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SubjectRe: [PATCH resend v2 1/3] virt: Add vboxguest driver for Virtual Box Guest integration UAPI
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On 11/26/2017 09:12 AM, Hans de Goede wrote:
> This commit adds the headers describing the ioctl API for the
> /dev/vboxguest device used by the Virtual Box Guest Additions
> in Virtual Box virtual machines.
>
> The driver providing the /dev/vboxguest device will allow Virtual Box
> Guest Additions features such as copy-and-paste, seamless mode and
> OpenGL pass-through.
>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>

Minor comments inline in the code.

Reviewed-by: Larry Finger <Larry.Finger@lwfinger.net>

Larry

> ---
> Changes in v2:
> -Change all uapi headers to kernel coding style: Drop struct and enum typedefs
> make type and struct-member names all lowercase, enum values all uppercase.
> -Remove unused struct type declarations from some headers (shaving of another
> 1000 lines)
> -Remove or fixup doxygen style comments
> -Get rid of CHECK macros, use a function taking in_ and out_size args instead
> -Some other small codyingstyle fixes
> -Split into multiple patches
> ---
> MAINTAINERS | 7 +
> include/uapi/linux/vbox_err.h | 170 ++++++++++++++++
> include/uapi/linux/vbox_vmmdev_types.h | 237 +++++++++++++++++++++++
> include/uapi/linux/vboxguest.h | 341 +++++++++++++++++++++++++++++++++
> 4 files changed, 755 insertions(+)
> create mode 100644 include/uapi/linux/vbox_err.h
> create mode 100644 include/uapi/linux/vbox_vmmdev_types.h
> create mode 100644 include/uapi/linux/vboxguest.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 275815e2ef44..fe3dc0e9b901 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -14549,6 +14549,13 @@ S: Maintained
> F: drivers/virtio/virtio_input.c
> F: include/uapi/linux/virtio_input.h
>
> +VIRTUAL BOX GUEST DEVICE DRIVER
> +M: Hans de Goede <hdegoede@redhat.com>
> +M: Arnd Bergmann <arnd@arndb.de>
> +M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> +S: Maintained
> +F: include/uapi/linux/vbox*.h
> +
> VIRTUAL SERIO DEVICE DRIVER
> M: Stephen Chandler Paul <thatslyude@gmail.com>
> S: Maintained
> diff --git a/include/uapi/linux/vbox_err.h b/include/uapi/linux/vbox_err.h
> new file mode 100644
> index 000000000000..6f56d2952621
> --- /dev/null
> +++ b/include/uapi/linux/vbox_err.h
> @@ -0,0 +1,170 @@
> +/*
> + * Copyright (C) 2017 Oracle Corporation
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +#ifndef __UAPI_VBOX_ERR_H__
> +#define __UAPI_VBOX_ERR_H__
> +
> +#define VINF_SUCCESS 0
> +#define VERR_GENERAL_FAILURE (-1)
> +#define VERR_INVALID_PARAMETER (-2)
> +#define VERR_INVALID_MAGIC (-3)
> +#define VERR_INVALID_HANDLE (-4)
> +#define VERR_LOCK_FAILED (-5)
> +#define VERR_INVALID_POINTER (-6)
> +#define VERR_IDT_FAILED (-7)
> +#define VERR_NO_MEMORY (-8)
> +#define VERR_ALREADY_LOADED (-9)
> +#define VERR_PERMISSION_DENIED (-10)
> +#define VERR_VERSION_MISMATCH (-11)
> +#define VERR_NOT_IMPLEMENTED (-12)
