Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 658 insertions, 0 deletions

diff --git a/src/VBox/Additions/freebsd/vboxvfs/Makefile.kmk b/src/VBox/Additions/freebsd/vboxvfs/Makefile.kmk
new file mode 100644
index 00000000..0117c422
--- /dev/null
+++ b/src/VBox/Additions/freebsd/vboxvfs/Makefile.kmk
@@ -0,0 +1,64 @@
+# $Id: Makefile.kmk $
+## @file
+# Sub-Makefile for the FreeBSD Shared folder kernel module.
+#
+
+#
+# Copyright (C) 2007-2019 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.
+#
+
+SUB_DEPTH = ../../../../..
+include $(KBUILD_PATH)/subheader.kmk
+
+ifneq ($(KBUILD_HOST),freebsd)
+$(error "The FreeBSD guest additions can only be built on FreeBSD!")
+endif
+
+#
+# vboxvfs - The Shared Folder Driver
+#
+SYSMODS.freebsd      += vboxvfs
+vboxvfs_TEMPLATE      = VBOXGUESTR0
+vboxvfs_DEFS          = VBOX_WITH_HGCM
+vboxvfs_INCS          = \
+        . \
+       $(vboxvfs_0_OUTDIR)
+vboxvfs_SOURCES       = \
+	vboxvfs_vfsops.c \
+	vboxvfs_vnops.c
+vboxvfs_LIBS          = \
+	$(VBOX_LIB_VBGL_R0) \
+	$(VBOX_LIB_IPRT_GUEST_R0)
+vboxvfs_DEPS          = \
+       $$(vboxvfs_0_OUTDIR)/vnode_if.h \
+       $$(vboxvfs_0_OUTDIR)/vnode_if_newproto.h \
+       $$(vboxvfs_0_OUTDIR)/vnode_if_typedef.h
+vboxvfs_CLEAN        += $(vboxvfs_DEPS)
+
+VBOX_AWK := /usr/bin/awk
+
+$$(vboxvfs_0_OUTDIR)/vnode_if.h: $(VBOX_FREEBSD_SRC)/kern/vnode_if.src
+	$(call MSG_TOOL,awk,VBoxGuest,$<,$@)
+	$(QUIET)$(VBOX_AWK) -f $(VBOX_FREEBSD_SRC)/tools/vnode_if.awk $(VBOX_FREEBSD_SRC)/kern/vnode_if.src -h
+	$(QUIET)$(MV) $(vboxvfs_0_OUTDIR)/vnode_if.h $(vboxvfs_0_OUTDIR)/vnode_if.h
+
+$$(vboxvfs_0_OUTDIR)/vnode_if_newproto.h: $(VBOX_FREEBSD_SRC)/kern/vnode_if.src
+	$(call MSG_TOOL,awk,VBoxGuest,$<,$@)
+	$(QUIET)$(VBOX_AWK) -f $(VBOX_FREEBSD_SRC)/tools/vnode_if.awk $(VBOX_FREEBSD_SRC)/kern/vnode_if.src -p
+	$(QUIET)$(MV) $(vboxvfs_0_OUTDIR)/vnode_if_newproto.h $(vboxvfs_0_OUTDIR)/vnode_if_newproto.h
+
+$$(vboxvfs_0_OUTDIR)/vnode_if_typedef.h: $(VBOX_FREEBSD_SRC)/kern/vnode_if.src
+	$(call MSG_TOOL,awk,VBoxGuest,$<,$@)
+	$(QUIET)$(VBOX_AWK) -f $(VBOX_FREEBSD_SRC)/tools/vnode_if.awk $(VBOX_FREEBSD_SRC)/kern/vnode_if.src -q
+	$(QUIET)$(MV) $(vboxvfs_0_OUTDIR)/vnode_if_typedef.h $(vboxvfs_0_OUTDIR)/vnode_if_typedef.h
+
+include $(FILE_KBUILD_SUB_FOOTER)
+
diff --git a/src/VBox/Additions/freebsd/vboxvfs/vboxvfs.h b/src/VBox/Additions/freebsd/vboxvfs/vboxvfs.h
new file mode 100644
index 00000000..354da72b
--- /dev/null
+++ b/src/VBox/Additions/freebsd/vboxvfs/vboxvfs.h
@@ -0,0 +1,95 @@
+/* $Id: vboxvfs.h $ */
+/** @file
+ * Description.
