Imported Upstream version 1.6.7

[platform/upstream/cryptsetup.git] / lib / utils_dm.h

diff --git a/lib/utils_dm.h b/lib/utils_dm.h
index 6eb24c1..cd8b653 100644 (file)
--- a/lib/utils_dm.h
+++ b/lib/utils_dm.h
@@ -1,13 +1,15 @@
 /*
  * libdevmapper - device-mapper backend for cryptsetup
  *
- * Copyright (C) 2004, Christophe Saout <christophe@saout.de>
+ * Copyright (C) 2004, Jana Saout <jana@saout.de>
  * Copyright (C) 2004-2007, Clemens Fruhwirth <clemens@endorphin.org>
- * Copyright (C) 2009-2012, Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2009-2015, Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2009-2015, 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
@@ -28,6 +30,7 @@
 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 */
@@ -36,22 +39,31 @@ struct crypt_params_verity;
 #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 */
+#define DM_TCW_SUPPORTED      (1 << 6) /* tcw (TCRYPT CBC with whitening) */
+#define DM_SAME_CPU_CRYPT_SUPPORTED (1 << 7) /* same_cpu_crypt */
+#define DM_SUBMIT_FROM_CRYPT_CPUS_SUPPORTED (1 << 8) /* submit_from_crypt_cpus */
+
 uint32_t dm_flags(void);
 
 #define DM_ACTIVE_DEVICE       (1 << 0)
-#define DM_ACTIVE_CIPHER       (1 << 1)
-#define DM_ACTIVE_UUID         (1 << 2)
-#define DM_ACTIVE_KEYSIZE      (1 << 3)
-#define DM_ACTIVE_KEY          (1 << 4)
+#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 *device;
                const char *cipher;
 
                /* Active key for device */
@@ -62,54 +74,39 @@ struct crypt_dm_active_device {
                uint64_t iv_offset;     /* IV initilisation sector */
        } crypt;
        struct {
-               const char *data_device;
-               const char *hash_device;
+               struct device *hash_device;
 
                const char *root_hash;
-               size_t root_hash_size;
+               uint32_t root_hash_size;
 
-               uint64_t hash_offset;   /* hash offset (not header) */
+               uint64_t hash_offset;   /* hash offset in blocks (not header) */
+               struct crypt_params_verity *vp;
        } verity;
        } u;
 };
 
-struct crypt_dm_active_verity {
-       const char *data_device;
-       const char *hash_device;
+void dm_backend_init(void);
+void dm_backend_exit(void);
 
-       const char *root_hash;
-       size_t root_hash_size;
-
-       uint64_t hash_offset;   /* hash offset (not header) */
-       uint64_t size;          /* active device size */
-       uint32_t flags;         /* activation flags */
-};
+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_status_suspended(const char *name);
-int dm_status_verity_ok(const char *name);
-int dm_query_device(const char *name, uint32_t get_flags,
-                   struct crypt_dm_active_device *dmd);
-int dm_query_verity(const char *name,
-                   struct crypt_dm_active_verity *dmd);
-int dm_create_device(const char *name,
-                     const char *type,
-                     struct crypt_dm_active_device *dmd,
-                     int reload);
-int dm_create_verity(const char *name,
-                    struct crypt_params_verity *params,
-                    struct crypt_dm_active_verity *dmd);
-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(const char *prefix, int major, int minor);
+
+/* These are DM helpers used only by utils_devpath file */
 int dm_is_dm_device(int major, int minor);
 int dm_is_dm_kernel_name(const char *name);
-int dm_check_segment(const char *name, uint64_t offset, uint64_t size);
+char *dm_device_path(const char *prefix, int major, int minor);
 
 #endif /* _UTILS_DM_H */