[PATCH v2 1/2] uuid: Add a glue layer macros for raw buffers

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

When the ID comes from or we would like to pass it to a raw buffer,
the casting is needed.

Instead of doing it each time, provide a helpful set of macros.

Suggested-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 include/linux/uuid.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/linux/uuid.h b/include/linux/uuid.h
index d9c4a6cce3c2..917f1d4e5d44 100644
--- a/include/linux/uuid.h
+++ b/include/linux/uuid.h
@@ -51,11 +51,16 @@ static inline void guid_copy(guid_t *dst, const guid_t *src)
 	memcpy(dst, src, sizeof(guid_t));
 }
 
+#define guid_copy_from_raw(dst, src)	guid_copy(dst, (const guid_t *)src)
+#define guid_copy_to_raw(dst, src)	guid_copy((void *)dst, src)
+
 static inline bool guid_is_null(const guid_t *guid)
 {
 	return guid_equal(guid, &guid_null);
 }
 
+#define guid_is_null_raw(guid)		guid_is_null((const guid_t *)guid)
+
 static inline bool uuid_equal(const uuid_t *u1, const uuid_t *u2)
 {
 	return memcmp(u1, u2, sizeof(uuid_t)) == 0;
@@ -66,16 +71,24 @@ static inline void uuid_copy(uuid_t *dst, const uuid_t *src)
 	memcpy(dst, src, sizeof(uuid_t));
 }
 
+#define uuid_copy_from_raw(dst, src)	uuid_copy(dst, (const uuid_t *)src)
+#define uuid_copy_to_raw(dst, src)	uuid_copy((void *)dst, src)
+
 static inline bool uuid_is_null(const uuid_t *uuid)
 {
 	return uuid_equal(uuid, &uuid_null);
 }
 
+#define uuid_is_null_raw(uuid)		uuid_is_null((const uuid_t *)uuid)
+
 void generate_random_uuid(unsigned char uuid[16]);
 
 extern void guid_gen(guid_t *u);
 extern void uuid_gen(uuid_t *u);
 
+#define guid_gen_raw(guid)		guid_gen((guid_t *)guid)
+#define uuid_gen_raw(uuid)		uuid_gen((uuid_t *)uuid)
+
 bool __must_check uuid_is_valid(const char *uuid);
 
 extern const u8 guid_index[16];
-- 
2.20.1