/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2010 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. * * Copyright 2017 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2016 by Delphix. All rights reserved. */ #ifndef _SMBSRV_NTIFS_H #define _SMBSRV_NTIFS_H /* * This file provides definitions compatible with the NT Installable * File System (IFS) interface. This header file also defines the Security * Descriptor module from Windows. */ #ifdef __cplusplus extern "C" { #endif #include #include #include /* * The Volume and Directory bits are for SMB rather than NT. * NT has an explicit Normal bit; this bit is implied in SMB * when the Hidden, System and Directory bits are not set. * * File attributes and creation flags share the same 32-bit * space. */ #define FILE_ATTRIBUTE_READONLY 0x00000001 #define FILE_ATTRIBUTE_HIDDEN 0x00000002 #define FILE_ATTRIBUTE_SYSTEM 0x00000004 #define FILE_ATTRIBUTE_VOLUME 0x00000008 #define FILE_ATTRIBUTE_DIRECTORY 0x00000010 #define FILE_ATTRIBUTE_ARCHIVE 0x00000020 #define FILE_ATTRIBUTE_DEVICE 0x00000040 #define FILE_ATTRIBUTE_NORMAL 0x00000080 #define FILE_ATTRIBUTE_TEMPORARY 0x00000100 #define FILE_ATTRIBUTE_SPARSE_FILE 0x00000200 #define FILE_ATTRIBUTE_REPARSE_POINT 0x00000400 #define FILE_ATTRIBUTE_COMPRESSED 0x00000800 #define FILE_ATTRIBUTE_OFFLINE 0x00001000 #define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED 0x00002000 #define FILE_ATTRIBUTE_ENCRYPTED 0x00004000 #define FILE_ATTRIBUTE_VIRTUAL 0x00010000 #define FILE_FLAG_OPEN_NO_RECALL 0x00100000 #define FILE_FLAG_OPEN_REPARSE_POINT 0x00200000 #define FILE_FLAG_POSIX_SEMANTICS 0x01000000 #define FILE_FLAG_BACKUP_SEMANTICS 0x02000000 #define FILE_FLAG_DELETE_ON_CLOSE 0x04000000 #define FILE_FLAG_SEQUENTIAL_SCAN 0x08000000 #define FILE_FLAG_RANDOM_ACCESS 0x10000000 #define FILE_FLAG_NO_BUFFERING 0x20000000 #define FILE_FLAG_OVERLAPPED 0x40000000 #define FILE_FLAG_WRITE_THROUGH 0x80000000 #define FILE_ATTRIBUTE_VALID_FLAGS 0x00001fb7 #define FILE_ATTRIBUTE_VALID_SET_FLAGS 0x00001fa7 #define FILE_ATTRIBUTE_MASK 0x00003FFF /* * The create/open option flags: used in NtCreateAndx and NtTransactCreate * SMB requests. * * The CreateOptions specify the options to be applied when creating or * opening the file, as a compatible combination of the following flags: * * FILE_DIRECTORY_FILE * The file being created or opened is a directory file. With this * flag, the Disposition parameter must be set to one of FILE_CREATE, * FILE_OPEN, or FILE_OPEN_IF. With this flag, other compatible * CreateOptions flags include only the following: * FILE_SYNCHRONOUS_IO_ALERT * FILE_SYNCHRONOUS_IO_NONALERT * FILE_WRITE_THROUGH * FILE_OPEN_FOR_BACKUP_INTENT * FILE_OPEN_BY_FILE_ID * * FILE_NON_DIRECTORY_FILE * The file being opened must not be a directory file or this call * will fail. The file object being opened can represent a data file, * a logical, virtual, or physical device, or a volume. * * FILE_WRITE_THROUGH * System services, FSDs, and drivers that write data to the file must * actually transfer the data into the file before any requested write * operation is considered complete. This flag is automatically set if * the CreateOptions flag FILE_NO_INTERMEDIATE _BUFFERING is set. * * FILE_SEQUENTIAL_ONLY * All accesses to the file will be sequential. * * FILE_RANDOM_ACCESS * Accesses to the file can be random, so no sequential read-ahead * operations should be performed on the file by