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/****************************************************************************
* net/local/local_conn.c
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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_LOCAL)
#include <semaphore.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <queue.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include "local/local.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: local_initialize
*
* Description:
* Initialize the local, Unix domain connection structures. Called once
* and only from the common network initialization logic.
*
****************************************************************************/
void local_initialize(void)
{
dq_init(&g_local_listeners);
}
/****************************************************************************
* Name: local_alloc()
*
* Description:
* Allocate a new, uninitialized Unix domain socket connection structure.
* This is normally something done by the implementation of the socket()
* API
*
****************************************************************************/
FAR struct local_conn_s *local_alloc(void)
{
FAR struct local_conn_s *conn =
(FAR struct local_conn_s *)kmm_zalloc(sizeof(struct local_conn_s));
if (conn)
{
/* Initialize non-zero elements the new connection structure */
conn->lc_infd = -1;
conn->lc_outfd = -1;
sem_init(&conn->lc_waitsem, 0, 0);
}
return conn;
}
/****************************************************************************
* Name: local_free()
*
* Description:
* Free a packet Unix domain connection structure that is no longer in use.
* This should be done by the implementation of close().
*
****************************************************************************/
void local_free(FAR struct local_conn_s *conn)
{
DEBUGASSERT(conn != NULL);
/* Make sure that the read-only FIFO is closed */
if (conn->lc_infd >= 0)
{
close(conn->lc_infd);
}
/* Make sure that the write-only FIFO is closed */
if (conn->lc_outfd >= 0)
{
close(conn->lc_outfd);
}
/* Destroy all FIFOs associted with the connection */
local_destroy_fifos(conn);
sem_destroy(&conn->lc_waitsem);
/* And free the connection structure */
kmm_free(conn);
}
#endif /* CONFIG_NET && CONFIG_NET_LOCAL */
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