mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.4 KiB
64 lines
1.4 KiB
/*++
|
|
|
|
Copyright (c) 1989-2000 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
Lfn.h
|
|
|
|
Abstract:
|
|
|
|
This module defines the on-disk structure of long file names on FAT.
|
|
|
|
// @@BEGIN_DDKSPLIT
|
|
|
|
Author:
|
|
|
|
David Goebel [davidgoe] 16-Dec-1993
|
|
|
|
Revision History:
|
|
|
|
// @@END_DDKSPLIT
|
|
|
|
--*/
|
|
|
|
#ifndef _LFN_
|
|
#define _LFN_
|
|
|
|
//
|
|
// This strucure defines the on disk format on long file name dirents.
|
|
//
|
|
|
|
typedef struct _PACKED_LFN_DIRENT {
|
|
UCHAR Ordinal; // offset = 0
|
|
UCHAR Name1[10]; // offset = 1 (Really 5 chars, but not WCHAR aligned)
|
|
UCHAR Attributes; // offset = 11
|
|
UCHAR Type; // offset = 12
|
|
UCHAR Checksum; // offset = 13
|
|
WCHAR Name2[6]; // offset = 14
|
|
USHORT MustBeZero; // offset = 26
|
|
WCHAR Name3[2]; // offset = 28
|
|
} PACKED_LFN_DIRENT; // sizeof = 32
|
|
typedef PACKED_LFN_DIRENT *PPACKED_LFN_DIRENT;
|
|
|
|
#define FAT_LAST_LONG_ENTRY 0x40 // Ordinal field
|
|
#define FAT_LONG_NAME_COMP 0x0 // Type field
|
|
|
|
//
|
|
// A packed lfn dirent is already quadword aligned so simply declare a
|
|
// lfn dirent as a packed lfn dirent.
|
|
//
|
|
|
|
typedef PACKED_LFN_DIRENT LFN_DIRENT;
|
|
typedef LFN_DIRENT *PLFN_DIRENT;
|
|
|
|
//
|
|
// This is the largest size buffer we would ever need to read an Lfn
|
|
//
|
|
|
|
#define MAX_LFN_CHARACTERS 260
|
|
#define MAX_LFN_DIRENTS 20
|
|
|
|
#define FAT_LFN_DIRENTS_NEEDED(NAME) (((NAME)->Length/sizeof(WCHAR) + 12)/13)
|
|
|
|
#endif // _LFN_
|