2 * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
35 #include <readpassphrase.h>
43 #include <sys/param.h>
45 #include <sys/resource.h>
46 #include <opencrypto/cryptodev.h>
47 #include <geom/eli/g_eli.h>
48 #include <geom/eli/pkcs5v2.h>
50 #include "core/geom.h"
51 #include "misc/subr.h"
54 uint32_t lib_version = G_LIB_VERSION;
55 uint32_t version = G_ELI_VERSION;
57 static char aalgo[] = "none";
58 static char ealgo[] = "aes";
59 static intmax_t keylen = 0;
60 static intmax_t keyno = -1;
61 static intmax_t iterations = -1;
62 static intmax_t sectorsize = 0;
63 static char keyfile[] = "", newkeyfile[] = "";
65 static void eli_main(struct gctl_req *req, unsigned flags);
66 static void eli_init(struct gctl_req *req);
67 static void eli_attach(struct gctl_req *req);
68 static void eli_configure(struct gctl_req *req);
69 static void eli_setkey(struct gctl_req *req);
70 static void eli_delkey(struct gctl_req *req);
71 static void eli_kill(struct gctl_req *req);
72 static void eli_backup(struct gctl_req *req);
73 static void eli_restore(struct gctl_req *req);
74 static void eli_clear(struct gctl_req *req);
75 static void eli_dump(struct gctl_req *req);
80 * init [-bhPv] [-a aalgo] [-e ealgo] [-i iterations] [-l keylen] [-K newkeyfile] prov
81 * label - alias for 'init'
82 * attach [-dprv] [-k keyfile] prov
83 * detach [-fl] prov ...
84 * stop - alias for 'detach'
85 * onetime [-d] [-a aalgo] [-e ealgo] [-l keylen] prov ...
86 * configure [-bB] prov ...
87 * setkey [-pPv] [-n keyno] [-k keyfile] [-K newkeyfile] prov
88 * delkey [-afv] [-n keyno] prov
89 * kill [-av] [prov ...]
