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1139 lines
36 KiB
1139 lines
36 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* |
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* Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. |
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* |
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*/ |
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// clang-format off |
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#ifndef _LINUX_NTFS3_NTFS_FS_H |
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#define _LINUX_NTFS3_NTFS_FS_H |
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#include <linux/blkdev.h> |
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#include <linux/buffer_head.h> |
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#include <linux/fs.h> |
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#include <linux/highmem.h> |
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#include <linux/kernel.h> |
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#include <linux/mm.h> |
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#include <linux/mutex.h> |
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#include <linux/page-flags.h> |
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#include <linux/pagemap.h> |
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#include <linux/rbtree.h> |
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#include <linux/rwsem.h> |
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#include <linux/slab.h> |
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#include <linux/string.h> |
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#include <linux/time64.h> |
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#include <linux/types.h> |
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#include <linux/uidgid.h> |
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#include <asm/div64.h> |
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#include <asm/page.h> |
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#include "debug.h" |
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#include "ntfs.h" |
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struct dentry; |
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struct fiemap_extent_info; |
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struct user_namespace; |
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struct page; |
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struct writeback_control; |
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enum utf16_endian; |
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#define MINUS_ONE_T ((size_t)(-1)) |
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/* Biggest MFT / smallest cluster */ |
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#define MAXIMUM_BYTES_PER_MFT 4096 |
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#define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) |
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#define MAXIMUM_BYTES_PER_INDEX 4096 |
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#define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) |
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/* NTFS specific error code when fixup failed. */ |
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#define E_NTFS_FIXUP 555 |
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/* NTFS specific error code about resident->nonresident. */ |
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#define E_NTFS_NONRESIDENT 556 |
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/* NTFS specific error code about punch hole. */ |
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#define E_NTFS_NOTALIGNED 557 |
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/* sbi->flags */ |
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#define NTFS_FLAGS_NODISCARD 0x00000001 |
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/* Set when LogFile is replaying. */ |
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#define NTFS_FLAGS_LOG_REPLAYING 0x00000008 |
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/* Set when we changed first MFT's which copy must be updated in $MftMirr. */ |
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#define NTFS_FLAGS_MFTMIRR 0x00001000 |
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#define NTFS_FLAGS_NEED_REPLAY 0x04000000 |
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/* ni->ni_flags */ |
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/* |
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* Data attribute is external compressed (LZX/Xpress) |
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* 1 - WOF_COMPRESSION_XPRESS4K |
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* 2 - WOF_COMPRESSION_XPRESS8K |
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* 3 - WOF_COMPRESSION_XPRESS16K |
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* 4 - WOF_COMPRESSION_LZX32K |
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*/ |
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#define NI_FLAG_COMPRESSED_MASK 0x0000000f |
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/* Data attribute is deduplicated. */ |
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#define NI_FLAG_DEDUPLICATED 0x00000010 |
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#define NI_FLAG_EA 0x00000020 |
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#define NI_FLAG_DIR 0x00000040 |
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#define NI_FLAG_RESIDENT 0x00000080 |
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#define NI_FLAG_UPDATE_PARENT 0x00000100 |
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// clang-format on |
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struct ntfs_mount_options { |
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char *nls_name; |
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struct nls_table *nls; |
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kuid_t fs_uid; |
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kgid_t fs_gid; |
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u16 fs_fmask_inv; |
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u16 fs_dmask_inv; |
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unsigned fmask : 1; /* fmask was set. */ |
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unsigned dmask : 1; /*dmask was set. */ |
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unsigned sys_immutable : 1; /* Immutable system files. */ |
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unsigned discard : 1; /* Issue discard requests on deletions. */ |
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unsigned sparse : 1; /* Create sparse files. */ |
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unsigned showmeta : 1; /* Show meta files. */ |
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unsigned nohidden : 1; /* Do not show hidden files. */ |
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unsigned force : 1; /* RW mount dirty volume. */ |
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unsigned noacsrules : 1; /* Exclude acs rules. */ |
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unsigned prealloc : 1; /* Preallocate space when file is growing. */ |
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}; |
