2 * libcryptsetup - cryptsetup library
4 * Copyright (C) 2004 Jana Saout <jana@saout.de>
5 * Copyright (C) 2004-2007 Clemens Fruhwirth <clemens@endorphin.org>
6 * Copyright (C) 2009-2020 Red Hat, Inc. All rights reserved.
7 * Copyright (C) 2009-2020 Milan Broz
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
28 #include <sys/utsname.h>
31 #include "libcryptsetup.h"
37 #include "integrity.h"
39 #include "utils_device_locking.h"
42 #define CRYPT_CD_UNRESTRICTED (1 << 0)
43 #define CRYPT_CD_QUIET (1 << 1)
48 struct device *device;
49 struct device *metadata_device;
51 struct volume_key *volume_key;
53 uint32_t compatibility;
54 struct crypt_pbkdf_type pbkdf;
56 /* global context scope settings */
57 unsigned key_in_keyring:1;
60 uint64_t metadata_size; /* Used in LUKS2 format */
61 uint64_t keyslots_size; /* Used in LUKS2 format */
63 /* Workaround for OOM during parallel activation (like in systemd) */
64 bool memory_hard_pbkdf_lock_enabled;
65 struct crypt_lock_handle *pbkdf_memory_hard_lock;
67 // FIXME: private binary headers and access it properly
68 // through sub-library (LUKS1, TCRYPT)
71 struct { /* used in CRYPT_LUKS1 */
75 struct { /* used in CRYPT_LUKS2 */
77 char cipher[MAX_CIPHER_LEN]; /* only for compatibility */
78 char cipher_mode[MAX_CIPHER_LEN]; /* only for compatibility */
80 unsigned int keyslot_key_size;
81 struct luks2_reenc_context *rh;
83 struct { /* used in CRYPT_PLAIN */
84 struct crypt_params_plain hdr;
87 const char *cipher_mode;
88 unsigned int key_size;
90 struct { /* used in CRYPT_LOOPAES */
91 struct crypt_params_loopaes hdr;
94 const char *cipher_mode;
95 unsigned int key_size;
97 struct { /* used in CRYPT_VERITY */
98 struct crypt_params_verity hdr;
99 const char *root_hash;
100 unsigned int root_hash_size;
102 struct device *fec_device;
104 struct { /* used in CRYPT_TCRYPT */
105 struct crypt_params_tcrypt params;
106 struct tcrypt_phdr hdr;
108 struct { /* used in CRYPT_INTEGRITY */
109 struct crypt_params_integrity params;
110 struct volume_key *journal_mac_key;
111 struct volume_key *journal_crypt_key;
114 struct { /* used in CRYPT_BITLK */
115 struct bitlk_metadata params;
118 struct { /* used if initialized without header by name */
120 /* buffers, must refresh from kernel on every query */
121 char cipher_spec[MAX_CIPHER_LEN*2+1];
122 char cipher[MAX_CIPHER_LEN];
123 const char *cipher_mode;
124 unsigned int key_size;
128 /* callbacks definitions */
129 void (*log)(int level, const char *msg, void *usrptr);
131 int (*confirm)(const char *msg, void *usrptr);
132 void *confirm_usrptr;
135 /* Just to suppress redundant messages about crypto backend */
136 static int _crypto_logged = 0;
139 static void (*_default_log)(int level, const char *msg, void *usrptr) = NULL;
140 static int _debug_level = 0;
142 /* Library can do metadata locking */
143 static int _metadata_locking = 1;
145 /* Library scope detection for kernel keyring support */
146 static int _kernel_keyring_supported;
148 /* Library allowed to use kernel keyring for loading VK in kernel crypto layer */
149 static int _vk_via_keyring = 1;
151 void crypt_set_debug_level(int level)
153 _debug_level = level;
156 int crypt_get_debug_level(void)
161 void crypt_log(struct crypt_device *cd, int level, const char *msg)
166 if (level < _debug_level)
170 cd->log(level, msg, cd->log_usrptr);
171 else if (_default_log)
172 _default_log(level, msg, NULL);
173 /* Default to stdout/stderr if there is no callback. */
175 fprintf(level == CRYPT_LOG_ERROR ? stderr : stdout, "%s", msg);
178 __attribute__((format(printf, 5, 6)))
179 void logger(struct crypt_device *cd, int level, const char *file,
180 int line, const char *format, ...)
183 char target[LOG_MAX_LEN + 2];
186 va_start(argp, format);
188 len = vsnprintf(&target[0], LOG_MAX_LEN, format, argp);
189 if (len > 0 && len < LOG_MAX_LEN) {
190 /* All verbose and error messages in tools end with EOL. */
191 if (level == CRYPT_LOG_VERBOSE || level == CRYPT_LOG_ERROR ||
192 level == CRYPT_LOG_DEBUG || level == CRYPT_LOG_DEBUG_JSON)
193 strncat(target, "\n", LOG_MAX_LEN);
195 crypt_log(cd, level, target);
201 static const char *mdata_device_path(struct crypt_device *cd)
203 return device_path(cd->metadata_device ?: cd->device);
206 static const char *data_device_path(struct crypt_device *cd)
208 return device_path(cd->device);
212 struct device *crypt_metadata_device(struct crypt_device *cd)
214 return cd->metadata_device ?: cd->device;
217 struct device *crypt_data_device(struct crypt_device *cd)
222 int init_crypto(struct crypt_device *ctx)
227 r = crypt_random_init(ctx);
229 log_err(ctx, _("Cannot initialize crypto RNG backend."));
233 r = crypt_backend_init();
235 log_err(ctx, _("Cannot initialize crypto backend."));
237 if (!r && !_crypto_logged) {
238 log_dbg(ctx, "Crypto backend (%s) initialized in cryptsetup library version %s.",
239 crypt_backend_version(), PACKAGE_VERSION);
241 log_dbg(ctx, "Detected kernel %s %s %s.",
242 uts.sysname, uts.release, uts.machine);
249 static int process_key(struct crypt_device *cd, const char *hash_name,
250 size_t key_size, const char *pass, size_t passLen,
251 struct volume_key **vk)
258 *vk = crypt_alloc_volume_key(key_size, NULL);
263 r = crypt_plain_hash(cd, hash_name, (*vk)->key, key_size, pass, passLen);
266 log_err(cd, _("Hash algorithm %s not supported."),
269 log_err(cd, _("Key processing error (using hash %s)."),
271 crypt_free_volume_key(*vk);
275 } else if (passLen > key_size) {
276 memcpy((*vk)->key, pass, key_size);
278 memcpy((*vk)->key, pass, passLen);
284 static int isPLAIN(const char *type)
286 return (type && !strcmp(CRYPT_PLAIN, type));
289 static int isLUKS1(const char *type)
291 return (type && !strcmp(CRYPT_LUKS1, type));
294 static int isLUKS2(const char *type)
296 return (type && !strcmp(CRYPT_LUKS2, type));
299 static int isLUKS(const char *type)
301 return (isLUKS2(type) || isLUKS1(type));
304 static int isLOOPAES(const char *type)
306 return (type && !strcmp(CRYPT_LOOPAES, type));
309 static int isVERITY(const char *type)
311 return (type && !strcmp(CRYPT_VERITY, type));
314 static int isTCRYPT(const char *type)
316 return (type && !strcmp(CRYPT_TCRYPT, type));
319 static int isINTEGRITY(const char *type)
321 return (type && !strcmp(CRYPT_INTEGRITY, type));
324 static int isBITLK(const char *type)
326 return (type && !strcmp(CRYPT_BITLK, type));
329 static int _onlyLUKS(struct crypt_device *cd, uint32_t cdflags)
333 if (cd && !cd->type) {
334 if (!(cdflags & CRYPT_CD_QUIET))
335 log_err(cd, _("Cannot determine device type. Incompatible activation of device?"));
339 if (!cd || !isLUKS(cd->type)) {
340 if (!(cdflags & CRYPT_CD_QUIET))
341 log_err(cd, _("This operation is supported only for LUKS device."));
345 if (r || (cdflags & CRYPT_CD_UNRESTRICTED) || isLUKS1(cd->type))
348 return LUKS2_unmet_requirements(cd, &cd->u.luks2.hdr, 0, cdflags & CRYPT_CD_QUIET);
351 static int onlyLUKS(struct crypt_device *cd)
353 return _onlyLUKS(cd, 0);
356 static int _onlyLUKS2(struct crypt_device *cd, uint32_t cdflags, uint32_t mask)
360 if (cd && !cd->type) {
361 if (!(cdflags & CRYPT_CD_QUIET))
362 log_err(cd, _("Cannot determine device type. Incompatible activation of device?"));
366 if (!cd || !isLUKS2(cd->type)) {
367 if (!(cdflags & CRYPT_CD_QUIET))
368 log_err(cd, _("This operation is supported only for LUKS2 device."));
372 if (r || (cdflags & CRYPT_CD_UNRESTRICTED))
375 return LUKS2_unmet_requirements(cd, &cd->u.luks2.hdr, mask, cdflags & CRYPT_CD_QUIET);
379 int onlyLUKS2(struct crypt_device *cd)
381 return _onlyLUKS2(cd, 0, 0);
385 int onlyLUKS2mask(struct crypt_device *cd, uint32_t mask)
387 return _onlyLUKS2(cd, 0, mask);
390 static void crypt_set_null_type(struct crypt_device *cd)
397 cd->u.none.active_name = NULL;
399 cd->metadata_size = 0;
400 cd->keyslots_size = 0;
403 static void crypt_reset_null_type(struct crypt_device *cd)
408 free(cd->u.none.active_name);
409 cd->u.none.active_name = NULL;
412 /* keyslot helpers */
413 static int keyslot_verify_or_find_empty(struct crypt_device *cd, int *keyslot)
415 crypt_keyslot_info ki;
417 if (*keyslot == CRYPT_ANY_SLOT) {
418 if (isLUKS1(cd->type))
419 *keyslot = LUKS_keyslot_find_empty(&cd->u.luks1.hdr);
421 *keyslot = LUKS2_keyslot_find_empty(&cd->u.luks2.hdr);
423 log_err(cd, _("All key slots full."));
428 if (isLUKS1(cd->type))
429 ki = LUKS_keyslot_info(&cd->u.luks1.hdr, *keyslot);
431 ki = LUKS2_keyslot_info(&cd->u.luks2.hdr, *keyslot);
433 case CRYPT_SLOT_INVALID:
434 log_err(cd, _("Key slot %d is invalid, please select between 0 and %d."),
435 *keyslot, LUKS_NUMKEYS - 1);
437 case CRYPT_SLOT_INACTIVE:
440 log_err(cd, _("Key slot %d is full, please select another one."),
445 log_dbg(cd, "Selected keyslot %d.", *keyslot);
450 * compares UUIDs returned by device-mapper (striped by cryptsetup) and uuid in header
452 int crypt_uuid_cmp(const char *dm_uuid, const char *hdr_uuid)
457 if (!dm_uuid || !hdr_uuid)
460 str = strchr(dm_uuid, '-');
464 for (i = 0, j = 1; hdr_uuid[i]; i++) {
465 if (hdr_uuid[i] == '-')
468 if (!str[j] || str[j] == '-')
471 if (str[j] != hdr_uuid[i])
480 * compares type of active device to provided string (only if there is no explicit type)
482 static int crypt_uuid_type_cmp(struct crypt_device *cd, const char *type)
484 struct crypt_dm_active_device dmd;
488 /* Must user header-on-disk if we know type here */
489 if (cd->type || !cd->u.none.active_name)
492 log_dbg(cd, "Checking if active device %s without header has UUID type %s.",
493 cd->u.none.active_name, type);
495 r = dm_query_device(cd, cd->u.none.active_name, DM_ACTIVE_UUID, &dmd);
501 if (dmd.uuid && strlen(dmd.uuid) > len &&
502 !strncmp(dmd.uuid, type, len) && dmd.uuid[len] == '-')
505 free(CONST_CAST(void*)dmd.uuid);
509 int PLAIN_activate(struct crypt_device *cd,
511 struct volume_key *vk,
516 struct crypt_dm_active_device dmd = {
521 log_dbg(cd, "Trying to activate PLAIN device %s using cipher %s.",
522 name, crypt_get_cipher_spec(cd));
524 if (MISALIGNED(size, device_block_size(cd, crypt_data_device(cd)) >> SECTOR_SHIFT)) {
525 log_err(cd, _("Device size is not aligned to device logical block size."));
529 r = dm_crypt_target_set(&dmd.segment, 0, dmd.size, crypt_data_device(cd),
530 vk, crypt_get_cipher_spec(cd), crypt_get_iv_offset(cd),
531 crypt_get_data_offset(cd), crypt_get_integrity(cd),
532 crypt_get_integrity_tag_size(cd), crypt_get_sector_size(cd));
536 r = create_or_reload_device(cd, name, CRYPT_PLAIN, &dmd);
538 dm_targets_free(cd, &dmd);
542 int crypt_confirm(struct crypt_device *cd, const char *msg)
544 if (!cd || !cd->confirm)
547 return cd->confirm(msg, cd->confirm_usrptr);
550 void crypt_set_log_callback(struct crypt_device *cd,
551 void (*log)(int level, const char *msg, void *usrptr),
558 cd->log_usrptr = usrptr;
562 void crypt_set_confirm_callback(struct crypt_device *cd,
563 int (*confirm)(const char *msg, void *usrptr),
567 cd->confirm = confirm;
568 cd->confirm_usrptr = usrptr;
572 const char *crypt_get_dir(void)
577 int crypt_init(struct crypt_device **cd, const char *device)
579 struct crypt_device *h = NULL;
585 log_dbg(NULL, "Allocating context for crypt device %s.", device ?: "(none)");
586 #if !HAVE_DECL_O_CLOEXEC
587 log_dbg(NULL, "Running without O_CLOEXEC.");
590 if (!(h = malloc(sizeof(struct crypt_device))))
593 memset(h, 0, sizeof(*h));
595 r = device_alloc(NULL, &h->device, device);
599 dm_backend_init(NULL);
601 h->rng_type = crypt_random_default_key_rng();
606 device_free(NULL, h->device);
611 static int crypt_check_data_device_size(struct crypt_device *cd)
614 uint64_t size, size_min;
616 /* Check data device size, require at least header or one sector */
617 size_min = crypt_get_data_offset(cd) << SECTOR_SHIFT ?: SECTOR_SIZE;
619 r = device_size(cd->device, &size);
623 if (size < size_min) {
624 log_err(cd, _("Header detected but device %s is too small."),
625 device_path(cd->device));
632 static int _crypt_set_data_device(struct crypt_device *cd, const char *device)
634 struct device *dev = NULL;
637 r = device_alloc(cd, &dev, device);
641 if (!cd->metadata_device) {
642 cd->metadata_device = cd->device;
644 device_free(cd, cd->device);
648 return crypt_check_data_device_size(cd);
651 int crypt_set_data_device(struct crypt_device *cd, const char *device)
653 /* metadata device must be set */
654 if (!cd || !cd->device || !device)
657 log_dbg(cd, "Setting ciphertext data device to %s.", device ?: "(none)");
659 if (!isLUKS1(cd->type) && !isLUKS2(cd->type) && !isVERITY(cd->type) &&
660 !isINTEGRITY(cd->type)) {
661 log_err(cd, _("This operation is not supported for this device type."));
665 if (isLUKS2(cd->type) && crypt_get_reenc_context(cd)) {
666 log_err(cd, _("Illegal operation with reencryption in-progress."));
670 return _crypt_set_data_device(cd, device);
673 int crypt_init_data_device(struct crypt_device **cd, const char *device, const char *data_device)
680 r = crypt_init(cd, device);
681 if (r || !data_device || !strcmp(device, data_device))
684 log_dbg(NULL, "Setting ciphertext data device to %s.", data_device);
685 r = _crypt_set_data_device(*cd, data_device);
696 struct crypt_pbkdf_type *crypt_get_pbkdf(struct crypt_device *cd)
702 * crypt_load() helpers
704 static int _crypt_load_luks2(struct crypt_device *cd, int reload, int repair)
708 struct luks2_hdr hdr2 = {};
710 log_dbg(cd, "%soading LUKS2 header (repair %sabled).", reload ? "Rel" : "L", repair ? "en" : "dis");
712 r = LUKS2_hdr_read(cd, &hdr2, repair);
716 if (!reload && !(type = strdup(CRYPT_LUKS2))) {
721 if (verify_pbkdf_params(cd, &cd->pbkdf)) {
722 r = init_pbkdf_type(cd, NULL, CRYPT_LUKS2);
728 LUKS2_hdr_free(cd, &cd->u.luks2.hdr);
729 free(cd->u.luks2.keyslot_cipher);
734 memcpy(&cd->u.luks2.hdr, &hdr2, sizeof(hdr2));
735 cd->u.luks2.keyslot_cipher = NULL;
736 cd->u.luks2.rh = NULL;
741 LUKS2_hdr_free(cd, &hdr2);
746 static void _luks2_reload(struct crypt_device *cd)
748 if (!cd || !isLUKS2(cd->type))
751 (void) _crypt_load_luks2(cd, 1, 0);
754 static int _crypt_load_luks(struct crypt_device *cd, const char *requested_type,
755 int require_header, int repair)
758 struct luks_phdr hdr = {};
765 /* This will return 0 if primary LUKS2 header is damaged */
766 version = LUKS2_hdr_version_unlocked(cd, NULL);
768 if ((isLUKS1(requested_type) && version == 2) ||
769 (isLUKS2(requested_type) && version == 1))
775 if (isLUKS1(requested_type) || version == 1) {
776 if (cd->type && isLUKS2(cd->type)) {
777 log_dbg(cd, "Context is already initialized to type %s", cd->type);
781 if (verify_pbkdf_params(cd, &cd->pbkdf)) {
782 r = init_pbkdf_type(cd, NULL, CRYPT_LUKS1);
787 r = LUKS_read_phdr(&hdr, require_header, repair, cd);
791 if (!cd->type && !(cd->type = strdup(CRYPT_LUKS1))) {
796 /* Set hash to the same as in the loaded header */
797 if (!cd->pbkdf.hash || strcmp(cd->pbkdf.hash, hdr.hashSpec)) {
798 free(CONST_CAST(void*)cd->pbkdf.hash);
799 cd->pbkdf.hash = strdup(hdr.hashSpec);
800 if (!cd->pbkdf.hash) {
806 if (asprintf(&cipher_spec, "%s-%s", hdr.cipherName, hdr.cipherMode) < 0) {
811 free(cd->u.luks1.cipher_spec);
812 cd->u.luks1.cipher_spec = cipher_spec;
814 memcpy(&cd->u.luks1.hdr, &hdr, sizeof(hdr));
815 } else if (isLUKS2(requested_type) || version == 2 || version == 0) {
816 if (cd->type && isLUKS1(cd->type)) {
817 log_dbg(cd, "Context is already initialized to type %s", cd->type);
822 * Current LUKS2 repair just overrides blkid probes
823 * and perform auto-recovery if possible. This is safe
824 * unless future LUKS2 repair code do something more
825 * sophisticated. In such case we would need to check
826 * for LUKS2 requirements and decide if it's safe to
829 r = _crypt_load_luks2(cd, cd->type != NULL, repair);
832 log_err(cd, _("Unsupported LUKS version %d."), version);
836 crypt_safe_memzero(&hdr, sizeof(hdr));
841 static int _crypt_load_tcrypt(struct crypt_device *cd, struct crypt_params_tcrypt *params)
848 if (cd->metadata_device) {
849 log_err(cd, _("Detached metadata device is not supported for this crypt type."));
857 memcpy(&cd->u.tcrypt.params, params, sizeof(*params));
859 r = TCRYPT_read_phdr(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
861 cd->u.tcrypt.params.passphrase = NULL;
862 cd->u.tcrypt.params.passphrase_size = 0;
863 cd->u.tcrypt.params.keyfiles = NULL;
864 cd->u.tcrypt.params.keyfiles_count = 0;
865 cd->u.tcrypt.params.veracrypt_pim = 0;
870 if (!cd->type && !(cd->type = strdup(CRYPT_TCRYPT)))
876 static int _crypt_load_verity(struct crypt_device *cd, struct crypt_params_verity *params)
879 size_t sb_offset = 0;
885 if (params && params->flags & CRYPT_VERITY_NO_HEADER)
889 sb_offset = params->hash_area_offset;
891 r = VERITY_read_sb(cd, sb_offset, &cd->u.verity.uuid, &cd->u.verity.hdr);
895 //FIXME: use crypt_free
896 if (!cd->type && !(cd->type = strdup(CRYPT_VERITY))) {
897 free(CONST_CAST(void*)cd->u.verity.hdr.hash_name);
898 free(CONST_CAST(void*)cd->u.verity.hdr.salt);
899 free(cd->u.verity.uuid);
900 crypt_safe_memzero(&cd->u.verity.hdr, sizeof(cd->u.verity.hdr));