90 * backup [-v] prov file
91 * restore [-v] file prov
95 struct g_command class_commands[] = {
96 { "init", G_FLAG_VERBOSE, eli_main,
98 { 'a', "aalgo", aalgo, G_TYPE_STRING },
99 { 'b', "boot", NULL, G_TYPE_BOOL },
100 { 'e', "ealgo", ealgo, G_TYPE_STRING },
101 { 'i', "iterations", &iterations, G_TYPE_NUMBER },
102 { 'K', "newkeyfile", newkeyfile, G_TYPE_STRING },
103 { 'l', "keylen", &keylen, G_TYPE_NUMBER },
104 { 'P', "nonewpassphrase", NULL, G_TYPE_BOOL },
105 { 's', "sectorsize", §orsize, G_TYPE_NUMBER },
108 NULL, "[-bPv] [-a aalgo] [-e ealgo] [-i iterations] [-l keylen] [-K newkeyfile] [-s sectorsize] prov"
110 { "label", G_FLAG_VERBOSE, eli_main,
112 { 'a', "aalgo", aalgo, G_TYPE_STRING },
113 { 'b', "boot", NULL, G_TYPE_BOOL },
114 { 'e', "ealgo", ealgo, G_TYPE_STRING },
115 { 'i', "iterations", &iterations, G_TYPE_NUMBER },
116 { 'K', "newkeyfile", newkeyfile, G_TYPE_STRING },
117 { 'l', "keylen", &keylen, G_TYPE_NUMBER },
118 { 'P', "nonewpassphrase", NULL, G_TYPE_BOOL },
119 { 's', "sectorsize", §orsize, G_TYPE_NUMBER },
122 NULL, "- an alias for 'init'"
124 { "attach", G_FLAG_VERBOSE | G_FLAG_LOADKLD, eli_main,
126 { 'd', "detach", NULL, G_TYPE_BOOL },
127 { 'k', "keyfile", keyfile, G_TYPE_STRING },
128 { 'p', "nopassphrase", NULL, G_TYPE_BOOL },
129 { 'r', "readonly", NULL, G_TYPE_BOOL },
132 NULL, "[-dprv] [-k keyfile] prov"
136 { 'f', "force", NULL, G_TYPE_BOOL },
137 { 'l', "last", NULL, G_TYPE_BOOL },
140 NULL, "[-fl] prov ..."
144 { 'f', "force", NULL, G_TYPE_BOOL },
145 { 'l', "last", NULL, G_TYPE_BOOL },
148 NULL, "- an alias for 'detach'"
150 { "onetime", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL,
152 { 'a', "aalgo", aalgo, G_TYPE_STRING },
153 { 'd', "detach", NULL, G_TYPE_BOOL },
154 { 'e', "ealgo", ealgo, G_TYPE_STRING },
155 { 'l', "keylen", &keylen, G_TYPE_NUMBER },
156 { 's', "sectorsize", §orsize, G_TYPE_NUMBER },
159 NULL, "[-d] [-a aalgo] [-e ealgo] [-l keylen] [-s sectorsize] prov ..."
161 { "configure", G_FLAG_VERBOSE, eli_main,
163 { 'b', "boot", NULL, G_TYPE_BOOL },
164 { 'B', "noboot", NULL, G_TYPE_BOOL },
167 NULL, "[-bB] prov ..."
169 { "setkey", G_FLAG_VERBOSE, eli_main,
171 { 'i', "iterations", &iterations, G_TYPE_NUMBER },
172 { 'k', "keyfile", keyfile, G_TYPE_STRING },
173 { 'K', "newkeyfile", newkeyfile, G_TYPE_STRING },
174 { 'n', "keyno", &keyno, G_TYPE_NUMBER },
175 { 'p', "nopassphrase", NULL, G_TYPE_BOOL },
176 { 'P', "nonewpassphrase", NULL, G_TYPE_BOOL },
179 NULL, "[-pPv] [-n keyno] [-i iterations] [-k keyfile] [-K newkeyfile] prov"
181 { "delkey", G_FLAG_VERBOSE, eli_main,
183 { 'a', "all", NULL, G_TYPE_BOOL },
184 { 'f', "force", NULL, G_TYPE_BOOL },
185 { 'n', "keyno", &keyno, G_TYPE_NUMBER },
188 NULL, "[-afv] [-n keyno] prov"
190 { "kill", G_FLAG_VERBOSE, eli_main,
192 { 'a', "all", NULL, G_TYPE_BOOL },
195 NULL, "[-av] [prov ...]"
197 { "backup", G_FLAG_VERBOSE, eli_main, G_NULL_OPTS, NULL,
200 { "restore", G_FLAG_VERBOSE, eli_main, G_NULL_OPTS, NULL,
203 { "clear", G_FLAG_VERBOSE, eli_main, G_NULL_OPTS, NULL,
206 { "dump", G_FLAG_VERBOSE, eli_main, G_NULL_OPTS, NULL,
212 static int verbose = 0;
215 eli_protect(struct gctl_req *req)
219 /* Disable core dumps. */
222 if (setrlimit(RLIMIT_CORE, &rl) == -1) {
223 gctl_error(req, "Cannot disable core dumps: %s.",
227 /* Disable swapping. */
228 if (mlockall(MCL_FUTURE) == -1) {
229 gctl_error(req, "Cannot lock memory: %s.", strerror(errno));
236 eli_main(struct gctl_req *req, unsigned flags)
240 if (eli_protect(req) == -1)
243 if ((flags & G_FLAG_VERBOSE) != 0)
246 name = gctl_get_ascii(req, "verb");
248 gctl_error(req, "No '%s' argument.", "verb");
251 if (strcmp(name, "init") == 0 || strcmp(name, "label") == 0)
253 else if (strcmp(name, "attach") == 0)
255 else if (strcmp(name, "configure") == 0)
257 else if (strcmp(name, "setkey") == 0)
259 else if (strcmp(name, "delkey") == 0)
261 else if (strcmp(name, "kill") == 0)
263 else if (strcmp(name, "backup") == 0)
265 else if (strcmp(name, "restore") == 0)
267 else if (strcmp(name, "dump") == 0)
269 else if (strcmp(name, "clear") == 0)
272 gctl_error(req, "Unknown command: %s.", name);
276 arc4rand(unsigned char *buf, size_t size)
282 buf4 = (uint32_t *)buf;
285 for (i = 0; i < size4; i++)
286 buf4[i] = arc4random();
287 for (i *= 4; i < size; i++)
288 buf[i] = arc4random() % 0xff;
292 eli_is_attached(const char *prov)
294 char name[MAXPATHLEN];
298 * Not the best way to do it, but the easiest.