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/* Special value to unpack and deallocate. */ |
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#define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) |
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/* TODO: Use rb tree instead of array. */ |
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struct runs_tree { |
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struct ntfs_run *runs; |
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size_t count; /* Currently used size a ntfs_run storage. */ |
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size_t allocated; /* Currently allocated ntfs_run storage size. */ |
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}; |
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struct ntfs_buffers { |
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/* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ |
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/* Biggest index / smallest cluster = 4096 / 512 = 8 */ |
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struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; |
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u32 bytes; |
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u32 nbufs; |
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u32 off; |
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}; |
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enum ALLOCATE_OPT { |
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ALLOCATE_DEF = 0, // Allocate all clusters. |
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ALLOCATE_MFT = 1, // Allocate for MFT. |
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}; |
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enum bitmap_mutex_classes { |
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BITMAP_MUTEX_CLUSTERS = 0, |
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BITMAP_MUTEX_MFT = 1, |
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}; |
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struct wnd_bitmap { |
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struct super_block *sb; |
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struct rw_semaphore rw_lock; |
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struct runs_tree run; |
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size_t nbits; |
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size_t total_zeroes; // Total number of free bits. |
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u16 *free_bits; // Free bits in each window. |
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size_t nwnd; |
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u32 bits_last; // Bits in last window. |
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struct rb_root start_tree; // Extents, sorted by 'start'. |
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struct rb_root count_tree; // Extents, sorted by 'count + start'. |
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size_t count; // Extents count. |
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/* |
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* -1 Tree is activated but not updated (too many fragments). |
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* 0 - Tree is not activated. |
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* 1 - Tree is activated and updated. |
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*/ |
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int uptodated; |
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size_t extent_min; // Minimal extent used while building. |
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size_t extent_max; // Upper estimate of biggest free block. |
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/* Zone [bit, end) */ |
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size_t zone_bit; |
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size_t zone_end; |
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bool set_tail; // Not necessary in driver. |
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bool inited; |
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}; |
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typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, |
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size_t len2, const void *param); |
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enum index_mutex_classed { |
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INDEX_MUTEX_I30 = 0, |
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INDEX_MUTEX_SII = 1, |
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INDEX_MUTEX_SDH = 2, |
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INDEX_MUTEX_SO = 3, |
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INDEX_MUTEX_SQ = 4, |
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INDEX_MUTEX_SR = 5, |
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INDEX_MUTEX_TOTAL |
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}; |
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/* ntfs_index - Allocation unit inside directory. */ |
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struct ntfs_index { |
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struct runs_tree bitmap_run; |
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struct runs_tree alloc_run; |
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/* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ |
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struct rw_semaphore run_lock; |
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/*TODO: Remove 'cmp'. */ |
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NTFS_CMP_FUNC cmp; |
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u8 index_bits; // log2(root->index_block_size) |
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u8 idx2vbn_bits; // log2(root->index_block_clst) |
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u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits |
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u8 type; // index_mutex_classed |
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}; |
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/* Minimum MFT zone. */ |
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#define NTFS_MIN_MFT_ZONE 100 |
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/* Ntfs file system in-core superblock data. */ |
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struct ntfs_sb_info { |
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struct super_block *sb; |
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u32 discard_granularity; |
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u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) |
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u32 cluster_size; // bytes per cluster |
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u32 cluster_mask; // == cluster_size - 1 |
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u64 cluster_mask_inv; // ~(cluster_size - 1) |
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u32 block_mask; // sb->s_blocksize - 1 |
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u32 blocks_per_cluster; // cluster_size / sb->s_blocksize |
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u32 record_size; |