FSDs or the system. * FILE_NO_INTERMEDIATE _BUFFERING The file cannot be cached or * buffered in a driver's internal buffers. This flag is incompatible * with the DesiredAccess FILE_APPEND_DATA flag. * * FILE_SYNCHRONOUS_IO_ALERT * All operations on the file are performed synchronously. Any wait * on behalf of the caller is subject to premature termination from * alerts. This flag also causes the I/O system to maintain the file * position context. If this flag is set, the DesiredAccess * SYNCHRONIZE flag also must be set. * * FILE_SYNCHRONOUS_IO _NONALERT * All operations on the file are performed synchronously. Waits in * the system to synchronize I/O queuing and completion are not subject * to alerts. This flag also causes the I/O system to maintain the file * position context. If this flag is set, the DesiredAccess SYNCHRONIZE * flag also must be set. * * FILE_CREATE_TREE _CONNECTION * Create a tree connection for this file in order to open it over the * network. This flag is irrelevant to device and intermediate drivers. * * FILE_COMPLETE_IF_OPLOCKED * Complete this operation immediately with an alternate success code * if the target file is oplocked, rather than blocking the caller's * thread. If the file is oplocked, another caller already has access * to the file over the network. This flag is irrelevant to device and * intermediate drivers. * * FILE_NO_EA_KNOWLEDGE * If the extended attributes on an existing file being opened indicate * that the caller must understand EAs to properly interpret the file, * fail this request because the caller does not understand how to deal * with EAs. Device and intermediate drivers can ignore this flag. * * FILE_DELETE_ON_CLOSE * Delete the file when the last reference to it is passed to close. * * FILE_OPEN_BY_FILE_ID * The file name contains the name of a device and a 64-bit ID to * be used to open the file. This flag is irrelevant to device and * intermediate drivers. * * FILE_OPEN_FOR_BACKUP _INTENT * The file is being opened for backup intent, hence, the system should * check for certain access rights and grant the caller the appropriate * accesses to the file before checking the input DesiredAccess against * the file's security descriptor. This flag is irrelevant to device * and intermediate drivers. */ #define FILE_DIRECTORY_FILE 0x00000001 #define FILE_WRITE_THROUGH 0x00000002 #define FILE_SEQUENTIAL_ONLY 0x00000004 #define FILE_NO_INTERMEDIATE_BUFFERING 0x00000008 #define FILE_SYNCHRONOUS_IO_ALERT 0x00000010 #define FILE_SYNCHRONOUS_IO_NONALERT 0x00000020 #define FILE_NON_DIRECTORY_FILE 0x00000040 #define FILE_CREATE_TREE_CONNECTION 0x00000080 #define FILE_COMPLETE_IF_OPLOCKED 0x00000100 #define FILE_NO_EA_KNOWLEDGE 0x00000200 /* UNUSED 0x00000400 */ #define FILE_RANDOM_ACCESS 0x00000800 #define FILE_DELETE_ON_CLOSE 0x00001000 #define FILE_OPEN_BY_FILE_ID 0x00002000 #define FILE_OPEN_FOR_BACKUP_INTENT 0x00004000 #define FILE_NO_COMPRESSION 0x00008000 #define FILE_RESERVE_OPFILTER 0x00100000 #define FILE_RESERVED0 0x00200000 #define FILE_RESERVED1 0x00400000 #define FILE_RESERVED2 0x00800000 #define FILE_VALID_OPTION_FLAGS 0x00ffffff #define FILE_VALID_PIPE_OPTION_FLAGS 0x00000032 #define FILE_VALID_MAILSLOT_OPTION_FLAGS 0x00000032 #define FILE_VALID_SET_FLAGS 0x00000036 /* * "Granular" oplock flags; [MS-FSA], WinDDK/ntifs.h * Same as smb2.h SMB2_LEASE_... */ #define OPLOCK_LEVEL_CACHE_READ 0x01 #define OPLOCK_LEVEL_CACHE_HANDLE 0x02 #define OPLOCK_LEVEL_CACHE_WRITE 0x04 #define OPLOCK_LEVEL_CACHE_MASK 0x07 /* * [MS-FSA] oplock types (also "levels") */ #define OPLOCK_LEVEL_NONE 0 #define OPLOCK_LEVEL_TWO 0x100 #define OPLOCK_LEVEL_ONE 0x200 #define OPLOCK_LEVEL_BATCH 0x400 #define OPLOCK_LEVEL_GRANULAR 0x800 #define OPLOCK_LEVEL_TYPE_MASK 0xf00 /* * Define the file information class values used by the NT DDK and HAL. */ typedef enum _FILE_INFORMATION_CLASS { FileDirectoryInformation = 1, FileFullDirectoryInformation, /* 2 */ FileBothDirectoryInformation, /* 3 */ FileBasicInformation, /* 4 */ FileStandardInformation, /* 5 */ FileInternalInformation, /* 6 */ FileEaInformation, /* 7 */ FileAccessInformation, /* 8 */ FileNameInformation, /* 9 */ FileRenameInformation, /* 10 */ FileLinkInformation, /* 11 */ FileNamesInformation, /* 12 */ FileDispositionInformation, /* 13 */ FilePositionInformation, /* 14 */ FileFullEaInformation, /* 15 */ FileModeInformation, /* 16 */ FileAlignmentInformation, /* 17 */ FileAllInformation, /* 18 */ FileAllocationInformation, /* 19 */ FileEndOfFileInformation, /* 20 */ FileAlternateNameInformation, /* 21 */ FileStreamInformation, /* 22 */ FilePipeInformation, /* 23 */ FilePipeLocalInformation, /* 24 */ FilePipeRemoteInformation, /* 25 */ FileMailslotQueryInformation, /* 26 */ FileMailslotSetInformation, /* 27 */ FileCompressionInformation, /* 28 */ FileObjectIdInformation, /* 29 */ FileCompletionInformation, /* 30 */ FileMoveClusterInformation, /* 31 */ FileQuotaInformation, /* 32 */ FileReparsePointInformation, /* 33 */ FileNetworkOpenInformation, /* 34 */ FileAttributeTagInformation, /* 35 */ FileTrackingInformation, /* 36 */ FileIdBothDirectoryInformation, /* 37 */ FileIdFullDirectoryInformation, /* 38 */ FileValidDataLengthInformation, /* 39 */ FileShortNameInformation, /* 40 */ FileInformationReserved41, /* 41 */ FileInformationReserved42, /* 42 */ FileInformationReserved43, /* 43 */ FileSfioReserveInformation, /* 44 */ FileSfioVolumeInformation, /* 45 */ FileHardLinkInformation, /* 46 */ FileInformationReserved47, /* 47 */ FileNormalizedNameInformation, /* 48 */ FileInformationReserved49, /* 49 */ FileIdGlobalTxDirectoryInformation, /* 50 */ FileInformationReserved51, /* 51 */ FileInformationReserved52, /* 52 */ FileInformationReserved53, /* 53 */ FileStandardLinkInformation, /* 54 */ FileMaximumInformation } FILE_INFORMATION_CLASS; /* * Define the file system information class values. */ typedef enum _FILE_FS_INFORMATION_CLASS { FileFsVolumeInformation = 1, FileFsLabelInformation, /* 2 */ FileFsSizeInformation, /* 3 */ FileFsDeviceInformation, /* 4 */ FileFsAttributeInformation, /* 5 */ FileFsControlInformation, /* 6 */ FileFsFullSizeInformation, /* 7 */ FileFsObjectIdInformation, /* 8 */ FileFsDriverPathInformation /* 9 */ } FILE_FS_INFORMATION_CLASS; /* * Discretionary Access Control List (DACL) * * A Discretionary Access Control List (DACL), often abbreviated to * ACL, is a list of access controls which either allow or deny access * for users or groups to a resource. There is a list header followed * by a list of access control entries (ACE). Each ACE specifies the * access allowed or denied to a single user or group (identified by * a SID). * * There is another access control list object called a System Access * Control List (SACL), which is used to control auditing, but no * support is provideed for SACLs at this time. * * ACL header format: * * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * +-------------------------------+---------------+---------------+ * | AclSize | Sbz1 | AclRevision | * +-------------------------------+---------------+---------------+ * | Sbz2 | AceCount | * +-------------------------------+-------------------------------+ * * AclRevision specifies the revision level of the ACL. This value should * be ACL_REVISION, unless the ACL contains an object-specific ACE, in which * case this value must be ACL_REVISION_DS. All ACEs in an ACL must be at the * same revision level. * * ACE header format: * * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * +---------------+-------+-------+---------------+---------------+ * | AceSize | AceFlags | AceType | * +---------------+-------+-------+---------------+---------------+ * * Access mask format: * * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * +---------------+---------------+-------------------------------+ * |G|G|G|G|Res'd|A| StandardRights| SpecificRights | * |R|W|E|A| |S| | | * +-+-------------+---------------+-------------------------------+ * * typedef struct ACCESS_MASK { * WORD SpecificRights; * BYTE StandardRights; * BYTE AccessSystemAcl : 1; * BYTE Reserved : 3; * BYTE GenericAll : 1; * BYTE GenericExecute : 1; * BYTE GenericWrite : 1; * BYTE GenericRead : 1; * } ACCESS_MASK; * */ #define ACL_REVISION1 1 #define ACL_REVISION2 2 #define MIN_ACL_REVISION2 ACL_REVISION2 #define ACL_REVISION3 3 #define ACL_REVISION4 4 #define MAX_ACL_REVISION ACL_REVISION4 /* * Current ACE and ACL revision Levels */ #define ACE_REVISION 1 #define ACL_REVISION ACL_REVISION2 #define ACL_REVISION_DS ACL_REVISION4 #define ACCESS_ALLOWED_ACE_TYPE 0 #define ACCESS_DENIED_ACE_TYPE 1 #define SYSTEM_AUDIT_ACE_TYPE 2 #define SYSTEM_ALARM_ACE_TYPE 3 /* * se_flags * ---------- * Specifies a set of ACE type-specific control flags. This member can be a * combination of the following values. * * CONTAINER_INHERIT_ACE: Child objects that are containers, such as * directories, inherit the ACE as an effective ACE. The inherited * ACE is inheritable unless the NO_PROPAGATE_INHERIT_ACE bit flag * is also set. * * INHERIT_ONLY_ACE: Indicates an inherit-only ACE which does not control * access to the object to which it is attached. * If this flag is not set, * the ACE is an effective ACE which controls access to the object * to which it is attached. * Both effective and inherit-only ACEs can be inherited * depending on the state of the other inheritance flags. * * INHERITED_ACE: Windows 2000/XP: Indicates that the ACE was inherited. * The system sets this bit when it propagates an * inherited ACE to a child object. * * NO_PROPAGATE_INHERIT_ACE: If the ACE is inherited by a child object, the * system clears the OBJECT_INHERIT_ACE and CONTAINER_INHERIT_ACE * flags in the inherited ACE. * This prevents the ACE from being inherited by * subsequent generations of objects. * * OBJECT_INHERIT_ACE: Noncontainer child objects inherit the ACE as an * effective ACE. For child objects that are containers, * the ACE is inherited as an inherit-only ACE unless the * NO_PROPAGATE_INHERIT_ACE bit flag is also set. */ #define OBJECT_INHERIT_ACE 0x01 #define CONTAINER_INHERIT_ACE 0x02 #define NO_PROPOGATE_INHERIT_ACE 0x04 #define INHERIT_ONLY_ACE 0x08 #define INHERITED_ACE 0x10 #define INHERIT_MASK_ACE 0x1F /* * These flags are only used in system audit or alarm ACEs to * indicate when an audit message