> +#define VERR_INVALID_FLAGS (-13)
> +
> +#define VERR_NOT_EQUAL (-18)
> +#define VERR_NOT_SYMLINK (-19)
> +#define VERR_NO_TMP_MEMORY (-20)
> +#define VERR_INVALID_FMODE (-21)
> +#define VERR_WRONG_ORDER (-22)
> +#define VERR_NO_TLS_FOR_SELF (-23)
> +#define VERR_FAILED_TO_SET_SELF_TLS (-24)
> +#define VERR_NO_CONT_MEMORY (-26)
> +#define VERR_NO_PAGE_MEMORY (-27)
> +#define VERR_THREAD_IS_DEAD (-29)
> +#define VERR_THREAD_NOT_WAITABLE (-30)
> +#define VERR_PAGE_TABLE_NOT_PRESENT (-31)
> +#define VERR_INVALID_CONTEXT (-32)
> +#define VERR_TIMER_BUSY (-33)
> +#define VERR_ADDRESS_CONFLICT (-34)
> +#define VERR_UNRESOLVED_ERROR (-35)
> +#define VERR_INVALID_FUNCTION (-36)
> +#define VERR_NOT_SUPPORTED (-37)
> +#define VERR_ACCESS_DENIED (-38)
> +#define VERR_INTERRUPTED (-39)
> +#define VERR_TIMEOUT (-40)
> +#define VERR_BUFFER_OVERFLOW (-41)
> +#define VERR_TOO_MUCH_DATA (-42)
> +#define VERR_MAX_THRDS_REACHED (-43)
> +#define VERR_MAX_PROCS_REACHED (-44)
> +#define VERR_SIGNAL_REFUSED (-45)
> +#define VERR_SIGNAL_PENDING (-46)
> +#define VERR_SIGNAL_INVALID (-47)
> +#define VERR_STATE_CHANGED (-48)
> +#define VERR_INVALID_UUID_FORMAT (-49)
> +#define VERR_PROCESS_NOT_FOUND (-50)
> +#define VERR_PROCESS_RUNNING (-51)
> +#define VERR_TRY_AGAIN (-52)
> +#define VERR_PARSE_ERROR (-53)
> +#define VERR_OUT_OF_RANGE (-54)
> +#define VERR_NUMBER_TOO_BIG (-55)
> +#define VERR_NO_DIGITS (-56)
> +#define VERR_NEGATIVE_UNSIGNED (-57)
> +#define VERR_NO_TRANSLATION (-58)
> +
> +#define VERR_NOT_FOUND (-78)
> +#define VERR_INVALID_STATE (-79)
> +#define VERR_OUT_OF_RESOURCES (-80)
> +
> +#define VERR_FILE_NOT_FOUND (-102)
> +#define VERR_PATH_NOT_FOUND (-103)
> +#define VERR_INVALID_NAME (-104)
> +#define VERR_ALREADY_EXISTS (-105)
> +#define VERR_TOO_MANY_OPEN_FILES (-106)
> +#define VERR_SEEK (-107)
> +#define VERR_NEGATIVE_SEEK (-108)
> +#define VERR_SEEK_ON_DEVICE (-109)
> +#define VERR_EOF (-110)
> +#define VERR_READ_ERROR (-111)
> +#define VERR_WRITE_ERROR (-112)
> +#define VERR_WRITE_PROTECT (-113)
> +#define VERR_SHARING_VIOLATION (-114)
> +#define VERR_FILE_LOCK_FAILED (-115)
> +#define VERR_FILE_LOCK_VIOLATION (-116)
> +#define VERR_CANT_CREATE (-117)
> +#define VERR_CANT_DELETE_DIRECTORY (-118)
> +#define VERR_NOT_SAME_DEVICE (-119)
> +#define VERR_FILENAME_TOO_LONG (-120)
> +#define VERR_MEDIA_NOT_PRESENT (-121)
> +#define VERR_MEDIA_NOT_RECOGNIZED (-122)
> +#define VERR_FILE_NOT_LOCKED (-123)
> +#define VERR_FILE_LOCK_LOST (-124)
> +#define VERR_DIR_NOT_EMPTY (-125)
> +#define VERR_NOT_A_DIRECTORY (-126)
> +#define VERR_IS_A_DIRECTORY (-127)
> +#define VERR_FILE_TOO_BIG (-128)
> +
> +#define VERR_NET_IO_ERROR (-400)
> +#define VERR_NET_OUT_OF_RESOURCES (-401)
> +#define VERR_NET_HOST_NOT_FOUND (-402)
> +#define VERR_NET_PATH_NOT_FOUND (-403)
> +#define VERR_NET_PRINT_ERROR (-404)
> +#define VERR_NET_NO_NETWORK (-405)
> +#define VERR_NET_NOT_UNIQUE_NAME (-406)
> +
> +#define VERR_NET_IN_PROGRESS (-436)
> +#define VERR_NET_ALREADY_IN_PROGRESS (-437)
> +#define VERR_NET_NOT_SOCKET (-438)