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u32 index_size; |
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u8 cluster_bits; |
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u8 record_bits; |
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u64 maxbytes; // Maximum size for normal files. |
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u64 maxbytes_sparse; // Maximum size for sparse file. |
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u32 flags; // See NTFS_FLAGS_XXX. |
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CLST zone_max; // Maximum MFT zone length in clusters |
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CLST bad_clusters; // The count of marked bad clusters. |
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u16 max_bytes_per_attr; // Maximum attribute size in record. |
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u16 attr_size_tr; // Attribute size threshold (320 bytes). |
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/* Records in $Extend. */ |
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CLST objid_no; |
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CLST quota_no; |
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CLST reparse_no; |
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CLST usn_jrnl_no; |
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struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. |
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u32 def_entries; |
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u32 ea_max_size; |
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struct MFT_REC *new_rec; |
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u16 *upcase; |
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struct { |
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u64 lbo, lbo2; |
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struct ntfs_inode *ni; |
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struct wnd_bitmap bitmap; // $MFT::Bitmap |
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/* |
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* MFT records [11-24) used to expand MFT itself. |
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* They always marked as used in $MFT::Bitmap |
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* 'reserved_bitmap' contains real bitmap of these records. |
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*/ |
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ulong reserved_bitmap; // Bitmap of used records [11 - 24) |
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size_t next_free; // The next record to allocate from |
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size_t used; // MFT valid size in records. |
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u32 recs_mirr; // Number of records in MFTMirr |
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u8 next_reserved; |
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u8 reserved_bitmap_inited; |
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} mft; |
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struct { |
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struct wnd_bitmap bitmap; // $Bitmap::Data |
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CLST next_free_lcn; |
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} used; |
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struct { |
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u64 size; // In bytes. |
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u64 blocks; // In blocks. |
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u64 ser_num; |
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struct ntfs_inode *ni; |
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__le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. |
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u8 major_ver; |
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u8 minor_ver; |
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char label[65]; |
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bool real_dirty; // Real fs state. |
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} volume; |
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struct { |
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struct ntfs_index index_sii; |
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struct ntfs_index index_sdh; |
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struct ntfs_inode *ni; |
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u32 next_id; |
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u64 next_off; |
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__le32 def_security_id; |
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} security; |
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struct { |
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struct ntfs_index index_r; |
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struct ntfs_inode *ni; |
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u64 max_size; // 16K |
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} reparse; |
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struct { |
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struct ntfs_index index_o; |
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struct ntfs_inode *ni; |
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} objid; |
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struct { |
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struct mutex mtx_lznt; |
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struct lznt *lznt; |
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#ifdef CONFIG_NTFS3_LZX_XPRESS |
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struct mutex mtx_xpress; |
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struct xpress_decompressor *xpress; |
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struct mutex mtx_lzx; |
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struct lzx_decompressor *lzx; |
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#endif |
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} compress; |
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struct ntfs_mount_options *options; |
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struct ratelimit_state msg_ratelimit; |
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}; |
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/* One MFT record(usually 1024 bytes), consists of attributes. */ |
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struct mft_inode { |
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struct rb_node node; |
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struct ntfs_sb_info *sbi; |
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struct MFT_REC *mrec; |
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struct ntfs_buffers nb; |
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CLST rno; |
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bool dirty; |
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}; |
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/* Nested class for ntfs_inode::ni_lock. */ |
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enum ntfs_inode_mutex_lock_class { |
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NTFS_INODE_MUTEX_DIRTY, |
