uuid: Add inline helpers to import / export UUIDs (d01cd624) · Commits · 戴 / test

Sometimes we may need to import UUID from or export to the raw buffer, which is provided outside of kernel and can't be declared as UUID type. With current API this operation will require an explicit casting to one of UUID types and length, that is always a constant derived as sizeof the certain UUID type. Provide a helpful set of inline helpers to minimize developer's effort in the cases when raw buffers are involved. Suggested-by:

David Sterba <dsterba@suse.cz> Acked-by:

Christoph Hellwig <hch@lst.de> Signed-off-by:

Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:

David Sterba <dsterba@suse.com>

include/linux/uuid.h

+20 −0

Original line number	Diff line number	Diff line
		@@ -43,6 +43,16 @@ static inline void guid_copy(guid_t dst, const guid_t src)
		memcpy(dst, src, sizeof(guid_t));
		}

		static inline void import_guid(guid_t dst, const __u8 src)
		{
		memcpy(dst, src, sizeof(guid_t));
		}

		static inline void export_guid(__u8 dst, const guid_t src)
		{
		memcpy(dst, src, sizeof(guid_t));
		}

		static inline bool guid_is_null(const guid_t *guid)
		{
		return guid_equal(guid, &guid_null);
		@@ -58,6 +68,16 @@ static inline void uuid_copy(uuid_t dst, const uuid_t src)
		memcpy(dst, src, sizeof(uuid_t));
		}

		static inline void import_uuid(uuid_t dst, const __u8 src)
		{
		memcpy(dst, src, sizeof(uuid_t));
		}

		static inline void export_uuid(__u8 dst, const uuid_t src)
		{
		memcpy(dst, src, sizeof(uuid_t));
		}

		static inline bool uuid_is_null(const uuid_t *uuid)
		{
		return uuid_equal(uuid, &uuid_null);

Admin message