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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
8c1be37e | 2 | |
10c1b188 LP |
3 | #if HAVE_VALGRIND_MEMCHECK_H |
4 | #include <valgrind/memcheck.h> | |
5 | #endif | |
6 | ||
01234e1f YW |
7 | #include <linux/dm-ioctl.h> |
8 | #include <linux/loop.h> | |
8c1be37e | 9 | #include <sys/mount.h> |
3b925504 LP |
10 | #include <sys/prctl.h> |
11 | #include <sys/wait.h> | |
f5ea63a5 | 12 | #include <sysexits.h> |
8c1be37e | 13 | |
3c1f2cee | 14 | #include "sd-device.h" |
dccca82b LP |
15 | #include "sd-id128.h" |
16 | ||
8c1be37e | 17 | #include "architecture.h" |
18b5886e | 18 | #include "ask-password-api.h" |
8c1be37e | 19 | #include "blkid-util.h" |
18c528e9 | 20 | #include "blockdev-util.h" |
3b925504 | 21 | #include "copy.h" |
1e2f3230 | 22 | #include "cryptsetup-util.h" |
3b925504 | 23 | #include "def.h" |
553e15f2 | 24 | #include "device-nodes.h" |
8437c059 | 25 | #include "device-util.h" |
8c1be37e | 26 | #include "dissect-image.h" |
a709a315 | 27 | #include "dm-util.h" |
686d13b9 | 28 | #include "env-file.h" |
18b5886e | 29 | #include "fd-util.h" |
78ebe980 | 30 | #include "fileio.h" |
2eedfd2d | 31 | #include "fs-util.h" |
cf32c486 | 32 | #include "fsck-util.h" |
8c1be37e | 33 | #include "gpt.h" |
78ebe980 | 34 | #include "hexdecoct.h" |
3b925504 LP |
35 | #include "hostname-util.h" |
36 | #include "id128-util.h" | |
6aa05ebd | 37 | #include "mkdir.h" |
8c1be37e | 38 | #include "mount-util.h" |
e4de7287 | 39 | #include "mountpoint-util.h" |
6aa05ebd | 40 | #include "namespace-util.h" |
d8b4d14d | 41 | #include "nulstr-util.h" |
d58ad743 | 42 | #include "os-util.h" |
8c1be37e | 43 | #include "path-util.h" |
3b925504 LP |
44 | #include "process-util.h" |
45 | #include "raw-clone.h" | |
46 | #include "signal-util.h" | |
8c1be37e | 47 | #include "stat-util.h" |
18b5886e | 48 | #include "stdio-util.h" |
8c1be37e LP |
49 | #include "string-table.h" |
50 | #include "string-util.h" | |
2eedfd2d | 51 | #include "strv.h" |
e4de7287 | 52 | #include "tmpfile-util.h" |
a8040b6d | 53 | #include "udev-util.h" |
2d3a5a73 | 54 | #include "user-util.h" |
41488e1f | 55 | #include "xattr-util.h" |
8c1be37e | 56 | |
28e2641a FF |
57 | /* how many times to wait for the device nodes to appear */ |
58 | #define N_DEVICE_NODE_LIST_ATTEMPTS 10 | |
59 | ||
c34b75a1 | 60 | int probe_filesystem(const char *node, char **ret_fstype) { |
7cc84b2c | 61 | /* Try to find device content type and return it in *ret_fstype. If nothing is found, |
5238e957 | 62 | * 0/NULL will be returned. -EUCLEAN will be returned for ambiguous results, and an |
7cc84b2c ZJS |
63 | * different error otherwise. */ |
64 | ||
349cc4a5 | 65 | #if HAVE_BLKID |
8e766630 | 66 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; |
18b5886e LP |
67 | const char *fstype; |
68 | int r; | |
69 | ||
995fa2e5 | 70 | errno = 0; |
18b5886e LP |
71 | b = blkid_new_probe_from_filename(node); |
72 | if (!b) | |
66855de7 | 73 | return errno_or_else(ENOMEM); |
18b5886e LP |
74 | |
75 | blkid_probe_enable_superblocks(b, 1); | |
76 | blkid_probe_set_superblocks_flags(b, BLKID_SUBLKS_TYPE); | |
77 | ||
78 | errno = 0; | |
79 | r = blkid_do_safeprobe(b); | |
7cc84b2c ZJS |
80 | if (r == 1) { |
81 | log_debug("No type detected on partition %s", node); | |
18b5886e LP |
82 | goto not_found; |
83 | } | |
58dfbfbd LP |
84 | if (r == -2) |
85 | return log_debug_errno(SYNTHETIC_ERRNO(EUCLEAN), | |
86 | "Results ambiguous for partition %s", node); | |
b382db9f | 87 | if (r != 0) |
66855de7 | 88 | return errno_or_else(EIO); |
18b5886e LP |
89 | |
90 | (void) blkid_probe_lookup_value(b, "TYPE", &fstype, NULL); | |
91 | ||
92 | if (fstype) { | |
93 | char *t; | |
94 | ||
95 | t = strdup(fstype); | |
96 | if (!t) | |
97 | return -ENOMEM; | |
98 | ||
99 | *ret_fstype = t; | |
100 | return 1; | |
101 | } | |
102 | ||
103 | not_found: | |
104 | *ret_fstype = NULL; | |
105 | return 0; | |
d1c536f5 ZJS |
106 | #else |
107 | return -EOPNOTSUPP; | |
a75e27eb | 108 | #endif |
d1c536f5 | 109 | } |
18b5886e | 110 | |
40c10d3f | 111 | #if HAVE_BLKID |
cde942f6 JPRV |
112 | /* Detect RPMB and Boot partitions, which are not listed by blkid. |
113 | * See https://github.com/systemd/systemd/issues/5806. */ | |
3c1f2cee | 114 | static bool device_is_mmc_special_partition(sd_device *d) { |
aae22eb3 LP |
115 | const char *sysname; |
116 | ||
f70e7f70 LP |
117 | assert(d); |
118 | ||
3c1f2cee YW |
119 | if (sd_device_get_sysname(d, &sysname) < 0) |
120 | return false; | |
121 | ||
122 | return startswith(sysname, "mmcblk") && | |
0cfa78dd | 123 | (endswith(sysname, "rpmb") || endswith(sysname, "boot0") || endswith(sysname, "boot1")); |
cde942f6 JPRV |
124 | } |
125 | ||
3c1f2cee | 126 | static bool device_is_block(sd_device *d) { |
aae22eb3 LP |
127 | const char *ss; |
128 | ||
f70e7f70 LP |
129 | assert(d); |
130 | ||
3c1f2cee | 131 | if (sd_device_get_subsystem(d, &ss) < 0) |
aae22eb3 LP |
132 | return false; |
133 | ||
134 | return streq(ss, "block"); | |
135 | } | |
ea887be0 ZJS |
136 | |
137 | static int enumerator_for_parent(sd_device *d, sd_device_enumerator **ret) { | |
138 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
139 | int r; | |
140 | ||
f70e7f70 LP |
141 | assert(d); |
142 | assert(ret); | |
143 | ||
ea887be0 ZJS |
144 | r = sd_device_enumerator_new(&e); |
145 | if (r < 0) | |
146 | return r; | |
147 | ||
148 | r = sd_device_enumerator_allow_uninitialized(e); | |
149 | if (r < 0) | |
150 | return r; | |
151 | ||
152 | r = sd_device_enumerator_add_match_parent(e, d); | |
153 | if (r < 0) | |
154 | return r; | |
155 | ||
156 | *ret = TAKE_PTR(e); | |
157 | return 0; | |
158 | } | |
159 | ||
ea887be0 ZJS |
160 | static int wait_for_partitions_to_appear( |
161 | int fd, | |
162 | sd_device *d, | |
163 | unsigned num_partitions, | |
052eaf5c | 164 | DissectImageFlags flags, |
ea887be0 ZJS |
165 | sd_device_enumerator **ret_enumerator) { |
166 | ||
167 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
168 | sd_device *q; | |
169 | unsigned n; | |
170 | int r; | |
171 | ||
f70e7f70 LP |
172 | assert(fd >= 0); |
173 | assert(d); | |
174 | assert(ret_enumerator); | |
175 | ||
ea887be0 ZJS |
176 | r = enumerator_for_parent(d, &e); |
177 | if (r < 0) | |
178 | return r; | |
179 | ||
180 | /* Count the partitions enumerated by the kernel */ | |
181 | n = 0; | |
182 | FOREACH_DEVICE(e, q) { | |
183 | if (sd_device_get_devnum(q, NULL) < 0) | |
184 | continue; | |
185 | if (!device_is_block(q)) | |
186 | continue; | |
187 | if (device_is_mmc_special_partition(q)) | |
188 | continue; | |
189 | ||
052eaf5c | 190 | if (!FLAGS_SET(flags, DISSECT_IMAGE_NO_UDEV)) { |
1b47436e | 191 | r = device_wait_for_initialization(q, "block", USEC_INFINITY, NULL); |
052eaf5c LP |
192 | if (r < 0) |
193 | return r; | |
194 | } | |
a8040b6d | 195 | |
ea887be0 ZJS |
196 | n++; |
197 | } | |
198 | ||
199 | if (n == num_partitions + 1) { | |
200 | *ret_enumerator = TAKE_PTR(e); | |
201 | return 0; /* success! */ | |
202 | } | |
203 | if (n > num_partitions + 1) | |
204 | return log_debug_errno(SYNTHETIC_ERRNO(EIO), | |
205 | "blkid and kernel partition lists do not match."); | |
206 | ||
207 | /* The kernel has probed fewer partitions than blkid? Maybe the kernel prober is still running or it | |
208 | * got EBUSY because udev already opened the device. Let's reprobe the device, which is a synchronous | |
209 | * call that waits until probing is complete. */ | |
210 | ||
211 | for (unsigned j = 0; ; j++) { | |
212 | if (j++ > 20) | |
213 | return -EBUSY; | |
214 | ||
215 | if (ioctl(fd, BLKRRPART, 0) >= 0) | |
216 | break; | |
217 | r = -errno; | |
218 | if (r == -EINVAL) { | |
834c15ec LP |
219 | /* If we are running on a block device that has partition scanning off, return an |
220 | * explicit recognizable error about this, so that callers can generate a proper | |
221 | * message explaining the situation. */ | |
ea887be0 | 222 | |
834c15ec LP |
223 | r = blockdev_partscan_enabled(fd); |
224 | if (r < 0) | |
225 | return r; | |
226 | if (r == 0) | |
d7a0f1f4 | 227 | return log_debug_errno(SYNTHETIC_ERRNO(EPROTONOSUPPORT), |
834c15ec | 228 | "Device is a loop device and partition scanning is off!"); |
10c1b188 | 229 | |
834c15ec | 230 | return -EINVAL; /* original error */ |
ea887be0 ZJS |
231 | } |
232 | if (r != -EBUSY) | |
233 | return r; | |
234 | ||
235 | /* If something else has the device open, such as an udev rule, the ioctl will return | |
236 | * EBUSY. Since there's no way to wait until it isn't busy anymore, let's just wait a bit, | |
237 | * and try again. | |
238 | * | |
239 | * This is really something they should fix in the kernel! */ | |
240 | (void) usleep(50 * USEC_PER_MSEC); | |
241 | ||
242 | } | |
243 | ||
244 | return -EAGAIN; /* no success yet, try again */ | |
245 | } | |
246 | ||
247 | static int loop_wait_for_partitions_to_appear( | |
248 | int fd, | |
249 | sd_device *d, | |
250 | unsigned num_partitions, | |
052eaf5c | 251 | DissectImageFlags flags, |
ea887be0 | 252 | sd_device_enumerator **ret_enumerator) { |
a8040b6d | 253 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
ea887be0 ZJS |
254 | int r; |
255 | ||
f70e7f70 LP |
256 | assert(fd >= 0); |
257 | assert(d); | |
258 | assert(ret_enumerator); | |
259 | ||
b887c8b8 ZJS |
260 | log_debug("Waiting for device (parent + %d partitions) to appear...", num_partitions); |
261 | ||
052eaf5c | 262 | if (!FLAGS_SET(flags, DISSECT_IMAGE_NO_UDEV)) { |
1b47436e | 263 | r = device_wait_for_initialization(d, "block", USEC_INFINITY, &device); |
052eaf5c LP |
264 | if (r < 0) |
265 | return r; | |
266 | } else | |
267 | device = sd_device_ref(d); | |
a8040b6d | 268 | |
ea887be0 | 269 | for (unsigned i = 0; i < N_DEVICE_NODE_LIST_ATTEMPTS; i++) { |
052eaf5c | 270 | r = wait_for_partitions_to_appear(fd, device, num_partitions, flags, ret_enumerator); |
ea887be0 ZJS |
271 | if (r != -EAGAIN) |
272 | return r; | |
273 | } | |
274 | ||
275 | return log_debug_errno(SYNTHETIC_ERRNO(ENXIO), | |
276 | "Kernel partitions dit not appear within %d attempts", | |
277 | N_DEVICE_NODE_LIST_ATTEMPTS); | |
278 | } | |
279 | ||
0f7c9a3d LP |
280 | static void check_partition_flags( |
281 | const char *node, | |
282 | unsigned long long pflags, | |
283 | unsigned long long supported) { | |
284 | ||
285 | assert(node); | |
286 | ||
287 | /* Mask away all flags supported by this partition's type and the three flags the UEFI spec defines generically */ | |
288 | pflags &= ~(supported | GPT_FLAG_REQUIRED_PARTITION | GPT_FLAG_NO_BLOCK_IO_PROTOCOL | GPT_FLAG_LEGACY_BIOS_BOOTABLE); | |
289 | ||
290 | if (pflags == 0) | |
291 | return; | |
292 | ||
293 | /* If there are other bits set, then log about it, to make things discoverable */ | |
294 | for (unsigned i = 0; i < sizeof(pflags) * 8; i++) { | |
295 | unsigned long long bit = 1ULL << i; | |
296 | if (!FLAGS_SET(pflags, bit)) | |
297 | continue; | |
298 | ||
299 | log_debug("Unexpected partition flag %llu set on %s!", bit, node); | |
300 | } | |
301 | } | |
302 | ||
40c10d3f | 303 | #endif |
aae22eb3 | 304 | |
4526113f LP |
305 | int dissect_image( |
306 | int fd, | |
89e62e0b | 307 | const VeritySettings *verity, |
18d73705 | 308 | const MountOptions *mount_options, |
4526113f LP |
309 | DissectImageFlags flags, |
310 | DissectedImage **ret) { | |
8c1be37e | 311 | |
349cc4a5 | 312 | #if HAVE_BLKID |
aee36b4e LP |
313 | sd_id128_t root_uuid = SD_ID128_NULL, root_verity_uuid = SD_ID128_NULL, |
314 | usr_uuid = SD_ID128_NULL, usr_verity_uuid = SD_ID128_NULL; | |
3c1f2cee | 315 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; |
8c1be37e | 316 | bool is_gpt, is_mbr, generic_rw, multiple_generic = false; |