should be generated, i.e. * on successful access or on unsuccessful access. */ #define SUCCESSFUL_ACCESS_ACE_FLAG 0x40 #define FAILED_ACCESS_ACE_FLAG 0x80 /* * se_bsize is the size, in bytes, of ACE as it appears on the wire. * se_sln is used to sort the ACL when it's required. */ typedef struct smb_acehdr { uint8_t se_type; uint8_t se_flags; uint16_t se_bsize; } smb_acehdr_t; typedef struct smb_ace { smb_acehdr_t se_hdr; uint32_t se_mask; list_node_t se_sln; smb_sid_t *se_sid; } smb_ace_t; /* * sl_bsize is the size of ACL in bytes as it appears on the wire. */ typedef struct smb_acl { uint8_t sl_revision; uint16_t sl_bsize; uint16_t sl_acecnt; smb_ace_t *sl_aces; list_t sl_sorted; } smb_acl_t; /* * ACE/ACL header size, in byte, as it appears on the wire */ #define SMB_ACE_HDRSIZE 4 #define SMB_ACL_HDRSIZE 8 /* * Security Descriptor (SD) * * Security descriptors provide protection for objects, for example * files and directories. It identifies the owner and primary group * (SIDs) and contains an access control list. When a user tries to * access an object their SID is compared to the permissions in the * DACL to determine if access should be allowed or denied. Note that * this is a simplification because there are other factors, such as * default behavior and privileges to be taken into account (see also * access tokens). * * The boolean flags have the following meanings when set: * * SE_OWNER_DEFAULTED indicates that the SID pointed to by the Owner * field was provided by a defaulting mechanism rather than explicitly * provided by the original provider of the security descriptor. This * may affect the treatment of the SID with respect to inheritance of * an owner. * * SE_GROUP_DEFAULTED indicates that the SID in the Group field was * provided by a defaulting mechanism rather than explicitly provided * by the original provider of the security descriptor. This may * affect the treatment of the SID with respect to inheritance of a * primary group. * * SE_DACL_PRESENT indicates that the security descriptor contains a * discretionary ACL. If this flag is set and the Dacl field of the * SECURITY_DESCRIPTOR is null, then a null ACL is explicitly being * specified. * * SE_DACL_DEFAULTED indicates that the ACL pointed to by the Dacl * field was provided by a defaulting mechanism rather than explicitly * provided by the original provider of the security descriptor. This * may affect the treatment of the ACL with respect to inheritance of * an ACL. This flag is ignored if the DaclPresent flag is not set. * * SE_SACL_PRESENT indicates that the security descriptor contains a * system ACL pointed to by the Sacl field. If this flag is set and * the Sacl field of the SECURITY_DESCRIPTOR is null, then an empty * (but present) ACL is being specified. * * SE_SACL_DEFAULTED indicates that the ACL pointed to by the Sacl * field was provided by a defaulting mechanism rather than explicitly * provided by the original provider of the security descriptor. This * may affect the treatment of the ACL with respect to inheritance of * an ACL. This flag is ignored if the SaclPresent flag is not set. * * SE_DACL_PROTECTED Prevents ACEs set on the DACL of the parent container * (and any objects above the parent container in the directory hierarchy) * from being applied to the object's DACL. * * SE_SACL_PROTECTED Prevents ACEs set on the SACL of the parent container * (and any objects above the parent container