2 * libcryptsetup - cryptsetup library
4 * Copyright (C) 2004, Christophe Saout <christophe@saout.de>
5 * Copyright (C) 2004-2007, Clemens Fruhwirth <clemens@endorphin.org>
6 * Copyright (C) 2009-2011, Red Hat, Inc. All rights reserved.
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 #include "libcryptsetup.h"
33 #include "crypto_backend.h"
39 char *metadata_device;
43 struct volume_key *volume_key;
45 uint64_t iteration_time;
50 /* used in CRYPT_LUKS1 */
52 uint64_t PBKDF2_per_sec;
54 /* used in CRYPT_PLAIN */
55 struct crypt_params_plain plain_hdr;
57 char *plain_cipher_mode;
59 unsigned int plain_key_size;
61 /* used in CRYPT_LOOPAES */
62 struct crypt_params_loopaes loopaes_hdr;
64 char *loopaes_cipher_mode;
66 unsigned int loopaes_key_size;
68 /* callbacks definitions */
69 void (*log)(int level, const char *msg, void *usrptr);
71 int (*confirm)(const char *msg, void *usrptr);
73 int (*password)(const char *msg, char *buf, size_t length, void *usrptr);
74 void *password_usrptr;
76 /* last error message */
77 char error[MAX_ERROR_LENGTH];
81 /* FIXME: not thread safe, remove this later */
82 static char global_error[MAX_ERROR_LENGTH] = {0};
85 static void (*_default_log)(int level, const char *msg, void *usrptr) = NULL;
86 static int _debug_level = 0;
88 void crypt_set_debug_level(int level)
93 int crypt_get_debug_level(void)
98 static void crypt_set_error(struct crypt_device *cd, const char *error)
100 size_t size = strlen(error);
102 /* Set global error, ugly hack... */
103 strncpy(global_error, error, MAX_ERROR_LENGTH - 2);
104 if (size < MAX_ERROR_LENGTH && global_error[size - 1] == '\n')
105 global_error[size - 1] = '\0';
107 /* Set error string per context */
109 strncpy(cd->error, error, MAX_ERROR_LENGTH - 2);
110 if (size < MAX_ERROR_LENGTH && cd->error[size - 1] == '\n')
111 cd->error[size - 1] = '\0';
115 void crypt_log(struct crypt_device *cd, int level, const char *msg)
118 cd->log(level, msg, cd->log_usrptr);
119 else if (_default_log)
120 _default_log(level, msg, NULL);
122 if (level == CRYPT_LOG_ERROR)
123 crypt_set_error(cd, msg);
126 __attribute__((format(printf, 5, 6)))
127 void logger(struct crypt_device *cd, int level, const char *file,
128 int line, const char *format, ...)
133 va_start(argp, format);
135 if (vasprintf(&target, format, argp) > 0 ) {
137 crypt_log(cd, level, target);
139 } else if (_debug_level)
140 printf("# %s:%d %s\n", file ?: "?", line, target);
142 } else if (_debug_level)
143 printf("# %s\n", target);
151 static const char *mdata_device(struct crypt_device *cd)
153 return cd->metadata_device ?: cd->device;
156 static int init_crypto(struct crypt_device *ctx)
160 r = crypt_random_init(ctx);
162 log_err(ctx, _("Cannot initialize crypto RNG backend.\n"));
166 r = crypt_backend_init(ctx);
168 log_err(ctx, _("Cannot initialize crypto backend.\n"));
173 static int process_key(struct crypt_device *cd, const char *hash_name,
174 size_t key_size, const char *pass, size_t passLen,
175 struct volume_key **vk)
182 *vk = crypt_alloc_volume_key(key_size, NULL);
187 r = crypt_plain_hash(cd, hash_name, (*vk)->key, key_size, pass, passLen);
190 log_err(cd, _("Hash algorithm %s not supported.\n"),
193 log_err(cd, _("Key processing error (using hash %s).\n"),
195 crypt_free_volume_key(*vk);
199 } else if (passLen > key_size) {
200 memcpy((*vk)->key, pass, key_size);
202 memcpy((*vk)->key, pass, passLen);
208 static int isPLAIN(const char *type)
210 return (type && !strcmp(CRYPT_PLAIN, type));
213 static int isLUKS(const char *type)
215 return (type && !strcmp(CRYPT_LUKS1, type));
218 static int isLOOPAES(const char *type)
220 return (type && !strcmp(CRYPT_LOOPAES, type));
223 /* keyslot helpers */
224 static int keyslot_verify_or_find_empty(struct crypt_device *cd, int *keyslot)
226 if (*keyslot == CRYPT_ANY_SLOT) {
227 *keyslot = LUKS_keyslot_find_empty(&cd->hdr);
229 log_err(cd, _("All key slots full.\n"));
234 switch (LUKS_keyslot_info(&cd->hdr, *keyslot)) {
235 case CRYPT_SLOT_INVALID:
236 log_err(cd, _("Key slot %d is invalid, please select between 0 and %d.\n"),
237 *keyslot, LUKS_NUMKEYS - 1);
239 case CRYPT_SLOT_INACTIVE:
242 log_err(cd, _("Key slot %d is full, please select another one.\n"),
251 * compares UUIDs returned by device-mapper (striped by cryptsetup) and uuid in header
253 static int crypt_uuid_cmp(const char *dm_uuid, const char *hdr_uuid)
258 if (!dm_uuid || !hdr_uuid)
261 str = strchr(dm_uuid, '-');
265 for (i = 0, j = 1; hdr_uuid[i]; i++) {
266 if (hdr_uuid[i] == '-')
269 if (!str[j] || str[j] == '-')
272 if (str[j] != hdr_uuid[i])
280 int PLAIN_activate(struct crypt_device *cd,
282 struct volume_key *vk,
287 char *dm_cipher = NULL;
288 struct crypt_dm_active_device dmd = {
289 .device = crypt_get_device_name(cd),
291 .uuid = crypt_get_uuid(cd),
293 .offset = crypt_get_data_offset(cd),
294 .iv_offset = crypt_get_iv_offset(cd),
299 r = device_check_and_adjust(cd, dmd.device,