3c1f2cee | 317 | _cleanup_(sd_device_unrefp) sd_device *d = NULL; |
8c1be37e | 318 | _cleanup_(dissected_image_unrefp) DissectedImage *m = NULL; |
8e766630 | 319 | _cleanup_(blkid_free_probep) blkid_probe b = NULL; |
8c1be37e | 320 | _cleanup_free_ char *generic_node = NULL; |
be30ad41 | 321 | sd_id128_t generic_uuid = SD_ID128_NULL; |
9b6deb03 | 322 | const char *pttype = NULL; |
8c1be37e LP |
323 | blkid_partlist pl; |
324 | int r, generic_nr; | |
325 | struct stat st; | |
3c1f2cee | 326 | sd_device *q; |
8c1be37e LP |
327 | |
328 | assert(fd >= 0); | |
329 | assert(ret); | |
89e62e0b | 330 | assert(!verity || verity->root_hash || verity->root_hash_size == 0); |
e7cbe5cb | 331 | assert(!((flags & DISSECT_IMAGE_GPT_ONLY) && (flags & DISSECT_IMAGE_NO_PARTITION_TABLE))); |
8c1be37e LP |
332 | |
333 | /* Probes a disk image, and returns information about what it found in *ret. | |
334 | * | |
4623e8e6 LP |
335 | * Returns -ENOPKG if no suitable partition table or file system could be found. |
336 | * Returns -EADDRNOTAVAIL if a root hash was specified but no matching root/verity partitions found. */ | |
337 | ||
89e62e0b | 338 | if (verity && verity->root_hash) { |
aee36b4e LP |
339 | sd_id128_t fsuuid, vuuid; |
340 | ||
341 | /* If a root hash is supplied, then we use the root partition that has a UUID that match the | |
342 | * first 128bit of the root hash. And we use the verity partition that has a UUID that match | |
343 | * the final 128bit. */ | |
4623e8e6 | 344 | |
89e62e0b | 345 | if (verity->root_hash_size < sizeof(sd_id128_t)) |
4623e8e6 LP |
346 | return -EINVAL; |
347 | ||
aee36b4e LP |
348 | memcpy(&fsuuid, verity->root_hash, sizeof(sd_id128_t)); |
349 | memcpy(&vuuid, (const uint8_t*) verity->root_hash + verity->root_hash_size - sizeof(sd_id128_t), sizeof(sd_id128_t)); | |
4623e8e6 | 350 | |
aee36b4e | 351 | if (sd_id128_is_null(fsuuid)) |
4623e8e6 | 352 | return -EINVAL; |
aee36b4e | 353 | if (sd_id128_is_null(vuuid)) |
4623e8e6 | 354 | return -EINVAL; |
aee36b4e LP |
355 | |
356 | /* If the verity data declares it's for the /usr partition, then search for that, in all | |
357 | * other cases assume it's for the root partition. */ | |
358 | if (verity->designator == PARTITION_USR) { | |
359 | usr_uuid = fsuuid; | |
360 | usr_verity_uuid = vuuid; | |
361 | } else { | |
362 | root_uuid = fsuuid; | |
363 | root_verity_uuid = vuuid; | |
364 | } | |
4623e8e6 | 365 | } |
8c1be37e LP |
366 | |
367 | if (fstat(fd, &st) < 0) | |
368 | return -errno; | |
369 | ||
370 | if (!S_ISBLK(st.st_mode)) | |
371 | return -ENOTBLK; | |
372 | ||
373 | b = blkid_new_probe(); | |
374 | if (!b) | |
375 | return -ENOMEM; | |
376 | ||
377 | errno = 0; | |
378 | r = blkid_probe_set_device(b, fd, 0, 0); | |
b382db9f | 379 | if (r != 0) |
66855de7 | 380 | return errno_or_else(ENOMEM); |
8c1be37e | 381 | |
9b6deb03 LP |
382 | if ((flags & DISSECT_IMAGE_GPT_ONLY) == 0) { |
383 | /* Look for file system superblocks, unless we only shall look for GPT partition tables */ | |
384 | blkid_probe_enable_superblocks(b, 1); | |
385 | blkid_probe_set_superblocks_flags(b, BLKID_SUBLKS_TYPE|BLKID_SUBLKS_USAGE); | |
386 | } | |
387 | ||
8c1be37e LP |
388 | blkid_probe_enable_partitions(b, 1); |
389 | blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS); | |
390 | ||
391 | errno = 0; | |
392 | r = blkid_do_safeprobe(b); | |
59ba6d0c LP |
393 | if (IN_SET(r, -2, 1)) |
394 | return log_debug_errno(SYNTHETIC_ERRNO(ENOPKG), "Failed to identify any partition table."); | |
b382db9f | 395 | if (r != 0) |
66855de7 | 396 | return errno_or_else(EIO); |
8c1be37e LP |
397 | |
398 | m = new0(DissectedImage, 1); | |
399 | if (!m) | |
400 | return -ENOMEM; | |
401 | ||
b887c8b8 ZJS |
402 | r = sd_device_new_from_devnum(&d, 'b', st.st_rdev); |
403 | if (r < 0) | |
404 | return r; | |
405 | ||
e7cbe5cb LB |
406 | if ((!(flags & DISSECT_IMAGE_GPT_ONLY) && |
407 | (flags & DISSECT_IMAGE_REQUIRE_ROOT)) || | |
408 | (flags & DISSECT_IMAGE_NO_PARTITION_TABLE)) { | |
9b6deb03 | 409 | const char *usage = NULL; |
8c1be37e | 410 | |
aee36b4e LP |
411 | /* If flags permit this, also allow using non-partitioned single-filesystem images */ |
412 | ||
9b6deb03 LP |
413 | (void) blkid_probe_lookup_value(b, "USAGE", &usage, NULL); |
414 | if (STRPTR_IN_SET(usage, "filesystem", "crypto")) { | |
18d73705 LB |
415 | _cleanup_free_ char *t = NULL, *n = NULL, *o = NULL; |
416 | const char *fstype = NULL, *options = NULL; | |
8c1be37e | 417 | |
9b6deb03 LP |
418 | /* OK, we have found a file system, that's our root partition then. */ |
419 | (void) blkid_probe_lookup_value(b, "TYPE", &fstype, NULL); | |
8c1be37e | 420 | |
9b6deb03 LP |
421 | if (fstype) { |
422 | t = strdup(fstype); | |
423 | if (!t) | |
424 | return -ENOMEM; | |
425 | } | |
426 | ||
54b22b26 LP |
427 | r = device_path_make_major_minor(st.st_mode, st.st_rdev, &n); |
428 | if (r < 0) | |
429 | return r; | |
8c1be37e | 430 | |
e7cbe5cb | 431 | m->single_file_system = true; |
aee36b4e | 432 | m->verity = verity && verity->root_hash && verity->data_path && (verity->designator < 0 || verity->designator == PARTITION_ROOT); |
89e62e0b | 433 | m->can_verity = verity && verity->data_path; |
e7cbe5cb | 434 | |
f5215bc8 | 435 | options = mount_options_from_designator(mount_options, PARTITION_ROOT); |
18d73705 LB |
436 | if (options) { |
437 | o = strdup(options); | |
438 | if (!o) | |
439 | return -ENOMEM; | |
440 | } | |
441 | ||
9b6deb03 LP |
442 | m->partitions[PARTITION_ROOT] = (DissectedPartition) { |
443 | .found = true, | |
e7cbe5cb | 444 | .rw = !m->verity, |
9b6deb03 LP |
445 | .partno = -1, |
446 | .architecture = _ARCHITECTURE_INVALID, | |
1cc6c93a YW |
447 | .fstype = TAKE_PTR(t), |
448 | .node = TAKE_PTR(n), | |
18d73705 | 449 | .mount_options = TAKE_PTR(o), |
9b6deb03 | 450 | }; |
8c1be37e | 451 | |
4db1879a | 452 | m->encrypted = streq_ptr(fstype, "crypto_LUKS"); |
18b5886e | 453 | |
b1806441 LB |
454 | /* Even on a single partition we need to wait for udev to create the |
455 | * /dev/block/X:Y symlink to /dev/loopZ */ | |
456 | r = loop_wait_for_partitions_to_appear(fd, d, 0, flags, &e); | |
457 | if (r < 0) | |
458 | return r; | |
1cc6c93a | 459 | *ret = TAKE_PTR(m); |
8c1be37e | 460 | |
9b6deb03 LP |
461 | return 0; |
462 | } | |
8c1be37e LP |
463 | } |
464 | ||
465 | (void) blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL); | |
466 | if (!pttype) | |
467 | return -ENOPKG; | |
468 | ||
469 | is_gpt = streq_ptr(pttype, "gpt"); | |
470 | is_mbr = streq_ptr(pttype, "dos"); | |
471 | ||
9b6deb03 | 472 | if (!is_gpt && ((flags & DISSECT_IMAGE_GPT_ONLY) || !is_mbr)) |
8c1be37e LP |
473 | return -ENOPKG; |
474 | ||
475 | errno = 0; | |
476 | pl = blkid_probe_get_partitions(b); | |
b382db9f | 477 | if (!pl) |
66855de7 | 478 | return errno_or_else(ENOMEM); |
8c1be37e | 479 | |
052eaf5c | 480 | r = loop_wait_for_partitions_to_appear(fd, d, blkid_partlist_numof_partitions(pl), flags, &e); |
ea887be0 ZJS |
481 | if (r < 0) |
482 | return r; | |
8c1be37e | 483 | |
8437c059 | 484 | FOREACH_DEVICE(e, q) { |
9b6deb03 | 485 | unsigned long long pflags; |
8c1be37e | 486 | blkid_partition pp; |
cde942f6 | 487 | const char *node; |
8c1be37e LP |
488 | dev_t qn; |
489 | int nr; | |
490 | ||
3c1f2cee YW |
491 | r = sd_device_get_devnum(q, &qn); |
492 | if (r < 0) | |
8c1be37e LP |
493 | continue; |
494 | ||
495 | if (st.st_rdev == qn) | |
496 | continue; | |
497 | ||
aae22eb3 LP |
498 | if (!device_is_block(q)) |
499 | continue; | |
500 | ||
cde942f6 | 501 | if (device_is_mmc_special_partition(q)) |
7be1420f LP |
502 | continue; |
503 | ||
3c1f2cee YW |
504 | r = sd_device_get_devname(q, &node); |
505 | if (r < 0) | |
8c1be37e LP |
506 | continue; |
507 | ||
508 | pp = blkid_partlist_devno_to_partition(pl, qn); | |
509 | if (!pp) | |
510 | continue; | |
511 | ||
9b6deb03 | 512 | pflags = blkid_partition_get_flags(pp); |
8c1be37e LP |
513 | |
514 | nr = blkid_partition_get_partno(pp); | |
515 | if (nr < 0) | |
516 | continue; | |
517 | ||
518 | if (is_gpt) { | |
569a0e42 LP |
519 | PartitionDesignator designator = _PARTITION_DESIGNATOR_INVALID; |
520 | int architecture = _ARCHITECTURE_INVALID; | |
4623e8e6 LP |
521 | const char *stype, *sid, *fstype = NULL; |
522 | sd_id128_t type_id, id; | |
8c1be37e LP |
523 | bool rw = true; |
524 | ||
4623e8e6 LP |
525 | sid = blkid_partition_get_uuid(pp); |
526 | if (!sid) | |
527 | continue; | |
528 | if (sd_id128_from_string(sid, &id) < 0) | |
529 | continue; | |
530 | ||
8c1be37e LP |
531 | stype = blkid_partition_get_type_string(pp); |
532 | if (!stype) | |
533 | continue; | |
8c1be37e LP |
534 | if (sd_id128_from_string(stype, &type_id) < 0) |
535 | continue; | |
536 | ||
537 | if (sd_id128_equal(type_id, GPT_HOME)) { | |
a48dd347 | 538 | |
0f7c9a3d LP |
539 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
540 | ||
a48dd347 LP |
541 | if (pflags & GPT_FLAG_NO_AUTO) |
542 | continue; | |
543 | ||
8c1be37e | 544 | designator = PARTITION_HOME; |
9b6deb03 | 545 | rw = !(pflags & GPT_FLAG_READ_ONLY); |
aee36b4e | 546 | |
8c1be37e | 547 | } else if (sd_id128_equal(type_id, GPT_SRV)) { |
a48dd347 | 548 | |
0f7c9a3d LP |
549 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
550 | ||
a48dd347 LP |
551 | if (pflags & GPT_FLAG_NO_AUTO) |
552 | continue; | |
553 | ||
8c1be37e | 554 | designator = PARTITION_SRV; |
9b6deb03 | 555 | rw = !(pflags & GPT_FLAG_READ_ONLY); |
aee36b4e | 556 | |
8c1be37e | 557 | } else if (sd_id128_equal(type_id, GPT_ESP)) { |
a48dd347 | 558 | |
aee36b4e LP |
559 | /* Note that we don't check the GPT_FLAG_NO_AUTO flag for the ESP, as it is |
560 | * not defined there. We instead check the GPT_FLAG_NO_BLOCK_IO_PROTOCOL, as | |
561 | * recommended by the UEFI spec (See "12.3.3 Number and Location of System | |
562 | * Partitions"). */ | |
a48dd347 LP |
563 | |
564 | if (pflags & GPT_FLAG_NO_BLOCK_IO_PROTOCOL) | |
565 | continue; | |
566 | ||
8c1be37e LP |
567 | designator = PARTITION_ESP; |
568 | fstype = "vfat"; | |
a8c47660 LP |
569 | |
570 | } else if (sd_id128_equal(type_id, GPT_XBOOTLDR)) { | |
571 | ||
0f7c9a3d LP |
572 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
573 | ||
a8c47660 LP |
574 | if (pflags & GPT_FLAG_NO_AUTO) |
575 | continue; | |
576 | ||
577 | designator = PARTITION_XBOOTLDR; | |
578 | rw = !(pflags & GPT_FLAG_READ_ONLY); | |
8c1be37e LP |
579 | } |
580 | #ifdef GPT_ROOT_NATIVE | |
581 | else if (sd_id128_equal(type_id, GPT_ROOT_NATIVE)) { | |
4623e8e6 | 582 | |
0f7c9a3d LP |
583 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
584 | ||
a48dd347 LP |
585 | if (pflags & GPT_FLAG_NO_AUTO) |
586 | continue; | |
587 | ||
4623e8e6 LP |
588 | /* If a root ID is specified, ignore everything but the root id */ |
589 | if (!sd_id128_is_null(root_uuid) && !sd_id128_equal(root_uuid, id)) | |
590 | continue; | |
591 | ||
8c1be37e LP |
592 | designator = PARTITION_ROOT; |
593 | architecture = native_architecture(); | |
9b6deb03 | 594 | rw = !(pflags & GPT_FLAG_READ_ONLY); |
aee36b4e | 595 | |
4f8b86e3 | 596 | } else if (sd_id128_equal(type_id, GPT_ROOT_NATIVE_VERITY)) { |
4623e8e6 | 597 | |
0f7c9a3d LP |
598 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
599 | ||
a48dd347 LP |
600 | if (pflags & GPT_FLAG_NO_AUTO) |
601 | continue; | |
602 | ||
4623e8e6 LP |
603 | m->can_verity = true; |
604 | ||
605 | /* Ignore verity unless a root hash is specified */ | |
aee36b4e | 606 | if (sd_id128_is_null(root_verity_uuid) || !sd_id128_equal(root_verity_uuid, id)) |
4623e8e6 LP |
607 | continue; |
608 | ||
609 | designator = PARTITION_ROOT_VERITY; | |
610 | fstype = "DM_verity_hash"; | |