in the directory hierarchy) * from being applied to the object's SACL. * * Note that the SE_DACL_PRESENT flag needs to be present to set * SE_DACL_PROTECTED and SE_SACL_PRESENT needs to be present to set * SE_SACL_PROTECTED. * * SE_SELF_RELATIVE indicates that the security descriptor is in self- * relative form. In this form, all fields of the security descriptor * are contiguous in memory and all pointer fields are expressed as * offsets from the beginning of the security descriptor. * * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * +---------------------------------------------------------------+ * | Control |Reserved1 (SBZ)| Revision | * +---------------------------------------------------------------+ * | Owner | * +---------------------------------------------------------------+ * | Group | * +---------------------------------------------------------------+ * | Sacl | * +---------------------------------------------------------------+ * | Dacl | * +---------------------------------------------------------------+ * */ #define SMB_OWNER_SECINFO 0x0001 #define SMB_GROUP_SECINFO 0x0002 #define SMB_DACL_SECINFO 0x0004 #define SMB_SACL_SECINFO 0x0008 #define SMB_ALL_SECINFO 0x000F #define SMB_ACL_SECINFO (SMB_DACL_SECINFO | SMB_SACL_SECINFO) #define SECURITY_DESCRIPTOR_REVISION 1 #define SE_OWNER_DEFAULTED 0x0001 #define SE_GROUP_DEFAULTED 0x0002 #define SE_DACL_PRESENT 0x0004 #define SE_DACL_DEFAULTED 0x0008 #define SE_SACL_PRESENT 0x0010 #define SE_SACL_DEFAULTED 0x0020 #define SE_DACL_AUTO_INHERIT_REQ 0x0100 #define SE_SACL_AUTO_INHERIT_REQ 0x0200 #define SE_DACL_AUTO_INHERITED 0x0400 #define SE_SACL_AUTO_INHERITED 0x0800 #define SE_DACL_PROTECTED 0x1000 #define SE_SACL_PROTECTED 0x2000 #define SE_SELF_RELATIVE 0x8000 #define SE_DACL_INHERITANCE_MASK 0x1500 #define SE_SACL_INHERITANCE_MASK 0x2A00 /* * Security descriptor structures: * * smb_sd_t SD in SMB pointer form * smb_fssd_t SD in filesystem form * * Filesystems (e.g. ZFS/UFS) don't have something equivalent * to SD. The items comprising a SMB SD are kept separately in * filesystem. smb_fssd_t is introduced as a helper to provide * the required abstraction for CIFS code. */ typedef struct smb_sd { uint8_t sd_revision; uint16_t sd_control; smb_sid_t *sd_owner; /* SID file owner */ smb_sid_t *sd_group; /* SID group (for POSIX) */ smb_acl_t *sd_sacl; /* ACL System (audits) */ smb_acl_t *sd_dacl; /* ACL Discretionary (perm) */ } smb_sd_t; /* * SD header size as it appears on the wire */ #define SMB_SD_HDRSIZE 20 /* * values for smb_fssd.sd_flags */ #define SMB_FSSD_FLAGS_DIR 0x01 typedef struct smb_fssd { uint32_t sd_secinfo; uint32_t sd_flags; uid_t sd_uid; gid_t sd_gid; acl_t *sd_zdacl; acl_t *sd_zsacl; } smb_fssd_t; void smb_sd_init(smb_sd_t *, uint8_t); void smb_sd_term(smb_sd_t *); uint32_t smb_sd_get_secinfo(smb_sd_t *); uint32_t smb_sd_len(smb_sd_t *, uint32_t); uint32_t smb_sd_tofs(smb_sd_t *, smb_fssd_t *); void smb_fssd_init(smb_fssd_t *, uint32_t, uint32_t); void smb_fssd_term(smb_fssd_t *); void smb_acl_sort(smb_acl_t *); void smb_acl_free(smb_acl_t *); smb_acl_t *smb_acl_alloc(uint8_t, uint16_t, uint16_t); smb_acl_t *smb_acl_from_zfs(acl_t *); uint32_t smb_acl_to_zfs(smb_acl_t *, uint32_t, int, acl_t **); uint16_t smb_acl_len(smb_acl_t *); boolean_t smb_acl_isvalid(smb_acl_t *, int); void smb_fsacl_free(acl_t *); acl_t *smb_fsacl_alloc(int, int); #ifdef __cplusplus } #endif #endif /* _SMBSRV_NTIFS_H */