299 * We try to open provider and check if it is a GEOM provider
300 * by asking about its sectorsize.
302 snprintf(name, sizeof(name), "%s%s", prov, G_ELI_SUFFIX);
303 secsize = g_get_sectorsize(name);
309 static unsigned char *
310 eli_genkey(struct gctl_req *req, struct g_eli_metadata *md, unsigned char *key,
315 int error, nopassphrase;
318 gctl_get_int(req, new ? "nonewpassphrase" : "nopassphrase");
320 g_eli_crypto_hmac_init(&ctx, NULL, 0);
322 str = gctl_get_ascii(req, new ? "newkeyfile" : "keyfile");
323 if (str[0] == '\0' && nopassphrase) {
324 gctl_error(req, "No key components given.");
326 } else if (str[0] != '\0') {
331 if (strcmp(str, "-") == 0)
334 fd = open(str, O_RDONLY);
336 gctl_error(req, "Cannot open keyfile %s: %s.",
337 str, strerror(errno));
341 while ((done = read(fd, buf, sizeof(buf))) > 0)
342 g_eli_crypto_hmac_update(&ctx, buf, done);
344 if (strcmp(str, "-") != 0)
346 bzero(buf, sizeof(buf));
348 gctl_error(req, "Cannot read keyfile %s: %s.", str,
355 char buf1[BUFSIZ], buf2[BUFSIZ], *p;
357 if (!new && md->md_iterations == -1) {
358 gctl_error(req, "Missing -p flag.");
363 new ? "Enter new passphrase:" : "Enter passphrase:",
364 buf1, sizeof(buf1), RPP_ECHO_OFF | RPP_REQUIRE_TTY);
366 bzero(buf1, sizeof(buf1));
367 gctl_error(req, "Cannot read passphrase: %s.",
373 p = readpassphrase("Reenter new passphrase: ",
375 RPP_ECHO_OFF | RPP_REQUIRE_TTY);
377 bzero(buf1, sizeof(buf1));
379 "Cannot read passphrase: %s.",
384 if (strcmp(buf1, buf2) != 0) {
385 bzero(buf2, sizeof(buf2));
386 fprintf(stderr, "They didn't match.\n");
389 bzero(buf2, sizeof(buf2));
394 * Field md_iterations equal to -1 means "choose some sane
397 if (md->md_iterations == -1) {
400 printf("Calculating number of iterations...\n");
401 md->md_iterations = pkcs5v2_calculate(2000000);
402 assert(md->md_iterations > 0);
404 printf("Done, using %d iterations.\n",
409 * If md_iterations is equal to 0, user don't want PKCS#5v2.
411 if (md->md_iterations == 0) {
412 g_eli_crypto_hmac_update(&ctx, md->md_salt,
413 sizeof(md->md_salt));
414 g_eli_crypto_hmac_update(&ctx, buf1, strlen(buf1));
415 } else /* if (md->md_iterations > 0) */ {
416 unsigned char dkey[G_ELI_USERKEYLEN];
418 pkcs5v2_genkey(dkey, sizeof(dkey), md->md_salt,
419 sizeof(md->md_salt), buf1, md->md_iterations);
420 g_eli_crypto_hmac_update(&ctx, dkey, sizeof(dkey));
421 bzero(dkey, sizeof(dkey));
423 bzero(buf1, sizeof(buf1));
425 g_eli_crypto_hmac_final(&ctx, key, 0);
430 eli_metadata_read(struct gctl_req *req, const char *prov,
431 struct g_eli_metadata *md)
433 unsigned char sector[sizeof(struct g_eli_metadata)];
436 if (g_get_sectorsize(prov) == 0) {
439 /* This is a file probably. */
440 fd = open(prov, O_RDONLY);
442 gctl_error(req, "Cannot open %s: %s.", prov,
446 if (read(fd, sector, sizeof(sector)) != sizeof(sector)) {
447 gctl_error(req, "Cannot read metadata from %s: %s.",
448 prov, strerror(errno));
454 /* This is a GEOM provider. */
455 error = g_metadata_read(prov, sector, sizeof(sector),
458 gctl_error(req, "Cannot read metadata from %s: %s.",
459 prov, strerror(error));
463 if (eli_metadata_decode(sector, md) != 0) {
464 gctl_error(req, "MD5 hash mismatch for %s.", prov);
471 eli_metadata_store(struct gctl_req *req, const char *prov,
472 struct g_eli_metadata *md)
474 unsigned char sector[sizeof(struct g_eli_metadata)];
477 eli_metadata_encode(md, sector);
478 if (g_get_sectorsize(prov) == 0) {
481 /* This is a file probably. */
482 fd = open(prov, O_WRONLY | O_TRUNC);
484 gctl_error(req, "Cannot open %s: %s.", prov,
486 bzero(sector, sizeof(sector));
489 if (write(fd, sector, sizeof(sector)) != sizeof(sector)) {
490 gctl_error(req, "Cannot write metadata to %s: %s.",
491 prov, strerror(errno));
492 bzero(sector, sizeof(sector));
498 /* This is a GEOM provider. */
499 error = g_metadata_store(prov, sector, sizeof(sector));
501 gctl_error(req, "Cannot write metadata to %s: %s.",
502 prov, strerror(errno));
503 bzero(sector, sizeof(sector));
507 bzero(sector, sizeof(sector));
512 eli_init(struct gctl_req *req)
514 struct g_eli_metadata md;
515 unsigned char sector[sizeof(struct g_eli_metadata)];
516 unsigned char key[G_ELI_USERKEYLEN];
517 const char *str, *prov;
523 nargs = gctl_get_int(req, "nargs");
525 gctl_error(req, "Invalid number of arguments.");
528 prov = gctl_get_ascii(req, "arg0");
529 mediasize = g_get_mediasize(prov);
530 secsize = g_get_sectorsize(prov);
531 if (mediasize == 0 || secsize == 0) {
532 gctl_error(req, "Cannot get informations about %s: %s.", prov,
537 bzero(&md, sizeof(md));
538 strlcpy(md.md_magic, G_ELI_MAGIC, sizeof(md.md_magic));
539 md.md_version = G_ELI_VERSION;
541 if (gctl_get_int(req, "boot"))
542 md.md_flags |= G_ELI_FLAG_BOOT;
543 md.md_ealgo = CRYPTO_ALGORITHM_MIN - 1;
544 str = gctl_get_ascii(req, "aalgo");
545 if (strcmp(str, "none") != 0) {
546 md.md_aalgo = g_eli_str2aalgo(str);
547 if (md.md_aalgo >= CRYPTO_ALGORITHM_MIN &&
548 md.md_aalgo <= CRYPTO_ALGORITHM_MAX) {
549 md.md_flags |= G_ELI_FLAG_AUTH;
552 * For backward compatibility, check if the -a option
553 * was used to provide encryption algorithm.
555 md.md_ealgo = g_eli_str2ealgo(str);
556 if (md.md_ealgo < CRYPTO_ALGORITHM_MIN ||
557 md.md_ealgo > CRYPTO_ALGORITHM_MAX) {
559 "Invalid authentication algorithm.");
562 fprintf(stderr, "warning: The -e option, not "
563 "the -a option is now used to specify "
564 "encryption algorithm to use.\n");
568 if (md.md_ealgo < CRYPTO_ALGORITHM_MIN ||
569 md.md_ealgo > CRYPTO_ALGORITHM_MAX) {
570 str = gctl_get_ascii(req, "ealgo");
571 md.md_ealgo = g_eli_str2ealgo(str);
572 if (md.md_ealgo < CRYPTO_ALGORITHM_MIN ||
573 md.md_ealgo > CRYPTO_ALGORITHM_MAX) {
574 gctl_error(req, "Invalid encryption algorithm.");
578 val = gctl_get_intmax(req, "keylen");
580 md.md_keylen = g_eli_keylen(md.md_ealgo, md.md_keylen);
581 if (md.md_keylen == 0) {
582 gctl_error(req, "Invalid key length.");
585 md.md_provsize = mediasize;
587 val = gctl_get_intmax(req, "iterations");
592 * Don't allow to set iterations when there will be no
595 nonewpassphrase = gctl_get_int(req, "nonewpassphrase");
596 if (nonewpassphrase) {
598 "Options -i and -P are mutually exclusive.");
602 md.md_iterations = val;
604 val = gctl_get_intmax(req, "sectorsize");
606 md.md_sectorsize = secsize;
608 if (val < 0 || (val % secsize) != 0) {
609 gctl_error(req, "Invalid sector size.");
612 if (val > sysconf(_SC_PAGE_SIZE)) {
613 gctl_error(req, "warning: Using sectorsize bigger than "
616 md.md_sectorsize = val;
620 arc4rand(md.md_salt, sizeof(md.md_salt));
621 arc4rand(md.md_mkeys, sizeof(md.md_mkeys));
623 /* Generate user key. */
624 if (eli_genkey(req, &md, key, 1) == NULL) {
625 bzero(key, sizeof(key));
626 bzero(&md, sizeof(md));
630 /* Encrypt the first and the only Master Key. */
631 error = g_eli_mkey_encrypt(md.md_ealgo, key, md.md_keylen, md.md_mkeys);
632 bzero(key, sizeof(key));
634 bzero(&md, sizeof(md));
635 gctl_error(req, "Cannot encrypt Master Key: %s.",
640 eli_metadata_encode(&md, sector);
641 bzero(&md, sizeof(md));
642 error = g_metadata_store(prov, sector, sizeof(sector));
643 bzero(sector, sizeof(sector));
645 gctl_error(req, "Cannot store metadata on %s: %s.", prov,
650 printf("Metadata value stored on %s.\n", prov);
654 eli_attach(struct gctl_req *req)
656 struct g_eli_metadata md;
657 unsigned char key[G_ELI_USERKEYLEN];
661 nargs = gctl_get_int(req, "nargs");
663 gctl_error(req, "Invalid number of arguments.");
666 prov = gctl_get_ascii(req, "arg0");
668 if (eli_metadata_read(req, prov, &md) == -1)
671 if (eli_genkey(req, &md, key, 0) == NULL) {
672 bzero(key, sizeof(key));
676 gctl_ro_param(req, "key", sizeof(key), key);
677 if (gctl_issue(req) == NULL) {
679 printf("Attached to %s.\n", prov);
681 bzero(key, sizeof(key));
685 eli_configure_detached(struct gctl_req *req, const char *prov, int boot)
687 struct g_eli_metadata md;
689 if (eli_metadata_read(req, prov, &md) == -1)
692 if (boot && (md.md_flags & G_ELI_FLAG_BOOT)) {
694 printf("BOOT flag already configured for %s.\n", prov);
695 } else if (!boot && !(md.md_flags & G_ELI_FLAG_BOOT)) {
697 printf("BOOT flag not configured for %s.\n", prov);
700 md.md_flags |= G_ELI_FLAG_BOOT;
702 md.md_flags &= ~G_ELI_FLAG_BOOT;
703 eli_metadata_store(req, prov, &md);
705 bzero(&md, sizeof(md));
709 eli_configure(struct gctl_req *req)
712 int i, nargs, boot, noboot;
714 nargs = gctl_get_int(req, "nargs");
716 gctl_error(req, "Too few arguments.");
720 boot = gctl_get_int(req, "boot");
721 noboot = gctl_get_int(req, "noboot");
723 if (boot && noboot) {
724 gctl_error(req, "Options -b and -B are mutually exclusive.");
727 if (!boot && !noboot) {
728 gctl_error(req, "No option given.");
732 /* First attached providers. */
735 for (i = 0; i < nargs; i++) {
736 prov = gctl_get_ascii(req, "arg%d", i);
737 if (!eli_is_attached(prov))
738 eli_configure_detached(req, prov, boot);
743 eli_setkey_attached(struct gctl_req *req, struct g_eli_metadata *md)
745 unsigned char key[G_ELI_USERKEYLEN];
746 intmax_t val, old = 0;
749 val = gctl_get_intmax(req, "iterations");
750 /* Check if iterations number should be changed. */
752 md->md_iterations = val;
754 old = md->md_iterations;
756 /* Generate key for Master Key encryption. */
757 if (eli_genkey(req, md, key, 1) == NULL) {
758 bzero(key, sizeof(key));
762 * If number of iterations has changed, but wasn't given as a
763 * command-line argument, update the request.