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NTFS_INODE_MUTEX_SECURITY, |
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NTFS_INODE_MUTEX_OBJID, |
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NTFS_INODE_MUTEX_REPARSE, |
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NTFS_INODE_MUTEX_NORMAL, |
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NTFS_INODE_MUTEX_PARENT, |
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}; |
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/* |
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* sturct ntfs_inode |
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* |
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* Ntfs inode - extends linux inode. consists of one or more MFT inodes. |
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*/ |
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struct ntfs_inode { |
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struct mft_inode mi; // base record |
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/* |
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* Valid size: [0 - i_valid) - these range in file contains valid data. |
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* Range [i_valid - inode->i_size) - contains 0. |
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* Usually i_valid <= inode->i_size. |
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*/ |
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u64 i_valid; |
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struct timespec64 i_crtime; |
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struct mutex ni_lock; |
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/* File attributes from std. */ |
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enum FILE_ATTRIBUTE std_fa; |
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__le32 std_security_id; |
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/* |
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* Tree of mft_inode. |
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* Not empty when primary MFT record (usually 1024 bytes) can't save all attributes |
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* e.g. file becomes too fragmented or contains a lot of names. |
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*/ |
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struct rb_root mi_tree; |
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/* |
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* This member is used in ntfs_readdir to ensure that all subrecords are loaded |
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*/ |
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u8 mi_loaded; |
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union { |
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struct ntfs_index dir; |
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struct { |
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struct rw_semaphore run_lock; |
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struct runs_tree run; |
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#ifdef CONFIG_NTFS3_LZX_XPRESS |
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struct page *offs_page; |
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#endif |
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} file; |
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}; |
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struct { |
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struct runs_tree run; |
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struct ATTR_LIST_ENTRY *le; // 1K aligned memory. |
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size_t size; |
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bool dirty; |
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} attr_list; |
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size_t ni_flags; // NI_FLAG_XXX |
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struct inode vfs_inode; |
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}; |
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struct indx_node { |
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struct ntfs_buffers nb; |
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struct INDEX_BUFFER *index; |
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}; |
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struct ntfs_fnd { |
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int level; |
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struct indx_node *nodes[20]; |
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struct NTFS_DE *de[20]; |
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struct NTFS_DE *root_de; |
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}; |
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enum REPARSE_SIGN { |
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REPARSE_NONE = 0, |
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REPARSE_COMPRESSED = 1, |
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REPARSE_DEDUPLICATED = 2, |
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REPARSE_LINK = 3 |
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}; |
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/* Functions from attrib.c */ |
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int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, |
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CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, |
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enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, |
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CLST *new_lcn); |
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int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, |
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struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, |
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u64 new_size, struct runs_tree *run, |
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struct ATTRIB **ins_attr, struct page *page); |
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int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, |
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const __le16 *name, u8 name_len, struct runs_tree *run, |
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u64 new_size, const u64 *new_valid, bool keep_prealloc, |
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struct ATTRIB **ret); |
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int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, |
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CLST *len, bool *new); |
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int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); |
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int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); |
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int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, |
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const __le16 *name, u8 name_len, struct runs_tree *run, |
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CLST vcn); |
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int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, |