905 cd->u.verity.hdr.flags = params->flags;
907 /* Hash availability checked in sb load */
908 cd->u.verity.root_hash_size = crypt_hash_size(cd->u.verity.hdr.hash_name);
909 if (cd->u.verity.root_hash_size > 4096)
912 if (params && params->data_device &&
913 (r = crypt_set_data_device(cd, params->data_device)) < 0)
916 if (params && params->fec_device) {
917 r = device_alloc(cd, &cd->u.verity.fec_device, params->fec_device);
920 cd->u.verity.hdr.fec_area_offset = params->fec_area_offset;
921 cd->u.verity.hdr.fec_roots = params->fec_roots;
927 static int _crypt_load_integrity(struct crypt_device *cd,
928 struct crypt_params_integrity *params)
936 r = INTEGRITY_read_sb(cd, &cd->u.integrity.params, &cd->u.integrity.sb_flags);
940 // FIXME: add checks for fields in integrity sb vs params
943 cd->u.integrity.params.journal_watermark = params->journal_watermark;
944 cd->u.integrity.params.journal_commit_time = params->journal_commit_time;
945 cd->u.integrity.params.buffer_sectors = params->buffer_sectors;
946 // FIXME: check ENOMEM
947 if (params->integrity)
948 cd->u.integrity.params.integrity = strdup(params->integrity);
949 cd->u.integrity.params.integrity_key_size = params->integrity_key_size;
950 if (params->journal_integrity)
951 cd->u.integrity.params.journal_integrity = strdup(params->journal_integrity);
952 if (params->journal_crypt)
953 cd->u.integrity.params.journal_crypt = strdup(params->journal_crypt);
955 if (params->journal_crypt_key) {
956 cd->u.integrity.journal_crypt_key =
957 crypt_alloc_volume_key(params->journal_crypt_key_size,
958 params->journal_crypt_key);
959 if (!cd->u.integrity.journal_crypt_key)
962 if (params->journal_integrity_key) {
963 cd->u.integrity.journal_mac_key =
964 crypt_alloc_volume_key(params->journal_integrity_key_size,
965 params->journal_integrity_key);
966 if (!cd->u.integrity.journal_mac_key)
971 if (!cd->type && !(cd->type = strdup(CRYPT_INTEGRITY))) {
972 free(CONST_CAST(void*)cd->u.integrity.params.integrity);
979 static int _crypt_load_bitlk(struct crypt_device *cd,
980 struct bitlk_metadata *params)
988 r = BITLK_read_sb(cd, &cd->u.bitlk.params);
992 if (asprintf(&cd->u.bitlk.cipher_spec, "%s-%s",
993 cd->u.bitlk.params.cipher, cd->u.bitlk.params.cipher_mode) < 0) {
994 cd->u.bitlk.cipher_spec = NULL;
998 if (!cd->type && !(cd->type = strdup(CRYPT_BITLK)))
1004 int crypt_load(struct crypt_device *cd,
1005 const char *requested_type,
1013 log_dbg(cd, "Trying to load %s crypt type from device %s.",
1014 requested_type ?: "any", mdata_device_path(cd) ?: "(none)");
1016 if (!crypt_metadata_device(cd))
1019 crypt_reset_null_type(cd);
1020 cd->data_offset = 0;
1021 cd->metadata_size = 0;
1022 cd->keyslots_size = 0;
1024 if (!requested_type || isLUKS1(requested_type) || isLUKS2(requested_type)) {
1025 if (cd->type && !isLUKS1(cd->type) && !isLUKS2(cd->type)) {
1026 log_dbg(cd, "Context is already initialized to type %s", cd->type);
1030 r = _crypt_load_luks(cd, requested_type, 1, 0);
1031 } else if (isVERITY(requested_type)) {
1032 if (cd->type && !isVERITY(cd->type)) {
1033 log_dbg(cd, "Context is already initialized to type %s", cd->type);
1036 r = _crypt_load_verity(cd, params);
1037 } else if (isTCRYPT(requested_type)) {
1038 if (cd->type && !isTCRYPT(cd->type)) {
1039 log_dbg(cd, "Context is already initialized to type %s", cd->type);
1042 r = _crypt_load_tcrypt(cd, params);
1043 } else if (isINTEGRITY(requested_type)) {
1044 if (cd->type && !isINTEGRITY(cd->type)) {
1045 log_dbg(cd, "Context is already initialized to type %s", cd->type);
1048 r = _crypt_load_integrity(cd, params);
1049 } else if (isBITLK(requested_type)) {
1050 if (cd->type && !isBITLK(cd->type)) {
1051 log_dbg(cd, "Context is already initialized to type %s", cd->type);
1054 r = _crypt_load_bitlk(cd, params);
1062 * crypt_init() helpers
1064 static int _init_by_name_crypt_none(struct crypt_device *cd)
1067 char _mode[MAX_CIPHER_LEN];
1068 struct crypt_dm_active_device dmd;
1069 struct dm_target *tgt = &dmd.segment;
1071 if (cd->type || !cd->u.none.active_name)
1074 r = dm_query_device(cd, cd->u.none.active_name,
1075 DM_ACTIVE_CRYPT_CIPHER |
1076 DM_ACTIVE_CRYPT_KEYSIZE, &dmd);
1079 if (!single_segment(&dmd) || tgt->type != DM_CRYPT)
1082 r = crypt_parse_name_and_mode(tgt->u.crypt.cipher,
1083 cd->u.none.cipher, NULL,
1087 snprintf(cd->u.none.cipher_spec, sizeof(cd->u.none.cipher_spec),
1088 "%s-%s", cd->u.none.cipher, _mode);
1089 cd->u.none.cipher_mode = cd->u.none.cipher_spec + strlen(cd->u.none.cipher) + 1;
1090 cd->u.none.key_size = tgt->u.crypt.vk->keylength;
1093 dm_targets_free(cd, &dmd);
1097 static const char *LUKS_UUID(struct crypt_device *cd)
1101 else if (isLUKS1(cd->type))
1102 return cd->u.luks1.hdr.uuid;
1103 else if (isLUKS2(cd->type))
1104 return cd->u.luks2.hdr.uuid;
1109 static void crypt_free_type(struct crypt_device *cd)
1111 if (isPLAIN(cd->type)) {
1112 free(CONST_CAST(void*)cd->u.plain.hdr.hash);
1113 free(cd->u.plain.cipher);
1114 free(cd->u.plain.cipher_spec);
1115 } else if (isLUKS2(cd->type)) {
1116 LUKS2_reenc_context_free(cd, cd->u.luks2.rh);
1117 LUKS2_hdr_free(cd, &cd->u.luks2.hdr);
1118 free(cd->u.luks2.keyslot_cipher);
1119 } else if (isLUKS1(cd->type)) {
1120 free(cd->u.luks1.cipher_spec);
1121 } else if (isLOOPAES(cd->type)) {
1122 free(CONST_CAST(void*)cd->u.loopaes.hdr.hash);
1123 free(cd->u.loopaes.cipher);
1124 free(cd->u.loopaes.cipher_spec);
1125 } else if (isVERITY(cd->type)) {
1126 free(CONST_CAST(void*)cd->u.verity.hdr.hash_name);
1127 free(CONST_CAST(void*)cd->u.verity.hdr.data_device);
1128 free(CONST_CAST(void*)cd->u.verity.hdr.hash_device);
1129 free(CONST_CAST(void*)cd->u.verity.hdr.fec_device);
1130 free(CONST_CAST(void*)cd->u.verity.hdr.salt);
1131 free(CONST_CAST(void*)cd->u.verity.root_hash);
1132 free(cd->u.verity.uuid);
1133 device_free(cd, cd->u.verity.fec_device);
1134 } else if (isINTEGRITY(cd->type)) {
1135 free(CONST_CAST(void*)cd->u.integrity.params.integrity);
1136 free(CONST_CAST(void*)cd->u.integrity.params.journal_integrity);
1137 free(CONST_CAST(void*)cd->u.integrity.params.journal_crypt);
1138 crypt_free_volume_key(cd->u.integrity.journal_crypt_key);
1139 crypt_free_volume_key(cd->u.integrity.journal_mac_key);
1140 } else if (isBITLK(cd->type)) {
1141 free(cd->u.bitlk.cipher_spec);
1142 BITLK_bitlk_metadata_free(&cd->u.bitlk.params);
1143 } else if (!cd->type) {
1144 free(cd->u.none.active_name);
1145 cd->u.none.active_name = NULL;
1148 crypt_set_null_type(cd);
1151 static int _init_by_name_crypt(struct crypt_device *cd, const char *name)
1154 char **dep, *cipher_spec = NULL, cipher[MAX_CIPHER_LEN], cipher_mode[MAX_CIPHER_LEN], deps_uuid_prefix[40], *deps[MAX_DM_DEPS+1] = {};
1155 const char *dev, *namei;
1157 struct crypt_dm_active_device dmd, dmdi = {}, dmdep = {};
1158 struct dm_target *tgt = &dmd.segment, *tgti = &dmdi.segment;
1160 r = dm_query_device(cd, name,
1163 DM_ACTIVE_CRYPT_CIPHER |
1164 DM_ACTIVE_CRYPT_KEYSIZE, &dmd);
1168 if (tgt->type != DM_CRYPT && tgt->type != DM_LINEAR) {
1169 log_dbg(cd, "Unsupported device table detected in %s.", name);
1177 r = snprintf(deps_uuid_prefix, sizeof(deps_uuid_prefix), CRYPT_SUBDEV "-%.32s", dmd.uuid + 6);
1178 if (r < 0 || (size_t)r != (sizeof(deps_uuid_prefix) - 1))
1183 r = dm_device_deps(cd, name, deps_uuid_prefix, deps, ARRAY_SIZE(deps));
1188 r = crypt_parse_name_and_mode(tgt->type == DM_LINEAR ? "null" : tgt->u.crypt.cipher, cipher,
1189 &key_nums, cipher_mode);
1191 log_dbg(cd, "Cannot parse cipher and mode from active device.");
1197 if (tgt->type == DM_CRYPT && tgt->u.crypt.integrity && (namei = device_dm_name(tgt->data_device))) {
1198 r = dm_query_device(cd, namei, DM_ACTIVE_DEVICE, &dmdi);
1201 if (!single_segment(&dmdi) || tgti->type != DM_INTEGRITY) {
1202 log_dbg(cd, "Unsupported device table detected in %s.", namei);
1206 if (!cd->metadata_device) {
1207 device_free(cd, cd->device);
1208 MOVE_REF(cd->device, tgti->data_device);
1212 /* do not try to lookup LUKS2 header in detached header mode */
1213 if (!cd->metadata_device && !found) {
1214 while (*dep && !found) {
1215 r = dm_query_device(cd, *dep, DM_ACTIVE_DEVICE, &dmdep);
1219 tgt = &dmdep.segment;
1221 while (tgt && !found) {
1222 dev = device_path(tgt->data_device);
1227 if (!strstr(dev, dm_get_dir()) ||
1228 !crypt_string_in(dev + strlen(dm_get_dir()) + 1, deps, ARRAY_SIZE(deps))) {
1229 device_free(cd, cd->device);
1230 MOVE_REF(cd->device, tgt->data_device);
1236 dm_targets_free(cd, &dmdep);
1240 if (asprintf(&cipher_spec, "%s-%s", cipher, cipher_mode) < 0) {
1249 if (isPLAIN(cd->type) && single_segment(&dmd) && tgt->type == DM_CRYPT) {
1250 cd->u.plain.hdr.hash = NULL; /* no way to get this */
1251 cd->u.plain.hdr.offset = tgt->u.crypt.offset;
1252 cd->u.plain.hdr.skip = tgt->u.crypt.iv_offset;
1253 cd->u.plain.hdr.sector_size = tgt->u.crypt.sector_size;
1254 cd->u.plain.key_size = tgt->u.crypt.vk->keylength;
1255 cd->u.plain.cipher = strdup(cipher);
1256 MOVE_REF(cd->u.plain.cipher_spec, cipher_spec);
1257 cd->u.plain.cipher_mode = cd->u.plain.cipher_spec + strlen(cipher) + 1;
1258 } else if (isLOOPAES(cd->type) && single_segment(&dmd) && tgt->type == DM_CRYPT) {
1259 cd->u.loopaes.hdr.offset = tgt->u.crypt.offset;
1260 cd->u.loopaes.cipher = strdup(cipher);
1261 MOVE_REF(cd->u.loopaes.cipher_spec, cipher_spec);
1262 cd->u.loopaes.cipher_mode = cd->u.loopaes.cipher_spec + strlen(cipher) + 1;
1263 /* version 3 uses last key for IV */
1264 if (tgt->u.crypt.vk->keylength % key_nums)
1266 cd->u.loopaes.key_size = tgt->u.crypt.vk->keylength / key_nums;
1267 } else if (isLUKS1(cd->type) || isLUKS2(cd->type)) {
1268 if (crypt_metadata_device(cd)) {
1269 r = _crypt_load_luks(cd, cd->type, 0, 0);
1271 log_dbg(cd, "LUKS device header does not match active device.");
1272 crypt_set_null_type(cd);
1273 device_close(cd, cd->metadata_device);
1274 device_close(cd, cd->device);
1278 /* check whether UUIDs match each other */
1279 r = crypt_uuid_cmp(dmd.uuid, LUKS_UUID(cd));
1281 log_dbg(cd, "LUKS device header uuid: %s mismatches DM returned uuid %s",
1282 LUKS_UUID(cd), dmd.uuid);
1283 crypt_free_type(cd);
1288 log_dbg(cd, "LUKS device header not available.");
1289 crypt_set_null_type(cd);
1292 } else if (isTCRYPT(cd->type) && single_segment(&dmd) && tgt->type == DM_CRYPT) {
1293 r = TCRYPT_init_by_name(cd, name, dmd.uuid, tgt, &cd->device,
1294 &cd->u.tcrypt.params, &cd->u.tcrypt.hdr);
1295 } else if (isBITLK(cd->type)) {
1296 r = _crypt_load_bitlk(cd, NULL);
1298 log_dbg(cd, "BITLK device header not available.");
1299 crypt_set_null_type(cd);
1304 dm_targets_free(cd, &dmd);
1305 dm_targets_free(cd, &dmdi);
1306 dm_targets_free(cd, &dmdep);
1307 free(CONST_CAST(void*)dmd.uuid);
1315 static int _init_by_name_verity(struct crypt_device *cd, const char *name)
1317 struct crypt_dm_active_device dmd;
1318 struct dm_target *tgt = &dmd.segment;
1321 r = dm_query_device(cd, name,
1323 DM_ACTIVE_VERITY_HASH_DEVICE |
1324 DM_ACTIVE_VERITY_ROOT_HASH |
1325 DM_ACTIVE_VERITY_PARAMS, &dmd);
1328 if (!single_segment(&dmd) || tgt->type != DM_VERITY) {
1329 log_dbg(cd, "Unsupported device table detected in %s.", name);
1336 if (isVERITY(cd->type)) {
1337 cd->u.verity.uuid = NULL; // FIXME
1338 cd->u.verity.hdr.flags = CRYPT_VERITY_NO_HEADER; //FIXME
1339 cd->u.verity.hdr.data_size = tgt->u.verity.vp->data_size;
1340 cd->u.verity.root_hash_size = tgt->u.verity.root_hash_size;
1341 MOVE_REF(cd->u.verity.hdr.hash_name, tgt->u.verity.vp->hash_name);
1342 cd->u.verity.hdr.data_device = NULL;
1343 cd->u.verity.hdr.hash_device = NULL;
1344 cd->u.verity.hdr.data_block_size = tgt->u.verity.vp->data_block_size;
1345 cd->u.verity.hdr.hash_block_size = tgt->u.verity.vp->hash_block_size;
1346 cd->u.verity.hdr.hash_area_offset = tgt->u.verity.hash_offset;
1347 cd->u.verity.hdr.fec_area_offset = tgt->u.verity.fec_offset;
1348 cd->u.verity.hdr.hash_type = tgt->u.verity.vp->hash_type;
1349 cd->u.verity.hdr.flags = tgt->u.verity.vp->flags;
1350 cd->u.verity.hdr.salt_size = tgt->u.verity.vp->salt_size;
1351 MOVE_REF(cd->u.verity.hdr.salt, tgt->u.verity.vp->salt);
1352 MOVE_REF(cd->u.verity.hdr.fec_device, tgt->u.verity.vp->fec_device);
1353 cd->u.verity.hdr.fec_roots = tgt->u.verity.vp->fec_roots;
1354 MOVE_REF(cd->u.verity.fec_device, tgt->u.verity.fec_device);
1355 MOVE_REF(cd->metadata_device, tgt->u.verity.hash_device);
1356 MOVE_REF(cd->u.verity.root_hash, tgt->u.verity.root_hash);
1359 dm_targets_free(cd, &dmd);
1363 static int _init_by_name_integrity(struct crypt_device *cd, const char *name)
1365 struct crypt_dm_active_device dmd;
1366 struct dm_target *tgt = &dmd.segment;
1369 r = dm_query_device(cd, name, DM_ACTIVE_DEVICE |
1370 DM_ACTIVE_CRYPT_KEY |
1371 DM_ACTIVE_CRYPT_KEYSIZE |
1372 DM_ACTIVE_INTEGRITY_PARAMS, &dmd);
1375 if (!single_segment(&dmd) || tgt->type != DM_INTEGRITY) {
1376 log_dbg(cd, "Unsupported device table detected in %s.", name);
1383 if (isINTEGRITY(cd->type)) {
1384 cd->u.integrity.params.tag_size = tgt->u.integrity.tag_size;
1385 cd->u.integrity.params.sector_size = tgt->u.integrity.sector_size;
1386 cd->u.integrity.params.journal_size = tgt->u.integrity.journal_size;
1387 cd->u.integrity.params.journal_watermark = tgt->u.integrity.journal_watermark;
1388 cd->u.integrity.params.journal_commit_time = tgt->u.integrity.journal_commit_time;
1389 cd->u.integrity.params.interleave_sectors = tgt->u.integrity.interleave_sectors;
1390 cd->u.integrity.params.buffer_sectors = tgt->u.integrity.buffer_sectors;
1391 MOVE_REF(cd->u.integrity.params.integrity, tgt->u.integrity.integrity);
1392 MOVE_REF(cd->u.integrity.params.journal_integrity, tgt->u.integrity.journal_integrity);
1393 MOVE_REF(cd->u.integrity.params.journal_crypt, tgt->u.integrity.journal_crypt);
1395 if (tgt->u.integrity.vk)
1396 cd->u.integrity.params.integrity_key_size = tgt->u.integrity.vk->keylength;
1397 if (tgt->u.integrity.journal_integrity_key)
1398 cd->u.integrity.params.journal_integrity_key_size = tgt->u.integrity.journal_integrity_key->keylength;
1399 if (tgt->u.integrity.journal_crypt_key)
1400 cd->u.integrity.params.integrity_key_size = tgt->u.integrity.journal_crypt_key->keylength;
1401 MOVE_REF(cd->metadata_device, tgt->u.integrity.meta_device);
1404 dm_targets_free(cd, &dmd);
1408 int crypt_init_by_name_and_header(struct crypt_device **cd,
1410 const char *header_device)
1412 crypt_status_info ci;
1413 struct crypt_dm_active_device dmd;
1414 struct dm_target *tgt = &dmd.segment;
1420 log_dbg(NULL, "Allocating crypt device context by device %s.", name);
1422 ci = crypt_status(NULL, name);
1423 if (ci == CRYPT_INVALID)
1426 if (ci < CRYPT_ACTIVE) {
1427 log_err(NULL, _("Device %s is not active."), name);
1431 r = dm_query_device(NULL, name, DM_ACTIVE_DEVICE | DM_ACTIVE_UUID, &dmd);
1437 if (header_device) {
1438 r = crypt_init(cd, header_device);
1440 r = crypt_init(cd, device_path(tgt->data_device));
1442 /* Underlying device disappeared but mapping still active */
1443 if (!tgt->data_device || r == -ENOTBLK)
1444 log_verbose(NULL, _("Underlying device for crypt device %s disappeared."),
1447 /* Underlying device is not readable but crypt mapping exists */
1449 r = crypt_init(cd, NULL);
1456 if (!strncmp(CRYPT_PLAIN, dmd.uuid, sizeof(CRYPT_PLAIN)-1))
1457 (*cd)->type = strdup(CRYPT_PLAIN);
1458 else if (!strncmp(CRYPT_LOOPAES, dmd.uuid, sizeof(CRYPT_LOOPAES)-1))
1459 (*cd)->type = strdup(CRYPT_LOOPAES);
1460 else if (!strncmp(CRYPT_LUKS1, dmd.uuid, sizeof(CRYPT_LUKS1)-1))
1461 (*cd)->type = strdup(CRYPT_LUKS1);
1462 else if (!strncmp(CRYPT_LUKS2, dmd.uuid, sizeof(CRYPT_LUKS2)-1))
1463 (*cd)->type = strdup(CRYPT_LUKS2);
1464 else if (!strncmp(CRYPT_VERITY, dmd.uuid, sizeof(CRYPT_VERITY)-1))
1465 (*cd)->type = strdup(CRYPT_VERITY);
1466 else if (!strncmp(CRYPT_TCRYPT, dmd.uuid, sizeof(CRYPT_TCRYPT)-1))
1467 (*cd)->type = strdup(CRYPT_TCRYPT);
1468 else if (!strncmp(CRYPT_INTEGRITY, dmd.uuid, sizeof(CRYPT_INTEGRITY)-1))
1469 (*cd)->type = strdup(CRYPT_INTEGRITY);
1470 else if (!strncmp(CRYPT_BITLK, dmd.uuid, sizeof(CRYPT_BITLK)-1))
1471 (*cd)->type = strdup(CRYPT_BITLK);
1473 log_dbg(NULL, "Unknown UUID set, some parameters are not set.");
1475 log_dbg(NULL, "Active device has no UUID set, some parameters are not set.");
1477 if (header_device) {
1478 r = crypt_set_data_device(*cd, device_path(tgt->data_device));
1483 /* Try to initialize basic parameters from active device */
1485 if (tgt->type == DM_CRYPT || tgt->type == DM_LINEAR)
1486 r = _init_by_name_crypt(*cd, name);
1487 else if (tgt->type == DM_VERITY)
1488 r = _init_by_name_verity(*cd, name);
1489 else if (tgt->type == DM_INTEGRITY)
1490 r = _init_by_name_integrity(*cd, name);
1495 } else if (!(*cd)->type) {
1496 /* For anonymous device (no header found) remember initialized name */
1497 (*cd)->u.none.active_name = strdup(name);
1500 free(CONST_CAST(void*)dmd.uuid);
1501 dm_targets_free(NULL, &dmd);
1505 int crypt_init_by_name(struct crypt_device **cd, const char *name)
1507 return crypt_init_by_name_and_header(cd, name, NULL);
