/*
* veritysetup - setup cryptographic volumes for dm-verity
*
- * Copyright (C) 2012-2013, Red Hat, Inc. All rights reserved.
- * Copyright (C) 2012-2013, Milan Broz
+ * Copyright (C) 2012-2020 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2012-2020 Milan Broz
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
static int use_superblock = 1;
+static const char *fec_device = NULL;
+static int fec_roots = DEFAULT_VERITY_FEC_ROOTS;
static const char *hash_algorithm = NULL;
static int hash_type = 1;
static int data_block_size = DEFAULT_VERITY_DATA_BLOCK;
static uint64_t data_blocks = 0;
static const char *salt_string = NULL;
static uint64_t hash_offset = 0;
+static uint64_t fec_offset = 0;
static const char *opt_uuid = NULL;
-
-static int opt_version_mode = 0;
+static int opt_restart_on_corruption = 0;
+static int opt_ignore_corruption = 0;
+static int opt_ignore_zero_blocks = 0;
+static int opt_check_at_most_once = 0;
+static const char *opt_root_hash_signature = NULL;
static const char **action_argv;
static int action_argc;
params->hash_name = hash_algorithm ?: DEFAULT_VERITY_HASH;
params->data_device = data_device;
+ params->fec_device = fec_device;
+ params->fec_roots = fec_roots;
if (salt_string && !strcmp(salt_string, "-")) {
params->salt_size = 0;
} else if (salt_string) {
len = crypt_hex_to_bytes(salt_string, &salt, 0);
if (len < 0) {
- log_err(_("Invalid salt string specified.\n"));
+ log_err(_("Invalid salt string specified."));
return -EINVAL;
}
params->salt_size = len;
params->hash_block_size = hash_block_size;
params->data_size = data_blocks;
params->hash_area_offset = hash_offset;
+ params->fec_area_offset = fec_offset;
params->hash_type = hash_type;
params->flags = flags;
/* Try to create hash image if doesn't exist */
r = open(action_argv[1], O_WRONLY | O_EXCL | O_CREAT, S_IRUSR | S_IWUSR);
if (r < 0 && errno != EEXIST) {
- log_err(_("Cannot create hash image %s for writing.\n"), action_argv[1]);
+ log_err(_("Cannot create hash image %s for writing."), action_argv[1]);
return -EINVAL;
} else if (r >= 0) {
log_dbg("Created hash image %s.", action_argv[1]);
close(r);
}
+ /* Try to create FEC image if doesn't exist */
+ if (fec_device) {
+ r = open(fec_device, O_WRONLY | O_EXCL | O_CREAT, S_IRUSR | S_IWUSR);
+ if (r < 0 && errno != EEXIST) {
+ log_err(_("Cannot create FEC image %s for writing."), fec_device);
+ return -EINVAL;
+ } else if (r >= 0) {
+ log_dbg("Created FEC image %s.", fec_device);
+ close(r);
+ }
+ }
if ((r = crypt_init(&cd, action_argv[1])))
goto out;
uint32_t activate_flags = CRYPT_ACTIVATE_READONLY;
char *root_hash_bytes = NULL;
ssize_t hash_size;
- int r;
+ struct stat st;
+ char *signature = NULL;
+ int signature_size = 0, r;
- if ((r = crypt_init(&cd, hash_device)))
+ if ((r = crypt_init_data_device(&cd, hash_device, data_device)))
goto out;
+ if (opt_ignore_corruption)
+ activate_flags |= CRYPT_ACTIVATE_IGNORE_CORRUPTION;
+ if (opt_restart_on_corruption)
+ activate_flags |= CRYPT_ACTIVATE_RESTART_ON_CORRUPTION;
+ if (opt_ignore_zero_blocks)
+ activate_flags |= CRYPT_ACTIVATE_IGNORE_ZERO_BLOCKS;
+ if (opt_check_at_most_once)
+ activate_flags |= CRYPT_ACTIVATE_CHECK_AT_MOST_ONCE;
+
if (use_superblock) {
params.flags = flags;
params.hash_area_offset = hash_offset;
+ params.fec_area_offset = fec_offset;
+ params.fec_device = fec_device;
+ params.fec_roots = fec_roots;
r = crypt_load(cd, CRYPT_VERITY, ¶ms);
} else {
r = _prepare_format(¶ms, data_device, flags | CRYPT_VERITY_NO_HEADER);
}
if (r < 0)
goto out;
- r = crypt_set_data_device(cd, data_device);
- if (r < 0)
- goto out;
hash_size = crypt_get_volume_key_size(cd);
if (crypt_hex_to_bytes(root_hash, &root_hash_bytes, 0) != hash_size) {
- log_err(_("Invalid root hash string specified.\n"));
+ log_err(_("Invalid root hash string specified."));
r = -EINVAL;
goto out;
}
- r = crypt_activate_by_volume_key(cd, dm_device,
+
+ if (opt_root_hash_signature) {
+ // FIXME: check max file size
+ if (stat(opt_root_hash_signature, &st) || !S_ISREG(st.st_mode) || !st.st_size) {
+ log_err(_("Invalid signature file %s."), opt_root_hash_signature);
+ r = -EINVAL;
+ goto out;
+ }
+ signature_size = st.st_size;
+ r = tools_read_mk(opt_root_hash_signature, &signature, signature_size);
+ if (r < 0) {
+ log_err(_("Cannot read signature file %s."), opt_root_hash_signature);
+ goto out;
+ }
+ }
+ r = crypt_activate_by_signed_key(cd, dm_device,
root_hash_bytes,
hash_size,
+ signature, signature_size,
activate_flags);
out:
+ crypt_safe_free(signature);
crypt_free(cd);
free(root_hash_bytes);
free(CONST_CAST(char*)params.salt);
return r;
}
-static int action_create(int arg)
+static int action_open(int arg)
{
- return _activate(action_argv[0],
- action_argv[1],
+ return _activate(action_argv[1],
+ action_argv[0],
action_argv[2],
- action_argv[3], 0);
+ action_argv[3],
+ opt_root_hash_signature ? CRYPT_VERITY_ROOT_HASH_SIGNATURE : 0);
}
static int action_verify(int arg)
CRYPT_VERITY_CHECK_HASH);
}
-static int action_remove(int arg)
+static int action_close(int arg)
{
struct crypt_device *cd = NULL;
int r;
struct crypt_params_verity vp = {};
struct crypt_device *cd = NULL;
struct stat st;
- char *backing_file;
+ char *backing_file, *root_hash;
+ size_t root_hash_size;
unsigned i, path = 0;
int r = 0;
ci == CRYPT_BUSY ? " and is in use" : "");
r = crypt_init_by_name_and_header(&cd, action_argv[0], NULL);
- if (r < 0 || !crypt_get_type(cd))
+ if (r < 0)
goto out;
- log_std(" type: %s\n", crypt_get_type(cd));
+ log_std(" type: %s\n", crypt_get_type(cd) ?: "n/a");
r = crypt_get_active_device(cd, action_argv[0], &cad);
if (r < 0)
goto out;
- log_std(" status: %s\n",
- cad.flags & CRYPT_ACTIVATE_CORRUPTED ? "corrupted" : "verified");
-
+ /* Print only VERITY type devices */
r = crypt_get_verity_info(cd, &vp);
if (r < 0)
goto out;
+ log_std(" status: %s%s\n",
+ cad.flags & CRYPT_ACTIVATE_CORRUPTED ? "corrupted" : "verified",
+ vp.flags & CRYPT_VERITY_ROOT_HASH_SIGNATURE ? " (with signature)" : "");
+
log_std(" hash type: %u\n", vp.hash_type);
log_std(" data block: %u\n", vp.data_block_size);
log_std(" hash block: %u\n", vp.hash_block_size);
log_std("\n");
log_std(" data device: %s\n", vp.data_device);
- if (crypt_loop_device(vp.data_device)) {
- backing_file = crypt_loop_backing_file(vp.data_device);
+ if ((backing_file = crypt_loop_backing_file(vp.data_device))) {
log_std(" data loop: %s\n", backing_file);
free(backing_file);
}
"readonly" : "read/write");
log_std(" hash device: %s\n", vp.hash_device);
- if (crypt_loop_device(vp.hash_device)) {
- backing_file = crypt_loop_backing_file(vp.hash_device);
+ if ((backing_file = crypt_loop_backing_file(vp.hash_device))) {
log_std(" hash loop: %s\n", backing_file);
free(backing_file);
}
log_std(" hash offset: %" PRIu64 " sectors\n",
vp.hash_area_offset * vp.hash_block_size / 512);
+
+ if (vp.fec_device) {
+ log_std(" FEC device: %s\n", vp.fec_device);
+ if ((backing_file = crypt_loop_backing_file(vp.fec_device))) {
+ log_std(" FEC loop: %s\n", backing_file);
+ free(backing_file);
+ }
+ log_std(" FEC offset: %" PRIu64 " sectors\n",
+ vp.fec_area_offset * vp.hash_block_size / 512);
+ log_std(" FEC roots: %u\n", vp.fec_roots);
+ }
+
+ root_hash_size = crypt_get_volume_key_size(cd);
+ if (root_hash_size > 0 && (root_hash = malloc(root_hash_size))) {
