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-rw-r--r--src/cryptsetup/cryptsetup.c745
1 files changed, 745 insertions, 0 deletions
diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c
new file mode 100644
index 0000000..9cb52dd
--- /dev/null
+++ b/src/cryptsetup/cryptsetup.c
@@ -0,0 +1,745 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <errno.h>
+#include <mntent.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include "sd-device.h"
+
+#include "alloc-util.h"
+#include "ask-password-api.h"
+#include "crypt-util.h"
+#include "device-util.h"
+#include "escape.h"
+#include "fileio.h"
+#include "log.h"
+#include "main-func.h"
+#include "mount-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "pretty-print.h"
+#include "util.h"
+
+/* internal helper */
+#define ANY_LUKS "LUKS"
+/* as in src/cryptsetup.h */
+#define CRYPT_SECTOR_SIZE 512
+#define CRYPT_MAX_SECTOR_SIZE 4096
+
+static const char *arg_type = NULL; /* ANY_LUKS, CRYPT_LUKS1, CRYPT_LUKS2, CRYPT_TCRYPT or CRYPT_PLAIN */
+static char *arg_cipher = NULL;
+static unsigned arg_key_size = 0;
+#if HAVE_LIBCRYPTSETUP_SECTOR_SIZE
+static unsigned arg_sector_size = CRYPT_SECTOR_SIZE;
+#endif
+static int arg_key_slot = CRYPT_ANY_SLOT;
+static unsigned arg_keyfile_size = 0;
+static uint64_t arg_keyfile_offset = 0;
+static char *arg_hash = NULL;
+static char *arg_header = NULL;
+static unsigned arg_tries = 3;
+static bool arg_readonly = false;
+static bool arg_verify = false;
+static bool arg_discards = false;
+static bool arg_tcrypt_hidden = false;
+static bool arg_tcrypt_system = false;
+#ifdef CRYPT_TCRYPT_VERA_MODES
+static bool arg_tcrypt_veracrypt = false;
+#endif
+static char **arg_tcrypt_keyfiles = NULL;
+static uint64_t arg_offset = 0;
+static uint64_t arg_skip = 0;
+static usec_t arg_timeout = USEC_INFINITY;
+
+STATIC_DESTRUCTOR_REGISTER(arg_cipher, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_hash, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_header, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_tcrypt_keyfiles, strv_freep);
+
+/* Options Debian's crypttab knows we don't:
+
+ precheck=
+ check=
+ checkargs=
+ noearly=
+ loud=
+ keyscript=
+*/
+
+static int parse_one_option(const char *option) {
+ const char *val;
+ int r;
+
+ assert(option);
+
+ /* Handled outside of this tool */
+ if (STR_IN_SET(option, "noauto", "auto", "nofail", "fail", "_netdev"))
+ return 0;
+
+ if ((val = startswith(option, "cipher="))) {
+ r = free_and_strdup(&arg_cipher, val);
+ if (r < 0)
+ return log_oom();
+
+ } else if ((val = startswith(option, "size="))) {
+
+ r = safe_atou(val, &arg_key_size);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse %s, ignoring: %m", option);
+ return 0;
+ }
+
+ if (arg_key_size % 8) {
+ log_error("size= not a multiple of 8, ignoring.");
+ return 0;
+ }
+
+ arg_key_size /= 8;
+
+ } else if ((val = startswith(option, "sector-size="))) {
+
+#if HAVE_LIBCRYPTSETUP_SECTOR_SIZE
+ r = safe_atou(val, &arg_sector_size);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse %s, ignoring: %m", option);
+ return 0;
+ }
+
+ if (arg_sector_size % 2) {
+ log_error("sector-size= not a multiple of 2, ignoring.");
+ return 0;
+ }
+
+ if (arg_sector_size < CRYPT_SECTOR_SIZE || arg_sector_size > CRYPT_MAX_SECTOR_SIZE) {
