^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * inode.h - Defines for inode structures NTFS Linux kernel driver. Part of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * the Linux-NTFS project.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2001-2007 Anton Altaparmakov
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (c) 2002 Richard Russon
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef _LINUX_NTFS_INODE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define _LINUX_NTFS_INODE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "layout.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "volume.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "types.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "runlist.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) typedef struct _ntfs_inode ntfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * The NTFS in-memory inode structure. It is just used as an extension to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * fields already provided in the VFS inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct _ntfs_inode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) rwlock_t size_lock; /* Lock serializing access to inode sizes. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) s64 initialized_size; /* Copy from the attribute record. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) s64 allocated_size; /* Copy from the attribute record. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) unsigned long state; /* NTFS specific flags describing this inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) See ntfs_inode_state_bits below. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) unsigned long mft_no; /* Number of the mft record / inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) u16 seq_no; /* Sequence number of the mft record. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) atomic_t count; /* Inode reference count for book keeping. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) ntfs_volume *vol; /* Pointer to the ntfs volume of this inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * If NInoAttr() is true, the below fields describe the attribute which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * this fake inode belongs to. The actual inode of this attribute is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * pointed to by base_ntfs_ino and nr_extents is always set to -1 (see
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * below). For real inodes, we also set the type (AT_DATA for files and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * AT_INDEX_ALLOCATION for directories), with the name = NULL and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * name_len = 0 for files and name = I30 (global constant) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * name_len = 4 for directories.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) ATTR_TYPE type; /* Attribute type of this fake inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) ntfschar *name; /* Attribute name of this fake inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u32 name_len; /* Attribute name length of this fake inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) runlist runlist; /* If state has the NI_NonResident bit set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) the runlist of the unnamed data attribute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) (if a file) or of the index allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) attribute (directory) or of the attribute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) described by the fake inode (if NInoAttr()).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) If runlist.rl is NULL, the runlist has not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) been read in yet or has been unmapped. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) NI_NonResident is clear, the attribute is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) resident (file and fake inode) or there is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) no $I30 index allocation attribute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) (small directory). In the latter case
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) runlist.rl is always NULL.*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * The following fields are only valid for real inodes and extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * inodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct mutex mrec_lock; /* Lock for serializing access to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) mft record belonging to this inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct page *page; /* The page containing the mft record of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) inode. This should only be touched by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) (un)map_mft_record*() functions. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int page_ofs; /* Offset into the page at which the mft record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) begins. This should only be touched by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) (un)map_mft_record*() functions. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * Attribute list support (only for use by the attribute lookup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * functions). Setup during read_inode for all inodes with attribute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * lists. Only valid if NI_AttrList is set in state, and attr_list_rl is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * further only valid if NI_AttrListNonResident is set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) u32 attr_list_size; /* Length of attribute list value in bytes. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) u8 *attr_list; /* Attribute list value itself. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) runlist attr_list_rl; /* Run list for the attribute list value. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct { /* It is a directory, $MFT, or an index inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) u32 block_size; /* Size of an index block. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) u32 vcn_size; /* Size of a vcn in this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) index. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) COLLATION_RULE collation_rule; /* The collation rule
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) for the index. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) u8 block_size_bits; /* Log2 of the above. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) u8 vcn_size_bits; /* Log2 of the above. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) } index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct { /* It is a compressed/sparse file/attribute inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) s64 size; /* Copy of compressed_size from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) $DATA. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) u32 block_size; /* Size of a compression block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) (cb). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) u8 block_size_bits; /* Log2 of the size of a cb. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) u8 block_clusters; /* Number of clusters per cb. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) } compressed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) } itype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct mutex extent_lock; /* Lock for accessing/modifying the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) below . */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) s32 nr_extents; /* For a base mft record, the number of attached extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) inodes (0 if none), for extent records and for fake
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) inodes describing an attribute this is -1. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) union { /* This union is only used if nr_extents != 0. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) ntfs_inode **extent_ntfs_inos; /* For nr_extents > 0, array of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) the ntfs inodes of the extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) mft records belonging to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) this base inode which have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) been loaded. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) ntfs_inode *base_ntfs_ino; /* For nr_extents == -1, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) ntfs inode of the base mft