> +#define VERR_NET_DEST_ADDRESS_REQUIRED (-439)
> +#define VERR_NET_MSG_SIZE (-440)
> +#define VERR_NET_PROTOCOL_TYPE (-441)
> +#define VERR_NET_PROTOCOL_NOT_AVAILABLE (-442)
> +#define VERR_NET_PROTOCOL_NOT_SUPPORTED (-443)
> +#define VERR_NET_SOCKET_TYPE_NOT_SUPPORTED (-444)
> +#define VERR_NET_OPERATION_NOT_SUPPORTED (-445)
> +#define VERR_NET_PROTOCOL_FAMILY_NOT_SUPPORTED (-446)
> +#define VERR_NET_ADDRESS_FAMILY_NOT_SUPPORTED (-447)
> +#define VERR_NET_ADDRESS_IN_USE (-448)
> +#define VERR_NET_ADDRESS_NOT_AVAILABLE (-449)
> +#define VERR_NET_DOWN (-450)
> +#define VERR_NET_UNREACHABLE (-451)
> +#define VERR_NET_CONNECTION_RESET (-452)
> +#define VERR_NET_CONNECTION_ABORTED (-453)
> +#define VERR_NET_CONNECTION_RESET_BY_PEER (-454)
> +#define VERR_NET_NO_BUFFER_SPACE (-455)
> +#define VERR_NET_ALREADY_CONNECTED (-456)
> +#define VERR_NET_NOT_CONNECTED (-457)
> +#define VERR_NET_SHUTDOWN (-458)
> +#define VERR_NET_TOO_MANY_REFERENCES (-459)
> +#define VERR_NET_CONNECTION_TIMED_OUT (-460)
> +#define VERR_NET_CONNECTION_REFUSED (-461)
> +#define VERR_NET_HOST_DOWN (-464)
> +#define VERR_NET_HOST_UNREACHABLE (-465)
> +#define VERR_NET_PROTOCOL_ERROR (-466)
> +#define VERR_NET_INCOMPLETE_TX_PACKET (-467)
> +
> +/* misc. unsorted codes */
> +#define VERR_RESOURCE_BUSY (-138)
> +#define VERR_DISK_FULL (-152)
> +#define VERR_TOO_MANY_SYMLINKS (-156)
> +#define VERR_NO_MORE_FILES (-201)
> +#define VERR_INTERNAL_ERROR (-225)
> +#define VERR_INTERNAL_ERROR_2 (-226)
> +#define VERR_INTERNAL_ERROR_3 (-227)
> +#define VERR_INTERNAL_ERROR_4 (-228)
> +#define VERR_DEV_IO_ERROR (-250)
> +#define VERR_IO_BAD_LENGTH (-255)
> +#define VERR_BROKEN_PIPE (-301)
> +#define VERR_NO_DATA (-304)
> +#define VERR_SEM_DESTROYED (-363)
> +#define VERR_DEADLOCK (-365)
> +#define VERR_BAD_EXE_FORMAT (-608)
> +#define VINF_HGCM_ASYNC_EXECUTE (2903)
> +
> +#endif
> diff --git a/include/uapi/linux/vbox_vmmdev_types.h b/include/uapi/linux/vbox_vmmdev_types.h
> new file mode 100644
> index 000000000000..1fdabee603fa
> --- /dev/null
> +++ b/include/uapi/linux/vbox_vmmdev_types.h
> @@ -0,0 +1,237 @@
> +/*
> + * Virtual Device for Guest <-> VMM/Host communication, type definitions
> + * which are also used for the vboxguest ioctl interface / by vboxsf
> + *
> + * Copyright (C) 2006-2016 Oracle Corporation
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + * The contents of this file may alternatively be used under the terms
> + * of the Common Development and Distribution License Version 1.0
> + * (CDDL) only, 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.
> + */
> +
> +#ifndef __UAPI_VBOX_VMMDEV_TYPES_H__
> +#define __UAPI_VBOX_VMMDEV_TYPES_H__
> +
> +#include <asm/bitsperlong.h>
> +#include <linux/types.h>
> +
> +/*
> + * We cannot use linux' compiletime_assert here because it expects to be used
> + * inside a function only. Use a typedef to a char array with a negative size.
> + */
> +#define VMMDEV_ASSERT_SIZE(type, size) \
> + typedef char type ## _asrt_size[1 - 2*!!(sizeof(struct type) != (size))]