+ log_error("sector-size= is outside of %u and %u, ignoring.", CRYPT_SECTOR_SIZE, CRYPT_MAX_SECTOR_SIZE);
+ return 0;
+ }
+#else
+ log_error("sector-size= is not supported, compiled with old libcryptsetup.");
+ return 0;
+#endif
+
+ } else if ((val = startswith(option, "key-slot="))) {
+
+ arg_type = ANY_LUKS;
+ r = safe_atoi(val, &arg_key_slot);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse %s, ignoring: %m", option);
+ return 0;
+ }
+
+ } else if ((val = startswith(option, "tcrypt-keyfile="))) {
+
+ arg_type = CRYPT_TCRYPT;
+ if (path_is_absolute(val)) {
+ if (strv_extend(&arg_tcrypt_keyfiles, val) < 0)
+ return log_oom();
+ } else
+ log_error("Key file path \"%s\" is not absolute. Ignoring.", val);
+
+ } else if ((val = startswith(option, "keyfile-size="))) {
+
+ r = safe_atou(val, &arg_keyfile_size);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse %s, ignoring: %m", option);
+ return 0;
+ }
+
+ } else if ((val = startswith(option, "keyfile-offset="))) {
+ uint64_t off;
+
+ r = safe_atou64(val, &off);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse %s, ignoring: %m", option);
+ return 0;
+ }
+
+ if ((size_t) off != off) {
+ /* https://gitlab.com/cryptsetup/cryptsetup/issues/359 */
+ log_error("keyfile-offset= value would truncated to %zu, ignoring.", (size_t) off);
+ return 0;
+ }
+
+ arg_keyfile_offset = off;
+
+ } else if ((val = startswith(option, "hash="))) {
+ r = free_and_strdup(&arg_hash, val);
+ if (r < 0)
+ return log_oom();
+
+ } else if ((val = startswith(option, "header="))) {
+ arg_type = ANY_LUKS;
+
+ if (!path_is_absolute(val))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Header path \"%s\" is not absolute, refusing.", val);
+
+ if (arg_header)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Duplicate header= option, refusing.");
+
+ arg_header = strdup(val);
+ if (!arg_header)
+ return log_oom();
+
+ } else if ((val = startswith(option, "tries="))) {
+
+ r = safe_atou(val, &arg_tries);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse %s, ignoring: %m", option);
+ return 0;
+ }
+
+ } else if (STR_IN_SET(option, "readonly", "read-only"))
+ arg_readonly = true;
+ else if (streq(option, "verify"))
+ arg_verify = true;
+ else if (STR_IN_SET(option, "allow-discards", "discard"))
+ arg_discards = true;
+ else if (streq(option, "luks"))
+ arg_type = ANY_LUKS;
+ else if (streq(option, "tcrypt"))
+ arg_type = CRYPT_TCRYPT;
+ else if (streq(option, "tcrypt-hidden")) {
+ arg_type = CRYPT_TCRYPT;
+ arg_tcrypt_hidden = true;
+ } else if (streq(option, "tcrypt-system")) {
+ arg_type = CRYPT_TCRYPT;
+ arg_tcrypt_system = true;
+ } else if (streq(option, "tcrypt-veracrypt")) {
+#ifdef CRYPT_TCRYPT_VERA_MODES
+ arg_type = CRYPT_TCRYPT;
+ arg_tcrypt_veracrypt = true;
+#else
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "This version of cryptsetup does not support tcrypt-veracrypt; refusing.");
+#endif
+ } else if (STR_IN_SET(option, "plain", "swap", "tmp"))
+ arg_type = CRYPT_PLAIN;
+ else if ((val = startswith(option, "timeout="))) {
+
+ r = parse_sec_fix_0(val, &arg_timeout);
+ if (r < 0) {
+ log_error_errno(r, "Failed to parse %s, ignoring: %m", option);
+ return 0;
+ }
+
+ } else if ((val = startswith(option, "offset="))) {
+
+ r = safe_atou64(val, &arg_offset);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse %s: %m", option);
+