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) record. For fake inodes, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) real (base) inode to which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) the attribute belongs. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) } ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * Defined bits for the state field in the ntfs_inode structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * (f) = files only, (d) = directories only, (a) = attributes/fake inodes only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) typedef enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) NI_Dirty, /* 1: Mft record needs to be written to disk. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) NI_AttrList, /* 1: Mft record contains an attribute list. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) NI_AttrListNonResident, /* 1: Attribute list is non-resident. Implies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) NI_AttrList is set. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) NI_Attr, /* 1: Fake inode for attribute i/o.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 0: Real inode or extent inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) NI_MstProtected, /* 1: Attribute is protected by MST fixups.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 0: Attribute is not protected by fixups. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) NI_NonResident, /* 1: Unnamed data attr is non-resident (f).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 1: Attribute is non-resident (a). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) NI_IndexAllocPresent = NI_NonResident, /* 1: $I30 index alloc attr is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) present (d). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) NI_Compressed, /* 1: Unnamed data attr is compressed (f).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 1: Create compressed files by default (d).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 1: Attribute is compressed (a). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) NI_Encrypted, /* 1: Unnamed data attr is encrypted (f).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 1: Create encrypted files by default (d).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 1: Attribute is encrypted (a). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) NI_Sparse, /* 1: Unnamed data attr is sparse (f).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 1: Create sparse files by default (d).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 1: Attribute is sparse (a). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) NI_SparseDisabled, /* 1: May not create sparse regions. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) NI_TruncateFailed, /* 1: Last ntfs_truncate() call failed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) } ntfs_inode_state_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * NOTE: We should be adding dirty mft records to a list somewhere and they
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * should be independent of the (ntfs/vfs) inode structure so that an inode can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * be removed but the record can be left dirty for syncing later.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * Macro tricks to expand the NInoFoo(), NInoSetFoo(), and NInoClearFoo()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) #define NINO_FNS(flag) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static inline int NIno##flag(ntfs_inode *ni) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return test_bit(NI_##flag, &(ni)->state); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static inline void NInoSet##flag(ntfs_inode *ni) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) set_bit(NI_##flag, &(ni)->state); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static inline void NInoClear##flag(ntfs_inode *ni) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) clear_bit(NI_##flag, &(ni)->state); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * As above for NInoTestSetFoo() and NInoTestClearFoo().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #define TAS_NINO_FNS(flag) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) static inline int NInoTestSet##flag(ntfs_inode *ni) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return test_and_set_bit(NI_##flag, &(ni)->state); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static inline int NInoTestClear##flag(ntfs_inode *ni) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return test_and_clear_bit(NI_##flag, &(ni)->state); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /* Emit the ntfs inode bitops functions. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) NINO_FNS(Dirty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) TAS_NINO_FNS(Dirty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) NINO_FNS(AttrList)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) NINO_FNS(AttrListNonResident)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) NINO_FNS(Attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) NINO_FNS(MstProtected)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) NINO_FNS(NonResident)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) NINO_FNS(IndexAllocPresent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) NINO_FNS(Compressed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) NINO_FNS(Encrypted)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) NINO_FNS(Sparse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) NINO_FNS(SparseDisabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) NINO_FNS(TruncateFailed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * The full structure containing a ntfs_inode and a vfs struct inode. Used for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * all real and fake inodes but not for extent inodes which lack the vfs struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) ntfs_inode ntfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct inode vfs_inode; /* The vfs inode structure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) } big_ntfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * NTFS_I - return the ntfs inode given a vfs inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * @inode: VFS inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * NTFS_I() returns the ntfs inode associated with the VFS @inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static inline ntfs_inode *NTFS_I(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return (ntfs_inode *)container_of(inode, big_ntfs_inode, vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) static inline struct inode *VFS_I(ntfs_inode *ni)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return &((big_ntfs_inode *)ni)->vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * ntfs_attr - ntfs in memory attribute structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * @mft_no: mft record number of the base mft record of this attribute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * @name: Unicode name of the attribute (NULL if unnamed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * @name_len: length of @name in Unicode characters (0 if unnamed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * @type: attribute type (see layout.h)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * This structure exists only to provide a small structure for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * ntfs_{attr_}iget()/ntfs_test_inode()/ntfs_init_locked_inode() mechanism.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * NOTE: Elements are ordered by size to make the structure as compact as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * possible on all architectures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) unsigned long mft_no;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) ntfschar *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) u32 name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) ATTR_TYPE type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) } ntfs_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) extern int ntfs_test_inode(struct inode *vi, void *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) extern struct inode *ntfs_iget(struct super_block *sb, unsigned long mft_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) extern struct inode *ntfs_attr_iget(struct inode *base_vi, ATTR_TYPE type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) ntfschar *name, u32 name_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) extern struct inode *ntfs_index_iget(struct inode *base_vi, ntfschar *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) u32 name_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) extern struct inode *ntfs_alloc_big_inode(struct super_block *sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) extern void ntfs_free_big_inode(struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) extern void ntfs_evict_big_inode(struct inode *vi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) extern void __ntfs_init_inode(struct super_block *sb, ntfs_inode *ni);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) static inline void ntfs_init_big_inode(struct inode *vi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) ntfs_inode *ni = NTFS_I(vi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) ntfs_debug("Entering.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) __ntfs_init_inode(vi->i_sb, ni);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) ni->mft_no = vi->i_ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) extern ntfs_inode *ntfs_new_extent_inode(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) unsigned long mft_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) extern void ntfs_clear_extent_inode(ntfs_inode *ni);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) extern int ntfs_read_inode_mount(struct inode *vi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) extern int ntfs_show_options(struct seq_file *sf, struct dentry *root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) #ifdef NTFS_RW
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) extern int ntfs_truncate(struct inode *vi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) extern void ntfs_truncate_vfs(struct inode *vi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) extern int ntfs_setattr(struct dentry *dentry, struct iattr *attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) extern int __ntfs_write_inode(struct inode *vi, int sync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) static inline void ntfs_commit_inode(struct inode *vi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (!is_bad_inode(vi))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) __ntfs_write_inode(vi, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) static inline void ntfs_truncate_vfs(struct inode *vi) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) #endif /* NTFS_RW */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) #endif /* _LINUX_NTFS_INODE_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags