char: move win chardev base class in its own file
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Marc-André Lureau
parent
894593afbe
commit
503ebefe0a
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@ -4,3 +4,4 @@ chardev-obj-y += char-io.o
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chardev-obj-y += char-mux.o
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chardev-obj-y += char-null.o
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chardev-obj-y += char-ringbuf.o
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chardev-obj-$(CONFIG_WIN32) += char-win.o
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@ -0,0 +1,265 @@
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/*
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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 "qemu-common.h"
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#include "qapi/error.h"
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#include "char-win.h"
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static void win_chr_readfile(Chardev *chr)
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{
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WinChardev *s = WIN_CHARDEV(chr);
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int ret, err;
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uint8_t buf[CHR_READ_BUF_LEN];
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DWORD size;
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ZeroMemory(&s->orecv, sizeof(s->orecv));
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s->orecv.hEvent = s->hrecv;
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ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
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if (!ret) {
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err = GetLastError();
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if (err == ERROR_IO_PENDING) {
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ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
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}
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}
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if (size > 0) {
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qemu_chr_be_write(chr, buf, size);
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}
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}
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static void win_chr_read(Chardev *chr)
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{
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WinChardev *s = WIN_CHARDEV(chr);
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if (s->len > s->max_size) {
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s->len = s->max_size;
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}
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if (s->len == 0) {
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return;
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}
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win_chr_readfile(chr);
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}
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static int win_chr_read_poll(Chardev *chr)
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{
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WinChardev *s = WIN_CHARDEV(chr);
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s->max_size = qemu_chr_be_can_write(chr);
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return s->max_size;
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}
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static int win_chr_poll(void *opaque)
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{
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Chardev *chr = CHARDEV(opaque);
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WinChardev *s = WIN_CHARDEV(opaque);
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COMSTAT status;
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DWORD comerr;
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ClearCommError(s->hcom, &comerr, &status);
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if (status.cbInQue > 0) {
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s->len = status.cbInQue;
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win_chr_read_poll(chr);
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win_chr_read(chr);
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return 1;
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}
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return 0;
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}
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int win_chr_init(Chardev *chr, const char *filename, Error **errp)
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{
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WinChardev *s = WIN_CHARDEV(chr);
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COMMCONFIG comcfg;
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COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
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COMSTAT comstat;
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DWORD size;
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DWORD err;
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s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
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if (!s->hsend) {
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error_setg(errp, "Failed CreateEvent");
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goto fail;
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}
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s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
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if (!s->hrecv) {
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error_setg(errp, "Failed CreateEvent");
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goto fail;
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}
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s->hcom = CreateFile(filename, GENERIC_READ | GENERIC_WRITE, 0, NULL,
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OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
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if (s->hcom == INVALID_HANDLE_VALUE) {
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error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
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s->hcom = NULL;
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goto fail;
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}
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if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
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error_setg(errp, "Failed SetupComm");
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goto fail;
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}
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ZeroMemory(&comcfg, sizeof(COMMCONFIG));
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size = sizeof(COMMCONFIG);
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GetDefaultCommConfig(filename, &comcfg, &size);
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comcfg.dcb.DCBlength = sizeof(DCB);
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CommConfigDialog(filename, NULL, &comcfg);
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if (!SetCommState(s->hcom, &comcfg.dcb)) {
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error_setg(errp, "Failed SetCommState");
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goto fail;
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}
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if (!SetCommMask(s->hcom, EV_ERR)) {
