diff options
Diffstat (limited to 'nuttx/net/net_dup.c')
-rw-r--r-- | nuttx/net/net_dup.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/nuttx/net/net_dup.c b/nuttx/net/net_dup.c deleted file mode 100644 index 300459544..000000000 --- a/nuttx/net/net_dup.c +++ /dev/null @@ -1,149 +0,0 @@ -/**************************************************************************** - * net/net_dup.c - * - * Copyright (C) 2009 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 - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -/**************************************************************************** - * Global Functions - ****************************************************************************/ - -/**************************************************************************** - * Function: net_dup - * - * Description: - * Clone a socket descriptor to an arbitray descriptor number. If file - * descriptors are implemented, then this is called by dup() for the case - * of socket file descriptors. If file descriptors are not implemented, - * then this function IS dup(). - * - ****************************************************************************/ - -int net_dup(int sockfd, int minsd) -{ - FAR struct socket *psock1 = sockfd_socket(sockfd); - FAR struct socket *psock2; - int sockfd2; - int err; - int ret; - - /* Make sure that the minimum socket descriptor is within the legal range. - * the minimum value we receive is relative to file descriptor 0; we need - * map it relative of the first socket descriptor. - */ - -#if CONFIG_NFILE_DESCRIPTORS > 0 - if (minsd >= CONFIG_NFILE_DESCRIPTORS) - { - minsd -= CONFIG_NFILE_DESCRIPTORS; - } - else - { - minsd = 0; - } -#endif - - /* Lock the scheduler throughout the following */ - - sched_lock(); - - /* Get the socket structure underlying sockfd */ - - psock1 = sockfd_socket(sockfd); - - /* Verify that the sockfd corresponds to valid, allocated socket */ - - if (!psock1 || psock1->s_crefs <= 0) - { - err = EBADF; - goto errout; - } - - /* Allocate a new socket descriptor */ - - sockfd2 = sockfd_allocate(minsd); - if (sockfd2 < 0) - { - err = ENFILE; - goto errout; - } - - /* Get the socket structure underlying the new descriptor */ - - psock2 = sockfd_socket(sockfd2); - if (!psock2) - { - err = ENOSYS; /* should not happen */ - goto errout; - } - - /* Duplicate the socket state */ - - ret = net_clone(psock1, psock2); - if (ret < 0) - { - err = -ret; - goto errout; - - } - - sched_unlock(); - return sockfd2; - -errout: - sched_unlock(); - errno = err; - return ERROR; -} - -#endif /* defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0 */ - - |