c08da58 LP |
5370 | sd_id128_t pt_parsed, u; |
5371 | blkid_partition pp; | |
5372 | dev_t whole_devno; | |
5373 | blkid_partlist pl; | |
5c08da58 LP |
5374 | int r; |
5375 | ||
5376 | /* Checks if the specified partition has the specified GPT type UUID, and is located on the specified | |
5377 | * 'restrict_devno' device. The type check is particularly relevant if we have Verity volume which is | |
5378 | * backed by two separate partitions: the data and the hash partitions, and we need to find the right | |
5379 | * one of the two. */ | |
5380 | ||
5381 | r = block_get_whole_disk(partition_devno, &whole_devno); | |
5382 | if (r < 0) | |
5383 | return log_error_errno( | |
5384 | r, | |
5385 | "Unable to determine containing block device of partition %u:%u: %m", | |
5386 | major(partition_devno), minor(partition_devno)); | |
5387 | ||
5388 | if (restrict_devno != (dev_t) -1 && | |
5389 | restrict_devno != whole_devno) | |
5390 | return log_error_errno( | |
5391 | SYNTHETIC_ERRNO(EPERM), | |
5392 | "Partition %u:%u is located outside of block device %u:%u, refusing.", | |
5393 | major(partition_devno), minor(partition_devno), | |
5394 | major(restrict_devno), minor(restrict_devno)); | |
5395 | ||
ca822829 | 5396 | fd = r = device_open_from_devnum(S_IFBLK, whole_devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &p); |
5c08da58 | 5397 | if (r < 0) |
ca822829 YW |
5398 | return log_error_errno(r, "Failed to open block device " DEVNUM_FORMAT_STR ": %m", |
5399 | DEVNUM_FORMAT_VAL(whole_devno)); | |
5c08da58 LP |
5400 | |
5401 | b = blkid_new_probe(); | |
5402 | if (!b) | |
5403 | return log_oom(); | |
5404 | ||
5405 | errno = 0; | |
5406 | r = blkid_probe_set_device(b, fd, 0, 0); | |
5407 | if (r != 0) | |
5408 | return log_error_errno(errno_or_else(ENOMEM), "Failed to open block device '%s': %m", p); | |
5409 | ||
5410 | (void) blkid_probe_enable_partitions(b, 1); | |
5411 | (void) blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
5412 | ||
5413 | errno = 0; | |
5414 | r = blkid_do_safeprobe(b); | |
2e3944b8 LP |
5415 | if (r == _BLKID_SAFEPROBE_ERROR) |
5416 | return log_error_errno(errno_or_else(EIO), "Unable to probe for partition table of '%s': %m", p); | |
5417 | if (IN_SET(r, _BLKID_SAFEPROBE_AMBIGUOUS, _BLKID_SAFEPROBE_NOT_FOUND)) { | |
5c08da58 LP |
5418 | log_debug("Didn't find partition table on block device '%s'.", p); |
5419 | return false; | |
5420 | } | |
2e3944b8 LP |
5421 | |
5422 | assert(r == _BLKID_SAFEPROBE_FOUND); | |
5c08da58 LP |
5423 | |
5424 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
5425 | if (!streq_ptr(pttype, "gpt")) { | |
5426 | log_debug("Didn't find a GPT partition table on '%s'.", p); | |
5427 | return false; | |
5428 | } | |
5429 | ||
5430 | errno = 0; | |
5431 | pl = blkid_probe_get_partitions(b); | |
5432 | if (!pl) | |
5433 | return log_error_errno(errno_or_else(EIO), "Unable read partition table of '%s': %m", p); | |
5c08da58 LP |
5434 | |
5435 | pp = blkid_partlist_devno_to_partition(pl, partition_devno); | |
5436 | if (!pp) { | |
5437 | log_debug("Partition %u:%u has no matching partition table entry on '%s'.", | |
5438 | major(partition_devno), minor(partition_devno), p); | |
5439 | return false; | |
5440 | } | |
5441 | ||
5442 | t = blkid_partition_get_type_string(pp); | |
5443 | if (isempty(t)) { | |
5444 | log_debug("Partition %u:%u has no type on '%s'.", | |
5445 | major(partition_devno), minor(partition_devno), p); | |
5446 | return false; | |
5447 | } | |
5448 | ||
5449 | r = sd_id128_from_string(t, &pt_parsed); | |
5450 | if (r < 0) { | |
5451 | log_debug_errno(r, "Failed to parse partition type \"%s\": %m", t); | |
5452 | return false; | |
5453 | } | |
5454 | ||
22e932f4 | 5455 | if (!sd_id128_equal(pt_parsed, partition_type.uuid)) { |
5c08da58 LP |
5456 | log_debug("Partition %u:%u has non-matching partition type " SD_ID128_FORMAT_STR " (needed: " SD_ID128_FORMAT_STR "), ignoring.", |
5457 | major(partition_devno), minor(partition_devno), | |
22e932f4 | 5458 | SD_ID128_FORMAT_VAL(pt_parsed), SD_ID128_FORMAT_VAL(partition_type.uuid)); |
5c08da58 LP |
5459 | return false; |
5460 | } | |
5461 | ||
e3b9a5ff LP |
5462 | r = blkid_partition_get_uuid_id128(pp, &u); |
5463 | if (r == -ENXIO) { | |
5464 | log_debug_errno(r, "Partition " DEVNUM_FORMAT_STR " has no UUID.", DEVNUM_FORMAT_VAL(partition_devno)); | |
5c08da58 LP |
5465 | return false; |
5466 | } | |
5c08da58 | 5467 | if (r < 0) { |
e3b9a5ff | 5468 | log_debug_errno(r, "Failed to read partition UUID of " DEVNUM_FORMAT_STR ": %m", DEVNUM_FORMAT_VAL(partition_devno)); |
5c08da58 LP |
5469 | return false; |
5470 | } | |
5471 | ||
e3b9a5ff LP |
5472 | log_debug("Automatically found partition " DEVNUM_FORMAT_STR " of right type " SD_ID128_FORMAT_STR ".", |
5473 | DEVNUM_FORMAT_VAL(partition_devno), | |
5c08da58 LP |
5474 | SD_ID128_FORMAT_VAL(pt_parsed)); |
5475 | ||
5476 | if (ret_uuid) | |
5477 | *ret_uuid = u; | |
5478 | ||
5479 | return true; | |
5480 | } | |
5481 | ||
5482 | static int find_backing_devno( | |
5483 | const char *path, | |
5484 | const char *root, | |
5485 | dev_t *ret) { | |
5486 | ||
5487 | _cleanup_free_ char *resolved = NULL; | |
5488 | int r; | |
5489 | ||
5490 | assert(path); | |
5491 | ||
f461a28d | 5492 | r = chase(path, root, CHASE_PREFIX_ROOT, &resolved, NULL); |
5c08da58 LP |
5493 | if (r < 0) |
5494 | return r; | |
5495 | ||
5496 | r = path_is_mount_point(resolved, NULL, 0); | |
5497 | if (r < 0) | |
5498 | return r; | |
5499 | if (r == 0) /* Not a mount point, then it's not a partition of its own, let's not automatically use it. */ | |
5500 | return -ENOENT; | |
5501 | ||
5502 | r = get_block_device(resolved, ret); | |
5503 | if (r < 0) | |
5504 | return r; | |
5505 | if (r == 0) /* Not backed by physical file system, we can't use this */ | |
5506 | return -ENOENT; | |
5507 | ||
5508 | return 0; | |
5509 | } | |
5510 | ||
5511 | static int resolve_copy_blocks_auto( | |
22e932f4 | 5512 | GptPartitionType type, |
5c08da58 LP |
5513 | const char *root, |
5514 | dev_t restrict_devno, | |
1a037ba2 | 5515 | dev_t *ret_devno, |
5c08da58 LP |
5516 | sd_id128_t *ret_uuid) { |
5517 | ||
5518 | const char *try1 = NULL, *try2 = NULL; | |
5519 | char p[SYS_BLOCK_PATH_MAX("/slaves")]; | |
5d2a48da | 5520 | _cleanup_closedir_ DIR *d = NULL; |
5c08da58 LP |
5521 | sd_id128_t found_uuid = SD_ID128_NULL; |
5522 | dev_t devno, found = 0; | |
5523 | int r; | |
5524 | ||
86320e62 DDM |
5525 | /* Enforce some security restrictions: CopyBlocks=auto should not be an avenue to get outside of the |
5526 | * --root=/--image= confinement. Specifically, refuse CopyBlocks= in combination with --root= at all, | |
5527 | * and restrict block device references in the --image= case to loopback block device we set up. | |
5528 | * | |
5529 | * restrict_devno contain the dev_t of the loop back device we operate on in case of --image=, and | |
5530 | * thus declares which device (and its partition subdevices) we shall limit access to. If | |
5531 | * restrict_devno is zero no device probing access shall be allowed at all (used for --root=) and if | |
5532 | * it is (dev_t) -1 then free access shall be allowed (if neither switch is used). */ | |
5533 | ||
5534 | if (restrict_devno == 0) | |
5535 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5536 | "Automatic discovery of backing block devices not permitted in --root= mode, refusing."); | |
5537 | ||
5c08da58 LP |
5538 | /* Handles CopyBlocks=auto, and finds the right source partition to copy from. We look for matching |
5539 | * partitions in the host, using the appropriate directory as key and ensuring that the partition | |
5540 | * type matches. */ | |
5541 | ||
22e932f4 | 5542 | if (type.designator == PARTITION_ROOT) |
5c08da58 | 5543 | try1 = "/"; |
22e932f4 | 5544 | else if (type.designator == PARTITION_USR) |
5c08da58 | 5545 | try1 = "/usr/"; |
22e932f4 | 5546 | else if (type.designator == PARTITION_ROOT_VERITY) |
5c08da58 | 5547 | try1 = "/"; |
22e932f4 | 5548 | else if (type.designator == PARTITION_USR_VERITY) |
5c08da58 | 5549 | try1 = "/usr/"; |
22e932f4 | 5550 | else if (type.designator == PARTITION_ESP) { |
5c08da58 LP |
5551 | try1 = "/efi/"; |
5552 | try2 = "/boot/"; | |
22e932f4 | 5553 | } else if (type.designator == PARTITION_XBOOTLDR) |
5c08da58 LP |
5554 | try1 = "/boot/"; |
5555 | else | |
5556 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
5557 | "Partition type " SD_ID128_FORMAT_STR " not supported from automatic source block device discovery.", | |
22e932f4 | 5558 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5559 | |
5560 | r = find_backing_devno(try1, root, &devno); | |
5561 | if (r == -ENOENT && try2) | |
5562 | r = find_backing_devno(try2, root, &devno); | |
5563 | if (r < 0) | |
5564 | return log_error_errno(r, "Failed to resolve automatic CopyBlocks= path for partition type " SD_ID128_FORMAT_STR ", sorry: %m", | |
22e932f4 | 5565 | SD_ID128_FORMAT_VAL(type.uuid)); |
5c08da58 LP |
5566 | |
5567 | xsprintf_sys_block_path(p, "/slaves", devno); | |
5568 | d = opendir(p); | |
5569 | if (d) { | |
5570 | struct dirent *de; | |
5571 | ||
5572 | for (;;) { | |
5573 | _cleanup_free_ char *q = NULL, *t = NULL; | |
5574 | sd_id128_t u; | |
5575 | dev_t sl; | |
5576 | ||
5577 | errno = 0; | |
5578 | de = readdir_no_dot(d); | |
5579 | if (!de) { | |
5580 | if (errno != 0) | |
5581 | return log_error_errno(errno, "Failed to read directory '%s': %m", p); | |
5582 | ||
5583 | break; | |
5584 | } | |
5585 | ||
5586 | if (!IN_SET(de->d_type, DT_LNK, DT_UNKNOWN)) | |
5587 | continue; | |
5588 | ||
5589 | q = path_join(p, de->d_name, "/dev"); | |
5590 | if (!q) | |
5591 | return log_oom(); | |
5592 | ||
5593 | r = read_one_line_file(q, &t); | |
