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/*
Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
/* rpc related syncops */
#include "syncop.h"
#include "rpc-clnt.h"
#include "protocol-common.h"
#include "xdr-generic.h"
#include "glusterd1-xdr.h"
#include "glusterd-syncop.h"
int
gd_syncop_submit_request (struct rpc_clnt *rpc, void *req,
void *cookie, rpc_clnt_prog_t *prog,
int procnum, fop_cbk_fn_t cbkfn, xdrproc_t xdrproc)
{
int ret = -1;
struct iobuf *iobuf = NULL;
struct iobref *iobref = NULL;
int count = 0;
struct iovec iov = {0, };
ssize_t req_size = 0;
GF_ASSERT (rpc);
if (!req)
goto out;
req_size = xdr_sizeof (xdrproc, req);
iobuf = iobuf_get2 (rpc->ctx->iobuf_pool, req_size);
if (!iobuf)
goto out;
iobref = iobref_new ();
if (!iobref)
goto out;
iobref_add (iobref, iobuf);
iov.iov_base = iobuf->ptr;
iov.iov_len = iobuf_pagesize (iobuf);
/* Create the xdr payload */
ret = xdr_serialize_generic (iov, req, xdrproc);
if (ret == -1)
goto out;
iov.iov_len = ret;
count = 1;
/* Send the msg */
ret = rpc_clnt_submit (rpc, prog, procnum, cbkfn,
&iov, count, NULL, 0, iobref,
(call_frame_t *)cookie, NULL, 0, NULL, 0, NULL);
/* TODO: do we need to start ping also? */
out:
iobref_unref (iobref);
iobuf_unref (iobuf);
return ret;
}
/* Defined in glusterd-rpc-ops.c */
extern struct rpc_clnt_program gd_mgmt_prog;
int32_t
gd_syncop_mgmt_lock_cbk (struct rpc_req *req, struct iovec *iov,
int count, void *cookie)
{
struct syncargs *args = NULL;
gd1_mgmt_cluster_lock_rsp rsp = {{0},};
int ret = -1;
args = cookie;
/* initialize */
args->op_ret = -1;
args->op_errno = EINVAL;
if (-1 == req->rpc_status) {
args->op_errno = ENOTCONN;
goto out;
}
ret = xdr_to_generic (*iov, &rsp,
(xdrproc_t)xdr_gd1_mgmt_cluster_lock_rsp);
if (ret < 0) {
goto out;
}
args->op_ret = rsp.op_ret;
args->op_errno = rsp.op_errno;
uuid_copy (args->uuid, rsp.uuid);
out:
__wake (args);
return 0;
}
int
gd_syncop_mgmt_lock (struct rpc_clnt *rpc, uuid_t my_uuid, uuid_t recv_uuid)
{
struct syncargs args = {0, };
gd1_mgmt_cluster_lock_req req = {{0},};
uuid_copy (req.uuid, my_uuid);
args.op_ret = -1;
args.op_errno = ENOTCONN;
GD_SYNCOP (rpc, (&args), gd_syncop_mgmt_lock_cbk,
&req, &gd_mgmt_prog, GLUSTERD_MGMT_CLUSTER_LOCK,
xdr_gd1_mgmt_cluster_lock_req);
if (!args.op_ret)
uuid_copy (recv_uuid, args.uuid);
errno = args.op_errno;
return args.op_ret;
}
int32_t
gd_syncop_mgmt_unlock_cbk (struct rpc_req *req, struct iovec *iov,
int count, void *cookie)
{
struct syncargs *args = NULL;
gd1_mgmt_cluster_unlock_rsp rsp = {{0},};
int ret = -1;
args = cookie;
/* initialize */
args->op_ret = -1;
args->op_errno = EINVAL;
if (-1 == req->rpc_status) {
args->op_errno = ENOTCONN;
goto out;
}
ret = xdr_to_generic (*iov, &rsp,
(xdrproc_t)xdr_gd1_mgmt_cluster_unlock_rsp);
if (ret < 0) {
goto out;
}
args->op_ret = rsp.op_ret;
args->op_errno = rsp.op_errno;
uuid_copy (args->uuid, rsp.uuid);
out:
__wake (args);
return 0;
}
int
gd_syncop_mgmt_unlock (struct rpc_clnt *rpc, uuid_t my_uuid, uuid_t recv_uuid)
{
struct syncargs args = {0, };
gd1_mgmt_cluster_unlock_req req = {{0},};
uuid_copy (req.uuid, my_uuid);
args.op_ret = -1;
args.op_errno = ENOTCONN;
GD_SYNCOP (rpc, (&args), gd_syncop_mgmt_unlock_cbk,
&req, &gd_mgmt_prog, GLUSTERD_MGMT_CLUSTER_UNLOCK,
xdr_gd1_mgmt_cluster_unlock_req);
if (!args.op_ret)
uuid_copy (recv_uuid, args.uuid);
errno = args.op_errno;
return args.op_ret;
}
int32_t
