X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=lib%2Futils_dm.h;h=8af91e8dd76cefaae85f5f32228e7014e5927770;hb=83f02e66827fa6fa66f9b73a009d2ba51d22352d;hp=85e09414fc6c2fd4a53bc6ac90c7d3514b775286;hpb=4b0b82adc559659a723b00c5b93275aa2b960591;p=platform%2Fupstream%2Fcryptsetup.git

diff --git a/lib/utils_dm.h b/lib/utils_dm.h
index 85e0941..8af91e8 100644
--- a/lib/utils_dm.h
+++ b/lib/utils_dm.h
@@ -4,6 +4,7 @@
  * 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
@@ -28,6 +29,7 @@
 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 */
@@ -35,66 +37,66 @@ struct crypt_params_verity;
 #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_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)
 
-struct crypt_dm_active_device {
-	const char *device;
-	const char *cipher;
-	const char *uuid;
+#define DM_ACTIVE_CRYPT_CIPHER	(1 << 2)
+#define DM_ACTIVE_CRYPT_KEYSIZE	(1 << 3)
+#define DM_ACTIVE_CRYPT_KEY	(1 << 4)
 
-	/* Active key for device */
-	struct volume_key *vk;
+#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_active_device */
-	uint64_t offset;	/* offset in sectors */
-	uint64_t iv_offset;	/* IV initilisation sector */
+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;
 
-struct crypt_dm_active_verity {
-	const char *data_device;
-	const char *hash_device;
+		/* Active key for device */
+		struct volume_key *vk;
 
-	const char *root_hash;
-	size_t root_hash_size;
+		/* struct crypt_active_device */
+		uint64_t offset;	/* offset in sectors */
+		uint64_t iv_offset;	/* IV initilisation sector */
+	} crypt;
+	struct {
+		struct device *hash_device;
 
-	uint64_t hash_offset;	/* hash offset (not header) */
-	uint64_t size;		/* active device size */
-	uint32_t flags;		/* activation flags */
+		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_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);
-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);
 
 #endif /* _UTILS_DM_H */