300 (dmd.flags & CRYPT_ACTIVATE_SHARED) ? DEV_SHARED : DEV_EXCL,
301 &dmd.size, &dmd.offset, &flags);
305 if (crypt_get_cipher_mode(cd))
306 r = asprintf(&dm_cipher, "%s-%s", crypt_get_cipher(cd), crypt_get_cipher_mode(cd));
308 r = asprintf(&dm_cipher, "%s", crypt_get_cipher(cd));
312 dmd.cipher = dm_cipher;
313 log_dbg("Trying to activate PLAIN device %s using cipher %s.", name, dmd.cipher);
315 r = dm_create_device(name, CRYPT_PLAIN, &dmd, 0);
318 if (!cd->plain_uuid && dm_query_device(name, DM_ACTIVE_UUID, &dmd) >= 0)
319 cd->plain_uuid = CONST_CAST(char*)dmd.uuid;
325 int crypt_confirm(struct crypt_device *cd, const char *msg)
327 if (!cd || !cd->confirm)
330 return cd->confirm(msg, cd->confirm_usrptr);
333 static int key_from_terminal(struct crypt_device *cd, char *msg, char **key,
334 size_t *key_len, int force_verify)
340 if(!msg && asprintf(&prompt, _("Enter passphrase for %s: "),
341 cd->backing_file ?: crypt_get_device_name(cd)) < 0)
348 *key = crypt_safe_alloc(DEFAULT_PASSPHRASE_SIZE_MAX);
353 r = cd->password(msg, *key, DEFAULT_PASSPHRASE_SIZE_MAX,
354 cd->password_usrptr);
356 crypt_safe_free(*key);
361 r = crypt_get_key(msg, key, key_len, 0, NULL, cd->timeout,
362 (force_verify || cd->password_verify), cd);
365 return (r < 0) ? r: 0;
368 static int volume_key_by_terminal_passphrase(struct crypt_device *cd, int keyslot,
369 struct volume_key **vk)
371 char *passphrase_read = NULL;
372 size_t passphrase_size_read;
373 int r = -EINVAL, eperm = 0, tries = cd->tries;
377 crypt_free_volume_key(*vk);
380 r = key_from_terminal(cd, NULL, &passphrase_read,
381 &passphrase_size_read, 0);
382 /* Continue if it is just passphrase verify mismatch */
388 r = LUKS_open_key_with_hdr(mdata_device(cd), keyslot, passphrase_read,
389 passphrase_size_read, &cd->hdr, vk, cd);
392 crypt_safe_free(passphrase_read);
393 passphrase_read = NULL;
394 } while (r == -EPERM && (--tries > 0));
397 crypt_free_volume_key(*vk);
400 /* Report wrong passphrase if at least one try failed */
401 if (eperm && r == -EPIPE)
405 crypt_safe_free(passphrase_read);
409 static int key_from_file(struct crypt_device *cd, char *msg,
410 char **key, size_t *key_len,
411 const char *key_file, size_t key_size)
413 return crypt_get_key(msg, key, key_len, key_size, key_file,
417 void crypt_set_log_callback(struct crypt_device *cd,
418 void (*log)(int level, const char *msg, void *usrptr),
425 cd->log_usrptr = usrptr;
429 void crypt_set_confirm_callback(struct crypt_device *cd,
430 int (*confirm)(const char *msg, void *usrptr),
433 cd->confirm = confirm;
434 cd->confirm_usrptr = usrptr;
437 void crypt_set_password_callback(struct crypt_device *cd,
438 int (*password)(const char *msg, char *buf, size_t length, void *usrptr),
441 cd->password = password;
442 cd->password_usrptr = usrptr;
445 static void _get_error(char *error, char *buf, size_t size)
447 if (!buf || size < 1)
450 strncpy(buf, error, size - 1);
451 buf[size - 1] = '\0';
457 void crypt_last_error(struct crypt_device *cd, char *buf, size_t size)
460 return _get_error(cd->error, buf, size);
463 /* Deprecated global error interface */
464 void crypt_get_error(char *buf, size_t size)
466 return _get_error(global_error, buf, size);
469 const char *crypt_get_dir(void)
474 int crypt_init(struct crypt_device **cd, const char *device)
476 struct crypt_device *h = NULL;
482 log_dbg("Allocating crypt device %s context.", device);
484 if (!(h = malloc(sizeof(struct crypt_device))))
487 memset(h, 0, sizeof(*h));
491 r = device_ready(NULL, device, O_RDONLY);
493 h->device = crypt_loop_get_device();
494 log_dbg("Not a block device, %s%s.",
495 h->device ? "using free loop device " :
496 "no free loop device found",
499 log_err(NULL, _("Cannot find a free loopback device.\n"));
504 /* Keep the loop open, dettached on last close. */
505 h->loop_fd = crypt_loop_attach(h->device, device, 0, 1, &readonly);
506 if (h->loop_fd == -1) {
507 log_err(NULL, _("Attaching loopback device failed "
508 "(loop device with autoclear flag is required).\n"));
513 h->backing_file = crypt_loop_backing_file(h->device);
514 r = device_ready(NULL, h->device, O_RDONLY);
522 if (!h->device && device && !(h->device = strdup(device))) {
527 if (dm_init(h, 1) < 0) {
532 h->iteration_time = 1000;
533 h->password_verify = 0;
535 h->rng_type = crypt_random_default_key_rng();
541 if (h->loop_fd != -1)
544 free(h->backing_file);
550 static int crypt_check_data_device_size(struct crypt_device *cd)
553 uint64_t size, size_min;
555 /* Check data device size, require at least one sector */
556 size_min = crypt_get_data_offset(cd) << SECTOR_SHIFT ?: SECTOR_SIZE;
558 r = device_size(crypt_get_device_name(cd), &size);
562 if (size < size_min) {
563 log_err(cd, _("LUKS header detected but device %s is too small.\n"),
564 crypt_get_device_name(cd));
571 int crypt_set_data_device(struct crypt_device *cd, const char *device)