1511 * crypt_format() helpers
1513 static int _crypt_format_plain(struct crypt_device *cd,
1515 const char *cipher_mode,
1517 size_t volume_key_size,
1518 struct crypt_params_plain *params)
1520 unsigned int sector_size = params ? params->sector_size : SECTOR_SIZE;
1523 if (!cipher || !cipher_mode) {
1524 log_err(cd, _("Invalid plain crypt parameters."));
1528 if (volume_key_size > 1024) {
1529 log_err(cd, _("Invalid key size."));
1534 log_err(cd, _("UUID is not supported for this crypt type."));
1538 if (cd->metadata_device) {
1539 log_err(cd, _("Detached metadata device is not supported for this crypt type."));
1543 /* For compatibility with old params structure */
1545 sector_size = SECTOR_SIZE;
1547 if (sector_size < SECTOR_SIZE || sector_size > MAX_SECTOR_SIZE ||
1548 NOTPOW2(sector_size)) {
1549 log_err(cd, _("Unsupported encryption sector size."));
1553 if (sector_size > SECTOR_SIZE && !device_size(cd->device, &dev_size)) {
1554 if (params && params->offset)
1555 dev_size -= (params->offset * SECTOR_SIZE);
1556 if (dev_size % sector_size) {
1557 log_err(cd, _("Device size is not aligned to requested sector size."));
1562 if (!(cd->type = strdup(CRYPT_PLAIN)))
1565 cd->u.plain.key_size = volume_key_size;
1566 cd->volume_key = crypt_alloc_volume_key(volume_key_size, NULL);
1567 if (!cd->volume_key)
1570 if (asprintf(&cd->u.plain.cipher_spec, "%s-%s", cipher, cipher_mode) < 0) {
1571 cd->u.plain.cipher_spec = NULL;
1574 cd->u.plain.cipher = strdup(cipher);
1575 cd->u.plain.cipher_mode = cd->u.plain.cipher_spec + strlen(cipher) + 1;
1577 if (params && params->hash)
1578 cd->u.plain.hdr.hash = strdup(params->hash);
1580 cd->u.plain.hdr.offset = params ? params->offset : 0;
1581 cd->u.plain.hdr.skip = params ? params->skip : 0;
1582 cd->u.plain.hdr.size = params ? params->size : 0;
1583 cd->u.plain.hdr.sector_size = sector_size;
1585 if (!cd->u.plain.cipher)
1591 static int _crypt_format_luks1(struct crypt_device *cd,
1593 const char *cipher_mode,
1595 const char *volume_key,
1596 size_t volume_key_size,
1597 struct crypt_params_luks1 *params)
1600 unsigned long required_alignment = DEFAULT_DISK_ALIGNMENT;
1601 unsigned long alignment_offset = 0;
1604 if (!cipher || !cipher_mode)
1607 if (!crypt_metadata_device(cd)) {
1608 log_err(cd, _("Can't format LUKS without device."));
1612 if (params && cd->data_offset && params->data_alignment &&
1613 (cd->data_offset % params->data_alignment)) {
1614 log_err(cd, _("Requested data alignment is not compatible with data offset."));
1618 if (!(cd->type = strdup(CRYPT_LUKS1)))
1622 cd->volume_key = crypt_alloc_volume_key(volume_key_size,
1625 cd->volume_key = crypt_generate_volume_key(cd, volume_key_size);
1627 if (!cd->volume_key)
1630 if (verify_pbkdf_params(cd, &cd->pbkdf)) {
1631 r = init_pbkdf_type(cd, NULL, CRYPT_LUKS1);
1636 if (params && params->hash && strcmp(params->hash, cd->pbkdf.hash)) {
1637 free(CONST_CAST(void*)cd->pbkdf.hash);
1638 cd->pbkdf.hash = strdup(params->hash);
1639 if (!cd->pbkdf.hash)
1643 if (params && params->data_device) {
1644 if (!cd->metadata_device)
1645 cd->metadata_device = cd->device;
1647 device_free(cd, cd->device);
1649 if (device_alloc(cd, &cd->device, params->data_device) < 0)
1653 if (params && cd->metadata_device) {
1654 /* For detached header the alignment is used directly as data offset */
1655 if (!cd->data_offset)
1656 cd->data_offset = params->data_alignment;
1657 required_alignment = params->data_alignment * SECTOR_SIZE;
1658 } else if (params && params->data_alignment) {
1659 required_alignment = params->data_alignment * SECTOR_SIZE;
1661 device_topology_alignment(cd, cd->device,
1662 &required_alignment,
1663 &alignment_offset, DEFAULT_DISK_ALIGNMENT);
1665 r = LUKS_check_cipher(cd, volume_key_size, cipher, cipher_mode);
1669 r = LUKS_generate_phdr(&cd->u.luks1.hdr, cd->volume_key, cipher, cipher_mode,
1670 cd->pbkdf.hash, uuid,
1671 cd->data_offset * SECTOR_SIZE,
1672 alignment_offset, required_alignment, cd);
1676 r = device_check_access(cd, crypt_metadata_device(cd), DEV_EXCL);
1680 if (!device_size(crypt_data_device(cd), &dev_size) &&
1681 dev_size < (crypt_get_data_offset(cd) * SECTOR_SIZE))
1682 log_std(cd, _("WARNING: Data offset is outside of currently available data device.\n"));
1684 if (asprintf(&cd->u.luks1.cipher_spec, "%s-%s", cipher, cipher_mode) < 0) {
1685 cd->u.luks1.cipher_spec = NULL;
1689 r = LUKS_wipe_header_areas(&cd->u.luks1.hdr, cd);
1691 free(cd->u.luks1.cipher_spec);
1692 log_err(cd, _("Cannot wipe header on device %s."),
1693 mdata_device_path(cd));
1697 r = LUKS_write_phdr(&cd->u.luks1.hdr, cd);
1699 free(cd->u.luks1.cipher_spec);
1704 static int _crypt_format_luks2(struct crypt_device *cd,
1706 const char *cipher_mode,
1708 const char *volume_key,
1709 size_t volume_key_size,
1710 struct crypt_params_luks2 *params)
1712 int r, integrity_key_size = 0;
1713 unsigned long required_alignment = DEFAULT_DISK_ALIGNMENT;
1714 unsigned long alignment_offset = 0;
1715 unsigned int sector_size = params ? params->sector_size : SECTOR_SIZE;
1716 const char *integrity = params ? params->integrity : NULL;
1720 cd->u.luks2.hdr.jobj = NULL;
1721 cd->u.luks2.keyslot_cipher = NULL;
1723 if (!cipher || !cipher_mode)
1726 if (!crypt_metadata_device(cd)) {
1727 log_err(cd, _("Can't format LUKS without device."));
1731 if (params && cd->data_offset && params->data_alignment &&
1732 (cd->data_offset % params->data_alignment)) {
1733 log_err(cd, _("Requested data alignment is not compatible with data offset."));
1737 if (sector_size < SECTOR_SIZE || sector_size > MAX_SECTOR_SIZE ||
1738 NOTPOW2(sector_size)) {
1739 log_err(cd, _("Unsupported encryption sector size."));
1742 if (sector_size != SECTOR_SIZE && !dm_flags(cd, DM_CRYPT, &dmc_flags) &&
1743 !(dmc_flags & DM_SECTOR_SIZE_SUPPORTED))
1744 log_std(cd, _("WARNING: The device activation will fail, dm-crypt is missing "
1745 "support for requested encryption sector size.\n"));
1748 if (params->integrity_params) {
1749 /* Standalone dm-integrity must not be used */
1750 if (params->integrity_params->integrity ||
1751 params->integrity_params->integrity_key_size)
1753 /* FIXME: journal encryption and MAC is here not yet supported */
1754 if (params->integrity_params->journal_crypt ||
1755 params->integrity_params->journal_integrity)
1758 if (!INTEGRITY_tag_size(cd, integrity, cipher, cipher_mode)) {
1759 if (!strcmp(integrity, "none"))
1764 integrity_key_size = INTEGRITY_key_size(cd, integrity);
1765 if ((integrity_key_size < 0) || (integrity_key_size >= (int)volume_key_size)) {
1766 log_err(cd, _("Volume key is too small for encryption with integrity extensions."));
1771 r = device_check_access(cd, crypt_metadata_device(cd), DEV_EXCL);
1775 if (!(cd->type = strdup(CRYPT_LUKS2)))
1779 cd->volume_key = crypt_alloc_volume_key(volume_key_size,
1782 cd->volume_key = crypt_generate_volume_key(cd, volume_key_size);
1784 if (!cd->volume_key)
1787 if (params && params->pbkdf)
1788 r = crypt_set_pbkdf_type(cd, params->pbkdf);
1789 else if (verify_pbkdf_params(cd, &cd->pbkdf))
1790 r = init_pbkdf_type(cd, NULL, CRYPT_LUKS2);
1795 if (params && params->data_device) {
1796 if (!cd->metadata_device)
1797 cd->metadata_device = cd->device;
1799 device_free(cd, cd->device);
1801 if (device_alloc(cd, &cd->device, params->data_device) < 0)
1805 if (params && cd->metadata_device) {
1806 /* For detached header the alignment is used directly as data offset */
1807 if (!cd->data_offset)
1808 cd->data_offset = params->data_alignment;
1809 required_alignment = params->data_alignment * SECTOR_SIZE;
1810 } else if (params && params->data_alignment) {
1811 required_alignment = params->data_alignment * SECTOR_SIZE;
1813 device_topology_alignment(cd, cd->device,
1814 &required_alignment,
1815 &alignment_offset, DEFAULT_DISK_ALIGNMENT);
1817 /* FIXME: allow this later also for normal ciphers (check AF_ALG availability. */
1818 if (integrity && !integrity_key_size) {
1819 r = crypt_cipher_check_kernel(cipher, cipher_mode, integrity, volume_key_size);
1821 log_err(cd, _("Cipher %s-%s (key size %zd bits) is not available."),
1822 cipher, cipher_mode, volume_key_size * 8);
1827 if ((!integrity || integrity_key_size) && !crypt_cipher_wrapped_key(cipher, cipher_mode) &&
1828 !INTEGRITY_tag_size(cd, NULL, cipher, cipher_mode)) {
1829 r = LUKS_check_cipher(cd, volume_key_size - integrity_key_size,
1830 cipher, cipher_mode);
1835 r = LUKS2_generate_hdr(cd, &cd->u.luks2.hdr, cd->volume_key,
1836 cipher, cipher_mode,
1839 cd->data_offset * SECTOR_SIZE,
1842 cd->metadata_size, cd->keyslots_size);
1846 r = device_size(crypt_data_device(cd), &dev_size);
1850 if (dev_size < (crypt_get_data_offset(cd) * SECTOR_SIZE))
1851 log_std(cd, _("WARNING: Data offset is outside of currently available data device.\n"));
1853 if (cd->metadata_size && (cd->metadata_size != LUKS2_metadata_size(cd->u.luks2.hdr.jobj)))
1854 log_std(cd, _("WARNING: LUKS2 metadata size changed to %" PRIu64 " bytes.\n"),
1855 LUKS2_metadata_size(cd->u.luks2.hdr.jobj));
1857 if (cd->keyslots_size && (cd->keyslots_size != LUKS2_keyslots_size(cd->u.luks2.hdr.jobj)))
1858 log_std(cd, _("WARNING: LUKS2 keyslots area size changed to %" PRIu64 " bytes.\n"),
1859 LUKS2_keyslots_size(cd->u.luks2.hdr.jobj));
1861 if (!integrity && sector_size > SECTOR_SIZE) {
1862 dev_size -= (crypt_get_data_offset(cd) * SECTOR_SIZE);
1863 if (dev_size % sector_size) {
1864 log_err(cd, _("Device size is not aligned to requested sector size."));
1870 if (params && (params->label || params->subsystem)) {
1871 r = LUKS2_hdr_labels(cd, &cd->u.luks2.hdr,
1872 params->label, params->subsystem, 0);
1877 r = LUKS2_wipe_header_areas(cd, &cd->u.luks2.hdr);
1879 log_err(cd, _("Cannot wipe header on device %s."),
1880 mdata_device_path(cd));
1881 if (dev_size < LUKS2_hdr_and_areas_size(cd->u.luks2.hdr.jobj))
1882 log_err(cd, _("Device %s is too small."), device_path(crypt_metadata_device(cd)));
1886 /* Wipe integrity superblock and create integrity superblock */
1887 if (crypt_get_integrity_tag_size(cd)) {
1888 r = crypt_wipe_device(cd, crypt_data_device(cd), CRYPT_WIPE_ZERO,
1889 crypt_get_data_offset(cd) * SECTOR_SIZE,
1890 8 * SECTOR_SIZE, 8 * SECTOR_SIZE, NULL, NULL);
1893 log_err(cd, _("Cannot format device %s in use."),
1894 data_device_path(cd));
1895 else if (r == -EACCES) {
1896 log_err(cd, _("Cannot format device %s, permission denied."),
1897 data_device_path(cd));
1900 log_err(cd, _("Cannot wipe header on device %s."),
1901 data_device_path(cd));
1906 r = INTEGRITY_format(cd, params ? params->integrity_params : NULL, NULL, NULL);
1908 log_err(cd, _("Cannot format integrity for device %s."),
1909 data_device_path(cd));
1915 /* override sequence id check with format */
1916 r = LUKS2_hdr_write_force(cd, &cd->u.luks2.hdr);
1919 log_err(cd, _("Cannot format device %s in use."),
1920 mdata_device_path(cd));
1921 else if (r == -EACCES) {
1922 log_err(cd, _("Cannot format device %s, permission denied."),
1923 mdata_device_path(cd));
1926 log_err(cd, _("Cannot format device %s."),
1927 mdata_device_path(cd));
1932 LUKS2_hdr_free(cd, &cd->u.luks2.hdr);
1937 static int _crypt_format_loopaes(struct crypt_device *cd,
1940 size_t volume_key_size,
1941 struct crypt_params_loopaes *params)
1943 if (!crypt_metadata_device(cd)) {
1944 log_err(cd, _("Can't format LOOPAES without device."));
1948 if (volume_key_size > 1024) {
1949 log_err(cd, _("Invalid key size."));
1954 log_err(cd, _("UUID is not supported for this crypt type."));
1958 if (cd->metadata_device) {
1959 log_err(cd, _("Detached metadata device is not supported for this crypt type."));
1963 if (!(cd->type = strdup(CRYPT_LOOPAES)))
1966 cd->u.loopaes.key_size = volume_key_size;
1968 cd->u.loopaes.cipher = strdup(cipher ?: DEFAULT_LOOPAES_CIPHER);
1970 if (params && params->hash)
1971 cd->u.loopaes.hdr.hash = strdup(params->hash);
1973 cd->u.loopaes.hdr.offset = params ? params->offset : 0;
1974 cd->u.loopaes.hdr.skip = params ? params->skip : 0;
1979 static int _crypt_format_verity(struct crypt_device *cd,
1981 struct crypt_params_verity *params)
1983 int r = 0, hash_size;
1984 uint64_t data_device_size, hash_blocks_size;
1985 struct device *fec_device = NULL;
1986 char *fec_device_path = NULL, *hash_name = NULL, *root_hash = NULL, *salt = NULL;
1988 if (!crypt_metadata_device(cd)) {
1989 log_err(cd, _("Can't format VERITY without device."));
1996 if (!params->data_device && !cd->metadata_device)
1999 if (params->hash_type > VERITY_MAX_HASH_TYPE) {
2000 log_err(cd, _("Unsupported VERITY hash type %d."), params->hash_type);
2004 if (VERITY_BLOCK_SIZE_OK(params->data_block_size) ||
2005 VERITY_BLOCK_SIZE_OK(params->hash_block_size)) {
2006 log_err(cd, _("Unsupported VERITY block size."));
2010 if (MISALIGNED_512(params->hash_area_offset)) {
2011 log_err(cd, _("Unsupported VERITY hash offset."));
2015 if (MISALIGNED_512(params->fec_area_offset)) {
2016 log_err(cd, _("Unsupported VERITY FEC offset."));
2020 if (!(cd->type = strdup(CRYPT_VERITY)))
2023 if (params->data_device) {
2024 r = crypt_set_data_device(cd, params->data_device);
2029 if (!params->data_size) {
2030 r = device_size(cd->device, &data_device_size);
2034 cd->u.verity.hdr.data_size = data_device_size / params->data_block_size;
2036 cd->u.verity.hdr.data_size = params->data_size;
2038 if (device_is_identical(crypt_metadata_device(cd), crypt_data_device(cd)) &&
2039 (cd->u.verity.hdr.data_size * params->data_block_size) > params->hash_area_offset) {
2040 log_err(cd, _("Data area overlaps with hash area."));
2044 hash_size = crypt_hash_size(params->hash_name);
2045 if (hash_size <= 0) {
2046 log_err(cd, _("Hash algorithm %s not supported."),
2050 cd->u.verity.root_hash_size = hash_size;
2052 if (params->fec_device) {
2053 fec_device_path = strdup(params->fec_device);
2054 if (!fec_device_path)
2056 r = device_alloc(cd, &fec_device, params->fec_device);
2062 hash_blocks_size = VERITY_hash_blocks(cd, params) * params->hash_block_size;
2063 if (device_is_identical(crypt_metadata_device(cd), fec_device) &&
2064 (params->hash_area_offset + hash_blocks_size) > params->fec_area_offset) {
2065 log_err(cd, _("Hash area overlaps with FEC area."));
2070 if (device_is_identical(crypt_data_device(cd), fec_device) &&
2071 (cd->u.verity.hdr.data_size * params->data_block_size) > params->fec_area_offset) {
2072 log_err(cd, _("Data area overlaps with FEC area."));
2078 root_hash = malloc(cd->u.verity.root_hash_size);
2079 hash_name = strdup(params->hash_name);
2080 salt = malloc(params->salt_size);
2082 if (!root_hash || !hash_name || !salt) {
2087 cd->u.verity.hdr.flags = params->flags;
2088 cd->u.verity.root_hash = root_hash;
2089 cd->u.verity.hdr.hash_name = hash_name;
2090 cd->u.verity.hdr.data_device = NULL;
2091 cd->u.verity.fec_device = fec_device;
2092 cd->u.verity.hdr.fec_device = fec_device_path;
2093 cd->u.verity.hdr.fec_roots = params->fec_roots;
2094 cd->u.verity.hdr.data_block_size = params->data_block_size;
2095 cd->u.verity.hdr.hash_block_size = params->hash_block_size;
2096 cd->u.verity.hdr.hash_area_offset = params->hash_area_offset;
2097 cd->u.verity.hdr.fec_area_offset = params->fec_area_offset;
2098 cd->u.verity.hdr.hash_type = params->hash_type;
2099 cd->u.verity.hdr.flags = params->flags;
2100 cd->u.verity.hdr.salt_size = params->salt_size;
2101 cd->u.verity.hdr.salt = salt;
2104 memcpy(salt, params->salt, params->salt_size);
2106 r = crypt_random_get(cd, salt, params->salt_size, CRYPT_RND_SALT);
2110 if (params->flags & CRYPT_VERITY_CREATE_HASH) {
2111 r = VERITY_create(cd, &cd->u.verity.hdr,
2112 cd->u.verity.root_hash, cd->u.verity.root_hash_size);
2113 if (!r && params->fec_device)
2114 r = VERITY_FEC_process(cd, &cd->u.verity.hdr, cd->u.verity.fec_device, 0, NULL);
2119 if (!(params->flags & CRYPT_VERITY_NO_HEADER)) {
2121 if (!(cd->u.verity.uuid = strdup(uuid)))
2124 r = VERITY_UUID_generate(cd, &cd->u.verity.uuid);
2127 r = VERITY_write_sb(cd, cd->u.verity.hdr.hash_area_offset,
2134 device_free(cd, fec_device);
2137 free(fec_device_path);
2144 static int _crypt_format_integrity(struct crypt_device *cd,
2146 struct crypt_params_integrity *params)
2149 uint32_t integrity_tag_size;
2150 char *integrity = NULL, *journal_integrity = NULL, *journal_crypt = NULL;
2151 struct volume_key *journal_crypt_key = NULL, *journal_mac_key = NULL;
2157 log_err(cd, _("UUID is not supported for this crypt type."));
2161 r = device_check_access(cd, crypt_metadata_device(cd), DEV_EXCL);
2165 /* Wipe first 8 sectors - fs magic numbers etc. */
2166 r = crypt_wipe_device(cd, crypt_metadata_device(cd), CRYPT_WIPE_ZERO, 0,
2167 8 * SECTOR_SIZE, 8 * SECTOR_SIZE, NULL, NULL);
2169 log_err(cd, _("Cannot wipe header on device %s."),
2170 mdata_device_path(cd));
2174 if (!(cd->type = strdup(CRYPT_INTEGRITY)))
2177 if (params->journal_crypt_key) {
2178 journal_crypt_key = crypt_alloc_volume_key(params->journal_crypt_key_size,
2179 params->journal_crypt_key);
2180 if (!journal_crypt_key)
2184 if (params->journal_integrity_key) {
