![Hans de Goede](/assets/img/avatar_default.png)
VirtualBox 6.0.x has a new feature where the guest kernel driver passes info about the origin of the request (e.g. userspace or kernelspace) to the hypervisor. If we do not pass this information then when running the 6.0.x userspace guest-additions tools on a 6.0.x host, some requests will get denied with a VERR_VERSION_MISMATCH error, breaking vboxservice.service and the mounting of shared folders marked to be auto-mounted. This commit implements passing the requestor info to the host, fixing this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
185 lines
5.8 KiB
C
185 lines
5.8 KiB
C
/* SPDX-License-Identifier: (GPL-2.0 OR CDDL-1.0) */
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/* Copyright (C) 2010-2016 Oracle Corporation */
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#ifndef __VBOXGUEST_CORE_H__
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#define __VBOXGUEST_CORE_H__
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/miscdevice.h>
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#include <linux/spinlock.h>
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#include <linux/wait.h>
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#include <linux/workqueue.h>
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#include <linux/vboxguest.h>
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#include "vmmdev.h"
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struct vbg_session;
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/** VBox guest memory balloon. */
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struct vbg_mem_balloon {
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/** Work handling VMMDEV_EVENT_BALLOON_CHANGE_REQUEST events */
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struct work_struct work;
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/** Pre-allocated vmmdev_memballoon_info req for query */
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struct vmmdev_memballoon_info *get_req;
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/** Pre-allocated vmmdev_memballoon_change req for inflate / deflate */
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struct vmmdev_memballoon_change *change_req;
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/** The current number of chunks in the balloon. */
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u32 chunks;
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/** The maximum number of chunks in the balloon. */
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u32 max_chunks;
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/**
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* Array of pointers to page arrays. A page * array is allocated for
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* each chunk when inflating, and freed when the deflating.
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*/
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struct page ***pages;
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};
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/**
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* Per bit usage tracker for a u32 mask.
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*
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* Used for optimal handling of guest properties and event filter.
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*/
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struct vbg_bit_usage_tracker {
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/** Per bit usage counters. */
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u32 per_bit_usage[32];
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/** The current mask according to per_bit_usage. */
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u32 mask;
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};
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/** VBox guest device (data) extension. */
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struct vbg_dev {
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struct device *dev;
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/** The base of the adapter I/O ports. */
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u16 io_port;
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/** Pointer to the mapping of the VMMDev adapter memory. */
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struct vmmdev_memory *mmio;
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/** Host version */
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char host_version[64];
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/** Host features */
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unsigned int host_features;
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/**
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* Dummy page and vmap address for reserved kernel virtual-address
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* space for the guest mappings, only used on hosts lacking vtx.
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*/
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struct page *guest_mappings_dummy_page;
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void *guest_mappings;
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/** Spinlock protecting pending_events. */
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spinlock_t event_spinlock;
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/** Preallocated struct vmmdev_events for the IRQ handler. */
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struct vmmdev_events *ack_events_req;
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/** Wait-for-event list for threads waiting for multiple events. */
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wait_queue_head_t event_wq;
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/** Mask of pending events. */
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u32 pending_events;
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/** Wait-for-event list for threads waiting on HGCM async completion. */
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wait_queue_head_t hgcm_wq;
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/** Pre-allocated hgcm cancel2 req. for cancellation on timeout */
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struct vmmdev_hgcm_cancel2 *cancel_req;
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/** Mutex protecting cancel_req accesses */
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struct mutex cancel_req_mutex;
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/** Pre-allocated mouse-status request for the input-device handling. */
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struct vmmdev_mouse_status *mouse_status_req;
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/** Input device for reporting abs mouse coordinates to the guest. */
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struct input_dev *input;
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/** Memory balloon information. */
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struct vbg_mem_balloon mem_balloon;
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/** Lock for session related items in vbg_dev and vbg_session */
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struct mutex session_mutex;
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/** Events we won't permit anyone to filter out. */
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u32 fixed_events;
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/**
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* Usage counters for the host events (excludes fixed events),
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* Protected by session_mutex.
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*/
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struct vbg_bit_usage_tracker event_filter_tracker;
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/**
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* The event filter last reported to the host (or UINT32_MAX).
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* Protected by session_mutex.
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*/
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u32 event_filter_host;
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/**
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* Usage counters for guest capabilities. Indexed by capability bit
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* number, one count per session using a capability.
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* Protected by session_mutex.
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*/
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struct vbg_bit_usage_tracker guest_caps_tracker;
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/**
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* The guest capabilities last reported to the host (or UINT32_MAX).
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* Protected by session_mutex.
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*/
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u32 guest_caps_host;
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/**
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* Heartbeat timer which fires with interval
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* cNsHearbeatInterval and its handler sends
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* VMMDEVREQ_GUEST_HEARTBEAT to VMMDev.
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*/
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struct timer_list heartbeat_timer;
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/** Heartbeat timer interval in ms. */
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int heartbeat_interval_ms;
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/** Preallocated VMMDEVREQ_GUEST_HEARTBEAT request. */
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struct vmmdev_request_header *guest_heartbeat_req;
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/** "vboxguest" char-device */
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struct miscdevice misc_device;
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/** "vboxuser" char-device */
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struct miscdevice misc_device_user;
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};
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/** The VBoxGuest per session data. */
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struct vbg_session {
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/** Pointer to the device extension. */
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struct vbg_dev *gdev;
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/**
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* Array containing HGCM client IDs associated with this session.
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* These will be automatically disconnected when the session is closed.
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* Protected by vbg_gdev.session_mutex.
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*/
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u32 hgcm_client_ids[64];
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/**
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* Host events requested by the session.
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* An event type requested in any guest session will be added to the
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* host filter. Protected by vbg_gdev.session_mutex.
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*/
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u32 event_filter;
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/**
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* Guest capabilities for this session.
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* A capability claimed by any guest session will be reported to the
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* host. Protected by vbg_gdev.session_mutex.
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*/
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u32 guest_caps;
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/** VMMDEV_REQUESTOR_* flags */
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u32 requestor;
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/** Set on CANCEL_ALL_WAITEVENTS, protected by vbg_devevent_spinlock. */
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bool cancel_waiters;
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};
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int vbg_core_init(struct vbg_dev *gdev, u32 fixed_events);
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void vbg_core_exit(struct vbg_dev *gdev);
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struct vbg_session *vbg_core_open_session(struct vbg_dev *gdev, u32 requestor);
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void vbg_core_close_session(struct vbg_session *session);
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int vbg_core_ioctl(struct vbg_session *session, unsigned int req, void *data);
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int vbg_core_set_mouse_status(struct vbg_dev *gdev, u32 features);
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irqreturn_t vbg_core_isr(int irq, void *dev_id);
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void vbg_linux_mouse_event(struct vbg_dev *gdev);
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/* Private (non exported) functions form vboxguest_utils.c */
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void *vbg_req_alloc(size_t len, enum vmmdev_request_type req_type,
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u32 requestor);
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void vbg_req_free(void *req, size_t len);
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int vbg_req_perform(struct vbg_dev *gdev, void *req);
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int vbg_hgcm_call32(
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struct vbg_dev *gdev, u32 requestor, u32 client_id, u32 function,
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u32 timeout_ms, struct vmmdev_hgcm_function_parameter32 *parm32,
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u32 parm_count, int *vbox_status);
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#endif
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