+ } else if ((val = startswith(option, "skip="))) {
+
+ r = safe_atou64(val, &arg_skip);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse %s: %m", option);
+
+ } else if (!streq(option, "none"))
+ log_warning("Encountered unknown /etc/crypttab option '%s', ignoring.", option);
+
+ return 0;
+}
+
+static int parse_options(const char *options) {
+ const char *word, *state;
+ size_t l;
+ int r;
+
+ assert(options);
+
+ FOREACH_WORD_SEPARATOR(word, l, options, ",", state) {
+ _cleanup_free_ char *o;
+
+ o = strndup(word, l);
+ if (!o)
+ return -ENOMEM;
+ r = parse_one_option(o);
+ if (r < 0)
+ return r;
+ }
+
+ /* sanity-check options */
+ if (arg_type != NULL && !streq(arg_type, CRYPT_PLAIN)) {
+ if (arg_offset)
+ log_warning("offset= ignored with type %s", arg_type);
+ if (arg_skip)
+ log_warning("skip= ignored with type %s", arg_type);
+ }
+
+ return 0;
+}
+
+static char* disk_description(const char *path) {
+ static const char name_fields[] =
+ "ID_PART_ENTRY_NAME\0"
+ "DM_NAME\0"
+ "ID_MODEL_FROM_DATABASE\0"
+ "ID_MODEL\0";
+
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+ const char *i, *name;
+ struct stat st;
+
+ assert(path);
+
+ if (stat(path, &st) < 0)
+ return NULL;
+
+ if (!S_ISBLK(st.st_mode))
+ return NULL;
+
+ if (sd_device_new_from_devnum(&device, 'b', st.st_rdev) < 0)
+ return NULL;
+
+ NULSTR_FOREACH(i, name_fields)
+ if (sd_device_get_property_value(device, i, &name) >= 0 &&
+ !isempty(name))
+ return strdup(name);
+
+ return NULL;
+}
+
+static char *disk_mount_point(const char *label) {
+ _cleanup_free_ char *device = NULL;
+ _cleanup_endmntent_ FILE *f = NULL;
+ struct mntent *m;
+
+ /* Yeah, we don't support native systemd unit files here for now */
+
+ if (asprintf(&device, "/dev/mapper/%s", label) < 0)
+ return NULL;
+
+ f = setmntent("/etc/fstab", "re");
+ if (!f)
+ return NULL;
+
+ while ((m = getmntent(f)))
+ if (path_equal(m->mnt_fsname, device))
+ return strdup(m->mnt_dir);
+
+ return NULL;
+}
+
+static int get_password(const char *vol, const char *src, usec_t until, bool accept_cached, char ***ret) {
+ _cleanup_free_ char *description = NULL, *name_buffer = NULL, *mount_point = NULL, *text = NULL, *disk_path = NULL;
+ _cleanup_strv_free_erase_ char **passwords = NULL;
+ const char *name = NULL;
+ char **p, *id;
+ int r = 0;
+
+ assert(vol);
+ assert(src);
+ assert(ret);
+
+ description = disk_description(src);
+ mount_point = disk_mount_point(vol);
+
+ disk_path = cescape(src);
+ if (!disk_path)
+ return log_oom();
+
+ if (description && streq(vol, description))
+ /* If the description string is simply the
+ * volume name, then let's not show this
+ * twice */
+ description = mfree(description);
+
+ if (mount_point && description)
+ r = asprintf(&name_buffer, "%s (%s) on %s", description, vol, mount_point);
+ else if (mount_point)
+ r = asprintf(&name_buffer, "%s on %s", vol, mount_point);
+ else if (description)
+ r = asprintf(&name_buffer, "%s (%s)", description, vol);
+
+ if (r < 0)
+ return log_oom();
+
+ name = name_buffer ? name_buffer : vol;
+
+ if (asprintf(&text, "Please enter passphrase for disk %s:", name) < 0)
+ return log_oom();
+
+ id = strjoina("cryptsetup:", disk_path);
+
+ r = ask_password_auto(text, "drive-harddisk", id, "cryptsetup", until,
+ ASK_PASSWORD_PUSH_CACHE | (accept_cached*ASK_PASSWORD_ACCEPT_CACHED),