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error_setg(errp, "Failed SetCommMask");
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goto fail;
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}
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cto.ReadIntervalTimeout = MAXDWORD;
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if (!SetCommTimeouts(s->hcom, &cto)) {
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error_setg(errp, "Failed SetCommTimeouts");
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goto fail;
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}
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if (!ClearCommError(s->hcom, &err, &comstat)) {
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error_setg(errp, "Failed ClearCommError");
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goto fail;
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}
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qemu_add_polling_cb(win_chr_poll, chr);
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return 0;
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fail:
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return -1;
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}
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int win_chr_pipe_poll(void *opaque)
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{
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Chardev *chr = CHARDEV(opaque);
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WinChardev *s = WIN_CHARDEV(opaque);
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DWORD size;
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PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
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if (size > 0) {
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s->len = size;
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win_chr_read_poll(chr);
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win_chr_read(chr);
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return 1;
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}
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return 0;
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}
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/* Called with chr_write_lock held. */
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static int win_chr_write(Chardev *chr, const uint8_t *buf, int len1)
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{
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WinChardev *s = WIN_CHARDEV(chr);
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DWORD len, ret, size, err;
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len = len1;
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ZeroMemory(&s->osend, sizeof(s->osend));
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s->osend.hEvent = s->hsend;
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while (len > 0) {
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if (s->hsend) {
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ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
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} else {
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ret = WriteFile(s->hcom, buf, len, &size, NULL);
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}
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if (!ret) {
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err = GetLastError();
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if (err == ERROR_IO_PENDING) {
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ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
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if (ret) {
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buf += size;
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len -= size;
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} else {
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break;
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}
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} else {
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break;
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}
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} else {
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buf += size;
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len -= size;
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}
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}
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return len1 - len;
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}
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static void char_win_finalize(Object *obj)
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{
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Chardev *chr = CHARDEV(obj);
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WinChardev *s = WIN_CHARDEV(chr);
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if (s->skip_free) {
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return;
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}
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if (s->hsend) {
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CloseHandle(s->hsend);
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}
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if (s->hrecv) {
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CloseHandle(s->hrecv);
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}
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if (s->hcom) {
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CloseHandle(s->hcom);
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}
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if (s->fpipe) {
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qemu_del_polling_cb(win_chr_pipe_poll, chr);
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} else {
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qemu_del_polling_cb(win_chr_poll, chr);
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}
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qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
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}
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void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
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{
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WinChardev *s = WIN_CHARDEV(chr);
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s->skip_free = true;
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s->hcom = fd_out;
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}
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static void char_win_class_init(ObjectClass *oc, void *data)
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{
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ChardevClass *cc = CHARDEV_CLASS(oc);
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cc->chr_write = win_chr_write;
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}
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static const TypeInfo char_win_type_info = {
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.name = TYPE_CHARDEV_WIN,
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.parent = TYPE_CHARDEV,
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.instance_size = sizeof(WinChardev),
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.instance_finalize = char_win_finalize,
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.class_init = char_win_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_type_info);
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}
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type_init(register_types);
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@ -0,0 +1,53 @@
