Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
Markus Armbruster | 922a01a | 2018-02-01 12:18:46 +0100 | [diff] [blame] | 24 | |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 25 | #include "qemu/osdep.h" |
Markus Armbruster | a8d2532 | 2019-05-23 16:35:08 +0200 | [diff] [blame] | 26 | #include "qemu-common.h" |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 27 | #include "qapi/error.h" |
Markus Armbruster | db72581 | 2019-08-12 07:23:50 +0200 | [diff] [blame] | 28 | #include "qemu/main-loop.h" |
Markus Armbruster | 0b8fa32 | 2019-05-23 16:35:07 +0200 | [diff] [blame] | 29 | #include "qemu/module.h" |
Markus Armbruster | 922a01a | 2018-02-01 12:18:46 +0100 | [diff] [blame] | 30 | #include "qemu/option.h" |
Marc-André Lureau | 8228e35 | 2017-01-26 17:19:46 +0400 | [diff] [blame] | 31 | #include "chardev/char.h" |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 32 | |
| 33 | #ifdef _WIN32 |
Marc-André Lureau | 8228e35 | 2017-01-26 17:19:46 +0400 | [diff] [blame] | 34 | #include "chardev/char-win.h" |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 35 | #else |
Marc-André Lureau | 8228e35 | 2017-01-26 17:19:46 +0400 | [diff] [blame] | 36 | #include "chardev/char-fd.h" |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 37 | #endif |
| 38 | |
| 39 | #ifdef _WIN32 |
| 40 | #define MAXCONNECT 1 |
| 41 | #define NTIMEOUT 5000 |
| 42 | |
| 43 | static int win_chr_pipe_init(Chardev *chr, const char *filename, |
| 44 | Error **errp) |
| 45 | { |
| 46 | WinChardev *s = WIN_CHARDEV(chr); |
| 47 | OVERLAPPED ov; |
| 48 | int ret; |
| 49 | DWORD size; |
| 50 | char *openname; |
| 51 | |
| 52 | s->fpipe = TRUE; |
| 53 | |
| 54 | s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); |
| 55 | if (!s->hsend) { |
| 56 | error_setg(errp, "Failed CreateEvent"); |
| 57 | goto fail; |
| 58 | } |
| 59 | s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); |
| 60 | if (!s->hrecv) { |
| 61 | error_setg(errp, "Failed CreateEvent"); |
| 62 | goto fail; |
| 63 | } |
| 64 | |
| 65 | openname = g_strdup_printf("\\\\.\\pipe\\%s", filename); |
Marc-André Lureau | ef0f272 | 2017-01-04 21:37:01 +0100 | [diff] [blame] | 66 | s->file = CreateNamedPipe(openname, |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 67 | PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, |
| 68 | PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | |
| 69 | PIPE_WAIT, |
| 70 | MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL); |
| 71 | g_free(openname); |
Marc-André Lureau | ef0f272 | 2017-01-04 21:37:01 +0100 | [diff] [blame] | 72 | if (s->file == INVALID_HANDLE_VALUE) { |
Philippe Mathieu-Daudé | 4c23519 | 2020-02-28 11:07:23 +0100 | [diff] [blame] | 73 | error_setg_win32(errp, GetLastError(), "Failed CreateNamedPipe"); |
Marc-André Lureau | ef0f272 | 2017-01-04 21:37:01 +0100 | [diff] [blame] | 74 | s->file = NULL; |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 75 | goto fail; |
| 76 | } |
| 77 | |
| 78 | ZeroMemory(&ov, sizeof(ov)); |
| 79 | ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); |
Marc-André Lureau | ef0f272 | 2017-01-04 21:37:01 +0100 | [diff] [blame] | 80 | ret = ConnectNamedPipe(s->file, &ov); |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 81 | if (ret) { |
| 82 | error_setg(errp, "Failed ConnectNamedPipe"); |
| 83 | goto fail; |
| 84 | } |
| 85 | |
Marc-André Lureau | ef0f272 | 2017-01-04 21:37:01 +0100 | [diff] [blame] | 86 | ret = GetOverlappedResult(s->file, &ov, &size, TRUE); |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 87 | if (!ret) { |