611 | architecture = native_architecture(); | |
612 | rw = false; | |
613 | } | |
614 | #endif | |
8c1be37e LP |
615 | #ifdef GPT_ROOT_SECONDARY |
616 | else if (sd_id128_equal(type_id, GPT_ROOT_SECONDARY)) { | |
4623e8e6 | 617 | |
0f7c9a3d LP |
618 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
619 | ||
a48dd347 LP |
620 | if (pflags & GPT_FLAG_NO_AUTO) |
621 | continue; | |
622 | ||
4623e8e6 LP |
623 | /* If a root ID is specified, ignore everything but the root id */ |
624 | if (!sd_id128_is_null(root_uuid) && !sd_id128_equal(root_uuid, id)) | |
625 | continue; | |
626 | ||
8c1be37e LP |
627 | designator = PARTITION_ROOT_SECONDARY; |
628 | architecture = SECONDARY_ARCHITECTURE; | |
9b6deb03 | 629 | rw = !(pflags & GPT_FLAG_READ_ONLY); |
aee36b4e | 630 | |
4f8b86e3 | 631 | } else if (sd_id128_equal(type_id, GPT_ROOT_SECONDARY_VERITY)) { |
a48dd347 | 632 | |
0f7c9a3d LP |
633 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
634 | ||
a48dd347 LP |
635 | if (pflags & GPT_FLAG_NO_AUTO) |
636 | continue; | |
637 | ||
4623e8e6 LP |
638 | m->can_verity = true; |
639 | ||
640 | /* Ignore verity unless root has is specified */ | |
aee36b4e | 641 | if (sd_id128_is_null(root_verity_uuid) || !sd_id128_equal(root_verity_uuid, id)) |
4623e8e6 LP |
642 | continue; |
643 | ||
644 | designator = PARTITION_ROOT_SECONDARY_VERITY; | |
645 | fstype = "DM_verity_hash"; | |
646 | architecture = SECONDARY_ARCHITECTURE; | |
647 | rw = false; | |
648 | } | |
aee36b4e LP |
649 | #endif |
650 | #ifdef GPT_USR_NATIVE | |
651 | else if (sd_id128_equal(type_id, GPT_USR_NATIVE)) { | |
652 | ||
653 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); | |
654 | ||
655 | if (pflags & GPT_FLAG_NO_AUTO) | |
656 | continue; | |
657 | ||
658 | /* If a usr ID is specified, ignore everything but the usr id */ | |
659 | if (!sd_id128_is_null(usr_uuid) && !sd_id128_equal(usr_uuid, id)) | |
660 | continue; | |
661 | ||
662 | designator = PARTITION_USR; | |
663 | architecture = native_architecture(); | |
664 | rw = !(pflags & GPT_FLAG_READ_ONLY); | |
665 | ||
666 | } else if (sd_id128_equal(type_id, GPT_USR_NATIVE_VERITY)) { | |
667 | ||
668 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); | |
669 | ||
670 | if (pflags & GPT_FLAG_NO_AUTO) | |
671 | continue; | |
672 | ||
673 | m->can_verity = true; | |
674 | ||
675 | /* Ignore verity unless a usr hash is specified */ | |
676 | if (sd_id128_is_null(usr_verity_uuid) || !sd_id128_equal(usr_verity_uuid, id)) | |
677 | continue; | |
678 | ||
679 | designator = PARTITION_USR_VERITY; | |
680 | fstype = "DM_verity_hash"; | |
681 | architecture = native_architecture(); | |
682 | rw = false; | |
683 | } | |
684 | #endif | |
685 | #ifdef GPT_USR_SECONDARY | |
686 | else if (sd_id128_equal(type_id, GPT_USR_SECONDARY)) { | |
687 | ||
688 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); | |
689 | ||
690 | if (pflags & GPT_FLAG_NO_AUTO) | |
691 | continue; | |
692 | ||
693 | /* If a usr ID is specified, ignore everything but the usr id */ | |
694 | if (!sd_id128_is_null(usr_uuid) && !sd_id128_equal(usr_uuid, id)) | |
695 | continue; | |
696 | ||
697 | designator = PARTITION_USR_SECONDARY; | |
698 | architecture = SECONDARY_ARCHITECTURE; | |
699 | rw = !(pflags & GPT_FLAG_READ_ONLY); | |
700 | ||
701 | } else if (sd_id128_equal(type_id, GPT_USR_SECONDARY_VERITY)) { | |
702 | ||
703 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); | |
704 | ||
705 | if (pflags & GPT_FLAG_NO_AUTO) | |
706 | continue; | |
707 | ||
708 | m->can_verity = true; | |
709 | ||
710 | /* Ignore verity unless usr has is specified */ | |
711 | if (sd_id128_is_null(usr_verity_uuid) || !sd_id128_equal(usr_verity_uuid, id)) | |
712 | continue; | |
713 | ||
714 | designator = PARTITION_USR_SECONDARY_VERITY; | |
715 | fstype = "DM_verity_hash"; | |
716 | architecture = SECONDARY_ARCHITECTURE; | |
717 | rw = false; | |
718 | } | |
8c1be37e LP |
719 | #endif |
720 | else if (sd_id128_equal(type_id, GPT_SWAP)) { | |
a48dd347 | 721 | |
0f7c9a3d LP |
722 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO); |
723 | ||
a48dd347 LP |
724 | if (pflags & GPT_FLAG_NO_AUTO) |
725 | continue; | |
726 | ||
8c1be37e LP |
727 | designator = PARTITION_SWAP; |
728 | fstype = "swap"; | |
aee36b4e | 729 | |
8c1be37e LP |
730 | } else if (sd_id128_equal(type_id, GPT_LINUX_GENERIC)) { |
731 | ||
0f7c9a3d LP |
732 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
733 | ||
a48dd347 LP |
734 | if (pflags & GPT_FLAG_NO_AUTO) |
735 | continue; | |
736 | ||
8c1be37e LP |
737 | if (generic_node) |
738 | multiple_generic = true; | |
739 | else { | |
740 | generic_nr = nr; | |
9b6deb03 | 741 | generic_rw = !(pflags & GPT_FLAG_READ_ONLY); |
be30ad41 | 742 | generic_uuid = id; |
8c1be37e LP |
743 | generic_node = strdup(node); |
744 | if (!generic_node) | |
745 | return -ENOMEM; | |
746 | } | |
d4dffb85 LP |
747 | |
748 | } else if (sd_id128_equal(type_id, GPT_TMP)) { | |
749 | ||
0f7c9a3d LP |
750 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
751 | ||
d4dffb85 LP |
752 | if (pflags & GPT_FLAG_NO_AUTO) |
753 | continue; | |
754 | ||
755 | designator = PARTITION_TMP; | |
756 | rw = !(pflags & GPT_FLAG_READ_ONLY); | |
757 | ||
758 | } else if (sd_id128_equal(type_id, GPT_VAR)) { | |
759 | ||
0f7c9a3d LP |
760 | check_partition_flags(node, pflags, GPT_FLAG_NO_AUTO|GPT_FLAG_READ_ONLY); |
761 | ||
d4dffb85 LP |
762 | if (pflags & GPT_FLAG_NO_AUTO) |
763 | continue; | |
764 | ||
765 | if (!FLAGS_SET(flags, DISSECT_IMAGE_RELAX_VAR_CHECK)) { | |
766 | sd_id128_t var_uuid; | |
767 | ||
768 | /* For /var we insist that the uuid of the partition matches the | |
769 | * HMAC-SHA256 of the /var GPT partition type uuid, keyed by machine | |
770 | * ID. Why? Unlike the other partitions /var is inherently | |
771 | * installation specific, hence we need to be careful not to mount it | |
772 | * in the wrong installation. By hashing the partition UUID from | |
773 | * /etc/machine-id we can securely bind the partition to the | |
774 | * installation. */ | |
775 | ||
776 | r = sd_id128_get_machine_app_specific(GPT_VAR, &var_uuid); | |
777 | if (r < 0) | |
778 | return r; | |
779 | ||
780 | if (!sd_id128_equal(var_uuid, id)) { | |
781 | log_debug("Found a /var/ partition, but its UUID didn't match our expectations, ignoring."); | |
782 | continue; | |
783 | } | |
784 | } | |
785 | ||
786 | designator = PARTITION_VAR; | |
787 | rw = !(pflags & GPT_FLAG_READ_ONLY); | |
8c1be37e LP |
788 | } |
789 | ||
790 | if (designator != _PARTITION_DESIGNATOR_INVALID) { | |
18d73705 LB |
791 | _cleanup_free_ char *t = NULL, *n = NULL, *o = NULL; |
792 | const char *options = NULL; | |
8c1be37e LP |
793 | |
794 | /* First one wins */ | |
795 | if (m->partitions[designator].found) | |
796 | continue; | |
797 | ||
798 | if (fstype) { | |
799 | t = strdup(fstype); | |
800 | if (!t) | |
801 | return -ENOMEM; | |
802 | } | |
803 | ||
804 | n = strdup(node); | |
805 | if (!n) | |
806 | return -ENOMEM; | |
807 | ||
f5215bc8 | 808 | options = mount_options_from_designator(mount_options, designator); |
18d73705 LB |
809 | if (options) { |
810 | o = strdup(options); | |
811 | if (!o) | |
812 | return -ENOMEM; | |
813 | } | |
814 | ||
8c1be37e LP |
815 | m->partitions[designator] = (DissectedPartition) { |
816 | .found = true, | |
817 | .partno = nr, | |
818 | .rw = rw, | |
819 | .architecture = architecture, | |
1cc6c93a YW |
820 | .node = TAKE_PTR(n), |
821 | .fstype = TAKE_PTR(t), | |
be30ad41 | 822 | .uuid = id, |
18d73705 | 823 | .mount_options = TAKE_PTR(o), |
8c1be37e | 824 | }; |
8c1be37e LP |
825 | } |
826 | ||
827 | } else if (is_mbr) { | |
828 | ||
a8c47660 | 829 | switch (blkid_partition_get_type(pp)) { |
8c1be37e | 830 | |
a8c47660 LP |
831 | case 0x83: /* Linux partition */ |
832 | ||
833 | if (pflags != 0x80) /* Bootable flag */ | |
834 | continue; | |
8c1be37e | 835 | |
a8c47660 LP |
836 | if (generic_node) |
837 | multiple_generic = true; | |
838 | else { | |
839 | generic_nr = nr; | |
840 | generic_rw = true; | |
841 | generic_node = strdup(node); | |
842 | if (!generic_node) | |
843 | return -ENOMEM; | |
844 | } | |
845 | ||
846 | break; | |
847 | ||
848 | case 0xEA: { /* Boot Loader Spec extended $BOOT partition */ | |
18d73705 | 849 | _cleanup_free_ char *n = NULL, *o = NULL; |
a8c47660 | 850 | sd_id128_t id = SD_ID128_NULL; |
18d73705 | 851 | const char *sid, *options = NULL; |
a8c47660 LP |
852 | |
853 | /* First one wins */ | |
854 | if (m->partitions[PARTITION_XBOOTLDR].found) | |
855 | continue; | |
856 | ||
857 | sid = blkid_partition_get_uuid(pp); | |
858 | if (sid) | |
859 | (void) sd_id128_from_string(sid, &id); | |
860 | ||
861 | n = strdup(node); | |
862 | if (!n) | |
8c1be37e | 863 | return -ENOMEM; |
a8c47660 | 864 | |
f5215bc8 | 865 | options = mount_options_from_designator(mount_options, PARTITION_XBOOTLDR); |
18d73705 LB |
866 | if (options) { |
867 | o = strdup(options); | |
868 | if (!o) | |
869 | return -ENOMEM; | |
870 | } | |
871 | ||
a8c47660 LP |
872 | m->partitions[PARTITION_XBOOTLDR] = (DissectedPartition) { |
873 | .found = true, | |
874 | .partno = nr, | |
875 | .rw = true, | |
876 | .architecture = _ARCHITECTURE_INVALID, | |
877 | .node = TAKE_PTR(n), | |
878 | .uuid = id, | |
18d73705 | 879 | .mount_options = TAKE_PTR(o), |
a8c47660 LP |
880 | }; |
881 | ||
882 | break; | |
883 | }} | |
8c1be37e LP |
884 | } |
885 | } | |
886 | ||
74cb2db9 LP |
887 | if (m->partitions[PARTITION_ROOT].found) { |
888 | /* If we found the primary arch, then invalidate the secondary arch to avoid any ambiguities, | |
889 | * since we never want to mount the secondary arch in this case. */ | |
890 | m->partitions[PARTITION_ROOT_SECONDARY].found = false; | |
891 | m->partitions[PARTITION_ROOT_SECONDARY_VERITY].found = false; | |
aee36b4e LP |
892 | m->partitions[PARTITION_USR_SECONDARY].found = false; |
893 | m->partitions[PARTITION_USR_SECONDARY_VERITY].found = false; | |
74cb2db9 | 894 | } else { |
8c1be37e LP |
895 | /* No root partition found? Then let's see if ther's one for the secondary architecture. And if not |
896 | * either, then check if there's a single generic one, and use that. */ | |
897 | ||
4623e8e6 | 898 | if (m->partitions[PARTITION_ROOT_VERITY].found) |
e0f9e7bd | 899 | return -EADDRNOTAVAIL; |
4623e8e6 | 900 | |
aee36b4e LP |
901 | /* We didn't find a primary architecture root, but we found a primary architecture /usr? Refuse that for now. */ |
902 | if (m->partitions[PARTITION_USR].found || m->partitions[PARTITION_USR_VERITY].found) | |
903 | return -EADDRNOTAVAIL; | |
904 | ||
8c1be37e | 905 | if (m->partitions[PARTITION_ROOT_SECONDARY].found) { |
aee36b4e | 906 | /* Upgrade secondary arch to first */ |
8c1be37e LP |
907 | m->partitions[PARTITION_ROOT] = m->partitions[PARTITION_ROOT_SECONDARY]; |
908 | zero(m->partitions[PARTITION_ROOT_SECONDARY]); | |
4623e8e6 LP |
909 | m->partitions[PARTITION_ROOT_VERITY] = m->partitions[PARTITION_ROOT_SECONDARY_VERITY]; |
910 | zero(m->partitions[PARTITION_ROOT_SECONDARY_VERITY]); | |
911 | ||
aee36b4e LP |
912 | m->partitions[PARTITION_USR] = m->partitions[PARTITION_USR_SECONDARY]; |
913 | zero(m->partitions[PARTITION_USR_SECONDARY]); | |
914 | m->partitions[PARTITION_USR_VERITY] = m->partitions[PARTITION_USR_SECONDARY_VERITY]; | |
915 | zero(m->partitions[PARTITION_USR_SECONDARY_VERITY]); | |
916 | ||
e0f9e7bd | 917 | } else if (flags & DISSECT_IMAGE_REQUIRE_ROOT) { |
18d73705 LB |
918 | _cleanup_free_ char *o = NULL; |
919 | const char *options = NULL; | |
e0f9e7bd | 920 | |
2aed63f4 ZJS |
921 | /* If the root hash was set, then we won't fall back to a generic node, because the |
922 | * root hash decides. */ | |
