1 files changed, 307 insertions, 0 deletions
diff --git a/src/VBox/HostDrivers/Support/darwin/SUPLib-darwin.cpp b/src/VBox/HostDrivers/Support/darwin/SUPLib-darwin.cpp
new file mode 100644
index 00000000..c40322a9
--- /dev/null
+++ b/src/VBox/HostDrivers/Support/darwin/SUPLib-darwin.cpp
@@ -0,0 +1,307 @@
+/* $Id: SUPLib-darwin.cpp $ */
+/** @file
+ * VirtualBox Support Library - Darwin specific parts.
+ */
+
+/*
+ * Copyright (C) 2006-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define LOG_GROUP LOG_GROUP_SUP
+#ifdef IN_SUP_HARDENED_R3
+# undef DEBUG /* Warning: disables RT_STRICT */
+# ifndef LOG_DISABLED
+#  define LOG_DISABLED
+# endif
+# define RTLOG_REL_DISABLED
+# include <iprt/log.h>
+#endif
+
+#include <VBox/types.h>
+#include <VBox/sup.h>
+#include <VBox/param.h>
+#include <VBox/err.h>
+#include <VBox/log.h>
+#include <iprt/path.h>
+#include <iprt/assert.h>
+#include <iprt/err.h>
+#include <iprt/string.h>
+#include "../SUPLibInternal.h"
+#include "../SUPDrvIOC.h"
+
+#include <sys/fcntl.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <mach/mach_port.h>
+#include <IOKit/IOKitLib.h>
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/** System device name. */
+#define DEVICE_NAME_SYS "/dev/vboxdrv"
+/** User device name. */
+#define DEVICE_NAME_USR "/dev/vboxdrvu"
+/** The IOClass key of the service (see SUPDrv-darwin.cpp / Info.plist). */
+#define IOCLASS_NAME    "org_virtualbox_SupDrv"
+
+
+
+/**
+ * Opens the BSD device node.
+ *
+ * @returns VBox status code.
+ */
+static int suplibDarwinOpenDevice(PSUPLIBDATA pThis, bool fUnrestricted)
+{
+    /*
+     * Open the BSD device.
+     * This will connect to the session created when the SupDrvClient was
+     * started, so it has to be done after opening the service (IOC v9.1+).
+     */
+    int hDevice = open(fUnrestricted ? DEVICE_NAME_SYS : DEVICE_NAME_USR, O_RDWR, 0);
+    if (hDevice < 0)
+    {
+        int rc;
+        switch (errno)
+        {
+            case ENODEV:    rc = VERR_VM_DRIVER_LOAD_ERROR; break;
+            case EPERM:
+            case EACCES:    rc = VERR_VM_DRIVER_NOT_ACCESSIBLE; break;
+            case ENOENT:    rc = VERR_VM_DRIVER_NOT_INSTALLED; break;
+            default:        rc = VERR_VM_DRIVER_OPEN_ERROR; break;
+        }
+        LogRel(("SUP: Failed to open \"%s\", errno=%d, rc=%Rrc\n", fUnrestricted ? DEVICE_NAME_SYS : DEVICE_NAME_USR, errno, rc));
+        return rc;
+    }
+
+    /*
+     * Mark the file handle close on exec.
+     */
+    if (fcntl(hDevice, F_SETFD, FD_CLOEXEC) != 0)
+    {
+#ifdef IN_SUP_HARDENED_R3
+        int rc = VERR_INTERNAL_ERROR;
+#else
+        int err = errno;
+        int rc = RTErrConvertFromErrno(err);
+        LogRel(("suplibOSInit: setting FD_CLOEXEC failed, errno=%d (%Rrc)\n", err, rc));
+#endif
+        close(hDevice);
+        return rc;
+    }
+
+    pThis->hDevice       = hDevice;
+    pThis->fUnrestricted = fUnrestricted;
+    return VINF_SUCCESS;
+}
+
+
+/**
+ * Opens the IOKit service, instantiating org_virtualbox_SupDrvClient.
+ *
+ * @returns VBox status code.
+ */
+static int suplibDarwinOpenService(PSUPLIBDATA pThis)
+{
+    /*
+     * Open the IOKit client first - The first step is finding the service.
+     */
+    mach_port_t MasterPort;
+    kern_return_t kr = IOMasterPort(MACH_PORT_NULL, &MasterPort);
+    if (kr != kIOReturnSuccess)
+    {
+        LogRel(("IOMasterPort -> %d\n", kr));
+        return VERR_GENERAL_FAILURE;
+    }
+
+    CFDictionaryRef ClassToMatch = IOServiceMatching(IOCLASS_NAME);
+    if (!ClassToMatch)
+    {
+        LogRel(("IOServiceMatching(\"%s\") failed.\n", IOCLASS_NAME));
+        return VERR_GENERAL_FAILURE;
+    }
+
+    /* Create an io_iterator_t for all instances of our drivers class that exist in the IORegistry. */
+    io_iterator_t Iterator;
+    kr = IOServiceGetMatchingServices(MasterPort, ClassToMatch, &Iterator);
+    if (kr != kIOReturnSuccess)
+    {
+        LogRel(("IOServiceGetMatchingServices returned %d\n", kr));
+        return VERR_GENERAL_FAILURE;
+    }
+
+    /* Get the first item in the iterator and release it. */
+    io_service_t ServiceObject = IOIteratorNext(Iterator);
+    IOObjectRelease(Iterator);
+    if (!ServiceObject)
+    {
+        LogRel(("SUP: Couldn't find any matches. The kernel module is probably not loaded.\n"));
+        return VERR_VM_DRIVER_NOT_INSTALLED;
+    }
+
+    /*
+     * Open the service.