+ */
+
+/*
+ * Copyright (C) 2010-2019 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.
+ */
+
+#ifndef GA_INCLUDED_SRC_freebsd_vboxvfs_vboxvfs_h
+#define GA_INCLUDED_SRC_freebsd_vboxvfs_vboxvfs_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#define VBOXVFS_VFSNAME "vboxvfs"
+#define VBOXVFS_VERSION 1
+
+#define MAX_HOST_NAME 256
+#define MAX_NLS_NAME 32
+
+struct vboxvfs_mount_info {
+    char name[MAX_HOST_NAME];
+    char nls_name[MAX_NLS_NAME];
+    int uid;
+    int gid;
+    int ttl;
+};
+
+#ifdef _KERNEL
+
+#include <VBox/VBoxGuestLibSharedFolders.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+
+struct vboxvfsmount {
+    uid_t           uid;
+    gid_t           gid;
+    mode_t          file_mode;
+    mode_t          dir_mode;
+    struct mount   *mp;
+    struct ucred   *owner;
+    u_int           flags;
+    long            nextino;
+    int             caseopt;
+    int             didrele;
+};
+
+/* structs - stolen from the linux shared module code */
+struct sf_glob_info {
+    VBGLSFMAP map;
+/*    struct nls_table *nls;*/
+    int ttl;
+    int uid;
+    int gid;
+    struct vnode *vnode_root;
+};
+
+struct sf_inode_info {
+    SHFLSTRING *path;
+    int force_restat;
+};
+
+#if 0
+struct sf_dir_info {
+    struct list_head info_list;
+};
+#endif
+
+struct sf_dir_buf {
+    size_t nb_entries;
+    size_t free_bytes;
+    size_t used_bytes;
+    void *buf;
+#if 0
+   struct list_head head;
+#endif
+};
+
+struct sf_reg_info {
+    SHFLHANDLE handle;
+};
+
+#endif  /* KERNEL */
+
+#endif /* !GA_INCLUDED_SRC_freebsd_vboxvfs_vboxvfs_h */
+
diff --git a/src/VBox/Additions/freebsd/vboxvfs/vboxvfs_vfsops.c b/src/VBox/Additions/freebsd/vboxvfs/vboxvfs_vfsops.c
new file mode 100644
index 00000000..2c9ca850
--- /dev/null
+++ b/src/VBox/Additions/freebsd/vboxvfs/vboxvfs_vfsops.c
@@ -0,0 +1,258 @@
+/* $Id: vboxvfs_vfsops.c $ */
+/** @file
+ * Description.
+ */
+
+/*
+ * Copyright (C) 2008-2019 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.
+ */
+
+#include "vboxvfs.h"
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/bio.h>
+#include <sys/buf.h>
+#include <sys/kernel.h>
+#include <sys/sysctl.h>
+#include <sys/vnode.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+
+#include <iprt/mem.h>
+
+#define VFSMP2SFGLOBINFO(mp) ((struct sf_glob_info *)mp->mnt_data)
+
+static int vboxvfs_version = VBOXVFS_VERSION;
+
+SYSCTL_NODE(_vfs, OID_AUTO, vboxvfs, CTLFLAG_RW, 0, "VirtualBox shared filesystem");
+SYSCTL_INT(_vfs_vboxvfs, OID_AUTO, version, CTLFLAG_RD, &vboxvfs_version, 0, "");
+
+/* global connection to the host service. */
+static VBGLSFCLIENT g_vboxSFClient;
+
+static vfs_init_t       vboxvfs_init;
+static vfs_uninit_t     vboxvfs_uninit;
+static vfs_cmount_t     vboxvfs_cmount;
+static vfs_mount_t      vboxvfs_mount;
+static vfs_root_t       vboxvfs_root;
+static vfs_quotactl_t   vboxvfs_quotactl;