576 log_dbg("Setting ciphertext data device to %s.", device ?: "(none)");
578 if (!isLUKS(cd->type)) {
579 log_err(cd, _("This operation is not supported for this device type.\n"));
583 /* metadata device must be set */
587 r = device_ready(NULL, device, O_RDONLY);
591 if (!(data_device = strdup(device)))
594 if (!cd->metadata_device)
595 cd->metadata_device = cd->device;
599 cd->device = data_device;
601 return crypt_check_data_device_size(cd);
604 static int _crypt_load_luks1(struct crypt_device *cd, int require_header)
606 struct luks_phdr hdr;
613 r = LUKS_read_phdr(mdata_device(cd), &hdr, require_header, cd);
617 if (!cd->type && !(cd->type = strdup(CRYPT_LUKS1)))
620 memcpy(&cd->hdr, &hdr, sizeof(hdr));
625 int crypt_init_by_name_and_header(struct crypt_device **cd,
627 const char *header_device)
629 crypt_status_info ci;
630 struct crypt_dm_active_device dmd;
631 char cipher[MAX_CIPHER_LEN], cipher_mode[MAX_CIPHER_LEN];
635 log_dbg("Allocating crypt device context by device %s.", name);
637 ci = crypt_status(NULL, name);
638 if (ci == CRYPT_INVALID)
641 if (ci < CRYPT_ACTIVE) {
642 log_err(NULL, _("Device %s is not active.\n"), name);
646 r = dm_query_device(name, DM_ACTIVE_DEVICE | DM_ACTIVE_CIPHER |
647 DM_ACTIVE_UUID | DM_ACTIVE_KEYSIZE, &dmd);
654 r = crypt_init(cd, header_device);
656 r = crypt_init(cd, dmd.device);
658 /* Underlying device disappeared but mapping still active */
659 if (!dmd.device || r == -ENOTBLK)
660 log_verbose(NULL, _("Underlying device for crypt device %s disappeared.\n"),
663 /* Underlying device is not readable but crypt mapping exists */
665 free(CONST_CAST(void*)dmd.device);
667 r = crypt_init(cd, NULL);
675 if (!strncmp(CRYPT_PLAIN, dmd.uuid, sizeof(CRYPT_PLAIN)-1))
676 (*cd)->type = strdup(CRYPT_PLAIN);
677 else if (!strncmp(CRYPT_LOOPAES, dmd.uuid, sizeof(CRYPT_LOOPAES)-1))
678 (*cd)->type = strdup(CRYPT_LOOPAES);
679 else if (!strncmp(CRYPT_LUKS1, dmd.uuid, sizeof(CRYPT_LUKS1)-1))
680 (*cd)->type = strdup(CRYPT_LUKS1);
682 log_dbg("Unknown UUID set, some parameters are not set.");
684 log_dbg("Active device has no UUID set, some parameters are not set.");
687 r = crypt_set_data_device(*cd, dmd.device);
692 /* Try to initialise basic parameters from active device */
694 if (!(*cd)->backing_file && dmd.device && crypt_loop_device(dmd.device) &&
695 !((*cd)->backing_file = crypt_loop_backing_file(dmd.device))) {
700 if (isPLAIN((*cd)->type)) {
701 (*cd)->plain_uuid = strdup(dmd.uuid);
702 (*cd)->plain_hdr.hash = NULL; /* no way to get this */
703 (*cd)->plain_hdr.offset = dmd.offset;
704 (*cd)->plain_hdr.skip = dmd.iv_offset;
705 (*cd)->plain_key_size = dmd.vk->keylength;
707 r = crypt_parse_name_and_mode(dmd.cipher, cipher, NULL, cipher_mode);
709 (*cd)->plain_cipher = strdup(cipher);
710 (*cd)->plain_cipher_mode = strdup(cipher_mode);
712 } else if (isLOOPAES((*cd)->type)) {
713 (*cd)->loopaes_uuid = strdup(dmd.uuid);
714 (*cd)->loopaes_hdr.offset = dmd.offset;
716 r = crypt_parse_name_and_mode(dmd.cipher, cipher,
717 &key_nums, cipher_mode);
719 (*cd)->loopaes_cipher = strdup(cipher);
720 (*cd)->loopaes_cipher_mode = strdup(cipher_mode);
721 /* version 3 uses last key for IV */
722 if (dmd.vk->keylength % key_nums)
724 (*cd)->loopaes_key_size = dmd.vk->keylength / key_nums;
726 } else if (isLUKS((*cd)->type)) {
727 if (mdata_device(*cd)) {
728 r = _crypt_load_luks1(*cd, 0);
730 log_dbg("LUKS device header does not match active device.");
736 /* checks whether UUIDs match each other */
737 r = crypt_uuid_cmp(dmd.uuid, (*cd)->hdr.uuid);
739 log_dbg("LUKS device header uuid: %s mismatches DM returned uuid %s",
740 (*cd)->hdr.uuid, dmd.uuid);
754 crypt_free_volume_key(dmd.vk);
755 free(CONST_CAST(void*)dmd.device);
756 free(CONST_CAST(void*)dmd.cipher);
757 free(CONST_CAST(void*)dmd.uuid);
761 int crypt_init_by_name(struct crypt_device **cd, const char *name)
763 return crypt_init_by_name_and_header(cd, name, NULL);
766 static int _crypt_format_plain(struct crypt_device *cd,
768 const char *cipher_mode,
770 size_t volume_key_size,
771 struct crypt_params_plain *params)
773 if (!cipher || !cipher_mode) {
774 log_err(cd, _("Invalid plain crypt parameters.\n"));
778 if (volume_key_size > 1024) {
779 log_err(cd, _("Invalid key size.\n"));
783 cd->plain_key_size = volume_key_size;
784 cd->volume_key = crypt_alloc_volume_key(volume_key_size, NULL);
788 cd->plain_cipher = strdup(cipher);
789 cd->plain_cipher_mode = strdup(cipher_mode);
792 cd->plain_uuid = strdup(uuid);
794 if (params && params->hash)
795 cd->plain_hdr.hash = strdup(params->hash);
797 cd->plain_hdr.offset = params ? params->offset : 0;
798 cd->plain_hdr.skip = params ? params->skip : 0;
799 cd->plain_hdr.size = params ? params->size : 0;
801 if (!cd->plain_cipher || !cd->plain_cipher_mode)
807 static int _crypt_format_luks1(struct crypt_device *cd,
809 const char *cipher_mode,
811 const char *volume_key,