5594 | if (r < 0) | |
5595 | return log_error_errno(r, "Failed to read %s: %m", q); | |
5596 | ||
7176f06c | 5597 | r = parse_devnum(t, &sl); |
5c08da58 LP |
5598 | if (r < 0) { |
5599 | log_debug_errno(r, "Failed to parse %s, ignoring: %m", q); | |
5600 | continue; | |
5601 | } | |
5602 | if (major(sl) == 0) { | |
375ffdba | 5603 | log_debug("Device backing %s is special, ignoring.", q); |
5c08da58 LP |
5604 | continue; |
5605 | } | |
5606 | ||
22e932f4 | 5607 | r = resolve_copy_blocks_auto_candidate(sl, type, restrict_devno, &u); |
5c08da58 LP |
5608 | if (r < 0) |
5609 | return r; | |
5610 | if (r > 0) { | |
5611 | /* We found a matching one! */ | |
5612 | if (found != 0) | |
5613 | return log_error_errno(SYNTHETIC_ERRNO(ENOTUNIQ), | |
5614 | "Multiple matching partitions found, refusing."); | |
5615 | ||
5616 | found = sl; | |
5617 | found_uuid = u; | |
5618 | } | |
5619 | } | |
5620 | } else if (errno != ENOENT) | |
5621 | return log_error_errno(errno, "Failed open %s: %m", p); | |
5622 | else { | |
22e932f4 | 5623 | r = resolve_copy_blocks_auto_candidate(devno, type, restrict_devno, &found_uuid); |
5c08da58 LP |
5624 | if (r < 0) |
5625 | return r; | |
5626 | if (r > 0) | |
5627 | found = devno; | |
5628 | } | |
5629 | ||
86320e62 DDM |
5630 | if (found == 0) |
5631 | return log_error_errno(SYNTHETIC_ERRNO(ENXIO), | |
5632 | "Unable to automatically discover suitable partition to copy blocks from."); | |
5633 | ||
1a037ba2 YW |
5634 | if (ret_devno) |
5635 | *ret_devno = found; | |
5c08da58 LP |
5636 | |
5637 | if (ret_uuid) | |
5638 | *ret_uuid = found_uuid; | |
5639 | ||
86320e62 | 5640 | return 0; |
5c08da58 LP |
5641 | } |
5642 | ||
5643 | static int context_open_copy_block_paths( | |
5644 | Context *context, | |
5c08da58 LP |
5645 | dev_t restrict_devno) { |
5646 | ||
757bc2e4 LP |
5647 | int r; |
5648 | ||
5649 | assert(context); | |
5650 | ||
5651 | LIST_FOREACH(partitions, p, context->partitions) { | |
254d1313 | 5652 | _cleanup_close_ int source_fd = -EBADF; |
5c08da58 LP |
5653 | _cleanup_free_ char *opened = NULL; |
5654 | sd_id128_t uuid = SD_ID128_NULL; | |
757bc2e4 LP |
5655 | uint64_t size; |
5656 | struct stat st; | |
5657 | ||
5eef7047 DDM |
5658 | if (p->copy_blocks_fd >= 0) |
5659 | continue; | |
5660 | ||
757bc2e4 LP |
5661 | assert(p->copy_blocks_size == UINT64_MAX); |
5662 | ||
5663 | if (PARTITION_EXISTS(p)) /* Never copy over partitions that already exist! */ | |
5664 | continue; | |
5665 | ||
5c08da58 | 5666 | if (p->copy_blocks_path) { |
757bc2e4 | 5667 | |
f461a28d | 5668 | source_fd = chase_and_open(p->copy_blocks_path, p->copy_blocks_root, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
5c08da58 LP |
5669 | if (source_fd < 0) |
5670 | return log_error_errno(source_fd, "Failed to open '%s': %m", p->copy_blocks_path); | |
757bc2e4 | 5671 | |
5c08da58 LP |
5672 | if (fstat(source_fd, &st) < 0) |
5673 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
5674 | ||
5675 | if (!S_ISREG(st.st_mode) && restrict_devno != (dev_t) -1) | |
5676 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
5677 | "Copying from block device node is not permitted in --image=/--root= mode, refusing."); | |
5678 | ||
5679 | } else if (p->copy_blocks_auto) { | |
03f5e501 | 5680 | dev_t devno = 0; /* Fake initialization to appease gcc. */ |
5c08da58 | 5681 | |
22e932f4 | 5682 | r = resolve_copy_blocks_auto(p->type, p->copy_blocks_root, restrict_devno, &devno, &uuid); |
5c08da58 LP |
5683 | if (r < 0) |
5684 | return r; | |
03f5e501 | 5685 | assert(devno != 0); |
5c08da58 | 5686 | |
ca822829 | 5687 | source_fd = r = device_open_from_devnum(S_IFBLK, devno, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &opened); |
1a037ba2 | 5688 | if (r < 0) |
ca822829 YW |
5689 | return log_error_errno(r, "Failed to open automatically determined source block copy device " DEVNUM_FORMAT_STR ": %m", |
5690 | DEVNUM_FORMAT_VAL(devno)); | |
5c08da58 LP |
5691 | |
5692 | if (fstat(source_fd, &st) < 0) | |
5693 | return log_error_errno(errno, "Failed to stat block copy file '%s': %m", opened); | |
1a037ba2 | 5694 | } else |
5c08da58 | 5695 | continue; |
757bc2e4 LP |
5696 | |
5697 | if (S_ISDIR(st.st_mode)) { | |
ca822829 YW |
5698 | _cleanup_free_ char *bdev = NULL; |
5699 | dev_t devt; | |
757bc2e4 LP |
5700 | |
5701 | /* If the file is a directory, automatically find the backing block device */ | |
5702 | ||
5703 | if (major(st.st_dev) != 0) | |
ca822829 | 5704 | devt = st.st_dev; |
757bc2e4 | 5705 | else { |
757bc2e4 | 5706 | /* Special support for btrfs */ |
757bc2e4 | 5707 | r = btrfs_get_block_device_fd(source_fd, &devt); |
67f0ac8c | 5708 | if (r == -EUCLEAN) |
5c08da58 | 5709 | return btrfs_log_dev_root(LOG_ERR, r, opened); |
757bc2e4 | 5710 | if (r < 0) |
5c08da58 | 5711 | return log_error_errno(r, "Unable to determine backing block device of '%s': %m", opened); |
757bc2e4 | 5712 | } |
757bc2e4 LP |
5713 | |
5714 | safe_close(source_fd); | |
5715 | ||
ca822829 YW |
5716 | source_fd = r = device_open_from_devnum(S_IFBLK, devt, O_RDONLY|O_CLOEXEC|O_NONBLOCK, &bdev); |
5717 | if (r < 0) | |
5718 | return log_error_errno(r, "Failed to open block device backing '%s': %m", opened); | |
757bc2e4 LP |
5719 | |
5720 | if (fstat(source_fd, &st) < 0) | |
5721 | return log_error_errno(errno, "Failed to stat block device '%s': %m", bdev); | |
757bc2e4 LP |
5722 | } |
5723 | ||
5724 | if (S_ISREG(st.st_mode)) | |
5725 | size = st.st_size; | |
5726 | else if (S_ISBLK(st.st_mode)) { | |
5727 | if (ioctl(source_fd, BLKGETSIZE64, &size) != 0) | |
5728 | return log_error_errno(errno, "Failed to determine size of block device to copy from: %m"); | |
5729 | } else | |
5c08da58 | 5730 | 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 |
5731 | |
5732 | if (size <= 0) | |
5c08da58 | 5733 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "File to copy bytes from '%s' has zero size, refusing.", opened); |
757bc2e4 | 5734 | if (size % 512 != 0) |
5c08da58 | 5735 | 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 |
5736 | |
5737 | p->copy_blocks_fd = TAKE_FD(source_fd); | |
5738 | p->copy_blocks_size = size; | |
5c08da58 LP |
5739 | |
5740 | free_and_replace(p->copy_blocks_path, opened); | |
5741 | ||
5742 | /* When copying from an existing partition copy that partitions UUID if none is configured explicitly */ | |
11749b61 | 5743 | if (!p->new_uuid_is_set && !sd_id128_is_null(uuid)) { |
5c08da58 | 5744 | p->new_uuid = uuid; |
11749b61 DDM |
5745 | p->new_uuid_is_set = true; |
5746 | } | |
757bc2e4 LP |
5747 | } |
5748 | ||
5749 | return 0; | |
5750 | } | |
5751 | ||
c4a87b76 DDM |
5752 | static int fd_apparent_size(int fd, uint64_t *ret) { |
5753 | off_t initial = 0; | |
5754 | uint64_t size = 0; | |
5755 | ||
5756 | assert(fd >= 0); | |
5757 | assert(ret); | |
5758 | ||
5759 | initial = lseek(fd, 0, SEEK_CUR); | |
5760 | if (initial < 0) | |
5761 | return log_error_errno(errno, "Failed to get file offset: %m"); | |
5762 | ||
5763 | for (off_t off = 0;;) { | |
5764 | off_t r; | |
5765 | ||
5766 | r = lseek(fd, off, SEEK_DATA); | |
5767 | if (r < 0 && errno == ENXIO) | |
5768 | /* If errno == ENXIO, that means we've reached the final hole of the file and | |
5769 | * that hole isn't followed by more data. */ | |
5770 | break; | |
5771 | if (r < 0) | |
5772 | return log_error_errno(errno, "Failed to seek data in file from offset %"PRIi64": %m", off); | |
5773 | ||
5774 | off = r; /* Set the offset to the start of the data segment. */ | |
5775 | ||
5776 | /* After copying a potential hole, find the end of the data segment by looking for | |
5777 | * the next hole. If we get ENXIO, we're at EOF. */ | |
5778 | r = lseek(fd, off, SEEK_HOLE); | |
5779 | if (r < 0) { | |
5780 | if (errno == ENXIO) | |
5781 | break; | |
5782 | return log_error_errno(errno, "Failed to seek hole in file from offset %"PRIi64": %m", off); | |
5783 | } | |
5784 | ||
5785 | size += r - off; | |
5786 | off = r; | |
5787 | } | |
5788 | ||
5789 | if (lseek(fd, initial, SEEK_SET) < 0) | |
5790 | return log_error_errno(errno, "Failed to reset file offset: %m"); | |
5791 | ||
5792 | *ret = size; | |
5793 | ||
5794 | return 0; | |
5795 | } | |
5796 | ||
5797 | static int context_minimize(Context *context) { | |
c264ec5f | 5798 | const char *vt = NULL; |
c4a87b76 DDM |
5799 | int r; |
5800 | ||
5801 | assert(context); | |
5802 | ||
c4a87b76 | 5803 | LIST_FOREACH(partitions, p, context->partitions) { |
e59678b2 | 5804 | _cleanup_(rm_rf_physical_and_freep) char *root = NULL; |
c4a87b76 | 5805 | _cleanup_(unlink_and_freep) char *temp = NULL; |
d3201eb4 | 5806 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; |
4b8ce14f | 5807 | _cleanup_strv_free_ char **extra_mkfs_options = NULL; |
254d1313 | 5808 | _cleanup_close_ int fd = -EBADF; |
b24bfd6e | 5809 | _cleanup_free_ char *hint = NULL; |
c4a87b76 DDM |
5810 | sd_id128_t fs_uuid; |
5811 | uint64_t fsz; | |
5812 | ||
5813 | if (p->dropped) | |
5814 | continue; | |
5815 | ||
5816 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
5817 | continue; | |
5818 | ||
5819 | if (!p->format) | |
5820 | continue; | |
5821 | ||
dea0dc7b DDM |
5822 | if (p->copy_blocks_fd >= 0) |
5823 | continue; | |
5824 | ||
5c33b686 | 5825 | if (p->minimize == MINIMIZE_OFF) |
c4a87b76 DDM |
5826 | continue; |
5827 | ||
d3201eb4 DDM |
5828 | if (!partition_needs_populate(p)) |
5829 | continue; | |
5830 | ||
c4a87b76 DDM |
5831 | assert(!p->copy_blocks_path); |
5832 | ||
b24bfd6e DDM |
5833 | (void) partition_hint(p, context->node, &hint); |
5834 | ||
5835 | log_info("Pre-populating %s filesystem of partition %s twice to calculate minimal partition size", | |
5836 | p->format, strna(hint)); | |
5837 | ||
c264ec5f ZJS |