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const __le16 *name, u8 name_len, struct runs_tree *run, |
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u64 from, u64 to); |
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int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, |
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struct runs_tree *run, u64 frame, u64 frames, |
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u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); |
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int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, |
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CLST frame, CLST *clst_data); |
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int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, |
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u64 new_valid); |
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int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); |
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int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); |
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int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); |
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/* Functions from attrlist.c */ |
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void al_destroy(struct ntfs_inode *ni); |
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bool al_verify(struct ntfs_inode *ni); |
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int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); |
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struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, |
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struct ATTR_LIST_ENTRY *le); |
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struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, |
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struct ATTR_LIST_ENTRY *le, |
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const struct ATTRIB *attr); |
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struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, |
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struct ATTR_LIST_ENTRY *le, |
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enum ATTR_TYPE type, const __le16 *name, |
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u8 name_len, const CLST *vcn); |
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int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, |
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u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, |
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struct ATTR_LIST_ENTRY **new_le); |
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bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); |
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bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, |
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const __le16 *name, size_t name_len, |
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const struct MFT_REF *ref); |
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int al_update(struct ntfs_inode *ni, int sync); |
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static inline size_t al_aligned(size_t size) |
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{ |
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return (size + 1023) & ~(size_t)1023; |
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} |
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/* Globals from bitfunc.c */ |
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bool are_bits_clear(const ulong *map, size_t bit, size_t nbits); |
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bool are_bits_set(const ulong *map, size_t bit, size_t nbits); |
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size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits); |
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/* Globals from dir.c */ |
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int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, |
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u8 *buf, int buf_len); |
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int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, |
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struct cpu_str *uni, u32 max_ulen, |
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enum utf16_endian endian); |
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struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, |
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struct ntfs_fnd *fnd); |
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bool dir_is_empty(struct inode *dir); |
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extern const struct file_operations ntfs_dir_operations; |
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/* Globals from file.c */ |
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int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path, |
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struct kstat *stat, u32 request_mask, u32 flags); |
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void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, |
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CLST len); |
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int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, |
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struct iattr *attr); |
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int ntfs_file_open(struct inode *inode, struct file *file); |
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int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
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__u64 start, __u64 len); |
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extern const struct inode_operations ntfs_special_inode_operations; |
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extern const struct inode_operations ntfs_file_inode_operations; |
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extern const struct file_operations ntfs_file_operations; |
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/* Globals from frecord.c */ |
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void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); |
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struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); |
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struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); |
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void ni_clear(struct ntfs_inode *ni); |
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int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); |
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int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, |
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struct mft_inode **mi); |
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struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, |
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struct ATTR_LIST_ENTRY **entry_o, |
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enum ATTR_TYPE type, const __le16 *name, |
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u8 name_len, const CLST *vcn, |