| 88 | error_setg(errp, "Failed GetOverlappedResult"); |
| 89 | if (ov.hEvent) { |
| 90 | CloseHandle(ov.hEvent); |
| 91 | ov.hEvent = NULL; |
| 92 | } |
| 93 | goto fail; |
| 94 | } |
| 95 | |
| 96 | if (ov.hEvent) { |
| 97 | CloseHandle(ov.hEvent); |
| 98 | ov.hEvent = NULL; |
| 99 | } |
| 100 | qemu_add_polling_cb(win_chr_pipe_poll, chr); |
| 101 | return 0; |
| 102 | |
| 103 | fail: |
| 104 | return -1; |
| 105 | } |
| 106 | |
| 107 | static void qemu_chr_open_pipe(Chardev *chr, |
| 108 | ChardevBackend *backend, |
| 109 | bool *be_opened, |
| 110 | Error **errp) |
| 111 | { |
| 112 | ChardevHostdev *opts = backend->u.pipe.data; |
| 113 | const char *filename = opts->device; |
| 114 | |
| 115 | if (win_chr_pipe_init(chr, filename, errp) < 0) { |
| 116 | return; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | #else |
| 121 | |
| 122 | static void qemu_chr_open_pipe(Chardev *chr, |
| 123 | ChardevBackend *backend, |
| 124 | bool *be_opened, |
| 125 | Error **errp) |
| 126 | { |
| 127 | ChardevHostdev *opts = backend->u.pipe.data; |
| 128 | int fd_in, fd_out; |
| 129 | char *filename_in; |
| 130 | char *filename_out; |
| 131 | const char *filename = opts->device; |
| 132 | |
| 133 | filename_in = g_strdup_printf("%s.in", filename); |
| 134 | filename_out = g_strdup_printf("%s.out", filename); |
Daniel P. Berrangé | 448058a | 2020-07-21 13:25:21 +0100 | [diff] [blame] | 135 | TFR(fd_in = qemu_open_old(filename_in, O_RDWR | O_BINARY)); |
| 136 | TFR(fd_out = qemu_open_old(filename_out, O_RDWR | O_BINARY)); |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 137 | g_free(filename_in); |
| 138 | g_free(filename_out); |
| 139 | if (fd_in < 0 || fd_out < 0) { |
| 140 | if (fd_in >= 0) { |
| 141 | close(fd_in); |
| 142 | } |
| 143 | if (fd_out >= 0) { |
| 144 | close(fd_out); |
| 145 | } |
Daniel P. Berrangé | 448058a | 2020-07-21 13:25:21 +0100 | [diff] [blame] | 146 | TFR(fd_in = fd_out = qemu_open_old(filename, O_RDWR | O_BINARY)); |
Marc-André Lureau | 1fcb384 | 2016-12-12 19:06:35 +0300 | [diff] [blame] | 147 | if (fd_in < 0) { |
| 148 | error_setg_file_open(errp, errno, filename); |
| 149 | return; |
| 150 | } |
| 151 | } |
| 152 | qemu_chr_open_fd(chr, fd_in, fd_out); |
| 153 | } |
| 154 | |
| 155 | #endif /* !_WIN32 */ |
| 156 | |
| 157 | static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, |
| 158 | Error **errp) |
| 159 | { |
| 160 | const char *device = qemu_opt_get(opts, "path"); |
| 161 | ChardevHostdev *dev; |
| 162 | |
| 163 | if (device == NULL) { |
| 164 | error_setg(errp, "chardev: pipe: no device path given"); |
| 165 | return; |
| 166 | } |
| 167 | backend->type = CHARDEV_BACKEND_KIND_PIPE; |
| 168 | dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1); |
| 169 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev)); |
| 170 | dev->device = g_strdup(device); |
| 171 | } |
| 172 | |
| 173 | static void char_pipe_class_init(ObjectClass *oc, void *data) |
| 174 | { |
| 175 | ChardevClass *cc = CHARDEV_CLASS(oc); |
| 176 | |
| 177 | cc->parse = qemu_chr_parse_pipe; |
| 178 | cc->open = qemu_chr_open_pipe; |
| 179 | } |
| 180 | |
| 181 | static const TypeInfo char_pipe_type_info = { |
| 182 | .name = TYPE_CHARDEV_PIPE, |
| 183 | #ifdef _WIN32 |
| 184 | .parent = TYPE_CHARDEV_WIN, |
| 185 | #else |
| 186 | .parent = TYPE_CHARDEV_FD, |
| 187 | #endif |
| 188 | .class_init = char_pipe_class_init, |
| 189 | }; |
| 190 | |
| 191 | static void register_types(void) |
| 192 | { |
| 193 | type_register_static(&char_pipe_type_info); |
| 194 | } |
| 195 | |
| 196 | type_init(register_types); |