+ &passwords);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query password: %m");
+
+ if (arg_verify) {
+ _cleanup_strv_free_erase_ char **passwords2 = NULL;
+
+ assert(strv_length(passwords) == 1);
+
+ if (asprintf(&text, "Please enter passphrase for disk %s (verification):", name) < 0)
+ return log_oom();
+
+ id = strjoina("cryptsetup-verification:", disk_path);
+
+ r = ask_password_auto(text, "drive-harddisk", id, "cryptsetup", until, ASK_PASSWORD_PUSH_CACHE, &passwords2);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query verification password: %m");
+
+ assert(strv_length(passwords2) == 1);
+
+ if (!streq(passwords[0], passwords2[0])) {
+ log_warning("Passwords did not match, retrying.");
+ return -EAGAIN;
+ }
+ }
+
+ strv_uniq(passwords);
+
+ STRV_FOREACH(p, passwords) {
+ char *c;
+
+ if (strlen(*p)+1 >= arg_key_size)
+ continue;
+
+ /* Pad password if necessary */
+ c = new(char, arg_key_size);
+ if (!c)
+ return log_oom();
+
+ strncpy(c, *p, arg_key_size);
+ free_and_replace(*p, c);
+ }
+
+ *ret = TAKE_PTR(passwords);
+
+ return 0;
+}
+
+static int attach_tcrypt(
+ struct crypt_device *cd,
+ const char *name,
+ const char *key_file,
+ char **passwords,
+ uint32_t flags) {
+
+ int r = 0;
+ _cleanup_free_ char *passphrase = NULL;
+ struct crypt_params_tcrypt params = {
+ .flags = CRYPT_TCRYPT_LEGACY_MODES,
+ .keyfiles = (const char **)arg_tcrypt_keyfiles,
+ .keyfiles_count = strv_length(arg_tcrypt_keyfiles)
+ };
+
+ assert(cd);
+ assert(name);
+ assert(key_file || (passwords && passwords[0]));
+
+ if (arg_tcrypt_hidden)
+ params.flags |= CRYPT_TCRYPT_HIDDEN_HEADER;
+
+ if (arg_tcrypt_system)
+ params.flags |= CRYPT_TCRYPT_SYSTEM_HEADER;
+
+#ifdef CRYPT_TCRYPT_VERA_MODES
+ if (arg_tcrypt_veracrypt)
+ params.flags |= CRYPT_TCRYPT_VERA_MODES;
+#endif
+
+ if (key_file) {
+ r = read_one_line_file(key_file, &passphrase);
+ if (r < 0) {
+ log_error_errno(r, "Failed to read password file '%s': %m", key_file);
+ return -EAGAIN; /* log with the actual error, but return EAGAIN */
+ }
+
+ params.passphrase = passphrase;
+ } else
+ params.passphrase = passwords[0];
+ params.passphrase_size = strlen(params.passphrase);
+
+ r = crypt_load(cd, CRYPT_TCRYPT, &params);
+ if (r < 0) {
+ if (key_file && r == -EPERM) {
+ log_error_errno(r, "Failed to activate using password file '%s'. (Key data not correct?)", key_file);
+ return -EAGAIN; /* log the actual error, but return EAGAIN */
+ }
+
+ return log_error_errno(r, "Failed to load tcrypt superblock on device %s: %m", crypt_get_device_name(cd));
+ }
+
+ r = crypt_activate_by_volume_key(cd, name, NULL, 0, flags);
+ if (r < 0)
+ return log_error_errno(r, "Failed to activate tcrypt device %s: %m", crypt_get_device_name(cd));
+
+ return 0;
+}
+
+static int attach_luks_or_plain(struct crypt_device *cd,
+ const char *name,
+ const char *key_file,
+ const char *data_device,
+ char **passwords,
+ uint32_t flags) {
+ int r = 0;
+ bool pass_volume_key = false;
+
+ assert(cd);
+ assert(name);
+ assert(key_file || passwords);
+
+ if (!arg_type || STR_IN_SET(arg_type, ANY_LUKS, CRYPT_LUKS1)) {
+ r = crypt_load(cd, CRYPT_LUKS, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to load LUKS superblock on device %s: %m", crypt_get_device_name(cd));
+
+ if (data_device)
+ r = crypt_set_data_device(cd, data_device);