89e62e0b | 923 | if (verity && verity->root_hash) |
e0f9e7bd | 924 | return -EADDRNOTAVAIL; |
8c1be37e | 925 | |
e0f9e7bd LP |
926 | /* If we didn't find a generic node, then we can't fix this up either */ |
927 | if (!generic_node) | |
928 | return -ENXIO; | |
929 | ||
930 | /* If we didn't find a properly marked root partition, but we did find a single suitable | |
931 | * generic Linux partition, then use this as root partition, if the caller asked for it. */ | |
8c1be37e LP |
932 | if (multiple_generic) |
933 | return -ENOTUNIQ; | |
934 | ||
f5215bc8 | 935 | options = mount_options_from_designator(mount_options, PARTITION_ROOT); |
18d73705 LB |
936 | if (options) { |
937 | o = strdup(options); | |
938 | if (!o) | |
939 | return -ENOMEM; | |
940 | } | |
941 | ||
8c1be37e LP |
942 | m->partitions[PARTITION_ROOT] = (DissectedPartition) { |
943 | .found = true, | |
944 | .rw = generic_rw, | |
945 | .partno = generic_nr, | |
946 | .architecture = _ARCHITECTURE_INVALID, | |
1cc6c93a | 947 | .node = TAKE_PTR(generic_node), |
be30ad41 | 948 | .uuid = generic_uuid, |
18d73705 | 949 | .mount_options = TAKE_PTR(o), |
8c1be37e | 950 | }; |
e0f9e7bd | 951 | } |
8c1be37e LP |
952 | } |
953 | ||
aee36b4e LP |
954 | /* Refuse if we found a verity partition for /usr but no matching file system partition */ |
955 | if (!m->partitions[PARTITION_USR].found && m->partitions[PARTITION_USR_VERITY].found) | |
956 | return -EADDRNOTAVAIL; | |
957 | ||
958 | /* Combinations of verity /usr with verity-less root is OK, but the reverse is not */ | |
c848516f | 959 | if (m->partitions[PARTITION_ROOT_VERITY].found && m->partitions[PARTITION_USR].found && !m->partitions[PARTITION_USR_VERITY].found) |
aee36b4e LP |
960 | return -EADDRNOTAVAIL; |
961 | ||
89e62e0b | 962 | if (verity && verity->root_hash) { |
aee36b4e LP |
963 | if (verity->designator < 0 || verity->designator == PARTITION_ROOT) { |
964 | if (!m->partitions[PARTITION_ROOT_VERITY].found || !m->partitions[PARTITION_ROOT].found) | |
965 | return -EADDRNOTAVAIL; | |
966 | ||
967 | /* If we found a verity setup, then the root partition is necessarily read-only. */ | |
968 | m->partitions[PARTITION_ROOT].rw = false; | |
969 | m->verity = true; | |
970 | } | |
4623e8e6 | 971 | |
aee36b4e LP |
972 | if (verity->designator == PARTITION_USR) { |
973 | if (!m->partitions[PARTITION_USR_VERITY].found || !m->partitions[PARTITION_USR].found) | |
974 | return -EADDRNOTAVAIL; | |
4623e8e6 | 975 | |
aee36b4e LP |
976 | m->partitions[PARTITION_USR].rw = false; |
977 | m->verity = true; | |
978 | } | |
4623e8e6 LP |
979 | } |
980 | ||
18b5886e LP |
981 | blkid_free_probe(b); |
982 | b = NULL; | |
983 | ||
8c1be37e | 984 | /* Fill in file system types if we don't know them yet. */ |
569a0e42 | 985 | for (PartitionDesignator i = 0; i < _PARTITION_DESIGNATOR_MAX; i++) { |
18b5886e | 986 | DissectedPartition *p = m->partitions + i; |
8c1be37e | 987 | |
18b5886e | 988 | if (!p->found) |
8c1be37e LP |
989 | continue; |
990 | ||
18b5886e LP |
991 | if (!p->fstype && p->node) { |
992 | r = probe_filesystem(p->node, &p->fstype); | |
7cc84b2c | 993 | if (r < 0 && r != -EUCLEAN) |
18b5886e | 994 | return r; |
8c1be37e LP |
995 | } |
996 | ||
18b5886e LP |
997 | if (streq_ptr(p->fstype, "crypto_LUKS")) |
998 | m->encrypted = true; | |
896f937f LP |
999 | |
1000 | if (p->fstype && fstype_is_ro(p->fstype)) | |
1001 | p->rw = false; | |
8c1be37e LP |
1002 | } |
1003 | ||
1cc6c93a | 1004 | *ret = TAKE_PTR(m); |
8c1be37e LP |
1005 | return 0; |
1006 | #else | |
1007 | return -EOPNOTSUPP; | |
1008 | #endif | |
1009 | } | |
1010 | ||
1011 | DissectedImage* dissected_image_unref(DissectedImage *m) { | |
8c1be37e LP |
1012 | if (!m) |
1013 | return NULL; | |
1014 | ||
569a0e42 | 1015 | for (PartitionDesignator i = 0; i < _PARTITION_DESIGNATOR_MAX; i++) { |
8c1be37e LP |
1016 | free(m->partitions[i].fstype); |
1017 | free(m->partitions[i].node); | |
18b5886e LP |
1018 | free(m->partitions[i].decrypted_fstype); |
1019 | free(m->partitions[i].decrypted_node); | |
18d73705 | 1020 | free(m->partitions[i].mount_options); |
8c1be37e LP |
1021 | } |
1022 | ||
3b925504 LP |
1023 | free(m->hostname); |
1024 | strv_free(m->machine_info); | |
1025 | strv_free(m->os_release); | |
1026 | ||
5fecf46d | 1027 | return mfree(m); |
8c1be37e LP |
1028 | } |
1029 | ||
18b5886e | 1030 | static int is_loop_device(const char *path) { |
553e15f2 | 1031 | char s[SYS_BLOCK_PATH_MAX("/../loop/")]; |
18b5886e LP |
1032 | struct stat st; |
1033 | ||
1034 | assert(path); | |
1035 | ||
1036 | if (stat(path, &st) < 0) | |
1037 | return -errno; | |
1038 | ||
1039 | if (!S_ISBLK(st.st_mode)) | |
1040 | return -ENOTBLK; | |
1041 | ||
553e15f2 | 1042 | xsprintf_sys_block_path(s, "/loop/", st.st_dev); |
18b5886e LP |
1043 | if (access(s, F_OK) < 0) { |
1044 | if (errno != ENOENT) | |
1045 | return -errno; | |
1046 | ||
1047 | /* The device itself isn't a loop device, but maybe it's a partition and its parent is? */ | |
553e15f2 | 1048 | xsprintf_sys_block_path(s, "/../loop/", st.st_dev); |
18b5886e LP |
1049 | if (access(s, F_OK) < 0) |
1050 | return errno == ENOENT ? false : -errno; | |
1051 | } | |
1052 | ||
1053 | return true; | |
1054 | } | |
1055 | ||
cf32c486 LP |
1056 | static int run_fsck(const char *node, const char *fstype) { |
1057 | int r, exit_status; | |
1058 | pid_t pid; | |
1059 | ||
1060 | assert(node); | |
1061 | assert(fstype); | |
1062 | ||
1063 | r = fsck_exists(fstype); | |
1064 | if (r < 0) { | |
1065 | log_debug_errno(r, "Couldn't determine whether fsck for %s exists, proceeding anyway.", fstype); | |
1066 | return 0; | |
1067 | } | |
1068 | if (r == 0) { | |
1069 | log_debug("Not checking partition %s, as fsck for %s does not exist.", node, fstype); | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | r = safe_fork("(fsck)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_RLIMIT_NOFILE_SAFE|FORK_DEATHSIG|FORK_NULL_STDIO, &pid); | |
1074 | if (r < 0) | |
1075 | return log_debug_errno(r, "Failed to fork off fsck: %m"); | |
1076 | if (r == 0) { | |
1077 | /* Child */ | |
1078 | execl("/sbin/fsck", "/sbin/fsck", "-aT", node, NULL); | |
1079 | log_debug_errno(errno, "Failed to execl() fsck: %m"); | |
1080 | _exit(FSCK_OPERATIONAL_ERROR); | |
1081 | } | |
1082 | ||
1083 | exit_status = wait_for_terminate_and_check("fsck", pid, 0); | |
1084 | if (exit_status < 0) | |
1085 | return log_debug_errno(exit_status, "Failed to fork off /sbin/fsck: %m"); | |
1086 | ||
1087 | if ((exit_status & ~FSCK_ERROR_CORRECTED) != FSCK_SUCCESS) { | |
1088 | log_debug("fsck failed with exit status %i.", exit_status); | |
1089 | ||
1090 | if ((exit_status & (FSCK_SYSTEM_SHOULD_REBOOT|FSCK_ERRORS_LEFT_UNCORRECTED)) != 0) | |
1091 | return log_debug_errno(SYNTHETIC_ERRNO(EUCLEAN), "File system is corrupted, refusing."); | |
1092 | ||
1093 | log_debug("Ignoring fsck error."); | |
1094 | } | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
18b5886e LP |
1099 | static int mount_partition( |
1100 | DissectedPartition *m, | |
1101 | const char *where, | |
1102 | const char *directory, | |
2d3a5a73 | 1103 | uid_t uid_shift, |
18b5886e LP |
1104 | DissectImageFlags flags) { |
1105 | ||
2d3a5a73 LP |
1106 | _cleanup_free_ char *chased = NULL, *options = NULL; |
1107 | const char *p, *node, *fstype; | |
8c1be37e | 1108 | bool rw; |
2eedfd2d | 1109 | int r; |
8c1be37e LP |
1110 | |
1111 | assert(m); | |
1112 | assert(where); | |
1113 | ||
4dc28665 | 1114 | /* Use decrypted node and matching fstype if available, otherwise use the original device */ |
18b5886e | 1115 | node = m->decrypted_node ?: m->node; |
4dc28665 | 1116 | fstype = m->decrypted_node ? m->decrypted_fstype: m->fstype; |
18b5886e | 1117 | |
4dc28665 | 1118 | if (!m->found || !node) |
8c1be37e | 1119 | return 0; |
4dc28665 LP |
1120 | if (!fstype) |
1121 | return -EAFNOSUPPORT; | |
8c1be37e | 1122 | |
fa45d12c | 1123 | /* We are looking at an encrypted partition? This either means stacked encryption, or the caller didn't call dissected_image_decrypt() beforehand. Let's return a recognizable error for this case. */ |
4dc28665 | 1124 | if (streq(fstype, "crypto_LUKS")) |
fa45d12c | 1125 | return -EUNATCH; |
18b5886e LP |
1126 | |
1127 | rw = m->rw && !(flags & DISSECT_IMAGE_READ_ONLY); | |
8c1be37e | 1128 | |
cf32c486 LP |
1129 | if (FLAGS_SET(flags, DISSECT_IMAGE_FSCK) && rw) { |
1130 | r = run_fsck(node, fstype); | |
1131 | if (r < 0) | |
1132 | return r; | |
1133 | } | |
1134 | ||
2eedfd2d | 1135 | if (directory) { |
1f0f82f1 LP |
1136 | if (!FLAGS_SET(flags, DISSECT_IMAGE_READ_ONLY)) { |
1137 | /* Automatically create missing mount points, if necessary. */ | |
1138 | r = mkdir_p_root(where, directory, uid_shift, (gid_t) uid_shift, 0755); | |
1139 | if (r < 0) | |
1140 | return r; | |
1141 | } | |
1142 | ||
a5648b80 | 1143 | r = chase_symlinks(directory, where, CHASE_PREFIX_ROOT, &chased, NULL); |
2eedfd2d LP |
1144 | if (r < 0) |
1145 | return r; | |
1146 | ||
1147 | p = chased; | |
1148 | } else | |
8c1be37e LP |
1149 | p = where; |
1150 | ||
18b5886e | 1151 | /* If requested, turn on discard support. */ |
154d2269 | 1152 | if (fstype_can_discard(fstype) && |
18b5886e | 1153 | ((flags & DISSECT_IMAGE_DISCARD) || |
3afda7c7 | 1154 | ((flags & DISSECT_IMAGE_DISCARD_ON_LOOP) && is_loop_device(m->node) > 0))) { |
2d3a5a73 LP |
1155 | options = strdup("discard"); |
1156 | if (!options) | |
1157 | return -ENOMEM; | |
1158 | } | |
1159 | ||
1160 | if (uid_is_valid(uid_shift) && uid_shift != 0 && fstype_can_uid_gid(fstype)) { | |
1161 | _cleanup_free_ char *uid_option = NULL; | |
1162 | ||
1163 | if (asprintf(&uid_option, "uid=" UID_FMT ",gid=" GID_FMT, uid_shift, (gid_t) uid_shift) < 0) | |
1164 | return -ENOMEM; | |
1165 | ||
1166 | if (!strextend_with_separator(&options, ",", uid_option, NULL)) | |
1167 | return -ENOMEM; | |
1168 | } | |
8c1be37e | 1169 | |
18d73705 LB |
1170 | if (!isempty(m->mount_options)) |
1171 | if (!strextend_with_separator(&options, ",", m->mount_options, NULL)) | |
1172 | return -ENOMEM; | |
1173 | ||
5c05f062 LP |
1174 | if (FLAGS_SET(flags, DISSECT_IMAGE_MKDIR)) { |
1175 | r = mkdir_p(p, 0755); | |
1176 | if (r < 0) | |
1177 | return r; | |
1178 | } | |
1179 | ||
511a8cfe | 1180 | r = mount_nofollow_verbose(LOG_DEBUG, node, p, fstype, MS_NODEV|(rw ? 0 : MS_RDONLY), options); |
d9223c07 LP |
1181 | if (r < 0) |
1182 | return r; | |
1183 | ||
1184 | return 1; | |
8c1be37e LP |
1185 | } |
1186 | ||
2d3a5a73 | 1187 | int dissected_image_mount(DissectedImage *m, const char *where, uid_t uid_shift, DissectImageFlags flags) { |
1f0f82f1 | 1188 | int r, xbootldr_mounted; |
8c1be37e LP |
1189 | |
1190 | assert(m); | |
1191 | assert(where); | |
1192 | ||
fa45d12c LP |
1193 | /* Returns: |
1194 | * | |
1195 | * -ENXIO → No root partition found | |
1196 | * -EMEDIUMTYPE → DISSECT_IMAGE_VALIDATE_OS set but no os-release file found | |
1197 | * -EUNATCH → Encrypted partition found for which no dm-crypt was set up yet | |
1198 | * -EUCLEAN → fsck for file system failed | |
1199 | * -EBUSY → File system already mounted/used elsewhere (kernel) | |
4dc28665 | 1200 | * -EAFNOSUPPORT → File system type not supported or not known |
fa45d12c LP |
1201 | */ |
1202 | ||
8c1be37e LP |
1203 | if (!m->partitions[PARTITION_ROOT].found) |
1204 | return -ENXIO; | |
1205 | ||
2d3a5a73 LP |
1206 | if ((flags & DISSECT_IMAGE_MOUNT_NON_ROOT_ONLY) == 0) { |
1207 | r = mount_partition(m->partitions + PARTITION_ROOT, where, NULL, uid_shift, flags); | |
1208 | if (r < 0) | |
1209 | return r; | |
aee36b4e LP |
1210 | } |
1211 | ||
1212 | /* Mask DISSECT_IMAGE_MKDIR for all subdirs: the idea is that only the top-level mount point is | |
