5 files changed, 362 insertions, 362 deletions
diff --git a/vdservice/pci_vdi_port.cpp b/vdservice/pci_vdi_port.cpp
index b055c5a..d07eab7 100644
--- a/vdservice/pci_vdi_port.cpp
+++ b/vdservice/pci_vdi_port.cpp
@@ -1,128 +1,128 @@
-/*
-   Copyright (C) 2009 Red Hat, Inc.
-
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the GNU General Public License as
-   published by the Free Software Foundation; either version 2 of
-   the License, or (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "stdio.h"
-#include "pci_vdi_port.h"
-#include "vdlog.h"
-
-#define VDI_PORT_DEV_NAME   TEXT("\\\\.\\VDIPort")
-#define FILE_DEVICE_UNKNOWN 0x00000022
-#define METHOD_BUFFERED     0
-#define FILE_ANY_ACCESS     0
-
-#define CTL_CODE(DeviceType, Function, Method, Access) (                   \
-    ((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method) \
-)
-
-#define FIRST_AVAIL_IO_FUNC 0x800
-#define RED_TUNNEL_CTL_FUNC FIRST_AVAIL_IO_FUNC
-
-#define IOCTL_RED_TUNNEL_SET_EVENT \
-    CTL_CODE(FILE_DEVICE_UNKNOWN, RED_TUNNEL_CTL_FUNC, METHOD_BUFFERED, FILE_ANY_ACCESS)
-
-#define MIN(a, b) ((a) > (b) ? (b) : (a))
-
-PCIVDIPort::PCIVDIPort()
-    : _handle (INVALID_HANDLE_VALUE)
-    , _event (NULL)
-{
-}
-
-PCIVDIPort::~PCIVDIPort()
-{
-    if (_handle != INVALID_HANDLE_VALUE) {
-        CloseHandle(_handle);
-    }
-    if (_event) {
-        CloseHandle(_event);
-    }
-}
-
-void PCIVDIPort::fill_events(HANDLE *handle) {
-    handle[PCI_VDI_PORT_EVENT] = _event;
-}
-
-bool PCIVDIPort::init()
-{
-    DWORD io_ret_len;
-    _handle = CreateFile(VDI_PORT_DEV_NAME, GENERIC_READ | GENERIC_WRITE, 0, NULL,
-                         OPEN_EXISTING, 0, NULL);
-    if (_handle == INVALID_HANDLE_VALUE) {
-        vd_printf("CreateFile() failed: %u", GetLastError());
-        return false;
-    }
-    _event = CreateEvent(NULL, FALSE, FALSE, NULL);
-    if (_event == NULL) {
-        vd_printf("CreateEvent() failed: %u", GetLastError());
-        return false;
-    }
-    if (!DeviceIoControl(_handle, IOCTL_RED_TUNNEL_SET_EVENT, &_event, sizeof(_event),
-                         NULL, 0, &io_ret_len, NULL)) {
-        vd_printf("DeviceIoControl() failed: %u", GetLastError());
-        return false;
-    }
-    return true;
-}
-
-int PCIVDIPort::write()
-{
-    int size;
-    int n;
-
-    if (_write.start == _write.end) {
-        return 0;
-    }
-    if (_write.start < _write.end) {
-        size = (int)(_write.end - _write.start);
-    } else {
-        size = (int)(&_write.ring[BUF_SIZE] - _write.start);
-    }
-    if (!WriteFile(_handle, _write.start, size, (LPDWORD)&n, NULL)) {
-        return handle_error();
-    }
-    _write.start = _write.ring + (_write.start - _write.ring + n) % BUF_SIZE;
-    return n;
-}
-
-int PCIVDIPort::read()
-{
-    int size;
-    int n;
-
-    if ((_read.end - _read.ring + 1) % BUF_SIZE == _read.start - _read.ring) {
-        return 0;
-    }
-    if (_read.start == _read.end) {
-        _read.start = _read.end = _read.ring;
-    }
-    if (_read.start <= _read.end) {
-        size = MIN(BUF_SIZE - 1, (int)(&_read.ring[BUF_SIZE] - _read.end));
-    } else {
-        size = (int)(_read.start - _read.end - 1);
-    }
-    if (!ReadFile(_handle, _read.end, size, (LPDWORD)&n, NULL)) {
-        return handle_error();
-    }
-    _read.end = _read.ring + (_read.end - _read.ring + n) % BUF_SIZE;
-    return n;
-}
-
-void PCIVDIPort::handle_event(int event)
-{
-    // do nothing - the event merely serves to wake us up, then we call read/write
-    // at VDService::execute start of while(_running) loop.