2185 journal_mac_key = crypt_alloc_volume_key(params->journal_integrity_key_size,
2186 params->journal_integrity_key);
2187 if (!journal_mac_key) {
2193 if (params->integrity && !(integrity = strdup(params->integrity))) {
2197 if (params->journal_integrity && !(journal_integrity = strdup(params->journal_integrity))) {
2201 if (params->journal_crypt && !(journal_crypt = strdup(params->journal_crypt))) {
2206 integrity_tag_size = INTEGRITY_hash_tag_size(integrity);
2207 if (integrity_tag_size > 0 && params->tag_size && integrity_tag_size != params->tag_size)
2208 log_std(cd, _("WARNING: Requested tag size %d bytes differs from %s size output (%d bytes).\n"),
2209 params->tag_size, integrity, integrity_tag_size);
2211 if (params->tag_size)
2212 integrity_tag_size = params->tag_size;
2214 cd->u.integrity.journal_crypt_key = journal_crypt_key;
2215 cd->u.integrity.journal_mac_key = journal_mac_key;
2216 cd->u.integrity.params.journal_size = params->journal_size;
2217 cd->u.integrity.params.journal_watermark = params->journal_watermark;
2218 cd->u.integrity.params.journal_commit_time = params->journal_commit_time;
2219 cd->u.integrity.params.interleave_sectors = params->interleave_sectors;
2220 cd->u.integrity.params.buffer_sectors = params->buffer_sectors;
2221 cd->u.integrity.params.sector_size = params->sector_size;
2222 cd->u.integrity.params.tag_size = integrity_tag_size;
2223 cd->u.integrity.params.integrity = integrity;
2224 cd->u.integrity.params.journal_integrity = journal_integrity;
2225 cd->u.integrity.params.journal_crypt = journal_crypt;
2227 r = INTEGRITY_format(cd, params, cd->u.integrity.journal_crypt_key, cd->u.integrity.journal_mac_key);
2229 log_err(cd, _("Cannot format integrity for device %s."),
2230 mdata_device_path(cd));
2233 crypt_free_volume_key(journal_crypt_key);
2234 crypt_free_volume_key(journal_mac_key);
2236 free(journal_integrity);
2237 free(journal_crypt);
2243 int crypt_format(struct crypt_device *cd,
2246 const char *cipher_mode,
2248 const char *volume_key,
2249 size_t volume_key_size,
2258 log_dbg(cd, "Context already formatted as %s.", cd->type);
2262 log_dbg(cd, "Formatting device %s as type %s.", mdata_device_path(cd) ?: "(none)", type);
2264 crypt_reset_null_type(cd);
2266 r = init_crypto(cd);
2271 r = _crypt_format_plain(cd, cipher, cipher_mode,
2272 uuid, volume_key_size, params);
2273 else if (isLUKS1(type))
2274 r = _crypt_format_luks1(cd, cipher, cipher_mode,
2275 uuid, volume_key, volume_key_size, params);
2276 else if (isLUKS2(type))
2277 r = _crypt_format_luks2(cd, cipher, cipher_mode,
2278 uuid, volume_key, volume_key_size, params);
2279 else if (isLOOPAES(type))
2280 r = _crypt_format_loopaes(cd, cipher, uuid, volume_key_size, params);
2281 else if (isVERITY(type))
2282 r = _crypt_format_verity(cd, uuid, params);
2283 else if (isINTEGRITY(type))
2284 r = _crypt_format_integrity(cd, uuid, params);
2286 log_err(cd, _("Unknown crypt device type %s requested."), type);
2291 crypt_set_null_type(cd);
2292 crypt_free_volume_key(cd->volume_key);
2293 cd->volume_key = NULL;
2299 int crypt_repair(struct crypt_device *cd,
2300 const char *requested_type,
2301 void *params __attribute__((unused)))
2308 log_dbg(cd, "Trying to repair %s crypt type from device %s.",
2309 requested_type ?: "any", mdata_device_path(cd) ?: "(none)");
2311 if (!crypt_metadata_device(cd))
2314 if (requested_type && !isLUKS(requested_type))
2317 /* Load with repair */
2318 r = _crypt_load_luks(cd, requested_type, 1, 1);
2322 /* cd->type and header must be set in context */
2323 r = crypt_check_data_device_size(cd);
2325 crypt_set_null_type(cd);
2330 /* compare volume keys */
2331 static int _compare_volume_keys(struct volume_key *svk, unsigned skeyring_only, struct volume_key *tvk, unsigned tkeyring_only)
2335 else if (!svk || !tvk)
2338 if (svk->keylength != tvk->keylength)
2341 if (!skeyring_only && !tkeyring_only)
2342 return memcmp(svk->key, tvk->key, svk->keylength);
2344 if (svk->key_description && tvk->key_description)
2345 return strcmp(svk->key_description, tvk->key_description);
2350 static int _compare_device_types(struct crypt_device *cd,
2351 const struct crypt_dm_active_device *src,
2352 const struct crypt_dm_active_device *tgt)
2355 log_dbg(cd, "Missing device uuid in target device.");
2359 if (isLUKS2(cd->type) && !strncmp("INTEGRITY-", tgt->uuid, strlen("INTEGRITY-"))) {
2360 if (crypt_uuid_cmp(tgt->uuid, src->uuid)) {
2361 log_dbg(cd, "LUKS UUID mismatch.");
2364 } else if (isLUKS(cd->type)) {
2365 if (!src->uuid || strncmp(cd->type, tgt->uuid, strlen(cd->type)) ||
2366 crypt_uuid_cmp(tgt->uuid, src->uuid)) {
2367 log_dbg(cd, "LUKS UUID mismatch.");
2370 } else if (isPLAIN(cd->type) || isLOOPAES(cd->type)) {
2371 if (strncmp(cd->type, tgt->uuid, strlen(cd->type))) {
2372 log_dbg(cd, "Unexpected uuid prefix %s in target device.", tgt->uuid);
2376 log_dbg(cd, "Unsupported device type %s for reload.", cd->type ?: "<empty>");
2383 static int _compare_crypt_devices(struct crypt_device *cd,
2384 const struct dm_target *src,
2385 const struct dm_target *tgt)
2387 /* for crypt devices keys are mandatory */
2388 if (!src->u.crypt.vk || !tgt->u.crypt.vk)
2391 if (_compare_volume_keys(src->u.crypt.vk, 0, tgt->u.crypt.vk, tgt->u.crypt.vk->key_description != NULL)) {
2392 log_dbg(cd, "Keys in context and target device do not match.");
2397 if (!src->u.crypt.cipher || !tgt->u.crypt.cipher)
2399 if (strcmp(src->u.crypt.cipher, tgt->u.crypt.cipher)) {
2400 log_dbg(cd, "Cipher specs do not match.");
2403 if (crypt_strcmp(src->u.crypt.integrity, tgt->u.crypt.integrity)) {
2404 log_dbg(cd, "Integrity parameters do not match.");
2408 if (src->u.crypt.offset != tgt->u.crypt.offset ||
2409 src->u.crypt.sector_size != tgt->u.crypt.sector_size ||
2410 src->u.crypt.iv_offset != tgt->u.crypt.iv_offset ||
2411 src->u.crypt.tag_size != tgt->u.crypt.tag_size) {
2412 log_dbg(cd, "Integer parameters do not match.");
2416 if (!device_is_identical(src->data_device, tgt->data_device)) {
2417 log_dbg(cd, "Data devices do not match.");
2424 static int _compare_integrity_devices(struct crypt_device *cd,
2425 const struct dm_target *src,
2426 const struct dm_target *tgt)
2429 * some parameters may be implicit (and set in dm-integrity ctor)
2433 * journal_commit_time
2435 * interleave_sectors
2438 /* check remaining integer values that makes sense */
2439 if (src->u.integrity.tag_size != tgt->u.integrity.tag_size ||
2440 src->u.integrity.offset != tgt->u.integrity.offset ||
2441 src->u.integrity.sector_size != tgt->u.integrity.sector_size) {
2442 log_dbg(cd, "Integer parameters do not match.");
2446 if (crypt_strcmp(src->u.integrity.integrity, tgt->u.integrity.integrity) ||
2447 crypt_strcmp(src->u.integrity.journal_integrity, tgt->u.integrity.journal_integrity) ||
2448 crypt_strcmp(src->u.integrity.journal_crypt, tgt->u.integrity.journal_crypt)) {
2449 log_dbg(cd, "Journal parameters do not match.");
2453 /* unfortunately dm-integrity doesn't support keyring */
2454 if (_compare_volume_keys(src->u.integrity.vk, 0, tgt->u.integrity.vk, 0) ||
2455 _compare_volume_keys(src->u.integrity.journal_integrity_key, 0, tgt->u.integrity.journal_integrity_key, 0) ||
2456 _compare_volume_keys(src->u.integrity.journal_crypt_key, 0, tgt->u.integrity.journal_crypt_key, 0)) {
2457 log_dbg(cd, "Journal keys do not match.");
2461 /* unsupported underneath dm-crypt with auth. encryption */
2462 if (src->u.integrity.meta_device || tgt->u.integrity.meta_device)
2465 if (src->size != tgt->size) {
2466 log_dbg(cd, "Device size parameters do not match.");
2470 if (!device_is_identical(src->data_device, tgt->data_device)) {
2471 log_dbg(cd, "Data devices do not match.");
2478 int crypt_compare_dm_devices(struct crypt_device *cd,
2479 const struct crypt_dm_active_device *src,
2480 const struct crypt_dm_active_device *tgt)
2483 const struct dm_target *s, *t;
2488 r = _compare_device_types(cd, src, tgt);
2497 log_dbg(cd, "segments count mismatch.");
2500 if (s->type != t->type) {
2501 log_dbg(cd, "segment type mismatch.");
2508 r = _compare_crypt_devices(cd, s, t);
2511 r = _compare_integrity_devices(cd, s, t);
2514 r = (s->u.linear.offset == t->u.linear.offset) ? 0 : -EINVAL;
2530 static int _reload_device(struct crypt_device *cd, const char *name,
2531 struct crypt_dm_active_device *sdmd)
2534 struct crypt_dm_active_device tdmd;
2535 struct dm_target *src, *tgt = &tdmd.segment;
2537 if (!cd || !cd->type || !name || !(sdmd->flags & CRYPT_ACTIVATE_REFRESH))
2540 r = dm_query_device(cd, name, DM_ACTIVE_DEVICE | DM_ACTIVE_CRYPT_CIPHER |
2541 DM_ACTIVE_UUID | DM_ACTIVE_CRYPT_KEYSIZE |
2542 DM_ACTIVE_CRYPT_KEY, &tdmd);
2544 log_err(cd, _("Device %s is not active."), name);
2548 if (!single_segment(&tdmd) || tgt->type != DM_CRYPT || tgt->u.crypt.tag_size) {
2550 log_err(cd, _("Unsupported parameters on device %s."), name);
2554 r = crypt_compare_dm_devices(cd, sdmd, &tdmd);
2556 log_err(cd, _("Mismatching parameters on device %s."), name);
2560 src = &sdmd->segment;
2562 /* Changing read only flag for active device makes no sense */
2563 if (tdmd.flags & CRYPT_ACTIVATE_READONLY)
2564 sdmd->flags |= CRYPT_ACTIVATE_READONLY;
2566 sdmd->flags &= ~CRYPT_ACTIVATE_READONLY;
2568 if (sdmd->flags & CRYPT_ACTIVATE_KEYRING_KEY) {
2569 r = crypt_volume_key_set_description(tgt->u.crypt.vk, src->u.crypt.vk->key_description);
2573 crypt_free_volume_key(tgt->u.crypt.vk);
2574 tgt->u.crypt.vk = crypt_alloc_volume_key(src->u.crypt.vk->keylength, src->u.crypt.vk->key);
2575 if (!tgt->u.crypt.vk) {
2581 r = device_block_adjust(cd, src->data_device, DEV_OK,
2582 src->u.crypt.offset, &sdmd->size, NULL);
2586 tdmd.flags = sdmd->flags;
2587 tgt->size = tdmd.size = sdmd->size;
2589 r = dm_reload_device(cd, name, &tdmd, 0, 1);
2591 dm_targets_free(cd, &tdmd);
2592 free(CONST_CAST(void*)tdmd.uuid);
2597 static int _reload_device_with_integrity(struct crypt_device *cd,
2601 struct crypt_dm_active_device *sdmd,
2602 struct crypt_dm_active_device *sdmdi)
2605 struct crypt_dm_active_device tdmd, tdmdi = {};
2606 struct dm_target *src, *srci, *tgt = &tdmd.segment, *tgti = &tdmdi.segment;
2607 struct device *data_device = NULL;
2609 if (!cd || !cd->type || !name || !iname || !(sdmd->flags & CRYPT_ACTIVATE_REFRESH))
2612 r = dm_query_device(cd, name, DM_ACTIVE_DEVICE | DM_ACTIVE_CRYPT_CIPHER |
2613 DM_ACTIVE_UUID | DM_ACTIVE_CRYPT_KEYSIZE |
2614 DM_ACTIVE_CRYPT_KEY, &tdmd);
2616 log_err(cd, _("Device %s is not active."), name);
2620 if (!single_segment(&tdmd) || tgt->type != DM_CRYPT || !tgt->u.crypt.tag_size) {
2622 log_err(cd, _("Unsupported parameters on device %s."), name);
2626 r = dm_query_device(cd, iname, DM_ACTIVE_DEVICE | DM_ACTIVE_UUID, &tdmdi);
2628 log_err(cd, _("Device %s is not active."), iname);
2633 if (!single_segment(&tdmdi) || tgti->type != DM_INTEGRITY) {
2635 log_err(cd, _("Unsupported parameters on device %s."), iname);
2639 r = crypt_compare_dm_devices(cd, sdmdi, &tdmdi);
2641 log_err(cd, _("Mismatching parameters on device %s."), iname);
2645 src = &sdmd->segment;
2646 srci = &sdmdi->segment;
2648 r = device_alloc(cd, &data_device, ipath);
2652 r = device_block_adjust(cd, srci->data_device, DEV_OK,
2653 srci->u.integrity.offset, &sdmdi->size, NULL);
2657 src->data_device = data_device;
2659 r = crypt_compare_dm_devices(cd, sdmd, &tdmd);
2661 log_err(cd, _("Crypt devices mismatch."));
2665 /* Changing read only flag for active device makes no sense */
2666 if (tdmd.flags & CRYPT_ACTIVATE_READONLY)
2667 sdmd->flags |= CRYPT_ACTIVATE_READONLY;
2669 sdmd->flags &= ~CRYPT_ACTIVATE_READONLY;
2671 if (tdmdi.flags & CRYPT_ACTIVATE_READONLY)
2672 sdmdi->flags |= CRYPT_ACTIVATE_READONLY;
2674 sdmdi->flags &= ~CRYPT_ACTIVATE_READONLY;
2676 if (sdmd->flags & CRYPT_ACTIVATE_KEYRING_KEY) {
2677 r = crypt_volume_key_set_description(tgt->u.crypt.vk, src->u.crypt.vk->key_description);
2681 crypt_free_volume_key(tgt->u.crypt.vk);
2682 tgt->u.crypt.vk = crypt_alloc_volume_key(src->u.crypt.vk->keylength, src->u.crypt.vk->key);
2683 if (!tgt->u.crypt.vk) {
2689 r = device_block_adjust(cd, src->data_device, DEV_OK,
2690 src->u.crypt.offset, &sdmd->size, NULL);
2694 tdmd.flags = sdmd->flags;
2695 tdmd.size = sdmd->size;
2697 if ((r = dm_reload_device(cd, iname, sdmdi, 0, 0))) {
2698 log_err(cd, _("Failed to reload device %s."), iname);
2702 if ((r = dm_reload_device(cd, name, &tdmd, 0, 0))) {
2703 log_err(cd, _("Failed to reload device %s."), name);
2707 if ((r = dm_suspend_device(cd, name, 0))) {
2708 log_err(cd, _("Failed to suspend device %s."), name);
2712 if ((r = dm_suspend_device(cd, iname, 0))) {
2713 log_err(cd, _("Failed to suspend device %s."), iname);
2717 if ((r = dm_resume_device(cd, iname, act2dmflags(sdmdi->flags)))) {
2718 log_err(cd, _("Failed to resume device %s."), iname);
2722 r = dm_resume_device(cd, name, act2dmflags(tdmd.flags));
2727 * This is worst case scenario. We have active underlying dm-integrity device with
2728 * new table but dm-crypt resume failed for some reason. Tear everything down and
2732 log_err(cd, _("Fatal error while reloading device %s (on top of device %s)."), name, iname);
2734 if (dm_error_device(cd, name))
2735 log_err(cd, _("Failed to switch device %s to dm-error."), name);
2736 if (dm_error_device(cd, iname))
2737 log_err(cd, _("Failed to switch device %s to dm-error."), iname);
2741 dm_clear_device(cd, name);
2742 dm_clear_device(cd, iname);
2744 if (dm_status_suspended(cd, name) > 0)
2745 dm_resume_device(cd, name, 0);
2746 if (dm_status_suspended(cd, iname) > 0)
2747 dm_resume_device(cd, iname, 0);
2749 dm_targets_free(cd, &tdmd);
2750 dm_targets_free(cd, &tdmdi);
2751 free(CONST_CAST(void*)tdmdi.uuid);
2752 free(CONST_CAST(void*)tdmd.uuid);
2753 device_free(cd, data_device);
2758 int crypt_resize(struct crypt_device *cd, const char *name, uint64_t new_size)
2760 struct crypt_dm_active_device dmdq, dmd = {};
2761 struct dm_target *tgt = &dmdq.segment;
2765 * FIXME: Also with LUKS2 we must not allow resize when there's
2766 * explicit size stored in metadata (length != "dynamic")
2769 /* Device context type must be initialized */
2770 if (!cd || !cd->type || !name)
2773 log_dbg(cd, "Resizing device %s to %" PRIu64 " sectors.", name, new_size);
2775 r = dm_query_device(cd, name, DM_ACTIVE_CRYPT_KEYSIZE | DM_ACTIVE_CRYPT_KEY, &dmdq);
2777 log_err(cd, _("Device %s is not active."), name);
2780 if (!single_segment(&dmdq) || tgt->type != DM_CRYPT) {
2781 log_dbg(cd, "Unsupported device table detected in %s.", name);
2786 if ((dmdq.flags & CRYPT_ACTIVATE_KEYRING_KEY) && !crypt_key_in_keyring(cd)) {
2791 if (crypt_key_in_keyring(cd)) {
2792 if (!isLUKS2(cd->type)) {
2796 r = LUKS2_key_description_by_segment(cd, &cd->u.luks2.hdr,
2797 tgt->u.crypt.vk, CRYPT_DEFAULT_SEGMENT);
2801 dmdq.flags |= CRYPT_ACTIVATE_KEYRING_KEY;
2804 if (crypt_loop_device(crypt_get_device_name(cd))) {
2805 log_dbg(cd, "Trying to resize underlying loop device %s.",
2806 crypt_get_device_name(cd));
2807 /* Here we always use default size not new_size */
2808 if (crypt_loop_resize(crypt_get_device_name(cd)))
2809 log_err(cd, _("Cannot resize loop device."));
2812 r = device_block_adjust(cd, crypt_data_device(cd), DEV_OK,
2813 crypt_get_data_offset(cd), &new_size, &dmdq.flags);
2817 if (MISALIGNED(new_size, tgt->u.crypt.sector_size >> SECTOR_SHIFT)) {
2818 log_err(cd, _("Device size is not aligned to requested sector size."));
2823 if (MISALIGNED(new_size, device_block_size(cd, crypt_data_device(cd)) >> SECTOR_SHIFT)) {
2824 log_err(cd, _("Device size is not aligned to device logical block size."));
2829 dmd.uuid = crypt_get_uuid(cd);
2830 dmd.size = new_size;
2831 dmd.flags = dmdq.flags | CRYPT_ACTIVATE_REFRESH;
2832 r = dm_crypt_target_set(&dmd.segment, 0, new_size, crypt_data_device(cd),
2833 tgt->u.crypt.vk, crypt_get_cipher_spec(cd),
2834 crypt_get_iv_offset(cd), crypt_get_data_offset(cd),
2835 crypt_get_integrity(cd), crypt_get_integrity_tag_size(cd),
2836 crypt_get_sector_size(cd));
2840 if (new_size == dmdq.size) {
2841 log_dbg(cd, "Device has already requested size %" PRIu64
2842 " sectors.", dmdq.size);
2845 if (isTCRYPT(cd->type))
2847 else if (isLUKS2(cd->type))
2848 r = LUKS2_unmet_requirements(cd, &cd->u.luks2.hdr, 0, 0);
2850 r = _reload_device(cd, name, &dmd);
2853 dm_targets_free(cd, &dmd);
2854 dm_targets_free(cd, &dmdq);
2859 int crypt_set_uuid(struct crypt_device *cd, const char *uuid)
2861 const char *active_uuid;
2864 log_dbg(cd, "%s device uuid.", uuid ? "Setting new" : "Refreshing");
2866 if ((r = onlyLUKS(cd)))
2869 active_uuid = crypt_get_uuid(cd);
2871 if (uuid && active_uuid && !strncmp(uuid, active_uuid, UUID_STRING_L)) {
2872 log_dbg(cd, "UUID is the same as requested (%s) for device %s.",
2873 uuid, mdata_device_path(cd));
2878 log_dbg(cd, "Requested new UUID change to %s for %s.", uuid, mdata_device_path(cd));
2880 log_dbg(cd, "Requested new UUID refresh for %s.", mdata_device_path(cd));
2882 if (!crypt_confirm(cd, _("Do you really want to change UUID of device?")))