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struct mft_inode **mi); |
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struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, |
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struct ATTR_LIST_ENTRY **le, |
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struct mft_inode **mi); |
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struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, |
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const __le16 *name, u8 name_len, CLST vcn, |
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struct mft_inode **pmi); |
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int ni_load_all_mi(struct ntfs_inode *ni); |
|
bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); |
|
int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, |
|
const __le16 *name, size_t name_len, bool base_only, |
|
const __le16 *id); |
|
int ni_create_attr_list(struct ntfs_inode *ni); |
|
int ni_expand_list(struct ntfs_inode *ni); |
|
int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, |
|
const __le16 *name, u8 name_len, |
|
const struct runs_tree *run, CLST svcn, CLST len, |
|
__le16 flags, struct ATTRIB **new_attr, |
|
struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); |
|
int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, |
|
enum ATTR_TYPE type, const __le16 *name, u8 name_len, |
|
struct ATTRIB **new_attr, struct mft_inode **mi, |
|
struct ATTR_LIST_ENTRY **le); |
|
void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, |
|
struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); |
|
int ni_delete_all(struct ntfs_inode *ni); |
|
struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, |
|
const struct cpu_str *uni, |
|
const struct MFT_REF *home, |
|
struct mft_inode **mi, |
|
struct ATTR_LIST_ENTRY **entry); |
|
struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, |
|
struct mft_inode **mi, |
|
struct ATTR_LIST_ENTRY **entry); |
|
int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); |
|
enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, |
|
struct REPARSE_DATA_BUFFER *buffer); |
|
int ni_write_inode(struct inode *inode, int sync, const char *hint); |
|
#define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) |
|
int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, |
|
__u64 vbo, __u64 len); |
|
int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); |
|
int ni_decompress_file(struct ntfs_inode *ni); |
|
int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, |
|
u32 pages_per_frame); |
|
int ni_write_frame(struct ntfs_inode *ni, struct page **pages, |
|
u32 pages_per_frame); |
|
int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, |
|
struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); |
|
|
|
bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, |
|
struct NTFS_DE *de, struct NTFS_DE *de2, |
|
int undo_step); |
|
|
|
int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, |
|
struct NTFS_DE *de); |
|
|
|
int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, |
|
struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, |
|
bool *is_bad); |
|
|
|
bool ni_is_dirty(struct inode *inode); |
|
|
|
/* Globals from fslog.c */ |
|
int log_replay(struct ntfs_inode *ni, bool *initialized); |
|
|
|
/* Globals from fsntfs.c */ |
|
bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); |
|
int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, |
|
bool simple); |
|
int ntfs_extend_init(struct ntfs_sb_info *sbi); |
|
int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); |
|
const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi, |
|
enum ATTR_TYPE Type); |
|
int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, |
|
CLST *new_lcn, CLST *new_len, |
|
enum ALLOCATE_OPT opt); |
|
int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, |
|
struct ntfs_inode *ni, struct mft_inode **mi); |
|
void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft); |
|
int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); |
|
int ntfs_refresh_zone(struct ntfs_sb_info *sbi); |
|
void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); |
|
void ntfs_bad_inode(struct inode *inode, const char *hint); |
|
#define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__) |
|
enum NTFS_DIRTY_FLAGS { |
|
NTFS_DIRTY_CLEAR = 0, |
|
NTFS_DIRTY_DIRTY = 1, |
|
NTFS_DIRTY_ERROR = 2, |
|
}; |
|
int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); |
|
int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); |
|
int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, |
|
const void *buffer, int wait); |
|
int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
|
u64 vbo, const void *buf, size_t bytes, int sync); |
|
struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, |
|
const struct runs_tree *run, u64 vbo); |
|
int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
|
u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); |
|
int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, |
|
struct NTFS_RECORD_HEADER *rhdr, u32 bytes, |
|
struct ntfs_buffers *nb); |
|
int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, |
|
u32 bytes, struct ntfs_buffers *nb); |
|
int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, |
|
struct ntfs_buffers *nb, int sync); |
|
int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
|
struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, |
|
enum req_op op); |
|
int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); |
|
int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
|
u64 vbo, u64 *lbo, u64 *bytes); |
|
struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, |
|
bool dir); |
|
extern const u8 s_default_security[0x50]; |
|
bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); |
|
int ntfs_security_init(struct ntfs_sb_info *sbi); |
|
int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, |
|
struct SECURITY_DESCRIPTOR_RELATIVE **sd, |
|
size_t *size); |
|
int ntfs_insert_security(struct ntfs_sb_info *sbi, |
|
const struct SECURITY_DESCRIPTOR_RELATIVE *sd, |
|
u32 size, __le32 *security_id, bool *inserted); |
|
int ntfs_reparse_init(struct ntfs_sb_info *sbi); |
|
int ntfs_objid_init(struct ntfs_sb_info *sbi); |
|
int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); |
|
int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, |
|
const struct MFT_REF *ref); |
|
int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, |
|
const struct MFT_REF *ref); |
|
void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); |
|
int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim); |
|
|
|
/* Globals from index.c */ |
|
int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); |
|
void fnd_clear(struct ntfs_fnd *fnd); |
|
static inline struct ntfs_fnd *fnd_get(void) |
|
{ |
|
return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); |
|
} |
|
static inline void fnd_put(struct ntfs_fnd *fnd) |
|
{ |
|
if (fnd) { |
|
fnd_clear(fnd); |
|
kfree(fnd); |
|
} |
|
} |
|
void indx_clear(struct ntfs_index *idx); |
|
int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, |
|
const struct ATTRIB *attr, enum index_mutex_classed type); |
|
struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, |
|
struct ATTRIB **attr, struct mft_inode **mi); |
|
int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, |
|
struct indx_node **node); |
|
int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, |
|