812 size_t volume_key_size,
813 struct crypt_params_luks1 *params)
816 unsigned long required_alignment = DEFAULT_DISK_ALIGNMENT;
817 unsigned long alignment_offset = 0;
819 if (!mdata_device(cd)) {
820 log_err(cd, _("Can't format LUKS without device.\n"));
825 cd->volume_key = crypt_alloc_volume_key(volume_key_size,
828 cd->volume_key = crypt_generate_volume_key(cd, volume_key_size);
833 if (params && params->data_device) {
834 cd->metadata_device = cd->device;
835 if (!(cd->device = strdup(params->data_device)))
837 required_alignment = params->data_alignment * SECTOR_SIZE;
838 } else if (params && params->data_alignment) {
839 required_alignment = params->data_alignment * SECTOR_SIZE;
841 get_topology_alignment(cd->device, &required_alignment,
842 &alignment_offset, DEFAULT_DISK_ALIGNMENT);
844 r = LUKS_generate_phdr(&cd->hdr, cd->volume_key, cipher, cipher_mode,
845 (params && params->hash) ? params->hash : "sha1",
847 required_alignment / SECTOR_SIZE,
848 alignment_offset / SECTOR_SIZE,
849 cd->iteration_time, &cd->PBKDF2_per_sec,
850 cd->metadata_device, cd);
854 /* Wipe first 8 sectors - fs magic numbers etc. */
855 r = crypt_wipe(mdata_device(cd), 0, 8 * SECTOR_SIZE, CRYPT_WIPE_ZERO, 1);
858 log_err(cd, _("Cannot format device %s which is still in use.\n"),
861 log_err(cd, _("Cannot wipe header on device %s.\n"),
867 r = LUKS_write_phdr(mdata_device(cd), &cd->hdr, cd);
872 static int _crypt_format_loopaes(struct crypt_device *cd,
875 size_t volume_key_size,
876 struct crypt_params_loopaes *params)
878 if (!mdata_device(cd)) {
879 log_err(cd, _("Can't format LOOPAES without device.\n"));
883 if (volume_key_size > 1024) {
884 log_err(cd, _("Invalid key size.\n"));
888 cd->loopaes_key_size = volume_key_size;
890 cd->loopaes_cipher = strdup(cipher ?: DEFAULT_LOOPAES_CIPHER);
893 cd->loopaes_uuid = strdup(uuid);
895 if (params && params->hash)
896 cd->loopaes_hdr.hash = strdup(params->hash);
898 cd->loopaes_hdr.offset = params ? params->offset : 0;
899 cd->loopaes_hdr.skip = params ? params->skip : 0;
904 int crypt_format(struct crypt_device *cd,
907 const char *cipher_mode,
909 const char *volume_key,
910 size_t volume_key_size,
919 log_dbg("Context already formatted as %s.", cd->type);
923 log_dbg("Formatting device %s as type %s.", mdata_device(cd) ?: "(none)", type);
930 r = _crypt_format_plain(cd, cipher, cipher_mode,
931 uuid, volume_key_size, params);
932 else if (isLUKS(type))
933 r = _crypt_format_luks1(cd, cipher, cipher_mode,
934 uuid, volume_key, volume_key_size, params);
935 else if (isLOOPAES(type))
936 r = _crypt_format_loopaes(cd, cipher, uuid, volume_key_size, params);
938 /* FIXME: allow plugins here? */
939 log_err(cd, _("Unknown crypt device type %s requested.\n"), type);
943 if (!r && !(cd->type = strdup(type)))
947 crypt_free_volume_key(cd->volume_key);
948 cd->volume_key = NULL;
954 int crypt_load(struct crypt_device *cd,
955 const char *requested_type,
956 void *params __attribute__((unused)))
960 log_dbg("Trying to load %s crypt type from device %s.",
961 requested_type ?: "any", mdata_device(cd) ?: "(none)");
963 if (!mdata_device(cd))
966 if (requested_type && !isLUKS(requested_type))
969 if (cd->type && !isLUKS(cd->type)) {
970 log_dbg("Context is already initialised to type %s", cd->type);
974 r = _crypt_load_luks1(cd, 1);
978 /* cd->type and header must be set in context */
979 r = crypt_check_data_device_size(cd);
988 int crypt_resize(struct crypt_device *cd, const char *name, uint64_t new_size)
990 struct crypt_dm_active_device dmd;
993 /* Device context type must be initialised */
994 if (!cd->type || !crypt_get_uuid(cd))
997 log_dbg("Resizing device %s to %" PRIu64 " sectors.", name, new_size);
999 r = dm_query_device(name, DM_ACTIVE_DEVICE | DM_ACTIVE_CIPHER |
1000 DM_ACTIVE_UUID | DM_ACTIVE_KEYSIZE |
1001 DM_ACTIVE_KEY, &dmd);
1003 log_err(NULL, _("Device %s is not active.\n"), name);
1012 r = device_check_and_adjust(cd, dmd.device, DEV_OK, &new_size, &dmd.offset, &dmd.flags);
1016 if (new_size == dmd.size) {
1017 log_dbg("Device has already requested size %" PRIu64
1018 " sectors.", dmd.size);
1021 dmd.size = new_size;
1022 r = dm_create_device(name, cd->type, &dmd, 1);
1025 crypt_free_volume_key(dmd.vk);
1026 free(CONST_CAST(void*)dmd.cipher);
1027 free(CONST_CAST(void*)dmd.device);
1028 free(CONST_CAST(void*)dmd.uuid);
1033 int crypt_set_uuid(struct crypt_device *cd, const char *uuid)
1035 if (!isLUKS(cd->type)) {
1036 log_err(cd, _("This operation is not supported for this device type.\n"));
1040 if (uuid && !strncmp(uuid, cd->hdr.uuid, sizeof(cd->hdr.uuid))) {
1041 log_dbg("UUID is the same as requested (%s) for device %s.",
1042 uuid, mdata_device(cd));
1047 log_dbg("Requested new UUID change to %s for %s.", uuid, mdata_device(cd));
1049 log_dbg("Requested new UUID refresh for %s.", mdata_device(cd));
1051 if (!crypt_confirm(cd, _("Do you really want to change UUID of device?")))
