common/VBoxGuest/VBoxDev-haiku.c

edc0ced209cf455268870a686b88fd851f3a4188vboxsync/* $Id$ */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync/** @file
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * VBoxGuest kernel driver, Haiku Guest Additions, implementation.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync/*
e1ed9baf425f4c757302ec417a815aab945fdbf0vboxsync * Copyright (C) 2012-2015 Oracle Corporation
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * available from http://www.virtualbox.org. This file is free software;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * you can redistribute it and/or modify it under the terms of the GNU
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * General Public License (GPL) as published by the Free Software
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync/*
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * This code is based on:
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * VirtualBox Guest Additions for Haiku.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * Copyright (c) 2011 Mike Smith <mike@scgtrp.net>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *                    Fran�ois Revol <revol@free.fr>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * Permission is hereby granted, free of charge, to any person
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * obtaining a copy of this software and associated documentation
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * files (the "Software"), to deal in the Software without
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * restriction, including without limitation the rights to use,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * copy, modify, merge, publish, distribute, sublicense, and/or sell
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * copies of the Software, and to permit persons to whom the
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * Software is furnished to do so, subject to the following
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * conditions:
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * The above copyright notice and this permission notice shall be
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * included in all copies or substantial portions of the Software.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
edc0ced209cf455268870a686b88fd851f3a4188vboxsync * OTHER DEALINGS IN THE SOFTWARE.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync/*******************************************************************************
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync*   Header Files                                                               *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync*******************************************************************************/
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <sys/param.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <sys/types.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <sys/uio.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <OS.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <Drivers.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <KernelExport.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <PCI.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include "VBoxGuest-haiku.h"
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include "VBoxGuestInternal.h"
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <VBox/log.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <iprt/assert.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <iprt/initterm.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <iprt/process.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <iprt/mem.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#include <iprt/asm.h>
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#define DRIVER_NAME "vboxdev"
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#define DEVICE_NAME "misc/vboxguest"
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#define MODULE_NAME "generic/vboxguest"
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync/*******************************************************************************
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync*   Internal Functions                                                         *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync*******************************************************************************/
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuOpen(const char *name, uint32 flags, void **cookie);
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuClose(void *cookie);
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuFree(void *cookie);
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuIOCtl(void *cookie, uint32 op, void *data, size_t len);
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuSelect(void *cookie, uint8 event, uint32 ref, selectsync *sync);
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuDeselect(void *cookie, uint8 event, selectsync *sync);
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuWrite(void *cookie, off_t position, const void *data, size_t *numBytes);
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuRead(void *cookie, off_t position, void *data, size_t *numBytes);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic device_hooks g_VBoxGuestHaikuDeviceHooks =
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    VBoxGuestHaikuOpen,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    VBoxGuestHaikuClose,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    VBoxGuestHaikuFree,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    VBoxGuestHaikuIOCtl,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    VBoxGuestHaikuRead,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    VBoxGuestHaikuWrite,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    VBoxGuestHaikuSelect,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    VBoxGuestHaikuDeselect,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync};
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync/**
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * Driver open hook.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param name          The name of the device as returned by publish_devices.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param flags         Open flags.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param cookie        Where to store the session pointer.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @return Haiku status code.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuOpen(const char *name, uint32 flags, void **cookie)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    int rc;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    PVBOXGUESTSESSION pSession;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    LogFlow((DRIVER_NAME ":VBoxGuestHaikuOpen\n"));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    /*
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     * Create a new session.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     */
e1ed9baf425f4c757302ec417a815aab945fdbf0vboxsync    rc = VbgdCommonCreateUserSession(&g_DevExt, &pSession);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (RT_SUCCESS(rc))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        Log((DRIVER_NAME ":VBoxGuestHaikuOpen success: g_DevExt=%p pSession=%p rc=%d pid=%d\n",&g_DevExt, pSession, rc,(int)RTProcSelf()));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        ASMAtomicIncU32(&cUsers);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        *cookie = pSession;
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync        return B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    LogRel((DRIVER_NAME ":VBoxGuestHaikuOpen: failed. rc=%d\n", rc));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    return RTErrConvertToErrno(rc);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync/**
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * Driver close hook.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param cookie        The session.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @return Haiku status code.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuClose(void *cookie)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)cookie;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    Log(("VBoxGuestHaikuClose: pSession=%p\n", pSession));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
cadd9de82d5169aad827fe8d68e41a78ebbc6410vboxsync    /** @todo r=ramshankar: should we really be using the session spinlock here? */
cadd9de82d5169aad827fe8d68e41a78ebbc6410vboxsync    RTSpinlockAcquire(g_DevExt.SessionSpinlock);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync    /* @todo we don't know if it belongs to this session!! */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (sState.selectSync)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        //dprintf(DRIVER_NAME "close: unblocking select %p %x\n", sState.selectSync, sState.selectEvent);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        notify_select_event(sState.selectSync, sState.selectEvent);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        sState.selectEvent = (uint8_t)0;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        sState.selectRef = (uint32_t)0;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        sState.selectSync = (void *)NULL;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
cadd9de82d5169aad827fe8d68e41a78ebbc6410vboxsync    RTSpinlockRelease(g_DevExt.SessionSpinlock);
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync    return B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync/**
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * Driver free hook.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param cookie        The session.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @return Haiku status code.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuFree(void *cookie)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)cookie;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    Log(("VBoxGuestHaikuFree: pSession=%p\n", pSession));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    /*
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     * Close the session if it's still hanging on to the device...