I wondered about defining a new typedef here, and checkpatch.pl complained about
it. I think your comment explains it very well.

> +
> +/** enum vmmdev_request_type - VMMDev request types. */
> +enum vmmdev_request_type {
> + VMMDEVREQ_INVALID_REQUEST = 0,
> + VMMDEVREQ_GET_MOUSE_STATUS = 1,
> + VMMDEVREQ_SET_MOUSE_STATUS = 2,
> + VMMDEVREQ_SET_POINTER_SHAPE = 3,
> + VMMDEVREQ_GET_HOST_VERSION = 4,
> + VMMDEVREQ_IDLE = 5,
> + VMMDEVREQ_GET_HOST_TIME = 10,
> + VMMDEVREQ_GET_HYPERVISOR_INFO = 20,
> + VMMDEVREQ_SET_HYPERVISOR_INFO = 21,
> + VMMDEVREQ_REGISTER_PATCH_MEMORY = 22, /* since version 3.0.6 */
> + VMMDEVREQ_DEREGISTER_PATCH_MEMORY = 23, /* since version 3.0.6 */
> + VMMDEVREQ_SET_POWER_STATUS = 30,
> + VMMDEVREQ_ACKNOWLEDGE_EVENTS = 41,
> + VMMDEVREQ_CTL_GUEST_FILTER_MASK = 42,
> + VMMDEVREQ_REPORT_GUEST_INFO = 50,
> + VMMDEVREQ_REPORT_GUEST_INFO2 = 58, /* since version 3.2.0 */
> + VMMDEVREQ_REPORT_GUEST_STATUS = 59, /* since version 3.2.8 */
> + VMMDEVREQ_REPORT_GUEST_USER_STATE = 74, /* since version 4.3 */
> + /* Retrieve a display resize request sent by the host, deprecated. */
> + VMMDEVREQ_GET_DISPLAY_CHANGE_REQ = 51,
> + VMMDEVREQ_VIDEMODE_SUPPORTED = 52,
> + VMMDEVREQ_GET_HEIGHT_REDUCTION = 53,
> + /**
> + * @VMMDEVREQ_GET_DISPLAY_CHANGE_REQ2:
> + * Retrieve a display resize request sent by the host.
> + *
> + * Queries a display resize request sent from the host. If the
> + * event_ack member is sent to true and there is an unqueried request
> + * available for one of the virtual display then that request will
> + * be returned. If several displays have unqueried requests the lowest
> + * numbered display will be chosen first. Only the most recent unseen
> + * request for each display is remembered.
> + * If event_ack is set to false, the last host request queried with
> + * event_ack set is resent, or failing that the most recent received
> + * from the host. If no host request was ever received then all zeros
> + * are returned.
> + */
> + VMMDEVREQ_GET_DISPLAY_CHANGE_REQ2 = 54,
> + VMMDEVREQ_REPORT_GUEST_CAPABILITIES = 55,
> + VMMDEVREQ_SET_GUEST_CAPABILITIES = 56,
> + VMMDEVREQ_VIDEMODE_SUPPORTED2 = 57, /* since version 3.2.0 */
> + VMMDEVREQ_GET_DISPLAY_CHANGE_REQEX = 80, /* since version 4.2.4 */
> + VMMDEVREQ_HGCM_CONNECT = 60,
> + VMMDEVREQ_HGCM_DISCONNECT = 61,
> + VMMDEVREQ_HGCM_CALL32 = 62,
> + VMMDEVREQ_HGCM_CALL64 = 63,
> + VMMDEVREQ_HGCM_CANCEL = 64,
> + VMMDEVREQ_HGCM_CANCEL2 = 65,
> + VMMDEVREQ_VIDEO_ACCEL_ENABLE = 70,
> + VMMDEVREQ_VIDEO_ACCEL_FLUSH = 71,
> + VMMDEVREQ_VIDEO_SET_VISIBLE_REGION = 72,
> + VMMDEVREQ_GET_SEAMLESS_CHANGE_REQ = 73,
> + VMMDEVREQ_QUERY_CREDENTIALS = 100,
> + VMMDEVREQ_REPORT_CREDENTIALS_JUDGEMENT = 101,
> + VMMDEVREQ_REPORT_GUEST_STATS = 110,
> + VMMDEVREQ_GET_MEMBALLOON_CHANGE_REQ = 111,
> + VMMDEVREQ_GET_STATISTICS_CHANGE_REQ = 112,
> + VMMDEVREQ_CHANGE_MEMBALLOON = 113,
> + VMMDEVREQ_GET_VRDPCHANGE_REQ = 150,
> + VMMDEVREQ_LOG_STRING = 200,
> + VMMDEVREQ_GET_CPU_HOTPLUG_REQ = 210,
> + VMMDEVREQ_SET_CPU_HOTPLUG_STATUS = 211,
> + VMMDEVREQ_REGISTER_SHARED_MODULE = 212,
> + VMMDEVREQ_UNREGISTER_SHARED_MODULE = 213,
> + VMMDEVREQ_CHECK_SHARED_MODULES = 214,
> + VMMDEVREQ_GET_PAGE_SHARING_STATUS = 215,
> + VMMDEVREQ_DEBUG_IS_PAGE_SHARED = 216,
> + VMMDEVREQ_GET_SESSION_ID = 217, /* since version 3.2.8 */
> + VMMDEVREQ_WRITE_COREDUMP = 218,
> + VMMDEVREQ_GUEST_HEARTBEAT = 219,
> + VMMDEVREQ_HEARTBEAT_CONFIGURE = 220,
> + /* Ensure the enum is a 32 bit data-type */
> + VMMDEVREQ_SIZEHACK = 0x7fffffff
> +};
> +
> +#if __BITS_PER_LONG == 64
> +#define VMMDEVREQ_HGCM_CALL VMMDEVREQ_HGCM_CALL64
> +#else
> +#define VMMDEVREQ_HGCM_CALL VMMDEVREQ_HGCM_CALL32
> +#endif
> +
> +/** HGCM service location types. */
> +enum vmmdev_hgcm_service_location_type {
> + VMMDEV_HGCM_LOC_INVALID = 0,
> + VMMDEV_HGCM_LOC_LOCALHOST = 1,
> + VMMDEV_HGCM_LOC_LOCALHOST_EXISTING = 2,
> + /* Ensure the enum is a 32 bit data-type */
> + VMMDEV_HGCM_LOC_SIZEHACK = 0x7fffffff
> +};
> +
> +/** HGCM host service location. */
> +struct vmmdev_hgcm_service_location_localhost {
> + /** Service name */
> + char service_name[128];
> +};
> +VMMDEV_ASSERT_SIZE(vmmdev_hgcm_service_location_localhost, 128);
> +
> +/** HGCM service location. */
> +struct vmmdev_hgcm_service_location {
> + /** Type of the location. */
> + enum vmmdev_hgcm_service_location_type type;
> +
> + union {
> + struct vmmdev_hgcm_service_location_localhost localhost;
> + } u;
> +};

