121 lines
4.1 KiB
C
121 lines
4.1 KiB
C
/****************************************************************************
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* net/local/local_bind.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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#if defined(CONFIG_NET) && defined(CONFIG_NET_LOCAL)
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#include <sys/socket.h>
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#include <string.h>
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#include <assert.h>
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#include <nuttx/net/net.h>
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#include "local/local.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: local_bind
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*
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* Description:
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* This function implements the low-level parts of the standard local
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* bind()operation.
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*
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****************************************************************************/
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int psock_local_bind(FAR struct socket *psock,
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FAR const struct sockaddr *addr, socklen_t addrlen)
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{
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FAR struct local_conn_s *conn;
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FAR const struct sockaddr_un *unaddr =
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(FAR const struct sockaddr_un *)addr;
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int namelen;
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DEBUGASSERT(psock != NULL && psock->s_conn != NULL &&
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unaddr != NULL && unaddr->sun_family == AF_LOCAL &&
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addrlen >= sizeof(sa_family_t));
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conn = (FAR struct local_conn_s *)psock->s_conn;
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/* Save the address family */
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conn->lc_proto = psock->s_type;
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/* Now determine the type of the Unix domain socket by comparing the size
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* of the address description.
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*/
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if (addrlen == sizeof(sa_family_t))
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{
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/* No sun_path... This is an un-named Unix domain socket */
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conn->lc_type = LOCAL_TYPE_UNNAMED;
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}
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else
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{
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namelen = strnlen(unaddr->sun_path, UNIX_PATH_MAX - 1);
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if (namelen <= 0)
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{
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/* Zero-length sun_path... This is an abstract Unix domain socket */
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conn->lc_type = LOCAL_TYPE_ABSTRACT;
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conn->lc_path[0] = '\0';
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}
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else
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{
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/* This is an normal, pathname Unix domain socket */
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conn->lc_type = LOCAL_TYPE_PATHNAME;
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/* Copy the path into the connection structure */
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strncpy(conn->lc_path, unaddr->sun_path, UNIX_PATH_MAX - 1);
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conn->lc_path[UNIX_PATH_MAX - 1] = '\0';
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conn->lc_instance_id = -1;
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}
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}
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conn->lc_state = LOCAL_STATE_BOUND;
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return OK;
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}
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#endif /* CONFIG_NET && CONFIG_NET_LOCAL */
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