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (VALID_PTR(pSession))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
e1ed9baf425f4c757302ec417a815aab945fdbf0vboxsync        VbgdCommonCloseSession(&g_DevExt, pSession);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        ASMAtomicDecU32(&cUsers);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    else
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        Log(("VBoxGuestHaikuFree: si_drv1=%p!\n", pSession));
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync    return B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync/**
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * Driver IOCtl entry.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param cookie        The session.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param op            The operation to perform.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param data          The data associated with the operation.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param len           Size of the data in bytes.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @return Haiku status code.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuIOCtl(void *cookie, uint32 op, void *data, size_t len)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)cookie;
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync    Log((DRIVER_NAME ":VBoxGuestHaikuIOCtl cookie=%p op=0x%08x data=%p len=%lu)\n", cookie, op, data, len));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync    int rc = B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    /*
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     * Validate the input.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (RT_UNLIKELY(!VALID_PTR(pSession)))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        return EINVAL;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    /*
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     * Validate the request wrapper.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#if 0
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (IOCPARM_LEN(ulCmd) != sizeof(VBGLBIGREQ))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync        Log((DRIVER_NAME ": VBoxGuestHaikuIOCtl: bad request %lu size=%lu expected=%d\n", ulCmd, IOCPARM_LEN(ulCmd),
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync                                                                                        sizeof(VBGLBIGREQ)));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        return ENOTTY;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync#endif
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (RT_UNLIKELY(len > _1M * 16))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
cadd9de82d5169aad827fe8d68e41a78ebbc6410vboxsync        dprintf(DRIVER_NAME ": VBoxGuestHaikuIOCtl: bad size %#x; pArg=%p Cmd=%lu.\n", (unsigned)len, data, op);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        return EINVAL;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    /*
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     * Read the request.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    void *pvBuf = NULL;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (RT_LIKELY(len > 0))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        pvBuf = RTMemTmpAlloc(len);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        if (RT_UNLIKELY(!pvBuf))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            LogRel((DRIVER_NAME ":VBoxGuestHaikuIOCtl: RTMemTmpAlloc failed to alloc %d bytes.\n", len));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            return ENOMEM;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync        /** @todo r=ramshankar: replace with RTR0MemUserCopyFrom() */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        rc = user_memcpy(pvBuf, data, len);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        if (RT_UNLIKELY(rc < 0))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            RTMemTmpFree(pvBuf);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            LogRel((DRIVER_NAME ":VBoxGuestHaikuIOCtl: user_memcpy failed; pvBuf=%p data=%p op=%d. rc=%d\n", pvBuf, data, op, rc));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            return EFAULT;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        if (RT_UNLIKELY(!VALID_PTR(pvBuf)))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            RTMemTmpFree(pvBuf);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            LogRel((DRIVER_NAME ":VBoxGuestHaikuIOCtl: pvBuf invalid pointer %p\n", pvBuf));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            return EINVAL;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    Log((DRIVER_NAME ":VBoxGuestHaikuIOCtl: pSession=%p pid=%d.\n", pSession,(int)RTProcSelf()));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    /*
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     * Process the IOCtl.
edc0ced209cf455268870a686b88fd851f3a4188vboxsync     */
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    size_t cbDataReturned;
e1ed9baf425f4c757302ec417a815aab945fdbf0vboxsync    rc = VbgdCommonIoCtl(op, &g_DevExt, pSession, pvBuf, len, &cbDataReturned);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (RT_SUCCESS(rc))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        rc = 0;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        if (RT_UNLIKELY(cbDataReturned > len))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            Log((DRIVER_NAME ":VBoxGuestHaikuIOCtl: too much output data %d expected %d\n", cbDataReturned, len));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            cbDataReturned = len;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        if (cbDataReturned > 0)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            rc = user_memcpy(data, pvBuf, cbDataReturned);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            if (RT_UNLIKELY(rc < 0))
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync                Log((DRIVER_NAME ":VBoxGuestHaikuIOCtl: user_memcpy failed; pvBuf=%p pArg=%p Cmd=%lu. rc=%d\n", pvBuf, data, op, rc));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync                rc = EFAULT;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    else
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
e1ed9baf425f4c757302ec417a815aab945fdbf0vboxsync        Log((DRIVER_NAME ":VBoxGuestHaikuIOCtl: VbgdCommonIoCtl failed. rc=%d\n", rc));
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        rc = EFAULT;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    RTMemTmpFree(pvBuf);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    return rc;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync/**
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * Driver select hook.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param cookie        The session.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param event         The event.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param ref           ???
