1 /* ioctl.c --- wrappers for Windows ioctl function
3 Copyright (C) 2008-2016 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 /* Written by Paolo Bonzini */
22 #include <sys/ioctl.h>
28 /* Provide a wrapper with the POSIX prototype. */
31 rpl_ioctl (int fd, int request, ... /* {void *,char *} arg */)
36 va_start (args, request);
37 buf = va_arg (args, void *);
40 /* Cast 'request' so that when the system's ioctl function takes a 64-bit
41 request argument, the value gets zero-extended, not sign-extended. */
42 return ioctl (fd, (unsigned int) request, buf);
50 # define WIN32_LEAN_AND_MEAN
54 /* Get _get_osfhandle. */
55 # include "msvc-nothrow.h"
58 primary_ioctl (int fd, int request, void *arg)
60 /* We don't support FIONBIO on pipes here. If you want to make pipe
61 fds non-blocking, use the gnulib 'nonblocking' module, until
62 gnulib implements fcntl F_GETFL / F_SETFL with O_NONBLOCK. */
64 if ((HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE)
72 ioctl (int fd, int request, ... /* {void *,char *} arg */)
77 va_start (args, request);
78 arg = va_arg (args, void *);
82 return execute_all_ioctl_hooks (primary_ioctl, fd, request, arg);
84 return primary_ioctl (fd, request, arg);