1054 return LUKS_hdr_uuid_set(mdata_device(cd), &cd->hdr, uuid, cd);
1057 int crypt_header_backup(struct crypt_device *cd,
1058 const char *requested_type,
1059 const char *backup_file)
1063 if ((requested_type && !isLUKS(requested_type)) || !backup_file)
1066 r = init_crypto(cd);
1070 log_dbg("Requested header backup of device %s (%s) to "
1071 "file %s.", mdata_device(cd), requested_type, backup_file);
1073 return LUKS_hdr_backup(backup_file, mdata_device(cd), &cd->hdr, cd);
1076 int crypt_header_restore(struct crypt_device *cd,
1077 const char *requested_type,
1078 const char *backup_file)
1082 if (requested_type && !isLUKS(requested_type))
1085 /* Some hash functions need initialized gcrypt library */
1086 r = init_crypto(cd);
1090 log_dbg("Requested header restore to device %s (%s) from "
1091 "file %s.", mdata_device(cd), requested_type, backup_file);
1093 return LUKS_hdr_restore(backup_file, mdata_device(cd), &cd->hdr, cd);
1096 void crypt_free(struct crypt_device *cd)
1099 log_dbg("Releasing crypt device %s context.", mdata_device(cd));
1101 if (cd->loop_fd != -1)
1105 crypt_free_volume_key(cd->volume_key);
1108 free(cd->metadata_device);
1109 free(cd->backing_file);
1112 /* used in plain device only */
1113 free(CONST_CAST(void*)cd->plain_hdr.hash);
1114 free(cd->plain_cipher);
1115 free(cd->plain_cipher_mode);
1116 free(cd->plain_uuid);
1118 /* used in loop-AES device only */
1119 free(CONST_CAST(void*)cd->loopaes_hdr.hash);
1120 free(cd->loopaes_cipher);
1121 free(cd->loopaes_uuid);
1127 int crypt_suspend(struct crypt_device *cd,
1130 crypt_status_info ci;
1133 log_dbg("Suspending volume %s.", name);
1135 if (!isLUKS(cd->type)) {
1136 log_err(cd, _("This operation is supported only for LUKS device.\n"));
1141 ci = crypt_status(NULL, name);
1142 if (ci < CRYPT_ACTIVE) {
1143 log_err(cd, _("Volume %s is not active.\n"), name);
1147 if (!cd && dm_init(NULL, 1) < 0)
1150 r = dm_status_suspended(name);
1155 log_err(cd, _("Volume %s is already suspended.\n"), name);
1160 r = dm_suspend_and_wipe_key(name);
1162 log_err(cd, "Suspend is not supported for device %s.\n", name);
1164 log_err(cd, "Error during suspending device %s.\n", name);
1171 int crypt_resume_by_passphrase(struct crypt_device *cd,
1174 const char *passphrase,
1175 size_t passphrase_size)
1177 struct volume_key *vk = NULL;
1180 log_dbg("Resuming volume %s.", name);
1182 if (!isLUKS(cd->type)) {
1183 log_err(cd, _("This operation is supported only for LUKS device.\n"));
1188 r = dm_status_suspended(name);
1193 log_err(cd, _("Volume %s is not suspended.\n"), name);
1198 r = LUKS_open_key_with_hdr(mdata_device(cd), keyslot, passphrase,
1199 passphrase_size, &cd->hdr, &vk, cd);
1201 r = volume_key_by_terminal_passphrase(cd, keyslot, &vk);
1205 r = dm_resume_and_reinstate_key(name, vk->keylength, vk->key);
1207 log_err(cd, "Resume is not supported for device %s.\n", name);
1209 log_err(cd, "Error during resuming device %s.\n", name);
1213 crypt_free_volume_key(vk);
1214 return r < 0 ? r : keyslot;
1217 int crypt_resume_by_keyfile(struct crypt_device *cd,
1220 const char *keyfile,
1221 size_t keyfile_size)
1223 struct volume_key *vk = NULL;
1224 char *passphrase_read = NULL;
1225 size_t passphrase_size_read;
1228 log_dbg("Resuming volume %s.", name);
1230 if (!isLUKS(cd->type)) {
1231 log_err(cd, _("This operation is supported only for LUKS device.\n"));
1236 r = dm_status_suspended(name);
1241 log_err(cd, _("Volume %s is not suspended.\n"), name);
1248 r = key_from_file(cd, _("Enter passphrase: "), &passphrase_read,
1249 &passphrase_size_read, keyfile, keyfile_size);
1253 r = LUKS_open_key_with_hdr(mdata_device(cd), keyslot, passphrase_read,
1254 passphrase_size_read, &cd->hdr, &vk, cd);
1259 r = dm_resume_and_reinstate_key(name, vk->keylength, vk->key);
1261 log_err(cd, "Error during resuming device %s.\n", name);
1263 crypt_safe_free(passphrase_read);
1264 crypt_free_volume_key(vk);
1265 return r < 0 ? r : keyslot;
1268 // slot manipulation
1269 int crypt_keyslot_add_by_passphrase(struct crypt_device *cd,
1270 int keyslot, // -1 any
1271 const char *passphrase, // NULL -> terminal
1272 size_t passphrase_size,
1273 const char *new_passphrase, // NULL -> terminal
1274 size_t new_passphrase_size)
1276 struct volume_key *vk = NULL;
1277 char *password = NULL, *new_password = NULL;
1278 size_t passwordLen, new_passwordLen;
1281 log_dbg("Adding new keyslot, existing passphrase %sprovided,"
1282 "new passphrase %sprovided.",
1283 passphrase ? "" : "not ", new_passphrase ? "" : "not ");
1285 if (!isLUKS(cd->type)) {
1286 log_err(cd, _("This operation is supported only for LUKS device.\n"));
1290 r = keyslot_verify_or_find_empty(cd, &keyslot);
1294 if (!LUKS_keyslot_active_count(&cd->hdr)) {
1295 /* No slots used, try to use pre-generated key in header */
1296 if (cd->volume_key) {
1297 vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
1298 r = vk ? 0 : -ENOMEM;
1300 log_err(cd, _("Cannot add key slot, all slots disabled and no volume key provided.\n"));
1303 } else if (passphrase) {
1304 /* Passphrase provided, use it to unlock existing keyslot */
1305 r = LUKS_open_key_with_hdr(mdata_device(cd), CRYPT_ANY_SLOT, passphrase,
1306 passphrase_size, &cd->hdr, &vk, cd);
1308 /* Passphrase not provided, ask first and use it to unlock existing keyslot */
