text: /*
   *   fs/cifs/cifs_ioctl.h
   *
   *   Structure definitions for io control for cifs/smb3
   *
   *   Copyright (c) 2015 Steve French <steve.french@primarydata.com>
   *
   *   This library is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU Lesser General Public License as published
   *   by the Free Software Foundation; either version 2.1 of the License, or
   *   (at your option) any later version.
   *
   *   This library is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
   *   the GNU Lesser General Public License for more details.
   *
   */
  
  struct smb_mnt_fs_info {
  	__u32	version; /* 0001 */
  	__u16	protocol_id;
  	__u16	tcon_flags;
  	__u32	vol_serial_number;
  	__u32	vol_create_time;
  	__u32	share_caps;
  	__u32	share_flags;
  	__u32	sector_flags;
  	__u32	optimal_sector_size;
  	__u32	max_bytes_chunk;
  	__u32	fs_attributes;
  	__u32	max_path_component;
  	__u32	device_type;
  	__u32	device_characteristics;
  	__u32	maximal_access;
  	__u64   cifs_posix_caps;
  } __packed;
  
  struct smb_snapshot_array {
  	__u32	number_of_snapshots;
  	__u32	number_of_snapshots_returned;
  	__u32	snapshot_array_size;
  	/*	snapshots[]; */
  } __packed;
  
  /* query_info flags */
  #define PASSTHRU_QUERY_INFO	0x00000000
  #define PASSTHRU_FSCTL		0x00000001
  #define PASSTHRU_SET_INFO	0x00000002
  struct smb_query_info {
  	__u32   info_type;
  	__u32   file_info_class;
  	__u32   additional_information;
  	__u32   flags;
  	__u32	input_buffer_length;
  	__u32	output_buffer_length;
  	/* char buffer[]; */
  } __packed;
  
  struct smb3_key_debug_info {
  	__u64	Suid;
  	__u16	cipher_type;
  	__u8	auth_key[16]; /* SMB2_NTLMV2_SESSKEY_SIZE */
  	__u8	smb3encryptionkey[SMB3_SIGN_KEY_SIZE];
  	__u8	smb3decryptionkey[SMB3_SIGN_KEY_SIZE];
  } __packed;
  
  #define CIFS_IOCTL_MAGIC	0xCF
  #define CIFS_IOC_COPYCHUNK_FILE	_IOW(CIFS_IOCTL_MAGIC, 3, int)
  #define CIFS_IOC_SET_INTEGRITY  _IO(CIFS_IOCTL_MAGIC, 4)
  #define CIFS_IOC_GET_MNT_INFO _IOR(CIFS_IOCTL_MAGIC, 5, struct smb_mnt_fs_info)
  #define CIFS_ENUMERATE_SNAPSHOTS _IOR(CIFS_IOCTL_MAGIC, 6, struct smb_snapshot_array)
  #define CIFS_QUERY_INFO _IOWR(CIFS_IOCTL_MAGIC, 7, struct smb_query_info)
  #define CIFS_DUMP_KEY _IOWR(CIFS_IOCTL_MAGIC, 8, struct smb3_key_debug_info)
  