2885 if (isLUKS1(cd->type))
2886 return LUKS_hdr_uuid_set(&cd->u.luks1.hdr, uuid, cd);
2888 return LUKS2_hdr_uuid(cd, &cd->u.luks2.hdr, uuid);
2891 int crypt_set_label(struct crypt_device *cd, const char *label, const char *subsystem)
2895 log_dbg(cd, "Setting new labels.");
2897 if ((r = onlyLUKS2(cd)))
2900 return LUKS2_hdr_labels(cd, &cd->u.luks2.hdr, label, subsystem, 1);
2903 int crypt_header_backup(struct crypt_device *cd,
2904 const char *requested_type,
2905 const char *backup_file)
2909 if (requested_type && !isLUKS(requested_type))
2915 /* Load with repair */
2916 r = _crypt_load_luks(cd, requested_type, 1, 0);
2920 log_dbg(cd, "Requested header backup of device %s (%s) to "
2921 "file %s.", mdata_device_path(cd), requested_type ?: "any type", backup_file);
2923 if (isLUKS1(cd->type) && (!requested_type || isLUKS1(requested_type)))
2924 r = LUKS_hdr_backup(backup_file, cd);
2925 else if (isLUKS2(cd->type) && (!requested_type || isLUKS2(requested_type)))
2926 r = LUKS2_hdr_backup(cd, &cd->u.luks2.hdr, backup_file);
2933 int crypt_header_restore(struct crypt_device *cd,
2934 const char *requested_type,
2935 const char *backup_file)
2937 struct luks_phdr hdr1;
2938 struct luks2_hdr hdr2;
2941 if (requested_type && !isLUKS(requested_type))
2944 if (!cd || (cd->type && !isLUKS(cd->type)) || !backup_file)
2947 r = init_crypto(cd);
2951 log_dbg(cd, "Requested header restore to device %s (%s) from "
2952 "file %s.", mdata_device_path(cd), requested_type ?: "any type", backup_file);
2954 version = LUKS2_hdr_version_unlocked(cd, backup_file);
2956 (requested_type && version == 1 && !isLUKS1(requested_type)) ||
2957 (requested_type && version == 2 && !isLUKS2(requested_type))) {
2958 log_err(cd, _("Header backup file does not contain compatible LUKS header."));
2962 memset(&hdr2, 0, sizeof(hdr2));
2966 r = LUKS_hdr_restore(backup_file, &hdr1, cd);
2968 r = LUKS2_hdr_restore(cd, &hdr2, backup_file);
2970 crypt_safe_memzero(&hdr1, sizeof(hdr1));
2971 crypt_safe_memzero(&hdr2, sizeof(hdr2));
2972 } else if (isLUKS2(cd->type) && (!requested_type || isLUKS2(requested_type))) {
2973 r = LUKS2_hdr_restore(cd, &cd->u.luks2.hdr, backup_file);
2976 } else if (isLUKS1(cd->type) && (!requested_type || isLUKS1(requested_type)))
2977 r = LUKS_hdr_restore(backup_file, &cd->u.luks1.hdr, cd);
2982 r = _crypt_load_luks(cd, version == 1 ? CRYPT_LUKS1 : CRYPT_LUKS2, 1, 1);
2987 void crypt_free(struct crypt_device *cd)
2992 log_dbg(cd, "Releasing crypt device %s context.", mdata_device_path(cd));
2994 dm_backend_exit(cd);
2995 crypt_free_volume_key(cd->volume_key);
2997 crypt_free_type(cd);
2999 device_free(cd, cd->device);
3000 device_free(cd, cd->metadata_device);
3002 free(CONST_CAST(void*)cd->pbkdf.type);
3003 free(CONST_CAST(void*)cd->pbkdf.hash);
3005 /* Some structures can contain keys (TCRYPT), wipe it */
3006 crypt_safe_memzero(cd, sizeof(*cd));
3010 static char *crypt_get_device_key_description(struct crypt_device *cd, const char *name)
3013 struct crypt_dm_active_device dmd;
3014 struct dm_target *tgt = &dmd.segment;
3016 if (dm_query_device(cd, name, DM_ACTIVE_CRYPT_KEY | DM_ACTIVE_CRYPT_KEYSIZE, &dmd) < 0)
3019 if (single_segment(&dmd) && tgt->type == DM_CRYPT &&
3020 (dmd.flags & CRYPT_ACTIVATE_KEYRING_KEY) && tgt->u.crypt.vk->key_description)
3021 desc = strdup(tgt->u.crypt.vk->key_description);
3023 dm_targets_free(cd, &dmd);
3028 int crypt_suspend(struct crypt_device *cd,
3032 crypt_status_info ci;
3034 uint32_t dmflags = DM_SUSPEND_WIPE_KEY;
3036 /* FIXME: check context uuid matches the dm-crypt device uuid (onlyLUKS branching) */
3041 log_dbg(cd, "Suspending volume %s.", name);
3046 r = crypt_uuid_type_cmp(cd, CRYPT_LUKS1);
3048 r = crypt_uuid_type_cmp(cd, CRYPT_LUKS2);
3050 log_err(cd, _("This operation is supported only for LUKS device."));
3056 ci = crypt_status(NULL, name);
3057 if (ci < CRYPT_ACTIVE) {
3058 log_err(cd, _("Volume %s is not active."), name);
3062 dm_backend_init(cd);
3064 r = dm_status_suspended(cd, name);
3069 log_err(cd, _("Volume %s is already suspended."), name);
3074 key_desc = crypt_get_device_key_description(cd, name);
3076 /* we can't simply wipe wrapped keys */
3077 if (crypt_cipher_wrapped_key(crypt_get_cipher(cd), crypt_get_cipher_mode(cd)))
3078 dmflags &= ~DM_SUSPEND_WIPE_KEY;
3080 r = dm_suspend_device(cd, name, dmflags);
3082 log_err(cd, _("Suspend is not supported for device %s."), name);
3084 log_err(cd, _("Error during suspending device %s."), name);
3086 crypt_drop_keyring_key_by_description(cd, key_desc, LOGON_KEY);
3089 dm_backend_exit(cd);
3093 int crypt_resume_by_passphrase(struct crypt_device *cd,
3096 const char *passphrase,
3097 size_t passphrase_size)
3099 struct volume_key *vk = NULL;
3102 /* FIXME: check context uuid matches the dm-crypt device uuid */
3104 if (!passphrase || !name)
3107 log_dbg(cd, "Resuming volume %s.", name);
3109 if ((r = onlyLUKS(cd)))
3112 r = dm_status_suspended(cd, name);
3117 log_err(cd, _("Volume %s is not suspended."), name);
3121 if (isLUKS1(cd->type))
3122 r = LUKS_open_key_with_hdr(keyslot, passphrase, passphrase_size,
3123 &cd->u.luks1.hdr, &vk, cd);
3125 r = LUKS2_keyslot_open(cd, keyslot, CRYPT_DEFAULT_SEGMENT, passphrase, passphrase_size, &vk);
3132 if (crypt_use_keyring_for_vk(cd)) {
3133 if (!isLUKS2(cd->type)) {
3137 r = LUKS2_volume_key_load_in_keyring_by_keyslot(cd,
3138 &cd->u.luks2.hdr, vk, keyslot);
3143 r = dm_resume_and_reinstate_key(cd, name, vk);
3146 log_err(cd, _("Resume is not supported for device %s."), name);
3148 log_err(cd, _("Error during resuming device %s."), name);
3151 crypt_drop_keyring_key(cd, vk);
3152 crypt_free_volume_key(vk);
3154 return r < 0 ? r : keyslot;
3157 int crypt_resume_by_keyfile_device_offset(struct crypt_device *cd,
3160 const char *keyfile,
3161 size_t keyfile_size,
3162 uint64_t keyfile_offset)
3164 struct volume_key *vk = NULL;
3165 char *passphrase_read = NULL;
3166 size_t passphrase_size_read;
3169 /* FIXME: check context uuid matches the dm-crypt device uuid */
3171 if (!name || !keyfile)
3174 log_dbg(cd, "Resuming volume %s.", name);
3176 if ((r = onlyLUKS(cd)))
3179 r = dm_status_suspended(cd, name);
3184 log_err(cd, _("Volume %s is not suspended."), name);
3188 r = crypt_keyfile_device_read(cd, keyfile,
3189 &passphrase_read, &passphrase_size_read,
3190 keyfile_offset, keyfile_size, 0);
3194 if (isLUKS1(cd->type))
3195 r = LUKS_open_key_with_hdr(keyslot, passphrase_read, passphrase_size_read,
3196 &cd->u.luks1.hdr, &vk, cd);
3198 r = LUKS2_keyslot_open(cd, keyslot, CRYPT_DEFAULT_SEGMENT, passphrase_read, passphrase_size_read, &vk);
3203 if (crypt_use_keyring_for_vk(cd)) {
3204 if (!isLUKS2(cd->type)) {
3208 r = LUKS2_volume_key_load_in_keyring_by_keyslot(cd,
3209 &cd->u.luks2.hdr, vk, keyslot);
3214 r = dm_resume_and_reinstate_key(cd, name, vk);
3216 log_err(cd, _("Error during resuming device %s."), name);
3218 crypt_safe_free(passphrase_read);
3220 crypt_drop_keyring_key(cd, vk);
3221 crypt_free_volume_key(vk);
3222 return r < 0 ? r : keyslot;
3225 int crypt_resume_by_keyfile(struct crypt_device *cd,
3228 const char *keyfile,
3229 size_t keyfile_size)
3231 return crypt_resume_by_keyfile_device_offset(cd, name, keyslot,
3232 keyfile, keyfile_size, 0);
3235 int crypt_resume_by_keyfile_offset(struct crypt_device *cd,
3238 const char *keyfile,
3239 size_t keyfile_size,
3240 size_t keyfile_offset)
3242 return crypt_resume_by_keyfile_device_offset(cd, name, keyslot,
3243 keyfile, keyfile_size, keyfile_offset);
3246 int crypt_resume_by_volume_key(struct crypt_device *cd,
3248 const char *volume_key,
3249 size_t volume_key_size)
3251 struct volume_key *vk = NULL;
3254 if (!name || !volume_key)
3257 log_dbg(cd, "Resuming volume %s by volume key.", name);
3259 if ((r = onlyLUKS(cd)))
3262 r = dm_status_suspended(cd, name);
3267 log_err(cd, _("Volume %s is not suspended."), name);
3271 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
3275 if (isLUKS1(cd->type))
3276 r = LUKS_verify_volume_key(&cd->u.luks1.hdr, vk);
3277 else if (isLUKS2(cd->type))
3278 r = LUKS2_digest_verify_by_segment(cd, &cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT, vk);
3281 if (r == -EPERM || r == -ENOENT)
3282 log_err(cd, _("Volume key does not match the volume."));
3287 if (crypt_use_keyring_for_vk(cd)) {
3288 r = LUKS2_key_description_by_segment(cd, &cd->u.luks2.hdr, vk, CRYPT_DEFAULT_SEGMENT);
3290 r = crypt_volume_key_load_in_keyring(cd, vk);
3295 r = dm_resume_and_reinstate_key(cd, name, vk);
3297 log_err(cd, _("Error during resuming device %s."), name);
3300 crypt_drop_keyring_key(cd, vk);
3301 crypt_free_volume_key(vk);
3306 * Keyslot manipulation
3308 int crypt_keyslot_add_by_passphrase(struct crypt_device *cd,
3309 int keyslot, // -1 any
3310 const char *passphrase,
3311 size_t passphrase_size,
3312 const char *new_passphrase,
3313 size_t new_passphrase_size)
3315 int digest, r, active_slots;
3316 struct luks2_keyslot_params params;
3317 struct volume_key *vk = NULL;
3319 log_dbg(cd, "Adding new keyslot, existing passphrase %sprovided,"
3320 "new passphrase %sprovided.",
3321 passphrase ? "" : "not ", new_passphrase ? "" : "not ");
3323 if ((r = onlyLUKS(cd)))
3326 if (!passphrase || !new_passphrase)
3329 r = keyslot_verify_or_find_empty(cd, &keyslot);
3333 if (isLUKS1(cd->type))
3334 active_slots = LUKS_keyslot_active_count(&cd->u.luks1.hdr);
3336 active_slots = LUKS2_keyslot_active_count(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT);
3337 if (active_slots == 0) {
3338 /* No slots used, try to use pre-generated key in header */
3339 if (cd->volume_key) {
3340 vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
3341 r = vk ? 0 : -ENOMEM;
3343 log_err(cd, _("Cannot add key slot, all slots disabled and no volume key provided."));
3346 } else if (active_slots < 0)
3349 /* Passphrase provided, use it to unlock existing keyslot */
3350 if (isLUKS1(cd->type))
3351 r = LUKS_open_key_with_hdr(CRYPT_ANY_SLOT, passphrase,
3352 passphrase_size, &cd->u.luks1.hdr, &vk, cd);
3354 r = LUKS2_keyslot_open(cd, CRYPT_ANY_SLOT, CRYPT_DEFAULT_SEGMENT, passphrase,
3355 passphrase_size, &vk);
3361 if (isLUKS1(cd->type))
3362 r = LUKS_set_key(keyslot, CONST_CAST(char*)new_passphrase,
3363 new_passphrase_size, &cd->u.luks1.hdr, vk, cd);
3365 r = LUKS2_digest_verify_by_segment(cd, &cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT, vk);
3369 r = LUKS2_keyslot_params_default(cd, &cd->u.luks2.hdr, ¶ms);
3372 r = LUKS2_digest_assign(cd, &cd->u.luks2.hdr, keyslot, digest, 1, 0);
3375 r = LUKS2_keyslot_store(cd, &cd->u.luks2.hdr, keyslot,
3376 CONST_CAST(char*)new_passphrase,
3377 new_passphrase_size, vk, ¶ms);
3385 crypt_free_volume_key(vk);
3393 int crypt_keyslot_change_by_passphrase(struct crypt_device *cd,
3396 const char *passphrase,
3397 size_t passphrase_size,
3398 const char *new_passphrase,
3399 size_t new_passphrase_size)
3402 struct luks2_keyslot_params params;
3403 struct volume_key *vk = NULL;
3405 if (!passphrase || !new_passphrase)
3408 log_dbg(cd, "Changing passphrase from old keyslot %d to new %d.",
3409 keyslot_old, keyslot_new);
3411 if ((r = onlyLUKS(cd)))
3414 if (isLUKS1(cd->type))
3415 r = LUKS_open_key_with_hdr(keyslot_old, passphrase, passphrase_size,
3416 &cd->u.luks1.hdr, &vk, cd);
3417 else if (isLUKS2(cd->type)) {
3418 r = LUKS2_keyslot_open(cd, keyslot_old, CRYPT_ANY_SEGMENT, passphrase, passphrase_size, &vk);
3419 /* will fail for keyslots w/o digest. fix if supported in a future */
3421 digest = LUKS2_digest_by_keyslot(&cd->u.luks2.hdr, r);
3430 if (keyslot_old != CRYPT_ANY_SLOT && keyslot_old != r) {
3431 log_dbg(cd, "Keyslot mismatch.");
3436 if (keyslot_new == CRYPT_ANY_SLOT) {
3437 if (isLUKS1(cd->type))
3438 keyslot_new = LUKS_keyslot_find_empty(&cd->u.luks1.hdr);
3439 else if (isLUKS2(cd->type))
3440 keyslot_new = LUKS2_keyslot_find_empty(&cd->u.luks2.hdr);
3441 if (keyslot_new < 0)
3442 keyslot_new = keyslot_old;
3444 log_dbg(cd, "Key change, old slot %d, new slot %d.", keyslot_old, keyslot_new);
3446 if (isLUKS1(cd->type)) {
3447 if (keyslot_old == keyslot_new) {
3448 log_dbg(cd, "Key slot %d is going to be overwritten.", keyslot_old);
3449 (void)crypt_keyslot_destroy(cd, keyslot_old);
3451 r = LUKS_set_key(keyslot_new, new_passphrase, new_passphrase_size,
3452 &cd->u.luks1.hdr, vk, cd);
3453 } else if (isLUKS2(cd->type)) {
3454 r = LUKS2_keyslot_params_default(cd, &cd->u.luks2.hdr, ¶ms);
3458 if (keyslot_old != keyslot_new) {
3459 r = LUKS2_digest_assign(cd, &cd->u.luks2.hdr, keyslot_new, digest, 1, 0);
3463 log_dbg(cd, "Key slot %d is going to be overwritten.", keyslot_old);
3464 /* FIXME: improve return code so that we can detect area is damaged */
3465 r = LUKS2_keyslot_wipe(cd, &cd->u.luks2.hdr, keyslot_old, 1);
3467 /* (void)crypt_keyslot_destroy(cd, keyslot_old); */
3473 r = LUKS2_keyslot_store(cd, &cd->u.luks2.hdr,
3474 keyslot_new, new_passphrase,
3475 new_passphrase_size, vk, ¶ms);
3479 if (r >= 0 && keyslot_old != keyslot_new)
3480 r = crypt_keyslot_destroy(cd, keyslot_old);
3483 log_err(cd, _("Failed to swap new key slot."));
3485 crypt_free_volume_key(vk);
3493 int crypt_keyslot_add_by_keyfile_device_offset(struct crypt_device *cd,
3495 const char *keyfile,
3496 size_t keyfile_size,
3497 uint64_t keyfile_offset,
3498 const char *new_keyfile,
3499 size_t new_keyfile_size,
3500 uint64_t new_keyfile_offset)
3502 int digest, r, active_slots;
3503 size_t passwordLen, new_passwordLen;
3504 struct luks2_keyslot_params params;
3505 char *password = NULL, *new_password = NULL;
3506 struct volume_key *vk = NULL;
3508 if (!keyfile || !new_keyfile)
3511 log_dbg(cd, "Adding new keyslot, existing keyfile %s, new keyfile %s.",
3512 keyfile, new_keyfile);
3514 if ((r = onlyLUKS(cd)))
3517 r = keyslot_verify_or_find_empty(cd, &keyslot);
3521 if (isLUKS1(cd->type))
3522 active_slots = LUKS_keyslot_active_count(&cd->u.luks1.hdr);
3524 active_slots = LUKS2_keyslot_active_count(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT);
3525 if (active_slots == 0) {
3526 /* No slots used, try to use pre-generated key in header */
3527 if (cd->volume_key) {
3528 vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
3529 r = vk ? 0 : -ENOMEM;
3531 log_err(cd, _("Cannot add key slot, all slots disabled and no volume key provided."));
3535 r = crypt_keyfile_device_read(cd, keyfile,
3536 &password, &passwordLen,
3537 keyfile_offset, keyfile_size, 0);
3541 if (isLUKS1(cd->type))
3542 r = LUKS_open_key_with_hdr(CRYPT_ANY_SLOT, password, passwordLen,
3543 &cd->u.luks1.hdr, &vk, cd);
3545 r = LUKS2_keyslot_open(cd, CRYPT_ANY_SLOT, CRYPT_DEFAULT_SEGMENT, password, passwordLen, &vk);
3551 r = crypt_keyfile_device_read(cd, new_keyfile,
3552 &new_password, &new_passwordLen,
3553 new_keyfile_offset, new_keyfile_size, 0);
3557 if (isLUKS1(cd->type))
3558 r = LUKS_set_key(keyslot, new_password, new_passwordLen,
3559 &cd->u.luks1.hdr, vk, cd);
3561 r = LUKS2_digest_verify_by_segment(cd, &cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT, vk);
3565 r = LUKS2_keyslot_params_default(cd, &cd->u.luks2.hdr, ¶ms);
3568 r = LUKS2_digest_assign(cd, &cd->u.luks2.hdr, keyslot, digest, 1, 0);
3571 r = LUKS2_keyslot_store(cd, &cd->u.luks2.hdr, keyslot,
3572 new_password, new_passwordLen, vk, ¶ms);
3575 crypt_safe_free(password);
3576 crypt_safe_free(new_password);
3577 crypt_free_volume_key(vk);
3585 int crypt_keyslot_add_by_keyfile(struct crypt_device *cd,
3587 const char *keyfile,
3588 size_t keyfile_size,
3589 const char *new_keyfile,
3590 size_t new_keyfile_size)
3592 return crypt_keyslot_add_by_keyfile_device_offset(cd, keyslot,
3593 keyfile, keyfile_size, 0,
3594 new_keyfile, new_keyfile_size, 0);
3597 int crypt_keyslot_add_by_keyfile_offset(struct crypt_device *cd,
3599 const char *keyfile,
3600 size_t keyfile_size,
3601 size_t keyfile_offset,
3602 const char *new_keyfile,
3603 size_t new_keyfile_size,
3604 size_t new_keyfile_offset)
3606 return crypt_keyslot_add_by_keyfile_device_offset(cd, keyslot,
3607 keyfile, keyfile_size, keyfile_offset,
3608 new_keyfile, new_keyfile_size, new_keyfile_offset);
3611 int crypt_keyslot_add_by_volume_key(struct crypt_device *cd,
3613 const char *volume_key,
3614 size_t volume_key_size,
3615 const char *passphrase,
3616 size_t passphrase_size)
3618 struct volume_key *vk = NULL;
3624 log_dbg(cd, "Adding new keyslot %d using volume key.", keyslot);
3626 if ((r = onlyLUKS(cd)))
3629 if (isLUKS2(cd->type))
3630 return crypt_keyslot_add_by_key(cd, keyslot,
3631 volume_key, volume_key_size, passphrase,
3632 passphrase_size, 0);
3634 r = keyslot_verify_or_find_empty(cd, &keyslot);
3639 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
3640 else if (cd->volume_key)
3641 vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
3646 r = LUKS_verify_volume_key(&cd->u.luks1.hdr, vk);
3648 log_err(cd, _("Volume key does not match the volume."));
3650 r = LUKS_set_key(keyslot, passphrase, passphrase_size,
3651 &cd->u.luks1.hdr, vk, cd);
3653 crypt_free_volume_key(vk);
3654 return (r < 0) ? r : keyslot;
3657 int crypt_keyslot_destroy(struct crypt_device *cd, int keyslot)
3659 crypt_keyslot_info ki;
3662 log_dbg(cd, "Destroying keyslot %d.", keyslot);
3664 if ((r = _onlyLUKS(cd, CRYPT_CD_UNRESTRICTED)))
3667 ki = crypt_keyslot_status(cd, keyslot);
3668 if (ki == CRYPT_SLOT_INVALID) {
3669 log_err(cd, _("Key slot %d is invalid."), keyslot);
3673 if (isLUKS1(cd->type)) {
3674 if (ki == CRYPT_SLOT_INACTIVE) {
3675 log_err(cd, _("Keyslot %d is not active."), keyslot);
3678 return LUKS_del_key(keyslot, &cd->u.luks1.hdr, cd);
3681 return LUKS2_keyslot_wipe(cd, &cd->u.luks2.hdr, keyslot, 0);
3684 static int _check_header_data_overlap(struct crypt_device *cd, const char *name)
3686 if (!name || !isLUKS(cd->type))
3689 if (!device_is_identical(crypt_data_device(cd), crypt_metadata_device(cd)))
3692 /* FIXME: check real header size */
3693 if (crypt_get_data_offset(cd) == 0) {
3694 log_err(cd, _("Device header overlaps with data area."));
3701 static int check_devices(struct crypt_device *cd, const char *name, const char *iname, uint32_t *flags)
3705 if (!flags || !name)
3709 r = dm_status_device(cd, iname);
3710 if (r >= 0 && !(*flags & CRYPT_ACTIVATE_REFRESH))
3712 if (r < 0 && r != -ENODEV)
3715 *flags &= ~CRYPT_ACTIVATE_REFRESH;
3718 r = dm_status_device(cd, name);
3719 if (r >= 0 && !(*flags & CRYPT_ACTIVATE_REFRESH))
3721 if (r < 0 && r != -ENODEV)
3724 *flags &= ~CRYPT_ACTIVATE_REFRESH;
3729 static int _create_device_with_integrity(struct crypt_device *cd,
3730 const char *type, const char *name, const char *iname,
3731 const char *ipath, struct crypt_dm_active_device *dmd,
3732 struct crypt_dm_active_device *dmdi)
3735 enum devcheck device_check;
3736 struct dm_target *tgt;
3737 struct device *device = NULL;
3739 if (!single_segment(dmd))
3742 tgt = &dmd->segment;
3743 if (tgt->type != DM_CRYPT)
3746 device_check = dmd->flags & CRYPT_ACTIVATE_SHARED ? DEV_OK : DEV_EXCL;
3748 r = INTEGRITY_activate_dmd_device(cd, iname, CRYPT_INTEGRITY, dmdi, 0);
3752 r = device_alloc(cd, &device, ipath);
3755 tgt->data_device = device;
3757 r = device_block_adjust(cd, tgt->data_device, device_check,
3758 tgt->u.crypt.offset, &dmd->size, &dmd->flags);
3761 r = dm_create_device(cd, name, type, dmd);
3764 dm_remove_device(cd, iname, 0);
3766 device_free(cd, device);
3770 static int kernel_keyring_support(void)
3772 static unsigned _checked = 0;
3775 _kernel_keyring_supported = keyring_check();
3779 return _kernel_keyring_supported;
3782 static int dmcrypt_keyring_bug(void)
3786 if (kernel_version(&kversion))
3788 return kversion < version(4,15,0,0);
3791 int create_or_reload_device(struct crypt_device *cd, const char *name,
3792 const char *type, struct crypt_dm_active_device *dmd)
3795 enum devcheck device_check;
3796 struct dm_target *tgt;
3798 if (!type || !name || !single_segment(dmd))
3801 tgt = &dmd->segment;
3802 if (tgt->type != DM_CRYPT)
3805 /* drop CRYPT_ACTIVATE_REFRESH flag if any device is inactive */
3806 r = check_devices(cd, name, NULL, &dmd->flags);
3810 if (dmd->flags & CRYPT_ACTIVATE_REFRESH)
3811 r = _reload_device(cd, name, dmd);
3813 device_check = dmd->flags & CRYPT_ACTIVATE_SHARED ? DEV_OK : DEV_EXCL;
3815 r = device_block_adjust(cd, tgt->data_device, device_check,
3816 tgt->u.crypt.offset, &dmd->size, &dmd->flags);
3818 tgt->size = dmd->size;
3819 r = dm_create_device(cd, name, type, dmd);
3826 int create_or_reload_device_with_integrity(struct crypt_device *cd, const char *name,
3827 const char *type, struct crypt_dm_active_device *dmd,
3828 struct crypt_dm_active_device *dmdi)
3831 const char *iname = NULL;
3834 if (!type || !name || !dmd || !dmdi)
3837 if (asprintf(&ipath, "%s/%s_dif", dm_get_dir(), name) < 0)
3839 iname = ipath + strlen(dm_get_dir()) + 1;
3841 /* drop CRYPT_ACTIVATE_REFRESH flag if any device is inactive */
3842 r = check_devices(cd, name, iname, &dmd->flags);
3846 if (dmd->flags & CRYPT_ACTIVATE_REFRESH)
3847 r = _reload_device_with_integrity(cd, name, iname, ipath, dmd, dmdi);
3849 r = _create_device_with_integrity(cd, type, name, iname, ipath, dmd, dmdi);
3856 static int load_all_keys(struct crypt_device *cd, struct luks2_hdr *hdr, struct volume_key *vks)
3859 struct volume_key *vk = vks;
3862 r = LUKS2_volume_key_load_in_keyring_by_digest(cd, hdr, vk, crypt_volume_key_get_id(vk));
3865 vk = crypt_volume_key_next(vk);
3871 /* See fixmes in _open_and_activate_luks2 */
3872 int update_reencryption_flag(struct crypt_device *cd, int enable, bool commit);
3874 /* TODO: This function should 1:1 with pre-reencryption code */
3875 static int _open_and_activate(struct crypt_device *cd,
3878 const char *passphrase,
3879 size_t passphrase_size,
3883 struct volume_key *vk = NULL;
3885 r = LUKS2_keyslot_open(cd, keyslot,
3886 (flags & CRYPT_ACTIVATE_ALLOW_UNBOUND_KEY) ?
