/*
* veritysetup - setup cryptographic volumes for dm-verity
*
- * Copyright (C) 2012, Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2012-2021 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2012-2021 Milan Broz
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-/* TODO:
- * - init_by_name()
- * - support device without superblock
- * - audit alloc errors / error path
- * - change command names (cryptsetup style)
- * - extend superblock (UUID)
- * - configure.in/config.h defaults
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <errno.h>
-#include <string.h>
-#include <popt.h>
-
#include "cryptsetup.h"
#define PACKAGE_VERITY "veritysetup"
-#define MODE_VERIFY 0
-#define MODE_CREATE 1
-#define MODE_ACTIVATE 2
-#define MODE_DUMP 3
-
-static int mode = -1;
-static int use_superblock = 1; /* FIXME: no superblock not supported */
-
-static const char *dm_device = NULL;
-static const char *data_device = NULL;
-static const char *hash_device = NULL;
-static const char *hash_algorithm = NULL;
-static const char *root_hash = NULL;
-
-static int version = 1;
-static int data_block_size = 4096;
-static int hash_block_size = 4096;
-static char *data_blocks_string = NULL;
+static char *opt_fec_device = NULL;
+static char *opt_hash_algorithm = NULL;
+static char *opt_salt = NULL;
+static char *opt_uuid = NULL;
+static char *opt_root_hash_signature = NULL;
+
+static int opt_use_superblock = 1;
+static int opt_fec_roots = DEFAULT_VERITY_FEC_ROOTS;
+static int opt_hash_type = 1;
+static int opt_data_block_size = DEFAULT_VERITY_DATA_BLOCK;
+static int opt_hash_block_size = DEFAULT_VERITY_HASH_BLOCK;
static uint64_t data_blocks = 0;
-static char *hash_start_string = NULL;
-static const char *salt_string = NULL;
-static unsigned salt_size = 32;
-static uint64_t hash_start = 0;
-
-static int opt_verbose = 0;
-static int opt_debug = 0;
-static int opt_version_mode = 0;
-
-static int hex_to_bytes(const char *hex, char *result)
+static uint64_t hash_offset = 0;
+static uint64_t fec_offset = 0;
+static int opt_restart_on_corruption = 0;
+static int opt_panic_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 **action_argv;
+static int action_argc;
+
+void tools_cleanup(void)
{
- char buf[3] = "xx\0", *endp;
- int i, len;
-
- len = strlen(hex) / 2;
- for (i = 0; i < len; i++) {
- memcpy(buf, &hex[i * 2], 2);
- result[i] = strtoul(buf, &endp, 16);
- if (endp != &buf[2])
- return -EINVAL;
- }
- return i;
+ FREE_AND_NULL(opt_fec_device);
+ FREE_AND_NULL(opt_hash_algorithm);
+ FREE_AND_NULL(opt_salt);
+ FREE_AND_NULL(opt_uuid);
+ FREE_AND_NULL(opt_root_hash_signature);
}
-__attribute__((format(printf, 5, 6)))
-static void clogger(struct crypt_device *cd, int level, const char *file,
- int line, const char *format, ...)