-}
+/*
+   Copyright (C) 2009 Red Hat, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "stdio.h"
+#include "pci_vdi_port.h"
+#include "vdlog.h"
+
+#define VDI_PORT_DEV_NAME   TEXT("\\\\.\\VDIPort")
+#define FILE_DEVICE_UNKNOWN 0x00000022
+#define METHOD_BUFFERED     0
+#define FILE_ANY_ACCESS     0
+
+#define CTL_CODE(DeviceType, Function, Method, Access) (                   \
+    ((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method) \
+)
+
+#define FIRST_AVAIL_IO_FUNC 0x800
+#define RED_TUNNEL_CTL_FUNC FIRST_AVAIL_IO_FUNC
+
+#define IOCTL_RED_TUNNEL_SET_EVENT \
+    CTL_CODE(FILE_DEVICE_UNKNOWN, RED_TUNNEL_CTL_FUNC, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define MIN(a, b) ((a) > (b) ? (b) : (a))
+
+PCIVDIPort::PCIVDIPort()
+    : _handle (INVALID_HANDLE_VALUE)
+    , _event (NULL)
+{
+}
+
+PCIVDIPort::~PCIVDIPort()
+{
+    if (_handle != INVALID_HANDLE_VALUE) {
+        CloseHandle(_handle);
+    }
+    if (_event) {
+        CloseHandle(_event);
+    }
+}
+
+void PCIVDIPort::fill_events(HANDLE* handles) {
+    handles[PCI_VDI_PORT_EVENT] = _event;
+}
+
+bool PCIVDIPort::init()
+{
+    DWORD io_ret_len;
+    _handle = CreateFile(VDI_PORT_DEV_NAME, GENERIC_READ | GENERIC_WRITE, 0, NULL,
+                         OPEN_EXISTING, 0, NULL);
+    if (_handle == INVALID_HANDLE_VALUE) {
+        vd_printf("CreateFile() failed: %u", GetLastError());
+        return false;
+    }
+    _event = CreateEvent(NULL, FALSE, FALSE, NULL);
+    if (_event == NULL) {
+        vd_printf("CreateEvent() failed: %u", GetLastError());
+        return false;
+    }
+    if (!DeviceIoControl(_handle, IOCTL_RED_TUNNEL_SET_EVENT, &_event, sizeof(_event),
+                         NULL, 0, &io_ret_len, NULL)) {
+        vd_printf("DeviceIoControl() failed: %u", GetLastError());
+        return false;
+    }
+    return true;
+}
+
+int PCIVDIPort::write()
+{
+    int size;
+    int n;
+
+    if (_write.start == _write.end) {
+        return 0;
+    }
+    if (_write.start < _write.end) {
+        size = (int)(_write.end - _write.start);
+    } else {
+        size = (int)(&_write.ring[BUF_SIZE] - _write.start);
+    }
+    if (!WriteFile(_handle, _write.start, size, (LPDWORD)&n, NULL)) {
+        return handle_error();
+    }
+    _write.start = _write.ring + (_write.start - _write.ring + n) % BUF_SIZE;
+    return n;
+}
+
+int PCIVDIPort::read()
+{
+    int size;
+    int n;
+
+    if ((_read.end - _read.ring + 1) % BUF_SIZE == _read.start - _read.ring) {
+        return 0;
+    }
+    if (_read.start == _read.end) {
+        _read.start = _read.end = _read.ring;
+    }
+    if (_read.start <= _read.end) {
+        size = MIN(BUF_SIZE - 1, (int)(&_read.ring[BUF_SIZE] - _read.end));
+    } else {
+        size = (int)(_read.start - _read.end - 1);
+    }
+    if (!ReadFile(_handle, _read.end, size, (LPDWORD)&n, NULL)) {
+        return handle_error();
+    }
+    _read.end = _read.ring + (_read.end - _read.ring + n) % BUF_SIZE;
+    return n;
+}
+
+void PCIVDIPort::handle_event(int event)
+{
+    // do nothing - the event merely serves to wake us up, then we call read/write
+    // at VDService::execute start of while(_running) loop.
+}
diff --git a/vdservice/pci_vdi_port.h b/vdservice/pci_vdi_port.h
index d9b6d67..caa990f 100644
--- a/vdservice/pci_vdi_port.h
+++ b/vdservice/pci_vdi_port.h
@@ -40,7 +40,7 @@ public:
     virtual int write();
     virtual int read();
     virtual unsigned get_num_events() { return PCI_VDI_PORT_EVENT_COUNT; }
-    virtual void fill_events(HANDLE* handle);
+    virtual void fill_events(HANDLE* handles);
     virtual void handle_event(int event);
 
 private:
diff --git a/vdservice/vdi_port.h b/vdservice/vdi_port.h
index b5c6f46..50c4d29 100644
--- a/vdservice/vdi_port.h
+++ b/vdservice/vdi_port.h
@@ -1,33 +1,33 @@
-/*
-   Copyright (C) 2009 Red Hat, Inc.
-
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the GNU General Public License as
-   published by the Free Software Foundation; either version 2 of
-   the License, or (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef _H_VDI_PORT
-#define _H_VDI_PORT
-
-#include <windows.h>
-#include <stdint.h>
-
-#define MIN(a, b) ((a) > (b) ? (b) : (a))
-
-#define BUF_SIZE    (1024 * 1024)
-
-#define VDI_PORT_BLOCKED    0
-#define VDI_PORT_RESET      -1
-#define VDI_PORT_ERROR      -2
+/*
+   Copyright (C) 2009 Red Hat, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _H_VDI_PORT
+#define _H_VDI_PORT
+
+#include <windows.h>
+#include <stdint.h>
+
+#define MIN(a, b) ((a) > (b) ? (b) : (a))
+
+#define BUF_SIZE    (1024 * 1024)
+
+#define VDI_PORT_BLOCKED    0
+#define VDI_PORT_RESET      -1
+#define VDI_PORT_ERROR      -2
 
 // Ring notes:
 // _end is one after the end of data
@@ -36,40 +36,40 @@
 // _start-1 is never used
 // ring_write & read on right side of the ring (update _end)
 // ring_read & write from left (update _start)
-
-typedef struct VDIPortBuffer {
-    OVERLAPPED overlap;
-    uint8_t* start;
-    uint8_t* end;
-    bool pending;
-    int bytes;
-    uint8_t ring[BUF_SIZE];
-} VDIPortBuffer;
-
-class VDIPort {
-public:
-    VDIPort();
-    virtual ~VDIPort() {}
-
-    size_t ring_write(const void* buf, size_t size);
-    size_t write_ring_free_space();
-    size_t ring_read(void* buf, size_t size);
-    size_t read_ring_size();
-    size_t read_ring_continuous_remaining_size();
-
-    virtual const char *name() = 0;
-    virtual bool init() = 0;
-    virtual unsigned get_num_events() = 0;
-    virtual void fill_events(HANDLE *handle) = 0;
-    virtual void handle_event(int event) = 0;
-    virtual int write() = 0;
-    virtual int read() = 0;
-
-protected:
-    int handle_error();
-
-    VDIPortBuffer _write;
-    VDIPortBuffer _read;
-};
-
-#endif
+
+typedef struct VDIPortBuffer {
+    OVERLAPPED overlap;
+    uint8_t* start;
+    uint8_t* end;
+    bool pending;
+    int bytes;
+    uint8_t ring[BUF_SIZE];
+} VDIPortBuffer;
+
+class VDIPort {
+public:
+    VDIPort();
+    virtual ~VDIPort() {}
+
+    size_t ring_write(const void* buf, size_t size);
+    size_t write_ring_free_space();
+    size_t ring_read(void* buf, size_t size);
+    size_t read_ring_size();
+    size_t read_ring_continuous_remaining_size();
+
+    virtual const char *name() = 0;
+    virtual bool init() = 0;
+    virtual unsigned get_num_events() = 0;
+    virtual void fill_events(HANDLE* handles) = 0;
+    virtual void handle_event(int event) = 0;
+    virtual int write() = 0;
+    virtual int read() = 0;
+
+protected:
+    int handle_error();
+
+    VDIPortBuffer _write;
+    VDIPortBuffer _read;
+};
+
+#endif
diff --git a/vdservice/virtio_vdi_port.cpp b/vdservice/virtio_vdi_port.cpp
index bbdd59e..ce4d80a 100644
--- a/vdservice/virtio_vdi_port.cpp
+++ b/vdservice/virtio_vdi_port.cpp
@@ -1,56 +1,56 @@
-/*
-   Copyright (C) 2009 Red Hat, Inc.
-
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the GNU General Public License as
-   published by the Free Software Foundation; either version 2 of
-   the License, or (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "stdio.h"
-#include "virtio_vdi_port.h"
-#include "vdlog.h"
-
-#define VIOSERIAL_PORT_PATH                 L"\\\\.\\Global\\com.redhat.spice.0"
-
-// Current limitation of virtio-serial windows driver (RHBZ 617000)
-#define VIOSERIAL_PORT_MAX_WRITE_BYTES      2048
-
-VirtioVDIPort* VirtioVDIPort::_singleton;
-
-VirtioVDIPort::VirtioVDIPort()
-    : VDIPort()
-    , _handle (INVALID_HANDLE_VALUE)
-{
-    _singleton = this;
-}
-
-VirtioVDIPort::~VirtioVDIPort()
-{
-    if (_handle != INVALID_HANDLE_VALUE) {
-        CloseHandle(_handle);
-    }
-    if (_read.overlap.hEvent) {
-        CloseHandle(_read.overlap.hEvent);
-    }
-    if (_write.overlap.hEvent) {
-        CloseHandle(_write.overlap.hEvent);
-    }
-}
-
-void VirtioVDIPort::fill_events(HANDLE *handle) {
-    handle[VIRTIO_VDI_PORT_EVENT_WRITE] = _write.overlap.hEvent;
-    handle[VIRTIO_VDI_PORT_EVENT_READ] = _read.overlap.hEvent;
-}
-
+/*
+   Copyright (C) 2009 Red Hat, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "stdio.h"
+#include "virtio_vdi_port.h"
+#include "vdlog.h"
+
+#define VIOSERIAL_PORT_PATH                 L"\\\\.\\Global\\com.redhat.spice.0"
+
+// Current limitation of virtio-serial windows driver (RHBZ 617000)
+#define VIOSERIAL_PORT_MAX_WRITE_BYTES      2048
+
+VirtioVDIPort* VirtioVDIPort::_singleton;
+
+VirtioVDIPort::VirtioVDIPort()
+    : VDIPort()
+    , _handle (INVALID_HANDLE_VALUE)
+{
+    _singleton = this;
+}
+
+VirtioVDIPort::~VirtioVDIPort()
+{
+    if (_handle != INVALID_HANDLE_VALUE) {
+        CloseHandle(_handle);
+    }
+    if (_read.overlap.hEvent) {
+        CloseHandle(_read.overlap.hEvent);
+    }
+    if (_write.overlap.hEvent) {
+        CloseHandle(_write.overlap.hEvent);
+    }
+}
+
+void VirtioVDIPort::fill_events(HANDLE* handles) {
+    handles[VIRTIO_VDI_PORT_EVENT_WRITE] = _write.overlap.hEvent;
+    handles[VIRTIO_VDI_PORT_EVENT_READ] = _read.overlap.hEvent;
+}
+
 void VirtioVDIPort::handle_event(int event) {
     switch (event) {
         case VIRTIO_VDI_PORT_EVENT_WRITE:
@@ -62,114 +62,114 @@ void VirtioVDIPort::handle_event(int event) {
         default:
             vd_printf("ERROR: unexpected event %d", event);
     }
-}
-
-bool VirtioVDIPort::init()
-{
-    _handle = CreateFile(VIOSERIAL_PORT_PATH, GENERIC_READ | GENERIC_WRITE , 0, NULL,
-                         OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
-    if (_handle == INVALID_HANDLE_VALUE) {
-        vd_printf("CreateFile() %s failed: %u", VIOSERIAL_PORT_PATH, GetLastError());
-        return false;
-    }
-    _write.overlap.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
-    if (_write.overlap.hEvent == NULL) {
-        vd_printf("CreateEvent() failed: %u", GetLastError());
-        return false;
-    }
-    _read.overlap.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
-    if (_read.overlap.hEvent == NULL) {
-        vd_printf("CreateEvent() failed: %u", GetLastError());
-        return false;
-    }
-    return true;
-}
-
-int VirtioVDIPort::write()
-{
-    int size;
-    int ret;
-
-    //FIXME: return VDI_PORT_NO_DATA
-    if (_write.start == _write.end) {
-        return 0;
-    }
-    if (!_write.pending) {
-        if (_write.start < _write.end) {
-            size = (int)(_write.end - _write.start);
-        } else {
-            size = (int)(&_write.ring[BUF_SIZE] - _write.start);
-        }
-        size = MIN(size, VIOSERIAL_PORT_MAX_WRITE_BYTES);
-        _write.pending = true;
-        if (WriteFile(_handle, _write.start, size, NULL, &_write.overlap)) {
-            write_completion();
-        } if (GetLastError() != ERROR_IO_PENDING) {
-            return handle_error();
-        }
-    }
-    ret = _write.bytes;
-    _write.bytes = 0;
-    return ret;
-}
-
-void VirtioVDIPort::write_completion()
-{
-    DWORD bytes;
-
-    if (!_write.pending) {
-        return;
-    }
-    if (!GetOverlappedResult(_handle, &_write.overlap, &bytes, FALSE)) {
-        vd_printf("GetOverlappedResult failed: %u", GetLastError());
-        return;
-    }
-    _write.start = _write.ring + (_write.start - _write.ring + bytes) % BUF_SIZE;
-    _write.bytes = bytes;
-    _write.pending = false;
-}
-
-int VirtioVDIPort::read()
-{
-    int size;
-    int ret;
-
-    if (!_read.pending) {
-        //FIXME: read_ring_continuous_remaining_size? return VDI_PORT_BUFFER_FULL
-        if ((_read.end - _read.ring + 1) % BUF_SIZE == _read.start - _read.ring) {
-            vd_printf("DEBUG: buffer full");
-            return 0;
-        }
-        if (_read.start == _read.end) {
-            _read.start = _read.end = _read.ring;
-        }
-        if (_read.start <= _read.end) {
-            size = MIN(BUF_SIZE - 1, (int)(&_read.ring[BUF_SIZE] - _read.end));
-        } else {
-            size = (int)(_read.start - _read.end - 1);
-        }
-        _read.pending = true;
-        if (ReadFile(_handle, _read.end, size, NULL, &_read.overlap)) {
-            read_completion();
-        } else if (GetLastError() != ERROR_IO_PENDING) {
-            return handle_error();
-        }
-    }
-    ret = _read.bytes;
-    _read.bytes = 0;
-    return ret;
-}
-
-void VirtioVDIPort::read_completion()
-{
-    DWORD bytes;
-
-    if (!GetOverlappedResult(_handle, &_read.overlap, &bytes, FALSE) &&
-                                      GetLastError() != ERROR_MORE_DATA) {
-        vd_printf("GetOverlappedResult failed: %u", GetLastError());
-        return;
-    }
-    _read.end = _read.ring + (_read.end - _read.ring + bytes) % BUF_SIZE;
-    _read.bytes = bytes;
-    _read.pending = false;
-}
+}
+
+bool VirtioVDIPort::init()
+{
+    _handle = CreateFile(VIOSERIAL_PORT_PATH, GENERIC_READ | GENERIC_WRITE , 0, NULL,
+                         OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
+    if (_handle == INVALID_HANDLE_VALUE) {
+        vd_printf("CreateFile() %s failed: %u", VIOSERIAL_PORT_PATH, GetLastError());
+        return false;
+    }
+    _write.overlap.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+    if (_write.overlap.hEvent == NULL) {
+        vd_printf("CreateEvent() failed: %u", GetLastError());
+        return false;
+    }
+    _read.overlap.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+    if (_read.overlap.hEvent == NULL) {
+        vd_printf("CreateEvent() failed: %u", GetLastError());
+        return false;
+    }
+    return true;
+}
+
+int VirtioVDIPort::write()
+{
+    int size;
+    int ret;
+
+    //FIXME: return VDI_PORT_NO_DATA
+    if (_write.start == _write.end) {
+        return 0;
+    }
+    if (!_write.pending) {
+        if (_write.start < _write.end) {
+            size = (int)(_write.end - _write.start);
+        } else {
+            size = (int)(&_write.ring[BUF_SIZE] - _write.start);
+        }
+        size = MIN(size, VIOSERIAL_PORT_MAX_WRITE_BYTES);
+        _write.pending = true;
+        if (WriteFile(_handle, _write.start, size, NULL, &_write.overlap)) {
+            write_completion();
+        } if (GetLastError() != ERROR_IO_PENDING) {
+            return handle_error();
+        }
+    }
+    ret = _write.bytes;
+    _write.bytes = 0;
+    return ret;
+}
+
+void VirtioVDIPort::write_completion()
+{
+    DWORD bytes;
+
+    if (!_write.pending) {
+        return;
+    }
+    if (!GetOverlappedResult(_handle, &_write.overlap, &bytes, FALSE)) {
+        vd_printf("GetOverlappedResult failed: %u", GetLastError());
+        return;
+    }
+    _write.start = _write.ring + (_write.start - _write.ring + bytes) % BUF_SIZE;
+    _write.bytes = bytes;
+    _write.pending = false;
+}
+
+int VirtioVDIPort::read()
+{
+    int size;
+    int ret;
+
+    if (!_read.pending) {
+        //FIXME: read_ring_continuous_remaining_size? return VDI_PORT_BUFFER_FULL
+        if ((_read.end - _read.ring + 1) % BUF_SIZE == _read.start - _read.ring) {
+            vd_printf("DEBUG: buffer full");
+            return 0;
+        }
+        if (_read.start == _read.end) {
+            _read.start = _read.end = _read.ring;
+        }
+        if (_read.start <= _read.end) {
+            size = MIN(BUF_SIZE - 1, (int)(&_read.ring[BUF_SIZE] - _read.end));
+        } else {
+            size = (int)(_read.start - _read.end - 1);
+        }
+        _read.pending = true;
+        if (ReadFile(_handle, _read.end, size, NULL, &_read.overlap)) {
+            read_completion();
+        } else if (GetLastError() != ERROR_IO_PENDING) {
+            return handle_error();
+        }
+    }
+    ret = _read.bytes;
+    _read.bytes = 0;
+    return ret;
+}
+
+void VirtioVDIPort::read_completion()
+{
+    DWORD bytes;
+
+    if (!GetOverlappedResult(_handle, &_read.overlap, &bytes, FALSE) &&
+                                      GetLastError() != ERROR_MORE_DATA) {
+        vd_printf("GetOverlappedResult failed: %u", GetLastError());
+        return;
+    }
+    _read.end = _read.ring + (_read.end - _read.ring + bytes) % BUF_SIZE;
+    _read.bytes = bytes;
+    _read.pending = false;
+}
diff --git a/vdservice/virtio_vdi_port.h b/vdservice/virtio_vdi_port.h
index 04d3412..15b6811 100644
--- a/vdservice/virtio_vdi_port.h
+++ b/vdservice/virtio_vdi_port.h
@@ -16,7 +16,7 @@ public:
     virtual const char *name() { return "VirtioVDIPort"; }
     virtual bool init();
     virtual unsigned get_num_events() { return VIRTIO_VDI_PORT_EVENT_COUNT; }
-    virtual void fill_events(HANDLE *handle);
+    virtual void fill_events(HANDLE* handles);
     virtual void handle_event(int event);
     virtual int write();
     virtual int read();
@@ -30,4 +30,4 @@ private:
     HANDLE _handle;
 };
 
-#endif //_H_VIRTIO_VDI_PORT
-\ No newline at end of file
+#endif //_H_VIRTIO_VDI_PORT