+/*
+ * libdevmapper - device-mapper backend for cryptsetup
+ *
+ * Copyright (C) 2004, Christophe Saout <christophe@saout.de>
+ * Copyright (C) 2004-2007, Clemens Fruhwirth <clemens@endorphin.org>
+ * Copyright (C) 2009-2012, Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2009-2012, Milan Broz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
#ifndef _UTILS_DM_H
#define _UTILS_DM_H
#include <inttypes.h>
struct crypt_device;
+struct volume_key;
+struct crypt_params_verity;
+struct device;
/* Device mapper backend - kernel support flags */
#define DM_KEY_WIPE_SUPPORTED (1 << 0) /* key wipe message */
#define DM_LMK_SUPPORTED (1 << 1) /* lmk mode */
#define DM_SECURE_SUPPORTED (1 << 2) /* wipe (secure) buffer flag */
#define DM_PLAIN64_SUPPORTED (1 << 3) /* plain64 IV */
+#define DM_DISCARDS_SUPPORTED (1 << 4) /* discards/TRIM option is supported */
+#define DM_VERITY_SUPPORTED (1 << 5) /* dm-verity target supported */
uint32_t dm_flags(void);
+#define DM_ACTIVE_DEVICE (1 << 0)
+#define DM_ACTIVE_UUID (1 << 1)
+
+#define DM_ACTIVE_CRYPT_CIPHER (1 << 2)
+#define DM_ACTIVE_CRYPT_KEYSIZE (1 << 3)
+#define DM_ACTIVE_CRYPT_KEY (1 << 4)
+
+#define DM_ACTIVE_VERITY_ROOT_HASH (1 << 5)
+#define DM_ACTIVE_VERITY_HASH_DEVICE (1 << 6)
+#define DM_ACTIVE_VERITY_PARAMS (1 << 7)
+
+struct crypt_dm_active_device {
+ enum { DM_CRYPT = 0, DM_VERITY } target;
+ uint64_t size; /* active device size */
+ uint32_t flags; /* activation flags */
+ const char *uuid;
+ struct device *data_device;
+ union {
+ struct {
+ const char *cipher;
+
+ /* Active key for device */
+ struct volume_key *vk;
+
+ /* struct crypt_active_device */
+ uint64_t offset; /* offset in sectors */
+ uint64_t iv_offset; /* IV initilisation sector */
+ } crypt;
+ struct {
+ struct device *hash_device;
+
+ const char *root_hash;
+ uint32_t root_hash_size;
+
+ uint64_t hash_offset; /* hash offset in blocks (not header) */
+ struct crypt_params_verity *vp;
+ } verity;
+ } u;
+};
+
+void dm_backend_init(void);
+void dm_backend_exit(void);
+
+int dm_remove_device(struct crypt_device *cd, const char *name,
+ int force, uint64_t size);
+int dm_status_device(struct crypt_device *cd, const char *name);
+int dm_status_suspended(struct crypt_device *cd, const char *name);
+int dm_status_verity_ok(struct crypt_device *cd, const char *name);
+int dm_query_device(struct crypt_device *cd, const char *name,
+ uint32_t get_flags, struct crypt_dm_active_device *dmd);
+int dm_create_device(struct crypt_device *cd, const char *name,
+ const char *type, struct crypt_dm_active_device *dmd,
+ int reload);
+int dm_suspend_and_wipe_key(struct crypt_device *cd, const char *name);
+int dm_resume_and_reinstate_key(struct crypt_device *cd, const char *name,
+ size_t key_size, const char *key);
+
const char *dm_get_dir(void);
-int dm_init(struct crypt_device *context, int check_kernel);
-void dm_exit(void);
-int dm_remove_device(const char *name, int force, uint64_t size);
-int dm_status_device(const char *name);
-int dm_query_device(const char *name,
- char **device,
- uint64_t *size,
- uint64_t *skip,
- uint64_t *offset,
- char **cipher,
- int *key_size,
- char **key,
- int *read_only,
- int *suspended,
- char **uuid);
-int dm_create_device(const char *name, const char *device, const char *cipher,
- const char *type, const char *uuid,
- uint64_t size, uint64_t skip, uint64_t offset,
- size_t key_size, const char *key,
- int read_only, int reload);
-int dm_suspend_and_wipe_key(const char *name);
-int dm_resume_and_reinstate_key(const char *name,
- size_t key_size,
- const char *key);
-char *dm_device_path(int major, int minor);
-int dm_is_dm_device(int major, int minor);
-int dm_is_dm_kernel_name(const char *name);
#endif /* _UTILS_DM_H */