+static vfs_statfs_t     vboxvfs_statfs;
+static vfs_unmount_t    vboxvfs_unmount;
+
+static struct vfsops vboxvfs_vfsops = {
+    .vfs_init     =    vboxvfs_init,
+    .vfs_cmount   =    vboxvfs_cmount,
+    .vfs_mount    =    vboxvfs_mount,
+    .vfs_quotactl =    vboxvfs_quotactl,
+    .vfs_root     =    vboxvfs_root,
+    .vfs_statfs   =    vboxvfs_statfs,
+    .vfs_sync     =    vfs_stdsync,
+    .vfs_uninit   =    vboxvfs_uninit,
+    .vfs_unmount  =    vboxvfs_unmount,
+};
+
+
+VFS_SET(vboxvfs_vfsops, vboxvfs, VFCF_NETWORK);
+MODULE_DEPEND(vboxvfs, vboxguest, 1, 1, 1);
+
+static int vboxvfs_cmount(struct mntarg *ma, void * data, int flags, struct thread *td)
+{
+    struct vboxvfs_mount_info args;
+    int rc = 0;
+
+    printf("%s: Enter\n", __FUNCTION__);
+
+    rc = copyin(data, &args, sizeof(struct vboxvfs_mount_info));
+    if (rc)
+        return rc;
+
+    ma = mount_argf(ma, "uid", "%d", args.uid);
+    ma = mount_argf(ma, "gid", "%d", args.gid);
+    ma = mount_arg(ma, "from", args.name, -1);
+
+    rc = kernel_mount(ma, flags);
+
+    printf("%s: Leave rc=%d\n", __FUNCTION__, rc);
+
+    return rc;
+}
+
+static const char *vboxvfs_opts[] = {
+    "uid", "gid", "from", "fstype", "fspath", "errmsg", NULL
+};
+
+static int vboxvfs_mount(struct mount *mp, struct thread *td)
+{
+    int rc;
+    char *pszShare;
+    int  cbShare, cbOption;
+    int uid = 0, gid = 0;
+    struct sf_glob_info *pShFlGlobalInfo;
+    SHFLSTRING *pShFlShareName = NULL;
+    int cbShFlShareName;
+
+    printf("%s: Enter\n", __FUNCTION__);
+
+    if (mp->mnt_flag & (MNT_UPDATE | MNT_ROOTFS))
+        return EOPNOTSUPP;
+
+    if (vfs_filteropt(mp->mnt_optnew, vboxvfs_opts))
+    {
+        vfs_mount_error(mp, "%s", "Invalid option");
+        return EINVAL;
+    }
+
+    rc = vfs_getopt(mp->mnt_optnew, "from", (void **)&pszShare, &cbShare);
+    if (rc || pszShare[cbShare-1] != '\0' || cbShare > 0xfffe)
+        return EINVAL;
+
+    rc = vfs_getopt(mp->mnt_optnew, "gid", (void **)&gid, &cbOption);
+    if ((rc != ENOENT) && (rc || cbOption != sizeof(gid)))
+        return EINVAL;
+
+    rc = vfs_getopt(mp->mnt_optnew, "uid", (void **)&uid, &cbOption);
+    if ((rc != ENOENT) && (rc || cbOption != sizeof(uid)))
+        return EINVAL;
+
+    pShFlGlobalInfo = RTMemAllocZ(sizeof(struct sf_glob_info));
+    if (!pShFlGlobalInfo)
+        return ENOMEM;
+
+    cbShFlShareName = offsetof (SHFLSTRING, String.utf8) + cbShare + 1;
+    pShFlShareName  = RTMemAllocZ(cbShFlShareName);
+    if (!pShFlShareName)
+        return VERR_NO_MEMORY;
+
+    pShFlShareName->u16Length = cbShare;
+    pShFlShareName->u16Size   = cbShare + 1;
+    memcpy (pShFlShareName->String.utf8, pszShare, cbShare + 1);
+
+    rc = VbglR0SfMapFolder (&g_vboxSFClient, pShFlShareName, &pShFlGlobalInfo->map);
+    RTMemFree(pShFlShareName);
+
+    if (RT_FAILURE (rc))
+    {
+        RTMemFree(pShFlGlobalInfo);