+ r = crypt_volume_key_get(cd, CRYPT_ANY_SLOT, root_hash, &root_hash_size, NULL, 0);
+ if (!r) {
+ log_std(" root hash: ");
+ for (i = 0; i < root_hash_size; i++)
+ log_std("%02hhx", (const char)root_hash[i]);
+ log_std("\n");
+ }
+ free(root_hash);
+ }
+
+ if (cad.flags & (CRYPT_ACTIVATE_IGNORE_CORRUPTION|
+ CRYPT_ACTIVATE_RESTART_ON_CORRUPTION|
+ CRYPT_ACTIVATE_IGNORE_ZERO_BLOCKS|
+ CRYPT_ACTIVATE_CHECK_AT_MOST_ONCE))
+ log_std(" flags: %s%s%s%s\n",
+ (cad.flags & CRYPT_ACTIVATE_IGNORE_CORRUPTION) ? "ignore_corruption " : "",
+ (cad.flags & CRYPT_ACTIVATE_RESTART_ON_CORRUPTION) ? "restart_on_corruption " : "",
+ (cad.flags & CRYPT_ACTIVATE_IGNORE_ZERO_BLOCKS) ? "ignore_zero_blocks " : "",
+ (cad.flags & CRYPT_ACTIVATE_CHECK_AT_MOST_ONCE) ? "check_at_most_once" : "");
}
out:
crypt_free(cd);
return r;
params.hash_area_offset = hash_offset;
+ params.fec_area_offset = fec_offset;
r = crypt_load(cd, CRYPT_VERITY, ¶ms);
if (!r)
crypt_dump(cd);
} action_types[] = {
{ "format", action_format, 2, N_("<data_device> <hash_device>"),N_("format device") },
{ "verify", action_verify, 3, N_("<data_device> <hash_device> <root_hash>"),N_("verify device") },
- { "create", action_create, 4, N_("<name> <data_device> <hash_device> <root_hash>"),N_("create active device") },
- { "remove", action_remove, 1, N_("<name>"),N_("remove (deactivate) device") },
+ { "open", action_open, 4, N_("<data_device> <name> <hash_device> <root_hash>"),N_("open device as <name>") },
+ { "close", action_close, 1, N_("<name>"),N_("close device (remove mapping)") },
{ "status", action_status, 1, N_("<name>"),N_("show active device status") },
{ "dump", action_dump, 1, N_("<hash_device>"),N_("show on-disk information") },
{ NULL, NULL, 0, NULL, NULL }
DEFAULT_VERITY_HASH, DEFAULT_VERITY_DATA_BLOCK,
DEFAULT_VERITY_HASH_BLOCK, DEFAULT_VERITY_SALT_SIZE,
1);
+ poptFreeContext(popt_context);
+ exit(EXIT_SUCCESS);
+ } else if (key->shortName == 'V') {
+ log_std("%s %s\n", PACKAGE_VERITY, PACKAGE_VERSION);
+ poptFreeContext(popt_context);
exit(EXIT_SUCCESS);
} else
usage(popt_context, EXIT_SUCCESS, NULL, NULL);
{ NULL, '\0', POPT_ARG_CALLBACK, help, 0, NULL, NULL },
{ "help", '?', POPT_ARG_NONE, NULL, 0, N_("Show this help message"), NULL },
{ "usage", '\0', POPT_ARG_NONE, NULL, 0, N_("Display brief usage"), NULL },
+ { "version",'V', POPT_ARG_NONE, NULL, 0, N_("Print package version"), NULL },
POPT_TABLEEND
};
static struct poptOption popt_options[] = {
{ NULL, '\0', POPT_ARG_INCLUDE_TABLE, popt_help_options, 0, N_("Help options:"), NULL },
- { "version", '\0', POPT_ARG_NONE, &opt_version_mode, 0, N_("Print package version"), NULL },
{ "verbose", 'v', POPT_ARG_NONE, &opt_verbose, 0, N_("Shows more detailed error messages"), NULL },
{ "debug", '\0', POPT_ARG_NONE, &opt_debug, 0, N_("Show debug messages"), NULL },
{ "no-superblock", 0, POPT_ARG_VAL, &use_superblock, 0, N_("Do not use verity superblock"), NULL },
{ "format", 0, POPT_ARG_INT, &hash_type, 0, N_("Format type (1 - normal, 0 - original Chrome OS)"), N_("number") },
{ "data-block-size", 0, POPT_ARG_INT, &data_block_size, 0, N_("Block size on the data device"), N_("bytes") },
{ "hash-block-size", 0, POPT_ARG_INT, &hash_block_size, 0, N_("Block size on the hash device"), N_("bytes") },
+ { "fec-roots", 0, POPT_ARG_INT, &fec_roots, 0, N_("FEC parity bytes"), N_("bytes") },
{ "data-blocks", 0, POPT_ARG_STRING, &popt_tmp, 1, N_("The number of blocks in the data file"), N_("blocks") },
+ { "fec-device", 0, POPT_ARG_STRING, &fec_device, 0, N_("Path to device with error correction data"), N_("path") },
{ "hash-offset", 0, POPT_ARG_STRING, &popt_tmp, 2, N_("Starting offset on the hash device"), N_("bytes") },
+ { "fec-offset", 0, POPT_ARG_STRING, &popt_tmp, 3, N_("Starting offset on the FEC device"), N_("bytes") },
{ "hash", 'h', POPT_ARG_STRING, &hash_algorithm, 0, N_("Hash algorithm"), N_("string") },
{ "salt", 's', POPT_ARG_STRING, &salt_string, 0, N_("Salt"), N_("hex string") },
- { "uuid", '\0', POPT_ARG_STRING, &opt_uuid, 0, N_("UUID for device to use."), NULL },
+ { "uuid", '\0', POPT_ARG_STRING, &opt_uuid, 0, N_("UUID for device to use"), NULL },
+ { "root-hash-signature",'\0', POPT_ARG_STRING, &opt_root_hash_signature, 0, N_("Path to root hash signature file"), NULL },
+ { "restart-on-corruption", 0,POPT_ARG_NONE,&opt_restart_on_corruption, 0, N_("Restart kernel if corruption is detected"), NULL },
+ { "ignore-corruption", 0, POPT_ARG_NONE, &opt_ignore_corruption, 0, N_("Ignore corruption, log it only"), NULL },
+ { "ignore-zero-blocks", 0, POPT_ARG_NONE, &opt_ignore_zero_blocks, 0, N_("Do not verify zeroed blocks"), NULL },
+ { "check-at-most-once", 0, POPT_ARG_NONE, &opt_check_at_most_once, 0, N_("Verify data block only the first time it is read"), NULL },
POPT_TABLEEND
};
case 2:
hash_offset = ull_value;
break;
+ case 3:
+ fec_offset = ull_value;
+ break;
}
if (r < 0)
usage(popt_context, EXIT_FAILURE, poptStrerror(r),
poptBadOption(popt_context, POPT_BADOPTION_NOALIAS));
- if (opt_version_mode) {
- log_std("%s %s\n", PACKAGE_VERITY, PACKAGE_VERSION);
- poptFreeContext(popt_context);
- exit(EXIT_SUCCESS);
- }
-
if (!(aname = poptGetArg(popt_context)))
usage(popt_context, EXIT_FAILURE, _("Argument <action> missing."),
poptGetInvocationName(popt_context));
- for(action = action_types; action->type; action++)
- if (strcmp(action->type, aname) == 0)
- break;
- if (!action->type)
- usage(popt_context, EXIT_FAILURE, _("Unknown action."),
- poptGetInvocationName(popt_context));
action_argc = 0;
action_argv = poptGetArgs(popt_context);
while(action_argv[action_argc] != NULL)
action_argc++;
- if(action_argc < action->required_action_argc) {
+ /* Handle aliases */
+ if (!strcmp(aname, "create") && action_argc > 1) {
+ /* create command had historically switched arguments */
+ if (action_argv[0] && action_argv[1]) {
+ const char *tmp = action_argv[0];
+ action_argv[0] = action_argv[1];
+ action_argv[1] = tmp;
+ }
+ aname = "open";
+ } else if (!strcmp(aname, "remove")) {
+ aname = "close";
+ }
+
+ for (action = action_types; action->type; action++)
+ if (strcmp(action->type, aname) == 0)
+ break;
+
+ if (!action->type)
+ usage(popt_context, EXIT_FAILURE, _("Unknown action."),
+ poptGetInvocationName(popt_context));
+
+ if (action_argc < action->required_action_argc) {
char buf[128];
snprintf(buf, 128,_("%s: requires %s as arguments"), action->type, action->arg_desc);
usage(popt_context, EXIT_FAILURE, buf,
poptGetInvocationName(popt_context));
}
+ if ((opt_ignore_corruption || opt_restart_on_corruption || opt_ignore_zero_blocks) && strcmp(aname, "open"))
+ usage(popt_context, EXIT_FAILURE,
+ _("Option --ignore-corruption, --restart-on-corruption or --ignore-zero-blocks is allowed only for open operation."),
+ poptGetInvocationName(popt_context));
+
+ if (opt_root_hash_signature && strcmp(aname, "open"))
+ usage(popt_context, EXIT_FAILURE,
+ _("Option --root-hash-signature can be used only for open operation."),
+ poptGetInvocationName(popt_context));
+
+ if (opt_ignore_corruption && opt_restart_on_corruption)
+ usage(popt_context, EXIT_FAILURE,
+ _("Option --ignore-corruption and --restart-on-corruption cannot be used together."),
+ poptGetInvocationName(popt_context));
+
if (opt_debug) {
opt_verbose = 1;
crypt_set_debug_level(-1);
projects / platform / upstream / cryptsetup.git / blobdiff