1213 | * created if needed, but the image itself not modified. */ | |
1214 | flags &= ~DISSECT_IMAGE_MKDIR; | |
1215 | ||
1216 | if ((flags & DISSECT_IMAGE_MOUNT_NON_ROOT_ONLY) == 0) { | |
1217 | /* For us mounting root always means mounting /usr as well */ | |
1218 | r = mount_partition(m->partitions + PARTITION_USR, where, "/usr", uid_shift, flags); | |
1219 | if (r < 0) | |
1220 | return r; | |
03bcb6d4 LP |
1221 | |
1222 | if (flags & DISSECT_IMAGE_VALIDATE_OS) { | |
1223 | r = path_is_os_tree(where); | |
1224 | if (r < 0) | |
1225 | return r; | |
1226 | if (r == 0) | |
1227 | return -EMEDIUMTYPE; | |
1228 | } | |
2d3a5a73 LP |
1229 | } |
1230 | ||
705727fd | 1231 | if (flags & DISSECT_IMAGE_MOUNT_ROOT_ONLY) |
2d3a5a73 | 1232 | return 0; |
8c1be37e | 1233 | |
2d3a5a73 | 1234 | r = mount_partition(m->partitions + PARTITION_HOME, where, "/home", uid_shift, flags); |
8c1be37e LP |
1235 | if (r < 0) |
1236 | return r; | |
1237 | ||
2d3a5a73 | 1238 | r = mount_partition(m->partitions + PARTITION_SRV, where, "/srv", uid_shift, flags); |
8c1be37e LP |
1239 | if (r < 0) |
1240 | return r; | |
1241 | ||
d4dffb85 LP |
1242 | r = mount_partition(m->partitions + PARTITION_VAR, where, "/var", uid_shift, flags); |
1243 | if (r < 0) | |
1244 | return r; | |
1245 | ||
1246 | r = mount_partition(m->partitions + PARTITION_TMP, where, "/var/tmp", uid_shift, flags); | |
1247 | if (r < 0) | |
1248 | return r; | |
1249 | ||
1f0f82f1 LP |
1250 | xbootldr_mounted = mount_partition(m->partitions + PARTITION_XBOOTLDR, where, "/boot", uid_shift, flags); |
1251 | if (xbootldr_mounted < 0) | |
1252 | return xbootldr_mounted; | |
d9223c07 | 1253 | |
8c1be37e | 1254 | if (m->partitions[PARTITION_ESP].found) { |
1f0f82f1 LP |
1255 | int esp_done = false; |
1256 | ||
d9223c07 LP |
1257 | /* Mount the ESP to /efi if it exists. If it doesn't exist, use /boot instead, but only if it |
1258 | * exists and is empty, and we didn't already mount the XBOOTLDR partition into it. */ | |
8c1be37e | 1259 | |
a5648b80 | 1260 | r = chase_symlinks("/efi", where, CHASE_PREFIX_ROOT, NULL, NULL); |
1f0f82f1 LP |
1261 | if (r < 0) { |
1262 | if (r != -ENOENT) | |
d9223c07 | 1263 | return r; |
8c1be37e | 1264 | |
1f0f82f1 LP |
1265 | /* /efi doesn't exist. Let's see if /boot is suitable then */ |
1266 | ||
1267 | if (!xbootldr_mounted) { | |
1268 | _cleanup_free_ char *p = NULL; | |
2eedfd2d | 1269 | |
1f0f82f1 LP |
1270 | r = chase_symlinks("/boot", where, CHASE_PREFIX_ROOT, &p, NULL); |
1271 | if (r < 0) { | |
1272 | if (r != -ENOENT) | |
1273 | return r; | |
1274 | } else if (dir_is_empty(p) > 0) { | |
1275 | /* It exists and is an empty directory. Let's mount the ESP there. */ | |
1276 | r = mount_partition(m->partitions + PARTITION_ESP, where, "/boot", uid_shift, flags); | |
1277 | if (r < 0) | |
1278 | return r; | |
1279 | ||
1280 | esp_done = true; | |
1281 | } | |
2eedfd2d | 1282 | } |
8c1be37e | 1283 | } |
1f0f82f1 LP |
1284 | |
1285 | if (!esp_done) { | |
1286 | /* OK, let's mount the ESP now to /efi (possibly creating the dir if missing) */ | |
1287 | ||
1288 | r = mount_partition(m->partitions + PARTITION_ESP, where, "/efi", uid_shift, flags); | |
1289 | if (r < 0) | |
1290 | return r; | |
1291 | } | |
8c1be37e LP |
1292 | } |
1293 | ||
1294 | return 0; | |
1295 | } | |
1296 | ||
af187ab2 LP |
1297 | int dissected_image_mount_and_warn(DissectedImage *m, const char *where, uid_t uid_shift, DissectImageFlags flags) { |
1298 | int r; | |
1299 | ||
1300 | assert(m); | |
1301 | assert(where); | |
1302 | ||
1303 | r = dissected_image_mount(m, where, uid_shift, flags); | |
1304 | if (r == -ENXIO) | |
1305 | return log_error_errno(r, "Not root file system found in image."); | |
1306 | if (r == -EMEDIUMTYPE) | |
1307 | return log_error_errno(r, "No suitable os-release file in image found."); | |
1308 | if (r == -EUNATCH) | |
1309 | return log_error_errno(r, "Encrypted file system discovered, but decryption not requested."); | |
1310 | if (r == -EUCLEAN) | |
1311 | return log_error_errno(r, "File system check on image failed."); | |
1312 | if (r == -EBUSY) | |
1313 | return log_error_errno(r, "File system already mounted elsewhere."); | |
4dc28665 LP |
1314 | if (r == -EAFNOSUPPORT) |
1315 | return log_error_errno(r, "File system type not supported or not known."); | |
af187ab2 LP |
1316 | if (r < 0) |
1317 | return log_error_errno(r, "Failed to mount image: %m"); | |
1318 | ||
1319 | return r; | |
1320 | } | |
1321 | ||
349cc4a5 | 1322 | #if HAVE_LIBCRYPTSETUP |
18b5886e LP |
1323 | typedef struct DecryptedPartition { |
1324 | struct crypt_device *device; | |
1325 | char *name; | |
1326 | bool relinquished; | |
1327 | } DecryptedPartition; | |
1328 | ||
1329 | struct DecryptedImage { | |
1330 | DecryptedPartition *decrypted; | |
1331 | size_t n_decrypted; | |
1332 | size_t n_allocated; | |
1333 | }; | |
1334 | #endif | |
1335 | ||
1336 | DecryptedImage* decrypted_image_unref(DecryptedImage* d) { | |
349cc4a5 | 1337 | #if HAVE_LIBCRYPTSETUP |
18b5886e LP |
1338 | size_t i; |
1339 | int r; | |
1340 | ||
1341 | if (!d) | |
1342 | return NULL; | |
1343 | ||
1344 | for (i = 0; i < d->n_decrypted; i++) { | |
1345 | DecryptedPartition *p = d->decrypted + i; | |
1346 | ||
1347 | if (p->device && p->name && !p->relinquished) { | |
0d12936d | 1348 | r = sym_crypt_deactivate_by_name(p->device, p->name, 0); |
18b5886e LP |
1349 | if (r < 0) |
1350 | log_debug_errno(r, "Failed to deactivate encrypted partition %s", p->name); | |
1351 | } | |
1352 | ||
1353 | if (p->device) | |
0d12936d | 1354 | sym_crypt_free(p->device); |
18b5886e LP |
1355 | free(p->name); |
1356 | } | |
1357 | ||
1358 | free(d); | |
1359 | #endif | |
1360 | return NULL; | |
1361 | } | |
1362 | ||
349cc4a5 | 1363 | #if HAVE_LIBCRYPTSETUP |
4623e8e6 LP |
1364 | |
1365 | static int make_dm_name_and_node(const void *original_node, const char *suffix, char **ret_name, char **ret_node) { | |
1366 | _cleanup_free_ char *name = NULL, *node = NULL; | |
1367 | const char *base; | |
1368 | ||
1369 | assert(original_node); | |
1370 | assert(suffix); | |
1371 | assert(ret_name); | |
1372 | assert(ret_node); | |
1373 | ||
1374 | base = strrchr(original_node, '/'); | |
1375 | if (!base) | |
ac1f3ad0 LB |
1376 | base = original_node; |
1377 | else | |
1378 | base++; | |
4623e8e6 LP |
1379 | if (isempty(base)) |
1380 | return -EINVAL; | |
1381 | ||
1382 | name = strjoin(base, suffix); | |
1383 | if (!name) | |
1384 | return -ENOMEM; | |
1385 | if (!filename_is_valid(name)) | |
1386 | return -EINVAL; | |
1387 | ||
0d12936d | 1388 | node = path_join(sym_crypt_get_dir(), name); |
4623e8e6 LP |
1389 | if (!node) |
1390 | return -ENOMEM; | |
1391 | ||
1cc6c93a YW |
1392 | *ret_name = TAKE_PTR(name); |
1393 | *ret_node = TAKE_PTR(node); | |
4623e8e6 | 1394 | |
4623e8e6 LP |
1395 | return 0; |
1396 | } | |
1397 | ||
18b5886e LP |
1398 | static int decrypt_partition( |
1399 | DissectedPartition *m, | |
1400 | const char *passphrase, | |
1401 | DissectImageFlags flags, | |
1402 | DecryptedImage *d) { | |
1403 | ||
1404 | _cleanup_free_ char *node = NULL, *name = NULL; | |
0d12936d | 1405 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
18b5886e LP |
1406 | int r; |
1407 | ||
1408 | assert(m); | |
1409 | assert(d); | |
1410 | ||
1411 | if (!m->found || !m->node || !m->fstype) | |
1412 | return 0; | |
1413 | ||
1414 | if (!streq(m->fstype, "crypto_LUKS")) | |
1415 | return 0; | |
1416 | ||
bdd73ac5 ZJS |
1417 | if (!passphrase) |
1418 | return -ENOKEY; | |
1419 | ||
0d12936d LP |
1420 | r = dlopen_cryptsetup(); |
1421 | if (r < 0) | |
1422 | return r; | |
1423 | ||
4623e8e6 LP |
1424 | r = make_dm_name_and_node(m->node, "-decrypted", &name, &node); |
1425 | if (r < 0) | |
1426 | return r; | |
18b5886e LP |
1427 | |
1428 | if (!GREEDY_REALLOC0(d->decrypted, d->n_allocated, d->n_decrypted + 1)) | |
1429 | return -ENOMEM; | |
1430 | ||
0d12936d | 1431 | r = sym_crypt_init(&cd, m->node); |
18b5886e | 1432 | if (r < 0) |
715cbb81 | 1433 | return log_debug_errno(r, "Failed to initialize dm-crypt: %m"); |
18b5886e | 1434 | |
efc3b12f | 1435 | cryptsetup_enable_logging(cd); |
1887032f | 1436 | |
0d12936d | 1437 | r = sym_crypt_load(cd, CRYPT_LUKS, NULL); |
294bd454 ZJS |
1438 | if (r < 0) |
1439 | return log_debug_errno(r, "Failed to load LUKS metadata: %m"); | |
18b5886e | 1440 | |
0d12936d LP |
1441 | r = sym_crypt_activate_by_passphrase(cd, name, CRYPT_ANY_SLOT, passphrase, strlen(passphrase), |
1442 | ((flags & DISSECT_IMAGE_READ_ONLY) ? CRYPT_ACTIVATE_READONLY : 0) | | |
1443 | ((flags & DISSECT_IMAGE_DISCARD_ON_CRYPTO) ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0)); | |
294bd454 | 1444 | if (r < 0) { |
715cbb81 | 1445 | log_debug_errno(r, "Failed to activate LUKS device: %m"); |
294bd454 | 1446 | return r == -EPERM ? -EKEYREJECTED : r; |
18b5886e | 1447 | } |
18b5886e | 1448 | |
94344385 LP |
1449 | d->decrypted[d->n_decrypted++] = (DecryptedPartition) { |
1450 | .name = TAKE_PTR(name), | |
1451 | .device = TAKE_PTR(cd), | |
1452 | }; | |
18b5886e | 1453 | |
1cc6c93a | 1454 | m->decrypted_node = TAKE_PTR(node); |
18b5886e LP |
1455 | |
1456 | return 0; | |
4623e8e6 LP |
1457 | } |
1458 | ||
89e62e0b LP |
1459 | static int verity_can_reuse( |
1460 | const VeritySettings *verity, | |
1461 | const char *name, | |
1462 | struct crypt_device **ret_cd) { | |
1463 | ||
ac1f3ad0 LB |
1464 | /* If the same volume was already open, check that the root hashes match, and reuse it if they do */ |
1465 | _cleanup_free_ char *root_hash_existing = NULL; | |
0d12936d | 1466 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
ac1f3ad0 | 1467 | struct crypt_params_verity crypt_params = {}; |
89e62e0b | 1468 | size_t root_hash_existing_size; |
ac1f3ad0 LB |
1469 | int r; |
1470 | ||
89e62e0b LP |
1471 | assert(verity); |
1472 | assert(name); | |
ac1f3ad0 LB |
1473 | assert(ret_cd); |
1474 | ||
0d12936d | 1475 | r = sym_crypt_init_by_name(&cd, name); |
ac1f3ad0 LB |
1476 | if (r < 0) |
1477 | return log_debug_errno(r, "Error opening verity device, crypt_init_by_name failed: %m"); | |
0d12936d LP |
1478 | |
1479 | r = sym_crypt_get_verity_info(cd, &crypt_params); | |
ac1f3ad0 LB |
1480 | if (r < 0) |
1481 | return log_debug_errno(r, "Error opening verity device, crypt_get_verity_info failed: %m"); | |
0d12936d | 1482 | |
89e62e0b LP |
1483 | root_hash_existing_size = verity->root_hash_size; |
1484 | root_hash_existing = malloc0(root_hash_existing_size); | |
ac1f3ad0 LB |
1485 | if (!root_hash_existing) |
1486 | return -ENOMEM; | |
0d12936d LP |
1487 | |
1488 | r = sym_crypt_volume_key_get(cd, CRYPT_ANY_SLOT, root_hash_existing, &root_hash_existing_size, NULL, 0); | |
ac1f3ad0 LB |
1489 | if (r < 0) |
1490 | return log_debug_errno(r, "Error opening verity device, crypt_volume_key_get failed: %m"); | |
89e62e0b LP |
1491 | if (verity->root_hash_size != root_hash_existing_size || |
1492 | memcmp(root_hash_existing, verity->root_hash, verity->root_hash_size) != 0) | |
ac1f3ad0 | 1493 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Error opening verity device, it already exists but root hashes are different."); |
89e62e0b | 1494 | |
ac1f3ad0 | 1495 | #if HAVE_CRYPT_ACTIVATE_BY_SIGNED_KEY |
89e62e0b LP |
1496 | /* Ensure that, if signatures are supported, we only reuse the device if the previous mount used the |
1497 | * same settings, so that a previous unsigned mount will not be reused if the user asks to use | |
1498 | * signing for the new one, and viceversa. */ | |
1499 | if (!!verity->root_hash_sig != !!(crypt_params.flags & CRYPT_VERITY_ROOT_HASH_SIGNATURE)) | |
ac1f3ad0 LB |