+        printf("VbglR0SfMapFolder failed rc=%d\n", rc);
+        return EPROTO;
+    }
+
+    pShFlGlobalInfo->uid = uid;
+    pShFlGlobalInfo->gid = gid;
+
+    mp->mnt_data = pShFlGlobalInfo;
+
+    /** @todo root vnode. */
+
+    vfs_getnewfsid(mp);
+    vfs_mountedfrom(mp, pszShare);
+
+    printf("%s: Leave rc=0\n", __FUNCTION__);
+
+    return 0;
+}
+
+static int vboxvfs_unmount(struct mount *mp, int mntflags, struct thread *td)
+{
+    struct sf_glob_info *pShFlGlobalInfo = VFSMP2SFGLOBINFO(mp);
+    int rc;
+    int flags = 0;
+
+    rc = VbglR0SfUnmapFolder(&g_vboxSFClient, &pShFlGlobalInfo->map);
+    if (RT_FAILURE(rc))
+        printf("Failed to unmap shared folder\n");
+
+    if (mntflags & MNT_FORCE)
+        flags |= FORCECLOSE;
+
+    /* There is 1 extra root vnode reference (vnode_root). */
+    rc = vflush(mp, 1, flags, td);
+    if (rc)
+        return rc;
+
+
+    RTMemFree(pShFlGlobalInfo);
+    mp->mnt_data = NULL;
+
+    return 0;
+}
+
+static int vboxvfs_root(struct mount *mp, int flags, struct vnode **vpp, struct thread *td)
+{
+    int rc = 0;
+    struct sf_glob_info *pShFlGlobalInfo = VFSMP2SFGLOBINFO(mp);
+    struct vnode *vp;
+
+    printf("%s: Enter\n", __FUNCTION__);
+
+    vp = pShFlGlobalInfo->vnode_root;
+    VREF(vp);
+
+    vn_lock(vp, flags | LK_RETRY, td);
+    *vpp = vp;
+
+    printf("%s: Leave\n", __FUNCTION__);
+
+    return rc;
+}
+
+static int vboxvfs_quotactl(struct mount *mp, int cmd, uid_t uid, void *arg, struct thread *td)
+{
+    return EOPNOTSUPP;
+}
+
+int vboxvfs_init(struct vfsconf *vfsp)
+{
+    int rc;
+
+    /* Initialize the R0 guest library. */
+    rc = VbglR0SfInit();
+    if (RT_FAILURE(rc))
+        return ENXIO;
+
+    /* Connect to the host service. */
+    rc = VbglR0SfConnect(&g_vboxSFClient);
+    if (RT_FAILURE(rc))
+    {
+        printf("Failed to get connection to host! rc=%d\n", rc);
+        VbglR0SfTerm();
+        return ENXIO;
+    }
+
+    rc = VbglR0SfSetUtf8(&g_vboxSFClient);
+    if (RT_FAILURE (rc))
+    {
+        printf("VbglR0SfSetUtf8 failed, rc=%d\n", rc);
+        VbglR0SfDisconnect(&g_vboxSFClient);
+        VbglR0SfTerm();
+        return EPROTO;
+    }
+
+    printf("Successfully loaded shared folder module\n");
+
+    return 0;
+}
+
+int vboxvfs_uninit(struct vfsconf *vfsp)
+{
+    VbglR0SfDisconnect(&g_vboxSFClient);
+    VbglR0SfTerm();
+
+    return 0;
+}
+
+int vboxvfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
+{
+    return 0;
+}
diff --git a/src/VBox/Additions/freebsd/vboxvfs/vboxvfs_vnops.c b/src/VBox/Additions/freebsd/vboxvfs/vboxvfs_vnops.c
new file mode 100644
index 00000000..7795ddaa
--- /dev/null
+++ b/src/VBox/Additions/freebsd/vboxvfs/vboxvfs_vnops.c
@@ -0,0 +1,241 @@
+/* $Id: vboxvfs_vnops.c $ */
+/** @file
+ * Description.
+ */
+
+/*
+ * Copyright (C) 2008-2019 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.
