headers/private/file_systems/ram_disk/ram_disk.h

   1 /*
   2  * Copyright 2013, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _PRIVATE_FILE_SYSTEMS_RAM_DISK_RAM_DISK_H
   6 #define _PRIVATE_FILE_SYSTEMS_RAM_DISK_RAM_DISK_H
   7
   8
   9 #include <Drivers.h>
  10 #include <StorageDefs.h>
  11
  12
  13 #define RAM_DISK_CONTROL_DEVICE_NAME    "disk/virtual/ram/control"
  14 #define RAM_DISK_RAW_DEVICE_BASE_NAME   "disk/virtual/ram"
  15
  16
  17 enum {
  18         RAM_DISK_IOCTL_REGISTER         = B_DEVICE_OP_CODES_END + 1,
  19         RAM_DISK_IOCTL_UNREGISTER,
  20         RAM_DISK_IOCTL_FLUSH,
  21         RAM_DISK_IOCTL_INFO
  22 };
  23
  24
  25 struct ram_disk_ioctl_register {
  26         uint64  size;
  27         char    path[B_PATH_NAME_LENGTH];
  28
  29         // return value
  30         int32   id;
  31 };
  32
  33
  34 struct ram_disk_ioctl_unregister {
  35         int32   id;
  36 };
  37
  38
  39 struct ram_disk_ioctl_info {
  40         // return values
  41         int32   id;
  42         uint64  size;
  43         char    path[B_PATH_NAME_LENGTH];
  44 };
  45
  46
  47 #endif  // _PRIVATE_FILE_SYSTEMS_RAM_DISK_RAM_DISK_H