1500 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Error opening verity device, it already exists but signature settings are not the same."); |
1501 | #endif | |
1502 | ||
1503 | *ret_cd = TAKE_PTR(cd); | |
1504 | return 0; | |
1505 | } | |
1506 | ||
1507 | static inline void dm_deferred_remove_clean(char *name) { | |
1508 | if (!name) | |
1509 | return; | |
0d12936d LP |
1510 | |
1511 | (void) sym_crypt_deactivate_by_name(NULL, name, CRYPT_DEACTIVATE_DEFERRED); | |
ac1f3ad0 LB |
1512 | free(name); |
1513 | } | |
1514 | DEFINE_TRIVIAL_CLEANUP_FUNC(char *, dm_deferred_remove_clean); | |
1515 | ||
4623e8e6 | 1516 | static int verity_partition( |
aee36b4e | 1517 | PartitionDesignator designator, |
4623e8e6 LP |
1518 | DissectedPartition *m, |
1519 | DissectedPartition *v, | |
89e62e0b | 1520 | const VeritySettings *verity, |
4623e8e6 LP |
1521 | DissectImageFlags flags, |
1522 | DecryptedImage *d) { | |
1523 | ||
0d12936d | 1524 | _cleanup_(sym_crypt_freep) struct crypt_device *cd = NULL; |
ac1f3ad0 | 1525 | _cleanup_(dm_deferred_remove_cleanp) char *restore_deferred_remove = NULL; |
89e62e0b | 1526 | _cleanup_free_ char *node = NULL, *name = NULL; |
4623e8e6 LP |
1527 | int r; |
1528 | ||
1529 | assert(m); | |
89e62e0b | 1530 | assert(v || (verity && verity->data_path)); |
4623e8e6 | 1531 | |
89e62e0b | 1532 | if (!verity || !verity->root_hash) |
4623e8e6 | 1533 | return 0; |
aee36b4e LP |
1534 | if (!((verity->designator < 0 && designator == PARTITION_ROOT) || |
1535 | (verity->designator == designator))) | |
1536 | return 0; | |
4623e8e6 LP |
1537 | |
1538 | if (!m->found || !m->node || !m->fstype) | |
1539 | return 0; | |
89e62e0b | 1540 | if (!verity->data_path) { |
e7cbe5cb LB |
1541 | if (!v->found || !v->node || !v->fstype) |
1542 | return 0; | |
4623e8e6 | 1543 | |
e7cbe5cb LB |
1544 | if (!streq(v->fstype, "DM_verity_hash")) |
1545 | return 0; | |
1546 | } | |
4623e8e6 | 1547 | |
0d12936d LP |
1548 | r = dlopen_cryptsetup(); |
1549 | if (r < 0) | |
1550 | return r; | |
1551 | ||
ac1f3ad0 LB |
1552 | if (FLAGS_SET(flags, DISSECT_IMAGE_VERITY_SHARE)) { |
1553 | /* Use the roothash, which is unique per volume, as the device node name, so that it can be reused */ | |
1554 | _cleanup_free_ char *root_hash_encoded = NULL; | |
0d12936d | 1555 | |
89e62e0b | 1556 | root_hash_encoded = hexmem(verity->root_hash, verity->root_hash_size); |
ac1f3ad0 LB |
1557 | if (!root_hash_encoded) |
1558 | return -ENOMEM; | |
aee36b4e | 1559 | |
ac1f3ad0 LB |
1560 | r = make_dm_name_and_node(root_hash_encoded, "-verity", &name, &node); |
1561 | } else | |
1562 | r = make_dm_name_and_node(m->node, "-verity", &name, &node); | |
4623e8e6 LP |
1563 | if (r < 0) |
1564 | return r; | |
1565 | ||
89e62e0b | 1566 | r = sym_crypt_init(&cd, verity->data_path ?: v->node); |
4623e8e6 LP |
1567 | if (r < 0) |
1568 | return r; | |
1569 | ||
efc3b12f | 1570 | cryptsetup_enable_logging(cd); |
1887032f | 1571 | |
0d12936d | 1572 | r = sym_crypt_load(cd, CRYPT_VERITY, NULL); |
4623e8e6 | 1573 | if (r < 0) |
294bd454 | 1574 | return r; |
4623e8e6 | 1575 | |
0d12936d | 1576 | r = sym_crypt_set_data_device(cd, m->node); |
4623e8e6 | 1577 | if (r < 0) |
294bd454 | 1578 | return r; |
4623e8e6 | 1579 | |
ac1f3ad0 LB |
1580 | if (!GREEDY_REALLOC0(d->decrypted, d->n_allocated, d->n_decrypted + 1)) |
1581 | return -ENOMEM; | |
1582 | ||
1583 | /* If activating fails because the device already exists, check the metadata and reuse it if it matches. | |
1584 | * In case of ENODEV/ENOENT, which can happen if another process is activating at the exact same time, | |
1585 | * retry a few times before giving up. */ | |
1586 | for (unsigned i = 0; i < N_DEVICE_NODE_LIST_ATTEMPTS; i++) { | |
89e62e0b | 1587 | if (verity->root_hash_sig) { |
c2923fdc | 1588 | #if HAVE_CRYPT_ACTIVATE_BY_SIGNED_KEY |
89e62e0b LP |
1589 | r = sym_crypt_activate_by_signed_key( |
1590 | cd, | |
1591 | name, | |
1592 | verity->root_hash, | |
1593 | verity->root_hash_size, | |
1594 | verity->root_hash_sig, | |
1595 | verity->root_hash_sig_size, | |
1596 | CRYPT_ACTIVATE_READONLY); | |
ac1f3ad0 | 1597 | #else |
22043172 LP |
1598 | r = log_debug_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), |
1599 | "Activation of verity device with signature requested, but not supported by %s due to missing crypt_activate_by_signed_key().", program_invocation_short_name); | |
ac1f3ad0 LB |
1600 | #endif |
1601 | } else | |
89e62e0b LP |
1602 | r = sym_crypt_activate_by_volume_key( |
1603 | cd, | |
1604 | name, | |
1605 | verity->root_hash, | |
1606 | verity->root_hash_size, | |
1607 | CRYPT_ACTIVATE_READONLY); | |
ac1f3ad0 LB |
1608 | /* libdevmapper can return EINVAL when the device is already in the activation stage. |
1609 | * There's no way to distinguish this situation from a genuine error due to invalid | |
2aed63f4 | 1610 | * parameters, so immediately fall back to activating the device with a unique name. |
89e62e0b LP |
1611 | * Improvements in libcrypsetup can ensure this never happens: |
1612 | * https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/96 */ | |
ac1f3ad0 | 1613 | if (r == -EINVAL && FLAGS_SET(flags, DISSECT_IMAGE_VERITY_SHARE)) |
aee36b4e | 1614 | return verity_partition(designator, m, v, verity, flags & ~DISSECT_IMAGE_VERITY_SHARE, d); |
9ecb5c10 | 1615 | if (!IN_SET(r, |
22043172 | 1616 | 0, /* Success */ |
9ecb5c10 | 1617 | -EEXIST, /* Volume is already open and ready to be used */ |
22043172 LP |
1618 | -EBUSY, /* Volume is being opened but not ready, crypt_init_by_name can fetch details */ |
1619 | -ENODEV /* Volume is being opened but not ready, crypt_init_by_name would fail, try to open again */)) | |
ac1f3ad0 | 1620 | return r; |
9ecb5c10 | 1621 | if (IN_SET(r, -EEXIST, -EBUSY)) { |
ac1f3ad0 | 1622 | struct crypt_device *existing_cd = NULL; |
c2923fdc | 1623 | |
ac1f3ad0 LB |
1624 | if (!restore_deferred_remove){ |
1625 | /* To avoid races, disable automatic removal on umount while setting up the new device. Restore it on failure. */ | |
1626 | r = dm_deferred_remove_cancel(name); | |
9ecb5c10 LB |
1627 | /* If activation returns EBUSY there might be no deferred removal to cancel, that's fine */ |
1628 | if (r < 0 && r != -ENXIO) | |
ac1f3ad0 | 1629 | return log_debug_errno(r, "Disabling automated deferred removal for verity device %s failed: %m", node); |
9ecb5c10 LB |
1630 | if (r == 0) { |
1631 | restore_deferred_remove = strdup(name); | |
1632 | if (!restore_deferred_remove) | |
1633 | return -ENOMEM; | |
1634 | } | |
ac1f3ad0 | 1635 | } |
c2923fdc | 1636 | |
89e62e0b | 1637 | r = verity_can_reuse(verity, name, &existing_cd); |
ac1f3ad0 LB |
1638 | /* Same as above, -EINVAL can randomly happen when it actually means -EEXIST */ |
1639 | if (r == -EINVAL && FLAGS_SET(flags, DISSECT_IMAGE_VERITY_SHARE)) | |
aee36b4e | 1640 | return verity_partition(designator, m, v, verity, flags & ~DISSECT_IMAGE_VERITY_SHARE, d); |
9ecb5c10 | 1641 | if (!IN_SET(r, 0, -ENODEV, -ENOENT, -EBUSY)) |
ac1f3ad0 LB |
1642 | return log_debug_errno(r, "Checking whether existing verity device %s can be reused failed: %m", node); |
1643 | if (r == 0) { | |
c419b6f0 LB |
1644 | /* devmapper might say that the device exists, but the devlink might not yet have been |
1645 | * created. Check and wait for the udev event in that case. */ | |
1646 | r = device_wait_for_devlink(node, "block", 100 * USEC_PER_MSEC, NULL); | |
1647 | /* Fallback to activation with a unique device if it's taking too long */ | |
1648 | if (r == -ETIMEDOUT) | |
1649 | break; | |
1650 | if (r < 0) | |
1651 | return r; | |
1652 | ||
ac1f3ad0 | 1653 | if (cd) |
0d12936d | 1654 | sym_crypt_free(cd); |
ac1f3ad0 LB |
1655 | cd = existing_cd; |
1656 | } | |
c2923fdc | 1657 | } |
ac1f3ad0 LB |
1658 | if (r == 0) |
1659 | break; | |
ecab4c47 LB |
1660 | |
1661 | /* Device is being opened by another process, but it has not finished yet, yield for 2ms */ | |
1662 | (void) usleep(2 * USEC_PER_MSEC); | |
ac1f3ad0 LB |
1663 | } |
1664 | ||
ac1f3ad0 LB |
1665 | /* An existing verity device was reported by libcryptsetup/libdevmapper, but we can't use it at this time. |
1666 | * Fall back to activating it with a unique device name. */ | |
1667 | if (r != 0 && FLAGS_SET(flags, DISSECT_IMAGE_VERITY_SHARE)) | |
aee36b4e | 1668 | return verity_partition(designator, m, v, verity, flags & ~DISSECT_IMAGE_VERITY_SHARE, d); |
ac1f3ad0 LB |
1669 | |
1670 | /* Everything looks good and we'll be able to mount the device, so deferred remove will be re-enabled at that point. */ | |
1671 | restore_deferred_remove = mfree(restore_deferred_remove); | |
4623e8e6 | 1672 | |
94344385 LP |
1673 | d->decrypted[d->n_decrypted++] = (DecryptedPartition) { |
1674 | .name = TAKE_PTR(name), | |
1675 | .device = TAKE_PTR(cd), | |
1676 | }; | |
4623e8e6 | 1677 | |
1cc6c93a | 1678 | m->decrypted_node = TAKE_PTR(node); |
4623e8e6 LP |
1679 | |
1680 | return 0; | |
18b5886e LP |
1681 | } |
1682 | #endif | |
1683 | ||
1684 | int dissected_image_decrypt( | |
1685 | DissectedImage *m, | |
1686 | const char *passphrase, | |
89e62e0b | 1687 | const VeritySettings *verity, |
18b5886e LP |
1688 | DissectImageFlags flags, |
1689 | DecryptedImage **ret) { | |
1690 | ||
349cc4a5 | 1691 | #if HAVE_LIBCRYPTSETUP |
49b5b3b4 | 1692 | _cleanup_(decrypted_image_unrefp) DecryptedImage *d = NULL; |
18b5886e LP |
1693 | int r; |
1694 | #endif | |
1695 | ||
1696 | assert(m); | |
89e62e0b | 1697 | assert(!verity || verity->root_hash || verity->root_hash_size == 0); |
18b5886e LP |
1698 | |
1699 | /* Returns: | |
1700 | * | |
1701 | * = 0 → There was nothing to decrypt | |
1702 | * > 0 → Decrypted successfully | |
d1c536f5 | 1703 | * -ENOKEY → There's something to decrypt but no key was supplied |
18b5886e LP |
1704 | * -EKEYREJECTED → Passed key was not correct |
1705 | */ | |
1706 | ||
89e62e0b | 1707 | if (verity && verity->root_hash && verity->root_hash_size < sizeof(sd_id128_t)) |
4623e8e6 LP |
1708 | return -EINVAL; |
1709 | ||
1710 | if (!m->encrypted && !m->verity) { | |
18b5886e LP |
1711 | *ret = NULL; |
1712 | return 0; | |
1713 | } | |
1714 | ||
349cc4a5 | 1715 | #if HAVE_LIBCRYPTSETUP |
18b5886e LP |
1716 | d = new0(DecryptedImage, 1); |
1717 | if (!d) | |
1718 | return -ENOMEM; | |
1719 | ||
569a0e42 | 1720 | for (PartitionDesignator i = 0; i < _PARTITION_DESIGNATOR_MAX; i++) { |
18b5886e | 1721 | DissectedPartition *p = m->partitions + i; |
22043172 | 1722 | PartitionDesignator k; |
18b5886e LP |
1723 | |
1724 | if (!p->found) | |
1725 | continue; | |
1726 | ||
1727 | r = decrypt_partition(p, passphrase, flags, d); | |
1728 | if (r < 0) | |
1729 | return r; | |
1730 | ||
4623e8e6 LP |
1731 | k = PARTITION_VERITY_OF(i); |
1732 | if (k >= 0) { | |
aee36b4e | 1733 | r = verity_partition(i, p, m->partitions + k, verity, flags | DISSECT_IMAGE_VERITY_SHARE, d); |
4623e8e6 LP |
1734 | if (r < 0) |
1735 | return r; | |
1736 | } | |
1737 | ||
18b5886e LP |
1738 | if (!p->decrypted_fstype && p->decrypted_node) { |
1739 | r = probe_filesystem(p->decrypted_node, &p->decrypted_fstype); | |
7cc84b2c | 1740 | if (r < 0 && r != -EUCLEAN) |
18b5886e LP |
1741 | return r; |
1742 | } | |
1743 | } | |
1744 | ||
1cc6c93a | 1745 | *ret = TAKE_PTR(d); |
18b5886e LP |
1746 | |
1747 | return 1; | |
1748 | #else | |
1749 | return -EOPNOTSUPP; | |
1750 | #endif | |
1751 | } | |
1752 | ||
1753 | int dissected_image_decrypt_interactively( | |
1754 | DissectedImage *m, | |
1755 | const char *passphrase, | |
89e62e0b | 1756 | const VeritySettings *verity, |
18b5886e LP |
1757 | DissectImageFlags flags, |
1758 | DecryptedImage **ret) { | |
1759 | ||
1760 | _cleanup_strv_free_erase_ char **z = NULL; | |
1761 | int n = 3, r; | |
1762 | ||
1763 | if (passphrase) | |