+static int _prepare_format(struct crypt_params_verity *params,
+ const char *data_device,
+ uint32_t flags)
{
- va_list argp;
- char *target = NULL;
-
- va_start(argp, format);
-
- if (vasprintf(&target, format, argp) > 0) {
- if (level >= 0) {
- crypt_log(cd, level, target);
-#ifdef CRYPT_DEBUG
- } else if (opt_debug)
- printf("# %s:%d %s\n", file ?: "?", line, target);
-#else
- } else if (opt_debug)
- printf("# %s\n", target);
-#endif
+ char *salt = NULL;
+ int len;
+
+ params->hash_name = opt_hash_algorithm ?: DEFAULT_VERITY_HASH;
+ params->data_device = data_device;
+ params->fec_device = opt_fec_device;
+ params->fec_roots = opt_fec_roots;
+
+ if (opt_salt && !strcmp(opt_salt, "-")) {
+ params->salt_size = 0;
+ params->salt = NULL;
+ } else if (opt_salt) {
+ len = crypt_hex_to_bytes(opt_salt, &salt, 0);
+ if (len < 0) {
+ log_err(_("Invalid salt string specified."));
+ return -EINVAL;
+ }
+ params->salt_size = len;
+ params->salt = salt;
+ } else {
+ params->salt_size = DEFAULT_VERITY_SALT_SIZE;
+ params->salt = NULL;
}
- va_end(argp);
- free(target);
-}
-
-static void _log(int level, const char *msg, void *usrptr __attribute__((unused)))
-{
- switch(level) {
+ params->data_block_size = opt_data_block_size;
+ params->hash_block_size = opt_hash_block_size;
+ params->data_size = data_blocks;
+ params->hash_area_offset = hash_offset;
+ params->fec_area_offset = fec_offset;
+ params->hash_type = opt_hash_type;
+ params->flags = flags;
- case CRYPT_LOG_NORMAL:
- fputs(msg, stdout);
- break;
- case CRYPT_LOG_VERBOSE:
- if (opt_verbose)
- fputs(msg, stdout);
- break;
- case CRYPT_LOG_ERROR:
- fputs(msg, stderr);
- break;
- case CRYPT_LOG_DEBUG:
- if (opt_debug)
- printf("# %s\n", msg);
- break;
- default:
- fprintf(stderr, "Internal error on logging class for msg: %s", msg);
- break;
- }
+ return 0;
}
-static int action_dump(void)
+static int action_format(int arg)
{
struct crypt_device *cd = NULL;
struct crypt_params_verity params = {};
+ uint32_t flags = CRYPT_VERITY_CREATE_HASH;
int r;
- if ((r = crypt_init(&cd, hash_device)))
- return r;
+ /* 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."), 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 (opt_fec_device) {
+ r = open(opt_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."), opt_fec_device);
+ return -EINVAL;
+ } else if (r >= 0) {
+ log_dbg("Created FEC image %s.", opt_fec_device);
+ close(r);
+ }
+ }
- params.hash_area_offset = hash_start;
- r = crypt_load(cd, CRYPT_VERITY, ¶ms);
+ if ((r = crypt_init(&cd, action_argv[1])))
+ goto out;
+
+ if (!opt_use_superblock)
+ flags |= CRYPT_VERITY_NO_HEADER;
+
+ r = _prepare_format(¶ms, action_argv[0], flags);
+ if (r < 0)
+ goto out;
+
+ r = crypt_format(cd, CRYPT_VERITY, NULL, NULL, opt_uuid, NULL, 0, ¶ms);
if (!r)
crypt_dump(cd);
+out:
crypt_free(cd);
+ free(CONST_CAST(char*)params.salt);
return r;
}
-static int action_activate(int verify)
+static int _activate(const char *dm_device,
+ const char *data_device,
+ const char *hash_device,
+ const char *root_hash,
+ uint32_t flags)
{
struct crypt_device *cd = NULL;
struct crypt_params_verity params = {};
uint32_t activate_flags = CRYPT_ACTIVATE_READONLY;
- char root_hash_bytes[128];
- int r;
+ char *root_hash_bytes = NULL;
+ ssize_t hash_size;
+ 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 (verify)
- params.flags |= CRYPT_VERITY_CHECK_HASH;
-
- if (use_superblock) {
- params.hash_area_offset = hash_start;
- r = crypt_load(cd, CRYPT_VERITY, ¶ms);
- } else {/*
- params.hash_name = hash_algorithm;
- params.salt = salt_bytes;
- params.salt_size = salt_size;
- params.data_block_size = data_block_size;
- params.hash_block_size = hash_block_size;
-
- params.data_size = data_blocks * data_block_size / 512;
- params.version = version;
- params.flags |= CRYPT_VERITY_NO_HEADER;
+ if (opt_ignore_corruption)
