diff options
Diffstat (limited to 'nuttx/fs/fs_filedup.c')
-rw-r--r-- | nuttx/fs/fs_filedup.c | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/nuttx/fs/fs_filedup.c b/nuttx/fs/fs_filedup.c deleted file mode 100644 index b7eeb7add..000000000 --- a/nuttx/fs/fs_filedup.c +++ /dev/null @@ -1,122 +0,0 @@ -/**************************************************************************** - * fs/fs_filedup.c - * - * Copyright (C) 2007-2009, 2011-2012 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 <sched.h> -#include <errno.h> - -#include <nuttx/fs/fs.h> - -#include "fs_internal.h" - -#if CONFIG_NFILE_DESCRIPTORS > 0 - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -#define DUP_ISOPEN(fd, list) \ - ((unsigned int)fd < CONFIG_NFILE_DESCRIPTORS && \ - list->fl_files[fd].f_inode != NULL) - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Global Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: file_dup OR dup - * - * Description: - * Clone a file descriptor 'fd' to an arbitray descriptor number (any value - * greater than or equal to 'minfd'). If socket descriptors are - * implemented, then this is called by dup() for the case of file - * descriptors. If socket descriptors are not implemented, then this - * function IS dup(). - * - ****************************************************************************/ - -int file_dup(int fildes, int minfd) -{ - FAR struct filelist *list; - int fildes2; - - /* Get the thread-specific file list */ - - list = sched_getfiles(); - if (!list) - { - set_errno(EMFILE); - return ERROR; - } - - /* Verify that fildes is a valid, open file descriptor */ - - if (!DUP_ISOPEN(fildes, list)) - { - set_errno(EBADF); - return ERROR; - } - - /* Increment the reference count on the contained inode */ - - inode_addref(list->fl_files[fildes].f_inode); - - /* Then allocate a new file descriptor for the inode */ - - fildes2 = files_allocate(list->fl_files[fildes].f_inode, - list->fl_files[fildes].f_oflags, - list->fl_files[fildes].f_pos, - minfd); - if (fildes2 < 0) - { - set_errno(EMFILE); - inode_release(list->fl_files[fildes].f_inode); - return ERROR; - } - - return fildes2; -} - -#endif /* CONFIG_NFILE_DESCRIPTORS > 0 */ - |