const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, |
|
const void *param, int *diff, struct NTFS_DE **entry, |
|
struct ntfs_fnd *fnd); |
|
int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, |
|
const struct INDEX_ROOT *root, struct NTFS_DE **entry, |
|
struct ntfs_fnd *fnd); |
|
int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, |
|
const struct INDEX_ROOT *root, struct NTFS_DE **entry, |
|
size_t *off, struct ntfs_fnd *fnd); |
|
int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, |
|
const struct NTFS_DE *new_de, const void *param, |
|
struct ntfs_fnd *fnd, bool undo); |
|
int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, |
|
const void *key, u32 key_len, const void *param); |
|
int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, |
|
const struct ATTR_FILE_NAME *fname, |
|
const struct NTFS_DUP_INFO *dup, int sync); |
|
|
|
/* Globals from inode.c */ |
|
struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, |
|
const struct cpu_str *name); |
|
int ntfs_set_size(struct inode *inode, u64 new_size); |
|
int reset_log_file(struct inode *inode); |
|
int ntfs_get_block(struct inode *inode, sector_t vbn, |
|
struct buffer_head *bh_result, int create); |
|
int ntfs_write_begin(struct file *file, struct address_space *mapping, |
|
loff_t pos, u32 len, struct page **pagep, void **fsdata); |
|
int ntfs_write_end(struct file *file, struct address_space *mapping, |
|
loff_t pos, u32 len, u32 copied, struct page *page, |
|
void *fsdata); |
|
int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); |
|
int ntfs_sync_inode(struct inode *inode); |
|
int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, |
|
struct inode *i2); |
|
int inode_write_data(struct inode *inode, const void *data, size_t bytes); |
|
struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, |
|
struct inode *dir, struct dentry *dentry, |
|
const struct cpu_str *uni, umode_t mode, |
|
dev_t dev, const char *symname, u32 size, |
|
struct ntfs_fnd *fnd); |
|
int ntfs_link_inode(struct inode *inode, struct dentry *dentry); |
|
int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); |
|
void ntfs_evict_inode(struct inode *inode); |
|
extern const struct inode_operations ntfs_link_inode_operations; |
|
extern const struct address_space_operations ntfs_aops; |
|
extern const struct address_space_operations ntfs_aops_cmpr; |
|
|
|
/* Globals from name_i.c */ |
|
int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, |
|
const struct cpu_str *uni); |
|
struct dentry *ntfs3_get_parent(struct dentry *child); |
|
|
|
extern const struct inode_operations ntfs_dir_inode_operations; |
|
extern const struct inode_operations ntfs_special_inode_operations; |
|
|
|
/* Globals from record.c */ |
|
int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); |
|
void mi_put(struct mft_inode *mi); |
|
int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); |
|
int mi_read(struct mft_inode *mi, bool is_mft); |
|
struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); |
|
// TODO: id? |
|
struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, |
|
enum ATTR_TYPE type, const __le16 *name, |
|
size_t name_len, const __le16 *id); |
|
static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, |
|
struct ATTR_LIST_ENTRY *le) |
|
{ |
|
return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, |
|
&le->id); |
|
} |
|
int mi_write(struct mft_inode *mi, int wait); |
|
int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, |
|
__le16 flags, bool is_mft); |
|
struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, |
|
const __le16 *name, u8 name_len, u32 asize, |
|
u16 name_off); |
|
|
|
bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, |
|
struct ATTRIB *attr); |
|
bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); |
|
int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, |
|
struct runs_tree *run, CLST len); |
|
static inline bool mi_is_ref(const struct mft_inode *mi, |
|
const struct MFT_REF *ref) |
|
{ |
|
if (le32_to_cpu(ref->low) != mi->rno) |
|
return false; |
|
if (ref->seq != mi->mrec->seq) |
|
return false; |
|
|
|
#ifdef CONFIG_NTFS3_64BIT_CLUSTER |
|
return le16_to_cpu(ref->high) == (mi->rno >> 32); |
|
#else |
|
return !ref->high; |
|
#endif |
|
} |
|
|
|
static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) |
|
{ |
|
ref->low = cpu_to_le32(mi->rno); |
|
#ifdef CONFIG_NTFS3_64BIT_CLUSTER |
|
ref->high = cpu_to_le16(mi->rno >> 32); |
|
#else |
|
ref->high = 0; |
|
#endif |
|
ref->seq = mi->mrec->seq; |
|
} |
|
|
|
/* Globals from run.c */ |
|
bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, |
|
CLST *len, size_t *index); |
|
void run_truncate(struct runs_tree *run, CLST vcn); |
|
void run_truncate_head(struct runs_tree *run, CLST vcn); |
|
void run_truncate_around(struct runs_tree *run, CLST vcn); |
|
bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, |
|
bool is_mft); |
|
bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); |
|
bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len); |
|
bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, |
|
CLST *lcn, CLST *len); |
|
bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); |
|
|
|
int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, |
|
u32 run_buf_size, CLST *packed_vcns); |
|
int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, |
|
CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, |
|
u32 run_buf_size); |
|
|
|
#ifdef NTFS3_CHECK_FREE_CLST |
|
int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, |
|
CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, |
|
u32 run_buf_size); |
|
#else |
|
#define run_unpack_ex run_unpack |
|
#endif |
|
int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); |
|
int run_clone(const struct runs_tree *run, struct runs_tree *new_run); |
|
|
|
/* Globals from super.c */ |
|
void *ntfs_set_shared(void *ptr, u32 bytes); |
|
void *ntfs_put_shared(void *ptr); |
|
void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); |
|
int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); |
|
|
|
/* Globals from bitmap.c*/ |
|
int __init ntfs3_init_bitmap(void); |
|
void ntfs3_exit_bitmap(void); |
|
void wnd_close(struct wnd_bitmap *wnd); |
|
static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) |
|
{ |
|
return wnd->total_zeroes; |
|
} |
|
int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); |
|
int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
|
int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
|
bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
|
bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
|
|
|
/* Possible values for 'flags' 'wnd_find'. */ |
|
#define BITMAP_FIND_MARK_AS_USED 0x01 |
|
#define BITMAP_FIND_FULL 0x02 |
|
size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, |
|
size_t flags, size_t *allocated); |
|
int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); |
|
void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); |
|
int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); |
|
|
|
/* Globals from upcase.c */ |
|
int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, |
|
const u16 *upcase, bool bothcase); |
|
int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, |
|
const u16 *upcase, bool bothcase); |
|
|
|
/* globals from xattr.c */ |
|
#ifdef CONFIG_NTFS3_FS_POSIX_ACL |
|
struct posix_acl *ntfs_get_acl(struct inode *inode, int type, bool rcu); |
|
int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode, |
|
struct posix_acl *acl, int type); |