This union only has one member. Is there some reason to keep the union here?

> +VMMDEV_ASSERT_SIZE(vmmdev_hgcm_service_location, 128 + 4);
> +
> +/** HGCM function parameter type. */
> +enum vmmdev_hgcm_function_parameter_type {
> + VMMDEV_HGCM_PARM_TYPE_INVALID = 0,
> + VMMDEV_HGCM_PARM_TYPE_32BIT = 1,
> + VMMDEV_HGCM_PARM_TYPE_64BIT = 2,
> + /** Deprecated Doesn't work, use PAGELIST. */
> + VMMDEV_HGCM_PARM_TYPE_PHYSADDR = 3,
> + /** In and Out, user-memory */
> + VMMDEV_HGCM_PARM_TYPE_LINADDR = 4,
> + /** In, user-memory (read; host<-guest) */
> + VMMDEV_HGCM_PARM_TYPE_LINADDR_IN = 5,
> + /** Out, user-memory (write; host->guest) */
> + VMMDEV_HGCM_PARM_TYPE_LINADDR_OUT = 6,
> + /** In and Out, kernel-memory */
> + VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL = 7,
> + /** In, kernel-memory (read; host<-guest) */
> + VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_IN = 8,
> + /** Out, kernel-memory (write; host->guest) */
> + VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_OUT = 9,
> + /** Physical addresses of locked pages for a buffer. */
> + VMMDEV_HGCM_PARM_TYPE_PAGELIST = 10,
> + /* Ensure the enum is a 32 bit data-type */
> + VMMDEV_HGCM_PARM_TYPE_SIZEHACK = 0x7fffffff
> +};
> +
> +/** HGCM function parameter, 32-bit client. */
> +struct vmmdev_hgcm_function_parameter32 {
> + enum vmmdev_hgcm_function_parameter_type type;
> + union {
> + __u32 value32;
> + __u64 value64;
> + struct {
> + __u32 size;
> + union {
> + __u32 phys_addr;
> + __u32 linear_addr;
> + } u;
> + } pointer;
> + struct {
> + /** Size of the buffer described by the page list. */
> + __u32 size;
> + /** Relative to the request header. */
> + __u32 offset;
> + } page_list;
> + } u;
> +} __packed;
> +VMMDEV_ASSERT_SIZE(vmmdev_hgcm_function_parameter32, 4 + 8);
> +
> +/** HGCM function parameter, 64-bit client. */
> +struct vmmdev_hgcm_function_parameter64 {
> + enum vmmdev_hgcm_function_parameter_type type;
> + union {
> + __u32 value32;
> + __u64 value64;
> + struct {
> + __u32 size;
> + union {
> + __u64 phys_addr;
> + __u64 linear_addr;
> + } u;
> + } __packed pointer;
> + struct {
> + /** Size of the buffer described by the page list. */
> + __u32 size;
> + /** Relative to the request header. */
> + __u32 offset;
> + } page_list;
> + } __packed u;
> +} __packed;
> +VMMDEV_ASSERT_SIZE(vmmdev_hgcm_function_parameter64, 4 + 12);
> +
> +#if __BITS_PER_LONG == 64
> +#define vmmdev_hgcm_function_parameter vmmdev_hgcm_function_parameter64
> +#else
> +#define vmmdev_hgcm_function_parameter vmmdev_hgcm_function_parameter32
> +#endif
> +
> +#define VMMDEV_HGCM_F_PARM_DIRECTION_NONE 0x00000000U
> +#define VMMDEV_HGCM_F_PARM_DIRECTION_TO_HOST 0x00000001U
> +#define VMMDEV_HGCM_F_PARM_DIRECTION_FROM_HOST 0x00000002U
> +#define VMMDEV_HGCM_F_PARM_DIRECTION_BOTH 0x00000003U
> +
> +/**
> + * struct vmmdev_hgcm_pagelist - VMMDEV_HGCM_PARM_TYPE_PAGELIST parameters
> + * point to this structure to actually describe the buffer.
> + */
> +struct vmmdev_hgcm_pagelist {
> + __u32 flags; /** VMMDEV_HGCM_F_PARM_*. */
> + __u16 offset_first_page; /** Data offset in the first page. */
> + __u16 page_count; /** Number of pages. */
> + __u64 pages[1]; /** Page addresses. */
> +};
> +VMMDEV_ASSERT_SIZE(vmmdev_hgcm_pagelist, 4 + 2 + 2 + 8);
> +
> +#endif
> diff --git a/include/uapi/linux/vboxguest.h b/include/uapi/linux/vboxguest.h
> new file mode 100644
> index 000000000000..d201eb080df2
> --- /dev/null
> +++ b/include/uapi/linux/vboxguest.h
> @@ -0,0 +1,341 @@
> +/*
> + * VBoxGuest - VirtualBox Guest Additions Driver Interface.
> + *
> + * Copyright (C) 2006-2016 Oracle Corporation
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + * The contents of this file may alternatively be used under the terms
> + * of the Common Development and Distribution License Version 1.0