765 if (val == -1 && md->md_iterations != old) {
766 error = gctl_change_param(req, "iterations", sizeof(intmax_t),
771 gctl_ro_param(req, "key", sizeof(key), key);
773 bzero(key, sizeof(key));
777 eli_setkey_detached(struct gctl_req *req, const char *prov,
778 struct g_eli_metadata *md)
780 unsigned char key[G_ELI_USERKEYLEN], mkey[G_ELI_DATAIVKEYLEN];
781 unsigned char *mkeydst;
786 if (md->md_keys == 0) {
787 gctl_error(req, "No valid keys on %s.", prov);
791 /* Generate key for Master Key decryption. */
792 if (eli_genkey(req, md, key, 0) == NULL) {
793 bzero(key, sizeof(key));
797 /* Decrypt Master Key. */
798 error = g_eli_mkey_decrypt(md, key, mkey, &nkey);
799 bzero(key, sizeof(key));
801 bzero(md, sizeof(*md));
803 gctl_error(req, "Wrong key for %s.", prov);
804 else /* if (error > 0) */ {
805 gctl_error(req, "Cannot decrypt Master Key: %s.",
811 printf("Decrypted Master Key %u.\n", nkey);
813 val = gctl_get_intmax(req, "keyno");
818 ; /* Use the key number which was found during decryption. */
820 if (nkey >= G_ELI_MAXMKEYS) {
821 gctl_error(req, "Invalid '%s' argument.", "keyno");
825 val = gctl_get_intmax(req, "iterations");
826 /* Check if iterations number should and can be changed. */
828 if (bitcount32(md->md_keys) != 1) {
829 gctl_error(req, "To be able to use '-i' option, only "
830 "one key can be defined.");
833 if (md->md_keys != (1 << nkey)) {
834 gctl_error(req, "Only already defined key can be "
835 "changed when '-i' option is used.");
838 md->md_iterations = val;
841 mkeydst = md->md_mkeys + nkey * G_ELI_MKEYLEN;
842 md->md_keys |= (1 << nkey);
844 bcopy(mkey, mkeydst, sizeof(mkey));
845 bzero(mkey, sizeof(mkey));
847 /* Generate key for Master Key encryption. */
848 if (eli_genkey(req, md, key, 1) == NULL) {
849 bzero(key, sizeof(key));
850 bzero(md, sizeof(*md));
854 /* Encrypt the Master-Key with the new key. */
855 error = g_eli_mkey_encrypt(md->md_ealgo, key, md->md_keylen, mkeydst);
856 bzero(key, sizeof(key));
858 bzero(md, sizeof(*md));
859 gctl_error(req, "Cannot encrypt Master Key: %s.",
864 /* Store metadata with fresh key. */
865 eli_metadata_store(req, prov, md);
866 bzero(md, sizeof(*md));
870 eli_setkey(struct gctl_req *req)
872 struct g_eli_metadata md;
876 nargs = gctl_get_int(req, "nargs");
878 gctl_error(req, "Invalid number of arguments.");
881 prov = gctl_get_ascii(req, "arg0");
883 if (eli_metadata_read(req, prov, &md) == -1)
886 if (eli_is_attached(prov))
887 eli_setkey_attached(req, &md);
889 eli_setkey_detached(req, prov, &md);
893 eli_delkey_attached(struct gctl_req *req, const char *prov __unused)
900 eli_delkey_detached(struct gctl_req *req, const char *prov)
902 struct g_eli_metadata md;
903 unsigned char *mkeydst;
908 if (eli_metadata_read(req, prov, &md) == -1)
911 all = gctl_get_int(req, "all");
913 arc4rand(md.md_mkeys, sizeof(md.md_mkeys));
915 force = gctl_get_int(req, "force");
916 val = gctl_get_intmax(req, "keyno");
918 gctl_error(req, "Key number has to be specified.");
922 if (nkey >= G_ELI_MAXMKEYS) {
923 gctl_error(req, "Invalid '%s' argument.", "keyno");
926 if (!(md.md_keys & (1 << nkey)) && !force) {
927 gctl_error(req, "Master Key %u is not set.", nkey);
