* attrib.h - Defines for attribute handling in NTFS Linux kernel driver.
* Part of the Linux-NTFS project.
*
- * Copyright (c) 2001-2004 Anton Altaparmakov
+ * Copyright (c) 2001-2005 Anton Altaparmakov
* Copyright (c) 2002 Richard Russon
*
* This program/include file is free software; you can redistribute it and/or
#ifndef _LINUX_NTFS_ATTRIB_H
#define _LINUX_NTFS_ATTRIB_H
-#include <linux/fs.h>
-
#include "endian.h"
#include "types.h"
#include "layout.h"
-
-static inline void init_run_list(run_list *rl)
-{
- rl->rl = NULL;
- init_rwsem(&rl->lock);
-}
-
-typedef enum {
- LCN_HOLE = -1, /* Keep this as highest value or die! */
- LCN_RL_NOT_MAPPED = -2,
- LCN_ENOENT = -3,
- LCN_EINVAL = -4,
-} LCN_SPECIAL_VALUES;
+#include "inode.h"
+#include "runlist.h"
+#include "volume.h"
/**
- * attr_search_context - used in attribute search functions
+ * 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 lookup_attr() begins search with @attr, else after @attr
+ * @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
- * if calling the _first() functions), and set @is_first to TRUE (not necessary
+ * if calling the _first() functions), and set @is_first to 'true' (not necessary
* if calling the _first() functions).
*
- * If @is_first is TRUE, the search begins with @attr. If @is_first is FALSE,
+ * If @is_first is 'true', the search begins with @attr. If @is_first is 'false',
* 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
typedef struct {
MFT_RECORD *mrec;
ATTR_RECORD *attr;
- BOOL is_first;
+ bool is_first;
ntfs_inode *ntfs_ino;
ATTR_LIST_ENTRY *al_entry;
ntfs_inode *base_ntfs_ino;
MFT_RECORD *base_mrec;
ATTR_RECORD *base_attr;
-} attr_search_context;
-
-extern run_list_element *decompress_mapping_pairs(const ntfs_volume *vol,
- const ATTR_RECORD *attr, run_list_element *old_rl);
+} ntfs_attr_search_ctx;
-extern int map_run_list(ntfs_inode *ni, VCN vcn);
+extern int ntfs_map_runlist_nolock(ntfs_inode *ni, VCN vcn,
+ ntfs_attr_search_ctx *ctx);
+extern int ntfs_map_runlist(ntfs_inode *ni, VCN vcn);
-extern LCN vcn_to_lcn(const run_list_element *rl, const VCN vcn);
+extern LCN ntfs_attr_vcn_to_lcn_nolock(ntfs_inode *ni, const VCN vcn,
+ const bool write_locked);
-extern BOOL find_attr(const ATTR_TYPES type, const ntfschar *name,
- const u32 name_len, const IGNORE_CASE_BOOL ic, const u8 *val,
- const u32 val_len, attr_search_context *ctx);
+extern runlist_element *ntfs_attr_find_vcn_nolock(ntfs_inode *ni,
+ const VCN vcn, ntfs_attr_search_ctx *ctx);
-BOOL lookup_attr(const ATTR_TYPES type, const ntfschar *name,
+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,
- attr_search_context *ctx);
+ ntfs_attr_search_ctx *ctx);
-extern int load_attribute_list(ntfs_volume *vol, run_list *rl, u8 *al_start,
+extern int load_attribute_list(ntfs_volume *vol, runlist *rl, u8 *al_start,
const s64 size, const s64 initialized_size);
-static inline s64 attribute_value_length(const ATTR_RECORD *a)
+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 reinit_attr_search_ctx(attr_search_context *ctx);
-extern attr_search_context *get_attr_search_ctx(ntfs_inode *ni,
+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 put_attr_search_ctx(attr_search_context *ctx);
+extern void ntfs_attr_put_search_ctx(ntfs_attr_search_ctx *ctx);
+
+#ifdef NTFS_RW
+
+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);
+extern int ntfs_resident_attr_value_resize(MFT_RECORD *m, ATTR_RECORD *a,
+ const u32 new_size);
+
+extern int ntfs_attr_make_non_resident(ntfs_inode *ni, const u32 data_size);
+
+extern s64 ntfs_attr_extend_allocation(ntfs_inode *ni, s64 new_alloc_size,
+ const s64 new_data_size, const s64 data_start);
+
+extern int ntfs_attr_set(ntfs_inode *ni, const s64 ofs, const s64 cnt,
+ const u8 val);
+
+#endif /* NTFS_RW */
#endif /* _LINUX_NTFS_ATTRIB_H */
git://git.onelab.eu / linux-2.6.git / blobdiff