146 lines
4.4 KiB
C
146 lines
4.4 KiB
C
/****************************************************************************
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* net/socket/socket.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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#include <sys/socket.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 "usrsock/usrsock.h"
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#include "socket/socket.h"
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#ifdef CONFIG_NET
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: psock_socket
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*
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* Description:
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* socket() creates an endpoint for communication and returns a socket
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* structure.
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*
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* Input Parameters:
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* domain (see sys/socket.h)
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* type (see sys/socket.h)
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* protocol (see sys/socket.h)
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* psock A pointer to a user allocated socket structure to be
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* initialized.
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*
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* Returned Value:
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* Returns zero (OK) on success. On failure, it returns a negated errno
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* value to indicate the nature of the error:
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*
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* EACCES
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* Permission to create a socket of the specified type and/or protocol
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* is denied.
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* EAFNOSUPPORT
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* The implementation does not support the specified address family.
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* EINVAL
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* Unknown protocol, or protocol family not available.
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* EMFILE
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* Process file table overflow.
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* ENFILE
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* The system limit on the total number of open files has been reached.
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* ENOBUFS or ENOMEM
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* Insufficient memory is available. The socket cannot be created until
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* sufficient resources are freed.
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* EPROTONOSUPPORT
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* The protocol type or the specified protocol is not supported within
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* this domain.
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*
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****************************************************************************/
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int psock_socket(int domain, int type, int protocol,
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FAR struct socket *psock)
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{
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FAR const struct sock_intf_s *sockif = NULL;
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int ret;
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/* Initialize the socket structure */
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psock->s_domain = domain;
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psock->s_proto = protocol;
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psock->s_conn = NULL;
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#if defined(CONFIG_NET_TCP_WRITE_BUFFERS) || defined(CONFIG_NET_UDP_WRITE_BUFFERS)
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psock->s_sndcb = NULL;
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#endif
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if (type & SOCK_NONBLOCK)
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{
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psock->s_flags |= _SF_NONBLOCK;
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}
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type &= SOCK_TYPE_MASK;
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psock->s_type = type;
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#ifdef CONFIG_NET_USRSOCK
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if (domain != PF_LOCAL && domain != PF_UNSPEC && domain != PF_RPMSG)
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{
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/* Handle special setup for USRSOCK sockets (user-space networking
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* stack).
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*/
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ret = g_usrsock_sockif.si_setup(psock, protocol);
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psock->s_sockif = &g_usrsock_sockif;
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}
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else
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#endif /* CONFIG_NET_USRSOCK */
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{
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/* Get the socket interface */
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sockif = net_sockif(domain, type, protocol);
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if (sockif == NULL)
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{
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nerr("ERROR: socket address family unsupported: %d\n", domain);
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return -EAFNOSUPPORT;
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}
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/* The remaining of the socket initialization depends on the address
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* family.
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*/
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DEBUGASSERT(sockif->si_setup != NULL);
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psock->s_sockif = sockif;
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ret = sockif->si_setup(psock, protocol);
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if (ret < 0)
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{
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nerr("ERROR: socket si_setup() failed: %d\n", ret);
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return ret;
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}
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}
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/* The socket has been successfully initialized */
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psock->s_flags |= _SF_INITD;
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return ret;
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}
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#endif /* CONFIG_NET */
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