+ }
+
+ if ((!arg_type && r < 0) || streq_ptr(arg_type, CRYPT_PLAIN)) {
+ struct crypt_params_plain params = {
+ .offset = arg_offset,
+ .skip = arg_skip,
+#if HAVE_LIBCRYPTSETUP_SECTOR_SIZE
+ .sector_size = arg_sector_size,
+#endif
+ };
+ const char *cipher, *cipher_mode;
+ _cleanup_free_ char *truncated_cipher = NULL;
+
+ if (arg_hash) {
+ /* plain isn't a real hash type. it just means "use no hash" */
+ if (!streq(arg_hash, "plain"))
+ params.hash = arg_hash;
+ } else if (!key_file)
+ /* for CRYPT_PLAIN, the behaviour of cryptsetup
+ * package is to not hash when a key file is provided */
+ params.hash = "ripemd160";
+
+ if (arg_cipher) {
+ size_t l;
+
+ l = strcspn(arg_cipher, "-");
+ truncated_cipher = strndup(arg_cipher, l);
+ if (!truncated_cipher)
+ return log_oom();
+
+ cipher = truncated_cipher;
+ cipher_mode = arg_cipher[l] ? arg_cipher+l+1 : "plain";
+ } else {
+ cipher = "aes";
+ cipher_mode = "cbc-essiv:sha256";
+ }
+
+ /* for CRYPT_PLAIN limit reads from keyfile to key length, and ignore keyfile-size */
+ arg_keyfile_size = arg_key_size;
+
+ /* In contrast to what the name crypt_setup() might suggest this doesn't actually format
+ * anything, it just configures encryption parameters when used for plain mode. */
+ r = crypt_format(cd, CRYPT_PLAIN, cipher, cipher_mode, NULL, NULL, arg_keyfile_size, &params);
+
+ /* hash == NULL implies the user passed "plain" */
+ pass_volume_key = (params.hash == NULL);
+ }
+ if (r < 0)
+ return log_error_errno(r, "Loading of cryptographic parameters failed: %m");
+
+ log_info("Set cipher %s, mode %s, key size %i bits for device %s.",
+ crypt_get_cipher(cd),
+ crypt_get_cipher_mode(cd),
+ crypt_get_volume_key_size(cd)*8,
+ crypt_get_device_name(cd));
+
+ if (key_file) {
+ r = crypt_activate_by_keyfile_offset(cd, name, arg_key_slot, key_file, arg_keyfile_size, arg_keyfile_offset, flags);
+ if (r == -EPERM) {
+ log_error_errno(r, "Failed to activate with key file '%s'. (Key data incorrect?)", key_file);
+ return -EAGAIN; /* Log actual error, but return EAGAIN */
+ }
+ if (r < 0)
+ return log_error_errno(r, "Failed to activate with key file '%s': %m", key_file);
+ } else {
+ char **p;
+
+ r = -EINVAL;
+ STRV_FOREACH(p, passwords) {
+ if (pass_volume_key)
+ r = crypt_activate_by_volume_key(cd, name, *p, arg_key_size, flags);
+ else
+ r = crypt_activate_by_passphrase(cd, name, arg_key_slot, *p, strlen(*p), flags);
+ if (r >= 0)
+ break;
+ }
+ if (r == -EPERM) {
+ log_error_errno(r, "Failed to activate with specified passphrase. (Passphrase incorrect?)");
+ return -EAGAIN; /* log actual error, but return EAGAIN */
+ }
+ if (r < 0)
+ return log_error_errno(r, "Failed to activate with specified passphrase: %m");
+ }
+
+ return r;
+}
+
+static int help(void) {
+ _cleanup_free_ char *link = NULL;
+ int r;
+
+ r = terminal_urlify_man("systemd-cryptsetup@.service", "8", &link);
+ if (r < 0)
+ return log_oom();
+
+ printf("%s attach VOLUME SOURCEDEVICE [PASSWORD] [OPTIONS]\n"
+ "%s detach VOLUME\n\n"
+ "Attaches or detaches an encrypted block device.\n"
+ "\nSee the %s for details.\n"
+ , program_invocation_short_name
+ , program_invocation_short_name
+ , link
+ );
+
+ return 0;
+}
+
+static int run(int argc, char *argv[]) {
+ _cleanup_(crypt_freep) struct crypt_device *cd = NULL;
+ int r;
+
+ if (argc <= 1)