5838 | if (!vt) { |
5839 | r = var_tmp_dir(&vt); | |
5840 | if (r < 0) | |
5841 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
5842 | } | |
5843 | ||
c4a87b76 DDM |
5844 | r = tempfn_random_child(vt, "repart", &temp); |
5845 | if (r < 0) | |
5846 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
5847 | ||
59e2be46 DDM |
5848 | if (fstype_is_ro(p->format)) |
5849 | fs_uuid = p->fs_uuid; | |
5850 | else { | |
c4a87b76 DDM |
5851 | fd = open(temp, O_CREAT|O_EXCL|O_CLOEXEC|O_RDWR|O_NOCTTY, 0600); |
5852 | if (fd < 0) | |
5853 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
5854 | ||
5855 | /* This may seem huge but it will be created sparse so it doesn't take up any space | |
d3201eb4 | 5856 | * on disk until written to. */ |
c4a87b76 DDM |
5857 | if (ftruncate(fd, 1024ULL * 1024ULL * 1024ULL * 1024ULL) < 0) |
5858 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", | |
5859 | FORMAT_BYTES(1024ULL * 1024ULL * 1024ULL * 1024ULL)); | |
5860 | ||
e30c6e91 | 5861 | if (arg_offline <= 0) { |
66a8c74c | 5862 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, context->sector_size, 0, LOCK_EX, &d); |
e30c6e91 DDM |
5863 | if (r < 0 && (arg_offline == 0 || (r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)))) |
5864 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5865 | } | |
d3201eb4 | 5866 | |
c4a87b76 DDM |
5867 | /* We're going to populate this filesystem twice so use a random UUID the first time |
5868 | * to avoid UUID conflicts. */ | |
5869 | r = sd_id128_randomize(&fs_uuid); | |
5870 | if (r < 0) | |
5871 | return r; | |
59e2be46 DDM |
5872 | } |
5873 | ||
d3201eb4 DDM |
5874 | if (!d || fstype_is_ro(p->format)) { |
5875 | if (!mkfs_supports_root_option(p->format)) | |
5876 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), | |
5877 | "Loop device access is required to populate %s filesystems", | |
5878 | p->format); | |
5879 | ||
e57b7020 | 5880 | r = partition_populate_directory(context, p, &root); |
c4a87b76 DDM |
5881 | if (r < 0) |
5882 | return r; | |
c4a87b76 DDM |
5883 | } |
5884 | ||
4b8ce14f DDM |
5885 | r = mkfs_options_from_env("REPART", p->format, &extra_mkfs_options); |
5886 | if (r < 0) | |
5887 | return log_error_errno(r, | |
5888 | "Failed to determine mkfs command line options for '%s': %m", | |
5889 | p->format); | |
5890 | ||
e1878ef7 | 5891 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, fs_uuid, |
2bc161dd | 5892 | arg_discard, /* quiet = */ false, context->sector_size, extra_mkfs_options); |
c4a87b76 DDM |
5893 | if (r < 0) |
5894 | return r; | |
5895 | ||
5896 | /* Read-only filesystems are minimal from the first try because they create and size the | |
5897 | * loopback file for us. */ | |
5898 | if (fstype_is_ro(p->format)) { | |
b24bfd6e DDM |
5899 | struct stat st; |
5900 | ||
dea0dc7b | 5901 | assert(fd < 0); |
2843df3e | 5902 | |
dea0dc7b DDM |
5903 | fd = open(temp, O_RDONLY|O_CLOEXEC|O_NONBLOCK); |
5904 | if (fd < 0) | |
5905 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
5906 | ||
5907 | if (fstat(fd, &st) < 0) | |
b24bfd6e DDM |
5908 | return log_error_errno(errno, "Failed to stat temporary file: %m"); |
5909 | ||
5910 | log_info("Minimal partition size of %s filesystem of partition %s is %s", | |
5911 | p->format, strna(hint), FORMAT_BYTES(st.st_size)); | |
5912 | ||
c4a87b76 | 5913 | p->copy_blocks_path = TAKE_PTR(temp); |
7d07030e | 5914 | p->copy_blocks_path_is_our_file = true; |
2843df3e DDM |
5915 | p->copy_blocks_fd = TAKE_FD(fd); |
5916 | p->copy_blocks_size = st.st_size; | |
c4a87b76 DDM |
5917 | continue; |
5918 | } | |
5919 | ||
d3201eb4 DDM |
5920 | if (!root) { |
5921 | assert(d); | |
5922 | ||
e57b7020 | 5923 | r = partition_populate_filesystem(context, p, d->node); |
59e2be46 DDM |
5924 | if (r < 0) |
5925 | return r; | |
5926 | } | |
c4a87b76 DDM |
5927 | |
5928 | /* Other filesystems need to be provided with a pre-sized loopback file and will adapt to | |
5929 | * fully occupy it. Because we gave the filesystem a 1T sparse file, we need to shrink the | |
5930 | * filesystem down to a reasonable size again to fit it in the disk image. While there are | |
5931 | * some filesystems that support shrinking, it doesn't always work properly (e.g. shrinking | |
5932 | * btrfs gives us a 2.0G filesystem regardless of what we put in it). Instead, let's populate | |
5933 | * the filesystem again, but this time, instead of providing the filesystem with a 1T sparse | |
5934 | * loopback file, let's size the loopback file based on the actual data used by the | |
5935 | * filesystem in the sparse file after the first attempt. This should be a good guess of the | |
5936 | * minimal amount of space needed in the filesystem to fit all the required data. | |
5937 | */ | |
5938 | r = fd_apparent_size(fd, &fsz); | |
5939 | if (r < 0) | |
5940 | return r; | |
5941 | ||
5942 | /* Massage the size a bit because just going by actual data used in the sparse file isn't | |
5943 | * fool-proof. */ | |
5944 | fsz = round_up_size(fsz + (fsz / 2), context->grain_size); | |
5945 | if (minimal_size_by_fs_name(p->format) != UINT64_MAX) | |
5946 | fsz = MAX(minimal_size_by_fs_name(p->format), fsz); | |
5947 | ||
b24bfd6e DDM |
5948 | log_info("Minimal partition size of %s filesystem of partition %s is %s", |
5949 | p->format, strna(hint), FORMAT_BYTES(fsz)); | |
5950 | ||
d3201eb4 DDM |
5951 | d = loop_device_unref(d); |
5952 | ||
c4a87b76 DDM |
5953 | /* Erase the previous filesystem first. */ |
5954 | if (ftruncate(fd, 0)) | |
5955 | return log_error_errno(errno, "Failed to erase temporary file: %m"); | |
5956 | ||
5957 | if (ftruncate(fd, fsz)) | |
5958 | return log_error_errno(errno, "Failed to truncate temporary file to %s: %m", FORMAT_BYTES(fsz)); | |
5959 | ||
e30c6e91 | 5960 | if (arg_offline <= 0) { |
66a8c74c | 5961 | r = loop_device_make(fd, O_RDWR, 0, UINT64_MAX, context->sector_size, 0, LOCK_EX, &d); |
e30c6e91 DDM |
5962 | if (r < 0 && (arg_offline == 0 || (r != -ENOENT && !ERRNO_IS_PRIVILEGE(r)))) |
5963 | return log_error_errno(r, "Failed to make loopback device of %s: %m", temp); | |
5964 | } | |
d3201eb4 | 5965 | |
e1878ef7 | 5966 | r = make_filesystem(d ? d->node : temp, p->format, strempty(p->new_label), root, p->fs_uuid, |
2bc161dd | 5967 | arg_discard, /* quiet = */ false, context->sector_size, extra_mkfs_options); |
c4a87b76 DDM |
5968 | if (r < 0) |
5969 | return r; | |
5970 | ||
d3201eb4 DDM |
5971 | if (!root) { |
5972 | assert(d); | |
5973 | ||
e57b7020 | 5974 | r = partition_populate_filesystem(context, p, d->node); |
59e2be46 DDM |
5975 | if (r < 0) |
5976 | return r; | |
5977 | } | |
c4a87b76 | 5978 | |
dea0dc7b DDM |
5979 | assert(fd >= 0); |
5980 | ||
c4a87b76 | 5981 | p->copy_blocks_path = TAKE_PTR(temp); |
7d07030e | 5982 | p->copy_blocks_path_is_our_file = true; |
2843df3e DDM |
5983 | p->copy_blocks_fd = TAKE_FD(fd); |
5984 | p->copy_blocks_size = fsz; | |
c4a87b76 DDM |
5985 | } |
5986 | ||
5eef7047 DDM |
5987 | /* Now that we've done the data partitions, do the verity hash partitions. We do these in a separate |
5988 | * step because they might depend on data generated in the previous step. */ | |
5989 | ||
5990 | LIST_FOREACH(partitions, p, context->partitions) { | |
5991 | _cleanup_(unlink_and_freep) char *temp = NULL; | |
5992 | _cleanup_free_ char *hint = NULL; | |
2843df3e | 5993 | _cleanup_close_ int fd = -EBADF; |
5eef7047 DDM |
5994 | struct stat st; |
5995 | Partition *dp; | |
5996 | ||
5997 | if (p->dropped) | |
5998 | continue; | |
5999 | ||
6000 | if (PARTITION_EXISTS(p)) /* Never format existing partitions */ | |
6001 | continue; | |
6002 | ||
6003 | if (p->minimize == MINIMIZE_OFF) | |
6004 | continue; | |
6005 | ||
6006 | if (p->verity != VERITY_HASH) | |
6007 | continue; | |
6008 | ||
6009 | assert_se(dp = p->siblings[VERITY_DATA]); | |
6010 | assert(!dp->dropped); | |
6011 | assert(dp->copy_blocks_path); | |
6012 | ||
6013 | (void) partition_hint(p, context->node, &hint); | |
6014 | ||
6015 | log_info("Pre-populating verity hash data of partition %s to calculate minimal partition size", | |
6016 | strna(hint)); | |
6017 | ||
c264ec5f ZJS |
6018 | if (!vt) { |
6019 | r = var_tmp_dir(&vt); | |
6020 | if (r < 0) | |
6021 | return log_error_errno(r, "Could not determine temporary directory: %m"); | |
6022 | } | |
6023 | ||
5eef7047 DDM |
6024 | r = tempfn_random_child(vt, "repart", &temp); |
6025 | if (r < 0) | |
6026 | return log_error_errno(r, "Failed to generate temporary file path: %m"); | |
6027 | ||
6028 | r = touch(temp); | |
6029 | if (r < 0) | |
6030 | return log_error_errno(r, "Failed to create temporary file: %m"); | |
6031 | ||
6032 | r = partition_format_verity_hash(context, p, temp, dp->copy_blocks_path); | |
6033 | if (r < 0) | |
6034 | return r; | |
6035 | ||
2843df3e DDM |
6036 | fd = open(temp, O_RDONLY|O_CLOEXEC|O_NONBLOCK); |
6037 | if (fd < 0) | |
6038 | return log_error_errno(errno, "Failed to open temporary file %s: %m", temp); | |
6039 | ||
6040 | if (fstat(fd, &st) < 0) | |
5eef7047 DDM |
6041 | return log_error_errno(r, "Failed to stat temporary file: %m"); |
6042 | ||
6043 | log_info("Minimal partition size of verity hash partition %s is %s", | |
6044 | strna(hint), FORMAT_BYTES(st.st_size)); | |
6045 | ||
6046 | p->copy_blocks_path = TAKE_PTR(temp); | |
6047 | p->copy_blocks_path_is_our_file = true; | |
2843df3e DDM |
6048 | p->copy_blocks_fd = TAKE_FD(fd); |
6049 | p->copy_blocks_size = st.st_size; | |
5eef7047 DDM |
6050 | } |
6051 | ||
c4a87b76 DDM |
6052 | return 0; |
6053 | } | |
6054 | ||
9786dfe6 | 6055 | static int parse_partition_types(const char *p, GptPartitionType **partitions, size_t *n_partitions) { |
81d1098b DDM |
6056 | int r; |
6057 | ||
220780db DDM |
