diff options
Diffstat (limited to 'nuttx/net/net_dup2.c')
-rw-r--r-- | nuttx/net/net_dup2.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/nuttx/net/net_dup2.c b/nuttx/net/net_dup2.c deleted file mode 100644 index 3403a70c3..000000000 --- a/nuttx/net/net_dup2.c +++ /dev/null @@ -1,125 +0,0 @@ -/**************************************************************************** - * net/net_dup2.c - * - * Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * 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/socket.h> -#include <sched.h> -#include <errno.h> -#include <debug.h> - -#include "net_internal.h" - -#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0 - -/**************************************************************************** - * Global Functions - ****************************************************************************/ - -/**************************************************************************** - * Function: net_dup2 - * - * Description: - * Clone a socket descriptor to an arbitray descriptor number. If file - * descriptors are implemented, then this is called by dup2() for the case - * of socket file descriptors. If file descriptors are not implemented, - * then this function IS dup2(). - * - ****************************************************************************/ - -#if CONFIG_NFILE_DESCRIPTORS > 0 -int net_dup2(int sockfd1, int sockfd2) -#else -int dup2(int sockfd1, int sockfd2) -#endif -{ - FAR struct socket *psock1; - FAR struct socket *psock2; - int err; - int ret; - - /* Lock the scheduler throughout the following */ - - sched_lock(); - - /* Get the socket structures underly both descriptors */ - - psock1 = sockfd_socket(sockfd1); - psock2 = sockfd_socket(sockfd2); - - /* Verify that the sockfd1 and sockfd2 both refer to valid socket - * descriptors and that sockfd2 corresponds to allocated socket - */ - - if (!psock1 || !psock2 || psock1->s_crefs <= 0) - { - err = EBADF; - goto errout; - } - - /* If sockfd2 also valid, allocated socket, then we will have to - * close it! - */ - - if (psock2->s_crefs > 0) - { - net_close(sockfd2); - } - - /* Duplicate the socket state */ - - ret = net_clone(psock1, psock2); - if (ret < 0) - { - err = -ret; - goto errout; - } - - sched_unlock(); - return OK; - -errout: - sched_unlock(); - errno = err; - return ERROR; -} - -#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS > 0 */ - - |