/* Copyright (C) 2008, 2011 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <errno.h> #include <fcntl.h> #include <unistd.h> /* Duplicate FD to FD2, closing the old FD2 and making FD2 be open the same file as FD is which setting flags according to FLAGS. Return FD2 or -1. */ int __dup3 (fd, fd2, flags) int fd; int fd2; int flags; { if (fd < 0 || fd2 < 0) { __set_errno (EBADF); return -1; } if (fd == fd2) /* No way to check that they are valid. */ return fd2; __set_errno (ENOSYS); return -1; } libc_hidden_def (__dup3) weak_alias (__dup3, dup3) stub_warning (dup3) #include <stub-tag.h>