gd_syncop_stage_op_cbk (struct rpc_req *req, struct iovec *iov,
int count, void *cookie)
{
struct syncargs *args = NULL;
gd1_mgmt_stage_op_rsp rsp = {{0},};
int ret = -1;
args = cookie;
/* initialize */
args->op_ret = -1;
args->op_errno = EINVAL;
if (-1 == req->rpc_status) {
args->op_errno = ENOTCONN;
goto out;
}
ret = xdr_to_generic (*iov, &rsp,
(xdrproc_t)xdr_gd1_mgmt_stage_op_rsp);
if (ret < 0) {
goto out;
}
if (rsp.dict.dict_len) {
/* Unserialize the dictionary */
args->dict = dict_new ();
ret = dict_unserialize (rsp.dict.dict_val,
rsp.dict.dict_len,
&args->dict);
if (ret < 0) {
GF_FREE (rsp.dict.dict_val);
goto out;
} else {
args->dict->extra_stdfree = rsp.dict.dict_val;
}
}
args->op_ret = rsp.op_ret;
args->op_errno = rsp.op_errno;
uuid_copy (args->uuid, rsp.uuid);
args->errstr = gf_strdup (rsp.op_errstr);
out:
__wake (args);
return 0;
}
int
gd_syncop_mgmt_stage_op (struct rpc_clnt *rpc, uuid_t my_uuid, uuid_t recv_uuid,
int op, dict_t *dict_out, dict_t **dict_in,
char **errstr)
{
struct syncargs args = {0, };
gd1_mgmt_stage_op_req req = {{0},};
int ret = 0;
uuid_copy (req.uuid, my_uuid);
req.op = op;
args.op_ret = -1;
args.op_errno = ENOTCONN;
ret = dict_allocate_and_serialize (dict_out, &req.buf.buf_val,
(size_t *)&req.buf.buf_len);
if (ret)
goto out;
GD_SYNCOP (rpc, (&args), gd_syncop_stage_op_cbk,
&req, &gd_mgmt_prog, GLUSTERD_MGMT_STAGE_OP,
xdr_gd1_mgmt_stage_op_req);
if (args.errstr && errstr)
*errstr = args.errstr;
else if (args.errstr)
GF_FREE (args.errstr);
if (args.dict && dict_in)
*dict_in = args.dict;
else if (args.dict)
dict_unref (args.dict);
uuid_copy (recv_uuid, args.uuid);
out:
errno = args.op_errno;
return args.op_ret;
}
int32_t
gd_syncop_commit_op_cbk (struct rpc_req *req, struct iovec *iov,
int count, void *cookie)
{
struct syncargs *args = NULL;
gd1_mgmt_commit_op_rsp rsp = {{0},};
int ret = -1;
args = cookie;
/* initialize */
args->op_ret = -1;
args->op_errno = EINVAL;
if (-1 == req->rpc_status) {
args->op_errno = ENOTCONN;
goto out;
}
ret = xdr_to_generic (*iov, &rsp,
(xdrproc_t)xdr_gd1_mgmt_commit_op_rsp);
if (ret < 0) {
goto out;
}
if (rsp.dict.dict_len) {
/* Unserialize the dictionary */
args->dict = dict_new ();
ret = dict_unserialize (rsp.dict.dict_val,
rsp.dict.dict_len,
&args->dict);
if (ret < 0) {
GF_FREE (rsp.dict.dict_val);
goto out;
} else {
args->dict->extra_stdfree = rsp.dict.dict_val;
}
}
args->op_ret = rsp.op_ret;
args->op_errno = rsp.op_errno;
uuid_copy (args->uuid, rsp.uuid);
args->errstr = gf_strdup (rsp.op_errstr);
out:
__wake (args);
return 0;
}
int
gd_syncop_mgmt_commit_op (struct rpc_clnt *rpc, uuid_t my_uuid, uuid_t recv_uuid,
int op, dict_t *dict_out, dict_t **dict_in,
char **errstr)
{
struct syncargs args = {0, };
gd1_mgmt_commit_op_req req = {{0},};
int ret = 0;
uuid_copy (req.uuid, my_uuid);
req.op = op;
args.op_ret = -1;
args.op_errno = ENOTCONN;
ret = dict_allocate_and_serialize (dict_out, &req.buf.buf_val,
(size_t *)&req.buf.buf_len);
if (ret)
goto out;
GD_SYNCOP (rpc, (&args), gd_syncop_commit_op_cbk,
&req, &gd_mgmt_prog, GLUSTERD_MGMT_COMMIT_OP,
xdr_gd1_mgmt_commit_op_req);
if (args.errstr && errstr)
*errstr = args.errstr;
else if (args.errstr)
GF_FREE (args.errstr);
if (args.dict && dict_in)
*dict_in = args.dict;
else if (args.dict)
dict_unref (args.dict);
uuid_copy (recv_uuid, args.uuid);
out:
errno = args.op_errno;
return args.op_ret;
}
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