140 lines
4.6 KiB
C
140 lines
4.6 KiB
C
/****************************************************************************
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* net/socket/net_sendfile.c
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*
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* SPDX-License-Identifier: Apache-2.0
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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/stat.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <assert.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/net/net.h>
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#include "socket/socket.h"
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#ifdef CONFIG_NET_SENDFILE
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: psock_sendfile
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*
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* Description:
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* The psock_sendfile() call may be used only when the socket is in a
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* connected state (so that the intended recipient is known).
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*
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* Input 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
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*
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* Returned Value:
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* On success, returns the number of characters sent. On error,
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* the negative errno is returned appropriately:
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*
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* EAGAIN or EWOULDBLOCK
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* The socket is marked non-blocking and the requested operation
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* would block.
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* EBADF
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* An invalid descriptor was specified.
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* ECONNRESET
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* Connection reset by peer.
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* EDESTADDRREQ
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* The socket is not connection-mode, and no peer address is set.
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* EFAULT
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* An invalid user space address was specified for a parameter.
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* EINTR
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* A signal occurred before any data was transmitted.
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* EINVAL
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* Invalid argument passed.
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* EISCONN
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* The connection-mode socket was connected already but a recipient
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* was specified. (Now either this error is returned, or the recipient
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* specification is ignored.)
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* EMSGSIZE
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* The socket type requires that message be sent atomically, and the
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* size of the message to be sent made this impossible.
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* ENOBUFS
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* The output queue for a network interface was full. This generally
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* indicates that the interface has stopped sending, but may be
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* caused by transient congestion.
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* ENOMEM
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* No memory available.
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* ENOTCONN
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* The socket is not connected, and no target has been given.
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* ENOTSOCK
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* The argument s is not a socket.
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* EOPNOTSUPP
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* Some bit in the flags argument is inappropriate for the socket
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* type.
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* EPIPE
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* The local end has been shut down on a connection oriented socket.
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* In this case the process will also receive a SIGPIPE unless
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* MSG_NOSIGNAL is set.
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*
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****************************************************************************/
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ssize_t psock_sendfile(FAR struct socket *psock, FAR struct file *infile,
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FAR off_t *offset, size_t count)
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{
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ssize_t ret = -ENOSYS;
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DEBUGASSERT(psock != NULL && infile != NULL);
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/* Verify that the sockfd corresponds to valid, allocated socket */
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if (psock == NULL || psock->s_conn == NULL)
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{
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nerr("ERROR: Invalid socket\n");
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return -EBADF;
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}
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/* Check if the address family supports the optimized sendfile(). If not,
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* revert to the slow version.
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*
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* The address family indicates is support with a non-NULL si_sendfile()
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* method in the socket interface.
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*/
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DEBUGASSERT(psock->s_sockif != NULL);
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if (psock->s_sockif->si_sendfile != NULL)
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{
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/* The address family can handle the optimized file send */
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ret = psock->s_sockif->si_sendfile(psock, infile, offset, count);
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}
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return ret;
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}
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#endif /* CONFIG_NET_SENDFILE */
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