+ return help();
+
+ if (argc < 3) {
+ log_error("This program requires at least two arguments.");
+ return -EINVAL;
+ }
+
+ log_setup_service();
+
+ umask(0022);
+
+ if (streq(argv[1], "attach")) {
+ uint32_t flags = 0;
+ unsigned tries;
+ usec_t until;
+ crypt_status_info status;
+ const char *key_file = NULL;
+
+ /* Arguments: systemd-cryptsetup attach VOLUME SOURCE-DEVICE [PASSWORD] [OPTIONS] */
+
+ if (argc < 4)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "attach requires at least two arguments.");
+
+ if (argc >= 5 &&
+ argv[4][0] &&
+ !streq(argv[4], "-") &&
+ !streq(argv[4], "none")) {
+
+ if (!path_is_absolute(argv[4]))
+ log_warning("Password file path '%s' is not absolute. Ignoring.", argv[4]);
+ else
+ key_file = argv[4];
+ }
+
+ if (argc >= 6 && argv[5][0] && !streq(argv[5], "-")) {
+ r = parse_options(argv[5]);
+ if (r < 0)
+ return r;
+ }
+
+ /* A delicious drop of snake oil */
+ mlockall(MCL_FUTURE);
+
+ if (arg_header) {
+ log_debug("LUKS header: %s", arg_header);
+ r = crypt_init(&cd, arg_header);
+ } else
+ r = crypt_init(&cd, argv[3]);
+ if (r < 0)
+ return log_error_errno(r, "crypt_init() failed: %m");
+
+ crypt_set_log_callback(cd, cryptsetup_log_glue, NULL);
+
+ status = crypt_status(cd, argv[2]);
+ if (IN_SET(status, CRYPT_ACTIVE, CRYPT_BUSY)) {
+ log_info("Volume %s already active.", argv[2]);
+ return 0;
+ }
+
+ if (arg_readonly)
+ flags |= CRYPT_ACTIVATE_READONLY;
+
+ if (arg_discards)
+ flags |= CRYPT_ACTIVATE_ALLOW_DISCARDS;
+
+ if (arg_timeout == USEC_INFINITY)
+ until = 0;
+ else
+ until = now(CLOCK_MONOTONIC) + arg_timeout;
+
+ arg_key_size = (arg_key_size > 0 ? arg_key_size : (256 / 8));
+
+ if (key_file) {
+ struct stat st;
+
+ /* Ideally we'd do this on the open fd, but since this is just a
+ * warning it's OK to do this in two steps. */
+ if (stat(key_file, &st) >= 0 && S_ISREG(st.st_mode) && (st.st_mode & 0005))
+ log_warning("Key file %s is world-readable. This is not a good idea!", key_file);
+ }
+
+ for (tries = 0; arg_tries == 0 || tries < arg_tries; tries++) {
+ _cleanup_strv_free_erase_ char **passwords = NULL;
+
+ if (!key_file) {
+ r = get_password(argv[2], argv[3], until, tries == 0 && !arg_verify, &passwords);
+ if (r == -EAGAIN)
+ continue;
+ if (r < 0)
+ return r;
+ }
+
+ if (streq_ptr(arg_type, CRYPT_TCRYPT))
+ r = attach_tcrypt(cd, argv[2], key_file, passwords, flags);
+ else
+ r = attach_luks_or_plain(cd,
+ argv[2],
+ key_file,
+ arg_header ? argv[3] : NULL,
+ passwords,
+ flags);
+ if (r >= 0)
+ break;
+ if (r != -EAGAIN)
+ return r;
+
+ /* Passphrase not correct? Let's try again! */
+ key_file = NULL;
+ }
+
+ if (arg_tries != 0 && tries >= arg_tries)
+ return log_error_errno(SYNTHETIC_ERRNO(EPERM), "Too many attempts to activate; giving up.");
+
+ } else if (streq(argv[1], "detach")) {
+
+ r = crypt_init_by_name(&cd, argv[2]);
+ if (r == -ENODEV) {
+ log_info("Volume %s already inactive.", argv[2]);
+ return 0;
+ }
+ if (r < 0)
+ return log_error_errno(r, "crypt_init_by_name() failed: %m");
+
+ crypt_set_log_callback(cd, cryptsetup_log_glue, NULL);
+
+ r = crypt_deactivate(cd, argv[2]);
+ if (r < 0)
+ return log_error_errno(r, "Failed to deactivate: %m");
+
+ } else
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown verb %s.", argv[1]);
+
+ return 0;
+}
+
+DEFINE_MAIN_FUNCTION(run);