/* This software is part of the Haiku distribution and is covered
** by the MIT License.
*/
#ifndef VIRTUAL_DRIVE_H
#define VIRTUAL_DRIVE_H

#include <Drivers.h>

// virtualdrive device directory and control device, "/dev" relative
#define VIRTUAL_DRIVE_DIRECTORY_REL                     "misc/virtualdrive"
#define VIRTUAL_DRIVE_CONTROL_DEVICE_REL        VIRTUAL_DRIVE_DIRECTORY_REL \
                                                                                        "/control"
// virtualdrive device directory and control device, absolute
#define VIRTUAL_DRIVE_DIRECTORY                         "/dev/" \
                                                                                        VIRTUAL_DRIVE_DIRECTORY_REL
#define VIRTUAL_DRIVE_CONTROL_DEVICE            "/dev/" \
                                                                                        VIRTUAL_DRIVE_CONTROL_DEVICE_REL

#define VIRTUAL_DRIVE_IOCTL_BASE        (B_DEVICE_OP_CODES_END + 10001)

enum {
        VIRTUAL_DRIVE_REGISTER_FILE     = VIRTUAL_DRIVE_IOCTL_BASE,
                // on control device: virtual_drive_info*, fills in device_name
        VIRTUAL_DRIVE_UNREGISTER_FILE,
                // on data device: none
        VIRTUAL_DRIVE_GET_INFO,
                // on data device: virtual_drive_info*
};

#define VIRTUAL_DRIVE_MAGIC     'VdIn'

typedef struct virtual_drive_info {
        uint32                  magic;
        size_t                  drive_info_size;
        char                    file_name[B_PATH_NAME_LENGTH];
        char                    device_name[B_PATH_NAME_LENGTH];
        device_geometry geometry;
        bool                    use_geometry;
        bool                    halted;         // only valid for VIRTUAL_DRIVE_GET_INFO
} virtual_drive_info;

#endif  // VIRTUAL_DRIVE_H