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fs/ntfs/attrib.h
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/* * attrib.h - Defines for attribute handling in NTFS Linux kernel driver. * Part of the Linux-NTFS project. * |
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* Copyright (c) 2001-2005 Anton Altaparmakov |
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* Copyright (c) 2002 Richard Russon * * This program/include file is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program/include file is distributed in the hope that it will be * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program (in the main directory of the Linux-NTFS * distribution in the file COPYING); if not, write to the Free Software * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef _LINUX_NTFS_ATTRIB_H #define _LINUX_NTFS_ATTRIB_H #include "endian.h" #include "types.h" #include "layout.h" #include "inode.h" #include "runlist.h" #include "volume.h" /** * ntfs_attr_search_ctx - used in attribute search functions * @mrec: buffer containing mft record to search * @attr: attribute record in @mrec where to begin/continue search * @is_first: if true ntfs_attr_lookup() begins search with @attr, else after * * Structure must be initialized to zero before the first call to one of the * attribute search functions. Initialize @mrec to point to the mft record to * search, and @attr to point to the first attribute within @mrec (not necessary |
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* if calling the _first() functions), and set @is_first to 'true' (not necessary |
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* if calling the _first() functions). * |
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* If @is_first is 'true', the search begins with @attr. If @is_first is 'false', |
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* the search begins after @attr. This is so that, after the first call to one * of the search attribute functions, we can call the function again, without * any modification of the search context, to automagically get the next * matching attribute. */ typedef struct { MFT_RECORD *mrec; ATTR_RECORD *attr; |
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bool is_first; |
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ntfs_inode *ntfs_ino; ATTR_LIST_ENTRY *al_entry; ntfs_inode *base_ntfs_ino; MFT_RECORD *base_mrec; ATTR_RECORD *base_attr; } ntfs_attr_search_ctx; |
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extern int ntfs_map_runlist_nolock(ntfs_inode *ni, VCN vcn, ntfs_attr_search_ctx *ctx); |
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extern int ntfs_map_runlist(ntfs_inode *ni, VCN vcn); |
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extern LCN ntfs_attr_vcn_to_lcn_nolock(ntfs_inode *ni, const VCN vcn, |
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const bool write_locked); |
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extern runlist_element *ntfs_attr_find_vcn_nolock(ntfs_inode *ni, |
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const VCN vcn, ntfs_attr_search_ctx *ctx); |
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int ntfs_attr_lookup(const ATTR_TYPE type, const ntfschar *name, const u32 name_len, const IGNORE_CASE_BOOL ic, const VCN lowest_vcn, const u8 *val, const u32 val_len, ntfs_attr_search_ctx *ctx); extern int load_attribute_list(ntfs_volume *vol, runlist *rl, u8 *al_start, const s64 size, const s64 initialized_size); static inline s64 ntfs_attr_size(const ATTR_RECORD *a) { if (!a->non_resident) return (s64)le32_to_cpu(a->data.resident.value_length); return sle64_to_cpu(a->data.non_resident.data_size); } extern void ntfs_attr_reinit_search_ctx(ntfs_attr_search_ctx *ctx); extern ntfs_attr_search_ctx *ntfs_attr_get_search_ctx(ntfs_inode *ni, MFT_RECORD *mrec); extern void ntfs_attr_put_search_ctx(ntfs_attr_search_ctx *ctx); |
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#ifdef NTFS_RW |
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extern int ntfs_attr_size_bounds_check(const ntfs_volume *vol, const ATTR_TYPE type, const s64 size); extern int ntfs_attr_can_be_non_resident(const ntfs_volume *vol, const ATTR_TYPE type); extern int ntfs_attr_can_be_resident(const ntfs_volume *vol, const ATTR_TYPE type); extern int ntfs_attr_record_resize(MFT_RECORD *m, ATTR_RECORD *a, u32 new_size); |
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extern int ntfs_resident_attr_value_resize(MFT_RECORD *m, ATTR_RECORD *a, const u32 new_size); |
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extern int ntfs_attr_make_non_resident(ntfs_inode *ni, const u32 data_size); |
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extern s64 ntfs_attr_extend_allocation(ntfs_inode *ni, s64 new_alloc_size, const s64 new_data_size, const s64 data_start); |
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extern int ntfs_attr_set(ntfs_inode *ni, const s64 ofs, const s64 cnt, const u8 val); |
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#endif /* NTFS_RW */ |
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#endif /* _LINUX_NTFS_ATTRIB_H */ |