6058 | assert(partitions); |
6059 | assert(n_partitions); | |
6060 | ||
81d1098b DDM |
6061 | for (;;) { |
6062 | _cleanup_free_ char *name = NULL; | |
6063 | GptPartitionType type; | |
6064 | ||
6065 | r = extract_first_word(&p, &name, ",", EXTRACT_CUNESCAPE|EXTRACT_DONT_COALESCE_SEPARATORS); | |
6066 | if (r == 0) | |
6067 | break; | |
6068 | if (r < 0) | |
766f52f2 | 6069 | return log_error_errno(r, "Failed to extract partition type identifier or GUID: %s", p); |
81d1098b DDM |
6070 | |
6071 | r = gpt_partition_type_from_string(name, &type); | |
6072 | if (r < 0) | |
766f52f2 | 6073 | return log_error_errno(r, "'%s' is not a valid partition type identifier or GUID", name); |
81d1098b | 6074 | |
220780db | 6075 | if (!GREEDY_REALLOC(*partitions, *n_partitions + 1)) |
81d1098b DDM |
6076 | return log_oom(); |
6077 | ||
9786dfe6 | 6078 | (*partitions)[(*n_partitions)++] = type; |
81d1098b DDM |
6079 | } |
6080 | ||
6081 | return 0; | |
6082 | } | |
6083 | ||
e594a3b1 LP |
6084 | static int help(void) { |
6085 | _cleanup_free_ char *link = NULL; | |
6086 | int r; | |
6087 | ||
6dadf31d | 6088 | r = terminal_urlify_man("systemd-repart", "8", &link); |
e594a3b1 LP |
6089 | if (r < 0) |
6090 | return log_oom(); | |
6091 | ||
6092 | printf("%s [OPTIONS...] [DEVICE]\n" | |
6093 | "\n%sGrow and add partitions to partition table.%s\n\n" | |
6094 | " -h --help Show this help\n" | |
6095 | " --version Show package version\n" | |
896e678b LP |
6096 | " --no-pager Do not pipe output into a pager\n" |
6097 | " --no-legend Do not show the headers and footers\n" | |
e594a3b1 | 6098 | " --dry-run=BOOL Whether to run dry-run operation\n" |
a26f4a49 LP |
6099 | " --empty=MODE One of refuse, allow, require, force, create; controls\n" |
6100 | " how to handle empty disks lacking partition tables\n" | |
e594a3b1 | 6101 | " --discard=BOOL Whether to discard backing blocks for new partitions\n" |
2d2d0a57 | 6102 | " --pretty=BOOL Whether to show pretty summary before doing changes\n" |
e594a3b1 LP |
6103 | " --factory-reset=BOOL Whether to remove data partitions before recreating\n" |
6104 | " them\n" | |
6105 | " --can-factory-reset Test whether factory reset is defined\n" | |
6106 | " --root=PATH Operate relative to root path\n" | |
252d6267 | 6107 | " --image=PATH Operate relative to image file\n" |
84be0c71 LP |
6108 | " --image-policy=POLICY\n" |
6109 | " Specify disk image dissection policy\n" | |
9d252fbb | 6110 | " --definitions=DIR Find partition definitions in specified directory\n" |
b9df3536 | 6111 | " --key-file=PATH Key to use when encrypting partitions\n" |
b456191d DDM |
6112 | " --private-key=PATH Private key to use when generating verity roothash\n" |
6113 | " signatures\n" | |
6114 | " --certificate=PATH PEM certificate to use when generating verity\n" | |
6115 | " roothash signatures\n" | |
889914ef | 6116 | " --tpm2-device=PATH Path to TPM2 device node to use\n" |
a1788a69 | 6117 | " --tpm2-pcrs=PCR1+PCR2+PCR3+…\n" |
889914ef | 6118 | " TPM2 PCR indexes to use for TPM2 enrollment\n" |
02ef97cd LP |
6119 | " --tpm2-public-key=PATH\n" |
6120 | " Enroll signed TPM2 PCR policy against PEM public key\n" | |
6121 | " --tpm2-public-key-pcrs=PCR1+PCR2+PCR3+…\n" | |
6122 | " Enroll signed TPM2 PCR policy for specified TPM2 PCRs\n" | |
da890466 | 6123 | " --seed=UUID 128-bit seed UUID to derive all UUIDs from\n" |
a26f4a49 | 6124 | " --size=BYTES Grow loopback file to specified size\n" |
2d2d0a57 | 6125 | " --json=pretty|short|off\n" |
de8231b0 | 6126 | " Generate JSON output\n" |
4cee8333 | 6127 | " --split=BOOL Whether to generate split artifacts\n" |
81d1098b | 6128 | " --include-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 6129 | " Ignore partitions not of the specified types\n" |
81d1098b | 6130 | " --exclude-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 | 6131 | " Ignore partitions of the specified types\n" |
8275334b | 6132 | " --defer-partitions=PARTITION1,PARTITION2,PARTITION3,…\n" |
7d505753 DDM |
6133 | " Take partitions of the specified types into account\n" |
6134 | " but don't populate them yet\n" | |
e1878ef7 | 6135 | " --sector-size=SIZE Set the logical sector size for the image\n" |
9786dfe6 | 6136 | " --architecture=ARCH Set the generic architecture for the image\n" |
fc10b158 | 6137 | " --offline=BOOL Whether to build the image offline\n" |
1e46985a | 6138 | " --copy-from=IMAGE Copy partitions from the given image\n" |
bc556335 DDM |
6139 | "\nSee the %s for details.\n", |
6140 | program_invocation_short_name, | |
6141 | ansi_highlight(), | |
6142 | ansi_normal(), | |
6143 | link); | |
e594a3b1 LP |
6144 | |
6145 | return 0; | |
6146 | } | |
6147 | ||
6148 | static int parse_argv(int argc, char *argv[]) { | |
6149 | ||
6150 | enum { | |
6151 | ARG_VERSION = 0x100, | |
896e678b LP |
6152 | ARG_NO_PAGER, |
6153 | ARG_NO_LEGEND, | |
e594a3b1 LP |
6154 | ARG_DRY_RUN, |
6155 | ARG_EMPTY, | |
6156 | ARG_DISCARD, | |
6157 | ARG_FACTORY_RESET, | |
6158 | ARG_CAN_FACTORY_RESET, | |
6159 | ARG_ROOT, | |
252d6267 | 6160 | ARG_IMAGE, |
06e78680 | 6161 | ARG_IMAGE_POLICY, |
e594a3b1 LP |
6162 | ARG_SEED, |
6163 | ARG_PRETTY, | |
6164 | ARG_DEFINITIONS, | |
a26f4a49 | 6165 | ARG_SIZE, |
a015fbe7 | 6166 | ARG_JSON, |
b9df3536 | 6167 | ARG_KEY_FILE, |
b456191d DDM |
6168 | ARG_PRIVATE_KEY, |
6169 | ARG_CERTIFICATE, | |
889914ef LP |
6170 | ARG_TPM2_DEVICE, |
6171 | ARG_TPM2_PCRS, | |
02ef97cd LP |
6172 | ARG_TPM2_PUBLIC_KEY, |
6173 | ARG_TPM2_PUBLIC_KEY_PCRS, | |
4cee8333 | 6174 | ARG_SPLIT, |
81d1098b DDM |
6175 | ARG_INCLUDE_PARTITIONS, |
6176 | ARG_EXCLUDE_PARTITIONS, | |
8275334b | 6177 | ARG_DEFER_PARTITIONS, |
e1878ef7 | 6178 | ARG_SECTOR_SIZE, |
84be0c71 | 6179 | ARG_SKIP_PARTITIONS, |
9786dfe6 | 6180 | ARG_ARCHITECTURE, |
fc10b158 | 6181 | ARG_OFFLINE, |
1e46985a | 6182 | ARG_COPY_FROM, |
e594a3b1 LP |
6183 | }; |
6184 | ||
6185 | static const struct option options[] = { | |
02ef97cd LP |
6186 | { "help", no_argument, NULL, 'h' }, |
6187 | { "version", no_argument, NULL, ARG_VERSION }, | |
6188 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
6189 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, | |
6190 | { "dry-run", required_argument, NULL, ARG_DRY_RUN }, | |
6191 | { "empty", required_argument, NULL, ARG_EMPTY }, | |
6192 | { "discard", required_argument, NULL, ARG_DISCARD }, | |
6193 | { "factory-reset", required_argument, NULL, ARG_FACTORY_RESET }, | |
6194 | { "can-factory-reset", no_argument, NULL, ARG_CAN_FACTORY_RESET }, | |
6195 | { "root", required_argument, NULL, ARG_ROOT }, | |
6196 | { "image", required_argument, NULL, ARG_IMAGE }, | |
06e78680 | 6197 | { "image-policy", required_argument, NULL, ARG_IMAGE_POLICY }, |
02ef97cd LP |
6198 | { "seed", required_argument, NULL, ARG_SEED }, |
6199 | { "pretty", required_argument, NULL, ARG_PRETTY }, | |
6200 | { "definitions", required_argument, NULL, ARG_DEFINITIONS }, | |
6201 | { "size", required_argument, NULL, ARG_SIZE }, | |
6202 | { "json", required_argument, NULL, ARG_JSON }, | |
6203 | { "key-file", required_argument, NULL, ARG_KEY_FILE }, | |
b456191d DDM |
6204 | { "private-key", required_argument, NULL, ARG_PRIVATE_KEY }, |
6205 | { "certificate", required_argument, NULL, ARG_CERTIFICATE }, | |
02ef97cd LP |
6206 | { "tpm2-device", required_argument, NULL, ARG_TPM2_DEVICE }, |
6207 | { "tpm2-pcrs", required_argument, NULL, ARG_TPM2_PCRS }, | |
6208 | { "tpm2-public-key", required_argument, NULL, ARG_TPM2_PUBLIC_KEY }, | |
6209 | { "tpm2-public-key-pcrs", required_argument, NULL, ARG_TPM2_PUBLIC_KEY_PCRS }, | |
4cee8333 | 6210 | { "split", required_argument, NULL, ARG_SPLIT }, |
81d1098b DDM |
6211 | { "include-partitions", required_argument, NULL, ARG_INCLUDE_PARTITIONS }, |
6212 | { "exclude-partitions", required_argument, NULL, ARG_EXCLUDE_PARTITIONS }, | |
8275334b | 6213 | { "defer-partitions", required_argument, NULL, ARG_DEFER_PARTITIONS }, |
e1878ef7 | 6214 | { "sector-size", required_argument, NULL, ARG_SECTOR_SIZE }, |
9786dfe6 | 6215 | { "architecture", required_argument, NULL, ARG_ARCHITECTURE }, |
fc10b158 | 6216 | { "offline", required_argument, NULL, ARG_OFFLINE }, |
1e46985a | 6217 | { "copy-from", required_argument, NULL, ARG_COPY_FROM }, |
e594a3b1 LP |
6218 | {} |
6219 | }; | |
6220 | ||
a26f4a49 | 6221 | int c, r, dry_run = -1; |
e594a3b1 LP |
6222 | |
6223 | assert(argc >= 0); | |
6224 | assert(argv); | |
6225 | ||
6226 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
6227 | ||
6228 | switch (c) { | |
6229 | ||
6230 | case 'h': | |
6231 | return help(); | |
6232 | ||
6233 | case ARG_VERSION: | |
6234 | return version(); | |
6235 | ||
896e678b LP |
6236 | case ARG_NO_PAGER: |
6237 | arg_pager_flags |= PAGER_DISABLE; | |
6238 | break; | |
6239 | ||
6240 | case ARG_NO_LEGEND: | |
6241 | arg_legend = false; | |
6242 | break; | |
6243 | ||
e594a3b1 | 6244 | case ARG_DRY_RUN: |
599c7c54 | 6245 | r = parse_boolean_argument("--dry-run=", optarg, &arg_dry_run); |
e594a3b1 | 6246 | if (r < 0) |
599c7c54 | 6247 | return r; |
e594a3b1 LP |
6248 | break; |
6249 | ||
6250 | case ARG_EMPTY: | |
6251 | if (isempty(optarg) || streq(optarg, "refuse")) | |
6252 | arg_empty = EMPTY_REFUSE; | |
6253 | else if (streq(optarg, "allow")) | |
6254 | arg_empty = EMPTY_ALLOW; | |
6255 | else if (streq(optarg, "require")) | |
6256 | arg_empty = EMPTY_REQUIRE; | |
6257 | else if (streq(optarg, "force")) | |
6258 | arg_empty = EMPTY_FORCE; | |
a26f4a49 LP |
6259 | else if (streq(optarg, "create")) { |
6260 | arg_empty = EMPTY_CREATE; | |
6261 | ||
6262 | if (dry_run < 0) | |
6263 | dry_run = false; /* Imply --dry-run=no if we create the loopback file | |
6264 | * anew. After all we cannot really break anyone's | |