> + * (CDDL) only, 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.
> + */
> +
> +#ifndef __UAPI_VBOXGUEST_H__
> +#define __UAPI_VBOXGUEST_H__
> +
> +#include <asm/bitsperlong.h>
> +#include <linux/ioctl.h>
> +#include <linux/vbox_err.h>
> +#include <linux/vbox_vmmdev_types.h>
> +
> +/* Version of vbg_ioctl_hdr structure. */
> +#define VBG_IOCTL_HDR_VERSION 0x10001
> +/* Default request type. Use this for non-VMMDev requests. */
> +#define VBG_IOCTL_HDR_TYPE_DEFAULT 0
> +
> +/**
> + * Common ioctl header.
> + *
> + * This is a mirror of vmmdev_request_header to prevent duplicating data and
> + * needing to verify things multiple times.
> + */
> +struct vbg_ioctl_hdr {
> + /** IN: The request input size, and output size if size_out is zero. */
> + __u32 size_in;
> + /** IN: Structure version (VBG_IOCTL_HDR_VERSION) */
> + __u32 version;
> + /** IN: The VMMDev request type or VBG_IOCTL_HDR_TYPE_DEFAULT. */
> + __u32 type;
> + /**
> + * OUT: The VBox status code of the operation, out direction only.
> + * This is a VINF_ or VERR_ value as defined in vbox_err.h.
> + */
> + __s32 rc;
> + /** IN: Output size. Set to zero to use size_in as output size. */
> + __u32 size_out;
> + /** Reserved, MBZ. */
> + __u32 reserved;
> +};
> +VMMDEV_ASSERT_SIZE(vbg_ioctl_hdr, 24);
> +
> +
> +/*
> + * The VBoxGuest I/O control version.
> + *
> + * As usual, the high word contains the major version and changes to it
> + * signifies incompatible changes.
> + *
> + * The lower word is the minor version number, it is increased when new
> + * functions are added or existing changed in a backwards compatible manner.
> + */
> +#define VBG_IOC_VERSION 0x00010000u
> +
> +/**
> + * VBG_IOCTL_DRIVER_VERSION_INFO data structure
> + *
> + * Note VBG_IOCTL_DRIVER_VERSION_INFO may switch the session to a backwards
> + * compatible interface version if uClientVersion indicates older client code.
> + */
> +struct vbg_ioctl_driver_version_info {
> + /** The header. */
> + struct vbg_ioctl_hdr hdr;
> + union {
> + struct {
> + /** Requested interface version (VBG_IOC_VERSION). */
> + __u32 req_version;
> + /**
> + * Minimum interface version number (typically the
> + * major version part of VBG_IOC_VERSION).
> + */
> + __u32 min_version;
> + /** Reserved, MBZ. */
> + __u32 reserved1;
> + /** Reserved, MBZ. */
> + __u32 reserved2;
> + } in;
> + struct {
> + /** Version for this session (typ. VBG_IOC_VERSION). */
> + __u32 session_version;
> + /** Version of the IDC interface (VBG_IOC_VERSION). */
> + __u32 driver_version;
> + /** The SVN revision of the driver, or 0. */
> + __u32 driver_revision;
> + /** Reserved \#1 (zero until defined). */
> + __u32 reserved1;
> + /** Reserved \#2 (zero until defined). */
> + __u32 reserved2;
> + } out;
> + } u;
> +};
> +VMMDEV_ASSERT_SIZE(vbg_ioctl_driver_version_info, 24 + 20);
> +
> +#define VBG_IOCTL_DRIVER_VERSION_INFO \
> + _IOWR('V', 0, struct vbg_ioctl_driver_version_info)
> +
> +
> +/* IOCTL to perform a VMM Device request less than 1KB in size. */
> +#define VBG_IOCTL_VMMDEV_REQUEST(s) _IOC(_IOC_READ | _IOC_WRITE, 'V', 2, s)
> +
> +
> +/* IOCTL to perform a VMM Device request larger then 1KB. */
> +#define VBG_IOCTL_VMMDEV_REQUEST_BIG _IOC(_IOC_READ | _IOC_WRITE, 'V', 3, 0)
> +
> +
> +/** VBG_IOCTL_HGCM_CONNECT data structure. */
> +struct vbg_ioctl_hgcm_connect {
> + struct vbg_ioctl_hdr hdr;
> + union {
> + struct {
> + struct vmmdev_hgcm_service_location loc;
> + } in;
> + struct {
> + __u32 client_id;
> + } out;
> + } u;
> +};
> +VMMDEV_ASSERT_SIZE(vbg_ioctl_hgcm_connect, 24 + 132);
> +
> +#define VBG_IOCTL_HGCM_CONNECT \
> + _IOWR('V', 4, struct vbg_ioctl_hgcm_connect)
> +
> +
> +/** VBG_IOCTL_HGCM_DISCONNECT data structure. */
> +struct vbg_ioctl_hgcm_disconnect {
> + struct vbg_ioctl_hdr hdr;
> + union {
> + struct {
> + __u32 client_id;
> + } in;
> + } u;
> +};