1309 r = key_from_terminal(cd, _("Enter any passphrase: "),
1310 &password, &passwordLen, 0);
1314 r = LUKS_open_key_with_hdr(mdata_device(cd), CRYPT_ANY_SLOT, password,
1315 passwordLen, &cd->hdr, &vk, cd);
1316 crypt_safe_free(password);
1322 if (new_passphrase) {
1323 new_password = CONST_CAST(char*)new_passphrase;
1324 new_passwordLen = new_passphrase_size;
1326 r = key_from_terminal(cd, _("Enter new passphrase for key slot: "),
1327 &new_password, &new_passwordLen, 1);
1332 r = LUKS_set_key(mdata_device(cd), keyslot, new_password, new_passwordLen,
1333 &cd->hdr, vk, cd->iteration_time, &cd->PBKDF2_per_sec, cd);
1338 if (!new_passphrase)
1339 crypt_safe_free(new_password);
1340 crypt_free_volume_key(vk);
1341 return r ?: keyslot;
1344 int crypt_keyslot_add_by_keyfile(struct crypt_device *cd,
1346 const char *keyfile,
1347 size_t keyfile_size,
1348 const char *new_keyfile,
1349 size_t new_keyfile_size)
1351 struct volume_key *vk = NULL;
1352 char *password = NULL; size_t passwordLen;
1353 char *new_password = NULL; size_t new_passwordLen;
1356 log_dbg("Adding new keyslot, existing keyfile %s, new keyfile %s.",
1357 keyfile ?: "[none]", new_keyfile ?: "[none]");
1359 if (!isLUKS(cd->type)) {
1360 log_err(cd, _("This operation is supported only for LUKS device.\n"));
1364 r = keyslot_verify_or_find_empty(cd, &keyslot);
1368 if (!LUKS_keyslot_active_count(&cd->hdr)) {
1369 /* No slots used, try to use pre-generated key in header */
1370 if (cd->volume_key) {
1371 vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
1372 r = vk ? 0 : -ENOMEM;
1374 log_err(cd, _("Cannot add key slot, all slots disabled and no volume key provided.\n"));
1378 /* Read password from file of (if NULL) from terminal */
1380 r = key_from_file(cd, _("Enter any passphrase: "),
1381 &password, &passwordLen,
1382 keyfile, keyfile_size);
1384 r = key_from_terminal(cd, _("Enter any passphrase: "),
1385 &password, &passwordLen, 0);
1389 r = LUKS_open_key_with_hdr(mdata_device(cd), CRYPT_ANY_SLOT, password, passwordLen,
1397 r = key_from_file(cd, _("Enter new passphrase for key slot: "),
1398 &new_password, &new_passwordLen, new_keyfile,
1401 r = key_from_terminal(cd, _("Enter new passphrase for key slot: "),
1402 &new_password, &new_passwordLen, 1);
1406 r = LUKS_set_key(mdata_device(cd), keyslot, new_password, new_passwordLen,
1407 &cd->hdr, vk, cd->iteration_time, &cd->PBKDF2_per_sec, cd);
1409 crypt_safe_free(password);
1410 crypt_safe_free(new_password);
1411 crypt_free_volume_key(vk);
1412 return r < 0 ? r : keyslot;
1415 int crypt_keyslot_add_by_volume_key(struct crypt_device *cd,
1417 const char *volume_key,
1418 size_t volume_key_size,
1419 const char *passphrase,
1420 size_t passphrase_size)
1422 struct volume_key *vk = NULL;
1424 char *new_password = NULL; size_t new_passwordLen;
1426 log_dbg("Adding new keyslot %d using volume key.", keyslot);
1428 if (!isLUKS(cd->type)) {
1429 log_err(cd, _("This operation is supported only for LUKS device.\n"));
1434 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
1435 else if (cd->volume_key)
1436 vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
1441 r = LUKS_verify_volume_key(&cd->hdr, vk);
1443 log_err(cd, _("Volume key does not match the volume.\n"));
1447 r = keyslot_verify_or_find_empty(cd, &keyslot);
1452 r = key_from_terminal(cd, _("Enter new passphrase for key slot: "),
1453 &new_password, &new_passwordLen, 1);
1456 passphrase = new_password;
1457 passphrase_size = new_passwordLen;
1460 r = LUKS_set_key(mdata_device(cd), keyslot, passphrase, passphrase_size,
1461 &cd->hdr, vk, cd->iteration_time, &cd->PBKDF2_per_sec, cd);
1463 crypt_safe_free(new_password);
1464 crypt_free_volume_key(vk);
1465 return (r < 0) ? r : keyslot;
1468 int crypt_keyslot_destroy(struct crypt_device *cd, int keyslot)
1470 crypt_keyslot_info ki;
1472 log_dbg("Destroying keyslot %d.", keyslot);
1474 if (!isLUKS(cd->type)) {
1475 log_err(cd, _("This operation is supported only for LUKS device.\n"));
1479 ki = crypt_keyslot_status(cd, keyslot);
1480 if (ki == CRYPT_SLOT_INVALID) {
1481 log_err(cd, _("Key slot %d is invalid.\n"), keyslot);
1485 if (ki == CRYPT_SLOT_INACTIVE) {
1486 log_err(cd, _("Key slot %d is not used.\n"), keyslot);
1490 return LUKS_del_key(mdata_device(cd), keyslot, &cd->hdr, cd);
1493 // activation/deactivation of device mapping
1494 int crypt_activate_by_passphrase(struct crypt_device *cd,
1497 const char *passphrase,
1498 size_t passphrase_size,
1501 crypt_status_info ci;
1502 struct volume_key *vk = NULL;
1503 char *read_passphrase = NULL;
1504 size_t passphraseLen = 0;
1507 log_dbg("%s volume %s [keyslot %d] using %spassphrase.",
1508 name ? "Activating" : "Checking", name ?: "",
1509 keyslot, passphrase ? "" : "[none] ");
1512 ci = crypt_status(NULL, name);
1513 if (ci == CRYPT_INVALID)
1515 else if (ci >= CRYPT_ACTIVE) {
1516 log_err(cd, _("Device %s already exists.\n"), name);
1521 /* plain, use hashed passphrase */
1522 if (isPLAIN(cd->type)) {
1527 r = key_from_terminal(cd, NULL, &read_passphrase,
1531 passphrase = read_passphrase;
1532 passphrase_size = passphraseLen;
1535 r = process_key(cd, cd->plain_hdr.hash,
1537 passphrase, passphrase_size, &vk);
1541 r = PLAIN_activate(cd, name, vk, cd->plain_hdr.size, flags);
1543 } else if (isLUKS(cd->type)) {
1544 /* provided passphrase, do not retry */
1546 r = LUKS_open_key_with_hdr(mdata_device(cd), keyslot, passphrase,