+ activate_flags |= CRYPT_ACTIVATE_IGNORE_CORRUPTION;
+ if (opt_restart_on_corruption)
+ activate_flags |= CRYPT_ACTIVATE_RESTART_ON_CORRUPTION;
+ if (opt_panic_on_corruption)
+ activate_flags |= CRYPT_ACTIVATE_PANIC_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 (opt_use_superblock) {
+ params.flags = flags;
+ params.hash_area_offset = hash_offset;
+ params.fec_area_offset = fec_offset;
+ params.fec_device = opt_fec_device;
+ params.fec_roots = opt_fec_roots;
r = crypt_load(cd, CRYPT_VERITY, ¶ms);
- crypt_format(); */
- r = -EINVAL;
- goto out;
+ } else {
+ r = _prepare_format(¶ms, data_device, flags | CRYPT_VERITY_NO_HEADER);
+ if (r < 0)
+ goto out;
+ r = crypt_format(cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, ¶ms);
}
if (r < 0)
goto out;
- r = crypt_set_data_device(cd, data_device);
- if (r < 0)
- goto out;
- if (hex_to_bytes(root_hash, root_hash_bytes) !=
- crypt_get_volume_key_size(cd)) {
+ 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."));
r = -EINVAL;
goto out;
}
- r = crypt_activate_by_volume_key(cd, dm_device, root_hash_bytes,
- crypt_get_volume_key_size(cd),
+
+ 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:
- if (!r)
- crypt_dump(cd);
+ crypt_safe_free(signature);
crypt_free(cd);
+ free(root_hash_bytes);
+ free(CONST_CAST(char*)params.salt);
return r;
}
-static int action_create(void)
+static int action_open(int arg)
+{
+ return _activate(action_argv[1],
+ action_argv[0],
+ action_argv[2],
+ action_argv[3],
+ opt_root_hash_signature ? CRYPT_VERITY_ROOT_HASH_SIGNATURE : 0);
+}
+
+static int action_verify(int arg)
+{
+ return _activate(NULL,
+ action_argv[0],
+ action_argv[1],
+ action_argv[2],
+ CRYPT_VERITY_CHECK_HASH);
+}
+
+static int action_close(int arg)
{
struct crypt_device *cd = NULL;
- struct crypt_params_verity params = {};
- char salt_bytes[512];
int r;
- if ((r = crypt_init(&cd, hash_device)))
- goto out;
+ r = crypt_init_by_name(&cd, action_argv[0]);
+ if (r == 0)
+ r = crypt_deactivate(cd, action_argv[0]);
- params.hash_name = hash_algorithm ?: "sha256";
- params.data_device = data_device;
+ crypt_free(cd);
+ return r;
+}
- if (salt_string) {
- if (hex_to_bytes(salt_string, salt_bytes) != salt_size) {
- r = -EINVAL;
+static int action_status(int arg)
+{
+ crypt_status_info ci;
+ struct crypt_active_device cad;
+ struct crypt_params_verity vp = {};
+ struct crypt_device *cd = NULL;
+ struct stat st;
+ char *backing_file, *root_hash;
+ size_t root_hash_size;
+ unsigned i, path = 0;
+ int r = 0;
+
+ /* perhaps a path, not a dm device name */
+ if (strchr(action_argv[0], '/') && !stat(action_argv[0], &st))
+ path = 1;
+
+ ci = crypt_status(NULL, action_argv[0]);
+ switch (ci) {
+ case CRYPT_INVALID:
+ r = -EINVAL;
+ break;
+ case CRYPT_INACTIVE:
+ if (path)
+ log_std("%s is inactive.\n", action_argv[0]);
+ else
+ log_std("%s/%s is inactive.\n", crypt_get_dir(), action_argv[0]);
+ r = -ENODEV;
+ break;
+ case CRYPT_ACTIVE:
+ case CRYPT_BUSY:
+ if (path)
+ log_std("%s is active%s.\n", action_argv[0],
+ ci == CRYPT_BUSY ? " and is in use" : "");
+ else
+ log_std("%s/%s is active%s.\n", crypt_get_dir(), action_argv[0],
+ ci == CRYPT_BUSY ? " and is in use" : "");
+
+ r = crypt_init_by_name_and_header(&cd, action_argv[0], NULL);
+ if (r < 0)
+ goto out;
+
+ 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;
+
+ /* 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(" hash name: %s\n", vp.hash_name);
+ log_std(" salt: ");
+ if (vp.salt_size)
+ for(i = 0; i < vp.salt_size; i++)
+ log_std("%02hhx", (const char)vp.salt[i]);
+ else
+ log_std("-");
+ log_std("\n");
+
+ log_std(" data device: %s\n", vp.data_device);
+ if ((backing_file = crypt_loop_backing_file(vp.data_device))) {
+ log_std(" data loop: %s\n", backing_file);
+ free(backing_file);
+ }
+ log_std(" size: %" PRIu64 " sectors\n", cad.size);
+ log_std(" mode: %s\n", cad.flags & CRYPT_ACTIVATE_READONLY ?