Another single-member union.

> +VMMDEV_ASSERT_SIZE(vbg_ioctl_hgcm_disconnect, 24 + 4);
> +
> +#define VBG_IOCTL_HGCM_DISCONNECT \
> + _IOWR('V', 5, struct vbg_ioctl_hgcm_disconnect)
> +
> +
> +/** VBG_IOCTL_HGCM_CALL data structure. */
> +struct vbg_ioctl_hgcm_call {
> + /** The header. */
> + struct vbg_ioctl_hdr hdr;
> + /** Input: The id of the caller. */
> + __u32 client_id;
> + /** Input: Function number. */
> + __u32 function;
> + /**
> + * Input: How long to wait (milliseconds) for completion before
> + * cancelling the call. Set to -1 to wait indefinitely.
> + */
> + __u32 timeout_ms;
> + /** Interruptable flag, ignored for userspace calls. */
> + __u8 interruptible;
> + /** Explicit padding, MBZ. */
> + __u8 reserved;
> + /**
> + * Input: How many parameters following this structure.
> + *
> + * The parameters are either HGCMFunctionParameter64 or 32,
> + * depending on whether we're receiving a 64-bit or 32-bit request.
> + *
> + * The current maximum is 61 parameters (given a 1KB max request size,
> + * and a 64-bit parameter size of 16 bytes).
> + */
> + __u16 parm_count;
> + /*
> + * Parameters follow in form:
> + * struct hgcm_function_parameter<32|64> parms[parm_count]
> + */
> +};
> +VMMDEV_ASSERT_SIZE(vbg_ioctl_hgcm_call, 24 + 16);
> +
> +#define VBG_IOCTL_HGCM_CALL_32(s) _IOC(_IOC_READ | _IOC_WRITE, 'V', 6, s)
> +#define VBG_IOCTL_HGCM_CALL_64(s) _IOC(_IOC_READ | _IOC_WRITE, 'V', 7, s)
> +#if __BITS_PER_LONG == 64
> +#define VBG_IOCTL_HGCM_CALL(s) VBG_IOCTL_HGCM_CALL_64(s)
> +#else
> +#define VBG_IOCTL_HGCM_CALL(s) VBG_IOCTL_HGCM_CALL_32(s)
> +#endif
> +
> +
> +/** VBG_IOCTL_LOG data structure. */
> +struct vbg_ioctl_log {
> + /** The header. */
> + struct vbg_ioctl_hdr hdr;
> + union {
> + struct {
> + /**
> + * The log message, this may be zero terminated. If it
> + * is not zero terminated then the length is determined
> + * from the input size.
> + */
> + char msg[1];
> + } in;
> + } u;
> +};

Amother single-member union.

