Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / ntfs / attrib.h

diff --git a/kernel/fs/ntfs/attrib.h b/kernel/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.
+ *
+ * Copyright (c) 2001-2005 Anton Altaparmakov
+ * 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
+ * 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',
+ * 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;
+       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;
+} ntfs_attr_search_ctx;
+
+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 ntfs_attr_vcn_to_lcn_nolock(ntfs_inode *ni, const VCN vcn,
+               const bool write_locked);
+
+extern runlist_element *ntfs_attr_find_vcn_nolock(ntfs_inode *ni,
+               const VCN vcn, ntfs_attr_search_ctx *ctx);
+
+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);
+
+#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 */