+ "readonly" : "read/write");
+
+ log_std(" hash device: %s\n", 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(opt_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);
}
- params.salt = salt_bytes;
- }
- params.salt_size = salt_size;
- params.data_block_size = data_block_size;
- params.hash_block_size = hash_block_size;
- params.data_size = data_blocks;
- params.hash_area_offset = hash_start;
- params.version = version;
- params.flags = CRYPT_VERITY_CREATE_HASH;
- if (!use_superblock)
- params.flags |= CRYPT_VERITY_NO_HEADER;
-
- r = crypt_format(cd, CRYPT_VERITY, NULL, NULL, NULL, NULL, 0, ¶ms);
- if (!r)
- crypt_dump(cd);
+ 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_PANIC_ON_CORRUPTION|
+ CRYPT_ACTIVATE_IGNORE_ZERO_BLOCKS|
+ CRYPT_ACTIVATE_CHECK_AT_MOST_ONCE))
+ log_std(" flags: %s%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_PANIC_ON_CORRUPTION) ? "panic_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);
+ if (r == -ENOTSUP)
+ r = 0;
return r;
}
-static __attribute__ ((noreturn)) void usage(poptContext popt_context,
- int exitcode, const char *error,
- const char *more)
+static int action_dump(int arg)
{
- poptPrintUsage(popt_context, stderr, 0);
- if (error)
- log_err("%s: %s\n", more, error);
- poptFreeContext(popt_context);
- exit(exitcode);
+ struct crypt_device *cd = NULL;
+ struct crypt_params_verity params = {};
+ int r;
+
+ if ((r = crypt_init(&cd, action_argv[0])))
+ 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);
+ crypt_free(cd);
+ return r;
}
+static struct action_type {
+ const char *type;
+ int (*handler)(int);
+ int required_action_argc;
+ const char *arg_desc;
+ const char *desc;
+} 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") },
+ { "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 }
+};
+
static void help(poptContext popt_context,
enum poptCallbackReason reason __attribute__((unused)),
struct poptOption *key,
const char *arg __attribute__((unused)),
void *data __attribute__((unused)))
{
+ struct action_type *action;
+
if (key->shortName == '?') {
log_std("%s %s\n", PACKAGE_VERITY, PACKAGE_VERSION);
poptPrintHelp(popt_context, stdout, 0);
+ log_std(_("\n"
+ "<action> is one of:\n"));
+ for(action = action_types; action->type; action++)
+ log_std("\t%s %s - %s\n", action->type, _(action->arg_desc), _(action->desc));
+ log_std(_("\n"
+ "<name> is the device to create under %s\n"
+ "<data_device> is the data device\n"
+ "<hash_device> is the device containing verification data\n"
+ "<root_hash> hash of the root node on <hash_device>\n"),
+ crypt_get_dir());
+
+ log_std(_("\nDefault compiled-in dm-verity parameters:\n"
+ "\tHash: %s, Data block (bytes): %u, "
+ "Hash block (bytes): %u, Salt size: %u, Hash format: %u\n"),
+ DEFAULT_VERITY_HASH, DEFAULT_VERITY_DATA_BLOCK,
+ DEFAULT_VERITY_HASH_BLOCK, DEFAULT_VERITY_SALT_SIZE,
+ 1);
+ tools_cleanup();
+ poptFreeContext(popt_context);
+ exit(EXIT_SUCCESS);
+ } else if (key->shortName == 'V') {
+ log_std("%s %s\n", PACKAGE_VERITY, PACKAGE_VERSION);
+ tools_cleanup();
+ poptFreeContext(popt_context);
exit(EXIT_SUCCESS);
} else
usage(popt_context, EXIT_SUCCESS, NULL, NULL);
}
-static void _dbg_version_and_cmd(int argc, const char **argv)
+static int run_action(struct action_type *action)
{
- int i;
+ int r;
- log_std("# %s %s processing \"", PACKAGE_VERITY, PACKAGE_VERSION);
- for (i = 0; i < argc; i++) {
- if (i)
- log_std(" ");
- log_std("%s", argv[i]);
- }
- log_std("\"\n");
+ log_dbg("Running command %s.", action->type);
+
+ r = action->handler(0);
+
+ show_status(r);
+ return translate_errno(r);
}
int main(int argc, const char **argv)
{
+ static const char *null_action_argv[] = {NULL};