> +
> +#define VBG_IOCTL_LOG(s) _IOC(_IOC_READ | _IOC_WRITE, 'V', 9, s)
> +
> +
> +/** VBG_IOCTL_WAIT_FOR_EVENTS data structure. */
> +struct vbg_ioctl_wait_for_events {
> + /** The header. */
> + struct vbg_ioctl_hdr hdr;
> + union {
> + struct {
> + /** Timeout in milliseconds. */
> + __u32 timeout_ms;
> + /** Events to wait for. */
> + __u32 events;
> + } in;
> + struct {
> + /** Events that occurred. */
> + __u32 events;
> + } out;
> + } u;
> +};
> +VMMDEV_ASSERT_SIZE(vbg_ioctl_wait_for_events, 24 + 8);
> +
> +#define VBG_IOCTL_WAIT_FOR_EVENTS \
> + _IOWR('V', 10, struct vbg_ioctl_wait_for_events)
> +
> +
> +/*
> + * IOCTL to VBoxGuest to interrupt (cancel) any pending
> + * VBG_IOCTL_WAIT_FOR_EVENTS and return.
> + *
> + * Handled inside the vboxguest driver and not seen by the host at all.
> + * After calling this, VBG_IOCTL_WAIT_FOR_EVENTS should no longer be called in
> + * the same session. Any VBOXGUEST_IOCTL_WAITEVENT calls in the same session
> + * done after calling this will directly exit with -EINTR.
> + */
> +#define VBG_IOCTL_INTERRUPT_ALL_WAIT_FOR_EVENTS \
> + _IOWR('V', 11, struct vbg_ioctl_hdr)
> +
> +
> +/** VBG_IOCTL_CHANGE_FILTER_MASK data structure. */
> +struct vbg_ioctl_change_filter {
> + /** The header. */
> + struct vbg_ioctl_hdr hdr;
> + union {
> + struct {
> + /** Flags to set. */
> + __u32 or_mask;
> + /** Flags to remove. */
> + __u32 not_mask;
> + } in;
> + } u;
> +};

Amother single-member union.

> +VMMDEV_ASSERT_SIZE(vbg_ioctl_change_filter, 24 + 8);
> +
> +/* IOCTL to VBoxGuest to control the event filter mask. */
> +#define VBG_IOCTL_CHANGE_FILTER_MASK \
> + _IOWR('V', 12, struct vbg_ioctl_change_filter)
> +
> +
> +/** VBG_IOCTL_CHANGE_GUEST_CAPABILITIES data structure. */
> +struct vbg_ioctl_set_guest_caps {
> + /** The header. */
> + struct vbg_ioctl_hdr hdr;
> + union {
> + struct {
> + /** Capabilities to set (VMMDEV_GUEST_SUPPORTS_XXX). */
> + __u32 or_mask;
> + /** Capabilities to drop (VMMDEV_GUEST_SUPPORTS_XXX). */
> + __u32 not_mask;
> + } in;
> + struct {
> + /** Capabilities held by the session after the call. */
> + __u32 session_caps;
> + /** Capabilities for all the sessions after the call. */
> + __u32 global_caps;
> + } out;
> + } u;
> +};
> +VMMDEV_ASSERT_SIZE(vbg_ioctl_set_guest_caps, 24 + 8);
> +
> +#define VBG_IOCTL_CHANGE_GUEST_CAPABILITIES \
> + _IOWR('V', 14, struct vbg_ioctl_set_guest_caps)
> +
> +
> +/** VBG_IOCTL_CHECK_BALLOON data structure. */
> +struct vbg_ioctl_check_balloon {
> + /** The header. */
> + struct vbg_ioctl_hdr hdr;
> + union {
> + struct {
> + /** The size of the balloon in chunks of 1MB. */
> + __u32 balloon_chunks;
> + /**
> + * false = handled in R0, no further action required.
> + * true = allocate balloon memory in R3.
> + */
> + __u8 handle_in_r3;
> + /** Explicit padding, MBZ. */
> + __u8 padding[3];
> + } out;
> + } u;
> +};
> +VMMDEV_ASSERT_SIZE(vbg_ioctl_check_balloon, 24 + 8);
> +
> +/*
> + * IOCTL to check memory ballooning.
> + *
> + * The guest kernel module will ask the host for the current size of the
> + * balloon and adjust the size. Or it will set handle_in_r3 = true and R3 is
> + * responsible for allocating memory and calling VBG_IOCTL_CHANGE_BALLOON.
> + */
> +#define VBG_IOCTL_CHECK_BALLOON \
> + _IOWR('V', 17, struct vbg_ioctl_check_balloon)
> +
> +
> +/** VBG_IOCTL_WRITE_CORE_DUMP data structure. */
> +struct vbg_ioctl_write_coredump {
> + struct vbg_ioctl_hdr hdr;
> + union {
> + struct {
> + __u32 flags; /** Flags (reserved, MBZ). */
> + } in;
> + } u;
> +};
> +VMMDEV_ASSERT_SIZE(vbg_ioctl_write_coredump, 24 + 4);

Another single-member union.


> +
> +#define VBG_IOCTL_WRITE_CORE_DUMP \
> + _IOWR('V', 19, struct vbg_ioctl_write_coredump)
> +
> +#endif
>

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