* layout.h - All NTFS associated on-disk structures. Part of the Linux-NTFS
* project.
*
- * Copyright (c) 2001-2004 Anton Altaparmakov
+ * Copyright (c) 2001-2005 Anton Altaparmakov
* Copyright (c) 2002 Richard Russon
*
* This program/include file is free software; you can redistribute it and/or
COLLATION_NTOFS_ULONG = const_cpu_to_le32(0x10),
COLLATION_NTOFS_SID = const_cpu_to_le32(0x11),
COLLATION_NTOFS_SECURITY_HASH = const_cpu_to_le32(0x12),
- COLLATION_NTOFS_ULONGS = const_cpu_to_le32(0x13)
+ COLLATION_NTOFS_ULONGS = const_cpu_to_le32(0x13),
};
typedef le32 COLLATION_RULE;
/*
* The flags (32-bit) describing attribute properties in the attribute
- * definition structure. FIXME: This information is from Regis's information
- * and, according to him, it is not certain and probably incomplete.
- * The INDEXABLE flag is fairly certainly correct as only the file name
- * attribute has this flag set and this is the only attribute indexed in NT4.
+ * definition structure. FIXME: This information is based on Regis's
+ * information and, according to him, it is not certain and probably
+ * incomplete. The INDEXABLE flag is fairly certainly correct as only the file
+ * name attribute has this flag set and this is the only attribute indexed in
+ * NT4.
*/
enum {
- INDEXABLE = const_cpu_to_le32(0x02), /* Attribute can be
- indexed. */
- NEED_TO_REGENERATE = const_cpu_to_le32(0x40), /* Need to regenerate
- during regeneration
- phase. */
- CAN_BE_NON_RESIDENT = const_cpu_to_le32(0x80), /* Attribute can be
- non-resident. */
+ ATTR_DEF_INDEXABLE = const_cpu_to_le32(0x02), /* Attribute can be
+ indexed. */
+ ATTR_DEF_MULTIPLE = const_cpu_to_le32(0x04), /* Attribute type
+ can be present multiple times in the
+ mft records of an inode. */
+ ATTR_DEF_NOT_ZERO = const_cpu_to_le32(0x08), /* Attribute value
+ must contain at least one non-zero
+ byte. */
+ ATTR_DEF_INDEXED_UNIQUE = const_cpu_to_le32(0x10), /* Attribute must be
+ indexed and the attribute value must be
+ unique for the attribute type in all of
+ the mft records of an inode. */
+ ATTR_DEF_NAMED_UNIQUE = const_cpu_to_le32(0x20), /* Attribute must be
+ named and the name must be unique for
+ the attribute type in all of the mft
+ records of an inode. */
+ ATTR_DEF_RESIDENT = const_cpu_to_le32(0x40), /* Attribute must be
+ resident. */
+ ATTR_DEF_ALWAYS_LOG = const_cpu_to_le32(0x80), /* Always log
+ modifications to this attribute,
+ regardless of whether it is resident or
+ non-resident. Without this, only log
+ modifications if the attribute is
+ resident. */
};
typedef le32 ATTR_DEF_FLAGS;
record header aligned to 8-byte boundary. */
/* 34*/ u8 compression_unit; /* The compression unit expressed
as the log to the base 2 of the number of
- clusters in a compression unit. 0 means not
- compressed. (This effectively limits the
+ clusters in a compression unit. 0 means not
+ compressed. (This effectively limits the
compression unit size to be a power of two
- clusters.) WinNT4 only uses a value of 4. */
+ clusters.) WinNT4 only uses a value of 4.
+ Sparse files also have this set to 4. */
/* 35*/ u8 reserved[5]; /* Align to 8-byte boundary. */
/* The sizes below are only used when lowest_vcn is zero, as otherwise it would
be difficult to keep them up-to-date.*/
data_size. */
/* sizeof(uncompressed attr) = 64*/
/* 64*/ sle64 compressed_size; /* Byte size of the attribute
- value after compression. Only present when
- compressed. Always is a multiple of the
- cluster size. Represents the actual amount of
- disk space being used on the disk. */
+ value after compression. Only present when
+ compressed or sparse. Always is a multiple of
+ the cluster size. Represents the actual amount
+ of disk space being used on the disk. */
/* sizeof(compressed attr) = 72*/
} __attribute__ ((__packed__)) non_resident;
} __attribute__ ((__packed__)) data;
/* Note, this is a copy of the corresponding bit from the mft record,
telling us whether this file has a view index present (eg. object id
index, quota index, one of the security indexes or the encrypting
- file system related indexes). */
+ filesystem related indexes). */
};
typedef le32 FILE_ATTR_FLAGS;
/* 56*/ le64 quota_charged; /* Byte size of the charge to
the quota for all streams of the file. Note: Is
zero if quotas are disabled. */
- /* 64*/ le64 usn; /* Last update sequence number
- of the file. This is a direct index into the
- change (aka usn) journal file. It is zero if
- the usn journal is disabled.
- NOTE: To disable the journal need to delete
- the journal file itself and to then walk the
- whole mft and set all Usn entries in all mft
- records to zero! (This can take a while!)
- The journal is FILE_Extend/$UsnJrnl. Win2k
- will recreate the journal and initiate
- logging if necessary when mounting the
- partition. This, in contrast to disabling the
- journal is a very fast process, so the user
- won't even notice it. */
+ /* 64*/ leUSN usn; /* Last update sequence number
+ of the file. This is a direct index into the
+ transaction log file ($UsnJrnl). It is zero if
+ the usn journal is disabled or this file has
+ not been subject to logging yet. See usnjrnl.h
+ for details. */
} __attribute__ ((__packed__)) v3;
/* sizeof() = 72 bytes (NTFS 3.x) */
} __attribute__ ((__packed__)) ver;
VOLUME_FLAGS_MASK = const_cpu_to_le16(0x803f),
/* To make our life easier when checking if we must mount read-only. */
- VOLUME_MUST_MOUNT_RO_MASK = const_cpu_to_le16(0x8037),
+ VOLUME_MUST_MOUNT_RO_MASK = const_cpu_to_le16(0x8027),
} __attribute__ ((__packed__));
typedef le16 VOLUME_FLAGS;
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