3887 CRYPT_ANY_SEGMENT : CRYPT_DEFAULT_SEGMENT,
3888 passphrase, passphrase_size, &vk);
3893 if ((name || (flags & CRYPT_ACTIVATE_KEYRING_KEY)) &&
3894 crypt_use_keyring_for_vk(cd)) {
3895 r = LUKS2_volume_key_load_in_keyring_by_keyslot(cd,
3896 &cd->u.luks2.hdr, vk, keyslot);
3899 flags |= CRYPT_ACTIVATE_KEYRING_KEY;
3903 r = LUKS2_activate(cd, name, vk, flags);
3906 crypt_drop_keyring_key(cd, vk);
3907 crypt_free_volume_key(vk);
3909 return r < 0 ? r : keyslot;
3912 static int _open_all_keys(struct crypt_device *cd,
3913 struct luks2_hdr *hdr,
3915 const char *passphrase,
3916 size_t passphrase_size,
3918 struct volume_key **vks)
3921 struct volume_key *_vks = NULL;
3922 crypt_reencrypt_info ri = LUKS2_reenc_status(hdr);
3924 segment = (flags & CRYPT_ACTIVATE_ALLOW_UNBOUND_KEY) ? CRYPT_ANY_SEGMENT : CRYPT_DEFAULT_SEGMENT;
3927 case CRYPT_REENCRYPT_NONE:
3928 r = LUKS2_keyslot_open(cd, keyslot, segment, passphrase, passphrase_size, &_vks);
3930 case CRYPT_REENCRYPT_CLEAN:
3931 case CRYPT_REENCRYPT_CRASH:
3932 if (segment == CRYPT_ANY_SEGMENT)
3933 r = LUKS2_keyslot_open(cd, keyslot, segment, passphrase,
3934 passphrase_size, &_vks);
3936 r = LUKS2_keyslot_open_all_segments(cd, keyslot,
3937 keyslot, passphrase, passphrase_size,
3944 if (keyslot == CRYPT_ANY_SLOT)
3947 if (r >= 0 && (flags & CRYPT_ACTIVATE_KEYRING_KEY))
3948 r = load_all_keys(cd, hdr, _vks);
3951 MOVE_REF(*vks, _vks);
3954 crypt_drop_keyring_key(cd, _vks);
3955 crypt_free_volume_key(_vks);
3957 return r < 0 ? r : keyslot;
3960 static int _open_and_activate_reencrypt_device(struct crypt_device *cd,
3961 struct luks2_hdr *hdr,
3964 const char *passphrase,
3965 size_t passphrase_size,
3969 crypt_reencrypt_info ri;
3970 uint64_t minimal_size, device_size;
3971 struct volume_key *vks = NULL;
3973 struct crypt_lock_handle *reencrypt_lock = NULL;
3975 if (crypt_use_keyring_for_vk(cd))
3976 flags |= CRYPT_ACTIVATE_KEYRING_KEY;
3978 r = crypt_reencrypt_lock(cd, &reencrypt_lock);
3981 log_err(cd, _("Reencryption in-progress. Cannot activate device."));
3983 log_err(cd, _("Failed to get reencryption lock."));
3987 if ((r = crypt_load(cd, CRYPT_LUKS2, NULL)))
3990 ri = LUKS2_reenc_status(hdr);
3992 if (ri == CRYPT_REENCRYPT_CRASH) {
3993 r = LUKS2_reencrypt_locked_recovery_by_passphrase(cd, keyslot,
3994 keyslot, passphrase, passphrase_size, flags, &vks);
3996 log_err(cd, _("LUKS2 reencryption recovery failed."));
4001 ri = LUKS2_reenc_status(hdr);
4004 /* recovery finished reencryption or it's already finished */
4005 if (ri == CRYPT_REENCRYPT_NONE) {
4006 crypt_drop_keyring_key(cd, vks);
4007 crypt_free_volume_key(vks);
4008 crypt_reencrypt_unlock(cd, reencrypt_lock);
4009 return _open_and_activate(cd, keyslot, name, passphrase, passphrase_size, flags);
4012 if (ri > CRYPT_REENCRYPT_CLEAN) {
4017 if (LUKS2_get_data_size(hdr, &minimal_size, &dynamic_size))
4021 r = _open_all_keys(cd, hdr, keyslot, passphrase, passphrase_size, flags, &vks);
4026 log_dbg(cd, "Entering clean reencryption state mode.");
4029 r = luks2_check_device_size(cd, hdr, minimal_size, &device_size, true, dynamic_size);
4032 r = LUKS2_activate_multi(cd, name, vks, device_size >> SECTOR_SHIFT, flags);
4034 crypt_reencrypt_unlock(cd, reencrypt_lock);
4036 crypt_drop_keyring_key(cd, vks);
4037 crypt_free_volume_key(vks);
4039 return r < 0 ? r : keyslot;
4043 * Activation/deactivation of a device
4045 static int _open_and_activate_luks2(struct crypt_device *cd,
4048 const char *passphrase,
4049 size_t passphrase_size,
4052 crypt_reencrypt_info ri;
4054 struct luks2_hdr *hdr = &cd->u.luks2.hdr;
4056 ri = LUKS2_reenc_status(hdr);
4057 if (ri == CRYPT_REENCRYPT_INVALID)
4060 if (ri > CRYPT_REENCRYPT_NONE) {
4062 r = _open_and_activate_reencrypt_device(cd, hdr, keyslot, name, passphrase,
4063 passphrase_size, flags);
4065 r = _open_all_keys(cd, hdr, keyslot, passphrase,
4066 passphrase_size, flags, NULL);
4068 r = _open_and_activate(cd, keyslot, name, passphrase,
4069 passphrase_size, flags);
4074 static int _activate_by_passphrase(struct crypt_device *cd,
4077 const char *passphrase,
4078 size_t passphrase_size,
4082 struct volume_key *vk = NULL;
4084 if ((flags & CRYPT_ACTIVATE_KEYRING_KEY) && !crypt_use_keyring_for_vk(cd))
4087 if ((flags & CRYPT_ACTIVATE_ALLOW_UNBOUND_KEY) && name)
4090 r = _check_header_data_overlap(cd, name);
4094 if (flags & CRYPT_ACTIVATE_SERIALIZE_MEMORY_HARD_PBKDF)
4095 cd->memory_hard_pbkdf_lock_enabled = true;
4097 /* plain, use hashed passphrase */
4098 if (isPLAIN(cd->type)) {
4103 r = process_key(cd, cd->u.plain.hdr.hash,
4104 cd->u.plain.key_size,
4105 passphrase, passphrase_size, &vk);
4109 r = PLAIN_activate(cd, name, vk, cd->u.plain.hdr.size, flags);
4111 } else if (isLUKS1(cd->type)) {
4112 r = LUKS_open_key_with_hdr(keyslot, passphrase,
4113 passphrase_size, &cd->u.luks1.hdr, &vk, cd);
4117 r = LUKS1_activate(cd, name, vk, flags);
4119 } else if (isLUKS2(cd->type)) {
4120 r = _open_and_activate_luks2(cd, keyslot, name, passphrase, passphrase_size, flags);
4122 } else if (isBITLK(cd->type)) {
4123 r = BITLK_activate(cd, name, passphrase, passphrase_size,
4124 &cd->u.bitlk.params, flags);
4127 log_err(cd, _("Device type is not properly initialized."));
4132 crypt_drop_keyring_key(cd, vk);
4133 crypt_free_volume_key(vk);
4135 cd->memory_hard_pbkdf_lock_enabled = false;
4137 return r < 0 ? r : keyslot;
4140 static int _activate_loopaes(struct crypt_device *cd,
4147 unsigned int key_count = 0;
4148 struct volume_key *vk = NULL;
4150 r = LOOPAES_parse_keyfile(cd, &vk, cd->u.loopaes.hdr.hash, &key_count,
4151 buffer, buffer_size);
4154 r = LOOPAES_activate(cd, name, cd->u.loopaes.cipher, key_count,
4157 crypt_free_volume_key(vk);
4162 static int _activate_check_status(struct crypt_device *cd, const char *name, unsigned reload)
4164 crypt_status_info ci;
4169 ci = crypt_status(cd, name);
4170 if (ci == CRYPT_INVALID) {
4171 log_err(cd, _("Cannot use device %s, name is invalid or still in use."), name);
4173 } else if (ci >= CRYPT_ACTIVE && !reload) {
4174 log_err(cd, _("Device %s already exists."), name);
4181 // activation/deactivation of device mapping
4182 int crypt_activate_by_passphrase(struct crypt_device *cd,
4185 const char *passphrase,
4186 size_t passphrase_size,
4191 if (!cd || !passphrase || (!name && (flags & CRYPT_ACTIVATE_REFRESH)))
4194 log_dbg(cd, "%s volume %s [keyslot %d] using passphrase.",
4195 name ? "Activating" : "Checking", name ?: "passphrase",
4198 r = _activate_check_status(cd, name, flags & CRYPT_ACTIVATE_REFRESH);
4202 return _activate_by_passphrase(cd, name, keyslot, passphrase, passphrase_size, flags);
4205 int crypt_activate_by_keyfile_device_offset(struct crypt_device *cd,
4208 const char *keyfile,
4209 size_t keyfile_size,
4210 uint64_t keyfile_offset,
4213 char *passphrase_read = NULL;
4214 size_t passphrase_size_read;
4217 if (!cd || !keyfile ||
4218 ((flags & CRYPT_ACTIVATE_KEYRING_KEY) && !crypt_use_keyring_for_vk(cd)))
4221 log_dbg(cd, "%s volume %s [keyslot %d] using keyfile %s.",
4222 name ? "Activating" : "Checking", name ?: "passphrase", keyslot, keyfile);
4224 r = _activate_check_status(cd, name, flags & CRYPT_ACTIVATE_REFRESH);
4228 r = crypt_keyfile_device_read(cd, keyfile,
4229 &passphrase_read, &passphrase_size_read,
4230 keyfile_offset, keyfile_size, 0);
4234 if (isLOOPAES(cd->type))
4235 r = _activate_loopaes(cd, name, passphrase_read, passphrase_size_read, flags);
4237 r = _activate_by_passphrase(cd, name, keyslot, passphrase_read, passphrase_size_read, flags);
4240 crypt_safe_free(passphrase_read);
4244 int crypt_activate_by_keyfile(struct crypt_device *cd,
4247 const char *keyfile,
4248 size_t keyfile_size,
4251 return crypt_activate_by_keyfile_device_offset(cd, name, keyslot, keyfile,
4252 keyfile_size, 0, flags);
4255 int crypt_activate_by_keyfile_offset(struct crypt_device *cd,
4258 const char *keyfile,
4259 size_t keyfile_size,
4260 size_t keyfile_offset,
4263 return crypt_activate_by_keyfile_device_offset(cd, name, keyslot, keyfile,
4264 keyfile_size, keyfile_offset, flags);
4266 int crypt_activate_by_volume_key(struct crypt_device *cd,
4268 const char *volume_key,
4269 size_t volume_key_size,
4272 struct volume_key *vk = NULL;
4276 ((flags & CRYPT_ACTIVATE_KEYRING_KEY) && !crypt_use_keyring_for_vk(cd)))
4279 log_dbg(cd, "%s volume %s by volume key.", name ? "Activating" : "Checking",
4282 r = _activate_check_status(cd, name, flags & CRYPT_ACTIVATE_REFRESH);
4286 r = _check_header_data_overlap(cd, name);
4290 /* use key directly, no hash */
4291 if (isPLAIN(cd->type)) {
4295 if (!volume_key || !volume_key_size || volume_key_size != cd->u.plain.key_size) {
4296 log_err(cd, _("Incorrect volume key specified for plain device."));
4300 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
4304 r = PLAIN_activate(cd, name, vk, cd->u.plain.hdr.size, flags);
4305 } else if (isLUKS1(cd->type)) {
4306 /* If key is not provided, try to use internal key */
4308 if (!cd->volume_key) {
4309 log_err(cd, _("Volume key does not match the volume."));
4312 volume_key_size = cd->volume_key->keylength;
4313 volume_key = cd->volume_key->key;
4316 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
4319 r = LUKS_verify_volume_key(&cd->u.luks1.hdr, vk);
4322 log_err(cd, _("Volume key does not match the volume."));
4325 r = LUKS1_activate(cd, name, vk, flags);
4326 } else if (isLUKS2(cd->type)) {
4327 /* If key is not provided, try to use internal key */
4329 if (!cd->volume_key) {
4330 log_err(cd, _("Volume key does not match the volume."));
4333 volume_key_size = cd->volume_key->keylength;
4334 volume_key = cd->volume_key->key;
4337 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
4341 r = LUKS2_digest_verify_by_segment(cd, &cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT, vk);
4342 if (r == -EPERM || r == -ENOENT)
4343 log_err(cd, _("Volume key does not match the volume."));
4347 if (!r && (name || (flags & CRYPT_ACTIVATE_KEYRING_KEY)) &&
4348 crypt_use_keyring_for_vk(cd)) {
4349 r = LUKS2_key_description_by_segment(cd,
4350 &cd->u.luks2.hdr, vk, CRYPT_DEFAULT_SEGMENT);
4352 r = crypt_volume_key_load_in_keyring(cd, vk);
4354 flags |= CRYPT_ACTIVATE_KEYRING_KEY;
4358 r = LUKS2_activate(cd, name, vk, flags);
4359 } else if (isVERITY(cd->type)) {
4360 r = crypt_activate_by_signed_key(cd, name, volume_key, volume_key_size, NULL, 0, flags);
4361 } else if (isTCRYPT(cd->type)) {
4364 r = TCRYPT_activate(cd, name, &cd->u.tcrypt.hdr,
4365 &cd->u.tcrypt.params, flags);
4366 } else if (isINTEGRITY(cd->type)) {
4370 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
4374 r = INTEGRITY_activate(cd, name, &cd->u.integrity.params, vk,
4375 cd->u.integrity.journal_crypt_key,
4376 cd->u.integrity.journal_mac_key, flags,
4377 cd->u.integrity.sb_flags);
4379 log_err(cd, _("Device type is not properly initialized."));
4384 crypt_drop_keyring_key(cd, vk);
4385 crypt_free_volume_key(vk);
4390 int crypt_activate_by_signed_key(struct crypt_device *cd,
4392 const char *volume_key,
4393 size_t volume_key_size,
4394 const char *signature,
4395 size_t signature_size,
4398 char description[512];
4401 if (!cd || !isVERITY(cd->type))
4404 if (!volume_key || !volume_key_size || (!name && signature)) {
4405 log_err(cd, _("Incorrect root hash specified for verity device."));
4409 log_dbg(cd, "%s volume %s by signed key.", name ? "Activating" : "Checking", name ?: "");
4411 if (cd->u.verity.hdr.flags & CRYPT_VERITY_ROOT_HASH_SIGNATURE && !signature) {
4412 log_err(cd, _("Root hash signature required."));
4416 r = _activate_check_status(cd, name, flags & CRYPT_ACTIVATE_REFRESH);
4420 if (signature && !kernel_keyring_support()) {
4421 log_err(cd, _("Kernel keyring missing: required for passing signature to kernel."));
4425 /* volume_key == root hash */
4426 free(CONST_CAST(void*)cd->u.verity.root_hash);
4427 cd->u.verity.root_hash = NULL;
4430 r = snprintf(description, sizeof(description)-1, "cryptsetup:%s%s%s",
4431 crypt_get_uuid(cd) ?: "", crypt_get_uuid(cd) ? "-" : "", name);
4435 log_dbg(cd, "Adding signature into keyring %s", description);
4436 r = keyring_add_key_in_thread_keyring(USER_KEY, description, signature, signature_size);
4438 log_err(cd, _("Failed to load key in kernel keyring."));
4443 r = VERITY_activate(cd, name, volume_key, volume_key_size,
4444 signature ? description : NULL,
4445 cd->u.verity.fec_device,
4446 &cd->u.verity.hdr, flags | CRYPT_ACTIVATE_READONLY);
4449 cd->u.verity.root_hash_size = volume_key_size;
4450 cd->u.verity.root_hash = malloc(volume_key_size);
4451 if (cd->u.verity.root_hash)
4452 memcpy(CONST_CAST(void*)cd->u.verity.root_hash, volume_key, volume_key_size);
4456 crypt_drop_keyring_key_by_description(cd, description, USER_KEY);
4461 int crypt_deactivate_by_name(struct crypt_device *cd, const char *name, uint32_t flags)
4463 struct crypt_device *fake_cd = NULL;
4464 struct luks2_hdr *hdr2 = NULL;
4465 struct crypt_dm_active_device dmd = {};
4467 uint32_t get_flags = DM_ACTIVE_DEVICE | DM_ACTIVE_UUID | DM_ACTIVE_HOLDERS;
4472 log_dbg(cd, "Deactivating volume %s.", name);
4475 r = crypt_init_by_name(&fake_cd, name);
4481 /* skip holders detection and early abort when some flags raised */
4482 if (flags & (CRYPT_DEACTIVATE_FORCE | CRYPT_DEACTIVATE_DEFERRED))
4483 get_flags &= ~DM_ACTIVE_HOLDERS;
4485 switch (crypt_status(cd, name)) {
4488 r = dm_query_device(cd, name, get_flags, &dmd);
4491 log_err(cd, _("Device %s is still in use."), name);
4497 if (isLUKS2(cd->type))
4498 hdr2 = crypt_get_hdr(cd, CRYPT_LUKS2);
4500 if ((dmd.uuid && !strncmp(CRYPT_LUKS2, dmd.uuid, sizeof(CRYPT_LUKS2)-1)) || hdr2)
4501 r = LUKS2_deactivate(cd, name, hdr2, &dmd, flags);
4502 else if (isTCRYPT(cd->type))
4503 r = TCRYPT_deactivate(cd, name, flags);
4505 r = dm_remove_device(cd, name, flags);
4506 if (r < 0 && crypt_status(cd, name) == CRYPT_BUSY) {
4507 log_err(cd, _("Device %s is still in use."), name);
4511 case CRYPT_INACTIVE:
4512 log_err(cd, _("Device %s is not active."), name);
4516 log_err(cd, _("Invalid device %s."), name);
4520 dm_targets_free(cd, &dmd);
4521 free(CONST_CAST(void*)dmd.uuid);
4522 crypt_free(fake_cd);
4527 int crypt_deactivate(struct crypt_device *cd, const char *name)
4529 return crypt_deactivate_by_name(cd, name, 0);
4532 int crypt_get_active_device(struct crypt_device *cd, const char *name,
4533 struct crypt_active_device *cad)
4536 struct crypt_dm_active_device dmd, dmdi = {};
4537 const char *namei = NULL;
4538 struct dm_target *tgt = &dmd.segment;
4539 uint64_t min_offset = UINT64_MAX;
4541 if (!cd || !name || !cad)
4544 r = dm_query_device(cd, name, DM_ACTIVE_DEVICE, &dmd);
4548 /* For LUKS2 with integrity we need flags from underlying dm-integrity */
4549 if (isLUKS2(cd->type) && crypt_get_integrity_tag_size(cd) && single_segment(&dmd)) {
4550 namei = device_dm_name(tgt->data_device);
4551 if (namei && dm_query_device(cd, namei, 0, &dmdi) >= 0)
4552 dmd.flags |= dmdi.flags;
4555 if (cd && isTCRYPT(cd->type)) {
4556 cad->offset = TCRYPT_get_data_offset(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
4557 cad->iv_offset = TCRYPT_get_iv_offset(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
4560 if (tgt->type == DM_CRYPT && (min_offset > tgt->u.crypt.offset)) {
4561 min_offset = tgt->u.crypt.offset;
4562 cad->iv_offset = tgt->u.crypt.iv_offset;
4563 } else if (tgt->type == DM_INTEGRITY && (min_offset > tgt->u.integrity.offset)) {
4564 min_offset = tgt->u.integrity.offset;
4566 } else if (tgt->type == DM_LINEAR && (min_offset > tgt->u.linear.offset)) {
4567 min_offset = tgt->u.linear.offset;
4574 if (min_offset != UINT64_MAX)
4575 cad->offset = min_offset;
4577 cad->size = dmd.size;
4578 cad->flags = dmd.flags;
4581 dm_targets_free(cd, &dmd);
4582 dm_targets_free(cd, &dmdi);
4587 uint64_t crypt_get_active_integrity_failures(struct crypt_device *cd, const char *name)
4589 struct crypt_dm_active_device dmd;
4590 uint64_t failures = 0;
4595 /* FIXME: LUKS2 / dm-crypt does not provide this count. */
4596 if (dm_query_device(cd, name, 0, &dmd) < 0)
4599 if (single_segment(&dmd) && dmd.segment.type == DM_INTEGRITY)
4600 (void)dm_status_integrity_failures(cd, name, &failures);
4602 dm_targets_free(cd, &dmd);
4608 * Volume key handling
4610 int crypt_volume_key_get(struct crypt_device *cd,
4613 size_t *volume_key_size,
4614 const char *passphrase,
4615 size_t passphrase_size)
4617 struct volume_key *vk = NULL;
4618 int key_len, r = -EINVAL;
4620 if (!cd || !volume_key || !volume_key_size || (!isTCRYPT(cd->type) && !isVERITY(cd->type) && !passphrase))
4623 if (isLUKS2(cd->type) && keyslot != CRYPT_ANY_SLOT)
4624 key_len = LUKS2_get_keyslot_stored_key_size(&cd->u.luks2.hdr, keyslot);
4626 key_len = crypt_get_volume_key_size(cd);
4631 if (key_len > (int)*volume_key_size) {
