fs/ntfs/inode.h

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  * inode.h - Defines for inode structures NTFS Linux kernel driver. Part of
4  *	     the Linux-NTFS project.
6  * Copyright (c) 2001-2007 Anton Altaparmakov
30  * The NTFS in-memory inode structure. It is just used as an extension to the
35 	s64 initialized_size;	/* Copy from the attribute record. */
36 	s64 allocated_size;	/* Copy from the attribute record. */
44 	 * If NInoAttr() is true, the below fields describe the attribute which
45 	 * this fake inode belongs to. The actual inode of this attribute is
46 	 * pointed to by base_ntfs_ino and nr_extents is always set to -1 (see
47 	 * below). For real inodes, we also set the type (AT_DATA for files and
52 	ATTR_TYPE type;	/* Attribute type of this fake inode. */
53 	ntfschar *name;		/* Attribute name of this fake inode. */
54 	u32 name_len;		/* Attribute name length of this fake inode. */
55 	runlist runlist;	/* If state has the NI_NonResident bit set,
56 				   the runlist of the unnamed data attribute
58 				   attribute (directory) or of the attribute
62 				   NI_NonResident is clear, the attribute is
64 				   no $I30 index allocation attribute
80 	 * Attribute list support (only for use by the attribute lookup
81 	 * functions). Setup during read_inode for all inodes with attribute
82 	 * lists. Only valid if NI_AttrList is set in state, and attr_list_rl is
83 	 * further only valid if NI_AttrListNonResident is set.
85 	u32 attr_list_size;	/* Length of attribute list value in bytes. */
86 	u8 *attr_list;		/* Attribute list value itself. */
87 	runlist attr_list_rl;	/* Run list for the attribute list value. */
98 		struct { /* It is a compressed/sparse file/attribute inode. */
111 			   inodes describing an attribute this is -1. */
118 		ntfs_inode *base_ntfs_ino;	/* For nr_extents == -1, the
122 						   the attribute belongs. */
132 	NI_AttrList,		/* 1: Mft record contains an attribute list. */
133 	NI_AttrListNonResident,	/* 1: Attribute list is non-resident. Implies
134 				      NI_AttrList is set. */
136 	NI_Attr,		/* 1: Fake inode for attribute i/o.
139 	NI_MstProtected,	/* 1: Attribute is protected by MST fixups.
140 				   0: Attribute is not protected by fixups. */
141 	NI_NonResident,		/* 1: Unnamed data attr is non-resident (f).
142 				   1: Attribute is non-resident (a). */
147 				   1: Attribute is compressed (a). */
150 				   1: Attribute is encrypted (a). */
153 				   1: Attribute is sparse (a). */
171 	return test_bit(NI_##flag, &(ni)->state);	\
175 	set_bit(NI_##flag, &(ni)->state);		\
179 	clear_bit(NI_##flag, &(ni)->state);		\
188 	return test_and_set_bit(NI_##flag, &(ni)->state);	\
192 	return test_and_clear_bit(NI_##flag, &(ni)->state);	\
221  * NTFS_I - return the ntfs inode given a vfs inode
233 	return &((big_ntfs_inode *)ni)->vfs_inode;  in VFS_I()
237  * ntfs_attr - ntfs in memory attribute structure
238  * @mft_no:	mft record number of the base mft record of this attribute
239  * @name:	Unicode name of the attribute (NULL if unnamed)
241  * @type:	attribute type (see layout.h)
275 	__ntfs_init_inode(vi->i_sb, ni);  in ntfs_init_big_inode()
276 	ni->mft_no = vi->i_ino;  in ntfs_init_big_inode()