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param sync          ???
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @return Haiku status code.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuSelect(void *cookie, uint8 event, uint32 ref, selectsync *sync)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)cookie;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    status_t err = B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    switch (event)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        case B_SELECT_READ:
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            break;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        default:
edc0ced209cf455268870a686b88fd851f3a4188vboxsync            return EINVAL;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
cadd9de82d5169aad827fe8d68e41a78ebbc6410vboxsync    RTSpinlockAcquire(g_DevExt.SessionSpinlock);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    uint32_t u32CurSeq = ASMAtomicUoReadU32(&g_DevExt.u32MousePosChangedSeq);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (pSession->u32MousePosChangedSeq != u32CurSeq)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        pSession->u32MousePosChangedSeq = u32CurSeq;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        notify_select_event(sync, event);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    else if (sState.selectSync == NULL)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        sState.selectEvent = (uint8_t)event;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        sState.selectRef = (uint32_t)ref;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        sState.selectSync = (void *)sync;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    else
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        err = B_WOULD_BLOCK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
cadd9de82d5169aad827fe8d68e41a78ebbc6410vboxsync    RTSpinlockRelease(g_DevExt.SessionSpinlock);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    return err;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync/**
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * Driver deselect hook.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param cookie        The session.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param event         The event.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param sync          ???
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @return Haiku status code.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuDeselect(void *cookie, uint8 event, selectsync *sync)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)cookie;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    status_t err = B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    //dprintf(DRIVER_NAME "deselect(,%d,%p)\n", event, sync);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
cadd9de82d5169aad827fe8d68e41a78ebbc6410vboxsync    RTSpinlockAcquire(g_DevExt.SessionSpinlock);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (sState.selectSync == sync)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        //dprintf(DRIVER_NAME "deselect: dropping: %p %x\n", sState.selectSync, sState.selectEvent);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        sState.selectEvent = (uint8_t)0;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        sState.selectRef = (uint32_t)0;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        sState.selectSync = NULL;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    else
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        err = B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
cadd9de82d5169aad827fe8d68e41a78ebbc6410vboxsync    RTSpinlockRelease(g_DevExt.SessionSpinlock);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    return err;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync/**
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * Driver write hook.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param cookie            The session.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param position          The offset.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param data              Pointer to the data.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param numBytes          Where to store the number of bytes written.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @return Haiku status code.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuWrite(void *cookie, off_t position, const void *data, size_t *numBytes)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    *numBytes = 0;
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync    return B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync/**
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * Driver read hook.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param cookie            The session.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param position          The offset.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param data              Pointer to the data.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @param numBytes          Where to store the number of bytes read.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync *
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync * @return Haiku status code.
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync */
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatic status_t VBoxGuestHaikuRead(void *cookie, off_t position, void *data, size_t *numBytes)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)cookie;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (*numBytes == 0)
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync        return B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    uint32_t u32CurSeq = ASMAtomicUoReadU32(&g_DevExt.u32MousePosChangedSeq);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    if (pSession->u32MousePosChangedSeq != u32CurSeq)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        pSession->u32MousePosChangedSeq = u32CurSeq;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        *numBytes = 1;
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync        return B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    }
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    *numBytes = 0;
ecc1743369d58e0618f528b22a7b82b57dcd47advboxsync    return B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncint32 api_version = B_CUR_DRIVER_API_VERSION;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatus_t init_hardware()
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    return get_module(MODULE_NAME, (module_info **)&g_VBoxGuest);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncstatus_t init_driver()
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    return B_OK;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncdevice_hooks* find_device(const char *name)
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    static device_hooks g_VBoxGuestHaikuDeviceHooks =
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    {
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        VBoxGuestHaikuOpen,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        VBoxGuestHaikuClose,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        VBoxGuestHaikuFree,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        VBoxGuestHaikuIOCtl,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        VBoxGuestHaikuRead,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        VBoxGuestHaikuWrite,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        VBoxGuestHaikuSelect,
edc0ced209cf455268870a686b88fd851f3a4188vboxsync        VBoxGuestHaikuDeselect
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    };
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    return &g_VBoxGuestHaikuDeviceHooks;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncconst char** publish_devices()
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    static const char *devices[] = { DEVICE_NAME, NULL };
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    return devices;
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync
edc0ced209cf455268870a686b88fd851f3a4188vboxsyncvoid uninit_driver()
edc0ced209cf455268870a686b88fd851f3a4188vboxsync{
edc0ced209cf455268870a686b88fd851f3a4188vboxsync    put_module(MODULE_NAME);
edc0ced209cf455268870a686b88fd851f3a4188vboxsync}
edc0ced209cf455268870a686b88fd851f3a4188vboxsync