6265 | * partition tables that way. */ | |
6266 | } else | |
e594a3b1 LP |
6267 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6268 | "Failed to parse --empty= parameter: %s", optarg); | |
6269 | break; | |
6270 | ||
6271 | case ARG_DISCARD: | |
599c7c54 | 6272 | r = parse_boolean_argument("--discard=", optarg, &arg_discard); |
e594a3b1 | 6273 | if (r < 0) |
599c7c54 | 6274 | return r; |
e594a3b1 LP |
6275 | break; |
6276 | ||
6277 | case ARG_FACTORY_RESET: | |
c3470872 | 6278 | r = parse_boolean_argument("--factory-reset=", optarg, NULL); |
e594a3b1 | 6279 | if (r < 0) |
c3470872 | 6280 | return r; |
e594a3b1 LP |
6281 | arg_factory_reset = r; |
6282 | break; | |
6283 | ||
6284 | case ARG_CAN_FACTORY_RESET: | |
6285 | arg_can_factory_reset = true; | |
6286 | break; | |
6287 | ||
6288 | case ARG_ROOT: | |
252d6267 LP |
6289 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
6290 | if (r < 0) | |
6291 | return r; | |
6292 | break; | |
6293 | ||
6294 | case ARG_IMAGE: | |
6295 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); | |
e594a3b1 LP |
6296 | if (r < 0) |
6297 | return r; | |
6298 | break; | |
6299 | ||
06e78680 YW |
6300 | case ARG_IMAGE_POLICY: |
6301 | r = parse_image_policy_argument(optarg, &arg_image_policy); | |
6302 | if (r < 0) | |
6303 | return r; | |
6304 | break; | |
6305 | ||
e594a3b1 LP |
6306 | case ARG_SEED: |
6307 | if (isempty(optarg)) { | |
6308 | arg_seed = SD_ID128_NULL; | |
6309 | arg_randomize = false; | |
6310 | } else if (streq(optarg, "random")) | |
6311 | arg_randomize = true; | |
6312 | else { | |
6313 | r = sd_id128_from_string(optarg, &arg_seed); | |
6314 | if (r < 0) | |
6315 | return log_error_errno(r, "Failed to parse seed: %s", optarg); | |
6316 | ||
6317 | arg_randomize = false; | |
6318 | } | |
6319 | ||
6320 | break; | |
6321 | ||
6322 | case ARG_PRETTY: | |
c3470872 | 6323 | r = parse_boolean_argument("--pretty=", optarg, NULL); |
e594a3b1 | 6324 | if (r < 0) |
c3470872 | 6325 | return r; |
e594a3b1 LP |
6326 | arg_pretty = r; |
6327 | break; | |
6328 | ||
224c853f RP |
6329 | case ARG_DEFINITIONS: { |
6330 | _cleanup_free_ char *path = NULL; | |
6331 | r = parse_path_argument(optarg, false, &path); | |
e594a3b1 LP |
6332 | if (r < 0) |
6333 | return r; | |
224c853f RP |
6334 | if (strv_consume(&arg_definitions, TAKE_PTR(path)) < 0) |
6335 | return log_oom(); | |
e594a3b1 | 6336 | break; |
224c853f | 6337 | } |
e594a3b1 | 6338 | |
a26f4a49 LP |
6339 | case ARG_SIZE: { |
6340 | uint64_t parsed, rounded; | |
6341 | ||
170c9823 LP |
6342 | if (streq(optarg, "auto")) { |
6343 | arg_size = UINT64_MAX; | |
6344 | arg_size_auto = true; | |
6345 | break; | |
6346 | } | |
6347 | ||
a26f4a49 LP |
6348 | r = parse_size(optarg, 1024, &parsed); |
6349 | if (r < 0) | |
6350 | return log_error_errno(r, "Failed to parse --size= parameter: %s", optarg); | |
6351 | ||
6352 | rounded = round_up_size(parsed, 4096); | |
6353 | if (rounded == 0) | |
6354 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too small, refusing."); | |
6355 | if (rounded == UINT64_MAX) | |
6356 | return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Specified image size too large, refusing."); | |
6357 | ||
6358 | if (rounded != parsed) | |
e2341b6b DT |
6359 | log_warning("Specified size is not a multiple of 4096, rounding up automatically. (%" PRIu64 " %s %" PRIu64 ")", |
6360 | parsed, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), rounded); | |
a26f4a49 LP |
6361 | |
6362 | arg_size = rounded; | |
170c9823 | 6363 | arg_size_auto = false; |
a26f4a49 LP |
6364 | break; |
6365 | } | |
b9df3536 | 6366 | |
a015fbe7 | 6367 | case ARG_JSON: |
b1e8f46c | 6368 | r = parse_json_argument(optarg, &arg_json_format_flags); |
6a01ea4a LP |
6369 | if (r <= 0) |
6370 | return r; | |
a015fbe7 TH |
6371 | |
6372 | break; | |
6373 | ||
b9df3536 LP |
6374 | case ARG_KEY_FILE: { |
6375 | _cleanup_(erase_and_freep) char *k = NULL; | |
6376 | size_t n = 0; | |
6377 | ||
8b3c3a49 | 6378 | r = read_full_file_full( |
986311c2 | 6379 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, |
8b3c3a49 LP |
6380 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, |
6381 | NULL, | |
6382 | &k, &n); | |
b9df3536 LP |
6383 | if (r < 0) |
6384 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
6385 | ||
6386 | erase_and_free(arg_key); | |
6387 | arg_key = TAKE_PTR(k); | |
6388 | arg_key_size = n; | |
6389 | break; | |
6390 | } | |
a26f4a49 | 6391 | |
b456191d DDM |
6392 | case ARG_PRIVATE_KEY: { |
6393 | _cleanup_(erase_and_freep) char *k = NULL; | |
6394 | size_t n = 0; | |
6395 | ||
6396 | r = read_full_file_full( | |
6397 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
6398 | READ_FULL_FILE_SECURE|READ_FULL_FILE_WARN_WORLD_READABLE|READ_FULL_FILE_CONNECT_SOCKET, | |
6399 | NULL, | |
6400 | &k, &n); | |
6401 | if (r < 0) | |
6402 | return log_error_errno(r, "Failed to read key file '%s': %m", optarg); | |
6403 | ||
6404 | EVP_PKEY_free(arg_private_key); | |
6405 | arg_private_key = NULL; | |
6406 | r = parse_private_key(k, n, &arg_private_key); | |
6407 | if (r < 0) | |
6408 | return r; | |
6409 | break; | |
6410 | } | |
6411 | ||
6412 | case ARG_CERTIFICATE: { | |
6413 | _cleanup_free_ char *cert = NULL; | |
6414 | size_t n = 0; | |
6415 | ||
6416 | r = read_full_file_full( | |
6417 | AT_FDCWD, optarg, UINT64_MAX, SIZE_MAX, | |
6418 | READ_FULL_FILE_CONNECT_SOCKET, | |
6419 | NULL, | |
6420 | &cert, &n); | |
6421 | if (r < 0) | |
6422 | return log_error_errno(r, "Failed to read certificate file '%s': %m", optarg); | |
6423 | ||
6424 | X509_free(arg_certificate); | |
6425 | arg_certificate = NULL; | |
6426 | r = parse_x509_certificate(cert, n, &arg_certificate); | |
6427 | if (r < 0) | |
6428 | return r; | |
6429 | break; | |
6430 | } | |
6431 | ||
889914ef LP |
6432 | case ARG_TPM2_DEVICE: { |
6433 | _cleanup_free_ char *device = NULL; | |
6434 | ||
6435 | if (streq(optarg, "list")) | |
6436 | return tpm2_list_devices(); | |
6437 | ||
6438 | if (!streq(optarg, "auto")) { | |
6439 | device = strdup(optarg); | |
6440 | if (!device) | |
6441 | return log_oom(); | |
6442 | } | |
6443 | ||
6444 | free(arg_tpm2_device); | |
6445 | arg_tpm2_device = TAKE_PTR(device); | |
6446 | break; | |
6447 | } | |
6448 | ||
222a951f | 6449 | case ARG_TPM2_PCRS: |
07c04061 | 6450 | r = tpm2_parse_pcr_argument_to_mask(optarg, &arg_tpm2_pcr_mask); |
889914ef LP |
6451 | if (r < 0) |
6452 | return r; | |
6453 | ||
889914ef | 6454 | break; |
889914ef | 6455 | |
02ef97cd LP |
6456 | case ARG_TPM2_PUBLIC_KEY: |
6457 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_tpm2_public_key); | |
6458 | if (r < 0) | |
6459 | return r; | |
6460 | ||
6461 | break; | |
6462 | ||
6463 | case ARG_TPM2_PUBLIC_KEY_PCRS: | |
07c04061 | 6464 | r = tpm2_parse_pcr_argument_to_mask(optarg, &arg_tpm2_public_key_pcr_mask); |
02ef97cd LP |
6465 | if (r < 0) |
6466 | return r; | |
6467 | ||
6468 | break; | |
6469 | ||
4cee8333 DDM |
6470 | case ARG_SPLIT: |
6471 | r = parse_boolean_argument("--split=", optarg, NULL); | |
6472 | if (r < 0) | |
6473 | return r; | |
6474 | ||
6475 | arg_split = r; | |
6476 | break; | |
6477 | ||
81d1098b DDM |
6478 | case ARG_INCLUDE_PARTITIONS: |
6479 | if (arg_filter_partitions_type == FILTER_PARTITIONS_EXCLUDE) | |
6480 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6481 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
6482 | ||
220780db | 6483 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
6484 | if (r < 0) |
6485 | return r; | |
6486 | ||
6487 | arg_filter_partitions_type = FILTER_PARTITIONS_INCLUDE; | |
6488 | ||
6489 | break; | |
6490 | ||
6491 | case ARG_EXCLUDE_PARTITIONS: | |
6492 | if (arg_filter_partitions_type == FILTER_PARTITIONS_INCLUDE) | |
6493 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6494 | "Combination of --include-partitions= and --exclude-partitions= is invalid."); | |
6495 | ||
220780db | 6496 | r = parse_partition_types(optarg, &arg_filter_partitions, &arg_n_filter_partitions); |
81d1098b DDM |
6497 | if (r < 0) |
6498 | return r; | |
6499 | ||
6500 | arg_filter_partitions_type = FILTER_PARTITIONS_EXCLUDE; | |
6501 | ||
6502 | break; | |
6503 | ||
8275334b DDM |
6504 | case ARG_DEFER_PARTITIONS: |
6505 | r = parse_partition_types(optarg, &arg_defer_partitions, &arg_n_defer_partitions); | |
7d505753 DDM |
6506 | if (r < 0) |
6507 | return r; | |
6508 | ||
6509 | break; | |
6510 | ||
e1878ef7 DDM |
6511 | case ARG_SECTOR_SIZE: |
6512 | r = parse_sector_size(optarg, &arg_sector_size); | |
6513 | if (r < 0) | |
6514 | return r; | |
6515 | ||
6516 | break; | |
6517 | ||
9786dfe6 DDM |
6518 | case ARG_ARCHITECTURE: |
6519 | r = architecture_from_string(optarg); | |
6520 | if (r < 0) | |
6521 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid architecture '%s'", optarg); | |
6522 | ||
6523 | arg_architecture = r; | |
6524 | break; | |
6525 | ||
fc10b158 DDM |
6526 | case ARG_OFFLINE: |
6527 | if (streq(optarg, "auto")) | |
6528 | arg_offline = -1; | |
6529 | else { | |
6530 | r = parse_boolean_argument("--offline=", optarg, NULL); | |
6531 | if (r < 0) | |
6532 | return r; | |
6533 | ||
6534 | arg_offline = r; | |
6535 | } | |
6536 | ||
6537 | break; | |
6538 | ||
1e46985a DDM |
6539 | case ARG_COPY_FROM: |
6540 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_copy_from); | |
6541 | if (r < 0) | |
6542 | return r; | |
6543 | break; | |
6544 | ||
e594a3b1 LP |
6545 | case '?': |
6546 | return -EINVAL; | |
6547 | ||
6548 | default: | |
04499a70 | 6549 | assert_not_reached(); |
e594a3b1 LP |
6550 | } |
6551 | ||
6552 | if (argc - optind > 1) | |
6553 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6554 | "Expected at most one argument, the path to the block device."); | |
6555 | ||