static struct poptOption popt_help_options[] = {
{ 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", 0 /*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 },
- { "create", 'c', POPT_ARG_VAL, &mode, MODE_CREATE, "Create hash", NULL },
- { "verify", 'v', POPT_ARG_VAL, &mode, MODE_VERIFY, "Verify integrity", NULL },
- { "activate", 'a', POPT_ARG_VAL, &mode, MODE_ACTIVATE, "Activate the device", NULL },
- { "dump", 'd', POPT_ARG_VAL, &mode, MODE_DUMP, "Dump the device", NULL },
- { "no-superblock", 0, POPT_ARG_VAL, &use_superblock, 0, "Do not create/use superblock" },
- { "format", 0, POPT_ARG_INT, &version, 0, "Format version (1 - normal format, 0 - original Chromium OS format)", "number" },
- { "data-block-size", 0, POPT_ARG_INT, &data_block_size, 0, "Block size on the data device", "bytes" },
- { "hash-block-size", 0, POPT_ARG_INT, &hash_block_size, 0, "Block size on the hash device", "bytes" },
- { "data-blocks", 0, POPT_ARG_STRING, &data_blocks_string, 0, "The number of blocks in the data file", "blocks" },
- { "hash-start", 0, POPT_ARG_STRING, &hash_start_string, 0, "Starting block on the hash device", "512-byte sectors" },
- { "algorithm", 0, POPT_ARG_STRING, &hash_algorithm, 0, "Hash algorithm (default sha256)", "string" },
- { "salt", 0, POPT_ARG_STRING, &salt_string, 0, "Salt", "hex string" },
+ { NULL, '\0', POPT_ARG_INCLUDE_TABLE, popt_help_options, 0, N_("Help options:"), 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, &opt_use_superblock, 0, N_("Do not use verity superblock"), NULL },
+ { "format", 0, POPT_ARG_INT, &opt_hash_type, 0, N_("Format type (1 - normal, 0 - original Chrome OS)"), N_("number") },
+ { "data-block-size", 0, POPT_ARG_INT, &opt_data_block_size, 0, N_("Block size on the data device"), N_("bytes") },
+ { "hash-block-size", 0, POPT_ARG_INT, &opt_hash_block_size, 0, N_("Block size on the hash device"), N_("bytes") },
+ { "fec-roots", 0, POPT_ARG_INT, &opt_fec_roots, 0, N_("FEC parity bytes"), N_("bytes") },
+ { "data-blocks", 0, POPT_ARG_STRING, NULL, 1, N_("The number of blocks in the data file"), N_("blocks") },
+ { "fec-device", 0, POPT_ARG_STRING, &opt_fec_device, 0, N_("Path to device with error correction data"), N_("path") },
+ { "hash-offset", 0, POPT_ARG_STRING, NULL, 2, N_("Starting offset on the hash device"), N_("bytes") },
+ { "fec-offset", 0, POPT_ARG_STRING, NULL, 3, N_("Starting offset on the FEC device"), N_("bytes") },
+ { "hash", 'h', POPT_ARG_STRING, &opt_hash_algorithm, 0, N_("Hash algorithm"), N_("string") },
+ { "salt", 's', POPT_ARG_STRING, &opt_salt, 0, N_("Salt"), N_("hex string") },
+ { "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 },
+ { "panic-on-corruption", 0,POPT_ARG_NONE, &opt_panic_on_corruption, 0, N_("Panic 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
};
+
poptContext popt_context;
+ struct action_type *action;
+ const char *aname;
int r;
- char *end;
- crypt_set_log_callback(NULL, _log, NULL);
+ crypt_set_log_callback(NULL, tool_log, NULL);
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
popt_context = poptGetContext("verity", argc, argv, popt_options, 0);
+ poptSetOtherOptionHelp(popt_context,
+ _("[OPTION...] <action> <action-specific>"));
+
+ while((r = poptGetNextOpt(popt_context)) > 0) {
+ unsigned long long ull_value;
+ char *endp, *str = poptGetOptArg(popt_context);
+
+ errno = 0;
+ ull_value = strtoull(str, &endp, 10);
+ if (*endp || !*str || !isdigit(*str) ||
+ (errno == ERANGE && ull_value == ULLONG_MAX) ||
+ (errno != 0 && ull_value == 0))
+ r = POPT_ERROR_BADNUMBER;
+
+ free(str);
+
+ switch(r) {
+ case 1:
+ data_blocks = ull_value;
+ break;
+ case 2:
+ hash_offset = ull_value;
