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- /****************************************************************************
- * net/usrsock/usrsock_close.c
- *
- * Copyright (C) 2015, 2017 Haltian Ltd. All rights reserved.
- * Author: Jussi Kivilinna <jussi.kivilinna@haltian.com>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #if defined(CONFIG_NET) && defined(CONFIG_NET_USRSOCK)
- #include <stdint.h>
- #include <string.h>
- #include <assert.h>
- #include <errno.h>
- #include <debug.h>
- #include <arch/irq.h>
- #include <sys/socket.h>
- #include <nuttx/semaphore.h>
- #include <nuttx/net/net.h>
- #include <nuttx/net/usrsock.h>
- #include "usrsock/usrsock.h"
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- static uint16_t close_event(FAR struct net_driver_s *dev, FAR void *pvconn,
- FAR void *pvpriv, uint16_t flags)
- {
- FAR struct usrsock_reqstate_s *pstate = pvpriv;
- FAR struct usrsock_conn_s *conn = pvconn;
- if (flags & USRSOCK_EVENT_ABORT)
- {
- ninfo("socket aborted.\n");
- conn->state = USRSOCK_CONN_STATE_ABORTED;
- pstate->result = -ECONNABORTED;
- /* Stop further callbacks */
- pstate->cb->flags = 0;
- pstate->cb->priv = NULL;
- pstate->cb->event = NULL;
- /* Wake up the waiting thread */
- nxsem_post(&pstate->recvsem);
- }
- else if (flags & USRSOCK_EVENT_REQ_COMPLETE)
- {
- ninfo("request completed.\n");
- pstate->result = conn->resp.result;
- /* Stop further callbacks */
- pstate->cb->flags = 0;
- pstate->cb->priv = NULL;
- pstate->cb->event = NULL;
- /* Wake up the waiting thread */
- nxsem_post(&pstate->recvsem);
- }
- return flags;
- }
- /****************************************************************************
- * Name: do_close_request
- ****************************************************************************/
- static int do_close_request(FAR struct usrsock_conn_s *conn)
- {
- struct usrsock_request_close_s req = {};
- struct iovec bufs[1];
- /* Prepare request for daemon to read. */
- req.head.reqid = USRSOCK_REQUEST_CLOSE;
- req.usockid = conn->usockid;
- bufs[0].iov_base = (FAR void *)&req;
- bufs[0].iov_len = sizeof(req);
- return usrsockdev_do_request(conn, bufs, ARRAY_SIZE(bufs));
- }
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: usrsock_close
- *
- * Description:
- *
- ****************************************************************************/
- int usrsock_close(FAR struct usrsock_conn_s *conn)
- {
- struct usrsock_reqstate_s state = {};
- int ret;
- net_lock();
- if (conn->state == USRSOCK_CONN_STATE_UNINITIALIZED ||
- conn->state == USRSOCK_CONN_STATE_ABORTED)
- {
- /* Already closed? */
- ninfo("usockid=%d; already closed.\n", conn->usockid);
- ret = OK;
- goto close_out;
- }
- /* Set up event callback for usrsock. */
- ret = usrsock_setup_request_callback(conn, &state, close_event,
- USRSOCK_EVENT_ABORT |
- USRSOCK_EVENT_REQ_COMPLETE);
- if (ret < 0)
- {
- nwarn("usrsock_setup_request_callback failed: %d\n", ret);
- goto errout;
- }
- /* Request user-space daemon to close socket. */
- ret = do_close_request(conn);
- if (ret < 0)
- {
- ret = OK; /* Error? return OK for close. */
- }
- else
- {
- /* Wait for completion of request. */
- while ((ret = net_lockedwait(&state.recvsem)) < OK)
- {
- DEBUGASSERT(ret == -EINTR || ret == -ECANCELED);
- }
- ret = state.result;
- if (ret < 0)
- {
- /* TODO: Error handling for close? Mark closed anyway? There is not
- * much we can do if this happens.
- */
- ninfo("user-space daemon reported error %d for usockid=%d\n",
- state.result, conn->usockid);
- ret = OK;
- }
- }
- usrsock_teardown_request_callback(&state);
- close_out:
- conn->state = USRSOCK_CONN_STATE_UNINITIALIZED;
- conn->usockid = -1;
- errout:
- net_unlock();
- return ret;
- }
- #endif /* CONFIG_NET && CONFIG_NET_USRSOCK */
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