+     *
+     * This will cause the user client class in SUPDrv-darwin.cpp to be
+     * instantiated and create a session for this process.
+     */
+    io_connect_t Connection = 0;
+    kr = IOServiceOpen(ServiceObject, mach_task_self(), SUP_DARWIN_IOSERVICE_COOKIE, &Connection);
+    IOObjectRelease(ServiceObject);
+    if (kr != kIOReturnSuccess)
+    {
+        LogRel(("SUP: IOServiceOpen returned %d. Driver open failed.\n", kr));
+        pThis->uConnection = 0;
+        return VERR_VM_DRIVER_OPEN_ERROR;
+    }
+
+    AssertCompile(sizeof(pThis->uConnection) >= sizeof(Connection));
+    pThis->uConnection = Connection;
+    return VINF_SUCCESS;
+}
+
+
+int suplibOsInit(PSUPLIBDATA pThis, bool fPreInited, bool fUnrestricted, SUPINITOP *penmWhat, PRTERRINFO pErrInfo)
+{
+    RT_NOREF(penmWhat, pErrInfo);
+
+    /*
+     * Nothing to do if pre-inited.
+     */
+    if (fPreInited)
+        return VINF_SUCCESS;
+
+    /*
+     * Do the job.
+     */
+    Assert(pThis->hDevice == (intptr_t)NIL_RTFILE);
+    int rc = suplibDarwinOpenService(pThis);
+    if (RT_SUCCESS(rc))
+    {
+        rc = suplibDarwinOpenDevice(pThis, fUnrestricted);
+        if (RT_FAILURE(rc))
+        {
+            kern_return_t kr = IOServiceClose((io_connect_t)pThis->uConnection);
+            if (kr != kIOReturnSuccess)
+            {
+                LogRel(("Warning: IOServiceClose(%RCv) returned %d\n", pThis->uConnection, kr));
+                AssertFailed();
+            }
+            pThis->uConnection = 0;
+        }
+    }
+
+    return rc;
+}
+
+
+int suplibOsTerm(PSUPLIBDATA pThis)
+{
+    /*
+     * Close the connection to the IOService.
+     * This will cause the SUPDRVSESSION to be closed (starting IOC 9.1).
+     */
+    if (pThis->uConnection)
+    {
+        kern_return_t kr = IOServiceClose((io_connect_t)pThis->uConnection);
+        if (kr != kIOReturnSuccess)
+        {
+            LogRel(("Warning: IOServiceClose(%RCv) returned %d\n", pThis->uConnection, kr));
+            AssertFailed();
+        }
+        pThis->uConnection = 0;
+    }
+
+    /*
+     * Check if we're inited at all.
+     */
+    if (pThis->hDevice != (intptr_t)NIL_RTFILE)
+    {
+        if (close(pThis->hDevice))
+            AssertFailed();
+        pThis->hDevice = (intptr_t)NIL_RTFILE;
+    }
+
+    return VINF_SUCCESS;
+}
+
+
+#ifndef IN_SUP_HARDENED_R3
+
+int suplibOsInstall(void)
+{
+    return VERR_NOT_IMPLEMENTED;
+}
+
+
+int suplibOsUninstall(void)
+{
+    return VERR_NOT_IMPLEMENTED;
+}
+
+
+int suplibOsIOCtl(PSUPLIBDATA pThis, uintptr_t uFunction, void *pvReq, size_t cbReq)
+{
+    RT_NOREF(cbReq);
+    if (RT_LIKELY(ioctl(pThis->hDevice, uFunction, pvReq) >= 0))
+        return VINF_SUCCESS;
+    return RTErrConvertFromErrno(errno);
+}
+
+
+int suplibOsIOCtlFast(PSUPLIBDATA pThis, uintptr_t uFunction, uintptr_t idCpu)
+{
+    int rc = ioctl(pThis->hDevice, uFunction, idCpu);
+    if (rc == -1)
+        rc = errno;
+    return rc;
+}
+
+
+int suplibOsPageAlloc(PSUPLIBDATA pThis, size_t cPages, void **ppvPages)
+{
+    NOREF(pThis);
+    *ppvPages = valloc(cPages << PAGE_SHIFT);
+    if (*ppvPages)
+    {
+        memset(*ppvPages, 0, cPages << PAGE_SHIFT);
+        return VINF_SUCCESS;
+    }
+    return RTErrConvertFromErrno(errno);
+}
+
+
+int suplibOsPageFree(PSUPLIBDATA pThis, void *pvPages, size_t /* cPages */)
+{
+    NOREF(pThis);
+    free(pvPages);
+    return VINF_SUCCESS;
+}
+
+#endif /* !IN_SUP_HARDENED_R3 */
+