1764 | n--; | |
1765 | ||
1766 | for (;;) { | |
89e62e0b | 1767 | r = dissected_image_decrypt(m, passphrase, verity, flags, ret); |
18b5886e LP |
1768 | if (r >= 0) |
1769 | return r; | |
1770 | if (r == -EKEYREJECTED) | |
1771 | log_error_errno(r, "Incorrect passphrase, try again!"); | |
fc95c359 YW |
1772 | else if (r != -ENOKEY) |
1773 | return log_error_errno(r, "Failed to decrypt image: %m"); | |
18b5886e | 1774 | |
baaa35ad ZJS |
1775 | if (--n < 0) |
1776 | return log_error_errno(SYNTHETIC_ERRNO(EKEYREJECTED), | |
1777 | "Too many retries."); | |
18b5886e LP |
1778 | |
1779 | z = strv_free(z); | |
1780 | ||
a1c111c2 | 1781 | r = ask_password_auto("Please enter image passphrase:", NULL, "dissect", "dissect", USEC_INFINITY, 0, &z); |
18b5886e LP |
1782 | if (r < 0) |
1783 | return log_error_errno(r, "Failed to query for passphrase: %m"); | |
1784 | ||
1785 | passphrase = z[0]; | |
1786 | } | |
1787 | } | |
1788 | ||
18b5886e LP |
1789 | int decrypted_image_relinquish(DecryptedImage *d) { |
1790 | ||
349cc4a5 | 1791 | #if HAVE_LIBCRYPTSETUP |
18b5886e LP |
1792 | size_t i; |
1793 | int r; | |
1794 | #endif | |
1795 | ||
1796 | assert(d); | |
1797 | ||
1798 | /* Turns on automatic removal after the last use ended for all DM devices of this image, and sets a boolean so | |
1799 | * that we don't clean it up ourselves either anymore */ | |
1800 | ||
349cc4a5 | 1801 | #if HAVE_LIBCRYPTSETUP |
18b5886e LP |
1802 | for (i = 0; i < d->n_decrypted; i++) { |
1803 | DecryptedPartition *p = d->decrypted + i; | |
1804 | ||
1805 | if (p->relinquished) | |
1806 | continue; | |
1807 | ||
0d12936d | 1808 | r = sym_crypt_deactivate_by_name(NULL, p->name, CRYPT_DEACTIVATE_DEFERRED); |
18b5886e LP |
1809 | if (r < 0) |
1810 | return log_debug_errno(r, "Failed to mark %s for auto-removal: %m", p->name); | |
1811 | ||
1812 | p->relinquished = true; | |
1813 | } | |
1814 | #endif | |
1815 | ||
1816 | return 0; | |
1817 | } | |
1818 | ||
89e62e0b LP |
1819 | static char *build_auxiliary_path(const char *image, const char *suffix) { |
1820 | const char *e; | |
1821 | char *n; | |
1822 | ||
1823 | assert(image); | |
1824 | assert(suffix); | |
1825 | ||
1826 | e = endswith(image, ".raw"); | |
1827 | if (!e) | |
1828 | return strjoin(e, suffix); | |
1829 | ||
1830 | n = new(char, e - image + strlen(suffix) + 1); | |
1831 | if (!n) | |
1832 | return NULL; | |
1833 | ||
1834 | strcpy(mempcpy(n, image, e - image), suffix); | |
1835 | return n; | |
1836 | } | |
1837 | ||
1838 | void verity_settings_done(VeritySettings *v) { | |
1839 | assert(v); | |
1840 | ||
1841 | v->root_hash = mfree(v->root_hash); | |
1842 | v->root_hash_size = 0; | |
1843 | ||
1844 | v->root_hash_sig = mfree(v->root_hash_sig); | |
1845 | v->root_hash_sig_size = 0; | |
1846 | ||
1847 | v->data_path = mfree(v->data_path); | |
1848 | } | |
1849 | ||
1850 | int verity_settings_load( | |
1851 | VeritySettings *verity, | |
f5ea63a5 LP |
1852 | const char *image, |
1853 | const char *root_hash_path, | |
89e62e0b LP |
1854 | const char *root_hash_sig_path) { |
1855 | ||
1856 | _cleanup_free_ void *root_hash = NULL, *root_hash_sig = NULL; | |
1857 | size_t root_hash_size = 0, root_hash_sig_size = 0; | |
1858 | _cleanup_free_ char *verity_data_path = NULL; | |
aee36b4e | 1859 | PartitionDesignator designator; |
78ebe980 LP |
1860 | int r; |
1861 | ||
89e62e0b | 1862 | assert(verity); |
78ebe980 | 1863 | assert(image); |
aee36b4e | 1864 | assert(verity->designator < 0 || IN_SET(verity->designator, PARTITION_ROOT, PARTITION_USR)); |
78ebe980 | 1865 | |
89e62e0b LP |
1866 | /* If we are asked to load the root hash for a device node, exit early */ |
1867 | if (is_device_path(image)) | |
78ebe980 | 1868 | return 0; |
78ebe980 | 1869 | |
aee36b4e LP |
1870 | designator = verity->designator; |
1871 | ||
89e62e0b | 1872 | /* We only fill in what isn't already filled in */ |
c2923fdc | 1873 | |
89e62e0b | 1874 | if (!verity->root_hash) { |
e7cbe5cb | 1875 | _cleanup_free_ char *text = NULL; |
e7cbe5cb | 1876 | |
0389f4fa | 1877 | if (root_hash_path) { |
aee36b4e | 1878 | /* If explicitly specified it takes precedence */ |
0389f4fa LB |
1879 | r = read_one_line_file(root_hash_path, &text); |
1880 | if (r < 0) | |
e7cbe5cb | 1881 | return r; |
aee36b4e LP |
1882 | |
1883 | if (designator < 0) | |
1884 | designator = PARTITION_ROOT; | |
0389f4fa | 1885 | } else { |
aee36b4e LP |
1886 | /* Otherwise look for xattr and separate file, and first for the data for root and if |
1887 | * that doesn't exist for /usr */ | |
0389f4fa | 1888 | |
aee36b4e LP |
1889 | if (designator < 0 || designator == PARTITION_ROOT) { |
1890 | r = getxattr_malloc(image, "user.verity.roothash", &text, true); | |
1891 | if (r < 0) { | |
1892 | _cleanup_free_ char *p = NULL; | |
78ebe980 | 1893 | |
aee36b4e LP |
1894 | if (!IN_SET(r, -ENODATA, -ENOENT) && !ERRNO_IS_NOT_SUPPORTED(r)) |
1895 | return r; | |
e7cbe5cb | 1896 | |
aee36b4e LP |
1897 | p = build_auxiliary_path(image, ".roothash"); |
1898 | if (!p) | |
1899 | return -ENOMEM; | |
1900 | ||
1901 | r = read_one_line_file(p, &text); | |
1902 | if (r < 0 && r != -ENOENT) | |
1903 | return r; | |
1904 | } | |
1905 | ||
1906 | if (text) | |
1907 | designator = PARTITION_ROOT; | |
1908 | } | |
1909 | ||
1910 | if (!text && (designator < 0 || designator == PARTITION_USR)) { | |
1911 | /* So in the "roothash" xattr/file name above the "root" of course primarily | |
1912 | * refers to the root of the Verity Merkle tree. But coincidentally it also | |
1913 | * is the hash for the *root* file system, i.e. the "root" neatly refers to | |
1914 | * two distinct concepts called "root". Taking benefit of this happy | |
1915 | * coincidence we call the file with the root hash for the /usr/ file system | |
1916 | * `usrhash`, because `usrroothash` or `rootusrhash` would just be too | |
1917 | * confusing. We thus drop the reference to the root of the Merkle tree, and | |
1918 | * just indicate which file system it's about. */ | |
1919 | r = getxattr_malloc(image, "user.verity.usrhash", &text, true); | |
1920 | if (r < 0) { | |
1921 | _cleanup_free_ char *p = NULL; | |
1922 | ||
1923 | if (!IN_SET(r, -ENODATA, -ENOENT) && !ERRNO_IS_NOT_SUPPORTED(r)) | |
1924 | return r; | |
1925 | ||
1926 | p = build_auxiliary_path(image, ".usrhash"); | |
1927 | if (!p) | |
1928 | return -ENOMEM; | |
1929 | ||
1930 | r = read_one_line_file(p, &text); | |
1931 | if (r < 0 && r != -ENOENT) | |
1932 | return r; | |
1933 | } | |
1934 | ||
1935 | if (text) | |
1936 | designator = PARTITION_USR; | |
0389f4fa | 1937 | } |
e7cbe5cb LB |
1938 | } |
1939 | ||
1940 | if (text) { | |
89e62e0b | 1941 | r = unhexmem(text, strlen(text), &root_hash, &root_hash_size); |
e7cbe5cb LB |
1942 | if (r < 0) |
1943 | return r; | |
89e62e0b | 1944 | if (root_hash_size < sizeof(sd_id128_t)) |
e7cbe5cb LB |
1945 | return -EINVAL; |
1946 | } | |
1947 | } | |
1948 | ||
aee36b4e LP |
1949 | if (verity->root_hash && !verity->root_hash_sig) { |
1950 | if (root_hash_sig_path) { | |
1951 | r = read_full_file_full(AT_FDCWD, root_hash_sig_path, 0, (char**) &root_hash_sig, &root_hash_sig_size); | |
1952 | if (r < 0 && r != -ENOENT) | |
1953 | return r; | |
1954 | ||
1955 | if (designator < 0) | |
1956 | designator = PARTITION_ROOT; | |
1957 | } else { | |
1958 | if (designator < 0 || designator == PARTITION_ROOT) { | |
1959 | _cleanup_free_ char *p = NULL; | |
1960 | ||
1961 | /* Follow naming convention recommended by the relevant RFC: | |
1962 | * https://tools.ietf.org/html/rfc5751#section-3.2.1 */ | |
1963 | p = build_auxiliary_path(image, ".roothash.p7s"); | |
1964 | if (!p) | |
1965 | return -ENOMEM; | |
89e62e0b | 1966 | |
7025fa8b | 1967 | r = read_full_file_full(AT_FDCWD, p, 0, (char**) &root_hash_sig, &root_hash_sig_size); |
aee36b4e LP |
1968 | if (r < 0 && r != -ENOENT) |
1969 | return r; | |
1970 | if (r >= 0) | |
1971 | designator = PARTITION_ROOT; | |
1972 | } | |
1973 | ||
1974 | if (!root_hash_sig && (designator < 0 || designator == PARTITION_USR)) { | |
1975 | _cleanup_free_ char *p = NULL; | |
1976 | ||
1977 | p = build_auxiliary_path(image, ".usrhash.p7s"); | |
1978 | if (!p) | |
1979 | return -ENOMEM; | |
89e62e0b | 1980 | |
7025fa8b | 1981 | r = read_full_file_full(AT_FDCWD, p, 0, (char**) &root_hash_sig, &root_hash_sig_size); |
aee36b4e LP |
1982 | if (r < 0 && r != -ENOENT) |
1983 | return r; | |
1984 | if (r >= 0) | |
1985 | designator = PARTITION_USR; | |
1986 | } | |
89e62e0b LP |
1987 | } |
1988 | ||
aee36b4e | 1989 | if (root_hash_sig && root_hash_sig_size == 0) /* refuse empty size signatures */ |
89e62e0b LP |
1990 | return -EINVAL; |
1991 | } | |
1992 | ||
1993 | if (!verity->data_path) { | |
1994 | _cleanup_free_ char *p = NULL; | |
1995 | ||
1996 | p = build_auxiliary_path(image, ".verity"); | |
1997 | if (!p) | |
1998 | return -ENOMEM; | |
1999 | ||
2000 | if (access(p, F_OK) < 0) { | |
2001 | if (errno != ENOENT) | |
2002 | return -errno; | |
2003 | } else | |
2004 | verity_data_path = TAKE_PTR(p); | |
2005 | } | |
2006 | ||
2007 | if (root_hash) { | |
2008 | verity->root_hash = TAKE_PTR(root_hash); | |
2009 | verity->root_hash_size = root_hash_size; | |
2010 | } | |
2011 | ||
2012 | if (root_hash_sig) { | |
2013 | verity->root_hash_sig = TAKE_PTR(root_hash_sig); | |
2014 | verity->root_hash_sig_size = root_hash_sig_size; | |
e7cbe5cb | 2015 | } |
89e62e0b LP |
2016 | |
2017 | if (verity_data_path) | |
2018 | verity->data_path = TAKE_PTR(verity_data_path); | |
78ebe980 | 2019 | |
aee36b4e LP |
2020 | if (verity->designator < 0) |
2021 | verity->designator = designator; | |
2022 | ||
78ebe980 LP |
2023 | return 1; |
2024 | } | |
2025 | ||
3b925504 LP |
2026 | int dissected_image_acquire_metadata(DissectedImage *m) { |
2027 | ||
2028 | enum { | |
2029 | META_HOSTNAME, | |
2030 | META_MACHINE_ID, | |
2031 | META_MACHINE_INFO, | |
2032 | META_OS_RELEASE, | |
2033 | _META_MAX, | |
2034 | }; | |
2035 | ||
2036 | static const char *const paths[_META_MAX] = { | |
2037 | [META_HOSTNAME] = "/etc/hostname\0", | |
2038 | [META_MACHINE_ID] = "/etc/machine-id\0", | |
2039 | [META_MACHINE_INFO] = "/etc/machine-info\0", | |
d4dffb85 LP |
2040 | [META_OS_RELEASE] = "/etc/os-release\0" |
2041 | "/usr/lib/os-release\0", | |
3b925504 LP |
2042 | }; |
2043 | ||
2044 | _cleanup_strv_free_ char **machine_info = NULL, **os_release = NULL; | |
af8219d5 | 2045 | _cleanup_close_pair_ int error_pipe[2] = { -1, -1 }; |
3b925504 LP |
2046 | _cleanup_(rmdir_and_freep) char *t = NULL; |
2047 | _cleanup_(sigkill_waitp) pid_t child = 0; | |
2048 | sd_id128_t machine_id = SD_ID128_NULL; | |
2049 | _cleanup_free_ char *hostname = NULL; | |
2050 | unsigned n_meta_initialized = 0, k; | |
af8219d5 LP |
2051 | int fds[2 * _META_MAX], r, v; |
2052 | ssize_t n; | |
3b925504 LP |
2053 | |
2054 | BLOCK_SIGNALS(SIGCHLD); | |
2055 | ||
2056 | assert(m); | |
2057 | ||
2058 | for (; n_meta_initialized < _META_MAX; n_meta_initialized ++) | |
2059 | if (pipe2(fds + 2*n_meta_initialized, O_CLOEXEC) < 0) { | |
2060 | r = -errno; | |
2061 | goto finish; | |
2062 | } | |
2063 | ||
2064 | r = mkdtemp_malloc("/tmp/dissect-XXXXXX", &t); | |
2065 | if (r < 0) | |
2066 | goto finish; | |
2067 | ||
af8219d5 LP |
2068 | if (pipe2(error_pipe, O_CLOEXEC) < 0) { |
2069 | r = -errno; | |
2070 | goto finish; | |
2071 | } | |
2072 | ||
e2047ba9 | 2073 | r = safe_fork("(sd-dissect)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_NEW_MOUNTNS|FORK_MOUNTNS_SLAVE, &child); |
be39f6ee | 2074 | if (r < 0) |
3b925504 | 2075 | goto finish; |
be39f6ee | 2076 | if (r == 0) { |
af8219d5 LP |
2077 | error_pipe[0] = safe_close(error_pipe[0]); |
2078 | ||