a26f4a49 | 6556 | if (arg_factory_reset > 0 && IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE)) |
e594a3b1 | 6557 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
a26f4a49 | 6558 | "Combination of --factory-reset=yes and --empty=force/--empty=require/--empty=create is invalid."); |
e594a3b1 LP |
6559 | |
6560 | if (arg_can_factory_reset) | |
a26f4a49 LP |
6561 | arg_dry_run = true; /* When --can-factory-reset is specified we don't make changes, hence |
6562 | * non-dry-run mode makes no sense. Thus, imply dry run mode so that we | |
6563 | * open things strictly read-only. */ | |
6564 | else if (dry_run >= 0) | |
6565 | arg_dry_run = dry_run; | |
6566 | ||
170c9823 | 6567 | if (arg_empty == EMPTY_CREATE && (arg_size == UINT64_MAX && !arg_size_auto)) |
a26f4a49 LP |
6568 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6569 | "If --empty=create is specified, --size= must be specified, too."); | |
e594a3b1 | 6570 | |
252d6267 LP |
6571 | if (arg_image && arg_root) |
6572 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
6573 | else if (!arg_image && !arg_root && in_initrd()) { | |
8f47e32a LP |
6574 | |
6575 | /* By default operate on /sysusr/ or /sysroot/ when invoked in the initrd. We prefer the | |
6576 | * former, if it is mounted, so that we have deterministic behaviour on systems where /usr/ | |
6577 | * is vendor-supplied but the root fs formatted on first boot. */ | |
6578 | r = path_is_mount_point("/sysusr/usr", NULL, 0); | |
6579 | if (r <= 0) { | |
6580 | if (r < 0 && r != -ENOENT) | |
6581 | log_debug_errno(r, "Unable to determine whether /sysusr/usr is a mount point, assuming it is not: %m"); | |
6582 | ||
6583 | arg_root = strdup("/sysroot"); | |
6584 | } else | |
6585 | arg_root = strdup("/sysusr"); | |
252d6267 LP |
6586 | if (!arg_root) |
6587 | return log_oom(); | |
6588 | } | |
6589 | ||
e594a3b1 | 6590 | arg_node = argc > optind ? argv[optind] : NULL; |
a26f4a49 | 6591 | |
252d6267 | 6592 | if (IN_SET(arg_empty, EMPTY_FORCE, EMPTY_REQUIRE, EMPTY_CREATE) && !arg_node && !arg_image) |
a26f4a49 LP |
6593 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
6594 | "A path to a device node or loopback file must be specified when --empty=force, --empty=require or --empty=create are used."); | |
6595 | ||
4cee8333 DDM |
6596 | if (arg_split && !arg_node) |
6597 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
6598 | "A path to a loopback file must be specified when --split is used."); | |
6599 | ||
889914ef LP |
6600 | if (arg_tpm2_pcr_mask == UINT32_MAX) |
6601 | arg_tpm2_pcr_mask = TPM2_PCR_MASK_DEFAULT; | |
02ef97cd LP |
6602 | if (arg_tpm2_public_key_pcr_mask == UINT32_MAX) |
6603 | arg_tpm2_public_key_pcr_mask = UINT32_C(1) << TPM_PCR_INDEX_KERNEL_IMAGE; | |
889914ef | 6604 | |
a26d463d DDM |
6605 | if (arg_pretty < 0 && isatty(STDOUT_FILENO)) |
6606 | arg_pretty = true; | |
6607 | ||
9786dfe6 DDM |
6608 | if (arg_architecture >= 0) { |
6609 | FOREACH_ARRAY(p, arg_filter_partitions, arg_n_filter_partitions) | |
6610 | *p = gpt_partition_type_override_architecture(*p, arg_architecture); | |
6611 | ||
6612 | FOREACH_ARRAY(p, arg_defer_partitions, arg_n_defer_partitions) | |
6613 | *p = gpt_partition_type_override_architecture(*p, arg_architecture); | |
6614 | } | |
6615 | ||
e594a3b1 LP |
6616 | return 1; |
6617 | } | |
6618 | ||
6619 | static int parse_proc_cmdline_factory_reset(void) { | |
6620 | bool b; | |
6621 | int r; | |
6622 | ||
6623 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
6624 | return 0; | |
6625 | ||
6626 | if (!in_initrd()) /* Never honour kernel command line factory reset request outside of the initrd */ | |
6627 | return 0; | |
6628 | ||
6629 | r = proc_cmdline_get_bool("systemd.factory_reset", &b); | |
6630 | if (r < 0) | |
6631 | return log_error_errno(r, "Failed to parse systemd.factory_reset kernel command line argument: %m"); | |
6632 | if (r > 0) { | |
6633 | arg_factory_reset = b; | |
6634 | ||
6635 | if (b) | |
6636 | log_notice("Honouring factory reset requested via kernel command line."); | |
6637 | } | |
6638 | ||
6639 | return 0; | |
6640 | } | |
6641 | ||
6642 | static int parse_efi_variable_factory_reset(void) { | |
6643 | _cleanup_free_ char *value = NULL; | |
6644 | int r; | |
6645 | ||
6646 | if (arg_factory_reset >= 0) /* Never override what is specified on the process command line */ | |
6647 | return 0; | |
6648 | ||
6649 | if (!in_initrd()) /* Never honour EFI variable factory reset request outside of the initrd */ | |
6650 | return 0; | |
6651 | ||
e6f055cb | 6652 | r = efi_get_variable_string(EFI_SYSTEMD_VARIABLE(FactoryReset), &value); |
6ce691c3 DL |
6653 | if (r < 0) { |
6654 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) | |
6655 | return 0; | |
e594a3b1 | 6656 | return log_error_errno(r, "Failed to read EFI variable FactoryReset: %m"); |
6ce691c3 | 6657 | } |
e594a3b1 LP |
6658 | |
6659 | r = parse_boolean(value); | |
6660 | if (r < 0) | |
6661 | return log_error_errno(r, "Failed to parse EFI variable FactoryReset: %m"); | |
6662 | ||
6663 | arg_factory_reset = r; | |
6664 | if (r) | |
111a3aae | 6665 | log_notice("Factory reset requested via EFI variable FactoryReset."); |
e594a3b1 LP |
6666 | |
6667 | return 0; | |
6668 | } | |
6669 | ||
6670 | static int remove_efi_variable_factory_reset(void) { | |
6671 | int r; | |
6672 | ||
e6f055cb | 6673 | r = efi_set_variable(EFI_SYSTEMD_VARIABLE(FactoryReset), NULL, 0); |
6ce691c3 DL |
6674 | if (r < 0) { |
6675 | if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r)) | |
6676 | return 0; | |
e594a3b1 | 6677 | return log_error_errno(r, "Failed to remove EFI variable FactoryReset: %m"); |
6ce691c3 | 6678 | } |
e594a3b1 LP |
6679 | |
6680 | log_info("Successfully unset EFI variable FactoryReset."); | |
6681 | return 0; | |
6682 | } | |
6683 | ||
252d6267 LP |
6684 | static int acquire_root_devno( |
6685 | const char *p, | |
6686 | const char *root, | |
6687 | int mode, | |
6688 | char **ret, | |
6689 | int *ret_fd) { | |
6690 | ||
37734dc6 | 6691 | _cleanup_free_ char *found_path = NULL, *node = NULL; |
252d6267 | 6692 | dev_t devno, fd_devno = MODE_INVALID; |
254d1313 | 6693 | _cleanup_close_ int fd = -EBADF; |
e594a3b1 | 6694 | struct stat st; |
e594a3b1 LP |
6695 | int r; |
6696 | ||
a26f4a49 LP |
6697 | assert(p); |
6698 | assert(ret); | |
6699 | assert(ret_fd); | |
6700 | ||
f461a28d | 6701 | fd = chase_and_open(p, root, CHASE_PREFIX_ROOT, mode, &found_path); |
e594a3b1 | 6702 | if (fd < 0) |
252d6267 | 6703 | return fd; |
e594a3b1 LP |
6704 | |
6705 | if (fstat(fd, &st) < 0) | |
6706 | return -errno; | |
6707 | ||
6708 | if (S_ISREG(st.st_mode)) { | |
252d6267 | 6709 | *ret = TAKE_PTR(found_path); |
a26f4a49 | 6710 | *ret_fd = TAKE_FD(fd); |
e594a3b1 LP |
6711 | return 0; |
6712 | } | |
6713 | ||
252d6267 LP |
6714 | if (S_ISBLK(st.st_mode)) { |
6715 | /* Refuse referencing explicit block devices if a root dir is specified, after all we should | |
5c08da58 | 6716 | * not be able to leave the image the root path constrains us to. */ |
252d6267 LP |
6717 | if (root) |
6718 | return -EPERM; | |
6719 | ||
a26f4a49 | 6720 | fd_devno = devno = st.st_rdev; |
252d6267 | 6721 | } else if (S_ISDIR(st.st_mode)) { |
e594a3b1 LP |
6722 | |
6723 | devno = st.st_dev; | |
a26f4a49 | 6724 | if (major(devno) == 0) { |
e594a3b1 LP |
6725 | r = btrfs_get_block_device_fd(fd, &devno); |
6726 | if (r == -ENOTTY) /* not btrfs */ | |
6727 | return -ENODEV; | |
6728 | if (r < 0) | |
6729 | return r; | |
6730 | } | |
e594a3b1 LP |
6731 | } else |
6732 | return -ENOTBLK; | |
6733 | ||
6734 | /* From dm-crypt to backing partition */ | |
6735 | r = block_get_originating(devno, &devno); | |
8e5f3cec LP |
6736 | if (r == -ENOENT) |
6737 | log_debug_errno(r, "Device '%s' has no dm-crypt/dm-verity device, no need to look for underlying block device.", p); | |
6738 | else if (r < 0) | |
e594a3b1 LP |
6739 | log_debug_errno(r, "Failed to find underlying block device for '%s', ignoring: %m", p); |
6740 | ||
6741 | /* From partition to whole disk containing it */ | |
6742 | r = block_get_whole_disk(devno, &devno); | |
6743 | if (r < 0) | |
162392b7 | 6744 | log_debug_errno(r, "Failed to find whole disk block device for '%s', ignoring: %m", p); |
e594a3b1 | 6745 | |
37734dc6 | 6746 | r = devname_from_devnum(S_IFBLK, devno, &node); |
a26f4a49 LP |
6747 | if (r < 0) |
6748 | return log_debug_errno(r, "Failed to determine canonical path for '%s': %m", p); | |
6749 | ||
6bbae9f8 | 6750 | /* Only if we still look at the same block device we can reuse the fd. Otherwise return an |
a26f4a49 | 6751 | * invalidated fd. */ |
37734dc6 YW |
6752 | if (fd_devno != MODE_INVALID && fd_devno == devno) { |
6753 | /* Tell udev not to interfere while we are processing the device */ | |
6754 | if (flock(fd, arg_dry_run ? LOCK_SH : LOCK_EX) < 0) | |
6755 | return log_error_errno(errno, "Failed to lock device '%s': %m", node); | |
6756 | ||
6757 | *ret_fd = TAKE_FD(fd); | |
6758 | } else | |
6759 | *ret_fd = -EBADF; | |
6760 | ||
6761 | *ret = TAKE_PTR(node); | |
a26f4a49 | 6762 | return 0; |
e594a3b1 LP |
6763 | } |
6764 | ||
cc751c75 | 6765 | static int find_root(Context *context) { |
54632d2e | 6766 | _cleanup_free_ char *device = NULL; |
5980d463 | 6767 | int r; |
e594a3b1 | 6768 | |
cc751c75 | 6769 | assert(context); |
a26f4a49 | 6770 | |
e594a3b1 | 6771 | if (arg_node) { |
a26f4a49 | 6772 | if (arg_empty == EMPTY_CREATE) { |
254d1313 | 6773 | _cleanup_close_ int fd = -EBADF; |
a26f4a49 LP |
6774 | _cleanup_free_ char *s = NULL; |
6775 | ||
6776 | s = strdup(arg_node); | |
6777 | if (!s) | |
6778 | return log_oom(); | |
6779 | ||
5332d7c6 | 6780 | fd = open(arg_node, O_RDONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW, 0666); |