1547 passphrase_size, &cd->hdr, &vk, cd);
1549 r = volume_key_by_terminal_passphrase(cd, keyslot, &vk);
1554 r = LUKS1_activate(cd, name, vk, flags);
1559 crypt_safe_free(read_passphrase);
1560 crypt_free_volume_key(vk);
1562 return r < 0 ? r : keyslot;
1565 int crypt_activate_by_keyfile(struct crypt_device *cd,
1568 const char *keyfile,
1569 size_t keyfile_size,
1572 crypt_status_info ci;
1573 struct volume_key *vk = NULL;
1574 char *passphrase_read = NULL;
1575 size_t passphrase_size_read;
1576 unsigned int key_count = 0;
1579 log_dbg("Activating volume %s [keyslot %d] using keyfile %s.",
1580 name ?: "", keyslot, keyfile ?: "[none]");
1583 ci = crypt_status(NULL, name);
1584 if (ci == CRYPT_INVALID)
1586 else if (ci >= CRYPT_ACTIVE) {
1587 log_err(cd, _("Device %s already exists.\n"), name);
1595 if (isPLAIN(cd->type)) {
1599 r = key_from_file(cd, _("Enter passphrase: "),
1600 &passphrase_read, &passphrase_size_read,
1601 keyfile, keyfile_size);
1605 r = process_key(cd, cd->plain_hdr.hash,
1607 passphrase_read, passphrase_size_read, &vk);
1611 r = PLAIN_activate(cd, name, vk, cd->plain_hdr.size, flags);
1612 } else if (isLUKS(cd->type)) {
1613 r = key_from_file(cd, _("Enter passphrase: "), &passphrase_read,
1614 &passphrase_size_read, keyfile, keyfile_size);
1617 r = LUKS_open_key_with_hdr(mdata_device(cd), keyslot, passphrase_read,
1618 passphrase_size_read, &cd->hdr, &vk, cd);
1624 r = LUKS1_activate(cd, name, vk, flags);
1629 } else if (isLOOPAES(cd->type)) {
1630 r = key_from_file(cd, NULL, &passphrase_read, &passphrase_size_read,
1631 keyfile, keyfile_size);
1634 r = LOOPAES_parse_keyfile(cd, &vk, cd->loopaes_hdr.hash, &key_count,
1635 passphrase_read, passphrase_size_read);
1639 r = LOOPAES_activate(cd, name, cd->loopaes_cipher,
1640 key_count, vk, flags);
1645 crypt_safe_free(passphrase_read);
1646 crypt_free_volume_key(vk);
1651 int crypt_activate_by_volume_key(struct crypt_device *cd,
1653 const char *volume_key,
1654 size_t volume_key_size,
1657 crypt_status_info ci;
1658 struct volume_key *vk = NULL;
1661 log_dbg("Activating volume %s by volume key.", name);
1664 ci = crypt_status(NULL, name);
1665 if (ci == CRYPT_INVALID)
1667 else if (ci >= CRYPT_ACTIVE) {
1668 log_err(cd, _("Device %s already exists.\n"), name);
1673 /* use key directly, no hash */
1674 if (isPLAIN(cd->type)) {
1678 if (!volume_key || !volume_key_size || volume_key_size != cd->plain_key_size) {
1679 log_err(cd, _("Incorrect volume key specified for plain device.\n"));
1683 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
1687 r = PLAIN_activate(cd, name, vk, cd->plain_hdr.size, flags);
1688 } else if (isLUKS(cd->type)) {
1689 /* If key is not provided, try to use internal key */
1691 if (!cd->volume_key) {
1692 log_err(cd, _("Volume key does not match the volume.\n"));
1695 volume_key_size = cd->volume_key->keylength;
1696 volume_key = cd->volume_key->key;
1699 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
1702 r = LUKS_verify_volume_key(&cd->hdr, vk);
1705 log_err(cd, _("Volume key does not match the volume.\n"));
1708 r = LUKS1_activate(cd, name, vk, flags);
1710 log_err(cd, _("Device type is not properly initialised.\n"));
1712 crypt_free_volume_key(vk);
1717 int crypt_deactivate(struct crypt_device *cd, const char *name)
1724 log_dbg("Deactivating volume %s.", name);
1726 if (!cd && dm_init(NULL, 1) < 0)
1729 switch (crypt_status(cd, name)) {
1731 r = dm_remove_device(name, 0, 0);
1734 log_err(cd, _("Device %s is busy.\n"), name);
1737 case CRYPT_INACTIVE:
1738 log_err(cd, _("Device %s is not active.\n"), name);
1742 log_err(cd, _("Invalid device %s.\n"), name);
1752 int crypt_volume_key_get(struct crypt_device *cd,
1755 size_t *volume_key_size,
1756 const char *passphrase,
1757 size_t passphrase_size)
1759 struct volume_key *vk = NULL;
1763 key_len = crypt_get_volume_key_size(cd);
1764 if (key_len > *volume_key_size) {
1765 log_err(cd, _("Volume key buffer too small.\n"));
1769 if (isPLAIN(cd->type) && cd->plain_hdr.hash) {
1770 r = process_key(cd, cd->plain_hdr.hash, key_len,
1771 passphrase, passphrase_size, &vk);
1773 log_err(cd, _("Cannot retrieve volume key for plain device.\n"));
1774 } else if (isLUKS(cd->type)) {
1775 r = LUKS_open_key_with_hdr(mdata_device(cd), keyslot, passphrase,
1776 passphrase_size, &cd->hdr, &vk, cd);
1779 log_err(cd, _("This operation is not supported for %s crypt device.\n"), cd->type ?: "(none)");
1782 memcpy(volume_key, vk->key, vk->keylength);
1783 *volume_key_size = vk->keylength;
1786 crypt_free_volume_key(vk);
1790 int crypt_volume_key_verify(struct crypt_device *cd,
1791 const char *volume_key,
1792 size_t volume_key_size)
1794 struct volume_key *vk;
1797 if (!isLUKS(cd->type)) {
1798 log_err(cd, _("This operation is supported only for LUKS device.\n"));
1802 vk = crypt_alloc_volume_key(volume_key_size, volume_key);
1806 r = LUKS_verify_volume_key(&cd->hdr, vk);
1809 log_err(cd, _("Volume key does not match the volume.\n"));
1811 crypt_free_volume_key(vk);
1816 void crypt_set_timeout(struct crypt_device *cd, uint64_t timeout_sec)
1818 log_dbg("Timeout set to %" PRIu64 " miliseconds.", timeout_sec);
1819 cd->timeout = timeout_sec;
1822 void crypt_set_password_retry(struct crypt_device *cd, int tries)
1824 log_dbg("Password retry count set to %d.", tries);
