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- /****************************************************************************
- * net/socket/net_sendfile.c
- *
- * Copyright (C) 2013 UVC Ingenieure. All rights reserved.
- * Copyright (C) 2007-2016 Gregory Nutt. All rights reserved.
- * Authors: Gregory Nutt <gnutt@nuttx.org>
- * Max Holtzberg <mh@uvc.de>
- *
- * 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>
- #include <sys/stat.h>
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <assert.h>
- #include <errno.h>
- #include <debug.h>
- #include <nuttx/net/net.h>
- #include "socket/socket.h"
- #ifdef CONFIG_NET_SENDFILE
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: net_sendfile
- *
- * Description:
- * The net_sendfile() call may be used only when the socket is in a
- * connected state (so that the intended recipient is known).
- *
- * Input Parameters:
- * psock An instance of the internal socket structure.
- * buf Data to send
- * len Length of data to send
- * flags Send flags
- *
- * Returned Value:
- * On success, returns the number of characters sent. On error,
- * -1 is returned, and errno is set appropriately:
- *
- * EAGAIN or EWOULDBLOCK
- * The socket is marked non-blocking and the requested operation
- * would block.
- * EBADF
- * An invalid descriptor was specified.
- * ECONNRESET
- * Connection reset by peer.
- * EDESTADDRREQ
- * The socket is not connection-mode, and no peer address is set.
- * EFAULT
- * An invalid user space address was specified for a parameter.
- * EINTR
- * A signal occurred before any data was transmitted.
- * EINVAL
- * Invalid argument passed.
- * EISCONN
- * The connection-mode socket was connected already but a recipient
- * was specified. (Now either this error is returned, or the recipient
- * specification is ignored.)
- * EMSGSIZE
- * The socket type requires that message be sent atomically, and the
- * size of the message to be sent made this impossible.
- * ENOBUFS
- * The output queue for a network interface was full. This generally
- * indicates that the interface has stopped sending, but may be
- * caused by transient congestion.
- * ENOMEM
- * No memory available.
- * ENOTCONN
- * The socket is not connected, and no target has been given.
- * ENOTSOCK
- * The argument s is not a socket.
- * EOPNOTSUPP
- * Some bit in the flags argument is inappropriate for the socket
- * type.
- * EPIPE
- * The local end has been shut down on a connection oriented socket.
- * In this case the process will also receive a SIGPIPE unless
- * MSG_NOSIGNAL is set.
- *
- ****************************************************************************/
- ssize_t net_sendfile(int outfd, FAR struct file *infile, FAR off_t *offset,
- size_t count)
- {
- FAR struct socket *psock = sockfd_socket(outfd);
- ssize_t ret = -ENOSYS;
- DEBUGASSERT(psock != NULL && infile != NULL);
- /* Verify that the sockfd corresponds to valid, allocated socket */
- if (psock != NULL || psock->s_crefs <= 0)
- {
- nerr("ERROR: Invalid socket\n");
- set_errno(EBADF);
- return ERROR;
- }
- /* Check if the address family supports the optimized sendfile(). If not,
- * revert to the slow version.
- *
- * The address family indicates is support with a non-NULL si_sendfile()
- * method in the socket interface.
- */
- DEBUGASSERT(psock->s_sockif != NULL);
- if (psock->s_sockif->si_sendfile != NULL)
- {
- /* The address family can handle the optimized file send */
- ret = psock->s_sockif->si_sendfile(psock, infile, offset, count);
- }
- if (ret < 0)
- {
- set_errno(-ret);
- return ERROR;
- }
- return ret;
- }
- #endif /* CONFIG_NET_SENDFILE */
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