21041af8a7
As a policy, all internal OS implementations must use "detached" files which are valid in any context and do not depend on the validity of a file descriptor at any point in time. This commit converts the usage of file descriptors to detached files throughout the local socket implementation.
Squashed commit of the following:
net/local: Finish change to eliminate use of file descriptors.
net/local: A little more of the conversion.
net/local: Beginning of chnages to eliminate use of file descriptors in the local socket implementeation. poll() will be a problem.
106 lines
3.7 KiB
C
106 lines
3.7 KiB
C
/****************************************************************************
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* net/local/local_send.c
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*
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* Copyright (C) 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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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#include <sys/types.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/net/net.h>
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#include "local/local.h"
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#ifdef CONFIG_NET_LOCAL_STREAM
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: psock_local_send
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*
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* Description:
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* Send a local packet as a stream.
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*
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* Parameters:
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* psock An instance of the internal socket structure.
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* buf Data to send
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* len Length of data to send
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* flags Send flags (ignored for now)
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*
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* Return:
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* On success, returns the number of characters sent. On error,
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* -1 is returned, and errno is set appropriately (see send() for the
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* list of errno numbers).
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*
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****************************************************************************/
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ssize_t psock_local_send(FAR struct socket *psock, FAR const void *buf,
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size_t len, int flags)
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{
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FAR struct local_conn_s *peer;
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int ret;
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DEBUGASSERT(psock && psock->s_conn && buf);
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peer = (FAR struct local_conn_s *)psock->s_conn;
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/* Verify that this is a connected peer socket and that it has opened the
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* outgoing FIFO for write-only access.
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*/
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if (peer->lc_state != LOCAL_STATE_CONNECTED ||
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peer->lc_outfile.f_inode == NULL)
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{
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nerr("ERROR: not connected\n");
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return -ENOTCONN;
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}
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/* Send the packet */
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ret = local_send_packet(&peer->lc_outfile, (FAR uint8_t *)buf, len);
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/* If the send was successful, then the full packet will have been sent */
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return ret < 0 ? ret : len;
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}
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#endif /* CONFIG_NET_LOCAL_STREAM */
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