03bcb6d4 | 2079 | r = dissected_image_mount(m, t, UID_INVALID, DISSECT_IMAGE_READ_ONLY|DISSECT_IMAGE_MOUNT_ROOT_ONLY|DISSECT_IMAGE_VALIDATE_OS); |
429d4e41 | 2080 | if (r < 0) { |
af8219d5 LP |
2081 | /* Let parent know the error */ |
2082 | (void) write(error_pipe[1], &r, sizeof(r)); | |
2083 | ||
429d4e41 | 2084 | log_debug_errno(r, "Failed to mount dissected image: %m"); |
3b925504 | 2085 | _exit(EXIT_FAILURE); |
429d4e41 | 2086 | } |
3b925504 LP |
2087 | |
2088 | for (k = 0; k < _META_MAX; k++) { | |
37e44c3f | 2089 | _cleanup_close_ int fd = -ENOENT; |
3b925504 LP |
2090 | const char *p; |
2091 | ||
2092 | fds[2*k] = safe_close(fds[2*k]); | |
2093 | ||
2094 | NULSTR_FOREACH(p, paths[k]) { | |
36952d19 | 2095 | fd = chase_symlinks_and_open(p, t, CHASE_PREFIX_ROOT, O_RDONLY|O_CLOEXEC|O_NOCTTY, NULL); |
3b925504 LP |
2096 | if (fd >= 0) |
2097 | break; | |
2098 | } | |
36952d19 LP |
2099 | if (fd < 0) { |
2100 | log_debug_errno(fd, "Failed to read %s file of image, ignoring: %m", paths[k]); | |
37e44c3f | 2101 | fds[2*k+1] = safe_close(fds[2*k+1]); |
3b925504 | 2102 | continue; |
36952d19 | 2103 | } |
3b925504 LP |
2104 | |
2105 | r = copy_bytes(fd, fds[2*k+1], (uint64_t) -1, 0); | |
af8219d5 LP |
2106 | if (r < 0) { |
2107 | (void) write(error_pipe[1], &r, sizeof(r)); | |
3b925504 | 2108 | _exit(EXIT_FAILURE); |
af8219d5 | 2109 | } |
3b925504 LP |
2110 | |
2111 | fds[2*k+1] = safe_close(fds[2*k+1]); | |
2112 | } | |
2113 | ||
2114 | _exit(EXIT_SUCCESS); | |
2115 | } | |
2116 | ||
af8219d5 LP |
2117 | error_pipe[1] = safe_close(error_pipe[1]); |
2118 | ||
3b925504 LP |
2119 | for (k = 0; k < _META_MAX; k++) { |
2120 | _cleanup_fclose_ FILE *f = NULL; | |
2121 | ||
2122 | fds[2*k+1] = safe_close(fds[2*k+1]); | |
2123 | ||
4fa744a3 | 2124 | f = take_fdopen(&fds[2*k], "r"); |
3b925504 LP |
2125 | if (!f) { |
2126 | r = -errno; | |
2127 | goto finish; | |
2128 | } | |
2129 | ||
3b925504 LP |
2130 | switch (k) { |
2131 | ||
2132 | case META_HOSTNAME: | |
2133 | r = read_etc_hostname_stream(f, &hostname); | |
2134 | if (r < 0) | |
2135 | log_debug_errno(r, "Failed to read /etc/hostname: %m"); | |
2136 | ||
2137 | break; | |
2138 | ||
2139 | case META_MACHINE_ID: { | |
2140 | _cleanup_free_ char *line = NULL; | |
2141 | ||
2142 | r = read_line(f, LONG_LINE_MAX, &line); | |
2143 | if (r < 0) | |
2144 | log_debug_errno(r, "Failed to read /etc/machine-id: %m"); | |
2145 | else if (r == 33) { | |
2146 | r = sd_id128_from_string(line, &machine_id); | |
2147 | if (r < 0) | |
2148 | log_debug_errno(r, "Image contains invalid /etc/machine-id: %s", line); | |
2149 | } else if (r == 0) | |
2150 | log_debug("/etc/machine-id file is empty."); | |
ab763cb2 HS |
2151 | else if (streq(line, "uninitialized")) |
2152 | log_debug("/etc/machine-id file is uninitialized (likely aborted first boot)."); | |
3b925504 LP |
2153 | else |
2154 | log_debug("/etc/machine-id has unexpected length %i.", r); | |
2155 | ||
2156 | break; | |
2157 | } | |
2158 | ||
2159 | case META_MACHINE_INFO: | |
aa8fbc74 | 2160 | r = load_env_file_pairs(f, "machine-info", &machine_info); |
3b925504 LP |
2161 | if (r < 0) |
2162 | log_debug_errno(r, "Failed to read /etc/machine-info: %m"); | |
2163 | ||
2164 | break; | |
2165 | ||
2166 | case META_OS_RELEASE: | |
aa8fbc74 | 2167 | r = load_env_file_pairs(f, "os-release", &os_release); |
3b925504 LP |
2168 | if (r < 0) |
2169 | log_debug_errno(r, "Failed to read OS release file: %m"); | |
2170 | ||
2171 | break; | |
2172 | } | |
2173 | } | |
2174 | ||
2e87a1fd | 2175 | r = wait_for_terminate_and_check("(sd-dissect)", child, 0); |
3b925504 | 2176 | child = 0; |
2e87a1fd | 2177 | if (r < 0) |
af8219d5 LP |
2178 | return r; |
2179 | ||
2180 | n = read(error_pipe[0], &v, sizeof(v)); | |
2181 | if (n < 0) | |
2182 | return -errno; | |
2183 | if (n == sizeof(v)) | |
2184 | return v; /* propagate error sent to us from child */ | |
2185 | if (n != 0) | |
2186 | return -EIO; | |
2187 | ||
2e87a1fd LP |
2188 | if (r != EXIT_SUCCESS) |
2189 | return -EPROTO; | |
3b925504 LP |
2190 | |
2191 | free_and_replace(m->hostname, hostname); | |
2192 | m->machine_id = machine_id; | |
2193 | strv_free_and_replace(m->machine_info, machine_info); | |
2194 | strv_free_and_replace(m->os_release, os_release); | |
2195 | ||
2196 | finish: | |
2197 | for (k = 0; k < n_meta_initialized; k++) | |
2198 | safe_close_pair(fds + 2*k); | |
2199 | ||
2200 | return r; | |
2201 | } | |
2202 | ||
4526113f LP |
2203 | int dissect_image_and_warn( |
2204 | int fd, | |
2205 | const char *name, | |
89e62e0b | 2206 | const VeritySettings *verity, |
18d73705 | 2207 | const MountOptions *mount_options, |
4526113f LP |
2208 | DissectImageFlags flags, |
2209 | DissectedImage **ret) { | |
2210 | ||
2211 | _cleanup_free_ char *buffer = NULL; | |
2212 | int r; | |
2213 | ||
2214 | if (!name) { | |
2215 | r = fd_get_path(fd, &buffer); | |
2216 | if (r < 0) | |
2217 | return r; | |
2218 | ||
2219 | name = buffer; | |
2220 | } | |
2221 | ||
89e62e0b | 2222 | r = dissect_image(fd, verity, mount_options, flags, ret); |
4526113f LP |
2223 | switch (r) { |
2224 | ||
2225 | case -EOPNOTSUPP: | |
2226 | return log_error_errno(r, "Dissecting images is not supported, compiled without blkid support."); | |
2227 | ||
2228 | case -ENOPKG: | |
2229 | return log_error_errno(r, "Couldn't identify a suitable partition table or file system in '%s'.", name); | |
2230 | ||
2231 | case -EADDRNOTAVAIL: | |
2232 | return log_error_errno(r, "No root partition for specified root hash found in '%s'.", name); | |
2233 | ||
2234 | case -ENOTUNIQ: | |
2235 | return log_error_errno(r, "Multiple suitable root partitions found in image '%s'.", name); | |
2236 | ||
2237 | case -ENXIO: | |
2238 | return log_error_errno(r, "No suitable root partition found in image '%s'.", name); | |
2239 | ||
2240 | case -EPROTONOSUPPORT: | |
2241 | return log_error_errno(r, "Device '%s' is loopback block device with partition scanning turned off, please turn it on.", name); | |
2242 | ||
2243 | default: | |
2244 | if (r < 0) | |
2245 | return log_error_errno(r, "Failed to dissect image '%s': %m", name); | |
2246 | ||
2247 | return r; | |
2248 | } | |
2249 | } | |
2250 | ||
569a0e42 | 2251 | bool dissected_image_can_do_verity(const DissectedImage *image, PartitionDesignator partition_designator) { |
e7cbe5cb LB |
2252 | if (image->single_file_system) |
2253 | return partition_designator == PARTITION_ROOT && image->can_verity; | |
2254 | ||
2255 | return PARTITION_VERITY_OF(partition_designator) >= 0; | |
2256 | } | |
2257 | ||
569a0e42 | 2258 | bool dissected_image_has_verity(const DissectedImage *image, PartitionDesignator partition_designator) { |
e7cbe5cb LB |
2259 | int k; |
2260 | ||
2261 | if (image->single_file_system) | |
2262 | return partition_designator == PARTITION_ROOT && image->verity; | |
2263 | ||
2264 | k = PARTITION_VERITY_OF(partition_designator); | |
2265 | return k >= 0 && image->partitions[k].found; | |
2266 | } | |
2267 | ||
18d73705 LB |
2268 | MountOptions* mount_options_free_all(MountOptions *options) { |
2269 | MountOptions *m; | |
2270 | ||
2271 | while ((m = options)) { | |
2272 | LIST_REMOVE(mount_options, options, m); | |
2273 | free(m->options); | |
2274 | free(m); | |
2275 | } | |
2276 | ||
2277 | return NULL; | |
2278 | } | |
2279 | ||
569a0e42 | 2280 | const char* mount_options_from_designator(const MountOptions *options, PartitionDesignator designator) { |
f5215bc8 | 2281 | const MountOptions *m; |
18d73705 | 2282 | |
f5215bc8 | 2283 | LIST_FOREACH(mount_options, m, options) |
9ece6444 | 2284 | if (designator == m->partition_designator && !isempty(m->options)) |
18d73705 | 2285 | return m->options; |
6aa05ebd | 2286 | |
18d73705 LB |
2287 | return NULL; |
2288 | } | |
2289 | ||
6aa05ebd LP |
2290 | int mount_image_privately_interactively( |
2291 | const char *image, | |
2292 | DissectImageFlags flags, | |
2293 | char **ret_directory, | |
2294 | LoopDevice **ret_loop_device, | |
2295 | DecryptedImage **ret_decrypted_image) { | |
2296 | ||
2297 | _cleanup_(loop_device_unrefp) LoopDevice *d = NULL; | |
2298 | _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL; | |
2299 | _cleanup_(dissected_image_unrefp) DissectedImage *dissected_image = NULL; | |
2300 | _cleanup_(rmdir_and_freep) char *created_dir = NULL; | |
2301 | _cleanup_free_ char *temp = NULL; | |
2302 | int r; | |
2303 | ||
2304 | /* Mounts an OS image at a temporary place, inside a newly created mount namespace of our own. This | |
2305 | * is used by tools such as systemd-tmpfiles or systemd-firstboot to operate on some disk image | |
2306 | * easily. */ | |
2307 | ||
2308 | assert(image); | |
2309 | assert(ret_directory); | |
2310 | assert(ret_loop_device); | |
2311 | assert(ret_decrypted_image); | |
2312 | ||
2313 | r = tempfn_random_child(NULL, program_invocation_short_name, &temp); | |
2314 | if (r < 0) | |
2315 | return log_error_errno(r, "Failed to generate temporary mount directory: %m"); | |
2316 | ||
2317 | r = loop_device_make_by_path( | |
2318 | image, | |
2319 | FLAGS_SET(flags, DISSECT_IMAGE_READ_ONLY) ? O_RDONLY : O_RDWR, | |
2320 | FLAGS_SET(flags, DISSECT_IMAGE_NO_PARTITION_TABLE) ? 0 : LO_FLAGS_PARTSCAN, | |
2321 | &d); | |
2322 | if (r < 0) | |
2323 | return log_error_errno(r, "Failed to set up loopback device: %m"); | |
2324 | ||
89e62e0b | 2325 | r = dissect_image_and_warn(d->fd, image, NULL, NULL, flags, &dissected_image); |
6aa05ebd LP |
2326 | if (r < 0) |
2327 | return r; | |
2328 | ||
89e62e0b | 2329 | r = dissected_image_decrypt_interactively(dissected_image, NULL, NULL, flags, &decrypted_image); |
6aa05ebd LP |
2330 | if (r < 0) |
2331 | return r; | |
2332 | ||
2333 | r = detach_mount_namespace(); | |
2334 | if (r < 0) | |
2335 | return log_error_errno(r, "Failed to detach mount namespace: %m"); | |
2336 | ||
2337 | r = mkdir_p(temp, 0700); | |
2338 | if (r < 0) | |
2339 | return log_error_errno(r, "Failed to create mount point: %m"); | |
2340 | ||
2341 | created_dir = TAKE_PTR(temp); | |
2342 | ||
af187ab2 | 2343 | r = dissected_image_mount_and_warn(dissected_image, created_dir, UID_INVALID, flags); |
6aa05ebd | 2344 | if (r < 0) |
af187ab2 | 2345 | return r; |
6aa05ebd LP |
2346 | |
2347 | if (decrypted_image) { | |
2348 | r = decrypted_image_relinquish(decrypted_image); | |
2349 | if (r < 0) | |
2350 | return log_error_errno(r, "Failed to relinquish DM devices: %m"); | |
2351 | } | |
2352 | ||
2353 | loop_device_relinquish(d); | |
2354 | ||
2355 | *ret_directory = TAKE_PTR(created_dir); | |
2356 | *ret_loop_device = TAKE_PTR(d); | |
2357 | *ret_decrypted_image = TAKE_PTR(decrypted_image); | |
2358 | ||
2359 | return 0; | |
2360 | } | |
2361 | ||
8c1be37e LP |
2362 | static const char *const partition_designator_table[] = { |
2363 | [PARTITION_ROOT] = "root", | |
2364 | [PARTITION_ROOT_SECONDARY] = "root-secondary", | |
aee36b4e LP |
2365 | [PARTITION_USR] = "usr", |
2366 | [PARTITION_USR_SECONDARY] = "usr-secondary", | |
8c1be37e LP |
2367 | [PARTITION_HOME] = "home", |
2368 | [PARTITION_SRV] = "srv", | |
2369 | [PARTITION_ESP] = "esp", | |
a8c47660 | 2370 | [PARTITION_XBOOTLDR] = "xbootldr", |
8c1be37e | 2371 | [PARTITION_SWAP] = "swap", |
4623e8e6 LP |
2372 | [PARTITION_ROOT_VERITY] = "root-verity", |
2373 | [PARTITION_ROOT_SECONDARY_VERITY] = "root-secondary-verity", | |
aee36b4e LP |
2374 | [PARTITION_USR_VERITY] = "usr-verity", |
2375 | [PARTITION_USR_SECONDARY_VERITY] = "usr-secondary-verity", | |
d4dffb85 LP |
2376 | [PARTITION_TMP] = "tmp", |
2377 | [PARTITION_VAR] = "var", | |
8c1be37e LP |
2378 | }; |
2379 | ||
569a0e42 | 2380 | DEFINE_STRING_TABLE_LOOKUP(partition_designator, PartitionDesignator); |