Line | Count | Source (jump to first uncovered line) |
1 | | /* ioctl.c --- wrappers for Windows ioctl function |
2 | | |
3 | | Copyright (C) 2008-2025 Free Software Foundation, Inc. |
4 | | |
5 | | This file is free software: you can redistribute it and/or modify |
6 | | it under the terms of the GNU Lesser General Public License as |
7 | | published by the Free Software Foundation; either version 2.1 of the |
8 | | License, or (at your option) any later version. |
9 | | |
10 | | This file 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 Lesser General Public License for more details. |
14 | | |
15 | | You should have received a copy of the GNU Lesser General Public License |
16 | | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
17 | | |
18 | | /* Written by Paolo Bonzini */ |
19 | | |
20 | | #include <config.h> |
21 | | |
22 | | #include <sys/ioctl.h> |
23 | | |
24 | | #include <stdarg.h> |
25 | | |
26 | | #if HAVE_IOCTL |
27 | | |
28 | | /* Provide a wrapper with the POSIX prototype. */ |
29 | | # undef ioctl |
30 | | int |
31 | | rpl_ioctl (int fd, int request, ... /* {void *,char *} arg */) |
32 | 0 | { |
33 | 0 | void *buf; |
34 | 0 | va_list args; |
35 | |
|
36 | 0 | va_start (args, request); |
37 | 0 | buf = va_arg (args, void *); |
38 | 0 | va_end (args); |
39 | | |
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 | 0 | return ioctl (fd, (unsigned int) request, buf); |
43 | 0 | } |
44 | | |
45 | | #else /* mingw */ |
46 | | |
47 | | # include <errno.h> |
48 | | |
49 | | /* Get HANDLE. */ |
50 | | # define WIN32_LEAN_AND_MEAN |
51 | | # include <windows.h> |
52 | | |
53 | | # include "fd-hook.h" |
54 | | /* Get _get_osfhandle. */ |
55 | | # if GNULIB_MSVC_NOTHROW |
56 | | # include "msvc-nothrow.h" |
57 | | # else |
58 | | # include <io.h> |
59 | | # endif |
60 | | |
61 | | static int |
62 | | primary_ioctl (int fd, int request, void *arg) |
63 | | { |
64 | | /* We don't support FIONBIO on pipes here. If you want to make pipe |
65 | | fds non-blocking, use the gnulib 'nonblocking' module, until |
66 | | gnulib implements fcntl F_GETFL / F_SETFL with O_NONBLOCK. */ |
67 | | |
68 | | if ((HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE) |
69 | | errno = ENOSYS; |
70 | | else |
71 | | errno = EBADF; |
72 | | return -1; |
73 | | } |
74 | | |
75 | | int |
76 | | ioctl (int fd, int request, ... /* {void *,char *} arg */) |
77 | | { |
78 | | void *arg; |
79 | | va_list args; |
80 | | |
81 | | va_start (args, request); |
82 | | arg = va_arg (args, void *); |
83 | | va_end (args); |
84 | | |
85 | | # if WINDOWS_SOCKETS |
86 | | return execute_all_ioctl_hooks (primary_ioctl, fd, request, arg); |
87 | | # else |
88 | | return primary_ioctl (fd, request, arg); |
89 | | # endif |
90 | | } |
91 | | |
92 | | #endif |