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/*
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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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#ifndef CHAR_WIN_H
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#define CHAR_WIN_H
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#include "sysemu/char.h"
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typedef struct {
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Chardev parent;
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int max_size;
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HANDLE hcom, hrecv, hsend;
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OVERLAPPED orecv;
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BOOL fpipe;
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DWORD len;
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/* Protected by the Chardev chr_write_lock. */
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OVERLAPPED osend;
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/* FIXME: file/console do not finalize */
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bool skip_free;
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} WinChardev;
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#define NSENDBUF 2048
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#define NRECVBUF 2048
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#define TYPE_CHARDEV_WIN "chardev-win"
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#define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
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void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out);
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int win_chr_init(Chardev *chr, const char *filename, Error **errp);
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int win_chr_pipe_poll(void *opaque);
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#endif /* CHAR_WIN_H */
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253
chardev/char.c
253
chardev/char.c
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@ -88,6 +88,9 @@
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#include "char-mux.h"
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#include "char-fd.h"
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#include "char-io.h"
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#ifdef _WIN32
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#include "char-win.h"
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#endif
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#define TCP_MAX_FDS 16
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@ -1471,23 +1474,6 @@ static void qemu_chr_open_pp_fd(Chardev *chr,
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#define HAVE_CHARDEV_SERIAL 1
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typedef struct {
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Chardev parent;
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int max_size;
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HANDLE hcom, hrecv, hsend;
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OVERLAPPED orecv;
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BOOL fpipe;
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DWORD len;
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/* Protected by the Chardev chr_write_lock. */
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OVERLAPPED osend;
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/* FIXME: file/console do not finalize */
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bool skip_free;
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} WinChardev;
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#define TYPE_CHARDEV_WIN "chardev-win"
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#define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
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typedef struct {
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Chardev parent;
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HANDLE hStdIn;
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@ -1501,217 +1487,9 @@ typedef struct {
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#define WIN_STDIO_CHARDEV(obj) \
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OBJECT_CHECK(WinStdioChardev, (obj), TYPE_CHARDEV_WIN_STDIO)
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#define NSENDBUF 2048
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#define NRECVBUF 2048
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#define MAXCONNECT 1
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#define NTIMEOUT 5000
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static int win_chr_poll(void *opaque);
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static int win_chr_pipe_poll(void *opaque);
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static void char_win_finalize(Object *obj)
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{
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Chardev *chr = CHARDEV(obj);
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WinChardev *s = WIN_CHARDEV(chr);
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if (s->skip_free) {
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return;
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}
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if (s->hsend) {
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CloseHandle(s->hsend);
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}
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if (s->hrecv) {
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CloseHandle(s->hrecv);
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}
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if (s->hcom) {
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CloseHandle(s->hcom);
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}
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if (s->fpipe)
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qemu_del_polling_cb(win_chr_pipe_poll, chr);
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else
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qemu_del_polling_cb(win_chr_poll, chr);
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qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
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}
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static int win_chr_init(Chardev *chr, const char *filename, Error **errp)
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{
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WinChardev *s = WIN_CHARDEV(chr);
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COMMCONFIG comcfg;
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COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
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COMSTAT comstat;
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DWORD size;
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DWORD err;
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s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
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if (!s->hsend) {
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error_setg(errp, "Failed CreateEvent");
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goto fail;
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}
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s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
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if (!s->hrecv) {
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error_setg(errp, "Failed CreateEvent");
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goto fail;
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}
