diff options
Diffstat (limited to 'lib/libc_r/uthread/uthread_dup2.c')
| -rw-r--r-- | lib/libc_r/uthread/uthread_dup2.c | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/lib/libc_r/uthread/uthread_dup2.c b/lib/libc_r/uthread/uthread_dup2.c deleted file mode 100644 index 0508361..0000000 --- a/lib/libc_r/uthread/uthread_dup2.c +++ /dev/null @@ -1,95 +0,0 @@ -/* - * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> - * All rights reserved. - * - * 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 of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL 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 AUTHOR 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. - * - * $FreeBSD$ - */ -#include <errno.h> -#include <unistd.h> -#include <pthread.h> -#include "pthread_private.h" - -__weak_reference(_dup2, dup2); - -int -_dup2(int fd, int newfd) -{ - int ret; - int newfd_opened; - - /* Check if the file descriptor is out of range: */ - if (newfd < 0 || newfd >= _thread_dtablesize || - newfd == _thread_kern_pipe[0] || newfd == _thread_kern_pipe[1]) { - /* Return a bad file descriptor error: */ - errno = EBADF; - ret = -1; - } - - /* Lock the file descriptor: */ - else if ((ret = _FD_LOCK(fd, FD_RDWR, NULL)) == 0) { - /* Lock the file descriptor: */ - if (!(newfd_opened = (_thread_fd_table[newfd] != NULL)) || - (ret = _FD_LOCK(newfd, FD_RDWR, NULL)) == 0) { - /* Perform the 'dup2' syscall: */ - ret = __sys_dup2(fd, newfd); - if (ret >= 0) { - /* - * If we are duplicating one of the standard - * file descriptors, update its flags in the - * table of pthread stdio descriptor flags. - */ - if (ret < 3) { - _pthread_stdio_flags[ret] = - _thread_fd_table[fd]->flags; - } - /* Initialise the file descriptor table entry */ - if (_thread_fd_table_init(ret) != 0) { - /* Quietly close the file: */ - __sys_close(ret); - - /* Reset the file descriptor: */ - ret = -1; - } else { - /* - * Save the file open flags so that - * they can be checked later: - */ - _thread_fd_setflags(ret, - _thread_fd_getflags(fd)); - } - } - - /* Unlock the file descriptor: */ - if (newfd_opened) - _FD_UNLOCK(newfd, FD_RDWR); - } - /* Unlock the file descriptor: */ - _FD_UNLOCK(fd, FD_RDWR); - } - /* Return the completion status: */ - return (ret); -} |