930 md.md_keys &= ~(1 << nkey);
931 if (md.md_keys == 0 && !force) {
932 gctl_error(req, "This is the last Master Key. Use '-f' "
933 "option if you really want to remove it.");
936 mkeydst = md.md_mkeys + nkey * G_ELI_MKEYLEN;
937 arc4rand(mkeydst, G_ELI_MKEYLEN);
940 eli_metadata_store(req, prov, &md);
941 bzero(&md, sizeof(md));
945 eli_delkey(struct gctl_req *req)
950 nargs = gctl_get_int(req, "nargs");
952 gctl_error(req, "Invalid number of arguments.");
955 prov = gctl_get_ascii(req, "arg0");
957 if (eli_is_attached(prov))
958 eli_delkey_attached(req, prov);
960 eli_delkey_detached(req, prov);
964 eli_kill_detached(struct gctl_req *req, const char *prov)
966 struct g_eli_metadata md;
970 * NOTE: Maybe we should verify if this is geli provider first,
971 * but 'kill' command is quite critical so better don't waste
975 error = g_metadata_read(prov, (unsigned char *)&md, sizeof(md),
978 gctl_error(req, "Cannot read metadata from %s: %s.", prov,
984 arc4rand((unsigned char *)&md, sizeof(md));
985 error = g_metadata_store(prov, (unsigned char *)&md, sizeof(md));
987 gctl_error(req, "Cannot write metadata to %s: %s.", prov,
993 eli_kill(struct gctl_req *req)
998 nargs = gctl_get_int(req, "nargs");
999 all = gctl_get_int(req, "all");
1000 if (!all && nargs == 0) {
1001 gctl_error(req, "Too few arguments.");
1005 * How '-a' option combine with a list of providers:
1006 * Delete Master Keys from all attached providers:
1008 * Delete Master Keys from all attached providers and from
1009 * detached da0 and da1:
1010 * geli kill -a da0 da1
1011 * Delete Master Keys from (attached or detached) da0 and da1:
1015 /* First detached providers. */
1016 for (i = 0; i < nargs; i++) {
1017 prov = gctl_get_ascii(req, "arg%d", i);
1018 if (!eli_is_attached(prov))
1019 eli_kill_detached(req, prov);
1021 /* Now attached providers. */
1026 eli_backup(struct gctl_req *req)
1028 struct g_eli_metadata md;
1029 const char *file, *prov;
1031 unsigned char *sector;
1033 int nargs, filefd, provfd;
1035 nargs = gctl_get_int(req, "nargs");
1037 gctl_error(req, "Invalid number of arguments.");
1040 prov = gctl_get_ascii(req, "arg0");
1041 file = gctl_get_ascii(req, "arg1");
1043 provfd = filefd = -1;
1047 provfd = open(prov, O_RDONLY);
1048 if (provfd == -1 && errno == ENOENT && prov[0] != '/') {
1049 char devprov[MAXPATHLEN];
1051 snprintf(devprov, sizeof(devprov), "%s%s", _PATH_DEV, prov);
1052 provfd = open(devprov, O_RDONLY);
1055 gctl_error(req, "Cannot open %s: %s.", prov, strerror(errno));
1058 filefd = open(file, O_WRONLY | O_TRUNC | O_CREAT, 0600);
1060 gctl_error(req, "Cannot open %s: %s.", file, strerror(errno));
1064 mediasize = g_get_mediasize(prov);
1065 secsize = g_get_sectorsize(prov);
1066 if (mediasize == 0 || secsize == 0) {
1067 gctl_error(req, "Cannot get informations about %s: %s.", prov,
1072 sector = malloc(secsize);
1073 if (sector == NULL) {
1074 gctl_error(req, "Cannot allocate memory.");
1078 /* Read metadata from the provider. */
1079 if (pread(provfd, sector, secsize, mediasize - secsize) !=
1081 gctl_error(req, "Cannot read metadata: %s.", strerror(errno));
1084 /* Check if this is geli provider. */