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s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
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OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
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if (s->hcom == INVALID_HANDLE_VALUE) {
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error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
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s->hcom = NULL;
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goto fail;
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}
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if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
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error_setg(errp, "Failed SetupComm");
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goto fail;
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}
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ZeroMemory(&comcfg, sizeof(COMMCONFIG));
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size = sizeof(COMMCONFIG);
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GetDefaultCommConfig(filename, &comcfg, &size);
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comcfg.dcb.DCBlength = sizeof(DCB);
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CommConfigDialog(filename, NULL, &comcfg);
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if (!SetCommState(s->hcom, &comcfg.dcb)) {
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error_setg(errp, "Failed SetCommState");
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goto fail;
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}
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if (!SetCommMask(s->hcom, EV_ERR)) {
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error_setg(errp, "Failed SetCommMask");
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goto fail;
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}
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cto.ReadIntervalTimeout = MAXDWORD;
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if (!SetCommTimeouts(s->hcom, &cto)) {
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error_setg(errp, "Failed SetCommTimeouts");
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goto fail;
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}
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if (!ClearCommError(s->hcom, &err, &comstat)) {
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error_setg(errp, "Failed ClearCommError");
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goto fail;
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}
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qemu_add_polling_cb(win_chr_poll, chr);
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return 0;
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fail:
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return -1;
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}
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/* Called with chr_write_lock held. */
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static int win_chr_write(Chardev *chr, const uint8_t *buf, int len1)
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{
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WinChardev *s = WIN_CHARDEV(chr);
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DWORD len, ret, size, err;
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len = len1;
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ZeroMemory(&s->osend, sizeof(s->osend));
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s->osend.hEvent = s->hsend;
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while (len > 0) {
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if (s->hsend)
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ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
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else
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ret = WriteFile(s->hcom, buf, len, &size, NULL);
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if (!ret) {
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err = GetLastError();
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if (err == ERROR_IO_PENDING) {
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ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
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if (ret) {
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buf += size;
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len -= size;
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
buf += size;
|
||||
len -= size;
|
||||
}
|
||||
}
|
||||
return len1 - len;
|
||||
}
|
||||
|
||||
static int win_chr_read_poll(Chardev *chr)
|
||||
{
|
||||
WinChardev *s = WIN_CHARDEV(chr);
|
||||
|
||||
s->max_size = qemu_chr_be_can_write(chr);
|
||||
return s->max_size;
|
||||
}
|
||||
|
||||
static void win_chr_readfile(Chardev *chr)
|
||||
{
|
||||
WinChardev *s = WIN_CHARDEV(chr);
|
||||
|
||||
int ret, err;
|
||||
uint8_t buf[CHR_READ_BUF_LEN];
|
||||
DWORD size;
|
||||
|
||||
ZeroMemory(&s->orecv, sizeof(s->orecv));
|
||||
s->orecv.hEvent = s->hrecv;
|
||||
ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
|
||||
if (!ret) {
|
||||
err = GetLastError();
|
||||
if (err == ERROR_IO_PENDING) {
|
||||
ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
|
||||
}
|
||||
}
|
||||
|
||||
if (size > 0) {
|
||||
qemu_chr_be_write(chr, buf, size);
|
||||
}
|
||||
}
|
||||
|
||||
static void win_chr_read(Chardev *chr)
|
||||
{
|
||||
WinChardev *s = WIN_CHARDEV(chr);
|
||||
|
||||
if (s->len > s->max_size)
|
||||
s->len = s->max_size;
|
||||
if (s->len == 0)
|
||||
return;
|
||||
|
||||
win_chr_readfile(chr);
|
||||
}
|
||||
|
||||
static int win_chr_poll(void *opaque)
|
||||
{
|
||||
Chardev *chr = CHARDEV(opaque);
|
||||
WinChardev *s = WIN_CHARDEV(opaque);
|
||||
COMSTAT status;
|
||||
DWORD comerr;
|
||||
|
||||
ClearCommError(s->hcom, &comerr, &status);
|
||||
if (status.cbInQue > 0) {
|
||||
s->len = status.cbInQue;
|
||||
win_chr_read_poll(chr);
|
||||
win_chr_read(chr);
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int win_chr_pipe_poll(void *opaque)
|
||||
{
|
||||
Chardev *chr = CHARDEV(opaque);
|
||||
WinChardev *s = WIN_CHARDEV(opaque);
|
||||
DWORD size;
|
||||
|
||||
PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
|
||||
if (size > 0) {
|
||||
s->len = size;
|
||||
win_chr_read_poll(chr);
|
||||
win_chr_read(chr);
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int win_chr_pipe_init(Chardev *chr, const char *filename,
|
||||
Error **errp)
|
||||
{
|
||||
|
|
@ -1789,30 +1567,6 @@ static void qemu_chr_open_pipe(Chardev *chr,
|
|||
}
|
||||
}
|
||||
|
||||
static void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
|
||||
{
|
||||
WinChardev *s = WIN_CHARDEV(chr);
|
||||
|
||||
s->skip_free = true;
|
||||
s->hcom = fd_out;
|
||||
}
|
||||
|
||||
static void char_win_class_init(ObjectClass *oc, void *data)
|
||||
{
|
||||
ChardevClass *cc = CHARDEV_CLASS(oc);
|
||||
|
||||
cc->chr_write = win_chr_write;
|
||||
}
|
||||
|
||||
static const TypeInfo char_win_type_info = {
|
||||
.name = TYPE_CHARDEV_WIN,
|
||||
.parent = TYPE_CHARDEV,
|
||||
.instance_size = sizeof(WinChardev),
|
||||
.instance_finalize = char_win_finalize,
|
||||
.class_init = char_win_class_init,
|
||||
.abstract = true,
|
||||
};
|
||||
|
||||
static void qemu_chr_open_win_con(Chardev *chr,
|
||||
ChardevBackend *backend,
|
||||
bool *be_opened,
|
||||
|
|
@ -4202,7 +3956,6 @@ static void register_types(void)
|
|||
{
|
||||
type_register_static(&char_type_info);
|
||||
#ifdef _WIN32
|
||||
type_register_static(&char_win_type_info);
|
||||
type_register_static(&char_win_stdio_type_info);
|
||||
#endif
|
||||
type_register_static(&char_socket_type_info);
|
||||
|
|
|
|||
Loading…
Reference in New Issue