|
int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode, |
|
struct inode *dir); |
|
#else |
|
#define ntfs_get_acl NULL |
|
#define ntfs_set_acl NULL |
|
#endif |
|
|
|
int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode); |
|
int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode, |
|
int mask); |
|
ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
|
extern const struct xattr_handler *ntfs_xattr_handlers[]; |
|
|
|
int ntfs_save_wsl_perm(struct inode *inode); |
|
void ntfs_get_wsl_perm(struct inode *inode); |
|
|
|
/* globals from lznt.c */ |
|
struct lznt *get_lznt_ctx(int level); |
|
size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, |
|
void *compressed, size_t compressed_size, |
|
struct lznt *ctx); |
|
ssize_t decompress_lznt(const void *compressed, size_t compressed_size, |
|
void *uncompressed, size_t uncompressed_size); |
|
|
|
static inline bool is_ntfs3(struct ntfs_sb_info *sbi) |
|
{ |
|
return sbi->volume.major_ver >= 3; |
|
} |
|
|
|
/* (sb->s_flags & SB_ACTIVE) */ |
|
static inline bool is_mounted(struct ntfs_sb_info *sbi) |
|
{ |
|
return !!sbi->sb->s_root; |
|
} |
|
|
|
static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) |
|
{ |
|
return rno < MFT_REC_FREE || rno == sbi->objid_no || |
|
rno == sbi->quota_no || rno == sbi->reparse_no || |
|
rno == sbi->usn_jrnl_no; |
|
} |
|
|
|
static inline void ntfs_unmap_page(struct page *page) |
|
{ |
|
kunmap(page); |
|
put_page(page); |
|
} |
|
|
|
static inline struct page *ntfs_map_page(struct address_space *mapping, |
|
unsigned long index) |
|
{ |
|
struct page *page = read_mapping_page(mapping, index, NULL); |
|
|
|
if (!IS_ERR(page)) |
|
kmap(page); |
|
return page; |
|
} |
|
|
|
static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) |
|
{ |
|
return wnd->zone_bit; |
|
} |
|
|
|
static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) |
|
{ |
|
return wnd->zone_end - wnd->zone_bit; |
|
} |
|
|
|
static inline void run_init(struct runs_tree *run) |
|
{ |
|
run->runs = NULL; |
|
run->count = 0; |
|
run->allocated = 0; |
|
} |
|
|
|
static inline struct runs_tree *run_alloc(void) |
|
{ |
|
return kzalloc(sizeof(struct runs_tree), GFP_NOFS); |
|
} |
|
|
|
static inline void run_close(struct runs_tree *run) |
|
{ |
|
kvfree(run->runs); |
|
memset(run, 0, sizeof(*run)); |
|
} |
|
|
|
static inline void run_free(struct runs_tree *run) |
|
{ |
|
if (run) { |
|
kvfree(run->runs); |
|
kfree(run); |
|
} |
|
} |
|
|
|
static inline bool run_is_empty(struct runs_tree *run) |
|
{ |
|
return !run->count; |
|
} |
|
|
|
/* NTFS uses quad aligned bitmaps. */ |
|
static inline size_t bitmap_size(size_t bits) |
|
{ |
|
return ALIGN((bits + 7) >> 3, 8); |
|
} |
|
|
|
#define _100ns2seconds 10000000 |
|
#define SecondsToStartOf1970 0x00000002B6109100 |
|
|
|
#define NTFS_TIME_GRAN 100 |
|
|
|
/* |
|
* kernel2nt - Converts in-memory kernel timestamp into nt time. |
|
*/ |
|
static inline __le64 kernel2nt(const struct timespec64 *ts) |
|
{ |
|
// 10^7 units of 100 nanoseconds one second |
|
return cpu_to_le64(_100ns2seconds * |
|
(ts->tv_sec + SecondsToStartOf1970) + |
|
ts->tv_nsec / NTFS_TIME_GRAN); |
|
} |
|
|
|
/* |
|
* nt2kernel - Converts on-disk nt time into kernel timestamp. |
|
*/ |
|
static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) |
|
{ |
|
u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; |
|
|
|
// WARNING: do_div changes its first argument(!) |
|
ts->tv_nsec = do_div(t, _100ns2seconds) * 100; |
|
ts->tv_sec = t; |
|
} |
|
|
|
static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) |
|
{ |
|
return sb->s_fs_info; |
|
} |
|
|
|
/* |
|
* ntfs_up_cluster - Align up on cluster boundary. |
|
*/ |
|
static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) |
|
{ |
|
return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; |
|
} |
|
|
|
/* |
|
* ntfs_up_block - Align up on cluster boundary. |
|
*/ |
|
static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) |
|
{ |
|
return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); |
|
} |
|
|
|
static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) |
|
{ |
|
return (size + sbi->cluster_mask) >> sbi->cluster_bits; |
|
} |
|
|
|
static inline u64 bytes_to_block(const struct super_block *sb, u64 size) |
|
{ |
|
return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; |
|
} |
|
|
|
static inline struct buffer_head *ntfs_bread(struct super_block *sb, |
|
sector_t block) |
|
{ |
|
struct buffer_head *bh = sb_bread(sb, block); |
|
|
|
if (bh) |
|
return bh; |
|
|
|
ntfs_err(sb, "failed to read volume at offset 0x%llx", |
|
(u64)block << sb->s_blocksize_bits); |
|
return NULL; |
|
} |
|
|
|
static inline struct ntfs_inode *ntfs_i(struct inode *inode) |
|
{ |
|
return container_of(inode, struct ntfs_inode, vfs_inode); |
|
} |
|
|
|
static inline bool is_compressed(const struct ntfs_inode *ni) |
|
{ |
|
return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || |
|
(ni->ni_flags & NI_FLAG_COMPRESSED_MASK); |
|
} |
|
|
|
static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) |
|
{ |
|
return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); |
|
} |
|
|
|
/* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ |
|
static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) |
|
{ |
|
ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; |
|
} |
|
|
|
static inline bool is_dedup(const struct ntfs_inode *ni) |
|
{ |
|
return ni->ni_flags & NI_FLAG_DEDUPLICATED; |
|
} |
|
|
|
static inline bool is_encrypted(const struct ntfs_inode *ni) |
|
{ |
|
return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; |
|
} |
|
|
|
static inline bool is_sparsed(const struct ntfs_inode *ni) |
|
{ |
|
return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; |
|
} |
|
|
|
static inline int is_resident(struct ntfs_inode *ni) |
|
{ |
|
return ni->ni_flags & NI_FLAG_RESIDENT; |
|
} |
|
|
|
static inline void le16_sub_cpu(__le16 *var, u16 val) |
|
{ |
|
*var = cpu_to_le16(le16_to_cpu(*var) - val); |
|
} |
|
|
|
static inline void le32_sub_cpu(__le32 *var, u32 val) |
|
{ |
|
*var = cpu_to_le32(le32_to_cpu(*var) - val); |
|
} |
|
|
|
static inline void nb_put(struct ntfs_buffers *nb) |
|
{ |
|
u32 i, nbufs = nb->nbufs; |
|
|
|
if (!nbufs) |
|
return; |
|
|
|
for (i = 0; i < nbufs; i++) |
|
put_bh(nb->bh[i]); |
|
nb->nbufs = 0; |
|
} |
|
|
|
static inline void put_indx_node(struct indx_node *in) |
|
{ |
|
if (!in) |
|
return; |
|
|
|
kfree(in->index); |
|
nb_put(&in->nb); |
|
kfree(in); |
|
} |
|
|
|
static inline void mi_clear(struct mft_inode *mi) |
|
{ |
|
nb_put(&mi->nb); |
|
kfree(mi->mrec); |
|
mi->mrec = NULL; |
|
} |
|
|
|
static inline void ni_lock(struct ntfs_inode *ni) |
|
{ |
|
mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); |
|
} |
|
|
|
static inline void ni_lock_dir(struct ntfs_inode *ni) |
|
{ |
|
mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); |
|
} |
|
|
|
static inline void ni_unlock(struct ntfs_inode *ni) |
|
{ |
|
mutex_unlock(&ni->ni_lock); |
|
} |
|
|
|
static inline int ni_trylock(struct ntfs_inode *ni) |
|
{ |
|
return mutex_trylock(&ni->ni_lock); |
|
} |
|
|
|
static inline int attr_load_runs_attr(struct ntfs_inode *ni, |
|
struct ATTRIB *attr, |
|
struct runs_tree *run, CLST vcn) |
|
{ |
|
return attr_load_runs_vcn(ni, attr->type, attr_name(attr), |
|
attr->name_len, run, vcn); |
|
} |
|
|
|
static inline void le64_sub_cpu(__le64 *var, u64 val) |
|
{ |
|
*var = cpu_to_le64(le64_to_cpu(*var) - val); |
|
} |
|
|
|
#endif /* _LINUX_NTFS3_NTFS_FS_H */
|
|
|