+ break;
+ case 3:
+ fec_offset = ull_value;
+ break;
+ }
- poptSetOtherOptionHelp(popt_context, "[-c|-v|-a|-d] [<device name> if activating] <data device> <hash device> [<root hash> if activating or verifying] [OPTION...]");
-
- if (argc <= 1) {
- poptPrintHelp(popt_context, stdout, 0);
- exit(1);
+ if (r < 0)
+ break;
}
- r = poptGetNextOpt(popt_context);
if (r < -1)
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 (mode < 0)
- usage(popt_context, EXIT_FAILURE, _("Unknown action."),
+ if (!(aname = poptGetArg(popt_context)))
+ usage(popt_context, EXIT_FAILURE, _("Argument <action> missing."),
poptGetInvocationName(popt_context));
- if (mode == MODE_ACTIVATE) {
- dm_device = poptGetArg(popt_context);
- if (!dm_device || !*dm_device)
- usage(popt_context, EXIT_FAILURE,
- _("Missing activation device name."),
- poptGetInvocationName(popt_context));
+ action_argc = 0;
+ action_argv = poptGetArgs(popt_context);
+ /* Make return values of poptGetArgs more consistent in case of remaining argc = 0 */
+ if(!action_argv)
+ action_argv = null_action_argv;
+
+ /* Count args, somewhat unnice, change? */
+ while(action_argv[action_argc] != NULL)
+ 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";
}
- data_device = poptGetArg(popt_context);
- if (!data_device)
- usage(popt_context, EXIT_FAILURE, _("Missing data device name."),
- poptGetInvocationName(popt_context));
+ for (action = action_types; action->type; action++)
+ if (strcmp(action->type, aname) == 0)
+ break;
- hash_device = poptGetArg(popt_context);
- if (!hash_device)
- usage(popt_context, EXIT_FAILURE, _("Missing hash device name."),
+ if (!action->type)
+ usage(popt_context, EXIT_FAILURE, _("Unknown action."),
poptGetInvocationName(popt_context));
- if (mode == MODE_ACTIVATE || mode == MODE_VERIFY) {
- root_hash = poptGetArg(popt_context);
- if (!root_hash)
- usage(popt_context, EXIT_FAILURE, _("Root hash not specified."),
+ 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 (data_blocks_string) {
- data_blocks = strtoll(data_blocks_string, &end, 10);
- if (!*data_blocks_string || *end)
- usage(popt_context, EXIT_FAILURE,
- _("Invalid number of data blocks."),
- poptGetInvocationName(popt_context));
+ if (opt_data_block_size < 0 || opt_hash_block_size < 0 || opt_hash_type < 0) {
+ usage(popt_context, EXIT_FAILURE,
+ _("Negative number for option not permitted."),
+ poptGetInvocationName(popt_context));
}
- /* hash start */
- if (hash_start_string) {
- hash_start = strtoll(hash_start_string, &end, 10);
- if (!*hash_start_string || *end)
- usage(popt_context, EXIT_FAILURE,
- _("Invalid hash device offset."),
- poptGetInvocationName(popt_context));
- hash_start *= 512;
- }
+ 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 (salt_string || !use_superblock) {
- if (!salt_string || !strcmp(salt_string, "-"))
- salt_string = "";
- salt_size = strlen(salt_string) / 2;
- }
+ 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_panic_on_corruption && opt_restart_on_corruption)
+ usage(popt_context, EXIT_FAILURE,
+ _("Option --panic-on-corruption and --restart-on-corruption cannot be used together."),
+ poptGetInvocationName(popt_context));
if (opt_debug) {
opt_verbose = 1;
crypt_set_debug_level(-1);
- _dbg_version_and_cmd(argc, argv);
- }
-
- switch (mode) {
- case MODE_ACTIVATE:
- r = action_activate(0);
- break;
- case MODE_VERIFY:
- r = action_activate(1);
- break;
- case MODE_CREATE:
- r = action_create();
- break;
- case MODE_DUMP:
- r = action_dump();
- break;
+ dbg_version_and_cmd(argc, argv);
}
+ r = run_action(action);
+ tools_cleanup();
poptFreeContext(popt_context);
return r;
}
projects / platform / upstream / cryptsetup.git / blobdiff