a26f4a49 LP |
6781 | if (fd < 0) |
6782 | return log_error_errno(errno, "Failed to create '%s': %m", arg_node); | |
6783 | ||
cc751c75 | 6784 | context->node = TAKE_PTR(s); |
db1d4e6b | 6785 | context->node_is_our_file = true; |
cc751c75 | 6786 | context->backing_fd = TAKE_FD(fd); |
a26f4a49 LP |
6787 | return 0; |
6788 | } | |
6789 | ||
252d6267 LP |
6790 | /* Note that we don't specify a root argument here: if the user explicitly configured a node |
6791 | * we'll take it relative to the host, not the image */ | |
cc751c75 | 6792 | r = acquire_root_devno(arg_node, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
67f0ac8c LP |
6793 | if (r == -EUCLEAN) |
6794 | return btrfs_log_dev_root(LOG_ERR, r, arg_node); | |
e594a3b1 | 6795 | if (r < 0) |
aa2a74ad | 6796 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", arg_node); |
e594a3b1 LP |
6797 | |
6798 | return 0; | |
6799 | } | |
6800 | ||
a26f4a49 LP |
6801 | assert(IN_SET(arg_empty, EMPTY_REFUSE, EMPTY_ALLOW)); |
6802 | ||
54632d2e KK |
6803 | /* If the root mount has been replaced by some form of volatile file system (overlayfs), the |
6804 | * original root block device node is symlinked in /run/systemd/volatile-root. Let's read that | |
6805 | * here. */ | |
6806 | r = readlink_malloc("/run/systemd/volatile-root", &device); | |
6807 | if (r == -ENOENT) { /* volatile-root not found */ | |
6808 | /* Let's search for the root device. We look for two cases here: first in /, and then in /usr. The | |
6809 | * latter we check for cases where / is a tmpfs and only /usr is an actual persistent block device | |
6810 | * (think: volatile setups) */ | |
e594a3b1 | 6811 | |
54632d2e | 6812 | FOREACH_STRING(p, "/", "/usr") { |
e594a3b1 | 6813 | |
cc751c75 DDM |
6814 | r = acquire_root_devno(p, arg_root, O_RDONLY|O_DIRECTORY|O_CLOEXEC, &context->node, |
6815 | &context->backing_fd); | |
54632d2e KK |
6816 | if (r < 0) { |
6817 | if (r == -EUCLEAN) | |
6818 | return btrfs_log_dev_root(LOG_ERR, r, p); | |
6819 | if (r != -ENODEV) | |
6820 | return log_error_errno(r, "Failed to determine backing device of %s: %m", p); | |
6821 | } else | |
6822 | return 0; | |
6823 | } | |
6824 | } else if (r < 0) | |
6825 | return log_error_errno(r, "Failed to read symlink /run/systemd/volatile-root: %m"); | |
6826 | else { | |
cc751c75 | 6827 | r = acquire_root_devno(device, NULL, O_RDONLY|O_CLOEXEC, &context->node, &context->backing_fd); |
54632d2e KK |
6828 | if (r == -EUCLEAN) |
6829 | return btrfs_log_dev_root(LOG_ERR, r, device); | |
6830 | if (r < 0) | |
6831 | return log_error_errno(r, "Failed to open file or determine backing device of %s: %m", device); | |
6832 | ||
6833 | return 0; | |
e594a3b1 LP |
6834 | } |
6835 | ||
6836 | return log_error_errno(SYNTHETIC_ERRNO(ENODEV), "Failed to discover root block device."); | |
6837 | } | |
6838 | ||
81dde3d8 | 6839 | static int resize_pt(int fd, uint64_t sector_size) { |
f9b3afae LP |
6840 | _cleanup_(fdisk_unref_contextp) struct fdisk_context *c = NULL; |
6841 | int r; | |
6842 | ||
6843 | /* After resizing the backing file we need to resize the partition table itself too, so that it takes | |
6844 | * possession of the enlarged backing file. For this it suffices to open the device with libfdisk and | |
6845 | * immediately write it again, with no changes. */ | |
6846 | ||
81dde3d8 | 6847 | r = fdisk_new_context_fd(fd, /* read_only= */ false, sector_size, &c); |
f9b3afae | 6848 | if (r < 0) |
ddb6eeaf | 6849 | return log_error_errno(r, "Failed to open device '%s': %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6850 | |
6851 | r = fdisk_has_label(c); | |
6852 | if (r < 0) | |
ddb6eeaf | 6853 | return log_error_errno(r, "Failed to determine whether disk '%s' has a disk label: %m", FORMAT_PROC_FD_PATH(fd)); |
f9b3afae LP |
6854 | if (r == 0) { |
6855 | log_debug("Not resizing partition table, as there currently is none."); | |
6856 | return 0; | |
6857 | } | |
6858 | ||
6859 | r = fdisk_write_disklabel(c); | |
6860 | if (r < 0) | |
6861 | return log_error_errno(r, "Failed to write resized partition table: %m"); | |
6862 | ||
6863 | log_info("Resized partition table."); | |
6864 | return 1; | |
6865 | } | |
6866 | ||
252d6267 LP |
6867 | static int resize_backing_fd( |
6868 | const char *node, /* The primary way we access the disk image to operate on */ | |
6869 | int *fd, /* An O_RDONLY fd referring to that inode */ | |
6870 | const char *backing_file, /* If the above refers to a loopback device, the backing regular file for that, which we can grow */ | |
81dde3d8 LP |
6871 | LoopDevice *loop_device, |
6872 | uint64_t sector_size) { | |
252d6267 | 6873 | |
254d1313 | 6874 | _cleanup_close_ int writable_fd = -EBADF; |
252d6267 | 6875 | uint64_t current_size; |
a26f4a49 LP |
6876 | struct stat st; |
6877 | int r; | |
6878 | ||
6879 | assert(node); | |
6880 | assert(fd); | |
6881 | ||
6882 | if (arg_size == UINT64_MAX) /* Nothing to do */ | |
6883 | return 0; | |
6884 | ||
6885 | if (*fd < 0) { | |
6886 | /* Open the file if we haven't opened it yet. Note that we open it read-only here, just to | |
6887 | * keep a reference to the file we can pass around. */ | |
6888 | *fd = open(node, O_RDONLY|O_CLOEXEC); | |
6889 | if (*fd < 0) | |
6890 | return log_error_errno(errno, "Failed to open '%s' in order to adjust size: %m", node); | |
6891 | } | |
6892 | ||
6893 | if (fstat(*fd, &st) < 0) | |
6894 | return log_error_errno(errno, "Failed to stat '%s': %m", node); | |
6895 | ||
252d6267 LP |
6896 | if (S_ISBLK(st.st_mode)) { |
6897 | if (!backing_file) | |
6898 | return log_error_errno(SYNTHETIC_ERRNO(EBADF), "Cannot resize block device '%s'.", node); | |
6899 | ||
6900 | assert(loop_device); | |
a26f4a49 | 6901 | |
252d6267 LP |
6902 | if (ioctl(*fd, BLKGETSIZE64, ¤t_size) < 0) |
6903 | return log_error_errno(errno, "Failed to determine size of block device %s: %m", node); | |
6904 | } else { | |
6905 | r = stat_verify_regular(&st); | |
6906 | if (r < 0) | |
6907 | return log_error_errno(r, "Specified path '%s' is not a regular file or loopback block device, cannot resize: %m", node); | |
6908 | ||
6909 | assert(!backing_file); | |
6910 | assert(!loop_device); | |
6911 | current_size = st.st_size; | |
6912 | } | |
6913 | ||
252d6267 | 6914 | if (current_size >= arg_size) { |
2b59bf51 ZJS |
6915 | log_info("File '%s' already is of requested size or larger, not growing. (%s >= %s)", |
6916 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 LP |
6917 | return 0; |
6918 | } | |
6919 | ||
252d6267 LP |
6920 | if (S_ISBLK(st.st_mode)) { |
6921 | assert(backing_file); | |
6922 | ||
6923 | /* This is a loopback device. We can't really grow those directly, but we can grow the | |
6924 | * backing file, hence let's do that. */ | |
6925 | ||
6926 | writable_fd = open(backing_file, O_WRONLY|O_CLOEXEC|O_NONBLOCK); | |
6927 | if (writable_fd < 0) | |
6928 | return log_error_errno(errno, "Failed to open backing file '%s': %m", backing_file); | |
6929 | ||
6930 | if (fstat(writable_fd, &st) < 0) | |
6931 | return log_error_errno(errno, "Failed to stat() backing file '%s': %m", backing_file); | |
6932 | ||
6933 | r = stat_verify_regular(&st); | |
6934 | if (r < 0) | |
6935 | return log_error_errno(r, "Backing file '%s' of block device is not a regular file: %m", backing_file); | |
6936 | ||
6937 | if ((uint64_t) st.st_size != current_size) | |
6938 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2b59bf51 ZJS |
6939 | "Size of backing file '%s' of loopback block device '%s' don't match, refusing.", |
6940 | node, backing_file); | |
252d6267 LP |
6941 | } else { |
6942 | assert(S_ISREG(st.st_mode)); | |
6943 | assert(!backing_file); | |
a26f4a49 | 6944 | |
252d6267 LP |
6945 | /* The file descriptor is read-only. In order to grow the file we need to have a writable fd. We |
6946 | * reopen the file for that temporarily. We keep the writable fd only open for this operation though, | |
6947 | * as fdisk can't accept it anyway. */ | |
6948 | ||
6949 | writable_fd = fd_reopen(*fd, O_WRONLY|O_CLOEXEC); | |
6950 | if (writable_fd < 0) | |
6951 | return log_error_errno(writable_fd, "Failed to reopen backing file '%s' writable: %m", node); | |
6952 | } | |
a26f4a49 LP |
6953 | |
6954 | if (!arg_discard) { | |
6955 | if (fallocate(writable_fd, 0, 0, arg_size) < 0) { | |
6956 | if (!ERRNO_IS_NOT_SUPPORTED(errno)) | |
6957 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by allocation: %m", | |
2b59bf51 | 6958 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 LP |
6959 | |
6960 | /* Fallback to truncation, if fallocate() is not supported. */ | |
6961 | log_debug("Backing file system does not support fallocate(), falling back to ftruncate()."); | |
6962 | } else { | |
252d6267 | 6963 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6964 | log_info("Allocated %s for '%s'.", FORMAT_BYTES(arg_size), node); |
a26f4a49 | 6965 | else |
2b59bf51 ZJS |
6966 | log_info("File '%s' grown from %s to %s by allocation.", |
6967 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
a26f4a49 | 6968 | |
252d6267 | 6969 | goto done; |
a26f4a49 LP |
6970 | } |
6971 | } | |
6972 | ||
6973 | if (ftruncate(writable_fd, arg_size) < 0) | |
6974 | return log_error_errno(errno, "Failed to grow '%s' from %s to %s by truncation: %m", | |
2b59bf51 | 6975 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); |
a26f4a49 | 6976 | |
252d6267 | 6977 | if (current_size == 0) /* Likely regular file just created by us */ |
2b59bf51 | 6978 | log_info("Sized '%s' to %s.", node, FORMAT_BYTES(arg_size)); |
252d6267 | 6979 | else |
2b59bf51 ZJS |
6980 | log_info("File '%s' grown from %s to %s by truncation.", |
6981 | node, FORMAT_BYTES(current_size), FORMAT_BYTES(arg_size)); | |