4632 log_err(cd, _("Volume key buffer too small."));
4636 if (isPLAIN(cd->type) && cd->u.plain.hdr.hash) {
4637 r = process_key(cd, cd->u.plain.hdr.hash, key_len,
4638 passphrase, passphrase_size, &vk);
4640 log_err(cd, _("Cannot retrieve volume key for plain device."));
4641 } else if (isLUKS1(cd->type)) {
4642 r = LUKS_open_key_with_hdr(keyslot, passphrase,
4643 passphrase_size, &cd->u.luks1.hdr, &vk, cd);
4644 } else if (isLUKS2(cd->type)) {
4645 r = LUKS2_keyslot_open(cd, keyslot,
4646 keyslot == CRYPT_ANY_SLOT ? CRYPT_DEFAULT_SEGMENT : CRYPT_ANY_SEGMENT,
4647 passphrase, passphrase_size, &vk);
4648 } else if (isTCRYPT(cd->type)) {
4649 r = TCRYPT_get_volume_key(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params, &vk);
4650 } else if (isVERITY(cd->type)) {
4651 /* volume_key == root hash */
4652 if (cd->u.verity.root_hash) {
4653 memcpy(volume_key, cd->u.verity.root_hash, cd->u.verity.root_hash_size);
4654 *volume_key_size = cd->u.verity.root_hash_size;
4657 log_err(cd, _("Cannot retrieve root hash for verity device."));
4659 log_err(cd, _("This operation is not supported for %s crypt device."), cd->type ?: "(none)");
4662 memcpy(volume_key, vk->key, vk->keylength);
4663 *volume_key_size = vk->keylength;
4666 crypt_free_volume_key(vk);
4670 int crypt_volume_key_verify(struct crypt_device *cd,
4671 const char *volume_key,
4672 size_t volume_key_size)
4674 struct volume_key *vk;
4677 if ((r = _onlyLUKS(cd, CRYPT_CD_UNRESTRICTED)))
4680 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
4684 if (isLUKS1(cd->type))
4685 r = LUKS_verify_volume_key(&cd->u.luks1.hdr, vk);
4686 else if (isLUKS2(cd->type))
4687 r = LUKS2_digest_verify_by_segment(cd, &cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT, vk);
4693 log_err(cd, _("Volume key does not match the volume."));
4695 crypt_free_volume_key(vk);
4697 return r >= 0 ? 0 : r;
4701 * RNG and memory locking
4703 void crypt_set_rng_type(struct crypt_device *cd, int rng_type)
4709 case CRYPT_RNG_URANDOM:
4710 case CRYPT_RNG_RANDOM:
4711 log_dbg(cd, "RNG set to %d (%s).", rng_type, rng_type ? "random" : "urandom");
4712 cd->rng_type = rng_type;
4716 int crypt_get_rng_type(struct crypt_device *cd)
4721 return cd->rng_type;
4724 int crypt_memory_lock(struct crypt_device *cd, int lock)
4726 return lock ? crypt_memlock_inc(cd) : crypt_memlock_dec(cd);
4729 void crypt_set_compatibility(struct crypt_device *cd, uint32_t flags)
4732 cd->compatibility = flags;
4735 uint32_t crypt_get_compatibility(struct crypt_device *cd)
4738 return cd->compatibility;
4746 crypt_status_info crypt_status(struct crypt_device *cd, const char *name)
4751 return CRYPT_INVALID;
4754 dm_backend_init(cd);
4756 r = dm_status_device(cd, name);
4759 dm_backend_exit(cd);
4761 if (r < 0 && r != -ENODEV)
4762 return CRYPT_INVALID;
4765 return CRYPT_ACTIVE;
4770 return CRYPT_INACTIVE;
4773 static void hexprint(struct crypt_device *cd, const char *d, int n, const char *sep)
4776 for(i = 0; i < n; i++)
4777 log_std(cd, "%02hhx%s", (const char)d[i], sep);
4780 static int _luks_dump(struct crypt_device *cd)
4784 log_std(cd, "LUKS header information for %s\n\n", mdata_device_path(cd));
4785 log_std(cd, "Version: \t%" PRIu16 "\n", cd->u.luks1.hdr.version);
4786 log_std(cd, "Cipher name: \t%s\n", cd->u.luks1.hdr.cipherName);
4787 log_std(cd, "Cipher mode: \t%s\n", cd->u.luks1.hdr.cipherMode);
4788 log_std(cd, "Hash spec: \t%s\n", cd->u.luks1.hdr.hashSpec);
4789 log_std(cd, "Payload offset:\t%" PRIu32 "\n", cd->u.luks1.hdr.payloadOffset);
4790 log_std(cd, "MK bits: \t%" PRIu32 "\n", cd->u.luks1.hdr.keyBytes * 8);
4791 log_std(cd, "MK digest: \t");
4792 hexprint(cd, cd->u.luks1.hdr.mkDigest, LUKS_DIGESTSIZE, " ");
4794 log_std(cd, "MK salt: \t");
4795 hexprint(cd, cd->u.luks1.hdr.mkDigestSalt, LUKS_SALTSIZE/2, " ");
4796 log_std(cd, "\n \t");
4797 hexprint(cd, cd->u.luks1.hdr.mkDigestSalt+LUKS_SALTSIZE/2, LUKS_SALTSIZE/2, " ");
4799 log_std(cd, "MK iterations: \t%" PRIu32 "\n", cd->u.luks1.hdr.mkDigestIterations);
4800 log_std(cd, "UUID: \t%s\n\n", cd->u.luks1.hdr.uuid);
4801 for(i = 0; i < LUKS_NUMKEYS; i++) {
4802 if(cd->u.luks1.hdr.keyblock[i].active == LUKS_KEY_ENABLED) {
4803 log_std(cd, "Key Slot %d: ENABLED\n",i);
4804 log_std(cd, "\tIterations: \t%" PRIu32 "\n",
4805 cd->u.luks1.hdr.keyblock[i].passwordIterations);
4806 log_std(cd, "\tSalt: \t");
4807 hexprint(cd, cd->u.luks1.hdr.keyblock[i].passwordSalt,
4808 LUKS_SALTSIZE/2, " ");
4809 log_std(cd, "\n\t \t");
4810 hexprint(cd, cd->u.luks1.hdr.keyblock[i].passwordSalt +
4811 LUKS_SALTSIZE/2, LUKS_SALTSIZE/2, " ");
4814 log_std(cd, "\tKey material offset:\t%" PRIu32 "\n",
4815 cd->u.luks1.hdr.keyblock[i].keyMaterialOffset);
4816 log_std(cd, "\tAF stripes: \t%" PRIu32 "\n",
4817 cd->u.luks1.hdr.keyblock[i].stripes);
4820 log_std(cd, "Key Slot %d: DISABLED\n", i);
4825 static int _verity_dump(struct crypt_device *cd)
4827 log_std(cd, "VERITY header information for %s\n", mdata_device_path(cd));
4828 log_std(cd, "UUID: \t%s\n", cd->u.verity.uuid ?: "");
4829 log_std(cd, "Hash type: \t%u\n", cd->u.verity.hdr.hash_type);
4830 log_std(cd, "Data blocks: \t%" PRIu64 "\n", cd->u.verity.hdr.data_size);
4831 log_std(cd, "Data block size: \t%u\n", cd->u.verity.hdr.data_block_size);
4832 log_std(cd, "Hash block size: \t%u\n", cd->u.verity.hdr.hash_block_size);
4833 log_std(cd, "Hash algorithm: \t%s\n", cd->u.verity.hdr.hash_name);
4834 log_std(cd, "Salt: \t");
4835 if (cd->u.verity.hdr.salt_size)
4836 hexprint(cd, cd->u.verity.hdr.salt, cd->u.verity.hdr.salt_size, "");
4840 if (cd->u.verity.root_hash) {
4841 log_std(cd, "Root hash: \t");
4842 hexprint(cd, cd->u.verity.root_hash, cd->u.verity.root_hash_size, "");
4848 int crypt_dump(struct crypt_device *cd)
4852 if (isLUKS1(cd->type))
4853 return _luks_dump(cd);
4854 else if (isLUKS2(cd->type))
4855 return LUKS2_hdr_dump(cd, &cd->u.luks2.hdr);
4856 else if (isVERITY(cd->type))
4857 return _verity_dump(cd);
4858 else if (isTCRYPT(cd->type))
4859 return TCRYPT_dump(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
4860 else if (isINTEGRITY(cd->type))
4861 return INTEGRITY_dump(cd, crypt_data_device(cd), 0);
4862 else if (isBITLK(cd->type))
4863 return BITLK_dump(cd, crypt_data_device(cd), &cd->u.bitlk.params);
4865 log_err(cd, _("Dump operation is not supported for this device type."));
4870 const char *crypt_get_cipher_spec(struct crypt_device *cd)
4874 else if (isLUKS2(cd->type))
4875 return LUKS2_get_cipher(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT);
4876 else if (isLUKS1(cd->type))
4877 return cd->u.luks1.cipher_spec;
4878 else if (isPLAIN(cd->type))
4879 return cd->u.plain.cipher_spec;
4880 else if (isLOOPAES(cd->type))
4881 return cd->u.loopaes.cipher_spec;
4882 else if (isBITLK(cd->type))
4883 return cd->u.bitlk.cipher_spec;
4884 else if (!cd->type && !_init_by_name_crypt_none(cd))
4885 return cd->u.none.cipher_spec;
4890 const char *crypt_get_cipher(struct crypt_device *cd)
4895 if (isPLAIN(cd->type))
4896 return cd->u.plain.cipher;
4898 if (isLUKS1(cd->type))
4899 return cd->u.luks1.hdr.cipherName;
4901 if (isLUKS2(cd->type)) {
4902 if (crypt_parse_name_and_mode(LUKS2_get_cipher(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT),
4903 cd->u.luks2.cipher, NULL, cd->u.luks2.cipher_mode))
4905 return cd->u.luks2.cipher;
4908 if (isLOOPAES(cd->type))
4909 return cd->u.loopaes.cipher;
4911 if (isTCRYPT(cd->type))
4912 return cd->u.tcrypt.params.cipher;
4914 if (isBITLK(cd->type))
4915 return cd->u.bitlk.params.cipher;
4917 if (!cd->type && !_init_by_name_crypt_none(cd))
4918 return cd->u.none.cipher;
4923 const char *crypt_get_cipher_mode(struct crypt_device *cd)
4928 if (isPLAIN(cd->type))
4929 return cd->u.plain.cipher_mode;
4931 if (isLUKS1(cd->type))
4932 return cd->u.luks1.hdr.cipherMode;
4934 if (isLUKS2(cd->type)) {
4935 if (crypt_parse_name_and_mode(LUKS2_get_cipher(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT),
4936 cd->u.luks2.cipher, NULL, cd->u.luks2.cipher_mode))
4938 return cd->u.luks2.cipher_mode;
4941 if (isLOOPAES(cd->type))
4942 return cd->u.loopaes.cipher_mode;
4944 if (isTCRYPT(cd->type))
4945 return cd->u.tcrypt.params.mode;
4947 if (isBITLK(cd->type))
4948 return cd->u.bitlk.params.cipher_mode;
4950 if (!cd->type && !_init_by_name_crypt_none(cd))
4951 return cd->u.none.cipher_mode;
4957 const char *crypt_get_integrity(struct crypt_device *cd)
4959 if (isINTEGRITY(cd->type))
4960 return cd->u.integrity.params.integrity;
4962 if (isLUKS2(cd->type))
4963 return LUKS2_get_integrity(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT);
4969 int crypt_get_integrity_key_size(struct crypt_device *cd)
4971 if (isINTEGRITY(cd->type))
4972 return INTEGRITY_key_size(cd, crypt_get_integrity(cd));
4974 if (isLUKS2(cd->type))
4975 return INTEGRITY_key_size(cd, crypt_get_integrity(cd));
4981 int crypt_get_integrity_tag_size(struct crypt_device *cd)
4983 if (isINTEGRITY(cd->type))
4984 return cd->u.integrity.params.tag_size;
4986 if (isLUKS2(cd->type))
4987 return INTEGRITY_tag_size(cd, crypt_get_integrity(cd),
4988 crypt_get_cipher(cd),
4989 crypt_get_cipher_mode(cd));
4993 int crypt_get_sector_size(struct crypt_device *cd)
4998 if (isPLAIN(cd->type))
4999 return cd->u.plain.hdr.sector_size;
5001 if (isINTEGRITY(cd->type))
5002 return cd->u.integrity.params.sector_size;
5004 if (isLUKS2(cd->type))
5005 return LUKS2_get_sector_size(&cd->u.luks2.hdr);
5010 const char *crypt_get_uuid(struct crypt_device *cd)
5015 if (isLUKS1(cd->type))
5016 return cd->u.luks1.hdr.uuid;
5018 if (isLUKS2(cd->type))
5019 return cd->u.luks2.hdr.uuid;
5021 if (isVERITY(cd->type))
5022 return cd->u.verity.uuid;
5024 if (isBITLK(cd->type))
5025 return cd->u.bitlk.params.guid;
5030 const char *crypt_get_device_name(struct crypt_device *cd)
5037 path = device_block_path(cd->device);
5039 path = device_path(cd->device);
5044 const char *crypt_get_metadata_device_name(struct crypt_device *cd)
5048 if (!cd || !cd->metadata_device)
5051 path = device_block_path(cd->metadata_device);
5053 path = device_path(cd->metadata_device);
5058 int crypt_get_volume_key_size(struct crypt_device *cd)
5065 if (isPLAIN(cd->type))
5066 return cd->u.plain.key_size;
5068 if (isLUKS1(cd->type))
5069 return cd->u.luks1.hdr.keyBytes;
5071 if (isLUKS2(cd->type)) {
5072 r = LUKS2_get_volume_key_size(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT);
5073 if (r < 0 && cd->volume_key)
5074 r = cd->volume_key->keylength;
5075 return r < 0 ? 0 : r;
5078 if (isLOOPAES(cd->type))
5079 return cd->u.loopaes.key_size;
5081 if (isVERITY(cd->type))
5082 return cd->u.verity.root_hash_size;
5084 if (isTCRYPT(cd->type))
5085 return cd->u.tcrypt.params.key_size;
5087 if (isBITLK(cd->type))
5088 return cd->u.bitlk.params.key_size / 8;
5090 if (!cd->type && !_init_by_name_crypt_none(cd))
5091 return cd->u.none.key_size;
5096 int crypt_keyslot_get_key_size(struct crypt_device *cd, int keyslot)
5098 if (!cd || !isLUKS(cd->type))
5101 if (keyslot < 0 || keyslot >= crypt_keyslot_max(cd->type))
5104 if (isLUKS1(cd->type))
5105 return cd->u.luks1.hdr.keyBytes;
5107 if (isLUKS2(cd->type))
5108 return LUKS2_get_keyslot_stored_key_size(&cd->u.luks2.hdr, keyslot);
5113 int crypt_keyslot_set_encryption(struct crypt_device *cd,
5119 if (!cd || !cipher || ! key_size || !isLUKS2(cd->type))
5122 if (LUKS2_keyslot_cipher_incompatible(cd, cipher))
5125 tmp = strdup(cipher);
5126 free(cd->u.luks2.keyslot_cipher);
5127 cd->u.luks2.keyslot_cipher = tmp;
5128 if (!cd->u.luks2.keyslot_cipher)
5130 cd->u.luks2.keyslot_key_size = key_size;
5135 const char *crypt_keyslot_get_encryption(struct crypt_device *cd, int keyslot, size_t *key_size)
5139 if (!cd || !isLUKS(cd->type) || !key_size)
5142 if (isLUKS1(cd->type)) {
5143 if (keyslot != CRYPT_ANY_SLOT &&
5144 LUKS_keyslot_info(&cd->u.luks1.hdr, keyslot) < CRYPT_SLOT_ACTIVE)
5146 *key_size = crypt_get_volume_key_size(cd);
5147 return cd->u.luks1.cipher_spec;
5150 if (keyslot != CRYPT_ANY_SLOT)
5151 return LUKS2_get_keyslot_cipher(&cd->u.luks2.hdr, keyslot, key_size);
5153 /* Keyslot encryption was set through crypt_keyslot_set_encryption() */
5154 if (cd->u.luks2.keyslot_cipher) {
5155 *key_size = cd->u.luks2.keyslot_key_size;
5156 return cd->u.luks2.keyslot_cipher;
5159 /* Try to reuse volume encryption parameters */
5160 cipher = LUKS2_get_cipher(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT);
5161 if (!LUKS2_keyslot_cipher_incompatible(cd, cipher)) {
5162 *key_size = crypt_get_volume_key_size(cd);
5167 /* Fallback to default LUKS2 keyslot encryption */
5168 *key_size = DEFAULT_LUKS2_KEYSLOT_KEYBITS / 8;
5169 return DEFAULT_LUKS2_KEYSLOT_CIPHER;
5172 int crypt_keyslot_get_pbkdf(struct crypt_device *cd, int keyslot, struct crypt_pbkdf_type *pbkdf)
5174 if (!cd || !pbkdf || keyslot == CRYPT_ANY_SLOT)
5177 if (isLUKS1(cd->type))
5178 return LUKS_keyslot_pbkdf(&cd->u.luks1.hdr, keyslot, pbkdf);
5179 else if (isLUKS2(cd->type))
5180 return LUKS2_keyslot_pbkdf(&cd->u.luks2.hdr, keyslot, pbkdf);
5185 int crypt_set_data_offset(struct crypt_device *cd, uint64_t data_offset)
5189 if (data_offset % (MAX_SECTOR_SIZE >> SECTOR_SHIFT)) {
5190 log_err(cd, _("Data offset is not multiple of %u bytes."), MAX_SECTOR_SIZE);
5194 cd->data_offset = data_offset;
5195 log_dbg(cd, "Data offset set to %" PRIu64 " (512-byte) sectors.", data_offset);
5200 int crypt_set_metadata_size(struct crypt_device *cd,
5201 uint64_t metadata_size,
5202 uint64_t keyslots_size)
5207 if (cd->type && !isLUKS2(cd->type))
5210 if (metadata_size && LUKS2_check_metadata_area_size(metadata_size))
5213 if (keyslots_size && LUKS2_check_keyslots_area_size(keyslots_size))
5216 cd->metadata_size = metadata_size;
5217 cd->keyslots_size = keyslots_size;
5222 int crypt_get_metadata_size(struct crypt_device *cd,
5223 uint64_t *metadata_size,
5224 uint64_t *keyslots_size)
5226 uint64_t msize, ksize;
5232 msize = cd->metadata_size;
5233 ksize = cd->keyslots_size;
5234 } else if (isLUKS1(cd->type)) {
5235 msize = LUKS_ALIGN_KEYSLOTS;
5236 ksize = LUKS_device_sectors(&cd->u.luks1.hdr) * SECTOR_SIZE - msize;
5237 } else if (isLUKS2(cd->type)) {
5238 msize = LUKS2_metadata_size(cd->u.luks2.hdr.jobj);
5239 ksize = LUKS2_keyslots_size(cd->u.luks2.hdr.jobj);
5244 *metadata_size = msize;
5246 *keyslots_size = ksize;
5251 uint64_t crypt_get_data_offset(struct crypt_device *cd)
5256 if (isPLAIN(cd->type))
5257 return cd->u.plain.hdr.offset;
5259 if (isLUKS1(cd->type))
5260 return cd->u.luks1.hdr.payloadOffset;
5262 if (isLUKS2(cd->type))
5263 return LUKS2_get_data_offset(&cd->u.luks2.hdr);
5265 if (isLOOPAES(cd->type))
5266 return cd->u.loopaes.hdr.offset;
5268 if (isTCRYPT(cd->type))
5269 return TCRYPT_get_data_offset(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
5271 if (isBITLK(cd->type))
5272 return cd->u.bitlk.params.volume_header_size / SECTOR_SIZE;
5274 return cd->data_offset;
5277 uint64_t crypt_get_iv_offset(struct crypt_device *cd)
5282 if (isPLAIN(cd->type))
5283 return cd->u.plain.hdr.skip;
5285 if (isLOOPAES(cd->type))
5286 return cd->u.loopaes.hdr.skip;
5288 if (isTCRYPT(cd->type))
5289 return TCRYPT_get_iv_offset(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
5294 crypt_keyslot_info crypt_keyslot_status(struct crypt_device *cd, int keyslot)
5296 if (_onlyLUKS(cd, CRYPT_CD_QUIET | CRYPT_CD_UNRESTRICTED) < 0)
5297 return CRYPT_SLOT_INVALID;
5299 if (isLUKS1(cd->type))
5300 return LUKS_keyslot_info(&cd->u.luks1.hdr, keyslot);
5301 else if(isLUKS2(cd->type))
5302 return LUKS2_keyslot_info(&cd->u.luks2.hdr, keyslot);
5304 return CRYPT_SLOT_INVALID;
5307 int crypt_keyslot_max(const char *type)
5309 if (type && isLUKS1(type))
5310 return LUKS_NUMKEYS;
5312 if (type && isLUKS2(type))
5313 return LUKS2_KEYSLOTS_MAX;
5318 int crypt_keyslot_area(struct crypt_device *cd,
5323 if (_onlyLUKS(cd, CRYPT_CD_QUIET | CRYPT_CD_UNRESTRICTED) || !offset || !length)
5326 if (isLUKS2(cd->type))
5327 return LUKS2_keyslot_area(&cd->u.luks2.hdr, keyslot, offset, length);
5329 return LUKS_keyslot_area(&cd->u.luks1.hdr, keyslot, offset, length);
5332 crypt_keyslot_priority crypt_keyslot_get_priority(struct crypt_device *cd, int keyslot)
5334 if (_onlyLUKS(cd, CRYPT_CD_QUIET | CRYPT_CD_UNRESTRICTED))
5335 return CRYPT_SLOT_PRIORITY_INVALID;
5337 if (keyslot < 0 || keyslot >= crypt_keyslot_max(cd->type))
5338 return CRYPT_SLOT_PRIORITY_INVALID;
5340 if (isLUKS2(cd->type))
5341 return LUKS2_keyslot_priority_get(cd, &cd->u.luks2.hdr, keyslot);
5343 return CRYPT_SLOT_PRIORITY_NORMAL;
5346 int crypt_keyslot_set_priority(struct crypt_device *cd, int keyslot, crypt_keyslot_priority priority)
5350 log_dbg(cd, "Setting keyslot %d to priority %d.", keyslot, priority);
5352 if (priority == CRYPT_SLOT_PRIORITY_INVALID)
5355 if (keyslot < 0 || keyslot >= crypt_keyslot_max(cd->type))
