644c4afeed
Seperate usrsock device driver with usrsock core function layer to make it more flexiable to adopt other kind of usrsock interface driver Signed-off-by: liangchaozhong <liangchaozhong@xiaomi.com>
230 lines
6.6 KiB
C
230 lines
6.6 KiB
C
/****************************************************************************
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* net/usrsock/usrsock_getsockname.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#if defined(CONFIG_NET) && defined(CONFIG_NET_USRSOCK)
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#include <stdint.h>
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#include <string.h>
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#include <assert.h>
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#include <errno.h>
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#include <debug.h>
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#include <arch/irq.h>
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#include <sys/socket.h>
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#include <nuttx/net/net.h>
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#include <nuttx/net/usrsock.h>
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#include "usrsock/usrsock.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static uint16_t getsockname_event(FAR struct net_driver_s *dev,
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FAR void *pvpriv, uint16_t flags)
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{
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FAR struct usrsock_data_reqstate_s *pstate = pvpriv;
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FAR struct usrsock_conn_s *conn = pstate->reqstate.conn;
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if (flags & USRSOCK_EVENT_ABORT)
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{
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ninfo("socket aborted.\n");
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pstate->reqstate.result = -ECONNABORTED;
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pstate->valuelen = 0;
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/* Stop further callbacks */
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pstate->reqstate.cb->flags = 0;
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pstate->reqstate.cb->priv = NULL;
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pstate->reqstate.cb->event = NULL;
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/* Wake up the waiting thread */
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nxsem_post(&pstate->reqstate.recvsem);
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}
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else if (flags & USRSOCK_EVENT_REQ_COMPLETE)
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{
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ninfo("request completed.\n");
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pstate->reqstate.result = conn->resp.result;
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if (pstate->reqstate.result < 0)
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{
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pstate->valuelen = 0;
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pstate->valuelen_nontrunc = 0;
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}
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else
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{
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pstate->valuelen = conn->resp.valuelen;
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pstate->valuelen_nontrunc = conn->resp.valuelen_nontrunc;
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}
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/* Stop further callbacks */
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pstate->reqstate.cb->flags = 0;
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pstate->reqstate.cb->priv = NULL;
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pstate->reqstate.cb->event = NULL;
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/* Wake up the waiting thread */
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nxsem_post(&pstate->reqstate.recvsem);
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}
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return flags;
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}
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/****************************************************************************
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* Name: do_getsockopt_request
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****************************************************************************/
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static int do_getsockname_request(FAR struct usrsock_conn_s *conn,
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socklen_t addrlen)
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{
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struct usrsock_request_getsockname_s req =
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{
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};
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struct iovec bufs[1];
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if (addrlen > UINT16_MAX)
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{
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addrlen = UINT16_MAX;
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}
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/* Prepare request for daemon to read. */
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req.head.reqid = USRSOCK_REQUEST_GETSOCKNAME;
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req.usockid = conn->usockid;
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req.max_addrlen = addrlen;
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bufs[0].iov_base = (FAR void *)&req;
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bufs[0].iov_len = sizeof(req);
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return usrsock_do_request(conn, bufs, ARRAY_SIZE(bufs));
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: usrsock_getsockname
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*
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* Description:
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* The getsockname() function retrieves the locally-bound name of the
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* specified socket, stores this address in the sockaddr structure pointed
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* to by the 'addr' argument, and stores the length of this address in the
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* object pointed to by the 'addrlen' argument.
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*
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* If the actual length of the address is greater than the length of the
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* supplied sockaddr structure, the stored address will be truncated.
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*
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* If the socket has not been bound to a local name, the value stored in
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* the object pointed to by address is unspecified.
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*
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* Input Parameters:
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* psock A reference to the socket structure of the socket
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* addr sockaddr structure to receive data [out]
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* addrlen Length of sockaddr structure [in/out]
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*
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****************************************************************************/
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int usrsock_getsockname(FAR struct socket *psock,
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FAR struct sockaddr *addr, FAR socklen_t *addrlen)
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{
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FAR struct usrsock_conn_s *conn = psock->s_conn;
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struct usrsock_data_reqstate_s state =
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{
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};
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struct iovec inbufs[1];
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socklen_t outaddrlen = 0;
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int ret;
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net_lock();
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if (conn->state == USRSOCK_CONN_STATE_UNINITIALIZED ||
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conn->state == USRSOCK_CONN_STATE_ABORTED)
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{
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/* Invalid state or closed by daemon. */
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ninfo("usockid=%d; getsockname() with uninitialized usrsock.\n",
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conn->usockid);
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ret = (conn->state == USRSOCK_CONN_STATE_ABORTED) ? -EPIPE :
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-ECONNRESET;
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goto errout_unlock;
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}
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/* Set up event callback for usrsock. */
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ret = usrsock_setup_data_request_callback(
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conn, &state, getsockname_event,
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USRSOCK_EVENT_ABORT | USRSOCK_EVENT_REQ_COMPLETE);
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if (ret < 0)
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{
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nwarn("usrsock_setup_request_callback failed: %d\n", ret);
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goto errout_unlock;
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}
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inbufs[0].iov_base = (FAR void *)addr;
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inbufs[0].iov_len = *addrlen;
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usrsock_setup_datain(conn, inbufs, ARRAY_SIZE(inbufs));
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/* Request user-space daemon to handle request. */
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ret = do_getsockname_request(conn, *addrlen);
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if (ret >= 0)
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{
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/* Wait for completion of request. */
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net_lockedwait_uninterruptible(&state.reqstate.recvsem);
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ret = state.reqstate.result;
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DEBUGASSERT(state.valuelen <= *addrlen);
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DEBUGASSERT(state.valuelen <= state.valuelen_nontrunc);
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if (ret >= 0)
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{
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/* Store length of data that was written to 'value' buffer. */
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outaddrlen = state.valuelen_nontrunc;
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}
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}
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usrsock_teardown_datain(conn);
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usrsock_teardown_data_request_callback(&state);
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errout_unlock:
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net_unlock();
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*addrlen = outaddrlen;
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return ret;
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}
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#endif /* CONFIG_NET && CONFIG_NET_USRSOCK */
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