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https://gitlab.com/cryptsetup/cryptsetup.git
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82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/*
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* libdevmapper - device-mapper backend for cryptsetup
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*
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* Copyright (C) 2004, Christophe Saout <christophe@saout.de>
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* Copyright (C) 2004-2007, Clemens Fruhwirth <clemens@endorphin.org>
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* Copyright (C) 2009-2012, Red Hat, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _UTILS_DM_H
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#define _UTILS_DM_H
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/* device-mapper library helpers */
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#include <inttypes.h>
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struct crypt_device;
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struct volume_key;
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/* Device mapper backend - kernel support flags */
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#define DM_KEY_WIPE_SUPPORTED (1 << 0) /* key wipe message */
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#define DM_LMK_SUPPORTED (1 << 1) /* lmk mode */
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#define DM_SECURE_SUPPORTED (1 << 2) /* wipe (secure) buffer flag */
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#define DM_PLAIN64_SUPPORTED (1 << 3) /* plain64 IV */
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#define DM_DISCARDS_SUPPORTED (1 << 4) /* discards/TRIM option is supported */
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uint32_t dm_flags(void);
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#define DM_ACTIVE_DEVICE (1 << 0)
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#define DM_ACTIVE_CIPHER (1 << 1)
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#define DM_ACTIVE_UUID (1 << 2)
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#define DM_ACTIVE_KEYSIZE (1 << 3)
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#define DM_ACTIVE_KEY (1 << 4)
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struct crypt_dm_active_device {
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const char *device;
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const char *cipher;
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const char *uuid;
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/* Active key for device */
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struct volume_key *vk;
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/* struct crypt_active_device */
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uint64_t offset; /* offset in sectors */
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uint64_t iv_offset; /* IV initilisation sector */
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uint64_t size; /* active device size */
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uint32_t flags; /* activation flags */
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};
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const char *dm_get_dir(void);
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int dm_init(struct crypt_device *context, int check_kernel);
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void dm_exit(void);
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int dm_remove_device(const char *name, int force, uint64_t size);
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int dm_status_device(const char *name);
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int dm_status_suspended(const char *name);
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int dm_query_device(const char *name, uint32_t get_flags,
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struct crypt_dm_active_device *dmd);
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int dm_create_device(const char *name,
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const char *type,
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struct crypt_dm_active_device *dmd,
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int reload);
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int dm_suspend_and_wipe_key(const char *name);
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int dm_resume_and_reinstate_key(const char *name,
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size_t key_size,
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const char *key);
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char *dm_device_path(const char *prefix, int major, int minor);
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int dm_is_dm_device(int major, int minor);
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int dm_is_dm_kernel_name(const char *name);
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int dm_check_segment(const char *name, uint64_t offset, uint64_t size);
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#endif /* _UTILS_DM_H */
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