1828 void crypt_set_iteration_time(struct crypt_device *cd, uint64_t iteration_time_ms)
1830 log_dbg("Iteration time set to %" PRIu64 " miliseconds.", iteration_time_ms);
1831 cd->iteration_time = iteration_time_ms;
1833 void crypt_set_iterarion_time(struct crypt_device *cd, uint64_t iteration_time_ms)
1835 crypt_set_iteration_time(cd, iteration_time_ms);
1838 void crypt_set_password_verify(struct crypt_device *cd, int password_verify)
1840 log_dbg("Password verification %s.", password_verify ? "enabled" : "disabled");
1841 cd->password_verify = password_verify ? 1 : 0;
1844 void crypt_set_rng_type(struct crypt_device *cd, int rng_type)
1847 case CRYPT_RNG_URANDOM:
1848 case CRYPT_RNG_RANDOM:
1849 log_dbg("RNG set to %d (%s).", rng_type, rng_type ? "random" : "urandom");
1850 cd->rng_type = rng_type;
1854 int crypt_get_rng_type(struct crypt_device *cd)
1859 return cd->rng_type;
1862 int crypt_memory_lock(struct crypt_device *cd, int lock)
1864 return lock ? crypt_memlock_inc(cd) : crypt_memlock_dec(cd);
1868 crypt_status_info crypt_status(struct crypt_device *cd, const char *name)
1872 if (!cd && dm_init(NULL, 1) < 0)
1873 return CRYPT_INVALID;
1875 r = dm_status_device(name);
1880 if (r < 0 && r != -ENODEV)
1881 return CRYPT_INVALID;
1884 return CRYPT_ACTIVE;
1889 return CRYPT_INACTIVE;
1892 static void hexprintICB(struct crypt_device *cd, char *d, int n)
1895 for(i = 0; i < n; i++)
1896 log_std(cd, "%02hhx ", (char)d[i]);
1899 int crypt_dump(struct crypt_device *cd)
1902 if (!isLUKS(cd->type)) { //FIXME
1903 log_err(cd, _("This operation is supported only for LUKS device.\n"));
1907 log_std(cd, "LUKS header information for %s\n\n", mdata_device(cd));
1908 log_std(cd, "Version: \t%d\n", cd->hdr.version);
1909 log_std(cd, "Cipher name: \t%s\n", cd->hdr.cipherName);
1910 log_std(cd, "Cipher mode: \t%s\n", cd->hdr.cipherMode);
1911 log_std(cd, "Hash spec: \t%s\n", cd->hdr.hashSpec);
1912 log_std(cd, "Payload offset:\t%d\n", cd->hdr.payloadOffset);
1913 log_std(cd, "MK bits: \t%d\n", cd->hdr.keyBytes * 8);
1914 log_std(cd, "MK digest: \t");
1915 hexprintICB(cd, cd->hdr.mkDigest, LUKS_DIGESTSIZE);
1917 log_std(cd, "MK salt: \t");
1918 hexprintICB(cd, cd->hdr.mkDigestSalt, LUKS_SALTSIZE/2);
1919 log_std(cd, "\n \t");
1920 hexprintICB(cd, cd->hdr.mkDigestSalt+LUKS_SALTSIZE/2, LUKS_SALTSIZE/2);
1922 log_std(cd, "MK iterations: \t%d\n", cd->hdr.mkDigestIterations);
1923 log_std(cd, "UUID: \t%s\n\n", cd->hdr.uuid);
1924 for(i = 0; i < LUKS_NUMKEYS; i++) {
1925 if(cd->hdr.keyblock[i].active == LUKS_KEY_ENABLED) {
1926 log_std(cd, "Key Slot %d: ENABLED\n",i);
1927 log_std(cd, "\tIterations: \t%d\n",
1928 cd->hdr.keyblock[i].passwordIterations);
1929 log_std(cd, "\tSalt: \t");
1930 hexprintICB(cd, cd->hdr.keyblock[i].passwordSalt,
1932 log_std(cd, "\n\t \t");
1933 hexprintICB(cd, cd->hdr.keyblock[i].passwordSalt +
1934 LUKS_SALTSIZE/2, LUKS_SALTSIZE/2);
1937 log_std(cd, "\tKey material offset:\t%d\n",
1938 cd->hdr.keyblock[i].keyMaterialOffset);
1939 log_std(cd, "\tAF stripes: \t%d\n",
1940 cd->hdr.keyblock[i].stripes);
1943 log_std(cd, "Key Slot %d: DISABLED\n", i);
1949 const char *crypt_get_cipher(struct crypt_device *cd)
1951 if (isPLAIN(cd->type))
1952 return cd->plain_cipher;
1954 if (isLUKS(cd->type))
1955 return cd->hdr.cipherName;
1957 if (isLOOPAES(cd->type))
1958 return cd->loopaes_cipher;
1963 const char *crypt_get_cipher_mode(struct crypt_device *cd)
1965 if (isPLAIN(cd->type))
1966 return cd->plain_cipher_mode;
1968 if (isLUKS(cd->type))
1969 return cd->hdr.cipherMode;
1971 if (isLOOPAES(cd->type))
1972 return cd->loopaes_cipher_mode;
1977 const char *crypt_get_uuid(struct crypt_device *cd)
1979 if (isLUKS(cd->type))
1980 return cd->hdr.uuid;
1982 if (isPLAIN(cd->type))
1983 return cd->plain_uuid;
1985 if (isLOOPAES(cd->type))
1986 return cd->loopaes_uuid;
1991 const char *crypt_get_device_name(struct crypt_device *cd)
1997 int crypt_get_volume_key_size(struct crypt_device *cd)
1999 if (isPLAIN(cd->type))
2000 return cd->plain_key_size;
2002 if (isLUKS(cd->type))
2003 return cd->hdr.keyBytes;
2005 if (isLOOPAES(cd->type))
2006 return cd->loopaes_key_size;
2011 uint64_t crypt_get_data_offset(struct crypt_device *cd)
2013 if (isPLAIN(cd->type))
2014 return cd->plain_hdr.offset;
2016 if (isLUKS(cd->type))
2017 return cd->hdr.payloadOffset;
2019 if (isLOOPAES(cd->type))
2020 return cd->loopaes_hdr.offset;
2025 uint64_t crypt_get_iv_offset(struct crypt_device *cd)
2027 if (isPLAIN(cd->type))
2028 return cd->plain_hdr.skip;
2030 if (isLUKS(cd->type))
2033 if (isLOOPAES(cd->type))
2034 return cd->loopaes_hdr.skip;
2039 crypt_keyslot_info crypt_keyslot_status(struct crypt_device *cd, int keyslot)
2041 if (!isLUKS(cd->type)) {
2042 log_err(cd, _("This operation is supported only for LUKS device.\n"));
2043 return CRYPT_SLOT_INVALID;
2046 return LUKS_keyslot_info(&cd->hdr, keyslot);
2049 int crypt_keyslot_max(const char *type)
2051 if (type && isLUKS(type))
2052 return LUKS_NUMKEYS;
2057 const char *crypt_get_type(struct crypt_device *cd)
2062 int crypt_get_active_device(struct crypt_device *cd __attribute__((unused)),
2064 struct crypt_active_device *cad)
2066 struct crypt_dm_active_device dmd;
2069 r = dm_query_device(name, 0, &dmd);
2073 cad->offset = dmd.offset;
2074 cad->iv_offset = dmd.iv_offset;
2075 cad->size = dmd.size;
2076 cad->flags = dmd.flags;