mirror of https://gitee.com/openkylin/wget.git
93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
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/* ioctl.c --- wrappers for Windows ioctl function
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Copyright (C) 2008-2019 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Paolo Bonzini */
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#include <config.h>
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#include <sys/ioctl.h>
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#include <stdarg.h>
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#if HAVE_IOCTL
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/* Provide a wrapper with the POSIX prototype. */
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# undef ioctl
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int
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rpl_ioctl (int fd, int request, ... /* {void *,char *} arg */)
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{
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void *buf;
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va_list args;
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va_start (args, request);
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buf = va_arg (args, void *);
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va_end (args);
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/* Cast 'request' so that when the system's ioctl function takes a 64-bit
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request argument, the value gets zero-extended, not sign-extended. */
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return ioctl (fd, (unsigned int) request, buf);
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}
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#else /* mingw */
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# include <errno.h>
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/* Get HANDLE. */
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# define WIN32_LEAN_AND_MEAN
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# include <windows.h>
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# include "fd-hook.h"
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/* Get _get_osfhandle. */
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# if GNULIB_MSVC_NOTHROW
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# include "msvc-nothrow.h"
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# else
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# include <io.h>
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# endif
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static int
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primary_ioctl (int fd, int request, void *arg)
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{
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/* We don't support FIONBIO on pipes here. If you want to make pipe
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fds non-blocking, use the gnulib 'nonblocking' module, until
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gnulib implements fcntl F_GETFL / F_SETFL with O_NONBLOCK. */
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if ((HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE)
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errno = ENOSYS;
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else
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errno = EBADF;
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return -1;
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}
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int
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ioctl (int fd, int request, ... /* {void *,char *} arg */)
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{
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void *arg;
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va_list args;
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va_start (args, request);
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arg = va_arg (args, void *);
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va_end (args);
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# if WINDOWS_SOCKETS
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return execute_all_ioctl_hooks (primary_ioctl, fd, request, arg);
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# else
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return primary_ioctl (fd, request, arg);
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# endif
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}
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#endif
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