5358 if ((r = onlyLUKS2(cd)))
5361 return LUKS2_keyslot_priority_set(cd, &cd->u.luks2.hdr, keyslot, priority, 1);
5364 const char *crypt_get_type(struct crypt_device *cd)
5366 return cd ? cd->type : NULL;
5369 const char *crypt_get_default_type(void)
5371 return DEFAULT_LUKS_FORMAT;
5374 int crypt_get_verity_info(struct crypt_device *cd,
5375 struct crypt_params_verity *vp)
5377 if (!cd || !isVERITY(cd->type) || !vp)
5380 vp->data_device = device_path(cd->device);
5381 vp->hash_device = mdata_device_path(cd);
5382 vp->fec_device = device_path(cd->u.verity.fec_device);
5383 vp->fec_area_offset = cd->u.verity.hdr.fec_area_offset;
5384 vp->fec_roots = cd->u.verity.hdr.fec_roots;
5385 vp->hash_name = cd->u.verity.hdr.hash_name;
5386 vp->salt = cd->u.verity.hdr.salt;
5387 vp->salt_size = cd->u.verity.hdr.salt_size;
5388 vp->data_block_size = cd->u.verity.hdr.data_block_size;
5389 vp->hash_block_size = cd->u.verity.hdr.hash_block_size;
5390 vp->data_size = cd->u.verity.hdr.data_size;
5391 vp->hash_area_offset = cd->u.verity.hdr.hash_area_offset;
5392 vp->hash_type = cd->u.verity.hdr.hash_type;
5393 vp->flags = cd->u.verity.hdr.flags & (CRYPT_VERITY_NO_HEADER | CRYPT_VERITY_ROOT_HASH_SIGNATURE);
5397 int crypt_get_integrity_info(struct crypt_device *cd,
5398 struct crypt_params_integrity *ip)
5403 if (isINTEGRITY(cd->type)) {
5404 ip->journal_size = cd->u.integrity.params.journal_size;
5405 ip->journal_watermark = cd->u.integrity.params.journal_watermark;
5406 ip->journal_commit_time = cd->u.integrity.params.journal_commit_time;
5407 ip->interleave_sectors = cd->u.integrity.params.interleave_sectors;
5408 ip->tag_size = cd->u.integrity.params.tag_size;
5409 ip->sector_size = cd->u.integrity.params.sector_size;
5410 ip->buffer_sectors = cd->u.integrity.params.buffer_sectors;
5412 ip->integrity = cd->u.integrity.params.integrity;
5413 ip->integrity_key_size = crypt_get_integrity_key_size(cd);
5415 ip->journal_integrity = cd->u.integrity.params.journal_integrity;
5416 ip->journal_integrity_key_size = cd->u.integrity.params.journal_integrity_key_size;
5417 ip->journal_integrity_key = NULL;
5419 ip->journal_crypt = cd->u.integrity.params.journal_crypt;
5420 ip->journal_crypt_key_size = cd->u.integrity.params.journal_crypt_key_size;
5421 ip->journal_crypt_key = NULL;
5423 } else if (isLUKS2(cd->type)) {
5424 ip->journal_size = 0; // FIXME
5425 ip->journal_watermark = 0; // FIXME
5426 ip->journal_commit_time = 0; // FIXME
5427 ip->interleave_sectors = 0; // FIXME
5428 ip->sector_size = crypt_get_sector_size(cd);
5429 ip->buffer_sectors = 0; // FIXME
5431 ip->integrity = LUKS2_get_integrity(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT);
5432 ip->integrity_key_size = crypt_get_integrity_key_size(cd);
5433 ip->tag_size = INTEGRITY_tag_size(cd, ip->integrity, crypt_get_cipher(cd), crypt_get_cipher_mode(cd));
5435 ip->journal_integrity = NULL;
5436 ip->journal_integrity_key_size = 0;
5437 ip->journal_integrity_key = NULL;
5439 ip->journal_crypt = NULL;
5440 ip->journal_crypt_key_size = 0;
5441 ip->journal_crypt_key = NULL;
5448 int crypt_convert(struct crypt_device *cd,
5452 struct luks_phdr hdr1;
5453 struct luks2_hdr hdr2;
5459 log_dbg(cd, "Converting LUKS device to type %s", type);
5461 if ((r = onlyLUKS(cd)))
5464 if (isLUKS1(cd->type) && isLUKS2(type))
5465 r = LUKS2_luks1_to_luks2(cd, &cd->u.luks1.hdr, &hdr2);
5466 else if (isLUKS2(cd->type) && isLUKS1(type))
5467 r = LUKS2_luks2_to_luks1(cd, &cd->u.luks2.hdr, &hdr1);
5472 /* in-memory header may be invalid after failed conversion */
5475 log_err(cd, _("Cannot convert device %s which is still in use."), mdata_device_path(cd));
5479 crypt_free_type(cd);
5481 return crypt_load(cd, type, params);
5484 /* Internal access function to header pointer */
5485 void *crypt_get_hdr(struct crypt_device *cd, const char *type)
5487 /* If requested type differs, ignore it */
5488 if (strcmp(cd->type, type))
5491 if (isPLAIN(cd->type))
5492 return &cd->u.plain;
5494 if (isLUKS1(cd->type))
5495 return &cd->u.luks1.hdr;
5497 if (isLUKS2(cd->type))
5498 return &cd->u.luks2.hdr;
5500 if (isLOOPAES(cd->type))
5501 return &cd->u.loopaes;
5503 if (isVERITY(cd->type))
5504 return &cd->u.verity;
5506 if (isTCRYPT(cd->type))
5507 return &cd->u.tcrypt;
5513 struct luks2_reenc_context *crypt_get_reenc_context(struct crypt_device *cd)
5515 return cd->u.luks2.rh;
5519 void crypt_set_reenc_context(struct crypt_device *cd, struct luks2_reenc_context *rh)
5521 cd->u.luks2.rh = rh;
5527 int crypt_activate_by_token(struct crypt_device *cd,
5528 const char *name, int token, void *usrptr, uint32_t flags)
5532 log_dbg(cd, "%s volume %s using token %d.",
5533 name ? "Activating" : "Checking", name ?: "passphrase", token);
5535 if ((r = _onlyLUKS2(cd, CRYPT_CD_QUIET | CRYPT_CD_UNRESTRICTED, 0)))
5538 if ((flags & CRYPT_ACTIVATE_KEYRING_KEY) && !crypt_use_keyring_for_vk(cd))
5541 if ((flags & CRYPT_ACTIVATE_ALLOW_UNBOUND_KEY) && name)
5544 if (token == CRYPT_ANY_TOKEN)
5545 return LUKS2_token_open_and_activate_any(cd, &cd->u.luks2.hdr, name, flags);
5547 return LUKS2_token_open_and_activate(cd, &cd->u.luks2.hdr, token, name, flags, usrptr);
5550 int crypt_token_json_get(struct crypt_device *cd, int token, const char **json)
5557 log_dbg(cd, "Requesting JSON for token %d.", token);
5559 if ((r = _onlyLUKS2(cd, CRYPT_CD_UNRESTRICTED, 0)))
5562 return LUKS2_token_json_get(cd, &cd->u.luks2.hdr, token, json) ?: token;
5565 int crypt_token_json_set(struct crypt_device *cd, int token, const char *json)
5569 log_dbg(cd, "Updating JSON for token %d.", token);
5571 if ((r = onlyLUKS2(cd)))
5574 return LUKS2_token_create(cd, &cd->u.luks2.hdr, token, json, 1);
5577 crypt_token_info crypt_token_status(struct crypt_device *cd, int token, const char **type)
5579 if (_onlyLUKS2(cd, CRYPT_CD_QUIET | CRYPT_CD_UNRESTRICTED, 0))
5580 return CRYPT_TOKEN_INVALID;
5582 return LUKS2_token_status(cd, &cd->u.luks2.hdr, token, type);
5585 int crypt_token_luks2_keyring_get(struct crypt_device *cd,
5587 struct crypt_token_params_luks2_keyring *params)
5589 crypt_token_info token_info;
5596 log_dbg(cd, "Requesting LUKS2 keyring token %d.", token);
5598 if ((r = _onlyLUKS2(cd, CRYPT_CD_UNRESTRICTED, 0)))
5601 token_info = LUKS2_token_status(cd, &cd->u.luks2.hdr, token, &type);
5602 switch (token_info) {
5603 case CRYPT_TOKEN_INVALID:
5604 log_dbg(cd, "Token %d is invalid.", token);
5606 case CRYPT_TOKEN_INACTIVE:
5607 log_dbg(cd, "Token %d is inactive.", token);
5609 case CRYPT_TOKEN_INTERNAL:
5610 if (!strcmp(type, LUKS2_TOKEN_KEYRING))
5613 case CRYPT_TOKEN_INTERNAL_UNKNOWN:
5614 case CRYPT_TOKEN_EXTERNAL:
5615 case CRYPT_TOKEN_EXTERNAL_UNKNOWN:
5616 log_dbg(cd, "Token %d has unexpected type %s.", token, type);
5620 return LUKS2_builtin_token_get(cd, &cd->u.luks2.hdr, token, LUKS2_TOKEN_KEYRING, params);
5623 int crypt_token_luks2_keyring_set(struct crypt_device *cd,
5625 const struct crypt_token_params_luks2_keyring *params)
5632 log_dbg(cd, "Creating new LUKS2 keyring token (%d).", token);
5634 if ((r = onlyLUKS2(cd)))
5637 return LUKS2_builtin_token_create(cd, &cd->u.luks2.hdr, token, LUKS2_TOKEN_KEYRING, params, 1);
5640 int crypt_token_assign_keyslot(struct crypt_device *cd, int token, int keyslot)
5644 if ((r = onlyLUKS2(cd)))
5647 return LUKS2_token_assign(cd, &cd->u.luks2.hdr, keyslot, token, 1, 1);
5650 int crypt_token_unassign_keyslot(struct crypt_device *cd, int token, int keyslot)
5654 if ((r = onlyLUKS2(cd)))
5657 return LUKS2_token_assign(cd, &cd->u.luks2.hdr, keyslot, token, 0, 1);
5660 int crypt_token_is_assigned(struct crypt_device *cd, int token, int keyslot)
5664 if ((r = _onlyLUKS2(cd, CRYPT_CD_QUIET | CRYPT_CD_UNRESTRICTED, 0)))
5667 return LUKS2_token_is_assigned(cd, &cd->u.luks2.hdr, keyslot, token);
5671 int crypt_metadata_locking_enabled(void)
5673 return _metadata_locking;
5676 int crypt_metadata_locking(struct crypt_device *cd, int enable)
5678 if (enable && !_metadata_locking)
5681 _metadata_locking = enable ? 1 : 0;
5685 int crypt_persistent_flags_set(struct crypt_device *cd, crypt_flags_type type, uint32_t flags)
5689 if ((r = onlyLUKS2(cd)))
5692 if (type == CRYPT_FLAGS_ACTIVATION)
5693 return LUKS2_config_set_flags(cd, &cd->u.luks2.hdr, flags);
5695 if (type == CRYPT_FLAGS_REQUIREMENTS)
5696 return LUKS2_config_set_requirements(cd, &cd->u.luks2.hdr, flags, true);
5701 int crypt_persistent_flags_get(struct crypt_device *cd, crypt_flags_type type, uint32_t *flags)
5708 if ((r = _onlyLUKS2(cd, CRYPT_CD_UNRESTRICTED, 0)))
5711 if (type == CRYPT_FLAGS_ACTIVATION)
5712 return LUKS2_config_get_flags(cd, &cd->u.luks2.hdr, flags);
5714 if (type == CRYPT_FLAGS_REQUIREMENTS)
5715 return LUKS2_config_get_requirements(cd, &cd->u.luks2.hdr, flags);
5720 static int update_volume_key_segment_digest(struct crypt_device *cd, struct luks2_hdr *hdr, int digest, int commit)
5724 /* Remove any assignments in memory */
5725 r = LUKS2_digest_segment_assign(cd, hdr, CRYPT_DEFAULT_SEGMENT, CRYPT_ANY_DIGEST, 0, 0);
5729 /* Assign it to the specific digest */
5730 return LUKS2_digest_segment_assign(cd, hdr, CRYPT_DEFAULT_SEGMENT, digest, 1, commit);
5733 static int verify_and_update_segment_digest(struct crypt_device *cd,
5734 struct luks2_hdr *hdr, int keyslot,
5735 const char *volume_key, size_t volume_key_size,
5736 const char *password, size_t password_size)
5739 struct volume_key *vk = NULL;
5741 if (keyslot < 0 || (volume_key && !volume_key_size))
5745 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
5747 r = LUKS2_keyslot_open(cd, keyslot, CRYPT_ANY_SEGMENT, password, password_size, &vk);
5757 /* check volume_key (param) digest matches keyslot digest */
5758 r = LUKS2_digest_verify(cd, hdr, vk, keyslot);
5763 /* nothing to do, volume key in keyslot is already assigned to default segment */
5764 r = LUKS2_digest_verify_by_segment(cd, hdr, CRYPT_DEFAULT_SEGMENT, vk);
5768 /* FIXME: check new volume key is usable with current default segment */
5770 r = update_volume_key_segment_digest(cd, &cd->u.luks2.hdr, digest, 1);
5772 log_err(cd, _("Failed to assign keyslot %u as the new volume key."), keyslot);
5774 crypt_free_volume_key(vk);
5775 return r < 0 ? r : keyslot;
5779 int crypt_keyslot_add_by_key(struct crypt_device *cd,
5781 const char *volume_key,
5782 size_t volume_key_size,
5783 const char *passphrase,
5784 size_t passphrase_size,
5788 struct luks2_keyslot_params params;
5789 struct volume_key *vk = NULL;
5791 if (!passphrase || ((flags & CRYPT_VOLUME_KEY_NO_SEGMENT) &&
5792 (flags & CRYPT_VOLUME_KEY_SET)))
5795 log_dbg(cd, "Adding new keyslot %d with volume key %sassigned to a crypt segment.",
5796 keyslot, flags & CRYPT_VOLUME_KEY_NO_SEGMENT ? "un" : "");
5798 if ((r = onlyLUKS2(cd)))
5801 /* new volume key assignment */
5802 if ((flags & CRYPT_VOLUME_KEY_SET) && crypt_keyslot_status(cd, keyslot) > CRYPT_SLOT_INACTIVE)
5803 return verify_and_update_segment_digest(cd, &cd->u.luks2.hdr,
5804 keyslot, volume_key, volume_key_size, passphrase, passphrase_size);
5806 r = keyslot_verify_or_find_empty(cd, &keyslot);
5811 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
5812 else if (flags & CRYPT_VOLUME_KEY_NO_SEGMENT)
5813 vk = crypt_generate_volume_key(cd, volume_key_size);
5814 else if (cd->volume_key)
5815 vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
5822 /* if key matches volume key digest tear down new vk flag */
5823 digest = LUKS2_digest_verify_by_segment(cd, &cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT, vk);
5825 flags &= ~CRYPT_VOLUME_KEY_SET;
5827 /* if key matches any existing digest, do not create new digest */
5828 if (digest < 0 && (flags & CRYPT_VOLUME_KEY_DIGEST_REUSE))
5829 digest = LUKS2_digest_any_matching(cd, &cd->u.luks2.hdr, vk);
5831 /* no segment flag or new vk flag requires new key digest */
5832 if (flags & (CRYPT_VOLUME_KEY_NO_SEGMENT | CRYPT_VOLUME_KEY_SET)) {
5833 if (digest < 0 || !(flags & CRYPT_VOLUME_KEY_DIGEST_REUSE))
5834 digest = LUKS2_digest_create(cd, "pbkdf2", &cd->u.luks2.hdr, vk);
5839 log_err(cd, _("Volume key does not match the volume."));
5843 r = LUKS2_keyslot_params_default(cd, &cd->u.luks2.hdr, ¶ms);
5845 log_err(cd, _("Failed to initialize default LUKS2 keyslot parameters."));
5849 r = LUKS2_digest_assign(cd, &cd->u.luks2.hdr, keyslot, digest, 1, 0);
5851 log_err(cd, _("Failed to assign keyslot %d to digest."), keyslot);
5855 r = LUKS2_keyslot_store(cd, &cd->u.luks2.hdr, keyslot,
5856 passphrase, passphrase_size, vk, ¶ms);
5858 if (r >= 0 && (flags & CRYPT_VOLUME_KEY_SET))
5859 r = update_volume_key_segment_digest(cd, &cd->u.luks2.hdr, digest, 1);
5861 crypt_free_volume_key(vk);
5873 int crypt_use_keyring_for_vk(struct crypt_device *cd)
5877 /* dm backend must be initialized */
5878 if (!cd || !isLUKS2(cd->type))
5881 if (!_vk_via_keyring || !kernel_keyring_support())
5884 if (dm_flags(cd, DM_CRYPT, &dmc_flags))
5885 return dmcrypt_keyring_bug() ? 0 : 1;
5887 return (dmc_flags & DM_KERNEL_KEYRING_SUPPORTED);
5890 int crypt_volume_key_keyring(struct crypt_device *cd, int enable)
5892 _vk_via_keyring = enable ? 1 : 0;
5897 int crypt_volume_key_load_in_keyring(struct crypt_device *cd, struct volume_key *vk)
5900 const char *type_name = key_type_name(LOGON_KEY);
5902 if (!vk || !cd || !type_name)
5905 if (!vk->key_description) {
5906 log_dbg(cd, "Invalid key description");
5910 log_dbg(cd, "Loading key (%zu bytes, type %s) in thread keyring.", vk->keylength, type_name);
5912 r = keyring_add_key_in_thread_keyring(LOGON_KEY, vk->key_description, vk->key, vk->keylength);
5914 log_dbg(cd, "keyring_add_key_in_thread_keyring failed (error %d)", r);
5915 log_err(cd, _("Failed to load key in kernel keyring."));
5917 crypt_set_key_in_keyring(cd, 1);
5923 int crypt_key_in_keyring(struct crypt_device *cd)
5925 return cd ? cd->key_in_keyring : 0;
5929 void crypt_set_key_in_keyring(struct crypt_device *cd, unsigned key_in_keyring)
5934 cd->key_in_keyring = key_in_keyring;
5938 void crypt_drop_keyring_key_by_description(struct crypt_device *cd, const char *key_description, key_type_t ktype)
5941 const char *type_name = key_type_name(ktype);
5943 if (!key_description || !type_name)
5946 log_dbg(cd, "Requesting keyring %s key for revoke and unlink.", type_name);
5948 r = keyring_revoke_and_unlink_key(ktype, key_description);
5950 log_dbg(cd, "keyring_revoke_and_unlink_key failed (error %d)", r);
5951 crypt_set_key_in_keyring(cd, 0);
5955 void crypt_drop_keyring_key(struct crypt_device *cd, struct volume_key *vks)
5957 struct volume_key *vk = vks;
5960 crypt_drop_keyring_key_by_description(cd, vk->key_description, LOGON_KEY);
5961 vk = crypt_volume_key_next(vk);
5965 int crypt_activate_by_keyring(struct crypt_device *cd,
5967 const char *key_description,
5972 size_t passphrase_size;
5975 if (!cd || !key_description)
5978 log_dbg(cd, "%s volume %s [keyslot %d] using passphrase in keyring.",
5979 name ? "Activating" : "Checking", name ?: "passphrase", keyslot);
5981 if (!kernel_keyring_support()) {
5982 log_err(cd, _("Kernel keyring is not supported by the kernel."));
5986 r = _activate_check_status(cd, name, flags & CRYPT_ACTIVATE_REFRESH);
5990 r = keyring_get_passphrase(key_description, &passphrase, &passphrase_size);
5992 log_err(cd, _("Failed to read passphrase from keyring (error %d)."), r);
5996 r = _activate_by_passphrase(cd, name, keyslot, passphrase, passphrase_size, flags);
5998 crypt_safe_memzero(passphrase, passphrase_size);
6005 * Workaround for serialization of parallel activation and memory-hard PBKDF
6006 * In specific situation (systemd activation) this causes OOM killer activation.
6007 * For now, let's provide this ugly way to serialize unlocking of devices.
6009 int crypt_serialize_lock(struct crypt_device *cd)
6011 if (!cd->memory_hard_pbkdf_lock_enabled)
6014 log_dbg(cd, "Taking global memory-hard access serialization lock.");
6015 if (crypt_write_lock(cd, "memory-hard-access", true, &cd->pbkdf_memory_hard_lock)) {
6016 log_err(cd, _("Failed to acquire global memory-hard access serialization lock."));
6017 cd->pbkdf_memory_hard_lock = NULL;
6024 void crypt_serialize_unlock(struct crypt_device *cd)
6026 if (!cd->memory_hard_pbkdf_lock_enabled)
6029 crypt_unlock_internal(cd, cd->pbkdf_memory_hard_lock);
6030 cd->pbkdf_memory_hard_lock = NULL;
6033 crypt_reencrypt_info crypt_reencrypt_status(struct crypt_device *cd,
6034 struct crypt_params_reencrypt *params)
6036 if (!cd || !isLUKS2(cd->type))
6037 return CRYPT_REENCRYPT_NONE;
6039 if (_onlyLUKS2(cd, CRYPT_CD_QUIET, CRYPT_REQUIREMENT_ONLINE_REENCRYPT))
6040 return CRYPT_REENCRYPT_INVALID;
6042 return LUKS2_reencrypt_status(cd, params);
6045 static void __attribute__((destructor)) libcryptsetup_exit(void)
6047 crypt_backend_destroy();
6048 crypt_random_exit();