4 /* device-mapper library helpers */
10 /* Device mapper backend - kernel support flags */
11 #define DM_KEY_WIPE_SUPPORTED (1 << 0) /* key wipe message */
12 #define DM_LMK_SUPPORTED (1 << 1) /* lmk mode */
13 #define DM_SECURE_SUPPORTED (1 << 2) /* wipe (secure) buffer flag */
14 #define DM_PLAIN64_SUPPORTED (1 << 3) /* plain64 IV */
15 #define DM_DISCARDS_SUPPORTED (1 << 4) /* discards/TRIM option is supported */
16 uint32_t dm_flags(void);
18 #define DM_ACTIVE_DEVICE (1 << 0)
19 #define DM_ACTIVE_CIPHER (1 << 1)
20 #define DM_ACTIVE_UUID (1 << 2)
21 #define DM_ACTIVE_KEY (1 << 3)
23 #define DM_ACTIVE_ALL ( \
29 struct crypt_dm_active_device {
34 /* Active key for device */
35 struct volume_key *vk;
37 /* struct crypt_active_device */
38 uint64_t offset; /* offset in sectors */
39 uint64_t iv_offset; /* IV initilisation sector */
40 uint64_t size; /* active device size */
41 uint32_t flags; /* activation flags */
44 const char *dm_get_dir(void);
45 int dm_init(struct crypt_device *context, int check_kernel);
47 int dm_remove_device(const char *name, int force, uint64_t size);
48 int dm_status_device(const char *name);
49 int dm_status_suspended(const char *name);
50 int dm_query_device(const char *name, uint32_t get_flags,
51 struct crypt_dm_active_device *dmd);
52 int dm_create_device(const char *name,
54 struct crypt_dm_active_device *dmd,
56 int dm_suspend_and_wipe_key(const char *name);
57 int dm_resume_and_reinstate_key(const char *name,
60 char *dm_device_path(const char *prefix, int major, int minor);
61 int dm_is_dm_device(int major, int minor);
62 int dm_is_dm_kernel_name(const char *name);
63 int dm_check_segment(const char *name, uint64_t offset, uint64_t size);
65 #endif /* _UTILS_DM_H */