Commit 18261f84 authored by Changpeng Liu's avatar Changpeng Liu Committed by Ben Walker
Browse files

blobfs: add a new API to return file's unique ID 



Change-Id: I066085a0606d64a0d95ab2d28340aa35d83efdf7
Signed-off-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/423504


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
parent ef61d9bc

include/spdk/blobfs.h

+11 −0
Original line number Diff line number Diff line
@@ -388,6 +388,17 @@ void spdk_file_set_priority(struct spdk_file *file, uint32_t priority); 
 */

int spdk_file_sync(struct spdk_file *file, struct spdk_io_channel *channel);



/**

 * Get the unique ID for the file.

 *

 * \param file File to get the ID.

 * \param id ID buffer.

 * \param size Size of the ID buffer.

 *

 * \return the length of ID on success.

 */

int spdk_file_get_id(struct spdk_file *file, void *id, size_t size);



#ifdef __cplusplus

}

#endif

lib/blobfs/blobfs.c

+12 −0
Original line number Diff line number Diff line
@@ -2576,6 +2576,18 @@ spdk_file_close(struct spdk_file *file, struct spdk_io_channel *_channel) 
	return args->rc;

}



int

spdk_file_get_id(struct spdk_file *file, void *id, size_t size)

{

	if (size < sizeof(spdk_blob_id)) {

		return -EINVAL;

	}



	memcpy(id, &file->blobid, sizeof(spdk_blob_id));



	return sizeof(spdk_blob_id);

}



static void

cache_free_buffers(struct spdk_file *file)

{

lib/rocksdb/env_spdk.cc

+9 −3
Original line number Diff line number Diff line
@@ -308,10 +308,16 @@ public: 
			return Status::IOError(spdk_file_get_name(mFile), strerror(errno));

		}

	}

	virtual size_t GetUniqueId(__attribute__((unused)) char *id,

				   __attribute__((unused)) size_t max_size) const override

	virtual size_t GetUniqueId(char *id, size_t max_size) const override

	{

		int rc;



		rc = spdk_file_get_id(mFile, id, max_size);

		if (rc < 0) {

			return 0;

		} else {

			return rc;

		}

	}

};