252d6267 LP |
6982 | |
6983 | done: | |
81dde3d8 | 6984 | r = resize_pt(writable_fd, sector_size); |
f9b3afae LP |
6985 | if (r < 0) |
6986 | return r; | |
6987 | ||
252d6267 LP |
6988 | if (loop_device) { |
6989 | r = loop_device_refresh_size(loop_device, UINT64_MAX, arg_size); | |
6990 | if (r < 0) | |
6991 | return log_error_errno(r, "Failed to update loop device size: %m"); | |
6992 | } | |
a26f4a49 LP |
6993 | |
6994 | return 1; | |
6995 | } | |
6996 | ||
170c9823 | 6997 | static int determine_auto_size(Context *c) { |
994b3031 | 6998 | uint64_t sum; |
170c9823 | 6999 | |
ac33e147 | 7000 | assert(c); |
170c9823 | 7001 | |
994b3031 LP |
7002 | sum = round_up_size(GPT_METADATA_SIZE, 4096); |
7003 | ||
170c9823 LP |
7004 | LIST_FOREACH(partitions, p, c->partitions) { |
7005 | uint64_t m; | |
7006 | ||
7007 | if (p->dropped) | |
7008 | continue; | |
7009 | ||
994b3031 | 7010 | m = partition_min_size_with_padding(c, p); |
170c9823 LP |
7011 | if (m > UINT64_MAX - sum) |
7012 | return log_error_errno(SYNTHETIC_ERRNO(EOVERFLOW), "Image would grow too large, refusing."); | |
7013 | ||
7014 | sum += m; | |
7015 | } | |
7016 | ||
2b59bf51 ZJS |
7017 | if (c->total != UINT64_MAX) |
7018 | /* Image already allocated? Then show its size. */ | |
7019 | log_info("Automatically determined minimal disk image size as %s, current image size is %s.", | |
7020 | FORMAT_BYTES(sum), FORMAT_BYTES(c->total)); | |
7021 | else | |
7022 | /* If the image is being created right now, then it has no previous size, suppress any comment about it hence. */ | |
7023 | log_info("Automatically determined minimal disk image size as %s.", | |
7024 | FORMAT_BYTES(sum)); | |
170c9823 LP |
7025 | |
7026 | arg_size = sum; | |
7027 | return 0; | |
7028 | } | |
7029 | ||
e594a3b1 | 7030 | static int run(int argc, char *argv[]) { |
252d6267 | 7031 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
a4b3e942 | 7032 | _cleanup_(umount_and_freep) char *mounted_dir = NULL; |
e594a3b1 | 7033 | _cleanup_(context_freep) Context* context = NULL; |
cc751c75 | 7034 | bool node_is_our_loop = false; |
e594a3b1 LP |
7035 | int r; |
7036 | ||
7037 | log_show_color(true); | |
7038 | log_parse_environment(); | |
7039 | log_open(); | |
7040 | ||
e594a3b1 LP |
7041 | r = parse_argv(argc, argv); |
7042 | if (r <= 0) | |
7043 | return r; | |
7044 | ||
7045 | r = parse_proc_cmdline_factory_reset(); | |
7046 | if (r < 0) | |
7047 | return r; | |
7048 | ||
7049 | r = parse_efi_variable_factory_reset(); | |
7050 | if (r < 0) | |
7051 | return r; | |
7052 | ||
30f19400 LP |
7053 | #if HAVE_LIBCRYPTSETUP |
7054 | cryptsetup_enable_logging(NULL); | |
7055 | #endif | |
7056 | ||
252d6267 LP |
7057 | if (arg_image) { |
7058 | assert(!arg_root); | |
7059 | ||
7060 | /* Mount this strictly read-only: we shall modify the partition table, not the file | |
7061 | * systems */ | |
7062 | r = mount_image_privately_interactively( | |
7063 | arg_image, | |
84be0c71 | 7064 | arg_image_policy, |
252d6267 LP |
7065 | DISSECT_IMAGE_MOUNT_READ_ONLY | |
7066 | (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) */ | |
7067 | DISSECT_IMAGE_GPT_ONLY | | |
7068 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
7069 | DISSECT_IMAGE_USR_NO_ROOT | | |
7070 | DISSECT_IMAGE_REQUIRE_ROOT, | |
7071 | &mounted_dir, | |
a133d2c3 | 7072 | /* ret_dir_fd= */ NULL, |
e330f97a | 7073 | &loop_device); |
252d6267 LP |
7074 | if (r < 0) |
7075 | return r; | |
7076 | ||
7077 | arg_root = strdup(mounted_dir); | |
7078 | if (!arg_root) | |
7079 | return log_oom(); | |
7080 | ||
7081 | if (!arg_node) { | |
7082 | arg_node = strdup(loop_device->node); | |
7083 | if (!arg_node) | |
7084 | return log_oom(); | |
7085 | ||
3d62af7d | 7086 | /* Remember that the device we are about to manipulate is actually the one we |
252d6267 LP |
7087 | * allocated here, and thus to increase its backing file we know what to do */ |
7088 | node_is_our_loop = true; | |
7089 | } | |
7090 | } | |
7091 | ||
e594a3b1 LP |
7092 | context = context_new(arg_seed); |
7093 | if (!context) | |
7094 | return log_oom(); | |
7095 | ||
1e46985a DDM |
7096 | r = context_copy_from(context); |
7097 | if (r < 0) | |
7098 | return r; | |
7099 | ||
224c853f RP |
7100 | strv_uniq(arg_definitions); |
7101 | ||
4b047310 | 7102 | r = context_read_definitions(context); |
e594a3b1 LP |
7103 | if (r < 0) |
7104 | return r; | |
7105 | ||
cc751c75 | 7106 | r = find_root(context); |
0ae5ffe0 YW |
7107 | if (r < 0) |
7108 | return r; | |
7109 | ||
a26f4a49 | 7110 | if (arg_size != UINT64_MAX) { |
252d6267 | 7111 | r = resize_backing_fd( |
cc751c75 DDM |
7112 | context->node, |
7113 | &context->backing_fd, | |
252d6267 | 7114 | node_is_our_loop ? arg_image : NULL, |
81dde3d8 LP |
7115 | node_is_our_loop ? loop_device : NULL, |
7116 | context->sector_size); | |
a26f4a49 LP |
7117 | if (r < 0) |
7118 | return r; | |
7119 | } | |
7120 | ||
cc751c75 | 7121 | r = context_load_partition_table(context); |
e594a3b1 LP |
7122 | if (r == -EHWPOISON) |
7123 | return 77; /* Special return value which means "Not GPT, so not doing anything". This isn't | |
7124 | * really an error when called at boot. */ | |
7125 | if (r < 0) | |
7126 | return r; | |
cc751c75 | 7127 | context->from_scratch = r > 0; /* Starting from scratch */ |
e594a3b1 LP |
7128 | |
7129 | if (arg_can_factory_reset) { | |
7130 | r = context_can_factory_reset(context); | |
7131 | if (r < 0) | |
7132 | return r; | |
7133 | if (r == 0) | |
7134 | return EXIT_FAILURE; | |
7135 | ||
7136 | return 0; | |
7137 | } | |
7138 | ||
cc751c75 | 7139 | r = context_factory_reset(context); |
e594a3b1 LP |
7140 | if (r < 0) |
7141 | return r; | |
7142 | if (r > 0) { | |
7143 | /* We actually did a factory reset! */ | |
7144 | r = remove_efi_variable_factory_reset(); | |
7145 | if (r < 0) | |
7146 | return r; | |
7147 | ||
7148 | /* Reload the reduced partition table */ | |
7149 | context_unload_partition_table(context); | |
cc751c75 | 7150 | r = context_load_partition_table(context); |
e594a3b1 LP |
7151 | if (r < 0) |
7152 | return r; | |
7153 | } | |
7154 | ||
e594a3b1 LP |
7155 | r = context_read_seed(context, arg_root); |
7156 | if (r < 0) | |
7157 | return r; | |
7158 | ||
8bbbdfd7 DDM |
7159 | /* Make sure each partition has a unique UUID and unique label */ |
7160 | r = context_acquire_partition_uuids_and_labels(context); | |
7161 | if (r < 0) | |
7162 | return r; | |
7163 | ||
757bc2e4 | 7164 | /* Open all files to copy blocks from now, since we want to take their size into consideration */ |
5c08da58 LP |
7165 | r = context_open_copy_block_paths( |
7166 | context, | |
7802194a | 7167 | loop_device ? loop_device->devno : /* if --image= is specified, only allow partitions on the loopback device */ |
5c08da58 LP |
7168 | arg_root && !arg_image ? 0 : /* if --root= is specified, don't accept any block device */ |
7169 | (dev_t) -1); /* if neither is specified, make no restrictions */ | |
757bc2e4 LP |
7170 | if (r < 0) |
7171 | return r; | |
7172 | ||
5eef7047 DDM |
7173 | r = context_minimize(context); |
7174 | if (r < 0) | |
7175 | return r; | |
7176 | ||
170c9823 LP |
7177 | if (arg_size_auto) { |
7178 | r = determine_auto_size(context); | |
7179 | if (r < 0) | |
7180 | return r; | |
7181 | ||
7182 | /* Flush out everything again, and let's grow the file first, then start fresh */ | |
7183 | context_unload_partition_table(context); | |
7184 | ||
ac33e147 | 7185 | assert(arg_size != UINT64_MAX); |
252d6267 | 7186 | r = resize_backing_fd( |
cc751c75 DDM |
7187 | context->node, |
7188 | &context->backing_fd, | |
252d6267 | 7189 | node_is_our_loop ? arg_image : NULL, |
81dde3d8 LP |
7190 | node_is_our_loop ? loop_device : NULL, |
7191 | context->sector_size); | |
170c9823 LP |
7192 | if (r < 0) |
7193 | return r; | |
7194 | ||
cc751c75 | 7195 | r = context_load_partition_table(context); |
170c9823 LP |
7196 | if (r < 0) |
7197 | return r; | |
7198 | } | |
7199 | ||
e594a3b1 LP |
7200 | /* First try to fit new partitions in, dropping by priority until it fits */ |
7201 | for (;;) { | |
14a4c4ed LP |
7202 | uint64_t largest_free_area; |
7203 | ||
7204 | if (context_allocate_partitions(context, &largest_free_area)) | |
e594a3b1 LP |
7205 | break; /* Success! */ |
7206 | ||
9ccceb9d | 7207 | if (!context_drop_or_foreignize_one_priority(context)) { |
d17db7b2 | 7208 | r = log_error_errno(SYNTHETIC_ERRNO(ENOSPC), |
14a4c4ed | 7209 | "Can't fit requested partitions into available free space (%s), refusing.", |
2b59bf51 | 7210 | FORMAT_BYTES(largest_free_area)); |
d17db7b2 LP |
7211 | determine_auto_size(context); |
7212 | return r; | |
7213 | } | |
e594a3b1 LP |
7214 | } |
7215 | ||
7216 | /* Now assign free space according to the weight logic */ | |
7217 | r = context_grow_partitions(context); | |
7218 | if (r < 0) | |
7219 | return r; | |
7220 | ||
0b7f574f | 7221 | /* Now calculate where each new partition gets placed */ |
e594a3b1 LP |
7222 | context_place_partitions(context); |
7223 | ||
cc751c75 | 7224 | (void) context_dump(context, /*late=*/ false); |
a26d463d | 7225 | |
cc751c75 | 7226 | r = context_write_partition_table(context); |
e594a3b1 LP |
7227 | if (r < 0) |
7228 | return r; | |
7229 | ||
4cee8333 DDM |
7230 | r = context_split(context); |
7231 | if (r < 0) | |
7232 | return r; | |
7233 | ||
cc751c75 | 7234 | (void) context_dump(context, /*late=*/ true); |
b5b7879a | 7235 | |
db1d4e6b DDM |
7236 | context->node = mfree(context->node); |
7237 | ||
a2d7c42e DDM |
7238 | LIST_FOREACH(partitions, p, context->partitions) |
7239 | p->split_path = mfree(p->split_path); | |
b5b7879a | 7240 | |
e594a3b1 LP |
7241 | return 0; |
7242 | } | |
7243 | ||
7244 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |