/* * QEMU System Emulator * * Copyright (c) 2003-2008 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/module.h" #include "qemu/option.h" #include "chardev/char.h" #ifdef _WIN32 #include "chardev/char-win.h" #else #include "chardev/char-fd.h" #endif #ifdef _WIN32 #define MAXCONNECT 1 #define NTIMEOUT 5000 static int win_chr_pipe_init(Chardev *chr, const char *filename, Error **errp) { WinChardev *s = WIN_CHARDEV(chr); OVERLAPPED ov; int ret; DWORD size; char *openname; s->fpipe = TRUE; s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); if (!s->hsend) { error_setg(errp, "Failed CreateEvent"); goto fail; } s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); if (!s->hrecv) { error_setg(errp, "Failed CreateEvent"); goto fail; } openname = g_strdup_printf("\\\\.\\pipe\\%s", filename); s->file = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT, MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL); g_free(openname); if (s->file == INVALID_HANDLE_VALUE) { error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError()); s->file = NULL; goto fail; } ZeroMemory(&ov, sizeof(ov)); ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); ret = ConnectNamedPipe(s->file, &ov); if (ret) { error_setg(errp, "Failed ConnectNamedPipe"); goto fail; } ret = GetOverlappedResult(s->file, &ov, &size, TRUE); if (!ret) { error_setg(errp, "Failed GetOverlappedResult"); if (ov.hEvent) { CloseHandle(ov.hEvent); ov.hEvent = NULL; } goto fail; } if (ov.hEvent) { CloseHandle(ov.hEvent); ov.hEvent = NULL; } qemu_add_polling_cb(win_chr_pipe_poll, chr); return 0; fail: return -1; } static void qemu_chr_open_pipe(Chardev *chr, ChardevBackend *backend, bool *be_opened, Error **errp) { ChardevHostdev *opts = backend->u.pipe.data; const char *filename = opts->device; if (win_chr_pipe_init(chr, filename, errp) < 0) { return; } } #else static void qemu_chr_open_pipe(Chardev *chr, ChardevBackend *backend, bool *be_opened, Error **errp) { ChardevHostdev *opts = backend->u.pipe.data; int fd_in, fd_out; char *filename_in; char *filename_out; const char *filename = opts->device; filename_in = g_strdup_printf("%s.in", filename); filename_out = g_strdup_printf("%s.out", filename); TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY)); TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY)); g_free(filename_in); g_free(filename_out); if (fd_in < 0 || fd_out < 0) { if (fd_in >= 0) { close(fd_in); } if (fd_out >= 0) { close(fd_out); } TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY)); if (fd_in < 0) { error_setg_file_open(errp, errno, filename); return; } } qemu_chr_open_fd(chr, fd_in, fd_out); } #endif /* !_WIN32 */ static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, Error **errp) { const char *device = qemu_opt_get(opts, "path"); ChardevHostdev *dev; if (device == NULL) { error_setg(errp, "chardev: pipe: no device path given"); return; } backend->type = CHARDEV_BACKEND_KIND_PIPE; dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1); qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev)); dev->device = g_strdup(device); } static void char_pipe_class_init(ObjectClass *oc, void *data) { ChardevClass *cc = CHARDEV_CLASS(oc); cc->parse = qemu_chr_parse_pipe; cc->open = qemu_chr_open_pipe; } static const TypeInfo char_pipe_type_info = { .name = TYPE_CHARDEV_PIPE, #ifdef _WIN32 .parent = TYPE_CHARDEV_WIN, #else .parent = TYPE_CHARDEV_FD, #endif .class_init = char_pipe_class_init, }; static void register_types(void) { type_register_static(&char_pipe_type_info); } type_init(register_types);