[sheepdog] [PATCH 2/4] sheep: add a operation to get cluster info

[Liu Yuan]

This is a preparation patch.

Signed-off-by: Liu Yuan <namei.unix at gmail.com>
---
 include/internal_proto.h |  1 +
 sheep/ops.c              | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/include/internal_proto.h b/include/internal_proto.h
index ace4ac5..0eb7227 100644
--- a/include/internal_proto.h
+++ b/include/internal_proto.h
@@ -100,6 +100,7 @@
 #define SD_OP_NFS_CREATE	0xBB
 #define SD_OP_NFS_DELETE	0xBC
 #define SD_OP_EXIST	0xBD
+#define SD_OP_CLUSTER_INFO	0xBE
 
 /* internal flags for hdr.flags, must be above 0x80 */
 #define SD_FLAG_CMD_RECOVERY 0x0080
diff --git a/sheep/ops.c b/sheep/ops.c
index ca00a18..6db5c57 100644
--- a/sheep/ops.c
+++ b/sheep/ops.c
@@ -1028,6 +1028,14 @@ static int local_oid_exist(struct request *req)
 	return SD_RES_NO_OBJ;
 }
 
+static int local_cluster_info(const struct sd_req *req, struct sd_rsp *rsp,
+			      void *data)
+{
+	memcpy(data, &sys->cinfo, sizeof(sys->cinfo));
+	rsp->data_length = sizeof(sys->cinfo);
+	return SD_RES_SUCCESS;
+}
+
 #ifdef HAVE_NFS
 
 static int local_nfs_create(struct request *req)
@@ -1356,6 +1364,13 @@ static struct sd_op_template sd_ops[] = {
 		.process_work = local_oid_exist,
 	},
 
+	[SD_OP_CLUSTER_INFO] = {
+		.name = "CLUSTER INFO",
+		.type = SD_OP_TYPE_LOCAL,
+		.force = true,
+		.process_main = local_cluster_info,
+	},
+
 #ifdef HAVE_NFS
 	[SD_OP_NFS_CREATE] = {
 		.name = "NFS_CREATE",
-- 
1.8.1.2