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-rw-r--r--chardev/char-win-stdio.c266
1 files changed, 266 insertions, 0 deletions
diff --git a/chardev/char-win-stdio.c b/chardev/char-win-stdio.c
new file mode 100644
index 0000000000..eb44afc17a
--- /dev/null
+++ b/chardev/char-win-stdio.c
@@ -0,0 +1,266 @@
+/*
+ * 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 "char-win.h"
+#include "char-win-stdio.h"
+
+typedef struct {
+ Chardev parent;
+ HANDLE hStdIn;
+ HANDLE hInputReadyEvent;
+ HANDLE hInputDoneEvent;
+ HANDLE hInputThread;
+ uint8_t win_stdio_buf;
+} WinStdioChardev;
+
+#define WIN_STDIO_CHARDEV(obj) \
+ OBJECT_CHECK(WinStdioChardev, (obj), TYPE_CHARDEV_WIN_STDIO)
+
+static void win_stdio_wait_func(void *opaque)
+{
+ Chardev *chr = CHARDEV(opaque);
+ WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
+ INPUT_RECORD buf[4];
+ int ret;
+ DWORD dwSize;
+ int i;
+
+ ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
+
+ if (!ret) {
+ /* Avoid error storm */
+ qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
+ return;
+ }
+
+ for (i = 0; i < dwSize; i++) {
+ KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
+
+ if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
+ int j;
+ if (kev->uChar.AsciiChar != 0) {
+ for (j = 0; j < kev->wRepeatCount; j++) {
+ if (qemu_chr_be_can_write(chr)) {
+ uint8_t c = kev->uChar.AsciiChar;
+ qemu_chr_be_write(chr, &c, 1);
+ }
+ }
+ }
+ }
+ }
+}
+
+static DWORD WINAPI win_stdio_thread(LPVOID param)
+{
+ WinStdioChardev *stdio = WIN_STDIO_CHARDEV(param);
+ int ret;
+ DWORD dwSize;
+
+ while (1) {
+
+ /* Wait for one byte */
+ ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
+
+ /* Exit in case of error, continue if nothing read */
+ if (!ret) {
+ break;
+ }
+ if (!dwSize) {
+ continue;
+ }
+
+ /* Some terminal emulator returns \r\n for Enter, just pass \n */
+ if (stdio->win_stdio_buf == '\r') {
+ continue;
+ }
+
+ /* Signal the main thread and wait until the byte was eaten */
+ if (!SetEvent(stdio->hInputReadyEvent)) {
+ break;
+ }
+ if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
+ != WAIT_OBJECT_0) {
+ break;
+ }
+ }
+
+ qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
+ return 0;
+}
+
+static void win_stdio_thread_wait_func(void *opaque)
+{
+ Chardev *chr = CHARDEV(opaque);
+ WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque);
+
+ if (qemu_chr_be_can_write(chr)) {
+ qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
+ }
+
+ SetEvent(stdio->hInputDoneEvent);
+}
+
+static void qemu_chr_set_echo_win_stdio(Chardev *chr, bool echo)
+{
+ WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
+ DWORD dwMode = 0;
+
+ GetConsoleMode(stdio->hStdIn, &dwMode);
+
+ if (echo) {
+ SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
+ } else {
+ SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
+ }
+}
+
+static void qemu_chr_open_stdio(Chardev *chr,
+ ChardevBackend *backend,
+ bool *be_opened,
+ Error **errp)
+{
+ WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr);
+ DWORD dwMode;
+ int is_console = 0;
+
+ stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
+ if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
+ error_setg(errp, "cannot open stdio: invalid handle");
+ return;
+ }
+
+ is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
+
+ if (is_console) {
+ if (qemu_add_wait_object(stdio->hStdIn,
+ win_stdio_wait_func, chr)) {
+ error_setg(errp, "qemu_add_wait_object: failed");
+ goto err1;
+ }
+ } else {
+ DWORD dwId;
+
+ stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+ stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+ if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
+ || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
+ error_setg(errp, "cannot create event");
+ goto err2;
+ }
+ if (qemu_add_wait_object(stdio->hInputReadyEvent,
+ win_stdio_thread_wait_func, chr)) {
+ error_setg(errp, "qemu_add_wait_object: failed");
+ goto err2;
+ }
+ stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
+ chr, 0, &dwId);
+
+ if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
+ error_setg(errp, "cannot create stdio thread");
+ goto err3;
+ }
+ }
+
+ dwMode |= ENABLE_LINE_INPUT;
+
+ if (is_console) {
+ /* set the terminal in raw mode */
+ /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
+ dwMode |= ENABLE_PROCESSED_INPUT;
+ }
+
+ SetConsoleMode(stdio->hStdIn, dwMode);
+
+ qemu_chr_set_echo_win_stdio(chr, false);
+
+ return;
+
+err3:
+ qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
+err2:
+ CloseHandle(stdio->hInputReadyEvent);
+ CloseHandle(stdio->hInputDoneEvent);
+err1:
+ qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
+}
+
+static void char_win_stdio_finalize(Object *obj)
+{
+ WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj);
+
+ if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
+ CloseHandle(stdio->hInputReadyEvent);
+ }
+ if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
+ CloseHandle(stdio->hInputDoneEvent);
+ }
+ if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
+ TerminateThread(stdio->hInputThread, 0);
+ }
+}
+
+static int win_stdio_write(Chardev *chr, const uint8_t *buf, int len)
+{
+ HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
+ DWORD dwSize;
+ int len1;
+
+ len1 = len;
+
+ while (len1 > 0) {
+ if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
+ break;
+ }
+ buf += dwSize;
+ len1 -= dwSize;
+ }
+
+ return len - len1;
+}
+
+static void char_win_stdio_class_init(ObjectClass *oc, void *data)
+{
+ ChardevClass *cc = CHARDEV_CLASS(oc);
+
+ cc->open = qemu_chr_open_stdio;
+ cc->chr_write = win_stdio_write;
+ cc->chr_set_echo = qemu_chr_set_echo_win_stdio;
+}
+
+static const TypeInfo char_win_stdio_type_info = {
+ .name = TYPE_CHARDEV_WIN_STDIO,
+ .parent = TYPE_CHARDEV,
+ .instance_size = sizeof(WinStdioChardev),
+ .instance_finalize = char_win_stdio_finalize,
+ .class_init = char_win_stdio_class_init,
+ .abstract = true,
+};
+
+static void register_types(void)
+{
+ type_register_static(&char_win_stdio_type_info);
+}
+
+type_init(register_types);