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 59