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278 lines
8.0 KiB
C
278 lines
8.0 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu/main-loop.h"
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#include "qemu/module.h"
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#include "chardev/char-win.h"
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#include "chardev/char-win-stdio.h"
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#include "qom/object.h"
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struct WinStdioChardev {
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Chardev parent;
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HANDLE hStdIn;
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HANDLE hInputReadyEvent;
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HANDLE hInputDoneEvent;
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HANDLE hInputThread;
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uint8_t win_stdio_buf;
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};
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typedef struct WinStdioChardev WinStdioChardev;
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DECLARE_INSTANCE_CHECKER(WinStdioChardev, WIN_STDIO_CHARDEV,
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TYPE_CHARDEV_WIN_STDIO)
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static void win_stdio_wait_func(void *opaque)
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{
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Chardev *chr = CHARDEV(opaque);
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WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
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INPUT_RECORD buf[4];
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int ret;
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DWORD dwSize;
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int i;
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ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
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if (!ret) {
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/* Avoid error storm */
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qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
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return;
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}
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for (i = 0; i < dwSize; i++) {
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KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
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if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
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int j;
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if (kev->uChar.AsciiChar != 0) {
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for (j = 0; j < kev->wRepeatCount; j++) {
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if (qemu_chr_be_can_write(chr)) {
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uint8_t c = kev->uChar.AsciiChar;
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qemu_chr_be_write(chr, &c, 1);
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}
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}
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}
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}
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}
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}
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static DWORD WINAPI win_stdio_thread(LPVOID param)
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{
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WinStdioChardev *stdio = WIN_STDIO_CHARDEV(param);
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int ret;
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DWORD dwSize;
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while (1) {
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/* Wait for one byte */
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ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
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/* Exit in case of error, continue if nothing read */
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if (!ret) {
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break;
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}
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if (!dwSize) {
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continue;
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}
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/* Some terminal emulator returns \r\n for Enter, just pass \n */
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if (stdio->win_stdio_buf == '\r') {
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continue;
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}
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/* Signal the main thread and wait until the byte was eaten */
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if (!SetEvent(stdio->hInputReadyEvent)) {
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break;
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}
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if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
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!= WAIT_OBJECT_0) {
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break;
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}
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}
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qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
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return 0;
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}
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static void win_stdio_thread_wait_func(void *opaque)
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{
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Chardev *chr = CHARDEV(opaque);
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WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
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if (qemu_chr_be_can_write(chr)) {
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qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
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}
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SetEvent(stdio->hInputDoneEvent);
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}
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static void qemu_chr_set_echo_win_stdio(Chardev *chr, bool echo)
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{
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WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
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DWORD dwMode = 0;
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GetConsoleMode(stdio->hStdIn, &dwMode);
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if (echo) {
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SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
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} else {
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SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
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}
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}
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static void qemu_chr_open_stdio(Chardev *chr,
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ChardevBackend *backend,
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bool *be_opened,
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Error **errp)
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{
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ChardevStdio *opts = backend->u.stdio.data;
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bool stdio_allow_signal = !opts->has_signal || opts->signal;
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WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
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DWORD dwMode;
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int is_console = 0;
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stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
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if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
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error_setg(errp, "cannot open stdio: invalid handle");
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return;
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}
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is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
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if (is_console) {
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if (qemu_add_wait_object(stdio->hStdIn,
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win_stdio_wait_func, chr)) {
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error_setg(errp, "qemu_add_wait_object: failed");
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goto err1;
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}
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} else {
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DWORD dwId;
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stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
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stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
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if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
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|| stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
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error_setg(errp, "cannot create event");
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goto err2;
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}
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if (qemu_add_wait_object(stdio->hInputReadyEvent,
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win_stdio_thread_wait_func, chr)) {
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error_setg(errp, "qemu_add_wait_object: failed");
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goto err2;
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}
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stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
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chr, 0, &dwId);
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if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
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error_setg(errp, "cannot create stdio thread");
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goto err3;
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}
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}
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dwMode |= ENABLE_LINE_INPUT;
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if (is_console) {
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/* set the terminal in raw mode */
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/* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
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if (stdio_allow_signal) {
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dwMode |= ENABLE_PROCESSED_INPUT;
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} else {
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dwMode &= ~ENABLE_PROCESSED_INPUT;
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}
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}
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SetConsoleMode(stdio->hStdIn, dwMode);
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qemu_chr_set_echo_win_stdio(chr, false);
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return;
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err3:
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qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
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err2:
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CloseHandle(stdio->hInputReadyEvent);
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CloseHandle(stdio->hInputDoneEvent);
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err1:
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qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
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}
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static void char_win_stdio_finalize(Object *obj)
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{
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WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj);
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if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
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CloseHandle(stdio->hInputReadyEvent);
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}
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if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
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CloseHandle(stdio->hInputDoneEvent);
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}
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if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
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TerminateThread(stdio->hInputThread, 0);
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}
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}
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static int win_stdio_write(Chardev *chr, const uint8_t *buf, int len)
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{
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HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
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DWORD dwSize;
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int len1;
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len1 = len;
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while (len1 > 0) {
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if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
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break;
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}
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buf += dwSize;
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len1 -= dwSize;
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}
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return len - len1;
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}
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static void char_win_stdio_class_init(ObjectClass *oc, void *data)
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{
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ChardevClass *cc = CHARDEV_CLASS(oc);
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cc->open = qemu_chr_open_stdio;
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cc->chr_write = win_stdio_write;
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cc->chr_set_echo = qemu_chr_set_echo_win_stdio;
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}
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static const TypeInfo char_win_stdio_type_info = {
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.name = TYPE_CHARDEV_WIN_STDIO,
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.parent = TYPE_CHARDEV,
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.instance_size = sizeof(WinStdioChardev),
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.instance_finalize = char_win_stdio_finalize,
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.class_init = char_win_stdio_class_init,
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.abstract = true,
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};
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static void register_types(void)
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{
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type_register_static(&char_win_stdio_type_info);
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}
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type_init(register_types);
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