include/linux/vbox_utils.h

   1 /* SPDX-License-Identifier: (GPL-2.0 OR CDDL-1.0) */
   2 /* Copyright (C) 2006-2016 Oracle Corporation */
   3
   4 #ifndef __VBOX_UTILS_H__
   5 #define __VBOX_UTILS_H__
   6
   7 #include <linux/printk.h>
   8 #include <linux/vbox_vmmdev_types.h>
   9
  10 struct vbg_dev;
  11
  12 /**
  13  * vboxguest logging functions, these log both to the backdoor and call
  14  * the equivalent kernel pr_foo function.
  15  */
  16 __printf(1, 2) void vbg_info(const char *fmt, ...);
  17 __printf(1, 2) void vbg_warn(const char *fmt, ...);
  18 __printf(1, 2) void vbg_err(const char *fmt, ...);
  19
  20 /* Only use backdoor logging for non-dynamic debug builds */
  21 #if defined(DEBUG) && !defined(CONFIG_DYNAMIC_DEBUG)
  22 __printf(1, 2) void vbg_debug(const char *fmt, ...);
  23 #else
  24 #define vbg_debug pr_debug
  25 #endif
  26
  27 int vbg_hgcm_connect(struct vbg_dev *gdev, u32 requestor,
  28                      struct vmmdev_hgcm_service_location *loc,
  29                      u32 *client_id, int *vbox_status);
  30
  31 int vbg_hgcm_disconnect(struct vbg_dev *gdev, u32 requestor,
  32                         u32 client_id, int *vbox_status);
  33
  34 int vbg_hgcm_call(struct vbg_dev *gdev, u32 requestor, u32 client_id,
  35                   u32 function, u32 timeout_ms,
  36                   struct vmmdev_hgcm_function_parameter *parms, u32 parm_count,
  37                   int *vbox_status);
  38
  39 /**
  40  * Convert a VirtualBox status code to a standard Linux kernel return value.
  41  * Return: 0 or negative errno value.
  42  * @rc:                 VirtualBox status code to convert.
  43  */
  44 int vbg_status_code_to_errno(int rc);
  45
  46 /**
  47  * Helper for the vboxsf driver to get a reference to the guest device.
  48  * Return: a pointer to the gdev; or a ERR_PTR value on error.
  49  */
  50 struct vbg_dev *vbg_get_gdev(void);
  51
  52 /**
  53  * Helper for the vboxsf driver to put a guest device reference.
  54  * @gdev:               Reference returned by vbg_get_gdev to put.
  55  */
  56 void vbg_put_gdev(struct vbg_dev *gdev);
  57
  58 #endif