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 __printf(1, 2) void vbg_err_ratelimited(const char *fmt, ...);
  20
  21 /* Only use backdoor logging for non-dynamic debug builds */
  22 #if defined(DEBUG) && !defined(CONFIG_DYNAMIC_DEBUG)
  23 __printf(1, 2) void vbg_debug(const char *fmt, ...);
  24 #else
  25 #define vbg_debug pr_debug
  26 #endif
  27
  28 int vbg_hgcm_connect(struct vbg_dev *gdev, u32 requestor,
  29                      struct vmmdev_hgcm_service_location *loc,
  30                      u32 *client_id, int *vbox_status);
  31
  32 int vbg_hgcm_disconnect(struct vbg_dev *gdev, u32 requestor,
  33                         u32 client_id, int *vbox_status);
  34
  35 int vbg_hgcm_call(struct vbg_dev *gdev, u32 requestor, u32 client_id,
  36                   u32 function, u32 timeout_ms,
  37                   struct vmmdev_hgcm_function_parameter *parms, u32 parm_count,
  38                   int *vbox_status);
  39
  40 /**
  41  * Convert a VirtualBox status code to a standard Linux kernel return value.
  42  * Return: 0 or negative errno value.
  43  * @rc:                 VirtualBox status code to convert.
  44  */
  45 int vbg_status_code_to_errno(int rc);
  46
  47 /**
  48  * Helper for the vboxsf driver to get a reference to the guest device.
  49  * Return: a pointer to the gdev; or a ERR_PTR value on error.
  50  */
  51 struct vbg_dev *vbg_get_gdev(void);
  52
  53 /**
  54  * Helper for the vboxsf driver to put a guest device reference.
  55  * @gdev:               Reference returned by vbg_get_gdev to put.
  56  */
  57 void vbg_put_gdev(struct vbg_dev *gdev);
  58
  59 #endif