+ */
+
+#include "vboxvfs.h"
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/namei.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>
+#include <sys/bio.h>
+#include <sys/buf.h>
+#include <sys/fcntl.h>
+#include <sys/mount.h>
+#include <sys/unistd.h>
+#include <sys/vnode.h>
+#include <sys/limits.h>
+#include <sys/lockf.h>
+#include <sys/stat.h>
+
+#include <vm/vm.h>
+#include <vm/vm_extern.h>
+
+/*
+ * Prototypes for VBOXVFS vnode operations
+ */
+static vop_create_t     vboxvfs_create;
+static vop_mknod_t      vboxvfs_mknod;
+static vop_open_t       vboxvfs_open;
+static vop_close_t      vboxvfs_close;
+static vop_access_t     vboxvfs_access;
+static vop_getattr_t    vboxvfs_getattr;
+static vop_setattr_t    vboxvfs_setattr;
+static vop_read_t       vboxvfs_read;
+static vop_write_t      vboxvfs_write;
+static vop_fsync_t      vboxvfs_fsync;
+static vop_remove_t     vboxvfs_remove;
+static vop_link_t       vboxvfs_link;
+static vop_lookup_t     vboxvfs_lookup;
+static vop_rename_t     vboxvfs_rename;
+static vop_mkdir_t      vboxvfs_mkdir;
+static vop_rmdir_t      vboxvfs_rmdir;
+static vop_symlink_t    vboxvfs_symlink;
+static vop_readdir_t    vboxvfs_readdir;
+static vop_strategy_t   vboxvfs_strategy;
+static vop_print_t      vboxvfs_print;
+static vop_pathconf_t   vboxvfs_pathconf;
+static vop_advlock_t    vboxvfs_advlock;
+static vop_getextattr_t vboxvfs_getextattr;
+static vop_ioctl_t      vboxvfs_ioctl;
+static vop_getpages_t   vboxvfs_getpages;
+static vop_inactive_t   vboxvfs_inactive;
+static vop_putpages_t   vboxvfs_putpages;
+static vop_reclaim_t    vboxvfs_reclaim;
+
+struct vop_vector vboxvfs_vnodeops = {
+    .vop_default    =   &default_vnodeops,
+
+    .vop_access     =   vboxvfs_access,
+    .vop_advlock    =   vboxvfs_advlock,
+    .vop_close      =   vboxvfs_close,
+    .vop_create     =   vboxvfs_create,
+    .vop_fsync      =   vboxvfs_fsync,
+    .vop_getattr    =   vboxvfs_getattr,
+    .vop_getextattr =   vboxvfs_getextattr,
+    .vop_getpages   =   vboxvfs_getpages,
+    .vop_inactive   =   vboxvfs_inactive,
+    .vop_ioctl      =   vboxvfs_ioctl,
+    .vop_link       =   vboxvfs_link,
+    .vop_lookup     =   vboxvfs_lookup,
+    .vop_mkdir      =   vboxvfs_mkdir,
+    .vop_mknod      =   vboxvfs_mknod,
+    .vop_open       =   vboxvfs_open,
+    .vop_pathconf   =   vboxvfs_pathconf,
+    .vop_print      =   vboxvfs_print,
+    .vop_putpages   =   vboxvfs_putpages,
+    .vop_read       =   vboxvfs_read,
+    .vop_readdir    =   vboxvfs_readdir,
+    .vop_reclaim    =   vboxvfs_reclaim,
+    .vop_remove     =   vboxvfs_remove,
+    .vop_rename     =   vboxvfs_rename,
+    .vop_rmdir      =   vboxvfs_rmdir,
+    .vop_setattr    =   vboxvfs_setattr,
+    .vop_strategy   =   vboxvfs_strategy,
+    .vop_symlink    =   vboxvfs_symlink,
+    .vop_write      =   vboxvfs_write,
+};
+
+static int vboxvfs_access(struct vop_access_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_open(struct vop_open_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_close(struct vop_close_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_getattr(struct vop_getattr_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_setattr(struct vop_setattr_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_read(struct vop_read_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_write(struct vop_write_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_create(struct vop_create_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_remove(struct vop_remove_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_rename(struct vop_rename_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_link(struct vop_link_args *ap)
+{
+    return EOPNOTSUPP;
+}
+
+static int vboxvfs_symlink(struct vop_symlink_args *ap)
+{
+    return EOPNOTSUPP;
+}
+
+static int vboxvfs_mknod(struct vop_mknod_args *ap)
+{
+    return EOPNOTSUPP;
+}
+
+static int vboxvfs_mkdir(struct vop_mkdir_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_rmdir(struct vop_rmdir_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_readdir(struct vop_readdir_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_fsync(struct vop_fsync_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_print (struct vop_print_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_pathconf (struct vop_pathconf_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_strategy (struct vop_strategy_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_ioctl(struct vop_ioctl_args *ap)
+{
+    return ENOTTY;
+}
+
+static int vboxvfs_getextattr(struct vop_getextattr_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_advlock(struct vop_advlock_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_lookup(struct vop_lookup_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_inactive(struct vop_inactive_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_reclaim(struct vop_reclaim_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_getpages(struct vop_getpages_args *ap)
+{
+    return 0;
+}
+
+static int vboxvfs_putpages(struct vop_putpages_args *ap)
+{
+    return 0;
+}
+