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/* Copyright 2020-2021 IGEL Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "dlm-protocol.h"
#include <errno.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
bool receive_dlm_client_request(int socket, struct dlm_client_request *request)
{
ssize_t len;
struct iovec iov = {
.iov_base = request,
.iov_len = sizeof(*request),
};
struct msghdr msg = {
.msg_iov = &iov,
.msg_iovlen = 1,
};
while ((len = recvmsg(socket, &msg, 0)) < 0) {
if (errno != EINTR)
return false;
}
if (len != sizeof(*request)) {
errno = EPROTO;
return false;
}
return true;
}
bool send_dlm_client_request(int socket, struct dlm_client_request *request)
{
struct iovec iov = {
.iov_base = request,
.iov_len = sizeof(*request),
};
struct msghdr msg = {
.msg_iov = &iov,
.msg_iovlen = 1,
};
while (sendmsg(socket, &msg, 0) < 1) {
if (errno != EINTR)
return false;
}
return true;
}
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