1085 if (eli_metadata_decode(sector, &md) != 0) {
1086 gctl_error(req, "MD5 hash mismatch: not a geli provider?");
1089 /* Write metadata to the destination file. */
1090 if (write(filefd, sector, secsize) != (ssize_t)secsize) {
1091 gctl_error(req, "Cannot write to %s: %s.", file,
1100 if (sector != NULL) {
1101 bzero(sector, secsize);
1107 eli_restore(struct gctl_req *req)
1109 struct g_eli_metadata md;
1110 const char *file, *prov;
1111 unsigned char *sector;
1114 int nargs, filefd, provfd;
1116 nargs = gctl_get_int(req, "nargs");
1118 gctl_error(req, "Invalid number of arguments.");
1121 file = gctl_get_ascii(req, "arg0");
1122 prov = gctl_get_ascii(req, "arg1");
1124 provfd = filefd = -1;
1128 filefd = open(file, O_RDONLY);
1130 gctl_error(req, "Cannot open %s: %s.", file, strerror(errno));
1133 provfd = open(prov, O_WRONLY);
1134 if (provfd == -1 && errno == ENOENT && prov[0] != '/') {
1135 char devprov[MAXPATHLEN];
1137 snprintf(devprov, sizeof(devprov), "%s%s", _PATH_DEV, prov);
1138 provfd = open(devprov, O_WRONLY);
1141 gctl_error(req, "Cannot open %s: %s.", prov, strerror(errno));
1145 mediasize = g_get_mediasize(prov);
1146 secsize = g_get_sectorsize(prov);
1147 if (mediasize == 0 || secsize == 0) {
1148 gctl_error(req, "Cannot get informations about %s: %s.", prov,
1153 sector = malloc(secsize);
1154 if (sector == NULL) {
1155 gctl_error(req, "Cannot allocate memory.");
1159 /* Read metadata from the backup file. */
1160 if (read(filefd, sector, secsize) != (ssize_t)secsize) {
1161 gctl_error(req, "Cannot read from %s: %s.", file,
1165 /* Check if this file contains geli metadata. */
1166 if (eli_metadata_decode(sector, &md) != 0) {
1167 gctl_error(req, "MD5 hash mismatch: not a geli backup file?");
1170 /* Write metadata from the provider. */
1171 if (pwrite(provfd, sector, secsize, mediasize - secsize) !=
1173 gctl_error(req, "Cannot write metadata: %s.", strerror(errno));
1181 if (sector != NULL) {
1182 bzero(sector, secsize);
1188 eli_clear(struct gctl_req *req)
1191 int error, i, nargs;
1193 nargs = gctl_get_int(req, "nargs");
1195 gctl_error(req, "Too few arguments.");
1199 for (i = 0; i < nargs; i++) {
1200 name = gctl_get_ascii(req, "arg%d", i);
1201 error = g_metadata_clear(name, G_ELI_MAGIC);
1203 fprintf(stderr, "Cannot clear metadata on %s: %s.\n",
1204 name, strerror(error));
1205 gctl_error(req, "Not fully done.");
1209 printf("Metadata cleared on %s.\n", name);
1214 eli_dump(struct gctl_req *req)
1216 struct g_eli_metadata md, tmpmd;
1218 int error, i, nargs;
1220 nargs = gctl_get_int(req, "nargs");
1222 gctl_error(req, "Too few arguments.");
1226 for (i = 0; i < nargs; i++) {
1227 name = gctl_get_ascii(req, "arg%d", i);
1228 error = g_metadata_read(name, (unsigned char *)&tmpmd,
1229 sizeof(tmpmd), G_ELI_MAGIC);
1231 fprintf(stderr, "Cannot read metadata from %s: %s.\n",
1232 name, strerror(error));
1233 gctl_error(req, "Not fully done.");
1236 if (eli_metadata_decode((unsigned char *)&tmpmd, &md) != 0) {
1237 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n",
1239 gctl_error(req, "Not fully done.");
1242 printf("Metadata on %s:\n", name);
1243 eli_metadata_dump(&md);